From 20ea6adbf199097c4f5f591ffee088340630dae4 Mon Sep 17 00:00:00 2001
From: =?utf8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Mon, 16 May 2022 23:40:32 +0200
Subject: [PATCH] bcm27xx: add support for linux v5.15
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 target/linux/bcm27xx/Makefile                 |     1 +
 target/linux/bcm27xx/bcm2708/config-5.15      |   367 +
 target/linux/bcm27xx/bcm2709/config-5.15      |   464 +
 target/linux/bcm27xx/bcm2710/config-5.15      |   438 +
 target/linux/bcm27xx/bcm2711/config-5.15      |   451 +
 target/linux/bcm27xx/modules/hwmon.mk         |     2 +-
 target/linux/bcm27xx/modules/other.mk         |    18 +
 target/linux/bcm27xx/modules/sound.mk         |     1 +
 ...it-the-CEC-disable-enable-functions-.patch |   111 +
 ...e-sure-the-device-is-powered-with-CE.patch |    51 +
 ...n-if-we-access-the-controller-while-.patch |    49 +
 ...ove-the-DDC-probing-for-status-detec.patch |    47 +
 ...c4-hdmi-Raise-the-maximum-clock-rate.patch |    31 +
 ...-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch |    40 +
 ...-a-spinlock-to-protect-register-acce.patch |   907 +
 ...-a-mutex-to-prevent-concurrent-frame.patch |   444 +
 ...vent-access-to-crtc-state-outside-of.patch |   161 +
 ...mi-Check-the-device-state-in-prepare.patch |    77 +
 ...dmi-Introduce-an-output_enabled-flag.patch |    78 +
 ...4-hdmi-Introduce-a-scdc_enabled-flag.patch |   101 +
 ...vc4-Make-vc4_crtc_get_encoder-public.patch |    45 +
 ...-encoder-to-vc4_crtc_config_pv-proto.patch |    43 +
 ...ork-the-encoder-retrieval-code-again.patch |    96 +
 ...0-0016-drm-vc4-crtc-Add-some-logging.patch |    38 +
 ...rage-the-load-tracker-on-the-BCM2711.patch |   123 +
 ...ase-the-core-clock-based-on-HVS-load.patch |   242 +
 .../950-0019-drm-vc4-select-PM.patch          |    24 +
 ...-Create-a-HPD-IRQ-event-helper-for-a.patch |   201 +
 ...ually-check-for-the-connector-status.patch |    60 +
 ...rypi-Add-RPI_FIRMWARE_NOTIFY_DISPLAY.patch |    27 +
 ...onflicting-framebuffers-before-calli.patch |    39 +
 ...y-the-firmware-when-DRM-is-in-charge.patch |    69 +
 ...vert-702b94bff3c50542a6e4ab9a4f4cef0.patch |    99 +
 ...23-properly-handle-oscillator-stop-b.patch |    48 +
 ...ing-bcm2835-audio-Drop-DT-dependency.patch |    96 +
 ...v-Fix-CS-polarity-if-GPIO-descriptor.patch |    32 +
 ...lbox-avoid-timer-start-from-callback.patch |    58 +
 ...-Always-request-for-user-confirmatio.patch |    45 +
 ...-Always-request-for-user-confirmatio.patch |    43 +
 ...smsx95xx-fix-crimes-against-truesize.patch |    47 +
 ...ental-Enable-turbo_mode-and-packetsi.patch |    43 +
 ...ow-mac-address-to-be-set-in-smsc95xx.patch |    96 +
 ...oup-Disable-cgroup-memory-by-default.patch |    85 +
 ...e_resource-against-resources-without.patch |    28 +
 ...cm2836-Avoid-Invalid-trigger-warning.patch |    24 +
 ...0038-irqchip-bcm2835-Add-FIQ-support.patch |   127 +
 ...hip-irq-bcm2835-Add-2836-FIQ-support.patch |    99 +
 ...ompletely-disable-the-spidev-warning.patch |    24 +
 ...5-Load-driver-early-and-support-lega.patch |   101 +
 ...rtc-Add-SPI-alias-for-pcf2123-driver.patch |    20 +
 ...835-Support-setting-reboot-partition.patch |   102 +
 ...-off-rather-than-busy-spinning-when-.patch |    23 +
 ...-Make-RASPBERRYPI_POWER-depend-on-PM.patch |    19 +
 ...cks-early-during-the-boot-process-so.patch |    45 +
 ...void-initialising-if-already-enabled.patch |    25 +
 ...Mark-used-PLLs-and-dividers-CRITICAL.patch |    28 +
 ...lk-bcm2835-Add-claim-clocks-property.patch |   120 +
 ...35-Read-max-core-clock-from-firmware.patch |   115 +
 ...Demote-deferral-errors-to-INFO-level.patch |    35 +
 .../950-0052-Update-vfpmodule.c.patch         |   137 +
 ...0-0053-i2c-bcm2835-Add-debug-support.patch |   189 +
 ...bcm2836-Remove-regmap-and-syscon-use.patch |   112 +
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 ...0057-amba_pl011-Round-input-clock-up.patch |    86 +
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 ...y-amba-pl011-Add-un-throttle-support.patch |    61 +
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 ...0063-Main-bcm2708-bcm2709-linux-port.patch |   150 +
 .../950-0064-Add-dwc_otg-driver.patch         | 61618 ++++++++++++++++
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 .../950-0074-Add-SMI-driver.patch             |  1910 +
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 ...off-Allow-it-to-work-on-Raspberry-Pi.patch |    35 +
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 ...all-the-downstream-rpi-sound-card-dr.patch | 16849 +++++
 ...lay-add-backlight-driver-and-overlay.patch |   172 +
 ...bcm2835-virtgpio-Virtual-GPIO-driver.patch |   256 +
 ...087-OF-DT-Overlay-configfs-interface.patch |   427 +
 ...i_h5-Don-t-send-conf_req-when-ACTIVE.patch |    23 +
 ...und-Robin-dispatch-IRQs-between-CPUs.patch |    72 +
 ...ware-emulation-of-deprecated-instruc.patch |    28 +
 ...91-cache-export-clean-and-invalidate.patch |    53 +
 ...-AXI-performance-monitor-driver-2222.patch |   691 +
 ...m2835-Set-Serial-number-and-Revision.patch |    63 +
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 ...FIQs-to-avoid-__irq_startup-warnings.patch |    36 +
 ...so-set-bus-numbers-from-reg-property.patch |    35 +
 ...ear-option-to-pps-gpio-via-dtoverlay.patch |    22 +
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 ...fault-mouse-polling-interval-to-60Hz.patch |    32 +
 ...to-export-gpio-used-by-gpio-poweroff.patch |    57 +
 ...pberrypi-Notify-firmware-of-a-reboot.patch |    84 +
 ...bcm2835-Calc.-FIQ_START-at-boot-time.patch |    66 +
 ...fs-Use-of_overlay_fdt_apply-API-call.patch |   114 +
 ...Disable-TCP-Segmentation-Offload-TSO.patch |    56 +
 ...e-enabling-of-EEE-into-PHY-init-code.patch |    64 +
 ...SPI_DRV-should-select-DVB_CXD2880-wi.patch |    20 +
 ...rypi-Add-backward-compatible-get_thr.patch |    79 +
 ...is7xx-Don-t-spin-if-no-data-received.patch |    23 +
 ...step_wise-add-support-for-hysteresis.patch |    89 +
 ...step_wise-avoid-throttling-at-hyster.patch |    22 +
 ...950-0111-Update-issue-templates-2736.patch |    47 +
 ...xx-Support-auto-downshift-to-100Mb-s.patch |    91 +
 ...rypi-Report-the-fw-variant-during-pr.patch |   101 +
 ...e-link-events-to-minimize-poll-storm.patch |    45 +
 ...xx-EEE-support-is-now-a-PHY-property.patch |    26 +
 ...ma-Add-support-for-per-channel-flags.patch |    48 +
 ...8-Add-backup-switchover-mode-support.patch |    50 +
 ...use-default-alignment-for-rx-buffers.patch |    23 +
 ...-tc358743-Increase-FIFO-level-to-374.patch |    31 +
 ...ix-connected-active-CSI-2-lane-repor.patch |    74 +
 ...-Add-support-for-972Mbit-s-link-freq.patch |    79 +
 ...743-Check-I2C-succeeded-during-probe.patch |    98 +
 ...180-Default-to-the-first-valid-input.patch |    45 +
 ...v7180-Add-YPrPb-support-for-ADV7282M.patch |    24 +
 ...Add-helper-defines-for-printing-FOUR.patch |    28 +
 ...-Document-BCM283x-CSI2-CCP2-receiver.patch |   103 +
 ...-Add-entry-for-BCM2835-Unicam-driver.patch |    28 +
 ...eturn-an-appropriate-colorspace-from.patch |    98 +
 ...chiq-Avoid-use-of-bool-in-structures.patch |    24 +
 ...chiq-Add-support-for-event-callbacks.patch |   356 +
 ...vices-Support-sending-data-to-MMAL-p.patch |    42 +
 ...2-Allow-exporting-of-a-struct-dmabuf.patch |    83 +
 ...iq-Fix-client_component-for-64-bit-k.patch |    35 +
 ...-bcm2835-Use-zd-when-printing-size_t.patch |    24 +
 ...iq-Add-in-the-Bayer-encoding-formats.patch |    51 +
 ...iq-Update-mmal_parameters.h-with-rec.patch |    56 +
 ...iq-Free-the-event-context-for-contro.patch |    28 +
 ...-vchiq-Fix-memory-leak-in-error-path.patch |    76 +
 ...ake-GPIO-an-output-for-strong-pullup.patch |    27 +
 ...40-arm-bcm2835-Fix-FIQ-early-ioremap.patch |    73 +
 ...arm-bcm2835-DMA-can-only-address-1GB.patch |    25 +
 ...rng-iproc-rng200-Add-BCM2838-support.patch |   153 +
 ...genet-constrain-max-DMA-burst-length.patch |    20 +
 ...Better-coalescing-parameter-defaults.patch |    43 +
 ...-link-energy-detect-powerdown-for-ex.patch |    31 +
 ...2835-enable-shared-interrupt-support.patch |    35 +
 ...clk-bcm2835-Don-t-wait-for-pllh-lock.patch |    38 +
 ...-bcm-bcm2835-pm-Add-support-for-2711.patch |   102 +
 ...support-for-setting-leaf-clock-rates.patch |    53 +
 ...w-reparenting-leaf-clocks-while-they.patch |    71 +
 ...-for-updating-interrupt-endpoint-int.patch |   104 +
 ...hci_fixup_endpoint-for-interval-adju.patch |   135 +
 ...fixup_endpoint-after-mangling-interv.patch |    23 +
 ...cm2835-Add-bcm2838-compatible-string.patch |    20 +
 ...50-0155-drm-v3d-Add-support-for-2711.patch |    20 +
 ...-flush-if-the-device-is-currently-of.patch |    52 +
 ...7-drm-v3d-Hook-up-the-runtime-PM-ops.patch |    68 +
 ...35-Set-clock-stretch-timeout-to-35ms.patch |    47 +
 ...bcm2835-Avoid-null-pointer-exception.patch |    29 +
 ...-drm-v3d-HACK-gut-runtime-pm-for-now.patch |   109 +
 ...m-v3d-Clock-V3D-down-when-not-in-use.patch |   161 +
 ...-chardev-for-mmap-ing-the-RPiVid-con.patch |   441 +
 ...ce-quirks-for-Freeway-Airmouse-T3-an.patch |    63 +
 ...164-Add-HDMI1-facility-to-the-driver.patch |    85 +
 ...t-Workaround-2-for-Pi4-Ethernet-fail.patch |    51 +
 ...ore-event-ring-segment-table-entries.patch |    60 +
 ...167-configs-arm64-bcm2711-Enable-V3D.patch |    28 +
 ...arch-arm-Add-model-string-to-cpuinfo.patch |    36 +
 ...Add-Revision-Serial-Model-to-cpuinfo.patch |    58 +
 ...s-Add-binding-for-the-Sony-IMX219-se.patch |    77 +
 ...0-0171-v4l2-Add-a-Greyworld-AWB-mode.patch |  5064 ++
 ...cm2835-camera-Add-greyworld-AWB-mode.patch |    37 +
 ...73-drm-v3d-Delete-pm_runtime-support.patch |    62 +
 ...oard-clk-and-pinctrl-to-bcm2711-comp.patch |    26 +
 ...-device-names-check-for-enable-state.patch |   139 +
 ...binding-for-the-Infineon-IRS1125-sen.patch |    66 +
 ...driver-for-the-Infineon-IRS1125-dept.patch |  1231 +
 ...Suppress-all-but-the-first-MMU-error.patch |    39 +
 ...950-0179-drm-v3d-Plug-dma_fence-leak.patch |    28 +
 ...m-Register-vcsm-cma-as-a-platform-dr.patch |    40 +
 ...m-Register-bcm2835-codec-as-a-platfo.patch |    40 +
 ...ow-ethernet-LED-mode-to-be-set-via-d.patch |    55 +
 ...Handle-missing-clock-more-gracefully.patch |    27 +
 ...-clock-so-firmware-knows-we-are-usin.patch |    27 +
 ...Allow-cpufreq-driver-to-also-adjust-.patch |    25 +
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 ...m-Set-up-dma-ranges-on-child-devices.patch |    33 +
 ...e-the-old-dma-controller-for-OF-conf.patch |    51 +
 ...ckport-BCM2711-support-from-upstream.patch |    47 +
 ...lise-rpi-firmware-before-clk-bcm2835.patch |    47 +
 ...hiq_arm-Give-vchiq-children-DT-nodes.patch |    39 +
 ...trl-bcm2835-Remove-gpiochip-on-error.patch |    25 +
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 ...-bcm2708_fb-Use-common-compat-header.patch |    23 +
 ...f-overlay-Correct-symbol-path-fixups.patch |    37 +
 ...-Add-DT-docs-for-Brcmstb-PCIe-device.patch |    77 +
 ...t-Disable-skip_umac_reset-by-default.patch |    23 +
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 ...uapi-hevc-Add-scaling-matrix-control.patch |   154 +
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 ...s-media-Add-binding-for-the-Raspberr.patch |   106 +
 ...a-Add-Raspberry-Pi-V4L2-H265-decoder.patch |  4341 ++
 ...k-Add-a-binding-for-the-RPi-Firmware.patch |    63 +
 ...lay-vc4-hdmi-Add-BCM2711-HDMI-contro.patch |   174 +
 ...the-pitch-is-only-valid-for-linear-f.patch |    39 +
 ...ar-rpivid-Remove-legacy-name-support.patch |    53 +
 ...CS_HIGH-if-GPIO-descriptors-are-used.patch |    57 +
 ...ar-rpivid-Don-t-map-more-than-wanted.patch |    51 +
 ...icam-Driver-for-CCP2-CSI2-camera-int.patch |  2711 +
 ...core-Add-sensor-ancillary-data-V4L2-.patch |    85 +
 ...EDIA_BUS_FMT_SENSOR_DATA-media-bus-f.patch |    63 +
 ...icam-Add-support-for-mulitple-device.patch |  1084 +
 ...cm2835-unicam-Add-embedded-data-node.patch |  1170 +
 ...icam-Use-dummy-buffer-if-none-have-b.patch |   308 +
 ...icam-Disable-event-related-ioctls-on.patch |    31 +
 ...icam-Add-support-for-the-FRAME_SYNC-.patch |    55 +
 ...icam-Re-fetch-mbus-code-from-subdev-.patch |    49 +
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 ...a-i2c-Add-IMX477-CMOS-sensor-binding.patch |   130 +
 ...835-unicam-Always-service-interrupts.patch |    51 +
 ...6is7xx-Fix-for-hardware-flow-control.patch |    70 +
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 ...ble-HDMI-audio-when-vc4-is-used-3640.patch |    33 +
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 ...125-Using-i2c_transfer-for-ic2-reads.patch |    65 +
 ...s1125-Refactoring-and-debug-messages.patch |   123 +
 ...omic-access-to-imager-reconfiguratio.patch |   381 +
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 ...m2835-audio-Add-missing-MODULE_ALIAS.patch |    30 +
 ...move-the-downstream-version-of-bcm28.patch |  3175 +
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 ...-set-the-format-before-VIDIOC_SUBDEV.patch |    40 +
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 ...-Correct-range-for-V4L2_CID_GAIN-to-.patch |    26 +
 ...-Convert-HMAX-setting-into-V4L2_CID_.patch |   159 +
 ...x290-Add-support-for-V4L2_CID_VBLANK.patch |   141 +
 ...0-Add-exposure-control-to-the-driver.patch |    93 +
 ...i2c-imx290-Add-H-and-V-flip-controls.patch |    83 +
 ...s-media-i2c-Add-mono-version-to-IMX2.patch |    36 +
 ...-Add-support-for-the-mono-sensor-var.patch |   185 +
 ...-Switch-set_hmax-to-use-imx290_write.patch |    43 +
 ...50-bcm2835aux-defer-if-clock-is-zero.patch |    28 +
 ...l-format-for-MIPI-packed-12bit-luma-.patch |    95 +
 ...l-format-for-MIPI-packed-14bit-luma-.patch |   104 +
 ...icam-Add-support-for-12bit-mono-pack.patch |    25 +
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 924 files changed, 265734 insertions(+), 1 deletion(-)
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 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0853-clk-Switch-from-__clk_determine_rate-to-clk_core_rou.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0854-clk-Introduce-clk_core_has_parent.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0855-clk-Stop-forwarding-clk_rate_requests-to-the-parent.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0856-clk-Zero-the-clk_rate_request-structure.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0857-clk-Test-the-clock-pointer-in-clk_hw_get_name.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0858-clk-bcm-rpi-Add-variant-structure.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0859-clk-bcm-rpi-Set-a-default-minimum-rate.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0860-clk-bcm-rpi-Run-some-clocks-at-the-minimum-rate-allo.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0861-Revert-drm-vc4-kms-Move-clock-request-to-our-HVS-sta.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0862-Revert-drm-vc4-Increase-the-core-clock-based-on-HVS-.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0863-Revert-drm-vc4-hdmi-Convert-to-the-new-clock-request.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0864-Revert-rpivid-Switch-to-new-clock-api.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0865-clk-Add-clk_get_rate_range.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0866-clk-tests-Add-some-tests-for-clk_get_rate_range.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0867-clk-tests-Add-missing-test-case-for-ranges.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0868-drm-vc4-hdmi-Rework-hdmi_enable_4kp60-detection.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0869-drm-vc4-kms-Warn-if-clk_set_min_rate-fails.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0870-drm-vc4-Make-sure-we-don-t-end-up-with-a-core-clock-.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0871-drm-vc4-kms-Use-maximum-FIFO-load-for-the-HVS-clock-.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0872-rpivid-Use-clk_get_max_rate.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0873-clk-bcm2835-use-subsys_initcall-for-the-clock-driver.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0874-tpm_tis_spi_main-Force-probe-routine-to-run-synchron.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0875-overlays-Add-drm-parameter-to-pitft28-resistive.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0876-ARM-dts-Add-i2c0mux-node-to-Model-B-rev-1.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0877-overlays-Fix-pitft28-35-resistive-rotate-params.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0878-ARM-dts-bcm2835-Switch-HSM-clock-to-firmware.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0879-drm-vc4_kms-Protect-hvs-dereference-on-fkms.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0880-Revert-fbdev-Fix-unregistering-of-framebuffers-witho.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0881-Revert-fbdev-Hot-unplug-firmware-fb-devices-on-force.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0882-staging-vchiq_arm-Add-log_level-module-params.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0883-dt-bindings-vendor-prefixes-Add-Arducam.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0884-media-dt-bindings-media-i2c-Add-Arducam-Pivariety-Se.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0885-media-i2c-Add-driver-of-Arducam-Pivariety-series-cam.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0886-overlays-Add-arducam-pivariety-overlay.dts.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0887-thermal-broadcom-Use-dev_err_probe-to-suppress-defer.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0888-dt-bindings-hwmon-add-microchip-emc2305.yaml-dt-bind.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0889-dtbindings-Fixup-microchip-emc2305.yaml-bindings.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0890-hwmon-emc2305-add-support-for-EMC2301-2-3-5-RPM-base.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0891-hwmon-emc2305-fixups-for-driver-submitted-to-mailing.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0893-dtoverlays-Add-i2c-fan-overlay.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0894-SQUASH-overlays-arducam-pivariety-Strip-leading-zero.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0895-overlays-Remove-other-leading-zeroes-from-node-addre.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0896-clk-Add-locking-to-clk_get_rate_range.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0897-drm-vc4-plane-Prevent-async-update-if-we-don-t-have-.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0898-drm-vc4-Consolidate-Hardware-Revision-Check.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0899-drm-vc4-bo-Rename-vc4_dumb_create.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0900-drm-vc4-bo-Split-out-Dumb-buffers-fixup.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0901-drm-vc4-drv-Register-a-different-driver-on-BCM2711.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0902-drm-vc4-kms-Register-a-different-drm_mode_config_fun.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0903-drm-vc4-plane-Register-a-different-drm_plane_helper_.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0904-drm-vc4-drv-Skip-BO-Backend-Initialization-on-BCM271.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0905-drm-vc4-crtc-Use-an-union-to-store-the-page-flip-cal.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0906-drm-vc4-crtc-Move-the-BO-handling-out-of-common-page.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0907-drm-vc4-crtc-Move-the-BO-Handling-out-of-Common-Page.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0908-drm-vc4-crtc-Don-t-call-into-BO-Handling-on-Async-Pa.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0909-drm-vc4-Warn-if-some-v3d-code-is-run-on-BCM2711.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0910-dtoverlays-Fix-incorrect-property-name-for-display-r.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0911-drm-vc4_hdmi-Force-a-modeset-when-Broadcast-RGB-sett.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0912-drm-atomic-If-margins-are-updated-update-all-planes.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0913-overlays-Add-gpio-hog-overlay.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch
 create mode 100644 target/linux/bcm27xx/patches-5.15/960-hwrng-iproc-set-quality-to-1000.patch

diff --git a/target/linux/bcm27xx/Makefile b/target/linux/bcm27xx/Makefile
index a62d72ffc4..6680ce9dd1 100644
--- a/target/linux/bcm27xx/Makefile
+++ b/target/linux/bcm27xx/Makefile
@@ -12,6 +12,7 @@ FEATURES:=audio boot-part display ext4 fpu gpio rootfs-part rtc squashfs usb usb
 SUBTARGETS:=bcm2708 bcm2709 bcm2710 bcm2711
 
 KERNEL_PATCHVER=5.10
+KERNEL_TESTING_PATCHVER:=5.15
 
 define Target/Description
 	Build firmware image for Broadcom BCM27xx SoC devices.
diff --git a/target/linux/bcm27xx/bcm2708/config-5.15 b/target/linux/bcm27xx/bcm2708/config-5.15
new file mode 100644
index 0000000000..c0fe111f92
--- /dev/null
+++ b/target/linux/bcm27xx/bcm2708/config-5.15
@@ -0,0 +1,367 @@
+# CONFIG_AIO is not set
+CONFIG_ALIGNMENT_TRAP=y
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_BCM=y
+CONFIG_ARCH_BCM2835=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MULTIPLATFORM=y
+CONFIG_ARCH_MULTI_V6=y
+CONFIG_ARCH_MULTI_V6_V7=y
+CONFIG_ARCH_NR_GPIO=0
+CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARM=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_CPU_SUSPEND=y
+CONFIG_ARM_ERRATA_411920=y
+CONFIG_ARM_HAS_SG_CHAIN=y
+CONFIG_ARM_L1_CACHE_SHIFT=5
+# CONFIG_ARM_MHU_V2 is not set
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
+CONFIG_ARM_THUMB=y
+CONFIG_ARM_TIMER_SP804=y
+CONFIG_ARM_UNWIND=y
+CONFIG_AUTO_ZRELADDR=y
+CONFIG_BCM2708_VCMEM=y
+# CONFIG_BCM2711_THERMAL is not set
+CONFIG_BCM2835_DEVGPIOMEM=y
+CONFIG_BCM2835_FAST_MEMCPY=y
+CONFIG_BCM2835_MBOX=y
+CONFIG_BCM2835_POWER=y
+# CONFIG_BCM2835_SMI is not set
+CONFIG_BCM2835_THERMAL=y
+CONFIG_BCM2835_TIMER=y
+CONFIG_BCM2835_VCHIQ=y
+# CONFIG_BCM2835_VCHIQ_MMAL is not set
+CONFIG_BCM2835_WDT=y
+CONFIG_BCM_VCIO=y
+# CONFIG_BCM_VC_SM_CMA is not set
+CONFIG_BCM_VIDEOCORE=y
+CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_PM=y
+CONFIG_BRCMSTB_L2_IRQ=y
+CONFIG_BRCM_CHAR_DRIVERS=y
+# CONFIG_CACHE_L2X0 is not set
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLK_BCM2711_DVP=y
+CONFIG_CLK_BCM2835=y
+CONFIG_CLK_RASPBERRYPI=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=5
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+# CONFIG_CMA_SYSFS is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CONFIGFS_FS=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_CPUFREQ_DT_PLATDEV=y
+CONFIG_CPU_32v6=y
+CONFIG_CPU_32v6K=y
+CONFIG_CPU_ABRT_EV6=y
+CONFIG_CPU_CACHE_V6=y
+CONFIG_CPU_CACHE_VIPT=y
+CONFIG_CPU_COPY_V6=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+CONFIG_CPU_FREQ_GOV_ATTR_SET=y
+CONFIG_CPU_FREQ_GOV_COMMON=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_HAS_ASID=y
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_PABRT_V6=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_THUMB_CAPABLE=y
+CONFIG_CPU_TLB_V6=y
+CONFIG_CPU_V6K=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+CONFIG_DMABUF_HEAPS=y
+CONFIG_DMABUF_HEAPS_CMA=y
+CONFIG_DMABUF_HEAPS_SYSTEM=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2708=y
+CONFIG_DMA_BCM2835=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_OPS=y
+CONFIG_DMA_REMAP=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_EDAC_ATOMIC_SCRUB=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_F2FS_FS=y
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CMDLINE=y
+# CONFIG_FB_RPISENSE is not set
+CONFIG_FB_SIMPLE=y
+CONFIG_FIQ=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_SUPPORT=y
+# CONFIG_FPE_FASTFPE is not set
+# CONFIG_FPE_NWFPE is not set
+CONFIG_FRAMEBUFFER_CONSOLE=y
+# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FREEZER=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_CACHE=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+# CONFIG_GPIO_BCM_VIRT is not set
+CONFIG_GPIO_CDEV=y
+# CONFIG_GPIO_FSM is not set
+CONFIG_GPIO_RASPBERRYPI_EXP=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_BCM2835=y
+CONFIG_HZ_FIXED=0
+CONFIG_I2C=y
+# CONFIG_I2C_BCM2708 is not set
+CONFIG_I2C_BOARDINFO=y
+# CONFIG_I2C_BRCMSTB is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_INPUT=y
+CONFIG_INPUT_MOUSEDEV=y
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KERNEL_GZIP=y
+# CONFIG_KERNEL_XZ is not set
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_ACTPWR=y
+CONFIG_LEDS_TRIGGER_INPUT=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOGO=y
+CONFIG_LOGO_LINUX_CLUT224=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAILBOX=y
+# CONFIG_MAILBOX_TEST is not set
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MFD_CORE=y
+# CONFIG_MFD_RASPBERRYPI_POE_HAT is not set
+# CONFIG_MFD_RPISENSE_CORE is not set
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGHT_HAVE_CACHE_L2X0=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+CONFIG_MMC_BCM2835=y
+CONFIG_MMC_BCM2835_DMA=y
+CONFIG_MMC_BCM2835_MMC=y
+CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
+CONFIG_MMC_BCM2835_SDHOST=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MODULES_USE_ELF_REL=y
+# CONFIG_MTD is not set
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NLS=y
+CONFIG_NLS_ASCII=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NVMEM=y
+CONFIG_OABI_COMPAT=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_CONFIGFS=y
+CONFIG_OF_DYNAMIC=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_OVERLAY=y
+CONFIG_OF_RESOLVE=y
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_BCM2835=y
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
+CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_RASPBERRYPI_FIRMWARE=y
+CONFIG_RASPBERRYPI_POWER=y
+CONFIG_RATIONAL=y
+# CONFIG_RAVE_SP_CORE is not set
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_RESET_CONTROLLER=y
+# CONFIG_RESET_RASPBERRYPI is not set
+CONFIG_RESET_SIMPLE=y
+# CONFIG_RPIVID_MEM is not set
+# CONFIG_RPI_POE_POWER is not set
+CONFIG_SCSI=y
+CONFIG_SCSI_COMMON=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SERIAL_8250_BCM2835AUX=y
+# CONFIG_SERIAL_8250_DMA is not set
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_NR_UARTS=1
+CONFIG_SERIAL_8250_RUNTIME_UARTS=0
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+# CONFIG_SERIAL_DEV_CTRL_TTYPORT is not set
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SG_POOL=y
+CONFIG_SMSC_PHY=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SRCU=y
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWPHY=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+# CONFIG_TEXTSEARCH is not set
+CONFIG_THERMAL=y
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_OF=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TINY_SRCU=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_UEVENT_HELPER_PATH=""
+# CONFIG_UID16 is not set
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNWINDER_ARM=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_DWCOTG=y
+CONFIG_USB_NET_DRIVERS=y
+CONFIG_USB_NET_SMSC95XX=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_UAS=y
+CONFIG_USB_USBNET=y
+CONFIG_USE_OF=y
+CONFIG_VCHIQ_CDEV=y
+CONFIG_VFP=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_ZBOOT_ROM_TEXT=0x0
diff --git a/target/linux/bcm27xx/bcm2709/config-5.15 b/target/linux/bcm27xx/bcm2709/config-5.15
new file mode 100644
index 0000000000..b5cd201cfb
--- /dev/null
+++ b/target/linux/bcm27xx/bcm2709/config-5.15
@@ -0,0 +1,464 @@
+# CONFIG_AIO is not set
+CONFIG_ALIGNMENT_TRAP=y
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_BCM=y
+CONFIG_ARCH_BCM2835=y
+# CONFIG_ARCH_BCM_HR2 is not set
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MULTIPLATFORM=y
+CONFIG_ARCH_MULTI_V6_V7=y
+CONFIG_ARCH_MULTI_V7=y
+CONFIG_ARCH_NR_GPIO=0
+CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
+CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARM=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_CPU_SUSPEND=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_HAS_SG_CHAIN=y
+CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_L1_CACHE_SHIFT_6=y
+CONFIG_ARM_LPAE=y
+# CONFIG_ARM_MHU_V2 is not set
+CONFIG_ARM_PATCH_IDIV=y
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
+CONFIG_ARM_THUMB=y
+CONFIG_ARM_TIMER_SP804=y
+CONFIG_ARM_UNWIND=y
+CONFIG_ARM_VIRT_EXT=y
+CONFIG_ASSOCIATIVE_ARRAY=y
+CONFIG_AUTO_ZRELADDR=y
+CONFIG_BCM2708_VCMEM=y
+CONFIG_BCM2711_THERMAL=y
+CONFIG_BCM2835_DEVGPIOMEM=y
+CONFIG_BCM2835_MBOX=y
+CONFIG_BCM2835_POWER=y
+# CONFIG_BCM2835_SMI is not set
+CONFIG_BCM2835_THERMAL=y
+CONFIG_BCM2835_TIMER=y
+CONFIG_BCM2835_VCHIQ=y
+# CONFIG_BCM2835_VCHIQ_MMAL is not set
+CONFIG_BCM2835_WDT=y
+CONFIG_BCM7XXX_PHY=y
+CONFIG_BCMGENET=y
+CONFIG_BCM_NET_PHYLIB=y
+CONFIG_BCM_VCIO=y
+# CONFIG_BCM_VC_SM_CMA is not set
+CONFIG_BCM_VIDEOCORE=y
+CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_PM=y
+CONFIG_BOUNCE=y
+CONFIG_BRCMSTB_L2_IRQ=y
+CONFIG_BRCM_CHAR_DRIVERS=y
+CONFIG_BROADCOM_PHY=y
+# CONFIG_CACHE_L2X0 is not set
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLK_BCM2711_DVP=y
+CONFIG_CLK_BCM2835=y
+CONFIG_CLK_RASPBERRYPI=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=5
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+# CONFIG_CMA_SYSFS is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CONFIGFS_FS=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_CPUFREQ_DT_PLATDEV=y
+CONFIG_CPU_32v6K=y
+CONFIG_CPU_32v7=y
+CONFIG_CPU_ABRT_EV7=y
+CONFIG_CPU_CACHE_V7=y
+CONFIG_CPU_CACHE_VIPT=y
+CONFIG_CPU_COPY_V6=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+CONFIG_CPU_FREQ_GOV_ATTR_SET=y
+CONFIG_CPU_FREQ_GOV_COMMON=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_HAS_ASID=y
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_PABRT_V7=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CPU_SPECTRE=y
+CONFIG_CPU_THUMB_CAPABLE=y
+CONFIG_CPU_TLB_V7=y
+CONFIG_CPU_V7=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_CTS=y
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_XTS=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+CONFIG_DIMLIB=y
+CONFIG_DMABUF_HEAPS=y
+CONFIG_DMABUF_HEAPS_CMA=y
+CONFIG_DMABUF_HEAPS_SYSTEM=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2708=y
+CONFIG_DMA_BCM2835=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_OPS=y
+CONFIG_DMA_REMAP=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_EDAC_ATOMIC_SCRUB=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_EXTCON=y
+CONFIG_F2FS_FS=y
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CMDLINE=y
+# CONFIG_FB_RPISENSE is not set
+CONFIG_FB_SIMPLE=y
+CONFIG_FIQ=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_SUPPORT=y
+# CONFIG_FPE_FASTFPE is not set
+# CONFIG_FPE_NWFPE is not set
+CONFIG_FRAMEBUFFER_CONSOLE=y
+# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FREEZER=y
+CONFIG_FS_ENCRYPTION=y
+CONFIG_FS_ENCRYPTION_ALGS=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_CACHE=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ARCH_TOPOLOGY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_VDSO_32=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_BCM_VIRT=y
+CONFIG_GPIO_CDEV=y
+# CONFIG_GPIO_FSM is not set
+CONFIG_GPIO_RASPBERRYPI_EXP=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDEN_BRANCH_PREDICTOR=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HAVE_SMP=y
+CONFIG_HIGHMEM=y
+CONFIG_HIGHPTE=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_BCM2835=y
+CONFIG_HW_RANDOM_IPROC_RNG200=y
+CONFIG_HZ_FIXED=0
+CONFIG_I2C=y
+# CONFIG_I2C_BCM2708 is not set
+CONFIG_I2C_BOARDINFO=y
+# CONFIG_I2C_BRCMSTB is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_INPUT=y
+CONFIG_INPUT_MOUSEDEV=y
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KEYS=y
+CONFIG_KMAP_LOCAL=y
+CONFIG_KMAP_LOCAL_NON_LINEAR_PTE_ARRAY=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_ACTPWR=y
+CONFIG_LEDS_TRIGGER_INPUT=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LOGO=y
+CONFIG_LOGO_LINUX_CLUT224=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAILBOX=y
+# CONFIG_MAILBOX_TEST is not set
+CONFIG_MDIO_BCM_UNIMAC=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MFD_CORE=y
+# CONFIG_MFD_RASPBERRYPI_POE_HAT is not set
+# CONFIG_MFD_RPISENSE_CORE is not set
+CONFIG_MFD_SYSCON=y
+CONFIG_MICROCHIP_PHY=y
+CONFIG_MIGHT_HAVE_CACHE_L2X0=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+CONFIG_MMC_BCM2835=y
+CONFIG_MMC_BCM2835_DMA=y
+CONFIG_MMC_BCM2835_MMC=y
+CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
+CONFIG_MMC_BCM2835_SDHOST=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_IO_ACCESSORS=y
+CONFIG_MMC_SDHCI_IPROC=y
+# CONFIG_MMC_SDHCI_PCI is not set
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MODULES_USE_ELF_REL=y
+# CONFIG_MTD is not set
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEON=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NLS=y
+CONFIG_NLS_ASCII=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_NVMEM=y
+CONFIG_OABI_COMPAT=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_CONFIGFS=y
+CONFIG_OF_DYNAMIC=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_OVERLAY=y
+CONFIG_OF_RESOLVE=y
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_PADATA=y
+CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_BRCMSTB=y
+CONFIG_PCIE_PME=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYLIB=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_BCM2835=y
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
+CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_RAS=y
+CONFIG_RASPBERRYPI_FIRMWARE=y
+CONFIG_RASPBERRYPI_POWER=y
+CONFIG_RATIONAL=y
+# CONFIG_RAVE_SP_CORE is not set
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RESET_RASPBERRYPI=y
+CONFIG_RESET_SIMPLE=y
+CONFIG_RFS_ACCEL=y
+# CONFIG_RPIVID_MEM is not set
+# CONFIG_RPI_POE_POWER is not set
+CONFIG_RPS=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_SCSI=y
+CONFIG_SCSI_COMMON=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SERIAL_8250_BCM2835AUX=y
+# CONFIG_SERIAL_8250_DMA is not set
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_NR_UARTS=1
+CONFIG_SERIAL_8250_RUNTIME_UARTS=0
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+# CONFIG_SERIAL_DEV_CTRL_TTYPORT is not set
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SMP_ON_UP=y
+CONFIG_SMSC_PHY=y
+CONFIG_SOCK_RX_QUEUE_MAPPING=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SRCU=y
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+CONFIG_SWP_EMULATE=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+# CONFIG_TEXTSEARCH is not set
+CONFIG_THERMAL=y
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_OF=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UEVENT_HELPER_PATH=""
+# CONFIG_UID16 is not set
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNWINDER_ARM=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_DWCOTG=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_LAN78XX=y
+CONFIG_USB_NET_DRIVERS=y
+CONFIG_USB_NET_SMSC95XX=y
+CONFIG_USB_PCI=y
+CONFIG_USB_PHY=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_UAS=y
+# CONFIG_USB_UHCI_HCD is not set
+CONFIG_USB_USBNET=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PCI=y
+CONFIG_USB_XHCI_PLATFORM=y
+CONFIG_USE_OF=y
+CONFIG_VCHIQ_CDEV=y
+CONFIG_VFP=y
+CONFIG_VFPv3=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_XPS=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_ZBOOT_ROM_TEXT=0
diff --git a/target/linux/bcm27xx/bcm2710/config-5.15 b/target/linux/bcm27xx/bcm2710/config-5.15
new file mode 100644
index 0000000000..aad66d9562
--- /dev/null
+++ b/target/linux/bcm27xx/bcm2710/config-5.15
@@ -0,0 +1,438 @@
+CONFIG_64BIT=y
+# CONFIG_AIO is not set
+CONFIG_ARCH_BCM2835=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
+CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=24
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_WANTS_NO_INSTR=y
+CONFIG_ARM64=y
+CONFIG_ARM64_4K_PAGES=y
+CONFIG_ARM64_CNP=y
+CONFIG_ARM64_EPAN=y
+CONFIG_ARM64_ERRATUM_819472=y
+CONFIG_ARM64_ERRATUM_824069=y
+CONFIG_ARM64_ERRATUM_826319=y
+CONFIG_ARM64_ERRATUM_827319=y
+CONFIG_ARM64_ERRATUM_832075=y
+CONFIG_ARM64_ERRATUM_843419=y
+CONFIG_ARM64_HW_AFDBM=y
+CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843419=y
+CONFIG_ARM64_MODULE_PLTS=y
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_PAN=y
+CONFIG_ARM64_PA_BITS=48
+CONFIG_ARM64_PA_BITS_48=y
+CONFIG_ARM64_PTR_AUTH=y
+CONFIG_ARM64_PTR_AUTH_KERNEL=y
+CONFIG_ARM64_SVE=y
+CONFIG_ARM64_TAGGED_ADDR_ABI=y
+CONFIG_ARM64_VA_BITS=39
+CONFIG_ARM64_VA_BITS_39=y
+CONFIG_ARM64_WORKAROUND_CLEAN_CACHE=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_GIC_V2M=y
+CONFIG_ARM_GIC_V3=y
+CONFIG_ARM_GIC_V3_ITS=y
+CONFIG_ARM_GIC_V3_ITS_PCI=y
+# CONFIG_ARM_MHU_V2 is not set
+CONFIG_ARM_PSCI_FW=y
+CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
+CONFIG_ARM_TIMER_SP804=y
+CONFIG_ASSOCIATIVE_ARRAY=y
+CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
+CONFIG_BCM2708_VCMEM=y
+# CONFIG_BCM2711_THERMAL is not set
+CONFIG_BCM2835_DEVGPIOMEM=y
+CONFIG_BCM2835_MBOX=y
+CONFIG_BCM2835_POWER=y
+# CONFIG_BCM2835_SMI is not set
+CONFIG_BCM2835_THERMAL=y
+CONFIG_BCM2835_VCHIQ=y
+# CONFIG_BCM2835_VCHIQ_MMAL is not set
+CONFIG_BCM2835_WDT=y
+CONFIG_BCM_VCIO=y
+# CONFIG_BCM_VC_SM_CMA is not set
+CONFIG_BCM_VIDEOCORE=y
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_PM=y
+CONFIG_BRCMSTB_L2_IRQ=y
+CONFIG_BRCM_CHAR_DRIVERS=y
+CONFIG_CAVIUM_ERRATUM_22375=y
+CONFIG_CAVIUM_ERRATUM_23154=y
+CONFIG_CAVIUM_ERRATUM_27456=y
+CONFIG_CC_HAVE_STACKPROTECTOR_SYSREG=y
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLK_BCM2711_DVP=y
+CONFIG_CLK_BCM2835=y
+CONFIG_CLK_RASPBERRYPI=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=5
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+# CONFIG_CMA_SYSFS is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_XGENE=y
+# CONFIG_COMPAT_32BIT_TIME is not set
+CONFIG_CONFIGFS_FS=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_CPUFREQ_DT_PLATDEV=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+CONFIG_CPU_FREQ_GOV_ATTR_SET=y
+CONFIG_CPU_FREQ_GOV_COMMON=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_CTS=y
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_XTS=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DMABUF_HEAPS=y
+CONFIG_DMABUF_HEAPS_CMA=y
+CONFIG_DMABUF_HEAPS_SYSTEM=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2708=y
+CONFIG_DMA_BCM2835=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_DIRECT_REMAP=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_REMAP=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_EXTCON=y
+CONFIG_F2FS_FS=y
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CMDLINE=y
+# CONFIG_FB_RPISENSE is not set
+CONFIG_FB_SIMPLE=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_SUPPORT=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FRAME_POINTER=y
+CONFIG_FREEZER=y
+CONFIG_FSL_ERRATUM_A008585=y
+CONFIG_FS_ENCRYPTION=y
+CONFIG_FS_ENCRYPTION_ALGS=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_CACHE=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ARCH_TOPOLOGY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_FIND_FIRST_BIT=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_BCM_VIRT=y
+CONFIG_GPIO_CDEV=y
+# CONFIG_GPIO_FSM is not set
+CONFIG_GPIO_RASPBERRYPI_EXP=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_BCM2835=y
+CONFIG_I2C=y
+# CONFIG_I2C_BCM2708 is not set
+CONFIG_I2C_BOARDINFO=y
+# CONFIG_I2C_BRCMSTB is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+CONFIG_INPUT=y
+CONFIG_INPUT_MOUSEDEV=y
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KEYS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_ACTPWR=y
+CONFIG_LEDS_TRIGGER_INPUT=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LOGO=y
+CONFIG_LOGO_LINUX_CLUT224=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAILBOX=y
+# CONFIG_MAILBOX_TEST is not set
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MFD_CORE=y
+# CONFIG_MFD_RASPBERRYPI_POE_HAT is not set
+# CONFIG_MFD_RPISENSE_CORE is not set
+CONFIG_MFD_SYSCON=y
+CONFIG_MICROCHIP_PHY=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+CONFIG_MMC_BCM2835=y
+CONFIG_MMC_BCM2835_DMA=y
+CONFIG_MMC_BCM2835_MMC=y
+CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
+CONFIG_MMC_BCM2835_SDHOST=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_IO_ACCESSORS=y
+CONFIG_MMC_SDHCI_IPROC=y
+# CONFIG_MMC_SDHCI_PCI is not set
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MODULES_USE_ELF_RELA=y
+# CONFIG_MTD is not set
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NLS=y
+CONFIG_NLS_ASCII=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_NVMEM=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_CONFIGFS=y
+CONFIG_OF_DYNAMIC=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_OVERLAY=y
+CONFIG_OF_RESOLVE=y
+CONFIG_PADATA=y
+CONFIG_PARTITION_PERCPU=y
+CONFIG_PCI=y
+# CONFIG_PCIE_BRCMSTB is not set
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYLIB=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_BCM2835=y
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
+CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RASPBERRYPI_FIRMWARE=y
+CONFIG_RASPBERRYPI_POWER=y
+CONFIG_RATIONAL=y
+# CONFIG_RAVE_SP_CORE is not set
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_RESET_CONTROLLER=y
+# CONFIG_RESET_RASPBERRYPI is not set
+CONFIG_RESET_SIMPLE=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RODATA_FULL_DEFAULT_ENABLED=y
+# CONFIG_RPIVID_MEM is not set
+# CONFIG_RPI_POE_POWER is not set
+CONFIG_RPS=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_SCSI=y
+CONFIG_SCSI_COMMON=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SERIAL_8250_BCM2835AUX=y
+# CONFIG_SERIAL_8250_DMA is not set
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_NR_UARTS=1
+CONFIG_SERIAL_8250_RUNTIME_UARTS=0
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+# CONFIG_SERIAL_DEV_CTRL_TTYPORT is not set
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SMSC_PHY=y
+CONFIG_SOCK_RX_QUEUE_MAPPING=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SRCU=y
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+# CONFIG_TEXTSEARCH is not set
+CONFIG_THERMAL=y
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_OF=y
+CONFIG_THERMAL_WRITABLE_TRIPS=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UEVENT_HELPER_PATH=""
+CONFIG_UNMAP_KERNEL_AT_EL0=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_DWCOTG=y
+CONFIG_USB_LAN78XX=y
+CONFIG_USB_NET_DRIVERS=y
+CONFIG_USB_NET_SMSC95XX=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_UAS=y
+CONFIG_USB_USBNET=y
+CONFIG_VCHIQ_CDEV=y
+CONFIG_VMAP_STACK=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_XPS=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZONE_DMA32=y
diff --git a/target/linux/bcm27xx/bcm2711/config-5.15 b/target/linux/bcm27xx/bcm2711/config-5.15
new file mode 100644
index 0000000000..e3d4c2783a
--- /dev/null
+++ b/target/linux/bcm27xx/bcm2711/config-5.15
@@ -0,0 +1,451 @@
+CONFIG_64BIT=y
+# CONFIG_AIO is not set
+CONFIG_ARCH_BCM2835=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
+CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=24
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_WANTS_NO_INSTR=y
+CONFIG_ARM64=y
+CONFIG_ARM64_4K_PAGES=y
+CONFIG_ARM64_CNP=y
+CONFIG_ARM64_EPAN=y
+CONFIG_ARM64_ERRATUM_819472=y
+CONFIG_ARM64_ERRATUM_824069=y
+CONFIG_ARM64_ERRATUM_826319=y
+CONFIG_ARM64_ERRATUM_827319=y
+CONFIG_ARM64_ERRATUM_832075=y
+CONFIG_ARM64_ERRATUM_843419=y
+CONFIG_ARM64_HW_AFDBM=y
+CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843419=y
+CONFIG_ARM64_MODULE_PLTS=y
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_PAN=y
+CONFIG_ARM64_PA_BITS=48
+CONFIG_ARM64_PA_BITS_48=y
+CONFIG_ARM64_PTR_AUTH=y
+CONFIG_ARM64_PTR_AUTH_KERNEL=y
+CONFIG_ARM64_SVE=y
+CONFIG_ARM64_TAGGED_ADDR_ABI=y
+CONFIG_ARM64_VA_BITS=39
+CONFIG_ARM64_VA_BITS_39=y
+CONFIG_ARM64_WORKAROUND_CLEAN_CACHE=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_GIC_V2M=y
+CONFIG_ARM_GIC_V3=y
+CONFIG_ARM_GIC_V3_ITS=y
+CONFIG_ARM_GIC_V3_ITS_PCI=y
+# CONFIG_ARM_MHU_V2 is not set
+CONFIG_ARM_PSCI_FW=y
+CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
+CONFIG_ARM_TIMER_SP804=y
+CONFIG_ASSOCIATIVE_ARRAY=y
+CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
+CONFIG_BCM2708_VCMEM=y
+CONFIG_BCM2711_THERMAL=y
+CONFIG_BCM2835_DEVGPIOMEM=y
+CONFIG_BCM2835_MBOX=y
+CONFIG_BCM2835_POWER=y
+# CONFIG_BCM2835_SMI is not set
+# CONFIG_BCM2835_THERMAL is not set
+CONFIG_BCM2835_VCHIQ=y
+# CONFIG_BCM2835_VCHIQ_MMAL is not set
+CONFIG_BCM2835_WDT=y
+CONFIG_BCM7XXX_PHY=y
+CONFIG_BCMGENET=y
+CONFIG_BCM_NET_PHYLIB=y
+CONFIG_BCM_VCIO=y
+# CONFIG_BCM_VC_SM_CMA is not set
+CONFIG_BCM_VIDEOCORE=y
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_PM=y
+CONFIG_BRCMSTB_L2_IRQ=y
+CONFIG_BRCM_CHAR_DRIVERS=y
+CONFIG_BROADCOM_PHY=y
+CONFIG_CAVIUM_ERRATUM_22375=y
+CONFIG_CAVIUM_ERRATUM_23154=y
+CONFIG_CAVIUM_ERRATUM_27456=y
+CONFIG_CC_HAVE_STACKPROTECTOR_SYSREG=y
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLK_BCM2711_DVP=y
+CONFIG_CLK_BCM2835=y
+CONFIG_CLK_RASPBERRYPI=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=5
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+# CONFIG_CMA_SYSFS is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_XGENE=y
+# CONFIG_COMPAT_32BIT_TIME is not set
+CONFIG_CONFIGFS_FS=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_CPUFREQ_DT_PLATDEV=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
+CONFIG_CPU_FREQ_GOV_ATTR_SET=y
+CONFIG_CPU_FREQ_GOV_COMMON=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRC16=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_CTS=y
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_XTS=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DIMLIB=y
+CONFIG_DMABUF_HEAPS=y
+CONFIG_DMABUF_HEAPS_CMA=y
+CONFIG_DMABUF_HEAPS_SYSTEM=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_BCM2708=y
+CONFIG_DMA_BCM2835=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_DIRECT_REMAP=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_REMAP=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_EXTCON=y
+CONFIG_F2FS_FS=y
+CONFIG_FB=y
+CONFIG_FB_BCM2708=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CMDLINE=y
+# CONFIG_FB_RPISENSE is not set
+CONFIG_FB_SIMPLE=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_SUPPORT=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FRAME_POINTER=y
+CONFIG_FREEZER=y
+CONFIG_FSL_ERRATUM_A008585=y
+CONFIG_FS_ENCRYPTION=y
+CONFIG_FS_ENCRYPTION_ALGS=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_CACHE=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ARCH_TOPOLOGY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_FIND_FIRST_BIT=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_BCM_VIRT=y
+CONFIG_GPIO_CDEV=y
+# CONFIG_GPIO_FSM is not set
+CONFIG_GPIO_RASPBERRYPI_EXP=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HW_RANDOM=y
+# CONFIG_HW_RANDOM_BCM2835 is not set
+CONFIG_HW_RANDOM_IPROC_RNG200=y
+CONFIG_I2C=y
+# CONFIG_I2C_BCM2708 is not set
+CONFIG_I2C_BOARDINFO=y
+# CONFIG_I2C_BRCMSTB is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+CONFIG_INPUT=y
+CONFIG_INPUT_MOUSEDEV=y
+# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KEYS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_ACTPWR=y
+CONFIG_LEDS_TRIGGER_INPUT=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LOGO=y
+CONFIG_LOGO_LINUX_CLUT224=y
+# CONFIG_LOGO_LINUX_MONO is not set
+# CONFIG_LOGO_LINUX_VGA16 is not set
+CONFIG_MAC_PARTITION=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAILBOX=y
+# CONFIG_MAILBOX_TEST is not set
+CONFIG_MDIO_BCM_UNIMAC=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MFD_CORE=y
+# CONFIG_MFD_RASPBERRYPI_POE_HAT is not set
+# CONFIG_MFD_RPISENSE_CORE is not set
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+CONFIG_MMC_BCM2835=y
+CONFIG_MMC_BCM2835_DMA=y
+CONFIG_MMC_BCM2835_MMC=y
+CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
+CONFIG_MMC_BCM2835_SDHOST=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_BLOCK_MINORS=32
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_IO_ACCESSORS=y
+CONFIG_MMC_SDHCI_IPROC=y
+# CONFIG_MMC_SDHCI_PCI is not set
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MODULES_USE_ELF_RELA=y
+# CONFIG_MTD is not set
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NLS=y
+CONFIG_NLS_ASCII=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_NVMEM=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_CONFIGFS=y
+CONFIG_OF_DYNAMIC=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_OVERLAY=y
+CONFIG_OF_RESOLVE=y
+CONFIG_PADATA=y
+CONFIG_PARTITION_PERCPU=y
+CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_BRCMSTB=y
+CONFIG_PCIE_PME=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYLIB=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_BCM2835=y
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
+CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RAS=y
+CONFIG_RASPBERRYPI_FIRMWARE=y
+CONFIG_RASPBERRYPI_POWER=y
+CONFIG_RATIONAL=y
+# CONFIG_RAVE_SP_CORE is not set
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RESET_RASPBERRYPI=y
+CONFIG_RESET_SIMPLE=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RODATA_FULL_DEFAULT_ENABLED=y
+# CONFIG_RPIVID_MEM is not set
+# CONFIG_RPI_POE_POWER is not set
+CONFIG_RPS=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_SCSI=y
+CONFIG_SCSI_COMMON=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SERIAL_8250_BCM2835AUX=y
+# CONFIG_SERIAL_8250_DMA is not set
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_NR_UARTS=1
+CONFIG_SERIAL_8250_RUNTIME_UARTS=0
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+# CONFIG_SERIAL_DEV_CTRL_TTYPORT is not set
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SOCK_RX_QUEUE_MAPPING=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SRCU=y
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+# CONFIG_TEXTSEARCH is not set
+CONFIG_THERMAL=y
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_OF=y
+CONFIG_THERMAL_WRITABLE_TRIPS=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UEVENT_HELPER_PATH=""
+CONFIG_UNMAP_KERNEL_AT_EL0=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_DWCOTG=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_PCI=y
+CONFIG_USB_PHY=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_UAS=y
+# CONFIG_USB_UHCI_HCD is not set
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PCI=y
+CONFIG_USB_XHCI_PLATFORM=y
+CONFIG_VCHIQ_CDEV=y
+CONFIG_VMAP_STACK=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_XPS=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZONE_DMA32=y
diff --git a/target/linux/bcm27xx/modules/hwmon.mk b/target/linux/bcm27xx/modules/hwmon.mk
index 316f0b8419..02ac204e1a 100644
--- a/target/linux/bcm27xx/modules/hwmon.mk
+++ b/target/linux/bcm27xx/modules/hwmon.mk
@@ -20,7 +20,7 @@ $(eval $(call KernelPackage,hwmon-raspberrypi))
 define KernelPackage/hwmon-rpi-poe-fan
   SUBMENU:=$(HWMON_MENU)
   TITLE:=Raspberry Pi PoE HAT fan
-  DEPENDS:=@TARGET_bcm27xx +kmod-hwmon-core
+  DEPENDS:=@TARGET_bcm27xx @LINUX_5_10 +kmod-hwmon-core
   KCONFIG:=CONFIG_SENSORS_RPI_POE_FAN
   FILES:=$(LINUX_DIR)/drivers/hwmon/rpi-poe-fan.ko
   AUTOLOAD:=$(call AutoProbe,rpi-poe-fan)
diff --git a/target/linux/bcm27xx/modules/other.mk b/target/linux/bcm27xx/modules/other.mk
index 2d4aa3c079..5f37e498d0 100644
--- a/target/linux/bcm27xx/modules/other.mk
+++ b/target/linux/bcm27xx/modules/other.mk
@@ -20,6 +20,24 @@ endef
 $(eval $(call KernelPackage,pwm-bcm2835))
 
 
+define KernelPackage/pwm-raspberrypi-poe
+  SUBMENU:=$(OTHER_MENU)
+  TITLE:=Raspberry Pi Firwmware PoE Hat PWM support
+  KCONFIG:= \
+    CONFIG_PWM=y \
+    CONFIG_PWM_RASPBERRYPI_POE
+  FILES:=$(LINUX_DIR)/drivers/pwm/pwm-raspberrypi-poe.ko
+  AUTOLOAD:=$(call AutoLoad,20,pwm-raspberrypi-poe)
+  DEPENDS:=@TARGET_bcm27xx @LINUX_5_15
+endef
+
+define KernelPackage/pwm-raspberrypi-poe/description
+  This package provides Raspberry Pi Firwmware PoE Hat PWM support
+endef
+
+$(eval $(call KernelPackage,pwm-raspberrypi-poe))
+
+
 define KernelPackage/smi-bcm2835
   SUBMENU:=$(OTHER_MENU)
   TITLE:=BCM2835 SMI driver
diff --git a/target/linux/bcm27xx/modules/sound.mk b/target/linux/bcm27xx/modules/sound.mk
index 0823786d5c..f6372f6870 100644
--- a/target/linux/bcm27xx/modules/sound.mk
+++ b/target/linux/bcm27xx/modules/sound.mk
@@ -932,6 +932,7 @@ define KernelPackage/sound-soc-rpi-cirrus
     CONFIG_SND_SOC_WM8804 \
     CONFIG_SND_SOC_WM_ADSP
   FILES:= \
+    $(LINUX_DIR)/drivers/mfd/arizona.ko@ge5.15 \
     $(LINUX_DIR)/sound/soc/bcm/snd-soc-rpi-cirrus.ko \
     $(LINUX_DIR)/sound/soc/codecs/snd-soc-arizona.ko \
     $(LINUX_DIR)/sound/soc/codecs/snd-soc-wm-adsp.ko \
diff --git a/target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch b/target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch
new file mode 100644
index 0000000000..6f8ea4e9cc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0001-drm-vc4-hdmi-Split-the-CEC-disable-enable-functions-.patch
@@ -0,0 +1,111 @@
+From d145ff5ff4c35bf00a84c7f916165150d0a75e53 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Aug 2021 15:59:29 +0200
+Subject: [PATCH] drm/vc4: hdmi: Split the CEC disable / enable
+ functions in two
+
+In order to ease further additions to the CEC enable and disable, let's
+split the function into two functions, one to enable and the other to
+disable.
+
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20210819135931.895976-5-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 75 ++++++++++++++++++++--------------
+ 1 file changed, 45 insertions(+), 30 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1739,7 +1739,7 @@ static irqreturn_t vc4_cec_irq_handler(i
+ 	return ret;
+ }
+ 
+-static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable)
++static int vc4_hdmi_cec_enable(struct cec_adapter *adap)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
+ 	/* clock period in microseconds */
+@@ -1752,38 +1752,53 @@ static int vc4_hdmi_cec_adap_enable(stru
+ 	val |= ((4700 / usecs) << VC4_HDMI_CEC_CNT_TO_4700_US_SHIFT) |
+ 	       ((4500 / usecs) << VC4_HDMI_CEC_CNT_TO_4500_US_SHIFT);
+ 
+-	if (enable) {
+-		HDMI_WRITE(HDMI_CEC_CNTRL_5, val |
+-			   VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET);
+-		HDMI_WRITE(HDMI_CEC_CNTRL_5, val);
+-		HDMI_WRITE(HDMI_CEC_CNTRL_2,
+-			   ((1500 / usecs) << VC4_HDMI_CEC_CNT_TO_1500_US_SHIFT) |
+-			   ((1300 / usecs) << VC4_HDMI_CEC_CNT_TO_1300_US_SHIFT) |
+-			   ((800 / usecs) << VC4_HDMI_CEC_CNT_TO_800_US_SHIFT) |
+-			   ((600 / usecs) << VC4_HDMI_CEC_CNT_TO_600_US_SHIFT) |
+-			   ((400 / usecs) << VC4_HDMI_CEC_CNT_TO_400_US_SHIFT));
+-		HDMI_WRITE(HDMI_CEC_CNTRL_3,
+-			   ((2750 / usecs) << VC4_HDMI_CEC_CNT_TO_2750_US_SHIFT) |
+-			   ((2400 / usecs) << VC4_HDMI_CEC_CNT_TO_2400_US_SHIFT) |
+-			   ((2050 / usecs) << VC4_HDMI_CEC_CNT_TO_2050_US_SHIFT) |
+-			   ((1700 / usecs) << VC4_HDMI_CEC_CNT_TO_1700_US_SHIFT));
+-		HDMI_WRITE(HDMI_CEC_CNTRL_4,
+-			   ((4300 / usecs) << VC4_HDMI_CEC_CNT_TO_4300_US_SHIFT) |
+-			   ((3900 / usecs) << VC4_HDMI_CEC_CNT_TO_3900_US_SHIFT) |
+-			   ((3600 / usecs) << VC4_HDMI_CEC_CNT_TO_3600_US_SHIFT) |
+-			   ((3500 / usecs) << VC4_HDMI_CEC_CNT_TO_3500_US_SHIFT));
+-
+-		if (!vc4_hdmi->variant->external_irq_controller)
+-			HDMI_WRITE(HDMI_CEC_CPU_MASK_CLEAR, VC4_HDMI_CPU_CEC);
+-	} else {
+-		if (!vc4_hdmi->variant->external_irq_controller)
+-			HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, VC4_HDMI_CPU_CEC);
+-		HDMI_WRITE(HDMI_CEC_CNTRL_5, val |
+-			   VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET);
+-	}
++	HDMI_WRITE(HDMI_CEC_CNTRL_5, val |
++		   VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET);
++	HDMI_WRITE(HDMI_CEC_CNTRL_5, val);
++	HDMI_WRITE(HDMI_CEC_CNTRL_2,
++		   ((1500 / usecs) << VC4_HDMI_CEC_CNT_TO_1500_US_SHIFT) |
++		   ((1300 / usecs) << VC4_HDMI_CEC_CNT_TO_1300_US_SHIFT) |
++		   ((800 / usecs) << VC4_HDMI_CEC_CNT_TO_800_US_SHIFT) |
++		   ((600 / usecs) << VC4_HDMI_CEC_CNT_TO_600_US_SHIFT) |
++		   ((400 / usecs) << VC4_HDMI_CEC_CNT_TO_400_US_SHIFT));
++	HDMI_WRITE(HDMI_CEC_CNTRL_3,
++		   ((2750 / usecs) << VC4_HDMI_CEC_CNT_TO_2750_US_SHIFT) |
++		   ((2400 / usecs) << VC4_HDMI_CEC_CNT_TO_2400_US_SHIFT) |
++		   ((2050 / usecs) << VC4_HDMI_CEC_CNT_TO_2050_US_SHIFT) |
++		   ((1700 / usecs) << VC4_HDMI_CEC_CNT_TO_1700_US_SHIFT));
++	HDMI_WRITE(HDMI_CEC_CNTRL_4,
++		   ((4300 / usecs) << VC4_HDMI_CEC_CNT_TO_4300_US_SHIFT) |
++		   ((3900 / usecs) << VC4_HDMI_CEC_CNT_TO_3900_US_SHIFT) |
++		   ((3600 / usecs) << VC4_HDMI_CEC_CNT_TO_3600_US_SHIFT) |
++		   ((3500 / usecs) << VC4_HDMI_CEC_CNT_TO_3500_US_SHIFT));
++
++	if (!vc4_hdmi->variant->external_irq_controller)
++		HDMI_WRITE(HDMI_CEC_CPU_MASK_CLEAR, VC4_HDMI_CPU_CEC);
++
+ 	return 0;
+ }
+ 
++static int vc4_hdmi_cec_disable(struct cec_adapter *adap)
++{
++	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
++
++	if (!vc4_hdmi->variant->external_irq_controller)
++		HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, VC4_HDMI_CPU_CEC);
++
++	HDMI_WRITE(HDMI_CEC_CNTRL_5, HDMI_READ(HDMI_CEC_CNTRL_5) |
++		   VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET);
++
++	return 0;
++}
++
++static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable)
++{
++	if (enable)
++		return vc4_hdmi_cec_enable(adap);
++	else
++		return vc4_hdmi_cec_disable(adap);
++}
++
+ static int vc4_hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0002-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch b/target/linux/bcm27xx/patches-5.15/950-0002-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch
new file mode 100644
index 0000000000..a0ec38bada
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0002-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch
@@ -0,0 +1,51 @@
+From 0ba6ff7f5632f01143911e307be538ecc62e5094 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Aug 2021 15:59:30 +0200
+Subject: [PATCH] drm/vc4: hdmi: Make sure the device is powered with
+ CEC
+
+Similarly to what we encountered with the detect hook with DRM, nothing
+actually prevents any of the CEC callback from being run while the HDMI
+output is disabled.
+
+However, this is an issue since any register access to the controller
+when it's powered down will result in a silent hang.
+
+Let's make sure we run the runtime_pm hooks when the CEC adapter is
+opened and closed by the userspace to avoid that issue.
+
+Fixes: 15b4511a4af6 ("drm/vc4: add HDMI CEC support")
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20210819135931.895976-6-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1744,8 +1744,14 @@ static int vc4_hdmi_cec_enable(struct ce
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
+ 	/* clock period in microseconds */
+ 	const u32 usecs = 1000000 / CEC_CLOCK_FREQ;
+-	u32 val = HDMI_READ(HDMI_CEC_CNTRL_5);
++	u32 val;
++	int ret;
+ 
++	ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
++	if (ret)
++		return ret;
++
++	val = HDMI_READ(HDMI_CEC_CNTRL_5);
+ 	val &= ~(VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET |
+ 		 VC4_HDMI_CEC_CNT_TO_4700_US_MASK |
+ 		 VC4_HDMI_CEC_CNT_TO_4500_US_MASK);
+@@ -1788,6 +1794,8 @@ static int vc4_hdmi_cec_disable(struct c
+ 	HDMI_WRITE(HDMI_CEC_CNTRL_5, HDMI_READ(HDMI_CEC_CNTRL_5) |
+ 		   VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET);
+ 
++	pm_runtime_put(&vc4_hdmi->pdev->dev);
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0003-drm-vc4-hdmi-Warn-if-we-access-the-controller-while-.patch b/target/linux/bcm27xx/patches-5.15/950-0003-drm-vc4-hdmi-Warn-if-we-access-the-controller-while-.patch
new file mode 100644
index 0000000000..cc4b57ef07
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0003-drm-vc4-hdmi-Warn-if-we-access-the-controller-while-.patch
@@ -0,0 +1,49 @@
+From d0a44f399526a061e74b9a34b554f3d0e9cdddb3 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Aug 2021 15:59:31 +0200
+Subject: [PATCH] drm/vc4: hdmi: Warn if we access the controller while
+ disabled
+
+We've had many silent hangs where the kernel would look like it just
+stalled due to the access to one of the HDMI registers while the
+controller was disabled.
+
+Add a warning if we're about to do that so that it's at least not silent
+anymore.
+
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20210819135931.895976-7-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_hdmi_regs.h | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
+@@ -1,6 +1,8 @@
+ #ifndef _VC4_HDMI_REGS_H_
+ #define _VC4_HDMI_REGS_H_
+ 
++#include <linux/pm_runtime.h>
++
+ #include "vc4_hdmi.h"
+ 
+ #define VC4_HDMI_PACKET_STRIDE			0x24
+@@ -412,6 +414,8 @@ static inline u32 vc4_hdmi_read(struct v
+ 	const struct vc4_hdmi_variant *variant = hdmi->variant;
+ 	void __iomem *base;
+ 
++	WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
++
+ 	if (reg >= variant->num_registers) {
+ 		dev_warn(&hdmi->pdev->dev,
+ 			 "Invalid register ID %u\n", reg);
+@@ -438,6 +442,8 @@ static inline void vc4_hdmi_write(struct
+ 	const struct vc4_hdmi_variant *variant = hdmi->variant;
+ 	void __iomem *base;
+ 
++	WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
++
+ 	if (reg >= variant->num_registers) {
+ 		dev_warn(&hdmi->pdev->dev,
+ 			 "Invalid register ID %u\n", reg);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch b/target/linux/bcm27xx/patches-5.15/950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch
new file mode 100644
index 0000000000..f4dd7878d4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch
@@ -0,0 +1,47 @@
+From faa24f47c0066893e0b7772befe378bde4dc2ff9 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 25 Oct 2021 17:28:54 +0200
+Subject: [PATCH] drm/vc4: hdmi: Remove the DDC probing for status
+ detection
+
+Commit 9d44abbbb8d5 ("drm/vc4: Fall back to using an EDID probe in the
+absence of a GPIO.") added some code to read the EDID through DDC in the
+HDMI driver detect hook since the Pi3 had no HPD GPIO back then.
+However, commit b1b8f45b3130 ("ARM: dts: bcm2837: Add missing GPIOs of
+Expander") changed that a couple of years later.
+
+This causes an issue though since some TV (like the LG 55C8) when it
+comes out of standy will deassert the HPD line, but the EDID will
+remain readable.
+
+It causes an issues nn platforms without an HPD GPIO, like the Pi4,
+where the DDC probing will be our primary mean to detect a display, and
+thus we will never detect the HPD pulse. This was fine before since the
+pulse was small enough that we would never detect it, and we also didn't
+have anything (like the scrambler) that needed to be set up in the
+display.
+
+However, now that we have both, the display during the HPD pulse will
+clear its scrambler status, and since we won't detect the
+disconnect/reconnect cycle we will never enable the scrambler back.
+
+As our main reason for that DDC probing is gone, let's just remove it.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Link: https://lore.kernel.org/r/20211025152903.1088803-2-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -175,8 +175,6 @@ vc4_hdmi_connector_detect(struct drm_con
+ 	if (vc4_hdmi->hpd_gpio &&
+ 	    gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio)) {
+ 		connected = true;
+-	} else if (drm_probe_ddc(vc4_hdmi->ddc)) {
+-		connected = true;
+ 	} else if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) {
+ 		connected = true;
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0005-drm-vc4-hdmi-Raise-the-maximum-clock-rate.patch b/target/linux/bcm27xx/patches-5.15/950-0005-drm-vc4-hdmi-Raise-the-maximum-clock-rate.patch
new file mode 100644
index 0000000000..dbefadc5d5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0005-drm-vc4-hdmi-Raise-the-maximum-clock-rate.patch
@@ -0,0 +1,31 @@
+From f818ed9b9033ef7fbe45a7f5e2fc8c0d0cfe8c1d Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 25 Oct 2021 17:29:01 +0200
+Subject: [PATCH] drm/vc4: hdmi: Raise the maximum clock rate
+
+Now that we have the infrastructure in place, we can raise the maximum
+pixel rate we can reach for HDMI0 on the BCM2711.
+
+HDMI1 is left untouched since its pixelvalve has a smaller FIFO and
+would need a clock faster than what we can provide to support the same
+modes.
+
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://lore.kernel.org/r/20211025152903.1088803-9-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -2377,7 +2377,7 @@ static const struct vc4_hdmi_variant bcm
+ 	.encoder_type		= VC4_ENCODER_TYPE_HDMI0,
+ 	.debugfs_name		= "hdmi0_regs",
+ 	.card_name		= "vc4-hdmi-0",
+-	.max_pixel_clock	= HDMI_14_MAX_TMDS_CLK,
++	.max_pixel_clock	= 600000000,
+ 	.registers		= vc5_hdmi_hdmi0_fields,
+ 	.num_registers		= ARRAY_SIZE(vc5_hdmi_hdmi0_fields),
+ 	.phy_lane_mapping	= {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch b/target/linux/bcm27xx/patches-5.15/950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch
new file mode 100644
index 0000000000..bfc2ed4e8b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch
@@ -0,0 +1,40 @@
+From b460aee2dab3419842e24e7039a52d613b19a6e8 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 25 Oct 2021 17:28:55 +0200
+Subject: [PATCH] drm/vc4: hdmi: Fix HPD GPIO detection
+
+Prior to commit 6800234ceee0 ("drm/vc4: hdmi: Convert to gpiod"), in the
+detect hook, if we had an HPD GPIO we would only rely on it and return
+whatever state it was in.
+
+However, that commit changed that by mistake to only consider the case
+where we have a GPIO and it returns a logical high, and would fall back
+to the other methods otherwise.
+
+Since we can read the EDIDs when the HPD signal is low on some displays,
+we changed the detection status from disconnected to connected, and we
+would ignore an HPD pulse.
+
+Fixes: 6800234ceee0 ("drm/vc4: hdmi: Convert to gpiod")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Link: https://lore.kernel.org/r/20211025152903.1088803-3-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -172,9 +172,9 @@ vc4_hdmi_connector_detect(struct drm_con
+ 
+ 	WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev));
+ 
+-	if (vc4_hdmi->hpd_gpio &&
+-	    gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio)) {
+-		connected = true;
++	if (vc4_hdmi->hpd_gpio) {
++		if (gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio))
++			connected = true;
+ 	} else if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) {
+ 		connected = true;
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0007-drm-vc4-hdmi-Add-a-spinlock-to-protect-register-acce.patch b/target/linux/bcm27xx/patches-5.15/950-0007-drm-vc4-hdmi-Add-a-spinlock-to-protect-register-acce.patch
new file mode 100644
index 0000000000..64b97d8962
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0007-drm-vc4-hdmi-Add-a-spinlock-to-protect-register-acce.patch
@@ -0,0 +1,907 @@
+From d91a953904e1aeddf24a95af40fc1ae7ba2319fd Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 25 Oct 2021 16:11:08 +0200
+Subject: [PATCH] drm/vc4: hdmi: Add a spinlock to protect register
+ access
+
+The vc4 HDMI driver has multiple path shared between the CEC, ALSA and
+KMS frameworks, plus two interrupt handlers (CEC and hotplug) that will
+read and modify a number of registers.
+
+Even though not bug has been reported so far, it's definitely unsafe, so
+let's just add a spinlock to protect the register access of the HDMI
+controller.
+
+Link: https://lore.kernel.org/r/20211025141113.702757-5-maxime@cerno.tech
+Fixes: c8b75bca92cb ("drm/vc4: Add KMS support for Raspberry Pi.")
+Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c      | 202 ++++++++++++++++++++++++++--
+ drivers/gpu/drm/vc4/vc4_hdmi.h      |   5 +
+ drivers/gpu/drm/vc4/vc4_hdmi_phy.c  |  37 +++++
+ drivers/gpu/drm/vc4/vc4_hdmi_regs.h |   2 +
+ 4 files changed, 236 insertions(+), 10 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -118,6 +118,10 @@ static int vc4_hdmi_debugfs_regs(struct
+ 
+ static void vc4_hdmi_reset(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_M_CTL, VC4_HD_M_SW_RST);
+ 	udelay(1);
+ 	HDMI_WRITE(HDMI_M_CTL, 0);
+@@ -129,24 +133,36 @@ static void vc4_hdmi_reset(struct vc4_hd
+ 		   VC4_HDMI_SW_RESET_FORMAT_DETECT);
+ 
+ 	HDMI_WRITE(HDMI_SW_RESET_CONTROL, 0);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc5_hdmi_reset(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
+ 	reset_control_reset(vc4_hdmi->reset);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_DVP_CTL, 0);
+ 
+ 	HDMI_WRITE(HDMI_CLOCK_STOP,
+ 		   HDMI_READ(HDMI_CLOCK_STOP) | VC4_DVP_HT_CLOCK_STOP_PIXEL);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ #ifdef CONFIG_DRM_VC4_HDMI_CEC
+ static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long cec_rate = clk_get_rate(vc4_hdmi->cec_clock);
++	unsigned long flags;
+ 	u16 clk_cnt;
+ 	u32 value;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	value = HDMI_READ(HDMI_CEC_CNTRL_1);
+ 	value &= ~VC4_HDMI_CEC_DIV_CLK_CNT_MASK;
+ 
+@@ -154,9 +170,11 @@ static void vc4_hdmi_cec_update_clk_div(
+ 	 * Set the clock divider: the hsm_clock rate and this divider
+ 	 * setting will give a 40 kHz CEC clock.
+ 	 */
+-	clk_cnt = clk_get_rate(vc4_hdmi->cec_clock) / CEC_CLOCK_FREQ;
++	clk_cnt = cec_rate / CEC_CLOCK_FREQ;
+ 	value |= clk_cnt << VC4_HDMI_CEC_DIV_CLK_CNT_SHIFT;
+ 	HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ #else
+ static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi) {}
+@@ -175,8 +193,16 @@ vc4_hdmi_connector_detect(struct drm_con
+ 	if (vc4_hdmi->hpd_gpio) {
+ 		if (gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio))
+ 			connected = true;
+-	} else if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) {
+-		connected = true;
++	} else {
++		unsigned long flags;
++		u32 hotplug;
++
++		spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++		hotplug = HDMI_READ(HDMI_HOTPLUG);
++		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
++		if (hotplug & VC4_HDMI_HOTPLUG_CONNECTED)
++			connected = true;
+ 	}
+ 
+ 	if (connected) {
+@@ -370,9 +396,12 @@ static int vc4_hdmi_stop_packet(struct d
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	u32 packet_id = type - 0x80;
++	unsigned long flags;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_RAM_PACKET_CONFIG,
+ 		   HDMI_READ(HDMI_RAM_PACKET_CONFIG) & ~BIT(packet_id));
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	if (!poll)
+ 		return 0;
+@@ -392,6 +421,7 @@ static void vc4_hdmi_write_infoframe(str
+ 	void __iomem *base = __vc4_hdmi_get_field_base(vc4_hdmi,
+ 						       ram_packet_start->reg);
+ 	uint8_t buffer[VC4_HDMI_PACKET_STRIDE];
++	unsigned long flags;
+ 	ssize_t len, i;
+ 	int ret;
+ 
+@@ -409,6 +439,8 @@ static void vc4_hdmi_write_infoframe(str
+ 		return;
+ 	}
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	for (i = 0; i < len; i += 7) {
+ 		writel(buffer[i + 0] << 0 |
+ 		       buffer[i + 1] << 8 |
+@@ -426,6 +458,9 @@ static void vc4_hdmi_write_infoframe(str
+ 
+ 	HDMI_WRITE(HDMI_RAM_PACKET_CONFIG,
+ 		   HDMI_READ(HDMI_RAM_PACKET_CONFIG) | BIT(packet_id));
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	ret = wait_for((HDMI_READ(HDMI_RAM_PACKET_STATUS) &
+ 			BIT(packet_id)), 100);
+ 	if (ret)
+@@ -545,6 +580,7 @@ static void vc4_hdmi_enable_scrambling(s
+ {
+ 	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	unsigned long flags;
+ 
+ 	if (!vc4_hdmi_supports_scrambling(encoder, mode))
+ 		return;
+@@ -555,8 +591,10 @@ static void vc4_hdmi_enable_scrambling(s
+ 	drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, true);
+ 	drm_scdc_set_scrambling(vc4_hdmi->ddc, true);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_SCRAMBLER_CTL, HDMI_READ(HDMI_SCRAMBLER_CTL) |
+ 		   VC5_HDMI_SCRAMBLER_CTL_ENABLE);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work,
+ 			   msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS));
+@@ -566,6 +604,7 @@ static void vc4_hdmi_disable_scrambling(
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	struct drm_crtc *crtc = encoder->crtc;
++	unsigned long flags;
+ 
+ 	/*
+ 	 * At boot, encoder->crtc will be NULL. Since we don't know the
+@@ -581,8 +620,10 @@ static void vc4_hdmi_disable_scrambling(
+ 	if (delayed_work_pending(&vc4_hdmi->scrambling_work))
+ 		cancel_delayed_work_sync(&vc4_hdmi->scrambling_work);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_SCRAMBLER_CTL, HDMI_READ(HDMI_SCRAMBLER_CTL) &
+ 		   ~VC5_HDMI_SCRAMBLER_CTL_ENABLE);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	drm_scdc_set_scrambling(vc4_hdmi->ddc, false);
+ 	drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, false);
+@@ -608,15 +649,23 @@ static void vc4_hdmi_encoder_post_crtc_d
+ 					       struct drm_atomic_state *state)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0);
+ 
+ 	HDMI_WRITE(HDMI_VID_CTL, HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_CLRRGB);
+ 
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	mdelay(1);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_VID_CTL,
+ 		   HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_ENABLE);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	vc4_hdmi_disable_scrambling(encoder);
+ }
+ 
+@@ -624,10 +673,13 @@ static void vc4_hdmi_encoder_post_crtc_p
+ 						 struct drm_atomic_state *state)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	unsigned long flags;
+ 	int ret;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_VID_CTL,
+ 		   HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_BLANKPIX);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	if (vc4_hdmi->variant->phy_disable)
+ 		vc4_hdmi->variant->phy_disable(vc4_hdmi);
+@@ -646,8 +698,11 @@ static void vc4_hdmi_encoder_disable(str
+ 
+ static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, bool enable)
+ {
++	unsigned long flags;
+ 	u32 csc_ctl;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	csc_ctl = VC4_SET_FIELD(VC4_HD_CSC_CTL_ORDER_BGR,
+ 				VC4_HD_CSC_CTL_ORDER);
+ 
+@@ -677,14 +732,19 @@ static void vc4_hdmi_csc_setup(struct vc
+ 
+ 	/* The RGB order applies even when CSC is disabled. */
+ 	HDMI_WRITE(HDMI_CSC_CTL, csc_ctl);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, bool enable)
+ {
++	unsigned long flags;
+ 	u32 csc_ctl;
+ 
+ 	csc_ctl = 0x07;	/* RGB_CONVERT_MODE = custom matrix, || USE_RGB_TO_YCBCR */
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	if (enable) {
+ 		/* CEA VICs other than #1 requre limited range RGB
+ 		 * output unless overridden by an AVI infoframe.
+@@ -716,6 +776,8 @@ static void vc5_hdmi_csc_setup(struct vc
+ 	}
+ 
+ 	HDMI_WRITE(HDMI_CSC_CTL, csc_ctl);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc4_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
+@@ -739,6 +801,9 @@ static void vc4_hdmi_set_timings(struct
+ 					mode->crtc_vsync_end -
+ 					interlaced,
+ 					VC4_HDMI_VERTB_VBP));
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	HDMI_WRITE(HDMI_HORZA,
+ 		   (vsync_pos ? VC4_HDMI_HORZA_VPOS : 0) |
+@@ -762,6 +827,8 @@ static void vc4_hdmi_set_timings(struct
+ 
+ 	HDMI_WRITE(HDMI_VERTB0, vertb_even);
+ 	HDMI_WRITE(HDMI_VERTB1, vertb);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
+@@ -785,10 +852,13 @@ static void vc5_hdmi_set_timings(struct
+ 					mode->crtc_vsync_end -
+ 					interlaced,
+ 					VC4_HDMI_VERTB_VBP));
++	unsigned long flags;
+ 	unsigned char gcp;
+ 	bool gcp_en;
+ 	u32 reg;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021);
+ 	HDMI_WRITE(HDMI_HORZA,
+ 		   (vsync_pos ? VC5_HDMI_HORZA_VPOS : 0) |
+@@ -847,13 +917,18 @@ static void vc5_hdmi_set_timings(struct
+ 	HDMI_WRITE(HDMI_GCP_CONFIG, reg);
+ 
+ 	HDMI_WRITE(HDMI_CLOCK_STOP, 0);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc4_hdmi_recenter_fifo(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
+ 	u32 drift;
+ 	int ret;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	drift = HDMI_READ(HDMI_FIFO_CTL);
+ 	drift &= VC4_HDMI_FIFO_VALID_WRITE_MASK;
+ 
+@@ -861,12 +936,20 @@ static void vc4_hdmi_recenter_fifo(struc
+ 		   drift & ~VC4_HDMI_FIFO_CTL_RECENTER);
+ 	HDMI_WRITE(HDMI_FIFO_CTL,
+ 		   drift | VC4_HDMI_FIFO_CTL_RECENTER);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	usleep_range(1000, 1100);
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_FIFO_CTL,
+ 		   drift & ~VC4_HDMI_FIFO_CTL_RECENTER);
+ 	HDMI_WRITE(HDMI_FIFO_CTL,
+ 		   drift | VC4_HDMI_FIFO_CTL_RECENTER);
+ 
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	ret = wait_for(HDMI_READ(HDMI_FIFO_CTL) &
+ 		       VC4_HDMI_FIFO_CTL_RECENTER_DONE, 1);
+ 	WARN_ONCE(ret, "Timeout waiting for "
+@@ -900,6 +983,7 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	unsigned long pixel_rate = vc4_conn_state->pixel_rate;
+ 	unsigned long bvb_rate, hsm_rate;
++	unsigned long flags;
+ 	int ret;
+ 
+ 	/*
+@@ -968,11 +1052,15 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 	if (vc4_hdmi->variant->phy_init)
+ 		vc4_hdmi->variant->phy_init(vc4_hdmi, vc4_conn_state);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_SCHEDULER_CONTROL,
+ 		   HDMI_READ(HDMI_SCHEDULER_CONTROL) |
+ 		   VC4_HDMI_SCHEDULER_CONTROL_MANUAL_FORMAT |
+ 		   VC4_HDMI_SCHEDULER_CONTROL_IGNORE_VSYNC_PREDICTS);
+ 
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	if (vc4_hdmi->variant->set_timings)
+ 		vc4_hdmi->variant->set_timings(vc4_hdmi, conn_state, mode);
+ 
+@@ -992,6 +1080,7 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ 	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+ 	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	unsigned long flags;
+ 
+ 	if (vc4_encoder->hdmi_monitor &&
+ 	    drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED) {
+@@ -1006,7 +1095,9 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ 		vc4_encoder->limited_rgb_range = false;
+ 	}
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_FIFO_CTL, VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
+@@ -1017,8 +1108,11 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC;
+ 	bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC;
++	unsigned long flags;
+ 	int ret;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_VID_CTL,
+ 		   VC4_HD_VID_CTL_ENABLE |
+ 		   VC4_HD_VID_CTL_CLRRGB |
+@@ -1035,6 +1129,8 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 			   HDMI_READ(HDMI_SCHEDULER_CONTROL) |
+ 			   VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI);
+ 
++		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 		ret = wait_for(HDMI_READ(HDMI_SCHEDULER_CONTROL) &
+ 			       VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE, 1000);
+ 		WARN_ONCE(ret, "Timeout waiting for "
+@@ -1047,6 +1143,8 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 			   HDMI_READ(HDMI_SCHEDULER_CONTROL) &
+ 			   ~VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI);
+ 
++		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 		ret = wait_for(!(HDMI_READ(HDMI_SCHEDULER_CONTROL) &
+ 				 VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE), 1000);
+ 		WARN_ONCE(ret, "Timeout waiting for "
+@@ -1054,6 +1152,8 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 	}
+ 
+ 	if (vc4_encoder->hdmi_monitor) {
++		spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 		WARN_ON(!(HDMI_READ(HDMI_SCHEDULER_CONTROL) &
+ 			  VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE));
+ 		HDMI_WRITE(HDMI_SCHEDULER_CONTROL,
+@@ -1063,6 +1163,8 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 		HDMI_WRITE(HDMI_RAM_PACKET_CONFIG,
+ 			   VC4_HDMI_RAM_PACKET_ENABLE);
+ 
++		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 		vc4_hdmi_set_infoframes(encoder);
+ 	}
+ 
+@@ -1186,6 +1288,7 @@ static void vc4_hdmi_audio_set_mai_clock
+ 					 unsigned int samplerate)
+ {
+ 	u32 hsm_clock = clk_get_rate(vc4_hdmi->audio_clock);
++	unsigned long flags;
+ 	unsigned long n, m;
+ 
+ 	rational_best_approximation(hsm_clock, samplerate,
+@@ -1195,9 +1298,11 @@ static void vc4_hdmi_audio_set_mai_clock
+ 				     VC4_HD_MAI_SMP_M_SHIFT) + 1,
+ 				    &n, &m);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_MAI_SMP,
+ 		   VC4_SET_FIELD(n, VC4_HD_MAI_SMP_N) |
+ 		   VC4_SET_FIELD(m - 1, VC4_HD_MAI_SMP_M));
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi, unsigned int samplerate)
+@@ -1208,6 +1313,8 @@ static void vc4_hdmi_set_n_cts(struct vc
+ 	u32 n, cts;
+ 	u64 tmp;
+ 
++	lockdep_assert_held(&vc4_hdmi->hw_lock);
++
+ 	n = 128 * samplerate / 1000;
+ 	tmp = (u64)(mode->clock * 1000) * n;
+ 	do_div(tmp, 128 * samplerate);
+@@ -1237,6 +1344,7 @@ static int vc4_hdmi_audio_startup(struct
+ {
+ 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
+ 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
++	unsigned long flags;
+ 
+ 	/*
+ 	 * If the HDMI encoder hasn't probed, or the encoder is
+@@ -1248,12 +1356,14 @@ static int vc4_hdmi_audio_startup(struct
+ 
+ 	vc4_hdmi->audio.streaming = true;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_MAI_CTL,
+ 		   VC4_HD_MAI_CTL_RESET |
+ 		   VC4_HD_MAI_CTL_FLUSH |
+ 		   VC4_HD_MAI_CTL_DLATE |
+ 		   VC4_HD_MAI_CTL_ERRORE |
+ 		   VC4_HD_MAI_CTL_ERRORF);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	if (vc4_hdmi->variant->phy_rng_enable)
+ 		vc4_hdmi->variant->phy_rng_enable(vc4_hdmi);
+@@ -1265,6 +1375,7 @@ static void vc4_hdmi_audio_reset(struct
+ {
+ 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
+ 	struct device *dev = &vc4_hdmi->pdev->dev;
++	unsigned long flags;
+ 	int ret;
+ 
+ 	vc4_hdmi->audio.streaming = false;
+@@ -1272,20 +1383,29 @@ static void vc4_hdmi_audio_reset(struct
+ 	if (ret)
+ 		dev_err(dev, "Failed to stop audio infoframe: %d\n", ret);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_MAI_CTL, VC4_HD_MAI_CTL_RESET);
+ 	HDMI_WRITE(HDMI_MAI_CTL, VC4_HD_MAI_CTL_ERRORF);
+ 	HDMI_WRITE(HDMI_MAI_CTL, VC4_HD_MAI_CTL_FLUSH);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static void vc4_hdmi_audio_shutdown(struct device *dev, void *data)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	HDMI_WRITE(HDMI_MAI_CTL,
+ 		   VC4_HD_MAI_CTL_DLATE |
+ 		   VC4_HD_MAI_CTL_ERRORE |
+ 		   VC4_HD_MAI_CTL_ERRORF);
+ 
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	if (vc4_hdmi->variant->phy_rng_disable)
+ 		vc4_hdmi->variant->phy_rng_disable(vc4_hdmi);
+ 
+@@ -1340,6 +1460,7 @@ static int vc4_hdmi_audio_prepare(struct
+ 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
+ 	unsigned int sample_rate = params->sample_rate;
+ 	unsigned int channels = params->channels;
++	unsigned long flags;
+ 	u32 audio_packet_config, channel_mask;
+ 	u32 channel_map;
+ 	u32 mai_audio_format;
+@@ -1348,14 +1469,15 @@ static int vc4_hdmi_audio_prepare(struct
+ 	dev_dbg(dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
+ 		sample_rate, params->sample_width, channels);
+ 
++	vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate);
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_MAI_CTL,
+ 		   VC4_SET_FIELD(channels, VC4_HD_MAI_CTL_CHNUM) |
+ 		   VC4_HD_MAI_CTL_WHOLSMP |
+ 		   VC4_HD_MAI_CTL_CHALIGN |
+ 		   VC4_HD_MAI_CTL_ENABLE);
+ 
+-	vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate);
+-
+ 	mai_sample_rate = sample_rate_to_mai_fmt(sample_rate);
+ 	if (params->iec.status[0] & IEC958_AES0_NONAUDIO &&
+ 	    params->channels == 8)
+@@ -1393,8 +1515,11 @@ static int vc4_hdmi_audio_prepare(struct
+ 	channel_map = vc4_hdmi->variant->channel_map(vc4_hdmi, channel_mask);
+ 	HDMI_WRITE(HDMI_MAI_CHANNEL_MAP, channel_map);
+ 	HDMI_WRITE(HDMI_AUDIO_PACKET_CONFIG, audio_packet_config);
++
+ 	vc4_hdmi_set_n_cts(vc4_hdmi, sample_rate);
+ 
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	memcpy(&vc4_hdmi->audio.infoframe, &params->cea, sizeof(params->cea));
+ 	vc4_hdmi_set_audio_infoframe(encoder);
+ 
+@@ -1668,6 +1793,8 @@ static void vc4_cec_read_msg(struct vc4_
+ 	struct cec_msg *msg = &vc4_hdmi->cec_rx_msg;
+ 	unsigned int i;
+ 
++	lockdep_assert_held(&vc4_hdmi->hw_lock);
++
+ 	msg->len = 1 + ((cntrl1 & VC4_HDMI_CEC_REC_WRD_CNT_MASK) >>
+ 					VC4_HDMI_CEC_REC_WRD_CNT_SHIFT);
+ 
+@@ -1686,11 +1813,12 @@ static void vc4_cec_read_msg(struct vc4_
+ 	}
+ }
+ 
+-static irqreturn_t vc4_cec_irq_handler_tx_bare(int irq, void *priv)
++static irqreturn_t vc4_cec_irq_handler_tx_bare_locked(struct vc4_hdmi *vc4_hdmi)
+ {
+-	struct vc4_hdmi *vc4_hdmi = priv;
+ 	u32 cntrl1;
+ 
++	lockdep_assert_held(&vc4_hdmi->hw_lock);
++
+ 	cntrl1 = HDMI_READ(HDMI_CEC_CNTRL_1);
+ 	vc4_hdmi->cec_tx_ok = cntrl1 & VC4_HDMI_CEC_TX_STATUS_GOOD;
+ 	cntrl1 &= ~VC4_HDMI_CEC_START_XMIT_BEGIN;
+@@ -1699,11 +1827,24 @@ static irqreturn_t vc4_cec_irq_handler_t
+ 	return IRQ_WAKE_THREAD;
+ }
+ 
+-static irqreturn_t vc4_cec_irq_handler_rx_bare(int irq, void *priv)
++static irqreturn_t vc4_cec_irq_handler_tx_bare(int irq, void *priv)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = priv;
++	irqreturn_t ret;
++
++	spin_lock(&vc4_hdmi->hw_lock);
++	ret = vc4_cec_irq_handler_tx_bare_locked(vc4_hdmi);
++	spin_unlock(&vc4_hdmi->hw_lock);
++
++	return ret;
++}
++
++static irqreturn_t vc4_cec_irq_handler_rx_bare_locked(struct vc4_hdmi *vc4_hdmi)
++{
+ 	u32 cntrl1;
+ 
++	lockdep_assert_held(&vc4_hdmi->hw_lock);
++
+ 	vc4_hdmi->cec_rx_msg.len = 0;
+ 	cntrl1 = HDMI_READ(HDMI_CEC_CNTRL_1);
+ 	vc4_cec_read_msg(vc4_hdmi, cntrl1);
+@@ -1716,6 +1857,18 @@ static irqreturn_t vc4_cec_irq_handler_r
+ 	return IRQ_WAKE_THREAD;
+ }
+ 
++static irqreturn_t vc4_cec_irq_handler_rx_bare(int irq, void *priv)
++{
++	struct vc4_hdmi *vc4_hdmi = priv;
++	irqreturn_t ret;
++
++	spin_lock(&vc4_hdmi->hw_lock);
++	ret = vc4_cec_irq_handler_rx_bare_locked(vc4_hdmi);
++	spin_unlock(&vc4_hdmi->hw_lock);
++
++	return ret;
++}
++
+ static irqreturn_t vc4_cec_irq_handler(int irq, void *priv)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = priv;
+@@ -1726,14 +1879,17 @@ static irqreturn_t vc4_cec_irq_handler(i
+ 	if (!(stat & VC4_HDMI_CPU_CEC))
+ 		return IRQ_NONE;
+ 
++	spin_lock(&vc4_hdmi->hw_lock);
+ 	cntrl5 = HDMI_READ(HDMI_CEC_CNTRL_5);
+ 	vc4_hdmi->cec_irq_was_rx = cntrl5 & VC4_HDMI_CEC_RX_CEC_INT;
+ 	if (vc4_hdmi->cec_irq_was_rx)
+-		ret = vc4_cec_irq_handler_rx_bare(irq, priv);
++		ret = vc4_cec_irq_handler_rx_bare_locked(vc4_hdmi);
+ 	else
+-		ret = vc4_cec_irq_handler_tx_bare(irq, priv);
++		ret = vc4_cec_irq_handler_tx_bare_locked(vc4_hdmi);
+ 
+ 	HDMI_WRITE(HDMI_CEC_CPU_CLEAR, VC4_HDMI_CPU_CEC);
++	spin_unlock(&vc4_hdmi->hw_lock);
++
+ 	return ret;
+ }
+ 
+@@ -1742,6 +1898,7 @@ static int vc4_hdmi_cec_enable(struct ce
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
+ 	/* clock period in microseconds */
+ 	const u32 usecs = 1000000 / CEC_CLOCK_FREQ;
++	unsigned long flags;
+ 	u32 val;
+ 	int ret;
+ 
+@@ -1749,6 +1906,8 @@ static int vc4_hdmi_cec_enable(struct ce
+ 	if (ret)
+ 		return ret;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	val = HDMI_READ(HDMI_CEC_CNTRL_5);
+ 	val &= ~(VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET |
+ 		 VC4_HDMI_CEC_CNT_TO_4700_US_MASK |
+@@ -1779,12 +1938,17 @@ static int vc4_hdmi_cec_enable(struct ce
+ 	if (!vc4_hdmi->variant->external_irq_controller)
+ 		HDMI_WRITE(HDMI_CEC_CPU_MASK_CLEAR, VC4_HDMI_CPU_CEC);
+ 
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	return 0;
+ }
+ 
+ static int vc4_hdmi_cec_disable(struct cec_adapter *adap)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	if (!vc4_hdmi->variant->external_irq_controller)
+ 		HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, VC4_HDMI_CPU_CEC);
+@@ -1792,6 +1956,8 @@ static int vc4_hdmi_cec_disable(struct c
+ 	HDMI_WRITE(HDMI_CEC_CNTRL_5, HDMI_READ(HDMI_CEC_CNTRL_5) |
+ 		   VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET);
+ 
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	pm_runtime_put(&vc4_hdmi->pdev->dev);
+ 
+ 	return 0;
+@@ -1808,10 +1974,14 @@ static int vc4_hdmi_cec_adap_enable(stru
+ static int vc4_hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
++	unsigned long flags;
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_CEC_CNTRL_1,
+ 		   (HDMI_READ(HDMI_CEC_CNTRL_1) & ~VC4_HDMI_CEC_ADDR_MASK) |
+ 		   (log_addr & 0xf) << VC4_HDMI_CEC_ADDR_SHIFT);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	return 0;
+ }
+ 
+@@ -1820,6 +1990,7 @@ static int vc4_hdmi_cec_adap_transmit(st
+ {
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
+ 	struct drm_device *dev = vc4_hdmi->connector.dev;
++	unsigned long flags;
+ 	u32 val;
+ 	unsigned int i;
+ 
+@@ -1828,6 +1999,8 @@ static int vc4_hdmi_cec_adap_transmit(st
+ 		return -ENOMEM;
+ 	}
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	for (i = 0; i < msg->len; i += 4)
+ 		HDMI_WRITE(HDMI_CEC_TX_DATA_1 + (i >> 2),
+ 			   (msg->msg[i]) |
+@@ -1843,6 +2016,9 @@ static int vc4_hdmi_cec_adap_transmit(st
+ 	val |= VC4_HDMI_CEC_START_XMIT_BEGIN;
+ 
+ 	HDMI_WRITE(HDMI_CEC_CNTRL_1, val);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
+ 	return 0;
+ }
+ 
+@@ -1857,6 +2033,7 @@ static int vc4_hdmi_cec_init(struct vc4_
+ 	struct cec_connector_info conn_info;
+ 	struct platform_device *pdev = vc4_hdmi->pdev;
+ 	struct device *dev = &pdev->dev;
++	unsigned long flags;
+ 	u32 value;
+ 	int ret;
+ 
+@@ -1876,10 +2053,12 @@ static int vc4_hdmi_cec_init(struct vc4_
+ 	cec_fill_conn_info_from_drm(&conn_info, &vc4_hdmi->connector);
+ 	cec_s_conn_info(vc4_hdmi->cec_adap, &conn_info);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	value = HDMI_READ(HDMI_CEC_CNTRL_1);
+ 	/* Set the logical address to Unregistered */
+ 	value |= VC4_HDMI_CEC_ADDR_MASK;
+ 	HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	vc4_hdmi_cec_update_clk_div(vc4_hdmi);
+ 
+@@ -1898,7 +2077,9 @@ static int vc4_hdmi_cec_init(struct vc4_
+ 		if (ret)
+ 			goto err_remove_cec_rx_handler;
+ 	} else {
++		spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 		HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, 0xffffffff);
++		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 		ret = request_threaded_irq(platform_get_irq(pdev, 0),
+ 					   vc4_cec_irq_handler,
+@@ -2168,6 +2349,7 @@ static int vc4_hdmi_bind(struct device *
+ 	vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
+ 	if (!vc4_hdmi)
+ 		return -ENOMEM;
++	spin_lock_init(&vc4_hdmi->hw_lock);
+ 	INIT_DELAYED_WORK(&vc4_hdmi->scrambling_work, vc4_hdmi_scrambling_wq);
+ 
+ 	dev_set_drvdata(dev, vc4_hdmi);
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -179,6 +179,11 @@ struct vc4_hdmi {
+ 
+ 	struct debugfs_regset32 hdmi_regset;
+ 	struct debugfs_regset32 hd_regset;
++
++	/**
++	 * @hw_lock: Spinlock protecting device register access.
++	 */
++	spinlock_t hw_lock;
+ };
+ 
+ static inline struct vc4_hdmi *
+--- a/drivers/gpu/drm/vc4/vc4_hdmi_phy.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi_phy.c
+@@ -130,31 +130,49 @@
+ void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
+ 		       struct vc4_hdmi_connector_state *conn_state)
+ {
++	unsigned long flags;
++
+ 	/* PHY should be in reset, like
+ 	 * vc4_hdmi_encoder_disable() does.
+ 	 */
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16);
+ 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_TX_PHY_CTL_0,
+ 		   HDMI_READ(HDMI_TX_PHY_CTL_0) &
+ 		   ~VC4_HDMI_TX_PHY_RNG_PWRDN);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_TX_PHY_CTL_0,
+ 		   HDMI_READ(HDMI_TX_PHY_CTL_0) |
+ 		   VC4_HDMI_TX_PHY_RNG_PWRDN);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ static unsigned long long
+@@ -336,6 +354,8 @@ phy_get_channel_settings(enum vc4_hdmi_p
+ 
+ static void vc5_hdmi_reset_phy(struct vc4_hdmi *vc4_hdmi)
+ {
++	lockdep_assert_held(&vc4_hdmi->hw_lock);
++
+ 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0x0f);
+ 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL, BIT(10));
+ }
+@@ -348,10 +368,13 @@ void vc5_hdmi_phy_init(struct vc4_hdmi *
+ 	unsigned long long pixel_freq = conn_state->pixel_rate;
+ 	unsigned long long vco_freq;
+ 	unsigned char word_sel;
++	unsigned long flags;
+ 	u8 vco_sel, vco_div;
+ 
+ 	vco_freq = phy_get_vco_freq(pixel_freq, &vco_sel, &vco_div);
+ 
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++
+ 	vc5_hdmi_reset_phy(vc4_hdmi);
+ 
+ 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL,
+@@ -501,23 +524,37 @@ void vc5_hdmi_phy_init(struct vc4_hdmi *
+ 		   HDMI_READ(HDMI_TX_PHY_RESET_CTL) |
+ 		   VC4_HDMI_TX_PHY_RESET_CTL_PLL_RESETB |
+ 		   VC4_HDMI_TX_PHY_RESET_CTL_PLLDIV_RESETB);
++
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	vc5_hdmi_reset_phy(vc4_hdmi);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL,
+ 		   HDMI_READ(HDMI_TX_PHY_POWERDOWN_CTL) &
+ 		   ~VC4_HDMI_TX_PHY_POWERDOWN_CTL_RNDGEN_PWRDN);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+ void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi)
+ {
++	unsigned long flags;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL,
+ 		   HDMI_READ(HDMI_TX_PHY_POWERDOWN_CTL) |
+ 		   VC4_HDMI_TX_PHY_POWERDOWN_CTL_RNDGEN_PWRDN);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
+@@ -442,6 +442,8 @@ static inline void vc4_hdmi_write(struct
+ 	const struct vc4_hdmi_variant *variant = hdmi->variant;
+ 	void __iomem *base;
+ 
++	lockdep_assert_held(&hdmi->hw_lock);
++
+ 	WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
+ 
+ 	if (reg >= variant->num_registers) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0008-drm-vc4-hdmi-Use-a-mutex-to-prevent-concurrent-frame.patch b/target/linux/bcm27xx/patches-5.15/950-0008-drm-vc4-hdmi-Use-a-mutex-to-prevent-concurrent-frame.patch
new file mode 100644
index 0000000000..2298c0d812
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0008-drm-vc4-hdmi-Use-a-mutex-to-prevent-concurrent-frame.patch
@@ -0,0 +1,444 @@
+From 5976ef1d81c8d474eddb55103f29a686f84f22f1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 25 Oct 2021 16:11:09 +0200
+Subject: [PATCH] drm/vc4: hdmi: Use a mutex to prevent concurrent
+ framework access
+
+The vc4 HDMI controller registers into the KMS, CEC and ALSA
+frameworks.
+
+However, no particular care is done to prevent the concurrent execution
+of different framework hooks from happening at the same time.
+
+In order to protect against that scenario, let's introduce a mutex that
+relevant ALSA and KMS hooks will need to take to prevent concurrent
+execution.
+
+CEC is left out at the moment though, since the .get_modes and .detect
+KMS hooks, when running cec_s_phys_addr_from_edid, can end up calling
+CEC's .adap_enable hook. This introduces some reentrancy that isn't easy
+to deal with properly.
+
+The CEC hooks also don't share much state with the rest of the driver:
+the registers are entirely separate, we don't share any variable, the
+only thing that can conflict is the CEC clock divider setup that can be
+affected by a mode set.
+
+However, after discussing it, it looks like CEC should be able to
+recover from this if it was to happen.
+
+Link: https://lore.kernel.org/r/20211025141113.702757-6-maxime@cerno.tech
+Fixes: bb7d78568814 ("drm/vc4: Add HDMI audio support")
+Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 118 +++++++++++++++++++++++++++++++--
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  14 ++++
+ 2 files changed, 126 insertions(+), 6 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -188,6 +188,8 @@ vc4_hdmi_connector_detect(struct drm_con
+ 	struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
+ 	bool connected = false;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev));
+ 
+ 	if (vc4_hdmi->hpd_gpio) {
+@@ -218,11 +220,13 @@ vc4_hdmi_connector_detect(struct drm_con
+ 
+ 		vc4_hdmi_enable_scrambling(&vc4_hdmi->encoder.base.base);
+ 		pm_runtime_put(&vc4_hdmi->pdev->dev);
++		mutex_unlock(&vc4_hdmi->mutex);
+ 		return connector_status_connected;
+ 	}
+ 
+ 	cec_phys_addr_invalidate(vc4_hdmi->cec_adap);
+ 	pm_runtime_put(&vc4_hdmi->pdev->dev);
++	mutex_unlock(&vc4_hdmi->mutex);
+ 	return connector_status_disconnected;
+ }
+ 
+@@ -239,10 +243,14 @@ static int vc4_hdmi_connector_get_modes(
+ 	int ret = 0;
+ 	struct edid *edid;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	edid = drm_get_edid(connector, vc4_hdmi->ddc);
+ 	cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid);
+-	if (!edid)
+-		return -ENODEV;
++	if (!edid) {
++		ret = -ENODEV;
++		goto out;
++	}
+ 
+ 	vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
+ 
+@@ -262,6 +270,9 @@ static int vc4_hdmi_connector_get_modes(
+ 		}
+ 	}
+ 
++out:
++	mutex_unlock(&vc4_hdmi->mutex);
++
+ 	return ret;
+ }
+ 
+@@ -478,6 +489,8 @@ static void vc4_hdmi_set_avi_infoframe(s
+ 	union hdmi_infoframe frame;
+ 	int ret;
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
+ 	ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
+ 						       connector, mode);
+ 	if (ret < 0) {
+@@ -529,6 +542,8 @@ static void vc4_hdmi_set_hdr_infoframe(s
+ 	struct drm_connector_state *conn_state = connector->state;
+ 	union hdmi_infoframe frame;
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
+ 	if (!vc4_hdmi->variant->supports_hdr)
+ 		return;
+ 
+@@ -545,6 +560,8 @@ static void vc4_hdmi_set_infoframes(stru
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
+ 	vc4_hdmi_set_avi_infoframe(encoder);
+ 	vc4_hdmi_set_spd_infoframe(encoder);
+ 	/*
+@@ -564,6 +581,8 @@ static bool vc4_hdmi_supports_scrambling
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	struct drm_display_info *display = &vc4_hdmi->connector.display_info;
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
+ 	if (!vc4_encoder->hdmi_monitor)
+ 		return false;
+ 
+@@ -582,6 +601,8 @@ static void vc4_hdmi_enable_scrambling(s
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	unsigned long flags;
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
+ 	if (!vc4_hdmi_supports_scrambling(encoder, mode))
+ 		return;
+ 
+@@ -651,6 +672,8 @@ static void vc4_hdmi_encoder_post_crtc_d
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	unsigned long flags;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0);
+@@ -667,6 +690,8 @@ static void vc4_hdmi_encoder_post_crtc_d
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	vc4_hdmi_disable_scrambling(encoder);
++
++	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+ static void vc4_hdmi_encoder_post_crtc_powerdown(struct drm_encoder *encoder,
+@@ -676,6 +701,8 @@ static void vc4_hdmi_encoder_post_crtc_p
+ 	unsigned long flags;
+ 	int ret;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_VID_CTL,
+ 		   HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_BLANKPIX);
+@@ -690,6 +717,8 @@ static void vc4_hdmi_encoder_post_crtc_p
+ 	ret = pm_runtime_put(&vc4_hdmi->pdev->dev);
+ 	if (ret < 0)
+ 		DRM_ERROR("Failed to release power domain: %d\n", ret);
++
++	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+ static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder)
+@@ -986,6 +1015,8 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 	unsigned long flags;
+ 	int ret;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	/*
+ 	 * As stated in RPi's vc4 firmware "HDMI state machine (HSM) clock must
+ 	 * be faster than pixel clock, infinitesimally faster, tested in
+@@ -1006,13 +1037,13 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 	ret = clk_set_min_rate(vc4_hdmi->hsm_clock, hsm_rate);
+ 	if (ret) {
+ 		DRM_ERROR("Failed to set HSM clock rate: %d\n", ret);
+-		return;
++		goto out;
+ 	}
+ 
+ 	ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
+ 	if (ret < 0) {
+ 		DRM_ERROR("Failed to retain power domain: %d\n", ret);
+-		return;
++		goto out;
+ 	}
+ 
+ 	ret = clk_set_rate(vc4_hdmi->pixel_clock, pixel_rate);
+@@ -1064,13 +1095,16 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 	if (vc4_hdmi->variant->set_timings)
+ 		vc4_hdmi->variant->set_timings(vc4_hdmi, conn_state, mode);
+ 
++	mutex_unlock(&vc4_hdmi->mutex);
++
+ 	return;
+ 
+ err_disable_pixel_clock:
+ 	clk_disable_unprepare(vc4_hdmi->pixel_clock);
+ err_put_runtime_pm:
+ 	pm_runtime_put(&vc4_hdmi->pdev->dev);
+-
++out:
++	mutex_unlock(&vc4_hdmi->mutex);
+ 	return;
+ }
+ 
+@@ -1082,6 +1116,8 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	unsigned long flags;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	if (vc4_encoder->hdmi_monitor &&
+ 	    drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED) {
+ 		if (vc4_hdmi->variant->csc_setup)
+@@ -1098,6 +1134,8 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_FIFO_CTL, VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N);
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
++	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
+@@ -1111,6 +1149,8 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 	unsigned long flags;
+ 	int ret;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	HDMI_WRITE(HDMI_VID_CTL,
+@@ -1170,6 +1210,8 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 
+ 	vc4_hdmi_recenter_fifo(vc4_hdmi);
+ 	vc4_hdmi_enable_scrambling(encoder);
++
++	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+ static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder)
+@@ -1313,6 +1355,7 @@ static void vc4_hdmi_set_n_cts(struct vc
+ 	u32 n, cts;
+ 	u64 tmp;
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
+ 	lockdep_assert_held(&vc4_hdmi->hw_lock);
+ 
+ 	n = 128 * samplerate / 1000;
+@@ -1346,13 +1389,17 @@ static int vc4_hdmi_audio_startup(struct
+ 	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
+ 	unsigned long flags;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	/*
+ 	 * If the HDMI encoder hasn't probed, or the encoder is
+ 	 * currently in DVI mode, treat the codec dai as missing.
+ 	 */
+ 	if (!encoder->crtc || !(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &
+-				VC4_HDMI_RAM_PACKET_ENABLE))
++				VC4_HDMI_RAM_PACKET_ENABLE)) {
++		mutex_unlock(&vc4_hdmi->mutex);
+ 		return -ENODEV;
++	}
+ 
+ 	vc4_hdmi->audio.streaming = true;
+ 
+@@ -1368,6 +1415,8 @@ static int vc4_hdmi_audio_startup(struct
+ 	if (vc4_hdmi->variant->phy_rng_enable)
+ 		vc4_hdmi->variant->phy_rng_enable(vc4_hdmi);
+ 
++	mutex_unlock(&vc4_hdmi->mutex);
++
+ 	return 0;
+ }
+ 
+@@ -1378,6 +1427,8 @@ static void vc4_hdmi_audio_reset(struct
+ 	unsigned long flags;
+ 	int ret;
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
+ 	vc4_hdmi->audio.streaming = false;
+ 	ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO, false);
+ 	if (ret)
+@@ -1397,6 +1448,8 @@ static void vc4_hdmi_audio_shutdown(stru
+ 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
+ 	unsigned long flags;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	HDMI_WRITE(HDMI_MAI_CTL,
+@@ -1411,6 +1464,8 @@ static void vc4_hdmi_audio_shutdown(stru
+ 
+ 	vc4_hdmi->audio.streaming = false;
+ 	vc4_hdmi_audio_reset(vc4_hdmi);
++
++	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+ static int sample_rate_to_mai_fmt(int samplerate)
+@@ -1469,6 +1524,8 @@ static int vc4_hdmi_audio_prepare(struct
+ 	dev_dbg(dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
+ 		sample_rate, params->sample_width, channels);
+ 
++	mutex_lock(&vc4_hdmi->mutex);
++
+ 	vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate);
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+@@ -1523,6 +1580,8 @@ static int vc4_hdmi_audio_prepare(struct
+ 	memcpy(&vc4_hdmi->audio.infoframe, &params->cea, sizeof(params->cea));
+ 	vc4_hdmi_set_audio_infoframe(encoder);
+ 
++	mutex_unlock(&vc4_hdmi->mutex);
++
+ 	return 0;
+ }
+ 
+@@ -1565,7 +1624,9 @@ static int vc4_hdmi_audio_get_eld(struct
+ 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
+ 	struct drm_connector *connector = &vc4_hdmi->connector;
+ 
++	mutex_lock(&vc4_hdmi->mutex);
+ 	memcpy(buf, connector->eld, min(sizeof(connector->eld), len));
++	mutex_unlock(&vc4_hdmi->mutex);
+ 
+ 	return 0;
+ }
+@@ -1902,6 +1963,17 @@ static int vc4_hdmi_cec_enable(struct ce
+ 	u32 val;
+ 	int ret;
+ 
++	/*
++	 * NOTE: This function should really take vc4_hdmi->mutex, but doing so
++	 * results in a reentrancy since cec_s_phys_addr_from_edid() called in
++	 * .detect or .get_modes might call .adap_enable, which leads to this
++	 * function being called with that mutex held.
++	 *
++	 * Concurrency is not an issue for the moment since we don't share any
++	 * state with KMS, so we can ignore the lock for now, but we need to
++	 * keep it in mind if we were to change that assumption.
++	 */
++
+ 	ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
+ 	if (ret)
+ 		return ret;
+@@ -1948,6 +2020,17 @@ static int vc4_hdmi_cec_disable(struct c
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
+ 	unsigned long flags;
+ 
++	/*
++	 * NOTE: This function should really take vc4_hdmi->mutex, but doing so
++	 * results in a reentrancy since cec_s_phys_addr_from_edid() called in
++	 * .detect or .get_modes might call .adap_enable, which leads to this
++	 * function being called with that mutex held.
++	 *
++	 * Concurrency is not an issue for the moment since we don't share any
++	 * state with KMS, so we can ignore the lock for now, but we need to
++	 * keep it in mind if we were to change that assumption.
++	 */
++
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	if (!vc4_hdmi->variant->external_irq_controller)
+@@ -1976,6 +2059,17 @@ static int vc4_hdmi_cec_adap_log_addr(st
+ 	struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
+ 	unsigned long flags;
+ 
++	/*
++	 * NOTE: This function should really take vc4_hdmi->mutex, but doing so
++	 * results in a reentrancy since cec_s_phys_addr_from_edid() called in
++	 * .detect or .get_modes might call .adap_enable, which leads to this
++	 * function being called with that mutex held.
++	 *
++	 * Concurrency is not an issue for the moment since we don't share any
++	 * state with KMS, so we can ignore the lock for now, but we need to
++	 * keep it in mind if we were to change that assumption.
++	 */
++
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_CEC_CNTRL_1,
+ 		   (HDMI_READ(HDMI_CEC_CNTRL_1) & ~VC4_HDMI_CEC_ADDR_MASK) |
+@@ -1994,6 +2088,17 @@ static int vc4_hdmi_cec_adap_transmit(st
+ 	u32 val;
+ 	unsigned int i;
+ 
++	/*
++	 * NOTE: This function should really take vc4_hdmi->mutex, but doing so
++	 * results in a reentrancy since cec_s_phys_addr_from_edid() called in
++	 * .detect or .get_modes might call .adap_enable, which leads to this
++	 * function being called with that mutex held.
++	 *
++	 * Concurrency is not an issue for the moment since we don't share any
++	 * state with KMS, so we can ignore the lock for now, but we need to
++	 * keep it in mind if we were to change that assumption.
++	 */
++
+ 	if (msg->len > 16) {
+ 		drm_err(dev, "Attempting to transmit too much data (%d)\n", msg->len);
+ 		return -ENOMEM;
+@@ -2349,6 +2454,7 @@ static int vc4_hdmi_bind(struct device *
+ 	vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL);
+ 	if (!vc4_hdmi)
+ 		return -ENOMEM;
++	mutex_init(&vc4_hdmi->mutex);
+ 	spin_lock_init(&vc4_hdmi->hw_lock);
+ 	INIT_DELAYED_WORK(&vc4_hdmi->scrambling_work, vc4_hdmi_scrambling_wq);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -184,6 +184,20 @@ struct vc4_hdmi {
+ 	 * @hw_lock: Spinlock protecting device register access.
+ 	 */
+ 	spinlock_t hw_lock;
++
++	/**
++	 * @mutex: Mutex protecting the driver access across multiple
++	 * frameworks (KMS, ALSA).
++	 *
++	 * NOTE: While supported, CEC has been left out since
++	 * cec_s_phys_addr_from_edid() might call .adap_enable and lead to a
++	 * reentrancy issue between .get_modes (or .detect) and .adap_enable.
++	 * Since we don't share any state between the CEC hooks and KMS', it's
++	 * not a big deal. The only trouble might come from updating the CEC
++	 * clock divider which might be affected by a modeset, but CEC should
++	 * be resilient to that.
++	 */
++	struct mutex mutex;
+ };
+ 
+ static inline struct vc4_hdmi *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0009-drm-vc4-hdmi-Prevent-access-to-crtc-state-outside-of.patch b/target/linux/bcm27xx/patches-5.15/950-0009-drm-vc4-hdmi-Prevent-access-to-crtc-state-outside-of.patch
new file mode 100644
index 0000000000..7d29e95514
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0009-drm-vc4-hdmi-Prevent-access-to-crtc-state-outside-of.patch
@@ -0,0 +1,161 @@
+From d6ecbdcba5174488d403ccddc016721243eb1797 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Tue, 19 Oct 2021 14:19:29 +0200
+Subject: [PATCH] drm/vc4: hdmi: Prevent access to crtc->state outside
+ of KMS
+
+Accessing the crtc->state pointer from outside the modesetting context
+is not allowed. We thus need to copy whatever we need from the KMS state
+to our structure in order to access it.
+
+However, in the vc4 HDMI driver we do use that pointer in the ALSA code
+path, and potentially in the hotplug interrupt handler path.
+
+These paths both need access to the CRTC adjusted mode in order for the
+proper dividers to be set for ALSA, and the scrambler state to be
+reinstated properly for hotplug.
+
+Let's copy this mode into our private encoder structure and reference it
+from there when needed. Since that part is shared between KMS and other
+paths, we need to protect it using our mutex.
+
+Link: https://lore.kernel.org/all/YWgteNaNeaS9uWDe@phenom.ffwll.local/
+Fixes: bb7d78568814 ("drm/vc4: Add HDMI audio support")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 38 +++++++++++++++++++++++-----------
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  6 ++++++
+ 2 files changed, 32 insertions(+), 12 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -484,8 +484,7 @@ static void vc4_hdmi_set_avi_infoframe(s
+ 	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	struct drm_connector *connector = &vc4_hdmi->connector;
+ 	struct drm_connector_state *cstate = connector->state;
+-	struct drm_crtc *crtc = encoder->crtc;
+-	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
++	const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	union hdmi_infoframe frame;
+ 	int ret;
+ 
+@@ -597,8 +596,8 @@ static bool vc4_hdmi_supports_scrambling
+ 
+ static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
+ {
+-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	unsigned long flags;
+ 
+ 	lockdep_assert_held(&vc4_hdmi->mutex);
+@@ -624,18 +623,21 @@ static void vc4_hdmi_enable_scrambling(s
+ static void vc4_hdmi_disable_scrambling(struct drm_encoder *encoder)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	struct drm_crtc *crtc = encoder->crtc;
+ 	unsigned long flags;
+ 
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
+ 	/*
+ 	 * At boot, encoder->crtc will be NULL. Since we don't know the
+ 	 * state of the scrambler and in order to avoid any
+ 	 * inconsistency, let's disable it all the time.
+ 	 */
+-	if (crtc && !vc4_hdmi_supports_scrambling(encoder, &crtc->mode))
++	if (crtc && !vc4_hdmi_supports_scrambling(encoder, mode))
+ 		return;
+ 
+-	if (crtc && !vc4_hdmi_mode_needs_scrambling(&crtc->mode))
++	if (crtc && !vc4_hdmi_mode_needs_scrambling(mode))
+ 		return;
+ 
+ 	if (delayed_work_pending(&vc4_hdmi->scrambling_work))
+@@ -1008,8 +1010,8 @@ static void vc4_hdmi_encoder_pre_crtc_co
+ 		vc4_hdmi_encoder_get_connector_state(encoder, state);
+ 	struct vc4_hdmi_connector_state *vc4_conn_state =
+ 		conn_state_to_vc4_hdmi_conn_state(conn_state);
+-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	unsigned long pixel_rate = vc4_conn_state->pixel_rate;
+ 	unsigned long bvb_rate, hsm_rate;
+ 	unsigned long flags;
+@@ -1111,9 +1113,9 @@ out:
+ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder,
+ 					     struct drm_atomic_state *state)
+ {
+-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+-	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
++	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	unsigned long flags;
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+@@ -1141,8 +1143,8 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
+ 					      struct drm_atomic_state *state)
+ {
+-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC;
+ 	bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC;
+@@ -1218,6 +1220,19 @@ static void vc4_hdmi_encoder_enable(stru
+ {
+ }
+ 
++static void vc4_hdmi_encoder_atomic_mode_set(struct drm_encoder *encoder,
++					     struct drm_crtc_state *crtc_state,
++					     struct drm_connector_state *conn_state)
++{
++	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++
++	mutex_lock(&vc4_hdmi->mutex);
++	memcpy(&vc4_hdmi->saved_adjusted_mode,
++	       &crtc_state->adjusted_mode,
++	       sizeof(vc4_hdmi->saved_adjusted_mode));
++	mutex_unlock(&vc4_hdmi->mutex);
++}
++
+ #define WIFI_2_4GHz_CH1_MIN_FREQ	2400000000ULL
+ #define WIFI_2_4GHz_CH1_MAX_FREQ	2422000000ULL
+ 
+@@ -1296,6 +1311,7 @@ vc4_hdmi_encoder_mode_valid(struct drm_e
+ 
+ static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = {
+ 	.atomic_check = vc4_hdmi_encoder_atomic_check,
++	.atomic_mode_set = vc4_hdmi_encoder_atomic_mode_set,
+ 	.mode_valid = vc4_hdmi_encoder_mode_valid,
+ 	.disable = vc4_hdmi_encoder_disable,
+ 	.enable = vc4_hdmi_encoder_enable,
+@@ -1349,9 +1365,7 @@ static void vc4_hdmi_audio_set_mai_clock
+ 
+ static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi, unsigned int samplerate)
+ {
+-	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
+-	struct drm_crtc *crtc = encoder->crtc;
+-	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
++	const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	u32 n, cts;
+ 	u64 tmp;
+ 
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -198,6 +198,12 @@ struct vc4_hdmi {
+ 	 * be resilient to that.
+ 	 */
+ 	struct mutex mutex;
++
++	/**
++	 * @saved_adjusted_mode: Copy of @drm_crtc_state.adjusted_mode
++	 * for use by ALSA hooks and interrupt handlers. Protected by @mutex.
++	 */
++	struct drm_display_mode saved_adjusted_mode;
+ };
+ 
+ static inline struct vc4_hdmi *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0010-drm-vc4-hdmi-Check-the-device-state-in-prepare.patch b/target/linux/bcm27xx/patches-5.15/950-0010-drm-vc4-hdmi-Check-the-device-state-in-prepare.patch
new file mode 100644
index 0000000000..dac66f902b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0010-drm-vc4-hdmi-Check-the-device-state-in-prepare.patch
@@ -0,0 +1,77 @@
+From ba0375640d2d82158600a398181bb9f9c3835d0a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 24 Sep 2021 14:27:38 +0200
+Subject: [PATCH] drm/vc4: hdmi: Check the device state in prepare()
+
+Even though we already check that the encoder->crtc pointer is there
+during in startup(), which is part of the open() path in ASoC, nothing
+guarantees that our encoder state won't change between the time when we
+open the device and the time we prepare it.
+
+Move the sanity checks we do in startup() to a helper and call it from
+prepare().
+
+Fixes: 91e99e113929 ("drm/vc4: hdmi: Register HDMI codec")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 35 +++++++++++++++++++++++++++-------
+ 1 file changed, 28 insertions(+), 7 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1397,20 +1397,36 @@ static inline struct vc4_hdmi *dai_to_hd
+ 	return snd_soc_card_get_drvdata(card);
+ }
+ 
++static bool vc4_hdmi_audio_can_stream(struct vc4_hdmi *vc4_hdmi)
++{
++	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
++
++	lockdep_assert_held(&vc4_hdmi->mutex);
++
++	/*
++	 * The encoder doesn't have a CRTC until the first modeset.
++	 */
++	if (!encoder->crtc)
++		return false;
++
++	/*
++	 * If the encoder is currently in DVI mode, treat the codec DAI
++	 * as missing.
++	 */
++	if (!(HDMI_READ(HDMI_RAM_PACKET_CONFIG) & VC4_HDMI_RAM_PACKET_ENABLE))
++		return false;
++
++	return true;
++}
++
+ static int vc4_hdmi_audio_startup(struct device *dev, void *data)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
+-	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
+ 	unsigned long flags;
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 
+-	/*
+-	 * If the HDMI encoder hasn't probed, or the encoder is
+-	 * currently in DVI mode, treat the codec dai as missing.
+-	 */
+-	if (!encoder->crtc || !(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &
+-				VC4_HDMI_RAM_PACKET_ENABLE)) {
++	if (!vc4_hdmi_audio_can_stream(vc4_hdmi)) {
+ 		mutex_unlock(&vc4_hdmi->mutex);
+ 		return -ENODEV;
+ 	}
+@@ -1540,6 +1556,11 @@ static int vc4_hdmi_audio_prepare(struct
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 
++	if (!vc4_hdmi_audio_can_stream(vc4_hdmi)) {
++		mutex_unlock(&vc4_hdmi->mutex);
++		return -EINVAL;
++	}
++
+ 	vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate);
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0011-drm-vc4-hdmi-Introduce-an-output_enabled-flag.patch b/target/linux/bcm27xx/patches-5.15/950-0011-drm-vc4-hdmi-Introduce-an-output_enabled-flag.patch
new file mode 100644
index 0000000000..616cfd54d1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0011-drm-vc4-hdmi-Introduce-an-output_enabled-flag.patch
@@ -0,0 +1,78 @@
+From 02631cb4e30d7bc46f2b30657a84ddeb65831798 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Tue, 19 Oct 2021 17:31:58 +0200
+Subject: [PATCH] drm/vc4: hdmi: Introduce an output_enabled flag
+
+We currently poke at encoder->crtc in the ALSA code path to determine
+whether the HDMI output is enabled or not, and thus whether we should
+allow the audio output.
+
+However, that pointer is deprecated and shouldn't really be used by
+atomic drivers anymore. Since we have the infrastructure in place now,
+let's just create a flag that we toggle to report whether the controller
+is currently enabled and use that instead of encoder->crtc in ALSA.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 16 ++++++++++++----
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  6 ++++++
+ 2 files changed, 18 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -725,6 +725,11 @@ static void vc4_hdmi_encoder_post_crtc_p
+ 
+ static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder)
+ {
++	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++
++	mutex_lock(&vc4_hdmi->mutex);
++	vc4_hdmi->output_enabled = false;
++	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+ static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, bool enable)
+@@ -1218,6 +1223,11 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 
+ static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder)
+ {
++	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++
++	mutex_lock(&vc4_hdmi->mutex);
++	vc4_hdmi->output_enabled = true;
++	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+ static void vc4_hdmi_encoder_atomic_mode_set(struct drm_encoder *encoder,
+@@ -1399,14 +1409,12 @@ static inline struct vc4_hdmi *dai_to_hd
+ 
+ static bool vc4_hdmi_audio_can_stream(struct vc4_hdmi *vc4_hdmi)
+ {
+-	struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
+-
+ 	lockdep_assert_held(&vc4_hdmi->mutex);
+ 
+ 	/*
+-	 * The encoder doesn't have a CRTC until the first modeset.
++	 * If the controller is disabled, prevent any ALSA output.
+ 	 */
+-	if (!encoder->crtc)
++	if (!vc4_hdmi->output_enabled)
+ 		return false;
+ 
+ 	/*
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -204,6 +204,12 @@ struct vc4_hdmi {
+ 	 * for use by ALSA hooks and interrupt handlers. Protected by @mutex.
+ 	 */
+ 	struct drm_display_mode saved_adjusted_mode;
++
++	/**
++	 * @output_enabled: Is the HDMI controller currently active?
++	 * Protected by @mutex.
++	 */
++	bool output_enabled;
+ };
+ 
+ static inline struct vc4_hdmi *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0012-drm-vc4-hdmi-Introduce-a-scdc_enabled-flag.patch b/target/linux/bcm27xx/patches-5.15/950-0012-drm-vc4-hdmi-Introduce-a-scdc_enabled-flag.patch
new file mode 100644
index 0000000000..888de174e2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0012-drm-vc4-hdmi-Introduce-a-scdc_enabled-flag.patch
@@ -0,0 +1,101 @@
+From 4b98173449085326199e97a10d06cee4cce021a1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Tue, 19 Oct 2021 19:13:46 +0200
+Subject: [PATCH] drm/vc4: hdmi: Introduce a scdc_enabled flag
+
+We currently rely on two functions, vc4_hdmi_supports_scrambling() and
+vc4_hdmi_mode_needs_scrambling() to determine if we should enable and
+disable the scrambler for any given mode.
+
+Since we might need to disable the controller at boot, we also always
+run vc4_hdmi_disable_scrambling() and thus call those functions without
+a mode yet, which in turns need to make some special casing in order for
+it to work.
+
+Instead of duplicating the check for whether or not we need to take care
+of the scrambler in both vc4_hdmi_enable_scrambling() and
+vc4_hdmi_disable_scrambling(), we can do that check only when we enable
+it and store whether or not it's been enabled in our private structure.
+
+We also need to initialize that flag at true to make sure we disable the
+scrambler at boot since we can't really know its state yet.
+
+This allows to simplify a bit that part of the driver, and removes one
+user of our copy of the CRTC adjusted mode outside of KMS (since
+vc4_hdmi_disable_scrambling() might be called from the hotplug interrupt
+handler).
+
+It also removes our last user of the legacy encoder->crtc pointer.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 22 ++++++++++++----------
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  6 ++++++
+ 2 files changed, 18 insertions(+), 10 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -616,6 +616,8 @@ static void vc4_hdmi_enable_scrambling(s
+ 		   VC5_HDMI_SCRAMBLER_CTL_ENABLE);
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
++	vc4_hdmi->scdc_enabled = true;
++
+ 	queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work,
+ 			   msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS));
+ }
+@@ -623,22 +625,14 @@ static void vc4_hdmi_enable_scrambling(s
+ static void vc4_hdmi_disable_scrambling(struct drm_encoder *encoder)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+-	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+-	struct drm_crtc *crtc = encoder->crtc;
+ 	unsigned long flags;
+ 
+ 	lockdep_assert_held(&vc4_hdmi->mutex);
+ 
+-	/*
+-	 * At boot, encoder->crtc will be NULL. Since we don't know the
+-	 * state of the scrambler and in order to avoid any
+-	 * inconsistency, let's disable it all the time.
+-	 */
+-	if (crtc && !vc4_hdmi_supports_scrambling(encoder, mode))
++	if (!vc4_hdmi->scdc_enabled)
+ 		return;
+ 
+-	if (crtc && !vc4_hdmi_mode_needs_scrambling(mode))
+-		return;
++	vc4_hdmi->scdc_enabled = false;
+ 
+ 	if (delayed_work_pending(&vc4_hdmi->scrambling_work))
+ 		cancel_delayed_work_sync(&vc4_hdmi->scrambling_work);
+@@ -2512,6 +2506,14 @@ static int vc4_hdmi_bind(struct device *
+ 	vc4_hdmi->pdev = pdev;
+ 	vc4_hdmi->variant = variant;
+ 
++	/*
++	 * Since we don't know the state of the controller and its
++	 * display (if any), let's assume it's always enabled.
++	 * vc4_hdmi_disable_scrambling() will thus run at boot, make
++	 * sure it's disabled, and avoid any inconsistency.
++	 */
++	vc4_hdmi->scdc_enabled = true;
++
+ 	ret = variant->init_resources(vc4_hdmi);
+ 	if (ret)
+ 		return ret;
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -210,6 +210,12 @@ struct vc4_hdmi {
+ 	 * Protected by @mutex.
+ 	 */
+ 	bool output_enabled;
++
++	/**
++	 * @scdc_enabled: Is the HDMI controller currently running with
++	 * the scrambler on? Protected by @mutex.
++	 */
++	bool scdc_enabled;
+ };
+ 
+ static inline struct vc4_hdmi *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0013-drm-vc4-Make-vc4_crtc_get_encoder-public.patch b/target/linux/bcm27xx/patches-5.15/950-0013-drm-vc4-Make-vc4_crtc_get_encoder-public.patch
new file mode 100644
index 0000000000..6258f1a86b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0013-drm-vc4-Make-vc4_crtc_get_encoder-public.patch
@@ -0,0 +1,45 @@
+From e83ac8f131b0f691e2a35866fa67b484c7256a49 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 26 May 2021 16:07:01 +0200
+Subject: [PATCH] drm/vc4: Make vc4_crtc_get_encoder public
+
+We'll need that function in vc4_kms to compute the core clock rate
+requirements.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 8 ++++----
+ drivers/gpu/drm/vc4/vc4_drv.h  | 5 +++++
+ 2 files changed, 9 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -281,10 +281,10 @@ static u32 vc4_crtc_get_fifo_full_level_
+  * allows drivers to push pixels to more than one encoder from the
+  * same CRTC.
+  */
+-static struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+-						struct drm_atomic_state *state,
+-						struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
+-											 struct drm_connector *connector))
++struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
++					 struct drm_atomic_state *state,
++					 struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
++										  struct drm_connector *connector))
+ {
+ 	struct drm_connector *connector;
+ 	struct drm_connector_list_iter conn_iter;
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -544,6 +544,11 @@ vc4_crtc_to_vc4_pv_data(const struct vc4
+ 	return container_of(data, struct vc4_pv_data, base);
+ }
+ 
++struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
++					 struct drm_atomic_state *state,
++					 struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
++										  struct drm_connector *connector));
++
+ struct vc4_crtc_state {
+ 	struct drm_crtc_state base;
+ 	/* Dlist area for this CRTC configuration. */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0014-drm-vc4-crtc-Add-encoder-to-vc4_crtc_config_pv-proto.patch b/target/linux/bcm27xx/patches-5.15/950-0014-drm-vc4-crtc-Add-encoder-to-vc4_crtc_config_pv-proto.patch
new file mode 100644
index 0000000000..236706bc4a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0014-drm-vc4-crtc-Add-encoder-to-vc4_crtc_config_pv-proto.patch
@@ -0,0 +1,43 @@
+From 28f071bd81de9d9026587c9fe7a6f9c3781a30cf Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 14 Jun 2021 15:27:24 +0200
+Subject: [PATCH] drm/vc4: crtc: Add encoder to vc4_crtc_config_pv
+ prototype
+
+vc4_crtc_config_pv() retrieves the encoder again, even though its only
+caller, vc4_crtc_atomic_enable(), already did.
+
+Pass the encoder pointer as an argument instead of going through all the
+connectors to retrieve it again.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -315,12 +315,11 @@ static void vc4_crtc_pixelvalve_reset(st
+ 	CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_FIFO_CLR);
+ }
+ 
+-static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_atomic_state *state)
++static void vc4_crtc_config_pv(struct drm_crtc *crtc, struct drm_encoder *encoder,
++			       struct drm_atomic_state *state)
+ {
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+-	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, state,
+-							   drm_atomic_get_new_connector_state);
+ 	struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	const struct vc4_pv_data *pv_data = vc4_crtc_to_vc4_pv_data(vc4_crtc);
+@@ -599,7 +598,7 @@ static void vc4_crtc_atomic_enable(struc
+ 	if (vc4_encoder->pre_crtc_configure)
+ 		vc4_encoder->pre_crtc_configure(encoder, state);
+ 
+-	vc4_crtc_config_pv(crtc, state);
++	vc4_crtc_config_pv(crtc, encoder, state);
+ 
+ 	CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_EN);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0015-drm-vc4-crtc-Rework-the-encoder-retrieval-code-again.patch b/target/linux/bcm27xx/patches-5.15/950-0015-drm-vc4-crtc-Rework-the-encoder-retrieval-code-again.patch
new file mode 100644
index 0000000000..d247ec2e4f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0015-drm-vc4-crtc-Rework-the-encoder-retrieval-code-again.patch
@@ -0,0 +1,96 @@
+From 0496e855a6e1acd60d4ae2e52ee906a4cffae014 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 21 Jun 2021 16:07:22 +0200
+Subject: [PATCH] drm/vc4: crtc: Rework the encoder retrieval code
+ (again)
+
+It turns out the encoder retrieval code, in addition to being
+unnecessarily complicated, has a bug when only the planes and crtcs are
+affected by a given atomic commit.
+
+Indeed, in such a case, either drm_atomic_get_old_connector_state or
+drm_atomic_get_new_connector_state will return NULL and thus our encoder
+retrieval code will not match on anything.
+
+We can however simplify the code by using drm_for_each_encoder_mask, the
+drm_crtc_state storing the encoders a given CRTC is connected to
+directly and without relying on any other state.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 30 +++++++++---------------------
+ drivers/gpu/drm/vc4/vc4_drv.h  |  4 +---
+ 2 files changed, 10 insertions(+), 24 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -282,26 +282,14 @@ static u32 vc4_crtc_get_fifo_full_level_
+  * same CRTC.
+  */
+ struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+-					 struct drm_atomic_state *state,
+-					 struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
+-										  struct drm_connector *connector))
++					 struct drm_crtc_state *state)
+ {
+-	struct drm_connector *connector;
+-	struct drm_connector_list_iter conn_iter;
++	struct drm_encoder *encoder;
+ 
+-	drm_connector_list_iter_begin(crtc->dev, &conn_iter);
+-	drm_for_each_connector_iter(connector, &conn_iter) {
+-		struct drm_connector_state *conn_state = get_state(state, connector);
+-
+-		if (!conn_state)
+-			continue;
+-
+-		if (conn_state->crtc == crtc) {
+-			drm_connector_list_iter_end(&conn_iter);
+-			return connector->encoder;
+-		}
+-	}
+-	drm_connector_list_iter_end(&conn_iter);
++	WARN_ON(hweight32(state->encoder_mask) > 1);
++
++	drm_for_each_encoder_mask(encoder, crtc->dev, state->encoder_mask)
++		return encoder;
+ 
+ 	return NULL;
+ }
+@@ -552,8 +540,7 @@ static void vc4_crtc_atomic_disable(stru
+ 	struct drm_crtc_state *old_state = drm_atomic_get_old_crtc_state(state,
+ 									 crtc);
+ 	struct vc4_crtc_state *old_vc4_state = to_vc4_crtc_state(old_state);
+-	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, state,
+-							   drm_atomic_get_old_connector_state);
++	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, old_state);
+ 	struct drm_device *dev = crtc->dev;
+ 
+ 	require_hvs_enabled(dev);
+@@ -580,10 +567,11 @@ static void vc4_crtc_atomic_disable(stru
+ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc,
+ 				   struct drm_atomic_state *state)
+ {
++	struct drm_crtc_state *new_state = drm_atomic_get_new_crtc_state(state,
++									 crtc);
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+-	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, state,
+-							   drm_atomic_get_new_connector_state);
++	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, new_state);
+ 	struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
+ 
+ 	require_hvs_enabled(dev);
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -545,9 +545,7 @@ vc4_crtc_to_vc4_pv_data(const struct vc4
+ }
+ 
+ struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+-					 struct drm_atomic_state *state,
+-					 struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
+-										  struct drm_connector *connector));
++					 struct drm_crtc_state *state);
+ 
+ struct vc4_crtc_state {
+ 	struct drm_crtc_state base;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0016-drm-vc4-crtc-Add-some-logging.patch b/target/linux/bcm27xx/patches-5.15/950-0016-drm-vc4-crtc-Add-some-logging.patch
new file mode 100644
index 0000000000..4dac614c3b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0016-drm-vc4-crtc-Add-some-logging.patch
@@ -0,0 +1,38 @@
+From 28de437934da2fb9f04b0c4f5aa73553e63894e3 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 21 Jun 2021 16:13:02 +0200
+Subject: [PATCH] drm/vc4: crtc: Add some logging
+
+The encoder retrieval code has been a source of bugs and glitches in the
+past and the crtc <-> encoder association been wrong in a number of
+different ways.
+
+Add some logging to quickly spot issues if they occur.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -543,6 +543,9 @@ static void vc4_crtc_atomic_disable(stru
+ 	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, old_state);
+ 	struct drm_device *dev = crtc->dev;
+ 
++	drm_dbg(dev, "Disabling CRTC %s (%u) connected to Encoder %s (%u)",
++		crtc->name, crtc->base.id, encoder->name, encoder->base.id);
++
+ 	require_hvs_enabled(dev);
+ 
+ 	/* Disable vblank irq handling before crtc is disabled. */
+@@ -574,6 +577,9 @@ static void vc4_crtc_atomic_enable(struc
+ 	struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc, new_state);
+ 	struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
+ 
++	drm_dbg(dev, "Enabling CRTC %s (%u) connected to Encoder %s (%u)",
++		crtc->name, crtc->base.id, encoder->name, encoder->base.id);
++
+ 	require_hvs_enabled(dev);
+ 
+ 	/* Enable vblank irq handling before crtc is started otherwise
diff --git a/target/linux/bcm27xx/patches-5.15/950-0017-drm-vc4-Leverage-the-load-tracker-on-the-BCM2711.patch b/target/linux/bcm27xx/patches-5.15/950-0017-drm-vc4-Leverage-the-load-tracker-on-the-BCM2711.patch
new file mode 100644
index 0000000000..e6b558abe0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0017-drm-vc4-Leverage-the-load-tracker-on-the-BCM2711.patch
@@ -0,0 +1,123 @@
+From 1cc57695d3103fa93eda71bb6ba212c3e5806b4a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 21 Jun 2021 17:19:22 +0200
+Subject: [PATCH] drm/vc4: Leverage the load tracker on the BCM2711
+
+The load tracker was initially designed to report and warn about a load
+too high for the HVS. To do so, it computes for each plane the impact
+it's going to have on the HVS, and will warn (if it's enabled) if we go
+over what the hardware can process.
+
+While the limits being used are a bit irrelevant to the BCM2711, the
+algorithm to compute the HVS load will be one component used in order to
+compute the core clock rate on the BCM2711.
+
+Let's remove the hooks to prevent the load tracker to do its
+computation, but since we don't have the same limits, don't check them
+against them, and prevent the debugfs file to enable it from being
+created.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_debugfs.c |  7 +++++--
+ drivers/gpu/drm/vc4/vc4_drv.h     |  3 ---
+ drivers/gpu/drm/vc4/vc4_kms.c     | 16 +++++-----------
+ drivers/gpu/drm/vc4/vc4_plane.c   |  5 -----
+ 4 files changed, 10 insertions(+), 21 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_debugfs.c
++++ b/drivers/gpu/drm/vc4/vc4_debugfs.c
+@@ -7,6 +7,7 @@
+ #include <linux/circ_buf.h>
+ #include <linux/ctype.h>
+ #include <linux/debugfs.h>
++#include <linux/platform_device.h>
+ 
+ #include "vc4_drv.h"
+ #include "vc4_regs.h"
+@@ -26,8 +27,10 @@ vc4_debugfs_init(struct drm_minor *minor
+ 	struct vc4_dev *vc4 = to_vc4_dev(minor->dev);
+ 	struct vc4_debugfs_info_entry *entry;
+ 
+-	debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
+-			    minor->debugfs_root, &vc4->load_tracker_enabled);
++	if (!of_device_is_compatible(vc4->hvs->pdev->dev.of_node,
++				     "brcm,bcm2711-vc5"))
++		debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
++				    minor->debugfs_root, &vc4->load_tracker_enabled);
+ 
+ 	list_for_each_entry(entry, &vc4->debugfs_list, link) {
+ 		drm_debugfs_create_files(&entry->info, 1,
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -202,9 +202,6 @@ struct vc4_dev {
+ 
+ 	int power_refcount;
+ 
+-	/* Set to true when the load tracker is supported. */
+-	bool load_tracker_available;
+-
+ 	/* Set to true when the load tracker is active. */
+ 	bool load_tracker_enabled;
+ 
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -554,9 +554,6 @@ static int vc4_load_tracker_atomic_check
+ 	struct drm_plane *plane;
+ 	int i;
+ 
+-	if (!vc4->load_tracker_available)
+-		return 0;
+-
+ 	priv_state = drm_atomic_get_private_obj_state(state,
+ 						      &vc4->load_tracker);
+ 	if (IS_ERR(priv_state))
+@@ -631,9 +628,6 @@ static void vc4_load_tracker_obj_fini(st
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 
+-	if (!vc4->load_tracker_available)
+-		return;
+-
+ 	drm_atomic_private_obj_fini(&vc4->load_tracker);
+ }
+ 
+@@ -641,9 +635,6 @@ static int vc4_load_tracker_obj_init(str
+ {
+ 	struct vc4_load_tracker_state *load_state;
+ 
+-	if (!vc4->load_tracker_available)
+-		return 0;
+-
+ 	load_state = kzalloc(sizeof(*load_state), GFP_KERNEL);
+ 	if (!load_state)
+ 		return -ENOMEM;
+@@ -865,9 +856,12 @@ int vc4_kms_load(struct drm_device *dev)
+ 					      "brcm,bcm2711-vc5");
+ 	int ret;
+ 
++	/*
++	 * The limits enforced by the load tracker aren't relevant for
++	 * the BCM2711, but the load tracker computations are used for
++	 * the core clock rate calculation.
++	 */
+ 	if (!is_vc5) {
+-		vc4->load_tracker_available = true;
+-
+ 		/* Start with the load tracker enabled. Can be
+ 		 * disabled through the debugfs load_tracker file.
+ 		 */
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -529,11 +529,6 @@ static void vc4_plane_calc_load(struct d
+ 	struct vc4_plane_state *vc4_state;
+ 	struct drm_crtc_state *crtc_state;
+ 	unsigned int vscale_factor;
+-	struct vc4_dev *vc4;
+-
+-	vc4 = to_vc4_dev(state->plane->dev);
+-	if (!vc4->load_tracker_available)
+-		return;
+ 
+ 	vc4_state = to_vc4_plane_state(state);
+ 	crtc_state = drm_atomic_get_existing_crtc_state(state->state,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0018-drm-vc4-Increase-the-core-clock-based-on-HVS-load.patch b/target/linux/bcm27xx/patches-5.15/950-0018-drm-vc4-Increase-the-core-clock-based-on-HVS-load.patch
new file mode 100644
index 0000000000..f8475861fe
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0018-drm-vc4-Increase-the-core-clock-based-on-HVS-load.patch
@@ -0,0 +1,242 @@
+From 99c821dc4cd65ff067e2dfff4a47ceb5aa61ad0c Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 26 May 2021 16:13:02 +0200
+Subject: [PATCH] drm/vc4: Increase the core clock based on HVS load
+
+Depending on a given HVS output (HVS to PixelValves) and input (planes
+attached to a channel) load, the HVS needs for the core clock to be
+raised above its boot time default.
+
+Failing to do so will result in a vblank timeout and a stalled display
+pipeline.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c |  15 +++++
+ drivers/gpu/drm/vc4/vc4_drv.h  |   2 +
+ drivers/gpu/drm/vc4/vc4_kms.c  | 112 ++++++++++++++++++++++++++++++---
+ 3 files changed, 119 insertions(+), 10 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -661,12 +661,27 @@ static int vc4_crtc_atomic_check(struct
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state);
+ 	struct drm_connector *conn;
+ 	struct drm_connector_state *conn_state;
++	struct drm_encoder *encoder;
+ 	int ret, i;
+ 
+ 	ret = vc4_hvs_atomic_check(crtc, state);
+ 	if (ret)
+ 		return ret;
+ 
++	encoder = vc4_get_crtc_encoder(crtc, crtc_state);
++	if (encoder) {
++		const struct drm_display_mode *mode = &crtc_state->adjusted_mode;
++		struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
++
++		mode = &crtc_state->adjusted_mode;
++		if (vc4_encoder->type == VC4_ENCODER_TYPE_HDMI0) {
++			vc4_state->hvs_load = max(mode->clock * mode->hdisplay / mode->htotal + 1000,
++						  mode->clock * 9 / 10) * 1000;
++		} else {
++			vc4_state->hvs_load = mode->clock * 1000;
++		}
++	}
++
+ 	for_each_new_connector_in_state(state, conn, conn_state,
+ 					i) {
+ 		if (conn_state->crtc != crtc)
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -558,6 +558,8 @@ struct vc4_crtc_state {
+ 		unsigned int bottom;
+ 	} margins;
+ 
++	unsigned long hvs_load;
++
+ 	/* Transitional state below, only valid during atomic commits */
+ 	bool update_muxing;
+ };
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -39,9 +39,11 @@ static struct vc4_ctm_state *to_vc4_ctm_
+ 
+ struct vc4_hvs_state {
+ 	struct drm_private_state base;
++	unsigned long core_clock_rate;
+ 
+ 	struct {
+ 		unsigned in_use: 1;
++		unsigned long fifo_load;
+ 		struct drm_crtc_commit *pending_commit;
+ 	} fifo_state[HVS_NUM_CHANNELS];
+ };
+@@ -339,11 +341,20 @@ static void vc4_atomic_commit_tail(struc
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct drm_crtc_state *new_crtc_state;
++	struct vc4_hvs_state *new_hvs_state;
+ 	struct drm_crtc *crtc;
+ 	struct vc4_hvs_state *old_hvs_state;
+ 	unsigned int channel;
+ 	int i;
+ 
++	old_hvs_state = vc4_hvs_get_old_global_state(state);
++	if (WARN_ON(!old_hvs_state))
++		return;
++
++	new_hvs_state = vc4_hvs_get_new_global_state(state);
++	if (WARN_ON(!new_hvs_state))
++		return;
++
+ 	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
+ 		struct vc4_crtc_state *vc4_crtc_state;
+ 
+@@ -354,10 +365,6 @@ static void vc4_atomic_commit_tail(struc
+ 		vc4_hvs_mask_underrun(dev, vc4_crtc_state->assigned_channel);
+ 	}
+ 
+-	old_hvs_state = vc4_hvs_get_old_global_state(state);
+-	if (IS_ERR(old_hvs_state))
+-		return;
+-
+ 	for (channel = 0; channel < HVS_NUM_CHANNELS; channel++) {
+ 		struct drm_crtc_commit *commit;
+ 		int ret;
+@@ -377,8 +384,13 @@ static void vc4_atomic_commit_tail(struc
+ 		old_hvs_state->fifo_state[channel].pending_commit = NULL;
+ 	}
+ 
+-	if (vc4->hvs->hvs5)
+-		clk_set_min_rate(hvs->core_clk, 500000000);
++	if (vc4->hvs->hvs5) {
++		unsigned long core_rate = max_t(unsigned long,
++						500000000,
++						new_hvs_state->core_clock_rate);
++
++		clk_set_min_rate(hvs->core_clk, core_rate);
++	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+ 
+@@ -401,8 +413,12 @@ static void vc4_atomic_commit_tail(struc
+ 
+ 	drm_atomic_helper_cleanup_planes(dev, state);
+ 
+-	if (vc4->hvs->hvs5)
+-		clk_set_min_rate(hvs->core_clk, 0);
++	if (vc4->hvs->hvs5) {
++		drm_dbg(dev, "Running the core clock at %lu Hz\n",
++			new_hvs_state->core_clock_rate);
++
++		clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
++	}
+ }
+ 
+ static int vc4_atomic_commit_setup(struct drm_atomic_state *state)
+@@ -659,11 +675,13 @@ vc4_hvs_channels_duplicate_state(struct
+ 
+ 	__drm_atomic_helper_private_obj_duplicate_state(obj, &state->base);
+ 
+-
+ 	for (i = 0; i < HVS_NUM_CHANNELS; i++) {
+ 		state->fifo_state[i].in_use = old_state->fifo_state[i].in_use;
++		state->fifo_state[i].fifo_load = old_state->fifo_state[i].fifo_load;
+ 	}
+ 
++	state->core_clock_rate = old_state->core_clock_rate;
++
+ 	return &state->base;
+ }
+ 
+@@ -819,6 +837,76 @@ static int vc4_pv_muxing_atomic_check(st
+ }
+ 
+ static int
++vc4_core_clock_atomic_check(struct drm_atomic_state *state)
++{
++	struct vc4_dev *vc4 = to_vc4_dev(state->dev);
++	struct drm_private_state *priv_state;
++	struct vc4_hvs_state *hvs_new_state;
++	struct vc4_load_tracker_state *load_state;
++	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
++	struct drm_crtc *crtc;
++	unsigned int num_outputs;
++	unsigned long pixel_rate;
++	unsigned long cob_rate;
++	unsigned int i;
++
++	priv_state = drm_atomic_get_private_obj_state(state,
++						      &vc4->load_tracker);
++	if (IS_ERR(priv_state))
++		return PTR_ERR(priv_state);
++
++	load_state = to_vc4_load_tracker_state(priv_state);
++
++	hvs_new_state = vc4_hvs_get_global_state(state);
++	if (!hvs_new_state)
++		return -EINVAL;
++
++	for_each_oldnew_crtc_in_state(state, crtc,
++				      old_crtc_state,
++				      new_crtc_state,
++				      i) {
++		if (old_crtc_state->active) {
++			struct vc4_crtc_state *old_vc4_state =
++				to_vc4_crtc_state(old_crtc_state);
++			unsigned int channel = old_vc4_state->assigned_channel;
++
++			hvs_new_state->fifo_state[channel].fifo_load = 0;
++		}
++
++		if (new_crtc_state->active) {
++			struct vc4_crtc_state *new_vc4_state =
++				to_vc4_crtc_state(new_crtc_state);
++			unsigned int channel = new_vc4_state->assigned_channel;
++
++			hvs_new_state->fifo_state[channel].fifo_load =
++				new_vc4_state->hvs_load;
++		}
++	}
++
++	cob_rate = 0;
++	num_outputs = 0;
++	for (i = 0; i < HVS_NUM_CHANNELS; i++) {
++		if (!hvs_new_state->fifo_state[i].in_use)
++			continue;
++
++		num_outputs++;
++		cob_rate += hvs_new_state->fifo_state[i].fifo_load;
++	}
++
++	pixel_rate = load_state->hvs_load;
++	if (num_outputs > 1) {
++		pixel_rate = (pixel_rate * 40) / 100;
++	} else {
++		pixel_rate = (pixel_rate * 60) / 100;
++	}
++
++	hvs_new_state->core_clock_rate = max(cob_rate, pixel_rate);
++
++	return 0;
++}
++
++
++static int
+ vc4_atomic_check(struct drm_device *dev, struct drm_atomic_state *state)
+ {
+ 	int ret;
+@@ -835,7 +923,11 @@ vc4_atomic_check(struct drm_device *dev,
+ 	if (ret)
+ 		return ret;
+ 
+-	return vc4_load_tracker_atomic_check(state);
++	ret = vc4_load_tracker_atomic_check(state);
++	if (ret)
++		return ret;
++
++	return vc4_core_clock_atomic_check(state);
+ }
+ 
+ static struct drm_mode_config_helper_funcs vc4_mode_config_helpers = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0019-drm-vc4-select-PM.patch b/target/linux/bcm27xx/patches-5.15/950-0019-drm-vc4-select-PM.patch
new file mode 100644
index 0000000000..e87ea31388
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0019-drm-vc4-select-PM.patch
@@ -0,0 +1,24 @@
+From 0ba0b0f41c143fe0f30ea248e55872e681870be2 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Aug 2021 15:53:03 +0200
+Subject: [PATCH] drm/vc4: select PM
+
+We already depend on runtime PM to get the power domains and clocks for
+most of the devices supported by the vc4 driver, so let's just select it
+to make sure it's there, and remove the ifdef.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/vc4/Kconfig
++++ b/drivers/gpu/drm/vc4/Kconfig
+@@ -9,6 +9,7 @@ config DRM_VC4
+ 	select DRM_KMS_CMA_HELPER
+ 	select DRM_GEM_CMA_HELPER
+ 	select DRM_PANEL_BRIDGE
++	select PM
+ 	select SND_PCM
+ 	select SND_PCM_ELD
+ 	select SND_SOC_GENERIC_DMAENGINE_PCM
diff --git a/target/linux/bcm27xx/patches-5.15/950-0020-drm-probe-helper-Create-a-HPD-IRQ-event-helper-for-a.patch b/target/linux/bcm27xx/patches-5.15/950-0020-drm-probe-helper-Create-a-HPD-IRQ-event-helper-for-a.patch
new file mode 100644
index 0000000000..4e62405b5e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0020-drm-probe-helper-Create-a-HPD-IRQ-event-helper-for-a.patch
@@ -0,0 +1,201 @@
+From 22ce134cee72bd9ef4b02c8769f868309f2ab8fd Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Aug 2021 14:37:04 +0200
+Subject: [PATCH] drm/probe-helper: Create a HPD IRQ event helper for a
+ single connector
+
+The drm_helper_hpd_irq_event() function is iterating over all the
+connectors when an hotplug event is detected.
+
+During that iteration, it will call each connector detect function and
+figure out if its status changed.
+
+Finally, if any connector changed, it will notify the user-space and the
+clients that something changed on the DRM device.
+
+This is supposed to be used for drivers that don't have a hotplug
+interrupt for individual connectors. However, drivers that can use an
+interrupt for a single connector are left in the dust and can either
+reimplement the logic used during the iteration for each connector or
+use that helper and iterate over all connectors all the time.
+
+Since both are suboptimal, let's create a helper that will only perform
+the status detection on a single connector.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+
+---
+
+Changes from v1:
+  - Rename the shared function
+  - Move the hotplug event notification out of the shared function
+  - Added missing locks
+  - Improve the documentation
+  - Switched to drm_dbg_kms
+---
+ drivers/gpu/drm/drm_probe_helper.c | 120 ++++++++++++++++++++---------
+ include/drm/drm_probe_helper.h     |   1 +
+ 2 files changed, 86 insertions(+), 35 deletions(-)
+
+--- a/drivers/gpu/drm/drm_probe_helper.c
++++ b/drivers/gpu/drm/drm_probe_helper.c
+@@ -795,6 +795,86 @@ void drm_kms_helper_poll_fini(struct drm
+ }
+ EXPORT_SYMBOL(drm_kms_helper_poll_fini);
+ 
++static bool check_connector_changed(struct drm_connector *connector)
++{
++	struct drm_device *dev = connector->dev;
++	enum drm_connector_status old_status;
++	u64 old_epoch_counter;
++	bool changed = false;
++
++	/* Only handle HPD capable connectors. */
++	drm_WARN_ON(dev, !(connector->polled & DRM_CONNECTOR_POLL_HPD));
++
++	drm_WARN_ON(dev, !mutex_is_locked(&dev->mode_config.mutex));
++
++	old_status = connector->status;
++	old_epoch_counter = connector->epoch_counter;
++
++	drm_dbg_kms(dev, "[CONNECTOR:%d:%s] Old epoch counter %llu\n",
++		    connector->base.id,
++		    connector->name,
++		    old_epoch_counter);
++
++	connector->status = drm_helper_probe_detect(connector, NULL, false);
++	drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s\n",
++		    connector->base.id,
++		    connector->name,
++		    drm_get_connector_status_name(old_status),
++		    drm_get_connector_status_name(connector->status));
++
++	drm_dbg_kms(dev, "[CONNECTOR:%d:%s] New epoch counter %llu\n",
++		    connector->base.id,
++		    connector->name,
++		    connector->epoch_counter);
++
++	/*
++	 * Check if epoch counter had changed, meaning that we need
++	 * to send a uevent.
++	 */
++	if (old_epoch_counter != connector->epoch_counter)
++		changed = true;
++
++	return changed;
++}
++
++/**
++ * drm_connector_helper_hpd_irq_event - hotplug processing
++ * @connector: drm_connector
++ *
++ * Drivers can use this helper function to run a detect cycle on a connector
++ * which has the DRM_CONNECTOR_POLL_HPD flag set in its &polled member.
++ *
++ * This helper function is useful for drivers which can track hotplug
++ * interrupts for a single connector. Drivers that want to send a
++ * hotplug event for all connectors or can't track hotplug interrupts
++ * per connector need to use drm_helper_hpd_irq_event().
++ *
++ * This function must be called from process context with no mode
++ * setting locks held.
++ *
++ * Note that a connector can be both polled and probed from the hotplug
++ * handler, in case the hotplug interrupt is known to be unreliable.
++ */
++bool drm_connector_helper_hpd_irq_event(struct drm_connector *connector)
++{
++	struct drm_device *dev = connector->dev;
++	bool changed;
++
++	mutex_lock(&dev->mode_config.mutex);
++	changed = check_connector_changed(connector);
++	mutex_unlock(&dev->mode_config.mutex);
++
++	if (changed) {
++		drm_kms_helper_hotplug_event(dev);
++		drm_dbg_kms(dev, "[CONNECTOR:%d:%s] Sent hotplug event\n",
++			    connector->base.id,
++			    connector->name);
++	}
++
++	return changed;
++}
++EXPORT_SYMBOL(drm_connector_helper_hpd_irq_event);
++
+ /**
+  * drm_helper_hpd_irq_event - hotplug processing
+  * @dev: drm_device
+@@ -808,9 +888,10 @@ EXPORT_SYMBOL(drm_kms_helper_poll_fini);
+  * interrupts for each connector.
+  *
+  * Drivers which support hotplug interrupts for each connector individually and
+- * which have a more fine-grained detect logic should bypass this code and
+- * directly call drm_kms_helper_hotplug_event() in case the connector state
+- * changed.
++ * which have a more fine-grained detect logic can use
++ * drm_connector_helper_hpd_irq_event(). Alternatively, they should bypass this
++ * code and directly call drm_kms_helper_hotplug_event() in case the connector
++ * state changed.
+  *
+  * This function must be called from process context with no mode
+  * setting locks held.
+@@ -822,9 +903,7 @@ bool drm_helper_hpd_irq_event(struct drm
+ {
+ 	struct drm_connector *connector;
+ 	struct drm_connector_list_iter conn_iter;
+-	enum drm_connector_status old_status;
+ 	bool changed = false;
+-	u64 old_epoch_counter;
+ 
+ 	if (!dev->mode_config.poll_enabled)
+ 		return false;
+@@ -832,37 +911,8 @@ bool drm_helper_hpd_irq_event(struct drm
+ 	mutex_lock(&dev->mode_config.mutex);
+ 	drm_connector_list_iter_begin(dev, &conn_iter);
+ 	drm_for_each_connector_iter(connector, &conn_iter) {
+-		/* Only handle HPD capable connectors. */
+-		if (!(connector->polled & DRM_CONNECTOR_POLL_HPD))
+-			continue;
+-
+-		old_status = connector->status;
+-
+-		old_epoch_counter = connector->epoch_counter;
+-
+-		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Old epoch counter %llu\n", connector->base.id,
+-			      connector->name,
+-			      old_epoch_counter);
+-
+-		connector->status = drm_helper_probe_detect(connector, NULL, false);
+-		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n",
+-			      connector->base.id,
+-			      connector->name,
+-			      drm_get_connector_status_name(old_status),
+-			      drm_get_connector_status_name(connector->status));
+-
+-		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] New epoch counter %llu\n",
+-			      connector->base.id,
+-			      connector->name,
+-			      connector->epoch_counter);
+-
+-		/*
+-		 * Check if epoch counter had changed, meaning that we need
+-		 * to send a uevent.
+-		 */
+-		if (old_epoch_counter != connector->epoch_counter)
++		if (check_connector_changed(connector))
+ 			changed = true;
+-
+ 	}
+ 	drm_connector_list_iter_end(&conn_iter);
+ 	mutex_unlock(&dev->mode_config.mutex);
+--- a/include/drm/drm_probe_helper.h
++++ b/include/drm/drm_probe_helper.h
+@@ -18,6 +18,7 @@ int drm_helper_probe_detect(struct drm_c
+ void drm_kms_helper_poll_init(struct drm_device *dev);
+ void drm_kms_helper_poll_fini(struct drm_device *dev);
+ bool drm_helper_hpd_irq_event(struct drm_device *dev);
++bool drm_connector_helper_hpd_irq_event(struct drm_connector *connector);
+ void drm_kms_helper_hotplug_event(struct drm_device *dev);
+ 
+ void drm_kms_helper_poll_disable(struct drm_device *dev);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0021-drm-vc4-hdmi-Actually-check-for-the-connector-status.patch b/target/linux/bcm27xx/patches-5.15/950-0021-drm-vc4-hdmi-Actually-check-for-the-connector-status.patch
new file mode 100644
index 0000000000..44e4d66cc3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0021-drm-vc4-hdmi-Actually-check-for-the-connector-status.patch
@@ -0,0 +1,60 @@
+From b30b747d76946fb176bb4b044c830415d551b7bb Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 19 Aug 2021 13:50:12 +0200
+Subject: [PATCH] drm/vc4: hdmi: Actually check for the connector
+ status in hotplug
+
+The drm_helper_hpd_irq_event() documentation states that this function
+is "useful for drivers which can't or don't track hotplug interrupts for
+each connector." and that "Drivers which support hotplug interrupts for
+each connector individually and which have a more fine-grained detect
+logic should bypass this code and directly call
+drm_kms_helper_hotplug_event()". This is thus what we ended-up doing.
+
+However, what this actually means, and is further explained in the
+drm_kms_helper_hotplug_event() documentation, is that
+drm_kms_helper_hotplug_event() should be called by drivers that can
+track the connection status change, and if it has changed we should call
+that function.
+
+This underlying expectation we failed to provide is that the caller of
+drm_kms_helper_hotplug_event() should call drm_helper_probe_detect() to
+probe the new status of the connector.
+
+Since we didn't do it, it meant that even though we were sending the
+notification to user-space and the DRM clients that something changed we
+never probed or updated our internal connector status ourselves.
+
+This went mostly unnoticed since the detect callback usually doesn't
+have any side-effect. Also, if we were using the DRM fbdev emulation
+(which is a DRM client), or any user-space application that can deal
+with hotplug events, chances are they would react to the hotplug event
+by probing the connector status eventually.
+
+However, now that we have to enable the scrambler in detect() if it was
+enabled it has a side effect, and an application such as Kodi or
+modetest doesn't deal with hotplug events. This resulted with a black
+screen when Kodi or modetest was running when a screen was disconnected
+and then reconnected, or switched off and on.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1792,10 +1792,11 @@ static void vc4_hdmi_audio_exit(struct v
+ static irqreturn_t vc4_hdmi_hpd_irq_thread(int irq, void *priv)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = priv;
+-	struct drm_device *dev = vc4_hdmi->connector.dev;
++	struct drm_connector *connector = &vc4_hdmi->connector;
++	struct drm_device *dev = connector->dev;
+ 
+ 	if (dev && dev->registered)
+-		drm_kms_helper_hotplug_event(dev);
++		drm_connector_helper_hpd_irq_event(connector);
+ 
+ 	return IRQ_HANDLED;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0022-firmware-raspberrypi-Add-RPI_FIRMWARE_NOTIFY_DISPLAY.patch b/target/linux/bcm27xx/patches-5.15/950-0022-firmware-raspberrypi-Add-RPI_FIRMWARE_NOTIFY_DISPLAY.patch
new file mode 100644
index 0000000000..bbb50fc989
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0022-firmware-raspberrypi-Add-RPI_FIRMWARE_NOTIFY_DISPLAY.patch
@@ -0,0 +1,27 @@
+From 269985a75363eecabfc6e039c4731100c4d47b05 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 15 Dec 2021 10:51:14 +0100
+Subject: [PATCH] firmware: raspberrypi: Add
+ RPI_FIRMWARE_NOTIFY_DISPLAY_DONE
+
+The RPI_FIRMWARE_NOTIFY_DISPLAY_DONE firmware call allows to tell the
+firmware the kernel is in charge of the display now and the firmware can
+free whatever resources it was using.
+
+Acked-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20211215095117.176435-2-maxime@cerno.tech
+---
+ include/soc/bcm2835/raspberrypi-firmware.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -91,6 +91,7 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_GET_POE_HAT_VAL =                        0x00030049,
+ 	RPI_FIRMWARE_SET_POE_HAT_VAL =                        0x00030050,
+ 	RPI_FIRMWARE_NOTIFY_XHCI_RESET =                      0x00030058,
++	RPI_FIRMWARE_NOTIFY_DISPLAY_DONE =                    0x00030066,
+ 
+ 	/* Dispmanx TAGS */
+ 	RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE =                   0x00040001,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0023-drm-vc4-Remove-conflicting-framebuffers-before-calli.patch b/target/linux/bcm27xx/patches-5.15/950-0023-drm-vc4-Remove-conflicting-framebuffers-before-calli.patch
new file mode 100644
index 0000000000..0feaacbc67
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0023-drm-vc4-Remove-conflicting-framebuffers-before-calli.patch
@@ -0,0 +1,39 @@
+From c8f54918eece907f904d160815603bfcee0cfa1e Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 15 Dec 2021 10:51:16 +0100
+Subject: [PATCH] drm/vc4: Remove conflicting framebuffers before
+ callind bind_all
+
+The bind hooks will modify their controller registers, so simplefb is
+going to be unusable anyway. Let's avoid any transient state where it
+could still be in the system but no longer functionnal.
+
+Acked-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20211215095117.176435-4-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -253,15 +253,15 @@ static int vc4_drm_bind(struct device *d
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = component_bind_all(dev, drm);
++	ret = drm_aperture_remove_framebuffers(false, &vc4_drm_driver);
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = vc4_plane_create_additional_planes(drm);
++	ret = component_bind_all(dev, drm);
+ 	if (ret)
+-		goto unbind_all;
++		return ret;
+ 
+-	ret = drm_aperture_remove_framebuffers(false, &vc4_drm_driver);
++	ret = vc4_plane_create_additional_planes(drm);
+ 	if (ret)
+ 		goto unbind_all;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0024-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch b/target/linux/bcm27xx/patches-5.15/950-0024-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch
new file mode 100644
index 0000000000..04db8fb1d5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0024-drm-vc4-Notify-the-firmware-when-DRM-is-in-charge.patch
@@ -0,0 +1,69 @@
+From 9e9177db83609c19bbe523cc4d20119cf09ea787 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 15 Dec 2021 10:51:17 +0100
+Subject: [PATCH] drm/vc4: Notify the firmware when DRM is in charge
+
+Once the call to drm_fb_helper_remove_conflicting_framebuffers() has
+been made, simplefb has been unregistered and the KMS driver is entirely
+in charge of the display.
+
+Thus, we can notify the firmware it can free whatever resource it was
+using to maintain simplefb functional.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Link: https://patchwork.freedesktop.org/patch/msgid/20211215095117.176435-5-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 22 ++++++++++++++++++++++
+ 1 file changed, 22 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -37,6 +37,8 @@
+ #include <drm/drm_fb_helper.h>
+ #include <drm/drm_vblank.h>
+ 
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
+ #include "uapi/drm/vc4_drm.h"
+ 
+ #include "vc4_drv.h"
+@@ -217,6 +219,7 @@ static void vc4_match_add_drivers(struct
+ static int vc4_drm_bind(struct device *dev)
+ {
+ 	struct platform_device *pdev = to_platform_device(dev);
++	struct rpi_firmware *firmware = NULL;
+ 	struct drm_device *drm;
+ 	struct vc4_dev *vc4;
+ 	struct device_node *node;
+@@ -253,10 +256,29 @@ static int vc4_drm_bind(struct device *d
+ 	if (ret)
+ 		return ret;
+ 
++	node = of_find_compatible_node(NULL, NULL, "raspberrypi,bcm2835-firmware");
++	if (node) {
++		firmware = rpi_firmware_get(node);
++		of_node_put(node);
++
++		if (!firmware)
++			return -EPROBE_DEFER;
++	}
++
+ 	ret = drm_aperture_remove_framebuffers(false, &vc4_drm_driver);
+ 	if (ret)
+ 		return ret;
+ 
++	if (firmware) {
++		ret = rpi_firmware_property(firmware,
++					    RPI_FIRMWARE_NOTIFY_DISPLAY_DONE,
++					    NULL, 0);
++		if (ret)
++			drm_warn(drm, "Couldn't stop firmware display driver: %d\n", ret);
++
++		rpi_firmware_put(firmware);
++	}
++
+ 	ret = component_bind_all(dev, drm);
+ 	if (ret)
+ 		return ret;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0025-arm-partially-revert-702b94bff3c50542a6e4ab9a4f4cef0.patch b/target/linux/bcm27xx/patches-5.15/950-0025-arm-partially-revert-702b94bff3c50542a6e4ab9a4f4cef0.patch
new file mode 100644
index 0000000000..72ad567389
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0025-arm-partially-revert-702b94bff3c50542a6e4ab9a4f4cef0.patch
@@ -0,0 +1,99 @@
+From 08a1fec2fe9884288efd30ca814ae51fe84f842b Mon Sep 17 00:00:00 2001
+From: Dan Pasanen <dan.pasanen@gmail.com>
+Date: Thu, 21 Sep 2017 09:55:42 -0500
+Subject: [PATCH] arm: partially revert
+ 702b94bff3c50542a6e4ab9a4f4cef093262fe65
+
+* Re-expose some dmi APIs for use in VCSM
+---
+ arch/arm/include/asm/cacheflush.h | 21 +++++++++++++++++++++
+ arch/arm/include/asm/glue-cache.h |  2 ++
+ arch/arm/mm/proc-macros.S         |  2 ++
+ arch/arm/mm/proc-syms.c           |  3 +++
+ 4 files changed, 28 insertions(+)
+
+--- a/arch/arm/include/asm/cacheflush.h
++++ b/arch/arm/include/asm/cacheflush.h
+@@ -91,6 +91,21 @@
+  *	DMA Cache Coherency
+  *	===================
+  *
++ *	dma_inv_range(start, end)
++ *
++ *		Invalidate (discard) the specified virtual address range.
++ *		May not write back any entries.  If 'start' or 'end'
++ *		are not cache line aligned, those lines must be written
++ *		back.
++ *		- start  - virtual start address
++ *		- end    - virtual end address
++ *
++ *	dma_clean_range(start, end)
++ *
++ *		Clean (write back) the specified virtual address range.
++ *		- start  - virtual start address
++ *		- end    - virtual end address
++ *
+  *	dma_flush_range(start, end)
+  *
+  *		Clean and invalidate the specified virtual address range.
+@@ -112,6 +127,8 @@ struct cpu_cache_fns {
+ 	void (*dma_map_area)(const void *, size_t, int);
+ 	void (*dma_unmap_area)(const void *, size_t, int);
+ 
++	void (*dma_inv_range)(const void *, const void *);
++	void (*dma_clean_range)(const void *, const void *);
+ 	void (*dma_flush_range)(const void *, const void *);
+ } __no_randomize_layout;
+ 
+@@ -137,6 +154,8 @@ extern struct cpu_cache_fns cpu_cache;
+  * is visible to DMA, or data written by DMA to system memory is
+  * visible to the CPU.
+  */
++#define dmac_inv_range			cpu_cache.dma_inv_range
++#define dmac_clean_range		cpu_cache.dma_clean_range
+ #define dmac_flush_range		cpu_cache.dma_flush_range
+ 
+ #else
+@@ -156,6 +175,8 @@ extern void __cpuc_flush_dcache_area(voi
+  * is visible to DMA, or data written by DMA to system memory is
+  * visible to the CPU.
+  */
++extern void dmac_inv_range(const void *, const void *);
++extern void dmac_clean_range(const void *, const void *);
+ extern void dmac_flush_range(const void *, const void *);
+ 
+ #endif
+--- a/arch/arm/include/asm/glue-cache.h
++++ b/arch/arm/include/asm/glue-cache.h
+@@ -155,6 +155,8 @@ static inline void nop_dma_unmap_area(co
+ #define __cpuc_coherent_user_range	__glue(_CACHE,_coherent_user_range)
+ #define __cpuc_flush_dcache_area	__glue(_CACHE,_flush_kern_dcache_area)
+ 
++#define dmac_inv_range			__glue(_CACHE,_dma_inv_range)
++#define dmac_clean_range		__glue(_CACHE,_dma_clean_range)
+ #define dmac_flush_range		__glue(_CACHE,_dma_flush_range)
+ #endif
+ 
+--- a/arch/arm/mm/proc-macros.S
++++ b/arch/arm/mm/proc-macros.S
+@@ -334,6 +334,8 @@ ENTRY(\name\()_cache_fns)
+ 	.long	\name\()_flush_kern_dcache_area
+ 	.long	\name\()_dma_map_area
+ 	.long	\name\()_dma_unmap_area
++	.long	\name\()_dma_inv_range
++	.long	\name\()_dma_clean_range
+ 	.long	\name\()_dma_flush_range
+ 	.size	\name\()_cache_fns, . - \name\()_cache_fns
+ .endm
+--- a/arch/arm/mm/proc-syms.c
++++ b/arch/arm/mm/proc-syms.c
+@@ -27,6 +27,9 @@ EXPORT_SYMBOL(__cpuc_flush_user_all);
+ EXPORT_SYMBOL(__cpuc_flush_user_range);
+ EXPORT_SYMBOL(__cpuc_coherent_kern_range);
+ EXPORT_SYMBOL(__cpuc_flush_dcache_area);
++EXPORT_SYMBOL(dmac_inv_range);
++EXPORT_SYMBOL(dmac_clean_range);
++EXPORT_SYMBOL(dmac_flush_range);
+ #else
+ EXPORT_SYMBOL(cpu_cache);
+ #endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0026-Revert-rtc-pcf8523-properly-handle-oscillator-stop-b.patch b/target/linux/bcm27xx/patches-5.15/950-0026-Revert-rtc-pcf8523-properly-handle-oscillator-stop-b.patch
new file mode 100644
index 0000000000..32a58221d0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0026-Revert-rtc-pcf8523-properly-handle-oscillator-stop-b.patch
@@ -0,0 +1,48 @@
+From 39869587dac09c9e738960ccdf01e1dc62a906f7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 29 Oct 2018 14:45:45 +0000
+Subject: [PATCH] Revert "rtc: pcf8523: properly handle oscillator stop
+ bit"
+
+This reverts commit ede44c908d44b166a5b6bd7caacd105c2ff5a70f.
+
+See: https://github.com/raspberrypi/firmware/issues/1065
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/rtc/rtc-pcf8523.c | 24 ++++++++++++++++++++++--
+ 1 file changed, 22 insertions(+), 2 deletions(-)
+
+--- a/drivers/rtc/rtc-pcf8523.c
++++ b/drivers/rtc/rtc-pcf8523.c
+@@ -242,8 +242,28 @@ static int pcf8523_rtc_read_time(struct
+ 	if (err < 0)
+ 		return err;
+ 
+-	if (regs[0] & PCF8523_SECONDS_OS)
+-		return -EINVAL;
++	if (regs[0] & PCF8523_SECONDS_OS) {
++		/*
++		 * If the oscillator was stopped, try to clear the flag. Upon
++		 * power-up the flag is always set, but if we cannot clear it
++		 * the oscillator isn't running properly for some reason. The
++		 * sensible thing therefore is to return an error, signalling
++		 * that the clock cannot be assumed to be correct.
++		 */
++
++		regs[0] &= ~PCF8523_SECONDS_OS;
++
++		err = pcf8523_write(client, PCF8523_REG_SECONDS, regs[0]);
++		if (err < 0)
++			return err;
++
++		err = pcf8523_read(client, PCF8523_REG_SECONDS, &regs[0]);
++		if (err < 0)
++			return err;
++
++		if (regs[0] & PCF8523_SECONDS_OS)
++			return -EAGAIN;
++	}
+ 
+ 	tm->tm_sec = bcd2bin(regs[0] & 0x7f);
+ 	tm->tm_min = bcd2bin(regs[1] & 0x7f);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0027-Revert-staging-bcm2835-audio-Drop-DT-dependency.patch b/target/linux/bcm27xx/patches-5.15/950-0027-Revert-staging-bcm2835-audio-Drop-DT-dependency.patch
new file mode 100644
index 0000000000..579e6d5e0d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0027-Revert-staging-bcm2835-audio-Drop-DT-dependency.patch
@@ -0,0 +1,96 @@
+From 85c2420c3b800f5ec030b28f19b2a77022173a9b Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Fri, 15 Mar 2019 21:11:10 +0000
+Subject: [PATCH] Revert "staging: bcm2835-audio: Drop DT dependency"
+
+This reverts commit b7491a9fca2dc2535b9dc922550a37c5baae9d3d.
+---
+ .../vc04_services/bcm2835-audio/bcm2835.c     | 31 +++++++++++++------
+ 1 file changed, 22 insertions(+), 9 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -6,13 +6,13 @@
+ #include <linux/init.h>
+ #include <linux/slab.h>
+ #include <linux/module.h>
++#include <linux/of.h>
+ 
+ #include "bcm2835.h"
+ 
+ static bool enable_hdmi;
+ static bool enable_headphones;
+ static bool enable_compat_alsa = true;
+-static int num_channels = MAX_SUBSTREAMS;
+ 
+ module_param(enable_hdmi, bool, 0444);
+ MODULE_PARM_DESC(enable_hdmi, "Enables HDMI virtual audio device");
+@@ -21,8 +21,6 @@ MODULE_PARM_DESC(enable_headphones, "Ena
+ module_param(enable_compat_alsa, bool, 0444);
+ MODULE_PARM_DESC(enable_compat_alsa,
+ 		 "Enables ALSA compatibility virtual audio device");
+-module_param(num_channels, int, 0644);
+-MODULE_PARM_DESC(num_channels, "Number of audio channels (default: 8)");
+ 
+ static void bcm2835_devm_free_vchi_ctx(struct device *dev, void *res)
+ {
+@@ -296,19 +294,28 @@ static int snd_add_child_devices(struct
+ static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
++	u32 numchans;
+ 	int err;
+ 
+-	if (num_channels <= 0 || num_channels > MAX_SUBSTREAMS) {
+-		num_channels = MAX_SUBSTREAMS;
+-		dev_warn(dev, "Illegal num_channels value, will use %u\n",
+-			 num_channels);
++	err = of_property_read_u32(dev->of_node, "brcm,pwm-channels",
++				   &numchans);
++	if (err) {
++		dev_err(dev, "Failed to get DT property 'brcm,pwm-channels'");
++		return err;
++	}
++
++	if (numchans == 0 || numchans > MAX_SUBSTREAMS) {
++		numchans = MAX_SUBSTREAMS;
++		dev_warn(dev,
++			 "Illegal 'brcm,pwm-channels' value, will use %u\n",
++			 numchans);
+ 	}
+ 
+ 	err = bcm2835_devm_add_vchi_ctx(dev);
+ 	if (err)
+ 		return err;
+ 
+-	err = snd_add_child_devices(dev, num_channels);
++	err = snd_add_child_devices(dev, numchans);
+ 	if (err)
+ 		return err;
+ 
+@@ -330,6 +337,12 @@ static int snd_bcm2835_alsa_resume(struc
+ 
+ #endif
+ 
++static const struct of_device_id snd_bcm2835_of_match_table[] = {
++	{ .compatible = "brcm,bcm2835-audio",},
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table);
++
+ static struct platform_driver bcm2835_alsa_driver = {
+ 	.probe = snd_bcm2835_alsa_probe,
+ #ifdef CONFIG_PM
+@@ -338,6 +351,7 @@ static struct platform_driver bcm2835_al
+ #endif
+ 	.driver = {
+ 		.name = "bcm2835_audio",
++		.of_match_table = snd_bcm2835_of_match_table,
+ 	},
+ };
+ module_platform_driver(bcm2835_alsa_driver);
+@@ -345,4 +359,3 @@ module_platform_driver(bcm2835_alsa_driv
+ MODULE_AUTHOR("Dom Cobley");
+ MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
+ MODULE_LICENSE("GPL");
+-MODULE_ALIAS("platform:bcm2835_audio");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0028-Revert-spi-spidev-Fix-CS-polarity-if-GPIO-descriptor.patch b/target/linux/bcm27xx/patches-5.15/950-0028-Revert-spi-spidev-Fix-CS-polarity-if-GPIO-descriptor.patch
new file mode 100644
index 0000000000..c66bb9d621
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0028-Revert-spi-spidev-Fix-CS-polarity-if-GPIO-descriptor.patch
@@ -0,0 +1,32 @@
+From 7b6b90b399056144655b7651e44c46466044709b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 20 Apr 2020 13:41:10 +0100
+Subject: [PATCH] Revert "spi: spidev: Fix CS polarity if GPIO
+ descriptors are used"
+
+This reverts commit 83b2a8fe43bda0c11981ad6afa5dd0104d78be28.
+---
+ drivers/spi/spidev.c | 5 -----
+ 1 file changed, 5 deletions(-)
+
+--- a/drivers/spi/spidev.c
++++ b/drivers/spi/spidev.c
+@@ -402,7 +402,6 @@ spidev_ioctl(struct file *filp, unsigned
+ 		else
+ 			retval = get_user(tmp, (u32 __user *)arg);
+ 		if (retval == 0) {
+-			struct spi_controller *ctlr = spi->controller;
+ 			u32	save = spi->mode;
+ 
+ 			if (tmp & ~SPI_MODE_MASK) {
+@@ -410,10 +409,6 @@ spidev_ioctl(struct file *filp, unsigned
+ 				break;
+ 			}
+ 
+-			if (ctlr->use_gpio_descriptors && ctlr->cs_gpiods &&
+-			    ctlr->cs_gpiods[spi->chip_select])
+-				tmp |= SPI_CS_HIGH;
+-
+ 			tmp |= spi->mode & ~SPI_MODE_MASK;
+ 			spi->mode = (u16)tmp;
+ 			retval = spi_setup(spi);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0029-Revert-mailbox-avoid-timer-start-from-callback.patch b/target/linux/bcm27xx/patches-5.15/950-0029-Revert-mailbox-avoid-timer-start-from-callback.patch
new file mode 100644
index 0000000000..cd121d02c5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0029-Revert-mailbox-avoid-timer-start-from-callback.patch
@@ -0,0 +1,58 @@
+From fe19823f6053fe91a671fdbf92ab93b517a25219 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 3 Nov 2020 11:49:53 +0000
+Subject: [PATCH] Revert "mailbox: avoid timer start from callback"
+
+This reverts commit c7dacf5b0f32957b24ef29df1207dc2cd8307743.
+
+The Pi 400 shutdown/poweroff mechanism relies on being able to set
+a GPIO on the expander in the pm_power_off handler, something that
+requires two mailbox calls - GET_GPIO_STATE and SET_GPIO_STATE. A
+recent kernel change introduces a reasonable possibility that the
+GET call doesn't completes, and bisecting led to a commit from
+October that changes the timer usage of the mailbox.
+
+My theory is that there is a race condition in the new code that breaks
+the poll timer, but that it normally goes unnoticed because subsequent
+mailbox activity wakes it up again. The power-off mailbox calls happen
+at a time when other subsystems have been shut down, so if one of them
+fails then there is nothing to allow it to recover.
+
+See: https://github.com/raspberrypi/linux/issues/3941
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/mailbox/mailbox.c | 12 +++++-------
+ 1 file changed, 5 insertions(+), 7 deletions(-)
+
+--- a/drivers/mailbox/mailbox.c
++++ b/drivers/mailbox/mailbox.c
+@@ -82,12 +82,9 @@ static void msg_submit(struct mbox_chan
+ exit:
+ 	spin_unlock_irqrestore(&chan->lock, flags);
+ 
+-	/* kick start the timer immediately to avoid delays */
+-	if (!err && (chan->txdone_method & TXDONE_BY_POLL)) {
+-		/* but only if not already active */
+-		if (!hrtimer_active(&chan->mbox->poll_hrt))
+-			hrtimer_start(&chan->mbox->poll_hrt, 0, HRTIMER_MODE_REL);
+-	}
++	if (!err && (chan->txdone_method & TXDONE_BY_POLL))
++		/* kick start the timer immediately to avoid delays */
++		hrtimer_start(&chan->mbox->poll_hrt, 0, HRTIMER_MODE_REL);
+ }
+ 
+ static void tx_tick(struct mbox_chan *chan, int r)
+@@ -125,10 +122,11 @@ static enum hrtimer_restart txdone_hrtim
+ 		struct mbox_chan *chan = &mbox->chans[i];
+ 
+ 		if (chan->active_req && chan->cl) {
+-			resched = true;
+ 			txdone = chan->mbox->ops->last_tx_done(chan);
+ 			if (txdone)
+ 				tx_tick(chan, 0);
++			else
++				resched = true;
+ 		}
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0030-Revert-Bluetooth-Always-request-for-user-confirmatio.patch b/target/linux/bcm27xx/patches-5.15/950-0030-Revert-Bluetooth-Always-request-for-user-confirmatio.patch
new file mode 100644
index 0000000000..9541eb149f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0030-Revert-Bluetooth-Always-request-for-user-confirmatio.patch
@@ -0,0 +1,45 @@
+From b99d91f044ff9360ac03ce7d27eb6aead6cd2d42 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 1 Mar 2021 09:12:44 +0000
+Subject: [PATCH] Revert "Bluetooth: Always request for user
+ confirmation for Just Works (LE SC)"
+
+This reverts commit ffee202a78c2980688bc5d2f7d56480e69a5e0c9.
+
+The commit "Bluetooth: Always request for user confirmation for Just
+Works" prevents BLE devices pairing in (at least) the Raspberry Pi OS
+GUI. After reverting it, pairing works again. Although this companion
+commit ("... (LE SC)") has not been demonstrated to be problematic,
+it follows the same logic and therefore could affect some use cases.
+
+If another solution to the problem is found then this reversion will
+be removed.
+
+See: https://github.com/raspberrypi/linux/issues/4139
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ net/bluetooth/smp.c | 5 +----
+ 1 file changed, 1 insertion(+), 4 deletions(-)
+
+--- a/net/bluetooth/smp.c
++++ b/net/bluetooth/smp.c
+@@ -2207,7 +2207,7 @@ mackey_and_ltk:
+ 	if (err)
+ 		return SMP_UNSPECIFIED;
+ 
+-	if (smp->method == REQ_OOB) {
++	if (smp->method == JUST_WORKS || smp->method == REQ_OOB) {
+ 		if (hcon->out) {
+ 			sc_dhkey_check(smp);
+ 			SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK);
+@@ -2222,9 +2222,6 @@ mackey_and_ltk:
+ 	confirm_hint = 0;
+ 
+ confirm:
+-	if (smp->method == JUST_WORKS)
+-		confirm_hint = 1;
+-
+ 	err = mgmt_user_confirm_request(hcon->hdev, &hcon->dst, hcon->type,
+ 					hcon->dst_type, passkey, confirm_hint);
+ 	if (err)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0031-Revert-Bluetooth-Always-request-for-user-confirmatio.patch b/target/linux/bcm27xx/patches-5.15/950-0031-Revert-Bluetooth-Always-request-for-user-confirmatio.patch
new file mode 100644
index 0000000000..cfa67bb337
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0031-Revert-Bluetooth-Always-request-for-user-confirmatio.patch
@@ -0,0 +1,43 @@
+From 0d96dec62add659cc6189c629b465a903a1ff235 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 1 Mar 2021 09:14:35 +0000
+Subject: [PATCH] Revert "Bluetooth: Always request for user
+ confirmation for Just Works"
+
+This reverts commit 92516cd97fd4d8ad5b1421a0d51771044f453a5f.
+
+Thi commit "Bluetooth: Always request for user confirmation for Just
+Works" prevents BLE devices pairing in (at least) the Raspberry Pi OS
+GUI. After reverting it, pairing works again.
+
+If another solution to the problem is found then this reversion will
+be removed.
+
+See: https://github.com/raspberrypi/linux/issues/4139
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ net/bluetooth/smp.c | 11 ++---------
+ 1 file changed, 2 insertions(+), 9 deletions(-)
+
+--- a/net/bluetooth/smp.c
++++ b/net/bluetooth/smp.c
+@@ -883,16 +883,9 @@ static int tk_request(struct l2cap_conn
+ 	    hcon->io_capability == HCI_IO_NO_INPUT_OUTPUT)
+ 		smp->method = JUST_WORKS;
+ 
+-	/* If Just Works, Continue with Zero TK and ask user-space for
+-	 * confirmation */
++	/* If Just Works, Continue with Zero TK */
+ 	if (smp->method == JUST_WORKS) {
+-		ret = mgmt_user_confirm_request(hcon->hdev, &hcon->dst,
+-						hcon->type,
+-						hcon->dst_type,
+-						passkey, 1);
+-		if (ret)
+-			return ret;
+-		set_bit(SMP_FLAG_WAIT_USER, &smp->flags);
++		set_bit(SMP_FLAG_TK_VALID, &smp->flags);
+ 		return 0;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0032-smsx95xx-fix-crimes-against-truesize.patch b/target/linux/bcm27xx/patches-5.15/950-0032-smsx95xx-fix-crimes-against-truesize.patch
new file mode 100644
index 0000000000..a6b99ae08e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0032-smsx95xx-fix-crimes-against-truesize.patch
@@ -0,0 +1,47 @@
+From bcfe73a54afc6871e3dc16f6ca2c626f21fd4e8d Mon Sep 17 00:00:00 2001
+From: Steve Glendinning <steve.glendinning@smsc.com>
+Date: Thu, 19 Feb 2015 18:47:12 +0000
+Subject: [PATCH] smsx95xx: fix crimes against truesize
+
+smsc95xx is adjusting truesize when it shouldn't, and following a recent patch from Eric this is now triggering warnings.
+
+This patch stops smsc95xx from changing truesize.
+
+Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
+---
+ drivers/net/usb/smsc95xx.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/usb/smsc95xx.c
++++ b/drivers/net/usb/smsc95xx.c
+@@ -67,6 +67,10 @@ static bool turbo_mode = true;
+ module_param(turbo_mode, bool, 0644);
+ MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
+ 
++static bool truesize_mode = false;
++module_param(truesize_mode, bool, 0644);
++MODULE_PARM_DESC(truesize_mode, "Report larger truesize value");
++
+ static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
+ 					    u32 *data, int in_pm)
+ {
+@@ -1839,7 +1843,8 @@ static int smsc95xx_rx_fixup(struct usbn
+ 				if (dev->net->features & NETIF_F_RXCSUM)
+ 					smsc95xx_rx_csum_offload(skb);
+ 				skb_trim(skb, skb->len - 4); /* remove fcs */
+-				skb->truesize = size + sizeof(struct sk_buff);
++				if (truesize_mode)
++					skb->truesize = size + sizeof(struct sk_buff);
+ 
+ 				return 1;
+ 			}
+@@ -1857,7 +1862,8 @@ static int smsc95xx_rx_fixup(struct usbn
+ 			if (dev->net->features & NETIF_F_RXCSUM)
+ 				smsc95xx_rx_csum_offload(ax_skb);
+ 			skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
+-			ax_skb->truesize = size + sizeof(struct sk_buff);
++			if (truesize_mode)
++				ax_skb->truesize = size + sizeof(struct sk_buff);
+ 
+ 			usbnet_skb_return(dev, ax_skb);
+ 		}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0033-smsc95xx-Experimental-Enable-turbo_mode-and-packetsi.patch b/target/linux/bcm27xx/patches-5.15/950-0033-smsc95xx-Experimental-Enable-turbo_mode-and-packetsi.patch
new file mode 100644
index 0000000000..52f76c12f8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0033-smsc95xx-Experimental-Enable-turbo_mode-and-packetsi.patch
@@ -0,0 +1,43 @@
+From 215752d596024ea482174b8fdf81d262a1f6c042 Mon Sep 17 00:00:00 2001
+From: Sam Nazarko <email@samnazarko.co.uk>
+Date: Fri, 1 Apr 2016 17:27:21 +0100
+Subject: [PATCH] smsc95xx: Experimental: Enable turbo_mode and
+ packetsize=2560 by default
+
+See: http://forum.kodi.tv/showthread.php?tid=285288
+---
+ drivers/net/usb/smsc95xx.c | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+--- a/drivers/net/usb/smsc95xx.c
++++ b/drivers/net/usb/smsc95xx.c
+@@ -71,6 +71,10 @@ static bool truesize_mode = false;
+ module_param(truesize_mode, bool, 0644);
+ MODULE_PARM_DESC(truesize_mode, "Report larger truesize value");
+ 
++static int packetsize = 2560;
++module_param(packetsize, int, 0644);
++MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
++
+ static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
+ 					    u32 *data, int in_pm)
+ {
+@@ -917,13 +921,13 @@ static int smsc95xx_reset(struct usbnet
+ 
+ 	if (!turbo_mode) {
+ 		burst_cap = 0;
+-		dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
++		dev->rx_urb_size = packetsize ? packetsize : MAX_SINGLE_PACKET_SIZE;
+ 	} else if (dev->udev->speed == USB_SPEED_HIGH) {
+-		burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
+-		dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
++		dev->rx_urb_size = packetsize ? packetsize : DEFAULT_HS_BURST_CAP_SIZE;
++		burst_cap = dev->rx_urb_size / HS_USB_PKT_SIZE;
+ 	} else {
+-		burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
+-		dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
++		dev->rx_urb_size = packetsize ? packetsize : DEFAULT_FS_BURST_CAP_SIZE;
++		burst_cap = dev->rx_urb_size / FS_USB_PKT_SIZE;
+ 	}
+ 
+ 	netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0034-Allow-mac-address-to-be-set-in-smsc95xx.patch b/target/linux/bcm27xx/patches-5.15/950-0034-Allow-mac-address-to-be-set-in-smsc95xx.patch
new file mode 100644
index 0000000000..e818e6c4ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0034-Allow-mac-address-to-be-set-in-smsc95xx.patch
@@ -0,0 +1,96 @@
+From f64d2300793a37b0c574bffce0590a1b2bee234d Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 26 Mar 2013 17:26:38 +0000
+Subject: [PATCH] Allow mac address to be set in smsc95xx
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/net/usb/smsc95xx.c | 56 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 56 insertions(+)
+
+--- a/drivers/net/usb/smsc95xx.c
++++ b/drivers/net/usb/smsc95xx.c
+@@ -50,6 +50,7 @@
+ #define SUSPEND_SUSPEND3		(0x08)
+ #define SUSPEND_ALLMODES		(SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
+ 					 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
++#define MAC_ADDR_LEN                    (6)
+ 
+ struct smsc95xx_priv {
+ 	u32 mac_cr;
+@@ -75,6 +76,10 @@ static int packetsize = 2560;
+ module_param(packetsize, int, 0644);
+ MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
+ 
++static char *macaddr = ":";
++module_param(macaddr, charp, 0);
++MODULE_PARM_DESC(macaddr, "MAC address");
++
+ static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
+ 					    u32 *data, int in_pm)
+ {
+@@ -773,6 +778,53 @@ static int smsc95xx_ioctl(struct net_dev
+ 	return phy_mii_ioctl(netdev->phydev, rq, cmd);
+ }
+ 
++/* Check the macaddr module parameter for a MAC address */
++static int smsc95xx_is_macaddr_param(struct usbnet *dev, u8 *dev_mac)
++{
++       int i, j, got_num, num;
++       u8 mtbl[MAC_ADDR_LEN];
++
++       if (macaddr[0] == ':')
++               return 0;
++
++       i = 0;
++       j = 0;
++       num = 0;
++       got_num = 0;
++       while (j < MAC_ADDR_LEN) {
++               if (macaddr[i] && macaddr[i] != ':') {
++                       got_num++;
++                       if ('0' <= macaddr[i] && macaddr[i] <= '9')
++                               num = num * 16 + macaddr[i] - '0';
++                       else if ('A' <= macaddr[i] && macaddr[i] <= 'F')
++                               num = num * 16 + 10 + macaddr[i] - 'A';
++                       else if ('a' <= macaddr[i] && macaddr[i] <= 'f')
++                               num = num * 16 + 10 + macaddr[i] - 'a';
++                       else
++                               break;
++                       i++;
++               } else if (got_num == 2) {
++                       mtbl[j++] = (u8) num;
++                       num = 0;
++                       got_num = 0;
++                       i++;
++               } else {
++                       break;
++               }
++       }
++
++       if (j == MAC_ADDR_LEN) {
++               netif_dbg(dev, ifup, dev->net, "Overriding MAC address with: "
++               "%02x:%02x:%02x:%02x:%02x:%02x\n", mtbl[0], mtbl[1], mtbl[2],
++                                               mtbl[3], mtbl[4], mtbl[5]);
++               for (i = 0; i < MAC_ADDR_LEN; i++)
++                       dev_mac[i] = mtbl[i];
++               return 1;
++       } else {
++               return 0;
++       }
++}
++
+ static void smsc95xx_init_mac_address(struct usbnet *dev)
+ {
+ 	/* maybe the boot loader passed the MAC address in devicetree */
+@@ -795,6 +847,10 @@ static void smsc95xx_init_mac_address(st
+ 		}
+ 	}
+ 
++	/* Check module parameters */
++	if (smsc95xx_is_macaddr_param(dev, dev->net->dev_addr))
++		return;
++
+ 	/* no useful static MAC address found. generate a random one */
+ 	eth_hw_addr_random(dev->net);
+ 	netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0035-cgroup-Disable-cgroup-memory-by-default.patch b/target/linux/bcm27xx/patches-5.15/950-0035-cgroup-Disable-cgroup-memory-by-default.patch
new file mode 100644
index 0000000000..6ea14aba94
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0035-cgroup-Disable-cgroup-memory-by-default.patch
@@ -0,0 +1,85 @@
+From e2494e8c48c510ccefc889393f5d776b5e3824ac Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 27 Nov 2017 17:14:54 +0000
+Subject: [PATCH] cgroup: Disable cgroup "memory" by default
+
+Some Raspberry Pis have limited RAM and most users won't use the
+cgroup memory support so it is disabled by default. Enable with:
+
+    cgroup_enable=memory
+
+See: https://github.com/raspberrypi/linux/issues/1950
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ kernel/cgroup/cgroup.c | 38 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 38 insertions(+)
+
+--- a/kernel/cgroup/cgroup.c
++++ b/kernel/cgroup/cgroup.c
+@@ -5824,6 +5824,9 @@ int __init cgroup_init_early(void)
+ 	return 0;
+ }
+ 
++static u16 cgroup_enable_mask __initdata;
++static int __init cgroup_disable(char *str);
++
+ /**
+  * cgroup_init - cgroup initialization
+  *
+@@ -5862,6 +5865,12 @@ int __init cgroup_init(void)
+ 
+ 	mutex_unlock(&cgroup_mutex);
+ 
++	/*
++	 * Apply an implicit disable, knowing that an explicit enable will
++	 * prevent if from doing anything.
++	 */
++	cgroup_disable("memory");
++
+ 	for_each_subsys(ss, ssid) {
+ 		if (ss->early_init) {
+ 			struct cgroup_subsys_state *css =
+@@ -6446,6 +6455,10 @@ static int __init cgroup_disable(char *s
+ 			    strcmp(token, ss->legacy_name))
+ 				continue;
+ 
++			/* An explicit cgroup_enable overrides a disable */
++			if (cgroup_enable_mask & (1 << i))
++				continue;
++
+ 			static_branch_disable(cgroup_subsys_enabled_key[i]);
+ 			pr_info("Disabling %s control group subsystem\n",
+ 				ss->name);
+@@ -6464,6 +6477,31 @@ static int __init cgroup_disable(char *s
+ }
+ __setup("cgroup_disable=", cgroup_disable);
+ 
++static int __init cgroup_enable(char *str)
++{
++	struct cgroup_subsys *ss;
++	char *token;
++	int i;
++
++	while ((token = strsep(&str, ",")) != NULL) {
++		if (!*token)
++			continue;
++
++		for_each_subsys(ss, i) {
++			if (strcmp(token, ss->name) &&
++			    strcmp(token, ss->legacy_name))
++				continue;
++
++			cgroup_enable_mask |= 1 << i;
++			static_branch_enable(cgroup_subsys_enabled_key[i]);
++			pr_info("Enabling %s control group subsystem\n",
++				ss->name);
++		}
++	}
++	return 1;
++}
++__setup("cgroup_enable=", cgroup_enable);
++
+ void __init __weak enable_debug_cgroup(void) { }
+ 
+ static int __init enable_cgroup_debug(char *str)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0036-Protect-__release_resource-against-resources-without.patch b/target/linux/bcm27xx/patches-5.15/950-0036-Protect-__release_resource-against-resources-without.patch
new file mode 100644
index 0000000000..b20b9fc3b1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0036-Protect-__release_resource-against-resources-without.patch
@@ -0,0 +1,28 @@
+From f9942b250bfba575a49314f30af77c27cd87e48b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 13 Mar 2015 12:43:36 +0000
+Subject: [PATCH] Protect __release_resource against resources without
+ parents
+
+Without this patch, removing a device tree overlay can crash here.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ kernel/resource.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/kernel/resource.c
++++ b/kernel/resource.c
+@@ -188,6 +188,12 @@ static int __release_resource(struct res
+ {
+ 	struct resource *tmp, **p, *chd;
+ 
++	if (!old->parent) {
++		WARN(old->sibling, "sibling but no parent");
++		if (old->sibling)
++			return -EINVAL;
++		return 0;
++	}
+ 	p = &old->parent->child;
+ 	for (;;) {
+ 		tmp = *p;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0037-irq-bcm2836-Avoid-Invalid-trigger-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0037-irq-bcm2836-Avoid-Invalid-trigger-warning.patch
new file mode 100644
index 0000000000..2a1bc5e26e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0037-irq-bcm2836-Avoid-Invalid-trigger-warning.patch
@@ -0,0 +1,24 @@
+From 9105d6383f0c340833b6b2cbf6218879017b95d2 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 9 Feb 2017 14:33:30 +0000
+Subject: [PATCH] irq-bcm2836: Avoid "Invalid trigger warning"
+
+Initialise the level for each IRQ to avoid a warning from the
+arm arch timer code.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/irqchip/irq-bcm2836.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/irqchip/irq-bcm2836.c
++++ b/drivers/irqchip/irq-bcm2836.c
+@@ -128,7 +128,7 @@ static int bcm2836_map(struct irq_domain
+ 	irq_set_percpu_devid(irq);
+ 	irq_domain_set_info(d, irq, hw, chip, d->host_data,
+ 			    handle_percpu_devid_irq, NULL, NULL);
+-	irq_set_status_flags(irq, IRQ_NOAUTOEN);
++	irq_set_status_flags(irq, IRQ_NOAUTOEN | IRQ_TYPE_LEVEL_LOW);
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0038-irqchip-bcm2835-Add-FIQ-support.patch b/target/linux/bcm27xx/patches-5.15/950-0038-irqchip-bcm2835-Add-FIQ-support.patch
new file mode 100644
index 0000000000..1ee146756c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0038-irqchip-bcm2835-Add-FIQ-support.patch
@@ -0,0 +1,127 @@
+From 247b39081d1219b7052962e6e835491f0c031f25 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Fri, 12 Jun 2015 19:01:05 +0200
+Subject: [PATCH] irqchip: bcm2835: Add FIQ support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add a duplicate irq range with an offset on the hwirq's so the
+driver can detect that enable_fiq() is used.
+Tested with downstream dwc_otg USB controller driver.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+Reviewed-by: Eric Anholt <eric@anholt.net>
+Acked-by: Stephen Warren <swarren@wwwdotorg.org>
+---
+ arch/arm/mach-bcm/Kconfig     |  1 +
+ drivers/irqchip/irq-bcm2835.c | 51 +++++++++++++++++++++++++++++++----
+ 2 files changed, 47 insertions(+), 5 deletions(-)
+
+--- a/arch/arm/mach-bcm/Kconfig
++++ b/arch/arm/mach-bcm/Kconfig
+@@ -162,6 +162,7 @@ config ARCH_BCM2835
+ 	select HAVE_ARM_ARCH_TIMER if ARCH_MULTI_V7
+ 	select BCM2835_TIMER
+ 	select BRCMSTB_L2_IRQ
++	select FIQ
+ 	select PINCTRL
+ 	select PINCTRL_BCM2835
+ 	select MFD_CORE
+--- a/drivers/irqchip/irq-bcm2835.c
++++ b/drivers/irqchip/irq-bcm2835.c
+@@ -45,7 +45,7 @@
+ #include <asm/exception.h>
+ 
+ /* Put the bank and irq (32 bits) into the hwirq */
+-#define MAKE_HWIRQ(b, n)	((b << 5) | (n))
++#define MAKE_HWIRQ(b, n)	(((b) << 5) | (n))
+ #define HWIRQ_BANK(i)		(i >> 5)
+ #define HWIRQ_BIT(i)		BIT(i & 0x1f)
+ 
+@@ -62,9 +62,13 @@
+ 
+ #define REG_FIQ_CONTROL		0x0c
+ #define FIQ_CONTROL_ENABLE	BIT(7)
++#define REG_FIQ_ENABLE		FIQ_CONTROL_ENABLE
++#define REG_FIQ_DISABLE	0
+ 
+ #define NR_BANKS		3
+ #define IRQS_PER_BANK		32
++#define NUMBER_IRQS		MAKE_HWIRQ(NR_BANKS, 0)
++#define FIQ_START		(NR_IRQS_BANK0 + MAKE_HWIRQ(NR_BANKS - 1, 0))
+ 
+ static const int reg_pending[] __initconst = { 0x00, 0x04, 0x08 };
+ static const int reg_enable[] __initconst = { 0x18, 0x10, 0x14 };
+@@ -89,14 +93,38 @@ static void __exception_irq_entry bcm283
+ 	struct pt_regs *regs);
+ static void bcm2836_chained_handle_irq(struct irq_desc *desc);
+ 
++static inline unsigned int hwirq_to_fiq(unsigned long hwirq)
++{
++	hwirq -= NUMBER_IRQS;
++	/*
++	 * The hwirq numbering used in this driver is:
++	 *   BASE (0-7) GPU1 (32-63) GPU2 (64-95).
++	 * This differ from the one used in the FIQ register:
++	 *   GPU1 (0-31) GPU2 (32-63) BASE (64-71)
++	 */
++	if (hwirq >= 32)
++		return hwirq - 32;
++
++	return hwirq + 64;
++}
++
+ static void armctrl_mask_irq(struct irq_data *d)
+ {
+-	writel_relaxed(HWIRQ_BIT(d->hwirq), intc.disable[HWIRQ_BANK(d->hwirq)]);
++	if (d->hwirq >= NUMBER_IRQS)
++		writel_relaxed(REG_FIQ_DISABLE, intc.base + REG_FIQ_CONTROL);
++	else
++		writel_relaxed(HWIRQ_BIT(d->hwirq),
++			       intc.disable[HWIRQ_BANK(d->hwirq)]);
+ }
+ 
+ static void armctrl_unmask_irq(struct irq_data *d)
+ {
+-	writel_relaxed(HWIRQ_BIT(d->hwirq), intc.enable[HWIRQ_BANK(d->hwirq)]);
++	if (d->hwirq >= NUMBER_IRQS)
++		writel_relaxed(REG_FIQ_ENABLE | hwirq_to_fiq(d->hwirq),
++			       intc.base + REG_FIQ_CONTROL);
++	else
++		writel_relaxed(HWIRQ_BIT(d->hwirq),
++			       intc.enable[HWIRQ_BANK(d->hwirq)]);
+ }
+ 
+ static struct irq_chip armctrl_chip = {
+@@ -142,8 +170,9 @@ static int __init armctrl_of_init(struct
+ 	if (!base)
+ 		panic("%pOF: unable to map IC registers\n", node);
+ 
+-	intc.domain = irq_domain_add_linear(node, MAKE_HWIRQ(NR_BANKS, 0),
+-			&armctrl_ops, NULL);
++	intc.base = base;
++	intc.domain = irq_domain_add_linear(node, NUMBER_IRQS * 2,
++					    &armctrl_ops, NULL);
+ 	if (!intc.domain)
+ 		panic("%pOF: unable to create IRQ domain\n", node);
+ 
+@@ -186,6 +215,18 @@ static int __init armctrl_of_init(struct
+ 		set_handle_irq(bcm2835_handle_irq);
+ 	}
+ 
++	/* Make a duplicate irq range which is used to enable FIQ */
++	for (b = 0; b < NR_BANKS; b++) {
++		for (i = 0; i < bank_irqs[b]; i++) {
++			irq = irq_create_mapping(intc.domain,
++					MAKE_HWIRQ(b, i) + NUMBER_IRQS);
++			BUG_ON(irq <= 0);
++			irq_set_chip(irq, &armctrl_chip);
++			set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
++		}
++	}
++	init_FIQ(FIQ_START);
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0039-irqchip-irq-bcm2835-Add-2836-FIQ-support.patch b/target/linux/bcm27xx/patches-5.15/950-0039-irqchip-irq-bcm2835-Add-2836-FIQ-support.patch
new file mode 100644
index 0000000000..c83d4de118
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0039-irqchip-irq-bcm2835-Add-2836-FIQ-support.patch
@@ -0,0 +1,99 @@
+From 2c0b90a0c4589ff5fc93c6d48e0462b53338e4ce Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Fri, 23 Oct 2015 16:26:55 +0200
+Subject: [PATCH] irqchip: irq-bcm2835: Add 2836 FIQ support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/irqchip/irq-bcm2835.c | 43 +++++++++++++++++++++++++++++++++--
+ 1 file changed, 41 insertions(+), 2 deletions(-)
+
+--- a/drivers/irqchip/irq-bcm2835.c
++++ b/drivers/irqchip/irq-bcm2835.c
+@@ -41,8 +41,11 @@
+ #include <linux/of_irq.h>
+ #include <linux/irqchip.h>
+ #include <linux/irqdomain.h>
++#include <linux/mfd/syscon.h>
++#include <linux/regmap.h>
+ 
+ #include <asm/exception.h>
++#include <asm/mach/irq.h>
+ 
+ /* Put the bank and irq (32 bits) into the hwirq */
+ #define MAKE_HWIRQ(b, n)	(((b) << 5) | (n))
+@@ -60,6 +63,9 @@
+ #define BANK0_VALID_MASK	(BANK0_HWIRQ_MASK | BANK1_HWIRQ | BANK2_HWIRQ \
+ 					| SHORTCUT1_MASK | SHORTCUT2_MASK)
+ 
++#undef ARM_LOCAL_GPU_INT_ROUTING
++#define ARM_LOCAL_GPU_INT_ROUTING 0x0c
++
+ #define REG_FIQ_CONTROL		0x0c
+ #define FIQ_CONTROL_ENABLE	BIT(7)
+ #define REG_FIQ_ENABLE		FIQ_CONTROL_ENABLE
+@@ -86,6 +92,7 @@ struct armctrl_ic {
+ 	void __iomem *enable[NR_BANKS];
+ 	void __iomem *disable[NR_BANKS];
+ 	struct irq_domain *domain;
++	struct regmap *local_regmap;
+ };
+ 
+ static struct armctrl_ic intc __read_mostly;
+@@ -119,12 +126,35 @@ static void armctrl_mask_irq(struct irq_
+ 
+ static void armctrl_unmask_irq(struct irq_data *d)
+ {
+-	if (d->hwirq >= NUMBER_IRQS)
++	if (d->hwirq >= NUMBER_IRQS) {
++		if (num_online_cpus() > 1) {
++			unsigned int data;
++			int ret;
++
++			if (!intc.local_regmap) {
++				pr_err("FIQ is disabled due to missing regmap\n");
++				return;
++			}
++
++			ret = regmap_read(intc.local_regmap,
++					  ARM_LOCAL_GPU_INT_ROUTING, &data);
++			if (ret) {
++				pr_err("Failed to read int routing %d\n", ret);
++				return;
++			}
++
++			data &= ~0xc;
++			data |= (1 << 2);
++			regmap_write(intc.local_regmap,
++				     ARM_LOCAL_GPU_INT_ROUTING, data);
++		}
++
+ 		writel_relaxed(REG_FIQ_ENABLE | hwirq_to_fiq(d->hwirq),
+ 			       intc.base + REG_FIQ_CONTROL);
+-	else
++	} else {
+ 		writel_relaxed(HWIRQ_BIT(d->hwirq),
+ 			       intc.enable[HWIRQ_BANK(d->hwirq)]);
++	}
+ }
+ 
+ static struct irq_chip armctrl_chip = {
+@@ -215,6 +245,15 @@ static int __init armctrl_of_init(struct
+ 		set_handle_irq(bcm2835_handle_irq);
+ 	}
+ 
++	if (is_2836) {
++		intc.local_regmap =
++			syscon_regmap_lookup_by_compatible("brcm,bcm2836-arm-local");
++		if (IS_ERR(intc.local_regmap)) {
++			pr_err("Failed to get local register map. FIQ is disabled for cpus > 1\n");
++			intc.local_regmap = NULL;
++		}
++	}
++
+ 	/* Make a duplicate irq range which is used to enable FIQ */
+ 	for (b = 0; b < NR_BANKS; b++) {
+ 		for (i = 0; i < bank_irqs[b]; i++) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0040-spi-spidev-Completely-disable-the-spidev-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0040-spi-spidev-Completely-disable-the-spidev-warning.patch
new file mode 100644
index 0000000000..87c1cdc7b5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0040-spi-spidev-Completely-disable-the-spidev-warning.patch
@@ -0,0 +1,24 @@
+From e61ce76e706cdafe29c9c0e7bbe39bc8af9377ba Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 14 Jul 2015 10:26:09 +0100
+Subject: [PATCH] spi: spidev: Completely disable the spidev warning
+
+An alternative strategy would be to use "rpi,spidev" instead, but that
+would require many Raspberry Pi Device Tree changes.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/spi/spidev.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/spi/spidev.c
++++ b/drivers/spi/spidev.c
+@@ -747,7 +747,7 @@ static int spidev_probe(struct spi_devic
+ 	 * compatible string, it is a Linux implementation thing
+ 	 * rather than a description of the hardware.
+ 	 */
+-	WARN(spi->dev.of_node &&
++	WARN(0 && spi->dev.of_node &&
+ 	     of_device_is_compatible(spi->dev.of_node, "spidev"),
+ 	     "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0041-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch b/target/linux/bcm27xx/patches-5.15/950-0041-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch
new file mode 100644
index 0000000000..2fc669ba9d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0041-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch
@@ -0,0 +1,101 @@
+From 6d73f2ff2b8fdd774be0430577aed7f08478d541 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Sat, 3 Oct 2015 22:22:55 +0200
+Subject: [PATCH] dmaengine: bcm2835: Load driver early and support
+ legacy API
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Load driver early since at least bcm2708_fb doesn't support deferred
+probing and even if it did, we don't want the video driver deferred.
+Support the legacy DMA API which is needed by bcm2708_fb.
+Don't mask out channel 2.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/dma/Kconfig       |  2 +-
+ drivers/dma/bcm2835-dma.c | 26 +++++++++++++++++++++++++-
+ 2 files changed, 26 insertions(+), 2 deletions(-)
+
+--- a/drivers/dma/Kconfig
++++ b/drivers/dma/Kconfig
+@@ -127,7 +127,7 @@ config BCM_SBA_RAID
+ 
+ config DMA_BCM2835
+ 	tristate "BCM2835 DMA engine support"
+-	depends on ARCH_BCM2835
++	depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709
+ 	select DMA_ENGINE
+ 	select DMA_VIRTUAL_CHANNELS
+ 
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -25,6 +25,7 @@
+ #include <linux/interrupt.h>
+ #include <linux/list.h>
+ #include <linux/module.h>
++#include <linux/platform_data/dma-bcm2708.h>
+ #include <linux/platform_device.h>
+ #include <linux/slab.h>
+ #include <linux/io.h>
+@@ -36,6 +37,7 @@
+ 
+ #define BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED 14
+ #define BCM2835_DMA_CHAN_NAME_SIZE 8
++#define BCM2835_DMA_BULK_MASK  BIT(0)
+ 
+ /**
+  * struct bcm2835_dmadev - BCM2835 DMA controller
+@@ -906,6 +908,9 @@ static int bcm2835_dma_probe(struct plat
+ 	base = devm_ioremap_resource(&pdev->dev, res);
+ 	if (IS_ERR(base))
+ 		return PTR_ERR(base);
++	rc = bcm_dmaman_probe(pdev, base, BCM2835_DMA_BULK_MASK);
++	if (rc)
++		dev_err(&pdev->dev, "Failed to initialize the legacy API\n");
+ 
+ 	od->base = base;
+ 
+@@ -951,6 +956,9 @@ static int bcm2835_dma_probe(struct plat
+ 		goto err_no_dma;
+ 	}
+ 
++	/* Channel 0 is used by the legacy API */
++	chans_available &= ~BCM2835_DMA_BULK_MASK;
++
+ 	/* get irqs for each channel that we support */
+ 	for (i = 0; i <= BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED; i++) {
+ 		/* skip masked out channels */
+@@ -1025,6 +1033,7 @@ static int bcm2835_dma_remove(struct pla
+ {
+ 	struct bcm2835_dmadev *od = platform_get_drvdata(pdev);
+ 
++	bcm_dmaman_remove(pdev);
+ 	dma_async_device_unregister(&od->ddev);
+ 	bcm2835_dma_free(od);
+ 
+@@ -1040,7 +1049,22 @@ static struct platform_driver bcm2835_dm
+ 	},
+ };
+ 
+-module_platform_driver(bcm2835_dma_driver);
++static int bcm2835_dma_init(void)
++{
++	return platform_driver_register(&bcm2835_dma_driver);
++}
++
++static void bcm2835_dma_exit(void)
++{
++	platform_driver_unregister(&bcm2835_dma_driver);
++}
++
++/*
++ * Load after serial driver (arch_initcall) so we see the messages if it fails,
++ * but before drivers (module_init) that need a DMA channel.
++ */
++subsys_initcall(bcm2835_dma_init);
++module_exit(bcm2835_dma_exit);
+ 
+ MODULE_ALIAS("platform:bcm2835-dma");
+ MODULE_DESCRIPTION("BCM2835 DMA engine driver");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0042-rtc-Add-SPI-alias-for-pcf2123-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0042-rtc-Add-SPI-alias-for-pcf2123-driver.patch
new file mode 100644
index 0000000000..23193ea600
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0042-rtc-Add-SPI-alias-for-pcf2123-driver.patch
@@ -0,0 +1,20 @@
+From 215300abf2b0407e145e400ddcf264b5314b7fe0 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 15 Jun 2016 16:48:41 +0100
+Subject: [PATCH] rtc: Add SPI alias for pcf2123 driver
+
+Without this alias, Device Tree won't cause the driver
+to be loaded.
+
+See: https://github.com/raspberrypi/linux/pull/1510
+---
+ drivers/rtc/rtc-pcf2123.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/rtc/rtc-pcf2123.c
++++ b/drivers/rtc/rtc-pcf2123.c
+@@ -473,3 +473,4 @@ module_spi_driver(pcf2123_driver);
+ MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>");
+ MODULE_DESCRIPTION("NXP PCF2123 RTC driver");
+ MODULE_LICENSE("GPL");
++MODULE_ALIAS("spi:rtc-pcf2123");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0043-watchdog-bcm2835-Support-setting-reboot-partition.patch b/target/linux/bcm27xx/patches-5.15/950-0043-watchdog-bcm2835-Support-setting-reboot-partition.patch
new file mode 100644
index 0000000000..fde6798180
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0043-watchdog-bcm2835-Support-setting-reboot-partition.patch
@@ -0,0 +1,102 @@
+From 210be7c48e6f67da053ae7345cde7bd576797fac Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Fri, 7 Oct 2016 16:50:59 +0200
+Subject: [PATCH] watchdog: bcm2835: Support setting reboot partition
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The Raspberry Pi firmware looks at the RSTS register to know which
+partition to boot from. The reboot syscall command
+LINUX_REBOOT_CMD_RESTART2 supports passing in a string argument.
+
+Add support for passing in a partition number 0..63 to boot from.
+Partition 63 is a special partiton indicating halt.
+If the partition doesn't exist, the firmware falls back to partition 0.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/watchdog/bcm2835_wdt.c | 49 +++++++++++++++++++---------------
+ 1 file changed, 27 insertions(+), 22 deletions(-)
+
+--- a/drivers/watchdog/bcm2835_wdt.c
++++ b/drivers/watchdog/bcm2835_wdt.c
+@@ -32,13 +32,7 @@
+ #define PM_RSTC_WRCFG_SET		0x00000030
+ #define PM_RSTC_WRCFG_FULL_RESET	0x00000020
+ #define PM_RSTC_RESET			0x00000102
+-
+-/*
+- * The Raspberry Pi firmware uses the RSTS register to know which partition
+- * to boot from. The partition value is spread into bits 0, 2, 4, 6, 8, 10.
+- * Partition 63 is a special partition used by the firmware to indicate halt.
+- */
+-#define PM_RSTS_RASPBERRYPI_HALT	0x555
++#define PM_RSTS_PARTITION_CLR          0xfffffaaa
+ 
+ #define SECS_TO_WDOG_TICKS(x) ((x) << 16)
+ #define WDOG_TICKS_TO_SECS(x) ((x) >> 16)
+@@ -97,9 +91,24 @@ static unsigned int bcm2835_wdt_get_time
+ 	return WDOG_TICKS_TO_SECS(ret & PM_WDOG_TIME_SET);
+ }
+ 
+-static void __bcm2835_restart(struct bcm2835_wdt *wdt)
++/*
++ * The Raspberry Pi firmware uses the RSTS register to know which partiton
++ * to boot from. The partiton value is spread into bits 0, 2, 4, 6, 8, 10.
++ * Partiton 63 is a special partition used by the firmware to indicate halt.
++ */
++
++static void __bcm2835_restart(struct bcm2835_wdt *wdt, u8 partition)
+ {
+-	u32 val;
++	u32 val, rsts;
++
++	rsts = (partition & BIT(0)) | ((partition & BIT(1)) << 1) |
++	       ((partition & BIT(2)) << 2) | ((partition & BIT(3)) << 3) |
++	       ((partition & BIT(4)) << 4) | ((partition & BIT(5)) << 5);
++
++	val = readl_relaxed(wdt->base + PM_RSTS);
++	val &= PM_RSTS_PARTITION_CLR;
++	val |= PM_PASSWORD | rsts;
++	writel_relaxed(val, wdt->base + PM_RSTS);
+ 
+ 	/* use a timeout of 10 ticks (~150us) */
+ 	writel_relaxed(10 | PM_PASSWORD, wdt->base + PM_WDOG);
+@@ -117,7 +126,13 @@ static int bcm2835_restart(struct watchd
+ {
+ 	struct bcm2835_wdt *wdt = watchdog_get_drvdata(wdog);
+ 
+-	__bcm2835_restart(wdt);
++	unsigned long long val;
++	u8 partition = 0;
++
++	if (data && !kstrtoull(data, 0, &val) && val <= 63)
++		partition = val;
++
++	__bcm2835_restart(wdt, partition);
+ 
+ 	return 0;
+ }
+@@ -152,19 +167,9 @@ static struct watchdog_device bcm2835_wd
+ static void bcm2835_power_off(void)
+ {
+ 	struct bcm2835_wdt *wdt = bcm2835_power_off_wdt;
+-	u32 val;
+-
+-	/*
+-	 * We set the watchdog hard reset bit here to distinguish this reset
+-	 * from the normal (full) reset. bootcode.bin will not reboot after a
+-	 * hard reset.
+-	 */
+-	val = readl_relaxed(wdt->base + PM_RSTS);
+-	val |= PM_PASSWORD | PM_RSTS_RASPBERRYPI_HALT;
+-	writel_relaxed(val, wdt->base + PM_RSTS);
+ 
+-	/* Continue with normal reset mechanism */
+-	__bcm2835_restart(wdt);
++	/* Partition 63 tells the firmware that this is a halt */
++	__bcm2835_restart(wdt, 63);
+ }
+ 
+ static int bcm2835_wdt_probe(struct platform_device *pdev)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0044-reboot-Use-power-off-rather-than-busy-spinning-when-.patch b/target/linux/bcm27xx/patches-5.15/950-0044-reboot-Use-power-off-rather-than-busy-spinning-when-.patch
new file mode 100644
index 0000000000..df765ea8e5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0044-reboot-Use-power-off-rather-than-busy-spinning-when-.patch
@@ -0,0 +1,23 @@
+From 3da4c0aceaaf3fabfc1cd0ba8b8480dec0e27f7b Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 5 Apr 2016 19:40:12 +0100
+Subject: [PATCH] reboot: Use power off rather than busy spinning when
+ halt is requested
+
+---
+ arch/arm/kernel/reboot.c | 4 +---
+ 1 file changed, 1 insertion(+), 3 deletions(-)
+
+--- a/arch/arm/kernel/reboot.c
++++ b/arch/arm/kernel/reboot.c
+@@ -101,9 +101,7 @@ void machine_shutdown(void)
+  */
+ void machine_halt(void)
+ {
+-	local_irq_disable();
+-	smp_send_stop();
+-	while (1);
++	machine_power_off();
+ }
+ 
+ /*
diff --git a/target/linux/bcm27xx/patches-5.15/950-0045-bcm-Make-RASPBERRYPI_POWER-depend-on-PM.patch b/target/linux/bcm27xx/patches-5.15/950-0045-bcm-Make-RASPBERRYPI_POWER-depend-on-PM.patch
new file mode 100644
index 0000000000..3274583613
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0045-bcm-Make-RASPBERRYPI_POWER-depend-on-PM.patch
@@ -0,0 +1,19 @@
+From b185c9cacc9ff4618e1cfd3cb7165a0144af2d1b Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 9 Nov 2016 13:02:52 +0000
+Subject: [PATCH] bcm: Make RASPBERRYPI_POWER depend on PM
+
+---
+ drivers/soc/bcm/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/soc/bcm/Kconfig
++++ b/drivers/soc/bcm/Kconfig
+@@ -17,6 +17,7 @@ config RASPBERRYPI_POWER
+ 	bool "Raspberry Pi power domain driver"
+ 	depends on ARCH_BCM2835 || (COMPILE_TEST && OF)
+ 	depends on RASPBERRYPI_FIRMWARE=y
++	depends on PM
+ 	select PM_GENERIC_DOMAINS if PM
+ 	help
+ 	  This enables support for the RPi power domains which can be enabled
diff --git a/target/linux/bcm27xx/patches-5.15/950-0046-Register-the-clocks-early-during-the-boot-process-so.patch b/target/linux/bcm27xx/patches-5.15/950-0046-Register-the-clocks-early-during-the-boot-process-so.patch
new file mode 100644
index 0000000000..8dd6abdfdb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0046-Register-the-clocks-early-during-the-boot-process-so.patch
@@ -0,0 +1,45 @@
+From 098cc3b9ed15b24089bae72c5de9d099910d10d4 Mon Sep 17 00:00:00 2001
+From: Martin Sperl <kernel@martin.sperl.org>
+Date: Fri, 2 Sep 2016 16:45:27 +0100
+Subject: [PATCH] Register the clocks early during the boot process, so
+ that special/critical clocks can get enabled early on in the boot process
+ avoiding the risk of disabling a clock, pll_divider or pll when a claiming
+ driver fails to install propperly - maybe it needs to defer.
+
+Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 15 +++++++++++++--
+ 1 file changed, 13 insertions(+), 2 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -2289,8 +2289,15 @@ static int bcm2835_clk_probe(struct plat
+ 	if (ret)
+ 		return ret;
+ 
+-	return of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
++	ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
+ 				      &cprman->onecell);
++	if (ret)
++		return ret;
++
++	/* note that we have registered all the clocks */
++	dev_dbg(dev, "registered %d clocks\n", asize);
++
++	return 0;
+ }
+ 
+ static const struct cprman_plat_data cprman_bcm2835_plat_data = {
+@@ -2316,7 +2323,11 @@ static struct platform_driver bcm2835_cl
+ 	.probe          = bcm2835_clk_probe,
+ };
+ 
+-builtin_platform_driver(bcm2835_clk_driver);
++static int __init __bcm2835_clk_driver_init(void)
++{
++	return platform_driver_register(&bcm2835_clk_driver);
++}
++core_initcall(__bcm2835_clk_driver_init);
+ 
+ MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
+ MODULE_DESCRIPTION("BCM2835 clock driver");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0047-bcm2835-rng-Avoid-initialising-if-already-enabled.patch b/target/linux/bcm27xx/patches-5.15/950-0047-bcm2835-rng-Avoid-initialising-if-already-enabled.patch
new file mode 100644
index 0000000000..962667eee4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0047-bcm2835-rng-Avoid-initialising-if-already-enabled.patch
@@ -0,0 +1,25 @@
+From d7e520c88cb8e7025c93c809350794711fc94f52 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 6 Dec 2016 17:05:39 +0000
+Subject: [PATCH] bcm2835-rng: Avoid initialising if already enabled
+
+Avoids the 0x40000 cycles of warmup again if firmware has already used it
+---
+ drivers/char/hw_random/bcm2835-rng.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/char/hw_random/bcm2835-rng.c
++++ b/drivers/char/hw_random/bcm2835-rng.c
+@@ -106,8 +106,10 @@ static int bcm2835_rng_init(struct hwrng
+ 	}
+ 
+ 	/* set warm-up count & enable */
+-	rng_writel(priv, RNG_WARMUP_COUNT, RNG_STATUS);
+-	rng_writel(priv, RNG_RBGEN, RNG_CTRL);
++	if (!(rng_readl(priv, RNG_CTRL) & RNG_RBGEN)) {
++		rng_writel(priv, RNG_WARMUP_COUNT, RNG_STATUS);
++		rng_writel(priv, RNG_RBGEN, RNG_CTRL);
++	}
+ 
+ 	return ret;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch b/target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch
new file mode 100644
index 0000000000..8f004a80d9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0048-clk-bcm2835-Mark-used-PLLs-and-dividers-CRITICAL.patch
@@ -0,0 +1,28 @@
+From 3ac4dc10f82935d6cfc759bb34e9686b391f3371 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 13 Feb 2017 17:20:08 +0000
+Subject: [PATCH] clk-bcm2835: Mark used PLLs and dividers CRITICAL
+
+The VPU configures and relies on several PLLs and dividers. Mark all
+enabled dividers and their PLLs as CRITICAL to prevent the kernel from
+switching them off.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -1378,6 +1378,11 @@ bcm2835_register_pll_divider(struct bcm2
+ 	divider->div.hw.init = &init;
+ 	divider->div.table = NULL;
+ 
++	if (!(cprman_read(cprman, data->cm_reg) & data->hold_mask)) {
++		init.flags |= CLK_IS_CRITICAL;
++		divider->div.flags |= CLK_IS_CRITICAL;
++	}
++
+ 	divider->cprman = cprman;
+ 	divider->data = divider_data;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0049-clk-bcm2835-Add-claim-clocks-property.patch b/target/linux/bcm27xx/patches-5.15/950-0049-clk-bcm2835-Add-claim-clocks-property.patch
new file mode 100644
index 0000000000..809b571c52
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0049-clk-bcm2835-Add-claim-clocks-property.patch
@@ -0,0 +1,120 @@
+From 9e4d97d8b1643b0eccdcf793e898101b18a01801 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 13 Feb 2017 17:20:08 +0000
+Subject: [PATCH] clk-bcm2835: Add claim-clocks property
+
+The claim-clocks property can be used to prevent PLLs and dividers
+from being marked as critical. It contains a vector of clock IDs,
+as defined by dt-bindings/clock/bcm2835.h.
+
+Use this mechanism to claim PLLD_DSI0, PLLD_DSI1, PLLH_AUX and
+PLLH_PIX for the vc4_kms_v3d driver.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 45 ++++++++++++++++++++++++++++++++---
+ 1 file changed, 42 insertions(+), 3 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -1306,6 +1306,8 @@ static const struct clk_ops bcm2835_vpu_
+ 	.debug_init = bcm2835_clock_debug_init,
+ };
+ 
++static bool bcm2835_clk_is_claimed(const char *name);
++
+ static struct clk_hw *bcm2835_register_pll(struct bcm2835_cprman *cprman,
+ 					   const void *data)
+ {
+@@ -1323,6 +1325,9 @@ static struct clk_hw *bcm2835_register_p
+ 	init.ops = &bcm2835_pll_clk_ops;
+ 	init.flags = pll_data->flags | CLK_IGNORE_UNUSED;
+ 
++	if (!bcm2835_clk_is_claimed(pll_data->name))
++		init.flags |= CLK_IS_CRITICAL;
++
+ 	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+ 	if (!pll)
+ 		return NULL;
+@@ -1378,9 +1383,11 @@ bcm2835_register_pll_divider(struct bcm2
+ 	divider->div.hw.init = &init;
+ 	divider->div.table = NULL;
+ 
+-	if (!(cprman_read(cprman, data->cm_reg) & data->hold_mask)) {
+-		init.flags |= CLK_IS_CRITICAL;
+-		divider->div.flags |= CLK_IS_CRITICAL;
++	if (!(cprman_read(cprman, divider_data->cm_reg) & divider_data->hold_mask)) {
++		if (!bcm2835_clk_is_claimed(divider_data->source_pll))
++			init.flags |= CLK_IS_CRITICAL;
++		if (!bcm2835_clk_is_claimed(divider_data->name))
++			divider->div.flags |= CLK_IS_CRITICAL;
+ 	}
+ 
+ 	divider->cprman = cprman;
+@@ -1437,6 +1444,15 @@ static struct clk_hw *bcm2835_register_c
+ 	init.flags = clock_data->flags | CLK_IGNORE_UNUSED;
+ 
+ 	/*
++	 * Some GPIO clocks for ethernet/wifi PLLs are marked as
++	 * critical (since some platforms use them), but if the
++	 * firmware didn't have them turned on then they clearly
++	 * aren't actually critical.
++	 */
++	if ((cprman_read(cprman, clock_data->ctl_reg) & CM_ENABLE) == 0)
++		init.flags &= ~CLK_IS_CRITICAL;
++
++	/*
+ 	 * Pass the CLK_SET_RATE_PARENT flag if we are allowed to propagate
+ 	 * rate changes on at least of the parents.
+ 	 */
+@@ -2215,6 +2231,8 @@ static const struct bcm2835_clk_desc clk
+ 		.ctl_reg = CM_PERIICTL),
+ };
+ 
++static bool bcm2835_clk_claimed[ARRAY_SIZE(clk_desc_array)];
++
+ /*
+  * Permanently take a reference on the parent of the SDRAM clock.
+  *
+@@ -2234,6 +2252,19 @@ static int bcm2835_mark_sdc_parent_criti
+ 	return clk_prepare_enable(parent);
+ }
+ 
++static bool bcm2835_clk_is_claimed(const char *name)
++{
++	int i;
++
++	for (i = 0; i < ARRAY_SIZE(clk_desc_array); i++) {
++		const char *clk_name = *(const char **)(clk_desc_array[i].data);
++		if (!strcmp(name, clk_name))
++		    return bcm2835_clk_claimed[i];
++	}
++
++	return false;
++}
++
+ static int bcm2835_clk_probe(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
+@@ -2243,6 +2274,7 @@ static int bcm2835_clk_probe(struct plat
+ 	const size_t asize = ARRAY_SIZE(clk_desc_array);
+ 	const struct cprman_plat_data *pdata;
+ 	size_t i;
++	u32 clk_id;
+ 	int ret;
+ 
+ 	pdata = of_device_get_match_data(&pdev->dev);
+@@ -2261,6 +2293,13 @@ static int bcm2835_clk_probe(struct plat
+ 	if (IS_ERR(cprman->regs))
+ 		return PTR_ERR(cprman->regs);
+ 
++	memset(bcm2835_clk_claimed, 0, sizeof(bcm2835_clk_claimed));
++	for (i = 0;
++	     !of_property_read_u32_index(pdev->dev.of_node, "claim-clocks",
++					 i, &clk_id);
++	     i++)
++		bcm2835_clk_claimed[clk_id]= true;
++
+ 	memcpy(cprman->real_parent_names, cprman_parent_names,
+ 	       sizeof(cprman_parent_names));
+ 	of_clk_parent_fill(dev->of_node, cprman->real_parent_names,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0050-clk-bcm2835-Read-max-core-clock-from-firmware.patch b/target/linux/bcm27xx/patches-5.15/950-0050-clk-bcm2835-Read-max-core-clock-from-firmware.patch
new file mode 100644
index 0000000000..cfa152c2f6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0050-clk-bcm2835-Read-max-core-clock-from-firmware.patch
@@ -0,0 +1,115 @@
+From 6113493e995480949876c74ec24ecd202004c3ae Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 6 Mar 2017 09:06:18 +0000
+Subject: [PATCH] clk-bcm2835: Read max core clock from firmware
+
+The VPU is responsible for managing the core clock, usually under
+direction from the bcm2835-cpufreq driver but not via the clk-bcm2835
+driver. Since the core frequency can change without warning, it is
+safer to report the maximum clock rate to users of the core clock -
+I2C, SPI and the mini UART - to err on the safe side when calculating
+clock divisors.
+
+If the DT node for the clock driver includes a reference to the
+firmware node, use the firmware API to query the maximum core clock
+instead of reading the divider registers.
+
+Prior to this patch, a "100KHz" I2C bus was sometimes clocked at about
+160KHz. In particular, switching to the 4.9 kernel was likely to break
+SenseHAT usage on a Pi3.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 39 ++++++++++++++++++++++++++++++++++-
+ 1 file changed, 38 insertions(+), 1 deletion(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -35,6 +35,7 @@
+ #include <linux/platform_device.h>
+ #include <linux/slab.h>
+ #include <dt-bindings/clock/bcm2835.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+ #define CM_PASSWORD		0x5a000000
+ 
+@@ -295,6 +296,8 @@
+ #define SOC_BCM2711		BIT(1)
+ #define SOC_ALL			(SOC_BCM2835 | SOC_BCM2711)
+ 
++#define VCMSG_ID_CORE_CLOCK     4
++
+ /*
+  * Names of clocks used within the driver that need to be replaced
+  * with an external parent's name.  This array is in the order that
+@@ -313,6 +316,7 @@ static const char *const cprman_parent_n
+ struct bcm2835_cprman {
+ 	struct device *dev;
+ 	void __iomem *regs;
++	struct rpi_firmware *fw;
+ 	spinlock_t regs_lock; /* spinlock for all clocks */
+ 	unsigned int soc;
+ 
+@@ -1010,6 +1014,30 @@ static unsigned long bcm2835_clock_get_r
+ 	return bcm2835_clock_rate_from_divisor(clock, parent_rate, div);
+ }
+ 
++static unsigned long bcm2835_clock_get_rate_vpu(struct clk_hw *hw,
++						unsigned long parent_rate)
++{
++	struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
++	struct bcm2835_cprman *cprman = clock->cprman;
++
++	if (cprman->fw) {
++		struct {
++			u32 id;
++			u32 val;
++		} packet;
++
++		packet.id = VCMSG_ID_CORE_CLOCK;
++		packet.val = 0;
++
++		if (!rpi_firmware_property(cprman->fw,
++					   RPI_FIRMWARE_GET_MAX_CLOCK_RATE,
++					   &packet, sizeof(packet)))
++			return packet.val;
++	}
++
++	return bcm2835_clock_get_rate(hw, parent_rate);
++}
++
+ static void bcm2835_clock_wait_busy(struct bcm2835_clock *clock)
+ {
+ 	struct bcm2835_cprman *cprman = clock->cprman;
+@@ -1298,7 +1326,7 @@ static int bcm2835_vpu_clock_is_on(struc
+  */
+ static const struct clk_ops bcm2835_vpu_clock_clk_ops = {
+ 	.is_prepared = bcm2835_vpu_clock_is_on,
+-	.recalc_rate = bcm2835_clock_get_rate,
++	.recalc_rate = bcm2835_clock_get_rate_vpu,
+ 	.set_rate = bcm2835_clock_set_rate,
+ 	.determine_rate = bcm2835_clock_determine_rate,
+ 	.set_parent = bcm2835_clock_set_parent,
+@@ -2273,6 +2301,7 @@ static int bcm2835_clk_probe(struct plat
+ 	const struct bcm2835_clk_desc *desc;
+ 	const size_t asize = ARRAY_SIZE(clk_desc_array);
+ 	const struct cprman_plat_data *pdata;
++	struct device_node *fw_node;
+ 	size_t i;
+ 	u32 clk_id;
+ 	int ret;
+@@ -2293,6 +2322,14 @@ static int bcm2835_clk_probe(struct plat
+ 	if (IS_ERR(cprman->regs))
+ 		return PTR_ERR(cprman->regs);
+ 
++	fw_node = of_parse_phandle(dev->of_node, "firmware", 0);
++	if (fw_node) {
++		struct rpi_firmware *fw = rpi_firmware_get(NULL);
++		if (!fw)
++			return -EPROBE_DEFER;
++		cprman->fw = fw;
++	}
++
+ 	memset(bcm2835_clk_claimed, 0, sizeof(bcm2835_clk_claimed));
+ 	for (i = 0;
+ 	     !of_property_read_u32_index(pdev->dev.of_node, "claim-clocks",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0051-sound-Demote-deferral-errors-to-INFO-level.patch b/target/linux/bcm27xx/patches-5.15/950-0051-sound-Demote-deferral-errors-to-INFO-level.patch
new file mode 100644
index 0000000000..ce7ad5f4a3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0051-sound-Demote-deferral-errors-to-INFO-level.patch
@@ -0,0 +1,35 @@
+From 52c470c6deac07f7499c9d10570509b9cf2fc3af Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 9 Feb 2017 14:36:44 +0000
+Subject: [PATCH] sound: Demote deferral errors to INFO level
+
+At present there is no mechanism to specify driver load order,
+which can lead to deferrals and repeated retries until successful.
+Since this situation is expected, reduce the dmesg level to
+INFO and mention that the operation will be retried.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ sound/soc/soc-core.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/sound/soc/soc-core.c
++++ b/sound/soc/soc-core.c
+@@ -1017,7 +1017,7 @@ int snd_soc_add_pcm_runtime(struct snd_s
+ 	for_each_link_cpus(dai_link, i, cpu) {
+ 		asoc_rtd_to_cpu(rtd, i) = snd_soc_find_dai(cpu);
+ 		if (!asoc_rtd_to_cpu(rtd, i)) {
+-			dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
++			dev_info(card->dev, "ASoC: CPU DAI %s not registered - will retry\n",
+ 				 cpu->dai_name);
+ 			goto _err_defer;
+ 		}
+@@ -1028,7 +1028,7 @@ int snd_soc_add_pcm_runtime(struct snd_s
+ 	for_each_link_codecs(dai_link, i, codec) {
+ 		asoc_rtd_to_codec(rtd, i) = snd_soc_find_dai(codec);
+ 		if (!asoc_rtd_to_codec(rtd, i)) {
+-			dev_info(card->dev, "ASoC: CODEC DAI %s not registered\n",
++			dev_info(card->dev, "ASoC: CODEC DAI %s not registered- will retry\n",
+ 				 codec->dai_name);
+ 			goto _err_defer;
+ 		}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0052-Update-vfpmodule.c.patch b/target/linux/bcm27xx/patches-5.15/950-0052-Update-vfpmodule.c.patch
new file mode 100644
index 0000000000..86bf25be86
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0052-Update-vfpmodule.c.patch
@@ -0,0 +1,137 @@
+From fabb6bb88caed1f6fb257cc0c711dba5c5830084 Mon Sep 17 00:00:00 2001
+From: Claggy3 <stephen.maclagan@hotmail.com>
+Date: Sat, 11 Feb 2017 14:00:30 +0000
+Subject: [PATCH] Update vfpmodule.c
+
+Christopher Alexander Tobias Schulze - May 2, 2015, 11:57 a.m.
+This patch fixes a problem with VFP state save and restore related
+to exception handling (panic with message "BUG: unsupported FP
+instruction in kernel mode") present on VFP11 floating point units
+(as used with ARM1176JZF-S CPUs, e.g. on first generation Raspberry
+Pi boards). This patch was developed and discussed on
+
+   https://github.com/raspberrypi/linux/issues/859
+
+A precondition to see the crashes is that floating point exception
+traps are enabled. In this case, the VFP11 might determine that a FPU
+operation needs to trap at a point in time when it is not possible to
+signal this to the ARM11 core any more. The VFP11 will then set the
+FPEXC.EX bit and store the trapped opcode in FPINST. (In some cases,
+a second opcode might have been accepted by the VFP11 before the
+exception was detected and could be reported to the ARM11 - in this
+case, the VFP11 also sets FPEXC.FP2V and stores the second opcode in
+FPINST2.)
+
+If FPEXC.EX is set, the VFP11 will "bounce" the next FPU opcode issued
+by the ARM11 CPU, which will be seen by the ARM11 as an undefined opcode
+trap. The VFP support code examines the FPEXC.EX and FPEXC.FP2V bits
+to decide what actions to take, i.e., whether to emulate the opcodes
+found in FPINST and FPINST2, and whether to retry the bounced instruction.
+
+If a user space application has left the VFP11 in this "pending trap"
+state, the next FPU opcode issued to the VFP11 might actually be the
+VSTMIA operation vfp_save_state() uses to store the FPU registers
+to memory (in our test cases, when building the signal stack frame).
+In this case, the kernel crashes as described above.
+
+This patch fixes the problem by making sure that vfp_save_state() is
+always entered with FPEXC.EX cleared. (The current value of FPEXC has
+already been saved, so this does not corrupt the context. Clearing
+FPEXC.EX has no effects on FPINST or FPINST2. Also note that many
+callers already modify FPEXC by setting FPEXC.EN before invoking
+vfp_save_state().)
+
+This patch also addresses a second problem related to FPEXC.EX: After
+returning from signal handling, the kernel reloads the VFP context
+from the user mode stack. However, the current code explicitly clears
+both FPEXC.EX and FPEXC.FP2V during reload. As VFP11 requires these
+bits to be preserved, this patch disables clearing them for VFP
+implementations belonging to architecture 1. There should be no
+negative side effects: the user can set both bits by executing FPU
+opcodes anyway, and while user code may now place arbitrary values
+into FPINST and FPINST2 (e.g., non-VFP ARM opcodes) the VFP support
+code knows which instructions can be emulated, and rejects other
+opcodes with "unhandled bounce" messages, so there should be no
+security impact from allowing reloading FPEXC.EX and FPEXC.FP2V.
+
+Signed-off-by: Christopher Alexander Tobias Schulze <cat.schulze@alice-dsl.net>
+---
+ arch/arm/vfp/vfpmodule.c | 25 +++++++++++++++++++------
+ 1 file changed, 19 insertions(+), 6 deletions(-)
+
+--- a/arch/arm/vfp/vfpmodule.c
++++ b/arch/arm/vfp/vfpmodule.c
+@@ -176,8 +176,11 @@ static int vfp_notifier(struct notifier_
+ 		 * case the thread migrates to a different CPU. The
+ 		 * restoring is done lazily.
+ 		 */
+-		if ((fpexc & FPEXC_EN) && vfp_current_hw_state[cpu])
++		if ((fpexc & FPEXC_EN) && vfp_current_hw_state[cpu]) {
++			/* vfp_save_state oopses on VFP11 if EX bit set */
++			fmxr(FPEXC, fpexc & ~FPEXC_EX);
+ 			vfp_save_state(vfp_current_hw_state[cpu], fpexc);
++		}
+ #endif
+ 
+ 		/*
+@@ -454,13 +457,16 @@ static int vfp_pm_suspend(void)
+ 	/* if vfp is on, then save state for resumption */
+ 	if (fpexc & FPEXC_EN) {
+ 		pr_debug("%s: saving vfp state\n", __func__);
++		/* vfp_save_state oopses on VFP11 if EX bit set */
++		fmxr(FPEXC, fpexc & ~FPEXC_EX);
+ 		vfp_save_state(&ti->vfpstate, fpexc);
+ 
+ 		/* disable, just in case */
+ 		fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);
+ 	} else if (vfp_current_hw_state[ti->cpu]) {
+ #ifndef CONFIG_SMP
+-		fmxr(FPEXC, fpexc | FPEXC_EN);
++		/* vfp_save_state oopses on VFP11 if EX bit set */
++		fmxr(FPEXC, (fpexc & ~FPEXC_EX) | FPEXC_EN);
+ 		vfp_save_state(vfp_current_hw_state[ti->cpu], fpexc);
+ 		fmxr(FPEXC, fpexc);
+ #endif
+@@ -523,7 +529,8 @@ void vfp_sync_hwstate(struct thread_info
+ 		/*
+ 		 * Save the last VFP state on this CPU.
+ 		 */
+-		fmxr(FPEXC, fpexc | FPEXC_EN);
++		/* vfp_save_state oopses on VFP11 if EX bit set */
++		fmxr(FPEXC, (fpexc & ~FPEXC_EX) | FPEXC_EN);
+ 		vfp_save_state(&thread->vfpstate, fpexc | FPEXC_EN);
+ 		fmxr(FPEXC, fpexc);
+ 	}
+@@ -589,6 +596,7 @@ int vfp_restore_user_hwstate(struct user
+ 	struct thread_info *thread = current_thread_info();
+ 	struct vfp_hard_struct *hwstate = &thread->vfpstate.hard;
+ 	unsigned long fpexc;
++	u32 fpsid = fmrx(FPSID);
+ 
+ 	/* Disable VFP to avoid corrupting the new thread state. */
+ 	vfp_flush_hwstate(thread);
+@@ -611,8 +619,12 @@ int vfp_restore_user_hwstate(struct user
+ 	/* Ensure the VFP is enabled. */
+ 	fpexc |= FPEXC_EN;
+ 
+-	/* Ensure FPINST2 is invalid and the exception flag is cleared. */
+-	fpexc &= ~(FPEXC_EX | FPEXC_FP2V);
++	/* Mask FPXEC_EX and FPEXC_FP2V if not required by VFP arch */
++	if ((fpsid & FPSID_ARCH_MASK) != (1 << FPSID_ARCH_BIT)) {
++		/* Ensure FPINST2 is invalid and the exception flag is cleared. */
++		fpexc &= ~(FPEXC_EX | FPEXC_FP2V);
++	}
++
+ 	hwstate->fpexc = fpexc;
+ 
+ 	hwstate->fpinst = ufp_exc->fpinst;
+@@ -726,7 +738,8 @@ void kernel_neon_begin(void)
+ 	cpu = get_cpu();
+ 
+ 	fpexc = fmrx(FPEXC) | FPEXC_EN;
+-	fmxr(FPEXC, fpexc);
++	/* vfp_save_state oopses on VFP11 if EX bit set */
++	fmxr(FPEXC, fpexc & ~FPEXC_EX);
+ 
+ 	/*
+ 	 * Save the userland NEON/VFP state. Under UP,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0053-i2c-bcm2835-Add-debug-support.patch b/target/linux/bcm27xx/patches-5.15/950-0053-i2c-bcm2835-Add-debug-support.patch
new file mode 100644
index 0000000000..bcd1ea035f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0053-i2c-bcm2835-Add-debug-support.patch
@@ -0,0 +1,189 @@
+From 2266ce21e9418e110b747deae420fbd08c9c6bb5 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Tue, 1 Nov 2016 15:15:41 +0100
+Subject: [PATCH] i2c: bcm2835: Add debug support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This adds a debug module parameter to aid in debugging transfer issues
+by printing info to the kernel log. When enabled, status values are
+collected in the interrupt routine and msg info in
+bcm2835_i2c_start_transfer(). This is done in a way that tries to avoid
+affecting timing. Having printk in the isr can mask issues.
+
+debug values (additive):
+1: Print info on error
+2: Print info on all transfers
+3: Print messages before transfer is started
+
+The value can be changed at runtime:
+/sys/module/i2c_bcm2835/parameters/debug
+
+Example output, debug=3:
+[  747.114448] bcm2835_i2c_xfer: msg(1/2) write addr=0x54, len=2 flags= [i2c1]
+[  747.114463] bcm2835_i2c_xfer: msg(2/2) read addr=0x54, len=32 flags= [i2c1]
+[  747.117809] start_transfer: msg(1/2) write addr=0x54, len=2 flags= [i2c1]
+[  747.117825] isr: remain=2, status=0x30000055 : TA TXW TXD TXE  [i2c1]
+[  747.117839] start_transfer: msg(2/2) read addr=0x54, len=32 flags= [i2c1]
+[  747.117849] isr: remain=32, status=0xd0000039 : TA RXR TXD RXD  [i2c1]
+[  747.117861] isr: remain=20, status=0xd0000039 : TA RXR TXD RXD  [i2c1]
+[  747.117870] isr: remain=8, status=0x32 : DONE TXD RXD  [i2c1]
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/i2c/busses/i2c-bcm2835.c | 99 +++++++++++++++++++++++++++++++-
+ 1 file changed, 98 insertions(+), 1 deletion(-)
+
+--- a/drivers/i2c/busses/i2c-bcm2835.c
++++ b/drivers/i2c/busses/i2c-bcm2835.c
+@@ -56,6 +56,18 @@
+ #define BCM2835_I2C_CDIV_MIN	0x0002
+ #define BCM2835_I2C_CDIV_MAX	0xFFFE
+ 
++static unsigned int debug;
++module_param(debug, uint, 0644);
++MODULE_PARM_DESC(debug, "1=err, 2=isr, 3=xfer");
++
++#define BCM2835_DEBUG_MAX	512
++struct bcm2835_debug {
++	struct i2c_msg *msg;
++	int msg_idx;
++	size_t remain;
++	u32 status;
++};
++
+ struct bcm2835_i2c_dev {
+ 	struct device *dev;
+ 	void __iomem *regs;
+@@ -68,8 +80,78 @@ struct bcm2835_i2c_dev {
+ 	u32 msg_err;
+ 	u8 *msg_buf;
+ 	size_t msg_buf_remaining;
++	struct bcm2835_debug debug[BCM2835_DEBUG_MAX];
++	unsigned int debug_num;
++	unsigned int debug_num_msgs;
+ };
+ 
++static inline void bcm2835_debug_add(struct bcm2835_i2c_dev *i2c_dev, u32 s)
++{
++	if (!i2c_dev->debug_num_msgs || i2c_dev->debug_num >= BCM2835_DEBUG_MAX)
++		return;
++
++	i2c_dev->debug[i2c_dev->debug_num].msg = i2c_dev->curr_msg;
++	i2c_dev->debug[i2c_dev->debug_num].msg_idx =
++				i2c_dev->debug_num_msgs - i2c_dev->num_msgs;
++	i2c_dev->debug[i2c_dev->debug_num].remain = i2c_dev->msg_buf_remaining;
++	i2c_dev->debug[i2c_dev->debug_num].status = s;
++	i2c_dev->debug_num++;
++}
++
++static void bcm2835_debug_print_status(struct bcm2835_i2c_dev *i2c_dev,
++				       struct bcm2835_debug *d)
++{
++	u32 s = d->status;
++
++	pr_info("isr: remain=%zu, status=0x%x : %s%s%s%s%s%s%s%s%s%s [i2c%d]\n",
++		d->remain, s,
++		s & BCM2835_I2C_S_TA ? "TA " : "",
++		s & BCM2835_I2C_S_DONE ? "DONE " : "",
++		s & BCM2835_I2C_S_TXW ? "TXW " : "",
++		s & BCM2835_I2C_S_RXR ? "RXR " : "",
++		s & BCM2835_I2C_S_TXD ? "TXD " : "",
++		s & BCM2835_I2C_S_RXD ? "RXD " : "",
++		s & BCM2835_I2C_S_TXE ? "TXE " : "",
++		s & BCM2835_I2C_S_RXF ? "RXF " : "",
++		s & BCM2835_I2C_S_ERR ? "ERR " : "",
++		s & BCM2835_I2C_S_CLKT ? "CLKT " : "",
++		i2c_dev->adapter.nr);
++}
++
++static void bcm2835_debug_print_msg(struct bcm2835_i2c_dev *i2c_dev,
++				    struct i2c_msg *msg, int i, int total,
++				    const char *fname)
++{
++	pr_info("%s: msg(%d/%d) %s addr=0x%02x, len=%u flags=%s%s%s%s%s%s%s [i2c%d]\n",
++		fname, i, total,
++		msg->flags & I2C_M_RD ? "read" : "write", msg->addr, msg->len,
++		msg->flags & I2C_M_TEN ? "TEN" : "",
++		msg->flags & I2C_M_RECV_LEN ? "RECV_LEN" : "",
++		msg->flags & I2C_M_NO_RD_ACK ? "NO_RD_ACK" : "",
++		msg->flags & I2C_M_IGNORE_NAK ? "IGNORE_NAK" : "",
++		msg->flags & I2C_M_REV_DIR_ADDR ? "REV_DIR_ADDR" : "",
++		msg->flags & I2C_M_NOSTART ? "NOSTART" : "",
++		msg->flags & I2C_M_STOP ? "STOP" : "",
++		i2c_dev->adapter.nr);
++}
++
++static void bcm2835_debug_print(struct bcm2835_i2c_dev *i2c_dev)
++{
++	struct bcm2835_debug *d;
++	unsigned int i;
++
++	for (i = 0; i < i2c_dev->debug_num; i++) {
++		d = &i2c_dev->debug[i];
++		if (d->status == ~0)
++			bcm2835_debug_print_msg(i2c_dev, d->msg, d->msg_idx,
++				i2c_dev->debug_num_msgs, "start_transfer");
++		else
++			bcm2835_debug_print_status(i2c_dev, d);
++	}
++	if (i2c_dev->debug_num >= BCM2835_DEBUG_MAX)
++		pr_info("BCM2835_DEBUG_MAX reached\n");
++}
++
+ static inline void bcm2835_i2c_writel(struct bcm2835_i2c_dev *i2c_dev,
+ 				      u32 reg, u32 val)
+ {
+@@ -257,6 +339,7 @@ static void bcm2835_i2c_start_transfer(s
+ 	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_A, msg->addr);
+ 	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_DLEN, msg->len);
+ 	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_C, c);
++	bcm2835_debug_add(i2c_dev, ~0);
+ }
+ 
+ static void bcm2835_i2c_finish_transfer(struct bcm2835_i2c_dev *i2c_dev)
+@@ -283,6 +366,7 @@ static irqreturn_t bcm2835_i2c_isr(int t
+ 	u32 val, err;
+ 
+ 	val = bcm2835_i2c_readl(i2c_dev, BCM2835_I2C_S);
++	bcm2835_debug_add(i2c_dev, val);
+ 
+ 	err = val & (BCM2835_I2C_S_CLKT | BCM2835_I2C_S_ERR);
+ 	if (err) {
+@@ -349,6 +433,13 @@ static int bcm2835_i2c_xfer(struct i2c_a
+ 	unsigned long time_left;
+ 	int i;
+ 
++	if (debug)
++		i2c_dev->debug_num_msgs = num;
++
++	if (debug > 2)
++		for (i = 0; i < num; i++)
++			bcm2835_debug_print_msg(i2c_dev, &msgs[i], i + 1, num, __func__);
++
+ 	for (i = 0; i < (num - 1); i++)
+ 		if (msgs[i].flags & I2C_M_RD) {
+ 			dev_warn_once(i2c_dev->dev,
+@@ -367,6 +458,10 @@ static int bcm2835_i2c_xfer(struct i2c_a
+ 
+ 	bcm2835_i2c_finish_transfer(i2c_dev);
+ 
++	if (debug > 1 || (debug && (!time_left || i2c_dev->msg_err)))
++		bcm2835_debug_print(i2c_dev);
++	i2c_dev->debug_num_msgs = 0;
++	i2c_dev->debug_num = 0;
+ 	if (!time_left) {
+ 		bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_C,
+ 				   BCM2835_I2C_C_CLEAR);
+@@ -377,7 +472,9 @@ static int bcm2835_i2c_xfer(struct i2c_a
+ 	if (!i2c_dev->msg_err)
+ 		return num;
+ 
+-	dev_dbg(i2c_dev->dev, "i2c transfer failed: %x\n", i2c_dev->msg_err);
++	if (debug)
++		dev_err(i2c_dev->dev, "i2c transfer failed: %x\n",
++			i2c_dev->msg_err);
+ 
+ 	if (i2c_dev->msg_err & BCM2835_I2C_S_ERR)
+ 		return -EREMOTEIO;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0054-irqchip-irq-bcm2836-Remove-regmap-and-syscon-use.patch b/target/linux/bcm27xx/patches-5.15/950-0054-irqchip-irq-bcm2836-Remove-regmap-and-syscon-use.patch
new file mode 100644
index 0000000000..3de9c783c4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0054-irqchip-irq-bcm2836-Remove-regmap-and-syscon-use.patch
@@ -0,0 +1,112 @@
+From a27ad8b9cf6ad18b033fe9e34be3a1de3bea6c69 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 23 Jan 2018 16:52:45 +0000
+Subject: [PATCH] irqchip: irq-bcm2836: Remove regmap and syscon use
+
+The syscon node defines a register range that duplicates that used by
+the local_intc node on bcm2836/7. Since irq-bcm2835 and irq-bcm2836 are
+built in and always present together (both drivers are enabled by
+CONFIG_ARCH_BCM2835), it is possible to replace the syscon usage with a
+global variable that simplifies the code. Doing so does lose the
+locking provided by regmap, but as only one side is using the regmap
+interface (irq-bcm2835 uses readl and write) there is no loss of
+atomicity.
+
+See: https://github.com/raspberrypi/firmware/issues/926
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/irqchip/irq-bcm2835.c | 32 ++++++++++++--------------------
+ drivers/irqchip/irq-bcm2836.c |  5 +++++
+ 2 files changed, 17 insertions(+), 20 deletions(-)
+
+--- a/drivers/irqchip/irq-bcm2835.c
++++ b/drivers/irqchip/irq-bcm2835.c
+@@ -41,8 +41,6 @@
+ #include <linux/of_irq.h>
+ #include <linux/irqchip.h>
+ #include <linux/irqdomain.h>
+-#include <linux/mfd/syscon.h>
+-#include <linux/regmap.h>
+ 
+ #include <asm/exception.h>
+ #include <asm/mach/irq.h>
+@@ -92,7 +90,7 @@ struct armctrl_ic {
+ 	void __iomem *enable[NR_BANKS];
+ 	void __iomem *disable[NR_BANKS];
+ 	struct irq_domain *domain;
+-	struct regmap *local_regmap;
++	void __iomem *local_base;
+ };
+ 
+ static struct armctrl_ic intc __read_mostly;
+@@ -129,24 +127,20 @@ static void armctrl_unmask_irq(struct ir
+ 	if (d->hwirq >= NUMBER_IRQS) {
+ 		if (num_online_cpus() > 1) {
+ 			unsigned int data;
+-			int ret;
+ 
+-			if (!intc.local_regmap) {
+-				pr_err("FIQ is disabled due to missing regmap\n");
++			if (!intc.local_base) {
++				pr_err("FIQ is disabled due to missing arm_local_intc\n");
+ 				return;
+ 			}
+ 
+-			ret = regmap_read(intc.local_regmap,
+-					  ARM_LOCAL_GPU_INT_ROUTING, &data);
+-			if (ret) {
+-				pr_err("Failed to read int routing %d\n", ret);
+-				return;
+-			}
++			data = readl_relaxed(intc.local_base +
++					     ARM_LOCAL_GPU_INT_ROUTING);
+ 
+ 			data &= ~0xc;
+ 			data |= (1 << 2);
+-			regmap_write(intc.local_regmap,
+-				     ARM_LOCAL_GPU_INT_ROUTING, data);
++			writel_relaxed(data,
++				       intc.local_base +
++				       ARM_LOCAL_GPU_INT_ROUTING);
+ 		}
+ 
+ 		writel_relaxed(REG_FIQ_ENABLE | hwirq_to_fiq(d->hwirq),
+@@ -246,12 +240,10 @@ static int __init armctrl_of_init(struct
+ 	}
+ 
+ 	if (is_2836) {
+-		intc.local_regmap =
+-			syscon_regmap_lookup_by_compatible("brcm,bcm2836-arm-local");
+-		if (IS_ERR(intc.local_regmap)) {
+-			pr_err("Failed to get local register map. FIQ is disabled for cpus > 1\n");
+-			intc.local_regmap = NULL;
+-		}
++		extern void __iomem * __attribute__((weak)) arm_local_intc;
++		intc.local_base = arm_local_intc;
++		if (!intc.local_base)
++			pr_err("Failed to get local intc base. FIQ is disabled for cpus > 1\n");
+ 	}
+ 
+ 	/* Make a duplicate irq range which is used to enable FIQ */
+--- a/drivers/irqchip/irq-bcm2836.c
++++ b/drivers/irqchip/irq-bcm2836.c
+@@ -22,6 +22,9 @@ struct bcm2836_arm_irqchip_intc {
+ 
+ static struct bcm2836_arm_irqchip_intc intc  __read_mostly;
+ 
++void __iomem *arm_local_intc;
++EXPORT_SYMBOL_GPL(arm_local_intc);
++
+ static void bcm2836_arm_irqchip_mask_per_cpu_irq(unsigned int reg_offset,
+ 						 unsigned int bit,
+ 						 int cpu)
+@@ -323,6 +326,8 @@ static int __init bcm2836_arm_irqchip_l1
+ 		panic("%pOF: unable to map local interrupt registers\n", node);
+ 	}
+ 
++	arm_local_intc = intc.base;
++
+ 	bcm2835_init_local_timer_frequency();
+ 
+ 	intc.domain = irq_domain_add_linear(node, LAST_IRQ + 1,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0055-lan78xx-Enable-LEDs-and-auto-negotiation.patch b/target/linux/bcm27xx/patches-5.15/950-0055-lan78xx-Enable-LEDs-and-auto-negotiation.patch
new file mode 100644
index 0000000000..47fbf510fa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0055-lan78xx-Enable-LEDs-and-auto-negotiation.patch
@@ -0,0 +1,49 @@
+From ec6fe1f3510a68ea742758b1cd806a5a08fed7ae Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 17 Oct 2017 15:04:29 +0100
+Subject: [PATCH] lan78xx: Enable LEDs and auto-negotiation
+
+For applications of the LAN78xx that don't have valid programmed
+EEPROMs or OTPs, enabling both LEDs and auto-negotiation by default
+seems reasonable.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/usb/lan78xx.c | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -2716,6 +2716,11 @@ static int lan78xx_reset(struct lan78xx_
+ 	int ret;
+ 	u32 buf;
+ 	u8 sig;
++	bool has_eeprom;
++	bool has_otp;
++
++	has_eeprom = !lan78xx_read_eeprom(dev, 0, 0, NULL);
++	has_otp = !lan78xx_read_otp(dev, 0, 0, NULL);
+ 
+ 	ret = lan78xx_read_reg(dev, HW_CFG, &buf);
+ 	if (ret < 0)
+@@ -2797,6 +2802,10 @@ static int lan78xx_reset(struct lan78xx_
+ 
+ 	buf |= HW_CFG_MEF_;
+ 
++	/* If no valid EEPROM and no valid OTP, enable the LEDs by default */
++	if (!has_eeprom && !has_otp)
++	    buf |= HW_CFG_LED0_EN_ | HW_CFG_LED1_EN_;
++
+ 	ret = lan78xx_write_reg(dev, HW_CFG, buf);
+ 	if (ret < 0)
+ 		return ret;
+@@ -2895,6 +2904,9 @@ static int lan78xx_reset(struct lan78xx_
+ 			buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
+ 		}
+ 	}
++	/* If no valid EEPROM and no valid OTP, enable AUTO negotiation */
++	if (!has_eeprom && !has_otp)
++	    buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
+ 	ret = lan78xx_write_reg(dev, MAC_CR, buf);
+ 	if (ret < 0)
+ 		return ret;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0056-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch b/target/linux/bcm27xx/patches-5.15/950-0056-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch
new file mode 100644
index 0000000000..cbb0c19aa5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0056-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch
@@ -0,0 +1,29 @@
+From da6e94edb85fc948357b4163b6ddaa9e75f5e0df Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 23 Feb 2016 17:26:48 +0000
+Subject: [PATCH] amba_pl011: Don't use DT aliases for numbering
+
+The pl011 driver looks for DT aliases of the form "serial<n>",
+and if found uses <n> as the device ID. This can cause
+/dev/ttyAMA0 to become /dev/ttyAMA1, which is confusing if the
+other serial port is provided by the 8250 driver which doesn't
+use the same logic.
+---
+ drivers/tty/serial/amba-pl011.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -2738,7 +2738,12 @@ static int pl011_setup_port(struct devic
+ 	if (IS_ERR(base))
+ 		return PTR_ERR(base);
+ 
++	/* Don't use DT serial<n> aliases - it causes the device to
++	   be renumbered to ttyAMA1 if it is the second serial port in the
++	   system, even though the other one is ttyS0. The 8250 driver
++	   doesn't use this logic, so always remains ttyS0.
+ 	index = pl011_probe_dt_alias(index, dev);
++	*/
+ 
+ 	uap->old_cr = 0;
+ 	uap->port.dev = dev;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0057-amba_pl011-Round-input-clock-up.patch b/target/linux/bcm27xx/patches-5.15/950-0057-amba_pl011-Round-input-clock-up.patch
new file mode 100644
index 0000000000..c1fc11f7fb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0057-amba_pl011-Round-input-clock-up.patch
@@ -0,0 +1,86 @@
+From 307744a359bddf354711e54836e4757788c9dfc4 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 1 Mar 2017 16:07:39 +0000
+Subject: [PATCH] amba_pl011: Round input clock up
+
+The UART clock is initialised to be as close to the requested
+frequency as possible without exceeding it. Now that there is a
+clock manager that returns the actual frequencies, an expected
+48MHz clock is reported as 47999625. If the requested baudrate
+== requested clock/16, there is no headroom and the slight
+reduction in actual clock rate results in failure.
+
+Detect cases where it looks like a "round" clock was chosen and
+adjust the reported clock to match that "round" value. As the
+code comment says:
+
+/*
+ * If increasing a clock by less than 0.1% changes it
+ * from ..999.. to ..000.., round up.
+ */
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/tty/serial/amba-pl011.c | 23 +++++++++++++++++++++--
+ 1 file changed, 21 insertions(+), 2 deletions(-)
+
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -1725,6 +1725,23 @@ static void pl011_put_poll_char(struct u
+ 
+ #endif /* CONFIG_CONSOLE_POLL */
+ 
++unsigned long pl011_clk_round(unsigned long clk)
++{
++	unsigned long scaler;
++
++	/*
++	 * If increasing a clock by less than 0.1% changes it
++	 * from ..999.. to ..000.., round up.
++	 */
++	scaler = 1;
++	while (scaler * 100000 < clk)
++		scaler *= 10;
++	if ((clk + scaler - 1)/scaler % 1000 == 0)
++		clk = (clk/scaler + 1) * scaler;
++
++	return clk;
++}
++
+ static int pl011_hwinit(struct uart_port *port)
+ {
+ 	struct uart_amba_port *uap =
+@@ -1741,7 +1758,7 @@ static int pl011_hwinit(struct uart_port
+ 	if (retval)
+ 		return retval;
+ 
+-	uap->port.uartclk = clk_get_rate(uap->clk);
++	uap->port.uartclk = pl011_clk_round(clk_get_rate(uap->clk));
+ 
+ 	/* Clear pending error and receive interrupts */
+ 	pl011_write(UART011_OEIS | UART011_BEIS | UART011_PEIS |
+@@ -2434,7 +2451,7 @@ static int pl011_console_setup(struct co
+ 			plat->init();
+ 	}
+ 
+-	uap->port.uartclk = clk_get_rate(uap->clk);
++	uap->port.uartclk = pl011_clk_round(clk_get_rate(uap->clk));
+ 
+ 	if (uap->vendor->fixed_options) {
+ 		baud = uap->fixed_baud;
+@@ -2651,6 +2668,7 @@ static struct uart_driver amba_reg = {
+ 	.cons			= AMBA_CONSOLE,
+ };
+ 
++#if 0
+ static int pl011_probe_dt_alias(int index, struct device *dev)
+ {
+ 	struct device_node *np;
+@@ -2682,6 +2700,7 @@ static int pl011_probe_dt_alias(int inde
+ 
+ 	return ret;
+ }
++#endif
+ 
+ /* unregisters the driver also if no more ports are left */
+ static void pl011_unregister_port(struct uart_amba_port *uap)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0058-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch b/target/linux/bcm27xx/patches-5.15/950-0058-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch
new file mode 100644
index 0000000000..adb5e0073f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0058-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch
@@ -0,0 +1,27 @@
+From 77673025dd2dab30832e4264bf8de9474a9b9142 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 29 Sep 2017 10:32:19 +0100
+Subject: [PATCH] amba_pl011: Insert mb() for correct FIFO handling
+
+The pl011 register accessor functions use the _relaxed versions of the
+standard readl() and writel() functions, meaning that there are no
+automatic memory barriers. When polling a FIFO status register to check
+for fullness, it is necessary to ensure that any outstanding writes have
+completed; otherwise the flags are effectively stale, making it possible
+that the next write is to a full FIFO.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/tty/serial/amba-pl011.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -1423,6 +1423,7 @@ static bool pl011_tx_char(struct uart_am
+ 		return false; /* unable to transmit character */
+ 
+ 	pl011_write(c, uap, REG_DR);
++	mb();
+ 	uap->port.icount.tx++;
+ 
+ 	return true;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0059-amba_pl011-Add-cts-event-workaround-DT-property.patch b/target/linux/bcm27xx/patches-5.15/950-0059-amba_pl011-Add-cts-event-workaround-DT-property.patch
new file mode 100644
index 0000000000..4ef26a10e3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0059-amba_pl011-Add-cts-event-workaround-DT-property.patch
@@ -0,0 +1,50 @@
+From decd99704aba1800c3e62a7ed1f5cbd9c5f6526a Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 29 Sep 2017 10:32:19 +0100
+Subject: [PATCH] amba_pl011: Add cts-event-workaround DT property
+
+The BCM2835 PL011 implementation seems to have a bug that can lead to a
+transmission lockup if CTS changes frequently. A workaround was added to
+the driver with a vendor-specific flag to enable it, but this flag is
+currently not set for ARM implementations.
+
+Add a "cts-event-workaround" property to Pi DTBs and use the presence
+of that property to force the flag to be enabled in the driver.
+
+See: https://github.com/raspberrypi/linux/issues/1280
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ Documentation/devicetree/bindings/serial/pl011.yaml | 6 ++++++
+ drivers/tty/serial/amba-pl011.c                     | 5 +++++
+ 2 files changed, 11 insertions(+)
+
+--- a/Documentation/devicetree/bindings/serial/pl011.yaml
++++ b/Documentation/devicetree/bindings/serial/pl011.yaml
+@@ -91,6 +91,12 @@ properties:
+       3000ms.
+     default: 3000
+ 
++  cts-event-workaround:
++    description:
++      Enables the (otherwise vendor-specific) workaround for the
++      CTS-induced TX lockup.
++    type: boolean
++
+ required:
+   - compatible
+   - reg
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -2829,6 +2829,11 @@ static int pl011_probe(struct amba_devic
+ 	if (IS_ERR(uap->clk))
+ 		return PTR_ERR(uap->clk);
+ 
++	if (of_property_read_bool(dev->dev.of_node, "cts-event-workaround")) {
++	    vendor->cts_event_workaround = true;
++	    dev_info(&dev->dev, "cts_event_workaround enabled\n");
++	}
++
+ 	uap->reg_offset = vendor->reg_offset;
+ 	uap->vendor = vendor;
+ 	uap->fifosize = vendor->get_fifosize(dev);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0060-tty-amba-pl011-Add-un-throttle-support.patch b/target/linux/bcm27xx/patches-5.15/950-0060-tty-amba-pl011-Add-un-throttle-support.patch
new file mode 100644
index 0000000000..db01441aa0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0060-tty-amba-pl011-Add-un-throttle-support.patch
@@ -0,0 +1,61 @@
+From 48cb6ac7067b412c56a0a6aca43f5c964dfb7dec Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 24 Jan 2020 11:38:28 +0000
+Subject: [PATCH] tty: amba-pl011: Add un/throttle support
+
+The PL011 driver lacks throttle and unthrottle methods. As a result,
+sending more data to the Pi than it can immediately sink while CRTSCTS
+is enabled causes a NULL pointer to be followed.
+
+Add a throttle handler that disables the RX interrupts, and an
+unthrottle handler that reenables them.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/tty/serial/amba-pl011.c | 28 ++++++++++++++++++++++++++++
+ 1 file changed, 28 insertions(+)
+
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -1360,6 +1360,32 @@ static void pl011_start_tx(struct uart_p
+ 		pl011_start_tx_pio(uap);
+ }
+ 
++static void pl011_throttle(struct uart_port *port)
++{
++	struct uart_amba_port *uap =
++	    container_of(port, struct uart_amba_port, port);
++	unsigned long flags;
++
++	spin_lock_irqsave(&uap->port.lock, flags);
++	uap->im &= ~(UART011_RTIM | UART011_RXIM);
++	pl011_write(uap->im, uap, REG_IMSC);
++	spin_unlock_irqrestore(&uap->port.lock, flags);
++}
++
++static void pl011_unthrottle(struct uart_port *port)
++{
++	struct uart_amba_port *uap =
++	    container_of(port, struct uart_amba_port, port);
++	unsigned long flags;
++
++	spin_lock_irqsave(&uap->port.lock, flags);
++	uap->im |= UART011_RTIM;
++	if (!pl011_dma_rx_running(uap))
++	    uap->im |= UART011_RXIM;
++	pl011_write(uap->im, uap, REG_IMSC);
++	spin_unlock_irqrestore(&uap->port.lock, flags);
++}
++
+ static void pl011_stop_rx(struct uart_port *port)
+ {
+ 	struct uart_amba_port *uap =
+@@ -2276,6 +2302,8 @@ static const struct uart_ops amba_pl011_
+ 	.stop_tx	= pl011_stop_tx,
+ 	.start_tx	= pl011_start_tx,
+ 	.stop_rx	= pl011_stop_rx,
++	.throttle	= pl011_throttle,
++	.unthrottle	= pl011_unthrottle,
+ 	.enable_ms	= pl011_enable_ms,
+ 	.break_ctl	= pl011_break_ctl,
+ 	.startup	= pl011_startup,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0061-tty-amba-pl011-Avoid-rare-write-when-full-error.patch b/target/linux/bcm27xx/patches-5.15/950-0061-tty-amba-pl011-Avoid-rare-write-when-full-error.patch
new file mode 100644
index 0000000000..c72eeb470e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0061-tty-amba-pl011-Avoid-rare-write-when-full-error.patch
@@ -0,0 +1,42 @@
+From db675d9894cea3a30ba50695a3e1ea9739782bd2 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 29 Jan 2020 09:35:19 +0000
+Subject: [PATCH] tty: amba-pl011: Avoid rare write-when-full error
+
+Under some circumstances on BCM283x processors data loss can be
+observed - a single byte missing from the TX output stream. These bytes
+are always the last byte of a batch of 8 written from pl011_tx_chars
+when from_irq is true, meaning that the FIFO full flag is not checked
+before writing.
+
+The transmit optimisation relies on the FIFO being half-empty when the
+TX interrupt is raised. Instrumenting the driver further showed that
+the failure case correlated with the TX FIFO full flag being set at the
+point where the last byte was written to the data register, which
+explains the data loss but not how the FIFO appeared to be prematurely
+full. A possible explanation is that a FIFO write was in flight at the
+time the interrupt was raised, but as yet there is no hypothesis as to
+how this might occur.
+
+In the absence of a clear understanding of the failure mechanism, avoid
+the problem by checking the FIFO levels before writing the last byte of
+the group, which will have minimal performance impact.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/tty/serial/amba-pl011.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -1510,6 +1510,10 @@ static bool pl011_tx_chars(struct uart_a
+ 		if (likely(from_irq) && count-- == 0)
+ 			break;
+ 
++		if (likely(from_irq) && count == 0 &&
++		    pl011_read(uap, REG_FR) & UART01x_FR_TXFF)
++			break;
++
+ 		if (!pl011_tx_char(uap, xmit->buf[xmit->tail], from_irq))
+ 			break;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0062-pinctrl-bcm2835-Set-base-to-0-give-expected-gpio-num.patch b/target/linux/bcm27xx/patches-5.15/950-0062-pinctrl-bcm2835-Set-base-to-0-give-expected-gpio-num.patch
new file mode 100644
index 0000000000..fd189a539b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0062-pinctrl-bcm2835-Set-base-to-0-give-expected-gpio-num.patch
@@ -0,0 +1,40 @@
+From 43913829405fae8dbc5362e40a2fddf2aac1ca45 Mon Sep 17 00:00:00 2001
+From: notro <notro@tronnes.org>
+Date: Thu, 10 Jul 2014 13:59:47 +0200
+Subject: [PATCH] pinctrl-bcm2835: Set base to 0 give expected gpio
+ numbering
+
+Signed-off-by: Noralf Tronnes <notro@tronnes.org>
+
+SQUASH: pinctrl: bcm2835: Set base for bcm2711 GPIO to 0
+
+Without this patch GPIOs don't seem to work properly, primarily
+noticeable as broken LEDs.
+
+Squash with "pinctrl-bcm2835: Set base to 0 give expected gpio numbering"
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -362,7 +362,7 @@ static const struct gpio_chip bcm2835_gp
+ 	.get = bcm2835_gpio_get,
+ 	.set = bcm2835_gpio_set,
+ 	.set_config = gpiochip_generic_config,
+-	.base = -1,
++	.base = 0,
+ 	.ngpio = BCM2835_NUM_GPIOS,
+ 	.can_sleep = false,
+ };
+@@ -378,7 +378,7 @@ static const struct gpio_chip bcm2711_gp
+ 	.get = bcm2835_gpio_get,
+ 	.set = bcm2835_gpio_set,
+ 	.set_config = gpiochip_generic_config,
+-	.base = -1,
++	.base = 0,
+ 	.ngpio = BCM2711_NUM_GPIOS,
+ 	.can_sleep = false,
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0063-Main-bcm2708-bcm2709-linux-port.patch b/target/linux/bcm27xx/patches-5.15/950-0063-Main-bcm2708-bcm2709-linux-port.patch
new file mode 100644
index 0000000000..e69ecdffb0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0063-Main-bcm2708-bcm2709-linux-port.patch
@@ -0,0 +1,150 @@
+From 96f4f4fcf652beddd849cccb9546ad25ad36e7dd Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Sun, 12 May 2013 12:24:19 +0100
+Subject: [PATCH] Main bcm2708/bcm2709 linux port
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+bcm2709: Drop platform smp and timer init code
+
+irq-bcm2836 handles this through these functions:
+bcm2835_init_local_timer_frequency()
+bcm2836_arm_irqchip_smp_init()
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+bcm270x: Use watchdog for reboot/poweroff
+
+The watchdog driver already has support for reboot/poweroff.
+Make use of this and remove the code from the platform files.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+board_bcm2835: Remove coherent dma pool increase - API has gone
+---
+ arch/arm/mach-bcm/Kconfig         |  1 +
+ arch/arm/mm/proc-v6.S             | 15 ++++++++++++---
+ drivers/irqchip/irq-bcm2835.c     |  7 ++++++-
+ drivers/mailbox/bcm2835-mailbox.c | 18 ++++++++++++++++--
+ 4 files changed, 35 insertions(+), 6 deletions(-)
+
+--- a/arch/arm/mach-bcm/Kconfig
++++ b/arch/arm/mach-bcm/Kconfig
+@@ -166,6 +166,7 @@ config ARCH_BCM2835
+ 	select PINCTRL
+ 	select PINCTRL_BCM2835
+ 	select MFD_CORE
++	select MFD_SYSCON if ARCH_MULTI_V7
+ 	help
+ 	  This enables support for the Broadcom BCM2711 and BCM283x SoCs.
+ 	  This SoC is used in the Raspberry Pi and Roku 2 devices.
+--- a/arch/arm/mm/proc-v6.S
++++ b/arch/arm/mm/proc-v6.S
+@@ -70,10 +70,19 @@ ENDPROC(cpu_v6_reset)
+  *
+  *	IRQs are already disabled.
+  */
++
++/* See jira SW-5991 for details of this workaround */
+ ENTRY(cpu_v6_do_idle)
+-	mov	r1, #0
+-	mcr	p15, 0, r1, c7, c10, 4		@ DWB - WFI may enter a low-power mode
+-	mcr	p15, 0, r1, c7, c0, 4		@ wait for interrupt
++	.align 5
++	mov     r1, #2
++1:	subs	r1, #1
++	nop
++	mcreq	p15, 0, r1, c7, c10, 4		@ DWB - WFI may enter a low-power mode
++	mcreq	p15, 0, r1, c7, c0, 4		@ wait for interrupt
++	nop
++	nop
++	nop
++	bne 1b
+ 	ret	lr
+ 
+ ENTRY(cpu_v6_dcache_clean_area)
+--- a/drivers/irqchip/irq-bcm2835.c
++++ b/drivers/irqchip/irq-bcm2835.c
+@@ -43,7 +43,9 @@
+ #include <linux/irqdomain.h>
+ 
+ #include <asm/exception.h>
++#ifndef CONFIG_ARM64
+ #include <asm/mach/irq.h>
++#endif
+ 
+ /* Put the bank and irq (32 bits) into the hwirq */
+ #define MAKE_HWIRQ(b, n)	(((b) << 5) | (n))
+@@ -72,6 +74,7 @@
+ #define NR_BANKS		3
+ #define IRQS_PER_BANK		32
+ #define NUMBER_IRQS		MAKE_HWIRQ(NR_BANKS, 0)
++#undef FIQ_START
+ #define FIQ_START		(NR_IRQS_BANK0 + MAKE_HWIRQ(NR_BANKS - 1, 0))
+ 
+ static const int reg_pending[] __initconst = { 0x00, 0x04, 0x08 };
+@@ -253,10 +256,12 @@ static int __init armctrl_of_init(struct
+ 					MAKE_HWIRQ(b, i) + NUMBER_IRQS);
+ 			BUG_ON(irq <= 0);
+ 			irq_set_chip(irq, &armctrl_chip);
+-			set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
++			irq_set_probe(irq);
+ 		}
+ 	}
++#ifndef CONFIG_ARM64
+ 	init_FIQ(FIQ_START);
++#endif
+ 
+ 	return 0;
+ }
+--- a/drivers/mailbox/bcm2835-mailbox.c
++++ b/drivers/mailbox/bcm2835-mailbox.c
+@@ -45,12 +45,15 @@
+ #define MAIL1_WRT	(ARM_0_MAIL1 + 0x00)
+ #define MAIL1_STA	(ARM_0_MAIL1 + 0x18)
+ 
++/* On ARCH_BCM270x these come through <linux/interrupt.h> (arm_control.h ) */
++#ifndef ARM_MS_FULL
+ /* Status register: FIFO state. */
+ #define ARM_MS_FULL		BIT(31)
+ #define ARM_MS_EMPTY		BIT(30)
+ 
+ /* Configuration register: Enable interrupts. */
+ #define ARM_MC_IHAVEDATAIRQEN	BIT(0)
++#endif
+ 
+ struct bcm2835_mbox {
+ 	void __iomem *regs;
+@@ -145,7 +148,7 @@ static int bcm2835_mbox_probe(struct pla
+ 		return -ENOMEM;
+ 	spin_lock_init(&mbox->lock);
+ 
+-	ret = devm_request_irq(dev, irq_of_parse_and_map(dev->of_node, 0),
++	ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
+ 			       bcm2835_mbox_irq, 0, dev_name(dev), mbox);
+ 	if (ret) {
+ 		dev_err(dev, "Failed to register a mailbox IRQ handler: %d\n",
+@@ -194,7 +197,18 @@ static struct platform_driver bcm2835_mb
+ 	},
+ 	.probe		= bcm2835_mbox_probe,
+ };
+-module_platform_driver(bcm2835_mbox_driver);
++
++static int __init bcm2835_mbox_init(void)
++{
++	return platform_driver_register(&bcm2835_mbox_driver);
++}
++arch_initcall(bcm2835_mbox_init);
++
++static void __init bcm2835_mbox_exit(void)
++{
++	platform_driver_unregister(&bcm2835_mbox_driver);
++}
++module_exit(bcm2835_mbox_exit);
+ 
+ MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>");
+ MODULE_DESCRIPTION("BCM2835 mailbox IPC driver");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0064-Add-dwc_otg-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0064-Add-dwc_otg-driver.patch
new file mode 100644
index 0000000000..e3ac41496b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0064-Add-dwc_otg-driver.patch
@@ -0,0 +1,61618 @@
+From 81cb0a202a30580ee9ebb79621d1d8c1c613c491 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 1 May 2013 19:46:17 +0100
+Subject: [PATCH] Add dwc_otg driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+
+usb: dwc: fix lockdep false positive
+
+Signed-off-by: Kari Suvanto <karis79@gmail.com>
+
+usb: dwc: fix inconsistent lock state
+
+Signed-off-by: Kari Suvanto <karis79@gmail.com>
+
+Add FIQ patch to dwc_otg driver. Enable with dwc_otg.fiq_fix_enable=1. Should give about 10% more ARM performance.
+Thanks to Gordon and Costas
+
+Avoid dynamic memory allocation for channel lock in USB driver. Thanks ddv2005.
+
+Add NAK holdoff scheme. Enabled by default, disable with dwc_otg.nak_holdoff_enable=0. Thanks gsh
+
+Make sure we wait for the reset to finish
+
+dwc_otg: fix bug in dwc_otg_hcd.c resulting in silent kernel
+	 memory corruption, escalating to OOPS under high USB load.
+
+dwc_otg: Fix unsafe access of QTD during URB enqueue
+
+In dwc_otg_hcd_urb_enqueue during qtd creation, it was possible that the
+transaction could complete almost immediately after the qtd was assigned
+to a host channel during URB enqueue, which meant the qtd pointer was no
+longer valid having been completed and removed. Usually, this resulted in
+an OOPS during URB submission. By predetermining whether transactions
+need to be queued or not, this unsafe pointer access is avoided.
+
+This bug was only evident on the Pi model A where a device was attached
+that had no periodic endpoints (e.g. USB pendrive or some wlan devices).
+
+dwc_otg: Fix incorrect URB allocation error handling
+
+If the memory allocation for a dwc_otg_urb failed, the kernel would OOPS
+because for some reason a member of the *unallocated* struct was set to
+zero. Error handling changed to fail correctly.
+
+dwc_otg: fix potential use-after-free case in interrupt handler
+
+If a transaction had previously aborted, certain interrupts are
+enabled to track error counts and reset where necessary. On IN
+endpoints the host generates an ACK interrupt near-simultaneously
+with completion of transfer. In the case where this transfer had
+previously had an error, this results in a use-after-free on
+the QTD memory space with a 1-byte length being overwritten to
+0x00.
+
+dwc_otg: add handling of SPLIT transaction data toggle errors
+
+Previously a data toggle error on packets from a USB1.1 device behind
+a TT would result in the Pi locking up as the driver never handled
+the associated interrupt. Patch adds basic retry mechanism and
+interrupt acknowledgement to cater for either a chance toggle error or
+for devices that have a broken initial toggle state (FT8U232/FT232BM).
+
+dwc_otg: implement tasklet for returning URBs to usbcore hcd layer
+
+The dwc_otg driver interrupt handler for transfer completion will spend
+a very long time with interrupts disabled when a URB is completed -
+this is because usb_hcd_giveback_urb is called from within the handler
+which for a USB device driver with complicated processing (e.g. webcam)
+will take an exorbitant amount of time to complete. This results in
+missed completion interrupts for other USB packets which lead to them
+being dropped due to microframe overruns.
+
+This patch splits returning the URB to the usb hcd layer into a
+high-priority tasklet. This will have most benefit for isochronous IN
+transfers but will also have incidental benefit where multiple periodic
+devices are active at once.
+
+dwc_otg: fix NAK holdoff and allow on split transactions only
+
+This corrects a bug where if a single active non-periodic endpoint
+had at least one transaction in its qh, on frnum == MAX_FRNUM the qh
+would get skipped and never get queued again. This would result in
+a silent device until error detection (automatic or otherwise) would
+either reset the device or flush and requeue the URBs.
+
+Additionally the NAK holdoff was enabled for all transactions - this
+would potentially stall a HS endpoint for 1ms if a previous error state
+enabled this interrupt and the next response was a NAK. Fix so that
+only split transactions get held off.
+
+dwc_otg: Call usb_hcd_unlink_urb_from_ep with lock held in completion handler
+
+usb_hcd_unlink_urb_from_ep must be called with the HCD lock held.  Calling it
+asynchronously in the tasklet was not safe (regression in
+c4564d4a1a0a9b10d4419e48239f5d99e88d2667).
+
+This change unlinks it from the endpoint prior to queueing it for handling in
+the tasklet, and also adds a check to ensure the urb is OK to be unlinked
+before doing so.
+
+NULL pointer dereference kernel oopses had been observed in usb_hcd_giveback_urb
+when a USB device was unplugged/replugged during data transfer.  This effect
+was reproduced using automated USB port power control, hundreds of replug
+events were performed during active transfers to confirm that the problem was
+eliminated.
+
+USB fix using a FIQ to implement split transactions
+
+This commit adds a FIQ implementaion that schedules
+the split transactions using a FIQ so we don't get
+held off by the interrupt latency of Linux
+
+dwc_otg: fix device attributes and avoid kernel warnings on boot
+
+dcw_otg: avoid logging function that can cause panics
+
+See: https://github.com/raspberrypi/firmware/issues/21
+Thanks to cleverca22 for fix
+
+dwc_otg: mask correct interrupts after transaction error recovery
+
+The dwc_otg driver will unmask certain interrupts on a transaction
+that previously halted in the error state in order to reset the
+QTD error count. The various fine-grained interrupt handlers do not
+consider that other interrupts besides themselves were unmasked.
+
+By disabling the two other interrupts only ever enabled in DMA mode
+for this purpose, we can avoid unnecessary function calls in the
+IRQ handler. This will also prevent an unneccesary FIQ interrupt
+from being generated if the FIQ is enabled.
+
+dwc_otg: fiq: prevent FIQ thrash and incorrect state passing to IRQ
+
+In the case of a transaction to a device that had previously aborted
+due to an error, several interrupts are enabled to reset the error
+count when a device responds. This has the side-effect of making the
+FIQ thrash because the hardware will generate multiple instances of
+a NAK on an IN bulk/interrupt endpoint and multiple instances of ACK
+on an OUT bulk/interrupt endpoint. Make the FIQ mask and clear the
+associated interrupts.
+
+Additionally, on non-split transactions make sure that only unmasked
+interrupts are cleared. This caused a hard-to-trigger but serious
+race condition when you had the combination of an endpoint awaiting
+error recovery and a transaction completed on an endpoint - due to
+the sequencing and timing of interrupts generated by the dwc_otg core,
+it was possible to confuse the IRQ handler.
+
+Fix function tracing
+
+dwc_otg: whitespace cleanup in dwc_otg_urb_enqueue
+
+dwc_otg: prevent OOPSes during device disconnects
+
+The dwc_otg_urb_enqueue function is thread-unsafe. In particular the
+access of urb->hcpriv, usb_hcd_link_urb_to_ep, dwc_otg_urb->qtd and
+friends does not occur within a critical section and so if a device
+was unplugged during activity there was a high chance that the
+usbcore hub_thread would try to disable the endpoint with partially-
+formed entries in the URB queue. This would result in BUG() or null
+pointer dereferences.
+
+Fix so that access of urb->hcpriv, enqueuing to the hardware and
+adding to usbcore endpoint URB lists is contained within a single
+critical section.
+
+dwc_otg: prevent BUG() in TT allocation if hub address is > 16
+
+A fixed-size array is used to track TT allocation. This was
+previously set to 16 which caused a crash because
+dwc_otg_hcd_allocate_port would read past the end of the array.
+
+This was hit if a hub was plugged in which enumerated as addr > 16,
+due to previous device resets or unplugs.
+
+Also add #ifdef FIQ_DEBUG around hcd->hub_port_alloc[], which grows
+to a large size if 128 hub addresses are supported. This field is
+for debug only for tracking which frame an allocate happened in.
+
+dwc_otg: make channel halts with unknown state less damaging
+
+If the IRQ received a channel halt interrupt through the FIQ
+with no other bits set, the IRQ would not release the host
+channel and never complete the URB.
+
+Add catchall handling to treat as a transaction error and retry.
+
+dwc_otg: fiq_split: use TTs with more granularity
+
+This fixes certain issues with split transaction scheduling.
+
+- Isochronous multi-packet OUT transactions now hog the TT until
+  they are completed - this prevents hubs aborting transactions
+  if they get a periodic start-split out-of-order
+- Don't perform TT allocation on non-periodic endpoints - this
+  allows simultaneous use of the TT's bulk/control and periodic
+  transaction buffers
+
+This commit will mainly affect USB audio playback.
+
+dwc_otg: fix potential sleep while atomic during urb enqueue
+
+Fixes a regression introduced with eb1b482a. Kmalloc called from
+dwc_otg_hcd_qtd_add / dwc_otg_hcd_qtd_create did not always have
+the GPF_ATOMIC flag set. Force this flag when inside the larger
+critical section.
+
+dwc_otg: make fiq_split_enable imply fiq_fix_enable
+
+Failing to set up the FIQ correctly would result in
+"IRQ 32: nobody cared" errors in dmesg.
+
+dwc_otg: prevent crashes on host port disconnects
+
+Fix several issues resulting in crashes or inconsistent state
+if a Model A root port was disconnected.
+
+- Clean up queue heads properly in kill_urbs_in_qh_list by
+  removing the empty QHs from the schedule lists
+- Set the halt status properly to prevent IRQ handlers from
+  using freed memory
+- Add fiq_split related cleanup for saved registers
+- Make microframe scheduling reclaim host channels if
+  active during a disconnect
+- Abort URBs with -ESHUTDOWN status response, informing
+  device drivers so they respond in a more correct fashion
+  and don't try to resubmit URBs
+- Prevent IRQ handlers from attempting to handle channel
+  interrupts if the associated URB was dequeued (and the
+  driver state was cleared)
+
+dwc_otg: prevent leaking URBs during enqueue
+
+A dwc_otg_urb would get leaked if the HCD enqueue function
+failed for any reason. Free the URB at the appropriate points.
+
+dwc_otg: Enable NAK holdoff for control split transactions
+
+Certain low-speed devices take a very long time to complete a
+data or status stage of a control transaction, producing NAK
+responses until they complete internal processing - the USB2.0
+spec limit is up to 500mS. This causes the same type of interrupt
+storm as seen with USB-serial dongles prior to c8edb238.
+
+In certain circumstances, usually while booting, this interrupt
+storm could cause SD card timeouts.
+
+dwc_otg: Fix for occasional lockup on boot when doing a USB reset
+
+dwc_otg: Don't issue traffic to LS devices in FS mode
+
+Issuing low-speed packets when the root port is in full-speed mode
+causes the root port to stop responding. Explicitly fail when
+enqueuing URBs to a LS endpoint on a FS bus.
+
+Fix ARM architecture issue with local_irq_restore()
+
+If local_fiq_enable() is called before a local_irq_restore(flags) where
+the flags variable has the F bit set, the FIQ will be erroneously disabled.
+
+Fixup arch_local_irq_restore to avoid trampling the F bit in CPSR.
+
+Also fix some of the hacks previously implemented for previous dwc_otg
+incarnations.
+
+dwc_otg: fiq_fsm: Base commit for driver rewrite
+
+This commit removes the previous FIQ fixes entirely and adds fiq_fsm.
+
+This rewrite features much more complete support for split transactions
+and takes into account several OTG hardware bugs. High-speed
+isochronous transactions are also capable of being performed by fiq_fsm.
+
+All driver options have been removed and replaced with:
+  - dwc_otg.fiq_enable (bool)
+  - dwc_otg.fiq_fsm_enable (bool)
+  - dwc_otg.fiq_fsm_mask (bitmask)
+  - dwc_otg.nak_holdoff (unsigned int)
+
+Defaults are specified such that fiq_fsm behaves similarly to the
+previously implemented FIQ fixes.
+
+fiq_fsm: Push error recovery into the FIQ when fiq_fsm is used
+
+If the transfer associated with a QTD failed due to a bus error, the HCD
+would retry the transfer up to 3 times (implementing the USB2.0
+three-strikes retry in software).
+
+Due to the masking mechanism used by fiq_fsm, it is only possible to pass
+a single interrupt through to the HCD per-transfer.
+
+In this instance host channels would fall off the radar because the error
+reset would function, but the subsequent channel halt would be lost.
+
+Push the error count reset into the FIQ handler.
+
+fiq_fsm: Implement timeout mechanism
+
+For full-speed endpoints with a large packet size, interrupt latency
+runs the risk of the FIQ starting a transaction too late in a full-speed
+frame. If the device is still transmitting data when EOF2 for the
+downstream frame occurs, the hub will disable the port. This change is
+not reflected in the hub status endpoint and the device becomes
+unresponsive.
+
+Prevent high-bandwidth transactions from being started too late in a
+frame. The mechanism is not guaranteed: a combination of bit stuffing
+and hub latency may still result in a device overrunning.
+
+fiq_fsm: fix bounce buffer utilisation for Isochronous OUT
+
+Multi-packet isochronous OUT transactions were subject to a few bounday
+bugs. Fix them.
+
+Audio playback is now much more robust: however, an issue stands with
+devices that have adaptive sinks - ALSA plays samples too fast.
+
+dwc_otg: Return full-speed frame numbers in HS mode
+
+The frame counter increments on every *microframe* in high-speed mode.
+Most device drivers expect this number to be in full-speed frames - this
+caused considerable confusion to e.g. snd_usb_audio which uses the
+frame counter to estimate the number of samples played.
+
+fiq_fsm: save PID on completion of interrupt OUT transfers
+
+Also add edge case handling for interrupt transports.
+
+Note that for periodic split IN, data toggles are unimplemented in the
+OTG host hardware - it unconditionally accepts any PID.
+
+fiq_fsm: add missing case for fiq_fsm_tt_in_use()
+
+Certain combinations of bitrate and endpoint activity could
+result in a periodic transaction erroneously getting started
+while the previous Isochronous OUT was still active.
+
+fiq_fsm: clear hcintmsk for aborted transactions
+
+Prevents the FIQ from erroneously handling interrupts
+on a timed out channel.
+
+fiq_fsm: enable by default
+
+fiq_fsm: fix dequeues for non-periodic split transactions
+
+If a dequeue happened between the SSPLIT and CSPLIT phases of the
+transaction, the HCD would never receive an interrupt.
+
+fiq_fsm: Disable by default
+
+fiq_fsm: Handle HC babble errors
+
+The HCTSIZ transfer size field raises a babble interrupt if
+the counter wraps. Handle the resulting interrupt in this case.
+
+dwc_otg: fix interrupt registration for fiq_enable=0
+
+Additionally make the module parameter conditional for wherever
+hcd->fiq_state is touched.
+
+fiq_fsm: Enable by default
+
+dwc_otg: Fix various issues with root port and transaction errors
+
+Process the host port interrupts correctly (and don't trample them).
+Root port hotplug now functional again.
+
+Fix a few thinkos with the transaction error passthrough for fiq_fsm.
+
+fiq_fsm: Implement hack for Split Interrupt transactions
+
+Hubs aren't too picky about which endpoint we send Control type split
+transactions to. By treating Interrupt transfers as Control, it is
+possible to use the non-periodic queue in the OTG core as well as the
+non-periodic FIFOs in the hub itself. This massively reduces the
+microframe exclusivity/contention that periodic split transactions
+otherwise have to enforce.
+
+It goes without saying that this is a fairly egregious USB specification
+violation, but it works.
+
+Original idea by Hans Petter Selasky @ FreeBSD.org.
+
+dwc_otg: FIQ support on SMP. Set up FIQ stack and handler on Core 0 only.
+
+dwc_otg: introduce fiq_fsm_spin(un|)lock()
+
+SMP safety for the FIQ relies on register read-modify write cycles being
+completed in the correct order. Several places in the DWC code modify
+registers also touched by the FIQ. Protect these by a bare-bones lock
+mechanism.
+
+This also makes it possible to run the FIQ and IRQ handlers on different
+cores.
+
+fiq_fsm: fix build on bcm2708 and bcm2709 platforms
+
+dwc_otg: put some barriers back where they should be for UP
+
+bcm2709/dwc_otg: Setup FIQ on core 1 if >1 core active
+
+dwc_otg: fixup read-modify-write in critical paths
+
+Be more careful about read-modify-write on registers that the FIQ
+also touches.
+
+Guard fiq_fsm_spin_lock with fiq_enable check
+
+fiq_fsm: Falling out of the state machine isn't fatal
+
+This edge case can be hit if the port is disabled while the FIQ is
+in the middle of a transaction. Make the effects less severe.
+
+Also get rid of the useless return value.
+
+squash: dwc_otg: Allow to build without SMP
+
+usb: core: make overcurrent messages more prominent
+
+Hub overcurrent messages are more serious than "debug". Increase loglevel.
+
+usb: dwc_otg: Don't use dma_to_virt()
+
+Commit 6ce0d20 changes dma_to_virt() which breaks this driver.
+Open code the old dma_to_virt() implementation to work around this.
+
+Limit the use of __bus_to_virt() to cases where transfer_buffer_length
+is set and transfer_buffer is not set. This is done to increase the
+chance that this driver will also work on ARCH_BCM2835.
+
+transfer_buffer should not be NULL if the length is set, but the
+comment in the code indicates that there are situations where this
+might happen. drivers/usb/isp1760/isp1760-hcd.c also has a similar
+comment pointing to a possible: 'usb storage / SCSI bug'.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dwc_otg: Fix crash when fiq_enable=0
+
+dwc_otg: fiq_fsm: Make high-speed isochronous strided transfers work properly
+
+Certain low-bandwidth high-speed USB devices (specialist audio devices,
+compressed-frame webcams) have packet intervals > 1 microframe.
+
+Stride these transfers in the FIQ by using the start-of-frame interrupt
+to restart the channel at the right time.
+
+dwc_otg: Force host mode to fix incorrect compute module boards
+
+dwc_otg: Add ARCH_BCM2835 support
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dwc_otg: Simplify FIQ irq number code
+
+Dropping ATAGS means we can simplify the FIQ irq number code.
+Also add error checking on the returned irq number.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dwc_otg: Remove duplicate gadget probe/unregister function
+
+dwc_otg: Properly set the HFIR
+
+Douglas Anderson reported:
+
+According to the most up to date version of the dwc2 databook, the FRINT
+field of the HFIR register should be programmed to:
+* 125 us * (PHY clock freq for HS) - 1
+* 1000 us * (PHY clock freq for FS/LS) - 1
+
+This is opposed to older versions of the doc that claimed it should be:
+* 125 us * (PHY clock freq for HS)
+* 1000 us * (PHY clock freq for FS/LS)
+
+and reported lower timing jitter on a USB analyser
+
+dcw_otg: trim xfer length when buffer larger than allocated size is received
+
+dwc_otg: Don't free qh align buffers in atomic context
+
+dwc_otg: Enable the hack for Split Interrupt transactions by default
+
+dwc_otg.fiq_fsm_mask=0xF has long been a suggestion for users with audio stutters or other USB bandwidth issues.
+So far we are aware of many success stories but no failure caused by this setting.
+Make it a default to learn more.
+
+See: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=70437
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+
+dwc_otg: Use kzalloc when suitable
+
+dwc_otg: Pass struct device to dma_alloc*()
+
+This makes it possible to get the bus address from Device Tree.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dwc_otg: fix summarize urb->actual_length for isochronous transfers
+
+Kernel does not copy input data of ISO transfers to userspace
+if actual_length is set only in ISO transfers and not summarized
+in urb->actual_length. Fixes raspberrypi/linux#903
+
+fiq_fsm: Use correct states when starting isoc OUT transfers
+
+In fiq_fsm_start_next_periodic() if an isochronous OUT transfer
+was selected, no regard was given as to whether this was a single-packet
+transfer or a multi-packet staged transfer.
+
+For single-packet transfers, this had the effect of repeatedly sending
+OUT packets with bogus data and lengths.
+
+Eventually if the channel was repeatedly enabled enough times, this
+would lock up the OTG core and no further bus transfers would happen.
+
+Set the FSM state up properly if we select a single-packet transfer.
+
+Fixes https://github.com/raspberrypi/linux/issues/1842
+
+dwc_otg: make nak_holdoff work as intended with empty queues
+
+If URBs reading from non-periodic split endpoints were dequeued and
+the last transfer from the endpoint was a NAK handshake, the resulting
+qh->nak_frame value was stale which would result in unnecessarily long
+polling intervals for the first subsequent transfer with a fresh URB.
+
+Fixup qh->nak_frame in dwc_otg_hcd_urb_dequeue and also guard against
+a case where a single URB is submitted to the endpoint, a NAK was
+received on the transfer immediately prior to receiving data and the
+device subsequently resubmits another URB past the qh->nak_frame interval.
+
+Fixes https://github.com/raspberrypi/linux/issues/1709
+
+dwc_otg: fix split transaction data toggle handling around dequeues
+
+See https://github.com/raspberrypi/linux/issues/1709
+
+Fix several issues regarding endpoint state when URBs are dequeued
+- If the HCD is disconnected, flush FIQ-enabled channels properly
+- Save the data toggle state for bulk endpoints if the last transfer
+  from an endpoint where URBs were dequeued returned a data packet
+- Reset hc->start_pkt_count properly in assign_and_init_hc()
+
+dwc_otg: fix several potential crash sources
+
+On root port disconnect events, the host driver state is cleared and
+in-progress host channels are forcibly stopped. This doesn't play
+well with the FIQ running in the background, so:
+- Guard the disconnect callback with both the host spinlock and FIQ
+  spinlock
+- Move qtd dereference in dwc_otg_handle_hc_fsm() after the early-out
+  so we don't dereference a qtd that has gone away
+- Turn catch-all BUG()s in dwc_otg_handle_hc_fsm() into warnings.
+
+dwc_otg: delete hcd->channel_lock
+
+The lock serves no purpose as it is only held while the HCD spinlock
+is already being held.
+
+dwc_otg: remove unnecessary dma-mode channel halts on disconnect interrupt
+
+Host channels are already halted in kill_urbs_in_qh_list() with the
+subsequent interrupt processing behaving as if the URB was dequeued
+via HCD callback.
+
+There's no need to clobber the host channel registers a second time
+as this exposes races between the driver and host channel resulting
+in hcd->free_hc_list becoming corrupted.
+
+dwcotg: Allow to build without FIQ on ARM64
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+
+dwc_otg: make periodic scheduling behave properly for FS buses
+
+If the root port is in full-speed mode, transfer times at 12mbit/s
+would be calculated but matched against high-speed quotas.
+
+Reinitialise hcd->frame_usecs[i] on each port enable event so that
+full-speed bandwidth can be tracked sensibly.
+
+Also, don't bother using the FIQ for transfers when in full-speed
+mode - at the slower bus speed, interrupt frequency is reduced by
+an order of magnitude.
+
+Related issue: https://github.com/raspberrypi/linux/issues/2020
+
+dwc_otg: fiq_fsm: Make isochronous compatibility checks work properly
+
+Get rid of the spammy printk and local pointer mangling.
+Also, there is a nominal benefit for using fiq_fsm for isochronous
+transfers in FS mode (~1.1k IRQs per second vs 2.1k IRQs per second)
+so remove the root port speed check.
+
+dwc_otg: add module parameter int_ep_interval_min
+
+Add a module parameter (defaulting to ignored) that clamps the polling rate
+of high-speed Interrupt endpoints to a minimum microframe interval.
+
+The parameter is modifiable at runtime as it is used when activating new
+endpoints (such as on device connect).
+
+dwc_otg: fiq_fsm: Add non-periodic TT exclusivity constraints
+
+Certain hub types do not discriminate between pipe direction (IN or OUT)
+when considering non-periodic transfers. Therefore these hubs get confused
+if multiple transfers are issued in different directions with the same
+device address and endpoint number.
+
+Constrain queuing non-periodic split transactions so they are performed
+serially in such cases.
+
+Related: https://github.com/raspberrypi/linux/issues/2024
+
+dwc_otg: Fixup change to DRIVER_ATTR interface
+
+dwc_otg: Fix compilation warnings
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+USB_DWCOTG: Disable building dwc_otg as a module (#2265)
+
+When dwc_otg is built as a module, build will fail with the following
+error:
+
+ERROR: "DWC_TASK_HI_SCHEDULE" [drivers/usb/host/dwc_otg/dwc_otg.ko] undefined!
+scripts/Makefile.modpost:91: recipe for target '__modpost' failed
+make[1]: *** [__modpost] Error 1
+Makefile:1199: recipe for target 'modules' failed
+make: *** [modules] Error 2
+
+Even if the error is solved by including the missing
+DWC_TASK_HI_SCHEDULE function, the kernel will panic when loading
+dwc_otg.
+
+As a workaround, simply prevent user from building dwc_otg as a module
+as the current kernel does not support it.
+
+See: https://github.com/raspberrypi/linux/issues/2258
+
+Signed-off-by: Malik Olivier Boussejra <malik@boussejra.com>
+
+dwc_otg: New timer API
+
+dwc_otg: Fix removed ACCESS_ONCE->READ_ONCE
+
+dwc_otg: don't unconditionally force host mode in dwc_otg_cil_init()
+
+Add the ability to disable force_host_mode for those that want to use
+dwc_otg in both device and host modes.
+
+dwc_otg: Fix a regression when dequeueing isochronous transfers
+
+In 282bed95 (dwc_otg: make nak_holdoff work as intended with empty queues)
+the dequeue mechanism was changed to leave FIQ-enabled transfers to run
+to completion - to avoid leaving hub TT buffers with stale packets lying
+around.
+
+This broke FIQ-accelerated isochronous transfers, as this then meant that
+dozens of transfers were performed after the dequeue function returned.
+
+Restore the state machine fence for isochronous transfers.
+
+fiq_fsm: rewind DMA pointer for OUT transactions that fail (#2288)
+
+See: https://github.com/raspberrypi/linux/issues/2140
+
+dwc_otg: add smp_mb() to prevent driver state corruption on boot
+
+Occasional crashes have been seen where the FIQ code dereferences
+invalid/random pointers immediately after being set up, leading to
+panic on boot.
+
+The crash occurs as the FIQ code races against hcd_init_fiq() and
+the hcd_init_fiq() code races against the outstanding memory stores
+from dwc_otg_hcd_init(). Use explicit barriers after touching
+driver state.
+
+usb: dwc_otg: fix memory corruption in dwc_otg driver
+
+[Upstream commit 51b1b6491752ac066ee8d32cc66042fcc955fef6]
+
+The move from the staging tree to the main tree exposed a
+longstanding memory corruption bug in the dwc2 driver. The
+reordering of the driver initialization caused the dwc2 driver
+to corrupt the initialization data of the sdhci driver on the
+Raspberry Pi platform, which made the bug show up.
+
+The error is in calling to_usb_device(hsotg->dev), since ->dev
+is not a member of struct usb_device. The easiest fix is to
+just remove the offending code, since it is not really needed.
+
+Thanks to Stephen Warren for tracking down the cause of this.
+
+Reported-by: Andre Heider <a.heider@gmail.com>
+Tested-by: Stephen Warren <swarren@wwwdotorg.org>
+Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+[lukas: port from upstream dwc2 to out-of-tree dwc_otg driver]
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+
+usb: dwb_otg: Fix unreachable switch statement warning
+
+This warning appears with GCC 7.3.0 from toolchains.bootlin.com:
+
+../drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c: In function ‘fiq_fsm_update_hs_isoc’:
+../drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c:595:61: warning: statement will never be executed [-Wswitch-unreachable]
+   st->hctsiz_copy.b.xfersize = nrpackets * st->hcchar_copy.b.mps;
+                                            ~~~~~~~~~~~~~~~~~^~~~
+
+Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
+
+dwc_otg: fiq_fsm: fix incorrect DMA register offset calculation
+
+Rationalise the offset and update all call sites.
+
+Fixes https://github.com/raspberrypi/linux/issues/2408
+
+dwc_otg: fix bug with port_addr assignment for single-TT hubs
+
+See https://github.com/raspberrypi/linux/issues/2734
+
+The "Hub Port" field in the split transaction packet was always set
+to 1 for single-TT hubs. The majority of single-TT hub products
+apparently ignore this field and broadcast to all downstream enabled
+ports, which masked the issue. A subset of hub devices apparently
+need the port number to be exact or split transactions will fail.
+
+usb: dwc_otg: Clean up build warnings on 64bit kernels
+
+No functional changes. Almost all are changes to logging lines.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+usb: dwc_otg: Use dma allocation for mphi dummy_send buffer
+
+The FIQ driver used a kzalloc'ed buffer for dummy_send,
+passing a kernel virtual address to the hardware block.
+The buffer is only ever used for a dummy read, so it
+should be harmless, but there is the chance that it will
+cause exceptions.
+
+Use a dma allocation so that we have a genuine bus address,
+and read from that.
+Free the allocation when done for good measure.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+dwc_otg: only do_split when we actually need to do a split
+
+The previous test would fail if the root port was in fullspeed mode
+and there was a hub between the FS device and the root port. While
+the transfer worked, the schedule mangling performed for high-speed
+split transfers would break leading to an 8ms polling interval.
+
+dwc_otg: fix locking around dequeueing and killing URBs
+
+kill_urbs_in_qh_list() is practically only ever called with the fiq lock
+already held, so don't spinlock twice in the case where we need to cancel
+an isochronous transfer.
+
+Also fix up a case where the global interrupt register could be read with
+the fiq lock not held.
+
+Fixes the deadlock seen in https://github.com/raspberrypi/linux/issues/2907
+
+ARM64/DWC_OTG: Port dwc_otg driver to ARM64
+
+In ARM64, the FIQ mechanism used by this driver is not current
+implemented.   As a workaround, reqular IRQ is used instead
+of FIQ.
+
+In a separate change, the IRQ-CPU mapping is round robined
+on ARM64 to increase concurrency and allow multiple interrupts
+to be serviced at a time.  This reduces the need for FIQ.
+
+Tests Run:
+
+This mechanism is most likely to break when multiple USB devices
+are attached at the same time.  So the system was tested under
+stress.
+
+Devices:
+
+1. USB Speakers playing back a FLAC audio through VLC
+   at 96KHz.(Higher then typically, but supported on my speakers).
+
+2. sftp transferring large files through the buildin ethernet
+   connection which is connected through USB.
+
+3. Keyboard and mouse attached and being used.
+
+Although I do occasionally hear some glitches, the music seems to
+play quite well.
+
+Signed-off-by: Michael Zoran <mzoran@crowfest.net>
+
+usb: dwc_otg: Clean up interrupt claiming code
+
+The FIQ/IRQ interrupt number identification code is scattered through
+the dwc_otg driver. Rationalise it, simplifying the code and solving
+an existing issue.
+
+See: https://github.com/raspberrypi/linux/issues/2612
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+dwc_otg: Choose appropriate IRQ handover strategy
+
+2711 has no MPHI peripheral, but the ARM Control block can fake
+interrupts. Use the size of the DTB "mphi" reg block to determine
+which is required.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+usb: host: dwc_otg: fix compiling in separate directory
+
+The dwc_otg Makefile does not respect the O=path argument correctly:
+include paths in CFLAGS are given relatively to object path, not source
+path. Compiling in a separate directory yields #include errors.
+
+Signed-off-by: Marek Behún <marek.behun@nic.cz>
+
+dwc_otg: use align_buf for small IN control transfers (#3150)
+
+The hardware will do a 4-byte write to memory on any IN packet received
+that is between 1 and 3 bytes long. This tramples memory in the uvcvideo
+driver, as it uses a sequence of 1- and 2-byte control transfers to
+query the min/max/range/step of each individual camera control and
+gives us buffers that are offsets into a struct.
+
+Catch small control transfers in the data phase and use the align_buf
+to bounce the correct number of bytes into the URB's buffer.
+
+In general, short packets on non-control endpoints should be OK as URBs
+should have enough buffer space for a wMaxPacket size transfer.
+
+See: https://github.com/raspberrypi/linux/issues/3148
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+
+dwc_otg: Declare DMA capability with HCD_DMA flag
+
+Following [1], USB controllers have to declare DMA capabilities in
+order for them to be used by adding the HCD_DMA flag to their hc_driver
+struct.
+
+[1] 7b81cb6bddd2 ("usb: add a HCD_DMA flag instead of guestimating DMA capabilities")
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+dwc_otg: checking the urb->transfer_buffer too early (#3332)
+
+After enable the HIGHMEM and VMSPLIT_3G, the dwc_otg driver doesn't
+work well on Pi2/3 boards with 1G physical ram. Users experience
+the failure when copying a file of 600M size to the USB stick. And
+at the same time, the dmesg shows:
+usb 1-1.1.2: reset high-speed USB device number 8 using dwc_otg
+sd 0:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
+blk_update_request: I/O error, dev sda, sector 3024048 op 0x1:(WRITE) flags 0x4000 phys_seg 15 prio class 0
+
+When this happens, the sg_buf sent to the driver is located in the
+highmem region, the usb_sg_init() in the core/message.c will leave
+transfer_buffer to NULL if the sg_buf is in highmem, but in the
+dwc_otg driver, it returns -EINVAL unconditionally if transfer_buffer
+is NULL.
+
+The driver can handle the situation of buffer to be NULL, if it is in
+DMA mode, it will convert an address from transfer_dma.
+
+But if the conversion fails or it is in the PIO mode, we should check
+buffer and return -EINVAL if it is NULL.
+
+BugLink: https://bugs.launchpad.net/bugs/1852510
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+dwc_otg: constrain endpoint max packet and transfer size on split IN
+
+The hcd would unconditionally set the transfer length to the endpoint
+packet size for non-isoc IN transfers. If the remaining buffer length
+was less than the length of returned data, random memory would get
+scribbled over, with bad effects if it crossed a page boundary.
+
+Force a babble error if this happens by limiting the max transfer size
+to the available buffer space. DMA will stop writing to memory on a
+babble condition.
+
+The hardware expects xfersize to be an integer multiple of maxpacket
+size, so override hcchar.b.mps as well.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+
+dwc_otg: fiq_fsm: pause when cancelling split transactions
+
+Non-periodic splits will DMA to/from the driver-provided transfer_buffer,
+which may be freed immediately after the dequeue call returns. Block until
+we know the transfer is complete.
+
+A similar delay is needed when cleaning up disconnects, as the FIQ could
+have started a periodic transfer in the previous microframe to the one
+that triggered a disconnect.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+
+dwc_otg: fiq_fsm: add a barrier on entry into FIQ handler(s)
+
+On BCM2835, there is no hardware guarantee that multiple outstanding
+reads to different peripherals will complete in-order. The FIQ code
+uses peripheral reads without barriers for performance, so in the case
+where a read to a slow peripheral was issued immediately prior to FIQ
+entry, the first peripheral read that the FIQ did could end up with
+wrong read data returned.
+
+Add dsb(sy) on entry so that all outstanding reads are retired.
+
+The FIQ only issues reads to the dwc_otg core, so per-read barriers
+in the handler itself are not required.
+
+On BCM2836 and BCM2837 the barrier is not strictly required due to
+differences in how the peripheral bus is implemented, but having
+arch-specific handlers that introduce different latencies is risky.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ arch/arm/include/asm/irqflags.h               |   16 +-
+ arch/arm/kernel/fiqasm.S                      |    4 +
+ drivers/usb/Makefile                          |    1 +
+ drivers/usb/core/generic.c                    |    1 +
+ drivers/usb/core/hub.c                        |    2 +-
+ drivers/usb/core/message.c                    |   79 +
+ drivers/usb/core/otg_productlist.h            |  114 +-
+ drivers/usb/gadget/file_storage.c             | 3676 +++++++++
+ drivers/usb/host/Kconfig                      |   10 +
+ drivers/usb/host/Makefile                     |    1 +
+ drivers/usb/host/dwc_common_port/Makefile     |   58 +
+ .../usb/host/dwc_common_port/Makefile.fbsd    |   17 +
+ .../usb/host/dwc_common_port/Makefile.linux   |   49 +
+ drivers/usb/host/dwc_common_port/changes.txt  |  174 +
+ .../usb/host/dwc_common_port/doc/doxygen.cfg  |  270 +
+ drivers/usb/host/dwc_common_port/dwc_cc.c     |  532 ++
+ drivers/usb/host/dwc_common_port/dwc_cc.h     |  224 +
+ .../host/dwc_common_port/dwc_common_fbsd.c    | 1308 +++
+ .../host/dwc_common_port/dwc_common_linux.c   | 1409 ++++
+ .../host/dwc_common_port/dwc_common_nbsd.c    | 1275 +++
+ drivers/usb/host/dwc_common_port/dwc_crypto.c |  308 +
+ drivers/usb/host/dwc_common_port/dwc_crypto.h |  111 +
+ drivers/usb/host/dwc_common_port/dwc_dh.c     |  291 +
+ drivers/usb/host/dwc_common_port/dwc_dh.h     |  106 +
+ drivers/usb/host/dwc_common_port/dwc_list.h   |  594 ++
+ drivers/usb/host/dwc_common_port/dwc_mem.c    |  245 +
+ drivers/usb/host/dwc_common_port/dwc_modpow.c |  636 ++
+ drivers/usb/host/dwc_common_port/dwc_modpow.h |   34 +
+ .../usb/host/dwc_common_port/dwc_notifier.c   |  319 +
+ .../usb/host/dwc_common_port/dwc_notifier.h   |  122 +
+ drivers/usb/host/dwc_common_port/dwc_os.h     | 1276 +++
+ drivers/usb/host/dwc_common_port/usb.h        |  946 +++
+ drivers/usb/host/dwc_otg/Makefile             |   85 +
+ drivers/usb/host/dwc_otg/doc/doxygen.cfg      |  224 +
+ drivers/usb/host/dwc_otg/dummy_audio.c        | 1574 ++++
+ drivers/usb/host/dwc_otg/dwc_cfi_common.h     |  142 +
+ drivers/usb/host/dwc_otg/dwc_otg_adp.c        |  854 ++
+ drivers/usb/host/dwc_otg/dwc_otg_adp.h        |   80 +
+ drivers/usb/host/dwc_otg/dwc_otg_attr.c       | 1212 +++
+ drivers/usb/host/dwc_otg/dwc_otg_attr.h       |   89 +
+ drivers/usb/host/dwc_otg/dwc_otg_cfi.c        | 1876 +++++
+ drivers/usb/host/dwc_otg/dwc_otg_cfi.h        |  320 +
+ drivers/usb/host/dwc_otg/dwc_otg_cil.c        | 7146 +++++++++++++++++
+ drivers/usb/host/dwc_otg/dwc_otg_cil.h        | 1464 ++++
+ drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c   | 1601 ++++
+ drivers/usb/host/dwc_otg/dwc_otg_core_if.h    |  705 ++
+ drivers/usb/host/dwc_otg/dwc_otg_dbg.h        |  117 +
+ drivers/usb/host/dwc_otg/dwc_otg_driver.c     | 1772 ++++
+ drivers/usb/host/dwc_otg/dwc_otg_driver.h     |   86 +
+ drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c    | 1431 ++++
+ drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h    |  399 +
+ drivers/usb/host/dwc_otg/dwc_otg_fiq_stub.S   |   80 +
+ drivers/usb/host/dwc_otg/dwc_otg_hcd.c        | 4356 ++++++++++
+ drivers/usb/host/dwc_otg/dwc_otg_hcd.h        |  870 ++
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c   | 1134 +++
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h     |  421 +
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c   | 2757 +++++++
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c  | 1086 +++
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c  |  970 +++
+ drivers/usb/host/dwc_otg/dwc_otg_os_dep.h     |  200 +
+ drivers/usb/host/dwc_otg/dwc_otg_pcd.c        | 2725 +++++++
+ drivers/usb/host/dwc_otg/dwc_otg_pcd.h        |  273 +
+ drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h     |  361 +
+ drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c   | 5148 ++++++++++++
+ drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c  | 1262 +++
+ drivers/usb/host/dwc_otg/dwc_otg_regs.h       | 2550 ++++++
+ drivers/usb/host/dwc_otg/test/Makefile        |   16 +
+ drivers/usb/host/dwc_otg/test/dwc_otg_test.pm |  337 +
+ .../usb/host/dwc_otg/test/test_mod_param.pl   |  133 +
+ drivers/usb/host/dwc_otg/test/test_sysfs.pl   |  193 +
+ 70 files changed, 60241 insertions(+), 16 deletions(-)
+ create mode 100644 drivers/usb/gadget/file_storage.c
+ create mode 100644 drivers/usb/host/dwc_common_port/Makefile
+ create mode 100644 drivers/usb/host/dwc_common_port/Makefile.fbsd
+ create mode 100644 drivers/usb/host/dwc_common_port/Makefile.linux
+ create mode 100644 drivers/usb/host/dwc_common_port/changes.txt
+ create mode 100644 drivers/usb/host/dwc_common_port/doc/doxygen.cfg
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_cc.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_cc.h
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_common_fbsd.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_common_linux.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_common_nbsd.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_crypto.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_crypto.h
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_dh.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_dh.h
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_list.h
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_mem.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_modpow.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_modpow.h
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_notifier.c
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_notifier.h
+ create mode 100644 drivers/usb/host/dwc_common_port/dwc_os.h
+ create mode 100644 drivers/usb/host/dwc_common_port/usb.h
+ create mode 100644 drivers/usb/host/dwc_otg/Makefile
+ create mode 100644 drivers/usb/host/dwc_otg/doc/doxygen.cfg
+ create mode 100644 drivers/usb/host/dwc_otg/dummy_audio.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_cfi_common.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_adp.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_adp.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_attr.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_attr.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cfi.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cfi.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cil.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cil.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_core_if.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_dbg.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_driver.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_driver.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_fiq_stub.S
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_os_dep.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c
+ create mode 100644 drivers/usb/host/dwc_otg/dwc_otg_regs.h
+ create mode 100644 drivers/usb/host/dwc_otg/test/Makefile
+ create mode 100644 drivers/usb/host/dwc_otg/test/dwc_otg_test.pm
+ create mode 100644 drivers/usb/host/dwc_otg/test/test_mod_param.pl
+ create mode 100644 drivers/usb/host/dwc_otg/test/test_sysfs.pl
+
+--- a/arch/arm/include/asm/irqflags.h
++++ b/arch/arm/include/asm/irqflags.h
+@@ -163,13 +163,23 @@ static inline unsigned long arch_local_s
+ }
+ 
+ /*
+- * restore saved IRQ & FIQ state
++ * restore saved IRQ state
+  */
+ #define arch_local_irq_restore arch_local_irq_restore
+ static inline void arch_local_irq_restore(unsigned long flags)
+ {
+-	asm volatile(
+-		"	msr	" IRQMASK_REG_NAME_W ", %0	@ local_irq_restore"
++	unsigned long temp = 0;
++	flags &= ~(1 << 6);
++	asm volatile (
++		" mrs %0, cpsr"
++		: "=r" (temp)
++		:
++		: "memory", "cc");
++		/* Preserve FIQ bit */
++		temp &= (1 << 6);
++		flags = flags | temp;
++	asm volatile (
++		"    msr    cpsr_c, %0    @ local_irq_restore"
+ 		:
+ 		: "r" (flags)
+ 		: "memory", "cc");
+--- a/arch/arm/kernel/fiqasm.S
++++ b/arch/arm/kernel/fiqasm.S
+@@ -47,3 +47,7 @@ ENTRY(__get_fiq_regs)
+ 	mov	r0, r0		@ avoid hazard prior to ARMv4
+ 	ret	lr
+ ENDPROC(__get_fiq_regs)
++
++ENTRY(__FIQ_Branch)
++	mov pc, r8
++ENDPROC(__FIQ_Branch)
+--- a/drivers/usb/Makefile
++++ b/drivers/usb/Makefile
+@@ -9,6 +9,7 @@ obj-$(CONFIG_USB_COMMON)	+= common/
+ obj-$(CONFIG_USB)		+= core/
+ obj-$(CONFIG_USB_SUPPORT)	+= phy/
+ 
++obj-$(CONFIG_USB_DWCOTG)	+= host/
+ obj-$(CONFIG_USB_DWC3)		+= dwc3/
+ obj-$(CONFIG_USB_DWC2)		+= dwc2/
+ obj-$(CONFIG_USB_ISP1760)	+= isp1760/
+--- a/drivers/usb/core/generic.c
++++ b/drivers/usb/core/generic.c
+@@ -190,6 +190,7 @@ int usb_choose_configuration(struct usb_
+ 		dev_warn(&udev->dev,
+ 			"no configuration chosen from %d choice%s\n",
+ 			num_configs, plural(num_configs));
++		dev_warn(&udev->dev, "No support over %dmA\n", udev->bus_mA);
+ 	}
+ 	return i;
+ }
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -5582,7 +5582,7 @@ static void port_event(struct usb_hub *h
+ 		port_dev->over_current_count++;
+ 		port_over_current_notify(port_dev);
+ 
+-		dev_dbg(&port_dev->dev, "over-current change #%u\n",
++		dev_notice(&port_dev->dev, "over-current change #%u\n",
+ 			port_dev->over_current_count);
+ 		usb_clear_port_feature(hdev, port1,
+ 				USB_PORT_FEAT_C_OVER_CURRENT);
+--- a/drivers/usb/core/message.c
++++ b/drivers/usb/core/message.c
+@@ -2140,6 +2140,85 @@ free_interfaces:
+ 	if (cp->string == NULL &&
+ 			!(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS))
+ 		cp->string = usb_cache_string(dev, cp->desc.iConfiguration);
++/* Uncomment this define to enable the HS Electrical Test support */
++#define DWC_HS_ELECT_TST 1
++#ifdef DWC_HS_ELECT_TST
++		/* Here we implement the HS Electrical Test support. The
++		 * tester uses a vendor ID of 0x1A0A to indicate we should
++		 * run a special test sequence. The product ID tells us
++		 * which sequence to run. We invoke the test sequence by
++		 * sending a non-standard SetFeature command to our root
++		 * hub port. Our dwc_otg_hcd_hub_control() routine will
++		 * recognize the command and perform the desired test
++		 * sequence.
++		 */
++		if (dev->descriptor.idVendor == 0x1A0A) {
++			/* HSOTG Electrical Test */
++			dev_warn(&dev->dev, "VID from HSOTG Electrical Test Fixture\n");
++
++			if (dev->bus && dev->bus->root_hub) {
++				struct usb_device *hdev = dev->bus->root_hub;
++				dev_warn(&dev->dev, "Got PID 0x%x\n", dev->descriptor.idProduct);
++
++				switch (dev->descriptor.idProduct) {
++				case 0x0101:	/* TEST_SE0_NAK */
++					dev_warn(&dev->dev, "TEST_SE0_NAK\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x300, NULL, 0, HZ);
++					break;
++
++				case 0x0102:	/* TEST_J */
++					dev_warn(&dev->dev, "TEST_J\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x100, NULL, 0, HZ);
++					break;
++
++				case 0x0103:	/* TEST_K */
++					dev_warn(&dev->dev, "TEST_K\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x200, NULL, 0, HZ);
++					break;
++
++				case 0x0104:	/* TEST_PACKET */
++					dev_warn(&dev->dev, "TEST_PACKET\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x400, NULL, 0, HZ);
++					break;
++
++				case 0x0105:	/* TEST_FORCE_ENABLE */
++					dev_warn(&dev->dev, "TEST_FORCE_ENABLE\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x500, NULL, 0, HZ);
++					break;
++
++				case 0x0106:	/* HS_HOST_PORT_SUSPEND_RESUME */
++					dev_warn(&dev->dev, "HS_HOST_PORT_SUSPEND_RESUME\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x600, NULL, 0, 40 * HZ);
++					break;
++
++				case 0x0107:	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
++					dev_warn(&dev->dev, "SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x700, NULL, 0, 40 * HZ);
++					break;
++
++				case 0x0108:	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
++					dev_warn(&dev->dev, "SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute\n");
++					usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0),
++							USB_REQ_SET_FEATURE, USB_RT_PORT,
++							USB_PORT_FEAT_TEST, 0x800, NULL, 0, 40 * HZ);
++				}
++			}
++		}
++#endif /* DWC_HS_ELECT_TST */
+ 
+ 	/* Now that the interfaces are installed, re-enable LPM. */
+ 	usb_unlocked_enable_lpm(dev);
+--- a/drivers/usb/core/otg_productlist.h
++++ b/drivers/usb/core/otg_productlist.h
+@@ -11,33 +11,82 @@
+ static struct usb_device_id productlist_table[] = {
+ 
+ /* hubs are optional in OTG, but very handy ... */
++#define CERT_WITHOUT_HUBS
++#if defined(CERT_WITHOUT_HUBS)
++{ USB_DEVICE( 0x0000, 0x0000 ), }, /* Root HUB Only*/
++#else
+ { USB_DEVICE_INFO(USB_CLASS_HUB, 0, 0), },
+ { USB_DEVICE_INFO(USB_CLASS_HUB, 0, 1), },
++{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 2), },
++#endif
+ 
+ #ifdef	CONFIG_USB_PRINTER		/* ignoring nonstatic linkage! */
+ /* FIXME actually, printers are NOT supposed to use device classes;
+  * they're supposed to use interface classes...
+  */
+-{ USB_DEVICE_INFO(7, 1, 1) },
+-{ USB_DEVICE_INFO(7, 1, 2) },
+-{ USB_DEVICE_INFO(7, 1, 3) },
++//{ USB_DEVICE_INFO(7, 1, 1) },
++//{ USB_DEVICE_INFO(7, 1, 2) },
++//{ USB_DEVICE_INFO(7, 1, 3) },
+ #endif
+ 
+ #ifdef	CONFIG_USB_NET_CDCETHER
+ /* Linux-USB CDC Ethernet gadget */
+-{ USB_DEVICE(0x0525, 0xa4a1), },
++//{ USB_DEVICE(0x0525, 0xa4a1), },
+ /* Linux-USB CDC Ethernet + RNDIS gadget */
+-{ USB_DEVICE(0x0525, 0xa4a2), },
++//{ USB_DEVICE(0x0525, 0xa4a2), },
+ #endif
+ 
+ #if	IS_ENABLED(CONFIG_USB_TEST)
+ /* gadget zero, for testing */
+-{ USB_DEVICE(0x0525, 0xa4a0), },
++//{ USB_DEVICE(0x0525, 0xa4a0), },
+ #endif
+ 
++/* OPT Tester */
++{ USB_DEVICE( 0x1a0a, 0x0101 ), }, /* TEST_SE0_NAK */
++{ USB_DEVICE( 0x1a0a, 0x0102 ), }, /* Test_J */
++{ USB_DEVICE( 0x1a0a, 0x0103 ), }, /* Test_K */
++{ USB_DEVICE( 0x1a0a, 0x0104 ), }, /* Test_PACKET */
++{ USB_DEVICE( 0x1a0a, 0x0105 ), }, /* Test_FORCE_ENABLE */
++{ USB_DEVICE( 0x1a0a, 0x0106 ), }, /* HS_PORT_SUSPEND_RESUME  */
++{ USB_DEVICE( 0x1a0a, 0x0107 ), }, /* SINGLE_STEP_GET_DESCRIPTOR setup */
++{ USB_DEVICE( 0x1a0a, 0x0108 ), }, /* SINGLE_STEP_GET_DESCRIPTOR execute */
++
++/* Sony cameras */
++{ USB_DEVICE_VER(0x054c,0x0010,0x0410, 0x0500), },
++
++/* Memory Devices */
++//{ USB_DEVICE( 0x0781, 0x5150 ), }, /* SanDisk */
++//{ USB_DEVICE( 0x05DC, 0x0080 ), }, /* Lexar */
++//{ USB_DEVICE( 0x4146, 0x9281 ), }, /* IOMEGA */
++//{ USB_DEVICE( 0x067b, 0x2507 ), }, /* Hammer 20GB External HD  */
++{ USB_DEVICE( 0x0EA0, 0x2168 ), }, /* Ours Technology Inc. (BUFFALO ClipDrive)*/
++//{ USB_DEVICE( 0x0457, 0x0150 ), }, /* Silicon Integrated Systems Corp. */
++
++/* HP Printers */
++//{ USB_DEVICE( 0x03F0, 0x1102 ), }, /* HP Photosmart 245 */
++//{ USB_DEVICE( 0x03F0, 0x1302 ), }, /* HP Photosmart 370 Series */
++
++/* Speakers */
++//{ USB_DEVICE( 0x0499, 0x3002 ), }, /* YAMAHA YST-MS35D USB Speakers */
++//{ USB_DEVICE( 0x0672, 0x1041 ), }, /* Labtec USB Headset */
++
+ { }	/* Terminating entry */
+ };
+ 
++static inline void report_errors(struct usb_device *dev)
++{
++	/* OTG MESSAGE: report errors here, customize to match your product */
++	dev_info(&dev->dev, "device Vendor:%04x Product:%04x is not supported\n",
++		 le16_to_cpu(dev->descriptor.idVendor),
++		 le16_to_cpu(dev->descriptor.idProduct));
++        if (USB_CLASS_HUB == dev->descriptor.bDeviceClass){
++                dev_printk(KERN_CRIT, &dev->dev, "Unsupported Hub Topology\n");
++        } else {
++                dev_printk(KERN_CRIT, &dev->dev, "Attached Device is not Supported\n");
++        }
++}
++
++
+ static int is_targeted(struct usb_device *dev)
+ {
+ 	struct usb_device_id	*id = productlist_table;
+@@ -87,16 +136,57 @@ static int is_targeted(struct usb_device
+ 			continue;
+ 
+ 		return 1;
+-	}
++		/* NOTE: can't use usb_match_id() since interface caches
++		 * aren't set up yet. this is cut/paste from that code.
++		 */
++		for (id = whitelist_table; id->match_flags; id++) {
++#ifdef DEBUG
++			dev_dbg(&dev->dev,
++				"ID: V:%04x P:%04x DC:%04x SC:%04x PR:%04x \n",
++				id->idVendor,
++				id->idProduct,
++				id->bDeviceClass,
++				id->bDeviceSubClass,
++				id->bDeviceProtocol);
++#endif
+ 
+-	/* add other match criteria here ... */
++			if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
++			    id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
++				continue;
++
++			if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
++			    id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
++				continue;
++
++			/* No need to test id->bcdDevice_lo != 0, since 0 is never
++			   greater than any unsigned number. */
++			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
++			    (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
++				continue;
++
++			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
++			    (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
++				continue;
++
++			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
++			    (id->bDeviceClass != dev->descriptor.bDeviceClass))
++				continue;
++
++			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
++			    (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
++				continue;
++
++			if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
++			    (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
++				continue;
+ 
++			return 1;
++		}
++	}
+ 
+-	/* OTG MESSAGE: report errors here, customize to match your product */
+-	dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
+-		le16_to_cpu(dev->descriptor.idVendor),
+-		le16_to_cpu(dev->descriptor.idProduct));
++	/* add other match criteria here ... */
+ 
++	report_errors(dev);
+ 	return 0;
+ }
+ 
+--- /dev/null
++++ b/drivers/usb/gadget/file_storage.c
+@@ -0,0 +1,3676 @@
++/*
++ * file_storage.c -- File-backed USB Storage Gadget, for USB development
++ *
++ * Copyright (C) 2003-2008 Alan Stern
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") as published by the Free Software
++ * Foundation, either version 2 of that License or (at your option) any
++ * later version.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++
++/*
++ * The File-backed Storage Gadget acts as a USB Mass Storage device,
++ * appearing to the host as a disk drive or as a CD-ROM drive.  In addition
++ * to providing an example of a genuinely useful gadget driver for a USB
++ * device, it also illustrates a technique of double-buffering for increased
++ * throughput.  Last but not least, it gives an easy way to probe the
++ * behavior of the Mass Storage drivers in a USB host.
++ *
++ * Backing storage is provided by a regular file or a block device, specified
++ * by the "file" module parameter.  Access can be limited to read-only by
++ * setting the optional "ro" module parameter.  (For CD-ROM emulation,
++ * access is always read-only.)  The gadget will indicate that it has
++ * removable media if the optional "removable" module parameter is set.
++ *
++ * The gadget supports the Control-Bulk (CB), Control-Bulk-Interrupt (CBI),
++ * and Bulk-Only (also known as Bulk-Bulk-Bulk or BBB) transports, selected
++ * by the optional "transport" module parameter.  It also supports the
++ * following protocols: RBC (0x01), ATAPI or SFF-8020i (0x02), QIC-157 (0c03),
++ * UFI (0x04), SFF-8070i (0x05), and transparent SCSI (0x06), selected by
++ * the optional "protocol" module parameter.  In addition, the default
++ * Vendor ID, Product ID, release number and serial number can be overridden.
++ *
++ * There is support for multiple logical units (LUNs), each of which has
++ * its own backing file.  The number of LUNs can be set using the optional
++ * "luns" module parameter (anywhere from 1 to 8), and the corresponding
++ * files are specified using comma-separated lists for "file" and "ro".
++ * The default number of LUNs is taken from the number of "file" elements;
++ * it is 1 if "file" is not given.  If "removable" is not set then a backing
++ * file must be specified for each LUN.  If it is set, then an unspecified
++ * or empty backing filename means the LUN's medium is not loaded.  Ideally
++ * each LUN would be settable independently as a disk drive or a CD-ROM
++ * drive, but currently all LUNs have to be the same type.  The CD-ROM
++ * emulation includes a single data track and no audio tracks; hence there
++ * need be only one backing file per LUN.
++ *
++ * Requirements are modest; only a bulk-in and a bulk-out endpoint are
++ * needed (an interrupt-out endpoint is also needed for CBI).  The memory
++ * requirement amounts to two 16K buffers, size configurable by a parameter.
++ * Support is included for both full-speed and high-speed operation.
++ *
++ * Note that the driver is slightly non-portable in that it assumes a
++ * single memory/DMA buffer will be useable for bulk-in, bulk-out, and
++ * interrupt-in endpoints.  With most device controllers this isn't an
++ * issue, but there may be some with hardware restrictions that prevent
++ * a buffer from being used by more than one endpoint.
++ *
++ * Module options:
++ *
++ *	file=filename[,filename...]
++ *				Required if "removable" is not set, names of
++ *					the files or block devices used for
++ *					backing storage
++ *	serial=HHHH...		Required serial number (string of hex chars)
++ *	ro=b[,b...]		Default false, booleans for read-only access
++ *	removable		Default false, boolean for removable media
++ *	luns=N			Default N = number of filenames, number of
++ *					LUNs to support
++ *	nofua=b[,b...]		Default false, booleans for ignore FUA flag
++ *					in SCSI WRITE(10,12) commands
++ *	stall			Default determined according to the type of
++ *					USB device controller (usually true),
++ *					boolean to permit the driver to halt
++ *					bulk endpoints
++ *	cdrom			Default false, boolean for whether to emulate
++ *					a CD-ROM drive
++ *	transport=XXX		Default BBB, transport name (CB, CBI, or BBB)
++ *	protocol=YYY		Default SCSI, protocol name (RBC, 8020 or
++ *					ATAPI, QIC, UFI, 8070, or SCSI;
++ *					also 1 - 6)
++ *	vendor=0xVVVV		Default 0x0525 (NetChip), USB Vendor ID
++ *	product=0xPPPP		Default 0xa4a5 (FSG), USB Product ID
++ *	release=0xRRRR		Override the USB release number (bcdDevice)
++ *	buflen=N		Default N=16384, buffer size used (will be
++ *					rounded down to a multiple of
++ *					PAGE_CACHE_SIZE)
++ *
++ * If CONFIG_USB_FILE_STORAGE_TEST is not set, only the "file", "serial", "ro",
++ * "removable", "luns", "nofua", "stall", and "cdrom" options are available;
++ * default values are used for everything else.
++ *
++ * The pathnames of the backing files and the ro settings are available in
++ * the attribute files "file", "nofua", and "ro" in the lun<n> subdirectory of
++ * the gadget's sysfs directory.  If the "removable" option is set, writing to
++ * these files will simulate ejecting/loading the medium (writing an empty
++ * line means eject) and adjusting a write-enable tab.  Changes to the ro
++ * setting are not allowed when the medium is loaded or if CD-ROM emulation
++ * is being used.
++ *
++ * This gadget driver is heavily based on "Gadget Zero" by David Brownell.
++ * The driver's SCSI command interface was based on the "Information
++ * technology - Small Computer System Interface - 2" document from
++ * X3T9.2 Project 375D, Revision 10L, 7-SEP-93, available at
++ * <http://www.t10.org/ftp/t10/drafts/s2/s2-r10l.pdf>.  The single exception
++ * is opcode 0x23 (READ FORMAT CAPACITIES), which was based on the
++ * "Universal Serial Bus Mass Storage Class UFI Command Specification"
++ * document, Revision 1.0, December 14, 1998, available at
++ * <http://www.usb.org/developers/devclass_docs/usbmass-ufi10.pdf>.
++ */
++
++
++/*
++ *				Driver Design
++ *
++ * The FSG driver is fairly straightforward.  There is a main kernel
++ * thread that handles most of the work.  Interrupt routines field
++ * callbacks from the controller driver: bulk- and interrupt-request
++ * completion notifications, endpoint-0 events, and disconnect events.
++ * Completion events are passed to the main thread by wakeup calls.  Many
++ * ep0 requests are handled at interrupt time, but SetInterface,
++ * SetConfiguration, and device reset requests are forwarded to the
++ * thread in the form of "exceptions" using SIGUSR1 signals (since they
++ * should interrupt any ongoing file I/O operations).
++ *
++ * The thread's main routine implements the standard command/data/status
++ * parts of a SCSI interaction.  It and its subroutines are full of tests
++ * for pending signals/exceptions -- all this polling is necessary since
++ * the kernel has no setjmp/longjmp equivalents.  (Maybe this is an
++ * indication that the driver really wants to be running in userspace.)
++ * An important point is that so long as the thread is alive it keeps an
++ * open reference to the backing file.  This will prevent unmounting
++ * the backing file's underlying filesystem and could cause problems
++ * during system shutdown, for example.  To prevent such problems, the
++ * thread catches INT, TERM, and KILL signals and converts them into
++ * an EXIT exception.
++ *
++ * In normal operation the main thread is started during the gadget's
++ * fsg_bind() callback and stopped during fsg_unbind().  But it can also
++ * exit when it receives a signal, and there's no point leaving the
++ * gadget running when the thread is dead.  So just before the thread
++ * exits, it deregisters the gadget driver.  This makes things a little
++ * tricky: The driver is deregistered at two places, and the exiting
++ * thread can indirectly call fsg_unbind() which in turn can tell the
++ * thread to exit.  The first problem is resolved through the use of the
++ * REGISTERED atomic bitflag; the driver will only be deregistered once.
++ * The second problem is resolved by having fsg_unbind() check
++ * fsg->state; it won't try to stop the thread if the state is already
++ * FSG_STATE_TERMINATED.
++ *
++ * To provide maximum throughput, the driver uses a circular pipeline of
++ * buffer heads (struct fsg_buffhd).  In principle the pipeline can be
++ * arbitrarily long; in practice the benefits don't justify having more
++ * than 2 stages (i.e., double buffering).  But it helps to think of the
++ * pipeline as being a long one.  Each buffer head contains a bulk-in and
++ * a bulk-out request pointer (since the buffer can be used for both
++ * output and input -- directions always are given from the host's
++ * point of view) as well as a pointer to the buffer and various state
++ * variables.
++ *
++ * Use of the pipeline follows a simple protocol.  There is a variable
++ * (fsg->next_buffhd_to_fill) that points to the next buffer head to use.
++ * At any time that buffer head may still be in use from an earlier
++ * request, so each buffer head has a state variable indicating whether
++ * it is EMPTY, FULL, or BUSY.  Typical use involves waiting for the
++ * buffer head to be EMPTY, filling the buffer either by file I/O or by
++ * USB I/O (during which the buffer head is BUSY), and marking the buffer
++ * head FULL when the I/O is complete.  Then the buffer will be emptied
++ * (again possibly by USB I/O, during which it is marked BUSY) and
++ * finally marked EMPTY again (possibly by a completion routine).
++ *
++ * A module parameter tells the driver to avoid stalling the bulk
++ * endpoints wherever the transport specification allows.  This is
++ * necessary for some UDCs like the SuperH, which cannot reliably clear a
++ * halt on a bulk endpoint.  However, under certain circumstances the
++ * Bulk-only specification requires a stall.  In such cases the driver
++ * will halt the endpoint and set a flag indicating that it should clear
++ * the halt in software during the next device reset.  Hopefully this
++ * will permit everything to work correctly.  Furthermore, although the
++ * specification allows the bulk-out endpoint to halt when the host sends
++ * too much data, implementing this would cause an unavoidable race.
++ * The driver will always use the "no-stall" approach for OUT transfers.
++ *
++ * One subtle point concerns sending status-stage responses for ep0
++ * requests.  Some of these requests, such as device reset, can involve
++ * interrupting an ongoing file I/O operation, which might take an
++ * arbitrarily long time.  During that delay the host might give up on
++ * the original ep0 request and issue a new one.  When that happens the
++ * driver should not notify the host about completion of the original
++ * request, as the host will no longer be waiting for it.  So the driver
++ * assigns to each ep0 request a unique tag, and it keeps track of the
++ * tag value of the request associated with a long-running exception
++ * (device-reset, interface-change, or configuration-change).  When the
++ * exception handler is finished, the status-stage response is submitted
++ * only if the current ep0 request tag is equal to the exception request
++ * tag.  Thus only the most recently received ep0 request will get a
++ * status-stage response.
++ *
++ * Warning: This driver source file is too long.  It ought to be split up
++ * into a header file plus about 3 separate .c files, to handle the details
++ * of the Gadget, USB Mass Storage, and SCSI protocols.
++ */
++
++
++/* #define VERBOSE_DEBUG */
++/* #define DUMP_MSGS */
++
++
++#include <linux/blkdev.h>
++#include <linux/completion.h>
++#include <linux/dcache.h>
++#include <linux/delay.h>
++#include <linux/device.h>
++#include <linux/fcntl.h>
++#include <linux/file.h>
++#include <linux/fs.h>
++#include <linux/kref.h>
++#include <linux/kthread.h>
++#include <linux/limits.h>
++#include <linux/module.h>
++#include <linux/rwsem.h>
++#include <linux/slab.h>
++#include <linux/spinlock.h>
++#include <linux/string.h>
++#include <linux/freezer.h>
++#include <linux/utsname.h>
++
++#include <linux/usb/ch9.h>
++#include <linux/usb/gadget.h>
++
++#include "gadget_chips.h"
++
++
++
++/*
++ * Kbuild is not very cooperative with respect to linking separately
++ * compiled library objects into one module.  So for now we won't use
++ * separate compilation ... ensuring init/exit sections work to shrink
++ * the runtime footprint, and giving us at least some parts of what
++ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
++ */
++#include "usbstring.c"
++#include "config.c"
++#include "epautoconf.c"
++
++/*-------------------------------------------------------------------------*/
++
++#define DRIVER_DESC		"File-backed Storage Gadget"
++#define DRIVER_NAME		"g_file_storage"
++#define DRIVER_VERSION		"1 September 2010"
++
++static       char fsg_string_manufacturer[64];
++static const char fsg_string_product[] = DRIVER_DESC;
++static const char fsg_string_config[] = "Self-powered";
++static const char fsg_string_interface[] = "Mass Storage";
++
++
++#include "storage_common.c"
++
++
++MODULE_DESCRIPTION(DRIVER_DESC);
++MODULE_AUTHOR("Alan Stern");
++MODULE_LICENSE("Dual BSD/GPL");
++
++/*
++ * This driver assumes self-powered hardware and has no way for users to
++ * trigger remote wakeup.  It uses autoconfiguration to select endpoints
++ * and endpoint addresses.
++ */
++
++
++/*-------------------------------------------------------------------------*/
++
++
++/* Encapsulate the module parameter settings */
++
++static struct {
++	char		*file[FSG_MAX_LUNS];
++	char		*serial;
++	bool		ro[FSG_MAX_LUNS];
++	bool		nofua[FSG_MAX_LUNS];
++	unsigned int	num_filenames;
++	unsigned int	num_ros;
++	unsigned int	num_nofuas;
++	unsigned int	nluns;
++
++	bool		removable;
++	bool		can_stall;
++	bool		cdrom;
++
++	char		*transport_parm;
++	char		*protocol_parm;
++	unsigned short	vendor;
++	unsigned short	product;
++	unsigned short	release;
++	unsigned int	buflen;
++
++	int		transport_type;
++	char		*transport_name;
++	int		protocol_type;
++	char		*protocol_name;
++
++} mod_data = {					// Default values
++	.transport_parm		= "BBB",
++	.protocol_parm		= "SCSI",
++	.removable		= 0,
++	.can_stall		= 1,
++	.cdrom			= 0,
++	.vendor			= FSG_VENDOR_ID,
++	.product		= FSG_PRODUCT_ID,
++	.release		= 0xffff,	// Use controller chip type
++	.buflen			= 16384,
++	};
++
++
++module_param_array_named(file, mod_data.file, charp, &mod_data.num_filenames,
++		S_IRUGO);
++MODULE_PARM_DESC(file, "names of backing files or devices");
++
++module_param_named(serial, mod_data.serial, charp, S_IRUGO);
++MODULE_PARM_DESC(serial, "USB serial number");
++
++module_param_array_named(ro, mod_data.ro, bool, &mod_data.num_ros, S_IRUGO);
++MODULE_PARM_DESC(ro, "true to force read-only");
++
++module_param_array_named(nofua, mod_data.nofua, bool, &mod_data.num_nofuas,
++		S_IRUGO);
++MODULE_PARM_DESC(nofua, "true to ignore SCSI WRITE(10,12) FUA bit");
++
++module_param_named(luns, mod_data.nluns, uint, S_IRUGO);
++MODULE_PARM_DESC(luns, "number of LUNs");
++
++module_param_named(removable, mod_data.removable, bool, S_IRUGO);
++MODULE_PARM_DESC(removable, "true to simulate removable media");
++
++module_param_named(stall, mod_data.can_stall, bool, S_IRUGO);
++MODULE_PARM_DESC(stall, "false to prevent bulk stalls");
++
++module_param_named(cdrom, mod_data.cdrom, bool, S_IRUGO);
++MODULE_PARM_DESC(cdrom, "true to emulate cdrom instead of disk");
++
++/* In the non-TEST version, only the module parameters listed above
++ * are available. */
++#ifdef CONFIG_USB_FILE_STORAGE_TEST
++
++module_param_named(transport, mod_data.transport_parm, charp, S_IRUGO);
++MODULE_PARM_DESC(transport, "type of transport (BBB, CBI, or CB)");
++
++module_param_named(protocol, mod_data.protocol_parm, charp, S_IRUGO);
++MODULE_PARM_DESC(protocol, "type of protocol (RBC, 8020, QIC, UFI, "
++		"8070, or SCSI)");
++
++module_param_named(vendor, mod_data.vendor, ushort, S_IRUGO);
++MODULE_PARM_DESC(vendor, "USB Vendor ID");
++
++module_param_named(product, mod_data.product, ushort, S_IRUGO);
++MODULE_PARM_DESC(product, "USB Product ID");
++
++module_param_named(release, mod_data.release, ushort, S_IRUGO);
++MODULE_PARM_DESC(release, "USB release number");
++
++module_param_named(buflen, mod_data.buflen, uint, S_IRUGO);
++MODULE_PARM_DESC(buflen, "I/O buffer size");
++
++#endif /* CONFIG_USB_FILE_STORAGE_TEST */
++
++
++/*
++ * These definitions will permit the compiler to avoid generating code for
++ * parts of the driver that aren't used in the non-TEST version.  Even gcc
++ * can recognize when a test of a constant expression yields a dead code
++ * path.
++ */
++
++#ifdef CONFIG_USB_FILE_STORAGE_TEST
++
++#define transport_is_bbb()	(mod_data.transport_type == USB_PR_BULK)
++#define transport_is_cbi()	(mod_data.transport_type == USB_PR_CBI)
++#define protocol_is_scsi()	(mod_data.protocol_type == USB_SC_SCSI)
++
++#else
++
++#define transport_is_bbb()	1
++#define transport_is_cbi()	0
++#define protocol_is_scsi()	1
++
++#endif /* CONFIG_USB_FILE_STORAGE_TEST */
++
++
++/*-------------------------------------------------------------------------*/
++
++
++struct fsg_dev {
++	/* lock protects: state, all the req_busy's, and cbbuf_cmnd */
++	spinlock_t		lock;
++	struct usb_gadget	*gadget;
++
++	/* filesem protects: backing files in use */
++	struct rw_semaphore	filesem;
++
++	/* reference counting: wait until all LUNs are released */
++	struct kref		ref;
++
++	struct usb_ep		*ep0;		// Handy copy of gadget->ep0
++	struct usb_request	*ep0req;	// For control responses
++	unsigned int		ep0_req_tag;
++	const char		*ep0req_name;
++
++	struct usb_request	*intreq;	// For interrupt responses
++	int			intreq_busy;
++	struct fsg_buffhd	*intr_buffhd;
++
++	unsigned int		bulk_out_maxpacket;
++	enum fsg_state		state;		// For exception handling
++	unsigned int		exception_req_tag;
++
++	u8			config, new_config;
++
++	unsigned int		running : 1;
++	unsigned int		bulk_in_enabled : 1;
++	unsigned int		bulk_out_enabled : 1;
++	unsigned int		intr_in_enabled : 1;
++	unsigned int		phase_error : 1;
++	unsigned int		short_packet_received : 1;
++	unsigned int		bad_lun_okay : 1;
++
++	unsigned long		atomic_bitflags;
++#define REGISTERED		0
++#define IGNORE_BULK_OUT		1
++#define SUSPENDED		2
++
++	struct usb_ep		*bulk_in;
++	struct usb_ep		*bulk_out;
++	struct usb_ep		*intr_in;
++
++	struct fsg_buffhd	*next_buffhd_to_fill;
++	struct fsg_buffhd	*next_buffhd_to_drain;
++
++	int			thread_wakeup_needed;
++	struct completion	thread_notifier;
++	struct task_struct	*thread_task;
++
++	int			cmnd_size;
++	u8			cmnd[MAX_COMMAND_SIZE];
++	enum data_direction	data_dir;
++	u32			data_size;
++	u32			data_size_from_cmnd;
++	u32			tag;
++	unsigned int		lun;
++	u32			residue;
++	u32			usb_amount_left;
++
++	/* The CB protocol offers no way for a host to know when a command
++	 * has completed.  As a result the next command may arrive early,
++	 * and we will still have to handle it.  For that reason we need
++	 * a buffer to store new commands when using CB (or CBI, which
++	 * does not oblige a host to wait for command completion either). */
++	int			cbbuf_cmnd_size;
++	u8			cbbuf_cmnd[MAX_COMMAND_SIZE];
++
++	unsigned int		nluns;
++	struct fsg_lun		*luns;
++	struct fsg_lun		*curlun;
++	/* Must be the last entry */
++	struct fsg_buffhd	buffhds[];
++};
++
++typedef void (*fsg_routine_t)(struct fsg_dev *);
++
++static int exception_in_progress(struct fsg_dev *fsg)
++{
++	return (fsg->state > FSG_STATE_IDLE);
++}
++
++/* Make bulk-out requests be divisible by the maxpacket size */
++static void set_bulk_out_req_length(struct fsg_dev *fsg,
++		struct fsg_buffhd *bh, unsigned int length)
++{
++	unsigned int	rem;
++
++	bh->bulk_out_intended_length = length;
++	rem = length % fsg->bulk_out_maxpacket;
++	if (rem > 0)
++		length += fsg->bulk_out_maxpacket - rem;
++	bh->outreq->length = length;
++}
++
++static struct fsg_dev			*the_fsg;
++static struct usb_gadget_driver		fsg_driver;
++
++
++/*-------------------------------------------------------------------------*/
++
++static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)
++{
++	const char	*name;
++
++	if (ep == fsg->bulk_in)
++		name = "bulk-in";
++	else if (ep == fsg->bulk_out)
++		name = "bulk-out";
++	else
++		name = ep->name;
++	DBG(fsg, "%s set halt\n", name);
++	return usb_ep_set_halt(ep);
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++/*
++ * DESCRIPTORS ... most are static, but strings and (full) configuration
++ * descriptors are built on demand.  Also the (static) config and interface
++ * descriptors are adjusted during fsg_bind().
++ */
++
++/* There is only one configuration. */
++#define	CONFIG_VALUE		1
++
++static struct usb_device_descriptor
++device_desc = {
++	.bLength =		sizeof device_desc,
++	.bDescriptorType =	USB_DT_DEVICE,
++
++	.bcdUSB =		cpu_to_le16(0x0200),
++	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
++
++	/* The next three values can be overridden by module parameters */
++	.idVendor =		cpu_to_le16(FSG_VENDOR_ID),
++	.idProduct =		cpu_to_le16(FSG_PRODUCT_ID),
++	.bcdDevice =		cpu_to_le16(0xffff),
++
++	.iManufacturer =	FSG_STRING_MANUFACTURER,
++	.iProduct =		FSG_STRING_PRODUCT,
++	.iSerialNumber =	FSG_STRING_SERIAL,
++	.bNumConfigurations =	1,
++};
++
++static struct usb_config_descriptor
++config_desc = {
++	.bLength =		sizeof config_desc,
++	.bDescriptorType =	USB_DT_CONFIG,
++
++	/* wTotalLength computed by usb_gadget_config_buf() */
++	.bNumInterfaces =	1,
++	.bConfigurationValue =	CONFIG_VALUE,
++	.iConfiguration =	FSG_STRING_CONFIG,
++	.bmAttributes =		USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
++	.bMaxPower =		CONFIG_USB_GADGET_VBUS_DRAW / 2,
++};
++
++
++static struct usb_qualifier_descriptor
++dev_qualifier = {
++	.bLength =		sizeof dev_qualifier,
++	.bDescriptorType =	USB_DT_DEVICE_QUALIFIER,
++
++	.bcdUSB =		cpu_to_le16(0x0200),
++	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
++
++	.bNumConfigurations =	1,
++};
++
++static int populate_bos(struct fsg_dev *fsg, u8 *buf)
++{
++	memcpy(buf, &fsg_bos_desc, USB_DT_BOS_SIZE);
++	buf += USB_DT_BOS_SIZE;
++
++	memcpy(buf, &fsg_ext_cap_desc, USB_DT_USB_EXT_CAP_SIZE);
++	buf += USB_DT_USB_EXT_CAP_SIZE;
++
++	memcpy(buf, &fsg_ss_cap_desc, USB_DT_USB_SS_CAP_SIZE);
++
++	return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE
++		+ USB_DT_USB_EXT_CAP_SIZE;
++}
++
++/*
++ * Config descriptors must agree with the code that sets configurations
++ * and with code managing interfaces and their altsettings.  They must
++ * also handle different speeds and other-speed requests.
++ */
++static int populate_config_buf(struct usb_gadget *gadget,
++		u8 *buf, u8 type, unsigned index)
++{
++	enum usb_device_speed			speed = gadget->speed;
++	int					len;
++	const struct usb_descriptor_header	**function;
++
++	if (index > 0)
++		return -EINVAL;
++
++	if (gadget_is_dualspeed(gadget) && type == USB_DT_OTHER_SPEED_CONFIG)
++		speed = (USB_SPEED_FULL + USB_SPEED_HIGH) - speed;
++	function = gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH
++		? (const struct usb_descriptor_header **)fsg_hs_function
++		: (const struct usb_descriptor_header **)fsg_fs_function;
++
++	/* for now, don't advertise srp-only devices */
++	if (!gadget_is_otg(gadget))
++		function++;
++
++	len = usb_gadget_config_buf(&config_desc, buf, EP0_BUFSIZE, function);
++	((struct usb_config_descriptor *) buf)->bDescriptorType = type;
++	return len;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++/* These routines may be called in process context or in_irq */
++
++/* Caller must hold fsg->lock */
++static void wakeup_thread(struct fsg_dev *fsg)
++{
++	/* Tell the main thread that something has happened */
++	fsg->thread_wakeup_needed = 1;
++	if (fsg->thread_task)
++		wake_up_process(fsg->thread_task);
++}
++
++
++static void raise_exception(struct fsg_dev *fsg, enum fsg_state new_state)
++{
++	unsigned long		flags;
++
++	/* Do nothing if a higher-priority exception is already in progress.
++	 * If a lower-or-equal priority exception is in progress, preempt it
++	 * and notify the main thread by sending it a signal. */
++	spin_lock_irqsave(&fsg->lock, flags);
++	if (fsg->state <= new_state) {
++		fsg->exception_req_tag = fsg->ep0_req_tag;
++		fsg->state = new_state;
++		if (fsg->thread_task)
++			send_sig_info(SIGUSR1, SEND_SIG_FORCED,
++					fsg->thread_task);
++	}
++	spin_unlock_irqrestore(&fsg->lock, flags);
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++/* The disconnect callback and ep0 routines.  These always run in_irq,
++ * except that ep0_queue() is called in the main thread to acknowledge
++ * completion of various requests: set config, set interface, and
++ * Bulk-only device reset. */
++
++static void fsg_disconnect(struct usb_gadget *gadget)
++{
++	struct fsg_dev		*fsg = get_gadget_data(gadget);
++
++	DBG(fsg, "disconnect or port reset\n");
++	raise_exception(fsg, FSG_STATE_DISCONNECT);
++}
++
++
++static int ep0_queue(struct fsg_dev *fsg)
++{
++	int	rc;
++
++	rc = usb_ep_queue(fsg->ep0, fsg->ep0req, GFP_ATOMIC);
++	if (rc != 0 && rc != -ESHUTDOWN) {
++
++		/* We can't do much more than wait for a reset */
++		WARNING(fsg, "error in submission: %s --> %d\n",
++				fsg->ep0->name, rc);
++	}
++	return rc;
++}
++
++static void ep0_complete(struct usb_ep *ep, struct usb_request *req)
++{
++	struct fsg_dev		*fsg = ep->driver_data;
++
++	if (req->actual > 0)
++		dump_msg(fsg, fsg->ep0req_name, req->buf, req->actual);
++	if (req->status || req->actual != req->length)
++		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
++				req->status, req->actual, req->length);
++	if (req->status == -ECONNRESET)		// Request was cancelled
++		usb_ep_fifo_flush(ep);
++
++	if (req->status == 0 && req->context)
++		((fsg_routine_t) (req->context))(fsg);
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++/* Bulk and interrupt endpoint completion handlers.
++ * These always run in_irq. */
++
++static void bulk_in_complete(struct usb_ep *ep, struct usb_request *req)
++{
++	struct fsg_dev		*fsg = ep->driver_data;
++	struct fsg_buffhd	*bh = req->context;
++
++	if (req->status || req->actual != req->length)
++		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
++				req->status, req->actual, req->length);
++	if (req->status == -ECONNRESET)		// Request was cancelled
++		usb_ep_fifo_flush(ep);
++
++	/* Hold the lock while we update the request and buffer states */
++	smp_wmb();
++	spin_lock(&fsg->lock);
++	bh->inreq_busy = 0;
++	bh->state = BUF_STATE_EMPTY;
++	wakeup_thread(fsg);
++	spin_unlock(&fsg->lock);
++}
++
++static void bulk_out_complete(struct usb_ep *ep, struct usb_request *req)
++{
++	struct fsg_dev		*fsg = ep->driver_data;
++	struct fsg_buffhd	*bh = req->context;
++
++	dump_msg(fsg, "bulk-out", req->buf, req->actual);
++	if (req->status || req->actual != bh->bulk_out_intended_length)
++		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
++				req->status, req->actual,
++				bh->bulk_out_intended_length);
++	if (req->status == -ECONNRESET)		// Request was cancelled
++		usb_ep_fifo_flush(ep);
++
++	/* Hold the lock while we update the request and buffer states */
++	smp_wmb();
++	spin_lock(&fsg->lock);
++	bh->outreq_busy = 0;
++	bh->state = BUF_STATE_FULL;
++	wakeup_thread(fsg);
++	spin_unlock(&fsg->lock);
++}
++
++
++#ifdef CONFIG_USB_FILE_STORAGE_TEST
++static void intr_in_complete(struct usb_ep *ep, struct usb_request *req)
++{
++	struct fsg_dev		*fsg = ep->driver_data;
++	struct fsg_buffhd	*bh = req->context;
++
++	if (req->status || req->actual != req->length)
++		DBG(fsg, "%s --> %d, %u/%u\n", __func__,
++				req->status, req->actual, req->length);
++	if (req->status == -ECONNRESET)		// Request was cancelled
++		usb_ep_fifo_flush(ep);
++
++	/* Hold the lock while we update the request and buffer states */
++	smp_wmb();
++	spin_lock(&fsg->lock);
++	fsg->intreq_busy = 0;
++	bh->state = BUF_STATE_EMPTY;
++	wakeup_thread(fsg);
++	spin_unlock(&fsg->lock);
++}
++
++#else
++static void intr_in_complete(struct usb_ep *ep, struct usb_request *req)
++{}
++#endif /* CONFIG_USB_FILE_STORAGE_TEST */
++
++
++/*-------------------------------------------------------------------------*/
++
++/* Ep0 class-specific handlers.  These always run in_irq. */
++
++#ifdef CONFIG_USB_FILE_STORAGE_TEST
++static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct usb_request	*req = fsg->ep0req;
++	static u8		cbi_reset_cmnd[6] = {
++			SEND_DIAGNOSTIC, 4, 0xff, 0xff, 0xff, 0xff};
++
++	/* Error in command transfer? */
++	if (req->status || req->length != req->actual ||
++			req->actual < 6 || req->actual > MAX_COMMAND_SIZE) {
++
++		/* Not all controllers allow a protocol stall after
++		 * receiving control-out data, but we'll try anyway. */
++		fsg_set_halt(fsg, fsg->ep0);
++		return;			// Wait for reset
++	}
++
++	/* Is it the special reset command? */
++	if (req->actual >= sizeof cbi_reset_cmnd &&
++			memcmp(req->buf, cbi_reset_cmnd,
++				sizeof cbi_reset_cmnd) == 0) {
++
++		/* Raise an exception to stop the current operation
++		 * and reinitialize our state. */
++		DBG(fsg, "cbi reset request\n");
++		raise_exception(fsg, FSG_STATE_RESET);
++		return;
++	}
++
++	VDBG(fsg, "CB[I] accept device-specific command\n");
++	spin_lock(&fsg->lock);
++
++	/* Save the command for later */
++	if (fsg->cbbuf_cmnd_size)
++		WARNING(fsg, "CB[I] overwriting previous command\n");
++	fsg->cbbuf_cmnd_size = req->actual;
++	memcpy(fsg->cbbuf_cmnd, req->buf, fsg->cbbuf_cmnd_size);
++
++	wakeup_thread(fsg);
++	spin_unlock(&fsg->lock);
++}
++
++#else
++static void received_cbi_adsc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{}
++#endif /* CONFIG_USB_FILE_STORAGE_TEST */
++
++
++static int class_setup_req(struct fsg_dev *fsg,
++		const struct usb_ctrlrequest *ctrl)
++{
++	struct usb_request	*req = fsg->ep0req;
++	int			value = -EOPNOTSUPP;
++	u16			w_index = le16_to_cpu(ctrl->wIndex);
++	u16                     w_value = le16_to_cpu(ctrl->wValue);
++	u16			w_length = le16_to_cpu(ctrl->wLength);
++
++	if (!fsg->config)
++		return value;
++
++	/* Handle Bulk-only class-specific requests */
++	if (transport_is_bbb()) {
++		switch (ctrl->bRequest) {
++
++		case US_BULK_RESET_REQUEST:
++			if (ctrl->bRequestType != (USB_DIR_OUT |
++					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
++				break;
++			if (w_index != 0 || w_value != 0 || w_length != 0) {
++				value = -EDOM;
++				break;
++			}
++
++			/* Raise an exception to stop the current operation
++			 * and reinitialize our state. */
++			DBG(fsg, "bulk reset request\n");
++			raise_exception(fsg, FSG_STATE_RESET);
++			value = DELAYED_STATUS;
++			break;
++
++		case US_BULK_GET_MAX_LUN:
++			if (ctrl->bRequestType != (USB_DIR_IN |
++					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
++				break;
++			if (w_index != 0 || w_value != 0 || w_length != 1) {
++				value = -EDOM;
++				break;
++			}
++			VDBG(fsg, "get max LUN\n");
++			*(u8 *) req->buf = fsg->nluns - 1;
++			value = 1;
++			break;
++		}
++	}
++
++	/* Handle CBI class-specific requests */
++	else {
++		switch (ctrl->bRequest) {
++
++		case USB_CBI_ADSC_REQUEST:
++			if (ctrl->bRequestType != (USB_DIR_OUT |
++					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
++				break;
++			if (w_index != 0 || w_value != 0) {
++				value = -EDOM;
++				break;
++			}
++			if (w_length > MAX_COMMAND_SIZE) {
++				value = -EOVERFLOW;
++				break;
++			}
++			value = w_length;
++			fsg->ep0req->context = received_cbi_adsc;
++			break;
++		}
++	}
++
++	if (value == -EOPNOTSUPP)
++		VDBG(fsg,
++			"unknown class-specific control req "
++			"%02x.%02x v%04x i%04x l%u\n",
++			ctrl->bRequestType, ctrl->bRequest,
++			le16_to_cpu(ctrl->wValue), w_index, w_length);
++	return value;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++/* Ep0 standard request handlers.  These always run in_irq. */
++
++static int standard_setup_req(struct fsg_dev *fsg,
++		const struct usb_ctrlrequest *ctrl)
++{
++	struct usb_request	*req = fsg->ep0req;
++	int			value = -EOPNOTSUPP;
++	u16			w_index = le16_to_cpu(ctrl->wIndex);
++	u16			w_value = le16_to_cpu(ctrl->wValue);
++
++	/* Usually this just stores reply data in the pre-allocated ep0 buffer,
++	 * but config change events will also reconfigure hardware. */
++	switch (ctrl->bRequest) {
++
++	case USB_REQ_GET_DESCRIPTOR:
++		if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
++				USB_RECIP_DEVICE))
++			break;
++		switch (w_value >> 8) {
++
++		case USB_DT_DEVICE:
++			VDBG(fsg, "get device descriptor\n");
++			device_desc.bMaxPacketSize0 = fsg->ep0->maxpacket;
++			value = sizeof device_desc;
++			memcpy(req->buf, &device_desc, value);
++			break;
++		case USB_DT_DEVICE_QUALIFIER:
++			VDBG(fsg, "get device qualifier\n");
++			if (!gadget_is_dualspeed(fsg->gadget) ||
++					fsg->gadget->speed == USB_SPEED_SUPER)
++				break;
++			/*
++			 * Assume ep0 uses the same maxpacket value for both
++			 * speeds
++			 */
++			dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
++			value = sizeof dev_qualifier;
++			memcpy(req->buf, &dev_qualifier, value);
++			break;
++
++		case USB_DT_OTHER_SPEED_CONFIG:
++			VDBG(fsg, "get other-speed config descriptor\n");
++			if (!gadget_is_dualspeed(fsg->gadget) ||
++					fsg->gadget->speed == USB_SPEED_SUPER)
++				break;
++			goto get_config;
++		case USB_DT_CONFIG:
++			VDBG(fsg, "get configuration descriptor\n");
++get_config:
++			value = populate_config_buf(fsg->gadget,
++					req->buf,
++					w_value >> 8,
++					w_value & 0xff);
++			break;
++
++		case USB_DT_STRING:
++			VDBG(fsg, "get string descriptor\n");
++
++			/* wIndex == language code */
++			value = usb_gadget_get_string(&fsg_stringtab,
++					w_value & 0xff, req->buf);
++			break;
++
++		case USB_DT_BOS:
++			VDBG(fsg, "get bos descriptor\n");
++
++			if (gadget_is_superspeed(fsg->gadget))
++				value = populate_bos(fsg, req->buf);
++			break;
++		}
++
++		break;
++
++	/* One config, two speeds */
++	case USB_REQ_SET_CONFIGURATION:
++		if (ctrl->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD |
++				USB_RECIP_DEVICE))
++			break;
++		VDBG(fsg, "set configuration\n");
++		if (w_value == CONFIG_VALUE || w_value == 0) {
++			fsg->new_config = w_value;
++
++			/* Raise an exception to wipe out previous transaction
++			 * state (queued bufs, etc) and set the new config. */
++			raise_exception(fsg, FSG_STATE_CONFIG_CHANGE);
++			value = DELAYED_STATUS;
++		}
++		break;
++	case USB_REQ_GET_CONFIGURATION:
++		if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
++				USB_RECIP_DEVICE))
++			break;
++		VDBG(fsg, "get configuration\n");
++		*(u8 *) req->buf = fsg->config;
++		value = 1;
++		break;
++
++	case USB_REQ_SET_INTERFACE:
++		if (ctrl->bRequestType != (USB_DIR_OUT| USB_TYPE_STANDARD |
++				USB_RECIP_INTERFACE))
++			break;
++		if (fsg->config && w_index == 0) {
++
++			/* Raise an exception to wipe out previous transaction
++			 * state (queued bufs, etc) and install the new
++			 * interface altsetting. */
++			raise_exception(fsg, FSG_STATE_INTERFACE_CHANGE);
++			value = DELAYED_STATUS;
++		}
++		break;
++	case USB_REQ_GET_INTERFACE:
++		if (ctrl->bRequestType != (USB_DIR_IN | USB_TYPE_STANDARD |
++				USB_RECIP_INTERFACE))
++			break;
++		if (!fsg->config)
++			break;
++		if (w_index != 0) {
++			value = -EDOM;
++			break;
++		}
++		VDBG(fsg, "get interface\n");
++		*(u8 *) req->buf = 0;
++		value = 1;
++		break;
++
++	default:
++		VDBG(fsg,
++			"unknown control req %02x.%02x v%04x i%04x l%u\n",
++			ctrl->bRequestType, ctrl->bRequest,
++			w_value, w_index, le16_to_cpu(ctrl->wLength));
++	}
++
++	return value;
++}
++
++
++static int fsg_setup(struct usb_gadget *gadget,
++		const struct usb_ctrlrequest *ctrl)
++{
++	struct fsg_dev		*fsg = get_gadget_data(gadget);
++	int			rc;
++	int			w_length = le16_to_cpu(ctrl->wLength);
++
++	++fsg->ep0_req_tag;		// Record arrival of a new request
++	fsg->ep0req->context = NULL;
++	fsg->ep0req->length = 0;
++	dump_msg(fsg, "ep0-setup", (u8 *) ctrl, sizeof(*ctrl));
++
++	if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS)
++		rc = class_setup_req(fsg, ctrl);
++	else
++		rc = standard_setup_req(fsg, ctrl);
++
++	/* Respond with data/status or defer until later? */
++	if (rc >= 0 && rc != DELAYED_STATUS) {
++		rc = min(rc, w_length);
++		fsg->ep0req->length = rc;
++		fsg->ep0req->zero = rc < w_length;
++		fsg->ep0req_name = (ctrl->bRequestType & USB_DIR_IN ?
++				"ep0-in" : "ep0-out");
++		rc = ep0_queue(fsg);
++	}
++
++	/* Device either stalls (rc < 0) or reports success */
++	return rc;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++/* All the following routines run in process context */
++
++
++/* Use this for bulk or interrupt transfers, not ep0 */
++static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep,
++		struct usb_request *req, int *pbusy,
++		enum fsg_buffer_state *state)
++{
++	int	rc;
++
++	if (ep == fsg->bulk_in)
++		dump_msg(fsg, "bulk-in", req->buf, req->length);
++	else if (ep == fsg->intr_in)
++		dump_msg(fsg, "intr-in", req->buf, req->length);
++
++	spin_lock_irq(&fsg->lock);
++	*pbusy = 1;
++	*state = BUF_STATE_BUSY;
++	spin_unlock_irq(&fsg->lock);
++	rc = usb_ep_queue(ep, req, GFP_KERNEL);
++	if (rc != 0) {
++		*pbusy = 0;
++		*state = BUF_STATE_EMPTY;
++
++		/* We can't do much more than wait for a reset */
++
++		/* Note: currently the net2280 driver fails zero-length
++		 * submissions if DMA is enabled. */
++		if (rc != -ESHUTDOWN && !(rc == -EOPNOTSUPP &&
++						req->length == 0))
++			WARNING(fsg, "error in submission: %s --> %d\n",
++					ep->name, rc);
++	}
++}
++
++
++static int sleep_thread(struct fsg_dev *fsg)
++{
++	int	rc = 0;
++
++	/* Wait until a signal arrives or we are woken up */
++	for (;;) {
++		try_to_freeze();
++		set_current_state(TASK_INTERRUPTIBLE);
++		if (signal_pending(current)) {
++			rc = -EINTR;
++			break;
++		}
++		if (fsg->thread_wakeup_needed)
++			break;
++		schedule();
++	}
++	__set_current_state(TASK_RUNNING);
++	fsg->thread_wakeup_needed = 0;
++	return rc;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int do_read(struct fsg_dev *fsg)
++{
++	struct fsg_lun		*curlun = fsg->curlun;
++	u32			lba;
++	struct fsg_buffhd	*bh;
++	int			rc;
++	u32			amount_left;
++	loff_t			file_offset, file_offset_tmp;
++	unsigned int		amount;
++	ssize_t			nread;
++
++	/* Get the starting Logical Block Address and check that it's
++	 * not too big */
++	if (fsg->cmnd[0] == READ_6)
++		lba = get_unaligned_be24(&fsg->cmnd[1]);
++	else {
++		lba = get_unaligned_be32(&fsg->cmnd[2]);
++
++		/* We allow DPO (Disable Page Out = don't save data in the
++		 * cache) and FUA (Force Unit Access = don't read from the
++		 * cache), but we don't implement them. */
++		if ((fsg->cmnd[1] & ~0x18) != 0) {
++			curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++			return -EINVAL;
++		}
++	}
++	if (lba >= curlun->num_sectors) {
++		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
++		return -EINVAL;
++	}
++	file_offset = ((loff_t) lba) << curlun->blkbits;
++
++	/* Carry out the file reads */
++	amount_left = fsg->data_size_from_cmnd;
++	if (unlikely(amount_left == 0))
++		return -EIO;		// No default reply
++
++	for (;;) {
++
++		/* Figure out how much we need to read:
++		 * Try to read the remaining amount.
++		 * But don't read more than the buffer size.
++		 * And don't try to read past the end of the file.
++		 */
++		amount = min((unsigned int) amount_left, mod_data.buflen);
++		amount = min((loff_t) amount,
++				curlun->file_length - file_offset);
++
++		/* Wait for the next buffer to become available */
++		bh = fsg->next_buffhd_to_fill;
++		while (bh->state != BUF_STATE_EMPTY) {
++			rc = sleep_thread(fsg);
++			if (rc)
++				return rc;
++		}
++
++		/* If we were asked to read past the end of file,
++		 * end with an empty buffer. */
++		if (amount == 0) {
++			curlun->sense_data =
++					SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
++			curlun->sense_data_info = file_offset >> curlun->blkbits;
++			curlun->info_valid = 1;
++			bh->inreq->length = 0;
++			bh->state = BUF_STATE_FULL;
++			break;
++		}
++
++		/* Perform the read */
++		file_offset_tmp = file_offset;
++		nread = vfs_read(curlun->filp,
++				(char __user *) bh->buf,
++				amount, &file_offset_tmp);
++		VLDBG(curlun, "file read %u @ %llu -> %d\n", amount,
++				(unsigned long long) file_offset,
++				(int) nread);
++		if (signal_pending(current))
++			return -EINTR;
++
++		if (nread < 0) {
++			LDBG(curlun, "error in file read: %d\n",
++					(int) nread);
++			nread = 0;
++		} else if (nread < amount) {
++			LDBG(curlun, "partial file read: %d/%u\n",
++					(int) nread, amount);
++			nread = round_down(nread, curlun->blksize);
++		}
++		file_offset  += nread;
++		amount_left  -= nread;
++		fsg->residue -= nread;
++
++		/* Except at the end of the transfer, nread will be
++		 * equal to the buffer size, which is divisible by the
++		 * bulk-in maxpacket size.
++		 */
++		bh->inreq->length = nread;
++		bh->state = BUF_STATE_FULL;
++
++		/* If an error occurred, report it and its position */
++		if (nread < amount) {
++			curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
++			curlun->sense_data_info = file_offset >> curlun->blkbits;
++			curlun->info_valid = 1;
++			break;
++		}
++
++		if (amount_left == 0)
++			break;		// No more left to read
++
++		/* Send this buffer and go read some more */
++		bh->inreq->zero = 0;
++		start_transfer(fsg, fsg->bulk_in, bh->inreq,
++				&bh->inreq_busy, &bh->state);
++		fsg->next_buffhd_to_fill = bh->next;
++	}
++
++	return -EIO;		// No default reply
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int do_write(struct fsg_dev *fsg)
++{
++	struct fsg_lun		*curlun = fsg->curlun;
++	u32			lba;
++	struct fsg_buffhd	*bh;
++	int			get_some_more;
++	u32			amount_left_to_req, amount_left_to_write;
++	loff_t			usb_offset, file_offset, file_offset_tmp;
++	unsigned int		amount;
++	ssize_t			nwritten;
++	int			rc;
++
++	if (curlun->ro) {
++		curlun->sense_data = SS_WRITE_PROTECTED;
++		return -EINVAL;
++	}
++	spin_lock(&curlun->filp->f_lock);
++	curlun->filp->f_flags &= ~O_SYNC;	// Default is not to wait
++	spin_unlock(&curlun->filp->f_lock);
++
++	/* Get the starting Logical Block Address and check that it's
++	 * not too big */
++	if (fsg->cmnd[0] == WRITE_6)
++		lba = get_unaligned_be24(&fsg->cmnd[1]);
++	else {
++		lba = get_unaligned_be32(&fsg->cmnd[2]);
++
++		/* We allow DPO (Disable Page Out = don't save data in the
++		 * cache) and FUA (Force Unit Access = write directly to the
++		 * medium).  We don't implement DPO; we implement FUA by
++		 * performing synchronous output. */
++		if ((fsg->cmnd[1] & ~0x18) != 0) {
++			curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++			return -EINVAL;
++		}
++		/* FUA */
++		if (!curlun->nofua && (fsg->cmnd[1] & 0x08)) {
++			spin_lock(&curlun->filp->f_lock);
++			curlun->filp->f_flags |= O_DSYNC;
++			spin_unlock(&curlun->filp->f_lock);
++		}
++	}
++	if (lba >= curlun->num_sectors) {
++		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
++		return -EINVAL;
++	}
++
++	/* Carry out the file writes */
++	get_some_more = 1;
++	file_offset = usb_offset = ((loff_t) lba) << curlun->blkbits;
++	amount_left_to_req = amount_left_to_write = fsg->data_size_from_cmnd;
++
++	while (amount_left_to_write > 0) {
++
++		/* Queue a request for more data from the host */
++		bh = fsg->next_buffhd_to_fill;
++		if (bh->state == BUF_STATE_EMPTY && get_some_more) {
++
++			/* Figure out how much we want to get:
++			 * Try to get the remaining amount,
++			 * but not more than the buffer size.
++			 */
++			amount = min(amount_left_to_req, mod_data.buflen);
++
++			/* Beyond the end of the backing file? */
++			if (usb_offset >= curlun->file_length) {
++				get_some_more = 0;
++				curlun->sense_data =
++					SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
++				curlun->sense_data_info = usb_offset >> curlun->blkbits;
++				curlun->info_valid = 1;
++				continue;
++			}
++
++			/* Get the next buffer */
++			usb_offset += amount;
++			fsg->usb_amount_left -= amount;
++			amount_left_to_req -= amount;
++			if (amount_left_to_req == 0)
++				get_some_more = 0;
++
++			/* Except at the end of the transfer, amount will be
++			 * equal to the buffer size, which is divisible by
++			 * the bulk-out maxpacket size.
++			 */
++			set_bulk_out_req_length(fsg, bh, amount);
++			start_transfer(fsg, fsg->bulk_out, bh->outreq,
++					&bh->outreq_busy, &bh->state);
++			fsg->next_buffhd_to_fill = bh->next;
++			continue;
++		}
++
++		/* Write the received data to the backing file */
++		bh = fsg->next_buffhd_to_drain;
++		if (bh->state == BUF_STATE_EMPTY && !get_some_more)
++			break;			// We stopped early
++		if (bh->state == BUF_STATE_FULL) {
++			smp_rmb();
++			fsg->next_buffhd_to_drain = bh->next;
++			bh->state = BUF_STATE_EMPTY;
++
++			/* Did something go wrong with the transfer? */
++			if (bh->outreq->status != 0) {
++				curlun->sense_data = SS_COMMUNICATION_FAILURE;
++				curlun->sense_data_info = file_offset >> curlun->blkbits;
++				curlun->info_valid = 1;
++				break;
++			}
++
++			amount = bh->outreq->actual;
++			if (curlun->file_length - file_offset < amount) {
++				LERROR(curlun,
++	"write %u @ %llu beyond end %llu\n",
++	amount, (unsigned long long) file_offset,
++	(unsigned long long) curlun->file_length);
++				amount = curlun->file_length - file_offset;
++			}
++
++			/* Don't accept excess data.  The spec doesn't say
++			 * what to do in this case.  We'll ignore the error.
++			 */
++			amount = min(amount, bh->bulk_out_intended_length);
++
++			/* Don't write a partial block */
++			amount = round_down(amount, curlun->blksize);
++			if (amount == 0)
++				goto empty_write;
++
++			/* Perform the write */
++			file_offset_tmp = file_offset;
++			nwritten = vfs_write(curlun->filp,
++					(char __user *) bh->buf,
++					amount, &file_offset_tmp);
++			VLDBG(curlun, "file write %u @ %llu -> %d\n", amount,
++					(unsigned long long) file_offset,
++					(int) nwritten);
++			if (signal_pending(current))
++				return -EINTR;		// Interrupted!
++
++			if (nwritten < 0) {
++				LDBG(curlun, "error in file write: %d\n",
++						(int) nwritten);
++				nwritten = 0;
++			} else if (nwritten < amount) {
++				LDBG(curlun, "partial file write: %d/%u\n",
++						(int) nwritten, amount);
++				nwritten = round_down(nwritten, curlun->blksize);
++			}
++			file_offset += nwritten;
++			amount_left_to_write -= nwritten;
++			fsg->residue -= nwritten;
++
++			/* If an error occurred, report it and its position */
++			if (nwritten < amount) {
++				curlun->sense_data = SS_WRITE_ERROR;
++				curlun->sense_data_info = file_offset >> curlun->blkbits;
++				curlun->info_valid = 1;
++				break;
++			}
++
++ empty_write:
++			/* Did the host decide to stop early? */
++			if (bh->outreq->actual < bh->bulk_out_intended_length) {
++				fsg->short_packet_received = 1;
++				break;
++			}
++			continue;
++		}
++
++		/* Wait for something to happen */
++		rc = sleep_thread(fsg);
++		if (rc)
++			return rc;
++	}
++
++	return -EIO;		// No default reply
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int do_synchronize_cache(struct fsg_dev *fsg)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	int		rc;
++
++	/* We ignore the requested LBA and write out all file's
++	 * dirty data buffers. */
++	rc = fsg_lun_fsync_sub(curlun);
++	if (rc)
++		curlun->sense_data = SS_WRITE_ERROR;
++	return 0;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static void invalidate_sub(struct fsg_lun *curlun)
++{
++	struct file	*filp = curlun->filp;
++	struct inode	*inode = filp->f_path.dentry->d_inode;
++	unsigned long	rc;
++
++	rc = invalidate_mapping_pages(inode->i_mapping, 0, -1);
++	VLDBG(curlun, "invalidate_mapping_pages -> %ld\n", rc);
++}
++
++static int do_verify(struct fsg_dev *fsg)
++{
++	struct fsg_lun		*curlun = fsg->curlun;
++	u32			lba;
++	u32			verification_length;
++	struct fsg_buffhd	*bh = fsg->next_buffhd_to_fill;
++	loff_t			file_offset, file_offset_tmp;
++	u32			amount_left;
++	unsigned int		amount;
++	ssize_t			nread;
++
++	/* Get the starting Logical Block Address and check that it's
++	 * not too big */
++	lba = get_unaligned_be32(&fsg->cmnd[2]);
++	if (lba >= curlun->num_sectors) {
++		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
++		return -EINVAL;
++	}
++
++	/* We allow DPO (Disable Page Out = don't save data in the
++	 * cache) but we don't implement it. */
++	if ((fsg->cmnd[1] & ~0x10) != 0) {
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++
++	verification_length = get_unaligned_be16(&fsg->cmnd[7]);
++	if (unlikely(verification_length == 0))
++		return -EIO;		// No default reply
++
++	/* Prepare to carry out the file verify */
++	amount_left = verification_length << curlun->blkbits;
++	file_offset = ((loff_t) lba) << curlun->blkbits;
++
++	/* Write out all the dirty buffers before invalidating them */
++	fsg_lun_fsync_sub(curlun);
++	if (signal_pending(current))
++		return -EINTR;
++
++	invalidate_sub(curlun);
++	if (signal_pending(current))
++		return -EINTR;
++
++	/* Just try to read the requested blocks */
++	while (amount_left > 0) {
++
++		/* Figure out how much we need to read:
++		 * Try to read the remaining amount, but not more than
++		 * the buffer size.
++		 * And don't try to read past the end of the file.
++		 */
++		amount = min((unsigned int) amount_left, mod_data.buflen);
++		amount = min((loff_t) amount,
++				curlun->file_length - file_offset);
++		if (amount == 0) {
++			curlun->sense_data =
++					SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
++			curlun->sense_data_info = file_offset >> curlun->blkbits;
++			curlun->info_valid = 1;
++			break;
++		}
++
++		/* Perform the read */
++		file_offset_tmp = file_offset;
++		nread = vfs_read(curlun->filp,
++				(char __user *) bh->buf,
++				amount, &file_offset_tmp);
++		VLDBG(curlun, "file read %u @ %llu -> %d\n", amount,
++				(unsigned long long) file_offset,
++				(int) nread);
++		if (signal_pending(current))
++			return -EINTR;
++
++		if (nread < 0) {
++			LDBG(curlun, "error in file verify: %d\n",
++					(int) nread);
++			nread = 0;
++		} else if (nread < amount) {
++			LDBG(curlun, "partial file verify: %d/%u\n",
++					(int) nread, amount);
++			nread = round_down(nread, curlun->blksize);
++		}
++		if (nread == 0) {
++			curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
++			curlun->sense_data_info = file_offset >> curlun->blkbits;
++			curlun->info_valid = 1;
++			break;
++		}
++		file_offset += nread;
++		amount_left -= nread;
++	}
++	return 0;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int do_inquiry(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	u8	*buf = (u8 *) bh->buf;
++
++	static char vendor_id[] = "Linux   ";
++	static char product_disk_id[] = "File-Stor Gadget";
++	static char product_cdrom_id[] = "File-CD Gadget  ";
++
++	if (!fsg->curlun) {		// Unsupported LUNs are okay
++		fsg->bad_lun_okay = 1;
++		memset(buf, 0, 36);
++		buf[0] = 0x7f;		// Unsupported, no device-type
++		buf[4] = 31;		// Additional length
++		return 36;
++	}
++
++	memset(buf, 0, 8);
++	buf[0] = (mod_data.cdrom ? TYPE_ROM : TYPE_DISK);
++	if (mod_data.removable)
++		buf[1] = 0x80;
++	buf[2] = 2;		// ANSI SCSI level 2
++	buf[3] = 2;		// SCSI-2 INQUIRY data format
++	buf[4] = 31;		// Additional length
++				// No special options
++	sprintf(buf + 8, "%-8s%-16s%04x", vendor_id,
++			(mod_data.cdrom ? product_cdrom_id :
++				product_disk_id),
++			mod_data.release);
++	return 36;
++}
++
++
++static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	u8		*buf = (u8 *) bh->buf;
++	u32		sd, sdinfo;
++	int		valid;
++
++	/*
++	 * From the SCSI-2 spec., section 7.9 (Unit attention condition):
++	 *
++	 * If a REQUEST SENSE command is received from an initiator
++	 * with a pending unit attention condition (before the target
++	 * generates the contingent allegiance condition), then the
++	 * target shall either:
++	 *   a) report any pending sense data and preserve the unit
++	 *	attention condition on the logical unit, or,
++	 *   b) report the unit attention condition, may discard any
++	 *	pending sense data, and clear the unit attention
++	 *	condition on the logical unit for that initiator.
++	 *
++	 * FSG normally uses option a); enable this code to use option b).
++	 */
++#if 0
++	if (curlun && curlun->unit_attention_data != SS_NO_SENSE) {
++		curlun->sense_data = curlun->unit_attention_data;
++		curlun->unit_attention_data = SS_NO_SENSE;
++	}
++#endif
++
++	if (!curlun) {		// Unsupported LUNs are okay
++		fsg->bad_lun_okay = 1;
++		sd = SS_LOGICAL_UNIT_NOT_SUPPORTED;
++		sdinfo = 0;
++		valid = 0;
++	} else {
++		sd = curlun->sense_data;
++		sdinfo = curlun->sense_data_info;
++		valid = curlun->info_valid << 7;
++		curlun->sense_data = SS_NO_SENSE;
++		curlun->sense_data_info = 0;
++		curlun->info_valid = 0;
++	}
++
++	memset(buf, 0, 18);
++	buf[0] = valid | 0x70;			// Valid, current error
++	buf[2] = SK(sd);
++	put_unaligned_be32(sdinfo, &buf[3]);	/* Sense information */
++	buf[7] = 18 - 8;			// Additional sense length
++	buf[12] = ASC(sd);
++	buf[13] = ASCQ(sd);
++	return 18;
++}
++
++
++static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	u32		lba = get_unaligned_be32(&fsg->cmnd[2]);
++	int		pmi = fsg->cmnd[8];
++	u8		*buf = (u8 *) bh->buf;
++
++	/* Check the PMI and LBA fields */
++	if (pmi > 1 || (pmi == 0 && lba != 0)) {
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++
++	put_unaligned_be32(curlun->num_sectors - 1, &buf[0]);
++						/* Max logical block */
++	put_unaligned_be32(curlun->blksize, &buf[4]);	/* Block length */
++	return 8;
++}
++
++
++static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	int		msf = fsg->cmnd[1] & 0x02;
++	u32		lba = get_unaligned_be32(&fsg->cmnd[2]);
++	u8		*buf = (u8 *) bh->buf;
++
++	if ((fsg->cmnd[1] & ~0x02) != 0) {		/* Mask away MSF */
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++	if (lba >= curlun->num_sectors) {
++		curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
++		return -EINVAL;
++	}
++
++	memset(buf, 0, 8);
++	buf[0] = 0x01;		/* 2048 bytes of user data, rest is EC */
++	store_cdrom_address(&buf[4], msf, lba);
++	return 8;
++}
++
++
++static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	int		msf = fsg->cmnd[1] & 0x02;
++	int		start_track = fsg->cmnd[6];
++	u8		*buf = (u8 *) bh->buf;
++
++	if ((fsg->cmnd[1] & ~0x02) != 0 ||		/* Mask away MSF */
++			start_track > 1) {
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++
++	memset(buf, 0, 20);
++	buf[1] = (20-2);		/* TOC data length */
++	buf[2] = 1;			/* First track number */
++	buf[3] = 1;			/* Last track number */
++	buf[5] = 0x16;			/* Data track, copying allowed */
++	buf[6] = 0x01;			/* Only track is number 1 */
++	store_cdrom_address(&buf[8], msf, 0);
++
++	buf[13] = 0x16;			/* Lead-out track is data */
++	buf[14] = 0xAA;			/* Lead-out track number */
++	store_cdrom_address(&buf[16], msf, curlun->num_sectors);
++	return 20;
++}
++
++
++static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	int		mscmnd = fsg->cmnd[0];
++	u8		*buf = (u8 *) bh->buf;
++	u8		*buf0 = buf;
++	int		pc, page_code;
++	int		changeable_values, all_pages;
++	int		valid_page = 0;
++	int		len, limit;
++
++	if ((fsg->cmnd[1] & ~0x08) != 0) {		// Mask away DBD
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++	pc = fsg->cmnd[2] >> 6;
++	page_code = fsg->cmnd[2] & 0x3f;
++	if (pc == 3) {
++		curlun->sense_data = SS_SAVING_PARAMETERS_NOT_SUPPORTED;
++		return -EINVAL;
++	}
++	changeable_values = (pc == 1);
++	all_pages = (page_code == 0x3f);
++
++	/* Write the mode parameter header.  Fixed values are: default
++	 * medium type, no cache control (DPOFUA), and no block descriptors.
++	 * The only variable value is the WriteProtect bit.  We will fill in
++	 * the mode data length later. */
++	memset(buf, 0, 8);
++	if (mscmnd == MODE_SENSE) {
++		buf[2] = (curlun->ro ? 0x80 : 0x00);		// WP, DPOFUA
++		buf += 4;
++		limit = 255;
++	} else {			// MODE_SENSE_10
++		buf[3] = (curlun->ro ? 0x80 : 0x00);		// WP, DPOFUA
++		buf += 8;
++		limit = 65535;		// Should really be mod_data.buflen
++	}
++
++	/* No block descriptors */
++
++	/* The mode pages, in numerical order.  The only page we support
++	 * is the Caching page. */
++	if (page_code == 0x08 || all_pages) {
++		valid_page = 1;
++		buf[0] = 0x08;		// Page code
++		buf[1] = 10;		// Page length
++		memset(buf+2, 0, 10);	// None of the fields are changeable
++
++		if (!changeable_values) {
++			buf[2] = 0x04;	// Write cache enable,
++					// Read cache not disabled
++					// No cache retention priorities
++			put_unaligned_be16(0xffff, &buf[4]);
++					/* Don't disable prefetch */
++					/* Minimum prefetch = 0 */
++			put_unaligned_be16(0xffff, &buf[8]);
++					/* Maximum prefetch */
++			put_unaligned_be16(0xffff, &buf[10]);
++					/* Maximum prefetch ceiling */
++		}
++		buf += 12;
++	}
++
++	/* Check that a valid page was requested and the mode data length
++	 * isn't too long. */
++	len = buf - buf0;
++	if (!valid_page || len > limit) {
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++
++	/*  Store the mode data length */
++	if (mscmnd == MODE_SENSE)
++		buf0[0] = len - 1;
++	else
++		put_unaligned_be16(len - 2, buf0);
++	return len;
++}
++
++
++static int do_start_stop(struct fsg_dev *fsg)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	int		loej, start;
++
++	if (!mod_data.removable) {
++		curlun->sense_data = SS_INVALID_COMMAND;
++		return -EINVAL;
++	}
++
++	// int immed = fsg->cmnd[1] & 0x01;
++	loej = fsg->cmnd[4] & 0x02;
++	start = fsg->cmnd[4] & 0x01;
++
++#ifdef CONFIG_USB_FILE_STORAGE_TEST
++	if ((fsg->cmnd[1] & ~0x01) != 0 ||		// Mask away Immed
++			(fsg->cmnd[4] & ~0x03) != 0) {	// Mask LoEj, Start
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++
++	if (!start) {
++
++		/* Are we allowed to unload the media? */
++		if (curlun->prevent_medium_removal) {
++			LDBG(curlun, "unload attempt prevented\n");
++			curlun->sense_data = SS_MEDIUM_REMOVAL_PREVENTED;
++			return -EINVAL;
++		}
++		if (loej) {		// Simulate an unload/eject
++			up_read(&fsg->filesem);
++			down_write(&fsg->filesem);
++			fsg_lun_close(curlun);
++			up_write(&fsg->filesem);
++			down_read(&fsg->filesem);
++		}
++	} else {
++
++		/* Our emulation doesn't support mounting; the medium is
++		 * available for use as soon as it is loaded. */
++		if (!fsg_lun_is_open(curlun)) {
++			curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
++			return -EINVAL;
++		}
++	}
++#endif
++	return 0;
++}
++
++
++static int do_prevent_allow(struct fsg_dev *fsg)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	int		prevent;
++
++	if (!mod_data.removable) {
++		curlun->sense_data = SS_INVALID_COMMAND;
++		return -EINVAL;
++	}
++
++	prevent = fsg->cmnd[4] & 0x01;
++	if ((fsg->cmnd[4] & ~0x01) != 0) {		// Mask away Prevent
++		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++		return -EINVAL;
++	}
++
++	if (curlun->prevent_medium_removal && !prevent)
++		fsg_lun_fsync_sub(curlun);
++	curlun->prevent_medium_removal = prevent;
++	return 0;
++}
++
++
++static int do_read_format_capacities(struct fsg_dev *fsg,
++			struct fsg_buffhd *bh)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++	u8		*buf = (u8 *) bh->buf;
++
++	buf[0] = buf[1] = buf[2] = 0;
++	buf[3] = 8;		// Only the Current/Maximum Capacity Descriptor
++	buf += 4;
++
++	put_unaligned_be32(curlun->num_sectors, &buf[0]);
++						/* Number of blocks */
++	put_unaligned_be32(curlun->blksize, &buf[4]);	/* Block length */
++	buf[4] = 0x02;				/* Current capacity */
++	return 12;
++}
++
++
++static int do_mode_select(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct fsg_lun	*curlun = fsg->curlun;
++
++	/* We don't support MODE SELECT */
++	curlun->sense_data = SS_INVALID_COMMAND;
++	return -EINVAL;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int halt_bulk_in_endpoint(struct fsg_dev *fsg)
++{
++	int	rc;
++
++	rc = fsg_set_halt(fsg, fsg->bulk_in);
++	if (rc == -EAGAIN)
++		VDBG(fsg, "delayed bulk-in endpoint halt\n");
++	while (rc != 0) {
++		if (rc != -EAGAIN) {
++			WARNING(fsg, "usb_ep_set_halt -> %d\n", rc);
++			rc = 0;
++			break;
++		}
++
++		/* Wait for a short time and then try again */
++		if (msleep_interruptible(100) != 0)
++			return -EINTR;
++		rc = usb_ep_set_halt(fsg->bulk_in);
++	}
++	return rc;
++}
++
++static int wedge_bulk_in_endpoint(struct fsg_dev *fsg)
++{
++	int	rc;
++
++	DBG(fsg, "bulk-in set wedge\n");
++	rc = usb_ep_set_wedge(fsg->bulk_in);
++	if (rc == -EAGAIN)
++		VDBG(fsg, "delayed bulk-in endpoint wedge\n");
++	while (rc != 0) {
++		if (rc != -EAGAIN) {
++			WARNING(fsg, "usb_ep_set_wedge -> %d\n", rc);
++			rc = 0;
++			break;
++		}
++
++		/* Wait for a short time and then try again */
++		if (msleep_interruptible(100) != 0)
++			return -EINTR;
++		rc = usb_ep_set_wedge(fsg->bulk_in);
++	}
++	return rc;
++}
++
++static int throw_away_data(struct fsg_dev *fsg)
++{
++	struct fsg_buffhd	*bh;
++	u32			amount;
++	int			rc;
++
++	while ((bh = fsg->next_buffhd_to_drain)->state != BUF_STATE_EMPTY ||
++			fsg->usb_amount_left > 0) {
++
++		/* Throw away the data in a filled buffer */
++		if (bh->state == BUF_STATE_FULL) {
++			smp_rmb();
++			bh->state = BUF_STATE_EMPTY;
++			fsg->next_buffhd_to_drain = bh->next;
++
++			/* A short packet or an error ends everything */
++			if (bh->outreq->actual < bh->bulk_out_intended_length ||
++					bh->outreq->status != 0) {
++				raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
++				return -EINTR;
++			}
++			continue;
++		}
++
++		/* Try to submit another request if we need one */
++		bh = fsg->next_buffhd_to_fill;
++		if (bh->state == BUF_STATE_EMPTY && fsg->usb_amount_left > 0) {
++			amount = min(fsg->usb_amount_left,
++					(u32) mod_data.buflen);
++
++			/* Except at the end of the transfer, amount will be
++			 * equal to the buffer size, which is divisible by
++			 * the bulk-out maxpacket size.
++			 */
++			set_bulk_out_req_length(fsg, bh, amount);
++			start_transfer(fsg, fsg->bulk_out, bh->outreq,
++					&bh->outreq_busy, &bh->state);
++			fsg->next_buffhd_to_fill = bh->next;
++			fsg->usb_amount_left -= amount;
++			continue;
++		}
++
++		/* Otherwise wait for something to happen */
++		rc = sleep_thread(fsg);
++		if (rc)
++			return rc;
++	}
++	return 0;
++}
++
++
++static int finish_reply(struct fsg_dev *fsg)
++{
++	struct fsg_buffhd	*bh = fsg->next_buffhd_to_fill;
++	int			rc = 0;
++
++	switch (fsg->data_dir) {
++	case DATA_DIR_NONE:
++		break;			// Nothing to send
++
++	/* If we don't know whether the host wants to read or write,
++	 * this must be CB or CBI with an unknown command.  We mustn't
++	 * try to send or receive any data.  So stall both bulk pipes
++	 * if we can and wait for a reset. */
++	case DATA_DIR_UNKNOWN:
++		if (mod_data.can_stall) {
++			fsg_set_halt(fsg, fsg->bulk_out);
++			rc = halt_bulk_in_endpoint(fsg);
++		}
++		break;
++
++	/* All but the last buffer of data must have already been sent */
++	case DATA_DIR_TO_HOST:
++		if (fsg->data_size == 0)
++			;		// Nothing to send
++
++		/* If there's no residue, simply send the last buffer */
++		else if (fsg->residue == 0) {
++			bh->inreq->zero = 0;
++			start_transfer(fsg, fsg->bulk_in, bh->inreq,
++					&bh->inreq_busy, &bh->state);
++			fsg->next_buffhd_to_fill = bh->next;
++		}
++
++		/* There is a residue.  For CB and CBI, simply mark the end
++		 * of the data with a short packet.  However, if we are
++		 * allowed to stall, there was no data at all (residue ==
++		 * data_size), and the command failed (invalid LUN or
++		 * sense data is set), then halt the bulk-in endpoint
++		 * instead. */
++		else if (!transport_is_bbb()) {
++			if (mod_data.can_stall &&
++					fsg->residue == fsg->data_size &&
++	(!fsg->curlun || fsg->curlun->sense_data != SS_NO_SENSE)) {
++				bh->state = BUF_STATE_EMPTY;
++				rc = halt_bulk_in_endpoint(fsg);
++			} else {
++				bh->inreq->zero = 1;
++				start_transfer(fsg, fsg->bulk_in, bh->inreq,
++						&bh->inreq_busy, &bh->state);
++				fsg->next_buffhd_to_fill = bh->next;
++			}
++		}
++
++		/*
++		 * For Bulk-only, mark the end of the data with a short
++		 * packet.  If we are allowed to stall, halt the bulk-in
++		 * endpoint.  (Note: This violates the Bulk-Only Transport
++		 * specification, which requires us to pad the data if we
++		 * don't halt the endpoint.  Presumably nobody will mind.)
++		 */
++		else {
++			bh->inreq->zero = 1;
++			start_transfer(fsg, fsg->bulk_in, bh->inreq,
++					&bh->inreq_busy, &bh->state);
++			fsg->next_buffhd_to_fill = bh->next;
++			if (mod_data.can_stall)
++				rc = halt_bulk_in_endpoint(fsg);
++		}
++		break;
++
++	/* We have processed all we want from the data the host has sent.
++	 * There may still be outstanding bulk-out requests. */
++	case DATA_DIR_FROM_HOST:
++		if (fsg->residue == 0)
++			;		// Nothing to receive
++
++		/* Did the host stop sending unexpectedly early? */
++		else if (fsg->short_packet_received) {
++			raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
++			rc = -EINTR;
++		}
++
++		/* We haven't processed all the incoming data.  Even though
++		 * we may be allowed to stall, doing so would cause a race.
++		 * The controller may already have ACK'ed all the remaining
++		 * bulk-out packets, in which case the host wouldn't see a
++		 * STALL.  Not realizing the endpoint was halted, it wouldn't
++		 * clear the halt -- leading to problems later on. */
++#if 0
++		else if (mod_data.can_stall) {
++			fsg_set_halt(fsg, fsg->bulk_out);
++			raise_exception(fsg, FSG_STATE_ABORT_BULK_OUT);
++			rc = -EINTR;
++		}
++#endif
++
++		/* We can't stall.  Read in the excess data and throw it
++		 * all away. */
++		else
++			rc = throw_away_data(fsg);
++		break;
++	}
++	return rc;
++}
++
++
++static int send_status(struct fsg_dev *fsg)
++{
++	struct fsg_lun		*curlun = fsg->curlun;
++	struct fsg_buffhd	*bh;
++	int			rc;
++	u8			status = US_BULK_STAT_OK;
++	u32			sd, sdinfo = 0;
++
++	/* Wait for the next buffer to become available */
++	bh = fsg->next_buffhd_to_fill;
++	while (bh->state != BUF_STATE_EMPTY) {
++		rc = sleep_thread(fsg);
++		if (rc)
++			return rc;
++	}
++
++	if (curlun) {
++		sd = curlun->sense_data;
++		sdinfo = curlun->sense_data_info;
++	} else if (fsg->bad_lun_okay)
++		sd = SS_NO_SENSE;
++	else
++		sd = SS_LOGICAL_UNIT_NOT_SUPPORTED;
++
++	if (fsg->phase_error) {
++		DBG(fsg, "sending phase-error status\n");
++		status = US_BULK_STAT_PHASE;
++		sd = SS_INVALID_COMMAND;
++	} else if (sd != SS_NO_SENSE) {
++		DBG(fsg, "sending command-failure status\n");
++		status = US_BULK_STAT_FAIL;
++		VDBG(fsg, "  sense data: SK x%02x, ASC x%02x, ASCQ x%02x;"
++				"  info x%x\n",
++				SK(sd), ASC(sd), ASCQ(sd), sdinfo);
++	}
++
++	if (transport_is_bbb()) {
++		struct bulk_cs_wrap	*csw = bh->buf;
++
++		/* Store and send the Bulk-only CSW */
++		csw->Signature = cpu_to_le32(US_BULK_CS_SIGN);
++		csw->Tag = fsg->tag;
++		csw->Residue = cpu_to_le32(fsg->residue);
++		csw->Status = status;
++
++		bh->inreq->length = US_BULK_CS_WRAP_LEN;
++		bh->inreq->zero = 0;
++		start_transfer(fsg, fsg->bulk_in, bh->inreq,
++				&bh->inreq_busy, &bh->state);
++
++	} else if (mod_data.transport_type == USB_PR_CB) {
++
++		/* Control-Bulk transport has no status phase! */
++		return 0;
++
++	} else {			// USB_PR_CBI
++		struct interrupt_data	*buf = bh->buf;
++
++		/* Store and send the Interrupt data.  UFI sends the ASC
++		 * and ASCQ bytes.  Everything else sends a Type (which
++		 * is always 0) and the status Value. */
++		if (mod_data.protocol_type == USB_SC_UFI) {
++			buf->bType = ASC(sd);
++			buf->bValue = ASCQ(sd);
++		} else {
++			buf->bType = 0;
++			buf->bValue = status;
++		}
++		fsg->intreq->length = CBI_INTERRUPT_DATA_LEN;
++
++		fsg->intr_buffhd = bh;		// Point to the right buffhd
++		fsg->intreq->buf = bh->inreq->buf;
++		fsg->intreq->context = bh;
++		start_transfer(fsg, fsg->intr_in, fsg->intreq,
++				&fsg->intreq_busy, &bh->state);
++	}
++
++	fsg->next_buffhd_to_fill = bh->next;
++	return 0;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++/* Check whether the command is properly formed and whether its data size
++ * and direction agree with the values we already have. */
++static int check_command(struct fsg_dev *fsg, int cmnd_size,
++		enum data_direction data_dir, unsigned int mask,
++		int needs_medium, const char *name)
++{
++	int			i;
++	int			lun = fsg->cmnd[1] >> 5;
++	static const char	dirletter[4] = {'u', 'o', 'i', 'n'};
++	char			hdlen[20];
++	struct fsg_lun		*curlun;
++
++	/* Adjust the expected cmnd_size for protocol encapsulation padding.
++	 * Transparent SCSI doesn't pad. */
++	if (protocol_is_scsi())
++		;
++
++	/* There's some disagreement as to whether RBC pads commands or not.
++	 * We'll play it safe and accept either form. */
++	else if (mod_data.protocol_type == USB_SC_RBC) {
++		if (fsg->cmnd_size == 12)
++			cmnd_size = 12;
++
++	/* All the other protocols pad to 12 bytes */
++	} else
++		cmnd_size = 12;
++
++	hdlen[0] = 0;
++	if (fsg->data_dir != DATA_DIR_UNKNOWN)
++		sprintf(hdlen, ", H%c=%u", dirletter[(int) fsg->data_dir],
++				fsg->data_size);
++	VDBG(fsg, "SCSI command: %s;  Dc=%d, D%c=%u;  Hc=%d%s\n",
++			name, cmnd_size, dirletter[(int) data_dir],
++			fsg->data_size_from_cmnd, fsg->cmnd_size, hdlen);
++
++	/* We can't reply at all until we know the correct data direction
++	 * and size. */
++	if (fsg->data_size_from_cmnd == 0)
++		data_dir = DATA_DIR_NONE;
++	if (fsg->data_dir == DATA_DIR_UNKNOWN) {	// CB or CBI
++		fsg->data_dir = data_dir;
++		fsg->data_size = fsg->data_size_from_cmnd;
++
++	} else {					// Bulk-only
++		if (fsg->data_size < fsg->data_size_from_cmnd) {
++
++			/* Host data size < Device data size is a phase error.
++			 * Carry out the command, but only transfer as much
++			 * as we are allowed. */
++			fsg->data_size_from_cmnd = fsg->data_size;
++			fsg->phase_error = 1;
++		}
++	}
++	fsg->residue = fsg->usb_amount_left = fsg->data_size;
++
++	/* Conflicting data directions is a phase error */
++	if (fsg->data_dir != data_dir && fsg->data_size_from_cmnd > 0) {
++		fsg->phase_error = 1;
++		return -EINVAL;
++	}
++
++	/* Verify the length of the command itself */
++	if (cmnd_size != fsg->cmnd_size) {
++
++		/* Special case workaround: There are plenty of buggy SCSI
++		 * implementations. Many have issues with cbw->Length
++		 * field passing a wrong command size. For those cases we
++		 * always try to work around the problem by using the length
++		 * sent by the host side provided it is at least as large
++		 * as the correct command length.
++		 * Examples of such cases would be MS-Windows, which issues
++		 * REQUEST SENSE with cbw->Length == 12 where it should
++		 * be 6, and xbox360 issuing INQUIRY, TEST UNIT READY and
++		 * REQUEST SENSE with cbw->Length == 10 where it should
++		 * be 6 as well.
++		 */
++		if (cmnd_size <= fsg->cmnd_size) {
++			DBG(fsg, "%s is buggy! Expected length %d "
++					"but we got %d\n", name,
++					cmnd_size, fsg->cmnd_size);
++			cmnd_size = fsg->cmnd_size;
++		} else {
++			fsg->phase_error = 1;
++			return -EINVAL;
++		}
++	}
++
++	/* Check that the LUN values are consistent */
++	if (transport_is_bbb()) {
++		if (fsg->lun != lun)
++			DBG(fsg, "using LUN %d from CBW, "
++					"not LUN %d from CDB\n",
++					fsg->lun, lun);
++	}
++
++	/* Check the LUN */
++	curlun = fsg->curlun;
++	if (curlun) {
++		if (fsg->cmnd[0] != REQUEST_SENSE) {
++			curlun->sense_data = SS_NO_SENSE;
++			curlun->sense_data_info = 0;
++			curlun->info_valid = 0;
++		}
++	} else {
++		fsg->bad_lun_okay = 0;
++
++		/* INQUIRY and REQUEST SENSE commands are explicitly allowed
++		 * to use unsupported LUNs; all others may not. */
++		if (fsg->cmnd[0] != INQUIRY &&
++				fsg->cmnd[0] != REQUEST_SENSE) {
++			DBG(fsg, "unsupported LUN %d\n", fsg->lun);
++			return -EINVAL;
++		}
++	}
++
++	/* If a unit attention condition exists, only INQUIRY and
++	 * REQUEST SENSE commands are allowed; anything else must fail. */
++	if (curlun && curlun->unit_attention_data != SS_NO_SENSE &&
++			fsg->cmnd[0] != INQUIRY &&
++			fsg->cmnd[0] != REQUEST_SENSE) {
++		curlun->sense_data = curlun->unit_attention_data;
++		curlun->unit_attention_data = SS_NO_SENSE;
++		return -EINVAL;
++	}
++
++	/* Check that only command bytes listed in the mask are non-zero */
++	fsg->cmnd[1] &= 0x1f;			// Mask away the LUN
++	for (i = 1; i < cmnd_size; ++i) {
++		if (fsg->cmnd[i] && !(mask & (1 << i))) {
++			if (curlun)
++				curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
++			return -EINVAL;
++		}
++	}
++
++	/* If the medium isn't mounted and the command needs to access
++	 * it, return an error. */
++	if (curlun && !fsg_lun_is_open(curlun) && needs_medium) {
++		curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/* wrapper of check_command for data size in blocks handling */
++static int check_command_size_in_blocks(struct fsg_dev *fsg, int cmnd_size,
++		enum data_direction data_dir, unsigned int mask,
++		int needs_medium, const char *name)
++{
++	if (fsg->curlun)
++		fsg->data_size_from_cmnd <<= fsg->curlun->blkbits;
++	return check_command(fsg, cmnd_size, data_dir,
++			mask, needs_medium, name);
++}
++
++static int do_scsi_command(struct fsg_dev *fsg)
++{
++	struct fsg_buffhd	*bh;
++	int			rc;
++	int			reply = -EINVAL;
++	int			i;
++	static char		unknown[16];
++
++	dump_cdb(fsg);
++
++	/* Wait for the next buffer to become available for data or status */
++	bh = fsg->next_buffhd_to_drain = fsg->next_buffhd_to_fill;
++	while (bh->state != BUF_STATE_EMPTY) {
++		rc = sleep_thread(fsg);
++		if (rc)
++			return rc;
++	}
++	fsg->phase_error = 0;
++	fsg->short_packet_received = 0;
++
++	down_read(&fsg->filesem);	// We're using the backing file
++	switch (fsg->cmnd[0]) {
++
++	case INQUIRY:
++		fsg->data_size_from_cmnd = fsg->cmnd[4];
++		if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
++				(1<<4), 0,
++				"INQUIRY")) == 0)
++			reply = do_inquiry(fsg, bh);
++		break;
++
++	case MODE_SELECT:
++		fsg->data_size_from_cmnd = fsg->cmnd[4];
++		if ((reply = check_command(fsg, 6, DATA_DIR_FROM_HOST,
++				(1<<1) | (1<<4), 0,
++				"MODE SELECT(6)")) == 0)
++			reply = do_mode_select(fsg, bh);
++		break;
++
++	case MODE_SELECT_10:
++		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
++		if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST,
++				(1<<1) | (3<<7), 0,
++				"MODE SELECT(10)")) == 0)
++			reply = do_mode_select(fsg, bh);
++		break;
++
++	case MODE_SENSE:
++		fsg->data_size_from_cmnd = fsg->cmnd[4];
++		if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
++				(1<<1) | (1<<2) | (1<<4), 0,
++				"MODE SENSE(6)")) == 0)
++			reply = do_mode_sense(fsg, bh);
++		break;
++
++	case MODE_SENSE_10:
++		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
++		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
++				(1<<1) | (1<<2) | (3<<7), 0,
++				"MODE SENSE(10)")) == 0)
++			reply = do_mode_sense(fsg, bh);
++		break;
++
++	case ALLOW_MEDIUM_REMOVAL:
++		fsg->data_size_from_cmnd = 0;
++		if ((reply = check_command(fsg, 6, DATA_DIR_NONE,
++				(1<<4), 0,
++				"PREVENT-ALLOW MEDIUM REMOVAL")) == 0)
++			reply = do_prevent_allow(fsg);
++		break;
++
++	case READ_6:
++		i = fsg->cmnd[4];
++		fsg->data_size_from_cmnd = (i == 0) ? 256 : i;
++		if ((reply = check_command_size_in_blocks(fsg, 6,
++				DATA_DIR_TO_HOST,
++				(7<<1) | (1<<4), 1,
++				"READ(6)")) == 0)
++			reply = do_read(fsg);
++		break;
++
++	case READ_10:
++		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
++		if ((reply = check_command_size_in_blocks(fsg, 10,
++				DATA_DIR_TO_HOST,
++				(1<<1) | (0xf<<2) | (3<<7), 1,
++				"READ(10)")) == 0)
++			reply = do_read(fsg);
++		break;
++
++	case READ_12:
++		fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]);
++		if ((reply = check_command_size_in_blocks(fsg, 12,
++				DATA_DIR_TO_HOST,
++				(1<<1) | (0xf<<2) | (0xf<<6), 1,
++				"READ(12)")) == 0)
++			reply = do_read(fsg);
++		break;
++
++	case READ_CAPACITY:
++		fsg->data_size_from_cmnd = 8;
++		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
++				(0xf<<2) | (1<<8), 1,
++				"READ CAPACITY")) == 0)
++			reply = do_read_capacity(fsg, bh);
++		break;
++
++	case READ_HEADER:
++		if (!mod_data.cdrom)
++			goto unknown_cmnd;
++		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
++		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
++				(3<<7) | (0x1f<<1), 1,
++				"READ HEADER")) == 0)
++			reply = do_read_header(fsg, bh);
++		break;
++
++	case READ_TOC:
++		if (!mod_data.cdrom)
++			goto unknown_cmnd;
++		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
++		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
++				(7<<6) | (1<<1), 1,
++				"READ TOC")) == 0)
++			reply = do_read_toc(fsg, bh);
++		break;
++
++	case READ_FORMAT_CAPACITIES:
++		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
++		if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
++				(3<<7), 1,
++				"READ FORMAT CAPACITIES")) == 0)
++			reply = do_read_format_capacities(fsg, bh);
++		break;
++
++	case REQUEST_SENSE:
++		fsg->data_size_from_cmnd = fsg->cmnd[4];
++		if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
++				(1<<4), 0,
++				"REQUEST SENSE")) == 0)
++			reply = do_request_sense(fsg, bh);
++		break;
++
++	case START_STOP:
++		fsg->data_size_from_cmnd = 0;
++		if ((reply = check_command(fsg, 6, DATA_DIR_NONE,
++				(1<<1) | (1<<4), 0,
++				"START-STOP UNIT")) == 0)
++			reply = do_start_stop(fsg);
++		break;
++
++	case SYNCHRONIZE_CACHE:
++		fsg->data_size_from_cmnd = 0;
++		if ((reply = check_command(fsg, 10, DATA_DIR_NONE,
++				(0xf<<2) | (3<<7), 1,
++				"SYNCHRONIZE CACHE")) == 0)
++			reply = do_synchronize_cache(fsg);
++		break;
++
++	case TEST_UNIT_READY:
++		fsg->data_size_from_cmnd = 0;
++		reply = check_command(fsg, 6, DATA_DIR_NONE,
++				0, 1,
++				"TEST UNIT READY");
++		break;
++
++	/* Although optional, this command is used by MS-Windows.  We
++	 * support a minimal version: BytChk must be 0. */
++	case VERIFY:
++		fsg->data_size_from_cmnd = 0;
++		if ((reply = check_command(fsg, 10, DATA_DIR_NONE,
++				(1<<1) | (0xf<<2) | (3<<7), 1,
++				"VERIFY")) == 0)
++			reply = do_verify(fsg);
++		break;
++
++	case WRITE_6:
++		i = fsg->cmnd[4];
++		fsg->data_size_from_cmnd = (i == 0) ? 256 : i;
++		if ((reply = check_command_size_in_blocks(fsg, 6,
++				DATA_DIR_FROM_HOST,
++				(7<<1) | (1<<4), 1,
++				"WRITE(6)")) == 0)
++			reply = do_write(fsg);
++		break;
++
++	case WRITE_10:
++		fsg->data_size_from_cmnd = get_unaligned_be16(&fsg->cmnd[7]);
++		if ((reply = check_command_size_in_blocks(fsg, 10,
++				DATA_DIR_FROM_HOST,
++				(1<<1) | (0xf<<2) | (3<<7), 1,
++				"WRITE(10)")) == 0)
++			reply = do_write(fsg);
++		break;
++
++	case WRITE_12:
++		fsg->data_size_from_cmnd = get_unaligned_be32(&fsg->cmnd[6]);
++		if ((reply = check_command_size_in_blocks(fsg, 12,
++				DATA_DIR_FROM_HOST,
++				(1<<1) | (0xf<<2) | (0xf<<6), 1,
++				"WRITE(12)")) == 0)
++			reply = do_write(fsg);
++		break;
++
++	/* Some mandatory commands that we recognize but don't implement.
++	 * They don't mean much in this setting.  It's left as an exercise
++	 * for anyone interested to implement RESERVE and RELEASE in terms
++	 * of Posix locks. */
++	case FORMAT_UNIT:
++	case RELEASE:
++	case RESERVE:
++	case SEND_DIAGNOSTIC:
++		// Fall through
++
++	default:
++ unknown_cmnd:
++		fsg->data_size_from_cmnd = 0;
++		sprintf(unknown, "Unknown x%02x", fsg->cmnd[0]);
++		if ((reply = check_command(fsg, fsg->cmnd_size,
++				DATA_DIR_UNKNOWN, ~0, 0, unknown)) == 0) {
++			fsg->curlun->sense_data = SS_INVALID_COMMAND;
++			reply = -EINVAL;
++		}
++		break;
++	}
++	up_read(&fsg->filesem);
++
++	if (reply == -EINTR || signal_pending(current))
++		return -EINTR;
++
++	/* Set up the single reply buffer for finish_reply() */
++	if (reply == -EINVAL)
++		reply = 0;		// Error reply length
++	if (reply >= 0 && fsg->data_dir == DATA_DIR_TO_HOST) {
++		reply = min((u32) reply, fsg->data_size_from_cmnd);
++		bh->inreq->length = reply;
++		bh->state = BUF_STATE_FULL;
++		fsg->residue -= reply;
++	}				// Otherwise it's already set
++
++	return 0;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
++{
++	struct usb_request		*req = bh->outreq;
++	struct bulk_cb_wrap	*cbw = req->buf;
++
++	/* Was this a real packet?  Should it be ignored? */
++	if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
++		return -EINVAL;
++
++	/* Is the CBW valid? */
++	if (req->actual != US_BULK_CB_WRAP_LEN ||
++			cbw->Signature != cpu_to_le32(
++				US_BULK_CB_SIGN)) {
++		DBG(fsg, "invalid CBW: len %u sig 0x%x\n",
++				req->actual,
++				le32_to_cpu(cbw->Signature));
++
++		/* The Bulk-only spec says we MUST stall the IN endpoint
++		 * (6.6.1), so it's unavoidable.  It also says we must
++		 * retain this state until the next reset, but there's
++		 * no way to tell the controller driver it should ignore
++		 * Clear-Feature(HALT) requests.
++		 *
++		 * We aren't required to halt the OUT endpoint; instead
++		 * we can simply accept and discard any data received
++		 * until the next reset. */
++		wedge_bulk_in_endpoint(fsg);
++		set_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
++		return -EINVAL;
++	}
++
++	/* Is the CBW meaningful? */
++	if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~US_BULK_FLAG_IN ||
++			cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) {
++		DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "
++				"cmdlen %u\n",
++				cbw->Lun, cbw->Flags, cbw->Length);
++
++		/* We can do anything we want here, so let's stall the
++		 * bulk pipes if we are allowed to. */
++		if (mod_data.can_stall) {
++			fsg_set_halt(fsg, fsg->bulk_out);
++			halt_bulk_in_endpoint(fsg);
++		}
++		return -EINVAL;
++	}
++
++	/* Save the command for later */
++	fsg->cmnd_size = cbw->Length;
++	memcpy(fsg->cmnd, cbw->CDB, fsg->cmnd_size);
++	if (cbw->Flags & US_BULK_FLAG_IN)
++		fsg->data_dir = DATA_DIR_TO_HOST;
++	else
++		fsg->data_dir = DATA_DIR_FROM_HOST;
++	fsg->data_size = le32_to_cpu(cbw->DataTransferLength);
++	if (fsg->data_size == 0)
++		fsg->data_dir = DATA_DIR_NONE;
++	fsg->lun = cbw->Lun;
++	fsg->tag = cbw->Tag;
++	return 0;
++}
++
++
++static int get_next_command(struct fsg_dev *fsg)
++{
++	struct fsg_buffhd	*bh;
++	int			rc = 0;
++
++	if (transport_is_bbb()) {
++
++		/* Wait for the next buffer to become available */
++		bh = fsg->next_buffhd_to_fill;
++		while (bh->state != BUF_STATE_EMPTY) {
++			rc = sleep_thread(fsg);
++			if (rc)
++				return rc;
++		}
++
++		/* Queue a request to read a Bulk-only CBW */
++		set_bulk_out_req_length(fsg, bh, US_BULK_CB_WRAP_LEN);
++		start_transfer(fsg, fsg->bulk_out, bh->outreq,
++				&bh->outreq_busy, &bh->state);
++
++		/* We will drain the buffer in software, which means we
++		 * can reuse it for the next filling.  No need to advance
++		 * next_buffhd_to_fill. */
++
++		/* Wait for the CBW to arrive */
++		while (bh->state != BUF_STATE_FULL) {
++			rc = sleep_thread(fsg);
++			if (rc)
++				return rc;
++		}
++		smp_rmb();
++		rc = received_cbw(fsg, bh);
++		bh->state = BUF_STATE_EMPTY;
++
++	} else {		// USB_PR_CB or USB_PR_CBI
++
++		/* Wait for the next command to arrive */
++		while (fsg->cbbuf_cmnd_size == 0) {
++			rc = sleep_thread(fsg);
++			if (rc)
++				return rc;
++		}
++
++		/* Is the previous status interrupt request still busy?
++		 * The host is allowed to skip reading the status,
++		 * so we must cancel it. */
++		if (fsg->intreq_busy)
++			usb_ep_dequeue(fsg->intr_in, fsg->intreq);
++
++		/* Copy the command and mark the buffer empty */
++		fsg->data_dir = DATA_DIR_UNKNOWN;
++		spin_lock_irq(&fsg->lock);
++		fsg->cmnd_size = fsg->cbbuf_cmnd_size;
++		memcpy(fsg->cmnd, fsg->cbbuf_cmnd, fsg->cmnd_size);
++		fsg->cbbuf_cmnd_size = 0;
++		spin_unlock_irq(&fsg->lock);
++
++		/* Use LUN from the command */
++		fsg->lun = fsg->cmnd[1] >> 5;
++	}
++
++	/* Update current lun */
++	if (fsg->lun >= 0 && fsg->lun < fsg->nluns)
++		fsg->curlun = &fsg->luns[fsg->lun];
++	else
++		fsg->curlun = NULL;
++
++	return rc;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int enable_endpoint(struct fsg_dev *fsg, struct usb_ep *ep,
++		const struct usb_endpoint_descriptor *d)
++{
++	int	rc;
++
++	ep->driver_data = fsg;
++	ep->desc = d;
++	rc = usb_ep_enable(ep);
++	if (rc)
++		ERROR(fsg, "can't enable %s, result %d\n", ep->name, rc);
++	return rc;
++}
++
++static int alloc_request(struct fsg_dev *fsg, struct usb_ep *ep,
++		struct usb_request **preq)
++{
++	*preq = usb_ep_alloc_request(ep, GFP_ATOMIC);
++	if (*preq)
++		return 0;
++	ERROR(fsg, "can't allocate request for %s\n", ep->name);
++	return -ENOMEM;
++}
++
++/*
++ * Reset interface setting and re-init endpoint state (toggle etc).
++ * Call with altsetting < 0 to disable the interface.  The only other
++ * available altsetting is 0, which enables the interface.
++ */
++static int do_set_interface(struct fsg_dev *fsg, int altsetting)
++{
++	int	rc = 0;
++	int	i;
++	const struct usb_endpoint_descriptor	*d;
++
++	if (fsg->running)
++		DBG(fsg, "reset interface\n");
++
++reset:
++	/* Deallocate the requests */
++	for (i = 0; i < fsg_num_buffers; ++i) {
++		struct fsg_buffhd *bh = &fsg->buffhds[i];
++
++		if (bh->inreq) {
++			usb_ep_free_request(fsg->bulk_in, bh->inreq);
++			bh->inreq = NULL;
++		}
++		if (bh->outreq) {
++			usb_ep_free_request(fsg->bulk_out, bh->outreq);
++			bh->outreq = NULL;
++		}
++	}
++	if (fsg->intreq) {
++		usb_ep_free_request(fsg->intr_in, fsg->intreq);
++		fsg->intreq = NULL;
++	}
++
++	/* Disable the endpoints */
++	if (fsg->bulk_in_enabled) {
++		usb_ep_disable(fsg->bulk_in);
++		fsg->bulk_in_enabled = 0;
++	}
++	if (fsg->bulk_out_enabled) {
++		usb_ep_disable(fsg->bulk_out);
++		fsg->bulk_out_enabled = 0;
++	}
++	if (fsg->intr_in_enabled) {
++		usb_ep_disable(fsg->intr_in);
++		fsg->intr_in_enabled = 0;
++	}
++
++	fsg->running = 0;
++	if (altsetting < 0 || rc != 0)
++		return rc;
++
++	DBG(fsg, "set interface %d\n", altsetting);
++
++	/* Enable the endpoints */
++	d = fsg_ep_desc(fsg->gadget,
++			&fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc,
++			&fsg_ss_bulk_in_desc);
++	if ((rc = enable_endpoint(fsg, fsg->bulk_in, d)) != 0)
++		goto reset;
++	fsg->bulk_in_enabled = 1;
++
++	d = fsg_ep_desc(fsg->gadget,
++			&fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc,
++			&fsg_ss_bulk_out_desc);
++	if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0)
++		goto reset;
++	fsg->bulk_out_enabled = 1;
++	fsg->bulk_out_maxpacket = usb_endpoint_maxp(d);
++	clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
++
++	if (transport_is_cbi()) {
++		d = fsg_ep_desc(fsg->gadget,
++				&fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc,
++				&fsg_ss_intr_in_desc);
++		if ((rc = enable_endpoint(fsg, fsg->intr_in, d)) != 0)
++			goto reset;
++		fsg->intr_in_enabled = 1;
++	}
++
++	/* Allocate the requests */
++	for (i = 0; i < fsg_num_buffers; ++i) {
++		struct fsg_buffhd	*bh = &fsg->buffhds[i];
++
++		if ((rc = alloc_request(fsg, fsg->bulk_in, &bh->inreq)) != 0)
++			goto reset;
++		if ((rc = alloc_request(fsg, fsg->bulk_out, &bh->outreq)) != 0)
++			goto reset;
++		bh->inreq->buf = bh->outreq->buf = bh->buf;
++		bh->inreq->context = bh->outreq->context = bh;
++		bh->inreq->complete = bulk_in_complete;
++		bh->outreq->complete = bulk_out_complete;
++	}
++	if (transport_is_cbi()) {
++		if ((rc = alloc_request(fsg, fsg->intr_in, &fsg->intreq)) != 0)
++			goto reset;
++		fsg->intreq->complete = intr_in_complete;
++	}
++
++	fsg->running = 1;
++	for (i = 0; i < fsg->nluns; ++i)
++		fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED;
++	return rc;
++}
++
++
++/*
++ * Change our operational configuration.  This code must agree with the code
++ * that returns config descriptors, and with interface altsetting code.
++ *
++ * It's also responsible for power management interactions.  Some
++ * configurations might not work with our current power sources.
++ * For now we just assume the gadget is always self-powered.
++ */
++static int do_set_config(struct fsg_dev *fsg, u8 new_config)
++{
++	int	rc = 0;
++
++	/* Disable the single interface */
++	if (fsg->config != 0) {
++		DBG(fsg, "reset config\n");
++		fsg->config = 0;
++		rc = do_set_interface(fsg, -1);
++	}
++
++	/* Enable the interface */
++	if (new_config != 0) {
++		fsg->config = new_config;
++		if ((rc = do_set_interface(fsg, 0)) != 0)
++			fsg->config = 0;	// Reset on errors
++		else
++			INFO(fsg, "%s config #%d\n",
++			     usb_speed_string(fsg->gadget->speed),
++			     fsg->config);
++	}
++	return rc;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static void handle_exception(struct fsg_dev *fsg)
++{
++	siginfo_t		info;
++	int			sig;
++	int			i;
++	int			num_active;
++	struct fsg_buffhd	*bh;
++	enum fsg_state		old_state;
++	u8			new_config;
++	struct fsg_lun		*curlun;
++	unsigned int		exception_req_tag;
++	int			rc;
++
++	/* Clear the existing signals.  Anything but SIGUSR1 is converted
++	 * into a high-priority EXIT exception. */
++	for (;;) {
++		sig = dequeue_signal_lock(current, &current->blocked, &info);
++		if (!sig)
++			break;
++		if (sig != SIGUSR1) {
++			if (fsg->state < FSG_STATE_EXIT)
++				DBG(fsg, "Main thread exiting on signal\n");
++			raise_exception(fsg, FSG_STATE_EXIT);
++		}
++	}
++
++	/* Cancel all the pending transfers */
++	if (fsg->intreq_busy)
++		usb_ep_dequeue(fsg->intr_in, fsg->intreq);
++	for (i = 0; i < fsg_num_buffers; ++i) {
++		bh = &fsg->buffhds[i];
++		if (bh->inreq_busy)
++			usb_ep_dequeue(fsg->bulk_in, bh->inreq);
++		if (bh->outreq_busy)
++			usb_ep_dequeue(fsg->bulk_out, bh->outreq);
++	}
++
++	/* Wait until everything is idle */
++	for (;;) {
++		num_active = fsg->intreq_busy;
++		for (i = 0; i < fsg_num_buffers; ++i) {
++			bh = &fsg->buffhds[i];
++			num_active += bh->inreq_busy + bh->outreq_busy;
++		}
++		if (num_active == 0)
++			break;
++		if (sleep_thread(fsg))
++			return;
++	}
++
++	/* Clear out the controller's fifos */
++	if (fsg->bulk_in_enabled)
++		usb_ep_fifo_flush(fsg->bulk_in);
++	if (fsg->bulk_out_enabled)
++		usb_ep_fifo_flush(fsg->bulk_out);
++	if (fsg->intr_in_enabled)
++		usb_ep_fifo_flush(fsg->intr_in);
++
++	/* Reset the I/O buffer states and pointers, the SCSI
++	 * state, and the exception.  Then invoke the handler. */
++	spin_lock_irq(&fsg->lock);
++
++	for (i = 0; i < fsg_num_buffers; ++i) {
++		bh = &fsg->buffhds[i];
++		bh->state = BUF_STATE_EMPTY;
++	}
++	fsg->next_buffhd_to_fill = fsg->next_buffhd_to_drain =
++			&fsg->buffhds[0];
++
++	exception_req_tag = fsg->exception_req_tag;
++	new_config = fsg->new_config;
++	old_state = fsg->state;
++
++	if (old_state == FSG_STATE_ABORT_BULK_OUT)
++		fsg->state = FSG_STATE_STATUS_PHASE;
++	else {
++		for (i = 0; i < fsg->nluns; ++i) {
++			curlun = &fsg->luns[i];
++			curlun->prevent_medium_removal = 0;
++			curlun->sense_data = curlun->unit_attention_data =
++					SS_NO_SENSE;
++			curlun->sense_data_info = 0;
++			curlun->info_valid = 0;
++		}
++		fsg->state = FSG_STATE_IDLE;
++	}
++	spin_unlock_irq(&fsg->lock);
++
++	/* Carry out any extra actions required for the exception */
++	switch (old_state) {
++	default:
++		break;
++
++	case FSG_STATE_ABORT_BULK_OUT:
++		send_status(fsg);
++		spin_lock_irq(&fsg->lock);
++		if (fsg->state == FSG_STATE_STATUS_PHASE)
++			fsg->state = FSG_STATE_IDLE;
++		spin_unlock_irq(&fsg->lock);
++		break;
++
++	case FSG_STATE_RESET:
++		/* In case we were forced against our will to halt a
++		 * bulk endpoint, clear the halt now.  (The SuperH UDC
++		 * requires this.) */
++		if (test_and_clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
++			usb_ep_clear_halt(fsg->bulk_in);
++
++		if (transport_is_bbb()) {
++			if (fsg->ep0_req_tag == exception_req_tag)
++				ep0_queue(fsg);	// Complete the status stage
++
++		} else if (transport_is_cbi())
++			send_status(fsg);	// Status by interrupt pipe
++
++		/* Technically this should go here, but it would only be
++		 * a waste of time.  Ditto for the INTERFACE_CHANGE and
++		 * CONFIG_CHANGE cases. */
++		// for (i = 0; i < fsg->nluns; ++i)
++		//	fsg->luns[i].unit_attention_data = SS_RESET_OCCURRED;
++		break;
++
++	case FSG_STATE_INTERFACE_CHANGE:
++		rc = do_set_interface(fsg, 0);
++		if (fsg->ep0_req_tag != exception_req_tag)
++			break;
++		if (rc != 0)			// STALL on errors
++			fsg_set_halt(fsg, fsg->ep0);
++		else				// Complete the status stage
++			ep0_queue(fsg);
++		break;
++
++	case FSG_STATE_CONFIG_CHANGE:
++		rc = do_set_config(fsg, new_config);
++		if (fsg->ep0_req_tag != exception_req_tag)
++			break;
++		if (rc != 0)			// STALL on errors
++			fsg_set_halt(fsg, fsg->ep0);
++		else				// Complete the status stage
++			ep0_queue(fsg);
++		break;
++
++	case FSG_STATE_DISCONNECT:
++		for (i = 0; i < fsg->nluns; ++i)
++			fsg_lun_fsync_sub(fsg->luns + i);
++		do_set_config(fsg, 0);		// Unconfigured state
++		break;
++
++	case FSG_STATE_EXIT:
++	case FSG_STATE_TERMINATED:
++		do_set_config(fsg, 0);			// Free resources
++		spin_lock_irq(&fsg->lock);
++		fsg->state = FSG_STATE_TERMINATED;	// Stop the thread
++		spin_unlock_irq(&fsg->lock);
++		break;
++	}
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static int fsg_main_thread(void *fsg_)
++{
++	struct fsg_dev		*fsg = fsg_;
++
++	/* Allow the thread to be killed by a signal, but set the signal mask
++	 * to block everything but INT, TERM, KILL, and USR1. */
++	allow_signal(SIGINT);
++	allow_signal(SIGTERM);
++	allow_signal(SIGKILL);
++	allow_signal(SIGUSR1);
++
++	/* Allow the thread to be frozen */
++	set_freezable();
++
++	/* Arrange for userspace references to be interpreted as kernel
++	 * pointers.  That way we can pass a kernel pointer to a routine
++	 * that expects a __user pointer and it will work okay. */
++	set_fs(get_ds());
++
++	/* The main loop */
++	while (fsg->state != FSG_STATE_TERMINATED) {
++		if (exception_in_progress(fsg) || signal_pending(current)) {
++			handle_exception(fsg);
++			continue;
++		}
++
++		if (!fsg->running) {
++			sleep_thread(fsg);
++			continue;
++		}
++
++		if (get_next_command(fsg))
++			continue;
++
++		spin_lock_irq(&fsg->lock);
++		if (!exception_in_progress(fsg))
++			fsg->state = FSG_STATE_DATA_PHASE;
++		spin_unlock_irq(&fsg->lock);
++
++		if (do_scsi_command(fsg) || finish_reply(fsg))
++			continue;
++
++		spin_lock_irq(&fsg->lock);
++		if (!exception_in_progress(fsg))
++			fsg->state = FSG_STATE_STATUS_PHASE;
++		spin_unlock_irq(&fsg->lock);
++
++		if (send_status(fsg))
++			continue;
++
++		spin_lock_irq(&fsg->lock);
++		if (!exception_in_progress(fsg))
++			fsg->state = FSG_STATE_IDLE;
++		spin_unlock_irq(&fsg->lock);
++		}
++
++	spin_lock_irq(&fsg->lock);
++	fsg->thread_task = NULL;
++	spin_unlock_irq(&fsg->lock);
++
++	/* If we are exiting because of a signal, unregister the
++	 * gadget driver. */
++	if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags))
++		usb_gadget_unregister_driver(&fsg_driver);
++
++	/* Let the unbind and cleanup routines know the thread has exited */
++	complete_and_exit(&fsg->thread_notifier, 0);
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++
++/* The write permissions and store_xxx pointers are set in fsg_bind() */
++static DEVICE_ATTR(ro, 0444, fsg_show_ro, NULL);
++static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, NULL);
++static DEVICE_ATTR(file, 0444, fsg_show_file, NULL);
++
++
++/*-------------------------------------------------------------------------*/
++
++static void fsg_release(struct kref *ref)
++{
++	struct fsg_dev	*fsg = container_of(ref, struct fsg_dev, ref);
++
++	kfree(fsg->luns);
++	kfree(fsg);
++}
++
++static void lun_release(struct device *dev)
++{
++	struct rw_semaphore	*filesem = dev_get_drvdata(dev);
++	struct fsg_dev		*fsg =
++		container_of(filesem, struct fsg_dev, filesem);
++
++	kref_put(&fsg->ref, fsg_release);
++}
++
++static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
++{
++	struct fsg_dev		*fsg = get_gadget_data(gadget);
++	int			i;
++	struct fsg_lun		*curlun;
++	struct usb_request	*req = fsg->ep0req;
++
++	DBG(fsg, "unbind\n");
++	clear_bit(REGISTERED, &fsg->atomic_bitflags);
++
++	/* If the thread isn't already dead, tell it to exit now */
++	if (fsg->state != FSG_STATE_TERMINATED) {
++		raise_exception(fsg, FSG_STATE_EXIT);
++		wait_for_completion(&fsg->thread_notifier);
++
++		/* The cleanup routine waits for this completion also */
++		complete(&fsg->thread_notifier);
++	}
++
++	/* Unregister the sysfs attribute files and the LUNs */
++	for (i = 0; i < fsg->nluns; ++i) {
++		curlun = &fsg->luns[i];
++		if (curlun->registered) {
++			device_remove_file(&curlun->dev, &dev_attr_nofua);
++			device_remove_file(&curlun->dev, &dev_attr_ro);
++			device_remove_file(&curlun->dev, &dev_attr_file);
++			fsg_lun_close(curlun);
++			device_unregister(&curlun->dev);
++			curlun->registered = 0;
++		}
++	}
++
++	/* Free the data buffers */
++	for (i = 0; i < fsg_num_buffers; ++i)
++		kfree(fsg->buffhds[i].buf);
++
++	/* Free the request and buffer for endpoint 0 */
++	if (req) {
++		kfree(req->buf);
++		usb_ep_free_request(fsg->ep0, req);
++	}
++
++	set_gadget_data(gadget, NULL);
++}
++
++
++static int __init check_parameters(struct fsg_dev *fsg)
++{
++	int	prot;
++	int	gcnum;
++
++	/* Store the default values */
++	mod_data.transport_type = USB_PR_BULK;
++	mod_data.transport_name = "Bulk-only";
++	mod_data.protocol_type = USB_SC_SCSI;
++	mod_data.protocol_name = "Transparent SCSI";
++
++	/* Some peripheral controllers are known not to be able to
++	 * halt bulk endpoints correctly.  If one of them is present,
++	 * disable stalls.
++	 */
++	if (gadget_is_at91(fsg->gadget))
++		mod_data.can_stall = 0;
++
++	if (mod_data.release == 0xffff) {	// Parameter wasn't set
++		gcnum = usb_gadget_controller_number(fsg->gadget);
++		if (gcnum >= 0)
++			mod_data.release = 0x0300 + gcnum;
++		else {
++			WARNING(fsg, "controller '%s' not recognized\n",
++				fsg->gadget->name);
++			mod_data.release = 0x0399;
++		}
++	}
++
++	prot = simple_strtol(mod_data.protocol_parm, NULL, 0);
++
++#ifdef CONFIG_USB_FILE_STORAGE_TEST
++	if (strnicmp(mod_data.transport_parm, "BBB", 10) == 0) {
++		;		// Use default setting
++	} else if (strnicmp(mod_data.transport_parm, "CB", 10) == 0) {
++		mod_data.transport_type = USB_PR_CB;
++		mod_data.transport_name = "Control-Bulk";
++	} else if (strnicmp(mod_data.transport_parm, "CBI", 10) == 0) {
++		mod_data.transport_type = USB_PR_CBI;
++		mod_data.transport_name = "Control-Bulk-Interrupt";
++	} else {
++		ERROR(fsg, "invalid transport: %s\n", mod_data.transport_parm);
++		return -EINVAL;
++	}
++
++	if (strnicmp(mod_data.protocol_parm, "SCSI", 10) == 0 ||
++			prot == USB_SC_SCSI) {
++		;		// Use default setting
++	} else if (strnicmp(mod_data.protocol_parm, "RBC", 10) == 0 ||
++			prot == USB_SC_RBC) {
++		mod_data.protocol_type = USB_SC_RBC;
++		mod_data.protocol_name = "RBC";
++	} else if (strnicmp(mod_data.protocol_parm, "8020", 4) == 0 ||
++			strnicmp(mod_data.protocol_parm, "ATAPI", 10) == 0 ||
++			prot == USB_SC_8020) {
++		mod_data.protocol_type = USB_SC_8020;
++		mod_data.protocol_name = "8020i (ATAPI)";
++	} else if (strnicmp(mod_data.protocol_parm, "QIC", 3) == 0 ||
++			prot == USB_SC_QIC) {
++		mod_data.protocol_type = USB_SC_QIC;
++		mod_data.protocol_name = "QIC-157";
++	} else if (strnicmp(mod_data.protocol_parm, "UFI", 10) == 0 ||
++			prot == USB_SC_UFI) {
++		mod_data.protocol_type = USB_SC_UFI;
++		mod_data.protocol_name = "UFI";
++	} else if (strnicmp(mod_data.protocol_parm, "8070", 4) == 0 ||
++			prot == USB_SC_8070) {
++		mod_data.protocol_type = USB_SC_8070;
++		mod_data.protocol_name = "8070i";
++	} else {
++		ERROR(fsg, "invalid protocol: %s\n", mod_data.protocol_parm);
++		return -EINVAL;
++	}
++
++	mod_data.buflen &= PAGE_CACHE_MASK;
++	if (mod_data.buflen <= 0) {
++		ERROR(fsg, "invalid buflen\n");
++		return -ETOOSMALL;
++	}
++
++#endif /* CONFIG_USB_FILE_STORAGE_TEST */
++
++	/* Serial string handling.
++	 * On a real device, the serial string would be loaded
++	 * from permanent storage. */
++	if (mod_data.serial) {
++		const char *ch;
++		unsigned len = 0;
++
++		/* Sanity check :
++		 * The CB[I] specification limits the serial string to
++		 * 12 uppercase hexadecimal characters.
++		 * BBB need at least 12 uppercase hexadecimal characters,
++		 * with a maximum of 126. */
++		for (ch = mod_data.serial; *ch; ++ch) {
++			++len;
++			if ((*ch < '0' || *ch > '9') &&
++			    (*ch < 'A' || *ch > 'F')) { /* not uppercase hex */
++				WARNING(fsg,
++					"Invalid serial string character: %c\n",
++					*ch);
++				goto no_serial;
++			}
++		}
++		if (len > 126 ||
++		    (mod_data.transport_type == USB_PR_BULK && len < 12) ||
++		    (mod_data.transport_type != USB_PR_BULK && len > 12)) {
++			WARNING(fsg, "Invalid serial string length!\n");
++			goto no_serial;
++		}
++		fsg_strings[FSG_STRING_SERIAL - 1].s = mod_data.serial;
++	} else {
++		WARNING(fsg, "No serial-number string provided!\n");
++ no_serial:
++		device_desc.iSerialNumber = 0;
++	}
++
++	return 0;
++}
++
++
++static int __init fsg_bind(struct usb_gadget *gadget)
++{
++	struct fsg_dev		*fsg = the_fsg;
++	int			rc;
++	int			i;
++	struct fsg_lun		*curlun;
++	struct usb_ep		*ep;
++	struct usb_request	*req;
++	char			*pathbuf, *p;
++
++	fsg->gadget = gadget;
++	set_gadget_data(gadget, fsg);
++	fsg->ep0 = gadget->ep0;
++	fsg->ep0->driver_data = fsg;
++
++	if ((rc = check_parameters(fsg)) != 0)
++		goto out;
++
++	if (mod_data.removable) {	// Enable the store_xxx attributes
++		dev_attr_file.attr.mode = 0644;
++		dev_attr_file.store = fsg_store_file;
++		if (!mod_data.cdrom) {
++			dev_attr_ro.attr.mode = 0644;
++			dev_attr_ro.store = fsg_store_ro;
++		}
++	}
++
++	/* Only for removable media? */
++	dev_attr_nofua.attr.mode = 0644;
++	dev_attr_nofua.store = fsg_store_nofua;
++
++	/* Find out how many LUNs there should be */
++	i = mod_data.nluns;
++	if (i == 0)
++		i = max(mod_data.num_filenames, 1u);
++	if (i > FSG_MAX_LUNS) {
++		ERROR(fsg, "invalid number of LUNs: %d\n", i);
++		rc = -EINVAL;
++		goto out;
++	}
++
++	/* Create the LUNs, open their backing files, and register the
++	 * LUN devices in sysfs. */
++	fsg->luns = kzalloc(i * sizeof(struct fsg_lun), GFP_KERNEL);
++	if (!fsg->luns) {
++		rc = -ENOMEM;
++		goto out;
++	}
++	fsg->nluns = i;
++
++	for (i = 0; i < fsg->nluns; ++i) {
++		curlun = &fsg->luns[i];
++		curlun->cdrom = !!mod_data.cdrom;
++		curlun->ro = mod_data.cdrom || mod_data.ro[i];
++		curlun->initially_ro = curlun->ro;
++		curlun->removable = mod_data.removable;
++		curlun->nofua = mod_data.nofua[i];
++		curlun->dev.release = lun_release;
++		curlun->dev.parent = &gadget->dev;
++		curlun->dev.driver = &fsg_driver.driver;
++		dev_set_drvdata(&curlun->dev, &fsg->filesem);
++		dev_set_name(&curlun->dev,"%s-lun%d",
++			     dev_name(&gadget->dev), i);
++
++		kref_get(&fsg->ref);
++		rc = device_register(&curlun->dev);
++		if (rc) {
++			INFO(fsg, "failed to register LUN%d: %d\n", i, rc);
++			put_device(&curlun->dev);
++			goto out;
++		}
++		curlun->registered = 1;
++
++		rc = device_create_file(&curlun->dev, &dev_attr_ro);
++		if (rc)
++			goto out;
++		rc = device_create_file(&curlun->dev, &dev_attr_nofua);
++		if (rc)
++			goto out;
++		rc = device_create_file(&curlun->dev, &dev_attr_file);
++		if (rc)
++			goto out;
++
++		if (mod_data.file[i] && *mod_data.file[i]) {
++			rc = fsg_lun_open(curlun, mod_data.file[i]);
++			if (rc)
++				goto out;
++		} else if (!mod_data.removable) {
++			ERROR(fsg, "no file given for LUN%d\n", i);
++			rc = -EINVAL;
++			goto out;
++		}
++	}
++
++	/* Find all the endpoints we will use */
++	usb_ep_autoconfig_reset(gadget);
++	ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_in_desc);
++	if (!ep)
++		goto autoconf_fail;
++	ep->driver_data = fsg;		// claim the endpoint
++	fsg->bulk_in = ep;
++
++	ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_out_desc);
++	if (!ep)
++		goto autoconf_fail;
++	ep->driver_data = fsg;		// claim the endpoint
++	fsg->bulk_out = ep;
++
++	if (transport_is_cbi()) {
++		ep = usb_ep_autoconfig(gadget, &fsg_fs_intr_in_desc);
++		if (!ep)
++			goto autoconf_fail;
++		ep->driver_data = fsg;		// claim the endpoint
++		fsg->intr_in = ep;
++	}
++
++	/* Fix up the descriptors */
++	device_desc.idVendor = cpu_to_le16(mod_data.vendor);
++	device_desc.idProduct = cpu_to_le16(mod_data.product);
++	device_desc.bcdDevice = cpu_to_le16(mod_data.release);
++
++	i = (transport_is_cbi() ? 3 : 2);	// Number of endpoints
++	fsg_intf_desc.bNumEndpoints = i;
++	fsg_intf_desc.bInterfaceSubClass = mod_data.protocol_type;
++	fsg_intf_desc.bInterfaceProtocol = mod_data.transport_type;
++	fsg_fs_function[i + FSG_FS_FUNCTION_PRE_EP_ENTRIES] = NULL;
++
++	if (gadget_is_dualspeed(gadget)) {
++		fsg_hs_function[i + FSG_HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
++
++		/* Assume endpoint addresses are the same for both speeds */
++		fsg_hs_bulk_in_desc.bEndpointAddress =
++			fsg_fs_bulk_in_desc.bEndpointAddress;
++		fsg_hs_bulk_out_desc.bEndpointAddress =
++			fsg_fs_bulk_out_desc.bEndpointAddress;
++		fsg_hs_intr_in_desc.bEndpointAddress =
++			fsg_fs_intr_in_desc.bEndpointAddress;
++	}
++
++	if (gadget_is_superspeed(gadget)) {
++		unsigned		max_burst;
++
++		fsg_ss_function[i + FSG_SS_FUNCTION_PRE_EP_ENTRIES] = NULL;
++
++		/* Calculate bMaxBurst, we know packet size is 1024 */
++		max_burst = min_t(unsigned, mod_data.buflen / 1024, 15);
++
++		/* Assume endpoint addresses are the same for both speeds */
++		fsg_ss_bulk_in_desc.bEndpointAddress =
++			fsg_fs_bulk_in_desc.bEndpointAddress;
++		fsg_ss_bulk_in_comp_desc.bMaxBurst = max_burst;
++
++		fsg_ss_bulk_out_desc.bEndpointAddress =
++			fsg_fs_bulk_out_desc.bEndpointAddress;
++		fsg_ss_bulk_out_comp_desc.bMaxBurst = max_burst;
++	}
++
++	if (gadget_is_otg(gadget))
++		fsg_otg_desc.bmAttributes |= USB_OTG_HNP;
++
++	rc = -ENOMEM;
++
++	/* Allocate the request and buffer for endpoint 0 */
++	fsg->ep0req = req = usb_ep_alloc_request(fsg->ep0, GFP_KERNEL);
++	if (!req)
++		goto out;
++	req->buf = kmalloc(EP0_BUFSIZE, GFP_KERNEL);
++	if (!req->buf)
++		goto out;
++	req->complete = ep0_complete;
++
++	/* Allocate the data buffers */
++	for (i = 0; i < fsg_num_buffers; ++i) {
++		struct fsg_buffhd	*bh = &fsg->buffhds[i];
++
++		/* Allocate for the bulk-in endpoint.  We assume that
++		 * the buffer will also work with the bulk-out (and
++		 * interrupt-in) endpoint. */
++		bh->buf = kmalloc(mod_data.buflen, GFP_KERNEL);
++		if (!bh->buf)
++			goto out;
++		bh->next = bh + 1;
++	}
++	fsg->buffhds[fsg_num_buffers - 1].next = &fsg->buffhds[0];
++
++	/* This should reflect the actual gadget power source */
++	usb_gadget_set_selfpowered(gadget);
++
++	snprintf(fsg_string_manufacturer, sizeof fsg_string_manufacturer,
++			"%s %s with %s",
++			init_utsname()->sysname, init_utsname()->release,
++			gadget->name);
++
++	fsg->thread_task = kthread_create(fsg_main_thread, fsg,
++			"file-storage-gadget");
++	if (IS_ERR(fsg->thread_task)) {
++		rc = PTR_ERR(fsg->thread_task);
++		goto out;
++	}
++
++	INFO(fsg, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
++	INFO(fsg, "NOTE: This driver is deprecated.  "
++			"Consider using g_mass_storage instead.\n");
++	INFO(fsg, "Number of LUNs=%d\n", fsg->nluns);
++
++	pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
++	for (i = 0; i < fsg->nluns; ++i) {
++		curlun = &fsg->luns[i];
++		if (fsg_lun_is_open(curlun)) {
++			p = NULL;
++			if (pathbuf) {
++				p = d_path(&curlun->filp->f_path,
++					   pathbuf, PATH_MAX);
++				if (IS_ERR(p))
++					p = NULL;
++			}
++			LINFO(curlun, "ro=%d, nofua=%d, file: %s\n",
++			      curlun->ro, curlun->nofua, (p ? p : "(error)"));
++		}
++	}
++	kfree(pathbuf);
++
++	DBG(fsg, "transport=%s (x%02x)\n",
++			mod_data.transport_name, mod_data.transport_type);
++	DBG(fsg, "protocol=%s (x%02x)\n",
++			mod_data.protocol_name, mod_data.protocol_type);
++	DBG(fsg, "VendorID=x%04x, ProductID=x%04x, Release=x%04x\n",
++			mod_data.vendor, mod_data.product, mod_data.release);
++	DBG(fsg, "removable=%d, stall=%d, cdrom=%d, buflen=%u\n",
++			mod_data.removable, mod_data.can_stall,
++			mod_data.cdrom, mod_data.buflen);
++	DBG(fsg, "I/O thread pid: %d\n", task_pid_nr(fsg->thread_task));
++
++	set_bit(REGISTERED, &fsg->atomic_bitflags);
++
++	/* Tell the thread to start working */
++	wake_up_process(fsg->thread_task);
++	return 0;
++
++autoconf_fail:
++	ERROR(fsg, "unable to autoconfigure all endpoints\n");
++	rc = -ENOTSUPP;
++
++out:
++	fsg->state = FSG_STATE_TERMINATED;	// The thread is dead
++	fsg_unbind(gadget);
++	complete(&fsg->thread_notifier);
++	return rc;
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static void fsg_suspend(struct usb_gadget *gadget)
++{
++	struct fsg_dev		*fsg = get_gadget_data(gadget);
++
++	DBG(fsg, "suspend\n");
++	set_bit(SUSPENDED, &fsg->atomic_bitflags);
++}
++
++static void fsg_resume(struct usb_gadget *gadget)
++{
++	struct fsg_dev		*fsg = get_gadget_data(gadget);
++
++	DBG(fsg, "resume\n");
++	clear_bit(SUSPENDED, &fsg->atomic_bitflags);
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static struct usb_gadget_driver		fsg_driver = {
++	.max_speed	= USB_SPEED_SUPER,
++	.function	= (char *) fsg_string_product,
++	.unbind		= fsg_unbind,
++	.disconnect	= fsg_disconnect,
++	.setup		= fsg_setup,
++	.suspend	= fsg_suspend,
++	.resume		= fsg_resume,
++
++	.driver		= {
++		.name		= DRIVER_NAME,
++		.owner		= THIS_MODULE,
++		// .release = ...
++		// .suspend = ...
++		// .resume = ...
++	},
++};
++
++
++static int __init fsg_alloc(void)
++{
++	struct fsg_dev		*fsg;
++
++	fsg = kzalloc(sizeof *fsg +
++		      fsg_num_buffers * sizeof *(fsg->buffhds), GFP_KERNEL);
++
++	if (!fsg)
++		return -ENOMEM;
++	spin_lock_init(&fsg->lock);
++	init_rwsem(&fsg->filesem);
++	kref_init(&fsg->ref);
++	init_completion(&fsg->thread_notifier);
++
++	the_fsg = fsg;
++	return 0;
++}
++
++
++static int __init fsg_init(void)
++{
++	int		rc;
++	struct fsg_dev	*fsg;
++
++	rc = fsg_num_buffers_validate();
++	if (rc != 0)
++		return rc;
++
++	if ((rc = fsg_alloc()) != 0)
++		return rc;
++	fsg = the_fsg;
++	if ((rc = usb_gadget_probe_driver(&fsg_driver, fsg_bind)) != 0)
++		kref_put(&fsg->ref, fsg_release);
++	return rc;
++}
++module_init(fsg_init);
++
++
++static void __exit fsg_cleanup(void)
++{
++	struct fsg_dev	*fsg = the_fsg;
++
++	/* Unregister the driver iff the thread hasn't already done so */
++	if (test_and_clear_bit(REGISTERED, &fsg->atomic_bitflags))
++		usb_gadget_unregister_driver(&fsg_driver);
++
++	/* Wait for the thread to finish up */
++	wait_for_completion(&fsg->thread_notifier);
++
++	kref_put(&fsg->ref, fsg_release);
++}
++module_exit(fsg_cleanup);
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -730,6 +730,16 @@ config USB_RENESAS_USBHS_HCD
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called renesas-usbhs.
+ 
++config USB_DWCOTG
++	bool "Synopsis DWC host support"
++	depends on USB && (FIQ || ARM64)
++	help
++	  The Synopsis DWC controller is a dual-role
++	  host/peripheral/OTG ("On The Go") USB controllers.
++
++	  Enable this option to support this IP in host controller mode.
++	  If unsure, say N.
++
+ config USB_HCD_BCMA
+ 	tristate "BCMA usb host driver"
+ 	depends on BCMA
+--- a/drivers/usb/host/Makefile
++++ b/drivers/usb/host/Makefile
+@@ -77,6 +77,7 @@ obj-$(CONFIG_USB_SL811_HCD)	+= sl811-hcd
+ obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o
+ obj-$(CONFIG_USB_U132_HCD)	+= u132-hcd.o
+ obj-$(CONFIG_USB_R8A66597_HCD)	+= r8a66597-hcd.o
++obj-$(CONFIG_USB_DWCOTG)        += dwc_otg/ dwc_common_port/
+ obj-$(CONFIG_USB_FSL_USB2)	+= fsl-mph-dr-of.o
+ obj-$(CONFIG_USB_EHCI_FSL)	+= fsl-mph-dr-of.o
+ obj-$(CONFIG_USB_EHCI_FSL)	+= ehci-fsl.o
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/Makefile
+@@ -0,0 +1,58 @@
++#
++# Makefile for DWC_common library
++#
++
++ifneq ($(KERNELRELEASE),)
++
++ccflags-y	+= -DDWC_LINUX
++#ccflags-y	+= -DDEBUG
++#ccflags-y	+= -DDWC_DEBUG_REGS
++#ccflags-y	+= -DDWC_DEBUG_MEMORY
++
++ccflags-y	+= -DDWC_LIBMODULE
++ccflags-y	+= -DDWC_CCLIB
++#ccflags-y	+= -DDWC_CRYPTOLIB
++ccflags-y	+= -DDWC_NOTIFYLIB
++ccflags-y	+= -DDWC_UTFLIB
++
++obj-$(CONFIG_USB_DWCOTG)	+= dwc_common_port_lib.o
++dwc_common_port_lib-objs := dwc_cc.o dwc_modpow.o dwc_dh.o \
++			    dwc_crypto.o dwc_notifier.o \
++			    dwc_common_linux.o dwc_mem.o
++
++kernrelwd := $(subst ., ,$(KERNELRELEASE))
++kernrel3 := $(word 1,$(kernrelwd)).$(word 2,$(kernrelwd)).$(word 3,$(kernrelwd))
++
++ifneq ($(kernrel3),2.6.20)
++# grayg - I only know that we use ccflags-y in 2.6.31 actually
++ccflags-y += $(CPPFLAGS)
++endif
++
++else
++
++#ifeq ($(KDIR),)
++#$(error Must give "KDIR=/path/to/kernel/source" on command line or in environment)
++#endif
++
++ifeq ($(ARCH),)
++$(error Must give "ARCH=<arch>" on command line or in environment. Also, if \
++ cross-compiling, must give "CROSS_COMPILE=/path/to/compiler/plus/tool-prefix-")
++endif
++
++ifeq ($(DOXYGEN),)
++DOXYGEN		:= doxygen
++endif
++
++default:
++	$(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
++
++docs:	$(wildcard *.[hc]) doc/doxygen.cfg
++	$(DOXYGEN) doc/doxygen.cfg
++
++tags:	$(wildcard *.[hc])
++	$(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
++
++endif
++
++clean:
++	rm -rf *.o *.ko .*.cmd *.mod.c .*.o.d .*.o.tmp modules.order Module.markers Module.symvers .tmp_versions/
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/Makefile.fbsd
+@@ -0,0 +1,17 @@
++CFLAGS	+= -I/sys/i386/compile/GENERIC -I/sys/i386/include -I/usr/include
++CFLAGS	+= -DDWC_FREEBSD
++CFLAGS	+= -DDEBUG
++#CFLAGS	+= -DDWC_DEBUG_REGS
++#CFLAGS	+= -DDWC_DEBUG_MEMORY
++
++#CFLAGS	+= -DDWC_LIBMODULE
++#CFLAGS	+= -DDWC_CCLIB
++#CFLAGS	+= -DDWC_CRYPTOLIB
++#CFLAGS	+= -DDWC_NOTIFYLIB
++#CFLAGS	+= -DDWC_UTFLIB
++
++KMOD = dwc_common_port_lib
++SRCS = dwc_cc.c dwc_modpow.c dwc_dh.c dwc_crypto.c dwc_notifier.c \
++       dwc_common_fbsd.c dwc_mem.c
++
++.include <bsd.kmod.mk>
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/Makefile.linux
+@@ -0,0 +1,49 @@
++#
++# Makefile for DWC_common library
++#
++ifneq ($(KERNELRELEASE),)
++
++ccflags-y	+= -DDWC_LINUX
++#ccflags-y	+= -DDEBUG
++#ccflags-y	+= -DDWC_DEBUG_REGS
++#ccflags-y	+= -DDWC_DEBUG_MEMORY
++
++ccflags-y	+= -DDWC_LIBMODULE
++ccflags-y	+= -DDWC_CCLIB
++ccflags-y	+= -DDWC_CRYPTOLIB
++ccflags-y	+= -DDWC_NOTIFYLIB
++ccflags-y	+= -DDWC_UTFLIB
++
++obj-m			 := dwc_common_port_lib.o
++dwc_common_port_lib-objs := dwc_cc.o dwc_modpow.o dwc_dh.o \
++			    dwc_crypto.o dwc_notifier.o \
++			    dwc_common_linux.o dwc_mem.o
++
++else
++
++ifeq ($(KDIR),)
++$(error Must give "KDIR=/path/to/kernel/source" on command line or in environment)
++endif
++
++ifeq ($(ARCH),)
++$(error Must give "ARCH=<arch>" on command line or in environment. Also, if \
++ cross-compiling, must give "CROSS_COMPILE=/path/to/compiler/plus/tool-prefix-")
++endif
++
++ifeq ($(DOXYGEN),)
++DOXYGEN		:= doxygen
++endif
++
++default:
++	$(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
++
++docs:	$(wildcard *.[hc]) doc/doxygen.cfg
++	$(DOXYGEN) doc/doxygen.cfg
++
++tags:	$(wildcard *.[hc])
++	$(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
++
++endif
++
++clean:
++	rm -rf *.o *.ko .*.cmd *.mod.c .*.o.d .*.o.tmp modules.order Module.markers Module.symvers .tmp_versions/
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/changes.txt
+@@ -0,0 +1,174 @@
++
++dwc_read_reg32() and friends now take an additional parameter, a pointer to an
++IO context struct. The IO context struct should live in an os-dependent struct
++in your driver. As an example, the dwc_usb3 driver has an os-dependent struct
++named 'os_dep' embedded in the main device struct. So there these calls look
++like this:
++
++	dwc_read_reg32(&usb3_dev->os_dep.ioctx, &pcd->dev_global_regs->dcfg);
++
++	dwc_write_reg32(&usb3_dev->os_dep.ioctx,
++			&pcd->dev_global_regs->dcfg, 0);
++
++Note that for the existing Linux driver ports, it is not necessary to actually
++define the 'ioctx' member in the os-dependent struct. Since Linux does not
++require an IO context, its macros for dwc_read_reg32() and friends do not
++use the context pointer, so it is optimized away by the compiler. But it is
++necessary to add the pointer parameter to all of the call sites, to be ready
++for any future ports (such as FreeBSD) which do require an IO context.
++
++
++Similarly, dwc_alloc(), dwc_alloc_atomic(), dwc_strdup(), and dwc_free() now
++take an additional parameter, a pointer to a memory context. Examples:
++
++	addr = dwc_alloc(&usb3_dev->os_dep.memctx, size);
++
++	dwc_free(&usb3_dev->os_dep.memctx, addr);
++
++Again, for the Linux ports, it is not necessary to actually define the memctx
++member, but it is necessary to add the pointer parameter to all of the call
++sites.
++
++
++Same for dwc_dma_alloc() and dwc_dma_free(). Examples:
++
++	virt_addr = dwc_dma_alloc(&usb3_dev->os_dep.dmactx, size, &phys_addr);
++
++	dwc_dma_free(&usb3_dev->os_dep.dmactx, size, virt_addr, phys_addr);
++
++
++Same for dwc_mutex_alloc() and dwc_mutex_free(). Examples:
++
++	mutex = dwc_mutex_alloc(&usb3_dev->os_dep.mtxctx);
++
++	dwc_mutex_free(&usb3_dev->os_dep.mtxctx, mutex);
++
++
++Same for dwc_spinlock_alloc() and dwc_spinlock_free(). Examples:
++
++	lock = dwc_spinlock_alloc(&usb3_dev->osdep.splctx);
++
++	dwc_spinlock_free(&usb3_dev->osdep.splctx, lock);
++
++
++Same for dwc_timer_alloc(). Example:
++
++	timer = dwc_timer_alloc(&usb3_dev->os_dep.tmrctx, "dwc_usb3_tmr1",
++				cb_func, cb_data);
++
++
++Same for dwc_waitq_alloc(). Example:
++
++	waitq = dwc_waitq_alloc(&usb3_dev->os_dep.wtqctx);
++
++
++Same for dwc_thread_run(). Example:
++
++	thread = dwc_thread_run(&usb3_dev->os_dep.thdctx, func,
++				"dwc_usb3_thd1", data);
++
++
++Same for dwc_workq_alloc(). Example:
++
++	workq = dwc_workq_alloc(&usb3_dev->osdep.wkqctx, "dwc_usb3_wkq1");
++
++
++Same for dwc_task_alloc(). Example:
++
++	task = dwc_task_alloc(&usb3_dev->os_dep.tskctx, "dwc_usb3_tsk1",
++			      cb_func, cb_data);
++
++
++In addition to the context pointer additions, a few core functions have had
++other changes made to their parameters:
++
++The 'flags' parameter to dwc_spinlock_irqsave() and dwc_spinunlock_irqrestore()
++has been changed from a uint64_t to a dwc_irqflags_t.
++
++dwc_thread_should_stop() now takes a 'dwc_thread_t *' parameter, because the
++FreeBSD equivalent of that function requires it.
++
++And, in addition to the context pointer, dwc_task_alloc() also adds a
++'char *name' parameter, to be consistent with dwc_thread_run() and
++dwc_workq_alloc(), and because the FreeBSD equivalent of that function
++requires a unique name.
++
++
++Here is a complete list of the core functions that now take a pointer to a
++context as their first parameter:
++
++	dwc_read_reg32
++	dwc_read_reg64
++	dwc_write_reg32
++	dwc_write_reg64
++	dwc_modify_reg32
++	dwc_modify_reg64
++	dwc_alloc
++	dwc_alloc_atomic
++	dwc_strdup
++	dwc_free
++	dwc_dma_alloc
++	dwc_dma_free
++	dwc_mutex_alloc
++	dwc_mutex_free
++	dwc_spinlock_alloc
++	dwc_spinlock_free
++	dwc_timer_alloc
++	dwc_waitq_alloc
++	dwc_thread_run
++	dwc_workq_alloc
++	dwc_task_alloc     Also adds a 'char *name' as its 2nd parameter
++
++And here are the core functions that have other changes to their parameters:
++
++	dwc_spinlock_irqsave      'flags' param is now a 'dwc_irqflags_t *'
++	dwc_spinunlock_irqrestore 'flags' param is now a 'dwc_irqflags_t'
++	dwc_thread_should_stop    Adds a 'dwc_thread_t *' parameter
++
++
++
++The changes to the core functions also require some of the other library
++functions to change:
++
++	dwc_cc_if_alloc() and dwc_cc_if_free() now take a 'void *memctx'
++	(for memory allocation) as the 1st param and a 'void *mtxctx'
++	(for mutex allocation) as the 2nd param.
++
++	dwc_cc_clear(), dwc_cc_add(), dwc_cc_change(), dwc_cc_remove(),
++	dwc_cc_data_for_save(), and dwc_cc_restore_from_data() now take a
++	'void *memctx' as the 1st param.
++
++	dwc_dh_modpow(), dwc_dh_pk(), and dwc_dh_derive_keys() now take a
++	'void *memctx' as the 1st param.
++
++	dwc_modpow() now takes a 'void *memctx' as the 1st param.
++
++	dwc_alloc_notification_manager() now takes a 'void *memctx' as the
++	1st param and a 'void *wkqctx' (for work queue allocation) as the 2nd
++	param, and also now returns an integer value that is non-zero if
++	allocation of its data structures or work queue fails.
++
++	dwc_register_notifier() now takes a 'void *memctx' as the 1st param.
++
++	dwc_memory_debug_start() now takes a 'void *mem_ctx' as the first
++	param, and also now returns an integer value that is non-zero if
++	allocation of its data structures fails.
++
++
++
++Other miscellaneous changes:
++
++The DEBUG_MEMORY and DEBUG_REGS #define's have been renamed to
++DWC_DEBUG_MEMORY and DWC_DEBUG_REGS.
++
++The following #define's have been added to allow selectively compiling library
++features:
++
++	DWC_CCLIB
++	DWC_CRYPTOLIB
++	DWC_NOTIFYLIB
++	DWC_UTFLIB
++
++A DWC_LIBMODULE #define has also been added. If this is not defined, then the
++module code in dwc_common_linux.c is not compiled in. This allows linking the
++library code directly into a driver module, instead of as a standalone module.
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/doc/doxygen.cfg
+@@ -0,0 +1,270 @@
++# Doxyfile 1.4.5
++
++#---------------------------------------------------------------------------
++# Project related configuration options
++#---------------------------------------------------------------------------
++PROJECT_NAME           = "Synopsys DWC Portability and Common Library for UWB"
++PROJECT_NUMBER         =
++OUTPUT_DIRECTORY       = doc
++CREATE_SUBDIRS         = NO
++OUTPUT_LANGUAGE        = English
++BRIEF_MEMBER_DESC      = YES
++REPEAT_BRIEF           = YES
++ABBREVIATE_BRIEF       = "The $name class" \
++                         "The $name widget" \
++                         "The $name file" \
++                         is \
++                         provides \
++                         specifies \
++                         contains \
++                         represents \
++                         a \
++                         an \
++                         the
++ALWAYS_DETAILED_SEC    = YES
++INLINE_INHERITED_MEMB  = NO
++FULL_PATH_NAMES        = NO
++STRIP_FROM_PATH        = ..
++STRIP_FROM_INC_PATH    =
++SHORT_NAMES            = NO
++JAVADOC_AUTOBRIEF      = YES
++MULTILINE_CPP_IS_BRIEF = NO
++DETAILS_AT_TOP         = YES
++INHERIT_DOCS           = YES
++SEPARATE_MEMBER_PAGES  = NO
++TAB_SIZE               = 8
++ALIASES                =
++OPTIMIZE_OUTPUT_FOR_C  = YES
++OPTIMIZE_OUTPUT_JAVA   = NO
++BUILTIN_STL_SUPPORT    = NO
++DISTRIBUTE_GROUP_DOC   = NO
++SUBGROUPING            = NO
++#---------------------------------------------------------------------------
++# Build related configuration options
++#---------------------------------------------------------------------------
++EXTRACT_ALL            = NO
++EXTRACT_PRIVATE        = NO
++EXTRACT_STATIC         = YES
++EXTRACT_LOCAL_CLASSES  = NO
++EXTRACT_LOCAL_METHODS  = NO
++HIDE_UNDOC_MEMBERS     = NO
++HIDE_UNDOC_CLASSES     = NO
++HIDE_FRIEND_COMPOUNDS  = NO
++HIDE_IN_BODY_DOCS      = NO
++INTERNAL_DOCS          = NO
++CASE_SENSE_NAMES       = YES
++HIDE_SCOPE_NAMES       = NO
++SHOW_INCLUDE_FILES     = NO
++INLINE_INFO            = YES
++SORT_MEMBER_DOCS       = NO
++SORT_BRIEF_DOCS        = NO
++SORT_BY_SCOPE_NAME     = NO
++GENERATE_TODOLIST      = YES
++GENERATE_TESTLIST      = YES
++GENERATE_BUGLIST       = YES
++GENERATE_DEPRECATEDLIST= YES
++ENABLED_SECTIONS       =
++MAX_INITIALIZER_LINES  = 30
++SHOW_USED_FILES        = YES
++SHOW_DIRECTORIES       = YES
++FILE_VERSION_FILTER    =
++#---------------------------------------------------------------------------
++# configuration options related to warning and progress messages
++#---------------------------------------------------------------------------
++QUIET                  = YES
++WARNINGS               = YES
++WARN_IF_UNDOCUMENTED   = NO
++WARN_IF_DOC_ERROR      = YES
++WARN_NO_PARAMDOC       = YES
++WARN_FORMAT            = "$file:$line: $text"
++WARN_LOGFILE           =
++#---------------------------------------------------------------------------
++# configuration options related to the input files
++#---------------------------------------------------------------------------
++INPUT                  = .
++FILE_PATTERNS          = *.c \
++                         *.cc \
++                         *.cxx \
++                         *.cpp \
++                         *.c++ \
++                         *.d \
++                         *.java \
++                         *.ii \
++                         *.ixx \
++                         *.ipp \
++                         *.i++ \
++                         *.inl \
++                         *.h \
++                         *.hh \
++                         *.hxx \
++                         *.hpp \
++                         *.h++ \
++                         *.idl \
++                         *.odl \
++                         *.cs \
++                         *.php \
++                         *.php3 \
++                         *.inc \
++                         *.m \
++                         *.mm \
++                         *.dox \
++                         *.py \
++                         *.C \
++                         *.CC \
++                         *.C++ \
++                         *.II \
++                         *.I++ \
++                         *.H \
++                         *.HH \
++                         *.H++ \
++                         *.CS \
++                         *.PHP \
++                         *.PHP3 \
++                         *.M \
++                         *.MM \
++                         *.PY
++RECURSIVE              = NO
++EXCLUDE                =
++EXCLUDE_SYMLINKS       = NO
++EXCLUDE_PATTERNS       =
++EXAMPLE_PATH           =
++EXAMPLE_PATTERNS       = *
++EXAMPLE_RECURSIVE      = NO
++IMAGE_PATH             =
++INPUT_FILTER           =
++FILTER_PATTERNS        =
++FILTER_SOURCE_FILES    = NO
++#---------------------------------------------------------------------------
++# configuration options related to source browsing
++#---------------------------------------------------------------------------
++SOURCE_BROWSER         = NO
++INLINE_SOURCES         = NO
++STRIP_CODE_COMMENTS    = YES
++REFERENCED_BY_RELATION = YES
++REFERENCES_RELATION    = YES
++USE_HTAGS              = NO
++VERBATIM_HEADERS       = NO
++#---------------------------------------------------------------------------
++# configuration options related to the alphabetical class index
++#---------------------------------------------------------------------------
++ALPHABETICAL_INDEX     = NO
++COLS_IN_ALPHA_INDEX    = 5
++IGNORE_PREFIX          =
++#---------------------------------------------------------------------------
++# configuration options related to the HTML output
++#---------------------------------------------------------------------------
++GENERATE_HTML          = YES
++HTML_OUTPUT            = html
++HTML_FILE_EXTENSION    = .html
++HTML_HEADER            =
++HTML_FOOTER            =
++HTML_STYLESHEET        =
++HTML_ALIGN_MEMBERS     = YES
++GENERATE_HTMLHELP      = NO
++CHM_FILE               =
++HHC_LOCATION           =
++GENERATE_CHI           = NO
++BINARY_TOC             = NO
++TOC_EXPAND             = NO
++DISABLE_INDEX          = NO
++ENUM_VALUES_PER_LINE   = 4
++GENERATE_TREEVIEW      = YES
++TREEVIEW_WIDTH         = 250
++#---------------------------------------------------------------------------
++# configuration options related to the LaTeX output
++#---------------------------------------------------------------------------
++GENERATE_LATEX         = NO
++LATEX_OUTPUT           = latex
++LATEX_CMD_NAME         = latex
++MAKEINDEX_CMD_NAME     = makeindex
++COMPACT_LATEX          = NO
++PAPER_TYPE             = a4wide
++EXTRA_PACKAGES         =
++LATEX_HEADER           =
++PDF_HYPERLINKS         = NO
++USE_PDFLATEX           = NO
++LATEX_BATCHMODE        = NO
++LATEX_HIDE_INDICES     = NO
++#---------------------------------------------------------------------------
++# configuration options related to the RTF output
++#---------------------------------------------------------------------------
++GENERATE_RTF           = NO
++RTF_OUTPUT             = rtf
++COMPACT_RTF            = NO
++RTF_HYPERLINKS         = NO
++RTF_STYLESHEET_FILE    =
++RTF_EXTENSIONS_FILE    =
++#---------------------------------------------------------------------------
++# configuration options related to the man page output
++#---------------------------------------------------------------------------
++GENERATE_MAN           = NO
++MAN_OUTPUT             = man
++MAN_EXTENSION          = .3
++MAN_LINKS              = NO
++#---------------------------------------------------------------------------
++# configuration options related to the XML output
++#---------------------------------------------------------------------------
++GENERATE_XML           = NO
++XML_OUTPUT             = xml
++XML_SCHEMA             =
++XML_DTD                =
++XML_PROGRAMLISTING     = YES
++#---------------------------------------------------------------------------
++# configuration options for the AutoGen Definitions output
++#---------------------------------------------------------------------------
++GENERATE_AUTOGEN_DEF   = NO
++#---------------------------------------------------------------------------
++# configuration options related to the Perl module output
++#---------------------------------------------------------------------------
++GENERATE_PERLMOD       = NO
++PERLMOD_LATEX          = NO
++PERLMOD_PRETTY         = YES
++PERLMOD_MAKEVAR_PREFIX =
++#---------------------------------------------------------------------------
++# Configuration options related to the preprocessor
++#---------------------------------------------------------------------------
++ENABLE_PREPROCESSING   = YES
++MACRO_EXPANSION        = NO
++EXPAND_ONLY_PREDEF     = NO
++SEARCH_INCLUDES        = YES
++INCLUDE_PATH           =
++INCLUDE_FILE_PATTERNS  =
++PREDEFINED             = DEBUG DEBUG_MEMORY
++EXPAND_AS_DEFINED      =
++SKIP_FUNCTION_MACROS   = YES
++#---------------------------------------------------------------------------
++# Configuration::additions related to external references
++#---------------------------------------------------------------------------
++TAGFILES               =
++GENERATE_TAGFILE       =
++ALLEXTERNALS           = NO
++EXTERNAL_GROUPS        = YES
++PERL_PATH              = /usr/bin/perl
++#---------------------------------------------------------------------------
++# Configuration options related to the dot tool
++#---------------------------------------------------------------------------
++CLASS_DIAGRAMS         = YES
++HIDE_UNDOC_RELATIONS   = YES
++HAVE_DOT               = NO
++CLASS_GRAPH            = YES
++COLLABORATION_GRAPH    = YES
++GROUP_GRAPHS           = YES
++UML_LOOK               = NO
++TEMPLATE_RELATIONS     = NO
++INCLUDE_GRAPH          = NO
++INCLUDED_BY_GRAPH      = YES
++CALL_GRAPH             = NO
++GRAPHICAL_HIERARCHY    = YES
++DIRECTORY_GRAPH        = YES
++DOT_IMAGE_FORMAT       = png
++DOT_PATH               =
++DOTFILE_DIRS           =
++MAX_DOT_GRAPH_DEPTH    = 1000
++DOT_TRANSPARENT        = NO
++DOT_MULTI_TARGETS      = NO
++GENERATE_LEGEND        = YES
++DOT_CLEANUP            = YES
++#---------------------------------------------------------------------------
++# Configuration::additions related to the search engine
++#---------------------------------------------------------------------------
++SEARCHENGINE           = NO
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_cc.c
+@@ -0,0 +1,532 @@
++/* =========================================================================
++ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_cc.c $
++ * $Revision: #4 $
++ * $Date: 2010/11/04 $
++ * $Change: 1621692 $
++ *
++ * Synopsys Portability Library Software and documentation
++ * (hereinafter, "Software") is an Unsupported proprietary work of
++ * Synopsys, Inc. unless otherwise expressly agreed to in writing
++ * between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product
++ * under any End User Software License Agreement or Agreement for
++ * Licensed Product with Synopsys or any supplement thereto. You are
++ * permitted to use and redistribute this Software in source and binary
++ * forms, with or without modification, provided that redistributions
++ * of source code must retain this notice. You may not view, use,
++ * disclose, copy or distribute this file or any information contained
++ * herein except pursuant to this license grant from Synopsys. If you
++ * do not agree with this notice, including the disclaimer below, then
++ * you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
++ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
++ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
++ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================= */
++#ifdef DWC_CCLIB
++
++#include "dwc_cc.h"
++
++typedef struct dwc_cc
++{
++	uint32_t uid;
++	uint8_t chid[16];
++	uint8_t cdid[16];
++	uint8_t ck[16];
++	uint8_t *name;
++	uint8_t length;
++        DWC_CIRCLEQ_ENTRY(dwc_cc) list_entry;
++} dwc_cc_t;
++
++DWC_CIRCLEQ_HEAD(context_list, dwc_cc);
++
++/** The main structure for CC management.  */
++struct dwc_cc_if
++{
++	dwc_mutex_t *mutex;
++	char *filename;
++
++	unsigned is_host:1;
++
++	dwc_notifier_t *notifier;
++
++	struct context_list list;
++};
++
++#ifdef DEBUG
++static inline void dump_bytes(char *name, uint8_t *bytes, int len)
++{
++	int i;
++	DWC_PRINTF("%s: ", name);
++	for (i=0; i<len; i++) {
++		DWC_PRINTF("%02x ", bytes[i]);
++	}
++	DWC_PRINTF("\n");
++}
++#else
++#define dump_bytes(x...)
++#endif
++
++static dwc_cc_t *alloc_cc(void *mem_ctx, uint8_t *name, uint32_t length)
++{
++	dwc_cc_t *cc = dwc_alloc(mem_ctx, sizeof(dwc_cc_t));
++	if (!cc) {
++		return NULL;
++	}
++	DWC_MEMSET(cc, 0, sizeof(dwc_cc_t));
++
++	if (name) {
++		cc->length = length;
++		cc->name = dwc_alloc(mem_ctx, length);
++		if (!cc->name) {
++			dwc_free(mem_ctx, cc);
++			return NULL;
++		}
++
++		DWC_MEMCPY(cc->name, name, length);
++	}
++
++	return cc;
++}
++
++static void free_cc(void *mem_ctx, dwc_cc_t *cc)
++{
++	if (cc->name) {
++		dwc_free(mem_ctx, cc->name);
++	}
++	dwc_free(mem_ctx, cc);
++}
++
++static uint32_t next_uid(dwc_cc_if_t *cc_if)
++{
++	uint32_t uid = 0;
++	dwc_cc_t *cc;
++	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
++		if (cc->uid > uid) {
++			uid = cc->uid;
++		}
++	}
++
++	if (uid == 0) {
++		uid = 255;
++	}
++
++	return uid + 1;
++}
++
++static dwc_cc_t *cc_find(dwc_cc_if_t *cc_if, uint32_t uid)
++{
++	dwc_cc_t *cc;
++	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
++		if (cc->uid == uid) {
++			return cc;
++		}
++	}
++	return NULL;
++}
++
++static unsigned int cc_data_size(dwc_cc_if_t *cc_if)
++{
++	unsigned int size = 0;
++	dwc_cc_t *cc;
++	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
++		size += (48 + 1);
++		if (cc->name) {
++			size += cc->length;
++		}
++	}
++	return size;
++}
++
++static uint32_t cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid)
++{
++	uint32_t uid = 0;
++	dwc_cc_t *cc;
++
++	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
++		if (DWC_MEMCMP(cc->chid, chid, 16) == 0) {
++			uid = cc->uid;
++			break;
++		}
++	}
++	return uid;
++}
++static uint32_t cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid)
++{
++	uint32_t uid = 0;
++	dwc_cc_t *cc;
++
++	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
++		if (DWC_MEMCMP(cc->cdid, cdid, 16) == 0) {
++			uid = cc->uid;
++			break;
++		}
++	}
++	return uid;
++}
++
++/* Internal cc_add */
++static int32_t cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
++		      uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
++{
++	dwc_cc_t *cc;
++	uint32_t uid;
++
++	if (cc_if->is_host) {
++		uid = cc_match_cdid(cc_if, cdid);
++	}
++	else {
++		uid = cc_match_chid(cc_if, chid);
++	}
++
++	if (uid) {
++		DWC_DEBUGC("Replacing previous connection context id=%d name=%p name_len=%d", uid, name, length);
++		cc = cc_find(cc_if, uid);
++	}
++	else {
++		cc = alloc_cc(mem_ctx, name, length);
++		cc->uid = next_uid(cc_if);
++		DWC_CIRCLEQ_INSERT_TAIL(&cc_if->list, cc, list_entry);
++	}
++
++	DWC_MEMCPY(&(cc->chid[0]), chid, 16);
++	DWC_MEMCPY(&(cc->cdid[0]), cdid, 16);
++	DWC_MEMCPY(&(cc->ck[0]), ck, 16);
++
++	DWC_DEBUGC("Added connection context id=%d name=%p name_len=%d", cc->uid, name, length);
++	dump_bytes("CHID", cc->chid, 16);
++	dump_bytes("CDID", cc->cdid, 16);
++	dump_bytes("CK", cc->ck, 16);
++	return cc->uid;
++}
++
++/* Internal cc_clear */
++static void cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if)
++{
++	while (!DWC_CIRCLEQ_EMPTY(&cc_if->list)) {
++		dwc_cc_t *cc = DWC_CIRCLEQ_FIRST(&cc_if->list);
++		DWC_CIRCLEQ_REMOVE_INIT(&cc_if->list, cc, list_entry);
++		free_cc(mem_ctx, cc);
++	}
++}
++
++dwc_cc_if_t *dwc_cc_if_alloc(void *mem_ctx, void *mtx_ctx,
++			     dwc_notifier_t *notifier, unsigned is_host)
++{
++	dwc_cc_if_t *cc_if = NULL;
++
++	/* Allocate a common_cc_if structure */
++	cc_if = dwc_alloc(mem_ctx, sizeof(dwc_cc_if_t));
++
++	if (!cc_if)
++		return NULL;
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
++	DWC_MUTEX_ALLOC_LINUX_DEBUG(cc_if->mutex);
++#else
++	cc_if->mutex = dwc_mutex_alloc(mtx_ctx);
++#endif
++	if (!cc_if->mutex) {
++		dwc_free(mem_ctx, cc_if);
++		return NULL;
++	}
++
++	DWC_CIRCLEQ_INIT(&cc_if->list);
++	cc_if->is_host = is_host;
++	cc_if->notifier = notifier;
++	return cc_if;
++}
++
++void dwc_cc_if_free(void *mem_ctx, void *mtx_ctx, dwc_cc_if_t *cc_if)
++{
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
++	DWC_MUTEX_FREE(cc_if->mutex);
++#else
++	dwc_mutex_free(mtx_ctx, cc_if->mutex);
++#endif
++	cc_clear(mem_ctx, cc_if);
++	dwc_free(mem_ctx, cc_if);
++}
++
++static void cc_changed(dwc_cc_if_t *cc_if)
++{
++	if (cc_if->notifier) {
++		dwc_notify(cc_if->notifier, DWC_CC_LIST_CHANGED_NOTIFICATION, cc_if);
++	}
++}
++
++void dwc_cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if)
++{
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	cc_clear(mem_ctx, cc_if);
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++	cc_changed(cc_if);
++}
++
++int32_t dwc_cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
++		   uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
++{
++	uint32_t uid;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	uid = cc_add(mem_ctx, cc_if, chid, cdid, ck, name, length);
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++	cc_changed(cc_if);
++
++	return uid;
++}
++
++void dwc_cc_change(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id, uint8_t *chid,
++		   uint8_t *cdid, uint8_t *ck, uint8_t *name, uint8_t length)
++{
++	dwc_cc_t* cc;
++
++	DWC_DEBUGC("Change connection context %d", id);
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	cc = cc_find(cc_if, id);
++	if (!cc) {
++		DWC_ERROR("Uid %d not found in cc list\n", id);
++		DWC_MUTEX_UNLOCK(cc_if->mutex);
++		return;
++	}
++
++	if (chid) {
++		DWC_MEMCPY(&(cc->chid[0]), chid, 16);
++	}
++	if (cdid) {
++		DWC_MEMCPY(&(cc->cdid[0]), cdid, 16);
++	}
++	if (ck) {
++		DWC_MEMCPY(&(cc->ck[0]), ck, 16);
++	}
++
++	if (name) {
++		if (cc->name) {
++			dwc_free(mem_ctx, cc->name);
++		}
++		cc->name = dwc_alloc(mem_ctx, length);
++		if (!cc->name) {
++			DWC_ERROR("Out of memory in dwc_cc_change()\n");
++			DWC_MUTEX_UNLOCK(cc_if->mutex);
++			return;
++		}
++		cc->length = length;
++		DWC_MEMCPY(cc->name, name, length);
++	}
++
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++
++	cc_changed(cc_if);
++
++	DWC_DEBUGC("Changed connection context id=%d\n", id);
++	dump_bytes("New CHID", cc->chid, 16);
++	dump_bytes("New CDID", cc->cdid, 16);
++	dump_bytes("New CK", cc->ck, 16);
++}
++
++void dwc_cc_remove(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id)
++{
++	dwc_cc_t *cc;
++
++	DWC_DEBUGC("Removing connection context %d", id);
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	cc = cc_find(cc_if, id);
++	if (!cc) {
++		DWC_ERROR("Uid %d not found in cc list\n", id);
++		DWC_MUTEX_UNLOCK(cc_if->mutex);
++		return;
++	}
++
++	DWC_CIRCLEQ_REMOVE_INIT(&cc_if->list, cc, list_entry);
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++	free_cc(mem_ctx, cc);
++
++	cc_changed(cc_if);
++}
++
++uint8_t *dwc_cc_data_for_save(void *mem_ctx, dwc_cc_if_t *cc_if, unsigned int *length)
++{
++	uint8_t *buf, *x;
++	uint8_t zero = 0;
++	dwc_cc_t *cc;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	*length = cc_data_size(cc_if);
++	if (!(*length)) {
++		DWC_MUTEX_UNLOCK(cc_if->mutex);
++		return NULL;
++	}
++
++	DWC_DEBUGC("Creating data for saving (length=%d)", *length);
++
++	buf = dwc_alloc(mem_ctx, *length);
++	if (!buf) {
++		*length = 0;
++		DWC_MUTEX_UNLOCK(cc_if->mutex);
++		return NULL;
++	}
++
++	x = buf;
++	DWC_CIRCLEQ_FOREACH(cc, &cc_if->list, list_entry) {
++		DWC_MEMCPY(x, cc->chid, 16);
++		x += 16;
++		DWC_MEMCPY(x, cc->cdid, 16);
++		x += 16;
++		DWC_MEMCPY(x, cc->ck, 16);
++		x += 16;
++		if (cc->name) {
++			DWC_MEMCPY(x, &cc->length, 1);
++			x += 1;
++			DWC_MEMCPY(x, cc->name, cc->length);
++			x += cc->length;
++		}
++		else {
++			DWC_MEMCPY(x, &zero, 1);
++			x += 1;
++		}
++	}
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++
++	return buf;
++}
++
++void dwc_cc_restore_from_data(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *data, uint32_t length)
++{
++	uint8_t name_length;
++	uint8_t *name;
++	uint8_t *chid;
++	uint8_t *cdid;
++	uint8_t *ck;
++	uint32_t i = 0;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	cc_clear(mem_ctx, cc_if);
++
++	while (i < length) {
++		chid = &data[i];
++		i += 16;
++		cdid = &data[i];
++		i += 16;
++		ck = &data[i];
++		i += 16;
++
++		name_length = data[i];
++		i ++;
++
++		if (name_length) {
++			name = &data[i];
++			i += name_length;
++		}
++		else {
++			name = NULL;
++		}
++
++		/* check to see if we haven't overflown the buffer */
++		if (i > length) {
++			DWC_ERROR("Data format error while attempting to load CCs "
++				  "(nlen=%d, iter=%d, buflen=%d).\n", name_length, i, length);
++			break;
++		}
++
++		cc_add(mem_ctx, cc_if, chid, cdid, ck, name, name_length);
++	}
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++
++	cc_changed(cc_if);
++}
++
++uint32_t dwc_cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid)
++{
++	uint32_t uid = 0;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	uid = cc_match_chid(cc_if, chid);
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++	return uid;
++}
++uint32_t dwc_cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid)
++{
++	uint32_t uid = 0;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	uid = cc_match_cdid(cc_if, cdid);
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++	return uid;
++}
++
++uint8_t *dwc_cc_ck(dwc_cc_if_t *cc_if, int32_t id)
++{
++	uint8_t *ck = NULL;
++	dwc_cc_t *cc;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	cc = cc_find(cc_if, id);
++	if (cc) {
++		ck = cc->ck;
++	}
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++
++	return ck;
++
++}
++
++uint8_t *dwc_cc_chid(dwc_cc_if_t *cc_if, int32_t id)
++{
++	uint8_t *retval = NULL;
++	dwc_cc_t *cc;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	cc = cc_find(cc_if, id);
++	if (cc) {
++		retval = cc->chid;
++	}
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++
++	return retval;
++}
++
++uint8_t *dwc_cc_cdid(dwc_cc_if_t *cc_if, int32_t id)
++{
++	uint8_t *retval = NULL;
++	dwc_cc_t *cc;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	cc = cc_find(cc_if, id);
++	if (cc) {
++		retval = cc->cdid;
++	}
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++
++	return retval;
++}
++
++uint8_t *dwc_cc_name(dwc_cc_if_t *cc_if, int32_t id, uint8_t *length)
++{
++	uint8_t *retval = NULL;
++	dwc_cc_t *cc;
++
++	DWC_MUTEX_LOCK(cc_if->mutex);
++	*length = 0;
++	cc = cc_find(cc_if, id);
++	if (cc) {
++		*length = cc->length;
++		retval = cc->name;
++	}
++	DWC_MUTEX_UNLOCK(cc_if->mutex);
++
++	return retval;
++}
++
++#endif	/* DWC_CCLIB */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_cc.h
+@@ -0,0 +1,224 @@
++/* =========================================================================
++ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_cc.h $
++ * $Revision: #4 $
++ * $Date: 2010/09/28 $
++ * $Change: 1596182 $
++ *
++ * Synopsys Portability Library Software and documentation
++ * (hereinafter, "Software") is an Unsupported proprietary work of
++ * Synopsys, Inc. unless otherwise expressly agreed to in writing
++ * between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product
++ * under any End User Software License Agreement or Agreement for
++ * Licensed Product with Synopsys or any supplement thereto. You are
++ * permitted to use and redistribute this Software in source and binary
++ * forms, with or without modification, provided that redistributions
++ * of source code must retain this notice. You may not view, use,
++ * disclose, copy or distribute this file or any information contained
++ * herein except pursuant to this license grant from Synopsys. If you
++ * do not agree with this notice, including the disclaimer below, then
++ * you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
++ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
++ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
++ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================= */
++#ifndef _DWC_CC_H_
++#define _DWC_CC_H_
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/** @file
++ *
++ * This file defines the Context Context library.
++ *
++ * The main data structure is dwc_cc_if_t which is returned by either the
++ * dwc_cc_if_alloc function or returned by the module to the user via a provided
++ * function. The data structure is opaque and should only be manipulated via the
++ * functions provied in this API.
++ *
++ * It manages a list of connection contexts and operations can be performed to
++ * add, remove, query, search, and change, those contexts.  Additionally,
++ * a dwc_notifier_t object can be requested from the manager so that
++ * the user can be notified whenever the context list has changed.
++ */
++
++#include "dwc_os.h"
++#include "dwc_list.h"
++#include "dwc_notifier.h"
++
++
++/* Notifications */
++#define DWC_CC_LIST_CHANGED_NOTIFICATION "DWC_CC_LIST_CHANGED_NOTIFICATION"
++
++struct dwc_cc_if;
++typedef struct dwc_cc_if dwc_cc_if_t;
++
++
++/** @name Connection Context Operations */
++/** @{ */
++
++/** This function allocates memory for a dwc_cc_if_t structure, initializes
++ * fields to default values, and returns a pointer to the structure or NULL on
++ * error. */
++extern dwc_cc_if_t *dwc_cc_if_alloc(void *mem_ctx, void *mtx_ctx,
++				    dwc_notifier_t *notifier, unsigned is_host);
++
++/** Frees the memory for the specified CC structure allocated from
++ * dwc_cc_if_alloc(). */
++extern void dwc_cc_if_free(void *mem_ctx, void *mtx_ctx, dwc_cc_if_t *cc_if);
++
++/** Removes all contexts from the connection context list */
++extern void dwc_cc_clear(void *mem_ctx, dwc_cc_if_t *cc_if);
++
++/** Adds a connection context (CHID, CK, CDID, Name) to the connection context list.
++ * If a CHID already exists, the CK and name are overwritten.  Statistics are
++ * not overwritten.
++ *
++ * @param cc_if The cc_if structure.
++ * @param chid A pointer to the 16-byte CHID.  This value will be copied.
++ * @param ck A pointer to the 16-byte CK.  This value will be copied.
++ * @param cdid A pointer to the 16-byte CDID.  This value will be copied.
++ * @param name An optional host friendly name as defined in the association model
++ * spec.  Must be a UTF16-LE unicode string.  Can be NULL to indicated no name.
++ * @param length The length othe unicode string.
++ * @return A unique identifier used to refer to this context that is valid for
++ * as long as this context is still in the list. */
++extern int32_t dwc_cc_add(void *mem_ctx, dwc_cc_if_t *cc_if, uint8_t *chid,
++			  uint8_t *cdid, uint8_t *ck, uint8_t *name,
++			  uint8_t length);
++
++/** Changes the CHID, CK, CDID, or Name values of a connection context in the
++ * list, preserving any accumulated statistics.  This would typically be called
++ * if the host decideds to change the context with a SET_CONNECTION request.
++ *
++ * @param cc_if The cc_if structure.
++ * @param id The identifier of the connection context.
++ * @param chid A pointer to the 16-byte CHID.  This value will be copied.  NULL
++ * indicates no change.
++ * @param cdid A pointer to the 16-byte CDID.  This value will be copied.  NULL
++ * indicates no change.
++ * @param ck A pointer to the 16-byte CK.  This value will be copied.  NULL
++ * indicates no change.
++ * @param name Host friendly name UTF16-LE.  NULL indicates no change.
++ * @param length Length of name. */
++extern void dwc_cc_change(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id,
++			  uint8_t *chid, uint8_t *cdid, uint8_t *ck,
++			  uint8_t *name, uint8_t length);
++
++/** Remove the specified connection context.
++ * @param cc_if The cc_if structure.
++ * @param id The identifier of the connection context to remove. */
++extern void dwc_cc_remove(void *mem_ctx, dwc_cc_if_t *cc_if, int32_t id);
++
++/** Get a binary block of data for the connection context list and attributes.
++ * This data can be used by the OS specific driver to save the connection
++ * context list into non-volatile memory.
++ *
++ * @param cc_if The cc_if structure.
++ * @param length Return the length of the data buffer.
++ * @return A pointer to the data buffer.  The memory for this buffer should be
++ * freed with DWC_FREE() after use. */
++extern uint8_t *dwc_cc_data_for_save(void *mem_ctx, dwc_cc_if_t *cc_if,
++				     unsigned int *length);
++
++/** Restore the connection context list from the binary data that was previously
++ * returned from a call to dwc_cc_data_for_save.  This can be used by the OS specific
++ * driver to load a connection context list from non-volatile memory.
++ *
++ * @param cc_if The cc_if structure.
++ * @param data The data bytes as returned from dwc_cc_data_for_save.
++ * @param length The length of the data. */
++extern void dwc_cc_restore_from_data(void *mem_ctx, dwc_cc_if_t *cc_if,
++				     uint8_t *data, unsigned int length);
++
++/** Find the connection context from the specified CHID.
++ *
++ * @param cc_if The cc_if structure.
++ * @param chid A pointer to the CHID data.
++ * @return A non-zero identifier of the connection context if the CHID matches.
++ * Otherwise returns 0. */
++extern uint32_t dwc_cc_match_chid(dwc_cc_if_t *cc_if, uint8_t *chid);
++
++/** Find the connection context from the specified CDID.
++ *
++ * @param cc_if The cc_if structure.
++ * @param cdid A pointer to the CDID data.
++ * @return A non-zero identifier of the connection context if the CHID matches.
++ * Otherwise returns 0. */
++extern uint32_t dwc_cc_match_cdid(dwc_cc_if_t *cc_if, uint8_t *cdid);
++
++/** Retrieve the CK from the specified connection context.
++ *
++ * @param cc_if The cc_if structure.
++ * @param id The identifier of the connection context.
++ * @return A pointer to the CK data.  The memory does not need to be freed. */
++extern uint8_t *dwc_cc_ck(dwc_cc_if_t *cc_if, int32_t id);
++
++/** Retrieve the CHID from the specified connection context.
++ *
++ * @param cc_if The cc_if structure.
++ * @param id The identifier of the connection context.
++ * @return A pointer to the CHID data.  The memory does not need to be freed. */
++extern uint8_t *dwc_cc_chid(dwc_cc_if_t *cc_if, int32_t id);
++
++/** Retrieve the CDID from the specified connection context.
++ *
++ * @param cc_if The cc_if structure.
++ * @param id The identifier of the connection context.
++ * @return A pointer to the CDID data.  The memory does not need to be freed. */
++extern uint8_t *dwc_cc_cdid(dwc_cc_if_t *cc_if, int32_t id);
++
++extern uint8_t *dwc_cc_name(dwc_cc_if_t *cc_if, int32_t id, uint8_t *length);
++
++/** Checks a buffer for non-zero.
++ * @param id A pointer to a 16 byte buffer.
++ * @return true if the 16 byte value is non-zero. */
++static inline unsigned dwc_assoc_is_not_zero_id(uint8_t *id) {
++	int i;
++	for (i=0; i<16; i++) {
++		if (id[i]) return 1;
++	}
++	return 0;
++}
++
++/** Checks a buffer for zero.
++ * @param id A pointer to a 16 byte buffer.
++ * @return true if the 16 byte value is zero. */
++static inline unsigned dwc_assoc_is_zero_id(uint8_t *id) {
++	return !dwc_assoc_is_not_zero_id(id);
++}
++
++/** Prints an ASCII representation for the 16-byte chid, cdid, or ck, into
++ * buffer. */
++static inline int dwc_print_id_string(char *buffer, uint8_t *id) {
++	char *ptr = buffer;
++	int i;
++	for (i=0; i<16; i++) {
++		ptr += DWC_SPRINTF(ptr, "%02x", id[i]);
++		if (i < 15) {
++			ptr += DWC_SPRINTF(ptr, " ");
++		}
++	}
++	return ptr - buffer;
++}
++
++/** @} */
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* _DWC_CC_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_common_fbsd.c
+@@ -0,0 +1,1308 @@
++#include "dwc_os.h"
++#include "dwc_list.h"
++
++#ifdef DWC_CCLIB
++# include "dwc_cc.h"
++#endif
++
++#ifdef DWC_CRYPTOLIB
++# include "dwc_modpow.h"
++# include "dwc_dh.h"
++# include "dwc_crypto.h"
++#endif
++
++#ifdef DWC_NOTIFYLIB
++# include "dwc_notifier.h"
++#endif
++
++/* OS-Level Implementations */
++
++/* This is the FreeBSD 7.0 kernel implementation of the DWC platform library. */
++
++
++/* MISC */
++
++void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
++{
++	return memset(dest, byte, size);
++}
++
++void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
++{
++	return memcpy(dest, src, size);
++}
++
++void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
++{
++	bcopy(src, dest, size);
++	return dest;
++}
++
++int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
++{
++	return memcmp(m1, m2, size);
++}
++
++int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
++{
++	return strncmp(s1, s2, size);
++}
++
++int DWC_STRCMP(void *s1, void *s2)
++{
++	return strcmp(s1, s2);
++}
++
++int DWC_STRLEN(char const *str)
++{
++	return strlen(str);
++}
++
++char *DWC_STRCPY(char *to, char const *from)
++{
++	return strcpy(to, from);
++}
++
++char *DWC_STRDUP(char const *str)
++{
++	int len = DWC_STRLEN(str) + 1;
++	char *new = DWC_ALLOC_ATOMIC(len);
++
++	if (!new) {
++		return NULL;
++	}
++
++	DWC_MEMCPY(new, str, len);
++	return new;
++}
++
++int DWC_ATOI(char *str, int32_t *value)
++{
++	char *end = NULL;
++
++	*value = strtol(str, &end, 0);
++	if (*end == '\0') {
++		return 0;
++	}
++
++	return -1;
++}
++
++int DWC_ATOUI(char *str, uint32_t *value)
++{
++	char *end = NULL;
++
++	*value = strtoul(str, &end, 0);
++	if (*end == '\0') {
++		return 0;
++	}
++
++	return -1;
++}
++
++
++#ifdef DWC_UTFLIB
++/* From usbstring.c */
++
++int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
++{
++	int	count = 0;
++	u8	c;
++	u16	uchar;
++
++	/* this insists on correct encodings, though not minimal ones.
++	 * BUT it currently rejects legit 4-byte UTF-8 code points,
++	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
++	 */
++	while (len != 0 && (c = (u8) *s++) != 0) {
++		if (unlikely(c & 0x80)) {
++			// 2-byte sequence:
++			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
++			if ((c & 0xe0) == 0xc0) {
++				uchar = (c & 0x1f) << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++			// 3-byte sequence (most CJKV characters):
++			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
++			} else if ((c & 0xf0) == 0xe0) {
++				uchar = (c & 0x0f) << 12;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++				/* no bogus surrogates */
++				if (0xd800 <= uchar && uchar <= 0xdfff)
++					goto fail;
++
++			// 4-byte sequence (surrogate pairs, currently rare):
++			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
++			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
++			// (uuuuu = wwww + 1)
++			// FIXME accept the surrogate code points (only)
++			} else
++				goto fail;
++		} else
++			uchar = c;
++		put_unaligned (cpu_to_le16 (uchar), cp++);
++		count++;
++		len--;
++	}
++	return count;
++fail:
++	return -1;
++}
++
++#endif	/* DWC_UTFLIB */
++
++
++/* dwc_debug.h */
++
++dwc_bool_t DWC_IN_IRQ(void)
++{
++//	return in_irq();
++	return 0;
++}
++
++dwc_bool_t DWC_IN_BH(void)
++{
++//	return in_softirq();
++	return 0;
++}
++
++void DWC_VPRINTF(char *format, va_list args)
++{
++	vprintf(format, args);
++}
++
++int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
++{
++	return vsnprintf(str, size, format, args);
++}
++
++void DWC_PRINTF(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++int DWC_SPRINTF(char *buffer, char *format, ...)
++{
++	int retval;
++	va_list args;
++
++	va_start(args, format);
++	retval = vsprintf(buffer, format, args);
++	va_end(args);
++	return retval;
++}
++
++int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
++{
++	int retval;
++	va_list args;
++
++	va_start(args, format);
++	retval = vsnprintf(buffer, size, format, args);
++	va_end(args);
++	return retval;
++}
++
++void __DWC_WARN(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++void __DWC_ERROR(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++void DWC_EXCEPTION(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++//	BUG_ON(1);	???
++}
++
++#ifdef DEBUG
++void __DWC_DEBUG(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++#endif
++
++
++/* dwc_mem.h */
++
++#if 0
++dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
++				uint32_t align,
++				uint32_t alloc)
++{
++	struct dma_pool *pool = dma_pool_create("Pool", NULL,
++						size, align, alloc);
++	return (dwc_pool_t *)pool;
++}
++
++void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
++{
++	dma_pool_destroy((struct dma_pool *)pool);
++}
++
++void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
++{
++//	return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
++	return dma_pool_alloc((struct dma_pool *)pool, M_WAITOK, dma_addr);
++}
++
++void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
++{
++	void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
++	memset(..);
++}
++
++void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
++{
++	dma_pool_free(pool, vaddr, daddr);
++}
++#endif
++
++static void dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
++{
++	if (error)
++		return;
++	*(bus_addr_t *)arg = segs[0].ds_addr;
++}
++
++void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
++{
++	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
++	int error;
++
++	error = bus_dma_tag_create(
++#if __FreeBSD_version >= 700000
++			bus_get_dma_tag(dma->dev),	/* parent */
++#else
++			NULL,				/* parent */
++#endif
++			4, 0,				/* alignment, bounds */
++			BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
++			BUS_SPACE_MAXADDR,		/* highaddr */
++			NULL, NULL,			/* filter, filterarg */
++			size,				/* maxsize */
++			1,				/* nsegments */
++			size,				/* maxsegsize */
++			0,				/* flags */
++			NULL,				/* lockfunc */
++			NULL,				/* lockarg */
++			&dma->dma_tag);
++	if (error) {
++		device_printf(dma->dev, "%s: bus_dma_tag_create failed: %d\n",
++			      __func__, error);
++		goto fail_0;
++	}
++
++	error = bus_dmamem_alloc(dma->dma_tag, &dma->dma_vaddr,
++				 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dma->dma_map);
++	if (error) {
++		device_printf(dma->dev, "%s: bus_dmamem_alloc(%ju) failed: %d\n",
++			      __func__, (uintmax_t)size, error);
++		goto fail_1;
++	}
++
++	dma->dma_paddr = 0;
++	error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, size,
++				dmamap_cb, &dma->dma_paddr, BUS_DMA_NOWAIT);
++	if (error || dma->dma_paddr == 0) {
++		device_printf(dma->dev, "%s: bus_dmamap_load failed: %d\n",
++			      __func__, error);
++		goto fail_2;
++	}
++
++	*dma_addr = dma->dma_paddr;
++	return dma->dma_vaddr;
++
++fail_2:
++	bus_dmamap_unload(dma->dma_tag, dma->dma_map);
++fail_1:
++	bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
++	bus_dma_tag_destroy(dma->dma_tag);
++fail_0:
++	dma->dma_map = NULL;
++	dma->dma_tag = NULL;
++
++	return NULL;
++}
++
++void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
++{
++	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
++
++	if (dma->dma_tag == NULL)
++		return;
++	if (dma->dma_map != NULL) {
++		bus_dmamap_sync(dma->dma_tag, dma->dma_map,
++				BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
++		bus_dmamap_unload(dma->dma_tag, dma->dma_map);
++		bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
++		dma->dma_map = NULL;
++	}
++
++	bus_dma_tag_destroy(dma->dma_tag);
++	dma->dma_tag = NULL;
++}
++
++void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
++{
++	return malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
++}
++
++void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
++{
++	return malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
++}
++
++void __DWC_FREE(void *mem_ctx, void *addr)
++{
++	free(addr, M_DEVBUF);
++}
++
++
++#ifdef DWC_CRYPTOLIB
++/* dwc_crypto.h */
++
++void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
++{
++	get_random_bytes(buffer, length);
++}
++
++int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
++{
++	struct crypto_blkcipher *tfm;
++	struct blkcipher_desc desc;
++	struct scatterlist sgd;
++	struct scatterlist sgs;
++
++	tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
++	if (tfm == NULL) {
++		printk("failed to load transform for aes CBC\n");
++		return -1;
++	}
++
++	crypto_blkcipher_setkey(tfm, key, keylen);
++	crypto_blkcipher_set_iv(tfm, iv, 16);
++
++	sg_init_one(&sgd, out, messagelen);
++	sg_init_one(&sgs, message, messagelen);
++
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
++		crypto_free_blkcipher(tfm);
++		DWC_ERROR("AES CBC encryption failed");
++		return -1;
++	}
++
++	crypto_free_blkcipher(tfm);
++	return 0;
++}
++
++int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
++{
++	struct crypto_hash *tfm;
++	struct hash_desc desc;
++	struct scatterlist sg;
++
++	tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
++	if (IS_ERR(tfm)) {
++		DWC_ERROR("Failed to load transform for sha256: %ld", PTR_ERR(tfm));
++		return 0;
++	}
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	sg_init_one(&sg, message, len);
++	crypto_hash_digest(&desc, &sg, len, out);
++	crypto_free_hash(tfm);
++
++	return 1;
++}
++
++int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
++		    uint8_t *key, uint32_t keylen, uint8_t *out)
++{
++	struct crypto_hash *tfm;
++	struct hash_desc desc;
++	struct scatterlist sg;
++
++	tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
++	if (IS_ERR(tfm)) {
++		DWC_ERROR("Failed to load transform for hmac(sha256): %ld", PTR_ERR(tfm));
++		return 0;
++	}
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	sg_init_one(&sg, message, messagelen);
++	crypto_hash_setkey(tfm, key, keylen);
++	crypto_hash_digest(&desc, &sg, messagelen, out);
++	crypto_free_hash(tfm);
++
++	return 1;
++}
++
++#endif	/* DWC_CRYPTOLIB */
++
++
++/* Byte Ordering Conversions */
++
++uint32_t DWC_CPU_TO_LE32(uint32_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_CPU_TO_BE32(uint32_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_LE32_TO_CPU(uint32_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_BE32_TO_CPU(uint32_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint16_t DWC_CPU_TO_LE16(uint16_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_CPU_TO_BE16(uint16_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_LE16_TO_CPU(uint16_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_BE16_TO_CPU(uint16_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++
++/* Registers */
++
++uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	return bus_space_read_4(io->iot, io->ioh, ior);
++}
++
++#if 0
++uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	return bus_space_read_8(io->iot, io->ioh, ior);
++}
++#endif
++
++void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_4(io->iot, io->ioh, ior, value);
++}
++
++#if 0
++void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_8(io->iot, io->ioh, ior, value);
++}
++#endif
++
++void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask,
++		      uint32_t set_mask)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_4(io->iot, io->ioh, ior,
++			  (bus_space_read_4(io->iot, io->ioh, ior) &
++			   ~clear_mask) | set_mask);
++}
++
++#if 0
++void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask,
++		      uint64_t set_mask)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_8(io->iot, io->ioh, ior,
++			  (bus_space_read_8(io->iot, io->ioh, ior) &
++			   ~clear_mask) | set_mask);
++}
++#endif
++
++
++/* Locking */
++
++dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
++{
++	struct mtx *sl = DWC_ALLOC(sizeof(*sl));
++
++	if (!sl) {
++		DWC_ERROR("Cannot allocate memory for spinlock");
++		return NULL;
++	}
++
++	mtx_init(sl, "dw3spn", NULL, MTX_SPIN);
++	return (dwc_spinlock_t *)sl;
++}
++
++void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
++{
++	struct mtx *sl = (struct mtx *)lock;
++
++	mtx_destroy(sl);
++	DWC_FREE(sl);
++}
++
++void DWC_SPINLOCK(dwc_spinlock_t *lock)
++{
++	mtx_lock_spin((struct mtx *)lock);	// ???
++}
++
++void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
++{
++	mtx_unlock_spin((struct mtx *)lock);	// ???
++}
++
++void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
++{
++	mtx_lock_spin((struct mtx *)lock);
++}
++
++void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
++{
++	mtx_unlock_spin((struct mtx *)lock);
++}
++
++dwc_mutex_t *DWC_MUTEX_ALLOC(void)
++{
++	struct mtx *m;
++	dwc_mutex_t *mutex = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mtx));
++
++	if (!mutex) {
++		DWC_ERROR("Cannot allocate memory for mutex");
++		return NULL;
++	}
++
++	m = (struct mtx *)mutex;
++	mtx_init(m, "dw3mtx", NULL, MTX_DEF);
++	return mutex;
++}
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
++#else
++void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
++{
++	mtx_destroy((struct mtx *)mutex);
++	DWC_FREE(mutex);
++}
++#endif
++
++void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
++{
++	struct mtx *m = (struct mtx *)mutex;
++
++	mtx_lock(m);
++}
++
++int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
++{
++	struct mtx *m = (struct mtx *)mutex;
++
++	return mtx_trylock(m);
++}
++
++void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
++{
++	struct mtx *m = (struct mtx *)mutex;
++
++	mtx_unlock(m);
++}
++
++
++/* Timing */
++
++void DWC_UDELAY(uint32_t usecs)
++{
++	DELAY(usecs);
++}
++
++void DWC_MDELAY(uint32_t msecs)
++{
++	do {
++		DELAY(1000);
++	} while (--msecs);
++}
++
++void DWC_MSLEEP(uint32_t msecs)
++{
++	struct timeval tv;
++
++	tv.tv_sec = msecs / 1000;
++	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
++	pause("dw3slp", tvtohz(&tv));
++}
++
++uint32_t DWC_TIME(void)
++{
++	struct timeval tv;
++
++	microuptime(&tv);	// or getmicrouptime? (less precise, but faster)
++	return tv.tv_sec * 1000 + tv.tv_usec / 1000;
++}
++
++
++/* Timers */
++
++struct dwc_timer {
++	struct callout t;
++	char *name;
++	dwc_spinlock_t *lock;
++	dwc_timer_callback_t cb;
++	void *data;
++};
++
++dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
++{
++	dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
++
++	if (!t) {
++		DWC_ERROR("Cannot allocate memory for timer");
++		return NULL;
++	}
++
++	callout_init(&t->t, 1);
++
++	t->name = DWC_STRDUP(name);
++	if (!t->name) {
++		DWC_ERROR("Cannot allocate memory for timer->name");
++		goto no_name;
++	}
++
++	t->lock = DWC_SPINLOCK_ALLOC();
++	if (!t->lock) {
++		DWC_ERROR("Cannot allocate memory for lock");
++		goto no_lock;
++	}
++
++	t->cb = cb;
++	t->data = data;
++
++	return t;
++
++ no_lock:
++	DWC_FREE(t->name);
++ no_name:
++	DWC_FREE(t);
++
++	return NULL;
++}
++
++void DWC_TIMER_FREE(dwc_timer_t *timer)
++{
++	callout_stop(&timer->t);
++	DWC_SPINLOCK_FREE(timer->lock);
++	DWC_FREE(timer->name);
++	DWC_FREE(timer);
++}
++
++void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
++{
++	struct timeval tv;
++
++	tv.tv_sec = time / 1000;
++	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
++	callout_reset(&timer->t, tvtohz(&tv), timer->cb, timer->data);
++}
++
++void DWC_TIMER_CANCEL(dwc_timer_t *timer)
++{
++	callout_stop(&timer->t);
++}
++
++
++/* Wait Queues */
++
++struct dwc_waitq {
++	struct mtx lock;
++	int abort;
++};
++
++dwc_waitq_t *DWC_WAITQ_ALLOC(void)
++{
++	dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
++
++	if (!wq) {
++		DWC_ERROR("Cannot allocate memory for waitqueue");
++		return NULL;
++	}
++
++	mtx_init(&wq->lock, "dw3wtq", NULL, MTX_DEF);
++	wq->abort = 0;
++
++	return wq;
++}
++
++void DWC_WAITQ_FREE(dwc_waitq_t *wq)
++{
++	mtx_destroy(&wq->lock);
++	DWC_FREE(wq);
++}
++
++int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
++{
++//	intrmask_t ipl;
++	int result = 0;
++
++	mtx_lock(&wq->lock);
++//	ipl = splbio();
++
++	/* Skip the sleep if already aborted or triggered */
++	if (!wq->abort && !cond(data)) {
++//		splx(ipl);
++		result = msleep(wq, &wq->lock, PCATCH, "dw3wat", 0); // infinite timeout
++//		ipl = splbio();
++	}
++
++	if (result == ERESTART) {	// signaled - restart
++		result = -DWC_E_RESTART;
++
++	} else if (result == EINTR) {	// signaled - interrupt
++		result = -DWC_E_ABORT;
++
++	} else if (wq->abort) {
++		result = -DWC_E_ABORT;
++
++	} else {
++		result = 0;
++	}
++
++	wq->abort = 0;
++//	splx(ipl);
++	mtx_unlock(&wq->lock);
++	return result;
++}
++
++int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
++			       void *data, int32_t msecs)
++{
++	struct timeval tv, tv1, tv2;
++//	intrmask_t ipl;
++	int result = 0;
++
++	tv.tv_sec = msecs / 1000;
++	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
++
++	mtx_lock(&wq->lock);
++//	ipl = splbio();
++
++	/* Skip the sleep if already aborted or triggered */
++	if (!wq->abort && !cond(data)) {
++//		splx(ipl);
++		getmicrouptime(&tv1);
++		result = msleep(wq, &wq->lock, PCATCH, "dw3wto", tvtohz(&tv));
++		getmicrouptime(&tv2);
++//		ipl = splbio();
++	}
++
++	if (result == 0) {			// awoken
++		if (wq->abort) {
++			result = -DWC_E_ABORT;
++		} else {
++			tv2.tv_usec -= tv1.tv_usec;
++			if (tv2.tv_usec < 0) {
++				tv2.tv_usec += 1000000;
++				tv2.tv_sec--;
++			}
++
++			tv2.tv_sec -= tv1.tv_sec;
++			result = tv2.tv_sec * 1000 + tv2.tv_usec / 1000;
++			result = msecs - result;
++			if (result <= 0)
++				result = 1;
++		}
++	} else if (result == ERESTART) {	// signaled - restart
++		result = -DWC_E_RESTART;
++
++	} else if (result == EINTR) {		// signaled - interrupt
++		result = -DWC_E_ABORT;
++
++	} else {				// timed out
++		result = -DWC_E_TIMEOUT;
++	}
++
++	wq->abort = 0;
++//	splx(ipl);
++	mtx_unlock(&wq->lock);
++	return result;
++}
++
++void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
++{
++	wakeup(wq);
++}
++
++void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
++{
++//	intrmask_t ipl;
++
++	mtx_lock(&wq->lock);
++//	ipl = splbio();
++	wq->abort = 1;
++	wakeup(wq);
++//	splx(ipl);
++	mtx_unlock(&wq->lock);
++}
++
++
++/* Threading */
++
++struct dwc_thread {
++	struct proc *proc;
++	int abort;
++};
++
++dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
++{
++	int retval;
++	dwc_thread_t *thread = DWC_ALLOC(sizeof(*thread));
++
++	if (!thread) {
++		return NULL;
++	}
++
++	thread->abort = 0;
++	retval = kthread_create((void (*)(void *))func, data, &thread->proc,
++				RFPROC | RFNOWAIT, 0, "%s", name);
++	if (retval) {
++		DWC_FREE(thread);
++		return NULL;
++	}
++
++	return thread;
++}
++
++int DWC_THREAD_STOP(dwc_thread_t *thread)
++{
++	int retval;
++
++	thread->abort = 1;
++	retval = tsleep(&thread->abort, 0, "dw3stp", 60 * hz);
++
++	if (retval == 0) {
++		/* DWC_THREAD_EXIT() will free the thread struct */
++		return 0;
++	}
++
++	/* NOTE: We leak the thread struct if thread doesn't die */
++
++	if (retval == EWOULDBLOCK) {
++		return -DWC_E_TIMEOUT;
++	}
++
++	return -DWC_E_UNKNOWN;
++}
++
++dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread)
++{
++	return thread->abort;
++}
++
++void DWC_THREAD_EXIT(dwc_thread_t *thread)
++{
++	wakeup(&thread->abort);
++	DWC_FREE(thread);
++	kthread_exit(0);
++}
++
++
++/* tasklets
++ - Runs in interrupt context (cannot sleep)
++ - Each tasklet runs on a single CPU [ How can we ensure this on FreeBSD? Does it matter? ]
++ - Different tasklets can be running simultaneously on different CPUs [ shouldn't matter ]
++ */
++struct dwc_tasklet {
++	struct task t;
++	dwc_tasklet_callback_t cb;
++	void *data;
++};
++
++static void tasklet_callback(void *data, int pending)	// what to do with pending ???
++{
++	dwc_tasklet_t *task = (dwc_tasklet_t *)data;
++
++	task->cb(task->data);
++}
++
++dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
++{
++	dwc_tasklet_t *task = DWC_ALLOC(sizeof(*task));
++
++	if (task) {
++		task->cb = cb;
++		task->data = data;
++		TASK_INIT(&task->t, 0, tasklet_callback, task);
++	} else {
++		DWC_ERROR("Cannot allocate memory for tasklet");
++	}
++
++	return task;
++}
++
++void DWC_TASK_FREE(dwc_tasklet_t *task)
++{
++	taskqueue_drain(taskqueue_fast, &task->t);	// ???
++	DWC_FREE(task);
++}
++
++void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
++{
++	/* Uses predefined system queue */
++	taskqueue_enqueue_fast(taskqueue_fast, &task->t);
++}
++
++
++/* workqueues
++ - Runs in process context (can sleep)
++ */
++typedef struct work_container {
++	dwc_work_callback_t cb;
++	void *data;
++	dwc_workq_t *wq;
++	char *name;
++	int hz;
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_ENTRY(work_container) entry;
++#endif
++	struct task task;
++} work_container_t;
++
++#ifdef DEBUG
++DWC_CIRCLEQ_HEAD(work_container_queue, work_container);
++#endif
++
++struct dwc_workq {
++	struct taskqueue *taskq;
++	dwc_spinlock_t *lock;
++	dwc_waitq_t *waitq;
++	int pending;
++
++#ifdef DEBUG
++	struct work_container_queue entries;
++#endif
++};
++
++static void do_work(void *data, int pending)	// what to do with pending ???
++{
++	work_container_t *container = (work_container_t *)data;
++	dwc_workq_t *wq = container->wq;
++	dwc_irqflags_t flags;
++
++	if (container->hz) {
++		pause("dw3wrk", container->hz);
++	}
++
++	container->cb(container->data);
++	DWC_DEBUG("Work done: %s, container=%p", container->name, container);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_REMOVE(&wq->entries, container, entry);
++#endif
++	if (container->name)
++		DWC_FREE(container->name);
++	DWC_FREE(container);
++	wq->pending--;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++}
++
++static int work_done(void *data)
++{
++	dwc_workq_t *workq = (dwc_workq_t *)data;
++
++	return workq->pending == 0;
++}
++
++int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
++{
++	return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
++}
++
++dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
++{
++	dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
++
++	if (!wq) {
++		DWC_ERROR("Cannot allocate memory for workqueue");
++		return NULL;
++	}
++
++	wq->taskq = taskqueue_create(name, M_NOWAIT, taskqueue_thread_enqueue, &wq->taskq);
++	if (!wq->taskq) {
++		DWC_ERROR("Cannot allocate memory for taskqueue");
++		goto no_taskq;
++	}
++
++	wq->pending = 0;
++
++	wq->lock = DWC_SPINLOCK_ALLOC();
++	if (!wq->lock) {
++		DWC_ERROR("Cannot allocate memory for spinlock");
++		goto no_lock;
++	}
++
++	wq->waitq = DWC_WAITQ_ALLOC();
++	if (!wq->waitq) {
++		DWC_ERROR("Cannot allocate memory for waitqueue");
++		goto no_waitq;
++	}
++
++	taskqueue_start_threads(&wq->taskq, 1, PWAIT, "%s taskq", "dw3tsk");
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_INIT(&wq->entries);
++#endif
++	return wq;
++
++ no_waitq:
++	DWC_SPINLOCK_FREE(wq->lock);
++ no_lock:
++	taskqueue_free(wq->taskq);
++ no_taskq:
++	DWC_FREE(wq);
++
++	return NULL;
++}
++
++void DWC_WORKQ_FREE(dwc_workq_t *wq)
++{
++#ifdef DEBUG
++	dwc_irqflags_t flags;
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++
++	if (wq->pending != 0) {
++		struct work_container *container;
++
++		DWC_ERROR("Destroying work queue with pending work");
++
++		DWC_CIRCLEQ_FOREACH(container, &wq->entries, entry) {
++			DWC_ERROR("Work %s still pending", container->name);
++		}
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++#endif
++	DWC_WAITQ_FREE(wq->waitq);
++	DWC_SPINLOCK_FREE(wq->lock);
++	taskqueue_free(wq->taskq);
++	DWC_FREE(wq);
++}
++
++void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
++			char *format, ...)
++{
++	dwc_irqflags_t flags;
++	work_container_t *container;
++	static char name[128];
++	va_list args;
++
++	va_start(args, format);
++	DWC_VSNPRINTF(name, 128, format, args);
++	va_end(args);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	wq->pending++;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++
++	container = DWC_ALLOC_ATOMIC(sizeof(*container));
++	if (!container) {
++		DWC_ERROR("Cannot allocate memory for container");
++		return;
++	}
++
++	container->name = DWC_STRDUP(name);
++	if (!container->name) {
++		DWC_ERROR("Cannot allocate memory for container->name");
++		DWC_FREE(container);
++		return;
++	}
++
++	container->cb = cb;
++	container->data = data;
++	container->wq = wq;
++	container->hz = 0;
++
++	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
++
++	TASK_INIT(&container->task, 0, do_work, container);
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
++#endif
++	taskqueue_enqueue_fast(wq->taskq, &container->task);
++}
++
++void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
++				void *data, uint32_t time, char *format, ...)
++{
++	dwc_irqflags_t flags;
++	work_container_t *container;
++	static char name[128];
++	struct timeval tv;
++	va_list args;
++
++	va_start(args, format);
++	DWC_VSNPRINTF(name, 128, format, args);
++	va_end(args);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	wq->pending++;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++
++	container = DWC_ALLOC_ATOMIC(sizeof(*container));
++	if (!container) {
++		DWC_ERROR("Cannot allocate memory for container");
++		return;
++	}
++
++	container->name = DWC_STRDUP(name);
++	if (!container->name) {
++		DWC_ERROR("Cannot allocate memory for container->name");
++		DWC_FREE(container);
++		return;
++	}
++
++	container->cb = cb;
++	container->data = data;
++	container->wq = wq;
++
++	tv.tv_sec = time / 1000;
++	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
++	container->hz = tvtohz(&tv);
++
++	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
++
++	TASK_INIT(&container->task, 0, do_work, container);
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
++#endif
++	taskqueue_enqueue_fast(wq->taskq, &container->task);
++}
++
++int DWC_WORKQ_PENDING(dwc_workq_t *wq)
++{
++	return wq->pending;
++}
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_common_linux.c
+@@ -0,0 +1,1409 @@
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/kthread.h>
++
++#ifdef DWC_CCLIB
++# include "dwc_cc.h"
++#endif
++
++#ifdef DWC_CRYPTOLIB
++# include "dwc_modpow.h"
++# include "dwc_dh.h"
++# include "dwc_crypto.h"
++#endif
++
++#ifdef DWC_NOTIFYLIB
++# include "dwc_notifier.h"
++#endif
++
++/* OS-Level Implementations */
++
++/* This is the Linux kernel implementation of the DWC platform library. */
++#include <linux/moduleparam.h>
++#include <linux/ctype.h>
++#include <linux/crypto.h>
++#include <linux/delay.h>
++#include <linux/device.h>
++#include <linux/dma-mapping.h>
++#include <linux/cdev.h>
++#include <linux/errno.h>
++#include <linux/interrupt.h>
++#include <linux/jiffies.h>
++#include <linux/list.h>
++#include <linux/pci.h>
++#include <linux/random.h>
++#include <linux/scatterlist.h>
++#include <linux/slab.h>
++#include <linux/stat.h>
++#include <linux/string.h>
++#include <linux/timer.h>
++#include <linux/usb.h>
++
++#include <linux/version.h>
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++# include <linux/usb/gadget.h>
++#else
++# include <linux/usb_gadget.h>
++#endif
++
++#include <asm/io.h>
++#include <asm/page.h>
++#include <asm/uaccess.h>
++#include <asm/unaligned.h>
++
++#include "dwc_os.h"
++#include "dwc_list.h"
++
++
++/* MISC */
++
++void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
++{
++	return memset(dest, byte, size);
++}
++
++void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
++{
++	return memcpy(dest, src, size);
++}
++
++void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
++{
++	return memmove(dest, src, size);
++}
++
++int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
++{
++	return memcmp(m1, m2, size);
++}
++
++int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
++{
++	return strncmp(s1, s2, size);
++}
++
++int DWC_STRCMP(void *s1, void *s2)
++{
++	return strcmp(s1, s2);
++}
++
++int DWC_STRLEN(char const *str)
++{
++	return strlen(str);
++}
++
++char *DWC_STRCPY(char *to, char const *from)
++{
++	return strcpy(to, from);
++}
++
++char *DWC_STRDUP(char const *str)
++{
++	int len = DWC_STRLEN(str) + 1;
++	char *new = DWC_ALLOC_ATOMIC(len);
++
++	if (!new) {
++		return NULL;
++	}
++
++	DWC_MEMCPY(new, str, len);
++	return new;
++}
++
++int DWC_ATOI(const char *str, int32_t *value)
++{
++	char *end = NULL;
++
++	*value = simple_strtol(str, &end, 0);
++	if (*end == '\0') {
++		return 0;
++	}
++
++	return -1;
++}
++
++int DWC_ATOUI(const char *str, uint32_t *value)
++{
++	char *end = NULL;
++
++	*value = simple_strtoul(str, &end, 0);
++	if (*end == '\0') {
++		return 0;
++	}
++
++	return -1;
++}
++
++
++#ifdef DWC_UTFLIB
++/* From usbstring.c */
++
++int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
++{
++	int	count = 0;
++	u8	c;
++	u16	uchar;
++
++	/* this insists on correct encodings, though not minimal ones.
++	 * BUT it currently rejects legit 4-byte UTF-8 code points,
++	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
++	 */
++	while (len != 0 && (c = (u8) *s++) != 0) {
++		if (unlikely(c & 0x80)) {
++			// 2-byte sequence:
++			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
++			if ((c & 0xe0) == 0xc0) {
++				uchar = (c & 0x1f) << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++			// 3-byte sequence (most CJKV characters):
++			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
++			} else if ((c & 0xf0) == 0xe0) {
++				uchar = (c & 0x0f) << 12;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++				/* no bogus surrogates */
++				if (0xd800 <= uchar && uchar <= 0xdfff)
++					goto fail;
++
++			// 4-byte sequence (surrogate pairs, currently rare):
++			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
++			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
++			// (uuuuu = wwww + 1)
++			// FIXME accept the surrogate code points (only)
++			} else
++				goto fail;
++		} else
++			uchar = c;
++		put_unaligned (cpu_to_le16 (uchar), cp++);
++		count++;
++		len--;
++	}
++	return count;
++fail:
++	return -1;
++}
++#endif	/* DWC_UTFLIB */
++
++
++/* dwc_debug.h */
++
++dwc_bool_t DWC_IN_IRQ(void)
++{
++	return in_irq();
++}
++
++dwc_bool_t DWC_IN_BH(void)
++{
++	return in_softirq();
++}
++
++void DWC_VPRINTF(char *format, va_list args)
++{
++	vprintk(format, args);
++}
++
++int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
++{
++	return vsnprintf(str, size, format, args);
++}
++
++void DWC_PRINTF(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++int DWC_SPRINTF(char *buffer, char *format, ...)
++{
++	int retval;
++	va_list args;
++
++	va_start(args, format);
++	retval = vsprintf(buffer, format, args);
++	va_end(args);
++	return retval;
++}
++
++int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
++{
++	int retval;
++	va_list args;
++
++	va_start(args, format);
++	retval = vsnprintf(buffer, size, format, args);
++	va_end(args);
++	return retval;
++}
++
++void __DWC_WARN(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_PRINTF(KERN_WARNING);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++void __DWC_ERROR(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_PRINTF(KERN_ERR);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++void DWC_EXCEPTION(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_PRINTF(KERN_ERR);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++	BUG_ON(1);
++}
++
++#ifdef DEBUG
++void __DWC_DEBUG(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_PRINTF(KERN_DEBUG);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++#endif
++
++
++/* dwc_mem.h */
++
++#if 0
++dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
++				uint32_t align,
++				uint32_t alloc)
++{
++	struct dma_pool *pool = dma_pool_create("Pool", NULL,
++						size, align, alloc);
++	return (dwc_pool_t *)pool;
++}
++
++void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
++{
++	dma_pool_destroy((struct dma_pool *)pool);
++}
++
++void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
++{
++	return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
++}
++
++void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
++{
++	void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
++	memset(..);
++}
++
++void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
++{
++	dma_pool_free(pool, vaddr, daddr);
++}
++#endif
++
++void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
++{
++	return dma_alloc_coherent(dma_ctx, size, dma_addr, GFP_KERNEL | GFP_DMA32);
++}
++
++void *__DWC_DMA_ALLOC_ATOMIC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
++{
++	return dma_alloc_coherent(dma_ctx, size, dma_addr, GFP_ATOMIC);
++}
++
++void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
++{
++	dma_free_coherent(dma_ctx, size, virt_addr, dma_addr);
++}
++
++void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
++{
++	return kzalloc(size, GFP_KERNEL);
++}
++
++void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
++{
++	return kzalloc(size, GFP_ATOMIC);
++}
++
++void __DWC_FREE(void *mem_ctx, void *addr)
++{
++	kfree(addr);
++}
++
++
++#ifdef DWC_CRYPTOLIB
++/* dwc_crypto.h */
++
++void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
++{
++	get_random_bytes(buffer, length);
++}
++
++int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
++{
++	struct crypto_blkcipher *tfm;
++	struct blkcipher_desc desc;
++	struct scatterlist sgd;
++	struct scatterlist sgs;
++
++	tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
++	if (tfm == NULL) {
++		printk("failed to load transform for aes CBC\n");
++		return -1;
++	}
++
++	crypto_blkcipher_setkey(tfm, key, keylen);
++	crypto_blkcipher_set_iv(tfm, iv, 16);
++
++	sg_init_one(&sgd, out, messagelen);
++	sg_init_one(&sgs, message, messagelen);
++
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
++		crypto_free_blkcipher(tfm);
++		DWC_ERROR("AES CBC encryption failed");
++		return -1;
++	}
++
++	crypto_free_blkcipher(tfm);
++	return 0;
++}
++
++int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
++{
++	struct crypto_hash *tfm;
++	struct hash_desc desc;
++	struct scatterlist sg;
++
++	tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
++	if (IS_ERR(tfm)) {
++		DWC_ERROR("Failed to load transform for sha256: %ld\n", PTR_ERR(tfm));
++		return 0;
++	}
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	sg_init_one(&sg, message, len);
++	crypto_hash_digest(&desc, &sg, len, out);
++	crypto_free_hash(tfm);
++
++	return 1;
++}
++
++int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
++		    uint8_t *key, uint32_t keylen, uint8_t *out)
++{
++	struct crypto_hash *tfm;
++	struct hash_desc desc;
++	struct scatterlist sg;
++
++	tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
++	if (IS_ERR(tfm)) {
++		DWC_ERROR("Failed to load transform for hmac(sha256): %ld\n", PTR_ERR(tfm));
++		return 0;
++	}
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	sg_init_one(&sg, message, messagelen);
++	crypto_hash_setkey(tfm, key, keylen);
++	crypto_hash_digest(&desc, &sg, messagelen, out);
++	crypto_free_hash(tfm);
++
++	return 1;
++}
++#endif	/* DWC_CRYPTOLIB */
++
++
++/* Byte Ordering Conversions */
++
++uint32_t DWC_CPU_TO_LE32(uint32_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_CPU_TO_BE32(uint32_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_LE32_TO_CPU(uint32_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_BE32_TO_CPU(uint32_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint16_t DWC_CPU_TO_LE16(uint16_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_CPU_TO_BE16(uint16_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_LE16_TO_CPU(uint16_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_BE16_TO_CPU(uint16_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++
++/* Registers */
++
++uint32_t DWC_READ_REG32(uint32_t volatile *reg)
++{
++	return readl(reg);
++}
++
++#if 0
++uint64_t DWC_READ_REG64(uint64_t volatile *reg)
++{
++}
++#endif
++
++void DWC_WRITE_REG32(uint32_t volatile *reg, uint32_t value)
++{
++	writel(value, reg);
++}
++
++#if 0
++void DWC_WRITE_REG64(uint64_t volatile *reg, uint64_t value)
++{
++}
++#endif
++
++void DWC_MODIFY_REG32(uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask)
++{
++	writel((readl(reg) & ~clear_mask) | set_mask, reg);
++}
++
++#if 0
++void DWC_MODIFY_REG64(uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask)
++{
++}
++#endif
++
++
++/* Locking */
++
++dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
++{
++	spinlock_t *sl = (spinlock_t *)1;
++
++#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
++	sl = DWC_ALLOC(sizeof(*sl));
++	if (!sl) {
++		DWC_ERROR("Cannot allocate memory for spinlock\n");
++		return NULL;
++	}
++
++	spin_lock_init(sl);
++#endif
++	return (dwc_spinlock_t *)sl;
++}
++
++void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
++{
++#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
++	DWC_FREE(lock);
++#endif
++}
++
++void DWC_SPINLOCK(dwc_spinlock_t *lock)
++{
++#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
++	spin_lock((spinlock_t *)lock);
++#endif
++}
++
++void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
++{
++#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
++	spin_unlock((spinlock_t *)lock);
++#endif
++}
++
++void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
++{
++	dwc_irqflags_t f;
++
++#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
++	spin_lock_irqsave((spinlock_t *)lock, f);
++#else
++	local_irq_save(f);
++#endif
++	*flags = f;
++}
++
++void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
++{
++#if defined(CONFIG_PREEMPT) || defined(CONFIG_SMP)
++	spin_unlock_irqrestore((spinlock_t *)lock, flags);
++#else
++	local_irq_restore(flags);
++#endif
++}
++
++dwc_mutex_t *DWC_MUTEX_ALLOC(void)
++{
++	struct mutex *m;
++	dwc_mutex_t *mutex = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mutex));
++
++	if (!mutex) {
++		DWC_ERROR("Cannot allocate memory for mutex\n");
++		return NULL;
++	}
++
++	m = (struct mutex *)mutex;
++	mutex_init(m);
++	return mutex;
++}
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
++#else
++void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
++{
++	mutex_destroy((struct mutex *)mutex);
++	DWC_FREE(mutex);
++}
++#endif
++
++void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
++{
++	struct mutex *m = (struct mutex *)mutex;
++	mutex_lock(m);
++}
++
++int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
++{
++	struct mutex *m = (struct mutex *)mutex;
++	return mutex_trylock(m);
++}
++
++void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
++{
++	struct mutex *m = (struct mutex *)mutex;
++	mutex_unlock(m);
++}
++
++
++/* Timing */
++
++void DWC_UDELAY(uint32_t usecs)
++{
++	udelay(usecs);
++}
++
++void DWC_MDELAY(uint32_t msecs)
++{
++	mdelay(msecs);
++}
++
++void DWC_MSLEEP(uint32_t msecs)
++{
++	msleep(msecs);
++}
++
++uint32_t DWC_TIME(void)
++{
++	return jiffies_to_msecs(jiffies);
++}
++
++
++/* Timers */
++
++struct dwc_timer {
++	struct timer_list t;
++	char *name;
++	dwc_timer_callback_t cb;
++	void *data;
++	uint8_t scheduled;
++	dwc_spinlock_t *lock;
++};
++
++static void timer_callback(struct timer_list *tt)
++{
++	dwc_timer_t *timer = from_timer(timer, tt, t);
++	dwc_irqflags_t flags;
++
++	DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
++	timer->scheduled = 0;
++	DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
++	DWC_DEBUGC("Timer %s callback", timer->name);
++	timer->cb(timer->data);
++}
++
++dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
++{
++	dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
++
++	if (!t) {
++		DWC_ERROR("Cannot allocate memory for timer");
++		return NULL;
++	}
++
++	t->name = DWC_STRDUP(name);
++	if (!t->name) {
++		DWC_ERROR("Cannot allocate memory for timer->name");
++		goto no_name;
++	}
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
++	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(t->lock);
++#else
++	t->lock = DWC_SPINLOCK_ALLOC();
++#endif
++	if (!t->lock) {
++		DWC_ERROR("Cannot allocate memory for lock");
++		goto no_lock;
++	}
++
++	t->scheduled = 0;
++	t->t.expires = jiffies;
++	timer_setup(&t->t, timer_callback, 0);
++
++	t->cb = cb;
++	t->data = data;
++
++	return t;
++
++ no_lock:
++	DWC_FREE(t->name);
++ no_name:
++	DWC_FREE(t);
++	return NULL;
++}
++
++void DWC_TIMER_FREE(dwc_timer_t *timer)
++{
++	dwc_irqflags_t flags;
++
++	DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
++
++	if (timer->scheduled) {
++		del_timer(&timer->t);
++		timer->scheduled = 0;
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
++	DWC_SPINLOCK_FREE(timer->lock);
++	DWC_FREE(timer->name);
++	DWC_FREE(timer);
++}
++
++void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
++{
++	dwc_irqflags_t flags;
++
++	DWC_SPINLOCK_IRQSAVE(timer->lock, &flags);
++
++	if (!timer->scheduled) {
++		timer->scheduled = 1;
++		DWC_DEBUGC("Scheduling timer %s to expire in +%d msec", timer->name, time);
++		timer->t.expires = jiffies + msecs_to_jiffies(time);
++		add_timer(&timer->t);
++	} else {
++		DWC_DEBUGC("Modifying timer %s to expire in +%d msec", timer->name, time);
++		mod_timer(&timer->t, jiffies + msecs_to_jiffies(time));
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(timer->lock, flags);
++}
++
++void DWC_TIMER_CANCEL(dwc_timer_t *timer)
++{
++	del_timer(&timer->t);
++}
++
++
++/* Wait Queues */
++
++struct dwc_waitq {
++	wait_queue_head_t queue;
++	int abort;
++};
++
++dwc_waitq_t *DWC_WAITQ_ALLOC(void)
++{
++	dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
++
++	if (!wq) {
++		DWC_ERROR("Cannot allocate memory for waitqueue\n");
++		return NULL;
++	}
++
++	init_waitqueue_head(&wq->queue);
++	wq->abort = 0;
++	return wq;
++}
++
++void DWC_WAITQ_FREE(dwc_waitq_t *wq)
++{
++	DWC_FREE(wq);
++}
++
++int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
++{
++	int result = wait_event_interruptible(wq->queue,
++					      cond(data) || wq->abort);
++	if (result == -ERESTARTSYS) {
++		wq->abort = 0;
++		return -DWC_E_RESTART;
++	}
++
++	if (wq->abort == 1) {
++		wq->abort = 0;
++		return -DWC_E_ABORT;
++	}
++
++	wq->abort = 0;
++
++	if (result == 0) {
++		return 0;
++	}
++
++	return -DWC_E_UNKNOWN;
++}
++
++int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
++			       void *data, int32_t msecs)
++{
++	int32_t tmsecs;
++	int result = wait_event_interruptible_timeout(wq->queue,
++						      cond(data) || wq->abort,
++						      msecs_to_jiffies(msecs));
++	if (result == -ERESTARTSYS) {
++		wq->abort = 0;
++		return -DWC_E_RESTART;
++	}
++
++	if (wq->abort == 1) {
++		wq->abort = 0;
++		return -DWC_E_ABORT;
++	}
++
++	wq->abort = 0;
++
++	if (result > 0) {
++		tmsecs = jiffies_to_msecs(result);
++		if (!tmsecs) {
++			return 1;
++		}
++
++		return tmsecs;
++	}
++
++	if (result == 0) {
++		return -DWC_E_TIMEOUT;
++	}
++
++	return -DWC_E_UNKNOWN;
++}
++
++void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
++{
++	wq->abort = 0;
++	wake_up_interruptible(&wq->queue);
++}
++
++void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
++{
++	wq->abort = 1;
++	wake_up_interruptible(&wq->queue);
++}
++
++
++/* Threading */
++
++dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
++{
++	struct task_struct *thread = kthread_run(func, data, name);
++
++	if (thread == ERR_PTR(-ENOMEM)) {
++		return NULL;
++	}
++
++	return (dwc_thread_t *)thread;
++}
++
++int DWC_THREAD_STOP(dwc_thread_t *thread)
++{
++	return kthread_stop((struct task_struct *)thread);
++}
++
++dwc_bool_t DWC_THREAD_SHOULD_STOP(void)
++{
++	return kthread_should_stop();
++}
++
++
++/* tasklets
++ - run in interrupt context (cannot sleep)
++ - each tasklet runs on a single CPU
++ - different tasklets can be running simultaneously on different CPUs
++ */
++struct dwc_tasklet {
++	struct tasklet_struct t;
++	dwc_tasklet_callback_t cb;
++	void *data;
++};
++
++static void tasklet_callback(unsigned long data)
++{
++	dwc_tasklet_t *t = (dwc_tasklet_t *)data;
++	t->cb(t->data);
++}
++
++dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
++{
++	dwc_tasklet_t *t = DWC_ALLOC(sizeof(*t));
++
++	if (t) {
++		t->cb = cb;
++		t->data = data;
++		tasklet_init(&t->t, tasklet_callback, (unsigned long)t);
++	} else {
++		DWC_ERROR("Cannot allocate memory for tasklet\n");
++	}
++
++	return t;
++}
++
++void DWC_TASK_FREE(dwc_tasklet_t *task)
++{
++	DWC_FREE(task);
++}
++
++void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
++{
++	tasklet_schedule(&task->t);
++}
++
++void DWC_TASK_HI_SCHEDULE(dwc_tasklet_t *task)
++{
++	tasklet_hi_schedule(&task->t);
++}
++
++
++/* workqueues
++ - run in process context (can sleep)
++ */
++typedef struct work_container {
++	dwc_work_callback_t cb;
++	void *data;
++	dwc_workq_t *wq;
++	char *name;
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_ENTRY(work_container) entry;
++#endif
++	struct delayed_work work;
++} work_container_t;
++
++#ifdef DEBUG
++DWC_CIRCLEQ_HEAD(work_container_queue, work_container);
++#endif
++
++struct dwc_workq {
++	struct workqueue_struct *wq;
++	dwc_spinlock_t *lock;
++	dwc_waitq_t *waitq;
++	int pending;
++
++#ifdef DEBUG
++	struct work_container_queue entries;
++#endif
++};
++
++static void do_work(struct work_struct *work)
++{
++	dwc_irqflags_t flags;
++	struct delayed_work *dw = container_of(work, struct delayed_work, work);
++	work_container_t *container = container_of(dw, struct work_container, work);
++	dwc_workq_t *wq = container->wq;
++
++	container->cb(container->data);
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_REMOVE(&wq->entries, container, entry);
++#endif
++	DWC_DEBUGC("Work done: %s, container=%p", container->name, container);
++	if (container->name) {
++		DWC_FREE(container->name);
++	}
++	DWC_FREE(container);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	wq->pending--;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++}
++
++static int work_done(void *data)
++{
++	dwc_workq_t *workq = (dwc_workq_t *)data;
++	return workq->pending == 0;
++}
++
++int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
++{
++	return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
++}
++
++dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
++{
++	dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
++
++	if (!wq) {
++		return NULL;
++	}
++
++	wq->wq = create_singlethread_workqueue(name);
++	if (!wq->wq) {
++		goto no_wq;
++	}
++
++	wq->pending = 0;
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
++	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(wq->lock);
++#else
++	wq->lock = DWC_SPINLOCK_ALLOC();
++#endif
++	if (!wq->lock) {
++		goto no_lock;
++	}
++
++	wq->waitq = DWC_WAITQ_ALLOC();
++	if (!wq->waitq) {
++		goto no_waitq;
++	}
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_INIT(&wq->entries);
++#endif
++	return wq;
++
++ no_waitq:
++	DWC_SPINLOCK_FREE(wq->lock);
++ no_lock:
++	destroy_workqueue(wq->wq);
++ no_wq:
++	DWC_FREE(wq);
++
++	return NULL;
++}
++
++void DWC_WORKQ_FREE(dwc_workq_t *wq)
++{
++#ifdef DEBUG
++	if (wq->pending != 0) {
++		struct work_container *wc;
++		DWC_ERROR("Destroying work queue with pending work");
++		DWC_CIRCLEQ_FOREACH(wc, &wq->entries, entry) {
++			DWC_ERROR("Work %s still pending", wc->name);
++		}
++	}
++#endif
++	destroy_workqueue(wq->wq);
++	DWC_SPINLOCK_FREE(wq->lock);
++	DWC_WAITQ_FREE(wq->waitq);
++	DWC_FREE(wq);
++}
++
++void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
++			char *format, ...)
++{
++	dwc_irqflags_t flags;
++	work_container_t *container;
++	static char name[128];
++	va_list args;
++
++	va_start(args, format);
++	DWC_VSNPRINTF(name, 128, format, args);
++	va_end(args);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	wq->pending++;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++
++	container = DWC_ALLOC_ATOMIC(sizeof(*container));
++	if (!container) {
++		DWC_ERROR("Cannot allocate memory for container\n");
++		return;
++	}
++
++	container->name = DWC_STRDUP(name);
++	if (!container->name) {
++		DWC_ERROR("Cannot allocate memory for container->name\n");
++		DWC_FREE(container);
++		return;
++	}
++
++	container->cb = cb;
++	container->data = data;
++	container->wq = wq;
++	DWC_DEBUGC("Queueing work: %s, container=%p", container->name, container);
++	INIT_WORK(&container->work.work, do_work);
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
++#endif
++	queue_work(wq->wq, &container->work.work);
++}
++
++void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
++				void *data, uint32_t time, char *format, ...)
++{
++	dwc_irqflags_t flags;
++	work_container_t *container;
++	static char name[128];
++	va_list args;
++
++	va_start(args, format);
++	DWC_VSNPRINTF(name, 128, format, args);
++	va_end(args);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	wq->pending++;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++
++	container = DWC_ALLOC_ATOMIC(sizeof(*container));
++	if (!container) {
++		DWC_ERROR("Cannot allocate memory for container\n");
++		return;
++	}
++
++	container->name = DWC_STRDUP(name);
++	if (!container->name) {
++		DWC_ERROR("Cannot allocate memory for container->name\n");
++		DWC_FREE(container);
++		return;
++	}
++
++	container->cb = cb;
++	container->data = data;
++	container->wq = wq;
++	DWC_DEBUGC("Queueing work: %s, container=%p", container->name, container);
++	INIT_DELAYED_WORK(&container->work, do_work);
++
++#ifdef DEBUG
++	DWC_CIRCLEQ_INSERT_TAIL(&wq->entries, container, entry);
++#endif
++	queue_delayed_work(wq->wq, &container->work, msecs_to_jiffies(time));
++}
++
++int DWC_WORKQ_PENDING(dwc_workq_t *wq)
++{
++	return wq->pending;
++}
++
++
++#ifdef DWC_LIBMODULE
++
++#ifdef DWC_CCLIB
++/* CC */
++EXPORT_SYMBOL(dwc_cc_if_alloc);
++EXPORT_SYMBOL(dwc_cc_if_free);
++EXPORT_SYMBOL(dwc_cc_clear);
++EXPORT_SYMBOL(dwc_cc_add);
++EXPORT_SYMBOL(dwc_cc_remove);
++EXPORT_SYMBOL(dwc_cc_change);
++EXPORT_SYMBOL(dwc_cc_data_for_save);
++EXPORT_SYMBOL(dwc_cc_restore_from_data);
++EXPORT_SYMBOL(dwc_cc_match_chid);
++EXPORT_SYMBOL(dwc_cc_match_cdid);
++EXPORT_SYMBOL(dwc_cc_ck);
++EXPORT_SYMBOL(dwc_cc_chid);
++EXPORT_SYMBOL(dwc_cc_cdid);
++EXPORT_SYMBOL(dwc_cc_name);
++#endif	/* DWC_CCLIB */
++
++#ifdef DWC_CRYPTOLIB
++# ifndef CONFIG_MACH_IPMATE
++/* Modpow */
++EXPORT_SYMBOL(dwc_modpow);
++
++/* DH */
++EXPORT_SYMBOL(dwc_dh_modpow);
++EXPORT_SYMBOL(dwc_dh_derive_keys);
++EXPORT_SYMBOL(dwc_dh_pk);
++# endif	/* CONFIG_MACH_IPMATE */
++
++/* Crypto */
++EXPORT_SYMBOL(dwc_wusb_aes_encrypt);
++EXPORT_SYMBOL(dwc_wusb_cmf);
++EXPORT_SYMBOL(dwc_wusb_prf);
++EXPORT_SYMBOL(dwc_wusb_fill_ccm_nonce);
++EXPORT_SYMBOL(dwc_wusb_gen_nonce);
++EXPORT_SYMBOL(dwc_wusb_gen_key);
++EXPORT_SYMBOL(dwc_wusb_gen_mic);
++#endif	/* DWC_CRYPTOLIB */
++
++/* Notification */
++#ifdef DWC_NOTIFYLIB
++EXPORT_SYMBOL(dwc_alloc_notification_manager);
++EXPORT_SYMBOL(dwc_free_notification_manager);
++EXPORT_SYMBOL(dwc_register_notifier);
++EXPORT_SYMBOL(dwc_unregister_notifier);
++EXPORT_SYMBOL(dwc_add_observer);
++EXPORT_SYMBOL(dwc_remove_observer);
++EXPORT_SYMBOL(dwc_notify);
++#endif
++
++/* Memory Debugging Routines */
++#ifdef DWC_DEBUG_MEMORY
++EXPORT_SYMBOL(dwc_alloc_debug);
++EXPORT_SYMBOL(dwc_alloc_atomic_debug);
++EXPORT_SYMBOL(dwc_free_debug);
++EXPORT_SYMBOL(dwc_dma_alloc_debug);
++EXPORT_SYMBOL(dwc_dma_free_debug);
++#endif
++
++EXPORT_SYMBOL(DWC_MEMSET);
++EXPORT_SYMBOL(DWC_MEMCPY);
++EXPORT_SYMBOL(DWC_MEMMOVE);
++EXPORT_SYMBOL(DWC_MEMCMP);
++EXPORT_SYMBOL(DWC_STRNCMP);
++EXPORT_SYMBOL(DWC_STRCMP);
++EXPORT_SYMBOL(DWC_STRLEN);
++EXPORT_SYMBOL(DWC_STRCPY);
++EXPORT_SYMBOL(DWC_STRDUP);
++EXPORT_SYMBOL(DWC_ATOI);
++EXPORT_SYMBOL(DWC_ATOUI);
++
++#ifdef DWC_UTFLIB
++EXPORT_SYMBOL(DWC_UTF8_TO_UTF16LE);
++#endif	/* DWC_UTFLIB */
++
++EXPORT_SYMBOL(DWC_IN_IRQ);
++EXPORT_SYMBOL(DWC_IN_BH);
++EXPORT_SYMBOL(DWC_VPRINTF);
++EXPORT_SYMBOL(DWC_VSNPRINTF);
++EXPORT_SYMBOL(DWC_PRINTF);
++EXPORT_SYMBOL(DWC_SPRINTF);
++EXPORT_SYMBOL(DWC_SNPRINTF);
++EXPORT_SYMBOL(__DWC_WARN);
++EXPORT_SYMBOL(__DWC_ERROR);
++EXPORT_SYMBOL(DWC_EXCEPTION);
++
++#ifdef DEBUG
++EXPORT_SYMBOL(__DWC_DEBUG);
++#endif
++
++EXPORT_SYMBOL(__DWC_DMA_ALLOC);
++EXPORT_SYMBOL(__DWC_DMA_ALLOC_ATOMIC);
++EXPORT_SYMBOL(__DWC_DMA_FREE);
++EXPORT_SYMBOL(__DWC_ALLOC);
++EXPORT_SYMBOL(__DWC_ALLOC_ATOMIC);
++EXPORT_SYMBOL(__DWC_FREE);
++
++#ifdef DWC_CRYPTOLIB
++EXPORT_SYMBOL(DWC_RANDOM_BYTES);
++EXPORT_SYMBOL(DWC_AES_CBC);
++EXPORT_SYMBOL(DWC_SHA256);
++EXPORT_SYMBOL(DWC_HMAC_SHA256);
++#endif
++
++EXPORT_SYMBOL(DWC_CPU_TO_LE32);
++EXPORT_SYMBOL(DWC_CPU_TO_BE32);
++EXPORT_SYMBOL(DWC_LE32_TO_CPU);
++EXPORT_SYMBOL(DWC_BE32_TO_CPU);
++EXPORT_SYMBOL(DWC_CPU_TO_LE16);
++EXPORT_SYMBOL(DWC_CPU_TO_BE16);
++EXPORT_SYMBOL(DWC_LE16_TO_CPU);
++EXPORT_SYMBOL(DWC_BE16_TO_CPU);
++EXPORT_SYMBOL(DWC_READ_REG32);
++EXPORT_SYMBOL(DWC_WRITE_REG32);
++EXPORT_SYMBOL(DWC_MODIFY_REG32);
++
++#if 0
++EXPORT_SYMBOL(DWC_READ_REG64);
++EXPORT_SYMBOL(DWC_WRITE_REG64);
++EXPORT_SYMBOL(DWC_MODIFY_REG64);
++#endif
++
++EXPORT_SYMBOL(DWC_SPINLOCK_ALLOC);
++EXPORT_SYMBOL(DWC_SPINLOCK_FREE);
++EXPORT_SYMBOL(DWC_SPINLOCK);
++EXPORT_SYMBOL(DWC_SPINUNLOCK);
++EXPORT_SYMBOL(DWC_SPINLOCK_IRQSAVE);
++EXPORT_SYMBOL(DWC_SPINUNLOCK_IRQRESTORE);
++EXPORT_SYMBOL(DWC_MUTEX_ALLOC);
++
++#if (!defined(DWC_LINUX) || !defined(CONFIG_DEBUG_MUTEXES))
++EXPORT_SYMBOL(DWC_MUTEX_FREE);
++#endif
++
++EXPORT_SYMBOL(DWC_MUTEX_LOCK);
++EXPORT_SYMBOL(DWC_MUTEX_TRYLOCK);
++EXPORT_SYMBOL(DWC_MUTEX_UNLOCK);
++EXPORT_SYMBOL(DWC_UDELAY);
++EXPORT_SYMBOL(DWC_MDELAY);
++EXPORT_SYMBOL(DWC_MSLEEP);
++EXPORT_SYMBOL(DWC_TIME);
++EXPORT_SYMBOL(DWC_TIMER_ALLOC);
++EXPORT_SYMBOL(DWC_TIMER_FREE);
++EXPORT_SYMBOL(DWC_TIMER_SCHEDULE);
++EXPORT_SYMBOL(DWC_TIMER_CANCEL);
++EXPORT_SYMBOL(DWC_WAITQ_ALLOC);
++EXPORT_SYMBOL(DWC_WAITQ_FREE);
++EXPORT_SYMBOL(DWC_WAITQ_WAIT);
++EXPORT_SYMBOL(DWC_WAITQ_WAIT_TIMEOUT);
++EXPORT_SYMBOL(DWC_WAITQ_TRIGGER);
++EXPORT_SYMBOL(DWC_WAITQ_ABORT);
++EXPORT_SYMBOL(DWC_THREAD_RUN);
++EXPORT_SYMBOL(DWC_THREAD_STOP);
++EXPORT_SYMBOL(DWC_THREAD_SHOULD_STOP);
++EXPORT_SYMBOL(DWC_TASK_ALLOC);
++EXPORT_SYMBOL(DWC_TASK_FREE);
++EXPORT_SYMBOL(DWC_TASK_SCHEDULE);
++EXPORT_SYMBOL(DWC_WORKQ_WAIT_WORK_DONE);
++EXPORT_SYMBOL(DWC_WORKQ_ALLOC);
++EXPORT_SYMBOL(DWC_WORKQ_FREE);
++EXPORT_SYMBOL(DWC_WORKQ_SCHEDULE);
++EXPORT_SYMBOL(DWC_WORKQ_SCHEDULE_DELAYED);
++EXPORT_SYMBOL(DWC_WORKQ_PENDING);
++
++static int dwc_common_port_init_module(void)
++{
++	int result = 0;
++
++	printk(KERN_DEBUG "Module dwc_common_port init\n" );
++
++#ifdef DWC_DEBUG_MEMORY
++	result = dwc_memory_debug_start(NULL);
++	if (result) {
++		printk(KERN_ERR
++		       "dwc_memory_debug_start() failed with error %d\n",
++		       result);
++		return result;
++	}
++#endif
++
++#ifdef DWC_NOTIFYLIB
++	result = dwc_alloc_notification_manager(NULL, NULL);
++	if (result) {
++		printk(KERN_ERR
++		       "dwc_alloc_notification_manager() failed with error %d\n",
++		       result);
++		return result;
++	}
++#endif
++	return result;
++}
++
++static void dwc_common_port_exit_module(void)
++{
++	printk(KERN_DEBUG "Module dwc_common_port exit\n" );
++
++#ifdef DWC_NOTIFYLIB
++	dwc_free_notification_manager();
++#endif
++
++#ifdef DWC_DEBUG_MEMORY
++	dwc_memory_debug_stop();
++#endif
++}
++
++module_init(dwc_common_port_init_module);
++module_exit(dwc_common_port_exit_module);
++
++MODULE_DESCRIPTION("DWC Common Library - Portable version");
++MODULE_AUTHOR("Synopsys Inc.");
++MODULE_LICENSE ("GPL");
++
++#endif	/* DWC_LIBMODULE */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_common_nbsd.c
+@@ -0,0 +1,1275 @@
++#include "dwc_os.h"
++#include "dwc_list.h"
++
++#ifdef DWC_CCLIB
++# include "dwc_cc.h"
++#endif
++
++#ifdef DWC_CRYPTOLIB
++# include "dwc_modpow.h"
++# include "dwc_dh.h"
++# include "dwc_crypto.h"
++#endif
++
++#ifdef DWC_NOTIFYLIB
++# include "dwc_notifier.h"
++#endif
++
++/* OS-Level Implementations */
++
++/* This is the NetBSD 4.0.1 kernel implementation of the DWC platform library. */
++
++
++/* MISC */
++
++void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size)
++{
++	return memset(dest, byte, size);
++}
++
++void *DWC_MEMCPY(void *dest, void const *src, uint32_t size)
++{
++	return memcpy(dest, src, size);
++}
++
++void *DWC_MEMMOVE(void *dest, void *src, uint32_t size)
++{
++	bcopy(src, dest, size);
++	return dest;
++}
++
++int DWC_MEMCMP(void *m1, void *m2, uint32_t size)
++{
++	return memcmp(m1, m2, size);
++}
++
++int DWC_STRNCMP(void *s1, void *s2, uint32_t size)
++{
++	return strncmp(s1, s2, size);
++}
++
++int DWC_STRCMP(void *s1, void *s2)
++{
++	return strcmp(s1, s2);
++}
++
++int DWC_STRLEN(char const *str)
++{
++	return strlen(str);
++}
++
++char *DWC_STRCPY(char *to, char const *from)
++{
++	return strcpy(to, from);
++}
++
++char *DWC_STRDUP(char const *str)
++{
++	int len = DWC_STRLEN(str) + 1;
++	char *new = DWC_ALLOC_ATOMIC(len);
++
++	if (!new) {
++		return NULL;
++	}
++
++	DWC_MEMCPY(new, str, len);
++	return new;
++}
++
++int DWC_ATOI(char *str, int32_t *value)
++{
++	char *end = NULL;
++
++	/* NetBSD doesn't have 'strtol' in the kernel, but 'strtoul'
++	 * should be equivalent on 2's complement machines
++	 */
++	*value = strtoul(str, &end, 0);
++	if (*end == '\0') {
++		return 0;
++	}
++
++	return -1;
++}
++
++int DWC_ATOUI(char *str, uint32_t *value)
++{
++	char *end = NULL;
++
++	*value = strtoul(str, &end, 0);
++	if (*end == '\0') {
++		return 0;
++	}
++
++	return -1;
++}
++
++
++#ifdef DWC_UTFLIB
++/* From usbstring.c */
++
++int DWC_UTF8_TO_UTF16LE(uint8_t const *s, uint16_t *cp, unsigned len)
++{
++	int	count = 0;
++	u8	c;
++	u16	uchar;
++
++	/* this insists on correct encodings, though not minimal ones.
++	 * BUT it currently rejects legit 4-byte UTF-8 code points,
++	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
++	 */
++	while (len != 0 && (c = (u8) *s++) != 0) {
++		if (unlikely(c & 0x80)) {
++			// 2-byte sequence:
++			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
++			if ((c & 0xe0) == 0xc0) {
++				uchar = (c & 0x1f) << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++			// 3-byte sequence (most CJKV characters):
++			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
++			} else if ((c & 0xf0) == 0xe0) {
++				uchar = (c & 0x0f) << 12;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++				/* no bogus surrogates */
++				if (0xd800 <= uchar && uchar <= 0xdfff)
++					goto fail;
++
++			// 4-byte sequence (surrogate pairs, currently rare):
++			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
++			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
++			// (uuuuu = wwww + 1)
++			// FIXME accept the surrogate code points (only)
++			} else
++				goto fail;
++		} else
++			uchar = c;
++		put_unaligned (cpu_to_le16 (uchar), cp++);
++		count++;
++		len--;
++	}
++	return count;
++fail:
++	return -1;
++}
++
++#endif	/* DWC_UTFLIB */
++
++
++/* dwc_debug.h */
++
++dwc_bool_t DWC_IN_IRQ(void)
++{
++//	return in_irq();
++	return 0;
++}
++
++dwc_bool_t DWC_IN_BH(void)
++{
++//	return in_softirq();
++	return 0;
++}
++
++void DWC_VPRINTF(char *format, va_list args)
++{
++	vprintf(format, args);
++}
++
++int DWC_VSNPRINTF(char *str, int size, char *format, va_list args)
++{
++	return vsnprintf(str, size, format, args);
++}
++
++void DWC_PRINTF(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++int DWC_SPRINTF(char *buffer, char *format, ...)
++{
++	int retval;
++	va_list args;
++
++	va_start(args, format);
++	retval = vsprintf(buffer, format, args);
++	va_end(args);
++	return retval;
++}
++
++int DWC_SNPRINTF(char *buffer, int size, char *format, ...)
++{
++	int retval;
++	va_list args;
++
++	va_start(args, format);
++	retval = vsnprintf(buffer, size, format, args);
++	va_end(args);
++	return retval;
++}
++
++void __DWC_WARN(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++void __DWC_ERROR(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++
++void DWC_EXCEPTION(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++//	BUG_ON(1);	???
++}
++
++#ifdef DEBUG
++void __DWC_DEBUG(char *format, ...)
++{
++	va_list args;
++
++	va_start(args, format);
++	DWC_VPRINTF(format, args);
++	va_end(args);
++}
++#endif
++
++
++/* dwc_mem.h */
++
++#if 0
++dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size,
++				uint32_t align,
++				uint32_t alloc)
++{
++	struct dma_pool *pool = dma_pool_create("Pool", NULL,
++						size, align, alloc);
++	return (dwc_pool_t *)pool;
++}
++
++void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool)
++{
++	dma_pool_destroy((struct dma_pool *)pool);
++}
++
++void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
++{
++//	return dma_pool_alloc((struct dma_pool *)pool, GFP_KERNEL, dma_addr);
++	return dma_pool_alloc((struct dma_pool *)pool, M_WAITOK, dma_addr);
++}
++
++void *DWC_DMA_POOL_ZALLOC(dwc_pool_t *pool, uint64_t *dma_addr)
++{
++	void *vaddr = DWC_DMA_POOL_ALLOC(pool, dma_addr);
++	memset(..);
++}
++
++void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr)
++{
++	dma_pool_free(pool, vaddr, daddr);
++}
++#endif
++
++void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr)
++{
++	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
++	int error;
++
++	error = bus_dmamem_alloc(dma->dma_tag, size, 1, size, dma->segs,
++				 sizeof(dma->segs) / sizeof(dma->segs[0]),
++				 &dma->nsegs, BUS_DMA_NOWAIT);
++	if (error) {
++		printf("%s: bus_dmamem_alloc(%ju) failed: %d\n", __func__,
++		       (uintmax_t)size, error);
++		goto fail_0;
++	}
++
++	error = bus_dmamem_map(dma->dma_tag, dma->segs, dma->nsegs, size,
++			       (caddr_t *)&dma->dma_vaddr,
++			       BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
++	if (error) {
++		printf("%s: bus_dmamem_map failed: %d\n", __func__, error);
++		goto fail_1;
++	}
++
++	error = bus_dmamap_create(dma->dma_tag, size, 1, size, 0,
++				  BUS_DMA_NOWAIT, &dma->dma_map);
++	if (error) {
++		printf("%s: bus_dmamap_create failed: %d\n", __func__, error);
++		goto fail_2;
++	}
++
++	error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr,
++				size, NULL, BUS_DMA_NOWAIT);
++	if (error) {
++		printf("%s: bus_dmamap_load failed: %d\n", __func__, error);
++		goto fail_3;
++	}
++
++	dma->dma_paddr = (bus_addr_t)dma->segs[0].ds_addr;
++	*dma_addr = dma->dma_paddr;
++	return dma->dma_vaddr;
++
++fail_3:
++	bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
++fail_2:
++	bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, size);
++fail_1:
++	bus_dmamem_free(dma->dma_tag, dma->segs, dma->nsegs);
++fail_0:
++	dma->dma_map = NULL;
++	dma->dma_vaddr = NULL;
++	dma->nsegs = 0;
++
++	return NULL;
++}
++
++void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr)
++{
++	dwc_dmactx_t *dma = (dwc_dmactx_t *)dma_ctx;
++
++	if (dma->dma_map != NULL) {
++		bus_dmamap_sync(dma->dma_tag, dma->dma_map, 0, size,
++				BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
++		bus_dmamap_unload(dma->dma_tag, dma->dma_map);
++		bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
++		bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, size);
++		bus_dmamem_free(dma->dma_tag, dma->segs, dma->nsegs);
++		dma->dma_paddr = 0;
++		dma->dma_map = NULL;
++		dma->dma_vaddr = NULL;
++		dma->nsegs = 0;
++	}
++}
++
++void *__DWC_ALLOC(void *mem_ctx, uint32_t size)
++{
++	return malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
++}
++
++void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size)
++{
++	return malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
++}
++
++void __DWC_FREE(void *mem_ctx, void *addr)
++{
++	free(addr, M_DEVBUF);
++}
++
++
++#ifdef DWC_CRYPTOLIB
++/* dwc_crypto.h */
++
++void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length)
++{
++	get_random_bytes(buffer, length);
++}
++
++int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out)
++{
++	struct crypto_blkcipher *tfm;
++	struct blkcipher_desc desc;
++	struct scatterlist sgd;
++	struct scatterlist sgs;
++
++	tfm = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
++	if (tfm == NULL) {
++		printk("failed to load transform for aes CBC\n");
++		return -1;
++	}
++
++	crypto_blkcipher_setkey(tfm, key, keylen);
++	crypto_blkcipher_set_iv(tfm, iv, 16);
++
++	sg_init_one(&sgd, out, messagelen);
++	sg_init_one(&sgs, message, messagelen);
++
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	if (crypto_blkcipher_encrypt(&desc, &sgd, &sgs, messagelen)) {
++		crypto_free_blkcipher(tfm);
++		DWC_ERROR("AES CBC encryption failed");
++		return -1;
++	}
++
++	crypto_free_blkcipher(tfm);
++	return 0;
++}
++
++int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out)
++{
++	struct crypto_hash *tfm;
++	struct hash_desc desc;
++	struct scatterlist sg;
++
++	tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
++	if (IS_ERR(tfm)) {
++		DWC_ERROR("Failed to load transform for sha256: %ld", PTR_ERR(tfm));
++		return 0;
++	}
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	sg_init_one(&sg, message, len);
++	crypto_hash_digest(&desc, &sg, len, out);
++	crypto_free_hash(tfm);
++
++	return 1;
++}
++
++int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen,
++		    uint8_t *key, uint32_t keylen, uint8_t *out)
++{
++	struct crypto_hash *tfm;
++	struct hash_desc desc;
++	struct scatterlist sg;
++
++	tfm = crypto_alloc_hash("hmac(sha256)", 0, CRYPTO_ALG_ASYNC);
++	if (IS_ERR(tfm)) {
++		DWC_ERROR("Failed to load transform for hmac(sha256): %ld", PTR_ERR(tfm));
++		return 0;
++	}
++	desc.tfm = tfm;
++	desc.flags = 0;
++
++	sg_init_one(&sg, message, messagelen);
++	crypto_hash_setkey(tfm, key, keylen);
++	crypto_hash_digest(&desc, &sg, messagelen, out);
++	crypto_free_hash(tfm);
++
++	return 1;
++}
++
++#endif	/* DWC_CRYPTOLIB */
++
++
++/* Byte Ordering Conversions */
++
++uint32_t DWC_CPU_TO_LE32(uint32_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_CPU_TO_BE32(uint32_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_LE32_TO_CPU(uint32_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint32_t DWC_BE32_TO_CPU(uint32_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++
++	return (u_p[3] | (u_p[2] << 8) | (u_p[1] << 16) | (u_p[0] << 24));
++#endif
++}
++
++uint16_t DWC_CPU_TO_LE16(uint16_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_CPU_TO_BE16(uint16_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_LE16_TO_CPU(uint16_t *p)
++{
++#ifdef __LITTLE_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++uint16_t DWC_BE16_TO_CPU(uint16_t *p)
++{
++#ifdef __BIG_ENDIAN
++	return *p;
++#else
++	uint8_t *u_p = (uint8_t *)p;
++	return (u_p[1] | (u_p[0] << 8));
++#endif
++}
++
++
++/* Registers */
++
++uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	return bus_space_read_4(io->iot, io->ioh, ior);
++}
++
++#if 0
++uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	return bus_space_read_8(io->iot, io->ioh, ior);
++}
++#endif
++
++void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_4(io->iot, io->ioh, ior, value);
++}
++
++#if 0
++void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_8(io->iot, io->ioh, ior, value);
++}
++#endif
++
++void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask,
++		      uint32_t set_mask)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_4(io->iot, io->ioh, ior,
++			  (bus_space_read_4(io->iot, io->ioh, ior) &
++			   ~clear_mask) | set_mask);
++}
++
++#if 0
++void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask,
++		      uint64_t set_mask)
++{
++	dwc_ioctx_t *io = (dwc_ioctx_t *)io_ctx;
++	bus_size_t ior = (bus_size_t)reg;
++
++	bus_space_write_8(io->iot, io->ioh, ior,
++			  (bus_space_read_8(io->iot, io->ioh, ior) &
++			   ~clear_mask) | set_mask);
++}
++#endif
++
++
++/* Locking */
++
++dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void)
++{
++	struct simplelock *sl = DWC_ALLOC(sizeof(*sl));
++
++	if (!sl) {
++		DWC_ERROR("Cannot allocate memory for spinlock");
++		return NULL;
++	}
++
++	simple_lock_init(sl);
++	return (dwc_spinlock_t *)sl;
++}
++
++void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock)
++{
++	struct simplelock *sl = (struct simplelock *)lock;
++
++	DWC_FREE(sl);
++}
++
++void DWC_SPINLOCK(dwc_spinlock_t *lock)
++{
++	simple_lock((struct simplelock *)lock);
++}
++
++void DWC_SPINUNLOCK(dwc_spinlock_t *lock)
++{
++	simple_unlock((struct simplelock *)lock);
++}
++
++void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags)
++{
++	simple_lock((struct simplelock *)lock);
++	*flags = splbio();
++}
++
++void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags)
++{
++	splx(flags);
++	simple_unlock((struct simplelock *)lock);
++}
++
++dwc_mutex_t *DWC_MUTEX_ALLOC(void)
++{
++	dwc_mutex_t *mutex = DWC_ALLOC(sizeof(struct lock));
++
++	if (!mutex) {
++		DWC_ERROR("Cannot allocate memory for mutex");
++		return NULL;
++	}
++
++	lockinit((struct lock *)mutex, 0, "dw3mtx", 0, 0);
++	return mutex;
++}
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES))
++#else
++void DWC_MUTEX_FREE(dwc_mutex_t *mutex)
++{
++	DWC_FREE(mutex);
++}
++#endif
++
++void DWC_MUTEX_LOCK(dwc_mutex_t *mutex)
++{
++	lockmgr((struct lock *)mutex, LK_EXCLUSIVE, NULL);
++}
++
++int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex)
++{
++	int status;
++
++	status = lockmgr((struct lock *)mutex, LK_EXCLUSIVE | LK_NOWAIT, NULL);
++	return status == 0;
++}
++
++void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex)
++{
++	lockmgr((struct lock *)mutex, LK_RELEASE, NULL);
++}
++
++
++/* Timing */
++
++void DWC_UDELAY(uint32_t usecs)
++{
++	DELAY(usecs);
++}
++
++void DWC_MDELAY(uint32_t msecs)
++{
++	do {
++		DELAY(1000);
++	} while (--msecs);
++}
++
++void DWC_MSLEEP(uint32_t msecs)
++{
++	struct timeval tv;
++
++	tv.tv_sec = msecs / 1000;
++	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
++	tsleep(&tv, 0, "dw3slp", tvtohz(&tv));
++}
++
++uint32_t DWC_TIME(void)
++{
++	struct timeval tv;
++
++	microuptime(&tv);	// or getmicrouptime? (less precise, but faster)
++	return tv.tv_sec * 1000 + tv.tv_usec / 1000;
++}
++
++
++/* Timers */
++
++struct dwc_timer {
++	struct callout t;
++	char *name;
++	dwc_spinlock_t *lock;
++	dwc_timer_callback_t cb;
++	void *data;
++};
++
++dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data)
++{
++	dwc_timer_t *t = DWC_ALLOC(sizeof(*t));
++
++	if (!t) {
++		DWC_ERROR("Cannot allocate memory for timer");
++		return NULL;
++	}
++
++	callout_init(&t->t);
++
++	t->name = DWC_STRDUP(name);
++	if (!t->name) {
++		DWC_ERROR("Cannot allocate memory for timer->name");
++		goto no_name;
++	}
++
++	t->lock = DWC_SPINLOCK_ALLOC();
++	if (!t->lock) {
++		DWC_ERROR("Cannot allocate memory for timer->lock");
++		goto no_lock;
++	}
++
++	t->cb = cb;
++	t->data = data;
++
++	return t;
++
++ no_lock:
++	DWC_FREE(t->name);
++ no_name:
++	DWC_FREE(t);
++
++	return NULL;
++}
++
++void DWC_TIMER_FREE(dwc_timer_t *timer)
++{
++	callout_stop(&timer->t);
++	DWC_SPINLOCK_FREE(timer->lock);
++	DWC_FREE(timer->name);
++	DWC_FREE(timer);
++}
++
++void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time)
++{
++	struct timeval tv;
++
++	tv.tv_sec = time / 1000;
++	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
++	callout_reset(&timer->t, tvtohz(&tv), timer->cb, timer->data);
++}
++
++void DWC_TIMER_CANCEL(dwc_timer_t *timer)
++{
++	callout_stop(&timer->t);
++}
++
++
++/* Wait Queues */
++
++struct dwc_waitq {
++	struct simplelock lock;
++	int abort;
++};
++
++dwc_waitq_t *DWC_WAITQ_ALLOC(void)
++{
++	dwc_waitq_t *wq = DWC_ALLOC(sizeof(*wq));
++
++	if (!wq) {
++		DWC_ERROR("Cannot allocate memory for waitqueue");
++		return NULL;
++	}
++
++	simple_lock_init(&wq->lock);
++	wq->abort = 0;
++
++	return wq;
++}
++
++void DWC_WAITQ_FREE(dwc_waitq_t *wq)
++{
++	DWC_FREE(wq);
++}
++
++int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data)
++{
++	int ipl;
++	int result = 0;
++
++	simple_lock(&wq->lock);
++	ipl = splbio();
++
++	/* Skip the sleep if already aborted or triggered */
++	if (!wq->abort && !cond(data)) {
++		splx(ipl);
++		result = ltsleep(wq, PCATCH, "dw3wat", 0, &wq->lock); // infinite timeout
++		ipl = splbio();
++	}
++
++	if (result == 0) {			// awoken
++		if (wq->abort) {
++			wq->abort = 0;
++			result = -DWC_E_ABORT;
++		} else {
++			result = 0;
++		}
++
++		splx(ipl);
++		simple_unlock(&wq->lock);
++	} else {
++		wq->abort = 0;
++		splx(ipl);
++		simple_unlock(&wq->lock);
++
++		if (result == ERESTART) {	// signaled - restart
++			result = -DWC_E_RESTART;
++		} else {			// signaled - must be EINTR
++			result = -DWC_E_ABORT;
++		}
++	}
++
++	return result;
++}
++
++int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
++			       void *data, int32_t msecs)
++{
++	struct timeval tv, tv1, tv2;
++	int ipl;
++	int result = 0;
++
++	tv.tv_sec = msecs / 1000;
++	tv.tv_usec = (msecs - tv.tv_sec * 1000) * 1000;
++
++	simple_lock(&wq->lock);
++	ipl = splbio();
++
++	/* Skip the sleep if already aborted or triggered */
++	if (!wq->abort && !cond(data)) {
++		splx(ipl);
++		getmicrouptime(&tv1);
++		result = ltsleep(wq, PCATCH, "dw3wto", tvtohz(&tv), &wq->lock);
++		getmicrouptime(&tv2);
++		ipl = splbio();
++	}
++
++	if (result == 0) {			// awoken
++		if (wq->abort) {
++			wq->abort = 0;
++			splx(ipl);
++			simple_unlock(&wq->lock);
++			result = -DWC_E_ABORT;
++		} else {
++			splx(ipl);
++			simple_unlock(&wq->lock);
++
++			tv2.tv_usec -= tv1.tv_usec;
++			if (tv2.tv_usec < 0) {
++				tv2.tv_usec += 1000000;
++				tv2.tv_sec--;
++			}
++
++			tv2.tv_sec -= tv1.tv_sec;
++			result = tv2.tv_sec * 1000 + tv2.tv_usec / 1000;
++			result = msecs - result;
++			if (result <= 0)
++				result = 1;
++		}
++	} else {
++		wq->abort = 0;
++		splx(ipl);
++		simple_unlock(&wq->lock);
++
++		if (result == ERESTART) {	// signaled - restart
++			result = -DWC_E_RESTART;
++
++		} else if (result == EINTR) {		// signaled - interrupt
++			result = -DWC_E_ABORT;
++
++		} else {				// timed out
++			result = -DWC_E_TIMEOUT;
++		}
++	}
++
++	return result;
++}
++
++void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq)
++{
++	wakeup(wq);
++}
++
++void DWC_WAITQ_ABORT(dwc_waitq_t *wq)
++{
++	int ipl;
++
++	simple_lock(&wq->lock);
++	ipl = splbio();
++	wq->abort = 1;
++	wakeup(wq);
++	splx(ipl);
++	simple_unlock(&wq->lock);
++}
++
++
++/* Threading */
++
++struct dwc_thread {
++	struct proc *proc;
++	int abort;
++};
++
++dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data)
++{
++	int retval;
++	dwc_thread_t *thread = DWC_ALLOC(sizeof(*thread));
++
++	if (!thread) {
++		return NULL;
++	}
++
++	thread->abort = 0;
++	retval = kthread_create1((void (*)(void *))func, data, &thread->proc,
++				 "%s", name);
++	if (retval) {
++		DWC_FREE(thread);
++		return NULL;
++	}
++
++	return thread;
++}
++
++int DWC_THREAD_STOP(dwc_thread_t *thread)
++{
++	int retval;
++
++	thread->abort = 1;
++	retval = tsleep(&thread->abort, 0, "dw3stp", 60 * hz);
++
++	if (retval == 0) {
++		/* DWC_THREAD_EXIT() will free the thread struct */
++		return 0;
++	}
++
++	/* NOTE: We leak the thread struct if thread doesn't die */
++
++	if (retval == EWOULDBLOCK) {
++		return -DWC_E_TIMEOUT;
++	}
++
++	return -DWC_E_UNKNOWN;
++}
++
++dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread)
++{
++	return thread->abort;
++}
++
++void DWC_THREAD_EXIT(dwc_thread_t *thread)
++{
++	wakeup(&thread->abort);
++	DWC_FREE(thread);
++	kthread_exit(0);
++}
++
++/* tasklets
++ - Runs in interrupt context (cannot sleep)
++ - Each tasklet runs on a single CPU
++ - Different tasklets can be running simultaneously on different CPUs
++ [ On NetBSD there is no corresponding mechanism, drivers don't have bottom-
++   halves. So we just call the callback directly from DWC_TASK_SCHEDULE() ]
++ */
++struct dwc_tasklet {
++	dwc_tasklet_callback_t cb;
++	void *data;
++};
++
++static void tasklet_callback(void *data)
++{
++	dwc_tasklet_t *task = (dwc_tasklet_t *)data;
++
++	task->cb(task->data);
++}
++
++dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data)
++{
++	dwc_tasklet_t *task = DWC_ALLOC(sizeof(*task));
++
++	if (task) {
++		task->cb = cb;
++		task->data = data;
++	} else {
++		DWC_ERROR("Cannot allocate memory for tasklet");
++	}
++
++	return task;
++}
++
++void DWC_TASK_FREE(dwc_tasklet_t *task)
++{
++	DWC_FREE(task);
++}
++
++void DWC_TASK_SCHEDULE(dwc_tasklet_t *task)
++{
++	tasklet_callback(task);
++}
++
++
++/* workqueues
++ - Runs in process context (can sleep)
++ */
++typedef struct work_container {
++	dwc_work_callback_t cb;
++	void *data;
++	dwc_workq_t *wq;
++	char *name;
++	int hz;
++	struct work task;
++} work_container_t;
++
++struct dwc_workq {
++	struct workqueue *taskq;
++	dwc_spinlock_t *lock;
++	dwc_waitq_t *waitq;
++	int pending;
++	struct work_container *container;
++};
++
++static void do_work(struct work *task, void *data)
++{
++	dwc_workq_t *wq = (dwc_workq_t *)data;
++	work_container_t *container = wq->container;
++	dwc_irqflags_t flags;
++
++	if (container->hz) {
++		tsleep(container, 0, "dw3wrk", container->hz);
++	}
++
++	container->cb(container->data);
++	DWC_DEBUG("Work done: %s, container=%p", container->name, container);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	if (container->name)
++		DWC_FREE(container->name);
++	DWC_FREE(container);
++	wq->pending--;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++}
++
++static int work_done(void *data)
++{
++	dwc_workq_t *workq = (dwc_workq_t *)data;
++
++	return workq->pending == 0;
++}
++
++int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout)
++{
++	return DWC_WAITQ_WAIT_TIMEOUT(workq->waitq, work_done, workq, timeout);
++}
++
++dwc_workq_t *DWC_WORKQ_ALLOC(char *name)
++{
++	int result;
++	dwc_workq_t *wq = DWC_ALLOC(sizeof(*wq));
++
++	if (!wq) {
++		DWC_ERROR("Cannot allocate memory for workqueue");
++		return NULL;
++	}
++
++	result = workqueue_create(&wq->taskq, name, do_work, wq, 0 /*PWAIT*/,
++				  IPL_BIO, 0);
++	if (result) {
++		DWC_ERROR("Cannot create workqueue");
++		goto no_taskq;
++	}
++
++	wq->pending = 0;
++
++	wq->lock = DWC_SPINLOCK_ALLOC();
++	if (!wq->lock) {
++		DWC_ERROR("Cannot allocate memory for spinlock");
++		goto no_lock;
++	}
++
++	wq->waitq = DWC_WAITQ_ALLOC();
++	if (!wq->waitq) {
++		DWC_ERROR("Cannot allocate memory for waitqueue");
++		goto no_waitq;
++	}
++
++	return wq;
++
++ no_waitq:
++	DWC_SPINLOCK_FREE(wq->lock);
++ no_lock:
++	workqueue_destroy(wq->taskq);
++ no_taskq:
++	DWC_FREE(wq);
++
++	return NULL;
++}
++
++void DWC_WORKQ_FREE(dwc_workq_t *wq)
++{
++#ifdef DEBUG
++	dwc_irqflags_t flags;
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++
++	if (wq->pending != 0) {
++		struct work_container *container = wq->container;
++
++		DWC_ERROR("Destroying work queue with pending work");
++
++		if (container && container->name) {
++			DWC_ERROR("Work %s still pending", container->name);
++		}
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++#endif
++	DWC_WAITQ_FREE(wq->waitq);
++	DWC_SPINLOCK_FREE(wq->lock);
++	workqueue_destroy(wq->taskq);
++	DWC_FREE(wq);
++}
++
++void DWC_WORKQ_SCHEDULE(dwc_workq_t *wq, dwc_work_callback_t cb, void *data,
++			char *format, ...)
++{
++	dwc_irqflags_t flags;
++	work_container_t *container;
++	static char name[128];
++	va_list args;
++
++	va_start(args, format);
++	DWC_VSNPRINTF(name, 128, format, args);
++	va_end(args);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	wq->pending++;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++
++	container = DWC_ALLOC_ATOMIC(sizeof(*container));
++	if (!container) {
++		DWC_ERROR("Cannot allocate memory for container");
++		return;
++	}
++
++	container->name = DWC_STRDUP(name);
++	if (!container->name) {
++		DWC_ERROR("Cannot allocate memory for container->name");
++		DWC_FREE(container);
++		return;
++	}
++
++	container->cb = cb;
++	container->data = data;
++	container->wq = wq;
++	container->hz = 0;
++	wq->container = container;
++
++	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
++	workqueue_enqueue(wq->taskq, &container->task);
++}
++
++void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *wq, dwc_work_callback_t cb,
++				void *data, uint32_t time, char *format, ...)
++{
++	dwc_irqflags_t flags;
++	work_container_t *container;
++	static char name[128];
++	struct timeval tv;
++	va_list args;
++
++	va_start(args, format);
++	DWC_VSNPRINTF(name, 128, format, args);
++	va_end(args);
++
++	DWC_SPINLOCK_IRQSAVE(wq->lock, &flags);
++	wq->pending++;
++	DWC_SPINUNLOCK_IRQRESTORE(wq->lock, flags);
++	DWC_WAITQ_TRIGGER(wq->waitq);
++
++	container = DWC_ALLOC_ATOMIC(sizeof(*container));
++	if (!container) {
++		DWC_ERROR("Cannot allocate memory for container");
++		return;
++	}
++
++	container->name = DWC_STRDUP(name);
++	if (!container->name) {
++		DWC_ERROR("Cannot allocate memory for container->name");
++		DWC_FREE(container);
++		return;
++	}
++
++	container->cb = cb;
++	container->data = data;
++	container->wq = wq;
++	tv.tv_sec = time / 1000;
++	tv.tv_usec = (time - tv.tv_sec * 1000) * 1000;
++	container->hz = tvtohz(&tv);
++	wq->container = container;
++
++	DWC_DEBUG("Queueing work: %s, container=%p", container->name, container);
++	workqueue_enqueue(wq->taskq, &container->task);
++}
++
++int DWC_WORKQ_PENDING(dwc_workq_t *wq)
++{
++	return wq->pending;
++}
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_crypto.c
+@@ -0,0 +1,308 @@
++/* =========================================================================
++ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_crypto.c $
++ * $Revision: #5 $
++ * $Date: 2010/09/28 $
++ * $Change: 1596182 $
++ *
++ * Synopsys Portability Library Software and documentation
++ * (hereinafter, "Software") is an Unsupported proprietary work of
++ * Synopsys, Inc. unless otherwise expressly agreed to in writing
++ * between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product
++ * under any End User Software License Agreement or Agreement for
++ * Licensed Product with Synopsys or any supplement thereto. You are
++ * permitted to use and redistribute this Software in source and binary
++ * forms, with or without modification, provided that redistributions
++ * of source code must retain this notice. You may not view, use,
++ * disclose, copy or distribute this file or any information contained
++ * herein except pursuant to this license grant from Synopsys. If you
++ * do not agree with this notice, including the disclaimer below, then
++ * you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
++ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
++ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
++ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================= */
++
++/** @file
++ * This file contains the WUSB cryptographic routines.
++ */
++
++#ifdef DWC_CRYPTOLIB
++
++#include "dwc_crypto.h"
++#include "usb.h"
++
++#ifdef DEBUG
++static inline void dump_bytes(char *name, uint8_t *bytes, int len)
++{
++	int i;
++	DWC_PRINTF("%s: ", name);
++	for (i=0; i<len; i++) {
++		DWC_PRINTF("%02x ", bytes[i]);
++	}
++	DWC_PRINTF("\n");
++}
++#else
++#define dump_bytes(x...)
++#endif
++
++/* Display a block */
++void show_block(const u8 *blk, const char *prefix, const char *suffix, int a)
++{
++#ifdef DWC_DEBUG_CRYPTO
++	int i, blksize = 16;
++
++	DWC_DEBUG("%s", prefix);
++
++	if (suffix == NULL) {
++		suffix = "\n";
++		blksize = a;
++	}
++
++	for (i = 0; i < blksize; i++)
++		DWC_PRINT("%02x%s", *blk++, ((i & 3) == 3) ? "  " : " ");
++	DWC_PRINT(suffix);
++#endif
++}
++
++/**
++ * Encrypts an array of bytes using the AES encryption engine.
++ * If <code>dst</code> == <code>src</code>, then the bytes will be encrypted
++ * in-place.
++ *
++ * @return  0 on success, negative error code on error.
++ */
++int dwc_wusb_aes_encrypt(u8 *src, u8 *key, u8 *dst)
++{
++	u8 block_t[16];
++	DWC_MEMSET(block_t, 0, 16);
++
++	return DWC_AES_CBC(src, 16, key, 16, block_t, dst);
++}
++
++/**
++ * The CCM-MAC-FUNCTION described in section 6.5 of the WUSB spec.
++ * This function takes a data string and returns the encrypted CBC
++ * Counter-mode MIC.
++ *
++ * @param key     The 128-bit symmetric key.
++ * @param nonce   The CCM nonce.
++ * @param label   The unique 14-byte ASCII text label.
++ * @param bytes   The byte array to be encrypted.
++ * @param len     Length of the byte array.
++ * @param result  Byte array to receive the 8-byte encrypted MIC.
++ */
++void dwc_wusb_cmf(u8 *key, u8 *nonce,
++		  char *label, u8 *bytes, int len, u8 *result)
++{
++	u8 block_m[16];
++	u8 block_x[16];
++	u8 block_t[8];
++	int idx, blkNum;
++	u16 la = (u16)(len + 14);
++
++	/* Set the AES-128 key */
++	//dwc_aes_setkey(tfm, key, 16);
++
++	/* Fill block B0 from flags = 0x59, N, and l(m) = 0 */
++	block_m[0] = 0x59;
++	for (idx = 0; idx < 13; idx++)
++		block_m[idx + 1] = nonce[idx];
++	block_m[14] = 0;
++	block_m[15] = 0;
++
++	/* Produce the CBC IV */
++	dwc_wusb_aes_encrypt(block_m, key, block_x);
++	show_block(block_m, "CBC IV in: ", "\n", 0);
++	show_block(block_x, "CBC IV out:", "\n", 0);
++
++	/* Fill block B1 from l(a) = Blen + 14, and A */
++	block_x[0] ^= (u8)(la >> 8);
++	block_x[1] ^= (u8)la;
++	for (idx = 0; idx < 14; idx++)
++		block_x[idx + 2] ^= label[idx];
++	show_block(block_x, "After xor: ", "b1\n", 16);
++
++	dwc_wusb_aes_encrypt(block_x, key, block_x);
++	show_block(block_x, "After AES: ", "b1\n", 16);
++
++	idx = 0;
++	blkNum = 0;
++
++	/* Fill remaining blocks with B */
++	while (len-- > 0) {
++		block_x[idx] ^= *bytes++;
++		if (++idx >= 16) {
++			idx = 0;
++			show_block(block_x, "After xor: ", "\n", blkNum);
++			dwc_wusb_aes_encrypt(block_x, key, block_x);
++			show_block(block_x, "After AES: ", "\n", blkNum);
++			blkNum++;
++		}
++	}
++
++	/* Handle partial last block */
++	if (idx > 0) {
++		show_block(block_x, "After xor: ", "\n", blkNum);
++		dwc_wusb_aes_encrypt(block_x, key, block_x);
++		show_block(block_x, "After AES: ", "\n", blkNum);
++	}
++
++	/* Save the MIC tag */
++	DWC_MEMCPY(block_t, block_x, 8);
++	show_block(block_t, "MIC tag  : ", NULL, 8);
++
++	/* Fill block A0 from flags = 0x01, N, and counter = 0 */
++	block_m[0] = 0x01;
++	block_m[14] = 0;
++	block_m[15] = 0;
++
++	/* Encrypt the counter */
++	dwc_wusb_aes_encrypt(block_m, key, block_x);
++	show_block(block_x, "CTR[MIC] : ", NULL, 8);
++
++	/* XOR with MIC tag */
++	for (idx = 0; idx < 8; idx++) {
++		block_t[idx] ^= block_x[idx];
++	}
++
++	/* Return result to caller */
++	DWC_MEMCPY(result, block_t, 8);
++	show_block(result, "CCM-MIC  : ", NULL, 8);
++
++}
++
++/**
++ * The PRF function described in section 6.5 of the WUSB spec. This function
++ * concatenates MIC values returned from dwc_cmf() to create a value of
++ * the requested length.
++ *
++ * @param prf_len  Length of the PRF function in bits (64, 128, or 256).
++ * @param key, nonce, label, bytes, len  Same as for dwc_cmf().
++ * @param result   Byte array to receive the result.
++ */
++void dwc_wusb_prf(int prf_len, u8 *key,
++		  u8 *nonce, char *label, u8 *bytes, int len, u8 *result)
++{
++	int i;
++
++	nonce[0] = 0;
++	for (i = 0; i < prf_len >> 6; i++, nonce[0]++) {
++		dwc_wusb_cmf(key, nonce, label, bytes, len, result);
++		result += 8;
++	}
++}
++
++/**
++ * Fills in CCM Nonce per the WUSB spec.
++ *
++ * @param[in] haddr Host address.
++ * @param[in] daddr Device address.
++ * @param[in] tkid Session Key(PTK) identifier.
++ * @param[out] nonce Pointer to where the CCM Nonce output is to be written.
++ */
++void dwc_wusb_fill_ccm_nonce(uint16_t haddr, uint16_t daddr, uint8_t *tkid,
++			     uint8_t *nonce)
++{
++
++	DWC_DEBUG("%s %x %x\n", __func__, daddr, haddr);
++
++	DWC_MEMSET(&nonce[0], 0, 16);
++
++	DWC_MEMCPY(&nonce[6], tkid, 3);
++	nonce[9] = daddr & 0xFF;
++	nonce[10] = (daddr >> 8) & 0xFF;
++	nonce[11] = haddr & 0xFF;
++	nonce[12] = (haddr >> 8) & 0xFF;
++
++	dump_bytes("CCM nonce", nonce, 16);
++}
++
++/**
++ * Generates a 16-byte cryptographic-grade random number for the Host/Device
++ * Nonce.
++ */
++void dwc_wusb_gen_nonce(uint16_t addr, uint8_t *nonce)
++{
++	uint8_t inonce[16];
++	uint32_t temp[4];
++
++	/* Fill in the Nonce */
++	DWC_MEMSET(&inonce[0], 0, sizeof(inonce));
++	inonce[9] = addr & 0xFF;
++	inonce[10] = (addr >> 8) & 0xFF;
++	inonce[11] = inonce[9];
++	inonce[12] = inonce[10];
++
++	/* Collect "randomness samples" */
++	DWC_RANDOM_BYTES((uint8_t *)temp, 16);
++
++	dwc_wusb_prf_128((uint8_t *)temp, nonce,
++			 "Random Numbers", (uint8_t *)temp, sizeof(temp),
++			 nonce);
++}
++
++/**
++ * Generates the Session Key (PTK) and Key Confirmation Key (KCK) per the
++ * WUSB spec.
++ *
++ * @param[in] ccm_nonce Pointer to CCM Nonce.
++ * @param[in] mk Master Key to derive the session from
++ * @param[in] hnonce Pointer to Host Nonce.
++ * @param[in] dnonce Pointer to Device Nonce.
++ * @param[out] kck Pointer to where the KCK output is to be written.
++ * @param[out] ptk Pointer to where the PTK output is to be written.
++ */
++void dwc_wusb_gen_key(uint8_t *ccm_nonce, uint8_t *mk, uint8_t *hnonce,
++		      uint8_t *dnonce, uint8_t *kck, uint8_t *ptk)
++{
++	uint8_t idata[32];
++	uint8_t odata[32];
++
++	dump_bytes("ck", mk, 16);
++	dump_bytes("hnonce", hnonce, 16);
++	dump_bytes("dnonce", dnonce, 16);
++
++	/* The data is the HNonce and DNonce concatenated */
++	DWC_MEMCPY(&idata[0], hnonce, 16);
++	DWC_MEMCPY(&idata[16], dnonce, 16);
++
++	dwc_wusb_prf_256(mk, ccm_nonce, "Pair-wise keys", idata, 32, odata);
++
++	/* Low 16 bytes of the result is the KCK, high 16 is the PTK */
++	DWC_MEMCPY(kck, &odata[0], 16);
++	DWC_MEMCPY(ptk, &odata[16], 16);
++
++	dump_bytes("kck", kck, 16);
++	dump_bytes("ptk", ptk, 16);
++}
++
++/**
++ * Generates the Message Integrity Code over the Handshake data per the
++ * WUSB spec.
++ *
++ * @param ccm_nonce Pointer to CCM Nonce.
++ * @param kck   Pointer to Key Confirmation Key.
++ * @param data  Pointer to Handshake data to be checked.
++ * @param mic   Pointer to where the MIC output is to be written.
++ */
++void dwc_wusb_gen_mic(uint8_t *ccm_nonce, uint8_t *kck,
++		      uint8_t *data, uint8_t *mic)
++{
++
++	dwc_wusb_prf_64(kck, ccm_nonce, "out-of-bandMIC",
++			data, WUSB_HANDSHAKE_LEN_FOR_MIC, mic);
++}
++
++#endif	/* DWC_CRYPTOLIB */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_crypto.h
+@@ -0,0 +1,111 @@
++/* =========================================================================
++ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_crypto.h $
++ * $Revision: #3 $
++ * $Date: 2010/09/28 $
++ * $Change: 1596182 $
++ *
++ * Synopsys Portability Library Software and documentation
++ * (hereinafter, "Software") is an Unsupported proprietary work of
++ * Synopsys, Inc. unless otherwise expressly agreed to in writing
++ * between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product
++ * under any End User Software License Agreement or Agreement for
++ * Licensed Product with Synopsys or any supplement thereto. You are
++ * permitted to use and redistribute this Software in source and binary
++ * forms, with or without modification, provided that redistributions
++ * of source code must retain this notice. You may not view, use,
++ * disclose, copy or distribute this file or any information contained
++ * herein except pursuant to this license grant from Synopsys. If you
++ * do not agree with this notice, including the disclaimer below, then
++ * you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
++ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
++ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
++ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================= */
++
++#ifndef _DWC_CRYPTO_H_
++#define _DWC_CRYPTO_H_
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/** @file
++ *
++ * This file contains declarations for the WUSB Cryptographic routines as
++ * defined in the WUSB spec.  They are only to be used internally by the DWC UWB
++ * modules.
++ */
++
++#include "dwc_os.h"
++
++int dwc_wusb_aes_encrypt(u8 *src, u8 *key, u8 *dst);
++
++void dwc_wusb_cmf(u8 *key, u8 *nonce,
++		  char *label, u8 *bytes, int len, u8 *result);
++void dwc_wusb_prf(int prf_len, u8 *key,
++		  u8 *nonce, char *label, u8 *bytes, int len, u8 *result);
++
++/**
++ * The PRF-64 function described in section 6.5 of the WUSB spec.
++ *
++ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
++ */
++static inline void dwc_wusb_prf_64(u8 *key, u8 *nonce,
++				   char *label, u8 *bytes, int len, u8 *result)
++{
++	dwc_wusb_prf(64, key, nonce, label, bytes, len, result);
++}
++
++/**
++ * The PRF-128 function described in section 6.5 of the WUSB spec.
++ *
++ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
++ */
++static inline void dwc_wusb_prf_128(u8 *key, u8 *nonce,
++				    char *label, u8 *bytes, int len, u8 *result)
++{
++	dwc_wusb_prf(128, key, nonce, label, bytes, len, result);
++}
++
++/**
++ * The PRF-256 function described in section 6.5 of the WUSB spec.
++ *
++ * @param key, nonce, label, bytes, len, result  Same as for dwc_prf().
++ */
++static inline void dwc_wusb_prf_256(u8 *key, u8 *nonce,
++				    char *label, u8 *bytes, int len, u8 *result)
++{
++	dwc_wusb_prf(256, key, nonce, label, bytes, len, result);
++}
++
++
++void dwc_wusb_fill_ccm_nonce(uint16_t haddr, uint16_t daddr, uint8_t *tkid,
++			       uint8_t *nonce);
++void dwc_wusb_gen_nonce(uint16_t addr,
++			  uint8_t *nonce);
++
++void dwc_wusb_gen_key(uint8_t *ccm_nonce, uint8_t *mk,
++			uint8_t *hnonce, uint8_t *dnonce,
++			uint8_t *kck, uint8_t *ptk);
++
++
++void dwc_wusb_gen_mic(uint8_t *ccm_nonce, uint8_t
++			*kck, uint8_t *data, uint8_t *mic);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* _DWC_CRYPTO_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_dh.c
+@@ -0,0 +1,291 @@
++/* =========================================================================
++ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_dh.c $
++ * $Revision: #3 $
++ * $Date: 2010/09/28 $
++ * $Change: 1596182 $
++ *
++ * Synopsys Portability Library Software and documentation
++ * (hereinafter, "Software") is an Unsupported proprietary work of
++ * Synopsys, Inc. unless otherwise expressly agreed to in writing
++ * between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product
++ * under any End User Software License Agreement or Agreement for
++ * Licensed Product with Synopsys or any supplement thereto. You are
++ * permitted to use and redistribute this Software in source and binary
++ * forms, with or without modification, provided that redistributions
++ * of source code must retain this notice. You may not view, use,
++ * disclose, copy or distribute this file or any information contained
++ * herein except pursuant to this license grant from Synopsys. If you
++ * do not agree with this notice, including the disclaimer below, then
++ * you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
++ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
++ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
++ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================= */
++#ifdef DWC_CRYPTOLIB
++
++#ifndef CONFIG_MACH_IPMATE
++
++#include "dwc_dh.h"
++#include "dwc_modpow.h"
++
++#ifdef DEBUG
++/* This function prints out a buffer in the format described in the Association
++ * Model specification. */
++static void dh_dump(char *str, void *_num, int len)
++{
++	uint8_t *num = _num;
++	int i;
++	DWC_PRINTF("%s\n", str);
++	for (i = 0; i < len; i ++) {
++		DWC_PRINTF("%02x", num[i]);
++		if (((i + 1) % 2) == 0) DWC_PRINTF(" ");
++		if (((i + 1) % 26) == 0) DWC_PRINTF("\n");
++	}
++
++	DWC_PRINTF("\n");
++}
++#else
++#define dh_dump(_x...) do {; } while(0)
++#endif
++
++/* Constant g value */
++static __u32 dh_g[] = {
++	0x02000000,
++};
++
++/* Constant p value */
++static __u32 dh_p[] = {
++	0xFFFFFFFF, 0xFFFFFFFF, 0xA2DA0FC9, 0x34C26821, 0x8B62C6C4, 0xD11CDC80, 0x084E0229, 0x74CC678A,
++	0xA6BE0B02, 0x229B133B, 0x79084A51, 0xDD04348E, 0xB31995EF, 0x1B433ACD, 0x6D0A2B30, 0x37145FF2,
++	0x6D35E14F, 0x45C2516D, 0x76B585E4, 0xC67E5E62, 0xE9424CF4, 0x6BED37A6, 0xB65CFF0B, 0xEDB706F4,
++	0xFB6B38EE, 0xA59F895A, 0x11249FAE, 0xE61F4B7C, 0x51662849, 0x3D5BE4EC, 0xB87C00C2, 0x05BF63A1,
++	0x3648DA98, 0x9AD3551C, 0xA83F1669, 0x5FCF24FD, 0x235D6583, 0x96ADA3DC, 0x56F3621C, 0xBB528520,
++	0x0729D59E, 0x6D969670, 0x4E350C67, 0x0498BC4A, 0x086C74F1, 0x7C2118CA, 0x465E9032, 0x3BCE362E,
++	0x2C779EE3, 0x03860E18, 0xA283279B, 0x8FA207EC, 0xF05DC5B5, 0xC9524C6F, 0xF6CB2BDE, 0x18175895,
++	0x7C499539, 0xE56A95EA, 0x1826D215, 0x1005FA98, 0x5A8E7215, 0x2DC4AA8A, 0x0D1733AD, 0x337A5004,
++	0xAB2155A8, 0x64BA1CDF, 0x0485FBEC, 0x0AEFDB58, 0x5771EA8A, 0x7D0C065D, 0x850F97B3, 0xC7E4E1A6,
++	0x8CAEF5AB, 0xD73309DB, 0xE0948C1E, 0x9D61254A, 0x26D2E3CE, 0x6BEED21A, 0x06FA2FF1, 0x64088AD9,
++	0x730276D8, 0x646AC83E, 0x182B1F52, 0x0C207B17, 0x5717E1BB, 0x6C5D617A, 0xC0880977, 0xE246D9BA,
++	0xA04FE208, 0x31ABE574, 0xFC5BDB43, 0x8E10FDE0, 0x20D1824B, 0xCAD23AA9, 0xFFFFFFFF, 0xFFFFFFFF,
++};
++
++static void dh_swap_bytes(void *_in, void *_out, uint32_t len)
++{
++	uint8_t *in = _in;
++	uint8_t *out = _out;
++	int i;
++	for (i=0; i<len; i++) {
++		out[i] = in[len-1-i];
++	}
++}
++
++/* Computes the modular exponentiation (num^exp % mod).  num, exp, and mod are
++ * big endian numbers of size len, in bytes.  Each len value must be a multiple
++ * of 4. */
++int dwc_dh_modpow(void *mem_ctx, void *num, uint32_t num_len,
++		  void *exp, uint32_t exp_len,
++		  void *mod, uint32_t mod_len,
++		  void *out)
++{
++	/* modpow() takes little endian numbers.  AM uses big-endian.  This
++	 * function swaps bytes of numbers before passing onto modpow. */
++
++	int retval = 0;
++	uint32_t *result;
++
++	uint32_t *bignum_num = dwc_alloc(mem_ctx, num_len + 4);
++	uint32_t *bignum_exp = dwc_alloc(mem_ctx, exp_len + 4);
++	uint32_t *bignum_mod = dwc_alloc(mem_ctx, mod_len + 4);
++
++	dh_swap_bytes(num, &bignum_num[1], num_len);
++	bignum_num[0] = num_len / 4;
++
++	dh_swap_bytes(exp, &bignum_exp[1], exp_len);
++	bignum_exp[0] = exp_len / 4;
++
++	dh_swap_bytes(mod, &bignum_mod[1], mod_len);
++	bignum_mod[0] = mod_len / 4;
++
++	result = dwc_modpow(mem_ctx, bignum_num, bignum_exp, bignum_mod);
++	if (!result) {
++		retval = -1;
++		goto dh_modpow_nomem;
++	}
++
++	dh_swap_bytes(&result[1], out, result[0] * 4);
++	dwc_free(mem_ctx, result);
++
++ dh_modpow_nomem:
++	dwc_free(mem_ctx, bignum_num);
++	dwc_free(mem_ctx, bignum_exp);
++	dwc_free(mem_ctx, bignum_mod);
++	return retval;
++}
++
++
++int dwc_dh_pk(void *mem_ctx, uint8_t nd, uint8_t *exp, uint8_t *pk, uint8_t *hash)
++{
++	int retval;
++	uint8_t m3[385];
++
++#ifndef DH_TEST_VECTORS
++	DWC_RANDOM_BYTES(exp, 32);
++#endif
++
++	/* Compute the pkd */
++	if ((retval = dwc_dh_modpow(mem_ctx, dh_g, 4,
++				    exp, 32,
++				    dh_p, 384, pk))) {
++		return retval;
++	}
++
++	m3[384] = nd;
++	DWC_MEMCPY(&m3[0], pk, 384);
++	DWC_SHA256(m3, 385, hash);
++
++	dh_dump("PK", pk, 384);
++	dh_dump("SHA-256(M3)", hash, 32);
++	return 0;
++}
++
++int dwc_dh_derive_keys(void *mem_ctx, uint8_t nd, uint8_t *pkh, uint8_t *pkd,
++		       uint8_t *exp, int is_host,
++		       char *dd, uint8_t *ck, uint8_t *kdk)
++{
++	int retval;
++	uint8_t mv[784];
++	uint8_t sha_result[32];
++	uint8_t dhkey[384];
++	uint8_t shared_secret[384];
++	char *message;
++	uint32_t vd;
++
++	uint8_t *pk;
++
++	if (is_host) {
++		pk = pkd;
++	}
++	else {
++		pk = pkh;
++	}
++
++	if ((retval = dwc_dh_modpow(mem_ctx, pk, 384,
++				    exp, 32,
++				    dh_p, 384, shared_secret))) {
++		return retval;
++	}
++	dh_dump("Shared Secret", shared_secret, 384);
++
++	DWC_SHA256(shared_secret, 384, dhkey);
++	dh_dump("DHKEY", dhkey, 384);
++
++	DWC_MEMCPY(&mv[0], pkd, 384);
++	DWC_MEMCPY(&mv[384], pkh, 384);
++	DWC_MEMCPY(&mv[768], "displayed digest", 16);
++	dh_dump("MV", mv, 784);
++
++	DWC_SHA256(mv, 784, sha_result);
++	dh_dump("SHA-256(MV)", sha_result, 32);
++	dh_dump("First 32-bits of SHA-256(MV)", sha_result, 4);
++
++	dh_swap_bytes(sha_result, &vd, 4);
++#ifdef DEBUG
++	DWC_PRINTF("Vd (decimal) = %d\n", vd);
++#endif
++
++	switch (nd) {
++	case 2:
++		vd = vd % 100;
++		DWC_SPRINTF(dd, "%02d", vd);
++		break;
++	case 3:
++		vd = vd % 1000;
++		DWC_SPRINTF(dd, "%03d", vd);
++		break;
++	case 4:
++		vd = vd % 10000;
++		DWC_SPRINTF(dd, "%04d", vd);
++		break;
++	}
++#ifdef DEBUG
++	DWC_PRINTF("Display Digits: %s\n", dd);
++#endif
++
++	message = "connection key";
++	DWC_HMAC_SHA256(message, DWC_STRLEN(message), dhkey, 32, sha_result);
++	dh_dump("HMAC(SHA-256, DHKey, connection key)", sha_result, 32);
++	DWC_MEMCPY(ck, sha_result, 16);
++
++	message = "key derivation key";
++	DWC_HMAC_SHA256(message, DWC_STRLEN(message), dhkey, 32, sha_result);
++	dh_dump("HMAC(SHA-256, DHKey, key derivation key)", sha_result, 32);
++	DWC_MEMCPY(kdk, sha_result, 32);
++
++	return 0;
++}
++
++
++#ifdef DH_TEST_VECTORS
++
++static __u8 dh_a[] = {
++	0x44, 0x00, 0x51, 0xd6,
++	0xf0, 0xb5, 0x5e, 0xa9,
++	0x67, 0xab, 0x31, 0xc6,
++	0x8a, 0x8b, 0x5e, 0x37,
++	0xd9, 0x10, 0xda, 0xe0,
++	0xe2, 0xd4, 0x59, 0xa4,
++	0x86, 0x45, 0x9c, 0xaa,
++	0xdf, 0x36, 0x75, 0x16,
++};
++
++static __u8 dh_b[] = {
++	0x5d, 0xae, 0xc7, 0x86,
++	0x79, 0x80, 0xa3, 0x24,
++	0x8c, 0xe3, 0x57, 0x8f,
++	0xc7, 0x5f, 0x1b, 0x0f,
++	0x2d, 0xf8, 0x9d, 0x30,
++	0x6f, 0xa4, 0x52, 0xcd,
++	0xe0, 0x7a, 0x04, 0x8a,
++	0xde, 0xd9, 0x26, 0x56,
++};
++
++void dwc_run_dh_test_vectors(void *mem_ctx)
++{
++	uint8_t pkd[384];
++	uint8_t pkh[384];
++	uint8_t hashd[32];
++	uint8_t hashh[32];
++	uint8_t ck[16];
++	uint8_t kdk[32];
++	char dd[5];
++
++	DWC_PRINTF("\n\n\nDH_TEST_VECTORS\n\n");
++
++	/* compute the PKd and SHA-256(PKd || Nd) */
++	DWC_PRINTF("Computing PKd\n");
++	dwc_dh_pk(mem_ctx, 2, dh_a, pkd, hashd);
++
++	/* compute the PKd and SHA-256(PKh || Nd) */
++	DWC_PRINTF("Computing PKh\n");
++	dwc_dh_pk(mem_ctx, 2, dh_b, pkh, hashh);
++
++	/* compute the dhkey */
++	dwc_dh_derive_keys(mem_ctx, 2, pkh, pkd, dh_a, 0, dd, ck, kdk);
++}
++#endif /* DH_TEST_VECTORS */
++
++#endif /* !CONFIG_MACH_IPMATE */
++
++#endif /* DWC_CRYPTOLIB */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_dh.h
+@@ -0,0 +1,106 @@
++/* =========================================================================
++ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_dh.h $
++ * $Revision: #4 $
++ * $Date: 2010/09/28 $
++ * $Change: 1596182 $
++ *
++ * Synopsys Portability Library Software and documentation
++ * (hereinafter, "Software") is an Unsupported proprietary work of
++ * Synopsys, Inc. unless otherwise expressly agreed to in writing
++ * between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product
++ * under any End User Software License Agreement or Agreement for
++ * Licensed Product with Synopsys or any supplement thereto. You are
++ * permitted to use and redistribute this Software in source and binary
++ * forms, with or without modification, provided that redistributions
++ * of source code must retain this notice. You may not view, use,
++ * disclose, copy or distribute this file or any information contained
++ * herein except pursuant to this license grant from Synopsys. If you
++ * do not agree with this notice, including the disclaimer below, then
++ * you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
++ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
++ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
++ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================= */
++#ifndef _DWC_DH_H_
++#define _DWC_DH_H_
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "dwc_os.h"
++
++/** @file
++ *
++ * This file defines the common functions on device and host for performing
++ * numeric association as defined in the WUSB spec.  They are only to be
++ * used internally by the DWC UWB modules. */
++
++extern int dwc_dh_sha256(uint8_t *message, uint32_t len, uint8_t *out);
++extern int dwc_dh_hmac_sha256(uint8_t *message, uint32_t messagelen,
++			      uint8_t *key, uint32_t keylen,
++			      uint8_t *out);
++extern int dwc_dh_modpow(void *mem_ctx, void *num, uint32_t num_len,
++			 void *exp, uint32_t exp_len,
++			 void *mod, uint32_t mod_len,
++			 void *out);
++
++/** Computes PKD or PKH, and SHA-256(PKd || Nd)
++ *
++ * PK = g^exp mod p.
++ *
++ * Input:
++ * Nd = Number of digits on the device.
++ *
++ * Output:
++ * exp = A 32-byte buffer to be filled with a randomly generated number.
++ *       used as either A or B.
++ * pk = A 384-byte buffer to be filled with the PKH or PKD.
++ * hash = A 32-byte buffer to be filled with SHA-256(PK || ND).
++ */
++extern int dwc_dh_pk(void *mem_ctx, uint8_t nd, uint8_t *exp, uint8_t *pkd, uint8_t *hash);
++
++/** Computes the DHKEY, and VD.
++ *
++ * If called from host, then it will comput DHKEY=PKD^exp % p.
++ * If called from device, then it will comput DHKEY=PKH^exp % p.
++ *
++ * Input:
++ * pkd = The PKD value.
++ * pkh = The PKH value.
++ * exp = The A value (if device) or B value (if host) generated in dwc_wudev_dh_pk.
++ * is_host = Set to non zero if a WUSB host is calling this function.
++ *
++ * Output:
++
++ * dd = A pointer to an buffer to be set to the displayed digits string to be shown
++ *      to the user.  This buffer should be at 5 bytes long to hold 4 digits plus a
++ *      null termination character.  This buffer can be used directly for display.
++ * ck = A 16-byte buffer to be filled with the CK.
++ * kdk = A 32-byte buffer to be filled with the KDK.
++ */
++extern int dwc_dh_derive_keys(void *mem_ctx, uint8_t nd, uint8_t *pkh, uint8_t *pkd,
++			      uint8_t *exp, int is_host,
++			      char *dd, uint8_t *ck, uint8_t *kdk);
++
++#ifdef DH_TEST_VECTORS
++extern void dwc_run_dh_test_vectors(void);
++#endif
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* _DWC_DH_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_list.h
+@@ -0,0 +1,594 @@
++/*	$OpenBSD: queue.h,v 1.26 2004/05/04 16:59:32 grange Exp $	*/
++/*	$NetBSD: queue.h,v 1.11 1996/05/16 05:17:14 mycroft Exp $	*/
++
++/*
++ * Copyright (c) 1991, 1993
++ *	The Regents of the University of California.  All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. Neither the name of the University nor the names of its contributors
++ *    may be used to endorse or promote products derived from this software
++ *    without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
++ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
++ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
++ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
++ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ *
++ *	@(#)queue.h	8.5 (Berkeley) 8/20/94
++ */
++
++#ifndef _DWC_LIST_H_
++#define _DWC_LIST_H_
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/** @file
++ *
++ * This file defines linked list operations.  It is derived from BSD with
++ * only the MACRO names being prefixed with DWC_.  This is because a few of
++ * these names conflict with those on Linux.  For documentation on use, see the
++ * inline comments in the source code.  The original license for this source
++ * code applies and is preserved in the dwc_list.h source file.
++ */
++
++/*
++ * This file defines five types of data structures: singly-linked lists,
++ * lists, simple queues, tail queues, and circular queues.
++ *
++ *
++ * A singly-linked list is headed by a single forward pointer. The elements
++ * are singly linked for minimum space and pointer manipulation overhead at
++ * the expense of O(n) removal for arbitrary elements. New elements can be
++ * added to the list after an existing element or at the head of the list.
++ * Elements being removed from the head of the list should use the explicit
++ * macro for this purpose for optimum efficiency. A singly-linked list may
++ * only be traversed in the forward direction.  Singly-linked lists are ideal
++ * for applications with large datasets and few or no removals or for
++ * implementing a LIFO queue.
++ *
++ * A list is headed by a single forward pointer (or an array of forward
++ * pointers for a hash table header). The elements are doubly linked
++ * so that an arbitrary element can be removed without a need to
++ * traverse the list. New elements can be added to the list before
++ * or after an existing element or at the head of the list. A list
++ * may only be traversed in the forward direction.
++ *
++ * A simple queue is headed by a pair of pointers, one the head of the
++ * list and the other to the tail of the list. The elements are singly
++ * linked to save space, so elements can only be removed from the
++ * head of the list. New elements can be added to the list before or after
++ * an existing element, at the head of the list, or at the end of the
++ * list. A simple queue may only be traversed in the forward direction.
++ *
++ * A tail queue is headed by a pair of pointers, one to the head of the
++ * list and the other to the tail of the list. The elements are doubly
++ * linked so that an arbitrary element can be removed without a need to
++ * traverse the list. New elements can be added to the list before or
++ * after an existing element, at the head of the list, or at the end of
++ * the list. A tail queue may be traversed in either direction.
++ *
++ * A circle queue is headed by a pair of pointers, one to the head of the
++ * list and the other to the tail of the list. The elements are doubly
++ * linked so that an arbitrary element can be removed without a need to
++ * traverse the list. New elements can be added to the list before or after
++ * an existing element, at the head of the list, or at the end of the list.
++ * A circle queue may be traversed in either direction, but has a more
++ * complex end of list detection.
++ *
++ * For details on the use of these macros, see the queue(3) manual page.
++ */
++
++/*
++ * Double-linked List.
++ */
++
++typedef struct dwc_list_link {
++	struct dwc_list_link *next;
++	struct dwc_list_link *prev;
++} dwc_list_link_t;
++
++#define DWC_LIST_INIT(link) do {	\
++	(link)->next = (link);		\
++	(link)->prev = (link);		\
++} while (0)
++
++#define DWC_LIST_FIRST(link)	((link)->next)
++#define DWC_LIST_LAST(link)	((link)->prev)
++#define DWC_LIST_END(link)	(link)
++#define DWC_LIST_NEXT(link)	((link)->next)
++#define DWC_LIST_PREV(link)	((link)->prev)
++#define DWC_LIST_EMPTY(link)	\
++	(DWC_LIST_FIRST(link) == DWC_LIST_END(link))
++#define DWC_LIST_ENTRY(link, type, field)			\
++	(type *)((uint8_t *)(link) - (size_t)(&((type *)0)->field))
++
++#if 0
++#define DWC_LIST_INSERT_HEAD(list, link) do {			\
++	(link)->next = (list)->next;				\
++	(link)->prev = (list);					\
++	(list)->next->prev = (link);				\
++	(list)->next = (link);					\
++} while (0)
++
++#define DWC_LIST_INSERT_TAIL(list, link) do {			\
++	(link)->next = (list);					\
++	(link)->prev = (list)->prev;				\
++	(list)->prev->next = (link);				\
++	(list)->prev = (link);					\
++} while (0)
++#else
++#define DWC_LIST_INSERT_HEAD(list, link) do {			\
++	dwc_list_link_t *__next__ = (list)->next;		\
++	__next__->prev = (link);				\
++	(link)->next = __next__;				\
++	(link)->prev = (list);					\
++	(list)->next = (link);					\
++} while (0)
++
++#define DWC_LIST_INSERT_TAIL(list, link) do {			\
++	dwc_list_link_t *__prev__ = (list)->prev;		\
++	(list)->prev = (link);					\
++	(link)->next = (list);					\
++	(link)->prev = __prev__;				\
++	__prev__->next = (link);				\
++} while (0)
++#endif
++
++#if 0
++static inline void __list_add(struct list_head *new,
++                              struct list_head *prev,
++                              struct list_head *next)
++{
++        next->prev = new;
++        new->next = next;
++        new->prev = prev;
++        prev->next = new;
++}
++
++static inline void list_add(struct list_head *new, struct list_head *head)
++{
++        __list_add(new, head, head->next);
++}
++
++static inline void list_add_tail(struct list_head *new, struct list_head *head)
++{
++        __list_add(new, head->prev, head);
++}
++
++static inline void __list_del(struct list_head * prev, struct list_head * next)
++{
++        next->prev = prev;
++        prev->next = next;
++}
++
++static inline void list_del(struct list_head *entry)
++{
++        __list_del(entry->prev, entry->next);
++        entry->next = LIST_POISON1;
++        entry->prev = LIST_POISON2;
++}
++#endif
++
++#define DWC_LIST_REMOVE(link) do {				\
++	(link)->next->prev = (link)->prev;			\
++	(link)->prev->next = (link)->next;			\
++} while (0)
++
++#define DWC_LIST_REMOVE_INIT(link) do {				\
++	DWC_LIST_REMOVE(link);					\
++	DWC_LIST_INIT(link);					\
++} while (0)
++
++#define DWC_LIST_MOVE_HEAD(list, link) do {			\
++	DWC_LIST_REMOVE(link);					\
++	DWC_LIST_INSERT_HEAD(list, link);			\
++} while (0)
++
++#define DWC_LIST_MOVE_TAIL(list, link) do {			\
++	DWC_LIST_REMOVE(link);					\
++	DWC_LIST_INSERT_TAIL(list, link);			\
++} while (0)
++
++#define DWC_LIST_FOREACH(var, list)				\
++	for((var) = DWC_LIST_FIRST(list);			\
++	    (var) != DWC_LIST_END(list);			\
++	    (var) = DWC_LIST_NEXT(var))
++
++#define DWC_LIST_FOREACH_SAFE(var, var2, list)			\
++	for((var) = DWC_LIST_FIRST(list), (var2) = DWC_LIST_NEXT(var);	\
++	    (var) != DWC_LIST_END(list);			\
++	    (var) = (var2), (var2) = DWC_LIST_NEXT(var2))
++
++#define DWC_LIST_FOREACH_REVERSE(var, list)			\
++	for((var) = DWC_LIST_LAST(list);			\
++	    (var) != DWC_LIST_END(list);			\
++	    (var) = DWC_LIST_PREV(var))
++
++/*
++ * Singly-linked List definitions.
++ */
++#define DWC_SLIST_HEAD(name, type)					\
++struct name {								\
++	struct type *slh_first;	/* first element */			\
++}
++
++#define DWC_SLIST_HEAD_INITIALIZER(head)				\
++	{ NULL }
++
++#define DWC_SLIST_ENTRY(type)						\
++struct {								\
++	struct type *sle_next;	/* next element */			\
++}
++
++/*
++ * Singly-linked List access methods.
++ */
++#define DWC_SLIST_FIRST(head)	((head)->slh_first)
++#define DWC_SLIST_END(head)		NULL
++#define DWC_SLIST_EMPTY(head)	(SLIST_FIRST(head) == SLIST_END(head))
++#define DWC_SLIST_NEXT(elm, field)	((elm)->field.sle_next)
++
++#define DWC_SLIST_FOREACH(var, head, field)				\
++	for((var) = SLIST_FIRST(head);					\
++	    (var) != SLIST_END(head);					\
++	    (var) = SLIST_NEXT(var, field))
++
++#define DWC_SLIST_FOREACH_PREVPTR(var, varp, head, field)		\
++	for((varp) = &SLIST_FIRST((head));				\
++	    ((var) = *(varp)) != SLIST_END(head);			\
++	    (varp) = &SLIST_NEXT((var), field))
++
++/*
++ * Singly-linked List functions.
++ */
++#define DWC_SLIST_INIT(head) {						\
++	SLIST_FIRST(head) = SLIST_END(head);				\
++}
++
++#define DWC_SLIST_INSERT_AFTER(slistelm, elm, field) do {		\
++	(elm)->field.sle_next = (slistelm)->field.sle_next;		\
++	(slistelm)->field.sle_next = (elm);				\
++} while (0)
++
++#define DWC_SLIST_INSERT_HEAD(head, elm, field) do {			\
++	(elm)->field.sle_next = (head)->slh_first;			\
++	(head)->slh_first = (elm);					\
++} while (0)
++
++#define DWC_SLIST_REMOVE_NEXT(head, elm, field) do {			\
++	(elm)->field.sle_next = (elm)->field.sle_next->field.sle_next;	\
++} while (0)
++
++#define DWC_SLIST_REMOVE_HEAD(head, field) do {				\
++	(head)->slh_first = (head)->slh_first->field.sle_next;		\
++} while (0)
++
++#define DWC_SLIST_REMOVE(head, elm, type, field) do {			\
++	if ((head)->slh_first == (elm)) {				\
++		SLIST_REMOVE_HEAD((head), field);			\
++	}								\
++	else {								\
++		struct type *curelm = (head)->slh_first;		\
++		while( curelm->field.sle_next != (elm) )		\
++			curelm = curelm->field.sle_next;		\
++		curelm->field.sle_next =				\
++		    curelm->field.sle_next->field.sle_next;		\
++	}								\
++} while (0)
++
++/*
++ * Simple queue definitions.
++ */
++#define DWC_SIMPLEQ_HEAD(name, type)					\
++struct name {								\
++	struct type *sqh_first;	/* first element */			\
++	struct type **sqh_last;	/* addr of last next element */		\
++}
++
++#define DWC_SIMPLEQ_HEAD_INITIALIZER(head)				\
++	{ NULL, &(head).sqh_first }
++
++#define DWC_SIMPLEQ_ENTRY(type)						\
++struct {								\
++	struct type *sqe_next;	/* next element */			\
++}
++
++/*
++ * Simple queue access methods.
++ */
++#define DWC_SIMPLEQ_FIRST(head)	    ((head)->sqh_first)
++#define DWC_SIMPLEQ_END(head)	    NULL
++#define DWC_SIMPLEQ_EMPTY(head)	    (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
++#define DWC_SIMPLEQ_NEXT(elm, field)    ((elm)->field.sqe_next)
++
++#define DWC_SIMPLEQ_FOREACH(var, head, field)				\
++	for((var) = SIMPLEQ_FIRST(head);				\
++	    (var) != SIMPLEQ_END(head);					\
++	    (var) = SIMPLEQ_NEXT(var, field))
++
++/*
++ * Simple queue functions.
++ */
++#define DWC_SIMPLEQ_INIT(head) do {					\
++	(head)->sqh_first = NULL;					\
++	(head)->sqh_last = &(head)->sqh_first;				\
++} while (0)
++
++#define DWC_SIMPLEQ_INSERT_HEAD(head, elm, field) do {			\
++	if (((elm)->field.sqe_next = (head)->sqh_first) == NULL)	\
++		(head)->sqh_last = &(elm)->field.sqe_next;		\
++	(head)->sqh_first = (elm);					\
++} while (0)
++
++#define DWC_SIMPLEQ_INSERT_TAIL(head, elm, field) do {			\
++	(elm)->field.sqe_next = NULL;					\
++	*(head)->sqh_last = (elm);					\
++	(head)->sqh_last = &(elm)->field.sqe_next;			\
++} while (0)
++
++#define DWC_SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do {	\
++	if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
++		(head)->sqh_last = &(elm)->field.sqe_next;		\
++	(listelm)->field.sqe_next = (elm);				\
++} while (0)
++
++#define DWC_SIMPLEQ_REMOVE_HEAD(head, field) do {			\
++	if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
++		(head)->sqh_last = &(head)->sqh_first;			\
++} while (0)
++
++/*
++ * Tail queue definitions.
++ */
++#define DWC_TAILQ_HEAD(name, type)					\
++struct name {								\
++	struct type *tqh_first;	/* first element */			\
++	struct type **tqh_last;	/* addr of last next element */		\
++}
++
++#define DWC_TAILQ_HEAD_INITIALIZER(head)				\
++	{ NULL, &(head).tqh_first }
++
++#define DWC_TAILQ_ENTRY(type)						\
++struct {								\
++	struct type *tqe_next;	/* next element */			\
++	struct type **tqe_prev;	/* address of previous next element */	\
++}
++
++/*
++ * tail queue access methods
++ */
++#define DWC_TAILQ_FIRST(head)		((head)->tqh_first)
++#define DWC_TAILQ_END(head)		NULL
++#define DWC_TAILQ_NEXT(elm, field)	((elm)->field.tqe_next)
++#define DWC_TAILQ_LAST(head, headname)					\
++	(*(((struct headname *)((head)->tqh_last))->tqh_last))
++/* XXX */
++#define DWC_TAILQ_PREV(elm, headname, field)				\
++	(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
++#define DWC_TAILQ_EMPTY(head)						\
++	(DWC_TAILQ_FIRST(head) == DWC_TAILQ_END(head))
++
++#define DWC_TAILQ_FOREACH(var, head, field)				\
++	for ((var) = DWC_TAILQ_FIRST(head);				\
++	    (var) != DWC_TAILQ_END(head);				\
++	    (var) = DWC_TAILQ_NEXT(var, field))
++
++#define DWC_TAILQ_FOREACH_REVERSE(var, head, headname, field)		\
++	for ((var) = DWC_TAILQ_LAST(head, headname);			\
++	    (var) != DWC_TAILQ_END(head);				\
++	    (var) = DWC_TAILQ_PREV(var, headname, field))
++
++/*
++ * Tail queue functions.
++ */
++#define DWC_TAILQ_INIT(head) do {					\
++	(head)->tqh_first = NULL;					\
++	(head)->tqh_last = &(head)->tqh_first;				\
++} while (0)
++
++#define DWC_TAILQ_INSERT_HEAD(head, elm, field) do {			\
++	if (((elm)->field.tqe_next = (head)->tqh_first) != NULL)	\
++		(head)->tqh_first->field.tqe_prev =			\
++		    &(elm)->field.tqe_next;				\
++	else								\
++		(head)->tqh_last = &(elm)->field.tqe_next;		\
++	(head)->tqh_first = (elm);					\
++	(elm)->field.tqe_prev = &(head)->tqh_first;			\
++} while (0)
++
++#define DWC_TAILQ_INSERT_TAIL(head, elm, field) do {			\
++	(elm)->field.tqe_next = NULL;					\
++	(elm)->field.tqe_prev = (head)->tqh_last;			\
++	*(head)->tqh_last = (elm);					\
++	(head)->tqh_last = &(elm)->field.tqe_next;			\
++} while (0)
++
++#define DWC_TAILQ_INSERT_AFTER(head, listelm, elm, field) do {		\
++	if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
++		(elm)->field.tqe_next->field.tqe_prev =			\
++		    &(elm)->field.tqe_next;				\
++	else								\
++		(head)->tqh_last = &(elm)->field.tqe_next;		\
++	(listelm)->field.tqe_next = (elm);				\
++	(elm)->field.tqe_prev = &(listelm)->field.tqe_next;		\
++} while (0)
++
++#define DWC_TAILQ_INSERT_BEFORE(listelm, elm, field) do {		\
++	(elm)->field.tqe_prev = (listelm)->field.tqe_prev;		\
++	(elm)->field.tqe_next = (listelm);				\
++	*(listelm)->field.tqe_prev = (elm);				\
++	(listelm)->field.tqe_prev = &(elm)->field.tqe_next;		\
++} while (0)
++
++#define DWC_TAILQ_REMOVE(head, elm, field) do {				\
++	if (((elm)->field.tqe_next) != NULL)				\
++		(elm)->field.tqe_next->field.tqe_prev =			\
++		    (elm)->field.tqe_prev;				\
++	else								\
++		(head)->tqh_last = (elm)->field.tqe_prev;		\
++	*(elm)->field.tqe_prev = (elm)->field.tqe_next;			\
++} while (0)
++
++#define DWC_TAILQ_REPLACE(head, elm, elm2, field) do {			\
++	if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL)	\
++		(elm2)->field.tqe_next->field.tqe_prev =		\
++		    &(elm2)->field.tqe_next;				\
++	else								\
++		(head)->tqh_last = &(elm2)->field.tqe_next;		\
++	(elm2)->field.tqe_prev = (elm)->field.tqe_prev;			\
++	*(elm2)->field.tqe_prev = (elm2);				\
++} while (0)
++
++/*
++ * Circular queue definitions.
++ */
++#define DWC_CIRCLEQ_HEAD(name, type)					\
++struct name {								\
++	struct type *cqh_first;		/* first element */		\
++	struct type *cqh_last;		/* last element */		\
++}
++
++#define DWC_CIRCLEQ_HEAD_INITIALIZER(head)				\
++	{ DWC_CIRCLEQ_END(&head), DWC_CIRCLEQ_END(&head) }
++
++#define DWC_CIRCLEQ_ENTRY(type)						\
++struct {								\
++	struct type *cqe_next;		/* next element */		\
++	struct type *cqe_prev;		/* previous element */		\
++}
++
++/*
++ * Circular queue access methods
++ */
++#define DWC_CIRCLEQ_FIRST(head)		((head)->cqh_first)
++#define DWC_CIRCLEQ_LAST(head)		((head)->cqh_last)
++#define DWC_CIRCLEQ_END(head)		((void *)(head))
++#define DWC_CIRCLEQ_NEXT(elm, field)	((elm)->field.cqe_next)
++#define DWC_CIRCLEQ_PREV(elm, field)	((elm)->field.cqe_prev)
++#define DWC_CIRCLEQ_EMPTY(head)						\
++	(DWC_CIRCLEQ_FIRST(head) == DWC_CIRCLEQ_END(head))
++
++#define DWC_CIRCLEQ_EMPTY_ENTRY(elm, field) (((elm)->field.cqe_next == NULL) && ((elm)->field.cqe_prev == NULL))
++
++#define DWC_CIRCLEQ_FOREACH(var, head, field)				\
++	for((var) = DWC_CIRCLEQ_FIRST(head);				\
++	    (var) != DWC_CIRCLEQ_END(head);				\
++	    (var) = DWC_CIRCLEQ_NEXT(var, field))
++
++#define DWC_CIRCLEQ_FOREACH_SAFE(var, var2, head, field)			\
++	for((var) = DWC_CIRCLEQ_FIRST(head), var2 = DWC_CIRCLEQ_NEXT(var, field); \
++	    (var) != DWC_CIRCLEQ_END(head);					\
++	    (var) = var2, var2 = DWC_CIRCLEQ_NEXT(var, field))
++
++#define DWC_CIRCLEQ_FOREACH_REVERSE(var, head, field)			\
++	for((var) = DWC_CIRCLEQ_LAST(head);				\
++	    (var) != DWC_CIRCLEQ_END(head);				\
++	    (var) = DWC_CIRCLEQ_PREV(var, field))
++
++/*
++ * Circular queue functions.
++ */
++#define DWC_CIRCLEQ_INIT(head) do {					\
++	(head)->cqh_first = DWC_CIRCLEQ_END(head);			\
++	(head)->cqh_last = DWC_CIRCLEQ_END(head);			\
++} while (0)
++
++#define DWC_CIRCLEQ_INIT_ENTRY(elm, field) do {				\
++	(elm)->field.cqe_next = NULL;					\
++	(elm)->field.cqe_prev = NULL;					\
++} while (0)
++
++#define DWC_CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {	\
++	(elm)->field.cqe_next = (listelm)->field.cqe_next;		\
++	(elm)->field.cqe_prev = (listelm);				\
++	if ((listelm)->field.cqe_next == DWC_CIRCLEQ_END(head))		\
++		(head)->cqh_last = (elm);				\
++	else								\
++		(listelm)->field.cqe_next->field.cqe_prev = (elm);	\
++	(listelm)->field.cqe_next = (elm);				\
++} while (0)
++
++#define DWC_CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {	\
++	(elm)->field.cqe_next = (listelm);				\
++	(elm)->field.cqe_prev = (listelm)->field.cqe_prev;		\
++	if ((listelm)->field.cqe_prev == DWC_CIRCLEQ_END(head))		\
++		(head)->cqh_first = (elm);				\
++	else								\
++		(listelm)->field.cqe_prev->field.cqe_next = (elm);	\
++	(listelm)->field.cqe_prev = (elm);				\
++} while (0)
++
++#define DWC_CIRCLEQ_INSERT_HEAD(head, elm, field) do {			\
++	(elm)->field.cqe_next = (head)->cqh_first;			\
++	(elm)->field.cqe_prev = DWC_CIRCLEQ_END(head);			\
++	if ((head)->cqh_last == DWC_CIRCLEQ_END(head))			\
++		(head)->cqh_last = (elm);				\
++	else								\
++		(head)->cqh_first->field.cqe_prev = (elm);		\
++	(head)->cqh_first = (elm);					\
++} while (0)
++
++#define DWC_CIRCLEQ_INSERT_TAIL(head, elm, field) do {			\
++	(elm)->field.cqe_next = DWC_CIRCLEQ_END(head);			\
++	(elm)->field.cqe_prev = (head)->cqh_last;			\
++	if ((head)->cqh_first == DWC_CIRCLEQ_END(head))			\
++		(head)->cqh_first = (elm);				\
++	else								\
++		(head)->cqh_last->field.cqe_next = (elm);		\
++	(head)->cqh_last = (elm);					\
++} while (0)
++
++#define DWC_CIRCLEQ_REMOVE(head, elm, field) do {			\
++	if ((elm)->field.cqe_next == DWC_CIRCLEQ_END(head))		\
++		(head)->cqh_last = (elm)->field.cqe_prev;		\
++	else								\
++		(elm)->field.cqe_next->field.cqe_prev =			\
++		    (elm)->field.cqe_prev;				\
++	if ((elm)->field.cqe_prev == DWC_CIRCLEQ_END(head))		\
++		(head)->cqh_first = (elm)->field.cqe_next;		\
++	else								\
++		(elm)->field.cqe_prev->field.cqe_next =			\
++		    (elm)->field.cqe_next;				\
++} while (0)
++
++#define DWC_CIRCLEQ_REMOVE_INIT(head, elm, field) do {			\
++	DWC_CIRCLEQ_REMOVE(head, elm, field);				\
++	DWC_CIRCLEQ_INIT_ENTRY(elm, field);				\
++} while (0)
++
++#define DWC_CIRCLEQ_REPLACE(head, elm, elm2, field) do {		\
++	if (((elm2)->field.cqe_next = (elm)->field.cqe_next) ==		\
++	    DWC_CIRCLEQ_END(head))					\
++		(head).cqh_last = (elm2);				\
++	else								\
++		(elm2)->field.cqe_next->field.cqe_prev = (elm2);	\
++	if (((elm2)->field.cqe_prev = (elm)->field.cqe_prev) ==		\
++	    DWC_CIRCLEQ_END(head))					\
++		(head).cqh_first = (elm2);				\
++	else								\
++		(elm2)->field.cqe_prev->field.cqe_next = (elm2);	\
++} while (0)
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* _DWC_LIST_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_mem.c
+@@ -0,0 +1,245 @@
++/* Memory Debugging */
++#ifdef DWC_DEBUG_MEMORY
++
++#include "dwc_os.h"
++#include "dwc_list.h"
++
++struct allocation {
++	void *addr;
++	void *ctx;
++	char *func;
++	int line;
++	uint32_t size;
++	int dma;
++	DWC_CIRCLEQ_ENTRY(allocation) entry;
++};
++
++DWC_CIRCLEQ_HEAD(allocation_queue, allocation);
++
++struct allocation_manager {
++	void *mem_ctx;
++	struct allocation_queue allocations;
++
++	/* statistics */
++	int num;
++	int num_freed;
++	int num_active;
++	uint32_t total;
++	uint32_t cur;
++	uint32_t max;
++};
++
++static struct allocation_manager *manager = NULL;
++
++static int add_allocation(void *ctx, uint32_t size, char const *func, int line, void *addr,
++			  int dma)
++{
++	struct allocation *a;
++
++	DWC_ASSERT(manager != NULL, "manager not allocated");
++
++	a = __DWC_ALLOC_ATOMIC(manager->mem_ctx, sizeof(*a));
++	if (!a) {
++		return -DWC_E_NO_MEMORY;
++	}
++
++	a->func = __DWC_ALLOC_ATOMIC(manager->mem_ctx, DWC_STRLEN(func) + 1);
++	if (!a->func) {
++		__DWC_FREE(manager->mem_ctx, a);
++		return -DWC_E_NO_MEMORY;
++	}
++
++	DWC_MEMCPY(a->func, func, DWC_STRLEN(func) + 1);
++	a->addr = addr;
++	a->ctx = ctx;
++	a->line = line;
++	a->size = size;
++	a->dma = dma;
++	DWC_CIRCLEQ_INSERT_TAIL(&manager->allocations, a, entry);
++
++	/* Update stats */
++	manager->num++;
++	manager->num_active++;
++	manager->total += size;
++	manager->cur += size;
++
++	if (manager->max < manager->cur) {
++		manager->max = manager->cur;
++	}
++
++	return 0;
++}
++
++static struct allocation *find_allocation(void *ctx, void *addr)
++{
++	struct allocation *a;
++
++	DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
++		if (a->ctx == ctx && a->addr == addr) {
++			return a;
++		}
++	}
++
++	return NULL;
++}
++
++static void free_allocation(void *ctx, void *addr, char const *func, int line)
++{
++	struct allocation *a = find_allocation(ctx, addr);
++
++	if (!a) {
++		DWC_ASSERT(0,
++			   "Free of address %p that was never allocated or already freed %s:%d",
++			   addr, func, line);
++		return;
++	}
++
++	DWC_CIRCLEQ_REMOVE(&manager->allocations, a, entry);
++
++	manager->num_active--;
++	manager->num_freed++;
++	manager->cur -= a->size;
++	__DWC_FREE(manager->mem_ctx, a->func);
++	__DWC_FREE(manager->mem_ctx, a);
++}
++
++int dwc_memory_debug_start(void *mem_ctx)
++{
++	DWC_ASSERT(manager == NULL, "Memory debugging has already started\n");
++
++	if (manager) {
++		return -DWC_E_BUSY;
++	}
++
++	manager = __DWC_ALLOC(mem_ctx, sizeof(*manager));
++	if (!manager) {
++		return -DWC_E_NO_MEMORY;
++	}
++
++	DWC_CIRCLEQ_INIT(&manager->allocations);
++	manager->mem_ctx = mem_ctx;
++	manager->num = 0;
++	manager->num_freed = 0;
++	manager->num_active = 0;
++	manager->total = 0;
++	manager->cur = 0;
++	manager->max = 0;
++
++	return 0;
++}
++
++void dwc_memory_debug_stop(void)
++{
++	struct allocation *a;
++
++	dwc_memory_debug_report();
++
++	DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
++		DWC_ERROR("Memory leaked from %s:%d\n", a->func, a->line);
++		free_allocation(a->ctx, a->addr, NULL, -1);
++	}
++
++	__DWC_FREE(manager->mem_ctx, manager);
++}
++
++void dwc_memory_debug_report(void)
++{
++	struct allocation *a;
++
++	DWC_PRINTF("\n\n\n----------------- Memory Debugging Report -----------------\n\n");
++	DWC_PRINTF("Num Allocations = %d\n", manager->num);
++	DWC_PRINTF("Freed = %d\n", manager->num_freed);
++	DWC_PRINTF("Active = %d\n", manager->num_active);
++	DWC_PRINTF("Current Memory Used = %d\n", manager->cur);
++	DWC_PRINTF("Total Memory Used = %d\n", manager->total);
++	DWC_PRINTF("Maximum Memory Used at Once = %d\n", manager->max);
++	DWC_PRINTF("Unfreed allocations:\n");
++
++	DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
++		DWC_PRINTF("    addr=%p, size=%d from %s:%d, DMA=%d\n",
++			   a->addr, a->size, a->func, a->line, a->dma);
++	}
++}
++
++/* The replacement functions */
++void *dwc_alloc_debug(void *mem_ctx, uint32_t size, char const *func, int line)
++{
++	void *addr = __DWC_ALLOC(mem_ctx, size);
++
++	if (!addr) {
++		return NULL;
++	}
++
++	if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
++		__DWC_FREE(mem_ctx, addr);
++		return NULL;
++	}
++
++	return addr;
++}
++
++void *dwc_alloc_atomic_debug(void *mem_ctx, uint32_t size, char const *func,
++			     int line)
++{
++	void *addr = __DWC_ALLOC_ATOMIC(mem_ctx, size);
++
++	if (!addr) {
++		return NULL;
++	}
++
++	if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
++		__DWC_FREE(mem_ctx, addr);
++		return NULL;
++	}
++
++	return addr;
++}
++
++void dwc_free_debug(void *mem_ctx, void *addr, char const *func, int line)
++{
++	free_allocation(mem_ctx, addr, func, line);
++	__DWC_FREE(mem_ctx, addr);
++}
++
++void *dwc_dma_alloc_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
++			  char const *func, int line)
++{
++	void *addr = __DWC_DMA_ALLOC(dma_ctx, size, dma_addr);
++
++	if (!addr) {
++		return NULL;
++	}
++
++	if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
++		__DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
++		return NULL;
++	}
++
++	return addr;
++}
++
++void *dwc_dma_alloc_atomic_debug(void *dma_ctx, uint32_t size,
++				 dwc_dma_t *dma_addr, char const *func, int line)
++{
++	void *addr = __DWC_DMA_ALLOC_ATOMIC(dma_ctx, size, dma_addr);
++
++	if (!addr) {
++		return NULL;
++	}
++
++	if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
++		__DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
++		return NULL;
++	}
++
++	return addr;
++}
++
++void dwc_dma_free_debug(void *dma_ctx, uint32_t size, void *virt_addr,
++			dwc_dma_t dma_addr, char const *func, int line)
++{
++	free_allocation(dma_ctx, virt_addr, func, line);
++	__DWC_DMA_FREE(dma_ctx, size, virt_addr, dma_addr);
++}
++
++#endif /* DWC_DEBUG_MEMORY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_modpow.c
+@@ -0,0 +1,636 @@
++/* Bignum routines adapted from PUTTY sources.  PuTTY copyright notice follows.
++ *
++ * PuTTY is copyright 1997-2007 Simon Tatham.
++ *
++ * Portions copyright Robert de Bath, Joris van Rantwijk, Delian
++ * Delchev, Andreas Schultz, Jeroen Massar, Wez Furlong, Nicolas Barry,
++ * Justin Bradford, Ben Harris, Malcolm Smith, Ahmad Khalifa, Markus
++ * Kuhn, and CORE SDI S.A.
++ *
++ * Permission is hereby granted, free of charge, to any person
++ * obtaining a copy of this software and associated documentation files
++ * (the "Software"), to deal in the Software without restriction,
++ * including without limitation the rights to use, copy, modify, merge,
++ * publish, distribute, sublicense, and/or sell copies of the Software,
++ * and to permit persons to whom the Software is furnished to do so,
++ * subject to the following conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
++ * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
++ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++ *
++ */
++#ifdef DWC_CRYPTOLIB
++
++#ifndef CONFIG_MACH_IPMATE
++
++#include "dwc_modpow.h"
++
++#define BIGNUM_INT_MASK  0xFFFFFFFFUL
++#define BIGNUM_TOP_BIT   0x80000000UL
++#define BIGNUM_INT_BITS  32
++
++
++static void *snmalloc(void *mem_ctx, size_t n, size_t size)
++{
++    void *p;
++    size *= n;
++    if (size == 0) size = 1;
++    p = dwc_alloc(mem_ctx, size);
++    return p;
++}
++
++#define snewn(ctx, n, type) ((type *)snmalloc((ctx), (n), sizeof(type)))
++#define sfree dwc_free
++
++/*
++ * Usage notes:
++ *  * Do not call the DIVMOD_WORD macro with expressions such as array
++ *    subscripts, as some implementations object to this (see below).
++ *  * Note that none of the division methods below will cope if the
++ *    quotient won't fit into BIGNUM_INT_BITS. Callers should be careful
++ *    to avoid this case.
++ *    If this condition occurs, in the case of the x86 DIV instruction,
++ *    an overflow exception will occur, which (according to a correspondent)
++ *    will manifest on Windows as something like
++ *      0xC0000095: Integer overflow
++ *    The C variant won't give the right answer, either.
++ */
++
++#define MUL_WORD(w1, w2) ((BignumDblInt)w1 * w2)
++
++#if defined __GNUC__ && defined __i386__
++#define DIVMOD_WORD(q, r, hi, lo, w) \
++    __asm__("div %2" : \
++	    "=d" (r), "=a" (q) : \
++	    "r" (w), "d" (hi), "a" (lo))
++#else
++#define DIVMOD_WORD(q, r, hi, lo, w) do { \
++    BignumDblInt n = (((BignumDblInt)hi) << BIGNUM_INT_BITS) | lo; \
++    q = n / w; \
++    r = n % w; \
++} while (0)
++#endif
++
++//    q = n / w;
++//    r = n % w;
++
++#define BIGNUM_INT_BYTES (BIGNUM_INT_BITS / 8)
++
++#define BIGNUM_INTERNAL
++
++static Bignum newbn(void *mem_ctx, int length)
++{
++    Bignum b = snewn(mem_ctx, length + 1, BignumInt);
++    //if (!b)
++    //abort();		       /* FIXME */
++    DWC_MEMSET(b, 0, (length + 1) * sizeof(*b));
++    b[0] = length;
++    return b;
++}
++
++void freebn(void *mem_ctx, Bignum b)
++{
++    /*
++     * Burn the evidence, just in case.
++     */
++    DWC_MEMSET(b, 0, sizeof(b[0]) * (b[0] + 1));
++    sfree(mem_ctx, b);
++}
++
++/*
++ * Compute c = a * b.
++ * Input is in the first len words of a and b.
++ * Result is returned in the first 2*len words of c.
++ */
++static void internal_mul(BignumInt *a, BignumInt *b,
++			 BignumInt *c, int len)
++{
++    int i, j;
++    BignumDblInt t;
++
++    for (j = 0; j < 2 * len; j++)
++	c[j] = 0;
++
++    for (i = len - 1; i >= 0; i--) {
++	t = 0;
++	for (j = len - 1; j >= 0; j--) {
++	    t += MUL_WORD(a[i], (BignumDblInt) b[j]);
++	    t += (BignumDblInt) c[i + j + 1];
++	    c[i + j + 1] = (BignumInt) t;
++	    t = t >> BIGNUM_INT_BITS;
++	}
++	c[i] = (BignumInt) t;
++    }
++}
++
++static void internal_add_shifted(BignumInt *number,
++				 unsigned n, int shift)
++{
++    int word = 1 + (shift / BIGNUM_INT_BITS);
++    int bshift = shift % BIGNUM_INT_BITS;
++    BignumDblInt addend;
++
++    addend = (BignumDblInt)n << bshift;
++
++    while (addend) {
++	addend += number[word];
++	number[word] = (BignumInt) addend & BIGNUM_INT_MASK;
++	addend >>= BIGNUM_INT_BITS;
++	word++;
++    }
++}
++
++/*
++ * Compute a = a % m.
++ * Input in first alen words of a and first mlen words of m.
++ * Output in first alen words of a
++ * (of which first alen-mlen words will be zero).
++ * The MSW of m MUST have its high bit set.
++ * Quotient is accumulated in the `quotient' array, which is a Bignum
++ * rather than the internal bigendian format. Quotient parts are shifted
++ * left by `qshift' before adding into quot.
++ */
++static void internal_mod(BignumInt *a, int alen,
++			 BignumInt *m, int mlen,
++			 BignumInt *quot, int qshift)
++{
++    BignumInt m0, m1;
++    unsigned int h;
++    int i, k;
++
++    m0 = m[0];
++    if (mlen > 1)
++	m1 = m[1];
++    else
++	m1 = 0;
++
++    for (i = 0; i <= alen - mlen; i++) {
++	BignumDblInt t;
++	unsigned int q, r, c, ai1;
++
++	if (i == 0) {
++	    h = 0;
++	} else {
++	    h = a[i - 1];
++	    a[i - 1] = 0;
++	}
++
++	if (i == alen - 1)
++	    ai1 = 0;
++	else
++	    ai1 = a[i + 1];
++
++	/* Find q = h:a[i] / m0 */
++	if (h >= m0) {
++	    /*
++	     * Special case.
++	     *
++	     * To illustrate it, suppose a BignumInt is 8 bits, and
++	     * we are dividing (say) A1:23:45:67 by A1:B2:C3. Then
++	     * our initial division will be 0xA123 / 0xA1, which
++	     * will give a quotient of 0x100 and a divide overflow.
++	     * However, the invariants in this division algorithm
++	     * are not violated, since the full number A1:23:... is
++	     * _less_ than the quotient prefix A1:B2:... and so the
++	     * following correction loop would have sorted it out.
++	     *
++	     * In this situation we set q to be the largest
++	     * quotient we _can_ stomach (0xFF, of course).
++	     */
++	    q = BIGNUM_INT_MASK;
++	} else {
++	    /* Macro doesn't want an array subscript expression passed
++	     * into it (see definition), so use a temporary. */
++	    BignumInt tmplo = a[i];
++	    DIVMOD_WORD(q, r, h, tmplo, m0);
++
++	    /* Refine our estimate of q by looking at
++	     h:a[i]:a[i+1] / m0:m1 */
++	    t = MUL_WORD(m1, q);
++	    if (t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) {
++		q--;
++		t -= m1;
++		r = (r + m0) & BIGNUM_INT_MASK;     /* overflow? */
++		if (r >= (BignumDblInt) m0 &&
++		    t > ((BignumDblInt) r << BIGNUM_INT_BITS) + ai1) q--;
++	    }
++	}
++
++	/* Subtract q * m from a[i...] */
++	c = 0;
++	for (k = mlen - 1; k >= 0; k--) {
++	    t = MUL_WORD(q, m[k]);
++	    t += c;
++	    c = (unsigned)(t >> BIGNUM_INT_BITS);
++	    if ((BignumInt) t > a[i + k])
++		c++;
++	    a[i + k] -= (BignumInt) t;
++	}
++
++	/* Add back m in case of borrow */
++	if (c != h) {
++	    t = 0;
++	    for (k = mlen - 1; k >= 0; k--) {
++		t += m[k];
++		t += a[i + k];
++		a[i + k] = (BignumInt) t;
++		t = t >> BIGNUM_INT_BITS;
++	    }
++	    q--;
++	}
++	if (quot)
++	    internal_add_shifted(quot, q, qshift + BIGNUM_INT_BITS * (alen - mlen - i));
++    }
++}
++
++/*
++ * Compute p % mod.
++ * The most significant word of mod MUST be non-zero.
++ * We assume that the result array is the same size as the mod array.
++ * We optionally write out a quotient if `quotient' is non-NULL.
++ * We can avoid writing out the result if `result' is NULL.
++ */
++void bigdivmod(void *mem_ctx, Bignum p, Bignum mod, Bignum result, Bignum quotient)
++{
++    BignumInt *n, *m;
++    int mshift;
++    int plen, mlen, i, j;
++
++    /* Allocate m of size mlen, copy mod to m */
++    /* We use big endian internally */
++    mlen = mod[0];
++    m = snewn(mem_ctx, mlen, BignumInt);
++    //if (!m)
++    //abort();		       /* FIXME */
++    for (j = 0; j < mlen; j++)
++	m[j] = mod[mod[0] - j];
++
++    /* Shift m left to make msb bit set */
++    for (mshift = 0; mshift < BIGNUM_INT_BITS-1; mshift++)
++	if ((m[0] << mshift) & BIGNUM_TOP_BIT)
++	    break;
++    if (mshift) {
++	for (i = 0; i < mlen - 1; i++)
++	    m[i] = (m[i] << mshift) | (m[i + 1] >> (BIGNUM_INT_BITS - mshift));
++	m[mlen - 1] = m[mlen - 1] << mshift;
++    }
++
++    plen = p[0];
++    /* Ensure plen > mlen */
++    if (plen <= mlen)
++	plen = mlen + 1;
++
++    /* Allocate n of size plen, copy p to n */
++    n = snewn(mem_ctx, plen, BignumInt);
++    //if (!n)
++    //abort();		       /* FIXME */
++    for (j = 0; j < plen; j++)
++	n[j] = 0;
++    for (j = 1; j <= (int)p[0]; j++)
++	n[plen - j] = p[j];
++
++    /* Main computation */
++    internal_mod(n, plen, m, mlen, quotient, mshift);
++
++    /* Fixup result in case the modulus was shifted */
++    if (mshift) {
++	for (i = plen - mlen - 1; i < plen - 1; i++)
++	    n[i] = (n[i] << mshift) | (n[i + 1] >> (BIGNUM_INT_BITS - mshift));
++	n[plen - 1] = n[plen - 1] << mshift;
++	internal_mod(n, plen, m, mlen, quotient, 0);
++	for (i = plen - 1; i >= plen - mlen; i--)
++	    n[i] = (n[i] >> mshift) | (n[i - 1] << (BIGNUM_INT_BITS - mshift));
++    }
++
++    /* Copy result to buffer */
++    if (result) {
++	for (i = 1; i <= (int)result[0]; i++) {
++	    int j = plen - i;
++	    result[i] = j >= 0 ? n[j] : 0;
++	}
++    }
++
++    /* Free temporary arrays */
++    for (i = 0; i < mlen; i++)
++	m[i] = 0;
++    sfree(mem_ctx, m);
++    for (i = 0; i < plen; i++)
++	n[i] = 0;
++    sfree(mem_ctx, n);
++}
++
++/*
++ * Simple remainder.
++ */
++Bignum bigmod(void *mem_ctx, Bignum a, Bignum b)
++{
++    Bignum r = newbn(mem_ctx, b[0]);
++    bigdivmod(mem_ctx, a, b, r, NULL);
++    return r;
++}
++
++/*
++ * Compute (base ^ exp) % mod.
++ */
++Bignum dwc_modpow(void *mem_ctx, Bignum base_in, Bignum exp, Bignum mod)
++{
++    BignumInt *a, *b, *n, *m;
++    int mshift;
++    int mlen, i, j;
++    Bignum base, result;
++
++    /*
++     * The most significant word of mod needs to be non-zero. It
++     * should already be, but let's make sure.
++     */
++    //assert(mod[mod[0]] != 0);
++
++    /*
++     * Make sure the base is smaller than the modulus, by reducing
++     * it modulo the modulus if not.
++     */
++    base = bigmod(mem_ctx, base_in, mod);
++
++    /* Allocate m of size mlen, copy mod to m */
++    /* We use big endian internally */
++    mlen = mod[0];
++    m = snewn(mem_ctx, mlen, BignumInt);
++    //if (!m)
++    //abort();		       /* FIXME */
++    for (j = 0; j < mlen; j++)
++	m[j] = mod[mod[0] - j];
++
++    /* Shift m left to make msb bit set */
++    for (mshift = 0; mshift < BIGNUM_INT_BITS - 1; mshift++)
++	if ((m[0] << mshift) & BIGNUM_TOP_BIT)
++	    break;
++    if (mshift) {
++	for (i = 0; i < mlen - 1; i++)
++	    m[i] =
++		(m[i] << mshift) | (m[i + 1] >>
++				    (BIGNUM_INT_BITS - mshift));
++	m[mlen - 1] = m[mlen - 1] << mshift;
++    }
++
++    /* Allocate n of size mlen, copy base to n */
++    n = snewn(mem_ctx, mlen, BignumInt);
++    //if (!n)
++    //abort();		       /* FIXME */
++    i = mlen - base[0];
++    for (j = 0; j < i; j++)
++	n[j] = 0;
++    for (j = 0; j < base[0]; j++)
++	n[i + j] = base[base[0] - j];
++
++    /* Allocate a and b of size 2*mlen. Set a = 1 */
++    a = snewn(mem_ctx, 2 * mlen, BignumInt);
++    //if (!a)
++    //abort();		       /* FIXME */
++    b = snewn(mem_ctx, 2 * mlen, BignumInt);
++    //if (!b)
++    //abort();		       /* FIXME */
++    for (i = 0; i < 2 * mlen; i++)
++	a[i] = 0;
++    a[2 * mlen - 1] = 1;
++
++    /* Skip leading zero bits of exp. */
++    i = 0;
++    j = BIGNUM_INT_BITS - 1;
++    while (i < exp[0] && (exp[exp[0] - i] & (1 << j)) == 0) {
++	j--;
++	if (j < 0) {
++	    i++;
++	    j = BIGNUM_INT_BITS - 1;
++	}
++    }
++
++    /* Main computation */
++    while (i < exp[0]) {
++	while (j >= 0) {
++	    internal_mul(a + mlen, a + mlen, b, mlen);
++	    internal_mod(b, mlen * 2, m, mlen, NULL, 0);
++	    if ((exp[exp[0] - i] & (1 << j)) != 0) {
++		internal_mul(b + mlen, n, a, mlen);
++		internal_mod(a, mlen * 2, m, mlen, NULL, 0);
++	    } else {
++		BignumInt *t;
++		t = a;
++		a = b;
++		b = t;
++	    }
++	    j--;
++	}
++	i++;
++	j = BIGNUM_INT_BITS - 1;
++    }
++
++    /* Fixup result in case the modulus was shifted */
++    if (mshift) {
++	for (i = mlen - 1; i < 2 * mlen - 1; i++)
++	    a[i] =
++		(a[i] << mshift) | (a[i + 1] >>
++				    (BIGNUM_INT_BITS - mshift));
++	a[2 * mlen - 1] = a[2 * mlen - 1] << mshift;
++	internal_mod(a, mlen * 2, m, mlen, NULL, 0);
++	for (i = 2 * mlen - 1; i >= mlen; i--)
++	    a[i] =
++		(a[i] >> mshift) | (a[i - 1] <<
++				    (BIGNUM_INT_BITS - mshift));
++    }
++
++    /* Copy result to buffer */
++    result = newbn(mem_ctx, mod[0]);
++    for (i = 0; i < mlen; i++)
++	result[result[0] - i] = a[i + mlen];
++    while (result[0] > 1 && result[result[0]] == 0)
++	result[0]--;
++
++    /* Free temporary arrays */
++    for (i = 0; i < 2 * mlen; i++)
++	a[i] = 0;
++    sfree(mem_ctx, a);
++    for (i = 0; i < 2 * mlen; i++)
++	b[i] = 0;
++    sfree(mem_ctx, b);
++    for (i = 0; i < mlen; i++)
++	m[i] = 0;
++    sfree(mem_ctx, m);
++    for (i = 0; i < mlen; i++)
++	n[i] = 0;
++    sfree(mem_ctx, n);
++
++    freebn(mem_ctx, base);
++
++    return result;
++}
++
++
++#ifdef UNITTEST
++
++static __u32 dh_p[] = {
++	96,
++	0xFFFFFFFF,
++	0xFFFFFFFF,
++	0xA93AD2CA,
++	0x4B82D120,
++	0xE0FD108E,
++	0x43DB5BFC,
++	0x74E5AB31,
++	0x08E24FA0,
++	0xBAD946E2,
++	0x770988C0,
++	0x7A615D6C,
++	0xBBE11757,
++	0x177B200C,
++	0x521F2B18,
++	0x3EC86A64,
++	0xD8760273,
++	0xD98A0864,
++	0xF12FFA06,
++	0x1AD2EE6B,
++	0xCEE3D226,
++	0x4A25619D,
++	0x1E8C94E0,
++	0xDB0933D7,
++	0xABF5AE8C,
++	0xA6E1E4C7,
++	0xB3970F85,
++	0x5D060C7D,
++	0x8AEA7157,
++	0x58DBEF0A,
++	0xECFB8504,
++	0xDF1CBA64,
++	0xA85521AB,
++	0x04507A33,
++	0xAD33170D,
++	0x8AAAC42D,
++	0x15728E5A,
++	0x98FA0510,
++	0x15D22618,
++	0xEA956AE5,
++	0x3995497C,
++	0x95581718,
++	0xDE2BCBF6,
++	0x6F4C52C9,
++	0xB5C55DF0,
++	0xEC07A28F,
++	0x9B2783A2,
++	0x180E8603,
++	0xE39E772C,
++	0x2E36CE3B,
++	0x32905E46,
++	0xCA18217C,
++	0xF1746C08,
++	0x4ABC9804,
++	0x670C354E,
++	0x7096966D,
++	0x9ED52907,
++	0x208552BB,
++	0x1C62F356,
++	0xDCA3AD96,
++	0x83655D23,
++	0xFD24CF5F,
++	0x69163FA8,
++	0x1C55D39A,
++	0x98DA4836,
++	0xA163BF05,
++	0xC2007CB8,
++	0xECE45B3D,
++	0x49286651,
++	0x7C4B1FE6,
++	0xAE9F2411,
++	0x5A899FA5,
++	0xEE386BFB,
++	0xF406B7ED,
++	0x0BFF5CB6,
++	0xA637ED6B,
++	0xF44C42E9,
++	0x625E7EC6,
++	0xE485B576,
++	0x6D51C245,
++	0x4FE1356D,
++	0xF25F1437,
++	0x302B0A6D,
++	0xCD3A431B,
++	0xEF9519B3,
++	0x8E3404DD,
++	0x514A0879,
++	0x3B139B22,
++	0x020BBEA6,
++	0x8A67CC74,
++	0x29024E08,
++	0x80DC1CD1,
++	0xC4C6628B,
++	0x2168C234,
++	0xC90FDAA2,
++	0xFFFFFFFF,
++	0xFFFFFFFF,
++};
++
++static __u32 dh_a[] = {
++	8,
++	0xdf367516,
++	0x86459caa,
++	0xe2d459a4,
++	0xd910dae0,
++	0x8a8b5e37,
++	0x67ab31c6,
++	0xf0b55ea9,
++	0x440051d6,
++};
++
++static __u32 dh_b[] = {
++	8,
++	0xded92656,
++	0xe07a048a,
++	0x6fa452cd,
++	0x2df89d30,
++	0xc75f1b0f,
++	0x8ce3578f,
++	0x7980a324,
++	0x5daec786,
++};
++
++static __u32 dh_g[] = {
++	1,
++	2,
++};
++
++int main(void)
++{
++	int i;
++	__u32 *k;
++	k = dwc_modpow(NULL, dh_g, dh_a, dh_p);
++
++	printf("\n\n");
++	for (i=0; i<k[0]; i++) {
++		__u32 word32 = k[k[0] - i];
++		__u16 l = word32 & 0xffff;
++		__u16 m = (word32 & 0xffff0000) >> 16;
++		printf("%04x %04x ", m, l);
++		if (!((i + 1)%13)) printf("\n");
++	}
++	printf("\n\n");
++
++	if ((k[0] == 0x60) && (k[1] == 0x28e490e5) && (k[0x60] == 0x5a0d3d4e)) {
++		printf("PASS\n\n");
++	}
++	else {
++		printf("FAIL\n\n");
++	}
++
++}
++
++#endif /* UNITTEST */
++
++#endif /* CONFIG_MACH_IPMATE */
++
++#endif /*DWC_CRYPTOLIB */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_modpow.h
+@@ -0,0 +1,34 @@
++/*
++ * dwc_modpow.h
++ * See dwc_modpow.c for license and changes
++ */
++#ifndef _DWC_MODPOW_H
++#define _DWC_MODPOW_H
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "dwc_os.h"
++
++/** @file
++ *
++ * This file defines the module exponentiation function which is only used
++ * internally by the DWC UWB modules for calculation of PKs during numeric
++ * association.  The routine is taken from the PUTTY, an open source terminal
++ * emulator.  The PUTTY License is preserved in the dwc_modpow.c file.
++ *
++ */
++
++typedef uint32_t BignumInt;
++typedef uint64_t BignumDblInt;
++typedef BignumInt *Bignum;
++
++/* Compute modular exponentiaion */
++extern Bignum dwc_modpow(void *mem_ctx, Bignum base_in, Bignum exp, Bignum mod);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* _LINUX_BIGNUM_H */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_notifier.c
+@@ -0,0 +1,319 @@
++#ifdef DWC_NOTIFYLIB
++
++#include "dwc_notifier.h"
++#include "dwc_list.h"
++
++typedef struct dwc_observer {
++	void *observer;
++	dwc_notifier_callback_t callback;
++	void *data;
++	char *notification;
++	DWC_CIRCLEQ_ENTRY(dwc_observer) list_entry;
++} observer_t;
++
++DWC_CIRCLEQ_HEAD(observer_queue, dwc_observer);
++
++typedef struct dwc_notifier {
++	void *mem_ctx;
++	void *object;
++	struct observer_queue observers;
++	DWC_CIRCLEQ_ENTRY(dwc_notifier) list_entry;
++} notifier_t;
++
++DWC_CIRCLEQ_HEAD(notifier_queue, dwc_notifier);
++
++typedef struct manager {
++	void *mem_ctx;
++	void *wkq_ctx;
++	dwc_workq_t *wq;
++//	dwc_mutex_t *mutex;
++	struct notifier_queue notifiers;
++} manager_t;
++
++static manager_t *manager = NULL;
++
++static int create_manager(void *mem_ctx, void *wkq_ctx)
++{
++	manager = dwc_alloc(mem_ctx, sizeof(manager_t));
++	if (!manager) {
++		return -DWC_E_NO_MEMORY;
++	}
++
++	DWC_CIRCLEQ_INIT(&manager->notifiers);
++
++	manager->wq = dwc_workq_alloc(wkq_ctx, "DWC Notification WorkQ");
++	if (!manager->wq) {
++		return -DWC_E_NO_MEMORY;
++	}
++
++	return 0;
++}
++
++static void free_manager(void)
++{
++	dwc_workq_free(manager->wq);
++
++	/* All notifiers must have unregistered themselves before this module
++	 * can be removed.  Hitting this assertion indicates a programmer
++	 * error. */
++	DWC_ASSERT(DWC_CIRCLEQ_EMPTY(&manager->notifiers),
++		   "Notification manager being freed before all notifiers have been removed");
++	dwc_free(manager->mem_ctx, manager);
++}
++
++#ifdef DEBUG
++static void dump_manager(void)
++{
++	notifier_t *n;
++	observer_t *o;
++
++	DWC_ASSERT(manager, "Notification manager not found");
++
++	DWC_DEBUG("List of all notifiers and observers:\n");
++	DWC_CIRCLEQ_FOREACH(n, &manager->notifiers, list_entry) {
++		DWC_DEBUG("Notifier %p has observers:\n", n->object);
++		DWC_CIRCLEQ_FOREACH(o, &n->observers, list_entry) {
++			DWC_DEBUG("    %p watching %s\n", o->observer, o->notification);
++		}
++	}
++}
++#else
++#define dump_manager(...)
++#endif
++
++static observer_t *alloc_observer(void *mem_ctx, void *observer, char *notification,
++				  dwc_notifier_callback_t callback, void *data)
++{
++	observer_t *new_observer = dwc_alloc(mem_ctx, sizeof(observer_t));
++
++	if (!new_observer) {
++		return NULL;
++	}
++
++	DWC_CIRCLEQ_INIT_ENTRY(new_observer, list_entry);
++	new_observer->observer = observer;
++	new_observer->notification = notification;
++	new_observer->callback = callback;
++	new_observer->data = data;
++	return new_observer;
++}
++
++static void free_observer(void *mem_ctx, observer_t *observer)
++{
++	dwc_free(mem_ctx, observer);
++}
++
++static notifier_t *alloc_notifier(void *mem_ctx, void *object)
++{
++	notifier_t *notifier;
++
++	if (!object) {
++		return NULL;
++	}
++
++	notifier = dwc_alloc(mem_ctx, sizeof(notifier_t));
++	if (!notifier) {
++		return NULL;
++	}
++
++	DWC_CIRCLEQ_INIT(&notifier->observers);
++	DWC_CIRCLEQ_INIT_ENTRY(notifier, list_entry);
++
++	notifier->mem_ctx = mem_ctx;
++	notifier->object = object;
++	return notifier;
++}
++
++static void free_notifier(notifier_t *notifier)
++{
++	observer_t *observer;
++
++	DWC_CIRCLEQ_FOREACH(observer, &notifier->observers, list_entry) {
++		free_observer(notifier->mem_ctx, observer);
++	}
++
++	dwc_free(notifier->mem_ctx, notifier);
++}
++
++static notifier_t *find_notifier(void *object)
++{
++	notifier_t *notifier;
++
++	DWC_ASSERT(manager, "Notification manager not found");
++
++	if (!object) {
++		return NULL;
++	}
++
++	DWC_CIRCLEQ_FOREACH(notifier, &manager->notifiers, list_entry) {
++		if (notifier->object == object) {
++			return notifier;
++		}
++	}
++
++	return NULL;
++}
++
++int dwc_alloc_notification_manager(void *mem_ctx, void *wkq_ctx)
++{
++	return create_manager(mem_ctx, wkq_ctx);
++}
++
++void dwc_free_notification_manager(void)
++{
++	free_manager();
++}
++
++dwc_notifier_t *dwc_register_notifier(void *mem_ctx, void *object)
++{
++	notifier_t *notifier;
++
++	DWC_ASSERT(manager, "Notification manager not found");
++
++	notifier = find_notifier(object);
++	if (notifier) {
++		DWC_ERROR("Notifier %p is already registered\n", object);
++		return NULL;
++	}
++
++	notifier = alloc_notifier(mem_ctx, object);
++	if (!notifier) {
++		return NULL;
++	}
++
++	DWC_CIRCLEQ_INSERT_TAIL(&manager->notifiers, notifier, list_entry);
++
++	DWC_INFO("Notifier %p registered", object);
++	dump_manager();
++
++	return notifier;
++}
++
++void dwc_unregister_notifier(dwc_notifier_t *notifier)
++{
++	DWC_ASSERT(manager, "Notification manager not found");
++
++	if (!DWC_CIRCLEQ_EMPTY(&notifier->observers)) {
++		observer_t *o;
++
++		DWC_ERROR("Notifier %p has active observers when removing\n", notifier->object);
++		DWC_CIRCLEQ_FOREACH(o, &notifier->observers, list_entry) {
++			DWC_DEBUGC("    %p watching %s\n", o->observer, o->notification);
++		}
++
++		DWC_ASSERT(DWC_CIRCLEQ_EMPTY(&notifier->observers),
++			   "Notifier %p has active observers when removing", notifier);
++	}
++
++	DWC_CIRCLEQ_REMOVE_INIT(&manager->notifiers, notifier, list_entry);
++	free_notifier(notifier);
++
++	DWC_INFO("Notifier unregistered");
++	dump_manager();
++}
++
++/* Add an observer to observe the notifier for a particular state, event, or notification. */
++int dwc_add_observer(void *observer, void *object, char *notification,
++		     dwc_notifier_callback_t callback, void *data)
++{
++	notifier_t *notifier = find_notifier(object);
++	observer_t *new_observer;
++
++	if (!notifier) {
++		DWC_ERROR("Notifier %p is not found when adding observer\n", object);
++		return -DWC_E_INVALID;
++	}
++
++	new_observer = alloc_observer(notifier->mem_ctx, observer, notification, callback, data);
++	if (!new_observer) {
++		return -DWC_E_NO_MEMORY;
++	}
++
++	DWC_CIRCLEQ_INSERT_TAIL(&notifier->observers, new_observer, list_entry);
++
++	DWC_INFO("Added observer %p to notifier %p observing notification %s, callback=%p, data=%p",
++		 observer, object, notification, callback, data);
++
++	dump_manager();
++	return 0;
++}
++
++int dwc_remove_observer(void *observer)
++{
++	notifier_t *n;
++
++	DWC_ASSERT(manager, "Notification manager not found");
++
++	DWC_CIRCLEQ_FOREACH(n, &manager->notifiers, list_entry) {
++		observer_t *o;
++		observer_t *o2;
++
++		DWC_CIRCLEQ_FOREACH_SAFE(o, o2, &n->observers, list_entry) {
++			if (o->observer == observer) {
++				DWC_CIRCLEQ_REMOVE_INIT(&n->observers, o, list_entry);
++				DWC_INFO("Removing observer %p from notifier %p watching notification %s:",
++					 o->observer, n->object, o->notification);
++				free_observer(n->mem_ctx, o);
++			}
++		}
++	}
++
++	dump_manager();
++	return 0;
++}
++
++typedef struct callback_data {
++	void *mem_ctx;
++	dwc_notifier_callback_t cb;
++	void *observer;
++	void *data;
++	void *object;
++	char *notification;
++	void *notification_data;
++} cb_data_t;
++
++static void cb_task(void *data)
++{
++	cb_data_t *cb = (cb_data_t *)data;
++
++	cb->cb(cb->object, cb->notification, cb->observer, cb->notification_data, cb->data);
++	dwc_free(cb->mem_ctx, cb);
++}
++
++void dwc_notify(dwc_notifier_t *notifier, char *notification, void *notification_data)
++{
++	observer_t *o;
++
++	DWC_ASSERT(manager, "Notification manager not found");
++
++	DWC_CIRCLEQ_FOREACH(o, &notifier->observers, list_entry) {
++		int len = DWC_STRLEN(notification);
++
++		if (DWC_STRLEN(o->notification) != len) {
++			continue;
++		}
++
++		if (DWC_STRNCMP(o->notification, notification, len) == 0) {
++			cb_data_t *cb_data = dwc_alloc(notifier->mem_ctx, sizeof(cb_data_t));
++
++			if (!cb_data) {
++				DWC_ERROR("Failed to allocate callback data\n");
++				return;
++			}
++
++			cb_data->mem_ctx = notifier->mem_ctx;
++			cb_data->cb = o->callback;
++			cb_data->observer = o->observer;
++			cb_data->data = o->data;
++			cb_data->object = notifier->object;
++			cb_data->notification = notification;
++			cb_data->notification_data = notification_data;
++			DWC_DEBUGC("Observer found %p for notification %s\n", o->observer, notification);
++			DWC_WORKQ_SCHEDULE(manager->wq, cb_task, cb_data,
++					   "Notify callback from %p for Notification %s, to observer %p",
++					   cb_data->object, notification, cb_data->observer);
++		}
++	}
++}
++
++#endif	/* DWC_NOTIFYLIB */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_notifier.h
+@@ -0,0 +1,122 @@
++
++#ifndef __DWC_NOTIFIER_H__
++#define __DWC_NOTIFIER_H__
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#include "dwc_os.h"
++
++/** @file
++ *
++ * A simple implementation of the Observer pattern.  Any "module" can
++ * register as an observer or notifier.  The notion of "module" is abstract and
++ * can mean anything used to identify either an observer or notifier.  Usually
++ * it will be a pointer to a data structure which contains some state, ie an
++ * object.
++ *
++ * Before any notifiers can be added, the global notification manager must be
++ * brought up with dwc_alloc_notification_manager().
++ * dwc_free_notification_manager() will bring it down and free all resources.
++ * These would typically be called upon module load and unload.  The
++ * notification manager is a single global instance that handles all registered
++ * observable modules and observers so this should be done only once.
++ *
++ * A module can be observable by using Notifications to publicize some general
++ * information about it's state or operation.  It does not care who listens, or
++ * even if anyone listens, or what they do with the information.  The observable
++ * modules do not need to know any information about it's observers or their
++ * interface, or their state or data.
++ *
++ * Any module can register to emit Notifications.  It should publish a list of
++ * notifications that it can emit and their behavior, such as when they will get
++ * triggered, and what information will be provided to the observer.  Then it
++ * should register itself as an observable module. See dwc_register_notifier().
++ *
++ * Any module can observe any observable, registered module, provided it has a
++ * handle to the other module and knows what notifications to observe.  See
++ * dwc_add_observer().
++ *
++ * A function of type dwc_notifier_callback_t is called whenever a notification
++ * is triggered with one or more observers observing it.  This function is
++ * called in it's own process so it may sleep or block if needed.  It is
++ * guaranteed to be called sometime after the notification has occurred and will
++ * be called once per each time the notification is triggered.  It will NOT be
++ * called in the same process context used to trigger the notification.
++ *
++ * @section Limitiations
++ *
++ * Keep in mind that Notifications that can be triggered in rapid sucession may
++ * schedule too many processes too handle.  Be aware of this limitation when
++ * designing to use notifications, and only add notifications for appropriate
++ * observable information.
++ *
++ * Also Notification callbacks are not synchronous.  If you need to synchronize
++ * the behavior between module/observer you must use other means.  And perhaps
++ * that will mean Notifications are not the proper solution.
++ */
++
++struct dwc_notifier;
++typedef struct dwc_notifier dwc_notifier_t;
++
++/** The callback function must be of this type.
++ *
++ * @param object This is the object that is being observed.
++ * @param notification This is the notification that was triggered.
++ * @param observer This is the observer
++ * @param notification_data This is notification-specific data that the notifier
++ * has included in this notification.  The value of this should be published in
++ * the documentation of the observable module with the notifications.
++ * @param user_data This is any custom data that the observer provided when
++ * adding itself as an observer to the notification. */
++typedef void (*dwc_notifier_callback_t)(void *object, char *notification, void *observer,
++					void *notification_data, void *user_data);
++
++/** Brings up the notification manager. */
++extern int dwc_alloc_notification_manager(void *mem_ctx, void *wkq_ctx);
++/** Brings down the notification manager. */
++extern void dwc_free_notification_manager(void);
++
++/** This function registers an observable module.  A dwc_notifier_t object is
++ * returned to the observable module.  This is an opaque object that is used by
++ * the observable module to trigger notifications.  This object should only be
++ * accessible to functions that are authorized to trigger notifications for this
++ * module.  Observers do not need this object. */
++extern dwc_notifier_t *dwc_register_notifier(void *mem_ctx, void *object);
++
++/** This function unregisters an observable module.  All observers have to be
++ * removed prior to unregistration. */
++extern void dwc_unregister_notifier(dwc_notifier_t *notifier);
++
++/** Add a module as an observer to the observable module.  The observable module
++ * needs to have previously registered with the notification manager.
++ *
++ * @param observer The observer module
++ * @param object The module to observe
++ * @param notification The notification to observe
++ * @param callback The callback function to call
++ * @param user_data Any additional user data to pass into the callback function */
++extern int dwc_add_observer(void *observer, void *object, char *notification,
++			    dwc_notifier_callback_t callback, void *user_data);
++
++/** Removes the specified observer from all notifications that it is currently
++ * observing. */
++extern int dwc_remove_observer(void *observer);
++
++/** This function triggers a Notification.  It should be called by the
++ * observable module, or any module or library which the observable module
++ * allows to trigger notification on it's behalf.  Such as the dwc_cc_t.
++ *
++ * dwc_notify is a non-blocking function.  Callbacks are scheduled called in
++ * their own process context for each trigger.  Callbacks can be blocking.
++ * dwc_notify can be called from interrupt context if needed.
++ *
++ */
++void dwc_notify(dwc_notifier_t *notifier, char *notification, void *notification_data);
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* __DWC_NOTIFIER_H__ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/dwc_os.h
+@@ -0,0 +1,1276 @@
++/* =========================================================================
++ * $File: //dwh/usb_iip/dev/software/dwc_common_port_2/dwc_os.h $
++ * $Revision: #14 $
++ * $Date: 2010/11/04 $
++ * $Change: 1621695 $
++ *
++ * Synopsys Portability Library Software and documentation
++ * (hereinafter, "Software") is an Unsupported proprietary work of
++ * Synopsys, Inc. unless otherwise expressly agreed to in writing
++ * between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product
++ * under any End User Software License Agreement or Agreement for
++ * Licensed Product with Synopsys or any supplement thereto. You are
++ * permitted to use and redistribute this Software in source and binary
++ * forms, with or without modification, provided that redistributions
++ * of source code must retain this notice. You may not view, use,
++ * disclose, copy or distribute this file or any information contained
++ * herein except pursuant to this license grant from Synopsys. If you
++ * do not agree with this notice, including the disclaimer below, then
++ * you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
++ * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
++ * FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL
++ * SYNOPSYS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
++ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================= */
++#ifndef _DWC_OS_H_
++#define _DWC_OS_H_
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/** @file
++ *
++ * DWC portability library, low level os-wrapper functions
++ *
++ */
++
++/* These basic types need to be defined by some OS header file or custom header
++ * file for your specific target architecture.
++ *
++ * uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t, uint64_t, int64_t
++ *
++ * Any custom or alternate header file must be added and enabled here.
++ */
++
++#ifdef DWC_LINUX
++# include <linux/types.h>
++# ifdef CONFIG_DEBUG_MUTEXES
++#  include <linux/mutex.h>
++# endif
++# include <linux/spinlock.h>
++# include <linux/errno.h>
++# include <stdarg.h>
++#endif
++
++#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++# include <os_dep.h>
++#endif
++
++
++/** @name Primitive Types and Values */
++
++/** We define a boolean type for consistency.  Can be either YES or NO */
++typedef uint8_t dwc_bool_t;
++#define YES  1
++#define NO   0
++
++#ifdef DWC_LINUX
++
++/** @name Error Codes */
++#define DWC_E_INVALID		EINVAL
++#define DWC_E_NO_MEMORY		ENOMEM
++#define DWC_E_NO_DEVICE		ENODEV
++#define DWC_E_NOT_SUPPORTED	EOPNOTSUPP
++#define DWC_E_TIMEOUT		ETIMEDOUT
++#define DWC_E_BUSY		EBUSY
++#define DWC_E_AGAIN		EAGAIN
++#define DWC_E_RESTART		ERESTART
++#define DWC_E_ABORT		ECONNABORTED
++#define DWC_E_SHUTDOWN		ESHUTDOWN
++#define DWC_E_NO_DATA		ENODATA
++#define DWC_E_DISCONNECT	ECONNRESET
++#define DWC_E_UNKNOWN		EINVAL
++#define DWC_E_NO_STREAM_RES	ENOSR
++#define DWC_E_COMMUNICATION	ECOMM
++#define DWC_E_OVERFLOW		EOVERFLOW
++#define DWC_E_PROTOCOL		EPROTO
++#define DWC_E_IN_PROGRESS	EINPROGRESS
++#define DWC_E_PIPE		EPIPE
++#define DWC_E_IO		EIO
++#define DWC_E_NO_SPACE		ENOSPC
++
++#else
++
++/** @name Error Codes */
++#define DWC_E_INVALID		1001
++#define DWC_E_NO_MEMORY		1002
++#define DWC_E_NO_DEVICE		1003
++#define DWC_E_NOT_SUPPORTED	1004
++#define DWC_E_TIMEOUT		1005
++#define DWC_E_BUSY		1006
++#define DWC_E_AGAIN		1007
++#define DWC_E_RESTART		1008
++#define DWC_E_ABORT		1009
++#define DWC_E_SHUTDOWN		1010
++#define DWC_E_NO_DATA		1011
++#define DWC_E_DISCONNECT	2000
++#define DWC_E_UNKNOWN		3000
++#define DWC_E_NO_STREAM_RES	4001
++#define DWC_E_COMMUNICATION	4002
++#define DWC_E_OVERFLOW		4003
++#define DWC_E_PROTOCOL		4004
++#define DWC_E_IN_PROGRESS	4005
++#define DWC_E_PIPE		4006
++#define DWC_E_IO		4007
++#define DWC_E_NO_SPACE		4008
++
++#endif
++
++
++/** @name Tracing/Logging Functions
++ *
++ * These function provide the capability to add tracing, debugging, and error
++ * messages, as well exceptions as assertions.  The WUDEV uses these
++ * extensively.  These could be logged to the main console, the serial port, an
++ * internal buffer, etc.  These functions could also be no-op if they are too
++ * expensive on your system.  By default undefining the DEBUG macro already
++ * no-ops some of these functions. */
++
++/** Returns non-zero if in interrupt context. */
++extern dwc_bool_t DWC_IN_IRQ(void);
++#define dwc_in_irq DWC_IN_IRQ
++
++/** Returns "IRQ" if DWC_IN_IRQ is true. */
++static inline char *dwc_irq(void) {
++	return DWC_IN_IRQ() ? "IRQ" : "";
++}
++
++/** Returns non-zero if in bottom-half context. */
++extern dwc_bool_t DWC_IN_BH(void);
++#define dwc_in_bh DWC_IN_BH
++
++/** Returns "BH" if DWC_IN_BH is true. */
++static inline char *dwc_bh(void) {
++	return DWC_IN_BH() ? "BH" : "";
++}
++
++/**
++ * A vprintf() clone.  Just call vprintf if you've got it.
++ */
++extern void DWC_VPRINTF(char *format, va_list args);
++#define dwc_vprintf DWC_VPRINTF
++
++/**
++ * A vsnprintf() clone.  Just call vprintf if you've got it.
++ */
++extern int DWC_VSNPRINTF(char *str, int size, char *format, va_list args);
++#define dwc_vsnprintf DWC_VSNPRINTF
++
++/**
++ * printf() clone.  Just call printf if you've go it.
++ */
++extern void DWC_PRINTF(char *format, ...)
++/* This provides compiler level static checking of the parameters if you're
++ * using GCC. */
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 1, 2)));
++#else
++	;
++#endif
++#define dwc_printf DWC_PRINTF
++
++/**
++ * sprintf() clone.  Just call sprintf if you've got it.
++ */
++extern int DWC_SPRINTF(char *string, char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 2, 3)));
++#else
++	;
++#endif
++#define dwc_sprintf DWC_SPRINTF
++
++/**
++ * snprintf() clone.  Just call snprintf if you've got it.
++ */
++extern int DWC_SNPRINTF(char *string, int size, char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 3, 4)));
++#else
++	;
++#endif
++#define dwc_snprintf DWC_SNPRINTF
++
++/**
++ * Prints a WARNING message.  On systems that don't differentiate between
++ * warnings and regular log messages, just print it.  Indicates that something
++ * may be wrong with the driver.  Works like printf().
++ *
++ * Use the DWC_WARN macro to call this function.
++ */
++extern void __DWC_WARN(char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 1, 2)));
++#else
++	;
++#endif
++
++/**
++ * Prints an error message.  On systems that don't differentiate between errors
++ * and regular log messages, just print it.  Indicates that something went wrong
++ * with the driver.  Works like printf().
++ *
++ * Use the DWC_ERROR macro to call this function.
++ */
++extern void __DWC_ERROR(char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 1, 2)));
++#else
++	;
++#endif
++
++/**
++ * Prints an exception error message and takes some user-defined action such as
++ * print out a backtrace or trigger a breakpoint.  Indicates that something went
++ * abnormally wrong with the driver such as programmer error, or other
++ * exceptional condition.  It should not be ignored so even on systems without
++ * printing capability, some action should be taken to notify the developer of
++ * it.  Works like printf().
++ */
++extern void DWC_EXCEPTION(char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 1, 2)));
++#else
++	;
++#endif
++#define dwc_exception DWC_EXCEPTION
++
++#ifndef DWC_OTG_DEBUG_LEV
++#define DWC_OTG_DEBUG_LEV 0
++#endif
++
++#ifdef DEBUG
++/**
++ * Prints out a debug message.  Used for logging/trace messages.
++ *
++ * Use the DWC_DEBUG macro to call this function
++ */
++extern void __DWC_DEBUG(char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 1, 2)));
++#else
++	;
++#endif
++#else
++#define __DWC_DEBUG printk
++#endif
++
++/**
++ * Prints out a Debug message.
++ */
++#define DWC_DEBUG(_format, _args...) __DWC_DEBUG("DEBUG:%s:%s: " _format "\n", \
++						 __func__, dwc_irq(), ## _args)
++#define dwc_debug DWC_DEBUG
++/**
++ * Prints out a Debug message if enabled at compile time.
++ */
++#if DWC_OTG_DEBUG_LEV > 0
++#define DWC_DEBUGC(_format, _args...) DWC_DEBUG(_format, ##_args )
++#else
++#define DWC_DEBUGC(_format, _args...)
++#endif
++#define dwc_debugc DWC_DEBUGC
++/**
++ * Prints out an informative message.
++ */
++#define DWC_INFO(_format, _args...) DWC_PRINTF("INFO:%s: " _format "\n", \
++					       dwc_irq(), ## _args)
++#define dwc_info DWC_INFO
++/**
++ * Prints out an informative message if enabled at compile time.
++ */
++#if DWC_OTG_DEBUG_LEV > 1
++#define DWC_INFOC(_format, _args...) DWC_INFO(_format, ##_args )
++#else
++#define DWC_INFOC(_format, _args...)
++#endif
++#define dwc_infoc DWC_INFOC
++/**
++ * Prints out a warning message.
++ */
++#define DWC_WARN(_format, _args...) __DWC_WARN("WARN:%s:%s:%d: " _format "\n", \
++					dwc_irq(), __func__, __LINE__, ## _args)
++#define dwc_warn DWC_WARN
++/**
++ * Prints out an error message.
++ */
++#define DWC_ERROR(_format, _args...) __DWC_ERROR("ERROR:%s:%s:%d: " _format "\n", \
++					dwc_irq(), __func__, __LINE__, ## _args)
++#define dwc_error DWC_ERROR
++
++#define DWC_PROTO_ERROR(_format, _args...) __DWC_WARN("ERROR:%s:%s:%d: " _format "\n", \
++						dwc_irq(), __func__, __LINE__, ## _args)
++#define dwc_proto_error DWC_PROTO_ERROR
++
++#ifdef DEBUG
++/** Prints out a exception error message if the _expr expression fails.  Disabled
++ * if DEBUG is not enabled. */
++#define DWC_ASSERT(_expr, _format, _args...) do { \
++	if (!(_expr)) { DWC_EXCEPTION("%s:%s:%d: " _format "\n", dwc_irq(), \
++				      __FILE__, __LINE__, ## _args); } \
++	} while (0)
++#else
++#define DWC_ASSERT(_x...)
++#endif
++#define dwc_assert DWC_ASSERT
++
++
++/** @name Byte Ordering
++ * The following functions are for conversions between processor's byte ordering
++ * and specific ordering you want.
++ */
++
++/** Converts 32 bit data in CPU byte ordering to little endian. */
++extern uint32_t DWC_CPU_TO_LE32(uint32_t *p);
++#define dwc_cpu_to_le32 DWC_CPU_TO_LE32
++
++/** Converts 32 bit data in CPU byte orderint to big endian. */
++extern uint32_t DWC_CPU_TO_BE32(uint32_t *p);
++#define dwc_cpu_to_be32 DWC_CPU_TO_BE32
++
++/** Converts 32 bit little endian data to CPU byte ordering. */
++extern uint32_t DWC_LE32_TO_CPU(uint32_t *p);
++#define dwc_le32_to_cpu DWC_LE32_TO_CPU
++
++/** Converts 32 bit big endian data to CPU byte ordering. */
++extern uint32_t DWC_BE32_TO_CPU(uint32_t *p);
++#define dwc_be32_to_cpu DWC_BE32_TO_CPU
++
++/** Converts 16 bit data in CPU byte ordering to little endian. */
++extern uint16_t DWC_CPU_TO_LE16(uint16_t *p);
++#define dwc_cpu_to_le16 DWC_CPU_TO_LE16
++
++/** Converts 16 bit data in CPU byte orderint to big endian. */
++extern uint16_t DWC_CPU_TO_BE16(uint16_t *p);
++#define dwc_cpu_to_be16 DWC_CPU_TO_BE16
++
++/** Converts 16 bit little endian data to CPU byte ordering. */
++extern uint16_t DWC_LE16_TO_CPU(uint16_t *p);
++#define dwc_le16_to_cpu DWC_LE16_TO_CPU
++
++/** Converts 16 bit bi endian data to CPU byte ordering. */
++extern uint16_t DWC_BE16_TO_CPU(uint16_t *p);
++#define dwc_be16_to_cpu DWC_BE16_TO_CPU
++
++
++/** @name Register Read/Write
++ *
++ * The following six functions should be implemented to read/write registers of
++ * 32-bit and 64-bit sizes.  All modules use this to read/write register values.
++ * The reg value is a pointer to the register calculated from the void *base
++ * variable passed into the driver when it is started.  */
++
++#ifdef DWC_LINUX
++/* Linux doesn't need any extra parameters for register read/write, so we
++ * just throw away the IO context parameter.
++ */
++/** Reads the content of a 32-bit register. */
++extern uint32_t DWC_READ_REG32(uint32_t volatile *reg);
++#define dwc_read_reg32(_ctx_,_reg_) DWC_READ_REG32(_reg_)
++
++/** Reads the content of a 64-bit register. */
++extern uint64_t DWC_READ_REG64(uint64_t volatile *reg);
++#define dwc_read_reg64(_ctx_,_reg_) DWC_READ_REG64(_reg_)
++
++/** Writes to a 32-bit register. */
++extern void DWC_WRITE_REG32(uint32_t volatile *reg, uint32_t value);
++#define dwc_write_reg32(_ctx_,_reg_,_val_) DWC_WRITE_REG32(_reg_, _val_)
++
++/** Writes to a 64-bit register. */
++extern void DWC_WRITE_REG64(uint64_t volatile *reg, uint64_t value);
++#define dwc_write_reg64(_ctx_,_reg_,_val_) DWC_WRITE_REG64(_reg_, _val_)
++
++/**
++ * Modify bit values in a register.  Using the
++ * algorithm: (reg_contents & ~clear_mask) | set_mask.
++ */
++extern void DWC_MODIFY_REG32(uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask);
++#define dwc_modify_reg32(_ctx_,_reg_,_cmsk_,_smsk_) DWC_MODIFY_REG32(_reg_,_cmsk_,_smsk_)
++extern void DWC_MODIFY_REG64(uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask);
++#define dwc_modify_reg64(_ctx_,_reg_,_cmsk_,_smsk_) DWC_MODIFY_REG64(_reg_,_cmsk_,_smsk_)
++
++#endif	/* DWC_LINUX */
++
++#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++typedef struct dwc_ioctx {
++	struct device *dev;
++	bus_space_tag_t iot;
++	bus_space_handle_t ioh;
++} dwc_ioctx_t;
++
++/** BSD needs two extra parameters for register read/write, so we pass
++ * them in using the IO context parameter.
++ */
++/** Reads the content of a 32-bit register. */
++extern uint32_t DWC_READ_REG32(void *io_ctx, uint32_t volatile *reg);
++#define dwc_read_reg32 DWC_READ_REG32
++
++/** Reads the content of a 64-bit register. */
++extern uint64_t DWC_READ_REG64(void *io_ctx, uint64_t volatile *reg);
++#define dwc_read_reg64 DWC_READ_REG64
++
++/** Writes to a 32-bit register. */
++extern void DWC_WRITE_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t value);
++#define dwc_write_reg32 DWC_WRITE_REG32
++
++/** Writes to a 64-bit register. */
++extern void DWC_WRITE_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t value);
++#define dwc_write_reg64 DWC_WRITE_REG64
++
++/**
++ * Modify bit values in a register.  Using the
++ * algorithm: (reg_contents & ~clear_mask) | set_mask.
++ */
++extern void DWC_MODIFY_REG32(void *io_ctx, uint32_t volatile *reg, uint32_t clear_mask, uint32_t set_mask);
++#define dwc_modify_reg32 DWC_MODIFY_REG32
++extern void DWC_MODIFY_REG64(void *io_ctx, uint64_t volatile *reg, uint64_t clear_mask, uint64_t set_mask);
++#define dwc_modify_reg64 DWC_MODIFY_REG64
++
++#endif	/* DWC_FREEBSD || DWC_NETBSD */
++
++/** @cond */
++
++/** @name Some convenience MACROS used internally.  Define DWC_DEBUG_REGS to log the
++ * register writes. */
++
++#ifdef DWC_LINUX
++
++# ifdef DWC_DEBUG_REGS
++
++#define dwc_define_read_write_reg_n(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg##_n(_container_type *container, int num) { \
++	return DWC_READ_REG32(&container->regs->_reg[num]); \
++} \
++static inline void dwc_write_##_reg##_n(_container_type *container, int num, uint32_t data) { \
++	DWC_DEBUG("WRITING %8s[%d]: %p: %08x", #_reg, num, \
++		  &(((uint32_t*)container->regs->_reg)[num]), data); \
++	DWC_WRITE_REG32(&(((uint32_t*)container->regs->_reg)[num]), data); \
++}
++
++#define dwc_define_read_write_reg(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg(_container_type *container) { \
++	return DWC_READ_REG32(&container->regs->_reg); \
++} \
++static inline void dwc_write_##_reg(_container_type *container, uint32_t data) { \
++	DWC_DEBUG("WRITING %11s: %p: %08x", #_reg, &container->regs->_reg, data); \
++	DWC_WRITE_REG32(&container->regs->_reg, data); \
++}
++
++# else	/* DWC_DEBUG_REGS */
++
++#define dwc_define_read_write_reg_n(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg##_n(_container_type *container, int num) { \
++	return DWC_READ_REG32(&container->regs->_reg[num]); \
++} \
++static inline void dwc_write_##_reg##_n(_container_type *container, int num, uint32_t data) { \
++	DWC_WRITE_REG32(&(((uint32_t*)container->regs->_reg)[num]), data); \
++}
++
++#define dwc_define_read_write_reg(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg(_container_type *container) { \
++	return DWC_READ_REG32(&container->regs->_reg); \
++} \
++static inline void dwc_write_##_reg(_container_type *container, uint32_t data) { \
++	DWC_WRITE_REG32(&container->regs->_reg, data); \
++}
++
++# endif	/* DWC_DEBUG_REGS */
++
++#endif	/* DWC_LINUX */
++
++#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++
++# ifdef DWC_DEBUG_REGS
++
++#define dwc_define_read_write_reg_n(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg##_n(void *io_ctx, _container_type *container, int num) { \
++	return DWC_READ_REG32(io_ctx, &container->regs->_reg[num]); \
++} \
++static inline void dwc_write_##_reg##_n(void *io_ctx, _container_type *container, int num, uint32_t data) { \
++	DWC_DEBUG("WRITING %8s[%d]: %p: %08x", #_reg, num, \
++		  &(((uint32_t*)container->regs->_reg)[num]), data); \
++	DWC_WRITE_REG32(io_ctx, &(((uint32_t*)container->regs->_reg)[num]), data); \
++}
++
++#define dwc_define_read_write_reg(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg(void *io_ctx, _container_type *container) { \
++	return DWC_READ_REG32(io_ctx, &container->regs->_reg); \
++} \
++static inline void dwc_write_##_reg(void *io_ctx, _container_type *container, uint32_t data) { \
++	DWC_DEBUG("WRITING %11s: %p: %08x", #_reg, &container->regs->_reg, data); \
++	DWC_WRITE_REG32(io_ctx, &container->regs->_reg, data); \
++}
++
++# else	/* DWC_DEBUG_REGS */
++
++#define dwc_define_read_write_reg_n(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg##_n(void *io_ctx, _container_type *container, int num) { \
++	return DWC_READ_REG32(io_ctx, &container->regs->_reg[num]); \
++} \
++static inline void dwc_write_##_reg##_n(void *io_ctx, _container_type *container, int num, uint32_t data) { \
++	DWC_WRITE_REG32(io_ctx, &(((uint32_t*)container->regs->_reg)[num]), data); \
++}
++
++#define dwc_define_read_write_reg(_reg,_container_type) \
++static inline uint32_t dwc_read_##_reg(void *io_ctx, _container_type *container) { \
++	return DWC_READ_REG32(io_ctx, &container->regs->_reg); \
++} \
++static inline void dwc_write_##_reg(void *io_ctx, _container_type *container, uint32_t data) { \
++	DWC_WRITE_REG32(io_ctx, &container->regs->_reg, data); \
++}
++
++# endif	/* DWC_DEBUG_REGS */
++
++#endif	/* DWC_FREEBSD || DWC_NETBSD */
++
++/** @endcond */
++
++
++#ifdef DWC_CRYPTOLIB
++/** @name Crypto Functions
++ *
++ * These are the low-level cryptographic functions used by the driver. */
++
++/** Perform AES CBC */
++extern int DWC_AES_CBC(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t iv[16], uint8_t *out);
++#define dwc_aes_cbc DWC_AES_CBC
++
++/** Fill the provided buffer with random bytes.  These should be cryptographic grade random numbers. */
++extern void DWC_RANDOM_BYTES(uint8_t *buffer, uint32_t length);
++#define dwc_random_bytes DWC_RANDOM_BYTES
++
++/** Perform the SHA-256 hash function */
++extern int DWC_SHA256(uint8_t *message, uint32_t len, uint8_t *out);
++#define dwc_sha256 DWC_SHA256
++
++/** Calculated the HMAC-SHA256 */
++extern int DWC_HMAC_SHA256(uint8_t *message, uint32_t messagelen, uint8_t *key, uint32_t keylen, uint8_t *out);
++#define dwc_hmac_sha256 DWC_HMAC_SHA256
++
++#endif	/* DWC_CRYPTOLIB */
++
++
++/** @name Memory Allocation
++ *
++ * These function provide access to memory allocation.  There are only 2 DMA
++ * functions and 3 Regular memory functions that need to be implemented.  None
++ * of the memory debugging routines need to be implemented.  The allocation
++ * routines all ZERO the contents of the memory.
++ *
++ * Defining DWC_DEBUG_MEMORY turns on memory debugging and statistic gathering.
++ * This checks for memory leaks, keeping track of alloc/free pairs.  It also
++ * keeps track of how much memory the driver is using at any given time. */
++
++#define DWC_PAGE_SIZE 4096
++#define DWC_PAGE_OFFSET(addr) (((uint32_t)addr) & 0xfff)
++#define DWC_PAGE_ALIGNED(addr) ((((uint32_t)addr) & 0xfff) == 0)
++
++#define DWC_INVALID_DMA_ADDR 0x0
++
++#ifdef DWC_LINUX
++/** Type for a DMA address */
++typedef dma_addr_t dwc_dma_t;
++#endif
++
++#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++typedef bus_addr_t dwc_dma_t;
++#endif
++
++#ifdef DWC_FREEBSD
++typedef struct dwc_dmactx {
++	struct device *dev;
++	bus_dma_tag_t dma_tag;
++	bus_dmamap_t dma_map;
++	bus_addr_t dma_paddr;
++	void *dma_vaddr;
++} dwc_dmactx_t;
++#endif
++
++#ifdef DWC_NETBSD
++typedef struct dwc_dmactx {
++	struct device *dev;
++	bus_dma_tag_t dma_tag;
++	bus_dmamap_t dma_map;
++	bus_dma_segment_t segs[1];
++	int nsegs;
++	bus_addr_t dma_paddr;
++	void *dma_vaddr;
++} dwc_dmactx_t;
++#endif
++
++/* @todo these functions will be added in the future */
++#if 0
++/**
++ * Creates a DMA pool from which you can allocate DMA buffers.  Buffers
++ * allocated from this pool will be guaranteed to meet the size, alignment, and
++ * boundary requirements specified.
++ *
++ * @param[in] size Specifies the size of the buffers that will be allocated from
++ * this pool.
++ * @param[in] align Specifies the byte alignment requirements of the buffers
++ * allocated from this pool.  Must be a power of 2.
++ * @param[in] boundary Specifies the N-byte boundary that buffers allocated from
++ * this pool must not cross.
++ *
++ * @returns A pointer to an internal opaque structure which is not to be
++ * accessed outside of these library functions.  Use this handle to specify
++ * which pools to allocate/free DMA buffers from and also to destroy the pool,
++ * when you are done with it.
++ */
++extern dwc_pool_t *DWC_DMA_POOL_CREATE(uint32_t size, uint32_t align, uint32_t boundary);
++
++/**
++ * Destroy a DMA pool.  All buffers allocated from that pool must be freed first.
++ */
++extern void DWC_DMA_POOL_DESTROY(dwc_pool_t *pool);
++
++/**
++ * Allocate a buffer from the specified DMA pool and zeros its contents.
++ */
++extern void *DWC_DMA_POOL_ALLOC(dwc_pool_t *pool, uint64_t *dma_addr);
++
++/**
++ * Free a previously allocated buffer from the DMA pool.
++ */
++extern void DWC_DMA_POOL_FREE(dwc_pool_t *pool, void *vaddr, void *daddr);
++#endif
++
++/** Allocates a DMA capable buffer and zeroes its contents. */
++extern void *__DWC_DMA_ALLOC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr);
++
++/** Allocates a DMA capable buffer and zeroes its contents in atomic contest */
++extern void *__DWC_DMA_ALLOC_ATOMIC(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr);
++
++/** Frees a previously allocated buffer. */
++extern void __DWC_DMA_FREE(void *dma_ctx, uint32_t size, void *virt_addr, dwc_dma_t dma_addr);
++
++/** Allocates a block of memory and zeroes its contents. */
++extern void *__DWC_ALLOC(void *mem_ctx, uint32_t size);
++
++/** Allocates a block of memory and zeroes its contents, in an atomic manner
++ * which can be used inside interrupt context.  The size should be sufficiently
++ * small, a few KB at most, such that failures are not likely to occur.  Can just call
++ * __DWC_ALLOC if it is atomic. */
++extern void *__DWC_ALLOC_ATOMIC(void *mem_ctx, uint32_t size);
++
++/** Frees a previously allocated buffer. */
++extern void __DWC_FREE(void *mem_ctx, void *addr);
++
++#ifndef DWC_DEBUG_MEMORY
++
++#define DWC_ALLOC(_size_) __DWC_ALLOC(NULL, _size_)
++#define DWC_ALLOC_ATOMIC(_size_) __DWC_ALLOC_ATOMIC(NULL, _size_)
++#define DWC_FREE(_addr_) __DWC_FREE(NULL, _addr_)
++
++# ifdef DWC_LINUX
++#define DWC_DMA_ALLOC(_dev, _size_, _dma_) __DWC_DMA_ALLOC(_dev, _size_, _dma_)
++#define DWC_DMA_ALLOC_ATOMIC(_dev, _size_, _dma_) __DWC_DMA_ALLOC_ATOMIC(_dev, _size_, _dma_)
++#define DWC_DMA_FREE(_dev, _size_,_virt_, _dma_) __DWC_DMA_FREE(_dev, _size_, _virt_, _dma_)
++# endif
++
++# if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++#define DWC_DMA_ALLOC __DWC_DMA_ALLOC
++#define DWC_DMA_FREE __DWC_DMA_FREE
++# endif
++extern void *dwc_dma_alloc_atomic_debug(uint32_t size, dwc_dma_t *dma_addr, char const *func, int line);
++
++#else	/* DWC_DEBUG_MEMORY */
++
++extern void *dwc_alloc_debug(void *mem_ctx, uint32_t size, char const *func, int line);
++extern void *dwc_alloc_atomic_debug(void *mem_ctx, uint32_t size, char const *func, int line);
++extern void dwc_free_debug(void *mem_ctx, void *addr, char const *func, int line);
++extern void *dwc_dma_alloc_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
++				 char const *func, int line);
++extern void *dwc_dma_alloc_atomic_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
++				char const *func, int line);
++extern void dwc_dma_free_debug(void *dma_ctx, uint32_t size, void *virt_addr,
++			       dwc_dma_t dma_addr, char const *func, int line);
++
++extern int dwc_memory_debug_start(void *mem_ctx);
++extern void dwc_memory_debug_stop(void);
++extern void dwc_memory_debug_report(void);
++
++#define DWC_ALLOC(_size_) dwc_alloc_debug(NULL, _size_, __func__, __LINE__)
++#define DWC_ALLOC_ATOMIC(_size_) dwc_alloc_atomic_debug(NULL, _size_, \
++							__func__, __LINE__)
++#define DWC_FREE(_addr_) dwc_free_debug(NULL, _addr_, __func__, __LINE__)
++
++# ifdef DWC_LINUX
++#define DWC_DMA_ALLOC(_dev, _size_, _dma_) \
++	dwc_dma_alloc_debug(_dev, _size_, _dma_, __func__, __LINE__)
++#define DWC_DMA_ALLOC_ATOMIC(_dev, _size_, _dma_) \
++	dwc_dma_alloc_atomic_debug(_dev, _size_, _dma_, __func__, __LINE__)
++#define DWC_DMA_FREE(_dev, _size_, _virt_, _dma_) \
++	dwc_dma_free_debug(_dev, _size_, _virt_, _dma_, __func__, __LINE__)
++# endif
++
++# if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++#define DWC_DMA_ALLOC(_ctx_,_size_,_dma_) dwc_dma_alloc_debug(_ctx_, _size_, \
++						_dma_, __func__, __LINE__)
++#define DWC_DMA_FREE(_ctx_,_size_,_virt_,_dma_) dwc_dma_free_debug(_ctx_, _size_, \
++						 _virt_, _dma_, __func__, __LINE__)
++# endif
++
++#endif /* DWC_DEBUG_MEMORY */
++
++#define dwc_alloc(_ctx_,_size_) DWC_ALLOC(_size_)
++#define dwc_alloc_atomic(_ctx_,_size_) DWC_ALLOC_ATOMIC(_size_)
++#define dwc_free(_ctx_,_addr_) DWC_FREE(_addr_)
++
++#ifdef DWC_LINUX
++/* Linux doesn't need any extra parameters for DMA buffer allocation, so we
++ * just throw away the DMA context parameter.
++ */
++#define dwc_dma_alloc(_ctx_,_size_,_dma_) DWC_DMA_ALLOC(_size_, _dma_)
++#define dwc_dma_alloc_atomic(_ctx_,_size_,_dma_) DWC_DMA_ALLOC_ATOMIC(_size_, _dma_)
++#define dwc_dma_free(_ctx_,_size_,_virt_,_dma_) DWC_DMA_FREE(_size_, _virt_, _dma_)
++#endif
++
++#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++/** BSD needs several extra parameters for DMA buffer allocation, so we pass
++ * them in using the DMA context parameter.
++ */
++#define dwc_dma_alloc DWC_DMA_ALLOC
++#define dwc_dma_free DWC_DMA_FREE
++#endif
++
++
++/** @name Memory and String Processing */
++
++/** memset() clone */
++extern void *DWC_MEMSET(void *dest, uint8_t byte, uint32_t size);
++#define dwc_memset DWC_MEMSET
++
++/** memcpy() clone */
++extern void *DWC_MEMCPY(void *dest, void const *src, uint32_t size);
++#define dwc_memcpy DWC_MEMCPY
++
++/** memmove() clone */
++extern void *DWC_MEMMOVE(void *dest, void *src, uint32_t size);
++#define dwc_memmove DWC_MEMMOVE
++
++/** memcmp() clone */
++extern int DWC_MEMCMP(void *m1, void *m2, uint32_t size);
++#define dwc_memcmp DWC_MEMCMP
++
++/** strcmp() clone */
++extern int DWC_STRCMP(void *s1, void *s2);
++#define dwc_strcmp DWC_STRCMP
++
++/** strncmp() clone */
++extern int DWC_STRNCMP(void *s1, void *s2, uint32_t size);
++#define dwc_strncmp DWC_STRNCMP
++
++/** strlen() clone, for NULL terminated ASCII strings */
++extern int DWC_STRLEN(char const *str);
++#define dwc_strlen DWC_STRLEN
++
++/** strcpy() clone, for NULL terminated ASCII strings */
++extern char *DWC_STRCPY(char *to, const char *from);
++#define dwc_strcpy DWC_STRCPY
++
++/** strdup() clone.  If you wish to use memory allocation debugging, this
++ * implementation of strdup should use the DWC_* memory routines instead of
++ * calling a predefined strdup.  Otherwise the memory allocated by this routine
++ * will not be seen by the debugging routines. */
++extern char *DWC_STRDUP(char const *str);
++#define dwc_strdup(_ctx_,_str_) DWC_STRDUP(_str_)
++
++/** NOT an atoi() clone.  Read the description carefully.  Returns an integer
++ * converted from the string str in base 10 unless the string begins with a "0x"
++ * in which case it is base 16.  String must be a NULL terminated sequence of
++ * ASCII characters and may optionally begin with whitespace, a + or -, and a
++ * "0x" prefix if base 16.  The remaining characters must be valid digits for
++ * the number and end with a NULL character.  If any invalid characters are
++ * encountered or it returns with a negative error code and the results of the
++ * conversion are undefined.  On sucess it returns 0.  Overflow conditions are
++ * undefined.  An example implementation using atoi() can be referenced from the
++ * Linux implementation. */
++extern int DWC_ATOI(const char *str, int32_t *value);
++#define dwc_atoi DWC_ATOI
++
++/** Same as above but for unsigned. */
++extern int DWC_ATOUI(const char *str, uint32_t *value);
++#define dwc_atoui DWC_ATOUI
++
++#ifdef DWC_UTFLIB
++/** This routine returns a UTF16LE unicode encoded string from a UTF8 string. */
++extern int DWC_UTF8_TO_UTF16LE(uint8_t const *utf8string, uint16_t *utf16string, unsigned len);
++#define dwc_utf8_to_utf16le DWC_UTF8_TO_UTF16LE
++#endif
++
++
++/** @name Wait queues
++ *
++ * Wait queues provide a means of synchronizing between threads or processes.  A
++ * process can block on a waitq if some condition is not true, waiting for it to
++ * become true.  When the waitq is triggered all waiting process will get
++ * unblocked and the condition will be check again.  Waitqs should be triggered
++ * every time a condition can potentially change.*/
++struct dwc_waitq;
++
++/** Type for a waitq */
++typedef struct dwc_waitq dwc_waitq_t;
++
++/** The type of waitq condition callback function.  This is called every time
++ * condition is evaluated. */
++typedef int (*dwc_waitq_condition_t)(void *data);
++
++/** Allocate a waitq */
++extern dwc_waitq_t *DWC_WAITQ_ALLOC(void);
++#define dwc_waitq_alloc(_ctx_) DWC_WAITQ_ALLOC()
++
++/** Free a waitq */
++extern void DWC_WAITQ_FREE(dwc_waitq_t *wq);
++#define dwc_waitq_free DWC_WAITQ_FREE
++
++/** Check the condition and if it is false, block on the waitq.  When unblocked, check the
++ * condition again.  The function returns when the condition becomes true.  The return value
++ * is 0 on condition true, DWC_WAITQ_ABORTED on abort or killed, or DWC_WAITQ_UNKNOWN on error. */
++extern int32_t DWC_WAITQ_WAIT(dwc_waitq_t *wq, dwc_waitq_condition_t cond, void *data);
++#define dwc_waitq_wait DWC_WAITQ_WAIT
++
++/** Check the condition and if it is false, block on the waitq.  When unblocked,
++ * check the condition again.  The function returns when the condition become
++ * true or the timeout has passed.  The return value is 0 on condition true or
++ * DWC_TIMED_OUT on timeout, or DWC_WAITQ_ABORTED, or DWC_WAITQ_UNKNOWN on
++ * error. */
++extern int32_t DWC_WAITQ_WAIT_TIMEOUT(dwc_waitq_t *wq, dwc_waitq_condition_t cond,
++				      void *data, int32_t msecs);
++#define dwc_waitq_wait_timeout DWC_WAITQ_WAIT_TIMEOUT
++
++/** Trigger a waitq, unblocking all processes.  This should be called whenever a condition
++ * has potentially changed. */
++extern void DWC_WAITQ_TRIGGER(dwc_waitq_t *wq);
++#define dwc_waitq_trigger DWC_WAITQ_TRIGGER
++
++/** Unblock all processes waiting on the waitq with an ABORTED result. */
++extern void DWC_WAITQ_ABORT(dwc_waitq_t *wq);
++#define dwc_waitq_abort DWC_WAITQ_ABORT
++
++
++/** @name Threads
++ *
++ * A thread must be explicitly stopped.  It must check DWC_THREAD_SHOULD_STOP
++ * whenever it is woken up, and then return.  The DWC_THREAD_STOP function
++ * returns the value from the thread.
++ */
++
++struct dwc_thread;
++
++/** Type for a thread */
++typedef struct dwc_thread dwc_thread_t;
++
++/** The thread function */
++typedef int (*dwc_thread_function_t)(void *data);
++
++/** Create a thread and start it running the thread_function.  Returns a handle
++ * to the thread */
++extern dwc_thread_t *DWC_THREAD_RUN(dwc_thread_function_t func, char *name, void *data);
++#define dwc_thread_run(_ctx_,_func_,_name_,_data_) DWC_THREAD_RUN(_func_, _name_, _data_)
++
++/** Stops a thread.  Return the value returned by the thread.  Or will return
++ * DWC_ABORT if the thread never started. */
++extern int DWC_THREAD_STOP(dwc_thread_t *thread);
++#define dwc_thread_stop DWC_THREAD_STOP
++
++/** Signifies to the thread that it must stop. */
++#ifdef DWC_LINUX
++/* Linux doesn't need any parameters for kthread_should_stop() */
++extern dwc_bool_t DWC_THREAD_SHOULD_STOP(void);
++#define dwc_thread_should_stop(_thrd_) DWC_THREAD_SHOULD_STOP()
++
++/* No thread_exit function in Linux */
++#define dwc_thread_exit(_thrd_)
++#endif
++
++#if defined(DWC_FREEBSD) || defined(DWC_NETBSD)
++/** BSD needs the thread pointer for kthread_suspend_check() */
++extern dwc_bool_t DWC_THREAD_SHOULD_STOP(dwc_thread_t *thread);
++#define dwc_thread_should_stop DWC_THREAD_SHOULD_STOP
++
++/** The thread must call this to exit. */
++extern void DWC_THREAD_EXIT(dwc_thread_t *thread);
++#define dwc_thread_exit DWC_THREAD_EXIT
++#endif
++
++
++/** @name Work queues
++ *
++ * Workqs are used to queue a callback function to be called at some later time,
++ * in another thread. */
++struct dwc_workq;
++
++/** Type for a workq */
++typedef struct dwc_workq dwc_workq_t;
++
++/** The type of the callback function to be called. */
++typedef void (*dwc_work_callback_t)(void *data);
++
++/** Allocate a workq */
++extern dwc_workq_t *DWC_WORKQ_ALLOC(char *name);
++#define dwc_workq_alloc(_ctx_,_name_) DWC_WORKQ_ALLOC(_name_)
++
++/** Free a workq.  All work must be completed before being freed. */
++extern void DWC_WORKQ_FREE(dwc_workq_t *workq);
++#define dwc_workq_free DWC_WORKQ_FREE
++
++/** Schedule a callback on the workq, passing in data.  The function will be
++ * scheduled at some later time. */
++extern void DWC_WORKQ_SCHEDULE(dwc_workq_t *workq, dwc_work_callback_t cb,
++			       void *data, char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 4, 5)));
++#else
++	;
++#endif
++#define dwc_workq_schedule DWC_WORKQ_SCHEDULE
++
++/** Schedule a callback on the workq, that will be called until at least
++ * given number miliseconds have passed. */
++extern void DWC_WORKQ_SCHEDULE_DELAYED(dwc_workq_t *workq, dwc_work_callback_t cb,
++				       void *data, uint32_t time, char *format, ...)
++#ifdef __GNUC__
++	__attribute__ ((format(printf, 5, 6)));
++#else
++	;
++#endif
++#define dwc_workq_schedule_delayed DWC_WORKQ_SCHEDULE_DELAYED
++
++/** The number of processes in the workq */
++extern int DWC_WORKQ_PENDING(dwc_workq_t *workq);
++#define dwc_workq_pending DWC_WORKQ_PENDING
++
++/** Blocks until all the work in the workq is complete or timed out.  Returns <
++ * 0 on timeout. */
++extern int DWC_WORKQ_WAIT_WORK_DONE(dwc_workq_t *workq, int timeout);
++#define dwc_workq_wait_work_done DWC_WORKQ_WAIT_WORK_DONE
++
++
++/** @name Tasklets
++ *
++ */
++struct dwc_tasklet;
++
++/** Type for a tasklet */
++typedef struct dwc_tasklet dwc_tasklet_t;
++
++/** The type of the callback function to be called */
++typedef void (*dwc_tasklet_callback_t)(void *data);
++
++/** Allocates a tasklet */
++extern dwc_tasklet_t *DWC_TASK_ALLOC(char *name, dwc_tasklet_callback_t cb, void *data);
++#define dwc_task_alloc(_ctx_,_name_,_cb_,_data_) DWC_TASK_ALLOC(_name_, _cb_, _data_)
++
++/** Frees a tasklet */
++extern void DWC_TASK_FREE(dwc_tasklet_t *task);
++#define dwc_task_free DWC_TASK_FREE
++
++/** Schedules a tasklet to run */
++extern void DWC_TASK_SCHEDULE(dwc_tasklet_t *task);
++#define dwc_task_schedule DWC_TASK_SCHEDULE
++
++extern void DWC_TASK_HI_SCHEDULE(dwc_tasklet_t *task);
++#define dwc_task_hi_schedule DWC_TASK_HI_SCHEDULE
++
++/** @name Timer
++ *
++ * Callbacks must be small and atomic.
++ */
++struct dwc_timer;
++
++/** Type for a timer */
++typedef struct dwc_timer dwc_timer_t;
++
++/** The type of the callback function to be called */
++typedef void (*dwc_timer_callback_t)(void *data);
++
++/** Allocates a timer */
++extern dwc_timer_t *DWC_TIMER_ALLOC(char *name, dwc_timer_callback_t cb, void *data);
++#define dwc_timer_alloc(_ctx_,_name_,_cb_,_data_) DWC_TIMER_ALLOC(_name_,_cb_,_data_)
++
++/** Frees a timer */
++extern void DWC_TIMER_FREE(dwc_timer_t *timer);
++#define dwc_timer_free DWC_TIMER_FREE
++
++/** Schedules the timer to run at time ms from now.  And will repeat at every
++ * repeat_interval msec therafter
++ *
++ * Modifies a timer that is still awaiting execution to a new expiration time.
++ * The mod_time is added to the old time.  */
++extern void DWC_TIMER_SCHEDULE(dwc_timer_t *timer, uint32_t time);
++#define dwc_timer_schedule DWC_TIMER_SCHEDULE
++
++/** Disables the timer from execution. */
++extern void DWC_TIMER_CANCEL(dwc_timer_t *timer);
++#define dwc_timer_cancel DWC_TIMER_CANCEL
++
++
++/** @name Spinlocks
++ *
++ * These locks are used when the work between the lock/unlock is atomic and
++ * short.  Interrupts are also disabled during the lock/unlock and thus they are
++ * suitable to lock between interrupt/non-interrupt context.  They also lock
++ * between processes if you have multiple CPUs or Preemption.  If you don't have
++ * multiple CPUS or Preemption, then the you can simply implement the
++ * DWC_SPINLOCK and DWC_SPINUNLOCK to disable and enable interrupts.  Because
++ * the work between the lock/unlock is atomic, the process context will never
++ * change, and so you never have to lock between processes.  */
++
++struct dwc_spinlock;
++
++/** Type for a spinlock */
++typedef struct dwc_spinlock dwc_spinlock_t;
++
++/** Type for the 'flags' argument to spinlock funtions */
++typedef unsigned long dwc_irqflags_t;
++
++/** Returns an initialized lock variable.  This function should allocate and
++ * initialize the OS-specific data structure used for locking.  This data
++ * structure is to be used for the DWC_LOCK and DWC_UNLOCK functions and should
++ * be freed by the DWC_FREE_LOCK when it is no longer used.
++ *
++ * For Linux Spinlock Debugging make it macro because the debugging routines use
++ * the symbol name to determine recursive locking. Using a wrapper function
++ * makes it falsely think recursive locking occurs. */
++#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK)
++#define DWC_SPINLOCK_ALLOC_LINUX_DEBUG(lock) ({ \
++	lock = DWC_ALLOC(sizeof(spinlock_t)); \
++	if (lock) { \
++		spin_lock_init((spinlock_t *)lock); \
++	} \
++})
++#else
++extern dwc_spinlock_t *DWC_SPINLOCK_ALLOC(void);
++#define dwc_spinlock_alloc(_ctx_) DWC_SPINLOCK_ALLOC()
++#endif
++
++/** Frees an initialized lock variable. */
++extern void DWC_SPINLOCK_FREE(dwc_spinlock_t *lock);
++#define dwc_spinlock_free(_ctx_,_lock_) DWC_SPINLOCK_FREE(_lock_)
++
++/** Disables interrupts and blocks until it acquires the lock.
++ *
++ * @param lock Pointer to the spinlock.
++ * @param flags Unsigned long for irq flags storage.
++ */
++extern void DWC_SPINLOCK_IRQSAVE(dwc_spinlock_t *lock, dwc_irqflags_t *flags);
++#define dwc_spinlock_irqsave DWC_SPINLOCK_IRQSAVE
++
++/** Re-enables the interrupt and releases the lock.
++ *
++ * @param lock Pointer to the spinlock.
++ * @param flags Unsigned long for irq flags storage.  Must be the same as was
++ * passed into DWC_LOCK.
++ */
++extern void DWC_SPINUNLOCK_IRQRESTORE(dwc_spinlock_t *lock, dwc_irqflags_t flags);
++#define dwc_spinunlock_irqrestore DWC_SPINUNLOCK_IRQRESTORE
++
++/** Blocks until it acquires the lock.
++ *
++ * @param lock Pointer to the spinlock.
++ */
++extern void DWC_SPINLOCK(dwc_spinlock_t *lock);
++#define dwc_spinlock DWC_SPINLOCK
++
++/** Releases the lock.
++ *
++ * @param lock Pointer to the spinlock.
++ */
++extern void DWC_SPINUNLOCK(dwc_spinlock_t *lock);
++#define dwc_spinunlock DWC_SPINUNLOCK
++
++
++/** @name Mutexes
++ *
++ * Unlike spinlocks Mutexes lock only between processes and the work between the
++ * lock/unlock CAN block, therefore it CANNOT be called from interrupt context.
++ */
++
++struct dwc_mutex;
++
++/** Type for a mutex */
++typedef struct dwc_mutex dwc_mutex_t;
++
++/* For Linux Mutex Debugging make it inline because the debugging routines use
++ * the symbol to determine recursive locking.  This makes it falsely think
++ * recursive locking occurs. */
++#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES)
++#define DWC_MUTEX_ALLOC_LINUX_DEBUG(__mutexp) ({ \
++	__mutexp = (dwc_mutex_t *)DWC_ALLOC(sizeof(struct mutex)); \
++	mutex_init((struct mutex *)__mutexp); \
++})
++#endif
++
++/** Allocate a mutex */
++extern dwc_mutex_t *DWC_MUTEX_ALLOC(void);
++#define dwc_mutex_alloc(_ctx_) DWC_MUTEX_ALLOC()
++
++/* For memory leak debugging when using Linux Mutex Debugging */
++#if defined(DWC_LINUX) && defined(CONFIG_DEBUG_MUTEXES)
++#define DWC_MUTEX_FREE(__mutexp) do { \
++	mutex_destroy((struct mutex *)__mutexp); \
++	DWC_FREE(__mutexp); \
++} while(0)
++#else
++/** Free a mutex */
++extern void DWC_MUTEX_FREE(dwc_mutex_t *mutex);
++#define dwc_mutex_free(_ctx_,_mutex_) DWC_MUTEX_FREE(_mutex_)
++#endif
++
++/** Lock a mutex */
++extern void DWC_MUTEX_LOCK(dwc_mutex_t *mutex);
++#define dwc_mutex_lock DWC_MUTEX_LOCK
++
++/** Non-blocking lock returns 1 on successful lock. */
++extern int DWC_MUTEX_TRYLOCK(dwc_mutex_t *mutex);
++#define dwc_mutex_trylock DWC_MUTEX_TRYLOCK
++
++/** Unlock a mutex */
++extern void DWC_MUTEX_UNLOCK(dwc_mutex_t *mutex);
++#define dwc_mutex_unlock DWC_MUTEX_UNLOCK
++
++
++/** @name Time */
++
++/** Microsecond delay.
++ *
++ * @param usecs  Microseconds to delay.
++ */
++extern void DWC_UDELAY(uint32_t usecs);
++#define dwc_udelay DWC_UDELAY
++
++/** Millisecond delay.
++ *
++ * @param msecs  Milliseconds to delay.
++ */
++extern void DWC_MDELAY(uint32_t msecs);
++#define dwc_mdelay DWC_MDELAY
++
++/** Non-busy waiting.
++ * Sleeps for specified number of milliseconds.
++ *
++ * @param msecs Milliseconds to sleep.
++ */
++extern void DWC_MSLEEP(uint32_t msecs);
++#define dwc_msleep DWC_MSLEEP
++
++/**
++ * Returns number of milliseconds since boot.
++ */
++extern uint32_t DWC_TIME(void);
++#define dwc_time DWC_TIME
++
++
++
++
++/* @mainpage DWC Portability and Common Library
++ *
++ * This is the documentation for the DWC Portability and Common Library.
++ *
++ * @section intro Introduction
++ *
++ * The DWC Portability library consists of wrapper calls and data structures to
++ * all low-level functions which are typically provided by the OS.  The WUDEV
++ * driver uses only these functions.  In order to port the WUDEV driver, only
++ * the functions in this library need to be re-implemented, with the same
++ * behavior as documented here.
++ *
++ * The Common library consists of higher level functions, which rely only on
++ * calling the functions from the DWC Portability library.  These common
++ * routines are shared across modules.  Some of the common libraries need to be
++ * used directly by the driver programmer when porting WUDEV.  Such as the
++ * parameter and notification libraries.
++ *
++ * @section low Portability Library OS Wrapper Functions
++ *
++ * Any function starting with DWC and in all CAPS is a low-level OS-wrapper that
++ * needs to be implemented when porting, for example DWC_MUTEX_ALLOC().  All of
++ * these functions are included in the dwc_os.h file.
++ *
++ * There are many functions here covering a wide array of OS services.  Please
++ * see dwc_os.h for details, and implementation notes for each function.
++ *
++ * @section common Common Library Functions
++ *
++ * Any function starting with dwc and in all lowercase is a common library
++ * routine.  These functions have a portable implementation and do not need to
++ * be reimplemented when porting.  The common routines can be used by any
++ * driver, and some must be used by the end user to control the drivers.  For
++ * example, you must use the Parameter common library in order to set the
++ * parameters in the WUDEV module.
++ *
++ * The common libraries consist of the following:
++ *
++ * - Connection Contexts - Used internally and can be used by end-user.  See dwc_cc.h
++ * - Parameters - Used internally and can be used by end-user.  See dwc_params.h
++ * - Notifications - Used internally and can be used by end-user.  See dwc_notifier.h
++ * - Lists - Used internally and can be used by end-user.  See dwc_list.h
++ * - Memory Debugging - Used internally and can be used by end-user.  See dwc_os.h
++ * - Modpow - Used internally only.  See dwc_modpow.h
++ * - DH - Used internally only.  See dwc_dh.h
++ * - Crypto - Used internally only.  See dwc_crypto.h
++ *
++ *
++ * @section prereq Prerequistes For dwc_os.h
++ * @subsection types Data Types
++ *
++ * The dwc_os.h file assumes that several low-level data types are pre defined for the
++ * compilation environment.  These data types are:
++ *
++ * - uint8_t - unsigned 8-bit data type
++ * - int8_t - signed 8-bit data type
++ * - uint16_t - unsigned 16-bit data type
++ * - int16_t - signed 16-bit data type
++ * - uint32_t - unsigned 32-bit data type
++ * - int32_t - signed 32-bit data type
++ * - uint64_t - unsigned 64-bit data type
++ * - int64_t - signed 64-bit data type
++ *
++ * Ensure that these are defined before using dwc_os.h.  The easiest way to do
++ * that is to modify the top of the file to include the appropriate header.
++ * This is already done for the Linux environment.  If the DWC_LINUX macro is
++ * defined, the correct header will be added.  A standard header <stdint.h> is
++ * also used for environments where standard C headers are available.
++ *
++ * @subsection stdarg Variable Arguments
++ *
++ * Variable arguments are provided by a standard C header <stdarg.h>.  it is
++ * available in Both the Linux and ANSI C enviornment.  An equivalent must be
++ * provided in your enviornment in order to use dwc_os.h with the debug and
++ * tracing message functionality.
++ *
++ * @subsection thread Threading
++ *
++ * WUDEV Core must be run on an operating system that provides for multiple
++ * threads/processes.  Threading can be implemented in many ways, even in
++ * embedded systems without an operating system.  At the bare minimum, the
++ * system should be able to start any number of processes at any time to handle
++ * special work.  It need not be a pre-emptive system.  Process context can
++ * change upon a call to a blocking function.  The hardware interrupt context
++ * that calls the module's ISR() function must be differentiable from process
++ * context, even if your processes are impemented via a hardware interrupt.
++ * Further locking mechanism between process must exist (or be implemented), and
++ * process context must have a way to disable interrupts for a period of time to
++ * lock them out.  If all of this exists, the functions in dwc_os.h related to
++ * threading should be able to be implemented with the defined behavior.
++ *
++ */
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* _DWC_OS_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_common_port/usb.h
+@@ -0,0 +1,946 @@
++/*
++ * Copyright (c) 1998 The NetBSD Foundation, Inc.
++ * All rights reserved.
++ *
++ * This code is derived from software contributed to The NetBSD Foundation
++ * by Lennart Augustsson (lennart@augustsson.net) at
++ * Carlstedt Research & Technology.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. All advertising materials mentioning features or use of this software
++ *    must display the following acknowledgement:
++ *        This product includes software developed by the NetBSD
++ *        Foundation, Inc. and its contributors.
++ * 4. Neither the name of The NetBSD Foundation nor the names of its
++ *    contributors may be used to endorse or promote products derived
++ *    from this software without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
++ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
++ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
++ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
++ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
++ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
++ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
++ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
++ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
++ * POSSIBILITY OF SUCH DAMAGE.
++ */
++
++/* Modified by Synopsys, Inc, 12/12/2007 */
++
++
++#ifndef _USB_H_
++#define _USB_H_
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++/*
++ * The USB records contain some unaligned little-endian word
++ * components.  The U[SG]ETW macros take care of both the alignment
++ * and endian problem and should always be used to access non-byte
++ * values.
++ */
++typedef u_int8_t uByte;
++typedef u_int8_t uWord[2];
++typedef u_int8_t uDWord[4];
++
++#define USETW2(w,h,l) ((w)[0] = (u_int8_t)(l), (w)[1] = (u_int8_t)(h))
++#define UCONSTW(x)	{ (x) & 0xff, ((x) >> 8) & 0xff }
++#define UCONSTDW(x)	{ (x) & 0xff, ((x) >> 8) & 0xff, \
++			  ((x) >> 16) & 0xff, ((x) >> 24) & 0xff }
++
++#if 1
++#define UGETW(w) ((w)[0] | ((w)[1] << 8))
++#define USETW(w,v) ((w)[0] = (u_int8_t)(v), (w)[1] = (u_int8_t)((v) >> 8))
++#define UGETDW(w) ((w)[0] | ((w)[1] << 8) | ((w)[2] << 16) | ((w)[3] << 24))
++#define USETDW(w,v) ((w)[0] = (u_int8_t)(v), \
++		     (w)[1] = (u_int8_t)((v) >> 8), \
++		     (w)[2] = (u_int8_t)((v) >> 16), \
++		     (w)[3] = (u_int8_t)((v) >> 24))
++#else
++/*
++ * On little-endian machines that can handle unanliged accesses
++ * (e.g. i386) these macros can be replaced by the following.
++ */
++#define UGETW(w) (*(u_int16_t *)(w))
++#define USETW(w,v) (*(u_int16_t *)(w) = (v))
++#define UGETDW(w) (*(u_int32_t *)(w))
++#define USETDW(w,v) (*(u_int32_t *)(w) = (v))
++#endif
++
++/*
++ * Macros for accessing UAS IU fields, which are big-endian
++ */
++#define IUSETW2(w,h,l) ((w)[0] = (u_int8_t)(h), (w)[1] = (u_int8_t)(l))
++#define IUCONSTW(x)	{ ((x) >> 8) & 0xff, (x) & 0xff }
++#define IUCONSTDW(x)	{ ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \
++			((x) >> 8) & 0xff, (x) & 0xff }
++#define IUGETW(w) (((w)[0] << 8) | (w)[1])
++#define IUSETW(w,v) ((w)[0] = (u_int8_t)((v) >> 8), (w)[1] = (u_int8_t)(v))
++#define IUGETDW(w) (((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3])
++#define IUSETDW(w,v) ((w)[0] = (u_int8_t)((v) >> 24), \
++		      (w)[1] = (u_int8_t)((v) >> 16), \
++		      (w)[2] = (u_int8_t)((v) >> 8), \
++		      (w)[3] = (u_int8_t)(v))
++
++#define UPACKED __attribute__((__packed__))
++
++typedef struct {
++	uByte		bmRequestType;
++	uByte		bRequest;
++	uWord		wValue;
++	uWord		wIndex;
++	uWord		wLength;
++} UPACKED usb_device_request_t;
++
++#define UT_GET_DIR(a) ((a) & 0x80)
++#define UT_WRITE		0x00
++#define UT_READ			0x80
++
++#define UT_GET_TYPE(a) ((a) & 0x60)
++#define UT_STANDARD		0x00
++#define UT_CLASS		0x20
++#define UT_VENDOR		0x40
++
++#define UT_GET_RECIPIENT(a) ((a) & 0x1f)
++#define UT_DEVICE		0x00
++#define UT_INTERFACE		0x01
++#define UT_ENDPOINT		0x02
++#define UT_OTHER		0x03
++
++#define UT_READ_DEVICE		(UT_READ  | UT_STANDARD | UT_DEVICE)
++#define UT_READ_INTERFACE	(UT_READ  | UT_STANDARD | UT_INTERFACE)
++#define UT_READ_ENDPOINT	(UT_READ  | UT_STANDARD | UT_ENDPOINT)
++#define UT_WRITE_DEVICE		(UT_WRITE | UT_STANDARD | UT_DEVICE)
++#define UT_WRITE_INTERFACE	(UT_WRITE | UT_STANDARD | UT_INTERFACE)
++#define UT_WRITE_ENDPOINT	(UT_WRITE | UT_STANDARD | UT_ENDPOINT)
++#define UT_READ_CLASS_DEVICE	(UT_READ  | UT_CLASS | UT_DEVICE)
++#define UT_READ_CLASS_INTERFACE	(UT_READ  | UT_CLASS | UT_INTERFACE)
++#define UT_READ_CLASS_OTHER	(UT_READ  | UT_CLASS | UT_OTHER)
++#define UT_READ_CLASS_ENDPOINT	(UT_READ  | UT_CLASS | UT_ENDPOINT)
++#define UT_WRITE_CLASS_DEVICE	(UT_WRITE | UT_CLASS | UT_DEVICE)
++#define UT_WRITE_CLASS_INTERFACE (UT_WRITE | UT_CLASS | UT_INTERFACE)
++#define UT_WRITE_CLASS_OTHER	(UT_WRITE | UT_CLASS | UT_OTHER)
++#define UT_WRITE_CLASS_ENDPOINT	(UT_WRITE | UT_CLASS | UT_ENDPOINT)
++#define UT_READ_VENDOR_DEVICE	(UT_READ  | UT_VENDOR | UT_DEVICE)
++#define UT_READ_VENDOR_INTERFACE (UT_READ  | UT_VENDOR | UT_INTERFACE)
++#define UT_READ_VENDOR_OTHER	(UT_READ  | UT_VENDOR | UT_OTHER)
++#define UT_READ_VENDOR_ENDPOINT	(UT_READ  | UT_VENDOR | UT_ENDPOINT)
++#define UT_WRITE_VENDOR_DEVICE	(UT_WRITE | UT_VENDOR | UT_DEVICE)
++#define UT_WRITE_VENDOR_INTERFACE (UT_WRITE | UT_VENDOR | UT_INTERFACE)
++#define UT_WRITE_VENDOR_OTHER	(UT_WRITE | UT_VENDOR | UT_OTHER)
++#define UT_WRITE_VENDOR_ENDPOINT (UT_WRITE | UT_VENDOR | UT_ENDPOINT)
++
++/* Requests */
++#define UR_GET_STATUS		0x00
++#define  USTAT_STANDARD_STATUS  0x00
++#define  WUSTAT_WUSB_FEATURE    0x01
++#define  WUSTAT_CHANNEL_INFO    0x02
++#define  WUSTAT_RECEIVED_DATA   0x03
++#define  WUSTAT_MAS_AVAILABILITY 0x04
++#define  WUSTAT_CURRENT_TRANSMIT_POWER 0x05
++#define UR_CLEAR_FEATURE	0x01
++#define UR_SET_FEATURE		0x03
++#define UR_SET_AND_TEST_FEATURE 0x0c
++#define UR_SET_ADDRESS		0x05
++#define UR_GET_DESCRIPTOR	0x06
++#define  UDESC_DEVICE		0x01
++#define  UDESC_CONFIG		0x02
++#define  UDESC_STRING		0x03
++#define  UDESC_INTERFACE	0x04
++#define  UDESC_ENDPOINT		0x05
++#define  UDESC_SS_USB_COMPANION	0x30
++#define  UDESC_DEVICE_QUALIFIER	0x06
++#define  UDESC_OTHER_SPEED_CONFIGURATION 0x07
++#define  UDESC_INTERFACE_POWER	0x08
++#define  UDESC_OTG		0x09
++#define  WUDESC_SECURITY	0x0c
++#define  WUDESC_KEY		0x0d
++#define   WUD_GET_KEY_INDEX(_wValue_) ((_wValue_) & 0xf)
++#define   WUD_GET_KEY_TYPE(_wValue_) (((_wValue_) & 0x30) >> 4)
++#define    WUD_KEY_TYPE_ASSOC    0x01
++#define    WUD_KEY_TYPE_GTK      0x02
++#define   WUD_GET_KEY_ORIGIN(_wValue_) (((_wValue_) & 0x40) >> 6)
++#define    WUD_KEY_ORIGIN_HOST   0x00
++#define    WUD_KEY_ORIGIN_DEVICE 0x01
++#define  WUDESC_ENCRYPTION_TYPE	0x0e
++#define  WUDESC_BOS		0x0f
++#define  WUDESC_DEVICE_CAPABILITY 0x10
++#define  WUDESC_WIRELESS_ENDPOINT_COMPANION 0x11
++#define  UDESC_BOS		0x0f
++#define  UDESC_DEVICE_CAPABILITY 0x10
++#define  UDESC_CS_DEVICE	0x21	/* class specific */
++#define  UDESC_CS_CONFIG	0x22
++#define  UDESC_CS_STRING	0x23
++#define  UDESC_CS_INTERFACE	0x24
++#define  UDESC_CS_ENDPOINT	0x25
++#define  UDESC_HUB		0x29
++#define UR_SET_DESCRIPTOR	0x07
++#define UR_GET_CONFIG		0x08
++#define UR_SET_CONFIG		0x09
++#define UR_GET_INTERFACE	0x0a
++#define UR_SET_INTERFACE	0x0b
++#define UR_SYNCH_FRAME		0x0c
++#define WUR_SET_ENCRYPTION      0x0d
++#define WUR_GET_ENCRYPTION	0x0e
++#define WUR_SET_HANDSHAKE	0x0f
++#define WUR_GET_HANDSHAKE	0x10
++#define WUR_SET_CONNECTION	0x11
++#define WUR_SET_SECURITY_DATA	0x12
++#define WUR_GET_SECURITY_DATA	0x13
++#define WUR_SET_WUSB_DATA	0x14
++#define  WUDATA_DRPIE_INFO	0x01
++#define  WUDATA_TRANSMIT_DATA	0x02
++#define  WUDATA_TRANSMIT_PARAMS	0x03
++#define  WUDATA_RECEIVE_PARAMS	0x04
++#define  WUDATA_TRANSMIT_POWER	0x05
++#define WUR_LOOPBACK_DATA_WRITE	0x15
++#define WUR_LOOPBACK_DATA_READ	0x16
++#define WUR_SET_INTERFACE_DS	0x17
++
++/* Feature numbers */
++#define UF_ENDPOINT_HALT	0
++#define UF_DEVICE_REMOTE_WAKEUP	1
++#define UF_TEST_MODE		2
++#define UF_DEVICE_B_HNP_ENABLE	3
++#define UF_DEVICE_A_HNP_SUPPORT	4
++#define UF_DEVICE_A_ALT_HNP_SUPPORT 5
++#define WUF_WUSB		3
++#define  WUF_TX_DRPIE		0x0
++#define  WUF_DEV_XMIT_PACKET	0x1
++#define  WUF_COUNT_PACKETS	0x2
++#define  WUF_CAPTURE_PACKETS	0x3
++#define UF_FUNCTION_SUSPEND	0
++#define UF_U1_ENABLE		48
++#define UF_U2_ENABLE		49
++#define UF_LTM_ENABLE		50
++
++/* Class requests from the USB 2.0 hub spec, table 11-15 */
++#define UCR_CLEAR_HUB_FEATURE		(0x2000 | UR_CLEAR_FEATURE)
++#define UCR_CLEAR_PORT_FEATURE		(0x2300 | UR_CLEAR_FEATURE)
++#define UCR_GET_HUB_DESCRIPTOR		(0xa000 | UR_GET_DESCRIPTOR)
++#define UCR_GET_HUB_STATUS		(0xa000 | UR_GET_STATUS)
++#define UCR_GET_PORT_STATUS		(0xa300 | UR_GET_STATUS)
++#define UCR_SET_HUB_FEATURE		(0x2000 | UR_SET_FEATURE)
++#define UCR_SET_PORT_FEATURE		(0x2300 | UR_SET_FEATURE)
++#define UCR_SET_AND_TEST_PORT_FEATURE	(0xa300 | UR_SET_AND_TEST_FEATURE)
++
++#ifdef _MSC_VER
++#include <pshpack1.h>
++#endif
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uByte		bDescriptorSubtype;
++} UPACKED usb_descriptor_t;
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++} UPACKED usb_descriptor_header_t;
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uWord		bcdUSB;
++#define UD_USB_2_0		0x0200
++#define UD_IS_USB2(d) (UGETW((d)->bcdUSB) >= UD_USB_2_0)
++	uByte		bDeviceClass;
++	uByte		bDeviceSubClass;
++	uByte		bDeviceProtocol;
++	uByte		bMaxPacketSize;
++	/* The fields below are not part of the initial descriptor. */
++	uWord		idVendor;
++	uWord		idProduct;
++	uWord		bcdDevice;
++	uByte		iManufacturer;
++	uByte		iProduct;
++	uByte		iSerialNumber;
++	uByte		bNumConfigurations;
++} UPACKED usb_device_descriptor_t;
++#define USB_DEVICE_DESCRIPTOR_SIZE 18
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uWord		wTotalLength;
++	uByte		bNumInterface;
++	uByte		bConfigurationValue;
++	uByte		iConfiguration;
++#define UC_ATT_ONE		(1 << 7)	/* must be set */
++#define UC_ATT_SELFPOWER	(1 << 6)	/* self powered */
++#define UC_ATT_WAKEUP		(1 << 5)	/* can wakeup */
++#define UC_ATT_BATTERY		(1 << 4)	/* battery powered */
++	uByte		bmAttributes;
++#define UC_BUS_POWERED		0x80
++#define UC_SELF_POWERED		0x40
++#define UC_REMOTE_WAKEUP	0x20
++	uByte		bMaxPower; /* max current in 2 mA units */
++#define UC_POWER_FACTOR 2
++} UPACKED usb_config_descriptor_t;
++#define USB_CONFIG_DESCRIPTOR_SIZE 9
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uByte		bInterfaceNumber;
++	uByte		bAlternateSetting;
++	uByte		bNumEndpoints;
++	uByte		bInterfaceClass;
++	uByte		bInterfaceSubClass;
++	uByte		bInterfaceProtocol;
++	uByte		iInterface;
++} UPACKED usb_interface_descriptor_t;
++#define USB_INTERFACE_DESCRIPTOR_SIZE 9
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uByte		bEndpointAddress;
++#define UE_GET_DIR(a)	((a) & 0x80)
++#define UE_SET_DIR(a,d)	((a) | (((d)&1) << 7))
++#define UE_DIR_IN	0x80
++#define UE_DIR_OUT	0x00
++#define UE_ADDR		0x0f
++#define UE_GET_ADDR(a)	((a) & UE_ADDR)
++	uByte		bmAttributes;
++#define UE_XFERTYPE	0x03
++#define  UE_CONTROL	0x00
++#define  UE_ISOCHRONOUS	0x01
++#define  UE_BULK	0x02
++#define  UE_INTERRUPT	0x03
++#define UE_GET_XFERTYPE(a)	((a) & UE_XFERTYPE)
++#define UE_ISO_TYPE	0x0c
++#define  UE_ISO_ASYNC	0x04
++#define  UE_ISO_ADAPT	0x08
++#define  UE_ISO_SYNC	0x0c
++#define UE_GET_ISO_TYPE(a)	((a) & UE_ISO_TYPE)
++	uWord		wMaxPacketSize;
++	uByte		bInterval;
++} UPACKED usb_endpoint_descriptor_t;
++#define USB_ENDPOINT_DESCRIPTOR_SIZE 7
++
++typedef struct ss_endpoint_companion_descriptor {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte bMaxBurst;
++#define USSE_GET_MAX_STREAMS(a)		((a) & 0x1f)
++#define USSE_SET_MAX_STREAMS(a, b)	((a) | ((b) & 0x1f))
++#define USSE_GET_MAX_PACKET_NUM(a)	((a) & 0x03)
++#define USSE_SET_MAX_PACKET_NUM(a, b)	((a) | ((b) & 0x03))
++	uByte bmAttributes;
++	uWord wBytesPerInterval;
++} UPACKED ss_endpoint_companion_descriptor_t;
++#define USB_SS_ENDPOINT_COMPANION_DESCRIPTOR_SIZE 6
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uWord		bString[127];
++} UPACKED usb_string_descriptor_t;
++#define USB_MAX_STRING_LEN 128
++#define USB_LANGUAGE_TABLE 0	/* # of the string language id table */
++
++/* Hub specific request */
++#define UR_GET_BUS_STATE	0x02
++#define UR_CLEAR_TT_BUFFER	0x08
++#define UR_RESET_TT		0x09
++#define UR_GET_TT_STATE		0x0a
++#define UR_STOP_TT		0x0b
++
++/* Hub features */
++#define UHF_C_HUB_LOCAL_POWER	0
++#define UHF_C_HUB_OVER_CURRENT	1
++#define UHF_PORT_CONNECTION	0
++#define UHF_PORT_ENABLE		1
++#define UHF_PORT_SUSPEND	2
++#define UHF_PORT_OVER_CURRENT	3
++#define UHF_PORT_RESET		4
++#define UHF_PORT_L1		5
++#define UHF_PORT_POWER		8
++#define UHF_PORT_LOW_SPEED	9
++#define UHF_PORT_HIGH_SPEED	10
++#define UHF_C_PORT_CONNECTION	16
++#define UHF_C_PORT_ENABLE	17
++#define UHF_C_PORT_SUSPEND	18
++#define UHF_C_PORT_OVER_CURRENT	19
++#define UHF_C_PORT_RESET	20
++#define UHF_C_PORT_L1		23
++#define UHF_PORT_TEST		21
++#define UHF_PORT_INDICATOR	22
++
++typedef struct {
++	uByte		bDescLength;
++	uByte		bDescriptorType;
++	uByte		bNbrPorts;
++	uWord		wHubCharacteristics;
++#define UHD_PWR			0x0003
++#define  UHD_PWR_GANGED		0x0000
++#define  UHD_PWR_INDIVIDUAL	0x0001
++#define  UHD_PWR_NO_SWITCH	0x0002
++#define UHD_COMPOUND		0x0004
++#define UHD_OC			0x0018
++#define  UHD_OC_GLOBAL		0x0000
++#define  UHD_OC_INDIVIDUAL	0x0008
++#define  UHD_OC_NONE		0x0010
++#define UHD_TT_THINK		0x0060
++#define  UHD_TT_THINK_8		0x0000
++#define  UHD_TT_THINK_16	0x0020
++#define  UHD_TT_THINK_24	0x0040
++#define  UHD_TT_THINK_32	0x0060
++#define UHD_PORT_IND		0x0080
++	uByte		bPwrOn2PwrGood;	/* delay in 2 ms units */
++#define UHD_PWRON_FACTOR 2
++	uByte		bHubContrCurrent;
++	uByte		DeviceRemovable[32]; /* max 255 ports */
++#define UHD_NOT_REMOV(desc, i) \
++    (((desc)->DeviceRemovable[(i)/8] >> ((i) % 8)) & 1)
++	/* deprecated */ uByte		PortPowerCtrlMask[1];
++} UPACKED usb_hub_descriptor_t;
++#define USB_HUB_DESCRIPTOR_SIZE 9 /* includes deprecated PortPowerCtrlMask */
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uWord		bcdUSB;
++	uByte		bDeviceClass;
++	uByte		bDeviceSubClass;
++	uByte		bDeviceProtocol;
++	uByte		bMaxPacketSize0;
++	uByte		bNumConfigurations;
++	uByte		bReserved;
++} UPACKED usb_device_qualifier_t;
++#define USB_DEVICE_QUALIFIER_SIZE 10
++
++typedef struct {
++	uByte		bLength;
++	uByte		bDescriptorType;
++	uByte		bmAttributes;
++#define UOTG_SRP	0x01
++#define UOTG_HNP	0x02
++} UPACKED usb_otg_descriptor_t;
++
++/* OTG feature selectors */
++#define UOTG_B_HNP_ENABLE	3
++#define UOTG_A_HNP_SUPPORT	4
++#define UOTG_A_ALT_HNP_SUPPORT	5
++
++typedef struct {
++	uWord		wStatus;
++/* Device status flags */
++#define UDS_SELF_POWERED		0x0001
++#define UDS_REMOTE_WAKEUP		0x0002
++/* Endpoint status flags */
++#define UES_HALT			0x0001
++} UPACKED usb_status_t;
++
++typedef struct {
++	uWord		wHubStatus;
++#define UHS_LOCAL_POWER			0x0001
++#define UHS_OVER_CURRENT		0x0002
++	uWord		wHubChange;
++} UPACKED usb_hub_status_t;
++
++typedef struct {
++	uWord		wPortStatus;
++#define UPS_CURRENT_CONNECT_STATUS	0x0001
++#define UPS_PORT_ENABLED		0x0002
++#define UPS_SUSPEND			0x0004
++#define UPS_OVERCURRENT_INDICATOR	0x0008
++#define UPS_RESET			0x0010
++#define UPS_PORT_POWER			0x0100
++#define UPS_LOW_SPEED			0x0200
++#define UPS_HIGH_SPEED			0x0400
++#define UPS_PORT_TEST			0x0800
++#define UPS_PORT_INDICATOR		0x1000
++	uWord		wPortChange;
++#define UPS_C_CONNECT_STATUS		0x0001
++#define UPS_C_PORT_ENABLED		0x0002
++#define UPS_C_SUSPEND			0x0004
++#define UPS_C_OVERCURRENT_INDICATOR	0x0008
++#define UPS_C_PORT_RESET		0x0010
++} UPACKED usb_port_status_t;
++
++#ifdef _MSC_VER
++#include <poppack.h>
++#endif
++
++/* Device class codes */
++#define UDCLASS_IN_INTERFACE	0x00
++#define UDCLASS_COMM		0x02
++#define UDCLASS_HUB		0x09
++#define  UDSUBCLASS_HUB		0x00
++#define  UDPROTO_FSHUB		0x00
++#define  UDPROTO_HSHUBSTT	0x01
++#define  UDPROTO_HSHUBMTT	0x02
++#define UDCLASS_DIAGNOSTIC	0xdc
++#define UDCLASS_WIRELESS	0xe0
++#define  UDSUBCLASS_RF		0x01
++#define   UDPROTO_BLUETOOTH	0x01
++#define UDCLASS_VENDOR		0xff
++
++/* Interface class codes */
++#define UICLASS_UNSPEC		0x00
++
++#define UICLASS_AUDIO		0x01
++#define  UISUBCLASS_AUDIOCONTROL	1
++#define  UISUBCLASS_AUDIOSTREAM		2
++#define  UISUBCLASS_MIDISTREAM		3
++
++#define UICLASS_CDC		0x02 /* communication */
++#define  UISUBCLASS_DIRECT_LINE_CONTROL_MODEL	1
++#define  UISUBCLASS_ABSTRACT_CONTROL_MODEL	2
++#define  UISUBCLASS_TELEPHONE_CONTROL_MODEL	3
++#define  UISUBCLASS_MULTICHANNEL_CONTROL_MODEL	4
++#define  UISUBCLASS_CAPI_CONTROLMODEL		5
++#define  UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL 6
++#define  UISUBCLASS_ATM_NETWORKING_CONTROL_MODEL 7
++#define   UIPROTO_CDC_AT			1
++
++#define UICLASS_HID		0x03
++#define  UISUBCLASS_BOOT	1
++#define  UIPROTO_BOOT_KEYBOARD	1
++
++#define UICLASS_PHYSICAL	0x05
++
++#define UICLASS_IMAGE		0x06
++
++#define UICLASS_PRINTER		0x07
++#define  UISUBCLASS_PRINTER	1
++#define  UIPROTO_PRINTER_UNI	1
++#define  UIPROTO_PRINTER_BI	2
++#define  UIPROTO_PRINTER_1284	3
++
++#define UICLASS_MASS		0x08
++#define  UISUBCLASS_RBC		1
++#define  UISUBCLASS_SFF8020I	2
++#define  UISUBCLASS_QIC157	3
++#define  UISUBCLASS_UFI		4
++#define  UISUBCLASS_SFF8070I	5
++#define  UISUBCLASS_SCSI	6
++#define  UIPROTO_MASS_CBI_I	0
++#define  UIPROTO_MASS_CBI	1
++#define  UIPROTO_MASS_BBB_OLD	2	/* Not in the spec anymore */
++#define  UIPROTO_MASS_BBB	80	/* 'P' for the Iomega Zip drive */
++
++#define UICLASS_HUB		0x09
++#define  UISUBCLASS_HUB		0
++#define  UIPROTO_FSHUB		0
++#define  UIPROTO_HSHUBSTT	0 /* Yes, same as previous */
++#define  UIPROTO_HSHUBMTT	1
++
++#define UICLASS_CDC_DATA	0x0a
++#define  UISUBCLASS_DATA		0
++#define   UIPROTO_DATA_ISDNBRI		0x30    /* Physical iface */
++#define   UIPROTO_DATA_HDLC		0x31    /* HDLC */
++#define   UIPROTO_DATA_TRANSPARENT	0x32    /* Transparent */
++#define   UIPROTO_DATA_Q921M		0x50    /* Management for Q921 */
++#define   UIPROTO_DATA_Q921		0x51    /* Data for Q921 */
++#define   UIPROTO_DATA_Q921TM		0x52    /* TEI multiplexer for Q921 */
++#define   UIPROTO_DATA_V42BIS		0x90    /* Data compression */
++#define   UIPROTO_DATA_Q931		0x91    /* Euro-ISDN */
++#define   UIPROTO_DATA_V120		0x92    /* V.24 rate adaption */
++#define   UIPROTO_DATA_CAPI		0x93    /* CAPI 2.0 commands */
++#define   UIPROTO_DATA_HOST_BASED	0xfd    /* Host based driver */
++#define   UIPROTO_DATA_PUF		0xfe    /* see Prot. Unit Func. Desc.*/
++#define   UIPROTO_DATA_VENDOR		0xff    /* Vendor specific */
++
++#define UICLASS_SMARTCARD	0x0b
++
++/*#define UICLASS_FIRM_UPD	0x0c*/
++
++#define UICLASS_SECURITY	0x0d
++
++#define UICLASS_DIAGNOSTIC	0xdc
++
++#define UICLASS_WIRELESS	0xe0
++#define  UISUBCLASS_RF			0x01
++#define   UIPROTO_BLUETOOTH		0x01
++
++#define UICLASS_APPL_SPEC	0xfe
++#define  UISUBCLASS_FIRMWARE_DOWNLOAD	1
++#define  UISUBCLASS_IRDA		2
++#define  UIPROTO_IRDA			0
++
++#define UICLASS_VENDOR		0xff
++
++#define USB_HUB_MAX_DEPTH 5
++
++/*
++ * Minimum time a device needs to be powered down to go through
++ * a power cycle.  XXX Are these time in the spec?
++ */
++#define USB_POWER_DOWN_TIME	200 /* ms */
++#define USB_PORT_POWER_DOWN_TIME	100 /* ms */
++
++#if 0
++/* These are the values from the spec. */
++#define USB_PORT_RESET_DELAY	10  /* ms */
++#define USB_PORT_ROOT_RESET_DELAY 50  /* ms */
++#define USB_PORT_RESET_RECOVERY	10  /* ms */
++#define USB_PORT_POWERUP_DELAY	100 /* ms */
++#define USB_SET_ADDRESS_SETTLE	2   /* ms */
++#define USB_RESUME_DELAY	(20*5)  /* ms */
++#define USB_RESUME_WAIT		10  /* ms */
++#define USB_RESUME_RECOVERY	10  /* ms */
++#define USB_EXTRA_POWER_UP_TIME	0   /* ms */
++#else
++/* Allow for marginal (i.e. non-conforming) devices. */
++#define USB_PORT_RESET_DELAY	50  /* ms */
++#define USB_PORT_ROOT_RESET_DELAY 250  /* ms */
++#define USB_PORT_RESET_RECOVERY	250  /* ms */
++#define USB_PORT_POWERUP_DELAY	300 /* ms */
++#define USB_SET_ADDRESS_SETTLE	10  /* ms */
++#define USB_RESUME_DELAY	(50*5)  /* ms */
++#define USB_RESUME_WAIT		50  /* ms */
++#define USB_RESUME_RECOVERY	50  /* ms */
++#define USB_EXTRA_POWER_UP_TIME	20  /* ms */
++#endif
++
++#define USB_MIN_POWER		100 /* mA */
++#define USB_MAX_POWER		500 /* mA */
++
++#define USB_BUS_RESET_DELAY	100 /* ms XXX?*/
++
++#define USB_UNCONFIG_NO 0
++#define USB_UNCONFIG_INDEX (-1)
++
++/*** ioctl() related stuff ***/
++
++struct usb_ctl_request {
++	int	ucr_addr;
++	usb_device_request_t ucr_request;
++	void	*ucr_data;
++	int	ucr_flags;
++#define USBD_SHORT_XFER_OK	0x04	/* allow short reads */
++	int	ucr_actlen;		/* actual length transferred */
++};
++
++struct usb_alt_interface {
++	int	uai_config_index;
++	int	uai_interface_index;
++	int	uai_alt_no;
++};
++
++#define USB_CURRENT_CONFIG_INDEX (-1)
++#define USB_CURRENT_ALT_INDEX (-1)
++
++struct usb_config_desc {
++	int	ucd_config_index;
++	usb_config_descriptor_t ucd_desc;
++};
++
++struct usb_interface_desc {
++	int	uid_config_index;
++	int	uid_interface_index;
++	int	uid_alt_index;
++	usb_interface_descriptor_t uid_desc;
++};
++
++struct usb_endpoint_desc {
++	int	ued_config_index;
++	int	ued_interface_index;
++	int	ued_alt_index;
++	int	ued_endpoint_index;
++	usb_endpoint_descriptor_t ued_desc;
++};
++
++struct usb_full_desc {
++	int	ufd_config_index;
++	u_int	ufd_size;
++	u_char	*ufd_data;
++};
++
++struct usb_string_desc {
++	int	usd_string_index;
++	int	usd_language_id;
++	usb_string_descriptor_t usd_desc;
++};
++
++struct usb_ctl_report_desc {
++	int	ucrd_size;
++	u_char	ucrd_data[1024];	/* filled data size will vary */
++};
++
++typedef struct { u_int32_t cookie; } usb_event_cookie_t;
++
++#define USB_MAX_DEVNAMES 4
++#define USB_MAX_DEVNAMELEN 16
++struct usb_device_info {
++	u_int8_t	udi_bus;
++	u_int8_t	udi_addr;	/* device address */
++	usb_event_cookie_t udi_cookie;
++	char		udi_product[USB_MAX_STRING_LEN];
++	char		udi_vendor[USB_MAX_STRING_LEN];
++	char		udi_release[8];
++	u_int16_t	udi_productNo;
++	u_int16_t	udi_vendorNo;
++	u_int16_t	udi_releaseNo;
++	u_int8_t	udi_class;
++	u_int8_t	udi_subclass;
++	u_int8_t	udi_protocol;
++	u_int8_t	udi_config;
++	u_int8_t	udi_speed;
++#define USB_SPEED_UNKNOWN	0
++#define USB_SPEED_LOW		1
++#define USB_SPEED_FULL		2
++#define USB_SPEED_HIGH		3
++#define USB_SPEED_VARIABLE	4
++#define USB_SPEED_SUPER		5
++	int		udi_power;	/* power consumption in mA, 0 if selfpowered */
++	int		udi_nports;
++	char		udi_devnames[USB_MAX_DEVNAMES][USB_MAX_DEVNAMELEN];
++	u_int8_t	udi_ports[16];/* hub only: addresses of devices on ports */
++#define USB_PORT_ENABLED 0xff
++#define USB_PORT_SUSPENDED 0xfe
++#define USB_PORT_POWERED 0xfd
++#define USB_PORT_DISABLED 0xfc
++};
++
++struct usb_ctl_report {
++	int	ucr_report;
++	u_char	ucr_data[1024];	/* filled data size will vary */
++};
++
++struct usb_device_stats {
++	u_long	uds_requests[4];	/* indexed by transfer type UE_* */
++};
++
++#define WUSB_MIN_IE			0x80
++#define WUSB_WCTA_IE			0x80
++#define WUSB_WCONNECTACK_IE		0x81
++#define WUSB_WHOSTINFO_IE		0x82
++#define  WUHI_GET_CA(_bmAttributes_) ((_bmAttributes_) & 0x3)
++#define   WUHI_CA_RECONN		0x00
++#define   WUHI_CA_LIMITED		0x01
++#define   WUHI_CA_ALL			0x03
++#define  WUHI_GET_MLSI(_bmAttributes_) (((_bmAttributes_) & 0x38) >> 3)
++#define WUSB_WCHCHANGEANNOUNCE_IE	0x83
++#define WUSB_WDEV_DISCONNECT_IE		0x84
++#define WUSB_WHOST_DISCONNECT_IE	0x85
++#define WUSB_WRELEASE_CHANNEL_IE	0x86
++#define WUSB_WWORK_IE			0x87
++#define WUSB_WCHANNEL_STOP_IE		0x88
++#define WUSB_WDEV_KEEPALIVE_IE		0x89
++#define WUSB_WISOCH_DISCARD_IE		0x8A
++#define WUSB_WRESETDEVICE_IE		0x8B
++#define WUSB_WXMIT_PACKET_ADJUST_IE	0x8C
++#define WUSB_MAX_IE			0x8C
++
++/* Device Notification Types */
++
++#define WUSB_DN_MIN			0x01
++#define WUSB_DN_CONNECT			0x01
++# define WUSB_DA_OLDCONN	0x00
++# define WUSB_DA_NEWCONN	0x01
++# define WUSB_DA_SELF_BEACON	0x02
++# define WUSB_DA_DIR_BEACON	0x04
++# define WUSB_DA_NO_BEACON	0x06
++#define WUSB_DN_DISCONNECT		0x02
++#define WUSB_DN_EPRDY			0x03
++#define WUSB_DN_MASAVAILCHANGED		0x04
++#define WUSB_DN_REMOTEWAKEUP		0x05
++#define WUSB_DN_SLEEP			0x06
++#define WUSB_DN_ALIVE			0x07
++#define WUSB_DN_MAX			0x07
++
++#ifdef _MSC_VER
++#include <pshpack1.h>
++#endif
++
++/* WUSB Handshake Data.  Used during the SET/GET HANDSHAKE requests */
++typedef struct wusb_hndshk_data {
++	uByte bMessageNumber;
++	uByte bStatus;
++	uByte tTKID[3];
++	uByte bReserved;
++	uByte CDID[16];
++	uByte Nonce[16];
++	uByte MIC[8];
++} UPACKED wusb_hndshk_data_t;
++#define WUSB_HANDSHAKE_LEN_FOR_MIC	38
++
++/* WUSB Connection Context */
++typedef struct wusb_conn_context {
++	uByte CHID [16];
++	uByte CDID [16];
++	uByte CK [16];
++} UPACKED wusb_conn_context_t;
++
++/* WUSB Security Descriptor */
++typedef struct wusb_security_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++	uWord wTotalLength;
++	uByte bNumEncryptionTypes;
++} UPACKED wusb_security_desc_t;
++
++/* WUSB Encryption Type Descriptor */
++typedef struct wusb_encrypt_type_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++
++	uByte bEncryptionType;
++#define WUETD_UNSECURE		0
++#define WUETD_WIRED		1
++#define WUETD_CCM_1		2
++#define WUETD_RSA_1		3
++
++	uByte bEncryptionValue;
++	uByte bAuthKeyIndex;
++} UPACKED wusb_encrypt_type_desc_t;
++
++/* WUSB Key Descriptor */
++typedef struct wusb_key_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte tTKID[3];
++	uByte bReserved;
++	uByte KeyData[1];	/* variable length */
++} UPACKED wusb_key_desc_t;
++
++/* WUSB BOS Descriptor (Binary device Object Store) */
++typedef struct wusb_bos_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++	uWord wTotalLength;
++	uByte bNumDeviceCaps;
++} UPACKED wusb_bos_desc_t;
++
++#define USB_DEVICE_CAPABILITY_20_EXTENSION	0x02
++typedef struct usb_dev_cap_20_ext_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte bDevCapabilityType;
++#define USB_20_EXT_LPM				0x02
++	uDWord bmAttributes;
++} UPACKED usb_dev_cap_20_ext_desc_t;
++
++#define USB_DEVICE_CAPABILITY_SS_USB		0x03
++typedef struct usb_dev_cap_ss_usb {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte bDevCapabilityType;
++#define USB_DC_SS_USB_LTM_CAPABLE		0x02
++	uByte bmAttributes;
++#define USB_DC_SS_USB_SPEED_SUPPORT_LOW		0x01
++#define USB_DC_SS_USB_SPEED_SUPPORT_FULL	0x02
++#define USB_DC_SS_USB_SPEED_SUPPORT_HIGH	0x04
++#define USB_DC_SS_USB_SPEED_SUPPORT_SS		0x08
++	uWord wSpeedsSupported;
++	uByte bFunctionalitySupport;
++	uByte bU1DevExitLat;
++	uWord wU2DevExitLat;
++} UPACKED usb_dev_cap_ss_usb_t;
++
++#define USB_DEVICE_CAPABILITY_CONTAINER_ID	0x04
++typedef struct usb_dev_cap_container_id {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte bDevCapabilityType;
++	uByte bReserved;
++	uByte containerID[16];
++} UPACKED usb_dev_cap_container_id_t;
++
++/* Device Capability Type Codes */
++#define WUSB_DEVICE_CAPABILITY_WIRELESS_USB 0x01
++
++/* Device Capability Descriptor */
++typedef struct wusb_dev_cap_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte bDevCapabilityType;
++	uByte caps[1];	/* Variable length */
++} UPACKED wusb_dev_cap_desc_t;
++
++/* Device Capability Descriptor */
++typedef struct wusb_dev_cap_uwb_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte bDevCapabilityType;
++	uByte bmAttributes;
++	uWord wPHYRates;	/* Bitmap */
++	uByte bmTFITXPowerInfo;
++	uByte bmFFITXPowerInfo;
++	uWord bmBandGroup;
++	uByte bReserved;
++} UPACKED wusb_dev_cap_uwb_desc_t;
++
++/* Wireless USB Endpoint Companion Descriptor */
++typedef struct wusb_endpoint_companion_desc {
++	uByte bLength;
++	uByte bDescriptorType;
++	uByte bMaxBurst;
++	uByte bMaxSequence;
++	uWord wMaxStreamDelay;
++	uWord wOverTheAirPacketSize;
++	uByte bOverTheAirInterval;
++	uByte bmCompAttributes;
++} UPACKED wusb_endpoint_companion_desc_t;
++
++/* Wireless USB Numeric Association M1 Data Structure */
++typedef struct wusb_m1_data {
++	uByte version;
++	uWord langId;
++	uByte deviceFriendlyNameLength;
++	uByte sha_256_m3[32];
++	uByte deviceFriendlyName[256];
++} UPACKED wusb_m1_data_t;
++
++typedef struct wusb_m2_data {
++	uByte version;
++	uWord langId;
++	uByte hostFriendlyNameLength;
++	uByte pkh[384];
++	uByte hostFriendlyName[256];
++} UPACKED wusb_m2_data_t;
++
++typedef struct wusb_m3_data {
++	uByte pkd[384];
++	uByte nd;
++} UPACKED wusb_m3_data_t;
++
++typedef struct wusb_m4_data {
++	uDWord _attributeTypeIdAndLength_1;
++	uWord  associationTypeId;
++
++	uDWord _attributeTypeIdAndLength_2;
++	uWord  associationSubTypeId;
++
++	uDWord _attributeTypeIdAndLength_3;
++	uDWord length;
++
++	uDWord _attributeTypeIdAndLength_4;
++	uDWord associationStatus;
++
++	uDWord _attributeTypeIdAndLength_5;
++	uByte  chid[16];
++
++	uDWord _attributeTypeIdAndLength_6;
++	uByte  cdid[16];
++
++	uDWord _attributeTypeIdAndLength_7;
++	uByte  bandGroups[2];
++} UPACKED wusb_m4_data_t;
++
++#ifdef _MSC_VER
++#include <poppack.h>
++#endif
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* _USB_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/Makefile
+@@ -0,0 +1,85 @@
++#
++# Makefile for DWC_otg Highspeed USB controller driver
++#
++
++ifneq ($(KERNELRELEASE),)
++
++# Use the BUS_INTERFACE variable to compile the software for either
++# PCI(PCI_INTERFACE) or LM(LM_INTERFACE) bus.
++ifeq ($(BUS_INTERFACE),)
++#	BUS_INTERFACE = -DPCI_INTERFACE
++#	BUS_INTERFACE = -DLM_INTERFACE
++        BUS_INTERFACE = -DPLATFORM_INTERFACE
++endif
++
++#ccflags-y	+= -DDEBUG
++#ccflags-y	+= -DDWC_OTG_DEBUGLEV=1 # reduce common debug msgs
++
++# Use one of the following flags to compile the software in host-only or
++# device-only mode.
++#ccflags-y        += -DDWC_HOST_ONLY
++#ccflags-y        += -DDWC_DEVICE_ONLY
++
++ccflags-y	+= -Dlinux -DDWC_HS_ELECT_TST
++#ccflags-y	+= -DDWC_EN_ISOC
++ccflags-y   	+= -I$(srctree)/drivers/usb/host/dwc_common_port
++#ccflags-y   	+= -I$(PORTLIB)
++ccflags-y   	+= -DDWC_LINUX
++ccflags-y   	+= $(CFI)
++ccflags-y	+= $(BUS_INTERFACE)
++#ccflags-y	+= -DDWC_DEV_SRPCAP
++
++obj-$(CONFIG_USB_DWCOTG) += dwc_otg.o
++
++dwc_otg-objs	:= dwc_otg_driver.o dwc_otg_attr.o
++dwc_otg-objs	+= dwc_otg_cil.o dwc_otg_cil_intr.o
++dwc_otg-objs	+= dwc_otg_pcd_linux.o dwc_otg_pcd.o dwc_otg_pcd_intr.o
++dwc_otg-objs	+= dwc_otg_hcd.o dwc_otg_hcd_linux.o dwc_otg_hcd_intr.o dwc_otg_hcd_queue.o dwc_otg_hcd_ddma.o
++dwc_otg-objs	+= dwc_otg_adp.o
++dwc_otg-objs	+= dwc_otg_fiq_fsm.o
++ifneq ($(CONFIG_ARM64),y)
++dwc_otg-objs	+= dwc_otg_fiq_stub.o
++endif
++
++ifneq ($(CFI),)
++dwc_otg-objs	+= dwc_otg_cfi.o
++endif
++
++kernrelwd := $(subst ., ,$(KERNELRELEASE))
++kernrel3 := $(word 1,$(kernrelwd)).$(word 2,$(kernrelwd)).$(word 3,$(kernrelwd))
++
++ifneq ($(kernrel3),2.6.20)
++ccflags-y += $(CPPFLAGS)
++endif
++
++else
++
++PWD		:= $(shell pwd)
++PORTLIB		:= $(PWD)/../dwc_common_port
++
++# Command paths
++CTAGS		:= $(CTAGS)
++DOXYGEN		:= $(DOXYGEN)
++
++default: portlib
++	$(MAKE) -C$(KDIR) M=$(PWD) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
++
++install: default
++	$(MAKE) -C$(KDIR) M=$(PORTLIB) modules_install
++	$(MAKE) -C$(KDIR) M=$(PWD) modules_install
++
++portlib:
++	$(MAKE) -C$(KDIR) M=$(PORTLIB) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) modules
++	cp $(PORTLIB)/Module.symvers $(PWD)/
++
++docs:	$(wildcard *.[hc]) doc/doxygen.cfg
++	$(DOXYGEN) doc/doxygen.cfg
++
++tags:	$(wildcard *.[hc])
++	$(CTAGS) -e $(wildcard *.[hc]) $(wildcard linux/*.[hc]) $(wildcard $(KDIR)/include/linux/usb*.h)
++
++
++clean:
++	rm -rf   *.o *.ko .*cmd *.mod.c .tmp_versions Module.symvers
++
++endif
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/doc/doxygen.cfg
+@@ -0,0 +1,224 @@
++# Doxyfile 1.3.9.1
++
++#---------------------------------------------------------------------------
++# Project related configuration options
++#---------------------------------------------------------------------------
++PROJECT_NAME           = "DesignWare USB 2.0 OTG Controller (DWC_otg) Device Driver"
++PROJECT_NUMBER         = v3.00a
++OUTPUT_DIRECTORY       = ./doc/
++CREATE_SUBDIRS         = NO
++OUTPUT_LANGUAGE        = English
++BRIEF_MEMBER_DESC      = YES
++REPEAT_BRIEF           = YES
++ABBREVIATE_BRIEF       = "The $name class" \
++                         "The $name widget" \
++                         "The $name file" \
++                         is \
++                         provides \
++                         specifies \
++                         contains \
++                         represents \
++                         a \
++                         an \
++                         the
++ALWAYS_DETAILED_SEC    = NO
++INLINE_INHERITED_MEMB  = NO
++FULL_PATH_NAMES        = NO
++STRIP_FROM_PATH        =
++STRIP_FROM_INC_PATH    =
++SHORT_NAMES            = NO
++JAVADOC_AUTOBRIEF      = YES
++MULTILINE_CPP_IS_BRIEF = NO
++INHERIT_DOCS           = YES
++DISTRIBUTE_GROUP_DOC   = NO
++TAB_SIZE               = 8
++ALIASES                =
++OPTIMIZE_OUTPUT_FOR_C  = YES
++OPTIMIZE_OUTPUT_JAVA   = NO
++SUBGROUPING            = YES
++#---------------------------------------------------------------------------
++# Build related configuration options
++#---------------------------------------------------------------------------
++EXTRACT_ALL            = NO
++EXTRACT_PRIVATE        = YES
++EXTRACT_STATIC         = YES
++EXTRACT_LOCAL_CLASSES  = YES
++EXTRACT_LOCAL_METHODS  = NO
++HIDE_UNDOC_MEMBERS     = NO
++HIDE_UNDOC_CLASSES     = NO
++HIDE_FRIEND_COMPOUNDS  = NO
++HIDE_IN_BODY_DOCS      = NO
++INTERNAL_DOCS          = NO
++CASE_SENSE_NAMES       = NO
++HIDE_SCOPE_NAMES       = NO
++SHOW_INCLUDE_FILES     = YES
++INLINE_INFO            = YES
++SORT_MEMBER_DOCS       = NO
++SORT_BRIEF_DOCS        = NO
++SORT_BY_SCOPE_NAME     = NO
++GENERATE_TODOLIST      = YES
++GENERATE_TESTLIST      = YES
++GENERATE_BUGLIST       = YES
++GENERATE_DEPRECATEDLIST= YES
++ENABLED_SECTIONS       =
++MAX_INITIALIZER_LINES  = 30
++SHOW_USED_FILES        = YES
++SHOW_DIRECTORIES       = YES
++#---------------------------------------------------------------------------
++# configuration options related to warning and progress messages
++#---------------------------------------------------------------------------
++QUIET                  = YES
++WARNINGS               = YES
++WARN_IF_UNDOCUMENTED   = NO
++WARN_IF_DOC_ERROR      = YES
++WARN_FORMAT            = "$file:$line: $text"
++WARN_LOGFILE           =
++#---------------------------------------------------------------------------
++# configuration options related to the input files
++#---------------------------------------------------------------------------
++INPUT                  = .
++FILE_PATTERNS          = *.c \
++                         *.h \
++                         ./linux/*.c \
++                         ./linux/*.h
++RECURSIVE              = NO
++EXCLUDE                = ./test/ \
++                         ./dwc_otg/.AppleDouble/
++EXCLUDE_SYMLINKS       = YES
++EXCLUDE_PATTERNS       = *.mod.*
++EXAMPLE_PATH           =
++EXAMPLE_PATTERNS       = *
++EXAMPLE_RECURSIVE      = NO
++IMAGE_PATH             =
++INPUT_FILTER           =
++FILTER_PATTERNS        =
++FILTER_SOURCE_FILES    = NO
++#---------------------------------------------------------------------------
++# configuration options related to source browsing
++#---------------------------------------------------------------------------
++SOURCE_BROWSER         = YES
++INLINE_SOURCES         = NO
++STRIP_CODE_COMMENTS    = YES
++REFERENCED_BY_RELATION = NO
++REFERENCES_RELATION    = NO
++VERBATIM_HEADERS       = NO
++#---------------------------------------------------------------------------
++# configuration options related to the alphabetical class index
++#---------------------------------------------------------------------------
++ALPHABETICAL_INDEX     = NO
++COLS_IN_ALPHA_INDEX    = 5
++IGNORE_PREFIX          =
++#---------------------------------------------------------------------------
++# configuration options related to the HTML output
++#---------------------------------------------------------------------------
++GENERATE_HTML          = YES
++HTML_OUTPUT            = html
++HTML_FILE_EXTENSION    = .html
++HTML_HEADER            =
++HTML_FOOTER            =
++HTML_STYLESHEET        =
++HTML_ALIGN_MEMBERS     = YES
++GENERATE_HTMLHELP      = NO
++CHM_FILE               =
++HHC_LOCATION           =
++GENERATE_CHI           = NO
++BINARY_TOC             = NO
++TOC_EXPAND             = NO
++DISABLE_INDEX          = NO
++ENUM_VALUES_PER_LINE   = 4
++GENERATE_TREEVIEW      = YES
++TREEVIEW_WIDTH         = 250
++#---------------------------------------------------------------------------
++# configuration options related to the LaTeX output
++#---------------------------------------------------------------------------
++GENERATE_LATEX         = NO
++LATEX_OUTPUT           = latex
++LATEX_CMD_NAME         = latex
++MAKEINDEX_CMD_NAME     = makeindex
++COMPACT_LATEX          = NO
++PAPER_TYPE             = a4wide
++EXTRA_PACKAGES         =
++LATEX_HEADER           =
++PDF_HYPERLINKS         = NO
++USE_PDFLATEX           = NO
++LATEX_BATCHMODE        = NO
++LATEX_HIDE_INDICES     = NO
++#---------------------------------------------------------------------------
++# configuration options related to the RTF output
++#---------------------------------------------------------------------------
++GENERATE_RTF           = NO
++RTF_OUTPUT             = rtf
++COMPACT_RTF            = NO
++RTF_HYPERLINKS         = NO
++RTF_STYLESHEET_FILE    =
++RTF_EXTENSIONS_FILE    =
++#---------------------------------------------------------------------------
++# configuration options related to the man page output
++#---------------------------------------------------------------------------
++GENERATE_MAN           = NO
++MAN_OUTPUT             = man
++MAN_EXTENSION          = .3
++MAN_LINKS              = NO
++#---------------------------------------------------------------------------
++# configuration options related to the XML output
++#---------------------------------------------------------------------------
++GENERATE_XML           = NO
++XML_OUTPUT             = xml
++XML_SCHEMA             =
++XML_DTD                =
++XML_PROGRAMLISTING     = YES
++#---------------------------------------------------------------------------
++# configuration options for the AutoGen Definitions output
++#---------------------------------------------------------------------------
++GENERATE_AUTOGEN_DEF   = NO
++#---------------------------------------------------------------------------
++# configuration options related to the Perl module output
++#---------------------------------------------------------------------------
++GENERATE_PERLMOD       = NO
++PERLMOD_LATEX          = NO
++PERLMOD_PRETTY         = YES
++PERLMOD_MAKEVAR_PREFIX =
++#---------------------------------------------------------------------------
++# Configuration options related to the preprocessor
++#---------------------------------------------------------------------------
++ENABLE_PREPROCESSING   = YES
++MACRO_EXPANSION        = YES
++EXPAND_ONLY_PREDEF     = YES
++SEARCH_INCLUDES        = YES
++INCLUDE_PATH           =
++INCLUDE_FILE_PATTERNS  =
++PREDEFINED             = DEVICE_ATTR DWC_EN_ISOC
++EXPAND_AS_DEFINED      = DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW DWC_OTG_DEVICE_ATTR_BITFIELD_STORE DWC_OTG_DEVICE_ATTR_BITFIELD_RW DWC_OTG_DEVICE_ATTR_BITFIELD_RO DWC_OTG_DEVICE_ATTR_REG_SHOW DWC_OTG_DEVICE_ATTR_REG_STORE DWC_OTG_DEVICE_ATTR_REG32_RW DWC_OTG_DEVICE_ATTR_REG32_RO DWC_EN_ISOC
++SKIP_FUNCTION_MACROS   = NO
++#---------------------------------------------------------------------------
++# Configuration::additions related to external references
++#---------------------------------------------------------------------------
++TAGFILES               =
++GENERATE_TAGFILE       =
++ALLEXTERNALS           = NO
++EXTERNAL_GROUPS        = YES
++PERL_PATH              = /usr/bin/perl
++#---------------------------------------------------------------------------
++# Configuration options related to the dot tool
++#---------------------------------------------------------------------------
++CLASS_DIAGRAMS         = YES
++HIDE_UNDOC_RELATIONS   = YES
++HAVE_DOT               = NO
++CLASS_GRAPH            = YES
++COLLABORATION_GRAPH    = YES
++UML_LOOK               = NO
++TEMPLATE_RELATIONS     = NO
++INCLUDE_GRAPH          = YES
++INCLUDED_BY_GRAPH      = YES
++CALL_GRAPH             = NO
++GRAPHICAL_HIERARCHY    = YES
++DOT_IMAGE_FORMAT       = png
++DOT_PATH               =
++DOTFILE_DIRS           =
++MAX_DOT_GRAPH_DEPTH    = 1000
++GENERATE_LEGEND        = YES
++DOT_CLEANUP            = YES
++#---------------------------------------------------------------------------
++# Configuration::additions related to the search engine
++#---------------------------------------------------------------------------
++SEARCHENGINE           = NO
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dummy_audio.c
+@@ -0,0 +1,1574 @@
++/*
++ * zero.c -- Gadget Zero, for USB development
++ *
++ * Copyright (C) 2003-2004 David Brownell
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") as published by the Free Software
++ * Foundation, either version 2 of that License or (at your option) any
++ * later version.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++
++/*
++ * Gadget Zero only needs two bulk endpoints, and is an example of how you
++ * can write a hardware-agnostic gadget driver running inside a USB device.
++ *
++ * Hardware details are visible (see CONFIG_USB_ZERO_* below) but don't
++ * affect most of the driver.
++ *
++ * Use it with the Linux host/master side "usbtest" driver to get a basic
++ * functional test of your device-side usb stack, or with "usb-skeleton".
++ *
++ * It supports two similar configurations.  One sinks whatever the usb host
++ * writes, and in return sources zeroes.  The other loops whatever the host
++ * writes back, so the host can read it.  Module options include:
++ *
++ *   buflen=N		default N=4096, buffer size used
++ *   qlen=N		default N=32, how many buffers in the loopback queue
++ *   loopdefault	default false, list loopback config first
++ *
++ * Many drivers will only have one configuration, letting them be much
++ * simpler if they also don't support high speed operation (like this
++ * driver does).
++ */
++
++#include <linux/config.h>
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/delay.h>
++#include <linux/ioport.h>
++#include <linux/sched.h>
++#include <linux/slab.h>
++#include <linux/smp_lock.h>
++#include <linux/errno.h>
++#include <linux/init.h>
++#include <linux/timer.h>
++#include <linux/list.h>
++#include <linux/interrupt.h>
++#include <linux/uts.h>
++#include <linux/version.h>
++#include <linux/device.h>
++#include <linux/moduleparam.h>
++#include <linux/proc_fs.h>
++
++#include <asm/byteorder.h>
++#include <asm/io.h>
++#include <asm/irq.h>
++#include <asm/system.h>
++#include <asm/unaligned.h>
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
++# include <linux/usb/ch9.h>
++#else
++# include <linux/usb_ch9.h>
++#endif
++
++#include <linux/usb_gadget.h>
++
++
++/*-------------------------------------------------------------------------*/
++/*-------------------------------------------------------------------------*/
++
++
++static int utf8_to_utf16le(const char *s, u16 *cp, unsigned len)
++{
++	int	count = 0;
++	u8	c;
++	u16	uchar;
++
++	/* this insists on correct encodings, though not minimal ones.
++	 * BUT it currently rejects legit 4-byte UTF-8 code points,
++	 * which need surrogate pairs.  (Unicode 3.1 can use them.)
++	 */
++	while (len != 0 && (c = (u8) *s++) != 0) {
++		if (unlikely(c & 0x80)) {
++			// 2-byte sequence:
++			// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
++			if ((c & 0xe0) == 0xc0) {
++				uchar = (c & 0x1f) << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++			// 3-byte sequence (most CJKV characters):
++			// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
++			} else if ((c & 0xf0) == 0xe0) {
++				uchar = (c & 0x0f) << 12;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c << 6;
++
++				c = (u8) *s++;
++				if ((c & 0xc0) != 0xc0)
++					goto fail;
++				c &= 0x3f;
++				uchar |= c;
++
++				/* no bogus surrogates */
++				if (0xd800 <= uchar && uchar <= 0xdfff)
++					goto fail;
++
++			// 4-byte sequence (surrogate pairs, currently rare):
++			// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
++			//     = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
++			// (uuuuu = wwww + 1)
++			// FIXME accept the surrogate code points (only)
++
++			} else
++				goto fail;
++		} else
++			uchar = c;
++		put_unaligned (cpu_to_le16 (uchar), cp++);
++		count++;
++		len--;
++	}
++	return count;
++fail:
++	return -1;
++}
++
++
++/**
++ * usb_gadget_get_string - fill out a string descriptor
++ * @table: of c strings encoded using UTF-8
++ * @id: string id, from low byte of wValue in get string descriptor
++ * @buf: at least 256 bytes
++ *
++ * Finds the UTF-8 string matching the ID, and converts it into a
++ * string descriptor in utf16-le.
++ * Returns length of descriptor (always even) or negative errno
++ *
++ * If your driver needs stings in multiple languages, you'll probably
++ * "switch (wIndex) { ... }"  in your ep0 string descriptor logic,
++ * using this routine after choosing which set of UTF-8 strings to use.
++ * Note that US-ASCII is a strict subset of UTF-8; any string bytes with
++ * the eighth bit set will be multibyte UTF-8 characters, not ISO-8859/1
++ * characters (which are also widely used in C strings).
++ */
++int
++usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf)
++{
++	struct usb_string	*s;
++	int			len;
++
++	/* descriptor 0 has the language id */
++	if (id == 0) {
++		buf [0] = 4;
++		buf [1] = USB_DT_STRING;
++		buf [2] = (u8) table->language;
++		buf [3] = (u8) (table->language >> 8);
++		return 4;
++	}
++	for (s = table->strings; s && s->s; s++)
++		if (s->id == id)
++			break;
++
++	/* unrecognized: stall. */
++	if (!s || !s->s)
++		return -EINVAL;
++
++	/* string descriptors have length, tag, then UTF16-LE text */
++	len = min ((size_t) 126, strlen (s->s));
++	memset (buf + 2, 0, 2 * len);	/* zero all the bytes */
++	len = utf8_to_utf16le(s->s, (u16 *)&buf[2], len);
++	if (len < 0)
++		return -EINVAL;
++	buf [0] = (len + 1) * 2;
++	buf [1] = USB_DT_STRING;
++	return buf [0];
++}
++
++
++/*-------------------------------------------------------------------------*/
++/*-------------------------------------------------------------------------*/
++
++
++/**
++ * usb_descriptor_fillbuf - fill buffer with descriptors
++ * @buf: Buffer to be filled
++ * @buflen: Size of buf
++ * @src: Array of descriptor pointers, terminated by null pointer.
++ *
++ * Copies descriptors into the buffer, returning the length or a
++ * negative error code if they can't all be copied.  Useful when
++ * assembling descriptors for an associated set of interfaces used
++ * as part of configuring a composite device; or in other cases where
++ * sets of descriptors need to be marshaled.
++ */
++int
++usb_descriptor_fillbuf(void *buf, unsigned buflen,
++		const struct usb_descriptor_header **src)
++{
++	u8	*dest = buf;
++
++	if (!src)
++		return -EINVAL;
++
++	/* fill buffer from src[] until null descriptor ptr */
++	for (; 0 != *src; src++) {
++		unsigned		len = (*src)->bLength;
++
++		if (len > buflen)
++			return -EINVAL;
++		memcpy(dest, *src, len);
++		buflen -= len;
++		dest += len;
++	}
++	return dest - (u8 *)buf;
++}
++
++
++/**
++ * usb_gadget_config_buf - builts a complete configuration descriptor
++ * @config: Header for the descriptor, including characteristics such
++ *	as power requirements and number of interfaces.
++ * @desc: Null-terminated vector of pointers to the descriptors (interface,
++ *	endpoint, etc) defining all functions in this device configuration.
++ * @buf: Buffer for the resulting configuration descriptor.
++ * @length: Length of buffer.  If this is not big enough to hold the
++ *	entire configuration descriptor, an error code will be returned.
++ *
++ * This copies descriptors into the response buffer, building a descriptor
++ * for that configuration.  It returns the buffer length or a negative
++ * status code.  The config.wTotalLength field is set to match the length
++ * of the result, but other descriptor fields (including power usage and
++ * interface count) must be set by the caller.
++ *
++ * Gadget drivers could use this when constructing a config descriptor
++ * in response to USB_REQ_GET_DESCRIPTOR.  They will need to patch the
++ * resulting bDescriptorType value if USB_DT_OTHER_SPEED_CONFIG is needed.
++ */
++int usb_gadget_config_buf(
++	const struct usb_config_descriptor	*config,
++	void					*buf,
++	unsigned				length,
++	const struct usb_descriptor_header	**desc
++)
++{
++	struct usb_config_descriptor		*cp = buf;
++	int					len;
++
++	/* config descriptor first */
++	if (length < USB_DT_CONFIG_SIZE || !desc)
++		return -EINVAL;
++	*cp = *config;
++
++	/* then interface/endpoint/class/vendor/... */
++	len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8*)buf,
++			length - USB_DT_CONFIG_SIZE, desc);
++	if (len < 0)
++		return len;
++	len += USB_DT_CONFIG_SIZE;
++	if (len > 0xffff)
++		return -EINVAL;
++
++	/* patch up the config descriptor */
++	cp->bLength = USB_DT_CONFIG_SIZE;
++	cp->bDescriptorType = USB_DT_CONFIG;
++	cp->wTotalLength = cpu_to_le16(len);
++	cp->bmAttributes |= USB_CONFIG_ATT_ONE;
++	return len;
++}
++
++/*-------------------------------------------------------------------------*/
++/*-------------------------------------------------------------------------*/
++
++
++#define RBUF_LEN (1024*1024)
++static int rbuf_start;
++static int rbuf_len;
++static __u8 rbuf[RBUF_LEN];
++
++/*-------------------------------------------------------------------------*/
++
++#define DRIVER_VERSION		"St Patrick's Day 2004"
++
++static const char shortname [] = "zero";
++static const char longname [] = "YAMAHA YST-MS35D USB Speaker  ";
++
++static const char source_sink [] = "source and sink data";
++static const char loopback [] = "loop input to output";
++
++/*-------------------------------------------------------------------------*/
++
++/*
++ * driver assumes self-powered hardware, and
++ * has no way for users to trigger remote wakeup.
++ *
++ * this version autoconfigures as much as possible,
++ * which is reasonable for most "bulk-only" drivers.
++ */
++static const char *EP_IN_NAME;		/* source */
++static const char *EP_OUT_NAME;		/* sink */
++
++/*-------------------------------------------------------------------------*/
++
++/* big enough to hold our biggest descriptor */
++#define USB_BUFSIZ	512
++
++struct zero_dev {
++	spinlock_t		lock;
++	struct usb_gadget	*gadget;
++	struct usb_request	*req;		/* for control responses */
++
++	/* when configured, we have one of two configs:
++	 * - source data (in to host) and sink it (out from host)
++	 * - or loop it back (out from host back in to host)
++	 */
++	u8			config;
++	struct usb_ep		*in_ep, *out_ep;
++
++	/* autoresume timer */
++	struct timer_list	resume;
++};
++
++#define xprintk(d,level,fmt,args...) \
++	dev_printk(level , &(d)->gadget->dev , fmt , ## args)
++
++#ifdef DEBUG
++#define DBG(dev,fmt,args...) \
++	xprintk(dev , KERN_DEBUG , fmt , ## args)
++#else
++#define DBG(dev,fmt,args...) \
++	do { } while (0)
++#endif /* DEBUG */
++
++#ifdef VERBOSE
++#define VDBG	DBG
++#else
++#define VDBG(dev,fmt,args...) \
++	do { } while (0)
++#endif /* VERBOSE */
++
++#define ERROR(dev,fmt,args...) \
++	xprintk(dev , KERN_ERR , fmt , ## args)
++#define WARN(dev,fmt,args...) \
++	xprintk(dev , KERN_WARNING , fmt , ## args)
++#define INFO(dev,fmt,args...) \
++	xprintk(dev , KERN_INFO , fmt , ## args)
++
++/*-------------------------------------------------------------------------*/
++
++static unsigned buflen = 4096;
++static unsigned qlen = 32;
++static unsigned pattern = 0;
++
++module_param (buflen, uint, S_IRUGO|S_IWUSR);
++module_param (qlen, uint, S_IRUGO|S_IWUSR);
++module_param (pattern, uint, S_IRUGO|S_IWUSR);
++
++/*
++ * if it's nonzero, autoresume says how many seconds to wait
++ * before trying to wake up the host after suspend.
++ */
++static unsigned autoresume = 0;
++module_param (autoresume, uint, 0);
++
++/*
++ * Normally the "loopback" configuration is second (index 1) so
++ * it's not the default.  Here's where to change that order, to
++ * work better with hosts where config changes are problematic.
++ * Or controllers (like superh) that only support one config.
++ */
++static int loopdefault = 0;
++
++module_param (loopdefault, bool, S_IRUGO|S_IWUSR);
++
++/*-------------------------------------------------------------------------*/
++
++/* Thanks to NetChip Technologies for donating this product ID.
++ *
++ * DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
++ * Instead:  allocate your own, using normal USB-IF procedures.
++ */
++#ifndef	CONFIG_USB_ZERO_HNPTEST
++#define DRIVER_VENDOR_NUM	0x0525		/* NetChip */
++#define DRIVER_PRODUCT_NUM	0xa4a0		/* Linux-USB "Gadget Zero" */
++#else
++#define DRIVER_VENDOR_NUM	0x1a0a		/* OTG test device IDs */
++#define DRIVER_PRODUCT_NUM	0xbadd
++#endif
++
++/*-------------------------------------------------------------------------*/
++
++/*
++ * DESCRIPTORS ... most are static, but strings and (full)
++ * configuration descriptors are built on demand.
++ */
++
++/*
++#define STRING_MANUFACTURER		25
++#define STRING_PRODUCT			42
++#define STRING_SERIAL			101
++*/
++#define STRING_MANUFACTURER		1
++#define STRING_PRODUCT			2
++#define STRING_SERIAL			3
++
++#define STRING_SOURCE_SINK		250
++#define STRING_LOOPBACK			251
++
++/*
++ * This device advertises two configurations; these numbers work
++ * on a pxa250 as well as more flexible hardware.
++ */
++#define	CONFIG_SOURCE_SINK	3
++#define	CONFIG_LOOPBACK		2
++
++/*
++static struct usb_device_descriptor
++device_desc = {
++	.bLength =		sizeof device_desc,
++	.bDescriptorType =	USB_DT_DEVICE,
++
++	.bcdUSB =		__constant_cpu_to_le16 (0x0200),
++	.bDeviceClass =		USB_CLASS_VENDOR_SPEC,
++
++	.idVendor =		__constant_cpu_to_le16 (DRIVER_VENDOR_NUM),
++	.idProduct =		__constant_cpu_to_le16 (DRIVER_PRODUCT_NUM),
++	.iManufacturer =	STRING_MANUFACTURER,
++	.iProduct =		STRING_PRODUCT,
++	.iSerialNumber =	STRING_SERIAL,
++	.bNumConfigurations =	2,
++};
++*/
++static struct usb_device_descriptor
++device_desc = {
++	.bLength =		sizeof device_desc,
++	.bDescriptorType =	USB_DT_DEVICE,
++	.bcdUSB =		__constant_cpu_to_le16 (0x0100),
++	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
++	.bDeviceSubClass =      0,
++	.bDeviceProtocol =      0,
++	.bMaxPacketSize0 =      64,
++	.bcdDevice =            __constant_cpu_to_le16 (0x0100),
++	.idVendor =		__constant_cpu_to_le16 (0x0499),
++	.idProduct =		__constant_cpu_to_le16 (0x3002),
++	.iManufacturer =	STRING_MANUFACTURER,
++	.iProduct =		STRING_PRODUCT,
++	.iSerialNumber =	STRING_SERIAL,
++	.bNumConfigurations =	1,
++};
++
++static struct usb_config_descriptor
++z_config = {
++	.bLength =		sizeof z_config,
++	.bDescriptorType =	USB_DT_CONFIG,
++
++	/* compute wTotalLength on the fly */
++	.bNumInterfaces =	2,
++	.bConfigurationValue =	1,
++	.iConfiguration =	0,
++	.bmAttributes =		0x40,
++	.bMaxPower =		0,	/* self-powered */
++};
++
++
++static struct usb_otg_descriptor
++otg_descriptor = {
++	.bLength =		sizeof otg_descriptor,
++	.bDescriptorType =	USB_DT_OTG,
++
++	.bmAttributes =		USB_OTG_SRP,
++};
++
++/* one interface in each configuration */
++#ifdef	CONFIG_USB_GADGET_DUALSPEED
++
++/*
++ * usb 2.0 devices need to expose both high speed and full speed
++ * descriptors, unless they only run at full speed.
++ *
++ * that means alternate endpoint descriptors (bigger packets)
++ * and a "device qualifier" ... plus more construction options
++ * for the config descriptor.
++ */
++
++static struct usb_qualifier_descriptor
++dev_qualifier = {
++	.bLength =		sizeof dev_qualifier,
++	.bDescriptorType =	USB_DT_DEVICE_QUALIFIER,
++
++	.bcdUSB =		__constant_cpu_to_le16 (0x0200),
++	.bDeviceClass =		USB_CLASS_VENDOR_SPEC,
++
++	.bNumConfigurations =	2,
++};
++
++
++struct usb_cs_as_general_descriptor {
++	__u8  bLength;
++	__u8  bDescriptorType;
++
++	__u8  bDescriptorSubType;
++	__u8  bTerminalLink;
++	__u8  bDelay;
++	__u16  wFormatTag;
++} __attribute__ ((packed));
++
++struct usb_cs_as_format_descriptor {
++	__u8  bLength;
++	__u8  bDescriptorType;
++
++	__u8  bDescriptorSubType;
++	__u8  bFormatType;
++	__u8  bNrChannels;
++	__u8  bSubframeSize;
++	__u8  bBitResolution;
++	__u8  bSamfreqType;
++	__u8  tLowerSamFreq[3];
++	__u8  tUpperSamFreq[3];
++} __attribute__ ((packed));
++
++static const struct usb_interface_descriptor
++z_audio_control_if_desc = {
++	.bLength =		sizeof z_audio_control_if_desc,
++	.bDescriptorType =	USB_DT_INTERFACE,
++	.bInterfaceNumber = 0,
++	.bAlternateSetting = 0,
++	.bNumEndpoints = 0,
++	.bInterfaceClass = USB_CLASS_AUDIO,
++	.bInterfaceSubClass = 0x1,
++	.bInterfaceProtocol = 0,
++	.iInterface = 0,
++};
++
++static const struct usb_interface_descriptor
++z_audio_if_desc = {
++	.bLength =		sizeof z_audio_if_desc,
++	.bDescriptorType =	USB_DT_INTERFACE,
++	.bInterfaceNumber = 1,
++	.bAlternateSetting = 0,
++	.bNumEndpoints = 0,
++	.bInterfaceClass = USB_CLASS_AUDIO,
++	.bInterfaceSubClass = 0x2,
++	.bInterfaceProtocol = 0,
++	.iInterface = 0,
++};
++
++static const struct usb_interface_descriptor
++z_audio_if_desc2 = {
++	.bLength =		sizeof z_audio_if_desc,
++	.bDescriptorType =	USB_DT_INTERFACE,
++	.bInterfaceNumber = 1,
++	.bAlternateSetting = 1,
++	.bNumEndpoints = 1,
++	.bInterfaceClass = USB_CLASS_AUDIO,
++	.bInterfaceSubClass = 0x2,
++	.bInterfaceProtocol = 0,
++	.iInterface = 0,
++};
++
++static const struct usb_cs_as_general_descriptor
++z_audio_cs_as_if_desc = {
++	.bLength = 7,
++	.bDescriptorType = 0x24,
++
++	.bDescriptorSubType = 0x01,
++	.bTerminalLink = 0x01,
++	.bDelay = 0x0,
++	.wFormatTag = __constant_cpu_to_le16 (0x0001)
++};
++
++
++static const struct usb_cs_as_format_descriptor
++z_audio_cs_as_format_desc = {
++	.bLength = 0xe,
++	.bDescriptorType = 0x24,
++
++	.bDescriptorSubType = 2,
++	.bFormatType = 1,
++	.bNrChannels = 1,
++	.bSubframeSize = 1,
++	.bBitResolution = 8,
++	.bSamfreqType = 0,
++	.tLowerSamFreq = {0x7e, 0x13, 0x00},
++	.tUpperSamFreq = {0xe2, 0xd6, 0x00},
++};
++
++static const struct usb_endpoint_descriptor
++z_iso_ep = {
++	.bLength = 0x09,
++	.bDescriptorType = 0x05,
++	.bEndpointAddress = 0x04,
++	.bmAttributes = 0x09,
++	.wMaxPacketSize = 0x0038,
++	.bInterval = 0x01,
++	.bRefresh = 0x00,
++	.bSynchAddress = 0x00,
++};
++
++static char z_iso_ep2[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
++
++// 9 bytes
++static char z_ac_interface_header_desc[] =
++{ 0x09, 0x24, 0x01, 0x00, 0x01, 0x2b, 0x00, 0x01, 0x01 };
++
++// 12 bytes
++static char z_0[] = {0x0c, 0x24, 0x02, 0x01, 0x01, 0x01, 0x00, 0x02,
++		     0x03, 0x00, 0x00, 0x00};
++// 13 bytes
++static char z_1[] = {0x0d, 0x24, 0x06, 0x02, 0x01, 0x02, 0x15, 0x00,
++		     0x02, 0x00, 0x02, 0x00, 0x00};
++// 9 bytes
++static char z_2[] = {0x09, 0x24, 0x03, 0x03, 0x01, 0x03, 0x00, 0x02,
++		     0x00};
++
++static char za_0[] = {0x09, 0x04, 0x01, 0x02, 0x01, 0x01, 0x02, 0x00,
++		      0x00};
++
++static char za_1[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
++
++static char za_2[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x01, 0x08, 0x00,
++		      0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
++
++static char za_3[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
++		      0x00};
++
++static char za_4[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
++
++static char za_5[] = {0x09, 0x04, 0x01, 0x03, 0x01, 0x01, 0x02, 0x00,
++		      0x00};
++
++static char za_6[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
++
++static char za_7[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x02, 0x10, 0x00,
++		      0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
++
++static char za_8[] = {0x09, 0x05, 0x04, 0x09, 0x70, 0x00, 0x01, 0x00,
++		      0x00};
++
++static char za_9[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
++
++static char za_10[] = {0x09, 0x04, 0x01, 0x04, 0x01, 0x01, 0x02, 0x00,
++		       0x00};
++
++static char za_11[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
++
++static char za_12[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x02, 0x10, 0x00,
++		       0x73, 0x13, 0x00, 0xe2, 0xd6, 0x00};
++
++static char za_13[] = {0x09, 0x05, 0x04, 0x09, 0xe0, 0x00, 0x01, 0x00,
++		       0x00};
++
++static char za_14[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
++
++static char za_15[] = {0x09, 0x04, 0x01, 0x05, 0x01, 0x01, 0x02, 0x00,
++		       0x00};
++
++static char za_16[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
++
++static char za_17[] = {0x0e, 0x24, 0x02, 0x01, 0x01, 0x03, 0x14, 0x00,
++		       0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
++
++static char za_18[] = {0x09, 0x05, 0x04, 0x09, 0xa8, 0x00, 0x01, 0x00,
++		       0x00};
++
++static char za_19[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
++
++static char za_20[] = {0x09, 0x04, 0x01, 0x06, 0x01, 0x01, 0x02, 0x00,
++		       0x00};
++
++static char za_21[] = {0x07, 0x24, 0x01, 0x01, 0x00, 0x01, 0x00};
++
++static char za_22[] = {0x0e, 0x24, 0x02, 0x01, 0x02, 0x03, 0x14, 0x00,
++		       0x7e, 0x13, 0x00, 0xe2, 0xd6, 0x00};
++
++static char za_23[] = {0x09, 0x05, 0x04, 0x09, 0x50, 0x01, 0x01, 0x00,
++		       0x00};
++
++static char za_24[] = {0x07, 0x25, 0x01, 0x00, 0x02, 0x00, 0x02};
++
++
++
++static const struct usb_descriptor_header *z_function [] = {
++	(struct usb_descriptor_header *) &z_audio_control_if_desc,
++	(struct usb_descriptor_header *) &z_ac_interface_header_desc,
++	(struct usb_descriptor_header *) &z_0,
++	(struct usb_descriptor_header *) &z_1,
++	(struct usb_descriptor_header *) &z_2,
++	(struct usb_descriptor_header *) &z_audio_if_desc,
++	(struct usb_descriptor_header *) &z_audio_if_desc2,
++	(struct usb_descriptor_header *) &z_audio_cs_as_if_desc,
++	(struct usb_descriptor_header *) &z_audio_cs_as_format_desc,
++	(struct usb_descriptor_header *) &z_iso_ep,
++	(struct usb_descriptor_header *) &z_iso_ep2,
++	(struct usb_descriptor_header *) &za_0,
++	(struct usb_descriptor_header *) &za_1,
++	(struct usb_descriptor_header *) &za_2,
++	(struct usb_descriptor_header *) &za_3,
++	(struct usb_descriptor_header *) &za_4,
++	(struct usb_descriptor_header *) &za_5,
++	(struct usb_descriptor_header *) &za_6,
++	(struct usb_descriptor_header *) &za_7,
++	(struct usb_descriptor_header *) &za_8,
++	(struct usb_descriptor_header *) &za_9,
++	(struct usb_descriptor_header *) &za_10,
++	(struct usb_descriptor_header *) &za_11,
++	(struct usb_descriptor_header *) &za_12,
++	(struct usb_descriptor_header *) &za_13,
++	(struct usb_descriptor_header *) &za_14,
++	(struct usb_descriptor_header *) &za_15,
++	(struct usb_descriptor_header *) &za_16,
++	(struct usb_descriptor_header *) &za_17,
++	(struct usb_descriptor_header *) &za_18,
++	(struct usb_descriptor_header *) &za_19,
++	(struct usb_descriptor_header *) &za_20,
++	(struct usb_descriptor_header *) &za_21,
++	(struct usb_descriptor_header *) &za_22,
++	(struct usb_descriptor_header *) &za_23,
++	(struct usb_descriptor_header *) &za_24,
++	NULL,
++};
++
++/* maxpacket and other transfer characteristics vary by speed. */
++#define ep_desc(g,hs,fs) (((g)->speed==USB_SPEED_HIGH)?(hs):(fs))
++
++#else
++
++/* if there's no high speed support, maxpacket doesn't change. */
++#define ep_desc(g,hs,fs) fs
++
++#endif	/* !CONFIG_USB_GADGET_DUALSPEED */
++
++static char				manufacturer [40];
++//static char				serial [40];
++static char				serial [] = "Ser 00 em";
++
++/* static strings, in UTF-8 */
++static struct usb_string		strings [] = {
++	{ STRING_MANUFACTURER, manufacturer, },
++	{ STRING_PRODUCT, longname, },
++	{ STRING_SERIAL, serial, },
++	{ STRING_LOOPBACK, loopback, },
++	{ STRING_SOURCE_SINK, source_sink, },
++	{  }			/* end of list */
++};
++
++static struct usb_gadget_strings	stringtab = {
++	.language	= 0x0409,	/* en-us */
++	.strings	= strings,
++};
++
++/*
++ * config descriptors are also handcrafted.  these must agree with code
++ * that sets configurations, and with code managing interfaces and their
++ * altsettings.  other complexity may come from:
++ *
++ *  - high speed support, including "other speed config" rules
++ *  - multiple configurations
++ *  - interfaces with alternate settings
++ *  - embedded class or vendor-specific descriptors
++ *
++ * this handles high speed, and has a second config that could as easily
++ * have been an alternate interface setting (on most hardware).
++ *
++ * NOTE:  to demonstrate (and test) more USB capabilities, this driver
++ * should include an altsetting to test interrupt transfers, including
++ * high bandwidth modes at high speed.  (Maybe work like Intel's test
++ * device?)
++ */
++static int
++config_buf (struct usb_gadget *gadget, u8 *buf, u8 type, unsigned index)
++{
++	int len;
++	const struct usb_descriptor_header **function;
++
++	function = z_function;
++	len = usb_gadget_config_buf (&z_config, buf, USB_BUFSIZ, function);
++	if (len < 0)
++		return len;
++	((struct usb_config_descriptor *) buf)->bDescriptorType = type;
++	return len;
++}
++
++/*-------------------------------------------------------------------------*/
++
++static struct usb_request *
++alloc_ep_req (struct usb_ep *ep, unsigned length)
++{
++	struct usb_request	*req;
++
++	req = usb_ep_alloc_request (ep, GFP_ATOMIC);
++	if (req) {
++		req->length = length;
++		req->buf = usb_ep_alloc_buffer (ep, length,
++				&req->dma, GFP_ATOMIC);
++		if (!req->buf) {
++			usb_ep_free_request (ep, req);
++			req = NULL;
++		}
++	}
++	return req;
++}
++
++static void free_ep_req (struct usb_ep *ep, struct usb_request *req)
++{
++	if (req->buf)
++		usb_ep_free_buffer (ep, req->buf, req->dma, req->length);
++	usb_ep_free_request (ep, req);
++}
++
++/*-------------------------------------------------------------------------*/
++
++/* optionally require specific source/sink data patterns  */
++
++static int
++check_read_data (
++	struct zero_dev		*dev,
++	struct usb_ep		*ep,
++	struct usb_request	*req
++)
++{
++	unsigned	i;
++	u8		*buf = req->buf;
++
++	for (i = 0; i < req->actual; i++, buf++) {
++		switch (pattern) {
++		/* all-zeroes has no synchronization issues */
++		case 0:
++			if (*buf == 0)
++				continue;
++			break;
++		/* mod63 stays in sync with short-terminated transfers,
++		 * or otherwise when host and gadget agree on how large
++		 * each usb transfer request should be.  resync is done
++		 * with set_interface or set_config.
++		 */
++		case 1:
++			if (*buf == (u8)(i % 63))
++				continue;
++			break;
++		}
++		ERROR (dev, "bad OUT byte, buf [%d] = %d\n", i, *buf);
++		usb_ep_set_halt (ep);
++		return -EINVAL;
++	}
++	return 0;
++}
++
++/*-------------------------------------------------------------------------*/
++
++static void zero_reset_config (struct zero_dev *dev)
++{
++	if (dev->config == 0)
++		return;
++
++	DBG (dev, "reset config\n");
++
++	/* just disable endpoints, forcing completion of pending i/o.
++	 * all our completion handlers free their requests in this case.
++	 */
++	if (dev->in_ep) {
++		usb_ep_disable (dev->in_ep);
++		dev->in_ep = NULL;
++	}
++	if (dev->out_ep) {
++		usb_ep_disable (dev->out_ep);
++		dev->out_ep = NULL;
++	}
++	dev->config = 0;
++	del_timer (&dev->resume);
++}
++
++#define _write(f, buf, sz) (f->f_op->write(f, buf, sz, &f->f_pos))
++
++static void
++zero_isoc_complete (struct usb_ep *ep, struct usb_request *req)
++{
++	struct zero_dev	*dev = ep->driver_data;
++	int		status = req->status;
++	int i, j;
++
++	switch (status) {
++
++	case 0: 			/* normal completion? */
++		//printk ("\nzero ---------------> isoc normal completion %d bytes\n", req->actual);
++		for (i=0, j=rbuf_start; i<req->actual; i++) {
++			//printk ("%02x ", ((__u8*)req->buf)[i]);
++			rbuf[j] = ((__u8*)req->buf)[i];
++			j++;
++			if (j >= RBUF_LEN) j=0;
++		}
++		rbuf_start = j;
++		//printk ("\n\n");
++
++		if (rbuf_len < RBUF_LEN) {
++			rbuf_len += req->actual;
++			if (rbuf_len > RBUF_LEN) {
++				rbuf_len = RBUF_LEN;
++			}
++		}
++
++		break;
++
++	/* this endpoint is normally active while we're configured */
++	case -ECONNABORTED: 		/* hardware forced ep reset */
++	case -ECONNRESET:		/* request dequeued */
++	case -ESHUTDOWN:		/* disconnect from host */
++		VDBG (dev, "%s gone (%d), %d/%d\n", ep->name, status,
++				req->actual, req->length);
++		if (ep == dev->out_ep)
++			check_read_data (dev, ep, req);
++		free_ep_req (ep, req);
++		return;
++
++	case -EOVERFLOW:		/* buffer overrun on read means that
++					 * we didn't provide a big enough
++					 * buffer.
++					 */
++	default:
++#if 1
++		DBG (dev, "%s complete --> %d, %d/%d\n", ep->name,
++				status, req->actual, req->length);
++#endif
++	case -EREMOTEIO:		/* short read */
++		break;
++	}
++
++	status = usb_ep_queue (ep, req, GFP_ATOMIC);
++	if (status) {
++		ERROR (dev, "kill %s:  resubmit %d bytes --> %d\n",
++				ep->name, req->length, status);
++		usb_ep_set_halt (ep);
++		/* FIXME recover later ... somehow */
++	}
++}
++
++static struct usb_request *
++zero_start_isoc_ep (struct usb_ep *ep, int gfp_flags)
++{
++	struct usb_request	*req;
++	int			status;
++
++	req = alloc_ep_req (ep, 512);
++	if (!req)
++		return NULL;
++
++	req->complete = zero_isoc_complete;
++
++	status = usb_ep_queue (ep, req, gfp_flags);
++	if (status) {
++		struct zero_dev	*dev = ep->driver_data;
++
++		ERROR (dev, "start %s --> %d\n", ep->name, status);
++		free_ep_req (ep, req);
++		req = NULL;
++	}
++
++	return req;
++}
++
++/* change our operational config.  this code must agree with the code
++ * that returns config descriptors, and altsetting code.
++ *
++ * it's also responsible for power management interactions. some
++ * configurations might not work with our current power sources.
++ *
++ * note that some device controller hardware will constrain what this
++ * code can do, perhaps by disallowing more than one configuration or
++ * by limiting configuration choices (like the pxa2xx).
++ */
++static int
++zero_set_config (struct zero_dev *dev, unsigned number, int gfp_flags)
++{
++	int			result = 0;
++	struct usb_gadget	*gadget = dev->gadget;
++	const struct usb_endpoint_descriptor	*d;
++	struct usb_ep		*ep;
++
++	if (number == dev->config)
++		return 0;
++
++	zero_reset_config (dev);
++
++	gadget_for_each_ep (ep, gadget) {
++
++		if (strcmp (ep->name, "ep4") == 0) {
++
++			d = (struct usb_endpoint_descripter *)&za_23; // isoc ep desc for audio i/f alt setting 6
++			result = usb_ep_enable (ep, d);
++
++			if (result == 0) {
++				ep->driver_data = dev;
++				dev->in_ep = ep;
++
++				if (zero_start_isoc_ep (ep, gfp_flags) != 0) {
++
++					dev->in_ep = ep;
++					continue;
++				}
++
++				usb_ep_disable (ep);
++				result = -EIO;
++			}
++		}
++
++	}
++
++	dev->config = number;
++	return result;
++}
++
++/*-------------------------------------------------------------------------*/
++
++static void zero_setup_complete (struct usb_ep *ep, struct usb_request *req)
++{
++	if (req->status || req->actual != req->length)
++		DBG ((struct zero_dev *) ep->driver_data,
++				"setup complete --> %d, %d/%d\n",
++				req->status, req->actual, req->length);
++}
++
++/*
++ * The setup() callback implements all the ep0 functionality that's
++ * not handled lower down, in hardware or the hardware driver (like
++ * device and endpoint feature flags, and their status).  It's all
++ * housekeeping for the gadget function we're implementing.  Most of
++ * the work is in config-specific setup.
++ */
++static int
++zero_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
++{
++	struct zero_dev		*dev = get_gadget_data (gadget);
++	struct usb_request	*req = dev->req;
++	int			value = -EOPNOTSUPP;
++
++	/* usually this stores reply data in the pre-allocated ep0 buffer,
++	 * but config change events will reconfigure hardware.
++	 */
++	req->zero = 0;
++	switch (ctrl->bRequest) {
++
++	case USB_REQ_GET_DESCRIPTOR:
++
++		switch (ctrl->wValue >> 8) {
++
++		case USB_DT_DEVICE:
++			value = min (ctrl->wLength, (u16) sizeof device_desc);
++			memcpy (req->buf, &device_desc, value);
++			break;
++#ifdef CONFIG_USB_GADGET_DUALSPEED
++		case USB_DT_DEVICE_QUALIFIER:
++			if (!gadget->is_dualspeed)
++				break;
++			value = min (ctrl->wLength, (u16) sizeof dev_qualifier);
++			memcpy (req->buf, &dev_qualifier, value);
++			break;
++
++		case USB_DT_OTHER_SPEED_CONFIG:
++			if (!gadget->is_dualspeed)
++				break;
++			// FALLTHROUGH
++#endif /* CONFIG_USB_GADGET_DUALSPEED */
++		case USB_DT_CONFIG:
++			value = config_buf (gadget, req->buf,
++					ctrl->wValue >> 8,
++					ctrl->wValue & 0xff);
++			if (value >= 0)
++				value = min (ctrl->wLength, (u16) value);
++			break;
++
++		case USB_DT_STRING:
++			/* wIndex == language code.
++			 * this driver only handles one language, you can
++			 * add string tables for other languages, using
++			 * any UTF-8 characters
++			 */
++			value = usb_gadget_get_string (&stringtab,
++					ctrl->wValue & 0xff, req->buf);
++			if (value >= 0) {
++				value = min (ctrl->wLength, (u16) value);
++			}
++			break;
++		}
++		break;
++
++	/* currently two configs, two speeds */
++	case USB_REQ_SET_CONFIGURATION:
++		if (ctrl->bRequestType != 0)
++			goto unknown;
++
++		spin_lock (&dev->lock);
++		value = zero_set_config (dev, ctrl->wValue, GFP_ATOMIC);
++		spin_unlock (&dev->lock);
++		break;
++	case USB_REQ_GET_CONFIGURATION:
++		if (ctrl->bRequestType != USB_DIR_IN)
++			goto unknown;
++		*(u8 *)req->buf = dev->config;
++		value = min (ctrl->wLength, (u16) 1);
++		break;
++
++	/* until we add altsetting support, or other interfaces,
++	 * only 0/0 are possible.  pxa2xx only supports 0/0 (poorly)
++	 * and already killed pending endpoint I/O.
++	 */
++	case USB_REQ_SET_INTERFACE:
++
++		if (ctrl->bRequestType != USB_RECIP_INTERFACE)
++			goto unknown;
++		spin_lock (&dev->lock);
++		if (dev->config) {
++			u8		config = dev->config;
++
++			/* resets interface configuration, forgets about
++			 * previous transaction state (queued bufs, etc)
++			 * and re-inits endpoint state (toggle etc)
++			 * no response queued, just zero status == success.
++			 * if we had more than one interface we couldn't
++			 * use this "reset the config" shortcut.
++			 */
++			zero_reset_config (dev);
++			zero_set_config (dev, config, GFP_ATOMIC);
++			value = 0;
++		}
++		spin_unlock (&dev->lock);
++		break;
++	case USB_REQ_GET_INTERFACE:
++		if ((ctrl->bRequestType == 0x21) && (ctrl->wIndex == 0x02)) {
++			value = ctrl->wLength;
++			break;
++		}
++		else {
++			if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE))
++				goto unknown;
++			if (!dev->config)
++				break;
++			if (ctrl->wIndex != 0) {
++				value = -EDOM;
++				break;
++			}
++			*(u8 *)req->buf = 0;
++			value = min (ctrl->wLength, (u16) 1);
++		}
++		break;
++
++	/*
++	 * These are the same vendor-specific requests supported by
++	 * Intel's USB 2.0 compliance test devices.  We exceed that
++	 * device spec by allowing multiple-packet requests.
++	 */
++	case 0x5b:	/* control WRITE test -- fill the buffer */
++		if (ctrl->bRequestType != (USB_DIR_OUT|USB_TYPE_VENDOR))
++			goto unknown;
++		if (ctrl->wValue || ctrl->wIndex)
++			break;
++		/* just read that many bytes into the buffer */
++		if (ctrl->wLength > USB_BUFSIZ)
++			break;
++		value = ctrl->wLength;
++		break;
++	case 0x5c:	/* control READ test -- return the buffer */
++		if (ctrl->bRequestType != (USB_DIR_IN|USB_TYPE_VENDOR))
++			goto unknown;
++		if (ctrl->wValue || ctrl->wIndex)
++			break;
++		/* expect those bytes are still in the buffer; send back */
++		if (ctrl->wLength > USB_BUFSIZ
++				|| ctrl->wLength != req->length)
++			break;
++		value = ctrl->wLength;
++		break;
++
++	case 0x01: // SET_CUR
++	case 0x02:
++	case 0x03:
++	case 0x04:
++	case 0x05:
++		value = ctrl->wLength;
++		break;
++	case 0x81:
++		switch (ctrl->wValue) {
++		case 0x0201:
++		case 0x0202:
++			((u8*)req->buf)[0] = 0x00;
++			((u8*)req->buf)[1] = 0xe3;
++			break;
++		case 0x0300:
++		case 0x0500:
++			((u8*)req->buf)[0] = 0x00;
++			break;
++		}
++		//((u8*)req->buf)[0] = 0x81;
++		//((u8*)req->buf)[1] = 0x81;
++		value = ctrl->wLength;
++		break;
++	case 0x82:
++		switch (ctrl->wValue) {
++		case 0x0201:
++		case 0x0202:
++			((u8*)req->buf)[0] = 0x00;
++			((u8*)req->buf)[1] = 0xc3;
++			break;
++		case 0x0300:
++		case 0x0500:
++			((u8*)req->buf)[0] = 0x00;
++			break;
++		}
++		//((u8*)req->buf)[0] = 0x82;
++		//((u8*)req->buf)[1] = 0x82;
++		value = ctrl->wLength;
++		break;
++	case 0x83:
++		switch (ctrl->wValue) {
++		case 0x0201:
++		case 0x0202:
++			((u8*)req->buf)[0] = 0x00;
++			((u8*)req->buf)[1] = 0x00;
++			break;
++		case 0x0300:
++			((u8*)req->buf)[0] = 0x60;
++			break;
++		case 0x0500:
++			((u8*)req->buf)[0] = 0x18;
++			break;
++		}
++		//((u8*)req->buf)[0] = 0x83;
++		//((u8*)req->buf)[1] = 0x83;
++		value = ctrl->wLength;
++		break;
++	case 0x84:
++		switch (ctrl->wValue) {
++		case 0x0201:
++		case 0x0202:
++			((u8*)req->buf)[0] = 0x00;
++			((u8*)req->buf)[1] = 0x01;
++			break;
++		case 0x0300:
++		case 0x0500:
++			((u8*)req->buf)[0] = 0x08;
++			break;
++		}
++		//((u8*)req->buf)[0] = 0x84;
++		//((u8*)req->buf)[1] = 0x84;
++		value = ctrl->wLength;
++		break;
++	case 0x85:
++		((u8*)req->buf)[0] = 0x85;
++		((u8*)req->buf)[1] = 0x85;
++		value = ctrl->wLength;
++		break;
++
++
++	default:
++unknown:
++		printk("unknown control req%02x.%02x v%04x i%04x l%d\n",
++			ctrl->bRequestType, ctrl->bRequest,
++			ctrl->wValue, ctrl->wIndex, ctrl->wLength);
++	}
++
++	/* respond with data transfer before status phase? */
++	if (value >= 0) {
++		req->length = value;
++		req->zero = value < ctrl->wLength
++				&& (value % gadget->ep0->maxpacket) == 0;
++		value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
++		if (value < 0) {
++			DBG (dev, "ep_queue < 0 --> %d\n", value);
++			req->status = 0;
++			zero_setup_complete (gadget->ep0, req);
++		}
++	}
++
++	/* device either stalls (value < 0) or reports success */
++	return value;
++}
++
++static void
++zero_disconnect (struct usb_gadget *gadget)
++{
++	struct zero_dev		*dev = get_gadget_data (gadget);
++	unsigned long		flags;
++
++	spin_lock_irqsave (&dev->lock, flags);
++	zero_reset_config (dev);
++
++	/* a more significant application might have some non-usb
++	 * activities to quiesce here, saving resources like power
++	 * or pushing the notification up a network stack.
++	 */
++	spin_unlock_irqrestore (&dev->lock, flags);
++
++	/* next we may get setup() calls to enumerate new connections;
++	 * or an unbind() during shutdown (including removing module).
++	 */
++}
++
++static void
++zero_autoresume (unsigned long _dev)
++{
++	struct zero_dev	*dev = (struct zero_dev *) _dev;
++	int		status;
++
++	/* normally the host would be woken up for something
++	 * more significant than just a timer firing...
++	 */
++	if (dev->gadget->speed != USB_SPEED_UNKNOWN) {
++		status = usb_gadget_wakeup (dev->gadget);
++		DBG (dev, "wakeup --> %d\n", status);
++	}
++}
++
++/*-------------------------------------------------------------------------*/
++
++static void
++zero_unbind (struct usb_gadget *gadget)
++{
++	struct zero_dev		*dev = get_gadget_data (gadget);
++
++	DBG (dev, "unbind\n");
++
++	/* we've already been disconnected ... no i/o is active */
++	if (dev->req)
++		free_ep_req (gadget->ep0, dev->req);
++	del_timer_sync (&dev->resume);
++	kfree (dev);
++	set_gadget_data (gadget, NULL);
++}
++
++static int
++zero_bind (struct usb_gadget *gadget)
++{
++	struct zero_dev		*dev;
++	//struct usb_ep		*ep;
++
++	printk("binding\n");
++	/*
++	 * DRIVER POLICY CHOICE:  you may want to do this differently.
++	 * One thing to avoid is reusing a bcdDevice revision code
++	 * with different host-visible configurations or behavior
++	 * restrictions -- using ep1in/ep2out vs ep1out/ep3in, etc
++	 */
++	//device_desc.bcdDevice = __constant_cpu_to_le16 (0x0201);
++
++
++	/* ok, we made sense of the hardware ... */
++	dev = kzalloc (sizeof *dev, SLAB_KERNEL);
++	if (!dev)
++		return -ENOMEM;
++	spin_lock_init (&dev->lock);
++	dev->gadget = gadget;
++	set_gadget_data (gadget, dev);
++
++	/* preallocate control response and buffer */
++	dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
++	if (!dev->req)
++		goto enomem;
++	dev->req->buf = usb_ep_alloc_buffer (gadget->ep0, USB_BUFSIZ,
++				&dev->req->dma, GFP_KERNEL);
++	if (!dev->req->buf)
++		goto enomem;
++
++	dev->req->complete = zero_setup_complete;
++
++	device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
++
++#ifdef CONFIG_USB_GADGET_DUALSPEED
++	/* assume ep0 uses the same value for both speeds ... */
++	dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0;
++
++	/* and that all endpoints are dual-speed */
++	//hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress;
++	//hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress;
++#endif
++
++	usb_gadget_set_selfpowered (gadget);
++
++	init_timer (&dev->resume);
++	dev->resume.function = zero_autoresume;
++	dev->resume.data = (unsigned long) dev;
++
++	gadget->ep0->driver_data = dev;
++
++	INFO (dev, "%s, version: " DRIVER_VERSION "\n", longname);
++	INFO (dev, "using %s, OUT %s IN %s\n", gadget->name,
++		EP_OUT_NAME, EP_IN_NAME);
++
++	snprintf (manufacturer, sizeof manufacturer,
++		UTS_SYSNAME " " UTS_RELEASE " with %s",
++		gadget->name);
++
++	return 0;
++
++enomem:
++	zero_unbind (gadget);
++	return -ENOMEM;
++}
++
++/*-------------------------------------------------------------------------*/
++
++static void
++zero_suspend (struct usb_gadget *gadget)
++{
++	struct zero_dev		*dev = get_gadget_data (gadget);
++
++	if (gadget->speed == USB_SPEED_UNKNOWN)
++		return;
++
++	if (autoresume) {
++		mod_timer (&dev->resume, jiffies + (HZ * autoresume));
++		DBG (dev, "suspend, wakeup in %d seconds\n", autoresume);
++	} else
++		DBG (dev, "suspend\n");
++}
++
++static void
++zero_resume (struct usb_gadget *gadget)
++{
++	struct zero_dev		*dev = get_gadget_data (gadget);
++
++	DBG (dev, "resume\n");
++	del_timer (&dev->resume);
++}
++
++
++/*-------------------------------------------------------------------------*/
++
++static struct usb_gadget_driver zero_driver = {
++#ifdef CONFIG_USB_GADGET_DUALSPEED
++	.speed		= USB_SPEED_HIGH,
++#else
++	.speed		= USB_SPEED_FULL,
++#endif
++	.function	= (char *) longname,
++	.bind		= zero_bind,
++	.unbind		= zero_unbind,
++
++	.setup		= zero_setup,
++	.disconnect	= zero_disconnect,
++
++	.suspend	= zero_suspend,
++	.resume		= zero_resume,
++
++	.driver 	= {
++		.name		= (char *) shortname,
++		// .shutdown = ...
++		// .suspend = ...
++		// .resume = ...
++	},
++};
++
++MODULE_AUTHOR ("David Brownell");
++MODULE_LICENSE ("Dual BSD/GPL");
++
++static struct proc_dir_entry *pdir, *pfile;
++
++static int isoc_read_data (char *page, char **start,
++			   off_t off, int count,
++			   int *eof, void *data)
++{
++	int i;
++	static int c = 0;
++	static int done = 0;
++	static int s = 0;
++
++/*
++	printk ("\ncount: %d\n", count);
++	printk ("rbuf_start: %d\n", rbuf_start);
++	printk ("rbuf_len: %d\n", rbuf_len);
++	printk ("off: %d\n", off);
++	printk ("start: %p\n\n", *start);
++*/
++	if (done) {
++		c = 0;
++		done = 0;
++		*eof = 1;
++		return 0;
++	}
++
++	if (c == 0) {
++		if (rbuf_len == RBUF_LEN)
++			s = rbuf_start;
++		else s = 0;
++	}
++
++	for (i=0; i<count && c<rbuf_len; i++, c++) {
++		page[i] = rbuf[(c+s) % RBUF_LEN];
++	}
++	*start = page;
++
++	if (c >= rbuf_len) {
++		*eof = 1;
++		done = 1;
++	}
++
++
++	return i;
++}
++
++static int __init init (void)
++{
++
++	int retval = 0;
++
++	pdir = proc_mkdir("isoc_test", NULL);
++	if(pdir == NULL) {
++		retval = -ENOMEM;
++		printk("Error creating dir\n");
++		goto done;
++	}
++	pdir->owner = THIS_MODULE;
++
++	pfile = create_proc_read_entry("isoc_data",
++				       0444, pdir,
++				       isoc_read_data,
++				       NULL);
++	if (pfile == NULL) {
++		retval = -ENOMEM;
++		printk("Error creating file\n");
++		goto no_file;
++	}
++	pfile->owner = THIS_MODULE;
++
++	return usb_gadget_register_driver (&zero_driver);
++
++ no_file:
++	remove_proc_entry("isoc_data", NULL);
++ done:
++	return retval;
++}
++module_init (init);
++
++static void __exit cleanup (void)
++{
++
++	usb_gadget_unregister_driver (&zero_driver);
++
++	remove_proc_entry("isoc_data", pdir);
++	remove_proc_entry("isoc_test", NULL);
++}
++module_exit (cleanup);
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_cfi_common.h
+@@ -0,0 +1,142 @@
++/* ==========================================================================
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#if !defined(__DWC_CFI_COMMON_H__)
++#define __DWC_CFI_COMMON_H__
++
++//#include <linux/types.h>
++
++/**
++ * @file
++ *
++ * This file contains the CFI specific common constants, interfaces
++ * (functions and macros) and structures for Linux. No PCD specific
++ * data structure or definition is to be included in this file.
++ *
++ */
++
++/** This is a request for all Core Features */
++#define VEN_CORE_GET_FEATURES		0xB1
++
++/** This is a request to get the value of a specific Core Feature */
++#define VEN_CORE_GET_FEATURE		0xB2
++
++/** This command allows the host to set the value of a specific Core Feature */
++#define VEN_CORE_SET_FEATURE		0xB3
++
++/** This command allows the host to set the default values of
++ * either all or any specific Core Feature
++ */
++#define VEN_CORE_RESET_FEATURES		0xB4
++
++/** This command forces the PCD to write the deferred values of a Core Features */
++#define VEN_CORE_ACTIVATE_FEATURES	0xB5
++
++/** This request reads a DWORD value from a register at the specified offset */
++#define VEN_CORE_READ_REGISTER		0xB6
++
++/** This request writes a DWORD value into a register at the specified offset */
++#define VEN_CORE_WRITE_REGISTER		0xB7
++
++/** This structure is the header of the Core Features dataset returned to
++ *  the Host
++ */
++struct cfi_all_features_header {
++/** The features header structure length is */
++#define CFI_ALL_FEATURES_HDR_LEN		8
++	/**
++	 * The total length of the features dataset returned to the Host
++	 */
++	uint16_t wTotalLen;
++
++	/**
++	 * CFI version number inBinary-Coded Decimal (i.e., 1.00 is 100H).
++	 * This field identifies the version of the CFI Specification with which
++	 * the device is compliant.
++	 */
++	uint16_t wVersion;
++
++	/** The ID of the Core */
++	uint16_t wCoreID;
++#define CFI_CORE_ID_UDC		1
++#define CFI_CORE_ID_OTG		2
++#define CFI_CORE_ID_WUDEV	3
++
++	/** Number of features returned by VEN_CORE_GET_FEATURES request */
++	uint16_t wNumFeatures;
++} UPACKED;
++
++typedef struct cfi_all_features_header cfi_all_features_header_t;
++
++/** This structure is a header of the Core Feature descriptor dataset returned to
++ *  the Host after the VEN_CORE_GET_FEATURES request
++ */
++struct cfi_feature_desc_header {
++#define CFI_FEATURE_DESC_HDR_LEN	8
++
++	/** The feature ID */
++	uint16_t wFeatureID;
++
++	/** Length of this feature descriptor in bytes - including the
++	 * length of the feature name string
++	 */
++	uint16_t wLength;
++
++	/** The data length of this feature in bytes */
++	uint16_t wDataLength;
++
++	/**
++	 * Attributes of this features
++	 * D0: Access rights
++	 * 0 - Read/Write
++	 * 1 - Read only
++	 */
++	uint8_t bmAttributes;
++#define CFI_FEATURE_ATTR_RO		1
++#define CFI_FEATURE_ATTR_RW		0
++
++	/** Length of the feature name in bytes */
++	uint8_t bNameLen;
++
++	/** The feature name buffer */
++	//uint8_t *name;
++} UPACKED;
++
++typedef struct cfi_feature_desc_header cfi_feature_desc_header_t;
++
++/**
++ * This structure describes a NULL terminated string referenced by its id field.
++ * It is very similar to usb_string structure but has the id field type set to 16-bit.
++ */
++struct cfi_string {
++	uint16_t id;
++	const uint8_t *s;
++};
++typedef struct cfi_string cfi_string_t;
++
++#endif
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_adp.c
+@@ -0,0 +1,854 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_adp.c $
++ * $Revision: #12 $
++ * $Date: 2011/10/26 $
++ * $Change: 1873028 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#include "dwc_os.h"
++#include "dwc_otg_regs.h"
++#include "dwc_otg_cil.h"
++#include "dwc_otg_adp.h"
++
++/** @file
++ *
++ * This file contains the most of the Attach Detect Protocol implementation for
++ * the driver to support OTG Rev2.0.
++ *
++ */
++
++void dwc_otg_adp_write_reg(dwc_otg_core_if_t * core_if, uint32_t value)
++{
++	adpctl_data_t adpctl;
++
++	adpctl.d32 = value;
++	adpctl.b.ar = 0x2;
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->adpctl, adpctl.d32);
++
++	while (adpctl.b.ar) {
++		adpctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->adpctl);
++	}
++
++}
++
++/**
++ * Function is called to read ADP registers
++ */
++uint32_t dwc_otg_adp_read_reg(dwc_otg_core_if_t * core_if)
++{
++	adpctl_data_t adpctl;
++
++	adpctl.d32 = 0;
++	adpctl.b.ar = 0x1;
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->adpctl, adpctl.d32);
++
++	while (adpctl.b.ar) {
++		adpctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->adpctl);
++	}
++
++	return adpctl.d32;
++}
++
++/**
++ * Function is called to read ADPCTL register and filter Write-clear bits
++ */
++uint32_t dwc_otg_adp_read_reg_filter(dwc_otg_core_if_t * core_if)
++{
++	adpctl_data_t adpctl;
++
++	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++	adpctl.b.adp_tmout_int = 0;
++	adpctl.b.adp_prb_int = 0;
++	adpctl.b.adp_tmout_int = 0;
++
++	return adpctl.d32;
++}
++
++/**
++ * Function is called to write ADP registers
++ */
++void dwc_otg_adp_modify_reg(dwc_otg_core_if_t * core_if, uint32_t clr,
++			    uint32_t set)
++{
++	dwc_otg_adp_write_reg(core_if,
++			      (dwc_otg_adp_read_reg(core_if) & (~clr)) | set);
++}
++
++static void adp_sense_timeout(void *ptr)
++{
++	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
++	core_if->adp.sense_timer_started = 0;
++	DWC_PRINTF("ADP SENSE TIMEOUT\n");
++	if (core_if->adp_enable) {
++		dwc_otg_adp_sense_stop(core_if);
++		dwc_otg_adp_probe_start(core_if);
++	}
++}
++
++/**
++ * This function is called when the ADP vbus timer expires. Timeout is 1.1s.
++ */
++static void adp_vbuson_timeout(void *ptr)
++{
++	gpwrdn_data_t gpwrdn;
++	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
++	hprt0_data_t hprt0 = {.d32 = 0 };
++	pcgcctl_data_t pcgcctl = {.d32 = 0 };
++	DWC_PRINTF("%s: 1.1 seconds expire after turning on VBUS\n",__FUNCTION__);
++	if (core_if) {
++		core_if->adp.vbuson_timer_started = 0;
++		/* Turn off vbus */
++		hprt0.b.prtpwr = 1;
++		DWC_MODIFY_REG32(core_if->host_if->hprt0, hprt0.d32, 0);
++		gpwrdn.d32 = 0;
++
++		/* Power off the core */
++		if (core_if->power_down == 2) {
++			/* Enable Wakeup Logic */
++//                      gpwrdn.b.wkupactiv = 1;
++			gpwrdn.b.pmuactv = 0;
++			gpwrdn.b.pwrdnrstn = 1;
++			gpwrdn.b.pwrdnclmp = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
++					 gpwrdn.d32);
++
++			/* Suspend the Phy Clock */
++			pcgcctl.b.stoppclk = 1;
++			DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
++
++			/* Switch on VDD */
++//                      gpwrdn.b.wkupactiv = 1;
++			gpwrdn.b.pmuactv = 1;
++			gpwrdn.b.pwrdnrstn = 1;
++			gpwrdn.b.pwrdnclmp = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
++					 gpwrdn.d32);
++		} else {
++			/* Enable Power Down Logic */
++			gpwrdn.b.pmuintsel = 1;
++			gpwrdn.b.pmuactv = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++		}
++
++		/* Power off the core */
++		if (core_if->power_down == 2) {
++			gpwrdn.d32 = 0;
++			gpwrdn.b.pwrdnswtch = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn,
++					 gpwrdn.d32, 0);
++		}
++
++		/* Unmask SRP detected interrupt from Power Down Logic */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.srp_det_msk = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++
++		dwc_otg_adp_probe_start(core_if);
++		dwc_otg_dump_global_registers(core_if);
++		dwc_otg_dump_host_registers(core_if);
++	}
++
++}
++
++/**
++ * Start the ADP Initial Probe timer to detect if Port Connected interrupt is
++ * not asserted within 1.1 seconds.
++ *
++ * @param core_if the pointer to core_if strucure.
++ */
++void dwc_otg_adp_vbuson_timer_start(dwc_otg_core_if_t * core_if)
++{
++	core_if->adp.vbuson_timer_started = 1;
++	if (core_if->adp.vbuson_timer)
++	{
++		DWC_PRINTF("SCHEDULING VBUSON TIMER\n");
++		/* 1.1 secs + 60ms necessary for cil_hcd_start*/
++		DWC_TIMER_SCHEDULE(core_if->adp.vbuson_timer, 1160);
++	} else {
++		DWC_WARN("VBUSON_TIMER = %p\n",core_if->adp.vbuson_timer);
++	}
++}
++
++#if 0
++/**
++ * Masks all DWC OTG core interrupts
++ *
++ */
++static void mask_all_interrupts(dwc_otg_core_if_t * core_if)
++{
++	int i;
++	gahbcfg_data_t ahbcfg = {.d32 = 0 };
++
++	/* Mask Host Interrupts */
++
++	/* Clear and disable HCINTs */
++	for (i = 0; i < core_if->core_params->host_channels; i++) {
++		DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcintmsk, 0);
++		DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcint, 0xFFFFFFFF);
++
++	}
++
++	/* Clear and disable HAINT */
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haintmsk, 0x0000);
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haint, 0xFFFFFFFF);
++
++	/* Mask Device Interrupts */
++	if (!core_if->multiproc_int_enable) {
++		/* Clear and disable IN Endpoint interrupts */
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->diepmsk, 0);
++		for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
++			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->
++					diepint, 0xFFFFFFFF);
++		}
++
++		/* Clear and disable OUT Endpoint interrupts */
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->doepmsk, 0);
++		for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
++			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->
++					doepint, 0xFFFFFFFF);
++		}
++
++		/* Clear and disable DAINT */
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daint,
++				0xFFFFFFFF);
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daintmsk, 0);
++	} else {
++		for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
++			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
++					diepeachintmsk[i], 0);
++			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->
++					diepint, 0xFFFFFFFF);
++		}
++
++		for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
++			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
++					doepeachintmsk[i], 0);
++			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->
++					doepint, 0xFFFFFFFF);
++		}
++
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->deachintmsk,
++				0);
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->deachint,
++				0xFFFFFFFF);
++
++	}
++
++	/* Disable interrupts */
++	ahbcfg.b.glblintrmsk = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
++
++	/* Disable all interrupts. */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0);
++
++	/* Clear any pending interrupts */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++
++	/* Clear any pending OTG Interrupts */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gotgint, 0xFFFFFFFF);
++}
++
++/**
++ * Unmask Port Connection Detected interrupt
++ *
++ */
++static void unmask_conn_det_intr(dwc_otg_core_if_t * core_if)
++{
++	gintmsk_data_t gintmsk = {.d32 = 0,.b.portintr = 1 };
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32);
++}
++#endif
++
++/**
++ * Starts the ADP Probing
++ *
++ * @param core_if the pointer to core_if structure.
++ */
++uint32_t dwc_otg_adp_probe_start(dwc_otg_core_if_t * core_if)
++{
++
++	adpctl_data_t adpctl = {.d32 = 0};
++	gpwrdn_data_t gpwrdn;
++#if 0
++	adpctl_data_t adpctl_int = {.d32 = 0, .b.adp_prb_int = 1,
++								.b.adp_sns_int = 1, b.adp_tmout_int};
++#endif
++	dwc_otg_disable_global_interrupts(core_if);
++	DWC_PRINTF("ADP Probe Start\n");
++	core_if->adp.probe_enabled = 1;
++
++	adpctl.b.adpres = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	while (adpctl.b.adpres) {
++		adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++	}
++
++	adpctl.d32 = 0;
++	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++
++	/* In Host mode unmask SRP detected interrupt */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.sts_chngint_msk = 1;
++	if (!gpwrdn.b.idsts) {
++		gpwrdn.b.srp_det_msk = 1;
++	}
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++
++	adpctl.b.adp_tmout_int_msk = 1;
++	adpctl.b.adp_prb_int_msk = 1;
++	adpctl.b.prb_dschg = 1;
++	adpctl.b.prb_delta = 1;
++	adpctl.b.prb_per = 1;
++	adpctl.b.adpen = 1;
++	adpctl.b.enaprb = 1;
++
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++	DWC_PRINTF("ADP Probe Finish\n");
++	return 0;
++}
++
++/**
++ * Starts the ADP Sense timer to detect if ADP Sense interrupt is not asserted
++ * within 3 seconds.
++ *
++ * @param core_if the pointer to core_if strucure.
++ */
++void dwc_otg_adp_sense_timer_start(dwc_otg_core_if_t * core_if)
++{
++	core_if->adp.sense_timer_started = 1;
++	DWC_TIMER_SCHEDULE(core_if->adp.sense_timer, 3000 /* 3 secs */ );
++}
++
++/**
++ * Starts the ADP Sense
++ *
++ * @param core_if the pointer to core_if strucure.
++ */
++uint32_t dwc_otg_adp_sense_start(dwc_otg_core_if_t * core_if)
++{
++	adpctl_data_t adpctl;
++
++	DWC_PRINTF("ADP Sense Start\n");
++
++	/* Unmask ADP sense interrupt and mask all other from the core */
++	adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
++	adpctl.b.adp_sns_int_msk = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++	dwc_otg_disable_global_interrupts(core_if); // vahrama
++
++	/* Set ADP reset bit*/
++	adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
++	adpctl.b.adpres = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	while (adpctl.b.adpres) {
++		adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++	}
++
++	adpctl.b.adpres = 0;
++	adpctl.b.adpen = 1;
++	adpctl.b.enasns = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	dwc_otg_adp_sense_timer_start(core_if);
++
++	return 0;
++}
++
++/**
++ * Stops the ADP Probing
++ *
++ * @param core_if the pointer to core_if strucure.
++ */
++uint32_t dwc_otg_adp_probe_stop(dwc_otg_core_if_t * core_if)
++{
++
++	adpctl_data_t adpctl;
++	DWC_PRINTF("Stop ADP probe\n");
++	core_if->adp.probe_enabled = 0;
++	core_if->adp.probe_counter = 0;
++	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++
++	adpctl.b.adpen = 0;
++	adpctl.b.adp_prb_int = 1;
++	adpctl.b.adp_tmout_int = 1;
++	adpctl.b.adp_sns_int = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	return 0;
++}
++
++/**
++ * Stops the ADP Sensing
++ *
++ * @param core_if the pointer to core_if strucure.
++ */
++uint32_t dwc_otg_adp_sense_stop(dwc_otg_core_if_t * core_if)
++{
++	adpctl_data_t adpctl;
++
++	core_if->adp.sense_enabled = 0;
++
++	adpctl.d32 = dwc_otg_adp_read_reg_filter(core_if);
++	adpctl.b.enasns = 0;
++	adpctl.b.adp_sns_int = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	return 0;
++}
++
++/**
++ * Called to turn on the VBUS after initial ADP probe in host mode.
++ * If port power was already enabled in cil_hcd_start function then
++ * only schedule a timer.
++ *
++ * @param core_if the pointer to core_if structure.
++ */
++void dwc_otg_adp_turnon_vbus(dwc_otg_core_if_t * core_if)
++{
++	hprt0_data_t hprt0 = {.d32 = 0 };
++	hprt0.d32 = dwc_otg_read_hprt0(core_if);
++	DWC_PRINTF("Turn on VBUS for 1.1s, port power is %d\n", hprt0.b.prtpwr);
++
++	if (hprt0.b.prtpwr == 0) {
++		hprt0.b.prtpwr = 1;
++		//DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++	}
++
++	dwc_otg_adp_vbuson_timer_start(core_if);
++}
++
++/**
++ * Called right after driver is loaded
++ * to perform initial actions for ADP
++ *
++ * @param core_if the pointer to core_if structure.
++ * @param is_host - flag for current mode of operation either from GINTSTS or GPWRDN
++ */
++void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host)
++{
++	gpwrdn_data_t gpwrdn;
++
++	DWC_PRINTF("ADP Initial Start\n");
++	core_if->adp.adp_started = 1;
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++	dwc_otg_disable_global_interrupts(core_if);
++	if (is_host) {
++		DWC_PRINTF("HOST MODE\n");
++		/* Enable Power Down Logic Interrupt*/
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pmuintsel = 1;
++		gpwrdn.b.pmuactv = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++		/* Initialize first ADP probe to obtain Ramp Time value */
++		core_if->adp.initial_probe = 1;
++		dwc_otg_adp_probe_start(core_if);
++	} else {
++		gotgctl_data_t gotgctl;
++		gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++		DWC_PRINTF("DEVICE MODE\n");
++		if (gotgctl.b.bsesvld == 0) {
++			/* Enable Power Down Logic Interrupt*/
++			gpwrdn.d32 = 0;
++			DWC_PRINTF("VBUS is not valid - start ADP probe\n");
++			gpwrdn.b.pmuintsel = 1;
++			gpwrdn.b.pmuactv = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++			core_if->adp.initial_probe = 1;
++			dwc_otg_adp_probe_start(core_if);
++		} else {
++			DWC_PRINTF("VBUS is valid - initialize core as a Device\n");
++			core_if->op_state = B_PERIPHERAL;
++			dwc_otg_core_init(core_if);
++			dwc_otg_enable_global_interrupts(core_if);
++			cil_pcd_start(core_if);
++			dwc_otg_dump_global_registers(core_if);
++			dwc_otg_dump_dev_registers(core_if);
++		}
++	}
++}
++
++void dwc_otg_adp_init(dwc_otg_core_if_t * core_if)
++{
++	core_if->adp.adp_started = 0;
++	core_if->adp.initial_probe = 0;
++	core_if->adp.probe_timer_values[0] = -1;
++	core_if->adp.probe_timer_values[1] = -1;
++	core_if->adp.probe_enabled = 0;
++	core_if->adp.sense_enabled = 0;
++	core_if->adp.sense_timer_started = 0;
++	core_if->adp.vbuson_timer_started = 0;
++	core_if->adp.probe_counter = 0;
++	core_if->adp.gpwrdn = 0;
++	core_if->adp.attached = DWC_OTG_ADP_UNKOWN;
++	/* Initialize timers */
++	core_if->adp.sense_timer =
++	    DWC_TIMER_ALLOC("ADP SENSE TIMER", adp_sense_timeout, core_if);
++	core_if->adp.vbuson_timer =
++	    DWC_TIMER_ALLOC("ADP VBUS ON TIMER", adp_vbuson_timeout, core_if);
++	if (!core_if->adp.sense_timer || !core_if->adp.vbuson_timer)
++	{
++		DWC_ERROR("Could not allocate memory for ADP timers\n");
++	}
++}
++
++void dwc_otg_adp_remove(dwc_otg_core_if_t * core_if)
++{
++	gpwrdn_data_t gpwrdn = { .d32 = 0 };
++	gpwrdn.b.pmuintsel = 1;
++	gpwrdn.b.pmuactv = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	if (core_if->adp.probe_enabled)
++		dwc_otg_adp_probe_stop(core_if);
++	if (core_if->adp.sense_enabled)
++		dwc_otg_adp_sense_stop(core_if);
++	if (core_if->adp.sense_timer_started)
++		DWC_TIMER_CANCEL(core_if->adp.sense_timer);
++	if (core_if->adp.vbuson_timer_started)
++		DWC_TIMER_CANCEL(core_if->adp.vbuson_timer);
++	DWC_TIMER_FREE(core_if->adp.sense_timer);
++	DWC_TIMER_FREE(core_if->adp.vbuson_timer);
++}
++
++/////////////////////////////////////////////////////////////////////
++////////////// ADP Interrupt Handlers ///////////////////////////////
++/////////////////////////////////////////////////////////////////////
++/**
++ * This function sets Ramp Timer values
++ */
++static uint32_t set_timer_value(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	if (core_if->adp.probe_timer_values[0] == -1) {
++		core_if->adp.probe_timer_values[0] = val;
++		core_if->adp.probe_timer_values[1] = -1;
++		return 1;
++	} else {
++		core_if->adp.probe_timer_values[1] =
++		    core_if->adp.probe_timer_values[0];
++		core_if->adp.probe_timer_values[0] = val;
++		return 0;
++	}
++}
++
++/**
++ * This function compares Ramp Timer values
++ */
++static uint32_t compare_timer_values(dwc_otg_core_if_t * core_if)
++{
++	uint32_t diff;
++	if (core_if->adp.probe_timer_values[0]>=core_if->adp.probe_timer_values[1])
++			diff = core_if->adp.probe_timer_values[0]-core_if->adp.probe_timer_values[1];
++	else
++			diff = core_if->adp.probe_timer_values[1]-core_if->adp.probe_timer_values[0];
++	if(diff < 2) {
++		return 0;
++	} else {
++		return 1;
++	}
++}
++
++/**
++ * This function handles ADP Probe Interrupts
++ */
++static int32_t dwc_otg_adp_handle_prb_intr(dwc_otg_core_if_t * core_if,
++						 uint32_t val)
++{
++	adpctl_data_t adpctl = {.d32 = 0 };
++	gpwrdn_data_t gpwrdn, temp;
++	adpctl.d32 = val;
++
++	temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++	core_if->adp.probe_counter++;
++	core_if->adp.gpwrdn = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++	if (adpctl.b.rtim == 0 && !temp.b.idsts){
++		DWC_PRINTF("RTIM value is 0\n");
++		goto exit;
++	}
++	if (set_timer_value(core_if, adpctl.b.rtim) &&
++	    core_if->adp.initial_probe) {
++		core_if->adp.initial_probe = 0;
++		dwc_otg_adp_probe_stop(core_if);
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pmuactv = 1;
++		gpwrdn.b.pmuintsel = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++
++		/* check which value is for device mode and which for Host mode */
++		if (!temp.b.idsts) {	/* considered host mode value is 0 */
++			/*
++			 * Turn on VBUS after initial ADP probe.
++			 */
++			core_if->op_state = A_HOST;
++			dwc_otg_enable_global_interrupts(core_if);
++			DWC_SPINUNLOCK(core_if->lock);
++			cil_hcd_start(core_if);
++			dwc_otg_adp_turnon_vbus(core_if);
++			DWC_SPINLOCK(core_if->lock);
++		} else {
++			/*
++			 * Initiate SRP after initial ADP probe.
++			 */
++			dwc_otg_enable_global_interrupts(core_if);
++			dwc_otg_initiate_srp(core_if);
++		}
++	} else if (core_if->adp.probe_counter > 2){
++		gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++		if (compare_timer_values(core_if)) {
++			DWC_PRINTF("Difference in timer values !!! \n");
++//                      core_if->adp.attached = DWC_OTG_ADP_ATTACHED;
++			dwc_otg_adp_probe_stop(core_if);
++
++			/* Power on the core */
++			if (core_if->power_down == 2) {
++				gpwrdn.b.pwrdnswtch = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++			}
++
++			/* check which value is for device mode and which for Host mode */
++			if (!temp.b.idsts) {	/* considered host mode value is 0 */
++				/* Disable Interrupt from Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuintsel = 1;
++				gpwrdn.b.pmuactv = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, gpwrdn.d32, 0);
++
++				/*
++				 * Initialize the Core for Host mode.
++				 */
++				core_if->op_state = A_HOST;
++				dwc_otg_core_init(core_if);
++				dwc_otg_enable_global_interrupts(core_if);
++				cil_hcd_start(core_if);
++			} else {
++				gotgctl_data_t gotgctl;
++				/* Mask SRP detected interrupt from Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.srp_det_msk = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, gpwrdn.d32, 0);
++
++				/* Disable Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuintsel = 1;
++				gpwrdn.b.pmuactv = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, gpwrdn.d32, 0);
++
++				/*
++				 * Initialize the Core for Device mode.
++				 */
++				core_if->op_state = B_PERIPHERAL;
++				dwc_otg_core_init(core_if);
++				dwc_otg_enable_global_interrupts(core_if);
++				cil_pcd_start(core_if);
++
++				gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++				if (!gotgctl.b.bsesvld) {
++					dwc_otg_initiate_srp(core_if);
++				}
++			}
++		}
++		if (core_if->power_down == 2) {
++			if (gpwrdn.b.bsessvld) {
++				/* Mask SRP detected interrupt from Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.srp_det_msk = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++				/* Disable Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuactv = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++				/*
++				 * Initialize the Core for Device mode.
++				 */
++				core_if->op_state = B_PERIPHERAL;
++				dwc_otg_core_init(core_if);
++				dwc_otg_enable_global_interrupts(core_if);
++				cil_pcd_start(core_if);
++			}
++		}
++	}
++exit:
++	/* Clear interrupt */
++	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++	adpctl.b.adp_prb_int = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	return 0;
++}
++
++/**
++ * This function hadles ADP Sense Interrupt
++ */
++static int32_t dwc_otg_adp_handle_sns_intr(dwc_otg_core_if_t * core_if)
++{
++	adpctl_data_t adpctl;
++	/* Stop ADP Sense timer */
++	DWC_TIMER_CANCEL(core_if->adp.sense_timer);
++
++	/* Restart ADP Sense timer */
++	dwc_otg_adp_sense_timer_start(core_if);
++
++	/* Clear interrupt */
++	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++	adpctl.b.adp_sns_int = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	return 0;
++}
++
++/**
++ * This function handles ADP Probe Interrupts
++ */
++static int32_t dwc_otg_adp_handle_prb_tmout_intr(dwc_otg_core_if_t * core_if,
++						 uint32_t val)
++{
++	adpctl_data_t adpctl = {.d32 = 0 };
++	adpctl.d32 = val;
++	set_timer_value(core_if, adpctl.b.rtim);
++
++	/* Clear interrupt */
++	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++	adpctl.b.adp_tmout_int = 1;
++	dwc_otg_adp_write_reg(core_if, adpctl.d32);
++
++	return 0;
++}
++
++/**
++ * ADP Interrupt handler.
++ *
++ */
++int32_t dwc_otg_adp_handle_intr(dwc_otg_core_if_t * core_if)
++{
++	int retval = 0;
++	adpctl_data_t adpctl = {.d32 = 0};
++
++	adpctl.d32 = dwc_otg_adp_read_reg(core_if);
++	DWC_PRINTF("ADPCTL = %08x\n",adpctl.d32);
++
++	if (adpctl.b.adp_sns_int & adpctl.b.adp_sns_int_msk) {
++		DWC_PRINTF("ADP Sense interrupt\n");
++		retval |= dwc_otg_adp_handle_sns_intr(core_if);
++	}
++	if (adpctl.b.adp_tmout_int & adpctl.b.adp_tmout_int_msk) {
++		DWC_PRINTF("ADP timeout interrupt\n");
++		retval |= dwc_otg_adp_handle_prb_tmout_intr(core_if, adpctl.d32);
++	}
++	if (adpctl.b.adp_prb_int & adpctl.b.adp_prb_int_msk) {
++		DWC_PRINTF("ADP Probe interrupt\n");
++		adpctl.b.adp_prb_int = 1;
++		retval |= dwc_otg_adp_handle_prb_intr(core_if, adpctl.d32);
++	}
++
++//	dwc_otg_adp_modify_reg(core_if, adpctl.d32, 0);
++	//dwc_otg_adp_write_reg(core_if, adpctl.d32);
++	DWC_PRINTF("RETURN FROM ADP ISR\n");
++
++	return retval;
++}
++
++/**
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++int32_t dwc_otg_adp_handle_srp_intr(dwc_otg_core_if_t * core_if)
++{
++
++#ifndef DWC_HOST_ONLY
++	hprt0_data_t hprt0;
++	gpwrdn_data_t gpwrdn;
++	DWC_DEBUGPL(DBG_ANY, "++ Power Down Logic Session Request Interrupt++\n");
++
++	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++	/* check which value is for device mode and which for Host mode */
++	if (!gpwrdn.b.idsts) {	/* considered host mode value is 0 */
++		DWC_PRINTF("SRP: Host mode\n");
++
++		if (core_if->adp_enable) {
++			dwc_otg_adp_probe_stop(core_if);
++
++			/* Power on the core */
++			if (core_if->power_down == 2) {
++				gpwrdn.b.pwrdnswtch = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++			}
++
++			core_if->op_state = A_HOST;
++			dwc_otg_core_init(core_if);
++			dwc_otg_enable_global_interrupts(core_if);
++			cil_hcd_start(core_if);
++		}
++
++		/* Turn on the port power bit. */
++		hprt0.d32 = dwc_otg_read_hprt0(core_if);
++		hprt0.b.prtpwr = 1;
++		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++		/* Start the Connection timer. So a message can be displayed
++		 * if connect does not occur within 10 seconds. */
++		cil_hcd_session_start(core_if);
++	} else {
++		DWC_PRINTF("SRP: Device mode %s\n", __FUNCTION__);
++		if (core_if->adp_enable) {
++			dwc_otg_adp_probe_stop(core_if);
++
++			/* Power on the core */
++			if (core_if->power_down == 2) {
++				gpwrdn.b.pwrdnswtch = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++			}
++
++			gpwrdn.d32 = 0;
++			gpwrdn.b.pmuactv = 0;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
++					 gpwrdn.d32);
++
++			core_if->op_state = B_PERIPHERAL;
++			dwc_otg_core_init(core_if);
++			dwc_otg_enable_global_interrupts(core_if);
++			cil_pcd_start(core_if);
++		}
++	}
++#endif
++	return 1;
++}
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_adp.h
+@@ -0,0 +1,80 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_adp.h $
++ * $Revision: #7 $
++ * $Date: 2011/10/24 $
++ * $Change: 1871159 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#ifndef __DWC_OTG_ADP_H__
++#define __DWC_OTG_ADP_H__
++
++/**
++ * @file
++ *
++ * This file contains the Attach Detect Protocol interfaces and defines
++ * (functions) and structures for Linux.
++ *
++ */
++
++#define DWC_OTG_ADP_UNATTACHED	0
++#define DWC_OTG_ADP_ATTACHED	1
++#define DWC_OTG_ADP_UNKOWN	2
++
++typedef struct dwc_otg_adp {
++	uint32_t adp_started;
++	uint32_t initial_probe;
++	int32_t probe_timer_values[2];
++	uint32_t probe_enabled;
++	uint32_t sense_enabled;
++	dwc_timer_t *sense_timer;
++	uint32_t sense_timer_started;
++	dwc_timer_t *vbuson_timer;
++	uint32_t vbuson_timer_started;
++	uint32_t attached;
++	uint32_t probe_counter;
++	uint32_t gpwrdn;
++} dwc_otg_adp_t;
++
++/**
++ * Attach Detect Protocol functions
++ */
++
++extern void dwc_otg_adp_write_reg(dwc_otg_core_if_t * core_if, uint32_t value);
++extern uint32_t dwc_otg_adp_read_reg(dwc_otg_core_if_t * core_if);
++extern uint32_t dwc_otg_adp_probe_start(dwc_otg_core_if_t * core_if);
++extern uint32_t dwc_otg_adp_sense_start(dwc_otg_core_if_t * core_if);
++extern uint32_t dwc_otg_adp_probe_stop(dwc_otg_core_if_t * core_if);
++extern uint32_t dwc_otg_adp_sense_stop(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host);
++extern void dwc_otg_adp_init(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_adp_remove(dwc_otg_core_if_t * core_if);
++extern int32_t dwc_otg_adp_handle_intr(dwc_otg_core_if_t * core_if);
++extern int32_t dwc_otg_adp_handle_srp_intr(dwc_otg_core_if_t * core_if);
++
++#endif //__DWC_OTG_ADP_H__
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_attr.c
+@@ -0,0 +1,1212 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.c $
++ * $Revision: #44 $
++ * $Date: 2010/11/29 $
++ * $Change: 1636033 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++/** @file
++ *
++ * The diagnostic interface will provide access to the controller for
++ * bringing up the hardware and testing.  The Linux driver attributes
++ * feature will be used to provide the Linux Diagnostic
++ * Interface. These attributes are accessed through sysfs.
++ */
++
++/** @page "Linux Module Attributes"
++ *
++ * The Linux module attributes feature is used to provide the Linux
++ * Diagnostic Interface.  These attributes are accessed through sysfs.
++ * The diagnostic interface will provide access to the controller for
++ * bringing up the hardware and testing.
++
++ The following table shows the attributes.
++ <table>
++ <tr>
++ <td><b> Name</b></td>
++ <td><b> Description</b></td>
++ <td><b> Access</b></td>
++ </tr>
++
++ <tr>
++ <td> mode </td>
++ <td> Returns the current mode: 0 for device mode, 1 for host mode</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> hnpcapable </td>
++ <td> Gets or sets the "HNP-capable" bit in the Core USB Configuraton Register.
++ Read returns the current value.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> srpcapable </td>
++ <td> Gets or sets the "SRP-capable" bit in the Core USB Configuraton Register.
++ Read returns the current value.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> hsic_connect </td>
++ <td> Gets or sets the "HSIC-Connect" bit in the GLPMCFG Register.
++ Read returns the current value.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> inv_sel_hsic </td>
++ <td> Gets or sets the "Invert Select HSIC" bit in the GLPMFG Register.
++ Read returns the current value.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> hnp </td>
++ <td> Initiates the Host Negotiation Protocol.  Read returns the status.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> srp </td>
++ <td> Initiates the Session Request Protocol.  Read returns the status.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> buspower </td>
++ <td> Gets or sets the Power State of the bus (0 - Off or 1 - On)</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> bussuspend </td>
++ <td> Suspends the USB bus.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> busconnected </td>
++ <td> Gets the connection status of the bus</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> gotgctl </td>
++ <td> Gets or sets the Core Control Status Register.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> gusbcfg </td>
++ <td> Gets or sets the Core USB Configuration Register</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> grxfsiz </td>
++ <td> Gets or sets the Receive FIFO Size Register</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> gnptxfsiz </td>
++ <td> Gets or sets the non-periodic Transmit Size Register</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> gpvndctl </td>
++ <td> Gets or sets the PHY Vendor Control Register</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> ggpio </td>
++ <td> Gets the value in the lower 16-bits of the General Purpose IO Register
++ or sets the upper 16 bits.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> guid </td>
++ <td> Gets or sets the value of the User ID Register</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> gsnpsid </td>
++ <td> Gets the value of the Synopsys ID Regester</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> devspeed </td>
++ <td> Gets or sets the device speed setting in the DCFG register</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> enumspeed </td>
++ <td> Gets the device enumeration Speed.</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> hptxfsiz </td>
++ <td> Gets the value of the Host Periodic Transmit FIFO</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> hprt0 </td>
++ <td> Gets or sets the value in the Host Port Control and Status Register</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> regoffset </td>
++ <td> Sets the register offset for the next Register Access</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> regvalue </td>
++ <td> Gets or sets the value of the register at the offset in the regoffset attribute.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> remote_wakeup </td>
++ <td> On read, shows the status of Remote Wakeup. On write, initiates a remote
++ wakeup of the host. When bit 0 is 1 and Remote Wakeup is enabled, the Remote
++ Wakeup signalling bit in the Device Control Register is set for 1
++ milli-second.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> rem_wakeup_pwrdn </td>
++ <td> On read, shows the status core - hibernated or not. On write, initiates
++ a remote wakeup of the device from Hibernation. </td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> mode_ch_tim_en </td>
++ <td> This bit is used to enable or disable the host core to wait for 200 PHY
++ clock cycles at the end of Resume to change the opmode signal to the PHY to 00
++ after Suspend or LPM. </td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> fr_interval </td>
++ <td> On read, shows the value of HFIR Frame Interval. On write, dynamically
++ reload HFIR register during runtime. The application can write a value to this
++ register only after the Port Enable bit of the Host Port Control and Status
++ register (HPRT.PrtEnaPort) has been set </td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> disconnect_us </td>
++ <td> On read, shows the status of disconnect_device_us. On write, sets disconnect_us
++ which causes soft disconnect for 100us. Applicable only for device mode of operation.</td>
++ <td> Read/Write</td>
++ </tr>
++
++ <tr>
++ <td> regdump </td>
++ <td> Dumps the contents of core registers.</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> spramdump </td>
++ <td> Dumps the contents of core registers.</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> hcddump </td>
++ <td> Dumps the current HCD state.</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> hcd_frrem </td>
++ <td> Shows the average value of the Frame Remaining
++ field in the Host Frame Number/Frame Remaining register when an SOF interrupt
++ occurs. This can be used to determine the average interrupt latency. Also
++ shows the average Frame Remaining value for start_transfer and the "a" and
++ "b" sample points. The "a" and "b" sample points may be used during debugging
++ bto determine how long it takes to execute a section of the HCD code.</td>
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> rd_reg_test </td>
++ <td> Displays the time required to read the GNPTXFSIZ register many times
++ (the output shows the number of times the register is read).
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> wr_reg_test </td>
++ <td> Displays the time required to write the GNPTXFSIZ register many times
++ (the output shows the number of times the register is written).
++ <td> Read</td>
++ </tr>
++
++ <tr>
++ <td> lpm_response </td>
++ <td> Gets or sets lpm_response mode. Applicable only in device mode.
++ <td> Write</td>
++ </tr>
++
++ <tr>
++ <td> sleep_status </td>
++ <td> Shows sleep status of device.
++ <td> Read</td>
++ </tr>
++
++ </table>
++
++ Example usage:
++ To get the current mode:
++ cat /sys/devices/lm0/mode
++
++ To power down the USB:
++ echo 0 > /sys/devices/lm0/buspower
++ */
++
++#include "dwc_otg_os_dep.h"
++#include "dwc_os.h"
++#include "dwc_otg_driver.h"
++#include "dwc_otg_attr.h"
++#include "dwc_otg_core_if.h"
++#include "dwc_otg_pcd_if.h"
++#include "dwc_otg_hcd_if.h"
++
++/*
++ * MACROs for defining sysfs attribute
++ */
++#ifdef LM_INTERFACE
++
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
++{ \
++	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
++	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev);		\
++	uint32_t val; \
++	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
++	return sprintf (buf, "%s = 0x%x\n", _string_, val); \
++}
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
++					const char *buf, size_t count) \
++{ \
++	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
++	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
++	uint32_t set = simple_strtoul(buf, NULL, 16); \
++	dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
++	return count; \
++}
++
++#elif defined(PCI_INTERFACE)
++
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
++{ \
++	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);	\
++	uint32_t val; \
++	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
++	return sprintf (buf, "%s = 0x%x\n", _string_, val); \
++}
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
++					const char *buf, size_t count) \
++{ \
++	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
++	uint32_t set = simple_strtoul(buf, NULL, 16); \
++	dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
++	return count; \
++}
++
++#elif defined(PLATFORM_INTERFACE)
++
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
++{ \
++        struct platform_device *platform_dev = \
++                container_of(_dev, struct platform_device, dev); \
++        dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev);  \
++	uint32_t val; \
++	DWC_PRINTF("%s(%p) -> platform_dev %p, otg_dev %p\n", \
++                    __func__, _dev, platform_dev, otg_dev); \
++	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
++	return sprintf (buf, "%s = 0x%x\n", _string_, val); \
++}
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
++					const char *buf, size_t count) \
++{ \
++        struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
++        dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
++	uint32_t set = simple_strtoul(buf, NULL, 16); \
++	dwc_otg_set_##_otg_attr_name_(otg_dev->core_if, set);\
++	return count; \
++}
++#endif
++
++/*
++ * MACROs for defining sysfs attribute for 32-bit registers
++ */
++#ifdef LM_INTERFACE
++#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
++{ \
++	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
++	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
++	uint32_t val; \
++	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
++	return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
++}
++#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
++					const char *buf, size_t count) \
++{ \
++	struct lm_device *lm_dev = container_of(_dev, struct lm_device, dev); \
++	dwc_otg_device_t *otg_dev = lm_get_drvdata(lm_dev); \
++	uint32_t val = simple_strtoul(buf, NULL, 16); \
++	dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
++	return count; \
++}
++#elif defined(PCI_INTERFACE)
++#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
++{ \
++	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
++	uint32_t val; \
++	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
++	return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
++}
++#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
++					const char *buf, size_t count) \
++{ \
++	dwc_otg_device_t *otg_dev = dev_get_drvdata(_dev);  \
++	uint32_t val = simple_strtoul(buf, NULL, 16); \
++	dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
++	return count; \
++}
++
++#elif defined(PLATFORM_INTERFACE)
++#include "dwc_otg_dbg.h"
++#define DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_show (struct device *_dev, struct device_attribute *attr, char *buf) \
++{ \
++	struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
++	dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
++	uint32_t val; \
++	DWC_PRINTF("%s(%p) -> platform_dev %p, otg_dev %p\n", \
++                    __func__, _dev, platform_dev, otg_dev); \
++	val = dwc_otg_get_##_otg_attr_name_ (otg_dev->core_if); \
++	return sprintf (buf, "%s = 0x%08x\n", _string_, val); \
++}
++#define DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
++static ssize_t _otg_attr_name_##_store (struct device *_dev, struct device_attribute *attr, \
++					const char *buf, size_t count) \
++{ \
++	struct platform_device *platform_dev = container_of(_dev, struct platform_device, dev); \
++	dwc_otg_device_t *otg_dev = platform_get_drvdata(platform_dev); \
++	uint32_t val = simple_strtoul(buf, NULL, 16); \
++	dwc_otg_set_##_otg_attr_name_ (otg_dev->core_if, val); \
++	return count; \
++}
++
++#endif
++
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_RW(_otg_attr_name_,_string_) \
++DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
++DWC_OTG_DEVICE_ATTR_BITFIELD_STORE(_otg_attr_name_,_string_) \
++DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
++
++#define DWC_OTG_DEVICE_ATTR_BITFIELD_RO(_otg_attr_name_,_string_) \
++DWC_OTG_DEVICE_ATTR_BITFIELD_SHOW(_otg_attr_name_,_string_) \
++DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
++
++#define DWC_OTG_DEVICE_ATTR_REG32_RW(_otg_attr_name_,_addr_,_string_) \
++DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
++DWC_OTG_DEVICE_ATTR_REG_STORE(_otg_attr_name_,_string_) \
++DEVICE_ATTR(_otg_attr_name_,0644,_otg_attr_name_##_show,_otg_attr_name_##_store);
++
++#define DWC_OTG_DEVICE_ATTR_REG32_RO(_otg_attr_name_,_addr_,_string_) \
++DWC_OTG_DEVICE_ATTR_REG_SHOW(_otg_attr_name_,_string_) \
++DEVICE_ATTR(_otg_attr_name_,0444,_otg_attr_name_##_show,NULL);
++
++/** @name Functions for Show/Store of Attributes */
++/**@{*/
++
++/**
++ * Helper function returning the otg_device structure of the given device
++ */
++static dwc_otg_device_t *dwc_otg_drvdev(struct device *_dev)
++{
++        dwc_otg_device_t *otg_dev;
++        DWC_OTG_GETDRVDEV(otg_dev, _dev);
++        return otg_dev;
++}
++
++/**
++ * Show the register offset of the Register Access.
++ */
++static ssize_t regoffset_show(struct device *_dev,
++			      struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return snprintf(buf, sizeof("0xFFFFFFFF\n") + 1, "0x%08x\n",
++			otg_dev->os_dep.reg_offset);
++}
++
++/**
++ * Set the register offset for the next Register Access 	Read/Write
++ */
++static ssize_t regoffset_store(struct device *_dev,
++			       struct device_attribute *attr,
++			       const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t offset = simple_strtoul(buf, NULL, 16);
++#if defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
++	if (offset < SZ_256K) {
++#elif  defined(PCI_INTERFACE)
++	if (offset < 0x00040000) {
++#endif
++		otg_dev->os_dep.reg_offset = offset;
++	} else {
++		dev_err(_dev, "invalid offset\n");
++	}
++
++	return count;
++}
++
++DEVICE_ATTR(regoffset, S_IRUGO | S_IWUSR, regoffset_show, regoffset_store);
++
++/**
++ * Show the value of the register at the offset in the reg_offset
++ * attribute.
++ */
++static ssize_t regvalue_show(struct device *_dev,
++			     struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t val;
++	volatile uint32_t *addr;
++
++	if (otg_dev->os_dep.reg_offset != 0xFFFFFFFF && 0 != otg_dev->os_dep.base) {
++		/* Calculate the address */
++		addr = (uint32_t *) (otg_dev->os_dep.reg_offset +
++				     (uint8_t *) otg_dev->os_dep.base);
++		val = DWC_READ_REG32(addr);
++		return snprintf(buf,
++				sizeof("Reg@0xFFFFFFFF = 0xFFFFFFFF\n") + 1,
++				"Reg@0x%06x = 0x%08x\n", otg_dev->os_dep.reg_offset,
++				val);
++	} else {
++		dev_err(_dev, "Invalid offset (0x%0x)\n", otg_dev->os_dep.reg_offset);
++		return sprintf(buf, "invalid offset\n");
++	}
++}
++
++/**
++ * Store the value in the register at the offset in the reg_offset
++ * attribute.
++ *
++ */
++static ssize_t regvalue_store(struct device *_dev,
++			      struct device_attribute *attr,
++			      const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	volatile uint32_t *addr;
++	uint32_t val = simple_strtoul(buf, NULL, 16);
++	//dev_dbg(_dev, "Offset=0x%08x Val=0x%08x\n", otg_dev->reg_offset, val);
++	if (otg_dev->os_dep.reg_offset != 0xFFFFFFFF && 0 != otg_dev->os_dep.base) {
++		/* Calculate the address */
++		addr = (uint32_t *) (otg_dev->os_dep.reg_offset +
++				     (uint8_t *) otg_dev->os_dep.base);
++		DWC_WRITE_REG32(addr, val);
++	} else {
++		dev_err(_dev, "Invalid Register Offset (0x%08x)\n",
++			otg_dev->os_dep.reg_offset);
++	}
++	return count;
++}
++
++DEVICE_ATTR(regvalue, S_IRUGO | S_IWUSR, regvalue_show, regvalue_store);
++
++/*
++ * Attributes
++ */
++DWC_OTG_DEVICE_ATTR_BITFIELD_RO(mode, "Mode");
++DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hnpcapable, "HNPCapable");
++DWC_OTG_DEVICE_ATTR_BITFIELD_RW(srpcapable, "SRPCapable");
++DWC_OTG_DEVICE_ATTR_BITFIELD_RW(hsic_connect, "HSIC Connect");
++DWC_OTG_DEVICE_ATTR_BITFIELD_RW(inv_sel_hsic, "Invert Select HSIC");
++
++//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(buspower,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
++//DWC_OTG_DEVICE_ATTR_BITFIELD_RW(bussuspend,&(otg_dev->core_if->core_global_regs->gotgctl),(1<<8),8,"Mode");
++DWC_OTG_DEVICE_ATTR_BITFIELD_RO(busconnected, "Bus Connected");
++
++DWC_OTG_DEVICE_ATTR_REG32_RW(gotgctl, 0, "GOTGCTL");
++DWC_OTG_DEVICE_ATTR_REG32_RW(gusbcfg,
++			     &(otg_dev->core_if->core_global_regs->gusbcfg),
++			     "GUSBCFG");
++DWC_OTG_DEVICE_ATTR_REG32_RW(grxfsiz,
++			     &(otg_dev->core_if->core_global_regs->grxfsiz),
++			     "GRXFSIZ");
++DWC_OTG_DEVICE_ATTR_REG32_RW(gnptxfsiz,
++			     &(otg_dev->core_if->core_global_regs->gnptxfsiz),
++			     "GNPTXFSIZ");
++DWC_OTG_DEVICE_ATTR_REG32_RW(gpvndctl,
++			     &(otg_dev->core_if->core_global_regs->gpvndctl),
++			     "GPVNDCTL");
++DWC_OTG_DEVICE_ATTR_REG32_RW(ggpio,
++			     &(otg_dev->core_if->core_global_regs->ggpio),
++			     "GGPIO");
++DWC_OTG_DEVICE_ATTR_REG32_RW(guid, &(otg_dev->core_if->core_global_regs->guid),
++			     "GUID");
++DWC_OTG_DEVICE_ATTR_REG32_RO(gsnpsid,
++			     &(otg_dev->core_if->core_global_regs->gsnpsid),
++			     "GSNPSID");
++DWC_OTG_DEVICE_ATTR_BITFIELD_RW(devspeed, "Device Speed");
++DWC_OTG_DEVICE_ATTR_BITFIELD_RO(enumspeed, "Device Enumeration Speed");
++
++DWC_OTG_DEVICE_ATTR_REG32_RO(hptxfsiz,
++			     &(otg_dev->core_if->core_global_regs->hptxfsiz),
++			     "HPTXFSIZ");
++DWC_OTG_DEVICE_ATTR_REG32_RW(hprt0, otg_dev->core_if->host_if->hprt0, "HPRT0");
++
++/**
++ * @todo Add code to initiate the HNP.
++ */
++/**
++ * Show the HNP status bit
++ */
++static ssize_t hnp_show(struct device *_dev,
++			struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return sprintf(buf, "HstNegScs = 0x%x\n",
++		       dwc_otg_get_hnpstatus(otg_dev->core_if));
++}
++
++/**
++ * Set the HNP Request bit
++ */
++static ssize_t hnp_store(struct device *_dev,
++			 struct device_attribute *attr,
++			 const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t in = simple_strtoul(buf, NULL, 16);
++	dwc_otg_set_hnpreq(otg_dev->core_if, in);
++	return count;
++}
++
++DEVICE_ATTR(hnp, 0644, hnp_show, hnp_store);
++
++/**
++ * @todo Add code to initiate the SRP.
++ */
++/**
++ * Show the SRP status bit
++ */
++static ssize_t srp_show(struct device *_dev,
++			struct device_attribute *attr, char *buf)
++{
++#ifndef DWC_HOST_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return sprintf(buf, "SesReqScs = 0x%x\n",
++		       dwc_otg_get_srpstatus(otg_dev->core_if));
++#else
++	return sprintf(buf, "Host Only Mode!\n");
++#endif
++}
++
++/**
++ * Set the SRP Request bit
++ */
++static ssize_t srp_store(struct device *_dev,
++			 struct device_attribute *attr,
++			 const char *buf, size_t count)
++{
++#ifndef DWC_HOST_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	dwc_otg_pcd_initiate_srp(otg_dev->pcd);
++#endif
++	return count;
++}
++
++DEVICE_ATTR(srp, 0644, srp_show, srp_store);
++
++/**
++ * @todo Need to do more for power on/off?
++ */
++/**
++ * Show the Bus Power status
++ */
++static ssize_t buspower_show(struct device *_dev,
++			     struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return sprintf(buf, "Bus Power = 0x%x\n",
++		       dwc_otg_get_prtpower(otg_dev->core_if));
++}
++
++/**
++ * Set the Bus Power status
++ */
++static ssize_t buspower_store(struct device *_dev,
++			      struct device_attribute *attr,
++			      const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t on = simple_strtoul(buf, NULL, 16);
++	dwc_otg_set_prtpower(otg_dev->core_if, on);
++	return count;
++}
++
++DEVICE_ATTR(buspower, 0644, buspower_show, buspower_store);
++
++/**
++ * @todo Need to do more for suspend?
++ */
++/**
++ * Show the Bus Suspend status
++ */
++static ssize_t bussuspend_show(struct device *_dev,
++			       struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return sprintf(buf, "Bus Suspend = 0x%x\n",
++		       dwc_otg_get_prtsuspend(otg_dev->core_if));
++}
++
++/**
++ * Set the Bus Suspend status
++ */
++static ssize_t bussuspend_store(struct device *_dev,
++				struct device_attribute *attr,
++				const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t in = simple_strtoul(buf, NULL, 16);
++	dwc_otg_set_prtsuspend(otg_dev->core_if, in);
++	return count;
++}
++
++DEVICE_ATTR(bussuspend, 0644, bussuspend_show, bussuspend_store);
++
++/**
++ * Show the Mode Change Ready Timer status
++ */
++static ssize_t mode_ch_tim_en_show(struct device *_dev,
++				   struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return sprintf(buf, "Mode Change Ready Timer Enable = 0x%x\n",
++		       dwc_otg_get_mode_ch_tim(otg_dev->core_if));
++}
++
++/**
++ * Set the Mode Change Ready Timer status
++ */
++static ssize_t mode_ch_tim_en_store(struct device *_dev,
++				    struct device_attribute *attr,
++				    const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t in = simple_strtoul(buf, NULL, 16);
++	dwc_otg_set_mode_ch_tim(otg_dev->core_if, in);
++	return count;
++}
++
++DEVICE_ATTR(mode_ch_tim_en, 0644, mode_ch_tim_en_show, mode_ch_tim_en_store);
++
++/**
++ * Show the value of HFIR Frame Interval bitfield
++ */
++static ssize_t fr_interval_show(struct device *_dev,
++				struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return sprintf(buf, "Frame Interval = 0x%x\n",
++		       dwc_otg_get_fr_interval(otg_dev->core_if));
++}
++
++/**
++ * Set the HFIR Frame Interval value
++ */
++static ssize_t fr_interval_store(struct device *_dev,
++				 struct device_attribute *attr,
++				 const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t in = simple_strtoul(buf, NULL, 10);
++	dwc_otg_set_fr_interval(otg_dev->core_if, in);
++	return count;
++}
++
++DEVICE_ATTR(fr_interval, 0644, fr_interval_show, fr_interval_store);
++
++/**
++ * Show the status of Remote Wakeup.
++ */
++static ssize_t remote_wakeup_show(struct device *_dev,
++				  struct device_attribute *attr, char *buf)
++{
++#ifndef DWC_HOST_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++
++	return sprintf(buf,
++		       "Remote Wakeup Sig = %d Enabled = %d LPM Remote Wakeup = %d\n",
++		       dwc_otg_get_remotewakesig(otg_dev->core_if),
++		       dwc_otg_pcd_get_rmwkup_enable(otg_dev->pcd),
++		       dwc_otg_get_lpm_remotewakeenabled(otg_dev->core_if));
++#else
++	return sprintf(buf, "Host Only Mode!\n");
++#endif /* DWC_HOST_ONLY */
++}
++
++/**
++ * Initiate a remote wakeup of the host.  The Device control register
++ * Remote Wakeup Signal bit is written if the PCD Remote wakeup enable
++ * flag is set.
++ *
++ */
++static ssize_t remote_wakeup_store(struct device *_dev,
++				   struct device_attribute *attr,
++				   const char *buf, size_t count)
++{
++#ifndef DWC_HOST_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t val = simple_strtoul(buf, NULL, 16);
++
++	if (val & 1) {
++		dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 1);
++	} else {
++		dwc_otg_pcd_remote_wakeup(otg_dev->pcd, 0);
++	}
++#endif /* DWC_HOST_ONLY */
++	return count;
++}
++
++DEVICE_ATTR(remote_wakeup, S_IRUGO | S_IWUSR, remote_wakeup_show,
++	    remote_wakeup_store);
++
++/**
++ * Show the whether core is hibernated or not.
++ */
++static ssize_t rem_wakeup_pwrdn_show(struct device *_dev,
++				     struct device_attribute *attr, char *buf)
++{
++#ifndef DWC_HOST_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++
++	if (dwc_otg_get_core_state(otg_dev->core_if)) {
++		DWC_PRINTF("Core is in hibernation\n");
++	} else {
++		DWC_PRINTF("Core is not in hibernation\n");
++	}
++#endif /* DWC_HOST_ONLY */
++	return 0;
++}
++
++extern int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
++					      int rem_wakeup, int reset);
++
++/**
++ * Initiate a remote wakeup of the device to exit from hibernation.
++ */
++static ssize_t rem_wakeup_pwrdn_store(struct device *_dev,
++				      struct device_attribute *attr,
++				      const char *buf, size_t count)
++{
++#ifndef DWC_HOST_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	dwc_otg_device_hibernation_restore(otg_dev->core_if, 1, 0);
++#endif
++	return count;
++}
++
++DEVICE_ATTR(rem_wakeup_pwrdn, S_IRUGO | S_IWUSR, rem_wakeup_pwrdn_show,
++	    rem_wakeup_pwrdn_store);
++
++static ssize_t disconnect_us(struct device *_dev,
++			     struct device_attribute *attr,
++			     const char *buf, size_t count)
++{
++
++#ifndef DWC_HOST_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t val = simple_strtoul(buf, NULL, 16);
++	DWC_PRINTF("The Passed value is %04x\n", val);
++
++	dwc_otg_pcd_disconnect_us(otg_dev->pcd, 50);
++
++#endif /* DWC_HOST_ONLY */
++	return count;
++}
++
++DEVICE_ATTR(disconnect_us, S_IWUSR, 0, disconnect_us);
++
++/**
++ * Dump global registers and either host or device registers (depending on the
++ * current mode of the core).
++ */
++static ssize_t regdump_show(struct device *_dev,
++			    struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++
++	dwc_otg_dump_global_registers(otg_dev->core_if);
++	if (dwc_otg_is_host_mode(otg_dev->core_if)) {
++		dwc_otg_dump_host_registers(otg_dev->core_if);
++	} else {
++		dwc_otg_dump_dev_registers(otg_dev->core_if);
++
++	}
++	return sprintf(buf, "Register Dump\n");
++}
++
++DEVICE_ATTR(regdump, S_IRUGO, regdump_show, 0);
++
++/**
++ * Dump global registers and either host or device registers (depending on the
++ * current mode of the core).
++ */
++static ssize_t spramdump_show(struct device *_dev,
++			      struct device_attribute *attr, char *buf)
++{
++#if 0
++	dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++
++	dwc_otg_dump_spram(otg_dev->core_if);
++#endif
++
++	return sprintf(buf, "SPRAM Dump\n");
++}
++
++DEVICE_ATTR(spramdump, S_IRUGO, spramdump_show, 0);
++
++/**
++ * Dump the current hcd state.
++ */
++static ssize_t hcddump_show(struct device *_dev,
++			    struct device_attribute *attr, char *buf)
++{
++#ifndef DWC_DEVICE_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	dwc_otg_hcd_dump_state(otg_dev->hcd);
++#endif /* DWC_DEVICE_ONLY */
++	return sprintf(buf, "HCD Dump\n");
++}
++
++DEVICE_ATTR(hcddump, S_IRUGO, hcddump_show, 0);
++
++/**
++ * Dump the average frame remaining at SOF. This can be used to
++ * determine average interrupt latency. Frame remaining is also shown for
++ * start transfer and two additional sample points.
++ */
++static ssize_t hcd_frrem_show(struct device *_dev,
++			      struct device_attribute *attr, char *buf)
++{
++#ifndef DWC_DEVICE_ONLY
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++
++	dwc_otg_hcd_dump_frrem(otg_dev->hcd);
++#endif /* DWC_DEVICE_ONLY */
++	return sprintf(buf, "HCD Dump Frame Remaining\n");
++}
++
++DEVICE_ATTR(hcd_frrem, S_IRUGO, hcd_frrem_show, 0);
++
++/**
++ * Displays the time required to read the GNPTXFSIZ register many times (the
++ * output shows the number of times the register is read).
++ */
++#define RW_REG_COUNT 10000000
++#define MSEC_PER_JIFFIE 1000/HZ
++static ssize_t rd_reg_test_show(struct device *_dev,
++				struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	int i;
++	int time;
++	int start_jiffies;
++
++	printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
++	       HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
++	start_jiffies = jiffies;
++	for (i = 0; i < RW_REG_COUNT; i++) {
++		dwc_otg_get_gnptxfsiz(otg_dev->core_if);
++	}
++	time = jiffies - start_jiffies;
++	return sprintf(buf,
++		       "Time to read GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
++		       RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
++}
++
++DEVICE_ATTR(rd_reg_test, S_IRUGO, rd_reg_test_show, 0);
++
++/**
++ * Displays the time required to write the GNPTXFSIZ register many times (the
++ * output shows the number of times the register is written).
++ */
++static ssize_t wr_reg_test_show(struct device *_dev,
++				struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t reg_val;
++	int i;
++	int time;
++	int start_jiffies;
++
++	printk("HZ %d, MSEC_PER_JIFFIE %d, loops_per_jiffy %lu\n",
++	       HZ, MSEC_PER_JIFFIE, loops_per_jiffy);
++	reg_val = dwc_otg_get_gnptxfsiz(otg_dev->core_if);
++	start_jiffies = jiffies;
++	for (i = 0; i < RW_REG_COUNT; i++) {
++		dwc_otg_set_gnptxfsiz(otg_dev->core_if, reg_val);
++	}
++	time = jiffies - start_jiffies;
++	return sprintf(buf,
++		       "Time to write GNPTXFSIZ reg %d times: %d msecs (%d jiffies)\n",
++		       RW_REG_COUNT, time * MSEC_PER_JIFFIE, time);
++}
++
++DEVICE_ATTR(wr_reg_test, S_IRUGO, wr_reg_test_show, 0);
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++
++/**
++* Show the lpm_response attribute.
++*/
++static ssize_t lpmresp_show(struct device *_dev,
++			    struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++
++	if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if))
++		return sprintf(buf, "** LPM is DISABLED **\n");
++
++	if (!dwc_otg_is_device_mode(otg_dev->core_if)) {
++		return sprintf(buf, "** Current mode is not device mode\n");
++	}
++	return sprintf(buf, "lpm_response = %d\n",
++		       dwc_otg_get_lpmresponse(otg_dev->core_if));
++}
++
++/**
++* Store the lpm_response attribute.
++*/
++static ssize_t lpmresp_store(struct device *_dev,
++			     struct device_attribute *attr,
++			     const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	uint32_t val = simple_strtoul(buf, NULL, 16);
++
++	if (!dwc_otg_get_param_lpm_enable(otg_dev->core_if)) {
++		return 0;
++	}
++
++	if (!dwc_otg_is_device_mode(otg_dev->core_if)) {
++		return 0;
++	}
++
++	dwc_otg_set_lpmresponse(otg_dev->core_if, val);
++	return count;
++}
++
++DEVICE_ATTR(lpm_response, S_IRUGO | S_IWUSR, lpmresp_show, lpmresp_store);
++
++/**
++* Show the sleep_status attribute.
++*/
++static ssize_t sleepstatus_show(struct device *_dev,
++				struct device_attribute *attr, char *buf)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	return sprintf(buf, "Sleep Status = %d\n",
++		       dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if));
++}
++
++/**
++ * Store the sleep_status attribure.
++ */
++static ssize_t sleepstatus_store(struct device *_dev,
++				 struct device_attribute *attr,
++				 const char *buf, size_t count)
++{
++        dwc_otg_device_t *otg_dev = dwc_otg_drvdev(_dev);
++	dwc_otg_core_if_t *core_if = otg_dev->core_if;
++
++	if (dwc_otg_get_lpm_portsleepstatus(otg_dev->core_if)) {
++		if (dwc_otg_is_host_mode(core_if)) {
++
++			DWC_PRINTF("Host initiated resume\n");
++			dwc_otg_set_prtresume(otg_dev->core_if, 1);
++		}
++	}
++
++	return count;
++}
++
++DEVICE_ATTR(sleep_status, S_IRUGO | S_IWUSR, sleepstatus_show,
++	    sleepstatus_store);
++
++#endif /* CONFIG_USB_DWC_OTG_LPM_ENABLE */
++
++/**@}*/
++
++/**
++ * Create the device files
++ */
++void dwc_otg_attr_create(
++#ifdef LM_INTERFACE
++	struct lm_device *dev
++#elif  defined(PCI_INTERFACE)
++	struct pci_dev *dev
++#elif  defined(PLATFORM_INTERFACE)
++        struct platform_device *dev
++#endif
++    )
++{
++	int error;
++
++	error = device_create_file(&dev->dev, &dev_attr_regoffset);
++	error = device_create_file(&dev->dev, &dev_attr_regvalue);
++	error = device_create_file(&dev->dev, &dev_attr_mode);
++	error = device_create_file(&dev->dev, &dev_attr_hnpcapable);
++	error = device_create_file(&dev->dev, &dev_attr_srpcapable);
++	error = device_create_file(&dev->dev, &dev_attr_hsic_connect);
++	error = device_create_file(&dev->dev, &dev_attr_inv_sel_hsic);
++	error = device_create_file(&dev->dev, &dev_attr_hnp);
++	error = device_create_file(&dev->dev, &dev_attr_srp);
++	error = device_create_file(&dev->dev, &dev_attr_buspower);
++	error = device_create_file(&dev->dev, &dev_attr_bussuspend);
++	error = device_create_file(&dev->dev, &dev_attr_mode_ch_tim_en);
++	error = device_create_file(&dev->dev, &dev_attr_fr_interval);
++	error = device_create_file(&dev->dev, &dev_attr_busconnected);
++	error = device_create_file(&dev->dev, &dev_attr_gotgctl);
++	error = device_create_file(&dev->dev, &dev_attr_gusbcfg);
++	error = device_create_file(&dev->dev, &dev_attr_grxfsiz);
++	error = device_create_file(&dev->dev, &dev_attr_gnptxfsiz);
++	error = device_create_file(&dev->dev, &dev_attr_gpvndctl);
++	error = device_create_file(&dev->dev, &dev_attr_ggpio);
++	error = device_create_file(&dev->dev, &dev_attr_guid);
++	error = device_create_file(&dev->dev, &dev_attr_gsnpsid);
++	error = device_create_file(&dev->dev, &dev_attr_devspeed);
++	error = device_create_file(&dev->dev, &dev_attr_enumspeed);
++	error = device_create_file(&dev->dev, &dev_attr_hptxfsiz);
++	error = device_create_file(&dev->dev, &dev_attr_hprt0);
++	error = device_create_file(&dev->dev, &dev_attr_remote_wakeup);
++	error = device_create_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
++	error = device_create_file(&dev->dev, &dev_attr_disconnect_us);
++	error = device_create_file(&dev->dev, &dev_attr_regdump);
++	error = device_create_file(&dev->dev, &dev_attr_spramdump);
++	error = device_create_file(&dev->dev, &dev_attr_hcddump);
++	error = device_create_file(&dev->dev, &dev_attr_hcd_frrem);
++	error = device_create_file(&dev->dev, &dev_attr_rd_reg_test);
++	error = device_create_file(&dev->dev, &dev_attr_wr_reg_test);
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	error = device_create_file(&dev->dev, &dev_attr_lpm_response);
++	error = device_create_file(&dev->dev, &dev_attr_sleep_status);
++#endif
++}
++
++/**
++ * Remove the device files
++ */
++void dwc_otg_attr_remove(
++#ifdef LM_INTERFACE
++	struct lm_device *dev
++#elif  defined(PCI_INTERFACE)
++	struct pci_dev *dev
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *dev
++#endif
++    )
++{
++	device_remove_file(&dev->dev, &dev_attr_regoffset);
++	device_remove_file(&dev->dev, &dev_attr_regvalue);
++	device_remove_file(&dev->dev, &dev_attr_mode);
++	device_remove_file(&dev->dev, &dev_attr_hnpcapable);
++	device_remove_file(&dev->dev, &dev_attr_srpcapable);
++	device_remove_file(&dev->dev, &dev_attr_hsic_connect);
++	device_remove_file(&dev->dev, &dev_attr_inv_sel_hsic);
++	device_remove_file(&dev->dev, &dev_attr_hnp);
++	device_remove_file(&dev->dev, &dev_attr_srp);
++	device_remove_file(&dev->dev, &dev_attr_buspower);
++	device_remove_file(&dev->dev, &dev_attr_bussuspend);
++	device_remove_file(&dev->dev, &dev_attr_mode_ch_tim_en);
++	device_remove_file(&dev->dev, &dev_attr_fr_interval);
++	device_remove_file(&dev->dev, &dev_attr_busconnected);
++	device_remove_file(&dev->dev, &dev_attr_gotgctl);
++	device_remove_file(&dev->dev, &dev_attr_gusbcfg);
++	device_remove_file(&dev->dev, &dev_attr_grxfsiz);
++	device_remove_file(&dev->dev, &dev_attr_gnptxfsiz);
++	device_remove_file(&dev->dev, &dev_attr_gpvndctl);
++	device_remove_file(&dev->dev, &dev_attr_ggpio);
++	device_remove_file(&dev->dev, &dev_attr_guid);
++	device_remove_file(&dev->dev, &dev_attr_gsnpsid);
++	device_remove_file(&dev->dev, &dev_attr_devspeed);
++	device_remove_file(&dev->dev, &dev_attr_enumspeed);
++	device_remove_file(&dev->dev, &dev_attr_hptxfsiz);
++	device_remove_file(&dev->dev, &dev_attr_hprt0);
++	device_remove_file(&dev->dev, &dev_attr_remote_wakeup);
++	device_remove_file(&dev->dev, &dev_attr_rem_wakeup_pwrdn);
++	device_remove_file(&dev->dev, &dev_attr_disconnect_us);
++	device_remove_file(&dev->dev, &dev_attr_regdump);
++	device_remove_file(&dev->dev, &dev_attr_spramdump);
++	device_remove_file(&dev->dev, &dev_attr_hcddump);
++	device_remove_file(&dev->dev, &dev_attr_hcd_frrem);
++	device_remove_file(&dev->dev, &dev_attr_rd_reg_test);
++	device_remove_file(&dev->dev, &dev_attr_wr_reg_test);
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	device_remove_file(&dev->dev, &dev_attr_lpm_response);
++	device_remove_file(&dev->dev, &dev_attr_sleep_status);
++#endif
++}
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_attr.h
+@@ -0,0 +1,89 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_attr.h $
++ * $Revision: #13 $
++ * $Date: 2010/06/21 $
++ * $Change: 1532021 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#if !defined(__DWC_OTG_ATTR_H__)
++#define __DWC_OTG_ATTR_H__
++
++/** @file
++ * This file contains the interface to the Linux device attributes.
++ */
++extern struct device_attribute dev_attr_regoffset;
++extern struct device_attribute dev_attr_regvalue;
++
++extern struct device_attribute dev_attr_mode;
++extern struct device_attribute dev_attr_hnpcapable;
++extern struct device_attribute dev_attr_srpcapable;
++extern struct device_attribute dev_attr_hnp;
++extern struct device_attribute dev_attr_srp;
++extern struct device_attribute dev_attr_buspower;
++extern struct device_attribute dev_attr_bussuspend;
++extern struct device_attribute dev_attr_mode_ch_tim_en;
++extern struct device_attribute dev_attr_fr_interval;
++extern struct device_attribute dev_attr_busconnected;
++extern struct device_attribute dev_attr_gotgctl;
++extern struct device_attribute dev_attr_gusbcfg;
++extern struct device_attribute dev_attr_grxfsiz;
++extern struct device_attribute dev_attr_gnptxfsiz;
++extern struct device_attribute dev_attr_gpvndctl;
++extern struct device_attribute dev_attr_ggpio;
++extern struct device_attribute dev_attr_guid;
++extern struct device_attribute dev_attr_gsnpsid;
++extern struct device_attribute dev_attr_devspeed;
++extern struct device_attribute dev_attr_enumspeed;
++extern struct device_attribute dev_attr_hptxfsiz;
++extern struct device_attribute dev_attr_hprt0;
++#ifdef CONFIG_USB_DWC_OTG_LPM
++extern struct device_attribute dev_attr_lpm_response;
++extern struct device_attribute devi_attr_sleep_status;
++#endif
++
++void dwc_otg_attr_create(
++#ifdef LM_INTERFACE
++				struct lm_device *dev
++#elif  defined(PCI_INTERFACE)
++				struct pci_dev *dev
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *dev
++#endif
++    );
++
++void dwc_otg_attr_remove(
++#ifdef LM_INTERFACE
++				struct lm_device *dev
++#elif  defined(PCI_INTERFACE)
++				struct pci_dev *dev
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *dev
++#endif
++    );
++#endif
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_cfi.c
+@@ -0,0 +1,1876 @@
++/* ==========================================================================
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++/** @file
++ *
++ * This file contains the most of the CFI(Core Feature Interface)
++ * implementation for the OTG.
++ */
++
++#ifdef DWC_UTE_CFI
++
++#include "dwc_otg_pcd.h"
++#include "dwc_otg_cfi.h"
++
++/** This definition should actually migrate to the Portability Library */
++#define DWC_CONSTANT_CPU_TO_LE16(x) (x)
++
++extern dwc_otg_pcd_ep_t *get_ep_by_addr(dwc_otg_pcd_t * pcd, u16 wIndex);
++
++static int cfi_core_features_buf(uint8_t * buf, uint16_t buflen);
++static int cfi_get_feature_value(uint8_t * buf, uint16_t buflen,
++				 struct dwc_otg_pcd *pcd,
++				 struct cfi_usb_ctrlrequest *ctrl_req);
++static int cfi_set_feature_value(struct dwc_otg_pcd *pcd);
++static int cfi_ep_get_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
++			     struct cfi_usb_ctrlrequest *req);
++static int cfi_ep_get_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
++				 struct cfi_usb_ctrlrequest *req);
++static int cfi_ep_get_align_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
++				struct cfi_usb_ctrlrequest *req);
++static int cfi_preproc_reset(struct dwc_otg_pcd *pcd,
++			     struct cfi_usb_ctrlrequest *req);
++static void cfi_free_ep_bs_dyn_data(cfi_ep_t * cfiep);
++
++static uint16_t get_dfifo_size(dwc_otg_core_if_t * core_if);
++static int32_t get_rxfifo_size(dwc_otg_core_if_t * core_if, uint16_t wValue);
++static int32_t get_txfifo_size(struct dwc_otg_pcd *pcd, uint16_t wValue);
++
++static uint8_t resize_fifos(dwc_otg_core_if_t * core_if);
++
++/** This is the header of the all features descriptor */
++static cfi_all_features_header_t all_props_desc_header = {
++	.wVersion = DWC_CONSTANT_CPU_TO_LE16(0x100),
++	.wCoreID = DWC_CONSTANT_CPU_TO_LE16(CFI_CORE_ID_OTG),
++	.wNumFeatures = DWC_CONSTANT_CPU_TO_LE16(9),
++};
++
++/** This is an array of statically allocated feature descriptors */
++static cfi_feature_desc_header_t prop_descs[] = {
++
++	/* FT_ID_DMA_MODE */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_MODE),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(1),
++	 },
++
++	/* FT_ID_DMA_BUFFER_SETUP */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_BUFFER_SETUP),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
++	 },
++
++	/* FT_ID_DMA_BUFF_ALIGN */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_BUFF_ALIGN),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
++	 },
++
++	/* FT_ID_DMA_CONCAT_SETUP */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_CONCAT_SETUP),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 //.wDataLength  = DWC_CONSTANT_CPU_TO_LE16(6),
++	 },
++
++	/* FT_ID_DMA_CIRCULAR */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DMA_CIRCULAR),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
++	 },
++
++	/* FT_ID_THRESHOLD_SETUP */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_THRESHOLD_SETUP),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(6),
++	 },
++
++	/* FT_ID_DFIFO_DEPTH */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_DFIFO_DEPTH),
++	 .bmAttributes = CFI_FEATURE_ATTR_RO,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
++	 },
++
++	/* FT_ID_TX_FIFO_DEPTH */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_TX_FIFO_DEPTH),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
++	 },
++
++	/* FT_ID_RX_FIFO_DEPTH */
++	{
++	 .wFeatureID = DWC_CONSTANT_CPU_TO_LE16(FT_ID_RX_FIFO_DEPTH),
++	 .bmAttributes = CFI_FEATURE_ATTR_RW,
++	 .wDataLength = DWC_CONSTANT_CPU_TO_LE16(2),
++	 }
++};
++
++/** The table of feature names */
++cfi_string_t prop_name_table[] = {
++	{FT_ID_DMA_MODE, "dma_mode"},
++	{FT_ID_DMA_BUFFER_SETUP, "buffer_setup"},
++	{FT_ID_DMA_BUFF_ALIGN, "buffer_align"},
++	{FT_ID_DMA_CONCAT_SETUP, "concat_setup"},
++	{FT_ID_DMA_CIRCULAR, "buffer_circular"},
++	{FT_ID_THRESHOLD_SETUP, "threshold_setup"},
++	{FT_ID_DFIFO_DEPTH, "dfifo_depth"},
++	{FT_ID_TX_FIFO_DEPTH, "txfifo_depth"},
++	{FT_ID_RX_FIFO_DEPTH, "rxfifo_depth"},
++	{}
++};
++
++/************************************************************************/
++
++/**
++ * Returns the name of the feature by its ID
++ * or NULL if no featute ID matches.
++ *
++ */
++const uint8_t *get_prop_name(uint16_t prop_id, int *len)
++{
++	cfi_string_t *pstr;
++	*len = 0;
++
++	for (pstr = prop_name_table; pstr && pstr->s; pstr++) {
++		if (pstr->id == prop_id) {
++			*len = DWC_STRLEN(pstr->s);
++			return pstr->s;
++		}
++	}
++	return NULL;
++}
++
++/**
++ * This function handles all CFI specific control requests.
++ *
++ * Return a negative value to stall the DCE.
++ */
++int cfi_setup(struct dwc_otg_pcd *pcd, struct cfi_usb_ctrlrequest *ctrl)
++{
++	int retval = 0;
++	dwc_otg_pcd_ep_t *ep = NULL;
++	cfiobject_t *cfi = pcd->cfi;
++	struct dwc_otg_core_if *coreif = GET_CORE_IF(pcd);
++	uint16_t wLen = DWC_LE16_TO_CPU(&ctrl->wLength);
++	uint16_t wValue = DWC_LE16_TO_CPU(&ctrl->wValue);
++	uint16_t wIndex = DWC_LE16_TO_CPU(&ctrl->wIndex);
++	uint32_t regaddr = 0;
++	uint32_t regval = 0;
++
++	/* Save this Control Request in the CFI object.
++	 * The data field will be assigned in the data stage completion CB function.
++	 */
++	cfi->ctrl_req = *ctrl;
++	cfi->ctrl_req.data = NULL;
++
++	cfi->need_gadget_att = 0;
++	cfi->need_status_in_complete = 0;
++
++	switch (ctrl->bRequest) {
++	case VEN_CORE_GET_FEATURES:
++		retval = cfi_core_features_buf(cfi->buf_in.buf, CFI_IN_BUF_LEN);
++		if (retval >= 0) {
++			//dump_msg(cfi->buf_in.buf, retval);
++			ep = &pcd->ep0;
++
++			retval = min((uint16_t) retval, wLen);
++			/* Transfer this buffer to the host through the EP0-IN EP */
++			ep->dwc_ep.dma_addr = cfi->buf_in.addr;
++			ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
++			ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
++			ep->dwc_ep.xfer_len = retval;
++			ep->dwc_ep.xfer_count = 0;
++			ep->dwc_ep.sent_zlp = 0;
++			ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
++
++			pcd->ep0_pending = 1;
++			dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
++		}
++		retval = 0;
++		break;
++
++	case VEN_CORE_GET_FEATURE:
++		CFI_INFO("VEN_CORE_GET_FEATURE\n");
++		retval = cfi_get_feature_value(cfi->buf_in.buf, CFI_IN_BUF_LEN,
++					       pcd, ctrl);
++		if (retval >= 0) {
++			ep = &pcd->ep0;
++
++			retval = min((uint16_t) retval, wLen);
++			/* Transfer this buffer to the host through the EP0-IN EP */
++			ep->dwc_ep.dma_addr = cfi->buf_in.addr;
++			ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
++			ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
++			ep->dwc_ep.xfer_len = retval;
++			ep->dwc_ep.xfer_count = 0;
++			ep->dwc_ep.sent_zlp = 0;
++			ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
++
++			pcd->ep0_pending = 1;
++			dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
++		}
++		CFI_INFO("VEN_CORE_GET_FEATURE=%d\n", retval);
++		dump_msg(cfi->buf_in.buf, retval);
++		break;
++
++	case VEN_CORE_SET_FEATURE:
++		CFI_INFO("VEN_CORE_SET_FEATURE\n");
++		/* Set up an XFER to get the data stage of the control request,
++		 * which is the new value of the feature to be modified.
++		 */
++		ep = &pcd->ep0;
++		ep->dwc_ep.is_in = 0;
++		ep->dwc_ep.dma_addr = cfi->buf_out.addr;
++		ep->dwc_ep.start_xfer_buff = cfi->buf_out.buf;
++		ep->dwc_ep.xfer_buff = cfi->buf_out.buf;
++		ep->dwc_ep.xfer_len = wLen;
++		ep->dwc_ep.xfer_count = 0;
++		ep->dwc_ep.sent_zlp = 0;
++		ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
++
++		pcd->ep0_pending = 1;
++		/* Read the control write's data stage */
++		dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
++		retval = 0;
++		break;
++
++	case VEN_CORE_RESET_FEATURES:
++		CFI_INFO("VEN_CORE_RESET_FEATURES\n");
++		cfi->need_gadget_att = 1;
++		cfi->need_status_in_complete = 1;
++		retval = cfi_preproc_reset(pcd, ctrl);
++		CFI_INFO("VEN_CORE_RESET_FEATURES = (%d)\n", retval);
++		break;
++
++	case VEN_CORE_ACTIVATE_FEATURES:
++		CFI_INFO("VEN_CORE_ACTIVATE_FEATURES\n");
++		break;
++
++	case VEN_CORE_READ_REGISTER:
++		CFI_INFO("VEN_CORE_READ_REGISTER\n");
++		/* wValue optionally contains the HI WORD of the register offset and
++		 * wIndex contains the LOW WORD of the register offset
++		 */
++		if (wValue == 0) {
++			/* @TODO - MAS - fix the access to the base field */
++			regaddr = 0;
++			//regaddr = (uint32_t) pcd->otg_dev->os_dep.base;
++			//GET_CORE_IF(pcd)->co
++			regaddr |= wIndex;
++		} else {
++			regaddr = (wValue << 16) | wIndex;
++		}
++
++		/* Read a 32-bit value of the memory at the regaddr */
++		regval = DWC_READ_REG32((uint32_t *) regaddr);
++
++		ep = &pcd->ep0;
++		dwc_memcpy(cfi->buf_in.buf, &regval, sizeof(uint32_t));
++		ep->dwc_ep.is_in = 1;
++		ep->dwc_ep.dma_addr = cfi->buf_in.addr;
++		ep->dwc_ep.start_xfer_buff = cfi->buf_in.buf;
++		ep->dwc_ep.xfer_buff = cfi->buf_in.buf;
++		ep->dwc_ep.xfer_len = wLen;
++		ep->dwc_ep.xfer_count = 0;
++		ep->dwc_ep.sent_zlp = 0;
++		ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
++
++		pcd->ep0_pending = 1;
++		dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
++		cfi->need_gadget_att = 0;
++		retval = 0;
++		break;
++
++	case VEN_CORE_WRITE_REGISTER:
++		CFI_INFO("VEN_CORE_WRITE_REGISTER\n");
++		/* Set up an XFER to get the data stage of the control request,
++		 * which is the new value of the register to be modified.
++		 */
++		ep = &pcd->ep0;
++		ep->dwc_ep.is_in = 0;
++		ep->dwc_ep.dma_addr = cfi->buf_out.addr;
++		ep->dwc_ep.start_xfer_buff = cfi->buf_out.buf;
++		ep->dwc_ep.xfer_buff = cfi->buf_out.buf;
++		ep->dwc_ep.xfer_len = wLen;
++		ep->dwc_ep.xfer_count = 0;
++		ep->dwc_ep.sent_zlp = 0;
++		ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
++
++		pcd->ep0_pending = 1;
++		/* Read the control write's data stage */
++		dwc_otg_ep0_start_transfer(coreif, &ep->dwc_ep);
++		retval = 0;
++		break;
++
++	default:
++		retval = -DWC_E_NOT_SUPPORTED;
++		break;
++	}
++
++	return retval;
++}
++
++/**
++ * This function prepares the core features descriptors and copies its
++ * raw representation into the buffer <buf>.
++ *
++ * The buffer structure is as follows:
++ *	all_features_header (8 bytes)
++ *	features_#1 (8 bytes + feature name string length)
++ *	features_#2 (8 bytes + feature name string length)
++ *	.....
++ *	features_#n - where n=the total count of feature descriptors
++ */
++static int cfi_core_features_buf(uint8_t * buf, uint16_t buflen)
++{
++	cfi_feature_desc_header_t *prop_hdr = prop_descs;
++	cfi_feature_desc_header_t *prop;
++	cfi_all_features_header_t *all_props_hdr = &all_props_desc_header;
++	cfi_all_features_header_t *tmp;
++	uint8_t *tmpbuf = buf;
++	const uint8_t *pname = NULL;
++	int i, j, namelen = 0, totlen;
++
++	/* Prepare and copy the core features into the buffer */
++	CFI_INFO("%s:\n", __func__);
++
++	tmp = (cfi_all_features_header_t *) tmpbuf;
++	*tmp = *all_props_hdr;
++	tmpbuf += CFI_ALL_FEATURES_HDR_LEN;
++
++	j = sizeof(prop_descs) / sizeof(cfi_all_features_header_t);
++	for (i = 0; i < j; i++, prop_hdr++) {
++		pname = get_prop_name(prop_hdr->wFeatureID, &namelen);
++		prop = (cfi_feature_desc_header_t *) tmpbuf;
++		*prop = *prop_hdr;
++
++		prop->bNameLen = namelen;
++		prop->wLength =
++		    DWC_CONSTANT_CPU_TO_LE16(CFI_FEATURE_DESC_HDR_LEN +
++					     namelen);
++
++		tmpbuf += CFI_FEATURE_DESC_HDR_LEN;
++		dwc_memcpy(tmpbuf, pname, namelen);
++		tmpbuf += namelen;
++	}
++
++	totlen = tmpbuf - buf;
++
++	if (totlen > 0) {
++		tmp = (cfi_all_features_header_t *) buf;
++		tmp->wTotalLen = DWC_CONSTANT_CPU_TO_LE16(totlen);
++	}
++
++	return totlen;
++}
++
++/**
++ * This function releases all the dynamic memory in the CFI object.
++ */
++static void cfi_release(cfiobject_t * cfiobj)
++{
++	cfi_ep_t *cfiep;
++	dwc_list_link_t *tmp;
++
++	CFI_INFO("%s\n", __func__);
++
++	if (cfiobj->buf_in.buf) {
++		DWC_DMA_FREE(CFI_IN_BUF_LEN, cfiobj->buf_in.buf,
++			     cfiobj->buf_in.addr);
++		cfiobj->buf_in.buf = NULL;
++	}
++
++	if (cfiobj->buf_out.buf) {
++		DWC_DMA_FREE(CFI_OUT_BUF_LEN, cfiobj->buf_out.buf,
++			     cfiobj->buf_out.addr);
++		cfiobj->buf_out.buf = NULL;
++	}
++
++	/* Free the Buffer Setup values for each EP */
++	//list_for_each_entry(cfiep, &cfiobj->active_eps, lh) {
++	DWC_LIST_FOREACH(tmp, &cfiobj->active_eps) {
++		cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
++		cfi_free_ep_bs_dyn_data(cfiep);
++	}
++}
++
++/**
++ * This function frees the dynamically allocated EP buffer setup data.
++ */
++static void cfi_free_ep_bs_dyn_data(cfi_ep_t * cfiep)
++{
++	if (cfiep->bm_sg) {
++		DWC_FREE(cfiep->bm_sg);
++		cfiep->bm_sg = NULL;
++	}
++
++	if (cfiep->bm_align) {
++		DWC_FREE(cfiep->bm_align);
++		cfiep->bm_align = NULL;
++	}
++
++	if (cfiep->bm_concat) {
++		if (NULL != cfiep->bm_concat->wTxBytes) {
++			DWC_FREE(cfiep->bm_concat->wTxBytes);
++			cfiep->bm_concat->wTxBytes = NULL;
++		}
++		DWC_FREE(cfiep->bm_concat);
++		cfiep->bm_concat = NULL;
++	}
++}
++
++/**
++ * This function initializes the default values of the features
++ * for a specific endpoint and should be called only once when
++ * the EP is enabled first time.
++ */
++static int cfi_ep_init_defaults(struct dwc_otg_pcd *pcd, cfi_ep_t * cfiep)
++{
++	int retval = 0;
++
++	cfiep->bm_sg = DWC_ALLOC(sizeof(ddma_sg_buffer_setup_t));
++	if (NULL == cfiep->bm_sg) {
++		CFI_INFO("Failed to allocate memory for SG feature value\n");
++		return -DWC_E_NO_MEMORY;
++	}
++	dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
++
++	/* For the Concatenation feature's default value we do not allocate
++	 * memory for the wTxBytes field - it will be done in the set_feature_value
++	 * request handler.
++	 */
++	cfiep->bm_concat = DWC_ALLOC(sizeof(ddma_concat_buffer_setup_t));
++	if (NULL == cfiep->bm_concat) {
++		CFI_INFO
++		    ("Failed to allocate memory for CONCATENATION feature value\n");
++		DWC_FREE(cfiep->bm_sg);
++		return -DWC_E_NO_MEMORY;
++	}
++	dwc_memset(cfiep->bm_concat, 0, sizeof(ddma_concat_buffer_setup_t));
++
++	cfiep->bm_align = DWC_ALLOC(sizeof(ddma_align_buffer_setup_t));
++	if (NULL == cfiep->bm_align) {
++		CFI_INFO
++		    ("Failed to allocate memory for Alignment feature value\n");
++		DWC_FREE(cfiep->bm_sg);
++		DWC_FREE(cfiep->bm_concat);
++		return -DWC_E_NO_MEMORY;
++	}
++	dwc_memset(cfiep->bm_align, 0, sizeof(ddma_align_buffer_setup_t));
++
++	return retval;
++}
++
++/**
++ * The callback function that notifies the CFI on the activation of
++ * an endpoint in the PCD. The following steps are done in this function:
++ *
++ *	Create a dynamically allocated cfi_ep_t object (a CFI wrapper to the PCD's
++ *		active endpoint)
++ *	Create MAX_DMA_DESCS_PER_EP count DMA Descriptors for the EP
++ *	Set the Buffer Mode to standard
++ *	Initialize the default values for all EP modes (SG, Circular, Concat, Align)
++ *	Add the cfi_ep_t object to the list of active endpoints in the CFI object
++ */
++static int cfi_ep_enable(struct cfiobject *cfi, struct dwc_otg_pcd *pcd,
++			 struct dwc_otg_pcd_ep *ep)
++{
++	cfi_ep_t *cfiep;
++	int retval = -DWC_E_NOT_SUPPORTED;
++
++	CFI_INFO("%s: epname=%s; epnum=0x%02x\n", __func__,
++		 "EP_" /*ep->ep.name */ , ep->desc->bEndpointAddress);
++	/* MAS - Check whether this endpoint already is in the list */
++	cfiep = get_cfi_ep_by_pcd_ep(cfi, ep);
++
++	if (NULL == cfiep) {
++		/* Allocate a cfi_ep_t object */
++		cfiep = DWC_ALLOC(sizeof(cfi_ep_t));
++		if (NULL == cfiep) {
++			CFI_INFO
++			    ("Unable to allocate memory for <cfiep> in function %s\n",
++			     __func__);
++			return -DWC_E_NO_MEMORY;
++		}
++		dwc_memset(cfiep, 0, sizeof(cfi_ep_t));
++
++		/* Save the dwc_otg_pcd_ep pointer in the cfiep object */
++		cfiep->ep = ep;
++
++		/* Allocate the DMA Descriptors chain of MAX_DMA_DESCS_PER_EP count */
++		ep->dwc_ep.descs =
++		    DWC_DMA_ALLOC(MAX_DMA_DESCS_PER_EP *
++				  sizeof(dwc_otg_dma_desc_t),
++				  &ep->dwc_ep.descs_dma_addr);
++
++		if (NULL == ep->dwc_ep.descs) {
++			DWC_FREE(cfiep);
++			return -DWC_E_NO_MEMORY;
++		}
++
++		DWC_LIST_INIT(&cfiep->lh);
++
++		/* Set the buffer mode to BM_STANDARD. It will be modified
++		 * when building descriptors for a specific buffer mode */
++		ep->dwc_ep.buff_mode = BM_STANDARD;
++
++		/* Create and initialize the default values for this EP's Buffer modes */
++		if ((retval = cfi_ep_init_defaults(pcd, cfiep)) < 0)
++			return retval;
++
++		/* Add the cfi_ep_t object to the CFI object's list of active endpoints */
++		DWC_LIST_INSERT_TAIL(&cfi->active_eps, &cfiep->lh);
++		retval = 0;
++	} else {		/* The sought EP already is in the list */
++		CFI_INFO("%s: The sought EP already is in the list\n",
++			 __func__);
++	}
++
++	return retval;
++}
++
++/**
++ * This function is called when the data stage of a 3-stage Control Write request
++ * is complete.
++ *
++ */
++static int cfi_ctrl_write_complete(struct cfiobject *cfi,
++				   struct dwc_otg_pcd *pcd)
++{
++	uint32_t addr, reg_value;
++	uint16_t wIndex, wValue;
++	uint8_t bRequest;
++	uint8_t *buf = cfi->buf_out.buf;
++	//struct usb_ctrlrequest *ctrl_req = &cfi->ctrl_req_saved;
++	struct cfi_usb_ctrlrequest *ctrl_req = &cfi->ctrl_req;
++	int retval = -DWC_E_NOT_SUPPORTED;
++
++	CFI_INFO("%s\n", __func__);
++
++	bRequest = ctrl_req->bRequest;
++	wIndex = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wIndex);
++	wValue = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wValue);
++
++	/*
++	 * Save the pointer to the data stage in the ctrl_req's <data> field.
++	 * The request should be already saved in the command stage by now.
++	 */
++	ctrl_req->data = cfi->buf_out.buf;
++	cfi->need_status_in_complete = 0;
++	cfi->need_gadget_att = 0;
++
++	switch (bRequest) {
++	case VEN_CORE_WRITE_REGISTER:
++		/* The buffer contains raw data of the new value for the register */
++		reg_value = *((uint32_t *) buf);
++		if (wValue == 0) {
++			addr = 0;
++			//addr = (uint32_t) pcd->otg_dev->os_dep.base;
++			addr += wIndex;
++		} else {
++			addr = (wValue << 16) | wIndex;
++		}
++
++		//writel(reg_value, addr);
++
++		retval = 0;
++		cfi->need_status_in_complete = 1;
++		break;
++
++	case VEN_CORE_SET_FEATURE:
++		/* The buffer contains raw data of the new value of the feature */
++		retval = cfi_set_feature_value(pcd);
++		if (retval < 0)
++			return retval;
++
++		cfi->need_status_in_complete = 1;
++		break;
++
++	default:
++		break;
++	}
++
++	return retval;
++}
++
++/**
++ * This function builds the DMA descriptors for the SG buffer mode.
++ */
++static void cfi_build_sg_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
++			       dwc_otg_pcd_request_t * req)
++{
++	struct dwc_otg_pcd_ep *ep = cfiep->ep;
++	ddma_sg_buffer_setup_t *sgval = cfiep->bm_sg;
++	struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
++	struct dwc_otg_dma_desc *desc_last = cfiep->ep->dwc_ep.descs;
++	dma_addr_t buff_addr = req->dma;
++	int i;
++	uint32_t txsize, off;
++
++	txsize = sgval->wSize;
++	off = sgval->bOffset;
++
++//      CFI_INFO("%s: %s TXSIZE=0x%08x; OFFSET=0x%08x\n",
++//              __func__, cfiep->ep->ep.name, txsize, off);
++
++	for (i = 0; i < sgval->bCount; i++) {
++		desc->status.b.bs = BS_HOST_BUSY;
++		desc->buf = buff_addr;
++		desc->status.b.l = 0;
++		desc->status.b.ioc = 0;
++		desc->status.b.sp = 0;
++		desc->status.b.bytes = txsize;
++		desc->status.b.bs = BS_HOST_READY;
++
++		/* Set the next address of the buffer */
++		buff_addr += txsize + off;
++		desc_last = desc;
++		desc++;
++	}
++
++	/* Set the last, ioc and sp bits on the Last DMA Descriptor */
++	desc_last->status.b.l = 1;
++	desc_last->status.b.ioc = 1;
++	desc_last->status.b.sp = ep->dwc_ep.sent_zlp;
++	/* Save the last DMA descriptor pointer */
++	cfiep->dma_desc_last = desc_last;
++	cfiep->desc_count = sgval->bCount;
++}
++
++/**
++ * This function builds the DMA descriptors for the Concatenation buffer mode.
++ */
++static void cfi_build_concat_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
++				   dwc_otg_pcd_request_t * req)
++{
++	struct dwc_otg_pcd_ep *ep = cfiep->ep;
++	ddma_concat_buffer_setup_t *concatval = cfiep->bm_concat;
++	struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
++	struct dwc_otg_dma_desc *desc_last = cfiep->ep->dwc_ep.descs;
++	dma_addr_t buff_addr = req->dma;
++	int i;
++	uint16_t *txsize;
++
++	txsize = concatval->wTxBytes;
++
++	for (i = 0; i < concatval->hdr.bDescCount; i++) {
++		desc->buf = buff_addr;
++		desc->status.b.bs = BS_HOST_BUSY;
++		desc->status.b.l = 0;
++		desc->status.b.ioc = 0;
++		desc->status.b.sp = 0;
++		desc->status.b.bytes = *txsize;
++		desc->status.b.bs = BS_HOST_READY;
++
++		txsize++;
++		/* Set the next address of the buffer */
++		buff_addr += UGETW(ep->desc->wMaxPacketSize);
++		desc_last = desc;
++		desc++;
++	}
++
++	/* Set the last, ioc and sp bits on the Last DMA Descriptor */
++	desc_last->status.b.l = 1;
++	desc_last->status.b.ioc = 1;
++	desc_last->status.b.sp = ep->dwc_ep.sent_zlp;
++	cfiep->dma_desc_last = desc_last;
++	cfiep->desc_count = concatval->hdr.bDescCount;
++}
++
++/**
++ * This function builds the DMA descriptors for the Circular buffer mode
++ */
++static void cfi_build_circ_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
++				 dwc_otg_pcd_request_t * req)
++{
++	/* @todo: MAS - add implementation when this feature needs to be tested */
++}
++
++/**
++ * This function builds the DMA descriptors for the Alignment buffer mode
++ */
++static void cfi_build_align_descs(struct cfiobject *cfi, cfi_ep_t * cfiep,
++				  dwc_otg_pcd_request_t * req)
++{
++	struct dwc_otg_pcd_ep *ep = cfiep->ep;
++	ddma_align_buffer_setup_t *alignval = cfiep->bm_align;
++	struct dwc_otg_dma_desc *desc = cfiep->ep->dwc_ep.descs;
++	dma_addr_t buff_addr = req->dma;
++
++	desc->status.b.bs = BS_HOST_BUSY;
++	desc->status.b.l = 1;
++	desc->status.b.ioc = 1;
++	desc->status.b.sp = ep->dwc_ep.sent_zlp;
++	desc->status.b.bytes = req->length;
++	/* Adjust the buffer alignment */
++	desc->buf = (buff_addr + alignval->bAlign);
++	desc->status.b.bs = BS_HOST_READY;
++	cfiep->dma_desc_last = desc;
++	cfiep->desc_count = 1;
++}
++
++/**
++ * This function builds the DMA descriptors chain for different modes of the
++ * buffer setup of an endpoint.
++ */
++static void cfi_build_descriptors(struct cfiobject *cfi,
++				  struct dwc_otg_pcd *pcd,
++				  struct dwc_otg_pcd_ep *ep,
++				  dwc_otg_pcd_request_t * req)
++{
++	cfi_ep_t *cfiep;
++
++	/* Get the cfiep by the dwc_otg_pcd_ep */
++	cfiep = get_cfi_ep_by_pcd_ep(cfi, ep);
++	if (NULL == cfiep) {
++		CFI_INFO("%s: Unable to find a matching active endpoint\n",
++			 __func__);
++		return;
++	}
++
++	cfiep->xfer_len = req->length;
++
++	/* Iterate through all the DMA descriptors */
++	switch (cfiep->ep->dwc_ep.buff_mode) {
++	case BM_SG:
++		cfi_build_sg_descs(cfi, cfiep, req);
++		break;
++
++	case BM_CONCAT:
++		cfi_build_concat_descs(cfi, cfiep, req);
++		break;
++
++	case BM_CIRCULAR:
++		cfi_build_circ_descs(cfi, cfiep, req);
++		break;
++
++	case BM_ALIGN:
++		cfi_build_align_descs(cfi, cfiep, req);
++		break;
++
++	default:
++		break;
++	}
++}
++
++/**
++ * Allocate DMA buffer for different Buffer modes.
++ */
++static void *cfi_ep_alloc_buf(struct cfiobject *cfi, struct dwc_otg_pcd *pcd,
++			      struct dwc_otg_pcd_ep *ep, dma_addr_t * dma,
++			      unsigned size, gfp_t flags)
++{
++	return DWC_DMA_ALLOC(size, dma);
++}
++
++/**
++ * This function initializes the CFI object.
++ */
++int init_cfi(cfiobject_t * cfiobj)
++{
++	CFI_INFO("%s\n", __func__);
++
++	/* Allocate a buffer for IN XFERs */
++	cfiobj->buf_in.buf =
++	    DWC_DMA_ALLOC(CFI_IN_BUF_LEN, &cfiobj->buf_in.addr);
++	if (NULL == cfiobj->buf_in.buf) {
++		CFI_INFO("Unable to allocate buffer for INs\n");
++		return -DWC_E_NO_MEMORY;
++	}
++
++	/* Allocate a buffer for OUT XFERs */
++	cfiobj->buf_out.buf =
++	    DWC_DMA_ALLOC(CFI_OUT_BUF_LEN, &cfiobj->buf_out.addr);
++	if (NULL == cfiobj->buf_out.buf) {
++		CFI_INFO("Unable to allocate buffer for OUT\n");
++		return -DWC_E_NO_MEMORY;
++	}
++
++	/* Initialize the callback function pointers */
++	cfiobj->ops.release = cfi_release;
++	cfiobj->ops.ep_enable = cfi_ep_enable;
++	cfiobj->ops.ctrl_write_complete = cfi_ctrl_write_complete;
++	cfiobj->ops.build_descriptors = cfi_build_descriptors;
++	cfiobj->ops.ep_alloc_buf = cfi_ep_alloc_buf;
++
++	/* Initialize the list of active endpoints in the CFI object */
++	DWC_LIST_INIT(&cfiobj->active_eps);
++
++	return 0;
++}
++
++/**
++ * This function reads the required feature's current value into the buffer
++ *
++ * @retval: Returns negative as error, or the data length of the feature
++ */
++static int cfi_get_feature_value(uint8_t * buf, uint16_t buflen,
++				 struct dwc_otg_pcd *pcd,
++				 struct cfi_usb_ctrlrequest *ctrl_req)
++{
++	int retval = -DWC_E_NOT_SUPPORTED;
++	struct dwc_otg_core_if *coreif = GET_CORE_IF(pcd);
++	uint16_t dfifo, rxfifo, txfifo;
++
++	switch (ctrl_req->wIndex) {
++		/* Whether the DDMA is enabled or not */
++	case FT_ID_DMA_MODE:
++		*buf = (coreif->dma_enable && coreif->dma_desc_enable) ? 1 : 0;
++		retval = 1;
++		break;
++
++	case FT_ID_DMA_BUFFER_SETUP:
++		retval = cfi_ep_get_sg_val(buf, pcd, ctrl_req);
++		break;
++
++	case FT_ID_DMA_BUFF_ALIGN:
++		retval = cfi_ep_get_align_val(buf, pcd, ctrl_req);
++		break;
++
++	case FT_ID_DMA_CONCAT_SETUP:
++		retval = cfi_ep_get_concat_val(buf, pcd, ctrl_req);
++		break;
++
++	case FT_ID_DMA_CIRCULAR:
++		CFI_INFO("GetFeature value (FT_ID_DMA_CIRCULAR)\n");
++		break;
++
++	case FT_ID_THRESHOLD_SETUP:
++		CFI_INFO("GetFeature value (FT_ID_THRESHOLD_SETUP)\n");
++		break;
++
++	case FT_ID_DFIFO_DEPTH:
++		dfifo = get_dfifo_size(coreif);
++		*((uint16_t *) buf) = dfifo;
++		retval = sizeof(uint16_t);
++		break;
++
++	case FT_ID_TX_FIFO_DEPTH:
++		retval = get_txfifo_size(pcd, ctrl_req->wValue);
++		if (retval >= 0) {
++			txfifo = retval;
++			*((uint16_t *) buf) = txfifo;
++			retval = sizeof(uint16_t);
++		}
++		break;
++
++	case FT_ID_RX_FIFO_DEPTH:
++		retval = get_rxfifo_size(coreif, ctrl_req->wValue);
++		if (retval >= 0) {
++			rxfifo = retval;
++			*((uint16_t *) buf) = rxfifo;
++			retval = sizeof(uint16_t);
++		}
++		break;
++	}
++
++	return retval;
++}
++
++/**
++ * This function resets the SG for the specified EP to its default value
++ */
++static int cfi_reset_sg_val(cfi_ep_t * cfiep)
++{
++	dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
++	return 0;
++}
++
++/**
++ * This function resets the Alignment for the specified EP to its default value
++ */
++static int cfi_reset_align_val(cfi_ep_t * cfiep)
++{
++	dwc_memset(cfiep->bm_sg, 0, sizeof(ddma_sg_buffer_setup_t));
++	return 0;
++}
++
++/**
++ * This function resets the Concatenation for the specified EP to its default value
++ * This function will also set the value of the wTxBytes field to NULL after
++ * freeing the memory previously allocated for this field.
++ */
++static int cfi_reset_concat_val(cfi_ep_t * cfiep)
++{
++	/* First we need to free the wTxBytes field */
++	if (cfiep->bm_concat->wTxBytes) {
++		DWC_FREE(cfiep->bm_concat->wTxBytes);
++		cfiep->bm_concat->wTxBytes = NULL;
++	}
++
++	dwc_memset(cfiep->bm_concat, 0, sizeof(ddma_concat_buffer_setup_t));
++	return 0;
++}
++
++/**
++ * This function resets all the buffer setups of the specified endpoint
++ */
++static int cfi_ep_reset_all_setup_vals(cfi_ep_t * cfiep)
++{
++	cfi_reset_sg_val(cfiep);
++	cfi_reset_align_val(cfiep);
++	cfi_reset_concat_val(cfiep);
++	return 0;
++}
++
++static int cfi_handle_reset_fifo_val(struct dwc_otg_pcd *pcd, uint8_t ep_addr,
++				     uint8_t rx_rst, uint8_t tx_rst)
++{
++	int retval = -DWC_E_INVALID;
++	uint16_t tx_siz[15];
++	uint16_t rx_siz = 0;
++	dwc_otg_pcd_ep_t *ep = NULL;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
++
++	if (rx_rst) {
++		rx_siz = params->dev_rx_fifo_size;
++		params->dev_rx_fifo_size = GET_CORE_IF(pcd)->init_rxfsiz;
++	}
++
++	if (tx_rst) {
++		if (ep_addr == 0) {
++			int i;
++
++			for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++				tx_siz[i] =
++				    core_if->core_params->dev_tx_fifo_size[i];
++				core_if->core_params->dev_tx_fifo_size[i] =
++				    core_if->init_txfsiz[i];
++			}
++		} else {
++
++			ep = get_ep_by_addr(pcd, ep_addr);
++
++			if (NULL == ep) {
++				CFI_INFO
++				    ("%s: Unable to get the endpoint addr=0x%02x\n",
++				     __func__, ep_addr);
++				return -DWC_E_INVALID;
++			}
++
++			tx_siz[0] =
++			    params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num -
++						     1];
++			params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] =
++			    GET_CORE_IF(pcd)->init_txfsiz[ep->
++							  dwc_ep.tx_fifo_num -
++							  1];
++		}
++	}
++
++	if (resize_fifos(GET_CORE_IF(pcd))) {
++		retval = 0;
++	} else {
++		CFI_INFO
++		    ("%s: Error resetting the feature Reset All(FIFO size)\n",
++		     __func__);
++		if (rx_rst) {
++			params->dev_rx_fifo_size = rx_siz;
++		}
++
++		if (tx_rst) {
++			if (ep_addr == 0) {
++				int i;
++				for (i = 0; i < core_if->hwcfg4.b.num_in_eps;
++				     i++) {
++					core_if->
++					    core_params->dev_tx_fifo_size[i] =
++					    tx_siz[i];
++				}
++			} else {
++				params->dev_tx_fifo_size[ep->
++							 dwc_ep.tx_fifo_num -
++							 1] = tx_siz[0];
++			}
++		}
++		retval = -DWC_E_INVALID;
++	}
++	return retval;
++}
++
++static int cfi_handle_reset_all(struct dwc_otg_pcd *pcd, uint8_t addr)
++{
++	int retval = 0;
++	cfi_ep_t *cfiep;
++	cfiobject_t *cfi = pcd->cfi;
++	dwc_list_link_t *tmp;
++
++	retval = cfi_handle_reset_fifo_val(pcd, addr, 1, 1);
++	if (retval < 0) {
++		return retval;
++	}
++
++	/* If the EP address is known then reset the features for only that EP */
++	if (addr) {
++		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
++		if (NULL == cfiep) {
++			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
++				 __func__, addr);
++			return -DWC_E_INVALID;
++		}
++		retval = cfi_ep_reset_all_setup_vals(cfiep);
++		cfiep->ep->dwc_ep.buff_mode = BM_STANDARD;
++	}
++	/* Otherwise (wValue == 0), reset all features of all EP's */
++	else {
++		/* Traverse all the active EP's and reset the feature(s) value(s) */
++		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
++		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
++			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
++			retval = cfi_ep_reset_all_setup_vals(cfiep);
++			cfiep->ep->dwc_ep.buff_mode = BM_STANDARD;
++			if (retval < 0) {
++				CFI_INFO
++				    ("%s: Error resetting the feature Reset All\n",
++				     __func__);
++				return retval;
++			}
++		}
++	}
++	return retval;
++}
++
++static int cfi_handle_reset_dma_buff_setup(struct dwc_otg_pcd *pcd,
++					   uint8_t addr)
++{
++	int retval = 0;
++	cfi_ep_t *cfiep;
++	cfiobject_t *cfi = pcd->cfi;
++	dwc_list_link_t *tmp;
++
++	/* If the EP address is known then reset the features for only that EP */
++	if (addr) {
++		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
++		if (NULL == cfiep) {
++			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
++				 __func__, addr);
++			return -DWC_E_INVALID;
++		}
++		retval = cfi_reset_sg_val(cfiep);
++	}
++	/* Otherwise (wValue == 0), reset all features of all EP's */
++	else {
++		/* Traverse all the active EP's and reset the feature(s) value(s) */
++		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
++		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
++			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
++			retval = cfi_reset_sg_val(cfiep);
++			if (retval < 0) {
++				CFI_INFO
++				    ("%s: Error resetting the feature Buffer Setup\n",
++				     __func__);
++				return retval;
++			}
++		}
++	}
++	return retval;
++}
++
++static int cfi_handle_reset_concat_val(struct dwc_otg_pcd *pcd, uint8_t addr)
++{
++	int retval = 0;
++	cfi_ep_t *cfiep;
++	cfiobject_t *cfi = pcd->cfi;
++	dwc_list_link_t *tmp;
++
++	/* If the EP address is known then reset the features for only that EP */
++	if (addr) {
++		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
++		if (NULL == cfiep) {
++			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
++				 __func__, addr);
++			return -DWC_E_INVALID;
++		}
++		retval = cfi_reset_concat_val(cfiep);
++	}
++	/* Otherwise (wValue == 0), reset all features of all EP's */
++	else {
++		/* Traverse all the active EP's and reset the feature(s) value(s) */
++		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
++		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
++			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
++			retval = cfi_reset_concat_val(cfiep);
++			if (retval < 0) {
++				CFI_INFO
++				    ("%s: Error resetting the feature Concatenation Value\n",
++				     __func__);
++				return retval;
++			}
++		}
++	}
++	return retval;
++}
++
++static int cfi_handle_reset_align_val(struct dwc_otg_pcd *pcd, uint8_t addr)
++{
++	int retval = 0;
++	cfi_ep_t *cfiep;
++	cfiobject_t *cfi = pcd->cfi;
++	dwc_list_link_t *tmp;
++
++	/* If the EP address is known then reset the features for only that EP */
++	if (addr) {
++		cfiep = get_cfi_ep_by_addr(pcd->cfi, addr);
++		if (NULL == cfiep) {
++			CFI_INFO("%s: Error getting the EP address 0x%02x\n",
++				 __func__, addr);
++			return -DWC_E_INVALID;
++		}
++		retval = cfi_reset_align_val(cfiep);
++	}
++	/* Otherwise (wValue == 0), reset all features of all EP's */
++	else {
++		/* Traverse all the active EP's and reset the feature(s) value(s) */
++		//list_for_each_entry(cfiep, &cfi->active_eps, lh) {
++		DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
++			cfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
++			retval = cfi_reset_align_val(cfiep);
++			if (retval < 0) {
++				CFI_INFO
++				    ("%s: Error resetting the feature Aliignment Value\n",
++				     __func__);
++				return retval;
++			}
++		}
++	}
++	return retval;
++
++}
++
++static int cfi_preproc_reset(struct dwc_otg_pcd *pcd,
++			     struct cfi_usb_ctrlrequest *req)
++{
++	int retval = 0;
++
++	switch (req->wIndex) {
++	case 0:
++		/* Reset all features */
++		retval = cfi_handle_reset_all(pcd, req->wValue & 0xff);
++		break;
++
++	case FT_ID_DMA_BUFFER_SETUP:
++		/* Reset the SG buffer setup */
++		retval =
++		    cfi_handle_reset_dma_buff_setup(pcd, req->wValue & 0xff);
++		break;
++
++	case FT_ID_DMA_CONCAT_SETUP:
++		/* Reset the Concatenation buffer setup */
++		retval = cfi_handle_reset_concat_val(pcd, req->wValue & 0xff);
++		break;
++
++	case FT_ID_DMA_BUFF_ALIGN:
++		/* Reset the Alignment buffer setup */
++		retval = cfi_handle_reset_align_val(pcd, req->wValue & 0xff);
++		break;
++
++	case FT_ID_TX_FIFO_DEPTH:
++		retval =
++		    cfi_handle_reset_fifo_val(pcd, req->wValue & 0xff, 0, 1);
++		pcd->cfi->need_gadget_att = 0;
++		break;
++
++	case FT_ID_RX_FIFO_DEPTH:
++		retval = cfi_handle_reset_fifo_val(pcd, 0, 1, 0);
++		pcd->cfi->need_gadget_att = 0;
++		break;
++	default:
++		break;
++	}
++	return retval;
++}
++
++/**
++ * This function sets a new value for the SG buffer setup.
++ */
++static int cfi_ep_set_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
++{
++	uint8_t inaddr, outaddr;
++	cfi_ep_t *epin, *epout;
++	ddma_sg_buffer_setup_t *psgval;
++	uint32_t desccount, size;
++
++	CFI_INFO("%s\n", __func__);
++
++	psgval = (ddma_sg_buffer_setup_t *) buf;
++	desccount = (uint32_t) psgval->bCount;
++	size = (uint32_t) psgval->wSize;
++
++	/* Check the DMA descriptor count */
++	if ((desccount > MAX_DMA_DESCS_PER_EP) || (desccount == 0)) {
++		CFI_INFO
++		    ("%s: The count of DMA Descriptors should be between 1 and %d\n",
++		     __func__, MAX_DMA_DESCS_PER_EP);
++		return -DWC_E_INVALID;
++	}
++
++	/* Check the DMA descriptor count */
++
++	if (size == 0) {
++
++		CFI_INFO("%s: The transfer size should be at least 1 byte\n",
++			 __func__);
++
++		return -DWC_E_INVALID;
++
++	}
++
++	inaddr = psgval->bInEndpointAddress;
++	outaddr = psgval->bOutEndpointAddress;
++
++	epin = get_cfi_ep_by_addr(pcd->cfi, inaddr);
++	epout = get_cfi_ep_by_addr(pcd->cfi, outaddr);
++
++	if (NULL == epin || NULL == epout) {
++		CFI_INFO
++		    ("%s: Unable to get the endpoints inaddr=0x%02x outaddr=0x%02x\n",
++		     __func__, inaddr, outaddr);
++		return -DWC_E_INVALID;
++	}
++
++	epin->ep->dwc_ep.buff_mode = BM_SG;
++	dwc_memcpy(epin->bm_sg, psgval, sizeof(ddma_sg_buffer_setup_t));
++
++	epout->ep->dwc_ep.buff_mode = BM_SG;
++	dwc_memcpy(epout->bm_sg, psgval, sizeof(ddma_sg_buffer_setup_t));
++
++	return 0;
++}
++
++/**
++ * This function sets a new value for the buffer Alignment setup.
++ */
++static int cfi_ep_set_alignment_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
++{
++	cfi_ep_t *ep;
++	uint8_t addr;
++	ddma_align_buffer_setup_t *palignval;
++
++	palignval = (ddma_align_buffer_setup_t *) buf;
++	addr = palignval->bEndpointAddress;
++
++	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
++
++	if (NULL == ep) {
++		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
++			 __func__, addr);
++		return -DWC_E_INVALID;
++	}
++
++	ep->ep->dwc_ep.buff_mode = BM_ALIGN;
++	dwc_memcpy(ep->bm_align, palignval, sizeof(ddma_align_buffer_setup_t));
++
++	return 0;
++}
++
++/**
++ * This function sets a new value for the Concatenation buffer setup.
++ */
++static int cfi_ep_set_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd)
++{
++	uint8_t addr;
++	cfi_ep_t *ep;
++	struct _ddma_concat_buffer_setup_hdr *pConcatValHdr;
++	uint16_t *pVals;
++	uint32_t desccount;
++	int i;
++	uint16_t mps;
++
++	pConcatValHdr = (struct _ddma_concat_buffer_setup_hdr *)buf;
++	desccount = (uint32_t) pConcatValHdr->bDescCount;
++	pVals = (uint16_t *) (buf + BS_CONCAT_VAL_HDR_LEN);
++
++	/* Check the DMA descriptor count */
++	if (desccount > MAX_DMA_DESCS_PER_EP) {
++		CFI_INFO("%s: Maximum DMA Descriptor count should be %d\n",
++			 __func__, MAX_DMA_DESCS_PER_EP);
++		return -DWC_E_INVALID;
++	}
++
++	addr = pConcatValHdr->bEndpointAddress;
++	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
++	if (NULL == ep) {
++		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
++			 __func__, addr);
++		return -DWC_E_INVALID;
++	}
++
++	mps = UGETW(ep->ep->desc->wMaxPacketSize);
++
++#if 0
++	for (i = 0; i < desccount; i++) {
++		CFI_INFO("%s: wTxSize[%d]=0x%04x\n", __func__, i, pVals[i]);
++	}
++	CFI_INFO("%s: epname=%s; mps=%d\n", __func__, ep->ep->ep.name, mps);
++#endif
++
++	/* Check the wTxSizes to be less than or equal to the mps */
++	for (i = 0; i < desccount; i++) {
++		if (pVals[i] > mps) {
++			CFI_INFO
++			    ("%s: ERROR - the wTxSize[%d] should be <= MPS (wTxSize=%d)\n",
++			     __func__, i, pVals[i]);
++			return -DWC_E_INVALID;
++		}
++	}
++
++	ep->ep->dwc_ep.buff_mode = BM_CONCAT;
++	dwc_memcpy(ep->bm_concat, pConcatValHdr, BS_CONCAT_VAL_HDR_LEN);
++
++	/* Free the previously allocated storage for the wTxBytes */
++	if (ep->bm_concat->wTxBytes) {
++		DWC_FREE(ep->bm_concat->wTxBytes);
++	}
++
++	/* Allocate a new storage for the wTxBytes field */
++	ep->bm_concat->wTxBytes =
++	    DWC_ALLOC(sizeof(uint16_t) * pConcatValHdr->bDescCount);
++	if (NULL == ep->bm_concat->wTxBytes) {
++		CFI_INFO("%s: Unable to allocate memory\n", __func__);
++		return -DWC_E_NO_MEMORY;
++	}
++
++	/* Copy the new values into the wTxBytes filed */
++	dwc_memcpy(ep->bm_concat->wTxBytes, buf + BS_CONCAT_VAL_HDR_LEN,
++		   sizeof(uint16_t) * pConcatValHdr->bDescCount);
++
++	return 0;
++}
++
++/**
++ * This function calculates the total of all FIFO sizes
++ *
++ * @param core_if Programming view of DWC_otg controller
++ *
++ * @return The total of data FIFO sizes.
++ *
++ */
++static uint16_t get_dfifo_size(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_params_t *params = core_if->core_params;
++	uint16_t dfifo_total = 0;
++	int i;
++
++	/* The shared RxFIFO size */
++	dfifo_total =
++	    params->dev_rx_fifo_size + params->dev_nperio_tx_fifo_size;
++
++	/* Add up each TxFIFO size to the total */
++	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++		dfifo_total += params->dev_tx_fifo_size[i];
++	}
++
++	return dfifo_total;
++}
++
++/**
++ * This function returns Rx FIFO size
++ *
++ * @param core_if Programming view of DWC_otg controller
++ *
++ * @return The total of data FIFO sizes.
++ *
++ */
++static int32_t get_rxfifo_size(dwc_otg_core_if_t * core_if, uint16_t wValue)
++{
++	switch (wValue >> 8) {
++	case 0:
++		return (core_if->pwron_rxfsiz <
++			32768) ? core_if->pwron_rxfsiz : 32768;
++		break;
++	case 1:
++		return core_if->core_params->dev_rx_fifo_size;
++		break;
++	default:
++		return -DWC_E_INVALID;
++		break;
++	}
++}
++
++/**
++ * This function returns Tx FIFO size for IN EP
++ *
++ * @param core_if Programming view of DWC_otg controller
++ *
++ * @return The total of data FIFO sizes.
++ *
++ */
++static int32_t get_txfifo_size(struct dwc_otg_pcd *pcd, uint16_t wValue)
++{
++	dwc_otg_pcd_ep_t *ep;
++
++	ep = get_ep_by_addr(pcd, wValue & 0xff);
++
++	if (NULL == ep) {
++		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
++			 __func__, wValue & 0xff);
++		return -DWC_E_INVALID;
++	}
++
++	if (!ep->dwc_ep.is_in) {
++		CFI_INFO
++		    ("%s: No Tx FIFO assingned to the Out endpoint addr=0x%02x\n",
++		     __func__, wValue & 0xff);
++		return -DWC_E_INVALID;
++	}
++
++	switch (wValue >> 8) {
++	case 0:
++		return (GET_CORE_IF(pcd)->pwron_txfsiz
++			[ep->dwc_ep.tx_fifo_num - 1] <
++			768) ? GET_CORE_IF(pcd)->pwron_txfsiz[ep->
++							      dwc_ep.tx_fifo_num
++							      - 1] : 32768;
++		break;
++	case 1:
++		return GET_CORE_IF(pcd)->core_params->
++		    dev_tx_fifo_size[ep->dwc_ep.num - 1];
++		break;
++	default:
++		return -DWC_E_INVALID;
++		break;
++	}
++}
++
++/**
++ * This function checks if the submitted combination of
++ * device mode FIFO sizes is possible or not.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ *
++ * @return 1 if possible, 0 otherwise.
++ *
++ */
++static uint8_t check_fifo_sizes(dwc_otg_core_if_t * core_if)
++{
++	uint16_t dfifo_actual = 0;
++	dwc_otg_core_params_t *params = core_if->core_params;
++	uint16_t start_addr = 0;
++	int i;
++
++	dfifo_actual =
++	    params->dev_rx_fifo_size + params->dev_nperio_tx_fifo_size;
++
++	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++		dfifo_actual += params->dev_tx_fifo_size[i];
++	}
++
++	if (dfifo_actual > core_if->total_fifo_size) {
++		return 0;
++	}
++
++	if (params->dev_rx_fifo_size > 32768 || params->dev_rx_fifo_size < 16)
++		return 0;
++
++	if (params->dev_nperio_tx_fifo_size > 32768
++	    || params->dev_nperio_tx_fifo_size < 16)
++		return 0;
++
++	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++
++		if (params->dev_tx_fifo_size[i] > 768
++		    || params->dev_tx_fifo_size[i] < 4)
++			return 0;
++	}
++
++	if (params->dev_rx_fifo_size > core_if->pwron_rxfsiz)
++		return 0;
++	start_addr = params->dev_rx_fifo_size;
++
++	if (params->dev_nperio_tx_fifo_size > core_if->pwron_gnptxfsiz)
++		return 0;
++	start_addr += params->dev_nperio_tx_fifo_size;
++
++	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++
++		if (params->dev_tx_fifo_size[i] > core_if->pwron_txfsiz[i])
++			return 0;
++		start_addr += params->dev_tx_fifo_size[i];
++	}
++
++	return 1;
++}
++
++/**
++ * This function resizes Device mode FIFOs
++ *
++ * @param core_if Programming view of DWC_otg controller
++ *
++ * @return 1 if successful, 0 otherwise
++ *
++ */
++static uint8_t resize_fifos(dwc_otg_core_if_t * core_if)
++{
++	int i = 0;
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	dwc_otg_core_params_t *params = core_if->core_params;
++	uint32_t rx_fifo_size;
++	fifosize_data_t nptxfifosize;
++	fifosize_data_t txfifosize[15];
++
++	uint32_t rx_fsz_bak;
++	uint32_t nptxfsz_bak;
++	uint32_t txfsz_bak[15];
++
++	uint16_t start_address;
++	uint8_t retval = 1;
++
++	if (!check_fifo_sizes(core_if)) {
++		return 0;
++	}
++
++	/* Configure data FIFO sizes */
++	if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
++		rx_fsz_bak = DWC_READ_REG32(&global_regs->grxfsiz);
++		rx_fifo_size = params->dev_rx_fifo_size;
++		DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fifo_size);
++
++		/*
++		 * Tx FIFOs These FIFOs are numbered from 1 to 15.
++		 * Indexes of the FIFO size module parameters in the
++		 * dev_tx_fifo_size array and the FIFO size registers in
++		 * the dtxfsiz array run from 0 to 14.
++		 */
++
++		/* Non-periodic Tx FIFO */
++		nptxfsz_bak = DWC_READ_REG32(&global_regs->gnptxfsiz);
++		nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
++		start_address = params->dev_rx_fifo_size;
++		nptxfifosize.b.startaddr = start_address;
++
++		DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfifosize.d32);
++
++		start_address += nptxfifosize.b.depth;
++
++		for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++			txfsz_bak[i] = DWC_READ_REG32(&global_regs->dtxfsiz[i]);
++
++			txfifosize[i].b.depth = params->dev_tx_fifo_size[i];
++			txfifosize[i].b.startaddr = start_address;
++			DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
++					txfifosize[i].d32);
++
++			start_address += txfifosize[i].b.depth;
++		}
++
++		/** Check if register values are set correctly */
++		if (rx_fifo_size != DWC_READ_REG32(&global_regs->grxfsiz)) {
++			retval = 0;
++		}
++
++		if (nptxfifosize.d32 != DWC_READ_REG32(&global_regs->gnptxfsiz)) {
++			retval = 0;
++		}
++
++		for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++			if (txfifosize[i].d32 !=
++			    DWC_READ_REG32(&global_regs->dtxfsiz[i])) {
++				retval = 0;
++			}
++		}
++
++		/** If register values are not set correctly, reset old values */
++		if (retval == 0) {
++			DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fsz_bak);
++
++			/* Non-periodic Tx FIFO */
++			DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfsz_bak);
++
++			for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++				DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
++						txfsz_bak[i]);
++			}
++		}
++	} else {
++		return 0;
++	}
++
++	/* Flush the FIFOs */
++	dwc_otg_flush_tx_fifo(core_if, 0x10);	/* all Tx FIFOs */
++	dwc_otg_flush_rx_fifo(core_if);
++
++	return retval;
++}
++
++/**
++ * This function sets a new value for the buffer Alignment setup.
++ */
++static int cfi_ep_set_tx_fifo_val(uint8_t * buf, dwc_otg_pcd_t * pcd)
++{
++	int retval;
++	uint32_t fsiz;
++	uint16_t size;
++	uint16_t ep_addr;
++	dwc_otg_pcd_ep_t *ep;
++	dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
++	tx_fifo_size_setup_t *ptxfifoval;
++
++	ptxfifoval = (tx_fifo_size_setup_t *) buf;
++	ep_addr = ptxfifoval->bEndpointAddress;
++	size = ptxfifoval->wDepth;
++
++	ep = get_ep_by_addr(pcd, ep_addr);
++
++	CFI_INFO
++	    ("%s: Set Tx FIFO size: endpoint addr=0x%02x, depth=%d, FIFO Num=%d\n",
++	     __func__, ep_addr, size, ep->dwc_ep.tx_fifo_num);
++
++	if (NULL == ep) {
++		CFI_INFO("%s: Unable to get the endpoint addr=0x%02x\n",
++			 __func__, ep_addr);
++		return -DWC_E_INVALID;
++	}
++
++	fsiz = params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1];
++	params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] = size;
++
++	if (resize_fifos(GET_CORE_IF(pcd))) {
++		retval = 0;
++	} else {
++		CFI_INFO
++		    ("%s: Error setting the feature Tx FIFO Size for EP%d\n",
++		     __func__, ep_addr);
++		params->dev_tx_fifo_size[ep->dwc_ep.tx_fifo_num - 1] = fsiz;
++		retval = -DWC_E_INVALID;
++	}
++
++	return retval;
++}
++
++/**
++ * This function sets a new value for the buffer Alignment setup.
++ */
++static int cfi_set_rx_fifo_val(uint8_t * buf, dwc_otg_pcd_t * pcd)
++{
++	int retval;
++	uint32_t fsiz;
++	uint16_t size;
++	dwc_otg_core_params_t *params = GET_CORE_IF(pcd)->core_params;
++	rx_fifo_size_setup_t *prxfifoval;
++
++	prxfifoval = (rx_fifo_size_setup_t *) buf;
++	size = prxfifoval->wDepth;
++
++	fsiz = params->dev_rx_fifo_size;
++	params->dev_rx_fifo_size = size;
++
++	if (resize_fifos(GET_CORE_IF(pcd))) {
++		retval = 0;
++	} else {
++		CFI_INFO("%s: Error setting the feature Rx FIFO Size\n",
++			 __func__);
++		params->dev_rx_fifo_size = fsiz;
++		retval = -DWC_E_INVALID;
++	}
++
++	return retval;
++}
++
++/**
++ * This function reads the SG of an EP's buffer setup into the buffer buf
++ */
++static int cfi_ep_get_sg_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
++			     struct cfi_usb_ctrlrequest *req)
++{
++	int retval = -DWC_E_INVALID;
++	uint8_t addr;
++	cfi_ep_t *ep;
++
++	/* The Low Byte of the wValue contains a non-zero address of the endpoint */
++	addr = req->wValue & 0xFF;
++	if (addr == 0)		/* The address should be non-zero */
++		return retval;
++
++	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
++	if (NULL == ep) {
++		CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
++			 __func__, addr);
++		return retval;
++	}
++
++	dwc_memcpy(buf, ep->bm_sg, BS_SG_VAL_DESC_LEN);
++	retval = BS_SG_VAL_DESC_LEN;
++	return retval;
++}
++
++/**
++ * This function reads the Concatenation value of an EP's buffer mode into
++ * the buffer buf
++ */
++static int cfi_ep_get_concat_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
++				 struct cfi_usb_ctrlrequest *req)
++{
++	int retval = -DWC_E_INVALID;
++	uint8_t addr;
++	cfi_ep_t *ep;
++	uint8_t desc_count;
++
++	/* The Low Byte of the wValue contains a non-zero address of the endpoint */
++	addr = req->wValue & 0xFF;
++	if (addr == 0)		/* The address should be non-zero */
++		return retval;
++
++	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
++	if (NULL == ep) {
++		CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
++			 __func__, addr);
++		return retval;
++	}
++
++	/* Copy the header to the buffer */
++	dwc_memcpy(buf, ep->bm_concat, BS_CONCAT_VAL_HDR_LEN);
++	/* Advance the buffer pointer by the header size */
++	buf += BS_CONCAT_VAL_HDR_LEN;
++
++	desc_count = ep->bm_concat->hdr.bDescCount;
++	/* Copy alll the wTxBytes to the buffer */
++	dwc_memcpy(buf, ep->bm_concat->wTxBytes, sizeof(uid16_t) * desc_count);
++
++	retval = BS_CONCAT_VAL_HDR_LEN + sizeof(uid16_t) * desc_count;
++	return retval;
++}
++
++/**
++ * This function reads the buffer Alignment value of an EP's buffer mode into
++ * the buffer buf
++ *
++ * @return The total number of bytes copied to the buffer or negative error code.
++ */
++static int cfi_ep_get_align_val(uint8_t * buf, struct dwc_otg_pcd *pcd,
++				struct cfi_usb_ctrlrequest *req)
++{
++	int retval = -DWC_E_INVALID;
++	uint8_t addr;
++	cfi_ep_t *ep;
++
++	/* The Low Byte of the wValue contains a non-zero address of the endpoint */
++	addr = req->wValue & 0xFF;
++	if (addr == 0)		/* The address should be non-zero */
++		return retval;
++
++	ep = get_cfi_ep_by_addr(pcd->cfi, addr);
++	if (NULL == ep) {
++		CFI_INFO("%s: Unable to get the endpoint address(0x%02x)\n",
++			 __func__, addr);
++		return retval;
++	}
++
++	dwc_memcpy(buf, ep->bm_align, BS_ALIGN_VAL_HDR_LEN);
++	retval = BS_ALIGN_VAL_HDR_LEN;
++
++	return retval;
++}
++
++/**
++ * This function sets a new value for the specified feature
++ *
++ * @param	pcd	A pointer to the PCD object
++ *
++ * @return 0 if successful, negative error code otherwise to stall the DCE.
++ */
++static int cfi_set_feature_value(struct dwc_otg_pcd *pcd)
++{
++	int retval = -DWC_E_NOT_SUPPORTED;
++	uint16_t wIndex, wValue;
++	uint8_t bRequest;
++	struct dwc_otg_core_if *coreif;
++	cfiobject_t *cfi = pcd->cfi;
++	struct cfi_usb_ctrlrequest *ctrl_req;
++	uint8_t *buf;
++	ctrl_req = &cfi->ctrl_req;
++
++	buf = pcd->cfi->ctrl_req.data;
++
++	coreif = GET_CORE_IF(pcd);
++	bRequest = ctrl_req->bRequest;
++	wIndex = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wIndex);
++	wValue = DWC_CONSTANT_CPU_TO_LE16(ctrl_req->wValue);
++
++	/* See which feature is to be modified */
++	switch (wIndex) {
++	case FT_ID_DMA_BUFFER_SETUP:
++		/* Modify the feature */
++		if ((retval = cfi_ep_set_sg_val(buf, pcd)) < 0)
++			return retval;
++
++		/* And send this request to the gadget */
++		cfi->need_gadget_att = 1;
++		break;
++
++	case FT_ID_DMA_BUFF_ALIGN:
++		if ((retval = cfi_ep_set_alignment_val(buf, pcd)) < 0)
++			return retval;
++		cfi->need_gadget_att = 1;
++		break;
++
++	case FT_ID_DMA_CONCAT_SETUP:
++		/* Modify the feature */
++		if ((retval = cfi_ep_set_concat_val(buf, pcd)) < 0)
++			return retval;
++		cfi->need_gadget_att = 1;
++		break;
++
++	case FT_ID_DMA_CIRCULAR:
++		CFI_INFO("FT_ID_DMA_CIRCULAR\n");
++		break;
++
++	case FT_ID_THRESHOLD_SETUP:
++		CFI_INFO("FT_ID_THRESHOLD_SETUP\n");
++		break;
++
++	case FT_ID_DFIFO_DEPTH:
++		CFI_INFO("FT_ID_DFIFO_DEPTH\n");
++		break;
++
++	case FT_ID_TX_FIFO_DEPTH:
++		CFI_INFO("FT_ID_TX_FIFO_DEPTH\n");
++		if ((retval = cfi_ep_set_tx_fifo_val(buf, pcd)) < 0)
++			return retval;
++		cfi->need_gadget_att = 0;
++		break;
++
++	case FT_ID_RX_FIFO_DEPTH:
++		CFI_INFO("FT_ID_RX_FIFO_DEPTH\n");
++		if ((retval = cfi_set_rx_fifo_val(buf, pcd)) < 0)
++			return retval;
++		cfi->need_gadget_att = 0;
++		break;
++	}
++
++	return retval;
++}
++
++#endif //DWC_UTE_CFI
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_cfi.h
+@@ -0,0 +1,320 @@
++/* ==========================================================================
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#if !defined(__DWC_OTG_CFI_H__)
++#define __DWC_OTG_CFI_H__
++
++#include "dwc_otg_pcd.h"
++#include "dwc_cfi_common.h"
++
++/**
++ * @file
++ * This file contains the CFI related OTG PCD specific common constants,
++ * interfaces(functions and macros) and data structures.The CFI Protocol is an
++ * optional interface for internal testing purposes that a DUT may implement to
++ * support testing of configurable features.
++ *
++ */
++
++struct dwc_otg_pcd;
++struct dwc_otg_pcd_ep;
++
++/** OTG CFI Features (properties) ID constants */
++/** This is a request for all Core Features */
++#define FT_ID_DMA_MODE					0x0001
++#define FT_ID_DMA_BUFFER_SETUP			0x0002
++#define FT_ID_DMA_BUFF_ALIGN			0x0003
++#define FT_ID_DMA_CONCAT_SETUP			0x0004
++#define FT_ID_DMA_CIRCULAR				0x0005
++#define FT_ID_THRESHOLD_SETUP			0x0006
++#define FT_ID_DFIFO_DEPTH				0x0007
++#define FT_ID_TX_FIFO_DEPTH				0x0008
++#define FT_ID_RX_FIFO_DEPTH				0x0009
++
++/**********************************************************/
++#define CFI_INFO_DEF
++
++#ifdef CFI_INFO_DEF
++#define CFI_INFO(fmt...)	DWC_PRINTF("CFI: " fmt);
++#else
++#define CFI_INFO(fmt...)
++#endif
++
++#define min(x,y) ({ \
++	x < y ? x : y; })
++
++#define max(x,y) ({ \
++	x > y ? x : y; })
++
++/**
++ * Descriptor DMA SG Buffer setup structure (SG buffer). This structure is
++ * also used for setting up a buffer for Circular DDMA.
++ */
++struct _ddma_sg_buffer_setup {
++#define BS_SG_VAL_DESC_LEN	6
++	/* The OUT EP address */
++	uint8_t bOutEndpointAddress;
++	/* The IN EP address */
++	uint8_t bInEndpointAddress;
++	/* Number of bytes to put between transfer segments (must be DWORD boundaries) */
++	uint8_t bOffset;
++	/* The number of transfer segments (a DMA descriptors per each segment) */
++	uint8_t bCount;
++	/* Size (in byte) of each transfer segment */
++	uint16_t wSize;
++} __attribute__ ((packed));
++typedef struct _ddma_sg_buffer_setup ddma_sg_buffer_setup_t;
++
++/** Descriptor DMA Concatenation Buffer setup structure */
++struct _ddma_concat_buffer_setup_hdr {
++#define BS_CONCAT_VAL_HDR_LEN	4
++	/* The endpoint for which the buffer is to be set up */
++	uint8_t bEndpointAddress;
++	/* The count of descriptors to be used */
++	uint8_t bDescCount;
++	/* The total size of the transfer */
++	uint16_t wSize;
++} __attribute__ ((packed));
++typedef struct _ddma_concat_buffer_setup_hdr ddma_concat_buffer_setup_hdr_t;
++
++/** Descriptor DMA Concatenation Buffer setup structure */
++struct _ddma_concat_buffer_setup {
++	/* The SG header */
++	ddma_concat_buffer_setup_hdr_t hdr;
++
++	/* The XFER sizes pointer (allocated dynamically) */
++	uint16_t *wTxBytes;
++} __attribute__ ((packed));
++typedef struct _ddma_concat_buffer_setup ddma_concat_buffer_setup_t;
++
++/** Descriptor DMA Alignment Buffer setup structure */
++struct _ddma_align_buffer_setup {
++#define BS_ALIGN_VAL_HDR_LEN	2
++	uint8_t bEndpointAddress;
++	uint8_t bAlign;
++} __attribute__ ((packed));
++typedef struct _ddma_align_buffer_setup ddma_align_buffer_setup_t;
++
++/** Transmit FIFO Size setup structure */
++struct _tx_fifo_size_setup {
++	uint8_t bEndpointAddress;
++	uint16_t wDepth;
++} __attribute__ ((packed));
++typedef struct _tx_fifo_size_setup tx_fifo_size_setup_t;
++
++/** Transmit FIFO Size setup structure */
++struct _rx_fifo_size_setup {
++	uint16_t wDepth;
++} __attribute__ ((packed));
++typedef struct _rx_fifo_size_setup rx_fifo_size_setup_t;
++
++/**
++ * struct cfi_usb_ctrlrequest - the CFI implementation of the struct usb_ctrlrequest
++ * This structure encapsulates the standard usb_ctrlrequest and adds a pointer
++ * to the data returned in the data stage of a 3-stage Control Write requests.
++ */
++struct cfi_usb_ctrlrequest {
++	uint8_t bRequestType;
++	uint8_t bRequest;
++	uint16_t wValue;
++	uint16_t wIndex;
++	uint16_t wLength;
++	uint8_t *data;
++} UPACKED;
++
++/*---------------------------------------------------------------------------*/
++
++/**
++ * The CFI wrapper of the enabled and activated dwc_otg_pcd_ep structures.
++ * This structure is used to store the buffer setup data for any
++ * enabled endpoint in the PCD.
++ */
++struct cfi_ep {
++	/* Entry for the list container */
++	dwc_list_link_t lh;
++	/* Pointer to the active PCD endpoint structure */
++	struct dwc_otg_pcd_ep *ep;
++	/* The last descriptor in the chain of DMA descriptors of the endpoint */
++	struct dwc_otg_dma_desc *dma_desc_last;
++	/* The SG feature value */
++	ddma_sg_buffer_setup_t *bm_sg;
++	/* The Circular feature value */
++	ddma_sg_buffer_setup_t *bm_circ;
++	/* The Concatenation feature value */
++	ddma_concat_buffer_setup_t *bm_concat;
++	/* The Alignment feature value */
++	ddma_align_buffer_setup_t *bm_align;
++	/* XFER length */
++	uint32_t xfer_len;
++	/*
++	 * Count of DMA descriptors currently used.
++	 * The total should not exceed the MAX_DMA_DESCS_PER_EP value
++	 * defined in the dwc_otg_cil.h
++	 */
++	uint32_t desc_count;
++};
++typedef struct cfi_ep cfi_ep_t;
++
++typedef struct cfi_dma_buff {
++#define CFI_IN_BUF_LEN	1024
++#define CFI_OUT_BUF_LEN	1024
++	dma_addr_t addr;
++	uint8_t *buf;
++} cfi_dma_buff_t;
++
++struct cfiobject;
++
++/**
++ * This is the interface for the CFI operations.
++ *
++ * @param	ep_enable			Called when any endpoint is enabled and activated.
++ * @param	release				Called when the CFI object is released and it needs to correctly
++ *								deallocate the dynamic memory
++ * @param	ctrl_write_complete	Called when the data stage of the request is complete
++ */
++typedef struct cfi_ops {
++	int (*ep_enable) (struct cfiobject * cfi, struct dwc_otg_pcd * pcd,
++			  struct dwc_otg_pcd_ep * ep);
++	void *(*ep_alloc_buf) (struct cfiobject * cfi, struct dwc_otg_pcd * pcd,
++			       struct dwc_otg_pcd_ep * ep, dma_addr_t * dma,
++			       unsigned size, gfp_t flags);
++	void (*release) (struct cfiobject * cfi);
++	int (*ctrl_write_complete) (struct cfiobject * cfi,
++				    struct dwc_otg_pcd * pcd);
++	void (*build_descriptors) (struct cfiobject * cfi,
++				   struct dwc_otg_pcd * pcd,
++				   struct dwc_otg_pcd_ep * ep,
++				   dwc_otg_pcd_request_t * req);
++} cfi_ops_t;
++
++struct cfiobject {
++	cfi_ops_t ops;
++	struct dwc_otg_pcd *pcd;
++	struct usb_gadget *gadget;
++
++	/* Buffers used to send/receive CFI-related request data */
++	cfi_dma_buff_t buf_in;
++	cfi_dma_buff_t buf_out;
++
++	/* CFI specific Control request wrapper */
++	struct cfi_usb_ctrlrequest ctrl_req;
++
++	/* The list of active EP's in the PCD of type cfi_ep_t */
++	dwc_list_link_t active_eps;
++
++	/* This flag shall control the propagation of a specific request
++	 * to the gadget's processing routines.
++	 * 0 - no gadget handling
++	 * 1 - the gadget needs to know about this request (w/o completing a status
++	 * phase - just return a 0 to the _setup callback)
++	 */
++	uint8_t need_gadget_att;
++
++	/* Flag indicating whether the status IN phase needs to be
++	 * completed by the PCD
++	 */
++	uint8_t need_status_in_complete;
++};
++typedef struct cfiobject cfiobject_t;
++
++#define DUMP_MSG
++
++#if defined(DUMP_MSG)
++static inline void dump_msg(const u8 * buf, unsigned int length)
++{
++	unsigned int start, num, i;
++	char line[52], *p;
++
++	if (length >= 512)
++		return;
++
++	start = 0;
++	while (length > 0) {
++		num = min(length, 16u);
++		p = line;
++		for (i = 0; i < num; ++i) {
++			if (i == 8)
++				*p++ = ' ';
++			DWC_SPRINTF(p, " %02x", buf[i]);
++			p += 3;
++		}
++		*p = 0;
++		DWC_DEBUG("%6x: %s\n", start, line);
++		buf += num;
++		start += num;
++		length -= num;
++	}
++}
++#else
++static inline void dump_msg(const u8 * buf, unsigned int length)
++{
++}
++#endif
++
++/**
++ * This function returns a pointer to cfi_ep_t object with the addr address.
++ */
++static inline struct cfi_ep *get_cfi_ep_by_addr(struct cfiobject *cfi,
++						uint8_t addr)
++{
++	struct cfi_ep *pcfiep;
++	dwc_list_link_t *tmp;
++
++	DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
++		pcfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
++
++		if (pcfiep->ep->desc->bEndpointAddress == addr) {
++			return pcfiep;
++		}
++	}
++
++	return NULL;
++}
++
++/**
++ * This function returns a pointer to cfi_ep_t object that matches
++ * the dwc_otg_pcd_ep object.
++ */
++static inline struct cfi_ep *get_cfi_ep_by_pcd_ep(struct cfiobject *cfi,
++						  struct dwc_otg_pcd_ep *ep)
++{
++	struct cfi_ep *pcfiep = NULL;
++	dwc_list_link_t *tmp;
++
++	DWC_LIST_FOREACH(tmp, &cfi->active_eps) {
++		pcfiep = DWC_LIST_ENTRY(tmp, struct cfi_ep, lh);
++		if (pcfiep->ep == ep) {
++			return pcfiep;
++		}
++	}
++	return NULL;
++}
++
++int cfi_setup(struct dwc_otg_pcd *pcd, struct cfi_usb_ctrlrequest *ctrl);
++
++#endif /* (__DWC_OTG_CFI_H__) */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_cil.c
+@@ -0,0 +1,7146 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.c $
++ * $Revision: #191 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++/** @file
++ *
++ * The Core Interface Layer provides basic services for accessing and
++ * managing the DWC_otg hardware. These services are used by both the
++ * Host Controller Driver and the Peripheral Controller Driver.
++ *
++ * The CIL manages the memory map for the core so that the HCD and PCD
++ * don't have to do this separately. It also handles basic tasks like
++ * reading/writing the registers and data FIFOs in the controller.
++ * Some of the data access functions provide encapsulation of several
++ * operations required to perform a task, such as writing multiple
++ * registers to start a transfer. Finally, the CIL performs basic
++ * services that are not specific to either the host or device modes
++ * of operation. These services include management of the OTG Host
++ * Negotiation Protocol (HNP) and Session Request Protocol (SRP). A
++ * Diagnostic API is also provided to allow testing of the controller
++ * hardware.
++ *
++ * The Core Interface Layer has the following requirements:
++ * - Provides basic controller operations.
++ * - Minimal use of OS services.
++ * - The OS services used will be abstracted by using inline functions
++ *	 or macros.
++ *
++ */
++
++#include "dwc_os.h"
++#include "dwc_otg_regs.h"
++#include "dwc_otg_cil.h"
++
++extern bool cil_force_host;
++
++static int dwc_otg_setup_params(dwc_otg_core_if_t * core_if);
++
++/**
++ * This function is called to initialize the DWC_otg CSR data
++ * structures. The register addresses in the device and host
++ * structures are initialized from the base address supplied by the
++ * caller. The calling function must make the OS calls to get the
++ * base address of the DWC_otg controller registers. The core_params
++ * argument holds the parameters that specify how the core should be
++ * configured.
++ *
++ * @param reg_base_addr Base address of DWC_otg core registers
++ *
++ */
++dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t * reg_base_addr)
++{
++	dwc_otg_core_if_t *core_if = 0;
++	dwc_otg_dev_if_t *dev_if = 0;
++	dwc_otg_host_if_t *host_if = 0;
++	uint8_t *reg_base = (uint8_t *) reg_base_addr;
++	int i = 0;
++
++	DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, reg_base_addr);
++
++	core_if = DWC_ALLOC(sizeof(dwc_otg_core_if_t));
++
++	if (core_if == NULL) {
++		DWC_DEBUGPL(DBG_CIL,
++			    "Allocation of dwc_otg_core_if_t failed\n");
++		return 0;
++	}
++	core_if->core_global_regs = (dwc_otg_core_global_regs_t *) reg_base;
++
++	/*
++	 * Allocate the Device Mode structures.
++	 */
++	dev_if = DWC_ALLOC(sizeof(dwc_otg_dev_if_t));
++
++	if (dev_if == NULL) {
++		DWC_DEBUGPL(DBG_CIL, "Allocation of dwc_otg_dev_if_t failed\n");
++		DWC_FREE(core_if);
++		return 0;
++	}
++
++	dev_if->dev_global_regs =
++	    (dwc_otg_device_global_regs_t *) (reg_base +
++					      DWC_DEV_GLOBAL_REG_OFFSET);
++
++	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++		dev_if->in_ep_regs[i] = (dwc_otg_dev_in_ep_regs_t *)
++		    (reg_base + DWC_DEV_IN_EP_REG_OFFSET +
++		     (i * DWC_EP_REG_OFFSET));
++
++		dev_if->out_ep_regs[i] = (dwc_otg_dev_out_ep_regs_t *)
++		    (reg_base + DWC_DEV_OUT_EP_REG_OFFSET +
++		     (i * DWC_EP_REG_OFFSET));
++		DWC_DEBUGPL(DBG_CILV, "in_ep_regs[%d]->diepctl=%p\n",
++			    i, &dev_if->in_ep_regs[i]->diepctl);
++		DWC_DEBUGPL(DBG_CILV, "out_ep_regs[%d]->doepctl=%p\n",
++			    i, &dev_if->out_ep_regs[i]->doepctl);
++	}
++
++	dev_if->speed = 0;	// unknown
++
++	core_if->dev_if = dev_if;
++
++	/*
++	 * Allocate the Host Mode structures.
++	 */
++	host_if = DWC_ALLOC(sizeof(dwc_otg_host_if_t));
++
++	if (host_if == NULL) {
++		DWC_DEBUGPL(DBG_CIL,
++			    "Allocation of dwc_otg_host_if_t failed\n");
++		DWC_FREE(dev_if);
++		DWC_FREE(core_if);
++		return 0;
++	}
++
++	host_if->host_global_regs = (dwc_otg_host_global_regs_t *)
++	    (reg_base + DWC_OTG_HOST_GLOBAL_REG_OFFSET);
++
++	host_if->hprt0 =
++	    (uint32_t *) (reg_base + DWC_OTG_HOST_PORT_REGS_OFFSET);
++
++	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++		host_if->hc_regs[i] = (dwc_otg_hc_regs_t *)
++		    (reg_base + DWC_OTG_HOST_CHAN_REGS_OFFSET +
++		     (i * DWC_OTG_CHAN_REGS_OFFSET));
++		DWC_DEBUGPL(DBG_CILV, "hc_reg[%d]->hcchar=%p\n",
++			    i, &host_if->hc_regs[i]->hcchar);
++	}
++
++	host_if->num_host_channels = MAX_EPS_CHANNELS;
++	core_if->host_if = host_if;
++
++	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++		core_if->data_fifo[i] =
++		    (uint32_t *) (reg_base + DWC_OTG_DATA_FIFO_OFFSET +
++				  (i * DWC_OTG_DATA_FIFO_SIZE));
++		DWC_DEBUGPL(DBG_CILV, "data_fifo[%d]=0x%08lx\n",
++			    i, (unsigned long)core_if->data_fifo[i]);
++	}
++
++	core_if->pcgcctl = (uint32_t *) (reg_base + DWC_OTG_PCGCCTL_OFFSET);
++
++	/* Initiate lx_state to L3 disconnected state */
++	core_if->lx_state = DWC_OTG_L3;
++	/*
++	 * Store the contents of the hardware configuration registers here for
++	 * easy access later.
++	 */
++	core_if->hwcfg1.d32 =
++	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg1);
++	core_if->hwcfg2.d32 =
++	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg2);
++	core_if->hwcfg3.d32 =
++	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg3);
++	core_if->hwcfg4.d32 =
++	    DWC_READ_REG32(&core_if->core_global_regs->ghwcfg4);
++
++	/* Force host mode to get HPTXFSIZ exact power on value */
++	{
++		gusbcfg_data_t gusbcfg = {.d32 = 0 };
++		gusbcfg.d32 =  DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++		gusbcfg.b.force_host_mode = 1;
++		DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
++		dwc_mdelay(100);
++		core_if->hptxfsiz.d32 =
++		DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
++		gusbcfg.d32 =  DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++		if (cil_force_host)
++			gusbcfg.b.force_host_mode = 1;
++		else
++			gusbcfg.b.force_host_mode = 0;
++		DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
++		dwc_mdelay(100);
++	}
++
++	DWC_DEBUGPL(DBG_CILV, "hwcfg1=%08x\n", core_if->hwcfg1.d32);
++	DWC_DEBUGPL(DBG_CILV, "hwcfg2=%08x\n", core_if->hwcfg2.d32);
++	DWC_DEBUGPL(DBG_CILV, "hwcfg3=%08x\n", core_if->hwcfg3.d32);
++	DWC_DEBUGPL(DBG_CILV, "hwcfg4=%08x\n", core_if->hwcfg4.d32);
++
++	core_if->hcfg.d32 =
++	    DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
++	core_if->dcfg.d32 =
++	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++
++	DWC_DEBUGPL(DBG_CILV, "hcfg=%08x\n", core_if->hcfg.d32);
++	DWC_DEBUGPL(DBG_CILV, "dcfg=%08x\n", core_if->dcfg.d32);
++
++	DWC_DEBUGPL(DBG_CILV, "op_mode=%0x\n", core_if->hwcfg2.b.op_mode);
++	DWC_DEBUGPL(DBG_CILV, "arch=%0x\n", core_if->hwcfg2.b.architecture);
++	DWC_DEBUGPL(DBG_CILV, "num_dev_ep=%d\n", core_if->hwcfg2.b.num_dev_ep);
++	DWC_DEBUGPL(DBG_CILV, "num_host_chan=%d\n",
++		    core_if->hwcfg2.b.num_host_chan);
++	DWC_DEBUGPL(DBG_CILV, "nonperio_tx_q_depth=0x%0x\n",
++		    core_if->hwcfg2.b.nonperio_tx_q_depth);
++	DWC_DEBUGPL(DBG_CILV, "host_perio_tx_q_depth=0x%0x\n",
++		    core_if->hwcfg2.b.host_perio_tx_q_depth);
++	DWC_DEBUGPL(DBG_CILV, "dev_token_q_depth=0x%0x\n",
++		    core_if->hwcfg2.b.dev_token_q_depth);
++
++	DWC_DEBUGPL(DBG_CILV, "Total FIFO SZ=%d\n",
++		    core_if->hwcfg3.b.dfifo_depth);
++	DWC_DEBUGPL(DBG_CILV, "xfer_size_cntr_width=%0x\n",
++		    core_if->hwcfg3.b.xfer_size_cntr_width);
++
++	/*
++	 * Set the SRP sucess bit for FS-I2c
++	 */
++	core_if->srp_success = 0;
++	core_if->srp_timer_started = 0;
++
++	/*
++	 * Create new workqueue and init works
++	 */
++	core_if->wq_otg = DWC_WORKQ_ALLOC("dwc_otg");
++	if (core_if->wq_otg == 0) {
++		DWC_WARN("DWC_WORKQ_ALLOC failed\n");
++		DWC_FREE(host_if);
++		DWC_FREE(dev_if);
++		DWC_FREE(core_if);
++		return 0;
++	}
++
++	core_if->snpsid = DWC_READ_REG32(&core_if->core_global_regs->gsnpsid);
++
++	DWC_PRINTF("Core Release: %x.%x%x%x\n",
++		   (core_if->snpsid >> 12 & 0xF),
++		   (core_if->snpsid >> 8 & 0xF),
++		   (core_if->snpsid >> 4 & 0xF), (core_if->snpsid & 0xF));
++
++	core_if->wkp_timer = DWC_TIMER_ALLOC("Wake Up Timer",
++					     w_wakeup_detected, core_if);
++	if (core_if->wkp_timer == 0) {
++		DWC_WARN("DWC_TIMER_ALLOC failed\n");
++		DWC_FREE(host_if);
++		DWC_FREE(dev_if);
++		DWC_WORKQ_FREE(core_if->wq_otg);
++		DWC_FREE(core_if);
++		return 0;
++	}
++
++	if (dwc_otg_setup_params(core_if)) {
++		DWC_WARN("Error while setting core params\n");
++	}
++
++	core_if->hibernation_suspend = 0;
++
++	/** ADP initialization */
++	dwc_otg_adp_init(core_if);
++
++	return core_if;
++}
++
++/**
++ * This function frees the structures allocated by dwc_otg_cil_init().
++ *
++ * @param core_if The core interface pointer returned from
++ * 		  dwc_otg_cil_init().
++ *
++ */
++void dwc_otg_cil_remove(dwc_otg_core_if_t * core_if)
++{
++	dctl_data_t dctl = {.d32 = 0 };
++	DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, core_if);
++
++	/* Disable all interrupts */
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, 1, 0);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0);
++
++	dctl.b.sftdiscon = 1;
++	if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0,
++				 dctl.d32);
++	}
++
++	if (core_if->wq_otg) {
++		DWC_WORKQ_WAIT_WORK_DONE(core_if->wq_otg, 500);
++		DWC_WORKQ_FREE(core_if->wq_otg);
++	}
++	if (core_if->dev_if) {
++		DWC_FREE(core_if->dev_if);
++	}
++	if (core_if->host_if) {
++		DWC_FREE(core_if->host_if);
++	}
++
++	/** Remove ADP Stuff  */
++	dwc_otg_adp_remove(core_if);
++	if (core_if->core_params) {
++		DWC_FREE(core_if->core_params);
++	}
++	if (core_if->wkp_timer) {
++		DWC_TIMER_FREE(core_if->wkp_timer);
++	}
++	if (core_if->srp_timer) {
++		DWC_TIMER_FREE(core_if->srp_timer);
++	}
++	DWC_FREE(core_if);
++}
++
++/**
++ * This function enables the controller's Global Interrupt in the AHB Config
++ * register.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t * core_if)
++{
++	gahbcfg_data_t ahbcfg = {.d32 = 0 };
++	ahbcfg.b.glblintrmsk = 1;	/* Enable interrupts */
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, 0, ahbcfg.d32);
++}
++
++/**
++ * This function disables the controller's Global Interrupt in the AHB Config
++ * register.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t * core_if)
++{
++	gahbcfg_data_t ahbcfg = {.d32 = 0 };
++	ahbcfg.b.glblintrmsk = 1;	/* Disable interrupts */
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gahbcfg, ahbcfg.d32, 0);
++}
++
++/**
++ * This function initializes the commmon interrupts, used in both
++ * device and host modes.
++ *
++ * @param core_if Programming view of the DWC_otg controller
++ *
++ */
++static void dwc_otg_enable_common_interrupts(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	/* Clear any pending OTG Interrupts */
++	DWC_WRITE_REG32(&global_regs->gotgint, 0xFFFFFFFF);
++
++	/* Clear any pending interrupts */
++	DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
++
++	/*
++	 * Enable the interrupts in the GINTMSK.
++	 */
++	intr_mask.b.modemismatch = 1;
++	intr_mask.b.otgintr = 1;
++
++	if (!core_if->dma_enable) {
++		intr_mask.b.rxstsqlvl = 1;
++	}
++
++	intr_mask.b.conidstschng = 1;
++	intr_mask.b.wkupintr = 1;
++	intr_mask.b.disconnect = 0;
++	intr_mask.b.usbsuspend = 1;
++	intr_mask.b.sessreqintr = 1;
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	if (core_if->core_params->lpm_enable) {
++		intr_mask.b.lpmtranrcvd = 1;
++	}
++#endif
++	DWC_WRITE_REG32(&global_regs->gintmsk, intr_mask.d32);
++}
++
++/*
++ * The restore operation is modified to support Synopsys Emulated Powerdown and
++ * Hibernation. This function is for exiting from Device mode hibernation by
++ * Host Initiated Resume/Reset and Device Initiated Remote-Wakeup.
++ * @param core_if Programming view of DWC_otg controller.
++ * @param rem_wakeup - indicates whether resume is initiated by Device or Host.
++ * @param reset - indicates whether resume is initiated by Reset.
++ */
++int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
++				       int rem_wakeup, int reset)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	pcgcctl_data_t pcgcctl = {.d32 = 0 };
++	dctl_data_t dctl = {.d32 = 0 };
++
++	int timeout = 2000;
++
++	if (!core_if->hibernation_suspend) {
++		DWC_PRINTF("Already exited from Hibernation\n");
++		return 1;
++	}
++
++	DWC_DEBUGPL(DBG_PCD, "%s called\n", __FUNCTION__);
++	/* Switch-on voltage to the core */
++	gpwrdn.b.pwrdnswtch = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Reset core */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Assert Restore signal */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.restore = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++	dwc_udelay(10);
++
++	/* Disable power clamps */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnclmp = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	if (rem_wakeup) {
++		dwc_udelay(70);
++	}
++
++	/* Deassert Reset core */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++	dwc_udelay(10);
++
++	/* Disable PMU interrupt */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuintsel = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/* Mask interrupts from gpwrdn */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.connect_det_msk = 1;
++	gpwrdn.b.srp_det_msk = 1;
++	gpwrdn.b.disconn_det_msk = 1;
++	gpwrdn.b.rst_det_msk = 1;
++	gpwrdn.b.lnstchng_msk = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/* Indicates that we are going out from hibernation */
++	core_if->hibernation_suspend = 0;
++
++	/*
++	 * Set Restore Essential Regs bit in PCGCCTL register, restore_mode = 1
++	 * indicates restore from remote_wakeup
++	 */
++	restore_essential_regs(core_if, rem_wakeup, 0);
++
++	/*
++	 * Wait a little for seeing new value of variable hibernation_suspend if
++	 * Restore done interrupt received before polling
++	 */
++	dwc_udelay(10);
++
++	if (core_if->hibernation_suspend == 0) {
++		/*
++		 * Wait For Restore_done Interrupt. This mechanism of polling the
++		 * interrupt is introduced to avoid any possible race conditions
++		 */
++		do {
++			gintsts_data_t gintsts;
++			gintsts.d32 =
++			    DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++			if (gintsts.b.restoredone) {
++				gintsts.d32 = 0;
++				gintsts.b.restoredone = 1;
++				DWC_WRITE_REG32(&core_if->core_global_regs->
++						gintsts, gintsts.d32);
++				DWC_PRINTF("Restore Done Interrupt seen\n");
++				break;
++			}
++			dwc_udelay(10);
++		} while (--timeout);
++		if (!timeout) {
++			DWC_PRINTF("Restore Done interrupt wasn't generated here\n");
++		}
++	}
++	/* Clear all pending interupts */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++
++	/* De-assert Restore */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.restore = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	if (!rem_wakeup) {
++		pcgcctl.d32 = 0;
++		pcgcctl.b.rstpdwnmodule = 1;
++		DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
++	}
++
++	/* Restore GUSBCFG and DCFG */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
++			core_if->gr_backup->gusbcfg_local);
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
++			core_if->dr_backup->dcfg);
++
++	/* De-assert Wakeup Logic */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuactv = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	if (!rem_wakeup) {
++		/* Set Device programming done bit */
++		dctl.b.pwronprgdone = 1;
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
++	} else {
++		/* Start Remote Wakeup Signaling */
++		dctl.d32 = core_if->dr_backup->dctl;
++		dctl.b.rmtwkupsig = 1;
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
++	}
++
++	dwc_mdelay(2);
++	/* Clear all pending interupts */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++
++	/* Restore global registers */
++	dwc_otg_restore_global_regs(core_if);
++	/* Restore device global registers */
++	dwc_otg_restore_dev_regs(core_if, rem_wakeup);
++
++	if (rem_wakeup) {
++		dwc_mdelay(7);
++		dctl.d32 = 0;
++		dctl.b.rmtwkupsig = 1;
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
++	}
++
++	core_if->hibernation_suspend = 0;
++	/* The core will be in ON STATE */
++	core_if->lx_state = DWC_OTG_L0;
++	DWC_PRINTF("Hibernation recovery completes here\n");
++
++	return 1;
++}
++
++/*
++ * The restore operation is modified to support Synopsys Emulated Powerdown and
++ * Hibernation. This function is for exiting from Host mode hibernation by
++ * Host Initiated Resume/Reset and Device Initiated Remote-Wakeup.
++ * @param core_if Programming view of DWC_otg controller.
++ * @param rem_wakeup - indicates whether resume is initiated by Device or Host.
++ * @param reset - indicates whether resume is initiated by Reset.
++ */
++int dwc_otg_host_hibernation_restore(dwc_otg_core_if_t * core_if,
++				     int rem_wakeup, int reset)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	hprt0_data_t hprt0 = {.d32 = 0 };
++
++	int timeout = 2000;
++
++	DWC_DEBUGPL(DBG_HCD, "%s called\n", __FUNCTION__);
++	/* Switch-on voltage to the core */
++	gpwrdn.b.pwrdnswtch = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Reset core */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Assert Restore signal */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.restore = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++	dwc_udelay(10);
++
++	/* Disable power clamps */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnclmp = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	if (!rem_wakeup) {
++		dwc_udelay(50);
++	}
++
++	/* Deassert Reset core */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++	dwc_udelay(10);
++
++	/* Disable PMU interrupt */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuintsel = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	gpwrdn.d32 = 0;
++	gpwrdn.b.connect_det_msk = 1;
++	gpwrdn.b.srp_det_msk = 1;
++	gpwrdn.b.disconn_det_msk = 1;
++	gpwrdn.b.rst_det_msk = 1;
++	gpwrdn.b.lnstchng_msk = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/* Indicates that we are going out from hibernation */
++	core_if->hibernation_suspend = 0;
++
++	/* Set Restore Essential Regs bit in PCGCCTL register */
++	restore_essential_regs(core_if, rem_wakeup, 1);
++
++	/* Wait a little for seeing new value of variable hibernation_suspend if
++	 * Restore done interrupt received before polling */
++	dwc_udelay(10);
++
++	if (core_if->hibernation_suspend == 0) {
++		/* Wait For Restore_done Interrupt. This mechanism of polling the
++		 * interrupt is introduced to avoid any possible race conditions
++		 */
++		do {
++			gintsts_data_t gintsts;
++			gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++			if (gintsts.b.restoredone) {
++				gintsts.d32 = 0;
++				gintsts.b.restoredone = 1;
++			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++				DWC_DEBUGPL(DBG_HCD,"Restore Done Interrupt seen\n");
++				break;
++			}
++			dwc_udelay(10);
++		} while (--timeout);
++		if (!timeout) {
++			DWC_WARN("Restore Done interrupt wasn't generated\n");
++		}
++	}
++
++	/* Set the flag's value to 0 again after receiving restore done interrupt */
++	core_if->hibernation_suspend = 0;
++
++	/* This step is not described in functional spec but if not wait for this
++	 * delay, mismatch interrupts occurred because just after restore core is
++	 * in Device mode(gintsts.curmode == 0) */
++	dwc_mdelay(100);
++
++	/* Clear all pending interrupts */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++
++	/* De-assert Restore */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.restore = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Restore GUSBCFG and HCFG */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
++			core_if->gr_backup->gusbcfg_local);
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg,
++			core_if->hr_backup->hcfg_local);
++
++	/* De-assert Wakeup Logic */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuactv = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Start the Resume operation by programming HPRT0 */
++	hprt0.d32 = core_if->hr_backup->hprt0_local;
++	hprt0.b.prtpwr = 1;
++	hprt0.b.prtena = 0;
++	hprt0.b.prtsusp = 0;
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++	DWC_PRINTF("Resume Starts Now\n");
++	if (!reset) {		// Indicates it is Resume Operation
++		hprt0.d32 = core_if->hr_backup->hprt0_local;
++		hprt0.b.prtres = 1;
++		hprt0.b.prtpwr = 1;
++		hprt0.b.prtena = 0;
++		hprt0.b.prtsusp = 0;
++		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++		if (!rem_wakeup)
++			hprt0.b.prtres = 0;
++		/* Wait for Resume time and then program HPRT again */
++		dwc_mdelay(100);
++		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++	} else {		// Indicates it is Reset Operation
++		hprt0.d32 = core_if->hr_backup->hprt0_local;
++		hprt0.b.prtrst = 1;
++		hprt0.b.prtpwr = 1;
++		hprt0.b.prtena = 0;
++		hprt0.b.prtsusp = 0;
++		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++		/* Wait for Reset time and then program HPRT again */
++		dwc_mdelay(60);
++		hprt0.b.prtrst = 0;
++		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++	}
++	/* Clear all interrupt status */
++	hprt0.d32 = dwc_otg_read_hprt0(core_if);
++	hprt0.b.prtconndet = 1;
++	hprt0.b.prtenchng = 1;
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++	/* Clear all pending interupts */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++
++	/* Restore global registers */
++	dwc_otg_restore_global_regs(core_if);
++	/* Restore host global registers */
++	dwc_otg_restore_host_regs(core_if, reset);
++
++	/* The core will be in ON STATE */
++	core_if->lx_state = DWC_OTG_L0;
++	DWC_PRINTF("Hibernation recovery is complete here\n");
++	return 0;
++}
++
++/** Saves some register values into system memory. */
++int dwc_otg_save_global_regs(dwc_otg_core_if_t * core_if)
++{
++	struct dwc_otg_global_regs_backup *gr;
++	int i;
++
++	gr = core_if->gr_backup;
++	if (!gr) {
++		gr = DWC_ALLOC(sizeof(*gr));
++		if (!gr) {
++			return -DWC_E_NO_MEMORY;
++		}
++		core_if->gr_backup = gr;
++	}
++
++	gr->gotgctl_local = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++	gr->gintmsk_local = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
++	gr->gahbcfg_local = DWC_READ_REG32(&core_if->core_global_regs->gahbcfg);
++	gr->gusbcfg_local = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++	gr->grxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
++	gr->gnptxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz);
++	gr->hptxfsiz_local = DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	gr->glpmcfg_local = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++#endif
++	gr->gi2cctl_local = DWC_READ_REG32(&core_if->core_global_regs->gi2cctl);
++	gr->pcgcctl_local = DWC_READ_REG32(core_if->pcgcctl);
++	gr->gdfifocfg_local =
++	    DWC_READ_REG32(&core_if->core_global_regs->gdfifocfg);
++	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++		gr->dtxfsiz_local[i] =
++		    DWC_READ_REG32(&(core_if->core_global_regs->dtxfsiz[i]));
++	}
++
++	DWC_DEBUGPL(DBG_ANY, "===========Backing Global registers==========\n");
++	DWC_DEBUGPL(DBG_ANY, "Backed up gotgctl   = %08x\n", gr->gotgctl_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up gintmsk   = %08x\n", gr->gintmsk_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up gahbcfg   = %08x\n", gr->gahbcfg_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up gusbcfg   = %08x\n", gr->gusbcfg_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up grxfsiz   = %08x\n", gr->grxfsiz_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up gnptxfsiz = %08x\n",
++		    gr->gnptxfsiz_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up hptxfsiz  = %08x\n",
++		    gr->hptxfsiz_local);
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	DWC_DEBUGPL(DBG_ANY, "Backed up glpmcfg   = %08x\n", gr->glpmcfg_local);
++#endif
++	DWC_DEBUGPL(DBG_ANY, "Backed up gi2cctl   = %08x\n", gr->gi2cctl_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up pcgcctl   = %08x\n", gr->pcgcctl_local);
++	DWC_DEBUGPL(DBG_ANY,"Backed up gdfifocfg   = %08x\n",gr->gdfifocfg_local);
++
++	return 0;
++}
++
++/** Saves GINTMSK register before setting the msk bits. */
++int dwc_otg_save_gintmsk_reg(dwc_otg_core_if_t * core_if)
++{
++	struct dwc_otg_global_regs_backup *gr;
++
++	gr = core_if->gr_backup;
++	if (!gr) {
++		gr = DWC_ALLOC(sizeof(*gr));
++		if (!gr) {
++			return -DWC_E_NO_MEMORY;
++		}
++		core_if->gr_backup = gr;
++	}
++
++	gr->gintmsk_local = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
++
++	DWC_DEBUGPL(DBG_ANY,"=============Backing GINTMSK registers============\n");
++	DWC_DEBUGPL(DBG_ANY, "Backed up gintmsk   = %08x\n", gr->gintmsk_local);
++
++	return 0;
++}
++
++int dwc_otg_save_dev_regs(dwc_otg_core_if_t * core_if)
++{
++	struct dwc_otg_dev_regs_backup *dr;
++	int i;
++
++	dr = core_if->dr_backup;
++	if (!dr) {
++		dr = DWC_ALLOC(sizeof(*dr));
++		if (!dr) {
++			return -DWC_E_NO_MEMORY;
++		}
++		core_if->dr_backup = dr;
++	}
++
++	dr->dcfg = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++	dr->dctl = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
++	dr->daintmsk =
++	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
++	dr->diepmsk =
++	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->diepmsk);
++	dr->doepmsk =
++	    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->doepmsk);
++
++	for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
++		dr->diepctl[i] =
++		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl);
++		dr->dieptsiz[i] =
++		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->dieptsiz);
++		dr->diepdma[i] =
++		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepdma);
++	}
++
++	DWC_DEBUGPL(DBG_ANY,
++		    "=============Backing Host registers==============\n");
++	DWC_DEBUGPL(DBG_ANY, "Backed up dcfg            = %08x\n", dr->dcfg);
++	DWC_DEBUGPL(DBG_ANY, "Backed up dctl        = %08x\n", dr->dctl);
++	DWC_DEBUGPL(DBG_ANY, "Backed up daintmsk            = %08x\n",
++		    dr->daintmsk);
++	DWC_DEBUGPL(DBG_ANY, "Backed up diepmsk        = %08x\n", dr->diepmsk);
++	DWC_DEBUGPL(DBG_ANY, "Backed up doepmsk        = %08x\n", dr->doepmsk);
++	for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
++		DWC_DEBUGPL(DBG_ANY, "Backed up diepctl[%d]        = %08x\n", i,
++			    dr->diepctl[i]);
++		DWC_DEBUGPL(DBG_ANY, "Backed up dieptsiz[%d]        = %08x\n",
++			    i, dr->dieptsiz[i]);
++		DWC_DEBUGPL(DBG_ANY, "Backed up diepdma[%d]        = %08x\n", i,
++			    dr->diepdma[i]);
++	}
++
++	return 0;
++}
++
++int dwc_otg_save_host_regs(dwc_otg_core_if_t * core_if)
++{
++	struct dwc_otg_host_regs_backup *hr;
++	int i;
++
++	hr = core_if->hr_backup;
++	if (!hr) {
++		hr = DWC_ALLOC(sizeof(*hr));
++		if (!hr) {
++			return -DWC_E_NO_MEMORY;
++		}
++		core_if->hr_backup = hr;
++	}
++
++	hr->hcfg_local =
++	    DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
++	hr->haintmsk_local =
++	    DWC_READ_REG32(&core_if->host_if->host_global_regs->haintmsk);
++	for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
++		hr->hcintmsk_local[i] =
++		    DWC_READ_REG32(&core_if->host_if->hc_regs[i]->hcintmsk);
++	}
++	hr->hprt0_local = DWC_READ_REG32(core_if->host_if->hprt0);
++	hr->hfir_local =
++	    DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
++
++	DWC_DEBUGPL(DBG_ANY,
++		    "=============Backing Host registers===============\n");
++	DWC_DEBUGPL(DBG_ANY, "Backed up hcfg		= %08x\n",
++		    hr->hcfg_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up haintmsk = %08x\n", hr->haintmsk_local);
++	for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
++		DWC_DEBUGPL(DBG_ANY, "Backed up hcintmsk[%02d]=%08x\n", i,
++			    hr->hcintmsk_local[i]);
++	}
++	DWC_DEBUGPL(DBG_ANY, "Backed up hprt0           = %08x\n",
++		    hr->hprt0_local);
++	DWC_DEBUGPL(DBG_ANY, "Backed up hfir           = %08x\n",
++		    hr->hfir_local);
++
++	return 0;
++}
++
++int dwc_otg_restore_global_regs(dwc_otg_core_if_t *core_if)
++{
++	struct dwc_otg_global_regs_backup *gr;
++	int i;
++
++	gr = core_if->gr_backup;
++	if (!gr) {
++		return -DWC_E_INVALID;
++	}
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, gr->gotgctl_local);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gr->gintmsk_local);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gr->gusbcfg_local);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gr->gahbcfg_local);
++	DWC_WRITE_REG32(&core_if->core_global_regs->grxfsiz, gr->grxfsiz_local);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gnptxfsiz,
++			gr->gnptxfsiz_local);
++	DWC_WRITE_REG32(&core_if->core_global_regs->hptxfsiz,
++			gr->hptxfsiz_local);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gdfifocfg,
++			gr->gdfifocfg_local);
++	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++		DWC_WRITE_REG32(&core_if->core_global_regs->dtxfsiz[i],
++				gr->dtxfsiz_local[i]);
++	}
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++	DWC_WRITE_REG32(core_if->host_if->hprt0, 0x0000100A);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg,
++			(gr->gahbcfg_local));
++	return 0;
++}
++
++int dwc_otg_restore_dev_regs(dwc_otg_core_if_t * core_if, int rem_wakeup)
++{
++	struct dwc_otg_dev_regs_backup *dr;
++	int i;
++
++	dr = core_if->dr_backup;
++
++	if (!dr) {
++		return -DWC_E_INVALID;
++	}
++
++	if (!rem_wakeup) {
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
++				dr->dctl);
++	}
++
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->daintmsk, dr->daintmsk);
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->diepmsk, dr->diepmsk);
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->doepmsk, dr->doepmsk);
++
++	for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
++		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->dieptsiz, dr->dieptsiz[i]);
++		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->diepdma, dr->diepdma[i]);
++		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl, dr->diepctl[i]);
++	}
++
++	return 0;
++}
++
++int dwc_otg_restore_host_regs(dwc_otg_core_if_t * core_if, int reset)
++{
++	struct dwc_otg_host_regs_backup *hr;
++	int i;
++	hr = core_if->hr_backup;
++
++	if (!hr) {
++		return -DWC_E_INVALID;
++	}
++
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hr->hcfg_local);
++	//if (!reset)
++	//{
++	//      DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hfir, hr->hfir_local);
++	//}
++
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->haintmsk,
++			hr->haintmsk_local);
++	for (i = 0; i < dwc_otg_get_param_host_channels(core_if); ++i) {
++		DWC_WRITE_REG32(&core_if->host_if->hc_regs[i]->hcintmsk,
++				hr->hcintmsk_local[i]);
++	}
++
++	return 0;
++}
++
++int restore_lpm_i2c_regs(dwc_otg_core_if_t * core_if)
++{
++	struct dwc_otg_global_regs_backup *gr;
++
++	gr = core_if->gr_backup;
++
++	/* Restore values for LPM and I2C */
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, gr->glpmcfg_local);
++#endif
++	DWC_WRITE_REG32(&core_if->core_global_regs->gi2cctl, gr->gi2cctl_local);
++
++	return 0;
++}
++
++int restore_essential_regs(dwc_otg_core_if_t * core_if, int rmode, int is_host)
++{
++	struct dwc_otg_global_regs_backup *gr;
++	pcgcctl_data_t pcgcctl = {.d32 = 0 };
++	gahbcfg_data_t gahbcfg = {.d32 = 0 };
++	gusbcfg_data_t gusbcfg = {.d32 = 0 };
++	gintmsk_data_t gintmsk = {.d32 = 0 };
++
++	/* Restore LPM and I2C registers */
++	restore_lpm_i2c_regs(core_if);
++
++	/* Set PCGCCTL to 0 */
++	DWC_WRITE_REG32(core_if->pcgcctl, 0x00000000);
++
++	gr = core_if->gr_backup;
++	/* Load restore values for [31:14] bits */
++	DWC_WRITE_REG32(core_if->pcgcctl,
++			((gr->pcgcctl_local & 0xffffc000) | 0x00020000));
++
++	/* Umnask global Interrupt in GAHBCFG and restore it */
++	gahbcfg.d32 = gr->gahbcfg_local;
++	gahbcfg.b.glblintrmsk = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gahbcfg.d32);
++
++	/* Clear all pending interupts */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++
++	/* Unmask restore done interrupt */
++	gintmsk.b.restoredone = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32);
++
++	/* Restore GUSBCFG and HCFG/DCFG */
++	gusbcfg.d32 = core_if->gr_backup->gusbcfg_local;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, gusbcfg.d32);
++
++	if (is_host) {
++		hcfg_data_t hcfg = {.d32 = 0 };
++		hcfg.d32 = core_if->hr_backup->hcfg_local;
++		DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg,
++				hcfg.d32);
++
++		/* Load restore values for [31:14] bits */
++		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
++		pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
++
++		if (rmode)
++			pcgcctl.b.restoremode = 1;
++		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++		dwc_udelay(10);
++
++		/* Load restore values for [31:14] bits and set EssRegRestored bit */
++		pcgcctl.d32 = gr->pcgcctl_local | 0xffffc000;
++		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
++		pcgcctl.b.ess_reg_restored = 1;
++		if (rmode)
++			pcgcctl.b.restoremode = 1;
++		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++	} else {
++		dcfg_data_t dcfg = {.d32 = 0 };
++		dcfg.d32 = core_if->dr_backup->dcfg;
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
++
++		/* Load restore values for [31:14] bits */
++		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
++		pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
++		if (!rmode) {
++			pcgcctl.d32 |= 0x208;
++		}
++		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++		dwc_udelay(10);
++
++		/* Load restore values for [31:14] bits */
++		pcgcctl.d32 = gr->pcgcctl_local & 0xffffc000;
++		pcgcctl.d32 = gr->pcgcctl_local | 0x00020000;
++		pcgcctl.b.ess_reg_restored = 1;
++		if (!rmode)
++			pcgcctl.d32 |= 0x208;
++		DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++	}
++
++	return 0;
++}
++
++/**
++ * Initializes the FSLSPClkSel field of the HCFG register depending on the PHY
++ * type.
++ */
++static void init_fslspclksel(dwc_otg_core_if_t * core_if)
++{
++	uint32_t val;
++	hcfg_data_t hcfg;
++
++	if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
++	     (core_if->hwcfg2.b.fs_phy_type == 1) &&
++	     (core_if->core_params->ulpi_fs_ls)) ||
++	    (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
++		/* Full speed PHY */
++		val = DWC_HCFG_48_MHZ;
++	} else {
++		/* High speed PHY running at full speed or high speed */
++		val = DWC_HCFG_30_60_MHZ;
++	}
++
++	DWC_DEBUGPL(DBG_CIL, "Initializing HCFG.FSLSPClkSel to 0x%1x\n", val);
++	hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
++	hcfg.b.fslspclksel = val;
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hcfg.d32);
++}
++
++/**
++ * Initializes the DevSpd field of the DCFG register depending on the PHY type
++ * and the enumeration speed of the device.
++ */
++static void init_devspd(dwc_otg_core_if_t * core_if)
++{
++	uint32_t val;
++	dcfg_data_t dcfg;
++
++	if (((core_if->hwcfg2.b.hs_phy_type == 2) &&
++	     (core_if->hwcfg2.b.fs_phy_type == 1) &&
++	     (core_if->core_params->ulpi_fs_ls)) ||
++	    (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
++		/* Full speed PHY */
++		val = 0x3;
++	} else if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
++		/* High speed PHY running at full speed */
++		val = 0x1;
++	} else {
++		/* High speed PHY running at high speed */
++		val = 0x0;
++	}
++
++	DWC_DEBUGPL(DBG_CIL, "Initializing DCFG.DevSpd to 0x%1x\n", val);
++
++	dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++	dcfg.b.devspd = val;
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
++}
++
++/**
++ * This function calculates the number of IN EPS
++ * using GHWCFG1 and GHWCFG2 registers values
++ *
++ * @param core_if Programming view of the DWC_otg controller
++ */
++static uint32_t calc_num_in_eps(dwc_otg_core_if_t * core_if)
++{
++	uint32_t num_in_eps = 0;
++	uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
++	uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 3;
++	uint32_t num_tx_fifos = core_if->hwcfg4.b.num_in_eps;
++	int i;
++
++	for (i = 0; i < num_eps; ++i) {
++		if (!(hwcfg1 & 0x1))
++			num_in_eps++;
++
++		hwcfg1 >>= 2;
++	}
++
++	if (core_if->hwcfg4.b.ded_fifo_en) {
++		num_in_eps =
++		    (num_in_eps > num_tx_fifos) ? num_tx_fifos : num_in_eps;
++	}
++
++	return num_in_eps;
++}
++
++/**
++ * This function calculates the number of OUT EPS
++ * using GHWCFG1 and GHWCFG2 registers values
++ *
++ * @param core_if Programming view of the DWC_otg controller
++ */
++static uint32_t calc_num_out_eps(dwc_otg_core_if_t * core_if)
++{
++	uint32_t num_out_eps = 0;
++	uint32_t num_eps = core_if->hwcfg2.b.num_dev_ep;
++	uint32_t hwcfg1 = core_if->hwcfg1.d32 >> 2;
++	int i;
++
++	for (i = 0; i < num_eps; ++i) {
++		if (!(hwcfg1 & 0x1))
++			num_out_eps++;
++
++		hwcfg1 >>= 2;
++	}
++	return num_out_eps;
++}
++
++/**
++ * This function initializes the DWC_otg controller registers and
++ * prepares the core for device mode or host mode operation.
++ *
++ * @param core_if Programming view of the DWC_otg controller
++ *
++ */
++void dwc_otg_core_init(dwc_otg_core_if_t * core_if)
++{
++	int i = 0;
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	gahbcfg_data_t ahbcfg = {.d32 = 0 };
++	gusbcfg_data_t usbcfg = {.d32 = 0 };
++	gi2cctl_data_t i2cctl = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_CILV, "dwc_otg_core_init(%p) regs at %p\n",
++                    core_if, global_regs);
++
++	/* Common Initialization */
++	usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
++
++	/* Program the ULPI External VBUS bit if needed */
++	usbcfg.b.ulpi_ext_vbus_drv =
++	    (core_if->core_params->phy_ulpi_ext_vbus ==
++	     DWC_PHY_ULPI_EXTERNAL_VBUS) ? 1 : 0;
++
++	/* Set external TS Dline pulsing */
++	usbcfg.b.term_sel_dl_pulse =
++	    (core_if->core_params->ts_dline == 1) ? 1 : 0;
++	DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
++
++	/* Reset the Controller */
++	dwc_otg_core_reset(core_if);
++
++	core_if->adp_enable = core_if->core_params->adp_supp_enable;
++	core_if->power_down = core_if->core_params->power_down;
++	core_if->otg_sts = 0;
++
++	/* Initialize parameters from Hardware configuration registers. */
++	dev_if->num_in_eps = calc_num_in_eps(core_if);
++	dev_if->num_out_eps = calc_num_out_eps(core_if);
++
++	DWC_DEBUGPL(DBG_CIL, "num_dev_perio_in_ep=%d\n",
++		    core_if->hwcfg4.b.num_dev_perio_in_ep);
++
++	for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
++		dev_if->perio_tx_fifo_size[i] =
++		    DWC_READ_REG32(&global_regs->dtxfsiz[i]) >> 16;
++		DWC_DEBUGPL(DBG_CIL, "Periodic Tx FIFO SZ #%d=0x%0x\n",
++			    i, dev_if->perio_tx_fifo_size[i]);
++	}
++
++	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++		dev_if->tx_fifo_size[i] =
++		    DWC_READ_REG32(&global_regs->dtxfsiz[i]) >> 16;
++		DWC_DEBUGPL(DBG_CIL, "Tx FIFO SZ #%d=0x%0x\n",
++			    i, dev_if->tx_fifo_size[i]);
++	}
++
++	core_if->total_fifo_size = core_if->hwcfg3.b.dfifo_depth;
++	core_if->rx_fifo_size = DWC_READ_REG32(&global_regs->grxfsiz);
++	core_if->nperio_tx_fifo_size =
++	    DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16;
++
++	DWC_DEBUGPL(DBG_CIL, "Total FIFO SZ=%d\n", core_if->total_fifo_size);
++	DWC_DEBUGPL(DBG_CIL, "Rx FIFO SZ=%d\n", core_if->rx_fifo_size);
++	DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO SZ=%d\n",
++		    core_if->nperio_tx_fifo_size);
++
++	/* This programming sequence needs to happen in FS mode before any other
++	 * programming occurs */
++	if ((core_if->core_params->speed == DWC_SPEED_PARAM_FULL) &&
++	    (core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS)) {
++		/* If FS mode with FS PHY */
++
++		/* core_init() is now called on every switch so only call the
++		 * following for the first time through. */
++		if (!core_if->phy_init_done) {
++			core_if->phy_init_done = 1;
++			DWC_DEBUGPL(DBG_CIL, "FS_PHY detected\n");
++			usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
++			usbcfg.b.physel = 1;
++			DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
++
++			/* Reset after a PHY select */
++			dwc_otg_core_reset(core_if);
++		}
++
++		/* Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS.      Also
++		 * do this on HNP Dev/Host mode switches (done in dev_init and
++		 * host_init). */
++		if (dwc_otg_is_host_mode(core_if)) {
++			init_fslspclksel(core_if);
++		} else {
++			init_devspd(core_if);
++		}
++
++		if (core_if->core_params->i2c_enable) {
++			DWC_DEBUGPL(DBG_CIL, "FS_PHY Enabling I2c\n");
++			/* Program GUSBCFG.OtgUtmifsSel to I2C */
++			usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
++			usbcfg.b.otgutmifssel = 1;
++			DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
++
++			/* Program GI2CCTL.I2CEn */
++			i2cctl.d32 = DWC_READ_REG32(&global_regs->gi2cctl);
++			i2cctl.b.i2cdevaddr = 1;
++			i2cctl.b.i2cen = 0;
++			DWC_WRITE_REG32(&global_regs->gi2cctl, i2cctl.d32);
++			i2cctl.b.i2cen = 1;
++			DWC_WRITE_REG32(&global_regs->gi2cctl, i2cctl.d32);
++		}
++
++	} /* endif speed == DWC_SPEED_PARAM_FULL */
++	else {
++		/* High speed PHY. */
++		if (!core_if->phy_init_done) {
++			core_if->phy_init_done = 1;
++			/* HS PHY parameters.  These parameters are preserved
++			 * during soft reset so only program the first time.  Do
++			 * a soft reset immediately after setting phyif.  */
++
++			if (core_if->core_params->phy_type == 2) {
++				/* ULPI interface */
++				usbcfg.b.ulpi_utmi_sel = 1;
++				usbcfg.b.phyif = 0;
++				usbcfg.b.ddrsel =
++				    core_if->core_params->phy_ulpi_ddr;
++			} else if (core_if->core_params->phy_type == 1) {
++				/* UTMI+ interface */
++				usbcfg.b.ulpi_utmi_sel = 0;
++				if (core_if->core_params->phy_utmi_width == 16) {
++					usbcfg.b.phyif = 1;
++
++				} else {
++					usbcfg.b.phyif = 0;
++				}
++			} else {
++				DWC_ERROR("FS PHY TYPE\n");
++			}
++			DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
++			/* Reset after setting the PHY parameters */
++			dwc_otg_core_reset(core_if);
++		}
++	}
++
++	if ((core_if->hwcfg2.b.hs_phy_type == 2) &&
++	    (core_if->hwcfg2.b.fs_phy_type == 1) &&
++	    (core_if->core_params->ulpi_fs_ls)) {
++		DWC_DEBUGPL(DBG_CIL, "Setting ULPI FSLS\n");
++		usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
++		usbcfg.b.ulpi_fsls = 1;
++		usbcfg.b.ulpi_clk_sus_m = 1;
++		DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
++	} else {
++		usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
++		usbcfg.b.ulpi_fsls = 0;
++		usbcfg.b.ulpi_clk_sus_m = 0;
++		DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
++	}
++
++	/* Program the GAHBCFG Register. */
++	switch (core_if->hwcfg2.b.architecture) {
++
++	case DWC_SLAVE_ONLY_ARCH:
++		DWC_DEBUGPL(DBG_CIL, "Slave Only Mode\n");
++		ahbcfg.b.nptxfemplvl_txfemplvl =
++		    DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
++		ahbcfg.b.ptxfemplvl = DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY;
++		core_if->dma_enable = 0;
++		core_if->dma_desc_enable = 0;
++		break;
++
++	case DWC_EXT_DMA_ARCH:
++		DWC_DEBUGPL(DBG_CIL, "External DMA Mode\n");
++		{
++			uint8_t brst_sz = core_if->core_params->dma_burst_size;
++			ahbcfg.b.hburstlen = 0;
++			while (brst_sz > 1) {
++				ahbcfg.b.hburstlen++;
++				brst_sz >>= 1;
++			}
++		}
++		core_if->dma_enable = (core_if->core_params->dma_enable != 0);
++		core_if->dma_desc_enable =
++		    (core_if->core_params->dma_desc_enable != 0);
++		break;
++
++	case DWC_INT_DMA_ARCH:
++		DWC_DEBUGPL(DBG_CIL, "Internal DMA Mode\n");
++		/* Old value was DWC_GAHBCFG_INT_DMA_BURST_INCR - done for
++		  Host mode ISOC in issue fix - vahrama */
++		/* Broadcom had altered to (1<<3)|(0<<0) - WRESP=1, max 4 beats */
++		ahbcfg.b.hburstlen = (1<<3)|(0<<0);//DWC_GAHBCFG_INT_DMA_BURST_INCR4;
++		core_if->dma_enable = (core_if->core_params->dma_enable != 0);
++		core_if->dma_desc_enable =
++		    (core_if->core_params->dma_desc_enable != 0);
++		break;
++
++	}
++	if (core_if->dma_enable) {
++		if (core_if->dma_desc_enable) {
++			DWC_PRINTF("Using Descriptor DMA mode\n");
++		} else {
++			DWC_PRINTF("Using Buffer DMA mode\n");
++
++		}
++	} else {
++		DWC_PRINTF("Using Slave mode\n");
++		core_if->dma_desc_enable = 0;
++	}
++
++	if (core_if->core_params->ahb_single) {
++		ahbcfg.b.ahbsingle = 1;
++	}
++
++	ahbcfg.b.dmaenable = core_if->dma_enable;
++	DWC_WRITE_REG32(&global_regs->gahbcfg, ahbcfg.d32);
++
++	core_if->en_multiple_tx_fifo = core_if->hwcfg4.b.ded_fifo_en;
++
++	core_if->pti_enh_enable = core_if->core_params->pti_enable != 0;
++	core_if->multiproc_int_enable = core_if->core_params->mpi_enable;
++	DWC_PRINTF("Periodic Transfer Interrupt Enhancement - %s\n",
++		   ((core_if->pti_enh_enable) ? "enabled" : "disabled"));
++	DWC_PRINTF("Multiprocessor Interrupt Enhancement - %s\n",
++		   ((core_if->multiproc_int_enable) ? "enabled" : "disabled"));
++
++	/*
++	 * Program the GUSBCFG register.
++	 */
++	usbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
++
++	switch (core_if->hwcfg2.b.op_mode) {
++	case DWC_MODE_HNP_SRP_CAPABLE:
++		usbcfg.b.hnpcap = (core_if->core_params->otg_cap ==
++				   DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
++		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
++				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
++		break;
++
++	case DWC_MODE_SRP_ONLY_CAPABLE:
++		usbcfg.b.hnpcap = 0;
++		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
++				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
++		break;
++
++	case DWC_MODE_NO_HNP_SRP_CAPABLE:
++		usbcfg.b.hnpcap = 0;
++		usbcfg.b.srpcap = 0;
++		break;
++
++	case DWC_MODE_SRP_CAPABLE_DEVICE:
++		usbcfg.b.hnpcap = 0;
++		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
++				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
++		break;
++
++	case DWC_MODE_NO_SRP_CAPABLE_DEVICE:
++		usbcfg.b.hnpcap = 0;
++		usbcfg.b.srpcap = 0;
++		break;
++
++	case DWC_MODE_SRP_CAPABLE_HOST:
++		usbcfg.b.hnpcap = 0;
++		usbcfg.b.srpcap = (core_if->core_params->otg_cap !=
++				   DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
++		break;
++
++	case DWC_MODE_NO_SRP_CAPABLE_HOST:
++		usbcfg.b.hnpcap = 0;
++		usbcfg.b.srpcap = 0;
++		break;
++	}
++
++	DWC_WRITE_REG32(&global_regs->gusbcfg, usbcfg.d32);
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	if (core_if->core_params->lpm_enable) {
++		glpmcfg_data_t lpmcfg = {.d32 = 0 };
++
++		/* To enable LPM support set lpm_cap_en bit */
++		lpmcfg.b.lpm_cap_en = 1;
++
++		/* Make AppL1Res ACK */
++		lpmcfg.b.appl_resp = 1;
++
++		/* Retry 3 times */
++		lpmcfg.b.retry_count = 3;
++
++		DWC_MODIFY_REG32(&core_if->core_global_regs->glpmcfg,
++				 0, lpmcfg.d32);
++
++	}
++#endif
++	if (core_if->core_params->ic_usb_cap) {
++		gusbcfg_data_t gusbcfg = {.d32 = 0 };
++		gusbcfg.b.ic_usb_cap = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gusbcfg,
++				 0, gusbcfg.d32);
++	}
++	{
++		gotgctl_data_t gotgctl = {.d32 = 0 };
++		gotgctl.b.otgver = core_if->core_params->otg_ver;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gotgctl, 0,
++				 gotgctl.d32);
++		/* Set OTG version supported */
++		core_if->otg_ver = core_if->core_params->otg_ver;
++		DWC_PRINTF("OTG VER PARAM: %d, OTG VER FLAG: %d\n",
++			   core_if->core_params->otg_ver, core_if->otg_ver);
++	}
++
++
++	/* Enable common interrupts */
++	dwc_otg_enable_common_interrupts(core_if);
++
++	/* Do device or host intialization based on mode during PCD
++	 * and HCD initialization  */
++	if (dwc_otg_is_host_mode(core_if)) {
++		DWC_DEBUGPL(DBG_ANY, "Host Mode\n");
++		core_if->op_state = A_HOST;
++	} else {
++		DWC_DEBUGPL(DBG_ANY, "Device Mode\n");
++		core_if->op_state = B_PERIPHERAL;
++#ifdef DWC_DEVICE_ONLY
++		dwc_otg_core_dev_init(core_if);
++#endif
++	}
++}
++
++/**
++ * This function enables the Device mode interrupts.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ */
++void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t * core_if)
++{
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++
++	DWC_DEBUGPL(DBG_CIL, "%s()\n", __func__);
++
++	/* Disable all interrupts. */
++	DWC_WRITE_REG32(&global_regs->gintmsk, 0);
++
++	/* Clear any pending interrupts */
++	DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
++
++	/* Enable the common interrupts */
++	dwc_otg_enable_common_interrupts(core_if);
++
++	/* Enable interrupts */
++	intr_mask.b.usbreset = 1;
++	intr_mask.b.enumdone = 1;
++	/* Disable Disconnect interrupt in Device mode */
++	intr_mask.b.disconnect = 0;
++
++	if (!core_if->multiproc_int_enable) {
++		intr_mask.b.inepintr = 1;
++		intr_mask.b.outepintr = 1;
++	}
++
++	intr_mask.b.erlysuspend = 1;
++
++	if (core_if->en_multiple_tx_fifo == 0) {
++		intr_mask.b.epmismatch = 1;
++	}
++
++	//intr_mask.b.incomplisoout = 1;
++	intr_mask.b.incomplisoin = 1;
++
++/* Enable the ignore frame number for ISOC xfers - MAS */
++/* Disable to support high bandwith ISOC transfers - manukz */
++#if 0
++#ifdef DWC_UTE_PER_IO
++	if (core_if->dma_enable) {
++		if (core_if->dma_desc_enable) {
++			dctl_data_t dctl1 = {.d32 = 0 };
++			dctl1.b.ifrmnum = 1;
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++					 dctl, 0, dctl1.d32);
++			DWC_DEBUG("----Enabled Ignore frame number (0x%08x)",
++				  DWC_READ_REG32(&core_if->dev_if->
++						 dev_global_regs->dctl));
++		}
++	}
++#endif
++#endif
++#ifdef DWC_EN_ISOC
++	if (core_if->dma_enable) {
++		if (core_if->dma_desc_enable == 0) {
++			if (core_if->pti_enh_enable) {
++				dctl_data_t dctl = {.d32 = 0 };
++				dctl.b.ifrmnum = 1;
++				DWC_MODIFY_REG32(&core_if->
++						 dev_if->dev_global_regs->dctl,
++						 0, dctl.d32);
++			} else {
++				intr_mask.b.incomplisoin = 1;
++				intr_mask.b.incomplisoout = 1;
++			}
++		}
++	} else {
++		intr_mask.b.incomplisoin = 1;
++		intr_mask.b.incomplisoout = 1;
++	}
++#endif /* DWC_EN_ISOC */
++
++	/** @todo NGS: Should this be a module parameter? */
++#ifdef USE_PERIODIC_EP
++	intr_mask.b.isooutdrop = 1;
++	intr_mask.b.eopframe = 1;
++	intr_mask.b.incomplisoin = 1;
++	intr_mask.b.incomplisoout = 1;
++#endif
++
++	DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
++
++	DWC_DEBUGPL(DBG_CIL, "%s() gintmsk=%0x\n", __func__,
++		    DWC_READ_REG32(&global_regs->gintmsk));
++}
++
++/**
++ * This function initializes the DWC_otg controller registers for
++ * device mode.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ *
++ */
++void dwc_otg_core_dev_init(dwc_otg_core_if_t * core_if)
++{
++	int i;
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	dwc_otg_core_params_t *params = core_if->core_params;
++	dcfg_data_t dcfg = {.d32 = 0 };
++	depctl_data_t diepctl = {.d32 = 0 };
++	grstctl_t resetctl = {.d32 = 0 };
++	uint32_t rx_fifo_size;
++	fifosize_data_t nptxfifosize;
++	fifosize_data_t txfifosize;
++	dthrctl_data_t dthrctl;
++	fifosize_data_t ptxfifosize;
++	uint16_t rxfsiz, nptxfsiz;
++	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
++	hwcfg3_data_t hwcfg3 = {.d32 = 0 };
++
++	/* Restart the Phy Clock */
++	DWC_WRITE_REG32(core_if->pcgcctl, 0);
++
++	/* Device configuration register */
++	init_devspd(core_if);
++	dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
++	dcfg.b.descdma = (core_if->dma_desc_enable) ? 1 : 0;
++	dcfg.b.perfrint = DWC_DCFG_FRAME_INTERVAL_80;
++	/* Enable Device OUT NAK in case of DDMA mode*/
++	if (core_if->core_params->dev_out_nak) {
++		dcfg.b.endevoutnak = 1;
++	}
++
++	if (core_if->core_params->cont_on_bna) {
++		dctl_data_t dctl = {.d32 = 0 };
++		dctl.b.encontonbna = 1;
++		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, 0, dctl.d32);
++	}
++
++
++	DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
++
++	/* Configure data FIFO sizes */
++	if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
++		DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n",
++			    core_if->total_fifo_size);
++		DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n",
++			    params->dev_rx_fifo_size);
++		DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n",
++			    params->dev_nperio_tx_fifo_size);
++
++		/* Rx FIFO */
++		DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->grxfsiz));
++
++#ifdef DWC_UTE_CFI
++		core_if->pwron_rxfsiz = DWC_READ_REG32(&global_regs->grxfsiz);
++		core_if->init_rxfsiz = params->dev_rx_fifo_size;
++#endif
++		rx_fifo_size = params->dev_rx_fifo_size;
++		DWC_WRITE_REG32(&global_regs->grxfsiz, rx_fifo_size);
++
++		DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->grxfsiz));
++
++		/** Set Periodic Tx FIFO Mask all bits 0 */
++		core_if->p_tx_msk = 0;
++
++		/** Set Tx FIFO Mask all bits 0 */
++		core_if->tx_msk = 0;
++
++		if (core_if->en_multiple_tx_fifo == 0) {
++			/* Non-periodic Tx FIFO */
++			DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
++				    DWC_READ_REG32(&global_regs->gnptxfsiz));
++
++			nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
++			nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
++
++			DWC_WRITE_REG32(&global_regs->gnptxfsiz,
++					nptxfifosize.d32);
++
++			DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
++				    DWC_READ_REG32(&global_regs->gnptxfsiz));
++
++			/**@todo NGS: Fix Periodic FIFO Sizing! */
++			/*
++			 * Periodic Tx FIFOs These FIFOs are numbered from 1 to 15.
++			 * Indexes of the FIFO size module parameters in the
++			 * dev_perio_tx_fifo_size array and the FIFO size registers in
++			 * the dptxfsiz array run from 0 to 14.
++			 */
++			/** @todo Finish debug of this */
++			ptxfifosize.b.startaddr =
++			    nptxfifosize.b.startaddr + nptxfifosize.b.depth;
++			for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; i++) {
++				ptxfifosize.b.depth =
++				    params->dev_perio_tx_fifo_size[i];
++				DWC_DEBUGPL(DBG_CIL,
++					    "initial dtxfsiz[%d]=%08x\n", i,
++					    DWC_READ_REG32(&global_regs->dtxfsiz
++							   [i]));
++				DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
++						ptxfifosize.d32);
++				DWC_DEBUGPL(DBG_CIL, "new dtxfsiz[%d]=%08x\n",
++					    i,
++					    DWC_READ_REG32(&global_regs->dtxfsiz
++							   [i]));
++				ptxfifosize.b.startaddr += ptxfifosize.b.depth;
++			}
++		} else {
++			/*
++			 * Tx FIFOs These FIFOs are numbered from 1 to 15.
++			 * Indexes of the FIFO size module parameters in the
++			 * dev_tx_fifo_size array and the FIFO size registers in
++			 * the dtxfsiz array run from 0 to 14.
++			 */
++
++			/* Non-periodic Tx FIFO */
++			DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
++				    DWC_READ_REG32(&global_regs->gnptxfsiz));
++
++#ifdef DWC_UTE_CFI
++			core_if->pwron_gnptxfsiz =
++			    (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
++			core_if->init_gnptxfsiz =
++			    params->dev_nperio_tx_fifo_size;
++#endif
++			nptxfifosize.b.depth = params->dev_nperio_tx_fifo_size;
++			nptxfifosize.b.startaddr = params->dev_rx_fifo_size;
++
++			DWC_WRITE_REG32(&global_regs->gnptxfsiz,
++					nptxfifosize.d32);
++
++			DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
++				    DWC_READ_REG32(&global_regs->gnptxfsiz));
++
++			txfifosize.b.startaddr =
++			    nptxfifosize.b.startaddr + nptxfifosize.b.depth;
++
++			for (i = 0; i < core_if->hwcfg4.b.num_in_eps; i++) {
++
++				txfifosize.b.depth =
++				    params->dev_tx_fifo_size[i];
++
++				DWC_DEBUGPL(DBG_CIL,
++					    "initial dtxfsiz[%d]=%08x\n",
++					    i,
++					    DWC_READ_REG32(&global_regs->dtxfsiz
++							   [i]));
++
++#ifdef DWC_UTE_CFI
++				core_if->pwron_txfsiz[i] =
++				    (DWC_READ_REG32
++				     (&global_regs->dtxfsiz[i]) >> 16);
++				core_if->init_txfsiz[i] =
++				    params->dev_tx_fifo_size[i];
++#endif
++				DWC_WRITE_REG32(&global_regs->dtxfsiz[i],
++						txfifosize.d32);
++
++				DWC_DEBUGPL(DBG_CIL,
++					    "new dtxfsiz[%d]=%08x\n",
++					    i,
++					    DWC_READ_REG32(&global_regs->dtxfsiz
++							   [i]));
++
++				txfifosize.b.startaddr += txfifosize.b.depth;
++			}
++			if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
++				/* Calculating DFIFOCFG for Device mode to include RxFIFO and NPTXFIFO */
++				gdfifocfg.d32 = DWC_READ_REG32(&global_regs->gdfifocfg);
++				hwcfg3.d32 = DWC_READ_REG32(&global_regs->ghwcfg3);
++				gdfifocfg.b.gdfifocfg = (DWC_READ_REG32(&global_regs->ghwcfg3) >> 16);
++				DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
++				rxfsiz = (DWC_READ_REG32(&global_regs->grxfsiz) & 0x0000ffff);
++				nptxfsiz = (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
++				gdfifocfg.b.epinfobase = rxfsiz + nptxfsiz;
++				DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
++			}
++		}
++
++		/* Flush the FIFOs */
++		dwc_otg_flush_tx_fifo(core_if, 0x10);	/* all Tx FIFOs */
++		dwc_otg_flush_rx_fifo(core_if);
++
++		/* Flush the Learning Queue. */
++		resetctl.b.intknqflsh = 1;
++		DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
++
++		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable) {
++			core_if->start_predict = 0;
++			for (i = 0; i<= core_if->dev_if->num_in_eps; ++i) {
++				core_if->nextep_seq[i] = 0xff;	// 0xff - EP not active
++			}
++			core_if->nextep_seq[0] = 0;
++			core_if->first_in_nextep_seq = 0;
++			diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
++			diepctl.b.nextep = 0;
++			DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
++
++			/* Update IN Endpoint Mismatch Count by active IN NP EP count + 1 */
++			dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
++			dcfg.b.epmscnt = 2;
++			DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
++
++			DWC_DEBUGPL(DBG_CILV,"%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
++				__func__, core_if->first_in_nextep_seq);
++			for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
++				DWC_DEBUGPL(DBG_CILV, "%2d ", core_if->nextep_seq[i]);
++			}
++			DWC_DEBUGPL(DBG_CILV,"\n");
++		}
++
++		/* Clear all pending Device Interrupts */
++		/** @todo - if the condition needed to be checked
++		 *  or in any case all pending interrutps should be cleared?
++	     */
++		if (core_if->multiproc_int_enable) {
++			for (i = 0; i < core_if->dev_if->num_in_eps; ++i) {
++				DWC_WRITE_REG32(&dev_if->
++						dev_global_regs->diepeachintmsk[i], 0);
++			}
++		}
++
++		for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
++			DWC_WRITE_REG32(&dev_if->
++					dev_global_regs->doepeachintmsk[i], 0);
++		}
++
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->deachint, 0xFFFFFFFF);
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->deachintmsk, 0);
++	} else {
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->diepmsk, 0);
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->doepmsk, 0);
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->daint, 0xFFFFFFFF);
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->daintmsk, 0);
++	}
++
++	for (i = 0; i <= dev_if->num_in_eps; i++) {
++		depctl_data_t depctl;
++		depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++		if (depctl.b.epena) {
++			depctl.d32 = 0;
++			depctl.b.epdis = 1;
++			depctl.b.snak = 1;
++		} else {
++			depctl.d32 = 0;
++		}
++
++		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
++
++		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->dieptsiz, 0);
++		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepdma, 0);
++		DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepint, 0xFF);
++	}
++
++	for (i = 0; i <= dev_if->num_out_eps; i++) {
++		depctl_data_t depctl;
++		depctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
++		if (depctl.b.epena) {
++			dctl_data_t dctl = {.d32 = 0 };
++			gintmsk_data_t gintsts = {.d32 = 0 };
++			doepint_data_t doepint = {.d32 = 0 };
++			dctl.b.sgoutnak = 1;
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
++			do {
++				dwc_udelay(10);
++				gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++			} while (!gintsts.b.goutnakeff);
++			gintsts.d32 = 0;
++			gintsts.b.goutnakeff = 1;
++			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++			depctl.d32 = 0;
++			depctl.b.epdis = 1;
++			depctl.b.snak = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->doepctl, depctl.d32);
++			do {
++				dwc_udelay(10);
++				doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
++					out_ep_regs[i]->doepint);
++			} while (!doepint.b.epdisabled);
++
++			doepint.b.epdisabled = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[i]->doepint, doepint.d32);
++
++			dctl.d32 = 0;
++			dctl.b.cgoutnak = 1;
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
++		} else {
++			depctl.d32 = 0;
++		}
++
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, depctl.d32);
++
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doeptsiz, 0);
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepdma, 0);
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepint, 0xFF);
++	}
++
++	if (core_if->en_multiple_tx_fifo && core_if->dma_enable) {
++		dev_if->non_iso_tx_thr_en = params->thr_ctl & 0x1;
++		dev_if->iso_tx_thr_en = (params->thr_ctl >> 1) & 0x1;
++		dev_if->rx_thr_en = (params->thr_ctl >> 2) & 0x1;
++
++		dev_if->rx_thr_length = params->rx_thr_length;
++		dev_if->tx_thr_length = params->tx_thr_length;
++
++		dev_if->setup_desc_index = 0;
++
++		dthrctl.d32 = 0;
++		dthrctl.b.non_iso_thr_en = dev_if->non_iso_tx_thr_en;
++		dthrctl.b.iso_thr_en = dev_if->iso_tx_thr_en;
++		dthrctl.b.tx_thr_len = dev_if->tx_thr_length;
++		dthrctl.b.rx_thr_en = dev_if->rx_thr_en;
++		dthrctl.b.rx_thr_len = dev_if->rx_thr_length;
++		dthrctl.b.ahb_thr_ratio = params->ahb_thr_ratio;
++
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->dtknqr3_dthrctl,
++				dthrctl.d32);
++
++		DWC_DEBUGPL(DBG_CIL,
++			    "Non ISO Tx Thr - %d\nISO Tx Thr - %d\nRx Thr - %d\nTx Thr Len - %d\nRx Thr Len - %d\n",
++			    dthrctl.b.non_iso_thr_en, dthrctl.b.iso_thr_en,
++			    dthrctl.b.rx_thr_en, dthrctl.b.tx_thr_len,
++			    dthrctl.b.rx_thr_len);
++
++	}
++
++	dwc_otg_enable_device_interrupts(core_if);
++
++	{
++		diepmsk_data_t msk = {.d32 = 0 };
++		msk.b.txfifoundrn = 1;
++		if (core_if->multiproc_int_enable) {
++			DWC_MODIFY_REG32(&dev_if->dev_global_regs->
++					 diepeachintmsk[0], msk.d32, msk.d32);
++		} else {
++			DWC_MODIFY_REG32(&dev_if->dev_global_regs->diepmsk,
++					 msk.d32, msk.d32);
++		}
++	}
++
++	if (core_if->multiproc_int_enable) {
++		/* Set NAK on Babble */
++		dctl_data_t dctl = {.d32 = 0 };
++		dctl.b.nakonbble = 1;
++		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, 0, dctl.d32);
++	}
++
++	if (core_if->snpsid >= OTG_CORE_REV_2_94a) {
++		dctl_data_t dctl = {.d32 = 0 };
++		dctl.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dctl);
++		dctl.b.sftdiscon = 0;
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->dctl, dctl.d32);
++	}
++}
++
++/**
++ * This function enables the Host mode interrupts.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ */
++void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_CIL, "%s(%p)\n", __func__, core_if);
++
++	/* Disable all interrupts. */
++	DWC_WRITE_REG32(&global_regs->gintmsk, 0);
++
++	/* Clear any pending interrupts. */
++	DWC_WRITE_REG32(&global_regs->gintsts, 0xFFFFFFFF);
++
++	/* Enable the common interrupts */
++	dwc_otg_enable_common_interrupts(core_if);
++
++	/*
++	 * Enable host mode interrupts without disturbing common
++	 * interrupts.
++	 */
++
++	intr_mask.b.disconnect = 1;
++	intr_mask.b.portintr = 1;
++	intr_mask.b.hcintr = 1;
++
++	DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
++}
++
++/**
++ * This function disables the Host Mode interrupts.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ */
++void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_CILV, "%s()\n", __func__);
++
++	/*
++	 * Disable host mode interrupts without disturbing common
++	 * interrupts.
++	 */
++	intr_mask.b.sofintr = 1;
++	intr_mask.b.portintr = 1;
++	intr_mask.b.hcintr = 1;
++	intr_mask.b.ptxfempty = 1;
++	intr_mask.b.nptxfempty = 1;
++
++	DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32, 0);
++}
++
++/**
++ * This function initializes the DWC_otg controller registers for
++ * host mode.
++ *
++ * This function flushes the Tx and Rx FIFOs and it flushes any entries in the
++ * request queues. Host channels are reset to ensure that they are ready for
++ * performing transfers.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ *
++ */
++void dwc_otg_core_host_init(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	dwc_otg_host_if_t *host_if = core_if->host_if;
++	dwc_otg_core_params_t *params = core_if->core_params;
++	hprt0_data_t hprt0 = {.d32 = 0 };
++	fifosize_data_t nptxfifosize;
++	fifosize_data_t ptxfifosize;
++	uint16_t rxfsiz, nptxfsiz, hptxfsiz;
++	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
++	int i;
++	hcchar_data_t hcchar;
++	hcfg_data_t hcfg;
++	hfir_data_t hfir;
++	dwc_otg_hc_regs_t *hc_regs;
++	int num_channels;
++	gotgctl_data_t gotgctl = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_CILV, "%s(%p)\n", __func__, core_if);
++
++	/* Restart the Phy Clock */
++	DWC_WRITE_REG32(core_if->pcgcctl, 0);
++
++	/* Initialize Host Configuration Register */
++	init_fslspclksel(core_if);
++	if (core_if->core_params->speed == DWC_SPEED_PARAM_FULL) {
++		hcfg.d32 = DWC_READ_REG32(&host_if->host_global_regs->hcfg);
++		hcfg.b.fslssupp = 1;
++		DWC_WRITE_REG32(&host_if->host_global_regs->hcfg, hcfg.d32);
++
++	}
++
++	/* This bit allows dynamic reloading of the HFIR register
++	 * during runtime. This bit needs to be programmed during
++	 * initial configuration and its value must not be changed
++	 * during runtime.*/
++	if (core_if->core_params->reload_ctl == 1) {
++		hfir.d32 = DWC_READ_REG32(&host_if->host_global_regs->hfir);
++		hfir.b.hfirrldctrl = 1;
++		DWC_WRITE_REG32(&host_if->host_global_regs->hfir, hfir.d32);
++	}
++
++	if (core_if->core_params->dma_desc_enable) {
++		uint8_t op_mode = core_if->hwcfg2.b.op_mode;
++		if (!
++		    (core_if->hwcfg4.b.desc_dma
++		     && (core_if->snpsid >= OTG_CORE_REV_2_90a)
++		     && ((op_mode == DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
++			 || (op_mode == DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
++			 || (op_mode ==
++			     DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG)
++			 || (op_mode == DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)
++			 || (op_mode ==
++			     DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST)))) {
++
++			DWC_ERROR("Host can't operate in Descriptor DMA mode.\n"
++				  "Either core version is below 2.90a or "
++				  "GHWCFG2, GHWCFG4 registers' values do not allow Descriptor DMA in host mode.\n"
++				  "To run the driver in Buffer DMA host mode set dma_desc_enable "
++				  "module parameter to 0.\n");
++			return;
++		}
++		hcfg.d32 = DWC_READ_REG32(&host_if->host_global_regs->hcfg);
++		hcfg.b.descdma = 1;
++		DWC_WRITE_REG32(&host_if->host_global_regs->hcfg, hcfg.d32);
++	}
++
++	/* Configure data FIFO sizes */
++	if (core_if->hwcfg2.b.dynamic_fifo && params->enable_dynamic_fifo) {
++		DWC_DEBUGPL(DBG_CIL, "Total FIFO Size=%d\n",
++			    core_if->total_fifo_size);
++		DWC_DEBUGPL(DBG_CIL, "Rx FIFO Size=%d\n",
++			    params->host_rx_fifo_size);
++		DWC_DEBUGPL(DBG_CIL, "NP Tx FIFO Size=%d\n",
++			    params->host_nperio_tx_fifo_size);
++		DWC_DEBUGPL(DBG_CIL, "P Tx FIFO Size=%d\n",
++			    params->host_perio_tx_fifo_size);
++
++		/* Rx FIFO */
++		DWC_DEBUGPL(DBG_CIL, "initial grxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->grxfsiz));
++		DWC_WRITE_REG32(&global_regs->grxfsiz,
++				params->host_rx_fifo_size);
++		DWC_DEBUGPL(DBG_CIL, "new grxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->grxfsiz));
++
++		/* Non-periodic Tx FIFO */
++		DWC_DEBUGPL(DBG_CIL, "initial gnptxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->gnptxfsiz));
++		nptxfifosize.b.depth = params->host_nperio_tx_fifo_size;
++		nptxfifosize.b.startaddr = params->host_rx_fifo_size;
++		DWC_WRITE_REG32(&global_regs->gnptxfsiz, nptxfifosize.d32);
++		DWC_DEBUGPL(DBG_CIL, "new gnptxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->gnptxfsiz));
++
++		/* Periodic Tx FIFO */
++		DWC_DEBUGPL(DBG_CIL, "initial hptxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->hptxfsiz));
++		ptxfifosize.b.depth = params->host_perio_tx_fifo_size;
++		ptxfifosize.b.startaddr =
++		    nptxfifosize.b.startaddr + nptxfifosize.b.depth;
++		DWC_WRITE_REG32(&global_regs->hptxfsiz, ptxfifosize.d32);
++		DWC_DEBUGPL(DBG_CIL, "new hptxfsiz=%08x\n",
++			    DWC_READ_REG32(&global_regs->hptxfsiz));
++
++		if (core_if->en_multiple_tx_fifo
++		    && core_if->snpsid <= OTG_CORE_REV_2_94a) {
++			/* Global DFIFOCFG calculation for Host mode - include RxFIFO, NPTXFIFO and HPTXFIFO */
++			gdfifocfg.d32 = DWC_READ_REG32(&global_regs->gdfifocfg);
++			rxfsiz = (DWC_READ_REG32(&global_regs->grxfsiz) & 0x0000ffff);
++			nptxfsiz = (DWC_READ_REG32(&global_regs->gnptxfsiz) >> 16);
++			hptxfsiz = (DWC_READ_REG32(&global_regs->hptxfsiz) >> 16);
++			gdfifocfg.b.epinfobase = rxfsiz + nptxfsiz + hptxfsiz;
++			DWC_WRITE_REG32(&global_regs->gdfifocfg, gdfifocfg.d32);
++		}
++	}
++
++	/* TODO - check this */
++	/* Clear Host Set HNP Enable in the OTG Control Register */
++	gotgctl.b.hstsethnpen = 1;
++	DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
++	/* Make sure the FIFOs are flushed. */
++	dwc_otg_flush_tx_fifo(core_if, 0x10 /* all TX FIFOs */ );
++	dwc_otg_flush_rx_fifo(core_if);
++
++	/* Clear Host Set HNP Enable in the OTG Control Register */
++	gotgctl.b.hstsethnpen = 1;
++	DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
++
++	if (!core_if->core_params->dma_desc_enable) {
++		/* Flush out any leftover queued requests. */
++		num_channels = core_if->core_params->host_channels;
++
++		for (i = 0; i < num_channels; i++) {
++			hc_regs = core_if->host_if->hc_regs[i];
++			hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++			hcchar.b.chen = 0;
++			hcchar.b.chdis = 1;
++			hcchar.b.epdir = 0;
++			DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++		}
++
++		/* Halt all channels to put them into a known state. */
++		for (i = 0; i < num_channels; i++) {
++			int count = 0;
++			hc_regs = core_if->host_if->hc_regs[i];
++			hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++			hcchar.b.chen = 1;
++			hcchar.b.chdis = 1;
++			hcchar.b.epdir = 0;
++			DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++			DWC_DEBUGPL(DBG_HCDV, "%s: Halt channel %d regs %p\n", __func__, i, hc_regs);
++			do {
++				hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++				if (++count > 1000) {
++					DWC_ERROR
++					    ("%s: Unable to clear halt on channel %d (timeout HCCHAR 0x%X @%p)\n",
++					     __func__, i, hcchar.d32, &hc_regs->hcchar);
++					break;
++				}
++				dwc_udelay(1);
++			} while (hcchar.b.chen);
++		}
++	}
++
++	/* Turn on the vbus power. */
++	DWC_PRINTF("Init: Port Power? op_state=%d\n", core_if->op_state);
++	if (core_if->op_state == A_HOST) {
++		hprt0.d32 = dwc_otg_read_hprt0(core_if);
++		DWC_PRINTF("Init: Power Port (%d)\n", hprt0.b.prtpwr);
++		if (hprt0.b.prtpwr == 0) {
++			hprt0.b.prtpwr = 1;
++			DWC_WRITE_REG32(host_if->hprt0, hprt0.d32);
++		}
++	}
++
++	dwc_otg_enable_host_interrupts(core_if);
++}
++
++/**
++ * Prepares a host channel for transferring packets to/from a specific
++ * endpoint. The HCCHARn register is set up with the characteristics specified
++ * in _hc. Host channel interrupts that may need to be serviced while this
++ * transfer is in progress are enabled.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ * @param hc Information needed to initialize the host channel
++ */
++void dwc_otg_hc_init(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
++{
++	hcintmsk_data_t hc_intr_mask;
++	hcchar_data_t hcchar;
++	hcsplt_data_t hcsplt;
++
++	uint8_t hc_num = hc->hc_num;
++	dwc_otg_host_if_t *host_if = core_if->host_if;
++	dwc_otg_hc_regs_t *hc_regs = host_if->hc_regs[hc_num];
++
++	/* Clear old interrupt conditions for this host channel. */
++	hc_intr_mask.d32 = 0xFFFFFFFF;
++	hc_intr_mask.b.reserved14_31 = 0;
++	DWC_WRITE_REG32(&hc_regs->hcint, hc_intr_mask.d32);
++
++	/* Enable channel interrupts required for this transfer. */
++	hc_intr_mask.d32 = 0;
++	hc_intr_mask.b.chhltd = 1;
++	if (core_if->dma_enable) {
++		/* For Descriptor DMA mode core halts the channel on AHB error. Interrupt is not required */
++		if (!core_if->dma_desc_enable)
++			hc_intr_mask.b.ahberr = 1;
++		else {
++			if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
++				hc_intr_mask.b.xfercompl = 1;
++		}
++
++		if (hc->error_state && !hc->do_split &&
++		    hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
++			hc_intr_mask.b.ack = 1;
++			if (hc->ep_is_in) {
++				hc_intr_mask.b.datatglerr = 1;
++				if (hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
++					hc_intr_mask.b.nak = 1;
++				}
++			}
++		}
++	} else {
++		switch (hc->ep_type) {
++		case DWC_OTG_EP_TYPE_CONTROL:
++		case DWC_OTG_EP_TYPE_BULK:
++			hc_intr_mask.b.xfercompl = 1;
++			hc_intr_mask.b.stall = 1;
++			hc_intr_mask.b.xacterr = 1;
++			hc_intr_mask.b.datatglerr = 1;
++			if (hc->ep_is_in) {
++				hc_intr_mask.b.bblerr = 1;
++			} else {
++				hc_intr_mask.b.nak = 1;
++				hc_intr_mask.b.nyet = 1;
++				if (hc->do_ping) {
++					hc_intr_mask.b.ack = 1;
++				}
++			}
++
++			if (hc->do_split) {
++				hc_intr_mask.b.nak = 1;
++				if (hc->complete_split) {
++					hc_intr_mask.b.nyet = 1;
++				} else {
++					hc_intr_mask.b.ack = 1;
++				}
++			}
++
++			if (hc->error_state) {
++				hc_intr_mask.b.ack = 1;
++			}
++			break;
++		case DWC_OTG_EP_TYPE_INTR:
++			hc_intr_mask.b.xfercompl = 1;
++			hc_intr_mask.b.nak = 1;
++			hc_intr_mask.b.stall = 1;
++			hc_intr_mask.b.xacterr = 1;
++			hc_intr_mask.b.datatglerr = 1;
++			hc_intr_mask.b.frmovrun = 1;
++
++			if (hc->ep_is_in) {
++				hc_intr_mask.b.bblerr = 1;
++			}
++			if (hc->error_state) {
++				hc_intr_mask.b.ack = 1;
++			}
++			if (hc->do_split) {
++				if (hc->complete_split) {
++					hc_intr_mask.b.nyet = 1;
++				} else {
++					hc_intr_mask.b.ack = 1;
++				}
++			}
++			break;
++		case DWC_OTG_EP_TYPE_ISOC:
++			hc_intr_mask.b.xfercompl = 1;
++			hc_intr_mask.b.frmovrun = 1;
++			hc_intr_mask.b.ack = 1;
++
++			if (hc->ep_is_in) {
++				hc_intr_mask.b.xacterr = 1;
++				hc_intr_mask.b.bblerr = 1;
++			}
++			break;
++		}
++	}
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, hc_intr_mask.d32);
++
++	/*
++	 * Program the HCCHARn register with the endpoint characteristics for
++	 * the current transfer.
++	 */
++	hcchar.d32 = 0;
++	hcchar.b.devaddr = hc->dev_addr;
++	hcchar.b.epnum = hc->ep_num;
++	hcchar.b.epdir = hc->ep_is_in;
++	hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
++	hcchar.b.eptype = hc->ep_type;
++	hcchar.b.mps = hc->max_packet;
++
++	DWC_WRITE_REG32(&host_if->hc_regs[hc_num]->hcchar, hcchar.d32);
++
++	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d, Dev Addr %d, EP #%d\n",
++                    __func__, hc->hc_num, hcchar.b.devaddr, hcchar.b.epnum);
++	DWC_DEBUGPL(DBG_HCDV, "	 Is In %d, Is Low Speed %d, EP Type %d, "
++                                "Max Pkt %d, Multi Cnt %d\n",
++                    hcchar.b.epdir, hcchar.b.lspddev, hcchar.b.eptype,
++                    hcchar.b.mps, hcchar.b.multicnt);
++
++	/*
++	 * Program the HCSPLIT register for SPLITs
++	 */
++	hcsplt.d32 = 0;
++	if (hc->do_split) {
++		DWC_DEBUGPL(DBG_HCDV, "Programming HC %d with split --> %s\n",
++			    hc->hc_num,
++			    hc->complete_split ? "CSPLIT" : "SSPLIT");
++		hcsplt.b.compsplt = hc->complete_split;
++		hcsplt.b.xactpos = hc->xact_pos;
++		hcsplt.b.hubaddr = hc->hub_addr;
++		hcsplt.b.prtaddr = hc->port_addr;
++		DWC_DEBUGPL(DBG_HCDV, "\t  comp split %d\n", hc->complete_split);
++		DWC_DEBUGPL(DBG_HCDV, "\t  xact pos %d\n", hc->xact_pos);
++		DWC_DEBUGPL(DBG_HCDV, "\t  hub addr %d\n", hc->hub_addr);
++		DWC_DEBUGPL(DBG_HCDV, "\t  port addr %d\n", hc->port_addr);
++		DWC_DEBUGPL(DBG_HCDV, "\t  is_in %d\n", hc->ep_is_in);
++		DWC_DEBUGPL(DBG_HCDV, "\t  Max Pkt: %d\n", hcchar.b.mps);
++		DWC_DEBUGPL(DBG_HCDV, "\t  xferlen: %d\n", hc->xfer_len);
++	}
++	DWC_WRITE_REG32(&host_if->hc_regs[hc_num]->hcsplt, hcsplt.d32);
++
++}
++
++/**
++ * Attempts to halt a host channel. This function should only be called in
++ * Slave mode or to abort a transfer in either Slave mode or DMA mode. Under
++ * normal circumstances in DMA mode, the controller halts the channel when the
++ * transfer is complete or a condition occurs that requires application
++ * intervention.
++ *
++ * In slave mode, checks for a free request queue entry, then sets the Channel
++ * Enable and Channel Disable bits of the Host Channel Characteristics
++ * register of the specified channel to intiate the halt. If there is no free
++ * request queue entry, sets only the Channel Disable bit of the HCCHARn
++ * register to flush requests for this channel. In the latter case, sets a
++ * flag to indicate that the host channel needs to be halted when a request
++ * queue slot is open.
++ *
++ * In DMA mode, always sets the Channel Enable and Channel Disable bits of the
++ * HCCHARn register. The controller ensures there is space in the request
++ * queue before submitting the halt request.
++ *
++ * Some time may elapse before the core flushes any posted requests for this
++ * host channel and halts. The Channel Halted interrupt handler completes the
++ * deactivation of the host channel.
++ *
++ * @param core_if Controller register interface.
++ * @param hc Host channel to halt.
++ * @param halt_status Reason for halting the channel.
++ */
++void dwc_otg_hc_halt(dwc_otg_core_if_t * core_if,
++		     dwc_hc_t * hc, dwc_otg_halt_status_e halt_status)
++{
++	gnptxsts_data_t nptxsts;
++	hptxsts_data_t hptxsts;
++	hcchar_data_t hcchar;
++	dwc_otg_hc_regs_t *hc_regs;
++	dwc_otg_core_global_regs_t *global_regs;
++	dwc_otg_host_global_regs_t *host_global_regs;
++
++	hc_regs = core_if->host_if->hc_regs[hc->hc_num];
++	global_regs = core_if->core_global_regs;
++	host_global_regs = core_if->host_if->host_global_regs;
++
++	DWC_ASSERT(!(halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS),
++		   "halt_status = %d\n", halt_status);
++
++	if (halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
++	    halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
++		/*
++		 * Disable all channel interrupts except Ch Halted. The QTD
++		 * and QH state associated with this transfer has been cleared
++		 * (in the case of URB_DEQUEUE), so the channel needs to be
++		 * shut down carefully to prevent crashes.
++		 */
++		hcintmsk_data_t hcintmsk;
++		hcintmsk.d32 = 0;
++		hcintmsk.b.chhltd = 1;
++		DWC_WRITE_REG32(&hc_regs->hcintmsk, hcintmsk.d32);
++
++		/*
++		 * Make sure no other interrupts besides halt are currently
++		 * pending. Handling another interrupt could cause a crash due
++		 * to the QTD and QH state.
++		 */
++		DWC_WRITE_REG32(&hc_regs->hcint, ~hcintmsk.d32);
++
++		/*
++		 * Make sure the halt status is set to URB_DEQUEUE or AHB_ERR
++		 * even if the channel was already halted for some other
++		 * reason.
++		 */
++		hc->halt_status = halt_status;
++
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++		if (hcchar.b.chen == 0) {
++			/*
++			 * The channel is either already halted or it hasn't
++			 * started yet. In DMA mode, the transfer may halt if
++			 * it finishes normally or a condition occurs that
++			 * requires driver intervention. Don't want to halt
++			 * the channel again. In either Slave or DMA mode,
++			 * it's possible that the transfer has been assigned
++			 * to a channel, but not started yet when an URB is
++			 * dequeued. Don't want to halt a channel that hasn't
++			 * started yet.
++			 */
++			return;
++		}
++	}
++	if (hc->halt_pending) {
++		/*
++		 * A halt has already been issued for this channel. This might
++		 * happen when a transfer is aborted by a higher level in
++		 * the stack.
++		 */
++#ifdef DEBUG
++		DWC_PRINTF
++		    ("*** %s: Channel %d, _hc->halt_pending already set ***\n",
++		     __func__, hc->hc_num);
++
++#endif
++		return;
++	}
++
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++	/* No need to set the bit in DDMA for disabling the channel */
++	//TODO check it everywhere channel is disabled
++	if (!core_if->core_params->dma_desc_enable)
++		hcchar.b.chen = 1;
++	hcchar.b.chdis = 1;
++
++	if (!core_if->dma_enable) {
++		/* Check for space in the request queue to issue the halt. */
++		if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
++		    hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
++			nptxsts.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
++			if (nptxsts.b.nptxqspcavail == 0) {
++				hcchar.b.chen = 0;
++			}
++		} else {
++			hptxsts.d32 =
++			    DWC_READ_REG32(&host_global_regs->hptxsts);
++			if ((hptxsts.b.ptxqspcavail == 0)
++			    || (core_if->queuing_high_bandwidth)) {
++				hcchar.b.chen = 0;
++			}
++		}
++	}
++	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++
++	hc->halt_status = halt_status;
++
++	if (hcchar.b.chen) {
++		hc->halt_pending = 1;
++		hc->halt_on_queue = 0;
++	} else {
++		hc->halt_on_queue = 1;
++	}
++
++	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
++	DWC_DEBUGPL(DBG_HCDV, "	 hcchar: 0x%08x\n", hcchar.d32);
++	DWC_DEBUGPL(DBG_HCDV, "	 halt_pending: %d\n", hc->halt_pending);
++	DWC_DEBUGPL(DBG_HCDV, "	 halt_on_queue: %d\n", hc->halt_on_queue);
++	DWC_DEBUGPL(DBG_HCDV, "	 halt_status: %d\n", hc->halt_status);
++
++	return;
++}
++
++/**
++ * Clears the transfer state for a host channel. This function is normally
++ * called after a transfer is done and the host channel is being released.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param hc Identifies the host channel to clean up.
++ */
++void dwc_otg_hc_cleanup(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
++{
++	dwc_otg_hc_regs_t *hc_regs;
++
++	hc->xfer_started = 0;
++
++	/*
++	 * Clear channel interrupt enables and any unhandled channel interrupt
++	 * conditions.
++	 */
++	hc_regs = core_if->host_if->hc_regs[hc->hc_num];
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0);
++	DWC_WRITE_REG32(&hc_regs->hcint, 0xFFFFFFFF);
++#ifdef DEBUG
++	DWC_TIMER_CANCEL(core_if->hc_xfer_timer[hc->hc_num]);
++#endif
++}
++
++/**
++ * Sets the channel property that indicates in which frame a periodic transfer
++ * should occur. This is always set to the _next_ frame. This function has no
++ * effect on non-periodic transfers.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param hc Identifies the host channel to set up and its properties.
++ * @param hcchar Current value of the HCCHAR register for the specified host
++ * channel.
++ */
++static inline void hc_set_even_odd_frame(dwc_otg_core_if_t * core_if,
++					 dwc_hc_t * hc, hcchar_data_t * hcchar)
++{
++	if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
++	    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++		hfnum_data_t hfnum;
++		hfnum.d32 =
++		    DWC_READ_REG32(&core_if->host_if->host_global_regs->hfnum);
++
++		/* 1 if _next_ frame is odd, 0 if it's even */
++		hcchar->b.oddfrm = (hfnum.b.frnum & 0x1) ? 0 : 1;
++#ifdef DEBUG
++		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR && hc->do_split
++		    && !hc->complete_split) {
++			switch (hfnum.b.frnum & 0x7) {
++			case 7:
++				core_if->hfnum_7_samples++;
++				core_if->hfnum_7_frrem_accum += hfnum.b.frrem;
++				break;
++			case 0:
++				core_if->hfnum_0_samples++;
++				core_if->hfnum_0_frrem_accum += hfnum.b.frrem;
++				break;
++			default:
++				core_if->hfnum_other_samples++;
++				core_if->hfnum_other_frrem_accum +=
++				    hfnum.b.frrem;
++				break;
++			}
++		}
++#endif
++	}
++}
++
++#ifdef DEBUG
++void hc_xfer_timeout(void *ptr)
++{
++	hc_xfer_info_t *xfer_info = NULL;
++	int hc_num = 0;
++
++	if (ptr)
++		xfer_info = (hc_xfer_info_t *) ptr;
++
++	if (!xfer_info->hc) {
++		DWC_ERROR("xfer_info->hc = %p\n", xfer_info->hc);
++		return;
++	}
++
++	hc_num = xfer_info->hc->hc_num;
++	DWC_WARN("%s: timeout on channel %d\n", __func__, hc_num);
++	DWC_WARN("	start_hcchar_val 0x%08x\n",
++		 xfer_info->core_if->start_hcchar_val[hc_num]);
++}
++#endif
++
++void ep_xfer_timeout(void *ptr)
++{
++	ep_xfer_info_t *xfer_info = NULL;
++	int ep_num = 0;
++	dctl_data_t dctl = {.d32 = 0 };
++	gintsts_data_t gintsts = {.d32 = 0 };
++	gintmsk_data_t gintmsk = {.d32 = 0 };
++
++	if (ptr)
++		xfer_info = (ep_xfer_info_t *) ptr;
++
++	if (!xfer_info->ep) {
++		DWC_ERROR("xfer_info->ep = %p\n", xfer_info->ep);
++		return;
++	}
++
++	ep_num = xfer_info->ep->num;
++	DWC_WARN("%s: timeout on endpoit %d\n", __func__, ep_num);
++	/* Put the sate to 2 as it was time outed */
++	xfer_info->state = 2;
++
++	dctl.d32 =
++	    DWC_READ_REG32(&xfer_info->core_if->dev_if->dev_global_regs->dctl);
++	gintsts.d32 =
++	    DWC_READ_REG32(&xfer_info->core_if->core_global_regs->gintsts);
++	gintmsk.d32 =
++	    DWC_READ_REG32(&xfer_info->core_if->core_global_regs->gintmsk);
++
++	if (!gintmsk.b.goutnakeff) {
++		/* Unmask it */
++		gintmsk.b.goutnakeff = 1;
++		DWC_WRITE_REG32(&xfer_info->core_if->core_global_regs->gintmsk,
++				gintmsk.d32);
++
++	}
++
++	if (!gintsts.b.goutnakeff) {
++		dctl.b.sgoutnak = 1;
++	}
++	DWC_WRITE_REG32(&xfer_info->core_if->dev_if->dev_global_regs->dctl,
++			dctl.d32);
++
++}
++
++void set_pid_isoc(dwc_hc_t * hc)
++{
++	/* Set up the initial PID for the transfer. */
++	if (hc->speed == DWC_OTG_EP_SPEED_HIGH) {
++		if (hc->ep_is_in) {
++			if (hc->multi_count == 1) {
++				hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
++			} else if (hc->multi_count == 2) {
++				hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
++			} else {
++				hc->data_pid_start = DWC_OTG_HC_PID_DATA2;
++			}
++		} else {
++			if (hc->multi_count == 1) {
++				hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
++			} else {
++				hc->data_pid_start = DWC_OTG_HC_PID_MDATA;
++			}
++		}
++	} else {
++		hc->data_pid_start = DWC_OTG_HC_PID_DATA0;
++	}
++}
++
++/**
++ * This function does the setup for a data transfer for a host channel and
++ * starts the transfer. May be called in either Slave mode or DMA mode. In
++ * Slave mode, the caller must ensure that there is sufficient space in the
++ * request queue and Tx Data FIFO.
++ *
++ * For an OUT transfer in Slave mode, it loads a data packet into the
++ * appropriate FIFO. If necessary, additional data packets will be loaded in
++ * the Host ISR.
++ *
++ * For an IN transfer in Slave mode, a data packet is requested. The data
++ * packets are unloaded from the Rx FIFO in the Host ISR. If necessary,
++ * additional data packets are requested in the Host ISR.
++ *
++ * For a PING transfer in Slave mode, the Do Ping bit is set in the HCTSIZ
++ * register along with a packet count of 1 and the channel is enabled. This
++ * causes a single PING transaction to occur. Other fields in HCTSIZ are
++ * simply set to 0 since no data transfer occurs in this case.
++ *
++ * For a PING transfer in DMA mode, the HCTSIZ register is initialized with
++ * all the information required to perform the subsequent data transfer. In
++ * addition, the Do Ping bit is set in the HCTSIZ register. In this case, the
++ * controller performs the entire PING protocol, then starts the data
++ * transfer.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param hc Information needed to initialize the host channel. The xfer_len
++ * value may be reduced to accommodate the max widths of the XferSize and
++ * PktCnt fields in the HCTSIZn register. The multi_count value may be changed
++ * to reflect the final xfer_len value.
++ */
++void dwc_otg_hc_start_transfer(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
++{
++	hcchar_data_t hcchar;
++	hctsiz_data_t hctsiz;
++	uint16_t num_packets;
++	uint32_t max_hc_xfer_size = core_if->core_params->max_transfer_size;
++	uint16_t max_hc_pkt_count = core_if->core_params->max_packet_count;
++	dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
++
++	hctsiz.d32 = 0;
++
++	if (hc->do_ping) {
++		if (!core_if->dma_enable) {
++			dwc_otg_hc_do_ping(core_if, hc);
++			hc->xfer_started = 1;
++			return;
++		} else {
++			hctsiz.b.dopng = 1;
++		}
++	}
++
++	if (hc->do_split) {
++		num_packets = 1;
++
++		if (hc->complete_split && !hc->ep_is_in) {
++			/* For CSPLIT OUT Transfer, set the size to 0 so the
++			 * core doesn't expect any data written to the FIFO */
++			hc->xfer_len = 0;
++		} else if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
++			hc->xfer_len = hc->max_packet;
++		} else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
++			hc->xfer_len = 188;
++		}
++
++		hctsiz.b.xfersize = hc->xfer_len;
++	} else {
++		/*
++		 * Ensure that the transfer length and packet count will fit
++		 * in the widths allocated for them in the HCTSIZn register.
++		 */
++		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
++		    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++			/*
++			 * Make sure the transfer size is no larger than one
++			 * (micro)frame's worth of data. (A check was done
++			 * when the periodic transfer was accepted to ensure
++			 * that a (micro)frame's worth of data can be
++			 * programmed into a channel.)
++			 */
++			uint32_t max_periodic_len =
++			    hc->multi_count * hc->max_packet;
++			if (hc->xfer_len > max_periodic_len) {
++				hc->xfer_len = max_periodic_len;
++			} else {
++			}
++		} else if (hc->xfer_len > max_hc_xfer_size) {
++			/* Make sure that xfer_len is a multiple of max packet size. */
++			hc->xfer_len = max_hc_xfer_size - hc->max_packet + 1;
++		}
++
++		if (hc->xfer_len > 0) {
++			num_packets =
++			    (hc->xfer_len + hc->max_packet -
++			     1) / hc->max_packet;
++			if (num_packets > max_hc_pkt_count) {
++				num_packets = max_hc_pkt_count;
++				hc->xfer_len = num_packets * hc->max_packet;
++			}
++		} else {
++			/* Need 1 packet for transfer length of 0. */
++			num_packets = 1;
++		}
++
++		if (hc->ep_is_in) {
++			/* Always program an integral # of max packets for IN transfers. */
++			hc->xfer_len = num_packets * hc->max_packet;
++		}
++
++		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
++		    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++			/*
++			 * Make sure that the multi_count field matches the
++			 * actual transfer length.
++			 */
++			hc->multi_count = num_packets;
++		}
++
++		if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
++			set_pid_isoc(hc);
++
++		hctsiz.b.xfersize = hc->xfer_len;
++	}
++
++	hc->start_pkt_count = num_packets;
++	hctsiz.b.pktcnt = num_packets;
++	hctsiz.b.pid = hc->data_pid_start;
++	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
++
++	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
++	DWC_DEBUGPL(DBG_HCDV, "	 Xfer Size: %d\n", hctsiz.b.xfersize);
++	DWC_DEBUGPL(DBG_HCDV, "	 Num Pkts: %d\n", hctsiz.b.pktcnt);
++	DWC_DEBUGPL(DBG_HCDV, "	 Start PID: %d\n", hctsiz.b.pid);
++
++	if (core_if->dma_enable) {
++		dwc_dma_t dma_addr;
++		if (hc->align_buff) {
++			dma_addr = hc->align_buff;
++		} else {
++			dma_addr = ((unsigned long)hc->xfer_buff & 0xffffffff);
++		}
++		DWC_WRITE_REG32(&hc_regs->hcdma, dma_addr);
++	}
++
++	/* Start the split */
++	if (hc->do_split) {
++		hcsplt_data_t hcsplt;
++		hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
++		hcsplt.b.spltena = 1;
++		DWC_WRITE_REG32(&hc_regs->hcsplt, hcsplt.d32);
++	}
++
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	hcchar.b.multicnt = hc->multi_count;
++	hc_set_even_odd_frame(core_if, hc, &hcchar);
++#ifdef DEBUG
++	core_if->start_hcchar_val[hc->hc_num] = hcchar.d32;
++	if (hcchar.b.chdis) {
++		DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
++			 __func__, hc->hc_num, hcchar.d32);
++	}
++#endif
++
++	/* Set host channel enable after all other setup is complete. */
++	hcchar.b.chen = 1;
++	hcchar.b.chdis = 0;
++	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++
++	hc->xfer_started = 1;
++	hc->requests++;
++
++	if (!core_if->dma_enable && !hc->ep_is_in && hc->xfer_len > 0) {
++		/* Load OUT packet into the appropriate Tx FIFO. */
++		dwc_otg_hc_write_packet(core_if, hc);
++	}
++#ifdef DEBUG
++	if (hc->ep_type != DWC_OTG_EP_TYPE_INTR) {
++                DWC_DEBUGPL(DBG_HCDV, "transfer %d from core_if %p\n",
++                            hc->hc_num, core_if);//GRAYG
++		core_if->hc_xfer_info[hc->hc_num].core_if = core_if;
++		core_if->hc_xfer_info[hc->hc_num].hc = hc;
++
++		/* Start a timer for this transfer. */
++		DWC_TIMER_SCHEDULE(core_if->hc_xfer_timer[hc->hc_num], 10000);
++	}
++#endif
++}
++
++/**
++ * This function does the setup for a data transfer for a host channel
++ * and starts the transfer in Descriptor DMA mode.
++ *
++ * Initializes HCTSIZ register. For a PING transfer the Do Ping bit is set.
++ * Sets PID and NTD values. For periodic transfers
++ * initializes SCHED_INFO field with micro-frame bitmap.
++ *
++ * Initializes HCDMA register with descriptor list address and CTD value
++ * then starts the transfer via enabling the channel.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param hc Information needed to initialize the host channel.
++ */
++void dwc_otg_hc_start_transfer_ddma(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
++{
++	dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
++	hcchar_data_t hcchar;
++	hctsiz_data_t hctsiz;
++	hcdma_data_t hcdma;
++
++	hctsiz.d32 = 0;
++
++	if (hc->do_ping)
++		hctsiz.b_ddma.dopng = 1;
++
++	if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
++		set_pid_isoc(hc);
++
++	/* Packet Count and Xfer Size are not used in Descriptor DMA mode */
++	hctsiz.b_ddma.pid = hc->data_pid_start;
++	hctsiz.b_ddma.ntd = hc->ntd - 1;	/* 0 - 1 descriptor, 1 - 2 descriptors, etc. */
++	hctsiz.b_ddma.schinfo = hc->schinfo;	/* Non-zero only for high-speed interrupt endpoints */
++
++	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
++	DWC_DEBUGPL(DBG_HCDV, "	 Start PID: %d\n", hctsiz.b.pid);
++	DWC_DEBUGPL(DBG_HCDV, "	 NTD: %d\n", hctsiz.b_ddma.ntd);
++
++	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
++
++	hcdma.d32 = 0;
++	hcdma.b.dma_addr = ((uint32_t) hc->desc_list_addr) >> 11;
++
++	/* Always start from first descriptor. */
++	hcdma.b.ctd = 0;
++	DWC_WRITE_REG32(&hc_regs->hcdma, hcdma.d32);
++
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	hcchar.b.multicnt = hc->multi_count;
++
++#ifdef DEBUG
++	core_if->start_hcchar_val[hc->hc_num] = hcchar.d32;
++	if (hcchar.b.chdis) {
++		DWC_WARN("%s: chdis set, channel %d, hcchar 0x%08x\n",
++			 __func__, hc->hc_num, hcchar.d32);
++	}
++#endif
++
++	/* Set host channel enable after all other setup is complete. */
++	hcchar.b.chen = 1;
++	hcchar.b.chdis = 0;
++
++	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++
++	hc->xfer_started = 1;
++	hc->requests++;
++
++#ifdef DEBUG
++	if ((hc->ep_type != DWC_OTG_EP_TYPE_INTR)
++	    && (hc->ep_type != DWC_OTG_EP_TYPE_ISOC)) {
++                DWC_DEBUGPL(DBG_HCDV, "DMA transfer %d from core_if %p\n",
++                            hc->hc_num, core_if);//GRAYG
++		core_if->hc_xfer_info[hc->hc_num].core_if = core_if;
++		core_if->hc_xfer_info[hc->hc_num].hc = hc;
++		/* Start a timer for this transfer. */
++		DWC_TIMER_SCHEDULE(core_if->hc_xfer_timer[hc->hc_num], 10000);
++	}
++#endif
++
++}
++
++/**
++ * This function continues a data transfer that was started by previous call
++ * to <code>dwc_otg_hc_start_transfer</code>. The caller must ensure there is
++ * sufficient space in the request queue and Tx Data FIFO. This function
++ * should only be called in Slave mode. In DMA mode, the controller acts
++ * autonomously to complete transfers programmed to a host channel.
++ *
++ * For an OUT transfer, a new data packet is loaded into the appropriate FIFO
++ * if there is any data remaining to be queued. For an IN transfer, another
++ * data packet is always requested. For the SETUP phase of a control transfer,
++ * this function does nothing.
++ *
++ * @return 1 if a new request is queued, 0 if no more requests are required
++ * for this transfer.
++ */
++int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
++{
++	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
++
++	if (hc->do_split) {
++		/* SPLITs always queue just once per channel */
++		return 0;
++	} else if (hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
++		/* SETUPs are queued only once since they can't be NAKed. */
++		return 0;
++	} else if (hc->ep_is_in) {
++		/*
++		 * Always queue another request for other IN transfers. If
++		 * back-to-back INs are issued and NAKs are received for both,
++		 * the driver may still be processing the first NAK when the
++		 * second NAK is received. When the interrupt handler clears
++		 * the NAK interrupt for the first NAK, the second NAK will
++		 * not be seen. So we can't depend on the NAK interrupt
++		 * handler to requeue a NAKed request. Instead, IN requests
++		 * are issued each time this function is called. When the
++		 * transfer completes, the extra requests for the channel will
++		 * be flushed.
++		 */
++		hcchar_data_t hcchar;
++		dwc_otg_hc_regs_t *hc_regs =
++		    core_if->host_if->hc_regs[hc->hc_num];
++
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++		hc_set_even_odd_frame(core_if, hc, &hcchar);
++		hcchar.b.chen = 1;
++		hcchar.b.chdis = 0;
++		DWC_DEBUGPL(DBG_HCDV, "	 IN xfer: hcchar = 0x%08x\n",
++			    hcchar.d32);
++		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++		hc->requests++;
++		return 1;
++	} else {
++		/* OUT transfers. */
++		if (hc->xfer_count < hc->xfer_len) {
++			if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
++			    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++				hcchar_data_t hcchar;
++				dwc_otg_hc_regs_t *hc_regs;
++				hc_regs = core_if->host_if->hc_regs[hc->hc_num];
++				hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++				hc_set_even_odd_frame(core_if, hc, &hcchar);
++			}
++
++			/* Load OUT packet into the appropriate Tx FIFO. */
++			dwc_otg_hc_write_packet(core_if, hc);
++			hc->requests++;
++			return 1;
++		} else {
++			return 0;
++		}
++	}
++}
++
++/**
++ * Starts a PING transfer. This function should only be called in Slave mode.
++ * The Do Ping bit is set in the HCTSIZ register, then the channel is enabled.
++ */
++void dwc_otg_hc_do_ping(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
++{
++	hcchar_data_t hcchar;
++	hctsiz_data_t hctsiz;
++	dwc_otg_hc_regs_t *hc_regs = core_if->host_if->hc_regs[hc->hc_num];
++
++	DWC_DEBUGPL(DBG_HCDV, "%s: Channel %d\n", __func__, hc->hc_num);
++
++	hctsiz.d32 = 0;
++	hctsiz.b.dopng = 1;
++	hctsiz.b.pktcnt = 1;
++	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
++
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	hcchar.b.chen = 1;
++	hcchar.b.chdis = 0;
++	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++}
++
++/*
++ * This function writes a packet into the Tx FIFO associated with the Host
++ * Channel. For a channel associated with a non-periodic EP, the non-periodic
++ * Tx FIFO is written. For a channel associated with a periodic EP, the
++ * periodic Tx FIFO is written. This function should only be called in Slave
++ * mode.
++ *
++ * Upon return the xfer_buff and xfer_count fields in _hc are incremented by
++ * then number of bytes written to the Tx FIFO.
++ */
++void dwc_otg_hc_write_packet(dwc_otg_core_if_t * core_if, dwc_hc_t * hc)
++{
++	uint32_t i;
++	uint32_t remaining_count;
++	uint32_t byte_count;
++	uint32_t dword_count;
++
++	uint32_t *data_buff = (uint32_t *) (hc->xfer_buff);
++	uint32_t *data_fifo = core_if->data_fifo[hc->hc_num];
++
++	remaining_count = hc->xfer_len - hc->xfer_count;
++	if (remaining_count > hc->max_packet) {
++		byte_count = hc->max_packet;
++	} else {
++		byte_count = remaining_count;
++	}
++
++	dword_count = (byte_count + 3) / 4;
++
++	if ((((unsigned long)data_buff) & 0x3) == 0) {
++		/* xfer_buff is DWORD aligned. */
++		for (i = 0; i < dword_count; i++, data_buff++) {
++			DWC_WRITE_REG32(data_fifo, *data_buff);
++		}
++	} else {
++		/* xfer_buff is not DWORD aligned. */
++		for (i = 0; i < dword_count; i++, data_buff++) {
++			uint32_t data;
++			data =
++			    (data_buff[0] | data_buff[1] << 8 | data_buff[2] <<
++			     16 | data_buff[3] << 24);
++			DWC_WRITE_REG32(data_fifo, data);
++		}
++	}
++
++	hc->xfer_count += byte_count;
++	hc->xfer_buff += byte_count;
++}
++
++/**
++ * Gets the current USB frame number. This is the frame number from the last
++ * SOF packet.
++ */
++uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t * core_if)
++{
++	dsts_data_t dsts;
++	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++
++	/* read current frame/microframe number from DSTS register */
++	return dsts.b.soffn;
++}
++
++/**
++ * Calculates and gets the frame Interval value of HFIR register according PHY
++ * type and speed.The application can modify a value of HFIR register only after
++ * the Port Enable bit of the Host Port Control and Status register
++ * (HPRT.PrtEnaPort) has been set.
++*/
++
++uint32_t calc_frame_interval(dwc_otg_core_if_t * core_if)
++{
++	gusbcfg_data_t usbcfg;
++	hwcfg2_data_t hwcfg2;
++	hprt0_data_t hprt0;
++	int clock = 60;		// default value
++	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++	hwcfg2.d32 = DWC_READ_REG32(&core_if->core_global_regs->ghwcfg2);
++	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
++	if (!usbcfg.b.physel && usbcfg.b.ulpi_utmi_sel && !usbcfg.b.phyif)
++		clock = 60;
++	if (usbcfg.b.physel && hwcfg2.b.fs_phy_type == 3)
++		clock = 48;
++	if (!usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
++	    !usbcfg.b.ulpi_utmi_sel && usbcfg.b.phyif)
++		clock = 30;
++	if (!usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
++	    !usbcfg.b.ulpi_utmi_sel && !usbcfg.b.phyif)
++		clock = 60;
++	if (usbcfg.b.phylpwrclksel && !usbcfg.b.physel &&
++	    !usbcfg.b.ulpi_utmi_sel && usbcfg.b.phyif)
++		clock = 48;
++	if (usbcfg.b.physel && !usbcfg.b.phyif && hwcfg2.b.fs_phy_type == 2)
++		clock = 48;
++	if (usbcfg.b.physel && hwcfg2.b.fs_phy_type == 1)
++		clock = 48;
++	if (hprt0.b.prtspd == 0)
++		/* High speed case */
++		return 125 * clock - 1;
++	else
++		/* FS/LS case */
++		return 1000 * clock - 1;
++}
++
++/**
++ * This function reads a setup packet from the Rx FIFO into the destination
++ * buffer. This function is called from the Rx Status Queue Level (RxStsQLvl)
++ * Interrupt routine when a SETUP packet has been received in Slave mode.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param dest Destination buffer for packet data.
++ */
++void dwc_otg_read_setup_packet(dwc_otg_core_if_t * core_if, uint32_t * dest)
++{
++	device_grxsts_data_t status;
++	/* Get the 8 bytes of a setup transaction data */
++
++	/* Pop 2 DWORDS off the receive data FIFO into memory */
++	dest[0] = DWC_READ_REG32(core_if->data_fifo[0]);
++	dest[1] = DWC_READ_REG32(core_if->data_fifo[0]);
++	if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++		status.d32 =
++		    DWC_READ_REG32(&core_if->core_global_regs->grxstsp);
++		DWC_DEBUGPL(DBG_ANY,
++			    "EP:%d BCnt:%d " "pktsts:%x Frame:%d(0x%0x)\n",
++			    status.b.epnum, status.b.bcnt, status.b.pktsts,
++			    status.b.fn, status.b.fn);
++	}
++}
++
++/**
++ * This function enables EP0 OUT to receive SETUP packets and configures EP0
++ * IN for transmitting packets. It is normally called when the
++ * "Enumeration Done" interrupt occurs.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP0 data.
++ */
++void dwc_otg_ep0_activate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	dsts_data_t dsts;
++	depctl_data_t diepctl;
++	depctl_data_t doepctl;
++	dctl_data_t dctl = {.d32 = 0 };
++
++	ep->stp_rollover = 0;
++	/* Read the Device Status and Endpoint 0 Control registers */
++	dsts.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dsts);
++	diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
++	doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl);
++
++	/* Set the MPS of the IN EP based on the enumeration speed */
++	switch (dsts.b.enumspd) {
++	case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
++	case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
++	case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
++		diepctl.b.mps = DWC_DEP0CTL_MPS_64;
++		break;
++	case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
++		diepctl.b.mps = DWC_DEP0CTL_MPS_8;
++		break;
++	}
++
++	DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
++
++	/* Enable OUT EP for receive */
++	if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
++	doepctl.b.epena = 1;
++	DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
++	}
++#ifdef VERBOSE
++	DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n",
++		    DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
++	DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n",
++		    DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl));
++#endif
++	dctl.b.cgnpinnak = 1;
++
++	DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
++	DWC_DEBUGPL(DBG_PCDV, "dctl=%0x\n",
++		    DWC_READ_REG32(&dev_if->dev_global_regs->dctl));
++
++}
++
++/**
++ * This function activates an EP.  The Device EP control register for
++ * the EP is configured as defined in the ep structure. Note: This
++ * function is not used for EP0.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to activate.
++ */
++void dwc_otg_ep_activate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	depctl_data_t depctl;
++	volatile uint32_t *addr;
++	daint_data_t daintmsk = {.d32 = 0 };
++	dcfg_data_t dcfg;
++	uint8_t i;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s() EP%d-%s\n", __func__, ep->num,
++		    (ep->is_in ? "IN" : "OUT"));
++
++#ifdef DWC_UTE_PER_IO
++	ep->xiso_frame_num = 0xFFFFFFFF;
++	ep->xiso_active_xfers = 0;
++	ep->xiso_queued_xfers = 0;
++#endif
++	/* Read DEPCTLn register */
++	if (ep->is_in == 1) {
++		addr = &dev_if->in_ep_regs[ep->num]->diepctl;
++		daintmsk.ep.in = 1 << ep->num;
++	} else {
++		addr = &dev_if->out_ep_regs[ep->num]->doepctl;
++		daintmsk.ep.out = 1 << ep->num;
++	}
++
++	/* If the EP is already active don't change the EP Control
++	 * register. */
++	depctl.d32 = DWC_READ_REG32(addr);
++	if (!depctl.b.usbactep) {
++		depctl.b.mps = ep->maxpacket;
++		depctl.b.eptype = ep->type;
++		depctl.b.txfnum = ep->tx_fifo_num;
++
++		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
++			depctl.b.setd0pid = 1;	// ???
++		} else {
++			depctl.b.setd0pid = 1;
++		}
++		depctl.b.usbactep = 1;
++
++		/* Update nextep_seq array and EPMSCNT in DCFG*/
++		if (!(depctl.b.eptype & 1) && (ep->is_in == 1)) {	// NP IN EP
++			for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
++				if (core_if->nextep_seq[i] == core_if->first_in_nextep_seq)
++				break;
++			}
++			core_if->nextep_seq[i] = ep->num;
++			core_if->nextep_seq[ep->num] = core_if->first_in_nextep_seq;
++			depctl.b.nextep = core_if->nextep_seq[ep->num];
++			dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
++			dcfg.b.epmscnt++;
++			DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
++
++			DWC_DEBUGPL(DBG_PCDV,
++				    "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
++				__func__, core_if->first_in_nextep_seq);
++			for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
++				DWC_DEBUGPL(DBG_PCDV, "%2d\n",
++					    core_if->nextep_seq[i]);
++			}
++
++		}
++
++
++		DWC_WRITE_REG32(addr, depctl.d32);
++		DWC_DEBUGPL(DBG_PCDV, "DEPCTL=%08x\n", DWC_READ_REG32(addr));
++	}
++
++	/* Enable the Interrupt for this EP */
++	if (core_if->multiproc_int_enable) {
++		if (ep->is_in == 1) {
++			diepmsk_data_t diepmsk = {.d32 = 0 };
++			diepmsk.b.xfercompl = 1;
++			diepmsk.b.timeout = 1;
++			diepmsk.b.epdisabled = 1;
++			diepmsk.b.ahberr = 1;
++			diepmsk.b.intknepmis = 1;
++			if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
++				diepmsk.b.intknepmis = 0;
++			diepmsk.b.txfifoundrn = 1;	//?????
++			if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
++				diepmsk.b.nak = 1;
++			}
++
++
++
++/*
++			if (core_if->dma_desc_enable) {
++				diepmsk.b.bna = 1;
++			}
++*/
++/*
++			if (core_if->dma_enable) {
++				doepmsk.b.nak = 1;
++			}
++*/
++			DWC_WRITE_REG32(&dev_if->dev_global_regs->
++					diepeachintmsk[ep->num], diepmsk.d32);
++
++		} else {
++			doepmsk_data_t doepmsk = {.d32 = 0 };
++			doepmsk.b.xfercompl = 1;
++			doepmsk.b.ahberr = 1;
++			doepmsk.b.epdisabled = 1;
++			if (ep->type == DWC_OTG_EP_TYPE_ISOC)
++				doepmsk.b.outtknepdis = 1;
++
++/*
++
++			if (core_if->dma_desc_enable) {
++				doepmsk.b.bna = 1;
++			}
++*/
++/*
++			doepmsk.b.babble = 1;
++			doepmsk.b.nyet = 1;
++			doepmsk.b.nak = 1;
++*/
++			DWC_WRITE_REG32(&dev_if->dev_global_regs->
++					doepeachintmsk[ep->num], doepmsk.d32);
++		}
++		DWC_MODIFY_REG32(&dev_if->dev_global_regs->deachintmsk,
++				 0, daintmsk.d32);
++	} else {
++		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
++			if (ep->is_in) {
++				diepmsk_data_t diepmsk = {.d32 = 0 };
++				diepmsk.b.nak = 1;
++				DWC_MODIFY_REG32(&dev_if->dev_global_regs->diepmsk, 0, diepmsk.d32);
++			} else {
++				doepmsk_data_t doepmsk = {.d32 = 0 };
++				doepmsk.b.outtknepdis = 1;
++				DWC_MODIFY_REG32(&dev_if->dev_global_regs->doepmsk, 0, doepmsk.d32);
++			}
++		}
++		DWC_MODIFY_REG32(&dev_if->dev_global_regs->daintmsk,
++				 0, daintmsk.d32);
++	}
++
++	DWC_DEBUGPL(DBG_PCDV, "DAINTMSK=%0x\n",
++		    DWC_READ_REG32(&dev_if->dev_global_regs->daintmsk));
++
++	ep->stall_clear_flag = 0;
++
++	return;
++}
++
++/**
++ * This function deactivates an EP. This is done by clearing the USB Active
++ * EP bit in the Device EP control register. Note: This function is not used
++ * for EP0. EP0 cannot be deactivated.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to deactivate.
++ */
++void dwc_otg_ep_deactivate(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	depctl_data_t depctl = {.d32 = 0 };
++	volatile uint32_t *addr;
++	daint_data_t daintmsk = {.d32 = 0 };
++	dcfg_data_t dcfg;
++	uint8_t i = 0;
++
++#ifdef DWC_UTE_PER_IO
++	ep->xiso_frame_num = 0xFFFFFFFF;
++	ep->xiso_active_xfers = 0;
++	ep->xiso_queued_xfers = 0;
++#endif
++
++	/* Read DEPCTLn register */
++	if (ep->is_in == 1) {
++		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
++		daintmsk.ep.in = 1 << ep->num;
++	} else {
++		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
++		daintmsk.ep.out = 1 << ep->num;
++	}
++
++	depctl.d32 = DWC_READ_REG32(addr);
++
++	depctl.b.usbactep = 0;
++
++	/* Update nextep_seq array and EPMSCNT in DCFG*/
++	if (!(depctl.b.eptype & 1) && ep->is_in == 1) {	// NP EP IN
++		for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
++			if (core_if->nextep_seq[i] == ep->num)
++			break;
++		}
++		core_if->nextep_seq[i] = core_if->nextep_seq[ep->num];
++		if (core_if->first_in_nextep_seq == ep->num)
++			core_if->first_in_nextep_seq = i;
++		core_if->nextep_seq[ep->num] = 0xff;
++		depctl.b.nextep = 0;
++		dcfg.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++		dcfg.b.epmscnt--;
++		DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
++				dcfg.d32);
++
++		DWC_DEBUGPL(DBG_PCDV,
++			    "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
++				__func__, core_if->first_in_nextep_seq);
++			for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
++				DWC_DEBUGPL(DBG_PCDV, "%2d\n", core_if->nextep_seq[i]);
++			}
++	}
++
++	if (ep->is_in == 1)
++		depctl.b.txfnum = 0;
++
++	if (core_if->dma_desc_enable)
++		depctl.b.epdis = 1;
++
++	DWC_WRITE_REG32(addr, depctl.d32);
++	depctl.d32 = DWC_READ_REG32(addr);
++	if (core_if->dma_enable && ep->type == DWC_OTG_EP_TYPE_ISOC
++	    && depctl.b.epena) {
++		depctl_data_t depctl = {.d32 = 0};
++		if (ep->is_in) {
++			diepint_data_t diepint = {.d32 = 0};
++
++			depctl.b.snak = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
++					diepctl, depctl.d32);
++			do {
++				dwc_udelay(10);
++				diepint.d32 =
++				    DWC_READ_REG32(&core_if->
++						   dev_if->in_ep_regs[ep->num]->
++						   diepint);
++			} while (!diepint.b.inepnakeff);
++			diepint.b.inepnakeff = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
++					diepint, diepint.d32);
++			depctl.d32 = 0;
++			depctl.b.epdis = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
++					diepctl, depctl.d32);
++			do {
++				dwc_udelay(10);
++				diepint.d32 =
++				    DWC_READ_REG32(&core_if->
++						   dev_if->in_ep_regs[ep->num]->
++						   diepint);
++			} while (!diepint.b.epdisabled);
++			diepint.b.epdisabled = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
++					diepint, diepint.d32);
++		} else {
++			dctl_data_t dctl = {.d32 = 0};
++			gintmsk_data_t gintsts = {.d32 = 0};
++			doepint_data_t doepint = {.d32 = 0};
++			dctl.b.sgoutnak = 1;
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++					 dctl, 0, dctl.d32);
++			do {
++				dwc_udelay(10);
++				gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++			} while (!gintsts.b.goutnakeff);
++			gintsts.d32 = 0;
++			gintsts.b.goutnakeff = 1;
++			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++			depctl.d32 = 0;
++			depctl.b.epdis = 1;
++			depctl.b.snak = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->doepctl, depctl.d32);
++			do
++			{
++				dwc_udelay(10);
++				doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
++											out_ep_regs[ep->num]->doepint);
++			} while (!doepint.b.epdisabled);
++
++			doepint.b.epdisabled = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->doepint, doepint.d32);
++
++			dctl.d32 = 0;
++			dctl.b.cgoutnak = 1;
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
++		}
++	}
++
++	/* Disable the Interrupt for this EP */
++	if (core_if->multiproc_int_enable) {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->deachintmsk,
++				 daintmsk.d32, 0);
++
++		if (ep->is_in == 1) {
++			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
++					diepeachintmsk[ep->num], 0);
++		} else {
++			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->
++					doepeachintmsk[ep->num], 0);
++		}
++	} else {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->daintmsk,
++				 daintmsk.d32, 0);
++	}
++
++}
++
++/**
++ * This function initializes dma descriptor chain.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ */
++static void init_dma_desc_chain(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	dwc_otg_dev_dma_desc_t *dma_desc;
++	uint32_t offset;
++	uint32_t xfer_est;
++	int i;
++	unsigned maxxfer_local, total_len;
++
++	if (!ep->is_in && ep->type == DWC_OTG_EP_TYPE_INTR &&
++					(ep->maxpacket%4)) {
++		maxxfer_local = ep->maxpacket;
++		total_len = ep->xfer_len;
++	} else {
++		maxxfer_local = ep->maxxfer;
++		total_len = ep->total_len;
++	}
++
++	ep->desc_cnt = (total_len / maxxfer_local) +
++            ((total_len % maxxfer_local) ? 1 : 0);
++
++	if (!ep->desc_cnt)
++		ep->desc_cnt = 1;
++
++	if (ep->desc_cnt > MAX_DMA_DESC_CNT)
++		ep->desc_cnt = MAX_DMA_DESC_CNT;
++
++	dma_desc = ep->desc_addr;
++	if (maxxfer_local == ep->maxpacket) {
++		if ((total_len % maxxfer_local) &&
++				(total_len/maxxfer_local < MAX_DMA_DESC_CNT)) {
++			xfer_est = (ep->desc_cnt - 1) * maxxfer_local +
++					(total_len % maxxfer_local);
++		} else
++			xfer_est = ep->desc_cnt * maxxfer_local;
++	} else
++		xfer_est = total_len;
++	offset = 0;
++	for (i = 0; i < ep->desc_cnt; ++i) {
++		/** DMA Descriptor Setup */
++		if (xfer_est > maxxfer_local) {
++			dma_desc->status.b.bs = BS_HOST_BUSY;
++			dma_desc->status.b.l = 0;
++			dma_desc->status.b.ioc = 0;
++			dma_desc->status.b.sp = 0;
++			dma_desc->status.b.bytes = maxxfer_local;
++			dma_desc->buf = ep->dma_addr + offset;
++			dma_desc->status.b.sts = 0;
++			dma_desc->status.b.bs = BS_HOST_READY;
++
++			xfer_est -= maxxfer_local;
++			offset += maxxfer_local;
++		} else {
++			dma_desc->status.b.bs = BS_HOST_BUSY;
++			dma_desc->status.b.l = 1;
++			dma_desc->status.b.ioc = 1;
++			if (ep->is_in) {
++				dma_desc->status.b.sp =
++				    (xfer_est %
++				     ep->maxpacket) ? 1 : ((ep->
++							    sent_zlp) ? 1 : 0);
++				dma_desc->status.b.bytes = xfer_est;
++			} else {
++				if (maxxfer_local == ep->maxpacket)
++					dma_desc->status.b.bytes = xfer_est;
++				else
++					dma_desc->status.b.bytes =
++						xfer_est + ((4 - (xfer_est & 0x3)) & 0x3);
++			}
++
++			dma_desc->buf = ep->dma_addr + offset;
++			dma_desc->status.b.sts = 0;
++			dma_desc->status.b.bs = BS_HOST_READY;
++		}
++		dma_desc++;
++	}
++}
++/**
++ * This function is called when to write ISOC data into appropriate dedicated
++ * periodic FIFO.
++ */
++static int32_t write_isoc_tx_fifo(dwc_otg_core_if_t * core_if, dwc_ep_t * dwc_ep)
++{
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	dwc_otg_dev_in_ep_regs_t *ep_regs;
++	dtxfsts_data_t txstatus = {.d32 = 0 };
++	uint32_t len = 0;
++	int epnum = dwc_ep->num;
++	int dwords;
++
++	DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %d \n", epnum);
++
++	ep_regs = core_if->dev_if->in_ep_regs[epnum];
++
++	len = dwc_ep->xfer_len - dwc_ep->xfer_count;
++
++	if (len > dwc_ep->maxpacket) {
++		len = dwc_ep->maxpacket;
++	}
++
++	dwords = (len + 3) / 4;
++
++	/* While there is space in the queue and space in the FIFO and
++	 * More data to tranfer, Write packets to the Tx FIFO */
++	txstatus.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
++	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32);
++
++	while (txstatus.b.txfspcavail > dwords &&
++	       dwc_ep->xfer_count < dwc_ep->xfer_len && dwc_ep->xfer_len != 0) {
++		/* Write the FIFO */
++		dwc_otg_ep_write_packet(core_if, dwc_ep, 0);
++
++		len = dwc_ep->xfer_len - dwc_ep->xfer_count;
++		if (len > dwc_ep->maxpacket) {
++			len = dwc_ep->maxpacket;
++		}
++
++		dwords = (len + 3) / 4;
++		txstatus.d32 =
++		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
++		DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", epnum,
++			    txstatus.d32);
++	}
++
++	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum,
++		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts));
++
++	return 1;
++}
++/**
++ * This function does the setup for a data transfer for an EP and
++ * starts the transfer. For an IN transfer, the packets will be
++ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
++ * the packets are unloaded from the Rx FIFO in the ISR.  the ISR.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ */
++
++void dwc_otg_ep_start_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	depctl_data_t depctl;
++	deptsiz_data_t deptsiz;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
++	DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
++		    "xfer_buff=%p start_xfer_buff=%p, total_len = %d\n",
++		    ep->num, (ep->is_in ? "IN" : "OUT"), ep->xfer_len,
++		    ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff,
++		    ep->total_len);
++	/* IN endpoint */
++	if (ep->is_in == 1) {
++		dwc_otg_dev_in_ep_regs_t *in_regs =
++		    core_if->dev_if->in_ep_regs[ep->num];
++
++		gnptxsts_data_t gtxstatus;
++
++		gtxstatus.d32 =
++		    DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
++
++		if (core_if->en_multiple_tx_fifo == 0
++		    && gtxstatus.b.nptxqspcavail == 0 && !core_if->dma_enable) {
++#ifdef DEBUG
++			DWC_PRINTF("TX Queue Full (0x%0x)\n", gtxstatus.d32);
++#endif
++			return;
++		}
++
++		depctl.d32 = DWC_READ_REG32(&(in_regs->diepctl));
++		deptsiz.d32 = DWC_READ_REG32(&(in_regs->dieptsiz));
++
++		if (ep->maxpacket > ep->maxxfer / MAX_PKT_CNT)
++			ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
++				ep->maxxfer : (ep->total_len - ep->xfer_len);
++		else
++			ep->xfer_len += (MAX_PKT_CNT * ep->maxpacket < (ep->total_len - ep->xfer_len)) ?
++				 MAX_PKT_CNT * ep->maxpacket : (ep->total_len - ep->xfer_len);
++
++
++		/* Zero Length Packet? */
++		if ((ep->xfer_len - ep->xfer_count) == 0) {
++			deptsiz.b.xfersize = 0;
++			deptsiz.b.pktcnt = 1;
++		} else {
++			/* Program the transfer size and packet count
++			 *      as follows: xfersize = N * maxpacket +
++			 *      short_packet pktcnt = N + (short_packet
++			 *      exist ? 1 : 0)
++			 */
++			deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
++			deptsiz.b.pktcnt =
++			    (ep->xfer_len - ep->xfer_count - 1 +
++			     ep->maxpacket) / ep->maxpacket;
++			if (deptsiz.b.pktcnt > MAX_PKT_CNT) {
++				deptsiz.b.pktcnt = MAX_PKT_CNT;
++				deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
++			}
++			if (ep->type == DWC_OTG_EP_TYPE_ISOC)
++				deptsiz.b.mc = deptsiz.b.pktcnt;
++		}
++
++		/* Write the DMA register */
++		if (core_if->dma_enable) {
++			if (core_if->dma_desc_enable == 0) {
++				if (ep->type != DWC_OTG_EP_TYPE_ISOC)
++					deptsiz.b.mc = 1;
++				DWC_WRITE_REG32(&in_regs->dieptsiz,
++						deptsiz.d32);
++				DWC_WRITE_REG32(&(in_regs->diepdma),
++						(uint32_t) ep->dma_addr);
++			} else {
++#ifdef DWC_UTE_CFI
++				/* The descriptor chain should be already initialized by now */
++				if (ep->buff_mode != BM_STANDARD) {
++					DWC_WRITE_REG32(&in_regs->diepdma,
++							ep->descs_dma_addr);
++				} else {
++#endif
++					init_dma_desc_chain(core_if, ep);
++				/** DIEPDMAn Register write */
++					DWC_WRITE_REG32(&in_regs->diepdma,
++							ep->dma_desc_addr);
++#ifdef DWC_UTE_CFI
++				}
++#endif
++			}
++		} else {
++			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
++			if (ep->type != DWC_OTG_EP_TYPE_ISOC) {
++				/**
++				 * Enable the Non-Periodic Tx FIFO empty interrupt,
++				 * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
++				 * the data will be written into the fifo by the ISR.
++				 */
++				if (core_if->en_multiple_tx_fifo == 0) {
++					intr_mask.b.nptxfempty = 1;
++					DWC_MODIFY_REG32
++					    (&core_if->core_global_regs->gintmsk,
++					     intr_mask.d32, intr_mask.d32);
++				} else {
++					/* Enable the Tx FIFO Empty Interrupt for this EP */
++					if (ep->xfer_len > 0) {
++						uint32_t fifoemptymsk = 0;
++						fifoemptymsk = 1 << ep->num;
++						DWC_MODIFY_REG32
++						    (&core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
++						     0, fifoemptymsk);
++
++					}
++				}
++			}  else {
++					 write_isoc_tx_fifo(core_if, ep);
++			}
++		}
++		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
++			depctl.b.nextep = core_if->nextep_seq[ep->num];
++
++		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
++			dsts_data_t dsts = {.d32 = 0};
++			if (ep->bInterval == 1) {
++				dsts.d32 =
++				    DWC_READ_REG32(&core_if->dev_if->
++						   dev_global_regs->dsts);
++				ep->frame_num = dsts.b.soffn + ep->bInterval;
++				if (ep->frame_num > 0x3FFF) {
++					ep->frm_overrun = 1;
++					ep->frame_num &= 0x3FFF;
++				} else
++					ep->frm_overrun = 0;
++				if (ep->frame_num & 0x1) {
++					depctl.b.setd1pid = 1;
++				} else {
++					depctl.b.setd0pid = 1;
++				}
++			}
++		}
++		/* EP enable, IN data in FIFO */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
++
++	} else {
++		/* OUT endpoint */
++		dwc_otg_dev_out_ep_regs_t *out_regs =
++		    core_if->dev_if->out_ep_regs[ep->num];
++
++		depctl.d32 = DWC_READ_REG32(&(out_regs->doepctl));
++		deptsiz.d32 = DWC_READ_REG32(&(out_regs->doeptsiz));
++
++		if (!core_if->dma_desc_enable) {
++			if (ep->maxpacket > ep->maxxfer / MAX_PKT_CNT)
++				ep->xfer_len += (ep->maxxfer < (ep->total_len - ep->xfer_len)) ?
++				ep->maxxfer : (ep->total_len - ep->xfer_len);
++                else
++					ep->xfer_len += (MAX_PKT_CNT * ep->maxpacket < (ep->total_len
++					- ep->xfer_len)) ? MAX_PKT_CNT * ep->maxpacket : (ep->total_len - ep->xfer_len);
++		}
++
++		/* Program the transfer size and packet count as follows:
++		 *
++		 *      pktcnt = N
++		 *      xfersize = N * maxpacket
++		 */
++		if ((ep->xfer_len - ep->xfer_count) == 0) {
++			/* Zero Length Packet */
++			deptsiz.b.xfersize = ep->maxpacket;
++			deptsiz.b.pktcnt = 1;
++		} else {
++			deptsiz.b.pktcnt =
++			    (ep->xfer_len - ep->xfer_count +
++			     (ep->maxpacket - 1)) / ep->maxpacket;
++			if (deptsiz.b.pktcnt > MAX_PKT_CNT) {
++				deptsiz.b.pktcnt = MAX_PKT_CNT;
++			}
++			if (!core_if->dma_desc_enable) {
++				ep->xfer_len =
++					deptsiz.b.pktcnt * ep->maxpacket + ep->xfer_count;
++			}
++			deptsiz.b.xfersize = ep->xfer_len - ep->xfer_count;
++		}
++
++		DWC_DEBUGPL(DBG_PCDV, "ep%d xfersize=%d pktcnt=%d\n",
++			    ep->num, deptsiz.b.xfersize, deptsiz.b.pktcnt);
++
++		if (core_if->dma_enable) {
++			if (!core_if->dma_desc_enable) {
++				DWC_WRITE_REG32(&out_regs->doeptsiz,
++						deptsiz.d32);
++
++				DWC_WRITE_REG32(&(out_regs->doepdma),
++						(uint32_t) ep->dma_addr);
++			} else {
++#ifdef DWC_UTE_CFI
++				/* The descriptor chain should be already initialized by now */
++				if (ep->buff_mode != BM_STANDARD) {
++					DWC_WRITE_REG32(&out_regs->doepdma,
++							ep->descs_dma_addr);
++				} else {
++#endif
++					/** This is used for interrupt out transfers*/
++					if (!ep->xfer_len)
++						ep->xfer_len = ep->total_len;
++					init_dma_desc_chain(core_if, ep);
++
++					if (core_if->core_params->dev_out_nak) {
++						if (ep->type == DWC_OTG_EP_TYPE_BULK) {
++							deptsiz.b.pktcnt = (ep->total_len +
++								(ep->maxpacket - 1)) / ep->maxpacket;
++							deptsiz.b.xfersize = ep->total_len;
++							/* Remember initial value of doeptsiz */
++							core_if->start_doeptsiz_val[ep->num] = deptsiz.d32;
++							DWC_WRITE_REG32(&out_regs->doeptsiz,
++								deptsiz.d32);
++						}
++					}
++				/** DOEPDMAn Register write */
++					DWC_WRITE_REG32(&out_regs->doepdma,
++							ep->dma_desc_addr);
++#ifdef DWC_UTE_CFI
++				}
++#endif
++			}
++		} else {
++			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
++		}
++
++		if (ep->type == DWC_OTG_EP_TYPE_ISOC) {
++			dsts_data_t dsts = {.d32 = 0};
++			if (ep->bInterval == 1) {
++				dsts.d32 =
++				    DWC_READ_REG32(&core_if->dev_if->
++						   dev_global_regs->dsts);
++				ep->frame_num = dsts.b.soffn + ep->bInterval;
++				if (ep->frame_num > 0x3FFF) {
++					ep->frm_overrun = 1;
++					ep->frame_num &= 0x3FFF;
++				} else
++					ep->frm_overrun = 0;
++
++				if (ep->frame_num & 0x1) {
++					depctl.b.setd1pid = 1;
++				} else {
++					depctl.b.setd0pid = 1;
++				}
++			}
++		}
++
++		/* EP enable */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++
++		DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
++
++		DWC_DEBUGPL(DBG_PCD, "DOEPCTL=%08x DOEPTSIZ=%08x\n",
++			    DWC_READ_REG32(&out_regs->doepctl),
++			    DWC_READ_REG32(&out_regs->doeptsiz));
++		DWC_DEBUGPL(DBG_PCD, "DAINTMSK=%08x GINTMSK=%08x\n",
++			    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->
++					   daintmsk),
++			    DWC_READ_REG32(&core_if->core_global_regs->
++					   gintmsk));
++
++		/* Timer is scheduling only for out bulk transfers for
++		 * "Device DDMA OUT NAK Enhancement" feature to inform user
++		 * about received data payload in case of timeout
++		 */
++		if (core_if->core_params->dev_out_nak) {
++			if (ep->type == DWC_OTG_EP_TYPE_BULK) {
++				core_if->ep_xfer_info[ep->num].core_if = core_if;
++				core_if->ep_xfer_info[ep->num].ep = ep;
++				core_if->ep_xfer_info[ep->num].state = 1;
++
++				/* Start a timer for this transfer. */
++				DWC_TIMER_SCHEDULE(core_if->ep_xfer_timer[ep->num], 10000);
++			}
++		}
++	}
++}
++
++/**
++ * This function setup a zero length transfer in Buffer DMA and
++ * Slave modes for usb requests with zero field set
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ *
++ */
++void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++
++	depctl_data_t depctl;
++	deptsiz_data_t deptsiz;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s()\n", __func__);
++	DWC_PRINTF("zero length transfer is called\n");
++
++	/* IN endpoint */
++	if (ep->is_in == 1) {
++		dwc_otg_dev_in_ep_regs_t *in_regs =
++		    core_if->dev_if->in_ep_regs[ep->num];
++
++		depctl.d32 = DWC_READ_REG32(&(in_regs->diepctl));
++		deptsiz.d32 = DWC_READ_REG32(&(in_regs->dieptsiz));
++
++		deptsiz.b.xfersize = 0;
++		deptsiz.b.pktcnt = 1;
++
++		/* Write the DMA register */
++		if (core_if->dma_enable) {
++			if (core_if->dma_desc_enable == 0) {
++				deptsiz.b.mc = 1;
++				DWC_WRITE_REG32(&in_regs->dieptsiz,
++						deptsiz.d32);
++				DWC_WRITE_REG32(&(in_regs->diepdma),
++						(uint32_t) ep->dma_addr);
++			}
++		} else {
++			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
++			/**
++			 * Enable the Non-Periodic Tx FIFO empty interrupt,
++			 * or the Tx FIFO epmty interrupt in dedicated Tx FIFO mode,
++			 * the data will be written into the fifo by the ISR.
++			 */
++			if (core_if->en_multiple_tx_fifo == 0) {
++				intr_mask.b.nptxfempty = 1;
++				DWC_MODIFY_REG32(&core_if->
++						 core_global_regs->gintmsk,
++						 intr_mask.d32, intr_mask.d32);
++			} else {
++				/* Enable the Tx FIFO Empty Interrupt for this EP */
++				if (ep->xfer_len > 0) {
++					uint32_t fifoemptymsk = 0;
++					fifoemptymsk = 1 << ep->num;
++					DWC_MODIFY_REG32(&core_if->
++							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
++							 0, fifoemptymsk);
++				}
++			}
++		}
++
++		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
++			depctl.b.nextep = core_if->nextep_seq[ep->num];
++		/* EP enable, IN data in FIFO */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
++
++	} else {
++		/* OUT endpoint */
++		dwc_otg_dev_out_ep_regs_t *out_regs =
++		    core_if->dev_if->out_ep_regs[ep->num];
++
++		depctl.d32 = DWC_READ_REG32(&(out_regs->doepctl));
++		deptsiz.d32 = DWC_READ_REG32(&(out_regs->doeptsiz));
++
++		/* Zero Length Packet */
++		deptsiz.b.xfersize = ep->maxpacket;
++		deptsiz.b.pktcnt = 1;
++
++		if (core_if->dma_enable) {
++			if (!core_if->dma_desc_enable) {
++				DWC_WRITE_REG32(&out_regs->doeptsiz,
++						deptsiz.d32);
++
++				DWC_WRITE_REG32(&(out_regs->doepdma),
++						(uint32_t) ep->dma_addr);
++			}
++		} else {
++			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
++		}
++
++		/* EP enable */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++
++		DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
++
++	}
++}
++
++/**
++ * This function does the setup for a data transfer for EP0 and starts
++ * the transfer.  For an IN transfer, the packets will be loaded into
++ * the appropriate Tx FIFO in the ISR. For OUT transfers, the packets are
++ * unloaded from the Rx FIFO in the ISR.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP0 data.
++ */
++void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	depctl_data_t depctl;
++	deptsiz0_data_t deptsiz;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	dwc_otg_dev_dma_desc_t *dma_desc;
++
++	DWC_DEBUGPL(DBG_PCD, "ep%d-%s xfer_len=%d xfer_cnt=%d "
++		    "xfer_buff=%p start_xfer_buff=%p \n",
++		    ep->num, (ep->is_in ? "IN" : "OUT"), ep->xfer_len,
++		    ep->xfer_count, ep->xfer_buff, ep->start_xfer_buff);
++
++	ep->total_len = ep->xfer_len;
++
++	/* IN endpoint */
++	if (ep->is_in == 1) {
++		dwc_otg_dev_in_ep_regs_t *in_regs =
++		    core_if->dev_if->in_ep_regs[0];
++
++		gnptxsts_data_t gtxstatus;
++
++		if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++			depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
++			if (depctl.b.epena)
++				return;
++		}
++
++		gtxstatus.d32 =
++		    DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
++
++		/* If dedicated FIFO every time flush fifo before enable ep*/
++		if (core_if->en_multiple_tx_fifo && core_if->snpsid >= OTG_CORE_REV_3_00a)
++			dwc_otg_flush_tx_fifo(core_if, ep->tx_fifo_num);
++
++		if (core_if->en_multiple_tx_fifo == 0
++		    && gtxstatus.b.nptxqspcavail == 0
++		    && !core_if->dma_enable) {
++#ifdef DEBUG
++			deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
++			DWC_DEBUGPL(DBG_PCD, "DIEPCTL0=%0x\n",
++				    DWC_READ_REG32(&in_regs->diepctl));
++			DWC_DEBUGPL(DBG_PCD, "DIEPTSIZ0=%0x (sz=%d, pcnt=%d)\n",
++				    deptsiz.d32,
++				    deptsiz.b.xfersize, deptsiz.b.pktcnt);
++			DWC_PRINTF("TX Queue or FIFO Full (0x%0x)\n",
++				   gtxstatus.d32);
++#endif
++			return;
++		}
++
++		depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
++		deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
++
++		/* Zero Length Packet? */
++		if (ep->xfer_len == 0) {
++			deptsiz.b.xfersize = 0;
++			deptsiz.b.pktcnt = 1;
++		} else {
++			/* Program the transfer size and packet count
++			 *      as follows: xfersize = N * maxpacket +
++			 *      short_packet pktcnt = N + (short_packet
++			 *      exist ? 1 : 0)
++			 */
++			if (ep->xfer_len > ep->maxpacket) {
++				ep->xfer_len = ep->maxpacket;
++				deptsiz.b.xfersize = ep->maxpacket;
++			} else {
++				deptsiz.b.xfersize = ep->xfer_len;
++			}
++			deptsiz.b.pktcnt = 1;
++
++		}
++		DWC_DEBUGPL(DBG_PCDV,
++			    "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
++			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
++			    deptsiz.d32);
++
++		/* Write the DMA register */
++		if (core_if->dma_enable) {
++			if (core_if->dma_desc_enable == 0) {
++				DWC_WRITE_REG32(&in_regs->dieptsiz,
++						deptsiz.d32);
++
++				DWC_WRITE_REG32(&(in_regs->diepdma),
++						(uint32_t) ep->dma_addr);
++			} else {
++				dma_desc = core_if->dev_if->in_desc_addr;
++
++				/** DMA Descriptor Setup */
++				dma_desc->status.b.bs = BS_HOST_BUSY;
++				dma_desc->status.b.l = 1;
++				dma_desc->status.b.ioc = 1;
++				dma_desc->status.b.sp =
++				    (ep->xfer_len == ep->maxpacket) ? 0 : 1;
++				dma_desc->status.b.bytes = ep->xfer_len;
++				dma_desc->buf = ep->dma_addr;
++				dma_desc->status.b.sts = 0;
++				dma_desc->status.b.bs = BS_HOST_READY;
++
++				/** DIEPDMA0 Register write */
++				DWC_WRITE_REG32(&in_regs->diepdma,
++						core_if->
++						dev_if->dma_in_desc_addr);
++			}
++		} else {
++			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
++		}
++
++		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
++			depctl.b.nextep = core_if->nextep_seq[ep->num];
++		/* EP enable, IN data in FIFO */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
++
++		/**
++		 * Enable the Non-Periodic Tx FIFO empty interrupt, the
++		 * data will be written into the fifo by the ISR.
++		 */
++		if (!core_if->dma_enable) {
++			if (core_if->en_multiple_tx_fifo == 0) {
++				intr_mask.b.nptxfempty = 1;
++				DWC_MODIFY_REG32(&core_if->
++						 core_global_regs->gintmsk,
++						 intr_mask.d32, intr_mask.d32);
++			} else {
++				/* Enable the Tx FIFO Empty Interrupt for this EP */
++				if (ep->xfer_len > 0) {
++					uint32_t fifoemptymsk = 0;
++					fifoemptymsk |= 1 << ep->num;
++					DWC_MODIFY_REG32(&core_if->
++							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
++							 0, fifoemptymsk);
++				}
++			}
++		}
++	} else {
++		/* OUT endpoint */
++		dwc_otg_dev_out_ep_regs_t *out_regs =
++		    core_if->dev_if->out_ep_regs[0];
++
++		depctl.d32 = DWC_READ_REG32(&out_regs->doepctl);
++		deptsiz.d32 = DWC_READ_REG32(&out_regs->doeptsiz);
++
++		/* Program the transfer size and packet count as follows:
++		 *      xfersize = N * (maxpacket + 4 - (maxpacket % 4))
++		 *      pktcnt = N                                                                                      */
++		/* Zero Length Packet */
++		deptsiz.b.xfersize = ep->maxpacket;
++		deptsiz.b.pktcnt = 1;
++		if (core_if->snpsid >= OTG_CORE_REV_3_00a)
++			deptsiz.b.supcnt = 3;
++
++		DWC_DEBUGPL(DBG_PCDV, "len=%d  xfersize=%d pktcnt=%d\n",
++			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt);
++
++		if (core_if->dma_enable) {
++			if (!core_if->dma_desc_enable) {
++				DWC_WRITE_REG32(&out_regs->doeptsiz,
++						deptsiz.d32);
++
++				DWC_WRITE_REG32(&(out_regs->doepdma),
++						(uint32_t) ep->dma_addr);
++			} else {
++				dma_desc = core_if->dev_if->out_desc_addr;
++
++				/** DMA Descriptor Setup */
++				dma_desc->status.b.bs = BS_HOST_BUSY;
++				if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++					dma_desc->status.b.mtrf = 0;
++					dma_desc->status.b.sr = 0;
++				}
++				dma_desc->status.b.l = 1;
++				dma_desc->status.b.ioc = 1;
++				dma_desc->status.b.bytes = ep->maxpacket;
++				dma_desc->buf = ep->dma_addr;
++				dma_desc->status.b.sts = 0;
++				dma_desc->status.b.bs = BS_HOST_READY;
++
++				/** DOEPDMA0 Register write */
++				DWC_WRITE_REG32(&out_regs->doepdma,
++						core_if->dev_if->
++						dma_out_desc_addr);
++			}
++		} else {
++			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
++		}
++
++		/* EP enable */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++		DWC_WRITE_REG32(&(out_regs->doepctl), depctl.d32);
++	}
++}
++
++/**
++ * This function continues control IN transfers started by
++ * dwc_otg_ep0_start_transfer, when the transfer does not fit in a
++ * single packet.  NOTE: The DIEPCTL0/DOEPCTL0 registers only have one
++ * bit for the packet count.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP0 data.
++ */
++void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	depctl_data_t depctl;
++	deptsiz0_data_t deptsiz;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	dwc_otg_dev_dma_desc_t *dma_desc;
++
++	if (ep->is_in == 1) {
++		dwc_otg_dev_in_ep_regs_t *in_regs =
++		    core_if->dev_if->in_ep_regs[0];
++		gnptxsts_data_t tx_status = {.d32 = 0 };
++
++		tx_status.d32 =
++		    DWC_READ_REG32(&core_if->core_global_regs->gnptxsts);
++		/** @todo Should there be check for room in the Tx
++		 * Status Queue.  If not remove the code above this comment. */
++
++		depctl.d32 = DWC_READ_REG32(&in_regs->diepctl);
++		deptsiz.d32 = DWC_READ_REG32(&in_regs->dieptsiz);
++
++		/* Program the transfer size and packet count
++		 *      as follows: xfersize = N * maxpacket +
++		 *      short_packet pktcnt = N + (short_packet
++		 *      exist ? 1 : 0)
++		 */
++
++		if (core_if->dma_desc_enable == 0) {
++			deptsiz.b.xfersize =
++			    (ep->total_len - ep->xfer_count) >
++			    ep->maxpacket ? ep->maxpacket : (ep->total_len -
++							     ep->xfer_count);
++			deptsiz.b.pktcnt = 1;
++			if (core_if->dma_enable == 0) {
++				ep->xfer_len += deptsiz.b.xfersize;
++			} else {
++				ep->xfer_len = deptsiz.b.xfersize;
++			}
++			DWC_WRITE_REG32(&in_regs->dieptsiz, deptsiz.d32);
++		} else {
++			ep->xfer_len =
++			    (ep->total_len - ep->xfer_count) >
++			    ep->maxpacket ? ep->maxpacket : (ep->total_len -
++							     ep->xfer_count);
++
++			dma_desc = core_if->dev_if->in_desc_addr;
++
++			/** DMA Descriptor Setup */
++			dma_desc->status.b.bs = BS_HOST_BUSY;
++			dma_desc->status.b.l = 1;
++			dma_desc->status.b.ioc = 1;
++			dma_desc->status.b.sp =
++			    (ep->xfer_len == ep->maxpacket) ? 0 : 1;
++			dma_desc->status.b.bytes = ep->xfer_len;
++			dma_desc->buf = ep->dma_addr;
++			dma_desc->status.b.sts = 0;
++			dma_desc->status.b.bs = BS_HOST_READY;
++
++			/** DIEPDMA0 Register write */
++			DWC_WRITE_REG32(&in_regs->diepdma,
++					core_if->dev_if->dma_in_desc_addr);
++		}
++
++		DWC_DEBUGPL(DBG_PCDV,
++			    "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
++			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
++			    deptsiz.d32);
++
++		/* Write the DMA register */
++		if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
++			if (core_if->dma_desc_enable == 0)
++				DWC_WRITE_REG32(&(in_regs->diepdma),
++						(uint32_t) ep->dma_addr);
++		}
++		if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable)
++			depctl.b.nextep = core_if->nextep_seq[ep->num];
++		/* EP enable, IN data in FIFO */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++		DWC_WRITE_REG32(&in_regs->diepctl, depctl.d32);
++
++		/**
++		 * Enable the Non-Periodic Tx FIFO empty interrupt, the
++		 * data will be written into the fifo by the ISR.
++		 */
++		if (!core_if->dma_enable) {
++			if (core_if->en_multiple_tx_fifo == 0) {
++				/* First clear it from GINTSTS */
++				intr_mask.b.nptxfempty = 1;
++				DWC_MODIFY_REG32(&core_if->
++						 core_global_regs->gintmsk,
++						 intr_mask.d32, intr_mask.d32);
++
++			} else {
++				/* Enable the Tx FIFO Empty Interrupt for this EP */
++				if (ep->xfer_len > 0) {
++					uint32_t fifoemptymsk = 0;
++					fifoemptymsk |= 1 << ep->num;
++					DWC_MODIFY_REG32(&core_if->
++							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
++							 0, fifoemptymsk);
++				}
++			}
++		}
++	} else {
++		dwc_otg_dev_out_ep_regs_t *out_regs =
++		    core_if->dev_if->out_ep_regs[0];
++
++		depctl.d32 = DWC_READ_REG32(&out_regs->doepctl);
++		deptsiz.d32 = DWC_READ_REG32(&out_regs->doeptsiz);
++
++		/* Program the transfer size and packet count
++		 *      as follows: xfersize = N * maxpacket +
++		 *      short_packet pktcnt = N + (short_packet
++		 *      exist ? 1 : 0)
++		 */
++		deptsiz.b.xfersize = ep->maxpacket;
++		deptsiz.b.pktcnt = 1;
++
++		if (core_if->dma_desc_enable == 0) {
++			DWC_WRITE_REG32(&out_regs->doeptsiz, deptsiz.d32);
++		} else {
++			dma_desc = core_if->dev_if->out_desc_addr;
++
++			/** DMA Descriptor Setup */
++			dma_desc->status.b.bs = BS_HOST_BUSY;
++			dma_desc->status.b.l = 1;
++			dma_desc->status.b.ioc = 1;
++			dma_desc->status.b.bytes = ep->maxpacket;
++			dma_desc->buf = ep->dma_addr;
++			dma_desc->status.b.sts = 0;
++			dma_desc->status.b.bs = BS_HOST_READY;
++
++			/** DOEPDMA0 Register write */
++			DWC_WRITE_REG32(&out_regs->doepdma,
++					core_if->dev_if->dma_out_desc_addr);
++		}
++
++		DWC_DEBUGPL(DBG_PCDV,
++			    "IN len=%d  xfersize=%d pktcnt=%d [%08x]\n",
++			    ep->xfer_len, deptsiz.b.xfersize, deptsiz.b.pktcnt,
++			    deptsiz.d32);
++
++		/* Write the DMA register */
++		if (core_if->hwcfg2.b.architecture == DWC_INT_DMA_ARCH) {
++			if (core_if->dma_desc_enable == 0)
++				DWC_WRITE_REG32(&(out_regs->doepdma),
++						(uint32_t) ep->dma_addr);
++
++		}
++
++		/* EP enable, IN data in FIFO */
++		depctl.b.cnak = 1;
++		depctl.b.epena = 1;
++		DWC_WRITE_REG32(&out_regs->doepctl, depctl.d32);
++
++	}
++}
++
++#ifdef DEBUG
++void dump_msg(const u8 * buf, unsigned int length)
++{
++	unsigned int start, num, i;
++	char line[52], *p;
++
++	if (length >= 512)
++		return;
++	start = 0;
++	while (length > 0) {
++		num = length < 16u ? length : 16u;
++		p = line;
++		for (i = 0; i < num; ++i) {
++			if (i == 8)
++				*p++ = ' ';
++			DWC_SPRINTF(p, " %02x", buf[i]);
++			p += 3;
++		}
++		*p = 0;
++		DWC_PRINTF("%6x: %s\n", start, line);
++		buf += num;
++		start += num;
++		length -= num;
++	}
++}
++#else
++static inline void dump_msg(const u8 * buf, unsigned int length)
++{
++}
++#endif
++
++/**
++ * This function writes a packet into the Tx FIFO associated with the
++ * EP. For non-periodic EPs the non-periodic Tx FIFO is written.  For
++ * periodic EPs the periodic Tx FIFO associated with the EP is written
++ * with all packets for the next micro-frame.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to write packet for.
++ * @param dma Indicates if DMA is being used.
++ */
++void dwc_otg_ep_write_packet(dwc_otg_core_if_t * core_if, dwc_ep_t * ep,
++			     int dma)
++{
++	/**
++	 * The buffer is padded to DWORD on a per packet basis in
++	 * slave/dma mode if the MPS is not DWORD aligned. The last
++	 * packet, if short, is also padded to a multiple of DWORD.
++	 *
++	 * ep->xfer_buff always starts DWORD aligned in memory and is a
++	 * multiple of DWORD in length
++	 *
++	 * ep->xfer_len can be any number of bytes
++	 *
++	 * ep->xfer_count is a multiple of ep->maxpacket until the last
++	 *	packet
++	 *
++	 * FIFO access is DWORD */
++
++	uint32_t i;
++	uint32_t byte_count;
++	uint32_t dword_count;
++	uint32_t *fifo;
++	uint32_t *data_buff = (uint32_t *) ep->xfer_buff;
++
++	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p)\n", __func__, core_if,
++		    ep);
++	if (ep->xfer_count >= ep->xfer_len) {
++		DWC_WARN("%s() No data for EP%d!!!\n", __func__, ep->num);
++		return;
++	}
++
++	/* Find the byte length of the packet either short packet or MPS */
++	if ((ep->xfer_len - ep->xfer_count) < ep->maxpacket) {
++		byte_count = ep->xfer_len - ep->xfer_count;
++	} else {
++		byte_count = ep->maxpacket;
++	}
++
++	/* Find the DWORD length, padded by extra bytes as neccessary if MPS
++	 * is not a multiple of DWORD */
++	dword_count = (byte_count + 3) / 4;
++
++#ifdef VERBOSE
++	dump_msg(ep->xfer_buff, byte_count);
++#endif
++
++	/**@todo NGS Where are the Periodic Tx FIFO addresses
++	 * intialized?	What should this be? */
++
++	fifo = core_if->data_fifo[ep->num];
++
++	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "fifo=%p buff=%p *p=%08x bc=%d\n",
++		    fifo, data_buff, *data_buff, byte_count);
++
++	if (!dma) {
++		for (i = 0; i < dword_count; i++, data_buff++) {
++			DWC_WRITE_REG32(fifo, *data_buff);
++		}
++	}
++
++	ep->xfer_count += byte_count;
++	ep->xfer_buff += byte_count;
++	ep->dma_addr += byte_count;
++}
++
++/**
++ * Set the EP STALL.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to set the stall on.
++ */
++void dwc_otg_ep_set_stall(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	depctl_data_t depctl;
++	volatile uint32_t *depctl_addr;
++
++	DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
++		    (ep->is_in ? "IN" : "OUT"));
++
++	if (ep->is_in == 1) {
++		depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
++		depctl.d32 = DWC_READ_REG32(depctl_addr);
++
++		/* set the disable and stall bits */
++		if (depctl.b.epena) {
++			depctl.b.epdis = 1;
++		}
++		depctl.b.stall = 1;
++		DWC_WRITE_REG32(depctl_addr, depctl.d32);
++	} else {
++		depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
++		depctl.d32 = DWC_READ_REG32(depctl_addr);
++
++		/* set the stall bit */
++		depctl.b.stall = 1;
++		DWC_WRITE_REG32(depctl_addr, depctl.d32);
++	}
++
++	DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", DWC_READ_REG32(depctl_addr));
++
++	return;
++}
++
++/**
++ * Clear the EP STALL.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to clear stall from.
++ */
++void dwc_otg_ep_clear_stall(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	depctl_data_t depctl;
++	volatile uint32_t *depctl_addr;
++
++	DWC_DEBUGPL(DBG_PCD, "%s ep%d-%s\n", __func__, ep->num,
++		    (ep->is_in ? "IN" : "OUT"));
++
++	if (ep->is_in == 1) {
++		depctl_addr = &(core_if->dev_if->in_ep_regs[ep->num]->diepctl);
++	} else {
++		depctl_addr = &(core_if->dev_if->out_ep_regs[ep->num]->doepctl);
++	}
++
++	depctl.d32 = DWC_READ_REG32(depctl_addr);
++
++	/* clear the stall bits */
++	depctl.b.stall = 0;
++
++	/*
++	 * USB Spec 9.4.5: For endpoints using data toggle, regardless
++	 * of whether an endpoint has the Halt feature set, a
++	 * ClearFeature(ENDPOINT_HALT) request always results in the
++	 * data toggle being reinitialized to DATA0.
++	 */
++	if (ep->type == DWC_OTG_EP_TYPE_INTR ||
++	    ep->type == DWC_OTG_EP_TYPE_BULK) {
++		depctl.b.setd0pid = 1;	/* DATA0 */
++	}
++
++	DWC_WRITE_REG32(depctl_addr, depctl.d32);
++	DWC_DEBUGPL(DBG_PCD, "DEPCTL=%0x\n", DWC_READ_REG32(depctl_addr));
++	return;
++}
++
++/**
++ * This function reads a packet from the Rx FIFO into the destination
++ * buffer. To read SETUP data use dwc_otg_read_setup_packet.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param dest	  Destination buffer for the packet.
++ * @param bytes  Number of bytes to copy to the destination.
++ */
++void dwc_otg_read_packet(dwc_otg_core_if_t * core_if,
++			 uint8_t * dest, uint16_t bytes)
++{
++	int i;
++	int word_count = (bytes + 3) / 4;
++
++	volatile uint32_t *fifo = core_if->data_fifo[0];
++	uint32_t *data_buff = (uint32_t *) dest;
++
++	/**
++	 * @todo Account for the case where _dest is not dword aligned. This
++	 * requires reading data from the FIFO into a uint32_t temp buffer,
++	 * then moving it into the data buffer.
++	 */
++
++	DWC_DEBUGPL((DBG_PCDV | DBG_CILV), "%s(%p,%p,%d)\n", __func__,
++		    core_if, dest, bytes);
++
++	for (i = 0; i < word_count; i++, data_buff++) {
++		*data_buff = DWC_READ_REG32(fifo);
++	}
++
++	return;
++}
++
++/**
++ * This functions reads the device registers and prints them
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++void dwc_otg_dump_dev_registers(dwc_otg_core_if_t * core_if)
++{
++	int i;
++	volatile uint32_t *addr;
++
++	DWC_PRINTF("Device Global Registers\n");
++	addr = &core_if->dev_if->dev_global_regs->dcfg;
++	DWC_PRINTF("DCFG		 @0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++	addr = &core_if->dev_if->dev_global_regs->dctl;
++	DWC_PRINTF("DCTL		 @0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++	addr = &core_if->dev_if->dev_global_regs->dsts;
++	DWC_PRINTF("DSTS		 @0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++	addr = &core_if->dev_if->dev_global_regs->diepmsk;
++	DWC_PRINTF("DIEPMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->dev_if->dev_global_regs->doepmsk;
++	DWC_PRINTF("DOEPMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->dev_if->dev_global_regs->daint;
++	DWC_PRINTF("DAINT	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->dev_if->dev_global_regs->daintmsk;
++	DWC_PRINTF("DAINTMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->dev_if->dev_global_regs->dtknqr1;
++	DWC_PRINTF("DTKNQR1	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	if (core_if->hwcfg2.b.dev_token_q_depth > 6) {
++		addr = &core_if->dev_if->dev_global_regs->dtknqr2;
++		DWC_PRINTF("DTKNQR2	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++	}
++
++	addr = &core_if->dev_if->dev_global_regs->dvbusdis;
++	DWC_PRINTF("DVBUSID	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++
++	addr = &core_if->dev_if->dev_global_regs->dvbuspulse;
++	DWC_PRINTF("DVBUSPULSE	@0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++
++	addr = &core_if->dev_if->dev_global_regs->dtknqr3_dthrctl;
++	DWC_PRINTF("DTKNQR3_DTHRCTL	 @0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++
++	if (core_if->hwcfg2.b.dev_token_q_depth > 22) {
++		addr = &core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
++		DWC_PRINTF("DTKNQR4	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++	}
++
++	addr = &core_if->dev_if->dev_global_regs->dtknqr4_fifoemptymsk;
++	DWC_PRINTF("FIFOEMPMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++
++	if (core_if->hwcfg2.b.multi_proc_int) {
++
++		addr = &core_if->dev_if->dev_global_regs->deachint;
++		DWC_PRINTF("DEACHINT	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->dev_global_regs->deachintmsk;
++		DWC_PRINTF("DEACHINTMSK	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++
++		for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
++			addr =
++			    &core_if->dev_if->
++			    dev_global_regs->diepeachintmsk[i];
++			DWC_PRINTF("DIEPEACHINTMSK[%d]	 @0x%08lX : 0x%08X\n",
++				   i, (unsigned long)addr,
++				   DWC_READ_REG32(addr));
++		}
++
++		for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
++			addr =
++			    &core_if->dev_if->
++			    dev_global_regs->doepeachintmsk[i];
++			DWC_PRINTF("DOEPEACHINTMSK[%d]	 @0x%08lX : 0x%08X\n",
++				   i, (unsigned long)addr,
++				   DWC_READ_REG32(addr));
++		}
++	}
++
++	for (i = 0; i <= core_if->dev_if->num_in_eps; i++) {
++		DWC_PRINTF("Device IN EP %d Registers\n", i);
++		addr = &core_if->dev_if->in_ep_regs[i]->diepctl;
++		DWC_PRINTF("DIEPCTL	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->in_ep_regs[i]->diepint;
++		DWC_PRINTF("DIEPINT	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->in_ep_regs[i]->dieptsiz;
++		DWC_PRINTF("DIETSIZ	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->in_ep_regs[i]->diepdma;
++		DWC_PRINTF("DIEPDMA	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->in_ep_regs[i]->dtxfsts;
++		DWC_PRINTF("DTXFSTS	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->in_ep_regs[i]->diepdmab;
++		DWC_PRINTF("DIEPDMAB	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, 0 /*DWC_READ_REG32(addr) */ );
++	}
++
++	for (i = 0; i <= core_if->dev_if->num_out_eps; i++) {
++		DWC_PRINTF("Device OUT EP %d Registers\n", i);
++		addr = &core_if->dev_if->out_ep_regs[i]->doepctl;
++		DWC_PRINTF("DOEPCTL	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->out_ep_regs[i]->doepint;
++		DWC_PRINTF("DOEPINT	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->out_ep_regs[i]->doeptsiz;
++		DWC_PRINTF("DOETSIZ	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->dev_if->out_ep_regs[i]->doepdma;
++		DWC_PRINTF("DOEPDMA	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		if (core_if->dma_enable) {	/* Don't access this register in SLAVE mode */
++			addr = &core_if->dev_if->out_ep_regs[i]->doepdmab;
++			DWC_PRINTF("DOEPDMAB	 @0x%08lX : 0x%08X\n",
++				   (unsigned long)addr, DWC_READ_REG32(addr));
++		}
++
++	}
++}
++
++/**
++ * This functions reads the SPRAM and prints its content
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++void dwc_otg_dump_spram(dwc_otg_core_if_t * core_if)
++{
++	volatile uint8_t *addr, *start_addr, *end_addr;
++
++	DWC_PRINTF("SPRAM Data:\n");
++	start_addr = (void *)core_if->core_global_regs;
++	DWC_PRINTF("Base Address: 0x%8lX\n", (unsigned long)start_addr);
++	start_addr += 0x00028000;
++	end_addr = (void *)core_if->core_global_regs;
++	end_addr += 0x000280e0;
++
++	for (addr = start_addr; addr < end_addr; addr += 16) {
++		DWC_PRINTF
++		    ("0x%8lX:\t%2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X\n",
++		     (unsigned long)addr, addr[0], addr[1], addr[2], addr[3],
++		     addr[4], addr[5], addr[6], addr[7], addr[8], addr[9],
++		     addr[10], addr[11], addr[12], addr[13], addr[14], addr[15]
++		    );
++	}
++
++	return;
++}
++
++/**
++ * This function reads the host registers and prints them
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++void dwc_otg_dump_host_registers(dwc_otg_core_if_t * core_if)
++{
++	int i;
++	volatile uint32_t *addr;
++
++	DWC_PRINTF("Host Global Registers\n");
++	addr = &core_if->host_if->host_global_regs->hcfg;
++	DWC_PRINTF("HCFG		 @0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++	addr = &core_if->host_if->host_global_regs->hfir;
++	DWC_PRINTF("HFIR		 @0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++	addr = &core_if->host_if->host_global_regs->hfnum;
++	DWC_PRINTF("HFNUM	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->host_if->host_global_regs->hptxsts;
++	DWC_PRINTF("HPTXSTS	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->host_if->host_global_regs->haint;
++	DWC_PRINTF("HAINT	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->host_if->host_global_regs->haintmsk;
++	DWC_PRINTF("HAINTMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	if (core_if->dma_desc_enable) {
++		addr = &core_if->host_if->host_global_regs->hflbaddr;
++		DWC_PRINTF("HFLBADDR	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++	}
++
++	addr = core_if->host_if->hprt0;
++	DWC_PRINTF("HPRT0	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++
++	for (i = 0; i < core_if->core_params->host_channels; i++) {
++		DWC_PRINTF("Host Channel %d Specific Registers\n", i);
++		addr = &core_if->host_if->hc_regs[i]->hcchar;
++		DWC_PRINTF("HCCHAR	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->host_if->hc_regs[i]->hcsplt;
++		DWC_PRINTF("HCSPLT	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->host_if->hc_regs[i]->hcint;
++		DWC_PRINTF("HCINT	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->host_if->hc_regs[i]->hcintmsk;
++		DWC_PRINTF("HCINTMSK	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->host_if->hc_regs[i]->hctsiz;
++		DWC_PRINTF("HCTSIZ	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		addr = &core_if->host_if->hc_regs[i]->hcdma;
++		DWC_PRINTF("HCDMA	 @0x%08lX : 0x%08X\n",
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++		if (core_if->dma_desc_enable) {
++			addr = &core_if->host_if->hc_regs[i]->hcdmab;
++			DWC_PRINTF("HCDMAB	 @0x%08lX : 0x%08X\n",
++				   (unsigned long)addr, DWC_READ_REG32(addr));
++		}
++
++	}
++	return;
++}
++
++/**
++ * This function reads the core global registers and prints them
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++void dwc_otg_dump_global_registers(dwc_otg_core_if_t * core_if)
++{
++	int i, ep_num;
++	volatile uint32_t *addr;
++	char *txfsiz;
++
++	DWC_PRINTF("Core Global Registers\n");
++	addr = &core_if->core_global_regs->gotgctl;
++	DWC_PRINTF("GOTGCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gotgint;
++	DWC_PRINTF("GOTGINT	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gahbcfg;
++	DWC_PRINTF("GAHBCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gusbcfg;
++	DWC_PRINTF("GUSBCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->grstctl;
++	DWC_PRINTF("GRSTCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gintsts;
++	DWC_PRINTF("GINTSTS	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gintmsk;
++	DWC_PRINTF("GINTMSK	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->grxstsr;
++	DWC_PRINTF("GRXSTSR	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->grxfsiz;
++	DWC_PRINTF("GRXFSIZ	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gnptxfsiz;
++	DWC_PRINTF("GNPTXFSIZ @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gnptxsts;
++	DWC_PRINTF("GNPTXSTS	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gi2cctl;
++	DWC_PRINTF("GI2CCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gpvndctl;
++	DWC_PRINTF("GPVNDCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->ggpio;
++	DWC_PRINTF("GGPIO	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->guid;
++	DWC_PRINTF("GUID		 @0x%08lX : 0x%08X\n",
++		   (unsigned long)addr, DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gsnpsid;
++	DWC_PRINTF("GSNPSID	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->ghwcfg1;
++	DWC_PRINTF("GHWCFG1	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->ghwcfg2;
++	DWC_PRINTF("GHWCFG2	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->ghwcfg3;
++	DWC_PRINTF("GHWCFG3	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->ghwcfg4;
++	DWC_PRINTF("GHWCFG4	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->glpmcfg;
++	DWC_PRINTF("GLPMCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gpwrdn;
++	DWC_PRINTF("GPWRDN	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->gdfifocfg;
++	DWC_PRINTF("GDFIFOCFG	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++	addr = &core_if->core_global_regs->adpctl;
++	DWC_PRINTF("ADPCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   dwc_otg_adp_read_reg(core_if));
++	addr = &core_if->core_global_regs->hptxfsiz;
++	DWC_PRINTF("HPTXFSIZ	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++
++	if (core_if->en_multiple_tx_fifo == 0) {
++		ep_num = core_if->hwcfg4.b.num_dev_perio_in_ep;
++		txfsiz = "DPTXFSIZ";
++	} else {
++		ep_num = core_if->hwcfg4.b.num_in_eps;
++		txfsiz = "DIENPTXF";
++	}
++	for (i = 0; i < ep_num; i++) {
++		addr = &core_if->core_global_regs->dtxfsiz[i];
++		DWC_PRINTF("%s[%d] @0x%08lX : 0x%08X\n", txfsiz, i + 1,
++			   (unsigned long)addr, DWC_READ_REG32(addr));
++	}
++	addr = core_if->pcgcctl;
++	DWC_PRINTF("PCGCCTL	 @0x%08lX : 0x%08X\n", (unsigned long)addr,
++		   DWC_READ_REG32(addr));
++}
++
++/**
++ * Flush a Tx FIFO.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param num Tx FIFO to flush.
++ */
++void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t * core_if, const int num)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	volatile grstctl_t greset = {.d32 = 0 };
++	int count = 0;
++
++	DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "Flush Tx FIFO %d\n", num);
++
++	greset.b.txfflsh = 1;
++	greset.b.txfnum = num;
++	DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
++
++	do {
++		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
++		if (++count > 10000) {
++			DWC_WARN("%s() HANG! GRSTCTL=%0x GNPTXSTS=0x%08x\n",
++				 __func__, greset.d32,
++				 DWC_READ_REG32(&global_regs->gnptxsts));
++			break;
++		}
++		dwc_udelay(1);
++	} while (greset.b.txfflsh == 1);
++
++	/* Wait for 3 PHY Clocks */
++	dwc_udelay(1);
++}
++
++/**
++ * Flush Rx FIFO.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	volatile grstctl_t greset = {.d32 = 0 };
++	int count = 0;
++
++	DWC_DEBUGPL((DBG_CIL | DBG_PCDV), "%s\n", __func__);
++	/*
++	 *
++	 */
++	greset.b.rxfflsh = 1;
++	DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
++
++	do {
++		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
++		if (++count > 10000) {
++			DWC_WARN("%s() HANG! GRSTCTL=%0x\n", __func__,
++				 greset.d32);
++			break;
++		}
++		dwc_udelay(1);
++	} while (greset.b.rxfflsh == 1);
++
++	/* Wait for 3 PHY Clocks */
++	dwc_udelay(1);
++}
++
++/**
++ * Do core a soft reset of the core.  Be careful with this because it
++ * resets all the internal state machines of the core.
++ */
++void dwc_otg_core_reset(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	volatile grstctl_t greset = {.d32 = 0 };
++	int count = 0;
++
++	DWC_DEBUGPL(DBG_CILV, "%s\n", __func__);
++	/* Wait for AHB master IDLE state. */
++	do {
++		dwc_udelay(10);
++		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
++		if (++count > 100000) {
++			DWC_WARN("%s() HANG! AHB Idle GRSTCTL=%0x\n", __func__,
++				 greset.d32);
++			return;
++		}
++	}
++	while (greset.b.ahbidle == 0);
++
++	/* Core Soft Reset */
++	count = 0;
++	greset.b.csftrst = 1;
++	DWC_WRITE_REG32(&global_regs->grstctl, greset.d32);
++	do {
++		greset.d32 = DWC_READ_REG32(&global_regs->grstctl);
++		if (++count > 10000) {
++			DWC_WARN("%s() HANG! Soft Reset GRSTCTL=%0x\n",
++				 __func__, greset.d32);
++			break;
++		}
++		dwc_udelay(1);
++	}
++	while (greset.b.csftrst == 1);
++
++	/* Wait for 3 PHY Clocks */
++	dwc_mdelay(100);
++}
++
++uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t * _core_if)
++{
++	return (dwc_otg_mode(_core_if) != DWC_HOST_MODE);
++}
++
++uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t * _core_if)
++{
++	return (dwc_otg_mode(_core_if) == DWC_HOST_MODE);
++}
++
++/**
++ * Register HCD callbacks. The callbacks are used to start and stop
++ * the HCD for interrupt processing.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param cb the HCD callback structure.
++ * @param p pointer to be passed to callback function (usb_hcd*).
++ */
++void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t * core_if,
++					dwc_otg_cil_callbacks_t * cb, void *p)
++{
++	core_if->hcd_cb = cb;
++	cb->p = p;
++}
++
++/**
++ * Register PCD callbacks. The callbacks are used to start and stop
++ * the PCD for interrupt processing.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param cb the PCD callback structure.
++ * @param p pointer to be passed to callback function (pcd*).
++ */
++void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t * core_if,
++					dwc_otg_cil_callbacks_t * cb, void *p)
++{
++	core_if->pcd_cb = cb;
++	cb->p = p;
++}
++
++#ifdef DWC_EN_ISOC
++
++/**
++ * This function writes isoc data per 1 (micro)frame into tx fifo
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ *
++ */
++void write_isoc_frame_data(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	dwc_otg_dev_in_ep_regs_t *ep_regs;
++	dtxfsts_data_t txstatus = {.d32 = 0 };
++	uint32_t len = 0;
++	uint32_t dwords;
++
++	ep->xfer_len = ep->data_per_frame;
++	ep->xfer_count = 0;
++
++	ep_regs = core_if->dev_if->in_ep_regs[ep->num];
++
++	len = ep->xfer_len - ep->xfer_count;
++
++	if (len > ep->maxpacket) {
++		len = ep->maxpacket;
++	}
++
++	dwords = (len + 3) / 4;
++
++	/* While there is space in the queue and space in the FIFO and
++	 * More data to tranfer, Write packets to the Tx FIFO */
++	txstatus.d32 =
++	    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->dtxfsts);
++	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", ep->num, txstatus.d32);
++
++	while (txstatus.b.txfspcavail > dwords &&
++	       ep->xfer_count < ep->xfer_len && ep->xfer_len != 0) {
++		/* Write the FIFO */
++		dwc_otg_ep_write_packet(core_if, ep, 0);
++
++		len = ep->xfer_len - ep->xfer_count;
++		if (len > ep->maxpacket) {
++			len = ep->maxpacket;
++		}
++
++		dwords = (len + 3) / 4;
++		txstatus.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
++				   dtxfsts);
++		DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", ep->num,
++			    txstatus.d32);
++	}
++}
++
++/**
++ * This function initializes a descriptor chain for Isochronous transfer
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ *
++ */
++void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t * core_if,
++				       dwc_ep_t * ep)
++{
++	deptsiz_data_t deptsiz = {.d32 = 0 };
++	depctl_data_t depctl = {.d32 = 0 };
++	dsts_data_t dsts = {.d32 = 0 };
++	volatile uint32_t *addr;
++
++	if (ep->is_in) {
++		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
++	} else {
++		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
++	}
++
++	ep->xfer_len = ep->data_per_frame;
++	ep->xfer_count = 0;
++	ep->xfer_buff = ep->cur_pkt_addr;
++	ep->dma_addr = ep->cur_pkt_dma_addr;
++
++	if (ep->is_in) {
++		/* Program the transfer size and packet count
++		 *      as follows: xfersize = N * maxpacket +
++		 *      short_packet pktcnt = N + (short_packet
++		 *      exist ? 1 : 0)
++		 */
++		deptsiz.b.xfersize = ep->xfer_len;
++		deptsiz.b.pktcnt =
++		    (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
++		deptsiz.b.mc = deptsiz.b.pktcnt;
++		DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->dieptsiz,
++				deptsiz.d32);
++
++		/* Write the DMA register */
++		if (core_if->dma_enable) {
++			DWC_WRITE_REG32(&
++					(core_if->dev_if->in_ep_regs[ep->num]->
++					 diepdma), (uint32_t) ep->dma_addr);
++		}
++	} else {
++		deptsiz.b.pktcnt =
++		    (ep->xfer_len + (ep->maxpacket - 1)) / ep->maxpacket;
++		deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
++
++		DWC_WRITE_REG32(&core_if->dev_if->
++				out_ep_regs[ep->num]->doeptsiz, deptsiz.d32);
++
++		if (core_if->dma_enable) {
++			DWC_WRITE_REG32(&
++					(core_if->dev_if->
++					 out_ep_regs[ep->num]->doepdma),
++					(uint32_t) ep->dma_addr);
++		}
++	}
++
++	/** Enable endpoint, clear nak  */
++
++	depctl.d32 = 0;
++	if (ep->bInterval == 1) {
++		dsts.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++		ep->next_frame = dsts.b.soffn + ep->bInterval;
++
++		if (ep->next_frame & 0x1) {
++			depctl.b.setd1pid = 1;
++		} else {
++			depctl.b.setd0pid = 1;
++		}
++	} else {
++		ep->next_frame += ep->bInterval;
++
++		if (ep->next_frame & 0x1) {
++			depctl.b.setd1pid = 1;
++		} else {
++			depctl.b.setd0pid = 1;
++		}
++	}
++	depctl.b.epena = 1;
++	depctl.b.cnak = 1;
++
++	DWC_MODIFY_REG32(addr, 0, depctl.d32);
++	depctl.d32 = DWC_READ_REG32(addr);
++
++	if (ep->is_in && core_if->dma_enable == 0) {
++		write_isoc_frame_data(core_if, ep);
++	}
++
++}
++#endif /* DWC_EN_ISOC */
++
++static void dwc_otg_set_uninitialized(int32_t * p, int size)
++{
++	int i;
++	for (i = 0; i < size; i++) {
++		p[i] = -1;
++	}
++}
++
++static int dwc_otg_param_initialized(int32_t val)
++{
++	return val != -1;
++}
++
++static int dwc_otg_setup_params(dwc_otg_core_if_t * core_if)
++{
++	int i;
++	core_if->core_params = DWC_ALLOC(sizeof(*core_if->core_params));
++	if (!core_if->core_params) {
++		return -DWC_E_NO_MEMORY;
++	}
++	dwc_otg_set_uninitialized((int32_t *) core_if->core_params,
++				  sizeof(*core_if->core_params) /
++				  sizeof(int32_t));
++	DWC_PRINTF("Setting default values for core params\n");
++	dwc_otg_set_param_otg_cap(core_if, dwc_param_otg_cap_default);
++	dwc_otg_set_param_dma_enable(core_if, dwc_param_dma_enable_default);
++	dwc_otg_set_param_dma_desc_enable(core_if,
++					  dwc_param_dma_desc_enable_default);
++	dwc_otg_set_param_opt(core_if, dwc_param_opt_default);
++	dwc_otg_set_param_dma_burst_size(core_if,
++					 dwc_param_dma_burst_size_default);
++	dwc_otg_set_param_host_support_fs_ls_low_power(core_if,
++						       dwc_param_host_support_fs_ls_low_power_default);
++	dwc_otg_set_param_enable_dynamic_fifo(core_if,
++					      dwc_param_enable_dynamic_fifo_default);
++	dwc_otg_set_param_data_fifo_size(core_if,
++					 dwc_param_data_fifo_size_default);
++	dwc_otg_set_param_dev_rx_fifo_size(core_if,
++					   dwc_param_dev_rx_fifo_size_default);
++	dwc_otg_set_param_dev_nperio_tx_fifo_size(core_if,
++						  dwc_param_dev_nperio_tx_fifo_size_default);
++	dwc_otg_set_param_host_rx_fifo_size(core_if,
++					    dwc_param_host_rx_fifo_size_default);
++	dwc_otg_set_param_host_nperio_tx_fifo_size(core_if,
++						   dwc_param_host_nperio_tx_fifo_size_default);
++	dwc_otg_set_param_host_perio_tx_fifo_size(core_if,
++						  dwc_param_host_perio_tx_fifo_size_default);
++	dwc_otg_set_param_max_transfer_size(core_if,
++					    dwc_param_max_transfer_size_default);
++	dwc_otg_set_param_max_packet_count(core_if,
++					   dwc_param_max_packet_count_default);
++	dwc_otg_set_param_host_channels(core_if,
++					dwc_param_host_channels_default);
++	dwc_otg_set_param_dev_endpoints(core_if,
++					dwc_param_dev_endpoints_default);
++	dwc_otg_set_param_phy_type(core_if, dwc_param_phy_type_default);
++	dwc_otg_set_param_speed(core_if, dwc_param_speed_default);
++	dwc_otg_set_param_host_ls_low_power_phy_clk(core_if,
++						    dwc_param_host_ls_low_power_phy_clk_default);
++	dwc_otg_set_param_phy_ulpi_ddr(core_if, dwc_param_phy_ulpi_ddr_default);
++	dwc_otg_set_param_phy_ulpi_ext_vbus(core_if,
++					    dwc_param_phy_ulpi_ext_vbus_default);
++	dwc_otg_set_param_phy_utmi_width(core_if,
++					 dwc_param_phy_utmi_width_default);
++	dwc_otg_set_param_ts_dline(core_if, dwc_param_ts_dline_default);
++	dwc_otg_set_param_i2c_enable(core_if, dwc_param_i2c_enable_default);
++	dwc_otg_set_param_ulpi_fs_ls(core_if, dwc_param_ulpi_fs_ls_default);
++	dwc_otg_set_param_en_multiple_tx_fifo(core_if,
++					      dwc_param_en_multiple_tx_fifo_default);
++	for (i = 0; i < 15; i++) {
++		dwc_otg_set_param_dev_perio_tx_fifo_size(core_if,
++							 dwc_param_dev_perio_tx_fifo_size_default,
++							 i);
++	}
++
++	for (i = 0; i < 15; i++) {
++		dwc_otg_set_param_dev_tx_fifo_size(core_if,
++						   dwc_param_dev_tx_fifo_size_default,
++						   i);
++	}
++	dwc_otg_set_param_thr_ctl(core_if, dwc_param_thr_ctl_default);
++	dwc_otg_set_param_mpi_enable(core_if, dwc_param_mpi_enable_default);
++	dwc_otg_set_param_pti_enable(core_if, dwc_param_pti_enable_default);
++	dwc_otg_set_param_lpm_enable(core_if, dwc_param_lpm_enable_default);
++	dwc_otg_set_param_ic_usb_cap(core_if, dwc_param_ic_usb_cap_default);
++	dwc_otg_set_param_tx_thr_length(core_if,
++					dwc_param_tx_thr_length_default);
++	dwc_otg_set_param_rx_thr_length(core_if,
++					dwc_param_rx_thr_length_default);
++	dwc_otg_set_param_ahb_thr_ratio(core_if,
++					dwc_param_ahb_thr_ratio_default);
++	dwc_otg_set_param_power_down(core_if, dwc_param_power_down_default);
++	dwc_otg_set_param_reload_ctl(core_if, dwc_param_reload_ctl_default);
++	dwc_otg_set_param_dev_out_nak(core_if, dwc_param_dev_out_nak_default);
++	dwc_otg_set_param_cont_on_bna(core_if, dwc_param_cont_on_bna_default);
++	dwc_otg_set_param_ahb_single(core_if, dwc_param_ahb_single_default);
++	dwc_otg_set_param_otg_ver(core_if, dwc_param_otg_ver_default);
++	dwc_otg_set_param_adp_enable(core_if, dwc_param_adp_enable_default);
++	DWC_PRINTF("Finished setting default values for core params\n");
++
++	return 0;
++}
++
++uint8_t dwc_otg_is_dma_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->dma_enable;
++}
++
++/* Checks if the parameter is outside of its valid range of values */
++#define DWC_OTG_PARAM_TEST(_param_, _low_, _high_) \
++		(((_param_) < (_low_)) || \
++		((_param_) > (_high_)))
++
++/* Parameter access functions */
++int dwc_otg_set_param_otg_cap(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int valid;
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 2)) {
++		DWC_WARN("Wrong value for otg_cap parameter\n");
++		DWC_WARN("otg_cap parameter must be 0,1 or 2\n");
++		retval = -DWC_E_INVALID;
++		goto out;
++	}
++
++	valid = 1;
++	switch (val) {
++	case DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE:
++		if (core_if->hwcfg2.b.op_mode !=
++		    DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
++			valid = 0;
++		break;
++	case DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE:
++		if ((core_if->hwcfg2.b.op_mode !=
++		     DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
++		    && (core_if->hwcfg2.b.op_mode !=
++			DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
++		    && (core_if->hwcfg2.b.op_mode !=
++			DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE)
++		    && (core_if->hwcfg2.b.op_mode !=
++			DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) {
++			valid = 0;
++		}
++		break;
++	case DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE:
++		/* always valid */
++		break;
++	}
++	if (!valid) {
++		if (dwc_otg_param_initialized(core_if->core_params->otg_cap)) {
++			DWC_ERROR
++			    ("%d invalid for otg_cap paremter. Check HW configuration.\n",
++			     val);
++		}
++		val =
++		    (((core_if->hwcfg2.b.op_mode ==
++		       DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG)
++		      || (core_if->hwcfg2.b.op_mode ==
++			  DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG)
++		      || (core_if->hwcfg2.b.op_mode ==
++			  DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE)
++		      || (core_if->hwcfg2.b.op_mode ==
++			  DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST)) ?
++		     DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE :
++		     DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->otg_cap = val;
++out:
++	return retval;
++}
++
++int32_t dwc_otg_get_param_otg_cap(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->otg_cap;
++}
++
++int dwc_otg_set_param_opt(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for opt parameter\n");
++		return -DWC_E_INVALID;
++	}
++	core_if->core_params->opt = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_opt(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->opt;
++}
++
++int dwc_otg_set_param_dma_enable(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for dma enable\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 1) && (core_if->hwcfg2.b.architecture == 0)) {
++		if (dwc_otg_param_initialized(core_if->core_params->dma_enable)) {
++			DWC_ERROR
++			    ("%d invalid for dma_enable paremter. Check HW configuration.\n",
++			     val);
++		}
++		val = 0;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->dma_enable = val;
++	if (val == 0) {
++		dwc_otg_set_param_dma_desc_enable(core_if, 0);
++	}
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dma_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->dma_enable;
++}
++
++int dwc_otg_set_param_dma_desc_enable(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for dma_enable\n");
++		DWC_WARN("dma_desc_enable must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 1)
++	    && ((dwc_otg_get_param_dma_enable(core_if) == 0)
++		|| (core_if->hwcfg4.b.desc_dma == 0))) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->dma_desc_enable)) {
++			DWC_ERROR
++			    ("%d invalid for dma_desc_enable paremter. Check HW configuration.\n",
++			     val);
++		}
++		val = 0;
++		retval = -DWC_E_INVALID;
++	}
++	core_if->core_params->dma_desc_enable = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dma_desc_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->dma_desc_enable;
++}
++
++int dwc_otg_set_param_host_support_fs_ls_low_power(dwc_otg_core_if_t * core_if,
++						   int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for host_support_fs_low_power\n");
++		DWC_WARN("host_support_fs_low_power must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++	core_if->core_params->host_support_fs_ls_low_power = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_host_support_fs_ls_low_power(dwc_otg_core_if_t *
++						       core_if)
++{
++	return core_if->core_params->host_support_fs_ls_low_power;
++}
++
++int dwc_otg_set_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if,
++					  int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for enable_dynamic_fifo\n");
++		DWC_WARN("enable_dynamic_fifo must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 1) && (core_if->hwcfg2.b.dynamic_fifo == 0)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->enable_dynamic_fifo)) {
++			DWC_ERROR
++			    ("%d invalid for enable_dynamic_fifo paremter. Check HW configuration.\n",
++			     val);
++		}
++		val = 0;
++		retval = -DWC_E_INVALID;
++	}
++	core_if->core_params->enable_dynamic_fifo = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->enable_dynamic_fifo;
++}
++
++int dwc_otg_set_param_data_fifo_size(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 32, 32768)) {
++		DWC_WARN("Wrong value for data_fifo_size\n");
++		DWC_WARN("data_fifo_size must be 32-32768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > core_if->hwcfg3.b.dfifo_depth) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->data_fifo_size)) {
++			DWC_ERROR
++			    ("%d invalid for data_fifo_size parameter. Check HW configuration.\n",
++			     val);
++		}
++		val = core_if->hwcfg3.b.dfifo_depth;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->data_fifo_size = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_data_fifo_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->data_fifo_size;
++}
++
++int dwc_otg_set_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
++		DWC_WARN("Wrong value for dev_rx_fifo_size\n");
++		DWC_WARN("dev_rx_fifo_size must be 16-32768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > DWC_READ_REG32(&core_if->core_global_regs->grxfsiz)) {
++		if (dwc_otg_param_initialized(core_if->core_params->dev_rx_fifo_size)) {
++		DWC_WARN("%d invalid for dev_rx_fifo_size parameter\n", val);
++		}
++		val = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->dev_rx_fifo_size = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->dev_rx_fifo_size;
++}
++
++int dwc_otg_set_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if,
++					      int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
++		DWC_WARN("Wrong value for dev_nperio_tx_fifo\n");
++		DWC_WARN("dev_nperio_tx_fifo must be 16-32768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >> 16)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->dev_nperio_tx_fifo_size)) {
++			DWC_ERROR
++			    ("%d invalid for dev_nperio_tx_fifo_size. Check HW configuration.\n",
++			     val);
++		}
++		val =
++		    (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >>
++		     16);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->dev_nperio_tx_fifo_size = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->dev_nperio_tx_fifo_size;
++}
++
++int dwc_otg_set_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if,
++					int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
++		DWC_WARN("Wrong value for host_rx_fifo_size\n");
++		DWC_WARN("host_rx_fifo_size must be 16-32768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > DWC_READ_REG32(&core_if->core_global_regs->grxfsiz)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->host_rx_fifo_size)) {
++			DWC_ERROR
++			    ("%d invalid for host_rx_fifo_size. Check HW configuration.\n",
++			     val);
++		}
++		val = DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->host_rx_fifo_size = val;
++	return retval;
++
++}
++
++int32_t dwc_otg_get_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->host_rx_fifo_size;
++}
++
++int dwc_otg_set_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if,
++					       int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
++		DWC_WARN("Wrong value for host_nperio_tx_fifo_size\n");
++		DWC_WARN("host_nperio_tx_fifo_size must be 16-32768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >> 16)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->host_nperio_tx_fifo_size)) {
++			DWC_ERROR
++			    ("%d invalid for host_nperio_tx_fifo_size. Check HW configuration.\n",
++			     val);
++		}
++		val =
++		    (DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz) >>
++		     16);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->host_nperio_tx_fifo_size = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->host_nperio_tx_fifo_size;
++}
++
++int dwc_otg_set_param_host_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
++					      int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 16, 32768)) {
++		DWC_WARN("Wrong value for host_perio_tx_fifo_size\n");
++		DWC_WARN("host_perio_tx_fifo_size must be 16-32768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > ((core_if->hptxfsiz.d32) >> 16)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->host_perio_tx_fifo_size)) {
++			DWC_ERROR
++			    ("%d invalid for host_perio_tx_fifo_size. Check HW configuration.\n",
++			     val);
++		}
++		val = (core_if->hptxfsiz.d32) >> 16;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->host_perio_tx_fifo_size = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_host_perio_tx_fifo_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->host_perio_tx_fifo_size;
++}
++
++int dwc_otg_set_param_max_transfer_size(dwc_otg_core_if_t * core_if,
++					int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 2047, 524288)) {
++		DWC_WARN("Wrong value for max_transfer_size\n");
++		DWC_WARN("max_transfer_size must be 2047-524288\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val >= (1 << (core_if->hwcfg3.b.xfer_size_cntr_width + 11))) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->max_transfer_size)) {
++			DWC_ERROR
++			    ("%d invalid for max_transfer_size. Check HW configuration.\n",
++			     val);
++		}
++		val =
++		    ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 11)) -
++		     1);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->max_transfer_size = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_max_transfer_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->max_transfer_size;
++}
++
++int dwc_otg_set_param_max_packet_count(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 15, 511)) {
++		DWC_WARN("Wrong value for max_packet_count\n");
++		DWC_WARN("max_packet_count must be 15-511\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > (1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4))) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->max_packet_count)) {
++			DWC_ERROR
++			    ("%d invalid for max_packet_count. Check HW configuration.\n",
++			     val);
++		}
++		val =
++		    ((1 << (core_if->hwcfg3.b.packet_size_cntr_width + 4)) - 1);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->max_packet_count = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_max_packet_count(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->max_packet_count;
++}
++
++int dwc_otg_set_param_host_channels(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 1, 16)) {
++		DWC_WARN("Wrong value for host_channels\n");
++		DWC_WARN("host_channels must be 1-16\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > (core_if->hwcfg2.b.num_host_chan + 1)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->host_channels)) {
++			DWC_ERROR
++			    ("%d invalid for host_channels. Check HW configurations.\n",
++			     val);
++		}
++		val = (core_if->hwcfg2.b.num_host_chan + 1);
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->host_channels = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_host_channels(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->host_channels;
++}
++
++int dwc_otg_set_param_dev_endpoints(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 1, 15)) {
++		DWC_WARN("Wrong value for dev_endpoints\n");
++		DWC_WARN("dev_endpoints must be 1-15\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val > (core_if->hwcfg2.b.num_dev_ep)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->dev_endpoints)) {
++			DWC_ERROR
++			    ("%d invalid for dev_endpoints. Check HW configurations.\n",
++			     val);
++		}
++		val = core_if->hwcfg2.b.num_dev_ep;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->dev_endpoints = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dev_endpoints(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->dev_endpoints;
++}
++
++int dwc_otg_set_param_phy_type(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	int valid = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 2)) {
++		DWC_WARN("Wrong value for phy_type\n");
++		DWC_WARN("phy_type must be 0,1 or 2\n");
++		return -DWC_E_INVALID;
++	}
++#ifndef NO_FS_PHY_HW_CHECKS
++	if ((val == DWC_PHY_TYPE_PARAM_UTMI) &&
++	    ((core_if->hwcfg2.b.hs_phy_type == 1) ||
++	     (core_if->hwcfg2.b.hs_phy_type == 3))) {
++		valid = 1;
++	} else if ((val == DWC_PHY_TYPE_PARAM_ULPI) &&
++		   ((core_if->hwcfg2.b.hs_phy_type == 2) ||
++		    (core_if->hwcfg2.b.hs_phy_type == 3))) {
++		valid = 1;
++	} else if ((val == DWC_PHY_TYPE_PARAM_FS) &&
++		   (core_if->hwcfg2.b.fs_phy_type == 1)) {
++		valid = 1;
++	}
++	if (!valid) {
++		if (dwc_otg_param_initialized(core_if->core_params->phy_type)) {
++			DWC_ERROR
++			    ("%d invalid for phy_type. Check HW configurations.\n",
++			     val);
++		}
++		if (core_if->hwcfg2.b.hs_phy_type) {
++			if ((core_if->hwcfg2.b.hs_phy_type == 3) ||
++			    (core_if->hwcfg2.b.hs_phy_type == 1)) {
++				val = DWC_PHY_TYPE_PARAM_UTMI;
++			} else {
++				val = DWC_PHY_TYPE_PARAM_ULPI;
++			}
++		}
++		retval = -DWC_E_INVALID;
++	}
++#endif
++	core_if->core_params->phy_type = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_phy_type(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->phy_type;
++}
++
++int dwc_otg_set_param_speed(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for speed parameter\n");
++		DWC_WARN("max_speed parameter must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++	if ((val == 0)
++	    && dwc_otg_get_param_phy_type(core_if) == DWC_PHY_TYPE_PARAM_FS) {
++		if (dwc_otg_param_initialized(core_if->core_params->speed)) {
++			DWC_ERROR
++			    ("%d invalid for speed paremter. Check HW configuration.\n",
++			     val);
++		}
++		val =
++		    (dwc_otg_get_param_phy_type(core_if) ==
++		     DWC_PHY_TYPE_PARAM_FS ? 1 : 0);
++		retval = -DWC_E_INVALID;
++	}
++	core_if->core_params->speed = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_speed(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->speed;
++}
++
++int dwc_otg_set_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t * core_if,
++						int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN
++		    ("Wrong value for host_ls_low_power_phy_clk parameter\n");
++		DWC_WARN("host_ls_low_power_phy_clk must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ)
++	    && (dwc_otg_get_param_phy_type(core_if) == DWC_PHY_TYPE_PARAM_FS)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->host_ls_low_power_phy_clk)) {
++			DWC_ERROR
++			    ("%d invalid for host_ls_low_power_phy_clk. Check HW configuration.\n",
++			     val);
++		}
++		val =
++		    (dwc_otg_get_param_phy_type(core_if) ==
++		     DWC_PHY_TYPE_PARAM_FS) ?
++		    DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ :
++		    DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->host_ls_low_power_phy_clk = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->host_ls_low_power_phy_clk;
++}
++
++int dwc_otg_set_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for phy_ulpi_ddr\n");
++		DWC_WARN("phy_upli_ddr must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->phy_ulpi_ddr = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->phy_ulpi_ddr;
++}
++
++int dwc_otg_set_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if,
++					int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong valaue for phy_ulpi_ext_vbus\n");
++		DWC_WARN("phy_ulpi_ext_vbus must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->phy_ulpi_ext_vbus = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->phy_ulpi_ext_vbus;
++}
++
++int dwc_otg_set_param_phy_utmi_width(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 8, 8) && DWC_OTG_PARAM_TEST(val, 16, 16)) {
++		DWC_WARN("Wrong valaue for phy_utmi_width\n");
++		DWC_WARN("phy_utmi_width must be 8 or 16\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->phy_utmi_width = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_phy_utmi_width(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->phy_utmi_width;
++}
++
++int dwc_otg_set_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong valaue for ulpi_fs_ls\n");
++		DWC_WARN("ulpi_fs_ls must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->ulpi_fs_ls = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->ulpi_fs_ls;
++}
++
++int dwc_otg_set_param_ts_dline(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong valaue for ts_dline\n");
++		DWC_WARN("ts_dline must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->ts_dline = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_ts_dline(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->ts_dline;
++}
++
++int dwc_otg_set_param_i2c_enable(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong valaue for i2c_enable\n");
++		DWC_WARN("i2c_enable must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++#ifndef NO_FS_PHY_HW_CHECK
++	if (val == 1 && core_if->hwcfg3.b.i2c == 0) {
++		if (dwc_otg_param_initialized(core_if->core_params->i2c_enable)) {
++			DWC_ERROR
++			    ("%d invalid for i2c_enable. Check HW configuration.\n",
++			     val);
++		}
++		val = 0;
++		retval = -DWC_E_INVALID;
++	}
++#endif
++
++	core_if->core_params->i2c_enable = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_i2c_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->i2c_enable;
++}
++
++int dwc_otg_set_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
++					     int32_t val, int fifo_num)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 4, 768)) {
++		DWC_WARN("Wrong value for dev_perio_tx_fifo_size\n");
++		DWC_WARN("dev_perio_tx_fifo_size must be 4-768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val >
++	    (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]))) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->dev_perio_tx_fifo_size[fifo_num])) {
++			DWC_ERROR
++			    ("`%d' invalid for parameter `dev_perio_fifo_size_%d'. Check HW configuration.\n",
++			     val, fifo_num);
++		}
++		val = (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]));
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->dev_perio_tx_fifo_size[fifo_num] = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
++						 int fifo_num)
++{
++	return core_if->core_params->dev_perio_tx_fifo_size[fifo_num];
++}
++
++int dwc_otg_set_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if,
++					  int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong valaue for en_multiple_tx_fifo,\n");
++		DWC_WARN("en_multiple_tx_fifo must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val == 1 && core_if->hwcfg4.b.ded_fifo_en == 0) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->en_multiple_tx_fifo)) {
++			DWC_ERROR
++			    ("%d invalid for parameter en_multiple_tx_fifo. Check HW configuration.\n",
++			     val);
++		}
++		val = 0;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->en_multiple_tx_fifo = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->en_multiple_tx_fifo;
++}
++
++int dwc_otg_set_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if, int32_t val,
++				       int fifo_num)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 4, 768)) {
++		DWC_WARN("Wrong value for dev_tx_fifo_size\n");
++		DWC_WARN("dev_tx_fifo_size must be 4-768\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val >
++	    (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]))) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->dev_tx_fifo_size[fifo_num])) {
++			DWC_ERROR
++			    ("`%d' invalid for parameter `dev_tx_fifo_size_%d'. Check HW configuration.\n",
++			     val, fifo_num);
++		}
++		val = (DWC_READ_REG32(&core_if->core_global_regs->dtxfsiz[fifo_num]));
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->dev_tx_fifo_size[fifo_num] = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
++					   int fifo_num)
++{
++	return core_if->core_params->dev_tx_fifo_size[fifo_num];
++}
++
++int dwc_otg_set_param_thr_ctl(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 7)) {
++		DWC_WARN("Wrong value for thr_ctl\n");
++		DWC_WARN("thr_ctl must be 0-7\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val != 0) &&
++	    (!dwc_otg_get_param_dma_enable(core_if) ||
++	     !core_if->hwcfg4.b.ded_fifo_en)) {
++		if (dwc_otg_param_initialized(core_if->core_params->thr_ctl)) {
++			DWC_ERROR
++			    ("%d invalid for parameter thr_ctl. Check HW configuration.\n",
++			     val);
++		}
++		val = 0;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->thr_ctl = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_thr_ctl(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->thr_ctl;
++}
++
++int dwc_otg_set_param_lpm_enable(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("Wrong value for lpm_enable\n");
++		DWC_WARN("lpm_enable must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val && !core_if->hwcfg3.b.otg_lpm_en) {
++		if (dwc_otg_param_initialized(core_if->core_params->lpm_enable)) {
++			DWC_ERROR
++			    ("%d invalid for parameter lpm_enable. Check HW configuration.\n",
++			     val);
++		}
++		val = 0;
++		retval = -DWC_E_INVALID;
++	}
++
++	core_if->core_params->lpm_enable = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_lpm_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->lpm_enable;
++}
++
++int dwc_otg_set_param_tx_thr_length(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 8, 128)) {
++		DWC_WARN("Wrong valaue for tx_thr_length\n");
++		DWC_WARN("tx_thr_length must be 8 - 128\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->tx_thr_length = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_tx_thr_length(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->tx_thr_length;
++}
++
++int dwc_otg_set_param_rx_thr_length(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 8, 128)) {
++		DWC_WARN("Wrong valaue for rx_thr_length\n");
++		DWC_WARN("rx_thr_length must be 8 - 128\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->rx_thr_length = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_rx_thr_length(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->rx_thr_length;
++}
++
++int dwc_otg_set_param_dma_burst_size(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	if (DWC_OTG_PARAM_TEST(val, 1, 1) &&
++	    DWC_OTG_PARAM_TEST(val, 4, 4) &&
++	    DWC_OTG_PARAM_TEST(val, 8, 8) &&
++	    DWC_OTG_PARAM_TEST(val, 16, 16) &&
++	    DWC_OTG_PARAM_TEST(val, 32, 32) &&
++	    DWC_OTG_PARAM_TEST(val, 64, 64) &&
++	    DWC_OTG_PARAM_TEST(val, 128, 128) &&
++	    DWC_OTG_PARAM_TEST(val, 256, 256)) {
++		DWC_WARN("`%d' invalid for parameter `dma_burst_size'\n", val);
++		return -DWC_E_INVALID;
++	}
++	core_if->core_params->dma_burst_size = val;
++	return 0;
++}
++
++int32_t dwc_otg_get_param_dma_burst_size(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->dma_burst_size;
++}
++
++int dwc_otg_set_param_pti_enable(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `pti_enable'\n", val);
++		return -DWC_E_INVALID;
++	}
++	if (val && (core_if->snpsid < OTG_CORE_REV_2_72a)) {
++		if (dwc_otg_param_initialized(core_if->core_params->pti_enable)) {
++			DWC_ERROR
++			    ("%d invalid for parameter pti_enable. Check HW configuration.\n",
++			     val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->pti_enable = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_pti_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->pti_enable;
++}
++
++int dwc_otg_set_param_mpi_enable(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `mpi_enable'\n", val);
++		return -DWC_E_INVALID;
++	}
++	if (val && (core_if->hwcfg2.b.multi_proc_int == 0)) {
++		if (dwc_otg_param_initialized(core_if->core_params->mpi_enable)) {
++			DWC_ERROR
++			    ("%d invalid for parameter mpi_enable. Check HW configuration.\n",
++			     val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->mpi_enable = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_mpi_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->mpi_enable;
++}
++
++int dwc_otg_set_param_adp_enable(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `adp_enable'\n", val);
++		return -DWC_E_INVALID;
++	}
++	if (val && (core_if->hwcfg3.b.adp_supp == 0)) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->adp_supp_enable)) {
++			DWC_ERROR
++			    ("%d invalid for parameter adp_enable. Check HW configuration.\n",
++			     val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->adp_supp_enable = val;
++	/*Set OTG version 2.0 in case of enabling ADP*/
++	if (val)
++		dwc_otg_set_param_otg_ver(core_if, 1);
++
++	return retval;
++}
++
++int32_t dwc_otg_get_param_adp_enable(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->adp_supp_enable;
++}
++
++int dwc_otg_set_param_ic_usb_cap(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `ic_usb_cap'\n", val);
++		DWC_WARN("ic_usb_cap must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val && (core_if->hwcfg2.b.otg_enable_ic_usb == 0)) {
++		if (dwc_otg_param_initialized(core_if->core_params->ic_usb_cap)) {
++			DWC_ERROR
++			    ("%d invalid for parameter ic_usb_cap. Check HW configuration.\n",
++			     val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->ic_usb_cap = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_ic_usb_cap(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->ic_usb_cap;
++}
++
++int dwc_otg_set_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	int valid = 1;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 3)) {
++		DWC_WARN("`%d' invalid for parameter `ahb_thr_ratio'\n", val);
++		DWC_WARN("ahb_thr_ratio must be 0 - 3\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (val
++	    && (core_if->snpsid < OTG_CORE_REV_2_81a
++		|| !dwc_otg_get_param_thr_ctl(core_if))) {
++		valid = 0;
++	} else if (val
++		   && ((dwc_otg_get_param_tx_thr_length(core_if) / (1 << val)) <
++		       4)) {
++		valid = 0;
++	}
++	if (valid == 0) {
++		if (dwc_otg_param_initialized
++		    (core_if->core_params->ahb_thr_ratio)) {
++			DWC_ERROR
++			    ("%d invalid for parameter ahb_thr_ratio. Check HW configuration.\n",
++			     val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++
++	core_if->core_params->ahb_thr_ratio = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->ahb_thr_ratio;
++}
++
++int dwc_otg_set_param_power_down(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	int valid = 1;
++	hwcfg4_data_t hwcfg4 = {.d32 = 0 };
++	hwcfg4.d32 = DWC_READ_REG32(&core_if->core_global_regs->ghwcfg4);
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 3)) {
++		DWC_WARN("`%d' invalid for parameter `power_down'\n", val);
++		DWC_WARN("power_down must be 0 - 2\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 2) && (core_if->snpsid < OTG_CORE_REV_2_91a)) {
++		valid = 0;
++	}
++	if ((val == 3)
++	    && ((core_if->snpsid < OTG_CORE_REV_3_00a)
++		|| (hwcfg4.b.xhiber == 0))) {
++		valid = 0;
++	}
++	if (valid == 0) {
++		if (dwc_otg_param_initialized(core_if->core_params->power_down)) {
++			DWC_ERROR
++			    ("%d invalid for parameter power_down. Check HW configuration.\n",
++			     val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->power_down = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_power_down(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->power_down;
++}
++
++int dwc_otg_set_param_reload_ctl(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	int valid = 1;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `reload_ctl'\n", val);
++		DWC_WARN("reload_ctl must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 1) && (core_if->snpsid < OTG_CORE_REV_2_92a)) {
++		valid = 0;
++	}
++	if (valid == 0) {
++		if (dwc_otg_param_initialized(core_if->core_params->reload_ctl)) {
++			DWC_ERROR("%d invalid for parameter reload_ctl."
++				  "Check HW configuration.\n", val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->reload_ctl = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_reload_ctl(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->reload_ctl;
++}
++
++int dwc_otg_set_param_dev_out_nak(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	int valid = 1;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `dev_out_nak'\n", val);
++		DWC_WARN("dev_out_nak must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 1) && ((core_if->snpsid < OTG_CORE_REV_2_93a) ||
++		!(core_if->core_params->dma_desc_enable))) {
++		valid = 0;
++	}
++	if (valid == 0) {
++		if (dwc_otg_param_initialized(core_if->core_params->dev_out_nak)) {
++			DWC_ERROR("%d invalid for parameter dev_out_nak."
++				"Check HW configuration.\n", val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->dev_out_nak = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_dev_out_nak(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->dev_out_nak;
++}
++
++int dwc_otg_set_param_cont_on_bna(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	int valid = 1;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `cont_on_bna'\n", val);
++		DWC_WARN("cont_on_bna must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 1) && ((core_if->snpsid < OTG_CORE_REV_2_94a) ||
++		!(core_if->core_params->dma_desc_enable))) {
++			valid = 0;
++	}
++	if (valid == 0) {
++		if (dwc_otg_param_initialized(core_if->core_params->cont_on_bna)) {
++			DWC_ERROR("%d invalid for parameter cont_on_bna."
++				"Check HW configuration.\n", val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->cont_on_bna = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_cont_on_bna(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->cont_on_bna;
++}
++
++int dwc_otg_set_param_ahb_single(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++	int valid = 1;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `ahb_single'\n", val);
++		DWC_WARN("ahb_single must be 0 or 1\n");
++		return -DWC_E_INVALID;
++	}
++
++	if ((val == 1) && (core_if->snpsid < OTG_CORE_REV_2_94a)) {
++			valid = 0;
++	}
++	if (valid == 0) {
++		if (dwc_otg_param_initialized(core_if->core_params->ahb_single)) {
++			DWC_ERROR("%d invalid for parameter ahb_single."
++				"Check HW configuration.\n", val);
++		}
++		retval = -DWC_E_INVALID;
++		val = 0;
++	}
++	core_if->core_params->ahb_single = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_ahb_single(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->ahb_single;
++}
++
++int dwc_otg_set_param_otg_ver(dwc_otg_core_if_t * core_if, int32_t val)
++{
++	int retval = 0;
++
++	if (DWC_OTG_PARAM_TEST(val, 0, 1)) {
++		DWC_WARN("`%d' invalid for parameter `otg_ver'\n", val);
++		DWC_WARN
++		    ("otg_ver must be 0(for OTG 1.3 support) or 1(for OTG 2.0 support)\n");
++		return -DWC_E_INVALID;
++	}
++
++	core_if->core_params->otg_ver = val;
++	return retval;
++}
++
++int32_t dwc_otg_get_param_otg_ver(dwc_otg_core_if_t * core_if)
++{
++	return core_if->core_params->otg_ver;
++}
++
++uint32_t dwc_otg_get_hnpstatus(dwc_otg_core_if_t * core_if)
++{
++	gotgctl_data_t otgctl;
++	otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++	return otgctl.b.hstnegscs;
++}
++
++uint32_t dwc_otg_get_srpstatus(dwc_otg_core_if_t * core_if)
++{
++	gotgctl_data_t otgctl;
++	otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++	return otgctl.b.sesreqscs;
++}
++
++void dwc_otg_set_hnpreq(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	if(core_if->otg_ver == 0) {
++		gotgctl_data_t otgctl;
++		otgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++		otgctl.b.hnpreq = val;
++		DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, otgctl.d32);
++	} else {
++		core_if->otg_sts = val;
++	}
++}
++
++uint32_t dwc_otg_get_gsnpsid(dwc_otg_core_if_t * core_if)
++{
++	return core_if->snpsid;
++}
++
++uint32_t dwc_otg_get_mode(dwc_otg_core_if_t * core_if)
++{
++	gintsts_data_t gintsts;
++	gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++	return gintsts.b.curmode;
++}
++
++uint32_t dwc_otg_get_hnpcapable(dwc_otg_core_if_t * core_if)
++{
++	gusbcfg_data_t usbcfg;
++	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++	return usbcfg.b.hnpcap;
++}
++
++void dwc_otg_set_hnpcapable(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	gusbcfg_data_t usbcfg;
++	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++	usbcfg.b.hnpcap = val;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, usbcfg.d32);
++}
++
++uint32_t dwc_otg_get_srpcapable(dwc_otg_core_if_t * core_if)
++{
++	gusbcfg_data_t usbcfg;
++	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++	return usbcfg.b.srpcap;
++}
++
++void dwc_otg_set_srpcapable(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	gusbcfg_data_t usbcfg;
++	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++	usbcfg.b.srpcap = val;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, usbcfg.d32);
++}
++
++uint32_t dwc_otg_get_devspeed(dwc_otg_core_if_t * core_if)
++{
++	dcfg_data_t dcfg;
++	/* originally: dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg); */
++
++        dcfg.d32 = -1; //GRAYG
++        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)\n", __func__, core_if);
++        if (NULL == core_if)
++                DWC_ERROR("reg request with NULL core_if\n");
++        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)->dev_if(%p)\n", __func__,
++                    core_if, core_if->dev_if);
++        if (NULL == core_if->dev_if)
++                DWC_ERROR("reg request with NULL dev_if\n");
++        DWC_DEBUGPL(DBG_CILV, "%s - core_if(%p)->dev_if(%p)->"
++                    "dev_global_regs(%p)\n", __func__,
++                    core_if, core_if->dev_if,
++                    core_if->dev_if->dev_global_regs);
++        if (NULL == core_if->dev_if->dev_global_regs)
++                DWC_ERROR("reg request with NULL dev_global_regs\n");
++        else {
++                DWC_DEBUGPL(DBG_CILV, "%s - &core_if(%p)->dev_if(%p)->"
++                            "dev_global_regs(%p)->dcfg = %p\n", __func__,
++                            core_if, core_if->dev_if,
++                            core_if->dev_if->dev_global_regs,
++                            &core_if->dev_if->dev_global_regs->dcfg);
++		dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++        }
++	return dcfg.b.devspd;
++}
++
++void dwc_otg_set_devspeed(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	dcfg_data_t dcfg;
++	dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++	dcfg.b.devspd = val;
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, dcfg.d32);
++}
++
++uint32_t dwc_otg_get_busconnected(dwc_otg_core_if_t * core_if)
++{
++	hprt0_data_t hprt0;
++	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
++	return hprt0.b.prtconnsts;
++}
++
++uint32_t dwc_otg_get_enumspeed(dwc_otg_core_if_t * core_if)
++{
++	dsts_data_t dsts;
++	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++	return dsts.b.enumspd;
++}
++
++uint32_t dwc_otg_get_prtpower(dwc_otg_core_if_t * core_if)
++{
++	hprt0_data_t hprt0;
++	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
++	return hprt0.b.prtpwr;
++
++}
++
++uint32_t dwc_otg_get_core_state(dwc_otg_core_if_t * core_if)
++{
++	return core_if->hibernation_suspend;
++}
++
++void dwc_otg_set_prtpower(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	hprt0_data_t hprt0;
++	hprt0.d32 = dwc_otg_read_hprt0(core_if);
++	hprt0.b.prtpwr = val;
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++}
++
++uint32_t dwc_otg_get_prtsuspend(dwc_otg_core_if_t * core_if)
++{
++	hprt0_data_t hprt0;
++	hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
++	return hprt0.b.prtsusp;
++
++}
++
++void dwc_otg_set_prtsuspend(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	hprt0_data_t hprt0;
++	hprt0.d32 = dwc_otg_read_hprt0(core_if);
++	hprt0.b.prtsusp = val;
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++}
++
++uint32_t dwc_otg_get_fr_interval(dwc_otg_core_if_t * core_if)
++{
++	hfir_data_t hfir;
++	hfir.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
++	return hfir.b.frint;
++
++}
++
++void dwc_otg_set_fr_interval(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	hfir_data_t hfir;
++	uint32_t fram_int;
++	fram_int = calc_frame_interval(core_if);
++	hfir.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hfir);
++	if (!core_if->core_params->reload_ctl) {
++		DWC_WARN("\nCannot reload HFIR register.HFIR.HFIRRldCtrl bit is"
++			 "not set to 1.\nShould load driver with reload_ctl=1"
++			 " module parameter\n");
++		return;
++	}
++	switch (fram_int) {
++	case 3750:
++		if ((val < 3350) || (val > 4150)) {
++			DWC_WARN("HFIR interval for HS core and 30 MHz"
++				 "clock freq should be from 3350 to 4150\n");
++			return;
++		}
++		break;
++	case 30000:
++		if ((val < 26820) || (val > 33180)) {
++			DWC_WARN("HFIR interval for FS/LS core and 30 MHz"
++				 "clock freq should be from 26820 to 33180\n");
++			return;
++		}
++		break;
++	case 6000:
++		if ((val < 5360) || (val > 6640)) {
++			DWC_WARN("HFIR interval for HS core and 48 MHz"
++				 "clock freq should be from 5360 to 6640\n");
++			return;
++		}
++		break;
++	case 48000:
++		if ((val < 42912) || (val > 53088)) {
++			DWC_WARN("HFIR interval for FS/LS core and 48 MHz"
++				 "clock freq should be from 42912 to 53088\n");
++			return;
++		}
++		break;
++	case 7500:
++		if ((val < 6700) || (val > 8300)) {
++			DWC_WARN("HFIR interval for HS core and 60 MHz"
++				 "clock freq should be from 6700 to 8300\n");
++			return;
++		}
++		break;
++	case 60000:
++		if ((val < 53640) || (val > 65536)) {
++			DWC_WARN("HFIR interval for FS/LS core and 60 MHz"
++				 "clock freq should be from 53640 to 65536\n");
++			return;
++		}
++		break;
++	default:
++		DWC_WARN("Unknown frame interval\n");
++		return;
++		break;
++
++	}
++	hfir.b.frint = val;
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hfir, hfir.d32);
++}
++
++uint32_t dwc_otg_get_mode_ch_tim(dwc_otg_core_if_t * core_if)
++{
++	hcfg_data_t hcfg;
++	hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
++	return hcfg.b.modechtimen;
++
++}
++
++void dwc_otg_set_mode_ch_tim(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	hcfg_data_t hcfg;
++	hcfg.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->hcfg);
++	hcfg.b.modechtimen = val;
++	DWC_WRITE_REG32(&core_if->host_if->host_global_regs->hcfg, hcfg.d32);
++}
++
++void dwc_otg_set_prtresume(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	hprt0_data_t hprt0;
++	hprt0.d32 = dwc_otg_read_hprt0(core_if);
++	hprt0.b.prtres = val;
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++}
++
++uint32_t dwc_otg_get_remotewakesig(dwc_otg_core_if_t * core_if)
++{
++	dctl_data_t dctl;
++	dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
++	return dctl.b.rmtwkupsig;
++}
++
++uint32_t dwc_otg_get_lpm_portsleepstatus(dwc_otg_core_if_t * core_if)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++
++	DWC_ASSERT(!
++		   ((core_if->lx_state == DWC_OTG_L1) ^ lpmcfg.b.prt_sleep_sts),
++		   "lx_state = %d, lmpcfg.prt_sleep_sts = %d\n",
++		   core_if->lx_state, lpmcfg.b.prt_sleep_sts);
++
++	return lpmcfg.b.prt_sleep_sts;
++}
++
++uint32_t dwc_otg_get_lpm_remotewakeenabled(dwc_otg_core_if_t * core_if)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	return lpmcfg.b.rem_wkup_en;
++}
++
++uint32_t dwc_otg_get_lpmresponse(dwc_otg_core_if_t * core_if)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	return lpmcfg.b.appl_resp;
++}
++
++void dwc_otg_set_lpmresponse(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	lpmcfg.b.appl_resp = val;
++	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
++}
++
++uint32_t dwc_otg_get_hsic_connect(dwc_otg_core_if_t * core_if)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	return lpmcfg.b.hsic_connect;
++}
++
++void dwc_otg_set_hsic_connect(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	lpmcfg.b.hsic_connect = val;
++	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
++}
++
++uint32_t dwc_otg_get_inv_sel_hsic(dwc_otg_core_if_t * core_if)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	return lpmcfg.b.inv_sel_hsic;
++
++}
++
++void dwc_otg_set_inv_sel_hsic(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	glpmcfg_data_t lpmcfg;
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	lpmcfg.b.inv_sel_hsic = val;
++	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
++}
++
++uint32_t dwc_otg_get_gotgctl(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++}
++
++void dwc_otg_set_gotgctl(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(&core_if->core_global_regs->gotgctl, val);
++}
++
++uint32_t dwc_otg_get_gusbcfg(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++}
++
++void dwc_otg_set_gusbcfg(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, val);
++}
++
++uint32_t dwc_otg_get_grxfsiz(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
++}
++
++void dwc_otg_set_grxfsiz(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(&core_if->core_global_regs->grxfsiz, val);
++}
++
++uint32_t dwc_otg_get_gnptxfsiz(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->gnptxfsiz);
++}
++
++void dwc_otg_set_gnptxfsiz(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(&core_if->core_global_regs->gnptxfsiz, val);
++}
++
++uint32_t dwc_otg_get_gpvndctl(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->gpvndctl);
++}
++
++void dwc_otg_set_gpvndctl(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(&core_if->core_global_regs->gpvndctl, val);
++}
++
++uint32_t dwc_otg_get_ggpio(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->ggpio);
++}
++
++void dwc_otg_set_ggpio(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, val);
++}
++
++uint32_t dwc_otg_get_hprt0(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(core_if->host_if->hprt0);
++
++}
++
++void dwc_otg_set_hprt0(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(core_if->host_if->hprt0, val);
++}
++
++uint32_t dwc_otg_get_guid(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->guid);
++}
++
++void dwc_otg_set_guid(dwc_otg_core_if_t * core_if, uint32_t val)
++{
++	DWC_WRITE_REG32(&core_if->core_global_regs->guid, val);
++}
++
++uint32_t dwc_otg_get_hptxfsiz(dwc_otg_core_if_t * core_if)
++{
++	return DWC_READ_REG32(&core_if->core_global_regs->hptxfsiz);
++}
++
++uint16_t dwc_otg_get_otg_version(dwc_otg_core_if_t * core_if)
++{
++	return ((core_if->otg_ver == 1) ? (uint16_t)0x0200 : (uint16_t)0x0103);
++}
++
++/**
++ * Start the SRP timer to detect when the SRP does not complete within
++ * 6 seconds.
++ *
++ * @param core_if the pointer to core_if strucure.
++ */
++void dwc_otg_pcd_start_srp_timer(dwc_otg_core_if_t * core_if)
++{
++	core_if->srp_timer_started = 1;
++	DWC_TIMER_SCHEDULE(core_if->srp_timer, 6000 /* 6 secs */ );
++}
++
++void dwc_otg_initiate_srp(dwc_otg_core_if_t * core_if)
++{
++	uint32_t *addr = (uint32_t *) & (core_if->core_global_regs->gotgctl);
++	gotgctl_data_t mem;
++	gotgctl_data_t val;
++
++	val.d32 = DWC_READ_REG32(addr);
++	if (val.b.sesreq) {
++		DWC_ERROR("Session Request Already active!\n");
++		return;
++	}
++
++	DWC_INFO("Session Request Initated\n");	//NOTICE
++	mem.d32 = DWC_READ_REG32(addr);
++	mem.b.sesreq = 1;
++	DWC_WRITE_REG32(addr, mem.d32);
++
++	/* Start the SRP timer */
++	dwc_otg_pcd_start_srp_timer(core_if);
++	return;
++}
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_cil.h
+@@ -0,0 +1,1464 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil.h $
++ * $Revision: #123 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#if !defined(__DWC_CIL_H__)
++#define __DWC_CIL_H__
++
++#include "dwc_list.h"
++#include "dwc_otg_dbg.h"
++#include "dwc_otg_regs.h"
++
++#include "dwc_otg_core_if.h"
++#include "dwc_otg_adp.h"
++
++/**
++ * @file
++ * This file contains the interface to the Core Interface Layer.
++ */
++
++#ifdef DWC_UTE_CFI
++
++#define MAX_DMA_DESCS_PER_EP	256
++
++/**
++ * Enumeration for the data buffer mode
++ */
++typedef enum _data_buffer_mode {
++	BM_STANDARD = 0,	/* data buffer is in normal mode */
++	BM_SG = 1,		/* data buffer uses the scatter/gather mode */
++	BM_CONCAT = 2,		/* data buffer uses the concatenation mode */
++	BM_CIRCULAR = 3,	/* data buffer uses the circular DMA mode */
++	BM_ALIGN = 4		/* data buffer is in buffer alignment mode */
++} data_buffer_mode_e;
++#endif //DWC_UTE_CFI
++
++/** Macros defined for DWC OTG HW Release version */
++
++#define OTG_CORE_REV_2_60a	0x4F54260A
++#define OTG_CORE_REV_2_71a	0x4F54271A
++#define OTG_CORE_REV_2_72a	0x4F54272A
++#define OTG_CORE_REV_2_80a	0x4F54280A
++#define OTG_CORE_REV_2_81a	0x4F54281A
++#define OTG_CORE_REV_2_90a	0x4F54290A
++#define OTG_CORE_REV_2_91a	0x4F54291A
++#define OTG_CORE_REV_2_92a	0x4F54292A
++#define OTG_CORE_REV_2_93a	0x4F54293A
++#define OTG_CORE_REV_2_94a	0x4F54294A
++#define OTG_CORE_REV_3_00a	0x4F54300A
++
++/**
++ * Information for each ISOC packet.
++ */
++typedef struct iso_pkt_info {
++	uint32_t offset;
++	uint32_t length;
++	int32_t status;
++} iso_pkt_info_t;
++
++/**
++ * The <code>dwc_ep</code> structure represents the state of a single
++ * endpoint when acting in device mode. It contains the data items
++ * needed for an endpoint to be activated and transfer packets.
++ */
++typedef struct dwc_ep {
++	/** EP number used for register address lookup */
++	uint8_t num;
++	/** EP direction 0 = OUT */
++	unsigned is_in:1;
++	/** EP active. */
++	unsigned active:1;
++
++	/**
++	 * Periodic Tx FIFO # for IN EPs For INTR EP set to 0 to use non-periodic
++	 * Tx FIFO. If dedicated Tx FIFOs are enabled Tx FIFO # FOR IN EPs*/
++	unsigned tx_fifo_num:4;
++	/** EP type: 0 - Control, 1 - ISOC,	 2 - BULK,	3 - INTR */
++	unsigned type:2;
++#define DWC_OTG_EP_TYPE_CONTROL	   0
++#define DWC_OTG_EP_TYPE_ISOC	   1
++#define DWC_OTG_EP_TYPE_BULK	   2
++#define DWC_OTG_EP_TYPE_INTR	   3
++
++	/** DATA start PID for INTR and BULK EP */
++	unsigned data_pid_start:1;
++	/** Frame (even/odd) for ISOC EP */
++	unsigned even_odd_frame:1;
++	/** Max Packet bytes */
++	unsigned maxpacket:11;
++
++	/** Max Transfer size */
++	uint32_t maxxfer;
++
++	/** @name Transfer state */
++	/** @{ */
++
++	/**
++	 * Pointer to the beginning of the transfer buffer -- do not modify
++	 * during transfer.
++	 */
++
++	dwc_dma_t dma_addr;
++
++	dwc_dma_t dma_desc_addr;
++	dwc_otg_dev_dma_desc_t *desc_addr;
++
++	uint8_t *start_xfer_buff;
++	/** pointer to the transfer buffer */
++	uint8_t *xfer_buff;
++	/** Number of bytes to transfer */
++	unsigned xfer_len:19;
++	/** Number of bytes transferred. */
++	unsigned xfer_count:19;
++	/** Sent ZLP */
++	unsigned sent_zlp:1;
++	/** Total len for control transfer */
++	unsigned total_len:19;
++
++	/** stall clear flag */
++	unsigned stall_clear_flag:1;
++
++	/** SETUP pkt cnt rollover flag for EP0 out*/
++	unsigned stp_rollover;
++
++#ifdef DWC_UTE_CFI
++	/* The buffer mode */
++	data_buffer_mode_e buff_mode;
++
++	/* The chain of DMA descriptors.
++	 * MAX_DMA_DESCS_PER_EP will be allocated for each active EP.
++	 */
++	dwc_otg_dma_desc_t *descs;
++
++	/* The DMA address of the descriptors chain start */
++	dma_addr_t descs_dma_addr;
++	/** This variable stores the length of the last enqueued request */
++	uint32_t cfi_req_len;
++#endif				//DWC_UTE_CFI
++
++/** Max DMA Descriptor count for any EP */
++#define MAX_DMA_DESC_CNT 256
++	/** Allocated DMA Desc count */
++	uint32_t desc_cnt;
++
++	/** bInterval */
++	uint32_t bInterval;
++	/** Next frame num to setup next ISOC transfer */
++	uint32_t frame_num;
++	/** Indicates SOF number overrun in DSTS */
++	uint8_t frm_overrun;
++
++#ifdef DWC_UTE_PER_IO
++	/** Next frame num for which will be setup DMA Desc */
++	uint32_t xiso_frame_num;
++	/** bInterval */
++	uint32_t xiso_bInterval;
++	/** Count of currently active transfers - shall be either 0 or 1 */
++	int xiso_active_xfers;
++	int xiso_queued_xfers;
++#endif
++#ifdef DWC_EN_ISOC
++	/**
++	 * Variables specific for ISOC EPs
++	 *
++	 */
++	/** DMA addresses of ISOC buffers */
++	dwc_dma_t dma_addr0;
++	dwc_dma_t dma_addr1;
++
++	dwc_dma_t iso_dma_desc_addr;
++	dwc_otg_dev_dma_desc_t *iso_desc_addr;
++
++	/** pointer to the transfer buffers */
++	uint8_t *xfer_buff0;
++	uint8_t *xfer_buff1;
++
++	/** number of ISOC Buffer is processing */
++	uint32_t proc_buf_num;
++	/** Interval of ISOC Buffer processing */
++	uint32_t buf_proc_intrvl;
++	/** Data size for regular frame */
++	uint32_t data_per_frame;
++
++	/* todo - pattern data support is to be implemented in the future */
++	/** Data size for pattern frame */
++	uint32_t data_pattern_frame;
++	/** Frame number of pattern data */
++	uint32_t sync_frame;
++
++	/** bInterval */
++	uint32_t bInterval;
++	/** ISO Packet number per frame */
++	uint32_t pkt_per_frm;
++	/** Next frame num for which will be setup DMA Desc */
++	uint32_t next_frame;
++	/** Number of packets per buffer processing */
++	uint32_t pkt_cnt;
++	/** Info for all isoc packets */
++	iso_pkt_info_t *pkt_info;
++	/** current pkt number */
++	uint32_t cur_pkt;
++	/** current pkt number */
++	uint8_t *cur_pkt_addr;
++	/** current pkt number */
++	uint32_t cur_pkt_dma_addr;
++#endif				/* DWC_EN_ISOC */
++
++/** @} */
++} dwc_ep_t;
++
++/*
++ * Reasons for halting a host channel.
++ */
++typedef enum dwc_otg_halt_status {
++	DWC_OTG_HC_XFER_NO_HALT_STATUS,
++	DWC_OTG_HC_XFER_COMPLETE,
++	DWC_OTG_HC_XFER_URB_COMPLETE,
++	DWC_OTG_HC_XFER_ACK,
++	DWC_OTG_HC_XFER_NAK,
++	DWC_OTG_HC_XFER_NYET,
++	DWC_OTG_HC_XFER_STALL,
++	DWC_OTG_HC_XFER_XACT_ERR,
++	DWC_OTG_HC_XFER_FRAME_OVERRUN,
++	DWC_OTG_HC_XFER_BABBLE_ERR,
++	DWC_OTG_HC_XFER_DATA_TOGGLE_ERR,
++	DWC_OTG_HC_XFER_AHB_ERR,
++	DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE,
++	DWC_OTG_HC_XFER_URB_DEQUEUE
++} dwc_otg_halt_status_e;
++
++/**
++ * Host channel descriptor. This structure represents the state of a single
++ * host channel when acting in host mode. It contains the data items needed to
++ * transfer packets to an endpoint via a host channel.
++ */
++typedef struct dwc_hc {
++	/** Host channel number used for register address lookup */
++	uint8_t hc_num;
++
++	/** Device to access */
++	unsigned dev_addr:7;
++
++	/** EP to access */
++	unsigned ep_num:4;
++
++	/** EP direction. 0: OUT, 1: IN */
++	unsigned ep_is_in:1;
++
++	/**
++	 * EP speed.
++	 * One of the following values:
++	 *	- DWC_OTG_EP_SPEED_LOW
++	 *	- DWC_OTG_EP_SPEED_FULL
++	 *	- DWC_OTG_EP_SPEED_HIGH
++	 */
++	unsigned speed:2;
++#define DWC_OTG_EP_SPEED_LOW	0
++#define DWC_OTG_EP_SPEED_FULL	1
++#define DWC_OTG_EP_SPEED_HIGH	2
++
++	/**
++	 * Endpoint type.
++	 * One of the following values:
++	 *	- DWC_OTG_EP_TYPE_CONTROL: 0
++	 *	- DWC_OTG_EP_TYPE_ISOC: 1
++	 *	- DWC_OTG_EP_TYPE_BULK: 2
++	 *	- DWC_OTG_EP_TYPE_INTR: 3
++	 */
++	unsigned ep_type:2;
++
++	/** Max packet size in bytes */
++	unsigned max_packet:11;
++
++	/**
++	 * PID for initial transaction.
++	 * 0: DATA0,<br>
++	 * 1: DATA2,<br>
++	 * 2: DATA1,<br>
++	 * 3: MDATA (non-Control EP),
++	 *	  SETUP (Control EP)
++	 */
++	unsigned data_pid_start:2;
++#define DWC_OTG_HC_PID_DATA0 0
++#define DWC_OTG_HC_PID_DATA2 1
++#define DWC_OTG_HC_PID_DATA1 2
++#define DWC_OTG_HC_PID_MDATA 3
++#define DWC_OTG_HC_PID_SETUP 3
++
++	/** Number of periodic transactions per (micro)frame */
++	unsigned multi_count:2;
++
++	/** @name Transfer State */
++	/** @{ */
++
++	/** Pointer to the current transfer buffer position. */
++	uint8_t *xfer_buff;
++	/**
++	 * In Buffer DMA mode this buffer will be used
++	 * if xfer_buff is not DWORD aligned.
++	 */
++	dwc_dma_t align_buff;
++	/** Total number of bytes to transfer. */
++	uint32_t xfer_len;
++	/** Number of bytes transferred so far. */
++	uint32_t xfer_count;
++	/** Packet count at start of transfer.*/
++	uint16_t start_pkt_count;
++
++	/**
++	 * Flag to indicate whether the transfer has been started. Set to 1 if
++	 * it has been started, 0 otherwise.
++	 */
++	uint8_t xfer_started;
++
++	/**
++	 * Set to 1 to indicate that a PING request should be issued on this
++	 * channel. If 0, process normally.
++	 */
++	uint8_t do_ping;
++
++	/**
++	 * Set to 1 to indicate that the error count for this transaction is
++	 * non-zero. Set to 0 if the error count is 0.
++	 */
++	uint8_t error_state;
++
++	/**
++	 * Set to 1 to indicate that this channel should be halted the next
++	 * time a request is queued for the channel. This is necessary in
++	 * slave mode if no request queue space is available when an attempt
++	 * is made to halt the channel.
++	 */
++	uint8_t halt_on_queue;
++
++	/**
++	 * Set to 1 if the host channel has been halted, but the core is not
++	 * finished flushing queued requests. Otherwise 0.
++	 */
++	uint8_t halt_pending;
++
++	/**
++	 * Reason for halting the host channel.
++	 */
++	dwc_otg_halt_status_e halt_status;
++
++	/*
++	 * Split settings for the host channel
++	 */
++	uint8_t do_split;		   /**< Enable split for the channel */
++	uint8_t complete_split;	   /**< Enable complete split */
++	uint8_t hub_addr;		   /**< Address of high speed hub */
++
++	uint8_t port_addr;		   /**< Port of the low/full speed device */
++	/** Split transaction position
++	 * One of the following values:
++	 *	  - DWC_HCSPLIT_XACTPOS_MID
++	 *	  - DWC_HCSPLIT_XACTPOS_BEGIN
++	 *	  - DWC_HCSPLIT_XACTPOS_END
++	 *	  - DWC_HCSPLIT_XACTPOS_ALL */
++	uint8_t xact_pos;
++
++	/** Set when the host channel does a short read. */
++	uint8_t short_read;
++
++	/**
++	 * Number of requests issued for this channel since it was assigned to
++	 * the current transfer (not counting PINGs).
++	 */
++	uint8_t requests;
++
++	/**
++	 * Queue Head for the transfer being processed by this channel.
++	 */
++	struct dwc_otg_qh *qh;
++
++	/** @} */
++
++	/** Entry in list of host channels. */
++	 DWC_CIRCLEQ_ENTRY(dwc_hc) hc_list_entry;
++
++	/** @name Descriptor DMA support */
++	/** @{ */
++
++	/** Number of Transfer Descriptors */
++	uint16_t ntd;
++
++	/** Descriptor List DMA address */
++	dwc_dma_t desc_list_addr;
++
++	/** Scheduling micro-frame bitmap. */
++	uint8_t schinfo;
++
++	/** @} */
++} dwc_hc_t;
++
++/**
++ * The following parameters may be specified when starting the module. These
++ * parameters define how the DWC_otg controller should be configured.
++ */
++typedef struct dwc_otg_core_params {
++	int32_t opt;
++
++	/**
++	 * Specifies the OTG capabilities. The driver will automatically
++	 * detect the value for this parameter if none is specified.
++	 * 0 - HNP and SRP capable (default)
++	 * 1 - SRP Only capable
++	 * 2 - No HNP/SRP capable
++	 */
++	int32_t otg_cap;
++
++	/**
++	 * Specifies whether to use slave or DMA mode for accessing the data
++	 * FIFOs. The driver will automatically detect the value for this
++	 * parameter if none is specified.
++	 * 0 - Slave
++	 * 1 - DMA (default, if available)
++	 */
++	int32_t dma_enable;
++
++	/**
++	 * When DMA mode is enabled specifies whether to use address DMA or DMA
++	 * Descriptor mode for accessing the data FIFOs in device mode. The driver
++	 * will automatically detect the value for this if none is specified.
++	 * 0 - address DMA
++	 * 1 - DMA Descriptor(default, if available)
++	 */
++	int32_t dma_desc_enable;
++	/** The DMA Burst size (applicable only for External DMA
++	 * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
++	 */
++	int32_t dma_burst_size;	/* Translate this to GAHBCFG values */
++
++	/**
++	 * Specifies the maximum speed of operation in host and device mode.
++	 * The actual speed depends on the speed of the attached device and
++	 * the value of phy_type. The actual speed depends on the speed of the
++	 * attached device.
++	 * 0 - High Speed (default)
++	 * 1 - Full Speed
++	 */
++	int32_t speed;
++	/** Specifies whether low power mode is supported when attached
++	 *	to a Full Speed or Low Speed device in host mode.
++	 * 0 - Don't support low power mode (default)
++	 * 1 - Support low power mode
++	 */
++	int32_t host_support_fs_ls_low_power;
++
++	/** Specifies the PHY clock rate in low power mode when connected to a
++	 * Low Speed device in host mode. This parameter is applicable only if
++	 * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
++	 * then defaults to 6 MHZ otherwise 48 MHZ.
++	 *
++	 * 0 - 48 MHz
++	 * 1 - 6 MHz
++	 */
++	int32_t host_ls_low_power_phy_clk;
++
++	/**
++	 * 0 - Use cC FIFO size parameters
++	 * 1 - Allow dynamic FIFO sizing (default)
++	 */
++	int32_t enable_dynamic_fifo;
++
++	/** Total number of 4-byte words in the data FIFO memory. This
++	 * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic
++	 * Tx FIFOs.
++	 * 32 to 32768 (default 8192)
++	 * Note: The total FIFO memory depth in the FPGA configuration is 8192.
++	 */
++	int32_t data_fifo_size;
++
++	/** Number of 4-byte words in the Rx FIFO in device mode when dynamic
++	 * FIFO sizing is enabled.
++	 * 16 to 32768 (default 1064)
++	 */
++	int32_t dev_rx_fifo_size;
++
++	/** Number of 4-byte words in the non-periodic Tx FIFO in device mode
++	 * when dynamic FIFO sizing is enabled.
++	 * 16 to 32768 (default 1024)
++	 */
++	int32_t dev_nperio_tx_fifo_size;
++
++	/** Number of 4-byte words in each of the periodic Tx FIFOs in device
++	 * mode when dynamic FIFO sizing is enabled.
++	 * 4 to 768 (default 256)
++	 */
++	uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
++
++	/** Number of 4-byte words in the Rx FIFO in host mode when dynamic
++	 * FIFO sizing is enabled.
++	 * 16 to 32768 (default 1024)
++	 */
++	int32_t host_rx_fifo_size;
++
++	/** Number of 4-byte words in the non-periodic Tx FIFO in host mode
++	 * when Dynamic FIFO sizing is enabled in the core.
++	 * 16 to 32768 (default 1024)
++	 */
++	int32_t host_nperio_tx_fifo_size;
++
++	/** Number of 4-byte words in the host periodic Tx FIFO when dynamic
++	 * FIFO sizing is enabled.
++	 * 16 to 32768 (default 1024)
++	 */
++	int32_t host_perio_tx_fifo_size;
++
++	/** The maximum transfer size supported in bytes.
++	 * 2047 to 65,535  (default 65,535)
++	 */
++	int32_t max_transfer_size;
++
++	/** The maximum number of packets in a transfer.
++	 * 15 to 511  (default 511)
++	 */
++	int32_t max_packet_count;
++
++	/** The number of host channel registers to use.
++	 * 1 to 16 (default 12)
++	 * Note: The FPGA configuration supports a maximum of 12 host channels.
++	 */
++	int32_t host_channels;
++
++	/** The number of endpoints in addition to EP0 available for device
++	 * mode operations.
++	 * 1 to 15 (default 6 IN and OUT)
++	 * Note: The FPGA configuration supports a maximum of 6 IN and OUT
++	 * endpoints in addition to EP0.
++	 */
++	int32_t dev_endpoints;
++
++		/**
++		 * Specifies the type of PHY interface to use. By default, the driver
++		 * will automatically detect the phy_type.
++		 *
++		 * 0 - Full Speed PHY
++		 * 1 - UTMI+ (default)
++		 * 2 - ULPI
++		 */
++	int32_t phy_type;
++
++	/**
++	 * Specifies the UTMI+ Data Width. This parameter is
++	 * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
++	 * PHY_TYPE, this parameter indicates the data width between
++	 * the MAC and the ULPI Wrapper.) Also, this parameter is
++	 * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
++	 * to "8 and 16 bits", meaning that the core has been
++	 * configured to work at either data path width.
++	 *
++	 * 8 or 16 bits (default 16)
++	 */
++	int32_t phy_utmi_width;
++
++	/**
++	 * Specifies whether the ULPI operates at double or single
++	 * data rate. This parameter is only applicable if PHY_TYPE is
++	 * ULPI.
++	 *
++	 * 0 - single data rate ULPI interface with 8 bit wide data
++	 * bus (default)
++	 * 1 - double data rate ULPI interface with 4 bit wide data
++	 * bus
++	 */
++	int32_t phy_ulpi_ddr;
++
++	/**
++	 * Specifies whether to use the internal or external supply to
++	 * drive the vbus with a ULPI phy.
++	 */
++	int32_t phy_ulpi_ext_vbus;
++
++	/**
++	 * Specifies whether to use the I2Cinterface for full speed PHY. This
++	 * parameter is only applicable if PHY_TYPE is FS.
++	 * 0 - No (default)
++	 * 1 - Yes
++	 */
++	int32_t i2c_enable;
++
++	int32_t ulpi_fs_ls;
++
++	int32_t ts_dline;
++
++	/**
++	 * Specifies whether dedicated transmit FIFOs are
++	 * enabled for non periodic IN endpoints in device mode
++	 * 0 - No
++	 * 1 - Yes
++	 */
++	int32_t en_multiple_tx_fifo;
++
++	/** Number of 4-byte words in each of the Tx FIFOs in device
++	 * mode when dynamic FIFO sizing is enabled.
++	 * 4 to 768 (default 256)
++	 */
++	uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
++
++	/** Thresholding enable flag-
++	 * bit 0 - enable non-ISO Tx thresholding
++	 * bit 1 - enable ISO Tx thresholding
++	 * bit 2 - enable Rx thresholding
++	 */
++	uint32_t thr_ctl;
++
++	/** Thresholding length for Tx
++	 *	FIFOs in 32 bit DWORDs
++	 */
++	uint32_t tx_thr_length;
++
++	/** Thresholding length for Rx
++	 *	FIFOs in 32 bit DWORDs
++	 */
++	uint32_t rx_thr_length;
++
++	/**
++	 * Specifies whether LPM (Link Power Management) support is enabled
++	 */
++	int32_t lpm_enable;
++
++	/** Per Transfer Interrupt
++	 *	mode enable flag
++	 * 1 - Enabled
++	 * 0 - Disabled
++	 */
++	int32_t pti_enable;
++
++	/** Multi Processor Interrupt
++	 *	mode enable flag
++	 * 1 - Enabled
++	 * 0 - Disabled
++	 */
++	int32_t mpi_enable;
++
++	/** IS_USB Capability
++	 * 1 - Enabled
++	 * 0 - Disabled
++	 */
++	int32_t ic_usb_cap;
++
++	/** AHB Threshold Ratio
++	 * 2'b00 AHB Threshold = 	MAC Threshold
++	 * 2'b01 AHB Threshold = 1/2 	MAC Threshold
++	 * 2'b10 AHB Threshold = 1/4	MAC Threshold
++	 * 2'b11 AHB Threshold = 1/8	MAC Threshold
++	 */
++	int32_t ahb_thr_ratio;
++
++	/** ADP Support
++	 * 1 - Enabled
++	 * 0 - Disabled
++	 */
++	int32_t adp_supp_enable;
++
++	/** HFIR Reload Control
++	 * 0 - The HFIR cannot be reloaded dynamically.
++	 * 1 - Allow dynamic reloading of the HFIR register during runtime.
++	 */
++	int32_t reload_ctl;
++
++	/** DCFG: Enable device Out NAK
++	 * 0 - The core does not set NAK after Bulk Out transfer complete.
++	 * 1 - The core sets NAK after Bulk OUT transfer complete.
++	 */
++	int32_t dev_out_nak;
++
++	/** DCFG: Enable Continue on BNA
++	 * After receiving BNA interrupt the core disables the endpoint,when the
++	 * endpoint is re-enabled by the application the core starts processing
++	 * 0 - from the DOEPDMA descriptor
++	 * 1 - from the descriptor which received the BNA.
++	 */
++	int32_t cont_on_bna;
++
++	/** GAHBCFG: AHB Single Support
++	 * This bit when programmed supports SINGLE transfers for remainder
++	 * data in a transfer for DMA mode of operation.
++	 * 0 - in this case the remainder data will be sent using INCR burst size.
++	 * 1 - in this case the remainder data will be sent using SINGLE burst size.
++	 */
++	int32_t ahb_single;
++
++	/** Core Power down mode
++	 * 0 - No Power Down is enabled
++	 * 1 - Reserved
++	 * 2 - Complete Power Down (Hibernation)
++	 */
++	int32_t power_down;
++
++	/** OTG revision supported
++	 * 0 - OTG 1.3 revision
++	 * 1 - OTG 2.0 revision
++	 */
++	int32_t otg_ver;
++
++} dwc_otg_core_params_t;
++
++#ifdef DEBUG
++struct dwc_otg_core_if;
++typedef struct hc_xfer_info {
++	struct dwc_otg_core_if *core_if;
++	dwc_hc_t *hc;
++} hc_xfer_info_t;
++#endif
++
++typedef struct ep_xfer_info {
++	struct dwc_otg_core_if *core_if;
++	dwc_ep_t *ep;
++	uint8_t state;
++} ep_xfer_info_t;
++/*
++ * Device States
++ */
++typedef enum dwc_otg_lx_state {
++	/** On state */
++	DWC_OTG_L0,
++	/** LPM sleep state*/
++	DWC_OTG_L1,
++	/** USB suspend state*/
++	DWC_OTG_L2,
++	/** Off state*/
++	DWC_OTG_L3
++} dwc_otg_lx_state_e;
++
++struct dwc_otg_global_regs_backup {
++	uint32_t gotgctl_local;
++	uint32_t gintmsk_local;
++	uint32_t gahbcfg_local;
++	uint32_t gusbcfg_local;
++	uint32_t grxfsiz_local;
++	uint32_t gnptxfsiz_local;
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	uint32_t glpmcfg_local;
++#endif
++	uint32_t gi2cctl_local;
++	uint32_t hptxfsiz_local;
++	uint32_t pcgcctl_local;
++	uint32_t gdfifocfg_local;
++	uint32_t dtxfsiz_local[MAX_EPS_CHANNELS];
++	uint32_t gpwrdn_local;
++	uint32_t xhib_pcgcctl;
++	uint32_t xhib_gpwrdn;
++};
++
++struct dwc_otg_host_regs_backup {
++	uint32_t hcfg_local;
++	uint32_t haintmsk_local;
++	uint32_t hcintmsk_local[MAX_EPS_CHANNELS];
++	uint32_t hprt0_local;
++	uint32_t hfir_local;
++};
++
++struct dwc_otg_dev_regs_backup {
++	uint32_t dcfg;
++	uint32_t dctl;
++	uint32_t daintmsk;
++	uint32_t diepmsk;
++	uint32_t doepmsk;
++	uint32_t diepctl[MAX_EPS_CHANNELS];
++	uint32_t dieptsiz[MAX_EPS_CHANNELS];
++	uint32_t diepdma[MAX_EPS_CHANNELS];
++};
++/**
++ * The <code>dwc_otg_core_if</code> structure contains information needed to manage
++ * the DWC_otg controller acting in either host or device mode. It
++ * represents the programming view of the controller as a whole.
++ */
++struct dwc_otg_core_if {
++	/** Parameters that define how the core should be configured.*/
++	dwc_otg_core_params_t *core_params;
++
++	/** Core Global registers starting at offset 000h. */
++	dwc_otg_core_global_regs_t *core_global_regs;
++
++	/** Device-specific information */
++	dwc_otg_dev_if_t *dev_if;
++	/** Host-specific information */
++	dwc_otg_host_if_t *host_if;
++
++	/** Value from SNPSID register */
++	uint32_t snpsid;
++
++	/*
++	 * Set to 1 if the core PHY interface bits in USBCFG have been
++	 * initialized.
++	 */
++	uint8_t phy_init_done;
++
++	/*
++	 * SRP Success flag, set by srp success interrupt in FS I2C mode
++	 */
++	uint8_t srp_success;
++	uint8_t srp_timer_started;
++	/** Timer for SRP. If it expires before SRP is successful
++	 * clear the SRP. */
++	dwc_timer_t *srp_timer;
++
++#ifdef DWC_DEV_SRPCAP
++	/* This timer is needed to power on the hibernated host core if SRP is not
++	 * initiated on connected SRP capable device for limited period of time
++	 */
++	uint8_t pwron_timer_started;
++	dwc_timer_t *pwron_timer;
++#endif
++	/* Common configuration information */
++	/** Power and Clock Gating Control Register */
++	volatile uint32_t *pcgcctl;
++#define DWC_OTG_PCGCCTL_OFFSET 0xE00
++
++	/** Push/pop addresses for endpoints or host channels.*/
++	uint32_t *data_fifo[MAX_EPS_CHANNELS];
++#define DWC_OTG_DATA_FIFO_OFFSET 0x1000
++#define DWC_OTG_DATA_FIFO_SIZE 0x1000
++
++	/** Total RAM for FIFOs (Bytes) */
++	uint16_t total_fifo_size;
++	/** Size of Rx FIFO (Bytes) */
++	uint16_t rx_fifo_size;
++	/** Size of Non-periodic Tx FIFO (Bytes) */
++	uint16_t nperio_tx_fifo_size;
++
++	/** 1 if DMA is enabled, 0 otherwise. */
++	uint8_t dma_enable;
++
++	/** 1 if DMA descriptor is enabled, 0 otherwise. */
++	uint8_t dma_desc_enable;
++
++	/** 1 if PTI Enhancement mode is enabled, 0 otherwise. */
++	uint8_t pti_enh_enable;
++
++	/** 1 if MPI Enhancement mode is enabled, 0 otherwise. */
++	uint8_t multiproc_int_enable;
++
++	/** 1 if dedicated Tx FIFOs are enabled, 0 otherwise. */
++	uint8_t en_multiple_tx_fifo;
++
++	/** Set to 1 if multiple packets of a high-bandwidth transfer is in
++	 * process of being queued */
++	uint8_t queuing_high_bandwidth;
++
++	/** Hardware Configuration -- stored here for convenience.*/
++	hwcfg1_data_t hwcfg1;
++	hwcfg2_data_t hwcfg2;
++	hwcfg3_data_t hwcfg3;
++	hwcfg4_data_t hwcfg4;
++	fifosize_data_t hptxfsiz;
++
++	/** Host and Device Configuration -- stored here for convenience.*/
++	hcfg_data_t hcfg;
++	dcfg_data_t dcfg;
++
++	/** The operational State, during transations
++	 * (a_host>>a_peripherial and b_device=>b_host) this may not
++	 * match the core but allows the software to determine
++	 * transitions.
++	 */
++	uint8_t op_state;
++
++	/**
++	 * Set to 1 if the HCD needs to be restarted on a session request
++	 * interrupt. This is required if no connector ID status change has
++	 * occurred since the HCD was last disconnected.
++	 */
++	uint8_t restart_hcd_on_session_req;
++
++	/** HCD callbacks */
++	/** A-Device is a_host */
++#define A_HOST		(1)
++	/** A-Device is a_suspend */
++#define A_SUSPEND	(2)
++	/** A-Device is a_peripherial */
++#define A_PERIPHERAL	(3)
++	/** B-Device is operating as a Peripheral. */
++#define B_PERIPHERAL	(4)
++	/** B-Device is operating as a Host. */
++#define B_HOST		(5)
++
++	/** HCD callbacks */
++	struct dwc_otg_cil_callbacks *hcd_cb;
++	/** PCD callbacks */
++	struct dwc_otg_cil_callbacks *pcd_cb;
++
++	/** Device mode Periodic Tx FIFO Mask */
++	uint32_t p_tx_msk;
++	/** Device mode Periodic Tx FIFO Mask */
++	uint32_t tx_msk;
++
++	/** Workqueue object used for handling several interrupts */
++	dwc_workq_t *wq_otg;
++
++	/** Timer object used for handling "Wakeup Detected" Interrupt */
++	dwc_timer_t *wkp_timer;
++	/** This arrays used for debug purposes for DEV OUT NAK enhancement */
++	uint32_t start_doeptsiz_val[MAX_EPS_CHANNELS];
++	ep_xfer_info_t ep_xfer_info[MAX_EPS_CHANNELS];
++	dwc_timer_t *ep_xfer_timer[MAX_EPS_CHANNELS];
++#ifdef DEBUG
++	uint32_t start_hcchar_val[MAX_EPS_CHANNELS];
++
++	hc_xfer_info_t hc_xfer_info[MAX_EPS_CHANNELS];
++	dwc_timer_t *hc_xfer_timer[MAX_EPS_CHANNELS];
++
++	uint32_t hfnum_7_samples;
++	uint64_t hfnum_7_frrem_accum;
++	uint32_t hfnum_0_samples;
++	uint64_t hfnum_0_frrem_accum;
++	uint32_t hfnum_other_samples;
++	uint64_t hfnum_other_frrem_accum;
++#endif
++
++#ifdef DWC_UTE_CFI
++	uint16_t pwron_rxfsiz;
++	uint16_t pwron_gnptxfsiz;
++	uint16_t pwron_txfsiz[15];
++
++	uint16_t init_rxfsiz;
++	uint16_t init_gnptxfsiz;
++	uint16_t init_txfsiz[15];
++#endif
++
++	/** Lx state of device */
++	dwc_otg_lx_state_e lx_state;
++
++	/** Saved Core Global registers */
++	struct dwc_otg_global_regs_backup *gr_backup;
++	/** Saved Host registers */
++	struct dwc_otg_host_regs_backup *hr_backup;
++	/** Saved Device registers */
++	struct dwc_otg_dev_regs_backup *dr_backup;
++
++	/** Power Down Enable */
++	uint32_t power_down;
++
++	/** ADP support Enable */
++	uint32_t adp_enable;
++
++	/** ADP structure object */
++	dwc_otg_adp_t adp;
++
++	/** hibernation/suspend flag */
++	int hibernation_suspend;
++
++	/** Device mode extended hibernation flag */
++	int xhib;
++
++	/** OTG revision supported */
++	uint32_t otg_ver;
++
++	/** OTG status flag used for HNP polling */
++	uint8_t otg_sts;
++
++	/** Pointer to either hcd->lock or pcd->lock */
++	dwc_spinlock_t *lock;
++
++	/** Start predict NextEP based on Learning Queue if equal 1,
++	 * also used as counter of disabled NP IN EP's */
++	uint8_t start_predict;
++
++	/** NextEp sequence, including EP0: nextep_seq[] = EP if non-periodic and
++	 * active, 0xff otherwise */
++	uint8_t nextep_seq[MAX_EPS_CHANNELS];
++
++	/** Index of fisrt EP in nextep_seq array which should be re-enabled **/
++	uint8_t first_in_nextep_seq;
++
++	/** Frame number while entering to ISR - needed for ISOCs **/
++	uint32_t frame_num;
++
++};
++
++#ifdef DEBUG
++/*
++ * This function is called when transfer is timed out.
++ */
++extern void hc_xfer_timeout(void *ptr);
++#endif
++
++/*
++ * This function is called when transfer is timed out on endpoint.
++ */
++extern void ep_xfer_timeout(void *ptr);
++
++/*
++ * The following functions are functions for works
++ * using during handling some interrupts
++ */
++extern void w_conn_id_status_change(void *p);
++
++extern void w_wakeup_detected(void *p);
++
++/** Saves global register values into system memory. */
++extern int dwc_otg_save_global_regs(dwc_otg_core_if_t * core_if);
++/** Saves device register values into system memory. */
++extern int dwc_otg_save_dev_regs(dwc_otg_core_if_t * core_if);
++/** Saves host register values into system memory. */
++extern int dwc_otg_save_host_regs(dwc_otg_core_if_t * core_if);
++/** Restore global register values. */
++extern int dwc_otg_restore_global_regs(dwc_otg_core_if_t * core_if);
++/** Restore host register values. */
++extern int dwc_otg_restore_host_regs(dwc_otg_core_if_t * core_if, int reset);
++/** Restore device register values. */
++extern int dwc_otg_restore_dev_regs(dwc_otg_core_if_t * core_if,
++				    int rem_wakeup);
++extern int restore_lpm_i2c_regs(dwc_otg_core_if_t * core_if);
++extern int restore_essential_regs(dwc_otg_core_if_t * core_if, int rmode,
++				  int is_host);
++
++extern int dwc_otg_host_hibernation_restore(dwc_otg_core_if_t * core_if,
++					    int restore_mode, int reset);
++extern int dwc_otg_device_hibernation_restore(dwc_otg_core_if_t * core_if,
++					      int rem_wakeup, int reset);
++
++/*
++ * The following functions support initialization of the CIL driver component
++ * and the DWC_otg controller.
++ */
++extern void dwc_otg_core_host_init(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_core_dev_init(dwc_otg_core_if_t * _core_if);
++
++/** @name Device CIL Functions
++ * The following functions support managing the DWC_otg controller in device
++ * mode.
++ */
++/**@{*/
++extern void dwc_otg_wakeup(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_read_setup_packet(dwc_otg_core_if_t * _core_if,
++				      uint32_t * _dest);
++extern uint32_t dwc_otg_get_frame_number(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_ep0_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
++extern void dwc_otg_ep_activate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
++extern void dwc_otg_ep_deactivate(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
++extern void dwc_otg_ep_start_transfer(dwc_otg_core_if_t * _core_if,
++				      dwc_ep_t * _ep);
++extern void dwc_otg_ep_start_zl_transfer(dwc_otg_core_if_t * _core_if,
++					 dwc_ep_t * _ep);
++extern void dwc_otg_ep0_start_transfer(dwc_otg_core_if_t * _core_if,
++				       dwc_ep_t * _ep);
++extern void dwc_otg_ep0_continue_transfer(dwc_otg_core_if_t * _core_if,
++					  dwc_ep_t * _ep);
++extern void dwc_otg_ep_write_packet(dwc_otg_core_if_t * _core_if,
++				    dwc_ep_t * _ep, int _dma);
++extern void dwc_otg_ep_set_stall(dwc_otg_core_if_t * _core_if, dwc_ep_t * _ep);
++extern void dwc_otg_ep_clear_stall(dwc_otg_core_if_t * _core_if,
++				   dwc_ep_t * _ep);
++extern void dwc_otg_enable_device_interrupts(dwc_otg_core_if_t * _core_if);
++
++#ifdef DWC_EN_ISOC
++extern void dwc_otg_iso_ep_start_frm_transfer(dwc_otg_core_if_t * core_if,
++					      dwc_ep_t * ep);
++extern void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t * core_if,
++					      dwc_ep_t * ep);
++#endif /* DWC_EN_ISOC */
++/**@}*/
++
++/** @name Host CIL Functions
++ * The following functions support managing the DWC_otg controller in host
++ * mode.
++ */
++/**@{*/
++extern void dwc_otg_hc_init(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
++extern void dwc_otg_hc_halt(dwc_otg_core_if_t * _core_if,
++			    dwc_hc_t * _hc, dwc_otg_halt_status_e _halt_status);
++extern void dwc_otg_hc_cleanup(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
++extern void dwc_otg_hc_start_transfer(dwc_otg_core_if_t * _core_if,
++				      dwc_hc_t * _hc);
++extern int dwc_otg_hc_continue_transfer(dwc_otg_core_if_t * _core_if,
++					dwc_hc_t * _hc);
++extern void dwc_otg_hc_do_ping(dwc_otg_core_if_t * _core_if, dwc_hc_t * _hc);
++extern void dwc_otg_hc_write_packet(dwc_otg_core_if_t * _core_if,
++				    dwc_hc_t * _hc);
++extern void dwc_otg_enable_host_interrupts(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_disable_host_interrupts(dwc_otg_core_if_t * _core_if);
++
++extern void dwc_otg_hc_start_transfer_ddma(dwc_otg_core_if_t * core_if,
++					   dwc_hc_t * hc);
++
++extern uint32_t calc_frame_interval(dwc_otg_core_if_t * core_if);
++
++/* Macro used to clear one channel interrupt */
++#define clear_hc_int(_hc_regs_, _intr_) \
++do { \
++	hcint_data_t hcint_clear = {.d32 = 0}; \
++	hcint_clear.b._intr_ = 1; \
++	DWC_WRITE_REG32(&(_hc_regs_)->hcint, hcint_clear.d32); \
++} while (0)
++
++/*
++ * Macro used to disable one channel interrupt. Channel interrupts are
++ * disabled when the channel is halted or released by the interrupt handler.
++ * There is no need to handle further interrupts of that type until the
++ * channel is re-assigned. In fact, subsequent handling may cause crashes
++ * because the channel structures are cleaned up when the channel is released.
++ */
++#define disable_hc_int(_hc_regs_, _intr_) \
++do { \
++	hcintmsk_data_t hcintmsk = {.d32 = 0}; \
++	hcintmsk.b._intr_ = 1; \
++	DWC_MODIFY_REG32(&(_hc_regs_)->hcintmsk, hcintmsk.d32, 0); \
++} while (0)
++
++/**
++ * This function Reads HPRT0 in preparation to modify. It keeps the
++ * WC bits 0 so that if they are read as 1, they won't clear when you
++ * write it back
++ */
++static inline uint32_t dwc_otg_read_hprt0(dwc_otg_core_if_t * _core_if)
++{
++	hprt0_data_t hprt0;
++	hprt0.d32 = DWC_READ_REG32(_core_if->host_if->hprt0);
++	hprt0.b.prtena = 0;
++	hprt0.b.prtconndet = 0;
++	hprt0.b.prtenchng = 0;
++	hprt0.b.prtovrcurrchng = 0;
++	return hprt0.d32;
++}
++
++/**@}*/
++
++/** @name Common CIL Functions
++ * The following functions support managing the DWC_otg controller in either
++ * device or host mode.
++ */
++/**@{*/
++
++extern void dwc_otg_read_packet(dwc_otg_core_if_t * core_if,
++				uint8_t * dest, uint16_t bytes);
++
++extern void dwc_otg_flush_tx_fifo(dwc_otg_core_if_t * _core_if, const int _num);
++extern void dwc_otg_flush_rx_fifo(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_core_reset(dwc_otg_core_if_t * _core_if);
++
++/**
++ * This function returns the Core Interrupt register.
++ */
++static inline uint32_t dwc_otg_read_core_intr(dwc_otg_core_if_t * core_if)
++{
++	return (DWC_READ_REG32(&core_if->core_global_regs->gintsts) &
++		DWC_READ_REG32(&core_if->core_global_regs->gintmsk));
++}
++
++/**
++ * This function returns the OTG Interrupt register.
++ */
++static inline uint32_t dwc_otg_read_otg_intr(dwc_otg_core_if_t * core_if)
++{
++	return (DWC_READ_REG32(&core_if->core_global_regs->gotgint));
++}
++
++/**
++ * This function reads the Device All Endpoints Interrupt register and
++ * returns the IN endpoint interrupt bits.
++ */
++static inline uint32_t dwc_otg_read_dev_all_in_ep_intr(dwc_otg_core_if_t *
++						       core_if)
++{
++
++	uint32_t v;
++
++	if (core_if->multiproc_int_enable) {
++		v = DWC_READ_REG32(&core_if->dev_if->
++				   dev_global_regs->deachint) &
++		    DWC_READ_REG32(&core_if->
++				   dev_if->dev_global_regs->deachintmsk);
++	} else {
++		v = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daint) &
++		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
++	}
++	return (v & 0xffff);
++}
++
++/**
++ * This function reads the Device All Endpoints Interrupt register and
++ * returns the OUT endpoint interrupt bits.
++ */
++static inline uint32_t dwc_otg_read_dev_all_out_ep_intr(dwc_otg_core_if_t *
++							core_if)
++{
++	uint32_t v;
++
++	if (core_if->multiproc_int_enable) {
++		v = DWC_READ_REG32(&core_if->dev_if->
++				   dev_global_regs->deachint) &
++		    DWC_READ_REG32(&core_if->
++				   dev_if->dev_global_regs->deachintmsk);
++	} else {
++		v = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daint) &
++		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->daintmsk);
++	}
++
++	return ((v & 0xffff0000) >> 16);
++}
++
++/**
++ * This function returns the Device IN EP Interrupt register
++ */
++static inline uint32_t dwc_otg_read_dev_in_ep_intr(dwc_otg_core_if_t * core_if,
++						   dwc_ep_t * ep)
++{
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	uint32_t v, msk, emp;
++
++	if (core_if->multiproc_int_enable) {
++		msk =
++		    DWC_READ_REG32(&dev_if->
++				   dev_global_regs->diepeachintmsk[ep->num]);
++		emp =
++		    DWC_READ_REG32(&dev_if->
++				   dev_global_regs->dtknqr4_fifoemptymsk);
++		msk |= ((emp >> ep->num) & 0x1) << 7;
++		v = DWC_READ_REG32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
++	} else {
++		msk = DWC_READ_REG32(&dev_if->dev_global_regs->diepmsk);
++		emp =
++		    DWC_READ_REG32(&dev_if->
++				   dev_global_regs->dtknqr4_fifoemptymsk);
++		msk |= ((emp >> ep->num) & 0x1) << 7;
++		v = DWC_READ_REG32(&dev_if->in_ep_regs[ep->num]->diepint) & msk;
++	}
++
++	return v;
++}
++
++/**
++ * This function returns the Device OUT EP Interrupt register
++ */
++static inline uint32_t dwc_otg_read_dev_out_ep_intr(dwc_otg_core_if_t *
++						    _core_if, dwc_ep_t * _ep)
++{
++	dwc_otg_dev_if_t *dev_if = _core_if->dev_if;
++	uint32_t v;
++	doepmsk_data_t msk = {.d32 = 0 };
++
++	if (_core_if->multiproc_int_enable) {
++		msk.d32 =
++		    DWC_READ_REG32(&dev_if->
++				   dev_global_regs->doepeachintmsk[_ep->num]);
++		if (_core_if->pti_enh_enable) {
++			msk.b.pktdrpsts = 1;
++		}
++		v = DWC_READ_REG32(&dev_if->
++				   out_ep_regs[_ep->num]->doepint) & msk.d32;
++	} else {
++		msk.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->doepmsk);
++		if (_core_if->pti_enh_enable) {
++			msk.b.pktdrpsts = 1;
++		}
++		v = DWC_READ_REG32(&dev_if->
++				   out_ep_regs[_ep->num]->doepint) & msk.d32;
++	}
++	return v;
++}
++
++/**
++ * This function returns the Host All Channel Interrupt register
++ */
++static inline uint32_t dwc_otg_read_host_all_channels_intr(dwc_otg_core_if_t *
++							   _core_if)
++{
++	return (DWC_READ_REG32(&_core_if->host_if->host_global_regs->haint));
++}
++
++static inline uint32_t dwc_otg_read_host_channel_intr(dwc_otg_core_if_t *
++						      _core_if, dwc_hc_t * _hc)
++{
++	return (DWC_READ_REG32
++		(&_core_if->host_if->hc_regs[_hc->hc_num]->hcint));
++}
++
++/**
++ * This function returns the mode of the operation, host or device.
++ *
++ * @return 0 - Device Mode, 1 - Host Mode
++ */
++static inline uint32_t dwc_otg_mode(dwc_otg_core_if_t * _core_if)
++{
++	return (DWC_READ_REG32(&_core_if->core_global_regs->gintsts) & 0x1);
++}
++
++/**@}*/
++
++/**
++ * DWC_otg CIL callback structure. This structure allows the HCD and
++ * PCD to register functions used for starting and stopping the PCD
++ * and HCD for role change on for a DRD.
++ */
++typedef struct dwc_otg_cil_callbacks {
++	/** Start function for role change */
++	int (*start) (void *_p);
++	/** Stop Function for role change */
++	int (*stop) (void *_p);
++	/** Disconnect Function for role change */
++	int (*disconnect) (void *_p);
++	/** Resume/Remote wakeup Function */
++	int (*resume_wakeup) (void *_p);
++	/** Suspend function */
++	int (*suspend) (void *_p);
++	/** Session Start (SRP) */
++	int (*session_start) (void *_p);
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	/** Sleep (switch to L0 state) */
++	int (*sleep) (void *_p);
++#endif
++	/** Pointer passed to start() and stop() */
++	void *p;
++} dwc_otg_cil_callbacks_t;
++
++extern void dwc_otg_cil_register_pcd_callbacks(dwc_otg_core_if_t * _core_if,
++					       dwc_otg_cil_callbacks_t * _cb,
++					       void *_p);
++extern void dwc_otg_cil_register_hcd_callbacks(dwc_otg_core_if_t * _core_if,
++					       dwc_otg_cil_callbacks_t * _cb,
++					       void *_p);
++
++void dwc_otg_initiate_srp(dwc_otg_core_if_t * core_if);
++
++//////////////////////////////////////////////////////////////////////
++/** Start the HCD.  Helper function for using the HCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_hcd_start(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->hcd_cb && core_if->hcd_cb->start) {
++		core_if->hcd_cb->start(core_if->hcd_cb->p);
++	}
++}
++
++/** Stop the HCD.  Helper function for using the HCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_hcd_stop(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->hcd_cb && core_if->hcd_cb->stop) {
++		core_if->hcd_cb->stop(core_if->hcd_cb->p);
++	}
++}
++
++/** Disconnect the HCD.  Helper function for using the HCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_hcd_disconnect(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->hcd_cb && core_if->hcd_cb->disconnect) {
++		core_if->hcd_cb->disconnect(core_if->hcd_cb->p);
++	}
++}
++
++/** Inform the HCD the a New Session has begun.  Helper function for
++ * using the HCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_hcd_session_start(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->hcd_cb && core_if->hcd_cb->session_start) {
++		core_if->hcd_cb->session_start(core_if->hcd_cb->p);
++	}
++}
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++/**
++ * Inform the HCD about LPM sleep.
++ * Helper function for using the HCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_hcd_sleep(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->hcd_cb && core_if->hcd_cb->sleep) {
++		core_if->hcd_cb->sleep(core_if->hcd_cb->p);
++	}
++}
++#endif
++
++/** Resume the HCD.  Helper function for using the HCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_hcd_resume(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->hcd_cb && core_if->hcd_cb->resume_wakeup) {
++		core_if->hcd_cb->resume_wakeup(core_if->hcd_cb->p);
++	}
++}
++
++/** Start the PCD.  Helper function for using the PCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_pcd_start(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->pcd_cb && core_if->pcd_cb->start) {
++		core_if->pcd_cb->start(core_if->pcd_cb->p);
++	}
++}
++
++/** Stop the PCD.  Helper function for using the PCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_pcd_stop(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->pcd_cb && core_if->pcd_cb->stop) {
++		core_if->pcd_cb->stop(core_if->pcd_cb->p);
++	}
++}
++
++/** Suspend the PCD.  Helper function for using the PCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_pcd_suspend(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->pcd_cb && core_if->pcd_cb->suspend) {
++		core_if->pcd_cb->suspend(core_if->pcd_cb->p);
++	}
++}
++
++/** Resume the PCD.  Helper function for using the PCD callbacks.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static inline void cil_pcd_resume(dwc_otg_core_if_t * core_if)
++{
++	if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
++		core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
++	}
++}
++
++//////////////////////////////////////////////////////////////////////
++
++#endif
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
+@@ -0,0 +1,1601 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_cil_intr.c $
++ * $Revision: #32 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++/** @file
++ *
++ * The Core Interface Layer provides basic services for accessing and
++ * managing the DWC_otg hardware. These services are used by both the
++ * Host Controller Driver and the Peripheral Controller Driver.
++ *
++ * This file contains the Common Interrupt handlers.
++ */
++#include "dwc_os.h"
++#include "dwc_otg_regs.h"
++#include "dwc_otg_cil.h"
++#include "dwc_otg_driver.h"
++#include "dwc_otg_pcd.h"
++#include "dwc_otg_hcd.h"
++
++#ifdef DEBUG
++inline const char *op_state_str(dwc_otg_core_if_t * core_if)
++{
++	return (core_if->op_state == A_HOST ? "a_host" :
++		(core_if->op_state == A_SUSPEND ? "a_suspend" :
++		 (core_if->op_state == A_PERIPHERAL ? "a_peripheral" :
++		  (core_if->op_state == B_PERIPHERAL ? "b_peripheral" :
++		   (core_if->op_state == B_HOST ? "b_host" : "unknown")))));
++}
++#endif
++
++/** This function will log a debug message
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++int32_t dwc_otg_handle_mode_mismatch_intr(dwc_otg_core_if_t * core_if)
++{
++	gintsts_data_t gintsts;
++	DWC_WARN("Mode Mismatch Interrupt: currently in %s mode\n",
++		 dwc_otg_mode(core_if) ? "Host" : "Device");
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.modemismatch = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++	return 1;
++}
++
++/**
++ * This function handles the OTG Interrupts. It reads the OTG
++ * Interrupt Register (GOTGINT) to determine what interrupt has
++ * occurred.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++int32_t dwc_otg_handle_otg_intr(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	gotgint_data_t gotgint;
++	gotgctl_data_t gotgctl;
++	gintmsk_data_t gintmsk;
++	gpwrdn_data_t gpwrdn;
++
++	gotgint.d32 = DWC_READ_REG32(&global_regs->gotgint);
++	gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
++	DWC_DEBUGPL(DBG_CIL, "++OTG Interrupt gotgint=%0x [%s]\n", gotgint.d32,
++		    op_state_str(core_if));
++
++	if (gotgint.b.sesenddet) {
++		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
++			    "Session End Detected++ (%s)\n",
++			    op_state_str(core_if));
++		gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
++
++		if (core_if->op_state == B_HOST) {
++			cil_pcd_start(core_if);
++			core_if->op_state = B_PERIPHERAL;
++		} else {
++			/* If not B_HOST and Device HNP still set. HNP
++			 * Did not succeed!*/
++			if (gotgctl.b.devhnpen) {
++				DWC_DEBUGPL(DBG_ANY, "Session End Detected\n");
++				__DWC_ERROR("Device Not Connected/Responding!\n");
++			}
++
++			/* If Session End Detected the B-Cable has
++			 * been disconnected. */
++			/* Reset PCD and Gadget driver to a
++			 * clean state. */
++			core_if->lx_state = DWC_OTG_L0;
++			DWC_SPINUNLOCK(core_if->lock);
++			cil_pcd_stop(core_if);
++			DWC_SPINLOCK(core_if->lock);
++
++			if (core_if->adp_enable) {
++				if (core_if->power_down == 2) {
++					gpwrdn.d32 = 0;
++					gpwrdn.b.pwrdnswtch = 1;
++					DWC_MODIFY_REG32(&core_if->
++							 core_global_regs->
++							 gpwrdn, gpwrdn.d32, 0);
++				}
++
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuintsel = 1;
++				gpwrdn.b.pmuactv = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++
++				dwc_otg_adp_sense_start(core_if);
++			}
++		}
++
++		gotgctl.d32 = 0;
++		gotgctl.b.devhnpen = 1;
++		DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
++	}
++	if (gotgint.b.sesreqsucstschng) {
++		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
++			    "Session Reqeust Success Status Change++\n");
++		gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
++		if (gotgctl.b.sesreqscs) {
++
++			if ((core_if->core_params->phy_type ==
++			     DWC_PHY_TYPE_PARAM_FS) && (core_if->core_params->i2c_enable)) {
++				core_if->srp_success = 1;
++			} else {
++				DWC_SPINUNLOCK(core_if->lock);
++				cil_pcd_resume(core_if);
++				DWC_SPINLOCK(core_if->lock);
++				/* Clear Session Request */
++				gotgctl.d32 = 0;
++				gotgctl.b.sesreq = 1;
++				DWC_MODIFY_REG32(&global_regs->gotgctl,
++						 gotgctl.d32, 0);
++			}
++		}
++	}
++	if (gotgint.b.hstnegsucstschng) {
++		/* Print statements during the HNP interrupt handling
++		 * can cause it to fail.*/
++		gotgctl.d32 = DWC_READ_REG32(&global_regs->gotgctl);
++		/* WA for 3.00a- HW is not setting cur_mode, even sometimes
++		 * this does not help*/
++		if (core_if->snpsid >= OTG_CORE_REV_3_00a)
++			dwc_udelay(100);
++		if (gotgctl.b.hstnegscs) {
++			if (dwc_otg_is_host_mode(core_if)) {
++				core_if->op_state = B_HOST;
++				/*
++				 * Need to disable SOF interrupt immediately.
++				 * When switching from device to host, the PCD
++				 * interrupt handler won't handle the
++				 * interrupt if host mode is already set. The
++				 * HCD interrupt handler won't get called if
++				 * the HCD state is HALT. This means that the
++				 * interrupt does not get handled and Linux
++				 * complains loudly.
++				 */
++				gintmsk.d32 = 0;
++				gintmsk.b.sofintr = 1;
++				DWC_MODIFY_REG32(&global_regs->gintmsk,
++						 gintmsk.d32, 0);
++				/* Call callback function with spin lock released */
++				DWC_SPINUNLOCK(core_if->lock);
++				cil_pcd_stop(core_if);
++				/*
++				 * Initialize the Core for Host mode.
++				 */
++				cil_hcd_start(core_if);
++				DWC_SPINLOCK(core_if->lock);
++				core_if->op_state = B_HOST;
++			}
++		} else {
++			gotgctl.d32 = 0;
++			gotgctl.b.hnpreq = 1;
++			gotgctl.b.devhnpen = 1;
++			DWC_MODIFY_REG32(&global_regs->gotgctl, gotgctl.d32, 0);
++			DWC_DEBUGPL(DBG_ANY, "HNP Failed\n");
++			__DWC_ERROR("Device Not Connected/Responding\n");
++		}
++	}
++	if (gotgint.b.hstnegdet) {
++		/* The disconnect interrupt is set at the same time as
++		 * Host Negotiation Detected.  During the mode
++		 * switch all interrupts are cleared so the disconnect
++		 * interrupt handler will not get executed.
++		 */
++		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
++			    "Host Negotiation Detected++ (%s)\n",
++			    (dwc_otg_is_host_mode(core_if) ? "Host" :
++			     "Device"));
++		if (dwc_otg_is_device_mode(core_if)) {
++			DWC_DEBUGPL(DBG_ANY, "a_suspend->a_peripheral (%d)\n",
++				    core_if->op_state);
++			DWC_SPINUNLOCK(core_if->lock);
++			cil_hcd_disconnect(core_if);
++			cil_pcd_start(core_if);
++			DWC_SPINLOCK(core_if->lock);
++			core_if->op_state = A_PERIPHERAL;
++		} else {
++			/*
++			 * Need to disable SOF interrupt immediately. When
++			 * switching from device to host, the PCD interrupt
++			 * handler won't handle the interrupt if host mode is
++			 * already set. The HCD interrupt handler won't get
++			 * called if the HCD state is HALT. This means that
++			 * the interrupt does not get handled and Linux
++			 * complains loudly.
++			 */
++			gintmsk.d32 = 0;
++			gintmsk.b.sofintr = 1;
++			DWC_MODIFY_REG32(&global_regs->gintmsk, gintmsk.d32, 0);
++			DWC_SPINUNLOCK(core_if->lock);
++			cil_pcd_stop(core_if);
++			cil_hcd_start(core_if);
++			DWC_SPINLOCK(core_if->lock);
++			core_if->op_state = A_HOST;
++		}
++	}
++	if (gotgint.b.adevtoutchng) {
++		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: "
++			    "A-Device Timeout Change++\n");
++	}
++	if (gotgint.b.debdone) {
++		DWC_DEBUGPL(DBG_ANY, " ++OTG Interrupt: " "Debounce Done++\n");
++	}
++
++	/* Clear GOTGINT */
++	DWC_WRITE_REG32(&core_if->core_global_regs->gotgint, gotgint.d32);
++
++	return 1;
++}
++
++void w_conn_id_status_change(void *p)
++{
++	dwc_otg_core_if_t *core_if = p;
++	uint32_t count = 0;
++	gotgctl_data_t gotgctl = {.d32 = 0 };
++
++	gotgctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++	DWC_DEBUGPL(DBG_CIL, "gotgctl=%0x\n", gotgctl.d32);
++	DWC_DEBUGPL(DBG_CIL, "gotgctl.b.conidsts=%d\n", gotgctl.b.conidsts);
++
++	/* B-Device connector (Device Mode) */
++	if (gotgctl.b.conidsts) {
++		/* Wait for switch to device mode. */
++		while (!dwc_otg_is_device_mode(core_if)) {
++			DWC_PRINTF("Waiting for Peripheral Mode, Mode=%s\n",
++				   (dwc_otg_is_host_mode(core_if) ? "Host" :
++				    "Peripheral"));
++			dwc_mdelay(100);
++			if (++count > 10000)
++				break;
++		}
++		DWC_ASSERT(++count < 10000,
++			   "Connection id status change timed out");
++		core_if->op_state = B_PERIPHERAL;
++		dwc_otg_core_init(core_if);
++		dwc_otg_enable_global_interrupts(core_if);
++		cil_pcd_start(core_if);
++	} else {
++		/* A-Device connector (Host Mode) */
++		while (!dwc_otg_is_host_mode(core_if)) {
++			DWC_PRINTF("Waiting for Host Mode, Mode=%s\n",
++				   (dwc_otg_is_host_mode(core_if) ? "Host" :
++				    "Peripheral"));
++			dwc_mdelay(100);
++			if (++count > 10000)
++				break;
++		}
++		DWC_ASSERT(++count < 10000,
++			   "Connection id status change timed out");
++		core_if->op_state = A_HOST;
++		/*
++		 * Initialize the Core for Host mode.
++		 */
++		dwc_otg_core_init(core_if);
++		dwc_otg_enable_global_interrupts(core_if);
++		cil_hcd_start(core_if);
++	}
++}
++
++/**
++ * This function handles the Connector ID Status Change Interrupt.  It
++ * reads the OTG Interrupt Register (GOTCTL) to determine whether this
++ * is a Device to Host Mode transition or a Host Mode to Device
++ * Transition.
++ *
++ * This only occurs when the cable is connected/removed from the PHY
++ * connector.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++int32_t dwc_otg_handle_conn_id_status_change_intr(dwc_otg_core_if_t * core_if)
++{
++
++	/*
++	 * Need to disable SOF interrupt immediately. If switching from device
++	 * to host, the PCD interrupt handler won't handle the interrupt if
++	 * host mode is already set. The HCD interrupt handler won't get
++	 * called if the HCD state is HALT. This means that the interrupt does
++	 * not get handled and Linux complains loudly.
++	 */
++	gintmsk_data_t gintmsk = {.d32 = 0 };
++	gintsts_data_t gintsts = {.d32 = 0 };
++
++	gintmsk.b.sofintr = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
++
++	DWC_DEBUGPL(DBG_CIL,
++		    " ++Connector ID Status Change Interrupt++  (%s)\n",
++		    (dwc_otg_is_host_mode(core_if) ? "Host" : "Device"));
++
++	DWC_SPINUNLOCK(core_if->lock);
++
++	/*
++	 * Need to schedule a work, as there are possible DELAY function calls
++	 * Release lock before scheduling workq as it holds spinlock during scheduling
++	 */
++
++	DWC_WORKQ_SCHEDULE(core_if->wq_otg, w_conn_id_status_change,
++			   core_if, "connection id status change");
++	DWC_SPINLOCK(core_if->lock);
++
++	/* Set flag and clear interrupt */
++	gintsts.b.conidstschng = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This interrupt indicates that a device is initiating the Session
++ * Request Protocol to request the host to turn on bus power so a new
++ * session can begin. The handler responds by turning on bus power. If
++ * the DWC_otg controller is in low power mode, the handler brings the
++ * controller out of low power mode before turning on bus power.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++int32_t dwc_otg_handle_session_req_intr(dwc_otg_core_if_t * core_if)
++{
++	gintsts_data_t gintsts;
++
++#ifndef DWC_HOST_ONLY
++	DWC_DEBUGPL(DBG_ANY, "++Session Request Interrupt++\n");
++
++	if (dwc_otg_is_device_mode(core_if)) {
++		DWC_PRINTF("SRP: Device mode\n");
++	} else {
++		hprt0_data_t hprt0;
++		DWC_PRINTF("SRP: Host mode\n");
++
++		/* Turn on the port power bit. */
++		hprt0.d32 = dwc_otg_read_hprt0(core_if);
++		hprt0.b.prtpwr = 1;
++		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++		/* Start the Connection timer. So a message can be displayed
++		 * if connect does not occur within 10 seconds. */
++		cil_hcd_session_start(core_if);
++	}
++#endif
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.sessreqintr = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++void w_wakeup_detected(void *p)
++{
++	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) p;
++	/*
++	 * Clear the Resume after 70ms. (Need 20 ms minimum. Use 70 ms
++	 * so that OPT tests pass with all PHYs).
++	 */
++	hprt0_data_t hprt0 = {.d32 = 0 };
++#if 0
++	pcgcctl_data_t pcgcctl = {.d32 = 0 };
++	/* Restart the Phy Clock */
++	pcgcctl.b.stoppclk = 1;
++	DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
++	dwc_udelay(10);
++#endif //0
++	hprt0.d32 = dwc_otg_read_hprt0(core_if);
++	DWC_DEBUGPL(DBG_ANY, "Resume: HPRT0=%0x\n", hprt0.d32);
++//      dwc_mdelay(70);
++	hprt0.b.prtres = 0;	/* Resume */
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++	DWC_DEBUGPL(DBG_ANY, "Clear Resume: HPRT0=%0x\n",
++		    DWC_READ_REG32(core_if->host_if->hprt0));
++
++	cil_hcd_resume(core_if);
++
++	/** Change to L0 state*/
++	core_if->lx_state = DWC_OTG_L0;
++}
++
++/**
++ * This interrupt indicates that the DWC_otg controller has detected a
++ * resume or remote wakeup sequence. If the DWC_otg controller is in
++ * low power mode, the handler must brings the controller out of low
++ * power mode. The controller automatically begins resume
++ * signaling. The handler schedules a time to stop resume signaling.
++ */
++int32_t dwc_otg_handle_wakeup_detected_intr(dwc_otg_core_if_t * core_if)
++{
++	gintsts_data_t gintsts;
++
++	DWC_DEBUGPL(DBG_ANY,
++		    "++Resume and Remote Wakeup Detected Interrupt++\n");
++
++	DWC_PRINTF("%s lxstate = %d\n", __func__, core_if->lx_state);
++
++	if (dwc_otg_is_device_mode(core_if)) {
++		dctl_data_t dctl = {.d32 = 0 };
++		DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n",
++			    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->
++					   dsts));
++		if (core_if->lx_state == DWC_OTG_L2) {
++#ifdef PARTIAL_POWER_DOWN
++			if (core_if->hwcfg4.b.power_optimiz) {
++				pcgcctl_data_t power = {.d32 = 0 };
++
++				power.d32 = DWC_READ_REG32(core_if->pcgcctl);
++				DWC_DEBUGPL(DBG_CIL, "PCGCCTL=%0x\n",
++					    power.d32);
++
++				power.b.stoppclk = 0;
++				DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
++
++				power.b.pwrclmp = 0;
++				DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
++
++				power.b.rstpdwnmodule = 0;
++				DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
++			}
++#endif
++			/* Clear the Remote Wakeup Signaling */
++			dctl.b.rmtwkupsig = 1;
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++					 dctl, dctl.d32, 0);
++
++			DWC_SPINUNLOCK(core_if->lock);
++			if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
++				core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
++			}
++			DWC_SPINLOCK(core_if->lock);
++		} else {
++			glpmcfg_data_t lpmcfg;
++			lpmcfg.d32 =
++			    DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++			lpmcfg.b.hird_thres &= (~(1 << 4));
++			DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg,
++					lpmcfg.d32);
++		}
++		/** Change to L0 state*/
++		core_if->lx_state = DWC_OTG_L0;
++	} else {
++		if (core_if->lx_state != DWC_OTG_L1) {
++			pcgcctl_data_t pcgcctl = {.d32 = 0 };
++
++			/* Restart the Phy Clock */
++			pcgcctl.b.stoppclk = 1;
++			DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
++			DWC_TIMER_SCHEDULE(core_if->wkp_timer, 71);
++		} else {
++			/** Change to L0 state*/
++			core_if->lx_state = DWC_OTG_L0;
++		}
++	}
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.wkupintr = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This interrupt indicates that the Wakeup Logic has detected a
++ * Device disconnect.
++ */
++static int32_t dwc_otg_handle_pwrdn_disconnect_intr(dwc_otg_core_if_t *core_if)
++{
++	gpwrdn_data_t gpwrdn = { .d32 = 0 };
++	gpwrdn_data_t gpwrdn_temp = { .d32 = 0 };
++	gpwrdn_temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++
++	DWC_PRINTF("%s called\n", __FUNCTION__);
++
++	if (!core_if->hibernation_suspend) {
++		DWC_PRINTF("Already exited from Hibernation\n");
++		return 1;
++	}
++
++	/* Switch on the voltage to the core */
++	gpwrdn.b.pwrdnswtch = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Reset the core */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Disable power clamps*/
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnclmp = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/* Remove reset the core signal */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++	dwc_udelay(10);
++
++	/* Disable PMU interrupt */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuintsel = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	core_if->hibernation_suspend = 0;
++
++	/* Disable PMU */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuactv = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	if (gpwrdn_temp.b.idsts) {
++		core_if->op_state = B_PERIPHERAL;
++		dwc_otg_core_init(core_if);
++		dwc_otg_enable_global_interrupts(core_if);
++		cil_pcd_start(core_if);
++	} else {
++		core_if->op_state = A_HOST;
++		dwc_otg_core_init(core_if);
++		dwc_otg_enable_global_interrupts(core_if);
++		cil_hcd_start(core_if);
++	}
++
++	return 1;
++}
++
++/**
++ * This interrupt indicates that the Wakeup Logic has detected a
++ * remote wakeup sequence.
++ */
++static int32_t dwc_otg_handle_pwrdn_wakeup_detected_intr(dwc_otg_core_if_t * core_if)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	DWC_DEBUGPL(DBG_ANY,
++		    "++Powerdown Remote Wakeup Detected Interrupt++\n");
++
++	if (!core_if->hibernation_suspend) {
++		DWC_PRINTF("Already exited from Hibernation\n");
++		return 1;
++	}
++
++	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++	if (gpwrdn.b.idsts) {	// Device Mode
++		if ((core_if->power_down == 2)
++		    && (core_if->hibernation_suspend == 1)) {
++			dwc_otg_device_hibernation_restore(core_if, 0, 0);
++		}
++	} else {
++		if ((core_if->power_down == 2)
++		    && (core_if->hibernation_suspend == 1)) {
++			dwc_otg_host_hibernation_restore(core_if, 1, 0);
++		}
++	}
++	return 1;
++}
++
++static int32_t dwc_otg_handle_pwrdn_idsts_change(dwc_otg_device_t *otg_dev)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	gpwrdn_data_t gpwrdn_temp = {.d32 = 0 };
++	dwc_otg_core_if_t *core_if = otg_dev->core_if;
++
++	DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
++	gpwrdn_temp.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++	if (core_if->power_down == 2) {
++		if (!core_if->hibernation_suspend) {
++			DWC_PRINTF("Already exited from Hibernation\n");
++			return 1;
++		}
++		DWC_DEBUGPL(DBG_ANY, "Exit from hibernation on ID sts change\n");
++		/* Switch on the voltage to the core */
++		gpwrdn.b.pwrdnswtch = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		dwc_udelay(10);
++
++		/* Reset the core */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pwrdnrstn = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		dwc_udelay(10);
++
++		/* Disable power clamps */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pwrdnclmp = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++		/* Remove reset the core signal */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pwrdnrstn = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++		dwc_udelay(10);
++
++		/* Disable PMU interrupt */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pmuintsel = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++		/*Indicates that we are exiting from hibernation */
++		core_if->hibernation_suspend = 0;
++
++		/* Disable PMU */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pmuactv = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		dwc_udelay(10);
++
++		gpwrdn.d32 = core_if->gr_backup->gpwrdn_local;
++		if (gpwrdn.b.dis_vbus == 1) {
++			gpwrdn.d32 = 0;
++			gpwrdn.b.dis_vbus = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		}
++
++		if (gpwrdn_temp.b.idsts) {
++			core_if->op_state = B_PERIPHERAL;
++			dwc_otg_core_init(core_if);
++			dwc_otg_enable_global_interrupts(core_if);
++			cil_pcd_start(core_if);
++		} else {
++			core_if->op_state = A_HOST;
++			dwc_otg_core_init(core_if);
++			dwc_otg_enable_global_interrupts(core_if);
++			cil_hcd_start(core_if);
++		}
++	}
++
++	if (core_if->adp_enable) {
++		uint8_t is_host = 0;
++		DWC_SPINUNLOCK(core_if->lock);
++		/* Change the core_if's lock to hcd/pcd lock depend on mode? */
++#ifndef DWC_HOST_ONLY
++		if (gpwrdn_temp.b.idsts)
++			core_if->lock = otg_dev->pcd->lock;
++#endif
++#ifndef DWC_DEVICE_ONLY
++		if (!gpwrdn_temp.b.idsts) {
++				core_if->lock = otg_dev->hcd->lock;
++				is_host = 1;
++		}
++#endif
++		DWC_PRINTF("RESTART ADP\n");
++		if (core_if->adp.probe_enabled)
++			dwc_otg_adp_probe_stop(core_if);
++		if (core_if->adp.sense_enabled)
++			dwc_otg_adp_sense_stop(core_if);
++		if (core_if->adp.sense_timer_started)
++			DWC_TIMER_CANCEL(core_if->adp.sense_timer);
++		if (core_if->adp.vbuson_timer_started)
++			DWC_TIMER_CANCEL(core_if->adp.vbuson_timer);
++		core_if->adp.probe_timer_values[0] = -1;
++		core_if->adp.probe_timer_values[1] = -1;
++		core_if->adp.sense_timer_started = 0;
++		core_if->adp.vbuson_timer_started = 0;
++		core_if->adp.probe_counter = 0;
++		core_if->adp.gpwrdn = 0;
++
++		/* Disable PMU and restart ADP */
++		gpwrdn_temp.d32 = 0;
++		gpwrdn_temp.b.pmuactv = 1;
++		gpwrdn_temp.b.pmuintsel = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		DWC_PRINTF("Check point 1\n");
++		dwc_mdelay(110);
++		dwc_otg_adp_start(core_if, is_host);
++		DWC_SPINLOCK(core_if->lock);
++	}
++
++
++	return 1;
++}
++
++static int32_t dwc_otg_handle_pwrdn_session_change(dwc_otg_core_if_t * core_if)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	int32_t otg_cap_param = core_if->core_params->otg_cap;
++	DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
++
++	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++	if (core_if->power_down == 2) {
++		if (!core_if->hibernation_suspend) {
++			DWC_PRINTF("Already exited from Hibernation\n");
++			return 1;
++		}
++
++		if ((otg_cap_param != DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE ||
++			 otg_cap_param != DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE) &&
++			gpwrdn.b.bsessvld == 0) {
++			/* Save gpwrdn register for further usage if stschng interrupt */
++			core_if->gr_backup->gpwrdn_local =
++				DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++			/*Exit from ISR and wait for stschng interrupt with bsessvld = 1 */
++			return 1;
++		}
++
++		/* Switch on the voltage to the core */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pwrdnswtch = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		dwc_udelay(10);
++
++		/* Reset the core */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pwrdnrstn = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		dwc_udelay(10);
++
++		/* Disable power clamps */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pwrdnclmp = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++		/* Remove reset the core signal */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pwrdnrstn = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++		dwc_udelay(10);
++
++		/* Disable PMU interrupt */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pmuintsel = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		dwc_udelay(10);
++
++		/*Indicates that we are exiting from hibernation */
++		core_if->hibernation_suspend = 0;
++
++		/* Disable PMU */
++		gpwrdn.d32 = 0;
++		gpwrdn.b.pmuactv = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++		dwc_udelay(10);
++
++		core_if->op_state = B_PERIPHERAL;
++		dwc_otg_core_init(core_if);
++		dwc_otg_enable_global_interrupts(core_if);
++		cil_pcd_start(core_if);
++
++		if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE ||
++			otg_cap_param == DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE) {
++			/*
++			 * Initiate SRP after initial ADP probe.
++			 */
++			dwc_otg_initiate_srp(core_if);
++		}
++	}
++
++	return 1;
++}
++/**
++ * This interrupt indicates that the Wakeup Logic has detected a
++ * status change either on IDDIG or BSessVld.
++ */
++static uint32_t dwc_otg_handle_pwrdn_stschng_intr(dwc_otg_device_t *otg_dev)
++{
++	int retval;
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	gpwrdn_data_t gpwrdn_temp = {.d32 = 0 };
++	dwc_otg_core_if_t *core_if = otg_dev->core_if;
++
++	DWC_PRINTF("%s called\n", __FUNCTION__);
++
++	if (core_if->power_down == 2) {
++		if (core_if->hibernation_suspend <= 0) {
++			DWC_PRINTF("Already exited from Hibernation\n");
++			return 1;
++		} else
++			gpwrdn_temp.d32 = core_if->gr_backup->gpwrdn_local;
++
++	} else {
++		gpwrdn_temp.d32 = core_if->adp.gpwrdn;
++	}
++
++	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++
++	if (gpwrdn.b.idsts ^ gpwrdn_temp.b.idsts) {
++		retval = dwc_otg_handle_pwrdn_idsts_change(otg_dev);
++	} else if (gpwrdn.b.bsessvld ^ gpwrdn_temp.b.bsessvld) {
++		retval = dwc_otg_handle_pwrdn_session_change(core_if);
++	}
++
++	return retval;
++}
++
++/**
++ * This interrupt indicates that the Wakeup Logic has detected a
++ * SRP.
++ */
++static int32_t dwc_otg_handle_pwrdn_srp_intr(dwc_otg_core_if_t * core_if)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++
++	DWC_PRINTF("%s called\n", __FUNCTION__);
++
++	if (!core_if->hibernation_suspend) {
++		DWC_PRINTF("Already exited from Hibernation\n");
++		return 1;
++	}
++#ifdef DWC_DEV_SRPCAP
++	if (core_if->pwron_timer_started) {
++		core_if->pwron_timer_started = 0;
++		DWC_TIMER_CANCEL(core_if->pwron_timer);
++	}
++#endif
++
++	/* Switch on the voltage to the core */
++	gpwrdn.b.pwrdnswtch = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Reset the core */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Disable power clamps */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnclmp = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/* Remove reset the core signal */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++	dwc_udelay(10);
++
++	/* Disable PMU interrupt */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuintsel = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/* Indicates that we are exiting from hibernation */
++	core_if->hibernation_suspend = 0;
++
++	/* Disable PMU */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuactv = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Programm Disable VBUS to 0 */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.dis_vbus = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/*Initialize the core as Host */
++	core_if->op_state = A_HOST;
++	dwc_otg_core_init(core_if);
++	dwc_otg_enable_global_interrupts(core_if);
++	cil_hcd_start(core_if);
++
++	return 1;
++}
++
++/** This interrupt indicates that restore command after Hibernation
++ * was completed by the core. */
++int32_t dwc_otg_handle_restore_done_intr(dwc_otg_core_if_t * core_if)
++{
++	pcgcctl_data_t pcgcctl;
++	DWC_DEBUGPL(DBG_ANY, "++Restore Done Interrupt++\n");
++
++	//TODO De-assert restore signal. 8.a
++	pcgcctl.d32 = DWC_READ_REG32(core_if->pcgcctl);
++	if (pcgcctl.b.restoremode == 1) {
++		gintmsk_data_t gintmsk = {.d32 = 0 };
++		/*
++		 * If restore mode is Remote Wakeup,
++		 * unmask Remote Wakeup interrupt.
++		 */
++		gintmsk.b.wkupintr = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
++				 0, gintmsk.d32);
++	}
++
++	return 1;
++}
++
++/**
++ * This interrupt indicates that a device has been disconnected from
++ * the root port.
++ */
++int32_t dwc_otg_handle_disconnect_intr(dwc_otg_core_if_t * core_if)
++{
++	gintsts_data_t gintsts;
++
++	DWC_DEBUGPL(DBG_ANY, "++Disconnect Detected Interrupt++ (%s) %s\n",
++		    (dwc_otg_is_host_mode(core_if) ? "Host" : "Device"),
++		    op_state_str(core_if));
++
++/** @todo Consolidate this if statement. */
++#ifndef DWC_HOST_ONLY
++	if (core_if->op_state == B_HOST) {
++		/* If in device mode Disconnect and stop the HCD, then
++		 * start the PCD. */
++		DWC_SPINUNLOCK(core_if->lock);
++		cil_hcd_disconnect(core_if);
++		cil_pcd_start(core_if);
++		DWC_SPINLOCK(core_if->lock);
++		core_if->op_state = B_PERIPHERAL;
++	} else if (dwc_otg_is_device_mode(core_if)) {
++		gotgctl_data_t gotgctl = {.d32 = 0 };
++		gotgctl.d32 =
++		    DWC_READ_REG32(&core_if->core_global_regs->gotgctl);
++		if (gotgctl.b.hstsethnpen == 1) {
++			/* Do nothing, if HNP in process the OTG
++			 * interrupt "Host Negotiation Detected"
++			 * interrupt will do the mode switch.
++			 */
++		} else if (gotgctl.b.devhnpen == 0) {
++			/* If in device mode Disconnect and stop the HCD, then
++			 * start the PCD. */
++			DWC_SPINUNLOCK(core_if->lock);
++			cil_hcd_disconnect(core_if);
++			cil_pcd_start(core_if);
++			DWC_SPINLOCK(core_if->lock);
++			core_if->op_state = B_PERIPHERAL;
++		} else {
++			DWC_DEBUGPL(DBG_ANY, "!a_peripheral && !devhnpen\n");
++		}
++	} else {
++		if (core_if->op_state == A_HOST) {
++			/* A-Cable still connected but device disconnected. */
++			DWC_SPINUNLOCK(core_if->lock);
++			cil_hcd_disconnect(core_if);
++			DWC_SPINLOCK(core_if->lock);
++			if (core_if->adp_enable) {
++				gpwrdn_data_t gpwrdn = { .d32 = 0 };
++				cil_hcd_stop(core_if);
++				/* Enable Power Down Logic */
++				gpwrdn.b.pmuintsel = 1;
++				gpwrdn.b.pmuactv = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++				dwc_otg_adp_probe_start(core_if);
++
++				/* Power off the core */
++				if (core_if->power_down == 2) {
++					gpwrdn.d32 = 0;
++					gpwrdn.b.pwrdnswtch = 1;
++					DWC_MODIFY_REG32
++					    (&core_if->core_global_regs->gpwrdn,
++					     gpwrdn.d32, 0);
++				}
++			}
++		}
++	}
++#endif
++	/* Change to L3(OFF) state */
++	core_if->lx_state = DWC_OTG_L3;
++
++	gintsts.d32 = 0;
++	gintsts.b.disconnect = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++	return 1;
++}
++
++/**
++ * This interrupt indicates that SUSPEND state has been detected on
++ * the USB.
++ *
++ * For HNP the USB Suspend interrupt signals the change from
++ * "a_peripheral" to "a_host".
++ *
++ * When power management is enabled the core will be put in low power
++ * mode.
++ */
++int32_t dwc_otg_handle_usb_suspend_intr(dwc_otg_core_if_t * core_if)
++{
++	dsts_data_t dsts;
++	gintsts_data_t gintsts;
++	dcfg_data_t dcfg;
++
++	DWC_DEBUGPL(DBG_ANY, "USB SUSPEND\n");
++
++	if (dwc_otg_is_device_mode(core_if)) {
++		/* Check the Device status register to determine if the Suspend
++		 * state is active. */
++		dsts.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++		DWC_DEBUGPL(DBG_PCD, "DSTS=0x%0x\n", dsts.d32);
++		DWC_DEBUGPL(DBG_PCD, "DSTS.Suspend Status=%d "
++			    "HWCFG4.power Optimize=%d\n",
++			    dsts.b.suspsts, core_if->hwcfg4.b.power_optimiz);
++
++#ifdef PARTIAL_POWER_DOWN
++/** @todo Add a module parameter for power management. */
++
++		if (dsts.b.suspsts && core_if->hwcfg4.b.power_optimiz) {
++			pcgcctl_data_t power = {.d32 = 0 };
++			DWC_DEBUGPL(DBG_CIL, "suspend\n");
++
++			power.b.pwrclmp = 1;
++			DWC_WRITE_REG32(core_if->pcgcctl, power.d32);
++
++			power.b.rstpdwnmodule = 1;
++			DWC_MODIFY_REG32(core_if->pcgcctl, 0, power.d32);
++
++			power.b.stoppclk = 1;
++			DWC_MODIFY_REG32(core_if->pcgcctl, 0, power.d32);
++
++		} else {
++			DWC_DEBUGPL(DBG_ANY, "disconnect?\n");
++		}
++#endif
++		/* PCD callback for suspend. Release the lock inside of callback function */
++		cil_pcd_suspend(core_if);
++		if (core_if->power_down == 2)
++		{
++			dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++			DWC_DEBUGPL(DBG_ANY,"lx_state = %08x\n",core_if->lx_state);
++			DWC_DEBUGPL(DBG_ANY," device address = %08d\n",dcfg.b.devaddr);
++
++			if (core_if->lx_state != DWC_OTG_L3 && dcfg.b.devaddr) {
++				pcgcctl_data_t pcgcctl = {.d32 = 0 };
++				gpwrdn_data_t gpwrdn = {.d32 = 0 };
++				gusbcfg_data_t gusbcfg = {.d32 = 0 };
++
++				/* Change to L2(suspend) state */
++				core_if->lx_state = DWC_OTG_L2;
++
++				/* Clear interrupt in gintsts */
++				gintsts.d32 = 0;
++				gintsts.b.usbsuspend = 1;
++				DWC_WRITE_REG32(&core_if->core_global_regs->
++						gintsts, gintsts.d32);
++				DWC_PRINTF("Start of hibernation completed\n");
++				dwc_otg_save_global_regs(core_if);
++				dwc_otg_save_dev_regs(core_if);
++
++				gusbcfg.d32 =
++				    DWC_READ_REG32(&core_if->core_global_regs->
++						   gusbcfg);
++				if (gusbcfg.b.ulpi_utmi_sel == 1) {
++					/* ULPI interface */
++					/* Suspend the Phy Clock */
++					pcgcctl.d32 = 0;
++					pcgcctl.b.stoppclk = 1;
++					DWC_MODIFY_REG32(core_if->pcgcctl, 0,
++							 pcgcctl.d32);
++					dwc_udelay(10);
++					gpwrdn.b.pmuactv = 1;
++					DWC_MODIFY_REG32(&core_if->
++							 core_global_regs->
++							 gpwrdn, 0, gpwrdn.d32);
++				} else {
++					/* UTMI+ Interface */
++					gpwrdn.b.pmuactv = 1;
++					DWC_MODIFY_REG32(&core_if->
++							 core_global_regs->
++							 gpwrdn, 0, gpwrdn.d32);
++					dwc_udelay(10);
++					pcgcctl.b.stoppclk = 1;
++					DWC_MODIFY_REG32(core_if->pcgcctl, 0,
++							 pcgcctl.d32);
++					dwc_udelay(10);
++				}
++
++				/* Set flag to indicate that we are in hibernation */
++				core_if->hibernation_suspend = 1;
++				/* Enable interrupts from wake up logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuintsel = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++				dwc_udelay(10);
++
++				/* Unmask device mode interrupts in GPWRDN */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.rst_det_msk = 1;
++				gpwrdn.b.lnstchng_msk = 1;
++				gpwrdn.b.sts_chngint_msk = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++				dwc_udelay(10);
++
++				/* Enable Power Down Clamp */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pwrdnclmp = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++				dwc_udelay(10);
++
++				/* Switch off VDD */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pwrdnswtch = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++
++				/* Save gpwrdn register for further usage if stschng interrupt */
++				core_if->gr_backup->gpwrdn_local =
++							DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++				DWC_PRINTF("Hibernation completed\n");
++
++				return 1;
++			}
++		} else if (core_if->power_down == 3) {
++			pcgcctl_data_t pcgcctl = {.d32 = 0 };
++			dcfg.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dcfg);
++			DWC_DEBUGPL(DBG_ANY, "lx_state = %08x\n",core_if->lx_state);
++			DWC_DEBUGPL(DBG_ANY, " device address = %08d\n",dcfg.b.devaddr);
++
++			if (core_if->lx_state != DWC_OTG_L3 && dcfg.b.devaddr) {
++				DWC_DEBUGPL(DBG_ANY, "Start entering to extended hibernation\n");
++				core_if->xhib = 1;
++
++				/* Clear interrupt in gintsts */
++				gintsts.d32 = 0;
++				gintsts.b.usbsuspend = 1;
++				DWC_WRITE_REG32(&core_if->core_global_regs->
++					gintsts, gintsts.d32);
++
++				dwc_otg_save_global_regs(core_if);
++				dwc_otg_save_dev_regs(core_if);
++
++				/* Wait for 10 PHY clocks */
++				dwc_udelay(10);
++
++				/* Program GPIO register while entering to xHib */
++				DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, 0x1);
++
++				pcgcctl.b.enbl_extnd_hiber = 1;
++				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
++				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
++
++				pcgcctl.d32 = 0;
++				pcgcctl.b.extnd_hiber_pwrclmp = 1;
++				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
++
++				pcgcctl.d32 = 0;
++				pcgcctl.b.extnd_hiber_switch = 1;
++				core_if->gr_backup->xhib_gpwrdn = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++				core_if->gr_backup->xhib_pcgcctl = DWC_READ_REG32(core_if->pcgcctl) | pcgcctl.d32;
++				DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
++
++				DWC_DEBUGPL(DBG_ANY, "Finished entering to extended hibernation\n");
++
++				return 1;
++			}
++		}
++	} else {
++		if (core_if->op_state == A_PERIPHERAL) {
++			DWC_DEBUGPL(DBG_ANY, "a_peripheral->a_host\n");
++			/* Clear the a_peripheral flag, back to a_host. */
++			DWC_SPINUNLOCK(core_if->lock);
++			cil_pcd_stop(core_if);
++			cil_hcd_start(core_if);
++			DWC_SPINLOCK(core_if->lock);
++			core_if->op_state = A_HOST;
++		}
++	}
++
++	/* Change to L2(suspend) state */
++	core_if->lx_state = DWC_OTG_L2;
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.usbsuspend = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++static int32_t dwc_otg_handle_xhib_exit_intr(dwc_otg_core_if_t * core_if)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	pcgcctl_data_t pcgcctl = {.d32 = 0 };
++	gahbcfg_data_t gahbcfg = {.d32 = 0 };
++
++	dwc_udelay(10);
++
++	/* Program GPIO register while entering to xHib */
++	DWC_WRITE_REG32(&core_if->core_global_regs->ggpio, 0x0);
++
++	pcgcctl.d32 = core_if->gr_backup->xhib_pcgcctl;
++	pcgcctl.b.extnd_hiber_pwrclmp = 0;
++	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++	dwc_udelay(10);
++
++	gpwrdn.d32 = core_if->gr_backup->xhib_gpwrdn;
++	gpwrdn.b.restore = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32);
++	dwc_udelay(10);
++
++	restore_lpm_i2c_regs(core_if);
++
++	pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
++	pcgcctl.b.max_xcvrselect = 1;
++	pcgcctl.b.ess_reg_restored = 0;
++	pcgcctl.b.extnd_hiber_switch = 0;
++	pcgcctl.b.extnd_hiber_pwrclmp = 0;
++	pcgcctl.b.enbl_extnd_hiber = 1;
++	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++
++	gahbcfg.d32 = core_if->gr_backup->gahbcfg_local;
++	gahbcfg.b.glblintrmsk = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gahbcfg, gahbcfg.d32);
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, 0xFFFFFFFF);
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, 0x1 << 16);
++
++	DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg,
++			core_if->gr_backup->gusbcfg_local);
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg,
++			core_if->dr_backup->dcfg);
++
++	pcgcctl.d32 = 0;
++	pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
++	pcgcctl.b.max_xcvrselect = 1;
++	pcgcctl.d32 |= 0x608;
++	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++	dwc_udelay(10);
++
++	pcgcctl.d32 = 0;
++	pcgcctl.d32 = core_if->gr_backup->pcgcctl_local & (0x3FFFF << 14);
++	pcgcctl.b.max_xcvrselect = 1;
++	pcgcctl.b.ess_reg_restored = 1;
++	pcgcctl.b.enbl_extnd_hiber = 1;
++	pcgcctl.b.rstpdwnmodule = 1;
++	pcgcctl.b.restoremode = 1;
++	DWC_WRITE_REG32(core_if->pcgcctl, pcgcctl.d32);
++
++	DWC_DEBUGPL(DBG_ANY, "%s called\n", __FUNCTION__);
++
++	return 1;
++}
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++/**
++ * This function hadles LPM transaction received interrupt.
++ */
++static int32_t dwc_otg_handle_lpm_intr(dwc_otg_core_if_t * core_if)
++{
++	glpmcfg_data_t lpmcfg;
++	gintsts_data_t gintsts;
++
++	if (!core_if->core_params->lpm_enable) {
++		DWC_PRINTF("Unexpected LPM interrupt\n");
++	}
++
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	DWC_PRINTF("LPM config register = 0x%08x\n", lpmcfg.d32);
++
++	if (dwc_otg_is_host_mode(core_if)) {
++		cil_hcd_sleep(core_if);
++	} else {
++		lpmcfg.b.hird_thres |= (1 << 4);
++		DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg,
++				lpmcfg.d32);
++	}
++
++	/* Examine prt_sleep_sts after TL1TokenTetry period max (10 us) */
++	dwc_udelay(10);
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	if (lpmcfg.b.prt_sleep_sts) {
++		/* Save the current state */
++		core_if->lx_state = DWC_OTG_L1;
++	}
++
++	/* Clear interrupt  */
++	gintsts.d32 = 0;
++	gintsts.b.lpmtranrcvd = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++	return 1;
++}
++#endif /* CONFIG_USB_DWC_OTG_LPM */
++
++/**
++ * This function returns the Core Interrupt register.
++ */
++static inline uint32_t dwc_otg_read_common_intr(dwc_otg_core_if_t * core_if, gintmsk_data_t *reenable_gintmsk, dwc_otg_hcd_t *hcd)
++{
++	gahbcfg_data_t gahbcfg = {.d32 = 0 };
++	gintsts_data_t gintsts;
++	gintmsk_data_t gintmsk;
++	gintmsk_data_t gintmsk_common = {.d32 = 0 };
++	gintmsk_common.b.wkupintr = 1;
++	gintmsk_common.b.sessreqintr = 1;
++	gintmsk_common.b.conidstschng = 1;
++	gintmsk_common.b.otgintr = 1;
++	gintmsk_common.b.modemismatch = 1;
++	gintmsk_common.b.disconnect = 1;
++	gintmsk_common.b.usbsuspend = 1;
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	gintmsk_common.b.lpmtranrcvd = 1;
++#endif
++	gintmsk_common.b.restoredone = 1;
++	if(dwc_otg_is_device_mode(core_if))
++	{
++		/** @todo: The port interrupt occurs while in device
++		 * mode. Added code to CIL to clear the interrupt for now!
++		 */
++		gintmsk_common.b.portintr = 1;
++	}
++	if(fiq_enable) {
++		local_fiq_disable();
++		fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++		gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++		gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
++		/* Pull in the interrupts that the FIQ has masked */
++		gintmsk.d32 |= ~(hcd->fiq_state->gintmsk_saved.d32);
++		gintmsk.d32 |= gintmsk_common.d32;
++		/* for the upstairs function to reenable - have to read it here in case FIQ triggers again */
++		reenable_gintmsk->d32 = gintmsk.d32;
++		fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++		local_fiq_enable();
++	} else {
++		gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++		gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
++	}
++
++	gahbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gahbcfg);
++
++#ifdef DEBUG
++	/* if any common interrupts set */
++	if (gintsts.d32 & gintmsk_common.d32) {
++		DWC_DEBUGPL(DBG_ANY, "common_intr: gintsts=%08x  gintmsk=%08x\n",
++			    gintsts.d32, gintmsk.d32);
++	}
++#endif
++	if (!fiq_enable){
++		if (gahbcfg.b.glblintrmsk)
++			return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32);
++		else
++			return 0;
++	} else {
++		/* Our IRQ kicker is no longer the USB hardware, it's the MPHI interface.
++		 * Can't trust the global interrupt mask bit in this case.
++		 */
++		return ((gintsts.d32 & gintmsk.d32) & gintmsk_common.d32);
++	}
++
++}
++
++/* MACRO for clearing interupt bits in GPWRDN register */
++#define CLEAR_GPWRDN_INTR(__core_if,__intr) \
++do { \
++		gpwrdn_data_t gpwrdn = {.d32=0}; \
++		gpwrdn.b.__intr = 1; \
++		DWC_MODIFY_REG32(&__core_if->core_global_regs->gpwrdn, \
++		0, gpwrdn.d32); \
++} while (0)
++
++/**
++ * Common interrupt handler.
++ *
++ * The common interrupts are those that occur in both Host and Device mode.
++ * This handler handles the following interrupts:
++ * - Mode Mismatch Interrupt
++ * - Disconnect Interrupt
++ * - OTG Interrupt
++ * - Connector ID Status Change Interrupt
++ * - Session Request Interrupt.
++ * - Resume / Remote Wakeup Detected Interrupt.
++ * - LPM Transaction Received Interrupt
++ * - ADP Transaction Received Interrupt
++ *
++ */
++int32_t dwc_otg_handle_common_intr(void *dev)
++{
++	int retval = 0;
++	gintsts_data_t gintsts;
++	gintmsk_data_t gintmsk_reenable = { .d32 = 0 };
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	dwc_otg_device_t *otg_dev = dev;
++	dwc_otg_core_if_t *core_if = otg_dev->core_if;
++	gpwrdn.d32 = DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++	if (dwc_otg_is_device_mode(core_if))
++		core_if->frame_num = dwc_otg_get_frame_number(core_if);
++
++	if (core_if->lock)
++		DWC_SPINLOCK(core_if->lock);
++
++	if (core_if->power_down == 3 && core_if->xhib == 1) {
++		DWC_DEBUGPL(DBG_ANY, "Exiting from xHIB state\n");
++		retval |= dwc_otg_handle_xhib_exit_intr(core_if);
++		core_if->xhib = 2;
++		if (core_if->lock)
++			DWC_SPINUNLOCK(core_if->lock);
++
++		return retval;
++	}
++
++	if (core_if->hibernation_suspend <= 0) {
++		/* read_common will have to poke the FIQ's saved mask. We must then clear this mask at the end
++		 * of this handler - god only knows why it's done like this
++		 */
++		gintsts.d32 = dwc_otg_read_common_intr(core_if, &gintmsk_reenable, otg_dev->hcd);
++
++		if (gintsts.b.modemismatch) {
++			retval |= dwc_otg_handle_mode_mismatch_intr(core_if);
++		}
++		if (gintsts.b.otgintr) {
++			retval |= dwc_otg_handle_otg_intr(core_if);
++		}
++		if (gintsts.b.conidstschng) {
++			retval |=
++			    dwc_otg_handle_conn_id_status_change_intr(core_if);
++		}
++		if (gintsts.b.disconnect) {
++			retval |= dwc_otg_handle_disconnect_intr(core_if);
++		}
++		if (gintsts.b.sessreqintr) {
++			retval |= dwc_otg_handle_session_req_intr(core_if);
++		}
++		if (gintsts.b.wkupintr) {
++			retval |= dwc_otg_handle_wakeup_detected_intr(core_if);
++		}
++		if (gintsts.b.usbsuspend) {
++			retval |= dwc_otg_handle_usb_suspend_intr(core_if);
++		}
++#ifdef CONFIG_USB_DWC_OTG_LPM
++		if (gintsts.b.lpmtranrcvd) {
++			retval |= dwc_otg_handle_lpm_intr(core_if);
++		}
++#endif
++		if (gintsts.b.restoredone) {
++			gintsts.d32 = 0;
++	                if (core_if->power_down == 2)
++				core_if->hibernation_suspend = -1;
++			else if (core_if->power_down == 3 && core_if->xhib == 2) {
++				gpwrdn_data_t gpwrdn = {.d32 = 0 };
++				pcgcctl_data_t pcgcctl = {.d32 = 0 };
++				dctl_data_t dctl = {.d32 = 0 };
++
++				DWC_WRITE_REG32(&core_if->core_global_regs->
++						gintsts, 0xFFFFFFFF);
++
++				DWC_DEBUGPL(DBG_ANY,
++					    "RESTORE DONE generated\n");
++
++				gpwrdn.b.restore = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++				dwc_udelay(10);
++
++				pcgcctl.b.rstpdwnmodule = 1;
++				DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
++
++				DWC_WRITE_REG32(&core_if->core_global_regs->gusbcfg, core_if->gr_backup->gusbcfg_local);
++				DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dcfg, core_if->dr_backup->dcfg);
++				DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, core_if->dr_backup->dctl);
++				dwc_udelay(50);
++
++				dctl.b.pwronprgdone = 1;
++				DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
++				dwc_udelay(10);
++
++				dwc_otg_restore_global_regs(core_if);
++				dwc_otg_restore_dev_regs(core_if, 0);
++
++				dctl.d32 = 0;
++				dctl.b.pwronprgdone = 1;
++				DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
++				dwc_udelay(10);
++
++				pcgcctl.d32 = 0;
++				pcgcctl.b.enbl_extnd_hiber = 1;
++				DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
++
++				/* The core will be in ON STATE */
++				core_if->lx_state = DWC_OTG_L0;
++				core_if->xhib = 0;
++
++				DWC_SPINUNLOCK(core_if->lock);
++				if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
++					core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
++				}
++				DWC_SPINLOCK(core_if->lock);
++
++			}
++
++			gintsts.b.restoredone = 1;
++			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts,gintsts.d32);
++			DWC_PRINTF(" --Restore done interrupt received-- \n");
++			retval |= 1;
++		}
++		if (gintsts.b.portintr && dwc_otg_is_device_mode(core_if)) {
++			/* The port interrupt occurs while in device mode with HPRT0
++			 * Port Enable/Disable.
++			 */
++			gintsts.d32 = 0;
++			gintsts.b.portintr = 1;
++			DWC_WRITE_REG32(&core_if->core_global_regs->gintsts,gintsts.d32);
++			retval |= 1;
++			gintmsk_reenable.b.portintr = 1;
++
++		}
++		/* Did we actually handle anything? if so, unmask the interrupt */
++//		fiq_print(FIQDBG_INT, otg_dev->hcd->fiq_state, "CILOUT %1d", retval);
++//		fiq_print(FIQDBG_INT, otg_dev->hcd->fiq_state, "%08x", gintsts.d32);
++//		fiq_print(FIQDBG_INT, otg_dev->hcd->fiq_state, "%08x", gintmsk_reenable.d32);
++		if (retval && fiq_enable) {
++			DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk_reenable.d32);
++		}
++
++	} else {
++		DWC_DEBUGPL(DBG_ANY, "gpwrdn=%08x\n", gpwrdn.d32);
++
++		if (gpwrdn.b.disconn_det && gpwrdn.b.disconn_det_msk) {
++			CLEAR_GPWRDN_INTR(core_if, disconn_det);
++			if (gpwrdn.b.linestate == 0) {
++				dwc_otg_handle_pwrdn_disconnect_intr(core_if);
++			} else {
++				DWC_PRINTF("Disconnect detected while linestate is not 0\n");
++			}
++
++			retval |= 1;
++		}
++		if (gpwrdn.b.lnstschng && gpwrdn.b.lnstchng_msk) {
++			CLEAR_GPWRDN_INTR(core_if, lnstschng);
++			/* remote wakeup from hibernation */
++			if (gpwrdn.b.linestate == 2 || gpwrdn.b.linestate == 1) {
++				dwc_otg_handle_pwrdn_wakeup_detected_intr(core_if);
++			} else {
++				DWC_PRINTF("gpwrdn.linestate = %d\n", gpwrdn.b.linestate);
++			}
++			retval |= 1;
++		}
++		if (gpwrdn.b.rst_det && gpwrdn.b.rst_det_msk) {
++			CLEAR_GPWRDN_INTR(core_if, rst_det);
++			if (gpwrdn.b.linestate == 0) {
++				DWC_PRINTF("Reset detected\n");
++				retval |= dwc_otg_device_hibernation_restore(core_if, 0, 1);
++			}
++		}
++		if (gpwrdn.b.srp_det && gpwrdn.b.srp_det_msk) {
++			CLEAR_GPWRDN_INTR(core_if, srp_det);
++			dwc_otg_handle_pwrdn_srp_intr(core_if);
++			retval |= 1;
++		}
++	}
++	/* Handle ADP interrupt here */
++	if (gpwrdn.b.adp_int) {
++		DWC_PRINTF("ADP interrupt\n");
++		CLEAR_GPWRDN_INTR(core_if, adp_int);
++		dwc_otg_adp_handle_intr(core_if);
++		retval |= 1;
++	}
++	if (gpwrdn.b.sts_chngint && gpwrdn.b.sts_chngint_msk) {
++		DWC_PRINTF("STS CHNG interrupt asserted\n");
++		CLEAR_GPWRDN_INTR(core_if, sts_chngint);
++		dwc_otg_handle_pwrdn_stschng_intr(otg_dev);
++
++		retval |= 1;
++	}
++	if (core_if->lock)
++		DWC_SPINUNLOCK(core_if->lock);
++	return retval;
++}
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_core_if.h
+@@ -0,0 +1,705 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_core_if.h $
++ * $Revision: #13 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#if !defined(__DWC_CORE_IF_H__)
++#define __DWC_CORE_IF_H__
++
++#include "dwc_os.h"
++
++/** @file
++ * This file defines DWC_OTG Core API
++ */
++
++struct dwc_otg_core_if;
++typedef struct dwc_otg_core_if dwc_otg_core_if_t;
++
++/** Maximum number of Periodic FIFOs */
++#define MAX_PERIO_FIFOS 15
++/** Maximum number of Periodic FIFOs */
++#define MAX_TX_FIFOS 15
++
++/** Maximum number of Endpoints/HostChannels */
++#define MAX_EPS_CHANNELS 16
++
++extern dwc_otg_core_if_t *dwc_otg_cil_init(const uint32_t * _reg_base_addr);
++extern void dwc_otg_core_init(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_cil_remove(dwc_otg_core_if_t * _core_if);
++
++extern void dwc_otg_enable_global_interrupts(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_disable_global_interrupts(dwc_otg_core_if_t * _core_if);
++
++extern uint8_t dwc_otg_is_device_mode(dwc_otg_core_if_t * _core_if);
++extern uint8_t dwc_otg_is_host_mode(dwc_otg_core_if_t * _core_if);
++
++extern uint8_t dwc_otg_is_dma_enable(dwc_otg_core_if_t * core_if);
++
++/** This function should be called on every hardware interrupt. */
++extern int32_t dwc_otg_handle_common_intr(void *otg_dev);
++
++/** @name OTG Core Parameters */
++/** @{ */
++
++/**
++ * Specifies the OTG capabilities. The driver will automatically
++ * detect the value for this parameter if none is specified.
++ * 0 - HNP and SRP capable (default)
++ * 1 - SRP Only capable
++ * 2 - No HNP/SRP capable
++ */
++extern int dwc_otg_set_param_otg_cap(dwc_otg_core_if_t * core_if, int32_t val);
++extern int32_t dwc_otg_get_param_otg_cap(dwc_otg_core_if_t * core_if);
++#define DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE 0
++#define DWC_OTG_CAP_PARAM_SRP_ONLY_CAPABLE 1
++#define DWC_OTG_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
++#define dwc_param_otg_cap_default DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE
++
++extern int dwc_otg_set_param_opt(dwc_otg_core_if_t * core_if, int32_t val);
++extern int32_t dwc_otg_get_param_opt(dwc_otg_core_if_t * core_if);
++#define dwc_param_opt_default 1
++
++/**
++ * Specifies whether to use slave or DMA mode for accessing the data
++ * FIFOs. The driver will automatically detect the value for this
++ * parameter if none is specified.
++ * 0 - Slave
++ * 1 - DMA (default, if available)
++ */
++extern int dwc_otg_set_param_dma_enable(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_dma_enable(dwc_otg_core_if_t * core_if);
++#define dwc_param_dma_enable_default 1
++
++/**
++ * When DMA mode is enabled specifies whether to use
++ * address DMA or DMA Descritor mode for accessing the data
++ * FIFOs in device mode. The driver will automatically detect
++ * the value for this parameter if none is specified.
++ * 0 - address DMA
++ * 1 - DMA Descriptor(default, if available)
++ */
++extern int dwc_otg_set_param_dma_desc_enable(dwc_otg_core_if_t * core_if,
++					     int32_t val);
++extern int32_t dwc_otg_get_param_dma_desc_enable(dwc_otg_core_if_t * core_if);
++//#define dwc_param_dma_desc_enable_default 1
++#define dwc_param_dma_desc_enable_default 0 // Broadcom BCM2708
++
++/** The DMA Burst size (applicable only for External DMA
++ * Mode). 1, 4, 8 16, 32, 64, 128, 256 (default 32)
++ */
++extern int dwc_otg_set_param_dma_burst_size(dwc_otg_core_if_t * core_if,
++					    int32_t val);
++extern int32_t dwc_otg_get_param_dma_burst_size(dwc_otg_core_if_t * core_if);
++#define dwc_param_dma_burst_size_default 32
++
++/**
++ * Specifies the maximum speed of operation in host and device mode.
++ * The actual speed depends on the speed of the attached device and
++ * the value of phy_type. The actual speed depends on the speed of the
++ * attached device.
++ * 0 - High Speed (default)
++ * 1 - Full Speed
++ */
++extern int dwc_otg_set_param_speed(dwc_otg_core_if_t * core_if, int32_t val);
++extern int32_t dwc_otg_get_param_speed(dwc_otg_core_if_t * core_if);
++#define dwc_param_speed_default 0
++#define DWC_SPEED_PARAM_HIGH 0
++#define DWC_SPEED_PARAM_FULL 1
++
++/** Specifies whether low power mode is supported when attached
++ *	to a Full Speed or Low Speed device in host mode.
++ * 0 - Don't support low power mode (default)
++ * 1 - Support low power mode
++ */
++extern int dwc_otg_set_param_host_support_fs_ls_low_power(dwc_otg_core_if_t *
++							  core_if, int32_t val);
++extern int32_t dwc_otg_get_param_host_support_fs_ls_low_power(dwc_otg_core_if_t
++							      * core_if);
++#define dwc_param_host_support_fs_ls_low_power_default 0
++
++/** Specifies the PHY clock rate in low power mode when connected to a
++ * Low Speed device in host mode. This parameter is applicable only if
++ * HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
++ * then defaults to 6 MHZ otherwise 48 MHZ.
++ *
++ * 0 - 48 MHz
++ * 1 - 6 MHz
++ */
++extern int dwc_otg_set_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t *
++						       core_if, int32_t val);
++extern int32_t dwc_otg_get_param_host_ls_low_power_phy_clk(dwc_otg_core_if_t *
++							   core_if);
++#define dwc_param_host_ls_low_power_phy_clk_default 0
++#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0
++#define DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1
++
++/**
++ * 0 - Use cC FIFO size parameters
++ * 1 - Allow dynamic FIFO sizing (default)
++ */
++extern int dwc_otg_set_param_enable_dynamic_fifo(dwc_otg_core_if_t * core_if,
++						 int32_t val);
++extern int32_t dwc_otg_get_param_enable_dynamic_fifo(dwc_otg_core_if_t *
++						     core_if);
++#define dwc_param_enable_dynamic_fifo_default 1
++
++/** Total number of 4-byte words in the data FIFO memory. This
++ * memory includes the Rx FIFO, non-periodic Tx FIFO, and periodic
++ * Tx FIFOs.
++ * 32 to 32768 (default 8192)
++ * Note: The total FIFO memory depth in the FPGA configuration is 8192.
++ */
++extern int dwc_otg_set_param_data_fifo_size(dwc_otg_core_if_t * core_if,
++					    int32_t val);
++extern int32_t dwc_otg_get_param_data_fifo_size(dwc_otg_core_if_t * core_if);
++//#define dwc_param_data_fifo_size_default 8192
++#define dwc_param_data_fifo_size_default 0xFF0 // Broadcom BCM2708
++
++/** Number of 4-byte words in the Rx FIFO in device mode when dynamic
++ * FIFO sizing is enabled.
++ * 16 to 32768 (default 1064)
++ */
++extern int dwc_otg_set_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if,
++					      int32_t val);
++extern int32_t dwc_otg_get_param_dev_rx_fifo_size(dwc_otg_core_if_t * core_if);
++#define dwc_param_dev_rx_fifo_size_default 1064
++
++/** Number of 4-byte words in the non-periodic Tx FIFO in device mode
++ * when dynamic FIFO sizing is enabled.
++ * 16 to 32768 (default 1024)
++ */
++extern int dwc_otg_set_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t *
++						     core_if, int32_t val);
++extern int32_t dwc_otg_get_param_dev_nperio_tx_fifo_size(dwc_otg_core_if_t *
++							 core_if);
++#define dwc_param_dev_nperio_tx_fifo_size_default 1024
++
++/** Number of 4-byte words in each of the periodic Tx FIFOs in device
++ * mode when dynamic FIFO sizing is enabled.
++ * 4 to 768 (default 256)
++ */
++extern int dwc_otg_set_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t * core_if,
++						    int32_t val, int fifo_num);
++extern int32_t dwc_otg_get_param_dev_perio_tx_fifo_size(dwc_otg_core_if_t *
++							core_if, int fifo_num);
++#define dwc_param_dev_perio_tx_fifo_size_default 256
++
++/** Number of 4-byte words in the Rx FIFO in host mode when dynamic
++ * FIFO sizing is enabled.
++ * 16 to 32768 (default 1024)
++ */
++extern int dwc_otg_set_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if,
++					       int32_t val);
++extern int32_t dwc_otg_get_param_host_rx_fifo_size(dwc_otg_core_if_t * core_if);
++//#define dwc_param_host_rx_fifo_size_default 1024
++#define dwc_param_host_rx_fifo_size_default 774 // Broadcom BCM2708
++
++/** Number of 4-byte words in the non-periodic Tx FIFO in host mode
++ * when Dynamic FIFO sizing is enabled in the core.
++ * 16 to 32768 (default 1024)
++ */
++extern int dwc_otg_set_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t *
++						      core_if, int32_t val);
++extern int32_t dwc_otg_get_param_host_nperio_tx_fifo_size(dwc_otg_core_if_t *
++							  core_if);
++//#define dwc_param_host_nperio_tx_fifo_size_default 1024
++#define dwc_param_host_nperio_tx_fifo_size_default 0x100 // Broadcom BCM2708
++
++/** Number of 4-byte words in the host periodic Tx FIFO when dynamic
++ * FIFO sizing is enabled.
++ * 16 to 32768 (default 1024)
++ */
++extern int dwc_otg_set_param_host_perio_tx_fifo_size(dwc_otg_core_if_t *
++						     core_if, int32_t val);
++extern int32_t dwc_otg_get_param_host_perio_tx_fifo_size(dwc_otg_core_if_t *
++							 core_if);
++//#define dwc_param_host_perio_tx_fifo_size_default 1024
++#define dwc_param_host_perio_tx_fifo_size_default 0x200 // Broadcom BCM2708
++
++/** The maximum transfer size supported in bytes.
++ * 2047 to 65,535  (default 65,535)
++ */
++extern int dwc_otg_set_param_max_transfer_size(dwc_otg_core_if_t * core_if,
++					       int32_t val);
++extern int32_t dwc_otg_get_param_max_transfer_size(dwc_otg_core_if_t * core_if);
++#define dwc_param_max_transfer_size_default 65535
++
++/** The maximum number of packets in a transfer.
++ * 15 to 511  (default 511)
++ */
++extern int dwc_otg_set_param_max_packet_count(dwc_otg_core_if_t * core_if,
++					      int32_t val);
++extern int32_t dwc_otg_get_param_max_packet_count(dwc_otg_core_if_t * core_if);
++#define dwc_param_max_packet_count_default 511
++
++/** The number of host channel registers to use.
++ * 1 to 16 (default 12)
++ * Note: The FPGA configuration supports a maximum of 12 host channels.
++ */
++extern int dwc_otg_set_param_host_channels(dwc_otg_core_if_t * core_if,
++					   int32_t val);
++extern int32_t dwc_otg_get_param_host_channels(dwc_otg_core_if_t * core_if);
++//#define dwc_param_host_channels_default 12
++#define dwc_param_host_channels_default 8 // Broadcom BCM2708
++
++/** The number of endpoints in addition to EP0 available for device
++ * mode operations.
++ * 1 to 15 (default 6 IN and OUT)
++ * Note: The FPGA configuration supports a maximum of 6 IN and OUT
++ * endpoints in addition to EP0.
++ */
++extern int dwc_otg_set_param_dev_endpoints(dwc_otg_core_if_t * core_if,
++					   int32_t val);
++extern int32_t dwc_otg_get_param_dev_endpoints(dwc_otg_core_if_t * core_if);
++#define dwc_param_dev_endpoints_default 6
++
++/**
++ * Specifies the type of PHY interface to use. By default, the driver
++ * will automatically detect the phy_type.
++ *
++ * 0 - Full Speed PHY
++ * 1 - UTMI+ (default)
++ * 2 - ULPI
++ */
++extern int dwc_otg_set_param_phy_type(dwc_otg_core_if_t * core_if, int32_t val);
++extern int32_t dwc_otg_get_param_phy_type(dwc_otg_core_if_t * core_if);
++#define DWC_PHY_TYPE_PARAM_FS 0
++#define DWC_PHY_TYPE_PARAM_UTMI 1
++#define DWC_PHY_TYPE_PARAM_ULPI 2
++#define dwc_param_phy_type_default DWC_PHY_TYPE_PARAM_UTMI
++
++/**
++ * Specifies the UTMI+ Data Width. This parameter is
++ * applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
++ * PHY_TYPE, this parameter indicates the data width between
++ * the MAC and the ULPI Wrapper.) Also, this parameter is
++ * applicable only if the OTG_HSPHY_WIDTH cC parameter was set
++ * to "8 and 16 bits", meaning that the core has been
++ * configured to work at either data path width.
++ *
++ * 8 or 16 bits (default 16)
++ */
++extern int dwc_otg_set_param_phy_utmi_width(dwc_otg_core_if_t * core_if,
++					    int32_t val);
++extern int32_t dwc_otg_get_param_phy_utmi_width(dwc_otg_core_if_t * core_if);
++//#define dwc_param_phy_utmi_width_default 16
++#define dwc_param_phy_utmi_width_default 8 // Broadcom BCM2708
++
++/**
++ * Specifies whether the ULPI operates at double or single
++ * data rate. This parameter is only applicable if PHY_TYPE is
++ * ULPI.
++ *
++ * 0 - single data rate ULPI interface with 8 bit wide data
++ * bus (default)
++ * 1 - double data rate ULPI interface with 4 bit wide data
++ * bus
++ */
++extern int dwc_otg_set_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if,
++					  int32_t val);
++extern int32_t dwc_otg_get_param_phy_ulpi_ddr(dwc_otg_core_if_t * core_if);
++#define dwc_param_phy_ulpi_ddr_default 0
++
++/**
++ * Specifies whether to use the internal or external supply to
++ * drive the vbus with a ULPI phy.
++ */
++extern int dwc_otg_set_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if,
++					       int32_t val);
++extern int32_t dwc_otg_get_param_phy_ulpi_ext_vbus(dwc_otg_core_if_t * core_if);
++#define DWC_PHY_ULPI_INTERNAL_VBUS 0
++#define DWC_PHY_ULPI_EXTERNAL_VBUS 1
++#define dwc_param_phy_ulpi_ext_vbus_default DWC_PHY_ULPI_INTERNAL_VBUS
++
++/**
++ * Specifies whether to use the I2Cinterface for full speed PHY. This
++ * parameter is only applicable if PHY_TYPE is FS.
++ * 0 - No (default)
++ * 1 - Yes
++ */
++extern int dwc_otg_set_param_i2c_enable(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_i2c_enable(dwc_otg_core_if_t * core_if);
++#define dwc_param_i2c_enable_default 0
++
++extern int dwc_otg_set_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_ulpi_fs_ls(dwc_otg_core_if_t * core_if);
++#define dwc_param_ulpi_fs_ls_default 0
++
++extern int dwc_otg_set_param_ts_dline(dwc_otg_core_if_t * core_if, int32_t val);
++extern int32_t dwc_otg_get_param_ts_dline(dwc_otg_core_if_t * core_if);
++#define dwc_param_ts_dline_default 0
++
++/**
++ * Specifies whether dedicated transmit FIFOs are
++ * enabled for non periodic IN endpoints in device mode
++ * 0 - No
++ * 1 - Yes
++ */
++extern int dwc_otg_set_param_en_multiple_tx_fifo(dwc_otg_core_if_t * core_if,
++						 int32_t val);
++extern int32_t dwc_otg_get_param_en_multiple_tx_fifo(dwc_otg_core_if_t *
++						     core_if);
++#define dwc_param_en_multiple_tx_fifo_default 1
++
++/** Number of 4-byte words in each of the Tx FIFOs in device
++ * mode when dynamic FIFO sizing is enabled.
++ * 4 to 768 (default 256)
++ */
++extern int dwc_otg_set_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
++					      int fifo_num, int32_t val);
++extern int32_t dwc_otg_get_param_dev_tx_fifo_size(dwc_otg_core_if_t * core_if,
++						  int fifo_num);
++#define dwc_param_dev_tx_fifo_size_default 768
++
++/** Thresholding enable flag-
++ * bit 0 - enable non-ISO Tx thresholding
++ * bit 1 - enable ISO Tx thresholding
++ * bit 2 - enable Rx thresholding
++ */
++extern int dwc_otg_set_param_thr_ctl(dwc_otg_core_if_t * core_if, int32_t val);
++extern int32_t dwc_otg_get_thr_ctl(dwc_otg_core_if_t * core_if, int fifo_num);
++#define dwc_param_thr_ctl_default 0
++
++/** Thresholding length for Tx
++ * FIFOs in 32 bit DWORDs
++ */
++extern int dwc_otg_set_param_tx_thr_length(dwc_otg_core_if_t * core_if,
++					   int32_t val);
++extern int32_t dwc_otg_get_tx_thr_length(dwc_otg_core_if_t * core_if);
++#define dwc_param_tx_thr_length_default 64
++
++/** Thresholding length for Rx
++ *	FIFOs in 32 bit DWORDs
++ */
++extern int dwc_otg_set_param_rx_thr_length(dwc_otg_core_if_t * core_if,
++					   int32_t val);
++extern int32_t dwc_otg_get_rx_thr_length(dwc_otg_core_if_t * core_if);
++#define dwc_param_rx_thr_length_default 64
++
++/**
++ * Specifies whether LPM (Link Power Management) support is enabled
++ */
++extern int dwc_otg_set_param_lpm_enable(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_lpm_enable(dwc_otg_core_if_t * core_if);
++#define dwc_param_lpm_enable_default 1
++
++/**
++ * Specifies whether PTI enhancement is enabled
++ */
++extern int dwc_otg_set_param_pti_enable(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_pti_enable(dwc_otg_core_if_t * core_if);
++#define dwc_param_pti_enable_default 0
++
++/**
++ * Specifies whether MPI enhancement is enabled
++ */
++extern int dwc_otg_set_param_mpi_enable(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_mpi_enable(dwc_otg_core_if_t * core_if);
++#define dwc_param_mpi_enable_default 0
++
++/**
++ * Specifies whether ADP capability is enabled
++ */
++extern int dwc_otg_set_param_adp_enable(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_adp_enable(dwc_otg_core_if_t * core_if);
++#define dwc_param_adp_enable_default 0
++
++/**
++ * Specifies whether IC_USB capability is enabled
++ */
++
++extern int dwc_otg_set_param_ic_usb_cap(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_ic_usb_cap(dwc_otg_core_if_t * core_if);
++#define dwc_param_ic_usb_cap_default 0
++
++extern int dwc_otg_set_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if,
++					   int32_t val);
++extern int32_t dwc_otg_get_param_ahb_thr_ratio(dwc_otg_core_if_t * core_if);
++#define dwc_param_ahb_thr_ratio_default 0
++
++extern int dwc_otg_set_param_power_down(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_power_down(dwc_otg_core_if_t * core_if);
++#define dwc_param_power_down_default 0
++
++extern int dwc_otg_set_param_reload_ctl(dwc_otg_core_if_t * core_if,
++					int32_t val);
++extern int32_t dwc_otg_get_param_reload_ctl(dwc_otg_core_if_t * core_if);
++#define dwc_param_reload_ctl_default 0
++
++extern int dwc_otg_set_param_dev_out_nak(dwc_otg_core_if_t * core_if,
++										int32_t val);
++extern int32_t dwc_otg_get_param_dev_out_nak(dwc_otg_core_if_t * core_if);
++#define dwc_param_dev_out_nak_default 0
++
++extern int dwc_otg_set_param_cont_on_bna(dwc_otg_core_if_t * core_if,
++										 int32_t val);
++extern int32_t dwc_otg_get_param_cont_on_bna(dwc_otg_core_if_t * core_if);
++#define dwc_param_cont_on_bna_default 0
++
++extern int dwc_otg_set_param_ahb_single(dwc_otg_core_if_t * core_if,
++										 int32_t val);
++extern int32_t dwc_otg_get_param_ahb_single(dwc_otg_core_if_t * core_if);
++#define dwc_param_ahb_single_default 0
++
++extern int dwc_otg_set_param_otg_ver(dwc_otg_core_if_t * core_if, int32_t val);
++extern int32_t dwc_otg_get_param_otg_ver(dwc_otg_core_if_t * core_if);
++#define dwc_param_otg_ver_default 0
++
++/** @} */
++
++/** @name Access to registers and bit-fields */
++
++/**
++ * Dump core registers and SPRAM
++ */
++extern void dwc_otg_dump_dev_registers(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_dump_spram(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_dump_host_registers(dwc_otg_core_if_t * _core_if);
++extern void dwc_otg_dump_global_registers(dwc_otg_core_if_t * _core_if);
++
++/**
++ * Get host negotiation status.
++ */
++extern uint32_t dwc_otg_get_hnpstatus(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get srp status
++ */
++extern uint32_t dwc_otg_get_srpstatus(dwc_otg_core_if_t * core_if);
++
++/**
++ * Set hnpreq bit in the GOTGCTL register.
++ */
++extern void dwc_otg_set_hnpreq(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get Content of SNPSID register.
++ */
++extern uint32_t dwc_otg_get_gsnpsid(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get current mode.
++ * Returns 0 if in device mode, and 1 if in host mode.
++ */
++extern uint32_t dwc_otg_get_mode(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get value of hnpcapable field in the GUSBCFG register
++ */
++extern uint32_t dwc_otg_get_hnpcapable(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of hnpcapable field in the GUSBCFG register
++ */
++extern void dwc_otg_set_hnpcapable(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of srpcapable field in the GUSBCFG register
++ */
++extern uint32_t dwc_otg_get_srpcapable(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of srpcapable field in the GUSBCFG register
++ */
++extern void dwc_otg_set_srpcapable(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of devspeed field in the DCFG register
++ */
++extern uint32_t dwc_otg_get_devspeed(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of devspeed field in the DCFG register
++ */
++extern void dwc_otg_set_devspeed(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get the value of busconnected field from the HPRT0 register
++ */
++extern uint32_t dwc_otg_get_busconnected(dwc_otg_core_if_t * core_if);
++
++/**
++ * Gets the device enumeration Speed.
++ */
++extern uint32_t dwc_otg_get_enumspeed(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get value of prtpwr field from the HPRT0 register
++ */
++extern uint32_t dwc_otg_get_prtpower(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get value of flag indicating core state - hibernated or not
++ */
++extern uint32_t dwc_otg_get_core_state(dwc_otg_core_if_t * core_if);
++
++/**
++ * Set value of prtpwr field from the HPRT0 register
++ */
++extern void dwc_otg_set_prtpower(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of prtsusp field from the HPRT0 regsiter
++ */
++extern uint32_t dwc_otg_get_prtsuspend(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of prtpwr field from the HPRT0 register
++ */
++extern void dwc_otg_set_prtsuspend(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of ModeChTimEn field from the HCFG regsiter
++ */
++extern uint32_t dwc_otg_get_mode_ch_tim(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of ModeChTimEn field from the HCFG regsiter
++ */
++extern void dwc_otg_set_mode_ch_tim(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of Fram Interval field from the HFIR regsiter
++ */
++extern uint32_t dwc_otg_get_fr_interval(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of Frame Interval field from the HFIR regsiter
++ */
++extern void dwc_otg_set_fr_interval(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Set value of prtres field from the HPRT0 register
++ *FIXME Remove?
++ */
++extern void dwc_otg_set_prtresume(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of rmtwkupsig bit in DCTL register
++ */
++extern uint32_t dwc_otg_get_remotewakesig(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get value of prt_sleep_sts field from the GLPMCFG register
++ */
++extern uint32_t dwc_otg_get_lpm_portsleepstatus(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get value of rem_wkup_en field from the GLPMCFG register
++ */
++extern uint32_t dwc_otg_get_lpm_remotewakeenabled(dwc_otg_core_if_t * core_if);
++
++/**
++ * Get value of appl_resp field from the GLPMCFG register
++ */
++extern uint32_t dwc_otg_get_lpmresponse(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of appl_resp field from the GLPMCFG register
++ */
++extern void dwc_otg_set_lpmresponse(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of hsic_connect field from the GLPMCFG register
++ */
++extern uint32_t dwc_otg_get_hsic_connect(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of hsic_connect field from the GLPMCFG register
++ */
++extern void dwc_otg_set_hsic_connect(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * Get value of inv_sel_hsic field from the GLPMCFG register.
++ */
++extern uint32_t dwc_otg_get_inv_sel_hsic(dwc_otg_core_if_t * core_if);
++/**
++ * Set value of inv_sel_hsic field from the GLPMFG register.
++ */
++extern void dwc_otg_set_inv_sel_hsic(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/*
++ * Some functions for accessing registers
++ */
++
++/**
++ *  GOTGCTL register
++ */
++extern uint32_t dwc_otg_get_gotgctl(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_gotgctl(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * GUSBCFG register
++ */
++extern uint32_t dwc_otg_get_gusbcfg(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_gusbcfg(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * GRXFSIZ register
++ */
++extern uint32_t dwc_otg_get_grxfsiz(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_grxfsiz(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * GNPTXFSIZ register
++ */
++extern uint32_t dwc_otg_get_gnptxfsiz(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_gnptxfsiz(dwc_otg_core_if_t * core_if, uint32_t val);
++
++extern uint32_t dwc_otg_get_gpvndctl(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_gpvndctl(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * GGPIO register
++ */
++extern uint32_t dwc_otg_get_ggpio(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_ggpio(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * GUID register
++ */
++extern uint32_t dwc_otg_get_guid(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_guid(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * HPRT0 register
++ */
++extern uint32_t dwc_otg_get_hprt0(dwc_otg_core_if_t * core_if);
++extern void dwc_otg_set_hprt0(dwc_otg_core_if_t * core_if, uint32_t val);
++
++/**
++ * GHPTXFSIZE
++ */
++extern uint32_t dwc_otg_get_hptxfsiz(dwc_otg_core_if_t * core_if);
++
++/** @} */
++
++#endif				/* __DWC_CORE_IF_H__ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_dbg.h
+@@ -0,0 +1,117 @@
++/* ==========================================================================
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#ifndef __DWC_OTG_DBG_H__
++#define __DWC_OTG_DBG_H__
++
++/** @file
++ * This file defines debug levels.
++ * Debugging support vanishes in non-debug builds.
++ */
++
++/**
++ * The Debug Level bit-mask variable.
++ */
++extern uint32_t g_dbg_lvl;
++/**
++ * Set the Debug Level variable.
++ */
++static inline uint32_t SET_DEBUG_LEVEL(const uint32_t new)
++{
++	uint32_t old = g_dbg_lvl;
++	g_dbg_lvl = new;
++	return old;
++}
++
++#define DBG_USER	(0x1)
++/** When debug level has the DBG_CIL bit set, display CIL Debug messages. */
++#define DBG_CIL		(0x2)
++/** When debug level has the DBG_CILV bit set, display CIL Verbose debug
++ * messages */
++#define DBG_CILV	(0x20)
++/**  When debug level has the DBG_PCD bit set, display PCD (Device) debug
++ *  messages */
++#define DBG_PCD		(0x4)
++/** When debug level has the DBG_PCDV set, display PCD (Device) Verbose debug
++ * messages */
++#define DBG_PCDV	(0x40)
++/** When debug level has the DBG_HCD bit set, display Host debug messages */
++#define DBG_HCD		(0x8)
++/** When debug level has the DBG_HCDV bit set, display Verbose Host debug
++ * messages */
++#define DBG_HCDV	(0x80)
++/** When debug level has the DBG_HCD_URB bit set, display enqueued URBs in host
++ *  mode. */
++#define DBG_HCD_URB	(0x800)
++/** When debug level has the DBG_HCDI bit set, display host interrupt
++ *  messages. */
++#define DBG_HCDI	(0x1000)
++
++/** When debug level has any bit set, display debug messages */
++#define DBG_ANY		(0xFF)
++
++/** All debug messages off */
++#define DBG_OFF		0
++
++/** Prefix string for DWC_DEBUG print macros. */
++#define USB_DWC "DWC_otg: "
++
++/**
++ * Print a debug message when the Global debug level variable contains
++ * the bit defined in <code>lvl</code>.
++ *
++ * @param[in] lvl - Debug level, use one of the DBG_ constants above.
++ * @param[in] x - like printf
++ *
++ *    Example:<p>
++ * <code>
++ *      DWC_DEBUGPL( DBG_ANY, "%s(%p)\n", __func__, _reg_base_addr);
++ * </code>
++ * <br>
++ * results in:<br>
++ * <code>
++ * usb-DWC_otg: dwc_otg_cil_init(ca867000)
++ * </code>
++ */
++#ifdef DEBUG
++
++# define DWC_DEBUGPL(lvl, x...) do{ if ((lvl)&g_dbg_lvl)__DWC_DEBUG(USB_DWC x ); }while(0)
++# define DWC_DEBUGP(x...)	DWC_DEBUGPL(DBG_ANY, x )
++
++# define CHK_DEBUG_LEVEL(level) ((level) & g_dbg_lvl)
++
++#else
++
++# define DWC_DEBUGPL(lvl, x...) do{}while(0)
++# define DWC_DEBUGP(x...)
++
++# define CHK_DEBUG_LEVEL(level) (0)
++
++#endif /*DEBUG*/
++#endif
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
+@@ -0,0 +1,1772 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.c $
++ * $Revision: #92 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++/** @file
++ * The dwc_otg_driver module provides the initialization and cleanup entry
++ * points for the DWC_otg driver. This module will be dynamically installed
++ * after Linux is booted using the insmod command. When the module is
++ * installed, the dwc_otg_driver_init function is called. When the module is
++ * removed (using rmmod), the dwc_otg_driver_cleanup function is called.
++ *
++ * This module also defines a data structure for the dwc_otg_driver, which is
++ * used in conjunction with the standard ARM lm_device structure. These
++ * structures allow the OTG driver to comply with the standard Linux driver
++ * model in which devices and drivers are registered with a bus driver. This
++ * has the benefit that Linux can expose attributes of the driver and device
++ * in its special sysfs file system. Users can then read or write files in
++ * this file system to perform diagnostics on the driver components or the
++ * device.
++ */
++
++#include "dwc_otg_os_dep.h"
++#include "dwc_os.h"
++#include "dwc_otg_dbg.h"
++#include "dwc_otg_driver.h"
++#include "dwc_otg_attr.h"
++#include "dwc_otg_core_if.h"
++#include "dwc_otg_pcd_if.h"
++#include "dwc_otg_hcd_if.h"
++#include "dwc_otg_fiq_fsm.h"
++
++#define DWC_DRIVER_VERSION	"3.00a 10-AUG-2012"
++#define DWC_DRIVER_DESC		"HS OTG USB Controller driver"
++
++bool microframe_schedule=true;
++
++static const char dwc_driver_name[] = "dwc_otg";
++
++
++extern int pcd_init(
++#ifdef LM_INTERFACE
++			   struct lm_device *_dev
++#elif  defined(PCI_INTERFACE)
++			   struct pci_dev *_dev
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *dev
++#endif
++    );
++extern int hcd_init(
++#ifdef LM_INTERFACE
++			   struct lm_device *_dev
++#elif  defined(PCI_INTERFACE)
++			   struct pci_dev *_dev
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *dev
++#endif
++    );
++
++extern int pcd_remove(
++#ifdef LM_INTERFACE
++			     struct lm_device *_dev
++#elif  defined(PCI_INTERFACE)
++			     struct pci_dev *_dev
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *_dev
++#endif
++    );
++
++extern void hcd_remove(
++#ifdef LM_INTERFACE
++			      struct lm_device *_dev
++#elif  defined(PCI_INTERFACE)
++			      struct pci_dev *_dev
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *_dev
++#endif
++    );
++
++extern void dwc_otg_adp_start(dwc_otg_core_if_t * core_if, uint8_t is_host);
++
++/*-------------------------------------------------------------------------*/
++/* Encapsulate the module parameter settings */
++
++struct dwc_otg_driver_module_params {
++	int32_t opt;
++	int32_t otg_cap;
++	int32_t dma_enable;
++	int32_t dma_desc_enable;
++	int32_t dma_burst_size;
++	int32_t speed;
++	int32_t host_support_fs_ls_low_power;
++	int32_t host_ls_low_power_phy_clk;
++	int32_t enable_dynamic_fifo;
++	int32_t data_fifo_size;
++	int32_t dev_rx_fifo_size;
++	int32_t dev_nperio_tx_fifo_size;
++	uint32_t dev_perio_tx_fifo_size[MAX_PERIO_FIFOS];
++	int32_t host_rx_fifo_size;
++	int32_t host_nperio_tx_fifo_size;
++	int32_t host_perio_tx_fifo_size;
++	int32_t max_transfer_size;
++	int32_t max_packet_count;
++	int32_t host_channels;
++	int32_t dev_endpoints;
++	int32_t phy_type;
++	int32_t phy_utmi_width;
++	int32_t phy_ulpi_ddr;
++	int32_t phy_ulpi_ext_vbus;
++	int32_t i2c_enable;
++	int32_t ulpi_fs_ls;
++	int32_t ts_dline;
++	int32_t en_multiple_tx_fifo;
++	uint32_t dev_tx_fifo_size[MAX_TX_FIFOS];
++	uint32_t thr_ctl;
++	uint32_t tx_thr_length;
++	uint32_t rx_thr_length;
++	int32_t pti_enable;
++	int32_t mpi_enable;
++	int32_t lpm_enable;
++	int32_t ic_usb_cap;
++	int32_t ahb_thr_ratio;
++	int32_t power_down;
++	int32_t reload_ctl;
++	int32_t dev_out_nak;
++	int32_t cont_on_bna;
++	int32_t ahb_single;
++	int32_t otg_ver;
++	int32_t adp_enable;
++};
++
++static struct dwc_otg_driver_module_params dwc_otg_module_params = {
++	.opt = -1,
++	.otg_cap = -1,
++	.dma_enable = -1,
++	.dma_desc_enable = -1,
++	.dma_burst_size = -1,
++	.speed = -1,
++	.host_support_fs_ls_low_power = -1,
++	.host_ls_low_power_phy_clk = -1,
++	.enable_dynamic_fifo = -1,
++	.data_fifo_size = -1,
++	.dev_rx_fifo_size = -1,
++	.dev_nperio_tx_fifo_size = -1,
++	.dev_perio_tx_fifo_size = {
++				   /* dev_perio_tx_fifo_size_1 */
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1,
++				   -1
++				   /* 15 */
++				   },
++	.host_rx_fifo_size = -1,
++	.host_nperio_tx_fifo_size = -1,
++	.host_perio_tx_fifo_size = -1,
++	.max_transfer_size = -1,
++	.max_packet_count = -1,
++	.host_channels = -1,
++	.dev_endpoints = -1,
++	.phy_type = -1,
++	.phy_utmi_width = -1,
++	.phy_ulpi_ddr = -1,
++	.phy_ulpi_ext_vbus = -1,
++	.i2c_enable = -1,
++	.ulpi_fs_ls = -1,
++	.ts_dline = -1,
++	.en_multiple_tx_fifo = -1,
++	.dev_tx_fifo_size = {
++			     /* dev_tx_fifo_size */
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1,
++			     -1
++			     /* 15 */
++			     },
++	.thr_ctl = -1,
++	.tx_thr_length = -1,
++	.rx_thr_length = -1,
++	.pti_enable = -1,
++	.mpi_enable = -1,
++	.lpm_enable = 0,
++	.ic_usb_cap = -1,
++	.ahb_thr_ratio = -1,
++	.power_down = -1,
++	.reload_ctl = -1,
++	.dev_out_nak = -1,
++	.cont_on_bna = -1,
++	.ahb_single = -1,
++	.otg_ver = -1,
++	.adp_enable = -1,
++};
++
++//Global variable to switch the fiq fix on or off
++bool fiq_enable = 1;
++// Global variable to enable the split transaction fix
++bool fiq_fsm_enable = true;
++//Bulk split-transaction NAK holdoff in microframes
++uint16_t nak_holdoff = 8;
++
++//Force host mode during CIL re-init
++bool cil_force_host = true;
++
++unsigned short fiq_fsm_mask = 0x0F;
++
++unsigned short int_ep_interval_min = 0;
++/**
++ * This function shows the Driver Version.
++ */
++static ssize_t version_show(struct device_driver *dev, char *buf)
++{
++	return snprintf(buf, sizeof(DWC_DRIVER_VERSION) + 2, "%s\n",
++			DWC_DRIVER_VERSION);
++}
++
++static DRIVER_ATTR_RO(version);
++
++/**
++ * Global Debug Level Mask.
++ */
++uint32_t g_dbg_lvl = 0;		/* OFF */
++
++/**
++ * This function shows the driver Debug Level.
++ */
++static ssize_t debuglevel_show(struct device_driver *drv, char *buf)
++{
++	return sprintf(buf, "0x%0x\n", g_dbg_lvl);
++}
++
++/**
++ * This function stores the driver Debug Level.
++ */
++static ssize_t debuglevel_store(struct device_driver *drv, const char *buf,
++			       size_t count)
++{
++	g_dbg_lvl = simple_strtoul(buf, NULL, 16);
++	return count;
++}
++
++static DRIVER_ATTR_RW(debuglevel);
++
++/**
++ * This function is called during module intialization
++ * to pass module parameters to the DWC_OTG CORE.
++ */
++static int set_parameters(dwc_otg_core_if_t * core_if)
++{
++	int retval = 0;
++	int i;
++
++	if (dwc_otg_module_params.otg_cap != -1) {
++		retval +=
++		    dwc_otg_set_param_otg_cap(core_if,
++					      dwc_otg_module_params.otg_cap);
++	}
++	if (dwc_otg_module_params.dma_enable != -1) {
++		retval +=
++		    dwc_otg_set_param_dma_enable(core_if,
++						 dwc_otg_module_params.
++						 dma_enable);
++	}
++	if (dwc_otg_module_params.dma_desc_enable != -1) {
++		retval +=
++		    dwc_otg_set_param_dma_desc_enable(core_if,
++						      dwc_otg_module_params.
++						      dma_desc_enable);
++	}
++	if (dwc_otg_module_params.opt != -1) {
++		retval +=
++		    dwc_otg_set_param_opt(core_if, dwc_otg_module_params.opt);
++	}
++	if (dwc_otg_module_params.dma_burst_size != -1) {
++		retval +=
++		    dwc_otg_set_param_dma_burst_size(core_if,
++						     dwc_otg_module_params.
++						     dma_burst_size);
++	}
++	if (dwc_otg_module_params.host_support_fs_ls_low_power != -1) {
++		retval +=
++		    dwc_otg_set_param_host_support_fs_ls_low_power(core_if,
++								   dwc_otg_module_params.
++								   host_support_fs_ls_low_power);
++	}
++	if (dwc_otg_module_params.enable_dynamic_fifo != -1) {
++		retval +=
++		    dwc_otg_set_param_enable_dynamic_fifo(core_if,
++							  dwc_otg_module_params.
++							  enable_dynamic_fifo);
++	}
++	if (dwc_otg_module_params.data_fifo_size != -1) {
++		retval +=
++		    dwc_otg_set_param_data_fifo_size(core_if,
++						     dwc_otg_module_params.
++						     data_fifo_size);
++	}
++	if (dwc_otg_module_params.dev_rx_fifo_size != -1) {
++		retval +=
++		    dwc_otg_set_param_dev_rx_fifo_size(core_if,
++						       dwc_otg_module_params.
++						       dev_rx_fifo_size);
++	}
++	if (dwc_otg_module_params.dev_nperio_tx_fifo_size != -1) {
++		retval +=
++		    dwc_otg_set_param_dev_nperio_tx_fifo_size(core_if,
++							      dwc_otg_module_params.
++							      dev_nperio_tx_fifo_size);
++	}
++	if (dwc_otg_module_params.host_rx_fifo_size != -1) {
++		retval +=
++		    dwc_otg_set_param_host_rx_fifo_size(core_if,
++							dwc_otg_module_params.host_rx_fifo_size);
++	}
++	if (dwc_otg_module_params.host_nperio_tx_fifo_size != -1) {
++		retval +=
++		    dwc_otg_set_param_host_nperio_tx_fifo_size(core_if,
++							       dwc_otg_module_params.
++							       host_nperio_tx_fifo_size);
++	}
++	if (dwc_otg_module_params.host_perio_tx_fifo_size != -1) {
++		retval +=
++		    dwc_otg_set_param_host_perio_tx_fifo_size(core_if,
++							      dwc_otg_module_params.
++							      host_perio_tx_fifo_size);
++	}
++	if (dwc_otg_module_params.max_transfer_size != -1) {
++		retval +=
++		    dwc_otg_set_param_max_transfer_size(core_if,
++							dwc_otg_module_params.
++							max_transfer_size);
++	}
++	if (dwc_otg_module_params.max_packet_count != -1) {
++		retval +=
++		    dwc_otg_set_param_max_packet_count(core_if,
++						       dwc_otg_module_params.
++						       max_packet_count);
++	}
++	if (dwc_otg_module_params.host_channels != -1) {
++		retval +=
++		    dwc_otg_set_param_host_channels(core_if,
++						    dwc_otg_module_params.
++						    host_channels);
++	}
++	if (dwc_otg_module_params.dev_endpoints != -1) {
++		retval +=
++		    dwc_otg_set_param_dev_endpoints(core_if,
++						    dwc_otg_module_params.
++						    dev_endpoints);
++	}
++	if (dwc_otg_module_params.phy_type != -1) {
++		retval +=
++		    dwc_otg_set_param_phy_type(core_if,
++					       dwc_otg_module_params.phy_type);
++	}
++	if (dwc_otg_module_params.speed != -1) {
++		retval +=
++		    dwc_otg_set_param_speed(core_if,
++					    dwc_otg_module_params.speed);
++	}
++	if (dwc_otg_module_params.host_ls_low_power_phy_clk != -1) {
++		retval +=
++		    dwc_otg_set_param_host_ls_low_power_phy_clk(core_if,
++								dwc_otg_module_params.
++								host_ls_low_power_phy_clk);
++	}
++	if (dwc_otg_module_params.phy_ulpi_ddr != -1) {
++		retval +=
++		    dwc_otg_set_param_phy_ulpi_ddr(core_if,
++						   dwc_otg_module_params.
++						   phy_ulpi_ddr);
++	}
++	if (dwc_otg_module_params.phy_ulpi_ext_vbus != -1) {
++		retval +=
++		    dwc_otg_set_param_phy_ulpi_ext_vbus(core_if,
++							dwc_otg_module_params.
++							phy_ulpi_ext_vbus);
++	}
++	if (dwc_otg_module_params.phy_utmi_width != -1) {
++		retval +=
++		    dwc_otg_set_param_phy_utmi_width(core_if,
++						     dwc_otg_module_params.
++						     phy_utmi_width);
++	}
++	if (dwc_otg_module_params.ulpi_fs_ls != -1) {
++		retval +=
++		    dwc_otg_set_param_ulpi_fs_ls(core_if,
++						 dwc_otg_module_params.ulpi_fs_ls);
++	}
++	if (dwc_otg_module_params.ts_dline != -1) {
++		retval +=
++		    dwc_otg_set_param_ts_dline(core_if,
++					       dwc_otg_module_params.ts_dline);
++	}
++	if (dwc_otg_module_params.i2c_enable != -1) {
++		retval +=
++		    dwc_otg_set_param_i2c_enable(core_if,
++						 dwc_otg_module_params.
++						 i2c_enable);
++	}
++	if (dwc_otg_module_params.en_multiple_tx_fifo != -1) {
++		retval +=
++		    dwc_otg_set_param_en_multiple_tx_fifo(core_if,
++							  dwc_otg_module_params.
++							  en_multiple_tx_fifo);
++	}
++	for (i = 0; i < 15; i++) {
++		if (dwc_otg_module_params.dev_perio_tx_fifo_size[i] != -1) {
++			retval +=
++			    dwc_otg_set_param_dev_perio_tx_fifo_size(core_if,
++								     dwc_otg_module_params.
++								     dev_perio_tx_fifo_size
++								     [i], i);
++		}
++	}
++
++	for (i = 0; i < 15; i++) {
++		if (dwc_otg_module_params.dev_tx_fifo_size[i] != -1) {
++			retval += dwc_otg_set_param_dev_tx_fifo_size(core_if,
++								     dwc_otg_module_params.
++								     dev_tx_fifo_size
++								     [i], i);
++		}
++	}
++	if (dwc_otg_module_params.thr_ctl != -1) {
++		retval +=
++		    dwc_otg_set_param_thr_ctl(core_if,
++					      dwc_otg_module_params.thr_ctl);
++	}
++	if (dwc_otg_module_params.mpi_enable != -1) {
++		retval +=
++		    dwc_otg_set_param_mpi_enable(core_if,
++						 dwc_otg_module_params.
++						 mpi_enable);
++	}
++	if (dwc_otg_module_params.pti_enable != -1) {
++		retval +=
++		    dwc_otg_set_param_pti_enable(core_if,
++						 dwc_otg_module_params.
++						 pti_enable);
++	}
++	if (dwc_otg_module_params.lpm_enable != -1) {
++		retval +=
++		    dwc_otg_set_param_lpm_enable(core_if,
++						 dwc_otg_module_params.
++						 lpm_enable);
++	}
++	if (dwc_otg_module_params.ic_usb_cap != -1) {
++		retval +=
++		    dwc_otg_set_param_ic_usb_cap(core_if,
++						 dwc_otg_module_params.
++						 ic_usb_cap);
++	}
++	if (dwc_otg_module_params.tx_thr_length != -1) {
++		retval +=
++		    dwc_otg_set_param_tx_thr_length(core_if,
++						    dwc_otg_module_params.tx_thr_length);
++	}
++	if (dwc_otg_module_params.rx_thr_length != -1) {
++		retval +=
++		    dwc_otg_set_param_rx_thr_length(core_if,
++						    dwc_otg_module_params.
++						    rx_thr_length);
++	}
++	if (dwc_otg_module_params.ahb_thr_ratio != -1) {
++		retval +=
++		    dwc_otg_set_param_ahb_thr_ratio(core_if,
++						    dwc_otg_module_params.ahb_thr_ratio);
++	}
++	if (dwc_otg_module_params.power_down != -1) {
++		retval +=
++		    dwc_otg_set_param_power_down(core_if,
++						 dwc_otg_module_params.power_down);
++	}
++	if (dwc_otg_module_params.reload_ctl != -1) {
++		retval +=
++		    dwc_otg_set_param_reload_ctl(core_if,
++						 dwc_otg_module_params.reload_ctl);
++	}
++
++	if (dwc_otg_module_params.dev_out_nak != -1) {
++		retval +=
++			dwc_otg_set_param_dev_out_nak(core_if,
++			dwc_otg_module_params.dev_out_nak);
++	}
++
++	if (dwc_otg_module_params.cont_on_bna != -1) {
++		retval +=
++			dwc_otg_set_param_cont_on_bna(core_if,
++			dwc_otg_module_params.cont_on_bna);
++	}
++
++	if (dwc_otg_module_params.ahb_single != -1) {
++		retval +=
++			dwc_otg_set_param_ahb_single(core_if,
++			dwc_otg_module_params.ahb_single);
++	}
++
++	if (dwc_otg_module_params.otg_ver != -1) {
++		retval +=
++		    dwc_otg_set_param_otg_ver(core_if,
++					      dwc_otg_module_params.otg_ver);
++	}
++	if (dwc_otg_module_params.adp_enable != -1) {
++		retval +=
++		    dwc_otg_set_param_adp_enable(core_if,
++						 dwc_otg_module_params.
++						 adp_enable);
++	}
++	return retval;
++}
++
++/**
++ * This function is the top level interrupt handler for the Common
++ * (Device and host modes) interrupts.
++ */
++static irqreturn_t dwc_otg_common_irq(int irq, void *dev)
++{
++	int32_t retval = IRQ_NONE;
++
++	retval = dwc_otg_handle_common_intr(dev);
++	if (retval != 0) {
++		S3C2410X_CLEAR_EINTPEND();
++	}
++	return IRQ_RETVAL(retval);
++}
++
++/**
++ * This function is called when a lm_device is unregistered with the
++ * dwc_otg_driver. This happens, for example, when the rmmod command is
++ * executed. The device may or may not be electrically present. If it is
++ * present, the driver stops device processing. Any resources used on behalf
++ * of this device are freed.
++ *
++ * @param _dev
++ */
++#ifdef LM_INTERFACE
++#define REM_RETVAL(n)
++static void dwc_otg_driver_remove(	 struct lm_device *_dev )
++{       dwc_otg_device_t *otg_dev = lm_get_drvdata(_dev);
++#elif  defined(PCI_INTERFACE)
++#define REM_RETVAL(n)
++static void dwc_otg_driver_remove(	 struct pci_dev *_dev )
++{	dwc_otg_device_t *otg_dev = pci_get_drvdata(_dev);
++#elif  defined(PLATFORM_INTERFACE)
++#define REM_RETVAL(n) n
++static int dwc_otg_driver_remove(        struct platform_device *_dev )
++{       dwc_otg_device_t *otg_dev = platform_get_drvdata(_dev);
++#endif
++
++	DWC_DEBUGPL(DBG_ANY, "%s(%p) otg_dev %p\n", __func__, _dev, otg_dev);
++
++	if (!otg_dev) {
++		/* Memory allocation for the dwc_otg_device failed. */
++		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
++                return REM_RETVAL(-ENOMEM);
++	}
++#ifndef DWC_DEVICE_ONLY
++	if (otg_dev->hcd) {
++		hcd_remove(_dev);
++	} else {
++		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
++                return REM_RETVAL(-EINVAL);
++	}
++#endif
++
++#ifndef DWC_HOST_ONLY
++	if (otg_dev->pcd) {
++		pcd_remove(_dev);
++	} else {
++		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->pcd NULL!\n", __func__);
++                return REM_RETVAL(-EINVAL);
++	}
++#endif
++	/*
++	 * Free the IRQ
++	 */
++	if (otg_dev->common_irq_installed) {
++		free_irq(otg_dev->os_dep.irq_num, otg_dev);
++        } else {
++		DWC_DEBUGPL(DBG_ANY, "%s: There is no installed irq!\n", __func__);
++		return REM_RETVAL(-ENXIO);
++	}
++
++	if (otg_dev->core_if) {
++		dwc_otg_cil_remove(otg_dev->core_if);
++	} else {
++		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->core_if NULL!\n", __func__);
++		return REM_RETVAL(-ENXIO);
++	}
++
++	/*
++	 * Remove the device attributes
++	 */
++	dwc_otg_attr_remove(_dev);
++
++	/*
++	 * Return the memory.
++	 */
++	if (otg_dev->os_dep.base) {
++		iounmap(otg_dev->os_dep.base);
++	}
++	DWC_FREE(otg_dev);
++
++	/*
++	 * Clear the drvdata pointer.
++	 */
++#ifdef LM_INTERFACE
++	lm_set_drvdata(_dev, 0);
++#elif defined(PCI_INTERFACE)
++        release_mem_region(otg_dev->os_dep.rsrc_start,
++                           otg_dev->os_dep.rsrc_len);
++	pci_set_drvdata(_dev, 0);
++#elif  defined(PLATFORM_INTERFACE)
++        platform_set_drvdata(_dev, 0);
++#endif
++        return REM_RETVAL(0);
++}
++
++/**
++ * This function is called when an lm_device is bound to a
++ * dwc_otg_driver. It creates the driver components required to
++ * control the device (CIL, HCD, and PCD) and it initializes the
++ * device. The driver components are stored in a dwc_otg_device
++ * structure. A reference to the dwc_otg_device is saved in the
++ * lm_device. This allows the driver to access the dwc_otg_device
++ * structure on subsequent calls to driver methods for this device.
++ *
++ * @param _dev Bus device
++ */
++static int dwc_otg_driver_probe(
++#ifdef LM_INTERFACE
++				       struct lm_device *_dev
++#elif defined(PCI_INTERFACE)
++				       struct pci_dev *_dev,
++				       const struct pci_device_id *id
++#elif  defined(PLATFORM_INTERFACE)
++                                       struct platform_device *_dev
++#endif
++    )
++{
++	int retval = 0;
++	dwc_otg_device_t *dwc_otg_device;
++        int devirq;
++
++	dev_dbg(&_dev->dev, "dwc_otg_driver_probe(%p)\n", _dev);
++#ifdef LM_INTERFACE
++	dev_dbg(&_dev->dev, "start=0x%08x\n", (unsigned)_dev->resource.start);
++#elif defined(PCI_INTERFACE)
++	if (!id) {
++		DWC_ERROR("Invalid pci_device_id %p", id);
++		return -EINVAL;
++	}
++
++	if (!_dev || (pci_enable_device(_dev) < 0)) {
++		DWC_ERROR("Invalid pci_device %p", _dev);
++		return -ENODEV;
++	}
++	dev_dbg(&_dev->dev, "start=0x%08x\n", (unsigned)pci_resource_start(_dev,0));
++	/* other stuff needed as well? */
++
++#elif  defined(PLATFORM_INTERFACE)
++	dev_dbg(&_dev->dev, "start=0x%08x (len 0x%x)\n",
++                (unsigned)_dev->resource->start,
++                (unsigned)(_dev->resource->end - _dev->resource->start));
++#endif
++
++	dwc_otg_device = DWC_ALLOC(sizeof(dwc_otg_device_t));
++
++	if (!dwc_otg_device) {
++		dev_err(&_dev->dev, "kmalloc of dwc_otg_device failed\n");
++		return -ENOMEM;
++	}
++
++	memset(dwc_otg_device, 0, sizeof(*dwc_otg_device));
++	dwc_otg_device->os_dep.reg_offset = 0xFFFFFFFF;
++	dwc_otg_device->os_dep.platformdev = _dev;
++
++	/*
++	 * Map the DWC_otg Core memory into virtual address space.
++	 */
++#ifdef LM_INTERFACE
++	dwc_otg_device->os_dep.base = ioremap(_dev->resource.start, SZ_256K);
++
++	if (!dwc_otg_device->os_dep.base) {
++		dev_err(&_dev->dev, "ioremap() failed\n");
++		DWC_FREE(dwc_otg_device);
++		return -ENOMEM;
++	}
++	dev_dbg(&_dev->dev, "base=0x%08x\n",
++		(unsigned)dwc_otg_device->os_dep.base);
++#elif defined(PCI_INTERFACE)
++	_dev->current_state = PCI_D0;
++	_dev->dev.power.power_state = PMSG_ON;
++
++	if (!_dev->irq) {
++		DWC_ERROR("Found HC with no IRQ. Check BIOS/PCI %s setup!",
++			  pci_name(_dev));
++		iounmap(dwc_otg_device->os_dep.base);
++		DWC_FREE(dwc_otg_device);
++		return -ENODEV;
++	}
++
++	dwc_otg_device->os_dep.rsrc_start = pci_resource_start(_dev, 0);
++	dwc_otg_device->os_dep.rsrc_len = pci_resource_len(_dev, 0);
++	DWC_DEBUGPL(DBG_ANY, "PCI resource: start=%08x, len=%08x\n",
++		    (unsigned)dwc_otg_device->os_dep.rsrc_start,
++		    (unsigned)dwc_otg_device->os_dep.rsrc_len);
++	if (!request_mem_region
++	    (dwc_otg_device->os_dep.rsrc_start, dwc_otg_device->os_dep.rsrc_len,
++	     "dwc_otg")) {
++		dev_dbg(&_dev->dev, "error requesting memory\n");
++		iounmap(dwc_otg_device->os_dep.base);
++		DWC_FREE(dwc_otg_device);
++		return -EFAULT;
++	}
++
++	dwc_otg_device->os_dep.base =
++	    ioremap(dwc_otg_device->os_dep.rsrc_start,
++			    dwc_otg_device->os_dep.rsrc_len);
++	if (dwc_otg_device->os_dep.base == NULL) {
++		dev_dbg(&_dev->dev, "error mapping memory\n");
++		release_mem_region(dwc_otg_device->os_dep.rsrc_start,
++				   dwc_otg_device->os_dep.rsrc_len);
++		iounmap(dwc_otg_device->os_dep.base);
++		DWC_FREE(dwc_otg_device);
++		return -EFAULT;
++	}
++	dev_dbg(&_dev->dev, "base=0x%p (before adjust) \n",
++		dwc_otg_device->os_dep.base);
++	dwc_otg_device->os_dep.base = (char *)dwc_otg_device->os_dep.base;
++	dev_dbg(&_dev->dev, "base=0x%p (after adjust) \n",
++		dwc_otg_device->os_dep.base);
++	dev_dbg(&_dev->dev, "%s: mapped PA 0x%x to VA 0x%p\n", __func__,
++		(unsigned)dwc_otg_device->os_dep.rsrc_start,
++		dwc_otg_device->os_dep.base);
++
++	pci_set_master(_dev);
++	pci_set_drvdata(_dev, dwc_otg_device);
++#elif defined(PLATFORM_INTERFACE)
++        DWC_DEBUGPL(DBG_ANY,"Platform resource: start=%08x, len=%08x\n",
++                    _dev->resource->start,
++                    _dev->resource->end - _dev->resource->start + 1);
++#if 1
++        if (!request_mem_region(_dev->resource[0].start,
++                                _dev->resource[0].end - _dev->resource[0].start + 1,
++                                "dwc_otg")) {
++          dev_dbg(&_dev->dev, "error reserving mapped memory\n");
++          retval = -EFAULT;
++          goto fail;
++        }
++
++	dwc_otg_device->os_dep.base = ioremap(_dev->resource[0].start,
++                                                      _dev->resource[0].end -
++                                                      _dev->resource[0].start+1);
++	if (fiq_enable)
++	{
++		if (!request_mem_region(_dev->resource[1].start,
++	                                _dev->resource[1].end - _dev->resource[1].start + 1,
++	                                "dwc_otg")) {
++			dev_dbg(&_dev->dev, "error reserving mapped memory\n");
++			retval = -EFAULT;
++			goto fail;
++		}
++
++		dwc_otg_device->os_dep.mphi_base = ioremap(_dev->resource[1].start,
++							    _dev->resource[1].end -
++							    _dev->resource[1].start + 1);
++		dwc_otg_device->os_dep.use_swirq = (_dev->resource[1].end - _dev->resource[1].start) == 0x200;
++	}
++
++#else
++        {
++                struct map_desc desc = {
++                    .virtual = IO_ADDRESS((unsigned)_dev->resource->start),
++                    .pfn     = __phys_to_pfn((unsigned)_dev->resource->start),
++                    .length  = SZ_128K,
++                    .type    = MT_DEVICE
++                };
++                iotable_init(&desc, 1);
++                dwc_otg_device->os_dep.base = (void *)desc.virtual;
++        }
++#endif
++	if (!dwc_otg_device->os_dep.base) {
++		dev_err(&_dev->dev, "ioremap() failed\n");
++		retval = -ENOMEM;
++		goto fail;
++	}
++#endif
++
++	/*
++	 * Initialize driver data to point to the global DWC_otg
++	 * Device structure.
++	 */
++#ifdef LM_INTERFACE
++	lm_set_drvdata(_dev, dwc_otg_device);
++#elif defined(PLATFORM_INTERFACE)
++	platform_set_drvdata(_dev, dwc_otg_device);
++#endif
++	dev_dbg(&_dev->dev, "dwc_otg_device=0x%p\n", dwc_otg_device);
++
++	dwc_otg_device->core_if = dwc_otg_cil_init(dwc_otg_device->os_dep.base);
++        DWC_DEBUGPL(DBG_HCDV, "probe of device %p given core_if %p\n",
++                    dwc_otg_device, dwc_otg_device->core_if);//GRAYG
++
++	if (!dwc_otg_device->core_if) {
++		dev_err(&_dev->dev, "CIL initialization failed!\n");
++		retval = -ENOMEM;
++		goto fail;
++	}
++
++	dev_dbg(&_dev->dev, "Calling get_gsnpsid\n");
++	/*
++	 * Attempt to ensure this device is really a DWC_otg Controller.
++	 * Read and verify the SNPSID register contents. The value should be
++	 * 0x45F42XXX or 0x45F42XXX, which corresponds to either "OT2" or "OTG3",
++	 * as in "OTG version 2.XX" or "OTG version 3.XX".
++	 */
++
++	if (((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) !=	0x4F542000) &&
++		((dwc_otg_get_gsnpsid(dwc_otg_device->core_if) & 0xFFFFF000) != 0x4F543000)) {
++		dev_err(&_dev->dev, "Bad value for SNPSID: 0x%08x\n",
++			dwc_otg_get_gsnpsid(dwc_otg_device->core_if));
++		retval = -EINVAL;
++		goto fail;
++	}
++
++	/*
++	 * Validate parameter values.
++	 */
++	dev_dbg(&_dev->dev, "Calling set_parameters\n");
++	if (set_parameters(dwc_otg_device->core_if)) {
++		retval = -EINVAL;
++		goto fail;
++	}
++
++	/*
++	 * Create Device Attributes in sysfs
++	 */
++	dev_dbg(&_dev->dev, "Calling attr_create\n");
++	dwc_otg_attr_create(_dev);
++
++	/*
++	 * Disable the global interrupt until all the interrupt
++	 * handlers are installed.
++	 */
++	dev_dbg(&_dev->dev, "Calling disable_global_interrupts\n");
++	dwc_otg_disable_global_interrupts(dwc_otg_device->core_if);
++
++	/*
++	 * Install the interrupt handler for the common interrupts before
++	 * enabling common interrupts in core_init below.
++	 */
++
++#if defined(PLATFORM_INTERFACE)
++	devirq = platform_get_irq_byname(_dev, fiq_enable ? "soft" : "usb");
++	if (devirq < 0)
++	    devirq = platform_get_irq(_dev, fiq_enable ? 0 : 1);
++#else
++	devirq = _dev->irq;
++#endif
++	DWC_DEBUGPL(DBG_CIL, "registering (common) handler for irq%d\n",
++		    devirq);
++	dev_dbg(&_dev->dev, "Calling request_irq(%d)\n", devirq);
++	retval = request_irq(devirq, dwc_otg_common_irq,
++                             IRQF_SHARED,
++                             "dwc_otg", dwc_otg_device);
++	if (retval) {
++		DWC_ERROR("request of irq%d failed\n", devirq);
++		retval = -EBUSY;
++		goto fail;
++	} else {
++		dwc_otg_device->common_irq_installed = 1;
++	}
++	dwc_otg_device->os_dep.irq_num = devirq;
++	dwc_otg_device->os_dep.fiq_num = -EINVAL;
++	if (fiq_enable) {
++		int devfiq = platform_get_irq_byname(_dev, "usb");
++		if (devfiq < 0)
++			devfiq = platform_get_irq(_dev, 1);
++		dwc_otg_device->os_dep.fiq_num = devfiq;
++	}
++
++#ifndef IRQF_TRIGGER_LOW
++#if defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
++	dev_dbg(&_dev->dev, "Calling set_irq_type\n");
++	set_irq_type(devirq,
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30))
++                     IRQT_LOW
++#else
++                     IRQ_TYPE_LEVEL_LOW
++#endif
++                    );
++#endif
++#endif /*IRQF_TRIGGER_LOW*/
++
++	/*
++	 * Initialize the DWC_otg core.
++	 */
++	dev_dbg(&_dev->dev, "Calling dwc_otg_core_init\n");
++	dwc_otg_core_init(dwc_otg_device->core_if);
++
++#ifndef DWC_HOST_ONLY
++	/*
++	 * Initialize the PCD
++	 */
++	dev_dbg(&_dev->dev, "Calling pcd_init\n");
++	retval = pcd_init(_dev);
++	if (retval != 0) {
++		DWC_ERROR("pcd_init failed\n");
++		dwc_otg_device->pcd = NULL;
++		goto fail;
++	}
++#endif
++#ifndef DWC_DEVICE_ONLY
++	/*
++	 * Initialize the HCD
++	 */
++	dev_dbg(&_dev->dev, "Calling hcd_init\n");
++	retval = hcd_init(_dev);
++	if (retval != 0) {
++		DWC_ERROR("hcd_init failed\n");
++		dwc_otg_device->hcd = NULL;
++		goto fail;
++	}
++#endif
++        /* Recover from drvdata having been overwritten by hcd_init() */
++#ifdef LM_INTERFACE
++	lm_set_drvdata(_dev, dwc_otg_device);
++#elif defined(PLATFORM_INTERFACE)
++	platform_set_drvdata(_dev, dwc_otg_device);
++#elif defined(PCI_INTERFACE)
++	pci_set_drvdata(_dev, dwc_otg_device);
++	dwc_otg_device->os_dep.pcidev = _dev;
++#endif
++
++	/*
++	 * Enable the global interrupt after all the interrupt
++	 * handlers are installed if there is no ADP support else
++	 * perform initial actions required for Internal ADP logic.
++	 */
++	if (!dwc_otg_get_param_adp_enable(dwc_otg_device->core_if)) {
++	        dev_dbg(&_dev->dev, "Calling enable_global_interrupts\n");
++		dwc_otg_enable_global_interrupts(dwc_otg_device->core_if);
++	        dev_dbg(&_dev->dev, "Done\n");
++	} else
++		dwc_otg_adp_start(dwc_otg_device->core_if,
++							dwc_otg_is_host_mode(dwc_otg_device->core_if));
++
++	return 0;
++
++fail:
++	dwc_otg_driver_remove(_dev);
++	return retval;
++}
++
++/**
++ * This structure defines the methods to be called by a bus driver
++ * during the lifecycle of a device on that bus. Both drivers and
++ * devices are registered with a bus driver. The bus driver matches
++ * devices to drivers based on information in the device and driver
++ * structures.
++ *
++ * The probe function is called when the bus driver matches a device
++ * to this driver. The remove function is called when a device is
++ * unregistered with the bus driver.
++ */
++#ifdef LM_INTERFACE
++static struct lm_driver dwc_otg_driver = {
++	.drv = {.name = (char *)dwc_driver_name,},
++	.probe = dwc_otg_driver_probe,
++	.remove = dwc_otg_driver_remove,
++        // 'suspend' and 'resume' absent
++};
++#elif defined(PCI_INTERFACE)
++static const struct pci_device_id pci_ids[] = { {
++						 PCI_DEVICE(0x16c3, 0xabcd),
++						 .driver_data =
++						 (unsigned long)0xdeadbeef,
++						 }, { /* end: all zeroes */ }
++};
++
++MODULE_DEVICE_TABLE(pci, pci_ids);
++
++/* pci driver glue; this is a "new style" PCI driver module */
++static struct pci_driver dwc_otg_driver = {
++	.name = "dwc_otg",
++	.id_table = pci_ids,
++
++	.probe = dwc_otg_driver_probe,
++	.remove = dwc_otg_driver_remove,
++
++	.driver = {
++		   .name = (char *)dwc_driver_name,
++		   },
++};
++#elif defined(PLATFORM_INTERFACE)
++static struct platform_device_id platform_ids[] = {
++        {
++              .name = "bcm2708_usb",
++              .driver_data = (kernel_ulong_t) 0xdeadbeef,
++        },
++        { /* end: all zeroes */ }
++};
++MODULE_DEVICE_TABLE(platform, platform_ids);
++
++static const struct of_device_id dwc_otg_of_match_table[] = {
++	{ .compatible = "brcm,bcm2708-usb", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, dwc_otg_of_match_table);
++
++static struct platform_driver dwc_otg_driver = {
++	.driver = {
++		.name = (char *)dwc_driver_name,
++		.of_match_table = dwc_otg_of_match_table,
++		},
++        .id_table = platform_ids,
++
++	.probe = dwc_otg_driver_probe,
++	.remove = dwc_otg_driver_remove,
++        // no 'shutdown', 'suspend', 'resume', 'suspend_late' or 'resume_early'
++};
++#endif
++
++/**
++ * This function is called when the dwc_otg_driver is installed with the
++ * insmod command. It registers the dwc_otg_driver structure with the
++ * appropriate bus driver. This will cause the dwc_otg_driver_probe function
++ * to be called. In addition, the bus driver will automatically expose
++ * attributes defined for the device and driver in the special sysfs file
++ * system.
++ *
++ * @return
++ */
++static int __init dwc_otg_driver_init(void)
++{
++	int retval = 0;
++	int error;
++        struct device_driver *drv;
++
++	if(fiq_fsm_enable && !fiq_enable) {
++		printk(KERN_WARNING "dwc_otg: fiq_fsm_enable was set without fiq_enable! Correcting.\n");
++		fiq_enable = 1;
++	}
++
++	printk(KERN_INFO "%s: version %s (%s bus)\n", dwc_driver_name,
++	       DWC_DRIVER_VERSION,
++#ifdef LM_INTERFACE
++               "logicmodule");
++	retval = lm_driver_register(&dwc_otg_driver);
++        drv = &dwc_otg_driver.drv;
++#elif defined(PCI_INTERFACE)
++               "pci");
++	retval = pci_register_driver(&dwc_otg_driver);
++        drv = &dwc_otg_driver.driver;
++#elif defined(PLATFORM_INTERFACE)
++               "platform");
++	retval = platform_driver_register(&dwc_otg_driver);
++        drv = &dwc_otg_driver.driver;
++#endif
++	if (retval < 0) {
++		printk(KERN_ERR "%s retval=%d\n", __func__, retval);
++		return retval;
++	}
++	printk(KERN_DEBUG "dwc_otg: FIQ %s\n", fiq_enable ? "enabled":"disabled");
++	printk(KERN_DEBUG "dwc_otg: NAK holdoff %s\n", nak_holdoff ? "enabled":"disabled");
++	printk(KERN_DEBUG "dwc_otg: FIQ split-transaction FSM %s\n", fiq_fsm_enable ? "enabled":"disabled");
++
++	error = driver_create_file(drv, &driver_attr_version);
++#ifdef DEBUG
++	error = driver_create_file(drv, &driver_attr_debuglevel);
++#endif
++	return retval;
++}
++
++module_init(dwc_otg_driver_init);
++
++/**
++ * This function is called when the driver is removed from the kernel
++ * with the rmmod command. The driver unregisters itself with its bus
++ * driver.
++ *
++ */
++static void __exit dwc_otg_driver_cleanup(void)
++{
++	printk(KERN_DEBUG "dwc_otg_driver_cleanup()\n");
++
++#ifdef LM_INTERFACE
++	driver_remove_file(&dwc_otg_driver.drv, &driver_attr_debuglevel);
++	driver_remove_file(&dwc_otg_driver.drv, &driver_attr_version);
++	lm_driver_unregister(&dwc_otg_driver);
++#elif defined(PCI_INTERFACE)
++	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
++	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
++	pci_unregister_driver(&dwc_otg_driver);
++#elif defined(PLATFORM_INTERFACE)
++	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_debuglevel);
++	driver_remove_file(&dwc_otg_driver.driver, &driver_attr_version);
++	platform_driver_unregister(&dwc_otg_driver);
++#endif
++
++	printk(KERN_INFO "%s module removed\n", dwc_driver_name);
++}
++
++module_exit(dwc_otg_driver_cleanup);
++
++MODULE_DESCRIPTION(DWC_DRIVER_DESC);
++MODULE_AUTHOR("Synopsys Inc.");
++MODULE_LICENSE("GPL");
++
++module_param_named(otg_cap, dwc_otg_module_params.otg_cap, int, 0444);
++MODULE_PARM_DESC(otg_cap, "OTG Capabilities 0=HNP&SRP 1=SRP Only 2=None");
++module_param_named(opt, dwc_otg_module_params.opt, int, 0444);
++MODULE_PARM_DESC(opt, "OPT Mode");
++module_param_named(dma_enable, dwc_otg_module_params.dma_enable, int, 0444);
++MODULE_PARM_DESC(dma_enable, "DMA Mode 0=Slave 1=DMA enabled");
++
++module_param_named(dma_desc_enable, dwc_otg_module_params.dma_desc_enable, int,
++		   0444);
++MODULE_PARM_DESC(dma_desc_enable,
++		 "DMA Desc Mode 0=Address DMA 1=DMA Descriptor enabled");
++
++module_param_named(dma_burst_size, dwc_otg_module_params.dma_burst_size, int,
++		   0444);
++MODULE_PARM_DESC(dma_burst_size,
++		 "DMA Burst Size 1, 4, 8, 16, 32, 64, 128, 256");
++module_param_named(speed, dwc_otg_module_params.speed, int, 0444);
++MODULE_PARM_DESC(speed, "Speed 0=High Speed 1=Full Speed");
++module_param_named(host_support_fs_ls_low_power,
++		   dwc_otg_module_params.host_support_fs_ls_low_power, int,
++		   0444);
++MODULE_PARM_DESC(host_support_fs_ls_low_power,
++		 "Support Low Power w/FS or LS 0=Support 1=Don't Support");
++module_param_named(host_ls_low_power_phy_clk,
++		   dwc_otg_module_params.host_ls_low_power_phy_clk, int, 0444);
++MODULE_PARM_DESC(host_ls_low_power_phy_clk,
++		 "Low Speed Low Power Clock 0=48Mhz 1=6Mhz");
++module_param_named(enable_dynamic_fifo,
++		   dwc_otg_module_params.enable_dynamic_fifo, int, 0444);
++MODULE_PARM_DESC(enable_dynamic_fifo, "0=cC Setting 1=Allow Dynamic Sizing");
++module_param_named(data_fifo_size, dwc_otg_module_params.data_fifo_size, int,
++		   0444);
++MODULE_PARM_DESC(data_fifo_size,
++		 "Total number of words in the data FIFO memory 32-32768");
++module_param_named(dev_rx_fifo_size, dwc_otg_module_params.dev_rx_fifo_size,
++		   int, 0444);
++MODULE_PARM_DESC(dev_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
++module_param_named(dev_nperio_tx_fifo_size,
++		   dwc_otg_module_params.dev_nperio_tx_fifo_size, int, 0444);
++MODULE_PARM_DESC(dev_nperio_tx_fifo_size,
++		 "Number of words in the non-periodic Tx FIFO 16-32768");
++module_param_named(dev_perio_tx_fifo_size_1,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[0], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_1,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_2,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[1], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_2,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_3,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[2], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_3,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_4,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[3], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_4,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_5,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[4], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_5,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_6,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[5], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_6,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_7,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[6], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_7,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_8,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[7], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_8,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_9,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[8], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_9,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_10,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[9], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_10,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_11,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[10], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_11,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_12,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[11], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_12,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_13,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[12], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_13,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_14,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[13], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_14,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(dev_perio_tx_fifo_size_15,
++		   dwc_otg_module_params.dev_perio_tx_fifo_size[14], int, 0444);
++MODULE_PARM_DESC(dev_perio_tx_fifo_size_15,
++		 "Number of words in the periodic Tx FIFO 4-768");
++module_param_named(host_rx_fifo_size, dwc_otg_module_params.host_rx_fifo_size,
++		   int, 0444);
++MODULE_PARM_DESC(host_rx_fifo_size, "Number of words in the Rx FIFO 16-32768");
++module_param_named(host_nperio_tx_fifo_size,
++		   dwc_otg_module_params.host_nperio_tx_fifo_size, int, 0444);
++MODULE_PARM_DESC(host_nperio_tx_fifo_size,
++		 "Number of words in the non-periodic Tx FIFO 16-32768");
++module_param_named(host_perio_tx_fifo_size,
++		   dwc_otg_module_params.host_perio_tx_fifo_size, int, 0444);
++MODULE_PARM_DESC(host_perio_tx_fifo_size,
++		 "Number of words in the host periodic Tx FIFO 16-32768");
++module_param_named(max_transfer_size, dwc_otg_module_params.max_transfer_size,
++		   int, 0444);
++/** @todo Set the max to 512K, modify checks */
++MODULE_PARM_DESC(max_transfer_size,
++		 "The maximum transfer size supported in bytes 2047-65535");
++module_param_named(max_packet_count, dwc_otg_module_params.max_packet_count,
++		   int, 0444);
++MODULE_PARM_DESC(max_packet_count,
++		 "The maximum number of packets in a transfer 15-511");
++module_param_named(host_channels, dwc_otg_module_params.host_channels, int,
++		   0444);
++MODULE_PARM_DESC(host_channels,
++		 "The number of host channel registers to use 1-16");
++module_param_named(dev_endpoints, dwc_otg_module_params.dev_endpoints, int,
++		   0444);
++MODULE_PARM_DESC(dev_endpoints,
++		 "The number of endpoints in addition to EP0 available for device mode 1-15");
++module_param_named(phy_type, dwc_otg_module_params.phy_type, int, 0444);
++MODULE_PARM_DESC(phy_type, "0=Reserved 1=UTMI+ 2=ULPI");
++module_param_named(phy_utmi_width, dwc_otg_module_params.phy_utmi_width, int,
++		   0444);
++MODULE_PARM_DESC(phy_utmi_width, "Specifies the UTMI+ Data Width 8 or 16 bits");
++module_param_named(phy_ulpi_ddr, dwc_otg_module_params.phy_ulpi_ddr, int, 0444);
++MODULE_PARM_DESC(phy_ulpi_ddr,
++		 "ULPI at double or single data rate 0=Single 1=Double");
++module_param_named(phy_ulpi_ext_vbus, dwc_otg_module_params.phy_ulpi_ext_vbus,
++		   int, 0444);
++MODULE_PARM_DESC(phy_ulpi_ext_vbus,
++		 "ULPI PHY using internal or external vbus 0=Internal");
++module_param_named(i2c_enable, dwc_otg_module_params.i2c_enable, int, 0444);
++MODULE_PARM_DESC(i2c_enable, "FS PHY Interface");
++module_param_named(ulpi_fs_ls, dwc_otg_module_params.ulpi_fs_ls, int, 0444);
++MODULE_PARM_DESC(ulpi_fs_ls, "ULPI PHY FS/LS mode only");
++module_param_named(ts_dline, dwc_otg_module_params.ts_dline, int, 0444);
++MODULE_PARM_DESC(ts_dline, "Term select Dline pulsing for all PHYs");
++module_param_named(debug, g_dbg_lvl, int, 0444);
++MODULE_PARM_DESC(debug, "");
++
++module_param_named(en_multiple_tx_fifo,
++		   dwc_otg_module_params.en_multiple_tx_fifo, int, 0444);
++MODULE_PARM_DESC(en_multiple_tx_fifo,
++		 "Dedicated Non Periodic Tx FIFOs 0=disabled 1=enabled");
++module_param_named(dev_tx_fifo_size_1,
++		   dwc_otg_module_params.dev_tx_fifo_size[0], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_1, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_2,
++		   dwc_otg_module_params.dev_tx_fifo_size[1], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_2, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_3,
++		   dwc_otg_module_params.dev_tx_fifo_size[2], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_3, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_4,
++		   dwc_otg_module_params.dev_tx_fifo_size[3], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_4, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_5,
++		   dwc_otg_module_params.dev_tx_fifo_size[4], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_5, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_6,
++		   dwc_otg_module_params.dev_tx_fifo_size[5], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_6, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_7,
++		   dwc_otg_module_params.dev_tx_fifo_size[6], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_7, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_8,
++		   dwc_otg_module_params.dev_tx_fifo_size[7], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_8, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_9,
++		   dwc_otg_module_params.dev_tx_fifo_size[8], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_9, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_10,
++		   dwc_otg_module_params.dev_tx_fifo_size[9], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_10, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_11,
++		   dwc_otg_module_params.dev_tx_fifo_size[10], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_11, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_12,
++		   dwc_otg_module_params.dev_tx_fifo_size[11], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_12, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_13,
++		   dwc_otg_module_params.dev_tx_fifo_size[12], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_13, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_14,
++		   dwc_otg_module_params.dev_tx_fifo_size[13], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_14, "Number of words in the Tx FIFO 4-768");
++module_param_named(dev_tx_fifo_size_15,
++		   dwc_otg_module_params.dev_tx_fifo_size[14], int, 0444);
++MODULE_PARM_DESC(dev_tx_fifo_size_15, "Number of words in the Tx FIFO 4-768");
++
++module_param_named(thr_ctl, dwc_otg_module_params.thr_ctl, int, 0444);
++MODULE_PARM_DESC(thr_ctl,
++		 "Thresholding enable flag bit 0 - non ISO Tx thr., 1 - ISO Tx thr., 2 - Rx thr.- bit 0=disabled 1=enabled");
++module_param_named(tx_thr_length, dwc_otg_module_params.tx_thr_length, int,
++		   0444);
++MODULE_PARM_DESC(tx_thr_length, "Tx Threshold length in 32 bit DWORDs");
++module_param_named(rx_thr_length, dwc_otg_module_params.rx_thr_length, int,
++		   0444);
++MODULE_PARM_DESC(rx_thr_length, "Rx Threshold length in 32 bit DWORDs");
++
++module_param_named(pti_enable, dwc_otg_module_params.pti_enable, int, 0444);
++module_param_named(mpi_enable, dwc_otg_module_params.mpi_enable, int, 0444);
++module_param_named(lpm_enable, dwc_otg_module_params.lpm_enable, int, 0444);
++MODULE_PARM_DESC(lpm_enable, "LPM Enable 0=LPM Disabled 1=LPM Enabled");
++module_param_named(ic_usb_cap, dwc_otg_module_params.ic_usb_cap, int, 0444);
++MODULE_PARM_DESC(ic_usb_cap,
++		 "IC_USB Capability 0=IC_USB Disabled 1=IC_USB Enabled");
++module_param_named(ahb_thr_ratio, dwc_otg_module_params.ahb_thr_ratio, int,
++		   0444);
++MODULE_PARM_DESC(ahb_thr_ratio, "AHB Threshold Ratio");
++module_param_named(power_down, dwc_otg_module_params.power_down, int, 0444);
++MODULE_PARM_DESC(power_down, "Power Down Mode");
++module_param_named(reload_ctl, dwc_otg_module_params.reload_ctl, int, 0444);
++MODULE_PARM_DESC(reload_ctl, "HFIR Reload Control");
++module_param_named(dev_out_nak, dwc_otg_module_params.dev_out_nak, int, 0444);
++MODULE_PARM_DESC(dev_out_nak, "Enable Device OUT NAK");
++module_param_named(cont_on_bna, dwc_otg_module_params.cont_on_bna, int, 0444);
++MODULE_PARM_DESC(cont_on_bna, "Enable Enable Continue on BNA");
++module_param_named(ahb_single, dwc_otg_module_params.ahb_single, int, 0444);
++MODULE_PARM_DESC(ahb_single, "Enable AHB Single Support");
++module_param_named(adp_enable, dwc_otg_module_params.adp_enable, int, 0444);
++MODULE_PARM_DESC(adp_enable, "ADP Enable 0=ADP Disabled 1=ADP Enabled");
++module_param_named(otg_ver, dwc_otg_module_params.otg_ver, int, 0444);
++MODULE_PARM_DESC(otg_ver, "OTG revision supported 0=OTG 1.3 1=OTG 2.0");
++module_param(microframe_schedule, bool, 0444);
++MODULE_PARM_DESC(microframe_schedule, "Enable the microframe scheduler");
++
++module_param(fiq_enable, bool, 0444);
++MODULE_PARM_DESC(fiq_enable, "Enable the FIQ");
++module_param(nak_holdoff, ushort, 0644);
++MODULE_PARM_DESC(nak_holdoff, "Throttle duration for bulk split-transaction endpoints on a NAK. Default 8");
++module_param(fiq_fsm_enable, bool, 0444);
++MODULE_PARM_DESC(fiq_fsm_enable, "Enable the FIQ to perform split transactions as defined by fiq_fsm_mask");
++module_param(fiq_fsm_mask, ushort, 0444);
++MODULE_PARM_DESC(fiq_fsm_mask, "Bitmask of transactions to perform in the FIQ.\n"
++					"Bit 0 : Non-periodic split transactions\n"
++					"Bit 1 : Periodic split transactions\n"
++					"Bit 2 : High-speed multi-transfer isochronous\n"
++					"All other bits should be set 0.");
++module_param(int_ep_interval_min, ushort, 0644);
++MODULE_PARM_DESC(int_ep_interval_min, "Clamp high-speed Interrupt endpoints to a minimum polling interval.\n"
++					"0..1 = Use endpoint default\n"
++					"2..n = Minimum interval n microframes. Use powers of 2.\n");
++
++module_param(cil_force_host, bool, 0644);
++MODULE_PARM_DESC(cil_force_host, "On a connector-ID status change, "
++					"force Host Mode regardless of OTG state.");
++
++/** @page "Module Parameters"
++ *
++ * The following parameters may be specified when starting the module.
++ * These parameters define how the DWC_otg controller should be
++ * configured. Parameter values are passed to the CIL initialization
++ * function dwc_otg_cil_init
++ *
++ * Example: <code>modprobe dwc_otg speed=1 otg_cap=1</code>
++ *
++
++ <table>
++ <tr><td>Parameter Name</td><td>Meaning</td></tr>
++
++ <tr>
++ <td>otg_cap</td>
++ <td>Specifies the OTG capabilities. The driver will automatically detect the
++ value for this parameter if none is specified.
++ - 0: HNP and SRP capable (default, if available)
++ - 1: SRP Only capable
++ - 2: No HNP/SRP capable
++ </td></tr>
++
++ <tr>
++ <td>dma_enable</td>
++ <td>Specifies whether to use slave or DMA mode for accessing the data FIFOs.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: Slave
++ - 1: DMA (default, if available)
++ </td></tr>
++
++ <tr>
++ <td>dma_burst_size</td>
++ <td>The DMA Burst size (applicable only for External DMA Mode).
++ - Values: 1, 4, 8 16, 32, 64, 128, 256 (default 32)
++ </td></tr>
++
++ <tr>
++ <td>speed</td>
++ <td>Specifies the maximum speed of operation in host and device mode. The
++ actual speed depends on the speed of the attached device and the value of
++ phy_type.
++ - 0: High Speed (default)
++ - 1: Full Speed
++ </td></tr>
++
++ <tr>
++ <td>host_support_fs_ls_low_power</td>
++ <td>Specifies whether low power mode is supported when attached to a Full
++ Speed or Low Speed device in host mode.
++ - 0: Don't support low power mode (default)
++ - 1: Support low power mode
++ </td></tr>
++
++ <tr>
++ <td>host_ls_low_power_phy_clk</td>
++ <td>Specifies the PHY clock rate in low power mode when connected to a Low
++ Speed device in host mode. This parameter is applicable only if
++ HOST_SUPPORT_FS_LS_LOW_POWER is enabled.
++ - 0: 48 MHz (default)
++ - 1: 6 MHz
++ </td></tr>
++
++ <tr>
++ <td>enable_dynamic_fifo</td>
++ <td> Specifies whether FIFOs may be resized by the driver software.
++ - 0: Use cC FIFO size parameters
++ - 1: Allow dynamic FIFO sizing (default)
++ </td></tr>
++
++ <tr>
++ <td>data_fifo_size</td>
++ <td>Total number of 4-byte words in the data FIFO memory. This memory
++ includes the Rx FIFO, non-periodic Tx FIFO, and periodic Tx FIFOs.
++ - Values: 32 to 32768 (default 8192)
++
++ Note: The total FIFO memory depth in the FPGA configuration is 8192.
++ </td></tr>
++
++ <tr>
++ <td>dev_rx_fifo_size</td>
++ <td>Number of 4-byte words in the Rx FIFO in device mode when dynamic
++ FIFO sizing is enabled.
++ - Values: 16 to 32768 (default 1064)
++ </td></tr>
++
++ <tr>
++ <td>dev_nperio_tx_fifo_size</td>
++ <td>Number of 4-byte words in the non-periodic Tx FIFO in device mode when
++ dynamic FIFO sizing is enabled.
++ - Values: 16 to 32768 (default 1024)
++ </td></tr>
++
++ <tr>
++ <td>dev_perio_tx_fifo_size_n (n = 1 to 15)</td>
++ <td>Number of 4-byte words in each of the periodic Tx FIFOs in device mode
++ when dynamic FIFO sizing is enabled.
++ - Values: 4 to 768 (default 256)
++ </td></tr>
++
++ <tr>
++ <td>host_rx_fifo_size</td>
++ <td>Number of 4-byte words in the Rx FIFO in host mode when dynamic FIFO
++ sizing is enabled.
++ - Values: 16 to 32768 (default 1024)
++ </td></tr>
++
++ <tr>
++ <td>host_nperio_tx_fifo_size</td>
++ <td>Number of 4-byte words in the non-periodic Tx FIFO in host mode when
++ dynamic FIFO sizing is enabled in the core.
++ - Values: 16 to 32768 (default 1024)
++ </td></tr>
++
++ <tr>
++ <td>host_perio_tx_fifo_size</td>
++ <td>Number of 4-byte words in the host periodic Tx FIFO when dynamic FIFO
++ sizing is enabled.
++ - Values: 16 to 32768 (default 1024)
++ </td></tr>
++
++ <tr>
++ <td>max_transfer_size</td>
++ <td>The maximum transfer size supported in bytes.
++ - Values: 2047 to 65,535 (default 65,535)
++ </td></tr>
++
++ <tr>
++ <td>max_packet_count</td>
++ <td>The maximum number of packets in a transfer.
++ - Values: 15 to 511 (default 511)
++ </td></tr>
++
++ <tr>
++ <td>host_channels</td>
++ <td>The number of host channel registers to use.
++ - Values: 1 to 16 (default 12)
++
++ Note: The FPGA configuration supports a maximum of 12 host channels.
++ </td></tr>
++
++ <tr>
++ <td>dev_endpoints</td>
++ <td>The number of endpoints in addition to EP0 available for device mode
++ operations.
++ - Values: 1 to 15 (default 6 IN and OUT)
++
++ Note: The FPGA configuration supports a maximum of 6 IN and OUT endpoints in
++ addition to EP0.
++ </td></tr>
++
++ <tr>
++ <td>phy_type</td>
++ <td>Specifies the type of PHY interface to use. By default, the driver will
++ automatically detect the phy_type.
++ - 0: Full Speed
++ - 1: UTMI+ (default, if available)
++ - 2: ULPI
++ </td></tr>
++
++ <tr>
++ <td>phy_utmi_width</td>
++ <td>Specifies the UTMI+ Data Width. This parameter is applicable for a
++ phy_type of UTMI+. Also, this parameter is applicable only if the
++ OTG_HSPHY_WIDTH cC parameter was set to "8 and 16 bits", meaning that the
++ core has been configured to work at either data path width.
++ - Values: 8 or 16 bits (default 16)
++ </td></tr>
++
++ <tr>
++ <td>phy_ulpi_ddr</td>
++ <td>Specifies whether the ULPI operates at double or single data rate. This
++ parameter is only applicable if phy_type is ULPI.
++ - 0: single data rate ULPI interface with 8 bit wide data bus (default)
++ - 1: double data rate ULPI interface with 4 bit wide data bus
++ </td></tr>
++
++ <tr>
++ <td>i2c_enable</td>
++ <td>Specifies whether to use the I2C interface for full speed PHY. This
++ parameter is only applicable if PHY_TYPE is FS.
++ - 0: Disabled (default)
++ - 1: Enabled
++ </td></tr>
++
++ <tr>
++ <td>ulpi_fs_ls</td>
++ <td>Specifies whether to use ULPI FS/LS mode only.
++ - 0: Disabled (default)
++ - 1: Enabled
++ </td></tr>
++
++ <tr>
++ <td>ts_dline</td>
++ <td>Specifies whether term select D-Line pulsing for all PHYs is enabled.
++ - 0: Disabled (default)
++ - 1: Enabled
++ </td></tr>
++
++ <tr>
++ <td>en_multiple_tx_fifo</td>
++ <td>Specifies whether dedicatedto tx fifos are enabled for non periodic IN EPs.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: Disabled
++ - 1: Enabled (default, if available)
++ </td></tr>
++
++ <tr>
++ <td>dev_tx_fifo_size_n (n = 1 to 15)</td>
++ <td>Number of 4-byte words in each of the Tx FIFOs in device mode
++ when dynamic FIFO sizing is enabled.
++ - Values: 4 to 768 (default 256)
++ </td></tr>
++
++ <tr>
++ <td>tx_thr_length</td>
++ <td>Transmit Threshold length in 32 bit double words
++ - Values: 8 to 128 (default 64)
++ </td></tr>
++
++ <tr>
++ <td>rx_thr_length</td>
++ <td>Receive Threshold length in 32 bit double words
++ - Values: 8 to 128 (default 64)
++ </td></tr>
++
++<tr>
++ <td>thr_ctl</td>
++ <td>Specifies whether to enable Thresholding for Device mode. Bits 0, 1, 2 of
++ this parmater specifies if thresholding is enabled for non-Iso Tx, Iso Tx and
++ Rx transfers accordingly.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - Values: 0 to 7 (default 0)
++ Bit values indicate:
++ - 0: Thresholding disabled
++ - 1: Thresholding enabled
++ </td></tr>
++
++<tr>
++ <td>dma_desc_enable</td>
++ <td>Specifies whether to enable Descriptor DMA mode.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: Descriptor DMA disabled
++ - 1: Descriptor DMA (default, if available)
++ </td></tr>
++
++<tr>
++ <td>mpi_enable</td>
++ <td>Specifies whether to enable MPI enhancement mode.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: MPI disabled (default)
++ - 1: MPI enable
++ </td></tr>
++
++<tr>
++ <td>pti_enable</td>
++ <td>Specifies whether to enable PTI enhancement support.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: PTI disabled (default)
++ - 1: PTI enable
++ </td></tr>
++
++<tr>
++ <td>lpm_enable</td>
++ <td>Specifies whether to enable LPM support.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: LPM disabled
++ - 1: LPM enable (default, if available)
++ </td></tr>
++
++<tr>
++ <td>ic_usb_cap</td>
++ <td>Specifies whether to enable IC_USB capability.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: IC_USB disabled (default, if available)
++ - 1: IC_USB enable
++ </td></tr>
++
++<tr>
++ <td>ahb_thr_ratio</td>
++ <td>Specifies AHB Threshold ratio.
++ - Values: 0 to 3 (default 0)
++ </td></tr>
++
++<tr>
++ <td>power_down</td>
++ <td>Specifies Power Down(Hibernation) Mode.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: Power Down disabled (default)
++ - 2: Power Down enabled
++ </td></tr>
++
++ <tr>
++ <td>reload_ctl</td>
++ <td>Specifies whether dynamic reloading of the HFIR register is allowed during
++ run time. The driver will automatically detect the value for this parameter if
++ none is specified. In case the HFIR value is reloaded when HFIR.RldCtrl == 1'b0
++ the core might misbehave.
++ - 0: Reload Control disabled (default)
++ - 1: Reload Control enabled
++ </td></tr>
++
++ <tr>
++ <td>dev_out_nak</td>
++ <td>Specifies whether  Device OUT NAK enhancement enabled or no.
++ The driver will automatically detect the value for this parameter if
++ none is specified. This parameter is valid only when OTG_EN_DESC_DMA == 1b1.
++ - 0: The core does not set NAK after Bulk OUT transfer complete (default)
++ - 1: The core sets NAK after Bulk OUT transfer complete
++ </td></tr>
++
++ <tr>
++ <td>cont_on_bna</td>
++ <td>Specifies whether Enable Continue on BNA enabled or no.
++ After receiving BNA interrupt the core disables the endpoint,when the
++ endpoint is re-enabled by the application the
++ - 0: Core starts processing from the DOEPDMA descriptor (default)
++ - 1: Core starts processing from the descriptor which received the BNA.
++ This parameter is valid only when OTG_EN_DESC_DMA == 1b1.
++ </td></tr>
++
++ <tr>
++ <td>ahb_single</td>
++ <td>This bit when programmed supports SINGLE transfers for remainder data
++ in a transfer for DMA mode of operation.
++ - 0: The remainder data will be sent using INCR burst size (default)
++ - 1: The remainder data will be sent using SINGLE burst size.
++ </td></tr>
++
++<tr>
++ <td>adp_enable</td>
++ <td>Specifies whether ADP feature is enabled.
++ The driver will automatically detect the value for this parameter if none is
++ specified.
++ - 0: ADP feature disabled (default)
++ - 1: ADP feature enabled
++ </td></tr>
++
++  <tr>
++ <td>otg_ver</td>
++ <td>Specifies whether OTG is performing as USB OTG Revision 2.0 or Revision 1.3
++ USB OTG device.
++ - 0: OTG 2.0 support disabled (default)
++ - 1: OTG 2.0 support enabled
++ </td></tr>
++
++*/
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_driver.h
+@@ -0,0 +1,86 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_driver.h $
++ * $Revision: #19 $
++ * $Date: 2010/11/15 $
++ * $Change: 1627671 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#ifndef __DWC_OTG_DRIVER_H__
++#define __DWC_OTG_DRIVER_H__
++
++/** @file
++ * This file contains the interface to the Linux driver.
++ */
++#include "dwc_otg_os_dep.h"
++#include "dwc_otg_core_if.h"
++
++/* Type declarations */
++struct dwc_otg_pcd;
++struct dwc_otg_hcd;
++
++/**
++ * This structure is a wrapper that encapsulates the driver components used to
++ * manage a single DWC_otg controller.
++ */
++typedef struct dwc_otg_device {
++	/** Structure containing OS-dependent stuff. KEEP THIS STRUCT AT THE
++	 * VERY BEGINNING OF THE DEVICE STRUCT. OSes such as FreeBSD and NetBSD
++	 * require this. */
++	struct os_dependent os_dep;
++
++	/** Pointer to the core interface structure. */
++	dwc_otg_core_if_t *core_if;
++
++	/** Pointer to the PCD structure. */
++	struct dwc_otg_pcd *pcd;
++
++	/** Pointer to the HCD structure. */
++	struct dwc_otg_hcd *hcd;
++
++	/** Flag to indicate whether the common IRQ handler is installed. */
++	uint8_t common_irq_installed;
++
++} dwc_otg_device_t;
++
++/*We must clear S3C24XX_EINTPEND external interrupt register
++ * because after clearing in this register trigerred IRQ from
++ * H/W core in kernel interrupt can be occured again before OTG
++ * handlers clear all IRQ sources of Core registers because of
++ * timing latencies and Low Level IRQ Type.
++ */
++#ifdef CONFIG_MACH_IPMATE
++#define  S3C2410X_CLEAR_EINTPEND()   \
++do { \
++	__raw_writel(1UL << 11,S3C24XX_EINTPEND); \
++} while (0)
++#else
++#define  S3C2410X_CLEAR_EINTPEND()   do { } while (0)
++#endif
++
++#endif
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
+@@ -0,0 +1,1431 @@
++/*
++ * dwc_otg_fiq_fsm.c - The finite state machine FIQ
++ *
++ * Copyright (c) 2013 Raspberry Pi Foundation
++ *
++ * Author: Jonathan Bell <jonathan@raspberrypi.org>
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions are met:
++ *	* Redistributions of source code must retain the above copyright
++ *	  notice, this list of conditions and the following disclaimer.
++ *	* Redistributions in binary form must reproduce the above copyright
++ *	  notice, this list of conditions and the following disclaimer in the
++ *	  documentation and/or other materials provided with the distribution.
++ *	* Neither the name of Raspberry Pi nor the
++ *	  names of its contributors may be used to endorse or promote products
++ *	  derived from this software without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
++ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ *
++ * This FIQ implements functionality that performs split transactions on
++ * the dwc_otg hardware without any outside intervention. A split transaction
++ * is "queued" by nominating a specific host channel to perform the entirety
++ * of a split transaction. This FIQ will then perform the microframe-precise
++ * scheduling required in each phase of the transaction until completion.
++ *
++ * The FIQ functionality is glued into the Synopsys driver via the entry point
++ * in the FSM enqueue function, and at the exit point in handling a HC interrupt
++ * for a FSM-enabled channel.
++ *
++ * NB: Large parts of this implementation have architecture-specific code.
++ * For porting this functionality to other ARM machines, the minimum is required:
++ * - An interrupt controller allowing the top-level dwc USB interrupt to be routed
++ *   to the FIQ
++ * - A method of forcing a software generated interrupt from FIQ mode that then
++ *   triggers an IRQ entry (with the dwc USB handler called by this IRQ number)
++ * - Guaranteed interrupt routing such that both the FIQ and SGI occur on the same
++ *   processor core - there is no locking between the FIQ and IRQ (aside from
++ *   local_fiq_disable)
++ *
++ */
++
++#include "dwc_otg_fiq_fsm.h"
++
++
++char buffer[1000*16];
++int wptr;
++void notrace _fiq_print(enum fiq_debug_level dbg_lvl, volatile struct fiq_state *state, char *fmt, ...)
++{
++	enum fiq_debug_level dbg_lvl_req = FIQDBG_ERR;
++	va_list args;
++	char text[17];
++	hfnum_data_t hfnum = { .d32 = FIQ_READ(state->dwc_regs_base + 0x408) };
++
++	if((dbg_lvl & dbg_lvl_req) || dbg_lvl == FIQDBG_ERR)
++	{
++		snprintf(text, 9, " %4d:%1u  ", hfnum.b.frnum/8, hfnum.b.frnum & 7);
++		va_start(args, fmt);
++		vsnprintf(text+8, 9, fmt, args);
++		va_end(args);
++
++		memcpy(buffer + wptr, text, 16);
++		wptr = (wptr + 16) % sizeof(buffer);
++	}
++}
++
++
++#ifdef CONFIG_ARM64
++
++inline void fiq_fsm_spin_lock(fiq_lock_t *lock)
++{
++	spin_lock((spinlock_t *)lock);
++}
++
++inline void fiq_fsm_spin_unlock(fiq_lock_t *lock)
++{
++	spin_unlock((spinlock_t *)lock);
++}
++
++#else
++
++/**
++ * fiq_fsm_spin_lock() - ARMv6+ bare bones spinlock
++ * Must be called with local interrupts and FIQ disabled.
++ */
++#if defined(CONFIG_ARCH_BCM2835) && defined(CONFIG_SMP)
++inline void fiq_fsm_spin_lock(fiq_lock_t *lock)
++{
++	unsigned long tmp;
++	uint32_t newval;
++	fiq_lock_t lockval;
++	/* Nested locking, yay. If we are on the same CPU as the fiq, then the disable
++	 * will be sufficient. If we are on a different CPU, then the lock protects us. */
++	prefetchw(&lock->slock);
++	asm volatile (
++	"1:     ldrex   %0, [%3]\n"
++	"       add     %1, %0, %4\n"
++	"       strex   %2, %1, [%3]\n"
++	"       teq     %2, #0\n"
++	"       bne     1b"
++	: "=&r" (lockval), "=&r" (newval), "=&r" (tmp)
++	: "r" (&lock->slock), "I" (1 << 16)
++	: "cc");
++
++	while (lockval.tickets.next != lockval.tickets.owner) {
++		wfe();
++		lockval.tickets.owner = READ_ONCE(lock->tickets.owner);
++	}
++	smp_mb();
++}
++#else
++inline void fiq_fsm_spin_lock(fiq_lock_t *lock) { }
++#endif
++
++/**
++ * fiq_fsm_spin_unlock() - ARMv6+ bare bones spinunlock
++ */
++#if defined(CONFIG_ARCH_BCM2835) && defined(CONFIG_SMP)
++inline void fiq_fsm_spin_unlock(fiq_lock_t *lock)
++{
++	smp_mb();
++	lock->tickets.owner++;
++	dsb_sev();
++}
++#else
++inline void fiq_fsm_spin_unlock(fiq_lock_t *lock) { }
++#endif
++
++#endif
++
++/**
++ * fiq_fsm_restart_channel() - Poke channel enable bit for a split transaction
++ * @channel: channel to re-enable
++ */
++static void fiq_fsm_restart_channel(struct fiq_state *st, int n, int force)
++{
++	hcchar_data_t hcchar = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR) };
++
++	hcchar.b.chen = 0;
++	if (st->channel[n].hcchar_copy.b.eptype & 0x1) {
++		hfnum_data_t hfnum = { .d32 = FIQ_READ(st->dwc_regs_base + HFNUM) };
++		/* Hardware bug workaround: update the ssplit index */
++		if (st->channel[n].hcsplt_copy.b.spltena)
++			st->channel[n].expected_uframe = (hfnum.b.frnum + 1) & 0x3FFF;
++
++		hcchar.b.oddfrm = (hfnum.b.frnum & 0x1) ? 0	: 1;
++	}
++
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR, hcchar.d32);
++	hcchar.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
++	hcchar.b.chen = 1;
++
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR, hcchar.d32);
++	fiq_print(FIQDBG_INT, st, "HCGO %01d %01d", n, force);
++}
++
++/**
++ * fiq_fsm_setup_csplit() - Prepare a host channel for a CSplit transaction stage
++ * @st: Pointer to the channel's state
++ * @n : channel number
++ *
++ * Change host channel registers to perform a complete-split transaction. Being mindful of the
++ * endpoint direction, set control regs up correctly.
++ */
++static void notrace fiq_fsm_setup_csplit(struct fiq_state *st, int n)
++{
++	hcsplt_data_t hcsplt = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT) };
++	hctsiz_data_t hctsiz = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ) };
++
++	hcsplt.b.compsplt = 1;
++	if (st->channel[n].hcchar_copy.b.epdir == 1) {
++		// If IN, the CSPLIT result contains the data or a hub handshake. hctsiz = maxpacket.
++		hctsiz.b.xfersize = st->channel[n].hctsiz_copy.b.xfersize;
++	} else {
++		// If OUT, the CSPLIT result contains handshake only.
++		hctsiz.b.xfersize = 0;
++	}
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT, hcsplt.d32);
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, hctsiz.d32);
++	mb();
++}
++
++/**
++ * fiq_fsm_restart_np_pending() - Restart a single non-periodic contended transfer
++ * @st: Pointer to the channel's state
++ * @num_channels: Total number of host channels
++ * @orig_channel: Channel index of completed transfer
++ *
++ * In the case where an IN and OUT transfer are simultaneously scheduled to the
++ * same device/EP, inadequate hub implementations will misbehave. Once the first
++ * transfer is complete, a pending non-periodic split can then be issued.
++ */
++static void notrace fiq_fsm_restart_np_pending(struct fiq_state *st, int num_channels, int orig_channel)
++{
++	int i;
++	int dev_addr = st->channel[orig_channel].hcchar_copy.b.devaddr;
++	int ep_num = st->channel[orig_channel].hcchar_copy.b.epnum;
++	for (i = 0; i < num_channels; i++) {
++		if (st->channel[i].fsm == FIQ_NP_SSPLIT_PENDING &&
++			st->channel[i].hcchar_copy.b.devaddr == dev_addr &&
++			st->channel[i].hcchar_copy.b.epnum == ep_num) {
++			st->channel[i].fsm = FIQ_NP_SSPLIT_STARTED;
++			fiq_fsm_restart_channel(st, i, 0);
++			break;
++		}
++	}
++}
++
++static inline int notrace fiq_get_xfer_len(struct fiq_state *st, int n)
++{
++	/* The xfersize register is a bit wonky. For IN transfers, it decrements by the packet size. */
++	hctsiz_data_t hctsiz = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ) };
++
++	if (st->channel[n].hcchar_copy.b.epdir == 0) {
++		return st->channel[n].hctsiz_copy.b.xfersize;
++	} else {
++		return st->channel[n].hctsiz_copy.b.xfersize - hctsiz.b.xfersize;
++	}
++
++}
++
++
++/**
++ * fiq_increment_dma_buf() - update DMA address for bounce buffers after a CSPLIT
++ *
++ * Of use only for IN periodic transfers.
++ */
++static int notrace fiq_increment_dma_buf(struct fiq_state *st, int num_channels, int n)
++{
++	hcdma_data_t hcdma;
++	int i = st->channel[n].dma_info.index;
++	int len;
++	struct fiq_dma_blob *blob = (struct fiq_dma_blob *) st->dma_base;
++
++	len = fiq_get_xfer_len(st, n);
++	fiq_print(FIQDBG_INT, st, "LEN: %03d", len);
++	st->channel[n].dma_info.slot_len[i] = len;
++	i++;
++	if (i > 6)
++		BUG();
++
++	hcdma.d32 = (dma_addr_t) &blob->channel[n].index[i].buf[0];
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
++	st->channel[n].dma_info.index = i;
++	return 0;
++}
++
++/**
++ * fiq_reload_hctsiz() - for IN transactions, reset HCTSIZ
++ */
++static void notrace fiq_fsm_reload_hctsiz(struct fiq_state *st, int n)
++{
++	hctsiz_data_t hctsiz = { .d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ) };
++	hctsiz.b.xfersize = st->channel[n].hctsiz_copy.b.xfersize;
++	hctsiz.b.pktcnt = 1;
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, hctsiz.d32);
++}
++
++/**
++ * fiq_fsm_reload_hcdma() - for OUT transactions, rewind DMA pointer
++ */
++static void notrace fiq_fsm_reload_hcdma(struct fiq_state *st, int n)
++{
++	hcdma_data_t hcdma = st->channel[n].hcdma_copy;
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
++}
++
++/**
++ * fiq_iso_out_advance() - update DMA address and split position bits
++ * for isochronous OUT transactions.
++ *
++ * Returns 1 if this is the last packet queued, 0 otherwise. Split-ALL and
++ * Split-BEGIN states are not handled - this is done when the transaction was queued.
++ *
++ * This function must only be called from the FIQ_ISO_OUT_ACTIVE state.
++ */
++static int notrace fiq_iso_out_advance(struct fiq_state *st, int num_channels, int n)
++{
++	hcsplt_data_t hcsplt;
++	hctsiz_data_t hctsiz;
++	hcdma_data_t hcdma;
++	struct fiq_dma_blob *blob = (struct fiq_dma_blob *) st->dma_base;
++	int last = 0;
++	int i = st->channel[n].dma_info.index;
++
++	fiq_print(FIQDBG_INT, st, "ADV %01d %01d ", n, i);
++	i++;
++	if (i == 4)
++		last = 1;
++	if (st->channel[n].dma_info.slot_len[i+1] == 255)
++		last = 1;
++
++	/* New DMA address - address of bounce buffer referred to in index */
++	hcdma.d32 = (dma_addr_t) blob->channel[n].index[i].buf;
++	//hcdma.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA);
++	//hcdma.d32 += st->channel[n].dma_info.slot_len[i];
++	fiq_print(FIQDBG_INT, st, "LAST: %01d ", last);
++	fiq_print(FIQDBG_INT, st, "LEN: %03d", st->channel[n].dma_info.slot_len[i]);
++	hcsplt.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT);
++	hctsiz.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ);
++	hcsplt.b.xactpos = (last) ? ISOC_XACTPOS_END : ISOC_XACTPOS_MID;
++	/* Set up new packet length */
++	hctsiz.b.pktcnt = 1;
++	hctsiz.b.xfersize = st->channel[n].dma_info.slot_len[i];
++	fiq_print(FIQDBG_INT, st, "%08x", hctsiz.d32);
++
++	st->channel[n].dma_info.index++;
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT, hcsplt.d32);
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, hctsiz.d32);
++	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
++	return last;
++}
++
++/**
++ * fiq_fsm_tt_next_isoc() - queue next pending isochronous out start-split on a TT
++ *
++ * Despite the limitations of the DWC core, we can force a microframe pipeline of
++ * isochronous OUT start-split transactions while waiting for a corresponding other-type
++ * of endpoint to finish its CSPLITs. TTs have big periodic buffers therefore it
++ * is very unlikely that filling the start-split FIFO will cause data loss.
++ * This allows much better interleaving of transactions in an order-independent way-
++ * there is no requirement to prioritise isochronous, just a state-space search has
++ * to be performed on each periodic start-split complete interrupt.
++ */
++static int notrace fiq_fsm_tt_next_isoc(struct fiq_state *st, int num_channels, int n)
++{
++	int hub_addr = st->channel[n].hub_addr;
++	int port_addr = st->channel[n].port_addr;
++	int i, poked = 0;
++	for (i = 0; i < num_channels; i++) {
++		if (i == n || st->channel[i].fsm == FIQ_PASSTHROUGH)
++			continue;
++		if (st->channel[i].hub_addr == hub_addr &&
++			st->channel[i].port_addr == port_addr) {
++			switch (st->channel[i].fsm) {
++			case FIQ_PER_ISO_OUT_PENDING:
++				if (st->channel[i].nrpackets == 1) {
++					st->channel[i].fsm = FIQ_PER_ISO_OUT_LAST;
++				} else {
++					st->channel[i].fsm = FIQ_PER_ISO_OUT_ACTIVE;
++				}
++				fiq_fsm_restart_channel(st, i, 0);
++				poked = 1;
++				break;
++
++			default:
++				break;
++			}
++		}
++		if (poked)
++			break;
++	}
++	return poked;
++}
++
++/**
++ * fiq_fsm_tt_in_use() - search for host channels using this TT
++ * @n: Channel to use as reference
++ *
++ */
++int notrace noinline fiq_fsm_tt_in_use(struct fiq_state *st, int num_channels, int n)
++{
++	int hub_addr = st->channel[n].hub_addr;
++	int port_addr = st->channel[n].port_addr;
++	int i, in_use = 0;
++	for (i = 0; i < num_channels; i++) {
++		if (i == n || st->channel[i].fsm == FIQ_PASSTHROUGH)
++			continue;
++		switch (st->channel[i].fsm) {
++		/* TT is reserved for channels that are in the middle of a periodic
++		 * split transaction.
++		 */
++		case FIQ_PER_SSPLIT_STARTED:
++		case FIQ_PER_CSPLIT_WAIT:
++		case FIQ_PER_CSPLIT_NYET1:
++		//case FIQ_PER_CSPLIT_POLL:
++		case FIQ_PER_ISO_OUT_ACTIVE:
++		case FIQ_PER_ISO_OUT_LAST:
++			if (st->channel[i].hub_addr == hub_addr &&
++				st->channel[i].port_addr == port_addr) {
++				in_use = 1;
++			}
++			break;
++		default:
++			break;
++		}
++		if (in_use)
++			break;
++	}
++	return in_use;
++}
++
++/**
++ * fiq_fsm_more_csplits() - determine whether additional CSPLITs need
++ * 			to be issued for this IN transaction.
++ *
++ * We cannot tell the inbound PID of a data packet due to hardware limitations.
++ * we need to make an educated guess as to whether we need to queue another CSPLIT
++ * or not. A no-brainer is when we have received enough data to fill the endpoint
++ * size, but for endpoints that give variable-length data then we have to resort
++ * to heuristics.
++ *
++ * We also return whether this is the last CSPLIT to be queued, again based on
++ * heuristics. This is to allow a 1-uframe overlap of periodic split transactions.
++ * Note: requires at least 1 CSPLIT to have been performed prior to being called.
++ */
++
++/*
++ * We need some way of guaranteeing if a returned periodic packet of size X
++ * has a DATA0 PID.
++ * The heuristic value of 144 bytes assumes that the received data has maximal
++ * bit-stuffing and the clock frequency of the transmitting device is at the lowest
++ * permissible limit. If the transfer length results in a final packet size
++ * 144 < p <= 188, then an erroneous CSPLIT will be issued.
++ * Also used to ensure that an endpoint will nominally only return a single
++ * complete-split worth of data.
++ */
++#define DATA0_PID_HEURISTIC 144
++
++static int notrace noinline fiq_fsm_more_csplits(struct fiq_state *state, int n, int *probably_last)
++{
++
++	int i;
++	int total_len = 0;
++	int more_needed = 1;
++	struct fiq_channel_state *st = &state->channel[n];
++
++	for (i = 0; i < st->dma_info.index; i++) {
++			total_len += st->dma_info.slot_len[i];
++	}
++
++	*probably_last = 0;
++
++	if (st->hcchar_copy.b.eptype == 0x3) {
++		/*
++		 * An interrupt endpoint will take max 2 CSPLITs. if we are receiving data
++		 * then this is definitely the last CSPLIT.
++		 */
++		*probably_last = 1;
++	} else {
++		/* Isoc IN. This is a bit risky if we are the first transaction:
++		 * we may have been held off slightly. */
++		if (i > 1 && st->dma_info.slot_len[st->dma_info.index-1] <= DATA0_PID_HEURISTIC) {
++			more_needed = 0;
++		}
++		/* If in the next uframe we will receive enough data to fill the endpoint,
++		 * then only issue 1 more csplit.
++		 */
++		if (st->hctsiz_copy.b.xfersize - total_len <= DATA0_PID_HEURISTIC)
++			*probably_last = 1;
++	}
++
++	if (total_len >= st->hctsiz_copy.b.xfersize ||
++		i == 6 || total_len == 0)
++		/* Note: due to bit stuffing it is possible to have > 6 CSPLITs for
++		 * a single endpoint. Accepting more would completely break our scheduling mechanism though
++		 * - in these extreme cases we will pass through a truncated packet.
++		 */
++		more_needed = 0;
++
++	return more_needed;
++}
++
++/**
++ * fiq_fsm_too_late() - Test transaction for lateness
++ *
++ * If a SSPLIT for a large IN transaction is issued too late in a frame,
++ * the hub will disable the port to the device and respond with ERR handshakes.
++ * The hub status endpoint will not reflect this change.
++ * Returns 1 if we will issue a SSPLIT that will result in a device babble.
++ */
++int notrace fiq_fsm_too_late(struct fiq_state *st, int n)
++{
++	int uframe;
++	hfnum_data_t hfnum = { .d32 = FIQ_READ(st->dwc_regs_base + HFNUM) };
++	uframe = hfnum.b.frnum & 0x7;
++	if ((uframe < 6) && (st->channel[n].nrpackets + 1 + uframe > 7)) {
++		return 1;
++	} else {
++		return 0;
++	}
++}
++
++
++/**
++ * fiq_fsm_start_next_periodic() - A half-arsed attempt at a microframe pipeline
++ *
++ * Search pending transactions in the start-split pending state and queue them.
++ * Don't queue packets in uframe .5 (comes out in .6) (USB2.0 11.18.4).
++ * Note: we specifically don't do isochronous OUT transactions first because better
++ * use of the TT's start-split fifo can be achieved by pipelining an IN before an OUT.
++ */
++static void notrace noinline fiq_fsm_start_next_periodic(struct fiq_state *st, int num_channels)
++{
++	int n;
++	hfnum_data_t hfnum = { .d32 = FIQ_READ(st->dwc_regs_base + HFNUM) };
++	if ((hfnum.b.frnum & 0x7) == 5)
++		return;
++	for (n = 0; n < num_channels; n++) {
++		if (st->channel[n].fsm == FIQ_PER_SSPLIT_QUEUED) {
++			/* Check to see if any other transactions are using this TT */
++			if(!fiq_fsm_tt_in_use(st, num_channels, n)) {
++				if (!fiq_fsm_too_late(st, n)) {
++					st->channel[n].fsm = FIQ_PER_SSPLIT_STARTED;
++					fiq_print(FIQDBG_INT, st, "NEXTPER ");
++					fiq_fsm_restart_channel(st, n, 0);
++				} else {
++					st->channel[n].fsm = FIQ_PER_SPLIT_TIMEOUT;
++				}
++				break;
++			}
++		}
++	}
++	for (n = 0; n < num_channels; n++) {
++		if (st->channel[n].fsm == FIQ_PER_ISO_OUT_PENDING) {
++			if (!fiq_fsm_tt_in_use(st, num_channels, n)) {
++				fiq_print(FIQDBG_INT, st, "NEXTISO ");
++				if (st->channel[n].nrpackets == 1)
++					st->channel[n].fsm = FIQ_PER_ISO_OUT_LAST;
++				else
++					st->channel[n].fsm = FIQ_PER_ISO_OUT_ACTIVE;
++				fiq_fsm_restart_channel(st, n, 0);
++				break;
++			}
++		}
++	}
++}
++
++/**
++ * fiq_fsm_update_hs_isoc() - update isochronous frame and transfer data
++ * @state:	Pointer to fiq_state
++ * @n:		Channel transaction is active on
++ * @hcint:	Copy of host channel interrupt register
++ *
++ * Returns 0 if there are no more transactions for this HC to do, 1
++ * otherwise.
++ */
++static int notrace noinline fiq_fsm_update_hs_isoc(struct fiq_state *state, int n, hcint_data_t hcint)
++{
++	struct fiq_channel_state *st = &state->channel[n];
++	int xfer_len = 0, nrpackets = 0;
++	hcdma_data_t hcdma;
++	fiq_print(FIQDBG_INT, state, "HSISO %02d", n);
++
++	xfer_len = fiq_get_xfer_len(state, n);
++	st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].actual_length = xfer_len;
++
++	st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].status = hcint.d32;
++
++	st->hs_isoc_info.index++;
++	if (st->hs_isoc_info.index == st->hs_isoc_info.nrframes) {
++		return 0;
++	}
++
++	/* grab the next DMA address offset from the array */
++	hcdma.d32 = st->hcdma_copy.d32 + st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].offset;
++	FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
++
++	/* We need to set multi_count. This is a bit tricky - has to be set per-transaction as
++	 * the core needs to be told to send the correct number. Caution: for IN transfers,
++	 * this is always set to the maximum size of the endpoint. */
++	xfer_len = st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].length;
++	/* Integer divide in a FIQ: fun. FIXME: make this not suck */
++	nrpackets = (xfer_len + st->hcchar_copy.b.mps - 1) / st->hcchar_copy.b.mps;
++	if (nrpackets == 0)
++		nrpackets = 1;
++	st->hcchar_copy.b.multicnt = nrpackets;
++	st->hctsiz_copy.b.pktcnt = nrpackets;
++
++	/* Initial PID also needs to be set */
++	if (st->hcchar_copy.b.epdir == 0) {
++		st->hctsiz_copy.b.xfersize = xfer_len;
++		switch (st->hcchar_copy.b.multicnt) {
++		case 1:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
++			break;
++		case 2:
++		case 3:
++			st->hctsiz_copy.b.pid = DWC_PID_MDATA;
++			break;
++		}
++
++	} else {
++		st->hctsiz_copy.b.xfersize = nrpackets * st->hcchar_copy.b.mps;
++		switch (st->hcchar_copy.b.multicnt) {
++		case 1:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
++			break;
++		case 2:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA1;
++			break;
++		case 3:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA2;
++			break;
++		}
++	}
++	FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, st->hctsiz_copy.d32);
++	FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR, st->hcchar_copy.d32);
++	/* Channel is enabled on hcint handler exit */
++	fiq_print(FIQDBG_INT, state, "HSISOOUT");
++	return 1;
++}
++
++
++/**
++ * fiq_fsm_do_sof() - FSM start-of-frame interrupt handler
++ * @state:	Pointer to the state struct passed from banked FIQ mode registers.
++ * @num_channels:	set according to the DWC hardware configuration
++ *
++ * The SOF handler in FSM mode has two functions
++ * 1. Hold off SOF from causing schedule advancement in IRQ context if there's
++ *    nothing to do
++ * 2. Advance certain FSM states that require either a microframe delay, or a microframe
++ *    of holdoff.
++ *
++ * The second part is architecture-specific to mach-bcm2835 -
++ * a sane interrupt controller would have a mask register for ARM interrupt sources
++ * to be promoted to the nFIQ line, but it doesn't. Instead a single interrupt
++ * number (USB) can be enabled. This means that certain parts of the USB specification
++ * that require "wait a little while, then issue another packet" cannot be fulfilled with
++ * the timing granularity required to achieve optimal throughout. The workaround is to use
++ * the SOF "timer" (125uS) to perform this task.
++ */
++static int notrace noinline fiq_fsm_do_sof(struct fiq_state *state, int num_channels)
++{
++	hfnum_data_t hfnum = { .d32 = FIQ_READ(state->dwc_regs_base + HFNUM) };
++	int n;
++	int kick_irq = 0;
++
++	if ((hfnum.b.frnum & 0x7) == 1) {
++		/* We cannot issue csplits for transactions in the last frame past (n+1).1
++		 * Check to see if there are any transactions that are stale.
++		 * Boot them out.
++		 */
++		for (n = 0; n < num_channels; n++) {
++			switch (state->channel[n].fsm) {
++			case FIQ_PER_CSPLIT_WAIT:
++			case FIQ_PER_CSPLIT_NYET1:
++			case FIQ_PER_CSPLIT_POLL:
++			case FIQ_PER_CSPLIT_LAST:
++				/* Check if we are no longer in the same full-speed frame. */
++				if (((state->channel[n].expected_uframe & 0x3FFF) & ~0x7) <
++						(hfnum.b.frnum & ~0x7))
++					state->channel[n].fsm = FIQ_PER_SPLIT_TIMEOUT;
++				break;
++			default:
++				break;
++			}
++		}
++	}
++
++	for (n = 0; n < num_channels; n++) {
++		switch (state->channel[n].fsm) {
++
++		case FIQ_NP_SSPLIT_RETRY:
++		case FIQ_NP_IN_CSPLIT_RETRY:
++		case FIQ_NP_OUT_CSPLIT_RETRY:
++			fiq_fsm_restart_channel(state, n, 0);
++			break;
++
++		case FIQ_HS_ISOC_SLEEPING:
++			/* Is it time to wake this channel yet? */
++			if (--state->channel[n].uframe_sleeps == 0) {
++				state->channel[n].fsm = FIQ_HS_ISOC_TURBO;
++				fiq_fsm_restart_channel(state, n, 0);
++			}
++			break;
++
++		case FIQ_PER_SSPLIT_QUEUED:
++			if ((hfnum.b.frnum & 0x7) == 5)
++				break;
++			if(!fiq_fsm_tt_in_use(state, num_channels, n)) {
++				if (!fiq_fsm_too_late(state, n)) {
++					fiq_print(FIQDBG_INT, state, "SOF GO %01d", n);
++					fiq_fsm_restart_channel(state, n, 0);
++					state->channel[n].fsm = FIQ_PER_SSPLIT_STARTED;
++				} else {
++					/* Transaction cannot be started without risking a device babble error */
++					state->channel[n].fsm = FIQ_PER_SPLIT_TIMEOUT;
++					state->haintmsk_saved.b2.chint &= ~(1 << n);
++					FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK, 0);
++					kick_irq |= 1;
++				}
++			}
++			break;
++
++		case FIQ_PER_ISO_OUT_PENDING:
++			/* Ordinarily, this should be poked after the SSPLIT
++			 * complete interrupt for a competing transfer on the same
++			 * TT. Doesn't happen for aborted transactions though.
++			 */
++			if ((hfnum.b.frnum & 0x7) >= 5)
++				break;
++			if (!fiq_fsm_tt_in_use(state, num_channels, n)) {
++				/* Hardware bug. SOF can sometimes occur after the channel halt interrupt
++				 * that caused this.
++				 */
++					fiq_fsm_restart_channel(state, n, 0);
++					fiq_print(FIQDBG_INT, state, "SOF ISOC");
++					if (state->channel[n].nrpackets == 1) {
++						state->channel[n].fsm = FIQ_PER_ISO_OUT_LAST;
++					} else {
++						state->channel[n].fsm = FIQ_PER_ISO_OUT_ACTIVE;
++					}
++			}
++			break;
++
++		case FIQ_PER_CSPLIT_WAIT:
++			/* we are guaranteed to be in this state if and only if the SSPLIT interrupt
++			 * occurred when the bus transaction occurred. The SOF interrupt reversal bug
++			 * will utterly bugger this up though.
++			 */
++			if (hfnum.b.frnum != state->channel[n].expected_uframe) {
++				fiq_print(FIQDBG_INT, state, "SOFCS %d ", n);
++				state->channel[n].fsm = FIQ_PER_CSPLIT_POLL;
++				fiq_fsm_restart_channel(state, n, 0);
++				fiq_fsm_start_next_periodic(state, num_channels);
++
++			}
++			break;
++
++		case FIQ_PER_SPLIT_TIMEOUT:
++		case FIQ_DEQUEUE_ISSUED:
++			/* Ugly: we have to force a HCD interrupt.
++			 * Poke the mask for the channel in question.
++			 * We will take a fake SOF because of this, but
++			 * that's OK.
++			 */
++			state->haintmsk_saved.b2.chint &= ~(1 << n);
++			FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK, 0);
++			kick_irq |= 1;
++			break;
++
++		default:
++			break;
++		}
++	}
++
++	if (state->kick_np_queues ||
++			dwc_frame_num_le(state->next_sched_frame, hfnum.b.frnum))
++		kick_irq |= 1;
++
++	return !kick_irq;
++}
++
++
++/**
++ * fiq_fsm_do_hcintr() - FSM host channel interrupt handler
++ * @state: Pointer to the FIQ state struct
++ * @num_channels: Number of channels as per hardware config
++ * @n: channel for which HAINT(i) was raised
++ *
++ * An important property is that only the CHHLT interrupt is unmasked. Unfortunately, AHBerr is as well.
++ */
++static int notrace noinline fiq_fsm_do_hcintr(struct fiq_state *state, int num_channels, int n)
++{
++	hcint_data_t hcint;
++	hcintmsk_data_t hcintmsk;
++	hcint_data_t hcint_probe;
++	hcchar_data_t hcchar;
++	int handled = 0;
++	int restart = 0;
++	int last_csplit = 0;
++	int start_next_periodic = 0;
++	struct fiq_channel_state *st = &state->channel[n];
++	hfnum_data_t hfnum;
++
++	hcint.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINT);
++	hcintmsk.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK);
++	hcint_probe.d32 = hcint.d32 & hcintmsk.d32;
++
++	if (st->fsm != FIQ_PASSTHROUGH) {
++		fiq_print(FIQDBG_INT, state, "HC%01d ST%02d", n, st->fsm);
++		fiq_print(FIQDBG_INT, state, "%08x", hcint.d32);
++	}
++
++	switch (st->fsm) {
++
++	case FIQ_PASSTHROUGH:
++	case FIQ_DEQUEUE_ISSUED:
++		/* doesn't belong to us, kick it upstairs */
++		break;
++
++	case FIQ_PASSTHROUGH_ERRORSTATE:
++		/* We are here to emulate the error recovery mechanism of the dwc HCD.
++		 * Several interrupts are unmasked if a previous transaction failed - it's
++		 * death for the FIQ to attempt to handle them as the channel isn't halted.
++		 * Emulate what the HCD does in this situation: mask and continue.
++		 * The FSM has no other state setup so this has to be handled out-of-band.
++		 */
++		fiq_print(FIQDBG_ERR, state, "ERRST %02d", n);
++		if (hcint_probe.b.nak || hcint_probe.b.ack || hcint_probe.b.datatglerr) {
++			fiq_print(FIQDBG_ERR, state, "RESET %02d", n);
++			/* In some random cases we can get a NAK interrupt coincident with a Xacterr
++			 * interrupt, after the device has disappeared.
++			 */
++			if (!hcint.b.xacterr)
++				st->nr_errors = 0;
++			hcintmsk.b.nak = 0;
++			hcintmsk.b.ack = 0;
++			hcintmsk.b.datatglerr = 0;
++			FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINTMSK, hcintmsk.d32);
++			return 1;
++		}
++		if (hcint_probe.b.chhltd) {
++			fiq_print(FIQDBG_ERR, state, "CHHLT %02d", n);
++			fiq_print(FIQDBG_ERR, state, "%08x", hcint.d32);
++			return 0;
++		}
++		break;
++
++	/* Non-periodic state groups */
++	case FIQ_NP_SSPLIT_STARTED:
++	case FIQ_NP_SSPLIT_RETRY:
++		/* Got a HCINT for a NP SSPLIT. Expected ACK / NAK / fail */
++		if (hcint.b.ack) {
++			/* SSPLIT complete. For OUT, the data has been sent. For IN, the LS transaction
++			 * will start shortly. SOF needs to kick the transaction to prevent a NYET flood.
++			 */
++			if(st->hcchar_copy.b.epdir == 1)
++				st->fsm = FIQ_NP_IN_CSPLIT_RETRY;
++			else
++				st->fsm = FIQ_NP_OUT_CSPLIT_RETRY;
++			st->nr_errors = 0;
++			handled = 1;
++			fiq_fsm_setup_csplit(state, n);
++		} else if (hcint.b.nak) {
++			// No buffer space in TT. Retry on a uframe boundary.
++			fiq_fsm_reload_hcdma(state, n);
++			st->fsm = FIQ_NP_SSPLIT_RETRY;
++			handled = 1;
++		} else if (hcint.b.xacterr) {
++			// The only other one we care about is xacterr. This implies HS bus error - retry.
++			st->nr_errors++;
++			if(st->hcchar_copy.b.epdir == 0)
++				fiq_fsm_reload_hcdma(state, n);
++			st->fsm = FIQ_NP_SSPLIT_RETRY;
++			if (st->nr_errors >= 3) {
++				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
++			} else {
++				handled = 1;
++				restart = 1;
++			}
++		} else {
++			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
++			handled = 0;
++			restart = 0;
++		}
++		break;
++
++	case FIQ_NP_IN_CSPLIT_RETRY:
++		/* Received a CSPLIT done interrupt.
++		 * Expected Data/NAK/STALL/NYET for IN.
++		 */
++		if (hcint.b.xfercomp) {
++			/* For IN, data is present. */
++			st->fsm = FIQ_NP_SPLIT_DONE;
++		} else if (hcint.b.nak) {
++			/* no endpoint data. Punt it upstairs */
++			st->fsm = FIQ_NP_SPLIT_DONE;
++		} else if (hcint.b.nyet) {
++			/* CSPLIT NYET - retry on a uframe boundary. */
++			handled = 1;
++			st->nr_errors = 0;
++		} else if (hcint.b.datatglerr) {
++			/* data toggle errors do not set the xfercomp bit. */
++			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
++		} else if (hcint.b.xacterr) {
++			/* HS error. Retry immediate */
++			st->fsm = FIQ_NP_IN_CSPLIT_RETRY;
++			st->nr_errors++;
++			if (st->nr_errors >= 3) {
++				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
++			} else {
++				handled = 1;
++				restart = 1;
++			}
++		} else if (hcint.b.stall || hcint.b.bblerr) {
++			/* A STALL implies either a LS bus error or a genuine STALL. */
++			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
++		} else {
++			/*  Hardware bug. It's possible in some cases to
++			 *  get a channel halt with nothing else set when
++			 *  the response was a NYET. Treat as local 3-strikes retry.
++			 */
++			hcint_data_t hcint_test = hcint;
++			hcint_test.b.chhltd = 0;
++			if (!hcint_test.d32) {
++				st->nr_errors++;
++				if (st->nr_errors >= 3) {
++					st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
++				} else {
++					handled = 1;
++				}
++			} else {
++				/* Bail out if something unexpected happened */
++				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
++			}
++		}
++		if (st->fsm != FIQ_NP_IN_CSPLIT_RETRY) {
++			fiq_fsm_restart_np_pending(state, num_channels, n);
++		}
++		break;
++
++	case FIQ_NP_OUT_CSPLIT_RETRY:
++		/* Received a CSPLIT done interrupt.
++		 * Expected ACK/NAK/STALL/NYET/XFERCOMP for OUT.*/
++		if (hcint.b.xfercomp) {
++			st->fsm = FIQ_NP_SPLIT_DONE;
++		} else if (hcint.b.nak) {
++			// The HCD will implement the holdoff on frame boundaries.
++			st->fsm = FIQ_NP_SPLIT_DONE;
++		} else if (hcint.b.nyet) {
++			// Hub still processing.
++			st->fsm = FIQ_NP_OUT_CSPLIT_RETRY;
++			handled = 1;
++			st->nr_errors = 0;
++			//restart = 1;
++		} else if (hcint.b.xacterr) {
++			/* HS error. retry immediate */
++			st->fsm = FIQ_NP_OUT_CSPLIT_RETRY;
++			st->nr_errors++;
++			if (st->nr_errors >= 3) {
++				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
++			} else {
++				handled = 1;
++				restart = 1;
++			}
++		} else if (hcint.b.stall) {
++			/* LS bus error or genuine stall */
++			st->fsm = FIQ_NP_SPLIT_LS_ABORTED;
++		} else {
++			/*
++			 * Hardware bug. It's possible in some cases to get a
++			 * channel halt with nothing else set when the response was a NYET.
++			 * Treat as local 3-strikes retry.
++			 */
++			hcint_data_t hcint_test = hcint;
++			hcint_test.b.chhltd = 0;
++			if (!hcint_test.d32) {
++				st->nr_errors++;
++				if (st->nr_errors >= 3) {
++					st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
++				} else {
++					handled = 1;
++				}
++			} else {
++				// Something unexpected happened. AHBerror or babble perhaps. Let the IRQ deal with it.
++				st->fsm = FIQ_NP_SPLIT_HS_ABORTED;
++			}
++		}
++		if (st->fsm != FIQ_NP_OUT_CSPLIT_RETRY) {
++			fiq_fsm_restart_np_pending(state, num_channels, n);
++		}
++		break;
++
++	/* Periodic split states (except isoc out) */
++	case FIQ_PER_SSPLIT_STARTED:
++		/* Expect an ACK or failure for SSPLIT */
++		if (hcint.b.ack) {
++			/*
++			 * SSPLIT transfer complete interrupt - the generation of this interrupt is fraught with bugs.
++			 * For a packet queued in microframe n-3 to appear in n-2, if the channel is enabled near the EOF1
++			 * point for microframe n-3, the packet will not appear on the bus until microframe n.
++			 * Additionally, the generation of the actual interrupt is dodgy. For a packet appearing on the bus
++			 * in microframe n, sometimes the interrupt is generated immediately. Sometimes, it appears in n+1
++			 * coincident with SOF for n+1.
++			 * SOF is also buggy. It can sometimes be raised AFTER the first bus transaction has taken place.
++			 * These appear to be caused by timing/clock crossing bugs within the core itself.
++			 * State machine workaround.
++			 */
++			hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
++			hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
++			fiq_fsm_setup_csplit(state, n);
++			/* Poke the oddfrm bit. If we are equivalent, we received the interrupt at the correct
++			 * time. If not, then we're in the next SOF.
++			 */
++			if ((hfnum.b.frnum & 0x1) == hcchar.b.oddfrm) {
++				fiq_print(FIQDBG_INT, state, "CSWAIT %01d", n);
++				st->expected_uframe = hfnum.b.frnum;
++				st->fsm = FIQ_PER_CSPLIT_WAIT;
++			} else {
++				fiq_print(FIQDBG_INT, state, "CSPOL  %01d", n);
++				/* For isochronous IN endpoints,
++				 * we need to hold off if we are expecting a lot of data */
++				if (st->hcchar_copy.b.mps < DATA0_PID_HEURISTIC) {
++					start_next_periodic = 1;
++				}
++				/* Danger will robinson: we are in a broken state. If our first interrupt after
++				 * this is a NYET, it will be delayed by 1 uframe and result in an unrecoverable
++				 * lag. Unmask the NYET interrupt.
++				 */
++				st->expected_uframe = (hfnum.b.frnum + 1) & 0x3FFF;
++				st->fsm = FIQ_PER_CSPLIT_BROKEN_NYET1;
++				restart = 1;
++			}
++			handled = 1;
++		} else if (hcint.b.xacterr) {
++			/* 3-strikes retry is enabled, we have hit our max nr_errors */
++			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
++			start_next_periodic = 1;
++		} else {
++			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
++			start_next_periodic = 1;
++		}
++		/* We can now queue the next isochronous OUT transaction, if one is pending. */
++		if(fiq_fsm_tt_next_isoc(state, num_channels, n)) {
++			fiq_print(FIQDBG_INT, state, "NEXTISO ");
++		}
++		break;
++
++	case FIQ_PER_CSPLIT_NYET1:
++		/* First CSPLIT attempt was a NYET. If we get a subsequent NYET,
++		 * we are too late and the TT has dropped its CSPLIT fifo.
++		 */
++		hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
++		hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
++		start_next_periodic = 1;
++		if (hcint.b.nak) {
++			st->fsm = FIQ_PER_SPLIT_DONE;
++		} else if (hcint.b.xfercomp) {
++			fiq_increment_dma_buf(state, num_channels, n);
++			st->fsm = FIQ_PER_CSPLIT_POLL;
++			st->nr_errors = 0;
++			if (fiq_fsm_more_csplits(state, n, &last_csplit)) {
++				handled = 1;
++				restart = 1;
++				if (!last_csplit)
++					start_next_periodic = 0;
++			} else {
++				st->fsm = FIQ_PER_SPLIT_DONE;
++			}
++		} else if (hcint.b.nyet) {
++			/* Doh. Data lost. */
++			st->fsm = FIQ_PER_SPLIT_NYET_ABORTED;
++		} else if (hcint.b.xacterr || hcint.b.stall || hcint.b.bblerr) {
++			st->fsm = FIQ_PER_SPLIT_LS_ABORTED;
++		} else {
++			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
++		}
++		break;
++
++	case FIQ_PER_CSPLIT_BROKEN_NYET1:
++		/*
++		 * we got here because our host channel is in the delayed-interrupt
++		 * state and we cannot take a NYET interrupt any later than when it
++		 * occurred. Disable then re-enable the channel if this happens to force
++		 * CSPLITs to occur at the right time.
++		 */
++		hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
++		hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
++		fiq_print(FIQDBG_INT, state, "BROK: %01d ", n);
++		if (hcint.b.nak) {
++			st->fsm = FIQ_PER_SPLIT_DONE;
++			start_next_periodic = 1;
++		} else if (hcint.b.xfercomp) {
++			fiq_increment_dma_buf(state, num_channels, n);
++			if (fiq_fsm_more_csplits(state, n, &last_csplit)) {
++				st->fsm = FIQ_PER_CSPLIT_POLL;
++				handled = 1;
++				restart = 1;
++				start_next_periodic = 1;
++				/* Reload HCTSIZ for the next transfer */
++				fiq_fsm_reload_hctsiz(state, n);
++				if (!last_csplit)
++					start_next_periodic = 0;
++			} else {
++				st->fsm = FIQ_PER_SPLIT_DONE;
++			}
++		} else if (hcint.b.nyet) {
++			st->fsm = FIQ_PER_SPLIT_NYET_ABORTED;
++			start_next_periodic = 1;
++		} else if (hcint.b.xacterr || hcint.b.stall || hcint.b.bblerr) {
++			/* Local 3-strikes retry is handled by the core. This is a ERR response.*/
++			st->fsm = FIQ_PER_SPLIT_LS_ABORTED;
++		} else {
++			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
++		}
++		break;
++
++	case FIQ_PER_CSPLIT_POLL:
++		hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
++		hcchar.d32 = FIQ_READ(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCCHAR);
++		start_next_periodic = 1;
++		if (hcint.b.nak) {
++			st->fsm = FIQ_PER_SPLIT_DONE;
++		} else if (hcint.b.xfercomp) {
++			fiq_increment_dma_buf(state, num_channels, n);
++			if (fiq_fsm_more_csplits(state, n, &last_csplit)) {
++				handled = 1;
++				restart = 1;
++				/* Reload HCTSIZ for the next transfer */
++				fiq_fsm_reload_hctsiz(state, n);
++				if (!last_csplit)
++					start_next_periodic = 0;
++			} else {
++				st->fsm = FIQ_PER_SPLIT_DONE;
++			}
++		} else if (hcint.b.nyet) {
++			/* Are we a NYET after the first data packet? */
++			if (st->nrpackets == 0) {
++				st->fsm = FIQ_PER_CSPLIT_NYET1;
++				handled = 1;
++				restart = 1;
++			} else {
++				/* We got a NYET when polling CSPLITs. Can happen
++				 * if our heuristic fails, or if someone disables us
++				 * for any significant length of time.
++				 */
++				if (st->nr_errors >= 3) {
++					st->fsm = FIQ_PER_SPLIT_NYET_ABORTED;
++				} else {
++					st->fsm = FIQ_PER_SPLIT_DONE;
++				}
++			}
++		} else if (hcint.b.xacterr || hcint.b.stall || hcint.b.bblerr) {
++			/* For xacterr, Local 3-strikes retry is handled by the core. This is a ERR response.*/
++			st->fsm = FIQ_PER_SPLIT_LS_ABORTED;
++		} else {
++			st->fsm = FIQ_PER_SPLIT_HS_ABORTED;
++		}
++		break;
++
++	case FIQ_HS_ISOC_TURBO:
++		if (fiq_fsm_update_hs_isoc(state, n, hcint)) {
++			/* more transactions to come */
++			handled = 1;
++			fiq_print(FIQDBG_INT, state, "HSISO M ");
++			/* For strided transfers, put ourselves to sleep */
++			if (st->hs_isoc_info.stride > 1) {
++				st->uframe_sleeps = st->hs_isoc_info.stride - 1;
++				st->fsm = FIQ_HS_ISOC_SLEEPING;
++			} else {
++				restart = 1;
++			}
++		} else {
++			st->fsm = FIQ_HS_ISOC_DONE;
++			fiq_print(FIQDBG_INT, state, "HSISO F ");
++		}
++		break;
++
++	case FIQ_HS_ISOC_ABORTED:
++		/* This abort is called by the driver rewriting the state mid-transaction
++		 * which allows the dequeue mechanism to work more effectively.
++		 */
++		break;
++
++	case FIQ_PER_ISO_OUT_ACTIVE:
++		if (hcint.b.ack) {
++			if(fiq_iso_out_advance(state, num_channels, n)) {
++				/* last OUT transfer */
++				st->fsm = FIQ_PER_ISO_OUT_LAST;
++				/*
++				 * Assuming the periodic FIFO in the dwc core
++				 * actually does its job properly, we can queue
++				 * the next ssplit now and in theory, the wire
++				 * transactions will be in-order.
++				 */
++				// No it doesn't. It appears to process requests in host channel order.
++				//start_next_periodic = 1;
++			}
++			handled = 1;
++			restart = 1;
++		} else {
++			/*
++			 * Isochronous transactions carry on regardless. Log the error
++			 * and continue.
++			 */
++			//explode += 1;
++			st->nr_errors++;
++			if(fiq_iso_out_advance(state, num_channels, n)) {
++				st->fsm = FIQ_PER_ISO_OUT_LAST;
++				//start_next_periodic = 1;
++			}
++			handled = 1;
++			restart = 1;
++		}
++		break;
++
++	case FIQ_PER_ISO_OUT_LAST:
++		if (hcint.b.ack) {
++			/* All done here */
++			st->fsm = FIQ_PER_ISO_OUT_DONE;
++		} else {
++			st->fsm = FIQ_PER_ISO_OUT_DONE;
++			st->nr_errors++;
++		}
++		start_next_periodic = 1;
++		break;
++
++	case FIQ_PER_SPLIT_TIMEOUT:
++		/* SOF kicked us because we overran. */
++		start_next_periodic = 1;
++		break;
++
++	default:
++		break;
++	}
++
++	if (handled) {
++		FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCINT, hcint.d32);
++	} else {
++		/* Copy the regs into the state so the IRQ knows what to do */
++		st->hcint_copy.d32 = hcint.d32;
++	}
++
++	if (restart) {
++		/* Restart always implies handled. */
++		if (restart == 2) {
++			/* For complete-split INs, the show must go on.
++			 * Force a channel restart */
++			fiq_fsm_restart_channel(state, n, 1);
++		} else {
++			fiq_fsm_restart_channel(state, n, 0);
++		}
++	}
++	if (start_next_periodic) {
++		fiq_fsm_start_next_periodic(state, num_channels);
++	}
++	if (st->fsm != FIQ_PASSTHROUGH)
++		fiq_print(FIQDBG_INT, state, "FSMOUT%02d", st->fsm);
++
++	return handled;
++}
++
++
++/**
++ * dwc_otg_fiq_fsm() - Flying State Machine (monster) FIQ
++ * @state:		pointer to state struct passed from the banked FIQ mode registers.
++ * @num_channels:	set according to the DWC hardware configuration
++ * @dma:		pointer to DMA bounce buffers for split transaction slots
++ *
++ * The FSM FIQ performs the low-level tasks that normally would be performed by the microcode
++ * inside an EHCI or similar host controller regarding split transactions. The DWC core
++ * interrupts each and every time a split transaction packet is received or sent successfully.
++ * This results in either an interrupt storm when everything is working "properly", or
++ * the interrupt latency of the system in general breaks time-sensitive periodic split
++ * transactions. Pushing the low-level, but relatively easy state machine work into the FIQ
++ * solves these problems.
++ *
++ * Return: void
++ */
++void notrace dwc_otg_fiq_fsm(struct fiq_state *state, int num_channels)
++{
++	gintsts_data_t gintsts, gintsts_handled;
++	gintmsk_data_t gintmsk;
++	//hfnum_data_t hfnum;
++	haint_data_t haint, haint_handled;
++	haintmsk_data_t haintmsk;
++	int kick_irq = 0;
++
++	/* Ensure peripheral reads issued prior to FIQ entry are complete */
++	dsb(sy);
++
++	gintsts_handled.d32 = 0;
++	haint_handled.d32 = 0;
++
++	fiq_fsm_spin_lock(&state->lock);
++	gintsts.d32 = FIQ_READ(state->dwc_regs_base + GINTSTS);
++	gintmsk.d32 = FIQ_READ(state->dwc_regs_base + GINTMSK);
++	gintsts.d32 &= gintmsk.d32;
++
++	if (gintsts.b.sofintr) {
++		/* For FSM mode, SOF is required to keep the state machine advance for
++		 * certain stages of the periodic pipeline. It's death to mask this
++		 * interrupt in that case.
++		 */
++
++		if (!fiq_fsm_do_sof(state, num_channels)) {
++			/* Kick IRQ once. Queue advancement means that all pending transactions
++			 * will get serviced when the IRQ finally executes.
++			 */
++			if (state->gintmsk_saved.b.sofintr == 1)
++				kick_irq |= 1;
++			state->gintmsk_saved.b.sofintr = 0;
++		}
++		gintsts_handled.b.sofintr = 1;
++	}
++
++	if (gintsts.b.hcintr) {
++		int i;
++		haint.d32 = FIQ_READ(state->dwc_regs_base + HAINT);
++		haintmsk.d32 = FIQ_READ(state->dwc_regs_base + HAINTMSK);
++		haint.d32 &= haintmsk.d32;
++		haint_handled.d32 = 0;
++		for (i=0; i<num_channels; i++) {
++			if (haint.b2.chint & (1 << i)) {
++				if(!fiq_fsm_do_hcintr(state, num_channels, i)) {
++					/* HCINT was not handled in FIQ
++					 * HAINT is level-sensitive, leading to level-sensitive ginststs.b.hcint bit.
++					 * Mask HAINT(i) but keep top-level hcint unmasked.
++					 */
++					state->haintmsk_saved.b2.chint &= ~(1 << i);
++				} else {
++					/* do_hcintr cleaned up after itself, but clear haint */
++					haint_handled.b2.chint |= (1 << i);
++				}
++			}
++		}
++
++		if (haint_handled.b2.chint) {
++			FIQ_WRITE(state->dwc_regs_base + HAINT, haint_handled.d32);
++		}
++
++		if (haintmsk.d32 != (haintmsk.d32 & state->haintmsk_saved.d32)) {
++			/*
++			 * This is necessary to avoid multiple retriggers of the MPHI in the case
++			 * where interrupts are held off and HCINTs start to pile up.
++			 * Only wake up the IRQ if a new interrupt came in, was not handled and was
++			 * masked.
++			 */
++			haintmsk.d32 &= state->haintmsk_saved.d32;
++			FIQ_WRITE(state->dwc_regs_base + HAINTMSK, haintmsk.d32);
++			kick_irq |= 1;
++		}
++		/* Top-Level interrupt - always handled because it's level-sensitive */
++		gintsts_handled.b.hcintr = 1;
++	}
++
++
++	/* Clear the bits in the saved register that were not handled but were triggered. */
++	state->gintmsk_saved.d32 &= ~(gintsts.d32 & ~gintsts_handled.d32);
++
++	/* FIQ didn't handle something - mask has changed - write new mask */
++	if (gintmsk.d32 != (gintmsk.d32 & state->gintmsk_saved.d32)) {
++		gintmsk.d32 &= state->gintmsk_saved.d32;
++		gintmsk.b.sofintr = 1;
++		FIQ_WRITE(state->dwc_regs_base + GINTMSK, gintmsk.d32);
++//		fiq_print(FIQDBG_INT, state, "KICKGINT");
++//		fiq_print(FIQDBG_INT, state, "%08x", gintmsk.d32);
++//		fiq_print(FIQDBG_INT, state, "%08x", state->gintmsk_saved.d32);
++		kick_irq |= 1;
++	}
++
++	if (gintsts_handled.d32) {
++		/* Only applies to edge-sensitive bits in GINTSTS */
++		FIQ_WRITE(state->dwc_regs_base + GINTSTS, gintsts_handled.d32);
++	}
++
++	/* We got an interrupt, didn't handle it. */
++	if (kick_irq) {
++		state->mphi_int_count++;
++		if (state->mphi_regs.swirq_set) {
++			FIQ_WRITE(state->mphi_regs.swirq_set, 1);
++		} else {
++			FIQ_WRITE(state->mphi_regs.outdda, state->dummy_send_dma);
++			FIQ_WRITE(state->mphi_regs.outddb, (1<<29));
++		}
++
++	}
++	state->fiq_done++;
++	mb();
++	fiq_fsm_spin_unlock(&state->lock);
++}
++
++
++/**
++ * dwc_otg_fiq_nop() - FIQ "lite"
++ * @state:	pointer to state struct passed from the banked FIQ mode registers.
++ *
++ * The "nop" handler does not intervene on any interrupts other than SOF.
++ * It is limited in scope to deciding at each SOF if the IRQ SOF handler (which deals
++ * with non-periodic/periodic queues) needs to be kicked.
++ *
++ * This is done to hold off the SOF interrupt, which occurs at a rate of 8000 per second.
++ *
++ * Return: void
++ */
++void notrace dwc_otg_fiq_nop(struct fiq_state *state)
++{
++	gintsts_data_t gintsts, gintsts_handled;
++	gintmsk_data_t gintmsk;
++	hfnum_data_t hfnum;
++
++	/* Ensure peripheral reads issued prior to FIQ entry are complete */
++	dsb(sy);
++
++	fiq_fsm_spin_lock(&state->lock);
++	hfnum.d32 = FIQ_READ(state->dwc_regs_base + HFNUM);
++	gintsts.d32 = FIQ_READ(state->dwc_regs_base + GINTSTS);
++	gintmsk.d32 = FIQ_READ(state->dwc_regs_base + GINTMSK);
++	gintsts.d32 &= gintmsk.d32;
++	gintsts_handled.d32 = 0;
++
++	if (gintsts.b.sofintr) {
++		if (!state->kick_np_queues &&
++				dwc_frame_num_gt(state->next_sched_frame, hfnum.b.frnum)) {
++			/* SOF handled, no work to do, just ACK interrupt */
++			gintsts_handled.b.sofintr = 1;
++		} else {
++			/* Kick IRQ */
++			state->gintmsk_saved.b.sofintr = 0;
++		}
++	}
++
++	/* Reset handled interrupts */
++	if(gintsts_handled.d32) {
++		FIQ_WRITE(state->dwc_regs_base + GINTSTS, gintsts_handled.d32);
++	}
++
++	/* Clear the bits in the saved register that were not handled but were triggered. */
++	state->gintmsk_saved.d32 &= ~(gintsts.d32 & ~gintsts_handled.d32);
++
++	/* We got an interrupt, didn't handle it and want to mask it */
++	if (~(state->gintmsk_saved.d32)) {
++		state->mphi_int_count++;
++		gintmsk.d32 &= state->gintmsk_saved.d32;
++		FIQ_WRITE(state->dwc_regs_base + GINTMSK, gintmsk.d32);
++		if (state->mphi_regs.swirq_set) {
++			FIQ_WRITE(state->mphi_regs.swirq_set, 1);
++		} else {
++			/* Force a clear before another dummy send */
++			FIQ_WRITE(state->mphi_regs.intstat, (1<<29));
++			FIQ_WRITE(state->mphi_regs.outdda, state->dummy_send_dma);
++			FIQ_WRITE(state->mphi_regs.outddb, (1<<29));
++		}
++	}
++	state->fiq_done++;
++	mb();
++	fiq_fsm_spin_unlock(&state->lock);
++}
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h
+@@ -0,0 +1,399 @@
++/*
++ * dwc_otg_fiq_fsm.h - Finite state machine FIQ header definitions
++ *
++ * Copyright (c) 2013 Raspberry Pi Foundation
++ *
++ * Author: Jonathan Bell <jonathan@raspberrypi.org>
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions are met:
++ *	* Redistributions of source code must retain the above copyright
++ *	  notice, this list of conditions and the following disclaimer.
++ *	* Redistributions in binary form must reproduce the above copyright
++ *	  notice, this list of conditions and the following disclaimer in the
++ *	  documentation and/or other materials provided with the distribution.
++ *	* Neither the name of Raspberry Pi nor the
++ *	  names of its contributors may be used to endorse or promote products
++ *	  derived from this software without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
++ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ *
++ * This FIQ implements functionality that performs split transactions on
++ * the dwc_otg hardware without any outside intervention. A split transaction
++ * is "queued" by nominating a specific host channel to perform the entirety
++ * of a split transaction. This FIQ will then perform the microframe-precise
++ * scheduling required in each phase of the transaction until completion.
++ *
++ * The FIQ functionality has been surgically implanted into the Synopsys
++ * vendor-provided driver.
++ *
++ */
++
++#ifndef DWC_OTG_FIQ_FSM_H_
++#define DWC_OTG_FIQ_FSM_H_
++
++#include "dwc_otg_regs.h"
++#include "dwc_otg_cil.h"
++#include "dwc_otg_hcd.h"
++#include <linux/kernel.h>
++#include <linux/irqflags.h>
++#include <linux/string.h>
++#include <asm/barrier.h>
++
++#if 0
++#define FLAME_ON(x)					\
++do {							\
++	int gpioreg;                                    \
++							\
++	gpioreg = readl(__io_address(0x20200000+0x8));	\
++	gpioreg &= ~(7 << (x-20)*3);			\
++	gpioreg |= 0x1 << (x-20)*3;			\
++	writel(gpioreg, __io_address(0x20200000+0x8));	\
++							\
++	writel(1<<x, __io_address(0x20200000+(0x1C)));	\
++} while (0)
++
++#define FLAME_OFF(x)					\
++do {							\
++	writel(1<<x, __io_address(0x20200000+(0x28)));	\
++} while (0)
++#else
++#define FLAME_ON(x) do { } while (0)
++#define FLAME_OFF(X) do { } while (0)
++#endif
++
++/* This is a quick-and-dirty arch-specific register read/write. We know that
++ * writes to a peripheral on BCM2835 will always arrive in-order, also that
++ * reads and writes are executed in-order therefore the need for memory barriers
++ * is obviated if we're only talking to USB.
++ */
++#define FIQ_WRITE(_addr_,_data_) (*(volatile unsigned int *) (_addr_) = (_data_))
++#define FIQ_READ(_addr_) (*(volatile unsigned int *) (_addr_))
++
++/* FIQ-ified register definitions. Offsets are from dwc_regs_base. */
++#define GINTSTS		0x014
++#define GINTMSK		0x018
++/* Debug register. Poll the top of the received packets FIFO. */
++#define GRXSTSR		0x01C
++#define HFNUM		0x408
++#define HAINT		0x414
++#define HAINTMSK	0x418
++#define HPRT0		0x440
++
++/* HC_regs start from an offset of 0x500 */
++#define HC_START	0x500
++#define HC_OFFSET	0x020
++
++#define HC_DMA		0x14
++
++#define HCCHAR		0x00
++#define HCSPLT		0x04
++#define HCINT		0x08
++#define HCINTMSK	0x0C
++#define HCTSIZ		0x10
++
++#define ISOC_XACTPOS_ALL 	0b11
++#define ISOC_XACTPOS_BEGIN	0b10
++#define ISOC_XACTPOS_MID	0b00
++#define ISOC_XACTPOS_END	0b01
++
++#define DWC_PID_DATA2	0b01
++#define DWC_PID_MDATA	0b11
++#define DWC_PID_DATA1	0b10
++#define DWC_PID_DATA0	0b00
++
++typedef struct {
++	volatile void* base;
++	volatile void* ctrl;
++	volatile void* outdda;
++	volatile void* outddb;
++	volatile void* intstat;
++	volatile void* swirq_set;
++	volatile void* swirq_clr;
++} mphi_regs_t;
++
++enum fiq_debug_level {
++	FIQDBG_SCHED = (1 << 0),
++	FIQDBG_INT   = (1 << 1),
++	FIQDBG_ERR   = (1 << 2),
++	FIQDBG_PORTHUB = (1 << 3),
++};
++
++#ifdef CONFIG_ARM64
++
++typedef spinlock_t fiq_lock_t;
++
++#else
++
++typedef struct {
++	union {
++		uint32_t slock;
++		struct _tickets {
++			uint16_t owner;
++			uint16_t next;
++		} tickets;
++	};
++} fiq_lock_t;
++
++#endif
++
++struct fiq_state;
++
++extern void _fiq_print (enum fiq_debug_level dbg_lvl, volatile struct fiq_state *state, char *fmt, ...);
++#if 0
++#define fiq_print _fiq_print
++#else
++#define fiq_print(x, y, ...)
++#endif
++
++extern bool fiq_enable, fiq_fsm_enable;
++extern ushort nak_holdoff;
++
++/**
++ * enum fiq_fsm_state - The FIQ FSM states.
++ *
++ * This is the "core" of the FIQ FSM. Broadly, the FSM states follow the
++ * USB2.0 specification for host responses to various transaction states.
++ * There are modifications to this host state machine because of a variety of
++ * quirks and limitations in the dwc_otg hardware.
++ *
++ * The fsm state is also used to communicate back to the driver on completion of
++ * a split transaction. The end states are used in conjunction with the interrupts
++ * raised by the final transaction.
++ */
++enum fiq_fsm_state {
++	/* FIQ isn't enabled for this host channel */
++	FIQ_PASSTHROUGH = 0,
++	/* For the first interrupt received for this channel,
++	 * the FIQ has to ack any interrupts indicating success. */
++	FIQ_PASSTHROUGH_ERRORSTATE = 31,
++	/* Nonperiodic state groups */
++	FIQ_NP_SSPLIT_STARTED = 1,
++	FIQ_NP_SSPLIT_RETRY = 2,
++	/* TT contention - working around hub bugs */
++	FIQ_NP_SSPLIT_PENDING = 33,
++	FIQ_NP_OUT_CSPLIT_RETRY = 3,
++	FIQ_NP_IN_CSPLIT_RETRY = 4,
++	FIQ_NP_SPLIT_DONE = 5,
++	FIQ_NP_SPLIT_LS_ABORTED = 6,
++	/* This differentiates a HS transaction error from a LS one
++	 * (handling the hub state is different) */
++	FIQ_NP_SPLIT_HS_ABORTED = 7,
++
++	/* Periodic state groups */
++	/* Periodic transactions are either started directly by the IRQ handler
++	 * or deferred if the TT is already in use.
++	 */
++	FIQ_PER_SSPLIT_QUEUED = 8,
++	FIQ_PER_SSPLIT_STARTED = 9,
++	FIQ_PER_SSPLIT_LAST = 10,
++
++
++	FIQ_PER_ISO_OUT_PENDING = 11,
++	FIQ_PER_ISO_OUT_ACTIVE = 12,
++	FIQ_PER_ISO_OUT_LAST = 13,
++	FIQ_PER_ISO_OUT_DONE = 27,
++
++	FIQ_PER_CSPLIT_WAIT = 14,
++	FIQ_PER_CSPLIT_NYET1 = 15,
++	FIQ_PER_CSPLIT_BROKEN_NYET1 = 28,
++	FIQ_PER_CSPLIT_NYET_FAFF = 29,
++	/* For multiple CSPLITs (large isoc IN, or delayed interrupt) */
++	FIQ_PER_CSPLIT_POLL = 16,
++	/* The last CSPLIT for a transaction has been issued, differentiates
++	 * for the state machine to queue the next packet.
++	 */
++	FIQ_PER_CSPLIT_LAST = 17,
++
++	FIQ_PER_SPLIT_DONE = 18,
++	FIQ_PER_SPLIT_LS_ABORTED = 19,
++	FIQ_PER_SPLIT_HS_ABORTED = 20,
++	FIQ_PER_SPLIT_NYET_ABORTED = 21,
++	/* Frame rollover has occurred without the transaction finishing. */
++	FIQ_PER_SPLIT_TIMEOUT = 22,
++
++	/* FIQ-accelerated HS Isochronous state groups */
++	FIQ_HS_ISOC_TURBO = 23,
++	/* For interval > 1, SOF wakes up the isochronous FSM */
++	FIQ_HS_ISOC_SLEEPING = 24,
++	FIQ_HS_ISOC_DONE = 25,
++	FIQ_HS_ISOC_ABORTED = 26,
++	FIQ_DEQUEUE_ISSUED = 30,
++	FIQ_TEST = 32,
++};
++
++struct fiq_stack {
++	int magic1;
++	uint8_t stack[2048];
++	int magic2;
++};
++
++
++/**
++ * struct fiq_dma_info - DMA bounce buffer utilisation information (per-channel)
++ * @index:	Number of slots reported used for IN transactions / number of slots
++ *			transmitted for an OUT transaction
++ * @slot_len[6]: Number of actual transfer bytes in each slot (255 if unused)
++ *
++ * Split transaction transfers can have variable length depending on other bus
++ * traffic. The OTG core DMA engine requires 4-byte aligned addresses therefore
++ * each transaction needs a guaranteed aligned address. A maximum of 6 split transfers
++ * can happen per-frame.
++ */
++struct fiq_dma_info {
++	u8 index;
++	u8 slot_len[6];
++};
++
++struct __attribute__((packed)) fiq_split_dma_slot {
++	u8 buf[188];
++};
++
++struct fiq_dma_channel {
++	struct __attribute__((packed)) fiq_split_dma_slot index[6];
++};
++
++struct fiq_dma_blob {
++	struct __attribute__((packed)) fiq_dma_channel channel[0];
++};
++
++/**
++ * struct fiq_hs_isoc_info - USB2.0 isochronous data
++ * @iso_frame:	Pointer to the array of OTG URB iso_frame_descs.
++ * @nrframes:	Total length of iso_frame_desc array
++ * @index:	Current index (FIQ-maintained)
++ * @stride:	Interval in uframes between HS isoc transactions
++ */
++struct fiq_hs_isoc_info {
++	struct dwc_otg_hcd_iso_packet_desc *iso_desc;
++	unsigned int nrframes;
++	unsigned int index;
++	unsigned int stride;
++};
++
++/**
++ * struct fiq_channel_state - FIQ state machine storage
++ * @fsm:	Current state of the channel as understood by the FIQ
++ * @nr_errors:	Number of transaction errors on this split-transaction
++ * @hub_addr:   SSPLIT/CSPLIT destination hub
++ * @port_addr:  SSPLIT/CSPLIT destination port - always 1 if single TT hub
++ * @nrpackets:  For isoc OUT, the number of split-OUT packets to transmit. For
++ * 		split-IN, number of CSPLIT data packets that were received.
++ * @hcchar_copy:
++ * @hcsplt_copy:
++ * @hcintmsk_copy:
++ * @hctsiz_copy:	Copies of the host channel registers.
++ * 			For use as scratch, or for returning state.
++ *
++ * The fiq_channel_state is state storage between interrupts for a host channel. The
++ * FSM state is stored here. Members of this structure must only be set up by the
++ * driver prior to enabling the FIQ for this host channel, and not touched until the FIQ
++ * has updated the state to either a COMPLETE state group or ABORT state group.
++ */
++
++struct fiq_channel_state {
++	enum fiq_fsm_state fsm;
++	unsigned int nr_errors;
++	unsigned int hub_addr;
++	unsigned int port_addr;
++	/* Hardware bug workaround: sometimes channel halt interrupts are
++	 * delayed until the next SOF. Keep track of when we expected to get interrupted. */
++	unsigned int expected_uframe;
++	/* number of uframes remaining (for interval > 1 HS isoc transfers) before next transfer */
++	unsigned int uframe_sleeps;
++	/* in/out for communicating number of dma buffers used, or number of ISOC to do */
++	unsigned int nrpackets;
++	struct fiq_dma_info dma_info;
++	struct fiq_hs_isoc_info hs_isoc_info;
++	/* Copies of HC registers - in/out communication from/to IRQ handler
++	 * and for ease of channel setup. A bit of mungeing is performed - for
++	 * example the hctsiz.b.maxp is _always_ the max packet size of the endpoint.
++	 */
++	hcchar_data_t hcchar_copy;
++	hcsplt_data_t hcsplt_copy;
++	hcint_data_t hcint_copy;
++	hcintmsk_data_t hcintmsk_copy;
++	hctsiz_data_t hctsiz_copy;
++	hcdma_data_t hcdma_copy;
++};
++
++/**
++ * struct fiq_state - top-level FIQ state machine storage
++ * @mphi_regs:		virtual address of the MPHI peripheral register file
++ * @dwc_regs_base:	virtual address of the base of the DWC core register file
++ * @dma_base:		physical address for the base of the DMA bounce buffers
++ * @dummy_send:		Scratch area for sending a fake message to the MPHI peripheral
++ * @gintmsk_saved:	Top-level mask of interrupts that the FIQ has not handled.
++ * 			Used for determining which interrupts fired to set off the IRQ handler.
++ * @haintmsk_saved:	Mask of interrupts from host channels that the FIQ did not handle internally.
++ * @np_count:		Non-periodic transactions in the active queue
++ * @np_sent:		Count of non-periodic transactions that have completed
++ * @next_sched_frame:	For periodic transactions handled by the driver's SOF-driven queuing mechanism,
++ * 			this is the next frame on which a SOF interrupt is required. Used to hold off
++ * 			passing SOF through to the driver until necessary.
++ * @channel[n]:		Per-channel FIQ state. Allocated during init depending on the number of host
++ * 			channels configured into the core logic.
++ *
++ * This is passed as the first argument to the dwc_otg_fiq_fsm top-level FIQ handler from the asm stub.
++ * It contains top-level state information.
++ */
++struct fiq_state {
++	fiq_lock_t lock;
++	mphi_regs_t mphi_regs;
++	void *dwc_regs_base;
++	dma_addr_t dma_base;
++	struct fiq_dma_blob *fiq_dmab;
++	void *dummy_send;
++	dma_addr_t dummy_send_dma;
++	gintmsk_data_t gintmsk_saved;
++	haintmsk_data_t haintmsk_saved;
++	int mphi_int_count;
++	unsigned int fiq_done;
++	unsigned int kick_np_queues;
++	unsigned int next_sched_frame;
++#ifdef FIQ_DEBUG
++	char * buffer;
++	unsigned int bufsiz;
++#endif
++	struct fiq_channel_state channel[0];
++};
++
++#ifdef CONFIG_ARM64
++
++#ifdef local_fiq_enable
++#undef local_fiq_enable
++#endif
++
++#ifdef local_fiq_disable
++#undef local_fiq_disable
++#endif
++
++extern void local_fiq_enable(void);
++
++extern void local_fiq_disable(void);
++
++#endif
++
++extern void fiq_fsm_spin_lock(fiq_lock_t *lock);
++
++extern void fiq_fsm_spin_unlock(fiq_lock_t *lock);
++
++extern int fiq_fsm_too_late(struct fiq_state *st, int n);
++
++extern int fiq_fsm_tt_in_use(struct fiq_state *st, int num_channels, int n);
++
++extern void dwc_otg_fiq_fsm(struct fiq_state *state, int num_channels);
++
++extern void dwc_otg_fiq_nop(struct fiq_state *state);
++
++#endif /* DWC_OTG_FIQ_FSM_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_stub.S
+@@ -0,0 +1,80 @@
++/*
++ * dwc_otg_fiq_fsm.S - assembly stub for the FSM FIQ
++ *
++ * Copyright (c) 2013 Raspberry Pi Foundation
++ *
++ * Author: Jonathan Bell <jonathan@raspberrypi.org>
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions are met:
++ *	* Redistributions of source code must retain the above copyright
++ *	  notice, this list of conditions and the following disclaimer.
++ *	* Redistributions in binary form must reproduce the above copyright
++ *	  notice, this list of conditions and the following disclaimer in the
++ *	  documentation and/or other materials provided with the distribution.
++ *	* Neither the name of Raspberry Pi nor the
++ *	  names of its contributors may be used to endorse or promote products
++ *	  derived from this software without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
++ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++
++#include <asm/assembler.h>
++#include <linux/linkage.h>
++
++
++.text
++
++.global _dwc_otg_fiq_stub_end;
++
++/**
++  * _dwc_otg_fiq_stub() - entry copied to the FIQ vector page to allow
++  * a C-style function call with arguments from the FIQ banked registers.
++  * r0 = &hcd->fiq_state
++  * r1 = &hcd->num_channels
++  * r2 = &hcd->dma_buffers
++  * Tramples: r0, r1, r2, r4, fp, ip
++  */
++
++ENTRY(_dwc_otg_fiq_stub)
++	/* Stash unbanked regs - SP will have been set up for us */
++	mov ip, sp;
++	stmdb sp!, {r0-r12, lr};
++#ifdef FIQ_DEBUG
++	// Cycle profiling - read cycle counter at start
++	mrc p15, 0, r5, c15, c12, 1;
++#endif
++	/* r11 = fp, don't trample it */
++	mov r4, fp;
++	/* set EABI frame size */
++	sub fp, ip, #512;
++
++	/* for fiq NOP mode - just need state */
++	mov r0, r8;
++	/* r9 = num_channels */
++	mov r1, r9;
++	/* r10 = struct *dma_bufs */
++//	mov r2, r10;
++
++	/* r4 = &fiq_c_function */
++	blx r4;
++#ifdef FIQ_DEBUG
++	mrc p15, 0, r4, c15, c12, 1;
++	subs r5, r5, r4;
++	// r5 is now the cycle count time for executing the FIQ. Store it somewhere?
++#endif
++	ldmia sp!, {r0-r12, lr};
++	subs pc, lr, #4;
++_dwc_otg_fiq_stub_end:
++END(_dwc_otg_fiq_stub)
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
+@@ -0,0 +1,4356 @@
++
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.c $
++ * $Revision: #104 $
++ * $Date: 2011/10/24 $
++ * $Change: 1871159 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_DEVICE_ONLY
++
++/** @file
++ * This file implements HCD Core. All code in this file is portable and doesn't
++ * use any OS specific functions.
++ * Interface provided by HCD Core is defined in <code><hcd_if.h></code>
++ * header file.
++ */
++
++#include <linux/usb.h>
++#include <linux/usb/hcd.h>
++
++#include "dwc_otg_hcd.h"
++#include "dwc_otg_regs.h"
++#include "dwc_otg_fiq_fsm.h"
++
++extern bool microframe_schedule;
++extern uint16_t fiq_fsm_mask, nak_holdoff;
++
++//#define DEBUG_HOST_CHANNELS
++#ifdef DEBUG_HOST_CHANNELS
++static int last_sel_trans_num_per_scheduled = 0;
++static int last_sel_trans_num_nonper_scheduled = 0;
++static int last_sel_trans_num_avail_hc_at_start = 0;
++static int last_sel_trans_num_avail_hc_at_end = 0;
++#endif /* DEBUG_HOST_CHANNELS */
++
++
++dwc_otg_hcd_t *dwc_otg_hcd_alloc_hcd(void)
++{
++	return DWC_ALLOC(sizeof(dwc_otg_hcd_t));
++}
++
++/**
++ * Connection timeout function.  An OTG host is required to display a
++ * message if the device does not connect within 10 seconds.
++ */
++void dwc_otg_hcd_connect_timeout(void *ptr)
++{
++	DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, ptr);
++	DWC_PRINTF("Connect Timeout\n");
++	__DWC_ERROR("Device Not Connected/Responding\n");
++}
++
++#if defined(DEBUG)
++static void dump_channel_info(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	if (qh->channel != NULL) {
++		dwc_hc_t *hc = qh->channel;
++		dwc_list_link_t *item;
++		dwc_otg_qh_t *qh_item;
++		int num_channels = hcd->core_if->core_params->host_channels;
++		int i;
++
++		dwc_otg_hc_regs_t *hc_regs;
++		hcchar_data_t hcchar;
++		hcsplt_data_t hcsplt;
++		hctsiz_data_t hctsiz;
++		uint32_t hcdma;
++
++		hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++		hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
++		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++		hcdma = DWC_READ_REG32(&hc_regs->hcdma);
++
++		DWC_PRINTF("  Assigned to channel %p:\n", hc);
++		DWC_PRINTF("    hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32,
++			   hcsplt.d32);
++		DWC_PRINTF("    hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32,
++			   hcdma);
++		DWC_PRINTF("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
++			   hc->dev_addr, hc->ep_num, hc->ep_is_in);
++		DWC_PRINTF("    ep_type: %d\n", hc->ep_type);
++		DWC_PRINTF("    max_packet: %d\n", hc->max_packet);
++		DWC_PRINTF("    data_pid_start: %d\n", hc->data_pid_start);
++		DWC_PRINTF("    xfer_started: %d\n", hc->xfer_started);
++		DWC_PRINTF("    halt_status: %d\n", hc->halt_status);
++		DWC_PRINTF("    xfer_buff: %p\n", hc->xfer_buff);
++		DWC_PRINTF("    xfer_len: %d\n", hc->xfer_len);
++		DWC_PRINTF("    qh: %p\n", hc->qh);
++		DWC_PRINTF("  NP inactive sched:\n");
++		DWC_LIST_FOREACH(item, &hcd->non_periodic_sched_inactive) {
++			qh_item =
++			    DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
++			DWC_PRINTF("    %p\n", qh_item);
++		}
++		DWC_PRINTF("  NP active sched:\n");
++		DWC_LIST_FOREACH(item, &hcd->non_periodic_sched_active) {
++			qh_item =
++			    DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
++			DWC_PRINTF("    %p\n", qh_item);
++		}
++		DWC_PRINTF("  Channels: \n");
++		for (i = 0; i < num_channels; i++) {
++			dwc_hc_t *hc = hcd->hc_ptr_array[i];
++			DWC_PRINTF("    %2d: %p\n", i, hc);
++		}
++	}
++}
++#else
++#define dump_channel_info(hcd, qh)
++#endif /* DEBUG */
++
++/**
++ * Work queue function for starting the HCD when A-Cable is connected.
++ * The hcd_start() must be called in a process context.
++ */
++static void hcd_start_func(void *_vp)
++{
++	dwc_otg_hcd_t *hcd = (dwc_otg_hcd_t *) _vp;
++
++	DWC_DEBUGPL(DBG_HCDV, "%s() %p\n", __func__, hcd);
++	if (hcd) {
++		hcd->fops->start(hcd);
++	}
++}
++
++static void del_xfer_timers(dwc_otg_hcd_t * hcd)
++{
++#ifdef DEBUG
++	int i;
++	int num_channels = hcd->core_if->core_params->host_channels;
++	for (i = 0; i < num_channels; i++) {
++		DWC_TIMER_CANCEL(hcd->core_if->hc_xfer_timer[i]);
++	}
++#endif
++}
++
++static void del_timers(dwc_otg_hcd_t * hcd)
++{
++	del_xfer_timers(hcd);
++	DWC_TIMER_CANCEL(hcd->conn_timer);
++}
++
++/**
++ * Processes all the URBs in a single list of QHs. Completes them with
++ * -ESHUTDOWN and frees the QTD.
++ */
++static void kill_urbs_in_qh_list(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
++{
++	dwc_list_link_t *qh_item, *qh_tmp;
++	dwc_otg_qh_t *qh;
++	dwc_otg_qtd_t *qtd, *qtd_tmp;
++	int quiesced = 0;
++
++	DWC_LIST_FOREACH_SAFE(qh_item, qh_tmp, qh_list) {
++		qh = DWC_LIST_ENTRY(qh_item, dwc_otg_qh_t, qh_list_entry);
++		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp,
++					 &qh->qtd_list, qtd_list_entry) {
++			qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
++			if (qtd->urb != NULL) {
++				hcd->fops->complete(hcd, qtd->urb->priv,
++						    qtd->urb, -DWC_E_SHUTDOWN);
++				dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
++			}
++
++		}
++		if(qh->channel) {
++			int n = qh->channel->hc_num;
++			/* Using hcchar.chen == 1 is not a reliable test.
++			 * It is possible that the channel has already halted
++			 * but not yet been through the IRQ handler.
++			 */
++			if (fiq_fsm_enable && (hcd->fiq_state->channel[qh->channel->hc_num].fsm != FIQ_PASSTHROUGH)) {
++				qh->channel->halt_status = DWC_OTG_HC_XFER_URB_DEQUEUE;
++				qh->channel->halt_pending = 1;
++				if (hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_TURBO ||
++				    hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_SLEEPING)
++					hcd->fiq_state->channel[n].fsm = FIQ_HS_ISOC_ABORTED;
++				/* We're called from disconnect callback or in the middle of freeing the HCD here,
++				 * so FIQ is disabled, top-level interrupts masked and we're holding the spinlock.
++				 * No further URBs will be submitted, but wait 1 microframe for any previously
++				 * submitted periodic DMA to finish.
++				 */
++				if (!quiesced) {
++					udelay(125);
++					quiesced = 1;
++				}
++			} else {
++				dwc_otg_hc_halt(hcd->core_if, qh->channel,
++						DWC_OTG_HC_XFER_URB_DEQUEUE);
++			}
++			qh->channel = NULL;
++		}
++		dwc_otg_hcd_qh_remove(hcd, qh);
++	}
++}
++
++/**
++ * Responds with an error status of ESHUTDOWN to all URBs in the non-periodic
++ * and periodic schedules. The QTD associated with each URB is removed from
++ * the schedule and freed. This function may be called when a disconnect is
++ * detected or when the HCD is being stopped.
++ */
++static void kill_all_urbs(dwc_otg_hcd_t * hcd)
++{
++	kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_inactive);
++	kill_urbs_in_qh_list(hcd, &hcd->non_periodic_sched_active);
++	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_inactive);
++	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_ready);
++	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_assigned);
++	kill_urbs_in_qh_list(hcd, &hcd->periodic_sched_queued);
++}
++
++/**
++ * Start the connection timer.  An OTG host is required to display a
++ * message if the device does not connect within 10 seconds.  The
++ * timer is deleted if a port connect interrupt occurs before the
++ * timer expires.
++ */
++static void dwc_otg_hcd_start_connect_timer(dwc_otg_hcd_t * hcd)
++{
++	DWC_TIMER_SCHEDULE(hcd->conn_timer, 10000 /* 10 secs */ );
++}
++
++/**
++ * HCD Callback function for disconnect of the HCD.
++ *
++ * @param p void pointer to the <code>struct usb_hcd</code>
++ */
++static int32_t dwc_otg_hcd_session_start_cb(void *p)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd;
++	DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
++	dwc_otg_hcd = p;
++	dwc_otg_hcd_start_connect_timer(dwc_otg_hcd);
++	return 1;
++}
++
++/**
++ * HCD Callback function for starting the HCD when A-Cable is
++ * connected.
++ *
++ * @param p void pointer to the <code>struct usb_hcd</code>
++ */
++static int32_t dwc_otg_hcd_start_cb(void *p)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = p;
++	dwc_otg_core_if_t *core_if;
++	hprt0_data_t hprt0;
++
++	core_if = dwc_otg_hcd->core_if;
++
++	if (core_if->op_state == B_HOST) {
++		/*
++		 * Reset the port.  During a HNP mode switch the reset
++		 * needs to occur within 1ms and have a duration of at
++		 * least 50ms.
++		 */
++		hprt0.d32 = dwc_otg_read_hprt0(core_if);
++		hprt0.b.prtrst = 1;
++		DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++	}
++	DWC_WORKQ_SCHEDULE_DELAYED(core_if->wq_otg,
++				   hcd_start_func, dwc_otg_hcd, 50,
++				   "start hcd");
++
++	return 1;
++}
++
++/**
++ * HCD Callback function for disconnect of the HCD.
++ *
++ * @param p void pointer to the <code>struct usb_hcd</code>
++ */
++static int32_t dwc_otg_hcd_disconnect_cb(void *p)
++{
++	gintsts_data_t intr;
++	dwc_otg_hcd_t *dwc_otg_hcd = p;
++
++	DWC_SPINLOCK(dwc_otg_hcd->lock);
++	/*
++	 * Set status flags for the hub driver.
++	 */
++	dwc_otg_hcd->flags.b.port_connect_status_change = 1;
++	dwc_otg_hcd->flags.b.port_connect_status = 0;
++	if(fiq_enable) {
++		local_fiq_disable();
++		fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
++	}
++	/*
++	 * Shutdown any transfers in process by clearing the Tx FIFO Empty
++	 * interrupt mask and status bits and disabling subsequent host
++	 * channel interrupts.
++	 */
++	intr.d32 = 0;
++	intr.b.nptxfempty = 1;
++	intr.b.ptxfempty = 1;
++	intr.b.hcintr = 1;
++	DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk,
++			 intr.d32, 0);
++	DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintsts,
++			 intr.d32, 0);
++
++	del_timers(dwc_otg_hcd);
++
++	/*
++	 * Turn off the vbus power only if the core has transitioned to device
++	 * mode. If still in host mode, need to keep power on to detect a
++	 * reconnection.
++	 */
++	if (dwc_otg_is_device_mode(dwc_otg_hcd->core_if)) {
++		if (dwc_otg_hcd->core_if->op_state != A_SUSPEND) {
++			hprt0_data_t hprt0 = {.d32 = 0 };
++			DWC_PRINTF("Disconnect: PortPower off\n");
++			hprt0.b.prtpwr = 0;
++			DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0,
++					hprt0.d32);
++		}
++
++		dwc_otg_disable_host_interrupts(dwc_otg_hcd->core_if);
++	}
++
++	/* Respond with an error status to all URBs in the schedule. */
++	kill_all_urbs(dwc_otg_hcd);
++
++	if (dwc_otg_is_host_mode(dwc_otg_hcd->core_if)) {
++		/* Clean up any host channels that were in use. */
++		int num_channels;
++		int i;
++		dwc_hc_t *channel;
++		dwc_otg_hc_regs_t *hc_regs;
++		hcchar_data_t hcchar;
++
++		num_channels = dwc_otg_hcd->core_if->core_params->host_channels;
++
++		if (!dwc_otg_hcd->core_if->dma_enable) {
++			/* Flush out any channel requests in slave mode. */
++			for (i = 0; i < num_channels; i++) {
++				channel = dwc_otg_hcd->hc_ptr_array[i];
++				if (DWC_CIRCLEQ_EMPTY_ENTRY
++				    (channel, hc_list_entry)) {
++					hc_regs =
++					    dwc_otg_hcd->core_if->
++					    host_if->hc_regs[i];
++					hcchar.d32 =
++					    DWC_READ_REG32(&hc_regs->hcchar);
++					if (hcchar.b.chen) {
++						hcchar.b.chen = 0;
++						hcchar.b.chdis = 1;
++						hcchar.b.epdir = 0;
++						DWC_WRITE_REG32
++						    (&hc_regs->hcchar,
++						     hcchar.d32);
++					}
++				}
++			}
++		}
++
++		if(fiq_fsm_enable) {
++			for(i=0; i < 128; i++) {
++				dwc_otg_hcd->hub_port[i] = 0;
++			}
++		}
++	}
++
++	if(fiq_enable) {
++		fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
++		local_fiq_enable();
++	}
++
++	if (dwc_otg_hcd->fops->disconnect) {
++		dwc_otg_hcd->fops->disconnect(dwc_otg_hcd);
++	}
++
++	DWC_SPINUNLOCK(dwc_otg_hcd->lock);
++	return 1;
++}
++
++/**
++ * HCD Callback function for stopping the HCD.
++ *
++ * @param p void pointer to the <code>struct usb_hcd</code>
++ */
++static int32_t dwc_otg_hcd_stop_cb(void *p)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = p;
++
++	DWC_DEBUGPL(DBG_HCDV, "%s(%p)\n", __func__, p);
++	dwc_otg_hcd_stop(dwc_otg_hcd);
++	return 1;
++}
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++/**
++ * HCD Callback function for sleep of HCD.
++ *
++ * @param p void pointer to the <code>struct usb_hcd</code>
++ */
++static int dwc_otg_hcd_sleep_cb(void *p)
++{
++	dwc_otg_hcd_t *hcd = p;
++
++	dwc_otg_hcd_free_hc_from_lpm(hcd);
++
++	return 0;
++}
++#endif
++
++
++/**
++ * HCD Callback function for Remote Wakeup.
++ *
++ * @param p void pointer to the <code>struct usb_hcd</code>
++ */
++static int dwc_otg_hcd_rem_wakeup_cb(void *p)
++{
++	dwc_otg_hcd_t *hcd = p;
++
++	if (hcd->core_if->lx_state == DWC_OTG_L2) {
++		hcd->flags.b.port_suspend_change = 1;
++	}
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	else {
++		hcd->flags.b.port_l1_change = 1;
++	}
++#endif
++	return 0;
++}
++
++/**
++ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
++ * stopped.
++ */
++void dwc_otg_hcd_stop(dwc_otg_hcd_t * hcd)
++{
++	hprt0_data_t hprt0 = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD STOP\n");
++
++	/*
++	 * The root hub should be disconnected before this function is called.
++	 * The disconnect will clear the QTD lists (via ..._hcd_urb_dequeue)
++	 * and the QH lists (via ..._hcd_endpoint_disable).
++	 */
++
++	/* Turn off all host-specific interrupts. */
++	dwc_otg_disable_host_interrupts(hcd->core_if);
++
++	/* Turn off the vbus power */
++	DWC_PRINTF("PortPower off\n");
++	hprt0.b.prtpwr = 0;
++	DWC_WRITE_REG32(hcd->core_if->host_if->hprt0, hprt0.d32);
++	dwc_mdelay(1);
++}
++
++int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * hcd,
++			    dwc_otg_hcd_urb_t * dwc_otg_urb, void **ep_handle,
++			    int atomic_alloc)
++{
++	int retval = 0;
++	uint8_t needs_scheduling = 0;
++	dwc_otg_transaction_type_e tr_type;
++	dwc_otg_qtd_t *qtd;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	hprt0_data_t hprt0 = { .d32 = 0 };
++
++#ifdef DEBUG /* integrity checks (Broadcom) */
++	if (NULL == hcd->core_if) {
++		DWC_ERROR("**** DWC OTG HCD URB Enqueue - HCD has NULL core_if\n");
++		/* No longer connected. */
++		return -DWC_E_INVALID;
++	}
++#endif
++	if (!hcd->flags.b.port_connect_status) {
++		/* No longer connected. */
++		DWC_ERROR("Not connected\n");
++		return -DWC_E_NO_DEVICE;
++	}
++
++	/* Some core configurations cannot support LS traffic on a FS root port */
++	if ((hcd->fops->speed(hcd, dwc_otg_urb->priv) == USB_SPEED_LOW) &&
++		(hcd->core_if->hwcfg2.b.fs_phy_type == 1) &&
++		(hcd->core_if->hwcfg2.b.hs_phy_type == 1)) {
++			hprt0.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
++			if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_FULL_SPEED) {
++				return -DWC_E_NO_DEVICE;
++			}
++	}
++
++	qtd = dwc_otg_hcd_qtd_create(dwc_otg_urb, atomic_alloc);
++	if (qtd == NULL) {
++		DWC_ERROR("DWC OTG HCD URB Enqueue failed creating QTD\n");
++		return -DWC_E_NO_MEMORY;
++	}
++#ifdef DEBUG /* integrity checks (Broadcom) */
++	if (qtd->urb == NULL) {
++		DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD with no URBs\n");
++		return -DWC_E_NO_MEMORY;
++	}
++	if (qtd->urb->priv == NULL) {
++		DWC_ERROR("**** DWC OTG HCD URB Enqueue created QTD URB with no URB handle\n");
++		return -DWC_E_NO_MEMORY;
++	}
++#endif
++	intr_mask.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->gintmsk);
++	if(!intr_mask.b.sofintr || fiq_enable) needs_scheduling = 1;
++	if((((dwc_otg_qh_t *)ep_handle)->ep_type == UE_BULK) && !(qtd->urb->flags & URB_GIVEBACK_ASAP))
++		/* Do not schedule SG transactions until qtd has URB_GIVEBACK_ASAP set */
++		needs_scheduling = 0;
++
++	retval = dwc_otg_hcd_qtd_add(qtd, hcd, (dwc_otg_qh_t **) ep_handle, atomic_alloc);
++            // creates a new queue in ep_handle if it doesn't exist already
++	if (retval < 0) {
++		DWC_ERROR("DWC OTG HCD URB Enqueue failed adding QTD. "
++			  "Error status %d\n", retval);
++		dwc_otg_hcd_qtd_free(qtd);
++		return retval;
++	}
++
++	if(needs_scheduling) {
++		tr_type = dwc_otg_hcd_select_transactions(hcd);
++		if (tr_type != DWC_OTG_TRANSACTION_NONE) {
++			dwc_otg_hcd_queue_transactions(hcd, tr_type);
++		}
++	}
++	return retval;
++}
++
++int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * hcd,
++			    dwc_otg_hcd_urb_t * dwc_otg_urb)
++{
++	dwc_otg_qh_t *qh;
++	dwc_otg_qtd_t *urb_qtd;
++	BUG_ON(!hcd);
++	BUG_ON(!dwc_otg_urb);
++
++#ifdef DEBUG /* integrity checks (Broadcom) */
++
++	if (hcd == NULL) {
++		DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL HCD\n");
++		return -DWC_E_INVALID;
++	}
++	if (dwc_otg_urb == NULL) {
++		DWC_ERROR("**** DWC OTG HCD URB Dequeue has NULL URB\n");
++		return -DWC_E_INVALID;
++	}
++	if (dwc_otg_urb->qtd == NULL) {
++		DWC_ERROR("**** DWC OTG HCD URB Dequeue with NULL QTD\n");
++		return -DWC_E_INVALID;
++	}
++	urb_qtd = dwc_otg_urb->qtd;
++	BUG_ON(!urb_qtd);
++	if (urb_qtd->qh == NULL) {
++		DWC_ERROR("**** DWC OTG HCD URB Dequeue with QTD with NULL Q handler\n");
++		return -DWC_E_INVALID;
++	}
++#else
++	urb_qtd = dwc_otg_urb->qtd;
++	BUG_ON(!urb_qtd);
++#endif
++	qh = urb_qtd->qh;
++	BUG_ON(!qh);
++	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
++		if (urb_qtd->in_process) {
++			dump_channel_info(hcd, qh);
++		}
++	}
++#ifdef DEBUG /* integrity checks (Broadcom) */
++	if (hcd->core_if == NULL) {
++		DWC_ERROR("**** DWC OTG HCD URB Dequeue HCD has NULL core_if\n");
++		return -DWC_E_INVALID;
++	}
++#endif
++	if (urb_qtd->in_process && qh->channel) {
++		/* The QTD is in process (it has been assigned to a channel). */
++		if (hcd->flags.b.port_connect_status) {
++			int n = qh->channel->hc_num;
++			/*
++			 * If still connected (i.e. in host mode), halt the
++			 * channel so it can be used for other transfers. If
++			 * no longer connected, the host registers can't be
++			 * written to halt the channel since the core is in
++			 * device mode.
++			 */
++			/* In FIQ FSM mode, we need to shut down carefully.
++			 * The FIQ may attempt to restart a disabled channel */
++			if (fiq_fsm_enable && (hcd->fiq_state->channel[n].fsm != FIQ_PASSTHROUGH)) {
++				int retries = 3;
++				int running = 0;
++				enum fiq_fsm_state state;
++
++				local_fiq_disable();
++				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++				qh->channel->halt_status = DWC_OTG_HC_XFER_URB_DEQUEUE;
++				qh->channel->halt_pending = 1;
++				if (hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_TURBO ||
++				    hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_SLEEPING)
++					hcd->fiq_state->channel[n].fsm = FIQ_HS_ISOC_ABORTED;
++				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++				local_fiq_enable();
++
++				if (dwc_qh_is_non_per(qh)) {
++					do {
++						state = READ_ONCE(hcd->fiq_state->channel[n].fsm);
++						running = (state != FIQ_NP_SPLIT_DONE) &&
++							  (state != FIQ_NP_SPLIT_LS_ABORTED) &&
++							  (state != FIQ_NP_SPLIT_HS_ABORTED);
++						if (!running)
++							break;
++						udelay(125);
++					} while(--retries);
++					if (!retries)
++						DWC_WARN("Timed out waiting for FSM NP transfer to complete on %d",
++							 qh->channel->hc_num);
++				}
++			} else {
++				dwc_otg_hc_halt(hcd->core_if, qh->channel,
++						DWC_OTG_HC_XFER_URB_DEQUEUE);
++			}
++		}
++	}
++
++	/*
++	 * Free the QTD and clean up the associated QH. Leave the QH in the
++	 * schedule if it has any remaining QTDs.
++	 */
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue - "
++                    "delete %sQueue handler\n",
++                    hcd->core_if->dma_desc_enable?"DMA ":"");
++	if (!hcd->core_if->dma_desc_enable) {
++		uint8_t b = urb_qtd->in_process;
++		if (nak_holdoff && qh->do_split && dwc_qh_is_non_per(qh))
++			qh->nak_frame = 0xFFFF;
++		dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
++		if (b) {
++			dwc_otg_hcd_qh_deactivate(hcd, qh, 0);
++			qh->channel = NULL;
++		} else if (DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
++			dwc_otg_hcd_qh_remove(hcd, qh);
++		}
++	} else {
++		dwc_otg_hcd_qtd_remove_and_free(hcd, urb_qtd, qh);
++	}
++	return 0;
++}
++
++int dwc_otg_hcd_endpoint_disable(dwc_otg_hcd_t * hcd, void *ep_handle,
++				 int retry)
++{
++	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
++	int retval = 0;
++	dwc_irqflags_t flags;
++
++	if (retry < 0) {
++		retval = -DWC_E_INVALID;
++		goto done;
++	}
++
++	if (!qh) {
++		retval = -DWC_E_INVALID;
++		goto done;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
++
++	while (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list) && retry) {
++		DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++		retry--;
++		dwc_msleep(5);
++		DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
++	}
++
++	dwc_otg_hcd_qh_remove(hcd, qh);
++
++	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++	/*
++	 * Split dwc_otg_hcd_qh_remove_and_free() into qh_remove
++	 * and qh_free to prevent stack dump on DWC_DMA_FREE() with
++	 * irq_disabled (spinlock_irqsave) in dwc_otg_hcd_desc_list_free()
++	 * and dwc_otg_hcd_frame_list_alloc().
++	 */
++	dwc_otg_hcd_qh_free(hcd, qh);
++
++done:
++	return retval;
++}
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
++int dwc_otg_hcd_endpoint_reset(dwc_otg_hcd_t * hcd, void *ep_handle)
++{
++	int retval = 0;
++	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
++	if (!qh)
++		return -DWC_E_INVALID;
++
++	qh->data_toggle = DWC_OTG_HC_PID_DATA0;
++	return retval;
++}
++#endif
++
++/**
++ * HCD Callback structure for handling mode switching.
++ */
++static dwc_otg_cil_callbacks_t hcd_cil_callbacks = {
++	.start = dwc_otg_hcd_start_cb,
++	.stop = dwc_otg_hcd_stop_cb,
++	.disconnect = dwc_otg_hcd_disconnect_cb,
++	.session_start = dwc_otg_hcd_session_start_cb,
++	.resume_wakeup = dwc_otg_hcd_rem_wakeup_cb,
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	.sleep = dwc_otg_hcd_sleep_cb,
++#endif
++	.p = 0,
++};
++
++/**
++ * Reset tasklet function
++ */
++static void reset_tasklet_func(void *data)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = (dwc_otg_hcd_t *) data;
++	dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
++	hprt0_data_t hprt0;
++
++	DWC_DEBUGPL(DBG_HCDV, "USB RESET tasklet called\n");
++
++	hprt0.d32 = dwc_otg_read_hprt0(core_if);
++	hprt0.b.prtrst = 1;
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++	dwc_mdelay(60);
++
++	hprt0.b.prtrst = 0;
++	DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++	dwc_otg_hcd->flags.b.port_reset_change = 1;
++}
++
++static void completion_tasklet_func(void *ptr)
++{
++	dwc_otg_hcd_t *hcd = (dwc_otg_hcd_t *) ptr;
++	struct urb *urb;
++	urb_tq_entry_t *item;
++	dwc_irqflags_t flags;
++
++	/* This could just be spin_lock_irq */
++	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
++	while (!DWC_TAILQ_EMPTY(&hcd->completed_urb_list)) {
++		item = DWC_TAILQ_FIRST(&hcd->completed_urb_list);
++		urb = item->urb;
++		DWC_TAILQ_REMOVE(&hcd->completed_urb_list, item,
++				urb_tq_entries);
++		DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++		DWC_FREE(item);
++
++		usb_hcd_giveback_urb(hcd->priv, urb, urb->status);
++
++
++		DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
++	}
++	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++	return;
++}
++
++static void qh_list_free(dwc_otg_hcd_t * hcd, dwc_list_link_t * qh_list)
++{
++	dwc_list_link_t *item;
++	dwc_otg_qh_t *qh;
++	dwc_irqflags_t flags;
++
++	if (!qh_list->next) {
++		/* The list hasn't been initialized yet. */
++		return;
++	}
++	/*
++	 * Hold spinlock here. Not needed in that case if bellow
++	 * function is being called from ISR
++	 */
++	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
++	/* Ensure there are no QTDs or URBs left. */
++	kill_urbs_in_qh_list(hcd, qh_list);
++	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++
++	DWC_LIST_FOREACH(item, qh_list) {
++		qh = DWC_LIST_ENTRY(item, dwc_otg_qh_t, qh_list_entry);
++		dwc_otg_hcd_qh_remove_and_free(hcd, qh);
++	}
++}
++
++/**
++ * Exit from Hibernation if Host did not detect SRP from connected SRP capable
++ * Device during SRP time by host power up.
++ */
++void dwc_otg_hcd_power_up(void *ptr)
++{
++	gpwrdn_data_t gpwrdn = {.d32 = 0 };
++	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
++
++	DWC_PRINTF("%s called\n", __FUNCTION__);
++
++	if (!core_if->hibernation_suspend) {
++		DWC_PRINTF("Already exited from Hibernation\n");
++		return;
++	}
++
++	/* Switch on the voltage to the core */
++	gpwrdn.b.pwrdnswtch = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Reset the core */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Disable power clamps */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnclmp = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	/* Remove reset the core signal */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pwrdnrstn = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0, gpwrdn.d32);
++	dwc_udelay(10);
++
++	/* Disable PMU interrupt */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuintsel = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	core_if->hibernation_suspend = 0;
++
++	/* Disable PMU */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.pmuactv = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++	dwc_udelay(10);
++
++	/* Enable VBUS */
++	gpwrdn.d32 = 0;
++	gpwrdn.b.dis_vbus = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, gpwrdn.d32, 0);
++
++	core_if->op_state = A_HOST;
++	dwc_otg_core_init(core_if);
++	dwc_otg_enable_global_interrupts(core_if);
++	cil_hcd_start(core_if);
++}
++
++void dwc_otg_cleanup_fiq_channel(dwc_otg_hcd_t *hcd, uint32_t num)
++{
++	struct fiq_channel_state *st = &hcd->fiq_state->channel[num];
++	struct fiq_dma_blob *blob = hcd->fiq_dmab;
++	int i;
++
++	st->fsm = FIQ_PASSTHROUGH;
++	st->hcchar_copy.d32 = 0;
++	st->hcsplt_copy.d32 = 0;
++	st->hcint_copy.d32 = 0;
++	st->hcintmsk_copy.d32 = 0;
++	st->hctsiz_copy.d32 = 0;
++	st->hcdma_copy.d32 = 0;
++	st->nr_errors = 0;
++	st->hub_addr = 0;
++	st->port_addr = 0;
++	st->expected_uframe = 0;
++	st->nrpackets = 0;
++	st->dma_info.index = 0;
++	for (i = 0; i < 6; i++)
++		st->dma_info.slot_len[i] = 255;
++	st->hs_isoc_info.index = 0;
++	st->hs_isoc_info.iso_desc = NULL;
++	st->hs_isoc_info.nrframes = 0;
++
++	DWC_MEMSET(&blob->channel[num].index[0], 0x6b, 1128);
++}
++
++/**
++ * Frees secondary storage associated with the dwc_otg_hcd structure contained
++ * in the struct usb_hcd field.
++ */
++static void dwc_otg_hcd_free(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	struct device *dev = dwc_otg_hcd_to_dev(dwc_otg_hcd);
++	int i;
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD FREE\n");
++
++	del_timers(dwc_otg_hcd);
++
++	/* Free memory for QH/QTD lists */
++	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_inactive);
++	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->non_periodic_sched_active);
++	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_inactive);
++	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_ready);
++	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_assigned);
++	qh_list_free(dwc_otg_hcd, &dwc_otg_hcd->periodic_sched_queued);
++
++	/* Free memory for the host channels. */
++	for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++		dwc_hc_t *hc = dwc_otg_hcd->hc_ptr_array[i];
++
++#ifdef DEBUG
++		if (dwc_otg_hcd->core_if->hc_xfer_timer[i]) {
++			DWC_TIMER_FREE(dwc_otg_hcd->core_if->hc_xfer_timer[i]);
++		}
++#endif
++		if (hc != NULL) {
++			DWC_DEBUGPL(DBG_HCDV, "HCD Free channel #%i, hc=%p\n",
++				    i, hc);
++			DWC_FREE(hc);
++		}
++	}
++
++	if (dwc_otg_hcd->core_if->dma_enable) {
++		if (dwc_otg_hcd->status_buf_dma) {
++			DWC_DMA_FREE(dev, DWC_OTG_HCD_STATUS_BUF_SIZE,
++				     dwc_otg_hcd->status_buf,
++				     dwc_otg_hcd->status_buf_dma);
++		}
++	} else if (dwc_otg_hcd->status_buf != NULL) {
++		DWC_FREE(dwc_otg_hcd->status_buf);
++	}
++	DWC_SPINLOCK_FREE(dwc_otg_hcd->lock);
++	/* Set core_if's lock pointer to NULL */
++	dwc_otg_hcd->core_if->lock = NULL;
++
++	DWC_TIMER_FREE(dwc_otg_hcd->conn_timer);
++	DWC_TASK_FREE(dwc_otg_hcd->reset_tasklet);
++	DWC_TASK_FREE(dwc_otg_hcd->completion_tasklet);
++	DWC_DMA_FREE(dev, 16, dwc_otg_hcd->fiq_state->dummy_send,
++		     dwc_otg_hcd->fiq_state->dummy_send_dma);
++	DWC_FREE(dwc_otg_hcd->fiq_state);
++
++#ifdef DWC_DEV_SRPCAP
++	if (dwc_otg_hcd->core_if->power_down == 2 &&
++	    dwc_otg_hcd->core_if->pwron_timer) {
++		DWC_TIMER_FREE(dwc_otg_hcd->core_if->pwron_timer);
++	}
++#endif
++	DWC_FREE(dwc_otg_hcd);
++}
++
++int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd, dwc_otg_core_if_t * core_if)
++{
++	struct device *dev = dwc_otg_hcd_to_dev(hcd);
++	int retval = 0;
++	int num_channels;
++	int i;
++	dwc_hc_t *channel;
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
++	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(hcd->lock);
++#else
++	hcd->lock = DWC_SPINLOCK_ALLOC();
++#endif
++        DWC_DEBUGPL(DBG_HCDV, "init of HCD %p given core_if %p\n",
++                    hcd, core_if);
++	if (!hcd->lock) {
++		DWC_ERROR("Could not allocate lock for pcd");
++		DWC_FREE(hcd);
++		retval = -DWC_E_NO_MEMORY;
++		goto out;
++	}
++	hcd->core_if = core_if;
++
++	/* Register the HCD CIL Callbacks */
++	dwc_otg_cil_register_hcd_callbacks(hcd->core_if,
++					   &hcd_cil_callbacks, hcd);
++
++	/* Initialize the non-periodic schedule. */
++	DWC_LIST_INIT(&hcd->non_periodic_sched_inactive);
++	DWC_LIST_INIT(&hcd->non_periodic_sched_active);
++
++	/* Initialize the periodic schedule. */
++	DWC_LIST_INIT(&hcd->periodic_sched_inactive);
++	DWC_LIST_INIT(&hcd->periodic_sched_ready);
++	DWC_LIST_INIT(&hcd->periodic_sched_assigned);
++	DWC_LIST_INIT(&hcd->periodic_sched_queued);
++	DWC_TAILQ_INIT(&hcd->completed_urb_list);
++	/*
++	 * Create a host channel descriptor for each host channel implemented
++	 * in the controller. Initialize the channel descriptor array.
++	 */
++	DWC_CIRCLEQ_INIT(&hcd->free_hc_list);
++	num_channels = hcd->core_if->core_params->host_channels;
++	DWC_MEMSET(hcd->hc_ptr_array, 0, sizeof(hcd->hc_ptr_array));
++	for (i = 0; i < num_channels; i++) {
++		channel = DWC_ALLOC(sizeof(dwc_hc_t));
++		if (channel == NULL) {
++			retval = -DWC_E_NO_MEMORY;
++			DWC_ERROR("%s: host channel allocation failed\n",
++				  __func__);
++			dwc_otg_hcd_free(hcd);
++			goto out;
++		}
++		channel->hc_num = i;
++		hcd->hc_ptr_array[i] = channel;
++#ifdef DEBUG
++		hcd->core_if->hc_xfer_timer[i] =
++		    DWC_TIMER_ALLOC("hc timer", hc_xfer_timeout,
++				    &hcd->core_if->hc_xfer_info[i]);
++#endif
++		DWC_DEBUGPL(DBG_HCDV, "HCD Added channel #%d, hc=%p\n", i,
++			    channel);
++	}
++
++	if (fiq_enable) {
++		hcd->fiq_state = DWC_ALLOC(sizeof(struct fiq_state) + (sizeof(struct fiq_channel_state) * num_channels));
++		if (!hcd->fiq_state) {
++			retval = -DWC_E_NO_MEMORY;
++			DWC_ERROR("%s: cannot allocate fiq_state structure\n", __func__);
++			dwc_otg_hcd_free(hcd);
++			goto out;
++		}
++		DWC_MEMSET(hcd->fiq_state, 0, (sizeof(struct fiq_state) + (sizeof(struct fiq_channel_state) * num_channels)));
++
++#ifdef CONFIG_ARM64
++		spin_lock_init(&hcd->fiq_state->lock);
++#endif
++
++		for (i = 0; i < num_channels; i++) {
++			hcd->fiq_state->channel[i].fsm = FIQ_PASSTHROUGH;
++		}
++		hcd->fiq_state->dummy_send = DWC_DMA_ALLOC_ATOMIC(dev, 16,
++							 &hcd->fiq_state->dummy_send_dma);
++
++		hcd->fiq_stack = DWC_ALLOC(sizeof(struct fiq_stack));
++		if (!hcd->fiq_stack) {
++			retval = -DWC_E_NO_MEMORY;
++			DWC_ERROR("%s: cannot allocate fiq_stack structure\n", __func__);
++			dwc_otg_hcd_free(hcd);
++			goto out;
++		}
++		hcd->fiq_stack->magic1 = 0xDEADBEEF;
++		hcd->fiq_stack->magic2 = 0xD00DFEED;
++		hcd->fiq_state->gintmsk_saved.d32 = ~0;
++		hcd->fiq_state->haintmsk_saved.b2.chint = ~0;
++
++		/* This bit is terrible and uses no API, but necessary. The FIQ has no concept of DMA pools
++		 * (and if it did, would be a lot slower). This allocates a chunk of memory (~9kiB for 8 host channels)
++		 * for use as transaction bounce buffers in a 2-D array. Our access into this chunk is done by some
++		 * moderately readable array casts.
++		 */
++		hcd->fiq_dmab = DWC_DMA_ALLOC(dev, (sizeof(struct fiq_dma_channel) * num_channels), &hcd->fiq_state->dma_base);
++		DWC_WARN("FIQ DMA bounce buffers: virt = %px dma = %pad len=%zu",
++				hcd->fiq_dmab, &hcd->fiq_state->dma_base,
++				sizeof(struct fiq_dma_channel) * num_channels);
++
++		DWC_MEMSET(hcd->fiq_dmab, 0x6b, 9024);
++
++		/* pointer for debug in fiq_print */
++		hcd->fiq_state->fiq_dmab = hcd->fiq_dmab;
++		if (fiq_fsm_enable) {
++			int i;
++			for (i=0; i < hcd->core_if->core_params->host_channels; i++) {
++				dwc_otg_cleanup_fiq_channel(hcd, i);
++			}
++			DWC_PRINTF("FIQ FSM acceleration enabled for :\n%s%s%s%s",
++				(fiq_fsm_mask & 0x1) ? "Non-periodic Split Transactions\n" : "",
++				(fiq_fsm_mask & 0x2) ? "Periodic Split Transactions\n" : "",
++				(fiq_fsm_mask & 0x4) ? "High-Speed Isochronous Endpoints\n" : "",
++				(fiq_fsm_mask & 0x8) ? "Interrupt/Control Split Transaction hack enabled\n" : "");
++		}
++	}
++
++	/* Initialize the Connection timeout timer. */
++	hcd->conn_timer = DWC_TIMER_ALLOC("Connection timer",
++					  dwc_otg_hcd_connect_timeout, 0);
++
++	printk(KERN_DEBUG "dwc_otg: Microframe scheduler %s\n", microframe_schedule ? "enabled":"disabled");
++	if (microframe_schedule)
++		init_hcd_usecs(hcd);
++
++	/* Initialize reset tasklet. */
++	hcd->reset_tasklet = DWC_TASK_ALLOC("reset_tasklet", reset_tasklet_func, hcd);
++
++	hcd->completion_tasklet = DWC_TASK_ALLOC("completion_tasklet",
++						completion_tasklet_func, hcd);
++#ifdef DWC_DEV_SRPCAP
++	if (hcd->core_if->power_down == 2) {
++		/* Initialize Power on timer for Host power up in case hibernation */
++		hcd->core_if->pwron_timer = DWC_TIMER_ALLOC("PWRON TIMER",
++									dwc_otg_hcd_power_up, core_if);
++	}
++#endif
++
++	/*
++	 * Allocate space for storing data on status transactions. Normally no
++	 * data is sent, but this space acts as a bit bucket. This must be
++	 * done after usb_add_hcd since that function allocates the DMA buffer
++	 * pool.
++	 */
++	if (hcd->core_if->dma_enable) {
++		hcd->status_buf =
++		    DWC_DMA_ALLOC(dev, DWC_OTG_HCD_STATUS_BUF_SIZE,
++				  &hcd->status_buf_dma);
++	} else {
++		hcd->status_buf = DWC_ALLOC(DWC_OTG_HCD_STATUS_BUF_SIZE);
++	}
++	if (!hcd->status_buf) {
++		retval = -DWC_E_NO_MEMORY;
++		DWC_ERROR("%s: status_buf allocation failed\n", __func__);
++		dwc_otg_hcd_free(hcd);
++		goto out;
++	}
++
++	hcd->otg_port = 1;
++	hcd->frame_list = NULL;
++	hcd->frame_list_dma = 0;
++	hcd->periodic_qh_count = 0;
++
++	DWC_MEMSET(hcd->hub_port, 0, sizeof(hcd->hub_port));
++#ifdef FIQ_DEBUG
++	DWC_MEMSET(hcd->hub_port_alloc, -1, sizeof(hcd->hub_port_alloc));
++#endif
++
++out:
++	return retval;
++}
++
++void dwc_otg_hcd_remove(dwc_otg_hcd_t * hcd)
++{
++	/* Turn off all host-specific interrupts. */
++	dwc_otg_disable_host_interrupts(hcd->core_if);
++
++	dwc_otg_hcd_free(hcd);
++}
++
++/**
++ * Initializes dynamic portions of the DWC_otg HCD state.
++ */
++static void dwc_otg_hcd_reinit(dwc_otg_hcd_t * hcd)
++{
++	int num_channels;
++	int i;
++	dwc_hc_t *channel;
++	dwc_hc_t *channel_tmp;
++
++	hcd->flags.d32 = 0;
++
++	hcd->non_periodic_qh_ptr = &hcd->non_periodic_sched_active;
++	if (!microframe_schedule) {
++		hcd->non_periodic_channels = 0;
++		hcd->periodic_channels = 0;
++	} else {
++		hcd->available_host_channels = hcd->core_if->core_params->host_channels;
++	}
++	/*
++	 * Put all channels in the free channel list and clean up channel
++	 * states.
++	 */
++	DWC_CIRCLEQ_FOREACH_SAFE(channel, channel_tmp,
++				 &hcd->free_hc_list, hc_list_entry) {
++		DWC_CIRCLEQ_REMOVE(&hcd->free_hc_list, channel, hc_list_entry);
++	}
++
++	num_channels = hcd->core_if->core_params->host_channels;
++	for (i = 0; i < num_channels; i++) {
++		channel = hcd->hc_ptr_array[i];
++		DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, channel,
++					hc_list_entry);
++		dwc_otg_hc_cleanup(hcd->core_if, channel);
++	}
++
++	/* Initialize the DWC core for host mode operation. */
++	dwc_otg_core_host_init(hcd->core_if);
++
++	/* Set core_if's lock pointer to the hcd->lock */
++	hcd->core_if->lock = hcd->lock;
++}
++
++/**
++ * Assigns transactions from a QTD to a free host channel and initializes the
++ * host channel to perform the transactions. The host channel is removed from
++ * the free list.
++ *
++ * @param hcd The HCD state structure.
++ * @param qh Transactions from the first QTD for this QH are selected and
++ * assigned to a free host channel.
++ */
++static void assign_and_init_hc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	dwc_hc_t *hc;
++	dwc_otg_qtd_t *qtd;
++	dwc_otg_hcd_urb_t *urb;
++	void* ptr = NULL;
++	uint16_t wLength;
++	uint32_t intr_enable;
++	unsigned long flags;
++	gintmsk_data_t gintmsk = { .d32 = 0, };
++	struct device *dev = dwc_otg_hcd_to_dev(hcd);
++
++	qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
++
++	urb = qtd->urb;
++
++	DWC_DEBUGPL(DBG_HCDV, "%s(%p,%p) - urb %x, actual_length %d\n", __func__, hcd, qh, (unsigned int)urb, urb->actual_length);
++
++	if (((urb->actual_length < 0) || (urb->actual_length > urb->length)) && !dwc_otg_hcd_is_pipe_in(&urb->pipe_info))
++		urb->actual_length = urb->length;
++
++
++	hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
++
++	/* Remove the host channel from the free list. */
++	DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
++
++	qh->channel = hc;
++
++	qtd->in_process = 1;
++
++	/*
++	 * Use usb_pipedevice to determine device address. This address is
++	 * 0 before the SET_ADDRESS command and the correct address afterward.
++	 */
++	hc->dev_addr = dwc_otg_hcd_get_dev_addr(&urb->pipe_info);
++	hc->ep_num = dwc_otg_hcd_get_ep_num(&urb->pipe_info);
++	hc->speed = qh->dev_speed;
++	hc->max_packet = dwc_max_packet(qh->maxp);
++
++	hc->xfer_started = 0;
++	hc->halt_status = DWC_OTG_HC_XFER_NO_HALT_STATUS;
++	hc->error_state = (qtd->error_count > 0);
++	hc->halt_on_queue = 0;
++	hc->halt_pending = 0;
++	hc->requests = 0;
++
++	/*
++	 * The following values may be modified in the transfer type section
++	 * below. The xfer_len value may be reduced when the transfer is
++	 * started to accommodate the max widths of the XferSize and PktCnt
++	 * fields in the HCTSIZn register.
++	 */
++
++	hc->ep_is_in = (dwc_otg_hcd_is_pipe_in(&urb->pipe_info) != 0);
++	if (hc->ep_is_in) {
++		hc->do_ping = 0;
++	} else {
++		hc->do_ping = qh->ping_state;
++	}
++
++	hc->data_pid_start = qh->data_toggle;
++	hc->multi_count = 1;
++
++	if (hcd->core_if->dma_enable) {
++		hc->xfer_buff = (uint8_t *) urb->dma + urb->actual_length;
++
++		/* For non-dword aligned case */
++		if (((unsigned long)hc->xfer_buff & 0x3)
++		    && !hcd->core_if->dma_desc_enable) {
++			ptr = (uint8_t *) urb->buf + urb->actual_length;
++		}
++	} else {
++		hc->xfer_buff = (uint8_t *) urb->buf + urb->actual_length;
++	}
++	hc->xfer_len = urb->length - urb->actual_length;
++	hc->xfer_count = 0;
++
++	/*
++	 * Set the split attributes
++	 */
++	hc->do_split = 0;
++	if (qh->do_split) {
++		uint32_t hub_addr, port_addr;
++		hc->do_split = 1;
++		hc->start_pkt_count = 1;
++		hc->xact_pos = qtd->isoc_split_pos;
++		/* We don't need to do complete splits anymore */
++//		if(fiq_fsm_enable)
++		if (0)
++			hc->complete_split = qtd->complete_split = 0;
++		else
++			hc->complete_split = qtd->complete_split;
++
++		hcd->fops->hub_info(hcd, urb->priv, &hub_addr, &port_addr);
++		hc->hub_addr = (uint8_t) hub_addr;
++		hc->port_addr = (uint8_t) port_addr;
++	}
++
++	switch (dwc_otg_hcd_get_pipe_type(&urb->pipe_info)) {
++	case UE_CONTROL:
++		hc->ep_type = DWC_OTG_EP_TYPE_CONTROL;
++		switch (qtd->control_phase) {
++		case DWC_OTG_CONTROL_SETUP:
++			DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction\n");
++			hc->do_ping = 0;
++			hc->ep_is_in = 0;
++			hc->data_pid_start = DWC_OTG_HC_PID_SETUP;
++			if (hcd->core_if->dma_enable) {
++				hc->xfer_buff = (uint8_t *) urb->setup_dma;
++			} else {
++				hc->xfer_buff = (uint8_t *) urb->setup_packet;
++			}
++			hc->xfer_len = 8;
++			ptr = NULL;
++			break;
++		case DWC_OTG_CONTROL_DATA:
++			DWC_DEBUGPL(DBG_HCDV, "  Control data transaction\n");
++			/*
++			 * Hardware bug: small IN packets with length < 4
++			 * cause a 4-byte write to memory. We can only catch
++			 * the case where we know a short packet is going to be
++			 * returned in a control transfer, as the length is
++			 * specified in the setup packet. This is only an issue
++			 * for drivers that insist on packing a device's various
++			 * properties into a struct and querying them one at a
++			 * time (uvcvideo).
++			 * Force the use of align_buf so that the subsequent
++			 * memcpy puts the right number of bytes in the URB's
++			 * buffer.
++			 */
++			wLength = ((uint16_t *)urb->setup_packet)[3];
++			if (hc->ep_is_in && wLength < 4)
++				ptr = hc->xfer_buff;
++
++			hc->data_pid_start = qtd->data_toggle;
++			break;
++		case DWC_OTG_CONTROL_STATUS:
++			/*
++			 * Direction is opposite of data direction or IN if no
++			 * data.
++			 */
++			DWC_DEBUGPL(DBG_HCDV, "  Control status transaction\n");
++			if (urb->length == 0) {
++				hc->ep_is_in = 1;
++			} else {
++				hc->ep_is_in =
++				    dwc_otg_hcd_is_pipe_out(&urb->pipe_info);
++			}
++			if (hc->ep_is_in) {
++				hc->do_ping = 0;
++			}
++
++			hc->data_pid_start = DWC_OTG_HC_PID_DATA1;
++
++			hc->xfer_len = 0;
++			if (hcd->core_if->dma_enable) {
++				hc->xfer_buff = (uint8_t *) hcd->status_buf_dma;
++			} else {
++				hc->xfer_buff = (uint8_t *) hcd->status_buf;
++			}
++			ptr = NULL;
++			break;
++		}
++		break;
++	case UE_BULK:
++		hc->ep_type = DWC_OTG_EP_TYPE_BULK;
++		break;
++	case UE_INTERRUPT:
++		hc->ep_type = DWC_OTG_EP_TYPE_INTR;
++		break;
++	case UE_ISOCHRONOUS:
++		{
++			struct dwc_otg_hcd_iso_packet_desc *frame_desc;
++
++			hc->ep_type = DWC_OTG_EP_TYPE_ISOC;
++
++			if (hcd->core_if->dma_desc_enable)
++				break;
++
++			frame_desc = &urb->iso_descs[qtd->isoc_frame_index];
++
++			frame_desc->status = 0;
++
++			if (hcd->core_if->dma_enable) {
++				hc->xfer_buff = (uint8_t *) urb->dma;
++			} else {
++				hc->xfer_buff = (uint8_t *) urb->buf;
++			}
++			hc->xfer_buff +=
++			    frame_desc->offset + qtd->isoc_split_offset;
++			hc->xfer_len =
++			    frame_desc->length - qtd->isoc_split_offset;
++
++			/* For non-dword aligned buffers */
++			if (((unsigned long)hc->xfer_buff & 0x3)
++			    && hcd->core_if->dma_enable) {
++				ptr =
++				    (uint8_t *) urb->buf + frame_desc->offset +
++				    qtd->isoc_split_offset;
++			} else
++				ptr = NULL;
++
++			if (hc->xact_pos == DWC_HCSPLIT_XACTPOS_ALL) {
++				if (hc->xfer_len <= 188) {
++					hc->xact_pos = DWC_HCSPLIT_XACTPOS_ALL;
++				} else {
++					hc->xact_pos =
++					    DWC_HCSPLIT_XACTPOS_BEGIN;
++				}
++			}
++		}
++		break;
++	}
++	/* non DWORD-aligned buffer case */
++	if (ptr) {
++		uint32_t buf_size;
++		if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
++			buf_size = hcd->core_if->core_params->max_transfer_size;
++		} else {
++			buf_size = 4096;
++		}
++		if (!qh->dw_align_buf) {
++			qh->dw_align_buf = DWC_DMA_ALLOC_ATOMIC(dev, buf_size,
++							 &qh->dw_align_buf_dma);
++			if (!qh->dw_align_buf) {
++				DWC_ERROR
++				    ("%s: Failed to allocate memory to handle "
++				     "non-dword aligned buffer case\n",
++				     __func__);
++				return;
++			}
++		}
++		if (!hc->ep_is_in) {
++			dwc_memcpy(qh->dw_align_buf, ptr, hc->xfer_len);
++		}
++		hc->align_buff = qh->dw_align_buf_dma;
++	} else {
++		hc->align_buff = 0;
++	}
++
++	if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
++	    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++		/*
++		 * This value may be modified when the transfer is started to
++		 * reflect the actual transfer length.
++		 */
++		hc->multi_count = dwc_hb_mult(qh->maxp);
++	}
++
++	if (hcd->core_if->dma_desc_enable)
++		hc->desc_list_addr = qh->desc_list_dma;
++
++	dwc_otg_hc_init(hcd->core_if, hc);
++
++	local_irq_save(flags);
++
++	if (fiq_enable) {
++		local_fiq_disable();
++		fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++	}
++
++	/* Enable the top level host channel interrupt. */
++	intr_enable = (1 << hc->hc_num);
++	DWC_MODIFY_REG32(&hcd->core_if->host_if->host_global_regs->haintmsk, 0, intr_enable);
++
++	/* Make sure host channel interrupts are enabled. */
++	gintmsk.b.hcintr = 1;
++	DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
++
++	if (fiq_enable) {
++		fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++		local_fiq_enable();
++	}
++
++	local_irq_restore(flags);
++	hc->qh = qh;
++}
++
++
++/**
++ * fiq_fsm_transaction_suitable() - Test a QH for compatibility with the FIQ
++ * @hcd:	Pointer to the dwc_otg_hcd struct
++ * @qh:	pointer to the endpoint's queue head
++ *
++ * Transaction start/end control flow is grafted onto the existing dwc_otg
++ * mechanisms, to avoid spaghettifying the functions more than they already are.
++ * This function's eligibility check is altered by debug parameter.
++ *
++ * Returns: 0 for unsuitable, 1 implies the FIQ can be enabled for this transaction.
++ */
++
++int fiq_fsm_transaction_suitable(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
++{
++	if (qh->do_split) {
++		switch (qh->ep_type) {
++		case UE_CONTROL:
++		case UE_BULK:
++			if (fiq_fsm_mask & (1 << 0))
++				return 1;
++			break;
++		case UE_INTERRUPT:
++		case UE_ISOCHRONOUS:
++			if (fiq_fsm_mask & (1 << 1))
++				return 1;
++			break;
++		default:
++			break;
++		}
++	} else if (qh->ep_type == UE_ISOCHRONOUS) {
++		if (fiq_fsm_mask & (1 << 2)) {
++			/* ISOCH support. We test for compatibility:
++			 * - DWORD aligned buffers
++			 * - Must be at least 2 transfers (otherwise pointless to use the FIQ)
++			 * If yes, then the fsm enqueue function will handle the state machine setup.
++			 */
++			dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
++			dwc_otg_hcd_urb_t *urb = qtd->urb;
++			dwc_dma_t ptr;
++			int i;
++
++			if (urb->packet_count < 2)
++				return 0;
++			for (i = 0; i < urb->packet_count; i++) {
++				ptr = urb->dma + urb->iso_descs[i].offset;
++				if (ptr & 0x3)
++					return 0;
++			}
++			return 1;
++		}
++	}
++	return 0;
++}
++
++/**
++ * fiq_fsm_setup_periodic_dma() - Set up DMA bounce buffers
++ * @hcd: Pointer to the dwc_otg_hcd struct
++ * @qh: Pointer to the endpoint's queue head
++ *
++ * Periodic split transactions are transmitted modulo 188 bytes.
++ * This necessitates slicing data up into buckets for isochronous out
++ * and fixing up the DMA address for all IN transfers.
++ *
++ * Returns 1 if the DMA bounce buffers have been used, 0 if the default
++ * HC buffer has been used.
++ */
++int fiq_fsm_setup_periodic_dma(dwc_otg_hcd_t *hcd, struct fiq_channel_state *st, dwc_otg_qh_t *qh)
++ {
++	int frame_length, i = 0;
++	uint8_t *ptr = NULL;
++	dwc_hc_t *hc = qh->channel;
++	struct fiq_dma_blob *blob;
++	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
++
++	for (i = 0; i < 6; i++) {
++		st->dma_info.slot_len[i] = 255;
++	}
++	st->dma_info.index = 0;
++	i = 0;
++	if (hc->ep_is_in) {
++		/*
++		 * Set dma_regs to bounce buffer. FIQ will update the
++		 * state depending on transaction progress.
++		 * Pointer arithmetic on hcd->fiq_state->dma_base (a dma_addr_t)
++		 * to point it to the correct offset in the allocated buffers.
++		 */
++		blob = (struct fiq_dma_blob *) hcd->fiq_state->dma_base;
++		st->hcdma_copy.d32 = (dma_addr_t) blob->channel[hc->hc_num].index[0].buf;
++
++		/* Calculate the max number of CSPLITS such that the FIQ can time out
++		 * a transaction if it fails.
++		 */
++		frame_length = st->hcchar_copy.b.mps;
++		do {
++			i++;
++			frame_length -= 188;
++		} while (frame_length >= 0);
++		st->nrpackets = i;
++		return 1;
++	} else {
++		if (qh->ep_type == UE_ISOCHRONOUS) {
++
++			dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
++
++			frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
++			frame_length = frame_desc->length;
++
++			/* Virtual address for bounce buffers */
++			blob = hcd->fiq_dmab;
++
++			ptr = qtd->urb->buf + frame_desc->offset;
++			if (frame_length == 0) {
++				/*
++				 * for isochronous transactions, we must still transmit a packet
++				 * even if the length is zero.
++				 */
++				st->dma_info.slot_len[0] = 0;
++				st->nrpackets = 1;
++			} else {
++				do {
++					if (frame_length <= 188) {
++						dwc_memcpy(&blob->channel[hc->hc_num].index[i].buf[0], ptr, frame_length);
++						st->dma_info.slot_len[i] = frame_length;
++						ptr += frame_length;
++					} else {
++						dwc_memcpy(&blob->channel[hc->hc_num].index[i].buf[0], ptr, 188);
++						st->dma_info.slot_len[i] = 188;
++						ptr += 188;
++					}
++					i++;
++					frame_length -= 188;
++				} while (frame_length > 0);
++				st->nrpackets = i;
++			}
++			ptr = qtd->urb->buf + frame_desc->offset;
++			/*
++			 * Point the HC at the DMA address of the bounce buffers
++			 *
++			 * Pointer arithmetic on hcd->fiq_state->dma_base (a
++			 * dma_addr_t) to point it to the correct offset in the
++			 * allocated buffers.
++			 */
++			blob = (struct fiq_dma_blob *) hcd->fiq_state->dma_base;
++			st->hcdma_copy.d32 = (dma_addr_t) blob->channel[hc->hc_num].index[0].buf;
++
++			/* fixup xfersize to the actual packet size */
++			st->hctsiz_copy.b.pid = 0;
++			st->hctsiz_copy.b.xfersize = st->dma_info.slot_len[0];
++			return 1;
++		} else {
++			/* For interrupt, single OUT packet required, goes in the SSPLIT from hc_buff. */
++			return 0;
++		}
++	}
++}
++
++/**
++ * fiq_fsm_np_tt_contended() - Avoid performing contended non-periodic transfers
++ * @hcd: Pointer to the dwc_otg_hcd struct
++ * @qh: Pointer to the endpoint's queue head
++ *
++ * Certain hub chips don't differentiate between IN and OUT non-periodic pipes
++ * with the same endpoint number. If transfers get completed out of order
++ * (disregarding the direction token) then the hub can lock up
++ * or return erroneous responses.
++ *
++ * Returns 1 if initiating the transfer would cause contention, 0 otherwise.
++ */
++int fiq_fsm_np_tt_contended(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
++{
++	int i;
++	struct fiq_channel_state *st;
++	int dev_addr = qh->channel->dev_addr;
++	int ep_num = qh->channel->ep_num;
++	for (i = 0; i < hcd->core_if->core_params->host_channels; i++) {
++		if (i == qh->channel->hc_num)
++			continue;
++		st = &hcd->fiq_state->channel[i];
++		switch (st->fsm) {
++		case FIQ_NP_SSPLIT_STARTED:
++		case FIQ_NP_SSPLIT_RETRY:
++		case FIQ_NP_SSPLIT_PENDING:
++		case FIQ_NP_OUT_CSPLIT_RETRY:
++		case FIQ_NP_IN_CSPLIT_RETRY:
++			if (st->hcchar_copy.b.devaddr == dev_addr &&
++				st->hcchar_copy.b.epnum == ep_num)
++				return 1;
++			break;
++		default:
++			break;
++		}
++	}
++	return 0;
++}
++
++/*
++ * Pushing a periodic request into the queue near the EOF1 point
++ * in a microframe causes erroneous behaviour (frmovrun) interrupt.
++ * Usually, the request goes out on the bus causing a transfer but
++ * the core does not transfer the data to memory.
++ * This guard interval (in number of 60MHz clocks) is required which
++ * must cater for CPU latency between reading the value and enabling
++ * the channel.
++ */
++#define PERIODIC_FRREM_BACKOFF 1000
++
++int fiq_fsm_queue_isoc_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
++{
++	dwc_hc_t *hc = qh->channel;
++	dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
++	dwc_otg_qtd_t *qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
++	int frame;
++	struct fiq_channel_state *st = &hcd->fiq_state->channel[hc->hc_num];
++	int xfer_len, nrpackets;
++	hcdma_data_t hcdma;
++	hfnum_data_t hfnum;
++
++	if (st->fsm != FIQ_PASSTHROUGH)
++		return 0;
++
++	st->nr_errors = 0;
++
++	st->hcchar_copy.d32 = 0;
++	st->hcchar_copy.b.mps = hc->max_packet;
++	st->hcchar_copy.b.epdir = hc->ep_is_in;
++	st->hcchar_copy.b.devaddr = hc->dev_addr;
++	st->hcchar_copy.b.epnum = hc->ep_num;
++	st->hcchar_copy.b.eptype = hc->ep_type;
++
++	st->hcintmsk_copy.b.chhltd = 1;
++
++	frame = dwc_otg_hcd_get_frame_number(hcd);
++	st->hcchar_copy.b.oddfrm = (frame & 0x1) ? 0 : 1;
++
++	st->hcchar_copy.b.lspddev = 0;
++	/* Enable the channel later as a final register write. */
++
++	st->hcsplt_copy.d32 = 0;
++
++	st->hs_isoc_info.iso_desc = (struct dwc_otg_hcd_iso_packet_desc *) &qtd->urb->iso_descs;
++	st->hs_isoc_info.nrframes = qtd->urb->packet_count;
++	/* grab the next DMA address offset from the array */
++	st->hcdma_copy.d32 = qtd->urb->dma;
++	hcdma.d32 = st->hcdma_copy.d32 + st->hs_isoc_info.iso_desc[0].offset;
++
++	/* We need to set multi_count. This is a bit tricky - has to be set per-transaction as
++	 * the core needs to be told to send the correct number. Caution: for IN transfers,
++	 * this is always set to the maximum size of the endpoint. */
++	xfer_len = st->hs_isoc_info.iso_desc[0].length;
++	nrpackets = (xfer_len + st->hcchar_copy.b.mps - 1) / st->hcchar_copy.b.mps;
++	if (nrpackets == 0)
++		nrpackets = 1;
++	st->hcchar_copy.b.multicnt = nrpackets;
++	st->hctsiz_copy.b.pktcnt = nrpackets;
++
++	/* Initial PID also needs to be set */
++	if (st->hcchar_copy.b.epdir == 0) {
++		st->hctsiz_copy.b.xfersize = xfer_len;
++		switch (st->hcchar_copy.b.multicnt) {
++		case 1:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
++			break;
++		case 2:
++		case 3:
++			st->hctsiz_copy.b.pid = DWC_PID_MDATA;
++			break;
++		}
++
++	} else {
++		st->hctsiz_copy.b.xfersize = nrpackets * st->hcchar_copy.b.mps;
++		switch (st->hcchar_copy.b.multicnt) {
++		case 1:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA0;
++			break;
++		case 2:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA1;
++			break;
++		case 3:
++			st->hctsiz_copy.b.pid = DWC_PID_DATA2;
++			break;
++		}
++	}
++
++	st->hs_isoc_info.stride = qh->interval;
++	st->uframe_sleeps = 0;
++
++	fiq_print(FIQDBG_INT, hcd->fiq_state, "FSMQ  %01d ", hc->hc_num);
++	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcchar_copy.d32);
++	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hctsiz_copy.d32);
++	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcdma_copy.d32);
++	hfnum.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
++	local_fiq_disable();
++	fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++	DWC_WRITE_REG32(&hc_regs->hctsiz, st->hctsiz_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hcsplt, st->hcsplt_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hcdma, st->hcdma_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, st->hcintmsk_copy.d32);
++	if (hfnum.b.frrem < PERIODIC_FRREM_BACKOFF) {
++		/* Prevent queueing near EOF1. Bad things happen if a periodic
++		 * split transaction is queued very close to EOF. SOF interrupt handler
++		 * will wake this channel at the next interrupt.
++		 */
++		st->fsm = FIQ_HS_ISOC_SLEEPING;
++		st->uframe_sleeps = 1;
++	} else {
++		st->fsm = FIQ_HS_ISOC_TURBO;
++		st->hcchar_copy.b.chen = 1;
++		DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
++	}
++	mb();
++	st->hcchar_copy.b.chen = 0;
++	fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++	local_fiq_enable();
++	return 0;
++}
++
++
++/**
++ * fiq_fsm_queue_split_transaction() - Set up a host channel and FIQ state
++ * @hcd: Pointer to the dwc_otg_hcd struct
++ * @qh: Pointer to the endpoint's queue head
++ *
++ * This overrides the dwc_otg driver's normal method of queueing a transaction.
++ * Called from dwc_otg_hcd_queue_transactions(), this performs specific setup
++ * for the nominated host channel.
++ *
++ * For periodic transfers, it also peeks at the FIQ state to see if an immediate
++ * start is possible. If not, then the FIQ is left to start the transfer.
++ */
++int fiq_fsm_queue_split_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
++{
++	int start_immediate = 1, i;
++	hfnum_data_t hfnum;
++	dwc_hc_t *hc = qh->channel;
++	dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[hc->hc_num];
++	/* Program HC registers, setup FIQ_state, examine FIQ if periodic, start transfer (not if uframe 5) */
++	int hub_addr, port_addr, frame, uframe;
++	struct fiq_channel_state *st = &hcd->fiq_state->channel[hc->hc_num];
++
++	/*
++	 * Non-periodic channel assignments stay in the non_periodic_active queue.
++	 * Therefore we get repeatedly called until the FIQ's done processing this channel.
++	 */
++	if (qh->channel->xfer_started == 1)
++		return 0;
++
++	if (st->fsm != FIQ_PASSTHROUGH) {
++		pr_warn_ratelimited("%s:%d: Queue called for an active channel\n", __func__, __LINE__);
++		return 0;
++	}
++
++	qh->channel->xfer_started = 1;
++
++	st->nr_errors = 0;
++
++	st->hcchar_copy.d32 = 0;
++	st->hcchar_copy.b.mps = min_t(uint32_t, hc->xfer_len, hc->max_packet);
++	st->hcchar_copy.b.epdir = hc->ep_is_in;
++	st->hcchar_copy.b.devaddr = hc->dev_addr;
++	st->hcchar_copy.b.epnum = hc->ep_num;
++	st->hcchar_copy.b.eptype = hc->ep_type;
++	if (hc->ep_type & 0x1) {
++		if (hc->ep_is_in)
++			st->hcchar_copy.b.multicnt = 3;
++		else
++			/* Docs say set this to 1, but driver sets to 0! */
++			st->hcchar_copy.b.multicnt = 0;
++	} else {
++		st->hcchar_copy.b.multicnt = 1;
++		st->hcchar_copy.b.oddfrm = 0;
++	}
++	st->hcchar_copy.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW) ? 1 : 0;
++	/* Enable the channel later as a final register write. */
++
++	st->hcsplt_copy.d32 = 0;
++	if(qh->do_split) {
++		hcd->fops->hub_info(hcd, DWC_CIRCLEQ_FIRST(&qh->qtd_list)->urb->priv, &hub_addr, &port_addr);
++		st->hcsplt_copy.b.compsplt = 0;
++		st->hcsplt_copy.b.spltena = 1;
++		// XACTPOS is for isoc-out only but needs initialising anyway.
++		st->hcsplt_copy.b.xactpos = ISOC_XACTPOS_ALL;
++		if((qh->ep_type == DWC_OTG_EP_TYPE_ISOC) && (!qh->ep_is_in)) {
++			/* For packetsize 0 < L < 188, ISOC_XACTPOS_ALL.
++			 * for longer than this, ISOC_XACTPOS_BEGIN and the FIQ
++			 * will update as necessary.
++			 */
++			if (hc->xfer_len > 188) {
++				st->hcsplt_copy.b.xactpos = ISOC_XACTPOS_BEGIN;
++			}
++		}
++		st->hcsplt_copy.b.hubaddr = (uint8_t) hub_addr;
++		st->hcsplt_copy.b.prtaddr = (uint8_t) port_addr;
++		st->hub_addr = hub_addr;
++		st->port_addr = port_addr;
++	}
++
++	st->hctsiz_copy.d32 = 0;
++	st->hctsiz_copy.b.dopng = 0;
++	st->hctsiz_copy.b.pid = hc->data_pid_start;
++
++	if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
++		hc->xfer_len = min_t(uint32_t, hc->xfer_len, hc->max_packet);
++	} else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
++		hc->xfer_len = 188;
++	}
++	st->hctsiz_copy.b.xfersize = hc->xfer_len;
++
++	st->hctsiz_copy.b.pktcnt = 1;
++
++	if (hc->ep_type & 0x1) {
++		/*
++		 * For potentially multi-packet transfers, must use the DMA bounce buffers. For IN transfers,
++		 * the DMA address is the address of the first 188byte slot buffer in the bounce buffer array.
++		 * For multi-packet OUT transfers, we need to copy the data into the bounce buffer array so the FIQ can punt
++		 * the right address out as necessary. hc->xfer_buff and hc->xfer_len have already been set
++		 * in assign_and_init_hc(), but this is for the eventual transaction completion only. The FIQ
++		 * must not touch internal driver state.
++		 */
++		if(!fiq_fsm_setup_periodic_dma(hcd, st, qh)) {
++			if (hc->align_buff) {
++				st->hcdma_copy.d32 = hc->align_buff;
++			} else {
++				st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
++			}
++		}
++	} else {
++		if (hc->align_buff) {
++			st->hcdma_copy.d32 = hc->align_buff;
++		} else {
++			st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
++		}
++	}
++	/* The FIQ depends upon no other interrupts being enabled except channel halt.
++	 * Fixup channel interrupt mask. */
++	st->hcintmsk_copy.d32 = 0;
++	st->hcintmsk_copy.b.chhltd = 1;
++	st->hcintmsk_copy.b.ahberr = 1;
++
++	/* Hack courtesy of FreeBSD: apparently forcing Interrupt Split transactions
++	 * as Control puts the transfer into the non-periodic request queue and the
++	 * non-periodic handler in the hub. Makes things lots easier.
++	 */
++	if ((fiq_fsm_mask & 0x8) && hc->ep_type == UE_INTERRUPT) {
++		st->hcchar_copy.b.multicnt = 0;
++		st->hcchar_copy.b.oddfrm = 0;
++		st->hcchar_copy.b.eptype = UE_CONTROL;
++		if (hc->align_buff) {
++			st->hcdma_copy.d32 = hc->align_buff;
++		} else {
++			st->hcdma_copy.d32 = ((unsigned long) hc->xfer_buff & 0xFFFFFFFF);
++		}
++	}
++	DWC_WRITE_REG32(&hc_regs->hcdma, st->hcdma_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hctsiz, st->hctsiz_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hcsplt, st->hcsplt_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, st->hcintmsk_copy.d32);
++
++	local_fiq_disable();
++	fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++
++	if (hc->ep_type & 0x1) {
++		hfnum.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
++		frame = (hfnum.b.frnum & ~0x7) >> 3;
++		uframe = hfnum.b.frnum & 0x7;
++		if (hfnum.b.frrem < PERIODIC_FRREM_BACKOFF) {
++			/* Prevent queueing near EOF1. Bad things happen if a periodic
++			 * split transaction is queued very close to EOF.
++			 */
++			start_immediate = 0;
++		} else if (uframe == 5) {
++			start_immediate = 0;
++		} else if (hc->ep_type == UE_ISOCHRONOUS && !hc->ep_is_in) {
++			start_immediate = 0;
++		} else if (hc->ep_is_in && fiq_fsm_too_late(hcd->fiq_state, hc->hc_num)) {
++			start_immediate = 0;
++		} else {
++			/* Search through all host channels to determine if a transaction
++			 * is currently in progress */
++			for (i = 0; i < hcd->core_if->core_params->host_channels; i++) {
++				if (i == hc->hc_num || hcd->fiq_state->channel[i].fsm == FIQ_PASSTHROUGH)
++					continue;
++				switch (hcd->fiq_state->channel[i].fsm) {
++				/* TT is reserved for channels that are in the middle of a periodic
++				 * split transaction.
++				 */
++				case FIQ_PER_SSPLIT_STARTED:
++				case FIQ_PER_CSPLIT_WAIT:
++				case FIQ_PER_CSPLIT_NYET1:
++				case FIQ_PER_CSPLIT_POLL:
++				case FIQ_PER_ISO_OUT_ACTIVE:
++				case FIQ_PER_ISO_OUT_LAST:
++					if (hcd->fiq_state->channel[i].hub_addr == hub_addr &&
++							hcd->fiq_state->channel[i].port_addr == port_addr) {
++						start_immediate = 0;
++					}
++					break;
++				default:
++					break;
++				}
++				if (!start_immediate)
++					break;
++			}
++		}
++	}
++	if ((fiq_fsm_mask & 0x8) && hc->ep_type == UE_INTERRUPT)
++		start_immediate = 1;
++
++	fiq_print(FIQDBG_INT, hcd->fiq_state, "FSMQ %01d %01d", hc->hc_num, start_immediate);
++	fiq_print(FIQDBG_INT, hcd->fiq_state, "%08d", hfnum.b.frrem);
++	//fiq_print(FIQDBG_INT, hcd->fiq_state, "H:%02dP:%02d", hub_addr, port_addr);
++	//fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hctsiz_copy.d32);
++	//fiq_print(FIQDBG_INT, hcd->fiq_state, "%08x", st->hcdma_copy.d32);
++	switch (hc->ep_type) {
++		case UE_CONTROL:
++		case UE_BULK:
++			if (fiq_fsm_np_tt_contended(hcd, qh)) {
++				st->fsm = FIQ_NP_SSPLIT_PENDING;
++				start_immediate = 0;
++			} else {
++				st->fsm = FIQ_NP_SSPLIT_STARTED;
++			}
++			break;
++		case UE_ISOCHRONOUS:
++			if (hc->ep_is_in) {
++				if (start_immediate) {
++					st->fsm = FIQ_PER_SSPLIT_STARTED;
++				} else {
++					st->fsm = FIQ_PER_SSPLIT_QUEUED;
++				}
++			} else {
++				if (start_immediate) {
++					/* Single-isoc OUT packets don't require FIQ involvement */
++					if (st->nrpackets == 1) {
++						st->fsm = FIQ_PER_ISO_OUT_LAST;
++					} else {
++						st->fsm = FIQ_PER_ISO_OUT_ACTIVE;
++					}
++				} else {
++					st->fsm = FIQ_PER_ISO_OUT_PENDING;
++				}
++			}
++			break;
++		case UE_INTERRUPT:
++			if (fiq_fsm_mask & 0x8) {
++				if (fiq_fsm_np_tt_contended(hcd, qh)) {
++					st->fsm = FIQ_NP_SSPLIT_PENDING;
++					start_immediate = 0;
++				} else {
++					st->fsm = FIQ_NP_SSPLIT_STARTED;
++				}
++			} else if (start_immediate) {
++					st->fsm = FIQ_PER_SSPLIT_STARTED;
++			} else {
++				st->fsm = FIQ_PER_SSPLIT_QUEUED;
++			}
++		default:
++			break;
++	}
++	if (start_immediate) {
++		/* Set the oddfrm bit as close as possible to actual queueing */
++		frame = dwc_otg_hcd_get_frame_number(hcd);
++		st->expected_uframe = (frame + 1) & 0x3FFF;
++		st->hcchar_copy.b.oddfrm = (frame & 0x1) ? 0 : 1;
++		st->hcchar_copy.b.chen = 1;
++		DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
++	}
++	mb();
++	fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++	local_fiq_enable();
++	return 0;
++}
++
++
++/**
++ * This function selects transactions from the HCD transfer schedule and
++ * assigns them to available host channels. It is called from HCD interrupt
++ * handler functions.
++ *
++ * @param hcd The HCD state structure.
++ *
++ * @return The types of new transactions that were assigned to host channels.
++ */
++dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t * hcd)
++{
++	dwc_list_link_t *qh_ptr;
++	dwc_otg_qh_t *qh;
++	int num_channels;
++	dwc_otg_transaction_type_e ret_val = DWC_OTG_TRANSACTION_NONE;
++
++#ifdef DEBUG_HOST_CHANNELS
++	last_sel_trans_num_per_scheduled = 0;
++	last_sel_trans_num_nonper_scheduled = 0;
++	last_sel_trans_num_avail_hc_at_start = hcd->available_host_channels;
++#endif /* DEBUG_HOST_CHANNELS */
++
++	/* Process entries in the periodic ready list. */
++	qh_ptr = DWC_LIST_FIRST(&hcd->periodic_sched_ready);
++
++	while (qh_ptr != &hcd->periodic_sched_ready &&
++	       !DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
++
++		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
++
++		if (microframe_schedule) {
++			// Make sure we leave one channel for non periodic transactions.
++			if (hcd->available_host_channels <= 1) {
++				break;
++			}
++			hcd->available_host_channels--;
++#ifdef DEBUG_HOST_CHANNELS
++			last_sel_trans_num_per_scheduled++;
++#endif /* DEBUG_HOST_CHANNELS */
++		}
++		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
++		assign_and_init_hc(hcd, qh);
++
++		/*
++		 * Move the QH from the periodic ready schedule to the
++		 * periodic assigned schedule.
++		 */
++		qh_ptr = DWC_LIST_NEXT(qh_ptr);
++		DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
++				   &qh->qh_list_entry);
++	}
++
++	/*
++	 * Process entries in the inactive portion of the non-periodic
++	 * schedule. Some free host channels may not be used if they are
++	 * reserved for periodic transfers.
++	 */
++	qh_ptr = hcd->non_periodic_sched_inactive.next;
++	num_channels = hcd->core_if->core_params->host_channels;
++	while (qh_ptr != &hcd->non_periodic_sched_inactive &&
++	       (microframe_schedule || hcd->non_periodic_channels <
++		num_channels - hcd->periodic_channels) &&
++	       !DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
++
++		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
++		/*
++		 * Check to see if this is a NAK'd retransmit, in which case ignore for retransmission
++		 * we hold off on bulk retransmissions to reduce NAK interrupt overhead for full-speed
++		 * cheeky devices that just hold off using NAKs
++		 */
++		if (fiq_enable && nak_holdoff && qh->do_split) {
++			if (qh->nak_frame != 0xffff) {
++				uint16_t next_frame = dwc_frame_num_inc(qh->nak_frame, (qh->ep_type == UE_BULK) ? nak_holdoff : 8);
++				uint16_t frame = dwc_otg_hcd_get_frame_number(hcd);
++				if (dwc_frame_num_le(frame, next_frame)) {
++					if(dwc_frame_num_le(next_frame, hcd->fiq_state->next_sched_frame)) {
++						hcd->fiq_state->next_sched_frame = next_frame;
++					}
++					qh_ptr = DWC_LIST_NEXT(qh_ptr);
++					continue;
++				} else {
++					qh->nak_frame = 0xFFFF;
++				}
++			}
++		}
++
++		if (microframe_schedule) {
++				if (hcd->available_host_channels < 1) {
++					break;
++				}
++				hcd->available_host_channels--;
++#ifdef DEBUG_HOST_CHANNELS
++				last_sel_trans_num_nonper_scheduled++;
++#endif /* DEBUG_HOST_CHANNELS */
++		}
++
++		assign_and_init_hc(hcd, qh);
++
++		/*
++		 * Move the QH from the non-periodic inactive schedule to the
++		 * non-periodic active schedule.
++		 */
++		qh_ptr = DWC_LIST_NEXT(qh_ptr);
++		DWC_LIST_MOVE_HEAD(&hcd->non_periodic_sched_active,
++				   &qh->qh_list_entry);
++
++		if (!microframe_schedule)
++			hcd->non_periodic_channels++;
++	}
++	/* we moved a non-periodic QH to the active schedule. If the inactive queue is empty,
++	 * stop the FIQ from kicking us. We could potentially still have elements here if we
++	 * ran out of host channels.
++	 */
++	if (fiq_enable) {
++		if (DWC_LIST_EMPTY(&hcd->non_periodic_sched_inactive)) {
++			hcd->fiq_state->kick_np_queues = 0;
++		} else {
++			/* For each entry remaining in the NP inactive queue,
++			* if this a NAK'd retransmit then don't set the kick flag.
++			*/
++			if(nak_holdoff) {
++				DWC_LIST_FOREACH(qh_ptr, &hcd->non_periodic_sched_inactive) {
++					qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
++					if (qh->nak_frame == 0xFFFF) {
++						hcd->fiq_state->kick_np_queues = 1;
++					}
++				}
++			}
++		}
++	}
++	if(!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned))
++		ret_val |= DWC_OTG_TRANSACTION_PERIODIC;
++
++	if(!DWC_LIST_EMPTY(&hcd->non_periodic_sched_active))
++		ret_val |= DWC_OTG_TRANSACTION_NON_PERIODIC;
++
++
++#ifdef DEBUG_HOST_CHANNELS
++	last_sel_trans_num_avail_hc_at_end = hcd->available_host_channels;
++#endif /* DEBUG_HOST_CHANNELS */
++	return ret_val;
++}
++
++/**
++ * Attempts to queue a single transaction request for a host channel
++ * associated with either a periodic or non-periodic transfer. This function
++ * assumes that there is space available in the appropriate request queue. For
++ * an OUT transfer or SETUP transaction in Slave mode, it checks whether space
++ * is available in the appropriate Tx FIFO.
++ *
++ * @param hcd The HCD state structure.
++ * @param hc Host channel descriptor associated with either a periodic or
++ * non-periodic transfer.
++ * @param fifo_dwords_avail Number of DWORDs available in the periodic Tx
++ * FIFO for periodic transfers or the non-periodic Tx FIFO for non-periodic
++ * transfers.
++ *
++ * @return 1 if a request is queued and more requests may be needed to
++ * complete the transfer, 0 if no more requests are required for this
++ * transfer, -1 if there is insufficient space in the Tx FIFO.
++ */
++static int queue_transaction(dwc_otg_hcd_t * hcd,
++			     dwc_hc_t * hc, uint16_t fifo_dwords_avail)
++{
++	int retval;
++
++	if (hcd->core_if->dma_enable) {
++		if (hcd->core_if->dma_desc_enable) {
++			if (!hc->xfer_started
++			    || (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)) {
++				dwc_otg_hcd_start_xfer_ddma(hcd, hc->qh);
++				hc->qh->ping_state = 0;
++			}
++		} else if (!hc->xfer_started) {
++			if (fiq_fsm_enable && hc->error_state) {
++				hcd->fiq_state->channel[hc->hc_num].nr_errors =
++					DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list)->error_count;
++				hcd->fiq_state->channel[hc->hc_num].fsm =
++					FIQ_PASSTHROUGH_ERRORSTATE;
++			}
++			dwc_otg_hc_start_transfer(hcd->core_if, hc);
++			hc->qh->ping_state = 0;
++		}
++		retval = 0;
++	} else if (hc->halt_pending) {
++		/* Don't queue a request if the channel has been halted. */
++		retval = 0;
++	} else if (hc->halt_on_queue) {
++		dwc_otg_hc_halt(hcd->core_if, hc, hc->halt_status);
++		retval = 0;
++	} else if (hc->do_ping) {
++		if (!hc->xfer_started) {
++			dwc_otg_hc_start_transfer(hcd->core_if, hc);
++		}
++		retval = 0;
++	} else if (!hc->ep_is_in || hc->data_pid_start == DWC_OTG_HC_PID_SETUP) {
++		if ((fifo_dwords_avail * 4) >= hc->max_packet) {
++			if (!hc->xfer_started) {
++				dwc_otg_hc_start_transfer(hcd->core_if, hc);
++				retval = 1;
++			} else {
++				retval =
++				    dwc_otg_hc_continue_transfer(hcd->core_if,
++								 hc);
++			}
++		} else {
++			retval = -1;
++		}
++	} else {
++		if (!hc->xfer_started) {
++			dwc_otg_hc_start_transfer(hcd->core_if, hc);
++			retval = 1;
++		} else {
++			retval = dwc_otg_hc_continue_transfer(hcd->core_if, hc);
++		}
++	}
++
++	return retval;
++}
++
++/**
++ * Processes periodic channels for the next frame and queues transactions for
++ * these channels to the DWC_otg controller. After queueing transactions, the
++ * Periodic Tx FIFO Empty interrupt is enabled if there are more transactions
++ * to queue as Periodic Tx FIFO or request queue space becomes available.
++ * Otherwise, the Periodic Tx FIFO Empty interrupt is disabled.
++ */
++static void process_periodic_channels(dwc_otg_hcd_t * hcd)
++{
++	hptxsts_data_t tx_status;
++	dwc_list_link_t *qh_ptr;
++	dwc_otg_qh_t *qh;
++	int status = 0;
++	int no_queue_space = 0;
++	int no_fifo_space = 0;
++
++	dwc_otg_host_global_regs_t *host_regs;
++	host_regs = hcd->core_if->host_if->host_global_regs;
++
++	DWC_DEBUGPL(DBG_HCDV, "Queue periodic transactions\n");
++#ifdef DEBUG
++	tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
++	DWC_DEBUGPL(DBG_HCDV,
++		    "  P Tx Req Queue Space Avail (before queue): %d\n",
++		    tx_status.b.ptxqspcavail);
++	DWC_DEBUGPL(DBG_HCDV, "  P Tx FIFO Space Avail (before queue): %d\n",
++		    tx_status.b.ptxfspcavail);
++#endif
++
++	qh_ptr = hcd->periodic_sched_assigned.next;
++	while (qh_ptr != &hcd->periodic_sched_assigned) {
++		tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
++		if (tx_status.b.ptxqspcavail == 0) {
++			no_queue_space = 1;
++			break;
++		}
++
++		qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
++
++		// Do not send a split start transaction any later than frame .6
++		// Note, we have to schedule a periodic in .5 to make it go in .6
++		if(fiq_fsm_enable && qh->do_split && ((dwc_otg_hcd_get_frame_number(hcd) + 1) & 7) > 6)
++		{
++			qh_ptr = qh_ptr->next;
++			hcd->fiq_state->next_sched_frame = dwc_otg_hcd_get_frame_number(hcd) | 7;
++			continue;
++		}
++
++		if (fiq_fsm_enable && fiq_fsm_transaction_suitable(hcd, qh)) {
++			if (qh->do_split)
++				fiq_fsm_queue_split_transaction(hcd, qh);
++			else
++				fiq_fsm_queue_isoc_transaction(hcd, qh);
++		} else {
++
++			/*
++			 * Set a flag if we're queueing high-bandwidth in slave mode.
++			 * The flag prevents any halts to get into the request queue in
++			 * the middle of multiple high-bandwidth packets getting queued.
++			 */
++			if (!hcd->core_if->dma_enable && qh->channel->multi_count > 1) {
++				hcd->core_if->queuing_high_bandwidth = 1;
++			}
++			status = queue_transaction(hcd, qh->channel,
++							tx_status.b.ptxfspcavail);
++			if (status < 0) {
++				no_fifo_space = 1;
++				break;
++			}
++		}
++
++		/*
++		 * In Slave mode, stay on the current transfer until there is
++		 * nothing more to do or the high-bandwidth request count is
++		 * reached. In DMA mode, only need to queue one request. The
++		 * controller automatically handles multiple packets for
++		 * high-bandwidth transfers.
++		 */
++		if (hcd->core_if->dma_enable || status == 0 ||
++		    qh->channel->requests == qh->channel->multi_count) {
++			qh_ptr = qh_ptr->next;
++			/*
++			 * Move the QH from the periodic assigned schedule to
++			 * the periodic queued schedule.
++			 */
++			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_queued,
++					   &qh->qh_list_entry);
++
++			/* done queuing high bandwidth */
++			hcd->core_if->queuing_high_bandwidth = 0;
++		}
++	}
++
++	if (!hcd->core_if->dma_enable) {
++		dwc_otg_core_global_regs_t *global_regs;
++		gintmsk_data_t intr_mask = {.d32 = 0 };
++
++		global_regs = hcd->core_if->core_global_regs;
++		intr_mask.b.ptxfempty = 1;
++#ifdef DEBUG
++		tx_status.d32 = DWC_READ_REG32(&host_regs->hptxsts);
++		DWC_DEBUGPL(DBG_HCDV,
++			    "  P Tx Req Queue Space Avail (after queue): %d\n",
++			    tx_status.b.ptxqspcavail);
++		DWC_DEBUGPL(DBG_HCDV,
++			    "  P Tx FIFO Space Avail (after queue): %d\n",
++			    tx_status.b.ptxfspcavail);
++#endif
++		if (!DWC_LIST_EMPTY(&hcd->periodic_sched_assigned) ||
++		    no_queue_space || no_fifo_space) {
++			/*
++			 * May need to queue more transactions as the request
++			 * queue or Tx FIFO empties. Enable the periodic Tx
++			 * FIFO empty interrupt. (Always use the half-empty
++			 * level to ensure that new requests are loaded as
++			 * soon as possible.)
++			 */
++			DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
++					 intr_mask.d32);
++		} else {
++			/*
++			 * Disable the Tx FIFO empty interrupt since there are
++			 * no more transactions that need to be queued right
++			 * now. This function is called from interrupt
++			 * handlers to queue more transactions as transfer
++			 * states change.
++			 */
++			DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
++					 0);
++		}
++	}
++}
++
++/**
++ * Processes active non-periodic channels and queues transactions for these
++ * channels to the DWC_otg controller. After queueing transactions, the NP Tx
++ * FIFO Empty interrupt is enabled if there are more transactions to queue as
++ * NP Tx FIFO or request queue space becomes available. Otherwise, the NP Tx
++ * FIFO Empty interrupt is disabled.
++ */
++static void process_non_periodic_channels(dwc_otg_hcd_t * hcd)
++{
++	gnptxsts_data_t tx_status;
++	dwc_list_link_t *orig_qh_ptr;
++	dwc_otg_qh_t *qh;
++	int status;
++	int no_queue_space = 0;
++	int no_fifo_space = 0;
++	int more_to_do = 0;
++
++	dwc_otg_core_global_regs_t *global_regs =
++	    hcd->core_if->core_global_regs;
++
++	DWC_DEBUGPL(DBG_HCDV, "Queue non-periodic transactions\n");
++#ifdef DEBUG
++	tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
++	DWC_DEBUGPL(DBG_HCDV,
++		    "  NP Tx Req Queue Space Avail (before queue): %d\n",
++		    tx_status.b.nptxqspcavail);
++	DWC_DEBUGPL(DBG_HCDV, "  NP Tx FIFO Space Avail (before queue): %d\n",
++		    tx_status.b.nptxfspcavail);
++#endif
++	/*
++	 * Keep track of the starting point. Skip over the start-of-list
++	 * entry.
++	 */
++	if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
++		hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
++	}
++	orig_qh_ptr = hcd->non_periodic_qh_ptr;
++
++	/*
++	 * Process once through the active list or until no more space is
++	 * available in the request queue or the Tx FIFO.
++	 */
++	do {
++		tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
++		if (!hcd->core_if->dma_enable && tx_status.b.nptxqspcavail == 0) {
++			no_queue_space = 1;
++			break;
++		}
++
++		qh = DWC_LIST_ENTRY(hcd->non_periodic_qh_ptr, dwc_otg_qh_t,
++				    qh_list_entry);
++
++		if(fiq_fsm_enable && fiq_fsm_transaction_suitable(hcd, qh)) {
++			fiq_fsm_queue_split_transaction(hcd, qh);
++		} else {
++			status = queue_transaction(hcd, qh->channel,
++						tx_status.b.nptxfspcavail);
++
++			if (status > 0) {
++				more_to_do = 1;
++			} else if (status < 0) {
++				no_fifo_space = 1;
++				break;
++			}
++		}
++		/* Advance to next QH, skipping start-of-list entry. */
++		hcd->non_periodic_qh_ptr = hcd->non_periodic_qh_ptr->next;
++		if (hcd->non_periodic_qh_ptr == &hcd->non_periodic_sched_active) {
++			hcd->non_periodic_qh_ptr =
++			    hcd->non_periodic_qh_ptr->next;
++		}
++
++	} while (hcd->non_periodic_qh_ptr != orig_qh_ptr);
++
++	if (!hcd->core_if->dma_enable) {
++		gintmsk_data_t intr_mask = {.d32 = 0 };
++		intr_mask.b.nptxfempty = 1;
++
++#ifdef DEBUG
++		tx_status.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
++		DWC_DEBUGPL(DBG_HCDV,
++			    "  NP Tx Req Queue Space Avail (after queue): %d\n",
++			    tx_status.b.nptxqspcavail);
++		DWC_DEBUGPL(DBG_HCDV,
++			    "  NP Tx FIFO Space Avail (after queue): %d\n",
++			    tx_status.b.nptxfspcavail);
++#endif
++		if (more_to_do || no_queue_space || no_fifo_space) {
++			/*
++			 * May need to queue more transactions as the request
++			 * queue or Tx FIFO empties. Enable the non-periodic
++			 * Tx FIFO empty interrupt. (Always use the half-empty
++			 * level to ensure that new requests are loaded as
++			 * soon as possible.)
++			 */
++			DWC_MODIFY_REG32(&global_regs->gintmsk, 0,
++					 intr_mask.d32);
++		} else {
++			/*
++			 * Disable the Tx FIFO empty interrupt since there are
++			 * no more transactions that need to be queued right
++			 * now. This function is called from interrupt
++			 * handlers to queue more transactions as transfer
++			 * states change.
++			 */
++			DWC_MODIFY_REG32(&global_regs->gintmsk, intr_mask.d32,
++					 0);
++		}
++	}
++}
++
++/**
++ * This function processes the currently active host channels and queues
++ * transactions for these channels to the DWC_otg controller. It is called
++ * from HCD interrupt handler functions.
++ *
++ * @param hcd The HCD state structure.
++ * @param tr_type The type(s) of transactions to queue (non-periodic,
++ * periodic, or both).
++ */
++void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * hcd,
++				    dwc_otg_transaction_type_e tr_type)
++{
++#ifdef DEBUG_SOF
++	DWC_DEBUGPL(DBG_HCD, "Queue Transactions\n");
++#endif
++	/* Process host channels associated with periodic transfers. */
++	if ((tr_type == DWC_OTG_TRANSACTION_PERIODIC ||
++	     tr_type == DWC_OTG_TRANSACTION_ALL) &&
++	    !DWC_LIST_EMPTY(&hcd->periodic_sched_assigned)) {
++
++		process_periodic_channels(hcd);
++	}
++
++	/* Process host channels associated with non-periodic transfers. */
++	if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC ||
++	    tr_type == DWC_OTG_TRANSACTION_ALL) {
++		if (!DWC_LIST_EMPTY(&hcd->non_periodic_sched_active)) {
++			process_non_periodic_channels(hcd);
++		} else {
++			/*
++			 * Ensure NP Tx FIFO empty interrupt is disabled when
++			 * there are no non-periodic transfers to process.
++			 */
++			gintmsk_data_t gintmsk = {.d32 = 0 };
++			gintmsk.b.nptxfempty = 1;
++
++			if (fiq_enable) {
++				local_fiq_disable();
++				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
++				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++				local_fiq_enable();
++			} else {
++				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
++			}
++		}
++	}
++}
++
++#ifdef DWC_HS_ELECT_TST
++/*
++ * Quick and dirty hack to implement the HS Electrical Test
++ * SINGLE_STEP_GET_DEVICE_DESCRIPTOR feature.
++ *
++ * This code was copied from our userspace app "hset". It sends a
++ * Get Device Descriptor control sequence in two parts, first the
++ * Setup packet by itself, followed some time later by the In and
++ * Ack packets. Rather than trying to figure out how to add this
++ * functionality to the normal driver code, we just hijack the
++ * hardware, using these two function to drive the hardware
++ * directly.
++ */
++
++static dwc_otg_core_global_regs_t *global_regs;
++static dwc_otg_host_global_regs_t *hc_global_regs;
++static dwc_otg_hc_regs_t *hc_regs;
++static uint32_t *data_fifo;
++
++static void do_setup(void)
++{
++	gintsts_data_t gintsts;
++	hctsiz_data_t hctsiz;
++	hcchar_data_t hcchar;
++	haint_data_t haint;
++	hcint_data_t hcint;
++
++	/* Enable HAINTs */
++	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
++
++	/* Enable HCINTs */
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Read HAINT */
++	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++	/* Read HCINT */
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++	/* Read HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++	/* Clear HCINT */
++	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++	/* Clear HAINT */
++	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++	/* Clear GINTSTS */
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/*
++	 * Send Setup packet (Get Device Descriptor)
++	 */
++
++	/* Make sure channel is disabled */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	if (hcchar.b.chen) {
++		hcchar.b.chdis = 1;
++//              hcchar.b.chen = 1;
++		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++		//sleep(1);
++		dwc_mdelay(1000);
++
++		/* Read GINTSTS */
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++		/* Read HAINT */
++		haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++		/* Read HCINT */
++		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++		/* Read HCCHAR */
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++		/* Clear HCINT */
++		DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++		/* Clear HAINT */
++		DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++		/* Clear GINTSTS */
++		DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	}
++
++	/* Set HCTSIZ */
++	hctsiz.d32 = 0;
++	hctsiz.b.xfersize = 8;
++	hctsiz.b.pktcnt = 1;
++	hctsiz.b.pid = DWC_OTG_HC_PID_SETUP;
++	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
++
++	/* Set HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
++	hcchar.b.epdir = 0;
++	hcchar.b.epnum = 0;
++	hcchar.b.mps = 8;
++	hcchar.b.chen = 1;
++	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++
++	/* Fill FIFO with Setup data for Get Device Descriptor */
++	data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
++	DWC_WRITE_REG32(data_fifo++, 0x01000680);
++	DWC_WRITE_REG32(data_fifo++, 0x00080000);
++
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Wait for host channel interrupt */
++	do {
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++	} while (gintsts.b.hcintr == 0);
++
++	/* Disable HCINTs */
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
++
++	/* Disable HAINTs */
++	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
++
++	/* Read HAINT */
++	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++	/* Read HCINT */
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++	/* Read HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++	/* Clear HCINT */
++	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++	/* Clear HAINT */
++	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++	/* Clear GINTSTS */
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++}
++
++static void do_in_ack(void)
++{
++	gintsts_data_t gintsts;
++	hctsiz_data_t hctsiz;
++	hcchar_data_t hcchar;
++	haint_data_t haint;
++	hcint_data_t hcint;
++	host_grxsts_data_t grxsts;
++
++	/* Enable HAINTs */
++	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0001);
++
++	/* Enable HCINTs */
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x04a3);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Read HAINT */
++	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++	/* Read HCINT */
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++	/* Read HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++	/* Clear HCINT */
++	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++	/* Clear HAINT */
++	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++	/* Clear GINTSTS */
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/*
++	 * Receive Control In packet
++	 */
++
++	/* Make sure channel is disabled */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	if (hcchar.b.chen) {
++		hcchar.b.chdis = 1;
++		hcchar.b.chen = 1;
++		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++		//sleep(1);
++		dwc_mdelay(1000);
++
++		/* Read GINTSTS */
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++		/* Read HAINT */
++		haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++		/* Read HCINT */
++		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++		/* Read HCCHAR */
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++		/* Clear HCINT */
++		DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++		/* Clear HAINT */
++		DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++		/* Clear GINTSTS */
++		DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	}
++
++	/* Set HCTSIZ */
++	hctsiz.d32 = 0;
++	hctsiz.b.xfersize = 8;
++	hctsiz.b.pktcnt = 1;
++	hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
++	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
++
++	/* Set HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
++	hcchar.b.epdir = 1;
++	hcchar.b.epnum = 0;
++	hcchar.b.mps = 8;
++	hcchar.b.chen = 1;
++	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Wait for receive status queue interrupt */
++	do {
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++	} while (gintsts.b.rxstsqlvl == 0);
++
++	/* Read RXSTS */
++	grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
++
++	/* Clear RXSTSQLVL in GINTSTS */
++	gintsts.d32 = 0;
++	gintsts.b.rxstsqlvl = 1;
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	switch (grxsts.b.pktsts) {
++	case DWC_GRXSTS_PKTSTS_IN:
++		/* Read the data into the host buffer */
++		if (grxsts.b.bcnt > 0) {
++			int i;
++			int word_count = (grxsts.b.bcnt + 3) / 4;
++
++			data_fifo = (uint32_t *) ((char *)global_regs + 0x1000);
++
++			for (i = 0; i < word_count; i++) {
++				(void)DWC_READ_REG32(data_fifo++);
++			}
++		}
++		break;
++
++	default:
++		break;
++	}
++
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Wait for receive status queue interrupt */
++	do {
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++	} while (gintsts.b.rxstsqlvl == 0);
++
++	/* Read RXSTS */
++	grxsts.d32 = DWC_READ_REG32(&global_regs->grxstsp);
++
++	/* Clear RXSTSQLVL in GINTSTS */
++	gintsts.d32 = 0;
++	gintsts.b.rxstsqlvl = 1;
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	switch (grxsts.b.pktsts) {
++	case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
++		break;
++
++	default:
++		break;
++	}
++
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Wait for host channel interrupt */
++	do {
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++	} while (gintsts.b.hcintr == 0);
++
++	/* Read HAINT */
++	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++	/* Read HCINT */
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++	/* Read HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++	/* Clear HCINT */
++	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++	/* Clear HAINT */
++	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++	/* Clear GINTSTS */
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++//      usleep(100000);
++//      mdelay(100);
++	dwc_mdelay(1);
++
++	/*
++	 * Send handshake packet
++	 */
++
++	/* Read HAINT */
++	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++	/* Read HCINT */
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++	/* Read HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++	/* Clear HCINT */
++	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++	/* Clear HAINT */
++	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++	/* Clear GINTSTS */
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Make sure channel is disabled */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	if (hcchar.b.chen) {
++		hcchar.b.chdis = 1;
++		hcchar.b.chen = 1;
++		DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++		//sleep(1);
++		dwc_mdelay(1000);
++
++		/* Read GINTSTS */
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++		/* Read HAINT */
++		haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++		/* Read HCINT */
++		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++		/* Read HCCHAR */
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++		/* Clear HCINT */
++		DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++		/* Clear HAINT */
++		DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++		/* Clear GINTSTS */
++		DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	}
++
++	/* Set HCTSIZ */
++	hctsiz.d32 = 0;
++	hctsiz.b.xfersize = 0;
++	hctsiz.b.pktcnt = 1;
++	hctsiz.b.pid = DWC_OTG_HC_PID_DATA1;
++	DWC_WRITE_REG32(&hc_regs->hctsiz, hctsiz.d32);
++
++	/* Set HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
++	hcchar.b.epdir = 0;
++	hcchar.b.epnum = 0;
++	hcchar.b.mps = 8;
++	hcchar.b.chen = 1;
++	DWC_WRITE_REG32(&hc_regs->hcchar, hcchar.d32);
++
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++
++	/* Wait for host channel interrupt */
++	do {
++		gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++	} while (gintsts.b.hcintr == 0);
++
++	/* Disable HCINTs */
++	DWC_WRITE_REG32(&hc_regs->hcintmsk, 0x0000);
++
++	/* Disable HAINTs */
++	DWC_WRITE_REG32(&hc_global_regs->haintmsk, 0x0000);
++
++	/* Read HAINT */
++	haint.d32 = DWC_READ_REG32(&hc_global_regs->haint);
++
++	/* Read HCINT */
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++
++	/* Read HCCHAR */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++
++	/* Clear HCINT */
++	DWC_WRITE_REG32(&hc_regs->hcint, hcint.d32);
++
++	/* Clear HAINT */
++	DWC_WRITE_REG32(&hc_global_regs->haint, haint.d32);
++
++	/* Clear GINTSTS */
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	/* Read GINTSTS */
++	gintsts.d32 = DWC_READ_REG32(&global_regs->gintsts);
++}
++#endif
++
++/** Handles hub class-specific requests. */
++int dwc_otg_hcd_hub_control(dwc_otg_hcd_t * dwc_otg_hcd,
++			    uint16_t typeReq,
++			    uint16_t wValue,
++			    uint16_t wIndex, uint8_t * buf, uint16_t wLength)
++{
++	int retval = 0;
++
++	dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
++	usb_hub_descriptor_t *hub_desc;
++	hprt0_data_t hprt0 = {.d32 = 0 };
++
++	uint32_t port_status;
++
++	switch (typeReq) {
++	case UCR_CLEAR_HUB_FEATURE:
++		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++			    "ClearHubFeature 0x%x\n", wValue);
++		switch (wValue) {
++		case UHF_C_HUB_LOCAL_POWER:
++		case UHF_C_HUB_OVER_CURRENT:
++			/* Nothing required here */
++			break;
++		default:
++			retval = -DWC_E_INVALID;
++			DWC_ERROR("DWC OTG HCD - "
++				  "ClearHubFeature request %xh unknown\n",
++				  wValue);
++		}
++		break;
++	case UCR_CLEAR_PORT_FEATURE:
++#ifdef CONFIG_USB_DWC_OTG_LPM
++		if (wValue != UHF_PORT_L1)
++#endif
++			if (!wIndex || wIndex > 1)
++				goto error;
++
++		switch (wValue) {
++		case UHF_PORT_ENABLE:
++			DWC_DEBUGPL(DBG_ANY, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_ENABLE\n");
++			hprt0.d32 = dwc_otg_read_hprt0(core_if);
++			hprt0.b.prtena = 1;
++			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++			break;
++		case UHF_PORT_SUSPEND:
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
++
++			if (core_if->power_down == 2) {
++				dwc_otg_host_hibernation_restore(core_if, 0, 0);
++			} else {
++				DWC_WRITE_REG32(core_if->pcgcctl, 0);
++				dwc_mdelay(5);
++
++				hprt0.d32 = dwc_otg_read_hprt0(core_if);
++				hprt0.b.prtres = 1;
++				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++				hprt0.b.prtsusp = 0;
++				/* Clear Resume bit */
++				dwc_mdelay(100);
++				hprt0.b.prtres = 0;
++				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++			}
++			break;
++#ifdef CONFIG_USB_DWC_OTG_LPM
++		case UHF_PORT_L1:
++			{
++				pcgcctl_data_t pcgcctl = {.d32 = 0 };
++				glpmcfg_data_t lpmcfg = {.d32 = 0 };
++
++				lpmcfg.d32 =
++				    DWC_READ_REG32(&core_if->
++						   core_global_regs->glpmcfg);
++				lpmcfg.b.en_utmi_sleep = 0;
++				lpmcfg.b.hird_thres &= (~(1 << 4));
++				lpmcfg.b.prt_sleep_sts = 1;
++				DWC_WRITE_REG32(&core_if->
++						core_global_regs->glpmcfg,
++						lpmcfg.d32);
++
++				/* Clear Enbl_L1Gating bit. */
++				pcgcctl.b.enbl_sleep_gating = 1;
++				DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32,
++						 0);
++
++				dwc_mdelay(5);
++
++				hprt0.d32 = dwc_otg_read_hprt0(core_if);
++				hprt0.b.prtres = 1;
++				DWC_WRITE_REG32(core_if->host_if->hprt0,
++						hprt0.d32);
++				/* This bit will be cleared in wakeup interrupt handle */
++				break;
++			}
++#endif
++		case UHF_PORT_POWER:
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_POWER\n");
++			hprt0.d32 = dwc_otg_read_hprt0(core_if);
++			hprt0.b.prtpwr = 0;
++			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++			break;
++		case UHF_PORT_INDICATOR:
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_INDICATOR\n");
++			/* Port inidicator not supported */
++			break;
++		case UHF_C_PORT_CONNECTION:
++			/* Clears drivers internal connect status change
++			 * flag */
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_C_CONNECTION\n");
++			dwc_otg_hcd->flags.b.port_connect_status_change = 0;
++			break;
++		case UHF_C_PORT_RESET:
++			/* Clears the driver's internal Port Reset Change
++			 * flag */
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_C_RESET\n");
++			dwc_otg_hcd->flags.b.port_reset_change = 0;
++			break;
++		case UHF_C_PORT_ENABLE:
++			/* Clears the driver's internal Port
++			 * Enable/Disable Change flag */
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_C_ENABLE\n");
++			dwc_otg_hcd->flags.b.port_enable_change = 0;
++			break;
++		case UHF_C_PORT_SUSPEND:
++			/* Clears the driver's internal Port Suspend
++			 * Change flag, which is set when resume signaling on
++			 * the host port is complete */
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_C_SUSPEND\n");
++			dwc_otg_hcd->flags.b.port_suspend_change = 0;
++			break;
++#ifdef CONFIG_USB_DWC_OTG_LPM
++		case UHF_C_PORT_L1:
++			dwc_otg_hcd->flags.b.port_l1_change = 0;
++			break;
++#endif
++		case UHF_C_PORT_OVER_CURRENT:
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "ClearPortFeature USB_PORT_FEAT_C_OVER_CURRENT\n");
++			dwc_otg_hcd->flags.b.port_over_current_change = 0;
++			break;
++		default:
++			retval = -DWC_E_INVALID;
++			DWC_ERROR("DWC OTG HCD - "
++				  "ClearPortFeature request %xh "
++				  "unknown or unsupported\n", wValue);
++		}
++		break;
++	case UCR_GET_HUB_DESCRIPTOR:
++		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++			    "GetHubDescriptor\n");
++		hub_desc = (usb_hub_descriptor_t *) buf;
++		hub_desc->bDescLength = 9;
++		hub_desc->bDescriptorType = 0x29;
++		hub_desc->bNbrPorts = 1;
++		USETW(hub_desc->wHubCharacteristics, 0x08);
++		hub_desc->bPwrOn2PwrGood = 1;
++		hub_desc->bHubContrCurrent = 0;
++		hub_desc->DeviceRemovable[0] = 0;
++		hub_desc->DeviceRemovable[1] = 0xff;
++		break;
++	case UCR_GET_HUB_STATUS:
++		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++			    "GetHubStatus\n");
++		DWC_MEMSET(buf, 0, 4);
++		break;
++	case UCR_GET_PORT_STATUS:
++		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++			    "GetPortStatus wIndex = 0x%04x FLAGS=0x%08x\n",
++			    wIndex, dwc_otg_hcd->flags.d32);
++		if (!wIndex || wIndex > 1)
++			goto error;
++
++		port_status = 0;
++
++		if (dwc_otg_hcd->flags.b.port_connect_status_change)
++			port_status |= (1 << UHF_C_PORT_CONNECTION);
++
++		if (dwc_otg_hcd->flags.b.port_enable_change)
++			port_status |= (1 << UHF_C_PORT_ENABLE);
++
++		if (dwc_otg_hcd->flags.b.port_suspend_change)
++			port_status |= (1 << UHF_C_PORT_SUSPEND);
++
++		if (dwc_otg_hcd->flags.b.port_l1_change)
++			port_status |= (1 << UHF_C_PORT_L1);
++
++		if (dwc_otg_hcd->flags.b.port_reset_change) {
++			port_status |= (1 << UHF_C_PORT_RESET);
++		}
++
++		if (dwc_otg_hcd->flags.b.port_over_current_change) {
++			DWC_WARN("Overcurrent change detected\n");
++			port_status |= (1 << UHF_C_PORT_OVER_CURRENT);
++		}
++
++		if (!dwc_otg_hcd->flags.b.port_connect_status) {
++			/*
++			 * The port is disconnected, which means the core is
++			 * either in device mode or it soon will be. Just
++			 * return 0's for the remainder of the port status
++			 * since the port register can't be read if the core
++			 * is in device mode.
++			 */
++			*((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
++			break;
++		}
++
++		hprt0.d32 = DWC_READ_REG32(core_if->host_if->hprt0);
++		DWC_DEBUGPL(DBG_HCDV, "  HPRT0: 0x%08x\n", hprt0.d32);
++
++		if (hprt0.b.prtconnsts)
++			port_status |= (1 << UHF_PORT_CONNECTION);
++
++		if (hprt0.b.prtena)
++			port_status |= (1 << UHF_PORT_ENABLE);
++
++		if (hprt0.b.prtsusp)
++			port_status |= (1 << UHF_PORT_SUSPEND);
++
++		if (hprt0.b.prtovrcurract)
++			port_status |= (1 << UHF_PORT_OVER_CURRENT);
++
++		if (hprt0.b.prtrst)
++			port_status |= (1 << UHF_PORT_RESET);
++
++		if (hprt0.b.prtpwr)
++			port_status |= (1 << UHF_PORT_POWER);
++
++		if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
++			port_status |= (1 << UHF_PORT_HIGH_SPEED);
++		else if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED)
++			port_status |= (1 << UHF_PORT_LOW_SPEED);
++
++		if (hprt0.b.prttstctl)
++			port_status |= (1 << UHF_PORT_TEST);
++		if (dwc_otg_get_lpm_portsleepstatus(dwc_otg_hcd->core_if)) {
++			port_status |= (1 << UHF_PORT_L1);
++		}
++		/*
++		   For Synopsys HW emulation of Power down wkup_control asserts the
++		   hreset_n and prst_n on suspned. This causes the HPRT0 to be zero.
++		   We intentionally tell the software that port is in L2Suspend state.
++		   Only for STE.
++		*/
++		if ((core_if->power_down == 2)
++		    && (core_if->hibernation_suspend == 1)) {
++			port_status |= (1 << UHF_PORT_SUSPEND);
++		}
++		/* USB_PORT_FEAT_INDICATOR unsupported always 0 */
++
++		*((__le32 *) buf) = dwc_cpu_to_le32(&port_status);
++
++		break;
++	case UCR_SET_HUB_FEATURE:
++		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++			    "SetHubFeature\n");
++		/* No HUB features supported */
++		break;
++	case UCR_SET_PORT_FEATURE:
++		if (wValue != UHF_PORT_TEST && (!wIndex || wIndex > 1))
++			goto error;
++
++		if (!dwc_otg_hcd->flags.b.port_connect_status) {
++			/*
++			 * The port is disconnected, which means the core is
++			 * either in device mode or it soon will be. Just
++			 * return without doing anything since the port
++			 * register can't be written if the core is in device
++			 * mode.
++			 */
++			break;
++		}
++
++		switch (wValue) {
++		case UHF_PORT_SUSPEND:
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
++			if (dwc_otg_hcd_otg_port(dwc_otg_hcd) != wIndex) {
++				goto error;
++			}
++			if (core_if->power_down == 2) {
++				int timeout = 300;
++				dwc_irqflags_t flags;
++				pcgcctl_data_t pcgcctl = {.d32 = 0 };
++				gpwrdn_data_t gpwrdn = {.d32 = 0 };
++				gusbcfg_data_t gusbcfg = {.d32 = 0 };
++#ifdef DWC_DEV_SRPCAP
++				int32_t otg_cap_param = core_if->core_params->otg_cap;
++#endif
++				DWC_PRINTF("Preparing for complete power-off\n");
++
++				/* Save registers before hibernation */
++				dwc_otg_save_global_regs(core_if);
++				dwc_otg_save_host_regs(core_if);
++
++				hprt0.d32 = dwc_otg_read_hprt0(core_if);
++				hprt0.b.prtsusp = 1;
++				hprt0.b.prtena = 0;
++				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++				/* Spin hprt0.b.prtsusp to became 1 */
++				do {
++					hprt0.d32 = dwc_otg_read_hprt0(core_if);
++					if (hprt0.b.prtsusp) {
++						break;
++					}
++					dwc_mdelay(1);
++				} while (--timeout);
++				if (!timeout) {
++					DWC_WARN("Suspend wasn't genereted\n");
++				}
++				dwc_udelay(10);
++
++				/*
++				 * We need to disable interrupts to prevent servicing of any IRQ
++				 * during going to hibernation
++				 */
++				DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
++				core_if->lx_state = DWC_OTG_L2;
++#ifdef DWC_DEV_SRPCAP
++				hprt0.d32 = dwc_otg_read_hprt0(core_if);
++				hprt0.b.prtpwr = 0;
++				hprt0.b.prtena = 0;
++				DWC_WRITE_REG32(core_if->host_if->hprt0,
++						hprt0.d32);
++#endif
++				gusbcfg.d32 =
++				    DWC_READ_REG32(&core_if->core_global_regs->
++						   gusbcfg);
++				if (gusbcfg.b.ulpi_utmi_sel == 1) {
++					/* ULPI interface */
++					/* Suspend the Phy Clock */
++					pcgcctl.d32 = 0;
++					pcgcctl.b.stoppclk = 1;
++					DWC_MODIFY_REG32(core_if->pcgcctl, 0,
++							 pcgcctl.d32);
++					dwc_udelay(10);
++					gpwrdn.b.pmuactv = 1;
++					DWC_MODIFY_REG32(&core_if->
++							 core_global_regs->
++							 gpwrdn, 0, gpwrdn.d32);
++				} else {
++					/* UTMI+ Interface */
++					gpwrdn.b.pmuactv = 1;
++					DWC_MODIFY_REG32(&core_if->
++							 core_global_regs->
++							 gpwrdn, 0, gpwrdn.d32);
++					dwc_udelay(10);
++					pcgcctl.b.stoppclk = 1;
++					DWC_MODIFY_REG32(core_if->pcgcctl, 0, pcgcctl.d32);
++					dwc_udelay(10);
++				}
++#ifdef DWC_DEV_SRPCAP
++				gpwrdn.d32 = 0;
++				gpwrdn.b.dis_vbus = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++#endif
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuintsel = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++				dwc_udelay(10);
++
++				gpwrdn.d32 = 0;
++#ifdef DWC_DEV_SRPCAP
++				gpwrdn.b.srp_det_msk = 1;
++#endif
++				gpwrdn.b.disconn_det_msk = 1;
++				gpwrdn.b.lnstchng_msk = 1;
++				gpwrdn.b.sts_chngint_msk = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++				dwc_udelay(10);
++
++				/* Enable Power Down Clamp and all interrupts in GPWRDN */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pwrdnclmp = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++				dwc_udelay(10);
++
++				/* Switch off VDD */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pwrdnswtch = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++
++#ifdef DWC_DEV_SRPCAP
++				if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE)
++				{
++					core_if->pwron_timer_started = 1;
++					DWC_TIMER_SCHEDULE(core_if->pwron_timer, 6000 /* 6 secs */ );
++				}
++#endif
++				/* Save gpwrdn register for further usage if stschng interrupt */
++				core_if->gr_backup->gpwrdn_local =
++						DWC_READ_REG32(&core_if->core_global_regs->gpwrdn);
++
++				/* Set flag to indicate that we are in hibernation */
++				core_if->hibernation_suspend = 1;
++				DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock,flags);
++
++				DWC_PRINTF("Host hibernation completed\n");
++				// Exit from case statement
++				break;
++
++			}
++			if (dwc_otg_hcd_otg_port(dwc_otg_hcd) == wIndex &&
++			    dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
++				gotgctl_data_t gotgctl = {.d32 = 0 };
++				gotgctl.b.hstsethnpen = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gotgctl, 0, gotgctl.d32);
++				core_if->op_state = A_SUSPEND;
++			}
++			hprt0.d32 = dwc_otg_read_hprt0(core_if);
++			hprt0.b.prtsusp = 1;
++			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++			{
++				dwc_irqflags_t flags;
++				/* Update lx_state */
++				DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
++				core_if->lx_state = DWC_OTG_L2;
++				DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
++			}
++			/* Suspend the Phy Clock */
++			{
++				pcgcctl_data_t pcgcctl = {.d32 = 0 };
++				pcgcctl.b.stoppclk = 1;
++				DWC_MODIFY_REG32(core_if->pcgcctl, 0,
++						 pcgcctl.d32);
++				dwc_udelay(10);
++			}
++
++			/* For HNP the bus must be suspended for at least 200ms. */
++			if (dwc_otg_hcd->fops->get_b_hnp_enable(dwc_otg_hcd)) {
++				pcgcctl_data_t pcgcctl = {.d32 = 0 };
++				pcgcctl.b.stoppclk = 1;
++                DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
++				dwc_mdelay(200);
++			}
++
++			/** @todo - check how sw can wait for 1 sec to check asesvld??? */
++#if 0 //vahrama !!!!!!!!!!!!!!!!!!
++			if (core_if->adp_enable) {
++				gotgctl_data_t gotgctl = {.d32 = 0 };
++				gpwrdn_data_t gpwrdn;
++
++				while (gotgctl.b.asesvld == 1) {
++					gotgctl.d32 =
++					    DWC_READ_REG32(&core_if->
++							   core_global_regs->
++							   gotgctl);
++					dwc_mdelay(100);
++				}
++
++				/* Enable Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuactv = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++
++				/* Unmask SRP detected interrupt from Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.srp_det_msk = 1;
++				DWC_MODIFY_REG32(&core_if->core_global_regs->
++						 gpwrdn, 0, gpwrdn.d32);
++
++				dwc_otg_adp_probe_start(core_if);
++			}
++#endif
++			break;
++		case UHF_PORT_POWER:
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "SetPortFeature - USB_PORT_FEAT_POWER\n");
++			hprt0.d32 = dwc_otg_read_hprt0(core_if);
++			hprt0.b.prtpwr = 1;
++			DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++			break;
++		case UHF_PORT_RESET:
++			if ((core_if->power_down == 2)
++			    && (core_if->hibernation_suspend == 1)) {
++				/* If we are going to exit from Hibernated
++				 * state via USB RESET.
++				 */
++				dwc_otg_host_hibernation_restore(core_if, 0, 1);
++			} else {
++				hprt0.d32 = dwc_otg_read_hprt0(core_if);
++
++				DWC_DEBUGPL(DBG_HCD,
++					    "DWC OTG HCD HUB CONTROL - "
++					    "SetPortFeature - USB_PORT_FEAT_RESET\n");
++				{
++					pcgcctl_data_t pcgcctl = {.d32 = 0 };
++					pcgcctl.b.enbl_sleep_gating = 1;
++					pcgcctl.b.stoppclk = 1;
++					DWC_MODIFY_REG32(core_if->pcgcctl, pcgcctl.d32, 0);
++					DWC_WRITE_REG32(core_if->pcgcctl, 0);
++				}
++#ifdef CONFIG_USB_DWC_OTG_LPM
++				{
++					glpmcfg_data_t lpmcfg;
++					lpmcfg.d32 =
++						DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++					if (lpmcfg.b.prt_sleep_sts) {
++						lpmcfg.b.en_utmi_sleep = 0;
++						lpmcfg.b.hird_thres &= (~(1 << 4));
++						DWC_WRITE_REG32
++						    (&core_if->core_global_regs->glpmcfg,
++						     lpmcfg.d32);
++						dwc_mdelay(1);
++					}
++				}
++#endif
++				hprt0.d32 = dwc_otg_read_hprt0(core_if);
++				/* Clear suspend bit if resetting from suspended state. */
++				hprt0.b.prtsusp = 0;
++				/* When B-Host the Port reset bit is set in
++				 * the Start HCD Callback function, so that
++				 * the reset is started within 1ms of the HNP
++				 * success interrupt. */
++				if (!dwc_otg_hcd_is_b_host(dwc_otg_hcd)) {
++					hprt0.b.prtpwr = 1;
++					hprt0.b.prtrst = 1;
++					DWC_PRINTF("Indeed it is in host mode hprt0 = %08x\n",hprt0.d32);
++					DWC_WRITE_REG32(core_if->host_if->hprt0,
++							hprt0.d32);
++				}
++				/* Clear reset bit in 10ms (FS/LS) or 50ms (HS) */
++				dwc_mdelay(60);
++				hprt0.b.prtrst = 0;
++				DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++				core_if->lx_state = DWC_OTG_L0;	/* Now back to the on state */
++			}
++			break;
++#ifdef DWC_HS_ELECT_TST
++		case UHF_PORT_TEST:
++			{
++				uint32_t t;
++				gintmsk_data_t gintmsk;
++
++				t = (wIndex >> 8);	/* MSB wIndex USB */
++				DWC_DEBUGPL(DBG_HCD,
++					    "DWC OTG HCD HUB CONTROL - "
++					    "SetPortFeature - USB_PORT_FEAT_TEST %d\n",
++					    t);
++				DWC_WARN("USB_PORT_FEAT_TEST %d\n", t);
++				if (t < 6) {
++					hprt0.d32 = dwc_otg_read_hprt0(core_if);
++					hprt0.b.prttstctl = t;
++					DWC_WRITE_REG32(core_if->host_if->hprt0,
++							hprt0.d32);
++				} else {
++					/* Setup global vars with reg addresses (quick and
++					 * dirty hack, should be cleaned up)
++					 */
++					global_regs = core_if->core_global_regs;
++					hc_global_regs =
++					    core_if->host_if->host_global_regs;
++					hc_regs =
++					    (dwc_otg_hc_regs_t *) ((char *)
++								   global_regs +
++								   0x500);
++					data_fifo =
++					    (uint32_t *) ((char *)global_regs +
++							  0x1000);
++
++					if (t == 6) {	/* HS_HOST_PORT_SUSPEND_RESUME */
++						/* Save current interrupt mask */
++						gintmsk.d32 =
++						    DWC_READ_REG32
++						    (&global_regs->gintmsk);
++
++						/* Disable all interrupts while we muck with
++						 * the hardware directly
++						 */
++						DWC_WRITE_REG32(&global_regs->gintmsk, 0);
++
++						/* 15 second delay per the test spec */
++						dwc_mdelay(15000);
++
++						/* Drive suspend on the root port */
++						hprt0.d32 =
++						    dwc_otg_read_hprt0(core_if);
++						hprt0.b.prtsusp = 1;
++						hprt0.b.prtres = 0;
++						DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++						/* 15 second delay per the test spec */
++						dwc_mdelay(15000);
++
++						/* Drive resume on the root port */
++						hprt0.d32 =
++						    dwc_otg_read_hprt0(core_if);
++						hprt0.b.prtsusp = 0;
++						hprt0.b.prtres = 1;
++						DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++						dwc_mdelay(100);
++
++						/* Clear the resume bit */
++						hprt0.b.prtres = 0;
++						DWC_WRITE_REG32(core_if->host_if->hprt0, hprt0.d32);
++
++						/* Restore interrupts */
++						DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
++					} else if (t == 7) {	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR setup */
++						/* Save current interrupt mask */
++						gintmsk.d32 =
++						    DWC_READ_REG32
++						    (&global_regs->gintmsk);
++
++						/* Disable all interrupts while we muck with
++						 * the hardware directly
++						 */
++						DWC_WRITE_REG32(&global_regs->gintmsk, 0);
++
++						/* 15 second delay per the test spec */
++						dwc_mdelay(15000);
++
++						/* Send the Setup packet */
++						do_setup();
++
++						/* 15 second delay so nothing else happens for awhile */
++						dwc_mdelay(15000);
++
++						/* Restore interrupts */
++						DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
++					} else if (t == 8) {	/* SINGLE_STEP_GET_DEVICE_DESCRIPTOR execute */
++						/* Save current interrupt mask */
++						gintmsk.d32 =
++						    DWC_READ_REG32
++						    (&global_regs->gintmsk);
++
++						/* Disable all interrupts while we muck with
++						 * the hardware directly
++						 */
++						DWC_WRITE_REG32(&global_regs->gintmsk, 0);
++
++						/* Send the Setup packet */
++						do_setup();
++
++						/* 15 second delay so nothing else happens for awhile */
++						dwc_mdelay(15000);
++
++						/* Send the In and Ack packets */
++						do_in_ack();
++
++						/* 15 second delay so nothing else happens for awhile */
++						dwc_mdelay(15000);
++
++						/* Restore interrupts */
++						DWC_WRITE_REG32(&global_regs->gintmsk, gintmsk.d32);
++					}
++				}
++				break;
++			}
++#endif /* DWC_HS_ELECT_TST */
++
++		case UHF_PORT_INDICATOR:
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB CONTROL - "
++				    "SetPortFeature - USB_PORT_FEAT_INDICATOR\n");
++			/* Not supported */
++			break;
++		default:
++			retval = -DWC_E_INVALID;
++			DWC_ERROR("DWC OTG HCD - "
++				  "SetPortFeature request %xh "
++				  "unknown or unsupported\n", wValue);
++			break;
++		}
++		break;
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	case UCR_SET_AND_TEST_PORT_FEATURE:
++		if (wValue != UHF_PORT_L1) {
++			goto error;
++		}
++		{
++			int portnum, hird, devaddr, remwake;
++			glpmcfg_data_t lpmcfg;
++			uint32_t time_usecs;
++			gintsts_data_t gintsts;
++			gintmsk_data_t gintmsk;
++
++			if (!dwc_otg_get_param_lpm_enable(core_if)) {
++				goto error;
++			}
++			if (wValue != UHF_PORT_L1 || wLength != 1) {
++				goto error;
++			}
++			/* Check if the port currently is in SLEEP state */
++			lpmcfg.d32 =
++			    DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++			if (lpmcfg.b.prt_sleep_sts) {
++				DWC_INFO("Port is already in sleep mode\n");
++				buf[0] = 0;	/* Return success */
++				break;
++			}
++
++			portnum = wIndex & 0xf;
++			hird = (wIndex >> 4) & 0xf;
++			devaddr = (wIndex >> 8) & 0x7f;
++			remwake = (wIndex >> 15);
++
++			if (portnum != 1) {
++				retval = -DWC_E_INVALID;
++				DWC_WARN
++				    ("Wrong port number(%d) in SetandTestPortFeature request\n",
++				     portnum);
++				break;
++			}
++
++			DWC_PRINTF
++			    ("SetandTestPortFeature request: portnum = %d, hird = %d, devaddr = %d, rewake = %d\n",
++			     portnum, hird, devaddr, remwake);
++			/* Disable LPM interrupt */
++			gintmsk.d32 = 0;
++			gintmsk.b.lpmtranrcvd = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
++					 gintmsk.d32, 0);
++
++			if (dwc_otg_hcd_send_lpm
++			    (dwc_otg_hcd, devaddr, hird, remwake)) {
++				retval = -DWC_E_INVALID;
++				break;
++			}
++
++			time_usecs = 10 * (lpmcfg.b.retry_count + 1);
++			/* We will consider timeout if time_usecs microseconds pass,
++			 * and we don't receive LPM transaction status.
++			 * After receiving non-error responce(ACK/NYET/STALL) from device,
++			 *  core will set lpmtranrcvd bit.
++			 */
++			do {
++				gintsts.d32 =
++				    DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++				if (gintsts.b.lpmtranrcvd) {
++					break;
++				}
++				dwc_udelay(1);
++			} while (--time_usecs);
++			/* lpm_int bit will be cleared in LPM interrupt handler */
++
++			/* Now fill status
++			 * 0x00 - Success
++			 * 0x10 - NYET
++			 * 0x11 - Timeout
++			 */
++			if (!gintsts.b.lpmtranrcvd) {
++				buf[0] = 0x3;	/* Completion code is Timeout */
++				dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd);
++			} else {
++				lpmcfg.d32 =
++				    DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++				if (lpmcfg.b.lpm_resp == 0x3) {
++					/* ACK responce from the device */
++					buf[0] = 0x00;	/* Success */
++				} else if (lpmcfg.b.lpm_resp == 0x2) {
++					/* NYET responce from the device */
++					buf[0] = 0x2;
++				} else {
++					/* Otherwise responce with Timeout */
++					buf[0] = 0x3;
++				}
++			}
++			DWC_PRINTF("Device responce to LPM trans is %x\n",
++				   lpmcfg.b.lpm_resp);
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0,
++					 gintmsk.d32);
++
++			break;
++		}
++#endif /* CONFIG_USB_DWC_OTG_LPM */
++	default:
++error:
++		retval = -DWC_E_INVALID;
++		DWC_WARN("DWC OTG HCD - "
++			 "Unknown hub control request type or invalid typeReq: %xh wIndex: %xh wValue: %xh\n",
++			 typeReq, wIndex, wValue);
++		break;
++	}
++
++	return retval;
++}
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++/** Returns index of host channel to perform LPM transaction. */
++int dwc_otg_hcd_get_hc_for_lpm_tran(dwc_otg_hcd_t * hcd, uint8_t devaddr)
++{
++	dwc_otg_core_if_t *core_if = hcd->core_if;
++	dwc_hc_t *hc;
++	hcchar_data_t hcchar;
++	gintmsk_data_t gintmsk = {.d32 = 0 };
++
++	if (DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
++		DWC_PRINTF("No free channel to select for LPM transaction\n");
++		return -1;
++	}
++
++	hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
++
++	/* Mask host channel interrupts. */
++	gintmsk.b.hcintr = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, gintmsk.d32, 0);
++
++	/* Fill fields that core needs for LPM transaction */
++	hcchar.b.devaddr = devaddr;
++	hcchar.b.epnum = 0;
++	hcchar.b.eptype = DWC_OTG_EP_TYPE_CONTROL;
++	hcchar.b.mps = 64;
++	hcchar.b.lspddev = (hc->speed == DWC_OTG_EP_SPEED_LOW);
++	hcchar.b.epdir = 0;	/* OUT */
++	DWC_WRITE_REG32(&core_if->host_if->hc_regs[hc->hc_num]->hcchar,
++			hcchar.d32);
++
++	/* Remove the host channel from the free list. */
++	DWC_CIRCLEQ_REMOVE_INIT(&hcd->free_hc_list, hc, hc_list_entry);
++
++	DWC_PRINTF("hcnum = %d devaddr = %d\n", hc->hc_num, devaddr);
++
++	return hc->hc_num;
++}
++
++/** Release hc after performing LPM transaction */
++void dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd_t * hcd)
++{
++	dwc_hc_t *hc;
++	glpmcfg_data_t lpmcfg;
++	uint8_t hc_num;
++
++	lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
++	hc_num = lpmcfg.b.lpm_chan_index;
++
++	hc = hcd->hc_ptr_array[hc_num];
++
++	DWC_PRINTF("Freeing channel %d after LPM\n", hc_num);
++	/* Return host channel to free list */
++	DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
++}
++
++int dwc_otg_hcd_send_lpm(dwc_otg_hcd_t * hcd, uint8_t devaddr, uint8_t hird,
++			 uint8_t bRemoteWake)
++{
++	glpmcfg_data_t lpmcfg;
++	pcgcctl_data_t pcgcctl = {.d32 = 0 };
++	int channel;
++
++	channel = dwc_otg_hcd_get_hc_for_lpm_tran(hcd, devaddr);
++	if (channel < 0) {
++		return channel;
++	}
++
++	pcgcctl.b.enbl_sleep_gating = 1;
++	DWC_MODIFY_REG32(hcd->core_if->pcgcctl, 0, pcgcctl.d32);
++
++	/* Read LPM config register */
++	lpmcfg.d32 = DWC_READ_REG32(&hcd->core_if->core_global_regs->glpmcfg);
++
++	/* Program LPM transaction fields */
++	lpmcfg.b.rem_wkup_en = bRemoteWake;
++	lpmcfg.b.hird = hird;
++	lpmcfg.b.hird_thres = 0x1c;
++	lpmcfg.b.lpm_chan_index = channel;
++	lpmcfg.b.en_utmi_sleep = 1;
++	/* Program LPM config register */
++	DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
++
++	/* Send LPM transaction */
++	lpmcfg.b.send_lpm = 1;
++	DWC_WRITE_REG32(&hcd->core_if->core_global_regs->glpmcfg, lpmcfg.d32);
++
++	return 0;
++}
++
++#endif /* CONFIG_USB_DWC_OTG_LPM */
++
++int dwc_otg_hcd_is_status_changed(dwc_otg_hcd_t * hcd, int port)
++{
++	int retval;
++
++	if (port != 1) {
++		return -DWC_E_INVALID;
++	}
++
++	retval = (hcd->flags.b.port_connect_status_change ||
++		  hcd->flags.b.port_reset_change ||
++		  hcd->flags.b.port_enable_change ||
++		  hcd->flags.b.port_suspend_change ||
++		  hcd->flags.b.port_over_current_change);
++#ifdef DEBUG
++	if (retval) {
++		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD HUB STATUS DATA:"
++			    " Root port status changed\n");
++		DWC_DEBUGPL(DBG_HCDV, "  port_connect_status_change: %d\n",
++			    hcd->flags.b.port_connect_status_change);
++		DWC_DEBUGPL(DBG_HCDV, "  port_reset_change: %d\n",
++			    hcd->flags.b.port_reset_change);
++		DWC_DEBUGPL(DBG_HCDV, "  port_enable_change: %d\n",
++			    hcd->flags.b.port_enable_change);
++		DWC_DEBUGPL(DBG_HCDV, "  port_suspend_change: %d\n",
++			    hcd->flags.b.port_suspend_change);
++		DWC_DEBUGPL(DBG_HCDV, "  port_over_current_change: %d\n",
++			    hcd->flags.b.port_over_current_change);
++	}
++#endif
++	return retval;
++}
++
++int dwc_otg_hcd_get_frame_number(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	hfnum_data_t hfnum;
++	hfnum.d32 =
++	    DWC_READ_REG32(&dwc_otg_hcd->core_if->host_if->host_global_regs->
++			   hfnum);
++
++#ifdef DEBUG_SOF
++	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD GET FRAME NUMBER %d\n",
++		    hfnum.b.frnum);
++#endif
++	return hfnum.b.frnum;
++}
++
++int dwc_otg_hcd_start(dwc_otg_hcd_t * hcd,
++		      struct dwc_otg_hcd_function_ops *fops)
++{
++	int retval = 0;
++
++	hcd->fops = fops;
++	if (!dwc_otg_is_device_mode(hcd->core_if) &&
++		(!hcd->core_if->adp_enable || hcd->core_if->adp.adp_started)) {
++		dwc_otg_hcd_reinit(hcd);
++	} else {
++		retval = -DWC_E_NO_DEVICE;
++	}
++
++	return retval;
++}
++
++void *dwc_otg_hcd_get_priv_data(dwc_otg_hcd_t * hcd)
++{
++	return hcd->priv;
++}
++
++void dwc_otg_hcd_set_priv_data(dwc_otg_hcd_t * hcd, void *priv_data)
++{
++	hcd->priv = priv_data;
++}
++
++uint32_t dwc_otg_hcd_otg_port(dwc_otg_hcd_t * hcd)
++{
++	return hcd->otg_port;
++}
++
++uint32_t dwc_otg_hcd_is_b_host(dwc_otg_hcd_t * hcd)
++{
++	uint32_t is_b_host;
++	if (hcd->core_if->op_state == B_HOST) {
++		is_b_host = 1;
++	} else {
++		is_b_host = 0;
++	}
++
++	return is_b_host;
++}
++
++dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc(dwc_otg_hcd_t * hcd,
++					 int iso_desc_count, int atomic_alloc)
++{
++	dwc_otg_hcd_urb_t *dwc_otg_urb;
++	uint32_t size;
++
++	size =
++	    sizeof(*dwc_otg_urb) +
++	    iso_desc_count * sizeof(struct dwc_otg_hcd_iso_packet_desc);
++	if (atomic_alloc)
++		dwc_otg_urb = DWC_ALLOC_ATOMIC(size);
++	else
++		dwc_otg_urb = DWC_ALLOC(size);
++
++        if (dwc_otg_urb)
++		dwc_otg_urb->packet_count = iso_desc_count;
++        else {
++		DWC_ERROR("**** DWC OTG HCD URB alloc - "
++			"%salloc of %db failed\n",
++			atomic_alloc?"atomic ":"", size);
++	}
++	return dwc_otg_urb;
++}
++
++void dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_hcd_urb_t * dwc_otg_urb,
++				  uint8_t dev_addr, uint8_t ep_num,
++				  uint8_t ep_type, uint8_t ep_dir, uint16_t mps)
++{
++	dwc_otg_hcd_fill_pipe(&dwc_otg_urb->pipe_info, dev_addr, ep_num,
++			      ep_type, ep_dir, mps);
++#if 0
++	DWC_PRINTF
++	    ("addr = %d, ep_num = %d, ep_dir = 0x%x, ep_type = 0x%x, mps = %d\n",
++	     dev_addr, ep_num, ep_dir, ep_type, mps);
++#endif
++}
++
++void dwc_otg_hcd_urb_set_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
++				void *urb_handle, void *buf, dwc_dma_t dma,
++				uint32_t buflen, void *setup_packet,
++				dwc_dma_t setup_dma, uint32_t flags,
++				uint16_t interval)
++{
++	dwc_otg_urb->priv = urb_handle;
++	dwc_otg_urb->buf = buf;
++	dwc_otg_urb->dma = dma;
++	dwc_otg_urb->length = buflen;
++	dwc_otg_urb->setup_packet = setup_packet;
++	dwc_otg_urb->setup_dma = setup_dma;
++	dwc_otg_urb->flags = flags;
++	dwc_otg_urb->interval = interval;
++	dwc_otg_urb->status = -DWC_E_IN_PROGRESS;
++}
++
++uint32_t dwc_otg_hcd_urb_get_status(dwc_otg_hcd_urb_t * dwc_otg_urb)
++{
++	return dwc_otg_urb->status;
++}
++
++uint32_t dwc_otg_hcd_urb_get_actual_length(dwc_otg_hcd_urb_t * dwc_otg_urb)
++{
++	return dwc_otg_urb->actual_length;
++}
++
++uint32_t dwc_otg_hcd_urb_get_error_count(dwc_otg_hcd_urb_t * dwc_otg_urb)
++{
++	return dwc_otg_urb->error_count;
++}
++
++void dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
++					 int desc_num, uint32_t offset,
++					 uint32_t length)
++{
++	dwc_otg_urb->iso_descs[desc_num].offset = offset;
++	dwc_otg_urb->iso_descs[desc_num].length = length;
++}
++
++uint32_t dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_hcd_urb_t * dwc_otg_urb,
++					     int desc_num)
++{
++	return dwc_otg_urb->iso_descs[desc_num].status;
++}
++
++uint32_t dwc_otg_hcd_urb_get_iso_desc_actual_length(dwc_otg_hcd_urb_t *
++						    dwc_otg_urb, int desc_num)
++{
++	return dwc_otg_urb->iso_descs[desc_num].actual_length;
++}
++
++int dwc_otg_hcd_is_bandwidth_allocated(dwc_otg_hcd_t * hcd, void *ep_handle)
++{
++	int allocated = 0;
++	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
++
++	if (qh) {
++		if (!DWC_LIST_EMPTY(&qh->qh_list_entry)) {
++			allocated = 1;
++		}
++	}
++	return allocated;
++}
++
++int dwc_otg_hcd_is_bandwidth_freed(dwc_otg_hcd_t * hcd, void *ep_handle)
++{
++	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
++	int freed = 0;
++	DWC_ASSERT(qh, "qh is not allocated\n");
++
++	if (DWC_LIST_EMPTY(&qh->qh_list_entry)) {
++		freed = 1;
++	}
++
++	return freed;
++}
++
++uint8_t dwc_otg_hcd_get_ep_bandwidth(dwc_otg_hcd_t * hcd, void *ep_handle)
++{
++	dwc_otg_qh_t *qh = (dwc_otg_qh_t *) ep_handle;
++	DWC_ASSERT(qh, "qh is not allocated\n");
++	return qh->usecs;
++}
++
++void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * hcd)
++{
++#ifdef DEBUG
++	int num_channels;
++	int i;
++	gnptxsts_data_t np_tx_status;
++	hptxsts_data_t p_tx_status;
++
++	num_channels = hcd->core_if->core_params->host_channels;
++	DWC_PRINTF("\n");
++	DWC_PRINTF
++	    ("************************************************************\n");
++	DWC_PRINTF("HCD State:\n");
++	DWC_PRINTF("  Num channels: %d\n", num_channels);
++	for (i = 0; i < num_channels; i++) {
++		dwc_hc_t *hc = hcd->hc_ptr_array[i];
++		DWC_PRINTF("  Channel %d:\n", i);
++		DWC_PRINTF("    dev_addr: %d, ep_num: %d, ep_is_in: %d\n",
++			   hc->dev_addr, hc->ep_num, hc->ep_is_in);
++		DWC_PRINTF("    speed: %d\n", hc->speed);
++		DWC_PRINTF("    ep_type: %d\n", hc->ep_type);
++		DWC_PRINTF("    max_packet: %d\n", hc->max_packet);
++		DWC_PRINTF("    data_pid_start: %d\n", hc->data_pid_start);
++		DWC_PRINTF("    multi_count: %d\n", hc->multi_count);
++		DWC_PRINTF("    xfer_started: %d\n", hc->xfer_started);
++		DWC_PRINTF("    xfer_buff: %p\n", hc->xfer_buff);
++		DWC_PRINTF("    xfer_len: %d\n", hc->xfer_len);
++		DWC_PRINTF("    xfer_count: %d\n", hc->xfer_count);
++		DWC_PRINTF("    halt_on_queue: %d\n", hc->halt_on_queue);
++		DWC_PRINTF("    halt_pending: %d\n", hc->halt_pending);
++		DWC_PRINTF("    halt_status: %d\n", hc->halt_status);
++		DWC_PRINTF("    do_split: %d\n", hc->do_split);
++		DWC_PRINTF("    complete_split: %d\n", hc->complete_split);
++		DWC_PRINTF("    hub_addr: %d\n", hc->hub_addr);
++		DWC_PRINTF("    port_addr: %d\n", hc->port_addr);
++		DWC_PRINTF("    xact_pos: %d\n", hc->xact_pos);
++		DWC_PRINTF("    requests: %d\n", hc->requests);
++		DWC_PRINTF("    qh: %p\n", hc->qh);
++		if (hc->xfer_started) {
++			hfnum_data_t hfnum;
++			hcchar_data_t hcchar;
++			hctsiz_data_t hctsiz;
++			hcint_data_t hcint;
++			hcintmsk_data_t hcintmsk;
++			hfnum.d32 =
++			    DWC_READ_REG32(&hcd->core_if->
++					   host_if->host_global_regs->hfnum);
++			hcchar.d32 =
++			    DWC_READ_REG32(&hcd->core_if->host_if->
++					   hc_regs[i]->hcchar);
++			hctsiz.d32 =
++			    DWC_READ_REG32(&hcd->core_if->host_if->
++					   hc_regs[i]->hctsiz);
++			hcint.d32 =
++			    DWC_READ_REG32(&hcd->core_if->host_if->
++					   hc_regs[i]->hcint);
++			hcintmsk.d32 =
++			    DWC_READ_REG32(&hcd->core_if->host_if->
++					   hc_regs[i]->hcintmsk);
++			DWC_PRINTF("    hfnum: 0x%08x\n", hfnum.d32);
++			DWC_PRINTF("    hcchar: 0x%08x\n", hcchar.d32);
++			DWC_PRINTF("    hctsiz: 0x%08x\n", hctsiz.d32);
++			DWC_PRINTF("    hcint: 0x%08x\n", hcint.d32);
++			DWC_PRINTF("    hcintmsk: 0x%08x\n", hcintmsk.d32);
++		}
++		if (hc->xfer_started && hc->qh) {
++			dwc_otg_qtd_t *qtd;
++			dwc_otg_hcd_urb_t *urb;
++
++			DWC_CIRCLEQ_FOREACH(qtd, &hc->qh->qtd_list, qtd_list_entry) {
++				if (!qtd->in_process)
++					break;
++
++				urb = qtd->urb;
++			DWC_PRINTF("    URB Info:\n");
++			DWC_PRINTF("      qtd: %p, urb: %p\n", qtd, urb);
++			if (urb) {
++				DWC_PRINTF("      Dev: %d, EP: %d %s\n",
++					   dwc_otg_hcd_get_dev_addr(&urb->
++								    pipe_info),
++					   dwc_otg_hcd_get_ep_num(&urb->
++								  pipe_info),
++					   dwc_otg_hcd_is_pipe_in(&urb->
++								  pipe_info) ?
++					   "IN" : "OUT");
++				DWC_PRINTF("      Max packet size: %d\n",
++					   dwc_otg_hcd_get_mps(&urb->
++							       pipe_info));
++				DWC_PRINTF("      transfer_buffer: %p\n",
++					   urb->buf);
++				DWC_PRINTF("      transfer_dma: %p\n",
++					   (void *)urb->dma);
++				DWC_PRINTF("      transfer_buffer_length: %d\n",
++					   urb->length);
++					DWC_PRINTF("      actual_length: %d\n",
++						   urb->actual_length);
++				}
++			}
++		}
++	}
++	DWC_PRINTF("  non_periodic_channels: %d\n", hcd->non_periodic_channels);
++	DWC_PRINTF("  periodic_channels: %d\n", hcd->periodic_channels);
++	DWC_PRINTF("  periodic_usecs: %d\n", hcd->periodic_usecs);
++	np_tx_status.d32 =
++	    DWC_READ_REG32(&hcd->core_if->core_global_regs->gnptxsts);
++	DWC_PRINTF("  NP Tx Req Queue Space Avail: %d\n",
++		   np_tx_status.b.nptxqspcavail);
++	DWC_PRINTF("  NP Tx FIFO Space Avail: %d\n",
++		   np_tx_status.b.nptxfspcavail);
++	p_tx_status.d32 =
++	    DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hptxsts);
++	DWC_PRINTF("  P Tx Req Queue Space Avail: %d\n",
++		   p_tx_status.b.ptxqspcavail);
++	DWC_PRINTF("  P Tx FIFO Space Avail: %d\n", p_tx_status.b.ptxfspcavail);
++	dwc_otg_hcd_dump_frrem(hcd);
++	dwc_otg_dump_global_registers(hcd->core_if);
++	dwc_otg_dump_host_registers(hcd->core_if);
++	DWC_PRINTF
++	    ("************************************************************\n");
++	DWC_PRINTF("\n");
++#endif
++}
++
++#ifdef DEBUG
++void dwc_print_setup_data(uint8_t * setup)
++{
++	int i;
++	if (CHK_DEBUG_LEVEL(DBG_HCD)) {
++		DWC_PRINTF("Setup Data = MSB ");
++		for (i = 7; i >= 0; i--)
++			DWC_PRINTF("%02x ", setup[i]);
++		DWC_PRINTF("\n");
++		DWC_PRINTF("  bmRequestType Tranfer = %s\n",
++			   (setup[0] & 0x80) ? "Device-to-Host" :
++			   "Host-to-Device");
++		DWC_PRINTF("  bmRequestType Type = ");
++		switch ((setup[0] & 0x60) >> 5) {
++		case 0:
++			DWC_PRINTF("Standard\n");
++			break;
++		case 1:
++			DWC_PRINTF("Class\n");
++			break;
++		case 2:
++			DWC_PRINTF("Vendor\n");
++			break;
++		case 3:
++			DWC_PRINTF("Reserved\n");
++			break;
++		}
++		DWC_PRINTF("  bmRequestType Recipient = ");
++		switch (setup[0] & 0x1f) {
++		case 0:
++			DWC_PRINTF("Device\n");
++			break;
++		case 1:
++			DWC_PRINTF("Interface\n");
++			break;
++		case 2:
++			DWC_PRINTF("Endpoint\n");
++			break;
++		case 3:
++			DWC_PRINTF("Other\n");
++			break;
++		default:
++			DWC_PRINTF("Reserved\n");
++			break;
++		}
++		DWC_PRINTF("  bRequest = 0x%0x\n", setup[1]);
++		DWC_PRINTF("  wValue = 0x%0x\n", *((uint16_t *) & setup[2]));
++		DWC_PRINTF("  wIndex = 0x%0x\n", *((uint16_t *) & setup[4]));
++		DWC_PRINTF("  wLength = 0x%0x\n\n", *((uint16_t *) & setup[6]));
++	}
++}
++#endif
++
++void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * hcd)
++{
++#if 0
++	DWC_PRINTF("Frame remaining at SOF:\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->frrem_samples, hcd->frrem_accum,
++		   (hcd->frrem_samples > 0) ?
++		   hcd->frrem_accum / hcd->frrem_samples : 0);
++
++	DWC_PRINTF("\n");
++	DWC_PRINTF("Frame remaining at start_transfer (uframe 7):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->core_if->hfnum_7_samples,
++		   hcd->core_if->hfnum_7_frrem_accum,
++		   (hcd->core_if->hfnum_7_samples >
++		    0) ? hcd->core_if->hfnum_7_frrem_accum /
++		   hcd->core_if->hfnum_7_samples : 0);
++	DWC_PRINTF("Frame remaining at start_transfer (uframe 0):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->core_if->hfnum_0_samples,
++		   hcd->core_if->hfnum_0_frrem_accum,
++		   (hcd->core_if->hfnum_0_samples >
++		    0) ? hcd->core_if->hfnum_0_frrem_accum /
++		   hcd->core_if->hfnum_0_samples : 0);
++	DWC_PRINTF("Frame remaining at start_transfer (uframe 1-6):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->core_if->hfnum_other_samples,
++		   hcd->core_if->hfnum_other_frrem_accum,
++		   (hcd->core_if->hfnum_other_samples >
++		    0) ? hcd->core_if->hfnum_other_frrem_accum /
++		   hcd->core_if->hfnum_other_samples : 0);
++
++	DWC_PRINTF("\n");
++	DWC_PRINTF("Frame remaining at sample point A (uframe 7):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->hfnum_7_samples_a, hcd->hfnum_7_frrem_accum_a,
++		   (hcd->hfnum_7_samples_a > 0) ?
++		   hcd->hfnum_7_frrem_accum_a / hcd->hfnum_7_samples_a : 0);
++	DWC_PRINTF("Frame remaining at sample point A (uframe 0):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->hfnum_0_samples_a, hcd->hfnum_0_frrem_accum_a,
++		   (hcd->hfnum_0_samples_a > 0) ?
++		   hcd->hfnum_0_frrem_accum_a / hcd->hfnum_0_samples_a : 0);
++	DWC_PRINTF("Frame remaining at sample point A (uframe 1-6):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->hfnum_other_samples_a, hcd->hfnum_other_frrem_accum_a,
++		   (hcd->hfnum_other_samples_a > 0) ?
++		   hcd->hfnum_other_frrem_accum_a /
++		   hcd->hfnum_other_samples_a : 0);
++
++	DWC_PRINTF("\n");
++	DWC_PRINTF("Frame remaining at sample point B (uframe 7):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->hfnum_7_samples_b, hcd->hfnum_7_frrem_accum_b,
++		   (hcd->hfnum_7_samples_b > 0) ?
++		   hcd->hfnum_7_frrem_accum_b / hcd->hfnum_7_samples_b : 0);
++	DWC_PRINTF("Frame remaining at sample point B (uframe 0):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->hfnum_0_samples_b, hcd->hfnum_0_frrem_accum_b,
++		   (hcd->hfnum_0_samples_b > 0) ?
++		   hcd->hfnum_0_frrem_accum_b / hcd->hfnum_0_samples_b : 0);
++	DWC_PRINTF("Frame remaining at sample point B (uframe 1-6):\n");
++	DWC_PRINTF("  samples %u, accum %llu, avg %llu\n",
++		   hcd->hfnum_other_samples_b, hcd->hfnum_other_frrem_accum_b,
++		   (hcd->hfnum_other_samples_b > 0) ?
++		   hcd->hfnum_other_frrem_accum_b /
++		   hcd->hfnum_other_samples_b : 0);
++#endif
++}
++
++#endif /* DWC_DEVICE_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
+@@ -0,0 +1,870 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd.h $
++ * $Revision: #58 $
++ * $Date: 2011/09/15 $
++ * $Change: 1846647 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_DEVICE_ONLY
++#ifndef __DWC_HCD_H__
++#define __DWC_HCD_H__
++
++#include "dwc_otg_os_dep.h"
++#include "usb.h"
++#include "dwc_otg_hcd_if.h"
++#include "dwc_otg_core_if.h"
++#include "dwc_list.h"
++#include "dwc_otg_cil.h"
++#include "dwc_otg_fiq_fsm.h"
++#include "dwc_otg_driver.h"
++
++
++/**
++ * @file
++ *
++ * This file contains the structures, constants, and interfaces for
++ * the Host Contoller Driver (HCD).
++ *
++ * The Host Controller Driver (HCD) is responsible for translating requests
++ * from the USB Driver into the appropriate actions on the DWC_otg controller.
++ * It isolates the USBD from the specifics of the controller by providing an
++ * API to the USBD.
++ */
++
++struct dwc_otg_hcd_pipe_info {
++	uint8_t dev_addr;
++	uint8_t ep_num;
++	uint8_t pipe_type;
++	uint8_t pipe_dir;
++	uint16_t mps;
++};
++
++struct dwc_otg_hcd_iso_packet_desc {
++	uint32_t offset;
++	uint32_t length;
++	uint32_t actual_length;
++	uint32_t status;
++};
++
++struct dwc_otg_qtd;
++
++struct dwc_otg_hcd_urb {
++	void *priv;
++	struct dwc_otg_qtd *qtd;
++	void *buf;
++	dwc_dma_t dma;
++	void *setup_packet;
++	dwc_dma_t setup_dma;
++	uint32_t length;
++	uint32_t actual_length;
++	uint32_t status;
++	uint32_t error_count;
++	uint32_t packet_count;
++	uint32_t flags;
++	uint16_t interval;
++	struct dwc_otg_hcd_pipe_info pipe_info;
++	struct dwc_otg_hcd_iso_packet_desc iso_descs[0];
++};
++
++static inline uint8_t dwc_otg_hcd_get_ep_num(struct dwc_otg_hcd_pipe_info *pipe)
++{
++	return pipe->ep_num;
++}
++
++static inline uint8_t dwc_otg_hcd_get_pipe_type(struct dwc_otg_hcd_pipe_info
++						*pipe)
++{
++	return pipe->pipe_type;
++}
++
++static inline uint16_t dwc_otg_hcd_get_mps(struct dwc_otg_hcd_pipe_info *pipe)
++{
++	return pipe->mps;
++}
++
++static inline uint8_t dwc_otg_hcd_get_dev_addr(struct dwc_otg_hcd_pipe_info
++					       *pipe)
++{
++	return pipe->dev_addr;
++}
++
++static inline uint8_t dwc_otg_hcd_is_pipe_isoc(struct dwc_otg_hcd_pipe_info
++					       *pipe)
++{
++	return (pipe->pipe_type == UE_ISOCHRONOUS);
++}
++
++static inline uint8_t dwc_otg_hcd_is_pipe_int(struct dwc_otg_hcd_pipe_info
++					      *pipe)
++{
++	return (pipe->pipe_type == UE_INTERRUPT);
++}
++
++static inline uint8_t dwc_otg_hcd_is_pipe_bulk(struct dwc_otg_hcd_pipe_info
++					       *pipe)
++{
++	return (pipe->pipe_type == UE_BULK);
++}
++
++static inline uint8_t dwc_otg_hcd_is_pipe_control(struct dwc_otg_hcd_pipe_info
++						  *pipe)
++{
++	return (pipe->pipe_type == UE_CONTROL);
++}
++
++static inline uint8_t dwc_otg_hcd_is_pipe_in(struct dwc_otg_hcd_pipe_info *pipe)
++{
++	return (pipe->pipe_dir == UE_DIR_IN);
++}
++
++static inline uint8_t dwc_otg_hcd_is_pipe_out(struct dwc_otg_hcd_pipe_info
++					      *pipe)
++{
++	return (!dwc_otg_hcd_is_pipe_in(pipe));
++}
++
++static inline void dwc_otg_hcd_fill_pipe(struct dwc_otg_hcd_pipe_info *pipe,
++					 uint8_t devaddr, uint8_t ep_num,
++					 uint8_t pipe_type, uint8_t pipe_dir,
++					 uint16_t mps)
++{
++	pipe->dev_addr = devaddr;
++	pipe->ep_num = ep_num;
++	pipe->pipe_type = pipe_type;
++	pipe->pipe_dir = pipe_dir;
++	pipe->mps = mps;
++}
++
++/**
++ * Phases for control transfers.
++ */
++typedef enum dwc_otg_control_phase {
++	DWC_OTG_CONTROL_SETUP,
++	DWC_OTG_CONTROL_DATA,
++	DWC_OTG_CONTROL_STATUS
++} dwc_otg_control_phase_e;
++
++/** Transaction types. */
++typedef enum dwc_otg_transaction_type {
++	DWC_OTG_TRANSACTION_NONE          = 0,
++	DWC_OTG_TRANSACTION_PERIODIC      = 1,
++	DWC_OTG_TRANSACTION_NON_PERIODIC  = 2,
++	DWC_OTG_TRANSACTION_ALL           = DWC_OTG_TRANSACTION_PERIODIC + DWC_OTG_TRANSACTION_NON_PERIODIC
++} dwc_otg_transaction_type_e;
++
++struct dwc_otg_qh;
++
++/**
++ * A Queue Transfer Descriptor (QTD) holds the state of a bulk, control,
++ * interrupt, or isochronous transfer. A single QTD is created for each URB
++ * (of one of these types) submitted to the HCD. The transfer associated with
++ * a QTD may require one or multiple transactions.
++ *
++ * A QTD is linked to a Queue Head, which is entered in either the
++ * non-periodic or periodic schedule for execution. When a QTD is chosen for
++ * execution, some or all of its transactions may be executed. After
++ * execution, the state of the QTD is updated. The QTD may be retired if all
++ * its transactions are complete or if an error occurred. Otherwise, it
++ * remains in the schedule so more transactions can be executed later.
++ */
++typedef struct dwc_otg_qtd {
++	/**
++	 * Determines the PID of the next data packet for the data phase of
++	 * control transfers. Ignored for other transfer types.<br>
++	 * One of the following values:
++	 *	- DWC_OTG_HC_PID_DATA0
++	 *	- DWC_OTG_HC_PID_DATA1
++	 */
++	uint8_t data_toggle;
++
++	/** Current phase for control transfers (Setup, Data, or Status). */
++	dwc_otg_control_phase_e control_phase;
++
++	/** Keep track of the current split type
++	 * for FS/LS endpoints on a HS Hub */
++	uint8_t complete_split;
++
++	/** How many bytes transferred during SSPLIT OUT */
++	uint32_t ssplit_out_xfer_count;
++
++	/**
++	 * Holds the number of bus errors that have occurred for a transaction
++	 * within this transfer.
++	 */
++	uint8_t error_count;
++
++	/**
++	 * Index of the next frame descriptor for an isochronous transfer. A
++	 * frame descriptor describes the buffer position and length of the
++	 * data to be transferred in the next scheduled (micro)frame of an
++	 * isochronous transfer. It also holds status for that transaction.
++	 * The frame index starts at 0.
++	 */
++	uint16_t isoc_frame_index;
++
++	/** Position of the ISOC split on full/low speed */
++	uint8_t isoc_split_pos;
++
++	/** Position of the ISOC split in the buffer for the current frame */
++	uint16_t isoc_split_offset;
++
++	/** URB for this transfer */
++	struct dwc_otg_hcd_urb *urb;
++
++	struct dwc_otg_qh *qh;
++
++	/** This list of QTDs */
++	 DWC_CIRCLEQ_ENTRY(dwc_otg_qtd) qtd_list_entry;
++
++	/** Indicates if this QTD is currently processed by HW. */
++	uint8_t in_process;
++
++	/** Number of DMA descriptors for this QTD */
++	uint8_t n_desc;
++
++	/**
++	 * Last activated frame(packet) index.
++	 * Used in Descriptor DMA mode only.
++	 */
++	uint16_t isoc_frame_index_last;
++
++} dwc_otg_qtd_t;
++
++DWC_CIRCLEQ_HEAD(dwc_otg_qtd_list, dwc_otg_qtd);
++
++/**
++ * A Queue Head (QH) holds the static characteristics of an endpoint and
++ * maintains a list of transfers (QTDs) for that endpoint. A QH structure may
++ * be entered in either the non-periodic or periodic schedule.
++ */
++typedef struct dwc_otg_qh {
++	/**
++	 * Endpoint type.
++	 * One of the following values:
++	 *	- UE_CONTROL
++	 *	- UE_BULK
++	 *	- UE_INTERRUPT
++	 *	- UE_ISOCHRONOUS
++	 */
++	uint8_t ep_type;
++	uint8_t ep_is_in;
++
++	/** wMaxPacketSize Field of Endpoint Descriptor. */
++	uint16_t maxp;
++
++	/**
++	 * Device speed.
++	 * One of the following values:
++	 *	- DWC_OTG_EP_SPEED_LOW
++	 *	- DWC_OTG_EP_SPEED_FULL
++	 *	- DWC_OTG_EP_SPEED_HIGH
++	 */
++	uint8_t dev_speed;
++
++	/**
++	 * Determines the PID of the next data packet for non-control
++	 * transfers. Ignored for control transfers.<br>
++	 * One of the following values:
++	 *	- DWC_OTG_HC_PID_DATA0
++	 *	- DWC_OTG_HC_PID_DATA1
++	 */
++	uint8_t data_toggle;
++
++	/** Ping state if 1. */
++	uint8_t ping_state;
++
++	/**
++	 * List of QTDs for this QH.
++	 */
++	struct dwc_otg_qtd_list qtd_list;
++
++	/** Host channel currently processing transfers for this QH. */
++	struct dwc_hc *channel;
++
++	/** Full/low speed endpoint on high-speed hub requires split. */
++	uint8_t do_split;
++
++	/** @name Periodic schedule information */
++	/** @{ */
++
++	/** Bandwidth in microseconds per (micro)frame. */
++	uint16_t usecs;
++
++	/** Interval between transfers in (micro)frames. */
++	uint16_t interval;
++
++	/**
++	 * (micro)frame to initialize a periodic transfer. The transfer
++	 * executes in the following (micro)frame.
++	 */
++	uint16_t sched_frame;
++
++	/*
++	** Frame a NAK was received on this queue head, used to minimise NAK retransmission
++	*/
++	uint16_t nak_frame;
++
++	/** (micro)frame at which last start split was initialized. */
++	uint16_t start_split_frame;
++
++	/** @} */
++
++	/**
++	 * Used instead of original buffer if
++	 * it(physical address) is not dword-aligned.
++	 */
++	uint8_t *dw_align_buf;
++	dwc_dma_t dw_align_buf_dma;
++
++	/** Entry for QH in either the periodic or non-periodic schedule. */
++	dwc_list_link_t qh_list_entry;
++
++	/** @name Descriptor DMA support */
++	/** @{ */
++
++	/** Descriptor List. */
++	dwc_otg_host_dma_desc_t *desc_list;
++
++	/** Descriptor List physical address. */
++	dwc_dma_t desc_list_dma;
++
++	/**
++	 * Xfer Bytes array.
++	 * Each element corresponds to a descriptor and indicates
++	 * original XferSize size value for the descriptor.
++	 */
++	uint32_t *n_bytes;
++
++	/** Actual number of transfer descriptors in a list. */
++	uint16_t ntd;
++
++	/** First activated isochronous transfer descriptor index. */
++	uint8_t td_first;
++	/** Last activated isochronous transfer descriptor index. */
++	uint8_t td_last;
++
++	/** @} */
++
++
++	uint16_t speed;
++	uint16_t frame_usecs[8];
++
++	uint32_t skip_count;
++} dwc_otg_qh_t;
++
++DWC_CIRCLEQ_HEAD(hc_list, dwc_hc);
++
++typedef struct urb_tq_entry {
++	struct urb *urb;
++	DWC_TAILQ_ENTRY(urb_tq_entry) urb_tq_entries;
++} urb_tq_entry_t;
++
++DWC_TAILQ_HEAD(urb_list, urb_tq_entry);
++
++/**
++ * This structure holds the state of the HCD, including the non-periodic and
++ * periodic schedules.
++ */
++struct dwc_otg_hcd {
++	/** The DWC otg device pointer */
++	struct dwc_otg_device *otg_dev;
++	/** DWC OTG Core Interface Layer */
++	dwc_otg_core_if_t *core_if;
++
++	/** Function HCD driver callbacks */
++	struct dwc_otg_hcd_function_ops *fops;
++
++	/** Internal DWC HCD Flags */
++	volatile union dwc_otg_hcd_internal_flags {
++		uint32_t d32;
++		struct {
++			unsigned port_connect_status_change:1;
++			unsigned port_connect_status:1;
++			unsigned port_reset_change:1;
++			unsigned port_enable_change:1;
++			unsigned port_suspend_change:1;
++			unsigned port_over_current_change:1;
++			unsigned port_l1_change:1;
++			unsigned port_speed:2;
++			unsigned reserved:24;
++		} b;
++	} flags;
++
++	/**
++	 * Inactive items in the non-periodic schedule. This is a list of
++	 * Queue Heads. Transfers associated with these Queue Heads are not
++	 * currently assigned to a host channel.
++	 */
++	dwc_list_link_t non_periodic_sched_inactive;
++
++	/**
++	 * Active items in the non-periodic schedule. This is a list of
++	 * Queue Heads. Transfers associated with these Queue Heads are
++	 * currently assigned to a host channel.
++	 */
++	dwc_list_link_t non_periodic_sched_active;
++
++	/**
++	 * Pointer to the next Queue Head to process in the active
++	 * non-periodic schedule.
++	 */
++	dwc_list_link_t *non_periodic_qh_ptr;
++
++	/**
++	 * Inactive items in the periodic schedule. This is a list of QHs for
++	 * periodic transfers that are _not_ scheduled for the next frame.
++	 * Each QH in the list has an interval counter that determines when it
++	 * needs to be scheduled for execution. This scheduling mechanism
++	 * allows only a simple calculation for periodic bandwidth used (i.e.
++	 * must assume that all periodic transfers may need to execute in the
++	 * same frame). However, it greatly simplifies scheduling and should
++	 * be sufficient for the vast majority of OTG hosts, which need to
++	 * connect to a small number of peripherals at one time.
++	 *
++	 * Items move from this list to periodic_sched_ready when the QH
++	 * interval counter is 0 at SOF.
++	 */
++	dwc_list_link_t periodic_sched_inactive;
++
++	/**
++	 * List of periodic QHs that are ready for execution in the next
++	 * frame, but have not yet been assigned to host channels.
++	 *
++	 * Items move from this list to periodic_sched_assigned as host
++	 * channels become available during the current frame.
++	 */
++	dwc_list_link_t periodic_sched_ready;
++
++	/**
++	 * List of periodic QHs to be executed in the next frame that are
++	 * assigned to host channels.
++	 *
++	 * Items move from this list to periodic_sched_queued as the
++	 * transactions for the QH are queued to the DWC_otg controller.
++	 */
++	dwc_list_link_t periodic_sched_assigned;
++
++	/**
++	 * List of periodic QHs that have been queued for execution.
++	 *
++	 * Items move from this list to either periodic_sched_inactive or
++	 * periodic_sched_ready when the channel associated with the transfer
++	 * is released. If the interval for the QH is 1, the item moves to
++	 * periodic_sched_ready because it must be rescheduled for the next
++	 * frame. Otherwise, the item moves to periodic_sched_inactive.
++	 */
++	dwc_list_link_t periodic_sched_queued;
++
++	/**
++	 * Total bandwidth claimed so far for periodic transfers. This value
++	 * is in microseconds per (micro)frame. The assumption is that all
++	 * periodic transfers may occur in the same (micro)frame.
++	 */
++	uint16_t periodic_usecs;
++
++	/**
++	 * Total bandwidth claimed so far for all periodic transfers
++	 * in a frame.
++	 * This will include a mixture of HS and FS transfers.
++	 * Units are microseconds per (micro)frame.
++	 * We have a budget per frame and have to schedule
++	 * transactions accordingly.
++	 * Watch out for the fact that things are actually scheduled for the
++	 * "next frame".
++	 */
++	uint16_t                frame_usecs[8];
++
++
++	/**
++	 * Frame number read from the core at SOF. The value ranges from 0 to
++	 * DWC_HFNUM_MAX_FRNUM.
++	 */
++	uint16_t frame_number;
++
++	/**
++	 * Count of periodic QHs, if using several eps. For SOF enable/disable.
++	 */
++	uint16_t periodic_qh_count;
++
++	/**
++	 * Free host channels in the controller. This is a list of
++	 * dwc_hc_t items.
++	 */
++	struct hc_list free_hc_list;
++	/**
++	 * Number of host channels assigned to periodic transfers. Currently
++	 * assuming that there is a dedicated host channel for each periodic
++	 * transaction and at least one host channel available for
++	 * non-periodic transactions.
++	 */
++	int periodic_channels; /* microframe_schedule==0 */
++
++	/**
++	 * Number of host channels assigned to non-periodic transfers.
++	 */
++	int non_periodic_channels; /* microframe_schedule==0 */
++
++	/**
++	 * Number of host channels assigned to non-periodic transfers.
++	 */
++	int available_host_channels;
++
++	/**
++	 * Array of pointers to the host channel descriptors. Allows accessing
++	 * a host channel descriptor given the host channel number. This is
++	 * useful in interrupt handlers.
++	 */
++	struct dwc_hc *hc_ptr_array[MAX_EPS_CHANNELS];
++
++	/**
++	 * Buffer to use for any data received during the status phase of a
++	 * control transfer. Normally no data is transferred during the status
++	 * phase. This buffer is used as a bit bucket.
++	 */
++	uint8_t *status_buf;
++
++	/**
++	 * DMA address for status_buf.
++	 */
++	dma_addr_t status_buf_dma;
++#define DWC_OTG_HCD_STATUS_BUF_SIZE 64
++
++	/**
++	 * Connection timer. An OTG host must display a message if the device
++	 * does not connect. Started when the VBus power is turned on via
++	 * sysfs attribute "buspower".
++	 */
++	dwc_timer_t *conn_timer;
++
++	/* Tasket to do a reset */
++	dwc_tasklet_t *reset_tasklet;
++
++	dwc_tasklet_t *completion_tasklet;
++	struct urb_list completed_urb_list;
++
++	/*  */
++	dwc_spinlock_t *lock;
++	/**
++	 * Private data that could be used by OS wrapper.
++	 */
++	void *priv;
++
++	uint8_t otg_port;
++
++	/** Frame List */
++	uint32_t *frame_list;
++
++	/** Hub - Port assignment */
++	int hub_port[128];
++#ifdef FIQ_DEBUG
++	int hub_port_alloc[2048];
++#endif
++
++	/** Frame List DMA address */
++	dma_addr_t frame_list_dma;
++
++	struct fiq_stack *fiq_stack;
++	struct fiq_state *fiq_state;
++
++	/** Virtual address for split transaction DMA bounce buffers */
++	struct fiq_dma_blob *fiq_dmab;
++
++#ifdef DEBUG
++	uint32_t frrem_samples;
++	uint64_t frrem_accum;
++
++	uint32_t hfnum_7_samples_a;
++	uint64_t hfnum_7_frrem_accum_a;
++	uint32_t hfnum_0_samples_a;
++	uint64_t hfnum_0_frrem_accum_a;
++	uint32_t hfnum_other_samples_a;
++	uint64_t hfnum_other_frrem_accum_a;
++
++	uint32_t hfnum_7_samples_b;
++	uint64_t hfnum_7_frrem_accum_b;
++	uint32_t hfnum_0_samples_b;
++	uint64_t hfnum_0_frrem_accum_b;
++	uint32_t hfnum_other_samples_b;
++	uint64_t hfnum_other_frrem_accum_b;
++#endif
++};
++
++static inline struct device *dwc_otg_hcd_to_dev(struct dwc_otg_hcd *hcd)
++{
++	return &hcd->otg_dev->os_dep.platformdev->dev;
++}
++
++/** @name Transaction Execution Functions */
++/** @{ */
++extern dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t
++								  * hcd);
++extern void dwc_otg_hcd_queue_transactions(dwc_otg_hcd_t * hcd,
++					   dwc_otg_transaction_type_e tr_type);
++
++int dwc_otg_hcd_allocate_port(dwc_otg_hcd_t * hcd, dwc_otg_qh_t *qh);
++void dwc_otg_hcd_release_port(dwc_otg_hcd_t * dwc_otg_hcd, dwc_otg_qh_t *qh);
++
++extern int fiq_fsm_queue_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh);
++extern int fiq_fsm_transaction_suitable(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh);
++extern void dwc_otg_cleanup_fiq_channel(dwc_otg_hcd_t *hcd, uint32_t num);
++
++/** @} */
++
++/** @name Interrupt Handler Functions */
++/** @{ */
++extern int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t * dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t *
++							 dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t *
++							dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t *
++							   dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_incomplete_periodic_intr(dwc_otg_hcd_t *
++							   dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_conn_id_status_change_intr(dwc_otg_hcd_t *
++							     dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_disconnect_intr(dwc_otg_hcd_t * dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t * dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t * dwc_otg_hcd,
++					    uint32_t num);
++extern int32_t dwc_otg_hcd_handle_session_req_intr(dwc_otg_hcd_t * dwc_otg_hcd);
++extern int32_t dwc_otg_hcd_handle_wakeup_detected_intr(dwc_otg_hcd_t *
++						       dwc_otg_hcd);
++/** @} */
++
++/** @name Schedule Queue Functions */
++/** @{ */
++
++/* Implemented in dwc_otg_hcd_queue.c */
++extern dwc_otg_qh_t *dwc_otg_hcd_qh_create(dwc_otg_hcd_t * hcd,
++					   dwc_otg_hcd_urb_t * urb, int atomic_alloc);
++extern void dwc_otg_hcd_qh_free(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
++extern int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
++extern void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
++extern void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
++				      int sched_csplit);
++
++/** Remove and free a QH */
++static inline void dwc_otg_hcd_qh_remove_and_free(dwc_otg_hcd_t * hcd,
++						  dwc_otg_qh_t * qh)
++{
++	dwc_irqflags_t flags;
++	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
++	dwc_otg_hcd_qh_remove(hcd, qh);
++	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++	dwc_otg_hcd_qh_free(hcd, qh);
++}
++
++/** Allocates memory for a QH structure.
++ * @return Returns the memory allocate or NULL on error. */
++static inline dwc_otg_qh_t *dwc_otg_hcd_qh_alloc(int atomic_alloc)
++{
++	if (atomic_alloc)
++		return (dwc_otg_qh_t *) DWC_ALLOC_ATOMIC(sizeof(dwc_otg_qh_t));
++	else
++		return (dwc_otg_qh_t *) DWC_ALLOC(sizeof(dwc_otg_qh_t));
++}
++
++extern dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(dwc_otg_hcd_urb_t * urb,
++					     int atomic_alloc);
++extern void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t * qtd, dwc_otg_hcd_urb_t * urb);
++extern int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * qtd, dwc_otg_hcd_t * dwc_otg_hcd,
++			       dwc_otg_qh_t ** qh, int atomic_alloc);
++
++/** Allocates memory for a QTD structure.
++ * @return Returns the memory allocate or NULL on error. */
++static inline dwc_otg_qtd_t *dwc_otg_hcd_qtd_alloc(int atomic_alloc)
++{
++	if (atomic_alloc)
++		return (dwc_otg_qtd_t *) DWC_ALLOC_ATOMIC(sizeof(dwc_otg_qtd_t));
++	else
++		return (dwc_otg_qtd_t *) DWC_ALLOC(sizeof(dwc_otg_qtd_t));
++}
++
++/** Frees the memory for a QTD structure.  QTD should already be removed from
++ * list.
++ * @param qtd QTD to free.*/
++static inline void dwc_otg_hcd_qtd_free(dwc_otg_qtd_t * qtd)
++{
++	DWC_FREE(qtd);
++}
++
++/** Removes a QTD from list.
++ * @param hcd HCD instance.
++ * @param qtd QTD to remove from list.
++ * @param qh QTD belongs to.
++ */
++static inline void dwc_otg_hcd_qtd_remove(dwc_otg_hcd_t * hcd,
++					  dwc_otg_qtd_t * qtd,
++					  dwc_otg_qh_t * qh)
++{
++	DWC_CIRCLEQ_REMOVE(&qh->qtd_list, qtd, qtd_list_entry);
++}
++
++/** Remove and free a QTD
++  * Need to disable IRQ and hold hcd lock while calling this function out of
++  * interrupt servicing chain */
++static inline void dwc_otg_hcd_qtd_remove_and_free(dwc_otg_hcd_t * hcd,
++						   dwc_otg_qtd_t * qtd,
++						   dwc_otg_qh_t * qh)
++{
++	dwc_otg_hcd_qtd_remove(hcd, qtd, qh);
++	dwc_otg_hcd_qtd_free(qtd);
++}
++
++/** @} */
++
++/** @name Descriptor DMA Supporting Functions */
++/** @{ */
++
++extern void dwc_otg_hcd_start_xfer_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
++extern void dwc_otg_hcd_complete_xfer_ddma(dwc_otg_hcd_t * hcd,
++					   dwc_hc_t * hc,
++					   dwc_otg_hc_regs_t * hc_regs,
++					   dwc_otg_halt_status_e halt_status);
++
++extern int dwc_otg_hcd_qh_init_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
++extern void dwc_otg_hcd_qh_free_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh);
++
++/** @} */
++
++/** @name Internal Functions */
++/** @{ */
++dwc_otg_qh_t *dwc_urb_to_qh(dwc_otg_hcd_urb_t * urb);
++/** @} */
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++extern int dwc_otg_hcd_get_hc_for_lpm_tran(dwc_otg_hcd_t * hcd,
++					   uint8_t devaddr);
++extern void dwc_otg_hcd_free_hc_from_lpm(dwc_otg_hcd_t * hcd);
++#endif
++
++/** Gets the QH that contains the list_head */
++#define dwc_list_to_qh(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qh_t, qh_list_entry)
++
++/** Gets the QTD that contains the list_head */
++#define dwc_list_to_qtd(_list_head_ptr_) container_of(_list_head_ptr_, dwc_otg_qtd_t, qtd_list_entry)
++
++/** Check if QH is non-periodic  */
++#define dwc_qh_is_non_per(_qh_ptr_) ((_qh_ptr_->ep_type == UE_BULK) || \
++				     (_qh_ptr_->ep_type == UE_CONTROL))
++
++/** High bandwidth multiplier as encoded in highspeed endpoint descriptors */
++#define dwc_hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
++
++/** Packet size for any kind of endpoint descriptor */
++#define dwc_max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
++
++/**
++ * Returns true if _frame1 is less than or equal to _frame2. The comparison is
++ * done modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the
++ * frame number when the max frame number is reached.
++ */
++static inline int dwc_frame_num_le(uint16_t frame1, uint16_t frame2)
++{
++	return ((frame2 - frame1) & DWC_HFNUM_MAX_FRNUM) <=
++	    (DWC_HFNUM_MAX_FRNUM >> 1);
++}
++
++/**
++ * Returns true if _frame1 is greater than _frame2. The comparison is done
++ * modulo DWC_HFNUM_MAX_FRNUM. This accounts for the rollover of the frame
++ * number when the max frame number is reached.
++ */
++static inline int dwc_frame_num_gt(uint16_t frame1, uint16_t frame2)
++{
++	return (frame1 != frame2) &&
++	    (((frame1 - frame2) & DWC_HFNUM_MAX_FRNUM) <
++	     (DWC_HFNUM_MAX_FRNUM >> 1));
++}
++
++/**
++ * Increments _frame by the amount specified by _inc. The addition is done
++ * modulo DWC_HFNUM_MAX_FRNUM. Returns the incremented value.
++ */
++static inline uint16_t dwc_frame_num_inc(uint16_t frame, uint16_t inc)
++{
++	return (frame + inc) & DWC_HFNUM_MAX_FRNUM;
++}
++
++static inline uint16_t dwc_full_frame_num(uint16_t frame)
++{
++	return (frame & DWC_HFNUM_MAX_FRNUM) >> 3;
++}
++
++static inline uint16_t dwc_micro_frame_num(uint16_t frame)
++{
++	return frame & 0x7;
++}
++
++extern void init_hcd_usecs(dwc_otg_hcd_t *_hcd);
++
++void dwc_otg_hcd_save_data_toggle(dwc_hc_t * hc,
++				  dwc_otg_hc_regs_t * hc_regs,
++				  dwc_otg_qtd_t * qtd);
++
++#ifdef DEBUG
++/**
++ * Macro to sample the remaining PHY clocks left in the current frame. This
++ * may be used during debugging to determine the average time it takes to
++ * execute sections of code. There are two possible sample points, "a" and
++ * "b", so the _letter argument must be one of these values.
++ *
++ * To dump the average sample times, read the "hcd_frrem" sysfs attribute. For
++ * example, "cat /sys/devices/lm0/hcd_frrem".
++ */
++#define dwc_sample_frrem(_hcd, _qh, _letter) \
++{ \
++	hfnum_data_t hfnum; \
++	dwc_otg_qtd_t *qtd; \
++	qtd = list_entry(_qh->qtd_list.next, dwc_otg_qtd_t, qtd_list_entry); \
++	if (usb_pipeint(qtd->urb->pipe) && _qh->start_split_frame != 0 && !qtd->complete_split) { \
++		hfnum.d32 = DWC_READ_REG32(&_hcd->core_if->host_if->host_global_regs->hfnum); \
++		switch (hfnum.b.frnum & 0x7) { \
++		case 7: \
++			_hcd->hfnum_7_samples_##_letter++; \
++			_hcd->hfnum_7_frrem_accum_##_letter += hfnum.b.frrem; \
++			break; \
++		case 0: \
++			_hcd->hfnum_0_samples_##_letter++; \
++			_hcd->hfnum_0_frrem_accum_##_letter += hfnum.b.frrem; \
++			break; \
++		default: \
++			_hcd->hfnum_other_samples_##_letter++; \
++			_hcd->hfnum_other_frrem_accum_##_letter += hfnum.b.frrem; \
++			break; \
++		} \
++	} \
++}
++#else
++#define dwc_sample_frrem(_hcd, _qh, _letter)
++#endif
++#endif
++#endif /* DWC_DEVICE_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
+@@ -0,0 +1,1134 @@
++/*==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_ddma.c $
++ * $Revision: #10 $
++ * $Date: 2011/10/20 $
++ * $Change: 1869464 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_DEVICE_ONLY
++
++/** @file
++ * This file contains Descriptor DMA support implementation for host mode.
++ */
++
++#include "dwc_otg_hcd.h"
++#include "dwc_otg_regs.h"
++
++extern bool microframe_schedule;
++
++static inline uint8_t frame_list_idx(uint16_t frame)
++{
++	return (frame & (MAX_FRLIST_EN_NUM - 1));
++}
++
++static inline uint16_t desclist_idx_inc(uint16_t idx, uint16_t inc, uint8_t speed)
++{
++	return (idx + inc) &
++	    (((speed ==
++	       DWC_OTG_EP_SPEED_HIGH) ? MAX_DMA_DESC_NUM_HS_ISOC :
++	      MAX_DMA_DESC_NUM_GENERIC) - 1);
++}
++
++static inline uint16_t desclist_idx_dec(uint16_t idx, uint16_t inc, uint8_t speed)
++{
++	return (idx - inc) &
++	    (((speed ==
++	       DWC_OTG_EP_SPEED_HIGH) ? MAX_DMA_DESC_NUM_HS_ISOC :
++	      MAX_DMA_DESC_NUM_GENERIC) - 1);
++}
++
++static inline uint16_t max_desc_num(dwc_otg_qh_t * qh)
++{
++	return (((qh->ep_type == UE_ISOCHRONOUS)
++		 && (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH))
++		? MAX_DMA_DESC_NUM_HS_ISOC : MAX_DMA_DESC_NUM_GENERIC);
++}
++static inline uint16_t frame_incr_val(dwc_otg_qh_t * qh)
++{
++	return ((qh->dev_speed == DWC_OTG_EP_SPEED_HIGH)
++		? ((qh->interval + 8 - 1) / 8)
++		: qh->interval);
++}
++
++static int desc_list_alloc(struct device *dev, dwc_otg_qh_t * qh)
++{
++	int retval = 0;
++
++	qh->desc_list = (dwc_otg_host_dma_desc_t *)
++	    DWC_DMA_ALLOC(dev, sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh),
++			  &qh->desc_list_dma);
++
++	if (!qh->desc_list) {
++		retval = -DWC_E_NO_MEMORY;
++		DWC_ERROR("%s: DMA descriptor list allocation failed\n", __func__);
++
++	}
++
++	dwc_memset(qh->desc_list, 0x00,
++		   sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh));
++
++	qh->n_bytes =
++	    (uint32_t *) DWC_ALLOC(sizeof(uint32_t) * max_desc_num(qh));
++
++	if (!qh->n_bytes) {
++		retval = -DWC_E_NO_MEMORY;
++		DWC_ERROR
++		    ("%s: Failed to allocate array for descriptors' size actual values\n",
++		     __func__);
++
++	}
++	return retval;
++
++}
++
++static void desc_list_free(struct device *dev, dwc_otg_qh_t * qh)
++{
++	if (qh->desc_list) {
++		DWC_DMA_FREE(dev, max_desc_num(qh), qh->desc_list,
++			     qh->desc_list_dma);
++		qh->desc_list = NULL;
++	}
++
++	if (qh->n_bytes) {
++		DWC_FREE(qh->n_bytes);
++		qh->n_bytes = NULL;
++	}
++}
++
++static int frame_list_alloc(dwc_otg_hcd_t * hcd)
++{
++	struct device *dev = dwc_otg_hcd_to_dev(hcd);
++	int retval = 0;
++
++	if (hcd->frame_list)
++		return 0;
++
++	hcd->frame_list = DWC_DMA_ALLOC(dev, 4 * MAX_FRLIST_EN_NUM,
++					&hcd->frame_list_dma);
++	if (!hcd->frame_list) {
++		retval = -DWC_E_NO_MEMORY;
++		DWC_ERROR("%s: Frame List allocation failed\n", __func__);
++	}
++
++	dwc_memset(hcd->frame_list, 0x00, 4 * MAX_FRLIST_EN_NUM);
++
++	return retval;
++}
++
++static void frame_list_free(dwc_otg_hcd_t * hcd)
++{
++	struct device *dev = dwc_otg_hcd_to_dev(hcd);
++
++	if (!hcd->frame_list)
++		return;
++
++	DWC_DMA_FREE(dev, 4 * MAX_FRLIST_EN_NUM, hcd->frame_list, hcd->frame_list_dma);
++	hcd->frame_list = NULL;
++}
++
++static void per_sched_enable(dwc_otg_hcd_t * hcd, uint16_t fr_list_en)
++{
++
++	hcfg_data_t hcfg;
++
++	hcfg.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hcfg);
++
++	if (hcfg.b.perschedena) {
++		/* already enabled */
++		return;
++	}
++
++	DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hflbaddr,
++			hcd->frame_list_dma);
++
++	switch (fr_list_en) {
++	case 64:
++		hcfg.b.frlisten = 3;
++		break;
++	case 32:
++		hcfg.b.frlisten = 2;
++		break;
++	case 16:
++		hcfg.b.frlisten = 1;
++		break;
++	case 8:
++		hcfg.b.frlisten = 0;
++		break;
++	default:
++		break;
++	}
++
++	hcfg.b.perschedena = 1;
++
++	DWC_DEBUGPL(DBG_HCD, "Enabling Periodic schedule\n");
++	DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hcfg, hcfg.d32);
++
++}
++
++static void per_sched_disable(dwc_otg_hcd_t * hcd)
++{
++	hcfg_data_t hcfg;
++
++	hcfg.d32 = DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hcfg);
++
++	if (!hcfg.b.perschedena) {
++		/* already disabled */
++		return;
++	}
++	hcfg.b.perschedena = 0;
++
++	DWC_DEBUGPL(DBG_HCD, "Disabling Periodic schedule\n");
++	DWC_WRITE_REG32(&hcd->core_if->host_if->host_global_regs->hcfg, hcfg.d32);
++}
++
++/*
++ * Activates/Deactivates FrameList entries for the channel
++ * based on endpoint servicing period.
++ */
++void update_frame_list(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, uint8_t enable)
++{
++	uint16_t i, j, inc;
++	dwc_hc_t *hc = NULL;
++
++	if (!qh->channel) {
++		DWC_ERROR("qh->channel = %p", qh->channel);
++		return;
++	}
++
++	if (!hcd) {
++		DWC_ERROR("------hcd = %p", hcd);
++		return;
++	}
++
++	if (!hcd->frame_list) {
++		DWC_ERROR("-------hcd->frame_list = %p", hcd->frame_list);
++		return;
++	}
++
++	hc = qh->channel;
++	inc = frame_incr_val(qh);
++	if (qh->ep_type == UE_ISOCHRONOUS)
++		i = frame_list_idx(qh->sched_frame);
++	else
++		i = 0;
++
++	j = i;
++	do {
++		if (enable)
++			hcd->frame_list[j] |= (1 << hc->hc_num);
++		else
++			hcd->frame_list[j] &= ~(1 << hc->hc_num);
++		j = (j + inc) & (MAX_FRLIST_EN_NUM - 1);
++	}
++	while (j != i);
++	if (!enable)
++		return;
++	hc->schinfo = 0;
++	if (qh->channel->speed == DWC_OTG_EP_SPEED_HIGH) {
++		j = 1;
++		/* TODO - check this */
++		inc = (8 + qh->interval - 1) / qh->interval;
++		for (i = 0; i < inc; i++) {
++			hc->schinfo |= j;
++			j = j << qh->interval;
++		}
++	} else {
++		hc->schinfo = 0xff;
++	}
++}
++
++#if 1
++void dump_frame_list(dwc_otg_hcd_t * hcd)
++{
++	int i = 0;
++	DWC_PRINTF("--FRAME LIST (hex) --\n");
++	for (i = 0; i < MAX_FRLIST_EN_NUM; i++) {
++		DWC_PRINTF("%x\t", hcd->frame_list[i]);
++		if (!(i % 8) && i)
++			DWC_PRINTF("\n");
++	}
++	DWC_PRINTF("\n----\n");
++
++}
++#endif
++
++static void release_channel_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	dwc_hc_t *hc = qh->channel;
++	if (dwc_qh_is_non_per(qh)) {
++		if (!microframe_schedule)
++			hcd->non_periodic_channels--;
++		else
++			hcd->available_host_channels++;
++	} else
++		update_frame_list(hcd, qh, 0);
++
++	/*
++	 * The condition is added to prevent double cleanup try in case of device
++	 * disconnect. See channel cleanup in dwc_otg_hcd_disconnect_cb().
++	 */
++	if (hc->qh) {
++		dwc_otg_hc_cleanup(hcd->core_if, hc);
++		DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
++		hc->qh = NULL;
++	}
++
++	qh->channel = NULL;
++	qh->ntd = 0;
++
++	if (qh->desc_list) {
++		dwc_memset(qh->desc_list, 0x00,
++			   sizeof(dwc_otg_host_dma_desc_t) * max_desc_num(qh));
++	}
++}
++
++/**
++ * Initializes a QH structure's Descriptor DMA related members.
++ * Allocates memory for descriptor list.
++ * On first periodic QH, allocates memory for FrameList
++ * and enables periodic scheduling.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh The QH to init.
++ *
++ * @return 0 if successful, negative error code otherwise.
++ */
++int dwc_otg_hcd_qh_init_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	struct device *dev = dwc_otg_hcd_to_dev(hcd);
++	int retval = 0;
++
++	if (qh->do_split) {
++		DWC_ERROR("SPLIT Transfers are not supported in Descriptor DMA.\n");
++		return -1;
++	}
++
++	retval = desc_list_alloc(dev, qh);
++
++	if ((retval == 0)
++	    && (qh->ep_type == UE_ISOCHRONOUS || qh->ep_type == UE_INTERRUPT)) {
++		if (!hcd->frame_list) {
++			retval = frame_list_alloc(hcd);
++			/* Enable periodic schedule on first periodic QH */
++			if (retval == 0)
++				per_sched_enable(hcd, MAX_FRLIST_EN_NUM);
++		}
++	}
++
++	qh->ntd = 0;
++
++	return retval;
++}
++
++/**
++ * Frees descriptor list memory associated with the QH.
++ * If QH is periodic and the last, frees FrameList memory
++ * and disables periodic scheduling.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh The QH to init.
++ */
++void dwc_otg_hcd_qh_free_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	struct device *dev = dwc_otg_hcd_to_dev(hcd);
++
++	desc_list_free(dev, qh);
++
++	/*
++	 * Channel still assigned due to some reasons.
++	 * Seen on Isoc URB dequeue. Channel halted but no subsequent
++	 * ChHalted interrupt to release the channel. Afterwards
++	 * when it comes here from endpoint disable routine
++	 * channel remains assigned.
++	 */
++	if (qh->channel)
++		release_channel_ddma(hcd, qh);
++
++	if ((qh->ep_type == UE_ISOCHRONOUS || qh->ep_type == UE_INTERRUPT)
++	    && (microframe_schedule || !hcd->periodic_channels) && hcd->frame_list) {
++
++		per_sched_disable(hcd);
++		frame_list_free(hcd);
++	}
++}
++
++static uint8_t frame_to_desc_idx(dwc_otg_qh_t * qh, uint16_t frame_idx)
++{
++	if (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) {
++		/*
++		 * Descriptor set(8 descriptors) index
++		 * which is 8-aligned.
++		 */
++		return (frame_idx & ((MAX_DMA_DESC_NUM_HS_ISOC / 8) - 1)) * 8;
++	} else {
++		return (frame_idx & (MAX_DMA_DESC_NUM_GENERIC - 1));
++	}
++}
++
++/*
++ * Determine starting frame for Isochronous transfer.
++ * Few frames skipped to prevent race condition with HC.
++ */
++static uint8_t calc_starting_frame(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
++				   uint8_t * skip_frames)
++{
++	uint16_t frame = 0;
++	hcd->frame_number = dwc_otg_hcd_get_frame_number(hcd);
++
++	/* sched_frame is always frame number(not uFrame) both in FS and HS !! */
++
++	/*
++	 * skip_frames is used to limit activated descriptors number
++	 * to avoid the situation when HC services the last activated
++	 * descriptor firstly.
++	 * Example for FS:
++	 * Current frame is 1, scheduled frame is 3. Since HC always fetches the descriptor
++	 * corresponding to curr_frame+1, the descriptor corresponding to frame 2
++	 * will be fetched. If the number of descriptors is max=64 (or greather) the
++	 * list will be fully programmed with Active descriptors and it is possible
++	 * case(rare) that the latest descriptor(considering rollback) corresponding
++	 * to frame 2 will be serviced first. HS case is more probable because, in fact,
++	 * up to 11 uframes(16 in the code) may be skipped.
++	 */
++	if (qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) {
++		/*
++		 * Consider uframe counter also, to start xfer asap.
++		 * If half of the frame elapsed skip 2 frames otherwise
++		 * just 1 frame.
++		 * Starting descriptor index must be 8-aligned, so
++		 * if the current frame is near to complete the next one
++		 * is skipped as well.
++		 */
++
++		if (dwc_micro_frame_num(hcd->frame_number) >= 5) {
++			*skip_frames = 2 * 8;
++			frame = dwc_frame_num_inc(hcd->frame_number, *skip_frames);
++		} else {
++			*skip_frames = 1 * 8;
++			frame = dwc_frame_num_inc(hcd->frame_number, *skip_frames);
++		}
++
++		frame = dwc_full_frame_num(frame);
++	} else {
++		/*
++		 * Two frames are skipped for FS - the current and the next.
++		 * But for descriptor programming, 1 frame(descriptor) is enough,
++		 * see example above.
++		 */
++		*skip_frames = 1;
++		frame = dwc_frame_num_inc(hcd->frame_number, 2);
++	}
++
++	return frame;
++}
++
++/*
++ * Calculate initial descriptor index for isochronous transfer
++ * based on scheduled frame.
++ */
++static uint8_t recalc_initial_desc_idx(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	uint16_t frame = 0, fr_idx, fr_idx_tmp;
++	uint8_t skip_frames = 0;
++	/*
++	 * With current ISOC processing algorithm the channel is being
++	 * released when no more QTDs in the list(qh->ntd == 0).
++	 * Thus this function is called only when qh->ntd == 0 and qh->channel == 0.
++	 *
++	 * So qh->channel != NULL branch is not used and just not removed from the
++	 * source file. It is required for another possible approach which is,
++	 * do not disable and release the channel when ISOC session completed,
++	 * just move QH to inactive schedule until new QTD arrives.
++	 * On new QTD, the QH moved back to 'ready' schedule,
++	 * starting frame and therefore starting desc_index are recalculated.
++	 * In this case channel is released only on ep_disable.
++	 */
++
++	/* Calculate starting descriptor index. For INTERRUPT endpoint it is always 0. */
++	if (qh->channel) {
++		frame = calc_starting_frame(hcd, qh, &skip_frames);
++		/*
++		 * Calculate initial descriptor index based on FrameList current bitmap
++		 * and servicing period.
++		 */
++		fr_idx_tmp = frame_list_idx(frame);
++		fr_idx =
++		    (MAX_FRLIST_EN_NUM + frame_list_idx(qh->sched_frame) -
++		     fr_idx_tmp)
++		    % frame_incr_val(qh);
++		fr_idx = (fr_idx + fr_idx_tmp) % MAX_FRLIST_EN_NUM;
++	} else {
++		qh->sched_frame = calc_starting_frame(hcd, qh, &skip_frames);
++		fr_idx = frame_list_idx(qh->sched_frame);
++	}
++
++	qh->td_first = qh->td_last = frame_to_desc_idx(qh, fr_idx);
++
++	return skip_frames;
++}
++
++#define	ISOC_URB_GIVEBACK_ASAP
++
++#define MAX_ISOC_XFER_SIZE_FS 1023
++#define MAX_ISOC_XFER_SIZE_HS 3072
++#define DESCNUM_THRESHOLD 4
++
++static void init_isoc_dma_desc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
++			       uint8_t skip_frames)
++{
++	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
++	dwc_otg_qtd_t *qtd;
++	dwc_otg_host_dma_desc_t *dma_desc;
++	uint16_t idx, inc, n_desc, ntd_max, max_xfer_size;
++
++	idx = qh->td_last;
++	inc = qh->interval;
++	n_desc = 0;
++
++	ntd_max = (max_desc_num(qh) + qh->interval - 1) / qh->interval;
++	if (skip_frames && !qh->channel)
++		ntd_max = ntd_max - skip_frames / qh->interval;
++
++	max_xfer_size =
++	    (qh->dev_speed ==
++	     DWC_OTG_EP_SPEED_HIGH) ? MAX_ISOC_XFER_SIZE_HS :
++	    MAX_ISOC_XFER_SIZE_FS;
++
++	DWC_CIRCLEQ_FOREACH(qtd, &qh->qtd_list, qtd_list_entry) {
++		while ((qh->ntd < ntd_max)
++		       && (qtd->isoc_frame_index_last <
++			   qtd->urb->packet_count)) {
++
++			dma_desc = &qh->desc_list[idx];
++			dwc_memset(dma_desc, 0x00, sizeof(dwc_otg_host_dma_desc_t));
++
++			frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index_last];
++
++			if (frame_desc->length > max_xfer_size)
++				qh->n_bytes[idx] = max_xfer_size;
++			else
++				qh->n_bytes[idx] = frame_desc->length;
++			dma_desc->status.b_isoc.n_bytes = qh->n_bytes[idx];
++			dma_desc->status.b_isoc.a = 1;
++			dma_desc->status.b_isoc.sts = 0;
++
++			dma_desc->buf = qtd->urb->dma + frame_desc->offset;
++
++			qh->ntd++;
++
++			qtd->isoc_frame_index_last++;
++
++#ifdef	ISOC_URB_GIVEBACK_ASAP
++			/*
++			 * Set IOC for each descriptor corresponding to the
++			 * last frame of the URB.
++			 */
++			if (qtd->isoc_frame_index_last ==
++			    qtd->urb->packet_count)
++				dma_desc->status.b_isoc.ioc = 1;
++
++#endif
++			idx = desclist_idx_inc(idx, inc, qh->dev_speed);
++			n_desc++;
++
++		}
++		qtd->in_process = 1;
++	}
++
++	qh->td_last = idx;
++
++#ifdef	ISOC_URB_GIVEBACK_ASAP
++	/* Set IOC for the last descriptor if descriptor list is full */
++	if (qh->ntd == ntd_max) {
++		idx = desclist_idx_dec(qh->td_last, inc, qh->dev_speed);
++		qh->desc_list[idx].status.b_isoc.ioc = 1;
++	}
++#else
++	/*
++	 * Set IOC bit only for one descriptor.
++	 * Always try to be ahead of HW processing,
++	 * i.e. on IOC generation driver activates next descriptors but
++	 * core continues to process descriptors followed the one with IOC set.
++	 */
++
++	if (n_desc > DESCNUM_THRESHOLD) {
++		/*
++		 * Move IOC "up". Required even if there is only one QTD
++		 * in the list, cause QTDs migth continue to be queued,
++		 * but during the activation it was only one queued.
++		 * Actually more than one QTD might be in the list if this function called
++		 * from XferCompletion - QTDs was queued during HW processing of the previous
++		 * descriptor chunk.
++		 */
++		idx = dwc_desclist_idx_dec(idx, inc * ((qh->ntd + 1) / 2), qh->dev_speed);
++	} else {
++		/*
++		 * Set the IOC for the latest descriptor
++		 * if either number of descriptor is not greather than threshold
++		 * or no more new descriptors activated.
++		 */
++		idx = dwc_desclist_idx_dec(qh->td_last, inc, qh->dev_speed);
++	}
++
++	qh->desc_list[idx].status.b_isoc.ioc = 1;
++#endif
++}
++
++static void init_non_isoc_dma_desc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++
++	dwc_hc_t *hc;
++	dwc_otg_host_dma_desc_t *dma_desc;
++	dwc_otg_qtd_t *qtd;
++	int num_packets, len, n_desc = 0;
++
++	hc = qh->channel;
++
++	/*
++	 * Start with hc->xfer_buff initialized in
++	 * assign_and_init_hc(), then if SG transfer consists of multiple URBs,
++	 * this pointer re-assigned to the buffer of the currently processed QTD.
++	 * For non-SG request there is always one QTD active.
++	 */
++
++	DWC_CIRCLEQ_FOREACH(qtd, &qh->qtd_list, qtd_list_entry) {
++
++		if (n_desc) {
++			/* SG request - more than 1 QTDs */
++			hc->xfer_buff = (uint8_t *)qtd->urb->dma + qtd->urb->actual_length;
++			hc->xfer_len = qtd->urb->length - qtd->urb->actual_length;
++		}
++
++		qtd->n_desc = 0;
++
++		do {
++			dma_desc = &qh->desc_list[n_desc];
++			len = hc->xfer_len;
++
++			if (len > MAX_DMA_DESC_SIZE)
++				len = MAX_DMA_DESC_SIZE - hc->max_packet + 1;
++
++			if (hc->ep_is_in) {
++				if (len > 0) {
++					num_packets = (len + hc->max_packet - 1) / hc->max_packet;
++				} else {
++					/* Need 1 packet for transfer length of 0. */
++					num_packets = 1;
++				}
++				/* Always program an integral # of max packets for IN transfers. */
++				len = num_packets * hc->max_packet;
++			}
++
++			dma_desc->status.b.n_bytes = len;
++
++			qh->n_bytes[n_desc] = len;
++
++			if ((qh->ep_type == UE_CONTROL)
++			    && (qtd->control_phase == DWC_OTG_CONTROL_SETUP))
++				dma_desc->status.b.sup = 1;	/* Setup Packet */
++
++			dma_desc->status.b.a = 1;	/* Active descriptor */
++			dma_desc->status.b.sts = 0;
++
++			dma_desc->buf =
++			    ((unsigned long)hc->xfer_buff & 0xffffffff);
++
++			/*
++			 * Last descriptor(or single) of IN transfer
++			 * with actual size less than MaxPacket.
++			 */
++			if (len > hc->xfer_len) {
++				hc->xfer_len = 0;
++			} else {
++				hc->xfer_buff += len;
++				hc->xfer_len -= len;
++			}
++
++			qtd->n_desc++;
++			n_desc++;
++		}
++		while ((hc->xfer_len > 0) && (n_desc != MAX_DMA_DESC_NUM_GENERIC));
++
++
++		qtd->in_process = 1;
++
++		if (qh->ep_type == UE_CONTROL)
++			break;
++
++		if (n_desc == MAX_DMA_DESC_NUM_GENERIC)
++			break;
++	}
++
++	if (n_desc) {
++		/* Request Transfer Complete interrupt for the last descriptor */
++		qh->desc_list[n_desc - 1].status.b.ioc = 1;
++		/* End of List indicator */
++		qh->desc_list[n_desc - 1].status.b.eol = 1;
++
++		hc->ntd = n_desc;
++	}
++}
++
++/**
++ * For Control and Bulk endpoints initializes descriptor list
++ * and starts the transfer.
++ *
++ * For Interrupt and Isochronous endpoints initializes descriptor list
++ * then updates FrameList, marking appropriate entries as active.
++ * In case of Isochronous, the starting descriptor index is calculated based
++ * on the scheduled frame, but only on the first transfer descriptor within a session.
++ * Then starts the transfer via enabling the channel.
++ * For Isochronous endpoint the channel is not halted on XferComplete
++ * interrupt so remains assigned to the endpoint(QH) until session is done.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh The QH to init.
++ *
++ * @return 0 if successful, negative error code otherwise.
++ */
++void dwc_otg_hcd_start_xfer_ddma(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	/* Channel is already assigned */
++	dwc_hc_t *hc = qh->channel;
++	uint8_t skip_frames = 0;
++
++	switch (hc->ep_type) {
++	case DWC_OTG_EP_TYPE_CONTROL:
++	case DWC_OTG_EP_TYPE_BULK:
++		init_non_isoc_dma_desc(hcd, qh);
++
++		dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
++		break;
++	case DWC_OTG_EP_TYPE_INTR:
++		init_non_isoc_dma_desc(hcd, qh);
++
++		update_frame_list(hcd, qh, 1);
++
++		dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
++		break;
++	case DWC_OTG_EP_TYPE_ISOC:
++
++		if (!qh->ntd)
++			skip_frames = recalc_initial_desc_idx(hcd, qh);
++
++		init_isoc_dma_desc(hcd, qh, skip_frames);
++
++		if (!hc->xfer_started) {
++
++			update_frame_list(hcd, qh, 1);
++
++			/*
++			 * Always set to max, instead of actual size.
++			 * Otherwise ntd will be changed with
++			 * channel being enabled. Not recommended.
++			 *
++			 */
++			hc->ntd = max_desc_num(qh);
++			/* Enable channel only once for ISOC */
++			dwc_otg_hc_start_transfer_ddma(hcd->core_if, hc);
++		}
++
++		break;
++	default:
++
++		break;
++	}
++}
++
++static void complete_isoc_xfer_ddma(dwc_otg_hcd_t * hcd,
++				    dwc_hc_t * hc,
++				    dwc_otg_hc_regs_t * hc_regs,
++				    dwc_otg_halt_status_e halt_status)
++{
++	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
++	dwc_otg_qtd_t *qtd, *qtd_tmp;
++	dwc_otg_qh_t *qh;
++	dwc_otg_host_dma_desc_t *dma_desc;
++	uint16_t idx, remain;
++	uint8_t urb_compl;
++
++	qh = hc->qh;
++	idx = qh->td_first;
++
++	if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
++		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry)
++		    qtd->in_process = 0;
++		return;
++	} else if ((halt_status == DWC_OTG_HC_XFER_AHB_ERR) ||
++		   (halt_status == DWC_OTG_HC_XFER_BABBLE_ERR)) {
++		/*
++		 * Channel is halted in these error cases.
++		 * Considered as serious issues.
++		 * Complete all URBs marking all frames as failed,
++		 * irrespective whether some of the descriptors(frames) succeeded or no.
++		 * Pass error code to completion routine as well, to
++		 * update urb->status, some of class drivers might use it to stop
++		 * queing transfer requests.
++		 */
++		int err = (halt_status == DWC_OTG_HC_XFER_AHB_ERR)
++		    ? (-DWC_E_IO)
++		    : (-DWC_E_OVERFLOW);
++
++		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
++			for (idx = 0; idx < qtd->urb->packet_count; idx++) {
++				frame_desc = &qtd->urb->iso_descs[idx];
++				frame_desc->status = err;
++			}
++			hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, err);
++			dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
++		}
++		return;
++	}
++
++	DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
++
++		if (!qtd->in_process)
++			break;
++
++		urb_compl = 0;
++
++		do {
++
++			dma_desc = &qh->desc_list[idx];
++
++			frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
++			remain = hc->ep_is_in ? dma_desc->status.b_isoc.n_bytes : 0;
++
++			if (dma_desc->status.b_isoc.sts == DMA_DESC_STS_PKTERR) {
++				/*
++				 * XactError or, unable to complete all the transactions
++				 * in the scheduled micro-frame/frame,
++				 * both indicated by DMA_DESC_STS_PKTERR.
++				 */
++				qtd->urb->error_count++;
++				frame_desc->actual_length = qh->n_bytes[idx] - remain;
++				frame_desc->status = -DWC_E_PROTOCOL;
++			} else {
++				/* Success */
++
++				frame_desc->actual_length = qh->n_bytes[idx] - remain;
++				frame_desc->status = 0;
++			}
++
++			if (++qtd->isoc_frame_index == qtd->urb->packet_count) {
++				/*
++				 * urb->status is not used for isoc transfers here.
++				 * The individual frame_desc status are used instead.
++				 */
++
++				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++				dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
++
++				/*
++				 * This check is necessary because urb_dequeue can be called
++				 * from urb complete callback(sound driver example).
++				 * All pending URBs are dequeued there, so no need for
++				 * further processing.
++				 */
++				if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
++					return;
++				}
++
++				urb_compl = 1;
++
++			}
++
++			qh->ntd--;
++
++			/* Stop if IOC requested descriptor reached */
++			if (dma_desc->status.b_isoc.ioc) {
++				idx = desclist_idx_inc(idx, qh->interval, hc->speed);
++				goto stop_scan;
++			}
++
++			idx = desclist_idx_inc(idx, qh->interval, hc->speed);
++
++			if (urb_compl)
++				break;
++		}
++		while (idx != qh->td_first);
++	}
++stop_scan:
++	qh->td_first = idx;
++}
++
++uint8_t update_non_isoc_urb_state_ddma(dwc_otg_hcd_t * hcd,
++				       dwc_hc_t * hc,
++				       dwc_otg_qtd_t * qtd,
++				       dwc_otg_host_dma_desc_t * dma_desc,
++				       dwc_otg_halt_status_e halt_status,
++				       uint32_t n_bytes, uint8_t * xfer_done)
++{
++
++	uint16_t remain = hc->ep_is_in ? dma_desc->status.b.n_bytes : 0;
++	dwc_otg_hcd_urb_t *urb = qtd->urb;
++
++	if (halt_status == DWC_OTG_HC_XFER_AHB_ERR) {
++		urb->status = -DWC_E_IO;
++		return 1;
++	}
++	if (dma_desc->status.b.sts == DMA_DESC_STS_PKTERR) {
++		switch (halt_status) {
++		case DWC_OTG_HC_XFER_STALL:
++			urb->status = -DWC_E_PIPE;
++			break;
++		case DWC_OTG_HC_XFER_BABBLE_ERR:
++			urb->status = -DWC_E_OVERFLOW;
++			break;
++		case DWC_OTG_HC_XFER_XACT_ERR:
++			urb->status = -DWC_E_PROTOCOL;
++			break;
++		default:
++			DWC_ERROR("%s: Unhandled descriptor error status (%d)\n", __func__,
++				  halt_status);
++			break;
++		}
++		return 1;
++	}
++
++	if (dma_desc->status.b.a == 1) {
++		DWC_DEBUGPL(DBG_HCDV,
++			    "Active descriptor encountered on channel %d\n",
++			    hc->hc_num);
++		return 0;
++	}
++
++	if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL) {
++		if (qtd->control_phase == DWC_OTG_CONTROL_DATA) {
++			urb->actual_length += n_bytes - remain;
++			if (remain || urb->actual_length == urb->length) {
++				/*
++				 * For Control Data stage do not set urb->status=0 to prevent
++				 * URB callback. Set it when Status phase done. See below.
++				 */
++				*xfer_done = 1;
++			}
++
++		} else if (qtd->control_phase == DWC_OTG_CONTROL_STATUS) {
++			urb->status = 0;
++			*xfer_done = 1;
++		}
++		/* No handling for SETUP stage */
++	} else {
++		/* BULK and INTR */
++		urb->actual_length += n_bytes - remain;
++		if (remain || urb->actual_length == urb->length) {
++			urb->status = 0;
++			*xfer_done = 1;
++		}
++	}
++
++	return 0;
++}
++
++static void complete_non_isoc_xfer_ddma(dwc_otg_hcd_t * hcd,
++					dwc_hc_t * hc,
++					dwc_otg_hc_regs_t * hc_regs,
++					dwc_otg_halt_status_e halt_status)
++{
++	dwc_otg_hcd_urb_t *urb = NULL;
++	dwc_otg_qtd_t *qtd, *qtd_tmp;
++	dwc_otg_qh_t *qh;
++	dwc_otg_host_dma_desc_t *dma_desc;
++	uint32_t n_bytes, n_desc, i;
++	uint8_t failed = 0, xfer_done;
++
++	n_desc = 0;
++
++	qh = hc->qh;
++
++	if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
++		DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &hc->qh->qtd_list, qtd_list_entry) {
++			qtd->in_process = 0;
++		}
++		return;
++	}
++
++	DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {
++
++		urb = qtd->urb;
++
++		n_bytes = 0;
++		xfer_done = 0;
++
++		for (i = 0; i < qtd->n_desc; i++) {
++			dma_desc = &qh->desc_list[n_desc];
++
++			n_bytes = qh->n_bytes[n_desc];
++
++			failed =
++			    update_non_isoc_urb_state_ddma(hcd, hc, qtd,
++							   dma_desc,
++							   halt_status, n_bytes,
++							   &xfer_done);
++
++			if (failed
++			    || (xfer_done
++				&& (urb->status != -DWC_E_IN_PROGRESS))) {
++
++				hcd->fops->complete(hcd, urb->priv, urb,
++						    urb->status);
++				dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
++
++				if (failed)
++					goto stop_scan;
++			} else if (qh->ep_type == UE_CONTROL) {
++				if (qtd->control_phase == DWC_OTG_CONTROL_SETUP) {
++					if (urb->length > 0) {
++						qtd->control_phase = DWC_OTG_CONTROL_DATA;
++					} else {
++						qtd->control_phase = DWC_OTG_CONTROL_STATUS;
++					}
++					DWC_DEBUGPL(DBG_HCDV, "  Control setup transaction done\n");
++				} else if (qtd->control_phase == DWC_OTG_CONTROL_DATA) {
++					if (xfer_done) {
++						qtd->control_phase = DWC_OTG_CONTROL_STATUS;
++						DWC_DEBUGPL(DBG_HCDV, "  Control data transfer done\n");
++					} else if (i + 1 == qtd->n_desc) {
++						/*
++						 * Last descriptor for Control data stage which is
++						 * not completed yet.
++						 */
++						dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++					}
++				}
++			}
++
++			n_desc++;
++		}
++
++	}
++
++stop_scan:
++
++	if (qh->ep_type != UE_CONTROL) {
++		/*
++		 * Resetting the data toggle for bulk
++		 * and interrupt endpoints in case of stall. See handle_hc_stall_intr()
++		 */
++		if (halt_status == DWC_OTG_HC_XFER_STALL)
++			qh->data_toggle = DWC_OTG_HC_PID_DATA0;
++		else
++			dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++	}
++
++	if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
++		hcint_data_t hcint;
++		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++		if (hcint.b.nyet) {
++			/*
++			 * Got a NYET on the last transaction of the transfer. It
++			 * means that the endpoint should be in the PING state at the
++			 * beginning of the next transfer.
++			 */
++			qh->ping_state = 1;
++			clear_hc_int(hc_regs, nyet);
++		}
++
++	}
++
++}
++
++/**
++ * This function is called from interrupt handlers.
++ * Scans the descriptor list, updates URB's status and
++ * calls completion routine for the URB if it's done.
++ * Releases the channel to be used by other transfers.
++ * In case of Isochronous endpoint the channel is not halted until
++ * the end of the session, i.e. QTD list is empty.
++ * If periodic channel released the FrameList is updated accordingly.
++ *
++ * Calls transaction selection routines to activate pending transfers.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param hc Host channel, the transfer is completed on.
++ * @param hc_regs Host channel registers.
++ * @param halt_status Reason the channel is being halted,
++ *		      or just XferComplete for isochronous transfer
++ */
++void dwc_otg_hcd_complete_xfer_ddma(dwc_otg_hcd_t * hcd,
++				    dwc_hc_t * hc,
++				    dwc_otg_hc_regs_t * hc_regs,
++				    dwc_otg_halt_status_e halt_status)
++{
++	uint8_t continue_isoc_xfer = 0;
++	dwc_otg_transaction_type_e tr_type;
++	dwc_otg_qh_t *qh = hc->qh;
++
++	if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++
++		complete_isoc_xfer_ddma(hcd, hc, hc_regs, halt_status);
++
++		/* Release the channel if halted or session completed */
++		if (halt_status != DWC_OTG_HC_XFER_COMPLETE ||
++		    DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
++
++			/* Halt the channel if session completed */
++			if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
++				dwc_otg_hc_halt(hcd->core_if, hc, halt_status);
++			}
++
++			release_channel_ddma(hcd, qh);
++			dwc_otg_hcd_qh_remove(hcd, qh);
++		} else {
++			/* Keep in assigned schedule to continue transfer */
++			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
++					   &qh->qh_list_entry);
++			continue_isoc_xfer = 1;
++
++		}
++		/** @todo Consider the case when period exceeds FrameList size.
++		 *  Frame Rollover interrupt should be used.
++		 */
++	} else {
++		/* Scan descriptor list to complete the URB(s), then release the channel */
++		complete_non_isoc_xfer_ddma(hcd, hc, hc_regs, halt_status);
++
++		release_channel_ddma(hcd, qh);
++		dwc_otg_hcd_qh_remove(hcd, qh);
++
++		if (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
++			/* Add back to inactive non-periodic schedule on normal completion */
++			dwc_otg_hcd_qh_add(hcd, qh);
++		}
++
++	}
++	tr_type = dwc_otg_hcd_select_transactions(hcd);
++	if (tr_type != DWC_OTG_TRANSACTION_NONE || continue_isoc_xfer) {
++		if (continue_isoc_xfer) {
++			if (tr_type == DWC_OTG_TRANSACTION_NONE) {
++				tr_type = DWC_OTG_TRANSACTION_PERIODIC;
++			} else if (tr_type == DWC_OTG_TRANSACTION_NON_PERIODIC) {
++				tr_type = DWC_OTG_TRANSACTION_ALL;
++			}
++		}
++		dwc_otg_hcd_queue_transactions(hcd, tr_type);
++	}
++}
++
++#endif /* DWC_DEVICE_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_if.h
+@@ -0,0 +1,421 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_if.h $
++ * $Revision: #12 $
++ * $Date: 2011/10/26 $
++ * $Change: 1873028 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_DEVICE_ONLY
++#ifndef __DWC_HCD_IF_H__
++#define __DWC_HCD_IF_H__
++
++#include "dwc_otg_core_if.h"
++
++/** @file
++ * This file defines DWC_OTG HCD Core API.
++ */
++
++struct dwc_otg_hcd;
++typedef struct dwc_otg_hcd dwc_otg_hcd_t;
++
++struct dwc_otg_hcd_urb;
++typedef struct dwc_otg_hcd_urb dwc_otg_hcd_urb_t;
++
++/** @name HCD Function Driver Callbacks */
++/** @{ */
++
++/** This function is called whenever core switches to host mode. */
++typedef int (*dwc_otg_hcd_start_cb_t) (dwc_otg_hcd_t * hcd);
++
++/** This function is called when device has been disconnected */
++typedef int (*dwc_otg_hcd_disconnect_cb_t) (dwc_otg_hcd_t * hcd);
++
++/** Wrapper provides this function to HCD to core, so it can get hub information to which device is connected */
++typedef int (*dwc_otg_hcd_hub_info_from_urb_cb_t) (dwc_otg_hcd_t * hcd,
++						   void *urb_handle,
++						   uint32_t * hub_addr,
++						   uint32_t * port_addr);
++/** Via this function HCD core gets device speed */
++typedef int (*dwc_otg_hcd_speed_from_urb_cb_t) (dwc_otg_hcd_t * hcd,
++						void *urb_handle);
++
++/** This function is called when urb is completed */
++typedef int (*dwc_otg_hcd_complete_urb_cb_t) (dwc_otg_hcd_t * hcd,
++					      void *urb_handle,
++					      dwc_otg_hcd_urb_t * dwc_otg_urb,
++					      int32_t status);
++
++/** Via this function HCD core gets b_hnp_enable parameter */
++typedef int (*dwc_otg_hcd_get_b_hnp_enable) (dwc_otg_hcd_t * hcd);
++
++struct dwc_otg_hcd_function_ops {
++	dwc_otg_hcd_start_cb_t start;
++	dwc_otg_hcd_disconnect_cb_t disconnect;
++	dwc_otg_hcd_hub_info_from_urb_cb_t hub_info;
++	dwc_otg_hcd_speed_from_urb_cb_t speed;
++	dwc_otg_hcd_complete_urb_cb_t complete;
++	dwc_otg_hcd_get_b_hnp_enable get_b_hnp_enable;
++};
++/** @} */
++
++/** @name HCD Core API */
++/** @{ */
++/** This function allocates dwc_otg_hcd structure and returns pointer on it. */
++extern dwc_otg_hcd_t *dwc_otg_hcd_alloc_hcd(void);
++
++/** This function should be called to initiate HCD Core.
++ *
++ * @param hcd The HCD
++ * @param core_if The DWC_OTG Core
++ *
++ * Returns -DWC_E_NO_MEMORY if no enough memory.
++ * Returns 0 on success
++ */
++extern int dwc_otg_hcd_init(dwc_otg_hcd_t * hcd, dwc_otg_core_if_t * core_if);
++
++/** Frees HCD
++ *
++ * @param hcd The HCD
++ */
++extern void dwc_otg_hcd_remove(dwc_otg_hcd_t * hcd);
++
++/** This function should be called on every hardware interrupt.
++ *
++ * @param dwc_otg_hcd The HCD
++ *
++ * Returns non zero if interrupt is handled
++ * Return 0 if interrupt is not handled
++ */
++extern int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd);
++
++/** This function is used to handle the fast interrupt
++ *
++ */
++#ifdef CONFIG_ARM64
++extern void dwc_otg_hcd_handle_fiq(void);
++#else
++extern void __attribute__ ((naked)) dwc_otg_hcd_handle_fiq(void);
++#endif
++
++/**
++ * Returns private data set by
++ * dwc_otg_hcd_set_priv_data function.
++ *
++ * @param hcd The HCD
++ */
++extern void *dwc_otg_hcd_get_priv_data(dwc_otg_hcd_t * hcd);
++
++/**
++ * Set private data.
++ *
++ * @param hcd The HCD
++ * @param priv_data pointer to be stored in private data
++ */
++extern void dwc_otg_hcd_set_priv_data(dwc_otg_hcd_t * hcd, void *priv_data);
++
++/**
++ * This function initializes the HCD Core.
++ *
++ * @param hcd The HCD
++ * @param fops The Function Driver Operations data structure containing pointers to all callbacks.
++ *
++ * Returns -DWC_E_NO_DEVICE if Core is currently is in device mode.
++ * Returns 0 on success
++ */
++extern int dwc_otg_hcd_start(dwc_otg_hcd_t * hcd,
++			     struct dwc_otg_hcd_function_ops *fops);
++
++/**
++ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
++ * stopped.
++ *
++ * @param hcd The HCD
++ */
++extern void dwc_otg_hcd_stop(dwc_otg_hcd_t * hcd);
++
++/**
++ * Handles hub class-specific requests.
++ *
++ * @param dwc_otg_hcd The HCD
++ * @param typeReq Request Type
++ * @param wValue wValue from control request
++ * @param wIndex wIndex from control request
++ * @param buf data buffer
++ * @param wLength data buffer length
++ *
++ * Returns -DWC_E_INVALID if invalid argument is passed
++ * Returns 0 on success
++ */
++extern int dwc_otg_hcd_hub_control(dwc_otg_hcd_t * dwc_otg_hcd,
++				   uint16_t typeReq, uint16_t wValue,
++				   uint16_t wIndex, uint8_t * buf,
++				   uint16_t wLength);
++
++/**
++ * Returns otg port number.
++ *
++ * @param hcd The HCD
++ */
++extern uint32_t dwc_otg_hcd_otg_port(dwc_otg_hcd_t * hcd);
++
++/**
++ * Returns OTG version - either 1.3 or 2.0.
++ *
++ * @param core_if The core_if structure pointer
++ */
++extern uint16_t dwc_otg_get_otg_version(dwc_otg_core_if_t * core_if);
++
++/**
++ * Returns 1 if currently core is acting as B host, and 0 otherwise.
++ *
++ * @param hcd The HCD
++ */
++extern uint32_t dwc_otg_hcd_is_b_host(dwc_otg_hcd_t * hcd);
++
++/**
++ * Returns current frame number.
++ *
++ * @param hcd The HCD
++ */
++extern int dwc_otg_hcd_get_frame_number(dwc_otg_hcd_t * hcd);
++
++/**
++ * Dumps hcd state.
++ *
++ * @param hcd The HCD
++ */
++extern void dwc_otg_hcd_dump_state(dwc_otg_hcd_t * hcd);
++
++/**
++ * Dump the average frame remaining at SOF. This can be used to
++ * determine average interrupt latency. Frame remaining is also shown for
++ * start transfer and two additional sample points.
++ * Currently this function is not implemented.
++ *
++ * @param hcd The HCD
++ */
++extern void dwc_otg_hcd_dump_frrem(dwc_otg_hcd_t * hcd);
++
++/**
++ * Sends LPM transaction to the local device.
++ *
++ * @param hcd The HCD
++ * @param devaddr Device Address
++ * @param hird Host initiated resume duration
++ * @param bRemoteWake Value of bRemoteWake field in LPM transaction
++ *
++ * Returns negative value if sending LPM transaction was not succeeded.
++ * Returns 0 on success.
++ */
++extern int dwc_otg_hcd_send_lpm(dwc_otg_hcd_t * hcd, uint8_t devaddr,
++				uint8_t hird, uint8_t bRemoteWake);
++
++/* URB interface */
++
++/**
++ * Allocates memory for dwc_otg_hcd_urb structure.
++ * Allocated memory should be freed by call of DWC_FREE.
++ *
++ * @param hcd The HCD
++ * @param iso_desc_count Count of ISOC descriptors
++ * @param atomic_alloc Specefies whether to perform atomic allocation.
++ */
++extern dwc_otg_hcd_urb_t *dwc_otg_hcd_urb_alloc(dwc_otg_hcd_t * hcd,
++						int iso_desc_count,
++						int atomic_alloc);
++
++/**
++ * Set pipe information in URB.
++ *
++ * @param hcd_urb DWC_OTG URB
++ * @param devaddr Device Address
++ * @param ep_num Endpoint Number
++ * @param ep_type Endpoint Type
++ * @param ep_dir Endpoint Direction
++ * @param mps Max Packet Size
++ */
++extern void dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_hcd_urb_t * hcd_urb,
++					 uint8_t devaddr, uint8_t ep_num,
++					 uint8_t ep_type, uint8_t ep_dir,
++					 uint16_t mps);
++
++/* Transfer flags */
++#define URB_GIVEBACK_ASAP 0x1
++#define URB_SEND_ZERO_PACKET 0x2
++
++/**
++ * Sets dwc_otg_hcd_urb parameters.
++ *
++ * @param urb DWC_OTG URB allocated by dwc_otg_hcd_urb_alloc function.
++ * @param urb_handle Unique handle for request, this will be passed back
++ * to function driver in completion callback.
++ * @param buf The buffer for the data
++ * @param dma The DMA buffer for the data
++ * @param buflen Transfer length
++ * @param sp Buffer for setup data
++ * @param sp_dma DMA address of setup data buffer
++ * @param flags Transfer flags
++ * @param interval Polling interval for interrupt or isochronous transfers.
++ */
++extern void dwc_otg_hcd_urb_set_params(dwc_otg_hcd_urb_t * urb,
++				       void *urb_handle, void *buf,
++				       dwc_dma_t dma, uint32_t buflen, void *sp,
++				       dwc_dma_t sp_dma, uint32_t flags,
++				       uint16_t interval);
++
++/** Gets status from dwc_otg_hcd_urb
++ *
++ * @param dwc_otg_urb DWC_OTG URB
++ */
++extern uint32_t dwc_otg_hcd_urb_get_status(dwc_otg_hcd_urb_t * dwc_otg_urb);
++
++/** Gets actual length from dwc_otg_hcd_urb
++ *
++ * @param dwc_otg_urb DWC_OTG URB
++ */
++extern uint32_t dwc_otg_hcd_urb_get_actual_length(dwc_otg_hcd_urb_t *
++						  dwc_otg_urb);
++
++/** Gets error count from dwc_otg_hcd_urb. Only for ISOC URBs
++ *
++ * @param dwc_otg_urb DWC_OTG URB
++ */
++extern uint32_t dwc_otg_hcd_urb_get_error_count(dwc_otg_hcd_urb_t *
++						dwc_otg_urb);
++
++/** Set ISOC descriptor offset and length
++ *
++ * @param dwc_otg_urb DWC_OTG URB
++ * @param desc_num ISOC descriptor number
++ * @param offset Offset from beginig of buffer.
++ * @param length Transaction length
++ */
++extern void dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_hcd_urb_t * dwc_otg_urb,
++						int desc_num, uint32_t offset,
++						uint32_t length);
++
++/** Get status of ISOC descriptor, specified by desc_num
++ *
++ * @param dwc_otg_urb DWC_OTG URB
++ * @param desc_num ISOC descriptor number
++ */
++extern uint32_t dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_hcd_urb_t *
++						    dwc_otg_urb, int desc_num);
++
++/** Get actual length of ISOC descriptor, specified by desc_num
++ *
++ * @param dwc_otg_urb DWC_OTG URB
++ * @param desc_num ISOC descriptor number
++ */
++extern uint32_t dwc_otg_hcd_urb_get_iso_desc_actual_length(dwc_otg_hcd_urb_t *
++							   dwc_otg_urb,
++							   int desc_num);
++
++/** Queue URB. After transfer is completes, the complete callback will be called with the URB status
++ *
++ * @param dwc_otg_hcd The HCD
++ * @param dwc_otg_urb DWC_OTG URB
++ * @param ep_handle Out parameter for returning endpoint handle
++ * @param atomic_alloc Flag to do atomic allocation if needed
++ *
++ * Returns -DWC_E_NO_DEVICE if no device is connected.
++ * Returns -DWC_E_NO_MEMORY if there is no enough memory.
++ * Returns 0 on success.
++ */
++extern int dwc_otg_hcd_urb_enqueue(dwc_otg_hcd_t * dwc_otg_hcd,
++				   dwc_otg_hcd_urb_t * dwc_otg_urb,
++				   void **ep_handle, int atomic_alloc);
++
++/** De-queue the specified URB
++ *
++ * @param dwc_otg_hcd The HCD
++ * @param dwc_otg_urb DWC_OTG URB
++ */
++extern int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * dwc_otg_hcd,
++				   dwc_otg_hcd_urb_t * dwc_otg_urb);
++
++/** Frees resources in the DWC_otg controller related to a given endpoint.
++ * Any URBs for the endpoint must already be dequeued.
++ *
++ * @param hcd The HCD
++ * @param ep_handle Endpoint handle, returned by dwc_otg_hcd_urb_enqueue function
++ * @param retry Number of retries if there are queued transfers.
++ *
++ * Returns -DWC_E_INVALID if invalid arguments are passed.
++ * Returns 0 on success
++ */
++extern int dwc_otg_hcd_endpoint_disable(dwc_otg_hcd_t * hcd, void *ep_handle,
++					int retry);
++
++/* Resets the data toggle in qh structure. This function can be called from
++ * usb_clear_halt routine.
++ *
++ * @param hcd The HCD
++ * @param ep_handle Endpoint handle, returned by dwc_otg_hcd_urb_enqueue function
++ *
++ * Returns -DWC_E_INVALID if invalid arguments are passed.
++ * Returns 0 on success
++ */
++extern int dwc_otg_hcd_endpoint_reset(dwc_otg_hcd_t * hcd, void *ep_handle);
++
++/** Returns 1 if status of specified port is changed and 0 otherwise.
++ *
++ * @param hcd The HCD
++ * @param port Port number
++ */
++extern int dwc_otg_hcd_is_status_changed(dwc_otg_hcd_t * hcd, int port);
++
++/** Call this function to check if bandwidth was allocated for specified endpoint.
++ * Only for ISOC and INTERRUPT endpoints.
++ *
++ * @param hcd The HCD
++ * @param ep_handle Endpoint handle
++ */
++extern int dwc_otg_hcd_is_bandwidth_allocated(dwc_otg_hcd_t * hcd,
++					      void *ep_handle);
++
++/** Call this function to check if bandwidth was freed for specified endpoint.
++ *
++ * @param hcd The HCD
++ * @param ep_handle Endpoint handle
++ */
++extern int dwc_otg_hcd_is_bandwidth_freed(dwc_otg_hcd_t * hcd, void *ep_handle);
++
++/** Returns bandwidth allocated for specified endpoint in microseconds.
++ * Only for ISOC and INTERRUPT endpoints.
++ *
++ * @param hcd The HCD
++ * @param ep_handle Endpoint handle
++ */
++extern uint8_t dwc_otg_hcd_get_ep_bandwidth(dwc_otg_hcd_t * hcd,
++					    void *ep_handle);
++
++/** @} */
++
++#endif /* __DWC_HCD_IF_H__ */
++#endif /* DWC_DEVICE_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
+@@ -0,0 +1,2757 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_intr.c $
++ * $Revision: #89 $
++ * $Date: 2011/10/20 $
++ * $Change: 1869487 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_DEVICE_ONLY
++
++#include "dwc_otg_hcd.h"
++#include "dwc_otg_regs.h"
++
++#include <linux/jiffies.h>
++#ifdef CONFIG_ARM
++#include <asm/fiq.h>
++#endif
++
++extern bool microframe_schedule;
++
++/** @file
++ * This file contains the implementation of the HCD Interrupt handlers.
++ */
++
++int fiq_done, int_done;
++
++#ifdef FIQ_DEBUG
++char buffer[1000*16];
++int wptr;
++void notrace _fiq_print(FIQDBG_T dbg_lvl, char *fmt, ...)
++{
++	FIQDBG_T dbg_lvl_req = FIQDBG_PORTHUB;
++	va_list args;
++	char text[17];
++	hfnum_data_t hfnum = { .d32 = FIQ_READ(dwc_regs_base + 0x408) };
++
++	if(dbg_lvl & dbg_lvl_req || dbg_lvl == FIQDBG_ERR)
++	{
++		local_fiq_disable();
++		snprintf(text, 9, "%4d%d:%d ", hfnum.b.frnum/8, hfnum.b.frnum%8, 8 - hfnum.b.frrem/937);
++		va_start(args, fmt);
++		vsnprintf(text+8, 9, fmt, args);
++		va_end(args);
++
++		memcpy(buffer + wptr, text, 16);
++		wptr = (wptr + 16) % sizeof(buffer);
++		local_fiq_enable();
++	}
++}
++#endif
++
++/** This function handles interrupts for the HCD. */
++int32_t dwc_otg_hcd_handle_intr(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	int retval = 0;
++	static int last_time;
++	dwc_otg_core_if_t *core_if = dwc_otg_hcd->core_if;
++	gintsts_data_t gintsts;
++	gintmsk_data_t gintmsk;
++	hfnum_data_t hfnum;
++	haintmsk_data_t haintmsk;
++
++#ifdef DEBUG
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++
++#endif
++
++	gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++	gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
++
++	/* Exit from ISR if core is hibernated */
++	if (core_if->hibernation_suspend == 1) {
++		goto exit_handler_routine;
++	}
++	DWC_SPINLOCK(dwc_otg_hcd->lock);
++	/* Check if HOST Mode */
++	if (dwc_otg_is_host_mode(core_if)) {
++		if (fiq_enable) {
++			local_fiq_disable();
++			fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
++			/* Pull in from the FIQ's disabled mask */
++			gintmsk.d32 = gintmsk.d32 | ~(dwc_otg_hcd->fiq_state->gintmsk_saved.d32);
++			dwc_otg_hcd->fiq_state->gintmsk_saved.d32 = ~0;
++		}
++
++		if (fiq_fsm_enable && ( 0x0000FFFF & ~(dwc_otg_hcd->fiq_state->haintmsk_saved.b2.chint))) {
++			gintsts.b.hcintr = 1;
++		}
++
++		/* Danger will robinson: fake a SOF if necessary */
++		if (fiq_fsm_enable && (dwc_otg_hcd->fiq_state->gintmsk_saved.b.sofintr == 1)) {
++			gintsts.b.sofintr = 1;
++		}
++		gintsts.d32 &= gintmsk.d32;
++
++		if (fiq_enable) {
++			fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
++			local_fiq_enable();
++		}
++
++		if (!gintsts.d32) {
++			goto exit_handler_routine;
++		}
++
++#ifdef DEBUG
++		// We should be OK doing this because the common interrupts should already have been serviced
++		/* Don't print debug message in the interrupt handler on SOF */
++#ifndef DEBUG_SOF
++		if (gintsts.d32 != DWC_SOF_INTR_MASK)
++#endif
++			DWC_DEBUGPL(DBG_HCDI, "\n");
++#endif
++
++#ifdef DEBUG
++#ifndef DEBUG_SOF
++		if (gintsts.d32 != DWC_SOF_INTR_MASK)
++#endif
++			DWC_DEBUGPL(DBG_HCDI,
++				    "DWC OTG HCD Interrupt Detected gintsts&gintmsk=0x%08x core_if=%p\n",
++				    gintsts.d32, core_if);
++#endif
++		hfnum.d32 = DWC_READ_REG32(&dwc_otg_hcd->core_if->host_if->host_global_regs->hfnum);
++		if (gintsts.b.sofintr) {
++			retval |= dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd);
++		}
++
++		if (gintsts.b.rxstsqlvl) {
++			retval |=
++			    dwc_otg_hcd_handle_rx_status_q_level_intr
++			    (dwc_otg_hcd);
++		}
++		if (gintsts.b.nptxfempty) {
++			retval |=
++			    dwc_otg_hcd_handle_np_tx_fifo_empty_intr
++			    (dwc_otg_hcd);
++		}
++		if (gintsts.b.i2cintr) {
++			/** @todo Implement i2cintr handler. */
++		}
++		if (gintsts.b.portintr) {
++
++			gintmsk_data_t gintmsk = { .b.portintr = 1};
++			retval |= dwc_otg_hcd_handle_port_intr(dwc_otg_hcd);
++			if (fiq_enable) {
++				local_fiq_disable();
++				fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
++				DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
++				fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
++				local_fiq_enable();
++			} else {
++				DWC_MODIFY_REG32(&dwc_otg_hcd->core_if->core_global_regs->gintmsk, 0, gintmsk.d32);
++			}
++		}
++		if (gintsts.b.hcintr) {
++			retval |= dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd);
++		}
++		if (gintsts.b.ptxfempty) {
++			retval |=
++			    dwc_otg_hcd_handle_perio_tx_fifo_empty_intr
++			    (dwc_otg_hcd);
++		}
++#ifdef DEBUG
++#ifndef DEBUG_SOF
++		if (gintsts.d32 != DWC_SOF_INTR_MASK)
++#endif
++		{
++			DWC_DEBUGPL(DBG_HCDI,
++				    "DWC OTG HCD Finished Servicing Interrupts\n");
++			DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintsts=0x%08x\n",
++				    DWC_READ_REG32(&global_regs->gintsts));
++			DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD gintmsk=0x%08x\n",
++				    DWC_READ_REG32(&global_regs->gintmsk));
++		}
++#endif
++
++#ifdef DEBUG
++#ifndef DEBUG_SOF
++		if (gintsts.d32 != DWC_SOF_INTR_MASK)
++#endif
++			DWC_DEBUGPL(DBG_HCDI, "\n");
++#endif
++
++	}
++
++exit_handler_routine:
++	if (fiq_enable)	{
++		gintmsk_data_t gintmsk_new;
++		haintmsk_data_t haintmsk_new;
++		local_fiq_disable();
++		fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
++		gintmsk_new.d32 = *(volatile uint32_t *)&dwc_otg_hcd->fiq_state->gintmsk_saved.d32;
++		if(fiq_fsm_enable)
++			haintmsk_new.d32 = *(volatile uint32_t *)&dwc_otg_hcd->fiq_state->haintmsk_saved.d32;
++		else
++			haintmsk_new.d32 = 0x0000FFFF;
++
++		/* The FIQ could have sneaked another interrupt in. If so, don't clear MPHI */
++		if ((gintmsk_new.d32 == ~0) && (haintmsk_new.d32 == 0x0000FFFF)) {
++			if (dwc_otg_hcd->fiq_state->mphi_regs.swirq_clr) {
++				DWC_WRITE_REG32(dwc_otg_hcd->fiq_state->mphi_regs.swirq_clr, 1);
++			} else {
++				DWC_WRITE_REG32(dwc_otg_hcd->fiq_state->mphi_regs.intstat, (1<<16));
++			}
++			if (dwc_otg_hcd->fiq_state->mphi_int_count >= 50) {
++				fiq_print(FIQDBG_INT, dwc_otg_hcd->fiq_state, "MPHI CLR");
++					DWC_WRITE_REG32(dwc_otg_hcd->fiq_state->mphi_regs.ctrl, ((1<<31) + (1<<16)));
++					while (!(DWC_READ_REG32(dwc_otg_hcd->fiq_state->mphi_regs.ctrl) & (1 << 17)))
++						;
++					DWC_WRITE_REG32(dwc_otg_hcd->fiq_state->mphi_regs.ctrl, (1<<31));
++					dwc_otg_hcd->fiq_state->mphi_int_count = 0;
++			}
++			int_done++;
++		}
++		haintmsk.d32 = DWC_READ_REG32(&core_if->host_if->host_global_regs->haintmsk);
++		/* Re-enable interrupts that the FIQ masked (first time round) */
++		FIQ_WRITE(dwc_otg_hcd->fiq_state->dwc_regs_base + GINTMSK, gintmsk.d32);
++		fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
++		local_fiq_enable();
++
++		if ((jiffies / HZ) > last_time) {
++			//dwc_otg_qh_t *qh;
++			//dwc_list_link_t *cur;
++			/* Once a second output the fiq and irq numbers, useful for debug */
++			last_time = jiffies / HZ;
++		//	 DWC_WARN("np_kick=%d AHC=%d sched_frame=%d cur_frame=%d int_done=%d fiq_done=%d",
++		//	dwc_otg_hcd->fiq_state->kick_np_queues, dwc_otg_hcd->available_host_channels,
++		//	dwc_otg_hcd->fiq_state->next_sched_frame, hfnum.b.frnum, int_done, dwc_otg_hcd->fiq_state->fiq_done);
++			 //printk(KERN_WARNING "Periodic queues:\n");
++		}
++	}
++
++	DWC_SPINUNLOCK(dwc_otg_hcd->lock);
++	return retval;
++}
++
++#ifdef DWC_TRACK_MISSED_SOFS
++
++#warning Compiling code to track missed SOFs
++#define FRAME_NUM_ARRAY_SIZE 1000
++/**
++ * This function is for debug only.
++ */
++static inline void track_missed_sofs(uint16_t curr_frame_number)
++{
++	static uint16_t frame_num_array[FRAME_NUM_ARRAY_SIZE];
++	static uint16_t last_frame_num_array[FRAME_NUM_ARRAY_SIZE];
++	static int frame_num_idx = 0;
++	static uint16_t last_frame_num = DWC_HFNUM_MAX_FRNUM;
++	static int dumped_frame_num_array = 0;
++
++	if (frame_num_idx < FRAME_NUM_ARRAY_SIZE) {
++		if (((last_frame_num + 1) & DWC_HFNUM_MAX_FRNUM) !=
++		    curr_frame_number) {
++			frame_num_array[frame_num_idx] = curr_frame_number;
++			last_frame_num_array[frame_num_idx++] = last_frame_num;
++		}
++	} else if (!dumped_frame_num_array) {
++		int i;
++		DWC_PRINTF("Frame     Last Frame\n");
++		DWC_PRINTF("-----     ----------\n");
++		for (i = 0; i < FRAME_NUM_ARRAY_SIZE; i++) {
++			DWC_PRINTF("0x%04x    0x%04x\n",
++				   frame_num_array[i], last_frame_num_array[i]);
++		}
++		dumped_frame_num_array = 1;
++	}
++	last_frame_num = curr_frame_number;
++}
++#endif
++
++/**
++ * Handles the start-of-frame interrupt in host mode. Non-periodic
++ * transactions may be queued to the DWC_otg controller for the current
++ * (micro)frame. Periodic transactions may be queued to the controller for the
++ * next (micro)frame.
++ */
++int32_t dwc_otg_hcd_handle_sof_intr(dwc_otg_hcd_t * hcd)
++{
++	hfnum_data_t hfnum;
++	gintsts_data_t gintsts = { .d32 = 0 };
++	dwc_list_link_t *qh_entry;
++	dwc_otg_qh_t *qh;
++	dwc_otg_transaction_type_e tr_type;
++	int did_something = 0;
++	int32_t next_sched_frame = -1;
++
++	hfnum.d32 =
++	    DWC_READ_REG32(&hcd->core_if->host_if->host_global_regs->hfnum);
++
++#ifdef DEBUG_SOF
++	DWC_DEBUGPL(DBG_HCD, "--Start of Frame Interrupt--\n");
++#endif
++	hcd->frame_number = hfnum.b.frnum;
++
++#ifdef DEBUG
++	hcd->frrem_accum += hfnum.b.frrem;
++	hcd->frrem_samples++;
++#endif
++
++#ifdef DWC_TRACK_MISSED_SOFS
++	track_missed_sofs(hcd->frame_number);
++#endif
++	/* Determine whether any periodic QHs should be executed. */
++	qh_entry = DWC_LIST_FIRST(&hcd->periodic_sched_inactive);
++	while (qh_entry != &hcd->periodic_sched_inactive) {
++		qh = DWC_LIST_ENTRY(qh_entry, dwc_otg_qh_t, qh_list_entry);
++		qh_entry = qh_entry->next;
++		if (dwc_frame_num_le(qh->sched_frame, hcd->frame_number)) {
++
++			/*
++			 * Move QH to the ready list to be executed next
++			 * (micro)frame.
++			 */
++			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_ready,
++					   &qh->qh_list_entry);
++
++			did_something = 1;
++		}
++		else
++		{
++			if(next_sched_frame < 0 || dwc_frame_num_le(qh->sched_frame, next_sched_frame))
++			{
++				next_sched_frame = qh->sched_frame;
++			}
++		}
++	}
++	if (fiq_enable)
++		hcd->fiq_state->next_sched_frame = next_sched_frame;
++
++	tr_type = dwc_otg_hcd_select_transactions(hcd);
++	if (tr_type != DWC_OTG_TRANSACTION_NONE) {
++		dwc_otg_hcd_queue_transactions(hcd, tr_type);
++		did_something = 1;
++	}
++
++	/* Clear interrupt - but do not trample on the FIQ sof */
++	if (!fiq_fsm_enable) {
++		gintsts.b.sofintr = 1;
++		DWC_WRITE_REG32(&hcd->core_if->core_global_regs->gintsts, gintsts.d32);
++	}
++	return 1;
++}
++
++/** Handles the Rx Status Queue Level Interrupt, which indicates that there is at
++ * least one packet in the Rx FIFO.  The packets are moved from the FIFO to
++ * memory if the DWC_otg controller is operating in Slave mode. */
++int32_t dwc_otg_hcd_handle_rx_status_q_level_intr(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	host_grxsts_data_t grxsts;
++	dwc_hc_t *hc = NULL;
++
++	DWC_DEBUGPL(DBG_HCD, "--RxStsQ Level Interrupt--\n");
++
++	grxsts.d32 =
++	    DWC_READ_REG32(&dwc_otg_hcd->core_if->core_global_regs->grxstsp);
++
++	hc = dwc_otg_hcd->hc_ptr_array[grxsts.b.chnum];
++	if (!hc) {
++		DWC_ERROR("Unable to get corresponding channel\n");
++		return 0;
++	}
++
++	/* Packet Status */
++	DWC_DEBUGPL(DBG_HCDV, "    Ch num = %d\n", grxsts.b.chnum);
++	DWC_DEBUGPL(DBG_HCDV, "    Count = %d\n", grxsts.b.bcnt);
++	DWC_DEBUGPL(DBG_HCDV, "    DPID = %d, hc.dpid = %d\n", grxsts.b.dpid,
++		    hc->data_pid_start);
++	DWC_DEBUGPL(DBG_HCDV, "    PStatus = %d\n", grxsts.b.pktsts);
++
++	switch (grxsts.b.pktsts) {
++	case DWC_GRXSTS_PKTSTS_IN:
++		/* Read the data into the host buffer. */
++		if (grxsts.b.bcnt > 0) {
++			dwc_otg_read_packet(dwc_otg_hcd->core_if,
++					    hc->xfer_buff, grxsts.b.bcnt);
++
++			/* Update the HC fields for the next packet received. */
++			hc->xfer_count += grxsts.b.bcnt;
++			hc->xfer_buff += grxsts.b.bcnt;
++		}
++
++	case DWC_GRXSTS_PKTSTS_IN_XFER_COMP:
++	case DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
++	case DWC_GRXSTS_PKTSTS_CH_HALTED:
++		/* Handled in interrupt, just ignore data */
++		break;
++	default:
++		DWC_ERROR("RX_STS_Q Interrupt: Unknown status %d\n",
++			  grxsts.b.pktsts);
++		break;
++	}
++
++	return 1;
++}
++
++/** This interrupt occurs when the non-periodic Tx FIFO is half-empty. More
++ * data packets may be written to the FIFO for OUT transfers. More requests
++ * may be written to the non-periodic request queue for IN transfers. This
++ * interrupt is enabled only in Slave mode. */
++int32_t dwc_otg_hcd_handle_np_tx_fifo_empty_intr(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	DWC_DEBUGPL(DBG_HCD, "--Non-Periodic TxFIFO Empty Interrupt--\n");
++	dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
++				       DWC_OTG_TRANSACTION_NON_PERIODIC);
++	return 1;
++}
++
++/** This interrupt occurs when the periodic Tx FIFO is half-empty. More data
++ * packets may be written to the FIFO for OUT transfers. More requests may be
++ * written to the periodic request queue for IN transfers. This interrupt is
++ * enabled only in Slave mode. */
++int32_t dwc_otg_hcd_handle_perio_tx_fifo_empty_intr(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	DWC_DEBUGPL(DBG_HCD, "--Periodic TxFIFO Empty Interrupt--\n");
++	dwc_otg_hcd_queue_transactions(dwc_otg_hcd,
++				       DWC_OTG_TRANSACTION_PERIODIC);
++	return 1;
++}
++
++/** There are multiple conditions that can cause a port interrupt. This function
++ * determines which interrupt conditions have occurred and handles them
++ * appropriately. */
++int32_t dwc_otg_hcd_handle_port_intr(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	int retval = 0;
++	hprt0_data_t hprt0;
++	hprt0_data_t hprt0_modify;
++
++	hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
++	hprt0_modify.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
++
++	/* Clear appropriate bits in HPRT0 to clear the interrupt bit in
++	 * GINTSTS */
++
++	hprt0_modify.b.prtena = 0;
++	hprt0_modify.b.prtconndet = 0;
++	hprt0_modify.b.prtenchng = 0;
++	hprt0_modify.b.prtovrcurrchng = 0;
++
++	/* Port Connect Detected
++	 * Set flag and clear if detected */
++	if (dwc_otg_hcd->core_if->hibernation_suspend == 1) {
++		// Dont modify port status if we are in hibernation state
++		hprt0_modify.b.prtconndet = 1;
++		hprt0_modify.b.prtenchng = 1;
++		DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
++		hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
++		return retval;
++	}
++
++	if (hprt0.b.prtconndet) {
++		/** @todo - check if steps performed in 'else' block should be perfromed regardles adp */
++		if (dwc_otg_hcd->core_if->adp_enable &&
++				dwc_otg_hcd->core_if->adp.vbuson_timer_started == 1) {
++			DWC_PRINTF("PORT CONNECT DETECTED ----------------\n");
++			DWC_TIMER_CANCEL(dwc_otg_hcd->core_if->adp.vbuson_timer);
++			dwc_otg_hcd->core_if->adp.vbuson_timer_started = 0;
++			/* TODO - check if this is required, as
++			 * host initialization was already performed
++			 * after initial ADP probing
++			 */
++			/*dwc_otg_hcd->core_if->adp.vbuson_timer_started = 0;
++			dwc_otg_core_init(dwc_otg_hcd->core_if);
++			dwc_otg_enable_global_interrupts(dwc_otg_hcd->core_if);
++			cil_hcd_start(dwc_otg_hcd->core_if);*/
++		} else {
++
++			DWC_DEBUGPL(DBG_HCD, "--Port Interrupt HPRT0=0x%08x "
++				    "Port Connect Detected--\n", hprt0.d32);
++			dwc_otg_hcd->flags.b.port_connect_status_change = 1;
++			dwc_otg_hcd->flags.b.port_connect_status = 1;
++			hprt0_modify.b.prtconndet = 1;
++
++			/* B-Device has connected, Delete the connection timer. */
++			DWC_TIMER_CANCEL(dwc_otg_hcd->conn_timer);
++		}
++		/* The Hub driver asserts a reset when it sees port connect
++		 * status change flag */
++		retval |= 1;
++	}
++
++	/* Port Enable Changed
++	 * Clear if detected - Set internal flag if disabled */
++	if (hprt0.b.prtenchng) {
++		DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
++			    "Port Enable Changed--\n", hprt0.d32);
++		hprt0_modify.b.prtenchng = 1;
++		if (hprt0.b.prtena == 1) {
++			hfir_data_t hfir;
++			int do_reset = 0;
++			dwc_otg_core_params_t *params =
++			    dwc_otg_hcd->core_if->core_params;
++			dwc_otg_core_global_regs_t *global_regs =
++			    dwc_otg_hcd->core_if->core_global_regs;
++			dwc_otg_host_if_t *host_if =
++			    dwc_otg_hcd->core_if->host_if;
++
++			dwc_otg_hcd->flags.b.port_speed = hprt0.b.prtspd;
++			if (microframe_schedule)
++				init_hcd_usecs(dwc_otg_hcd);
++
++			/* Every time when port enables calculate
++			 * HFIR.FrInterval
++			 */
++			hfir.d32 = DWC_READ_REG32(&host_if->host_global_regs->hfir);
++			hfir.b.frint = calc_frame_interval(dwc_otg_hcd->core_if);
++			DWC_WRITE_REG32(&host_if->host_global_regs->hfir, hfir.d32);
++
++			/* Check if we need to adjust the PHY clock speed for
++			 * low power and adjust it */
++			if (params->host_support_fs_ls_low_power) {
++				gusbcfg_data_t usbcfg;
++
++				usbcfg.d32 =
++				    DWC_READ_REG32(&global_regs->gusbcfg);
++
++				if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_LOW_SPEED
++				    || hprt0.b.prtspd ==
++				    DWC_HPRT0_PRTSPD_FULL_SPEED) {
++					/*
++					 * Low power
++					 */
++					hcfg_data_t hcfg;
++					if (usbcfg.b.phylpwrclksel == 0) {
++						/* Set PHY low power clock select for FS/LS devices */
++						usbcfg.b.phylpwrclksel = 1;
++						DWC_WRITE_REG32
++						    (&global_regs->gusbcfg,
++						     usbcfg.d32);
++						do_reset = 1;
++					}
++
++					hcfg.d32 =
++					    DWC_READ_REG32
++					    (&host_if->host_global_regs->hcfg);
++
++					if (hprt0.b.prtspd ==
++					    DWC_HPRT0_PRTSPD_LOW_SPEED
++					    && params->host_ls_low_power_phy_clk
++					    ==
++					    DWC_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ)
++					{
++						/* 6 MHZ */
++						DWC_DEBUGPL(DBG_CIL,
++							    "FS_PHY programming HCFG to 6 MHz (Low Power)\n");
++						if (hcfg.b.fslspclksel !=
++						    DWC_HCFG_6_MHZ) {
++							hcfg.b.fslspclksel =
++							    DWC_HCFG_6_MHZ;
++							DWC_WRITE_REG32
++							    (&host_if->host_global_regs->hcfg,
++							     hcfg.d32);
++							do_reset = 1;
++						}
++					} else {
++						/* 48 MHZ */
++						DWC_DEBUGPL(DBG_CIL,
++							    "FS_PHY programming HCFG to 48 MHz ()\n");
++						if (hcfg.b.fslspclksel !=
++						    DWC_HCFG_48_MHZ) {
++							hcfg.b.fslspclksel =
++							    DWC_HCFG_48_MHZ;
++							DWC_WRITE_REG32
++							    (&host_if->host_global_regs->hcfg,
++							     hcfg.d32);
++							do_reset = 1;
++						}
++					}
++				} else {
++					/*
++					 * Not low power
++					 */
++					if (usbcfg.b.phylpwrclksel == 1) {
++						usbcfg.b.phylpwrclksel = 0;
++						DWC_WRITE_REG32
++						    (&global_regs->gusbcfg,
++						     usbcfg.d32);
++						do_reset = 1;
++					}
++				}
++
++				if (do_reset) {
++					DWC_TASK_SCHEDULE(dwc_otg_hcd->reset_tasklet);
++				}
++			}
++
++			if (!do_reset) {
++				/* Port has been enabled set the reset change flag */
++				dwc_otg_hcd->flags.b.port_reset_change = 1;
++			}
++		} else {
++			dwc_otg_hcd->flags.b.port_enable_change = 1;
++		}
++		retval |= 1;
++	}
++
++	/** Overcurrent Change Interrupt */
++	if (hprt0.b.prtovrcurrchng) {
++		DWC_DEBUGPL(DBG_HCD, "  --Port Interrupt HPRT0=0x%08x "
++			    "Port Overcurrent Changed--\n", hprt0.d32);
++		dwc_otg_hcd->flags.b.port_over_current_change = 1;
++		hprt0_modify.b.prtovrcurrchng = 1;
++		retval |= 1;
++	}
++
++	/* Clear Port Interrupts */
++	DWC_WRITE_REG32(dwc_otg_hcd->core_if->host_if->hprt0, hprt0_modify.d32);
++
++	return retval;
++}
++
++/** This interrupt indicates that one or more host channels has a pending
++ * interrupt. There are multiple conditions that can cause each host channel
++ * interrupt. This function determines which conditions have occurred for each
++ * host channel interrupt and handles them appropriately. */
++int32_t dwc_otg_hcd_handle_hc_intr(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	int i;
++	int retval = 0;
++	haint_data_t haint = { .d32 = 0 } ;
++
++	/* Clear appropriate bits in HCINTn to clear the interrupt bit in
++	 * GINTSTS */
++
++	if (!fiq_fsm_enable)
++		haint.d32 = dwc_otg_read_host_all_channels_intr(dwc_otg_hcd->core_if);
++
++	// Overwrite with saved interrupts from fiq handler
++	if(fiq_fsm_enable)
++	{
++		/* check the mask? */
++		local_fiq_disable();
++		fiq_fsm_spin_lock(&dwc_otg_hcd->fiq_state->lock);
++		haint.b2.chint |= ~(dwc_otg_hcd->fiq_state->haintmsk_saved.b2.chint);
++		dwc_otg_hcd->fiq_state->haintmsk_saved.b2.chint = ~0;
++		fiq_fsm_spin_unlock(&dwc_otg_hcd->fiq_state->lock);
++		local_fiq_enable();
++	}
++
++	for (i = 0; i < dwc_otg_hcd->core_if->core_params->host_channels; i++) {
++		if (haint.b2.chint & (1 << i)) {
++			retval |= dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd, i);
++		}
++	}
++
++	return retval;
++}
++
++/**
++ * Gets the actual length of a transfer after the transfer halts. _halt_status
++ * holds the reason for the halt.
++ *
++ * For IN transfers where halt_status is DWC_OTG_HC_XFER_COMPLETE,
++ * *short_read is set to 1 upon return if less than the requested
++ * number of bytes were transferred. Otherwise, *short_read is set to 0 upon
++ * return. short_read may also be NULL on entry, in which case it remains
++ * unchanged.
++ */
++static uint32_t get_actual_xfer_length(dwc_hc_t * hc,
++				       dwc_otg_hc_regs_t * hc_regs,
++				       dwc_otg_qtd_t * qtd,
++				       dwc_otg_halt_status_e halt_status,
++				       int *short_read)
++{
++	hctsiz_data_t hctsiz;
++	uint32_t length;
++
++	if (short_read != NULL) {
++		*short_read = 0;
++	}
++	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++
++	if (halt_status == DWC_OTG_HC_XFER_COMPLETE) {
++		if (hc->ep_is_in) {
++			length = hc->xfer_len - hctsiz.b.xfersize;
++			if (short_read != NULL) {
++				*short_read = (hctsiz.b.xfersize != 0);
++			}
++		} else if (hc->qh->do_split) {
++				//length = split_out_xfersize[hc->hc_num];
++				length = qtd->ssplit_out_xfer_count;
++		} else {
++			length = hc->xfer_len;
++		}
++	} else {
++		/*
++		 * Must use the hctsiz.pktcnt field to determine how much data
++		 * has been transferred. This field reflects the number of
++		 * packets that have been transferred via the USB. This is
++		 * always an integral number of packets if the transfer was
++		 * halted before its normal completion. (Can't use the
++		 * hctsiz.xfersize field because that reflects the number of
++		 * bytes transferred via the AHB, not the USB).
++		 */
++		length =
++		    (hc->start_pkt_count - hctsiz.b.pktcnt) * hc->max_packet;
++	}
++
++	return length;
++}
++
++/**
++ * Updates the state of the URB after a Transfer Complete interrupt on the
++ * host channel. Updates the actual_length field of the URB based on the
++ * number of bytes transferred via the host channel. Sets the URB status
++ * if the data transfer is finished.
++ *
++ * @return 1 if the data transfer specified by the URB is completely finished,
++ * 0 otherwise.
++ */
++static int update_urb_state_xfer_comp(dwc_hc_t * hc,
++				      dwc_otg_hc_regs_t * hc_regs,
++				      dwc_otg_hcd_urb_t * urb,
++				      dwc_otg_qtd_t * qtd)
++{
++	int xfer_done = 0;
++	int short_read = 0;
++
++	int xfer_length;
++
++	xfer_length = get_actual_xfer_length(hc, hc_regs, qtd,
++					     DWC_OTG_HC_XFER_COMPLETE,
++					     &short_read);
++
++	if (urb->actual_length + xfer_length > urb->length) {
++		printk_once(KERN_DEBUG "dwc_otg: DEVICE:%03d : %s:%d:trimming xfer length\n",
++			hc->dev_addr, __func__, __LINE__);
++		xfer_length = urb->length - urb->actual_length;
++	}
++
++	/* non DWORD-aligned buffer case handling. */
++	if (hc->align_buff && xfer_length && hc->ep_is_in) {
++		dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,
++			   xfer_length);
++	}
++
++	urb->actual_length += xfer_length;
++
++	if (xfer_length && (hc->ep_type == DWC_OTG_EP_TYPE_BULK) &&
++	    (urb->flags & URB_SEND_ZERO_PACKET)
++	    && (urb->actual_length == urb->length)
++	    && !(urb->length % hc->max_packet)) {
++		xfer_done = 0;
++	} else if (short_read || urb->actual_length >= urb->length) {
++		xfer_done = 1;
++		urb->status = 0;
++	}
++
++#ifdef DEBUG
++	{
++		hctsiz_data_t hctsiz;
++		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++		DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
++			    __func__, (hc->ep_is_in ? "IN" : "OUT"),
++			    hc->hc_num);
++		DWC_DEBUGPL(DBG_HCDV, "  hc->xfer_len %d\n", hc->xfer_len);
++		DWC_DEBUGPL(DBG_HCDV, "  hctsiz.xfersize %d\n",
++			    hctsiz.b.xfersize);
++		DWC_DEBUGPL(DBG_HCDV, "  urb->transfer_buffer_length %d\n",
++			    urb->length);
++		DWC_DEBUGPL(DBG_HCDV, "  urb->actual_length %d\n",
++			    urb->actual_length);
++		DWC_DEBUGPL(DBG_HCDV, "  short_read %d, xfer_done %d\n",
++			    short_read, xfer_done);
++	}
++#endif
++
++	return xfer_done;
++}
++
++/*
++ * Save the starting data toggle for the next transfer. The data toggle is
++ * saved in the QH for non-control transfers and it's saved in the QTD for
++ * control transfers.
++ */
++void dwc_otg_hcd_save_data_toggle(dwc_hc_t * hc,
++			     dwc_otg_hc_regs_t * hc_regs, dwc_otg_qtd_t * qtd)
++{
++	hctsiz_data_t hctsiz;
++	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++
++	if (hc->ep_type != DWC_OTG_EP_TYPE_CONTROL) {
++		dwc_otg_qh_t *qh = hc->qh;
++		if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
++			qh->data_toggle = DWC_OTG_HC_PID_DATA0;
++		} else {
++			qh->data_toggle = DWC_OTG_HC_PID_DATA1;
++		}
++	} else {
++		if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
++			qtd->data_toggle = DWC_OTG_HC_PID_DATA0;
++		} else {
++			qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
++		}
++	}
++}
++
++/**
++ * Updates the state of an Isochronous URB when the transfer is stopped for
++ * any reason. The fields of the current entry in the frame descriptor array
++ * are set based on the transfer state and the input _halt_status. Completes
++ * the Isochronous URB if all the URB frames have been completed.
++ *
++ * @return DWC_OTG_HC_XFER_COMPLETE if there are more frames remaining to be
++ * transferred in the URB. Otherwise return DWC_OTG_HC_XFER_URB_COMPLETE.
++ */
++static dwc_otg_halt_status_e
++update_isoc_urb_state(dwc_otg_hcd_t * hcd,
++		      dwc_hc_t * hc,
++		      dwc_otg_hc_regs_t * hc_regs,
++		      dwc_otg_qtd_t * qtd, dwc_otg_halt_status_e halt_status)
++{
++	dwc_otg_hcd_urb_t *urb = qtd->urb;
++	dwc_otg_halt_status_e ret_val = halt_status;
++	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
++
++	frame_desc = &urb->iso_descs[qtd->isoc_frame_index];
++	switch (halt_status) {
++	case DWC_OTG_HC_XFER_COMPLETE:
++		frame_desc->status = 0;
++		frame_desc->actual_length =
++		    get_actual_xfer_length(hc, hc_regs, qtd, halt_status, NULL);
++
++		/* non DWORD-aligned buffer case handling. */
++		if (hc->align_buff && frame_desc->actual_length && hc->ep_is_in) {
++			dwc_memcpy(urb->buf + frame_desc->offset + qtd->isoc_split_offset,
++				   hc->qh->dw_align_buf, frame_desc->actual_length);
++		}
++
++		break;
++	case DWC_OTG_HC_XFER_FRAME_OVERRUN:
++		urb->error_count++;
++		if (hc->ep_is_in) {
++			frame_desc->status = -DWC_E_NO_STREAM_RES;
++		} else {
++			frame_desc->status = -DWC_E_COMMUNICATION;
++		}
++		frame_desc->actual_length = 0;
++		break;
++	case DWC_OTG_HC_XFER_BABBLE_ERR:
++		urb->error_count++;
++		frame_desc->status = -DWC_E_OVERFLOW;
++		/* Don't need to update actual_length in this case. */
++		break;
++	case DWC_OTG_HC_XFER_XACT_ERR:
++		urb->error_count++;
++		frame_desc->status = -DWC_E_PROTOCOL;
++		frame_desc->actual_length =
++		    get_actual_xfer_length(hc, hc_regs, qtd, halt_status, NULL);
++
++		/* non DWORD-aligned buffer case handling. */
++		if (hc->align_buff && frame_desc->actual_length && hc->ep_is_in) {
++			dwc_memcpy(urb->buf + frame_desc->offset + qtd->isoc_split_offset,
++				   hc->qh->dw_align_buf, frame_desc->actual_length);
++		}
++		/* Skip whole frame */
++		if (hc->qh->do_split && (hc->ep_type == DWC_OTG_EP_TYPE_ISOC) &&
++		    hc->ep_is_in && hcd->core_if->dma_enable) {
++			qtd->complete_split = 0;
++			qtd->isoc_split_offset = 0;
++		}
++
++		break;
++	default:
++		DWC_ASSERT(1, "Unhandled _halt_status (%d)\n", halt_status);
++		break;
++	}
++	if (++qtd->isoc_frame_index == urb->packet_count) {
++		/*
++		 * urb->status is not used for isoc transfers.
++		 * The individual frame_desc statuses are used instead.
++		 */
++		hcd->fops->complete(hcd, urb->priv, urb, 0);
++		ret_val = DWC_OTG_HC_XFER_URB_COMPLETE;
++	} else {
++		ret_val = DWC_OTG_HC_XFER_COMPLETE;
++	}
++	return ret_val;
++}
++
++/**
++ * Frees the first QTD in the QH's list if free_qtd is 1. For non-periodic
++ * QHs, removes the QH from the active non-periodic schedule. If any QTDs are
++ * still linked to the QH, the QH is added to the end of the inactive
++ * non-periodic schedule. For periodic QHs, removes the QH from the periodic
++ * schedule if no more QTDs are linked to the QH.
++ */
++static void deactivate_qh(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, int free_qtd)
++{
++	int continue_split = 0;
++	dwc_otg_qtd_t *qtd;
++
++	DWC_DEBUGPL(DBG_HCDV, "  %s(%p,%p,%d)\n", __func__, hcd, qh, free_qtd);
++
++	qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
++
++	if (qtd->complete_split) {
++		continue_split = 1;
++	} else if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_MID ||
++		   qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_END) {
++		continue_split = 1;
++	}
++
++	if (free_qtd) {
++		dwc_otg_hcd_qtd_remove_and_free(hcd, qtd, qh);
++		continue_split = 0;
++	}
++
++	qh->channel = NULL;
++	dwc_otg_hcd_qh_deactivate(hcd, qh, continue_split);
++}
++
++/**
++ * Releases a host channel for use by other transfers. Attempts to select and
++ * queue more transactions since at least one host channel is available.
++ *
++ * @param hcd The HCD state structure.
++ * @param hc The host channel to release.
++ * @param qtd The QTD associated with the host channel. This QTD may be freed
++ * if the transfer is complete or an error has occurred.
++ * @param halt_status Reason the channel is being released. This status
++ * determines the actions taken by this function.
++ */
++static void release_channel(dwc_otg_hcd_t * hcd,
++			    dwc_hc_t * hc,
++			    dwc_otg_qtd_t * qtd,
++			    dwc_otg_halt_status_e halt_status)
++{
++	dwc_otg_transaction_type_e tr_type;
++	int free_qtd;
++
++	int hog_port = 0;
++
++	DWC_DEBUGPL(DBG_HCDV, "  %s: channel %d, halt_status %d, xfer_len %d\n",
++		    __func__, hc->hc_num, halt_status, hc->xfer_len);
++
++	if(fiq_fsm_enable && hc->do_split) {
++		if(!hc->ep_is_in && hc->ep_type == UE_ISOCHRONOUS) {
++			if(hc->xact_pos == DWC_HCSPLIT_XACTPOS_MID ||
++					hc->xact_pos == DWC_HCSPLIT_XACTPOS_BEGIN) {
++				hog_port = 0;
++			}
++		}
++	}
++
++	switch (halt_status) {
++	case DWC_OTG_HC_XFER_URB_COMPLETE:
++		free_qtd = 1;
++		break;
++	case DWC_OTG_HC_XFER_AHB_ERR:
++	case DWC_OTG_HC_XFER_STALL:
++	case DWC_OTG_HC_XFER_BABBLE_ERR:
++		free_qtd = 1;
++		break;
++	case DWC_OTG_HC_XFER_XACT_ERR:
++		if (qtd->error_count >= 3) {
++			DWC_DEBUGPL(DBG_HCDV,
++				    "  Complete URB with transaction error\n");
++			free_qtd = 1;
++			qtd->urb->status = -DWC_E_PROTOCOL;
++			hcd->fops->complete(hcd, qtd->urb->priv,
++					    qtd->urb, -DWC_E_PROTOCOL);
++		} else {
++			free_qtd = 0;
++		}
++		break;
++	case DWC_OTG_HC_XFER_URB_DEQUEUE:
++		/*
++		 * The QTD has already been removed and the QH has been
++		 * deactivated. Don't want to do anything except release the
++		 * host channel and try to queue more transfers.
++		 */
++		goto cleanup;
++	case DWC_OTG_HC_XFER_NO_HALT_STATUS:
++		free_qtd = 0;
++		break;
++	case DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE:
++		DWC_DEBUGPL(DBG_HCDV,
++			"  Complete URB with I/O error\n");
++		free_qtd = 1;
++		qtd->urb->status = -DWC_E_IO;
++		hcd->fops->complete(hcd, qtd->urb->priv,
++			qtd->urb, -DWC_E_IO);
++		break;
++	default:
++		free_qtd = 0;
++		break;
++	}
++
++	deactivate_qh(hcd, hc->qh, free_qtd);
++
++cleanup:
++	/*
++	 * Release the host channel for use by other transfers. The cleanup
++	 * function clears the channel interrupt enables and conditions, so
++	 * there's no need to clear the Channel Halted interrupt separately.
++	 */
++	if (fiq_fsm_enable && hcd->fiq_state->channel[hc->hc_num].fsm != FIQ_PASSTHROUGH)
++		dwc_otg_cleanup_fiq_channel(hcd, hc->hc_num);
++	dwc_otg_hc_cleanup(hcd->core_if, hc);
++	DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
++
++	if (!microframe_schedule) {
++		switch (hc->ep_type) {
++		case DWC_OTG_EP_TYPE_CONTROL:
++		case DWC_OTG_EP_TYPE_BULK:
++			hcd->non_periodic_channels--;
++			break;
++
++		default:
++			/*
++			 * Don't release reservations for periodic channels here.
++			 * That's done when a periodic transfer is descheduled (i.e.
++			 * when the QH is removed from the periodic schedule).
++			 */
++			break;
++		}
++	} else {
++		hcd->available_host_channels++;
++		fiq_print(FIQDBG_INT, hcd->fiq_state, "AHC = %d ", hcd->available_host_channels);
++	}
++
++	/* Try to queue more transfers now that there's a free channel. */
++	tr_type = dwc_otg_hcd_select_transactions(hcd);
++	if (tr_type != DWC_OTG_TRANSACTION_NONE) {
++		dwc_otg_hcd_queue_transactions(hcd, tr_type);
++	}
++}
++
++/**
++ * Halts a host channel. If the channel cannot be halted immediately because
++ * the request queue is full, this function ensures that the FIFO empty
++ * interrupt for the appropriate queue is enabled so that the halt request can
++ * be queued when there is space in the request queue.
++ *
++ * This function may also be called in DMA mode. In that case, the channel is
++ * simply released since the core always halts the channel automatically in
++ * DMA mode.
++ */
++static void halt_channel(dwc_otg_hcd_t * hcd,
++			 dwc_hc_t * hc,
++			 dwc_otg_qtd_t * qtd, dwc_otg_halt_status_e halt_status)
++{
++	if (hcd->core_if->dma_enable) {
++		release_channel(hcd, hc, qtd, halt_status);
++		return;
++	}
++
++	/* Slave mode processing... */
++	dwc_otg_hc_halt(hcd->core_if, hc, halt_status);
++
++	if (hc->halt_on_queue) {
++		gintmsk_data_t gintmsk = {.d32 = 0 };
++		dwc_otg_core_global_regs_t *global_regs;
++		global_regs = hcd->core_if->core_global_regs;
++
++		if (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
++		    hc->ep_type == DWC_OTG_EP_TYPE_BULK) {
++			/*
++			 * Make sure the Non-periodic Tx FIFO empty interrupt
++			 * is enabled so that the non-periodic schedule will
++			 * be processed.
++			 */
++			gintmsk.b.nptxfempty = 1;
++			if (fiq_enable) {
++				local_fiq_disable();
++				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
++				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++				local_fiq_enable();
++			} else {
++				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
++			}
++		} else {
++			/*
++			 * Move the QH from the periodic queued schedule to
++			 * the periodic assigned schedule. This allows the
++			 * halt to be queued when the periodic schedule is
++			 * processed.
++			 */
++			DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_assigned,
++					   &hc->qh->qh_list_entry);
++
++			/*
++			 * Make sure the Periodic Tx FIFO Empty interrupt is
++			 * enabled so that the periodic schedule will be
++			 * processed.
++			 */
++			gintmsk.b.ptxfempty = 1;
++			if (fiq_enable) {
++				local_fiq_disable();
++				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
++				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++				local_fiq_enable();
++			} else {
++				DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmsk.d32);
++			}
++		}
++	}
++}
++
++/**
++ * Performs common cleanup for non-periodic transfers after a Transfer
++ * Complete interrupt. This function should be called after any endpoint type
++ * specific handling is finished to release the host channel.
++ */
++static void complete_non_periodic_xfer(dwc_otg_hcd_t * hcd,
++				       dwc_hc_t * hc,
++				       dwc_otg_hc_regs_t * hc_regs,
++				       dwc_otg_qtd_t * qtd,
++				       dwc_otg_halt_status_e halt_status)
++{
++	hcint_data_t hcint;
++
++	qtd->error_count = 0;
++
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++	if (hcint.b.nyet) {
++		/*
++		 * Got a NYET on the last transaction of the transfer. This
++		 * means that the endpoint should be in the PING state at the
++		 * beginning of the next transfer.
++		 */
++		hc->qh->ping_state = 1;
++		clear_hc_int(hc_regs, nyet);
++	}
++
++	/*
++	 * Always halt and release the host channel to make it available for
++	 * more transfers. There may still be more phases for a control
++	 * transfer or more data packets for a bulk transfer at this point,
++	 * but the host channel is still halted. A channel will be reassigned
++	 * to the transfer when the non-periodic schedule is processed after
++	 * the channel is released. This allows transactions to be queued
++	 * properly via dwc_otg_hcd_queue_transactions, which also enables the
++	 * Tx FIFO Empty interrupt if necessary.
++	 */
++	if (hc->ep_is_in) {
++		/*
++		 * IN transfers in Slave mode require an explicit disable to
++		 * halt the channel. (In DMA mode, this call simply releases
++		 * the channel.)
++		 */
++		halt_channel(hcd, hc, qtd, halt_status);
++	} else {
++		/*
++		 * The channel is automatically disabled by the core for OUT
++		 * transfers in Slave mode.
++		 */
++		release_channel(hcd, hc, qtd, halt_status);
++	}
++}
++
++/**
++ * Performs common cleanup for periodic transfers after a Transfer Complete
++ * interrupt. This function should be called after any endpoint type specific
++ * handling is finished to release the host channel.
++ */
++static void complete_periodic_xfer(dwc_otg_hcd_t * hcd,
++				   dwc_hc_t * hc,
++				   dwc_otg_hc_regs_t * hc_regs,
++				   dwc_otg_qtd_t * qtd,
++				   dwc_otg_halt_status_e halt_status)
++{
++	hctsiz_data_t hctsiz;
++	qtd->error_count = 0;
++
++	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++	if (!hc->ep_is_in || hctsiz.b.pktcnt == 0) {
++		/* Core halts channel in these cases. */
++		release_channel(hcd, hc, qtd, halt_status);
++	} else {
++		/* Flush any outstanding requests from the Tx queue. */
++		halt_channel(hcd, hc, qtd, halt_status);
++	}
++}
++
++static int32_t handle_xfercomp_isoc_split_in(dwc_otg_hcd_t * hcd,
++					     dwc_hc_t * hc,
++					     dwc_otg_hc_regs_t * hc_regs,
++					     dwc_otg_qtd_t * qtd)
++{
++	uint32_t len;
++	struct dwc_otg_hcd_iso_packet_desc *frame_desc;
++	frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
++
++	len = get_actual_xfer_length(hc, hc_regs, qtd,
++				     DWC_OTG_HC_XFER_COMPLETE, NULL);
++
++	if (!len) {
++		qtd->complete_split = 0;
++		qtd->isoc_split_offset = 0;
++		return 0;
++	}
++	frame_desc->actual_length += len;
++
++	if (hc->align_buff && len)
++		dwc_memcpy(qtd->urb->buf + frame_desc->offset +
++			   qtd->isoc_split_offset, hc->qh->dw_align_buf, len);
++	qtd->isoc_split_offset += len;
++
++	if (frame_desc->length == frame_desc->actual_length) {
++		frame_desc->status = 0;
++		qtd->isoc_frame_index++;
++		qtd->complete_split = 0;
++		qtd->isoc_split_offset = 0;
++	}
++
++	if (qtd->isoc_frame_index == qtd->urb->packet_count) {
++		hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++	} else {
++		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++	}
++
++	return 1;		/* Indicates that channel released */
++}
++
++/**
++ * Handles a host channel Transfer Complete interrupt. This handler may be
++ * called in either DMA mode or Slave mode.
++ */
++static int32_t handle_hc_xfercomp_intr(dwc_otg_hcd_t * hcd,
++				       dwc_hc_t * hc,
++				       dwc_otg_hc_regs_t * hc_regs,
++				       dwc_otg_qtd_t * qtd)
++{
++	int urb_xfer_done;
++	dwc_otg_halt_status_e halt_status = DWC_OTG_HC_XFER_COMPLETE;
++	dwc_otg_hcd_urb_t *urb = qtd->urb;
++	int pipe_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
++
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "Transfer Complete--\n", hc->hc_num);
++
++	if (hcd->core_if->dma_desc_enable) {
++		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs, halt_status);
++		if (pipe_type == UE_ISOCHRONOUS) {
++			/* Do not disable the interrupt, just clear it */
++			clear_hc_int(hc_regs, xfercomp);
++			return 1;
++		}
++		goto handle_xfercomp_done;
++	}
++
++	/*
++	 * Handle xfer complete on CSPLIT.
++	 */
++
++	if (hc->qh->do_split) {
++		if ((hc->ep_type == DWC_OTG_EP_TYPE_ISOC) && hc->ep_is_in
++		    && hcd->core_if->dma_enable) {
++			if (qtd->complete_split
++			    && handle_xfercomp_isoc_split_in(hcd, hc, hc_regs,
++							     qtd))
++				goto handle_xfercomp_done;
++		} else {
++			qtd->complete_split = 0;
++		}
++	}
++
++	/* Update the QTD and URB states. */
++	switch (pipe_type) {
++	case UE_CONTROL:
++		switch (qtd->control_phase) {
++		case DWC_OTG_CONTROL_SETUP:
++			if (urb->length > 0) {
++				qtd->control_phase = DWC_OTG_CONTROL_DATA;
++			} else {
++				qtd->control_phase = DWC_OTG_CONTROL_STATUS;
++			}
++			DWC_DEBUGPL(DBG_HCDV,
++				    "  Control setup transaction done\n");
++			halt_status = DWC_OTG_HC_XFER_COMPLETE;
++			break;
++		case DWC_OTG_CONTROL_DATA:{
++				urb_xfer_done =
++				    update_urb_state_xfer_comp(hc, hc_regs, urb,
++							       qtd);
++				if (urb_xfer_done) {
++					qtd->control_phase =
++					    DWC_OTG_CONTROL_STATUS;
++					DWC_DEBUGPL(DBG_HCDV,
++						    "  Control data transfer done\n");
++				} else {
++					dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++				}
++				halt_status = DWC_OTG_HC_XFER_COMPLETE;
++				break;
++			}
++		case DWC_OTG_CONTROL_STATUS:
++			DWC_DEBUGPL(DBG_HCDV, "  Control transfer complete\n");
++			if (urb->status == -DWC_E_IN_PROGRESS) {
++				urb->status = 0;
++			}
++			hcd->fops->complete(hcd, urb->priv, urb, urb->status);
++			halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
++			break;
++		}
++
++		complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
++		break;
++	case UE_BULK:
++		DWC_DEBUGPL(DBG_HCDV, "  Bulk transfer complete\n");
++		urb_xfer_done =
++		    update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
++		if (urb_xfer_done) {
++			hcd->fops->complete(hcd, urb->priv, urb, urb->status);
++			halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
++		} else {
++			halt_status = DWC_OTG_HC_XFER_COMPLETE;
++		}
++
++		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++		complete_non_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
++		break;
++	case UE_INTERRUPT:
++		DWC_DEBUGPL(DBG_HCDV, "  Interrupt transfer complete\n");
++		urb_xfer_done =
++			update_urb_state_xfer_comp(hc, hc_regs, urb, qtd);
++
++		/*
++		 * Interrupt URB is done on the first transfer complete
++		 * interrupt.
++		 */
++		if (urb_xfer_done) {
++				hcd->fops->complete(hcd, urb->priv, urb, urb->status);
++				halt_status = DWC_OTG_HC_XFER_URB_COMPLETE;
++		} else {
++				halt_status = DWC_OTG_HC_XFER_COMPLETE;
++		}
++
++		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++		complete_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
++		break;
++	case UE_ISOCHRONOUS:
++		DWC_DEBUGPL(DBG_HCDV, "  Isochronous transfer complete\n");
++		if (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_ALL) {
++			halt_status =
++			    update_isoc_urb_state(hcd, hc, hc_regs, qtd,
++						  DWC_OTG_HC_XFER_COMPLETE);
++		}
++		complete_periodic_xfer(hcd, hc, hc_regs, qtd, halt_status);
++		break;
++	}
++
++handle_xfercomp_done:
++	disable_hc_int(hc_regs, xfercompl);
++
++	return 1;
++}
++
++/**
++ * Handles a host channel STALL interrupt. This handler may be called in
++ * either DMA mode or Slave mode.
++ */
++static int32_t handle_hc_stall_intr(dwc_otg_hcd_t * hcd,
++				    dwc_hc_t * hc,
++				    dwc_otg_hc_regs_t * hc_regs,
++				    dwc_otg_qtd_t * qtd)
++{
++	dwc_otg_hcd_urb_t *urb = qtd->urb;
++	int pipe_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
++
++	DWC_DEBUGPL(DBG_HCD, "--Host Channel %d Interrupt: "
++		    "STALL Received--\n", hc->hc_num);
++
++	if (hcd->core_if->dma_desc_enable) {
++		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs, DWC_OTG_HC_XFER_STALL);
++		goto handle_stall_done;
++	}
++
++	if (pipe_type == UE_CONTROL) {
++		hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_PIPE);
++	}
++
++	if (pipe_type == UE_BULK || pipe_type == UE_INTERRUPT) {
++		hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_PIPE);
++		/*
++		 * USB protocol requires resetting the data toggle for bulk
++		 * and interrupt endpoints when a CLEAR_FEATURE(ENDPOINT_HALT)
++		 * setup command is issued to the endpoint. Anticipate the
++		 * CLEAR_FEATURE command since a STALL has occurred and reset
++		 * the data toggle now.
++		 */
++		hc->qh->data_toggle = 0;
++	}
++
++	halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_STALL);
++
++handle_stall_done:
++	disable_hc_int(hc_regs, stall);
++
++	return 1;
++}
++
++/*
++ * Updates the state of the URB when a transfer has been stopped due to an
++ * abnormal condition before the transfer completes. Modifies the
++ * actual_length field of the URB to reflect the number of bytes that have
++ * actually been transferred via the host channel.
++ */
++static void update_urb_state_xfer_intr(dwc_hc_t * hc,
++				       dwc_otg_hc_regs_t * hc_regs,
++				       dwc_otg_hcd_urb_t * urb,
++				       dwc_otg_qtd_t * qtd,
++				       dwc_otg_halt_status_e halt_status)
++{
++	uint32_t bytes_transferred = get_actual_xfer_length(hc, hc_regs, qtd,
++							    halt_status, NULL);
++
++	if (urb->actual_length + bytes_transferred > urb->length) {
++		printk_once(KERN_DEBUG "dwc_otg: DEVICE:%03d : %s:%d:trimming xfer length\n",
++			hc->dev_addr, __func__, __LINE__);
++		bytes_transferred = urb->length - urb->actual_length;
++	}
++
++	/* non DWORD-aligned buffer case handling. */
++	if (hc->align_buff && bytes_transferred && hc->ep_is_in) {
++		dwc_memcpy(urb->buf + urb->actual_length, hc->qh->dw_align_buf,
++			   bytes_transferred);
++	}
++
++	urb->actual_length += bytes_transferred;
++
++#ifdef DEBUG
++	{
++		hctsiz_data_t hctsiz;
++		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++		DWC_DEBUGPL(DBG_HCDV, "DWC_otg: %s: %s, channel %d\n",
++			    __func__, (hc->ep_is_in ? "IN" : "OUT"),
++			    hc->hc_num);
++		DWC_DEBUGPL(DBG_HCDV, "  hc->start_pkt_count %d\n",
++			    hc->start_pkt_count);
++		DWC_DEBUGPL(DBG_HCDV, "  hctsiz.pktcnt %d\n", hctsiz.b.pktcnt);
++		DWC_DEBUGPL(DBG_HCDV, "  hc->max_packet %d\n", hc->max_packet);
++		DWC_DEBUGPL(DBG_HCDV, "  bytes_transferred %d\n",
++			    bytes_transferred);
++		DWC_DEBUGPL(DBG_HCDV, "  urb->actual_length %d\n",
++			    urb->actual_length);
++		DWC_DEBUGPL(DBG_HCDV, "  urb->transfer_buffer_length %d\n",
++			    urb->length);
++	}
++#endif
++}
++
++/**
++ * Handles a host channel NAK interrupt. This handler may be called in either
++ * DMA mode or Slave mode.
++ */
++static int32_t handle_hc_nak_intr(dwc_otg_hcd_t * hcd,
++				  dwc_hc_t * hc,
++				  dwc_otg_hc_regs_t * hc_regs,
++				  dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "NAK Received--\n", hc->hc_num);
++
++	/*
++	 * When we get bulk NAKs then remember this so we holdoff on this qh until
++	 * the beginning of the next frame
++	 */
++	switch(dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
++		case UE_BULK:
++		case UE_CONTROL:
++		if (nak_holdoff && qtd->qh->do_split)
++			hc->qh->nak_frame = dwc_otg_hcd_get_frame_number(hcd);
++	}
++
++	/*
++	 * Handle NAK for IN/OUT SSPLIT/CSPLIT transfers, bulk, control, and
++	 * interrupt.  Re-start the SSPLIT transfer.
++	 */
++	if (hc->do_split) {
++		if (hc->complete_split) {
++			qtd->error_count = 0;
++		}
++		qtd->complete_split = 0;
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
++		goto handle_nak_done;
++	}
++
++	switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
++	case UE_CONTROL:
++	case UE_BULK:
++		if (hcd->core_if->dma_enable && hc->ep_is_in) {
++			/*
++			 * NAK interrupts are enabled on bulk/control IN
++			 * transfers in DMA mode for the sole purpose of
++			 * resetting the error count after a transaction error
++			 * occurs. The core will continue transferring data.
++			 * Disable other interrupts unmasked for the same
++			 * reason.
++			 */
++			disable_hc_int(hc_regs, datatglerr);
++			disable_hc_int(hc_regs, ack);
++			qtd->error_count = 0;
++			goto handle_nak_done;
++		}
++
++		/*
++		 * NAK interrupts normally occur during OUT transfers in DMA
++		 * or Slave mode. For IN transfers, more requests will be
++		 * queued as request queue space is available.
++		 */
++		qtd->error_count = 0;
++
++		if (!hc->qh->ping_state) {
++			update_urb_state_xfer_intr(hc, hc_regs,
++						   qtd->urb, qtd,
++						   DWC_OTG_HC_XFER_NAK);
++			dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++
++			if (hc->speed == DWC_OTG_EP_SPEED_HIGH)
++				hc->qh->ping_state = 1;
++		}
++
++		/*
++		 * Halt the channel so the transfer can be re-started from
++		 * the appropriate point or the PING protocol will
++		 * start/continue.
++		 */
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
++		break;
++	case UE_INTERRUPT:
++		qtd->error_count = 0;
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NAK);
++		break;
++	case UE_ISOCHRONOUS:
++		/* Should never get called for isochronous transfers. */
++		DWC_ASSERT(1, "NACK interrupt for ISOC transfer\n");
++		break;
++	}
++
++handle_nak_done:
++	disable_hc_int(hc_regs, nak);
++
++	return 1;
++}
++
++/**
++ * Handles a host channel ACK interrupt. This interrupt is enabled when
++ * performing the PING protocol in Slave mode, when errors occur during
++ * either Slave mode or DMA mode, and during Start Split transactions.
++ */
++static int32_t handle_hc_ack_intr(dwc_otg_hcd_t * hcd,
++				  dwc_hc_t * hc,
++				  dwc_otg_hc_regs_t * hc_regs,
++				  dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "ACK Received--\n", hc->hc_num);
++
++	if (hc->do_split) {
++		/*
++		 * Handle ACK on SSPLIT.
++		 * ACK should not occur in CSPLIT.
++		 */
++		if (!hc->ep_is_in && hc->data_pid_start != DWC_OTG_HC_PID_SETUP) {
++			qtd->ssplit_out_xfer_count = hc->xfer_len;
++		}
++		if (!(hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in)) {
++			/* Don't need complete for isochronous out transfers. */
++			qtd->complete_split = 1;
++		}
++
++		/* ISOC OUT */
++		if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
++			switch (hc->xact_pos) {
++			case DWC_HCSPLIT_XACTPOS_ALL:
++				break;
++			case DWC_HCSPLIT_XACTPOS_END:
++				qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
++				qtd->isoc_split_offset = 0;
++				break;
++			case DWC_HCSPLIT_XACTPOS_BEGIN:
++			case DWC_HCSPLIT_XACTPOS_MID:
++				/*
++				 * For BEGIN or MID, calculate the length for
++				 * the next microframe to determine the correct
++				 * SSPLIT token, either MID or END.
++				 */
++				{
++					struct dwc_otg_hcd_iso_packet_desc
++					*frame_desc;
++
++					frame_desc =
++					    &qtd->urb->
++					    iso_descs[qtd->isoc_frame_index];
++					qtd->isoc_split_offset += 188;
++
++					if ((frame_desc->length -
++					     qtd->isoc_split_offset) <= 188) {
++						qtd->isoc_split_pos =
++						    DWC_HCSPLIT_XACTPOS_END;
++					} else {
++						qtd->isoc_split_pos =
++						    DWC_HCSPLIT_XACTPOS_MID;
++					}
++
++				}
++				break;
++			}
++		} else {
++			halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
++		}
++	} else {
++		/*
++		 * An unmasked ACK on a non-split DMA transaction is
++		 * for the sole purpose of resetting error counts. Disable other
++		 * interrupts unmasked for the same reason.
++		 */
++		if(hcd->core_if->dma_enable) {
++			disable_hc_int(hc_regs, datatglerr);
++			disable_hc_int(hc_regs, nak);
++		}
++		qtd->error_count = 0;
++
++		if (hc->qh->ping_state) {
++			hc->qh->ping_state = 0;
++			/*
++			 * Halt the channel so the transfer can be re-started
++			 * from the appropriate point. This only happens in
++			 * Slave mode. In DMA mode, the ping_state is cleared
++			 * when the transfer is started because the core
++			 * automatically executes the PING, then the transfer.
++			 */
++			halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK);
++		}
++	}
++
++	/*
++	 * If the ACK occurred when _not_ in the PING state, let the channel
++	 * continue transferring data after clearing the error count.
++	 */
++
++	disable_hc_int(hc_regs, ack);
++
++	return 1;
++}
++
++/**
++ * Handles a host channel NYET interrupt. This interrupt should only occur on
++ * Bulk and Control OUT endpoints and for complete split transactions. If a
++ * NYET occurs at the same time as a Transfer Complete interrupt, it is
++ * handled in the xfercomp interrupt handler, not here. This handler may be
++ * called in either DMA mode or Slave mode.
++ */
++static int32_t handle_hc_nyet_intr(dwc_otg_hcd_t * hcd,
++				   dwc_hc_t * hc,
++				   dwc_otg_hc_regs_t * hc_regs,
++				   dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "NYET Received--\n", hc->hc_num);
++
++	/*
++	 * NYET on CSPLIT
++	 * re-do the CSPLIT immediately on non-periodic
++	 */
++	if (hc->do_split && hc->complete_split) {
++		if (hc->ep_is_in && (hc->ep_type == DWC_OTG_EP_TYPE_ISOC)
++		    && hcd->core_if->dma_enable) {
++			qtd->complete_split = 0;
++			qtd->isoc_split_offset = 0;
++			if (++qtd->isoc_frame_index == qtd->urb->packet_count) {
++				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++			}
++			else
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++			goto handle_nyet_done;
++		}
++
++		if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
++		    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++			int frnum = dwc_otg_hcd_get_frame_number(hcd);
++
++			// With the FIQ running we only ever see the failed NYET
++			if (dwc_full_frame_num(frnum) !=
++			    dwc_full_frame_num(hc->qh->sched_frame) ||
++			    fiq_fsm_enable) {
++				/*
++				 * No longer in the same full speed frame.
++				 * Treat this as a transaction error.
++				 */
++#if 0
++				/** @todo Fix system performance so this can
++				 * be treated as an error. Right now complete
++				 * splits cannot be scheduled precisely enough
++				 * due to other system activity, so this error
++				 * occurs regularly in Slave mode.
++				 */
++				qtd->error_count++;
++#endif
++				qtd->complete_split = 0;
++				halt_channel(hcd, hc, qtd,
++					     DWC_OTG_HC_XFER_XACT_ERR);
++				/** @todo add support for isoc release */
++				goto handle_nyet_done;
++			}
++		}
++
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
++		goto handle_nyet_done;
++	}
++
++	hc->qh->ping_state = 1;
++	qtd->error_count = 0;
++
++	update_urb_state_xfer_intr(hc, hc_regs, qtd->urb, qtd,
++				   DWC_OTG_HC_XFER_NYET);
++	dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++
++	/*
++	 * Halt the channel and re-start the transfer so the PING
++	 * protocol will start.
++	 */
++	halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NYET);
++
++handle_nyet_done:
++	disable_hc_int(hc_regs, nyet);
++	return 1;
++}
++
++/**
++ * Handles a host channel babble interrupt. This handler may be called in
++ * either DMA mode or Slave mode.
++ */
++static int32_t handle_hc_babble_intr(dwc_otg_hcd_t * hcd,
++				     dwc_hc_t * hc,
++				     dwc_otg_hc_regs_t * hc_regs,
++				     dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "Babble Error--\n", hc->hc_num);
++
++	if (hcd->core_if->dma_desc_enable) {
++		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
++					       DWC_OTG_HC_XFER_BABBLE_ERR);
++		goto handle_babble_done;
++	}
++
++	if (hc->ep_type != DWC_OTG_EP_TYPE_ISOC) {
++		hcd->fops->complete(hcd, qtd->urb->priv,
++				    qtd->urb, -DWC_E_OVERFLOW);
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_BABBLE_ERR);
++	} else {
++		dwc_otg_halt_status_e halt_status;
++		halt_status = update_isoc_urb_state(hcd, hc, hc_regs, qtd,
++						    DWC_OTG_HC_XFER_BABBLE_ERR);
++		halt_channel(hcd, hc, qtd, halt_status);
++	}
++
++handle_babble_done:
++	disable_hc_int(hc_regs, bblerr);
++	return 1;
++}
++
++/**
++ * Handles a host channel AHB error interrupt. This handler is only called in
++ * DMA mode.
++ */
++static int32_t handle_hc_ahberr_intr(dwc_otg_hcd_t * hcd,
++				     dwc_hc_t * hc,
++				     dwc_otg_hc_regs_t * hc_regs,
++				     dwc_otg_qtd_t * qtd)
++{
++	hcchar_data_t hcchar;
++	hcsplt_data_t hcsplt;
++	hctsiz_data_t hctsiz;
++	uint32_t hcdma;
++	char *pipetype, *speed;
++
++	dwc_otg_hcd_urb_t *urb = qtd->urb;
++
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "AHB Error--\n", hc->hc_num);
++
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
++	hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++	hcdma = DWC_READ_REG32(&hc_regs->hcdma);
++
++	DWC_ERROR("AHB ERROR, Channel %d\n", hc->hc_num);
++	DWC_ERROR("  hcchar 0x%08x, hcsplt 0x%08x\n", hcchar.d32, hcsplt.d32);
++	DWC_ERROR("  hctsiz 0x%08x, hcdma 0x%08x\n", hctsiz.d32, hcdma);
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Enqueue\n");
++	DWC_ERROR("  Device address: %d\n",
++		  dwc_otg_hcd_get_dev_addr(&urb->pipe_info));
++	DWC_ERROR("  Endpoint: %d, %s\n",
++		  dwc_otg_hcd_get_ep_num(&urb->pipe_info),
++		  (dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? "IN" : "OUT"));
++
++	switch (dwc_otg_hcd_get_pipe_type(&urb->pipe_info)) {
++	case UE_CONTROL:
++		pipetype = "CONTROL";
++		break;
++	case UE_BULK:
++		pipetype = "BULK";
++		break;
++	case UE_INTERRUPT:
++		pipetype = "INTERRUPT";
++		break;
++	case UE_ISOCHRONOUS:
++		pipetype = "ISOCHRONOUS";
++		break;
++	default:
++		pipetype = "UNKNOWN";
++		break;
++	}
++
++	DWC_ERROR("  Endpoint type: %s\n", pipetype);
++
++	switch (hc->speed) {
++	case DWC_OTG_EP_SPEED_HIGH:
++		speed = "HIGH";
++		break;
++	case DWC_OTG_EP_SPEED_FULL:
++		speed = "FULL";
++		break;
++	case DWC_OTG_EP_SPEED_LOW:
++		speed = "LOW";
++		break;
++	default:
++		speed = "UNKNOWN";
++		break;
++	};
++
++	DWC_ERROR("  Speed: %s\n", speed);
++
++	DWC_ERROR("  Max packet size: %d\n",
++		  dwc_otg_hcd_get_mps(&urb->pipe_info));
++	DWC_ERROR("  Data buffer length: %d\n", urb->length);
++	DWC_ERROR("  Transfer buffer: %p, Transfer DMA: %p\n",
++		  urb->buf, (void *)urb->dma);
++	DWC_ERROR("  Setup buffer: %p, Setup DMA: %p\n",
++		  urb->setup_packet, (void *)urb->setup_dma);
++	DWC_ERROR("  Interval: %d\n", urb->interval);
++
++	/* Core haltes the channel for Descriptor DMA mode */
++	if (hcd->core_if->dma_desc_enable) {
++		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
++					       DWC_OTG_HC_XFER_AHB_ERR);
++		goto handle_ahberr_done;
++	}
++
++	hcd->fops->complete(hcd, urb->priv, urb, -DWC_E_IO);
++
++	/*
++	 * Force a channel halt. Don't call halt_channel because that won't
++	 * write to the HCCHARn register in DMA mode to force the halt.
++	 */
++	dwc_otg_hc_halt(hcd->core_if, hc, DWC_OTG_HC_XFER_AHB_ERR);
++handle_ahberr_done:
++	disable_hc_int(hc_regs, ahberr);
++	return 1;
++}
++
++/**
++ * Handles a host channel transaction error interrupt. This handler may be
++ * called in either DMA mode or Slave mode.
++ */
++static int32_t handle_hc_xacterr_intr(dwc_otg_hcd_t * hcd,
++				      dwc_hc_t * hc,
++				      dwc_otg_hc_regs_t * hc_regs,
++				      dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "Transaction Error--\n", hc->hc_num);
++
++	if (hcd->core_if->dma_desc_enable) {
++		dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
++					       DWC_OTG_HC_XFER_XACT_ERR);
++		goto handle_xacterr_done;
++	}
++
++	switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
++	case UE_CONTROL:
++	case UE_BULK:
++		qtd->error_count++;
++		if (!hc->qh->ping_state) {
++
++			update_urb_state_xfer_intr(hc, hc_regs,
++						   qtd->urb, qtd,
++						   DWC_OTG_HC_XFER_XACT_ERR);
++			dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++			if (!hc->ep_is_in && hc->speed == DWC_OTG_EP_SPEED_HIGH) {
++				hc->qh->ping_state = 1;
++			}
++		}
++
++		/*
++		 * Halt the channel so the transfer can be re-started from
++		 * the appropriate point or the PING protocol will start.
++		 */
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++		break;
++	case UE_INTERRUPT:
++		qtd->error_count++;
++		if (hc->do_split && hc->complete_split) {
++			qtd->complete_split = 0;
++		}
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++		break;
++	case UE_ISOCHRONOUS:
++		{
++			dwc_otg_halt_status_e halt_status;
++			halt_status =
++			    update_isoc_urb_state(hcd, hc, hc_regs, qtd,
++						  DWC_OTG_HC_XFER_XACT_ERR);
++
++			halt_channel(hcd, hc, qtd, halt_status);
++		}
++		break;
++	}
++handle_xacterr_done:
++	disable_hc_int(hc_regs, xacterr);
++
++	return 1;
++}
++
++/**
++ * Handles a host channel frame overrun interrupt. This handler may be called
++ * in either DMA mode or Slave mode.
++ */
++static int32_t handle_hc_frmovrun_intr(dwc_otg_hcd_t * hcd,
++				       dwc_hc_t * hc,
++				       dwc_otg_hc_regs_t * hc_regs,
++				       dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "Frame Overrun--\n", hc->hc_num);
++
++	switch (dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
++	case UE_CONTROL:
++	case UE_BULK:
++		break;
++	case UE_INTERRUPT:
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_FRAME_OVERRUN);
++		break;
++	case UE_ISOCHRONOUS:
++		{
++			dwc_otg_halt_status_e halt_status;
++			halt_status =
++			    update_isoc_urb_state(hcd, hc, hc_regs, qtd,
++						  DWC_OTG_HC_XFER_FRAME_OVERRUN);
++
++			halt_channel(hcd, hc, qtd, halt_status);
++		}
++		break;
++	}
++
++	disable_hc_int(hc_regs, frmovrun);
++
++	return 1;
++}
++
++/**
++ * Handles a host channel data toggle error interrupt. This handler may be
++ * called in either DMA mode or Slave mode.
++ */
++static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t * hcd,
++					 dwc_hc_t * hc,
++					 dwc_otg_hc_regs_t * hc_regs,
++					 dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		"Data Toggle Error on %s transfer--\n",
++		hc->hc_num, (hc->ep_is_in ? "IN" : "OUT"));
++
++	/* Data toggles on split transactions cause the hc to halt.
++	 * restart transfer */
++	if(hc->qh->do_split)
++	{
++		qtd->error_count++;
++		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++		update_urb_state_xfer_intr(hc, hc_regs,
++			qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++	} else if (hc->ep_is_in) {
++		/* An unmasked data toggle error on a non-split DMA transaction is
++		 * for the sole purpose of resetting error counts. Disable other
++		 * interrupts unmasked for the same reason.
++		 */
++		if(hcd->core_if->dma_enable) {
++			disable_hc_int(hc_regs, ack);
++			disable_hc_int(hc_regs, nak);
++		}
++		qtd->error_count = 0;
++	}
++
++	disable_hc_int(hc_regs, datatglerr);
++
++	return 1;
++}
++
++#ifdef DEBUG
++/**
++ * This function is for debug only. It checks that a valid halt status is set
++ * and that HCCHARn.chdis is clear. If there's a problem, corrective action is
++ * taken and a warning is issued.
++ * @return 1 if halt status is ok, 0 otherwise.
++ */
++static inline int halt_status_ok(dwc_otg_hcd_t * hcd,
++				 dwc_hc_t * hc,
++				 dwc_otg_hc_regs_t * hc_regs,
++				 dwc_otg_qtd_t * qtd)
++{
++	hcchar_data_t hcchar;
++	hctsiz_data_t hctsiz;
++	hcint_data_t hcint;
++	hcintmsk_data_t hcintmsk;
++	hcsplt_data_t hcsplt;
++
++	if (hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS) {
++		/*
++		 * This code is here only as a check. This condition should
++		 * never happen. Ignore the halt if it does occur.
++		 */
++		hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++		hctsiz.d32 = DWC_READ_REG32(&hc_regs->hctsiz);
++		hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++		hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
++		hcsplt.d32 = DWC_READ_REG32(&hc_regs->hcsplt);
++		DWC_WARN
++		    ("%s: hc->halt_status == DWC_OTG_HC_XFER_NO_HALT_STATUS, "
++		     "channel %d, hcchar 0x%08x, hctsiz 0x%08x, "
++		     "hcint 0x%08x, hcintmsk 0x%08x, "
++		     "hcsplt 0x%08x, qtd->complete_split %d\n", __func__,
++		     hc->hc_num, hcchar.d32, hctsiz.d32, hcint.d32,
++		     hcintmsk.d32, hcsplt.d32, qtd->complete_split);
++
++		DWC_WARN("%s: no halt status, channel %d, ignoring interrupt\n",
++			 __func__, hc->hc_num);
++		DWC_WARN("\n");
++		clear_hc_int(hc_regs, chhltd);
++		return 0;
++	}
++
++	/*
++	 * This code is here only as a check. hcchar.chdis should
++	 * never be set when the halt interrupt occurs. Halt the
++	 * channel again if it does occur.
++	 */
++	hcchar.d32 = DWC_READ_REG32(&hc_regs->hcchar);
++	if (hcchar.b.chdis) {
++		DWC_WARN("%s: hcchar.chdis set unexpectedly, "
++			 "hcchar 0x%08x, trying to halt again\n",
++			 __func__, hcchar.d32);
++		clear_hc_int(hc_regs, chhltd);
++		hc->halt_pending = 0;
++		halt_channel(hcd, hc, qtd, hc->halt_status);
++		return 0;
++	}
++
++	return 1;
++}
++#endif
++
++/**
++ * Handles a host Channel Halted interrupt in DMA mode. This handler
++ * determines the reason the channel halted and proceeds accordingly.
++ */
++static void handle_hc_chhltd_intr_dma(dwc_otg_hcd_t * hcd,
++				      dwc_hc_t * hc,
++				      dwc_otg_hc_regs_t * hc_regs,
++				      dwc_otg_qtd_t * qtd)
++{
++	int out_nak_enh = 0;
++	hcint_data_t hcint;
++	hcintmsk_data_t hcintmsk;
++	/* For core with OUT NAK enhancement, the flow for high-
++	 * speed CONTROL/BULK OUT is handled a little differently.
++	 */
++	if (hcd->core_if->snpsid >= OTG_CORE_REV_2_71a) {
++		if (hc->speed == DWC_OTG_EP_SPEED_HIGH && !hc->ep_is_in &&
++		    (hc->ep_type == DWC_OTG_EP_TYPE_CONTROL ||
++		     hc->ep_type == DWC_OTG_EP_TYPE_BULK)) {
++			out_nak_enh = 1;
++		}
++	}
++
++	if (hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE ||
++	    (hc->halt_status == DWC_OTG_HC_XFER_AHB_ERR
++	     && !hcd->core_if->dma_desc_enable)) {
++		/*
++		 * Just release the channel. A dequeue can happen on a
++		 * transfer timeout. In the case of an AHB Error, the channel
++		 * was forced to halt because there's no way to gracefully
++		 * recover.
++		 */
++		if (hcd->core_if->dma_desc_enable)
++			dwc_otg_hcd_complete_xfer_ddma(hcd, hc, hc_regs,
++						       hc->halt_status);
++		else
++			release_channel(hcd, hc, qtd, hc->halt_status);
++		return;
++	}
++
++	/* Read the HCINTn register to determine the cause for the halt. */
++
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++	hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
++
++	if (hcint.b.xfercomp) {
++		/** @todo This is here because of a possible hardware bug.  Spec
++		 * says that on SPLIT-ISOC OUT transfers in DMA mode that a HALT
++		 * interrupt w/ACK bit set should occur, but I only see the
++		 * XFERCOMP bit, even with it masked out.  This is a workaround
++		 * for that behavior.  Should fix this when hardware is fixed.
++		 */
++		if (hc->ep_type == DWC_OTG_EP_TYPE_ISOC && !hc->ep_is_in) {
++			handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
++		}
++		handle_hc_xfercomp_intr(hcd, hc, hc_regs, qtd);
++	} else if (hcint.b.stall) {
++		handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
++	} else if (hcint.b.xacterr && !hcd->core_if->dma_desc_enable) {
++		if (out_nak_enh) {
++			if (hcint.b.nyet || hcint.b.nak || hcint.b.ack) {
++				DWC_DEBUGPL(DBG_HCD, "XactErr with NYET/NAK/ACK\n");
++				qtd->error_count = 0;
++			} else {
++				DWC_DEBUGPL(DBG_HCD, "XactErr without NYET/NAK/ACK\n");
++			}
++		}
++
++		/*
++		 * Must handle xacterr before nak or ack. Could get a xacterr
++		 * at the same time as either of these on a BULK/CONTROL OUT
++		 * that started with a PING. The xacterr takes precedence.
++		 */
++		handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
++	} else if (hcint.b.xcs_xact && hcd->core_if->dma_desc_enable) {
++		handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
++	} else if (hcint.b.ahberr && hcd->core_if->dma_desc_enable) {
++		handle_hc_ahberr_intr(hcd, hc, hc_regs, qtd);
++	} else if (hcint.b.bblerr) {
++		handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
++	} else if (hcint.b.frmovrun) {
++		handle_hc_frmovrun_intr(hcd, hc, hc_regs, qtd);
++	} else if (hcint.b.datatglerr) {
++		handle_hc_datatglerr_intr(hcd, hc, hc_regs, qtd);
++	} else if (!out_nak_enh) {
++		if (hcint.b.nyet) {
++			/*
++			 * Must handle nyet before nak or ack. Could get a nyet at the
++			 * same time as either of those on a BULK/CONTROL OUT that
++			 * started with a PING. The nyet takes precedence.
++			 */
++			handle_hc_nyet_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.nak && !hcintmsk.b.nak) {
++			/*
++			 * If nak is not masked, it's because a non-split IN transfer
++			 * is in an error state. In that case, the nak is handled by
++			 * the nak interrupt handler, not here. Handle nak here for
++			 * BULK/CONTROL OUT transfers, which halt on a NAK to allow
++			 * rewinding the buffer pointer.
++			 */
++			handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.ack && !hcintmsk.b.ack) {
++			/*
++			 * If ack is not masked, it's because a non-split IN transfer
++			 * is in an error state. In that case, the ack is handled by
++			 * the ack interrupt handler, not here. Handle ack here for
++			 * split transfers. Start splits halt on ACK.
++			 */
++			handle_hc_ack_intr(hcd, hc, hc_regs, qtd);
++		} else {
++			if (hc->ep_type == DWC_OTG_EP_TYPE_INTR ||
++			    hc->ep_type == DWC_OTG_EP_TYPE_ISOC) {
++				/*
++				 * A periodic transfer halted with no other channel
++				 * interrupts set. Assume it was halted by the core
++				 * because it could not be completed in its scheduled
++				 * (micro)frame.
++				 */
++#ifdef DEBUG
++				DWC_PRINTF
++				    ("%s: Halt channel %d (assume incomplete periodic transfer)\n",
++				     __func__, hc->hc_num);
++#endif
++				halt_channel(hcd, hc, qtd,
++					     DWC_OTG_HC_XFER_PERIODIC_INCOMPLETE);
++			} else {
++				DWC_ERROR
++				    ("%s: Channel %d, DMA Mode -- ChHltd set, but reason "
++				     "for halting is unknown, hcint 0x%08x, intsts 0x%08x\n",
++				     __func__, hc->hc_num, hcint.d32,
++				     DWC_READ_REG32(&hcd->
++						    core_if->core_global_regs->
++						    gintsts));
++				/* Failthrough: use 3-strikes rule */
++				qtd->error_count++;
++				dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++				update_urb_state_xfer_intr(hc, hc_regs,
++					   qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++				halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++			}
++
++		}
++	} else {
++		DWC_PRINTF("NYET/NAK/ACK/other in non-error case, 0x%08x\n",
++			   hcint.d32);
++		/* Failthrough: use 3-strikes rule */
++		qtd->error_count++;
++		dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++		update_urb_state_xfer_intr(hc, hc_regs,
++			   qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++		halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR);
++	}
++}
++
++/**
++ * Handles a host channel Channel Halted interrupt.
++ *
++ * In slave mode, this handler is called only when the driver specifically
++ * requests a halt. This occurs during handling other host channel interrupts
++ * (e.g. nak, xacterr, stall, nyet, etc.).
++ *
++ * In DMA mode, this is the interrupt that occurs when the core has finished
++ * processing a transfer on a channel. Other host channel interrupts (except
++ * ahberr) are disabled in DMA mode.
++ */
++static int32_t handle_hc_chhltd_intr(dwc_otg_hcd_t * hcd,
++				     dwc_hc_t * hc,
++				     dwc_otg_hc_regs_t * hc_regs,
++				     dwc_otg_qtd_t * qtd)
++{
++	DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: "
++		    "Channel Halted--\n", hc->hc_num);
++
++	if (hcd->core_if->dma_enable) {
++		handle_hc_chhltd_intr_dma(hcd, hc, hc_regs, qtd);
++	} else {
++#ifdef DEBUG
++		if (!halt_status_ok(hcd, hc, hc_regs, qtd)) {
++			return 1;
++		}
++#endif
++		release_channel(hcd, hc, qtd, hc->halt_status);
++	}
++
++	return 1;
++}
++
++
++/**
++ * dwc_otg_fiq_unmangle_isoc() - Update the iso_frame_desc structure on
++ * FIQ transfer completion
++ * @hcd:	Pointer to dwc_otg_hcd struct
++ * @num:	Host channel number
++ *
++ * 1. Un-mangle the status as recorded in each iso_frame_desc status
++ * 2. Copy it from the dwc_otg_urb into the real URB
++ */
++void dwc_otg_fiq_unmangle_isoc(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, dwc_otg_qtd_t *qtd, uint32_t num)
++{
++	struct dwc_otg_hcd_urb *dwc_urb = qtd->urb;
++	int nr_frames = dwc_urb->packet_count;
++	int i;
++	hcint_data_t frame_hcint;
++
++	for (i = 0; i < nr_frames; i++) {
++		frame_hcint.d32 = dwc_urb->iso_descs[i].status;
++		if (frame_hcint.b.xfercomp) {
++			dwc_urb->iso_descs[i].status = 0;
++			dwc_urb->actual_length += dwc_urb->iso_descs[i].actual_length;
++		} else if (frame_hcint.b.frmovrun) {
++			if (qh->ep_is_in)
++				dwc_urb->iso_descs[i].status = -DWC_E_NO_STREAM_RES;
++			else
++				dwc_urb->iso_descs[i].status = -DWC_E_COMMUNICATION;
++			dwc_urb->error_count++;
++			dwc_urb->iso_descs[i].actual_length = 0;
++		} else if (frame_hcint.b.xacterr) {
++			dwc_urb->iso_descs[i].status = -DWC_E_PROTOCOL;
++			dwc_urb->error_count++;
++			dwc_urb->iso_descs[i].actual_length = 0;
++		} else if (frame_hcint.b.bblerr) {
++			dwc_urb->iso_descs[i].status = -DWC_E_OVERFLOW;
++			dwc_urb->error_count++;
++			dwc_urb->iso_descs[i].actual_length = 0;
++		} else {
++			/* Something went wrong */
++			dwc_urb->iso_descs[i].status = -1;
++			dwc_urb->iso_descs[i].actual_length = 0;
++			dwc_urb->error_count++;
++		}
++	}
++	qh->sched_frame = dwc_frame_num_inc(qh->sched_frame, qh->interval * (nr_frames - 1));
++
++	//printk_ratelimited(KERN_INFO "%s: HS isochronous of %d/%d frames with %d errors complete\n",
++	//			__FUNCTION__, i, dwc_urb->packet_count, dwc_urb->error_count);
++}
++
++/**
++ * dwc_otg_fiq_unsetup_per_dma() - Remove data from bounce buffers for split transactions
++ * @hcd:	Pointer to dwc_otg_hcd struct
++ * @num:	Host channel number
++ *
++ * Copies data from the FIQ bounce buffers into the URB's transfer buffer. Does not modify URB state.
++ * Returns total length of data or -1 if the buffers were not used.
++ *
++ */
++int dwc_otg_fiq_unsetup_per_dma(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh, dwc_otg_qtd_t *qtd, uint32_t num)
++{
++	dwc_hc_t *hc = qh->channel;
++	struct fiq_dma_blob *blob = hcd->fiq_dmab;
++	struct fiq_channel_state *st = &hcd->fiq_state->channel[num];
++	uint8_t *ptr = NULL;
++	int index = 0, len = 0;
++	int i = 0;
++	if (hc->ep_is_in) {
++		/* Copy data out of the DMA bounce buffers to the URB's buffer.
++		 * The align_buf is ignored as this is ignored on FSM enqueue. */
++		ptr = qtd->urb->buf;
++		if (qh->ep_type == UE_ISOCHRONOUS) {
++			/* Isoc IN transactions - grab the offset of the iso_frame_desc into the URB transfer buffer */
++			index = qtd->isoc_frame_index;
++			ptr += qtd->urb->iso_descs[index].offset;
++		} else {
++			/* Need to increment by actual_length for interrupt IN */
++			ptr += qtd->urb->actual_length;
++		}
++
++		for (i = 0; i < st->dma_info.index; i++) {
++			len += st->dma_info.slot_len[i];
++			dwc_memcpy(ptr, &blob->channel[num].index[i].buf[0], st->dma_info.slot_len[i]);
++			ptr += st->dma_info.slot_len[i];
++		}
++		return len;
++	} else {
++		/* OUT endpoints - nothing to do. */
++		return -1;
++	}
++
++}
++/**
++ * dwc_otg_hcd_handle_hc_fsm() - handle an unmasked channel interrupt
++ * 				 from a channel handled in the FIQ
++ * @hcd:	Pointer to dwc_otg_hcd struct
++ * @num:	Host channel number
++ *
++ * If a host channel interrupt was received by the IRQ and this was a channel
++ * used by the FIQ, the execution flow for transfer completion is substantially
++ * different from the normal (messy) path. This function and its friends handles
++ * channel cleanup and transaction completion from a FIQ transaction.
++ */
++void dwc_otg_hcd_handle_hc_fsm(dwc_otg_hcd_t *hcd, uint32_t num)
++{
++	struct fiq_channel_state *st = &hcd->fiq_state->channel[num];
++	dwc_hc_t *hc = hcd->hc_ptr_array[num];
++	dwc_otg_qtd_t *qtd;
++	dwc_otg_hc_regs_t *hc_regs = hcd->core_if->host_if->hc_regs[num];
++	hcint_data_t hcint = hcd->fiq_state->channel[num].hcint_copy;
++	hctsiz_data_t hctsiz = hcd->fiq_state->channel[num].hctsiz_copy;
++	int hostchannels  = 0;
++	fiq_print(FIQDBG_INT, hcd->fiq_state, "OUT %01d %01d ", num , st->fsm);
++
++	hostchannels = hcd->available_host_channels;
++	if (hc->halt_pending) {
++		/* Dequeue: The FIQ was allowed to complete the transfer but state has been cleared. */
++		if (hc->qh && st->fsm == FIQ_NP_SPLIT_DONE &&
++				hcint.b.xfercomp && hc->qh->ep_type == UE_BULK) {
++			if (hctsiz.b.pid == DWC_HCTSIZ_DATA0) {
++				hc->qh->data_toggle = DWC_OTG_HC_PID_DATA1;
++			} else {
++				hc->qh->data_toggle = DWC_OTG_HC_PID_DATA0;
++			}
++		}
++		release_channel(hcd, hc, NULL, hc->halt_status);
++		return;
++	}
++
++	qtd = DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list);
++	switch (st->fsm) {
++	case FIQ_TEST:
++		break;
++
++	case FIQ_DEQUEUE_ISSUED:
++		/* Handled above, but keep for posterity */
++		release_channel(hcd, hc, NULL, hc->halt_status);
++		break;
++
++	case FIQ_NP_SPLIT_DONE:
++		/* Nonperiodic transaction complete. */
++		if (!hc->ep_is_in) {
++			qtd->ssplit_out_xfer_count = hc->xfer_len;
++		}
++		if (hcint.b.xfercomp) {
++			handle_hc_xfercomp_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.nak) {
++			handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
++		} else {
++			DWC_WARN("Unexpected IRQ state on FSM transaction:"
++					"dev_addr=%d ep=%d fsm=%d, hcint=0x%08x\n",
++				hc->dev_addr, hc->ep_num, st->fsm, hcint.d32);
++			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++		}
++		break;
++
++	case FIQ_NP_SPLIT_HS_ABORTED:
++		/* A HS abort is a 3-strikes on the HS bus at any point in the transaction.
++		 * Normally a CLEAR_TT_BUFFER hub command would be required: we can't do that
++		 * because there's no guarantee which order a non-periodic split happened in.
++		 * We could end up clearing a perfectly good transaction out of the buffer.
++		 */
++		if (hcint.b.xacterr) {
++			qtd->error_count += st->nr_errors;
++			handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.ahberr) {
++			handle_hc_ahberr_intr(hcd, hc, hc_regs, qtd);
++		} else {
++			DWC_WARN("Unexpected IRQ state on FSM transaction:"
++					"dev_addr=%d ep=%d fsm=%d, hcint=0x%08x\n",
++				hc->dev_addr, hc->ep_num, st->fsm, hcint.d32);
++			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++		}
++		break;
++
++	case FIQ_NP_SPLIT_LS_ABORTED:
++		/* A few cases can cause this - either an unknown state on a SSPLIT or
++		 * STALL/data toggle error response on a CSPLIT */
++		if (hcint.b.stall) {
++			handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.datatglerr) {
++			handle_hc_datatglerr_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.bblerr) {
++			handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.ahberr) {
++			handle_hc_ahberr_intr(hcd, hc, hc_regs, qtd);
++		} else {
++			DWC_WARN("Unexpected IRQ state on FSM transaction:"
++					"dev_addr=%d ep=%d fsm=%d, hcint=0x%08x\n",
++				hc->dev_addr, hc->ep_num, st->fsm, hcint.d32);
++			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++		}
++		break;
++
++	case FIQ_PER_SPLIT_DONE:
++		/* Isoc IN or Interrupt IN/OUT */
++
++		/* Flow control here is different from the normal execution by the driver.
++		* We need to completely ignore most of the driver's method of handling
++		* split transactions and do it ourselves.
++		*/
++		if (hc->ep_type == UE_INTERRUPT) {
++			if (hcint.b.nak) {
++					handle_hc_nak_intr(hcd, hc, hc_regs, qtd);
++			} else if (hc->ep_is_in) {
++				int len;
++				len = dwc_otg_fiq_unsetup_per_dma(hcd, hc->qh, qtd, num);
++				//printk(KERN_NOTICE "FIQ Transaction: hc=%d len=%d urb_len = %d\n", num, len, qtd->urb->length);
++				qtd->urb->actual_length += len;
++				if (qtd->urb->actual_length >= qtd->urb->length) {
++					qtd->urb->status = 0;
++					hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, qtd->urb->status);
++					release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++				} else {
++					/* Interrupt transfer not complete yet - is it a short read? */
++					if (len < hc->max_packet) {
++						/* Interrupt transaction complete */
++						qtd->urb->status = 0;
++						hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, qtd->urb->status);
++						release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++					} else {
++						/* Further transactions required */
++						release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
++					}
++				}
++			} else {
++				/* Interrupt OUT complete. */
++				dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd);
++				qtd->urb->actual_length += hc->xfer_len;
++				if (qtd->urb->actual_length >= qtd->urb->length) {
++					qtd->urb->status = 0;
++					hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, qtd->urb->status);
++					release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++				} else {
++					release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
++				}
++			}
++		} else {
++			/* ISOC IN complete. */
++			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
++			int len = 0;
++			/* Record errors, update qtd. */
++			if (st->nr_errors) {
++				frame_desc->actual_length = 0;
++				frame_desc->status = -DWC_E_PROTOCOL;
++			} else {
++				frame_desc->status = 0;
++				/* Unswizzle dma */
++				len = dwc_otg_fiq_unsetup_per_dma(hcd, hc->qh, qtd, num);
++				frame_desc->actual_length = len;
++			}
++			qtd->isoc_frame_index++;
++			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
++				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++			} else {
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
++			}
++		}
++		break;
++
++	case FIQ_PER_ISO_OUT_DONE: {
++			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
++			/* Record errors, update qtd. */
++			if (st->nr_errors) {
++				frame_desc->actual_length = 0;
++				frame_desc->status = -DWC_E_PROTOCOL;
++			} else {
++				frame_desc->status = 0;
++				frame_desc->actual_length = frame_desc->length;
++			}
++			qtd->isoc_frame_index++;
++			qtd->isoc_split_offset = 0;
++			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
++				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++			} else {
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
++			}
++		}
++		break;
++
++	case FIQ_PER_SPLIT_NYET_ABORTED:
++		/* Doh. lost the data. */
++		printk_ratelimited(KERN_INFO "Transfer to device %d endpoint 0x%x frame %d failed "
++				"- FIQ reported NYET. Data may have been lost.\n",
++				hc->dev_addr, hc->ep_num, dwc_otg_hcd_get_frame_number(hcd) >> 3);
++		if (hc->ep_type == UE_ISOCHRONOUS) {
++			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
++			/* Record errors, update qtd. */
++			frame_desc->actual_length = 0;
++			frame_desc->status = -DWC_E_PROTOCOL;
++			qtd->isoc_frame_index++;
++			qtd->isoc_split_offset = 0;
++			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
++				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++			} else {
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
++			}
++		} else {
++			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++		}
++		break;
++
++	case FIQ_HS_ISOC_DONE:
++		/* The FIQ has performed a whole pile of isochronous transactions.
++		 * The status is recorded as the interrupt state should the transaction
++		 * fail.
++		 */
++		dwc_otg_fiq_unmangle_isoc(hcd, hc->qh, qtd, num);
++		hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++		break;
++
++	case FIQ_PER_SPLIT_LS_ABORTED:
++		if (hcint.b.xacterr) {
++			/* Hub has responded with an ERR packet. Device
++			 * has been unplugged or the port has been disabled.
++			 * TODO: need to issue a reset to the hub port. */
++			qtd->error_count += 3;
++			handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.stall) {
++			handle_hc_stall_intr(hcd, hc, hc_regs, qtd);
++		} else if (hcint.b.bblerr) {
++			handle_hc_babble_intr(hcd, hc, hc_regs, qtd);
++		} else {
++			printk_ratelimited(KERN_INFO "Transfer to device %d endpoint 0x%x failed "
++				"- FIQ reported FSM=%d. Data may have been lost.\n",
++				st->fsm, hc->dev_addr, hc->ep_num);
++			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++		}
++		break;
++
++	case FIQ_PER_SPLIT_HS_ABORTED:
++		/* Either the SSPLIT phase suffered transaction errors or something
++		 * unexpected happened.
++		 */
++		qtd->error_count += 3;
++		handle_hc_xacterr_intr(hcd, hc, hc_regs, qtd);
++		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++		break;
++
++	case FIQ_PER_SPLIT_TIMEOUT:
++		/* Couldn't complete in the nominated frame */
++		printk(KERN_INFO "Transfer to device %d endpoint 0x%x frame %d failed "
++				"- FIQ timed out. Data may have been lost.\n",
++				hc->dev_addr, hc->ep_num, dwc_otg_hcd_get_frame_number(hcd) >> 3);
++		if (hc->ep_type == UE_ISOCHRONOUS) {
++			struct dwc_otg_hcd_iso_packet_desc *frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index];
++			/* Record errors, update qtd. */
++			frame_desc->actual_length = 0;
++			if (hc->ep_is_in) {
++				frame_desc->status = -DWC_E_NO_STREAM_RES;
++			} else {
++				frame_desc->status = -DWC_E_COMMUNICATION;
++			}
++			qtd->isoc_frame_index++;
++			if (qtd->isoc_frame_index == qtd->urb->packet_count) {
++				hcd->fops->complete(hcd, qtd->urb->priv, qtd->urb, 0);
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_URB_COMPLETE);
++			} else {
++				release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_COMPLETE);
++			}
++		} else {
++			release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++		}
++		break;
++
++	default:
++		DWC_WARN("Unexpected state received on hc=%d fsm=%d on transfer to device %d ep 0x%x", 
++					hc->hc_num, st->fsm, hc->dev_addr, hc->ep_num);
++		qtd->error_count++;
++		release_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_NO_HALT_STATUS);
++	}
++	return;
++}
++
++/** Handles interrupt for a specific Host Channel */
++int32_t dwc_otg_hcd_handle_hc_n_intr(dwc_otg_hcd_t * dwc_otg_hcd, uint32_t num)
++{
++	int retval = 0;
++	hcint_data_t hcint;
++	hcintmsk_data_t hcintmsk;
++	dwc_hc_t *hc;
++	dwc_otg_hc_regs_t *hc_regs;
++	dwc_otg_qtd_t *qtd;
++
++	DWC_DEBUGPL(DBG_HCDV, "--Host Channel Interrupt--, Channel %d\n", num);
++
++	hc = dwc_otg_hcd->hc_ptr_array[num];
++	hc_regs = dwc_otg_hcd->core_if->host_if->hc_regs[num];
++	if(hc->halt_status == DWC_OTG_HC_XFER_URB_DEQUEUE) {
++		/* A dequeue was issued for this transfer. Our QTD has gone away
++		 * but in the case of a FIQ transfer, the transfer would have run
++		 * to completion.
++		 */
++		if (fiq_fsm_enable && dwc_otg_hcd->fiq_state->channel[num].fsm != FIQ_PASSTHROUGH) {
++			dwc_otg_hcd_handle_hc_fsm(dwc_otg_hcd, num);
++		} else {
++			release_channel(dwc_otg_hcd, hc, NULL, hc->halt_status);
++		}
++		return 1;
++	}
++	qtd = DWC_CIRCLEQ_FIRST(&hc->qh->qtd_list);
++
++	/*
++	 * FSM mode: Check to see if this is a HC interrupt from a channel handled by the FIQ.
++	 * Execution path is fundamentally different for the channels after a FIQ has completed
++	 * a split transaction.
++	 */
++	if (fiq_fsm_enable) {
++		switch (dwc_otg_hcd->fiq_state->channel[num].fsm) {
++			case FIQ_PASSTHROUGH:
++				break;
++			case FIQ_PASSTHROUGH_ERRORSTATE:
++				/* Hook into the error count */
++				fiq_print(FIQDBG_ERR, dwc_otg_hcd->fiq_state, "HCDERR%02d", num);
++				if (!dwc_otg_hcd->fiq_state->channel[num].nr_errors) {
++					qtd->error_count = 0;
++					fiq_print(FIQDBG_ERR, dwc_otg_hcd->fiq_state, "RESET   ");
++				}
++				break;
++			default:
++				dwc_otg_hcd_handle_hc_fsm(dwc_otg_hcd, num);
++				return 1;
++		}
++	}
++
++	hcint.d32 = DWC_READ_REG32(&hc_regs->hcint);
++	hcintmsk.d32 = DWC_READ_REG32(&hc_regs->hcintmsk);
++	hcint.d32 = hcint.d32 & hcintmsk.d32;
++	if (!dwc_otg_hcd->core_if->dma_enable) {
++		if (hcint.b.chhltd && hcint.d32 != 0x2) {
++			hcint.b.chhltd = 0;
++		}
++	}
++
++	if (hcint.b.xfercomp) {
++		retval |=
++		    handle_hc_xfercomp_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++		/*
++		 * If NYET occurred at same time as Xfer Complete, the NYET is
++		 * handled by the Xfer Complete interrupt handler. Don't want
++		 * to call the NYET interrupt handler in this case.
++		 */
++		hcint.b.nyet = 0;
++	}
++	if (hcint.b.chhltd) {
++		retval |= handle_hc_chhltd_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.ahberr) {
++		retval |= handle_hc_ahberr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.stall) {
++		retval |= handle_hc_stall_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.nak) {
++		retval |= handle_hc_nak_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.ack) {
++		if(!hcint.b.chhltd)
++			retval |= handle_hc_ack_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.nyet) {
++		retval |= handle_hc_nyet_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.xacterr) {
++		retval |= handle_hc_xacterr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.bblerr) {
++		retval |= handle_hc_babble_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.frmovrun) {
++		retval |=
++		    handle_hc_frmovrun_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++	if (hcint.b.datatglerr) {
++		retval |=
++		    handle_hc_datatglerr_intr(dwc_otg_hcd, hc, hc_regs, qtd);
++	}
++
++	return retval;
++}
++#endif /* DWC_DEVICE_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
+@@ -0,0 +1,1086 @@
++
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_linux.c $
++ * $Revision: #20 $
++ * $Date: 2011/10/26 $
++ * $Change: 1872981 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_DEVICE_ONLY
++
++/**
++ * @file
++ *
++ * This file contains the implementation of the HCD. In Linux, the HCD
++ * implements the hc_driver API.
++ */
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/init.h>
++#include <linux/device.h>
++#include <linux/errno.h>
++#include <linux/list.h>
++#include <linux/interrupt.h>
++#include <linux/string.h>
++#include <linux/dma-mapping.h>
++#include <linux/version.h>
++#include <asm/io.h>
++#ifdef CONFIG_ARM
++#include <asm/fiq.h>
++#endif
++#include <linux/usb.h>
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35)
++#include <../drivers/usb/core/hcd.h>
++#else
++#include <linux/usb/hcd.h>
++#endif
++#include <asm/bug.h>
++
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30))
++#define USB_URB_EP_LINKING 1
++#else
++#define USB_URB_EP_LINKING 0
++#endif
++
++#include "dwc_otg_hcd_if.h"
++#include "dwc_otg_dbg.h"
++#include "dwc_otg_driver.h"
++#include "dwc_otg_hcd.h"
++
++#ifndef __virt_to_bus
++#define __virt_to_bus	__virt_to_phys
++#define __bus_to_virt	__phys_to_virt
++#define __pfn_to_bus(x)	__pfn_to_phys(x)
++#define __bus_to_pfn(x)	__phys_to_pfn(x)
++#endif
++
++extern unsigned char  _dwc_otg_fiq_stub, _dwc_otg_fiq_stub_end;
++
++/**
++ * Gets the endpoint number from a _bEndpointAddress argument. The endpoint is
++ * qualified with its direction (possible 32 endpoints per device).
++ */
++#define dwc_ep_addr_to_endpoint(_bEndpointAddress_) ((_bEndpointAddress_ & USB_ENDPOINT_NUMBER_MASK) | \
++						     ((_bEndpointAddress_ & USB_DIR_IN) != 0) << 4)
++
++static const char dwc_otg_hcd_name[] = "dwc_otg_hcd";
++
++extern bool fiq_enable;
++
++/** @name Linux HC Driver API Functions */
++/** @{ */
++/* manage i/o requests, device state */
++static int dwc_otg_urb_enqueue(struct usb_hcd *hcd,
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++		       struct usb_host_endpoint *ep,
++#endif
++		       struct urb *urb, gfp_t mem_flags);
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb);
++#endif
++#else /* kernels at or post 2.6.30 */
++static int dwc_otg_urb_dequeue(struct usb_hcd *hcd,
++                               struct urb *urb, int status);
++#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30) */
++
++static void endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
++static void endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
++#endif
++static irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd);
++extern int hcd_start(struct usb_hcd *hcd);
++extern void hcd_stop(struct usb_hcd *hcd);
++static int get_frame_number(struct usb_hcd *hcd);
++extern int hub_status_data(struct usb_hcd *hcd, char *buf);
++extern int hub_control(struct usb_hcd *hcd,
++		       u16 typeReq,
++		       u16 wValue, u16 wIndex, char *buf, u16 wLength);
++
++struct wrapper_priv_data {
++	dwc_otg_hcd_t *dwc_otg_hcd;
++};
++
++/** @} */
++
++static struct hc_driver dwc_otg_hc_driver = {
++
++	.description = dwc_otg_hcd_name,
++	.product_desc = "DWC OTG Controller",
++	.hcd_priv_size = sizeof(struct wrapper_priv_data),
++
++	.irq = dwc_otg_hcd_irq,
++
++	.flags = HCD_MEMORY | HCD_DMA | HCD_USB2,
++
++	//.reset =
++	.start = hcd_start,
++	//.suspend =
++	//.resume =
++	.stop = hcd_stop,
++
++	.urb_enqueue = dwc_otg_urb_enqueue,
++	.urb_dequeue = dwc_otg_urb_dequeue,
++	.endpoint_disable = endpoint_disable,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
++	.endpoint_reset = endpoint_reset,
++#endif
++	.get_frame_number = get_frame_number,
++
++	.hub_status_data = hub_status_data,
++	.hub_control = hub_control,
++	//.bus_suspend =
++	//.bus_resume =
++};
++
++/** Gets the dwc_otg_hcd from a struct usb_hcd */
++static inline dwc_otg_hcd_t *hcd_to_dwc_otg_hcd(struct usb_hcd *hcd)
++{
++	struct wrapper_priv_data *p;
++	p = (struct wrapper_priv_data *)(hcd->hcd_priv);
++	return p->dwc_otg_hcd;
++}
++
++/** Gets the struct usb_hcd that contains a dwc_otg_hcd_t. */
++static inline struct usb_hcd *dwc_otg_hcd_to_hcd(dwc_otg_hcd_t * dwc_otg_hcd)
++{
++	return dwc_otg_hcd_get_priv_data(dwc_otg_hcd);
++}
++
++/** Gets the usb_host_endpoint associated with an URB. */
++inline struct usb_host_endpoint *dwc_urb_to_endpoint(struct urb *urb)
++{
++	struct usb_device *dev = urb->dev;
++	int ep_num = usb_pipeendpoint(urb->pipe);
++
++	if (usb_pipein(urb->pipe))
++		return dev->ep_in[ep_num];
++	else
++		return dev->ep_out[ep_num];
++}
++
++static int _disconnect(dwc_otg_hcd_t * hcd)
++{
++	struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
++
++	usb_hcd->self.is_b_host = 0;
++	return 0;
++}
++
++static int _start(dwc_otg_hcd_t * hcd)
++{
++	struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
++
++	usb_hcd->self.is_b_host = dwc_otg_hcd_is_b_host(hcd);
++	hcd_start(usb_hcd);
++
++	return 0;
++}
++
++static int _hub_info(dwc_otg_hcd_t * hcd, void *urb_handle, uint32_t * hub_addr,
++		     uint32_t * port_addr)
++{
++   struct urb *urb = (struct urb *)urb_handle;
++   struct usb_bus *bus;
++#if 1 //GRAYG - temporary
++   if (NULL == urb_handle)
++      DWC_ERROR("**** %s - NULL URB handle\n", __func__);//GRAYG
++   if (NULL == urb->dev)
++      DWC_ERROR("**** %s - URB has no device\n", __func__);//GRAYG
++   if (NULL == port_addr)
++      DWC_ERROR("**** %s - NULL port_address\n", __func__);//GRAYG
++#endif
++   if (urb->dev->tt) {
++        if (NULL == urb->dev->tt->hub) {
++                DWC_ERROR("**** %s - (URB's transactor has no TT - giving no hub)\n",
++                           __func__); //GRAYG
++                //*hub_addr = (u8)usb_pipedevice(urb->pipe); //GRAYG
++                *hub_addr = 0; //GRAYG
++                // we probably shouldn't have a transaction translator if
++                // there's no associated hub?
++        } else {
++		bus = hcd_to_bus(dwc_otg_hcd_to_hcd(hcd));
++		if (urb->dev->tt->hub == bus->root_hub)
++			*hub_addr = 0;
++		else
++			*hub_addr = urb->dev->tt->hub->devnum;
++	}
++	*port_addr = urb->dev->ttport;
++   } else {
++        *hub_addr = 0;
++	*port_addr = urb->dev->ttport;
++   }
++   return 0;
++}
++
++static int _speed(dwc_otg_hcd_t * hcd, void *urb_handle)
++{
++	struct urb *urb = (struct urb *)urb_handle;
++	return urb->dev->speed;
++}
++
++static int _get_b_hnp_enable(dwc_otg_hcd_t * hcd)
++{
++	struct usb_hcd *usb_hcd = dwc_otg_hcd_to_hcd(hcd);
++	return usb_hcd->self.b_hnp_enable;
++}
++
++static void allocate_bus_bandwidth(struct usb_hcd *hcd, uint32_t bw,
++				   struct urb *urb)
++{
++	hcd_to_bus(hcd)->bandwidth_allocated += bw / urb->interval;
++	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
++		hcd_to_bus(hcd)->bandwidth_isoc_reqs++;
++	} else {
++		hcd_to_bus(hcd)->bandwidth_int_reqs++;
++	}
++}
++
++static void free_bus_bandwidth(struct usb_hcd *hcd, uint32_t bw,
++			       struct urb *urb)
++{
++	hcd_to_bus(hcd)->bandwidth_allocated -= bw / urb->interval;
++	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
++		hcd_to_bus(hcd)->bandwidth_isoc_reqs--;
++	} else {
++		hcd_to_bus(hcd)->bandwidth_int_reqs--;
++	}
++}
++
++/**
++ * Sets the final status of an URB and returns it to the device driver. Any
++ * required cleanup of the URB is performed.  The HCD lock should be held on
++ * entry.
++ */
++static int _complete(dwc_otg_hcd_t * hcd, void *urb_handle,
++		     dwc_otg_hcd_urb_t * dwc_otg_urb, int32_t status)
++{
++	struct urb *urb = (struct urb *)urb_handle;
++	urb_tq_entry_t *new_entry;
++	int rc = 0;
++	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
++		DWC_PRINTF("%s: urb %p, device %d, ep %d %s, status=%d\n",
++			   __func__, urb, usb_pipedevice(urb->pipe),
++			   usb_pipeendpoint(urb->pipe),
++			   usb_pipein(urb->pipe) ? "IN" : "OUT", status);
++		if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
++			int i;
++			for (i = 0; i < urb->number_of_packets; i++) {
++				DWC_PRINTF("  ISO Desc %d status: %d\n",
++					   i, urb->iso_frame_desc[i].status);
++			}
++		}
++	}
++	new_entry = DWC_ALLOC_ATOMIC(sizeof(urb_tq_entry_t));
++	urb->actual_length = dwc_otg_hcd_urb_get_actual_length(dwc_otg_urb);
++	/* Convert status value. */
++	switch (status) {
++	case -DWC_E_PROTOCOL:
++		status = -EPROTO;
++		break;
++	case -DWC_E_IN_PROGRESS:
++		status = -EINPROGRESS;
++		break;
++	case -DWC_E_PIPE:
++		status = -EPIPE;
++		break;
++	case -DWC_E_IO:
++		status = -EIO;
++		break;
++	case -DWC_E_TIMEOUT:
++		status = -ETIMEDOUT;
++		break;
++	case -DWC_E_OVERFLOW:
++		status = -EOVERFLOW;
++		break;
++	case -DWC_E_SHUTDOWN:
++		status = -ESHUTDOWN;
++		break;
++	default:
++		if (status) {
++			DWC_PRINTF("Uknown urb status %d\n", status);
++
++		}
++	}
++
++	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
++		int i;
++
++		urb->error_count = dwc_otg_hcd_urb_get_error_count(dwc_otg_urb);
++		urb->actual_length = 0;
++		for (i = 0; i < urb->number_of_packets; ++i) {
++			urb->iso_frame_desc[i].actual_length =
++			    dwc_otg_hcd_urb_get_iso_desc_actual_length
++			    (dwc_otg_urb, i);
++			urb->actual_length += urb->iso_frame_desc[i].actual_length;
++			urb->iso_frame_desc[i].status =
++			    dwc_otg_hcd_urb_get_iso_desc_status(dwc_otg_urb, i);
++		}
++	}
++
++	urb->status = status;
++	urb->hcpriv = NULL;
++	if (!status) {
++		if ((urb->transfer_flags & URB_SHORT_NOT_OK) &&
++		    (urb->actual_length < urb->transfer_buffer_length)) {
++			urb->status = -EREMOTEIO;
++		}
++	}
++
++	if ((usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) ||
++	    (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
++		struct usb_host_endpoint *ep = dwc_urb_to_endpoint(urb);
++		if (ep) {
++			free_bus_bandwidth(dwc_otg_hcd_to_hcd(hcd),
++					   dwc_otg_hcd_get_ep_bandwidth(hcd,
++									ep->hcpriv),
++					   urb);
++		}
++	}
++	DWC_FREE(dwc_otg_urb);
++	if (!new_entry) {
++		DWC_ERROR("dwc_otg_hcd: complete: cannot allocate URB TQ entry\n");
++		urb->status = -EPROTO;
++		/* don't schedule the tasklet -
++		 * directly return the packet here with error. */
++#if USB_URB_EP_LINKING
++		usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(hcd), urb);
++#endif
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++		usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb);
++#else
++		usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb, urb->status);
++#endif
++	} else {
++		new_entry->urb = urb;
++#if USB_URB_EP_LINKING
++		rc = usb_hcd_check_unlink_urb(dwc_otg_hcd_to_hcd(hcd), urb, urb->status);
++		if(0 == rc) {
++			usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(hcd), urb);
++		}
++#endif
++		if(0 == rc) {
++			DWC_TAILQ_INSERT_TAIL(&hcd->completed_urb_list, new_entry,
++						urb_tq_entries);
++			DWC_TASK_HI_SCHEDULE(hcd->completion_tasklet);
++		}
++	}
++	return 0;
++}
++
++static struct dwc_otg_hcd_function_ops hcd_fops = {
++	.start = _start,
++	.disconnect = _disconnect,
++	.hub_info = _hub_info,
++	.speed = _speed,
++	.complete = _complete,
++	.get_b_hnp_enable = _get_b_hnp_enable,
++};
++
++#ifdef CONFIG_ARM64
++
++static int simfiq_irq = -1;
++
++void local_fiq_enable(void)
++{
++	if (simfiq_irq >= 0)
++		enable_irq(simfiq_irq);
++}
++
++void local_fiq_disable(void)
++{
++	if (simfiq_irq >= 0)
++		disable_irq(simfiq_irq);
++}
++
++irqreturn_t fiq_irq_handler(int irq, void *dev_id)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = (dwc_otg_hcd_t *)dev_id;
++
++	if (fiq_fsm_enable)
++		dwc_otg_fiq_fsm(dwc_otg_hcd->fiq_state, dwc_otg_hcd->core_if->core_params->host_channels);
++	else
++		dwc_otg_fiq_nop(dwc_otg_hcd->fiq_state);
++
++	return IRQ_HANDLED;
++}
++
++#else
++static struct fiq_handler fh = {
++  .name = "usb_fiq",
++};
++
++#endif
++
++static void hcd_init_fiq(void *cookie)
++{
++	dwc_otg_device_t *otg_dev = cookie;
++	dwc_otg_hcd_t *dwc_otg_hcd = otg_dev->hcd;
++#ifdef CONFIG_ARM64
++	int retval = 0;
++	int irq;
++#else
++	struct pt_regs regs;
++	int irq;
++
++	if (claim_fiq(&fh)) {
++		DWC_ERROR("Can't claim FIQ");
++		BUG();
++	}
++	DWC_WARN("FIQ on core %d", smp_processor_id());
++	DWC_WARN("FIQ ASM at %px length %d", &_dwc_otg_fiq_stub, (int)(&_dwc_otg_fiq_stub_end - &_dwc_otg_fiq_stub));
++	set_fiq_handler((void *) &_dwc_otg_fiq_stub, &_dwc_otg_fiq_stub_end - &_dwc_otg_fiq_stub);
++	memset(&regs,0,sizeof(regs));
++
++	regs.ARM_r8 = (long) dwc_otg_hcd->fiq_state;
++	if (fiq_fsm_enable) {
++		regs.ARM_r9 = dwc_otg_hcd->core_if->core_params->host_channels;
++		//regs.ARM_r10 = dwc_otg_hcd->dma;
++		regs.ARM_fp = (long) dwc_otg_fiq_fsm;
++	} else {
++		regs.ARM_fp = (long) dwc_otg_fiq_nop;
++	}
++
++	regs.ARM_sp = (long) dwc_otg_hcd->fiq_stack + (sizeof(struct fiq_stack) - 4);
++
++//		__show_regs(&regs);
++	set_fiq_regs(&regs);
++#endif
++
++	dwc_otg_hcd->fiq_state->dwc_regs_base = otg_dev->os_dep.base;
++	//Set the mphi periph to the required registers
++	dwc_otg_hcd->fiq_state->mphi_regs.base    = otg_dev->os_dep.mphi_base;
++	if (otg_dev->os_dep.use_swirq) {
++		dwc_otg_hcd->fiq_state->mphi_regs.swirq_set =
++			otg_dev->os_dep.mphi_base + 0x1f0;
++		dwc_otg_hcd->fiq_state->mphi_regs.swirq_clr =
++			otg_dev->os_dep.mphi_base + 0x1f4;
++		DWC_WARN("Fake MPHI regs_base at 0x%08x",
++			 (int)dwc_otg_hcd->fiq_state->mphi_regs.base);
++	} else {
++		dwc_otg_hcd->fiq_state->mphi_regs.ctrl =
++			otg_dev->os_dep.mphi_base + 0x4c;
++		dwc_otg_hcd->fiq_state->mphi_regs.outdda
++			= otg_dev->os_dep.mphi_base + 0x28;
++		dwc_otg_hcd->fiq_state->mphi_regs.outddb
++			= otg_dev->os_dep.mphi_base + 0x2c;
++		dwc_otg_hcd->fiq_state->mphi_regs.intstat
++			= otg_dev->os_dep.mphi_base + 0x50;
++		DWC_WARN("MPHI regs_base at %px",
++			 dwc_otg_hcd->fiq_state->mphi_regs.base);
++
++		//Enable mphi peripheral
++		writel((1<<31),dwc_otg_hcd->fiq_state->mphi_regs.ctrl);
++#ifdef DEBUG
++		if (readl(dwc_otg_hcd->fiq_state->mphi_regs.ctrl) & 0x80000000)
++			DWC_WARN("MPHI periph has been enabled");
++		else
++			DWC_WARN("MPHI periph has NOT been enabled");
++#endif
++	}
++	// Enable FIQ interrupt from USB peripheral
++#ifdef CONFIG_ARM64
++	irq = otg_dev->os_dep.fiq_num;
++
++	if (irq < 0) {
++		DWC_ERROR("Can't get SIM-FIQ irq");
++		return;
++	}
++
++	retval = request_irq(irq, fiq_irq_handler, 0, "dwc_otg_sim-fiq", dwc_otg_hcd);
++
++	if (retval < 0) {
++		DWC_ERROR("Unable to request SIM-FIQ irq\n");
++		return;
++	}
++
++	simfiq_irq = irq;
++#else
++#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER
++	irq = otg_dev->os_dep.fiq_num;
++#else
++	irq = INTERRUPT_VC_USB;
++#endif
++	if (irq < 0) {
++		DWC_ERROR("Can't get FIQ irq");
++		return;
++	}
++	/*
++	 * We could take an interrupt immediately after enabling the FIQ.
++	 * Ensure coherency of hcd->fiq_state.
++	 */
++	smp_mb();
++	enable_fiq(irq);
++	local_fiq_enable();
++#endif
++
++}
++
++/**
++ * Initializes the HCD. This function allocates memory for and initializes the
++ * static parts of the usb_hcd and dwc_otg_hcd structures. It also registers the
++ * USB bus with the core and calls the hc_driver->start() function. It returns
++ * a negative error on failure.
++ */
++int hcd_init(dwc_bus_dev_t *_dev)
++{
++	struct usb_hcd *hcd = NULL;
++	dwc_otg_hcd_t *dwc_otg_hcd = NULL;
++	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
++	int retval = 0;
++        u64 dmamask;
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD INIT otg_dev=%p\n", otg_dev);
++
++	/* Set device flags indicating whether the HCD supports DMA. */
++	if (dwc_otg_is_dma_enable(otg_dev->core_if))
++                dmamask = DMA_BIT_MASK(32);
++        else
++                dmamask = 0;
++
++#if    defined(LM_INTERFACE) || defined(PLATFORM_INTERFACE)
++        dma_set_mask(&_dev->dev, dmamask);
++        dma_set_coherent_mask(&_dev->dev, dmamask);
++#elif  defined(PCI_INTERFACE)
++        pci_set_dma_mask(_dev, dmamask);
++        pci_set_consistent_dma_mask(_dev, dmamask);
++#endif
++
++	/*
++	 * Allocate memory for the base HCD plus the DWC OTG HCD.
++	 * Initialize the base HCD.
++	 */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
++	hcd = usb_create_hcd(&dwc_otg_hc_driver, &_dev->dev, _dev->dev.bus_id);
++#else
++	hcd = usb_create_hcd(&dwc_otg_hc_driver, &_dev->dev, dev_name(&_dev->dev));
++	hcd->has_tt = 1;
++//      hcd->uses_new_polling = 1;
++//      hcd->poll_rh = 0;
++#endif
++	if (!hcd) {
++		retval = -ENOMEM;
++		goto error1;
++	}
++
++	hcd->regs = otg_dev->os_dep.base;
++
++
++	/* Initialize the DWC OTG HCD. */
++	dwc_otg_hcd = dwc_otg_hcd_alloc_hcd();
++	if (!dwc_otg_hcd) {
++		goto error2;
++	}
++	((struct wrapper_priv_data *)(hcd->hcd_priv))->dwc_otg_hcd =
++	    dwc_otg_hcd;
++	otg_dev->hcd = dwc_otg_hcd;
++	otg_dev->hcd->otg_dev = otg_dev;
++
++#ifdef CONFIG_ARM64
++	if (dwc_otg_hcd_init(dwc_otg_hcd, otg_dev->core_if))
++		goto error2;
++
++	if (fiq_enable)
++		hcd_init_fiq(otg_dev);
++#else
++	if (dwc_otg_hcd_init(dwc_otg_hcd, otg_dev->core_if)) {
++		goto error2;
++	}
++
++	if (fiq_enable) {
++		if (num_online_cpus() > 1) {
++			/*
++			 * bcm2709: can run the FIQ on a separate core to IRQs.
++			 * Ensure driver state is visible to other cores before setting up the FIQ.
++			 */
++			smp_mb();
++			smp_call_function_single(1, hcd_init_fiq, otg_dev, 1);
++		} else {
++			smp_call_function_single(0, hcd_init_fiq, otg_dev, 1);
++		}
++	}
++#endif
++
++	hcd->self.otg_port = dwc_otg_hcd_otg_port(dwc_otg_hcd);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33) //don't support for LM(with 2.6.20.1 kernel)
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35) //version field absent later
++	hcd->self.otg_version = dwc_otg_get_otg_version(otg_dev->core_if);
++#endif
++	/* Don't support SG list at this point */
++	hcd->self.sg_tablesize = 0;
++#endif
++	/*
++	 * Finish generic HCD initialization and start the HCD. This function
++	 * allocates the DMA buffer pool, registers the USB bus, requests the
++	 * IRQ line, and calls hcd_start method.
++	 */
++	retval = usb_add_hcd(hcd, otg_dev->os_dep.irq_num, IRQF_SHARED);
++	if (retval < 0) {
++		goto error2;
++	}
++
++	dwc_otg_hcd_set_priv_data(dwc_otg_hcd, hcd);
++	return 0;
++
++error2:
++	usb_put_hcd(hcd);
++error1:
++	return retval;
++}
++
++/**
++ * Removes the HCD.
++ * Frees memory and resources associated with the HCD and deregisters the bus.
++ */
++void hcd_remove(dwc_bus_dev_t *_dev)
++{
++	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
++	dwc_otg_hcd_t *dwc_otg_hcd;
++	struct usb_hcd *hcd;
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD REMOVE otg_dev=%p\n", otg_dev);
++
++	if (!otg_dev) {
++		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev NULL!\n", __func__);
++		return;
++	}
++
++	dwc_otg_hcd = otg_dev->hcd;
++
++	if (!dwc_otg_hcd) {
++		DWC_DEBUGPL(DBG_ANY, "%s: otg_dev->hcd NULL!\n", __func__);
++		return;
++	}
++
++	hcd = dwc_otg_hcd_to_hcd(dwc_otg_hcd);
++
++	if (!hcd) {
++		DWC_DEBUGPL(DBG_ANY,
++			    "%s: dwc_otg_hcd_to_hcd(dwc_otg_hcd) NULL!\n",
++			    __func__);
++		return;
++	}
++	usb_remove_hcd(hcd);
++	dwc_otg_hcd_set_priv_data(dwc_otg_hcd, NULL);
++	dwc_otg_hcd_remove(dwc_otg_hcd);
++	usb_put_hcd(hcd);
++}
++
++/* =========================================================================
++ *  Linux HC Driver Functions
++ * ========================================================================= */
++
++/** Initializes the DWC_otg controller and its root hub and prepares it for host
++ * mode operation. Activates the root port. Returns 0 on success and a negative
++ * error code on failure. */
++int hcd_start(struct usb_hcd *hcd)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++	struct usb_bus *bus;
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD START\n");
++	bus = hcd_to_bus(hcd);
++
++	hcd->state = HC_STATE_RUNNING;
++	if (dwc_otg_hcd_start(dwc_otg_hcd, &hcd_fops)) {
++		return 0;
++	}
++
++	/* Initialize and connect root hub if one is not already attached */
++	if (bus->root_hub) {
++		DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD Has Root Hub\n");
++		/* Inform the HUB driver to resume. */
++		usb_hcd_resume_root_hub(hcd);
++	}
++
++	return 0;
++}
++
++/**
++ * Halts the DWC_otg host mode operations in a clean manner. USB transfers are
++ * stopped.
++ */
++void hcd_stop(struct usb_hcd *hcd)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++
++	dwc_otg_hcd_stop(dwc_otg_hcd);
++}
++
++/** Returns the current frame number. */
++static int get_frame_number(struct usb_hcd *hcd)
++{
++	hprt0_data_t hprt0;
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++	hprt0.d32 = DWC_READ_REG32(dwc_otg_hcd->core_if->host_if->hprt0);
++	if (hprt0.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED)
++		return dwc_otg_hcd_get_frame_number(dwc_otg_hcd) >> 3;
++	else
++		return dwc_otg_hcd_get_frame_number(dwc_otg_hcd);
++}
++
++#ifdef DEBUG
++static void dump_urb_info(struct urb *urb, char *fn_name)
++{
++	DWC_PRINTF("%s, urb %p\n", fn_name, urb);
++	DWC_PRINTF("  Device address: %d\n", usb_pipedevice(urb->pipe));
++	DWC_PRINTF("  Endpoint: %d, %s\n", usb_pipeendpoint(urb->pipe),
++		   (usb_pipein(urb->pipe) ? "IN" : "OUT"));
++	DWC_PRINTF("  Endpoint type: %s\n", ( {
++					     char *pipetype;
++					     switch (usb_pipetype(urb->pipe)) {
++case PIPE_CONTROL:
++pipetype = "CONTROL"; break; case PIPE_BULK:
++pipetype = "BULK"; break; case PIPE_INTERRUPT:
++pipetype = "INTERRUPT"; break; case PIPE_ISOCHRONOUS:
++pipetype = "ISOCHRONOUS"; break; default:
++					     pipetype = "UNKNOWN"; break;};
++					     pipetype;}
++		   )) ;
++	DWC_PRINTF("  Speed: %s\n", ( {
++				     char *speed; switch (urb->dev->speed) {
++case USB_SPEED_HIGH:
++speed = "HIGH"; break; case USB_SPEED_FULL:
++speed = "FULL"; break; case USB_SPEED_LOW:
++speed = "LOW"; break; default:
++				     speed = "UNKNOWN"; break;};
++				     speed;}
++		   )) ;
++	DWC_PRINTF("  Max packet size: %d\n",
++		   usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)));
++	DWC_PRINTF("  Data buffer length: %d\n", urb->transfer_buffer_length);
++	DWC_PRINTF("  Transfer buffer: %p, Transfer DMA: %p\n",
++		   urb->transfer_buffer, (void *)urb->transfer_dma);
++	DWC_PRINTF("  Setup buffer: %p, Setup DMA: %p\n",
++		   urb->setup_packet, (void *)urb->setup_dma);
++	DWC_PRINTF("  Interval: %d\n", urb->interval);
++	if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
++		int i;
++		for (i = 0; i < urb->number_of_packets; i++) {
++			DWC_PRINTF("  ISO Desc %d:\n", i);
++			DWC_PRINTF("    offset: %d, length %d\n",
++				   urb->iso_frame_desc[i].offset,
++				   urb->iso_frame_desc[i].length);
++		}
++	}
++}
++#endif
++
++/** Starts processing a USB transfer request specified by a USB Request Block
++ * (URB). mem_flags indicates the type of memory allocation to use while
++ * processing this URB. */
++static int dwc_otg_urb_enqueue(struct usb_hcd *hcd,
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++		       struct usb_host_endpoint *ep,
++#endif
++		       struct urb *urb, gfp_t mem_flags)
++{
++	int retval = 0;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
++	struct usb_host_endpoint *ep = urb->ep;
++#endif
++	dwc_irqflags_t irqflags;
++        void **ref_ep_hcpriv = &ep->hcpriv;
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++	dwc_otg_hcd_urb_t *dwc_otg_urb;
++	int i;
++	int alloc_bandwidth = 0;
++	uint8_t ep_type = 0;
++	uint32_t flags = 0;
++	void *buf;
++
++#ifdef DEBUG
++	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
++		dump_urb_info(urb, "dwc_otg_urb_enqueue");
++	}
++#endif
++	if ((usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
++	    || (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
++		if (!dwc_otg_hcd_is_bandwidth_allocated
++		    (dwc_otg_hcd, ref_ep_hcpriv)) {
++			alloc_bandwidth = 1;
++		}
++	}
++
++	switch (usb_pipetype(urb->pipe)) {
++	case PIPE_CONTROL:
++		ep_type = USB_ENDPOINT_XFER_CONTROL;
++		break;
++	case PIPE_ISOCHRONOUS:
++		ep_type = USB_ENDPOINT_XFER_ISOC;
++		break;
++	case PIPE_BULK:
++		ep_type = USB_ENDPOINT_XFER_BULK;
++		break;
++	case PIPE_INTERRUPT:
++		ep_type = USB_ENDPOINT_XFER_INT;
++		break;
++	default:
++                DWC_WARN("Wrong EP type - %d\n", usb_pipetype(urb->pipe));
++	}
++
++        /* # of packets is often 0 - do we really need to call this then? */
++	dwc_otg_urb = dwc_otg_hcd_urb_alloc(dwc_otg_hcd,
++					    urb->number_of_packets,
++					    mem_flags == GFP_ATOMIC ? 1 : 0);
++
++	if(dwc_otg_urb == NULL)
++		return -ENOMEM;
++
++	if (!dwc_otg_urb && urb->number_of_packets)
++		return -ENOMEM;
++
++	dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_urb, usb_pipedevice(urb->pipe),
++				     usb_pipeendpoint(urb->pipe), ep_type,
++				     usb_pipein(urb->pipe),
++				     usb_maxpacket(urb->dev, urb->pipe,
++						   !(usb_pipein(urb->pipe))));
++
++	buf = urb->transfer_buffer;
++	if (hcd_uses_dma(hcd) && !buf && urb->transfer_buffer_length) {
++		/*
++		 * Calculate virtual address from physical address,
++		 * because some class driver may not fill transfer_buffer.
++		 * In Buffer DMA mode virual address is used,
++		 * when handling non DWORD aligned buffers.
++		 */
++		buf = (void *)__bus_to_virt((unsigned long)urb->transfer_dma);
++		dev_warn_once(&urb->dev->dev,
++			      "USB transfer_buffer was NULL, will use __bus_to_virt(%pad)=%p\n",
++			      &urb->transfer_dma, buf);
++	}
++
++	if (!buf && urb->transfer_buffer_length) {
++		DWC_FREE(dwc_otg_urb);
++		DWC_ERROR("transfer_buffer is NULL in PIO mode or both "
++			   "transfer_buffer and transfer_dma are NULL in DMA mode\n");
++		return -EINVAL;
++	}
++
++	if (!(urb->transfer_flags & URB_NO_INTERRUPT))
++		flags |= URB_GIVEBACK_ASAP;
++	if (urb->transfer_flags & URB_ZERO_PACKET)
++		flags |= URB_SEND_ZERO_PACKET;
++
++	dwc_otg_hcd_urb_set_params(dwc_otg_urb, urb, buf,
++				   urb->transfer_dma,
++				   urb->transfer_buffer_length,
++				   urb->setup_packet,
++				   urb->setup_dma, flags, urb->interval);
++
++	for (i = 0; i < urb->number_of_packets; ++i) {
++		dwc_otg_hcd_urb_set_iso_desc_params(dwc_otg_urb, i,
++						    urb->
++						    iso_frame_desc[i].offset,
++						    urb->
++						    iso_frame_desc[i].length);
++	}
++
++	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &irqflags);
++	urb->hcpriv = dwc_otg_urb;
++#if USB_URB_EP_LINKING
++	retval = usb_hcd_link_urb_to_ep(hcd, urb);
++	if (0 == retval)
++#endif
++	{
++		retval = dwc_otg_hcd_urb_enqueue(dwc_otg_hcd, dwc_otg_urb,
++						/*(dwc_otg_qh_t **)*/
++						ref_ep_hcpriv, 1);
++		if (0 == retval) {
++			if (alloc_bandwidth) {
++				allocate_bus_bandwidth(hcd,
++						dwc_otg_hcd_get_ep_bandwidth(
++							dwc_otg_hcd, *ref_ep_hcpriv),
++						urb);
++			}
++		} else {
++			DWC_DEBUGPL(DBG_HCD, "DWC OTG dwc_otg_hcd_urb_enqueue failed rc %d\n", retval);
++#if USB_URB_EP_LINKING
++			usb_hcd_unlink_urb_from_ep(hcd, urb);
++#endif
++			DWC_FREE(dwc_otg_urb);
++			urb->hcpriv = NULL;
++			if (retval == -DWC_E_NO_DEVICE)
++				retval = -ENODEV;
++		}
++	}
++#if USB_URB_EP_LINKING
++	else
++	{
++		DWC_FREE(dwc_otg_urb);
++		urb->hcpriv = NULL;
++	}
++#endif
++	DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, irqflags);
++	return retval;
++}
++
++/** Aborts/cancels a USB transfer request. Always returns 0 to indicate
++ * success.  */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
++#else
++static int dwc_otg_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
++#endif
++{
++	dwc_irqflags_t flags;
++	dwc_otg_hcd_t *dwc_otg_hcd;
++        int rc;
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue\n");
++
++	dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++
++#ifdef DEBUG
++	if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
++		dump_urb_info(urb, "dwc_otg_urb_dequeue");
++	}
++#endif
++
++	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
++	rc = usb_hcd_check_unlink_urb(hcd, urb, status);
++	if (0 == rc) {
++		if(urb->hcpriv != NULL) {
++	                dwc_otg_hcd_urb_dequeue(dwc_otg_hcd,
++	                                    (dwc_otg_hcd_urb_t *)urb->hcpriv);
++
++		        DWC_FREE(urb->hcpriv);
++			urb->hcpriv = NULL;
++		}
++        }
++
++        if (0 == rc) {
++		/* Higher layer software sets URB status. */
++#if USB_URB_EP_LINKING
++                usb_hcd_unlink_urb_from_ep(hcd, urb);
++#endif
++		DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
++
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++                usb_hcd_giveback_urb(hcd, urb);
++#else
++                usb_hcd_giveback_urb(hcd, urb, status);
++#endif
++                if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
++                        DWC_PRINTF("Called usb_hcd_giveback_urb() \n");
++                        DWC_PRINTF("  1urb->status = %d\n", urb->status);
++                }
++                DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue OK\n");
++        } else {
++		DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
++                DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD URB Dequeue failed - rc %d\n",
++                            rc);
++        }
++
++	return rc;
++}
++
++/* Frees resources in the DWC_otg controller related to a given endpoint. Also
++ * clears state in the HCD related to the endpoint. Any URBs for the endpoint
++ * must already be dequeued. */
++static void endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++
++	DWC_DEBUGPL(DBG_HCD,
++		    "DWC OTG HCD EP DISABLE: _bEndpointAddress=0x%02x, "
++		    "endpoint=%d\n", ep->desc.bEndpointAddress,
++		    dwc_ep_addr_to_endpoint(ep->desc.bEndpointAddress));
++	dwc_otg_hcd_endpoint_disable(dwc_otg_hcd, ep->hcpriv, 250);
++	ep->hcpriv = NULL;
++}
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30)
++/* Resets endpoint specific parameter values, in current version used to reset
++ * the data toggle(as a WA). This function can be called from usb_clear_halt routine */
++static void endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
++{
++	dwc_irqflags_t flags;
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP RESET: Endpoint Num=0x%02d\n", epnum);
++
++	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
++	if (ep->hcpriv) {
++		dwc_otg_hcd_endpoint_reset(dwc_otg_hcd, ep->hcpriv);
++	}
++	DWC_SPINUNLOCK_IRQRESTORE(dwc_otg_hcd->lock, flags);
++}
++#endif
++
++/** Handles host mode interrupts for the DWC_otg controller. Returns IRQ_NONE if
++ * there was no interrupt to handle. Returns IRQ_HANDLED if there was a valid
++ * interrupt.
++ *
++ * This function is called by the USB core when an interrupt occurs */
++static irqreturn_t dwc_otg_hcd_irq(struct usb_hcd *hcd)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++	int32_t retval = dwc_otg_hcd_handle_intr(dwc_otg_hcd);
++	if (retval != 0) {
++		S3C2410X_CLEAR_EINTPEND();
++	}
++	return IRQ_RETVAL(retval);
++}
++
++/** Creates Status Change bitmap for the root hub and root port. The bitmap is
++ * returned in buf. Bit 0 is the status change indicator for the root hub. Bit 1
++ * is the status change indicator for the single root port. Returns 1 if either
++ * change indicator is 1, otherwise returns 0. */
++int hub_status_data(struct usb_hcd *hcd, char *buf)
++{
++	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
++
++	buf[0] = 0;
++	buf[0] |= (dwc_otg_hcd_is_status_changed(dwc_otg_hcd, 1)) << 1;
++
++	return (buf[0] != 0);
++}
++
++/** Handles hub class-specific requests. */
++int hub_control(struct usb_hcd *hcd,
++		u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength)
++{
++	int retval;
++
++	retval = dwc_otg_hcd_hub_control(hcd_to_dwc_otg_hcd(hcd),
++					 typeReq, wValue, wIndex, buf, wLength);
++
++	switch (retval) {
++	case -DWC_E_INVALID:
++		retval = -EINVAL;
++		break;
++	}
++
++	return retval;
++}
++
++#endif /* DWC_DEVICE_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
+@@ -0,0 +1,970 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_hcd_queue.c $
++ * $Revision: #44 $
++ * $Date: 2011/10/26 $
++ * $Change: 1873028 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_DEVICE_ONLY
++
++/**
++ * @file
++ *
++ * This file contains the functions to manage Queue Heads and Queue
++ * Transfer Descriptors.
++ */
++
++#include "dwc_otg_hcd.h"
++#include "dwc_otg_regs.h"
++
++extern bool microframe_schedule;
++extern unsigned short int_ep_interval_min;
++
++/**
++ * Free each QTD in the QH's QTD-list then free the QH.  QH should already be
++ * removed from a list.  QTD list should already be empty if called from URB
++ * Dequeue.
++ *
++ * @param hcd HCD instance.
++ * @param qh The QH to free.
++ */
++void dwc_otg_hcd_qh_free(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	dwc_otg_qtd_t *qtd, *qtd_tmp;
++	dwc_irqflags_t flags;
++	uint32_t buf_size = 0;
++	uint8_t *align_buf_virt = NULL;
++	dwc_dma_t align_buf_dma;
++	struct device *dev = dwc_otg_hcd_to_dev(hcd);
++
++	/* Free each QTD in the QTD list */
++	DWC_SPINLOCK_IRQSAVE(hcd->lock, &flags);
++	DWC_CIRCLEQ_FOREACH_SAFE(qtd, qtd_tmp, &qh->qtd_list, qtd_list_entry) {
++		DWC_CIRCLEQ_REMOVE(&qh->qtd_list, qtd, qtd_list_entry);
++		dwc_otg_hcd_qtd_free(qtd);
++	}
++
++	if (hcd->core_if->dma_desc_enable) {
++		dwc_otg_hcd_qh_free_ddma(hcd, qh);
++	} else if (qh->dw_align_buf) {
++		if (qh->ep_type == UE_ISOCHRONOUS) {
++			buf_size = 4096;
++		} else {
++			buf_size = hcd->core_if->core_params->max_transfer_size;
++		}
++		align_buf_virt = qh->dw_align_buf;
++		align_buf_dma = qh->dw_align_buf_dma;
++	}
++
++	DWC_FREE(qh);
++	DWC_SPINUNLOCK_IRQRESTORE(hcd->lock, flags);
++	if (align_buf_virt)
++		DWC_DMA_FREE(dev, buf_size, align_buf_virt, align_buf_dma);
++	return;
++}
++
++#define BitStuffTime(bytecount)  ((8 * 7* bytecount) / 6)
++#define HS_HOST_DELAY		5	/* nanoseconds */
++#define FS_LS_HOST_DELAY	1000	/* nanoseconds */
++#define HUB_LS_SETUP		333	/* nanoseconds */
++#define NS_TO_US(ns)		((ns + 500) / 1000)
++				/* convert & round nanoseconds to microseconds */
++
++static uint32_t calc_bus_time(int speed, int is_in, int is_isoc, int bytecount)
++{
++	unsigned long retval;
++
++	switch (speed) {
++	case USB_SPEED_HIGH:
++		if (is_isoc) {
++			retval =
++			    ((38 * 8 * 2083) +
++			     (2083 * (3 + BitStuffTime(bytecount)))) / 1000 +
++			    HS_HOST_DELAY;
++		} else {
++			retval =
++			    ((55 * 8 * 2083) +
++			     (2083 * (3 + BitStuffTime(bytecount)))) / 1000 +
++			    HS_HOST_DELAY;
++		}
++		break;
++	case USB_SPEED_FULL:
++		if (is_isoc) {
++			retval =
++			    (8354 * (31 + 10 * BitStuffTime(bytecount))) / 1000;
++			if (is_in) {
++				retval = 7268 + FS_LS_HOST_DELAY + retval;
++			} else {
++				retval = 6265 + FS_LS_HOST_DELAY + retval;
++			}
++		} else {
++			retval =
++			    (8354 * (31 + 10 * BitStuffTime(bytecount))) / 1000;
++			retval = 9107 + FS_LS_HOST_DELAY + retval;
++		}
++		break;
++	case USB_SPEED_LOW:
++		if (is_in) {
++			retval =
++			    (67667 * (31 + 10 * BitStuffTime(bytecount))) /
++			    1000;
++			retval =
++			    64060 + (2 * HUB_LS_SETUP) + FS_LS_HOST_DELAY +
++			    retval;
++		} else {
++			retval =
++			    (66700 * (31 + 10 * BitStuffTime(bytecount))) /
++			    1000;
++			retval =
++			    64107 + (2 * HUB_LS_SETUP) + FS_LS_HOST_DELAY +
++			    retval;
++		}
++		break;
++	default:
++		DWC_WARN("Unknown device speed\n");
++		retval = -1;
++	}
++
++	return NS_TO_US(retval);
++}
++
++/**
++ * Initializes a QH structure.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh  The QH to init.
++ * @param urb Holds the information about the device/endpoint that we need
++ * 	      to initialize the QH.
++ */
++#define SCHEDULE_SLOP 10
++void qh_init(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, dwc_otg_hcd_urb_t * urb)
++{
++	char *speed, *type;
++	int dev_speed;
++	uint32_t hub_addr, hub_port;
++	hprt0_data_t hprt;
++
++	dwc_memset(qh, 0, sizeof(dwc_otg_qh_t));
++	hprt.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
++
++	/* Initialize QH */
++	qh->ep_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
++	qh->ep_is_in = dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? 1 : 0;
++
++	qh->data_toggle = DWC_OTG_HC_PID_DATA0;
++	qh->maxp = dwc_otg_hcd_get_mps(&urb->pipe_info);
++	DWC_CIRCLEQ_INIT(&qh->qtd_list);
++	DWC_LIST_INIT(&qh->qh_list_entry);
++	qh->channel = NULL;
++
++	/* FS/LS Enpoint on HS Hub
++	 * NOT virtual root hub */
++	dev_speed = hcd->fops->speed(hcd, urb->priv);
++
++	hcd->fops->hub_info(hcd, urb->priv, &hub_addr, &hub_port);
++	qh->do_split = 0;
++	if (microframe_schedule)
++		qh->speed = dev_speed;
++
++	qh->nak_frame = 0xffff;
++
++	if (hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED &&
++			dev_speed != USB_SPEED_HIGH) {
++		DWC_DEBUGPL(DBG_HCD,
++			    "QH init: EP %d: TT found at hub addr %d, for port %d\n",
++			    dwc_otg_hcd_get_ep_num(&urb->pipe_info), hub_addr,
++			    hub_port);
++		qh->do_split = 1;
++		qh->skip_count = 0;
++	}
++
++	if (qh->ep_type == UE_INTERRUPT || qh->ep_type == UE_ISOCHRONOUS) {
++		/* Compute scheduling parameters once and save them. */
++
++		/** @todo Account for split transfers in the bus time. */
++		int bytecount =
++		    dwc_hb_mult(qh->maxp) * dwc_max_packet(qh->maxp);
++
++		qh->usecs =
++		    calc_bus_time((qh->do_split ? USB_SPEED_HIGH : dev_speed),
++				  qh->ep_is_in, (qh->ep_type == UE_ISOCHRONOUS),
++				  bytecount);
++		/* Start in a slightly future (micro)frame. */
++		qh->sched_frame = dwc_frame_num_inc(hcd->frame_number,
++						    SCHEDULE_SLOP);
++		qh->interval = urb->interval;
++
++		if (hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) {
++			if (dev_speed == USB_SPEED_LOW ||
++					dev_speed == USB_SPEED_FULL) {
++				qh->interval *= 8;
++				qh->sched_frame |= 0x7;
++				qh->start_split_frame = qh->sched_frame;
++			} else if (int_ep_interval_min >= 2 &&
++					qh->interval < int_ep_interval_min &&
++					qh->ep_type == UE_INTERRUPT) {
++				qh->interval = int_ep_interval_min;
++			}
++		}
++	}
++
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD QH Initialized\n");
++	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - qh = %p\n", qh);
++	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Device Address = %d\n",
++		    dwc_otg_hcd_get_dev_addr(&urb->pipe_info));
++	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Endpoint %d, %s\n",
++		    dwc_otg_hcd_get_ep_num(&urb->pipe_info),
++		    dwc_otg_hcd_is_pipe_in(&urb->pipe_info) ? "IN" : "OUT");
++	switch (dev_speed) {
++	case USB_SPEED_LOW:
++		qh->dev_speed = DWC_OTG_EP_SPEED_LOW;
++		speed = "low";
++		break;
++	case USB_SPEED_FULL:
++		qh->dev_speed = DWC_OTG_EP_SPEED_FULL;
++		speed = "full";
++		break;
++	case USB_SPEED_HIGH:
++		qh->dev_speed = DWC_OTG_EP_SPEED_HIGH;
++		speed = "high";
++		break;
++	default:
++		speed = "?";
++		break;
++	}
++	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Speed = %s\n", speed);
++
++	switch (qh->ep_type) {
++	case UE_ISOCHRONOUS:
++		type = "isochronous";
++		break;
++	case UE_INTERRUPT:
++		type = "interrupt";
++		break;
++	case UE_CONTROL:
++		type = "control";
++		break;
++	case UE_BULK:
++		type = "bulk";
++		break;
++	default:
++		type = "?";
++		break;
++	}
++
++	DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH  - Type = %s\n", type);
++
++#ifdef DEBUG
++	if (qh->ep_type == UE_INTERRUPT) {
++		DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - usecs = %d\n",
++			    qh->usecs);
++		DWC_DEBUGPL(DBG_HCDV, "DWC OTG HCD QH - interval = %d\n",
++			    qh->interval);
++	}
++#endif
++
++}
++
++/**
++ * This function allocates and initializes a QH.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param urb Holds the information about the device/endpoint that we need
++ * 	      to initialize the QH.
++ * @param atomic_alloc Flag to do atomic allocation if needed
++ *
++ * @return Returns pointer to the newly allocated QH, or NULL on error. */
++dwc_otg_qh_t *dwc_otg_hcd_qh_create(dwc_otg_hcd_t * hcd,
++				    dwc_otg_hcd_urb_t * urb, int atomic_alloc)
++{
++	dwc_otg_qh_t *qh;
++
++	/* Allocate memory */
++	/** @todo add memflags argument */
++	qh = dwc_otg_hcd_qh_alloc(atomic_alloc);
++	if (qh == NULL) {
++		DWC_ERROR("qh allocation failed");
++		return NULL;
++	}
++
++	qh_init(hcd, qh, urb);
++
++	if (hcd->core_if->dma_desc_enable
++	    && (dwc_otg_hcd_qh_init_ddma(hcd, qh) < 0)) {
++		dwc_otg_hcd_qh_free(hcd, qh);
++		return NULL;
++	}
++
++	return qh;
++}
++
++/* microframe_schedule=0 start */
++
++/**
++ * Checks that a channel is available for a periodic transfer.
++ *
++ * @return 0 if successful, negative error code otherise.
++ */
++static int periodic_channel_available(dwc_otg_hcd_t * hcd)
++{
++	/*
++	 * Currently assuming that there is a dedicated host channnel for each
++	 * periodic transaction plus at least one host channel for
++	 * non-periodic transactions.
++	 */
++	int status;
++	int num_channels;
++
++	num_channels = hcd->core_if->core_params->host_channels;
++	if ((hcd->periodic_channels + hcd->non_periodic_channels < num_channels)
++	    && (hcd->periodic_channels < num_channels - 1)) {
++		status = 0;
++	} else {
++		DWC_INFO("%s: Total channels: %d, Periodic: %d, Non-periodic: %d\n",
++			__func__, num_channels, hcd->periodic_channels, hcd->non_periodic_channels);	//NOTICE
++		status = -DWC_E_NO_SPACE;
++	}
++
++	return status;
++}
++
++/**
++ * Checks that there is sufficient bandwidth for the specified QH in the
++ * periodic schedule. For simplicity, this calculation assumes that all the
++ * transfers in the periodic schedule may occur in the same (micro)frame.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh QH containing periodic bandwidth required.
++ *
++ * @return 0 if successful, negative error code otherwise.
++ */
++static int check_periodic_bandwidth(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	int status;
++	int16_t max_claimed_usecs;
++
++	status = 0;
++
++	if ((qh->dev_speed == DWC_OTG_EP_SPEED_HIGH) || qh->do_split) {
++		/*
++		 * High speed mode.
++		 * Max periodic usecs is 80% x 125 usec = 100 usec.
++		 */
++
++		max_claimed_usecs = 100 - qh->usecs;
++	} else {
++		/*
++		 * Full speed mode.
++		 * Max periodic usecs is 90% x 1000 usec = 900 usec.
++		 */
++		max_claimed_usecs = 900 - qh->usecs;
++	}
++
++	if (hcd->periodic_usecs > max_claimed_usecs) {
++		DWC_INFO("%s: already claimed usecs %d, required usecs %d\n", __func__, hcd->periodic_usecs, qh->usecs);	//NOTICE
++		status = -DWC_E_NO_SPACE;
++	}
++
++	return status;
++}
++
++/* microframe_schedule=0 end */
++
++/**
++ * Microframe scheduler
++ * track the total use in hcd->frame_usecs
++ * keep each qh use in qh->frame_usecs
++ * when surrendering the qh then donate the time back
++ */
++const unsigned short max_uframe_usecs[]={ 100, 100, 100, 100, 100, 100, 30, 0 };
++
++/*
++ * called from dwc_otg_hcd.c:dwc_otg_hcd_init
++ */
++void init_hcd_usecs(dwc_otg_hcd_t *_hcd)
++{
++	int i;
++	if (_hcd->flags.b.port_speed == DWC_HPRT0_PRTSPD_FULL_SPEED) {
++		_hcd->frame_usecs[0] = 900;
++		for (i = 1; i < 8; i++)
++			_hcd->frame_usecs[i] = 0;
++	} else {
++		for (i = 0; i < 8; i++)
++			_hcd->frame_usecs[i] = max_uframe_usecs[i];
++	}
++}
++
++static int find_single_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
++{
++	int i;
++	unsigned short utime;
++	int t_left;
++	int ret;
++	int done;
++
++	ret = -1;
++	utime = _qh->usecs;
++	t_left = utime;
++	i = 0;
++	done = 0;
++	while (done == 0) {
++		/* At the start _hcd->frame_usecs[i] = max_uframe_usecs[i]; */
++		if (utime <= _hcd->frame_usecs[i]) {
++			_hcd->frame_usecs[i] -= utime;
++			_qh->frame_usecs[i] += utime;
++			t_left -= utime;
++			ret = i;
++			done = 1;
++			return ret;
++		} else {
++			i++;
++			if (i == 8) {
++				done = 1;
++				ret = -1;
++			}
++		}
++	}
++	return ret;
++ }
++
++/*
++ * use this for FS apps that can span multiple uframes
++  */
++static int find_multi_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
++{
++	int i;
++	int j;
++	unsigned short utime;
++	int t_left;
++	int ret;
++	int done;
++	unsigned short xtime;
++
++	ret = -1;
++	utime = _qh->usecs;
++	t_left = utime;
++	i = 0;
++	done = 0;
++loop:
++	while (done == 0) {
++		if(_hcd->frame_usecs[i] <= 0) {
++			i++;
++			if (i == 8) {
++				done = 1;
++				ret = -1;
++			}
++			goto loop;
++		}
++
++		/*
++		 * we need n consecutive slots
++		 * so use j as a start slot j plus j+1 must be enough time (for now)
++		 */
++		xtime= _hcd->frame_usecs[i];
++		for (j = i+1 ; j < 8 ; j++ ) {
++                       /*
++                        * if we add this frame remaining time to xtime we may
++                        * be OK, if not we need to test j for a complete frame
++                        */
++                       if ((xtime+_hcd->frame_usecs[j]) < utime) {
++                               if (_hcd->frame_usecs[j] < max_uframe_usecs[j]) {
++                                       j = 8;
++                                       ret = -1;
++                                       continue;
++                               }
++                       }
++                       if (xtime >= utime) {
++                               ret = i;
++                               j = 8;  /* stop loop with a good value ret */
++                               continue;
++                       }
++                       /* add the frame time to x time */
++                       xtime += _hcd->frame_usecs[j];
++		       /* we must have a fully available next frame or break */
++		       if ((xtime < utime)
++				       && (_hcd->frame_usecs[j] == max_uframe_usecs[j])) {
++			       ret = -1;
++			       j = 8;  /* stop loop with a bad value ret */
++			       continue;
++		       }
++		}
++		if (ret >= 0) {
++			t_left = utime;
++			for (j = i; (t_left>0) && (j < 8); j++ ) {
++				t_left -= _hcd->frame_usecs[j];
++				if ( t_left <= 0 ) {
++					_qh->frame_usecs[j] += _hcd->frame_usecs[j] + t_left;
++					_hcd->frame_usecs[j]= -t_left;
++					ret = i;
++					done = 1;
++				} else {
++					_qh->frame_usecs[j] += _hcd->frame_usecs[j];
++					_hcd->frame_usecs[j] = 0;
++				}
++			}
++		} else {
++			i++;
++			if (i == 8) {
++				done = 1;
++				ret = -1;
++			}
++		}
++	}
++	return ret;
++}
++
++static int find_uframe(dwc_otg_hcd_t * _hcd, dwc_otg_qh_t * _qh)
++{
++	int ret;
++	ret = -1;
++
++	if (_qh->speed == USB_SPEED_HIGH ||
++		_hcd->flags.b.port_speed == DWC_HPRT0_PRTSPD_FULL_SPEED) {
++		/* if this is a hs transaction we need a full frame - or account for FS usecs */
++		ret = find_single_uframe(_hcd, _qh);
++	} else {
++		/* if this is a fs transaction we may need a sequence of frames */
++		ret = find_multi_uframe(_hcd, _qh);
++	}
++	return ret;
++}
++
++/**
++ * Checks that the max transfer size allowed in a host channel is large enough
++ * to handle the maximum data transfer in a single (micro)frame for a periodic
++ * transfer.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh QH for a periodic endpoint.
++ *
++ * @return 0 if successful, negative error code otherwise.
++ */
++static int check_max_xfer_size(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	int status;
++	uint32_t max_xfer_size;
++	uint32_t max_channel_xfer_size;
++
++	status = 0;
++
++	max_xfer_size = dwc_max_packet(qh->maxp) * dwc_hb_mult(qh->maxp);
++	max_channel_xfer_size = hcd->core_if->core_params->max_transfer_size;
++
++	if (max_xfer_size > max_channel_xfer_size) {
++		DWC_INFO("%s: Periodic xfer length %d > " "max xfer length for channel %d\n",
++				__func__, max_xfer_size, max_channel_xfer_size);	//NOTICE
++		status = -DWC_E_NO_SPACE;
++	}
++
++	return status;
++}
++
++
++
++/**
++ * Schedules an interrupt or isochronous transfer in the periodic schedule.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh QH for the periodic transfer. The QH should already contain the
++ * scheduling information.
++ *
++ * @return 0 if successful, negative error code otherwise.
++ */
++static int schedule_periodic(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	int status = 0;
++
++	if (microframe_schedule) {
++		int frame;
++		status = find_uframe(hcd, qh);
++		frame = -1;
++		if (status == 0) {
++			frame = 7;
++		} else {
++			if (status > 0 )
++				frame = status-1;
++		}
++
++		/* Set the new frame up */
++		if (frame > -1) {
++			qh->sched_frame &= ~0x7;
++			qh->sched_frame |= (frame & 7);
++		}
++
++		if (status != -1)
++			status = 0;
++	} else {
++		status = periodic_channel_available(hcd);
++		if (status) {
++			DWC_INFO("%s: No host channel available for periodic " "transfer.\n", __func__);	//NOTICE
++			return status;
++		}
++
++		status = check_periodic_bandwidth(hcd, qh);
++	}
++	if (status) {
++		DWC_INFO("%s: Insufficient periodic bandwidth for "
++			    "periodic transfer.\n", __func__);
++		return -DWC_E_NO_SPACE;
++	}
++	status = check_max_xfer_size(hcd, qh);
++	if (status) {
++		DWC_INFO("%s: Channel max transfer size too small "
++			    "for periodic transfer.\n", __func__);
++		return status;
++	}
++
++	if (hcd->core_if->dma_desc_enable) {
++		/* Don't rely on SOF and start in ready schedule */
++		DWC_LIST_INSERT_TAIL(&hcd->periodic_sched_ready, &qh->qh_list_entry);
++	}
++	else {
++		if(fiq_enable && (DWC_LIST_EMPTY(&hcd->periodic_sched_inactive) || dwc_frame_num_le(qh->sched_frame, hcd->fiq_state->next_sched_frame)))
++		{
++			hcd->fiq_state->next_sched_frame = qh->sched_frame;
++
++		}
++		/* Always start in the inactive schedule. */
++		DWC_LIST_INSERT_TAIL(&hcd->periodic_sched_inactive, &qh->qh_list_entry);
++	}
++
++	if (!microframe_schedule) {
++		/* Reserve the periodic channel. */
++		hcd->periodic_channels++;
++	}
++
++	/* Update claimed usecs per (micro)frame. */
++	hcd->periodic_usecs += qh->usecs;
++
++	return status;
++}
++
++
++/**
++ * This function adds a QH to either the non periodic or periodic schedule if
++ * it is not already in the schedule. If the QH is already in the schedule, no
++ * action is taken.
++ *
++ * @return 0 if successful, negative error code otherwise.
++ */
++int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	int status = 0;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	if (!DWC_LIST_EMPTY(&qh->qh_list_entry)) {
++		/* QH already in a schedule. */
++		return status;
++	}
++
++	/* Add the new QH to the appropriate schedule */
++	if (dwc_qh_is_non_per(qh)) {
++		/* Always start in the inactive schedule. */
++		DWC_LIST_INSERT_TAIL(&hcd->non_periodic_sched_inactive,
++				     &qh->qh_list_entry);
++		//hcd->fiq_state->kick_np_queues = 1;
++	} else {
++		status = schedule_periodic(hcd, qh);
++		if ( !hcd->periodic_qh_count ) {
++			intr_mask.b.sofintr = 1;
++			if (fiq_enable) {
++				local_fiq_disable();
++				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
++				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++				local_fiq_enable();
++			} else {
++				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, intr_mask.d32);
++			}
++		}
++		hcd->periodic_qh_count++;
++	}
++
++	return status;
++}
++
++/**
++ * Removes an interrupt or isochronous transfer from the periodic schedule.
++ *
++ * @param hcd The HCD state structure for the DWC OTG controller.
++ * @param qh QH for the periodic transfer.
++ */
++static void deschedule_periodic(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	int i;
++	DWC_LIST_REMOVE_INIT(&qh->qh_list_entry);
++
++	/* Update claimed usecs per (micro)frame. */
++	hcd->periodic_usecs -= qh->usecs;
++
++	if (!microframe_schedule) {
++		/* Release the periodic channel reservation. */
++		hcd->periodic_channels--;
++	} else {
++		for (i = 0; i < 8; i++) {
++			hcd->frame_usecs[i] += qh->frame_usecs[i];
++			qh->frame_usecs[i] = 0;
++		}
++	}
++}
++
++/**
++ * Removes a QH from either the non-periodic or periodic schedule.  Memory is
++ * not freed.
++ *
++ * @param hcd The HCD state structure.
++ * @param qh QH to remove from schedule. */
++void dwc_otg_hcd_qh_remove(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
++{
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	if (DWC_LIST_EMPTY(&qh->qh_list_entry)) {
++		/* QH is not in a schedule. */
++		return;
++	}
++
++	if (dwc_qh_is_non_per(qh)) {
++		if (hcd->non_periodic_qh_ptr == &qh->qh_list_entry) {
++			hcd->non_periodic_qh_ptr =
++			    hcd->non_periodic_qh_ptr->next;
++		}
++		DWC_LIST_REMOVE_INIT(&qh->qh_list_entry);
++		//if (!DWC_LIST_EMPTY(&hcd->non_periodic_sched_inactive))
++		//	hcd->fiq_state->kick_np_queues = 1;
++	} else {
++		deschedule_periodic(hcd, qh);
++		hcd->periodic_qh_count--;
++		if( !hcd->periodic_qh_count && !fiq_fsm_enable ) {
++			intr_mask.b.sofintr = 1;
++			if (fiq_enable) {
++				local_fiq_disable();
++				fiq_fsm_spin_lock(&hcd->fiq_state->lock);
++				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
++				fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
++				local_fiq_enable();
++			} else {
++				DWC_MODIFY_REG32(&hcd->core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
++			}
++		}
++	}
++}
++
++/**
++ * Deactivates a QH. For non-periodic QHs, removes the QH from the active
++ * non-periodic schedule. The QH is added to the inactive non-periodic
++ * schedule if any QTDs are still attached to the QH.
++ *
++ * For periodic QHs, the QH is removed from the periodic queued schedule. If
++ * there are any QTDs still attached to the QH, the QH is added to either the
++ * periodic inactive schedule or the periodic ready schedule and its next
++ * scheduled frame is calculated. The QH is placed in the ready schedule if
++ * the scheduled frame has been reached already. Otherwise it's placed in the
++ * inactive schedule. If there are no QTDs attached to the QH, the QH is
++ * completely removed from the periodic schedule.
++ */
++void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
++			       int sched_next_periodic_split)
++{
++	if (dwc_qh_is_non_per(qh)) {
++		dwc_otg_hcd_qh_remove(hcd, qh);
++		if (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
++			/* Add back to inactive non-periodic schedule. */
++			dwc_otg_hcd_qh_add(hcd, qh);
++			//hcd->fiq_state->kick_np_queues = 1;
++		} else {
++			if(nak_holdoff && qh->do_split) {
++				qh->nak_frame = 0xFFFF;
++			}
++		}
++	} else {
++		uint16_t frame_number = dwc_otg_hcd_get_frame_number(hcd);
++
++		if (qh->do_split) {
++			/* Schedule the next continuing periodic split transfer */
++			if (sched_next_periodic_split) {
++
++				qh->sched_frame = frame_number;
++
++				if (dwc_frame_num_le(frame_number,
++						     dwc_frame_num_inc
++						     (qh->start_split_frame,
++						      1))) {
++					/*
++					 * Allow one frame to elapse after start
++					 * split microframe before scheduling
++					 * complete split, but DONT if we are
++					 * doing the next start split in the
++					 * same frame for an ISOC out.
++					 */
++					if ((qh->ep_type != UE_ISOCHRONOUS) ||
++					    (qh->ep_is_in != 0)) {
++						qh->sched_frame =
++						    dwc_frame_num_inc(qh->sched_frame, 1);
++					}
++				}
++			} else {
++				qh->sched_frame =
++				    dwc_frame_num_inc(qh->start_split_frame,
++						      qh->interval);
++				if (dwc_frame_num_le
++				    (qh->sched_frame, frame_number)) {
++					qh->sched_frame = frame_number;
++				}
++				qh->sched_frame |= 0x7;
++				qh->start_split_frame = qh->sched_frame;
++			}
++		} else {
++			qh->sched_frame =
++			    dwc_frame_num_inc(qh->sched_frame, qh->interval);
++			if (dwc_frame_num_le(qh->sched_frame, frame_number)) {
++				qh->sched_frame = frame_number;
++			}
++		}
++
++		if (DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
++			dwc_otg_hcd_qh_remove(hcd, qh);
++		} else {
++			/*
++			 * Remove from periodic_sched_queued and move to
++			 * appropriate queue.
++			 */
++			if ((microframe_schedule && dwc_frame_num_le(qh->sched_frame, frame_number)) ||
++			(!microframe_schedule && qh->sched_frame == frame_number)) {
++				DWC_LIST_MOVE_HEAD(&hcd->periodic_sched_ready,
++						   &qh->qh_list_entry);
++			} else {
++				if(fiq_enable && !dwc_frame_num_le(hcd->fiq_state->next_sched_frame, qh->sched_frame))
++				{
++					hcd->fiq_state->next_sched_frame = qh->sched_frame;
++				}
++
++				DWC_LIST_MOVE_HEAD
++				    (&hcd->periodic_sched_inactive,
++				     &qh->qh_list_entry);
++			}
++		}
++	}
++}
++
++/**
++ * This function allocates and initializes a QTD.
++ *
++ * @param urb The URB to create a QTD from.  Each URB-QTD pair will end up
++ * 	      pointing to each other so each pair should have a unique correlation.
++ * @param atomic_alloc Flag to do atomic alloc if needed
++ *
++ * @return Returns pointer to the newly allocated QTD, or NULL on error. */
++dwc_otg_qtd_t *dwc_otg_hcd_qtd_create(dwc_otg_hcd_urb_t * urb, int atomic_alloc)
++{
++	dwc_otg_qtd_t *qtd;
++
++	qtd = dwc_otg_hcd_qtd_alloc(atomic_alloc);
++	if (qtd == NULL) {
++		return NULL;
++	}
++
++	dwc_otg_hcd_qtd_init(qtd, urb);
++	return qtd;
++}
++
++/**
++ * Initializes a QTD structure.
++ *
++ * @param qtd The QTD to initialize.
++ * @param urb The URB to use for initialization.  */
++void dwc_otg_hcd_qtd_init(dwc_otg_qtd_t * qtd, dwc_otg_hcd_urb_t * urb)
++{
++	dwc_memset(qtd, 0, sizeof(dwc_otg_qtd_t));
++	qtd->urb = urb;
++	if (dwc_otg_hcd_get_pipe_type(&urb->pipe_info) == UE_CONTROL) {
++		/*
++		 * The only time the QTD data toggle is used is on the data
++		 * phase of control transfers. This phase always starts with
++		 * DATA1.
++		 */
++		qtd->data_toggle = DWC_OTG_HC_PID_DATA1;
++		qtd->control_phase = DWC_OTG_CONTROL_SETUP;
++	}
++
++	/* start split */
++	qtd->complete_split = 0;
++	qtd->isoc_split_pos = DWC_HCSPLIT_XACTPOS_ALL;
++	qtd->isoc_split_offset = 0;
++	qtd->in_process = 0;
++
++	/* Store the qtd ptr in the urb to reference what QTD. */
++	urb->qtd = qtd;
++	return;
++}
++
++/**
++ * This function adds a QTD to the QTD-list of a QH.  It will find the correct
++ * QH to place the QTD into.  If it does not find a QH, then it will create a
++ * new QH. If the QH to which the QTD is added is not currently scheduled, it
++ * is placed into the proper schedule based on its EP type.
++ * HCD lock must be held and interrupts must be disabled on entry
++ *
++ * @param[in] qtd The QTD to add
++ * @param[in] hcd The DWC HCD structure
++ * @param[out] qh out parameter to return queue head
++ * @param atomic_alloc Flag to do atomic alloc if needed
++ *
++ * @return 0 if successful, negative error code otherwise.
++ */
++int dwc_otg_hcd_qtd_add(dwc_otg_qtd_t * qtd,
++			dwc_otg_hcd_t * hcd, dwc_otg_qh_t ** qh, int atomic_alloc)
++{
++	int retval = 0;
++	dwc_otg_hcd_urb_t *urb = qtd->urb;
++
++	/*
++	 * Get the QH which holds the QTD-list to insert to. Create QH if it
++	 * doesn't exist.
++	 */
++	if (*qh == NULL) {
++		*qh = dwc_otg_hcd_qh_create(hcd, urb, atomic_alloc);
++		if (*qh == NULL) {
++			retval = -DWC_E_NO_MEMORY;
++			goto done;
++		} else {
++			if (fiq_enable)
++				hcd->fiq_state->kick_np_queues = 1;
++		}
++	}
++	retval = dwc_otg_hcd_qh_add(hcd, *qh);
++	if (retval == 0) {
++		DWC_CIRCLEQ_INSERT_TAIL(&((*qh)->qtd_list), qtd,
++					qtd_list_entry);
++		qtd->qh = *qh;
++	}
++done:
++
++	return retval;
++}
++
++#endif /* DWC_DEVICE_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_os_dep.h
+@@ -0,0 +1,200 @@
++#ifndef _DWC_OS_DEP_H_
++#define _DWC_OS_DEP_H_
++
++/**
++ * @file
++ *
++ * This file contains OS dependent structures.
++ *
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/init.h>
++#include <linux/device.h>
++#include <linux/errno.h>
++#include <linux/types.h>
++#include <linux/slab.h>
++#include <linux/list.h>
++#include <linux/interrupt.h>
++#include <linux/ctype.h>
++#include <linux/string.h>
++#include <linux/dma-mapping.h>
++#include <linux/jiffies.h>
++#include <linux/delay.h>
++#include <linux/timer.h>
++#include <linux/workqueue.h>
++#include <linux/stat.h>
++#include <linux/pci.h>
++#include <linux/compiler.h>
++
++#include <linux/version.h>
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
++# include <linux/irq.h>
++#endif
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
++# include <linux/usb/ch9.h>
++#else
++# include <linux/usb_ch9.h>
++#endif
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
++# include <linux/usb/gadget.h>
++#else
++# include <linux/usb_gadget.h>
++#endif
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
++# include <asm/irq.h>
++#endif
++
++#ifdef PCI_INTERFACE
++# include <asm/io.h>
++#endif
++
++#ifdef LM_INTERFACE
++# include <asm/unaligned.h>
++# include <asm/sizes.h>
++# include <asm/param.h>
++# include <asm/io.h>
++# if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30))
++#  include <asm/arch/hardware.h>
++#  include <asm/arch/lm.h>
++#  include <asm/arch/irqs.h>
++#  include <asm/arch/regs-irq.h>
++# else
++/* in 2.6.31, at least, we seem to have lost the generic LM infrastructure -
++   here we assume that the machine architecture provides definitions
++   in its own header
++*/
++#  include <mach/lm.h>
++#  include <mach/hardware.h>
++# endif
++#endif
++
++#ifdef PLATFORM_INTERFACE
++#include <linux/platform_device.h>
++#ifdef CONFIG_ARM
++#include <asm/mach/map.h>
++#endif
++#endif
++
++/** The OS page size */
++#define DWC_OS_PAGE_SIZE	PAGE_SIZE
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
++typedef int gfp_t;
++#endif
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
++# define IRQF_SHARED SA_SHIRQ
++#endif
++
++typedef struct os_dependent {
++	/** Base address returned from ioremap() */
++	void *base;
++
++	/** Register offset for Diagnostic API */
++	uint32_t reg_offset;
++
++	/** Base address for MPHI peripheral */
++	void *mphi_base;
++
++	/** mphi_base actually points to the SWIRQ block */
++	bool use_swirq;
++
++	/** IRQ number (<0 if not valid) */
++	int irq_num;
++
++	/** FIQ number (<0 if not valid) */
++	int fiq_num;
++
++#ifdef LM_INTERFACE
++	struct lm_device *lmdev;
++#elif  defined(PCI_INTERFACE)
++	struct pci_dev *pcidev;
++
++	/** Start address of a PCI region */
++	resource_size_t rsrc_start;
++
++	/** Length address of a PCI region */
++	resource_size_t rsrc_len;
++#elif  defined(PLATFORM_INTERFACE)
++	struct platform_device *platformdev;
++#endif
++
++} os_dependent_t;
++
++#ifdef __cplusplus
++}
++#endif
++
++
++
++/* Type for the our device on the chosen bus */
++#if   defined(LM_INTERFACE)
++typedef struct lm_device       dwc_bus_dev_t;
++#elif defined(PCI_INTERFACE)
++typedef struct pci_dev         dwc_bus_dev_t;
++#elif defined(PLATFORM_INTERFACE)
++typedef struct platform_device dwc_bus_dev_t;
++#endif
++
++/* Helper macro to retrieve drvdata from the device on the chosen bus */
++#if    defined(LM_INTERFACE)
++#define DWC_OTG_BUSDRVDATA(_dev) lm_get_drvdata(_dev)
++#elif  defined(PCI_INTERFACE)
++#define DWC_OTG_BUSDRVDATA(_dev) pci_get_drvdata(_dev)
++#elif  defined(PLATFORM_INTERFACE)
++#define DWC_OTG_BUSDRVDATA(_dev) platform_get_drvdata(_dev)
++#endif
++
++/**
++ * Helper macro returning the otg_device structure of a given struct device
++ *
++ * c.f. static dwc_otg_device_t *dwc_otg_drvdev(struct device *_dev)
++ */
++#ifdef LM_INTERFACE
++#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
++                struct lm_device *lm_dev = \
++                        container_of(_dev, struct lm_device, dev); \
++                _var = lm_get_drvdata(lm_dev); \
++        } while (0)
++
++#elif defined(PCI_INTERFACE)
++#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
++                _var = dev_get_drvdata(_dev); \
++        } while (0)
++
++#elif defined(PLATFORM_INTERFACE)
++#define DWC_OTG_GETDRVDEV(_var, _dev) do { \
++                struct platform_device *platform_dev = \
++                        container_of(_dev, struct platform_device, dev); \
++                _var = platform_get_drvdata(platform_dev); \
++        } while (0)
++#endif
++
++
++/**
++ * Helper macro returning the struct dev of the given struct os_dependent
++ *
++ * c.f. static struct device *dwc_otg_getdev(struct os_dependent *osdep)
++ */
++#ifdef LM_INTERFACE
++#define DWC_OTG_OS_GETDEV(_osdep) \
++        ((_osdep).lmdev == NULL? NULL: &(_osdep).lmdev->dev)
++#elif defined(PCI_INTERFACE)
++#define DWC_OTG_OS_GETDEV(_osdep) \
++        ((_osdep).pci_dev == NULL? NULL: &(_osdep).pci_dev->dev)
++#elif defined(PLATFORM_INTERFACE)
++#define DWC_OTG_OS_GETDEV(_osdep) \
++        ((_osdep).platformdev == NULL? NULL: &(_osdep).platformdev->dev)
++#endif
++
++
++
++
++#endif /* _DWC_OS_DEP_H_ */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd.c
+@@ -0,0 +1,2725 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.c $
++ * $Revision: #101 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_HOST_ONLY
++
++/** @file
++ * This file implements PCD Core. All code in this file is portable and doesn't
++ * use any OS specific functions.
++ * PCD Core provides Interface, defined in <code><dwc_otg_pcd_if.h></code>
++ * header file, which can be used to implement OS specific PCD interface.
++ *
++ * An important function of the PCD is managing interrupts generated
++ * by the DWC_otg controller. The implementation of the DWC_otg device
++ * mode interrupt service routines is in dwc_otg_pcd_intr.c.
++ *
++ * @todo Add Device Mode test modes (Test J mode, Test K mode, etc).
++ * @todo Does it work when the request size is greater than DEPTSIZ
++ * transfer size
++ *
++ */
++
++#include "dwc_otg_pcd.h"
++
++#ifdef DWC_UTE_CFI
++#include "dwc_otg_cfi.h"
++
++extern int init_cfi(cfiobject_t * cfiobj);
++#endif
++
++/**
++ * Choose endpoint from ep arrays using usb_ep structure.
++ */
++static dwc_otg_pcd_ep_t *get_ep_from_handle(dwc_otg_pcd_t * pcd, void *handle)
++{
++	int i;
++	if (pcd->ep0.priv == handle) {
++		return &pcd->ep0;
++	}
++	for (i = 0; i < MAX_EPS_CHANNELS - 1; i++) {
++		if (pcd->in_ep[i].priv == handle)
++			return &pcd->in_ep[i];
++		if (pcd->out_ep[i].priv == handle)
++			return &pcd->out_ep[i];
++	}
++
++	return NULL;
++}
++
++/**
++ * This function completes a request.  It call's the request call back.
++ */
++void dwc_otg_request_done(dwc_otg_pcd_ep_t * ep, dwc_otg_pcd_request_t * req,
++			  int32_t status)
++{
++	unsigned stopped = ep->stopped;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(ep %p req %p)\n", __func__, ep, req);
++	DWC_CIRCLEQ_REMOVE_INIT(&ep->queue, req, queue_entry);
++
++	/* don't modify queue heads during completion callback */
++	ep->stopped = 1;
++	/* spin_unlock/spin_lock now done in fops->complete() */
++	ep->pcd->fops->complete(ep->pcd, ep->priv, req->priv, status,
++				req->actual);
++
++	if (ep->pcd->request_pending > 0) {
++		--ep->pcd->request_pending;
++	}
++
++	ep->stopped = stopped;
++	DWC_FREE(req);
++}
++
++/**
++ * This function terminates all the requsts in the EP request queue.
++ */
++void dwc_otg_request_nuke(dwc_otg_pcd_ep_t * ep)
++{
++	dwc_otg_pcd_request_t *req;
++
++	ep->stopped = 1;
++
++	/* called with irqs blocked?? */
++	while (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		req = DWC_CIRCLEQ_FIRST(&ep->queue);
++		dwc_otg_request_done(ep, req, -DWC_E_SHUTDOWN);
++	}
++}
++
++void dwc_otg_pcd_start(dwc_otg_pcd_t * pcd,
++		       const struct dwc_otg_pcd_function_ops *fops)
++{
++	pcd->fops = fops;
++}
++
++/**
++ * PCD Callback function for initializing the PCD when switching to
++ * device mode.
++ *
++ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
++ */
++static int32_t dwc_otg_pcd_start_cb(void *p)
++{
++	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++
++	/*
++	 * Initialized the Core for Device mode.
++	 */
++	if (dwc_otg_is_device_mode(core_if)) {
++		dwc_otg_core_dev_init(core_if);
++		/* Set core_if's lock pointer to the pcd->lock */
++		core_if->lock = pcd->lock;
++	}
++	return 1;
++}
++
++/** CFI-specific buffer allocation function for EP */
++#ifdef DWC_UTE_CFI
++uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep, dwc_dma_t * addr,
++			      size_t buflen, int flags)
++{
++	dwc_otg_pcd_ep_t *ep;
++	ep = get_ep_from_handle(pcd, pep);
++	if (!ep) {
++		DWC_WARN("bad ep\n");
++		return -DWC_E_INVALID;
++	}
++
++	return pcd->cfi->ops.ep_alloc_buf(pcd->cfi, pcd, ep, addr, buflen,
++					  flags);
++}
++#else
++uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep, dwc_dma_t * addr,
++			      size_t buflen, int flags);
++#endif
++
++/**
++ * PCD Callback function for notifying the PCD when resuming from
++ * suspend.
++ *
++ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
++ */
++static int32_t dwc_otg_pcd_resume_cb(void *p)
++{
++	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
++
++	if (pcd->fops->resume) {
++		pcd->fops->resume(pcd);
++	}
++
++	/* Stop the SRP timeout timer. */
++	if ((GET_CORE_IF(pcd)->core_params->phy_type != DWC_PHY_TYPE_PARAM_FS)
++	    || (!GET_CORE_IF(pcd)->core_params->i2c_enable)) {
++		if (GET_CORE_IF(pcd)->srp_timer_started) {
++			GET_CORE_IF(pcd)->srp_timer_started = 0;
++			DWC_TIMER_CANCEL(GET_CORE_IF(pcd)->srp_timer);
++		}
++	}
++	return 1;
++}
++
++/**
++ * PCD Callback function for notifying the PCD device is suspended.
++ *
++ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
++ */
++static int32_t dwc_otg_pcd_suspend_cb(void *p)
++{
++	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
++
++	if (pcd->fops->suspend) {
++		DWC_SPINUNLOCK(pcd->lock);
++		pcd->fops->suspend(pcd);
++		DWC_SPINLOCK(pcd->lock);
++	}
++
++	return 1;
++}
++
++/**
++ * PCD Callback function for stopping the PCD when switching to Host
++ * mode.
++ *
++ * @param p void pointer to the <code>dwc_otg_pcd_t</code>
++ */
++static int32_t dwc_otg_pcd_stop_cb(void *p)
++{
++	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) p;
++	extern void dwc_otg_pcd_stop(dwc_otg_pcd_t * _pcd);
++
++	dwc_otg_pcd_stop(pcd);
++	return 1;
++}
++
++/**
++ * PCD Callback structure for handling mode switching.
++ */
++static dwc_otg_cil_callbacks_t pcd_callbacks = {
++	.start = dwc_otg_pcd_start_cb,
++	.stop = dwc_otg_pcd_stop_cb,
++	.suspend = dwc_otg_pcd_suspend_cb,
++	.resume_wakeup = dwc_otg_pcd_resume_cb,
++	.p = 0,			/* Set at registration */
++};
++
++/**
++ * This function allocates a DMA Descriptor chain for the Endpoint
++ * buffer to be used for a transfer to/from the specified endpoint.
++ */
++dwc_otg_dev_dma_desc_t *dwc_otg_ep_alloc_desc_chain(struct device *dev,
++						    dwc_dma_t * dma_desc_addr,
++						    uint32_t count)
++{
++	return DWC_DMA_ALLOC_ATOMIC(dev, count * sizeof(dwc_otg_dev_dma_desc_t),
++							dma_desc_addr);
++}
++
++/**
++ * This function frees a DMA Descriptor chain that was allocated by ep_alloc_desc.
++ */
++void dwc_otg_ep_free_desc_chain(struct device *dev,
++				dwc_otg_dev_dma_desc_t * desc_addr,
++				uint32_t dma_desc_addr, uint32_t count)
++{
++	DWC_DMA_FREE(dev, count * sizeof(dwc_otg_dev_dma_desc_t), desc_addr,
++		     dma_desc_addr);
++}
++
++#ifdef DWC_EN_ISOC
++
++/**
++ * This function initializes a descriptor chain for Isochronous transfer
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param dwc_ep The EP to start the transfer on.
++ *
++ */
++void dwc_otg_iso_ep_start_ddma_transfer(dwc_otg_core_if_t * core_if,
++					dwc_ep_t * dwc_ep)
++{
++
++	dsts_data_t dsts = {.d32 = 0 };
++	depctl_data_t depctl = {.d32 = 0 };
++	volatile uint32_t *addr;
++	int i, j;
++	uint32_t len;
++
++	if (dwc_ep->is_in)
++		dwc_ep->desc_cnt = dwc_ep->buf_proc_intrvl / dwc_ep->bInterval;
++	else
++		dwc_ep->desc_cnt =
++		    dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
++		    dwc_ep->bInterval;
++
++	/** Allocate descriptors for double buffering */
++	dwc_ep->iso_desc_addr =
++	    dwc_otg_ep_alloc_desc_chain(&dwc_ep->iso_dma_desc_addr,
++					dwc_ep->desc_cnt * 2);
++	if (dwc_ep->desc_addr) {
++		DWC_WARN("%s, can't allocate DMA descriptor chain\n", __func__);
++		return;
++	}
++
++	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++
++	/** ISO OUT EP */
++	if (dwc_ep->is_in == 0) {
++		dev_dma_desc_sts_t sts = {.d32 = 0 };
++		dwc_otg_dev_dma_desc_t *dma_desc = dwc_ep->iso_desc_addr;
++		dma_addr_t dma_ad;
++		uint32_t data_per_desc;
++		dwc_otg_dev_out_ep_regs_t *out_regs =
++		    core_if->dev_if->out_ep_regs[dwc_ep->num];
++		int offset;
++
++		addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
++		dma_ad = (dma_addr_t) DWC_READ_REG32(&(out_regs->doepdma));
++
++		/** Buffer 0 descriptors setup */
++		dma_ad = dwc_ep->dma_addr0;
++
++		sts.b_iso_out.bs = BS_HOST_READY;
++		sts.b_iso_out.rxsts = 0;
++		sts.b_iso_out.l = 0;
++		sts.b_iso_out.sp = 0;
++		sts.b_iso_out.ioc = 0;
++		sts.b_iso_out.pid = 0;
++		sts.b_iso_out.framenum = 0;
++
++		offset = 0;
++		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
++		     i += dwc_ep->pkt_per_frm) {
++
++			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
++				uint32_t len = (j + 1) * dwc_ep->maxpacket;
++				if (len > dwc_ep->data_per_frame)
++					data_per_desc =
++					    dwc_ep->data_per_frame -
++					    j * dwc_ep->maxpacket;
++				else
++					data_per_desc = dwc_ep->maxpacket;
++				len = data_per_desc % 4;
++				if (len)
++					data_per_desc += 4 - len;
++
++				sts.b_iso_out.rxbytes = data_per_desc;
++				dma_desc->buf = dma_ad;
++				dma_desc->status.d32 = sts.d32;
++
++				offset += data_per_desc;
++				dma_desc++;
++				dma_ad += data_per_desc;
++			}
++		}
++
++		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
++			uint32_t len = (j + 1) * dwc_ep->maxpacket;
++			if (len > dwc_ep->data_per_frame)
++				data_per_desc =
++				    dwc_ep->data_per_frame -
++				    j * dwc_ep->maxpacket;
++			else
++				data_per_desc = dwc_ep->maxpacket;
++			len = data_per_desc % 4;
++			if (len)
++				data_per_desc += 4 - len;
++			sts.b_iso_out.rxbytes = data_per_desc;
++			dma_desc->buf = dma_ad;
++			dma_desc->status.d32 = sts.d32;
++
++			offset += data_per_desc;
++			dma_desc++;
++			dma_ad += data_per_desc;
++		}
++
++		sts.b_iso_out.ioc = 1;
++		len = (j + 1) * dwc_ep->maxpacket;
++		if (len > dwc_ep->data_per_frame)
++			data_per_desc =
++			    dwc_ep->data_per_frame - j * dwc_ep->maxpacket;
++		else
++			data_per_desc = dwc_ep->maxpacket;
++		len = data_per_desc % 4;
++		if (len)
++			data_per_desc += 4 - len;
++		sts.b_iso_out.rxbytes = data_per_desc;
++
++		dma_desc->buf = dma_ad;
++		dma_desc->status.d32 = sts.d32;
++		dma_desc++;
++
++		/** Buffer 1 descriptors setup */
++		sts.b_iso_out.ioc = 0;
++		dma_ad = dwc_ep->dma_addr1;
++
++		offset = 0;
++		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
++		     i += dwc_ep->pkt_per_frm) {
++			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
++				uint32_t len = (j + 1) * dwc_ep->maxpacket;
++				if (len > dwc_ep->data_per_frame)
++					data_per_desc =
++					    dwc_ep->data_per_frame -
++					    j * dwc_ep->maxpacket;
++				else
++					data_per_desc = dwc_ep->maxpacket;
++				len = data_per_desc % 4;
++				if (len)
++					data_per_desc += 4 - len;
++
++				data_per_desc =
++				    sts.b_iso_out.rxbytes = data_per_desc;
++				dma_desc->buf = dma_ad;
++				dma_desc->status.d32 = sts.d32;
++
++				offset += data_per_desc;
++				dma_desc++;
++				dma_ad += data_per_desc;
++			}
++		}
++		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
++			data_per_desc =
++			    ((j + 1) * dwc_ep->maxpacket >
++			     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
++			    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
++			data_per_desc +=
++			    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
++			sts.b_iso_out.rxbytes = data_per_desc;
++			dma_desc->buf = dma_ad;
++			dma_desc->status.d32 = sts.d32;
++
++			offset += data_per_desc;
++			dma_desc++;
++			dma_ad += data_per_desc;
++		}
++
++		sts.b_iso_out.ioc = 1;
++		sts.b_iso_out.l = 1;
++		data_per_desc =
++		    ((j + 1) * dwc_ep->maxpacket >
++		     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
++		    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
++		data_per_desc +=
++		    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
++		sts.b_iso_out.rxbytes = data_per_desc;
++
++		dma_desc->buf = dma_ad;
++		dma_desc->status.d32 = sts.d32;
++
++		dwc_ep->next_frame = 0;
++
++		/** Write dma_ad into DOEPDMA register */
++		DWC_WRITE_REG32(&(out_regs->doepdma),
++				(uint32_t) dwc_ep->iso_dma_desc_addr);
++
++	}
++	/** ISO IN EP */
++	else {
++		dev_dma_desc_sts_t sts = {.d32 = 0 };
++		dwc_otg_dev_dma_desc_t *dma_desc = dwc_ep->iso_desc_addr;
++		dma_addr_t dma_ad;
++		dwc_otg_dev_in_ep_regs_t *in_regs =
++		    core_if->dev_if->in_ep_regs[dwc_ep->num];
++		unsigned int frmnumber;
++		fifosize_data_t txfifosize, rxfifosize;
++
++		txfifosize.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[dwc_ep->num]->
++				   dtxfsts);
++		rxfifosize.d32 =
++		    DWC_READ_REG32(&core_if->core_global_regs->grxfsiz);
++
++		addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
++
++		dma_ad = dwc_ep->dma_addr0;
++
++		dsts.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++
++		sts.b_iso_in.bs = BS_HOST_READY;
++		sts.b_iso_in.txsts = 0;
++		sts.b_iso_in.sp =
++		    (dwc_ep->data_per_frame % dwc_ep->maxpacket) ? 1 : 0;
++		sts.b_iso_in.ioc = 0;
++		sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
++
++		frmnumber = dwc_ep->next_frame;
++
++		sts.b_iso_in.framenum = frmnumber;
++		sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
++		sts.b_iso_in.l = 0;
++
++		/** Buffer 0 descriptors setup */
++		for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
++			dma_desc->buf = dma_ad;
++			dma_desc->status.d32 = sts.d32;
++			dma_desc++;
++
++			dma_ad += dwc_ep->data_per_frame;
++			sts.b_iso_in.framenum += dwc_ep->bInterval;
++		}
++
++		sts.b_iso_in.ioc = 1;
++		dma_desc->buf = dma_ad;
++		dma_desc->status.d32 = sts.d32;
++		++dma_desc;
++
++		/** Buffer 1 descriptors setup */
++		sts.b_iso_in.ioc = 0;
++		dma_ad = dwc_ep->dma_addr1;
++
++		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
++		     i += dwc_ep->pkt_per_frm) {
++			dma_desc->buf = dma_ad;
++			dma_desc->status.d32 = sts.d32;
++			dma_desc++;
++
++			dma_ad += dwc_ep->data_per_frame;
++			sts.b_iso_in.framenum += dwc_ep->bInterval;
++
++			sts.b_iso_in.ioc = 0;
++		}
++		sts.b_iso_in.ioc = 1;
++		sts.b_iso_in.l = 1;
++
++		dma_desc->buf = dma_ad;
++		dma_desc->status.d32 = sts.d32;
++
++		dwc_ep->next_frame = sts.b_iso_in.framenum + dwc_ep->bInterval;
++
++		/** Write dma_ad into diepdma register */
++		DWC_WRITE_REG32(&(in_regs->diepdma),
++				(uint32_t) dwc_ep->iso_dma_desc_addr);
++	}
++	/** Enable endpoint, clear nak  */
++	depctl.d32 = 0;
++	depctl.b.epena = 1;
++	depctl.b.usbactep = 1;
++	depctl.b.cnak = 1;
++
++	DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
++	depctl.d32 = DWC_READ_REG32(addr);
++}
++
++/**
++ * This function initializes a descriptor chain for Isochronous transfer
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ *
++ */
++void dwc_otg_iso_ep_start_buf_transfer(dwc_otg_core_if_t * core_if,
++				       dwc_ep_t * ep)
++{
++	depctl_data_t depctl = {.d32 = 0 };
++	volatile uint32_t *addr;
++
++	if (ep->is_in) {
++		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
++	} else {
++		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
++	}
++
++	if (core_if->dma_enable == 0 || core_if->dma_desc_enable != 0) {
++		return;
++	} else {
++		deptsiz_data_t deptsiz = {.d32 = 0 };
++
++		ep->xfer_len =
++		    ep->data_per_frame * ep->buf_proc_intrvl / ep->bInterval;
++		ep->pkt_cnt =
++		    (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
++		ep->xfer_count = 0;
++		ep->xfer_buff =
++		    (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
++		ep->dma_addr =
++		    (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
++
++		if (ep->is_in) {
++			/* Program the transfer size and packet count
++			 *      as follows: xfersize = N * maxpacket +
++			 *      short_packet pktcnt = N + (short_packet
++			 *      exist ? 1 : 0)
++			 */
++			deptsiz.b.mc = ep->pkt_per_frm;
++			deptsiz.b.xfersize = ep->xfer_len;
++			deptsiz.b.pktcnt =
++			    (ep->xfer_len - 1 + ep->maxpacket) / ep->maxpacket;
++			DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
++					dieptsiz, deptsiz.d32);
++
++			/* Write the DMA register */
++			DWC_WRITE_REG32(&
++					(core_if->dev_if->in_ep_regs[ep->num]->
++					 diepdma), (uint32_t) ep->dma_addr);
++
++		} else {
++			deptsiz.b.pktcnt =
++			    (ep->xfer_len + (ep->maxpacket - 1)) /
++			    ep->maxpacket;
++			deptsiz.b.xfersize = deptsiz.b.pktcnt * ep->maxpacket;
++
++			DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[ep->num]->
++					doeptsiz, deptsiz.d32);
++
++			/* Write the DMA register */
++			DWC_WRITE_REG32(&
++					(core_if->dev_if->out_ep_regs[ep->num]->
++					 doepdma), (uint32_t) ep->dma_addr);
++
++		}
++		/** Enable endpoint, clear nak  */
++		depctl.d32 = 0;
++		depctl.b.epena = 1;
++		depctl.b.cnak = 1;
++
++		DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
++	}
++}
++
++/**
++ * This function does the setup for a data transfer for an EP and
++ * starts the transfer. For an IN transfer, the packets will be
++ * loaded into the appropriate Tx FIFO in the ISR. For OUT transfers,
++ * the packets are unloaded from the Rx FIFO in the ISR.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ */
++
++static void dwc_otg_iso_ep_start_transfer(dwc_otg_core_if_t * core_if,
++					  dwc_ep_t * ep)
++{
++	if (core_if->dma_enable) {
++		if (core_if->dma_desc_enable) {
++			if (ep->is_in) {
++				ep->desc_cnt = ep->pkt_cnt / ep->pkt_per_frm;
++			} else {
++				ep->desc_cnt = ep->pkt_cnt;
++			}
++			dwc_otg_iso_ep_start_ddma_transfer(core_if, ep);
++		} else {
++			if (core_if->pti_enh_enable) {
++				dwc_otg_iso_ep_start_buf_transfer(core_if, ep);
++			} else {
++				ep->cur_pkt_addr =
++				    (ep->proc_buf_num) ? ep->xfer_buff1 : ep->
++				    xfer_buff0;
++				ep->cur_pkt_dma_addr =
++				    (ep->proc_buf_num) ? ep->dma_addr1 : ep->
++				    dma_addr0;
++				dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
++			}
++		}
++	} else {
++		ep->cur_pkt_addr =
++		    (ep->proc_buf_num) ? ep->xfer_buff1 : ep->xfer_buff0;
++		ep->cur_pkt_dma_addr =
++		    (ep->proc_buf_num) ? ep->dma_addr1 : ep->dma_addr0;
++		dwc_otg_iso_ep_start_frm_transfer(core_if, ep);
++	}
++}
++
++/**
++ * This function stops transfer for an EP and
++ * resets the ep's variables.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ */
++
++void dwc_otg_iso_ep_stop_transfer(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	depctl_data_t depctl = {.d32 = 0 };
++	volatile uint32_t *addr;
++
++	if (ep->is_in == 1) {
++		addr = &core_if->dev_if->in_ep_regs[ep->num]->diepctl;
++	} else {
++		addr = &core_if->dev_if->out_ep_regs[ep->num]->doepctl;
++	}
++
++	/* disable the ep */
++	depctl.d32 = DWC_READ_REG32(addr);
++
++	depctl.b.epdis = 1;
++	depctl.b.snak = 1;
++
++	DWC_WRITE_REG32(addr, depctl.d32);
++
++	if (core_if->dma_desc_enable &&
++	    ep->iso_desc_addr && ep->iso_dma_desc_addr) {
++		dwc_otg_ep_free_desc_chain(ep->iso_desc_addr,
++					   ep->iso_dma_desc_addr,
++					   ep->desc_cnt * 2);
++	}
++
++	/* reset varibales */
++	ep->dma_addr0 = 0;
++	ep->dma_addr1 = 0;
++	ep->xfer_buff0 = 0;
++	ep->xfer_buff1 = 0;
++	ep->data_per_frame = 0;
++	ep->data_pattern_frame = 0;
++	ep->sync_frame = 0;
++	ep->buf_proc_intrvl = 0;
++	ep->bInterval = 0;
++	ep->proc_buf_num = 0;
++	ep->pkt_per_frm = 0;
++	ep->pkt_per_frm = 0;
++	ep->desc_cnt = 0;
++	ep->iso_desc_addr = 0;
++	ep->iso_dma_desc_addr = 0;
++}
++
++int dwc_otg_pcd_iso_ep_start(dwc_otg_pcd_t * pcd, void *ep_handle,
++			     uint8_t * buf0, uint8_t * buf1, dwc_dma_t dma0,
++			     dwc_dma_t dma1, int sync_frame, int dp_frame,
++			     int data_per_frame, int start_frame,
++			     int buf_proc_intrvl, void *req_handle,
++			     int atomic_alloc)
++{
++	dwc_otg_pcd_ep_t *ep;
++	dwc_irqflags_t flags = 0;
++	dwc_ep_t *dwc_ep;
++	int32_t frm_data;
++	dsts_data_t dsts;
++	dwc_otg_core_if_t *core_if;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++
++	if (!ep || !ep->desc || ep->dwc_ep.num == 0) {
++		DWC_WARN("bad ep\n");
++		return -DWC_E_INVALID;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++	core_if = GET_CORE_IF(pcd);
++	dwc_ep = &ep->dwc_ep;
++
++	if (ep->iso_req_handle) {
++		DWC_WARN("ISO request in progress\n");
++	}
++
++	dwc_ep->dma_addr0 = dma0;
++	dwc_ep->dma_addr1 = dma1;
++
++	dwc_ep->xfer_buff0 = buf0;
++	dwc_ep->xfer_buff1 = buf1;
++
++	dwc_ep->data_per_frame = data_per_frame;
++
++	/** @todo - pattern data support is to be implemented in the future */
++	dwc_ep->data_pattern_frame = dp_frame;
++	dwc_ep->sync_frame = sync_frame;
++
++	dwc_ep->buf_proc_intrvl = buf_proc_intrvl;
++
++	dwc_ep->bInterval = 1 << (ep->desc->bInterval - 1);
++
++	dwc_ep->proc_buf_num = 0;
++
++	dwc_ep->pkt_per_frm = 0;
++	frm_data = ep->dwc_ep.data_per_frame;
++	while (frm_data > 0) {
++		dwc_ep->pkt_per_frm++;
++		frm_data -= ep->dwc_ep.maxpacket;
++	}
++
++	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++
++	if (start_frame == -1) {
++		dwc_ep->next_frame = dsts.b.soffn + 1;
++		if (dwc_ep->bInterval != 1) {
++			dwc_ep->next_frame =
++			    dwc_ep->next_frame + (dwc_ep->bInterval - 1 -
++						  dwc_ep->next_frame %
++						  dwc_ep->bInterval);
++		}
++	} else {
++		dwc_ep->next_frame = start_frame;
++	}
++
++	if (!core_if->pti_enh_enable) {
++		dwc_ep->pkt_cnt =
++		    dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
++		    dwc_ep->bInterval;
++	} else {
++		dwc_ep->pkt_cnt =
++		    (dwc_ep->data_per_frame *
++		     (dwc_ep->buf_proc_intrvl / dwc_ep->bInterval)
++		     - 1 + dwc_ep->maxpacket) / dwc_ep->maxpacket;
++	}
++
++	if (core_if->dma_desc_enable) {
++		dwc_ep->desc_cnt =
++		    dwc_ep->buf_proc_intrvl * dwc_ep->pkt_per_frm /
++		    dwc_ep->bInterval;
++	}
++
++	if (atomic_alloc) {
++		dwc_ep->pkt_info =
++		    DWC_ALLOC_ATOMIC(sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
++	} else {
++		dwc_ep->pkt_info =
++		    DWC_ALLOC(sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
++	}
++	if (!dwc_ep->pkt_info) {
++		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++		return -DWC_E_NO_MEMORY;
++	}
++	if (core_if->pti_enh_enable) {
++		dwc_memset(dwc_ep->pkt_info, 0,
++			   sizeof(iso_pkt_info_t) * dwc_ep->pkt_cnt);
++	}
++
++	dwc_ep->cur_pkt = 0;
++	ep->iso_req_handle = req_handle;
++
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++	dwc_otg_iso_ep_start_transfer(core_if, dwc_ep);
++	return 0;
++}
++
++int dwc_otg_pcd_iso_ep_stop(dwc_otg_pcd_t * pcd, void *ep_handle,
++			    void *req_handle)
++{
++	dwc_irqflags_t flags = 0;
++	dwc_otg_pcd_ep_t *ep;
++	dwc_ep_t *dwc_ep;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++	if (!ep || !ep->desc || ep->dwc_ep.num == 0) {
++		DWC_WARN("bad ep\n");
++		return -DWC_E_INVALID;
++	}
++	dwc_ep = &ep->dwc_ep;
++
++	dwc_otg_iso_ep_stop_transfer(GET_CORE_IF(pcd), dwc_ep);
++
++	DWC_FREE(dwc_ep->pkt_info);
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++	if (ep->iso_req_handle != req_handle) {
++		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++		return -DWC_E_INVALID;
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++	ep->iso_req_handle = 0;
++	return 0;
++}
++
++/**
++ * This function is used for perodical data exchnage between PCD and gadget drivers.
++ * for Isochronous EPs
++ *
++ *	- Every time a sync period completes this function is called to
++ *	  perform data exchange between PCD and gadget
++ */
++void dwc_otg_iso_buffer_done(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep,
++			     void *req_handle)
++{
++	int i;
++	dwc_ep_t *dwc_ep;
++
++	dwc_ep = &ep->dwc_ep;
++
++	DWC_SPINUNLOCK(ep->pcd->lock);
++	pcd->fops->isoc_complete(pcd, ep->priv, ep->iso_req_handle,
++				 dwc_ep->proc_buf_num ^ 0x1);
++	DWC_SPINLOCK(ep->pcd->lock);
++
++	for (i = 0; i < dwc_ep->pkt_cnt; ++i) {
++		dwc_ep->pkt_info[i].status = 0;
++		dwc_ep->pkt_info[i].offset = 0;
++		dwc_ep->pkt_info[i].length = 0;
++	}
++}
++
++int dwc_otg_pcd_get_iso_packet_count(dwc_otg_pcd_t * pcd, void *ep_handle,
++				     void *iso_req_handle)
++{
++	dwc_otg_pcd_ep_t *ep;
++	dwc_ep_t *dwc_ep;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++	if (!ep->desc || ep->dwc_ep.num == 0) {
++		DWC_WARN("bad ep\n");
++		return -DWC_E_INVALID;
++	}
++	dwc_ep = &ep->dwc_ep;
++
++	return dwc_ep->pkt_cnt;
++}
++
++void dwc_otg_pcd_get_iso_packet_params(dwc_otg_pcd_t * pcd, void *ep_handle,
++				       void *iso_req_handle, int packet,
++				       int *status, int *actual, int *offset)
++{
++	dwc_otg_pcd_ep_t *ep;
++	dwc_ep_t *dwc_ep;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++	if (!ep)
++		DWC_WARN("bad ep\n");
++
++	dwc_ep = &ep->dwc_ep;
++
++	*status = dwc_ep->pkt_info[packet].status;
++	*actual = dwc_ep->pkt_info[packet].length;
++	*offset = dwc_ep->pkt_info[packet].offset;
++}
++
++#endif /* DWC_EN_ISOC */
++
++static void dwc_otg_pcd_init_ep(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * pcd_ep,
++				uint32_t is_in, uint32_t ep_num)
++{
++	/* Init EP structure */
++	pcd_ep->desc = 0;
++	pcd_ep->pcd = pcd;
++	pcd_ep->stopped = 1;
++	pcd_ep->queue_sof = 0;
++
++	/* Init DWC ep structure */
++	pcd_ep->dwc_ep.is_in = is_in;
++	pcd_ep->dwc_ep.num = ep_num;
++	pcd_ep->dwc_ep.active = 0;
++	pcd_ep->dwc_ep.tx_fifo_num = 0;
++	/* Control until ep is actvated */
++	pcd_ep->dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
++	pcd_ep->dwc_ep.maxpacket = MAX_PACKET_SIZE;
++	pcd_ep->dwc_ep.dma_addr = 0;
++	pcd_ep->dwc_ep.start_xfer_buff = 0;
++	pcd_ep->dwc_ep.xfer_buff = 0;
++	pcd_ep->dwc_ep.xfer_len = 0;
++	pcd_ep->dwc_ep.xfer_count = 0;
++	pcd_ep->dwc_ep.sent_zlp = 0;
++	pcd_ep->dwc_ep.total_len = 0;
++	pcd_ep->dwc_ep.desc_addr = 0;
++	pcd_ep->dwc_ep.dma_desc_addr = 0;
++	DWC_CIRCLEQ_INIT(&pcd_ep->queue);
++}
++
++/**
++ * Initialize ep's
++ */
++static void dwc_otg_pcd_reinit(dwc_otg_pcd_t * pcd)
++{
++	int i;
++	uint32_t hwcfg1;
++	dwc_otg_pcd_ep_t *ep;
++	int in_ep_cntr, out_ep_cntr;
++	uint32_t num_in_eps = (GET_CORE_IF(pcd))->dev_if->num_in_eps;
++	uint32_t num_out_eps = (GET_CORE_IF(pcd))->dev_if->num_out_eps;
++
++	/**
++	 * Initialize the EP0 structure.
++	 */
++	ep = &pcd->ep0;
++	dwc_otg_pcd_init_ep(pcd, ep, 0, 0);
++
++	in_ep_cntr = 0;
++	hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 3;
++	for (i = 1; in_ep_cntr < num_in_eps; i++) {
++		if ((hwcfg1 & 0x1) == 0) {
++			dwc_otg_pcd_ep_t *ep = &pcd->in_ep[in_ep_cntr];
++			in_ep_cntr++;
++			/**
++			 * @todo NGS: Add direction to EP, based on contents
++			 * of HWCFG1.  Need a copy of HWCFG1 in pcd structure?
++			 * sprintf(";r
++			 */
++			dwc_otg_pcd_init_ep(pcd, ep, 1 /* IN */ , i);
++
++			DWC_CIRCLEQ_INIT(&ep->queue);
++		}
++		hwcfg1 >>= 2;
++	}
++
++	out_ep_cntr = 0;
++	hwcfg1 = (GET_CORE_IF(pcd))->hwcfg1.d32 >> 2;
++	for (i = 1; out_ep_cntr < num_out_eps; i++) {
++		if ((hwcfg1 & 0x1) == 0) {
++			dwc_otg_pcd_ep_t *ep = &pcd->out_ep[out_ep_cntr];
++			out_ep_cntr++;
++			/**
++			 * @todo NGS: Add direction to EP, based on contents
++			 * of HWCFG1.  Need a copy of HWCFG1 in pcd structure?
++			 * sprintf(";r
++			 */
++			dwc_otg_pcd_init_ep(pcd, ep, 0 /* OUT */ , i);
++			DWC_CIRCLEQ_INIT(&ep->queue);
++		}
++		hwcfg1 >>= 2;
++	}
++
++	pcd->ep0state = EP0_DISCONNECT;
++	pcd->ep0.dwc_ep.maxpacket = MAX_EP0_SIZE;
++	pcd->ep0.dwc_ep.type = DWC_OTG_EP_TYPE_CONTROL;
++}
++
++/**
++ * This function is called when the SRP timer expires. The SRP should
++ * complete within 6 seconds.
++ */
++static void srp_timeout(void *ptr)
++{
++	gotgctl_data_t gotgctl;
++	dwc_otg_core_if_t *core_if = (dwc_otg_core_if_t *) ptr;
++	volatile uint32_t *addr = &core_if->core_global_regs->gotgctl;
++
++	gotgctl.d32 = DWC_READ_REG32(addr);
++
++	core_if->srp_timer_started = 0;
++
++	if (core_if->adp_enable) {
++		if (gotgctl.b.bsesvld == 0) {
++			gpwrdn_data_t gpwrdn = {.d32 = 0 };
++			DWC_PRINTF("SRP Timeout BSESSVLD = 0\n");
++			/* Power off the core */
++			if (core_if->power_down == 2) {
++				gpwrdn.b.pwrdnswtch = 1;
++				DWC_MODIFY_REG32(&core_if->
++						 core_global_regs->gpwrdn,
++						 gpwrdn.d32, 0);
++			}
++
++			gpwrdn.d32 = 0;
++			gpwrdn.b.pmuintsel = 1;
++			gpwrdn.b.pmuactv = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gpwrdn, 0,
++					 gpwrdn.d32);
++			dwc_otg_adp_probe_start(core_if);
++		} else {
++			DWC_PRINTF("SRP Timeout BSESSVLD = 1\n");
++			core_if->op_state = B_PERIPHERAL;
++			dwc_otg_core_init(core_if);
++			dwc_otg_enable_global_interrupts(core_if);
++			cil_pcd_start(core_if);
++		}
++	}
++
++	if ((core_if->core_params->phy_type == DWC_PHY_TYPE_PARAM_FS) &&
++	    (core_if->core_params->i2c_enable)) {
++		DWC_PRINTF("SRP Timeout\n");
++
++		if ((core_if->srp_success) && (gotgctl.b.bsesvld)) {
++			if (core_if->pcd_cb && core_if->pcd_cb->resume_wakeup) {
++				core_if->pcd_cb->resume_wakeup(core_if->pcd_cb->p);
++			}
++
++			/* Clear Session Request */
++			gotgctl.d32 = 0;
++			gotgctl.b.sesreq = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gotgctl,
++					 gotgctl.d32, 0);
++
++			core_if->srp_success = 0;
++		} else {
++			__DWC_ERROR("Device not connected/responding\n");
++			gotgctl.b.sesreq = 0;
++			DWC_WRITE_REG32(addr, gotgctl.d32);
++		}
++	} else if (gotgctl.b.sesreq) {
++		DWC_PRINTF("SRP Timeout\n");
++
++		__DWC_ERROR("Device not connected/responding\n");
++		gotgctl.b.sesreq = 0;
++		DWC_WRITE_REG32(addr, gotgctl.d32);
++	} else {
++		DWC_PRINTF(" SRP GOTGCTL=%0x\n", gotgctl.d32);
++	}
++}
++
++/**
++ * Tasklet
++ *
++ */
++extern void start_next_request(dwc_otg_pcd_ep_t * ep);
++
++static void start_xfer_tasklet_func(void *data)
++{
++	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) data;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++
++	int i;
++	depctl_data_t diepctl;
++
++	DWC_DEBUGPL(DBG_PCDV, "Start xfer tasklet\n");
++
++	diepctl.d32 = DWC_READ_REG32(&core_if->dev_if->in_ep_regs[0]->diepctl);
++
++	if (pcd->ep0.queue_sof) {
++		pcd->ep0.queue_sof = 0;
++		start_next_request(&pcd->ep0);
++		// break;
++	}
++
++	for (i = 0; i < core_if->dev_if->num_in_eps; i++) {
++		depctl_data_t diepctl;
++		diepctl.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[i]->diepctl);
++
++		if (pcd->in_ep[i].queue_sof) {
++			pcd->in_ep[i].queue_sof = 0;
++			start_next_request(&pcd->in_ep[i]);
++			// break;
++		}
++	}
++
++	return;
++}
++
++/**
++ * This function initialized the PCD portion of the driver.
++ *
++ */
++dwc_otg_pcd_t *dwc_otg_pcd_init(dwc_otg_device_t *otg_dev)
++{
++	struct device *dev = &otg_dev->os_dep.platformdev->dev;
++	dwc_otg_core_if_t *core_if = otg_dev->core_if;
++	dwc_otg_pcd_t *pcd = NULL;
++	dwc_otg_dev_if_t *dev_if;
++	int i;
++
++	/*
++	 * Allocate PCD structure
++	 */
++	pcd = DWC_ALLOC(sizeof(dwc_otg_pcd_t));
++
++	if (pcd == NULL) {
++		return NULL;
++	}
++
++#if (defined(DWC_LINUX) && defined(CONFIG_DEBUG_SPINLOCK))
++	DWC_SPINLOCK_ALLOC_LINUX_DEBUG(pcd->lock);
++#else
++	pcd->lock = DWC_SPINLOCK_ALLOC();
++#endif
++        DWC_DEBUGPL(DBG_HCDV, "Init of PCD %p given core_if %p\n",
++                    pcd, core_if);//GRAYG
++	if (!pcd->lock) {
++		DWC_ERROR("Could not allocate lock for pcd");
++		DWC_FREE(pcd);
++		return NULL;
++	}
++	/* Set core_if's lock pointer to hcd->lock */
++	core_if->lock = pcd->lock;
++	pcd->core_if = core_if;
++
++	dev_if = core_if->dev_if;
++	dev_if->isoc_ep = NULL;
++
++	if (core_if->hwcfg4.b.ded_fifo_en) {
++		DWC_PRINTF("Dedicated Tx FIFOs mode\n");
++	} else {
++		DWC_PRINTF("Shared Tx FIFO mode\n");
++	}
++
++	/*
++	 * Initialized the Core for Device mode here if there is nod ADP support.
++	 * Otherwise it will be done later in dwc_otg_adp_start routine.
++	 */
++	if (dwc_otg_is_device_mode(core_if) /*&& !core_if->adp_enable*/) {
++		dwc_otg_core_dev_init(core_if);
++	}
++
++	/*
++	 * Register the PCD Callbacks.
++	 */
++	dwc_otg_cil_register_pcd_callbacks(core_if, &pcd_callbacks, pcd);
++
++	/*
++	 * Initialize the DMA buffer for SETUP packets
++	 */
++	if (GET_CORE_IF(pcd)->dma_enable) {
++		pcd->setup_pkt =
++		    DWC_DMA_ALLOC(dev, sizeof(*pcd->setup_pkt) * 5,
++				  &pcd->setup_pkt_dma_handle);
++		if (pcd->setup_pkt == NULL) {
++			DWC_FREE(pcd);
++			return NULL;
++		}
++
++		pcd->status_buf =
++		    DWC_DMA_ALLOC(dev, sizeof(uint16_t),
++				  &pcd->status_buf_dma_handle);
++		if (pcd->status_buf == NULL) {
++			DWC_DMA_FREE(dev, sizeof(*pcd->setup_pkt) * 5,
++				     pcd->setup_pkt, pcd->setup_pkt_dma_handle);
++			DWC_FREE(pcd);
++			return NULL;
++		}
++
++		if (GET_CORE_IF(pcd)->dma_desc_enable) {
++			dev_if->setup_desc_addr[0] =
++			    dwc_otg_ep_alloc_desc_chain(dev,
++				&dev_if->dma_setup_desc_addr[0], 1);
++			dev_if->setup_desc_addr[1] =
++			    dwc_otg_ep_alloc_desc_chain(dev,
++				&dev_if->dma_setup_desc_addr[1], 1);
++			dev_if->in_desc_addr =
++			    dwc_otg_ep_alloc_desc_chain(dev,
++				&dev_if->dma_in_desc_addr, 1);
++			dev_if->out_desc_addr =
++			    dwc_otg_ep_alloc_desc_chain(dev,
++				&dev_if->dma_out_desc_addr, 1);
++			pcd->data_terminated = 0;
++
++			if (dev_if->setup_desc_addr[0] == 0
++			    || dev_if->setup_desc_addr[1] == 0
++			    || dev_if->in_desc_addr == 0
++			    || dev_if->out_desc_addr == 0) {
++
++				if (dev_if->out_desc_addr)
++					dwc_otg_ep_free_desc_chain(dev,
++					     dev_if->out_desc_addr,
++					     dev_if->dma_out_desc_addr, 1);
++				if (dev_if->in_desc_addr)
++					dwc_otg_ep_free_desc_chain(dev,
++					     dev_if->in_desc_addr,
++					     dev_if->dma_in_desc_addr, 1);
++				if (dev_if->setup_desc_addr[1])
++					dwc_otg_ep_free_desc_chain(dev,
++					     dev_if->setup_desc_addr[1],
++					     dev_if->dma_setup_desc_addr[1], 1);
++				if (dev_if->setup_desc_addr[0])
++					dwc_otg_ep_free_desc_chain(dev,
++					     dev_if->setup_desc_addr[0],
++					     dev_if->dma_setup_desc_addr[0], 1);
++
++				DWC_DMA_FREE(dev, sizeof(*pcd->setup_pkt) * 5,
++					     pcd->setup_pkt,
++					     pcd->setup_pkt_dma_handle);
++				DWC_DMA_FREE(dev, sizeof(*pcd->status_buf),
++					     pcd->status_buf,
++					     pcd->status_buf_dma_handle);
++
++				DWC_FREE(pcd);
++
++				return NULL;
++			}
++		}
++	} else {
++		pcd->setup_pkt = DWC_ALLOC(sizeof(*pcd->setup_pkt) * 5);
++		if (pcd->setup_pkt == NULL) {
++			DWC_FREE(pcd);
++			return NULL;
++		}
++
++		pcd->status_buf = DWC_ALLOC(sizeof(uint16_t));
++		if (pcd->status_buf == NULL) {
++			DWC_FREE(pcd->setup_pkt);
++			DWC_FREE(pcd);
++			return NULL;
++		}
++	}
++
++	dwc_otg_pcd_reinit(pcd);
++
++	/* Allocate the cfi object for the PCD */
++#ifdef DWC_UTE_CFI
++	pcd->cfi = DWC_ALLOC(sizeof(cfiobject_t));
++	if (NULL == pcd->cfi)
++		goto fail;
++	if (init_cfi(pcd->cfi)) {
++		CFI_INFO("%s: Failed to init the CFI object\n", __func__);
++		goto fail;
++	}
++#endif
++
++	/* Initialize tasklets */
++	pcd->start_xfer_tasklet = DWC_TASK_ALLOC("xfer_tasklet",
++						 start_xfer_tasklet_func, pcd);
++	pcd->test_mode_tasklet = DWC_TASK_ALLOC("test_mode_tasklet",
++						do_test_mode, pcd);
++
++	/* Initialize SRP timer */
++	core_if->srp_timer = DWC_TIMER_ALLOC("SRP TIMER", srp_timeout, core_if);
++
++	if (core_if->core_params->dev_out_nak) {
++		/**
++		* Initialize xfer timeout timer. Implemented for
++		* 2.93a feature "Device DDMA OUT NAK Enhancement"
++		*/
++		for(i = 0; i < MAX_EPS_CHANNELS; i++) {
++			pcd->core_if->ep_xfer_timer[i] =
++				DWC_TIMER_ALLOC("ep timer", ep_xfer_timeout,
++				&pcd->core_if->ep_xfer_info[i]);
++		}
++	}
++
++	return pcd;
++#ifdef DWC_UTE_CFI
++fail:
++#endif
++	if (pcd->setup_pkt)
++		DWC_FREE(pcd->setup_pkt);
++	if (pcd->status_buf)
++		DWC_FREE(pcd->status_buf);
++#ifdef DWC_UTE_CFI
++	if (pcd->cfi)
++		DWC_FREE(pcd->cfi);
++#endif
++	if (pcd)
++		DWC_FREE(pcd);
++	return NULL;
++
++}
++
++/**
++ * Remove PCD specific data
++ */
++void dwc_otg_pcd_remove(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
++	struct device *dev = dwc_otg_pcd_to_dev(pcd);
++	int i;
++
++	if (pcd->core_if->core_params->dev_out_nak) {
++		for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++			DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[i]);
++			pcd->core_if->ep_xfer_info[i].state = 0;
++		}
++	}
++
++	if (GET_CORE_IF(pcd)->dma_enable) {
++		DWC_DMA_FREE(dev, sizeof(*pcd->setup_pkt) * 5, pcd->setup_pkt,
++			     pcd->setup_pkt_dma_handle);
++		DWC_DMA_FREE(dev, sizeof(uint16_t), pcd->status_buf,
++			     pcd->status_buf_dma_handle);
++		if (GET_CORE_IF(pcd)->dma_desc_enable) {
++			dwc_otg_ep_free_desc_chain(dev,
++						   dev_if->setup_desc_addr[0],
++						   dev_if->dma_setup_desc_addr
++						   [0], 1);
++			dwc_otg_ep_free_desc_chain(dev,
++						   dev_if->setup_desc_addr[1],
++						   dev_if->dma_setup_desc_addr
++						   [1], 1);
++			dwc_otg_ep_free_desc_chain(dev,
++						   dev_if->in_desc_addr,
++						   dev_if->dma_in_desc_addr, 1);
++			dwc_otg_ep_free_desc_chain(dev,
++						   dev_if->out_desc_addr,
++						   dev_if->dma_out_desc_addr,
++						   1);
++		}
++	} else {
++		DWC_FREE(pcd->setup_pkt);
++		DWC_FREE(pcd->status_buf);
++	}
++	DWC_SPINLOCK_FREE(pcd->lock);
++	/* Set core_if's lock pointer to NULL */
++	pcd->core_if->lock = NULL;
++
++	DWC_TASK_FREE(pcd->start_xfer_tasklet);
++	DWC_TASK_FREE(pcd->test_mode_tasklet);
++	if (pcd->core_if->core_params->dev_out_nak) {
++		for (i = 0; i < MAX_EPS_CHANNELS; i++) {
++			if (pcd->core_if->ep_xfer_timer[i]) {
++					DWC_TIMER_FREE(pcd->core_if->ep_xfer_timer[i]);
++			}
++		}
++	}
++
++/* Release the CFI object's dynamic memory */
++#ifdef DWC_UTE_CFI
++	if (pcd->cfi->ops.release) {
++		pcd->cfi->ops.release(pcd->cfi);
++	}
++#endif
++
++	DWC_FREE(pcd);
++}
++
++/**
++ * Returns whether registered pcd is dual speed or not
++ */
++uint32_t dwc_otg_pcd_is_dualspeed(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++
++	if ((core_if->core_params->speed == DWC_SPEED_PARAM_FULL) ||
++	    ((core_if->hwcfg2.b.hs_phy_type == 2) &&
++	     (core_if->hwcfg2.b.fs_phy_type == 1) &&
++	     (core_if->core_params->ulpi_fs_ls))) {
++		return 0;
++	}
++
++	return 1;
++}
++
++/**
++ * Returns whether registered pcd is OTG capable or not
++ */
++uint32_t dwc_otg_pcd_is_otg(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	gusbcfg_data_t usbcfg = {.d32 = 0 };
++
++	usbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gusbcfg);
++	if (!usbcfg.b.srpcap || !usbcfg.b.hnpcap) {
++		return 0;
++	}
++
++	return 1;
++}
++
++/**
++ * This function assigns periodic Tx FIFO to an periodic EP
++ * in shared Tx FIFO mode
++ */
++static uint32_t assign_tx_fifo(dwc_otg_core_if_t * core_if)
++{
++	uint32_t TxMsk = 1;
++	int i;
++
++	for (i = 0; i < core_if->hwcfg4.b.num_in_eps; ++i) {
++		if ((TxMsk & core_if->tx_msk) == 0) {
++			core_if->tx_msk |= TxMsk;
++			return i + 1;
++		}
++		TxMsk <<= 1;
++	}
++	return 0;
++}
++
++/**
++ * This function assigns periodic Tx FIFO to an periodic EP
++ * in shared Tx FIFO mode
++ */
++static uint32_t assign_perio_tx_fifo(dwc_otg_core_if_t * core_if)
++{
++	uint32_t PerTxMsk = 1;
++	int i;
++	for (i = 0; i < core_if->hwcfg4.b.num_dev_perio_in_ep; ++i) {
++		if ((PerTxMsk & core_if->p_tx_msk) == 0) {
++			core_if->p_tx_msk |= PerTxMsk;
++			return i + 1;
++		}
++		PerTxMsk <<= 1;
++	}
++	return 0;
++}
++
++/**
++ * This function releases periodic Tx FIFO
++ * in shared Tx FIFO mode
++ */
++static void release_perio_tx_fifo(dwc_otg_core_if_t * core_if,
++				  uint32_t fifo_num)
++{
++	core_if->p_tx_msk =
++	    (core_if->p_tx_msk & (1 << (fifo_num - 1))) ^ core_if->p_tx_msk;
++}
++
++/**
++ * This function releases periodic Tx FIFO
++ * in shared Tx FIFO mode
++ */
++static void release_tx_fifo(dwc_otg_core_if_t * core_if, uint32_t fifo_num)
++{
++	core_if->tx_msk =
++	    (core_if->tx_msk & (1 << (fifo_num - 1))) ^ core_if->tx_msk;
++}
++
++/**
++ * This function is being called from gadget
++ * to enable PCD endpoint.
++ */
++int dwc_otg_pcd_ep_enable(dwc_otg_pcd_t * pcd,
++			  const uint8_t * ep_desc, void *usb_ep)
++{
++	int num, dir;
++	dwc_otg_pcd_ep_t *ep = NULL;
++	const usb_endpoint_descriptor_t *desc;
++	dwc_irqflags_t flags;
++	fifosize_data_t dptxfsiz = {.d32 = 0 };
++	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
++	gdfifocfg_data_t gdfifocfgbase = {.d32 = 0 };
++	int retval = 0;
++	int i, epcount;
++	struct device *dev = dwc_otg_pcd_to_dev(pcd);
++
++	desc = (const usb_endpoint_descriptor_t *)ep_desc;
++
++	if (!desc) {
++		pcd->ep0.priv = usb_ep;
++		ep = &pcd->ep0;
++		retval = -DWC_E_INVALID;
++		goto out;
++	}
++
++	num = UE_GET_ADDR(desc->bEndpointAddress);
++	dir = UE_GET_DIR(desc->bEndpointAddress);
++
++	if (!desc->wMaxPacketSize) {
++		DWC_WARN("bad maxpacketsize\n");
++		retval = -DWC_E_INVALID;
++		goto out;
++	}
++
++	if (dir == UE_DIR_IN) {
++		epcount = pcd->core_if->dev_if->num_in_eps;
++		for (i = 0; i < epcount; i++) {
++			if (num == pcd->in_ep[i].dwc_ep.num) {
++				ep = &pcd->in_ep[i];
++				break;
++			}
++		}
++	} else {
++		epcount = pcd->core_if->dev_if->num_out_eps;
++		for (i = 0; i < epcount; i++) {
++			if (num == pcd->out_ep[i].dwc_ep.num) {
++				ep = &pcd->out_ep[i];
++				break;
++			}
++		}
++	}
++
++	if (!ep) {
++		DWC_WARN("bad address\n");
++		retval = -DWC_E_INVALID;
++		goto out;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++
++	ep->desc = desc;
++	ep->priv = usb_ep;
++
++	/*
++	 * Activate the EP
++	 */
++	ep->stopped = 0;
++
++	ep->dwc_ep.is_in = (dir == UE_DIR_IN);
++	ep->dwc_ep.maxpacket = UGETW(desc->wMaxPacketSize);
++
++	ep->dwc_ep.type = desc->bmAttributes & UE_XFERTYPE;
++
++	if (ep->dwc_ep.is_in) {
++		if (!GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
++			ep->dwc_ep.tx_fifo_num = 0;
++
++			if (ep->dwc_ep.type == UE_ISOCHRONOUS) {
++				/*
++				 * if ISOC EP then assign a Periodic Tx FIFO.
++				 */
++				ep->dwc_ep.tx_fifo_num =
++				    assign_perio_tx_fifo(GET_CORE_IF(pcd));
++			}
++		} else {
++			/*
++			 * if Dedicated FIFOs mode is on then assign a Tx FIFO.
++			 */
++			ep->dwc_ep.tx_fifo_num =
++			    assign_tx_fifo(GET_CORE_IF(pcd));
++		}
++
++		/* Calculating EP info controller base address */
++		if (ep->dwc_ep.tx_fifo_num
++		    && GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
++			gdfifocfg.d32 =
++			    DWC_READ_REG32(&GET_CORE_IF(pcd)->
++					   core_global_regs->gdfifocfg);
++			gdfifocfgbase.d32 = gdfifocfg.d32 >> 16;
++			dptxfsiz.d32 =
++			    (DWC_READ_REG32
++			     (&GET_CORE_IF(pcd)->core_global_regs->
++			      dtxfsiz[ep->dwc_ep.tx_fifo_num - 1]) >> 16);
++			gdfifocfg.b.epinfobase =
++			    gdfifocfgbase.d32 + dptxfsiz.d32;
++			if (GET_CORE_IF(pcd)->snpsid <= OTG_CORE_REV_2_94a) {
++				DWC_WRITE_REG32(&GET_CORE_IF(pcd)->
++						core_global_regs->gdfifocfg,
++						gdfifocfg.d32);
++			}
++		}
++	}
++	/* Set initial data PID. */
++	if (ep->dwc_ep.type == UE_BULK) {
++		ep->dwc_ep.data_pid_start = 0;
++	}
++
++	/* Alloc DMA Descriptors */
++	if (GET_CORE_IF(pcd)->dma_desc_enable) {
++#ifndef DWC_UTE_PER_IO
++		if (ep->dwc_ep.type != UE_ISOCHRONOUS) {
++#endif
++			ep->dwc_ep.desc_addr =
++			    dwc_otg_ep_alloc_desc_chain(dev,
++						&ep->dwc_ep.dma_desc_addr,
++						MAX_DMA_DESC_CNT);
++			if (!ep->dwc_ep.desc_addr) {
++				DWC_WARN("%s, can't allocate DMA descriptor\n",
++					 __func__);
++				retval = -DWC_E_SHUTDOWN;
++				DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++				goto out;
++			}
++#ifndef DWC_UTE_PER_IO
++		}
++#endif
++	}
++
++	DWC_DEBUGPL(DBG_PCD, "Activate %s: type=%d, mps=%d desc=%p\n",
++		    (ep->dwc_ep.is_in ? "IN" : "OUT"),
++		    ep->dwc_ep.type, ep->dwc_ep.maxpacket, ep->desc);
++#ifdef DWC_UTE_PER_IO
++	ep->dwc_ep.xiso_bInterval = 1 << (ep->desc->bInterval - 1);
++#endif
++	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
++		ep->dwc_ep.bInterval = 1 << (ep->desc->bInterval - 1);
++		ep->dwc_ep.frame_num = 0xFFFFFFFF;
++	}
++
++	dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
++
++#ifdef DWC_UTE_CFI
++	if (pcd->cfi->ops.ep_enable) {
++		pcd->cfi->ops.ep_enable(pcd->cfi, pcd, ep);
++	}
++#endif
++
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++out:
++	return retval;
++}
++
++/**
++ * This function is being called from gadget
++ * to disable PCD endpoint.
++ */
++int dwc_otg_pcd_ep_disable(dwc_otg_pcd_t * pcd, void *ep_handle)
++{
++	dwc_otg_pcd_ep_t *ep;
++	dwc_irqflags_t flags;
++	dwc_otg_dev_dma_desc_t *desc_addr;
++	dwc_dma_t dma_desc_addr;
++	gdfifocfg_data_t gdfifocfgbase = {.d32 = 0 };
++	gdfifocfg_data_t gdfifocfg = {.d32 = 0 };
++	fifosize_data_t dptxfsiz = {.d32 = 0 };
++	struct device *dev = dwc_otg_pcd_to_dev(pcd);
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++
++	if (!ep || !ep->desc) {
++		DWC_DEBUGPL(DBG_PCD, "bad ep address\n");
++		return -DWC_E_INVALID;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++
++	dwc_otg_request_nuke(ep);
++
++	dwc_otg_ep_deactivate(GET_CORE_IF(pcd), &ep->dwc_ep);
++	if (pcd->core_if->core_params->dev_out_nak) {
++		DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[ep->dwc_ep.num]);
++		pcd->core_if->ep_xfer_info[ep->dwc_ep.num].state = 0;
++	}
++	ep->desc = NULL;
++	ep->stopped = 1;
++
++	gdfifocfg.d32 =
++	    DWC_READ_REG32(&GET_CORE_IF(pcd)->core_global_regs->gdfifocfg);
++	gdfifocfgbase.d32 = gdfifocfg.d32 >> 16;
++
++	if (ep->dwc_ep.is_in) {
++		if (GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
++			/* Flush the Tx FIFO */
++			dwc_otg_flush_tx_fifo(GET_CORE_IF(pcd),
++					      ep->dwc_ep.tx_fifo_num);
++		}
++		release_perio_tx_fifo(GET_CORE_IF(pcd), ep->dwc_ep.tx_fifo_num);
++		release_tx_fifo(GET_CORE_IF(pcd), ep->dwc_ep.tx_fifo_num);
++		if (GET_CORE_IF(pcd)->en_multiple_tx_fifo) {
++			/* Decreasing EPinfo Base Addr */
++			dptxfsiz.d32 =
++			    (DWC_READ_REG32
++			     (&GET_CORE_IF(pcd)->
++				core_global_regs->dtxfsiz[ep->dwc_ep.tx_fifo_num-1]) >> 16);
++			gdfifocfg.b.epinfobase = gdfifocfgbase.d32 - dptxfsiz.d32;
++			if (GET_CORE_IF(pcd)->snpsid <= OTG_CORE_REV_2_94a) {
++				DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gdfifocfg,
++					gdfifocfg.d32);
++			}
++		}
++	}
++
++	/* Free DMA Descriptors */
++	if (GET_CORE_IF(pcd)->dma_desc_enable) {
++		if (ep->dwc_ep.type != UE_ISOCHRONOUS) {
++			desc_addr = ep->dwc_ep.desc_addr;
++			dma_desc_addr = ep->dwc_ep.dma_desc_addr;
++
++			/* Cannot call dma_free_coherent() with IRQs disabled */
++			DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++			dwc_otg_ep_free_desc_chain(dev, desc_addr, dma_desc_addr,
++						   MAX_DMA_DESC_CNT);
++
++			goto out_unlocked;
++		}
++	}
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++out_unlocked:
++	DWC_DEBUGPL(DBG_PCD, "%d %s disabled\n", ep->dwc_ep.num,
++		    ep->dwc_ep.is_in ? "IN" : "OUT");
++	return 0;
++
++}
++
++/******************************************************************************/
++#ifdef DWC_UTE_PER_IO
++
++/**
++ * Free the request and its extended parts
++ *
++ */
++void dwc_pcd_xiso_ereq_free(dwc_otg_pcd_ep_t * ep, dwc_otg_pcd_request_t * req)
++{
++	DWC_FREE(req->ext_req.per_io_frame_descs);
++	DWC_FREE(req);
++}
++
++/**
++ * Start the next request in the endpoint's queue.
++ *
++ */
++int dwc_otg_pcd_xiso_start_next_request(dwc_otg_pcd_t * pcd,
++					dwc_otg_pcd_ep_t * ep)
++{
++	int i;
++	dwc_otg_pcd_request_t *req = NULL;
++	dwc_ep_t *dwcep = NULL;
++	struct dwc_iso_xreq_port *ereq = NULL;
++	struct dwc_iso_pkt_desc_port *ddesc_iso;
++	uint16_t nat;
++	depctl_data_t diepctl;
++
++	dwcep = &ep->dwc_ep;
++
++	if (dwcep->xiso_active_xfers > 0) {
++#if 0	//Disable this to decrease s/w overhead that is crucial for Isoc transfers
++		DWC_WARN("There are currently active transfers for EP%d \
++				(active=%d; queued=%d)", dwcep->num, dwcep->xiso_active_xfers,
++				dwcep->xiso_queued_xfers);
++#endif
++		return 0;
++	}
++
++	nat = UGETW(ep->desc->wMaxPacketSize);
++	nat = (nat >> 11) & 0x03;
++
++	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		req = DWC_CIRCLEQ_FIRST(&ep->queue);
++		ereq = &req->ext_req;
++		ep->stopped = 0;
++
++		/* Get the frame number */
++		dwcep->xiso_frame_num =
++		    dwc_otg_get_frame_number(GET_CORE_IF(pcd));
++		DWC_DEBUG("FRM_NUM=%d", dwcep->xiso_frame_num);
++
++		ddesc_iso = ereq->per_io_frame_descs;
++
++		if (dwcep->is_in) {
++			/* Setup DMA Descriptor chain for IN Isoc request */
++			for (i = 0; i < ereq->pio_pkt_count; i++) {
++				//if ((i % (nat + 1)) == 0)
++				if ( i > 0 )
++					dwcep->xiso_frame_num =
++					    (dwcep->xiso_bInterval +
++										dwcep->xiso_frame_num) & 0x3FFF;
++				dwcep->desc_addr[i].buf =
++				    req->dma + ddesc_iso[i].offset;
++				dwcep->desc_addr[i].status.b_iso_in.txbytes =
++				    ddesc_iso[i].length;
++				dwcep->desc_addr[i].status.b_iso_in.framenum =
++				    dwcep->xiso_frame_num;
++				dwcep->desc_addr[i].status.b_iso_in.bs =
++				    BS_HOST_READY;
++				dwcep->desc_addr[i].status.b_iso_in.txsts = 0;
++				dwcep->desc_addr[i].status.b_iso_in.sp =
++				    (ddesc_iso[i].length %
++				     dwcep->maxpacket) ? 1 : 0;
++				dwcep->desc_addr[i].status.b_iso_in.ioc = 0;
++				dwcep->desc_addr[i].status.b_iso_in.pid = nat + 1;
++				dwcep->desc_addr[i].status.b_iso_in.l = 0;
++
++				/* Process the last descriptor */
++				if (i == ereq->pio_pkt_count - 1) {
++					dwcep->desc_addr[i].status.b_iso_in.ioc = 1;
++					dwcep->desc_addr[i].status.b_iso_in.l = 1;
++				}
++			}
++
++			/* Setup and start the transfer for this endpoint */
++			dwcep->xiso_active_xfers++;
++			DWC_WRITE_REG32(&GET_CORE_IF(pcd)->dev_if->
++					in_ep_regs[dwcep->num]->diepdma,
++					dwcep->dma_desc_addr);
++			diepctl.d32 = 0;
++			diepctl.b.epena = 1;
++			diepctl.b.cnak = 1;
++			DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->dev_if->
++					 in_ep_regs[dwcep->num]->diepctl, 0,
++					 diepctl.d32);
++		} else {
++			/* Setup DMA Descriptor chain for OUT Isoc request */
++			for (i = 0; i < ereq->pio_pkt_count; i++) {
++				//if ((i % (nat + 1)) == 0)
++				dwcep->xiso_frame_num = (dwcep->xiso_bInterval +
++										dwcep->xiso_frame_num) & 0x3FFF;
++				dwcep->desc_addr[i].buf =
++				    req->dma + ddesc_iso[i].offset;
++				dwcep->desc_addr[i].status.b_iso_out.rxbytes =
++				    ddesc_iso[i].length;
++				dwcep->desc_addr[i].status.b_iso_out.framenum =
++				    dwcep->xiso_frame_num;
++				dwcep->desc_addr[i].status.b_iso_out.bs =
++				    BS_HOST_READY;
++				dwcep->desc_addr[i].status.b_iso_out.rxsts = 0;
++				dwcep->desc_addr[i].status.b_iso_out.sp =
++				    (ddesc_iso[i].length %
++				     dwcep->maxpacket) ? 1 : 0;
++				dwcep->desc_addr[i].status.b_iso_out.ioc = 0;
++				dwcep->desc_addr[i].status.b_iso_out.pid = nat + 1;
++				dwcep->desc_addr[i].status.b_iso_out.l = 0;
++
++				/* Process the last descriptor */
++				if (i == ereq->pio_pkt_count - 1) {
++					dwcep->desc_addr[i].status.b_iso_out.ioc = 1;
++					dwcep->desc_addr[i].status.b_iso_out.l = 1;
++				}
++			}
++
++			/* Setup and start the transfer for this endpoint */
++			dwcep->xiso_active_xfers++;
++			DWC_WRITE_REG32(&GET_CORE_IF(pcd)->
++					dev_if->out_ep_regs[dwcep->num]->
++					doepdma, dwcep->dma_desc_addr);
++			diepctl.d32 = 0;
++			diepctl.b.epena = 1;
++			diepctl.b.cnak = 1;
++			DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
++					 dev_if->out_ep_regs[dwcep->num]->
++					 doepctl, 0, diepctl.d32);
++		}
++
++	} else {
++		ep->stopped = 1;
++	}
++
++	return 0;
++}
++
++/**
++ *	- Remove the request from the queue
++ */
++void complete_xiso_ep(dwc_otg_pcd_ep_t * ep)
++{
++	dwc_otg_pcd_request_t *req = NULL;
++	struct dwc_iso_xreq_port *ereq = NULL;
++	struct dwc_iso_pkt_desc_port *ddesc_iso = NULL;
++	dwc_ep_t *dwcep = NULL;
++	int i;
++
++	//DWC_DEBUG();
++	dwcep = &ep->dwc_ep;
++
++	/* Get the first pending request from the queue */
++	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		req = DWC_CIRCLEQ_FIRST(&ep->queue);
++		if (!req) {
++			DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
++			return;
++		}
++		dwcep->xiso_active_xfers--;
++		dwcep->xiso_queued_xfers--;
++		/* Remove this request from the queue */
++		DWC_CIRCLEQ_REMOVE_INIT(&ep->queue, req, queue_entry);
++	} else {
++		DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
++		return;
++	}
++
++	ep->stopped = 1;
++	ereq = &req->ext_req;
++	ddesc_iso = ereq->per_io_frame_descs;
++
++	if (dwcep->xiso_active_xfers < 0) {
++		DWC_WARN("EP#%d (xiso_active_xfers=%d)", dwcep->num,
++			 dwcep->xiso_active_xfers);
++	}
++
++	/* Fill the Isoc descs of portable extended req from dma descriptors */
++	for (i = 0; i < ereq->pio_pkt_count; i++) {
++		if (dwcep->is_in) {	/* IN endpoints */
++			ddesc_iso[i].actual_length = ddesc_iso[i].length -
++			    dwcep->desc_addr[i].status.b_iso_in.txbytes;
++			ddesc_iso[i].status =
++			    dwcep->desc_addr[i].status.b_iso_in.txsts;
++		} else {	/* OUT endpoints */
++			ddesc_iso[i].actual_length = ddesc_iso[i].length -
++			    dwcep->desc_addr[i].status.b_iso_out.rxbytes;
++			ddesc_iso[i].status =
++			    dwcep->desc_addr[i].status.b_iso_out.rxsts;
++		}
++	}
++
++	DWC_SPINUNLOCK(ep->pcd->lock);
++
++	/* Call the completion function in the non-portable logic */
++	ep->pcd->fops->xisoc_complete(ep->pcd, ep->priv, req->priv, 0,
++				      &req->ext_req);
++
++	DWC_SPINLOCK(ep->pcd->lock);
++
++	/* Free the request - specific freeing needed for extended request object */
++	dwc_pcd_xiso_ereq_free(ep, req);
++
++	/* Start the next request */
++	dwc_otg_pcd_xiso_start_next_request(ep->pcd, ep);
++
++	return;
++}
++
++/**
++ * Create and initialize the Isoc pkt descriptors of the extended request.
++ *
++ */
++static int dwc_otg_pcd_xiso_create_pkt_descs(dwc_otg_pcd_request_t * req,
++					     void *ereq_nonport,
++					     int atomic_alloc)
++{
++	struct dwc_iso_xreq_port *ereq = NULL;
++	struct dwc_iso_xreq_port *req_mapped = NULL;
++	struct dwc_iso_pkt_desc_port *ipds = NULL;	/* To be created in this function */
++	uint32_t pkt_count;
++	int i;
++
++	ereq = &req->ext_req;
++	req_mapped = (struct dwc_iso_xreq_port *)ereq_nonport;
++	pkt_count = req_mapped->pio_pkt_count;
++
++	/* Create the isoc descs */
++	if (atomic_alloc) {
++		ipds = DWC_ALLOC_ATOMIC(sizeof(*ipds) * pkt_count);
++	} else {
++		ipds = DWC_ALLOC(sizeof(*ipds) * pkt_count);
++	}
++
++	if (!ipds) {
++		DWC_ERROR("Failed to allocate isoc descriptors");
++		return -DWC_E_NO_MEMORY;
++	}
++
++	/* Initialize the extended request fields */
++	ereq->per_io_frame_descs = ipds;
++	ereq->error_count = 0;
++	ereq->pio_alloc_pkt_count = pkt_count;
++	ereq->pio_pkt_count = pkt_count;
++	ereq->tr_sub_flags = req_mapped->tr_sub_flags;
++
++	/* Init the Isoc descriptors */
++	for (i = 0; i < pkt_count; i++) {
++		ipds[i].length = req_mapped->per_io_frame_descs[i].length;
++		ipds[i].offset = req_mapped->per_io_frame_descs[i].offset;
++		ipds[i].status = req_mapped->per_io_frame_descs[i].status;	/* 0 */
++		ipds[i].actual_length =
++		    req_mapped->per_io_frame_descs[i].actual_length;
++	}
++
++	return 0;
++}
++
++static void prn_ext_request(struct dwc_iso_xreq_port *ereq)
++{
++	struct dwc_iso_pkt_desc_port *xfd = NULL;
++	int i;
++
++	DWC_DEBUG("per_io_frame_descs=%p", ereq->per_io_frame_descs);
++	DWC_DEBUG("tr_sub_flags=%d", ereq->tr_sub_flags);
++	DWC_DEBUG("error_count=%d", ereq->error_count);
++	DWC_DEBUG("pio_alloc_pkt_count=%d", ereq->pio_alloc_pkt_count);
++	DWC_DEBUG("pio_pkt_count=%d", ereq->pio_pkt_count);
++	DWC_DEBUG("res=%d", ereq->res);
++
++	for (i = 0; i < ereq->pio_pkt_count; i++) {
++		xfd = &ereq->per_io_frame_descs[0];
++		DWC_DEBUG("FD #%d", i);
++
++		DWC_DEBUG("xfd->actual_length=%d", xfd->actual_length);
++		DWC_DEBUG("xfd->length=%d", xfd->length);
++		DWC_DEBUG("xfd->offset=%d", xfd->offset);
++		DWC_DEBUG("xfd->status=%d", xfd->status);
++	}
++}
++
++/**
++ *
++ */
++int dwc_otg_pcd_xiso_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
++			      uint8_t * buf, dwc_dma_t dma_buf, uint32_t buflen,
++			      int zero, void *req_handle, int atomic_alloc,
++			      void *ereq_nonport)
++{
++	dwc_otg_pcd_request_t *req = NULL;
++	dwc_otg_pcd_ep_t *ep;
++	dwc_irqflags_t flags;
++	int res;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++	if (!ep) {
++		DWC_WARN("bad ep\n");
++		return -DWC_E_INVALID;
++	}
++
++	/* We support this extension only for DDMA mode */
++	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC)
++		if (!GET_CORE_IF(pcd)->dma_desc_enable)
++			return -DWC_E_INVALID;
++
++	/* Create a dwc_otg_pcd_request_t object */
++	if (atomic_alloc) {
++		req = DWC_ALLOC_ATOMIC(sizeof(*req));
++	} else {
++		req = DWC_ALLOC(sizeof(*req));
++	}
++
++	if (!req) {
++		return -DWC_E_NO_MEMORY;
++	}
++
++	/* Create the Isoc descs for this request which shall be the exact match
++	 * of the structure sent to us from the non-portable logic */
++	res =
++	    dwc_otg_pcd_xiso_create_pkt_descs(req, ereq_nonport, atomic_alloc);
++	if (res) {
++		DWC_WARN("Failed to init the Isoc descriptors");
++		DWC_FREE(req);
++		return res;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++
++	DWC_CIRCLEQ_INIT_ENTRY(req, queue_entry);
++	req->buf = buf;
++	req->dma = dma_buf;
++	req->length = buflen;
++	req->sent_zlp = zero;
++	req->priv = req_handle;
++
++	//DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++	ep->dwc_ep.dma_addr = dma_buf;
++	ep->dwc_ep.start_xfer_buff = buf;
++	ep->dwc_ep.xfer_buff = buf;
++	ep->dwc_ep.xfer_len = 0;
++	ep->dwc_ep.xfer_count = 0;
++	ep->dwc_ep.sent_zlp = 0;
++	ep->dwc_ep.total_len = buflen;
++
++	/* Add this request to the tail */
++	DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
++	ep->dwc_ep.xiso_queued_xfers++;
++
++//DWC_DEBUG("CP_0");
++//DWC_DEBUG("req->ext_req.tr_sub_flags=%d", req->ext_req.tr_sub_flags);
++//prn_ext_request((struct dwc_iso_xreq_port *) ereq_nonport);
++//prn_ext_request(&req->ext_req);
++
++	//DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++	/* If the req->status == ASAP  then check if there is any active transfer
++	 * for this endpoint. If no active transfers, then get the first entry
++	 * from the queue and start that transfer
++	 */
++	if (req->ext_req.tr_sub_flags == DWC_EREQ_TF_ASAP) {
++		res = dwc_otg_pcd_xiso_start_next_request(pcd, ep);
++		if (res) {
++			DWC_WARN("Failed to start the next Isoc transfer");
++			DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++			DWC_FREE(req);
++			return res;
++		}
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++	return 0;
++}
++
++#endif
++/* END ifdef DWC_UTE_PER_IO ***************************************************/
++int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
++			 uint8_t * buf, dwc_dma_t dma_buf, uint32_t buflen,
++			 int zero, void *req_handle, int atomic_alloc)
++{
++	struct device *dev = dwc_otg_pcd_to_dev(pcd);
++	dwc_irqflags_t flags;
++	dwc_otg_pcd_request_t *req;
++	dwc_otg_pcd_ep_t *ep;
++	uint32_t max_transfer;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++	if (!ep || (!ep->desc && ep->dwc_ep.num != 0)) {
++		DWC_WARN("bad ep\n");
++		return -DWC_E_INVALID;
++	}
++
++	if (atomic_alloc) {
++		req = DWC_ALLOC_ATOMIC(sizeof(*req));
++	} else {
++		req = DWC_ALLOC(sizeof(*req));
++	}
++
++	if (!req) {
++		return -DWC_E_NO_MEMORY;
++	}
++	DWC_CIRCLEQ_INIT_ENTRY(req, queue_entry);
++	if (!GET_CORE_IF(pcd)->core_params->opt) {
++		if (ep->dwc_ep.num != 0) {
++			DWC_ERROR("queue req %p, len %d buf %p\n",
++				  req_handle, buflen, buf);
++		}
++	}
++
++	req->buf = buf;
++	req->dma = dma_buf;
++	req->length = buflen;
++	req->sent_zlp = zero;
++	req->priv = req_handle;
++	req->dw_align_buf = NULL;
++	if ((dma_buf & 0x3) && GET_CORE_IF(pcd)->dma_enable
++			&& !GET_CORE_IF(pcd)->dma_desc_enable)
++		req->dw_align_buf = DWC_DMA_ALLOC(dev, buflen,
++				 &req->dw_align_buf_dma);
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++
++	/*
++	 * After adding request to the queue for IN ISOC wait for In Token Received
++	 * when TX FIFO is empty interrupt and for OUT ISOC wait for OUT Token
++	 * Received when EP is disabled interrupt to obtain starting microframe
++	 * (odd/even) start transfer
++	 */
++	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
++		if (req != 0) {
++			depctl_data_t depctl = {.d32 =
++				    DWC_READ_REG32(&pcd->core_if->dev_if->
++						   in_ep_regs[ep->dwc_ep.num]->
++						   diepctl) };
++			++pcd->request_pending;
++
++			DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
++			if (ep->dwc_ep.is_in) {
++				depctl.b.cnak = 1;
++				DWC_WRITE_REG32(&pcd->core_if->dev_if->
++						in_ep_regs[ep->dwc_ep.num]->
++						diepctl, depctl.d32);
++			}
++
++			DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++		}
++		return 0;
++	}
++
++	/*
++	 * For EP0 IN without premature status, zlp is required?
++	 */
++	if (ep->dwc_ep.num == 0 && ep->dwc_ep.is_in) {
++		DWC_DEBUGPL(DBG_PCDV, "%d-OUT ZLP\n", ep->dwc_ep.num);
++		//_req->zero = 1;
++	}
++
++	/* Start the transfer */
++	if (DWC_CIRCLEQ_EMPTY(&ep->queue) && !ep->stopped) {
++		/* EP0 Transfer? */
++		if (ep->dwc_ep.num == 0) {
++			switch (pcd->ep0state) {
++			case EP0_IN_DATA_PHASE:
++				DWC_DEBUGPL(DBG_PCD,
++					    "%s ep0: EP0_IN_DATA_PHASE\n",
++					    __func__);
++				break;
++
++			case EP0_OUT_DATA_PHASE:
++				DWC_DEBUGPL(DBG_PCD,
++					    "%s ep0: EP0_OUT_DATA_PHASE\n",
++					    __func__);
++				if (pcd->request_config) {
++					/* Complete STATUS PHASE */
++					ep->dwc_ep.is_in = 1;
++					pcd->ep0state = EP0_IN_STATUS_PHASE;
++				}
++				break;
++
++			case EP0_IN_STATUS_PHASE:
++				DWC_DEBUGPL(DBG_PCD,
++					    "%s ep0: EP0_IN_STATUS_PHASE\n",
++					    __func__);
++				break;
++
++			default:
++				DWC_DEBUGPL(DBG_ANY, "ep0: odd state %d\n",
++					    pcd->ep0state);
++				DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++				return -DWC_E_SHUTDOWN;
++			}
++
++			ep->dwc_ep.dma_addr = dma_buf;
++			ep->dwc_ep.start_xfer_buff = buf;
++			ep->dwc_ep.xfer_buff = buf;
++			ep->dwc_ep.xfer_len = buflen;
++			ep->dwc_ep.xfer_count = 0;
++			ep->dwc_ep.sent_zlp = 0;
++			ep->dwc_ep.total_len = ep->dwc_ep.xfer_len;
++
++			if (zero) {
++				if ((ep->dwc_ep.xfer_len %
++				     ep->dwc_ep.maxpacket == 0)
++				    && (ep->dwc_ep.xfer_len != 0)) {
++					ep->dwc_ep.sent_zlp = 1;
++				}
++
++			}
++
++			dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd),
++						   &ep->dwc_ep);
++		}		// non-ep0 endpoints
++		else {
++#ifdef DWC_UTE_CFI
++			if (ep->dwc_ep.buff_mode != BM_STANDARD) {
++				/* store the request length */
++				ep->dwc_ep.cfi_req_len = buflen;
++				pcd->cfi->ops.build_descriptors(pcd->cfi, pcd,
++								ep, req);
++			} else {
++#endif
++				max_transfer =
++				    GET_CORE_IF(ep->pcd)->core_params->
++				    max_transfer_size;
++
++				/* Setup and start the Transfer */
++				if (req->dw_align_buf){
++					if (ep->dwc_ep.is_in)
++						dwc_memcpy(req->dw_align_buf,
++							   buf, buflen);
++					ep->dwc_ep.dma_addr =
++					    req->dw_align_buf_dma;
++					ep->dwc_ep.start_xfer_buff =
++					    req->dw_align_buf;
++					ep->dwc_ep.xfer_buff =
++					    req->dw_align_buf;
++				} else {
++					ep->dwc_ep.dma_addr = dma_buf;
++					ep->dwc_ep.start_xfer_buff = buf;
++                                        ep->dwc_ep.xfer_buff = buf;
++				}
++				ep->dwc_ep.xfer_len = 0;
++				ep->dwc_ep.xfer_count = 0;
++				ep->dwc_ep.sent_zlp = 0;
++				ep->dwc_ep.total_len = buflen;
++
++				ep->dwc_ep.maxxfer = max_transfer;
++				if (GET_CORE_IF(pcd)->dma_desc_enable) {
++					uint32_t out_max_xfer =
++					    DDMA_MAX_TRANSFER_SIZE -
++					    (DDMA_MAX_TRANSFER_SIZE % 4);
++					if (ep->dwc_ep.is_in) {
++						if (ep->dwc_ep.maxxfer >
++						    DDMA_MAX_TRANSFER_SIZE) {
++							ep->dwc_ep.maxxfer =
++							    DDMA_MAX_TRANSFER_SIZE;
++						}
++					} else {
++						if (ep->dwc_ep.maxxfer >
++						    out_max_xfer) {
++							ep->dwc_ep.maxxfer =
++							    out_max_xfer;
++						}
++					}
++				}
++				if (ep->dwc_ep.maxxfer < ep->dwc_ep.total_len) {
++					ep->dwc_ep.maxxfer -=
++					    (ep->dwc_ep.maxxfer %
++					     ep->dwc_ep.maxpacket);
++				}
++
++				if (zero) {
++					if ((ep->dwc_ep.total_len %
++					     ep->dwc_ep.maxpacket == 0)
++					    && (ep->dwc_ep.total_len != 0)) {
++						ep->dwc_ep.sent_zlp = 1;
++					}
++				}
++#ifdef DWC_UTE_CFI
++			}
++#endif
++			dwc_otg_ep_start_transfer(GET_CORE_IF(pcd),
++						  &ep->dwc_ep);
++		}
++	}
++
++	if (req != 0) {
++		++pcd->request_pending;
++		DWC_CIRCLEQ_INSERT_TAIL(&ep->queue, req, queue_entry);
++		if (ep->dwc_ep.is_in && ep->stopped
++		    && !(GET_CORE_IF(pcd)->dma_enable)) {
++			/** @todo NGS Create a function for this. */
++			diepmsk_data_t diepmsk = {.d32 = 0 };
++			diepmsk.b.intktxfemp = 1;
++			if (GET_CORE_IF(pcd)->multiproc_int_enable) {
++				DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
++						 dev_if->dev_global_regs->diepeachintmsk
++						 [ep->dwc_ep.num], 0,
++						 diepmsk.d32);
++			} else {
++				DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->
++						 dev_if->dev_global_regs->
++						 diepmsk, 0, diepmsk.d32);
++			}
++
++		}
++	}
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++	return 0;
++}
++
++int dwc_otg_pcd_ep_dequeue(dwc_otg_pcd_t * pcd, void *ep_handle,
++			   void *req_handle)
++{
++	dwc_irqflags_t flags;
++	dwc_otg_pcd_request_t *req;
++	dwc_otg_pcd_ep_t *ep;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++	if (!ep || (!ep->desc && ep->dwc_ep.num != 0)) {
++		DWC_WARN("bad argument\n");
++		return -DWC_E_INVALID;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++
++	/* make sure it's actually queued on this endpoint */
++	DWC_CIRCLEQ_FOREACH(req, &ep->queue, queue_entry) {
++		if (req->priv == (void *)req_handle) {
++			break;
++		}
++	}
++
++	if (req->priv != (void *)req_handle) {
++		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++		return -DWC_E_INVALID;
++	}
++
++	if (!DWC_CIRCLEQ_EMPTY_ENTRY(req, queue_entry)) {
++		dwc_otg_request_done(ep, req, -DWC_E_RESTART);
++	} else {
++		req = NULL;
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++	return req ? 0 : -DWC_E_SHUTDOWN;
++
++}
++
++/**
++ * dwc_otg_pcd_ep_wedge - sets the halt feature and ignores clear requests
++ *
++ * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
++ * requests. If the gadget driver clears the halt status, it will
++ * automatically unwedge the endpoint.
++ *
++ * Returns zero on success, else negative DWC error code.
++ */
++int dwc_otg_pcd_ep_wedge(dwc_otg_pcd_t * pcd, void *ep_handle)
++{
++	dwc_otg_pcd_ep_t *ep;
++	dwc_irqflags_t flags;
++	int retval = 0;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++
++	if ((!ep->desc && ep != &pcd->ep0) ||
++	    (ep->desc && (ep->desc->bmAttributes == UE_ISOCHRONOUS))) {
++		DWC_WARN("%s, bad ep\n", __func__);
++		return -DWC_E_INVALID;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		DWC_WARN("%d %s XFer In process\n", ep->dwc_ep.num,
++			 ep->dwc_ep.is_in ? "IN" : "OUT");
++		retval = -DWC_E_AGAIN;
++	} else {
++                /* This code needs to be reviewed */
++		if (ep->dwc_ep.is_in == 1 && GET_CORE_IF(pcd)->dma_desc_enable) {
++			dtxfsts_data_t txstatus;
++			fifosize_data_t txfifosize;
++
++			txfifosize.d32 =
++			    DWC_READ_REG32(&GET_CORE_IF(pcd)->
++					   core_global_regs->dtxfsiz[ep->dwc_ep.
++								     tx_fifo_num]);
++			txstatus.d32 =
++			    DWC_READ_REG32(&GET_CORE_IF(pcd)->
++					   dev_if->in_ep_regs[ep->dwc_ep.num]->
++					   dtxfsts);
++
++			if (txstatus.b.txfspcavail < txfifosize.b.depth) {
++				DWC_WARN("%s() Data In Tx Fifo\n", __func__);
++				retval = -DWC_E_AGAIN;
++			} else {
++				if (ep->dwc_ep.num == 0) {
++					pcd->ep0state = EP0_STALL;
++				}
++
++				ep->stopped = 1;
++				dwc_otg_ep_set_stall(GET_CORE_IF(pcd),
++						     &ep->dwc_ep);
++			}
++		} else {
++			if (ep->dwc_ep.num == 0) {
++				pcd->ep0state = EP0_STALL;
++			}
++
++			ep->stopped = 1;
++			dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
++		}
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++	return retval;
++}
++
++int dwc_otg_pcd_ep_halt(dwc_otg_pcd_t * pcd, void *ep_handle, int value)
++{
++	dwc_otg_pcd_ep_t *ep;
++	dwc_irqflags_t flags;
++	int retval = 0;
++
++	ep = get_ep_from_handle(pcd, ep_handle);
++
++	if (!ep || (!ep->desc && ep != &pcd->ep0) ||
++	    (ep->desc && (ep->desc->bmAttributes == UE_ISOCHRONOUS))) {
++		DWC_WARN("%s, bad ep\n", __func__);
++		return -DWC_E_INVALID;
++	}
++
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		DWC_WARN("%d %s XFer In process\n", ep->dwc_ep.num,
++			 ep->dwc_ep.is_in ? "IN" : "OUT");
++		retval = -DWC_E_AGAIN;
++	} else if (value == 0) {
++		dwc_otg_ep_clear_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
++	} else if (value == 1) {
++		if (ep->dwc_ep.is_in == 1 && GET_CORE_IF(pcd)->dma_desc_enable) {
++			dtxfsts_data_t txstatus;
++			fifosize_data_t txfifosize;
++
++			txfifosize.d32 =
++			    DWC_READ_REG32(&GET_CORE_IF(pcd)->core_global_regs->
++					   dtxfsiz[ep->dwc_ep.tx_fifo_num]);
++			txstatus.d32 =
++			    DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
++					   in_ep_regs[ep->dwc_ep.num]->dtxfsts);
++
++			if (txstatus.b.txfspcavail < txfifosize.b.depth) {
++				DWC_WARN("%s() Data In Tx Fifo\n", __func__);
++				retval = -DWC_E_AGAIN;
++			} else {
++				if (ep->dwc_ep.num == 0) {
++					pcd->ep0state = EP0_STALL;
++				}
++
++				ep->stopped = 1;
++				dwc_otg_ep_set_stall(GET_CORE_IF(pcd),
++						     &ep->dwc_ep);
++			}
++		} else {
++			if (ep->dwc_ep.num == 0) {
++				pcd->ep0state = EP0_STALL;
++			}
++
++			ep->stopped = 1;
++			dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
++		}
++	} else if (value == 2) {
++		ep->dwc_ep.stall_clear_flag = 0;
++	} else if (value == 3) {
++		ep->dwc_ep.stall_clear_flag = 1;
++	}
++
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++
++	return retval;
++}
++
++/**
++ * This function initiates remote wakeup of the host from suspend state.
++ */
++void dwc_otg_pcd_rem_wkup_from_suspend(dwc_otg_pcd_t * pcd, int set)
++{
++	dctl_data_t dctl = { 0 };
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dsts_data_t dsts;
++
++	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++	if (!dsts.b.suspsts) {
++		DWC_WARN("Remote wakeup while is not in suspend state\n");
++	}
++	/* Check if DEVICE_REMOTE_WAKEUP feature enabled */
++	if (pcd->remote_wakeup_enable) {
++		if (set) {
++
++			if (core_if->adp_enable) {
++				gpwrdn_data_t gpwrdn;
++
++				dwc_otg_adp_probe_stop(core_if);
++
++				/* Mask SRP detected interrupt from Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.srp_det_msk = 1;
++				DWC_MODIFY_REG32(&core_if->
++						 core_global_regs->gpwrdn,
++						 gpwrdn.d32, 0);
++
++				/* Disable Power Down Logic */
++				gpwrdn.d32 = 0;
++				gpwrdn.b.pmuactv = 1;
++				DWC_MODIFY_REG32(&core_if->
++						 core_global_regs->gpwrdn,
++						 gpwrdn.d32, 0);
++
++				/*
++				 * Initialize the Core for Device mode.
++				 */
++				core_if->op_state = B_PERIPHERAL;
++				dwc_otg_core_init(core_if);
++				dwc_otg_enable_global_interrupts(core_if);
++				cil_pcd_start(core_if);
++
++				dwc_otg_initiate_srp(core_if);
++			}
++
++			dctl.b.rmtwkupsig = 1;
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++					 dctl, 0, dctl.d32);
++			DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n");
++
++			dwc_mdelay(2);
++			DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++					 dctl, dctl.d32, 0);
++			DWC_DEBUGPL(DBG_PCD, "Clear Remote Wakeup\n");
++		}
++	} else {
++		DWC_DEBUGPL(DBG_PCD, "Remote Wakeup is disabled\n");
++	}
++}
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++/**
++ * This function initiates remote wakeup of the host from L1 sleep state.
++ */
++void dwc_otg_pcd_rem_wkup_from_sleep(dwc_otg_pcd_t * pcd, int set)
++{
++	glpmcfg_data_t lpmcfg;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++
++	/* Check if we are in L1 state */
++	if (!lpmcfg.b.prt_sleep_sts) {
++		DWC_DEBUGPL(DBG_PCD, "Device is not in sleep state\n");
++		return;
++	}
++
++	/* Check if host allows remote wakeup */
++	if (!lpmcfg.b.rem_wkup_en) {
++		DWC_DEBUGPL(DBG_PCD, "Host does not allow remote wakeup\n");
++		return;
++	}
++
++	/* Check if Resume OK */
++	if (!lpmcfg.b.sleep_state_resumeok) {
++		DWC_DEBUGPL(DBG_PCD, "Sleep state resume is not OK\n");
++		return;
++	}
++
++	lpmcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->glpmcfg);
++	lpmcfg.b.en_utmi_sleep = 0;
++	lpmcfg.b.hird_thres &= (~(1 << 4));
++	DWC_WRITE_REG32(&core_if->core_global_regs->glpmcfg, lpmcfg.d32);
++
++	if (set) {
++		dctl_data_t dctl = {.d32 = 0 };
++		dctl.b.rmtwkupsig = 1;
++		/* Set RmtWkUpSig bit to start remote wakup signaling.
++		 * Hardware will automatically clear this bit.
++		 */
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl,
++				 0, dctl.d32);
++		DWC_DEBUGPL(DBG_PCD, "Set Remote Wakeup\n");
++	}
++
++}
++#endif
++
++/**
++ * Performs remote wakeup.
++ */
++void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t * pcd, int set)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_irqflags_t flags;
++	if (dwc_otg_is_device_mode(core_if)) {
++		DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++#ifdef CONFIG_USB_DWC_OTG_LPM
++		if (core_if->lx_state == DWC_OTG_L1) {
++			dwc_otg_pcd_rem_wkup_from_sleep(pcd, set);
++		} else {
++#endif
++			dwc_otg_pcd_rem_wkup_from_suspend(pcd, set);
++#ifdef CONFIG_USB_DWC_OTG_LPM
++		}
++#endif
++		DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++	}
++	return;
++}
++
++void dwc_otg_pcd_disconnect_us(dwc_otg_pcd_t * pcd, int no_of_usecs)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dctl_data_t dctl = { 0 };
++
++	if (dwc_otg_is_device_mode(core_if)) {
++		dctl.b.sftdiscon = 1;
++		DWC_PRINTF("Soft disconnect for %d useconds\n",no_of_usecs);
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, 0, dctl.d32);
++		dwc_udelay(no_of_usecs);
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32,0);
++
++	} else{
++		DWC_PRINTF("NOT SUPPORTED IN HOST MODE\n");
++	}
++	return;
++
++}
++
++int dwc_otg_pcd_wakeup(dwc_otg_pcd_t * pcd)
++{
++	dsts_data_t dsts;
++	gotgctl_data_t gotgctl;
++
++	/*
++	 * This function starts the Protocol if no session is in progress. If
++	 * a session is already in progress, but the device is suspended,
++	 * remote wakeup signaling is started.
++	 */
++
++	/* Check if valid session */
++	gotgctl.d32 =
++	    DWC_READ_REG32(&(GET_CORE_IF(pcd)->core_global_regs->gotgctl));
++	if (gotgctl.b.bsesvld) {
++		/* Check if suspend state */
++		dsts.d32 =
++		    DWC_READ_REG32(&
++				   (GET_CORE_IF(pcd)->dev_if->
++				    dev_global_regs->dsts));
++		if (dsts.b.suspsts) {
++			dwc_otg_pcd_remote_wakeup(pcd, 1);
++		}
++	} else {
++		dwc_otg_pcd_initiate_srp(pcd);
++	}
++
++	return 0;
++
++}
++
++/**
++ * Start the SRP timer to detect when the SRP does not complete within
++ * 6 seconds.
++ *
++ * @param pcd the pcd structure.
++ */
++void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t * pcd)
++{
++	dwc_irqflags_t flags;
++	DWC_SPINLOCK_IRQSAVE(pcd->lock, &flags);
++	dwc_otg_initiate_srp(GET_CORE_IF(pcd));
++	DWC_SPINUNLOCK_IRQRESTORE(pcd->lock, flags);
++}
++
++int dwc_otg_pcd_get_frame_number(dwc_otg_pcd_t * pcd)
++{
++	return dwc_otg_get_frame_number(GET_CORE_IF(pcd));
++}
++
++int dwc_otg_pcd_is_lpm_enabled(dwc_otg_pcd_t * pcd)
++{
++	return GET_CORE_IF(pcd)->core_params->lpm_enable;
++}
++
++uint32_t get_b_hnp_enable(dwc_otg_pcd_t * pcd)
++{
++	return pcd->b_hnp_enable;
++}
++
++uint32_t get_a_hnp_support(dwc_otg_pcd_t * pcd)
++{
++	return pcd->a_hnp_support;
++}
++
++uint32_t get_a_alt_hnp_support(dwc_otg_pcd_t * pcd)
++{
++	return pcd->a_alt_hnp_support;
++}
++
++int dwc_otg_pcd_get_rmwkup_enable(dwc_otg_pcd_t * pcd)
++{
++	return pcd->remote_wakeup_enable;
++}
++
++#endif /* DWC_HOST_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd.h
+@@ -0,0 +1,273 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.h $
++ * $Revision: #48 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_HOST_ONLY
++#if !defined(__DWC_PCD_H__)
++#define __DWC_PCD_H__
++
++#include "dwc_otg_os_dep.h"
++#include "usb.h"
++#include "dwc_otg_cil.h"
++#include "dwc_otg_pcd_if.h"
++#include "dwc_otg_driver.h"
++
++struct cfiobject;
++
++/**
++ * @file
++ *
++ * This file contains the structures, constants, and interfaces for
++ * the Perpherial Contoller Driver (PCD).
++ *
++ * The Peripheral Controller Driver (PCD) for Linux will implement the
++ * Gadget API, so that the existing Gadget drivers can be used. For
++ * the Mass Storage Function driver the File-backed USB Storage Gadget
++ * (FBS) driver will be used.  The FBS driver supports the
++ * Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only
++ * transports.
++ *
++ */
++
++/** Invalid DMA Address */
++#define DWC_DMA_ADDR_INVALID	(~(dwc_dma_t)0)
++
++/** Max Transfer size for any EP */
++#define DDMA_MAX_TRANSFER_SIZE 65535
++
++/**
++ * Get the pointer to the core_if from the pcd pointer.
++ */
++#define GET_CORE_IF( _pcd ) (_pcd->core_if)
++
++/**
++ * States of EP0.
++ */
++typedef enum ep0_state {
++	EP0_DISCONNECT,		/* no host */
++	EP0_IDLE,
++	EP0_IN_DATA_PHASE,
++	EP0_OUT_DATA_PHASE,
++	EP0_IN_STATUS_PHASE,
++	EP0_OUT_STATUS_PHASE,
++	EP0_STALL,
++} ep0state_e;
++
++/** Fordward declaration.*/
++struct dwc_otg_pcd;
++
++/** DWC_otg iso request structure.
++ *
++ */
++typedef struct usb_iso_request dwc_otg_pcd_iso_request_t;
++
++#ifdef DWC_UTE_PER_IO
++
++/**
++ * This shall be the exact analogy of the same type structure defined in the
++ * usb_gadget.h. Each descriptor contains
++ */
++struct dwc_iso_pkt_desc_port {
++	uint32_t offset;
++	uint32_t length;	/* expected length */
++	uint32_t actual_length;
++	uint32_t status;
++};
++
++struct dwc_iso_xreq_port {
++	/** transfer/submission flag */
++	uint32_t tr_sub_flags;
++	/** Start the request ASAP */
++#define DWC_EREQ_TF_ASAP		0x00000002
++	/** Just enqueue the request w/o initiating a transfer */
++#define DWC_EREQ_TF_ENQUEUE		0x00000004
++
++	/**
++	* count of ISO packets attached to this request - shall
++	* not exceed the pio_alloc_pkt_count
++	*/
++	uint32_t pio_pkt_count;
++	/** count of ISO packets allocated for this request */
++	uint32_t pio_alloc_pkt_count;
++	/** number of ISO packet errors */
++	uint32_t error_count;
++	/** reserved for future extension */
++	uint32_t res;
++	/** Will be allocated and freed in the UTE gadget and based on the CFC value */
++	struct dwc_iso_pkt_desc_port *per_io_frame_descs;
++};
++#endif
++/** DWC_otg request structure.
++ * This structure is a list of requests.
++ */
++typedef struct dwc_otg_pcd_request {
++	void *priv;
++	void *buf;
++	dwc_dma_t dma;
++	uint32_t length;
++	uint32_t actual;
++	unsigned sent_zlp:1;
++    /**
++     * Used instead of original buffer if
++     * it(physical address) is not dword-aligned.
++     **/
++     uint8_t *dw_align_buf;
++     dwc_dma_t dw_align_buf_dma;
++
++	 DWC_CIRCLEQ_ENTRY(dwc_otg_pcd_request) queue_entry;
++#ifdef DWC_UTE_PER_IO
++	struct dwc_iso_xreq_port ext_req;
++	//void *priv_ereq_nport; /*  */
++#endif
++} dwc_otg_pcd_request_t;
++
++DWC_CIRCLEQ_HEAD(req_list, dwc_otg_pcd_request);
++
++/**	  PCD EP structure.
++ * This structure describes an EP, there is an array of EPs in the PCD
++ * structure.
++ */
++typedef struct dwc_otg_pcd_ep {
++	/** USB EP Descriptor */
++	const usb_endpoint_descriptor_t *desc;
++
++	/** queue of dwc_otg_pcd_requests. */
++	struct req_list queue;
++	unsigned stopped:1;
++	unsigned disabling:1;
++	unsigned dma:1;
++	unsigned queue_sof:1;
++
++#ifdef DWC_EN_ISOC
++	/** ISOC req handle passed */
++	void *iso_req_handle;
++#endif				//_EN_ISOC_
++
++	/** DWC_otg ep data. */
++	dwc_ep_t dwc_ep;
++
++	/** Pointer to PCD */
++	struct dwc_otg_pcd *pcd;
++
++	void *priv;
++} dwc_otg_pcd_ep_t;
++
++/** DWC_otg PCD Structure.
++ * This structure encapsulates the data for the dwc_otg PCD.
++ */
++struct dwc_otg_pcd {
++	const struct dwc_otg_pcd_function_ops *fops;
++	/** The DWC otg device pointer */
++	struct dwc_otg_device *otg_dev;
++	/** Core Interface */
++	dwc_otg_core_if_t *core_if;
++	/** State of EP0 */
++	ep0state_e ep0state;
++	/** EP0 Request is pending */
++	unsigned ep0_pending:1;
++	/** Indicates when SET CONFIGURATION Request is in process */
++	unsigned request_config:1;
++	/** The state of the Remote Wakeup Enable. */
++	unsigned remote_wakeup_enable:1;
++	/** The state of the B-Device HNP Enable. */
++	unsigned b_hnp_enable:1;
++	/** The state of A-Device HNP Support. */
++	unsigned a_hnp_support:1;
++	/** The state of the A-Device Alt HNP support. */
++	unsigned a_alt_hnp_support:1;
++	/** Count of pending Requests */
++	unsigned request_pending;
++
++	/** SETUP packet for EP0
++	 * This structure is allocated as a DMA buffer on PCD initialization
++	 * with enough space for up to 3 setup packets.
++	 */
++	union {
++		usb_device_request_t req;
++		uint32_t d32[2];
++	} *setup_pkt;
++
++	dwc_dma_t setup_pkt_dma_handle;
++
++	/* Additional buffer and flag for CTRL_WR premature case */
++	uint8_t *backup_buf;
++	unsigned data_terminated;
++
++	/** 2-byte dma buffer used to return status from GET_STATUS */
++	uint16_t *status_buf;
++	dwc_dma_t status_buf_dma_handle;
++
++	/** EP0 */
++	dwc_otg_pcd_ep_t ep0;
++
++	/** Array of IN EPs. */
++	dwc_otg_pcd_ep_t in_ep[MAX_EPS_CHANNELS - 1];
++	/** Array of OUT EPs. */
++	dwc_otg_pcd_ep_t out_ep[MAX_EPS_CHANNELS - 1];
++	/** number of valid EPs in the above array. */
++//        unsigned      num_eps : 4;
++	dwc_spinlock_t *lock;
++
++	/** Tasklet to defer starting of TEST mode transmissions until
++	 *	Status Phase has been completed.
++	 */
++	dwc_tasklet_t *test_mode_tasklet;
++
++	/** Tasklet to delay starting of xfer in DMA mode */
++	dwc_tasklet_t *start_xfer_tasklet;
++
++	/** The test mode to enter when the tasklet is executed. */
++	unsigned test_mode;
++	/** The cfi_api structure that implements most of the CFI API
++	 * and OTG specific core configuration functionality
++	 */
++#ifdef DWC_UTE_CFI
++	struct cfiobject *cfi;
++#endif
++
++};
++
++static inline struct device *dwc_otg_pcd_to_dev(struct dwc_otg_pcd *pcd)
++{
++	return &pcd->otg_dev->os_dep.platformdev->dev;
++}
++
++//FIXME this functions should be static, and this prototypes should be removed
++extern void dwc_otg_request_nuke(dwc_otg_pcd_ep_t * ep);
++extern void dwc_otg_request_done(dwc_otg_pcd_ep_t * ep,
++				 dwc_otg_pcd_request_t * req, int32_t status);
++
++void dwc_otg_iso_buffer_done(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep,
++			     void *req_handle);
++
++extern void do_test_mode(void *data);
++#endif
++#endif /* DWC_HOST_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd_if.h
+@@ -0,0 +1,361 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_if.h $
++ * $Revision: #11 $
++ * $Date: 2011/10/26 $
++ * $Change: 1873028 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_HOST_ONLY
++
++#if !defined(__DWC_PCD_IF_H__)
++#define __DWC_PCD_IF_H__
++
++//#include "dwc_os.h"
++#include "dwc_otg_core_if.h"
++#include "dwc_otg_driver.h"
++
++/** @file
++ * This file defines DWC_OTG PCD Core API.
++ */
++
++struct dwc_otg_pcd;
++typedef struct dwc_otg_pcd dwc_otg_pcd_t;
++
++/** Maxpacket size for EP0 */
++#define MAX_EP0_SIZE	64
++/** Maxpacket size for any EP */
++#define MAX_PACKET_SIZE 1024
++
++/** @name Function Driver Callbacks */
++/** @{ */
++
++/** This function will be called whenever a previously queued request has
++ * completed.  The status value will be set to -DWC_E_SHUTDOWN to indicated a
++ * failed or aborted transfer, or -DWC_E_RESTART to indicate the device was reset,
++ * or -DWC_E_TIMEOUT to indicate it timed out, or -DWC_E_INVALID to indicate invalid
++ * parameters. */
++typedef int (*dwc_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
++				    void *req_handle, int32_t status,
++				    uint32_t actual);
++/**
++ * This function will be called whenever a previousle queued ISOC request has
++ * completed. Count of ISOC packets could be read using dwc_otg_pcd_get_iso_packet_count
++ * function.
++ * The status of each ISOC packet could be read using dwc_otg_pcd_get_iso_packet_*
++ * functions.
++ */
++typedef int (*dwc_isoc_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
++					 void *req_handle, int proc_buf_num);
++/** This function should handle any SETUP request that cannot be handled by the
++ * PCD Core.  This includes most GET_DESCRIPTORs, SET_CONFIGS, Any
++ * class-specific requests, etc.  The function must non-blocking.
++ *
++ * Returns 0 on success.
++ * Returns -DWC_E_NOT_SUPPORTED if the request is not supported.
++ * Returns -DWC_E_INVALID if the setup request had invalid parameters or bytes.
++ * Returns -DWC_E_SHUTDOWN on any other error. */
++typedef int (*dwc_setup_cb_t) (dwc_otg_pcd_t * pcd, uint8_t * bytes);
++/** This is called whenever the device has been disconnected.  The function
++ * driver should take appropriate action to clean up all pending requests in the
++ * PCD Core, remove all endpoints (except ep0), and initialize back to reset
++ * state. */
++typedef int (*dwc_disconnect_cb_t) (dwc_otg_pcd_t * pcd);
++/** This function is called when device has been connected. */
++typedef int (*dwc_connect_cb_t) (dwc_otg_pcd_t * pcd, int speed);
++/** This function is called when device has been suspended */
++typedef int (*dwc_suspend_cb_t) (dwc_otg_pcd_t * pcd);
++/** This function is called when device has received LPM tokens, i.e.
++ * device has been sent to sleep state. */
++typedef int (*dwc_sleep_cb_t) (dwc_otg_pcd_t * pcd);
++/** This function is called when device has been resumed
++ * from suspend(L2) or L1 sleep state. */
++typedef int (*dwc_resume_cb_t) (dwc_otg_pcd_t * pcd);
++/** This function is called whenever hnp params has been changed.
++ * User can call get_b_hnp_enable, get_a_hnp_support, get_a_alt_hnp_support functions
++ * to get hnp parameters. */
++typedef int (*dwc_hnp_params_changed_cb_t) (dwc_otg_pcd_t * pcd);
++/** This function is called whenever USB RESET is detected. */
++typedef int (*dwc_reset_cb_t) (dwc_otg_pcd_t * pcd);
++
++typedef int (*cfi_setup_cb_t) (dwc_otg_pcd_t * pcd, void *ctrl_req_bytes);
++
++/**
++ *
++ * @param ep_handle	Void pointer to the usb_ep structure
++ * @param ereq_port Pointer to the extended request structure created in the
++ *					portable part.
++ */
++typedef int (*xiso_completion_cb_t) (dwc_otg_pcd_t * pcd, void *ep_handle,
++				     void *req_handle, int32_t status,
++				     void *ereq_port);
++/** Function Driver Ops Data Structure */
++struct dwc_otg_pcd_function_ops {
++	dwc_connect_cb_t connect;
++	dwc_disconnect_cb_t disconnect;
++	dwc_setup_cb_t setup;
++	dwc_completion_cb_t complete;
++	dwc_isoc_completion_cb_t isoc_complete;
++	dwc_suspend_cb_t suspend;
++	dwc_sleep_cb_t sleep;
++	dwc_resume_cb_t resume;
++	dwc_reset_cb_t reset;
++	dwc_hnp_params_changed_cb_t hnp_changed;
++	cfi_setup_cb_t cfi_setup;
++#ifdef DWC_UTE_PER_IO
++	xiso_completion_cb_t xisoc_complete;
++#endif
++};
++/** @} */
++
++/** @name Function Driver Functions */
++/** @{ */
++
++/** Call this function to get pointer on dwc_otg_pcd_t,
++ * this pointer will be used for all PCD API functions.
++ *
++ * @param core_if The DWC_OTG Core
++ */
++extern dwc_otg_pcd_t *dwc_otg_pcd_init(dwc_otg_device_t *otg_dev);
++
++/** Frees PCD allocated by dwc_otg_pcd_init
++ *
++ * @param pcd The PCD
++ */
++extern void dwc_otg_pcd_remove(dwc_otg_pcd_t * pcd);
++
++/** Call this to bind the function driver to the PCD Core.
++ *
++ * @param pcd Pointer on dwc_otg_pcd_t returned by dwc_otg_pcd_init function.
++ * @param fops The Function Driver Ops data structure containing pointers to all callbacks.
++ */
++extern void dwc_otg_pcd_start(dwc_otg_pcd_t * pcd,
++			      const struct dwc_otg_pcd_function_ops *fops);
++
++/** Enables an endpoint for use.  This function enables an endpoint in
++ * the PCD.  The endpoint is described by the ep_desc which has the
++ * same format as a USB ep descriptor.  The ep_handle parameter is used to refer
++ * to the endpoint from other API functions and in callbacks.  Normally this
++ * should be called after a SET_CONFIGURATION/SET_INTERFACE to configure the
++ * core for that interface.
++ *
++ * Returns -DWC_E_INVALID if invalid parameters were passed.
++ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
++ * Returns 0 on success.
++ *
++ * @param pcd The PCD
++ * @param ep_desc Endpoint descriptor
++ * @param usb_ep Handle on endpoint, that will be used to identify endpoint.
++ */
++extern int dwc_otg_pcd_ep_enable(dwc_otg_pcd_t * pcd,
++				 const uint8_t * ep_desc, void *usb_ep);
++
++/** Disable the endpoint referenced by ep_handle.
++ *
++ * Returns -DWC_E_INVALID if invalid parameters were passed.
++ * Returns -DWC_E_SHUTDOWN if any other error occurred.
++ * Returns 0 on success. */
++extern int dwc_otg_pcd_ep_disable(dwc_otg_pcd_t * pcd, void *ep_handle);
++
++/** Queue a data transfer request on the endpoint referenced by ep_handle.
++ * After the transfer is completes, the complete callback will be called with
++ * the request status.
++ *
++ * @param pcd The PCD
++ * @param ep_handle The handle of the endpoint
++ * @param buf The buffer for the data
++ * @param dma_buf The DMA buffer for the data
++ * @param buflen The length of the data transfer
++ * @param zero Specifies whether to send zero length last packet.
++ * @param req_handle Set this handle to any value to use to reference this
++ * request in the ep_dequeue function or from the complete callback
++ * @param atomic_alloc If driver need to perform atomic allocations
++ * for internal data structures.
++ *
++ * Returns -DWC_E_INVALID if invalid parameters were passed.
++ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
++ * Returns 0 on success. */
++extern int dwc_otg_pcd_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
++				uint8_t * buf, dwc_dma_t dma_buf,
++				uint32_t buflen, int zero, void *req_handle,
++				int atomic_alloc);
++#ifdef DWC_UTE_PER_IO
++/**
++ *
++ * @param ereq_nonport	Pointer to the extended request part of the
++ *						usb_request structure defined in usb_gadget.h file.
++ */
++extern int dwc_otg_pcd_xiso_ep_queue(dwc_otg_pcd_t * pcd, void *ep_handle,
++				     uint8_t * buf, dwc_dma_t dma_buf,
++				     uint32_t buflen, int zero,
++				     void *req_handle, int atomic_alloc,
++				     void *ereq_nonport);
++
++#endif
++
++/** De-queue the specified data transfer that has not yet completed.
++ *
++ * Returns -DWC_E_INVALID if invalid parameters were passed.
++ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
++ * Returns 0 on success. */
++extern int dwc_otg_pcd_ep_dequeue(dwc_otg_pcd_t * pcd, void *ep_handle,
++				  void *req_handle);
++
++/** Halt (STALL) an endpoint or clear it.
++ *
++ * Returns -DWC_E_INVALID if invalid parameters were passed.
++ * Returns -DWC_E_SHUTDOWN if any other error ocurred.
++ * Returns -DWC_E_AGAIN if the STALL cannot be sent and must be tried again later
++ * Returns 0 on success. */
++extern int dwc_otg_pcd_ep_halt(dwc_otg_pcd_t * pcd, void *ep_handle, int value);
++
++/** This function */
++extern int dwc_otg_pcd_ep_wedge(dwc_otg_pcd_t * pcd, void *ep_handle);
++
++/** This function should be called on every hardware interrupt */
++extern int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t * pcd);
++
++/** This function returns current frame number */
++extern int dwc_otg_pcd_get_frame_number(dwc_otg_pcd_t * pcd);
++
++/**
++ * Start isochronous transfers on the endpoint referenced by ep_handle.
++ * For isochronous transfers duble buffering is used.
++ * After processing each of buffers comlete callback will be called with
++ * status for each transaction.
++ *
++ * @param pcd The PCD
++ * @param ep_handle The handle of the endpoint
++ * @param buf0 The virtual address of first data buffer
++ * @param buf1 The virtual address of second data buffer
++ * @param dma0 The DMA address of first data buffer
++ * @param dma1 The DMA address of second data buffer
++ * @param sync_frame Data pattern frame number
++ * @param dp_frame Data size for pattern frame
++ * @param data_per_frame Data size for regular frame
++ * @param start_frame Frame number to start transfers, if -1 then start transfers ASAP.
++ * @param buf_proc_intrvl Interval of ISOC Buffer processing
++ * @param req_handle Handle of ISOC request
++ * @param atomic_alloc Specefies whether to perform atomic allocation for
++ * 			internal data structures.
++ *
++ * Returns -DWC_E_NO_MEMORY if there is no enough memory.
++ * Returns -DWC_E_INVALID if incorrect arguments are passed to the function.
++ * Returns -DW_E_SHUTDOWN for any other error.
++ * Returns 0 on success
++ */
++extern int dwc_otg_pcd_iso_ep_start(dwc_otg_pcd_t * pcd, void *ep_handle,
++				    uint8_t * buf0, uint8_t * buf1,
++				    dwc_dma_t dma0, dwc_dma_t dma1,
++				    int sync_frame, int dp_frame,
++				    int data_per_frame, int start_frame,
++				    int buf_proc_intrvl, void *req_handle,
++				    int atomic_alloc);
++
++/** Stop ISOC transfers on endpoint referenced by ep_handle.
++ *
++ * @param pcd The PCD
++ * @param ep_handle The handle of the endpoint
++ * @param req_handle Handle of ISOC request
++ *
++ * Returns -DWC_E_INVALID if incorrect arguments are passed to the function
++ * Returns 0 on success
++ */
++int dwc_otg_pcd_iso_ep_stop(dwc_otg_pcd_t * pcd, void *ep_handle,
++			    void *req_handle);
++
++/** Get ISOC packet status.
++ *
++ * @param pcd The PCD
++ * @param ep_handle The handle of the endpoint
++ * @param iso_req_handle Isochronoush request handle
++ * @param packet Number of packet
++ * @param status Out parameter for returning status
++ * @param actual Out parameter for returning actual length
++ * @param offset Out parameter for returning offset
++ *
++ */
++extern void dwc_otg_pcd_get_iso_packet_params(dwc_otg_pcd_t * pcd,
++					      void *ep_handle,
++					      void *iso_req_handle, int packet,
++					      int *status, int *actual,
++					      int *offset);
++
++/** Get ISOC packet count.
++ *
++ * @param pcd The PCD
++ * @param ep_handle The handle of the endpoint
++ * @param iso_req_handle
++ */
++extern int dwc_otg_pcd_get_iso_packet_count(dwc_otg_pcd_t * pcd,
++					    void *ep_handle,
++					    void *iso_req_handle);
++
++/** This function starts the SRP Protocol if no session is in progress. If
++ * a session is already in progress, but the device is suspended,
++ * remote wakeup signaling is started.
++ */
++extern int dwc_otg_pcd_wakeup(dwc_otg_pcd_t * pcd);
++
++/** This function returns 1 if LPM support is enabled, and 0 otherwise. */
++extern int dwc_otg_pcd_is_lpm_enabled(dwc_otg_pcd_t * pcd);
++
++/** This function returns 1 if remote wakeup is allowed and 0, otherwise. */
++extern int dwc_otg_pcd_get_rmwkup_enable(dwc_otg_pcd_t * pcd);
++
++/** Initiate SRP */
++extern void dwc_otg_pcd_initiate_srp(dwc_otg_pcd_t * pcd);
++
++/** Starts remote wakeup signaling. */
++extern void dwc_otg_pcd_remote_wakeup(dwc_otg_pcd_t * pcd, int set);
++
++/** Starts micorsecond soft disconnect. */
++extern void dwc_otg_pcd_disconnect_us(dwc_otg_pcd_t * pcd, int no_of_usecs);
++/** This function returns whether device is dualspeed.*/
++extern uint32_t dwc_otg_pcd_is_dualspeed(dwc_otg_pcd_t * pcd);
++
++/** This function returns whether device is otg. */
++extern uint32_t dwc_otg_pcd_is_otg(dwc_otg_pcd_t * pcd);
++
++/** These functions allow to get hnp parameters */
++extern uint32_t get_b_hnp_enable(dwc_otg_pcd_t * pcd);
++extern uint32_t get_a_hnp_support(dwc_otg_pcd_t * pcd);
++extern uint32_t get_a_alt_hnp_support(dwc_otg_pcd_t * pcd);
++
++/** CFI specific Interface functions */
++/** Allocate a cfi buffer */
++extern uint8_t *cfiw_ep_alloc_buffer(dwc_otg_pcd_t * pcd, void *pep,
++				     dwc_dma_t * addr, size_t buflen,
++				     int flags);
++
++/******************************************************************************/
++
++/** @} */
++
++#endif				/* __DWC_PCD_IF_H__ */
++
++#endif				/* DWC_HOST_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
+@@ -0,0 +1,5148 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_intr.c $
++ * $Revision: #116 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++#ifndef DWC_HOST_ONLY
++
++#include "dwc_otg_pcd.h"
++
++#ifdef DWC_UTE_CFI
++#include "dwc_otg_cfi.h"
++#endif
++
++#ifdef DWC_UTE_PER_IO
++extern void complete_xiso_ep(dwc_otg_pcd_ep_t * ep);
++#endif
++//#define PRINT_CFI_DMA_DESCS
++
++#define DEBUG_EP0
++
++/**
++ * This function updates OTG.
++ */
++static void dwc_otg_pcd_update_otg(dwc_otg_pcd_t * pcd, const unsigned reset)
++{
++
++	if (reset) {
++		pcd->b_hnp_enable = 0;
++		pcd->a_hnp_support = 0;
++		pcd->a_alt_hnp_support = 0;
++	}
++
++	if (pcd->fops->hnp_changed) {
++		pcd->fops->hnp_changed(pcd);
++	}
++}
++
++/** @file
++ * This file contains the implementation of the PCD Interrupt handlers.
++ *
++ * The PCD handles the device interrupts.  Many conditions can cause a
++ * device interrupt. When an interrupt occurs, the device interrupt
++ * service routine determines the cause of the interrupt and
++ * dispatches handling to the appropriate function. These interrupt
++ * handling functions are described below.
++ * All interrupt registers are processed from LSB to MSB.
++ */
++
++/**
++ * This function prints the ep0 state for debug purposes.
++ */
++static inline void print_ep0_state(dwc_otg_pcd_t * pcd)
++{
++#ifdef DEBUG
++	char str[40];
++
++	switch (pcd->ep0state) {
++	case EP0_DISCONNECT:
++		dwc_strcpy(str, "EP0_DISCONNECT");
++		break;
++	case EP0_IDLE:
++		dwc_strcpy(str, "EP0_IDLE");
++		break;
++	case EP0_IN_DATA_PHASE:
++		dwc_strcpy(str, "EP0_IN_DATA_PHASE");
++		break;
++	case EP0_OUT_DATA_PHASE:
++		dwc_strcpy(str, "EP0_OUT_DATA_PHASE");
++		break;
++	case EP0_IN_STATUS_PHASE:
++		dwc_strcpy(str, "EP0_IN_STATUS_PHASE");
++		break;
++	case EP0_OUT_STATUS_PHASE:
++		dwc_strcpy(str, "EP0_OUT_STATUS_PHASE");
++		break;
++	case EP0_STALL:
++		dwc_strcpy(str, "EP0_STALL");
++		break;
++	default:
++		dwc_strcpy(str, "EP0_INVALID");
++	}
++
++	DWC_DEBUGPL(DBG_ANY, "%s(%d)\n", str, pcd->ep0state);
++#endif
++}
++
++/**
++ * This function calculate the size of the payload in the memory
++ * for out endpoints and prints size for debug purposes(used in
++ * 2.93a DevOutNak feature).
++ */
++static inline void print_memory_payload(dwc_otg_pcd_t * pcd,  dwc_ep_t * ep)
++{
++#ifdef DEBUG
++	deptsiz_data_t deptsiz_init = {.d32 = 0 };
++	deptsiz_data_t deptsiz_updt = {.d32 = 0 };
++	int pack_num;
++	unsigned payload;
++
++	deptsiz_init.d32 = pcd->core_if->start_doeptsiz_val[ep->num];
++	deptsiz_updt.d32 =
++		DWC_READ_REG32(&pcd->core_if->dev_if->
++						out_ep_regs[ep->num]->doeptsiz);
++	/* Payload will be */
++	payload = deptsiz_init.b.xfersize - deptsiz_updt.b.xfersize;
++	/* Packet count is decremented every time a packet
++	 * is written to the RxFIFO not in to the external memory
++	 * So, if payload == 0, then it means no packet was sent to ext memory*/
++	pack_num = (!payload) ? 0 : (deptsiz_init.b.pktcnt - deptsiz_updt.b.pktcnt);
++	DWC_DEBUGPL(DBG_PCDV,
++		"Payload for EP%d-%s\n",
++		ep->num, (ep->is_in ? "IN" : "OUT"));
++	DWC_DEBUGPL(DBG_PCDV,
++		"Number of transfered bytes = 0x%08x\n", payload);
++	DWC_DEBUGPL(DBG_PCDV,
++		"Number of transfered packets = %d\n", pack_num);
++#endif
++}
++
++
++#ifdef DWC_UTE_CFI
++static inline void print_desc(struct dwc_otg_dma_desc *ddesc,
++			      const uint8_t * epname, int descnum)
++{
++	CFI_INFO
++	    ("%s DMA_DESC(%d) buf=0x%08x bytes=0x%04x; sp=0x%x; l=0x%x; sts=0x%02x; bs=0x%02x\n",
++	     epname, descnum, ddesc->buf, ddesc->status.b.bytes,
++	     ddesc->status.b.sp, ddesc->status.b.l, ddesc->status.b.sts,
++	     ddesc->status.b.bs);
++}
++#endif
++
++/**
++ * This function returns pointer to in ep struct with number ep_num
++ */
++static inline dwc_otg_pcd_ep_t *get_in_ep(dwc_otg_pcd_t * pcd, uint32_t ep_num)
++{
++	int i;
++	int num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
++	if (ep_num == 0) {
++		return &pcd->ep0;
++	} else {
++		for (i = 0; i < num_in_eps; ++i) {
++			if (pcd->in_ep[i].dwc_ep.num == ep_num)
++				return &pcd->in_ep[i];
++		}
++		return 0;
++	}
++}
++
++/**
++ * This function returns pointer to out ep struct with number ep_num
++ */
++static inline dwc_otg_pcd_ep_t *get_out_ep(dwc_otg_pcd_t * pcd, uint32_t ep_num)
++{
++	int i;
++	int num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
++	if (ep_num == 0) {
++		return &pcd->ep0;
++	} else {
++		for (i = 0; i < num_out_eps; ++i) {
++			if (pcd->out_ep[i].dwc_ep.num == ep_num)
++				return &pcd->out_ep[i];
++		}
++		return 0;
++	}
++}
++
++/**
++ * This functions gets a pointer to an EP from the wIndex address
++ * value of the control request.
++ */
++dwc_otg_pcd_ep_t *get_ep_by_addr(dwc_otg_pcd_t * pcd, u16 wIndex)
++{
++	dwc_otg_pcd_ep_t *ep;
++	uint32_t ep_num = UE_GET_ADDR(wIndex);
++
++	if (ep_num == 0) {
++		ep = &pcd->ep0;
++	} else if (UE_GET_DIR(wIndex) == UE_DIR_IN) {	/* in ep */
++		ep = &pcd->in_ep[ep_num - 1];
++	} else {
++		ep = &pcd->out_ep[ep_num - 1];
++	}
++
++	return ep;
++}
++
++/**
++ * This function checks the EP request queue, if the queue is not
++ * empty the next request is started.
++ */
++void start_next_request(dwc_otg_pcd_ep_t * ep)
++{
++	dwc_otg_pcd_request_t *req = 0;
++	uint32_t max_transfer =
++	    GET_CORE_IF(ep->pcd)->core_params->max_transfer_size;
++
++#ifdef DWC_UTE_CFI
++	struct dwc_otg_pcd *pcd;
++	pcd = ep->pcd;
++#endif
++
++	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		req = DWC_CIRCLEQ_FIRST(&ep->queue);
++
++#ifdef DWC_UTE_CFI
++		if (ep->dwc_ep.buff_mode != BM_STANDARD) {
++			ep->dwc_ep.cfi_req_len = req->length;
++			pcd->cfi->ops.build_descriptors(pcd->cfi, pcd, ep, req);
++		} else {
++#endif
++			/* Setup and start the Transfer */
++			if (req->dw_align_buf) {
++				ep->dwc_ep.dma_addr = req->dw_align_buf_dma;
++				ep->dwc_ep.start_xfer_buff = req->dw_align_buf;
++				ep->dwc_ep.xfer_buff = req->dw_align_buf;
++			} else {
++				ep->dwc_ep.dma_addr = req->dma;
++				ep->dwc_ep.start_xfer_buff = req->buf;
++				ep->dwc_ep.xfer_buff = req->buf;
++			}
++			ep->dwc_ep.sent_zlp = 0;
++			ep->dwc_ep.total_len = req->length;
++			ep->dwc_ep.xfer_len = 0;
++			ep->dwc_ep.xfer_count = 0;
++
++			ep->dwc_ep.maxxfer = max_transfer;
++			if (GET_CORE_IF(ep->pcd)->dma_desc_enable) {
++				uint32_t out_max_xfer = DDMA_MAX_TRANSFER_SIZE
++				    - (DDMA_MAX_TRANSFER_SIZE % 4);
++				if (ep->dwc_ep.is_in) {
++					if (ep->dwc_ep.maxxfer >
++					    DDMA_MAX_TRANSFER_SIZE) {
++						ep->dwc_ep.maxxfer =
++						    DDMA_MAX_TRANSFER_SIZE;
++					}
++				} else {
++					if (ep->dwc_ep.maxxfer > out_max_xfer) {
++						ep->dwc_ep.maxxfer =
++						    out_max_xfer;
++					}
++				}
++			}
++			if (ep->dwc_ep.maxxfer < ep->dwc_ep.total_len) {
++				ep->dwc_ep.maxxfer -=
++				    (ep->dwc_ep.maxxfer % ep->dwc_ep.maxpacket);
++			}
++			if (req->sent_zlp) {
++				if ((ep->dwc_ep.total_len %
++				     ep->dwc_ep.maxpacket == 0)
++				    && (ep->dwc_ep.total_len != 0)) {
++					ep->dwc_ep.sent_zlp = 1;
++				}
++
++			}
++#ifdef DWC_UTE_CFI
++		}
++#endif
++		dwc_otg_ep_start_transfer(GET_CORE_IF(ep->pcd), &ep->dwc_ep);
++	} else if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
++		DWC_PRINTF("There are no more ISOC requests \n");
++		ep->dwc_ep.frame_num = 0xFFFFFFFF;
++	}
++}
++
++/**
++ * This function handles the SOF Interrupts. At this time the SOF
++ * Interrupt is disabled.
++ */
++int32_t dwc_otg_pcd_handle_sof_intr(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++
++	gintsts_data_t gintsts;
++
++	DWC_DEBUGPL(DBG_PCD, "SOF\n");
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.sofintr = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This function handles the Rx Status Queue Level Interrupt, which
++ * indicates that there is a least one packet in the Rx FIFO.  The
++ * packets are moved from the FIFO to memory, where they will be
++ * processed when the Endpoint Interrupt Register indicates Transfer
++ * Complete or SETUP Phase Done.
++ *
++ * Repeat the following until the Rx Status Queue is empty:
++ *	 -# Read the Receive Status Pop Register (GRXSTSP) to get Packet
++ *		info
++ *	 -# If Receive FIFO is empty then skip to step Clear the interrupt
++ *		and exit
++ *	 -# If SETUP Packet call dwc_otg_read_setup_packet to copy the
++ *		SETUP data to the buffer
++ *	 -# If OUT Data Packet call dwc_otg_read_packet to copy the data
++ *		to the destination buffer
++ */
++int32_t dwc_otg_pcd_handle_rx_status_q_level_intr(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	gintmsk_data_t gintmask = {.d32 = 0 };
++	device_grxsts_data_t status;
++	dwc_otg_pcd_ep_t *ep;
++	gintsts_data_t gintsts;
++#ifdef DEBUG
++	static char *dpid_str[] = { "D0", "D2", "D1", "MDATA" };
++#endif
++
++	//DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, _pcd);
++	/* Disable the Rx Status Queue Level interrupt */
++	gintmask.b.rxstsqlvl = 1;
++	DWC_MODIFY_REG32(&global_regs->gintmsk, gintmask.d32, 0);
++
++	/* Get the Status from the top of the FIFO */
++	status.d32 = DWC_READ_REG32(&global_regs->grxstsp);
++
++	DWC_DEBUGPL(DBG_PCD, "EP:%d BCnt:%d DPID:%s "
++		    "pktsts:%x Frame:%d(0x%0x)\n",
++		    status.b.epnum, status.b.bcnt,
++		    dpid_str[status.b.dpid],
++		    status.b.pktsts, status.b.fn, status.b.fn);
++	/* Get pointer to EP structure */
++	ep = get_out_ep(pcd, status.b.epnum);
++
++	switch (status.b.pktsts) {
++	case DWC_DSTS_GOUT_NAK:
++		DWC_DEBUGPL(DBG_PCDV, "Global OUT NAK\n");
++		break;
++	case DWC_STS_DATA_UPDT:
++		DWC_DEBUGPL(DBG_PCDV, "OUT Data Packet\n");
++		if (status.b.bcnt && ep->dwc_ep.xfer_buff) {
++			/** @todo NGS Check for buffer overflow? */
++			dwc_otg_read_packet(core_if,
++					    ep->dwc_ep.xfer_buff,
++					    status.b.bcnt);
++			ep->dwc_ep.xfer_count += status.b.bcnt;
++			ep->dwc_ep.xfer_buff += status.b.bcnt;
++		}
++		break;
++	case DWC_STS_XFER_COMP:
++		DWC_DEBUGPL(DBG_PCDV, "OUT Complete\n");
++		break;
++	case DWC_DSTS_SETUP_COMP:
++#ifdef DEBUG_EP0
++		DWC_DEBUGPL(DBG_PCDV, "Setup Complete\n");
++#endif
++		break;
++	case DWC_DSTS_SETUP_UPDT:
++		dwc_otg_read_setup_packet(core_if, pcd->setup_pkt->d32);
++#ifdef DEBUG_EP0
++		DWC_DEBUGPL(DBG_PCD,
++			    "SETUP PKT: %02x.%02x v%04x i%04x l%04x\n",
++			    pcd->setup_pkt->req.bmRequestType,
++			    pcd->setup_pkt->req.bRequest,
++			    UGETW(pcd->setup_pkt->req.wValue),
++			    UGETW(pcd->setup_pkt->req.wIndex),
++			    UGETW(pcd->setup_pkt->req.wLength));
++#endif
++		ep->dwc_ep.xfer_count += status.b.bcnt;
++		break;
++	default:
++		DWC_DEBUGPL(DBG_PCDV, "Invalid Packet Status (0x%0x)\n",
++			    status.b.pktsts);
++		break;
++	}
++
++	/* Enable the Rx Status Queue Level interrupt */
++	DWC_MODIFY_REG32(&global_regs->gintmsk, 0, gintmask.d32);
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.rxstsqlvl = 1;
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	//DWC_DEBUGPL(DBG_PCDV, "EXIT: %s\n", __func__);
++	return 1;
++}
++
++/**
++ * This function examines the Device IN Token Learning Queue to
++ * determine the EP number of the last IN token received.  This
++ * implementation is for the Mass Storage device where there are only
++ * 2 IN EPs (Control-IN and BULK-IN).
++ *
++ * The EP numbers for the first six IN Tokens are in DTKNQR1 and there
++ * are 8 EP Numbers in each of the other possible DTKNQ Registers.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ *
++ */
++static inline int get_ep_of_last_in_token(dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_device_global_regs_t *dev_global_regs =
++	    core_if->dev_if->dev_global_regs;
++	const uint32_t TOKEN_Q_DEPTH = core_if->hwcfg2.b.dev_token_q_depth;
++	/* Number of Token Queue Registers */
++	const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8;
++	dtknq1_data_t dtknqr1;
++	uint32_t in_tkn_epnums[4];
++	int ndx = 0;
++	int i = 0;
++	volatile uint32_t *addr = &dev_global_regs->dtknqr1;
++	int epnum = 0;
++
++	//DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH);
++
++	/* Read the DTKNQ Registers */
++	for (i = 0; i < DTKNQ_REG_CNT; i++) {
++		in_tkn_epnums[i] = DWC_READ_REG32(addr);
++		DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i + 1,
++			    in_tkn_epnums[i]);
++		if (addr == &dev_global_regs->dvbusdis) {
++			addr = &dev_global_regs->dtknqr3_dthrctl;
++		} else {
++			++addr;
++		}
++
++	}
++
++	/* Copy the DTKNQR1 data to the bit field. */
++	dtknqr1.d32 = in_tkn_epnums[0];
++	/* Get the EP numbers */
++	in_tkn_epnums[0] = dtknqr1.b.epnums0_5;
++	ndx = dtknqr1.b.intknwptr - 1;
++
++	//DWC_DEBUGPL(DBG_PCDV,"ndx=%d\n",ndx);
++	if (ndx == -1) {
++		/** @todo Find a simpler way to calculate the max
++		 * queue position.*/
++		int cnt = TOKEN_Q_DEPTH;
++		if (TOKEN_Q_DEPTH <= 6) {
++			cnt = TOKEN_Q_DEPTH - 1;
++		} else if (TOKEN_Q_DEPTH <= 14) {
++			cnt = TOKEN_Q_DEPTH - 7;
++		} else if (TOKEN_Q_DEPTH <= 22) {
++			cnt = TOKEN_Q_DEPTH - 15;
++		} else {
++			cnt = TOKEN_Q_DEPTH - 23;
++		}
++		epnum = (in_tkn_epnums[DTKNQ_REG_CNT - 1] >> (cnt * 4)) & 0xF;
++	} else {
++		if (ndx <= 5) {
++			epnum = (in_tkn_epnums[0] >> (ndx * 4)) & 0xF;
++		} else if (ndx <= 13) {
++			ndx -= 6;
++			epnum = (in_tkn_epnums[1] >> (ndx * 4)) & 0xF;
++		} else if (ndx <= 21) {
++			ndx -= 14;
++			epnum = (in_tkn_epnums[2] >> (ndx * 4)) & 0xF;
++		} else if (ndx <= 29) {
++			ndx -= 22;
++			epnum = (in_tkn_epnums[3] >> (ndx * 4)) & 0xF;
++		}
++	}
++	//DWC_DEBUGPL(DBG_PCD,"epnum=%d\n",epnum);
++	return epnum;
++}
++
++/**
++ * This interrupt occurs when the non-periodic Tx FIFO is half-empty.
++ * The active request is checked for the next packet to be loaded into
++ * the non-periodic Tx FIFO.
++ */
++int32_t dwc_otg_pcd_handle_np_tx_fifo_empty_intr(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	dwc_otg_dev_in_ep_regs_t *ep_regs;
++	gnptxsts_data_t txstatus = {.d32 = 0 };
++	gintsts_data_t gintsts;
++
++	int epnum = 0;
++	dwc_otg_pcd_ep_t *ep = 0;
++	uint32_t len = 0;
++	int dwords;
++
++	/* Get the epnum from the IN Token Learning Queue. */
++	epnum = get_ep_of_last_in_token(core_if);
++	ep = get_in_ep(pcd, epnum);
++
++	DWC_DEBUGPL(DBG_PCD, "NP TxFifo Empty: %d \n", epnum);
++
++	ep_regs = core_if->dev_if->in_ep_regs[epnum];
++
++	len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
++	if (len > ep->dwc_ep.maxpacket) {
++		len = ep->dwc_ep.maxpacket;
++	}
++	dwords = (len + 3) / 4;
++
++	/* While there is space in the queue and space in the FIFO and
++	 * More data to tranfer, Write packets to the Tx FIFO */
++	txstatus.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
++	DWC_DEBUGPL(DBG_PCDV, "b4 GNPTXSTS=0x%08x\n", txstatus.d32);
++
++	while (txstatus.b.nptxqspcavail > 0 &&
++	       txstatus.b.nptxfspcavail > dwords &&
++	       ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len) {
++		/* Write the FIFO */
++		dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
++		len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
++
++		if (len > ep->dwc_ep.maxpacket) {
++			len = ep->dwc_ep.maxpacket;
++		}
++
++		dwords = (len + 3) / 4;
++		txstatus.d32 = DWC_READ_REG32(&global_regs->gnptxsts);
++		DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n", txstatus.d32);
++	}
++
++	DWC_DEBUGPL(DBG_PCDV, "GNPTXSTS=0x%08x\n",
++		    DWC_READ_REG32(&global_regs->gnptxsts));
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.nptxfempty = 1;
++	DWC_WRITE_REG32(&global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This function is called when dedicated Tx FIFO Empty interrupt occurs.
++ * The active request is checked for the next packet to be loaded into
++ * apropriate Tx FIFO.
++ */
++static int32_t write_empty_tx_fifo(dwc_otg_pcd_t * pcd, uint32_t epnum)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	dwc_otg_dev_in_ep_regs_t *ep_regs;
++	dtxfsts_data_t txstatus = {.d32 = 0 };
++	dwc_otg_pcd_ep_t *ep = 0;
++	uint32_t len = 0;
++	int dwords;
++
++	ep = get_in_ep(pcd, epnum);
++
++	DWC_DEBUGPL(DBG_PCD, "Dedicated TxFifo Empty: %d \n", epnum);
++
++	ep_regs = core_if->dev_if->in_ep_regs[epnum];
++
++	len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
++
++	if (len > ep->dwc_ep.maxpacket) {
++		len = ep->dwc_ep.maxpacket;
++	}
++
++	dwords = (len + 3) / 4;
++
++	/* While there is space in the queue and space in the FIFO and
++	 * More data to tranfer, Write packets to the Tx FIFO */
++	txstatus.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
++	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum, txstatus.d32);
++
++	while (txstatus.b.txfspcavail > dwords &&
++	       ep->dwc_ep.xfer_count < ep->dwc_ep.xfer_len &&
++	       ep->dwc_ep.xfer_len != 0) {
++		/* Write the FIFO */
++		dwc_otg_ep_write_packet(core_if, &ep->dwc_ep, 0);
++
++		len = ep->dwc_ep.xfer_len - ep->dwc_ep.xfer_count;
++		if (len > ep->dwc_ep.maxpacket) {
++			len = ep->dwc_ep.maxpacket;
++		}
++
++		dwords = (len + 3) / 4;
++		txstatus.d32 =
++		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts);
++		DWC_DEBUGPL(DBG_PCDV, "dtxfsts[%d]=0x%08x\n", epnum,
++			    txstatus.d32);
++	}
++
++	DWC_DEBUGPL(DBG_PCDV, "b4 dtxfsts[%d]=0x%08x\n", epnum,
++		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dtxfsts));
++
++	return 1;
++}
++
++/**
++ * This function is called when the Device is disconnected. It stops
++ * any active requests and informs the Gadget driver of the
++ * disconnect.
++ */
++void dwc_otg_pcd_stop(dwc_otg_pcd_t * pcd)
++{
++	int i, num_in_eps, num_out_eps;
++	dwc_otg_pcd_ep_t *ep;
++
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_SPINLOCK(pcd->lock);
++
++	num_in_eps = GET_CORE_IF(pcd)->dev_if->num_in_eps;
++	num_out_eps = GET_CORE_IF(pcd)->dev_if->num_out_eps;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s() \n", __func__);
++	/* don't disconnect drivers more than once */
++	if (pcd->ep0state == EP0_DISCONNECT) {
++		DWC_DEBUGPL(DBG_ANY, "%s() Already Disconnected\n", __func__);
++		DWC_SPINUNLOCK(pcd->lock);
++		return;
++	}
++	pcd->ep0state = EP0_DISCONNECT;
++
++	/* Reset the OTG state. */
++	dwc_otg_pcd_update_otg(pcd, 1);
++
++	/* Disable the NP Tx Fifo Empty Interrupt. */
++	intr_mask.b.nptxfempty = 1;
++	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
++			 intr_mask.d32, 0);
++
++	/* Flush the FIFOs */
++	/**@todo NGS Flush Periodic FIFOs */
++	dwc_otg_flush_tx_fifo(GET_CORE_IF(pcd), 0x10);
++	dwc_otg_flush_rx_fifo(GET_CORE_IF(pcd));
++
++	/* prevent new request submissions, kill any outstanding requests  */
++	ep = &pcd->ep0;
++	dwc_otg_request_nuke(ep);
++	/* prevent new request submissions, kill any outstanding requests  */
++	for (i = 0; i < num_in_eps; i++) {
++		dwc_otg_pcd_ep_t *ep = &pcd->in_ep[i];
++		dwc_otg_request_nuke(ep);
++	}
++	/* prevent new request submissions, kill any outstanding requests  */
++	for (i = 0; i < num_out_eps; i++) {
++		dwc_otg_pcd_ep_t *ep = &pcd->out_ep[i];
++		dwc_otg_request_nuke(ep);
++	}
++
++	/* report disconnect; the driver is already quiesced */
++	if (pcd->fops->disconnect) {
++		DWC_SPINUNLOCK(pcd->lock);
++		pcd->fops->disconnect(pcd);
++		DWC_SPINLOCK(pcd->lock);
++	}
++	DWC_SPINUNLOCK(pcd->lock);
++}
++
++/**
++ * This interrupt indicates that ...
++ */
++int32_t dwc_otg_pcd_handle_i2c_intr(dwc_otg_pcd_t * pcd)
++{
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	gintsts_data_t gintsts;
++
++	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "i2cintr");
++	intr_mask.b.i2cintr = 1;
++	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
++			 intr_mask.d32, 0);
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.i2cintr = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++	return 1;
++}
++
++/**
++ * This interrupt indicates that ...
++ */
++int32_t dwc_otg_pcd_handle_early_suspend_intr(dwc_otg_pcd_t * pcd)
++{
++	gintsts_data_t gintsts;
++#if defined(VERBOSE)
++	DWC_PRINTF("Early Suspend Detected\n");
++#endif
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.erlysuspend = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++	return 1;
++}
++
++/**
++ * This function configures EPO to receive SETUP packets.
++ *
++ * @todo NGS: Update the comments from the HW FS.
++ *
++ *	-# Program the following fields in the endpoint specific registers
++ *	for Control OUT EP 0, in order to receive a setup packet
++ *	- DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
++ *	  setup packets)
++ *	- DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
++ *	  to back setup packets)
++ *		- In DMA mode, DOEPDMA0 Register with a memory address to
++ *		  store any setup packets received
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param pcd	  Programming view of the PCD.
++ */
++static inline void ep0_out_start(dwc_otg_core_if_t * core_if,
++				 dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	deptsiz0_data_t doeptsize0 = {.d32 = 0 };
++	dwc_otg_dev_dma_desc_t *dma_desc;
++	depctl_data_t doepctl = {.d32 = 0 };
++
++#ifdef VERBOSE
++	DWC_DEBUGPL(DBG_PCDV, "%s() doepctl0=%0x\n", __func__,
++		    DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
++#endif
++	if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++		doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl);
++		if (doepctl.b.epena) {
++			return;
++		}
++	}
++
++	doeptsize0.b.supcnt = 3;
++	doeptsize0.b.pktcnt = 1;
++	doeptsize0.b.xfersize = 8 * 3;
++
++	if (core_if->dma_enable) {
++		if (!core_if->dma_desc_enable) {
++			/** put here as for Hermes mode deptisz register should not be written */
++			DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doeptsiz,
++					doeptsize0.d32);
++
++			/** @todo dma needs to handle multiple setup packets (up to 3) */
++			DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepdma,
++					pcd->setup_pkt_dma_handle);
++		} else {
++			dev_if->setup_desc_index =
++			    (dev_if->setup_desc_index + 1) & 1;
++			dma_desc =
++			    dev_if->setup_desc_addr[dev_if->setup_desc_index];
++
++			/** DMA Descriptor Setup */
++			dma_desc->status.b.bs = BS_HOST_BUSY;
++			if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++				dma_desc->status.b.sr = 0;
++				dma_desc->status.b.mtrf = 0;
++			}
++			dma_desc->status.b.l = 1;
++			dma_desc->status.b.ioc = 1;
++			dma_desc->status.b.bytes = pcd->ep0.dwc_ep.maxpacket;
++			dma_desc->buf = pcd->setup_pkt_dma_handle;
++			dma_desc->status.b.sts = 0;
++			dma_desc->status.b.bs = BS_HOST_READY;
++
++			/** DOEPDMA0 Register write */
++			DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepdma,
++					dev_if->dma_setup_desc_addr
++					[dev_if->setup_desc_index]);
++		}
++
++	} else {
++		/** put here as for Hermes mode deptisz register should not be written */
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doeptsiz,
++				doeptsize0.d32);
++	}
++
++	/** DOEPCTL0 Register write cnak will be set after setup interrupt */
++	doepctl.d32 = 0;
++	doepctl.b.epena = 1;
++	if (core_if->snpsid <= OTG_CORE_REV_2_94a) {
++	doepctl.b.cnak = 1;
++	DWC_WRITE_REG32(&dev_if->out_ep_regs[0]->doepctl, doepctl.d32);
++	} else {
++		DWC_MODIFY_REG32(&dev_if->out_ep_regs[0]->doepctl, 0, doepctl.d32);
++	}
++
++#ifdef VERBOSE
++	DWC_DEBUGPL(DBG_PCDV, "doepctl0=%0x\n",
++		    DWC_READ_REG32(&dev_if->out_ep_regs[0]->doepctl));
++	DWC_DEBUGPL(DBG_PCDV, "diepctl0=%0x\n",
++		    DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl));
++#endif
++}
++
++/**
++ * This interrupt occurs when a USB Reset is detected. When the USB
++ * Reset Interrupt occurs the device state is set to DEFAULT and the
++ * EP0 state is set to IDLE.
++ *	-#	Set the NAK bit for all OUT endpoints (DOEPCTLn.SNAK = 1)
++ *	-#	Unmask the following interrupt bits
++ *		- DAINTMSK.INEP0 = 1 (Control 0 IN endpoint)
++ *	- DAINTMSK.OUTEP0 = 1 (Control 0 OUT endpoint)
++ *	- DOEPMSK.SETUP = 1
++ *	- DOEPMSK.XferCompl = 1
++ *	- DIEPMSK.XferCompl = 1
++ *	- DIEPMSK.TimeOut = 1
++ *	-# Program the following fields in the endpoint specific registers
++ *	for Control OUT EP 0, in order to receive a setup packet
++ *	- DOEPTSIZ0.Packet Count = 3 (To receive up to 3 back to back
++ *	  setup packets)
++ *	- DOEPTSIZE0.Transfer Size = 24 Bytes (To receive up to 3 back
++ *	  to back setup packets)
++ *		- In DMA mode, DOEPDMA0 Register with a memory address to
++ *		  store any setup packets received
++ * At this point, all the required initialization, except for enabling
++ * the control 0 OUT endpoint is done, for receiving SETUP packets.
++ */
++int32_t dwc_otg_pcd_handle_usb_reset_intr(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	depctl_data_t doepctl = {.d32 = 0 };
++	depctl_data_t diepctl = {.d32 = 0 };
++	daint_data_t daintmsk = {.d32 = 0 };
++	doepmsk_data_t doepmsk = {.d32 = 0 };
++	diepmsk_data_t diepmsk = {.d32 = 0 };
++	dcfg_data_t dcfg = {.d32 = 0 };
++	grstctl_t resetctl = {.d32 = 0 };
++	dctl_data_t dctl = {.d32 = 0 };
++	int i = 0;
++	gintsts_data_t gintsts;
++	pcgcctl_data_t power = {.d32 = 0 };
++
++	power.d32 = DWC_READ_REG32(core_if->pcgcctl);
++	if (power.b.stoppclk) {
++		power.d32 = 0;
++		power.b.stoppclk = 1;
++		DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
++
++		power.b.pwrclmp = 1;
++		DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
++
++		power.b.rstpdwnmodule = 1;
++		DWC_MODIFY_REG32(core_if->pcgcctl, power.d32, 0);
++	}
++
++	core_if->lx_state = DWC_OTG_L0;
++
++	DWC_PRINTF("USB RESET\n");
++#ifdef DWC_EN_ISOC
++	for (i = 1; i < 16; ++i) {
++		dwc_otg_pcd_ep_t *ep;
++		dwc_ep_t *dwc_ep;
++		ep = get_in_ep(pcd, i);
++		if (ep != 0) {
++			dwc_ep = &ep->dwc_ep;
++			dwc_ep->next_frame = 0xffffffff;
++		}
++	}
++#endif /* DWC_EN_ISOC */
++
++	/* reset the HNP settings */
++	dwc_otg_pcd_update_otg(pcd, 1);
++
++	/* Clear the Remote Wakeup Signalling */
++	dctl.b.rmtwkupsig = 1;
++	DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, 0);
++
++	/* Set NAK for all OUT EPs */
++	doepctl.b.snak = 1;
++	for (i = 0; i <= dev_if->num_out_eps; i++) {
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, doepctl.d32);
++	}
++
++	/* Flush the NP Tx FIFO */
++	dwc_otg_flush_tx_fifo(core_if, 0x10);
++	/* Flush the Learning Queue */
++	resetctl.b.intknqflsh = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
++
++	if (!core_if->core_params->en_multiple_tx_fifo && core_if->dma_enable) {
++		core_if->start_predict = 0;
++		for (i = 0; i<= core_if->dev_if->num_in_eps; ++i) {
++			core_if->nextep_seq[i] = 0xff;	// 0xff - EP not active
++		}
++		core_if->nextep_seq[0] = 0;
++		core_if->first_in_nextep_seq = 0;
++		diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[0]->diepctl);
++		diepctl.b.nextep = 0;
++		DWC_WRITE_REG32(&dev_if->in_ep_regs[0]->diepctl, diepctl.d32);
++
++		/* Update IN Endpoint Mismatch Count by active IN NP EP count + 1 */
++		dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
++		dcfg.b.epmscnt = 2;
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
++
++		DWC_DEBUGPL(DBG_PCDV,
++			    "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
++			__func__, core_if->first_in_nextep_seq);
++		for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
++			DWC_DEBUGPL(DBG_PCDV, "%2d\n", core_if->nextep_seq[i]);
++		}
++	}
++
++	if (core_if->multiproc_int_enable) {
++		daintmsk.b.inep0 = 1;
++		daintmsk.b.outep0 = 1;
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->deachintmsk,
++				daintmsk.d32);
++
++		doepmsk.b.setup = 1;
++		doepmsk.b.xfercompl = 1;
++		doepmsk.b.ahberr = 1;
++		doepmsk.b.epdisabled = 1;
++
++		if ((core_if->dma_desc_enable) ||
++		    (core_if->dma_enable
++		     && core_if->snpsid >= OTG_CORE_REV_3_00a)) {
++			doepmsk.b.stsphsercvd = 1;
++		}
++		if (core_if->dma_desc_enable)
++			doepmsk.b.bna = 1;
++/*
++		doepmsk.b.babble = 1;
++		doepmsk.b.nyet = 1;
++
++		if (core_if->dma_enable) {
++			doepmsk.b.nak = 1;
++		}
++*/
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->doepeachintmsk[0],
++				doepmsk.d32);
++
++		diepmsk.b.xfercompl = 1;
++		diepmsk.b.timeout = 1;
++		diepmsk.b.epdisabled = 1;
++		diepmsk.b.ahberr = 1;
++		diepmsk.b.intknepmis = 1;
++		if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
++			diepmsk.b.intknepmis = 0;
++
++/*		if (core_if->dma_desc_enable) {
++			diepmsk.b.bna = 1;
++		}
++*/
++/*
++		if (core_if->dma_enable) {
++			diepmsk.b.nak = 1;
++		}
++*/
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->diepeachintmsk[0],
++				diepmsk.d32);
++	} else {
++		daintmsk.b.inep0 = 1;
++		daintmsk.b.outep0 = 1;
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->daintmsk,
++				daintmsk.d32);
++
++		doepmsk.b.setup = 1;
++		doepmsk.b.xfercompl = 1;
++		doepmsk.b.ahberr = 1;
++		doepmsk.b.epdisabled = 1;
++
++		if ((core_if->dma_desc_enable) ||
++		    (core_if->dma_enable
++		     && core_if->snpsid >= OTG_CORE_REV_3_00a)) {
++			doepmsk.b.stsphsercvd = 1;
++		}
++		if (core_if->dma_desc_enable)
++			doepmsk.b.bna = 1;
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->doepmsk, doepmsk.d32);
++
++		diepmsk.b.xfercompl = 1;
++		diepmsk.b.timeout = 1;
++		diepmsk.b.epdisabled = 1;
++		diepmsk.b.ahberr = 1;
++		if (!core_if->en_multiple_tx_fifo && core_if->dma_enable)
++			diepmsk.b.intknepmis = 0;
++/*
++		if (core_if->dma_desc_enable) {
++			diepmsk.b.bna = 1;
++		}
++*/
++
++		DWC_WRITE_REG32(&dev_if->dev_global_regs->diepmsk, diepmsk.d32);
++	}
++
++	/* Reset Device Address */
++	dcfg.d32 = DWC_READ_REG32(&dev_if->dev_global_regs->dcfg);
++	dcfg.b.devaddr = 0;
++	DWC_WRITE_REG32(&dev_if->dev_global_regs->dcfg, dcfg.d32);
++
++	/* setup EP0 to receive SETUP packets */
++	if (core_if->snpsid <= OTG_CORE_REV_2_94a)
++		ep0_out_start(core_if, pcd);
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.usbreset = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * Get the device speed from the device status register and convert it
++ * to USB speed constant.
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ */
++static int get_device_speed(dwc_otg_core_if_t * core_if)
++{
++	dsts_data_t dsts;
++	int speed = 0;
++	dsts.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dsts);
++
++	switch (dsts.b.enumspd) {
++	case DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ:
++		speed = USB_SPEED_HIGH;
++		break;
++	case DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ:
++	case DWC_DSTS_ENUMSPD_FS_PHY_48MHZ:
++		speed = USB_SPEED_FULL;
++		break;
++
++	case DWC_DSTS_ENUMSPD_LS_PHY_6MHZ:
++		speed = USB_SPEED_LOW;
++		break;
++	}
++
++	return speed;
++}
++
++/**
++ * Read the device status register and set the device speed in the
++ * data structure.
++ * Set up EP0 to receive SETUP packets by calling dwc_ep0_activate.
++ */
++int32_t dwc_otg_pcd_handle_enum_done_intr(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
++	gintsts_data_t gintsts;
++	gusbcfg_data_t gusbcfg;
++	dwc_otg_core_global_regs_t *global_regs =
++	    GET_CORE_IF(pcd)->core_global_regs;
++	uint8_t utmi16b, utmi8b;
++	int speed;
++	DWC_DEBUGPL(DBG_PCD, "SPEED ENUM\n");
++
++	if (GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_2_60a) {
++		utmi16b = 6;	//vahrama old value was 6;
++		utmi8b = 9;
++	} else {
++		utmi16b = 4;
++		utmi8b = 8;
++	}
++	dwc_otg_ep0_activate(GET_CORE_IF(pcd), &ep0->dwc_ep);
++	if (GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_3_00a) {
++		ep0_out_start(GET_CORE_IF(pcd), pcd);
++	}
++
++#ifdef DEBUG_EP0
++	print_ep0_state(pcd);
++#endif
++
++	if (pcd->ep0state == EP0_DISCONNECT) {
++		pcd->ep0state = EP0_IDLE;
++	} else if (pcd->ep0state == EP0_STALL) {
++		pcd->ep0state = EP0_IDLE;
++	}
++
++	pcd->ep0state = EP0_IDLE;
++
++	ep0->stopped = 0;
++
++	speed = get_device_speed(GET_CORE_IF(pcd));
++	pcd->fops->connect(pcd, speed);
++
++	/* Set USB turnaround time based on device speed and PHY interface. */
++	gusbcfg.d32 = DWC_READ_REG32(&global_regs->gusbcfg);
++	if (speed == USB_SPEED_HIGH) {
++		if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
++		    DWC_HWCFG2_HS_PHY_TYPE_ULPI) {
++			/* ULPI interface */
++			gusbcfg.b.usbtrdtim = 9;
++		}
++		if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
++		    DWC_HWCFG2_HS_PHY_TYPE_UTMI) {
++			/* UTMI+ interface */
++			if (GET_CORE_IF(pcd)->hwcfg4.b.utmi_phy_data_width == 0) {
++				gusbcfg.b.usbtrdtim = utmi8b;
++			} else if (GET_CORE_IF(pcd)->hwcfg4.
++				   b.utmi_phy_data_width == 1) {
++				gusbcfg.b.usbtrdtim = utmi16b;
++			} else if (GET_CORE_IF(pcd)->
++				   core_params->phy_utmi_width == 8) {
++				gusbcfg.b.usbtrdtim = utmi8b;
++			} else {
++				gusbcfg.b.usbtrdtim = utmi16b;
++			}
++		}
++		if (GET_CORE_IF(pcd)->hwcfg2.b.hs_phy_type ==
++		    DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI) {
++			/* UTMI+  OR  ULPI interface */
++			if (gusbcfg.b.ulpi_utmi_sel == 1) {
++				/* ULPI interface */
++				gusbcfg.b.usbtrdtim = 9;
++			} else {
++				/* UTMI+ interface */
++				if (GET_CORE_IF(pcd)->
++				    core_params->phy_utmi_width == 16) {
++					gusbcfg.b.usbtrdtim = utmi16b;
++				} else {
++					gusbcfg.b.usbtrdtim = utmi8b;
++				}
++			}
++		}
++	} else {
++		/* Full or low speed */
++		gusbcfg.b.usbtrdtim = 9;
++	}
++	DWC_WRITE_REG32(&global_regs->gusbcfg, gusbcfg.d32);
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.enumdone = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++	return 1;
++}
++
++/**
++ * This interrupt indicates that the ISO OUT Packet was dropped due to
++ * Rx FIFO full or Rx Status Queue Full.  If this interrupt occurs
++ * read all the data from the Rx FIFO.
++ */
++int32_t dwc_otg_pcd_handle_isoc_out_packet_dropped_intr(dwc_otg_pcd_t * pcd)
++{
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	gintsts_data_t gintsts;
++
++	DWC_WARN("INTERRUPT Handler not implemented for %s\n",
++		 "ISOC Out Dropped");
++
++	intr_mask.b.isooutdrop = 1;
++	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
++			 intr_mask.d32, 0);
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.isooutdrop = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This interrupt indicates the end of the portion of the micro-frame
++ * for periodic transactions.  If there is a periodic transaction for
++ * the next frame, load the packets into the EP periodic Tx FIFO.
++ */
++int32_t dwc_otg_pcd_handle_end_periodic_frame_intr(dwc_otg_pcd_t * pcd)
++{
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	gintsts_data_t gintsts;
++	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "EOP");
++
++	intr_mask.b.eopframe = 1;
++	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
++			 intr_mask.d32, 0);
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.eopframe = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This interrupt indicates that EP of the packet on the top of the
++ * non-periodic Tx FIFO does not match EP of the IN Token received.
++ *
++ * The "Device IN Token Queue" Registers are read to determine the
++ * order the IN Tokens have been received. The non-periodic Tx FIFO
++ * is flushed, so it can be reloaded in the order seen in the IN Token
++ * Queue.
++ */
++int32_t dwc_otg_pcd_handle_ep_mismatch_intr(dwc_otg_pcd_t * pcd)
++{
++	gintsts_data_t gintsts;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dctl_data_t dctl;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	if (!core_if->en_multiple_tx_fifo && core_if->dma_enable) {
++		core_if->start_predict = 1;
++
++		DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, core_if);
++
++		gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++		if (!gintsts.b.ginnakeff) {
++			/* Disable EP Mismatch interrupt */
++			intr_mask.d32 = 0;
++			intr_mask.b.epmismatch = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, intr_mask.d32, 0);
++			/* Enable the Global IN NAK Effective Interrupt */
++			intr_mask.d32 = 0;
++			intr_mask.b.ginnakeff = 1;
++			DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, intr_mask.d32);
++			/* Set the global non-periodic IN NAK handshake */
++			dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
++			dctl.b.sgnpinnak = 1;
++			DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
++		} else {
++			DWC_PRINTF("gintsts.b.ginnakeff = 1! dctl.b.sgnpinnak not set\n");
++		}
++		/* Disabling of all EP's will be done in dwc_otg_pcd_handle_in_nak_effective()
++		 * handler after Global IN NAK Effective interrupt will be asserted */
++	}
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.epmismatch = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This interrupt is valid only in DMA mode. This interrupt indicates that the
++ * core has stopped fetching data for IN endpoints due to the unavailability of
++ * TxFIFO space or Request Queue space. This interrupt is used by the
++ * application for an endpoint mismatch algorithm.
++ *
++ * @param pcd The PCD
++ */
++int32_t dwc_otg_pcd_handle_ep_fetsusp_intr(dwc_otg_pcd_t * pcd)
++{
++	gintsts_data_t gintsts;
++	gintmsk_data_t gintmsk_data;
++	dctl_data_t dctl;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, core_if);
++
++	/* Clear the global non-periodic IN NAK handshake */
++	dctl.d32 = 0;
++	dctl.b.cgnpinnak = 1;
++	DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
++
++	/* Mask GINTSTS.FETSUSP interrupt */
++	gintmsk_data.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
++	gintmsk_data.b.fetsusp = 0;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, gintmsk_data.d32);
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.fetsusp = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->gintsts, gintsts.d32);
++
++	return 1;
++}
++/**
++ * This funcion stalls EP0.
++ */
++static inline void ep0_do_stall(dwc_otg_pcd_t * pcd, const int err_val)
++{
++	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
++	usb_device_request_t *ctrl = &pcd->setup_pkt->req;
++	DWC_WARN("req %02x.%02x protocol STALL; err %d\n",
++		 ctrl->bmRequestType, ctrl->bRequest, err_val);
++
++	ep0->dwc_ep.is_in = 1;
++	dwc_otg_ep_set_stall(GET_CORE_IF(pcd), &ep0->dwc_ep);
++	pcd->ep0.stopped = 1;
++	pcd->ep0state = EP0_IDLE;
++	ep0_out_start(GET_CORE_IF(pcd), pcd);
++}
++
++/**
++ * This functions delegates the setup command to the gadget driver.
++ */
++static inline void do_gadget_setup(dwc_otg_pcd_t * pcd,
++				   usb_device_request_t * ctrl)
++{
++	int ret = 0;
++	DWC_SPINUNLOCK(pcd->lock);
++	ret = pcd->fops->setup(pcd, (uint8_t *) ctrl);
++	DWC_SPINLOCK(pcd->lock);
++	if (ret < 0) {
++		ep0_do_stall(pcd, ret);
++	}
++
++	/** @todo This is a g_file_storage gadget driver specific
++	 * workaround: a DELAYED_STATUS result from the fsg_setup
++	 * routine will result in the gadget queueing a EP0 IN status
++	 * phase for a two-stage control transfer. Exactly the same as
++	 * a SET_CONFIGURATION/SET_INTERFACE except that this is a class
++	 * specific request.  Need a generic way to know when the gadget
++	 * driver will queue the status phase. Can we assume when we
++	 * call the gadget driver setup() function that it will always
++	 * queue and require the following flag? Need to look into
++	 * this.
++	 */
++
++	if (ret == 256 + 999) {
++		pcd->request_config = 1;
++	}
++}
++
++#ifdef DWC_UTE_CFI
++/**
++ * This functions delegates the CFI setup commands to the gadget driver.
++ * This function will return a negative value to indicate a failure.
++ */
++static inline int cfi_gadget_setup(dwc_otg_pcd_t * pcd,
++				   struct cfi_usb_ctrlrequest *ctrl_req)
++{
++	int ret = 0;
++
++	if (pcd->fops && pcd->fops->cfi_setup) {
++		DWC_SPINUNLOCK(pcd->lock);
++		ret = pcd->fops->cfi_setup(pcd, ctrl_req);
++		DWC_SPINLOCK(pcd->lock);
++		if (ret < 0) {
++			ep0_do_stall(pcd, ret);
++			return ret;
++		}
++	}
++
++	return ret;
++}
++#endif
++
++/**
++ * This function starts the Zero-Length Packet for the IN status phase
++ * of a 2 stage control transfer.
++ */
++static inline void do_setup_in_status_phase(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
++	if (pcd->ep0state == EP0_STALL) {
++		return;
++	}
++
++	pcd->ep0state = EP0_IN_STATUS_PHASE;
++
++	/* Prepare for more SETUP Packets */
++	DWC_DEBUGPL(DBG_PCD, "EP0 IN ZLP\n");
++	if ((GET_CORE_IF(pcd)->snpsid >= OTG_CORE_REV_3_00a)
++	    && (pcd->core_if->dma_desc_enable)
++	    && (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len)) {
++		DWC_DEBUGPL(DBG_PCDV,
++			    "Data terminated wait next packet in out_desc_addr\n");
++		pcd->backup_buf = phys_to_virt(ep0->dwc_ep.dma_addr);
++		pcd->data_terminated = 1;
++	}
++	ep0->dwc_ep.xfer_len = 0;
++	ep0->dwc_ep.xfer_count = 0;
++	ep0->dwc_ep.is_in = 1;
++	ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
++	dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
++
++	/* Prepare for more SETUP Packets */
++	//ep0_out_start(GET_CORE_IF(pcd), pcd);
++}
++
++/**
++ * This function starts the Zero-Length Packet for the OUT status phase
++ * of a 2 stage control transfer.
++ */
++static inline void do_setup_out_status_phase(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
++	if (pcd->ep0state == EP0_STALL) {
++		DWC_DEBUGPL(DBG_PCD, "EP0 STALLED\n");
++		return;
++	}
++	pcd->ep0state = EP0_OUT_STATUS_PHASE;
++
++	DWC_DEBUGPL(DBG_PCD, "EP0 OUT ZLP\n");
++	ep0->dwc_ep.xfer_len = 0;
++	ep0->dwc_ep.xfer_count = 0;
++	ep0->dwc_ep.is_in = 0;
++	ep0->dwc_ep.dma_addr = pcd->setup_pkt_dma_handle;
++	dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
++
++	/* Prepare for more SETUP Packets */
++	if (GET_CORE_IF(pcd)->dma_enable == 0) {
++		ep0_out_start(GET_CORE_IF(pcd), pcd);
++	}
++}
++
++/**
++ * Clear the EP halt (STALL) and if pending requests start the
++ * transfer.
++ */
++static inline void pcd_clear_halt(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep)
++{
++	if (ep->dwc_ep.stall_clear_flag == 0)
++		dwc_otg_ep_clear_stall(GET_CORE_IF(pcd), &ep->dwc_ep);
++
++	/* Reactive the EP */
++	dwc_otg_ep_activate(GET_CORE_IF(pcd), &ep->dwc_ep);
++	if (ep->stopped) {
++		ep->stopped = 0;
++		/* If there is a request in the EP queue start it */
++
++		/** @todo FIXME: this causes an EP mismatch in DMA mode.
++		 * epmismatch not yet implemented. */
++
++		/*
++		 * Above fixme is solved by implmenting a tasklet to call the
++		 * start_next_request(), outside of interrupt context at some
++		 * time after the current time, after a clear-halt setup packet.
++		 * Still need to implement ep mismatch in the future if a gadget
++		 * ever uses more than one endpoint at once
++		 */
++		ep->queue_sof = 1;
++		DWC_TASK_SCHEDULE(pcd->start_xfer_tasklet);
++	}
++	/* Start Control Status Phase */
++	do_setup_in_status_phase(pcd);
++}
++
++/**
++ * This function is called when the SET_FEATURE TEST_MODE Setup packet
++ * is sent from the host.  The Device Control register is written with
++ * the Test Mode bits set to the specified Test Mode.  This is done as
++ * a tasklet so that the "Status" phase of the control transfer
++ * completes before transmitting the TEST packets.
++ *
++ * @todo This has not been tested since the tasklet struct was put
++ * into the PCD struct!
++ *
++ */
++void do_test_mode(void *data)
++{
++	dctl_data_t dctl;
++	dwc_otg_pcd_t *pcd = (dwc_otg_pcd_t *) data;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	int test_mode = pcd->test_mode;
++
++//        DWC_WARN("%s() has not been tested since being rewritten!\n", __func__);
++
++	dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
++	switch (test_mode) {
++	case 1:		// TEST_J
++		dctl.b.tstctl = 1;
++		break;
++
++	case 2:		// TEST_K
++		dctl.b.tstctl = 2;
++		break;
++
++	case 3:		// TEST_SE0_NAK
++		dctl.b.tstctl = 3;
++		break;
++
++	case 4:		// TEST_PACKET
++		dctl.b.tstctl = 4;
++		break;
++
++	case 5:		// TEST_FORCE_ENABLE
++		dctl.b.tstctl = 5;
++		break;
++	}
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
++}
++
++/**
++ * This function process the GET_STATUS Setup Commands.
++ */
++static inline void do_get_status(dwc_otg_pcd_t * pcd)
++{
++	usb_device_request_t ctrl = pcd->setup_pkt->req;
++	dwc_otg_pcd_ep_t *ep;
++	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
++	uint16_t *status = pcd->status_buf;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++
++#ifdef DEBUG_EP0
++	DWC_DEBUGPL(DBG_PCD,
++		    "GET_STATUS %02x.%02x v%04x i%04x l%04x\n",
++		    ctrl.bmRequestType, ctrl.bRequest,
++		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
++		    UGETW(ctrl.wLength));
++#endif
++
++	switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
++	case UT_DEVICE:
++		if(UGETW(ctrl.wIndex) == 0xF000) { /* OTG Status selector */
++			DWC_PRINTF("wIndex - %d\n", UGETW(ctrl.wIndex));
++			DWC_PRINTF("OTG VERSION - %d\n", core_if->otg_ver);
++			DWC_PRINTF("OTG CAP - %d, %d\n",
++				   core_if->core_params->otg_cap,
++						DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE);
++			if (core_if->otg_ver == 1
++			    && core_if->core_params->otg_cap ==
++			    DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
++				uint8_t *otgsts = (uint8_t*)pcd->status_buf;
++				*otgsts = (core_if->otg_sts & 0x1);
++				pcd->ep0_pending = 1;
++				ep0->dwc_ep.start_xfer_buff =
++				    (uint8_t *) otgsts;
++				ep0->dwc_ep.xfer_buff = (uint8_t *) otgsts;
++				ep0->dwc_ep.dma_addr =
++				    pcd->status_buf_dma_handle;
++				ep0->dwc_ep.xfer_len = 1;
++				ep0->dwc_ep.xfer_count = 0;
++				ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len;
++				dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd),
++							   &ep0->dwc_ep);
++				return;
++			} else {
++				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++				return;
++			}
++			break;
++		} else {
++			*status = 0x1;	/* Self powered */
++			*status |= pcd->remote_wakeup_enable << 1;
++			break;
++		}
++	case UT_INTERFACE:
++		*status = 0;
++		break;
++
++	case UT_ENDPOINT:
++		ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
++		if (ep == 0 || UGETW(ctrl.wLength) > 2) {
++			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++			return;
++		}
++		/** @todo check for EP stall */
++		*status = ep->stopped;
++		break;
++	}
++	pcd->ep0_pending = 1;
++	ep0->dwc_ep.start_xfer_buff = (uint8_t *) status;
++	ep0->dwc_ep.xfer_buff = (uint8_t *) status;
++	ep0->dwc_ep.dma_addr = pcd->status_buf_dma_handle;
++	ep0->dwc_ep.xfer_len = 2;
++	ep0->dwc_ep.xfer_count = 0;
++	ep0->dwc_ep.total_len = ep0->dwc_ep.xfer_len;
++	dwc_otg_ep0_start_transfer(GET_CORE_IF(pcd), &ep0->dwc_ep);
++}
++
++/**
++ * This function process the SET_FEATURE Setup Commands.
++ */
++static inline void do_set_feature(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++	usb_device_request_t ctrl = pcd->setup_pkt->req;
++	dwc_otg_pcd_ep_t *ep = 0;
++	int32_t otg_cap_param = core_if->core_params->otg_cap;
++	gotgctl_data_t gotgctl = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_PCD, "SET_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
++		    ctrl.bmRequestType, ctrl.bRequest,
++		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
++		    UGETW(ctrl.wLength));
++	DWC_DEBUGPL(DBG_PCD, "otg_cap=%d\n", otg_cap_param);
++
++	switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
++	case UT_DEVICE:
++		switch (UGETW(ctrl.wValue)) {
++		case UF_DEVICE_REMOTE_WAKEUP:
++			pcd->remote_wakeup_enable = 1;
++			break;
++
++		case UF_TEST_MODE:
++			/* Setup the Test Mode tasklet to do the Test
++			 * Packet generation after the SETUP Status
++			 * phase has completed. */
++
++			/** @todo This has not been tested since the
++			 * tasklet struct was put into the PCD
++			 * struct! */
++			pcd->test_mode = UGETW(ctrl.wIndex) >> 8;
++			DWC_TASK_SCHEDULE(pcd->test_mode_tasklet);
++			break;
++
++		case UF_DEVICE_B_HNP_ENABLE:
++			DWC_DEBUGPL(DBG_PCDV,
++				    "SET_FEATURE: USB_DEVICE_B_HNP_ENABLE\n");
++
++			/* dev may initiate HNP */
++			if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
++				pcd->b_hnp_enable = 1;
++				dwc_otg_pcd_update_otg(pcd, 0);
++				DWC_DEBUGPL(DBG_PCD, "Request B HNP\n");
++				/**@todo Is the gotgctl.devhnpen cleared
++				 * by a USB Reset? */
++				gotgctl.b.devhnpen = 1;
++				gotgctl.b.hnpreq = 1;
++				DWC_WRITE_REG32(&global_regs->gotgctl,
++						gotgctl.d32);
++			} else {
++				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++				return;
++			}
++			break;
++
++		case UF_DEVICE_A_HNP_SUPPORT:
++			/* RH port supports HNP */
++			DWC_DEBUGPL(DBG_PCDV,
++				    "SET_FEATURE: USB_DEVICE_A_HNP_SUPPORT\n");
++			if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
++				pcd->a_hnp_support = 1;
++				dwc_otg_pcd_update_otg(pcd, 0);
++			} else {
++				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++				return;
++			}
++			break;
++
++		case UF_DEVICE_A_ALT_HNP_SUPPORT:
++			/* other RH port does */
++			DWC_DEBUGPL(DBG_PCDV,
++				    "SET_FEATURE: USB_DEVICE_A_ALT_HNP_SUPPORT\n");
++			if (otg_cap_param == DWC_OTG_CAP_PARAM_HNP_SRP_CAPABLE) {
++				pcd->a_alt_hnp_support = 1;
++				dwc_otg_pcd_update_otg(pcd, 0);
++			} else {
++				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++				return;
++			}
++			break;
++
++		default:
++			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++			return;
++
++		}
++		do_setup_in_status_phase(pcd);
++		break;
++
++	case UT_INTERFACE:
++		do_gadget_setup(pcd, &ctrl);
++		break;
++
++	case UT_ENDPOINT:
++		if (UGETW(ctrl.wValue) == UF_ENDPOINT_HALT) {
++			ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
++			if (ep == 0) {
++				ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++				return;
++			}
++			ep->stopped = 1;
++			dwc_otg_ep_set_stall(core_if, &ep->dwc_ep);
++		}
++		do_setup_in_status_phase(pcd);
++		break;
++	}
++}
++
++/**
++ * This function process the CLEAR_FEATURE Setup Commands.
++ */
++static inline void do_clear_feature(dwc_otg_pcd_t * pcd)
++{
++	usb_device_request_t ctrl = pcd->setup_pkt->req;
++	dwc_otg_pcd_ep_t *ep = 0;
++
++	DWC_DEBUGPL(DBG_PCD,
++		    "CLEAR_FEATURE:%02x.%02x v%04x i%04x l%04x\n",
++		    ctrl.bmRequestType, ctrl.bRequest,
++		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
++		    UGETW(ctrl.wLength));
++
++	switch (UT_GET_RECIPIENT(ctrl.bmRequestType)) {
++	case UT_DEVICE:
++		switch (UGETW(ctrl.wValue)) {
++		case UF_DEVICE_REMOTE_WAKEUP:
++			pcd->remote_wakeup_enable = 0;
++			break;
++
++		case UF_TEST_MODE:
++			/** @todo Add CLEAR_FEATURE for TEST modes. */
++			break;
++
++		default:
++			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++			return;
++		}
++		do_setup_in_status_phase(pcd);
++		break;
++
++	case UT_ENDPOINT:
++		ep = get_ep_by_addr(pcd, UGETW(ctrl.wIndex));
++		if (ep == 0) {
++			ep0_do_stall(pcd, -DWC_E_NOT_SUPPORTED);
++			return;
++		}
++
++		pcd_clear_halt(pcd, ep);
++
++		break;
++	}
++}
++
++/**
++ * This function process the SET_ADDRESS Setup Commands.
++ */
++static inline void do_set_address(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
++	usb_device_request_t ctrl = pcd->setup_pkt->req;
++
++	if (ctrl.bmRequestType == UT_DEVICE) {
++		dcfg_data_t dcfg = {.d32 = 0 };
++
++#ifdef DEBUG_EP0
++//                      DWC_DEBUGPL(DBG_PCDV, "SET_ADDRESS:%d\n", ctrl.wValue);
++#endif
++		dcfg.b.devaddr = UGETW(ctrl.wValue);
++		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dcfg, 0, dcfg.d32);
++		do_setup_in_status_phase(pcd);
++	}
++}
++
++/**
++ *	This function processes SETUP commands. In Linux, the USB Command
++ *	processing is done in two places - the first being the PCD and the
++ *	second in the Gadget Driver (for example, the File-Backed Storage
++ *	Gadget Driver).
++ *
++ * <table>
++ * <tr><td>Command	</td><td>Driver </td><td>Description</td></tr>
++ *
++ * <tr><td>GET_STATUS </td><td>PCD </td><td>Command is processed as
++ * defined in chapter 9 of the USB 2.0 Specification chapter 9
++ * </td></tr>
++ *
++ * <tr><td>CLEAR_FEATURE </td><td>PCD </td><td>The Device and Endpoint
++ * requests are the ENDPOINT_HALT feature is procesed, all others the
++ * interface requests are ignored.</td></tr>
++ *
++ * <tr><td>SET_FEATURE </td><td>PCD </td><td>The Device and Endpoint
++ * requests are processed by the PCD.  Interface requests are passed
++ * to the Gadget Driver.</td></tr>
++ *
++ * <tr><td>SET_ADDRESS </td><td>PCD </td><td>Program the DCFG reg,
++ * with device address received </td></tr>
++ *
++ * <tr><td>GET_DESCRIPTOR </td><td>Gadget Driver </td><td>Return the
++ * requested descriptor</td></tr>
++ *
++ * <tr><td>SET_DESCRIPTOR </td><td>Gadget Driver </td><td>Optional -
++ * not implemented by any of the existing Gadget Drivers.</td></tr>
++ *
++ * <tr><td>SET_CONFIGURATION </td><td>Gadget Driver </td><td>Disable
++ * all EPs and enable EPs for new configuration.</td></tr>
++ *
++ * <tr><td>GET_CONFIGURATION </td><td>Gadget Driver </td><td>Return
++ * the current configuration</td></tr>
++ *
++ * <tr><td>SET_INTERFACE </td><td>Gadget Driver </td><td>Disable all
++ * EPs and enable EPs for new configuration.</td></tr>
++ *
++ * <tr><td>GET_INTERFACE </td><td>Gadget Driver </td><td>Return the
++ * current interface.</td></tr>
++ *
++ * <tr><td>SYNC_FRAME </td><td>PCD </td><td>Display debug
++ * message.</td></tr>
++ * </table>
++ *
++ * When the SETUP Phase Done interrupt occurs, the PCD SETUP commands are
++ * processed by pcd_setup. Calling the Function Driver's setup function from
++ * pcd_setup processes the gadget SETUP commands.
++ */
++static inline void pcd_setup(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	usb_device_request_t ctrl = pcd->setup_pkt->req;
++	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
++
++	deptsiz0_data_t doeptsize0 = {.d32 = 0 };
++
++#ifdef DWC_UTE_CFI
++	int retval = 0;
++	struct cfi_usb_ctrlrequest cfi_req;
++#endif
++
++	doeptsize0.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[0]->doeptsiz);
++
++	/** In BDMA more then 1 setup packet is not supported till 3.00a */
++	if (core_if->dma_enable && core_if->dma_desc_enable == 0
++	    && (doeptsize0.b.supcnt < 2)
++	    && (core_if->snpsid < OTG_CORE_REV_2_94a)) {
++		DWC_ERROR
++		    ("\n\n-----------	 CANNOT handle > 1 setup packet in DMA mode\n\n");
++	}
++	if ((core_if->snpsid >= OTG_CORE_REV_3_00a)
++	    && (core_if->dma_enable == 1) && (core_if->dma_desc_enable == 0)) {
++		ctrl =
++		    (pcd->setup_pkt +
++		     (3 - doeptsize0.b.supcnt - 1 +
++		      ep0->dwc_ep.stp_rollover))->req;
++	}
++#ifdef DEBUG_EP0
++	DWC_DEBUGPL(DBG_PCD, "SETUP %02x.%02x v%04x i%04x l%04x\n",
++		    ctrl.bmRequestType, ctrl.bRequest,
++		    UGETW(ctrl.wValue), UGETW(ctrl.wIndex),
++		    UGETW(ctrl.wLength));
++#endif
++
++	/* Clean up the request queue */
++	dwc_otg_request_nuke(ep0);
++	ep0->stopped = 0;
++
++	if (ctrl.bmRequestType & UE_DIR_IN) {
++		ep0->dwc_ep.is_in = 1;
++		pcd->ep0state = EP0_IN_DATA_PHASE;
++	} else {
++		ep0->dwc_ep.is_in = 0;
++		pcd->ep0state = EP0_OUT_DATA_PHASE;
++	}
++
++	if (UGETW(ctrl.wLength) == 0) {
++		ep0->dwc_ep.is_in = 1;
++		pcd->ep0state = EP0_IN_STATUS_PHASE;
++	}
++
++	if (UT_GET_TYPE(ctrl.bmRequestType) != UT_STANDARD) {
++
++#ifdef DWC_UTE_CFI
++		DWC_MEMCPY(&cfi_req, &ctrl, sizeof(usb_device_request_t));
++
++		//printk(KERN_ALERT "CFI: req_type=0x%02x; req=0x%02x\n",
++				ctrl.bRequestType, ctrl.bRequest);
++		if (UT_GET_TYPE(cfi_req.bRequestType) == UT_VENDOR) {
++			if (cfi_req.bRequest > 0xB0 && cfi_req.bRequest < 0xBF) {
++				retval = cfi_setup(pcd, &cfi_req);
++				if (retval < 0) {
++					ep0_do_stall(pcd, retval);
++					pcd->ep0_pending = 0;
++					return;
++				}
++
++				/* if need gadget setup then call it and check the retval */
++				if (pcd->cfi->need_gadget_att) {
++					retval =
++					    cfi_gadget_setup(pcd,
++							     &pcd->
++							     cfi->ctrl_req);
++					if (retval < 0) {
++						pcd->ep0_pending = 0;
++						return;
++					}
++				}
++
++				if (pcd->cfi->need_status_in_complete) {
++					do_setup_in_status_phase(pcd);
++				}
++				return;
++			}
++		}
++#endif
++
++		/* handle non-standard (class/vendor) requests in the gadget driver */
++		do_gadget_setup(pcd, &ctrl);
++		return;
++	}
++
++	/** @todo NGS: Handle bad setup packet? */
++
++///////////////////////////////////////////
++//// --- Standard Request handling --- ////
++
++	switch (ctrl.bRequest) {
++	case UR_GET_STATUS:
++		do_get_status(pcd);
++		break;
++
++	case UR_CLEAR_FEATURE:
++		do_clear_feature(pcd);
++		break;
++
++	case UR_SET_FEATURE:
++		do_set_feature(pcd);
++		break;
++
++	case UR_SET_ADDRESS:
++		do_set_address(pcd);
++		break;
++
++	case UR_SET_INTERFACE:
++	case UR_SET_CONFIG:
++//              _pcd->request_config = 1;       /* Configuration changed */
++		do_gadget_setup(pcd, &ctrl);
++		break;
++
++	case UR_SYNCH_FRAME:
++		do_gadget_setup(pcd, &ctrl);
++		break;
++
++	default:
++		/* Call the Gadget Driver's setup functions */
++		do_gadget_setup(pcd, &ctrl);
++		break;
++	}
++}
++
++/**
++ * This function completes the ep0 control transfer.
++ */
++static int32_t ep0_complete_request(dwc_otg_pcd_ep_t * ep)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	dwc_otg_dev_in_ep_regs_t *in_ep_regs =
++	    dev_if->in_ep_regs[ep->dwc_ep.num];
++#ifdef DEBUG_EP0
++	dwc_otg_dev_out_ep_regs_t *out_ep_regs =
++	    dev_if->out_ep_regs[ep->dwc_ep.num];
++#endif
++	deptsiz0_data_t deptsiz;
++	dev_dma_desc_sts_t desc_sts;
++	dwc_otg_pcd_request_t *req;
++	int is_last = 0;
++	dwc_otg_pcd_t *pcd = ep->pcd;
++
++#ifdef DWC_UTE_CFI
++	struct cfi_usb_ctrlrequest *ctrlreq;
++	int retval = -DWC_E_NOT_SUPPORTED;
++#endif
++
++        desc_sts.b.bytes = 0;
++
++	if (pcd->ep0_pending && DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		if (ep->dwc_ep.is_in) {
++#ifdef DEBUG_EP0
++			DWC_DEBUGPL(DBG_PCDV, "Do setup OUT status phase\n");
++#endif
++			do_setup_out_status_phase(pcd);
++		} else {
++#ifdef DEBUG_EP0
++			DWC_DEBUGPL(DBG_PCDV, "Do setup IN status phase\n");
++#endif
++
++#ifdef DWC_UTE_CFI
++			ctrlreq = &pcd->cfi->ctrl_req;
++
++			if (UT_GET_TYPE(ctrlreq->bRequestType) == UT_VENDOR) {
++				if (ctrlreq->bRequest > 0xB0
++				    && ctrlreq->bRequest < 0xBF) {
++
++					/* Return if the PCD failed to handle the request */
++					if ((retval =
++					     pcd->cfi->ops.
++					     ctrl_write_complete(pcd->cfi,
++								 pcd)) < 0) {
++						CFI_INFO
++						    ("ERROR setting a new value in the PCD(%d)\n",
++						     retval);
++						ep0_do_stall(pcd, retval);
++						pcd->ep0_pending = 0;
++						return 0;
++					}
++
++					/* If the gadget needs to be notified on the request */
++					if (pcd->cfi->need_gadget_att == 1) {
++						//retval = do_gadget_setup(pcd, &pcd->cfi->ctrl_req);
++						retval =
++						    cfi_gadget_setup(pcd,
++								     &pcd->cfi->
++								     ctrl_req);
++
++						/* Return from the function if the gadget failed to process
++						 * the request properly - this should never happen !!!
++						 */
++						if (retval < 0) {
++							CFI_INFO
++							    ("ERROR setting a new value in the gadget(%d)\n",
++							     retval);
++							pcd->ep0_pending = 0;
++							return 0;
++						}
++					}
++
++					CFI_INFO("%s: RETVAL=%d\n", __func__,
++						 retval);
++					/* If we hit here then the PCD and the gadget has properly
++					 * handled the request - so send the ZLP IN to the host.
++					 */
++					/* @todo: MAS - decide whether we need to start the setup
++					 * stage based on the need_setup value of the cfi object
++					 */
++					do_setup_in_status_phase(pcd);
++					pcd->ep0_pending = 0;
++					return 1;
++				}
++			}
++#endif
++
++			do_setup_in_status_phase(pcd);
++		}
++		pcd->ep0_pending = 0;
++		return 1;
++	}
++
++	if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		return 0;
++	}
++	req = DWC_CIRCLEQ_FIRST(&ep->queue);
++
++	if (pcd->ep0state == EP0_OUT_STATUS_PHASE
++	    || pcd->ep0state == EP0_IN_STATUS_PHASE) {
++		is_last = 1;
++	} else if (ep->dwc_ep.is_in) {
++		deptsiz.d32 = DWC_READ_REG32(&in_ep_regs->dieptsiz);
++		if (core_if->dma_desc_enable != 0)
++			desc_sts = dev_if->in_desc_addr->status;
++#ifdef DEBUG_EP0
++		DWC_DEBUGPL(DBG_PCDV, "%d len=%d  xfersize=%d pktcnt=%d\n",
++			    ep->dwc_ep.num, ep->dwc_ep.xfer_len,
++			    deptsiz.b.xfersize, deptsiz.b.pktcnt);
++#endif
++
++		if (((core_if->dma_desc_enable == 0)
++		     && (deptsiz.b.xfersize == 0))
++		    || ((core_if->dma_desc_enable != 0)
++			&& (desc_sts.b.bytes == 0))) {
++			req->actual = ep->dwc_ep.xfer_count;
++			/* Is a Zero Len Packet needed? */
++			if (req->sent_zlp) {
++#ifdef DEBUG_EP0
++				DWC_DEBUGPL(DBG_PCD, "Setup Rx ZLP\n");
++#endif
++				req->sent_zlp = 0;
++			}
++			do_setup_out_status_phase(pcd);
++		}
++	} else {
++		/* ep0-OUT */
++#ifdef DEBUG_EP0
++		deptsiz.d32 = DWC_READ_REG32(&out_ep_regs->doeptsiz);
++		DWC_DEBUGPL(DBG_PCDV, "%d len=%d xsize=%d pktcnt=%d\n",
++			    ep->dwc_ep.num, ep->dwc_ep.xfer_len,
++			    deptsiz.b.xfersize, deptsiz.b.pktcnt);
++#endif
++		req->actual = ep->dwc_ep.xfer_count;
++
++		/* Is a Zero Len Packet needed? */
++		if (req->sent_zlp) {
++#ifdef DEBUG_EP0
++			DWC_DEBUGPL(DBG_PCDV, "Setup Tx ZLP\n");
++#endif
++			req->sent_zlp = 0;
++		}
++		/* For older cores do setup in status phase in Slave/BDMA modes,
++		 * starting from 3.00 do that only in slave, and for DMA modes
++		 * just re-enable ep 0 OUT here*/
++		if (core_if->dma_enable == 0
++		    || (core_if->dma_desc_enable == 0
++			&& core_if->snpsid <= OTG_CORE_REV_2_94a)) {
++			do_setup_in_status_phase(pcd);
++		} else if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++			DWC_DEBUGPL(DBG_PCDV,
++				    "Enable out ep before in status phase\n");
++			ep0_out_start(core_if, pcd);
++		}
++	}
++
++	/* Complete the request */
++	if (is_last) {
++		dwc_otg_request_done(ep, req, 0);
++		ep->dwc_ep.start_xfer_buff = 0;
++		ep->dwc_ep.xfer_buff = 0;
++		ep->dwc_ep.xfer_len = 0;
++		return 1;
++	}
++	return 0;
++}
++
++#ifdef DWC_UTE_CFI
++/**
++ * This function calculates traverses all the CFI DMA descriptors and
++ * and accumulates the bytes that are left to be transfered.
++ *
++ * @return The total bytes left to transfered, or a negative value as failure
++ */
++static inline int cfi_calc_desc_residue(dwc_otg_pcd_ep_t * ep)
++{
++	int32_t ret = 0;
++	int i;
++	struct dwc_otg_dma_desc *ddesc = NULL;
++	struct cfi_ep *cfiep;
++
++	/* See if the pcd_ep has its respective cfi_ep mapped */
++	cfiep = get_cfi_ep_by_pcd_ep(ep->pcd->cfi, ep);
++	if (!cfiep) {
++		CFI_INFO("%s: Failed to find ep\n", __func__);
++		return -1;
++	}
++
++	ddesc = ep->dwc_ep.descs;
++
++	for (i = 0; (i < cfiep->desc_count) && (i < MAX_DMA_DESCS_PER_EP); i++) {
++
++#if defined(PRINT_CFI_DMA_DESCS)
++		print_desc(ddesc, ep->ep.name, i);
++#endif
++		ret += ddesc->status.b.bytes;
++		ddesc++;
++	}
++
++	if (ret)
++		CFI_INFO("!!!!!!!!!! WARNING (%s) - residue=%d\n", __func__,
++			 ret);
++
++	return ret;
++}
++#endif
++
++/**
++ * This function completes the request for the EP. If there are
++ * additional requests for the EP in the queue they will be started.
++ */
++static void complete_ep(dwc_otg_pcd_ep_t * ep)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
++	struct device *dev = dwc_otg_pcd_to_dev(ep->pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	dwc_otg_dev_in_ep_regs_t *in_ep_regs =
++	    dev_if->in_ep_regs[ep->dwc_ep.num];
++	deptsiz_data_t deptsiz;
++	dev_dma_desc_sts_t desc_sts;
++	dwc_otg_pcd_request_t *req = 0;
++	dwc_otg_dev_dma_desc_t *dma_desc;
++	uint32_t byte_count = 0;
++	int is_last = 0;
++	int i;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s() %d-%s\n", __func__, ep->dwc_ep.num,
++		    (ep->dwc_ep.is_in ? "IN" : "OUT"));
++
++	/* Get any pending requests */
++	if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++		req = DWC_CIRCLEQ_FIRST(&ep->queue);
++		if (!req) {
++			DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
++			return;
++		}
++	} else {
++		DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
++		return;
++	}
++
++	DWC_DEBUGPL(DBG_PCD, "Requests %d\n", ep->pcd->request_pending);
++
++	if (ep->dwc_ep.is_in) {
++		deptsiz.d32 = DWC_READ_REG32(&in_ep_regs->dieptsiz);
++
++		if (core_if->dma_enable) {
++			if (core_if->dma_desc_enable == 0) {
++				if (deptsiz.b.xfersize == 0
++				    && deptsiz.b.pktcnt == 0) {
++					byte_count =
++					    ep->dwc_ep.xfer_len -
++					    ep->dwc_ep.xfer_count;
++
++					ep->dwc_ep.xfer_buff += byte_count;
++					ep->dwc_ep.dma_addr += byte_count;
++					ep->dwc_ep.xfer_count += byte_count;
++
++					DWC_DEBUGPL(DBG_PCDV,
++						    "%d-%s len=%d  xfersize=%d pktcnt=%d\n",
++						    ep->dwc_ep.num,
++						    (ep->dwc_ep.
++						     is_in ? "IN" : "OUT"),
++						    ep->dwc_ep.xfer_len,
++						    deptsiz.b.xfersize,
++						    deptsiz.b.pktcnt);
++
++					if (ep->dwc_ep.xfer_len <
++					    ep->dwc_ep.total_len) {
++						dwc_otg_ep_start_transfer
++						    (core_if, &ep->dwc_ep);
++					} else if (ep->dwc_ep.sent_zlp) {
++						/*
++						 * This fragment of code should initiate 0
++						 * length transfer in case if it is queued
++						 * a transfer with size divisible to EPs max
++						 * packet size and with usb_request zero field
++						 * is set, which means that after data is transfered,
++						 * it is also should be transfered
++						 * a 0 length packet at the end. For Slave and
++						 * Buffer DMA modes in this case SW has
++						 * to initiate 2 transfers one with transfer size,
++						 * and the second with 0 size. For Descriptor
++						 * DMA mode SW is able to initiate a transfer,
++						 * which will handle all the packets including
++						 * the last  0 length.
++						 */
++						ep->dwc_ep.sent_zlp = 0;
++						dwc_otg_ep_start_zl_transfer
++						    (core_if, &ep->dwc_ep);
++					} else {
++						is_last = 1;
++					}
++				} else {
++					if (ep->dwc_ep.type ==
++					    DWC_OTG_EP_TYPE_ISOC) {
++						req->actual = 0;
++						dwc_otg_request_done(ep, req, 0);
++
++						ep->dwc_ep.start_xfer_buff = 0;
++						ep->dwc_ep.xfer_buff = 0;
++						ep->dwc_ep.xfer_len = 0;
++
++						/* If there is a request in the queue start it. */
++						start_next_request(ep);
++					} else
++						DWC_WARN
++						("Incomplete transfer (%d - %s [siz=%d pkt=%d])\n",
++						ep->dwc_ep.num,
++						(ep->dwc_ep.is_in ? "IN" : "OUT"),
++						deptsiz.b.xfersize,
++						deptsiz.b.pktcnt);
++				}
++			} else {
++				dma_desc = ep->dwc_ep.desc_addr;
++				byte_count = 0;
++				ep->dwc_ep.sent_zlp = 0;
++
++#ifdef DWC_UTE_CFI
++				CFI_INFO("%s: BUFFER_MODE=%d\n", __func__,
++					 ep->dwc_ep.buff_mode);
++				if (ep->dwc_ep.buff_mode != BM_STANDARD) {
++					int residue;
++
++					residue = cfi_calc_desc_residue(ep);
++					if (residue < 0)
++						return;
++
++					byte_count = residue;
++				} else {
++#endif
++					for (i = 0; i < ep->dwc_ep.desc_cnt;
++					     ++i) {
++					desc_sts = dma_desc->status;
++					byte_count += desc_sts.b.bytes;
++					dma_desc++;
++				}
++#ifdef DWC_UTE_CFI
++				}
++#endif
++				if (byte_count == 0) {
++					ep->dwc_ep.xfer_count =
++					    ep->dwc_ep.total_len;
++					is_last = 1;
++				} else {
++					DWC_WARN("Incomplete transfer\n");
++				}
++			}
++		} else {
++			if (deptsiz.b.xfersize == 0 && deptsiz.b.pktcnt == 0) {
++				DWC_DEBUGPL(DBG_PCDV,
++					    "%d-%s len=%d  xfersize=%d pktcnt=%d\n",
++					    ep->dwc_ep.num,
++					    ep->dwc_ep.is_in ? "IN" : "OUT",
++					    ep->dwc_ep.xfer_len,
++					    deptsiz.b.xfersize,
++					    deptsiz.b.pktcnt);
++
++				/*      Check if the whole transfer was completed,
++				 *      if no, setup transfer for next portion of data
++				 */
++				if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
++					dwc_otg_ep_start_transfer(core_if,
++								  &ep->dwc_ep);
++				} else if (ep->dwc_ep.sent_zlp) {
++					/*
++					 * This fragment of code should initiate 0
++					 * length trasfer in case if it is queued
++					 * a trasfer with size divisible to EPs max
++					 * packet size and with usb_request zero field
++					 * is set, which means that after data is transfered,
++					 * it is also should be transfered
++					 * a 0 length packet at the end. For Slave and
++					 * Buffer DMA modes in this case SW has
++					 * to initiate 2 transfers one with transfer size,
++					 * and the second with 0 size. For Desriptor
++					 * DMA mode SW is able to initiate a transfer,
++					 * which will handle all the packets including
++					 * the last  0 legth.
++					 */
++					ep->dwc_ep.sent_zlp = 0;
++					dwc_otg_ep_start_zl_transfer(core_if,
++								     &ep->dwc_ep);
++				} else {
++					is_last = 1;
++				}
++			} else {
++				DWC_WARN
++				    ("Incomplete transfer (%d-%s [siz=%d pkt=%d])\n",
++				     ep->dwc_ep.num,
++				     (ep->dwc_ep.is_in ? "IN" : "OUT"),
++				     deptsiz.b.xfersize, deptsiz.b.pktcnt);
++			}
++		}
++	} else {
++		dwc_otg_dev_out_ep_regs_t *out_ep_regs =
++		    dev_if->out_ep_regs[ep->dwc_ep.num];
++		desc_sts.d32 = 0;
++		if (core_if->dma_enable) {
++			if (core_if->dma_desc_enable) {
++				dma_desc = ep->dwc_ep.desc_addr;
++				byte_count = 0;
++				ep->dwc_ep.sent_zlp = 0;
++
++#ifdef DWC_UTE_CFI
++				CFI_INFO("%s: BUFFER_MODE=%d\n", __func__,
++					 ep->dwc_ep.buff_mode);
++				if (ep->dwc_ep.buff_mode != BM_STANDARD) {
++					int residue;
++					residue = cfi_calc_desc_residue(ep);
++					if (residue < 0)
++						return;
++					byte_count = residue;
++				} else {
++#endif
++
++					for (i = 0; i < ep->dwc_ep.desc_cnt;
++					     ++i) {
++						desc_sts = dma_desc->status;
++						byte_count += desc_sts.b.bytes;
++						dma_desc++;
++					}
++
++#ifdef DWC_UTE_CFI
++				}
++#endif
++				/* Checking for interrupt Out transfers with not
++				 * dword aligned mps sizes
++				 */
++				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_INTR &&
++							(ep->dwc_ep.maxpacket%4)) {
++					ep->dwc_ep.xfer_count =
++					    ep->dwc_ep.total_len - byte_count;
++					if ((ep->dwc_ep.xfer_len %
++					     ep->dwc_ep.maxpacket)
++					    && (ep->dwc_ep.xfer_len /
++						ep->dwc_ep.maxpacket <
++						MAX_DMA_DESC_CNT))
++						ep->dwc_ep.xfer_len -=
++						    (ep->dwc_ep.desc_cnt -
++						     1) * ep->dwc_ep.maxpacket +
++						    ep->dwc_ep.xfer_len %
++						    ep->dwc_ep.maxpacket;
++					else
++						ep->dwc_ep.xfer_len -=
++						    ep->dwc_ep.desc_cnt *
++						    ep->dwc_ep.maxpacket;
++					if (ep->dwc_ep.xfer_len > 0) {
++						dwc_otg_ep_start_transfer
++						    (core_if, &ep->dwc_ep);
++					} else {
++						is_last = 1;
++					}
++				} else {
++					ep->dwc_ep.xfer_count =
++					    ep->dwc_ep.total_len - byte_count +
++					    ((4 -
++					      (ep->dwc_ep.
++					       total_len & 0x3)) & 0x3);
++					is_last = 1;
++				}
++			} else {
++				deptsiz.d32 = 0;
++				deptsiz.d32 =
++				    DWC_READ_REG32(&out_ep_regs->doeptsiz);
++
++				byte_count = (ep->dwc_ep.xfer_len -
++					      ep->dwc_ep.xfer_count -
++					      deptsiz.b.xfersize);
++				ep->dwc_ep.xfer_buff += byte_count;
++				ep->dwc_ep.dma_addr += byte_count;
++				ep->dwc_ep.xfer_count += byte_count;
++
++				/*      Check if the whole transfer was completed,
++				 *      if no, setup transfer for next portion of data
++				 */
++				if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
++					dwc_otg_ep_start_transfer(core_if,
++								  &ep->dwc_ep);
++				} else if (ep->dwc_ep.sent_zlp) {
++					/*
++					 * This fragment of code should initiate 0
++					 * length trasfer in case if it is queued
++					 * a trasfer with size divisible to EPs max
++					 * packet size and with usb_request zero field
++					 * is set, which means that after data is transfered,
++					 * it is also should be transfered
++					 * a 0 length packet at the end. For Slave and
++					 * Buffer DMA modes in this case SW has
++					 * to initiate 2 transfers one with transfer size,
++					 * and the second with 0 size. For Desriptor
++					 * DMA mode SW is able to initiate a transfer,
++					 * which will handle all the packets including
++					 * the last  0 legth.
++					 */
++					ep->dwc_ep.sent_zlp = 0;
++					dwc_otg_ep_start_zl_transfer(core_if,
++								     &ep->dwc_ep);
++				} else {
++					is_last = 1;
++				}
++			}
++		} else {
++			/*      Check if the whole transfer was completed,
++			 *      if no, setup transfer for next portion of data
++			 */
++			if (ep->dwc_ep.xfer_len < ep->dwc_ep.total_len) {
++				dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
++			} else if (ep->dwc_ep.sent_zlp) {
++				/*
++				 * This fragment of code should initiate 0
++				 * length transfer in case if it is queued
++				 * a transfer with size divisible to EPs max
++				 * packet size and with usb_request zero field
++				 * is set, which means that after data is transfered,
++				 * it is also should be transfered
++				 * a 0 length packet at the end. For Slave and
++				 * Buffer DMA modes in this case SW has
++				 * to initiate 2 transfers one with transfer size,
++				 * and the second with 0 size. For Descriptor
++				 * DMA mode SW is able to initiate a transfer,
++				 * which will handle all the packets including
++				 * the last  0 length.
++				 */
++				ep->dwc_ep.sent_zlp = 0;
++				dwc_otg_ep_start_zl_transfer(core_if,
++							     &ep->dwc_ep);
++			} else {
++				is_last = 1;
++			}
++		}
++
++		DWC_DEBUGPL(DBG_PCDV,
++			    "addr %p,	 %d-%s len=%d cnt=%d xsize=%d pktcnt=%d\n",
++			    &out_ep_regs->doeptsiz, ep->dwc_ep.num,
++			    ep->dwc_ep.is_in ? "IN" : "OUT",
++			    ep->dwc_ep.xfer_len, ep->dwc_ep.xfer_count,
++			    deptsiz.b.xfersize, deptsiz.b.pktcnt);
++	}
++
++	/* Complete the request */
++	if (is_last) {
++#ifdef DWC_UTE_CFI
++		if (ep->dwc_ep.buff_mode != BM_STANDARD) {
++			req->actual = ep->dwc_ep.cfi_req_len - byte_count;
++		} else {
++#endif
++			req->actual = ep->dwc_ep.xfer_count;
++#ifdef DWC_UTE_CFI
++		}
++#endif
++		if (req->dw_align_buf) {
++			if (!ep->dwc_ep.is_in) {
++				dwc_memcpy(req->buf, req->dw_align_buf, req->length);
++			}
++			DWC_DMA_FREE(dev, req->length, req->dw_align_buf,
++				     req->dw_align_buf_dma);
++		}
++
++		dwc_otg_request_done(ep, req, 0);
++
++		ep->dwc_ep.start_xfer_buff = 0;
++		ep->dwc_ep.xfer_buff = 0;
++		ep->dwc_ep.xfer_len = 0;
++
++		/* If there is a request in the queue start it. */
++		start_next_request(ep);
++	}
++}
++
++#ifdef DWC_EN_ISOC
++
++/**
++ * This function BNA interrupt for Isochronous EPs
++ *
++ */
++static void dwc_otg_pcd_handle_iso_bna(dwc_otg_pcd_ep_t * ep)
++{
++	dwc_ep_t *dwc_ep = &ep->dwc_ep;
++	volatile uint32_t *addr;
++	depctl_data_t depctl = {.d32 = 0 };
++	dwc_otg_pcd_t *pcd = ep->pcd;
++	dwc_otg_dev_dma_desc_t *dma_desc;
++	int i;
++
++	dma_desc =
++	    dwc_ep->iso_desc_addr + dwc_ep->desc_cnt * (dwc_ep->proc_buf_num);
++
++	if (dwc_ep->is_in) {
++		dev_dma_desc_sts_t sts = {.d32 = 0 };
++		for (i = 0; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
++			sts.d32 = dma_desc->status.d32;
++			sts.b_iso_in.bs = BS_HOST_READY;
++			dma_desc->status.d32 = sts.d32;
++		}
++	} else {
++		dev_dma_desc_sts_t sts = {.d32 = 0 };
++		for (i = 0; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
++			sts.d32 = dma_desc->status.d32;
++			sts.b_iso_out.bs = BS_HOST_READY;
++			dma_desc->status.d32 = sts.d32;
++		}
++	}
++
++	if (dwc_ep->is_in == 0) {
++		addr =
++		    &GET_CORE_IF(pcd)->dev_if->out_ep_regs[dwc_ep->
++							   num]->doepctl;
++	} else {
++		addr =
++		    &GET_CORE_IF(pcd)->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
++	}
++	depctl.b.epena = 1;
++	DWC_MODIFY_REG32(addr, depctl.d32, depctl.d32);
++}
++
++/**
++ * This function sets latest iso packet information(non-PTI mode)
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ *
++ */
++void set_current_pkt_info(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	deptsiz_data_t deptsiz = {.d32 = 0 };
++	dma_addr_t dma_addr;
++	uint32_t offset;
++
++	if (ep->proc_buf_num)
++		dma_addr = ep->dma_addr1;
++	else
++		dma_addr = ep->dma_addr0;
++
++	if (ep->is_in) {
++		deptsiz.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->
++				   in_ep_regs[ep->num]->dieptsiz);
++		offset = ep->data_per_frame;
++	} else {
++		deptsiz.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->
++				   out_ep_regs[ep->num]->doeptsiz);
++		offset =
++		    ep->data_per_frame +
++		    (0x4 & (0x4 - (ep->data_per_frame & 0x3)));
++	}
++
++	if (!deptsiz.b.xfersize) {
++		ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
++		ep->pkt_info[ep->cur_pkt].offset =
++		    ep->cur_pkt_dma_addr - dma_addr;
++		ep->pkt_info[ep->cur_pkt].status = 0;
++	} else {
++		ep->pkt_info[ep->cur_pkt].length = ep->data_per_frame;
++		ep->pkt_info[ep->cur_pkt].offset =
++		    ep->cur_pkt_dma_addr - dma_addr;
++		ep->pkt_info[ep->cur_pkt].status = -DWC_E_NO_DATA;
++	}
++	ep->cur_pkt_addr += offset;
++	ep->cur_pkt_dma_addr += offset;
++	ep->cur_pkt++;
++}
++
++/**
++ * This function sets latest iso packet information(DDMA mode)
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param dwc_ep The EP to start the transfer on.
++ *
++ */
++static void set_ddma_iso_pkts_info(dwc_otg_core_if_t * core_if,
++				   dwc_ep_t * dwc_ep)
++{
++	dwc_otg_dev_dma_desc_t *dma_desc;
++	dev_dma_desc_sts_t sts = {.d32 = 0 };
++	iso_pkt_info_t *iso_packet;
++	uint32_t data_per_desc;
++	uint32_t offset;
++	int i, j;
++
++	iso_packet = dwc_ep->pkt_info;
++
++	/** Reinit closed DMA Descriptors*/
++	/** ISO OUT EP */
++	if (dwc_ep->is_in == 0) {
++		dma_desc =
++		    dwc_ep->iso_desc_addr +
++		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
++		offset = 0;
++
++		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
++		     i += dwc_ep->pkt_per_frm) {
++			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
++				data_per_desc =
++				    ((j + 1) * dwc_ep->maxpacket >
++				     dwc_ep->
++				     data_per_frame) ? dwc_ep->data_per_frame -
++				    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
++				data_per_desc +=
++				    (data_per_desc % 4) ? (4 -
++							   data_per_desc %
++							   4) : 0;
++
++				sts.d32 = dma_desc->status.d32;
++
++				/* Write status in iso_packet_decsriptor  */
++				iso_packet->status =
++				    sts.b_iso_out.rxsts +
++				    (sts.b_iso_out.bs ^ BS_DMA_DONE);
++				if (iso_packet->status) {
++					iso_packet->status = -DWC_E_NO_DATA;
++				}
++
++				/* Received data length */
++				if (!sts.b_iso_out.rxbytes) {
++					iso_packet->length =
++					    data_per_desc -
++					    sts.b_iso_out.rxbytes;
++				} else {
++					iso_packet->length =
++					    data_per_desc -
++					    sts.b_iso_out.rxbytes + (4 -
++								     dwc_ep->data_per_frame
++								     % 4);
++				}
++
++				iso_packet->offset = offset;
++
++				offset += data_per_desc;
++				dma_desc++;
++				iso_packet++;
++			}
++		}
++
++		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
++			data_per_desc =
++			    ((j + 1) * dwc_ep->maxpacket >
++			     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
++			    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
++			data_per_desc +=
++			    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
++
++			sts.d32 = dma_desc->status.d32;
++
++			/* Write status in iso_packet_decsriptor  */
++			iso_packet->status =
++			    sts.b_iso_out.rxsts +
++			    (sts.b_iso_out.bs ^ BS_DMA_DONE);
++			if (iso_packet->status) {
++				iso_packet->status = -DWC_E_NO_DATA;
++			}
++
++			/* Received data length */
++			iso_packet->length =
++			    dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
++
++			iso_packet->offset = offset;
++
++			offset += data_per_desc;
++			iso_packet++;
++			dma_desc++;
++		}
++
++		sts.d32 = dma_desc->status.d32;
++
++		/* Write status in iso_packet_decsriptor  */
++		iso_packet->status =
++		    sts.b_iso_out.rxsts + (sts.b_iso_out.bs ^ BS_DMA_DONE);
++		if (iso_packet->status) {
++			iso_packet->status = -DWC_E_NO_DATA;
++		}
++		/* Received data length */
++		if (!sts.b_iso_out.rxbytes) {
++			iso_packet->length =
++			    dwc_ep->data_per_frame - sts.b_iso_out.rxbytes;
++		} else {
++			iso_packet->length =
++			    dwc_ep->data_per_frame - sts.b_iso_out.rxbytes +
++			    (4 - dwc_ep->data_per_frame % 4);
++		}
++
++		iso_packet->offset = offset;
++	} else {
++/** ISO IN EP */
++
++		dma_desc =
++		    dwc_ep->iso_desc_addr +
++		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
++
++		for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
++			sts.d32 = dma_desc->status.d32;
++
++			/* Write status in iso packet descriptor */
++			iso_packet->status =
++			    sts.b_iso_in.txsts +
++			    (sts.b_iso_in.bs ^ BS_DMA_DONE);
++			if (iso_packet->status != 0) {
++				iso_packet->status = -DWC_E_NO_DATA;
++
++			}
++			/* Bytes has been transfered */
++			iso_packet->length =
++			    dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
++
++			dma_desc++;
++			iso_packet++;
++		}
++
++		sts.d32 = dma_desc->status.d32;
++		while (sts.b_iso_in.bs == BS_DMA_BUSY) {
++			sts.d32 = dma_desc->status.d32;
++		}
++
++		/* Write status in iso packet descriptor ??? do be done with ERROR codes */
++		iso_packet->status =
++		    sts.b_iso_in.txsts + (sts.b_iso_in.bs ^ BS_DMA_DONE);
++		if (iso_packet->status != 0) {
++			iso_packet->status = -DWC_E_NO_DATA;
++		}
++
++		/* Bytes has been transfered */
++		iso_packet->length =
++		    dwc_ep->data_per_frame - sts.b_iso_in.txbytes;
++	}
++}
++
++/**
++ * This function reinitialize DMA Descriptors for Isochronous transfer
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param dwc_ep The EP to start the transfer on.
++ *
++ */
++static void reinit_ddma_iso_xfer(dwc_otg_core_if_t * core_if, dwc_ep_t * dwc_ep)
++{
++	int i, j;
++	dwc_otg_dev_dma_desc_t *dma_desc;
++	dma_addr_t dma_ad;
++	volatile uint32_t *addr;
++	dev_dma_desc_sts_t sts = {.d32 = 0 };
++	uint32_t data_per_desc;
++
++	if (dwc_ep->is_in == 0) {
++		addr = &core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl;
++	} else {
++		addr = &core_if->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
++	}
++
++	if (dwc_ep->proc_buf_num == 0) {
++		/** Buffer 0 descriptors setup */
++		dma_ad = dwc_ep->dma_addr0;
++	} else {
++		/** Buffer 1 descriptors setup */
++		dma_ad = dwc_ep->dma_addr1;
++	}
++
++	/** Reinit closed DMA Descriptors*/
++	/** ISO OUT EP */
++	if (dwc_ep->is_in == 0) {
++		dma_desc =
++		    dwc_ep->iso_desc_addr +
++		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
++
++		sts.b_iso_out.bs = BS_HOST_READY;
++		sts.b_iso_out.rxsts = 0;
++		sts.b_iso_out.l = 0;
++		sts.b_iso_out.sp = 0;
++		sts.b_iso_out.ioc = 0;
++		sts.b_iso_out.pid = 0;
++		sts.b_iso_out.framenum = 0;
++
++		for (i = 0; i < dwc_ep->desc_cnt - dwc_ep->pkt_per_frm;
++		     i += dwc_ep->pkt_per_frm) {
++			for (j = 0; j < dwc_ep->pkt_per_frm; ++j) {
++				data_per_desc =
++				    ((j + 1) * dwc_ep->maxpacket >
++				     dwc_ep->
++				     data_per_frame) ? dwc_ep->data_per_frame -
++				    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
++				data_per_desc +=
++				    (data_per_desc % 4) ? (4 -
++							   data_per_desc %
++							   4) : 0;
++				sts.b_iso_out.rxbytes = data_per_desc;
++				dma_desc->buf = dma_ad;
++				dma_desc->status.d32 = sts.d32;
++
++				dma_ad += data_per_desc;
++				dma_desc++;
++			}
++		}
++
++		for (j = 0; j < dwc_ep->pkt_per_frm - 1; ++j) {
++
++			data_per_desc =
++			    ((j + 1) * dwc_ep->maxpacket >
++			     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
++			    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
++			data_per_desc +=
++			    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
++			sts.b_iso_out.rxbytes = data_per_desc;
++
++			dma_desc->buf = dma_ad;
++			dma_desc->status.d32 = sts.d32;
++
++			dma_desc++;
++			dma_ad += data_per_desc;
++		}
++
++		sts.b_iso_out.ioc = 1;
++		sts.b_iso_out.l = dwc_ep->proc_buf_num;
++
++		data_per_desc =
++		    ((j + 1) * dwc_ep->maxpacket >
++		     dwc_ep->data_per_frame) ? dwc_ep->data_per_frame -
++		    j * dwc_ep->maxpacket : dwc_ep->maxpacket;
++		data_per_desc +=
++		    (data_per_desc % 4) ? (4 - data_per_desc % 4) : 0;
++		sts.b_iso_out.rxbytes = data_per_desc;
++
++		dma_desc->buf = dma_ad;
++		dma_desc->status.d32 = sts.d32;
++	} else {
++/** ISO IN EP */
++
++		dma_desc =
++		    dwc_ep->iso_desc_addr +
++		    dwc_ep->desc_cnt * dwc_ep->proc_buf_num;
++
++		sts.b_iso_in.bs = BS_HOST_READY;
++		sts.b_iso_in.txsts = 0;
++		sts.b_iso_in.sp = 0;
++		sts.b_iso_in.ioc = 0;
++		sts.b_iso_in.pid = dwc_ep->pkt_per_frm;
++		sts.b_iso_in.framenum = dwc_ep->next_frame;
++		sts.b_iso_in.txbytes = dwc_ep->data_per_frame;
++		sts.b_iso_in.l = 0;
++
++		for (i = 0; i < dwc_ep->desc_cnt - 1; i++) {
++			dma_desc->buf = dma_ad;
++			dma_desc->status.d32 = sts.d32;
++
++			sts.b_iso_in.framenum += dwc_ep->bInterval;
++			dma_ad += dwc_ep->data_per_frame;
++			dma_desc++;
++		}
++
++		sts.b_iso_in.ioc = 1;
++		sts.b_iso_in.l = dwc_ep->proc_buf_num;
++
++		dma_desc->buf = dma_ad;
++		dma_desc->status.d32 = sts.d32;
++
++		dwc_ep->next_frame =
++		    sts.b_iso_in.framenum + dwc_ep->bInterval * 1;
++	}
++	dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
++}
++
++/**
++ * This function is to handle Iso EP transfer complete interrupt
++ * in case Iso out packet was dropped
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param dwc_ep The EP for wihich transfer complete was asserted
++ *
++ */
++static uint32_t handle_iso_out_pkt_dropped(dwc_otg_core_if_t * core_if,
++					   dwc_ep_t * dwc_ep)
++{
++	uint32_t dma_addr;
++	uint32_t drp_pkt;
++	uint32_t drp_pkt_cnt;
++	deptsiz_data_t deptsiz = {.d32 = 0 };
++	depctl_data_t depctl = {.d32 = 0 };
++	int i;
++
++	deptsiz.d32 =
++	    DWC_READ_REG32(&core_if->dev_if->
++			   out_ep_regs[dwc_ep->num]->doeptsiz);
++
++	drp_pkt = dwc_ep->pkt_cnt - deptsiz.b.pktcnt;
++	drp_pkt_cnt = dwc_ep->pkt_per_frm - (drp_pkt % dwc_ep->pkt_per_frm);
++
++	/* Setting dropped packets status */
++	for (i = 0; i < drp_pkt_cnt; ++i) {
++		dwc_ep->pkt_info[drp_pkt].status = -DWC_E_NO_DATA;
++		drp_pkt++;
++		deptsiz.b.pktcnt--;
++	}
++
++	if (deptsiz.b.pktcnt > 0) {
++		deptsiz.b.xfersize =
++		    dwc_ep->xfer_len - (dwc_ep->pkt_cnt -
++					deptsiz.b.pktcnt) * dwc_ep->maxpacket;
++	} else {
++		deptsiz.b.xfersize = 0;
++		deptsiz.b.pktcnt = 0;
++	}
++
++	DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz,
++			deptsiz.d32);
++
++	if (deptsiz.b.pktcnt > 0) {
++		if (dwc_ep->proc_buf_num) {
++			dma_addr =
++			    dwc_ep->dma_addr1 + dwc_ep->xfer_len -
++			    deptsiz.b.xfersize;
++		} else {
++			dma_addr =
++			    dwc_ep->dma_addr0 + dwc_ep->xfer_len -
++			    deptsiz.b.xfersize;;
++		}
++
++		DWC_WRITE_REG32(&core_if->dev_if->
++				out_ep_regs[dwc_ep->num]->doepdma, dma_addr);
++
++		/** Re-enable endpoint, clear nak  */
++		depctl.d32 = 0;
++		depctl.b.epena = 1;
++		depctl.b.cnak = 1;
++
++		DWC_MODIFY_REG32(&core_if->dev_if->
++				 out_ep_regs[dwc_ep->num]->doepctl, depctl.d32,
++				 depctl.d32);
++		return 0;
++	} else {
++		return 1;
++	}
++}
++
++/**
++ * This function sets iso packets information(PTI mode)
++ *
++ * @param core_if Programming view of DWC_otg controller.
++ * @param ep The EP to start the transfer on.
++ *
++ */
++static uint32_t set_iso_pkts_info(dwc_otg_core_if_t * core_if, dwc_ep_t * ep)
++{
++	int i, j;
++	dma_addr_t dma_ad;
++	iso_pkt_info_t *packet_info = ep->pkt_info;
++	uint32_t offset;
++	uint32_t frame_data;
++	deptsiz_data_t deptsiz;
++
++	if (ep->proc_buf_num == 0) {
++		/** Buffer 0 descriptors setup */
++		dma_ad = ep->dma_addr0;
++	} else {
++		/** Buffer 1 descriptors setup */
++		dma_ad = ep->dma_addr1;
++	}
++
++	if (ep->is_in) {
++		deptsiz.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->in_ep_regs[ep->num]->
++				   dieptsiz);
++	} else {
++		deptsiz.d32 =
++		    DWC_READ_REG32(&core_if->dev_if->out_ep_regs[ep->num]->
++				   doeptsiz);
++	}
++
++	if (!deptsiz.b.xfersize) {
++		offset = 0;
++		for (i = 0; i < ep->pkt_cnt; i += ep->pkt_per_frm) {
++			frame_data = ep->data_per_frame;
++			for (j = 0; j < ep->pkt_per_frm; ++j) {
++
++				/* Packet status - is not set as initially
++				 * it is set to 0 and if packet was sent
++				 successfully, status field will remain 0*/
++
++				/* Bytes has been transfered */
++				packet_info->length =
++				    (ep->maxpacket <
++				     frame_data) ? ep->maxpacket : frame_data;
++
++				/* Received packet offset */
++				packet_info->offset = offset;
++				offset += packet_info->length;
++				frame_data -= packet_info->length;
++
++				packet_info++;
++			}
++		}
++		return 1;
++	} else {
++		/* This is a workaround for in case of Transfer Complete with
++		 * PktDrpSts interrupts merging - in this case Transfer complete
++		 * interrupt for Isoc Out Endpoint is asserted without PktDrpSts
++		 * set and with DOEPTSIZ register non zero. Investigations showed,
++		 * that this happens when Out packet is dropped, but because of
++		 * interrupts merging during first interrupt handling PktDrpSts
++		 * bit is cleared and for next merged interrupts it is not reset.
++		 * In this case SW hadles the interrupt as if PktDrpSts bit is set.
++		 */
++		if (ep->is_in) {
++			return 1;
++		} else {
++			return handle_iso_out_pkt_dropped(core_if, ep);
++		}
++	}
++}
++
++/**
++ * This function is to handle Iso EP transfer complete interrupt
++ *
++ * @param pcd The PCD
++ * @param ep The EP for which transfer complete was asserted
++ *
++ */
++static void complete_iso_ep(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(ep->pcd);
++	dwc_ep_t *dwc_ep = &ep->dwc_ep;
++	uint8_t is_last = 0;
++
++	if (ep->dwc_ep.next_frame == 0xffffffff) {
++		DWC_WARN("Next frame is not set!\n");
++		return;
++	}
++
++	if (core_if->dma_enable) {
++		if (core_if->dma_desc_enable) {
++			set_ddma_iso_pkts_info(core_if, dwc_ep);
++			reinit_ddma_iso_xfer(core_if, dwc_ep);
++			is_last = 1;
++		} else {
++			if (core_if->pti_enh_enable) {
++				if (set_iso_pkts_info(core_if, dwc_ep)) {
++					dwc_ep->proc_buf_num =
++					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
++					dwc_otg_iso_ep_start_buf_transfer
++					    (core_if, dwc_ep);
++					is_last = 1;
++				}
++			} else {
++				set_current_pkt_info(core_if, dwc_ep);
++				if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
++					is_last = 1;
++					dwc_ep->cur_pkt = 0;
++					dwc_ep->proc_buf_num =
++					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
++					if (dwc_ep->proc_buf_num) {
++						dwc_ep->cur_pkt_addr =
++						    dwc_ep->xfer_buff1;
++						dwc_ep->cur_pkt_dma_addr =
++						    dwc_ep->dma_addr1;
++					} else {
++						dwc_ep->cur_pkt_addr =
++						    dwc_ep->xfer_buff0;
++						dwc_ep->cur_pkt_dma_addr =
++						    dwc_ep->dma_addr0;
++					}
++
++				}
++				dwc_otg_iso_ep_start_frm_transfer(core_if,
++								  dwc_ep);
++			}
++		}
++	} else {
++		set_current_pkt_info(core_if, dwc_ep);
++		if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
++			is_last = 1;
++			dwc_ep->cur_pkt = 0;
++			dwc_ep->proc_buf_num = (dwc_ep->proc_buf_num ^ 1) & 0x1;
++			if (dwc_ep->proc_buf_num) {
++				dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff1;
++				dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr1;
++			} else {
++				dwc_ep->cur_pkt_addr = dwc_ep->xfer_buff0;
++				dwc_ep->cur_pkt_dma_addr = dwc_ep->dma_addr0;
++			}
++
++		}
++		dwc_otg_iso_ep_start_frm_transfer(core_if, dwc_ep);
++	}
++	if (is_last)
++		dwc_otg_iso_buffer_done(pcd, ep, ep->iso_req_handle);
++}
++#endif /* DWC_EN_ISOC */
++
++/**
++ * This function handle BNA interrupt for Non Isochronous EPs
++ *
++ */
++static void dwc_otg_pcd_handle_noniso_bna(dwc_otg_pcd_ep_t * ep)
++{
++	dwc_ep_t *dwc_ep = &ep->dwc_ep;
++	volatile uint32_t *addr;
++	depctl_data_t depctl = {.d32 = 0 };
++	dwc_otg_pcd_t *pcd = ep->pcd;
++	dwc_otg_dev_dma_desc_t *dma_desc;
++	dev_dma_desc_sts_t sts = {.d32 = 0 };
++	dwc_otg_core_if_t *core_if = ep->pcd->core_if;
++	int i, start;
++
++	if (!dwc_ep->desc_cnt)
++		DWC_WARN("Ep%d %s Descriptor count = %d \n", dwc_ep->num,
++			 (dwc_ep->is_in ? "IN" : "OUT"), dwc_ep->desc_cnt);
++
++	if (core_if->core_params->cont_on_bna && !dwc_ep->is_in
++							&& dwc_ep->type != DWC_OTG_EP_TYPE_CONTROL) {
++		uint32_t doepdma;
++		dwc_otg_dev_out_ep_regs_t *out_regs =
++			core_if->dev_if->out_ep_regs[dwc_ep->num];
++		doepdma = DWC_READ_REG32(&(out_regs->doepdma));
++		start = (doepdma - dwc_ep->dma_desc_addr)/sizeof(dwc_otg_dev_dma_desc_t);
++		dma_desc = &(dwc_ep->desc_addr[start]);
++	} else {
++		start = 0;
++		dma_desc = dwc_ep->desc_addr;
++	}
++
++
++	for (i = start; i < dwc_ep->desc_cnt; ++i, ++dma_desc) {
++		sts.d32 = dma_desc->status.d32;
++		sts.b.bs = BS_HOST_READY;
++		dma_desc->status.d32 = sts.d32;
++	}
++
++	if (dwc_ep->is_in == 0) {
++		addr =
++		    &GET_CORE_IF(pcd)->dev_if->out_ep_regs[dwc_ep->num]->
++		    doepctl;
++	} else {
++		addr =
++		    &GET_CORE_IF(pcd)->dev_if->in_ep_regs[dwc_ep->num]->diepctl;
++	}
++	depctl.b.epena = 1;
++	depctl.b.cnak = 1;
++	DWC_MODIFY_REG32(addr, 0, depctl.d32);
++}
++
++/**
++ * This function handles EP0 Control transfers.
++ *
++ * The state of the control transfers are tracked in
++ * <code>ep0state</code>.
++ */
++static void handle_ep0(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_pcd_ep_t *ep0 = &pcd->ep0;
++	dev_dma_desc_sts_t desc_sts;
++	deptsiz0_data_t deptsiz;
++	uint32_t byte_count;
++
++#ifdef DEBUG_EP0
++	DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
++	print_ep0_state(pcd);
++#endif
++
++//      DWC_PRINTF("HANDLE EP0\n");
++
++	switch (pcd->ep0state) {
++	case EP0_DISCONNECT:
++		break;
++
++	case EP0_IDLE:
++		pcd->request_config = 0;
++
++		pcd_setup(pcd);
++		break;
++
++	case EP0_IN_DATA_PHASE:
++#ifdef DEBUG_EP0
++		DWC_DEBUGPL(DBG_PCD, "DATA_IN EP%d-%s: type=%d, mps=%d\n",
++			    ep0->dwc_ep.num, (ep0->dwc_ep.is_in ? "IN" : "OUT"),
++			    ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
++#endif
++
++		if (core_if->dma_enable != 0) {
++			/*
++			 * For EP0 we can only program 1 packet at a time so we
++			 * need to do the make calculations after each complete.
++			 * Call write_packet to make the calculations, as in
++			 * slave mode, and use those values to determine if we
++			 * can complete.
++			 */
++			if (core_if->dma_desc_enable == 0) {
++				deptsiz.d32 =
++				    DWC_READ_REG32(&core_if->
++						   dev_if->in_ep_regs[0]->
++						   dieptsiz);
++				byte_count =
++				    ep0->dwc_ep.xfer_len - deptsiz.b.xfersize;
++			} else {
++				desc_sts =
++				    core_if->dev_if->in_desc_addr->status;
++				byte_count =
++				    ep0->dwc_ep.xfer_len - desc_sts.b.bytes;
++			}
++			ep0->dwc_ep.xfer_count += byte_count;
++			ep0->dwc_ep.xfer_buff += byte_count;
++			ep0->dwc_ep.dma_addr += byte_count;
++		}
++		if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
++			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
++						      &ep0->dwc_ep);
++			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
++		} else if (ep0->dwc_ep.sent_zlp) {
++			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
++						      &ep0->dwc_ep);
++			ep0->dwc_ep.sent_zlp = 0;
++			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER sent zlp\n");
++		} else {
++			ep0_complete_request(ep0);
++			DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
++		}
++		break;
++	case EP0_OUT_DATA_PHASE:
++#ifdef DEBUG_EP0
++		DWC_DEBUGPL(DBG_PCD, "DATA_OUT EP%d-%s: type=%d, mps=%d\n",
++			    ep0->dwc_ep.num, (ep0->dwc_ep.is_in ? "IN" : "OUT"),
++			    ep0->dwc_ep.type, ep0->dwc_ep.maxpacket);
++#endif
++		if (core_if->dma_enable != 0) {
++			if (core_if->dma_desc_enable == 0) {
++				deptsiz.d32 =
++				    DWC_READ_REG32(&core_if->
++						   dev_if->out_ep_regs[0]->
++						   doeptsiz);
++				byte_count =
++				    ep0->dwc_ep.maxpacket - deptsiz.b.xfersize;
++			} else {
++				desc_sts =
++				    core_if->dev_if->out_desc_addr->status;
++				byte_count =
++				    ep0->dwc_ep.maxpacket - desc_sts.b.bytes;
++			}
++			ep0->dwc_ep.xfer_count += byte_count;
++			ep0->dwc_ep.xfer_buff += byte_count;
++			ep0->dwc_ep.dma_addr += byte_count;
++		}
++		if (ep0->dwc_ep.xfer_count < ep0->dwc_ep.total_len) {
++			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
++						      &ep0->dwc_ep);
++			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER\n");
++		} else if (ep0->dwc_ep.sent_zlp) {
++			dwc_otg_ep0_continue_transfer(GET_CORE_IF(pcd),
++						      &ep0->dwc_ep);
++			ep0->dwc_ep.sent_zlp = 0;
++			DWC_DEBUGPL(DBG_PCD, "CONTINUE TRANSFER sent zlp\n");
++		} else {
++			ep0_complete_request(ep0);
++			DWC_DEBUGPL(DBG_PCD, "COMPLETE TRANSFER\n");
++		}
++		break;
++
++	case EP0_IN_STATUS_PHASE:
++	case EP0_OUT_STATUS_PHASE:
++		DWC_DEBUGPL(DBG_PCD, "CASE: EP0_STATUS\n");
++		ep0_complete_request(ep0);
++		pcd->ep0state = EP0_IDLE;
++		ep0->stopped = 1;
++		ep0->dwc_ep.is_in = 0;	/* OUT for next SETUP */
++
++		/* Prepare for more SETUP Packets */
++		if (core_if->dma_enable) {
++			ep0_out_start(core_if, pcd);
++		}
++		break;
++
++	case EP0_STALL:
++		DWC_ERROR("EP0 STALLed, should not get here pcd_setup()\n");
++		break;
++	}
++#ifdef DEBUG_EP0
++	print_ep0_state(pcd);
++#endif
++}
++
++/**
++ * Restart transfer
++ */
++static void restart_transfer(dwc_otg_pcd_t * pcd, const uint32_t epnum)
++{
++	dwc_otg_core_if_t *core_if;
++	dwc_otg_dev_if_t *dev_if;
++	deptsiz_data_t dieptsiz = {.d32 = 0 };
++	dwc_otg_pcd_ep_t *ep;
++
++	ep = get_in_ep(pcd, epnum);
++
++#ifdef DWC_EN_ISOC
++	if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
++		return;
++	}
++#endif /* DWC_EN_ISOC  */
++
++	core_if = GET_CORE_IF(pcd);
++	dev_if = core_if->dev_if;
++
++	dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dieptsiz);
++
++	DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x xfer_len=%0x"
++		    " stopped=%d\n", ep->dwc_ep.xfer_buff,
++		    ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len, ep->stopped);
++	/*
++	 * If xfersize is 0 and pktcnt in not 0, resend the last packet.
++	 */
++	if (dieptsiz.b.pktcnt && dieptsiz.b.xfersize == 0 &&
++	    ep->dwc_ep.start_xfer_buff != 0) {
++		if (ep->dwc_ep.total_len <= ep->dwc_ep.maxpacket) {
++			ep->dwc_ep.xfer_count = 0;
++			ep->dwc_ep.xfer_buff = ep->dwc_ep.start_xfer_buff;
++			ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
++		} else {
++			ep->dwc_ep.xfer_count -= ep->dwc_ep.maxpacket;
++			/* convert packet size to dwords. */
++			ep->dwc_ep.xfer_buff -= ep->dwc_ep.maxpacket;
++			ep->dwc_ep.xfer_len = ep->dwc_ep.xfer_count;
++		}
++		ep->stopped = 0;
++		DWC_DEBUGPL(DBG_PCD, "xfer_buff=%p xfer_count=%0x "
++			    "xfer_len=%0x stopped=%d\n",
++			    ep->dwc_ep.xfer_buff,
++			    ep->dwc_ep.xfer_count, ep->dwc_ep.xfer_len,
++			    ep->stopped);
++		if (epnum == 0) {
++			dwc_otg_ep0_start_transfer(core_if, &ep->dwc_ep);
++		} else {
++			dwc_otg_ep_start_transfer(core_if, &ep->dwc_ep);
++		}
++	}
++}
++
++/*
++ * This function create new nextep sequnce based on Learn Queue.
++ *
++ * @param core_if Programming view of DWC_otg controller
++ */
++void predict_nextep_seq( dwc_otg_core_if_t * core_if)
++{
++	dwc_otg_device_global_regs_t *dev_global_regs =
++	    core_if->dev_if->dev_global_regs;
++	const uint32_t TOKEN_Q_DEPTH = core_if->hwcfg2.b.dev_token_q_depth;
++	/* Number of Token Queue Registers */
++	const int DTKNQ_REG_CNT = (TOKEN_Q_DEPTH + 7) / 8;
++	dtknq1_data_t dtknqr1;
++	uint32_t in_tkn_epnums[4];
++	uint8_t seqnum[MAX_EPS_CHANNELS];
++	uint8_t intkn_seq[TOKEN_Q_DEPTH];
++	grstctl_t resetctl = {.d32 = 0 };
++	uint8_t temp;
++	int ndx = 0;
++	int start = 0;
++	int end = 0;
++	int sort_done = 0;
++	int i = 0;
++	volatile uint32_t *addr = &dev_global_regs->dtknqr1;
++
++
++	DWC_DEBUGPL(DBG_PCD,"dev_token_q_depth=%d\n",TOKEN_Q_DEPTH);
++
++	/* Read the DTKNQ Registers */
++	for (i = 0; i < DTKNQ_REG_CNT; i++) {
++		in_tkn_epnums[i] = DWC_READ_REG32(addr);
++		DWC_DEBUGPL(DBG_PCDV, "DTKNQR%d=0x%08x\n", i + 1,
++			    in_tkn_epnums[i]);
++		if (addr == &dev_global_regs->dvbusdis) {
++			addr = &dev_global_regs->dtknqr3_dthrctl;
++		} else {
++			++addr;
++		}
++
++	}
++
++	/* Copy the DTKNQR1 data to the bit field. */
++	dtknqr1.d32 = in_tkn_epnums[0];
++	if (dtknqr1.b.wrap_bit) {
++		ndx = dtknqr1.b.intknwptr;
++		end = ndx -1;
++		if (end < 0)
++			end = TOKEN_Q_DEPTH -1;
++	} else {
++		ndx = 0;
++		end = dtknqr1.b.intknwptr -1;
++		if (end < 0)
++			end = 0;
++	}
++	start = ndx;
++
++	/* Fill seqnum[] by initial values: EP number + 31 */
++	for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
++		seqnum[i] = i +31;
++	}
++
++	/* Fill intkn_seq[] from in_tkn_epnums[0] */
++	for (i=0; i < 6; i++)
++		intkn_seq[i] = (in_tkn_epnums[0] >> ((7-i) * 4)) & 0xf;
++
++	if (TOKEN_Q_DEPTH > 6) {
++		/* Fill intkn_seq[] from in_tkn_epnums[1] */
++		for (i=6; i < 14; i++)
++			intkn_seq[i] =
++			    (in_tkn_epnums[1] >> ((7 - (i - 6)) * 4)) & 0xf;
++	}
++
++	if (TOKEN_Q_DEPTH > 14) {
++		/* Fill intkn_seq[] from in_tkn_epnums[1] */
++		for (i=14; i < 22; i++)
++			intkn_seq[i] =
++			    (in_tkn_epnums[2] >> ((7 - (i - 14)) * 4)) & 0xf;
++	}
++
++	if (TOKEN_Q_DEPTH > 22) {
++		/* Fill intkn_seq[] from in_tkn_epnums[1] */
++		for (i=22; i < 30; i++)
++			intkn_seq[i] =
++			    (in_tkn_epnums[3] >> ((7 - (i - 22)) * 4)) & 0xf;
++	}
++
++	DWC_DEBUGPL(DBG_PCDV, "%s start=%d end=%d intkn_seq[]:\n", __func__,
++		    start, end);
++	for (i=0; i<TOKEN_Q_DEPTH; i++)
++		DWC_DEBUGPL(DBG_PCDV,"%d\n", intkn_seq[i]);
++
++	/* Update seqnum based on intkn_seq[] */
++	i = 0;
++	do {
++		seqnum[intkn_seq[ndx]] = i;
++		ndx++;
++		i++;
++		if (ndx == TOKEN_Q_DEPTH)
++			ndx = 0;
++	} while ( i < TOKEN_Q_DEPTH );
++
++	/* Mark non active EP's in seqnum[] by 0xff */
++	for (i=0; i<=core_if->dev_if->num_in_eps; i++) {
++		if (core_if->nextep_seq[i] == 0xff )
++			seqnum[i] = 0xff;
++	}
++
++	/* Sort seqnum[] */
++	sort_done = 0;
++	while (!sort_done) {
++		sort_done = 1;
++		for (i=0; i<core_if->dev_if->num_in_eps; i++) {
++			if (seqnum[i] > seqnum[i+1]) {
++				temp = seqnum[i];
++				seqnum[i] = seqnum[i+1];
++				seqnum[i+1] = temp;
++				sort_done = 0;
++			}
++		}
++	}
++
++	ndx = start + seqnum[0];
++	if (ndx >= TOKEN_Q_DEPTH)
++		ndx = ndx % TOKEN_Q_DEPTH;
++	core_if->first_in_nextep_seq = intkn_seq[ndx];
++
++	/* Update seqnum[] by EP numbers  */
++	for (i=0; i<=core_if->dev_if->num_in_eps; i++) {
++		ndx = start + i;
++		if (seqnum[i] < 31) {
++			ndx = start + seqnum[i];
++			if (ndx >= TOKEN_Q_DEPTH)
++				ndx = ndx % TOKEN_Q_DEPTH;
++			seqnum[i] = intkn_seq[ndx];
++		} else {
++			if (seqnum[i] < 0xff) {
++				seqnum[i] = seqnum[i] - 31;
++			} else {
++				break;
++			}
++		}
++	}
++
++	/* Update nextep_seq[] based on seqnum[] */
++	for (i=0; i<core_if->dev_if->num_in_eps; i++) {
++		if (seqnum[i] != 0xff) {
++			if (seqnum[i+1] != 0xff) {
++				core_if->nextep_seq[seqnum[i]] = seqnum[i+1];
++			} else {
++				core_if->nextep_seq[seqnum[i]] = core_if->first_in_nextep_seq;
++				break;
++			}
++		} else {
++			break;
++		}
++	}
++
++	DWC_DEBUGPL(DBG_PCDV, "%s first_in_nextep_seq= %2d; nextep_seq[]:\n",
++		__func__, core_if->first_in_nextep_seq);
++	for (i=0; i <= core_if->dev_if->num_in_eps; i++) {
++		DWC_DEBUGPL(DBG_PCDV,"%2d\n", core_if->nextep_seq[i]);
++	}
++
++	/* Flush the Learning Queue */
++	resetctl.d32 = DWC_READ_REG32(&core_if->core_global_regs->grstctl);
++	resetctl.b.intknqflsh = 1;
++	DWC_WRITE_REG32(&core_if->core_global_regs->grstctl, resetctl.d32);
++
++
++}
++
++/**
++ * handle the IN EP disable interrupt.
++ */
++static inline void handle_in_ep_disable_intr(dwc_otg_pcd_t * pcd,
++					     const uint32_t epnum)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	deptsiz_data_t dieptsiz = {.d32 = 0 };
++	dctl_data_t dctl = {.d32 = 0 };
++	dwc_otg_pcd_ep_t *ep;
++	dwc_ep_t *dwc_ep;
++	gintmsk_data_t gintmsk_data;
++	depctl_data_t depctl;
++	uint32_t diepdma;
++	uint32_t remain_to_transfer = 0;
++	uint8_t i;
++	uint32_t xfer_size;
++
++	ep = get_in_ep(pcd, epnum);
++	dwc_ep = &ep->dwc_ep;
++
++	if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
++		dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
++		complete_ep(ep);
++		return;
++	}
++
++	DWC_DEBUGPL(DBG_PCD, "diepctl%d=%0x\n", epnum,
++		    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl));
++	dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->dieptsiz);
++	depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
++
++	DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
++		    dieptsiz.b.pktcnt, dieptsiz.b.xfersize);
++
++	if ((core_if->start_predict == 0) || (depctl.b.eptype & 1)) {
++		if (ep->stopped) {
++			if (core_if->en_multiple_tx_fifo)
++				/* Flush the Tx FIFO */
++				dwc_otg_flush_tx_fifo(core_if, dwc_ep->tx_fifo_num);
++			/* Clear the Global IN NP NAK */
++			dctl.d32 = 0;
++			dctl.b.cgnpinnak = 1;
++			DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
++			/* Restart the transaction */
++			if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) {
++				restart_transfer(pcd, epnum);
++			}
++		} else {
++			/* Restart the transaction */
++			if (dieptsiz.b.pktcnt != 0 || dieptsiz.b.xfersize != 0) {
++				restart_transfer(pcd, epnum);
++			}
++			DWC_DEBUGPL(DBG_ANY, "STOPPED!!!\n");
++		}
++		return;
++	}
++
++	if (core_if->start_predict > 2) {	// NP IN EP
++		core_if->start_predict--;
++		return;
++	}
++
++	core_if->start_predict--;
++
++	if (core_if->start_predict == 1) {	// All NP IN Ep's disabled now
++
++		predict_nextep_seq(core_if);
++
++		/* Update all active IN EP's NextEP field based of nextep_seq[] */
++		for ( i = 0; i <= core_if->dev_if->num_in_eps; i++) {
++			depctl.d32 =
++			    DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++			if (core_if->nextep_seq[i] != 0xff) {	// Active NP IN EP
++				depctl.b.nextep = core_if->nextep_seq[i];
++				DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
++			}
++		}
++		/* Flush Shared NP TxFIFO */
++		dwc_otg_flush_tx_fifo(core_if, 0);
++		/* Rewind buffers */
++		if (!core_if->dma_desc_enable) {
++			i = core_if->first_in_nextep_seq;
++			do {
++				ep = get_in_ep(pcd, i);
++				dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
++				xfer_size = ep->dwc_ep.total_len - ep->dwc_ep.xfer_count;
++				if (xfer_size > ep->dwc_ep.maxxfer)
++					xfer_size = ep->dwc_ep.maxxfer;
++				depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++				if (dieptsiz.b.pktcnt != 0) {
++					if (xfer_size == 0) {
++						remain_to_transfer = 0;
++					} else {
++						if ((xfer_size % ep->dwc_ep.maxpacket) == 0) {
++							remain_to_transfer =
++								dieptsiz.b.pktcnt * ep->dwc_ep.maxpacket;
++						} else {
++							remain_to_transfer = ((dieptsiz.b.pktcnt -1) * ep->dwc_ep.maxpacket)
++								+ (xfer_size % ep->dwc_ep.maxpacket);
++						}
++					}
++					diepdma = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepdma);
++					dieptsiz.b.xfersize = remain_to_transfer;
++					DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->dieptsiz, dieptsiz.d32);
++					diepdma = ep->dwc_ep.dma_addr + (xfer_size - remain_to_transfer);
++					DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepdma, diepdma);
++				}
++				i = core_if->nextep_seq[i];
++			} while (i != core_if->first_in_nextep_seq);
++		} else { // dma_desc_enable
++				DWC_PRINTF("%s Learning Queue not supported in DDMA\n", __func__);
++		}
++
++		/* Restart transfers in predicted sequences */
++		i = core_if->first_in_nextep_seq;
++		do {
++			dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
++			depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++			if (dieptsiz.b.pktcnt != 0) {
++				depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++				depctl.b.epena = 1;
++				depctl.b.cnak = 1;
++				DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32);
++			}
++			i = core_if->nextep_seq[i];
++		} while (i != core_if->first_in_nextep_seq);
++
++		/* Clear the global non-periodic IN NAK handshake */
++		dctl.d32 = 0;
++		dctl.b.cgnpinnak = 1;
++		DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
++
++		/* Unmask EP Mismatch interrupt */
++		gintmsk_data.d32 = 0;
++		gintmsk_data.b.epmismatch = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, gintmsk_data.d32);
++
++		core_if->start_predict = 0;
++
++	}
++}
++
++/**
++ * Handler for the IN EP timeout handshake interrupt.
++ */
++static inline void handle_in_ep_timeout_intr(dwc_otg_pcd_t * pcd,
++					     const uint32_t epnum)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++
++#ifdef DEBUG
++	deptsiz_data_t dieptsiz = {.d32 = 0 };
++	uint32_t num = 0;
++#endif
++	dctl_data_t dctl = {.d32 = 0 };
++	dwc_otg_pcd_ep_t *ep;
++
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	ep = get_in_ep(pcd, epnum);
++
++	/* Disable the NP Tx Fifo Empty Interrrupt */
++	if (!core_if->dma_enable) {
++		intr_mask.b.nptxfempty = 1;
++		DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
++				 intr_mask.d32, 0);
++	}
++	/** @todo NGS Check EP type.
++	 * Implement for Periodic EPs */
++	/*
++	 * Non-periodic EP
++	 */
++	/* Enable the Global IN NAK Effective Interrupt */
++	intr_mask.b.ginnakeff = 1;
++	DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk, 0, intr_mask.d32);
++
++	/* Set Global IN NAK */
++	dctl.b.sgnpinnak = 1;
++	DWC_MODIFY_REG32(&dev_if->dev_global_regs->dctl, dctl.d32, dctl.d32);
++
++	ep->stopped = 1;
++
++#ifdef DEBUG
++	dieptsiz.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[num]->dieptsiz);
++	DWC_DEBUGPL(DBG_ANY, "pktcnt=%d size=%d\n",
++		    dieptsiz.b.pktcnt, dieptsiz.b.xfersize);
++#endif
++
++#ifdef DISABLE_PERIODIC_EP
++	/*
++	 * Set the NAK bit for this EP to
++	 * start the disable process.
++	 */
++	diepctl.d32 = 0;
++	diepctl.b.snak = 1;
++	DWC_MODIFY_REG32(&dev_if->in_ep_regs[num]->diepctl, diepctl.d32,
++			 diepctl.d32);
++	ep->disabling = 1;
++	ep->stopped = 1;
++#endif
++}
++
++/**
++ * Handler for the IN EP NAK interrupt.
++ */
++static inline int32_t handle_in_ep_nak_intr(dwc_otg_pcd_t * pcd,
++					    const uint32_t epnum)
++{
++	/** @todo implement ISR */
++	dwc_otg_core_if_t *core_if;
++	diepmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "IN EP NAK");
++	core_if = GET_CORE_IF(pcd);
++	intr_mask.b.nak = 1;
++
++	if (core_if->multiproc_int_enable) {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++				 diepeachintmsk[epnum], intr_mask.d32, 0);
++	} else {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->diepmsk,
++				 intr_mask.d32, 0);
++	}
++
++	return 1;
++}
++
++/**
++ * Handler for the OUT EP Babble interrupt.
++ */
++static inline int32_t handle_out_ep_babble_intr(dwc_otg_pcd_t * pcd,
++						const uint32_t epnum)
++{
++	/** @todo implement ISR */
++	dwc_otg_core_if_t *core_if;
++	doepmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n",
++		   "OUT EP Babble");
++	core_if = GET_CORE_IF(pcd);
++	intr_mask.b.babble = 1;
++
++	if (core_if->multiproc_int_enable) {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++				 doepeachintmsk[epnum], intr_mask.d32, 0);
++	} else {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
++				 intr_mask.d32, 0);
++	}
++
++	return 1;
++}
++
++/**
++ * Handler for the OUT EP NAK interrupt.
++ */
++static inline int32_t handle_out_ep_nak_intr(dwc_otg_pcd_t * pcd,
++					     const uint32_t epnum)
++{
++	/** @todo implement ISR */
++	dwc_otg_core_if_t *core_if;
++	doepmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_ANY, "INTERRUPT Handler not implemented for %s\n", "OUT EP NAK");
++	core_if = GET_CORE_IF(pcd);
++	intr_mask.b.nak = 1;
++
++	if (core_if->multiproc_int_enable) {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++				 doepeachintmsk[epnum], intr_mask.d32, 0);
++	} else {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
++				 intr_mask.d32, 0);
++	}
++
++	return 1;
++}
++
++/**
++ * Handler for the OUT EP NYET interrupt.
++ */
++static inline int32_t handle_out_ep_nyet_intr(dwc_otg_pcd_t * pcd,
++					      const uint32_t epnum)
++{
++	/** @todo implement ISR */
++	dwc_otg_core_if_t *core_if;
++	doepmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_PRINTF("INTERRUPT Handler not implemented for %s\n", "OUT EP NYET");
++	core_if = GET_CORE_IF(pcd);
++	intr_mask.b.nyet = 1;
++
++	if (core_if->multiproc_int_enable) {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->
++				 doepeachintmsk[epnum], intr_mask.d32, 0);
++	} else {
++		DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
++				 intr_mask.d32, 0);
++	}
++
++	return 1;
++}
++
++/**
++ * This interrupt indicates that an IN EP has a pending Interrupt.
++ * The sequence for handling the IN EP interrupt is shown below:
++ * -#	Read the Device All Endpoint Interrupt register
++ * -#	Repeat the following for each IN EP interrupt bit set (from
++ *		LSB to MSB).
++ * -#	Read the Device Endpoint Interrupt (DIEPINTn) register
++ * -#	If "Transfer Complete" call the request complete function
++ * -#	If "Endpoint Disabled" complete the EP disable procedure.
++ * -#	If "AHB Error Interrupt" log error
++ * -#	If "Time-out Handshake" log error
++ * -#	If "IN Token Received when TxFIFO Empty" write packet to Tx
++ *		FIFO.
++ * -#	If "IN Token EP Mismatch" (disable, this is handled by EP
++ *		Mismatch Interrupt)
++ */
++static int32_t dwc_otg_pcd_handle_in_ep_intr(dwc_otg_pcd_t * pcd)
++{
++#define CLEAR_IN_EP_INTR(__core_if,__epnum,__intr) \
++do { \
++		diepint_data_t diepint = {.d32=0}; \
++		diepint.b.__intr = 1; \
++		DWC_WRITE_REG32(&__core_if->dev_if->in_ep_regs[__epnum]->diepint, \
++		diepint.d32); \
++} while (0)
++
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	dwc_otg_dev_if_t *dev_if = core_if->dev_if;
++	diepint_data_t diepint = {.d32 = 0 };
++	depctl_data_t depctl = {.d32 = 0 };
++	uint32_t ep_intr;
++	uint32_t epnum = 0;
++	dwc_otg_pcd_ep_t *ep;
++	dwc_ep_t *dwc_ep;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, pcd);
++
++	/* Read in the device interrupt bits */
++	ep_intr = dwc_otg_read_dev_all_in_ep_intr(core_if);
++
++	/* Service the Device IN interrupts for each endpoint */
++	while (ep_intr) {
++		if (ep_intr & 0x1) {
++			uint32_t empty_msk;
++			/* Get EP pointer */
++			ep = get_in_ep(pcd, epnum);
++			dwc_ep = &ep->dwc_ep;
++
++			depctl.d32 =
++			    DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
++			empty_msk =
++			    DWC_READ_REG32(&dev_if->
++					   dev_global_regs->dtknqr4_fifoemptymsk);
++
++			DWC_DEBUGPL(DBG_PCDV,
++				    "IN EP INTERRUPT - %d\nepmty_msk - %8x  diepctl - %8x\n",
++				    epnum, empty_msk, depctl.d32);
++
++			DWC_DEBUGPL(DBG_PCD,
++				    "EP%d-%s: type=%d, mps=%d\n",
++				    dwc_ep->num, (dwc_ep->is_in ? "IN" : "OUT"),
++				    dwc_ep->type, dwc_ep->maxpacket);
++
++			diepint.d32 =
++			    dwc_otg_read_dev_in_ep_intr(core_if, dwc_ep);
++
++			DWC_DEBUGPL(DBG_PCDV,
++				    "EP %d Interrupt Register - 0x%x\n", epnum,
++				    diepint.d32);
++			/* Transfer complete */
++			if (diepint.b.xfercompl) {
++				/* Disable the NP Tx FIFO Empty
++				 * Interrupt */
++				if (core_if->en_multiple_tx_fifo == 0) {
++					intr_mask.b.nptxfempty = 1;
++					DWC_MODIFY_REG32
++					    (&core_if->core_global_regs->gintmsk,
++					     intr_mask.d32, 0);
++				} else {
++					/* Disable the Tx FIFO Empty Interrupt for this EP */
++					uint32_t fifoemptymsk =
++					    0x1 << dwc_ep->num;
++					DWC_MODIFY_REG32(&core_if->
++							 dev_if->dev_global_regs->dtknqr4_fifoemptymsk,
++							 fifoemptymsk, 0);
++				}
++				/* Clear the bit in DIEPINTn for this interrupt */
++				CLEAR_IN_EP_INTR(core_if, epnum, xfercompl);
++
++				/* Complete the transfer */
++				if (epnum == 0) {
++					handle_ep0(pcd);
++				}
++#ifdef DWC_EN_ISOC
++				else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
++					if (!ep->stopped)
++						complete_iso_ep(pcd, ep);
++				}
++#endif /* DWC_EN_ISOC */
++#ifdef DWC_UTE_PER_IO
++				else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
++					if (!ep->stopped)
++						complete_xiso_ep(ep);
++				}
++#endif /* DWC_UTE_PER_IO */
++				else {
++					if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC &&
++							dwc_ep->bInterval > 1) {
++						dwc_ep->frame_num += dwc_ep->bInterval;
++						if (dwc_ep->frame_num > 0x3FFF)
++						{
++							dwc_ep->frm_overrun = 1;
++							dwc_ep->frame_num &= 0x3FFF;
++						} else
++							dwc_ep->frm_overrun = 0;
++					}
++					complete_ep(ep);
++					if(diepint.b.nak)
++						CLEAR_IN_EP_INTR(core_if, epnum, nak);
++				}
++			}
++			/* Endpoint disable      */
++			if (diepint.b.epdisabled) {
++				DWC_DEBUGPL(DBG_ANY, "EP%d IN disabled\n",
++					    epnum);
++				handle_in_ep_disable_intr(pcd, epnum);
++
++				/* Clear the bit in DIEPINTn for this interrupt */
++				CLEAR_IN_EP_INTR(core_if, epnum, epdisabled);
++			}
++			/* AHB Error */
++			if (diepint.b.ahberr) {
++				DWC_ERROR("EP%d IN AHB Error\n", epnum);
++				/* Clear the bit in DIEPINTn for this interrupt */
++				CLEAR_IN_EP_INTR(core_if, epnum, ahberr);
++			}
++			/* TimeOUT Handshake (non-ISOC IN EPs) */
++			if (diepint.b.timeout) {
++				DWC_ERROR("EP%d IN Time-out\n", epnum);
++				handle_in_ep_timeout_intr(pcd, epnum);
++
++				CLEAR_IN_EP_INTR(core_if, epnum, timeout);
++			}
++			/** IN Token received with TxF Empty */
++			if (diepint.b.intktxfemp) {
++				DWC_DEBUGPL(DBG_ANY,
++					    "EP%d IN TKN TxFifo Empty\n",
++					    epnum);
++				if (!ep->stopped && epnum != 0) {
++
++					diepmsk_data_t diepmsk = {.d32 = 0 };
++					diepmsk.b.intktxfemp = 1;
++
++					if (core_if->multiproc_int_enable) {
++						DWC_MODIFY_REG32
++						    (&dev_if->dev_global_regs->diepeachintmsk
++						     [epnum], diepmsk.d32, 0);
++					} else {
++						DWC_MODIFY_REG32
++						    (&dev_if->dev_global_regs->diepmsk,
++						     diepmsk.d32, 0);
++					}
++				} else if (core_if->dma_desc_enable
++					   && epnum == 0
++					   && pcd->ep0state ==
++					   EP0_OUT_STATUS_PHASE) {
++					// EP0 IN set STALL
++					depctl.d32 =
++					    DWC_READ_REG32(&dev_if->in_ep_regs
++							   [epnum]->diepctl);
++
++					/* set the disable and stall bits */
++					if (depctl.b.epena) {
++						depctl.b.epdis = 1;
++					}
++					depctl.b.stall = 1;
++					DWC_WRITE_REG32(&dev_if->in_ep_regs
++							[epnum]->diepctl,
++							depctl.d32);
++				}
++				CLEAR_IN_EP_INTR(core_if, epnum, intktxfemp);
++			}
++			/** IN Token Received with EP mismatch */
++			if (diepint.b.intknepmis) {
++				DWC_DEBUGPL(DBG_ANY,
++					    "EP%d IN TKN EP Mismatch\n", epnum);
++				CLEAR_IN_EP_INTR(core_if, epnum, intknepmis);
++			}
++			/** IN Endpoint NAK Effective */
++			if (diepint.b.inepnakeff) {
++				DWC_DEBUGPL(DBG_ANY,
++					    "EP%d IN EP NAK Effective\n",
++					    epnum);
++				/* Periodic EP */
++				if (ep->disabling) {
++					depctl.d32 = 0;
++					depctl.b.snak = 1;
++					depctl.b.epdis = 1;
++					DWC_MODIFY_REG32(&dev_if->in_ep_regs
++							 [epnum]->diepctl,
++							 depctl.d32,
++							 depctl.d32);
++				}
++				CLEAR_IN_EP_INTR(core_if, epnum, inepnakeff);
++
++			}
++
++			/** IN EP Tx FIFO Empty Intr */
++			if (diepint.b.emptyintr) {
++				DWC_DEBUGPL(DBG_ANY,
++					    "EP%d Tx FIFO Empty Intr \n",
++					    epnum);
++				write_empty_tx_fifo(pcd, epnum);
++
++				CLEAR_IN_EP_INTR(core_if, epnum, emptyintr);
++
++			}
++
++			/** IN EP BNA Intr */
++			if (diepint.b.bna) {
++				CLEAR_IN_EP_INTR(core_if, epnum, bna);
++				if (core_if->dma_desc_enable) {
++#ifdef DWC_EN_ISOC
++					if (dwc_ep->type ==
++					    DWC_OTG_EP_TYPE_ISOC) {
++						/*
++						 * This checking is performed to prevent first "false" BNA
++						 * handling occuring right after reconnect
++						 */
++						if (dwc_ep->next_frame !=
++						    0xffffffff)
++							dwc_otg_pcd_handle_iso_bna(ep);
++					} else
++#endif				/* DWC_EN_ISOC */
++					{
++						dwc_otg_pcd_handle_noniso_bna(ep);
++					}
++				}
++			}
++			/* NAK Interrutp */
++			if (diepint.b.nak) {
++				DWC_DEBUGPL(DBG_ANY, "EP%d IN NAK Interrupt\n",
++					    epnum);
++				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
++					depctl_data_t depctl;
++					if (ep->dwc_ep.frame_num == 0xFFFFFFFF) {
++						ep->dwc_ep.frame_num = core_if->frame_num;
++						if (ep->dwc_ep.bInterval > 1) {
++							depctl.d32 = 0;
++							depctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[epnum]->diepctl);
++							if (ep->dwc_ep.frame_num & 0x1) {
++								depctl.b.setd1pid = 1;
++								depctl.b.setd0pid = 0;
++							} else {
++								depctl.b.setd0pid = 1;
++								depctl.b.setd1pid = 0;
++							}
++							DWC_WRITE_REG32(&dev_if->in_ep_regs[epnum]->diepctl, depctl.d32);
++						}
++						start_next_request(ep);
++					}
++					ep->dwc_ep.frame_num += ep->dwc_ep.bInterval;
++					if (dwc_ep->frame_num > 0x3FFF)	{
++						dwc_ep->frm_overrun = 1;
++						dwc_ep->frame_num &= 0x3FFF;
++					} else
++						dwc_ep->frm_overrun = 0;
++				}
++
++				CLEAR_IN_EP_INTR(core_if, epnum, nak);
++			}
++		}
++		epnum++;
++		ep_intr >>= 1;
++	}
++
++	return 1;
++#undef CLEAR_IN_EP_INTR
++}
++
++/**
++ * This interrupt indicates that an OUT EP has a pending Interrupt.
++ * The sequence for handling the OUT EP interrupt is shown below:
++ * -#	Read the Device All Endpoint Interrupt register
++ * -#	Repeat the following for each OUT EP interrupt bit set (from
++ *		LSB to MSB).
++ * -#	Read the Device Endpoint Interrupt (DOEPINTn) register
++ * -#	If "Transfer Complete" call the request complete function
++ * -#	If "Endpoint Disabled" complete the EP disable procedure.
++ * -#	If "AHB Error Interrupt" log error
++ * -#	If "Setup Phase Done" process Setup Packet (See Standard USB
++ *		Command Processing)
++ */
++static int32_t dwc_otg_pcd_handle_out_ep_intr(dwc_otg_pcd_t * pcd)
++{
++#define CLEAR_OUT_EP_INTR(__core_if,__epnum,__intr) \
++do { \
++		doepint_data_t doepint = {.d32=0}; \
++		doepint.b.__intr = 1; \
++		DWC_WRITE_REG32(&__core_if->dev_if->out_ep_regs[__epnum]->doepint, \
++		doepint.d32); \
++} while (0)
++
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	uint32_t ep_intr;
++	doepint_data_t doepint = {.d32 = 0 };
++	uint32_t epnum = 0;
++	dwc_otg_pcd_ep_t *ep;
++	dwc_ep_t *dwc_ep;
++	dctl_data_t dctl = {.d32 = 0 };
++	gintmsk_data_t gintmsk = {.d32 = 0 };
++
++
++	DWC_DEBUGPL(DBG_PCDV, "%s()\n", __func__);
++
++	/* Read in the device interrupt bits */
++	ep_intr = dwc_otg_read_dev_all_out_ep_intr(core_if);
++
++	while (ep_intr) {
++		if (ep_intr & 0x1) {
++			/* Get EP pointer */
++			ep = get_out_ep(pcd, epnum);
++			dwc_ep = &ep->dwc_ep;
++
++#ifdef VERBOSE
++			DWC_DEBUGPL(DBG_PCDV,
++				    "EP%d-%s: type=%d, mps=%d\n",
++				    dwc_ep->num, (dwc_ep->is_in ? "IN" : "OUT"),
++				    dwc_ep->type, dwc_ep->maxpacket);
++#endif
++			doepint.d32 =
++			    dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep);
++			/* Moved this interrupt upper due to core deffect of asserting
++			 * OUT EP 0 xfercompl along with stsphsrcvd in BDMA */
++			if (doepint.b.stsphsercvd) {
++				deptsiz0_data_t deptsiz;
++				CLEAR_OUT_EP_INTR(core_if, epnum, stsphsercvd);
++				deptsiz.d32 =
++				    DWC_READ_REG32(&core_if->dev_if->
++						   out_ep_regs[0]->doeptsiz);
++				if (core_if->snpsid >= OTG_CORE_REV_3_00a
++				    && core_if->dma_enable
++				    && core_if->dma_desc_enable == 0
++				    && doepint.b.xfercompl
++				    && deptsiz.b.xfersize == 24) {
++					CLEAR_OUT_EP_INTR(core_if, epnum,
++							  xfercompl);
++					doepint.b.xfercompl = 0;
++					ep0_out_start(core_if, pcd);
++				}
++				if ((core_if->dma_desc_enable) ||
++				    (core_if->dma_enable
++				     && core_if->snpsid >=
++				     OTG_CORE_REV_3_00a)) {
++					do_setup_in_status_phase(pcd);
++				}
++			}
++			/* Transfer complete */
++			if (doepint.b.xfercompl) {
++
++				if (epnum == 0) {
++					/* Clear the bit in DOEPINTn for this interrupt */
++					CLEAR_OUT_EP_INTR(core_if, epnum, xfercompl);
++					if (core_if->snpsid >= OTG_CORE_REV_3_00a) {
++						DWC_DEBUGPL(DBG_PCDV, "DOEPINT=%x doepint=%x\n",
++							DWC_READ_REG32(&core_if->dev_if->out_ep_regs[0]->doepint),
++							doepint.d32);
++						DWC_DEBUGPL(DBG_PCDV, "DOEPCTL=%x \n",
++							DWC_READ_REG32(&core_if->dev_if->out_ep_regs[0]->doepctl));
++
++						if (core_if->snpsid >= OTG_CORE_REV_3_00a
++							&& core_if->dma_enable == 0) {
++							doepint_data_t doepint;
++							doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
++														out_ep_regs[0]->doepint);
++							if (pcd->ep0state == EP0_IDLE && doepint.b.sr) {
++								CLEAR_OUT_EP_INTR(core_if, epnum, sr);
++								goto exit_xfercompl;
++							}
++						}
++						/* In case of DDMA  look at SR bit to go to the Data Stage */
++						if (core_if->dma_desc_enable) {
++							dev_dma_desc_sts_t status = {.d32 = 0};
++							if (pcd->ep0state == EP0_IDLE) {
++								status.d32 = core_if->dev_if->setup_desc_addr[core_if->
++											dev_if->setup_desc_index]->status.d32;
++								if(pcd->data_terminated) {
++									 pcd->data_terminated = 0;
++									 status.d32 = core_if->dev_if->out_desc_addr->status.d32;
++									 dwc_memcpy(&pcd->setup_pkt->req, pcd->backup_buf, 8);
++								}
++								if (status.b.sr) {
++									if (doepint.b.setup) {
++										DWC_DEBUGPL(DBG_PCDV, "DMA DESC EP0_IDLE SR=1 setup=1\n");
++										/* Already started data stage, clear setup */
++										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
++										doepint.b.setup = 0;
++										handle_ep0(pcd);
++										/* Prepare for more setup packets */
++										if (pcd->ep0state == EP0_IN_STATUS_PHASE ||
++											pcd->ep0state == EP0_IN_DATA_PHASE) {
++											ep0_out_start(core_if, pcd);
++										}
++
++										goto exit_xfercompl;
++									} else {
++										/* Prepare for more setup packets */
++										DWC_DEBUGPL(DBG_PCDV,
++											"EP0_IDLE SR=1 setup=0 new setup comes\n");
++										ep0_out_start(core_if, pcd);
++									}
++								}
++							} else {
++								dwc_otg_pcd_request_t *req;
++								dev_dma_desc_sts_t status = {.d32 = 0};
++								diepint_data_t diepint0;
++								diepint0.d32 = DWC_READ_REG32(&core_if->dev_if->
++															in_ep_regs[0]->diepint);
++
++								if (pcd->ep0state == EP0_STALL || pcd->ep0state == EP0_DISCONNECT) {
++									DWC_ERROR("EP0 is stalled/disconnected\n");
++								}
++
++								/* Clear IN xfercompl if set */
++								if (diepint0.b.xfercompl && (pcd->ep0state == EP0_IN_STATUS_PHASE
++									|| pcd->ep0state == EP0_IN_DATA_PHASE)) {
++									DWC_WRITE_REG32(&core_if->dev_if->
++										in_ep_regs[0]->diepint, diepint0.d32);
++								}
++
++								status.d32 = core_if->dev_if->setup_desc_addr[core_if->
++									dev_if->setup_desc_index]->status.d32;
++
++								if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len
++									&& (pcd->ep0state == EP0_OUT_DATA_PHASE))
++									status.d32 = core_if->dev_if->out_desc_addr->status.d32;
++								if (pcd->ep0state == EP0_OUT_STATUS_PHASE)
++									status.d32 = core_if->dev_if->
++									out_desc_addr->status.d32;
++
++								if (status.b.sr) {
++									if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++										DWC_DEBUGPL(DBG_PCDV, "Request queue empty!!\n");
++									} else {
++										DWC_DEBUGPL(DBG_PCDV, "complete req!!\n");
++										req = DWC_CIRCLEQ_FIRST(&ep->queue);
++										if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len &&
++											pcd->ep0state == EP0_OUT_DATA_PHASE) {
++												/* Read arrived setup packet from req->buf */
++												dwc_memcpy(&pcd->setup_pkt->req,
++													req->buf + ep->dwc_ep.xfer_count, 8);
++										}
++										req->actual = ep->dwc_ep.xfer_count;
++										dwc_otg_request_done(ep, req, -ECONNRESET);
++										ep->dwc_ep.start_xfer_buff = 0;
++										ep->dwc_ep.xfer_buff = 0;
++										ep->dwc_ep.xfer_len = 0;
++									}
++									pcd->ep0state = EP0_IDLE;
++									if (doepint.b.setup) {
++										DWC_DEBUGPL(DBG_PCDV, "EP0_IDLE SR=1 setup=1\n");
++										/* Data stage started, clear setup */
++										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
++										doepint.b.setup = 0;
++										handle_ep0(pcd);
++										/* Prepare for setup packets if ep0in was enabled*/
++										if (pcd->ep0state == EP0_IN_STATUS_PHASE) {
++											ep0_out_start(core_if, pcd);
++										}
++
++										goto exit_xfercompl;
++									} else {
++										/* Prepare for more setup packets */
++										DWC_DEBUGPL(DBG_PCDV,
++											"EP0_IDLE SR=1 setup=0 new setup comes 2\n");
++										ep0_out_start(core_if, pcd);
++									}
++								}
++							}
++						}
++						if (core_if->snpsid >= OTG_CORE_REV_2_94a && core_if->dma_enable
++							&& core_if->dma_desc_enable == 0) {
++							doepint_data_t doepint_temp = {.d32 = 0};
++							deptsiz0_data_t doeptsize0 = {.d32 = 0 };
++							doepint_temp.d32 = DWC_READ_REG32(&core_if->dev_if->
++															out_ep_regs[ep->dwc_ep.num]->doepint);
++							doeptsize0.d32 = DWC_READ_REG32(&core_if->dev_if->
++															out_ep_regs[ep->dwc_ep.num]->doeptsiz);
++							if (pcd->ep0state == EP0_IDLE) {
++								if (doepint_temp.b.sr) {
++									CLEAR_OUT_EP_INTR(core_if, epnum, sr);
++								}
++									doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
++																	out_ep_regs[0]->doepint);
++									if (doeptsize0.b.supcnt == 3) {
++										DWC_DEBUGPL(DBG_ANY, "Rolling over!!!!!!!\n");
++										ep->dwc_ep.stp_rollover = 1;
++									}
++									if (doepint.b.setup) {
++retry:
++										/* Already started data stage, clear setup */
++										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
++										doepint.b.setup = 0;
++										handle_ep0(pcd);
++										ep->dwc_ep.stp_rollover = 0;
++										/* Prepare for more setup packets */
++										if (pcd->ep0state == EP0_IN_STATUS_PHASE ||
++											pcd->ep0state == EP0_IN_DATA_PHASE) {
++											ep0_out_start(core_if, pcd);
++										}
++										goto exit_xfercompl;
++									} else {
++										/* Prepare for more setup packets */
++										DWC_DEBUGPL(DBG_ANY,
++											"EP0_IDLE SR=1 setup=0 new setup comes\n");
++										doepint.d32 = DWC_READ_REG32(&core_if->dev_if->
++																	out_ep_regs[0]->doepint);
++										if(doepint.b.setup)
++											goto retry;
++										ep0_out_start(core_if, pcd);
++									}
++							} else {
++								dwc_otg_pcd_request_t *req;
++								diepint_data_t diepint0 = {.d32 = 0};
++								doepint_data_t doepint_temp = {.d32 = 0};
++								depctl_data_t diepctl0;
++								diepint0.d32 = DWC_READ_REG32(&core_if->dev_if->
++																in_ep_regs[0]->diepint);
++								diepctl0.d32 = DWC_READ_REG32(&core_if->dev_if->
++																in_ep_regs[0]->diepctl);
++
++								if (pcd->ep0state == EP0_IN_DATA_PHASE
++									|| pcd->ep0state == EP0_IN_STATUS_PHASE) {
++									if (diepint0.b.xfercompl) {
++										DWC_WRITE_REG32(&core_if->dev_if->
++											in_ep_regs[0]->diepint, diepint0.d32);
++									}
++									if (diepctl0.b.epena) {
++										diepint_data_t diepint = {.d32 = 0};
++										diepctl0.b.snak = 1;
++										DWC_WRITE_REG32(&core_if->dev_if->
++														in_ep_regs[0]->diepctl, diepctl0.d32);
++										do {
++											dwc_udelay(10);
++											diepint.d32 = DWC_READ_REG32(&core_if->dev_if->
++												in_ep_regs[0]->diepint);
++										} while (!diepint.b.inepnakeff);
++										diepint.b.inepnakeff = 1;
++										DWC_WRITE_REG32(&core_if->dev_if->
++											in_ep_regs[0]->diepint, diepint.d32);
++										diepctl0.d32 = 0;
++										diepctl0.b.epdis = 1;
++										DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[0]->diepctl,
++														diepctl0.d32);
++										do {
++											dwc_udelay(10);
++											diepint.d32 = DWC_READ_REG32(&core_if->dev_if->
++												in_ep_regs[0]->diepint);
++										} while (!diepint.b.epdisabled);
++										diepint.b.epdisabled = 1;
++										DWC_WRITE_REG32(&core_if->dev_if->in_ep_regs[0]->diepint,
++															diepint.d32);
++									}
++								}
++								doepint_temp.d32 = DWC_READ_REG32(&core_if->dev_if->
++																out_ep_regs[ep->dwc_ep.num]->doepint);
++								if (doepint_temp.b.sr) {
++									CLEAR_OUT_EP_INTR(core_if, epnum, sr);
++									if (DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++										DWC_DEBUGPL(DBG_PCDV, "Request queue empty!!\n");
++									} else {
++										DWC_DEBUGPL(DBG_PCDV, "complete req!!\n");
++										req = DWC_CIRCLEQ_FIRST(&ep->queue);
++										if (ep->dwc_ep.xfer_count != ep->dwc_ep.total_len &&
++											pcd->ep0state == EP0_OUT_DATA_PHASE) {
++												/* Read arrived setup packet from req->buf */
++												dwc_memcpy(&pcd->setup_pkt->req,
++													req->buf + ep->dwc_ep.xfer_count, 8);
++										}
++										req->actual = ep->dwc_ep.xfer_count;
++										dwc_otg_request_done(ep, req, -ECONNRESET);
++										ep->dwc_ep.start_xfer_buff = 0;
++										ep->dwc_ep.xfer_buff = 0;
++										ep->dwc_ep.xfer_len = 0;
++									}
++									pcd->ep0state = EP0_IDLE;
++									if (doepint.b.setup) {
++										DWC_DEBUGPL(DBG_PCDV, "EP0_IDLE SR=1 setup=1\n");
++										/* Data stage started, clear setup */
++										CLEAR_OUT_EP_INTR(core_if, epnum, setup);
++										doepint.b.setup = 0;
++										handle_ep0(pcd);
++										/* Prepare for setup packets if ep0in was enabled*/
++										if (pcd->ep0state == EP0_IN_STATUS_PHASE) {
++											ep0_out_start(core_if, pcd);
++										}
++										goto exit_xfercompl;
++									} else {
++										/* Prepare for more setup packets */
++										DWC_DEBUGPL(DBG_PCDV,
++											"EP0_IDLE SR=1 setup=0 new setup comes 2\n");
++										ep0_out_start(core_if, pcd);
++									}
++								}
++							}
++						}
++						if (core_if->dma_enable == 0 || pcd->ep0state != EP0_IDLE)
++							handle_ep0(pcd);
++exit_xfercompl:
++						DWC_DEBUGPL(DBG_PCDV, "DOEPINT=%x doepint=%x\n",
++							dwc_otg_read_dev_out_ep_intr(core_if, dwc_ep), doepint.d32);
++					} else {
++					if (core_if->dma_desc_enable == 0
++					    || pcd->ep0state != EP0_IDLE)
++						handle_ep0(pcd);
++					}
++#ifdef DWC_EN_ISOC
++				} else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
++					if (doepint.b.pktdrpsts == 0) {
++						/* Clear the bit in DOEPINTn for this interrupt */
++						CLEAR_OUT_EP_INTR(core_if,
++								  epnum,
++								  xfercompl);
++						complete_iso_ep(pcd, ep);
++					} else {
++
++						doepint_data_t doepint = {.d32 = 0 };
++						doepint.b.xfercompl = 1;
++						doepint.b.pktdrpsts = 1;
++						DWC_WRITE_REG32
++						    (&core_if->dev_if->out_ep_regs
++						     [epnum]->doepint,
++						     doepint.d32);
++						if (handle_iso_out_pkt_dropped
++						    (core_if, dwc_ep)) {
++							complete_iso_ep(pcd,
++									ep);
++						}
++					}
++#endif /* DWC_EN_ISOC */
++#ifdef DWC_UTE_PER_IO
++				} else if (dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
++					CLEAR_OUT_EP_INTR(core_if, epnum, xfercompl);
++					if (!ep->stopped)
++						complete_xiso_ep(ep);
++#endif /* DWC_UTE_PER_IO */
++				} else {
++					/* Clear the bit in DOEPINTn for this interrupt */
++					CLEAR_OUT_EP_INTR(core_if, epnum,
++							  xfercompl);
++
++					if (core_if->core_params->dev_out_nak) {
++						DWC_TIMER_CANCEL(pcd->core_if->ep_xfer_timer[epnum]);
++						pcd->core_if->ep_xfer_info[epnum].state = 0;
++#ifdef DEBUG
++						print_memory_payload(pcd, dwc_ep);
++#endif
++					}
++					complete_ep(ep);
++				}
++
++			}
++
++			/* Endpoint disable      */
++			if (doepint.b.epdisabled) {
++
++				/* Clear the bit in DOEPINTn for this interrupt */
++				CLEAR_OUT_EP_INTR(core_if, epnum, epdisabled);
++				if (core_if->core_params->dev_out_nak) {
++#ifdef DEBUG
++					print_memory_payload(pcd, dwc_ep);
++#endif
++					/* In case of timeout condition */
++					if (core_if->ep_xfer_info[epnum].state == 2) {
++						dctl.d32 = DWC_READ_REG32(&core_if->dev_if->
++										dev_global_regs->dctl);
++						dctl.b.cgoutnak = 1;
++						DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
++																dctl.d32);
++						/* Unmask goutnakeff interrupt which was masked
++						 * during handle nak out interrupt */
++						gintmsk.b.goutnakeff = 1;
++						DWC_MODIFY_REG32(&core_if->core_global_regs->gintmsk,
++																0, gintmsk.d32);
++
++						complete_ep(ep);
++					}
++				}
++				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC)
++				{
++					dctl_data_t dctl;
++					gintmsk_data_t intr_mask = {.d32 = 0};
++					dwc_otg_pcd_request_t *req = 0;
++
++					dctl.d32 = DWC_READ_REG32(&core_if->dev_if->
++						dev_global_regs->dctl);
++					dctl.b.cgoutnak = 1;
++					DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl,
++						dctl.d32);
++
++					intr_mask.d32 = 0;
++					intr_mask.b.incomplisoout = 1;
++
++					/* Get any pending requests */
++					if (!DWC_CIRCLEQ_EMPTY(&ep->queue)) {
++						req = DWC_CIRCLEQ_FIRST(&ep->queue);
++						if (!req) {
++							DWC_PRINTF("complete_ep 0x%p, req = NULL!\n", ep);
++						} else {
++							dwc_otg_request_done(ep, req, 0);
++							start_next_request(ep);
++						}
++					} else {
++						DWC_PRINTF("complete_ep 0x%p, ep->queue empty!\n", ep);
++					}
++				}
++			}
++			/* AHB Error */
++			if (doepint.b.ahberr) {
++				DWC_ERROR("EP%d OUT AHB Error\n", epnum);
++				DWC_ERROR("EP%d DEPDMA=0x%08x \n",
++					  epnum, core_if->dev_if->out_ep_regs[epnum]->doepdma);
++				CLEAR_OUT_EP_INTR(core_if, epnum, ahberr);
++			}
++			/* Setup Phase Done (contorl EPs) */
++			if (doepint.b.setup) {
++#ifdef DEBUG_EP0
++				DWC_DEBUGPL(DBG_PCD, "EP%d SETUP Done\n", epnum);
++#endif
++				CLEAR_OUT_EP_INTR(core_if, epnum, setup);
++
++				handle_ep0(pcd);
++			}
++
++			/** OUT EP BNA Intr */
++			if (doepint.b.bna) {
++				CLEAR_OUT_EP_INTR(core_if, epnum, bna);
++				if (core_if->dma_desc_enable) {
++#ifdef DWC_EN_ISOC
++					if (dwc_ep->type ==
++					    DWC_OTG_EP_TYPE_ISOC) {
++						/*
++						 * This checking is performed to prevent first "false" BNA
++						 * handling occuring right after reconnect
++						 */
++						if (dwc_ep->next_frame !=
++						    0xffffffff)
++							dwc_otg_pcd_handle_iso_bna(ep);
++					} else
++#endif				/* DWC_EN_ISOC */
++					{
++						dwc_otg_pcd_handle_noniso_bna(ep);
++					}
++				}
++			}
++			/* Babble Interrupt */
++			if (doepint.b.babble) {
++				DWC_DEBUGPL(DBG_ANY, "EP%d OUT Babble\n",
++					    epnum);
++				handle_out_ep_babble_intr(pcd, epnum);
++
++				CLEAR_OUT_EP_INTR(core_if, epnum, babble);
++			}
++			if (doepint.b.outtknepdis) {
++				DWC_DEBUGPL(DBG_ANY, "EP%d OUT Token received when EP is \
++					disabled\n",epnum);
++				if (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
++					doepmsk_data_t doepmsk = {.d32 = 0};
++					ep->dwc_ep.frame_num = core_if->frame_num;
++					if (ep->dwc_ep.bInterval > 1) {
++						depctl_data_t depctl;
++						depctl.d32 = DWC_READ_REG32(&core_if->dev_if->
++													out_ep_regs[epnum]->doepctl);
++						if (ep->dwc_ep.frame_num & 0x1) {
++							depctl.b.setd1pid = 1;
++							depctl.b.setd0pid = 0;
++						} else {
++							depctl.b.setd0pid = 1;
++							depctl.b.setd1pid = 0;
++						}
++						DWC_WRITE_REG32(&core_if->dev_if->
++										out_ep_regs[epnum]->doepctl, depctl.d32);
++					}
++					start_next_request(ep);
++					doepmsk.b.outtknepdis = 1;
++					DWC_MODIFY_REG32(&core_if->dev_if->dev_global_regs->doepmsk,
++								 doepmsk.d32, 0);
++				}
++				CLEAR_OUT_EP_INTR(core_if, epnum, outtknepdis);
++			}
++
++			/* NAK Interrutp */
++			if (doepint.b.nak) {
++				DWC_DEBUGPL(DBG_ANY, "EP%d OUT NAK\n", epnum);
++				handle_out_ep_nak_intr(pcd, epnum);
++
++				CLEAR_OUT_EP_INTR(core_if, epnum, nak);
++			}
++			/* NYET Interrutp */
++			if (doepint.b.nyet) {
++				DWC_DEBUGPL(DBG_ANY, "EP%d OUT NYET\n", epnum);
++				handle_out_ep_nyet_intr(pcd, epnum);
++
++				CLEAR_OUT_EP_INTR(core_if, epnum, nyet);
++			}
++		}
++
++		epnum++;
++		ep_intr >>= 1;
++	}
++
++	return 1;
++
++#undef CLEAR_OUT_EP_INTR
++}
++static int drop_transfer(uint32_t trgt_fr, uint32_t curr_fr, uint8_t frm_overrun)
++{
++	int retval = 0;
++	if(!frm_overrun && curr_fr >= trgt_fr)
++		retval = 1;
++	else if (frm_overrun
++		 && (curr_fr >= trgt_fr && ((curr_fr - trgt_fr) < 0x3FFF / 2)))
++		retval = 1;
++	return retval;
++}
++/**
++ * Incomplete ISO IN Transfer Interrupt.
++ * This interrupt indicates one of the following conditions occurred
++ * while transmitting an ISOC transaction.
++ * - Corrupted IN Token for ISOC EP.
++ * - Packet not complete in FIFO.
++ * The follow actions will be taken:
++ *	-#	Determine the EP
++ *	-#	Set incomplete flag in dwc_ep structure
++ *	-#	Disable EP; when "Endpoint Disabled" interrupt is received
++ *		Flush FIFO
++ */
++int32_t dwc_otg_pcd_handle_incomplete_isoc_in_intr(dwc_otg_pcd_t * pcd)
++{
++	gintsts_data_t gintsts;
++
++#ifdef DWC_EN_ISOC
++	dwc_otg_dev_if_t *dev_if;
++	deptsiz_data_t deptsiz = {.d32 = 0 };
++	depctl_data_t depctl = {.d32 = 0 };
++	dsts_data_t dsts = {.d32 = 0 };
++	dwc_ep_t *dwc_ep;
++	int i;
++
++	dev_if = GET_CORE_IF(pcd)->dev_if;
++
++	for (i = 1; i <= dev_if->num_in_eps; ++i) {
++		dwc_ep = &pcd->in_ep[i].dwc_ep;
++		if (dwc_ep->active && dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
++			deptsiz.d32 =
++			    DWC_READ_REG32(&dev_if->in_ep_regs[i]->dieptsiz);
++			depctl.d32 =
++			    DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++
++			if (depctl.b.epdis && deptsiz.d32) {
++				set_current_pkt_info(GET_CORE_IF(pcd), dwc_ep);
++				if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
++					dwc_ep->cur_pkt = 0;
++					dwc_ep->proc_buf_num =
++					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
++
++					if (dwc_ep->proc_buf_num) {
++						dwc_ep->cur_pkt_addr =
++						    dwc_ep->xfer_buff1;
++						dwc_ep->cur_pkt_dma_addr =
++						    dwc_ep->dma_addr1;
++					} else {
++						dwc_ep->cur_pkt_addr =
++						    dwc_ep->xfer_buff0;
++						dwc_ep->cur_pkt_dma_addr =
++						    dwc_ep->dma_addr0;
++					}
++
++				}
++
++				dsts.d32 =
++				    DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
++						   dev_global_regs->dsts);
++				dwc_ep->next_frame = dsts.b.soffn;
++
++				dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF
++								  (pcd),
++								  dwc_ep);
++			}
++		}
++	}
++
++#else
++	depctl_data_t depctl = {.d32 = 0 };
++	dwc_ep_t *dwc_ep;
++	dwc_otg_dev_if_t *dev_if;
++	int i;
++	dev_if = GET_CORE_IF(pcd)->dev_if;
++
++	DWC_DEBUGPL(DBG_PCD,"Incomplete ISO IN \n");
++
++	for (i = 1; i <= dev_if->num_in_eps; ++i) {
++		dwc_ep = &pcd->in_ep[i-1].dwc_ep;
++		depctl.d32 =
++			DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++		if (depctl.b.epena && dwc_ep->type == DWC_OTG_EP_TYPE_ISOC) {
++			if (drop_transfer(dwc_ep->frame_num, GET_CORE_IF(pcd)->frame_num,
++							dwc_ep->frm_overrun))
++			{
++				depctl.d32 =
++					DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++				depctl.b.snak = 1;
++				depctl.b.epdis = 1;
++				DWC_MODIFY_REG32(&dev_if->in_ep_regs[i]->diepctl, depctl.d32, depctl.d32);
++			}
++		}
++	}
++
++	/*intr_mask.b.incomplisoin = 1;
++	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
++			 intr_mask.d32, 0);	 */
++#endif				//DWC_EN_ISOC
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.incomplisoin = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * Incomplete ISO OUT Transfer Interrupt.
++ *
++ * This interrupt indicates that the core has dropped an ISO OUT
++ * packet. The following conditions can be the cause:
++ * - FIFO Full, the entire packet would not fit in the FIFO.
++ * - CRC Error
++ * - Corrupted Token
++ * The follow actions will be taken:
++ *	-#	Determine the EP
++ *	-#	Set incomplete flag in dwc_ep structure
++ *	-#	Read any data from the FIFO
++ *	-#	Disable EP. When "Endpoint Disabled" interrupt is received
++ *		re-enable EP.
++ */
++int32_t dwc_otg_pcd_handle_incomplete_isoc_out_intr(dwc_otg_pcd_t * pcd)
++{
++
++	gintsts_data_t gintsts;
++
++#ifdef DWC_EN_ISOC
++	dwc_otg_dev_if_t *dev_if;
++	deptsiz_data_t deptsiz = {.d32 = 0 };
++	depctl_data_t depctl = {.d32 = 0 };
++	dsts_data_t dsts = {.d32 = 0 };
++	dwc_ep_t *dwc_ep;
++	int i;
++
++	dev_if = GET_CORE_IF(pcd)->dev_if;
++
++	for (i = 1; i <= dev_if->num_out_eps; ++i) {
++		dwc_ep = &pcd->in_ep[i].dwc_ep;
++		if (pcd->out_ep[i].dwc_ep.active &&
++		    pcd->out_ep[i].dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) {
++			deptsiz.d32 =
++			    DWC_READ_REG32(&dev_if->out_ep_regs[i]->doeptsiz);
++			depctl.d32 =
++			    DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
++
++			if (depctl.b.epdis && deptsiz.d32) {
++				set_current_pkt_info(GET_CORE_IF(pcd),
++						     &pcd->out_ep[i].dwc_ep);
++				if (dwc_ep->cur_pkt >= dwc_ep->pkt_cnt) {
++					dwc_ep->cur_pkt = 0;
++					dwc_ep->proc_buf_num =
++					    (dwc_ep->proc_buf_num ^ 1) & 0x1;
++
++					if (dwc_ep->proc_buf_num) {
++						dwc_ep->cur_pkt_addr =
++						    dwc_ep->xfer_buff1;
++						dwc_ep->cur_pkt_dma_addr =
++						    dwc_ep->dma_addr1;
++					} else {
++						dwc_ep->cur_pkt_addr =
++						    dwc_ep->xfer_buff0;
++						dwc_ep->cur_pkt_dma_addr =
++						    dwc_ep->dma_addr0;
++					}
++
++				}
++
++				dsts.d32 =
++				    DWC_READ_REG32(&GET_CORE_IF(pcd)->dev_if->
++						   dev_global_regs->dsts);
++				dwc_ep->next_frame = dsts.b.soffn;
++
++				dwc_otg_iso_ep_start_frm_transfer(GET_CORE_IF
++								  (pcd),
++								  dwc_ep);
++			}
++		}
++	}
++#else
++	/** @todo implement ISR */
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	dwc_otg_core_if_t *core_if;
++	deptsiz_data_t deptsiz = {.d32 = 0 };
++	depctl_data_t depctl = {.d32 = 0 };
++	dctl_data_t dctl = {.d32 = 0 };
++	dwc_ep_t *dwc_ep = NULL;
++	int i;
++	core_if = GET_CORE_IF(pcd);
++
++	for (i = 0; i < core_if->dev_if->num_out_eps; ++i) {
++		dwc_ep = &pcd->out_ep[i].dwc_ep;
++		depctl.d32 =
++			DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl);
++		if (depctl.b.epena && depctl.b.dpid == (core_if->frame_num & 0x1)) {
++			core_if->dev_if->isoc_ep = dwc_ep;
++			deptsiz.d32 =
++					DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doeptsiz);
++				break;
++		}
++	}
++	dctl.d32 = DWC_READ_REG32(&core_if->dev_if->dev_global_regs->dctl);
++	gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
++	intr_mask.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
++
++	if (!intr_mask.b.goutnakeff) {
++		/* Unmask it */
++		intr_mask.b.goutnakeff = 1;
++		DWC_WRITE_REG32(&core_if->core_global_regs->gintmsk, intr_mask.d32);
++	}
++	if (!gintsts.b.goutnakeff) {
++		dctl.b.sgoutnak = 1;
++	}
++	DWC_WRITE_REG32(&core_if->dev_if->dev_global_regs->dctl, dctl.d32);
++
++	depctl.d32 = DWC_READ_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl);
++	if (depctl.b.epena) {
++		depctl.b.epdis = 1;
++		depctl.b.snak = 1;
++	}
++	DWC_WRITE_REG32(&core_if->dev_if->out_ep_regs[dwc_ep->num]->doepctl, depctl.d32);
++
++	intr_mask.d32 = 0;
++	intr_mask.b.incomplisoout = 1;
++
++#endif /* DWC_EN_ISOC */
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.incomplisoout = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * This function handles the Global IN NAK Effective interrupt.
++ *
++ */
++int32_t dwc_otg_pcd_handle_in_nak_effective(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
++	depctl_data_t diepctl = {.d32 = 0 };
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	gintsts_data_t gintsts;
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++	int i;
++
++	DWC_DEBUGPL(DBG_PCD, "Global IN NAK Effective\n");
++
++	/* Disable all active IN EPs */
++	for (i = 0; i <= dev_if->num_in_eps; i++) {
++		diepctl.d32 = DWC_READ_REG32(&dev_if->in_ep_regs[i]->diepctl);
++		if (!(diepctl.b.eptype & 1) && diepctl.b.epena) {
++			if (core_if->start_predict > 0)
++				core_if->start_predict++;
++			diepctl.b.epdis = 1;
++			diepctl.b.snak = 1;
++			DWC_WRITE_REG32(&dev_if->in_ep_regs[i]->diepctl, diepctl.d32);
++		}
++	}
++
++
++	/* Disable the Global IN NAK Effective Interrupt */
++	intr_mask.b.ginnakeff = 1;
++	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
++			 intr_mask.d32, 0);
++
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.ginnakeff = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * OUT NAK Effective.
++ *
++ */
++int32_t dwc_otg_pcd_handle_out_nak_effective(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_dev_if_t *dev_if = GET_CORE_IF(pcd)->dev_if;
++	gintmsk_data_t intr_mask = {.d32 = 0 };
++	gintsts_data_t gintsts;
++	depctl_data_t doepctl;
++	int i;
++
++	/* Disable the Global OUT NAK Effective Interrupt */
++	intr_mask.b.goutnakeff = 1;
++	DWC_MODIFY_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintmsk,
++		intr_mask.d32, 0);
++
++	/* If DEV OUT NAK enabled*/
++	if (pcd->core_if->core_params->dev_out_nak) {
++		/* Run over all out endpoints to determine the ep number on
++		 * which the timeout has happened
++		 */
++		for (i = 0; i <= dev_if->num_out_eps; i++) {
++			if ( pcd->core_if->ep_xfer_info[i].state == 2 )
++				break;
++		}
++		if (i > dev_if->num_out_eps) {
++			dctl_data_t dctl;
++			dctl.d32 =
++			    DWC_READ_REG32(&dev_if->dev_global_regs->dctl);
++			dctl.b.cgoutnak = 1;
++			DWC_WRITE_REG32(&dev_if->dev_global_regs->dctl,
++				dctl.d32);
++			goto out;
++		}
++
++		/* Disable the endpoint */
++		doepctl.d32 = DWC_READ_REG32(&dev_if->out_ep_regs[i]->doepctl);
++		if (doepctl.b.epena) {
++			doepctl.b.epdis = 1;
++			doepctl.b.snak = 1;
++		}
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[i]->doepctl, doepctl.d32);
++		return 1;
++	}
++	/* We come here from Incomplete ISO OUT handler */
++	if (dev_if->isoc_ep) {
++		dwc_ep_t *dwc_ep = (dwc_ep_t *)dev_if->isoc_ep;
++		uint32_t epnum = dwc_ep->num;
++		doepint_data_t doepint;
++		doepint.d32 =
++		    DWC_READ_REG32(&dev_if->out_ep_regs[dwc_ep->num]->doepint);
++		dev_if->isoc_ep = NULL;
++		doepctl.d32 =
++		    DWC_READ_REG32(&dev_if->out_ep_regs[epnum]->doepctl);
++		DWC_PRINTF("Before disable DOEPCTL = %08x\n", doepctl.d32);
++		if (doepctl.b.epena) {
++			doepctl.b.epdis = 1;
++			doepctl.b.snak = 1;
++		}
++		DWC_WRITE_REG32(&dev_if->out_ep_regs[epnum]->doepctl,
++				doepctl.d32);
++		return 1;
++	} else
++		DWC_PRINTF("INTERRUPT Handler not implemented for %s\n",
++			   "Global OUT NAK Effective\n");
++
++out:
++	/* Clear interrupt */
++	gintsts.d32 = 0;
++	gintsts.b.goutnakeff = 1;
++	DWC_WRITE_REG32(&GET_CORE_IF(pcd)->core_global_regs->gintsts,
++			gintsts.d32);
++
++	return 1;
++}
++
++/**
++ * PCD interrupt handler.
++ *
++ * The PCD handles the device interrupts.  Many conditions can cause a
++ * device interrupt. When an interrupt occurs, the device interrupt
++ * service routine determines the cause of the interrupt and
++ * dispatches handling to the appropriate function. These interrupt
++ * handling functions are described below.
++ *
++ * All interrupt registers are processed from LSB to MSB.
++ *
++ */
++int32_t dwc_otg_pcd_handle_intr(dwc_otg_pcd_t * pcd)
++{
++	dwc_otg_core_if_t *core_if = GET_CORE_IF(pcd);
++#ifdef VERBOSE
++	dwc_otg_core_global_regs_t *global_regs = core_if->core_global_regs;
++#endif
++	gintsts_data_t gintr_status;
++	int32_t retval = 0;
++
++	/* Exit from ISR if core is hibernated */
++	if (core_if->hibernation_suspend == 1) {
++		return retval;
++	}
++#ifdef VERBOSE
++	DWC_DEBUGPL(DBG_ANY, "%s() gintsts=%08x	 gintmsk=%08x\n",
++		    __func__,
++		    DWC_READ_REG32(&global_regs->gintsts),
++		    DWC_READ_REG32(&global_regs->gintmsk));
++#endif
++
++	if (dwc_otg_is_device_mode(core_if)) {
++		DWC_SPINLOCK(pcd->lock);
++#ifdef VERBOSE
++		DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%08x  gintmsk=%08x\n",
++			    __func__,
++			    DWC_READ_REG32(&global_regs->gintsts),
++			    DWC_READ_REG32(&global_regs->gintmsk));
++#endif
++
++		gintr_status.d32 = dwc_otg_read_core_intr(core_if);
++
++		DWC_DEBUGPL(DBG_PCDV, "%s: gintsts&gintmsk=%08x\n",
++			    __func__, gintr_status.d32);
++
++		if (gintr_status.b.sofintr) {
++			retval |= dwc_otg_pcd_handle_sof_intr(pcd);
++		}
++		if (gintr_status.b.rxstsqlvl) {
++			retval |=
++			    dwc_otg_pcd_handle_rx_status_q_level_intr(pcd);
++		}
++		if (gintr_status.b.nptxfempty) {
++			retval |= dwc_otg_pcd_handle_np_tx_fifo_empty_intr(pcd);
++		}
++		if (gintr_status.b.goutnakeff) {
++			retval |= dwc_otg_pcd_handle_out_nak_effective(pcd);
++		}
++		if (gintr_status.b.i2cintr) {
++			retval |= dwc_otg_pcd_handle_i2c_intr(pcd);
++		}
++		if (gintr_status.b.erlysuspend) {
++			retval |= dwc_otg_pcd_handle_early_suspend_intr(pcd);
++		}
++		if (gintr_status.b.usbreset) {
++			retval |= dwc_otg_pcd_handle_usb_reset_intr(pcd);
++		}
++		if (gintr_status.b.enumdone) {
++			retval |= dwc_otg_pcd_handle_enum_done_intr(pcd);
++		}
++		if (gintr_status.b.isooutdrop) {
++			retval |=
++			    dwc_otg_pcd_handle_isoc_out_packet_dropped_intr
++			    (pcd);
++		}
++		if (gintr_status.b.eopframe) {
++			retval |=
++			    dwc_otg_pcd_handle_end_periodic_frame_intr(pcd);
++		}
++		if (gintr_status.b.inepint) {
++			if (!core_if->multiproc_int_enable) {
++				retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
++			}
++		}
++		if (gintr_status.b.outepintr) {
++			if (!core_if->multiproc_int_enable) {
++				retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
++			}
++		}
++		if (gintr_status.b.epmismatch) {
++			retval |= dwc_otg_pcd_handle_ep_mismatch_intr(pcd);
++		}
++		if (gintr_status.b.fetsusp) {
++			retval |= dwc_otg_pcd_handle_ep_fetsusp_intr(pcd);
++		}
++		if (gintr_status.b.ginnakeff) {
++			retval |= dwc_otg_pcd_handle_in_nak_effective(pcd);
++		}
++		if (gintr_status.b.incomplisoin) {
++			retval |=
++			    dwc_otg_pcd_handle_incomplete_isoc_in_intr(pcd);
++		}
++		if (gintr_status.b.incomplisoout) {
++			retval |=
++			    dwc_otg_pcd_handle_incomplete_isoc_out_intr(pcd);
++		}
++
++		/* In MPI mode Device Endpoints interrupts are asserted
++		 * without setting outepintr and inepint bits set, so these
++		 * Interrupt handlers are called without checking these bit-fields
++		 */
++		if (core_if->multiproc_int_enable) {
++			retval |= dwc_otg_pcd_handle_in_ep_intr(pcd);
++			retval |= dwc_otg_pcd_handle_out_ep_intr(pcd);
++		}
++#ifdef VERBOSE
++		DWC_DEBUGPL(DBG_PCDV, "%s() gintsts=%0x\n", __func__,
++			    DWC_READ_REG32(&global_regs->gintsts));
++#endif
++		DWC_SPINUNLOCK(pcd->lock);
++	}
++	return retval;
++}
++
++#endif /* DWC_HOST_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd_linux.c
+@@ -0,0 +1,1262 @@
++ /* ==========================================================================
++  * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd_linux.c $
++  * $Revision: #21 $
++  * $Date: 2012/08/10 $
++  * $Change: 2047372 $
++  *
++  * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++  * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++  * otherwise expressly agreed to in writing between Synopsys and you.
++  *
++  * The Software IS NOT an item of Licensed Software or Licensed Product under
++  * any End User Software License Agreement or Agreement for Licensed Product
++  * with Synopsys or any supplement thereto. You are permitted to use and
++  * redistribute this Software in source and binary forms, with or without
++  * modification, provided that redistributions of source code must retain this
++  * notice. You may not view, use, disclose, copy or distribute this file or
++  * any information contained herein except pursuant to this license grant from
++  * Synopsys. If you do not agree with this notice, including the disclaimer
++  * below, then you are not authorized to use the Software.
++  *
++  * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++  * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++  * DAMAGE.
++  * ========================================================================== */
++#ifndef DWC_HOST_ONLY
++
++/** @file
++ * This file implements the Peripheral Controller Driver.
++ *
++ * The Peripheral Controller Driver (PCD) is responsible for
++ * translating requests from the Function Driver into the appropriate
++ * actions on the DWC_otg controller. It isolates the Function Driver
++ * from the specifics of the controller by providing an API to the
++ * Function Driver.
++ *
++ * The Peripheral Controller Driver for Linux will implement the
++ * Gadget API, so that the existing Gadget drivers can be used.
++ * (Gadget Driver is the Linux terminology for a Function Driver.)
++ *
++ * The Linux Gadget API is defined in the header file
++ * <code><linux/usb_gadget.h></code>.  The USB EP operations API is
++ * defined in the structure <code>usb_ep_ops</code> and the USB
++ * Controller API is defined in the structure
++ * <code>usb_gadget_ops</code>.
++ *
++ */
++
++#include "dwc_otg_os_dep.h"
++#include "dwc_otg_pcd_if.h"
++#include "dwc_otg_pcd.h"
++#include "dwc_otg_driver.h"
++#include "dwc_otg_dbg.h"
++
++extern bool fiq_enable;
++
++static struct gadget_wrapper {
++	dwc_otg_pcd_t *pcd;
++
++	struct usb_gadget gadget;
++	struct usb_gadget_driver *driver;
++
++	struct usb_ep ep0;
++	struct usb_ep in_ep[16];
++	struct usb_ep out_ep[16];
++
++} *gadget_wrapper;
++
++/* Display the contents of the buffer */
++extern void dump_msg(const u8 * buf, unsigned int length);
++/**
++ * Get the dwc_otg_pcd_ep_t* from usb_ep* pointer - NULL in case
++ * if the endpoint is not found
++ */
++static struct dwc_otg_pcd_ep *ep_from_handle(dwc_otg_pcd_t * pcd, void *handle)
++{
++	int i;
++	if (pcd->ep0.priv == handle) {
++		return &pcd->ep0;
++	}
++
++	for (i = 0; i < MAX_EPS_CHANNELS - 1; i++) {
++		if (pcd->in_ep[i].priv == handle)
++			return &pcd->in_ep[i];
++		if (pcd->out_ep[i].priv == handle)
++			return &pcd->out_ep[i];
++	}
++
++	return NULL;
++}
++
++/* USB Endpoint Operations */
++/*
++ * The following sections briefly describe the behavior of the Gadget
++ * API endpoint operations implemented in the DWC_otg driver
++ * software. Detailed descriptions of the generic behavior of each of
++ * these functions can be found in the Linux header file
++ * include/linux/usb_gadget.h.
++ *
++ * The Gadget API provides wrapper functions for each of the function
++ * pointers defined in usb_ep_ops. The Gadget Driver calls the wrapper
++ * function, which then calls the underlying PCD function. The
++ * following sections are named according to the wrapper
++ * functions. Within each section, the corresponding DWC_otg PCD
++ * function name is specified.
++ *
++ */
++
++/**
++ * This function is called by the Gadget Driver for each EP to be
++ * configured for the current configuration (SET_CONFIGURATION).
++ *
++ * This function initializes the dwc_otg_ep_t data structure, and then
++ * calls dwc_otg_ep_activate.
++ */
++static int ep_enable(struct usb_ep *usb_ep,
++		     const struct usb_endpoint_descriptor *ep_desc)
++{
++	int retval;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, ep_desc);
++
++	if (!usb_ep || !ep_desc || ep_desc->bDescriptorType != USB_DT_ENDPOINT) {
++		DWC_WARN("%s, bad ep or descriptor\n", __func__);
++		return -EINVAL;
++	}
++	if (usb_ep == &gadget_wrapper->ep0) {
++		DWC_WARN("%s, bad ep(0)\n", __func__);
++		return -EINVAL;
++	}
++
++	/* Check FIFO size? */
++	if (!ep_desc->wMaxPacketSize) {
++		DWC_WARN("%s, bad %s maxpacket\n", __func__, usb_ep->name);
++		return -ERANGE;
++	}
++
++	if (!gadget_wrapper->driver ||
++	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
++		DWC_WARN("%s, bogus device state\n", __func__);
++		return -ESHUTDOWN;
++	}
++
++	/* Delete after check - MAS */
++#if 0
++	nat = (uint32_t) ep_desc->wMaxPacketSize;
++	printk(KERN_ALERT "%s: nat (before) =%d\n", __func__, nat);
++	nat = (nat >> 11) & 0x03;
++	printk(KERN_ALERT "%s: nat (after) =%d\n", __func__, nat);
++#endif
++	retval = dwc_otg_pcd_ep_enable(gadget_wrapper->pcd,
++				       (const uint8_t *)ep_desc,
++				       (void *)usb_ep);
++	if (retval) {
++		DWC_WARN("dwc_otg_pcd_ep_enable failed\n");
++		return -EINVAL;
++	}
++
++	usb_ep->maxpacket = le16_to_cpu(ep_desc->wMaxPacketSize);
++
++	return 0;
++}
++
++/**
++ * This function is called when an EP is disabled due to disconnect or
++ * change in configuration. Any pending requests will terminate with a
++ * status of -ESHUTDOWN.
++ *
++ * This function modifies the dwc_otg_ep_t data structure for this EP,
++ * and then calls dwc_otg_ep_deactivate.
++ */
++static int ep_disable(struct usb_ep *usb_ep)
++{
++	int retval;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, usb_ep);
++	if (!usb_ep) {
++		DWC_DEBUGPL(DBG_PCD, "%s, %s not enabled\n", __func__,
++			    usb_ep ? usb_ep->name : NULL);
++		return -EINVAL;
++	}
++
++	retval = dwc_otg_pcd_ep_disable(gadget_wrapper->pcd, usb_ep);
++	if (retval) {
++		retval = -EINVAL;
++	}
++
++	return retval;
++}
++
++/**
++ * This function allocates a request object to use with the specified
++ * endpoint.
++ *
++ * @param ep The endpoint to be used with with the request
++ * @param gfp_flags the GFP_* flags to use.
++ */
++static struct usb_request *dwc_otg_pcd_alloc_request(struct usb_ep *ep,
++						     gfp_t gfp_flags)
++{
++	struct usb_request *usb_req;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d)\n", __func__, ep, gfp_flags);
++	if (0 == ep) {
++		DWC_WARN("%s() %s\n", __func__, "Invalid EP!\n");
++		return 0;
++	}
++	usb_req = kzalloc(sizeof(*usb_req), gfp_flags);
++	if (0 == usb_req) {
++		DWC_WARN("%s() %s\n", __func__, "request allocation failed!\n");
++		return 0;
++	}
++	usb_req->dma = DWC_DMA_ADDR_INVALID;
++
++	return usb_req;
++}
++
++/**
++ * This function frees a request object.
++ *
++ * @param ep The endpoint associated with the request
++ * @param req The request being freed
++ */
++static void dwc_otg_pcd_free_request(struct usb_ep *ep, struct usb_request *req)
++{
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, ep, req);
++
++	if (0 == ep || 0 == req) {
++		DWC_WARN("%s() %s\n", __func__,
++			 "Invalid ep or req argument!\n");
++		return;
++	}
++
++	kfree(req);
++}
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++/**
++ * This function allocates an I/O buffer to be used for a transfer
++ * to/from the specified endpoint.
++ *
++ * @param usb_ep The endpoint to be used with with the request
++ * @param bytes The desired number of bytes for the buffer
++ * @param dma Pointer to the buffer's DMA address; must be valid
++ * @param gfp_flags the GFP_* flags to use.
++ * @return address of a new buffer or null is buffer could not be allocated.
++ */
++static void *dwc_otg_pcd_alloc_buffer(struct usb_ep *usb_ep, unsigned bytes,
++				      dma_addr_t * dma, gfp_t gfp_flags)
++{
++	void *buf;
++	dwc_otg_pcd_t *pcd = 0;
++
++	pcd = gadget_wrapper->pcd;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%d,%p,%0x)\n", __func__, usb_ep, bytes,
++		    dma, gfp_flags);
++
++	/* Check dword alignment */
++	if ((bytes & 0x3UL) != 0) {
++		DWC_WARN("%s() Buffer size is not a multiple of"
++			 "DWORD size (%d)", __func__, bytes);
++	}
++
++	buf = dma_alloc_coherent(NULL, bytes, dma, gfp_flags);
++	WARN_ON(!buf);
++
++	/* Check dword alignment */
++	if (((int)buf & 0x3UL) != 0) {
++		DWC_WARN("%s() Buffer is not DWORD aligned (%p)",
++			 __func__, buf);
++	}
++
++	return buf;
++}
++
++/**
++ * This function frees an I/O buffer that was allocated by alloc_buffer.
++ *
++ * @param usb_ep the endpoint associated with the buffer
++ * @param buf address of the buffer
++ * @param dma The buffer's DMA address
++ * @param bytes The number of bytes of the buffer
++ */
++static void dwc_otg_pcd_free_buffer(struct usb_ep *usb_ep, void *buf,
++				    dma_addr_t dma, unsigned bytes)
++{
++	dwc_otg_pcd_t *pcd = 0;
++
++	pcd = gadget_wrapper->pcd;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%0x,%d)\n", __func__, buf, dma, bytes);
++
++	dma_free_coherent(NULL, bytes, buf, dma);
++}
++#endif
++
++/**
++ * This function is used to submit an I/O Request to an EP.
++ *
++ *	- When the request completes the request's completion callback
++ *	  is called to return the request to the driver.
++ *	- An EP, except control EPs, may have multiple requests
++ *	  pending.
++ *	- Once submitted the request cannot be examined or modified.
++ *	- Each request is turned into one or more packets.
++ *	- A BULK EP can queue any amount of data; the transfer is
++ *	  packetized.
++ *	- Zero length Packets are specified with the request 'zero'
++ *	  flag.
++ */
++static int ep_queue(struct usb_ep *usb_ep, struct usb_request *usb_req,
++		    gfp_t gfp_flags)
++{
++	dwc_otg_pcd_t *pcd;
++	struct dwc_otg_pcd_ep *ep = NULL;
++	int retval = 0, is_isoc_ep = 0;
++	dma_addr_t dma_addr = DWC_DMA_ADDR_INVALID;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p,%d)\n",
++		    __func__, usb_ep, usb_req, gfp_flags);
++
++	if (!usb_req || !usb_req->complete || !usb_req->buf) {
++		DWC_WARN("bad params\n");
++		return -EINVAL;
++	}
++
++	if (!usb_ep) {
++		DWC_WARN("bad ep\n");
++		return -EINVAL;
++	}
++
++	pcd = gadget_wrapper->pcd;
++	if (!gadget_wrapper->driver ||
++	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
++		DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
++			    gadget_wrapper->gadget.speed);
++		DWC_WARN("bogus device state\n");
++		return -ESHUTDOWN;
++	}
++
++	DWC_DEBUGPL(DBG_PCD, "%s queue req %p, len %d buf %p\n",
++		    usb_ep->name, usb_req, usb_req->length, usb_req->buf);
++
++	usb_req->status = -EINPROGRESS;
++	usb_req->actual = 0;
++
++	ep = ep_from_handle(pcd, usb_ep);
++	if (ep == NULL)
++		is_isoc_ep = 0;
++	else
++		is_isoc_ep = (ep->dwc_ep.type == DWC_OTG_EP_TYPE_ISOC) ? 1 : 0;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++	dma_addr = usb_req->dma;
++#else
++	if (GET_CORE_IF(pcd)->dma_enable) {
++                dwc_otg_device_t *otg_dev = gadget_wrapper->pcd->otg_dev;
++                struct device *dev = NULL;
++
++                if (otg_dev != NULL)
++                        dev = DWC_OTG_OS_GETDEV(otg_dev->os_dep);
++
++		if (usb_req->length != 0 &&
++                    usb_req->dma == DWC_DMA_ADDR_INVALID) {
++                        dma_addr = dma_map_single(dev, usb_req->buf,
++                                                  usb_req->length,
++                                                  ep->dwc_ep.is_in ?
++                                                        DMA_TO_DEVICE:
++                                                        DMA_FROM_DEVICE);
++		}
++	}
++#endif
++
++#ifdef DWC_UTE_PER_IO
++	if (is_isoc_ep == 1) {
++		retval = dwc_otg_pcd_xiso_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
++			usb_req->length, usb_req->zero, usb_req,
++			gfp_flags == GFP_ATOMIC ? 1 : 0, &usb_req->ext_req);
++		if (retval)
++			return -EINVAL;
++
++		return 0;
++	}
++#endif
++	retval = dwc_otg_pcd_ep_queue(pcd, usb_ep, usb_req->buf, dma_addr,
++				      usb_req->length, usb_req->zero, usb_req,
++				      gfp_flags == GFP_ATOMIC ? 1 : 0);
++	if (retval) {
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * This function cancels an I/O request from an EP.
++ */
++static int ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req)
++{
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p,%p)\n", __func__, usb_ep, usb_req);
++
++	if (!usb_ep || !usb_req) {
++		DWC_WARN("bad argument\n");
++		return -EINVAL;
++	}
++	if (!gadget_wrapper->driver ||
++	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
++		DWC_WARN("bogus device state\n");
++		return -ESHUTDOWN;
++	}
++	if (dwc_otg_pcd_ep_dequeue(gadget_wrapper->pcd, usb_ep, usb_req)) {
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * usb_ep_set_halt stalls an endpoint.
++ *
++ * usb_ep_clear_halt clears an endpoint halt and resets its data
++ * toggle.
++ *
++ * Both of these functions are implemented with the same underlying
++ * function. The behavior depends on the value argument.
++ *
++ * @param[in] usb_ep the Endpoint to halt or clear halt.
++ * @param[in] value
++ *	- 0 means clear_halt.
++ *	- 1 means set_halt,
++ *	- 2 means clear stall lock flag.
++ *	- 3 means set  stall lock flag.
++ */
++static int ep_halt(struct usb_ep *usb_ep, int value)
++{
++	int retval = 0;
++
++	DWC_DEBUGPL(DBG_PCD, "HALT %s %d\n", usb_ep->name, value);
++
++	if (!usb_ep) {
++		DWC_WARN("bad ep\n");
++		return -EINVAL;
++	}
++
++	retval = dwc_otg_pcd_ep_halt(gadget_wrapper->pcd, usb_ep, value);
++	if (retval == -DWC_E_AGAIN) {
++		return -EAGAIN;
++	} else if (retval) {
++		retval = -EINVAL;
++	}
++
++	return retval;
++}
++
++//#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30))
++#if 0
++/**
++ * ep_wedge: sets the halt feature and ignores clear requests
++ *
++ * @usb_ep: the endpoint being wedged
++ *
++ * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
++ * requests. If the gadget driver clears the halt status, it will
++ * automatically unwedge the endpoint.
++ *
++ * Returns zero on success, else negative errno. *
++ * Check usb_ep_set_wedge() at "usb_gadget.h" for details
++ */
++static int ep_wedge(struct usb_ep *usb_ep)
++{
++	int retval = 0;
++
++	DWC_DEBUGPL(DBG_PCD, "WEDGE %s\n", usb_ep->name);
++
++	if (!usb_ep) {
++		DWC_WARN("bad ep\n");
++		return -EINVAL;
++	}
++
++	retval = dwc_otg_pcd_ep_wedge(gadget_wrapper->pcd, usb_ep);
++	if (retval == -DWC_E_AGAIN) {
++		retval = -EAGAIN;
++	} else if (retval) {
++		retval = -EINVAL;
++	}
++
++	return retval;
++}
++#endif
++
++#ifdef DWC_EN_ISOC
++/**
++ * This function is used to submit an ISOC Transfer Request to an EP.
++ *
++ *	- Every time a sync period completes the request's completion callback
++ *	  is called to provide data to the gadget driver.
++ *	- Once submitted the request cannot be modified.
++ *	- Each request is turned into periodic data packets untill ISO
++ *	  Transfer is stopped..
++ */
++static int iso_ep_start(struct usb_ep *usb_ep, struct usb_iso_request *req,
++			gfp_t gfp_flags)
++{
++	int retval = 0;
++
++	if (!req || !req->process_buffer || !req->buf0 || !req->buf1) {
++		DWC_WARN("bad params\n");
++		return -EINVAL;
++	}
++
++	if (!usb_ep) {
++		DWC_PRINTF("bad params\n");
++		return -EINVAL;
++	}
++
++	req->status = -EINPROGRESS;
++
++	retval =
++	    dwc_otg_pcd_iso_ep_start(gadget_wrapper->pcd, usb_ep, req->buf0,
++				     req->buf1, req->dma0, req->dma1,
++				     req->sync_frame, req->data_pattern_frame,
++				     req->data_per_frame,
++				     req->
++				     flags & USB_REQ_ISO_ASAP ? -1 :
++				     req->start_frame, req->buf_proc_intrvl,
++				     req, gfp_flags == GFP_ATOMIC ? 1 : 0);
++
++	if (retval) {
++		return -EINVAL;
++	}
++
++	return retval;
++}
++
++/**
++ * This function stops ISO EP Periodic Data Transfer.
++ */
++static int iso_ep_stop(struct usb_ep *usb_ep, struct usb_iso_request *req)
++{
++	int retval = 0;
++	if (!usb_ep) {
++		DWC_WARN("bad ep\n");
++	}
++
++	if (!gadget_wrapper->driver ||
++	    gadget_wrapper->gadget.speed == USB_SPEED_UNKNOWN) {
++		DWC_DEBUGPL(DBG_PCDV, "gadget.speed=%d\n",
++			    gadget_wrapper->gadget.speed);
++		DWC_WARN("bogus device state\n");
++	}
++
++	dwc_otg_pcd_iso_ep_stop(gadget_wrapper->pcd, usb_ep, req);
++	if (retval) {
++		retval = -EINVAL;
++	}
++
++	return retval;
++}
++
++static struct usb_iso_request *alloc_iso_request(struct usb_ep *ep,
++						 int packets, gfp_t gfp_flags)
++{
++	struct usb_iso_request *pReq = NULL;
++	uint32_t req_size;
++
++	req_size = sizeof(struct usb_iso_request);
++	req_size +=
++	    (2 * packets * (sizeof(struct usb_gadget_iso_packet_descriptor)));
++
++	pReq = kmalloc(req_size, gfp_flags);
++	if (!pReq) {
++		DWC_WARN("Can't allocate Iso Request\n");
++		return 0;
++	}
++	pReq->iso_packet_desc0 = (void *)(pReq + 1);
++
++	pReq->iso_packet_desc1 = pReq->iso_packet_desc0 + packets;
++
++	return pReq;
++}
++
++static void free_iso_request(struct usb_ep *ep, struct usb_iso_request *req)
++{
++	kfree(req);
++}
++
++static struct usb_isoc_ep_ops dwc_otg_pcd_ep_ops = {
++	.ep_ops = {
++		   .enable = ep_enable,
++		   .disable = ep_disable,
++
++		   .alloc_request = dwc_otg_pcd_alloc_request,
++		   .free_request = dwc_otg_pcd_free_request,
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++		   .alloc_buffer = dwc_otg_pcd_alloc_buffer,
++		   .free_buffer = dwc_otg_pcd_free_buffer,
++#endif
++
++		   .queue = ep_queue,
++		   .dequeue = ep_dequeue,
++
++		   .set_halt = ep_halt,
++		   .fifo_status = 0,
++		   .fifo_flush = 0,
++		   },
++	.iso_ep_start = iso_ep_start,
++	.iso_ep_stop = iso_ep_stop,
++	.alloc_iso_request = alloc_iso_request,
++	.free_iso_request = free_iso_request,
++};
++
++#else
++
++	int (*enable) (struct usb_ep *ep,
++		const struct usb_endpoint_descriptor *desc);
++	int (*disable) (struct usb_ep *ep);
++
++	struct usb_request *(*alloc_request) (struct usb_ep *ep,
++		gfp_t gfp_flags);
++	void (*free_request) (struct usb_ep *ep, struct usb_request *req);
++
++	int (*queue) (struct usb_ep *ep, struct usb_request *req,
++		gfp_t gfp_flags);
++	int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
++
++	int (*set_halt) (struct usb_ep *ep, int value);
++	int (*set_wedge) (struct usb_ep *ep);
++
++	int (*fifo_status) (struct usb_ep *ep);
++	void (*fifo_flush) (struct usb_ep *ep);
++static struct usb_ep_ops dwc_otg_pcd_ep_ops = {
++	.enable = ep_enable,
++	.disable = ep_disable,
++
++	.alloc_request = dwc_otg_pcd_alloc_request,
++	.free_request = dwc_otg_pcd_free_request,
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
++	.alloc_buffer = dwc_otg_pcd_alloc_buffer,
++	.free_buffer = dwc_otg_pcd_free_buffer,
++#else
++	/* .set_wedge = ep_wedge, */
++        .set_wedge = NULL, /* uses set_halt instead */
++#endif
++
++	.queue = ep_queue,
++	.dequeue = ep_dequeue,
++
++	.set_halt = ep_halt,
++	.fifo_status = 0,
++	.fifo_flush = 0,
++
++};
++
++#endif /* _EN_ISOC_ */
++/*	Gadget Operations */
++/**
++ * The following gadget operations will be implemented in the DWC_otg
++ * PCD. Functions in the API that are not described below are not
++ * implemented.
++ *
++ * The Gadget API provides wrapper functions for each of the function
++ * pointers defined in usb_gadget_ops. The Gadget Driver calls the
++ * wrapper function, which then calls the underlying PCD function. The
++ * following sections are named according to the wrapper functions
++ * (except for ioctl, which doesn't have a wrapper function). Within
++ * each section, the corresponding DWC_otg PCD function name is
++ * specified.
++ *
++ */
++
++/**
++ *Gets the USB Frame number of the last SOF.
++ */
++static int get_frame_number(struct usb_gadget *gadget)
++{
++	struct gadget_wrapper *d;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
++
++	if (gadget == 0) {
++		return -ENODEV;
++	}
++
++	d = container_of(gadget, struct gadget_wrapper, gadget);
++	return dwc_otg_pcd_get_frame_number(d->pcd);
++}
++
++#ifdef CONFIG_USB_DWC_OTG_LPM
++static int test_lpm_enabled(struct usb_gadget *gadget)
++{
++	struct gadget_wrapper *d;
++
++	d = container_of(gadget, struct gadget_wrapper, gadget);
++
++	return dwc_otg_pcd_is_lpm_enabled(d->pcd);
++}
++#endif
++
++/**
++ * Initiates Session Request Protocol (SRP) to wakeup the host if no
++ * session is in progress. If a session is already in progress, but
++ * the device is suspended, remote wakeup signaling is started.
++ *
++ */
++static int wakeup(struct usb_gadget *gadget)
++{
++	struct gadget_wrapper *d;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, gadget);
++
++	if (gadget == 0) {
++		return -ENODEV;
++	} else {
++		d = container_of(gadget, struct gadget_wrapper, gadget);
++	}
++	dwc_otg_pcd_wakeup(d->pcd);
++	return 0;
++}
++
++static const struct usb_gadget_ops dwc_otg_pcd_ops = {
++	.get_frame = get_frame_number,
++	.wakeup = wakeup,
++#ifdef CONFIG_USB_DWC_OTG_LPM
++	.lpm_support = test_lpm_enabled,
++#endif
++	// current versions must always be self-powered
++};
++
++static int _setup(dwc_otg_pcd_t * pcd, uint8_t * bytes)
++{
++	int retval = -DWC_E_NOT_SUPPORTED;
++	if (gadget_wrapper->driver && gadget_wrapper->driver->setup) {
++		retval = gadget_wrapper->driver->setup(&gadget_wrapper->gadget,
++						       (struct usb_ctrlrequest
++							*)bytes);
++	}
++
++	if (retval == -ENOTSUPP) {
++		retval = -DWC_E_NOT_SUPPORTED;
++	} else if (retval < 0) {
++		retval = -DWC_E_INVALID;
++	}
++
++	return retval;
++}
++
++#ifdef DWC_EN_ISOC
++static int _isoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
++			  void *req_handle, int proc_buf_num)
++{
++	int i, packet_count;
++	struct usb_gadget_iso_packet_descriptor *iso_packet = 0;
++	struct usb_iso_request *iso_req = req_handle;
++
++	if (proc_buf_num) {
++		iso_packet = iso_req->iso_packet_desc1;
++	} else {
++		iso_packet = iso_req->iso_packet_desc0;
++	}
++	packet_count =
++	    dwc_otg_pcd_get_iso_packet_count(pcd, ep_handle, req_handle);
++	for (i = 0; i < packet_count; ++i) {
++		int status;
++		int actual;
++		int offset;
++		dwc_otg_pcd_get_iso_packet_params(pcd, ep_handle, req_handle,
++						  i, &status, &actual, &offset);
++		switch (status) {
++		case -DWC_E_NO_DATA:
++			status = -ENODATA;
++			break;
++		default:
++			if (status) {
++				DWC_PRINTF("unknown status in isoc packet\n");
++			}
++
++		}
++		iso_packet[i].status = status;
++		iso_packet[i].offset = offset;
++		iso_packet[i].actual_length = actual;
++	}
++
++	iso_req->status = 0;
++	iso_req->process_buffer(ep_handle, iso_req);
++
++	return 0;
++}
++#endif /* DWC_EN_ISOC */
++
++#ifdef DWC_UTE_PER_IO
++/**
++ * Copy the contents of the extended request to the Linux usb_request's
++ * extended part and call the gadget's completion.
++ *
++ * @param pcd			Pointer to the pcd structure
++ * @param ep_handle		Void pointer to the usb_ep structure
++ * @param req_handle	Void pointer to the usb_request structure
++ * @param status		Request status returned from the portable logic
++ * @param ereq_port		Void pointer to the extended request structure
++ *						created in the the portable part that contains the
++ *						results of the processed iso packets.
++ */
++static int _xisoc_complete(dwc_otg_pcd_t * pcd, void *ep_handle,
++			   void *req_handle, int32_t status, void *ereq_port)
++{
++	struct dwc_ute_iso_req_ext *ereqorg = NULL;
++	struct dwc_iso_xreq_port *ereqport = NULL;
++	struct dwc_ute_iso_packet_descriptor *desc_org = NULL;
++	int i;
++	struct usb_request *req;
++	//struct dwc_ute_iso_packet_descriptor *
++	//int status = 0;
++
++	req = (struct usb_request *)req_handle;
++	ereqorg = &req->ext_req;
++	ereqport = (struct dwc_iso_xreq_port *)ereq_port;
++	desc_org = ereqorg->per_io_frame_descs;
++
++	if (req && req->complete) {
++		/* Copy the request data from the portable logic to our request */
++		for (i = 0; i < ereqport->pio_pkt_count; i++) {
++			desc_org[i].actual_length =
++			    ereqport->per_io_frame_descs[i].actual_length;
++			desc_org[i].status =
++			    ereqport->per_io_frame_descs[i].status;
++		}
++
++		switch (status) {
++		case -DWC_E_SHUTDOWN:
++			req->status = -ESHUTDOWN;
++			break;
++		case -DWC_E_RESTART:
++			req->status = -ECONNRESET;
++			break;
++		case -DWC_E_INVALID:
++			req->status = -EINVAL;
++			break;
++		case -DWC_E_TIMEOUT:
++			req->status = -ETIMEDOUT;
++			break;
++		default:
++			req->status = status;
++		}
++
++		/* And call the gadget's completion */
++		req->complete(ep_handle, req);
++	}
++
++	return 0;
++}
++#endif /* DWC_UTE_PER_IO */
++
++static int _complete(dwc_otg_pcd_t * pcd, void *ep_handle,
++		     void *req_handle, int32_t status, uint32_t actual)
++{
++	struct usb_request *req = (struct usb_request *)req_handle;
++#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
++	struct dwc_otg_pcd_ep *ep = NULL;
++#endif
++
++	if (req && req->complete) {
++		switch (status) {
++		case -DWC_E_SHUTDOWN:
++			req->status = -ESHUTDOWN;
++			break;
++		case -DWC_E_RESTART:
++			req->status = -ECONNRESET;
++			break;
++		case -DWC_E_INVALID:
++			req->status = -EINVAL;
++			break;
++		case -DWC_E_TIMEOUT:
++			req->status = -ETIMEDOUT;
++			break;
++		default:
++			req->status = status;
++
++		}
++
++		req->actual = actual;
++		DWC_SPINUNLOCK(pcd->lock);
++		req->complete(ep_handle, req);
++		DWC_SPINLOCK(pcd->lock);
++	}
++#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)
++	ep = ep_from_handle(pcd, ep_handle);
++	if (GET_CORE_IF(pcd)->dma_enable) {
++                if (req->length != 0) {
++                        dwc_otg_device_t *otg_dev = gadget_wrapper->pcd->otg_dev;
++                        struct device *dev = NULL;
++
++                        if (otg_dev != NULL)
++                                  dev = DWC_OTG_OS_GETDEV(otg_dev->os_dep);
++
++			dma_unmap_single(dev, req->dma, req->length,
++                                         ep->dwc_ep.is_in ?
++                                                DMA_TO_DEVICE: DMA_FROM_DEVICE);
++                }
++	}
++#endif
++
++	return 0;
++}
++
++static int _connect(dwc_otg_pcd_t * pcd, int speed)
++{
++	gadget_wrapper->gadget.speed = speed;
++	return 0;
++}
++
++static int _disconnect(dwc_otg_pcd_t * pcd)
++{
++	if (gadget_wrapper->driver && gadget_wrapper->driver->disconnect) {
++		gadget_wrapper->driver->disconnect(&gadget_wrapper->gadget);
++	}
++	return 0;
++}
++
++static int _resume(dwc_otg_pcd_t * pcd)
++{
++	if (gadget_wrapper->driver && gadget_wrapper->driver->resume) {
++		gadget_wrapper->driver->resume(&gadget_wrapper->gadget);
++	}
++
++	return 0;
++}
++
++static int _suspend(dwc_otg_pcd_t * pcd)
++{
++	if (gadget_wrapper->driver && gadget_wrapper->driver->suspend) {
++		gadget_wrapper->driver->suspend(&gadget_wrapper->gadget);
++	}
++	return 0;
++}
++
++/**
++ * This function updates the otg values in the gadget structure.
++ */
++static int _hnp_changed(dwc_otg_pcd_t * pcd)
++{
++
++	if (!gadget_wrapper->gadget.is_otg)
++		return 0;
++
++	gadget_wrapper->gadget.b_hnp_enable = get_b_hnp_enable(pcd);
++	gadget_wrapper->gadget.a_hnp_support = get_a_hnp_support(pcd);
++	gadget_wrapper->gadget.a_alt_hnp_support = get_a_alt_hnp_support(pcd);
++	return 0;
++}
++
++static int _reset(dwc_otg_pcd_t * pcd)
++{
++	return 0;
++}
++
++#ifdef DWC_UTE_CFI
++static int _cfi_setup(dwc_otg_pcd_t * pcd, void *cfi_req)
++{
++	int retval = -DWC_E_INVALID;
++	if (gadget_wrapper->driver->cfi_feature_setup) {
++		retval =
++		    gadget_wrapper->driver->
++		    cfi_feature_setup(&gadget_wrapper->gadget,
++				      (struct cfi_usb_ctrlrequest *)cfi_req);
++	}
++
++	return retval;
++}
++#endif
++
++static const struct dwc_otg_pcd_function_ops fops = {
++	.complete = _complete,
++#ifdef DWC_EN_ISOC
++	.isoc_complete = _isoc_complete,
++#endif
++	.setup = _setup,
++	.disconnect = _disconnect,
++	.connect = _connect,
++	.resume = _resume,
++	.suspend = _suspend,
++	.hnp_changed = _hnp_changed,
++	.reset = _reset,
++#ifdef DWC_UTE_CFI
++	.cfi_setup = _cfi_setup,
++#endif
++#ifdef DWC_UTE_PER_IO
++	.xisoc_complete = _xisoc_complete,
++#endif
++};
++
++/**
++ * This function is the top level PCD interrupt handler.
++ */
++static irqreturn_t dwc_otg_pcd_irq(int irq, void *dev)
++{
++	dwc_otg_pcd_t *pcd = dev;
++	int32_t retval = IRQ_NONE;
++
++	retval = dwc_otg_pcd_handle_intr(pcd);
++	if (retval != 0) {
++		S3C2410X_CLEAR_EINTPEND();
++	}
++	return IRQ_RETVAL(retval);
++}
++
++/**
++ * This function initialized the usb_ep structures to there default
++ * state.
++ *
++ * @param d Pointer on gadget_wrapper.
++ */
++void gadget_add_eps(struct gadget_wrapper *d)
++{
++	static const char *names[] = {
++
++		"ep0",
++		"ep1in",
++		"ep2in",
++		"ep3in",
++		"ep4in",
++		"ep5in",
++		"ep6in",
++		"ep7in",
++		"ep8in",
++		"ep9in",
++		"ep10in",
++		"ep11in",
++		"ep12in",
++		"ep13in",
++		"ep14in",
++		"ep15in",
++		"ep1out",
++		"ep2out",
++		"ep3out",
++		"ep4out",
++		"ep5out",
++		"ep6out",
++		"ep7out",
++		"ep8out",
++		"ep9out",
++		"ep10out",
++		"ep11out",
++		"ep12out",
++		"ep13out",
++		"ep14out",
++		"ep15out"
++	};
++
++	int i;
++	struct usb_ep *ep;
++	int8_t dev_endpoints;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s\n", __func__);
++
++	INIT_LIST_HEAD(&d->gadget.ep_list);
++	d->gadget.ep0 = &d->ep0;
++	d->gadget.speed = USB_SPEED_UNKNOWN;
++
++	INIT_LIST_HEAD(&d->gadget.ep0->ep_list);
++
++	/**
++	 * Initialize the EP0 structure.
++	 */
++	ep = &d->ep0;
++
++	/* Init the usb_ep structure. */
++	ep->name = names[0];
++	ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
++
++	/**
++	 * @todo NGS: What should the max packet size be set to
++	 * here?  Before EP type is set?
++	 */
++	ep->maxpacket = MAX_PACKET_SIZE;
++	dwc_otg_pcd_ep_enable(d->pcd, NULL, ep);
++
++	list_add_tail(&ep->ep_list, &d->gadget.ep_list);
++
++	/**
++	 * Initialize the EP structures.
++	 */
++	dev_endpoints = d->pcd->core_if->dev_if->num_in_eps;
++
++	for (i = 0; i < dev_endpoints; i++) {
++		ep = &d->in_ep[i];
++
++		/* Init the usb_ep structure. */
++		ep->name = names[d->pcd->in_ep[i].dwc_ep.num];
++		ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
++
++		/**
++		 * @todo NGS: What should the max packet size be set to
++		 * here?  Before EP type is set?
++		 */
++		ep->maxpacket = MAX_PACKET_SIZE;
++		list_add_tail(&ep->ep_list, &d->gadget.ep_list);
++	}
++
++	dev_endpoints = d->pcd->core_if->dev_if->num_out_eps;
++
++	for (i = 0; i < dev_endpoints; i++) {
++		ep = &d->out_ep[i];
++
++		/* Init the usb_ep structure. */
++		ep->name = names[15 + d->pcd->out_ep[i].dwc_ep.num];
++		ep->ops = (struct usb_ep_ops *)&dwc_otg_pcd_ep_ops;
++
++		/**
++		 * @todo NGS: What should the max packet size be set to
++		 * here?  Before EP type is set?
++		 */
++		ep->maxpacket = MAX_PACKET_SIZE;
++
++		list_add_tail(&ep->ep_list, &d->gadget.ep_list);
++	}
++
++	/* remove ep0 from the list.  There is a ep0 pointer. */
++	list_del_init(&d->ep0.ep_list);
++
++	d->ep0.maxpacket = MAX_EP0_SIZE;
++}
++
++/**
++ * This function releases the Gadget device.
++ * required by device_unregister().
++ *
++ * @todo Should this do something?	Should it free the PCD?
++ */
++static void dwc_otg_pcd_gadget_release(struct device *dev)
++{
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p)\n", __func__, dev);
++}
++
++static struct gadget_wrapper *alloc_wrapper(dwc_bus_dev_t *_dev)
++{
++	static char pcd_name[] = "dwc_otg_pcd";
++	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
++	struct gadget_wrapper *d;
++	int retval;
++
++	d = DWC_ALLOC(sizeof(*d));
++	if (d == NULL) {
++		return NULL;
++	}
++
++	memset(d, 0, sizeof(*d));
++
++	d->gadget.name = pcd_name;
++	d->pcd = otg_dev->pcd;
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
++	strcpy(d->gadget.dev.bus_id, "gadget");
++#else
++	dev_set_name(&d->gadget.dev, "%s", "gadget");
++#endif
++
++	d->gadget.dev.parent = &_dev->dev;
++	d->gadget.dev.release = dwc_otg_pcd_gadget_release;
++	d->gadget.ops = &dwc_otg_pcd_ops;
++	d->gadget.max_speed = dwc_otg_pcd_is_dualspeed(otg_dev->pcd) ? USB_SPEED_HIGH:USB_SPEED_FULL;
++	d->gadget.is_otg = dwc_otg_pcd_is_otg(otg_dev->pcd);
++
++	d->driver = 0;
++	/* Register the gadget device */
++	retval = device_register(&d->gadget.dev);
++	if (retval != 0) {
++		DWC_ERROR("device_register failed\n");
++		DWC_FREE(d);
++		return NULL;
++	}
++
++	return d;
++}
++
++static void free_wrapper(struct gadget_wrapper *d)
++{
++	if (d->driver) {
++		/* should have been done already by driver model core */
++		DWC_WARN("driver '%s' is still registered\n",
++			 d->driver->driver.name);
++#ifdef CONFIG_USB_GADGET
++		usb_gadget_unregister_driver(d->driver);
++#endif
++	}
++
++	device_unregister(&d->gadget.dev);
++	DWC_FREE(d);
++}
++
++/**
++ * This function initialized the PCD portion of the driver.
++ *
++ */
++int pcd_init(dwc_bus_dev_t *_dev)
++{
++	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
++	int retval = 0;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p) otg_dev=%p\n", __func__, _dev, otg_dev);
++
++	otg_dev->pcd = dwc_otg_pcd_init(otg_dev);
++
++	if (!otg_dev->pcd) {
++		DWC_ERROR("dwc_otg_pcd_init failed\n");
++		return -ENOMEM;
++	}
++
++	otg_dev->pcd->otg_dev = otg_dev;
++	gadget_wrapper = alloc_wrapper(_dev);
++
++	/*
++	 * Initialize EP structures
++	 */
++	gadget_add_eps(gadget_wrapper);
++	/*
++	 * Setup interupt handler
++	 */
++	DWC_DEBUGPL(DBG_ANY, "registering handler for irq%d\n",
++                    otg_dev->os_dep.irq_num);
++	retval = request_irq(otg_dev->os_dep.irq_num, dwc_otg_pcd_irq,
++			     IRQF_SHARED, gadget_wrapper->gadget.name,
++			     otg_dev->pcd);
++	if (retval != 0) {
++		DWC_ERROR("request of irq%d failed\n", otg_dev->os_dep.irq_num);
++		free_wrapper(gadget_wrapper);
++		return -EBUSY;
++	}
++
++	dwc_otg_pcd_start(gadget_wrapper->pcd, &fops);
++
++	return retval;
++}
++
++/**
++ * Cleanup the PCD.
++ */
++void pcd_remove(dwc_bus_dev_t *_dev)
++{
++	dwc_otg_device_t *otg_dev = DWC_OTG_BUSDRVDATA(_dev);
++	dwc_otg_pcd_t *pcd = otg_dev->pcd;
++
++	DWC_DEBUGPL(DBG_PCDV, "%s(%p) otg_dev %p\n", __func__, _dev, otg_dev);
++
++	/*
++	 * Free the IRQ
++	 */
++	free_irq(otg_dev->os_dep.irq_num, pcd);
++	dwc_otg_pcd_remove(otg_dev->pcd);
++	free_wrapper(gadget_wrapper);
++	otg_dev->pcd = 0;
++}
++
++#endif /* DWC_HOST_ONLY */
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/dwc_otg_regs.h
+@@ -0,0 +1,2550 @@
++/* ==========================================================================
++ * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_regs.h $
++ * $Revision: #98 $
++ * $Date: 2012/08/10 $
++ * $Change: 2047372 $
++ *
++ * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
++ * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
++ * otherwise expressly agreed to in writing between Synopsys and you.
++ *
++ * The Software IS NOT an item of Licensed Software or Licensed Product under
++ * any End User Software License Agreement or Agreement for Licensed Product
++ * with Synopsys or any supplement thereto. You are permitted to use and
++ * redistribute this Software in source and binary forms, with or without
++ * modification, provided that redistributions of source code must retain this
++ * notice. You may not view, use, disclose, copy or distribute this file or
++ * any information contained herein except pursuant to this license grant from
++ * Synopsys. If you do not agree with this notice, including the disclaimer
++ * below, then you are not authorized to use the Software.
++ *
++ * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" BASIS
++ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS BE LIABLE FOR ANY DIRECT,
++ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
++ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
++ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ * ========================================================================== */
++
++#ifndef __DWC_OTG_REGS_H__
++#define __DWC_OTG_REGS_H__
++
++#include "dwc_otg_core_if.h"
++
++/**
++ * @file
++ *
++ * This file contains the data structures for accessing the DWC_otg core registers.
++ *
++ * The application interfaces with the HS OTG core by reading from and
++ * writing to the Control and Status Register (CSR) space through the
++ * AHB Slave interface. These registers are 32 bits wide, and the
++ * addresses are 32-bit-block aligned.
++ * CSRs are classified as follows:
++ * - Core Global Registers
++ * - Device Mode Registers
++ * - Device Global Registers
++ * - Device Endpoint Specific Registers
++ * - Host Mode Registers
++ * - Host Global Registers
++ * - Host Port CSRs
++ * - Host Channel Specific Registers
++ *
++ * Only the Core Global registers can be accessed in both Device and
++ * Host modes. When the HS OTG core is operating in one mode, either
++ * Device or Host, the application must not access registers from the
++ * other mode. When the core switches from one mode to another, the
++ * registers in the new mode of operation must be reprogrammed as they
++ * would be after a power-on reset.
++ */
++
++/****************************************************************************/
++/** DWC_otg Core registers .
++ * The dwc_otg_core_global_regs structure defines the size
++ * and relative field offsets for the Core Global registers.
++ */
++typedef struct dwc_otg_core_global_regs {
++	/** OTG Control and Status Register.  <i>Offset: 000h</i> */
++	volatile uint32_t gotgctl;
++	/** OTG Interrupt Register.	 <i>Offset: 004h</i> */
++	volatile uint32_t gotgint;
++	/**Core AHB Configuration Register.	 <i>Offset: 008h</i> */
++	volatile uint32_t gahbcfg;
++
++#define DWC_GLBINTRMASK		0x0001
++#define DWC_DMAENABLE		0x0020
++#define DWC_NPTXEMPTYLVL_EMPTY	0x0080
++#define DWC_NPTXEMPTYLVL_HALFEMPTY	0x0000
++#define DWC_PTXEMPTYLVL_EMPTY	0x0100
++#define DWC_PTXEMPTYLVL_HALFEMPTY	0x0000
++
++	/**Core USB Configuration Register.	 <i>Offset: 00Ch</i> */
++	volatile uint32_t gusbcfg;
++	/**Core Reset Register.	 <i>Offset: 010h</i> */
++	volatile uint32_t grstctl;
++	/**Core Interrupt Register.	 <i>Offset: 014h</i> */
++	volatile uint32_t gintsts;
++	/**Core Interrupt Mask Register.  <i>Offset: 018h</i> */
++	volatile uint32_t gintmsk;
++	/**Receive Status Queue Read Register (Read Only).	<i>Offset: 01Ch</i> */
++	volatile uint32_t grxstsr;
++	/**Receive Status Queue Read & POP Register (Read Only).  <i>Offset: 020h</i>*/
++	volatile uint32_t grxstsp;
++	/**Receive FIFO Size Register.	<i>Offset: 024h</i> */
++	volatile uint32_t grxfsiz;
++	/**Non Periodic Transmit FIFO Size Register.  <i>Offset: 028h</i> */
++	volatile uint32_t gnptxfsiz;
++	/**Non Periodic Transmit FIFO/Queue Status Register (Read
++	 * Only). <i>Offset: 02Ch</i> */
++	volatile uint32_t gnptxsts;
++	/**I2C Access Register.	 <i>Offset: 030h</i> */
++	volatile uint32_t gi2cctl;
++	/**PHY Vendor Control Register.	 <i>Offset: 034h</i> */
++	volatile uint32_t gpvndctl;
++	/**General Purpose Input/Output Register.  <i>Offset: 038h</i> */
++	volatile uint32_t ggpio;
++	/**User ID Register.  <i>Offset: 03Ch</i> */
++	volatile uint32_t guid;
++	/**Synopsys ID Register (Read Only).  <i>Offset: 040h</i> */
++	volatile uint32_t gsnpsid;
++	/**User HW Config1 Register (Read Only).  <i>Offset: 044h</i> */
++	volatile uint32_t ghwcfg1;
++	/**User HW Config2 Register (Read Only).  <i>Offset: 048h</i> */
++	volatile uint32_t ghwcfg2;
++#define DWC_SLAVE_ONLY_ARCH 0
++#define DWC_EXT_DMA_ARCH 1
++#define DWC_INT_DMA_ARCH 2
++
++#define DWC_MODE_HNP_SRP_CAPABLE	0
++#define DWC_MODE_SRP_ONLY_CAPABLE	1
++#define DWC_MODE_NO_HNP_SRP_CAPABLE		2
++#define DWC_MODE_SRP_CAPABLE_DEVICE		3
++#define DWC_MODE_NO_SRP_CAPABLE_DEVICE	4
++#define DWC_MODE_SRP_CAPABLE_HOST	5
++#define DWC_MODE_NO_SRP_CAPABLE_HOST	6
++
++	/**User HW Config3 Register (Read Only).  <i>Offset: 04Ch</i> */
++	volatile uint32_t ghwcfg3;
++	/**User HW Config4 Register (Read Only).  <i>Offset: 050h</i>*/
++	volatile uint32_t ghwcfg4;
++	/** Core LPM Configuration register <i>Offset: 054h</i>*/
++	volatile uint32_t glpmcfg;
++	/** Global PowerDn Register <i>Offset: 058h</i> */
++	volatile uint32_t gpwrdn;
++	/** Global DFIFO SW Config Register  <i>Offset: 05Ch</i> */
++	volatile uint32_t gdfifocfg;
++	/** ADP Control Register  <i>Offset: 060h</i> */
++	volatile uint32_t adpctl;
++	/** Reserved  <i>Offset: 064h-0FFh</i> */
++	volatile uint32_t reserved39[39];
++	/** Host Periodic Transmit FIFO Size Register. <i>Offset: 100h</i> */
++	volatile uint32_t hptxfsiz;
++	/** Device Periodic Transmit FIFO#n Register if dedicated fifos are disabled,
++		otherwise Device Transmit FIFO#n Register.
++	 * <i>Offset: 104h + (FIFO_Number-1)*04h, 1 <= FIFO Number <= 15 (1<=n<=15).</i> */
++	volatile uint32_t dtxfsiz[15];
++} dwc_otg_core_global_regs_t;
++
++/**
++ * This union represents the bit fields of the Core OTG Control
++ * and Status Register (GOTGCTL).  Set the bits using the bit
++ * fields then write the <i>d32</i> value to the register.
++ */
++typedef union gotgctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned sesreqscs:1;
++		unsigned sesreq:1;
++		unsigned vbvalidoven:1;
++		unsigned vbvalidovval:1;
++		unsigned avalidoven:1;
++		unsigned avalidovval:1;
++		unsigned bvalidoven:1;
++		unsigned bvalidovval:1;
++		unsigned hstnegscs:1;
++		unsigned hnpreq:1;
++		unsigned hstsethnpen:1;
++		unsigned devhnpen:1;
++		unsigned reserved12_15:4;
++		unsigned conidsts:1;
++		unsigned dbnctime:1;
++		unsigned asesvld:1;
++		unsigned bsesvld:1;
++		unsigned otgver:1;
++		unsigned reserved1:1;
++		unsigned multvalidbc:5;
++		unsigned chirpen:1;
++		unsigned reserved28_31:4;
++	} b;
++} gotgctl_data_t;
++
++/**
++ * This union represents the bit fields of the Core OTG Interrupt Register
++ * (GOTGINT).  Set/clear the bits using the bit fields then write the <i>d32</i>
++ * value to the register.
++ */
++typedef union gotgint_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Current Mode */
++		unsigned reserved0_1:2;
++
++		/** Session End Detected */
++		unsigned sesenddet:1;
++
++		unsigned reserved3_7:5;
++
++		/** Session Request Success Status Change */
++		unsigned sesreqsucstschng:1;
++		/** Host Negotiation Success Status Change */
++		unsigned hstnegsucstschng:1;
++
++		unsigned reserved10_16:7;
++
++		/** Host Negotiation Detected */
++		unsigned hstnegdet:1;
++		/** A-Device Timeout Change */
++		unsigned adevtoutchng:1;
++		/** Debounce Done */
++		unsigned debdone:1;
++		/** Multi-Valued input changed */
++		unsigned mvic:1;
++
++		unsigned reserved31_21:11;
++
++	} b;
++} gotgint_data_t;
++
++/**
++ * This union represents the bit fields of the Core AHB Configuration
++ * Register (GAHBCFG). Set/clear the bits using the bit fields then
++ * write the <i>d32</i> value to the register.
++ */
++typedef union gahbcfg_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned glblintrmsk:1;
++#define DWC_GAHBCFG_GLBINT_ENABLE		1
++
++		unsigned hburstlen:4;
++#define DWC_GAHBCFG_INT_DMA_BURST_SINGLE	0
++#define DWC_GAHBCFG_INT_DMA_BURST_INCR		1
++#define DWC_GAHBCFG_INT_DMA_BURST_INCR4		3
++#define DWC_GAHBCFG_INT_DMA_BURST_INCR8		5
++#define DWC_GAHBCFG_INT_DMA_BURST_INCR16	7
++
++		unsigned dmaenable:1;
++#define DWC_GAHBCFG_DMAENABLE			1
++		unsigned reserved:1;
++		unsigned nptxfemplvl_txfemplvl:1;
++		unsigned ptxfemplvl:1;
++#define DWC_GAHBCFG_TXFEMPTYLVL_EMPTY		1
++#define DWC_GAHBCFG_TXFEMPTYLVL_HALFEMPTY	0
++		unsigned reserved9_20:12;
++		unsigned remmemsupp:1;
++		unsigned notialldmawrit:1;
++		unsigned ahbsingle:1;
++		unsigned reserved24_31:8;
++	} b;
++} gahbcfg_data_t;
++
++/**
++ * This union represents the bit fields of the Core USB Configuration
++ * Register (GUSBCFG). Set the bits using the bit fields then write
++ * the <i>d32</i> value to the register.
++ */
++typedef union gusbcfg_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned toutcal:3;
++		unsigned phyif:1;
++		unsigned ulpi_utmi_sel:1;
++		unsigned fsintf:1;
++		unsigned physel:1;
++		unsigned ddrsel:1;
++		unsigned srpcap:1;
++		unsigned hnpcap:1;
++		unsigned usbtrdtim:4;
++		unsigned reserved1:1;
++		unsigned phylpwrclksel:1;
++		unsigned otgutmifssel:1;
++		unsigned ulpi_fsls:1;
++		unsigned ulpi_auto_res:1;
++		unsigned ulpi_clk_sus_m:1;
++		unsigned ulpi_ext_vbus_drv:1;
++		unsigned ulpi_int_vbus_indicator:1;
++		unsigned term_sel_dl_pulse:1;
++		unsigned indicator_complement:1;
++		unsigned indicator_pass_through:1;
++		unsigned ulpi_int_prot_dis:1;
++		unsigned ic_usb_cap:1;
++		unsigned ic_traffic_pull_remove:1;
++		unsigned tx_end_delay:1;
++		unsigned force_host_mode:1;
++		unsigned force_dev_mode:1;
++		unsigned reserved31:1;
++	} b;
++} gusbcfg_data_t;
++
++/**
++ * This union represents the bit fields of the Core Reset Register
++ * (GRSTCTL).  Set/clear the bits using the bit fields then write the
++ * <i>d32</i> value to the register.
++ */
++typedef union grstctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Core Soft Reset (CSftRst) (Device and Host)
++		 *
++		 * The application can flush the control logic in the
++		 * entire core using this bit. This bit resets the
++		 * pipelines in the AHB Clock domain as well as the
++		 * PHY Clock domain.
++		 *
++		 * The state machines are reset to an IDLE state, the
++		 * control bits in the CSRs are cleared, all the
++		 * transmit FIFOs and the receive FIFO are flushed.
++		 *
++		 * The status mask bits that control the generation of
++		 * the interrupt, are cleared, to clear the
++		 * interrupt. The interrupt status bits are not
++		 * cleared, so the application can get the status of
++		 * any events that occurred in the core after it has
++		 * set this bit.
++		 *
++		 * Any transactions on the AHB are terminated as soon
++		 * as possible following the protocol. Any
++		 * transactions on the USB are terminated immediately.
++		 *
++		 * The configuration settings in the CSRs are
++		 * unchanged, so the software doesn't have to
++		 * reprogram these registers (Device
++		 * Configuration/Host Configuration/Core System
++		 * Configuration/Core PHY Configuration).
++		 *
++		 * The application can write to this bit, any time it
++		 * wants to reset the core. This is a self clearing
++		 * bit and the core clears this bit after all the
++		 * necessary logic is reset in the core, which may
++		 * take several clocks, depending on the current state
++		 * of the core.
++		 */
++		unsigned csftrst:1;
++		/** Hclk Soft Reset
++		 *
++		 * The application uses this bit to reset the control logic in
++		 * the AHB clock domain. Only AHB clock domain pipelines are
++		 * reset.
++		 */
++		unsigned hsftrst:1;
++		/** Host Frame Counter Reset (Host Only)<br>
++		 *
++		 * The application can reset the (micro)frame number
++		 * counter inside the core, using this bit. When the
++		 * (micro)frame counter is reset, the subsequent SOF
++		 * sent out by the core, will have a (micro)frame
++		 * number of 0.
++		 */
++		unsigned hstfrm:1;
++		/** In Token Sequence Learning Queue Flush
++		 * (INTknQFlsh) (Device Only)
++		 */
++		unsigned intknqflsh:1;
++		/** RxFIFO Flush (RxFFlsh) (Device and Host)
++		 *
++		 * The application can flush the entire Receive FIFO
++		 * using this bit. The application must first
++		 * ensure that the core is not in the middle of a
++		 * transaction. The application should write into
++		 * this bit, only after making sure that neither the
++		 * DMA engine is reading from the RxFIFO nor the MAC
++		 * is writing the data in to the FIFO. The
++		 * application should wait until the bit is cleared
++		 * before performing any other operations. This bit
++		 * will takes 8 clocks (slowest of PHY or AHB clock)
++		 * to clear.
++		 */
++		unsigned rxfflsh:1;
++		/** TxFIFO Flush (TxFFlsh) (Device and Host).
++		 *
++		 * This bit is used to selectively flush a single or
++		 * all transmit FIFOs. The application must first
++		 * ensure that the core is not in the middle of a
++		 * transaction. The application should write into
++		 * this bit, only after making sure that neither the
++		 * DMA engine is writing into the TxFIFO nor the MAC
++		 * is reading the data out of the FIFO. The
++		 * application should wait until the core clears this
++		 * bit, before performing any operations. This bit
++		 * will takes 8 clocks (slowest of PHY or AHB clock)
++		 * to clear.
++		 */
++		unsigned txfflsh:1;
++
++		/** TxFIFO Number (TxFNum) (Device and Host).
++		 *
++		 * This is the FIFO number which needs to be flushed,
++		 * using the TxFIFO Flush bit. This field should not
++		 * be changed until the TxFIFO Flush bit is cleared by
++		 * the core.
++		 *	 - 0x0 : Non Periodic TxFIFO Flush
++		 *	 - 0x1 : Periodic TxFIFO #1 Flush in device mode
++		 *	   or Periodic TxFIFO in host mode
++		 *	 - 0x2 : Periodic TxFIFO #2 Flush in device mode.
++		 *	 - ...
++		 *	 - 0xF : Periodic TxFIFO #15 Flush in device mode
++		 *	 - 0x10: Flush all the Transmit NonPeriodic and
++		 *	   Transmit Periodic FIFOs in the core
++		 */
++		unsigned txfnum:5;
++		/** Reserved */
++		unsigned reserved11_29:19;
++		/** DMA Request Signal.	 Indicated DMA request is in
++		 * probress. Used for debug purpose. */
++		unsigned dmareq:1;
++		/** AHB Master Idle.  Indicates the AHB Master State
++		 * Machine is in IDLE condition. */
++		unsigned ahbidle:1;
++	} b;
++} grstctl_t;
++
++/**
++ * This union represents the bit fields of the Core Interrupt Mask
++ * Register (GINTMSK). Set/clear the bits using the bit fields then
++ * write the <i>d32</i> value to the register.
++ */
++typedef union gintmsk_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned reserved0:1;
++		unsigned modemismatch:1;
++		unsigned otgintr:1;
++		unsigned sofintr:1;
++		unsigned rxstsqlvl:1;
++		unsigned nptxfempty:1;
++		unsigned ginnakeff:1;
++		unsigned goutnakeff:1;
++		unsigned ulpickint:1;
++		unsigned i2cintr:1;
++		unsigned erlysuspend:1;
++		unsigned usbsuspend:1;
++		unsigned usbreset:1;
++		unsigned enumdone:1;
++		unsigned isooutdrop:1;
++		unsigned eopframe:1;
++		unsigned restoredone:1;
++		unsigned epmismatch:1;
++		unsigned inepintr:1;
++		unsigned outepintr:1;
++		unsigned incomplisoin:1;
++		unsigned incomplisoout:1;
++		unsigned fetsusp:1;
++		unsigned resetdet:1;
++		unsigned portintr:1;
++		unsigned hcintr:1;
++		unsigned ptxfempty:1;
++		unsigned lpmtranrcvd:1;
++		unsigned conidstschng:1;
++		unsigned disconnect:1;
++		unsigned sessreqintr:1;
++		unsigned wkupintr:1;
++	} b;
++} gintmsk_data_t;
++/**
++ * This union represents the bit fields of the Core Interrupt Register
++ * (GINTSTS).  Set/clear the bits using the bit fields then write the
++ * <i>d32</i> value to the register.
++ */
++typedef union gintsts_data {
++	/** raw register data */
++	uint32_t d32;
++#define DWC_SOF_INTR_MASK 0x0008
++	/** register bits */
++	struct {
++#define DWC_HOST_MODE 1
++		unsigned curmode:1;
++		unsigned modemismatch:1;
++		unsigned otgintr:1;
++		unsigned sofintr:1;
++		unsigned rxstsqlvl:1;
++		unsigned nptxfempty:1;
++		unsigned ginnakeff:1;
++		unsigned goutnakeff:1;
++		unsigned ulpickint:1;
++		unsigned i2cintr:1;
++		unsigned erlysuspend:1;
++		unsigned usbsuspend:1;
++		unsigned usbreset:1;
++		unsigned enumdone:1;
++		unsigned isooutdrop:1;
++		unsigned eopframe:1;
++		unsigned restoredone:1;
++		unsigned epmismatch:1;
++		unsigned inepint:1;
++		unsigned outepintr:1;
++		unsigned incomplisoin:1;
++		unsigned incomplisoout:1;
++		unsigned fetsusp:1;
++		unsigned resetdet:1;
++		unsigned portintr:1;
++		unsigned hcintr:1;
++		unsigned ptxfempty:1;
++		unsigned lpmtranrcvd:1;
++		unsigned conidstschng:1;
++		unsigned disconnect:1;
++		unsigned sessreqintr:1;
++		unsigned wkupintr:1;
++	} b;
++} gintsts_data_t;
++
++/**
++ * This union represents the bit fields in the Device Receive Status Read and
++ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
++ * element then read out the bits using the <i>b</i>it elements.
++ */
++typedef union device_grxsts_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned epnum:4;
++		unsigned bcnt:11;
++		unsigned dpid:2;
++
++#define DWC_STS_DATA_UPDT		0x2	// OUT Data Packet
++#define DWC_STS_XFER_COMP		0x3	// OUT Data Transfer Complete
++
++#define DWC_DSTS_GOUT_NAK		0x1	// Global OUT NAK
++#define DWC_DSTS_SETUP_COMP		0x4	// Setup Phase Complete
++#define DWC_DSTS_SETUP_UPDT 0x6	// SETUP Packet
++		unsigned pktsts:4;
++		unsigned fn:4;
++		unsigned reserved25_31:7;
++	} b;
++} device_grxsts_data_t;
++
++/**
++ * This union represents the bit fields in the Host Receive Status Read and
++ * Pop Registers (GRXSTSR, GRXSTSP) Read the register into the <i>d32</i>
++ * element then read out the bits using the <i>b</i>it elements.
++ */
++typedef union host_grxsts_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned chnum:4;
++		unsigned bcnt:11;
++		unsigned dpid:2;
++
++		unsigned pktsts:4;
++#define DWC_GRXSTS_PKTSTS_IN			  0x2
++#define DWC_GRXSTS_PKTSTS_IN_XFER_COMP	  0x3
++#define DWC_GRXSTS_PKTSTS_DATA_TOGGLE_ERR 0x5
++#define DWC_GRXSTS_PKTSTS_CH_HALTED		  0x7
++
++		unsigned reserved21_31:11;
++	} b;
++} host_grxsts_data_t;
++
++/**
++ * This union represents the bit fields in the FIFO Size Registers (HPTXFSIZ,
++ * GNPTXFSIZ, DPTXFSIZn, DIEPTXFn). Read the register into the <i>d32</i> element
++ * then read out the bits using the <i>b</i>it elements.
++ */
++typedef union fifosize_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned startaddr:16;
++		unsigned depth:16;
++	} b;
++} fifosize_data_t;
++
++/**
++ * This union represents the bit fields in the Non-Periodic Transmit
++ * FIFO/Queue Status Register (GNPTXSTS). Read the register into the
++ * <i>d32</i> element then read out the bits using the <i>b</i>it
++ * elements.
++ */
++typedef union gnptxsts_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned nptxfspcavail:16;
++		unsigned nptxqspcavail:8;
++		/** Top of the Non-Periodic Transmit Request Queue
++		 *	- bit 24 - Terminate (Last entry for the selected
++		 *	  channel/EP)
++		 *	- bits 26:25 - Token Type
++		 *	  - 2'b00 - IN/OUT
++		 *	  - 2'b01 - Zero Length OUT
++		 *	  - 2'b10 - PING/Complete Split
++		 *	  - 2'b11 - Channel Halt
++		 *	- bits 30:27 - Channel/EP Number
++		 */
++		unsigned nptxqtop_terminate:1;
++		unsigned nptxqtop_token:2;
++		unsigned nptxqtop_chnep:4;
++		unsigned reserved:1;
++	} b;
++} gnptxsts_data_t;
++
++/**
++ * This union represents the bit fields in the Transmit
++ * FIFO Status Register (DTXFSTS). Read the register into the
++ * <i>d32</i> element then read out the bits using the <i>b</i>it
++ * elements.
++ */
++typedef union dtxfsts_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned txfspcavail:16;
++		unsigned reserved:16;
++	} b;
++} dtxfsts_data_t;
++
++/**
++ * This union represents the bit fields in the I2C Control Register
++ * (I2CCTL). Read the register into the <i>d32</i> element then read out the
++ * bits using the <i>b</i>it elements.
++ */
++typedef union gi2cctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned rwdata:8;
++		unsigned regaddr:8;
++		unsigned addr:7;
++		unsigned i2cen:1;
++		unsigned ack:1;
++		unsigned i2csuspctl:1;
++		unsigned i2cdevaddr:2;
++		unsigned i2cdatse0:1;
++		unsigned reserved:1;
++		unsigned rw:1;
++		unsigned bsydne:1;
++	} b;
++} gi2cctl_data_t;
++
++/**
++ * This union represents the bit fields in the PHY Vendor Control Register
++ * (GPVNDCTL). Read the register into the <i>d32</i> element then read out the
++ * bits using the <i>b</i>it elements.
++ */
++typedef union gpvndctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned regdata:8;
++		unsigned vctrl:8;
++		unsigned regaddr16_21:6;
++		unsigned regwr:1;
++		unsigned reserved23_24:2;
++		unsigned newregreq:1;
++		unsigned vstsbsy:1;
++		unsigned vstsdone:1;
++		unsigned reserved28_30:3;
++		unsigned disulpidrvr:1;
++	} b;
++} gpvndctl_data_t;
++
++/**
++ * This union represents the bit fields in the General Purpose
++ * Input/Output Register (GGPIO).
++ * Read the register into the <i>d32</i> element then read out the
++ * bits using the <i>b</i>it elements.
++ */
++typedef union ggpio_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned gpi:16;
++		unsigned gpo:16;
++	} b;
++} ggpio_data_t;
++
++/**
++ * This union represents the bit fields in the User ID Register
++ * (GUID). Read the register into the <i>d32</i> element then read out the
++ * bits using the <i>b</i>it elements.
++ */
++typedef union guid_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned rwdata:32;
++	} b;
++} guid_data_t;
++
++/**
++ * This union represents the bit fields in the Synopsys ID Register
++ * (GSNPSID). Read the register into the <i>d32</i> element then read out the
++ * bits using the <i>b</i>it elements.
++ */
++typedef union gsnpsid_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned rwdata:32;
++	} b;
++} gsnpsid_data_t;
++
++/**
++ * This union represents the bit fields in the User HW Config1
++ * Register.  Read the register into the <i>d32</i> element then read
++ * out the bits using the <i>b</i>it elements.
++ */
++typedef union hwcfg1_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned ep_dir0:2;
++		unsigned ep_dir1:2;
++		unsigned ep_dir2:2;
++		unsigned ep_dir3:2;
++		unsigned ep_dir4:2;
++		unsigned ep_dir5:2;
++		unsigned ep_dir6:2;
++		unsigned ep_dir7:2;
++		unsigned ep_dir8:2;
++		unsigned ep_dir9:2;
++		unsigned ep_dir10:2;
++		unsigned ep_dir11:2;
++		unsigned ep_dir12:2;
++		unsigned ep_dir13:2;
++		unsigned ep_dir14:2;
++		unsigned ep_dir15:2;
++	} b;
++} hwcfg1_data_t;
++
++/**
++ * This union represents the bit fields in the User HW Config2
++ * Register.  Read the register into the <i>d32</i> element then read
++ * out the bits using the <i>b</i>it elements.
++ */
++typedef union hwcfg2_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/* GHWCFG2 */
++		unsigned op_mode:3;
++#define DWC_HWCFG2_OP_MODE_HNP_SRP_CAPABLE_OTG 0
++#define DWC_HWCFG2_OP_MODE_SRP_ONLY_CAPABLE_OTG 1
++#define DWC_HWCFG2_OP_MODE_NO_HNP_SRP_CAPABLE_OTG 2
++#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_DEVICE 3
++#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_DEVICE 4
++#define DWC_HWCFG2_OP_MODE_SRP_CAPABLE_HOST 5
++#define DWC_HWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST 6
++
++		unsigned architecture:2;
++		unsigned point2point:1;
++		unsigned hs_phy_type:2;
++#define DWC_HWCFG2_HS_PHY_TYPE_NOT_SUPPORTED 0
++#define DWC_HWCFG2_HS_PHY_TYPE_UTMI 1
++#define DWC_HWCFG2_HS_PHY_TYPE_ULPI 2
++#define DWC_HWCFG2_HS_PHY_TYPE_UTMI_ULPI 3
++
++		unsigned fs_phy_type:2;
++		unsigned num_dev_ep:4;
++		unsigned num_host_chan:4;
++		unsigned perio_ep_supported:1;
++		unsigned dynamic_fifo:1;
++		unsigned multi_proc_int:1;
++		unsigned reserved21:1;
++		unsigned nonperio_tx_q_depth:2;
++		unsigned host_perio_tx_q_depth:2;
++		unsigned dev_token_q_depth:5;
++		unsigned otg_enable_ic_usb:1;
++	} b;
++} hwcfg2_data_t;
++
++/**
++ * This union represents the bit fields in the User HW Config3
++ * Register.  Read the register into the <i>d32</i> element then read
++ * out the bits using the <i>b</i>it elements.
++ */
++typedef union hwcfg3_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/* GHWCFG3 */
++		unsigned xfer_size_cntr_width:4;
++		unsigned packet_size_cntr_width:3;
++		unsigned otg_func:1;
++		unsigned i2c:1;
++		unsigned vendor_ctrl_if:1;
++		unsigned optional_features:1;
++		unsigned synch_reset_type:1;
++		unsigned adp_supp:1;
++		unsigned otg_enable_hsic:1;
++		unsigned bc_support:1;
++		unsigned otg_lpm_en:1;
++		unsigned dfifo_depth:16;
++	} b;
++} hwcfg3_data_t;
++
++/**
++ * This union represents the bit fields in the User HW Config4
++ * Register.  Read the register into the <i>d32</i> element then read
++ * out the bits using the <i>b</i>it elements.
++ */
++typedef union hwcfg4_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned num_dev_perio_in_ep:4;
++		unsigned power_optimiz:1;
++		unsigned min_ahb_freq:1;
++		unsigned hiber:1;
++		unsigned xhiber:1;
++		unsigned reserved:6;
++		unsigned utmi_phy_data_width:2;
++		unsigned num_dev_mode_ctrl_ep:4;
++		unsigned iddig_filt_en:1;
++		unsigned vbus_valid_filt_en:1;
++		unsigned a_valid_filt_en:1;
++		unsigned b_valid_filt_en:1;
++		unsigned session_end_filt_en:1;
++		unsigned ded_fifo_en:1;
++		unsigned num_in_eps:4;
++		unsigned desc_dma:1;
++		unsigned desc_dma_dyn:1;
++	} b;
++} hwcfg4_data_t;
++
++/**
++ * This union represents the bit fields of the Core LPM Configuration
++ * Register (GLPMCFG). Set the bits using bit fields then write
++ * the <i>d32</i> value to the register.
++ */
++typedef union glpmctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** LPM-Capable (LPMCap) (Device and Host)
++		 * The application uses this bit to control
++		 * the DWC_otg core LPM capabilities.
++		 */
++		unsigned lpm_cap_en:1;
++		/** LPM response programmed by application (AppL1Res) (Device)
++		 * Handshake response to LPM token pre-programmed
++		 * by device application software.
++		 */
++		unsigned appl_resp:1;
++		/** Host Initiated Resume Duration (HIRD) (Device and Host)
++		 * In Host mode this field indicates the value of HIRD
++		 * to be sent in an LPM transaction.
++		 * In Device mode this field is updated with the
++		 * Received LPM Token HIRD bmAttribute
++		 * when an ACK/NYET/STALL response is sent
++		 * to an LPM transaction.
++		 */
++		unsigned hird:4;
++		/** RemoteWakeEnable (bRemoteWake) (Device and Host)
++		 * In Host mode this bit indicates the value of remote
++		 * wake up to be sent in wIndex field of LPM transaction.
++		 * In Device mode this field is updated with the
++		 * Received LPM Token bRemoteWake bmAttribute
++		 * when an ACK/NYET/STALL response is sent
++		 * to an LPM transaction.
++		 */
++		unsigned rem_wkup_en:1;
++		/** Enable utmi_sleep_n (EnblSlpM) (Device and Host)
++		 * The application uses this bit to control
++		 * the utmi_sleep_n assertion to the PHY when in L1 state.
++		 */
++		unsigned en_utmi_sleep:1;
++		/** HIRD Threshold (HIRD_Thres) (Device and Host)
++		 */
++		unsigned hird_thres:5;
++		/** LPM Response (CoreL1Res) (Device and Host)
++		 * In Host mode this bit contains handsake response to
++		 * LPM transaction.
++		 * In Device mode the response of the core to
++		 * LPM transaction received is reflected in these two bits.
++			- 0x0 : ERROR (No handshake response)
++			- 0x1 : STALL
++			- 0x2 : NYET
++			- 0x3 : ACK
++		 */
++		unsigned lpm_resp:2;
++		/** Port Sleep Status (SlpSts) (Device and Host)
++		 * This bit is set as long as a Sleep condition
++		 * is present on the USB bus.
++		 */
++		unsigned prt_sleep_sts:1;
++		/** Sleep State Resume OK (L1ResumeOK) (Device and Host)
++		 * Indicates that the application or host
++		 * can start resume from Sleep state.
++		 */
++		unsigned sleep_state_resumeok:1;
++		/** LPM channel Index (LPM_Chnl_Indx) (Host)
++		 * The channel number on which the LPM transaction
++		 * has to be applied while sending
++		 * an LPM transaction to the local device.
++		 */
++		unsigned lpm_chan_index:4;
++		/** LPM Retry Count (LPM_Retry_Cnt) (Host)
++		 * Number host retries that would be performed
++		 * if the device response was not valid response.
++		 */
++		unsigned retry_count:3;
++		/** Send LPM Transaction (SndLPM) (Host)
++		 * When set by application software,
++		 * an LPM transaction containing two tokens
++		 * is sent.
++		 */
++		unsigned send_lpm:1;
++		/** LPM Retry status (LPM_RetryCnt_Sts) (Host)
++		 * Number of LPM Host Retries still remaining
++		 * to be transmitted for the current LPM sequence
++		 */
++		unsigned retry_count_sts:3;
++		unsigned reserved28_29:2;
++		/** In host mode once this bit is set, the host
++		 * configures to drive the HSIC Idle state on the bus.
++		 * It then waits for the  device to initiate the Connect sequence.
++		 * In device mode once this bit is set, the device waits for
++		 * the HSIC Idle line state on the bus. Upon receving the Idle
++		 * line state, it initiates the HSIC Connect sequence.
++		 */
++		unsigned hsic_connect:1;
++		/** This bit overrides and functionally inverts
++		 * the if_select_hsic input port signal.
++		 */
++		unsigned inv_sel_hsic:1;
++	} b;
++} glpmcfg_data_t;
++
++/**
++ * This union represents the bit fields of the Core ADP Timer, Control and
++ * Status Register (ADPTIMCTLSTS). Set the bits using bit fields then write
++ * the <i>d32</i> value to the register.
++ */
++typedef union adpctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Probe Discharge (PRB_DSCHG)
++		 *  These bits set the times for TADP_DSCHG.
++		 *  These bits are defined as follows:
++		 *  2'b00 - 4 msec
++		 *  2'b01 - 8 msec
++		 *  2'b10 - 16 msec
++		 *  2'b11 - 32 msec
++		 */
++		unsigned prb_dschg:2;
++		/** Probe Delta (PRB_DELTA)
++		 *  These bits set the resolution for RTIM   value.
++		 *  The bits are defined in units of 32 kHz clock cycles as follows:
++		 *  2'b00  -  1 cycles
++		 *  2'b01  -  2 cycles
++		 *  2'b10 -  3 cycles
++		 *  2'b11 - 4 cycles
++		 *  For example if this value is chosen to 2'b01, it means that RTIM
++		 *  increments for every 3(three) 32Khz clock cycles.
++		 */
++		unsigned prb_delta:2;
++		/** Probe Period (PRB_PER)
++		 *  These bits sets the TADP_PRD as shown in Figure 4 as follows:
++		 *  2'b00  -  0.625 to 0.925 sec (typical 0.775 sec)
++		 *  2'b01  -  1.25 to 1.85 sec (typical 1.55 sec)
++		 *  2'b10  -  1.9 to 2.6 sec (typical 2.275 sec)
++		 *  2'b11  -  Reserved
++		 */
++		unsigned prb_per:2;
++		/** These bits capture the latest time it took for VBUS to ramp from
++		 *  VADP_SINK to VADP_PRB.
++		 *  0x000  -  1 cycles
++		 *  0x001  -  2 cycles
++		 *  0x002  -  3 cycles
++		 *  etc
++		 *  0x7FF  -  2048 cycles
++		 *  A time of 1024 cycles at 32 kHz corresponds to a time of 32 msec.
++		*/
++		unsigned rtim:11;
++		/** Enable Probe (EnaPrb)
++		 *  When programmed to 1'b1, the core performs a probe operation.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned enaprb:1;
++		/** Enable Sense (EnaSns)
++		 *  When programmed to 1'b1, the core performs a Sense operation.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned enasns:1;
++		/** ADP Reset (ADPRes)
++		 *  When set, ADP controller is reset.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adpres:1;
++		/** ADP Enable (ADPEn)
++		 *  When set, the core performs either ADP probing or sensing
++		 *  based on EnaPrb or EnaSns.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adpen:1;
++		/** ADP Probe Interrupt (ADP_PRB_INT)
++		 *  When this bit is set, it means that the VBUS
++		 *  voltage is greater than VADP_PRB or VADP_PRB is reached.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adp_prb_int:1;
++		/**
++		 *  ADP Sense Interrupt (ADP_SNS_INT)
++		 *  When this bit is set, it means that the VBUS voltage is greater than
++		 *  VADP_SNS value or VADP_SNS is reached.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adp_sns_int:1;
++		/** ADP Tomeout Interrupt (ADP_TMOUT_INT)
++		 *  This bit is relevant only for an ADP probe.
++		 *  When this bit is set, it means that the ramp time has
++		 *  completed ie ADPCTL.RTIM has reached its terminal value
++		 *  of 0x7FF.  This is a debug feature that allows software
++		 *  to read the ramp time after each cycle.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adp_tmout_int:1;
++		/** ADP Probe Interrupt Mask (ADP_PRB_INT_MSK)
++		 *  When this bit is set, it unmasks the interrupt due to ADP_PRB_INT.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adp_prb_int_msk:1;
++		/** ADP Sense Interrupt Mask (ADP_SNS_INT_MSK)
++		 *  When this bit is set, it unmasks the interrupt due to ADP_SNS_INT.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adp_sns_int_msk:1;
++		/** ADP Timoeout Interrupt Mask (ADP_TMOUT_MSK)
++		 *  When this bit is set, it unmasks the interrupt due to ADP_TMOUT_INT.
++		 *  This bit is valid only if OTG_Ver = 1'b1.
++		 */
++		unsigned adp_tmout_int_msk:1;
++		/** Access Request
++		 * 2'b00 - Read/Write Valid (updated by the core)
++		 * 2'b01 - Read
++		 * 2'b00 - Write
++		 * 2'b00 - Reserved
++		 */
++		unsigned ar:2;
++		 /** Reserved */
++		unsigned reserved29_31:3;
++	} b;
++} adpctl_data_t;
++
++////////////////////////////////////////////
++// Device Registers
++/**
++ * Device Global Registers. <i>Offsets 800h-BFFh</i>
++ *
++ * The following structures define the size and relative field offsets
++ * for the Device Mode Registers.
++ *
++ * <i>These registers are visible only in Device mode and must not be
++ * accessed in Host mode, as the results are unknown.</i>
++ */
++typedef struct dwc_otg_dev_global_regs {
++	/** Device Configuration Register. <i>Offset 800h</i> */
++	volatile uint32_t dcfg;
++	/** Device Control Register. <i>Offset: 804h</i> */
++	volatile uint32_t dctl;
++	/** Device Status Register (Read Only). <i>Offset: 808h</i> */
++	volatile uint32_t dsts;
++	/** Reserved. <i>Offset: 80Ch</i> */
++	uint32_t unused;
++	/** Device IN Endpoint Common Interrupt Mask
++	 * Register. <i>Offset: 810h</i> */
++	volatile uint32_t diepmsk;
++	/** Device OUT Endpoint Common Interrupt Mask
++	 * Register. <i>Offset: 814h</i> */
++	volatile uint32_t doepmsk;
++	/** Device All Endpoints Interrupt Register.  <i>Offset: 818h</i> */
++	volatile uint32_t daint;
++	/** Device All Endpoints Interrupt Mask Register.  <i>Offset:
++	 * 81Ch</i> */
++	volatile uint32_t daintmsk;
++	/** Device IN Token Queue Read Register-1 (Read Only).
++	 * <i>Offset: 820h</i> */
++	volatile uint32_t dtknqr1;
++	/** Device IN Token Queue Read Register-2 (Read Only).
++	 * <i>Offset: 824h</i> */
++	volatile uint32_t dtknqr2;
++	/** Device VBUS	 discharge Register.  <i>Offset: 828h</i> */
++	volatile uint32_t dvbusdis;
++	/** Device VBUS Pulse Register.	 <i>Offset: 82Ch</i> */
++	volatile uint32_t dvbuspulse;
++	/** Device IN Token Queue Read Register-3 (Read Only). /
++	 *	Device Thresholding control register (Read/Write)
++	 * <i>Offset: 830h</i> */
++	volatile uint32_t dtknqr3_dthrctl;
++	/** Device IN Token Queue Read Register-4 (Read Only). /
++	 *	Device IN EPs empty Inr. Mask Register (Read/Write)
++	 * <i>Offset: 834h</i> */
++	volatile uint32_t dtknqr4_fifoemptymsk;
++	/** Device Each Endpoint Interrupt Register (Read Only). /
++	 * <i>Offset: 838h</i> */
++	volatile uint32_t deachint;
++	/** Device Each Endpoint Interrupt mask Register (Read/Write). /
++	 * <i>Offset: 83Ch</i> */
++	volatile uint32_t deachintmsk;
++	/** Device Each In Endpoint Interrupt mask Register (Read/Write). /
++	 * <i>Offset: 840h</i> */
++	volatile uint32_t diepeachintmsk[MAX_EPS_CHANNELS];
++	/** Device Each Out Endpoint Interrupt mask Register (Read/Write). /
++	 * <i>Offset: 880h</i> */
++	volatile uint32_t doepeachintmsk[MAX_EPS_CHANNELS];
++} dwc_otg_device_global_regs_t;
++
++/**
++ * This union represents the bit fields in the Device Configuration
++ * Register.  Read the register into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.  Write the
++ * <i>d32</i> member to the dcfg register.
++ */
++typedef union dcfg_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Device Speed */
++		unsigned devspd:2;
++		/** Non Zero Length Status OUT Handshake */
++		unsigned nzstsouthshk:1;
++#define DWC_DCFG_SEND_STALL 1
++
++		unsigned ena32khzs:1;
++		/** Device Addresses */
++		unsigned devaddr:7;
++		/** Periodic Frame Interval */
++		unsigned perfrint:2;
++#define DWC_DCFG_FRAME_INTERVAL_80 0
++#define DWC_DCFG_FRAME_INTERVAL_85 1
++#define DWC_DCFG_FRAME_INTERVAL_90 2
++#define DWC_DCFG_FRAME_INTERVAL_95 3
++
++		/** Enable Device OUT NAK for bulk in DDMA mode */
++		unsigned endevoutnak:1;
++
++		unsigned reserved14_17:4;
++		/** In Endpoint Mis-match count */
++		unsigned epmscnt:5;
++		/** Enable Descriptor DMA in Device mode */
++		unsigned descdma:1;
++		unsigned perschintvl:2;
++		unsigned resvalid:6;
++	} b;
++} dcfg_data_t;
++
++/**
++ * This union represents the bit fields in the Device Control
++ * Register.  Read the register into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.
++ */
++typedef union dctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Remote Wakeup */
++		unsigned rmtwkupsig:1;
++		/** Soft Disconnect */
++		unsigned sftdiscon:1;
++		/** Global Non-Periodic IN NAK Status */
++		unsigned gnpinnaksts:1;
++		/** Global OUT NAK Status */
++		unsigned goutnaksts:1;
++		/** Test Control */
++		unsigned tstctl:3;
++		/** Set Global Non-Periodic IN NAK */
++		unsigned sgnpinnak:1;
++		/** Clear Global Non-Periodic IN NAK */
++		unsigned cgnpinnak:1;
++		/** Set Global OUT NAK */
++		unsigned sgoutnak:1;
++		/** Clear Global OUT NAK */
++		unsigned cgoutnak:1;
++		/** Power-On Programming Done */
++		unsigned pwronprgdone:1;
++		/** Reserved */
++		unsigned reserved:1;
++		/** Global Multi Count */
++		unsigned gmc:2;
++		/** Ignore Frame Number for ISOC EPs */
++		unsigned ifrmnum:1;
++		/** NAK on Babble */
++		unsigned nakonbble:1;
++		/** Enable Continue on BNA */
++		unsigned encontonbna:1;
++
++		unsigned reserved18_31:14;
++	} b;
++} dctl_data_t;
++
++/**
++ * This union represents the bit fields in the Device Status
++ * Register.  Read the register into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.
++ */
++typedef union dsts_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Suspend Status */
++		unsigned suspsts:1;
++		/** Enumerated Speed */
++		unsigned enumspd:2;
++#define DWC_DSTS_ENUMSPD_HS_PHY_30MHZ_OR_60MHZ 0
++#define DWC_DSTS_ENUMSPD_FS_PHY_30MHZ_OR_60MHZ 1
++#define DWC_DSTS_ENUMSPD_LS_PHY_6MHZ		   2
++#define DWC_DSTS_ENUMSPD_FS_PHY_48MHZ		   3
++		/** Erratic Error */
++		unsigned errticerr:1;
++		unsigned reserved4_7:4;
++		/** Frame or Microframe Number of the received SOF */
++		unsigned soffn:14;
++		unsigned reserved22_31:10;
++	} b;
++} dsts_data_t;
++
++/**
++ * This union represents the bit fields in the Device IN EP Interrupt
++ * Register and the Device IN EP Common Mask Register.
++ *
++ * - Read the register into the <i>d32</i> member then set/clear the
++ *	 bits using the <i>b</i>it elements.
++ */
++typedef union diepint_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Transfer complete mask */
++		unsigned xfercompl:1;
++		/** Endpoint disable mask */
++		unsigned epdisabled:1;
++		/** AHB Error mask */
++		unsigned ahberr:1;
++		/** TimeOUT Handshake mask (non-ISOC EPs) */
++		unsigned timeout:1;
++		/** IN Token received with TxF Empty mask */
++		unsigned intktxfemp:1;
++		/** IN Token Received with EP mismatch mask */
++		unsigned intknepmis:1;
++		/** IN Endpoint NAK Effective mask */
++		unsigned inepnakeff:1;
++		/** Reserved */
++		unsigned emptyintr:1;
++
++		unsigned txfifoundrn:1;
++
++		/** BNA Interrupt mask */
++		unsigned bna:1;
++
++		unsigned reserved10_12:3;
++		/** BNA Interrupt mask */
++		unsigned nak:1;
++
++		unsigned reserved14_31:18;
++	} b;
++} diepint_data_t;
++
++/**
++ * This union represents the bit fields in the Device IN EP
++ * Common/Dedicated Interrupt Mask Register.
++ */
++typedef union diepint_data diepmsk_data_t;
++
++/**
++ * This union represents the bit fields in the Device OUT EP Interrupt
++ * Registerand Device OUT EP Common Interrupt Mask Register.
++ *
++ * - Read the register into the <i>d32</i> member then set/clear the
++ *	 bits using the <i>b</i>it elements.
++ */
++typedef union doepint_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Transfer complete */
++		unsigned xfercompl:1;
++		/** Endpoint disable  */
++		unsigned epdisabled:1;
++		/** AHB Error */
++		unsigned ahberr:1;
++		/** Setup Phase Done (contorl EPs) */
++		unsigned setup:1;
++		/** OUT Token Received when Endpoint Disabled */
++		unsigned outtknepdis:1;
++
++		unsigned stsphsercvd:1;
++		/** Back-to-Back SETUP Packets Received */
++		unsigned back2backsetup:1;
++
++		unsigned reserved7:1;
++		/** OUT packet Error */
++		unsigned outpkterr:1;
++		/** BNA Interrupt */
++		unsigned bna:1;
++
++		unsigned reserved10:1;
++		/** Packet Drop Status */
++		unsigned pktdrpsts:1;
++		/** Babble Interrupt */
++		unsigned babble:1;
++		/** NAK Interrupt */
++		unsigned nak:1;
++		/** NYET Interrupt */
++		unsigned nyet:1;
++		/** Bit indicating setup packet received */
++		unsigned sr:1;
++
++		unsigned reserved16_31:16;
++	} b;
++} doepint_data_t;
++
++/**
++ * This union represents the bit fields in the Device OUT EP
++ * Common/Dedicated Interrupt Mask Register.
++ */
++typedef union doepint_data doepmsk_data_t;
++
++/**
++ * This union represents the bit fields in the Device All EP Interrupt
++ * and Mask Registers.
++ * - Read the register into the <i>d32</i> member then set/clear the
++ *	 bits using the <i>b</i>it elements.
++ */
++typedef union daint_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** IN Endpoint bits */
++		unsigned in:16;
++		/** OUT Endpoint bits */
++		unsigned out:16;
++	} ep;
++	struct {
++		/** IN Endpoint bits */
++		unsigned inep0:1;
++		unsigned inep1:1;
++		unsigned inep2:1;
++		unsigned inep3:1;
++		unsigned inep4:1;
++		unsigned inep5:1;
++		unsigned inep6:1;
++		unsigned inep7:1;
++		unsigned inep8:1;
++		unsigned inep9:1;
++		unsigned inep10:1;
++		unsigned inep11:1;
++		unsigned inep12:1;
++		unsigned inep13:1;
++		unsigned inep14:1;
++		unsigned inep15:1;
++		/** OUT Endpoint bits */
++		unsigned outep0:1;
++		unsigned outep1:1;
++		unsigned outep2:1;
++		unsigned outep3:1;
++		unsigned outep4:1;
++		unsigned outep5:1;
++		unsigned outep6:1;
++		unsigned outep7:1;
++		unsigned outep8:1;
++		unsigned outep9:1;
++		unsigned outep10:1;
++		unsigned outep11:1;
++		unsigned outep12:1;
++		unsigned outep13:1;
++		unsigned outep14:1;
++		unsigned outep15:1;
++	} b;
++} daint_data_t;
++
++/**
++ * This union represents the bit fields in the Device IN Token Queue
++ * Read Registers.
++ * - Read the register into the <i>d32</i> member.
++ * - READ-ONLY Register
++ */
++typedef union dtknq1_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** In Token Queue Write Pointer */
++		unsigned intknwptr:5;
++		/** Reserved */
++		unsigned reserved05_06:2;
++		/** write pointer has wrapped. */
++		unsigned wrap_bit:1;
++		/** EP Numbers of IN Tokens 0 ... 4 */
++		unsigned epnums0_5:24;
++	} b;
++} dtknq1_data_t;
++
++/**
++ * This union represents Threshold control Register
++ * - Read and write the register into the <i>d32</i> member.
++ * - READ-WRITABLE Register
++ */
++typedef union dthrctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** non ISO Tx Thr. Enable */
++		unsigned non_iso_thr_en:1;
++		/** ISO Tx Thr. Enable */
++		unsigned iso_thr_en:1;
++		/** Tx Thr. Length */
++		unsigned tx_thr_len:9;
++		/** AHB Threshold ratio */
++		unsigned ahb_thr_ratio:2;
++		/** Reserved */
++		unsigned reserved13_15:3;
++		/** Rx Thr. Enable */
++		unsigned rx_thr_en:1;
++		/** Rx Thr. Length */
++		unsigned rx_thr_len:9;
++		unsigned reserved26:1;
++		/** Arbiter Parking Enable*/
++		unsigned arbprken:1;
++		/** Reserved */
++		unsigned reserved28_31:4;
++	} b;
++} dthrctl_data_t;
++
++/**
++ * Device Logical IN Endpoint-Specific Registers. <i>Offsets
++ * 900h-AFCh</i>
++ *
++ * There will be one set of endpoint registers per logical endpoint
++ * implemented.
++ *
++ * <i>These registers are visible only in Device mode and must not be
++ * accessed in Host mode, as the results are unknown.</i>
++ */
++typedef struct dwc_otg_dev_in_ep_regs {
++	/** Device IN Endpoint Control Register. <i>Offset:900h +
++	 * (ep_num * 20h) + 00h</i> */
++	volatile uint32_t diepctl;
++	/** Reserved. <i>Offset:900h + (ep_num * 20h) + 04h</i> */
++	uint32_t reserved04;
++	/** Device IN Endpoint Interrupt Register. <i>Offset:900h +
++	 * (ep_num * 20h) + 08h</i> */
++	volatile uint32_t diepint;
++	/** Reserved. <i>Offset:900h + (ep_num * 20h) + 0Ch</i> */
++	uint32_t reserved0C;
++	/** Device IN Endpoint Transfer Size
++	 * Register. <i>Offset:900h + (ep_num * 20h) + 10h</i> */
++	volatile uint32_t dieptsiz;
++	/** Device IN Endpoint DMA Address Register. <i>Offset:900h +
++	 * (ep_num * 20h) + 14h</i> */
++	volatile uint32_t diepdma;
++	/** Device IN Endpoint Transmit FIFO Status Register. <i>Offset:900h +
++	 * (ep_num * 20h) + 18h</i> */
++	volatile uint32_t dtxfsts;
++	/** Device IN Endpoint DMA Buffer Register. <i>Offset:900h +
++	 * (ep_num * 20h) + 1Ch</i> */
++	volatile uint32_t diepdmab;
++} dwc_otg_dev_in_ep_regs_t;
++
++/**
++ * Device Logical OUT Endpoint-Specific Registers. <i>Offsets:
++ * B00h-CFCh</i>
++ *
++ * There will be one set of endpoint registers per logical endpoint
++ * implemented.
++ *
++ * <i>These registers are visible only in Device mode and must not be
++ * accessed in Host mode, as the results are unknown.</i>
++ */
++typedef struct dwc_otg_dev_out_ep_regs {
++	/** Device OUT Endpoint Control Register. <i>Offset:B00h +
++	 * (ep_num * 20h) + 00h</i> */
++	volatile uint32_t doepctl;
++	/** Reserved. <i>Offset:B00h + (ep_num * 20h) + 04h</i> */
++	uint32_t reserved04;
++	/** Device OUT Endpoint Interrupt Register. <i>Offset:B00h +
++	 * (ep_num * 20h) + 08h</i> */
++	volatile uint32_t doepint;
++	/** Reserved. <i>Offset:B00h + (ep_num * 20h) + 0Ch</i> */
++	uint32_t reserved0C;
++	/** Device OUT Endpoint Transfer Size Register. <i>Offset:
++	 * B00h + (ep_num * 20h) + 10h</i> */
++	volatile uint32_t doeptsiz;
++	/** Device OUT Endpoint DMA Address Register. <i>Offset:B00h
++	 * + (ep_num * 20h) + 14h</i> */
++	volatile uint32_t doepdma;
++	/** Reserved. <i>Offset:B00h + 	 * (ep_num * 20h) + 18h</i> */
++	uint32_t unused;
++	/** Device OUT Endpoint DMA Buffer Register. <i>Offset:B00h
++	 * + (ep_num * 20h) + 1Ch</i> */
++	uint32_t doepdmab;
++} dwc_otg_dev_out_ep_regs_t;
++
++/**
++ * This union represents the bit fields in the Device EP Control
++ * Register.  Read the register into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.
++ */
++typedef union depctl_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Maximum Packet Size
++		 * IN/OUT EPn
++		 * IN/OUT EP0 - 2 bits
++		 *	 2'b00: 64 Bytes
++		 *	 2'b01: 32
++		 *	 2'b10: 16
++		 *	 2'b11: 8 */
++		unsigned mps:11;
++#define DWC_DEP0CTL_MPS_64	 0
++#define DWC_DEP0CTL_MPS_32	 1
++#define DWC_DEP0CTL_MPS_16	 2
++#define DWC_DEP0CTL_MPS_8	 3
++
++		/** Next Endpoint
++		 * IN EPn/IN EP0
++		 * OUT EPn/OUT EP0 - reserved */
++		unsigned nextep:4;
++
++		/** USB Active Endpoint */
++		unsigned usbactep:1;
++
++		/** Endpoint DPID (INTR/Bulk IN and OUT endpoints)
++		 * This field contains the PID of the packet going to
++		 * be received or transmitted on this endpoint. The
++		 * application should program the PID of the first
++		 * packet going to be received or transmitted on this
++		 * endpoint , after the endpoint is
++		 * activated. Application use the SetD1PID and
++		 * SetD0PID fields of this register to program either
++		 * D0 or D1 PID.
++		 *
++		 * The encoding for this field is
++		 *	 - 0: D0
++		 *	 - 1: D1
++		 */
++		unsigned dpid:1;
++
++		/** NAK Status */
++		unsigned naksts:1;
++
++		/** Endpoint Type
++		 *	2'b00: Control
++		 *	2'b01: Isochronous
++		 *	2'b10: Bulk
++		 *	2'b11: Interrupt */
++		unsigned eptype:2;
++
++		/** Snoop Mode
++		 * OUT EPn/OUT EP0
++		 * IN EPn/IN EP0 - reserved */
++		unsigned snp:1;
++
++		/** Stall Handshake */
++		unsigned stall:1;
++
++		/** Tx Fifo Number
++		 * IN EPn/IN EP0
++		 * OUT EPn/OUT EP0 - reserved */
++		unsigned txfnum:4;
++
++		/** Clear NAK */
++		unsigned cnak:1;
++		/** Set NAK */
++		unsigned snak:1;
++		/** Set DATA0 PID (INTR/Bulk IN and OUT endpoints)
++		 * Writing to this field sets the Endpoint DPID (DPID)
++		 * field in this register to DATA0. Set Even
++		 * (micro)frame (SetEvenFr) (ISO IN and OUT Endpoints)
++		 * Writing to this field sets the Even/Odd
++		 * (micro)frame (EO_FrNum) field to even (micro)
++		 * frame.
++		 */
++		unsigned setd0pid:1;
++		/** Set DATA1 PID (INTR/Bulk IN and OUT endpoints)
++		 * Writing to this field sets the Endpoint DPID (DPID)
++		 * field in this register to DATA1 Set Odd
++		 * (micro)frame (SetOddFr) (ISO IN and OUT Endpoints)
++		 * Writing to this field sets the Even/Odd
++		 * (micro)frame (EO_FrNum) field to odd (micro) frame.
++		 */
++		unsigned setd1pid:1;
++
++		/** Endpoint Disable */
++		unsigned epdis:1;
++		/** Endpoint Enable */
++		unsigned epena:1;
++	} b;
++} depctl_data_t;
++
++/**
++ * This union represents the bit fields in the Device EP Transfer
++ * Size Register.  Read the register into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.
++ */
++typedef union deptsiz_data {
++		/** raw register data */
++	uint32_t d32;
++		/** register bits */
++	struct {
++		/** Transfer size */
++		unsigned xfersize:19;
++/** Max packet count for EP (pow(2,10)-1) */
++#define MAX_PKT_CNT 1023
++		/** Packet Count */
++		unsigned pktcnt:10;
++		/** Multi Count - Periodic IN endpoints */
++		unsigned mc:2;
++		unsigned reserved:1;
++	} b;
++} deptsiz_data_t;
++
++/**
++ * This union represents the bit fields in the Device EP 0 Transfer
++ * Size Register.  Read the register into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.
++ */
++typedef union deptsiz0_data {
++		/** raw register data */
++	uint32_t d32;
++		/** register bits */
++	struct {
++		/** Transfer size */
++		unsigned xfersize:7;
++				/** Reserved */
++		unsigned reserved7_18:12;
++		/** Packet Count */
++		unsigned pktcnt:2;
++				/** Reserved */
++		unsigned reserved21_28:8;
++				/**Setup Packet Count (DOEPTSIZ0 Only) */
++		unsigned supcnt:2;
++		unsigned reserved31;
++	} b;
++} deptsiz0_data_t;
++
++/////////////////////////////////////////////////
++// DMA Descriptor Specific Structures
++//
++
++/** Buffer status definitions */
++
++#define BS_HOST_READY	0x0
++#define BS_DMA_BUSY		0x1
++#define BS_DMA_DONE		0x2
++#define BS_HOST_BUSY	0x3
++
++/** Receive/Transmit status definitions */
++
++#define RTS_SUCCESS		0x0
++#define RTS_BUFFLUSH	0x1
++#define RTS_RESERVED	0x2
++#define RTS_BUFERR		0x3
++
++/**
++ * This union represents the bit fields in the DMA Descriptor
++ * status quadlet. Read the quadlet into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it, <i>b_iso_out</i> and
++ * <i>b_iso_in</i> elements.
++ */
++typedef union dev_dma_desc_sts {
++		/** raw register data */
++	uint32_t d32;
++		/** quadlet bits */
++	struct {
++		/** Received number of bytes */
++		unsigned bytes:16;
++		/** NAK bit - only for OUT EPs */
++		unsigned nak:1;
++		unsigned reserved17_22:6;
++		/** Multiple Transfer - only for OUT EPs */
++		unsigned mtrf:1;
++		/** Setup Packet received - only for OUT EPs */
++		unsigned sr:1;
++		/** Interrupt On Complete */
++		unsigned ioc:1;
++		/** Short Packet */
++		unsigned sp:1;
++		/** Last */
++		unsigned l:1;
++		/** Receive Status */
++		unsigned sts:2;
++		/** Buffer Status */
++		unsigned bs:2;
++	} b;
++
++//#ifdef DWC_EN_ISOC
++		/** iso out quadlet bits */
++	struct {
++		/** Received number of bytes */
++		unsigned rxbytes:11;
++
++		unsigned reserved11:1;
++		/** Frame Number */
++		unsigned framenum:11;
++		/** Received ISO Data PID */
++		unsigned pid:2;
++		/** Interrupt On Complete */
++		unsigned ioc:1;
++		/** Short Packet */
++		unsigned sp:1;
++		/** Last */
++		unsigned l:1;
++		/** Receive Status */
++		unsigned rxsts:2;
++		/** Buffer Status */
++		unsigned bs:2;
++	} b_iso_out;
++
++		/** iso in quadlet bits */
++	struct {
++		/** Transmited number of bytes */
++		unsigned txbytes:12;
++		/** Frame Number */
++		unsigned framenum:11;
++		/** Transmited ISO Data PID */
++		unsigned pid:2;
++		/** Interrupt On Complete */
++		unsigned ioc:1;
++		/** Short Packet */
++		unsigned sp:1;
++		/** Last */
++		unsigned l:1;
++		/** Transmit Status */
++		unsigned txsts:2;
++		/** Buffer Status */
++		unsigned bs:2;
++	} b_iso_in;
++//#endif                                /* DWC_EN_ISOC */
++} dev_dma_desc_sts_t;
++
++/**
++ * DMA Descriptor structure
++ *
++ * DMA Descriptor structure contains two quadlets:
++ * Status quadlet and Data buffer pointer.
++ */
++typedef struct dwc_otg_dev_dma_desc {
++	/** DMA Descriptor status quadlet */
++	dev_dma_desc_sts_t status;
++	/** DMA Descriptor data buffer pointer */
++	uint32_t buf;
++} dwc_otg_dev_dma_desc_t;
++
++/**
++ * The dwc_otg_dev_if structure contains information needed to manage
++ * the DWC_otg controller acting in device mode. It represents the
++ * programming view of the device-specific aspects of the controller.
++ */
++typedef struct dwc_otg_dev_if {
++	/** Pointer to device Global registers.
++	 * Device Global Registers starting at offset 800h
++	 */
++	dwc_otg_device_global_regs_t *dev_global_regs;
++#define DWC_DEV_GLOBAL_REG_OFFSET 0x800
++
++	/**
++	 * Device Logical IN Endpoint-Specific Registers 900h-AFCh
++	 */
++	dwc_otg_dev_in_ep_regs_t *in_ep_regs[MAX_EPS_CHANNELS];
++#define DWC_DEV_IN_EP_REG_OFFSET 0x900
++#define DWC_EP_REG_OFFSET 0x20
++
++	/** Device Logical OUT Endpoint-Specific Registers B00h-CFCh */
++	dwc_otg_dev_out_ep_regs_t *out_ep_regs[MAX_EPS_CHANNELS];
++#define DWC_DEV_OUT_EP_REG_OFFSET 0xB00
++
++	/* Device configuration information */
++	uint8_t speed;				 /**< Device Speed	0: Unknown, 1: LS, 2:FS, 3: HS */
++	uint8_t num_in_eps;		 /**< Number # of Tx EP range: 0-15 exept ep0 */
++	uint8_t num_out_eps;		 /**< Number # of Rx EP range: 0-15 exept ep 0*/
++
++	/** Size of periodic FIFOs (Bytes) */
++	uint16_t perio_tx_fifo_size[MAX_PERIO_FIFOS];
++
++	/** Size of Tx FIFOs (Bytes) */
++	uint16_t tx_fifo_size[MAX_TX_FIFOS];
++
++	/** Thresholding enable flags and length varaiables **/
++	uint16_t rx_thr_en;
++	uint16_t iso_tx_thr_en;
++	uint16_t non_iso_tx_thr_en;
++
++	uint16_t rx_thr_length;
++	uint16_t tx_thr_length;
++
++	/**
++	 * Pointers to the DMA Descriptors for EP0 Control
++	 * transfers (virtual and physical)
++	 */
++
++	/** 2 descriptors for SETUP packets */
++	dwc_dma_t dma_setup_desc_addr[2];
++	dwc_otg_dev_dma_desc_t *setup_desc_addr[2];
++
++	/** Pointer to Descriptor with latest SETUP packet */
++	dwc_otg_dev_dma_desc_t *psetup;
++
++	/** Index of current SETUP handler descriptor */
++	uint32_t setup_desc_index;
++
++	/** Descriptor for Data In or Status In phases */
++	dwc_dma_t dma_in_desc_addr;
++	dwc_otg_dev_dma_desc_t *in_desc_addr;
++
++	/** Descriptor for Data Out or Status Out phases */
++	dwc_dma_t dma_out_desc_addr;
++	dwc_otg_dev_dma_desc_t *out_desc_addr;
++
++	/** Setup Packet Detected - if set clear NAK when queueing */
++	uint32_t spd;
++	/** Isoc ep pointer on which incomplete happens */
++	void *isoc_ep;
++
++} dwc_otg_dev_if_t;
++
++/////////////////////////////////////////////////
++// Host Mode Register Structures
++//
++/**
++ * The Host Global Registers structure defines the size and relative
++ * field offsets for the Host Mode Global Registers.  Host Global
++ * Registers offsets 400h-7FFh.
++*/
++typedef struct dwc_otg_host_global_regs {
++	/** Host Configuration Register.   <i>Offset: 400h</i> */
++	volatile uint32_t hcfg;
++	/** Host Frame Interval Register.	<i>Offset: 404h</i> */
++	volatile uint32_t hfir;
++	/** Host Frame Number / Frame Remaining Register. <i>Offset: 408h</i> */
++	volatile uint32_t hfnum;
++	/** Reserved.	<i>Offset: 40Ch</i> */
++	uint32_t reserved40C;
++	/** Host Periodic Transmit FIFO/ Queue Status Register. <i>Offset: 410h</i> */
++	volatile uint32_t hptxsts;
++	/** Host All Channels Interrupt Register. <i>Offset: 414h</i> */
++	volatile uint32_t haint;
++	/** Host All Channels Interrupt Mask Register. <i>Offset: 418h</i> */
++	volatile uint32_t haintmsk;
++	/** Host Frame List Base Address Register . <i>Offset: 41Ch</i> */
++	volatile uint32_t hflbaddr;
++} dwc_otg_host_global_regs_t;
++
++/**
++ * This union represents the bit fields in the Host Configuration Register.
++ * Read the register into the <i>d32</i> member then set/clear the bits using
++ * the <i>b</i>it elements. Write the <i>d32</i> member to the hcfg register.
++ */
++typedef union hcfg_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		/** FS/LS Phy Clock Select */
++		unsigned fslspclksel:2;
++#define DWC_HCFG_30_60_MHZ 0
++#define DWC_HCFG_48_MHZ	   1
++#define DWC_HCFG_6_MHZ	   2
++
++		/** FS/LS Only Support */
++		unsigned fslssupp:1;
++		unsigned reserved3_6:4;
++		/** Enable 32-KHz Suspend Mode */
++		unsigned ena32khzs:1;
++		/** Resume Validation Periiod */
++		unsigned resvalid:8;
++		unsigned reserved16_22:7;
++		/** Enable Scatter/gather DMA in Host mode */
++		unsigned descdma:1;
++		/** Frame List Entries */
++		unsigned frlisten:2;
++		/** Enable Periodic Scheduling */
++		unsigned perschedena:1;
++		unsigned reserved27_30:4;
++		unsigned modechtimen:1;
++	} b;
++} hcfg_data_t;
++
++/**
++ * This union represents the bit fields in the Host Frame Remaing/Number
++ * Register.
++ */
++typedef union hfir_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		unsigned frint:16;
++		unsigned hfirrldctrl:1;
++		unsigned reserved:15;
++	} b;
++} hfir_data_t;
++
++/**
++ * This union represents the bit fields in the Host Frame Remaing/Number
++ * Register.
++ */
++typedef union hfnum_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		unsigned frnum:16;
++#define DWC_HFNUM_MAX_FRNUM 0x3FFF
++		unsigned frrem:16;
++	} b;
++} hfnum_data_t;
++
++typedef union hptxsts_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		unsigned ptxfspcavail:16;
++		unsigned ptxqspcavail:8;
++		/** Top of the Periodic Transmit Request Queue
++		 *	- bit 24 - Terminate (last entry for the selected channel)
++		 *	- bits 26:25 - Token Type
++		 *	  - 2'b00 - Zero length
++		 *	  - 2'b01 - Ping
++		 *	  - 2'b10 - Disable
++		 *	- bits 30:27 - Channel Number
++		 *	- bit 31 - Odd/even microframe
++		 */
++		unsigned ptxqtop_terminate:1;
++		unsigned ptxqtop_token:2;
++		unsigned ptxqtop_chnum:4;
++		unsigned ptxqtop_odd:1;
++	} b;
++} hptxsts_data_t;
++
++/**
++ * This union represents the bit fields in the Host Port Control and Status
++ * Register. Read the register into the <i>d32</i> member then set/clear the
++ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
++ * hprt0 register.
++ */
++typedef union hprt0_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned prtconnsts:1;
++		unsigned prtconndet:1;
++		unsigned prtena:1;
++		unsigned prtenchng:1;
++		unsigned prtovrcurract:1;
++		unsigned prtovrcurrchng:1;
++		unsigned prtres:1;
++		unsigned prtsusp:1;
++		unsigned prtrst:1;
++		unsigned reserved9:1;
++		unsigned prtlnsts:2;
++		unsigned prtpwr:1;
++		unsigned prttstctl:4;
++		unsigned prtspd:2;
++#define DWC_HPRT0_PRTSPD_HIGH_SPEED 0
++#define DWC_HPRT0_PRTSPD_FULL_SPEED 1
++#define DWC_HPRT0_PRTSPD_LOW_SPEED	2
++		unsigned reserved19_31:13;
++	} b;
++} hprt0_data_t;
++
++/**
++ * This union represents the bit fields in the Host All Interrupt
++ * Register.
++ */
++typedef union haint_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned ch0:1;
++		unsigned ch1:1;
++		unsigned ch2:1;
++		unsigned ch3:1;
++		unsigned ch4:1;
++		unsigned ch5:1;
++		unsigned ch6:1;
++		unsigned ch7:1;
++		unsigned ch8:1;
++		unsigned ch9:1;
++		unsigned ch10:1;
++		unsigned ch11:1;
++		unsigned ch12:1;
++		unsigned ch13:1;
++		unsigned ch14:1;
++		unsigned ch15:1;
++		unsigned reserved:16;
++	} b;
++
++	struct {
++		unsigned chint:16;
++		unsigned reserved:16;
++	} b2;
++} haint_data_t;
++
++/**
++ * This union represents the bit fields in the Host All Interrupt
++ * Register.
++ */
++typedef union haintmsk_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned ch0:1;
++		unsigned ch1:1;
++		unsigned ch2:1;
++		unsigned ch3:1;
++		unsigned ch4:1;
++		unsigned ch5:1;
++		unsigned ch6:1;
++		unsigned ch7:1;
++		unsigned ch8:1;
++		unsigned ch9:1;
++		unsigned ch10:1;
++		unsigned ch11:1;
++		unsigned ch12:1;
++		unsigned ch13:1;
++		unsigned ch14:1;
++		unsigned ch15:1;
++		unsigned reserved:16;
++	} b;
++
++	struct {
++		unsigned chint:16;
++		unsigned reserved:16;
++	} b2;
++} haintmsk_data_t;
++
++/**
++ * Host Channel Specific Registers. <i>500h-5FCh</i>
++ */
++typedef struct dwc_otg_hc_regs {
++	/** Host Channel 0 Characteristic Register. <i>Offset: 500h + (chan_num * 20h) + 00h</i> */
++	volatile uint32_t hcchar;
++	/** Host Channel 0 Split Control Register. <i>Offset: 500h + (chan_num * 20h) + 04h</i> */
++	volatile uint32_t hcsplt;
++	/** Host Channel 0 Interrupt Register. <i>Offset: 500h + (chan_num * 20h) + 08h</i> */
++	volatile uint32_t hcint;
++	/** Host Channel 0 Interrupt Mask Register. <i>Offset: 500h + (chan_num * 20h) + 0Ch</i> */
++	volatile uint32_t hcintmsk;
++	/** Host Channel 0 Transfer Size Register. <i>Offset: 500h + (chan_num * 20h) + 10h</i> */
++	volatile uint32_t hctsiz;
++	/** Host Channel 0 DMA Address Register. <i>Offset: 500h + (chan_num * 20h) + 14h</i> */
++	volatile uint32_t hcdma;
++	volatile uint32_t reserved;
++	/** Host Channel 0 DMA Buffer Address Register. <i>Offset: 500h + (chan_num * 20h) + 1Ch</i> */
++	volatile uint32_t hcdmab;
++} dwc_otg_hc_regs_t;
++
++/**
++ * This union represents the bit fields in the Host Channel Characteristics
++ * Register. Read the register into the <i>d32</i> member then set/clear the
++ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
++ * hcchar register.
++ */
++typedef union hcchar_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		/** Maximum packet size in bytes */
++		unsigned mps:11;
++
++		/** Endpoint number */
++		unsigned epnum:4;
++
++		/** 0: OUT, 1: IN */
++		unsigned epdir:1;
++
++		unsigned reserved:1;
++
++		/** 0: Full/high speed device, 1: Low speed device */
++		unsigned lspddev:1;
++
++		/** 0: Control, 1: Isoc, 2: Bulk, 3: Intr */
++		unsigned eptype:2;
++
++		/** Packets per frame for periodic transfers. 0 is reserved. */
++		unsigned multicnt:2;
++
++		/** Device address */
++		unsigned devaddr:7;
++
++		/**
++		 * Frame to transmit periodic transaction.
++		 * 0: even, 1: odd
++		 */
++		unsigned oddfrm:1;
++
++		/** Channel disable */
++		unsigned chdis:1;
++
++		/** Channel enable */
++		unsigned chen:1;
++	} b;
++} hcchar_data_t;
++
++typedef union hcsplt_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		/** Port Address */
++		unsigned prtaddr:7;
++
++		/** Hub Address */
++		unsigned hubaddr:7;
++
++		/** Transaction Position */
++		unsigned xactpos:2;
++#define DWC_HCSPLIT_XACTPOS_MID 0
++#define DWC_HCSPLIT_XACTPOS_END 1
++#define DWC_HCSPLIT_XACTPOS_BEGIN 2
++#define DWC_HCSPLIT_XACTPOS_ALL 3
++
++		/** Do Complete Split */
++		unsigned compsplt:1;
++
++		/** Reserved */
++		unsigned reserved:14;
++
++		/** Split Enble */
++		unsigned spltena:1;
++	} b;
++} hcsplt_data_t;
++
++/**
++ * This union represents the bit fields in the Host All Interrupt
++ * Register.
++ */
++typedef union hcint_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** Transfer Complete */
++		unsigned xfercomp:1;
++		/** Channel Halted */
++		unsigned chhltd:1;
++		/** AHB Error */
++		unsigned ahberr:1;
++		/** STALL Response Received */
++		unsigned stall:1;
++		/** NAK Response Received */
++		unsigned nak:1;
++		/** ACK Response Received */
++		unsigned ack:1;
++		/** NYET Response Received */
++		unsigned nyet:1;
++		/** Transaction Err */
++		unsigned xacterr:1;
++		/** Babble Error */
++		unsigned bblerr:1;
++		/** Frame Overrun */
++		unsigned frmovrun:1;
++		/** Data Toggle Error */
++		unsigned datatglerr:1;
++		/** Buffer Not Available (only for DDMA mode) */
++		unsigned bna:1;
++		/** Exessive transaction error (only for DDMA mode) */
++		unsigned xcs_xact:1;
++		/** Frame List Rollover interrupt */
++		unsigned frm_list_roll:1;
++		/** Reserved */
++		unsigned reserved14_31:18;
++	} b;
++} hcint_data_t;
++
++/**
++ * This union represents the bit fields in the Host Channel Interrupt Mask
++ * Register. Read the register into the <i>d32</i> member then set/clear the
++ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
++ * hcintmsk register.
++ */
++typedef union hcintmsk_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		unsigned xfercompl:1;
++		unsigned chhltd:1;
++		unsigned ahberr:1;
++		unsigned stall:1;
++		unsigned nak:1;
++		unsigned ack:1;
++		unsigned nyet:1;
++		unsigned xacterr:1;
++		unsigned bblerr:1;
++		unsigned frmovrun:1;
++		unsigned datatglerr:1;
++		unsigned bna:1;
++		unsigned xcs_xact:1;
++		unsigned frm_list_roll:1;
++		unsigned reserved14_31:18;
++	} b;
++} hcintmsk_data_t;
++
++/**
++ * This union represents the bit fields in the Host Channel Transfer Size
++ * Register. Read the register into the <i>d32</i> member then set/clear the
++ * bits using the <i>b</i>it elements. Write the <i>d32</i> member to the
++ * hcchar register.
++ */
++
++typedef union hctsiz_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		/** Total transfer size in bytes */
++		unsigned xfersize:19;
++
++		/** Data packets to transfer */
++		unsigned pktcnt:10;
++
++		/**
++		 * Packet ID for next data packet
++		 * 0: DATA0
++		 * 1: DATA2
++		 * 2: DATA1
++		 * 3: MDATA (non-Control), SETUP (Control)
++		 */
++		unsigned pid:2;
++#define DWC_HCTSIZ_DATA0 0
++#define DWC_HCTSIZ_DATA1 2
++#define DWC_HCTSIZ_DATA2 1
++#define DWC_HCTSIZ_MDATA 3
++#define DWC_HCTSIZ_SETUP 3
++
++		/** Do PING protocol when 1 */
++		unsigned dopng:1;
++	} b;
++
++	/** register bits */
++	struct {
++		/** Scheduling information */
++		unsigned schinfo:8;
++
++		/** Number of transfer descriptors.
++		 * Max value:
++		 * 64 in general,
++		 * 256 only for HS isochronous endpoint.
++		 */
++		unsigned ntd:8;
++
++		/** Data packets to transfer */
++		unsigned reserved16_28:13;
++
++		/**
++		 * Packet ID for next data packet
++		 * 0: DATA0
++		 * 1: DATA2
++		 * 2: DATA1
++		 * 3: MDATA (non-Control)
++		 */
++		unsigned pid:2;
++
++		/** Do PING protocol when 1 */
++		unsigned dopng:1;
++	} b_ddma;
++} hctsiz_data_t;
++
++/**
++ * This union represents the bit fields in the Host DMA Address
++ * Register used in Descriptor DMA mode.
++ */
++typedef union hcdma_data {
++	/** raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		unsigned reserved0_2:3;
++		/** Current Transfer Descriptor. Not used for ISOC */
++		unsigned ctd:8;
++		/** Start Address of Descriptor List */
++		unsigned dma_addr:21;
++	} b;
++} hcdma_data_t;
++
++/**
++ * This union represents the bit fields in the DMA Descriptor
++ * status quadlet for host mode. Read the quadlet into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.
++ */
++typedef union host_dma_desc_sts {
++	/** raw register data */
++	uint32_t d32;
++	/** quadlet bits */
++
++	/* for non-isochronous  */
++	struct {
++		/** Number of bytes */
++		unsigned n_bytes:17;
++		/** QTD offset to jump when Short Packet received - only for IN EPs */
++		unsigned qtd_offset:6;
++		/**
++		 * Set to request the core to jump to alternate QTD if
++		 * Short Packet received - only for IN EPs
++		 */
++		unsigned a_qtd:1;
++		 /**
++		  * Setup Packet bit. When set indicates that buffer contains
++		  * setup packet.
++		  */
++		unsigned sup:1;
++		/** Interrupt On Complete */
++		unsigned ioc:1;
++		/** End of List */
++		unsigned eol:1;
++		unsigned reserved27:1;
++		/** Rx/Tx Status */
++		unsigned sts:2;
++#define DMA_DESC_STS_PKTERR	1
++		unsigned reserved30:1;
++		/** Active Bit */
++		unsigned a:1;
++	} b;
++	/* for isochronous */
++	struct {
++		/** Number of bytes */
++		unsigned n_bytes:12;
++		unsigned reserved12_24:13;
++		/** Interrupt On Complete */
++		unsigned ioc:1;
++		unsigned reserved26_27:2;
++		/** Rx/Tx Status */
++		unsigned sts:2;
++		unsigned reserved30:1;
++		/** Active Bit */
++		unsigned a:1;
++	} b_isoc;
++} host_dma_desc_sts_t;
++
++#define	MAX_DMA_DESC_SIZE		131071
++#define MAX_DMA_DESC_NUM_GENERIC	64
++#define MAX_DMA_DESC_NUM_HS_ISOC	256
++#define MAX_FRLIST_EN_NUM		64
++/**
++ * Host-mode DMA Descriptor structure
++ *
++ * DMA Descriptor structure contains two quadlets:
++ * Status quadlet and Data buffer pointer.
++ */
++typedef struct dwc_otg_host_dma_desc {
++	/** DMA Descriptor status quadlet */
++	host_dma_desc_sts_t status;
++	/** DMA Descriptor data buffer pointer */
++	uint32_t buf;
++} dwc_otg_host_dma_desc_t;
++
++/** OTG Host Interface Structure.
++ *
++ * The OTG Host Interface Structure structure contains information
++ * needed to manage the DWC_otg controller acting in host mode. It
++ * represents the programming view of the host-specific aspects of the
++ * controller.
++ */
++typedef struct dwc_otg_host_if {
++	/** Host Global Registers starting at offset 400h.*/
++	dwc_otg_host_global_regs_t *host_global_regs;
++#define DWC_OTG_HOST_GLOBAL_REG_OFFSET 0x400
++
++	/** Host Port 0 Control and Status Register */
++	volatile uint32_t *hprt0;
++#define DWC_OTG_HOST_PORT_REGS_OFFSET 0x440
++
++	/** Host Channel Specific Registers at offsets 500h-5FCh. */
++	dwc_otg_hc_regs_t *hc_regs[MAX_EPS_CHANNELS];
++#define DWC_OTG_HOST_CHAN_REGS_OFFSET 0x500
++#define DWC_OTG_CHAN_REGS_OFFSET 0x20
++
++	/* Host configuration information */
++	/** Number of Host Channels (range: 1-16) */
++	uint8_t num_host_channels;
++	/** Periodic EPs supported (0: no, 1: yes) */
++	uint8_t perio_eps_supported;
++	/** Periodic Tx FIFO Size (Only 1 host periodic Tx FIFO) */
++	uint16_t perio_tx_fifo_size;
++
++} dwc_otg_host_if_t;
++
++/**
++ * This union represents the bit fields in the Power and Clock Gating Control
++ * Register. Read the register into the <i>d32</i> member then set/clear the
++ * bits using the <i>b</i>it elements.
++ */
++typedef union pcgcctl_data {
++	/** raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		/** Stop Pclk */
++		unsigned stoppclk:1;
++		/** Gate Hclk */
++		unsigned gatehclk:1;
++		/** Power Clamp */
++		unsigned pwrclmp:1;
++		/** Reset Power Down Modules */
++		unsigned rstpdwnmodule:1;
++		/** Reserved */
++		unsigned reserved:1;
++		/** Enable Sleep Clock Gating (Enbl_L1Gating) */
++		unsigned enbl_sleep_gating:1;
++		/** PHY In Sleep (PhySleep) */
++		unsigned phy_in_sleep:1;
++		/** Deep Sleep*/
++		unsigned deep_sleep:1;
++		unsigned resetaftsusp:1;
++		unsigned restoremode:1;
++		unsigned enbl_extnd_hiber:1;
++		unsigned extnd_hiber_pwrclmp:1;
++		unsigned extnd_hiber_switch:1;
++		unsigned ess_reg_restored:1;
++		unsigned prt_clk_sel:2;
++		unsigned port_power:1;
++		unsigned max_xcvrselect:2;
++		unsigned max_termsel:1;
++		unsigned mac_dev_addr:7;
++		unsigned p2hd_dev_enum_spd:2;
++		unsigned p2hd_prt_spd:2;
++		unsigned if_dev_mode:1;
++	} b;
++} pcgcctl_data_t;
++
++/**
++ * This union represents the bit fields in the Global Data FIFO Software
++ * Configuration Register. Read the register into the <i>d32</i> member then
++ * set/clear the bits using the <i>b</i>it elements.
++ */
++typedef union gdfifocfg_data {
++	/* raw register data */
++	uint32_t d32;
++	/** register bits */
++	struct {
++		/** OTG Data FIFO depth */
++		unsigned gdfifocfg:16;
++		/** Start address of EP info controller */
++		unsigned epinfobase:16;
++	} b;
++} gdfifocfg_data_t;
++
++/**
++ * This union represents the bit fields in the Global Power Down Register
++ * Register. Read the register into the <i>d32</i> member then set/clear the
++ * bits using the <i>b</i>it elements.
++ */
++typedef union gpwrdn_data {
++	/* raw register data */
++	uint32_t d32;
++
++	/** register bits */
++	struct {
++		/** PMU Interrupt Select */
++		unsigned pmuintsel:1;
++		/** PMU Active */
++		unsigned pmuactv:1;
++		/** Restore */
++		unsigned restore:1;
++		/** Power Down Clamp */
++		unsigned pwrdnclmp:1;
++		/** Power Down Reset */
++		unsigned pwrdnrstn:1;
++		/** Power Down Switch */
++		unsigned pwrdnswtch:1;
++		/** Disable VBUS */
++		unsigned dis_vbus:1;
++		/** Line State Change */
++		unsigned lnstschng:1;
++		/** Line state change mask */
++		unsigned lnstchng_msk:1;
++		/** Reset Detected */
++		unsigned rst_det:1;
++		/** Reset Detect mask */
++		unsigned rst_det_msk:1;
++		/** Disconnect Detected */
++		unsigned disconn_det:1;
++		/** Disconnect Detect mask */
++		unsigned disconn_det_msk:1;
++		/** Connect Detected*/
++		unsigned connect_det:1;
++		/** Connect Detected Mask*/
++		unsigned connect_det_msk:1;
++		/** SRP Detected */
++		unsigned srp_det:1;
++		/** SRP Detect mask */
++		unsigned srp_det_msk:1;
++		/** Status Change Interrupt */
++		unsigned sts_chngint:1;
++		/** Status Change Interrupt Mask */
++		unsigned sts_chngint_msk:1;
++		/** Line State */
++		unsigned linestate:2;
++		/** Indicates current mode(status of IDDIG signal) */
++		unsigned idsts:1;
++		/** B Session Valid signal status*/
++		unsigned bsessvld:1;
++		/** ADP Event Detected */
++		unsigned adp_int:1;
++		/** Multi Valued ID pin */
++		unsigned mult_val_id_bc:5;
++		/** Reserved 24_31 */
++		unsigned reserved29_31:3;
++	} b;
++} gpwrdn_data_t;
++
++#endif
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/test/Makefile
+@@ -0,0 +1,16 @@
++
++PERL=/usr/bin/perl
++PL_TESTS=test_sysfs.pl test_mod_param.pl
++
++.PHONY : test
++test : perl_tests
++
++perl_tests :
++	@echo
++	@echo Running perl tests
++	@for test in $(PL_TESTS); do \
++	  if $(PERL) ./$$test ; then \
++	    echo "=======> $$test, PASSED" ; \
++	  else echo "=======> $$test, FAILED" ; \
++	  fi \
++	done
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/test/dwc_otg_test.pm
+@@ -0,0 +1,337 @@
++package dwc_otg_test;
++
++use strict;
++use Exporter ();
++
++use vars qw(@ISA @EXPORT
++$sysfsdir $paramdir $errors $params
++);
++
++@ISA = qw(Exporter);
++
++#
++# Globals
++#
++$sysfsdir = "/sys/devices/lm0";
++$paramdir = "/sys/module/dwc_otg";
++$errors = 0;
++
++$params = [
++	   {
++	    NAME => "otg_cap",
++	    DEFAULT => 0,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 2
++	   },
++	   {
++	    NAME => "dma_enable",
++	    DEFAULT => 0,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 1
++	   },
++	   {
++	    NAME => "dma_burst_size",
++	    DEFAULT => 32,
++	    ENUM => [1, 4, 8, 16, 32, 64, 128, 256],
++	    LOW => 1,
++	    HIGH => 256
++	   },
++	   {
++	    NAME => "host_speed",
++	    DEFAULT => 0,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 1
++	   },
++	   {
++	    NAME => "host_support_fs_ls_low_power",
++	    DEFAULT => 0,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 1
++	   },
++	   {
++	    NAME => "host_ls_low_power_phy_clk",
++	    DEFAULT => 0,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 1
++	   },
++	   {
++	    NAME => "dev_speed",
++	    DEFAULT => 0,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 1
++	   },
++	   {
++	    NAME => "enable_dynamic_fifo",
++	    DEFAULT => 1,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 1
++	   },
++	   {
++	    NAME => "data_fifo_size",
++	    DEFAULT => 8192,
++	    ENUM => [],
++	    LOW => 32,
++	    HIGH => 32768
++	   },
++	   {
++	    NAME => "dev_rx_fifo_size",
++	    DEFAULT => 1064,
++	    ENUM => [],
++	    LOW => 16,
++	    HIGH => 32768
++	   },
++	   {
++	    NAME => "dev_nperio_tx_fifo_size",
++	    DEFAULT => 1024,
++	    ENUM => [],
++	    LOW => 16,
++	    HIGH => 32768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_1",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_2",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_3",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_4",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_5",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_6",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_7",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_8",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_9",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_10",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_11",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_12",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_13",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_14",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "dev_perio_tx_fifo_size_15",
++	    DEFAULT => 256,
++	    ENUM => [],
++	    LOW => 4,
++	    HIGH => 768
++	   },
++	   {
++	    NAME => "host_rx_fifo_size",
++	    DEFAULT => 1024,
++	    ENUM => [],
++	    LOW => 16,
++	    HIGH => 32768
++	   },
++	   {
++	    NAME => "host_nperio_tx_fifo_size",
++	    DEFAULT => 1024,
++	    ENUM => [],
++	    LOW => 16,
++	    HIGH => 32768
++	   },
++	   {
++	    NAME => "host_perio_tx_fifo_size",
++	    DEFAULT => 1024,
++	    ENUM => [],
++	    LOW => 16,
++	    HIGH => 32768
++	   },
++	   {
++	    NAME => "max_transfer_size",
++	    DEFAULT => 65535,
++	    ENUM => [],
++	    LOW => 2047,
++	    HIGH => 65535
++	   },
++	   {
++	    NAME => "max_packet_count",
++	    DEFAULT => 511,
++	    ENUM => [],
++	    LOW => 15,
++	    HIGH => 511
++	   },
++	   {
++	    NAME => "host_channels",
++	    DEFAULT => 12,
++	    ENUM => [],
++	    LOW => 1,
++	    HIGH => 16
++	   },
++	   {
++	    NAME => "dev_endpoints",
++	    DEFAULT => 6,
++	    ENUM => [],
++	    LOW => 1,
++	    HIGH => 15
++	   },
++	   {
++	    NAME => "phy_type",
++	    DEFAULT => 1,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 2
++	   },
++	   {
++	    NAME => "phy_utmi_width",
++	    DEFAULT => 16,
++	    ENUM => [8, 16],
++	    LOW => 8,
++	    HIGH => 16
++	   },
++	   {
++	    NAME => "phy_ulpi_ddr",
++	    DEFAULT => 0,
++	    ENUM => [],
++	    LOW => 0,
++	    HIGH => 1
++	   },
++	  ];
++
++
++#
++#
++sub check_arch {
++  $_ = `uname -m`;
++  chomp;
++  unless (m/armv4tl/) {
++    warn "# \n# Can't execute on $_.  Run on integrator platform.\n# \n";
++    return 0;
++  }
++  return 1;
++}
++
++#
++#
++sub load_module {
++  my $params = shift;
++  print "\nRemoving Module\n";
++  system "rmmod dwc_otg";
++  print "Loading Module\n";
++  if ($params ne "") {
++    print "Module Parameters: $params\n";
++  }
++  if (system("modprobe dwc_otg $params")) {
++    warn "Unable to load module\n";
++    return 0;
++  }
++  return 1;
++}
++
++#
++#
++sub test_status {
++  my $arg = shift;
++
++  print "\n";
++
++  if (defined $arg) {
++    warn "WARNING: $arg\n";
++  }
++
++  if ($errors > 0) {
++    warn "TEST FAILED with $errors errors\n";
++    return 0;
++  } else {
++    print "TEST PASSED\n";
++    return 0 if (defined $arg);
++  }
++  return 1;
++}
++
++#
++#
++@EXPORT = qw(
++$sysfsdir
++$paramdir
++$params
++$errors
++check_arch
++load_module
++test_status
++);
++
++1;
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/test/test_mod_param.pl
+@@ -0,0 +1,133 @@
++#!/usr/bin/perl -w
++#
++# Run this program on the integrator.
++#
++# - Tests module parameter default values.
++# - Tests setting of valid module parameter values via modprobe.
++# - Tests invalid module parameter values.
++# -----------------------------------------------------------------------------
++use strict;
++use dwc_otg_test;
++
++check_arch() or die;
++
++#
++#
++sub test {
++  my ($param,$expected) = @_;
++  my $value = get($param);
++
++  if ($value == $expected) {
++    print "$param = $value, okay\n";
++  }
++
++  else {
++    warn "ERROR: value of $param != $expected, $value\n";
++    $errors ++;
++  }
++}
++
++#
++#
++sub get {
++  my $param = shift;
++  my $tmp = `cat $paramdir/$param`;
++  chomp $tmp;
++  return $tmp;
++}
++
++#
++#
++sub test_main {
++
++  print "\nTesting Module Parameters\n";
++
++  load_module("") or die;
++
++  # Test initial values
++  print "\nTesting Default Values\n";
++  foreach (@{$params}) {
++    test ($_->{NAME}, $_->{DEFAULT});
++  }
++
++  # Test low value
++  print "\nTesting Low Value\n";
++  my $cmd_params = "";
++  foreach (@{$params}) {
++    $cmd_params = $cmd_params . "$_->{NAME}=$_->{LOW} ";
++  }
++  load_module($cmd_params) or die;
++
++  foreach (@{$params}) {
++    test ($_->{NAME}, $_->{LOW});
++  }
++
++  # Test high value
++  print "\nTesting High Value\n";
++  $cmd_params = "";
++  foreach (@{$params}) {
++    $cmd_params = $cmd_params . "$_->{NAME}=$_->{HIGH} ";
++  }
++  load_module($cmd_params) or die;
++
++  foreach (@{$params}) {
++    test ($_->{NAME}, $_->{HIGH});
++  }
++
++  # Test Enum
++  print "\nTesting Enumerated\n";
++  foreach (@{$params}) {
++    if (defined $_->{ENUM}) {
++      my $value;
++      foreach $value (@{$_->{ENUM}}) {
++	$cmd_params = "$_->{NAME}=$value";
++	load_module($cmd_params) or die;
++	test ($_->{NAME}, $value);
++      }
++    }
++  }
++
++  # Test Invalid Values
++  print "\nTesting Invalid Values\n";
++  $cmd_params = "";
++  foreach (@{$params}) {
++    $cmd_params = $cmd_params . sprintf "$_->{NAME}=%d ", $_->{LOW}-1;
++  }
++  load_module($cmd_params) or die;
++
++  foreach (@{$params}) {
++    test ($_->{NAME}, $_->{DEFAULT});
++  }
++
++  $cmd_params = "";
++  foreach (@{$params}) {
++    $cmd_params = $cmd_params . sprintf "$_->{NAME}=%d ", $_->{HIGH}+1;
++  }
++  load_module($cmd_params) or die;
++
++  foreach (@{$params}) {
++    test ($_->{NAME}, $_->{DEFAULT});
++  }
++
++  print "\nTesting Enumerated\n";
++  foreach (@{$params}) {
++    if (defined $_->{ENUM}) {
++      my $value;
++      foreach $value (@{$_->{ENUM}}) {
++	$value = $value + 1;
++	$cmd_params = "$_->{NAME}=$value";
++	load_module($cmd_params) or die;
++	test ($_->{NAME}, $_->{DEFAULT});
++	$value = $value - 2;
++	$cmd_params = "$_->{NAME}=$value";
++	load_module($cmd_params) or die;
++	test ($_->{NAME}, $_->{DEFAULT});
++      }
++    }
++  }
++
++  test_status() or die;
++}
++
++test_main();
++0;
+--- /dev/null
++++ b/drivers/usb/host/dwc_otg/test/test_sysfs.pl
+@@ -0,0 +1,193 @@
++#!/usr/bin/perl -w
++#
++# Run this program on the integrator
++# - Tests select sysfs attributes.
++# - Todo ... test more attributes, hnp/srp, buspower/bussuspend, etc.
++# -----------------------------------------------------------------------------
++use strict;
++use dwc_otg_test;
++
++check_arch() or die;
++
++#
++#
++sub test {
++  my ($attr,$expected) = @_;
++  my $string = get($attr);
++
++  if ($string eq $expected) {
++    printf("$attr = $string, okay\n");
++  }
++  else {
++    warn "ERROR: value of $attr != $expected, $string\n";
++    $errors ++;
++  }
++}
++
++#
++#
++sub set {
++  my ($reg, $value) = @_;
++  system "echo $value > $sysfsdir/$reg";
++}
++
++#
++#
++sub get {
++  my $attr = shift;
++  my $string = `cat $sysfsdir/$attr`;
++  chomp $string;
++  if ($string =~ m/\s\=\s/) {
++    my $tmp;
++    ($tmp, $string) = split /\s=\s/, $string;
++  }
++  return $string;
++}
++
++#
++#
++sub test_main {
++  print("\nTesting Sysfs Attributes\n");
++
++  load_module("") or die;
++
++  # Test initial values of regoffset/regvalue/guid/gsnpsid
++  print("\nTesting Default Values\n");
++
++  test("regoffset", "0xffffffff");
++  test("regvalue", "invalid offset");
++  test("guid", "0x12345678");	# this will fail if it has been changed
++  test("gsnpsid", "0x4f54200a");
++
++  # Test operation of regoffset/regvalue
++  print("\nTesting regoffset\n");
++  set('regoffset', '5a5a5a5a');
++  test("regoffset", "0xffffffff");
++
++  set('regoffset', '0');
++  test("regoffset", "0x00000000");
++
++  set('regoffset', '40000');
++  test("regoffset", "0x00000000");
++
++  set('regoffset', '3ffff');
++  test("regoffset", "0x0003ffff");
++
++  set('regoffset', '1');
++  test("regoffset", "0x00000001");
++
++  print("\nTesting regvalue\n");
++  set('regoffset', '3c');
++  test("regvalue", "0x12345678");
++  set('regvalue', '5a5a5a5a');
++  test("regvalue", "0x5a5a5a5a");
++  set('regvalue','a5a5a5a5');
++  test("regvalue", "0xa5a5a5a5");
++  set('guid','12345678');
++
++  # Test HNP Capable
++  print("\nTesting HNP Capable bit\n");
++  set('hnpcapable', '1');
++  test("hnpcapable", "0x1");
++  set('hnpcapable','0');
++  test("hnpcapable", "0x0");
++
++  set('regoffset','0c');
++
++  my $old = get('gusbcfg');
++  print("setting hnpcapable\n");
++  set('hnpcapable', '1');
++  test("hnpcapable", "0x1");
++  test('gusbcfg', sprintf "0x%08x", (oct ($old) | (1<<9)));
++  test('regvalue', sprintf "0x%08x", (oct ($old) | (1<<9)));
++
++  $old = get('gusbcfg');
++  print("clearing hnpcapable\n");
++  set('hnpcapable', '0');
++  test("hnpcapable", "0x0");
++  test ('gusbcfg', sprintf "0x%08x", oct ($old) & (~(1<<9)));
++  test ('regvalue', sprintf "0x%08x", oct ($old) & (~(1<<9)));
++
++  # Test SRP Capable
++  print("\nTesting SRP Capable bit\n");
++  set('srpcapable', '1');
++  test("srpcapable", "0x1");
++  set('srpcapable','0');
++  test("srpcapable", "0x0");
++
++  set('regoffset','0c');
++
++  $old = get('gusbcfg');
++  print("setting srpcapable\n");
++  set('srpcapable', '1');
++  test("srpcapable", "0x1");
++  test('gusbcfg', sprintf "0x%08x", (oct ($old) | (1<<8)));
++  test('regvalue', sprintf "0x%08x", (oct ($old) | (1<<8)));
++
++  $old = get('gusbcfg');
++  print("clearing srpcapable\n");
++  set('srpcapable', '0');
++  test("srpcapable", "0x0");
++  test('gusbcfg', sprintf "0x%08x", oct ($old) & (~(1<<8)));
++  test('regvalue', sprintf "0x%08x", oct ($old) & (~(1<<8)));
++
++  # Test GGPIO
++  print("\nTesting GGPIO\n");
++  set('ggpio','5a5a5a5a');
++  test('ggpio','0x5a5a0000');
++  set('ggpio','a5a5a5a5');
++  test('ggpio','0xa5a50000');
++  set('ggpio','11110000');
++  test('ggpio','0x11110000');
++  set('ggpio','00001111');
++  test('ggpio','0x00000000');
++
++  # Test DEVSPEED
++  print("\nTesting DEVSPEED\n");
++  set('regoffset','800');
++  $old = get('regvalue');
++  set('devspeed','0');
++  test('devspeed','0x0');
++  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3)));
++  set('devspeed','1');
++  test('devspeed','0x1');
++  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 1));
++  set('devspeed','2');
++  test('devspeed','0x2');
++  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 2));
++  set('devspeed','3');
++  test('devspeed','0x3');
++  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 3));
++  set('devspeed','4');
++  test('devspeed','0x0');
++  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3)));
++  set('devspeed','5');
++  test('devspeed','0x1');
++  test('regvalue',sprintf("0x%08x", oct($old) & ~(0x3) | 1));
++
++
++  #  mode	Returns the current mode:0 for device mode1 for host mode	Read
++  #  hnp	Initiate the Host Negotiation Protocol.  Read returns the status.	Read/Write
++  #  srp	Initiate the Session Request Protocol.  Read returns the status.	Read/Write
++  #  buspower	Get or Set the Power State of the bus (0 - Off or 1 - On) 	Read/Write
++  #  bussuspend	Suspend the USB bus.	Read/Write
++  #  busconnected	Get the connection status of the bus 	Read
++
++  #  gotgctl	Get or set the Core Control Status Register.	Read/Write
++  ##  gusbcfg	Get or set the Core USB Configuration Register	Read/Write
++  #  grxfsiz	Get or set the Receive FIFO Size Register	Read/Write
++  #  gnptxfsiz	Get or set the non-periodic Transmit Size Register	Read/Write
++  #  gpvndctl	Get or set the PHY Vendor Control Register	Read/Write
++  ##  ggpio	Get the value in the lower 16-bits of the General Purpose IO Register or Set the upper 16 bits.	Read/Write
++  ##  guid	Get or set the value of the User ID Register	Read/Write
++  ##  gsnpsid	Get the value of the Synopsys ID Regester	Read
++  ##  devspeed	Get or set the device speed setting in the DCFG register	Read/Write
++  #  enumspeed	Gets the device enumeration Speed.	Read
++  #  hptxfsiz	Get the value of the Host Periodic Transmit FIFO	Read
++  #  hprt0	Get or Set the value in the Host Port Control and Status Register	Read/Write
++
++  test_status("TEST NYI") or die;
++}
++
++test_main();
++0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0065-bcm2708-framebuffer-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0065-bcm2708-framebuffer-driver.patch
new file mode 100644
index 0000000000..c035875572
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0065-bcm2708-framebuffer-driver.patch
@@ -0,0 +1,3559 @@
+From 2320a031fa693daf5d92dd96881edf37f5f37ef8 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 17 Jun 2015 17:06:34 +0100
+Subject: [PATCH] bcm2708 framebuffer driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+
+bcm2708_fb : Implement blanking support using the mailbox property interface
+
+bcm2708_fb: Add pan and vsync controls
+
+bcm2708_fb: DMA acceleration for fb_copyarea
+
+Based on http://www.raspberrypi.org/phpBB3/viewtopic.php?p=62425#p62425
+Also used Simon's dmaer_master module as a reference for tweaking DMA
+settings for better performance.
+
+For now busylooping only. IRQ support might be added later.
+With non-overclocked Raspberry Pi, the performance is ~360 MB/s
+for simple copy or ~260 MB/s for two-pass copy (used when dragging
+windows to the right).
+
+In the case of using DMA channel 0, the performance improves
+to ~440 MB/s.
+
+For comparison, VFP optimized CPU copy can only do ~114 MB/s in
+the same conditions (hindered by reading uncached source buffer).
+
+Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
+
+bcm2708_fb: report number of dma copies
+
+Add a counter (exported via debugfs) reporting the
+number of dma copies that the framebuffer driver
+has done, in order to help evaluate different
+optimization strategies.
+
+Signed-off-by: Luke Diamand <luked@broadcom.com>
+
+bcm2708_fb: use IRQ for DMA copies
+
+The copyarea ioctl() uses DMA to speed things along. This
+was busy-waiting for completion. This change supports using
+an interrupt instead for larger transfers. For small
+transfers, busy-waiting is still likely to be faster.
+
+Signed-off-by: Luke Diamand <luke@diamand.org>
+
+bcm2708: Make ioctl logging quieter
+
+video: fbdev: bcm2708_fb: Don't panic on error
+
+No need to panic the kernel if the video driver fails.
+Just print a message and return an error.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+fbdev: bcm2708_fb: Add ARCH_BCM2835 support
+
+Add Device Tree support.
+Pass the device to dma_alloc_coherent() in order to get the
+correct bus address on ARCH_BCM2835.
+Use the new DMA legacy API header file.
+Including <mach/platform.h> is not necessary.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+BCM270x_DT: Add bcm2708-fb device
+
+Add bcm2708-fb to Device Tree and don't add the
+platform device when booting in DT mode.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+Cleanup of bcm2708_fb file to kernel coding standards
+
+Some minor change to function - remove a use of
+in_atomic, plus replacing various debug messages
+that manually specify the function name with
+("%s",.__func__)
+
+Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
+
+video: bcm2708_fb: Try allocating on the ARM and passing to VPU
+
+Currently the VPU allocates the contiguous buffer for the
+framebuffer.
+Try an alternate path first where we use dma_alloc_coherent
+and pass the buffer to the VPU. Should the VPU firmware not
+support that path, then free the buffer and revert to the
+old behaviour of using the VPU allocation.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/video/fbdev/Kconfig                |   14 +
+ drivers/video/fbdev/Makefile               |    1 +
+ drivers/video/fbdev/bcm2708_fb.c           |  920 ++++++++
+ drivers/video/logo/logo_linux_clut224.ppm  | 2483 +++++++-------------
+ include/soc/bcm2835/raspberrypi-firmware.h |    1 +
+ 5 files changed, 1817 insertions(+), 1602 deletions(-)
+ create mode 100644 drivers/video/fbdev/bcm2708_fb.c
+
+--- a/drivers/video/fbdev/Kconfig
++++ b/drivers/video/fbdev/Kconfig
+@@ -219,6 +219,20 @@ config FB_TILEBLITTING
+ comment "Frame buffer hardware drivers"
+ 	depends on FB
+ 
++config FB_BCM2708
++	tristate "BCM2708 framebuffer support"
++	depends on FB && RASPBERRYPI_FIRMWARE
++	select FB_CFB_FILLRECT
++	select FB_CFB_COPYAREA
++	select FB_CFB_IMAGEBLIT
++	help
++	  This framebuffer device driver is for the BCM2708 framebuffer.
++
++	  If you want to compile this as a module (=code which can be
++	  inserted into and removed from the running kernel), say M
++	  here and read <file:Documentation/kbuild/modules.txt>.  The module
++	  will be called bcm2708_fb.
++
+ config FB_GRVGA
+ 	tristate "Aeroflex Gaisler framebuffer support"
+ 	depends on FB && SPARC
+--- a/drivers/video/fbdev/Makefile
++++ b/drivers/video/fbdev/Makefile
+@@ -11,6 +11,7 @@ obj-$(CONFIG_FB_MACMODES)      += macmod
+ obj-$(CONFIG_FB_WMT_GE_ROPS)   += wmt_ge_rops.o
+ 
+ # Hardware specific drivers go first
++obj-$(CONFIG_FB_BCM2708)	  += bcm2708_fb.o
+ obj-$(CONFIG_FB_AMIGA)            += amifb.o c2p_planar.o
+ obj-$(CONFIG_FB_ARC)              += arcfb.o
+ obj-$(CONFIG_FB_CLPS711X)	  += clps711x-fb.o
+--- /dev/null
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -0,0 +1,920 @@
++/*
++ *  linux/drivers/video/bcm2708_fb.c
++ *
++ * Copyright (C) 2010 Broadcom
++ *
++ * This file is subject to the terms and conditions of the GNU General Public
++ * License.  See the file COPYING in the main directory of this archive
++ * for more details.
++ *
++ * Broadcom simple framebuffer driver
++ *
++ * This file is derived from cirrusfb.c
++ * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com>
++ *
++ */
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/errno.h>
++#include <linux/string.h>
++#include <linux/slab.h>
++#include <linux/mm.h>
++#include <linux/fb.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/ioport.h>
++#include <linux/list.h>
++#include <linux/platform_data/dma-bcm2708.h>
++#include <linux/platform_device.h>
++#include <linux/clk.h>
++#include <linux/printk.h>
++#include <linux/console.h>
++#include <linux/debugfs.h>
++#include <linux/io.h>
++#include <linux/dma-mapping.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++//#define BCM2708_FB_DEBUG
++#define MODULE_NAME "bcm2708_fb"
++
++#ifdef BCM2708_FB_DEBUG
++#define print_debug(fmt, ...) pr_debug("%s:%s:%d: " fmt, \
++			MODULE_NAME, __func__, __LINE__, ##__VA_ARGS__)
++#else
++#define print_debug(fmt, ...)
++#endif
++
++/* This is limited to 16 characters when displayed by X startup */
++static const char *bcm2708_name = "BCM2708 FB";
++
++#define DRIVER_NAME "bcm2708_fb"
++
++static int fbwidth = 800;	/* module parameter */
++static int fbheight = 480;	/* module parameter */
++static int fbdepth = 32;	/* module parameter */
++static int fbswap;		/* module parameter */
++
++static u32 dma_busy_wait_threshold = 1 << 15;
++module_param(dma_busy_wait_threshold, int, 0644);
++MODULE_PARM_DESC(dma_busy_wait_threshold, "Busy-wait for DMA completion below this area");
++
++struct fb_alloc_tags {
++	struct rpi_firmware_property_tag_header tag1;
++	u32 xres, yres;
++	struct rpi_firmware_property_tag_header tag2;
++	u32 xres_virtual, yres_virtual;
++	struct rpi_firmware_property_tag_header tag3;
++	u32 bpp;
++	struct rpi_firmware_property_tag_header tag4;
++	u32 xoffset, yoffset;
++	struct rpi_firmware_property_tag_header tag5;
++	u32 base, screen_size;
++	struct rpi_firmware_property_tag_header tag6;
++	u32 pitch;
++};
++
++struct bcm2708_fb_stats {
++	struct debugfs_regset32 regset;
++	u32 dma_copies;
++	u32 dma_irqs;
++};
++
++struct bcm2708_fb {
++	struct fb_info fb;
++	struct platform_device *dev;
++	struct rpi_firmware *fw;
++	u32 cmap[16];
++	u32 gpu_cmap[256];
++	int dma_chan;
++	int dma_irq;
++	void __iomem *dma_chan_base;
++	void *cb_base;		/* DMA control blocks */
++	dma_addr_t cb_handle;
++	struct dentry *debugfs_dir;
++	wait_queue_head_t dma_waitq;
++	struct bcm2708_fb_stats stats;
++	unsigned long fb_bus_address;
++	bool disable_arm_alloc;
++	unsigned int image_size;
++	dma_addr_t dma_addr;
++	void *cpuaddr;
++};
++
++#define to_bcm2708(info)	container_of(info, struct bcm2708_fb, fb)
++
++static void bcm2708_fb_debugfs_deinit(struct bcm2708_fb *fb)
++{
++	debugfs_remove_recursive(fb->debugfs_dir);
++	fb->debugfs_dir = NULL;
++}
++
++static int bcm2708_fb_debugfs_init(struct bcm2708_fb *fb)
++{
++	static struct debugfs_reg32 stats_registers[] = {
++		{
++			"dma_copies",
++			offsetof(struct bcm2708_fb_stats, dma_copies)
++		},
++		{
++			"dma_irqs",
++			offsetof(struct bcm2708_fb_stats, dma_irqs)
++		},
++	};
++
++	fb->debugfs_dir = debugfs_create_dir(DRIVER_NAME, NULL);
++	if (!fb->debugfs_dir) {
++		pr_warn("%s: could not create debugfs entry\n",
++			__func__);
++		return -EFAULT;
++	}
++
++	fb->stats.regset.regs = stats_registers;
++	fb->stats.regset.nregs = ARRAY_SIZE(stats_registers);
++	fb->stats.regset.base = &fb->stats;
++
++	debugfs_create_regset32("stats", 0444, fb->debugfs_dir,
++				&fb->stats.regset);
++	return 0;
++}
++
++static int bcm2708_fb_set_bitfields(struct fb_var_screeninfo *var)
++{
++	int ret = 0;
++
++	memset(&var->transp, 0, sizeof(var->transp));
++
++	var->red.msb_right = 0;
++	var->green.msb_right = 0;
++	var->blue.msb_right = 0;
++
++	switch (var->bits_per_pixel) {
++	case 1:
++	case 2:
++	case 4:
++	case 8:
++		var->red.length = var->bits_per_pixel;
++		var->red.offset = 0;
++		var->green.length = var->bits_per_pixel;
++		var->green.offset = 0;
++		var->blue.length = var->bits_per_pixel;
++		var->blue.offset = 0;
++		break;
++	case 16:
++		var->red.length = 5;
++		var->blue.length = 5;
++		/*
++		 * Green length can be 5 or 6 depending whether
++		 * we're operating in RGB555 or RGB565 mode.
++		 */
++		if (var->green.length != 5 && var->green.length != 6)
++			var->green.length = 6;
++		break;
++	case 24:
++		var->red.length = 8;
++		var->blue.length = 8;
++		var->green.length = 8;
++		break;
++	case 32:
++		var->red.length = 8;
++		var->green.length = 8;
++		var->blue.length = 8;
++		var->transp.length = 8;
++		break;
++	default:
++		ret = -EINVAL;
++		break;
++	}
++
++	/*
++	 * >= 16bpp displays have separate colour component bitfields
++	 * encoded in the pixel data.  Calculate their position from
++	 * the bitfield length defined above.
++	 */
++	if (ret == 0 && var->bits_per_pixel >= 24 && fbswap) {
++		var->blue.offset = 0;
++		var->green.offset = var->blue.offset + var->blue.length;
++		var->red.offset = var->green.offset + var->green.length;
++		var->transp.offset = var->red.offset + var->red.length;
++	} else if (ret == 0 && var->bits_per_pixel >= 24) {
++		var->red.offset = 0;
++		var->green.offset = var->red.offset + var->red.length;
++		var->blue.offset = var->green.offset + var->green.length;
++		var->transp.offset = var->blue.offset + var->blue.length;
++	} else if (ret == 0 && var->bits_per_pixel >= 16) {
++		var->blue.offset = 0;
++		var->green.offset = var->blue.offset + var->blue.length;
++		var->red.offset = var->green.offset + var->green.length;
++		var->transp.offset = var->red.offset + var->red.length;
++	}
++
++	return ret;
++}
++
++static int bcm2708_fb_check_var(struct fb_var_screeninfo *var,
++				struct fb_info *info)
++{
++	/* info input, var output */
++	print_debug("%s(%p) %dx%d (%dx%d), %d, %d\n",
++		    __func__, info, info->var.xres, info->var.yres,
++		    info->var.xres_virtual, info->var.yres_virtual,
++		    (int)info->screen_size, info->var.bits_per_pixel);
++	print_debug("%s(%p) %dx%d (%dx%d), %d\n", __func__, var, var->xres,
++		    var->yres, var->xres_virtual, var->yres_virtual,
++		    var->bits_per_pixel);
++
++	if (!var->bits_per_pixel)
++		var->bits_per_pixel = 16;
++
++	if (bcm2708_fb_set_bitfields(var) != 0) {
++		pr_err("%s: invalid bits_per_pixel %d\n", __func__,
++		       var->bits_per_pixel);
++		return -EINVAL;
++	}
++
++	if (var->xres_virtual < var->xres)
++		var->xres_virtual = var->xres;
++	/* use highest possible virtual resolution */
++	if (var->yres_virtual == -1) {
++		var->yres_virtual = 480;
++
++		pr_err("%s: virtual resolution set to maximum of %dx%d\n",
++		       __func__, var->xres_virtual, var->yres_virtual);
++	}
++	if (var->yres_virtual < var->yres)
++		var->yres_virtual = var->yres;
++
++	if (var->xoffset < 0)
++		var->xoffset = 0;
++	if (var->yoffset < 0)
++		var->yoffset = 0;
++
++	/* truncate xoffset and yoffset to maximum if too high */
++	if (var->xoffset > var->xres_virtual - var->xres)
++		var->xoffset = var->xres_virtual - var->xres - 1;
++	if (var->yoffset > var->yres_virtual - var->yres)
++		var->yoffset = var->yres_virtual - var->yres - 1;
++
++	return 0;
++}
++
++static int bcm2708_fb_set_par(struct fb_info *info)
++{
++	struct bcm2708_fb *fb = to_bcm2708(info);
++	struct fb_alloc_tags fbinfo = {
++		.tag1 = { RPI_FIRMWARE_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT,
++			  8, 0, },
++			.xres = info->var.xres,
++			.yres = info->var.yres,
++		.tag2 = { RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT,
++			  8, 0, },
++			.xres_virtual = info->var.xres_virtual,
++			.yres_virtual = info->var.yres_virtual,
++		.tag3 = { RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH, 4, 0 },
++			.bpp = info->var.bits_per_pixel,
++		.tag4 = { RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET, 8, 0 },
++			.xoffset = info->var.xoffset,
++			.yoffset = info->var.yoffset,
++		.tag5 = { RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE, 8, 0 },
++			/* base and screen_size will be initialised later */
++		.tag6 = { RPI_FIRMWARE_FRAMEBUFFER_SET_PITCH, 4, 0 },
++			/* pitch will be initialised later */
++	};
++	int ret, image_size;
++
++
++	print_debug("%s(%p) %dx%d (%dx%d), %d, %d\n", __func__, info,
++		    info->var.xres, info->var.yres, info->var.xres_virtual,
++		    info->var.yres_virtual, (int)info->screen_size,
++		    info->var.bits_per_pixel);
++
++	/* Try allocating our own buffer. We can specify all the parameters */
++	image_size = ((info->var.xres * info->var.yres) *
++		      info->var.bits_per_pixel) >> 3;
++
++	if (!fb->disable_arm_alloc &&
++	    (image_size != fb->image_size || !fb->dma_addr)) {
++		if (fb->dma_addr) {
++			dma_free_coherent(info->device, fb->image_size,
++					  fb->cpuaddr, fb->dma_addr);
++			fb->image_size = 0;
++			fb->cpuaddr = NULL;
++			fb->dma_addr = 0;
++		}
++
++		fb->cpuaddr = dma_alloc_coherent(info->device, image_size,
++						 &fb->dma_addr, GFP_KERNEL);
++
++		if (!fb->cpuaddr) {
++			fb->dma_addr = 0;
++			fb->disable_arm_alloc = true;
++		} else {
++			fb->image_size = image_size;
++		}
++	}
++
++	if (fb->cpuaddr) {
++		fbinfo.base = fb->dma_addr;
++		fbinfo.screen_size = image_size;
++		fbinfo.pitch = (info->var.xres * info->var.bits_per_pixel) >> 3;
++
++		ret = rpi_firmware_property_list(fb->fw, &fbinfo,
++						 sizeof(fbinfo));
++		if (ret || fbinfo.base != fb->dma_addr) {
++			/* Firmware either failed, or assigned a different base
++			 * address (ie it doesn't support being passed an FB
++			 * allocation).
++			 * Destroy the allocation, and don't try again.
++			 */
++			dma_free_coherent(info->device, fb->image_size,
++					  fb->cpuaddr, fb->dma_addr);
++			fb->image_size = 0;
++			fb->cpuaddr = NULL;
++			fb->dma_addr = 0;
++			fb->disable_arm_alloc = true;
++		}
++	} else {
++		/* Our allocation failed - drop into the old scheme of
++		 * allocation by the VPU.
++		 */
++		ret = -ENOMEM;
++	}
++
++	if (ret) {
++		/* Old scheme:
++		 * - FRAMEBUFFER_ALLOCATE passes 0 for base and screen_size.
++		 * - GET_PITCH instead of SET_PITCH.
++		 */
++		fbinfo.base = 0;
++		fbinfo.screen_size = 0;
++		fbinfo.tag6.tag = RPI_FIRMWARE_FRAMEBUFFER_GET_PITCH;
++		fbinfo.pitch = 0;
++
++		ret = rpi_firmware_property_list(fb->fw, &fbinfo,
++						 sizeof(fbinfo));
++		if (ret) {
++			dev_err(info->device,
++				"Failed to allocate GPU framebuffer (%d)\n",
++				ret);
++			return ret;
++		}
++	}
++
++	if (info->var.bits_per_pixel <= 8)
++		fb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
++	else
++		fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
++
++	fb->fb.fix.line_length = fbinfo.pitch;
++	fbinfo.base |= 0x40000000;
++	fb->fb_bus_address = fbinfo.base;
++	fbinfo.base &= ~0xc0000000;
++	fb->fb.fix.smem_start = fbinfo.base;
++	fb->fb.fix.smem_len = fbinfo.pitch * fbinfo.yres_virtual;
++	fb->fb.screen_size = fbinfo.screen_size;
++
++	if (!fb->dma_addr) {
++		if (fb->fb.screen_base)
++			iounmap(fb->fb.screen_base);
++
++		fb->fb.screen_base = ioremap_wc(fbinfo.base,
++						fb->fb.screen_size);
++	} else {
++		fb->fb.screen_base = fb->cpuaddr;
++	}
++
++	if (!fb->fb.screen_base) {
++		/* the console may currently be locked */
++		console_trylock();
++		console_unlock();
++		dev_err(info->device, "Failed to set screen_base\n");
++		return -ENOMEM;
++	}
++
++	print_debug("%s: start = %p,%p width=%d, height=%d, bpp=%d, pitch=%d size=%d\n",
++		    __func__, (void *)fb->fb.screen_base,
++		    (void *)fb->fb_bus_address, fbinfo.xres, fbinfo.yres,
++		    fbinfo.bpp, fbinfo.pitch, (int)fb->fb.screen_size);
++
++	return 0;
++}
++
++static inline u32 convert_bitfield(int val, struct fb_bitfield *bf)
++{
++	unsigned int mask = (1 << bf->length) - 1;
++
++	return (val >> (16 - bf->length) & mask) << bf->offset;
++}
++
++static int bcm2708_fb_setcolreg(unsigned int regno, unsigned int red,
++				unsigned int green, unsigned int blue,
++				unsigned int transp, struct fb_info *info)
++{
++	struct bcm2708_fb *fb = to_bcm2708(info);
++
++	if (fb->fb.var.bits_per_pixel <= 8) {
++		if (regno < 256) {
++			/* blue [23:16], green [15:8], red [7:0] */
++			fb->gpu_cmap[regno] = ((red   >> 8) & 0xff) << 0 |
++					      ((green >> 8) & 0xff) << 8 |
++					      ((blue  >> 8) & 0xff) << 16;
++		}
++		/* Hack: we need to tell GPU the palette has changed, but
++		 * currently bcm2708_fb_set_par takes noticeable time when
++		 * called for every (256) colour
++		 * So just call it for what looks like the last colour in a
++		 * list for now.
++		 */
++		if (regno == 15 || regno == 255) {
++			struct packet {
++				u32 offset;
++				u32 length;
++				u32 cmap[256];
++			} *packet;
++			int ret;
++
++			packet = kmalloc(sizeof(*packet), GFP_KERNEL);
++			if (!packet)
++				return -ENOMEM;
++			packet->offset = 0;
++			packet->length = regno + 1;
++			memcpy(packet->cmap, fb->gpu_cmap,
++			       sizeof(packet->cmap));
++			ret = rpi_firmware_property(fb->fw,
++						    RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE,
++						    packet,
++						    (2 + packet->length) * sizeof(u32));
++			if (ret || packet->offset)
++				dev_err(info->device,
++					"Failed to set palette (%d,%u)\n",
++					ret, packet->offset);
++			kfree(packet);
++		}
++	} else if (regno < 16) {
++		fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |
++				  convert_bitfield(blue, &fb->fb.var.blue) |
++				  convert_bitfield(green, &fb->fb.var.green) |
++				  convert_bitfield(red, &fb->fb.var.red);
++	}
++	return regno > 255;
++}
++
++static int bcm2708_fb_blank(int blank_mode, struct fb_info *info)
++{
++	struct bcm2708_fb *fb = to_bcm2708(info);
++	u32 value;
++	int ret;
++
++	switch (blank_mode) {
++	case FB_BLANK_UNBLANK:
++		value = 0;
++		break;
++	case FB_BLANK_NORMAL:
++	case FB_BLANK_VSYNC_SUSPEND:
++	case FB_BLANK_HSYNC_SUSPEND:
++	case FB_BLANK_POWERDOWN:
++		value = 1;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	ret = rpi_firmware_property(fb->fw, RPI_FIRMWARE_FRAMEBUFFER_BLANK,
++				    &value, sizeof(value));
++	if (ret)
++		dev_err(info->device, "%s(%d) failed: %d\n", __func__,
++			blank_mode, ret);
++
++	return ret;
++}
++
++static int bcm2708_fb_pan_display(struct fb_var_screeninfo *var,
++				  struct fb_info *info)
++{
++	s32 result;
++
++	info->var.xoffset = var->xoffset;
++	info->var.yoffset = var->yoffset;
++	result = bcm2708_fb_set_par(info);
++	if (result != 0)
++		pr_err("%s(%d,%d) returns=%d\n", __func__, var->xoffset,
++		       var->yoffset, result);
++	return result;
++}
++
++static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
++{
++	struct bcm2708_fb *fb = to_bcm2708(info);
++	u32 dummy = 0;
++	int ret;
++
++	switch (cmd) {
++	case FBIO_WAITFORVSYNC:
++		ret = rpi_firmware_property(fb->fw,
++					    RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC,
++					    &dummy, sizeof(dummy));
++		break;
++	default:
++		dev_dbg(info->device, "Unknown ioctl 0x%x\n", cmd);
++		return -ENOTTY;
++	}
++
++	if (ret)
++		dev_err(info->device, "ioctl 0x%x failed (%d)\n", cmd, ret);
++
++	return ret;
++}
++static void bcm2708_fb_fillrect(struct fb_info *info,
++				const struct fb_fillrect *rect)
++{
++	/* (is called) print_debug("bcm2708_fb_fillrect\n"); */
++	cfb_fillrect(info, rect);
++}
++
++/* A helper function for configuring dma control block */
++static void set_dma_cb(struct bcm2708_dma_cb *cb,
++		       int        burst_size,
++		       dma_addr_t dst,
++		       int        dst_stride,
++		       dma_addr_t src,
++		       int        src_stride,
++		       int        w,
++		       int        h)
++{
++	cb->info = BCM2708_DMA_BURST(burst_size) | BCM2708_DMA_S_WIDTH |
++		   BCM2708_DMA_S_INC | BCM2708_DMA_D_WIDTH |
++		   BCM2708_DMA_D_INC | BCM2708_DMA_TDMODE;
++	cb->dst = dst;
++	cb->src = src;
++	/*
++	 * This is not really obvious from the DMA documentation,
++	 * but the top 16 bits must be programmmed to "height -1"
++	 * and not "height" in 2D mode.
++	 */
++	cb->length = ((h - 1) << 16) | w;
++	cb->stride = ((dst_stride - w) << 16) | (u16)(src_stride - w);
++	cb->pad[0] = 0;
++	cb->pad[1] = 0;
++}
++
++static void bcm2708_fb_copyarea(struct fb_info *info,
++				const struct fb_copyarea *region)
++{
++	struct bcm2708_fb *fb = to_bcm2708(info);
++	struct bcm2708_dma_cb *cb = fb->cb_base;
++	int bytes_per_pixel = (info->var.bits_per_pixel + 7) >> 3;
++
++	/* Channel 0 supports larger bursts and is a bit faster */
++	int burst_size = (fb->dma_chan == 0) ? 8 : 2;
++	int pixels = region->width * region->height;
++
++	/* Fallback to cfb_copyarea() if we don't like something */
++	if (bytes_per_pixel > 4 ||
++	    info->var.xres * info->var.yres > 1920 * 1200 ||
++	    region->width <= 0 || region->width > info->var.xres ||
++	    region->height <= 0 || region->height > info->var.yres ||
++	    region->sx < 0 || region->sx >= info->var.xres ||
++	    region->sy < 0 || region->sy >= info->var.yres ||
++	    region->dx < 0 || region->dx >= info->var.xres ||
++	    region->dy < 0 || region->dy >= info->var.yres ||
++	    region->sx + region->width > info->var.xres ||
++	    region->dx + region->width > info->var.xres ||
++	    region->sy + region->height > info->var.yres ||
++	    region->dy + region->height > info->var.yres) {
++		cfb_copyarea(info, region);
++		return;
++	}
++
++	if (region->dy == region->sy && region->dx > region->sx) {
++		/*
++		 * A difficult case of overlapped copy. Because DMA can't
++		 * copy individual scanlines in backwards direction, we need
++		 * two-pass processing. We do it by programming a chain of dma
++		 * control blocks in the first 16K part of the buffer and use
++		 * the remaining 48K as the intermediate temporary scratch
++		 * buffer. The buffer size is sufficient to handle up to
++		 * 1920x1200 resolution at 32bpp pixel depth.
++		 */
++		int y;
++		dma_addr_t control_block_pa = fb->cb_handle;
++		dma_addr_t scratchbuf = fb->cb_handle + 16 * 1024;
++		int scanline_size = bytes_per_pixel * region->width;
++		int scanlines_per_cb = (64 * 1024 - 16 * 1024) / scanline_size;
++
++		for (y = 0; y < region->height; y += scanlines_per_cb) {
++			dma_addr_t src =
++				fb->fb_bus_address +
++				bytes_per_pixel * region->sx +
++				(region->sy + y) * fb->fb.fix.line_length;
++			dma_addr_t dst =
++				fb->fb_bus_address +
++				bytes_per_pixel * region->dx +
++				(region->dy + y) * fb->fb.fix.line_length;
++
++			if (region->height - y < scanlines_per_cb)
++				scanlines_per_cb = region->height - y;
++
++			set_dma_cb(cb, burst_size, scratchbuf, scanline_size,
++				   src, fb->fb.fix.line_length,
++				   scanline_size, scanlines_per_cb);
++			control_block_pa += sizeof(struct bcm2708_dma_cb);
++			cb->next = control_block_pa;
++			cb++;
++
++			set_dma_cb(cb, burst_size, dst, fb->fb.fix.line_length,
++				   scratchbuf, scanline_size,
++				   scanline_size, scanlines_per_cb);
++			control_block_pa += sizeof(struct bcm2708_dma_cb);
++			cb->next = control_block_pa;
++			cb++;
++		}
++		/* move the pointer back to the last dma control block */
++		cb--;
++	} else {
++		/* A single dma control block is enough. */
++		int sy, dy, stride;
++
++		if (region->dy <= region->sy) {
++			/* processing from top to bottom */
++			dy = region->dy;
++			sy = region->sy;
++			stride = fb->fb.fix.line_length;
++		} else {
++			/* processing from bottom to top */
++			dy = region->dy + region->height - 1;
++			sy = region->sy + region->height - 1;
++			stride = -fb->fb.fix.line_length;
++		}
++		set_dma_cb(cb, burst_size,
++			   fb->fb_bus_address + dy * fb->fb.fix.line_length +
++						   bytes_per_pixel * region->dx,
++			   stride,
++			   fb->fb_bus_address + sy * fb->fb.fix.line_length +
++						   bytes_per_pixel * region->sx,
++			   stride,
++			   region->width * bytes_per_pixel,
++			   region->height);
++	}
++
++	/* end of dma control blocks chain */
++	cb->next = 0;
++
++	if (pixels < dma_busy_wait_threshold) {
++		bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
++		bcm_dma_wait_idle(fb->dma_chan_base);
++	} else {
++		void __iomem *dma_chan = fb->dma_chan_base;
++
++		cb->info |= BCM2708_DMA_INT_EN;
++		bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
++		while (bcm_dma_is_busy(dma_chan)) {
++			wait_event_interruptible(fb->dma_waitq,
++						 !bcm_dma_is_busy(dma_chan));
++		}
++		fb->stats.dma_irqs++;
++	}
++	fb->stats.dma_copies++;
++}
++
++static void bcm2708_fb_imageblit(struct fb_info *info,
++				 const struct fb_image *image)
++{
++	/* (is called) print_debug("bcm2708_fb_imageblit\n"); */
++	cfb_imageblit(info, image);
++}
++
++static irqreturn_t bcm2708_fb_dma_irq(int irq, void *cxt)
++{
++	struct bcm2708_fb *fb = cxt;
++
++	/* FIXME: should read status register to check if this is
++	 * actually interrupting us or not, in case this interrupt
++	 * ever becomes shared amongst several DMA channels
++	 *
++	 * readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_IRQ;
++	 */
++
++	/* acknowledge the interrupt */
++	writel(BCM2708_DMA_INT, fb->dma_chan_base + BCM2708_DMA_CS);
++
++	wake_up(&fb->dma_waitq);
++	return IRQ_HANDLED;
++}
++
++static struct fb_ops bcm2708_fb_ops = {
++	.owner = THIS_MODULE,
++	.fb_check_var = bcm2708_fb_check_var,
++	.fb_set_par = bcm2708_fb_set_par,
++	.fb_setcolreg = bcm2708_fb_setcolreg,
++	.fb_blank = bcm2708_fb_blank,
++	.fb_fillrect = bcm2708_fb_fillrect,
++	.fb_copyarea = bcm2708_fb_copyarea,
++	.fb_imageblit = bcm2708_fb_imageblit,
++	.fb_pan_display = bcm2708_fb_pan_display,
++	.fb_ioctl = bcm2708_ioctl,
++};
++
++static int bcm2708_fb_register(struct bcm2708_fb *fb)
++{
++	int ret;
++
++	fb->fb.fbops = &bcm2708_fb_ops;
++	fb->fb.flags = FBINFO_FLAG_DEFAULT | FBINFO_HWACCEL_COPYAREA;
++	fb->fb.pseudo_palette = fb->cmap;
++
++	strncpy(fb->fb.fix.id, bcm2708_name, sizeof(fb->fb.fix.id));
++	fb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
++	fb->fb.fix.type_aux = 0;
++	fb->fb.fix.xpanstep = 1;
++	fb->fb.fix.ypanstep = 1;
++	fb->fb.fix.ywrapstep = 0;
++	fb->fb.fix.accel = FB_ACCEL_NONE;
++
++	fb->fb.var.xres = fbwidth;
++	fb->fb.var.yres = fbheight;
++	fb->fb.var.xres_virtual = fbwidth;
++	fb->fb.var.yres_virtual = fbheight;
++	fb->fb.var.bits_per_pixel = fbdepth;
++	fb->fb.var.vmode = FB_VMODE_NONINTERLACED;
++	fb->fb.var.activate = FB_ACTIVATE_NOW;
++	fb->fb.var.nonstd = 0;
++	fb->fb.var.height = -1;		/* height of picture in mm    */
++	fb->fb.var.width = -1;		/* width of picture in mm    */
++	fb->fb.var.accel_flags = 0;
++
++	fb->fb.monspecs.hfmin = 0;
++	fb->fb.monspecs.hfmax = 100000;
++	fb->fb.monspecs.vfmin = 0;
++	fb->fb.monspecs.vfmax = 400;
++	fb->fb.monspecs.dclkmin = 1000000;
++	fb->fb.monspecs.dclkmax = 100000000;
++
++	bcm2708_fb_set_bitfields(&fb->fb.var);
++	init_waitqueue_head(&fb->dma_waitq);
++
++	/*
++	 * Allocate colourmap.
++	 */
++
++	fb_set_var(&fb->fb, &fb->fb.var);
++	ret = bcm2708_fb_set_par(&fb->fb);
++	if (ret)
++		return ret;
++
++	print_debug("BCM2708FB: registering framebuffer (%dx%d@%d) (%d)\n",
++		    fbwidth, fbheight, fbdepth, fbswap);
++
++	ret = register_framebuffer(&fb->fb);
++	print_debug("BCM2708FB: register framebuffer (%d)\n", ret);
++	if (ret == 0)
++		goto out;
++
++	print_debug("BCM2708FB: cannot register framebuffer (%d)\n", ret);
++out:
++	return ret;
++}
++
++static int bcm2708_fb_probe(struct platform_device *dev)
++{
++	struct device_node *fw_np;
++	struct rpi_firmware *fw;
++	struct bcm2708_fb *fb;
++	int ret;
++
++	fw_np = of_parse_phandle(dev->dev.of_node, "firmware", 0);
++/* Remove comment when booting without Device Tree is no longer supported
++ *	if (!fw_np) {
++ *		dev_err(&dev->dev, "Missing firmware node\n");
++ *		return -ENOENT;
++ *	}
++ */
++	fw = rpi_firmware_get(fw_np);
++	if (!fw)
++		return -EPROBE_DEFER;
++
++	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
++	if (!fb) {
++		ret = -ENOMEM;
++		goto free_region;
++	}
++
++	fb->fw = fw;
++	bcm2708_fb_debugfs_init(fb);
++
++	fb->cb_base = dma_alloc_wc(&dev->dev, SZ_64K,
++					     &fb->cb_handle, GFP_KERNEL);
++	if (!fb->cb_base) {
++		dev_err(&dev->dev, "cannot allocate DMA CBs\n");
++		ret = -ENOMEM;
++		goto free_fb;
++	}
++
++	pr_info("BCM2708FB: allocated DMA memory %pad\n", &fb->cb_handle);
++
++	ret = bcm_dma_chan_alloc(BCM_DMA_FEATURE_BULK,
++				 &fb->dma_chan_base, &fb->dma_irq);
++	if (ret < 0) {
++		dev_err(&dev->dev, "couldn't allocate a DMA channel\n");
++		goto free_cb;
++	}
++	fb->dma_chan = ret;
++
++	ret = request_irq(fb->dma_irq, bcm2708_fb_dma_irq,
++			  0, "bcm2708_fb dma", fb);
++	if (ret) {
++		pr_err("%s: failed to request DMA irq\n", __func__);
++		goto free_dma_chan;
++	}
++
++	pr_info("BCM2708FB: allocated DMA channel %d\n", fb->dma_chan);
++
++	fb->dev = dev;
++	fb->fb.device = &dev->dev;
++
++	/* failure here isn't fatal, but we'll fail in vc_mem_copy if
++	 * fb->gpu is not valid
++	 */
++	rpi_firmware_property(fb->fw, RPI_FIRMWARE_GET_VC_MEMORY, &fb->gpu,
++			      sizeof(fb->gpu));
++
++	ret = bcm2708_fb_register(fb);
++	if (ret == 0) {
++		platform_set_drvdata(dev, fb);
++		goto out;
++	}
++
++free_dma_chan:
++	bcm_dma_chan_free(fb->dma_chan);
++free_cb:
++	dma_free_wc(&dev->dev, SZ_64K, fb->cb_base, fb->cb_handle);
++free_fb:
++	kfree(fb);
++free_region:
++	dev_err(&dev->dev, "probe failed, err %d\n", ret);
++out:
++	return ret;
++}
++
++static int bcm2708_fb_remove(struct platform_device *dev)
++{
++	struct bcm2708_fb *fb = platform_get_drvdata(dev);
++
++	platform_set_drvdata(dev, NULL);
++
++	if (fb->fb.screen_base)
++		iounmap(fb->fb.screen_base);
++	unregister_framebuffer(&fb->fb);
++
++	dma_free_wc(&dev->dev, SZ_64K, fb->cb_base, fb->cb_handle);
++	bcm_dma_chan_free(fb->dma_chan);
++
++	bcm2708_fb_debugfs_deinit(fb);
++
++	free_irq(fb->dma_irq, fb);
++
++	kfree(fb);
++
++	return 0;
++}
++
++static const struct of_device_id bcm2708_fb_of_match_table[] = {
++	{ .compatible = "brcm,bcm2708-fb", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, bcm2708_fb_of_match_table);
++
++static struct platform_driver bcm2708_fb_driver = {
++	.probe = bcm2708_fb_probe,
++	.remove = bcm2708_fb_remove,
++	.driver = {
++		   .name = DRIVER_NAME,
++		   .owner = THIS_MODULE,
++		   .of_match_table = bcm2708_fb_of_match_table,
++		   },
++};
++
++static int __init bcm2708_fb_init(void)
++{
++	return platform_driver_register(&bcm2708_fb_driver);
++}
++
++module_init(bcm2708_fb_init);
++
++static void __exit bcm2708_fb_exit(void)
++{
++	platform_driver_unregister(&bcm2708_fb_driver);
++}
++
++module_exit(bcm2708_fb_exit);
++
++module_param(fbwidth, int, 0644);
++module_param(fbheight, int, 0644);
++module_param(fbdepth, int, 0644);
++module_param(fbswap, int, 0644);
++
++MODULE_DESCRIPTION("BCM2708 framebuffer driver");
++MODULE_LICENSE("GPL");
++
++MODULE_PARM_DESC(fbwidth, "Width of ARM Framebuffer");
++MODULE_PARM_DESC(fbheight, "Height of ARM Framebuffer");
++MODULE_PARM_DESC(fbdepth, "Bit depth of ARM Framebuffer");
++MODULE_PARM_DESC(fbswap, "Swap order of red and blue in 24 and 32 bit modes");
+--- a/drivers/video/logo/logo_linux_clut224.ppm
++++ b/drivers/video/logo/logo_linux_clut224.ppm
+@@ -1,1604 +1,883 @@
+ P3
+-# Standard 224-color Linux logo
+-80 80
++63 80
+ 255
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++2 0 1  52 5 18  141 13 49  185 17 65  191 17 67  189 17 67
++189 17 66  188 17 66  188 17 66  189 17 66  191 17 67  187 17 66
++146 13 51  56 5 19  4 0 1  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  14 1 5  68 6 24  131 12 46  166 15 58
++180 16 63  183 17 64  180 16 63  168 15 59  134 12 47  75 7 26
++17 2 6  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  5 0 2  24 2 8
++44 4 15  52 5 18  45 4 16  26 2 9  6 1 2  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0  0 0 0  0 0 0  0 0 0
++0 0 0  0 0 0  0 0 0
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -122,6 +122,7 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH =                  0x00048005,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_PIXEL_ORDER =            0x00048006,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_ALPHA_MODE =             0x00048007,
++	RPI_FIRMWARE_FRAMEBUFFER_SET_PITCH =                  0x00048008,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET =         0x00048009,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN =               0x0004800a,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE =                0x0004800b,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0066-Pulled-in-the-multi-frame-buffer-support-from-the-Pi.patch b/target/linux/bcm27xx/patches-5.15/950-0066-Pulled-in-the-multi-frame-buffer-support-from-the-Pi.patch
new file mode 100644
index 0000000000..ccf7bd96f7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0066-Pulled-in-the-multi-frame-buffer-support-from-the-Pi.patch
@@ -0,0 +1,828 @@
+From 35cc50251cbf17c5e855879bcf6d71995f0f271a Mon Sep 17 00:00:00 2001
+From: James Hughes <james.hughes@raspberrypi.org>
+Date: Thu, 14 Mar 2019 13:27:54 +0000
+Subject: [PATCH] Pulled in the multi frame buffer support from the Pi3
+ repo
+
+---
+ drivers/video/fbdev/bcm2708_fb.c           | 457 +++++++++++++++------
+ include/soc/bcm2835/raspberrypi-firmware.h |  13 +
+ 2 files changed, 337 insertions(+), 133 deletions(-)
+
+--- a/drivers/video/fbdev/bcm2708_fb.c
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -2,6 +2,7 @@
+  *  linux/drivers/video/bcm2708_fb.c
+  *
+  * Copyright (C) 2010 Broadcom
++ * Copyright (C) 2018 Raspberry Pi (Trading) Ltd
+  *
+  * This file is subject to the terms and conditions of the GNU General Public
+  * License.  See the file COPYING in the main directory of this archive
+@@ -13,6 +14,7 @@
+  * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com>
+  *
+  */
++
+ #include <linux/module.h>
+ #include <linux/kernel.h>
+ #include <linux/errno.h>
+@@ -33,6 +35,7 @@
+ #include <linux/io.h>
+ #include <linux/dma-mapping.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
++#include <linux/mutex.h>
+ 
+ //#define BCM2708_FB_DEBUG
+ #define MODULE_NAME "bcm2708_fb"
+@@ -79,64 +82,150 @@ struct bcm2708_fb_stats {
+ 	u32 dma_irqs;
+ };
+ 
++struct vc4_display_settings_t {
++	u32 display_num;
++	u32 width;
++	u32 height;
++	u32 depth;
++	u32 pitch;
++	u32 virtual_width;
++	u32 virtual_height;
++	u32 virtual_width_offset;
++	u32 virtual_height_offset;
++	unsigned long fb_bus_address;
++};
++
++struct bcm2708_fb_dev;
++
+ struct bcm2708_fb {
+ 	struct fb_info fb;
+ 	struct platform_device *dev;
+-	struct rpi_firmware *fw;
+ 	u32 cmap[16];
+ 	u32 gpu_cmap[256];
+-	int dma_chan;
+-	int dma_irq;
+-	void __iomem *dma_chan_base;
+-	void *cb_base;		/* DMA control blocks */
+-	dma_addr_t cb_handle;
+ 	struct dentry *debugfs_dir;
+-	wait_queue_head_t dma_waitq;
+-	struct bcm2708_fb_stats stats;
++	struct dentry *debugfs_subdir;
+ 	unsigned long fb_bus_address;
+-	bool disable_arm_alloc;
++	struct { u32 base, length; } gpu;
++	struct vc4_display_settings_t display_settings;
++	struct debugfs_regset32 screeninfo_regset;
++	struct bcm2708_fb_dev *fbdev;
+ 	unsigned int image_size;
+ 	dma_addr_t dma_addr;
+ 	void *cpuaddr;
+ };
+ 
++#define MAX_FRAMEBUFFERS 3
++
++struct bcm2708_fb_dev {
++	int firmware_supports_multifb;
++	/* Protects the DMA system from multiple FB access */
++	struct mutex dma_mutex;
++	int dma_chan;
++	int dma_irq;
++	void __iomem *dma_chan_base;
++	wait_queue_head_t dma_waitq;
++	bool disable_arm_alloc;
++	struct bcm2708_fb_stats dma_stats;
++	void *cb_base;	/* DMA control blocks */
++	dma_addr_t cb_handle;
++	int instance_count;
++	int num_displays;
++	struct rpi_firmware *fw;
++	struct bcm2708_fb displays[MAX_FRAMEBUFFERS];
++};
++
+ #define to_bcm2708(info)	container_of(info, struct bcm2708_fb, fb)
+ 
+ static void bcm2708_fb_debugfs_deinit(struct bcm2708_fb *fb)
+ {
+-	debugfs_remove_recursive(fb->debugfs_dir);
+-	fb->debugfs_dir = NULL;
++	debugfs_remove_recursive(fb->debugfs_subdir);
++	fb->debugfs_subdir = NULL;
++
++	fb->fbdev->instance_count--;
++
++	if (!fb->fbdev->instance_count) {
++		debugfs_remove_recursive(fb->debugfs_dir);
++		fb->debugfs_dir = NULL;
++	}
+ }
+ 
+ static int bcm2708_fb_debugfs_init(struct bcm2708_fb *fb)
+ {
++	char buf[3];
++	struct bcm2708_fb_dev *fbdev = fb->fbdev;
++
+ 	static struct debugfs_reg32 stats_registers[] = {
+-		{
+-			"dma_copies",
+-			offsetof(struct bcm2708_fb_stats, dma_copies)
+-		},
+-		{
+-			"dma_irqs",
+-			offsetof(struct bcm2708_fb_stats, dma_irqs)
+-		},
++	{"dma_copies", offsetof(struct bcm2708_fb_stats, dma_copies)},
++	{"dma_irqs",   offsetof(struct bcm2708_fb_stats, dma_irqs)},
+ 	};
+ 
+-	fb->debugfs_dir = debugfs_create_dir(DRIVER_NAME, NULL);
++	static struct debugfs_reg32 screeninfo[] = {
++	{"width",	 offsetof(struct fb_var_screeninfo, xres)},
++	{"height",	 offsetof(struct fb_var_screeninfo, yres)},
++	{"bpp",		 offsetof(struct fb_var_screeninfo, bits_per_pixel)},
++	{"xres_virtual", offsetof(struct fb_var_screeninfo, xres_virtual)},
++	{"yres_virtual", offsetof(struct fb_var_screeninfo, yres_virtual)},
++	{"xoffset",	 offsetof(struct fb_var_screeninfo, xoffset)},
++	{"yoffset",	 offsetof(struct fb_var_screeninfo, yoffset)},
++	};
++
++	fb->debugfs_dir = debugfs_lookup(DRIVER_NAME, NULL);
++
++	if (!fb->debugfs_dir)
++		fb->debugfs_dir = debugfs_create_dir(DRIVER_NAME, NULL);
++
+ 	if (!fb->debugfs_dir) {
+-		pr_warn("%s: could not create debugfs entry\n",
+-			__func__);
++		dev_warn(fb->fb.dev, "%s: could not create debugfs folder\n",
++			 __func__);
+ 		return -EFAULT;
+ 	}
+ 
+-	fb->stats.regset.regs = stats_registers;
+-	fb->stats.regset.nregs = ARRAY_SIZE(stats_registers);
+-	fb->stats.regset.base = &fb->stats;
++	snprintf(buf, sizeof(buf), "%u", fb->display_settings.display_num);
++
++	fb->debugfs_subdir = debugfs_create_dir(buf, fb->debugfs_dir);
+ 
+ 	debugfs_create_regset32("stats", 0444, fb->debugfs_dir,
+ 				&fb->stats.regset);
++
++	if (!fb->debugfs_subdir) {
++		dev_warn(fb->fb.dev, "%s: could not create debugfs entry %u\n",
++			 __func__, fb->display_settings.display_num);
++		return -EFAULT;
++	}
++
++	fbdev->dma_stats.regset.regs = stats_registers;
++	fbdev->dma_stats.regset.nregs = ARRAY_SIZE(stats_registers);
++	fbdev->dma_stats.regset.base = &fbdev->dma_stats;
++
++	debugfs_create_regset32("dma_stats", 0444, fb->debugfs_subdir,
++				&fbdev->dma_stats.regset);
++
++	fb->screeninfo_regset.regs = screeninfo;
++	fb->screeninfo_regset.nregs = ARRAY_SIZE(screeninfo);
++	fb->screeninfo_regset.base = &fb->fb.var;
++
++	debugfs_create_regset32("screeninfo", 0444, fb->debugfs_subdir,
++				&fb->screeninfo_regset);
++
++	fbdev->instance_count++;
++
+ 	return 0;
+ }
+ 
++static void set_display_num(struct bcm2708_fb *fb)
++{
++	if (fb && fb->fbdev && fb->fbdev->firmware_supports_multifb) {
++		u32 tmp = fb->display_settings.display_num;
++
++		if (rpi_firmware_property(fb->fbdev->fw,
++					  RPI_FIRMWARE_FRAMEBUFFER_SET_DISPLAY_NUM,
++					  &tmp,
++					  sizeof(tmp)))
++			dev_warn_once(fb->fb.dev,
++				      "Set display number call failed. Old GPU firmware?");
++	}
++}
++
+ static int bcm2708_fb_set_bitfields(struct fb_var_screeninfo *var)
+ {
+ 	int ret = 0;
+@@ -214,11 +303,11 @@ static int bcm2708_fb_check_var(struct f
+ 				struct fb_info *info)
+ {
+ 	/* info input, var output */
+-	print_debug("%s(%p) %dx%d (%dx%d), %d, %d\n",
++	print_debug("%s(%p) %ux%u (%ux%u), %ul, %u\n",
+ 		    __func__, info, info->var.xres, info->var.yres,
+ 		    info->var.xres_virtual, info->var.yres_virtual,
+-		    (int)info->screen_size, info->var.bits_per_pixel);
+-	print_debug("%s(%p) %dx%d (%dx%d), %d\n", __func__, var, var->xres,
++		    info->screen_size, info->var.bits_per_pixel);
++	print_debug("%s(%p) %ux%u (%ux%u), %u\n", __func__, var, var->xres,
+ 		    var->yres, var->xres_virtual, var->yres_virtual,
+ 		    var->bits_per_pixel);
+ 
+@@ -281,17 +370,24 @@ static int bcm2708_fb_set_par(struct fb_
+ 	};
+ 	int ret, image_size;
+ 
+-
+-	print_debug("%s(%p) %dx%d (%dx%d), %d, %d\n", __func__, info,
++	print_debug("%s(%p) %dx%d (%dx%d), %d, %d (display %d)\n", __func__,
++		    info,
+ 		    info->var.xres, info->var.yres, info->var.xres_virtual,
+ 		    info->var.yres_virtual, (int)info->screen_size,
+-		    info->var.bits_per_pixel);
++		    info->var.bits_per_pixel, value);
++
++	/* Need to set the display number to act on first
++	 * Cannot do it in the tag list because on older firmware the call
++	 * will fail and stop the rest of the list being executed.
++	 * We can ignore this call failing as the default at other end is 0
++	 */
++	set_display_num(fb);
+ 
+ 	/* Try allocating our own buffer. We can specify all the parameters */
+ 	image_size = ((info->var.xres * info->var.yres) *
+ 		      info->var.bits_per_pixel) >> 3;
+ 
+-	if (!fb->disable_arm_alloc &&
++	if (!fb->fbdev->disable_arm_alloc &&
+ 	    (image_size != fb->image_size || !fb->dma_addr)) {
+ 		if (fb->dma_addr) {
+ 			dma_free_coherent(info->device, fb->image_size,
+@@ -306,7 +402,7 @@ static int bcm2708_fb_set_par(struct fb_
+ 
+ 		if (!fb->cpuaddr) {
+ 			fb->dma_addr = 0;
+-			fb->disable_arm_alloc = true;
++			fb->fbdev->disable_arm_alloc = true;
+ 		} else {
+ 			fb->image_size = image_size;
+ 		}
+@@ -317,7 +413,7 @@ static int bcm2708_fb_set_par(struct fb_
+ 		fbinfo.screen_size = image_size;
+ 		fbinfo.pitch = (info->var.xres * info->var.bits_per_pixel) >> 3;
+ 
+-		ret = rpi_firmware_property_list(fb->fw, &fbinfo,
++		ret = rpi_firmware_property_list(fb->fbdev->fw, &fbinfo,
+ 						 sizeof(fbinfo));
+ 		if (ret || fbinfo.base != fb->dma_addr) {
+ 			/* Firmware either failed, or assigned a different base
+@@ -330,7 +426,7 @@ static int bcm2708_fb_set_par(struct fb_
+ 			fb->image_size = 0;
+ 			fb->cpuaddr = NULL;
+ 			fb->dma_addr = 0;
+-			fb->disable_arm_alloc = true;
++			fb->fbdev->disable_arm_alloc = true;
+ 		}
+ 	} else {
+ 		/* Our allocation failed - drop into the old scheme of
+@@ -349,7 +445,7 @@ static int bcm2708_fb_set_par(struct fb_
+ 		fbinfo.tag6.tag = RPI_FIRMWARE_FRAMEBUFFER_GET_PITCH;
+ 		fbinfo.pitch = 0;
+ 
+-		ret = rpi_firmware_property_list(fb->fw, &fbinfo,
++		ret = rpi_firmware_property_list(fb->fbdev->fw, &fbinfo,
+ 						 sizeof(fbinfo));
+ 		if (ret) {
+ 			dev_err(info->device,
+@@ -439,7 +535,10 @@ static int bcm2708_fb_setcolreg(unsigned
+ 			packet->length = regno + 1;
+ 			memcpy(packet->cmap, fb->gpu_cmap,
+ 			       sizeof(packet->cmap));
+-			ret = rpi_firmware_property(fb->fw,
++
++			set_display_num(fb);
++
++			ret = rpi_firmware_property(fb->fbdev->fw,
+ 						    RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE,
+ 						    packet,
+ 						    (2 + packet->length) * sizeof(u32));
+@@ -478,8 +577,11 @@ static int bcm2708_fb_blank(int blank_mo
+ 		return -EINVAL;
+ 	}
+ 
+-	ret = rpi_firmware_property(fb->fw, RPI_FIRMWARE_FRAMEBUFFER_BLANK,
++	set_display_num(fb);
++
++	ret = rpi_firmware_property(fb->fbdev->fw, RPI_FIRMWARE_FRAMEBUFFER_BLANK,
+ 				    &value, sizeof(value));
++
+ 	if (ret)
+ 		dev_err(info->device, "%s(%d) failed: %d\n", __func__,
+ 			blank_mode, ret);
+@@ -496,12 +598,14 @@ static int bcm2708_fb_pan_display(struct
+ 	info->var.yoffset = var->yoffset;
+ 	result = bcm2708_fb_set_par(info);
+ 	if (result != 0)
+-		pr_err("%s(%d,%d) returns=%d\n", __func__, var->xoffset,
++		pr_err("%s(%u,%u) returns=%d\n", __func__, var->xoffset,
+ 		       var->yoffset, result);
+ 	return result;
+ }
+ 
+ static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
++static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd,
++			 unsigned long arg)
+ {
+ 	struct bcm2708_fb *fb = to_bcm2708(info);
+ 	u32 dummy = 0;
+@@ -509,7 +613,9 @@ static int bcm2708_ioctl(struct fb_info
+ 
+ 	switch (cmd) {
+ 	case FBIO_WAITFORVSYNC:
+-		ret = rpi_firmware_property(fb->fw,
++		set_display_num(fb);
++
++		ret = rpi_firmware_property(fb->fbdev->fw,
+ 					    RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC,
+ 					    &dummy, sizeof(dummy));
+ 		break;
+@@ -526,23 +632,22 @@ static int bcm2708_ioctl(struct fb_info
+ static void bcm2708_fb_fillrect(struct fb_info *info,
+ 				const struct fb_fillrect *rect)
+ {
+-	/* (is called) print_debug("bcm2708_fb_fillrect\n"); */
+ 	cfb_fillrect(info, rect);
+ }
+ 
+ /* A helper function for configuring dma control block */
+ static void set_dma_cb(struct bcm2708_dma_cb *cb,
+-		       int        burst_size,
+-		       dma_addr_t dst,
+-		       int        dst_stride,
+-		       dma_addr_t src,
+-		       int        src_stride,
+-		       int        w,
+-		       int        h)
++		int        burst_size,
++		dma_addr_t dst,
++		int        dst_stride,
++		dma_addr_t src,
++		int        src_stride,
++		int        w,
++		int        h)
+ {
+ 	cb->info = BCM2708_DMA_BURST(burst_size) | BCM2708_DMA_S_WIDTH |
+-		   BCM2708_DMA_S_INC | BCM2708_DMA_D_WIDTH |
+-		   BCM2708_DMA_D_INC | BCM2708_DMA_TDMODE;
++		BCM2708_DMA_S_INC | BCM2708_DMA_D_WIDTH |
++		BCM2708_DMA_D_INC | BCM2708_DMA_TDMODE;
+ 	cb->dst = dst;
+ 	cb->src = src;
+ 	/*
+@@ -560,15 +665,19 @@ static void bcm2708_fb_copyarea(struct f
+ 				const struct fb_copyarea *region)
+ {
+ 	struct bcm2708_fb *fb = to_bcm2708(info);
+-	struct bcm2708_dma_cb *cb = fb->cb_base;
++	struct bcm2708_fb_dev *fbdev = fb->fbdev;
++	struct bcm2708_dma_cb *cb = fbdev->cb_base;
+ 	int bytes_per_pixel = (info->var.bits_per_pixel + 7) >> 3;
+ 
+ 	/* Channel 0 supports larger bursts and is a bit faster */
+-	int burst_size = (fb->dma_chan == 0) ? 8 : 2;
++	int burst_size = (fbdev->dma_chan == 0) ? 8 : 2;
+ 	int pixels = region->width * region->height;
+ 
+-	/* Fallback to cfb_copyarea() if we don't like something */
+-	if (bytes_per_pixel > 4 ||
++	/* If DMA is currently in use (ie being used on another FB), then
++	 * rather than wait for it to finish, just use the cfb_copyarea
++	 */
++	if (!mutex_trylock(&fbdev->dma_mutex) ||
++	    bytes_per_pixel > 4 ||
+ 	    info->var.xres * info->var.yres > 1920 * 1200 ||
+ 	    region->width <= 0 || region->width > info->var.xres ||
+ 	    region->height <= 0 || region->height > info->var.yres ||
+@@ -595,8 +704,8 @@ static void bcm2708_fb_copyarea(struct f
+ 		 * 1920x1200 resolution at 32bpp pixel depth.
+ 		 */
+ 		int y;
+-		dma_addr_t control_block_pa = fb->cb_handle;
+-		dma_addr_t scratchbuf = fb->cb_handle + 16 * 1024;
++		dma_addr_t control_block_pa = fbdev->cb_handle;
++		dma_addr_t scratchbuf = fbdev->cb_handle + 16 * 1024;
+ 		int scanline_size = bytes_per_pixel * region->width;
+ 		int scanlines_per_cb = (64 * 1024 - 16 * 1024) / scanline_size;
+ 
+@@ -646,10 +755,10 @@ static void bcm2708_fb_copyarea(struct f
+ 		}
+ 		set_dma_cb(cb, burst_size,
+ 			   fb->fb_bus_address + dy * fb->fb.fix.line_length +
+-						   bytes_per_pixel * region->dx,
++			   bytes_per_pixel * region->dx,
+ 			   stride,
+ 			   fb->fb_bus_address + sy * fb->fb.fix.line_length +
+-						   bytes_per_pixel * region->sx,
++			   bytes_per_pixel * region->sx,
+ 			   stride,
+ 			   region->width * bytes_per_pixel,
+ 			   region->height);
+@@ -659,32 +768,33 @@ static void bcm2708_fb_copyarea(struct f
+ 	cb->next = 0;
+ 
+ 	if (pixels < dma_busy_wait_threshold) {
+-		bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
+-		bcm_dma_wait_idle(fb->dma_chan_base);
++		bcm_dma_start(fbdev->dma_chan_base, fbdev->cb_handle);
++		bcm_dma_wait_idle(fbdev->dma_chan_base);
+ 	} else {
+-		void __iomem *dma_chan = fb->dma_chan_base;
++		void __iomem *local_dma_chan = fbdev->dma_chan_base;
+ 
+ 		cb->info |= BCM2708_DMA_INT_EN;
+-		bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
+-		while (bcm_dma_is_busy(dma_chan)) {
+-			wait_event_interruptible(fb->dma_waitq,
+-						 !bcm_dma_is_busy(dma_chan));
++		bcm_dma_start(fbdev->dma_chan_base, fbdev->cb_handle);
++		while (bcm_dma_is_busy(local_dma_chan)) {
++			wait_event_interruptible(fbdev->dma_waitq,
++						 !bcm_dma_is_busy(local_dma_chan));
+ 		}
+-		fb->stats.dma_irqs++;
++		fbdev->dma_stats.dma_irqs++;
+ 	}
+-	fb->stats.dma_copies++;
++	fbdev->dma_stats.dma_copies++;
++
++	mutex_unlock(&fbdev->dma_mutex);
+ }
+ 
+ static void bcm2708_fb_imageblit(struct fb_info *info,
+ 				 const struct fb_image *image)
+ {
+-	/* (is called) print_debug("bcm2708_fb_imageblit\n"); */
+ 	cfb_imageblit(info, image);
+ }
+ 
+ static irqreturn_t bcm2708_fb_dma_irq(int irq, void *cxt)
+ {
+-	struct bcm2708_fb *fb = cxt;
++	struct bcm2708_fb_dev *fbdev = cxt;
+ 
+ 	/* FIXME: should read status register to check if this is
+ 	 * actually interrupting us or not, in case this interrupt
+@@ -694,9 +804,9 @@ static irqreturn_t bcm2708_fb_dma_irq(in
+ 	 */
+ 
+ 	/* acknowledge the interrupt */
+-	writel(BCM2708_DMA_INT, fb->dma_chan_base + BCM2708_DMA_CS);
++	writel(BCM2708_DMA_INT, fbdev->dma_chan_base + BCM2708_DMA_CS);
+ 
+-	wake_up(&fb->dma_waitq);
++	wake_up(&fbdev->dma_waitq);
+ 	return IRQ_HANDLED;
+ }
+ 
+@@ -729,11 +839,23 @@ static int bcm2708_fb_register(struct bc
+ 	fb->fb.fix.ywrapstep = 0;
+ 	fb->fb.fix.accel = FB_ACCEL_NONE;
+ 
+-	fb->fb.var.xres = fbwidth;
+-	fb->fb.var.yres = fbheight;
+-	fb->fb.var.xres_virtual = fbwidth;
+-	fb->fb.var.yres_virtual = fbheight;
+-	fb->fb.var.bits_per_pixel = fbdepth;
++	/* If we have data from the VC4 on FB's, use that, otherwise use the
++	 * module parameters
++	 */
++	if (fb->display_settings.width) {
++		fb->fb.var.xres = fb->display_settings.width;
++		fb->fb.var.yres = fb->display_settings.height;
++		fb->fb.var.xres_virtual = fb->fb.var.xres;
++		fb->fb.var.yres_virtual = fb->fb.var.yres;
++		fb->fb.var.bits_per_pixel = fb->display_settings.depth;
++	} else {
++		fb->fb.var.xres = fbwidth;
++		fb->fb.var.yres = fbheight;
++		fb->fb.var.xres_virtual = fbwidth;
++		fb->fb.var.yres_virtual = fbheight;
++		fb->fb.var.bits_per_pixel = fbdepth;
++	}
++
+ 	fb->fb.var.vmode = FB_VMODE_NONINTERLACED;
+ 	fb->fb.var.activate = FB_ACTIVATE_NOW;
+ 	fb->fb.var.nonstd = 0;
+@@ -749,26 +871,23 @@ static int bcm2708_fb_register(struct bc
+ 	fb->fb.monspecs.dclkmax = 100000000;
+ 
+ 	bcm2708_fb_set_bitfields(&fb->fb.var);
+-	init_waitqueue_head(&fb->dma_waitq);
+ 
+ 	/*
+ 	 * Allocate colourmap.
+ 	 */
+-
+ 	fb_set_var(&fb->fb, &fb->fb.var);
++
+ 	ret = bcm2708_fb_set_par(&fb->fb);
++
+ 	if (ret)
+ 		return ret;
+ 
+-	print_debug("BCM2708FB: registering framebuffer (%dx%d@%d) (%d)\n",
+-		    fbwidth, fbheight, fbdepth, fbswap);
+-
+ 	ret = register_framebuffer(&fb->fb);
+-	print_debug("BCM2708FB: register framebuffer (%d)\n", ret);
++
+ 	if (ret == 0)
+ 		goto out;
+ 
+-	print_debug("BCM2708FB: cannot register framebuffer (%d)\n", ret);
++	dev_warn(fb->fb.dev, "Unable to register framebuffer (%d)\n", ret);
+ out:
+ 	return ret;
+ }
+@@ -777,10 +896,18 @@ static int bcm2708_fb_probe(struct platf
+ {
+ 	struct device_node *fw_np;
+ 	struct rpi_firmware *fw;
+-	struct bcm2708_fb *fb;
+-	int ret;
++	int ret, i;
++	u32 num_displays;
++	struct bcm2708_fb_dev *fbdev;
++	struct { u32 base, length; } gpu_mem;
++
++	fbdev = devm_kzalloc(&dev->dev, sizeof(*fbdev), GFP_KERNEL);
++
++	if (!fbdev)
++		return -ENOMEM;
+ 
+ 	fw_np = of_parse_phandle(dev->dev.of_node, "firmware", 0);
++
+ /* Remove comment when booting without Device Tree is no longer supported
+  *	if (!fw_np) {
+  *		dev_err(&dev->dev, "Missing firmware node\n");
+@@ -788,90 +915,154 @@ static int bcm2708_fb_probe(struct platf
+  *	}
+  */
+ 	fw = rpi_firmware_get(fw_np);
++	fbdev->fw = fw;
++
+ 	if (!fw)
+ 		return -EPROBE_DEFER;
+ 
+-	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+-	if (!fb) {
+-		ret = -ENOMEM;
+-		goto free_region;
++	ret = rpi_firmware_property(fw,
++				    RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS,
++				    &num_displays, sizeof(u32));
++
++	/* If we fail to get the number of displays, or it returns 0, then
++	 * assume old firmware that doesn't have the mailbox call, so just
++	 * set one display
++	 */
++	if (ret || num_displays == 0) {
++		num_displays = 1;
++		dev_err(&dev->dev,
++			"Unable to determine number of FB's. Assuming 1\n");
++		ret = 0;
++	} else {
++		fbdev->firmware_supports_multifb = 1;
++	}
++
++	if (num_displays > MAX_FRAMEBUFFERS) {
++		dev_warn(&dev->dev,
++			 "More displays reported from firmware than supported in driver (%u vs %u)",
++			 num_displays, MAX_FRAMEBUFFERS);
++		num_displays = MAX_FRAMEBUFFERS;
+ 	}
+ 
+-	fb->fw = fw;
+-	bcm2708_fb_debugfs_init(fb);
++	dev_info(&dev->dev, "FB found %d display(s)\n", num_displays);
++
++	/* Set up the DMA information. Note we have just one set of DMA
++	 * parameters to work with all the FB's so requires synchronising when
++	 * being used
++	 */
++
++	mutex_init(&fbdev->dma_mutex);
+ 
+-	fb->cb_base = dma_alloc_wc(&dev->dev, SZ_64K,
+-					     &fb->cb_handle, GFP_KERNEL);
+-	if (!fb->cb_base) {
++	fbdev->cb_base = dma_alloc_wc(&dev->dev, SZ_64K,
++						&fbdev->cb_handle,
++						GFP_KERNEL);
++	if (!fbdev->cb_base) {
+ 		dev_err(&dev->dev, "cannot allocate DMA CBs\n");
+ 		ret = -ENOMEM;
+ 		goto free_fb;
+ 	}
+ 
+-	pr_info("BCM2708FB: allocated DMA memory %pad\n", &fb->cb_handle);
+-
+ 	ret = bcm_dma_chan_alloc(BCM_DMA_FEATURE_BULK,
+-				 &fb->dma_chan_base, &fb->dma_irq);
++				 &fbdev->dma_chan_base,
++				 &fbdev->dma_irq);
+ 	if (ret < 0) {
+-		dev_err(&dev->dev, "couldn't allocate a DMA channel\n");
++		dev_err(&dev->dev, "Couldn't allocate a DMA channel\n");
+ 		goto free_cb;
+ 	}
+-	fb->dma_chan = ret;
++	fbdev->dma_chan = ret;
+ 
+-	ret = request_irq(fb->dma_irq, bcm2708_fb_dma_irq,
+-			  0, "bcm2708_fb dma", fb);
++	ret = request_irq(fbdev->dma_irq, bcm2708_fb_dma_irq,
++			  0, "bcm2708_fb DMA", fbdev);
+ 	if (ret) {
+-		pr_err("%s: failed to request DMA irq\n", __func__);
++		dev_err(&dev->dev,
++			"Failed to request DMA irq\n");
+ 		goto free_dma_chan;
+ 	}
+ 
+-	pr_info("BCM2708FB: allocated DMA channel %d\n", fb->dma_chan);
++	rpi_firmware_property(fbdev->fw,
++			      RPI_FIRMWARE_GET_VC_MEMORY,
++			      &gpu_mem, sizeof(gpu_mem));
++
++	for (i = 0; i < num_displays; i++) {
++		struct bcm2708_fb *fb = &fbdev->displays[i];
++
++		fb->display_settings.display_num = i;
++		fb->dev = dev;
++		fb->fb.device = &dev->dev;
++		fb->fbdev = fbdev;
++
++		fb->gpu.base = gpu_mem.base;
++		fb->gpu.length = gpu_mem.length;
++
++		if (fbdev->firmware_supports_multifb) {
++			ret = rpi_firmware_property(fw,
++						    RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_SETTINGS,
++						    &fb->display_settings,
++						    GET_DISPLAY_SETTINGS_PAYLOAD_SIZE);
++		} else {
++			memset(&fb->display_settings, 0,
++			       sizeof(fb->display_settings));
++		}
+ 
+-	fb->dev = dev;
+-	fb->fb.device = &dev->dev;
++		ret = bcm2708_fb_register(fb);
+ 
+-	/* failure here isn't fatal, but we'll fail in vc_mem_copy if
+-	 * fb->gpu is not valid
+-	 */
+-	rpi_firmware_property(fb->fw, RPI_FIRMWARE_GET_VC_MEMORY, &fb->gpu,
+-			      sizeof(fb->gpu));
++		if (ret == 0) {
++			bcm2708_fb_debugfs_init(fb);
+ 
+-	ret = bcm2708_fb_register(fb);
+-	if (ret == 0) {
+-		platform_set_drvdata(dev, fb);
+-		goto out;
++			fbdev->num_displays++;
++
++			dev_info(&dev->dev,
++				 "Registered framebuffer for display %u, size %ux%u\n",
++				 fb->display_settings.display_num,
++				 fb->fb.var.xres,
++				 fb->fb.var.yres);
++		} else {
++			// Use this to flag if this FB entry is in use.
++			fb->fbdev = NULL;
++		}
++	}
++
++	// Did we actually successfully create any FB's?
++	if (fbdev->num_displays) {
++		init_waitqueue_head(&fbdev->dma_waitq);
++		platform_set_drvdata(dev, fbdev);
++		return ret;
+ 	}
+ 
+ free_dma_chan:
+-	bcm_dma_chan_free(fb->dma_chan);
++	bcm_dma_chan_free(fbdev->dma_chan);
+ free_cb:
+-	dma_free_wc(&dev->dev, SZ_64K, fb->cb_base, fb->cb_handle);
++	dma_free_wc(&dev->dev, SZ_64K, fbdev->cb_base,
++			      fbdev->cb_handle);
+ free_fb:
+-	kfree(fb);
+-free_region:
+ 	dev_err(&dev->dev, "probe failed, err %d\n", ret);
+-out:
++
+ 	return ret;
+ }
+ 
+ static int bcm2708_fb_remove(struct platform_device *dev)
+ {
+-	struct bcm2708_fb *fb = platform_get_drvdata(dev);
++	struct bcm2708_fb_dev *fbdev = platform_get_drvdata(dev);
++	int i;
+ 
+ 	platform_set_drvdata(dev, NULL);
+ 
+-	if (fb->fb.screen_base)
+-		iounmap(fb->fb.screen_base);
+-	unregister_framebuffer(&fb->fb);
+-
+-	dma_free_wc(&dev->dev, SZ_64K, fb->cb_base, fb->cb_handle);
+-	bcm_dma_chan_free(fb->dma_chan);
+-
+-	bcm2708_fb_debugfs_deinit(fb);
++	for (i = 0; i < fbdev->num_displays; i++) {
++		if (fbdev->displays[i].fb.screen_base)
++			iounmap(fbdev->displays[i].fb.screen_base);
++
++		if (fbdev->displays[i].fbdev) {
++			unregister_framebuffer(&fbdev->displays[i].fb);
++			bcm2708_fb_debugfs_deinit(&fbdev->displays[i]);
++		}
++	}
+ 
+-	free_irq(fb->dma_irq, fb);
++	dma_free_wc(&dev->dev, SZ_64K, fbdev->cb_base,
++			      fbdev->cb_handle);
++	bcm_dma_chan_free(fbdev->dma_chan);
++	free_irq(fbdev->dma_irq, fbdev);
+ 
+-	kfree(fb);
++	mutex_destroy(&fbdev->dma_mutex);
+ 
+ 	return 0;
+ }
+@@ -886,10 +1077,10 @@ static struct platform_driver bcm2708_fb
+ 	.probe = bcm2708_fb_probe,
+ 	.remove = bcm2708_fb_remove,
+ 	.driver = {
+-		   .name = DRIVER_NAME,
+-		   .owner = THIS_MODULE,
+-		   .of_match_table = bcm2708_fb_of_match_table,
+-		   },
++		  .name = DRIVER_NAME,
++		  .owner = THIS_MODULE,
++		  .of_match_table = bcm2708_fb_of_match_table,
++		  },
+ };
+ 
+ static int __init bcm2708_fb_init(void)
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -105,9 +105,15 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_VIRTUAL_OFFSET =         0x00040009,
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_OVERSCAN =               0x0004000a,
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_PALETTE =                0x0004000b,
++	RPI_FIRMWARE_FRAMEBUFFER_GET_LAYER =                  0x0004000c,
++	RPI_FIRMWARE_FRAMEBUFFER_GET_TRANSFORM =              0x0004000d,
++	RPI_FIRMWARE_FRAMEBUFFER_GET_VSYNC =                  0x0004000e,
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF =               0x0004000f,
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF =            0x00040010,
+ 	RPI_FIRMWARE_FRAMEBUFFER_RELEASE =                    0x00048001,
++	RPI_FIRMWARE_FRAMEBUFFER_SET_DISPLAY_NUM =            0x00048013,
++	RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS =           0x00040013,
++	RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_SETTINGS =       0x00040014,
+ 	RPI_FIRMWARE_FRAMEBUFFER_TEST_PHYSICAL_WIDTH_HEIGHT = 0x00044003,
+ 	RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_WIDTH_HEIGHT =  0x00044004,
+ 	RPI_FIRMWARE_FRAMEBUFFER_TEST_DEPTH =                 0x00044005,
+@@ -116,6 +122,8 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_OFFSET =        0x00044009,
+ 	RPI_FIRMWARE_FRAMEBUFFER_TEST_OVERSCAN =              0x0004400a,
+ 	RPI_FIRMWARE_FRAMEBUFFER_TEST_PALETTE =               0x0004400b,
++	RPI_FIRMWARE_FRAMEBUFFER_TEST_LAYER =                 0x0004400c,
++	RPI_FIRMWARE_FRAMEBUFFER_TEST_TRANSFORM =             0x0004400d,
+ 	RPI_FIRMWARE_FRAMEBUFFER_TEST_VSYNC =                 0x0004400e,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT =  0x00048003,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT =   0x00048004,
+@@ -126,9 +134,12 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET =         0x00048009,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN =               0x0004800a,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE =                0x0004800b,
++
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF =               0x0004801f,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_GPIOVIRTBUF =            0x00048020,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC =                  0x0004800e,
++	RPI_FIRMWARE_FRAMEBUFFER_SET_LAYER =                  0x0004800c,
++	RPI_FIRMWARE_FRAMEBUFFER_SET_TRANSFORM =              0x0004800d,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT =              0x0004800f,
+ 
+ 	RPI_FIRMWARE_VCHIQ_INIT =                             0x00048010,
+@@ -137,6 +148,8 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_GET_DMA_CHANNELS =                       0x00060001,
+ };
+ 
++#define GET_DISPLAY_SETTINGS_PAYLOAD_SIZE 64
++
+ #if IS_ENABLED(CONFIG_RASPBERRYPI_FIRMWARE)
+ int rpi_firmware_property(struct rpi_firmware *fw,
+ 			  u32 tag, void *data, size_t len);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0067-fbdev-add-FBIOCOPYAREA-ioctl.patch b/target/linux/bcm27xx/patches-5.15/950-0067-fbdev-add-FBIOCOPYAREA-ioctl.patch
new file mode 100644
index 0000000000..5f2a237e2b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0067-fbdev-add-FBIOCOPYAREA-ioctl.patch
@@ -0,0 +1,337 @@
+From 32fe1d00f572b4f41260e0ddcf88b15091ec2564 Mon Sep 17 00:00:00 2001
+From: Siarhei Siamashka <siarhei.siamashka@gmail.com>
+Date: Mon, 17 Jun 2013 13:32:11 +0300
+Subject: [PATCH] fbdev: add FBIOCOPYAREA ioctl
+
+Based on the patch authored by Ali Gholami Rudi at
+    https://lkml.org/lkml/2009/7/13/153
+
+Provide an ioctl for userspace applications, but only if this operation
+is hardware accelerated (otherwide it does not make any sense).
+
+Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
+
+bcm2708_fb: Add ioctl for reading gpu memory through dma
+
+video: bcm2708_fb: Add compat_ioctl support.
+
+When using a 64 bit kernel with 32 bit userspace we need
+compat ioctl handling for FBIODMACOPY as one of the
+parameters is a pointer.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/video/fbdev/bcm2708_fb.c | 170 ++++++++++++++++++++++++++++++-
+ drivers/video/fbdev/core/fbmem.c |  35 +++++++
+ include/uapi/linux/fb.h          |  12 +++
+ 3 files changed, 213 insertions(+), 4 deletions(-)
+
+--- a/drivers/video/fbdev/bcm2708_fb.c
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -32,8 +32,10 @@
+ #include <linux/printk.h>
+ #include <linux/console.h>
+ #include <linux/debugfs.h>
++#include <linux/uaccess.h>
+ #include <linux/io.h>
+ #include <linux/dma-mapping.h>
++#include <linux/cred.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ #include <linux/mutex.h>
+ 
+@@ -184,9 +186,6 @@ static int bcm2708_fb_debugfs_init(struc
+ 
+ 	fb->debugfs_subdir = debugfs_create_dir(buf, fb->debugfs_dir);
+ 
+-	debugfs_create_regset32("stats", 0444, fb->debugfs_dir,
+-				&fb->stats.regset);
+-
+ 	if (!fb->debugfs_subdir) {
+ 		dev_warn(fb->fb.dev, "%s: could not create debugfs entry %u\n",
+ 			 __func__, fb->display_settings.display_num);
+@@ -603,7 +602,110 @@ static int bcm2708_fb_pan_display(struct
+ 	return result;
+ }
+ 
+-static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
++static void dma_memcpy(struct bcm2708_fb *fb, dma_addr_t dst, dma_addr_t src,
++		       int size)
++{
++	struct bcm2708_fb_dev *fbdev = fb->fbdev;
++	struct bcm2708_dma_cb *cb = fbdev->cb_base;
++	int burst_size = (fbdev->dma_chan == 0) ? 8 : 2;
++
++	cb->info = BCM2708_DMA_BURST(burst_size) | BCM2708_DMA_S_WIDTH |
++		   BCM2708_DMA_S_INC | BCM2708_DMA_D_WIDTH |
++		   BCM2708_DMA_D_INC;
++	cb->dst = dst;
++	cb->src = src;
++	cb->length = size;
++	cb->stride = 0;
++	cb->pad[0] = 0;
++	cb->pad[1] = 0;
++	cb->next = 0;
++
++	// Not sure what to do if this gets a signal whilst waiting
++	if (mutex_lock_interruptible(&fbdev->dma_mutex))
++		return;
++
++	if (size < dma_busy_wait_threshold) {
++		bcm_dma_start(fbdev->dma_chan_base, fbdev->cb_handle);
++		bcm_dma_wait_idle(fbdev->dma_chan_base);
++	} else {
++		void __iomem *local_dma_chan = fbdev->dma_chan_base;
++
++		cb->info |= BCM2708_DMA_INT_EN;
++		bcm_dma_start(fbdev->dma_chan_base, fbdev->cb_handle);
++		while (bcm_dma_is_busy(local_dma_chan)) {
++			wait_event_interruptible(fbdev->dma_waitq,
++						 !bcm_dma_is_busy(local_dma_chan));
++		}
++		fbdev->dma_stats.dma_irqs++;
++	}
++	fbdev->dma_stats.dma_copies++;
++
++	mutex_unlock(&fbdev->dma_mutex);
++}
++
++/* address with no aliases */
++#define INTALIAS_NORMAL(x) ((x) & ~0xc0000000)
++/* cache coherent but non-allocating in L1 and L2 */
++#define INTALIAS_L1L2_NONALLOCATING(x) (((x) & ~0xc0000000) | 0x80000000)
++
++static long vc_mem_copy(struct bcm2708_fb *fb, struct fb_dmacopy *ioparam)
++{
++	size_t size = PAGE_SIZE;
++	u32 *buf = NULL;
++	dma_addr_t bus_addr;
++	long rc = 0;
++	size_t offset;
++
++	/* restrict this to root user */
++	if (!uid_eq(current_euid(), GLOBAL_ROOT_UID)) {
++		rc = -EFAULT;
++		goto out;
++	}
++
++	if (!fb->gpu.base || !fb->gpu.length) {
++		pr_err("[%s]: Unable to determine gpu memory (%x,%x)\n",
++		       __func__, fb->gpu.base, fb->gpu.length);
++		return -EFAULT;
++	}
++
++	if (INTALIAS_NORMAL(ioparam->src) < fb->gpu.base ||
++	    INTALIAS_NORMAL(ioparam->src) >= fb->gpu.base + fb->gpu.length) {
++		pr_err("[%s]: Invalid memory access %x (%x-%x)", __func__,
++		       INTALIAS_NORMAL(ioparam->src), fb->gpu.base,
++		       fb->gpu.base + fb->gpu.length);
++		return -EFAULT;
++	}
++
++	buf = dma_alloc_coherent(fb->fb.device, PAGE_ALIGN(size), &bus_addr,
++				 GFP_ATOMIC);
++	if (!buf) {
++		pr_err("[%s]: failed to dma_alloc_coherent(%zd)\n", __func__,
++		       size);
++		rc = -ENOMEM;
++		goto out;
++	}
++
++	for (offset = 0; offset < ioparam->length; offset += size) {
++		size_t remaining = ioparam->length - offset;
++		size_t s = min(size, remaining);
++		u8 *p = (u8 *)((uintptr_t)ioparam->src + offset);
++		u8 *q = (u8 *)ioparam->dst + offset;
++
++		dma_memcpy(fb, bus_addr,
++			   INTALIAS_L1L2_NONALLOCATING((dma_addr_t)p), size);
++		if (copy_to_user(q, buf, s) != 0) {
++			pr_err("[%s]: failed to copy-to-user\n", __func__);
++			rc = -EFAULT;
++			goto out;
++		}
++	}
++out:
++	if (buf)
++		dma_free_coherent(fb->fb.device, PAGE_ALIGN(size), buf,
++				  bus_addr);
++	return rc;
++}
++
+ static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd,
+ 			 unsigned long arg)
+ {
+@@ -619,6 +721,21 @@ static int bcm2708_ioctl(struct fb_info
+ 					    RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC,
+ 					    &dummy, sizeof(dummy));
+ 		break;
++
++	case FBIODMACOPY:
++	{
++		struct fb_dmacopy ioparam;
++		/* Get the parameter data.
++		 */
++		if (copy_from_user
++		    (&ioparam, (void *)arg, sizeof(ioparam))) {
++			pr_err("[%s]: failed to copy-from-user\n", __func__);
++			ret = -EFAULT;
++			break;
++		}
++		ret = vc_mem_copy(fb, &ioparam);
++		break;
++	}
+ 	default:
+ 		dev_dbg(info->device, "Unknown ioctl 0x%x\n", cmd);
+ 		return -ENOTTY;
+@@ -629,6 +746,48 @@ static int bcm2708_ioctl(struct fb_info
+ 
+ 	return ret;
+ }
++
++#ifdef CONFIG_COMPAT
++struct fb_dmacopy32 {
++	compat_uptr_t dst;
++	__u32 src;
++	__u32 length;
++};
++
++#define FBIODMACOPY32		_IOW('z', 0x22, struct fb_dmacopy32)
++
++static int bcm2708_compat_ioctl(struct fb_info *info, unsigned int cmd,
++				unsigned long arg)
++{
++	struct bcm2708_fb *fb = to_bcm2708(info);
++	int ret;
++
++	switch (cmd) {
++	case FBIODMACOPY32:
++	{
++		struct fb_dmacopy32 param32;
++		struct fb_dmacopy param;
++		/* Get the parameter data.
++		 */
++		if (copy_from_user(&param32, (void *)arg, sizeof(param32))) {
++			pr_err("[%s]: failed to copy-from-user\n", __func__);
++			ret = -EFAULT;
++			break;
++		}
++		param.dst = compat_ptr(param32.dst);
++		param.src = param32.src;
++		param.length = param32.length;
++		ret = vc_mem_copy(fb, &param);
++		break;
++	}
++	default:
++		ret = bcm2708_ioctl(info, cmd, arg);
++		break;
++	}
++	return ret;
++}
++#endif
++
+ static void bcm2708_fb_fillrect(struct fb_info *info,
+ 				const struct fb_fillrect *rect)
+ {
+@@ -821,6 +980,9 @@ static struct fb_ops bcm2708_fb_ops = {
+ 	.fb_imageblit = bcm2708_fb_imageblit,
+ 	.fb_pan_display = bcm2708_fb_pan_display,
+ 	.fb_ioctl = bcm2708_ioctl,
++#ifdef CONFIG_COMPAT
++	.fb_compat_ioctl = bcm2708_compat_ioctl,
++#endif
+ };
+ 
+ static int bcm2708_fb_register(struct bcm2708_fb *fb)
+--- a/drivers/video/fbdev/core/fbmem.c
++++ b/drivers/video/fbdev/core/fbmem.c
+@@ -1086,6 +1086,30 @@ fb_blank(struct fb_info *info, int blank
+ }
+ EXPORT_SYMBOL(fb_blank);
+ 
++static int fb_copyarea_user(struct fb_info *info,
++			    struct fb_copyarea *copy)
++{
++	int ret = 0;
++	lock_fb_info(info);
++	if (copy->dx >= info->var.xres ||
++	    copy->sx >= info->var.xres ||
++	    copy->width > info->var.xres ||
++	    copy->dy >= info->var.yres ||
++	    copy->sy >= info->var.yres ||
++	    copy->height > info->var.yres ||
++	    copy->dx + copy->width > info->var.xres ||
++	    copy->sx + copy->width > info->var.xres ||
++	    copy->dy + copy->height > info->var.yres ||
++	    copy->sy + copy->height > info->var.yres) {
++		ret = -EINVAL;
++		goto out;
++	}
++	info->fbops->fb_copyarea(info, copy);
++out:
++	unlock_fb_info(info);
++	return ret;
++}
++
+ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
+ 			unsigned long arg)
+ {
+@@ -1094,6 +1118,7 @@ static long do_fb_ioctl(struct fb_info *
+ 	struct fb_fix_screeninfo fix;
+ 	struct fb_cmap cmap_from;
+ 	struct fb_cmap_user cmap;
++	struct fb_copyarea copy;
+ 	void __user *argp = (void __user *)arg;
+ 	long ret = 0;
+ 
+@@ -1169,6 +1194,15 @@ static long do_fb_ioctl(struct fb_info *
+ 		unlock_fb_info(info);
+ 		console_unlock();
+ 		break;
++	case FBIOCOPYAREA:
++		if (info->flags & FBINFO_HWACCEL_COPYAREA) {
++			/* only provide this ioctl if it is accelerated */
++			if (copy_from_user(&copy, argp, sizeof(copy)))
++				return -EFAULT;
++			ret = fb_copyarea_user(info, &copy);
++			break;
++		}
++		fallthrough;
+ 	default:
+ 		lock_fb_info(info);
+ 		fb = info->fbops;
+@@ -1308,6 +1342,7 @@ static long fb_compat_ioctl(struct file
+ 	case FBIOPAN_DISPLAY:
+ 	case FBIOGET_CON2FBMAP:
+ 	case FBIOPUT_CON2FBMAP:
++	case FBIOCOPYAREA:
+ 		arg = (unsigned long) compat_ptr(arg);
+ 		fallthrough;
+ 	case FBIOBLANK:
+--- a/include/uapi/linux/fb.h
++++ b/include/uapi/linux/fb.h
+@@ -35,6 +35,12 @@
+ #define FBIOPUT_MODEINFO        0x4617
+ #define FBIOGET_DISPINFO        0x4618
+ #define FBIO_WAITFORVSYNC	_IOW('F', 0x20, __u32)
++/*
++ * HACK: use 'z' in order not to clash with any other ioctl numbers which might
++ * be concurrently added to the mainline kernel
++ */
++#define FBIOCOPYAREA		_IOW('z', 0x21, struct fb_copyarea)
++#define FBIODMACOPY 		_IOW('z', 0x22, struct fb_dmacopy)
+ 
+ #define FB_TYPE_PACKED_PIXELS		0	/* Packed Pixels	*/
+ #define FB_TYPE_PLANES			1	/* Non interleaved planes */
+@@ -348,6 +354,12 @@ struct fb_copyarea {
+ 	__u32 sy;
+ };
+ 
++struct fb_dmacopy {
++	void *dst;
++	__u32 src;
++	__u32 length;
++};
++
+ struct fb_fillrect {
+ 	__u32 dx;	/* screen-relative */
+ 	__u32 dy;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0068-Speed-up-console-framebuffer-imageblit-function.patch b/target/linux/bcm27xx/patches-5.15/950-0068-Speed-up-console-framebuffer-imageblit-function.patch
new file mode 100644
index 0000000000..8c938f50bb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0068-Speed-up-console-framebuffer-imageblit-function.patch
@@ -0,0 +1,209 @@
+From 784d9bd9e4fecb27ceb3a0d0375dc13d1f35e44c Mon Sep 17 00:00:00 2001
+From: Harm Hanemaaijer <fgenfb@yahoo.com>
+Date: Thu, 20 Jun 2013 20:21:39 +0200
+Subject: [PATCH] Speed up console framebuffer imageblit function
+
+Especially on platforms with a slower CPU but a relatively high
+framebuffer fill bandwidth, like current ARM devices, the existing
+console monochrome imageblit function used to draw console text is
+suboptimal for common pixel depths such as 16bpp and 32bpp. The existing
+code is quite general and can deal with several pixel depths. By creating
+special case functions for 16bpp and 32bpp, by far the most common pixel
+formats used on modern systems, a significant speed-up is attained
+which can be readily felt on ARM-based devices like the Raspberry Pi
+and the Allwinner platform, but should help any platform using the
+fb layer.
+
+The special case functions allow constant folding, eliminating a number
+of instructions including divide operations, and allow the use of an
+unrolled loop, eliminating instructions with a variable shift size,
+reducing source memory access instructions, and eliminating excessive
+branching. These unrolled loops also allow much better code optimization
+by the C compiler. The code that selects which optimized variant is used
+is also simplified, eliminating integer divide instructions.
+
+The speed-up, measured by timing 'cat file.txt' in the console, varies
+between 40% and 70%, when testing on the Raspberry Pi and Allwinner
+ARM-based platforms, depending on font size and the pixel depth, with
+the greater benefit for 32bpp.
+
+Signed-off-by: Harm Hanemaaijer <fgenfb@yahoo.com>
+---
+ drivers/video/fbdev/core/cfbimgblt.c | 152 ++++++++++++++++++++++++++-
+ 1 file changed, 147 insertions(+), 5 deletions(-)
+
+--- a/drivers/video/fbdev/core/cfbimgblt.c
++++ b/drivers/video/fbdev/core/cfbimgblt.c
+@@ -28,6 +28,11 @@
+  *
+  *  Also need to add code to deal with cards endians that are different than
+  *  the native cpu endians. I also need to deal with MSB position in the word.
++ *  Modified by Harm Hanemaaijer (fgenfb@yahoo.com) 2013:
++ *  - Provide optimized versions of fast_imageblit for 16 and 32bpp that are
++ *    significantly faster than the previous implementation.
++ *  - Simplify the fast/slow_imageblit selection code, avoiding integer
++ *    divides.
+  */
+ #include <linux/module.h>
+ #include <linux/string.h>
+@@ -262,6 +267,133 @@ static inline void fast_imageblit(const
+ 	}
+ }	
+ 	
++/*
++ * Optimized fast_imageblit for bpp == 16. ppw = 2, bit_mask = 3 folded
++ * into the code, main loop unrolled.
++ */
++
++static inline void fast_imageblit16(const struct fb_image *image,
++				    struct fb_info *p, u8 __iomem * dst1,
++				    u32 fgcolor, u32 bgcolor)
++{
++	u32 fgx = fgcolor, bgx = bgcolor;
++	u32 spitch = (image->width + 7) / 8;
++	u32 end_mask, eorx;
++	const char *s = image->data, *src;
++	u32 __iomem *dst;
++	const u32 *tab = NULL;
++	int i, j, k;
++
++	tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le;
++
++	fgx <<= 16;
++	bgx <<= 16;
++	fgx |= fgcolor;
++	bgx |= bgcolor;
++
++	eorx = fgx ^ bgx;
++	k = image->width / 2;
++
++	for (i = image->height; i--;) {
++		dst = (u32 __iomem *) dst1;
++		src = s;
++
++		j = k;
++		while (j >= 4) {
++			u8 bits = *src;
++			end_mask = tab[(bits >> 6) & 3];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 4) & 3];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 2) & 3];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[bits & 3];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			src++;
++			j -= 4;
++		}
++		if (j != 0) {
++			u8 bits = *src;
++			end_mask = tab[(bits >> 6) & 3];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			if (j >= 2) {
++				end_mask = tab[(bits >> 4) & 3];
++				FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++				if (j == 3) {
++					end_mask = tab[(bits >> 2) & 3];
++					FB_WRITEL((end_mask & eorx) ^ bgx, dst);
++				}
++			}
++		}
++		dst1 += p->fix.line_length;
++		s += spitch;
++	}
++}
++
++/*
++ * Optimized fast_imageblit for bpp == 32. ppw = 1, bit_mask = 1 folded
++ * into the code, main loop unrolled.
++ */
++
++static inline void fast_imageblit32(const struct fb_image *image,
++				    struct fb_info *p, u8 __iomem * dst1,
++				    u32 fgcolor, u32 bgcolor)
++{
++	u32 fgx = fgcolor, bgx = bgcolor;
++	u32 spitch = (image->width + 7) / 8;
++	u32 end_mask, eorx;
++	const char *s = image->data, *src;
++	u32 __iomem *dst;
++	const u32 *tab = NULL;
++	int i, j, k;
++
++	tab = cfb_tab32;
++
++	eorx = fgx ^ bgx;
++	k = image->width;
++
++	for (i = image->height; i--;) {
++		dst = (u32 __iomem *) dst1;
++		src = s;
++
++		j = k;
++		while (j >= 8) {
++			u8 bits = *src;
++			end_mask = tab[(bits >> 7) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 6) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 5) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 4) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 3) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 2) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[(bits >> 1) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			end_mask = tab[bits & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++			src++;
++			j -= 8;
++		}
++		if (j != 0) {
++			u32 bits = (u32) * src;
++			while (j > 1) {
++				end_mask = tab[(bits >> 7) & 1];
++				FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
++				bits <<= 1;
++				j--;
++			}
++			end_mask = tab[(bits >> 7) & 1];
++			FB_WRITEL((end_mask & eorx) ^ bgx, dst);
++		}
++		dst1 += p->fix.line_length;
++		s += spitch;
++	}
++}
++
+ void cfb_imageblit(struct fb_info *p, const struct fb_image *image)
+ {
+ 	u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
+@@ -294,11 +426,21 @@ void cfb_imageblit(struct fb_info *p, co
+ 			bgcolor = image->bg_color;
+ 		}	
+ 		
+-		if (32 % bpp == 0 && !start_index && !pitch_index && 
+-		    ((width & (32/bpp-1)) == 0) &&
+-		    bpp >= 8 && bpp <= 32) 			
+-			fast_imageblit(image, p, dst1, fgcolor, bgcolor);
+-		else 
++		if (!start_index && !pitch_index) {
++			if (bpp == 32)
++				fast_imageblit32(image, p, dst1, fgcolor,
++						 bgcolor);
++			else if (bpp == 16 && (width & 1) == 0)
++				fast_imageblit16(image, p, dst1, fgcolor,
++						 bgcolor);
++			else if (bpp == 8 && (width & 3) == 0)
++				fast_imageblit(image, p, dst1, fgcolor,
++					       bgcolor);
++			else
++				slow_imageblit(image, p, dst1, fgcolor,
++					       bgcolor,
++					       start_index, pitch_index);
++		} else
+ 			slow_imageblit(image, p, dst1, fgcolor, bgcolor,
+ 					start_index, pitch_index);
+ 	} else
diff --git a/target/linux/bcm27xx/patches-5.15/950-0069-dmaengine-Add-support-for-BCM2708.patch b/target/linux/bcm27xx/patches-5.15/950-0069-dmaengine-Add-support-for-BCM2708.patch
new file mode 100644
index 0000000000..be7cc3d378
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0069-dmaengine-Add-support-for-BCM2708.patch
@@ -0,0 +1,640 @@
+From 75777d681d96172675877f9dd2c0b9df3bee50b9 Mon Sep 17 00:00:00 2001
+From: Florian Meier <florian.meier@koalo.de>
+Date: Fri, 22 Nov 2013 14:22:53 +0100
+Subject: [PATCH] dmaengine: Add support for BCM2708
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add support for DMA controller of BCM2708 as used in the Raspberry Pi.
+Currently it only supports cyclic DMA.
+
+Signed-off-by: Florian Meier <florian.meier@koalo.de>
+
+dmaengine: expand functionality by supporting scatter/gather transfers sdhci-bcm2708 and dma.c: fix for LITE channels
+
+DMA: fix cyclic LITE length overflow bug
+
+dmaengine: bcm2708: Remove chancnt affectations
+
+Mirror bcm2835-dma.c commit 9eba5536a7434c69d8c185d4bd1c70734d92287d:
+chancnt is already filled by dma_async_device_register, which uses the channel
+list to know how much channels there is.
+
+Since it's already filled, we can safely remove it from the drivers' probe
+function.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dmaengine: bcm2708: overwrite dreq only if it is not set
+
+dreq is set when the DMA channel is fetched from Device Tree.
+slave_id is set using dmaengine_slave_config().
+Only overwrite dreq with slave_id if it is not set.
+
+dreq/slave_id in the cyclic DMA case is not touched, because I don't
+have hardware to test with.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dmaengine: bcm2708: do device registration in the board file
+
+Don't register the device in the driver. Do it in the board file.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dmaengine: bcm2708: don't restrict DT support to ARCH_BCM2835
+
+Both ARCH_BCM2835 and ARCH_BCM270x are built with OF now.
+Add Device Tree support to the non ARCH_BCM2835 case.
+Use the same driver name regardless of architecture.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+BCM270x_DT: add bcm2835-dma entry
+
+Add Device Tree entry for bcm2835-dma.
+The entry doesn't contain any resources since they are handled
+by the arch/arm/mach-bcm270x/dma.c driver.
+In non-DT mode, don't add the device in the board file.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+bcm2708-dmaengine: Add debug options
+
+BCM270x: Add memory and irq resources to dmaengine device and DT
+
+Prepare for merging of the legacy DMA API arch driver dma.c
+with bcm2708-dmaengine by adding memory and irq resources both
+to platform file device and Device Tree node.
+Don't use BCM_DMAMAN_DRIVER_NAME so we don't have to include mach/dma.h
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dmaengine: bcm2708: Merge with arch dma.c driver and disable dma.c
+
+Merge the legacy DMA API driver with bcm2708-dmaengine.
+This is done so we can use bcm2708_fb on ARCH_BCM2835 (mailbox
+driver is also needed).
+
+Changes to the dma.c code:
+- Use BIT() macro.
+- Cutdown some comments to one line.
+- Add mutex to vc_dmaman and use this, since the dev lock is locked
+  during probing of the engine part.
+- Add global g_dmaman variable since drvdata is used by the engine part.
+- Restructure for readability:
+  vc_dmaman_chan_alloc()
+  vc_dmaman_chan_free()
+  bcm_dma_chan_free()
+- Restructure bcm_dma_chan_alloc() to simplify error handling.
+- Use device irq resources instead of hardcoded bcm_dma_irqs table.
+- Remove dev_dmaman_register() and code it directly.
+- Remove dev_dmaman_deregister() and code it directly.
+- Simplify bcm_dmaman_probe() using devm_* functions.
+- Get dmachans from DT if available.
+- Keep 'dma.dmachans' module argument name for backwards compatibility.
+
+Make it available on ARCH_BCM2835 as well.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dmaengine: bcm2708: set residue_granularity field
+
+bcm2708-dmaengine supports residue reporting at burst level
+but didn't report this via the residue_granularity field.
+
+Without this field set properly we get playback issues with I2S cards.
+
+dmaengine: bcm2708-dmaengine: Fix memory leak when stopping a running transfer
+
+bcm2708-dmaengine: Use more DMA channels (but not 12)
+
+1) Only the bcm2708_fb drivers uses the legacy DMA API, and
+it requires a BULK-capable channel, so all other types
+(FAST, NORMAL and LITE) can be made available to the regular
+DMA API.
+
+2) DMA channels 11-14 share an interrupt. The driver can't
+handle this, so don't use channels 12-14 (12 was used, probably
+because it appears to have an interrupt, but in reality that
+interrupt is for activity on ANY channel). This may explain
+a lockup encountered when running out of DMA channels.
+
+The combined effect of this patch is to leave 7 DMA channels
+available + channel 0 for bcm2708_fb via the legacy API.
+
+See: https://github.com/raspberrypi/linux/issues/1110
+     https://github.com/raspberrypi/linux/issues/1108
+
+dmaengine: bcm2708: Make legacy API available for bcm2835-dma
+
+bcm2708_fb uses the legacy DMA API, so in order to start using
+bcm2835-dma, bcm2835-dma has to support the legacy API. Make this
+possible by exporting bcm_dmaman_probe() and bcm_dmaman_remove().
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dmaengine: bcm2708: Change DT compatible string
+
+Both bcm2835-dma and bcm2708-dmaengine have the same compatible string.
+So change compatible to "brcm,bcm2708-dma".
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+dmaengine: bcm2708: Remove driver but keep legacy API
+
+Dropping non-DT support means we don't need this driver,
+but we still need the legacy DMA API.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+bcm2708-dmaengine - Fix arm64 portability/build issues
+
+dma-bcm2708: Fix module compilation of CONFIG_DMA_BCM2708
+
+bcm2708-dmaengine.c defines functions like bcm_dma_start which are
+defined as well in dma-bcm2708.h as inline versions when
+CONFIG_DMA_BCM2708 is not defined. This works fine when
+CONFIG_DMA_BCM2708 is built in, but when it is selected as module build
+fails with redefinition errors because in the build system when
+CONFIG_DMA_BCM2708 is selected as module, the macro becomes
+CONFIG_DMA_BCM2708_MODULE.
+
+This patch makes the header use CONFIG_DMA_BCM2708_MODULE too when
+available.
+
+Fixes https://github.com/raspberrypi/linux/issues/2056
+
+Signed-off-by: Andrei Gherzan <andrei@gherzan.com>
+---
+ drivers/dma/Kconfig                       |   6 +-
+ drivers/dma/Makefile                      |   1 +
+ drivers/dma/bcm2708-dmaengine.c           | 281 ++++++++++++++++++++++
+ include/linux/platform_data/dma-bcm2708.h | 143 +++++++++++
+ 4 files changed, 430 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/dma/bcm2708-dmaengine.c
+ create mode 100644 include/linux/platform_data/dma-bcm2708.h
+
+--- a/drivers/dma/Kconfig
++++ b/drivers/dma/Kconfig
+@@ -127,7 +127,7 @@ config BCM_SBA_RAID
+ 
+ config DMA_BCM2835
+ 	tristate "BCM2835 DMA engine support"
+-	depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709
++	depends on ARCH_BCM2835
+ 	select DMA_ENGINE
+ 	select DMA_VIRTUAL_CHANNELS
+ 
+@@ -683,6 +683,10 @@ config UNIPHIER_XDMAC
+ 	  UniPhier platform. This DMA controller can transfer data from
+ 	  memory to memory, memory to peripheral and peripheral to memory.
+ 
++config DMA_BCM2708
++	tristate "BCM2708 DMA legacy API support"
++	depends on DMA_BCM2835
++
+ config XGENE_DMA
+ 	tristate "APM X-Gene DMA support"
+ 	depends on ARCH_XGENE || COMPILE_TEST
+--- a/drivers/dma/Makefile
++++ b/drivers/dma/Makefile
+@@ -21,6 +21,7 @@ obj-$(CONFIG_AT_HDMAC) += at_hdmac.o
+ obj-$(CONFIG_AT_XDMAC) += at_xdmac.o
+ obj-$(CONFIG_AXI_DMAC) += dma-axi-dmac.o
+ obj-$(CONFIG_BCM_SBA_RAID) += bcm-sba-raid.o
++obj-$(CONFIG_DMA_BCM2708) += bcm2708-dmaengine.o
+ obj-$(CONFIG_DMA_BCM2835) += bcm2835-dma.o
+ obj-$(CONFIG_DMA_JZ4780) += dma-jz4780.o
+ obj-$(CONFIG_DMA_SA11X0) += sa11x0-dma.o
+--- /dev/null
++++ b/drivers/dma/bcm2708-dmaengine.c
+@@ -0,0 +1,281 @@
++/*
++ * BCM2708 legacy DMA API
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/list.h>
++#include <linux/module.h>
++#include <linux/platform_data/dma-bcm2708.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <linux/io.h>
++#include <linux/spinlock.h>
++
++#include "virt-dma.h"
++
++#define CACHE_LINE_MASK 31
++#define DEFAULT_DMACHAN_BITMAP 0x10  /* channel 4 only */
++
++/* valid only for channels 0 - 14, 15 has its own base address */
++#define BCM2708_DMA_CHAN(n)	((n) << 8) /* base address */
++#define BCM2708_DMA_CHANIO(dma_base, n) \
++	((void __iomem *)((char *)(dma_base) + BCM2708_DMA_CHAN(n)))
++
++struct vc_dmaman {
++	void __iomem *dma_base;
++	u32 chan_available; /* bitmap of available channels */
++	u32 has_feature[BCM_DMA_FEATURE_COUNT]; /* bitmap of feature presence */
++	struct mutex lock;
++};
++
++static struct device *dmaman_dev;	/* we assume there's only one! */
++static struct vc_dmaman *g_dmaman;	/* DMA manager */
++
++/* DMA Auxiliary Functions */
++
++/* A DMA buffer on an arbitrary boundary may separate a cache line into a
++   section inside the DMA buffer and another section outside it.
++   Even if we flush DMA buffers from the cache there is always the chance that
++   during a DMA someone will access the part of a cache line that is outside
++   the DMA buffer - which will then bring in unwelcome data.
++   Without being able to dictate our own buffer pools we must insist that
++   DMA buffers consist of a whole number of cache lines.
++*/
++extern int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len)
++{
++	int i;
++
++	for (i = 0; i < sg_len; i++) {
++		if (sg_ptr[i].offset & CACHE_LINE_MASK ||
++		    sg_ptr[i].length & CACHE_LINE_MASK)
++			return 0;
++	}
++
++	return 1;
++}
++EXPORT_SYMBOL_GPL(bcm_sg_suitable_for_dma);
++
++extern void bcm_dma_start(void __iomem *dma_chan_base,
++			  dma_addr_t control_block)
++{
++	dsb(sy);	/* ARM data synchronization (push) operation */
++
++	writel(control_block, dma_chan_base + BCM2708_DMA_ADDR);
++	writel(BCM2708_DMA_ACTIVE, dma_chan_base + BCM2708_DMA_CS);
++}
++EXPORT_SYMBOL_GPL(bcm_dma_start);
++
++extern void bcm_dma_wait_idle(void __iomem *dma_chan_base)
++{
++	dsb(sy);
++
++	/* ugly busy wait only option for now */
++	while (readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE)
++		cpu_relax();
++}
++EXPORT_SYMBOL_GPL(bcm_dma_wait_idle);
++
++extern bool bcm_dma_is_busy(void __iomem *dma_chan_base)
++{
++	dsb(sy);
++
++	return readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE;
++}
++EXPORT_SYMBOL_GPL(bcm_dma_is_busy);
++
++/* Complete an ongoing DMA (assuming its results are to be ignored)
++   Does nothing if there is no DMA in progress.
++   This routine waits for the current AXI transfer to complete before
++   terminating the current DMA. If the current transfer is hung on a DREQ used
++   by an uncooperative peripheral the AXI transfer may never complete.	In this
++   case the routine times out and return a non-zero error code.
++   Use of this routine doesn't guarantee that the ongoing or aborted DMA
++   does not produce an interrupt.
++*/
++extern int bcm_dma_abort(void __iomem *dma_chan_base)
++{
++	unsigned long int cs;
++	int rc = 0;
++
++	cs = readl(dma_chan_base + BCM2708_DMA_CS);
++
++	if (BCM2708_DMA_ACTIVE & cs) {
++		long int timeout = 10000;
++
++		/* write 0 to the active bit - pause the DMA */
++		writel(0, dma_chan_base + BCM2708_DMA_CS);
++
++		/* wait for any current AXI transfer to complete */
++		while (0 != (cs & BCM2708_DMA_ISPAUSED) && --timeout >= 0)
++			cs = readl(dma_chan_base + BCM2708_DMA_CS);
++
++		if (0 != (cs & BCM2708_DMA_ISPAUSED)) {
++			/* we'll un-pause when we set of our next DMA */
++			rc = -ETIMEDOUT;
++
++		} else if (BCM2708_DMA_ACTIVE & cs) {
++			/* terminate the control block chain */
++			writel(0, dma_chan_base + BCM2708_DMA_NEXTCB);
++
++			/* abort the whole DMA */
++			writel(BCM2708_DMA_ABORT | BCM2708_DMA_ACTIVE,
++			       dma_chan_base + BCM2708_DMA_CS);
++		}
++	}
++
++	return rc;
++}
++EXPORT_SYMBOL_GPL(bcm_dma_abort);
++
++ /* DMA Manager Device Methods */
++
++static void vc_dmaman_init(struct vc_dmaman *dmaman, void __iomem *dma_base,
++			   u32 chans_available)
++{
++	dmaman->dma_base = dma_base;
++	dmaman->chan_available = chans_available;
++	dmaman->has_feature[BCM_DMA_FEATURE_FAST_ORD] = 0x0c;  /* 2 & 3 */
++	dmaman->has_feature[BCM_DMA_FEATURE_BULK_ORD] = 0x01;  /* 0 */
++	dmaman->has_feature[BCM_DMA_FEATURE_NORMAL_ORD] = 0xfe;  /* 1 to 7 */
++	dmaman->has_feature[BCM_DMA_FEATURE_LITE_ORD] = 0x7f00;  /* 8 to 14 */
++}
++
++static int vc_dmaman_chan_alloc(struct vc_dmaman *dmaman,
++				unsigned required_feature_set)
++{
++	u32 chans;
++	int chan = 0;
++	int feature;
++
++	chans = dmaman->chan_available;
++	for (feature = 0; feature < BCM_DMA_FEATURE_COUNT; feature++)
++		/* select the subset of available channels with the desired
++		   features */
++		if (required_feature_set & (1 << feature))
++			chans &= dmaman->has_feature[feature];
++
++	if (!chans)
++		return -ENOENT;
++
++	/* return the ordinal of the first channel in the bitmap */
++	while (chans != 0 && (chans & 1) == 0) {
++		chans >>= 1;
++		chan++;
++	}
++	/* claim the channel */
++	dmaman->chan_available &= ~(1 << chan);
++
++	return chan;
++}
++
++static int vc_dmaman_chan_free(struct vc_dmaman *dmaman, int chan)
++{
++	if (chan < 0)
++		return -EINVAL;
++
++	if ((1 << chan) & dmaman->chan_available)
++		return -EIDRM;
++
++	dmaman->chan_available |= (1 << chan);
++
++	return 0;
++}
++
++/* DMA Manager Monitor */
++
++extern int bcm_dma_chan_alloc(unsigned required_feature_set,
++			      void __iomem **out_dma_base, int *out_dma_irq)
++{
++	struct vc_dmaman *dmaman = g_dmaman;
++	struct platform_device *pdev = to_platform_device(dmaman_dev);
++	struct resource *r;
++	int chan;
++
++	if (!dmaman_dev)
++		return -ENODEV;
++
++	mutex_lock(&dmaman->lock);
++	chan = vc_dmaman_chan_alloc(dmaman, required_feature_set);
++	if (chan < 0)
++		goto out;
++
++	r = platform_get_resource(pdev, IORESOURCE_IRQ, (unsigned int)chan);
++	if (!r) {
++		dev_err(dmaman_dev, "failed to get irq for DMA channel %d\n",
++			chan);
++		vc_dmaman_chan_free(dmaman, chan);
++		chan = -ENOENT;
++		goto out;
++	}
++
++	*out_dma_base = BCM2708_DMA_CHANIO(dmaman->dma_base, chan);
++	*out_dma_irq = r->start;
++	dev_dbg(dmaman_dev,
++		"Legacy API allocated channel=%d, base=%p, irq=%i\n",
++		chan, *out_dma_base, *out_dma_irq);
++
++out:
++	mutex_unlock(&dmaman->lock);
++
++	return chan;
++}
++EXPORT_SYMBOL_GPL(bcm_dma_chan_alloc);
++
++extern int bcm_dma_chan_free(int channel)
++{
++	struct vc_dmaman *dmaman = g_dmaman;
++	int rc;
++
++	if (!dmaman_dev)
++		return -ENODEV;
++
++	mutex_lock(&dmaman->lock);
++	rc = vc_dmaman_chan_free(dmaman, channel);
++	mutex_unlock(&dmaman->lock);
++
++	return rc;
++}
++EXPORT_SYMBOL_GPL(bcm_dma_chan_free);
++
++int bcm_dmaman_probe(struct platform_device *pdev, void __iomem *base,
++		     u32 chans_available)
++{
++	struct device *dev = &pdev->dev;
++	struct vc_dmaman *dmaman;
++
++	dmaman = devm_kzalloc(dev, sizeof(*dmaman), GFP_KERNEL);
++	if (!dmaman)
++		return -ENOMEM;
++
++	mutex_init(&dmaman->lock);
++	vc_dmaman_init(dmaman, base, chans_available);
++	g_dmaman = dmaman;
++	dmaman_dev = dev;
++
++	dev_info(dev, "DMA legacy API manager, dmachans=0x%x\n",
++		 chans_available);
++
++	return 0;
++}
++EXPORT_SYMBOL(bcm_dmaman_probe);
++
++int bcm_dmaman_remove(struct platform_device *pdev)
++{
++	dmaman_dev = NULL;
++
++	return 0;
++}
++EXPORT_SYMBOL(bcm_dmaman_remove);
++
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/include/linux/platform_data/dma-bcm2708.h
+@@ -0,0 +1,143 @@
++/*
++ *  Copyright (C) 2010 Broadcom
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#ifndef _PLAT_BCM2708_DMA_H
++#define _PLAT_BCM2708_DMA_H
++
++/* DMA CS Control and Status bits */
++#define BCM2708_DMA_ACTIVE	BIT(0)
++#define BCM2708_DMA_INT		BIT(2)
++#define BCM2708_DMA_ISPAUSED	BIT(4)  /* Pause requested or not active */
++#define BCM2708_DMA_ISHELD	BIT(5)  /* Is held by DREQ flow control */
++#define BCM2708_DMA_ERR		BIT(8)
++#define BCM2708_DMA_ABORT	BIT(30) /* stop current CB, go to next, WO */
++#define BCM2708_DMA_RESET	BIT(31) /* WO, self clearing */
++
++/* DMA control block "info" field bits */
++#define BCM2708_DMA_INT_EN	BIT(0)
++#define BCM2708_DMA_TDMODE	BIT(1)
++#define BCM2708_DMA_WAIT_RESP	BIT(3)
++#define BCM2708_DMA_D_INC	BIT(4)
++#define BCM2708_DMA_D_WIDTH	BIT(5)
++#define BCM2708_DMA_D_DREQ	BIT(6)
++#define BCM2708_DMA_S_INC	BIT(8)
++#define BCM2708_DMA_S_WIDTH	BIT(9)
++#define BCM2708_DMA_S_DREQ	BIT(10)
++
++#define	BCM2708_DMA_BURST(x)	(((x) & 0xf) << 12)
++#define	BCM2708_DMA_PER_MAP(x)	((x) << 16)
++#define	BCM2708_DMA_WAITS(x)	(((x) & 0x1f) << 21)
++
++#define BCM2708_DMA_DREQ_EMMC	11
++#define BCM2708_DMA_DREQ_SDHOST	13
++
++#define BCM2708_DMA_CS		0x00 /* Control and Status */
++#define BCM2708_DMA_ADDR	0x04
++/* the current control block appears in the following registers - read only */
++#define BCM2708_DMA_INFO	0x08
++#define BCM2708_DMA_SOURCE_AD	0x0c
++#define BCM2708_DMA_DEST_AD	0x10
++#define BCM2708_DMA_NEXTCB	0x1C
++#define BCM2708_DMA_DEBUG	0x20
++
++#define BCM2708_DMA4_CS		(BCM2708_DMA_CHAN(4) + BCM2708_DMA_CS)
++#define BCM2708_DMA4_ADDR	(BCM2708_DMA_CHAN(4) + BCM2708_DMA_ADDR)
++
++#define BCM2708_DMA_TDMODE_LEN(w, h) ((h) << 16 | (w))
++
++/* When listing features we can ask for when allocating DMA channels give
++   those with higher priority smaller ordinal numbers */
++#define BCM_DMA_FEATURE_FAST_ORD	0
++#define BCM_DMA_FEATURE_BULK_ORD	1
++#define BCM_DMA_FEATURE_NORMAL_ORD	2
++#define BCM_DMA_FEATURE_LITE_ORD	3
++#define BCM_DMA_FEATURE_FAST		BIT(BCM_DMA_FEATURE_FAST_ORD)
++#define BCM_DMA_FEATURE_BULK		BIT(BCM_DMA_FEATURE_BULK_ORD)
++#define BCM_DMA_FEATURE_NORMAL		BIT(BCM_DMA_FEATURE_NORMAL_ORD)
++#define BCM_DMA_FEATURE_LITE		BIT(BCM_DMA_FEATURE_LITE_ORD)
++#define BCM_DMA_FEATURE_COUNT		4
++
++struct bcm2708_dma_cb {
++	u32 info;
++	u32 src;
++	u32 dst;
++	u32 length;
++	u32 stride;
++	u32 next;
++	u32 pad[2];
++};
++
++struct scatterlist;
++struct platform_device;
++
++#if defined(CONFIG_DMA_BCM2708) || defined(CONFIG_DMA_BCM2708_MODULE)
++
++int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len);
++void bcm_dma_start(void __iomem *dma_chan_base, dma_addr_t control_block);
++void bcm_dma_wait_idle(void __iomem *dma_chan_base);
++bool bcm_dma_is_busy(void __iomem *dma_chan_base);
++int bcm_dma_abort(void __iomem *dma_chan_base);
++
++/* return channel no or -ve error */
++int bcm_dma_chan_alloc(unsigned preferred_feature_set,
++		       void __iomem **out_dma_base, int *out_dma_irq);
++int bcm_dma_chan_free(int channel);
++
++int bcm_dmaman_probe(struct platform_device *pdev, void __iomem *base,
++		     u32 chans_available);
++int bcm_dmaman_remove(struct platform_device *pdev);
++
++#else /* CONFIG_DMA_BCM2708 */
++
++static inline int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr,
++					  int sg_len)
++{
++	return 0;
++}
++
++static inline void bcm_dma_start(void __iomem *dma_chan_base,
++				 dma_addr_t control_block) { }
++
++static inline void bcm_dma_wait_idle(void __iomem *dma_chan_base) { }
++
++static inline bool bcm_dma_is_busy(void __iomem *dma_chan_base)
++{
++	return false;
++}
++
++static inline int bcm_dma_abort(void __iomem *dma_chan_base)
++{
++	return -EINVAL;
++}
++
++static inline int bcm_dma_chan_alloc(unsigned preferred_feature_set,
++				     void __iomem **out_dma_base,
++				     int *out_dma_irq)
++{
++	return -EINVAL;
++}
++
++static inline int bcm_dma_chan_free(int channel)
++{
++	return -EINVAL;
++}
++
++static inline int bcm_dmaman_probe(struct platform_device *pdev,
++				   void __iomem *base, u32 chans_available)
++{
++	return 0;
++}
++
++static inline int bcm_dmaman_remove(struct platform_device *pdev)
++{
++	return 0;
++}
++
++#endif /* CONFIG_DMA_BCM2708 || CONFIG_DMA_BCM2708_MODULE */
++
++#endif /* _PLAT_BCM2708_DMA_H */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0070-MMC-added-alternative-MMC-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0070-MMC-added-alternative-MMC-driver.patch
new file mode 100644
index 0000000000..55459a5804
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0070-MMC-added-alternative-MMC-driver.patch
@@ -0,0 +1,2015 @@
+From 8cf89fd573e0ddea9505be66bb2de845ddc22eff Mon Sep 17 00:00:00 2001
+From: gellert <gellert@raspberrypi.org>
+Date: Fri, 15 Aug 2014 16:35:06 +0100
+Subject: [PATCH] MMC: added alternative MMC driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+mmc: Disable CMD23 transfers on all cards
+
+Pending wire-level investigation of these types of transfers
+and associated errors on bcm2835-mmc, disable for now. Fallback of
+CMD18/CMD25 transfers will be used automatically by the MMC layer.
+
+Reported/Tested-by: Gellert Weisz <gellert@raspberrypi.org>
+
+mmc: bcm2835-mmc: enable DT support for all architectures
+
+Both ARCH_BCM2835 and ARCH_BCM270x are built with OF now.
+Enable Device Tree support for all architectures.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+mmc: bcm2835-mmc: fix probe error handling
+
+Probe error handling is broken in several places.
+Simplify error handling by using device managed functions.
+Replace pr_{err,info} with dev_{err,info}.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+bcm2835-mmc: Add locks when accessing sdhost registers
+
+bcm2835-mmc: Add range of debug options for slowing things down
+
+bcm2835-mmc: Add option to disable some delays
+
+bcm2835-mmc: Add option to disable MMC_QUIRK_BLK_NO_CMD23
+
+bcm2835-mmc: Default to disabling MMC_QUIRK_BLK_NO_CMD23
+
+bcm2835-mmc: Adding overclocking option
+
+Allow a different clock speed to be substitued for a requested 50MHz.
+This option is exposed using the "overclock_50" DT parameter.
+Note that the mmc interface is restricted to EVEN integer divisions of
+250MHz, and the highest sensible option is 63 (250/4 = 62.5), the
+next being 125 (250/2) which is much too high.
+
+Use at your own risk.
+
+bcm2835-mmc: Round up the overclock, so 62 works for 62.5Mhz
+
+Also only warn once for each overclock setting.
+
+mmc: bcm2835-mmc: Make available on ARCH_BCM2835
+
+Make the bcm2835-mmc driver available for use on ARCH_BCM2835.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+BCM270x_DT: add bcm2835-mmc entry
+
+Add Device Tree entry for bcm2835-mmc.
+In non-DT mode, don't add the device in the board file.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+bcm2835-mmc: Don't overwrite MMC capabilities from DT
+
+bcm2835-mmc: Don't override bus width capabilities from devicetree
+
+Take out the force setting of the MMC_CAP_4_BIT_DATA host capability
+so that the result read from devicetree via mmc_of_parse() is
+preserved.
+
+bcm2835-mmc: Only claim one DMA channel
+
+With both MMC controllers enabled there are few DMA channels left. The
+bcm2835-mmc driver only uses DMA in one direction at a time, so it
+doesn't need to claim two channels.
+
+See: https://github.com/raspberrypi/linux/issues/1327
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-mmc: New timer API
+
+mmc: bcm2835-mmc: Support underclocking
+
+Support underclocking of the SD bus using the max-frequency DT property
+(which currently has no DT parameter). The sd_overclock parameter
+already provides another way to achieve the same thing which should be
+equivalent in end result, but it is a bug not to support max-frequency
+as well.
+
+See: https://github.com/raspberrypi/linux/issues/2350
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+mmc/bcm2835: Recover from MMC_SEND_EXT_CSD
+
+If the user issues an "mmc extcsd read", the SD controller receives
+what it thinks is a SEND_IF_COND command with an unexpected data block.
+The resulting operations leave the FSM stuck in READWAIT, a state which
+persists until the MMC framework resets the controller, by which point
+the root filesystem is likely to have been unmounted.
+
+A less heavyweight solution is to detect the condition and nudge the
+FSM by asserting the (self-clearing) FORCE_DATA_MODE bit.
+
+N.B. This workaround was essentially discovered by accident and without
+a full understanding the inner workings of the controller, so it is
+fortunate that the "fix" only modifies error paths.
+
+See: https://github.com/raspberrypi/linux/issues/2728
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-mmc: Fix DMA channel leak
+
+The BCM2835 MMC host driver requests a DMA channel on probe but neglects
+to release the channel in the probe error path and on driver unbind.
+
+I'm seeing this happen on every boot of the Compute Module 3: On first
+driver probe, DMA channel 2 is allocated and then leaked with a "could
+not get clk, deferring probe" message. On second driver probe, channel 4
+is allocated.
+
+Fix it.
+
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+Cc: Frank Pavlic <f.pavlic@kunbus.de>
+
+bcm2835-mmc: Fix struct mmc_host leak on probe
+
+The BCM2835 MMC host driver requests the bus address of the host's
+register map on probe.  If that fails, the driver leaks the struct
+mmc_host allocated earlier.
+
+Fix it.
+
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+Cc: Frank Pavlic <f.pavlic@kunbus.de>
+
+bcm2835-mmc: Fix duplicate free_irq() on remove
+
+The BCM2835 MMC host driver requests its interrupt as a device-managed
+resource, so the interrupt is automatically freed after the driver is
+unbound.
+
+However on driver unbind, bcm2835_mmc_remove() frees the interrupt
+explicitly to avoid invocation of the interrupt handler after driver
+structures have been torn down.
+
+The interrupt is thus freed twice, leading to a WARN splat in
+__free_irq().  Fix by not requesting the interrupt as a device-managed
+resource.
+
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+Cc: Frank Pavlic <f.pavlic@kunbus.de>
+
+bcm2835-mmc: Handle mmc_add_host() errors
+
+The BCM2835 MMC host driver calls mmc_add_host() but doesn't check its
+return value.  Errors occurring in that function are therefore not
+handled.  Fix it.
+
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+Cc: Frank Pavlic <f.pavlic@kunbus.de>
+
+bcm2835-mmc: Deduplicate reset of driver data on remove
+
+The BCM2835 MMC host driver sets the device's driver data pointer to
+NULL on ->remove() even though the driver core subsequently does the
+same in __device_release_driver().  Drop the duplicate assignment.
+
+Signed-off-by: Lukas Wunner <lukas@wunner.de>
+Cc: Frank Pavlic <f.pavlic@kunbus.de>
+
+bcm2835_mmc: Remove vestigial threaded IRQ
+
+With SDIO processing now managed by the MMC framework with a
+workqueue, the bcm2835_mmc driver no longer needs a threaded
+IRQ.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+Add missing dma_unmap_sg calls to free relevant swiotlb bounce buffers.
+This prevents DMA leaks.
+
+Signed-off-by: Yaroslav Rosomakho <yaroslavros@gmail.com>
+
+Limit max_req_size under arm64 (or any other platform that uses swiotlb) to prevent potential buffer overflow due to bouncing.
+
+Signed-off-by: Yaroslav Rosomakho <yaroslavros@gmail.com>
+
+mmc: sdhci: Silence MMC warnings
+
+When the MMC isn't plugged in, the driver will spam the console which is
+pretty annoying when using NFS.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+
+mmc: sdhci-iproc: Fix vmmc regulators on iProc
+
+The Linux support for controlling card power via regulators appears to
+be contentious. I would argue that the default behaviour is contrary to
+the SDHCI spec - turning off the power writes a reserved value to the
+SD Bus Voltage Select field of the Power Control Register, which
+seems to kill the Arasan/iProc controller - but fortunately there is a
+hook in sdhci_ops to override the behaviour. Borrow the implementation
+from sdhci_arasan_set_power.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-mmc: uninitialized_var is no more
+---
+ drivers/mmc/core/block.c       |   31 +-
+ drivers/mmc/core/core.c        |    3 +-
+ drivers/mmc/core/quirks.h      |    8 +
+ drivers/mmc/host/Kconfig       |   29 +
+ drivers/mmc/host/Makefile      |    1 +
+ drivers/mmc/host/bcm2835-mmc.c | 1576 ++++++++++++++++++++++++++++++++
+ drivers/mmc/host/sdhci-iproc.c |   12 +
+ drivers/mmc/host/sdhci.c       |    6 +-
+ include/linux/mmc/card.h       |    2 +
+ 9 files changed, 1663 insertions(+), 5 deletions(-)
+ create mode 100644 drivers/mmc/host/bcm2835-mmc.c
+
+--- a/drivers/mmc/core/block.c
++++ b/drivers/mmc/core/block.c
+@@ -171,6 +171,13 @@ static DEFINE_MUTEX(open_lock);
+ module_param(perdev_minors, int, 0444);
+ MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device");
+ 
++/*
++ * Allow quirks to be overridden for the current card
++ */
++static char *card_quirks;
++module_param(card_quirks, charp, 0644);
++MODULE_PARM_DESC(card_quirks, "Force the use of the indicated quirks (a bitfield)");
++
+ static inline int mmc_blk_part_switch(struct mmc_card *card,
+ 				      unsigned int part_type);
+ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
+@@ -2924,6 +2931,8 @@ static int mmc_blk_probe(struct mmc_card
+ {
+ 	struct mmc_blk_data *md;
+ 	int ret = 0;
++	char quirk_str[24];
++	char cap_str[10];
+ 
+ 	/*
+ 	 * Check that the card supports the command class(es) we need.
+@@ -2931,7 +2940,16 @@ static int mmc_blk_probe(struct mmc_card
+ 	if (!(card->csd.cmdclass & CCC_BLOCK_READ))
+ 		return -ENODEV;
+ 
+-	mmc_fixup_device(card, mmc_blk_fixups);
++	if (card_quirks) {
++		unsigned long quirks;
++		if (kstrtoul(card_quirks, 0, &quirks) == 0)
++			card->quirks = (unsigned int)quirks;
++		else
++			pr_err("mmc_block: Invalid card_quirks parameter '%s'\n",
++			       card_quirks);
++	}
++	else
++		mmc_fixup_device(card, mmc_blk_fixups);
+ 
+ 	card->complete_wq = alloc_workqueue("mmc_complete",
+ 					WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
+@@ -2946,6 +2964,17 @@ static int mmc_blk_probe(struct mmc_card
+ 		goto out_free;
+ 	}
+ 
++	string_get_size((u64)get_capacity(md->disk), 512, STRING_UNITS_2,
++			cap_str, sizeof(cap_str));
++	if (card->quirks)
++		snprintf(quirk_str, sizeof(quirk_str),
++			 " (quirks 0x%08x)", card->quirks);
++	else
++		quirk_str[0] = '\0';
++	pr_info("%s: %s %s %s%s%s\n",
++		md->disk->disk_name, mmc_card_id(card), mmc_card_name(card),
++		cap_str, md->read_only ? " (ro)" : "", quirk_str);
++
+ 	ret = mmc_blk_alloc_parts(card, md);
+ 	if (ret)
+ 		goto out;
+--- a/drivers/mmc/core/core.c
++++ b/drivers/mmc/core/core.c
+@@ -1801,7 +1801,8 @@ EXPORT_SYMBOL(mmc_erase);
+ 
+ int mmc_can_erase(struct mmc_card *card)
+ {
+-	if (card->csd.cmdclass & CCC_ERASE && card->erase_size)
++	if (card->csd.cmdclass & CCC_ERASE && card->erase_size &&
++	    !(card->quirks & MMC_QUIRK_ERASE_BROKEN))
+ 		return 1;
+ 	return 0;
+ }
+--- a/drivers/mmc/core/quirks.h
++++ b/drivers/mmc/core/quirks.h
+@@ -99,6 +99,14 @@ static const struct mmc_fixup __maybe_un
+ 	MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
+ 		  MMC_QUIRK_TRIM_BROKEN),
+ 
++	/*
++	 *  On some Kingston SD cards, multiple erases of less than 64
++	 *  sectors can cause corruption.
++	 */
++	MMC_FIXUP("SD16G", 0x41, 0x3432, add_quirk, MMC_QUIRK_ERASE_BROKEN),
++	MMC_FIXUP("SD32G", 0x41, 0x3432, add_quirk, MMC_QUIRK_ERASE_BROKEN),
++	MMC_FIXUP("SD64G", 0x41, 0x3432, add_quirk, MMC_QUIRK_ERASE_BROKEN),
++
+ 	END_FIXUP
+ };
+ 
+--- a/drivers/mmc/host/Kconfig
++++ b/drivers/mmc/host/Kconfig
+@@ -5,6 +5,35 @@
+ 
+ comment "MMC/SD/SDIO Host Controller Drivers"
+ 
++config MMC_BCM2835_MMC
++	tristate "MMC support on BCM2835"
++	depends on MACH_BCM2708 || MACH_BCM2709 || ARCH_BCM2835
++	help
++	  This selects the MMC Interface on BCM2835.
++
++	  If you have a controller with this interface, say Y or M here.
++
++	  If unsure, say N.
++
++config MMC_BCM2835_DMA
++	bool "DMA support on BCM2835 Arasan controller"
++	depends on MMC_BCM2835_MMC
++	help
++	  Enable DMA support on the Arasan SDHCI controller in Broadcom 2708
++	  based chips.
++
++	  If unsure, say N.
++
++config MMC_BCM2835_PIO_DMA_BARRIER
++	int "Block count limit for PIO transfers"
++	depends on MMC_BCM2835_MMC && MMC_BCM2835_DMA
++	range 0 256
++	default 2
++	help
++	  The inclusive limit in bytes under which PIO will be used instead of DMA
++
++	  If unsure, say 2 here.
++
+ config MMC_DEBUG
+ 	bool "MMC host drivers debugging"
+ 	depends on MMC != n
+--- a/drivers/mmc/host/Makefile
++++ b/drivers/mmc/host/Makefile
+@@ -23,6 +23,7 @@ obj-$(CONFIG_MMC_SDHCI_F_SDH30)	+= sdhci
+ obj-$(CONFIG_MMC_SDHCI_MILBEAUT)	+= sdhci-milbeaut.o
+ obj-$(CONFIG_MMC_SDHCI_SPEAR)	+= sdhci-spear.o
+ obj-$(CONFIG_MMC_SDHCI_AM654)	+= sdhci_am654.o
++obj-$(CONFIG_MMC_BCM2835_MMC)	+= bcm2835-mmc.o
+ obj-$(CONFIG_MMC_WBSD)		+= wbsd.o
+ obj-$(CONFIG_MMC_AU1X)		+= au1xmmc.o
+ obj-$(CONFIG_MMC_ALCOR)	+= alcor.o
+--- /dev/null
++++ b/drivers/mmc/host/bcm2835-mmc.c
+@@ -0,0 +1,1576 @@
++/*
++ * BCM2835 MMC host driver.
++ *
++ * Author:      Gellert Weisz <gellert@raspberrypi.org>
++ *              Copyright 2014
++ *
++ * Based on
++ *  sdhci-bcm2708.c by Broadcom
++ *  sdhci-bcm2835.c by Stephen Warren and Oleksandr Tymoshenko
++ *  sdhci.c and sdhci-pci.c by Pierre Ossman
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms and conditions of the GNU General Public License,
++ * version 2, as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
++ */
++
++#include <linux/delay.h>
++#include <linux/module.h>
++#include <linux/io.h>
++#include <linux/mmc/mmc.h>
++#include <linux/mmc/host.h>
++#include <linux/mmc/sd.h>
++#include <linux/scatterlist.h>
++#include <linux/of_address.h>
++#include <linux/of_irq.h>
++#include <linux/clk.h>
++#include <linux/platform_device.h>
++#include <linux/err.h>
++#include <linux/blkdev.h>
++#include <linux/dmaengine.h>
++#include <linux/dma-mapping.h>
++#include <linux/of_dma.h>
++#include <linux/swiotlb.h>
++
++#include "sdhci.h"
++
++
++#define DRIVER_NAME "mmc-bcm2835"
++
++#define DBG(f, x...) \
++pr_debug(DRIVER_NAME " [%s()]: " f, __func__, ## x)
++
++#ifndef CONFIG_MMC_BCM2835_DMA
++ #define FORCE_PIO
++#endif
++
++
++/* the inclusive limit in bytes under which PIO will be used instead of DMA */
++#ifdef CONFIG_MMC_BCM2835_PIO_DMA_BARRIER
++#define PIO_DMA_BARRIER CONFIG_MMC_BCM2835_PIO_DMA_BARRIER
++#else
++#define PIO_DMA_BARRIER 00
++#endif
++
++#define MIN_FREQ 400000
++#define TIMEOUT_VAL 0xE
++#define BCM2835_SDHCI_WRITE_DELAY(f)	(((2 * 1000000) / f) + 1)
++
++
++unsigned mmc_debug;
++unsigned mmc_debug2;
++
++struct bcm2835_host {
++	spinlock_t				lock;
++
++	void __iomem			*ioaddr;
++	u32						bus_addr;
++
++	struct mmc_host			*mmc;
++
++	u32						timeout;
++
++	int						clock;	/* Current clock speed */
++	u8						pwr;	/* Current voltage */
++
++	unsigned int			max_clk;		/* Max possible freq */
++	unsigned int			timeout_clk;	/* Timeout freq (KHz) */
++	unsigned int			clk_mul;		/* Clock Muliplier value */
++
++	struct tasklet_struct	finish_tasklet;		/* Tasklet structures */
++
++	struct timer_list		timer;			/* Timer for timeouts */
++
++	struct sg_mapping_iter	sg_miter;		/* SG state for PIO */
++	unsigned int			blocks;			/* remaining PIO blocks */
++
++	int						irq;			/* Device IRQ */
++
++
++	u32						ier;			/* cached registers */
++
++	struct mmc_request		*mrq;			/* Current request */
++	struct mmc_command		*cmd;			/* Current command */
++	struct mmc_data			*data;			/* Current data request */
++	unsigned int			data_early:1;		/* Data finished before cmd */
++
++	wait_queue_head_t		buf_ready_int;		/* Waitqueue for Buffer Read Ready interrupt */
++
++	u32						shadow;
++
++	/*DMA part*/
++	struct dma_chan			*dma_chan_rxtx;		/* DMA channel for reads and writes */
++	struct dma_slave_config		dma_cfg_rx;
++	struct dma_slave_config		dma_cfg_tx;
++	struct dma_async_tx_descriptor	*tx_desc;	/* descriptor */
++
++	bool					have_dma;
++	bool					use_dma;
++	bool					wait_for_dma;
++	/*end of DMA part*/
++
++	int						max_delay;	/* maximum length of time spent waiting */
++
++	int						flags;				/* Host attributes */
++#define SDHCI_REQ_USE_DMA	(1<<2)	/* Use DMA for this req. */
++#define SDHCI_DEVICE_DEAD	(1<<3)	/* Device unresponsive */
++#define SDHCI_AUTO_CMD12	(1<<6)	/* Auto CMD12 support */
++#define SDHCI_AUTO_CMD23	(1<<7)	/* Auto CMD23 support */
++#define SDHCI_SDIO_IRQ_ENABLED	(1<<9)	/* SDIO irq enabled */
++
++	u32				overclock_50;	/* frequency to use when 50MHz is requested (in MHz) */
++	u32				max_overclock;	/* Highest reported */
++};
++
++
++static inline void bcm2835_mmc_writel(struct bcm2835_host *host, u32 val, int reg, int from)
++{
++	unsigned delay;
++	lockdep_assert_held_once(&host->lock);
++	writel(val, host->ioaddr + reg);
++	udelay(BCM2835_SDHCI_WRITE_DELAY(max(host->clock, MIN_FREQ)));
++
++	delay = ((mmc_debug >> 16) & 0xf) << ((mmc_debug >> 20) & 0xf);
++	if (delay && !((1<<from) & mmc_debug2))
++		udelay(delay);
++}
++
++static inline void mmc_raw_writel(struct bcm2835_host *host, u32 val, int reg)
++{
++	unsigned delay;
++	lockdep_assert_held_once(&host->lock);
++	writel(val, host->ioaddr + reg);
++
++	delay = ((mmc_debug >> 24) & 0xf) << ((mmc_debug >> 28) & 0xf);
++	if (delay)
++		udelay(delay);
++}
++
++static inline u32 bcm2835_mmc_readl(struct bcm2835_host *host, int reg)
++{
++	lockdep_assert_held_once(&host->lock);
++	return readl(host->ioaddr + reg);
++}
++
++static inline void bcm2835_mmc_writew(struct bcm2835_host *host, u16 val, int reg)
++{
++	u32 oldval = (reg == SDHCI_COMMAND) ? host->shadow :
++		bcm2835_mmc_readl(host, reg & ~3);
++	u32 word_num = (reg >> 1) & 1;
++	u32 word_shift = word_num * 16;
++	u32 mask = 0xffff << word_shift;
++	u32 newval = (oldval & ~mask) | (val << word_shift);
++
++	if (reg == SDHCI_TRANSFER_MODE)
++		host->shadow = newval;
++	else
++		bcm2835_mmc_writel(host, newval, reg & ~3, 0);
++
++}
++
++static inline void bcm2835_mmc_writeb(struct bcm2835_host *host, u8 val, int reg)
++{
++	u32 oldval = bcm2835_mmc_readl(host, reg & ~3);
++	u32 byte_num = reg & 3;
++	u32 byte_shift = byte_num * 8;
++	u32 mask = 0xff << byte_shift;
++	u32 newval = (oldval & ~mask) | (val << byte_shift);
++
++	bcm2835_mmc_writel(host, newval, reg & ~3, 1);
++}
++
++
++static inline u16 bcm2835_mmc_readw(struct bcm2835_host *host, int reg)
++{
++	u32 val = bcm2835_mmc_readl(host, (reg & ~3));
++	u32 word_num = (reg >> 1) & 1;
++	u32 word_shift = word_num * 16;
++	u32 word = (val >> word_shift) & 0xffff;
++
++	return word;
++}
++
++static inline u8 bcm2835_mmc_readb(struct bcm2835_host *host, int reg)
++{
++	u32 val = bcm2835_mmc_readl(host, (reg & ~3));
++	u32 byte_num = reg & 3;
++	u32 byte_shift = byte_num * 8;
++	u32 byte = (val >> byte_shift) & 0xff;
++
++	return byte;
++}
++
++static void bcm2835_mmc_unsignal_irqs(struct bcm2835_host *host, u32 clear)
++{
++	u32 ier;
++
++	ier = bcm2835_mmc_readl(host, SDHCI_SIGNAL_ENABLE);
++	ier &= ~clear;
++	/* change which requests generate IRQs - makes no difference to
++	   the content of SDHCI_INT_STATUS, or the need to acknowledge IRQs */
++	bcm2835_mmc_writel(host, ier, SDHCI_SIGNAL_ENABLE, 2);
++}
++
++
++static void bcm2835_mmc_dumpregs(struct bcm2835_host *host)
++{
++	pr_debug(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n",
++		mmc_hostname(host->mmc));
++
++	pr_debug(DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
++		bcm2835_mmc_readl(host, SDHCI_DMA_ADDRESS),
++		bcm2835_mmc_readw(host, SDHCI_HOST_VERSION));
++	pr_debug(DRIVER_NAME ": Blk size: 0x%08x | Blk cnt:  0x%08x\n",
++		bcm2835_mmc_readw(host, SDHCI_BLOCK_SIZE),
++		bcm2835_mmc_readw(host, SDHCI_BLOCK_COUNT));
++	pr_debug(DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
++		bcm2835_mmc_readl(host, SDHCI_ARGUMENT),
++		bcm2835_mmc_readw(host, SDHCI_TRANSFER_MODE));
++	pr_debug(DRIVER_NAME ": Present:  0x%08x | Host ctl: 0x%08x\n",
++		bcm2835_mmc_readl(host, SDHCI_PRESENT_STATE),
++		bcm2835_mmc_readb(host, SDHCI_HOST_CONTROL));
++	pr_debug(DRIVER_NAME ": Power:    0x%08x | Blk gap:  0x%08x\n",
++		bcm2835_mmc_readb(host, SDHCI_POWER_CONTROL),
++		bcm2835_mmc_readb(host, SDHCI_BLOCK_GAP_CONTROL));
++	pr_debug(DRIVER_NAME ": Wake-up:  0x%08x | Clock:    0x%08x\n",
++		bcm2835_mmc_readb(host, SDHCI_WAKE_UP_CONTROL),
++		bcm2835_mmc_readw(host, SDHCI_CLOCK_CONTROL));
++	pr_debug(DRIVER_NAME ": Timeout:  0x%08x | Int stat: 0x%08x\n",
++		bcm2835_mmc_readb(host, SDHCI_TIMEOUT_CONTROL),
++		bcm2835_mmc_readl(host, SDHCI_INT_STATUS));
++	pr_debug(DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
++		bcm2835_mmc_readl(host, SDHCI_INT_ENABLE),
++		bcm2835_mmc_readl(host, SDHCI_SIGNAL_ENABLE));
++	pr_debug(DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
++		bcm2835_mmc_readw(host, SDHCI_AUTO_CMD_STATUS),
++		bcm2835_mmc_readw(host, SDHCI_SLOT_INT_STATUS));
++	pr_debug(DRIVER_NAME ": Caps:     0x%08x | Caps_1:   0x%08x\n",
++		bcm2835_mmc_readl(host, SDHCI_CAPABILITIES),
++		bcm2835_mmc_readl(host, SDHCI_CAPABILITIES_1));
++	pr_debug(DRIVER_NAME ": Cmd:      0x%08x | Max curr: 0x%08x\n",
++		bcm2835_mmc_readw(host, SDHCI_COMMAND),
++		bcm2835_mmc_readl(host, SDHCI_MAX_CURRENT));
++	pr_debug(DRIVER_NAME ": Host ctl2: 0x%08x\n",
++		bcm2835_mmc_readw(host, SDHCI_HOST_CONTROL2));
++
++	pr_debug(DRIVER_NAME ": ===========================================\n");
++}
++
++
++static void bcm2835_mmc_reset(struct bcm2835_host *host, u8 mask)
++{
++	unsigned long timeout;
++	unsigned long flags;
++
++	spin_lock_irqsave(&host->lock, flags);
++	bcm2835_mmc_writeb(host, mask, SDHCI_SOFTWARE_RESET);
++
++	if (mask & SDHCI_RESET_ALL)
++		host->clock = 0;
++
++	/* Wait max 100 ms */
++	timeout = 100;
++
++	/* hw clears the bit when it's done */
++	while (bcm2835_mmc_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
++		if (timeout == 0) {
++			pr_err("%s: Reset 0x%x never completed.\n",
++				mmc_hostname(host->mmc), (int)mask);
++			bcm2835_mmc_dumpregs(host);
++			return;
++		}
++		timeout--;
++		spin_unlock_irqrestore(&host->lock, flags);
++		mdelay(1);
++		spin_lock_irqsave(&host->lock, flags);
++	}
++
++	if (100-timeout > 10 && 100-timeout > host->max_delay) {
++		host->max_delay = 100-timeout;
++		pr_warn("Warning: MMC controller hung for %d ms\n", host->max_delay);
++	}
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
++
++static void bcm2835_mmc_init(struct bcm2835_host *host, int soft)
++{
++	unsigned long flags;
++	if (soft)
++		bcm2835_mmc_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA);
++	else
++		bcm2835_mmc_reset(host, SDHCI_RESET_ALL);
++
++	host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
++		    SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT |
++		    SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC |
++		    SDHCI_INT_TIMEOUT | SDHCI_INT_DATA_END |
++		    SDHCI_INT_RESPONSE;
++
++	spin_lock_irqsave(&host->lock, flags);
++	bcm2835_mmc_writel(host, host->ier, SDHCI_INT_ENABLE, 3);
++	bcm2835_mmc_writel(host, host->ier, SDHCI_SIGNAL_ENABLE, 3);
++	spin_unlock_irqrestore(&host->lock, flags);
++
++	if (soft) {
++		/* force clock reconfiguration */
++		host->clock = 0;
++		bcm2835_mmc_set_ios(host->mmc, &host->mmc->ios);
++	}
++}
++
++
++
++static void bcm2835_mmc_finish_data(struct bcm2835_host *host);
++
++static void bcm2835_mmc_dma_complete(void *param)
++{
++	struct bcm2835_host *host = param;
++	struct dma_chan *dma_chan;
++	unsigned long flags;
++	u32 dir_data;
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	host->use_dma = false;
++
++	if (host->data) {
++		dma_chan = host->dma_chan_rxtx;
++		if (host->data->flags & MMC_DATA_WRITE)
++			dir_data = DMA_TO_DEVICE;
++		else
++			dir_data = DMA_FROM_DEVICE;
++		dma_unmap_sg(dma_chan->device->dev,
++		     host->data->sg, host->data->sg_len,
++		     dir_data);
++		if (! (host->data->flags & MMC_DATA_WRITE))
++			bcm2835_mmc_finish_data(host);
++	} else if (host->wait_for_dma) {
++		host->wait_for_dma = false;
++		tasklet_schedule(&host->finish_tasklet);
++	}
++
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_bcm2835_mmc_read_block_pio(struct bcm2835_host *host)
++{
++	unsigned long flags;
++	size_t blksize, len, chunk;
++
++	u32 scratch = 0;
++	u8 *buf;
++
++	blksize = host->data->blksz;
++	chunk = 0;
++
++	local_irq_save(flags);
++
++	while (blksize) {
++		if (!sg_miter_next(&host->sg_miter))
++			BUG();
++
++		len = min(host->sg_miter.length, blksize);
++
++		blksize -= len;
++		host->sg_miter.consumed = len;
++
++		buf = host->sg_miter.addr;
++
++		while (len) {
++			if (chunk == 0) {
++				scratch = bcm2835_mmc_readl(host, SDHCI_BUFFER);
++				chunk = 4;
++			}
++
++			*buf = scratch & 0xFF;
++
++			buf++;
++			scratch >>= 8;
++			chunk--;
++			len--;
++		}
++	}
++
++	sg_miter_stop(&host->sg_miter);
++
++	local_irq_restore(flags);
++}
++
++static void bcm2835_bcm2835_mmc_write_block_pio(struct bcm2835_host *host)
++{
++	unsigned long flags;
++	size_t blksize, len, chunk;
++	u32 scratch;
++	u8 *buf;
++
++	blksize = host->data->blksz;
++	chunk = 0;
++	chunk = 0;
++	scratch = 0;
++
++	local_irq_save(flags);
++
++	while (blksize) {
++		if (!sg_miter_next(&host->sg_miter))
++			BUG();
++
++		len = min(host->sg_miter.length, blksize);
++
++		blksize -= len;
++		host->sg_miter.consumed = len;
++
++		buf = host->sg_miter.addr;
++
++		while (len) {
++			scratch |= (u32)*buf << (chunk * 8);
++
++			buf++;
++			chunk++;
++			len--;
++
++			if ((chunk == 4) || ((len == 0) && (blksize == 0))) {
++				mmc_raw_writel(host, scratch, SDHCI_BUFFER);
++				chunk = 0;
++				scratch = 0;
++			}
++		}
++	}
++
++	sg_miter_stop(&host->sg_miter);
++
++	local_irq_restore(flags);
++}
++
++
++static void bcm2835_mmc_transfer_pio(struct bcm2835_host *host)
++{
++	u32 mask;
++
++	BUG_ON(!host->data);
++
++	if (host->blocks == 0)
++		return;
++
++	if (host->data->flags & MMC_DATA_READ)
++		mask = SDHCI_DATA_AVAILABLE;
++	else
++		mask = SDHCI_SPACE_AVAILABLE;
++
++	while (bcm2835_mmc_readl(host, SDHCI_PRESENT_STATE) & mask) {
++
++		if (host->data->flags & MMC_DATA_READ)
++			bcm2835_bcm2835_mmc_read_block_pio(host);
++		else
++			bcm2835_bcm2835_mmc_write_block_pio(host);
++
++		host->blocks--;
++
++		/* QUIRK used in sdhci.c removes the 'if' */
++		/* but it seems this is unnecessary */
++		if (host->blocks == 0)
++			break;
++
++
++	}
++}
++
++
++static void bcm2835_mmc_transfer_dma(struct bcm2835_host *host)
++{
++	u32 len, dir_data, dir_slave;
++	struct dma_async_tx_descriptor *desc = NULL;
++	struct dma_chan *dma_chan;
++
++
++	WARN_ON(!host->data);
++
++	if (!host->data)
++		return;
++
++	if (host->blocks == 0)
++		return;
++
++	dma_chan = host->dma_chan_rxtx;
++	if (host->data->flags & MMC_DATA_READ) {
++		dir_data = DMA_FROM_DEVICE;
++		dir_slave = DMA_DEV_TO_MEM;
++	} else {
++		dir_data = DMA_TO_DEVICE;
++		dir_slave = DMA_MEM_TO_DEV;
++	}
++
++	/* The parameters have already been validated, so this will not fail */
++	(void)dmaengine_slave_config(dma_chan,
++				     (dir_data == DMA_FROM_DEVICE) ?
++				     &host->dma_cfg_rx :
++				     &host->dma_cfg_tx);
++
++	BUG_ON(!dma_chan->device);
++	BUG_ON(!dma_chan->device->dev);
++	BUG_ON(!host->data->sg);
++
++	len = dma_map_sg(dma_chan->device->dev, host->data->sg,
++			 host->data->sg_len, dir_data);
++	if (len > 0) {
++		desc = dmaengine_prep_slave_sg(dma_chan, host->data->sg,
++					       len, dir_slave,
++					       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
++	} else {
++		dev_err(mmc_dev(host->mmc), "dma_map_sg returned zero length\n");
++	}
++	if (desc) {
++		unsigned long flags;
++		spin_lock_irqsave(&host->lock, flags);
++		bcm2835_mmc_unsignal_irqs(host, SDHCI_INT_DATA_AVAIL |
++						    SDHCI_INT_SPACE_AVAIL);
++		host->tx_desc = desc;
++		desc->callback = bcm2835_mmc_dma_complete;
++		desc->callback_param = host;
++		spin_unlock_irqrestore(&host->lock, flags);
++		dmaengine_submit(desc);
++		dma_async_issue_pending(dma_chan);
++	} else {
++		dma_unmap_sg(dma_chan->device->dev, host->data->sg, len, dir_data);
++	}
++
++}
++
++
++
++static void bcm2835_mmc_set_transfer_irqs(struct bcm2835_host *host)
++{
++	u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL;
++	u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR;
++
++	if (host->use_dma)
++		host->ier = (host->ier & ~pio_irqs) | dma_irqs;
++	else
++		host->ier = (host->ier & ~dma_irqs) | pio_irqs;
++
++	bcm2835_mmc_writel(host, host->ier, SDHCI_INT_ENABLE, 4);
++	bcm2835_mmc_writel(host, host->ier, SDHCI_SIGNAL_ENABLE, 4);
++}
++
++
++static void bcm2835_mmc_prepare_data(struct bcm2835_host *host, struct mmc_command *cmd)
++{
++	u8 count;
++	struct mmc_data *data = cmd->data;
++
++	WARN_ON(host->data);
++
++	if (data || (cmd->flags & MMC_RSP_BUSY)) {
++		count = TIMEOUT_VAL;
++		bcm2835_mmc_writeb(host, count, SDHCI_TIMEOUT_CONTROL);
++	}
++
++	if (!data)
++		return;
++
++	/* Sanity checks */
++	BUG_ON(data->blksz * data->blocks > 524288);
++	BUG_ON(data->blksz > host->mmc->max_blk_size);
++	BUG_ON(data->blocks > 65535);
++
++	host->data = data;
++	host->data_early = 0;
++	host->data->bytes_xfered = 0;
++
++
++	if (!(host->flags & SDHCI_REQ_USE_DMA)) {
++		int flags;
++
++		flags = SG_MITER_ATOMIC;
++		if (host->data->flags & MMC_DATA_READ)
++			flags |= SG_MITER_TO_SG;
++		else
++			flags |= SG_MITER_FROM_SG;
++		sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
++		host->blocks = data->blocks;
++	}
++
++	host->use_dma = host->have_dma && data->blocks > PIO_DMA_BARRIER;
++
++	bcm2835_mmc_set_transfer_irqs(host);
++
++	/* Set the DMA boundary value and block size */
++	bcm2835_mmc_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
++		data->blksz), SDHCI_BLOCK_SIZE);
++	bcm2835_mmc_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
++
++	BUG_ON(!host->data);
++}
++
++static void bcm2835_mmc_set_transfer_mode(struct bcm2835_host *host,
++	struct mmc_command *cmd)
++{
++	u16 mode;
++	struct mmc_data *data = cmd->data;
++
++	if (data == NULL) {
++		/* clear Auto CMD settings for no data CMDs */
++		mode = bcm2835_mmc_readw(host, SDHCI_TRANSFER_MODE);
++		bcm2835_mmc_writew(host, mode & ~(SDHCI_TRNS_AUTO_CMD12 |
++				SDHCI_TRNS_AUTO_CMD23), SDHCI_TRANSFER_MODE);
++		return;
++	}
++
++	WARN_ON(!host->data);
++
++	mode = SDHCI_TRNS_BLK_CNT_EN;
++
++	if ((mmc_op_multi(cmd->opcode) || data->blocks > 1)) {
++		mode |= SDHCI_TRNS_MULTI;
++
++		/*
++		 * If we are sending CMD23, CMD12 never gets sent
++		 * on successful completion (so no Auto-CMD12).
++		 */
++		if (!host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD12))
++			mode |= SDHCI_TRNS_AUTO_CMD12;
++		else if (host->mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
++			mode |= SDHCI_TRNS_AUTO_CMD23;
++			bcm2835_mmc_writel(host, host->mrq->sbc->arg, SDHCI_ARGUMENT2, 5);
++		}
++	}
++
++	if (data->flags & MMC_DATA_READ)
++		mode |= SDHCI_TRNS_READ;
++	if (host->flags & SDHCI_REQ_USE_DMA)
++		mode |= SDHCI_TRNS_DMA;
++
++	bcm2835_mmc_writew(host, mode, SDHCI_TRANSFER_MODE);
++}
++
++void bcm2835_mmc_send_command(struct bcm2835_host *host, struct mmc_command *cmd)
++{
++	int flags;
++	u32 mask;
++	unsigned long timeout;
++
++	WARN_ON(host->cmd);
++
++	/* Wait max 10 ms */
++	timeout = 1000;
++
++	mask = SDHCI_CMD_INHIBIT;
++	if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY))
++		mask |= SDHCI_DATA_INHIBIT;
++
++	/* We shouldn't wait for data inihibit for stop commands, even
++	   though they might use busy signaling */
++	if (host->mrq->data && (cmd == host->mrq->data->stop))
++		mask &= ~SDHCI_DATA_INHIBIT;
++
++	while (bcm2835_mmc_readl(host, SDHCI_PRESENT_STATE) & mask) {
++		if (timeout == 0) {
++			pr_err("%s: Controller never released inhibit bit(s).\n",
++				mmc_hostname(host->mmc));
++			bcm2835_mmc_dumpregs(host);
++			cmd->error = -EIO;
++			tasklet_schedule(&host->finish_tasklet);
++			return;
++		}
++		timeout--;
++		udelay(10);
++	}
++
++	if ((1000-timeout)/100 > 1 && (1000-timeout)/100 > host->max_delay) {
++		host->max_delay = (1000-timeout)/100;
++		pr_warn("Warning: MMC controller hung for %d ms\n", host->max_delay);
++	}
++
++	timeout = jiffies;
++	if (!cmd->data && cmd->busy_timeout > 9000)
++		timeout += DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ;
++	else
++		timeout += 10 * HZ;
++	mod_timer(&host->timer, timeout);
++
++	host->cmd = cmd;
++	host->use_dma = false;
++
++	bcm2835_mmc_prepare_data(host, cmd);
++
++	bcm2835_mmc_writel(host, cmd->arg, SDHCI_ARGUMENT, 6);
++
++	bcm2835_mmc_set_transfer_mode(host, cmd);
++
++	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
++		pr_err("%s: Unsupported response type!\n",
++			mmc_hostname(host->mmc));
++		cmd->error = -EINVAL;
++		tasklet_schedule(&host->finish_tasklet);
++		return;
++	}
++
++	if (!(cmd->flags & MMC_RSP_PRESENT))
++		flags = SDHCI_CMD_RESP_NONE;
++	else if (cmd->flags & MMC_RSP_136)
++		flags = SDHCI_CMD_RESP_LONG;
++	else if (cmd->flags & MMC_RSP_BUSY)
++		flags = SDHCI_CMD_RESP_SHORT_BUSY;
++	else
++		flags = SDHCI_CMD_RESP_SHORT;
++
++	if (cmd->flags & MMC_RSP_CRC)
++		flags |= SDHCI_CMD_CRC;
++	if (cmd->flags & MMC_RSP_OPCODE)
++		flags |= SDHCI_CMD_INDEX;
++
++	if (cmd->data)
++		flags |= SDHCI_CMD_DATA;
++
++	bcm2835_mmc_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
++}
++
++
++static void bcm2835_mmc_finish_data(struct bcm2835_host *host)
++{
++	struct mmc_data *data;
++
++	BUG_ON(!host->data);
++
++	data = host->data;
++	host->data = NULL;
++
++	if (data->error)
++		data->bytes_xfered = 0;
++	else
++		data->bytes_xfered = data->blksz * data->blocks;
++
++	/*
++	 * Need to send CMD12 if -
++	 * a) open-ended multiblock transfer (no CMD23)
++	 * b) error in multiblock transfer
++	 */
++	if (data->stop &&
++	    (data->error ||
++	     !host->mrq->sbc)) {
++
++		/*
++		 * The controller needs a reset of internal state machines
++		 * upon error conditions.
++		 */
++		if (data->error) {
++			bcm2835_mmc_reset(host, SDHCI_RESET_CMD);
++			bcm2835_mmc_reset(host, SDHCI_RESET_DATA);
++		}
++
++		bcm2835_mmc_send_command(host, data->stop);
++	} else if (host->use_dma) {
++		host->wait_for_dma = true;
++	} else {
++		tasklet_schedule(&host->finish_tasklet);
++	}
++}
++
++static void bcm2835_mmc_finish_command(struct bcm2835_host *host)
++{
++	int i;
++
++	BUG_ON(host->cmd == NULL);
++
++	if (host->cmd->flags & MMC_RSP_PRESENT) {
++		if (host->cmd->flags & MMC_RSP_136) {
++			/* CRC is stripped so we need to do some shifting. */
++			for (i = 0; i < 4; i++) {
++				host->cmd->resp[i] = bcm2835_mmc_readl(host,
++					SDHCI_RESPONSE + (3-i)*4) << 8;
++				if (i != 3)
++					host->cmd->resp[i] |=
++						bcm2835_mmc_readb(host,
++						SDHCI_RESPONSE + (3-i)*4-1);
++			}
++		} else {
++			host->cmd->resp[0] = bcm2835_mmc_readl(host, SDHCI_RESPONSE);
++		}
++	}
++
++	host->cmd->error = 0;
++
++	/* Finished CMD23, now send actual command. */
++	if (host->cmd == host->mrq->sbc) {
++		host->cmd = NULL;
++		bcm2835_mmc_send_command(host, host->mrq->cmd);
++
++		if (host->mrq->cmd->data && host->use_dma) {
++			/* DMA transfer starts now, PIO starts after interrupt */
++			bcm2835_mmc_transfer_dma(host);
++		}
++	} else {
++
++		/* Processed actual command. */
++		if (host->data && host->data_early)
++			bcm2835_mmc_finish_data(host);
++
++		if (!host->cmd->data)
++			tasklet_schedule(&host->finish_tasklet);
++
++		host->cmd = NULL;
++	}
++}
++
++
++static void bcm2835_mmc_timeout_timer(struct timer_list *t)
++{
++	struct bcm2835_host *host = from_timer(host, t, timer);
++	unsigned long flags;
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	if (host->mrq) {
++		pr_err("%s: Timeout waiting for hardware interrupt.\n",
++			mmc_hostname(host->mmc));
++		bcm2835_mmc_dumpregs(host);
++
++		if (host->data) {
++			host->data->error = -ETIMEDOUT;
++			bcm2835_mmc_finish_data(host);
++		} else {
++			if (host->cmd)
++				host->cmd->error = -ETIMEDOUT;
++			else
++				host->mrq->cmd->error = -ETIMEDOUT;
++
++			tasklet_schedule(&host->finish_tasklet);
++		}
++	}
++
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++
++static void bcm2835_mmc_enable_sdio_irq_nolock(struct bcm2835_host *host, int enable)
++{
++	if (!(host->flags & SDHCI_DEVICE_DEAD)) {
++		if (enable)
++			host->ier |= SDHCI_INT_CARD_INT;
++		else
++			host->ier &= ~SDHCI_INT_CARD_INT;
++
++		bcm2835_mmc_writel(host, host->ier, SDHCI_INT_ENABLE, 7);
++		bcm2835_mmc_writel(host, host->ier, SDHCI_SIGNAL_ENABLE, 7);
++	}
++}
++
++static void bcm2835_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
++{
++	struct bcm2835_host *host = mmc_priv(mmc);
++	unsigned long flags;
++
++	spin_lock_irqsave(&host->lock, flags);
++	if (enable)
++		host->flags |= SDHCI_SDIO_IRQ_ENABLED;
++	else
++		host->flags &= ~SDHCI_SDIO_IRQ_ENABLED;
++
++	bcm2835_mmc_enable_sdio_irq_nolock(host, enable);
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_mmc_cmd_irq(struct bcm2835_host *host, u32 intmask)
++{
++
++	BUG_ON(intmask == 0);
++
++	if (!host->cmd) {
++		pr_err("%s: Got command interrupt 0x%08x even "
++			"though no command operation was in progress.\n",
++			mmc_hostname(host->mmc), (unsigned)intmask);
++		bcm2835_mmc_dumpregs(host);
++		return;
++	}
++
++	if (intmask & SDHCI_INT_TIMEOUT)
++		host->cmd->error = -ETIMEDOUT;
++	else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT |
++			SDHCI_INT_INDEX)) {
++			host->cmd->error = -EILSEQ;
++	}
++
++	if (host->cmd->error) {
++		tasklet_schedule(&host->finish_tasklet);
++		return;
++	}
++
++	if (intmask & SDHCI_INT_RESPONSE)
++		bcm2835_mmc_finish_command(host);
++
++}
++
++static void bcm2835_mmc_data_irq(struct bcm2835_host *host, u32 intmask)
++{
++	struct dma_chan *dma_chan;
++	u32 dir_data;
++
++	BUG_ON(intmask == 0);
++
++	if (!host->data) {
++		/*
++		 * The "data complete" interrupt is also used to
++		 * indicate that a busy state has ended. See comment
++		 * above in sdhci_cmd_irq().
++		 */
++		if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) {
++			if (intmask & SDHCI_INT_DATA_END) {
++				bcm2835_mmc_finish_command(host);
++				return;
++			}
++		}
++
++		pr_debug("%s: Got data interrupt 0x%08x even "
++			"though no data operation was in progress.\n",
++			mmc_hostname(host->mmc), (unsigned)intmask);
++		bcm2835_mmc_dumpregs(host);
++
++		return;
++	}
++
++	if (intmask & SDHCI_INT_DATA_TIMEOUT)
++		host->data->error = -ETIMEDOUT;
++	else if (intmask & SDHCI_INT_DATA_END_BIT)
++		host->data->error = -EILSEQ;
++	else if ((intmask & SDHCI_INT_DATA_CRC) &&
++		SDHCI_GET_CMD(bcm2835_mmc_readw(host, SDHCI_COMMAND))
++			!= MMC_BUS_TEST_R)
++		host->data->error = -EILSEQ;
++
++	if (host->use_dma) {
++		if  (host->data->flags & MMC_DATA_WRITE) {
++			/* IRQ handled here */
++
++			dma_chan = host->dma_chan_rxtx;
++			dir_data = DMA_TO_DEVICE;
++			dma_unmap_sg(dma_chan->device->dev,
++				 host->data->sg, host->data->sg_len,
++				 dir_data);
++
++			bcm2835_mmc_finish_data(host);
++		}
++
++	} else {
++		if (host->data->error)
++			bcm2835_mmc_finish_data(host);
++		else {
++			if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL))
++				bcm2835_mmc_transfer_pio(host);
++
++			if (intmask & SDHCI_INT_DATA_END) {
++				if (host->cmd) {
++					/*
++					 * Data managed to finish before the
++					 * command completed. Make sure we do
++					 * things in the proper order.
++					 */
++					host->data_early = 1;
++				} else {
++					bcm2835_mmc_finish_data(host);
++				}
++			}
++		}
++	}
++}
++
++
++static irqreturn_t bcm2835_mmc_irq(int irq, void *dev_id)
++{
++	irqreturn_t result = IRQ_NONE;
++	struct bcm2835_host *host = dev_id;
++	u32 intmask, mask, unexpected = 0;
++	int max_loops = 16;
++
++	spin_lock(&host->lock);
++
++	intmask = bcm2835_mmc_readl(host, SDHCI_INT_STATUS);
++
++	if (!intmask || intmask == 0xffffffff) {
++		result = IRQ_NONE;
++		goto out;
++	}
++
++	do {
++		/* Clear selected interrupts. */
++		mask = intmask & (SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK |
++				  SDHCI_INT_BUS_POWER);
++		bcm2835_mmc_writel(host, mask, SDHCI_INT_STATUS, 8);
++
++
++		if (intmask & SDHCI_INT_CMD_MASK)
++			bcm2835_mmc_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
++
++		if (intmask & SDHCI_INT_DATA_MASK)
++			bcm2835_mmc_data_irq(host, intmask & SDHCI_INT_DATA_MASK);
++
++		if (intmask & SDHCI_INT_BUS_POWER)
++			pr_err("%s: Card is consuming too much power!\n",
++				mmc_hostname(host->mmc));
++
++		if (intmask & SDHCI_INT_CARD_INT) {
++			bcm2835_mmc_enable_sdio_irq_nolock(host, false);
++			sdio_signal_irq(host->mmc);
++		}
++
++		intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE |
++			     SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK |
++			     SDHCI_INT_ERROR | SDHCI_INT_BUS_POWER |
++			     SDHCI_INT_CARD_INT);
++
++		if (intmask) {
++			unexpected |= intmask;
++			bcm2835_mmc_writel(host, intmask, SDHCI_INT_STATUS, 9);
++		}
++
++		if (result == IRQ_NONE)
++			result = IRQ_HANDLED;
++
++		intmask = bcm2835_mmc_readl(host, SDHCI_INT_STATUS);
++	} while (intmask && --max_loops);
++out:
++	spin_unlock(&host->lock);
++
++	if (unexpected) {
++		pr_err("%s: Unexpected interrupt 0x%08x.\n",
++			   mmc_hostname(host->mmc), unexpected);
++		bcm2835_mmc_dumpregs(host);
++	}
++
++	return result;
++}
++
++
++static void bcm2835_mmc_ack_sdio_irq(struct mmc_host *mmc)
++{
++	struct bcm2835_host *host = mmc_priv(mmc);
++	unsigned long flags;
++
++	spin_lock_irqsave(&host->lock, flags);
++	if (host->flags & SDHCI_SDIO_IRQ_ENABLED)
++		bcm2835_mmc_enable_sdio_irq_nolock(host, true);
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++void bcm2835_mmc_set_clock(struct bcm2835_host *host, unsigned int clock)
++{
++	int div = 0; /* Initialized for compiler warning */
++	int real_div = div, clk_mul = 1;
++	u16 clk = 0;
++	unsigned long timeout;
++	unsigned int input_clock = clock;
++
++	if (host->overclock_50 && (clock == 50000000))
++		clock = host->overclock_50 * 1000000 + 999999;
++
++	host->mmc->actual_clock = 0;
++
++	bcm2835_mmc_writew(host, 0, SDHCI_CLOCK_CONTROL);
++
++	if (clock == 0)
++		return;
++
++	/* Version 3.00 divisors must be a multiple of 2. */
++	if (host->max_clk <= clock)
++		div = 1;
++	else {
++		for (div = 2; div < SDHCI_MAX_DIV_SPEC_300;
++			 div += 2) {
++			if ((host->max_clk / div) <= clock)
++				break;
++		}
++	}
++
++	real_div = div;
++	div >>= 1;
++
++	if (real_div)
++		clock = (host->max_clk * clk_mul) / real_div;
++	host->mmc->actual_clock = clock;
++
++	if ((clock > input_clock) && (clock > host->max_overclock)) {
++		pr_warn("%s: Overclocking to %dHz\n",
++			mmc_hostname(host->mmc), clock);
++		host->max_overclock = clock;
++	}
++
++	clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
++	clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
++		<< SDHCI_DIVIDER_HI_SHIFT;
++	clk |= SDHCI_CLOCK_INT_EN;
++	bcm2835_mmc_writew(host, clk, SDHCI_CLOCK_CONTROL);
++
++	/* Wait max 20 ms */
++	timeout = 20;
++	while (!((clk = bcm2835_mmc_readw(host, SDHCI_CLOCK_CONTROL))
++		& SDHCI_CLOCK_INT_STABLE)) {
++		if (timeout == 0) {
++			pr_err("%s: Internal clock never "
++				"stabilised.\n", mmc_hostname(host->mmc));
++			bcm2835_mmc_dumpregs(host);
++			return;
++		}
++		timeout--;
++		mdelay(1);
++	}
++
++	if (20-timeout > 10 && 20-timeout > host->max_delay) {
++		host->max_delay = 20-timeout;
++		pr_warn("Warning: MMC controller hung for %d ms\n", host->max_delay);
++	}
++
++	clk |= SDHCI_CLOCK_CARD_EN;
++	bcm2835_mmc_writew(host, clk, SDHCI_CLOCK_CONTROL);
++}
++
++static void bcm2835_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
++{
++	struct bcm2835_host *host;
++	unsigned long flags;
++
++	host = mmc_priv(mmc);
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	WARN_ON(host->mrq != NULL);
++
++	host->mrq = mrq;
++
++	if (mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23))
++		bcm2835_mmc_send_command(host, mrq->sbc);
++	else
++		bcm2835_mmc_send_command(host, mrq->cmd);
++
++	spin_unlock_irqrestore(&host->lock, flags);
++
++	if (!(mrq->sbc && !(host->flags & SDHCI_AUTO_CMD23)) && mrq->cmd->data && host->use_dma) {
++		/* DMA transfer starts now, PIO starts after interrupt */
++		bcm2835_mmc_transfer_dma(host);
++	}
++}
++
++
++static void bcm2835_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
++{
++
++	struct bcm2835_host *host = mmc_priv(mmc);
++	unsigned long flags;
++	u8 ctrl;
++	u16 clk, ctrl_2;
++
++	pr_debug("bcm2835_mmc_set_ios: clock %d, pwr %d, bus_width %d, timing %d, vdd %d, drv_type %d\n",
++		 ios->clock, ios->power_mode, ios->bus_width,
++		 ios->timing, ios->signal_voltage, ios->drv_type);
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	if (!ios->clock || ios->clock != host->clock) {
++		bcm2835_mmc_set_clock(host, ios->clock);
++		host->clock = ios->clock;
++	}
++
++	if (host->pwr != SDHCI_POWER_330) {
++		host->pwr = SDHCI_POWER_330;
++		bcm2835_mmc_writeb(host, SDHCI_POWER_330 | SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
++	}
++
++	ctrl = bcm2835_mmc_readb(host, SDHCI_HOST_CONTROL);
++
++	/* set bus width */
++	ctrl &= ~SDHCI_CTRL_8BITBUS;
++	if (ios->bus_width == MMC_BUS_WIDTH_4)
++		ctrl |= SDHCI_CTRL_4BITBUS;
++	else
++		ctrl &= ~SDHCI_CTRL_4BITBUS;
++
++	ctrl &= ~SDHCI_CTRL_HISPD; /* NO_HISPD_BIT */
++
++
++	bcm2835_mmc_writeb(host, ctrl, SDHCI_HOST_CONTROL);
++	/*
++	 * We only need to set Driver Strength if the
++	 * preset value enable is not set.
++	 */
++	ctrl_2 = bcm2835_mmc_readw(host, SDHCI_HOST_CONTROL2);
++	ctrl_2 &= ~SDHCI_CTRL_DRV_TYPE_MASK;
++	if (ios->drv_type == MMC_SET_DRIVER_TYPE_A)
++		ctrl_2 |= SDHCI_CTRL_DRV_TYPE_A;
++	else if (ios->drv_type == MMC_SET_DRIVER_TYPE_C)
++		ctrl_2 |= SDHCI_CTRL_DRV_TYPE_C;
++
++	bcm2835_mmc_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
++
++	/* Reset SD Clock Enable */
++	clk = bcm2835_mmc_readw(host, SDHCI_CLOCK_CONTROL);
++	clk &= ~SDHCI_CLOCK_CARD_EN;
++	bcm2835_mmc_writew(host, clk, SDHCI_CLOCK_CONTROL);
++
++	/* Re-enable SD Clock */
++	bcm2835_mmc_set_clock(host, host->clock);
++	bcm2835_mmc_writeb(host, ctrl, SDHCI_HOST_CONTROL);
++
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++
++static struct mmc_host_ops bcm2835_ops = {
++	.request = bcm2835_mmc_request,
++	.set_ios = bcm2835_mmc_set_ios,
++	.enable_sdio_irq = bcm2835_mmc_enable_sdio_irq,
++	.ack_sdio_irq = bcm2835_mmc_ack_sdio_irq,
++};
++
++
++static void bcm2835_mmc_tasklet_finish(unsigned long param)
++{
++	struct bcm2835_host *host;
++	unsigned long flags;
++	struct mmc_request *mrq;
++
++	host = (struct bcm2835_host *)param;
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	/*
++	 * If this tasklet gets rescheduled while running, it will
++	 * be run again afterwards but without any active request.
++	 */
++	if (!host->mrq) {
++		spin_unlock_irqrestore(&host->lock, flags);
++		return;
++	}
++
++	del_timer(&host->timer);
++
++	mrq = host->mrq;
++
++	/*
++	 * The controller needs a reset of internal state machines
++	 * upon error conditions.
++	 */
++	if (!(host->flags & SDHCI_DEVICE_DEAD) &&
++	    ((mrq->cmd && mrq->cmd->error) ||
++		 (mrq->data && (mrq->data->error ||
++		  (mrq->data->stop && mrq->data->stop->error))))) {
++
++		spin_unlock_irqrestore(&host->lock, flags);
++		bcm2835_mmc_reset(host, SDHCI_RESET_CMD);
++		bcm2835_mmc_reset(host, SDHCI_RESET_DATA);
++		spin_lock_irqsave(&host->lock, flags);
++	}
++
++	host->mrq = NULL;
++	host->cmd = NULL;
++	host->data = NULL;
++
++	spin_unlock_irqrestore(&host->lock, flags);
++	mmc_request_done(host->mmc, mrq);
++}
++
++
++
++static int bcm2835_mmc_add_host(struct bcm2835_host *host)
++{
++	struct mmc_host *mmc = host->mmc;
++	struct device *dev = mmc->parent;
++#ifndef FORCE_PIO
++	struct dma_slave_config cfg;
++#endif
++	int ret;
++
++	bcm2835_mmc_reset(host, SDHCI_RESET_ALL);
++
++	host->clk_mul = 0;
++
++	if (!mmc->f_max || mmc->f_max > host->max_clk)
++		mmc->f_max = host->max_clk;
++	mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;
++
++	/* SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK */
++	host->timeout_clk = mmc->f_max / 1000;
++	mmc->max_busy_timeout = (1 << 27) / host->timeout_clk;
++
++	/* host controller capabilities */
++	mmc->caps |= MMC_CAP_CMD23 | MMC_CAP_NEEDS_POLL |
++		MMC_CAP_SDIO_IRQ | MMC_CAP_SD_HIGHSPEED |
++		MMC_CAP_MMC_HIGHSPEED;
++
++	mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
++
++	host->flags = SDHCI_AUTO_CMD23;
++
++	dev_info(dev, "mmc_debug:%x mmc_debug2:%x\n", mmc_debug, mmc_debug2);
++#ifdef FORCE_PIO
++	dev_info(dev, "Forcing PIO mode\n");
++	host->have_dma = false;
++#else
++	if (IS_ERR_OR_NULL(host->dma_chan_rxtx)) {
++		dev_err(dev, "%s: Unable to initialise DMA channel. Falling back to PIO\n",
++			DRIVER_NAME);
++		host->have_dma = false;
++	} else {
++		dev_info(dev, "DMA channel allocated");
++
++		cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
++		cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
++		cfg.slave_id = 11;		/* DREQ channel */
++
++		/* Validate the slave configurations */
++
++		cfg.direction = DMA_MEM_TO_DEV;
++		cfg.src_addr = 0;
++		cfg.dst_addr = host->bus_addr + SDHCI_BUFFER;
++
++		ret = dmaengine_slave_config(host->dma_chan_rxtx, &cfg);
++
++		if (ret == 0) {
++			host->dma_cfg_tx = cfg;
++
++			cfg.direction = DMA_DEV_TO_MEM;
++			cfg.src_addr = host->bus_addr + SDHCI_BUFFER;
++			cfg.dst_addr = 0;
++
++			ret = dmaengine_slave_config(host->dma_chan_rxtx, &cfg);
++		}
++
++		if (ret == 0) {
++			host->dma_cfg_rx = cfg;
++
++			host->have_dma = true;
++		} else {
++			pr_err("%s: unable to configure DMA channel. "
++			       "Falling back to PIO\n",
++			       mmc_hostname(mmc));
++			dma_release_channel(host->dma_chan_rxtx);
++			host->dma_chan_rxtx = NULL;
++			host->have_dma = false;
++		}
++	}
++#endif
++	mmc->max_segs = 128;
++	if (swiotlb_max_segment())
++		mmc->max_req_size = (1 << IO_TLB_SHIFT) * IO_TLB_SEGSIZE;
++	else
++		mmc->max_req_size = 524288;
++	mmc->max_seg_size = mmc->max_req_size;
++	mmc->max_blk_size = 512;
++	mmc->max_blk_count =  65535;
++
++	/* report supported voltage ranges */
++	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
++
++	tasklet_init(&host->finish_tasklet,
++		bcm2835_mmc_tasklet_finish, (unsigned long)host);
++
++	timer_setup(&host->timer, bcm2835_mmc_timeout_timer, 0);
++	init_waitqueue_head(&host->buf_ready_int);
++
++	bcm2835_mmc_init(host, 0);
++	ret = request_irq(host->irq, bcm2835_mmc_irq, IRQF_SHARED,
++				   mmc_hostname(mmc), host);
++	if (ret) {
++		dev_err(dev, "Failed to request IRQ %d: %d\n", host->irq, ret);
++		goto untasklet;
++	}
++
++	ret = mmc_add_host(mmc);
++	if (ret) {
++		dev_err(dev, "could not add MMC host\n");
++		goto free_irq;
++	}
++
++	return 0;
++
++free_irq:
++	free_irq(host->irq, host);
++untasklet:
++	tasklet_kill(&host->finish_tasklet);
++
++	return ret;
++}
++
++static int bcm2835_mmc_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct device_node *node = dev->of_node;
++	struct clk *clk;
++	struct resource *iomem;
++	struct bcm2835_host *host;
++	struct mmc_host *mmc;
++	const __be32 *addr;
++	int ret;
++
++	mmc = mmc_alloc_host(sizeof(*host), dev);
++	if (!mmc)
++		return -ENOMEM;
++
++	mmc->ops = &bcm2835_ops;
++	host = mmc_priv(mmc);
++	host->mmc = mmc;
++	host->timeout = msecs_to_jiffies(1000);
++	spin_lock_init(&host->lock);
++
++	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	host->ioaddr = devm_ioremap_resource(dev, iomem);
++	if (IS_ERR(host->ioaddr)) {
++		ret = PTR_ERR(host->ioaddr);
++		goto err;
++	}
++
++	addr = of_get_address(node, 0, NULL, NULL);
++	if (!addr) {
++		dev_err(dev, "could not get DMA-register address\n");
++		ret = -ENODEV;
++		goto err;
++	}
++	host->bus_addr = be32_to_cpup(addr);
++	pr_debug(" - ioaddr %lx, iomem->start %lx, bus_addr %lx\n",
++		 (unsigned long)host->ioaddr,
++		 (unsigned long)iomem->start,
++		 (unsigned long)host->bus_addr);
++
++#ifndef FORCE_PIO
++	if (node) {
++		host->dma_chan_rxtx = dma_request_slave_channel(dev, "rx-tx");
++		if (!host->dma_chan_rxtx)
++			host->dma_chan_rxtx =
++				dma_request_slave_channel(dev, "tx");
++		if (!host->dma_chan_rxtx)
++			host->dma_chan_rxtx =
++				dma_request_slave_channel(dev, "rx");
++	} else {
++		dma_cap_mask_t mask;
++
++		dma_cap_zero(mask);
++		/* we don't care about the channel, any would work */
++		dma_cap_set(DMA_SLAVE, mask);
++		host->dma_chan_rxtx = dma_request_channel(mask, NULL, NULL);
++	}
++#endif
++	clk = devm_clk_get(dev, NULL);
++	if (IS_ERR(clk)) {
++		ret = PTR_ERR(clk);
++		if (ret == -EPROBE_DEFER)
++			dev_info(dev, "could not get clk, deferring probe\n");
++		else
++			dev_err(dev, "could not get clk\n");
++		goto err;
++	}
++
++	host->max_clk = clk_get_rate(clk);
++
++	host->irq = platform_get_irq(pdev, 0);
++	if (host->irq <= 0) {
++		dev_err(dev, "get IRQ failed\n");
++		ret = -EINVAL;
++		goto err;
++	}
++
++	if (node) {
++		mmc_of_parse(mmc);
++
++		/* Read any custom properties */
++		of_property_read_u32(node,
++				     "brcm,overclock-50",
++				     &host->overclock_50);
++	} else {
++		mmc->caps |= MMC_CAP_4_BIT_DATA;
++	}
++
++	ret = bcm2835_mmc_add_host(host);
++	if (ret)
++		goto err;
++
++	platform_set_drvdata(pdev, host);
++
++	return 0;
++err:
++	if (host->dma_chan_rxtx)
++		dma_release_channel(host->dma_chan_rxtx);
++	mmc_free_host(mmc);
++
++	return ret;
++}
++
++static int bcm2835_mmc_remove(struct platform_device *pdev)
++{
++	struct bcm2835_host *host = platform_get_drvdata(pdev);
++	unsigned long flags;
++	int dead;
++	u32 scratch;
++
++	dead = 0;
++	scratch = bcm2835_mmc_readl(host, SDHCI_INT_STATUS);
++	if (scratch == (u32)-1)
++		dead = 1;
++
++
++	if (dead) {
++		spin_lock_irqsave(&host->lock, flags);
++
++		host->flags |= SDHCI_DEVICE_DEAD;
++
++		if (host->mrq) {
++			pr_err("%s: Controller removed during "
++				" transfer!\n", mmc_hostname(host->mmc));
++
++			host->mrq->cmd->error = -ENOMEDIUM;
++			tasklet_schedule(&host->finish_tasklet);
++		}
++
++		spin_unlock_irqrestore(&host->lock, flags);
++	}
++
++	mmc_remove_host(host->mmc);
++
++	if (!dead)
++		bcm2835_mmc_reset(host, SDHCI_RESET_ALL);
++
++	free_irq(host->irq, host);
++
++	del_timer_sync(&host->timer);
++
++	tasklet_kill(&host->finish_tasklet);
++
++	if (host->dma_chan_rxtx)
++		dma_release_channel(host->dma_chan_rxtx);
++
++	mmc_free_host(host->mmc);
++
++	return 0;
++}
++
++
++static const struct of_device_id bcm2835_mmc_match[] = {
++	{ .compatible = "brcm,bcm2835-mmc" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, bcm2835_mmc_match);
++
++
++
++static struct platform_driver bcm2835_mmc_driver = {
++	.probe      = bcm2835_mmc_probe,
++	.remove     = bcm2835_mmc_remove,
++	.driver     = {
++		.name		= DRIVER_NAME,
++		.owner		= THIS_MODULE,
++		.of_match_table	= bcm2835_mmc_match,
++	},
++};
++module_platform_driver(bcm2835_mmc_driver);
++
++module_param(mmc_debug, uint, 0644);
++module_param(mmc_debug2, uint, 0644);
++MODULE_ALIAS("platform:mmc-bcm2835");
++MODULE_DESCRIPTION("BCM2835 SDHCI driver");
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Gellert Weisz");
+--- a/drivers/mmc/host/sdhci-iproc.c
++++ b/drivers/mmc/host/sdhci-iproc.c
+@@ -173,6 +173,17 @@ static unsigned int sdhci_iproc_get_max_
+ 		return pltfm_host->clock;
+ }
+ 
++static void sdhci_iproc_set_power(struct sdhci_host *host, unsigned char mode,
++				  unsigned short vdd)
++{
++	if (!IS_ERR(host->mmc->supply.vmmc)) {
++		struct mmc_host *mmc = host->mmc;
++
++		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
++	}
++	sdhci_set_power_noreg(host, mode, vdd);
++}
++
+ /*
+  * There is a known bug on BCM2711's SDHCI core integration where the
+  * controller will hang when the difference between the core clock and the bus
+@@ -207,6 +218,7 @@ static const struct sdhci_ops sdhci_ipro
+ 	.write_b = sdhci_iproc_writeb,
+ 	.set_clock = sdhci_set_clock,
+ 	.get_max_clock = sdhci_iproc_get_max_clock,
++	.set_power = sdhci_iproc_set_power,
+ 	.set_bus_width = sdhci_set_bus_width,
+ 	.reset = sdhci_reset,
+ 	.set_uhs_signaling = sdhci_set_uhs_signaling,
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -40,7 +40,7 @@
+ 	pr_debug("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
+ 
+ #define SDHCI_DUMP(f, x...) \
+-	pr_err("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
++	pr_debug("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
+ 
+ #define MAX_TUNING_LOOP 40
+ 
+@@ -3143,7 +3143,7 @@ static void sdhci_timeout_timer(struct t
+ 	spin_lock_irqsave(&host->lock, flags);
+ 
+ 	if (host->cmd && !sdhci_data_line_cmd(host->cmd)) {
+-		pr_err("%s: Timeout waiting for hardware cmd interrupt.\n",
++		pr_debug("%s: Timeout waiting for hardware cmd interrupt.\n",
+ 		       mmc_hostname(host->mmc));
+ 		sdhci_dumpregs(host);
+ 
+@@ -3165,7 +3165,7 @@ static void sdhci_timeout_data_timer(str
+ 
+ 	if (host->data || host->data_cmd ||
+ 	    (host->cmd && sdhci_data_line_cmd(host->cmd))) {
+-		pr_err("%s: Timeout waiting for hardware interrupt.\n",
++		pr_debug("%s: Timeout waiting for hardware interrupt.\n",
+ 		       mmc_hostname(host->mmc));
+ 		sdhci_dumpregs(host);
+ 
+--- a/include/linux/mmc/card.h
++++ b/include/linux/mmc/card.h
+@@ -293,6 +293,8 @@ struct mmc_card {
+ #define MMC_QUIRK_TRIM_BROKEN	(1<<12)		/* Skip trim */
+ #define MMC_QUIRK_BROKEN_HPI	(1<<13)		/* Disable broken HPI support */
+ 
++#define MMC_QUIRK_ERASE_BROKEN	(1<<31)		/* Skip erase */
++
+ 	bool			reenable_cmdq;	/* Re-enable Command Queue */
+ 
+ 	unsigned int		erase_size;	/* erase size in sectors */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0071-Adding-bcm2835-sdhost-driver-and-an-overlay-to-enabl.patch b/target/linux/bcm27xx/patches-5.15/950-0071-Adding-bcm2835-sdhost-driver-and-an-overlay-to-enabl.patch
new file mode 100644
index 0000000000..3b18a59bed
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0071-Adding-bcm2835-sdhost-driver-and-an-overlay-to-enabl.patch
@@ -0,0 +1,2501 @@
+From 1f9519b68dad61a179658fdaf3faf50a617a22f8 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 25 Mar 2015 17:49:47 +0000
+Subject: [PATCH] Adding bcm2835-sdhost driver, and an overlay to
+ enable it
+
+BCM2835 has two SD card interfaces. This driver uses the other one.
+
+bcm2835-sdhost: Error handling fix, and code clarification
+
+bcm2835-sdhost: Adding overclocking option
+
+Allow a different clock speed to be substitued for a requested 50MHz.
+This option is exposed using the "overclock_50" DT parameter.
+Note that the sdhost interface is restricted to integer divisions of
+core_freq, and the highest sensible option for a core_freq of 250MHz
+is 84 (250/3 = 83.3MHz), the next being 125 (250/2) which is much too
+high.
+
+Use at your own risk.
+
+bcm2835-sdhost: Round up the overclock, so 62 works for 62.5Mhz
+
+Also only warn once for each overclock setting.
+
+bcm2835-sdhost: Improve error handling and recovery
+
+1) Expose the hw_reset method to the MMC framework, removing many
+   internal calls by the driver.
+
+2) Reduce overclock setting on error.
+
+3) Increase timeout to cope with high capacity cards.
+
+4) Add properties and parameters to control pio_limit and debug.
+
+5) Reduce messages at probe time.
+
+bcm2835-sdhost: Further improve overclock back-off
+
+bcm2835-sdhost: Clear HBLC for PIO mode
+
+Also update pio_limit default in overlay README.
+
+bcm2835-sdhost: Add the ERASE capability
+
+See: https://github.com/raspberrypi/linux/issues/1076
+
+bcm2835-sdhost: Ignore CRC7 for MMC CMD1
+
+It seems that the sdhost interface returns CRC7 errors for CMD1,
+which is the MMC-specific SEND_OP_COND. Returning these errors to
+the MMC layer causes a downward spiral, but ignoring them seems
+to be harmless.
+
+bcm2835-mmc/sdhost: Remove ARCH_BCM2835 differences
+
+The bcm2835-mmc driver (and -sdhost driver that copied from it)
+contains code to handle SDIO interrupts in a threaded interrupt
+handler rather than waking the MMC framework thread. The change
+follows a patch from Russell King that adds the facility as the
+preferred way of working.
+
+However, the new code path is only present in ARCH_BCM2835
+builds, which I have taken to be a way of testing the waters
+rather than making the change across the board; I can't see
+any technical reason why it wouldn't be enabled for MACH_BCM270X
+builds. So this patch standardises on the ARCH_BCM2835 code,
+removing the old code paths.
+
+bcm2835-sdhost: Don't log timeout errors unless debug=1
+
+The MMC card-discovery process generates timeouts. This is
+expected behaviour, so reporting it to the user serves no purpose.
+Suppress the reporting of timeout errors unless the debug flag
+is on.
+
+bcm2835-sdhost: Add workaround for odd behaviour on some cards
+
+For reasons not understood, the sdhost driver fails when reading
+sectors very near the end of some SD cards. The problem could
+be related to the similar issue that reading the final sector
+of any card as part of a multiple read never completes, and the
+workaround is an extension of the mechanism introduced to solve
+that problem which ensures those sectors are always read singly.
+
+bcm2835-sdhost: Major revision
+
+This is a significant revision of the bcm2835-sdhost driver. It
+improves on the original in a number of ways:
+
+1) Through the use of CMD23 for reads it appears to avoid problems
+   reading some sectors on certain high speed cards.
+2) Better atomicity to prevent crashes.
+3) Higher performance.
+4) Activity logging included, for easier diagnosis in the event
+   of a problem.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Restore ATOMIC flag to PIO sg mapping
+
+Allocation problems have been seen in a wireless driver, and
+this is the only change which might have been responsible.
+
+SQUASH: bcm2835-sdhost: Only claim one DMA channel
+
+With both MMC controllers enabled there are few DMA channels left. The
+bcm2835-sdhost driver only uses DMA in one direction at a time, so it
+doesn't need to claim two channels.
+
+See: https://github.com/raspberrypi/linux/issues/1327
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Workaround for "slow" sectors
+
+Some cards have been seen to cause timeouts after certain sectors are
+read. This workaround enforces a minimum delay between the stop after
+reading one of those sectors and a subsequent data command.
+
+Using CMD23 (SET_BLOCK_COUNT) avoids this problem, so good cards will
+not be penalised by this workaround.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Firmware manages the clock divisor
+
+The bcm2835-sdhost driver hands control of the CDIV clock divisor
+register to matching firmware, allowing it to adjust to a changing
+core clock. This removes the need to use the performance governor or
+to enable io_is_busy on the on-demand governor in order to get the
+best SD performance.
+
+N.B. As SD clocks must be an integer divisor of the core clock, it is
+possible that the SD clock for "turbo" mode can be different (even
+lower) than "normal" mode.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Reset the clock in task context
+
+Since reprogramming the clock can now involve a round-trip to the
+firmware it must not be done at atomic context, and a tasklet
+is not a task.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Don't exit cmd wait loop on error
+
+The FAIL flag can be set in the CMD register before command processing
+is complete, leading to spurious "failed to complete" errors. This has
+the effect of promoting harmless CRC7 errors during CMD1 processing
+into errors that can delay and even prevent booting.
+
+Also:
+1) Convert the last KERN_ERROR message in the register dumping to
+   KERN_INFO.
+2) Remove an unnecessary reset call from  bcm2835_sdhost_add_host.
+
+See: https://github.com/raspberrypi/linux/pull/1492
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: mmc_card_blockaddr fix
+
+Get the definition of mmc_card_blockaddr from drivers/mmc/core/card.h.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: New timer API
+
+mmc: bcm2835-sdhost: Support underclocking
+
+Support underclocking of the SD bus in two ways:
+1. using the max-frequency DT property (which currently has no DT
+   parameter), and
+2. using the exiting sd_overclock parameter.
+
+The two methods differ slightly - in the former the MMC subsystem is
+aware of the underclocking, while in the latter it isn't - but the
+end results should be the same.
+
+See: https://github.com/raspberrypi/linux/issues/2350
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+mmc: bcm2835-sdhost: Add include
+
+highmem.h (needed for kmap_atomic) is pulled in by one of the other
+include files, but only with some CONFIG settings. Make the inclusion
+explicit to cater for cases where the CONFIG setting is absent.
+
+See: https://github.com/raspberrypi/linux/issues/2366
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+mmc/bcm2835-sdhost: Recover from MMC_SEND_EXT_CSD
+
+If the user issues an "mmc extcsd read", the SD controller receives
+what it thinks is a SEND_IF_COND command with an unexpected data block.
+The resulting operations leave the FSM stuck in READWAIT, a state which
+persists until the MMC framework resets the controller, by which point
+the root filesystem is likely to have been unmounted.
+
+A less heavyweight solution is to detect the condition and nudge the
+FSM by asserting the (self-clearing) FORCE_DATA_MODE bit.
+
+N.B. This workaround was essentially discovered by accident and without
+a full understanding the inner workings of the controller, so it is
+fortunate that the "fix" only modifies error paths.
+
+See: https://github.com/raspberrypi/linux/issues/2728
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+mmc: bcm2835-sdhost: Fix warnings on arm64
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Allow for sg entries that cross pages
+
+The dma_complete handling code calculates a virtual address for a page
+then adds an offset, but if the offset is more than a page and HIGHMEM
+is in use then the summed address could be in an unmapped (or just
+incorrect) page.
+
+The upstream SDHOST driver allows for this possibility - copy the code
+that does so.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Fix DMA channel leak on error/remove
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+mmc: bcm2835-sdhost: Support 64-bit physical addresses
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+bcm2835-sdhost: Replace obsolete struct timeval
+
+struct timeval has been retired due to the impending linux 32-bit tv_sec
+rollover (only 18 years to go) - timespec64 is the obvious replacement.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+mmc: sdhost: Pass DT pointer to rpi_firmware_get
+
+Using the rpi_firmware API as intended allows proper reference counting
+of the firmware device and means we can remove a downstream patch to
+the firmware driver.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/mmc/host/Kconfig          |   10 +
+ drivers/mmc/host/Makefile         |    1 +
+ drivers/mmc/host/bcm2835-sdhost.c | 2208 +++++++++++++++++++++++++++++
+ 3 files changed, 2219 insertions(+)
+ create mode 100644 drivers/mmc/host/bcm2835-sdhost.c
+
+--- a/drivers/mmc/host/Kconfig
++++ b/drivers/mmc/host/Kconfig
+@@ -34,6 +34,16 @@ config MMC_BCM2835_PIO_DMA_BARRIER
+ 
+ 	  If unsure, say 2 here.
+ 
++config MMC_BCM2835_SDHOST
++	tristate "Support for the SDHost controller on BCM2708/9"
++	depends on ARCH_BCM2835
++	help
++	  This selects the SDHost controller on BCM2835/6.
++
++	  If you have a controller with this interface, say Y or M here.
++
++	  If unsure, say N.
++
+ config MMC_DEBUG
+ 	bool "MMC host drivers debugging"
+ 	depends on MMC != n
+--- a/drivers/mmc/host/Makefile
++++ b/drivers/mmc/host/Makefile
+@@ -24,6 +24,7 @@ obj-$(CONFIG_MMC_SDHCI_MILBEAUT)	+= sdhc
+ obj-$(CONFIG_MMC_SDHCI_SPEAR)	+= sdhci-spear.o
+ obj-$(CONFIG_MMC_SDHCI_AM654)	+= sdhci_am654.o
+ obj-$(CONFIG_MMC_BCM2835_MMC)	+= bcm2835-mmc.o
++obj-$(CONFIG_MMC_BCM2835_SDHOST)	+= bcm2835-sdhost.o
+ obj-$(CONFIG_MMC_WBSD)		+= wbsd.o
+ obj-$(CONFIG_MMC_AU1X)		+= au1xmmc.o
+ obj-$(CONFIG_MMC_ALCOR)	+= alcor.o
+--- /dev/null
++++ b/drivers/mmc/host/bcm2835-sdhost.c
+@@ -0,0 +1,2208 @@
++/*
++ * BCM2835 SD host driver.
++ *
++ * Author:      Phil Elwell <phil@raspberrypi.org>
++ *              Copyright (C) 2015-2016 Raspberry Pi (Trading) Ltd.
++ *
++ * Based on
++ *  mmc-bcm2835.c by Gellert Weisz
++ * which is, in turn, based on
++ *  sdhci-bcm2708.c by Broadcom
++ *  sdhci-bcm2835.c by Stephen Warren and Oleksandr Tymoshenko
++ *  sdhci.c and sdhci-pci.c by Pierre Ossman
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms and conditions of the GNU General Public License,
++ * version 2, as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++ * more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
++ */
++
++#define FIFO_READ_THRESHOLD     4
++#define FIFO_WRITE_THRESHOLD    4
++#define ALLOW_CMD23_READ        1
++#define ALLOW_CMD23_WRITE       0
++#define ENABLE_LOG              1
++#define SDDATA_FIFO_PIO_BURST   8
++#define CMD_DALLY_US            1
++
++#include <linux/delay.h>
++#include <linux/module.h>
++#include <linux/io.h>
++#include <linux/mmc/mmc.h>
++#include <linux/mmc/host.h>
++#include <linux/mmc/sd.h>
++#include <linux/mmc/sdio.h>
++#include <linux/scatterlist.h>
++#include <linux/of_address.h>
++#include <linux/of_irq.h>
++#include <linux/clk.h>
++#include <linux/platform_device.h>
++#include <linux/err.h>
++#include <linux/blkdev.h>
++#include <linux/dmaengine.h>
++#include <linux/dma-mapping.h>
++#include <linux/of_dma.h>
++#include <linux/time.h>
++#include <linux/workqueue.h>
++#include <linux/interrupt.h>
++#include <linux/highmem.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++/* For mmc_card_blockaddr */
++#include "../core/card.h"
++
++#define DRIVER_NAME "sdhost-bcm2835"
++
++#define SDCMD  0x00 /* Command to SD card              - 16 R/W */
++#define SDARG  0x04 /* Argument to SD card             - 32 R/W */
++#define SDTOUT 0x08 /* Start value for timeout counter - 32 R/W */
++#define SDCDIV 0x0c /* Start value for clock divider   - 11 R/W */
++#define SDRSP0 0x10 /* SD card response (31:0)         - 32 R   */
++#define SDRSP1 0x14 /* SD card response (63:32)        - 32 R   */
++#define SDRSP2 0x18 /* SD card response (95:64)        - 32 R   */
++#define SDRSP3 0x1c /* SD card response (127:96)       - 32 R   */
++#define SDHSTS 0x20 /* SD host status                  - 11 R   */
++#define SDVDD  0x30 /* SD card power control           -  1 R/W */
++#define SDEDM  0x34 /* Emergency Debug Mode            - 13 R/W */
++#define SDHCFG 0x38 /* Host configuration              -  2 R/W */
++#define SDHBCT 0x3c /* Host byte count (debug)         - 32 R/W */
++#define SDDATA 0x40 /* Data to/from SD card            - 32 R/W */
++#define SDHBLC 0x50 /* Host block count (SDIO/SDHC)    -  9 R/W */
++
++#define SDCMD_NEW_FLAG                  0x8000
++#define SDCMD_FAIL_FLAG                 0x4000
++#define SDCMD_BUSYWAIT                  0x800
++#define SDCMD_NO_RESPONSE               0x400
++#define SDCMD_LONG_RESPONSE             0x200
++#define SDCMD_WRITE_CMD                 0x80
++#define SDCMD_READ_CMD                  0x40
++#define SDCMD_CMD_MASK                  0x3f
++
++#define SDCDIV_MAX_CDIV                 0x7ff
++
++#define SDHSTS_BUSY_IRPT                0x400
++#define SDHSTS_BLOCK_IRPT               0x200
++#define SDHSTS_SDIO_IRPT                0x100
++#define SDHSTS_REW_TIME_OUT             0x80
++#define SDHSTS_CMD_TIME_OUT             0x40
++#define SDHSTS_CRC16_ERROR              0x20
++#define SDHSTS_CRC7_ERROR               0x10
++#define SDHSTS_FIFO_ERROR               0x08
++/* Reserved */
++/* Reserved */
++#define SDHSTS_DATA_FLAG                0x01
++
++#define SDHSTS_TRANSFER_ERROR_MASK      (SDHSTS_CRC7_ERROR|SDHSTS_CRC16_ERROR|SDHSTS_REW_TIME_OUT|SDHSTS_FIFO_ERROR)
++#define SDHSTS_ERROR_MASK               (SDHSTS_CMD_TIME_OUT|SDHSTS_TRANSFER_ERROR_MASK)
++
++#define SDHCFG_BUSY_IRPT_EN     (1<<10)
++#define SDHCFG_BLOCK_IRPT_EN    (1<<8)
++#define SDHCFG_SDIO_IRPT_EN     (1<<5)
++#define SDHCFG_DATA_IRPT_EN     (1<<4)
++#define SDHCFG_SLOW_CARD        (1<<3)
++#define SDHCFG_WIDE_EXT_BUS     (1<<2)
++#define SDHCFG_WIDE_INT_BUS     (1<<1)
++#define SDHCFG_REL_CMD_LINE     (1<<0)
++
++#define SDEDM_FORCE_DATA_MODE   (1<<19)
++#define SDEDM_CLOCK_PULSE       (1<<20)
++#define SDEDM_BYPASS            (1<<21)
++
++#define SDEDM_WRITE_THRESHOLD_SHIFT 9
++#define SDEDM_READ_THRESHOLD_SHIFT 14
++#define SDEDM_THRESHOLD_MASK     0x1f
++
++#define SDEDM_FSM_MASK           0xf
++#define SDEDM_FSM_IDENTMODE      0x0
++#define SDEDM_FSM_DATAMODE       0x1
++#define SDEDM_FSM_READDATA       0x2
++#define SDEDM_FSM_WRITEDATA      0x3
++#define SDEDM_FSM_READWAIT       0x4
++#define SDEDM_FSM_READCRC        0x5
++#define SDEDM_FSM_WRITECRC       0x6
++#define SDEDM_FSM_WRITEWAIT1     0x7
++#define SDEDM_FSM_POWERDOWN      0x8
++#define SDEDM_FSM_POWERUP        0x9
++#define SDEDM_FSM_WRITESTART1    0xa
++#define SDEDM_FSM_WRITESTART2    0xb
++#define SDEDM_FSM_GENPULSES      0xc
++#define SDEDM_FSM_WRITEWAIT2     0xd
++#define SDEDM_FSM_STARTPOWDOWN   0xf
++
++#define SDDATA_FIFO_WORDS        16
++
++#define USE_CMD23_FLAGS          ((ALLOW_CMD23_READ * MMC_DATA_READ) | \
++				  (ALLOW_CMD23_WRITE * MMC_DATA_WRITE))
++
++#define MHZ 1000000
++
++
++struct bcm2835_host {
++	spinlock_t		lock;
++
++	struct rpi_firmware	*fw;
++
++	void __iomem		*ioaddr;
++	phys_addr_t		bus_addr;
++
++	struct mmc_host		*mmc;
++
++	u32			pio_timeout;	/* In jiffies */
++
++	int			clock;		/* Current clock speed */
++
++	bool			slow_card;	/* Force 11-bit divisor */
++
++	unsigned int		max_clk;	/* Max possible freq */
++
++	struct tasklet_struct	finish_tasklet;	/* Tasklet structures */
++
++	struct work_struct	cmd_wait_wq;	/* Workqueue function */
++
++	struct timer_list	timer;		/* Timer for timeouts */
++
++	struct sg_mapping_iter	sg_miter;	/* SG state for PIO */
++	unsigned int		blocks;		/* remaining PIO blocks */
++
++	int			irq;		/* Device IRQ */
++
++	u32			cmd_quick_poll_retries;
++	u32			ns_per_fifo_word;
++
++	/* cached registers */
++	u32			hcfg;
++	u32			cdiv;
++
++	struct mmc_request		*mrq;			/* Current request */
++	struct mmc_command		*cmd;			/* Current command */
++	struct mmc_data			*data;			/* Current data request */
++	unsigned int			data_complete:1;	/* Data finished before cmd */
++
++	unsigned int			flush_fifo:1;		/* Drain the fifo when finishing */
++
++	unsigned int			use_busy:1;		/* Wait for busy interrupt */
++
++	unsigned int			use_sbc:1;		/* Send CMD23 */
++
++	unsigned int			debug:1;		/* Enable debug output */
++	unsigned int			firmware_sets_cdiv:1;	/* Let the firmware manage the clock */
++	unsigned int			reset_clock:1;		/* Reset the clock fore the next request */
++
++	/*DMA part*/
++	struct dma_chan			*dma_chan_rxtx;		/* DMA channel for reads and writes */
++	struct dma_chan			*dma_chan;		/* Channel in use */
++	struct dma_slave_config		dma_cfg_rx;
++	struct dma_slave_config		dma_cfg_tx;
++	struct dma_async_tx_descriptor	*dma_desc;
++	u32				dma_dir;
++	u32				drain_words;
++	struct page 			*drain_page;
++	u32				drain_offset;
++
++	bool				allow_dma;
++	bool				use_dma;
++	/*end of DMA part*/
++
++	int				max_delay;	/* maximum length of time spent waiting */
++	struct timespec64		stop_time;	/* when the last stop was issued */
++	u32				delay_after_stop; /* minimum time between stop and subsequent data transfer */
++	u32				delay_after_this_stop; /* minimum time between this stop and subsequent data transfer */
++	u32				user_overclock_50; /* User's preferred frequency to use when 50MHz is requested (in MHz) */
++	u32				overclock_50;	/* frequency to use when 50MHz is requested (in MHz) */
++	u32				overclock;	/* Current frequency if overclocked, else zero */
++	u32				pio_limit;	/* Maximum block count for PIO (0 = always DMA) */
++
++	u32				sectors;	/* Cached card size in sectors */
++};
++
++#if ENABLE_LOG
++
++struct log_entry_struct {
++	char event[4];
++	u32 timestamp;
++	u32 param1;
++	u32 param2;
++};
++
++typedef struct log_entry_struct LOG_ENTRY_T;
++
++LOG_ENTRY_T *sdhost_log_buf;
++dma_addr_t sdhost_log_addr;
++static u32 sdhost_log_idx;
++static spinlock_t log_lock;
++static void __iomem *timer_base;
++
++#define LOG_ENTRIES (256*1)
++#define LOG_SIZE (sizeof(LOG_ENTRY_T)*LOG_ENTRIES)
++
++static void log_init(struct device *dev, u32 bus_to_phys)
++{
++	spin_lock_init(&log_lock);
++	sdhost_log_buf = dma_alloc_coherent(dev, LOG_SIZE, &sdhost_log_addr,
++					     GFP_KERNEL);
++	if (sdhost_log_buf) {
++		pr_info("sdhost: log_buf @ %p (%llx)\n",
++			sdhost_log_buf, (u64)sdhost_log_addr);
++		timer_base = ioremap(bus_to_phys + 0x7e003000, SZ_4K);
++		if (!timer_base)
++			pr_err("sdhost: failed to remap timer\n");
++	}
++	else
++		pr_err("sdhost: failed to allocate log buf\n");
++}
++
++static void log_event_impl(const char *event, u32 param1, u32 param2)
++{
++	if (sdhost_log_buf) {
++		LOG_ENTRY_T *entry;
++		unsigned long flags;
++
++		spin_lock_irqsave(&log_lock, flags);
++
++		entry = sdhost_log_buf + sdhost_log_idx;
++		memcpy(entry->event, event, 4);
++		entry->timestamp = (readl(timer_base + 4) & 0x3fffffff) +
++			(smp_processor_id()<<30);
++		entry->param1 = param1;
++		entry->param2 = param2;
++		sdhost_log_idx = (sdhost_log_idx + 1) % LOG_ENTRIES;
++
++		spin_unlock_irqrestore(&log_lock, flags);
++	}
++}
++
++static void log_dump(void)
++{
++	if (sdhost_log_buf) {
++		LOG_ENTRY_T *entry;
++		unsigned long flags;
++		int idx;
++
++		spin_lock_irqsave(&log_lock, flags);
++
++		idx = sdhost_log_idx;
++		do {
++			entry = sdhost_log_buf + idx;
++			if (entry->event[0] != '\0')
++				pr_info("[%08x] %.4s %x %x\n",
++				       entry->timestamp,
++				       entry->event,
++				       entry->param1,
++				       entry->param2);
++			idx = (idx + 1) % LOG_ENTRIES;
++		} while (idx != sdhost_log_idx);
++
++		spin_unlock_irqrestore(&log_lock, flags);
++	}
++}
++
++#define log_event(event, param1, param2) log_event_impl(event, (u32)(uintptr_t)param1, (u32)(uintptr_t)param2)
++
++#else
++
++#define log_init(x) (void)0
++#define log_event(event, param1, param2) (void)0
++#define log_dump() (void)0
++
++#endif
++
++static inline void bcm2835_sdhost_write(struct bcm2835_host *host, u32 val, int reg)
++{
++	writel(val, host->ioaddr + reg);
++}
++
++static inline u32 bcm2835_sdhost_read(struct bcm2835_host *host, int reg)
++{
++	return readl(host->ioaddr + reg);
++}
++
++static inline u32 bcm2835_sdhost_read_relaxed(struct bcm2835_host *host, int reg)
++{
++	return readl_relaxed(host->ioaddr + reg);
++}
++
++static void bcm2835_sdhost_dumpcmd(struct bcm2835_host *host,
++				   struct mmc_command *cmd,
++				   const char *label)
++{
++	if (cmd)
++		pr_info("%s:%c%s op %d arg 0x%x flags 0x%x - resp %08x %08x %08x %08x, err %d\n",
++			mmc_hostname(host->mmc),
++			(cmd == host->cmd) ? '>' : ' ',
++			label, cmd->opcode, cmd->arg, cmd->flags,
++			cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3],
++			cmd->error);
++}
++
++static void bcm2835_sdhost_dumpregs(struct bcm2835_host *host)
++{
++	if (host->mrq)
++	{
++		bcm2835_sdhost_dumpcmd(host, host->mrq->sbc, "sbc");
++		bcm2835_sdhost_dumpcmd(host, host->mrq->cmd, "cmd");
++		if (host->mrq->data)
++			pr_info("%s: data blocks %x blksz %x - err %d\n",
++			       mmc_hostname(host->mmc),
++			       host->mrq->data->blocks,
++			       host->mrq->data->blksz,
++			       host->mrq->data->error);
++		bcm2835_sdhost_dumpcmd(host, host->mrq->stop, "stop");
++	}
++
++	pr_info("%s: =========== REGISTER DUMP ===========\n",
++		mmc_hostname(host->mmc));
++
++	pr_info("%s: SDCMD  0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDCMD));
++	pr_info("%s: SDARG  0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDARG));
++	pr_info("%s: SDTOUT 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDTOUT));
++	pr_info("%s: SDCDIV 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDCDIV));
++	pr_info("%s: SDRSP0 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDRSP0));
++	pr_info("%s: SDRSP1 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDRSP1));
++	pr_info("%s: SDRSP2 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDRSP2));
++	pr_info("%s: SDRSP3 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDRSP3));
++	pr_info("%s: SDHSTS 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDHSTS));
++	pr_info("%s: SDVDD  0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDVDD));
++	pr_info("%s: SDEDM  0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDEDM));
++	pr_info("%s: SDHCFG 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDHCFG));
++	pr_info("%s: SDHBCT 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDHBCT));
++	pr_info("%s: SDHBLC 0x%08x\n",
++		mmc_hostname(host->mmc),
++		bcm2835_sdhost_read(host, SDHBLC));
++
++	pr_info("%s: ===========================================\n",
++		mmc_hostname(host->mmc));
++}
++
++static void bcm2835_sdhost_set_power(struct bcm2835_host *host, bool on)
++{
++	bcm2835_sdhost_write(host, on ? 1 : 0, SDVDD);
++}
++
++static void bcm2835_sdhost_reset_internal(struct bcm2835_host *host)
++{
++	u32 temp;
++
++	if (host->debug)
++		pr_info("%s: reset\n", mmc_hostname(host->mmc));
++
++	bcm2835_sdhost_set_power(host, false);
++
++	bcm2835_sdhost_write(host, 0, SDCMD);
++	bcm2835_sdhost_write(host, 0, SDARG);
++	bcm2835_sdhost_write(host, 0xf00000, SDTOUT);
++	bcm2835_sdhost_write(host, 0, SDCDIV);
++	bcm2835_sdhost_write(host, 0x7f8, SDHSTS); /* Write 1s to clear */
++	bcm2835_sdhost_write(host, 0, SDHCFG);
++	bcm2835_sdhost_write(host, 0, SDHBCT);
++	bcm2835_sdhost_write(host, 0, SDHBLC);
++
++	/* Limit fifo usage due to silicon bug */
++	temp = bcm2835_sdhost_read(host, SDEDM);
++	temp &= ~((SDEDM_THRESHOLD_MASK<<SDEDM_READ_THRESHOLD_SHIFT) |
++		  (SDEDM_THRESHOLD_MASK<<SDEDM_WRITE_THRESHOLD_SHIFT));
++	temp |= (FIFO_READ_THRESHOLD << SDEDM_READ_THRESHOLD_SHIFT) |
++		(FIFO_WRITE_THRESHOLD << SDEDM_WRITE_THRESHOLD_SHIFT);
++	bcm2835_sdhost_write(host, temp, SDEDM);
++	mdelay(10);
++	bcm2835_sdhost_set_power(host, true);
++	mdelay(10);
++	host->clock = 0;
++	host->sectors = 0;
++	bcm2835_sdhost_write(host, host->hcfg, SDHCFG);
++	bcm2835_sdhost_write(host, SDCDIV_MAX_CDIV, SDCDIV);
++}
++
++static void bcm2835_sdhost_reset(struct mmc_host *mmc)
++{
++	struct bcm2835_host *host = mmc_priv(mmc);
++	unsigned long flags;
++	spin_lock_irqsave(&host->lock, flags);
++	log_event("RST<", 0, 0);
++
++	bcm2835_sdhost_reset_internal(host);
++
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_sdhost_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
++
++static void bcm2835_sdhost_init(struct bcm2835_host *host, int soft)
++{
++	pr_debug("bcm2835_sdhost_init(%d)\n", soft);
++
++	/* Set interrupt enables */
++	host->hcfg = SDHCFG_BUSY_IRPT_EN;
++
++	bcm2835_sdhost_reset_internal(host);
++
++	if (soft) {
++		/* force clock reconfiguration */
++		host->clock = 0;
++		bcm2835_sdhost_set_ios(host->mmc, &host->mmc->ios);
++	}
++}
++
++static void bcm2835_sdhost_wait_transfer_complete(struct bcm2835_host *host)
++{
++	int timediff;
++	u32 alternate_idle;
++	u32 edm;
++
++	alternate_idle = (host->mrq->data->flags & MMC_DATA_READ) ?
++		SDEDM_FSM_READWAIT : SDEDM_FSM_WRITESTART1;
++
++	edm = bcm2835_sdhost_read(host, SDEDM);
++
++	log_event("WTC<", edm, 0);
++
++	timediff = 0;
++
++	while (1) {
++		u32 fsm = edm & SDEDM_FSM_MASK;
++		if ((fsm == SDEDM_FSM_IDENTMODE) ||
++		    (fsm == SDEDM_FSM_DATAMODE))
++			break;
++		if (fsm == alternate_idle) {
++			bcm2835_sdhost_write(host,
++					     edm | SDEDM_FORCE_DATA_MODE,
++					     SDEDM);
++			break;
++		}
++
++		timediff++;
++		if (timediff == 100000) {
++			pr_err("%s: wait_transfer_complete - still waiting after %d retries\n",
++			       mmc_hostname(host->mmc),
++			       timediff);
++			log_dump();
++			bcm2835_sdhost_dumpregs(host);
++			host->mrq->data->error = -ETIMEDOUT;
++			log_event("WTC!", edm, 0);
++			return;
++		}
++		cpu_relax();
++		edm = bcm2835_sdhost_read(host, SDEDM);
++	}
++	log_event("WTC>", edm, 0);
++}
++
++static void bcm2835_sdhost_finish_data(struct bcm2835_host *host);
++
++static void bcm2835_sdhost_dma_complete(void *param)
++{
++	struct bcm2835_host *host = param;
++	struct mmc_data *data = host->data;
++	unsigned long flags;
++
++	spin_lock_irqsave(&host->lock, flags);
++	log_event("DMA<", host->data, bcm2835_sdhost_read(host, SDHSTS));
++	log_event("DMA ", bcm2835_sdhost_read(host, SDCMD),
++		  bcm2835_sdhost_read(host, SDEDM));
++
++	if (host->dma_chan) {
++		dma_unmap_sg(host->dma_chan->device->dev,
++			     data->sg, data->sg_len,
++			     host->dma_dir);
++
++		host->dma_chan = NULL;
++	}
++
++	if (host->drain_words) {
++		void *page;
++		u32 *buf;
++
++		if (host->drain_offset & PAGE_MASK) {
++			host->drain_page += host->drain_offset >> PAGE_SHIFT;
++			host->drain_offset &= ~PAGE_MASK;
++		}
++
++		page = kmap_atomic(host->drain_page);
++		buf = page + host->drain_offset;
++
++		while (host->drain_words) {
++			u32 edm = bcm2835_sdhost_read(host, SDEDM);
++			if ((edm >> 4) & 0x1f)
++				*(buf++) = bcm2835_sdhost_read(host,
++							       SDDATA);
++			host->drain_words--;
++		}
++
++		kunmap_atomic(page);
++	}
++
++	bcm2835_sdhost_finish_data(host);
++
++	log_event("DMA>", host->data, 0);
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_sdhost_read_block_pio(struct bcm2835_host *host)
++{
++	unsigned long flags;
++	size_t blksize, len;
++	u32 *buf;
++	unsigned long wait_max;
++
++	blksize = host->data->blksz;
++
++	wait_max = jiffies + msecs_to_jiffies(host->pio_timeout);
++
++	local_irq_save(flags);
++
++	while (blksize) {
++		int copy_words;
++		u32 hsts = 0;
++
++		if (!sg_miter_next(&host->sg_miter)) {
++			host->data->error = -EINVAL;
++			break;
++		}
++
++		len = min(host->sg_miter.length, blksize);
++		if (len % 4) {
++			host->data->error = -EINVAL;
++			break;
++		}
++
++		blksize -= len;
++		host->sg_miter.consumed = len;
++
++		buf = (u32 *)host->sg_miter.addr;
++
++		copy_words = len/4;
++
++		while (copy_words) {
++			int burst_words, words;
++			u32 edm;
++
++			burst_words = SDDATA_FIFO_PIO_BURST;
++			if (burst_words > copy_words)
++				burst_words = copy_words;
++			edm = bcm2835_sdhost_read(host, SDEDM);
++			words = ((edm >> 4) & 0x1f);
++
++			if (words < burst_words) {
++				int fsm_state = (edm & SDEDM_FSM_MASK);
++				if ((fsm_state != SDEDM_FSM_READDATA) &&
++				    (fsm_state != SDEDM_FSM_READWAIT) &&
++				    (fsm_state != SDEDM_FSM_READCRC)) {
++					hsts = bcm2835_sdhost_read(host,
++								   SDHSTS);
++					pr_info("%s: fsm %x, hsts %x\n",
++					       mmc_hostname(host->mmc),
++					       fsm_state, hsts);
++					if (hsts & SDHSTS_ERROR_MASK)
++						break;
++				}
++
++				if (time_after(jiffies, wait_max)) {
++					pr_err("%s: PIO read timeout - EDM %x\n",
++					       mmc_hostname(host->mmc),
++					       edm);
++					hsts = SDHSTS_REW_TIME_OUT;
++					break;
++				}
++				ndelay((burst_words - words) *
++				       host->ns_per_fifo_word);
++				continue;
++			} else if (words > copy_words) {
++				words = copy_words;
++			}
++
++			copy_words -= words;
++
++			while (words) {
++				*(buf++) = bcm2835_sdhost_read(host, SDDATA);
++				words--;
++			}
++		}
++
++		if (hsts & SDHSTS_ERROR_MASK)
++			break;
++	}
++
++	sg_miter_stop(&host->sg_miter);
++
++	local_irq_restore(flags);
++}
++
++static void bcm2835_sdhost_write_block_pio(struct bcm2835_host *host)
++{
++	unsigned long flags;
++	size_t blksize, len;
++	u32 *buf;
++	unsigned long wait_max;
++
++	blksize = host->data->blksz;
++
++	wait_max = jiffies + msecs_to_jiffies(host->pio_timeout);
++
++	local_irq_save(flags);
++
++	while (blksize) {
++		int copy_words;
++		u32 hsts = 0;
++
++		if (!sg_miter_next(&host->sg_miter)) {
++			host->data->error = -EINVAL;
++			break;
++		}
++
++		len = min(host->sg_miter.length, blksize);
++		if (len % 4) {
++			host->data->error = -EINVAL;
++			break;
++		}
++
++		blksize -= len;
++		host->sg_miter.consumed = len;
++
++		buf = (u32 *)host->sg_miter.addr;
++
++		copy_words = len/4;
++
++		while (copy_words) {
++			int burst_words, words;
++			u32 edm;
++
++			burst_words = SDDATA_FIFO_PIO_BURST;
++			if (burst_words > copy_words)
++				burst_words = copy_words;
++			edm = bcm2835_sdhost_read(host, SDEDM);
++			words = SDDATA_FIFO_WORDS - ((edm >> 4) & 0x1f);
++
++			if (words < burst_words) {
++				int fsm_state = (edm & SDEDM_FSM_MASK);
++				if ((fsm_state != SDEDM_FSM_WRITEDATA) &&
++				    (fsm_state != SDEDM_FSM_WRITESTART1) &&
++				    (fsm_state != SDEDM_FSM_WRITESTART2)) {
++					hsts = bcm2835_sdhost_read(host,
++								   SDHSTS);
++					pr_info("%s: fsm %x, hsts %x\n",
++					       mmc_hostname(host->mmc),
++					       fsm_state, hsts);
++					if (hsts & SDHSTS_ERROR_MASK)
++						break;
++				}
++
++				if (time_after(jiffies, wait_max)) {
++					pr_err("%s: PIO write timeout - EDM %x\n",
++					       mmc_hostname(host->mmc),
++					       edm);
++					hsts = SDHSTS_REW_TIME_OUT;
++					break;
++				}
++				ndelay((burst_words - words) *
++				       host->ns_per_fifo_word);
++				continue;
++			} else if (words > copy_words) {
++				words = copy_words;
++			}
++
++			copy_words -= words;
++
++			while (words) {
++				bcm2835_sdhost_write(host, *(buf++), SDDATA);
++				words--;
++			}
++		}
++
++		if (hsts & SDHSTS_ERROR_MASK)
++			break;
++	}
++
++	sg_miter_stop(&host->sg_miter);
++
++	local_irq_restore(flags);
++}
++
++static void bcm2835_sdhost_transfer_pio(struct bcm2835_host *host)
++{
++	u32 sdhsts;
++	bool is_read;
++	BUG_ON(!host->data);
++	log_event("XFP<", host->data, host->blocks);
++
++	is_read = (host->data->flags & MMC_DATA_READ) != 0;
++	if (is_read)
++		bcm2835_sdhost_read_block_pio(host);
++	else
++		bcm2835_sdhost_write_block_pio(host);
++
++	sdhsts = bcm2835_sdhost_read(host, SDHSTS);
++	if (sdhsts & (SDHSTS_CRC16_ERROR |
++		      SDHSTS_CRC7_ERROR |
++		      SDHSTS_FIFO_ERROR)) {
++		pr_err("%s: %s transfer error - HSTS %x\n",
++		       mmc_hostname(host->mmc),
++		       is_read ? "read" : "write",
++		       sdhsts);
++		host->data->error = -EILSEQ;
++	} else if ((sdhsts & (SDHSTS_CMD_TIME_OUT |
++			      SDHSTS_REW_TIME_OUT))) {
++		pr_err("%s: %s timeout error - HSTS %x\n",
++		       mmc_hostname(host->mmc),
++		       is_read ? "read" : "write",
++		       sdhsts);
++		host->data->error = -ETIMEDOUT;
++	}
++	log_event("XFP>", host->data, host->blocks);
++}
++
++static void bcm2835_sdhost_prepare_dma(struct bcm2835_host *host,
++	struct mmc_data *data)
++{
++	int len, dir_data, dir_slave;
++	struct dma_async_tx_descriptor *desc = NULL;
++	struct dma_chan *dma_chan;
++
++	log_event("PRD<", data, 0);
++	pr_debug("bcm2835_sdhost_prepare_dma()\n");
++
++	dma_chan = host->dma_chan_rxtx;
++	if (data->flags & MMC_DATA_READ) {
++		dir_data = DMA_FROM_DEVICE;
++		dir_slave = DMA_DEV_TO_MEM;
++	} else {
++		dir_data = DMA_TO_DEVICE;
++		dir_slave = DMA_MEM_TO_DEV;
++	}
++	log_event("PRD1", dma_chan, 0);
++
++	BUG_ON(!dma_chan->device);
++	BUG_ON(!dma_chan->device->dev);
++	BUG_ON(!data->sg);
++
++	/* The block doesn't manage the FIFO DREQs properly for multi-block
++	   transfers, so don't attempt to DMA the final few words.
++	   Unfortunately this requires the final sg entry to be trimmed.
++	   N.B. This code demands that the overspill is contained in
++	   a single sg entry.
++	*/
++
++	host->drain_words = 0;
++	if ((data->blocks > 1) && (dir_data == DMA_FROM_DEVICE)) {
++		struct scatterlist *sg;
++		u32 len;
++		int i;
++
++		len = min((u32)(FIFO_READ_THRESHOLD - 1) * 4,
++			  (u32)data->blocks * data->blksz);
++
++		for_each_sg(data->sg, sg, data->sg_len, i) {
++			if (sg_is_last(sg)) {
++				BUG_ON(sg->length < len);
++				sg->length -= len;
++				host->drain_page = sg_page(sg);
++				host->drain_offset = sg->offset + sg->length;
++			}
++		}
++		host->drain_words = len/4;
++	}
++
++	/* The parameters have already been validated, so this will not fail */
++	(void)dmaengine_slave_config(dma_chan,
++				     (dir_data == DMA_FROM_DEVICE) ?
++				     &host->dma_cfg_rx :
++				     &host->dma_cfg_tx);
++
++	len = dma_map_sg(dma_chan->device->dev, data->sg, data->sg_len,
++			 dir_data);
++
++	log_event("PRD2", len, 0);
++	if (len > 0)
++		desc = dmaengine_prep_slave_sg(dma_chan, data->sg,
++					       len, dir_slave,
++					       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
++	log_event("PRD3", desc, 0);
++
++	if (desc) {
++		desc->callback = bcm2835_sdhost_dma_complete;
++		desc->callback_param = host;
++		host->dma_desc = desc;
++		host->dma_chan = dma_chan;
++		host->dma_dir = dir_data;
++	}
++	log_event("PDM>", data, 0);
++}
++
++static void bcm2835_sdhost_start_dma(struct bcm2835_host *host)
++{
++	log_event("SDMA", host->data, host->dma_chan);
++	dmaengine_submit(host->dma_desc);
++	dma_async_issue_pending(host->dma_chan);
++}
++
++static void bcm2835_sdhost_set_transfer_irqs(struct bcm2835_host *host)
++{
++	u32 all_irqs = SDHCFG_DATA_IRPT_EN | SDHCFG_BLOCK_IRPT_EN |
++		SDHCFG_BUSY_IRPT_EN;
++	if (host->dma_desc)
++		host->hcfg = (host->hcfg & ~all_irqs) |
++			SDHCFG_BUSY_IRPT_EN;
++	else
++		host->hcfg = (host->hcfg & ~all_irqs) |
++			SDHCFG_DATA_IRPT_EN |
++			SDHCFG_BUSY_IRPT_EN;
++
++	bcm2835_sdhost_write(host, host->hcfg, SDHCFG);
++}
++
++static void bcm2835_sdhost_prepare_data(struct bcm2835_host *host, struct mmc_command *cmd)
++{
++	struct mmc_data *data = cmd->data;
++
++	WARN_ON(host->data);
++
++	host->data = data;
++	if (!data)
++		return;
++
++	/* Sanity checks */
++	BUG_ON(data->blksz * data->blocks > 524288);
++	BUG_ON(data->blksz > host->mmc->max_blk_size);
++	BUG_ON(data->blocks > 65535);
++
++	host->data_complete = 0;
++	host->flush_fifo = 0;
++	host->data->bytes_xfered = 0;
++
++	if (!host->sectors && host->mmc->card) {
++		struct mmc_card *card = host->mmc->card;
++		if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) {
++			/*
++			 * The EXT_CSD sector count is in number of 512 byte
++			 * sectors.
++			 */
++			host->sectors = card->ext_csd.sectors;
++		} else {
++			/*
++			 * The CSD capacity field is in units of read_blkbits.
++			 * set_capacity takes units of 512 bytes.
++			 */
++			host->sectors = card->csd.capacity <<
++				(card->csd.read_blkbits - 9);
++		}
++	}
++
++	if (!host->dma_desc) {
++		/* Use PIO */
++		int flags = SG_MITER_ATOMIC;
++
++		if (data->flags & MMC_DATA_READ)
++			flags |= SG_MITER_TO_SG;
++		else
++			flags |= SG_MITER_FROM_SG;
++		sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
++		host->blocks = data->blocks;
++	}
++
++	bcm2835_sdhost_set_transfer_irqs(host);
++
++	bcm2835_sdhost_write(host, data->blksz, SDHBCT);
++	bcm2835_sdhost_write(host, data->blocks, SDHBLC);
++
++	BUG_ON(!host->data);
++}
++
++bool bcm2835_sdhost_send_command(struct bcm2835_host *host,
++				 struct mmc_command *cmd)
++{
++	u32 sdcmd, sdhsts;
++	unsigned long timeout;
++	int delay;
++
++	WARN_ON(host->cmd);
++	log_event("CMD<", cmd->opcode, cmd->arg);
++
++	if (cmd->data)
++		pr_debug("%s: send_command %d 0x%x "
++			 "(flags 0x%x) - %s %d*%d\n",
++			 mmc_hostname(host->mmc),
++			 cmd->opcode, cmd->arg, cmd->flags,
++			 (cmd->data->flags & MMC_DATA_READ) ?
++			 "read" : "write", cmd->data->blocks,
++			 cmd->data->blksz);
++	else
++		pr_debug("%s: send_command %d 0x%x (flags 0x%x)\n",
++			 mmc_hostname(host->mmc),
++			 cmd->opcode, cmd->arg, cmd->flags);
++
++	/* Wait max 100 ms */
++	timeout = 10000;
++
++	while (bcm2835_sdhost_read(host, SDCMD) & SDCMD_NEW_FLAG) {
++		if (timeout == 0) {
++			pr_warn("%s: previous command never completed.\n",
++				mmc_hostname(host->mmc));
++			if (host->debug)
++				bcm2835_sdhost_dumpregs(host);
++			cmd->error = -EILSEQ;
++			tasklet_schedule(&host->finish_tasklet);
++			return false;
++		}
++		timeout--;
++		udelay(10);
++	}
++
++	delay = (10000 - timeout)/100;
++	if (delay > host->max_delay) {
++		host->max_delay = delay;
++		pr_warn("%s: controller hung for %d ms\n",
++			   mmc_hostname(host->mmc),
++			   host->max_delay);
++	}
++
++	timeout = jiffies;
++	if (!cmd->data && cmd->busy_timeout > 9000)
++		timeout += DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ;
++	else
++		timeout += 10 * HZ;
++	mod_timer(&host->timer, timeout);
++
++	host->cmd = cmd;
++
++	/* Clear any error flags */
++	sdhsts = bcm2835_sdhost_read(host, SDHSTS);
++	if (sdhsts & SDHSTS_ERROR_MASK)
++		bcm2835_sdhost_write(host, sdhsts, SDHSTS);
++
++	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
++		pr_err("%s: unsupported response type!\n",
++			mmc_hostname(host->mmc));
++		cmd->error = -EINVAL;
++		tasklet_schedule(&host->finish_tasklet);
++		return false;
++	}
++
++	bcm2835_sdhost_prepare_data(host, cmd);
++
++	bcm2835_sdhost_write(host, cmd->arg, SDARG);
++
++	sdcmd = cmd->opcode & SDCMD_CMD_MASK;
++
++	host->use_busy = 0;
++	if (!(cmd->flags & MMC_RSP_PRESENT)) {
++		sdcmd |= SDCMD_NO_RESPONSE;
++	} else {
++		if (cmd->flags & MMC_RSP_136)
++			sdcmd |= SDCMD_LONG_RESPONSE;
++		if (cmd->flags & MMC_RSP_BUSY) {
++			sdcmd |= SDCMD_BUSYWAIT;
++			host->use_busy = 1;
++		}
++	}
++
++	if (cmd->data) {
++		log_event("CMDD", cmd->data->blocks, cmd->data->blksz);
++		if (host->delay_after_this_stop) {
++			struct timespec64 now;
++			int time_since_stop;
++
++			ktime_get_real_ts64(&now);
++			time_since_stop = now.tv_sec - host->stop_time.tv_sec;
++			if (time_since_stop < 2) {
++				/* Possibly less than one second */
++				time_since_stop = time_since_stop * 1000000 +
++					(now.tv_nsec - host->stop_time.tv_nsec)/1000;
++				if (time_since_stop <
++				    host->delay_after_this_stop)
++					udelay(host->delay_after_this_stop -
++					       time_since_stop);
++			}
++		}
++
++		host->delay_after_this_stop = host->delay_after_stop;
++		if ((cmd->data->flags & MMC_DATA_READ) && !host->use_sbc) {
++			/* See if read crosses one of the hazardous sectors */
++			u32 first_blk, last_blk;
++
++			/* Intentionally include the following sector because
++			   without CMD23/SBC the read may run on. */
++			first_blk = host->mrq->cmd->arg;
++			last_blk = first_blk + cmd->data->blocks;
++
++			if (((last_blk >= (host->sectors - 64)) &&
++			     (first_blk <= (host->sectors - 64))) ||
++			    ((last_blk >= (host->sectors - 32)) &&
++			     (first_blk <= (host->sectors - 32)))) {
++				host->delay_after_this_stop =
++					max(250u, host->delay_after_stop);
++			}
++		}
++
++		if (cmd->data->flags & MMC_DATA_WRITE)
++			sdcmd |= SDCMD_WRITE_CMD;
++		if (cmd->data->flags & MMC_DATA_READ)
++			sdcmd |= SDCMD_READ_CMD;
++	}
++
++	bcm2835_sdhost_write(host, sdcmd | SDCMD_NEW_FLAG, SDCMD);
++
++	return true;
++}
++
++static void bcm2835_sdhost_finish_command(struct bcm2835_host *host,
++					  unsigned long *irq_flags);
++static void bcm2835_sdhost_transfer_complete(struct bcm2835_host *host);
++
++static void bcm2835_sdhost_finish_data(struct bcm2835_host *host)
++{
++	struct mmc_data *data;
++
++	data = host->data;
++	BUG_ON(!data);
++
++	log_event("FDA<", host->mrq, host->cmd);
++	pr_debug("finish_data(error %d, stop %d, sbc %d)\n",
++	       data->error, data->stop ? 1 : 0,
++	       host->mrq->sbc ? 1 : 0);
++
++	host->hcfg &= ~(SDHCFG_DATA_IRPT_EN | SDHCFG_BLOCK_IRPT_EN);
++	bcm2835_sdhost_write(host, host->hcfg, SDHCFG);
++
++	data->bytes_xfered = data->error ? 0 : (data->blksz * data->blocks);
++
++	host->data_complete = 1;
++
++	if (host->cmd) {
++		/*
++		 * Data managed to finish before the
++		 * command completed. Make sure we do
++		 * things in the proper order.
++		 */
++		pr_debug("Finished early - HSTS %x\n",
++			 bcm2835_sdhost_read(host, SDHSTS));
++	}
++	else
++		bcm2835_sdhost_transfer_complete(host);
++	log_event("FDA>", host->mrq, host->cmd);
++}
++
++static void bcm2835_sdhost_transfer_complete(struct bcm2835_host *host)
++{
++	struct mmc_data *data;
++
++	BUG_ON(host->cmd);
++	BUG_ON(!host->data);
++	BUG_ON(!host->data_complete);
++
++	data = host->data;
++	host->data = NULL;
++
++	log_event("TCM<", data, data->error);
++	pr_debug("transfer_complete(error %d, stop %d)\n",
++	       data->error, data->stop ? 1 : 0);
++
++	/*
++	 * Need to send CMD12 if -
++	 * a) open-ended multiblock transfer (no CMD23)
++	 * b) error in multiblock transfer
++	 */
++	if (host->mrq->stop && (data->error || !host->use_sbc)) {
++		if (bcm2835_sdhost_send_command(host, host->mrq->stop)) {
++			/* No busy, so poll for completion */
++			if (!host->use_busy)
++				bcm2835_sdhost_finish_command(host, NULL);
++
++			if (host->delay_after_this_stop)
++				ktime_get_real_ts64(&host->stop_time);
++		}
++	} else {
++		bcm2835_sdhost_wait_transfer_complete(host);
++		tasklet_schedule(&host->finish_tasklet);
++	}
++	log_event("TCM>", data, 0);
++}
++
++/* If irq_flags is valid, the caller is in a thread context and is allowed
++   to sleep */
++static void bcm2835_sdhost_finish_command(struct bcm2835_host *host,
++					  unsigned long *irq_flags)
++{
++	u32 sdcmd;
++	u32 retries;
++#ifdef DEBUG
++	struct timespec64 before, after;
++	int timediff = 0;
++#endif
++
++	log_event("FCM<", host->mrq, host->cmd);
++	pr_debug("finish_command(%x)\n", bcm2835_sdhost_read(host, SDCMD));
++
++	BUG_ON(!host->cmd || !host->mrq);
++
++	/* Poll quickly at first */
++
++	retries = host->cmd_quick_poll_retries;
++	if (!retries) {
++		/* Work out how many polls take 1us by timing 10us */
++		struct timespec64 start, now;
++		int us_diff;
++
++		retries = 1;
++		do {
++			int i;
++
++			retries *= 2;
++
++			ktime_get_real_ts64(&start);
++
++			for (i = 0; i < retries; i++) {
++				cpu_relax();
++				sdcmd = bcm2835_sdhost_read(host, SDCMD);
++			}
++
++			ktime_get_real_ts64(&now);
++			us_diff = (now.tv_sec - start.tv_sec) * 1000000 +
++				(now.tv_nsec - start.tv_nsec)/1000;
++		} while (us_diff < 10);
++
++		host->cmd_quick_poll_retries = ((retries * us_diff + 9)*CMD_DALLY_US)/10 + 1;
++		retries = 1; // We've already waited long enough this time
++	}
++
++	for (sdcmd = bcm2835_sdhost_read(host, SDCMD);
++	     (sdcmd & SDCMD_NEW_FLAG) && retries;
++	     retries--) {
++		cpu_relax();
++		sdcmd = bcm2835_sdhost_read(host, SDCMD);
++	}
++
++	if (!retries) {
++		unsigned long wait_max;
++
++		if (!irq_flags) {
++			/* Schedule the work */
++			log_event("CWWQ", 0, 0);
++			schedule_work(&host->cmd_wait_wq);
++			return;
++		}
++
++		/* Wait max 100 ms */
++		wait_max = jiffies + msecs_to_jiffies(100);
++		while (time_before(jiffies, wait_max)) {
++			spin_unlock_irqrestore(&host->lock, *irq_flags);
++			usleep_range(1, 10);
++			spin_lock_irqsave(&host->lock, *irq_flags);
++			sdcmd = bcm2835_sdhost_read(host, SDCMD);
++			if (!(sdcmd & SDCMD_NEW_FLAG))
++				break;
++		}
++	}
++
++	/* Check for errors */
++	if (sdcmd & SDCMD_NEW_FLAG) {
++		if (host->debug) {
++			pr_err("%s: command %d never completed.\n",
++			       mmc_hostname(host->mmc), host->cmd->opcode);
++			bcm2835_sdhost_dumpregs(host);
++		}
++		host->cmd->error = -EILSEQ;
++		tasklet_schedule(&host->finish_tasklet);
++		return;
++	} else if (sdcmd & SDCMD_FAIL_FLAG) {
++		u32 sdhsts = bcm2835_sdhost_read(host, SDHSTS);
++
++		/* Clear the errors */
++		bcm2835_sdhost_write(host, SDHSTS_ERROR_MASK, SDHSTS);
++
++		if (host->debug)
++			pr_info("%s: error detected - CMD %x, HSTS %03x, EDM %x\n",
++				mmc_hostname(host->mmc), sdcmd, sdhsts,
++				bcm2835_sdhost_read(host, SDEDM));
++
++		if ((sdhsts & SDHSTS_CRC7_ERROR) &&
++		    (host->cmd->opcode == 1)) {
++			if (host->debug)
++				pr_info("%s: ignoring CRC7 error for CMD1\n",
++					mmc_hostname(host->mmc));
++		} else {
++			u32 edm, fsm;
++
++			if (sdhsts & SDHSTS_CMD_TIME_OUT) {
++				if (host->debug)
++					pr_warn("%s: command %d timeout\n",
++					       mmc_hostname(host->mmc),
++					       host->cmd->opcode);
++				host->cmd->error = -ETIMEDOUT;
++			} else {
++				pr_warn("%s: unexpected command %d error\n",
++				       mmc_hostname(host->mmc),
++				       host->cmd->opcode);
++				host->cmd->error = -EILSEQ;
++			}
++
++			edm = readl(host->ioaddr + SDEDM);
++			fsm = edm & SDEDM_FSM_MASK;
++			if (fsm == SDEDM_FSM_READWAIT ||
++			    fsm == SDEDM_FSM_WRITESTART1)
++				writel(edm | SDEDM_FORCE_DATA_MODE,
++				       host->ioaddr + SDEDM);
++			tasklet_schedule(&host->finish_tasklet);
++			return;
++		}
++	}
++
++	if (host->cmd->flags & MMC_RSP_PRESENT) {
++		if (host->cmd->flags & MMC_RSP_136) {
++			int i;
++			for (i = 0; i < 4; i++)
++				host->cmd->resp[3 - i] = bcm2835_sdhost_read(host, SDRSP0 + i*4);
++			pr_debug("%s: finish_command %08x %08x %08x %08x\n",
++				 mmc_hostname(host->mmc),
++				 host->cmd->resp[0], host->cmd->resp[1], host->cmd->resp[2], host->cmd->resp[3]);
++			log_event("RSP ", host->cmd->resp[0], host->cmd->resp[1]);
++		} else {
++			host->cmd->resp[0] = bcm2835_sdhost_read(host, SDRSP0);
++			pr_debug("%s: finish_command %08x\n",
++				 mmc_hostname(host->mmc),
++				 host->cmd->resp[0]);
++			log_event("RSP ", host->cmd->resp[0], 0);
++		}
++	}
++
++	if (host->cmd == host->mrq->sbc) {
++		/* Finished CMD23, now send actual command. */
++		host->cmd = NULL;
++		if (bcm2835_sdhost_send_command(host, host->mrq->cmd)) {
++			if (host->data && host->dma_desc)
++				/* DMA transfer starts now, PIO starts after irq */
++				bcm2835_sdhost_start_dma(host);
++
++			if (!host->use_busy)
++				bcm2835_sdhost_finish_command(host, NULL);
++		}
++	} else if (host->cmd == host->mrq->stop) {
++		/* Finished CMD12 */
++		tasklet_schedule(&host->finish_tasklet);
++	} else {
++		/* Processed actual command. */
++		host->cmd = NULL;
++		if (!host->data)
++			tasklet_schedule(&host->finish_tasklet);
++		else if (host->data_complete)
++			bcm2835_sdhost_transfer_complete(host);
++	}
++	log_event("FCM>", host->mrq, host->cmd);
++}
++
++static void bcm2835_sdhost_timeout(struct timer_list *t)
++{
++	struct bcm2835_host *host = from_timer(host, t, timer);
++	unsigned long flags;
++
++	spin_lock_irqsave(&host->lock, flags);
++	log_event("TIM<", 0, 0);
++
++	if (host->mrq) {
++		pr_err("%s: timeout waiting for hardware interrupt.\n",
++			mmc_hostname(host->mmc));
++		log_dump();
++		bcm2835_sdhost_dumpregs(host);
++
++		if (host->data) {
++			host->data->error = -ETIMEDOUT;
++			bcm2835_sdhost_finish_data(host);
++		} else {
++			if (host->cmd)
++				host->cmd->error = -ETIMEDOUT;
++			else
++				host->mrq->cmd->error = -ETIMEDOUT;
++
++			pr_debug("timeout_timer tasklet_schedule\n");
++			tasklet_schedule(&host->finish_tasklet);
++		}
++	}
++
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_sdhost_busy_irq(struct bcm2835_host *host, u32 intmask)
++{
++	log_event("IRQB", host->cmd, intmask);
++	if (!host->cmd) {
++		pr_err("%s: got command busy interrupt 0x%08x even "
++			"though no command operation was in progress.\n",
++			mmc_hostname(host->mmc), (unsigned)intmask);
++		bcm2835_sdhost_dumpregs(host);
++		return;
++	}
++
++	if (!host->use_busy) {
++		pr_err("%s: got command busy interrupt 0x%08x even "
++			"though not expecting one.\n",
++			mmc_hostname(host->mmc), (unsigned)intmask);
++		bcm2835_sdhost_dumpregs(host);
++		return;
++	}
++	host->use_busy = 0;
++
++	if (intmask & SDHSTS_ERROR_MASK)
++	{
++		pr_err("sdhost_busy_irq: intmask %x, data %p\n", intmask, host->mrq->data);
++		if (intmask & SDHSTS_CRC7_ERROR)
++			host->cmd->error = -EILSEQ;
++		else if (intmask & (SDHSTS_CRC16_ERROR |
++				    SDHSTS_FIFO_ERROR)) {
++			if (host->mrq->data)
++				host->mrq->data->error = -EILSEQ;
++			else
++				host->cmd->error = -EILSEQ;
++		} else if (intmask & SDHSTS_REW_TIME_OUT) {
++			if (host->mrq->data)
++				host->mrq->data->error = -ETIMEDOUT;
++			else
++				host->cmd->error = -ETIMEDOUT;
++		} else if (intmask & SDHSTS_CMD_TIME_OUT)
++			host->cmd->error = -ETIMEDOUT;
++
++		if (host->debug) {
++			log_dump();
++			bcm2835_sdhost_dumpregs(host);
++		}
++	}
++	else
++		bcm2835_sdhost_finish_command(host, NULL);
++}
++
++static void bcm2835_sdhost_data_irq(struct bcm2835_host *host, u32 intmask)
++{
++	/* There are no dedicated data/space available interrupt
++	   status bits, so it is necessary to use the single shared
++	   data/space available FIFO status bits. It is therefore not
++	   an error to get here when there is no data transfer in
++	   progress. */
++	log_event("IRQD", host->data, intmask);
++	if (!host->data)
++		return;
++
++	if (intmask & (SDHSTS_CRC16_ERROR |
++		       SDHSTS_FIFO_ERROR |
++		       SDHSTS_REW_TIME_OUT)) {
++		if (intmask & (SDHSTS_CRC16_ERROR |
++			       SDHSTS_FIFO_ERROR))
++			host->data->error = -EILSEQ;
++		else
++			host->data->error = -ETIMEDOUT;
++
++		if (host->debug) {
++			log_dump();
++			bcm2835_sdhost_dumpregs(host);
++		}
++	}
++
++	if (host->data->error) {
++		bcm2835_sdhost_finish_data(host);
++	} else if (host->data->flags & MMC_DATA_WRITE) {
++		/* Use the block interrupt for writes after the first block */
++		host->hcfg &= ~(SDHCFG_DATA_IRPT_EN);
++		host->hcfg |= SDHCFG_BLOCK_IRPT_EN;
++		bcm2835_sdhost_write(host, host->hcfg, SDHCFG);
++		bcm2835_sdhost_transfer_pio(host);
++	} else {
++		bcm2835_sdhost_transfer_pio(host);
++		host->blocks--;
++		if ((host->blocks == 0) || host->data->error)
++			bcm2835_sdhost_finish_data(host);
++	}
++}
++
++static void bcm2835_sdhost_block_irq(struct bcm2835_host *host, u32 intmask)
++{
++	log_event("IRQK", host->data, intmask);
++	if (!host->data) {
++		pr_err("%s: got block interrupt 0x%08x even "
++			"though no data operation was in progress.\n",
++			mmc_hostname(host->mmc), (unsigned)intmask);
++		bcm2835_sdhost_dumpregs(host);
++		return;
++	}
++
++	if (intmask & (SDHSTS_CRC16_ERROR |
++		       SDHSTS_FIFO_ERROR |
++		       SDHSTS_REW_TIME_OUT)) {
++		if (intmask & (SDHSTS_CRC16_ERROR |
++			       SDHSTS_FIFO_ERROR))
++			host->data->error = -EILSEQ;
++		else
++			host->data->error = -ETIMEDOUT;
++
++		if (host->debug) {
++			log_dump();
++			bcm2835_sdhost_dumpregs(host);
++		}
++	}
++
++	if (!host->dma_desc) {
++		BUG_ON(!host->blocks);
++		if (host->data->error || (--host->blocks == 0)) {
++			bcm2835_sdhost_finish_data(host);
++		} else {
++			bcm2835_sdhost_transfer_pio(host);
++		}
++	} else if (host->data->flags & MMC_DATA_WRITE) {
++		bcm2835_sdhost_finish_data(host);
++	}
++}
++
++static irqreturn_t bcm2835_sdhost_irq(int irq, void *dev_id)
++{
++	irqreturn_t result = IRQ_NONE;
++	struct bcm2835_host *host = dev_id;
++	u32 intmask;
++
++	spin_lock(&host->lock);
++
++	intmask = bcm2835_sdhost_read(host, SDHSTS);
++	log_event("IRQ<", intmask, 0);
++
++	bcm2835_sdhost_write(host,
++			     SDHSTS_BUSY_IRPT |
++			     SDHSTS_BLOCK_IRPT |
++			     SDHSTS_SDIO_IRPT |
++			     SDHSTS_DATA_FLAG,
++			     SDHSTS);
++
++	if (intmask & SDHSTS_BLOCK_IRPT) {
++		bcm2835_sdhost_block_irq(host, intmask);
++		result = IRQ_HANDLED;
++	}
++
++	if (intmask & SDHSTS_BUSY_IRPT) {
++		bcm2835_sdhost_busy_irq(host, intmask);
++		result = IRQ_HANDLED;
++	}
++
++	/* There is no true data interrupt status bit, so it is
++	   necessary to qualify the data flag with the interrupt
++	   enable bit */
++	if ((intmask & SDHSTS_DATA_FLAG) &&
++	    (host->hcfg & SDHCFG_DATA_IRPT_EN)) {
++		bcm2835_sdhost_data_irq(host, intmask);
++		result = IRQ_HANDLED;
++	}
++
++	log_event("IRQ>", bcm2835_sdhost_read(host, SDHSTS), 0);
++	spin_unlock(&host->lock);
++
++	return result;
++}
++
++void bcm2835_sdhost_set_clock(struct bcm2835_host *host, unsigned int clock)
++{
++	int div = 0; /* Initialized for compiler warning */
++	unsigned int input_clock = clock;
++	unsigned long flags;
++
++	if (host->debug)
++		pr_info("%s: set_clock(%d)\n", mmc_hostname(host->mmc), clock);
++
++	if (host->overclock_50 && (clock == 50*MHZ))
++		clock = host->overclock_50 * MHZ + (MHZ - 1);
++
++	/* The SDCDIV register has 11 bits, and holds (div - 2).
++	   But in data mode the max is 50MHz wihout a minimum, and only the
++	   bottom 3 bits are used. Since the switch over is automatic (unless
++	   we have marked the card as slow...), chosen values have to make
++	   sense in both modes.
++	   Ident mode must be 100-400KHz, so can range check the requested
++	   clock. CMD15 must be used to return to data mode, so this can be
++	   monitored.
++
++	   clock 250MHz -> 0->125MHz, 1->83.3MHz, 2->62.5MHz, 3->50.0MHz
++                           4->41.7MHz, 5->35.7MHz, 6->31.3MHz, 7->27.8MHz
++
++			 623->400KHz/27.8MHz
++			 reset value (507)->491159/50MHz
++
++	   BUT, the 3-bit clock divisor in data mode is too small if the
++	   core clock is higher than 250MHz, so instead use the SLOW_CARD
++	   configuration bit to force the use of the ident clock divisor
++	   at all times.
++	*/
++
++	host->mmc->actual_clock = 0;
++
++	if (host->firmware_sets_cdiv) {
++		u32 msg[3] = { clock, 0, 0 };
++
++		rpi_firmware_property(host->fw,
++				      RPI_FIRMWARE_SET_SDHOST_CLOCK,
++				      &msg, sizeof(msg));
++
++		clock = max(msg[1], msg[2]);
++		spin_lock_irqsave(&host->lock, flags);
++	} else {
++		spin_lock_irqsave(&host->lock, flags);
++		if (clock < 100000) {
++			/* Can't stop the clock, but make it as slow as
++			 * possible to show willing
++			 */
++			host->cdiv = SDCDIV_MAX_CDIV;
++			bcm2835_sdhost_write(host, host->cdiv, SDCDIV);
++			spin_unlock_irqrestore(&host->lock, flags);
++			return;
++		}
++
++		div = host->max_clk / clock;
++		if (div < 2)
++			div = 2;
++		if ((host->max_clk / div) > clock)
++			div++;
++		div -= 2;
++
++		if (div > SDCDIV_MAX_CDIV)
++			div = SDCDIV_MAX_CDIV;
++
++		clock = host->max_clk / (div + 2);
++
++		host->cdiv = div;
++		bcm2835_sdhost_write(host, host->cdiv, SDCDIV);
++
++		if (host->debug)
++			pr_info("%s: clock=%d -> max_clk=%d, cdiv=%x "
++				"(actual clock %d)\n",
++				mmc_hostname(host->mmc), input_clock,
++				host->max_clk, host->cdiv,
++				clock);
++	}
++
++	/* Calibrate some delays */
++
++	host->ns_per_fifo_word = (1000000000/clock) *
++		((host->mmc->caps & MMC_CAP_4_BIT_DATA) ? 8 : 32);
++
++	if (input_clock == 50 * MHZ) {
++		if (clock > input_clock) {
++			/* Save the closest value, to make it easier
++			   to reduce in the event of error */
++			host->overclock_50 = (clock/MHZ);
++
++			if (clock != host->overclock) {
++				pr_info("%s: overclocking to %dHz\n",
++					mmc_hostname(host->mmc), clock);
++				host->overclock = clock;
++			}
++		} else if (host->overclock) {
++			host->overclock = 0;
++			if (clock == 50 * MHZ)
++				pr_warn("%s: cancelling overclock\n",
++					mmc_hostname(host->mmc));
++		}
++	} else if (input_clock == 0) {
++		/* Reset the preferred overclock when the clock is stopped.
++		 * This always happens during initialisation. */
++		host->overclock_50 = host->user_overclock_50;
++		host->overclock = 0;
++	}
++
++	/* Set the timeout to 500ms */
++	bcm2835_sdhost_write(host, clock/2, SDTOUT);
++
++	host->mmc->actual_clock = clock;
++	host->clock = input_clock;
++	host->reset_clock = 0;
++
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_sdhost_request(struct mmc_host *mmc, struct mmc_request *mrq)
++{
++	struct bcm2835_host *host;
++	unsigned long flags;
++	u32 edm, fsm;
++
++	host = mmc_priv(mmc);
++
++	if (host->debug) {
++		struct mmc_command *cmd = mrq->cmd;
++		BUG_ON(!cmd);
++		if (cmd->data)
++			pr_info("%s: cmd %d 0x%x (flags 0x%x) - %s %d*%d\n",
++				mmc_hostname(mmc),
++				cmd->opcode, cmd->arg, cmd->flags,
++				(cmd->data->flags & MMC_DATA_READ) ?
++				"read" : "write", cmd->data->blocks,
++				cmd->data->blksz);
++		else
++			pr_info("%s: cmd %d 0x%x (flags 0x%x)\n",
++				mmc_hostname(mmc),
++				cmd->opcode, cmd->arg, cmd->flags);
++	}
++
++	/* Reset the error statuses in case this is a retry */
++	if (mrq->sbc)
++		mrq->sbc->error = 0;
++	if (mrq->cmd)
++		mrq->cmd->error = 0;
++	if (mrq->data)
++		mrq->data->error = 0;
++	if (mrq->stop)
++		mrq->stop->error = 0;
++
++	if (mrq->data && !is_power_of_2(mrq->data->blksz)) {
++		pr_err("%s: unsupported block size (%d bytes)\n",
++		       mmc_hostname(mmc), mrq->data->blksz);
++		mrq->cmd->error = -EINVAL;
++		mmc_request_done(mmc, mrq);
++		return;
++	}
++
++	if (host->use_dma && mrq->data &&
++	    (mrq->data->blocks > host->pio_limit))
++		bcm2835_sdhost_prepare_dma(host, mrq->data);
++
++	if (host->reset_clock)
++	    bcm2835_sdhost_set_clock(host, host->clock);
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	WARN_ON(host->mrq != NULL);
++	host->mrq = mrq;
++
++	edm = bcm2835_sdhost_read(host, SDEDM);
++	fsm = edm & SDEDM_FSM_MASK;
++
++	log_event("REQ<", mrq, edm);
++	if ((fsm != SDEDM_FSM_IDENTMODE) &&
++	    (fsm != SDEDM_FSM_DATAMODE)) {
++		log_event("REQ!", mrq, edm);
++		if (host->debug) {
++			pr_warn("%s: previous command (%d) not complete (EDM %x)\n",
++			       mmc_hostname(host->mmc),
++			       bcm2835_sdhost_read(host, SDCMD) & SDCMD_CMD_MASK,
++			       edm);
++			log_dump();
++			bcm2835_sdhost_dumpregs(host);
++		}
++		mrq->cmd->error = -EILSEQ;
++		tasklet_schedule(&host->finish_tasklet);
++		spin_unlock_irqrestore(&host->lock, flags);
++		return;
++	}
++
++	host->use_sbc = !!mrq->sbc &&
++		(host->mrq->data->flags & USE_CMD23_FLAGS);
++	if (host->use_sbc) {
++		if (bcm2835_sdhost_send_command(host, mrq->sbc)) {
++			if (!host->use_busy)
++				bcm2835_sdhost_finish_command(host, &flags);
++		}
++	} else if (bcm2835_sdhost_send_command(host, mrq->cmd)) {
++		if (host->data && host->dma_desc)
++			/* DMA transfer starts now, PIO starts after irq */
++			bcm2835_sdhost_start_dma(host);
++
++		if (!host->use_busy)
++			bcm2835_sdhost_finish_command(host, &flags);
++	}
++
++	log_event("CMD ", mrq->cmd->opcode,
++		   mrq->data ? (u32)mrq->data->blksz : 0);
++
++	log_event("REQ>", mrq, 0);
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_sdhost_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
++{
++
++	struct bcm2835_host *host = mmc_priv(mmc);
++	unsigned long flags;
++
++	if (host->debug)
++		pr_info("%s: ios clock %d, pwr %d, bus_width %d, "
++			"timing %d, vdd %d, drv_type %d\n",
++			mmc_hostname(mmc),
++			ios->clock, ios->power_mode, ios->bus_width,
++			ios->timing, ios->signal_voltage, ios->drv_type);
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	log_event("IOS<", ios->clock, 0);
++
++	/* set bus width */
++	host->hcfg &= ~SDHCFG_WIDE_EXT_BUS;
++	if (ios->bus_width == MMC_BUS_WIDTH_4)
++		host->hcfg |= SDHCFG_WIDE_EXT_BUS;
++
++	host->hcfg |= SDHCFG_WIDE_INT_BUS;
++
++	/* Disable clever clock switching, to cope with fast core clocks */
++	host->hcfg |= SDHCFG_SLOW_CARD;
++
++	bcm2835_sdhost_write(host, host->hcfg, SDHCFG);
++
++	spin_unlock_irqrestore(&host->lock, flags);
++
++	if (!ios->clock || ios->clock != host->clock)
++		bcm2835_sdhost_set_clock(host, ios->clock);
++}
++
++static struct mmc_host_ops bcm2835_sdhost_ops = {
++	.request = bcm2835_sdhost_request,
++	.set_ios = bcm2835_sdhost_set_ios,
++	.hw_reset = bcm2835_sdhost_reset,
++};
++
++static void bcm2835_sdhost_cmd_wait_work(struct work_struct *work)
++{
++	struct bcm2835_host *host;
++	unsigned long flags;
++
++	host = container_of(work, struct bcm2835_host, cmd_wait_wq);
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	log_event("CWK<", host->cmd, host->mrq);
++
++	/*
++	 * If this tasklet gets rescheduled while running, it will
++	 * be run again afterwards but without any active request.
++	 */
++	if (!host->mrq) {
++		spin_unlock_irqrestore(&host->lock, flags);
++		return;
++	}
++
++	bcm2835_sdhost_finish_command(host, &flags);
++
++	log_event("CWK>", host->cmd, 0);
++
++	spin_unlock_irqrestore(&host->lock, flags);
++}
++
++static void bcm2835_sdhost_tasklet_finish(unsigned long param)
++{
++	struct bcm2835_host *host;
++	unsigned long flags;
++	struct mmc_request *mrq;
++	struct dma_chan *terminate_chan = NULL;
++
++	host = (struct bcm2835_host *)param;
++
++	spin_lock_irqsave(&host->lock, flags);
++
++	log_event("TSK<", host->mrq, 0);
++	/*
++	 * If this tasklet gets rescheduled while running, it will
++	 * be run again afterwards but without any active request.
++	 */
++	if (!host->mrq) {
++		spin_unlock_irqrestore(&host->lock, flags);
++		return;
++	}
++
++	del_timer(&host->timer);
++
++	mrq = host->mrq;
++
++	/* Drop the overclock after any data corruption, or after any
++	 * error while overclocked. Ignore errors for status commands,
++	 * as they are likely when a card is ejected. */
++	if (host->overclock) {
++		if ((mrq->cmd && mrq->cmd->error &&
++		     (mrq->cmd->opcode != MMC_SEND_STATUS)) ||
++		    (mrq->data && mrq->data->error) ||
++		    (mrq->stop && mrq->stop->error) ||
++		    (mrq->sbc && mrq->sbc->error)) {
++			host->overclock_50--;
++			pr_warn("%s: reducing overclock due to errors\n",
++				mmc_hostname(host->mmc));
++			host->reset_clock = 1;
++			mrq->cmd->error = -ETIMEDOUT;
++			mrq->cmd->retries = 1;
++		}
++	}
++
++	host->mrq = NULL;
++	host->cmd = NULL;
++	host->data = NULL;
++
++	host->dma_desc = NULL;
++	terminate_chan = host->dma_chan;
++	host->dma_chan = NULL;
++
++	spin_unlock_irqrestore(&host->lock, flags);
++
++	if (terminate_chan)
++	{
++		int err = dmaengine_terminate_all(terminate_chan);
++		if (err)
++			pr_err("%s: failed to terminate DMA (%d)\n",
++			       mmc_hostname(host->mmc), err);
++	}
++
++	/* The SDHOST block doesn't report any errors for a disconnected
++	   interface. All cards and SDIO devices should report some supported
++	   voltage range, so a zero response to SEND_OP_COND, IO_SEND_OP_COND
++	   or APP_SEND_OP_COND can be treated as an error. */
++	if (((mrq->cmd->opcode == MMC_SEND_OP_COND) ||
++	     (mrq->cmd->opcode == SD_IO_SEND_OP_COND) ||
++	     (mrq->cmd->opcode == SD_APP_OP_COND)) &&
++	    (mrq->cmd->error == 0) &&
++	    (mrq->cmd->resp[0] == 0)) {
++		mrq->cmd->error = -ETIMEDOUT;
++		if (host->debug)
++			pr_info("%s: faking timeout due to zero OCR\n",
++				mmc_hostname(host->mmc));
++	}
++
++	mmc_request_done(host->mmc, mrq);
++	log_event("TSK>", mrq, 0);
++}
++
++int bcm2835_sdhost_add_host(struct bcm2835_host *host)
++{
++	struct mmc_host *mmc;
++	struct dma_slave_config cfg;
++	char pio_limit_string[20];
++	int ret;
++
++	mmc = host->mmc;
++
++	if (!mmc->f_max || mmc->f_max > host->max_clk)
++		mmc->f_max = host->max_clk;
++	mmc->f_min = host->max_clk / SDCDIV_MAX_CDIV;
++
++	mmc->max_busy_timeout =  (~(unsigned int)0)/(mmc->f_max/1000);
++
++	pr_debug("f_max %d, f_min %d, max_busy_timeout %d\n",
++		 mmc->f_max, mmc->f_min, mmc->max_busy_timeout);
++
++	/* host controller capabilities */
++	mmc->caps |=
++		MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
++		MMC_CAP_NEEDS_POLL | MMC_CAP_HW_RESET |
++		((ALLOW_CMD23_READ|ALLOW_CMD23_WRITE) * MMC_CAP_CMD23);
++
++	spin_lock_init(&host->lock);
++
++	if (host->allow_dma) {
++		if (IS_ERR_OR_NULL(host->dma_chan_rxtx)) {
++			pr_err("%s: unable to initialise DMA channel. "
++			       "Falling back to PIO\n",
++			       mmc_hostname(mmc));
++			host->use_dma = false;
++		} else {
++			cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
++			cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
++			cfg.slave_id = 13;		/* DREQ channel */
++
++			/* Validate the slave configurations */
++
++			cfg.direction = DMA_MEM_TO_DEV;
++			cfg.src_addr = 0;
++			cfg.dst_addr = host->bus_addr + SDDATA;
++
++			ret = dmaengine_slave_config(host->dma_chan_rxtx, &cfg);
++
++			if (ret == 0) {
++				host->dma_cfg_tx = cfg;
++
++				cfg.direction = DMA_DEV_TO_MEM;
++				cfg.src_addr = host->bus_addr + SDDATA;
++				cfg.dst_addr = 0;
++
++				ret = dmaengine_slave_config(host->dma_chan_rxtx, &cfg);
++			}
++
++			if (ret == 0) {
++				host->dma_cfg_rx = cfg;
++
++				host->use_dma = true;
++			} else {
++				pr_err("%s: unable to configure DMA channel. "
++				       "Falling back to PIO\n",
++				       mmc_hostname(mmc));
++				dma_release_channel(host->dma_chan_rxtx);
++				host->dma_chan_rxtx = NULL;
++				host->use_dma = false;
++			}
++		}
++	} else {
++		host->use_dma = false;
++	}
++
++	mmc->max_segs = 128;
++	mmc->max_req_size = 524288;
++	mmc->max_seg_size = mmc->max_req_size;
++	mmc->max_blk_size = 512;
++	mmc->max_blk_count =  65535;
++
++	/* report supported voltage ranges */
++	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
++
++	tasklet_init(&host->finish_tasklet,
++		bcm2835_sdhost_tasklet_finish, (unsigned long)host);
++
++	INIT_WORK(&host->cmd_wait_wq, bcm2835_sdhost_cmd_wait_work);
++
++	timer_setup(&host->timer, bcm2835_sdhost_timeout, 0);
++
++	bcm2835_sdhost_init(host, 0);
++
++	ret = request_irq(host->irq, bcm2835_sdhost_irq, 0 /*IRQF_SHARED*/,
++				  mmc_hostname(mmc), host);
++	if (ret) {
++		pr_err("%s: failed to request IRQ %d: %d\n",
++		       mmc_hostname(mmc), host->irq, ret);
++		goto untasklet;
++	}
++
++	mmc_add_host(mmc);
++
++	pio_limit_string[0] = '\0';
++	if (host->use_dma && (host->pio_limit > 0))
++		sprintf(pio_limit_string, " (>%d)", host->pio_limit);
++	pr_info("%s: %s loaded - DMA %s%s\n",
++		mmc_hostname(mmc), DRIVER_NAME,
++		host->use_dma ? "enabled" : "disabled",
++		pio_limit_string);
++
++	return 0;
++
++untasklet:
++	tasklet_kill(&host->finish_tasklet);
++
++	return ret;
++}
++
++static int bcm2835_sdhost_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct device_node *node = dev->of_node;
++	struct clk *clk;
++	struct resource *iomem;
++	struct bcm2835_host *host;
++	struct mmc_host *mmc;
++	const __be32 *addr;
++	u32 msg[3];
++	int na;
++	int ret;
++
++	pr_debug("bcm2835_sdhost_probe\n");
++	mmc = mmc_alloc_host(sizeof(*host), dev);
++	if (!mmc)
++		return -ENOMEM;
++
++	mmc->ops = &bcm2835_sdhost_ops;
++	host = mmc_priv(mmc);
++	host->mmc = mmc;
++	host->pio_timeout = msecs_to_jiffies(500);
++	host->pio_limit = 1;
++	host->max_delay = 1; /* Warn if over 1ms */
++	host->allow_dma = 1;
++	spin_lock_init(&host->lock);
++
++	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	host->ioaddr = devm_ioremap_resource(dev, iomem);
++	if (IS_ERR(host->ioaddr)) {
++		ret = PTR_ERR(host->ioaddr);
++		goto err;
++	}
++
++	na = of_n_addr_cells(node);
++	addr = of_get_address(node, 0, NULL, NULL);
++	if (!addr) {
++		dev_err(dev, "could not get DMA-register address\n");
++		return -ENODEV;
++	}
++	host->bus_addr = (phys_addr_t)of_read_number(addr, na);
++	pr_debug(" - ioaddr %lx, iomem->start %lx, bus_addr %lx\n",
++		 (unsigned long)host->ioaddr,
++		 (unsigned long)iomem->start,
++		 (unsigned long)host->bus_addr);
++
++	if (node) {
++		/* Read any custom properties */
++		of_property_read_u32(node,
++				     "brcm,delay-after-stop",
++				     &host->delay_after_stop);
++		of_property_read_u32(node,
++				     "brcm,overclock-50",
++				     &host->user_overclock_50);
++		of_property_read_u32(node,
++				     "brcm,pio-limit",
++				     &host->pio_limit);
++		host->allow_dma =
++			!of_property_read_bool(node, "brcm,force-pio");
++		host->debug = of_property_read_bool(node, "brcm,debug");
++	}
++
++	host->dma_chan = NULL;
++	host->dma_desc = NULL;
++
++	/* Formally recognise the other way of disabling DMA */
++	if (host->pio_limit == 0x7fffffff)
++		host->allow_dma = false;
++
++	if (host->allow_dma) {
++		if (node) {
++			host->dma_chan_rxtx =
++				dma_request_slave_channel(dev, "rx-tx");
++			if (!host->dma_chan_rxtx)
++				host->dma_chan_rxtx =
++					dma_request_slave_channel(dev, "tx");
++			if (!host->dma_chan_rxtx)
++				host->dma_chan_rxtx =
++					dma_request_slave_channel(dev, "rx");
++		} else {
++			dma_cap_mask_t mask;
++
++			dma_cap_zero(mask);
++			/* we don't care about the channel, any would work */
++			dma_cap_set(DMA_SLAVE, mask);
++			host->dma_chan_rxtx =
++				dma_request_channel(mask, NULL, NULL);
++		}
++	}
++
++	clk = devm_clk_get(dev, NULL);
++	if (IS_ERR(clk)) {
++		ret = PTR_ERR(clk);
++		if (ret == -EPROBE_DEFER)
++			dev_info(dev, "could not get clk, deferring probe\n");
++		else
++			dev_err(dev, "could not get clk\n");
++		goto err;
++	}
++
++	host->fw = rpi_firmware_get(
++		of_parse_phandle(dev->of_node, "firmware", 0));
++	if (!host->fw) {
++		ret = -EPROBE_DEFER;
++		goto err;
++	}
++
++	host->max_clk = clk_get_rate(clk);
++
++	host->irq = platform_get_irq(pdev, 0);
++	if (host->irq <= 0) {
++		dev_err(dev, "get IRQ failed\n");
++		ret = -EINVAL;
++		goto err;
++	}
++
++	pr_debug(" - max_clk %lx, irq %d\n",
++		 (unsigned long)host->max_clk,
++		 (int)host->irq);
++
++	log_init(dev, iomem->start - host->bus_addr);
++
++	if (node)
++		mmc_of_parse(mmc);
++	else
++		mmc->caps |= MMC_CAP_4_BIT_DATA;
++
++	msg[0] = 0;
++	msg[1] = ~0;
++	msg[2] = ~0;
++
++	rpi_firmware_property(host->fw,
++			      RPI_FIRMWARE_SET_SDHOST_CLOCK,
++			      &msg, sizeof(msg));
++
++	host->firmware_sets_cdiv = (msg[1] != ~0);
++
++	ret = bcm2835_sdhost_add_host(host);
++	if (ret)
++		goto err;
++
++	platform_set_drvdata(pdev, host);
++
++	pr_debug("bcm2835_sdhost_probe -> OK\n");
++
++	return 0;
++
++err:
++	pr_debug("bcm2835_sdhost_probe -> err %d\n", ret);
++	if (host->fw)
++		rpi_firmware_put(host->fw);
++	if (host->dma_chan_rxtx)
++		dma_release_channel(host->dma_chan_rxtx);
++	mmc_free_host(mmc);
++
++	return ret;
++}
++
++static int bcm2835_sdhost_remove(struct platform_device *pdev)
++{
++	struct bcm2835_host *host = platform_get_drvdata(pdev);
++
++	pr_debug("bcm2835_sdhost_remove\n");
++
++	mmc_remove_host(host->mmc);
++
++	bcm2835_sdhost_set_power(host, false);
++
++	free_irq(host->irq, host);
++
++	del_timer_sync(&host->timer);
++
++	tasklet_kill(&host->finish_tasklet);
++	rpi_firmware_put(host->fw);
++	if (host->dma_chan_rxtx)
++		dma_release_channel(host->dma_chan_rxtx);
++	mmc_free_host(host->mmc);
++	platform_set_drvdata(pdev, NULL);
++
++	pr_debug("bcm2835_sdhost_remove - OK\n");
++	return 0;
++}
++
++static const struct of_device_id bcm2835_sdhost_match[] = {
++	{ .compatible = "brcm,bcm2835-sdhost" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, bcm2835_sdhost_match);
++
++static struct platform_driver bcm2835_sdhost_driver = {
++	.probe      = bcm2835_sdhost_probe,
++	.remove     = bcm2835_sdhost_remove,
++	.driver     = {
++		.name		= DRIVER_NAME,
++		.owner		= THIS_MODULE,
++		.of_match_table	= bcm2835_sdhost_match,
++	},
++};
++module_platform_driver(bcm2835_sdhost_driver);
++
++MODULE_ALIAS("platform:sdhost-bcm2835");
++MODULE_DESCRIPTION("BCM2835 SDHost driver");
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Phil Elwell");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0072-vc_mem-Add-vc_mem-driver-for-querying-firmware-memor.patch b/target/linux/bcm27xx/patches-5.15/950-0072-vc_mem-Add-vc_mem-driver-for-querying-firmware-memor.patch
new file mode 100644
index 0000000000..67b526571b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0072-vc_mem-Add-vc_mem-driver-for-querying-firmware-memor.patch
@@ -0,0 +1,493 @@
+From 47c1d1988df17bf39bbf3a188d78792eaa693068 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Fri, 28 Oct 2016 15:36:43 +0100
+Subject: [PATCH] vc_mem: Add vc_mem driver for querying firmware
+ memory addresses
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+
+BCM270x: Move vc_mem
+
+Make the vc_mem module available for ARCH_BCM2835 by moving it.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+char: vc_mem: Fix up compat ioctls for 64bit kernel
+
+compat_ioctl wasn't defined, so 32bit user/64bit kernel
+always failed.
+VC_MEM_IOC_MEM_PHYS_ADDR was defined with parameter size
+unsigned long, so the ioctl cmd changes between sizes.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+char: vc_mem: Fix all coding style issues.
+
+Cleans up all checkpatch errors in vc_mem.c and vc_mem.h
+No functional change to the code.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+char: vc_mem: Delete dead code
+
+There are no error exists once device_create has succeeded, and
+therefore no need to call device_destroy from vc_mem_init.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/char/broadcom/Kconfig   |  18 ++
+ drivers/char/broadcom/Makefile  |   1 +
+ drivers/char/broadcom/vc_mem.c  | 373 ++++++++++++++++++++++++++++++++
+ include/linux/broadcom/vc_mem.h |  39 ++++
+ 4 files changed, 431 insertions(+)
+ create mode 100644 drivers/char/broadcom/Kconfig
+ create mode 100644 drivers/char/broadcom/Makefile
+ create mode 100644 drivers/char/broadcom/vc_mem.c
+ create mode 100644 include/linux/broadcom/vc_mem.h
+
+--- /dev/null
++++ b/drivers/char/broadcom/Kconfig
+@@ -0,0 +1,18 @@
++#
++# Broadcom char driver config
++#
++
++menuconfig BRCM_CHAR_DRIVERS
++	bool "Broadcom Char Drivers"
++	help
++	  Broadcom's char drivers
++
++if BRCM_CHAR_DRIVERS
++
++config BCM2708_VCMEM
++	bool "Videocore Memory"
++        default y
++        help
++          Helper for videocore memory access and total size allocation.
++
++endif
+--- /dev/null
++++ b/drivers/char/broadcom/Makefile
+@@ -0,0 +1 @@
++obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
+--- /dev/null
++++ b/drivers/char/broadcom/vc_mem.c
+@@ -0,0 +1,373 @@
++/*
++ * Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
++ *
++ * Unless you and Broadcom execute a separate written software license
++ * agreement governing use of this software, this software is licensed to you
++ * under the terms of the GNU General Public License version 2, available at
++ * http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++ *
++ * Notwithstanding the above, under no circumstances may you combine this
++ * software in any way with any other Broadcom software provided under a
++ * license other than the GPL, without Broadcom's express prior written
++ * consent.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/fs.h>
++#include <linux/device.h>
++#include <linux/cdev.h>
++#include <linux/mm.h>
++#include <linux/slab.h>
++#include <linux/debugfs.h>
++#include <linux/uaccess.h>
++#include <linux/dma-mapping.h>
++#include <linux/broadcom/vc_mem.h>
++
++#define DRIVER_NAME  "vc-mem"
++
++/* Device (/dev) related variables */
++static dev_t vc_mem_devnum;
++static struct class *vc_mem_class;
++static struct cdev vc_mem_cdev;
++static int vc_mem_inited;
++
++#ifdef CONFIG_DEBUG_FS
++static struct dentry *vc_mem_debugfs_entry;
++#endif
++
++/*
++ * Videocore memory addresses and size
++ *
++ * Drivers that wish to know the videocore memory addresses and sizes should
++ * use these variables instead of the MM_IO_BASE and MM_ADDR_IO defines in
++ * headers. This allows the other drivers to not be tied down to a a certain
++ * address/size at compile time.
++ *
++ * In the future, the goal is to have the videocore memory virtual address and
++ * size be calculated at boot time rather than at compile time. The decision of
++ * where the videocore memory resides and its size would be in the hands of the
++ * bootloader (and/or kernel). When that happens, the values of these variables
++ * would be calculated and assigned in the init function.
++ */
++/* In the 2835 VC in mapped above ARM, but ARM has full access to VC space */
++unsigned long mm_vc_mem_phys_addr;
++EXPORT_SYMBOL(mm_vc_mem_phys_addr);
++unsigned int mm_vc_mem_size;
++EXPORT_SYMBOL(mm_vc_mem_size);
++unsigned int mm_vc_mem_base;
++EXPORT_SYMBOL(mm_vc_mem_base);
++
++static uint phys_addr;
++static uint mem_size;
++static uint mem_base;
++
++static int
++vc_mem_open(struct inode *inode, struct file *file)
++{
++	(void)inode;
++
++	pr_debug("%s: called file = 0x%p\n", __func__, file);
++
++	return 0;
++}
++
++static int
++vc_mem_release(struct inode *inode, struct file *file)
++{
++	(void)inode;
++
++	pr_debug("%s: called file = 0x%p\n", __func__, file);
++
++	return 0;
++}
++
++static void
++vc_mem_get_size(void)
++{
++}
++
++static void
++vc_mem_get_base(void)
++{
++}
++
++int
++vc_mem_get_current_size(void)
++{
++	return mm_vc_mem_size;
++}
++EXPORT_SYMBOL_GPL(vc_mem_get_current_size);
++
++static long
++vc_mem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	int rc = 0;
++
++	(void) cmd;
++	(void) arg;
++
++	pr_debug("%s: called file = 0x%p, cmd %08x\n", __func__, file, cmd);
++
++	switch (cmd) {
++	case VC_MEM_IOC_MEM_PHYS_ADDR:
++		{
++			pr_debug("%s: VC_MEM_IOC_MEM_PHYS_ADDR=0x%p\n",
++				__func__, (void *)mm_vc_mem_phys_addr);
++
++			if (copy_to_user((void *)arg, &mm_vc_mem_phys_addr,
++					 sizeof(mm_vc_mem_phys_addr))) {
++				rc = -EFAULT;
++			}
++			break;
++		}
++	case VC_MEM_IOC_MEM_SIZE:
++		{
++			/* Get the videocore memory size first */
++			vc_mem_get_size();
++
++			pr_debug("%s: VC_MEM_IOC_MEM_SIZE=%x\n", __func__,
++				 mm_vc_mem_size);
++
++			if (copy_to_user((void *)arg, &mm_vc_mem_size,
++					 sizeof(mm_vc_mem_size))) {
++				rc = -EFAULT;
++			}
++			break;
++		}
++	case VC_MEM_IOC_MEM_BASE:
++		{
++			/* Get the videocore memory base */
++			vc_mem_get_base();
++
++			pr_debug("%s: VC_MEM_IOC_MEM_BASE=%x\n", __func__,
++				 mm_vc_mem_base);
++
++			if (copy_to_user((void *)arg, &mm_vc_mem_base,
++					 sizeof(mm_vc_mem_base))) {
++				rc = -EFAULT;
++			}
++			break;
++		}
++	case VC_MEM_IOC_MEM_LOAD:
++		{
++			/* Get the videocore memory base */
++			vc_mem_get_base();
++
++			pr_debug("%s: VC_MEM_IOC_MEM_LOAD=%x\n", __func__,
++				mm_vc_mem_base);
++
++			if (copy_to_user((void *)arg, &mm_vc_mem_base,
++					 sizeof(mm_vc_mem_base))) {
++				rc = -EFAULT;
++			}
++			break;
++		}
++	default:
++		{
++			return -ENOTTY;
++		}
++	}
++	pr_debug("%s: file = 0x%p returning %d\n", __func__, file, rc);
++
++	return rc;
++}
++
++#ifdef CONFIG_COMPAT
++static long
++vc_mem_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	int rc = 0;
++
++	switch (cmd) {
++	case VC_MEM_IOC_MEM_PHYS_ADDR32:
++		pr_debug("%s: VC_MEM_IOC_MEM_PHYS_ADDR32=0x%p\n",
++			 __func__, (void *)mm_vc_mem_phys_addr);
++
++		/* This isn't correct, but will cover us for now as
++		 * VideoCore is 32bit only.
++		 */
++		if (copy_to_user((void *)arg, &mm_vc_mem_phys_addr,
++				 sizeof(compat_ulong_t)))
++			rc = -EFAULT;
++
++		break;
++
++	default:
++		rc = vc_mem_ioctl(file, cmd, arg);
++		break;
++	}
++
++	return rc;
++}
++#endif
++
++static int
++vc_mem_mmap(struct file *filp, struct vm_area_struct *vma)
++{
++	int rc = 0;
++	unsigned long length = vma->vm_end - vma->vm_start;
++	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
++
++	pr_debug("%s: vm_start = 0x%08lx vm_end = 0x%08lx vm_pgoff = 0x%08lx\n",
++		 __func__, (long)vma->vm_start, (long)vma->vm_end,
++		 (long)vma->vm_pgoff);
++
++	if (offset + length > mm_vc_mem_size) {
++		pr_err("%s: length %ld is too big\n", __func__, length);
++		return -EINVAL;
++	}
++	/* Do not cache the memory map */
++	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
++
++	rc = remap_pfn_range(vma, vma->vm_start,
++			     (mm_vc_mem_phys_addr >> PAGE_SHIFT) +
++			     vma->vm_pgoff, length, vma->vm_page_prot);
++	if (rc)
++		pr_err("%s: remap_pfn_range failed (rc=%d)\n", __func__, rc);
++
++	return rc;
++}
++
++/* File Operations for the driver. */
++static const struct file_operations vc_mem_fops = {
++	.owner = THIS_MODULE,
++	.open = vc_mem_open,
++	.release = vc_mem_release,
++	.unlocked_ioctl = vc_mem_ioctl,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl = vc_mem_compat_ioctl,
++#endif
++	.mmap = vc_mem_mmap,
++};
++
++#ifdef CONFIG_DEBUG_FS
++static void vc_mem_debugfs_deinit(void)
++{
++	debugfs_remove_recursive(vc_mem_debugfs_entry);
++	vc_mem_debugfs_entry = NULL;
++}
++
++
++static int vc_mem_debugfs_init(
++	struct device *dev)
++{
++	vc_mem_debugfs_entry = debugfs_create_dir(DRIVER_NAME, NULL);
++	if (!vc_mem_debugfs_entry) {
++		dev_warn(dev, "could not create debugfs entry\n");
++		return -EFAULT;
++	}
++
++	debugfs_create_x32("vc_mem_phys_addr",
++				0444,
++				vc_mem_debugfs_entry,
++				(u32 *)&mm_vc_mem_phys_addr);
++	debugfs_create_x32("vc_mem_size",
++				0444,
++				vc_mem_debugfs_entry,
++				(u32 *)&mm_vc_mem_size);
++	debugfs_create_x32("vc_mem_base",
++				0444,
++				vc_mem_debugfs_entry,
++				(u32 *)&mm_vc_mem_base);
++
++	return 0;
++}
++
++#endif /* CONFIG_DEBUG_FS */
++
++/* Module load/unload functions */
++
++static int __init
++vc_mem_init(void)
++{
++	int rc = -EFAULT;
++	struct device *dev;
++
++	pr_debug("%s: called\n", __func__);
++
++	mm_vc_mem_phys_addr = phys_addr;
++	mm_vc_mem_size = mem_size;
++	mm_vc_mem_base = mem_base;
++
++	vc_mem_get_size();
++
++	pr_info("vc-mem: phys_addr:0x%08lx mem_base=0x%08x mem_size:0x%08x(%u MiB)\n",
++		mm_vc_mem_phys_addr, mm_vc_mem_base, mm_vc_mem_size,
++		mm_vc_mem_size / (1024 * 1024));
++
++	rc = alloc_chrdev_region(&vc_mem_devnum, 0, 1, DRIVER_NAME);
++	if (rc < 0) {
++		pr_err("%s: alloc_chrdev_region failed (rc=%d)\n",
++		       __func__, rc);
++		goto out_err;
++	}
++
++	cdev_init(&vc_mem_cdev, &vc_mem_fops);
++	rc = cdev_add(&vc_mem_cdev, vc_mem_devnum, 1);
++	if (rc) {
++		pr_err("%s: cdev_add failed (rc=%d)\n", __func__, rc);
++		goto out_unregister;
++	}
++
++	vc_mem_class = class_create(THIS_MODULE, DRIVER_NAME);
++	if (IS_ERR(vc_mem_class)) {
++		rc = PTR_ERR(vc_mem_class);
++		pr_err("%s: class_create failed (rc=%d)\n", __func__, rc);
++		goto out_cdev_del;
++	}
++
++	dev = device_create(vc_mem_class, NULL, vc_mem_devnum, NULL,
++			    DRIVER_NAME);
++	if (IS_ERR(dev)) {
++		rc = PTR_ERR(dev);
++		pr_err("%s: device_create failed (rc=%d)\n", __func__, rc);
++		goto out_class_destroy;
++	}
++
++#ifdef CONFIG_DEBUG_FS
++	/* don't fail if the debug entries cannot be created */
++	vc_mem_debugfs_init(dev);
++#endif
++
++	vc_mem_inited = 1;
++	return 0;
++
++out_class_destroy:
++	class_destroy(vc_mem_class);
++	vc_mem_class = NULL;
++
++out_cdev_del:
++	cdev_del(&vc_mem_cdev);
++
++out_unregister:
++	unregister_chrdev_region(vc_mem_devnum, 1);
++
++out_err:
++	return -1;
++}
++
++static void __exit
++vc_mem_exit(void)
++{
++	pr_debug("%s: called\n", __func__);
++
++	if (vc_mem_inited) {
++#if CONFIG_DEBUG_FS
++		vc_mem_debugfs_deinit();
++#endif
++		device_destroy(vc_mem_class, vc_mem_devnum);
++		class_destroy(vc_mem_class);
++		cdev_del(&vc_mem_cdev);
++		unregister_chrdev_region(vc_mem_devnum, 1);
++	}
++}
++
++module_init(vc_mem_init);
++module_exit(vc_mem_exit);
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Broadcom Corporation");
++
++module_param(phys_addr, uint, 0644);
++module_param(mem_size, uint, 0644);
++module_param(mem_base, uint, 0644);
+--- /dev/null
++++ b/include/linux/broadcom/vc_mem.h
+@@ -0,0 +1,39 @@
++/*
++ * Copyright 2010 - 2011 Broadcom Corporation.  All rights reserved.
++ *
++ * Unless you and Broadcom execute a separate written software license
++ * agreement governing use of this software, this software is licensed to you
++ * under the terms of the GNU General Public License version 2, available at
++ * http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
++ *
++ * Notwithstanding the above, under no circumstances may you combine this
++ * software in any way with any other Broadcom software provided under a
++ * license other than the GPL, without Broadcom's express prior written
++ * consent.
++ */
++
++#ifndef _VC_MEM_H
++#define _VC_MEM_H
++
++#include <linux/ioctl.h>
++
++#define VC_MEM_IOC_MAGIC  'v'
++
++#define VC_MEM_IOC_MEM_PHYS_ADDR    _IOR(VC_MEM_IOC_MAGIC, 0, unsigned long)
++#define VC_MEM_IOC_MEM_SIZE         _IOR(VC_MEM_IOC_MAGIC, 1, unsigned int)
++#define VC_MEM_IOC_MEM_BASE         _IOR(VC_MEM_IOC_MAGIC, 2, unsigned int)
++#define VC_MEM_IOC_MEM_LOAD         _IOR(VC_MEM_IOC_MAGIC, 3, unsigned int)
++
++#ifdef __KERNEL__
++#define VC_MEM_TO_ARM_ADDR_MASK 0x3FFFFFFF
++
++extern unsigned long mm_vc_mem_phys_addr;
++extern unsigned int  mm_vc_mem_size;
++extern int vc_mem_get_current_size(void);
++#endif
++
++#ifdef CONFIG_COMPAT
++#define VC_MEM_IOC_MEM_PHYS_ADDR32  _IOR(VC_MEM_IOC_MAGIC, 0, compat_ulong_t)
++#endif
++
++#endif  /* _VC_MEM_H */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0073-Add-dev-gpiomem-device-for-rootless-user-GPIO-access.patch b/target/linux/bcm27xx/patches-5.15/950-0073-Add-dev-gpiomem-device-for-rootless-user-GPIO-access.patch
new file mode 100644
index 0000000000..1a7bd03f2b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0073-Add-dev-gpiomem-device-for-rootless-user-GPIO-access.patch
@@ -0,0 +1,299 @@
+From 13d6f1d6ccff0a381bd1e8149b4964158627d5cc Mon Sep 17 00:00:00 2001
+From: Luke Wren <luke@raspberrypi.org>
+Date: Fri, 21 Aug 2015 23:14:48 +0100
+Subject: [PATCH] Add /dev/gpiomem device for rootless user GPIO access
+
+Signed-off-by: Luke Wren <luke@raspberrypi.org>
+
+bcm2835-gpiomem: Fix for ARCH_BCM2835 builds
+
+Build on ARCH_BCM2835, and fail to probe if no IO resource.
+
+See: https://github.com/raspberrypi/linux/issues/1154
+---
+ drivers/char/broadcom/Kconfig           |   8 +
+ drivers/char/broadcom/Makefile          |   1 +
+ drivers/char/broadcom/bcm2835-gpiomem.c | 258 ++++++++++++++++++++++++
+ 3 files changed, 267 insertions(+)
+ create mode 100644 drivers/char/broadcom/bcm2835-gpiomem.c
+
+--- a/drivers/char/broadcom/Kconfig
++++ b/drivers/char/broadcom/Kconfig
+@@ -16,3 +16,11 @@ config BCM2708_VCMEM
+           Helper for videocore memory access and total size allocation.
+ 
+ endif
++
++config BCM2835_DEVGPIOMEM
++	tristate "/dev/gpiomem rootless GPIO access via mmap() on the BCM2835"
++	default m
++	help
++		Provides users with root-free access to the GPIO registers
++		on the 2835. Calling mmap(/dev/gpiomem) will map the GPIO
++		register page to the user's pointer.
+--- a/drivers/char/broadcom/Makefile
++++ b/drivers/char/broadcom/Makefile
+@@ -1 +1,2 @@
+ obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
++obj-$(CONFIG_BCM2835_DEVGPIOMEM)+= bcm2835-gpiomem.o
+--- /dev/null
++++ b/drivers/char/broadcom/bcm2835-gpiomem.c
+@@ -0,0 +1,258 @@
++/**
++ * GPIO memory device driver
++ *
++ * Creates a chardev /dev/gpiomem which will provide user access to
++ * the BCM2835's GPIO registers when it is mmap()'d.
++ * No longer need root for user GPIO access, but without relaxing permissions
++ * on /dev/mem.
++ *
++ * Written by Luke Wren <luke@raspberrypi.org>
++ * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2, as published by the Free
++ * Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/mm.h>
++#include <linux/slab.h>
++#include <linux/cdev.h>
++#include <linux/pagemap.h>
++#include <linux/io.h>
++
++#define DEVICE_NAME "bcm2835-gpiomem"
++#define DRIVER_NAME "gpiomem-bcm2835"
++#define DEVICE_MINOR 0
++
++struct bcm2835_gpiomem_instance {
++	unsigned long gpio_regs_phys;
++	struct device *dev;
++};
++
++static struct cdev bcm2835_gpiomem_cdev;
++static dev_t bcm2835_gpiomem_devid;
++static struct class *bcm2835_gpiomem_class;
++static struct device *bcm2835_gpiomem_dev;
++static struct bcm2835_gpiomem_instance *inst;
++
++
++/****************************************************************************
++*
++*   GPIO mem chardev file ops
++*
++***************************************************************************/
++
++static int bcm2835_gpiomem_open(struct inode *inode, struct file *file)
++{
++	int dev = iminor(inode);
++	int ret = 0;
++
++	if (dev != DEVICE_MINOR) {
++		dev_err(inst->dev, "Unknown minor device: %d", dev);
++		ret = -ENXIO;
++	}
++	return ret;
++}
++
++static int bcm2835_gpiomem_release(struct inode *inode, struct file *file)
++{
++	int dev = iminor(inode);
++	int ret = 0;
++
++	if (dev != DEVICE_MINOR) {
++		dev_err(inst->dev, "Unknown minor device %d", dev);
++		ret = -ENXIO;
++	}
++	return ret;
++}
++
++static const struct vm_operations_struct bcm2835_gpiomem_vm_ops = {
++#ifdef CONFIG_HAVE_IOREMAP_PROT
++	.access = generic_access_phys
++#endif
++};
++
++static int bcm2835_gpiomem_mmap(struct file *file, struct vm_area_struct *vma)
++{
++	/* Ignore what the user says - they're getting the GPIO regs
++	   whether they like it or not! */
++	unsigned long gpio_page = inst->gpio_regs_phys >> PAGE_SHIFT;
++
++	vma->vm_page_prot = phys_mem_access_prot(file, gpio_page,
++						 PAGE_SIZE,
++						 vma->vm_page_prot);
++	vma->vm_ops = &bcm2835_gpiomem_vm_ops;
++	if (remap_pfn_range(vma, vma->vm_start,
++			gpio_page,
++			PAGE_SIZE,
++			vma->vm_page_prot)) {
++		return -EAGAIN;
++	}
++	return 0;
++}
++
++static const struct file_operations
++bcm2835_gpiomem_fops = {
++	.owner = THIS_MODULE,
++	.open = bcm2835_gpiomem_open,
++	.release = bcm2835_gpiomem_release,
++	.mmap = bcm2835_gpiomem_mmap,
++};
++
++
++ /****************************************************************************
++*
++*   Probe and remove functions
++*
++***************************************************************************/
++
++
++static int bcm2835_gpiomem_probe(struct platform_device *pdev)
++{
++	int err;
++	void *ptr_err;
++	struct device *dev = &pdev->dev;
++	struct resource *ioresource;
++
++	/* Allocate buffers and instance data */
++
++	inst = kzalloc(sizeof(struct bcm2835_gpiomem_instance), GFP_KERNEL);
++
++	if (!inst) {
++		err = -ENOMEM;
++		goto failed_inst_alloc;
++	}
++
++	inst->dev = dev;
++
++	ioresource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (ioresource) {
++		inst->gpio_regs_phys = ioresource->start;
++	} else {
++		dev_err(inst->dev, "failed to get IO resource");
++		err = -ENOENT;
++		goto failed_get_resource;
++	}
++
++	/* Create character device entries */
++
++	err = alloc_chrdev_region(&bcm2835_gpiomem_devid,
++				  DEVICE_MINOR, 1, DEVICE_NAME);
++	if (err != 0) {
++		dev_err(inst->dev, "unable to allocate device number");
++		goto failed_alloc_chrdev;
++	}
++	cdev_init(&bcm2835_gpiomem_cdev, &bcm2835_gpiomem_fops);
++	bcm2835_gpiomem_cdev.owner = THIS_MODULE;
++	err = cdev_add(&bcm2835_gpiomem_cdev, bcm2835_gpiomem_devid, 1);
++	if (err != 0) {
++		dev_err(inst->dev, "unable to register device");
++		goto failed_cdev_add;
++	}
++
++	/* Create sysfs entries */
++
++	bcm2835_gpiomem_class = class_create(THIS_MODULE, DEVICE_NAME);
++	ptr_err = bcm2835_gpiomem_class;
++	if (IS_ERR(ptr_err))
++		goto failed_class_create;
++
++	bcm2835_gpiomem_dev = device_create(bcm2835_gpiomem_class, NULL,
++					bcm2835_gpiomem_devid, NULL,
++					"gpiomem");
++	ptr_err = bcm2835_gpiomem_dev;
++	if (IS_ERR(ptr_err))
++		goto failed_device_create;
++
++	dev_info(inst->dev, "Initialised: Registers at 0x%08lx",
++		inst->gpio_regs_phys);
++
++	return 0;
++
++failed_device_create:
++	class_destroy(bcm2835_gpiomem_class);
++failed_class_create:
++	cdev_del(&bcm2835_gpiomem_cdev);
++	err = PTR_ERR(ptr_err);
++failed_cdev_add:
++	unregister_chrdev_region(bcm2835_gpiomem_devid, 1);
++failed_alloc_chrdev:
++failed_get_resource:
++	kfree(inst);
++failed_inst_alloc:
++	dev_err(inst->dev, "could not load bcm2835_gpiomem");
++	return err;
++}
++
++static int bcm2835_gpiomem_remove(struct platform_device *pdev)
++{
++	struct device *dev = inst->dev;
++
++	kfree(inst);
++	device_destroy(bcm2835_gpiomem_class, bcm2835_gpiomem_devid);
++	class_destroy(bcm2835_gpiomem_class);
++	cdev_del(&bcm2835_gpiomem_cdev);
++	unregister_chrdev_region(bcm2835_gpiomem_devid, 1);
++
++	dev_info(dev, "GPIO mem driver removed - OK");
++	return 0;
++}
++
++ /****************************************************************************
++*
++*   Register the driver with device tree
++*
++***************************************************************************/
++
++static const struct of_device_id bcm2835_gpiomem_of_match[] = {
++	{.compatible = "brcm,bcm2835-gpiomem",},
++	{ /* sentinel */ },
++};
++
++MODULE_DEVICE_TABLE(of, bcm2835_gpiomem_of_match);
++
++static struct platform_driver bcm2835_gpiomem_driver = {
++	.probe = bcm2835_gpiomem_probe,
++	.remove = bcm2835_gpiomem_remove,
++	.driver = {
++		   .name = DRIVER_NAME,
++		   .owner = THIS_MODULE,
++		   .of_match_table = bcm2835_gpiomem_of_match,
++		   },
++};
++
++module_platform_driver(bcm2835_gpiomem_driver);
++
++MODULE_ALIAS("platform:gpiomem-bcm2835");
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("gpiomem driver for accessing GPIO from userspace");
++MODULE_AUTHOR("Luke Wren <luke@raspberrypi.org>");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0074-Add-SMI-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0074-Add-SMI-driver.patch
new file mode 100644
index 0000000000..e626343dd6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0074-Add-SMI-driver.patch
@@ -0,0 +1,1910 @@
+From c7a3892d84af30b95f30d14a1140ddbcf738abf7 Mon Sep 17 00:00:00 2001
+From: Luke Wren <wren6991@gmail.com>
+Date: Sat, 5 Sep 2015 01:14:45 +0100
+Subject: [PATCH] Add SMI driver
+
+Signed-off-by: Luke Wren <wren6991@gmail.com>
+
+MISC: bcm2835: smi: use clock manager and fix reload issues
+
+Use clock manager instead of self-made clockmanager.
+
+Also fix some error paths that showd up during development
+(especially missing release of dma resources on rmmod)
+
+Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
+
+bcm2835_smi: re-add dereference to fix DMA transfers
+---
+ .../bindings/misc/brcm,bcm2835-smi-dev.txt    |  17 +
+ .../bindings/misc/brcm,bcm2835-smi.txt        |  48 +
+ drivers/char/broadcom/Kconfig                 |   9 +
+ drivers/char/broadcom/Makefile                |   1 +
+ drivers/char/broadcom/bcm2835_smi_dev.c       | 402 ++++++++
+ drivers/misc/Kconfig                          |   8 +
+ drivers/misc/Makefile                         |   1 +
+ drivers/misc/bcm2835_smi.c                    | 955 ++++++++++++++++++
+ include/linux/broadcom/bcm2835_smi.h          | 391 +++++++
+ 9 files changed, 1832 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/misc/brcm,bcm2835-smi-dev.txt
+ create mode 100644 Documentation/devicetree/bindings/misc/brcm,bcm2835-smi.txt
+ create mode 100644 drivers/char/broadcom/bcm2835_smi_dev.c
+ create mode 100644 drivers/misc/bcm2835_smi.c
+ create mode 100644 include/linux/broadcom/bcm2835_smi.h
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/misc/brcm,bcm2835-smi-dev.txt
+@@ -0,0 +1,17 @@
++* Broadcom BCM2835 SMI character device driver.
++
++SMI or secondary memory interface is a peripheral specific to certain Broadcom
++SOCs, and is helpful for talking to things like parallel-interface displays
++and NAND flashes (in fact, most things with a parallel register interface).
++
++This driver adds a character device which provides a user-space interface to
++an instance of the SMI driver.
++
++Required properties:
++- compatible: "brcm,bcm2835-smi-dev"
++- smi_handle: a phandle to the smi node.
++
++Optional properties:
++- None.
++
++
+--- /dev/null
++++ b/Documentation/devicetree/bindings/misc/brcm,bcm2835-smi.txt
+@@ -0,0 +1,48 @@
++* Broadcom BCM2835 SMI driver.
++
++SMI or secondary memory interface is a peripheral specific to certain Broadcom
++SOCs, and is helpful for talking to things like parallel-interface displays
++and NAND flashes (in fact, most things with a parallel register interface).
++
++Required properties:
++- compatible: "brcm,bcm2835-smi"
++- reg: Should contain location and length of SMI registers and SMI clkman regs
++- interrupts: *the* SMI interrupt.
++- pinctrl-names: should be "default".
++- pinctrl-0: the phandle of the gpio pin node.
++- brcm,smi-clock-source: the clock source for clkman
++- brcm,smi-clock-divisor: the integer clock divisor for clkman
++- dmas: the dma controller phandle and the DREQ number (4 on a 2835)
++- dma-names: the name used by the driver to request its channel.
++  Should be "rx-tx".
++
++Optional properties:
++- None.
++
++Examples:
++
++8 data pin configuration:
++
++smi: smi@7e600000 {
++	compatible = "brcm,bcm2835-smi";
++	reg = <0x7e600000 0x44>, <0x7e1010b0 0x8>;
++	interrupts = <2 16>;
++	pinctrl-names = "default";
++	pinctrl-0 = <&smi_pins>;
++	brcm,smi-clock-source = <6>;
++	brcm,smi-clock-divisor = <4>;
++	dmas = <&dma 4>;
++	dma-names = "rx-tx";
++
++	status = "okay";
++};
++
++smi_pins: smi_pins {
++	brcm,pins = <2 3 4 5 6 7 8 9 10 11 12 13 14 15>;
++	/* Alt 1: SMI */
++	brcm,function = <5 5 5 5 5 5 5 5 5 5 5 5 5 5>;
++	/* /CS, /WE and /OE are pulled high, as they are
++	   generally active low signals */
++	brcm,pull = <2 2 2 2 2 2 0 0 0 0 0 0 0 0>;
++};
++
+--- a/drivers/char/broadcom/Kconfig
++++ b/drivers/char/broadcom/Kconfig
+@@ -24,3 +24,12 @@ config BCM2835_DEVGPIOMEM
+ 		Provides users with root-free access to the GPIO registers
+ 		on the 2835. Calling mmap(/dev/gpiomem) will map the GPIO
+ 		register page to the user's pointer.
++
++config BCM2835_SMI_DEV
++	tristate "Character device driver for BCM2835 Secondary Memory Interface"
++	depends on BCM2835_SMI
++	default m
++	help
++		This driver provides a character device interface (ioctl + read/write) to
++		Broadcom's Secondary Memory interface. The low-level functionality is provided
++		by the SMI driver itself.
+--- a/drivers/char/broadcom/Makefile
++++ b/drivers/char/broadcom/Makefile
+@@ -1,2 +1,3 @@
+ obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
+ obj-$(CONFIG_BCM2835_DEVGPIOMEM)+= bcm2835-gpiomem.o
++obj-$(CONFIG_BCM2835_SMI_DEV)	+= bcm2835_smi_dev.o
+--- /dev/null
++++ b/drivers/char/broadcom/bcm2835_smi_dev.c
+@@ -0,0 +1,402 @@
++/**
++ * Character device driver for Broadcom Secondary Memory Interface
++ *
++ * Written by Luke Wren <luke@raspberrypi.org>
++ * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2, as published by the Free
++ * Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <linux/mm.h>
++#include <linux/pagemap.h>
++#include <linux/fs.h>
++#include <linux/cdev.h>
++#include <linux/fs.h>
++
++#include <linux/broadcom/bcm2835_smi.h>
++
++#define DEVICE_NAME "bcm2835-smi-dev"
++#define DRIVER_NAME "smi-dev-bcm2835"
++#define DEVICE_MINOR 0
++
++static struct cdev bcm2835_smi_cdev;
++static dev_t bcm2835_smi_devid;
++static struct class *bcm2835_smi_class;
++static struct device *bcm2835_smi_dev;
++
++struct bcm2835_smi_dev_instance {
++	struct device *dev;
++};
++
++static struct bcm2835_smi_instance *smi_inst;
++static struct bcm2835_smi_dev_instance *inst;
++
++static const char *const ioctl_names[] = {
++	"READ_SETTINGS",
++	"WRITE_SETTINGS",
++	"ADDRESS"
++};
++
++/****************************************************************************
++*
++*   SMI chardev file ops
++*
++***************************************************************************/
++static long
++bcm2835_smi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
++{
++	long ret = 0;
++
++	dev_info(inst->dev, "serving ioctl...");
++
++	switch (cmd) {
++	case BCM2835_SMI_IOC_GET_SETTINGS:{
++		struct smi_settings *settings;
++
++		dev_info(inst->dev, "Reading SMI settings to user.");
++		settings = bcm2835_smi_get_settings_from_regs(smi_inst);
++		if (copy_to_user((void *)arg, settings,
++				 sizeof(struct smi_settings)))
++			dev_err(inst->dev, "settings copy failed.");
++		break;
++	}
++	case BCM2835_SMI_IOC_WRITE_SETTINGS:{
++		struct smi_settings *settings;
++
++		dev_info(inst->dev, "Setting user's SMI settings.");
++		settings = bcm2835_smi_get_settings_from_regs(smi_inst);
++		if (copy_from_user(settings, (void *)arg,
++				   sizeof(struct smi_settings)))
++			dev_err(inst->dev, "settings copy failed.");
++		else
++			bcm2835_smi_set_regs_from_settings(smi_inst);
++		break;
++	}
++	case BCM2835_SMI_IOC_ADDRESS:
++		dev_info(inst->dev, "SMI address set: 0x%02x", (int)arg);
++		bcm2835_smi_set_address(smi_inst, arg);
++		break;
++	default:
++		dev_err(inst->dev, "invalid ioctl cmd: %d", cmd);
++		ret = -ENOTTY;
++		break;
++	}
++
++	return ret;
++}
++
++static int bcm2835_smi_open(struct inode *inode, struct file *file)
++{
++	int dev = iminor(inode);
++
++	dev_dbg(inst->dev, "SMI device opened.");
++
++	if (dev != DEVICE_MINOR) {
++		dev_err(inst->dev,
++			"bcm2835_smi_release: Unknown minor device: %d",
++			dev);
++		return -ENXIO;
++	}
++
++	return 0;
++}
++
++static int bcm2835_smi_release(struct inode *inode, struct file *file)
++{
++	int dev = iminor(inode);
++
++	if (dev != DEVICE_MINOR) {
++		dev_err(inst->dev,
++			"bcm2835_smi_release: Unknown minor device %d", dev);
++		return -ENXIO;
++	}
++
++	return 0;
++}
++
++static ssize_t dma_bounce_user(
++	enum dma_transfer_direction dma_dir,
++	char __user *user_ptr,
++	size_t count,
++	struct bcm2835_smi_bounce_info *bounce)
++{
++	int chunk_size;
++	int chunk_no = 0;
++	int count_left = count;
++
++	while (count_left) {
++		int rv;
++		void *buf;
++
++		/* Wait for current chunk to complete: */
++		if (down_timeout(&bounce->callback_sem,
++			msecs_to_jiffies(1000))) {
++			dev_err(inst->dev, "DMA bounce timed out");
++			count -= (count_left);
++			break;
++		}
++
++		if (bounce->callback_sem.count >= DMA_BOUNCE_BUFFER_COUNT - 1)
++			dev_err(inst->dev, "WARNING: Ring buffer overflow");
++		chunk_size = count_left > DMA_BOUNCE_BUFFER_SIZE ?
++			DMA_BOUNCE_BUFFER_SIZE : count_left;
++		buf = bounce->buffer[chunk_no % DMA_BOUNCE_BUFFER_COUNT];
++		if (dma_dir == DMA_DEV_TO_MEM)
++			rv = copy_to_user(user_ptr, buf, chunk_size);
++		else
++			rv = copy_from_user(buf, user_ptr, chunk_size);
++		if (rv)
++			dev_err(inst->dev, "copy_*_user() failed!: %d", rv);
++		user_ptr += chunk_size;
++		count_left -= chunk_size;
++		chunk_no++;
++	}
++	return count;
++}
++
++static ssize_t
++bcm2835_read_file(struct file *f, char __user *user_ptr,
++		  size_t count, loff_t *offs)
++{
++	int odd_bytes;
++
++	dev_dbg(inst->dev, "User reading %zu bytes from SMI.", count);
++	/* We don't want to DMA a number of bytes % 4 != 0 (32 bit FIFO) */
++	if (count > DMA_THRESHOLD_BYTES)
++		odd_bytes = count & 0x3;
++	else
++		odd_bytes = count;
++	count -= odd_bytes;
++	if (count) {
++		struct bcm2835_smi_bounce_info *bounce;
++
++		count = bcm2835_smi_user_dma(smi_inst,
++			DMA_DEV_TO_MEM, user_ptr, count,
++			&bounce);
++		if (count)
++			count = dma_bounce_user(DMA_DEV_TO_MEM, user_ptr,
++				count, bounce);
++	}
++	if (odd_bytes) {
++		/* Read from FIFO directly if not using DMA */
++		uint8_t buf[DMA_THRESHOLD_BYTES];
++
++		bcm2835_smi_read_buf(smi_inst, buf, odd_bytes);
++		if (copy_to_user(user_ptr, buf, odd_bytes))
++			dev_err(inst->dev, "copy_to_user() failed.");
++		count += odd_bytes;
++
++	}
++	return count;
++}
++
++static ssize_t
++bcm2835_write_file(struct file *f, const char __user *user_ptr,
++		   size_t count, loff_t *offs)
++{
++	int odd_bytes;
++
++	dev_dbg(inst->dev, "User writing %zu bytes to SMI.", count);
++	if (count > DMA_THRESHOLD_BYTES)
++		odd_bytes = count & 0x3;
++	else
++		odd_bytes = count;
++	count -= odd_bytes;
++	if (count) {
++		struct bcm2835_smi_bounce_info *bounce;
++
++		count = bcm2835_smi_user_dma(smi_inst,
++			DMA_MEM_TO_DEV, (char __user *)user_ptr, count,
++			&bounce);
++		if (count)
++			count = dma_bounce_user(DMA_MEM_TO_DEV,
++				(char __user *)user_ptr,
++				count, bounce);
++	}
++	if (odd_bytes) {
++		uint8_t buf[DMA_THRESHOLD_BYTES];
++
++		if (copy_from_user(buf, user_ptr, odd_bytes))
++			dev_err(inst->dev, "copy_from_user() failed.");
++		else
++			bcm2835_smi_write_buf(smi_inst, buf, odd_bytes);
++		count += odd_bytes;
++	}
++	return count;
++}
++
++static const struct file_operations
++bcm2835_smi_fops = {
++	.owner = THIS_MODULE,
++	.unlocked_ioctl = bcm2835_smi_ioctl,
++	.open = bcm2835_smi_open,
++	.release = bcm2835_smi_release,
++	.read = bcm2835_read_file,
++	.write = bcm2835_write_file,
++};
++
++
++/****************************************************************************
++*
++*   bcm2835_smi_probe - called when the driver is loaded.
++*
++***************************************************************************/
++
++static int bcm2835_smi_dev_probe(struct platform_device *pdev)
++{
++	int err;
++	void *ptr_err;
++	struct device *dev = &pdev->dev;
++	struct device_node *node = dev->of_node, *smi_node;
++
++	if (!node) {
++		dev_err(dev, "No device tree node supplied!");
++		return -EINVAL;
++	}
++
++	smi_node = of_parse_phandle(node, "smi_handle", 0);
++
++	if (!smi_node) {
++		dev_err(dev, "No such property: smi_handle");
++		return -ENXIO;
++	}
++
++	smi_inst = bcm2835_smi_get(smi_node);
++
++	if (!smi_inst)
++		return -EPROBE_DEFER;
++
++	/* Allocate buffers and instance data */
++
++	inst = devm_kzalloc(dev, sizeof(*inst), GFP_KERNEL);
++
++	if (!inst)
++		return -ENOMEM;
++
++	inst->dev = dev;
++
++	/* Create character device entries */
++
++	err = alloc_chrdev_region(&bcm2835_smi_devid,
++				  DEVICE_MINOR, 1, DEVICE_NAME);
++	if (err != 0) {
++		dev_err(inst->dev, "unable to allocate device number");
++		return -ENOMEM;
++	}
++	cdev_init(&bcm2835_smi_cdev, &bcm2835_smi_fops);
++	bcm2835_smi_cdev.owner = THIS_MODULE;
++	err = cdev_add(&bcm2835_smi_cdev, bcm2835_smi_devid, 1);
++	if (err != 0) {
++		dev_err(inst->dev, "unable to register device");
++		err = -ENOMEM;
++		goto failed_cdev_add;
++	}
++
++	/* Create sysfs entries */
++
++	bcm2835_smi_class = class_create(THIS_MODULE, DEVICE_NAME);
++	ptr_err = bcm2835_smi_class;
++	if (IS_ERR(ptr_err))
++		goto failed_class_create;
++
++	bcm2835_smi_dev = device_create(bcm2835_smi_class, NULL,
++					bcm2835_smi_devid, NULL,
++					"smi");
++	ptr_err = bcm2835_smi_dev;
++	if (IS_ERR(ptr_err))
++		goto failed_device_create;
++
++	dev_info(inst->dev, "initialised");
++
++	return 0;
++
++failed_device_create:
++	class_destroy(bcm2835_smi_class);
++failed_class_create:
++	cdev_del(&bcm2835_smi_cdev);
++	err = PTR_ERR(ptr_err);
++failed_cdev_add:
++	unregister_chrdev_region(bcm2835_smi_devid, 1);
++	dev_err(dev, "could not load bcm2835_smi_dev");
++	return err;
++}
++
++/****************************************************************************
++*
++*   bcm2835_smi_remove - called when the driver is unloaded.
++*
++***************************************************************************/
++
++static int bcm2835_smi_dev_remove(struct platform_device *pdev)
++{
++	device_destroy(bcm2835_smi_class, bcm2835_smi_devid);
++	class_destroy(bcm2835_smi_class);
++	cdev_del(&bcm2835_smi_cdev);
++	unregister_chrdev_region(bcm2835_smi_devid, 1);
++
++	dev_info(inst->dev, "SMI character dev removed - OK");
++	return 0;
++}
++
++/****************************************************************************
++*
++*   Register the driver with device tree
++*
++***************************************************************************/
++
++static const struct of_device_id bcm2835_smi_dev_of_match[] = {
++	{.compatible = "brcm,bcm2835-smi-dev",},
++	{ /* sentinel */ },
++};
++
++MODULE_DEVICE_TABLE(of, bcm2835_smi_dev_of_match);
++
++static struct platform_driver bcm2835_smi_dev_driver = {
++	.probe = bcm2835_smi_dev_probe,
++	.remove = bcm2835_smi_dev_remove,
++	.driver = {
++		   .name = DRIVER_NAME,
++		   .owner = THIS_MODULE,
++		   .of_match_table = bcm2835_smi_dev_of_match,
++		   },
++};
++
++module_platform_driver(bcm2835_smi_dev_driver);
++
++MODULE_ALIAS("platform:smi-dev-bcm2835");
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION(
++	"Character device driver for BCM2835's secondary memory interface");
++MODULE_AUTHOR("Luke Wren <luke@raspberrypi.org>");
+--- a/drivers/misc/Kconfig
++++ b/drivers/misc/Kconfig
+@@ -9,6 +9,14 @@ config SENSORS_LIS3LV02D
+ 	tristate
+ 	depends on INPUT
+ 
++config BCM2835_SMI
++	tristate "Broadcom 283x Secondary Memory Interface driver"
++	depends on ARCH_BCM2835
++	default m
++	help
++		Driver for enabling and using Broadcom's Secondary/Slow Memory Interface.
++		Appears as /dev/bcm2835_smi. For ioctl interface see drivers/misc/bcm2835_smi.h
++
+ config AD525X_DPOT
+ 	tristate "Analog Devices Digital Potentiometers"
+ 	depends on (I2C || SPI) && SYSFS
+--- a/drivers/misc/Makefile
++++ b/drivers/misc/Makefile
+@@ -9,6 +9,7 @@ obj-$(CONFIG_AD525X_DPOT)	+= ad525x_dpot
+ obj-$(CONFIG_AD525X_DPOT_I2C)	+= ad525x_dpot-i2c.o
+ obj-$(CONFIG_AD525X_DPOT_SPI)	+= ad525x_dpot-spi.o
+ obj-$(CONFIG_ATMEL_SSC)		+= atmel-ssc.o
++obj-$(CONFIG_BCM2835_SMI)	+= bcm2835_smi.o
+ obj-$(CONFIG_DUMMY_IRQ)		+= dummy-irq.o
+ obj-$(CONFIG_ICS932S401)	+= ics932s401.o
+ obj-$(CONFIG_LKDTM)		+= lkdtm/
+--- /dev/null
++++ b/drivers/misc/bcm2835_smi.c
+@@ -0,0 +1,955 @@
++/**
++ * Broadcom Secondary Memory Interface driver
++ *
++ * Written by Luke Wren <luke@raspberrypi.org>
++ * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2, as published by the Free
++ * Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++#include <linux/clk.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/of_address.h>
++#include <linux/of_platform.h>
++#include <linux/mm.h>
++#include <linux/slab.h>
++#include <linux/pagemap.h>
++#include <linux/dma-mapping.h>
++#include <linux/dmaengine.h>
++#include <linux/semaphore.h>
++#include <linux/spinlock.h>
++#include <linux/io.h>
++
++#define BCM2835_SMI_IMPLEMENTATION
++#include <linux/broadcom/bcm2835_smi.h>
++
++#define DRIVER_NAME "smi-bcm2835"
++
++#define N_PAGES_FROM_BYTES(n) ((n + PAGE_SIZE-1) / PAGE_SIZE)
++
++#define DMA_WRITE_TO_MEM true
++#define DMA_READ_FROM_MEM false
++
++struct bcm2835_smi_instance {
++	struct device *dev;
++	struct smi_settings settings;
++	__iomem void *smi_regs_ptr;
++	dma_addr_t smi_regs_busaddr;
++
++	struct dma_chan *dma_chan;
++	struct dma_slave_config dma_config;
++
++	struct bcm2835_smi_bounce_info bounce;
++
++	struct scatterlist buffer_sgl;
++
++	struct clk *clk;
++
++	/* Sometimes we are called into in an atomic context (e.g. by
++	   JFFS2 + MTD) so we can't use a mutex */
++	spinlock_t transaction_lock;
++};
++
++/****************************************************************************
++*
++*   SMI peripheral setup
++*
++***************************************************************************/
++
++static inline void write_smi_reg(struct bcm2835_smi_instance *inst,
++	u32 val, unsigned reg)
++{
++	writel(val, inst->smi_regs_ptr + reg);
++}
++
++static inline u32 read_smi_reg(struct bcm2835_smi_instance *inst, unsigned reg)
++{
++	return readl(inst->smi_regs_ptr + reg);
++}
++
++/* Token-paste macro for e.g SMIDSR_RSTROBE ->  value of SMIDSR_RSTROBE_MASK */
++#define _CONCAT(x, y) x##y
++#define CONCAT(x, y) _CONCAT(x, y)
++
++#define SET_BIT_FIELD(dest, field, bits) ((dest) = \
++	((dest) & ~CONCAT(field, _MASK)) | (((bits) << CONCAT(field, _OFFS))& \
++	 CONCAT(field, _MASK)))
++#define GET_BIT_FIELD(src, field) (((src) & \
++	CONCAT(field, _MASK)) >> CONCAT(field, _OFFS))
++
++static void smi_dump_context_labelled(struct bcm2835_smi_instance *inst,
++	const char *label)
++{
++	dev_err(inst->dev, "SMI context dump: %s", label);
++	dev_err(inst->dev, "SMICS:  0x%08x", read_smi_reg(inst, SMICS));
++	dev_err(inst->dev, "SMIL:   0x%08x", read_smi_reg(inst, SMIL));
++	dev_err(inst->dev, "SMIDSR: 0x%08x", read_smi_reg(inst, SMIDSR0));
++	dev_err(inst->dev, "SMIDSW: 0x%08x", read_smi_reg(inst, SMIDSW0));
++	dev_err(inst->dev, "SMIDC:  0x%08x", read_smi_reg(inst, SMIDC));
++	dev_err(inst->dev, "SMIFD:  0x%08x", read_smi_reg(inst, SMIFD));
++	dev_err(inst->dev, " ");
++}
++
++static inline void smi_dump_context(struct bcm2835_smi_instance *inst)
++{
++	smi_dump_context_labelled(inst, "");
++}
++
++static void smi_get_default_settings(struct bcm2835_smi_instance *inst)
++{
++	struct smi_settings *settings = &inst->settings;
++
++	settings->data_width = SMI_WIDTH_16BIT;
++	settings->pack_data = true;
++
++	settings->read_setup_time = 1;
++	settings->read_hold_time = 1;
++	settings->read_pace_time = 1;
++	settings->read_strobe_time = 3;
++
++	settings->write_setup_time = settings->read_setup_time;
++	settings->write_hold_time = settings->read_hold_time;
++	settings->write_pace_time = settings->read_pace_time;
++	settings->write_strobe_time = settings->read_strobe_time;
++
++	settings->dma_enable = true;
++	settings->dma_passthrough_enable = false;
++	settings->dma_read_thresh = 0x01;
++	settings->dma_write_thresh = 0x3f;
++	settings->dma_panic_read_thresh = 0x20;
++	settings->dma_panic_write_thresh = 0x20;
++}
++
++void bcm2835_smi_set_regs_from_settings(struct bcm2835_smi_instance *inst)
++{
++	struct smi_settings *settings = &inst->settings;
++	int smidsr_temp = 0, smidsw_temp = 0, smics_temp,
++	    smidcs_temp, smidc_temp = 0;
++
++	spin_lock(&inst->transaction_lock);
++
++	/* temporarily disable the peripheral: */
++	smics_temp = read_smi_reg(inst, SMICS);
++	write_smi_reg(inst, 0, SMICS);
++	smidcs_temp = read_smi_reg(inst, SMIDCS);
++	write_smi_reg(inst, 0, SMIDCS);
++
++	if (settings->pack_data)
++		smics_temp |= SMICS_PXLDAT;
++	else
++		smics_temp &= ~SMICS_PXLDAT;
++
++	SET_BIT_FIELD(smidsr_temp, SMIDSR_RWIDTH, settings->data_width);
++	SET_BIT_FIELD(smidsr_temp, SMIDSR_RSETUP, settings->read_setup_time);
++	SET_BIT_FIELD(smidsr_temp, SMIDSR_RHOLD, settings->read_hold_time);
++	SET_BIT_FIELD(smidsr_temp, SMIDSR_RPACE, settings->read_pace_time);
++	SET_BIT_FIELD(smidsr_temp, SMIDSR_RSTROBE, settings->read_strobe_time);
++	write_smi_reg(inst, smidsr_temp, SMIDSR0);
++
++	SET_BIT_FIELD(smidsw_temp, SMIDSW_WWIDTH, settings->data_width);
++	if (settings->data_width == SMI_WIDTH_8BIT)
++		smidsw_temp |= SMIDSW_WSWAP;
++	else
++		smidsw_temp &= ~SMIDSW_WSWAP;
++	SET_BIT_FIELD(smidsw_temp, SMIDSW_WSETUP, settings->write_setup_time);
++	SET_BIT_FIELD(smidsw_temp, SMIDSW_WHOLD, settings->write_hold_time);
++	SET_BIT_FIELD(smidsw_temp, SMIDSW_WPACE, settings->write_pace_time);
++	SET_BIT_FIELD(smidsw_temp, SMIDSW_WSTROBE,
++			settings->write_strobe_time);
++	write_smi_reg(inst, smidsw_temp, SMIDSW0);
++
++	SET_BIT_FIELD(smidc_temp, SMIDC_REQR, settings->dma_read_thresh);
++	SET_BIT_FIELD(smidc_temp, SMIDC_REQW, settings->dma_write_thresh);
++	SET_BIT_FIELD(smidc_temp, SMIDC_PANICR,
++		      settings->dma_panic_read_thresh);
++	SET_BIT_FIELD(smidc_temp, SMIDC_PANICW,
++		      settings->dma_panic_write_thresh);
++	if (settings->dma_passthrough_enable) {
++		smidc_temp |= SMIDC_DMAP;
++		smidsr_temp |= SMIDSR_RDREQ;
++		write_smi_reg(inst, smidsr_temp, SMIDSR0);
++		smidsw_temp |= SMIDSW_WDREQ;
++		write_smi_reg(inst, smidsw_temp, SMIDSW0);
++	} else
++		smidc_temp &= ~SMIDC_DMAP;
++	if (settings->dma_enable)
++		smidc_temp |= SMIDC_DMAEN;
++	else
++		smidc_temp &= ~SMIDC_DMAEN;
++
++	write_smi_reg(inst, smidc_temp, SMIDC);
++
++	/* re-enable (if was previously enabled) */
++	write_smi_reg(inst, smics_temp, SMICS);
++	write_smi_reg(inst, smidcs_temp, SMIDCS);
++
++	spin_unlock(&inst->transaction_lock);
++}
++EXPORT_SYMBOL(bcm2835_smi_set_regs_from_settings);
++
++struct smi_settings *bcm2835_smi_get_settings_from_regs
++	(struct bcm2835_smi_instance *inst)
++{
++	struct smi_settings *settings = &inst->settings;
++	int smidsr, smidsw, smidc;
++
++	spin_lock(&inst->transaction_lock);
++
++	smidsr = read_smi_reg(inst, SMIDSR0);
++	smidsw = read_smi_reg(inst, SMIDSW0);
++	smidc = read_smi_reg(inst, SMIDC);
++
++	settings->pack_data = (read_smi_reg(inst, SMICS) & SMICS_PXLDAT) ?
++	    true : false;
++
++	settings->data_width = GET_BIT_FIELD(smidsr, SMIDSR_RWIDTH);
++	settings->read_setup_time = GET_BIT_FIELD(smidsr, SMIDSR_RSETUP);
++	settings->read_hold_time = GET_BIT_FIELD(smidsr, SMIDSR_RHOLD);
++	settings->read_pace_time = GET_BIT_FIELD(smidsr, SMIDSR_RPACE);
++	settings->read_strobe_time = GET_BIT_FIELD(smidsr, SMIDSR_RSTROBE);
++
++	settings->write_setup_time = GET_BIT_FIELD(smidsw, SMIDSW_WSETUP);
++	settings->write_hold_time = GET_BIT_FIELD(smidsw, SMIDSW_WHOLD);
++	settings->write_pace_time = GET_BIT_FIELD(smidsw, SMIDSW_WPACE);
++	settings->write_strobe_time = GET_BIT_FIELD(smidsw, SMIDSW_WSTROBE);
++
++	settings->dma_read_thresh = GET_BIT_FIELD(smidc, SMIDC_REQR);
++	settings->dma_write_thresh = GET_BIT_FIELD(smidc, SMIDC_REQW);
++	settings->dma_panic_read_thresh = GET_BIT_FIELD(smidc, SMIDC_PANICR);
++	settings->dma_panic_write_thresh = GET_BIT_FIELD(smidc, SMIDC_PANICW);
++	settings->dma_passthrough_enable = (smidc & SMIDC_DMAP) ? true : false;
++	settings->dma_enable = (smidc & SMIDC_DMAEN) ? true : false;
++
++	spin_unlock(&inst->transaction_lock);
++
++	return settings;
++}
++EXPORT_SYMBOL(bcm2835_smi_get_settings_from_regs);
++
++static inline void smi_set_address(struct bcm2835_smi_instance *inst,
++	unsigned int address)
++{
++	int smia_temp = 0, smida_temp = 0;
++
++	SET_BIT_FIELD(smia_temp, SMIA_ADDR, address);
++	SET_BIT_FIELD(smida_temp, SMIDA_ADDR, address);
++
++	/* Write to both address registers - user doesn't care whether we're
++	   doing programmed or direct transfers. */
++	write_smi_reg(inst, smia_temp, SMIA);
++	write_smi_reg(inst, smida_temp, SMIDA);
++}
++
++static void smi_setup_regs(struct bcm2835_smi_instance *inst)
++{
++
++	dev_dbg(inst->dev, "Initialising SMI registers...");
++	/* Disable the peripheral if already enabled */
++	write_smi_reg(inst, 0, SMICS);
++	write_smi_reg(inst, 0, SMIDCS);
++
++	smi_get_default_settings(inst);
++	bcm2835_smi_set_regs_from_settings(inst);
++	smi_set_address(inst, 0);
++
++	write_smi_reg(inst, read_smi_reg(inst, SMICS) | SMICS_ENABLE, SMICS);
++	write_smi_reg(inst, read_smi_reg(inst, SMIDCS) | SMIDCS_ENABLE,
++		SMIDCS);
++}
++
++/****************************************************************************
++*
++*   Low-level SMI access functions
++*   Other modules should use the exported higher-level functions e.g.
++*   bcm2835_smi_write_buf() unless they have a good reason to use these
++*
++***************************************************************************/
++
++static inline uint32_t smi_read_single_word(struct bcm2835_smi_instance *inst)
++{
++	int timeout = 0;
++
++	write_smi_reg(inst, SMIDCS_ENABLE, SMIDCS);
++	write_smi_reg(inst, SMIDCS_ENABLE | SMIDCS_START, SMIDCS);
++	/* Make sure things happen in the right order...*/
++	mb();
++	while (!(read_smi_reg(inst, SMIDCS) & SMIDCS_DONE) &&
++		++timeout < 10000)
++		;
++	if (timeout < 10000)
++		return read_smi_reg(inst, SMIDD);
++
++	dev_err(inst->dev,
++		"SMI direct read timed out (is the clock set up correctly?)");
++	return 0;
++}
++
++static inline void smi_write_single_word(struct bcm2835_smi_instance *inst,
++	uint32_t data)
++{
++	int timeout = 0;
++
++	write_smi_reg(inst, SMIDCS_ENABLE | SMIDCS_WRITE, SMIDCS);
++	write_smi_reg(inst, data, SMIDD);
++	write_smi_reg(inst, SMIDCS_ENABLE | SMIDCS_WRITE | SMIDCS_START,
++		SMIDCS);
++
++	while (!(read_smi_reg(inst, SMIDCS) & SMIDCS_DONE) &&
++		++timeout < 10000)
++		;
++	if (timeout >= 10000)
++		dev_err(inst->dev,
++		"SMI direct write timed out (is the clock set up correctly?)");
++}
++
++/* Initiates a programmed read into the read FIFO. It is up to the caller to
++ * read data from the FIFO -  either via paced DMA transfer,
++ * or polling SMICS_RXD to check whether data is available.
++ * SMICS_ACTIVE will go low upon completion. */
++static void smi_init_programmed_read(struct bcm2835_smi_instance *inst,
++	int num_transfers)
++{
++	int smics_temp;
++
++	/* Disable the peripheral: */
++	smics_temp = read_smi_reg(inst, SMICS) & ~(SMICS_ENABLE | SMICS_WRITE);
++	write_smi_reg(inst, smics_temp, SMICS);
++	while (read_smi_reg(inst, SMICS) & SMICS_ENABLE)
++		;
++
++	/* Program the transfer count: */
++	write_smi_reg(inst, num_transfers, SMIL);
++
++	/* re-enable and start: */
++	smics_temp |= SMICS_ENABLE;
++	write_smi_reg(inst, smics_temp, SMICS);
++	smics_temp |= SMICS_CLEAR;
++	/* Just to be certain: */
++	mb();
++	while (read_smi_reg(inst, SMICS) & SMICS_ACTIVE)
++		;
++	write_smi_reg(inst, smics_temp, SMICS);
++	smics_temp |= SMICS_START;
++	write_smi_reg(inst, smics_temp, SMICS);
++}
++
++/* Initiates a programmed write sequence, using data from the write FIFO.
++ * It is up to the caller to initiate a DMA transfer before calling,
++ * or use another method to keep the write FIFO topped up.
++ * SMICS_ACTIVE will go low upon completion.
++ */
++static void smi_init_programmed_write(struct bcm2835_smi_instance *inst,
++	int num_transfers)
++{
++	int smics_temp;
++
++	/* Disable the peripheral: */
++	smics_temp = read_smi_reg(inst, SMICS) & ~SMICS_ENABLE;
++	write_smi_reg(inst, smics_temp, SMICS);
++	while (read_smi_reg(inst, SMICS) & SMICS_ENABLE)
++		;
++
++	/* Program the transfer count: */
++	write_smi_reg(inst, num_transfers, SMIL);
++
++	/* setup, re-enable and start: */
++	smics_temp |= SMICS_WRITE | SMICS_ENABLE;
++	write_smi_reg(inst, smics_temp, SMICS);
++	smics_temp |= SMICS_START;
++	write_smi_reg(inst, smics_temp, SMICS);
++}
++
++/* Initiate a read and then poll FIFO for data, reading out as it appears. */
++static void smi_read_fifo(struct bcm2835_smi_instance *inst,
++	uint32_t *dest, int n_bytes)
++{
++	if (read_smi_reg(inst, SMICS) & SMICS_RXD) {
++		smi_dump_context_labelled(inst,
++			"WARNING: read FIFO not empty at start of read call.");
++		while (read_smi_reg(inst, SMICS))
++			;
++	}
++
++	/* Dispatch the read: */
++	if (inst->settings.data_width == SMI_WIDTH_8BIT)
++		smi_init_programmed_read(inst, n_bytes);
++	else if (inst->settings.data_width == SMI_WIDTH_16BIT)
++		smi_init_programmed_read(inst, n_bytes / 2);
++	else {
++		dev_err(inst->dev, "Unsupported data width for read.");
++		return;
++	}
++
++	/* Poll FIFO to keep it empty */
++	while (!(read_smi_reg(inst, SMICS) & SMICS_DONE))
++		if (read_smi_reg(inst, SMICS) & SMICS_RXD)
++			*dest++ = read_smi_reg(inst, SMID);
++
++	/* Ensure that the FIFO is emptied */
++	if (read_smi_reg(inst, SMICS) & SMICS_RXD) {
++		int fifo_count;
++
++		fifo_count = GET_BIT_FIELD(read_smi_reg(inst, SMIFD),
++			SMIFD_FCNT);
++		while (fifo_count--)
++			*dest++ = read_smi_reg(inst, SMID);
++	}
++
++	if (!(read_smi_reg(inst, SMICS) & SMICS_DONE))
++		smi_dump_context_labelled(inst,
++			"WARNING: transaction finished but done bit not set.");
++
++	if (read_smi_reg(inst, SMICS) & SMICS_RXD)
++		smi_dump_context_labelled(inst,
++			"WARNING: read FIFO not empty at end of read call.");
++
++}
++
++/* Initiate a write, and then keep the FIFO topped up. */
++static void smi_write_fifo(struct bcm2835_smi_instance *inst,
++	uint32_t *src, int n_bytes)
++{
++	int i, timeout = 0;
++
++	/* Empty FIFOs if not already so */
++	if (!(read_smi_reg(inst, SMICS) & SMICS_TXE)) {
++		smi_dump_context_labelled(inst,
++		    "WARNING: write fifo not empty at start of write call.");
++		write_smi_reg(inst, read_smi_reg(inst, SMICS) | SMICS_CLEAR,
++			SMICS);
++	}
++
++	/* Initiate the transfer */
++	if (inst->settings.data_width == SMI_WIDTH_8BIT)
++		smi_init_programmed_write(inst, n_bytes);
++	else if (inst->settings.data_width == SMI_WIDTH_16BIT)
++		smi_init_programmed_write(inst, n_bytes / 2);
++	else {
++		dev_err(inst->dev, "Unsupported data width for write.");
++		return;
++	}
++	/* Fill the FIFO: */
++	for (i = 0; i < (n_bytes - 1) / 4 + 1; ++i) {
++		while (!(read_smi_reg(inst, SMICS) & SMICS_TXD))
++			;
++		write_smi_reg(inst, *src++, SMID);
++	}
++	/* Busy wait... */
++	while (!(read_smi_reg(inst, SMICS) & SMICS_DONE) && ++timeout <
++		1000000)
++		;
++	if (timeout >= 1000000)
++		smi_dump_context_labelled(inst,
++			"Timed out on write operation!");
++	if (!(read_smi_reg(inst, SMICS) & SMICS_TXE))
++		smi_dump_context_labelled(inst,
++			"WARNING: FIFO not empty at end of write operation.");
++}
++
++/****************************************************************************
++*
++*   SMI DMA operations
++*
++***************************************************************************/
++
++/* Disable SMI and put it into the correct direction before doing DMA setup.
++   Stops spurious DREQs during setup. Peripheral is re-enabled by init_*() */
++static void smi_disable(struct bcm2835_smi_instance *inst,
++	enum dma_transfer_direction direction)
++{
++	int smics_temp = read_smi_reg(inst, SMICS) & ~SMICS_ENABLE;
++
++	if (direction == DMA_DEV_TO_MEM)
++		smics_temp &= ~SMICS_WRITE;
++	else
++		smics_temp |= SMICS_WRITE;
++	write_smi_reg(inst, smics_temp, SMICS);
++	while (read_smi_reg(inst, SMICS) & SMICS_ACTIVE)
++		;
++}
++
++static struct scatterlist *smi_scatterlist_from_buffer(
++	struct bcm2835_smi_instance *inst,
++	dma_addr_t buf,
++	size_t len,
++	struct scatterlist *sg)
++{
++	sg_init_table(sg, 1);
++	sg_dma_address(sg) = buf;
++	sg_dma_len(sg) = len;
++	return sg;
++}
++
++static void smi_dma_callback_user_copy(void *param)
++{
++	/* Notify the bottom half that a chunk is ready for user copy */
++	struct bcm2835_smi_instance *inst =
++		(struct bcm2835_smi_instance *)param;
++
++	up(&inst->bounce.callback_sem);
++}
++
++/* Creates a descriptor, assigns the given callback, and submits the
++   descriptor to dmaengine. Does not block - can queue up multiple
++   descriptors and then wait for them all to complete.
++   sg_len is the number of control blocks, NOT the number of bytes.
++   dir can be DMA_MEM_TO_DEV or DMA_DEV_TO_MEM.
++   callback can be NULL - in this case it is not called. */
++static inline struct dma_async_tx_descriptor *smi_dma_submit_sgl(
++	struct bcm2835_smi_instance *inst,
++	struct scatterlist *sgl,
++	size_t sg_len,
++	enum dma_transfer_direction dir,
++	dma_async_tx_callback callback)
++{
++	struct dma_async_tx_descriptor *desc;
++
++	desc = dmaengine_prep_slave_sg(inst->dma_chan,
++				       sgl,
++				       sg_len,
++				       dir,
++				       DMA_PREP_INTERRUPT | DMA_CTRL_ACK |
++				       DMA_PREP_FENCE);
++	if (!desc) {
++		dev_err(inst->dev, "read_sgl: dma slave preparation failed!");
++		write_smi_reg(inst, read_smi_reg(inst, SMICS) & ~SMICS_ACTIVE,
++			SMICS);
++		while (read_smi_reg(inst, SMICS) & SMICS_ACTIVE)
++			cpu_relax();
++		write_smi_reg(inst, read_smi_reg(inst, SMICS) | SMICS_ACTIVE,
++			SMICS);
++		return NULL;
++	}
++	desc->callback = callback;
++	desc->callback_param = inst;
++	if (dmaengine_submit(desc) < 0)
++		return NULL;
++	return desc;
++}
++
++/* NB this function blocks until the transfer is complete */
++static void
++smi_dma_read_sgl(struct bcm2835_smi_instance *inst,
++	struct scatterlist *sgl, size_t sg_len, size_t n_bytes)
++{
++	struct dma_async_tx_descriptor *desc;
++
++	/* Disable SMI and set to read before dispatching DMA - if SMI is in
++	 * write mode and TX fifo is empty, it will generate a DREQ which may
++	 * cause the read DMA to complete before the SMI read command is even
++	 * dispatched! We want to dispatch DMA before SMI read so that reading
++	 * is gapless, for logic analyser.
++	 */
++
++	smi_disable(inst, DMA_DEV_TO_MEM);
++
++	desc = smi_dma_submit_sgl(inst, sgl, sg_len, DMA_DEV_TO_MEM, NULL);
++	dma_async_issue_pending(inst->dma_chan);
++
++	if (inst->settings.data_width == SMI_WIDTH_8BIT)
++		smi_init_programmed_read(inst, n_bytes);
++	else
++		smi_init_programmed_read(inst, n_bytes / 2);
++
++	if (dma_wait_for_async_tx(desc) == DMA_ERROR)
++		smi_dump_context_labelled(inst, "DMA timeout!");
++}
++
++static void
++smi_dma_write_sgl(struct bcm2835_smi_instance *inst,
++	struct scatterlist *sgl, size_t sg_len, size_t n_bytes)
++{
++	struct dma_async_tx_descriptor *desc;
++
++	if (inst->settings.data_width == SMI_WIDTH_8BIT)
++		smi_init_programmed_write(inst, n_bytes);
++	else
++		smi_init_programmed_write(inst, n_bytes / 2);
++
++	desc = smi_dma_submit_sgl(inst, sgl, sg_len, DMA_MEM_TO_DEV, NULL);
++	dma_async_issue_pending(inst->dma_chan);
++
++	if (dma_wait_for_async_tx(desc) == DMA_ERROR)
++		smi_dump_context_labelled(inst, "DMA timeout!");
++	else
++		/* Wait for SMI to finish our writes */
++		while (!(read_smi_reg(inst, SMICS) & SMICS_DONE))
++			cpu_relax();
++}
++
++ssize_t bcm2835_smi_user_dma(
++	struct bcm2835_smi_instance *inst,
++	enum dma_transfer_direction dma_dir,
++	char __user *user_ptr, size_t count,
++	struct bcm2835_smi_bounce_info **bounce)
++{
++	int chunk_no = 0, chunk_size, count_left = count;
++	struct scatterlist *sgl;
++	void (*init_trans_func)(struct bcm2835_smi_instance *, int);
++
++	spin_lock(&inst->transaction_lock);
++
++	if (dma_dir == DMA_DEV_TO_MEM)
++		init_trans_func = smi_init_programmed_read;
++	else
++		init_trans_func = smi_init_programmed_write;
++
++	smi_disable(inst, dma_dir);
++
++	sema_init(&inst->bounce.callback_sem, 0);
++	if (bounce)
++		*bounce = &inst->bounce;
++	while (count_left) {
++		chunk_size = count_left > DMA_BOUNCE_BUFFER_SIZE ?
++			DMA_BOUNCE_BUFFER_SIZE : count_left;
++		if (chunk_size == DMA_BOUNCE_BUFFER_SIZE) {
++			sgl =
++			&inst->bounce.sgl[chunk_no % DMA_BOUNCE_BUFFER_COUNT];
++		} else {
++			sgl = smi_scatterlist_from_buffer(
++				inst,
++				inst->bounce.phys[
++					chunk_no % DMA_BOUNCE_BUFFER_COUNT],
++				chunk_size,
++				&inst->buffer_sgl);
++		}
++
++		if (!smi_dma_submit_sgl(inst, sgl, 1, dma_dir,
++			smi_dma_callback_user_copy
++		)) {
++			dev_err(inst->dev, "sgl submit failed");
++			count = 0;
++			goto out;
++		}
++		count_left -= chunk_size;
++		chunk_no++;
++	}
++	dma_async_issue_pending(inst->dma_chan);
++
++	if (inst->settings.data_width == SMI_WIDTH_8BIT)
++		init_trans_func(inst, count);
++	else if (inst->settings.data_width == SMI_WIDTH_16BIT)
++		init_trans_func(inst, count / 2);
++out:
++	spin_unlock(&inst->transaction_lock);
++	return count;
++}
++EXPORT_SYMBOL(bcm2835_smi_user_dma);
++
++
++/****************************************************************************
++*
++*   High level buffer transfer functions - for use by other drivers
++*
++***************************************************************************/
++
++/* Buffer must be physically contiguous - i.e. kmalloc, not vmalloc! */
++void bcm2835_smi_write_buf(
++	struct bcm2835_smi_instance *inst,
++	const void *buf, size_t n_bytes)
++{
++	int odd_bytes = n_bytes & 0x3;
++
++	n_bytes -= odd_bytes;
++
++	spin_lock(&inst->transaction_lock);
++
++	if (n_bytes > DMA_THRESHOLD_BYTES) {
++		dma_addr_t phy_addr = dma_map_single(
++			inst->dev,
++			(void *)buf,
++			n_bytes,
++			DMA_MEM_TO_DEV);
++		struct scatterlist *sgl =
++			smi_scatterlist_from_buffer(inst, phy_addr, n_bytes,
++				&inst->buffer_sgl);
++
++		if (!sgl) {
++			smi_dump_context_labelled(inst,
++			"Error: could not create scatterlist for write!");
++			goto out;
++		}
++		smi_dma_write_sgl(inst, sgl, 1, n_bytes);
++
++		dma_unmap_single
++			(inst->dev, phy_addr, n_bytes, DMA_MEM_TO_DEV);
++	} else if (n_bytes) {
++		smi_write_fifo(inst, (uint32_t *) buf, n_bytes);
++	}
++	buf += n_bytes;
++
++	if (inst->settings.data_width == SMI_WIDTH_8BIT) {
++		while (odd_bytes--)
++			smi_write_single_word(inst, *(uint8_t *) (buf++));
++	} else {
++		while (odd_bytes >= 2) {
++			smi_write_single_word(inst, *(uint16_t *)buf);
++			buf += 2;
++			odd_bytes -= 2;
++		}
++		if (odd_bytes) {
++			/* Reading an odd number of bytes on a 16 bit bus is
++			   a user bug. It's kinder to fail early and tell them
++			   than to e.g. transparently give them the bottom byte
++			   of a 16 bit transfer. */
++			dev_err(inst->dev,
++		"WARNING: odd number of bytes specified for wide transfer.");
++			dev_err(inst->dev,
++		"At least one byte dropped as a result.");
++			dump_stack();
++		}
++	}
++out:
++	spin_unlock(&inst->transaction_lock);
++}
++EXPORT_SYMBOL(bcm2835_smi_write_buf);
++
++void bcm2835_smi_read_buf(struct bcm2835_smi_instance *inst,
++	void *buf, size_t n_bytes)
++{
++
++	/* SMI is inherently 32-bit, which causes surprising amounts of mess
++	   for bytes % 4 != 0. Easiest to avoid this mess altogether
++	   by handling remainder separately. */
++	int odd_bytes = n_bytes & 0x3;
++
++	spin_lock(&inst->transaction_lock);
++	n_bytes -= odd_bytes;
++	if (n_bytes > DMA_THRESHOLD_BYTES) {
++		dma_addr_t phy_addr = dma_map_single(inst->dev,
++						     buf, n_bytes,
++						     DMA_DEV_TO_MEM);
++		struct scatterlist *sgl = smi_scatterlist_from_buffer(
++			inst, phy_addr, n_bytes,
++			&inst->buffer_sgl);
++		if (!sgl) {
++			smi_dump_context_labelled(inst,
++			"Error: could not create scatterlist for read!");
++			goto out;
++		}
++		smi_dma_read_sgl(inst, sgl, 1, n_bytes);
++		dma_unmap_single(inst->dev, phy_addr, n_bytes, DMA_DEV_TO_MEM);
++	} else if (n_bytes) {
++		smi_read_fifo(inst, (uint32_t *)buf, n_bytes);
++	}
++	buf += n_bytes;
++
++	if (inst->settings.data_width == SMI_WIDTH_8BIT) {
++		while (odd_bytes--)
++			*((uint8_t *) (buf++)) = smi_read_single_word(inst);
++	} else {
++		while (odd_bytes >= 2) {
++			*(uint16_t *) buf = smi_read_single_word(inst);
++			buf += 2;
++			odd_bytes -= 2;
++		}
++		if (odd_bytes) {
++			dev_err(inst->dev,
++		"WARNING: odd number of bytes specified for wide transfer.");
++			dev_err(inst->dev,
++		"At least one byte dropped as a result.");
++			dump_stack();
++		}
++	}
++out:
++	spin_unlock(&inst->transaction_lock);
++}
++EXPORT_SYMBOL(bcm2835_smi_read_buf);
++
++void bcm2835_smi_set_address(struct bcm2835_smi_instance *inst,
++	unsigned int address)
++{
++	spin_lock(&inst->transaction_lock);
++	smi_set_address(inst, address);
++	spin_unlock(&inst->transaction_lock);
++}
++EXPORT_SYMBOL(bcm2835_smi_set_address);
++
++struct bcm2835_smi_instance *bcm2835_smi_get(struct device_node *node)
++{
++	struct platform_device *pdev;
++
++	if (!node)
++		return NULL;
++
++	pdev = of_find_device_by_node(node);
++	if (!pdev)
++		return NULL;
++
++	return platform_get_drvdata(pdev);
++}
++EXPORT_SYMBOL(bcm2835_smi_get);
++
++/****************************************************************************
++*
++*   bcm2835_smi_probe - called when the driver is loaded.
++*
++***************************************************************************/
++
++static int bcm2835_smi_dma_setup(struct bcm2835_smi_instance *inst)
++{
++	int i, rv = 0;
++
++	inst->dma_chan = dma_request_slave_channel(inst->dev, "rx-tx");
++
++	inst->dma_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
++	inst->dma_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
++	inst->dma_config.src_addr = inst->smi_regs_busaddr + SMID;
++	inst->dma_config.dst_addr = inst->dma_config.src_addr;
++	/* Direction unimportant - always overridden by prep_slave_sg */
++	inst->dma_config.direction = DMA_DEV_TO_MEM;
++	dmaengine_slave_config(inst->dma_chan, &inst->dma_config);
++	/* Alloc and map bounce buffers */
++	for (i = 0; i < DMA_BOUNCE_BUFFER_COUNT; ++i) {
++		inst->bounce.buffer[i] =
++		dmam_alloc_coherent(inst->dev, DMA_BOUNCE_BUFFER_SIZE,
++				&inst->bounce.phys[i],
++				GFP_KERNEL);
++		if (!inst->bounce.buffer[i]) {
++			dev_err(inst->dev, "Could not allocate buffer!");
++			rv = -ENOMEM;
++			break;
++		}
++		smi_scatterlist_from_buffer(
++			inst,
++			inst->bounce.phys[i],
++			DMA_BOUNCE_BUFFER_SIZE,
++			&inst->bounce.sgl[i]
++		);
++	}
++
++	return rv;
++}
++
++static int bcm2835_smi_probe(struct platform_device *pdev)
++{
++	int err;
++	struct device *dev = &pdev->dev;
++	struct device_node *node = dev->of_node;
++	struct resource *ioresource;
++	struct bcm2835_smi_instance *inst;
++	const __be32 *addr;
++
++	/* We require device tree support */
++	if (!node)
++		return -EINVAL;
++	/* Allocate buffers and instance data */
++	inst = devm_kzalloc(dev, sizeof(struct bcm2835_smi_instance),
++		GFP_KERNEL);
++	if (!inst)
++		return -ENOMEM;
++
++	inst->dev = dev;
++	spin_lock_init(&inst->transaction_lock);
++
++	ioresource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	inst->smi_regs_ptr = devm_ioremap_resource(dev, ioresource);
++	if (IS_ERR(inst->smi_regs_ptr)) {
++		err = PTR_ERR(inst->smi_regs_ptr);
++		goto err;
++	}
++	addr = of_get_address(node, 0, NULL, NULL);
++	inst->smi_regs_busaddr = be32_to_cpu(*addr);
++
++	err = bcm2835_smi_dma_setup(inst);
++	if (err)
++		goto err;
++
++	/* request clock */
++	inst->clk = devm_clk_get(dev, NULL);
++	if (!inst->clk)
++		goto err;
++	clk_prepare_enable(inst->clk);
++
++	/* Finally, do peripheral setup */
++	smi_setup_regs(inst);
++
++	platform_set_drvdata(pdev, inst);
++
++	dev_info(inst->dev, "initialised");
++
++	return 0;
++err:
++	kfree(inst);
++	return err;
++}
++
++/****************************************************************************
++*
++*   bcm2835_smi_remove - called when the driver is unloaded.
++*
++***************************************************************************/
++
++static int bcm2835_smi_remove(struct platform_device *pdev)
++{
++	struct bcm2835_smi_instance *inst = platform_get_drvdata(pdev);
++	struct device *dev = inst->dev;
++
++	dmaengine_terminate_all(inst->dma_chan);
++	dma_release_channel(inst->dma_chan);
++
++	clk_disable_unprepare(inst->clk);
++
++	dev_info(dev, "SMI device removed - OK");
++	return 0;
++}
++
++/****************************************************************************
++*
++*   Register the driver with device tree
++*
++***************************************************************************/
++
++static const struct of_device_id bcm2835_smi_of_match[] = {
++	{.compatible = "brcm,bcm2835-smi",},
++	{ /* sentinel */ },
++};
++
++MODULE_DEVICE_TABLE(of, bcm2835_smi_of_match);
++
++static struct platform_driver bcm2835_smi_driver = {
++	.probe = bcm2835_smi_probe,
++	.remove = bcm2835_smi_remove,
++	.driver = {
++		   .name = DRIVER_NAME,
++		   .owner = THIS_MODULE,
++		   .of_match_table = bcm2835_smi_of_match,
++		   },
++};
++
++module_platform_driver(bcm2835_smi_driver);
++
++MODULE_ALIAS("platform:smi-bcm2835");
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("Device driver for BCM2835's secondary memory interface");
++MODULE_AUTHOR("Luke Wren <luke@raspberrypi.org>");
+--- /dev/null
++++ b/include/linux/broadcom/bcm2835_smi.h
+@@ -0,0 +1,391 @@
++/**
++ * Declarations and definitions for Broadcom's Secondary Memory Interface
++ *
++ * Written by Luke Wren <luke@raspberrypi.org>
++ * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
++ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2, as published by the Free
++ * Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++#ifndef BCM2835_SMI_H
++#define BCM2835_SMI_H
++
++#include <linux/ioctl.h>
++
++#ifndef __KERNEL__
++#include <stdint.h>
++#include <stdbool.h>
++#endif
++
++#define BCM2835_SMI_IOC_MAGIC 0x1
++#define BCM2835_SMI_INVALID_HANDLE (~0)
++
++/* IOCTLs 0x100...0x1ff are not device-specific - we can use them */
++#define BCM2835_SMI_IOC_GET_SETTINGS    _IO(BCM2835_SMI_IOC_MAGIC, 0)
++#define BCM2835_SMI_IOC_WRITE_SETTINGS  _IO(BCM2835_SMI_IOC_MAGIC, 1)
++#define BCM2835_SMI_IOC_ADDRESS	 _IO(BCM2835_SMI_IOC_MAGIC, 2)
++#define BCM2835_SMI_IOC_MAX	     2
++
++#define SMI_WIDTH_8BIT 0
++#define SMI_WIDTH_16BIT 1
++#define SMI_WIDTH_9BIT 2
++#define SMI_WIDTH_18BIT 3
++
++/* max number of bytes where DMA will not be used */
++#define DMA_THRESHOLD_BYTES 128
++#define DMA_BOUNCE_BUFFER_SIZE (1024 * 1024 / 2)
++#define DMA_BOUNCE_BUFFER_COUNT 3
++
++
++struct smi_settings {
++	int data_width;
++	/* Whether or not to pack multiple SMI transfers into a
++	   single 32 bit FIFO word */
++	bool pack_data;
++
++	/* Timing for reads (writes the same but for WE)
++	 *
++	 * OE ----------+	   +--------------------
++	 *		|	   |
++	 *		+----------+
++	 * SD -<==============================>-----------
++	 * SA -<=========================================>-
++	 *    <-setup->  <-strobe ->  <-hold ->  <- pace ->
++	 */
++
++	int read_setup_time;
++	int read_hold_time;
++	int read_pace_time;
++	int read_strobe_time;
++
++	int write_setup_time;
++	int write_hold_time;
++	int write_pace_time;
++	int write_strobe_time;
++
++	bool dma_enable;		/* DREQs */
++	bool dma_passthrough_enable;	/* External DREQs */
++	int dma_read_thresh;
++	int dma_write_thresh;
++	int dma_panic_read_thresh;
++	int dma_panic_write_thresh;
++};
++
++/****************************************************************************
++*
++*   Declare exported SMI functions
++*
++***************************************************************************/
++
++#ifdef __KERNEL__
++
++#include <linux/dmaengine.h> /* for enum dma_transfer_direction */
++#include <linux/of.h>
++#include <linux/semaphore.h>
++
++struct bcm2835_smi_instance;
++
++struct bcm2835_smi_bounce_info {
++	struct semaphore callback_sem;
++	void *buffer[DMA_BOUNCE_BUFFER_COUNT];
++	dma_addr_t phys[DMA_BOUNCE_BUFFER_COUNT];
++	struct scatterlist sgl[DMA_BOUNCE_BUFFER_COUNT];
++};
++
++
++void bcm2835_smi_set_regs_from_settings(struct bcm2835_smi_instance *);
++
++struct smi_settings *bcm2835_smi_get_settings_from_regs(
++	struct bcm2835_smi_instance *inst);
++
++void bcm2835_smi_write_buf(
++	struct bcm2835_smi_instance *inst,
++	const void *buf,
++	size_t n_bytes);
++
++void bcm2835_smi_read_buf(
++	struct bcm2835_smi_instance *inst,
++	void *buf,
++	size_t n_bytes);
++
++void bcm2835_smi_set_address(struct bcm2835_smi_instance *inst,
++	unsigned int address);
++
++ssize_t bcm2835_smi_user_dma(
++	struct bcm2835_smi_instance *inst,
++	enum dma_transfer_direction dma_dir,
++	char __user *user_ptr,
++	size_t count,
++	struct bcm2835_smi_bounce_info **bounce);
++
++struct bcm2835_smi_instance *bcm2835_smi_get(struct device_node *node);
++
++#endif /* __KERNEL__ */
++
++/****************************************************************
++*
++*	Implementation-only declarations
++*
++****************************************************************/
++
++#ifdef BCM2835_SMI_IMPLEMENTATION
++
++/* Clock manager registers for SMI clock: */
++#define CM_SMI_BASE_ADDRESS ((BCM2708_PERI_BASE) + 0x1010b0)
++/* Clock manager "password" to protect registers from spurious writes */
++#define CM_PWD (0x5a << 24)
++
++#define CM_SMI_CTL	0x00
++#define CM_SMI_DIV	0x04
++
++#define CM_SMI_CTL_FLIP (1 << 8)
++#define CM_SMI_CTL_BUSY (1 << 7)
++#define CM_SMI_CTL_KILL (1 << 5)
++#define CM_SMI_CTL_ENAB (1 << 4)
++#define CM_SMI_CTL_SRC_MASK (0xf)
++#define CM_SMI_CTL_SRC_OFFS (0)
++
++#define CM_SMI_DIV_DIVI_MASK (0xf <<  12)
++#define CM_SMI_DIV_DIVI_OFFS (12)
++#define CM_SMI_DIV_DIVF_MASK (0xff << 4)
++#define CM_SMI_DIV_DIVF_OFFS (4)
++
++/* SMI register mapping:*/
++#define SMI_BASE_ADDRESS ((BCM2708_PERI_BASE) + 0x600000)
++
++#define SMICS	0x00	/* control + status register		*/
++#define SMIL	0x04	/* length/count (n external txfers)	*/
++#define SMIA	0x08	/* address register			*/
++#define SMID	0x0c	/* data register			*/
++#define SMIDSR0	0x10	/* device 0 read settings		*/
++#define SMIDSW0	0x14	/* device 0 write settings		*/
++#define SMIDSR1	0x18	/* device 1 read settings		*/
++#define SMIDSW1	0x1c	/* device 1 write settings		*/
++#define SMIDSR2	0x20	/* device 2 read settings		*/
++#define SMIDSW2	0x24	/* device 2 write settings		*/
++#define SMIDSR3	0x28	/* device 3 read settings		*/
++#define SMIDSW3	0x2c	/* device 3 write settings		*/
++#define SMIDC	0x30	/* DMA control registers		*/
++#define SMIDCS	0x34	/* direct control/status register	*/
++#define SMIDA	0x38	/* direct address register		*/
++#define SMIDD	0x3c	/* direct data registers		*/
++#define SMIFD	0x40	/* FIFO debug register			*/
++
++
++
++/* Control and Status register bits:
++ * SMICS_RXF	: RX fifo full: 1 when RX fifo is full
++ * SMICS_TXE	: TX fifo empty: 1 when empty.
++ * SMICS_RXD	: RX fifo contains data: 1 when there is data.
++ * SMICS_TXD	: TX fifo can accept data: 1 when true.
++ * SMICS_RXR	: RX fifo needs reading: 1 when fifo more than 3/4 full, or
++ *		  when "DONE" and fifo not emptied.
++ * SMICS_TXW	: TX fifo needs writing: 1 when less than 1/4 full.
++ * SMICS_AFERR	: AXI FIFO error: 1 when fifo read when empty or written
++ *		  when full. Write 1 to clear.
++ * SMICS_EDREQ	: 1 when external DREQ received.
++ * SMICS_PXLDAT	:  Pixel data:	write 1 to enable pixel transfer modes.
++ * SMICS_SETERR	: 1 if there was an error writing to setup regs (e.g.
++ *		  tx was in progress). Write 1 to clear.
++ * SMICS_PVMODE	: Set to 1 to enable pixel valve mode.
++ * SMICS_INTR	: Set to 1 to enable interrupt on RX.
++ * SMICS_INTT	: Set to 1 to enable interrupt on TX.
++ * SMICS_INTD	: Set to 1 to enable interrupt on DONE condition.
++ * SMICS_TEEN	: Tear effect mode enabled: Programmed transfers will wait
++ *		  for a TE trigger before writing.
++ * SMICS_PAD1	: Padding settings for external transfers. For writes: the
++ *		  number of bytes initially written to  the TX fifo that
++ * SMICS_PAD0	: should be ignored. For reads: the number of bytes that will
++ *		  be read before the data, and should be dropped.
++ * SMICS_WRITE	: Transfer direction: 1 = write to external device, 0 = read
++ * SMICS_CLEAR	: Write 1 to clear the FIFOs.
++ * SMICS_START	: Write 1 to start the programmed transfer.
++ * SMICS_ACTIVE	: Reads as 1 when a programmed transfer is underway.
++ * SMICS_DONE	: Reads as 1 when transfer finished. For RX, not set until
++ *		  FIFO emptied.
++ * SMICS_ENABLE	: Set to 1 to enable the SMI peripheral, 0 to disable.
++ */
++
++#define SMICS_RXF	(1 << 31)
++#define SMICS_TXE	(1 << 30)
++#define SMICS_RXD	(1 << 29)
++#define SMICS_TXD	(1 << 28)
++#define SMICS_RXR	(1 << 27)
++#define SMICS_TXW	(1 << 26)
++#define SMICS_AFERR	(1 << 25)
++#define SMICS_EDREQ	(1 << 15)
++#define SMICS_PXLDAT	(1 << 14)
++#define SMICS_SETERR	(1 << 13)
++#define SMICS_PVMODE	(1 << 12)
++#define SMICS_INTR	(1 << 11)
++#define SMICS_INTT	(1 << 10)
++#define SMICS_INTD	(1 << 9)
++#define SMICS_TEEN	(1 << 8)
++#define SMICS_PAD1	(1 << 7)
++#define SMICS_PAD0	(1 << 6)
++#define SMICS_WRITE	(1 << 5)
++#define SMICS_CLEAR	(1 << 4)
++#define SMICS_START	(1 << 3)
++#define SMICS_ACTIVE	(1 << 2)
++#define SMICS_DONE	(1 << 1)
++#define SMICS_ENABLE	(1 << 0)
++
++/* Address register bits: */
++
++#define SMIA_DEVICE_MASK ((1 << 9) | (1 << 8))
++#define SMIA_DEVICE_OFFS (8)
++#define SMIA_ADDR_MASK (0x3f)	/* bits 5 -> 0 */
++#define SMIA_ADDR_OFFS (0)
++
++/* DMA control register bits:
++ * SMIDC_DMAEN	: DMA enable: set 1: DMA requests will be issued.
++ * SMIDC_DMAP	: DMA passthrough: when set to 0, top two data pins are used by
++ *		  SMI as usual. When set to 1, the top two pins are used for
++ *		  external DREQs: pin 16 read request, 17 write.
++ * SMIDC_PANIC*	: Threshold at which DMA will panic during read/write.
++ * SMIDC_REQ*	: Threshold at which DMA will generate a DREQ.
++ */
++
++#define SMIDC_DMAEN		(1 << 28)
++#define SMIDC_DMAP		(1 << 24)
++#define SMIDC_PANICR_MASK	(0x3f << 18)
++#define SMIDC_PANICR_OFFS	(18)
++#define SMIDC_PANICW_MASK	(0x3f << 12)
++#define SMIDC_PANICW_OFFS	(12)
++#define SMIDC_REQR_MASK		(0x3f << 6)
++#define SMIDC_REQR_OFFS		(6)
++#define SMIDC_REQW_MASK		(0x3f)
++#define SMIDC_REQW_OFFS		(0)
++
++/* Device settings register bits: same for all 4 (or 3?) device register sets.
++ * Device read settings:
++ * SMIDSR_RWIDTH	: Read transfer width. 00 = 8bit, 01 = 16bit,
++ *			  10 = 18bit, 11 = 9bit.
++ * SMIDSR_RSETUP	: Read setup time: number of core cycles between chip
++ *			  select/address and read strobe. Min 1, max 64.
++ * SMIDSR_MODE68	: 1 for System 68 mode (i.e. enable + direction pins,
++ *			  rather than OE + WE pin)
++ * SMIDSR_FSETUP	: If set to 1, setup time only applies to first
++ *			  transfer after address change.
++ * SMIDSR_RHOLD		: Number of core cycles between read strobe going
++ *			  inactive and CS/address going inactive. Min 1, max 64
++ * SMIDSR_RPACEALL	: When set to 1, this device's RPACE value will always
++ *			  be used for the next transaction, even if it is not
++ *			  to this device.
++ * SMIDSR_RPACE		: Number of core cycles spent waiting between CS
++ *			  deassert and start of next transfer. Min 1, max 128
++ * SMIDSR_RDREQ		: 1 = use external DMA request on SD16 to pace reads
++ *			  from device. Must also set DMAP in SMICS.
++ * SMIDSR_RSTROBE	: Number of cycles to assert the read strobe.
++ *			  min 1, max 128.
++ */
++#define SMIDSR_RWIDTH_MASK	((1<<31)|(1<<30))
++#define SMIDSR_RWIDTH_OFFS	(30)
++#define SMIDSR_RSETUP_MASK	(0x3f << 24)
++#define SMIDSR_RSETUP_OFFS	(24)
++#define SMIDSR_MODE68		(1 << 23)
++#define SMIDSR_FSETUP		(1 << 22)
++#define SMIDSR_RHOLD_MASK	(0x3f << 16)
++#define SMIDSR_RHOLD_OFFS	(16)
++#define SMIDSR_RPACEALL		(1 << 15)
++#define SMIDSR_RPACE_MASK	(0x7f << 8)
++#define SMIDSR_RPACE_OFFS	(8)
++#define SMIDSR_RDREQ		(1 << 7)
++#define SMIDSR_RSTROBE_MASK	(0x7f)
++#define SMIDSR_RSTROBE_OFFS	(0)
++
++/* Device write settings:
++ * SMIDSW_WWIDTH	: Write transfer width. 00 = 8bit, 01 = 16bit,
++ *			  10= 18bit, 11 = 9bit.
++ * SMIDSW_WSETUP	: Number of cycles between CS assert and write strobe.
++ *			  Min 1, max 64.
++ * SMIDSW_WFORMAT	: Pixel format of input. 0 = 16bit RGB 565,
++ *			  1 = 32bit RGBA 8888
++ * SMIDSW_WSWAP		: 1 = swap pixel data bits. (Use with SMICS_PXLDAT)
++ * SMIDSW_WHOLD		: Time between WE deassert and CS deassert. 1 to 64
++ * SMIDSW_WPACEALL	: 1: this device's WPACE will be used for the next
++ *			  transfer, regardless of that transfer's device.
++ * SMIDSW_WPACE		: Cycles between CS deassert and next CS assert.
++ *			  Min 1, max 128
++ * SMIDSW_WDREQ		: Use external DREQ on pin 17 to pace writes. DMAP must
++ *			  be set in SMICS.
++ * SMIDSW_WSTROBE	: Number of cycles to assert the write strobe.
++ *			  Min 1, max 128
++ */
++#define SMIDSW_WWIDTH_MASK	 ((1<<31)|(1<<30))
++#define SMIDSW_WWIDTH_OFFS	(30)
++#define SMIDSW_WSETUP_MASK	(0x3f << 24)
++#define SMIDSW_WSETUP_OFFS	(24)
++#define SMIDSW_WFORMAT		(1 << 23)
++#define SMIDSW_WSWAP		(1 << 22)
++#define SMIDSW_WHOLD_MASK	(0x3f << 16)
++#define SMIDSW_WHOLD_OFFS	(16)
++#define SMIDSW_WPACEALL		(1 << 15)
++#define SMIDSW_WPACE_MASK	(0x7f << 8)
++#define SMIDSW_WPACE_OFFS	(8)
++#define SMIDSW_WDREQ		(1 << 7)
++#define SMIDSW_WSTROBE_MASK	 (0x7f)
++#define SMIDSW_WSTROBE_OFFS	 (0)
++
++/* Direct transfer control + status register
++ * SMIDCS_WRITE	: Direction of transfer: 1 -> write, 0 -> read
++ * SMIDCS_DONE	: 1 when a transfer has finished. Write 1 to clear.
++ * SMIDCS_START	: Write 1 to start a transfer, if one is not already underway.
++ * SMIDCE_ENABLE: Write 1 to enable SMI in direct mode.
++ */
++
++#define SMIDCS_WRITE		(1 << 3)
++#define SMIDCS_DONE		(1 << 2)
++#define SMIDCS_START		(1 << 1)
++#define SMIDCS_ENABLE		(1 << 0)
++
++/* Direct transfer address register
++ * SMIDA_DEVICE	: Indicates which of the device settings banks should be used.
++ * SMIDA_ADDR	: The value to be asserted on the address pins.
++ */
++
++#define SMIDA_DEVICE_MASK	((1<<9)|(1<<8))
++#define SMIDA_DEVICE_OFFS	(8)
++#define SMIDA_ADDR_MASK		(0x3f)
++#define SMIDA_ADDR_OFFS		(0)
++
++/* FIFO debug register
++ * SMIFD_FLVL	: The high-tide mark of FIFO count during the most recent txfer
++ * SMIFD_FCNT	: The current FIFO count.
++ */
++#define SMIFD_FLVL_MASK		(0x3f << 8)
++#define SMIFD_FLVL_OFFS		(8)
++#define SMIFD_FCNT_MASK		(0x3f)
++#define SMIFD_FCNT_OFFS		(0)
++
++#endif /* BCM2835_SMI_IMPLEMENTATION */
++
++#endif /* BCM2835_SMI_H */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0075-Add-Chris-Boot-s-i2c-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0075-Add-Chris-Boot-s-i2c-driver.patch
new file mode 100644
index 0000000000..12388ae32a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0075-Add-Chris-Boot-s-i2c-driver.patch
@@ -0,0 +1,660 @@
+From 1ef16c46c87351e276f9c2b9bf04e1f6dcd015b7 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 17 Jun 2015 15:44:08 +0100
+Subject: [PATCH] Add Chris Boot's i2c driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+i2c-bcm2708: fixed baudrate
+
+Fixed issue where the wrong CDIV value was set for baudrates below 3815 Hz (for 250MHz bus clock).
+In that case the computed CDIV value was more than 0xffff. However the CDIV register width is only 16 bits.
+This resulted in incorrect setting of CDIV and higher baudrate than intended.
+Example: 3500Hz -> CDIV=0x11704 -> CDIV(16bit)=0x1704 -> 42430Hz
+After correction: 3500Hz -> CDIV=0x11704 -> CDIV(16bit)=0xffff -> 3815Hz
+The correct baudrate is shown in the log after the cdiv > 0xffff correction.
+
+Perform I2C combined transactions when possible
+
+Perform I2C combined transactions whenever possible, within the
+restrictions of the Broadcomm Serial Controller.
+
+Disable DONE interrupt during TA poll
+
+Prevent interrupt from being triggered if poll is missed and transfer
+starts and finishes.
+
+i2c: Make combined transactions optional and disabled by default
+
+i2c: bcm2708: add device tree support
+
+Add DT support to driver and add to .dtsi file.
+Setup pins in .dts file.
+i2c is disabled by default.
+
+Signed-off-by: Noralf Tronnes <notro@tronnes.org>
+
+bcm2708: don't register i2c controllers when using DT
+
+The devices for the i2c controllers are in the Device Tree.
+Only register devices when not using DT.
+
+Signed-off-by: Noralf Tronnes <notro@tronnes.org>
+
+I2C: Only register the I2C device for the current board revision
+
+i2c_bcm2708: Fix clock reference counting
+
+Fix grabbing lock from atomic context in i2c driver
+
+2 main changes:
+- check for timeouts in the bcm2708_bsc_setup function as indicated by this comment:
+      /* poll for transfer start bit (should only take 1-20 polls) */
+  This implies that the setup function can now fail so account for this everywhere it's called
+- Removed the clk_get_rate call from inside the setup function as it locks a mutex and that's not ok since we call it from under a spin lock.
+
+i2c-bcm2708: When using DT, leave the GPIO setup to pinctrl
+
+i2c-bcm2708: Increase timeouts to allow larger transfers
+
+Use the timeout value provided by the I2C_TIMEOUT ioctl when waiting
+for completion. The default timeout is 1 second.
+
+See: https://github.com/raspberrypi/linux/issues/260
+
+i2c-bcm2708/BCM270X_DT: Add support for I2C2
+
+The third I2C bus (I2C2) is normally reserved for HDMI use. Careless
+use of this bus can break an attached display - use with caution.
+
+It is recommended to disable accesses by VideoCore by setting
+hdmi_ignore_edid=1 or hdmi_edid_file=1 in config.txt.
+
+The interface is disabled by default - enable using the
+i2c2_iknowwhatimdoing DT parameter.
+
+bcm2708-spi: Don't use static pin configuration with DT
+
+Also remove superfluous error checking - the SPI framework ensures the
+validity of the chip_select value.
+
+i2c-bcm2708: Remove non-DT support
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+Set the BSC_CLKT clock streching timeout to 35ms as per SMBus specs.
+
+Fixes i2c_bcm2708: Write to FIFO correctly - v2 (#1574)
+
+* i2c: fix i2c_bcm2708: Clear FIFO before sending data
+
+Make sure FIFO gets cleared before trying to send
+data in case of a repeated start (COMBINED=Y).
+
+* i2c: fix i2c_bcm2708: Only write to FIFO when not full
+
+Check if FIFO can accept data before writing.
+To avoid a peripheral read on the last iteration of a loop,
+both bcm2708_bsc_fifo_fill and ~drain are changed as well.
+---
+ drivers/i2c/busses/Kconfig       |  19 ++
+ drivers/i2c/busses/Makefile      |   2 +
+ drivers/i2c/busses/i2c-bcm2708.c | 512 +++++++++++++++++++++++++++++++
+ 3 files changed, 533 insertions(+)
+ create mode 100644 drivers/i2c/busses/i2c-bcm2708.c
+
+--- a/drivers/i2c/busses/Kconfig
++++ b/drivers/i2c/busses/Kconfig
+@@ -9,6 +9,25 @@ menu "I2C Hardware Bus support"
+ comment "PC SMBus host controller drivers"
+ 	depends on PCI
+ 
++config I2C_BCM2708
++	tristate "BCM2708 BSC"
++	depends on ARCH_BCM2835
++	help
++	  Enabling this option will add BSC (Broadcom Serial Controller)
++	  support for the BCM2708. BSC is a Broadcom proprietary bus compatible
++	  with I2C/TWI/SMBus.
++
++config I2C_BCM2708_BAUDRATE
++	prompt "BCM2708 I2C baudrate"
++	depends on I2C_BCM2708
++	int
++	default 100000
++	help
++	  Set the I2C baudrate. This will alter the default value. A
++	  different baudrate can be set by using a module parameter as well. If
++	  no parameter is provided when loading, this is the value that will be
++	  used.
++
+ config I2C_ALI1535
+ 	tristate "ALI 1535"
+ 	depends on PCI
+--- a/drivers/i2c/busses/Makefile
++++ b/drivers/i2c/busses/Makefile
+@@ -3,6 +3,8 @@
+ # Makefile for the i2c bus drivers.
+ #
+ 
++obj-$(CONFIG_I2C_BCM2708)	+= i2c-bcm2708.o
++
+ # ACPI drivers
+ obj-$(CONFIG_I2C_SCMI)		+= i2c-scmi.o
+ 
+--- /dev/null
++++ b/drivers/i2c/busses/i2c-bcm2708.c
+@@ -0,0 +1,512 @@
++/*
++ * Driver for Broadcom BCM2708 BSC Controllers
++ *
++ * Copyright (C) 2012 Chris Boot & Frank Buss
++ *
++ * This driver is inspired by:
++ * i2c-ocores.c, by Peter Korsgaard <jacmet@sunsite.dk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/spinlock.h>
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/io.h>
++#include <linux/slab.h>
++#include <linux/i2c.h>
++#include <linux/interrupt.h>
++#include <linux/sched.h>
++#include <linux/wait.h>
++
++/* BSC register offsets */
++#define BSC_C			0x00
++#define BSC_S			0x04
++#define BSC_DLEN		0x08
++#define BSC_A			0x0c
++#define BSC_FIFO		0x10
++#define BSC_DIV			0x14
++#define BSC_DEL			0x18
++#define BSC_CLKT		0x1c
++
++/* Bitfields in BSC_C */
++#define BSC_C_I2CEN		0x00008000
++#define BSC_C_INTR		0x00000400
++#define BSC_C_INTT		0x00000200
++#define BSC_C_INTD		0x00000100
++#define BSC_C_ST		0x00000080
++#define BSC_C_CLEAR_1		0x00000020
++#define BSC_C_CLEAR_2		0x00000010
++#define BSC_C_READ		0x00000001
++
++/* Bitfields in BSC_S */
++#define BSC_S_CLKT		0x00000200
++#define BSC_S_ERR		0x00000100
++#define BSC_S_RXF		0x00000080
++#define BSC_S_TXE		0x00000040
++#define BSC_S_RXD		0x00000020
++#define BSC_S_TXD		0x00000010
++#define BSC_S_RXR		0x00000008
++#define BSC_S_TXW		0x00000004
++#define BSC_S_DONE		0x00000002
++#define BSC_S_TA		0x00000001
++
++#define I2C_WAIT_LOOP_COUNT	200
++
++#define DRV_NAME		"bcm2708_i2c"
++
++static unsigned int baudrate;
++module_param(baudrate, uint, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
++MODULE_PARM_DESC(baudrate, "The I2C baudrate");
++
++static bool combined = false;
++module_param(combined, bool, 0644);
++MODULE_PARM_DESC(combined, "Use combined transactions");
++
++struct bcm2708_i2c {
++	struct i2c_adapter adapter;
++
++	spinlock_t lock;
++	void __iomem *base;
++	int irq;
++	struct clk *clk;
++	u32 cdiv;
++	u32 clk_tout;
++
++	struct completion done;
++
++	struct i2c_msg *msg;
++	int pos;
++	int nmsgs;
++	bool error;
++};
++
++static inline u32 bcm2708_rd(struct bcm2708_i2c *bi, unsigned reg)
++{
++	return readl(bi->base + reg);
++}
++
++static inline void bcm2708_wr(struct bcm2708_i2c *bi, unsigned reg, u32 val)
++{
++	writel(val, bi->base + reg);
++}
++
++static inline void bcm2708_bsc_reset(struct bcm2708_i2c *bi)
++{
++	bcm2708_wr(bi, BSC_C, 0);
++	bcm2708_wr(bi, BSC_S, BSC_S_CLKT | BSC_S_ERR | BSC_S_DONE);
++}
++
++static inline void bcm2708_bsc_fifo_drain(struct bcm2708_i2c *bi)
++{
++	while ((bi->pos < bi->msg->len) && (bcm2708_rd(bi, BSC_S) & BSC_S_RXD))
++		bi->msg->buf[bi->pos++] = bcm2708_rd(bi, BSC_FIFO);
++}
++
++static inline void bcm2708_bsc_fifo_fill(struct bcm2708_i2c *bi)
++{
++	while ((bi->pos < bi->msg->len) && (bcm2708_rd(bi, BSC_S) & BSC_S_TXD))
++		bcm2708_wr(bi, BSC_FIFO, bi->msg->buf[bi->pos++]);
++}
++
++static inline int bcm2708_bsc_setup(struct bcm2708_i2c *bi)
++{
++	u32 cdiv, s, clk_tout;
++	u32 c = BSC_C_I2CEN | BSC_C_INTD | BSC_C_ST | BSC_C_CLEAR_1;
++	int wait_loops = I2C_WAIT_LOOP_COUNT;
++
++	/* Can't call clk_get_rate as it locks a mutex and here we are spinlocked.
++	 * Use the value that we cached in the probe.
++	 */
++	cdiv = bi->cdiv;
++	clk_tout = bi->clk_tout;
++
++	if (bi->msg->flags & I2C_M_RD)
++		c |= BSC_C_INTR | BSC_C_READ;
++	else
++		c |= BSC_C_INTT;
++
++	bcm2708_wr(bi, BSC_CLKT, clk_tout);
++	bcm2708_wr(bi, BSC_DIV, cdiv);
++	bcm2708_wr(bi, BSC_A, bi->msg->addr);
++	bcm2708_wr(bi, BSC_DLEN, bi->msg->len);
++	if (combined)
++	{
++		/* Do the next two messages meet combined transaction criteria?
++		   - Current message is a write, next message is a read
++		   - Both messages to same slave address
++		   - Write message can fit inside FIFO (16 bytes or less) */
++		if ( (bi->nmsgs > 1) &&
++			!(bi->msg[0].flags & I2C_M_RD) && (bi->msg[1].flags & I2C_M_RD) &&
++			 (bi->msg[0].addr == bi->msg[1].addr) && (bi->msg[0].len <= 16)) {
++
++			/* Clear FIFO */
++			bcm2708_wr(bi, BSC_C, BSC_C_CLEAR_1);
++
++			/* Fill FIFO with entire write message (16 byte FIFO) */
++			while (bi->pos < bi->msg->len) {
++				bcm2708_wr(bi, BSC_FIFO, bi->msg->buf[bi->pos++]);
++			}
++			/* Start write transfer (no interrupts, don't clear FIFO) */
++			bcm2708_wr(bi, BSC_C, BSC_C_I2CEN | BSC_C_ST);
++
++			/* poll for transfer start bit (should only take 1-20 polls) */
++			do {
++				s = bcm2708_rd(bi, BSC_S);
++			} while (!(s & (BSC_S_TA | BSC_S_ERR | BSC_S_CLKT | BSC_S_DONE)) && --wait_loops >= 0);
++
++			/* did we time out or some error occured? */
++			if (wait_loops < 0 || (s & (BSC_S_ERR | BSC_S_CLKT))) {
++				return -1;
++			}
++
++			/* Send next read message before the write transfer finishes. */
++			bi->nmsgs--;
++			bi->msg++;
++			bi->pos = 0;
++			bcm2708_wr(bi, BSC_DLEN, bi->msg->len);
++			c = BSC_C_I2CEN | BSC_C_INTD | BSC_C_INTR | BSC_C_ST | BSC_C_READ;
++		}
++	}
++	bcm2708_wr(bi, BSC_C, c);
++
++	return 0;
++}
++
++static irqreturn_t bcm2708_i2c_interrupt(int irq, void *dev_id)
++{
++	struct bcm2708_i2c *bi = dev_id;
++	bool handled = true;
++	u32 s;
++	int ret;
++
++	spin_lock(&bi->lock);
++
++	/* we may see camera interrupts on the "other" I2C channel
++		   Just return if we've not sent anything */
++	if (!bi->nmsgs || !bi->msg) {
++		goto early_exit;
++	}
++
++	s = bcm2708_rd(bi, BSC_S);
++
++	if (s & (BSC_S_CLKT | BSC_S_ERR)) {
++		bcm2708_bsc_reset(bi);
++		bi->error = true;
++
++		bi->msg = 0; /* to inform the that all work is done */
++		bi->nmsgs = 0;
++		/* wake up our bh */
++		complete(&bi->done);
++	} else if (s & BSC_S_DONE) {
++		bi->nmsgs--;
++
++		if (bi->msg->flags & I2C_M_RD) {
++			bcm2708_bsc_fifo_drain(bi);
++		}
++
++		bcm2708_bsc_reset(bi);
++
++		if (bi->nmsgs) {
++			/* advance to next message */
++			bi->msg++;
++			bi->pos = 0;
++			ret = bcm2708_bsc_setup(bi);
++			if (ret < 0) {
++				bcm2708_bsc_reset(bi);
++				bi->error = true;
++				bi->msg = 0; /* to inform the that all work is done */
++				bi->nmsgs = 0;
++				/* wake up our bh */
++				complete(&bi->done);
++				goto early_exit;
++			}
++		} else {
++			bi->msg = 0; /* to inform the that all work is done */
++			bi->nmsgs = 0;
++			/* wake up our bh */
++			complete(&bi->done);
++		}
++	} else if (s & BSC_S_TXW) {
++		bcm2708_bsc_fifo_fill(bi);
++	} else if (s & BSC_S_RXR) {
++		bcm2708_bsc_fifo_drain(bi);
++	} else {
++		handled = false;
++	}
++
++early_exit:
++	spin_unlock(&bi->lock);
++
++	return handled ? IRQ_HANDLED : IRQ_NONE;
++}
++
++static int bcm2708_i2c_master_xfer(struct i2c_adapter *adap,
++	struct i2c_msg *msgs, int num)
++{
++	struct bcm2708_i2c *bi = adap->algo_data;
++	unsigned long flags;
++	int ret;
++
++	spin_lock_irqsave(&bi->lock, flags);
++
++	reinit_completion(&bi->done);
++	bi->msg = msgs;
++	bi->pos = 0;
++	bi->nmsgs = num;
++	bi->error = false;
++
++	ret = bcm2708_bsc_setup(bi);
++
++	spin_unlock_irqrestore(&bi->lock, flags);
++
++	/* check the result of the setup */
++	if (ret < 0)
++	{
++		dev_err(&adap->dev, "transfer setup timed out\n");
++		goto error_timeout;
++	}
++
++	ret = wait_for_completion_timeout(&bi->done, adap->timeout);
++	if (ret == 0) {
++		dev_err(&adap->dev, "transfer timed out\n");
++		goto error_timeout;
++	}
++
++	ret = bi->error ? -EIO : num;
++	return ret;
++
++error_timeout:
++	spin_lock_irqsave(&bi->lock, flags);
++	bcm2708_bsc_reset(bi);
++	bi->msg = 0; /* to inform the interrupt handler that there's nothing else to be done */
++	bi->nmsgs = 0;
++	spin_unlock_irqrestore(&bi->lock, flags);
++	return -ETIMEDOUT;
++}
++
++static u32 bcm2708_i2c_functionality(struct i2c_adapter *adap)
++{
++	return I2C_FUNC_I2C | /*I2C_FUNC_10BIT_ADDR |*/ I2C_FUNC_SMBUS_EMUL;
++}
++
++static struct i2c_algorithm bcm2708_i2c_algorithm = {
++	.master_xfer = bcm2708_i2c_master_xfer,
++	.functionality = bcm2708_i2c_functionality,
++};
++
++static int bcm2708_i2c_probe(struct platform_device *pdev)
++{
++	struct resource *regs;
++	int irq, err = -ENOMEM;
++	struct clk *clk;
++	struct bcm2708_i2c *bi;
++	struct i2c_adapter *adap;
++	unsigned long bus_hz;
++	u32 cdiv, clk_tout;
++	u32 baud;
++
++	baud = CONFIG_I2C_BCM2708_BAUDRATE;
++
++	if (pdev->dev.of_node) {
++		u32 bus_clk_rate;
++		pdev->id = of_alias_get_id(pdev->dev.of_node, "i2c");
++		if (pdev->id < 0) {
++			dev_err(&pdev->dev, "alias is missing\n");
++			return -EINVAL;
++		}
++		if (!of_property_read_u32(pdev->dev.of_node,
++					"clock-frequency", &bus_clk_rate))
++			baud = bus_clk_rate;
++		else
++			dev_warn(&pdev->dev,
++				"Could not read clock-frequency property\n");
++	}
++
++	if (baudrate)
++		baud = baudrate;
++
++	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!regs) {
++		dev_err(&pdev->dev, "could not get IO memory\n");
++		return -ENXIO;
++	}
++
++	irq = platform_get_irq(pdev, 0);
++	if (irq < 0) {
++		dev_err(&pdev->dev, "could not get IRQ\n");
++		return irq;
++	}
++
++	clk = clk_get(&pdev->dev, NULL);
++	if (IS_ERR(clk)) {
++		dev_err(&pdev->dev, "could not find clk: %ld\n", PTR_ERR(clk));
++		return PTR_ERR(clk);
++	}
++
++	err = clk_prepare_enable(clk);
++	if (err) {
++		dev_err(&pdev->dev, "could not enable clk: %d\n", err);
++		goto out_clk_put;
++	}
++
++	bi = kzalloc(sizeof(*bi), GFP_KERNEL);
++	if (!bi)
++		goto out_clk_disable;
++
++	platform_set_drvdata(pdev, bi);
++
++	adap = &bi->adapter;
++	adap->class = I2C_CLASS_HWMON | I2C_CLASS_DDC;
++	adap->algo = &bcm2708_i2c_algorithm;
++	adap->algo_data = bi;
++	adap->dev.parent = &pdev->dev;
++	adap->nr = pdev->id;
++	strlcpy(adap->name, dev_name(&pdev->dev), sizeof(adap->name));
++	adap->dev.of_node = pdev->dev.of_node;
++
++	switch (pdev->id) {
++	case 0:
++		adap->class = I2C_CLASS_HWMON;
++		break;
++	case 1:
++		adap->class = I2C_CLASS_DDC;
++		break;
++	case 2:
++		adap->class = I2C_CLASS_DDC;
++		break;
++	default:
++		dev_err(&pdev->dev, "can only bind to BSC 0, 1 or 2\n");
++		err = -ENXIO;
++		goto out_free_bi;
++	}
++
++	spin_lock_init(&bi->lock);
++	init_completion(&bi->done);
++
++	bi->base = ioremap(regs->start, resource_size(regs));
++	if (!bi->base) {
++		dev_err(&pdev->dev, "could not remap memory\n");
++		goto out_free_bi;
++	}
++
++	bi->irq = irq;
++	bi->clk = clk;
++
++	err = request_irq(irq, bcm2708_i2c_interrupt, IRQF_SHARED,
++			dev_name(&pdev->dev), bi);
++	if (err) {
++		dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
++		goto out_iounmap;
++	}
++
++	bcm2708_bsc_reset(bi);
++
++	err = i2c_add_numbered_adapter(adap);
++	if (err < 0) {
++		dev_err(&pdev->dev, "could not add I2C adapter: %d\n", err);
++		goto out_free_irq;
++	}
++
++	bus_hz = clk_get_rate(bi->clk);
++	cdiv = bus_hz / baud;
++	if (cdiv > 0xffff) {
++		cdiv = 0xffff;
++		baud = bus_hz / cdiv;
++	}
++
++	clk_tout = 35/1000*baud; //35ms timeout as per SMBus specs.
++	if (clk_tout > 0xffff)
++		clk_tout = 0xffff;
++	
++	bi->cdiv = cdiv;
++	bi->clk_tout = clk_tout;
++
++	dev_info(&pdev->dev, "BSC%d Controller at 0x%08lx (irq %d) (baudrate %d)\n",
++		pdev->id, (unsigned long)regs->start, irq, baud);
++
++	return 0;
++
++out_free_irq:
++	free_irq(bi->irq, bi);
++out_iounmap:
++	iounmap(bi->base);
++out_free_bi:
++	kfree(bi);
++out_clk_disable:
++	clk_disable_unprepare(clk);
++out_clk_put:
++	clk_put(clk);
++	return err;
++}
++
++static int bcm2708_i2c_remove(struct platform_device *pdev)
++{
++	struct bcm2708_i2c *bi = platform_get_drvdata(pdev);
++
++	platform_set_drvdata(pdev, NULL);
++
++	i2c_del_adapter(&bi->adapter);
++	free_irq(bi->irq, bi);
++	iounmap(bi->base);
++	clk_disable_unprepare(bi->clk);
++	clk_put(bi->clk);
++	kfree(bi);
++
++	return 0;
++}
++
++static const struct of_device_id bcm2708_i2c_of_match[] = {
++        { .compatible = "brcm,bcm2708-i2c" },
++        {},
++};
++MODULE_DEVICE_TABLE(of, bcm2708_i2c_of_match);
++
++static struct platform_driver bcm2708_i2c_driver = {
++	.driver		= {
++		.name	= DRV_NAME,
++		.owner	= THIS_MODULE,
++		.of_match_table = bcm2708_i2c_of_match,
++	},
++	.probe		= bcm2708_i2c_probe,
++	.remove		= bcm2708_i2c_remove,
++};
++
++// module_platform_driver(bcm2708_i2c_driver);
++
++
++static int __init bcm2708_i2c_init(void)
++{
++	return platform_driver_register(&bcm2708_i2c_driver);
++}
++
++static void __exit bcm2708_i2c_exit(void)
++{
++	platform_driver_unregister(&bcm2708_i2c_driver);
++}
++
++module_init(bcm2708_i2c_init);
++module_exit(bcm2708_i2c_exit);
++
++
++
++MODULE_DESCRIPTION("BSC controller driver for Broadcom BCM2708");
++MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0076-char-broadcom-Add-vcio-module.patch b/target/linux/bcm27xx/patches-5.15/950-0076-char-broadcom-Add-vcio-module.patch
new file mode 100644
index 0000000000..d0796af3d2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0076-char-broadcom-Add-vcio-module.patch
@@ -0,0 +1,254 @@
+From 983ebbacaeeff7dd143170e649a63345d492c858 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Fri, 26 Jun 2015 14:27:06 +0200
+Subject: [PATCH] char: broadcom: Add vcio module
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add module for accessing the mailbox property channel through
+/dev/vcio. Was previously in bcm2708-vcio.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+char: vcio: Add compat ioctl handling
+
+There was no compat ioctl handler, so 32 bit userspace on a
+64 bit kernel failed as IOCTL_MBOX_PROPERTY used the size
+of char*.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+char: vcio: Fail probe if rpi_firmware is not found.
+
+Device Tree is now the only supported config mechanism, therefore
+uncomment the block of code that fails the probe if the
+firmware node can't be found.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/char/broadcom/Kconfig  |   6 +
+ drivers/char/broadcom/Makefile |   1 +
+ drivers/char/broadcom/vcio.c   | 194 +++++++++++++++++++++++++++++++++
+ 3 files changed, 201 insertions(+)
+ create mode 100644 drivers/char/broadcom/vcio.c
+
+--- a/drivers/char/broadcom/Kconfig
++++ b/drivers/char/broadcom/Kconfig
+@@ -15,6 +15,12 @@ config BCM2708_VCMEM
+         help
+           Helper for videocore memory access and total size allocation.
+ 
++config BCM_VCIO
++	tristate "Mailbox userspace access"
++	depends on BCM2835_MBOX
++	help
++	  Gives access to the mailbox property channel from userspace.
++
+ endif
+ 
+ config BCM2835_DEVGPIOMEM
+--- a/drivers/char/broadcom/Makefile
++++ b/drivers/char/broadcom/Makefile
+@@ -1,3 +1,4 @@
+ obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
++obj-$(CONFIG_BCM_VCIO)		+= vcio.o
+ obj-$(CONFIG_BCM2835_DEVGPIOMEM)+= bcm2835-gpiomem.o
+ obj-$(CONFIG_BCM2835_SMI_DEV)	+= bcm2835_smi_dev.o
+--- /dev/null
++++ b/drivers/char/broadcom/vcio.c
+@@ -0,0 +1,194 @@
++/*
++ *  Copyright (C) 2010 Broadcom
++ *  Copyright (C) 2015 Noralf Trønnes
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ */
++
++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
++
++#include <linux/cdev.h>
++#include <linux/device.h>
++#include <linux/fs.h>
++#include <linux/init.h>
++#include <linux/ioctl.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++#define MBOX_CHAN_PROPERTY 8
++
++#define VCIO_IOC_MAGIC 100
++#define IOCTL_MBOX_PROPERTY _IOWR(VCIO_IOC_MAGIC, 0, char *)
++#ifdef CONFIG_COMPAT
++#define IOCTL_MBOX_PROPERTY32 _IOWR(VCIO_IOC_MAGIC, 0, compat_uptr_t)
++#endif
++
++static struct {
++	dev_t devt;
++	struct cdev cdev;
++	struct class *class;
++	struct rpi_firmware *fw;
++} vcio;
++
++static int vcio_user_property_list(void *user)
++{
++	u32 *buf, size;
++	int ret;
++
++	/* The first 32-bit is the size of the buffer */
++	if (copy_from_user(&size, user, sizeof(size)))
++		return -EFAULT;
++
++	buf = kmalloc(size, GFP_KERNEL);
++	if (!buf)
++		return -ENOMEM;
++
++	if (copy_from_user(buf, user, size)) {
++		kfree(buf);
++		return -EFAULT;
++	}
++
++	/* Strip off protocol encapsulation */
++	ret = rpi_firmware_property_list(vcio.fw, &buf[2], size - 12);
++	if (ret) {
++		kfree(buf);
++		return ret;
++	}
++
++	buf[1] = RPI_FIRMWARE_STATUS_SUCCESS;
++	if (copy_to_user(user, buf, size))
++		ret = -EFAULT;
++
++	kfree(buf);
++
++	return ret;
++}
++
++static int vcio_device_open(struct inode *inode, struct file *file)
++{
++	try_module_get(THIS_MODULE);
++
++	return 0;
++}
++
++static int vcio_device_release(struct inode *inode, struct file *file)
++{
++	module_put(THIS_MODULE);
++
++	return 0;
++}
++
++static long vcio_device_ioctl(struct file *file, unsigned int ioctl_num,
++			      unsigned long ioctl_param)
++{
++	switch (ioctl_num) {
++	case IOCTL_MBOX_PROPERTY:
++		return vcio_user_property_list((void *)ioctl_param);
++	default:
++		pr_err("unknown ioctl: %x\n", ioctl_num);
++		return -EINVAL;
++	}
++}
++
++#ifdef CONFIG_COMPAT
++static long vcio_device_compat_ioctl(struct file *file, unsigned int ioctl_num,
++				     unsigned long ioctl_param)
++{
++	switch (ioctl_num) {
++	case IOCTL_MBOX_PROPERTY32:
++		return vcio_user_property_list(compat_ptr(ioctl_param));
++	default:
++		pr_err("unknown ioctl: %x\n", ioctl_num);
++		return -EINVAL;
++	}
++}
++#endif
++
++const struct file_operations vcio_fops = {
++	.unlocked_ioctl = vcio_device_ioctl,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl = vcio_device_compat_ioctl,
++#endif
++	.open = vcio_device_open,
++	.release = vcio_device_release,
++};
++
++static int __init vcio_init(void)
++{
++	struct device_node *np;
++	static struct device *dev;
++	int ret;
++
++	np = of_find_compatible_node(NULL, NULL,
++				     "raspberrypi,bcm2835-firmware");
++	if (!of_device_is_available(np))
++		return -ENODEV;
++
++	vcio.fw = rpi_firmware_get(np);
++	if (!vcio.fw)
++		return -ENODEV;
++
++	ret = alloc_chrdev_region(&vcio.devt, 0, 1, "vcio");
++	if (ret) {
++		pr_err("failed to allocate device number\n");
++		return ret;
++	}
++
++	cdev_init(&vcio.cdev, &vcio_fops);
++	vcio.cdev.owner = THIS_MODULE;
++	ret = cdev_add(&vcio.cdev, vcio.devt, 1);
++	if (ret) {
++		pr_err("failed to register device\n");
++		goto err_unregister_chardev;
++	}
++
++	/*
++	 * Create sysfs entries
++	 * 'bcm2708_vcio' is used for backwards compatibility so we don't break
++	 * userspace. Raspian has a udev rule that changes the permissions.
++	 */
++	vcio.class = class_create(THIS_MODULE, "bcm2708_vcio");
++	if (IS_ERR(vcio.class)) {
++		ret = PTR_ERR(vcio.class);
++		pr_err("failed to create class\n");
++		goto err_cdev_del;
++	}
++
++	dev = device_create(vcio.class, NULL, vcio.devt, NULL, "vcio");
++	if (IS_ERR(dev)) {
++		ret = PTR_ERR(dev);
++		pr_err("failed to create device\n");
++		goto err_class_destroy;
++	}
++
++	return 0;
++
++err_class_destroy:
++	class_destroy(vcio.class);
++err_cdev_del:
++	cdev_del(&vcio.cdev);
++err_unregister_chardev:
++	unregister_chrdev_region(vcio.devt, 1);
++
++	return ret;
++}
++module_init(vcio_init);
++
++static void __exit vcio_exit(void)
++{
++	device_destroy(vcio.class, vcio.devt);
++	class_destroy(vcio.class);
++	cdev_del(&vcio.cdev);
++	unregister_chrdev_region(vcio.devt, 1);
++}
++module_exit(vcio_exit);
++
++MODULE_AUTHOR("Gray Girling");
++MODULE_AUTHOR("Noralf Trønnes");
++MODULE_DESCRIPTION("Mailbox userspace access");
++MODULE_LICENSE("GPL");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0077-firmware-bcm2835-Support-ARCH_BCM270x.patch b/target/linux/bcm27xx/patches-5.15/950-0077-firmware-bcm2835-Support-ARCH_BCM270x.patch
new file mode 100644
index 0000000000..7dfc34c452
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0077-firmware-bcm2835-Support-ARCH_BCM270x.patch
@@ -0,0 +1,74 @@
+From abea9147d22704cdfb68b7161a71dc9fb8fcb0b0 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Fri, 26 Jun 2015 14:25:01 +0200
+Subject: [PATCH] firmware: bcm2835: Support ARCH_BCM270x
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Support booting without Device Tree.
+Turn on USB power.
+Load driver early because of lacking support for deferred probing
+in many drivers.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+firmware: bcm2835: Don't turn on USB power
+
+The raspberrypi-power driver is now used to turn on USB power.
+
+This partly reverts commit:
+firmware: bcm2835: Support ARCH_BCM270x
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ drivers/firmware/raspberrypi.c | 17 ++++++++++++++++-
+ 1 file changed, 16 insertions(+), 1 deletion(-)
+
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -32,6 +32,8 @@ struct rpi_firmware {
+ 	struct kref consumers;
+ };
+ 
++static struct platform_device *g_pdev;
++
+ static DEFINE_MUTEX(transaction_lock);
+ 
+ static void response_callback(struct mbox_client *cl, void *msg)
+@@ -279,6 +281,7 @@ static int rpi_firmware_probe(struct pla
+ 	kref_init(&fw->consumers);
+ 
+ 	platform_set_drvdata(pdev, fw);
++	g_pdev = pdev;
+ 
+ 	rpi_firmware_print_firmware_revision(fw);
+ 	rpi_register_hwmon_driver(dev, fw);
+@@ -307,6 +310,7 @@ static int rpi_firmware_remove(struct pl
+ 	rpi_clk = NULL;
+ 
+ 	rpi_firmware_put(fw);
++	g_pdev = NULL;
+ 
+ 	return 0;
+ }
+@@ -381,7 +385,18 @@ static struct platform_driver rpi_firmwa
+ 	.shutdown	= rpi_firmware_shutdown,
+ 	.remove		= rpi_firmware_remove,
+ };
+-module_platform_driver(rpi_firmware_driver);
++
++static int __init rpi_firmware_init(void)
++{
++	return platform_driver_register(&rpi_firmware_driver);
++}
++subsys_initcall(rpi_firmware_init);
++
++static void __init rpi_firmware_exit(void)
++{
++	platform_driver_unregister(&rpi_firmware_driver);
++}
++module_exit(rpi_firmware_exit);
+ 
+ MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
+ MODULE_DESCRIPTION("Raspberry Pi firmware driver");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0078-BCM2708-Add-core-Device-Tree-support.patch b/target/linux/bcm27xx/patches-5.15/950-0078-BCM2708-Add-core-Device-Tree-support.patch
new file mode 100644
index 0000000000..55ff91028f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0078-BCM2708-Add-core-Device-Tree-support.patch
@@ -0,0 +1,30178 @@
+From 47aa556cd8897b84417a2745650affa8e1dd2b62 Mon Sep 17 00:00:00 2001
+From: notro <notro@tronnes.org>
+Date: Wed, 9 Jul 2014 14:46:08 +0200
+Subject: [PATCH] BCM2708: Add core Device Tree support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add the bare minimum needed to boot BCM2708 from a Device Tree.
+
+Signed-off-by: Noralf Tronnes <notro@tronnes.org>
+
+BCM2708: DT: change 'axi' nodename to 'soc'
+
+Change DT node named 'axi' to 'soc' so it matches ARCH_BCM2835.
+The VC4 bootloader fills in certain properties in the 'axi' subtree,
+but since this is part of an upstreaming effort, the name is changed.
+
+Signed-off-by: Noralf Tronnes notro@tronnes.org
+
+BCM2708_DT: Correct length of the peripheral space
+
+Use dts-dirs feature for overlays.
+
+The kernel makefiles have a dts-dirs target that is for vendor subdirectories.
+
+Using this fixes the install_dtbs target, which previously did not install the overlays.
+
+BCM270X_DT: configure I2S DMA channels
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+BCM270X_DT: switch to bcm2835-i2s
+
+I2S soundcard drivers with proper devicetree support (i.e. not linking
+to the cpu_dai/platform via name but to cpu/platform via of_node)
+will work out of the box without any modifications.
+
+When the kernel is compiled without devicetree support the platform
+code will instantiate the bcm2708-i2s driver and I2S soundcard drivers
+will link to it via name, as before.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+SDIO-overlay: add poll_once-boolean parameter
+
+Add paramter to toggle sdio-device-polling
+done every second or once at boot-time.
+
+Signed-off-by: Patrick Boettcher <patrick.boettcher@posteo.de>
+
+BCM270X_DT: Make mmc overlay compatible with current firmware
+
+The original DT overlay logic followed a merge-then-patch procedure,
+i.e. parameters are applied to the loaded overlay before the overlay
+is merged into the base DTB. This sequence has been changed to
+patch-then-merge, in order to support parameterised node names, and
+to protect against bad overlays. As a result, overrides (parameters)
+must only target labels in the overlay, but the overlay can obviously target nodes in the base DTB.
+
+mmc-overlay.dts (that switches back to the original mmc sdcard
+driver) is the only overlay violating that rule, and this patch
+fixes it.
+
+bcm270x_dt: Use the sdhost MMC controller by default
+
+The "mmc" overlay reverts to using the other controller.
+
+squash: Add cprman to dt
+
+BCM270X_DT: Use clk_core for I2C interfaces
+
+BCM270X_DT: Use bcm283x.dtsi, bcm2835.dtsi and bcm2836.dtsi
+
+The mainline Device Tree files are quite close to downstream now.
+Let's use bcm283x.dtsi, bcm2835.dtsi and bcm2836.dtsi as base files
+for our dts files.
+
+Mainline dts files are based on these files:
+
+          bcm2835-rpi.dtsi
+  bcm2835.dtsi    bcm2836.dtsi
+          bcm283x.dtsi
+
+Current downstream are based on these:
+
+  bcm2708.dtsi    bcm2709.dtsi    bcm2710.dtsi
+             bcm2708_common.dtsi
+
+This patch introduces this dependency:
+
+  bcm2708.dtsi    bcm2709.dtsi
+          bcm2708-rpi.dtsi
+          bcm270x.dtsi
+  bcm2835.dtsi    bcm2836.dtsi
+          bcm283x.dtsi
+
+And:
+          bcm2710.dtsi
+          bcm2708-rpi.dtsi
+          bcm270x.dtsi
+          bcm283x.dtsi
+
+bcm270x.dtsi contains the downstream bcm283x.dtsi diff.
+bcm2708-rpi.dtsi is the downstream version of bcm2835-rpi.dtsi.
+
+Other changes:
+- The led node has moved from /soc/leds to /leds. This is not a problem
+  since the label is used to reference it.
+- The clk_osc reg property changes from 6 to 3.
+- The gpu nodes has their interrupt property set in the base file.
+- the clocks label does not point to the /clocks node anymore, but
+  points to the cprman node. This is not a problem since the overlays
+  that use the clock node refer to it directly: target-path = "/clocks";
+- some nodes now have 2 labels since mainline and downstream differs in
+  this respect: cprman/clocks, spi0/spi, gpu/vc4.
+- some nodes doesn't have an explicit status = "okay" since they're not
+  disabled in the base file: watchdog and random.
+- gpiomem doesn't need an explicit status = "okay".
+- bcm2708-rpi-cm.dts got the hpd-gpios property from bcm2708_common.dtsi,
+  it's now set directly in that file.
+- bcm2709-rpi-2-b.dts has the timer node moved from /soc/timer to /timer.
+- Removed clock-frequency property on the bcm{2709,2710}.dtsi timer nodes.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+BCM270X_DT: Use raspberrypi-power to turn on USB power
+
+Use the raspberrypi-power driver to turn on USB power.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+
+BCM270X_DT: Add a .dtbo target, use for overlays
+
+Change the filenames and extensions to keep the pre-DDT style of
+overlay (<name>-overlay.dtb) distinct from new ones that use a
+different style of local fixups (<name>.dtbo), and to match other
+platforms.
+
+The RPi firmware uses the DDTK trailer atom to choose which type of
+overlay to use for each kernel.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+BCM270X_DT: Don't generate "linux,phandle" props
+
+The EPAPR standard says to use "phandle" properties to store phandles,
+rather than the deprecated "linux,phandle" version. By default, dtc
+generates both, but adding "-H epapr" causes it to only generate
+"phandle"s, saving some space and clutter.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+BCM270X_DT: Add overlay for enc28j60 on SPI2
+
+Works on SPI2 for compute module
+
+BCM270X_DT: Add midi-uart0 overlay
+
+MIDI requires 31.25kbaud, a baudrate unsupported by Linux. The
+midi-uart0 overlay configures uart0 (ttyAMA0) to use a fake clock
+so that requesting 38.4kbaud actually gets 31.25kbaud.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+BCM270X_DT: Add i2c-sensor overlay
+
+The i2c-sensor overlay is a container for various pressure and
+temperature sensors, currently bmp085 and bmp280. The standalone
+bmp085_i2c-sensor overlay is now deprecated.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+BCM270X_DT: overlays/*-overlay.dtb -> overlays/*.dtbo (#1752)
+
+We now create overlays as .dtbo files.
+
+build: support for .dtbo files for dtb overlays
+
+Kernel 4.4.6+ on RaspberryPi support .dtbo files for overlays, instead of .dtb.
+Patch the kernel, which has faulty rules to generate .dtbo the way yocto does
+
+Signed-off-by: Herve Jourdain <herve.jourdain@neuf.fr>
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+BCM270X: Drop position requirement for CMA in VC4 overlay.
+
+No longer necessary since 2aefcd576195a739a7a256099571c9c4a401005f,
+and will probably let peeople that want to choose a larger CMA
+allocation (particularly on pi0/1).
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+
+BCM270X_DT: RPi Device Tree tidy
+
+Use the upstream sdhost node, add thermal-zones, and factor out some
+common elements.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+kbuild: Silence unhelpful DTC warnings
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+BCM270X_DT: DT build rules no longer arch-specific
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/Makefile                    |   17 +
+ arch/arm/boot/dts/bcm2708-rpi-b-plus.dts      |  129 +
+ arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts      |  132 +
+ arch/arm/boot/dts/bcm2708-rpi-b.dts           |  119 +
+ arch/arm/boot/dts/bcm2708-rpi-bt.dtsi         |   26 +
+ arch/arm/boot/dts/bcm2708-rpi-cm.dts          |  112 +
+ arch/arm/boot/dts/bcm2708-rpi-cm.dtsi         |   18 +
+ arch/arm/boot/dts/bcm2708-rpi-zero-w.dts      |  169 +
+ arch/arm/boot/dts/bcm2708-rpi-zero.dts        |  123 +
+ arch/arm/boot/dts/bcm2708-rpi.dtsi            |   36 +
+ arch/arm/boot/dts/bcm2708.dtsi                |   12 +
+ arch/arm/boot/dts/bcm2709-rpi-2-b.dts         |  129 +
+ arch/arm/boot/dts/bcm2709-rpi.dtsi            |    5 +
+ arch/arm/boot/dts/bcm2709.dtsi                |   22 +
+ arch/arm/boot/dts/bcm270x-rpi.dtsi            |  154 +
+ arch/arm/boot/dts/bcm270x.dtsi                |  217 +
+ arch/arm/boot/dts/bcm2710-rpi-2-b.dts         |  129 +
+ arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts    |  201 +
+ arch/arm/boot/dts/bcm2710-rpi-3-b.dts         |  203 +
+ arch/arm/boot/dts/bcm2710-rpi-cm3.dts         |  148 +
+ arch/arm/boot/dts/bcm2710.dtsi                |   25 +
+ arch/arm/boot/dts/bcm2711-rpi-4-b.dts         |  310 +-
+ arch/arm/boot/dts/bcm2711-rpi-400.dts         |  624 ++-
+ arch/arm/boot/dts/bcm2711-rpi-cm4.dts         |  660 +++
+ arch/arm/boot/dts/bcm2711-rpi-ds.dtsi         |  205 +
+ arch/arm/boot/dts/bcm2711.dtsi                |   46 +-
+ arch/arm/boot/dts/bcm271x-rpi-bt.dtsi         |   26 +
+ arch/arm/boot/dts/bcm2835-common.dtsi         |    4 +-
+ arch/arm/boot/dts/bcm2835-rpi-a-plus.dts      |    5 +
+ arch/arm/boot/dts/bcm2835-rpi-a.dts           |    7 +
+ arch/arm/boot/dts/bcm2835-rpi-b-plus.dts      |    5 +
+ arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts      |    7 +
+ arch/arm/boot/dts/bcm2835-rpi-b.dts           |    7 +
+ arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts     |    5 +
+ arch/arm/boot/dts/bcm2835-rpi-zero-w.dts      |    5 +
+ arch/arm/boot/dts/bcm2835-rpi-zero.dts        |    5 +
+ arch/arm/boot/dts/bcm2835-rpi.dtsi            |   19 +-
+ arch/arm/boot/dts/bcm2835.dtsi                |    2 +-
+ arch/arm/boot/dts/bcm2836-rpi-2-b.dts         |    5 +
+ arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts    |    5 +
+ arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts    |    5 +
+ arch/arm/boot/dts/bcm2837-rpi-3-b.dts         |    5 +
+ arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts     |    5 +
+ .../boot/dts/bcm283x-rpi-cam1-regulator.dtsi  |   10 +
+ arch/arm/boot/dts/bcm283x-rpi-csi0-2lane.dtsi |    4 +
+ arch/arm/boot/dts/bcm283x-rpi-csi1-2lane.dtsi |    4 +
+ arch/arm/boot/dts/bcm283x-rpi-csi1-4lane.dtsi |    4 +
+ .../boot/dts/bcm283x-rpi-i2c0mux_0_28.dtsi    |    4 +
+ .../boot/dts/bcm283x-rpi-i2c0mux_0_44.dtsi    |    4 +
+ arch/arm/boot/dts/bcm283x.dtsi                |   26 +-
+ arch/arm/boot/dts/overlays/Makefile           |  248 ++
+ arch/arm/boot/dts/overlays/README             | 3530 +++++++++++++++++
+ .../arm/boot/dts/overlays/act-led-overlay.dts |   27 +
+ .../boot/dts/overlays/adafruit18-overlay.dts  |   55 +
+ .../dts/overlays/adau1977-adc-overlay.dts     |   40 +
+ .../dts/overlays/adau7002-simple-overlay.dts  |   52 +
+ .../arm/boot/dts/overlays/ads1015-overlay.dts |   98 +
+ .../arm/boot/dts/overlays/ads1115-overlay.dts |  103 +
+ .../arm/boot/dts/overlays/ads7846-overlay.dts |   89 +
+ .../boot/dts/overlays/adv7282m-overlay.dts    |   65 +
+ .../boot/dts/overlays/adv728x-m-overlay.dts   |   37 +
+ .../overlays/akkordion-iqdacplus-overlay.dts  |   49 +
+ .../allo-boss-dac-pcm512x-audio-overlay.dts   |   59 +
+ .../overlays/allo-boss2-dac-audio-overlay.dts |   57 +
+ .../dts/overlays/allo-digione-overlay.dts     |   44 +
+ .../allo-katana-dac-audio-overlay.dts         |   57 +
+ .../allo-piano-dac-pcm512x-audio-overlay.dts  |   54 +
+ ...o-piano-dac-plus-pcm512x-audio-overlay.dts |   57 +
+ arch/arm/boot/dts/overlays/anyspi-overlay.dts |  205 +
+ .../boot/dts/overlays/apds9960-overlay.dts    |   57 +
+ .../boot/dts/overlays/applepi-dac-overlay.dts |   57 +
+ .../boot/dts/overlays/at86rf233-overlay.dts   |   57 +
+ .../overlays/audioinjector-addons-overlay.dts |   60 +
+ ...dioinjector-isolated-soundcard-overlay.dts |   55 +
+ .../overlays/audioinjector-ultra-overlay.dts  |   71 +
+ .../audioinjector-wm8731-audio-overlay.dts    |   39 +
+ .../dts/overlays/audiosense-pi-overlay.dts    |   82 +
+ .../boot/dts/overlays/audremap-overlay.dts    |   42 +
+ .../boot/dts/overlays/balena-fin-overlay.dts  |  125 +
+ .../arm/boot/dts/overlays/cap1106-overlay.dts |   52 +
+ .../boot/dts/overlays/chipdip-dac-overlay.dts |   46 +
+ arch/arm/boot/dts/overlays/cma-overlay.dts    |   36 +
+ arch/arm/boot/dts/overlays/dht11-overlay.dts  |   41 +
+ .../dts/overlays/dionaudio-loco-overlay.dts   |   39 +
+ .../overlays/dionaudio-loco-v2-overlay.dts    |   49 +
+ .../boot/dts/overlays/disable-bt-overlay.dts  |   64 +
+ .../dts/overlays/disable-wifi-overlay.dts     |   20 +
+ arch/arm/boot/dts/overlays/dpi18-overlay.dts  |   39 +
+ .../boot/dts/overlays/dpi18cpadhi-overlay.dts |   26 +
+ arch/arm/boot/dts/overlays/dpi24-overlay.dts  |   39 +
+ arch/arm/boot/dts/overlays/draws-overlay.dts  |  208 +
+ .../arm/boot/dts/overlays/dwc-otg-overlay.dts |   14 +
+ arch/arm/boot/dts/overlays/dwc2-overlay.dts   |   26 +
+ .../boot/dts/overlays/edt-ft5406-overlay.dts  |   10 +
+ arch/arm/boot/dts/overlays/edt-ft5406.dtsi    |   55 +
+ .../boot/dts/overlays/enc28j60-overlay.dts    |   53 +
+ .../dts/overlays/enc28j60-spi2-overlay.dts    |   47 +
+ .../arm/boot/dts/overlays/exc3000-overlay.dts |   48 +
+ .../boot/dts/overlays/fe-pi-audio-overlay.dts |   70 +
+ .../boot/dts/overlays/fsm-demo-overlay.dts    |  104 +
+ .../boot/dts/overlays/ghost-amp-overlay.dts   |  145 +
+ arch/arm/boot/dts/overlays/goodix-overlay.dts |   46 +
+ .../googlevoicehat-soundcard-overlay.dts      |   49 +
+ .../boot/dts/overlays/gpio-fan-overlay.dts    |   79 +
+ .../arm/boot/dts/overlays/gpio-ir-overlay.dts |   49 +
+ .../boot/dts/overlays/gpio-ir-tx-overlay.dts  |   36 +
+ .../boot/dts/overlays/gpio-key-overlay.dts    |   48 +
+ .../boot/dts/overlays/gpio-led-overlay.dts    |   97 +
+ .../overlays/gpio-no-bank0-irq-overlay.dts    |   14 +
+ .../boot/dts/overlays/gpio-no-irq-overlay.dts |   14 +
+ .../dts/overlays/gpio-poweroff-overlay.dts    |   37 +
+ .../dts/overlays/gpio-shutdown-overlay.dts    |   86 +
+ .../boot/dts/overlays/hd44780-lcd-overlay.dts |   46 +
+ .../hdmi-backlight-hwhack-gpio-overlay.dts    |   47 +
+ .../dts/overlays/hifiberry-amp-overlay.dts    |   39 +
+ .../dts/overlays/hifiberry-amp100-overlay.dts |   64 +
+ .../dts/overlays/hifiberry-dac-overlay.dts    |   34 +
+ .../overlays/hifiberry-dacplus-overlay.dts    |   65 +
+ .../overlays/hifiberry-dacplusadc-overlay.dts |   72 +
+ .../hifiberry-dacplusadcpro-overlay.dts       |   65 +
+ .../overlays/hifiberry-dacplusdsp-overlay.dts |   34 +
+ .../overlays/hifiberry-dacplushd-overlay.dts  |  106 +
+ .../dts/overlays/hifiberry-digi-overlay.dts   |   41 +
+ .../overlays/hifiberry-digi-pro-overlay.dts   |   43 +
+ .../boot/dts/overlays/highperi-overlay.dts    |   63 +
+ arch/arm/boot/dts/overlays/hy28a-overlay.dts  |   93 +
+ .../boot/dts/overlays/hy28b-2017-overlay.dts  |  152 +
+ arch/arm/boot/dts/overlays/hy28b-overlay.dts  |  148 +
+ .../boot/dts/overlays/i-sabre-q2m-overlay.dts |   39 +
+ .../boot/dts/overlays/i2c-bcm2708-overlay.dts |   13 +
+ .../boot/dts/overlays/i2c-gpio-overlay.dts    |   47 +
+ .../arm/boot/dts/overlays/i2c-mux-overlay.dts |  139 +
+ .../dts/overlays/i2c-pwm-pca9685a-overlay.dts |   26 +
+ .../arm/boot/dts/overlays/i2c-rtc-common.dtsi |  323 ++
+ .../dts/overlays/i2c-rtc-gpio-overlay.dts     |   31 +
+ .../arm/boot/dts/overlays/i2c-rtc-overlay.dts |   34 +
+ .../boot/dts/overlays/i2c-sensor-overlay.dts  |  320 ++
+ arch/arm/boot/dts/overlays/i2c0-overlay.dts   |   83 +
+ arch/arm/boot/dts/overlays/i2c1-overlay.dts   |   44 +
+ arch/arm/boot/dts/overlays/i2c3-overlay.dts   |   36 +
+ arch/arm/boot/dts/overlays/i2c4-overlay.dts   |   36 +
+ arch/arm/boot/dts/overlays/i2c5-overlay.dts   |   36 +
+ arch/arm/boot/dts/overlays/i2c6-overlay.dts   |   36 +
+ .../dts/overlays/i2s-gpio28-31-overlay.dts    |   18 +
+ .../boot/dts/overlays/ilitek251x-overlay.dts  |   45 +
+ arch/arm/boot/dts/overlays/imx219-overlay.dts |  115 +
+ arch/arm/boot/dts/overlays/imx290-overlay.dts |   32 +
+ .../boot/dts/overlays/imx290_327-overlay.dtsi |  144 +
+ arch/arm/boot/dts/overlays/imx378-overlay.dts |   10 +
+ arch/arm/boot/dts/overlays/imx477-overlay.dts |   10 +
+ .../boot/dts/overlays/imx477_378-overlay.dtsi |  110 +
+ .../dts/overlays/iqaudio-codec-overlay.dts    |   42 +
+ .../boot/dts/overlays/iqaudio-dac-overlay.dts |   46 +
+ .../dts/overlays/iqaudio-dacplus-overlay.dts  |   49 +
+ .../iqaudio-digi-wm8804-audio-overlay.dts     |   47 +
+ .../arm/boot/dts/overlays/irs1125-overlay.dts |   85 +
+ .../dts/overlays/jedec-spi-nor-overlay.dts    |  309 ++
+ .../dts/overlays/justboom-both-overlay.dts    |   65 +
+ .../dts/overlays/justboom-dac-overlay.dts     |   46 +
+ .../dts/overlays/justboom-digi-overlay.dts    |   41 +
+ .../arm/boot/dts/overlays/ltc294x-overlay.dts |   86 +
+ .../boot/dts/overlays/max98357a-overlay.dts   |   84 +
+ .../boot/dts/overlays/maxtherm-overlay.dts    |  186 +
+ .../boot/dts/overlays/mbed-dac-overlay.dts    |   64 +
+ .../boot/dts/overlays/mcp23017-overlay.dts    |   69 +
+ .../boot/dts/overlays/mcp23s17-overlay.dts    |  732 ++++
+ .../dts/overlays/mcp2515-can0-overlay.dts     |   73 +
+ .../dts/overlays/mcp2515-can1-overlay.dts     |   73 +
+ .../boot/dts/overlays/mcp251xfd-overlay.dts   |  226 ++
+ .../arm/boot/dts/overlays/mcp3008-overlay.dts |  205 +
+ .../arm/boot/dts/overlays/mcp3202-overlay.dts |  205 +
+ .../arm/boot/dts/overlays/mcp342x-overlay.dts |  164 +
+ .../dts/overlays/media-center-overlay.dts     |  134 +
+ .../boot/dts/overlays/merus-amp-overlay.dts   |   60 +
+ .../boot/dts/overlays/midi-uart0-overlay.dts  |   36 +
+ .../boot/dts/overlays/midi-uart1-overlay.dts  |   43 +
+ .../boot/dts/overlays/midi-uart2-overlay.dts  |   37 +
+ .../boot/dts/overlays/midi-uart3-overlay.dts  |   38 +
+ .../boot/dts/overlays/midi-uart4-overlay.dts  |   38 +
+ .../boot/dts/overlays/midi-uart5-overlay.dts  |   38 +
+ .../boot/dts/overlays/minipitft13-overlay.dts |   70 +
+ .../boot/dts/overlays/miniuart-bt-overlay.dts |   93 +
+ arch/arm/boot/dts/overlays/mmc-overlay.dts    |   46 +
+ .../arm/boot/dts/overlays/mpu6050-overlay.dts |   29 +
+ .../arm/boot/dts/overlays/mz61581-overlay.dts |  117 +
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts |   94 +
+ arch/arm/boot/dts/overlays/ov7251-overlay.dts |  113 +
+ arch/arm/boot/dts/overlays/ov9281-overlay.dts |  113 +
+ arch/arm/boot/dts/overlays/overlay_map.dts    |  158 +
+ .../arm/boot/dts/overlays/papirus-overlay.dts |   89 +
+ .../arm/boot/dts/overlays/pca953x-overlay.dts |  240 ++
+ .../dts/overlays/pcie-32bit-dma-overlay.dts   |   18 +
+ arch/arm/boot/dts/overlays/pibell-overlay.dts |   81 +
+ .../dts/overlays/pifacedigital-overlay.dts    |  144 +
+ .../arm/boot/dts/overlays/pifi-40-overlay.dts |   50 +
+ .../boot/dts/overlays/pifi-dac-hd-overlay.dts |   49 +
+ .../dts/overlays/pifi-dac-zero-overlay.dts    |   49 +
+ .../dts/overlays/pifi-mini-210-overlay.dts    |   42 +
+ arch/arm/boot/dts/overlays/piglow-overlay.dts |   97 +
+ .../boot/dts/overlays/piscreen-overlay.dts    |  102 +
+ .../boot/dts/overlays/piscreen2r-overlay.dts  |  106 +
+ .../arm/boot/dts/overlays/pisound-overlay.dts |  120 +
+ .../arm/boot/dts/overlays/pitft22-overlay.dts |   69 +
+ .../overlays/pitft28-capacitive-overlay.dts   |   91 +
+ .../overlays/pitft28-resistive-overlay.dts    |  119 +
+ .../overlays/pitft35-resistive-overlay.dts    |  119 +
+ .../boot/dts/overlays/pps-gpio-overlay.dts    |   38 +
+ .../boot/dts/overlays/pwm-2chan-overlay.dts   |   49 +
+ .../boot/dts/overlays/pwm-ir-tx-overlay.dts   |   40 +
+ arch/arm/boot/dts/overlays/pwm-overlay.dts    |   45 +
+ .../arm/boot/dts/overlays/qca7000-overlay.dts |   55 +
+ .../dts/overlays/qca7000-uart0-overlay.dts    |   46 +
+ .../dts/overlays/rotary-encoder-overlay.dts   |   59 +
+ .../dts/overlays/rpi-backlight-overlay.dts    |   21 +
+ .../overlays/rpi-cirrus-wm5102-overlay.dts    |  172 +
+ .../arm/boot/dts/overlays/rpi-dac-overlay.dts |   34 +
+ .../boot/dts/overlays/rpi-display-overlay.dts |   91 +
+ .../boot/dts/overlays/rpi-ft5406-overlay.dts  |   25 +
+ .../arm/boot/dts/overlays/rpi-poe-overlay.dts |  102 +
+ .../dts/overlays/rpi-poe-plus-overlay.dts     |   23 +
+ .../boot/dts/overlays/rpi-proto-overlay.dts   |   39 +
+ .../boot/dts/overlays/rpi-sense-overlay.dts   |   47 +
+ arch/arm/boot/dts/overlays/rpi-tv-overlay.dts |   34 +
+ .../boot/dts/overlays/rpivid-v4l2-overlay.dts |   50 +
+ .../rra-digidac1-wm8741-audio-overlay.dts     |   49 +
+ .../boot/dts/overlays/sainsmart18-overlay.dts |   52 +
+ .../dts/overlays/sc16is750-i2c-overlay.dts    |   43 +
+ .../dts/overlays/sc16is752-i2c-overlay.dts    |   43 +
+ .../dts/overlays/sc16is752-spi0-overlay.dts   |   49 +
+ .../dts/overlays/sc16is752-spi1-overlay.dts   |   67 +
+ arch/arm/boot/dts/overlays/sdhost-overlay.dts |   38 +
+ arch/arm/boot/dts/overlays/sdio-overlay.dts   |   77 +
+ .../overlays/seeed-can-fd-hat-v1-overlay.dts  |  138 +
+ .../overlays/seeed-can-fd-hat-v2-overlay.dts  |  117 +
+ .../boot/dts/overlays/sh1106-spi-overlay.dts  |   84 +
+ .../boot/dts/overlays/si446x-spi0-overlay.dts |   53 +
+ .../arm/boot/dts/overlays/smi-dev-overlay.dts |   20 +
+ .../boot/dts/overlays/smi-nand-overlay.dts    |   66 +
+ arch/arm/boot/dts/overlays/smi-overlay.dts    |   37 +
+ .../dts/overlays/spi-gpio35-39-overlay.dts    |   31 +
+ .../dts/overlays/spi-gpio40-45-overlay.dts    |   36 +
+ .../arm/boot/dts/overlays/spi-rtc-overlay.dts |   75 +
+ .../boot/dts/overlays/spi0-1cs-overlay.dts    |   42 +
+ .../boot/dts/overlays/spi0-2cs-overlay.dts    |   37 +
+ .../boot/dts/overlays/spi1-1cs-overlay.dts    |   57 +
+ .../boot/dts/overlays/spi1-2cs-overlay.dts    |   69 +
+ .../boot/dts/overlays/spi1-3cs-overlay.dts    |   81 +
+ .../boot/dts/overlays/spi2-1cs-overlay.dts    |   57 +
+ .../boot/dts/overlays/spi2-2cs-overlay.dts    |   69 +
+ .../boot/dts/overlays/spi2-3cs-overlay.dts    |   81 +
+ .../boot/dts/overlays/spi3-1cs-overlay.dts    |   44 +
+ .../boot/dts/overlays/spi3-2cs-overlay.dts    |   56 +
+ .../boot/dts/overlays/spi4-1cs-overlay.dts    |   44 +
+ .../boot/dts/overlays/spi4-2cs-overlay.dts    |   56 +
+ .../boot/dts/overlays/spi5-1cs-overlay.dts    |   44 +
+ .../boot/dts/overlays/spi5-2cs-overlay.dts    |   56 +
+ .../boot/dts/overlays/spi6-1cs-overlay.dts    |   44 +
+ .../boot/dts/overlays/spi6-2cs-overlay.dts    |   56 +
+ .../arm/boot/dts/overlays/ssd1306-overlay.dts |   36 +
+ .../boot/dts/overlays/ssd1306-spi-overlay.dts |   84 +
+ .../boot/dts/overlays/ssd1331-spi-overlay.dts |   83 +
+ .../boot/dts/overlays/ssd1351-spi-overlay.dts |   83 +
+ .../dts/overlays/superaudioboard-overlay.dts  |   73 +
+ arch/arm/boot/dts/overlays/sx150x-overlay.dts | 1706 ++++++++
+ .../dts/overlays/tc358743-audio-overlay.dts   |   52 +
+ .../boot/dts/overlays/tc358743-overlay.dts    |  107 +
+ .../boot/dts/overlays/tinylcd35-overlay.dts   |  222 ++
+ .../boot/dts/overlays/tpm-slb9670-overlay.dts |   44 +
+ arch/arm/boot/dts/overlays/uart0-overlay.dts  |   32 +
+ arch/arm/boot/dts/overlays/uart1-overlay.dts  |   38 +
+ arch/arm/boot/dts/overlays/uart2-overlay.dts  |   27 +
+ arch/arm/boot/dts/overlays/uart3-overlay.dts  |   27 +
+ arch/arm/boot/dts/overlays/uart4-overlay.dts  |   27 +
+ arch/arm/boot/dts/overlays/uart5-overlay.dts  |   27 +
+ arch/arm/boot/dts/overlays/udrc-overlay.dts   |  128 +
+ .../dts/overlays/ugreen-dabboard-overlay.dts  |   49 +
+ .../boot/dts/overlays/upstream-overlay.dts    |  101 +
+ .../dts/overlays/upstream-pi4-overlay.dts     |  137 +
+ .../dts/overlays/vc4-fkms-v3d-overlay.dts     |   40 +
+ .../dts/overlays/vc4-fkms-v3d-pi4-overlay.dts |   44 +
+ .../vc4-kms-dpi-at056tn53v1-overlay.dts       |   44 +
+ .../overlays/vc4-kms-dsi-7inch-overlay.dts    |  118 +
+ .../vc4-kms-dsi-lt070me05000-overlay.dts      |   69 +
+ .../vc4-kms-dsi-lt070me05000-v2-overlay.dts   |   64 +
+ .../overlays/vc4-kms-kippah-7inch-overlay.dts |   43 +
+ .../boot/dts/overlays/vc4-kms-v3d-overlay.dts |  123 +
+ .../dts/overlays/vc4-kms-v3d-pi4-overlay.dts  |  197 +
+ .../dts/overlays/vc4-kms-vga666-overlay.dts   |  100 +
+ arch/arm/boot/dts/overlays/vga666-overlay.dts |   30 +
+ .../arm/boot/dts/overlays/w1-gpio-overlay.dts |   40 +
+ .../dts/overlays/w1-gpio-pullup-overlay.dts   |   42 +
+ arch/arm/boot/dts/overlays/w5500-overlay.dts  |   63 +
+ .../arm/boot/dts/overlays/wittypi-overlay.dts |   44 +
+ .../dts/overlays/wm8960-soundcard-overlay.dts |   82 +
+ arch/arm64/boot/dts/Makefile                  |    2 +
+ arch/arm64/boot/dts/broadcom/Makefile         |   12 +
+ .../boot/dts/broadcom/bcm2710-rpi-2-b.dts     |    1 +
+ .../dts/broadcom/bcm2710-rpi-3-b-plus.dts     |    1 +
+ .../boot/dts/broadcom/bcm2710-rpi-3-b.dts     |    1 +
+ .../boot/dts/broadcom/bcm2710-rpi-cm3.dts     |    1 +
+ .../boot/dts/broadcom/bcm2711-rpi-4-b.dts     |    3 +-
+ .../boot/dts/broadcom/bcm2711-rpi-400.dts     |    3 +-
+ .../boot/dts/broadcom/bcm2711-rpi-cm4.dts     |    1 +
+ .../dts/broadcom/bcm283x-rpi-csi1-2lane.dtsi  |    1 +
+ .../dts/broadcom/bcm283x-rpi-lan7515.dtsi     |    1 +
+ arch/arm64/boot/dts/overlays                  |    1 +
+ scripts/Makefile.dtbinst                      |    3 +-
+ scripts/Makefile.lib                          |   13 +
+ 308 files changed, 27244 insertions(+), 48 deletions(-)
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b.dts
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-bt.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-cm.dts
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi-zero.dts
+ create mode 100644 arch/arm/boot/dts/bcm2708-rpi.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm2708.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+ create mode 100644 arch/arm/boot/dts/bcm2709-rpi.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm2709.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm270x-rpi.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm270x.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm2710-rpi-2-b.dts
+ create mode 100644 arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
+ create mode 100644 arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+ create mode 100644 arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+ create mode 100644 arch/arm/boot/dts/bcm2710.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+ create mode 100644 arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm271x-rpi-bt.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm283x-rpi-cam1-regulator.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm283x-rpi-csi0-2lane.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm283x-rpi-csi1-2lane.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm283x-rpi-csi1-4lane.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_28.dtsi
+ create mode 100644 arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_44.dtsi
+ create mode 100644 arch/arm/boot/dts/overlays/Makefile
+ create mode 100644 arch/arm/boot/dts/overlays/README
+ create mode 100644 arch/arm/boot/dts/overlays/act-led-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/adafruit18-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/adau7002-simple-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ads1015-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ads1115-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ads7846-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/adv7282m-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/adv728x-m-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/allo-boss-dac-pcm512x-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/allo-boss2-dac-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/allo-digione-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/allo-piano-dac-pcm512x-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/allo-piano-dac-plus-pcm512x-audio-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/anyspi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/apds9960-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/applepi-dac-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/at86rf233-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/audioinjector-isolated-soundcard-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/audioinjector-ultra-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/audioinjector-wm8731-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/audremap-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/balena-fin-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/cap1106-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/chipdip-dac-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/cma-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dht11-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dionaudio-loco-v2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/disable-bt-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/disable-wifi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dpi18-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dpi18cpadhi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dpi24-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/draws-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dwc-otg-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/dwc2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/edt-ft5406-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/edt-ft5406.dtsi
+ create mode 100644 arch/arm/boot/dts/overlays/enc28j60-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/exc3000-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/fsm-demo-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ghost-amp-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/goodix-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/googlevoicehat-soundcard-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-ir-tx-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-key-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/gpio-led-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hd44780-lcd-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hdmi-backlight-hwhack-gpio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplusadc-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplusdsp-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplushd-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/highperi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hy28a-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/hy28b-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i-sabre-q2m-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-bcm2708-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-mux-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-pwm-pca9685a-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c0-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c3-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c4-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c5-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2c6-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ilitek251x-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/imx219-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/imx290-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
+ create mode 100644 arch/arm/boot/dts/overlays/imx378-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/imx477-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
+ create mode 100644 arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/irs1125-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/justboom-both-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/justboom-dac-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/justboom-digi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ltc294x-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/max98357a-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/maxtherm-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mbed-dac-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mcp23017-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mcp23s17-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/mcp3008-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/mcp3202-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mcp342x-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/media-center-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/merus-amp-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/midi-uart0-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/midi-uart1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/midi-uart2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/midi-uart3-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/midi-uart4-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/midi-uart5-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/minipitft13-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mmc-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mpu6050-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/mz61581-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ov5647-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ov7251-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ov9281-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/overlay_map.dts
+ create mode 100644 arch/arm/boot/dts/overlays/papirus-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pca953x-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pcie-32bit-dma-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pibell-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pifacedigital-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pifi-40-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pifi-dac-hd-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pifi-dac-zero-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pifi-mini-210-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/piglow-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/piscreen-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pisound-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pitft22-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pwm-ir-tx-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/pwm-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/qca7000-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-backlight-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-display-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-sense-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpi-tv-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/rra-digidac1-wm8741-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sc16is752-i2c-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sc16is752-spi0-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sdhost-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sdio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/seeed-can-fd-hat-v1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/seeed-can-fd-hat-v2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sh1106-spi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/si446x-spi0-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/smi-dev-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/smi-nand-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/smi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi-gpio40-45-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi0-1cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi0-2cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi1-1cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi1-2cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi1-3cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi2-1cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi2-2cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi2-3cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi3-1cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi3-2cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi4-1cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi4-2cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi5-1cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi5-2cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi6-1cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/spi6-2cs-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ssd1306-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ssd1306-spi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ssd1331-spi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ssd1351-spi-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/superaudioboard-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/sx150x-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/tc358743-audio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/tc358743-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/tpm-slb9670-overlay.dts
+ create mode 100755 arch/arm/boot/dts/overlays/uart0-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/uart1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/uart2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/uart3-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/uart4-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/uart5-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/udrc-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/ugreen-dabboard-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/upstream-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/upstream-pi4-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-fkms-v3d-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-fkms-v3d-pi4-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-v2-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-vga666-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vga666-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/w5500-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/wittypi-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/wm8960-soundcard-overlay.dts
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm2710-rpi-2-b.dts
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b-plus.dts
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b.dts
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm2710-rpi-cm3.dts
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4.dts
+ create mode 120000 arch/arm64/boot/dts/broadcom/bcm283x-rpi-csi1-2lane.dtsi
+ create mode 120000 arch/arm64/boot/dts/broadcom/bcm283x-rpi-lan7515.dtsi
+ create mode 120000 arch/arm64/boot/dts/overlays
+
+diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
+index 27ca1ca6e827..ab6a5c6ea5ee 100644
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -1,4 +1,11 @@
+ # SPDX-License-Identifier: GPL-2.0
++
++dtb-$(CONFIG_ARCH_BCM2835) += \
++	bcm2708-rpi-b-rev1.dtb \
++	bcm2708-rpi-cm.dtb \
++	bcm2710-rpi-cm3.dtb \
++	bcm2711-rpi-cm4.dtb
++
+ dtb-$(CONFIG_ARCH_ALPINE) += \
+ 	alpine-db.dtb
+ dtb-$(CONFIG_MACH_ARTPEC6) += \
+@@ -1499,3 +1506,13 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
+ 	aspeed-bmc-portwell-neptune.dtb \
+ 	aspeed-bmc-quanta-q71l.dtb \
+ 	aspeed-bmc-supermicro-x11spi.dtb
++
++targets += dtbs dtbs_install
++targets += $(dtb-y)
++
++subdir-y	:= overlays
++
++# Enable fixups to support overlays on BCM2835 platforms
++ifeq ($(CONFIG_ARCH_BCM2835),y)
++	DTC_FLAGS += -@
++endif
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
+new file mode 100644
+index 000000000000..e42cba84ab0e
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
+@@ -0,0 +1,129 @@
++/dts-v1/;
++
++#include "bcm2708.dtsi"
++#include "bcm2708-rpi.dtsi"
++#include "bcm283x-rpi-smsc9514.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
++	model = "Raspberry Pi Model B+";
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <40 45>;
++		brcm,function = <4>;
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 47 0>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "input";
++		gpios = <&gpio 35 0>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts b/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
+new file mode 100644
+index 000000000000..4ea1e68f5e29
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
+@@ -0,0 +1,132 @@
++/dts-v1/;
++
++#include "bcm2708.dtsi"
++#include "bcm2708-rpi.dtsi"
++#include "bcm283x-rpi-smsc9512.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,model-b", "brcm,bcm2835";
++	model = "Raspberry Pi Model B";
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <28 29 30 31>;
++		brcm,function = <6>; /* alt2 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <40 45>;
++		brcm,function = <4>;
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++/delete-node/ &i2c0mux;
++
++i2c0: &i2c0if {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c0_pins>;
++	clock-frequency = <100000>;
++};
++
++i2c_csi_dsi: &i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++/ {
++	aliases {
++		i2c0 = &i2c0;
++	};
++
++	__overrides__ {
++		i2c0 = <&i2c0>, "status";
++	};
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 16 1>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 27 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-b.dts b/arch/arm/boot/dts/bcm2708-rpi-b.dts
+new file mode 100644
+index 000000000000..a152c1c8e648
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
+@@ -0,0 +1,119 @@
++/dts-v1/;
++
++#include "bcm2708.dtsi"
++#include "bcm2708-rpi.dtsi"
++#include "bcm283x-rpi-smsc9512.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,model-b", "brcm,bcm2835";
++	model = "Raspberry Pi Model B";
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <28 29 30 31>;
++		brcm,function = <6>; /* alt2 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <40 45>;
++		brcm,function = <4>;
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 16 1>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 21 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-bt.dtsi b/arch/arm/boot/dts/bcm2708-rpi-bt.dtsi
+new file mode 100644
+index 000000000000..a18f80af97d3
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-bt.dtsi
+@@ -0,0 +1,26 @@
++// SPDX-License-Identifier: GPL-2.0
++
++&uart0 {
++	bt: bluetooth {
++		compatible = "brcm,bcm43438-bt";
++		max-speed = <3000000>;
++		shutdown-gpios = <&gpio 45 GPIO_ACTIVE_HIGH>;
++		status = "disabled";
++	};
++};
++
++&uart1 {
++	minibt: bluetooth {
++		compatible = "brcm,bcm43438-bt";
++		max-speed = <460800>;
++		shutdown-gpios = <&gpio 45 GPIO_ACTIVE_HIGH>;
++		status = "disabled";
++	};
++};
++
++/ {
++	__overrides__ {
++		krnbt = <&bt>,"status";
++		krnbt_baudrate = <&bt>,"max-speed:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-cm.dts b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
+new file mode 100644
+index 000000000000..f61e3418425a
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
+@@ -0,0 +1,112 @@
++/dts-v1/;
++
++#include "bcm2708-rpi-cm.dtsi"
++#include "bcm283x-rpi-csi0-2lane.dtsi"
++#include "bcm283x-rpi-csi1-4lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++
++/ {
++	compatible = "raspberrypi,compute-module", "brcm,bcm2835";
++	model = "Raspberry Pi Compute Module";
++
++	cam1_reg: cam1_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam1-regulator";
++		gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++		enable-active-high;
++		status = "disabled";
++	};
++	cam0_reg: cam0_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam0-regulator";
++		gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
++		enable-active-high;
++		status = "disabled";
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins;
++		brcm,function;
++	};
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
+new file mode 100644
+index 000000000000..d5572b2d2103
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
+@@ -0,0 +1,18 @@
++#include "bcm2708.dtsi"
++#include "bcm2708-rpi.dtsi"
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 47 0>;
++	};
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
+new file mode 100644
+index 000000000000..75a5b41514f9
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
+@@ -0,0 +1,169 @@
++/dts-v1/;
++
++#include "bcm2708.dtsi"
++#include "bcm2708-rpi.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++#include "bcm2708-rpi-bt.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
++	model = "Raspberry Pi Zero W";
++
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc1 = &mmcnr;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins = <34 35 36 37 38 39>;
++		brcm,function = <7>; /* ALT3 = SD1 */
++		brcm,pull = <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = <43>;
++		brcm,function = <4>; /* alt0:GPCLK2 */
++		brcm,pull = <0>; /* none */
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <30 31 32 33>;
++		brcm,function = <7>; /* alt3=UART0 */
++		brcm,pull = <2 0 0 2>; /* up none none up */
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <>;
++		brcm,function = <>;
++	};
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_pins>;
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "actpwr";
++		gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++	brcm,disable-headphones = <1>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 44 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi-zero.dts b/arch/arm/boot/dts/bcm2708-rpi-zero.dts
+new file mode 100644
+index 000000000000..84591bd7d423
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero.dts
+@@ -0,0 +1,123 @@
++/dts-v1/;
++
++#include "bcm2708.dtsi"
++#include "bcm2708-rpi.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,model-zero", "brcm,bcm2835";
++	model = "Raspberry Pi Zero";
++
++	chosen {
++		bootargs = "coherent_pool=1M snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <>;
++		brcm,function = <>;
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "actpwr";
++		gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++	brcm,disable-headphones = <1>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2708-rpi.dtsi b/arch/arm/boot/dts/bcm2708-rpi.dtsi
+new file mode 100644
+index 000000000000..e2458b15d64a
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708-rpi.dtsi
+@@ -0,0 +1,36 @@
++/* Downstream modifications common to bcm2835, bcm2836, bcm2837 */
++
++#include "bcm2835-rpi.dtsi"
++#include "bcm270x-rpi.dtsi"
++
++/ {
++	memory@0 {
++		device_type = "memory";
++		reg = <0x0 0x0>;
++	};
++
++	aliases {
++		i2c2 = &i2c2;
++	};
++
++	__overrides__ {
++		i2c2_iknowwhatimdoing = <&i2c2>,"status";
++		i2c2_baudrate = <&i2c2>,"clock-frequency:0";
++		sd_poll_once = <&sdhost>,"non-removable?";
++	};
++};
++
++&sdhost {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdhost_gpio48>;
++	status = "okay";
++};
++
++&hdmi {
++	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
++	status = "disabled";
++};
++
++&i2c2 {
++	status = "disabled";
++};
+diff --git a/arch/arm/boot/dts/bcm2708.dtsi b/arch/arm/boot/dts/bcm2708.dtsi
+new file mode 100644
+index 000000000000..36ec4989403f
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2708.dtsi
+@@ -0,0 +1,12 @@
++#include "bcm2835.dtsi"
++#include "bcm270x.dtsi"
++
++/ {
++	__overrides__ {
++		arm_freq;
++	};
++};
++
++&vc4 {
++	status = "disabled";
++};
+diff --git a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+new file mode 100644
+index 000000000000..e1381d2b3a2c
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+@@ -0,0 +1,129 @@
++/dts-v1/;
++
++#include "bcm2709.dtsi"
++#include "bcm2709-rpi.dtsi"
++#include "bcm283x-rpi-smsc9514.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
++	model = "Raspberry Pi 2 Model B";
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <40 45>;
++		brcm,function = <4>;
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 47 0>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "input";
++		gpios = <&gpio 35 0>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2709-rpi.dtsi b/arch/arm/boot/dts/bcm2709-rpi.dtsi
+new file mode 100644
+index 000000000000..babfa41cd9f7
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2709-rpi.dtsi
+@@ -0,0 +1,5 @@
++#include "bcm2708-rpi.dtsi"
++
++&vchiq {
++	compatible = "brcm,bcm2836-vchiq", "brcm,bcm2835-vchiq";
++};
+diff --git a/arch/arm/boot/dts/bcm2709.dtsi b/arch/arm/boot/dts/bcm2709.dtsi
+new file mode 100644
+index 000000000000..68eafc1b281a
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2709.dtsi
+@@ -0,0 +1,22 @@
++#include "bcm2836.dtsi"
++#include "bcm270x.dtsi"
++
++/ {
++	soc {
++		ranges = <0x7e000000 0x3f000000 0x01000000>,
++		         <0x40000000 0x40000000 0x00040000>;
++
++		/delete-node/ timer@7e003000;
++	};
++
++	__overrides__ {
++		arm_freq = <&v7_cpu0>, "clock-frequency:0",
++			   <&v7_cpu1>, "clock-frequency:0",
++			   <&v7_cpu2>, "clock-frequency:0",
++			   <&v7_cpu3>, "clock-frequency:0";
++	};
++};
++
++&vc4 {
++	status = "disabled";
++};
+diff --git a/arch/arm/boot/dts/bcm270x-rpi.dtsi b/arch/arm/boot/dts/bcm270x-rpi.dtsi
+new file mode 100644
+index 000000000000..68a7e1c09db1
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi
+@@ -0,0 +1,154 @@
++/* Downstream modifications to bcm2835-rpi.dtsi */
++
++/ {
++	aliases {
++		audio = &audio;
++		aux = &aux;
++		sound = &sound;
++		soc = &soc;
++		dma = &dma;
++		intc = &intc;
++		watchdog = &watchdog;
++		random = &random;
++		mailbox = &mailbox;
++		gpio = &gpio;
++		uart0 = &uart0;
++		uart1 = &uart1;
++		sdhost = &sdhost;
++		mmc = &mmc;
++		mmc1 = &mmc;
++		mmc0 = &sdhost;
++		i2s = &i2s;
++		i2c0 = &i2c0;
++		i2c1 = &i2c1;
++		i2c10 = &i2c_csi_dsi;
++		spi0 = &spi0;
++		spi1 = &spi1;
++		spi2 = &spi2;
++		usb = &usb;
++		leds = &leds;
++		fb = &fb;
++		thermal = &thermal;
++		axiperf = &axiperf;
++	};
++
++	/* Define these notional regulators for use by overlays */
++	vdd_3v3_reg: fixedregulator_3v3 {
++		compatible = "regulator-fixed";
++		regulator-always-on;
++		regulator-max-microvolt = <3300000>;
++		regulator-min-microvolt = <3300000>;
++		regulator-name = "3v3";
++	};
++
++	vdd_5v0_reg: fixedregulator_5v0 {
++		compatible = "regulator-fixed";
++		regulator-always-on;
++		regulator-max-microvolt = <5000000>;
++		regulator-min-microvolt = <5000000>;
++		regulator-name = "5v0";
++	};
++
++	leds: leds {
++		compatible = "gpio-leds";
++	};
++
++	soc {
++		gpiomem {
++			compatible = "brcm,bcm2835-gpiomem";
++			reg = <0x7e200000 0x1000>;
++		};
++
++		fb: fb {
++			compatible = "brcm,bcm2708-fb";
++			firmware = <&firmware>;
++			status = "okay";
++		};
++
++		vcsm: vcsm {
++			compatible = "raspberrypi,bcm2835-vcsm";
++			firmware = <&firmware>;
++			status = "okay";
++		};
++
++		/* External sound card */
++		sound: sound {
++			status = "disabled";
++		};
++	};
++
++	__overrides__ {
++		cache_line_size;
++
++		uart0 = <&uart0>,"status";
++		uart1 = <&uart1>,"status";
++		i2s = <&i2s>,"status";
++		spi = <&spi0>,"status";
++		i2c0 = <&i2c0if>,"status",<&i2c0mux>,"status";
++		i2c1 = <&i2c1>,"status";
++		i2c0_baudrate = <&i2c0if>,"clock-frequency:0";
++		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
++
++		audio = <&audio>,"status";
++		watchdog = <&watchdog>,"status";
++		random = <&random>,"status";
++		sd_overclock = <&sdhost>,"brcm,overclock-50:0";
++		sd_force_pio = <&sdhost>,"brcm,force-pio?";
++		sd_pio_limit = <&sdhost>,"brcm,pio-limit:0";
++		sd_debug     = <&sdhost>,"brcm,debug";
++		sdio_overclock = <&mmc>,"brcm,overclock-50:0",
++				 <&mmcnr>,"brcm,overclock-50:0";
++		axiperf      = <&axiperf>,"status";
++	};
++};
++
++&uart0 {
++	skip-init;
++};
++
++&uart1 {
++	skip-init;
++};
++
++&txp {
++	status = "disabled";
++};
++
++&i2c0if {
++	status = "disabled";
++};
++
++&i2c0mux {
++	status = "disabled";
++};
++
++&i2c1 {
++	status = "disabled";
++};
++
++&clocks {
++	firmware = <&firmware>;
++};
++
++&sdhci {
++	pinctrl-names = "default";
++	pinctrl-0 = <&emmc_gpio48>;
++	bus-width = <4>;
++};
++
++&cpu_thermal {
++	/delete-node/ trips;
++};
++
++&vec {
++	status = "disabled";
++};
++
++&vchiq {
++	/* Onboard audio */
++	audio: bcm2835_audio {
++		compatible = "brcm,bcm2835-audio";
++		brcm,pwm-channels = <8>;
++		status = "disabled";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm270x.dtsi b/arch/arm/boot/dts/bcm270x.dtsi
+new file mode 100644
+index 000000000000..badcf341ecd2
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm270x.dtsi
+@@ -0,0 +1,217 @@
++/* Downstream bcm283x.dtsi diff */
++#include <dt-bindings/power/raspberrypi-power.h>
++
++/ {
++	chosen {
++		bootargs = "coherent_pool=1M snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++		/delete-property/ stdout-path;
++	};
++
++	soc: soc {
++
++		watchdog: watchdog@7e100000 {
++			/* Add label */
++		};
++
++		random: rng@7e104000 {
++			/* Add label */
++		};
++
++		spi0: spi@7e204000 {
++			/* Add label */
++		};
++
++#ifndef BCM2711
++		pixelvalve0: pixelvalve@7e206000 {
++			/* Add label */
++			status = "disabled";
++		};
++
++		pixelvalve1: pixelvalve@7e207000 {
++			/* Add label */
++			status = "disabled";
++		};
++#endif
++
++		/delete-node/ mmc@7e300000;
++
++		sdhci: mmc: mmc@7e300000 {
++			compatible = "brcm,bcm2835-mmc", "brcm,bcm2835-sdhci";
++			reg = <0x7e300000 0x100>;
++			interrupts = <2 30>;
++			clocks = <&clocks BCM2835_CLOCK_EMMC>;
++			dmas = <&dma 11>;
++			dma-names = "rx-tx";
++			brcm,overclock-50 = <0>;
++			status = "disabled";
++		};
++
++		/* A clone of mmc but with non-removable set */
++		mmcnr: mmcnr@7e300000 {
++			compatible = "brcm,bcm2835-mmc", "brcm,bcm2835-sdhci";
++			reg = <0x7e300000 0x100>;
++			interrupts = <2 30>;
++			clocks = <&clocks BCM2835_CLOCK_EMMC>;
++			dmas = <&dma 11>;
++			dma-names = "rx-tx";
++			brcm,overclock-50 = <0>;
++			non-removable;
++			status = "disabled";
++		};
++
++		hvs: hvs@7e400000 {
++			/* Add label */
++			status = "disabled";
++		};
++
++		firmwarekms: firmwarekms@7e600000 {
++			compatible = "raspberrypi,rpi-firmware-kms";
++			/* SMI interrupt reg */
++			reg = <0x7e600000 0x100>;
++			interrupts = <2 16>;
++			brcm,firmware = <&firmware>;
++			status = "disabled";
++		};
++
++		smi: smi@7e600000 {
++			compatible = "brcm,bcm2835-smi";
++			reg = <0x7e600000 0x100>;
++			interrupts = <2 16>;
++			clocks = <&clocks BCM2835_CLOCK_SMI>;
++			assigned-clocks = <&clocks BCM2835_CLOCK_SMI>;
++			assigned-clock-rates = <125000000>;
++			dmas = <&dma 4>;
++			dma-names = "rx-tx";
++			status = "disabled";
++		};
++
++		csi0: csi@7e800000 {
++			compatible = "brcm,bcm2835-unicam";
++			reg = <0x7e800000 0x800>,
++			      <0x7e802000 0x4>;
++			interrupts = <2 6>;
++			clocks = <&clocks BCM2835_CLOCK_CAM0>,
++				 <&firmware_clocks 4>;
++			clock-names = "lp", "vpu";
++			power-domains = <&power RPI_POWER_DOMAIN_UNICAM0>;
++			#address-cells = <1>;
++			#size-cells = <0>;
++			#clock-cells = <1>;
++			status = "disabled";
++		};
++
++		csi1: csi@7e801000 {
++			compatible = "brcm,bcm2835-unicam";
++			reg = <0x7e801000 0x800>,
++			      <0x7e802004 0x4>;
++			interrupts = <2 7>;
++			clocks = <&clocks BCM2835_CLOCK_CAM1>,
++				 <&firmware_clocks 4>;
++			clock-names = "lp", "vpu";
++			power-domains = <&power RPI_POWER_DOMAIN_UNICAM1>;
++			#address-cells = <1>;
++			#size-cells = <0>;
++			#clock-cells = <1>;
++			status = "disabled";
++		};
++
++#ifndef BCM2711
++		pixelvalve2: pixelvalve@7e807000 {
++			/* Add label */
++			status = "disabled";
++		};
++#endif
++
++		hdmi@7e902000 { /* hdmi */
++			status = "disabled";
++		};
++
++		usb@7e980000 { /* usb */
++			compatible = "brcm,bcm2708-usb";
++			reg = <0x7e980000 0x10000>,
++			      <0x7e006000 0x1000>;
++			interrupt-names = "usb",
++					  "soft";
++			interrupts = <1 9>,
++				     <2 0>;
++		};
++
++#ifndef BCM2711
++		v3d@7ec00000 { /* vd3 */
++			compatible = "brcm,vc4-v3d";
++			power-domains = <&power RPI_POWER_DOMAIN_V3D>;
++			status = "disabled";
++		};
++#endif
++
++		axiperf: axiperf {
++			compatible = "brcm,bcm2835-axiperf";
++			reg = <0x7e009800 0x100>,
++			      <0x7ee08000 0x100>;
++			firmware = <&firmware>;
++			status = "disabled";
++		};
++	};
++
++	__overrides__ {
++		cam0-pwdn-ctrl;
++		cam0-pwdn;
++		cam0-led-ctrl;
++		cam0-led;
++	};
++};
++
++&gpio {
++	interrupts = <2 17>, <2 18>;
++
++	dpi_18bit_cpadhi_gpio0: dpi_18bit_cpadhi_gpio0 {
++		brcm,pins = <0 1 2 3 4 5 6 7 8 9
++			     12 13 14 15 16 17
++			     20 21 22 23 24 25>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++		brcm,pull = <0>; /* no pull */
++	};
++	dpi_18bit_cpadhi_gpio2: dpi_18bit_cpadhi_gpio2 {
++		brcm,pins = <2 3 4 5 6 7 8 9
++			     12 13 14 15 16 17
++			     20 21 22 23 24 25>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++	};
++	dpi_18bit_gpio0: dpi_18bit_gpio0 {
++		brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
++			     12 13 14 15 16 17 18 19
++			     20 21>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++	};
++	dpi_18bit_gpio2: dpi_18bit_gpio2 {
++		brcm,pins = <2 3 4 5 6 7 8 9 10 11
++			     12 13 14 15 16 17 18 19
++			     20 21>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++	};
++};
++
++&uart0 {
++	/* Enable CTS bug workaround */
++	cts-event-workaround;
++};
++
++&i2s {
++	#sound-dai-cells = <0>;
++	dmas = <&dma 2>, <&dma 3>;
++	dma-names = "tx", "rx";
++};
++
++&sdhost {
++	dmas = <&dma (13|(1<<29))>;
++	dma-names = "rx-tx";
++	bus-width = <4>;
++	brcm,overclock-50 = <0>;
++	brcm,pio-limit = <1>;
++	firmware = <&firmware>;
++};
++
++&spi0 {
++	dmas = <&dma 6>, <&dma 7>;
++	dma-names = "tx", "rx";
++};
+diff --git a/arch/arm/boot/dts/bcm2710-rpi-2-b.dts b/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
+new file mode 100644
+index 000000000000..ae9db1b1be1b
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
+@@ -0,0 +1,129 @@
++/dts-v1/;
++
++#include "bcm2710.dtsi"
++#include "bcm2709-rpi.dtsi"
++#include "bcm283x-rpi-smsc9514.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,2-model-b-rev2", "brcm,bcm2837";
++	model = "Raspberry Pi 2 Model B rev 1.2";
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <40 45>;
++		brcm,function = <4>;
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 47 0>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "input";
++		gpios = <&gpio 35 0>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
+new file mode 100644
+index 000000000000..7e12c05cc28b
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
+@@ -0,0 +1,201 @@
++/dts-v1/;
++
++#include "bcm2710.dtsi"
++#include "bcm2709-rpi.dtsi"
++#include "bcm283x-rpi-lan7515.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm271x-rpi-bt.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
++	model = "Raspberry Pi 3 Model B+";
++
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc1 = &mmcnr;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <7>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = <43>;
++		brcm,function = <4>; /* alt0:GPCLK2 */
++		brcm,pull = <0>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <32 33>;
++		brcm,function = <7>; /* alt3=UART0 */
++		brcm,pull = <0 2>;
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <40 41>;
++		brcm,function = <4>;
++	};
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&firmware {
++	expgpio: expgpio {
++		compatible = "raspberrypi,firmware-gpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		status = "okay";
++	};
++};
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_pins>;
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 29 0>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "default-on";
++		gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&eth_phy {
++	microchip,eee-enabled;
++	microchip,tx-lpi-timer = <600>; /* non-aggressive*/
++	microchip,downshift-after = <2>;
++};
++
++&cam1_reg {
++	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++
++		eee = <&eth_phy>,"microchip,eee-enabled?";
++		tx_lpi_timer = <&eth_phy>,"microchip,tx-lpi-timer:0";
++		eth_led0 = <&eth_phy>,"microchip,led-modes:0";
++		eth_led1 = <&eth_phy>,"microchip,led-modes:4";
++		eth_downshift_after = <&eth_phy>,"microchip,downshift-after:0";
++		eth_max_speed = <&eth_phy>,"max-speed:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+new file mode 100644
+index 000000000000..d40722ddc286
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+@@ -0,0 +1,203 @@
++/dts-v1/;
++
++#include "bcm2710.dtsi"
++#include "bcm2709-rpi.dtsi"
++#include "bcm283x-rpi-smsc9514.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm271x-rpi-bt.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
++	model = "Raspberry Pi 3 Model B";
++
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc1 = &mmcnr;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <7>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = <43>;
++		brcm,function = <4>; /* alt0:GPCLK2 */
++		brcm,pull = <0>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <32 33>;
++		brcm,function = <7>; /* alt3=UART0 */
++		brcm,pull = <0 2>;
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <40 41>;
++		brcm,function = <4>;
++	};
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&soc {
++	virtgpio: virtgpio {
++		compatible = "brcm,bcm2835-virtgpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		firmware = <&firmware>;
++		status = "okay";
++	};
++
++};
++
++&firmware {
++	expgpio: expgpio {
++		compatible = "raspberrypi,firmware-gpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		status = "okay";
++	};
++};
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_pins>;
++	status = "okay";
++};
++
++&bt {
++	max-speed = <921600>;
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&virtgpio 0 0>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "input";
++		gpios = <&expgpio 7 0>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&cam1_reg {
++	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2710-rpi-cm3.dts b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+new file mode 100644
+index 000000000000..c386a855cdc3
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+@@ -0,0 +1,148 @@
++/dts-v1/;
++
++#include "bcm2710.dtsi"
++#include "bcm2709-rpi.dtsi"
++#include "bcm283x-rpi-csi0-2lane.dtsi"
++#include "bcm283x-rpi-csi1-4lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
++/ {
++	compatible = "raspberrypi,3-compute-module", "brcm,bcm2837";
++	model = "Raspberry Pi Compute Module 3";
++
++	cam1_reg: cam1_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam1-regulator";
++		gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++		enable-active-high;
++		status = "disabled";
++	};
++	cam0_reg: cam0_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam0-regulator";
++		gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
++		enable-active-high;
++		status = "disabled";
++	};
++};
++
++&uart0 {
++	status = "okay";
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins;
++		brcm,function;
++	};
++};
++
++&soc {
++	virtgpio: virtgpio {
++		compatible = "brcm,bcm2835-virtgpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		firmware = <&firmware>;
++		status = "okay";
++	};
++
++};
++
++&firmware {
++	expgpio: expgpio {
++		compatible = "raspberrypi,firmware-gpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		status = "okay";
++	};
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&virtgpio 0 0>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&expgpio 0 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2710.dtsi b/arch/arm/boot/dts/bcm2710.dtsi
+new file mode 100644
+index 000000000000..e7e5c913f1d1
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2710.dtsi
+@@ -0,0 +1,25 @@
++#include "bcm2837.dtsi"
++#include "bcm270x.dtsi"
++
++/ {
++	compatible = "brcm,bcm2837", "brcm,bcm2836";
++
++	arm-pmu {
++		compatible = "arm,cortex-a53-pmu", "arm,cortex-a7-pmu";
++	};
++
++	soc {
++		/delete-node/ timer@7e003000;
++	};
++
++	__overrides__ {
++		arm_freq = <&cpu0>, "clock-frequency:0",
++		       <&cpu1>, "clock-frequency:0",
++		       <&cpu2>, "clock-frequency:0",
++		       <&cpu3>, "clock-frequency:0";
++	};
++};
++
++&vc4 {
++	status = "disabled";
++};
+diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+index 72ce80fbf266..f6e0247f7d1b 100644
+--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+@@ -2,7 +2,7 @@
+ /dts-v1/;
+ #include "bcm2711.dtsi"
+ #include "bcm2711-rpi.dtsi"
+-#include "bcm283x-rpi-usb-peripheral.dtsi"
++//#include "bcm283x-rpi-usb-peripheral.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
+@@ -72,7 +72,7 @@ &expgpio {
+ 			  "VDD_SD_IO_SEL",
+ 			  "CAM_GPIO",
+ 			  "SD_PWR_ON",
+-			  "";
++			  "SD_OC_N";
+ };
+ 
+ &gpio {
+@@ -260,3 +260,309 @@ &vc4 {
+ &vec {
+ 	status = "disabled";
+ };
++
++// =============================================
++// Downstream rpi- changes
++
++#define BCM2711
++
++#include "bcm270x.dtsi"
++#include "bcm271x-rpi-bt.dtsi"
++
++/ {
++	soc {
++		/delete-node/ pixelvalve@7e807000;
++		/delete-node/ hdmi@7e902000;
++	};
++};
++
++#include "bcm2711-rpi-ds.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc0 = &emmc2;
++		mmc1 = &mmcnr;
++		mmc2 = &sdhost;
++		i2c3 = &i2c3;
++		i2c4 = &i2c4;
++		i2c5 = &i2c5;
++		i2c6 = &i2c6;
++		i2c20 = &ddc0;
++		i2c21 = &ddc1;
++		spi3 = &spi3;
++		spi4 = &spi4;
++		spi5 = &spi5;
++		spi6 = &spi6;
++		/delete-property/ intc;
++	};
++
++	/delete-node/ wifi-pwrseq;
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&uart0 {
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-0 = <&uart1_pins>;
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi3_pins: spi3_pins {
++		brcm,pins = <1 2 3>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi3_cs_pins: spi3_cs_pins {
++		brcm,pins = <0 24>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi4_pins: spi4_pins {
++		brcm,pins = <5 6 7>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi4_cs_pins: spi4_cs_pins {
++		brcm,pins = <4 25>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi5_pins: spi5_pins {
++		brcm,pins = <13 14 15>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi5_cs_pins: spi5_cs_pins {
++		brcm,pins = <12 26>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi6_pins: spi6_pins {
++		brcm,pins = <19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi6_cs_pins: spi6_cs_pins {
++		brcm,pins = <18 27>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c3_pins: i2c3 {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c4_pins: i2c4 {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c5_pins: i2c5 {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c6_pins: i2c6 {
++		brcm,pins = <22 23>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <BCM2835_FSEL_ALT3>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = "-"; // non-empty to keep btuart happy, //4 = 0
++				 // to fool pinctrl
++		brcm,function = <0>;
++		brcm,pull = <2>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <32 33>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++		brcm,pull = <0 2>;
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	uart2_pins: uart2_pins {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart3_pins: uart3_pins {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart4_pins: uart4_pins {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart5_pins: uart5_pins {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++// =============================================
++// Board specific stuff here
++
++&sdhost {
++	status = "disabled";
++};
++
++&phy1 {
++	led-modes = <0x00 0x08>; /* link/activity link */
++};
++
++&gpio {
++	audio_pins: audio_pins {
++		brcm,pins = <40 41>;
++		brcm,function = <4>;
++	};
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "default-on";
++		gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&pwm1 {
++	status = "disabled";
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++};
++
++&cam1_reg {
++	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++
++		eth_led0 = <&phy1>,"led-modes:0";
++		eth_led1 = <&phy1>,"led-modes:4";
++
++		sd_poll_once = <&emmc2>, "non-removable?";
++		spi_dma4 = <&spi0>, "dmas:0=", <&dma40>,
++			   <&spi0>, "dmas:8=", <&dma40>;
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2711-rpi-400.dts b/arch/arm/boot/dts/bcm2711-rpi-400.dts
+index f4d2fc20397c..bed192b085df 100644
+--- a/arch/arm/boot/dts/bcm2711-rpi-400.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-400.dts
+@@ -1,6 +1,9 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /dts-v1/;
+-#include "bcm2711-rpi-4-b.dts"
++#include "bcm2711.dtsi"
++#include "bcm2835-rpi.dtsi"
++
++#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
+ 
+ / {
+ 	compatible = "raspberrypi,400", "brcm,bcm2711";
+@@ -11,35 +14,624 @@ chosen {
+ 		stdout-path = "serial1:115200n8";
+ 	};
+ 
++	/* Will be filled by the bootloader */
++	memory@0 {
++		device_type = "memory";
++		reg = <0 0 0>;
++	};
++
++	aliases {
++		emmc2bus = &emmc2bus;
++		ethernet0 = &genet;
++		pcie0 = &pcie0;
++		blconfig = &blconfig;
++	};
++
+ 	leds {
+-		/delete-node/ led-act;
++		led-act {
++			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++		};
+ 
+ 		led-pwr {
+-			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++			label = "PWR";
++			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
++			default-state = "keep";
++			linux,default-trigger = "default-on";
++		};
++	};
++
++	wifi_pwrseq: wifi-pwrseq {
++		compatible = "mmc-pwrseq-simple";
++		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
++	};
++
++	sd_io_1v8_reg: sd_io_1v8_reg {
++		compatible = "regulator-gpio";
++		regulator-name = "vdd-sd-io";
++		regulator-min-microvolt = <1800000>;
++		regulator-max-microvolt = <3300000>;
++		regulator-boot-on;
++		regulator-always-on;
++		regulator-settling-time-us = <5000>;
++		gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
++		states = <1800000 0x1
++			  3300000 0x0>;
++		status = "okay";
++	};
++
++	sd_vcc_reg: sd_vcc_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "vcc-sd";
++		regulator-min-microvolt = <3300000>;
++		regulator-max-microvolt = <3300000>;
++		regulator-boot-on;
++		enable-active-high;
++		gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
++	};
++};
++
++&ddc0 {
++	status = "okay";
++};
++
++&ddc1 {
++	status = "okay";
++};
++
++&firmware {
++	firmware_clocks: clocks {
++		compatible = "raspberrypi,firmware-clocks";
++		#clock-cells = <1>;
++	};
++
++	expgpio: gpio {
++		compatible = "raspberrypi,firmware-gpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		gpio-line-names = "BT_ON",
++				  "WL_ON",
++				  "PWR_LED_OFF",
++				  "GLOBAL_RESET",
++				  "VDD_SD_IO_SEL",
++				  "CAM_GPIO",
++				  "SD_PWR_ON",
++				  "SD_OC_N";
++		status = "okay";
++	};
++
++	reset: reset {
++		compatible = "raspberrypi,firmware-reset";
++		#reset-cells = <1>;
++	};
++};
++
++&gpio {
++	/*
++	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "RGMII_MDIO",
++			  "RGMIO_MDC",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  /* Shared with SPI flash */
++			  "PWM0_MISO",
++			  "PWM1_MOSI",
++			  "STATUS_LED_G_CLK",
++			  "SPIFLASH_CE_N",
++			  "SDA0",
++			  "SCL0",
++			  "RGMII_RXCLK",
++			  "RGMII_RXCTL",
++			  "RGMII_RXD0",
++			  "RGMII_RXD1",
++			  "RGMII_RXD2",
++			  "RGMII_RXD3",
++			  "RGMII_TXCLK",
++			  "RGMII_TXCTL",
++			  "RGMII_TXD0",
++			  "RGMII_TXD1",
++			  "RGMII_TXD2",
++			  "RGMII_TXD3";
++};
++
++&hdmi0 {
++	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
++	clock-names = "hdmi", "bvb", "audio", "cec";
++	wifi-2.4ghz-coexistence;
++	status = "okay";
++};
++
++&hdmi1 {
++	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
++	clock-names = "hdmi", "bvb", "audio", "cec";
++	wifi-2.4ghz-coexistence;
++	status = "okay";
++};
++
++&hvs {
++	clocks = <&firmware_clocks 4>;
++};
++
++&pixelvalve0 {
++	status = "okay";
++};
++
++&pixelvalve1 {
++	status = "okay";
++};
++
++&pixelvalve2 {
++	status = "okay";
++};
++
++&pixelvalve4 {
++	status = "okay";
++};
++
++&pwm1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;
++	status = "okay";
++};
++
++&rmem {
++	/*
++	 * RPi4's co-processor will copy the board's bootloader configuration
++	 * into memory for the OS to consume. It'll also update this node with
++	 * its placement information.
++	 */
++	blconfig: nvram@0 {
++		compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
++		#address-cells = <1>;
++		#size-cells = <1>;
++		reg = <0x0 0x0 0x0>;
++		no-map;
++		status = "disabled";
++	};
++};
++
++/* SDHCI is used to control the SDIO for wireless */
++&sdhci {
++	#address-cells = <1>;
++	#size-cells = <0>;
++	pinctrl-names = "default";
++	pinctrl-0 = <&emmc_gpio34>;
++	bus-width = <4>;
++	non-removable;
++	mmc-pwrseq = <&wifi_pwrseq>;
++	status = "okay";
++
++	brcmf: wifi@1 {
++		reg = <1>;
++		compatible = "brcm,bcm4329-fmac";
++	};
++};
++
++/* EMMC2 is used to drive the SD card */
++&emmc2 {
++	vqmmc-supply = <&sd_io_1v8_reg>;
++	vmmc-supply = <&sd_vcc_reg>;
++	broken-cd;
++	status = "okay";
++};
++
++&genet {
++	phy-handle = <&phy1>;
++	phy-mode = "rgmii-rxid";
++	status = "okay";
++};
++
++&genet_mdio {
++	phy1: ethernet-phy@1 {
++		/* No PHY interrupt */
++		reg = <0x1>;
++	};
++};
++
++&pcie0 {
++	pci@0,0 {
++		device-type = "pci";
++		#address-cells = <3>;
++		#size-cells = <2>;
++		ranges;
++
++		reg = <0 0 0 0 0>;
++
++		usb@0,0 {
++			reg = <0x0 0 0 0 0>;
++			resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
+ 		};
+ 	};
++};
++
++/* uart0 communicates with the BT module */
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
++	uart-has-rtscts;
++	status = "okay";
++
++	bluetooth {
++		compatible = "brcm,bcm43438-bt";
++		max-speed = <2000000>;
++		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
++	};
++};
++
++/* uart1 is mapped to the pin header */
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_gpio14>;
++	status = "okay";
++};
++
++&vchiq {
++	interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&vc4 {
++	status = "okay";
++};
++
++&vec {
++	status = "disabled";
++};
++
++// =============================================
++// Downstream rpi- changes
++
++#define BCM2711
++
++#include "bcm270x.dtsi"
++#include "bcm271x-rpi-bt.dtsi"
++
++/ {
++	soc {
++		/delete-node/ pixelvalve@7e807000;
++		/delete-node/ hdmi@7e902000;
++	};
++};
+ 
+-	gpio-poweroff {
++#include "bcm2711-rpi-ds.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++
++/ {
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc0 = &emmc2;
++		mmc1 = &mmcnr;
++		mmc2 = &sdhost;
++		i2c3 = &i2c3;
++		i2c4 = &i2c4;
++		i2c5 = &i2c5;
++		i2c6 = &i2c6;
++		i2c20 = &ddc0;
++		i2c21 = &ddc1;
++		spi3 = &spi3;
++		spi4 = &spi4;
++		spi5 = &spi5;
++		spi6 = &spi6;
++		/delete-property/ intc;
++	};
++
++	/delete-node/ wifi-pwrseq;
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&uart0 {
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-0 = <&uart1_pins>;
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi3_pins: spi3_pins {
++		brcm,pins = <1 2 3>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi3_cs_pins: spi3_cs_pins {
++		brcm,pins = <0 24>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi4_pins: spi4_pins {
++		brcm,pins = <5 6 7>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi4_cs_pins: spi4_cs_pins {
++		brcm,pins = <4 25>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi5_pins: spi5_pins {
++		brcm,pins = <13 14 15>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi5_cs_pins: spi5_cs_pins {
++		brcm,pins = <12 26>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi6_pins: spi6_pins {
++		brcm,pins = <19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi6_cs_pins: spi6_cs_pins {
++		brcm,pins = <18 27>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c3_pins: i2c3 {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c4_pins: i2c4 {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c5_pins: i2c5 {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c6_pins: i2c6 {
++		brcm,pins = <22 23>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <BCM2835_FSEL_ALT3>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = "-"; // non-empty to keep btuart happy, //4 = 0
++				 // to fool pinctrl
++		brcm,function = <0>;
++		brcm,pull = <2>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <32 33>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++		brcm,pull = <0 2>;
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	uart2_pins: uart2_pins {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart3_pins: uart3_pins {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart4_pins: uart4_pins {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart5_pins: uart5_pins {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++// =============================================
++// Board specific stuff here
++
++/ {
++	power_ctrl: power_ctrl {
+ 		compatible = "gpio-poweroff";
+-		gpios = <&expgpio 5 GPIO_ACTIVE_HIGH>;
++		gpios = <&expgpio 5 0>;
++		force;
++	};
++};
++
++&sdhost {
++	status = "disabled";
++};
++
++&phy1 {
++	led-modes = <0x00 0x08>; /* link/activity link */
++};
++
++&gpio {
++	audio_pins: audio_pins {
++		brcm,pins = <>;
++		brcm,function = <>;
++	};
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "default-on";
++		default-state = "on";
++		gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "default-on";
++		gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+ 	};
+ };
+ 
+-&expgpio {
+-	gpio-line-names = "BT_ON",
+-			  "WL_ON",
+-			  "",
+-			  "GLOBAL_RESET",
+-			  "VDD_SD_IO_SEL",
+-			  "CAM_GPIO",
+-			  "SD_PWR_ON",
+-			  "SD_OC_N";
++&pwm1 {
++	status = "disabled";
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++	brcm,disable-headphones = <1>;
+ };
+ 
+ &genet_mdio {
+ 	clock-frequency = <1950000>;
+ };
+ 
+-&pm {
+-	/delete-property/ system-power-controller;
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++
++		eth_led0 = <&phy1>,"led-modes:0";
++		eth_led1 = <&phy1>,"led-modes:4";
++
++		sd_poll_once = <&emmc2>, "non-removable?";
++		spi_dma4 = <&spi0>, "dmas:0=", <&dma40>,
++			   <&spi0>, "dmas:8=", <&dma40>;
++	};
+ };
+diff --git a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+new file mode 100644
+index 000000000000..76dd97513a20
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+@@ -0,0 +1,660 @@
++// SPDX-License-Identifier: GPL-2.0
++/dts-v1/;
++#include "bcm2711.dtsi"
++#include "bcm2835-rpi.dtsi"
++
++#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
++
++/ {
++	compatible = "raspberrypi,4-compute-module", "brcm,bcm2711";
++	model = "Raspberry Pi Compute Module 4";
++
++	chosen {
++		/* 8250 auxiliary UART instead of pl011 */
++		stdout-path = "serial1:115200n8";
++	};
++
++	/* Will be filled by the bootloader */
++	memory@0 {
++		device_type = "memory";
++		reg = <0 0 0>;
++	};
++
++	aliases {
++		emmc2bus = &emmc2bus;
++		ethernet0 = &genet;
++		pcie0 = &pcie0;
++		blconfig = &blconfig;
++	};
++
++	leds {
++		led-act {
++			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++		};
++
++		led-pwr {
++			label = "PWR";
++			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
++			default-state = "keep";
++			linux,default-trigger = "default-on";
++		};
++	};
++
++	wifi_pwrseq: wifi-pwrseq {
++		compatible = "mmc-pwrseq-simple";
++		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
++	};
++
++	sd_io_1v8_reg: sd_io_1v8_reg {
++		compatible = "regulator-gpio";
++		regulator-name = "vdd-sd-io";
++		regulator-min-microvolt = <1800000>;
++		regulator-max-microvolt = <3300000>;
++		regulator-boot-on;
++		regulator-always-on;
++		regulator-settling-time-us = <5000>;
++		gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
++		states = <1800000 0x1
++			  3300000 0x0>;
++		status = "okay";
++	};
++
++	sd_vcc_reg: sd_vcc_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "vcc-sd";
++		regulator-min-microvolt = <3300000>;
++		regulator-max-microvolt = <3300000>;
++		regulator-boot-on;
++		enable-active-high;
++		gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
++	};
++};
++
++&ddc0 {
++	status = "okay";
++};
++
++&ddc1 {
++	status = "okay";
++};
++
++&firmware {
++	firmware_clocks: clocks {
++		compatible = "raspberrypi,firmware-clocks";
++		#clock-cells = <1>;
++	};
++
++	expgpio: gpio {
++		compatible = "raspberrypi,firmware-gpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		gpio-line-names = "BT_ON",
++				  "WL_ON",
++				  "PWR_LED_OFF",
++				  "ANT1",
++				  "VDD_SD_IO_SEL",
++				  "CAM_GPIO",
++				  "SD_PWR_ON",
++				  "ANT2";
++		status = "okay";
++
++		ant1: ant1 {
++			gpio-hog;
++			gpios = <3 GPIO_ACTIVE_HIGH>;
++			output-high;
++		};
++
++		ant2: ant2 {
++			gpio-hog;
++			gpios = <7 GPIO_ACTIVE_HIGH>;
++			output-low;
++		};
++	};
++
++	reset: reset {
++		compatible = "raspberrypi,firmware-reset";
++		#reset-cells = <1>;
++	};
++};
++
++&gpio {
++	/*
++	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "RGMII_MDIO",
++			  "RGMIO_MDC",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  /* Shared with SPI flash */
++			  "PWM0_MISO",
++			  "PWM1_MOSI",
++			  "STATUS_LED_G_CLK",
++			  "SPIFLASH_CE_N",
++			  "SDA0",
++			  "SCL0",
++			  "RGMII_RXCLK",
++			  "RGMII_RXCTL",
++			  "RGMII_RXD0",
++			  "RGMII_RXD1",
++			  "RGMII_RXD2",
++			  "RGMII_RXD3",
++			  "RGMII_TXCLK",
++			  "RGMII_TXCTL",
++			  "RGMII_TXD0",
++			  "RGMII_TXD1",
++			  "RGMII_TXD2",
++			  "RGMII_TXD3";
++};
++
++&hdmi0 {
++	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
++	clock-names = "hdmi", "bvb", "audio", "cec";
++	wifi-2.4ghz-coexistence;
++	status = "okay";
++};
++
++&hdmi1 {
++	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
++	clock-names = "hdmi", "bvb", "audio", "cec";
++	wifi-2.4ghz-coexistence;
++	status = "okay";
++};
++
++&hvs {
++	clocks = <&firmware_clocks 4>;
++};
++
++&pixelvalve0 {
++	status = "okay";
++};
++
++&pixelvalve1 {
++	status = "okay";
++};
++
++&pixelvalve2 {
++	status = "okay";
++};
++
++&pixelvalve4 {
++	status = "okay";
++};
++
++&pwm1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;
++	status = "okay";
++};
++
++&rmem {
++	/*
++	 * RPi4's co-processor will copy the board's bootloader configuration
++	 * into memory for the OS to consume. It'll also update this node with
++	 * its placement information.
++	 */
++	blconfig: nvram@0 {
++		compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
++		#address-cells = <1>;
++		#size-cells = <1>;
++		reg = <0x0 0x0 0x0>;
++		no-map;
++		status = "disabled";
++	};
++};
++
++/* SDHCI is used to control the SDIO for wireless */
++&sdhci {
++	#address-cells = <1>;
++	#size-cells = <0>;
++	pinctrl-names = "default";
++	pinctrl-0 = <&emmc_gpio34>;
++	bus-width = <4>;
++	non-removable;
++	mmc-pwrseq = <&wifi_pwrseq>;
++	status = "okay";
++
++	brcmf: wifi@1 {
++		reg = <1>;
++		compatible = "brcm,bcm4329-fmac";
++	};
++};
++
++/* EMMC2 is used to drive the EMMC card */
++&emmc2 {
++	bus-width = <8>;
++	vqmmc-supply = <&sd_io_1v8_reg>;
++	vmmc-supply = <&sd_vcc_reg>;
++	broken-cd;
++	status = "okay";
++};
++
++&genet {
++	phy-handle = <&phy1>;
++	phy-mode = "rgmii-rxid";
++	status = "okay";
++};
++
++&genet_mdio {
++	phy1: ethernet-phy@0 {
++		/* No PHY interrupt */
++		reg = <0x0>;
++	};
++};
++
++&pcie0 {
++	pci@0,0 {
++		device-type = "pci";
++		#address-cells = <3>;
++		#size-cells = <2>;
++		ranges;
++
++		reg = <0 0 0 0 0>;
++
++		usb@0,0 {
++			reg = <0 0 0 0 0>;
++			resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
++		};
++	};
++};
++
++/* uart0 communicates with the BT module */
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
++	uart-has-rtscts;
++	status = "okay";
++
++	bluetooth {
++		compatible = "brcm,bcm43438-bt";
++		max-speed = <2000000>;
++		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
++	};
++};
++
++/* uart1 is mapped to the pin header */
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_gpio14>;
++	status = "okay";
++};
++
++&vchiq {
++	interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&vc4 {
++	status = "okay";
++};
++
++&vec {
++	status = "disabled";
++};
++
++// =============================================
++// Downstream rpi- changes
++
++#define BCM2711
++
++#include "bcm270x.dtsi"
++#include "bcm271x-rpi-bt.dtsi"
++
++/ {
++	soc {
++		/delete-node/ pixelvalve@7e807000;
++		/delete-node/ hdmi@7e902000;
++	};
++};
++
++#include "bcm2711-rpi-ds.dtsi"
++#include "bcm283x-rpi-csi0-2lane.dtsi"
++#include "bcm283x-rpi-csi1-4lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc0 = &emmc2;
++		mmc1 = &mmcnr;
++		mmc2 = &sdhost;
++		i2c3 = &i2c3;
++		i2c4 = &i2c4;
++		i2c5 = &i2c5;
++		i2c6 = &i2c6;
++		i2c20 = &ddc0;
++		i2c21 = &ddc1;
++		spi3 = &spi3;
++		spi4 = &spi4;
++		spi5 = &spi5;
++		spi6 = &spi6;
++		/delete-property/ intc;
++	};
++
++	/delete-node/ wifi-pwrseq;
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&uart0 {
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-0 = <&uart1_pins>;
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi3_pins: spi3_pins {
++		brcm,pins = <1 2 3>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi3_cs_pins: spi3_cs_pins {
++		brcm,pins = <0 24>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi4_pins: spi4_pins {
++		brcm,pins = <5 6 7>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi4_cs_pins: spi4_cs_pins {
++		brcm,pins = <4 25>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi5_pins: spi5_pins {
++		brcm,pins = <13 14 15>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi5_cs_pins: spi5_cs_pins {
++		brcm,pins = <12 26>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi6_pins: spi6_pins {
++		brcm,pins = <19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi6_cs_pins: spi6_cs_pins {
++		brcm,pins = <18 27>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c3_pins: i2c3 {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c4_pins: i2c4 {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c5_pins: i2c5 {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c6_pins: i2c6 {
++		brcm,pins = <22 23>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <BCM2835_FSEL_ALT3>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = "-"; // non-empty to keep btuart happy, //4 = 0
++				 // to fool pinctrl
++		brcm,function = <0>;
++		brcm,pull = <2>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <32 33>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++		brcm,pull = <0 2>;
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	uart2_pins: uart2_pins {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart3_pins: uart3_pins {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart4_pins: uart4_pins {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart5_pins: uart5_pins {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++// =============================================
++// Board specific stuff here
++
++&pcie0 {
++       brcm,enable-l1ss;
++};
++
++&sdhost {
++	status = "disabled";
++};
++
++&phy1 {
++	led-modes = <0x00 0x08>; /* link/activity link */
++};
++
++&gpio {
++	audio_pins: audio_pins {
++		brcm,pins = <>;
++		brcm,function = <>;
++	};
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++		gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++	};
++
++	pwr_led: led-pwr {
++		label = "led1";
++		linux,default-trigger = "default-on";
++		gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&pwm1 {
++	status = "disabled";
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++	brcm,disable-headphones = <1>;
++};
++
++cam0_reg: &cam1_reg {
++	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		pwr_led_gpio = <&pwr_led>,"gpios:4";
++		pwr_led_activelow = <&pwr_led>,"gpios:8";
++		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
++
++		eth_led0 = <&phy1>,"led-modes:0";
++		eth_led1 = <&phy1>,"led-modes:4";
++
++		ant1 =  <&ant1>,"output-high?=on",
++			<&ant1>, "output-low?=off",
++			<&ant2>, "output-high?=off",
++			<&ant2>, "output-low?=on";
++		ant2 =  <&ant1>,"output-high?=off",
++			<&ant1>, "output-low?=on",
++			<&ant2>, "output-high?=on",
++			<&ant2>, "output-low?=off";
++		noant = <&ant1>,"output-high?=off",
++			<&ant1>, "output-low?=on",
++			<&ant2>, "output-high?=off",
++			<&ant2>, "output-low?=on";
++
++		sd_poll_once = <&emmc2>, "non-removable?";
++		spi_dma4 = <&spi0>, "dmas:0=", <&dma40>,
++			   <&spi0>, "dmas:8=", <&dma40>;
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi b/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
+new file mode 100644
+index 000000000000..ebf73b789b4a
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
+@@ -0,0 +1,205 @@
++// SPDX-License-Identifier: GPL-2.0
++#include "bcm270x-rpi.dtsi"
++
++/ {
++	__overrides__ {
++		arm_freq;
++	};
++
++	v3dbus: v3dbus {
++		compatible = "simple-bus";
++		#address-cells = <1>;
++		#size-cells = <2>;
++		ranges = <0x7c500000  0x0 0xfc500000  0x0 0x03300000>,
++			 <0x40000000  0x0 0xff800000  0x0 0x00800000>;
++		dma-ranges = <0x00000000  0x0 0x00000000  0x4 0x00000000>;
++
++		v3d: v3d@7ec04000 {
++			compatible = "brcm,2711-v3d";
++			reg =
++			    <0x7ec00000  0x0 0x4000>,
++			    <0x7ec04000  0x0 0x4000>;
++			reg-names = "hub", "core0";
++
++			power-domains = <&pm BCM2835_POWER_DOMAIN_GRAFX_V3D>;
++			resets = <&pm BCM2835_RESET_V3D>;
++			clocks = <&firmware_clocks 5>;
++			clocks-names = "v3d";
++			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
++			status = "disabled";
++		};
++	};
++
++	scb: scb {
++	     /* Add a label */
++	};
++};
++
++&vc4 {
++	raspberrypi,firmware = <&firmware>;
++};
++
++&cma {
++	/* Limit cma to the lower 768MB to allow room for HIGHMEM on 32-bit */
++	alloc-ranges = <0x0 0x00000000 0x30000000>;
++};
++
++&scb {
++	ranges = <0x0 0x7c000000  0x0 0xfc000000  0x0 0x03800000>,
++		 <0x0 0x40000000  0x0 0xff800000  0x0 0x00800000>,
++		 <0x6 0x00000000  0x6 0x00000000  0x0 0x40000000>,
++		 <0x0 0x00000000  0x0 0x00000000  0x0 0xfc000000>;
++	dma-ranges = <0x0 0x00000000  0x0 0x00000000  0x4 0x00000000>;
++
++	dma40: dma@7e007b00 {
++		compatible = "brcm,bcm2711-dma";
++		reg = <0x0 0x7e007b00  0x0 0x400>;
++		interrupts =
++			<GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>, /* dma4 11 */
++			<GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>, /* dma4 12 */
++			<GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>, /* dma4 13 */
++			<GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>; /* dma4 14 */
++		interrupt-names = "dma11",
++			"dma12",
++			"dma13",
++			"dma14";
++		#dma-cells = <1>;
++		brcm,dma-channel-mask = <0x7800>;
++	};
++
++	xhci: xhci@7e9c0000 {
++		compatible = "generic-xhci";
++		status = "disabled";
++		reg = <0x0 0x7e9c0000  0x0 0x100000>;
++		interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>;
++		power-domains = <&power RPI_POWER_DOMAIN_USB>;
++	};
++
++	hevc-decoder@7eb00000 {
++		compatible = "raspberrypi,rpivid-hevc-decoder";
++		reg = <0x0 0x7eb00000  0x0 0x10000>;
++		status = "okay";
++	};
++
++	rpivid-local-intc@7eb10000 {
++		compatible = "raspberrypi,rpivid-local-intc";
++		reg = <0x0 0x7eb10000  0x0 0x1000>;
++		status = "okay";
++		interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
++	};
++
++	h264-decoder@7eb20000 {
++		compatible = "raspberrypi,rpivid-h264-decoder";
++		reg = <0x0 0x7eb20000  0x0 0x10000>;
++		status = "okay";
++	};
++
++	vp9-decoder@7eb30000 {
++		compatible = "raspberrypi,rpivid-vp9-decoder";
++		reg = <0x0 0x7eb30000  0x0 0x10000>;
++		status = "okay";
++	};
++};
++
++&dma40 {
++	/* The VPU firmware uses DMA channel 11 for VCHIQ */
++	brcm,dma-channel-mask = <0x7000>;
++};
++
++&vchiq {
++	compatible = "brcm,bcm2711-vchiq";
++};
++
++&firmwarekms {
++	compatible = "raspberrypi,rpi-firmware-kms-2711";
++	interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&smi {
++	interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&mmc {
++	interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&mmcnr {
++	interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&csi0 {
++	interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&csi1 {
++	interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&random {
++	compatible = "brcm,bcm2711-rng200";
++	status = "okay";
++};
++
++&usb {
++	/* Enable the FIQ support */
++	reg = <0x7e980000 0x10000>,
++	      <0x7e00b200 0x200>;
++	interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
++		     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
++	status = "disabled";
++};
++
++&gpio {
++	interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
++		     <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&emmc2 {
++	mmc-ddr-3_3v;
++};
++
++&vc4 {
++	status = "disabled";
++};
++
++&pixelvalve0 {
++	status = "disabled";
++};
++
++&pixelvalve1 {
++	status = "disabled";
++};
++
++&pixelvalve2 {
++	status = "disabled";
++};
++
++&pixelvalve3 {
++	status = "disabled";
++};
++
++&pixelvalve4 {
++	status = "disabled";
++};
++
++&hdmi0 {
++	dmas = <&dma (10|(1<<27)|(1<<24)|(10<<16)|(15<<20))>;
++	status = "disabled";
++};
++
++&ddc0 {
++	status = "disabled";
++};
++
++&hdmi1 {
++	dmas = <&dma (17|(1<<27)|(1<<24)|(10<<16)|(15<<20))>;
++	status = "disabled";
++};
++
++&ddc1 {
++	status = "disabled";
++};
++
++&dvp {
++	status = "disabled";
++};
+diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
+index 89af57482bc8..131db82e079d 100644
+--- a/arch/arm/boot/dts/bcm2711.dtsi
++++ b/arch/arm/boot/dts/bcm2711.dtsi
+@@ -323,6 +323,7 @@ aon_intr: interrupt-controller@7ef00100 {
+ 			interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+ 			interrupt-controller;
+ 			#interrupt-cells = <1>;
++			status = "disabled";
+ 		};
+ 
+ 		hdmi0: hdmi@7ef00700 {
+@@ -335,7 +336,8 @@ hdmi0: hdmi@7ef00700 {
+ 			      <0x7ef01f00 0x400>,
+ 			      <0x7ef00200 0x80>,
+ 			      <0x7ef04300 0x100>,
+-			      <0x7ef20000 0x100>;
++			      <0x7ef20000 0x100>,
++			      <0x7ef00100 0x30>;
+ 			reg-names = "hdmi",
+ 				    "dvp",
+ 				    "phy",
+@@ -344,7 +346,12 @@ hdmi0: hdmi@7ef00700 {
+ 				    "metadata",
+ 				    "csc",
+ 				    "cec",
+-				    "hd";
++				    "hd",
++				    "intr2";
++			clocks = <&firmware_clocks 13>,
++				 <&firmware_clocks 14>,
++				 <&dvp 0>,
++				 <&clk_27MHz>;
+ 			clock-names = "hdmi", "bvb", "audio", "cec";
+ 			resets = <&dvp 0>;
+ 			interrupt-parent = <&aon_intr>;
+@@ -353,7 +360,7 @@ hdmi0: hdmi@7ef00700 {
+ 			interrupt-names = "cec-tx", "cec-rx", "cec-low",
+ 					  "wakeup", "hpd-connected", "hpd-removed";
+ 			ddc = <&ddc0>;
+-			dmas = <&dma 10>;
++			dmas = <&dma (10 | (1 << 27) | (1 << 24)| (15 << 20) | (10 << 16))>;
+ 			dma-names = "audio-rx";
+ 			status = "disabled";
+ 		};
+@@ -376,7 +383,8 @@ hdmi1: hdmi@7ef05700 {
+ 			      <0x7ef06f00 0x400>,
+ 			      <0x7ef00280 0x80>,
+ 			      <0x7ef09300 0x100>,
+-			      <0x7ef20000 0x100>;
++			      <0x7ef20000 0x100>,
++			      <0x7ef00100 0x30>;
+ 			reg-names = "hdmi",
+ 				    "dvp",
+ 				    "phy",
+@@ -385,16 +393,21 @@ hdmi1: hdmi@7ef05700 {
+ 				    "metadata",
+ 				    "csc",
+ 				    "cec",
+-				    "hd";
++				    "hd",
++				    "intr2";
+ 			ddc = <&ddc1>;
+ 			clock-names = "hdmi", "bvb", "audio", "cec";
++			clocks = <&firmware_clocks 13>,
++				 <&firmware_clocks 14>,
++				 <&dvp 0>,
++				 <&clk_27MHz>;
+ 			resets = <&dvp 1>;
+ 			interrupt-parent = <&aon_intr>;
+ 			interrupts = <8>, <7>, <6>,
+ 				     <9>, <10>, <11>;
+ 			interrupt-names = "cec-tx", "cec-rx", "cec-low",
+ 					  "wakeup", "hpd-connected", "hpd-removed";
+-			dmas = <&dma 17>;
++			dmas = <&dma (17 | (1 << 27) | (1 << 24)| (15 << 20) | (10 << 16))>;
+ 			dma-names = "audio-rx";
+ 			status = "disabled";
+ 		};
+@@ -545,14 +558,14 @@ l2: l2-cache0 {
+ 	scb {
+ 		compatible = "simple-bus";
+ 		#address-cells = <2>;
+-		#size-cells = <1>;
++		#size-cells = <2>;
+ 
+-		ranges = <0x0 0x7c000000  0x0 0xfc000000  0x03800000>,
+-			 <0x6 0x00000000  0x6 0x00000000  0x40000000>;
++		ranges = <0x0 0x7c000000  0x0 0xfc000000  0x0 0x03800000>,
++			 <0x6 0x00000000  0x6 0x00000000  0x0 0x40000000>;
+ 
+ 		pcie0: pcie@7d500000 {
+ 			compatible = "brcm,bcm2711-pcie";
+-			reg = <0x0 0x7d500000 0x9310>;
++			reg = <0x0 0x7d500000  0x0 0x9310>;
+ 			device_type = "pci";
+ 			#address-cells = <3>;
+ 			#interrupt-cells = <1>;
+@@ -572,8 +585,8 @@ IRQ_TYPE_LEVEL_HIGH>,
+ 			msi-controller;
+ 			msi-parent = <&pcie0>;
+ 
+-			ranges = <0x02000000 0x0 0xf8000000 0x6 0x00000000
+-				  0x0 0x04000000>;
++			ranges = <0x02000000 0x0 0xc0000000 0x6 0x00000000
++				  0x0 0x40000000>;
+ 			/*
+ 			 * The wrapper around the PCIe block has a bug
+ 			 * preventing it from accessing beyond the first 3GB of
+@@ -586,7 +599,7 @@ IRQ_TYPE_LEVEL_HIGH>,
+ 
+ 		genet: ethernet@7d580000 {
+ 			compatible = "brcm,bcm2711-genet-v5";
+-			reg = <0x0 0x7d580000 0x10000>;
++			reg = <0x0 0x7d580000  0x0 0x10000>;
+ 			#address-cells = <0x1>;
+ 			#size-cells = <0x1>;
+ 			interrupts = <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
+@@ -1096,7 +1109,7 @@ &cma {
+ 	alloc-ranges = <0x0 0x00000000 0x40000000>;
+ };
+ 
+-&i2c0 {
++&i2c0if {
+ 	compatible = "brcm,bcm2711-i2c", "brcm,bcm2835-i2c";
+ 	interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
+ };
+@@ -1152,8 +1165,3 @@ &uart1 {
+ &usb {
+ 	interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+ };
+-
+-&vec {
+-	compatible = "brcm,bcm2711-vec";
+-	interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+-};
+diff --git a/arch/arm/boot/dts/bcm271x-rpi-bt.dtsi b/arch/arm/boot/dts/bcm271x-rpi-bt.dtsi
+new file mode 100644
+index 000000000000..6b9b79f74cf3
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm271x-rpi-bt.dtsi
+@@ -0,0 +1,26 @@
++// SPDX-License-Identifier: GPL-2.0
++
++&uart0 {
++	bt: bluetooth {
++		compatible = "brcm,bcm43438-bt";
++		max-speed = <3000000>;
++		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
++		status = "disabled";
++	};
++};
++
++&uart1 {
++	minibt: bluetooth {
++		compatible = "brcm,bcm43438-bt";
++		max-speed = <460800>;
++		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
++		status = "disabled";
++	};
++};
++
++/ {
++	__overrides__ {
++		krnbt = <&bt>,"status";
++		krnbt_baudrate = <&bt>,"max-speed:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm2835-common.dtsi b/arch/arm/boot/dts/bcm2835-common.dtsi
+index c25e797b9060..06d8c3882cb7 100644
+--- a/arch/arm/boot/dts/bcm2835-common.dtsi
++++ b/arch/arm/boot/dts/bcm2835-common.dtsi
+@@ -124,12 +124,14 @@ hdmi: hdmi@7e902000 {
+ 			compatible = "brcm,bcm2835-hdmi";
+ 			reg = <0x7e902000 0x600>,
+ 			      <0x7e808000 0x100>;
++			reg-names = "hdmi",
++				    "hd";
+ 			interrupts = <2 8>, <2 9>;
+ 			ddc = <&i2c2>;
+ 			clocks = <&clocks BCM2835_PLLH_PIX>,
+ 				 <&clocks BCM2835_CLOCK_HSM>;
+ 			clock-names = "pixel", "hdmi";
+-			dmas = <&dma 17>;
++			dmas = <&dma (17|(1<<27)|(1<<24))>;
+ 			dma-names = "audio-rx";
+ 			status = "disabled";
+ 		};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+index 40b9405f1a8e..d2384d8e8555 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+@@ -126,3 +126,8 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c on camera/display connector is gpio 28&29 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-a.dts b/arch/arm/boot/dts/bcm2835-rpi-a.dts
+index 11edb581dbaf..4ceca674b752 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-a.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-a.dts
+@@ -121,3 +121,10 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c0 on camera/display connector is gpio 0&1. Not exposed on header.
++ * To avoid having to remap everything, map both ports to gpios 0&1
++ */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio0>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+index 1b435c64bd9c..8f2d10d82fa1 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+@@ -128,3 +128,8 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c on camera/display connector is gpio 28&29 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
+index a23c25c00eea..547c88a3ae9f 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
+@@ -121,3 +121,10 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c0 on camera/display connector is gpio 0&1. Not exposed on header.
++ * To avoid having to remap everything, map both ports to gpios 0&1
++ */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio0>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts
+index 1b63d6b19750..073fc99ef8a2 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
+@@ -116,3 +116,10 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* camera/display connector use BSC1 on GPIOS 2&3.
++ * To avoid having to remap everything, map both ports to gpios 0&1
++ */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio0>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts
+index a75c882e6575..95564c93a645 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts
+@@ -95,3 +95,8 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* WHAT TO DO HERE? */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+index 33b2b77aa47d..3ea5c7e6be54 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+@@ -149,3 +149,8 @@ &uart1 {
+ 	pinctrl-0 = <&uart1_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c on camera/display connector is gpio 28&29 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
+index 6f9b3a908f28..a0eabab12c99 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-zero.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
+@@ -117,3 +117,8 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c on camera/display connector is gpio 28&29 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+index 87ddcad76083..edc55bba5ff4 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+@@ -19,6 +19,11 @@ firmware: firmware {
+ 
+ 			mboxes = <&mailbox>;
+ 			dma-ranges;
++
++			firmware_clocks: clocks {
++				compatible = "raspberrypi,firmware-clocks";
++				#clock-cells = <1>;
++			};
+ 		};
+ 
+ 		power: power {
+@@ -49,13 +54,17 @@ alt0: alt0 {
+ 	};
+ };
+ 
+-&i2c0 {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&i2c0_gpio0>;
++&i2c0if {
+ 	status = "okay";
+ 	clock-frequency = <100000>;
+ };
+ 
++&i2c0mux {
++	pinctrl-0 = <&i2c0_gpio0>;
++	/* pinctrl-1 varies based on platform */
++	status = "okay";
++};
++
+ &i2c1 {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&i2c1_gpio2>;
+@@ -67,6 +76,10 @@ &usb {
+ 	power-domains = <&power RPI_POWER_DOMAIN_USB>;
+ };
+ 
++&vc4 {
++	raspberrypi,firmware = <&firmware>;
++};
++
+ &vec {
+ 	power-domains = <&power RPI_POWER_DOMAIN_VEC>;
+ 	status = "okay";
+diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
+index 0549686134ea..2ea891228ea0 100644
+--- a/arch/arm/boot/dts/bcm2835.dtsi
++++ b/arch/arm/boot/dts/bcm2835.dtsi
+@@ -19,7 +19,7 @@ cpu@0 {
+ 
+ 	soc {
+ 		ranges = <0x7e000000 0x20000000 0x02000000>;
+-		dma-ranges = <0x40000000 0x00000000 0x20000000>;
++		dma-ranges = <0x80000000 0x00000000 0x20000000>;
+ 	};
+ 
+ 	arm-pmu {
+diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+index d8af8eeac7b6..bf22b74359d8 100644
+--- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+@@ -128,3 +128,8 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c on camera/display connector is gpio 28&29 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+index 77099a7871b0..9529c0475673 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+@@ -178,3 +178,8 @@ &uart1 {
+ 	pinctrl-0 = <&uart1_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c on camera/display connector is gpio 44&45 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio44>;
++};
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+index 61010266ca9a..40cb269aed0f 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+@@ -181,3 +181,8 @@ &uart1 {
+ 	pinctrl-0 = <&uart1_gpio14>;
+ 	status = "okay";
+ };
++
++/* i2c on camera/display connector is gpio 44&45 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio44>;
++};
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+index dd4a48604097..8f16b6b3fe08 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+@@ -174,3 +174,8 @@ &sdhost {
+ 	status = "okay";
+ 	bus-width = <4>;
+ };
++
++/* i2c on camera/display connector is gpio 44&45 */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio44>;
++};
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts b/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
+index 588d9411ceb6..dde209ade51b 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
+@@ -94,3 +94,8 @@ &uart0 {
+ 	pinctrl-0 = <&uart0_gpio14>;
+ 	status = "okay";
+ };
++
++/* WHAT TO DO HERE? */
++&i2c0mux {
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm283x-rpi-cam1-regulator.dtsi b/arch/arm/boot/dts/bcm283x-rpi-cam1-regulator.dtsi
+new file mode 100644
+index 000000000000..55237d03ed94
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm283x-rpi-cam1-regulator.dtsi
+@@ -0,0 +1,10 @@
++// SPDX-License-Identifier: GPL-2.0
++
++/ {
++	cam1_reg: cam1_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam1-reg";
++		enable-active-high;
++		status = "disabled";
++	};
++};
+diff --git a/arch/arm/boot/dts/bcm283x-rpi-csi0-2lane.dtsi b/arch/arm/boot/dts/bcm283x-rpi-csi0-2lane.dtsi
+new file mode 100644
+index 000000000000..6e4ce8622b47
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm283x-rpi-csi0-2lane.dtsi
+@@ -0,0 +1,4 @@
++// SPDX-License-Identifier: GPL-2.0-only
++&csi0 {
++	brcm,num-data-lanes = <2>;
++};
+diff --git a/arch/arm/boot/dts/bcm283x-rpi-csi1-2lane.dtsi b/arch/arm/boot/dts/bcm283x-rpi-csi1-2lane.dtsi
+new file mode 100644
+index 000000000000..6938f4daacdc
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm283x-rpi-csi1-2lane.dtsi
+@@ -0,0 +1,4 @@
++// SPDX-License-Identifier: GPL-2.0-only
++&csi1 {
++	brcm,num-data-lanes = <2>;
++};
+diff --git a/arch/arm/boot/dts/bcm283x-rpi-csi1-4lane.dtsi b/arch/arm/boot/dts/bcm283x-rpi-csi1-4lane.dtsi
+new file mode 100644
+index 000000000000..b37037437bee
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm283x-rpi-csi1-4lane.dtsi
+@@ -0,0 +1,4 @@
++// SPDX-License-Identifier: GPL-2.0-only
++&csi1 {
++	brcm,num-data-lanes = <4>;
++};
+diff --git a/arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_28.dtsi b/arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_28.dtsi
+new file mode 100644
+index 000000000000..38f0074bce3f
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_28.dtsi
+@@ -0,0 +1,4 @@
++&i2c0mux {
++	pinctrl-0 = <&i2c0_gpio0>;
++	pinctrl-1 = <&i2c0_gpio28>;
++};
+diff --git a/arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_44.dtsi b/arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_44.dtsi
+new file mode 100644
+index 000000000000..119946d878db
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm283x-rpi-i2c0mux_0_44.dtsi
+@@ -0,0 +1,4 @@
++&i2c0mux {
++	pinctrl-0 = <&i2c0_gpio0>;
++	pinctrl-1 = <&i2c0_gpio44>;
++};
+diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi
+index c113661a6668..62d7ee513549 100644
+--- a/arch/arm/boot/dts/bcm283x.dtsi
++++ b/arch/arm/boot/dts/bcm283x.dtsi
+@@ -336,7 +336,7 @@ spi: spi@7e204000 {
+ 			status = "disabled";
+ 		};
+ 
+-		i2c0: i2c@7e205000 {
++		i2c0if: i2c@7e205000 {
+ 			compatible = "brcm,bcm2835-i2c";
+ 			reg = <0x7e205000 0x200>;
+ 			interrupts = <2 21>;
+@@ -346,6 +346,30 @@ i2c0: i2c@7e205000 {
+ 			status = "disabled";
+ 		};
+ 
++		i2c0mux: i2c0mux {
++			compatible = "i2c-mux-pinctrl";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			i2c-parent = <&i2c0if>;
++
++			pinctrl-names = "i2c0", "i2c_csi_dsi";
++
++			status = "disabled";
++
++			i2c0: i2c@0 {
++				reg = <0>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++			};
++
++			i2c_csi_dsi: i2c@1 {
++				reg = <1>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++			};
++		};
++
+ 		dpi: dpi@7e208000 {
+ 			compatible = "brcm,bcm2835-dpi";
+ 			reg = <0x7e208000 0x8c>;
+diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
+new file mode 100644
+index 000000000000..44aedc149ff0
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -0,0 +1,248 @@
++# Overlays for the Raspberry Pi platform
++
++dtb-$(CONFIG_ARCH_BCM2835) += overlay_map.dtb
++
++dtbo-$(CONFIG_ARCH_BCM2835) += \
++	act-led.dtbo \
++	adafruit18.dtbo \
++	adau1977-adc.dtbo \
++	adau7002-simple.dtbo \
++	ads1015.dtbo \
++	ads1115.dtbo \
++	ads7846.dtbo \
++	adv7282m.dtbo \
++	adv728x-m.dtbo \
++	akkordion-iqdacplus.dtbo \
++	allo-boss-dac-pcm512x-audio.dtbo \
++	allo-boss2-dac-audio.dtbo \
++	allo-digione.dtbo \
++	allo-katana-dac-audio.dtbo \
++	allo-piano-dac-pcm512x-audio.dtbo \
++	allo-piano-dac-plus-pcm512x-audio.dtbo \
++	anyspi.dtbo \
++	apds9960.dtbo \
++	applepi-dac.dtbo \
++	at86rf233.dtbo \
++	audioinjector-addons.dtbo \
++	audioinjector-isolated-soundcard.dtbo \
++	audioinjector-ultra.dtbo \
++	audioinjector-wm8731-audio.dtbo \
++	audiosense-pi.dtbo \
++	audremap.dtbo \
++	balena-fin.dtbo \
++	cap1106.dtbo \
++	chipdip-dac.dtbo \
++	cma.dtbo \
++	dht11.dtbo \
++	dionaudio-loco.dtbo \
++	dionaudio-loco-v2.dtbo \
++	disable-bt.dtbo \
++	disable-wifi.dtbo \
++	dpi18.dtbo \
++	dpi18cpadhi.dtbo \
++	dpi24.dtbo \
++	draws.dtbo \
++	dwc-otg.dtbo \
++	dwc2.dtbo \
++	edt-ft5406.dtbo \
++	enc28j60.dtbo \
++	enc28j60-spi2.dtbo \
++	exc3000.dtbo \
++	fe-pi-audio.dtbo \
++	fsm-demo.dtbo \
++	ghost-amp.dtbo \
++	goodix.dtbo \
++	googlevoicehat-soundcard.dtbo \
++	gpio-fan.dtbo \
++	gpio-ir.dtbo \
++	gpio-ir-tx.dtbo \
++	gpio-key.dtbo \
++	gpio-led.dtbo \
++	gpio-no-bank0-irq.dtbo \
++	gpio-no-irq.dtbo \
++	gpio-poweroff.dtbo \
++	gpio-shutdown.dtbo \
++	hd44780-lcd.dtbo \
++	hdmi-backlight-hwhack-gpio.dtbo \
++	hifiberry-amp.dtbo \
++	hifiberry-amp100.dtbo \
++	hifiberry-dac.dtbo \
++	hifiberry-dacplus.dtbo \
++	hifiberry-dacplusadc.dtbo \
++	hifiberry-dacplusadcpro.dtbo \
++	hifiberry-dacplusdsp.dtbo \
++	hifiberry-dacplushd.dtbo \
++	hifiberry-digi.dtbo \
++	hifiberry-digi-pro.dtbo \
++	highperi.dtbo \
++	hy28a.dtbo \
++	hy28b.dtbo \
++	hy28b-2017.dtbo \
++	i-sabre-q2m.dtbo \
++	i2c-bcm2708.dtbo \
++	i2c-gpio.dtbo \
++	i2c-mux.dtbo \
++	i2c-pwm-pca9685a.dtbo \
++	i2c-rtc.dtbo \
++	i2c-rtc-gpio.dtbo \
++	i2c-sensor.dtbo \
++	i2c0.dtbo \
++	i2c1.dtbo \
++	i2c3.dtbo \
++	i2c4.dtbo \
++	i2c5.dtbo \
++	i2c6.dtbo \
++	i2s-gpio28-31.dtbo \
++	ilitek251x.dtbo \
++	imx219.dtbo \
++	imx290.dtbo \
++	imx378.dtbo \
++	imx477.dtbo \
++	iqaudio-codec.dtbo \
++	iqaudio-dac.dtbo \
++	iqaudio-dacplus.dtbo \
++	iqaudio-digi-wm8804-audio.dtbo \
++	irs1125.dtbo \
++	jedec-spi-nor.dtbo \
++	justboom-both.dtbo \
++	justboom-dac.dtbo \
++	justboom-digi.dtbo \
++	ltc294x.dtbo \
++	max98357a.dtbo \
++	maxtherm.dtbo \
++	mbed-dac.dtbo \
++	mcp23017.dtbo \
++	mcp23s17.dtbo \
++	mcp2515-can0.dtbo \
++	mcp2515-can1.dtbo \
++	mcp251xfd.dtbo \
++	mcp3008.dtbo \
++	mcp3202.dtbo \
++	mcp342x.dtbo \
++	media-center.dtbo \
++	merus-amp.dtbo \
++	midi-uart0.dtbo \
++	midi-uart1.dtbo \
++	midi-uart2.dtbo \
++	midi-uart3.dtbo \
++	midi-uart4.dtbo \
++	midi-uart5.dtbo \
++	minipitft13.dtbo \
++	miniuart-bt.dtbo \
++	mmc.dtbo \
++	mpu6050.dtbo \
++	mz61581.dtbo \
++	ov5647.dtbo \
++	ov7251.dtbo \
++	ov9281.dtbo \
++	papirus.dtbo \
++	pca953x.dtbo \
++	pcie-32bit-dma.dtbo \
++	pibell.dtbo \
++	pifacedigital.dtbo \
++	pifi-40.dtbo \
++	pifi-dac-hd.dtbo \
++	pifi-dac-zero.dtbo \
++	pifi-mini-210.dtbo \
++	piglow.dtbo \
++	piscreen.dtbo \
++	piscreen2r.dtbo \
++	pisound.dtbo \
++	pitft22.dtbo \
++	pitft28-capacitive.dtbo \
++	pitft28-resistive.dtbo \
++	pitft35-resistive.dtbo \
++	pps-gpio.dtbo \
++	pwm.dtbo \
++	pwm-2chan.dtbo \
++	pwm-ir-tx.dtbo \
++	qca7000.dtbo \
++	qca7000-uart0.dtbo \
++	rotary-encoder.dtbo \
++	rpi-backlight.dtbo \
++	rpi-cirrus-wm5102.dtbo \
++	rpi-dac.dtbo \
++	rpi-display.dtbo \
++	rpi-ft5406.dtbo \
++	rpi-poe.dtbo \
++	rpi-poe-plus.dtbo \
++	rpi-proto.dtbo \
++	rpi-sense.dtbo \
++	rpi-tv.dtbo \
++	rpivid-v4l2.dtbo \
++	rra-digidac1-wm8741-audio.dtbo \
++	sainsmart18.dtbo \
++	sc16is750-i2c.dtbo \
++	sc16is752-i2c.dtbo \
++	sc16is752-spi0.dtbo \
++	sc16is752-spi1.dtbo \
++	sdhost.dtbo \
++	sdio.dtbo \
++	seeed-can-fd-hat-v1.dtbo \
++	seeed-can-fd-hat-v2.dtbo \
++	sh1106-spi.dtbo \
++	si446x-spi0.dtbo \
++	smi.dtbo \
++	smi-dev.dtbo \
++	smi-nand.dtbo \
++	spi-gpio35-39.dtbo \
++	spi-gpio40-45.dtbo \
++	spi-rtc.dtbo \
++	spi0-1cs.dtbo \
++	spi0-2cs.dtbo \
++	spi1-1cs.dtbo \
++	spi1-2cs.dtbo \
++	spi1-3cs.dtbo \
++	spi2-1cs.dtbo \
++	spi2-2cs.dtbo \
++	spi2-3cs.dtbo \
++	spi3-1cs.dtbo \
++	spi3-2cs.dtbo \
++	spi4-1cs.dtbo \
++	spi4-2cs.dtbo \
++	spi5-1cs.dtbo \
++	spi5-2cs.dtbo \
++	spi6-1cs.dtbo \
++	spi6-2cs.dtbo \
++	ssd1306.dtbo \
++	ssd1306-spi.dtbo \
++	ssd1331-spi.dtbo \
++	ssd1351-spi.dtbo \
++	superaudioboard.dtbo \
++	sx150x.dtbo \
++	tc358743.dtbo \
++	tc358743-audio.dtbo \
++	tinylcd35.dtbo \
++	tpm-slb9670.dtbo \
++	uart0.dtbo \
++	uart1.dtbo \
++	uart2.dtbo \
++	uart3.dtbo \
++	uart4.dtbo \
++	uart5.dtbo \
++	udrc.dtbo \
++	ugreen-dabboard.dtbo \
++	upstream.dtbo \
++	upstream-pi4.dtbo \
++	vc4-fkms-v3d.dtbo \
++	vc4-fkms-v3d-pi4.dtbo \
++	vc4-kms-dpi-at056tn53v1.dtbo \
++	vc4-kms-dsi-7inch.dtbo \
++	vc4-kms-dsi-lt070me05000.dtbo \
++	vc4-kms-dsi-lt070me05000-v2.dtbo \
++	vc4-kms-kippah-7inch.dtbo \
++	vc4-kms-v3d.dtbo \
++	vc4-kms-v3d-pi4.dtbo \
++	vc4-kms-vga666.dtbo \
++	vga666.dtbo \
++	w1-gpio.dtbo \
++	w1-gpio-pullup.dtbo \
++	w5500.dtbo \
++	wittypi.dtbo \
++	wm8960-soundcard.dtbo
++
++targets += dtbs dtbs_install
++targets += $(dtbo-y)
++
++always-y	:= $(dtbo-y)
++clean-files	:= *.dtbo
+diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
+new file mode 100644
+index 000000000000..eb2c9adfb1a8
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/README
+@@ -0,0 +1,3530 @@
++Introduction
++============
++
++This directory contains Device Tree overlays. Device Tree makes it possible
++to support many hardware configurations with a single kernel and without the
++need to explicitly load or blacklist kernel modules. Note that this isn't a
++"pure" Device Tree configuration (c.f. MACH_BCM2835) - some on-board devices
++are still configured by the board support code, but the intention is to
++eventually reach that goal.
++
++On Raspberry Pi, Device Tree usage is controlled from /boot/config.txt. By
++default, the Raspberry Pi kernel boots with device tree enabled. You can
++completely disable DT usage (for now) by adding:
++
++    device_tree=
++
++to your config.txt, which should cause your Pi to revert to the old way of
++doing things after a reboot.
++
++In /boot you will find a .dtb for each base platform. This describes the
++hardware that is part of the Raspberry Pi board. The loader (start.elf and its
++siblings) selects the .dtb file appropriate for the platform by name, and reads
++it into memory. At this point, all of the optional interfaces (i2c, i2s, spi)
++are disabled, but they can be enabled using Device Tree parameters:
++
++    dtparam=i2c=on,i2s=on,spi=on
++
++However, this shouldn't be necessary in many use cases because loading an
++overlay that requires one of those interfaces will cause it to be enabled
++automatically, and it is advisable to only enable interfaces if they are
++needed.
++
++Configuring additional, optional hardware is done using Device Tree overlays
++(see below).
++
++GPIO numbering uses the hardware pin numbering scheme (aka BCM scheme) and
++not the physical pin numbers.
++
++raspi-config
++============
++
++The Advanced Options section of the raspi-config utility can enable and disable
++Device Tree use, as well as toggling the I2C and SPI interfaces. Note that it
++is possible to both enable an interface and blacklist the driver, if for some
++reason you should want to defer the loading.
++
++Modules
++=======
++
++As well as describing the hardware, Device Tree also gives enough information
++to allow suitable driver modules to be located and loaded, with the corollary
++that unneeded modules are not loaded. As a result it should be possible to
++remove lines from /etc/modules, and /etc/modprobe.d/raspi-blacklist.conf can
++have its contents deleted (or commented out).
++
++Using Overlays
++==============
++
++Overlays are loaded using the "dtoverlay" config.txt setting. As an example,
++consider I2C Real Time Clock drivers. In the pre-DT world these would be loaded
++by writing a magic string comprising a device identifier and an I2C address to
++a special file in /sys/class/i2c-adapter, having first loaded the driver for
++the I2C interface and the RTC device - something like this:
++
++    modprobe i2c-bcm2835
++    modprobe rtc-ds1307
++    echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device
++
++With DT enabled, this becomes a line in config.txt:
++
++    dtoverlay=i2c-rtc,ds1307
++
++This causes the file /boot/overlays/i2c-rtc.dtbo to be loaded and a "node"
++describing the DS1307 I2C device to be added to the Device Tree for the Pi. By
++default it usees address 0x68, but this can be modified with an additional DT
++parameter:
++
++    dtoverlay=i2c-rtc,ds1307,addr=0x68
++
++Parameters usually have default values, although certain parameters are
++mandatory. See the list of overlays below for a description of the parameters
++and their defaults.
++
++Making new Overlays based on existing Overlays
++==============================================
++
++Recent overlays have been designed in a more general way, so that they can be
++adapted to hardware by changing their parameters. When you have additional
++hardware with more than one device of a kind, you end up using the same overlay
++multiple times with other parameters, e.g.
++
++    # 2 CAN FD interfaces on spi but with different pins
++    dtoverlay=mcp251xfd,spi0-0,interrupt=25
++    dtoverlay=mcp251xfd,spi0-1,interrupt=24
++
++    # a realtime clock on i2c
++    dtoverlay=i2c-rtc,pcf85063
++
++While this approach does work, it requires knowledge about the hardware design.
++It is more feasible to simplify things for the end user by providing a single
++overlay as it is done the traditional way.
++
++A new overlay can be generated by using ovmerge utility.
++https://github.com/raspberrypi/utils/blob/master/ovmerge/ovmerge
++
++To generate an overlay for the above configuration we pass the configuration
++to ovmerge and add the -c flag.
++
++    ovmerge -c mcp251xfd-overlay.dts,spi0-0,interrupt=25 \
++               mcp251xfd-overlay.dts,spi0-1,interrupt=24 \
++               i2c-rtc-overlay.dts,pcf85063 \
++    >> merged-overlay.dts
++
++The -c option writes the command above as a comment into the overlay as
++a marker that this overlay is generated and how it was generated.
++After compiling the overlay it can be loaded in a single line.
++
++    dtoverlay=merged
++
++It does the same as the original configuration but without parameters.
++
++The Overlay and Parameter Reference
++===================================
++
++N.B. When editing this file, please preserve the indentation levels to make it
++simple to parse programmatically. NO HARD TABS.
++
++
++Name:   <The base DTB>
++Info:   Configures the base Raspberry Pi hardware
++Load:   <loaded automatically>
++Params:
++        ant1                    Select antenna 1 (default). CM4 only.
++
++        ant2                    Select antenna 2. CM4 only.
++
++        noant                   Disable both antennas. CM4 only.
++
++        audio                   Set to "on" to enable the onboard ALSA audio
++                                interface (default "off")
++
++        axiperf                 Set to "on" to enable the AXI bus performance
++                                monitors.
++                                See /sys/kernel/debug/raspberrypi_axi_monitor
++                                for the results.
++
++        eee                     Enable Energy Efficient Ethernet support for
++                                compatible devices (default "on"). See also
++                                "tx_lpi_timer". Pi3B+ only.
++
++        eth_downshift_after     Set the number of auto-negotiation failures
++                                after which the 1000Mbps modes are disabled.
++                                Legal values are 2, 3, 4, 5 and 0, where
++                                0 means never downshift (default 2). Pi3B+ only.
++
++        eth_led0                Set mode of LED0 - amber on Pi3B+ (default "1"),
++                                green on Pi4 (default "0").
++                                The legal values are:
++
++                                Pi3B+
++
++                                0=link/activity          1=link1000/activity
++                                2=link100/activity       3=link10/activity
++                                4=link100/1000/activity  5=link10/1000/activity
++                                6=link10/100/activity    14=off    15=on
++
++                                Pi4
++
++                                0=Speed/Activity         1=Speed
++                                2=Flash activity         3=FDX
++                                4=Off                    5=On
++                                6=Alt                    7=Speed/Flash
++                                8=Link                   9=Activity
++
++        eth_led1                Set mode of LED1 - green on Pi3B+ (default "6"),
++                                amber on Pi4 (default "8"). See eth_led0 for
++                                legal values.
++
++        eth_max_speed           Set the maximum speed a link is allowed
++                                to negotiate. Legal values are 10, 100 and
++                                1000 (default 1000). Pi3B+ only.
++
++        i2c_arm                 Set to "on" to enable the ARM's i2c interface
++                                (default "off")
++
++        i2c_vc                  Set to "on" to enable the i2c interface
++                                usually reserved for the VideoCore processor
++                                (default "off")
++
++        i2c                     An alias for i2c_arm
++
++        i2c_arm_baudrate        Set the baudrate of the ARM's i2c interface
++                                (default "100000")
++
++        i2c_vc_baudrate         Set the baudrate of the VideoCore i2c interface
++                                (default "100000")
++
++        i2c_baudrate            An alias for i2c_arm_baudrate
++
++        i2s                     Set to "on" to enable the i2s interface
++                                (default "off")
++
++        krnbt                   Set to "on" to enable autoprobing of Bluetooth
++                                driver without need of hciattach/btattach
++                                (default "off")
++
++        krnbt_baudrate          Set the baudrate of the PL011 UART when used
++                                with krnbt=on
++
++        spi                     Set to "on" to enable the spi interfaces
++                                (default "off")
++
++        spi_dma4                Use to enable 40-bit DMA on spi interfaces
++                                (the assigned value doesn't matter)
++                                (2711 only)
++
++        random                  Set to "on" to enable the hardware random
++                                number generator (default "on")
++
++        sd_overclock            Clock (in MHz) to use when the MMC framework
++                                requests 50MHz
++
++        sd_poll_once            Looks for a card once after booting. Useful
++                                for network booting scenarios to avoid the
++                                overhead of continuous polling. N.B. Using
++                                this option restricts the system to using a
++                                single card per boot (or none at all).
++                                (default off)
++
++        sd_force_pio            Disable DMA support for SD driver (default off)
++
++        sd_pio_limit            Number of blocks above which to use DMA for
++                                SD card (default 1)
++
++        sd_debug                Enable debug output from SD driver (default off)
++
++        sdio_overclock          Clock (in MHz) to use when the MMC framework
++                                requests 50MHz for the SDIO/WLAN interface.
++
++        tx_lpi_timer            Set the delay in microseconds between going idle
++                                and entering the low power state (default 600).
++                                Requires EEE to be enabled - see "eee".
++
++        uart0                   Set to "off" to disable uart0 (default "on")
++
++        uart1                   Set to "on" or "off" to enable or disable uart1
++                                (default varies)
++
++        watchdog                Set to "on" to enable the hardware watchdog
++                                (default "off")
++
++        act_led_trigger         Choose which activity the LED tracks.
++                                Use "heartbeat" for a nice load indicator.
++                                (default "mmc")
++
++        act_led_activelow       Set to "on" to invert the sense of the LED
++                                (default "off")
++                                N.B. For Pi 3B, 3B+, 3A+ and 4B, use the act-led
++                                overlay.
++
++        act_led_gpio            Set which GPIO to use for the activity LED
++                                (in case you want to connect it to an external
++                                device)
++                                (default "16" on a non-Plus board, "47" on a
++                                Plus or Pi 2)
++                                N.B. For Pi 3B, 3B+, 3A+ and 4B, use the act-led
++                                overlay.
++
++        pwr_led_trigger
++        pwr_led_activelow
++        pwr_led_gpio
++                                As for act_led_*, but using the PWR LED.
++                                Not available on Model A/B boards.
++
++        N.B. It is recommended to only enable those interfaces that are needed.
++        Leaving all interfaces enabled can lead to unwanted behaviour (i2c_vc
++        interfering with Pi Camera, I2S and SPI hogging GPIO pins, etc.)
++        Note also that i2c, i2c_arm and i2c_vc are aliases for the physical
++        interfaces i2c0 and i2c1. Use of the numeric variants is still possible
++        but deprecated because the ARM/VC assignments differ between board
++        revisions. The same board-specific mapping applies to i2c_baudrate,
++        and the other i2c baudrate parameters.
++
++
++Name:   act-led
++Info:   Pi 3B, 3B+, 3A+ and 4B use a GPIO expander to drive the LEDs which can
++        only be accessed from the VPU. There is a special driver for this with a
++        separate DT node, which has the unfortunate consequence of breaking the
++        act_led_gpio and act_led_activelow dtparams.
++        This overlay changes the GPIO controller back to the standard one and
++        restores the dtparams.
++Load:   dtoverlay=act-led,<param>=<val>
++Params: activelow               Set to "on" to invert the sense of the LED
++                                (default "off")
++
++        gpio                    Set which GPIO to use for the activity LED
++                                (in case you want to connect it to an external
++                                device)
++                                REQUIRED
++
++
++Name:   adafruit18
++Info:   Overlay for the SPI-connected Adafruit 1.8" display (based on the
++        ST7735R chip). It includes support for the "green tab" version.
++Load:   dtoverlay=adafruit18,<param>=<val>
++Params: green                   Use the adafruit18_green variant.
++        rotate                  Display rotation {0,90,180,270}
++        speed                   SPI bus speed in Hz (default 4000000)
++        fps                     Display frame rate in Hz
++        bgr                     Enable BGR mode (default off)
++        debug                   Debug output level {0-7}
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++        led_pin                 GPIO used to control backlight (default 18)
++
++
++Name:   adau1977-adc
++Info:   Overlay for activation of ADAU1977 ADC codec over I2C for control
++        and I2S for data.
++Load:   dtoverlay=adau1977-adc
++Params: <None>
++
++
++Name:   adau7002-simple
++Info:   Overlay for the activation of ADAU7002 stereo PDM to I2S converter.
++Load:   dtoverlay=adau7002-simple,<param>=<val>
++Params: card-name               Override the default, "adau7002", card name.
++
++
++Name:   ads1015
++Info:   Overlay for activation of Texas Instruments ADS1015 ADC over I2C
++Load:   dtoverlay=ads1015,<param>=<val>
++Params: addr                    I2C bus address of device. Set based on how the
++                                addr pin is wired. (default=0x48 assumes addr
++                                is pulled to GND)
++        cha_enable              Enable virtual channel a. (default=true)
++        cha_cfg                 Set the configuration for virtual channel a.
++                                (default=4 configures this channel for the
++                                voltage at A0 with respect to GND)
++        cha_datarate            Set the datarate (samples/sec) for this channel.
++                                (default=4 sets 1600 sps)
++        cha_gain                Set the gain of the Programmable Gain
++                                Amplifier for this channel. (default=2 sets the
++                                full scale of the channel to 2.048 Volts)
++
++        Channel (ch) parameters can be set for each enabled channel.
++        A maximum of 4 channels can be enabled (letters a thru d).
++        For more information refer to the device datasheet at:
++        http://www.ti.com/lit/ds/symlink/ads1015.pdf
++
++
++Name:   ads1115
++Info:   Texas Instruments ADS1115 ADC
++Load:   dtoverlay=ads1115,<param>[=<val>]
++Params: addr                    I2C bus address of device. Set based on how the
++                                addr pin is wired. (default=0x48 assumes addr
++                                is pulled to GND)
++        cha_enable              Enable virtual channel a.
++        cha_cfg                 Set the configuration for virtual channel a.
++                                (default=4 configures this channel for the
++                                voltage at A0 with respect to GND)
++        cha_datarate            Set the datarate (samples/sec) for this channel.
++                                (default=7 sets 860 sps)
++        cha_gain                Set the gain of the Programmable Gain
++                                Amplifier for this channel. (Default 1 sets the
++                                full scale of the channel to 4.096 Volts)
++
++        Channel parameters can be set for each enabled channel.
++        A maximum of 4 channels can be enabled (letters a thru d).
++        For more information refer to the device datasheet at:
++        http://www.ti.com/lit/ds/symlink/ads1115.pdf
++
++
++Name:   ads7846
++Info:   ADS7846 Touch controller
++Load:   dtoverlay=ads7846,<param>=<val>
++Params: cs                      SPI bus Chip Select (default 1)
++        speed                   SPI bus speed (default 2MHz, max 3.25MHz)
++        penirq                  GPIO used for PENIRQ. REQUIRED
++        penirq_pull             Set GPIO pull (default 0=none, 2=pullup)
++        swapxy                  Swap x and y axis
++        xmin                    Minimum value on the X axis (default 0)
++        ymin                    Minimum value on the Y axis (default 0)
++        xmax                    Maximum value on the X axis (default 4095)
++        ymax                    Maximum value on the Y axis (default 4095)
++        pmin                    Minimum reported pressure value (default 0)
++        pmax                    Maximum reported pressure value (default 65535)
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++                                (default 400)
++
++        penirq is required and usually xohms (60-100) has to be set as well.
++        Apart from that, pmax (255) and swapxy are also common.
++        The rest of the calibration can be done with xinput-calibrator.
++        See: github.com/notro/fbtft/wiki/FBTFT-on-Raspian
++        Device Tree binding document:
++        www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt
++
++
++Name:   adv7282m
++Info:   Analog Devices ADV7282M analogue video to CSI2 bridge.
++        Uses Unicam1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=adv7282m,<param>=<val>
++Params: addr                    Overrides the I2C address (default 0x21)
++
++
++Name:   adv728x-m
++Info:   Analog Devices ADV728[0|1|2]-M analogue video to CSI2 bridges.
++        This is a wrapper for adv7282m, and defaults to ADV7282M.
++Load:   dtoverlay=adv728x-m,<param>=<val>
++Params: addr                    Overrides the I2C address (default 0x21)
++        adv7280m                Select ADV7280-M.
++        adv7281m                Select ADV7281-M.
++        adv7281ma               Select ADV7281-MA.
++
++
++Name:   akkordion-iqdacplus
++Info:   Configures the Digital Dreamtime Akkordion Music Player (based on the
++        OEM IQAudIO DAC+ or DAC Zero module).
++Load:   dtoverlay=akkordion-iqdacplus,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                dtoverlay=akkordion-iqdacplus,24db_digital_gain
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24db_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++
++
++Name:   allo-boss-dac-pcm512x-audio
++Info:   Configures the Allo Boss DAC audio cards.
++Load:   dtoverlay=allo-boss-dac-pcm512x-audio,<param>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=allo-boss-dac-pcm512x-audio,
++                                24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24db_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        slave                   Force Boss DAC into slave mode, using Pi a
++                                master for bit clock and frame clock. Enable
++                                with "dtoverlay=allo-boss-dac-pcm512x-audio,
++                                slave"
++
++
++Name:   allo-boss2-dac-audio
++Info:   Configures the Allo Boss2 DAC audio card
++Load:   dtoverlay=allo-boss2-dac-audio
++Params: <None>
++
++
++Name:   allo-digione
++Info:   Configures the Allo Digione audio card
++Load:   dtoverlay=allo-digione
++Params: <None>
++
++
++Name:   allo-katana-dac-audio
++Info:   Configures the Allo Katana DAC audio card
++Load:   dtoverlay=allo-katana-dac-audio
++Params: <None>
++
++
++Name:   allo-piano-dac-pcm512x-audio
++Info:   Configures the Allo Piano DAC (2.0/2.1) audio cards.
++        (NB. This initial support is for 2.0 channel audio ONLY! ie. stereo.
++        The subwoofer outputs on the Piano 2.1 are not currently supported!)
++Load:   dtoverlay=allo-piano-dac-pcm512x-audio,<param>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control.
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24db_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++
++
++Name:   allo-piano-dac-plus-pcm512x-audio
++Info:   Configures the Allo Piano DAC (2.1) audio cards.
++Load:   dtoverlay=allo-piano-dac-plus-pcm512x-audio,<param>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control.
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24db_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        glb_mclk                This option is only with Kali board. If enabled,
++                                MCLK for Kali is used and PLL is disabled for
++                                better voice quality. (default Off)
++
++
++Name:   anyspi
++Info:   Universal device tree overlay for SPI devices
++
++        Just specify the SPI address and device name ("compatible" property).
++        This overlay lacks any device-specific parameter support!
++
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++
++        Examples:
++        1. SPI NOR flash on spi0.1, maximum SPI clock frequency 45MHz:
++            dtoverlay=anyspi:spi0-1,dev="jedec,spi-nor",speed=45000000
++        2. MCP3204 ADC on spi1.2, maximum SPI clock frequency 500kHz:
++            dtoverlay=anyspi:spi1-2,dev="microchip,mcp3204"
++Load:   dtoverlay=anyspi,<param>=<val>
++Params: spi<n>-<m>              Configure device at spi<n>, cs<m>
++                                (boolean, required)
++        dev                     Set device name to search compatible module
++                                (string, required)
++        speed                   Set SPI clock frequency in Hz
++                                (integer, optional, default 500000)
++
++
++Name:   apds9960
++Info:   Configures the AVAGO APDS9960 digital proximity, ambient light, RGB and
++        gesture sensor
++Load:   dtoverlay=apds9960,<param>=<val>
++Params: gpiopin                 GPIO used for INT (default 4)
++        noints                  Disable the interrupt GPIO line.
++
++
++Name:   applepi-dac
++Info:   Configures the Orchard Audio ApplePi-DAC audio card
++Load:   dtoverlay=applepi-dac
++Params: <None>
++
++
++Name:   at86rf233
++Info:   Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
++        connected to spi0.0
++Load:   dtoverlay=at86rf233,<param>=<val>
++Params: interrupt               GPIO used for INT (default 23)
++        reset                   GPIO used for Reset (default 24)
++        sleep                   GPIO used for Sleep (default 25)
++        speed                   SPI bus speed in Hz (default 3000000)
++        trim                    Fine tuning of the internal capacitance
++                                arrays (0=+0pF, 15=+4.5pF, default 15)
++
++
++Name:   audioinjector-addons
++Info:   Configures the audioinjector.net audio add on soundcards
++Load:   dtoverlay=audioinjector-addons,<param>=<val>
++Params: non-stop-clocks         Keeps the clocks running even when the stream
++                                is paused or stopped (default off)
++
++
++Name:   audioinjector-isolated-soundcard
++Info:   Configures the audioinjector.net isolated soundcard
++Load:   dtoverlay=audioinjector-isolated-soundcard
++Params: <None>
++
++
++Name:   audioinjector-ultra
++Info:   Configures the audioinjector.net ultra soundcard
++Load:   dtoverlay=audioinjector-ultra
++Params: <None>
++
++
++Name:   audioinjector-wm8731-audio
++Info:   Configures the audioinjector.net audio add on soundcard
++Load:   dtoverlay=audioinjector-wm8731-audio
++Params: <None>
++
++
++Name:   audiosense-pi
++Info:   Configures the audiosense-pi add on soundcard
++        For more information refer to
++        https://gitlab.com/kakar0t/audiosense-pi
++Load:   dtoverlay=audiosense-pi
++Params: <None>
++
++
++Name:   audremap
++Info:   Switches PWM sound output to GPIOs on the 40-pin header
++Load:   dtoverlay=audremap,<param>=<val>
++Params: swap_lr                 Reverse the channel allocation, which will also
++                                swap the audio jack outputs (default off)
++        enable_jack             Don't switch off the audio jack output
++                                (default off)
++        pins_12_13              Select GPIOs 12 & 13 (default)
++        pins_18_19              Select GPIOs 18 & 19
++
++
++Name:   balena-fin
++Info:   Overlay that enables WLAN, Bluetooth and the GPIO expander on the
++        balenaFin carrier board for the Raspberry Pi Compute Module 3/3+ Lite.
++Load:   dtoverlay=balena-fin
++Params: <None>
++
++
++Name:   bmp085_i2c-sensor
++Info:   This overlay is now deprecated - see i2c-sensor
++Load:   <Deprecated>
++
++
++Name:   cap1106
++Info:   Enables the ability to use the cap1106 touch sensor as a keyboard
++Load:   dtoverlay=cap1106,<param>=<val>
++Params: int_pin                 GPIO pin for interrupt signal (default 23)
++
++
++Name:   chipdip-dac
++Info:   Configures Chip Dip audio cards.
++Load:   dtoverlay=chipdip-dac
++Params: <None>
++
++
++Name:   cma
++Info:   Set custom CMA sizes, only use if you know what you are doing, might
++        clash with other overlays like vc4-fkms-v3d and vc4-kms-v3d.
++Load:   dtoverlay=cma,<param>=<val>
++Params: cma-512                 CMA is 512MB (needs 1GB)
++        cma-448                 CMA is 448MB (needs 1GB)
++        cma-384                 CMA is 384MB (needs 1GB)
++        cma-320                 CMA is 320MB (needs 1GB)
++        cma-256                 CMA is 256MB (needs 1GB)
++        cma-192                 CMA is 192MB (needs 1GB)
++        cma-128                 CMA is 128MB
++        cma-96                  CMA is 96MB
++        cma-64                  CMA is 64MB
++        cma-size                CMA size in bytes, 4MB aligned
++        cma-default             Use upstream's default value
++
++
++Name:   dht11
++Info:   Overlay for the DHT11/DHT21/DHT22 humidity/temperature sensors
++        Also sometimes found with the part number(s) AM230x.
++Load:   dtoverlay=dht11,<param>=<val>
++Params: gpiopin                 GPIO connected to the sensor's DATA output.
++                                (default 4)
++
++
++Name:   dionaudio-loco
++Info:   Configures the Dion Audio LOCO DAC-AMP
++Load:   dtoverlay=dionaudio-loco
++Params: <None>
++
++
++Name:   dionaudio-loco-v2
++Info:   Configures the Dion Audio LOCO-V2 DAC-AMP
++Load:   dtoverlay=dionaudio-loco-v2,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=hifiberry-dacplus,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++
++
++Name:   disable-bt
++Info:   Disable onboard Bluetooth on Pi 3B, 3B+, 3A+, 4B and Zero W, restoring
++        UART0/ttyAMA0 over GPIOs 14 & 15.
++        N.B. To disable the systemd service that initialises the modem so it
++        doesn't use the UART, use 'sudo systemctl disable hciuart'.
++Load:   dtoverlay=disable-bt
++Params: <None>
++
++
++Name:   disable-wifi
++Info:   Disable onboard WLAN on Pi 3B, 3B+, 3A+, 4B and Zero W.
++Load:   dtoverlay=disable-wifi
++Params: <None>
++
++
++Name:   dpi18
++Info:   Overlay for a generic 18-bit DPI display
++        This uses GPIOs 0-21 (so no I2C, uart etc.), and activates the output
++        2-3 seconds after the kernel has started.
++Load:   dtoverlay=dpi18
++Params: <None>
++
++
++Name:   dpi18cpadhi
++Info:   Overlay for a generic 18-bit DPI display (in 'mode 6' connection scheme)
++        This uses GPIOs 0-9,12-17,20-25 (so no I2C, uart etc.), and activates
++        the output 3-3 seconds after the kernel has started.
++Load:   dtoverlay=dpi18cpadhi
++Params: <None>
++
++
++Name:   dpi24
++Info:   Overlay for a generic 24-bit DPI display
++        This uses GPIOs 0-27 (so no I2C, uart etc.), and activates the output
++        2-3 seconds after the kernel has started.
++Load:   dtoverlay=dpi24
++Params: <None>
++
++
++Name:   draws
++Info:   Configures the NW Digital Radio DRAWS Hat
++
++        The board includes an ADC to measure various board values and also
++        provides two analog user inputs on the expansion header.  The ADC
++        can be configured for various sample rates and gain values to adjust
++        the input range.  Tables describing the two parameters follow.
++
++        ADC Gain Values:
++            0 = +/- 6.144V
++            1 = +/- 4.096V
++            2 = +/- 2.048V
++            3 = +/- 1.024V
++            4 = +/- 0.512V
++            5 = +/- 0.256V
++            6 = +/- 0.256V
++            7 = +/- 0.256V
++
++        ADC Datarate Values:
++            0 = 128sps
++            1 = 250sps
++            2 = 490sps
++            3 = 920sps
++            4 = 1600sps (default)
++            5 = 2400sps
++            6 = 3300sps
++            7 = 3300sps
++Load:   dtoverlay=draws,<param>=<val>
++Params: draws_adc_ch4_gain      Sets the full scale resolution of the ADCs
++                                input voltage sensor (default 1)
++
++        draws_adc_ch4_datarate  Sets the datarate of the ADCs input voltage
++                                sensor
++
++        draws_adc_ch5_gain      Sets the full scale resolution of the ADCs
++                                5V rail voltage sensor (default 1)
++
++        draws_adc_ch5_datarate  Sets the datarate of the ADCs 4V rail voltage
++                                sensor
++
++        draws_adc_ch6_gain      Sets the full scale resolution of the ADCs
++                                AIN2 input (default 2)
++
++        draws_adc_ch6_datarate  Sets the datarate of the ADCs AIN2 input
++
++        draws_adc_ch7_gain      Sets the full scale resolution of the ADCs
++                                AIN3 input (default 2)
++
++        draws_adc_ch7_datarate  Sets the datarate of the ADCs AIN3 input
++
++        alsaname                Name of the ALSA audio device (default "draws")
++
++
++Name:   dwc-otg
++Info:   Selects the dwc_otg USB controller driver which has fiq support. This
++        is the default on all except the Pi Zero which defaults to dwc2.
++Load:   dtoverlay=dwc-otg
++Params: <None>
++
++
++Name:   dwc2
++Info:   Selects the dwc2 USB controller driver
++Load:   dtoverlay=dwc2,<param>=<val>
++Params: dr_mode                 Dual role mode: "host", "peripheral" or "otg"
++
++        g-rx-fifo-size          Size of rx fifo size in gadget mode
++
++        g-np-tx-fifo-size       Size of non-periodic tx fifo size in gadget
++                                mode
++
++
++[ The ds1307-rtc overlay has been deleted. See i2c-rtc. ]
++
++
++Name:   edt-ft5406
++Info:   Overlay for the EDT FT5406 touchscreen on the CSI/DSI I2C interface.
++        This works with the Raspberry Pi 7" touchscreen when not being polled
++        by the firmware.
++        You MUST use either "disable_touchscreen=1" or "ignore_lcd=1" in
++        config.txt to stop the firmware polling the touchscreen.
++Load:   dtoverlay=edt-ft5406,<param>=<val>
++Params: sizex                   Touchscreen size x (default 800)
++        sizey                   Touchscreen size y (default 480)
++        invx                    Touchscreen inverted x axis
++        invy                    Touchscreen inverted y axis
++        swapxy                  Touchscreen swapped x y axis
++
++
++Name:   enc28j60
++Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI0
++Load:   dtoverlay=enc28j60,<param>=<val>
++Params: int_pin                 GPIO used for INT (default 25)
++
++        speed                   SPI bus speed (default 12000000)
++
++
++Name:   enc28j60-spi2
++Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI2
++Load:   dtoverlay=enc28j60-spi2,<param>=<val>
++Params: int_pin                 GPIO used for INT (default 39)
++
++        speed                   SPI bus speed (default 12000000)
++
++
++Name:   exc3000
++Info:   Enables I2C connected EETI EXC3000 multiple touch controller using
++        GPIO 4 (pin 7 on GPIO header) for interrupt.
++Load:   dtoverlay=exc3000,<param>=<val>
++Params: interrupt               GPIO used for interrupt (default 4)
++        sizex                   Touchscreen size x (default 4096)
++        sizey                   Touchscreen size y (default 4096)
++        invx                    Touchscreen inverted x axis
++        invy                    Touchscreen inverted y axis
++        swapxy                  Touchscreen swapped x y axis
++
++
++Name:   fe-pi-audio
++Info:   Configures the Fe-Pi Audio Sound Card
++Load:   dtoverlay=fe-pi-audio
++Params: <None>
++
++
++Name:   fsm-demo
++Info:   A demonstration of the gpio-fsm driver. The GPIOs are chosen to work
++        nicely with a "traffic-light" display of red, amber and green LEDs on
++        GPIOs 7, 8 and 25 respectively.
++Load:   dtoverlay=fsm-demo,<param>=<val>
++Params: fsm_debug               Enable debug logging (default off)
++
++
++Name:   ghost-amp
++Info:   An overlay for the Ghost amplifier.
++Load:   dtoverlay=ghost-amp,<param>=<val>
++Params: fsm_debug               Enable debug logging of the GPIO FSM (default
++                                off)
++
++
++Name:   goodix
++Info:   Enables I2C connected Goodix gt9271 multiple touch controller using
++        GPIOs 4 and 17 (pins 7 and 11 on GPIO header) for interrupt and reset.
++Load:   dtoverlay=goodix,<param>=<val>
++Params: interrupt               GPIO used for interrupt (default 4)
++        reset                   GPIO used for reset (default 17)
++
++
++Name:   googlevoicehat-soundcard
++Info:   Configures the Google voiceHAT soundcard
++Load:   dtoverlay=googlevoicehat-soundcard
++Params: <None>
++
++
++Name:   gpio-fan
++Info:   Configure a GPIO pin to control a cooling fan.
++Load:   dtoverlay=gpio-fan,<param>=<val>
++Params: gpiopin                 GPIO used to control the fan (default 12)
++        temp                    Temperature at which the fan switches on, in
++                                millicelcius (default 55000)
++
++
++Name:   gpio-ir
++Info:   Use GPIO pin as rc-core style infrared receiver input. The rc-core-
++        based gpio_ir_recv driver maps received keys directly to a
++        /dev/input/event* device, all decoding is done by the kernel - LIRC is
++        not required! The key mapping and other decoding parameters can be
++        configured by "ir-keytable" tool.
++Load:   dtoverlay=gpio-ir,<param>=<val>
++Params: gpio_pin                Input pin number. Default is 18.
++
++        gpio_pull               Desired pull-up/down state (off, down, up)
++                                Default is "up".
++
++        invert                  "1" = invert the input (active-low signalling).
++                                "0" = non-inverted input (active-high
++                                signalling). Default is "1".
++
++        rc-map-name             Default rc keymap (can also be changed by
++                                ir-keytable), defaults to "rc-rc6-mce"
++
++
++Name:   gpio-ir-tx
++Info:   Use GPIO pin as bit-banged infrared transmitter output.
++        This is an alternative to "pwm-ir-tx". gpio-ir-tx doesn't require
++        a PWM so it can be used together with onboard analog audio.
++Load:   dtoverlay=gpio-ir-tx,<param>=<val>
++Params: gpio_pin                Output GPIO (default 18)
++
++        invert                  "1" = invert the output (make it active-low).
++                                Default is "0" (active-high).
++
++
++Name:   gpio-key
++Info:   This is a generic overlay for activating GPIO keypresses using
++        the gpio-keys library and this dtoverlay. Multiple keys can be
++        set up using multiple calls to the overlay for configuring
++        additional buttons or joysticks. You can see available keycodes
++        at https://github.com/torvalds/linux/blob/v4.12/include/uapi/
++        linux/input-event-codes.h#L64
++Load:   dtoverlay=gpio-key,<param>=<val>
++Params: gpio                    GPIO pin to trigger on (default 3)
++        active_low              When this is 1 (active low), a falling
++                                edge generates a key down event and a
++                                rising edge generates a key up event.
++                                When this is 0 (active high), this is
++                                reversed. The default is 1 (active low)
++        gpio_pull               Desired pull-up/down state (off, down, up)
++                                Default is "up". Note that the default pin
++                                (GPIO3) has an external pullup
++        label                   Set a label for the key
++        keycode                 Set the key code for the button
++
++
++
++Name:   gpio-led
++Info:   This is a generic overlay for activating LEDs (or any other component)
++        by a GPIO pin. Multiple LEDs can be set up using multiple calls to the
++        overlay. While there are many existing methods to activate LEDs on the
++        RPi, this method offers some advantages:
++        1) Does not require any userspace programs.
++        2) LEDs can be connected to the kernel's led-trigger framework,
++           and drive the LED based on triggers such as cpu load, heartbeat,
++           kernel panic, key input, timers and others.
++        3) LED can be tied to the input state of another GPIO pin.
++        4) The LED is setup early during the kernel boot process (useful
++           for cpu/heartbeat/panic triggers).
++
++        Typical electrical connection is:
++           RPI-GPIO.19  ->  LED  -> 300ohm resister  -> RPI-GND
++        The GPIO pin number can be changed with the 'gpio=' parameter.
++
++        To control an LED from userspace, write a 0 or 1 value:
++           echo 1 > /sys/class/leds/myled1/brightness
++        The 'myled1' name can be changed with the 'label=' parameter.
++
++        To connect the LED to a kernel trigger from userspace:
++           echo cpu > /sys/class/leds/myled1/trigger
++           echo heartbeat > /sys/class/leds/myled1/trigger
++           echo none > /sys/class/leds/myled1/trigger
++        To connect the LED to GPIO.26 pin (physical pin 37):
++           echo gpio > /sys/class/leds/myled1/trigger
++           echo 26 > /sys/class/leds/myled1/gpio
++        Available triggers:
++           cat /sys/class/leds/myled1/trigger
++
++        More information about the Linux kernel LED/Trigger system:
++           https://www.kernel.org/doc/Documentation/leds/leds-class.rst
++           https://www.kernel.org/doc/Documentation/leds/ledtrig-oneshot.rst
++Load:   dtoverlay=gpio-led,<param>=<val>
++Params: gpio                    GPIO pin connected to the LED (default 19)
++        label                   The label for this LED. It will appear under
++                                /sys/class/leds/<label> . Default 'myled1'.
++        trigger                 Set the led-trigger to connect to this LED.
++                                default 'none' (LED is user-controlled).
++                                Some possible triggers:
++                                 cpu - CPU load (all CPUs)
++                                 cpu0 - CPU load of first CPU.
++                                 mmc - disk activity (all disks)
++                                 panic - turn on on kernel panic
++                                 heartbeat - indicate system health
++                                 gpio - connect to a GPIO input pin (note:
++                                        currently the GPIO PIN can not be set
++                                        using overlay parameters, must be
++                                        done in userspace, see examples above.
++        active_low              Set to 1 to turn invert the LED control
++                                (writing 0 to /sys/class/leds/XXX/brightness
++                                will turn on the GPIO/LED). Default '0'.
++
++
++Name:   gpio-no-bank0-irq
++Info:   Use this overlay to disable GPIO interrupts for GPIOs in bank 0 (0-27),
++        which can be useful for UIO drivers.
++        N.B. Using this overlay will trigger a kernel WARN during booting, but
++        this can safely be ignored - the system should work as expected.
++Load:   dtoverlay=gpio-no-bank0-irq
++Params: <None>
++
++
++Name:   gpio-no-irq
++Info:   Use this overlay to disable all GPIO interrupts, which can be useful
++        for user-space GPIO edge detection systems.
++Load:   dtoverlay=gpio-no-irq
++Params: <None>
++
++
++Name:   gpio-poweroff
++Info:   Drives a GPIO high or low on poweroff (including halt). Using this
++        overlay interferes with the normal power-down sequence, preventing the
++        kernel from resetting the SoC (a necessary step in a normal power-off
++        or reboot). This also disables the ability to trigger a boot by driving
++        GPIO3 low.
++
++        Users of this overlay are required to provide an external mechanism to
++        switch off the power supply when signalled - failure to do so results
++        in a kernel BUG, increased power consumption and undefined behaviour.
++Load:   dtoverlay=gpio-poweroff,<param>=<val>
++Params: gpiopin                 GPIO for signalling (default 26)
++
++        active_low              Set if the power control device requires a
++                                high->low transition to trigger a power-down.
++                                Note that this will require the support of a
++                                custom dt-blob.bin to prevent a power-down
++                                during the boot process, and that a reboot
++                                will also cause the pin to go low.
++        input                   Set if the gpio pin should be configured as
++                                an input.
++        export                  Set to export the configured pin to sysfs
++        timeout_ms              Specify (in ms) how long the kernel waits for
++                                power-down before issuing a WARN (default 3000).
++
++
++Name:   gpio-shutdown
++Info:   Initiates a shutdown when GPIO pin changes. The given GPIO pin
++        is configured as an input key that generates KEY_POWER events.
++
++        This event is handled by systemd-logind by initiating a
++        shutdown. Systemd versions older than 225 need an udev rule
++        enable listening to the input device:
++
++                ACTION!="REMOVE", SUBSYSTEM=="input", KERNEL=="event*", \
++                        SUBSYSTEMS=="platform", DRIVERS=="gpio-keys", \
++                        ATTRS{keys}=="116", TAG+="power-switch"
++
++        Alternatively this event can be handled also on systems without
++        systemd, just by traditional SysV init daemon. KEY_POWER event
++        (keycode 116) needs to be mapped to KeyboardSignal on console
++        and then kb::kbrequest inittab action which is triggered by
++        KeyboardSignal from console can be configured to issue system
++        shutdown. Steps for this configuration are:
++
++            Add following lines to the /etc/console-setup/remap.inc file:
++
++                # Key Power as special keypress
++                keycode 116 = KeyboardSignal
++
++            Then add following lines to /etc/inittab file:
++
++                # Action on special keypress (Key Power)
++                kb::kbrequest:/sbin/shutdown -t1 -a -h -P now
++
++            And finally reload configuration by calling following commands:
++
++                # dpkg-reconfigure console-setup
++                # service console-setup reload
++                # init q
++
++        This overlay only handles shutdown. After shutdown, the system
++        can be powered up again by driving GPIO3 low. The default
++        configuration uses GPIO3 with a pullup, so if you connect a
++        button between GPIO3 and GND (pin 5 and 6 on the 40-pin header),
++        you get a shutdown and power-up button. Please note that
++        Raspberry Pi 1 Model B rev 1 uses GPIO1 instead of GPIO3.
++Load:   dtoverlay=gpio-shutdown,<param>=<val>
++Params: gpio_pin                GPIO pin to trigger on (default 3)
++                                For Raspberry Pi 1 Model B rev 1 set this
++                                explicitly to value 1, e.g.:
++
++                                    dtoverlay=gpio-shutdown,gpio_pin=1
++
++        active_low              When this is 1 (active low), a falling
++                                edge generates a key down event and a
++                                rising edge generates a key up event.
++                                When this is 0 (active high), this is
++                                reversed. The default is 1 (active low).
++
++        gpio_pull               Desired pull-up/down state (off, down, up)
++                                Default is "up".
++
++                                Note that the default pin (GPIO3) has an
++                                external pullup. Same applies for GPIO1
++                                on Raspberry Pi 1 Model B rev 1.
++
++        debounce                Specify the debounce interval in milliseconds
++                                (default 100)
++
++
++Name:   hd44780-lcd
++Info:   Configures an HD44780 compatible LCD display. Uses 4 gpio pins for
++        data, 2 gpio pins for enable and register select and 1 optional pin
++        for enabling/disabling the backlight display.
++Load:   dtoverlay=hd44780-lcd,<param>=<val>
++Params: pin_d4                  GPIO pin for data pin D4 (default 6)
++
++        pin_d5                  GPIO pin for data pin D5 (default 13)
++
++        pin_d6                  GPIO pin for data pin D6 (default 19)
++
++        pin_d7                  GPIO pin for data pin D7 (default 26)
++
++        pin_en                  GPIO pin for "Enable" (default 21)
++
++        pin_rs                  GPIO pin for "Register Select" (default 20)
++
++        pin_bl                  Optional pin for enabling/disabling the
++                                display backlight. (default disabled)
++
++        display_height          Height of the display in characters
++
++        display_width           Width of the display in characters
++
++
++Name:   hdmi-backlight-hwhack-gpio
++Info:   Devicetree overlay for GPIO based backlight on/off capability.
++        Use this if you have one of those HDMI displays whose backlight cannot
++        be controlled via DPMS over HDMI and plan to do a little soldering to
++        use an RPi gpio pin for on/off switching. See:
++        https://www.waveshare.com/wiki/7inch_HDMI_LCD_(C)#Backlight_Control
++Load:   dtoverlay=hdmi-backlight-hwhack-gpio,<param>=<val>
++Params: gpio_pin                GPIO pin used (default 17)
++        active_low              Set this to 1 if the display backlight is
++                                switched on when the wire goes low.
++                                Leave the default (value 0) if the backlight
++                                expects a high to switch it on.
++
++
++Name:   hifiberry-amp
++Info:   Configures the HifiBerry Amp and Amp+ audio cards
++Load:   dtoverlay=hifiberry-amp
++Params: <None>
++
++
++Name:   hifiberry-amp100
++Info:   Configures the HifiBerry AMP100 audio card
++Load:   dtoverlay=hifiberry-amp100,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=hifiberry-amp100,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        slave                   Force DAC+ Pro into slave mode, using Pi as
++                                master for bit clock and frame clock.
++        leds_off                If set to 'true' the onboard indicator LEDs
++                                are switched off at all times.
++        auto_mute               If set to 'true' the amplifier is automatically
++                                muted when the DAC is not playing.
++        mute_ext_ctl            The amplifier's HW mute control is enabled
++                                in ALSA mixer and set to <val>.
++                                Will be overwritten by ALSA user settings.
++
++
++Name:   hifiberry-dac
++Info:   Configures the HifiBerry DAC audio cards
++Load:   dtoverlay=hifiberry-dac
++Params: <None>
++
++
++Name:   hifiberry-dacplus
++Info:   Configures the HifiBerry DAC+ audio card
++Load:   dtoverlay=hifiberry-dacplus,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=hifiberry-dacplus,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        slave                   Force DAC+ Pro into slave mode, using Pi as
++                                master for bit clock and frame clock.
++        leds_off                If set to 'true' the onboard indicator LEDs
++                                are switched off at all times.
++
++
++Name:   hifiberry-dacplusadc
++Info:   Configures the HifiBerry DAC+ADC audio card
++Load:   dtoverlay=hifiberry-dacplusadc,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=hifiberry-dacplus,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        slave                   Force DAC+ Pro into slave mode, using Pi as
++                                master for bit clock and frame clock.
++        leds_off                If set to 'true' the onboard indicator LEDs
++                                are switched off at all times.
++
++
++Name:   hifiberry-dacplusadcpro
++Info:   Configures the HifiBerry DAC+ADC PRO audio card
++Load:   dtoverlay=hifiberry-dacplusadcpro,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=hifiberry-dacplusadcpro,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        slave                   Force DAC+ADC Pro into slave mode, using Pi as
++                                master for bit clock and frame clock.
++        leds_off                If set to 'true' the onboard indicator LEDs
++                                are switched off at all times.
++
++
++Name:   hifiberry-dacplusdsp
++Info:   Configures the HifiBerry DAC+DSP audio card
++Load:   dtoverlay=hifiberry-dacplusdsp
++Params: <None>
++
++
++Name:   hifiberry-dacplushd
++Info:   Configures the HifiBerry DAC+ HD audio card
++Load:   dtoverlay=hifiberry-dacplushd
++Params: <None>
++
++
++Name:   hifiberry-digi
++Info:   Configures the HifiBerry Digi and Digi+ audio card
++Load:   dtoverlay=hifiberry-digi
++Params: <None>
++
++
++Name:   hifiberry-digi-pro
++Info:   Configures the HifiBerry Digi+ Pro audio card
++Load:   dtoverlay=hifiberry-digi-pro
++Params: <None>
++
++
++Name:   highperi
++Info:   Enables "High Peripheral" mode
++Load:   dtoverlay=highperi
++Params: <None>
++
++
++Name:   hy28a
++Info:   HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics
++        Default values match Texy's display shield
++Load:   dtoverlay=hy28a,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++
++        resetgpio               GPIO used to reset controller
++
++        ledgpio                 GPIO used to control backlight
++
++
++Name:   hy28b
++Info:   HY28B - 2.8" TFT LCD Display Module by HAOYU Electronics
++        Default values match Texy's display shield
++Load:   dtoverlay=hy28b,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++
++        resetgpio               GPIO used to reset controller
++
++        ledgpio                 GPIO used to control backlight
++
++
++Name:   hy28b-2017
++Info:   HY28B 2017 version - 2.8" TFT LCD Display Module by HAOYU Electronics
++        Default values match Texy's display shield
++Load:   dtoverlay=hy28b-2017,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++
++        resetgpio               GPIO used to reset controller
++
++        ledgpio                 GPIO used to control backlight
++
++
++Name:   i-sabre-q2m
++Info:   Configures the Audiophonics I-SABRE Q2M DAC
++Load:   dtoverlay=i-sabre-q2m
++Params: <None>
++
++
++Name:   i2c-bcm2708
++Info:   Fall back to the i2c_bcm2708 driver for the i2c_arm bus.
++Load:   dtoverlay=i2c-bcm2708
++Params: <None>
++
++
++Name:   i2c-gpio
++Info:   Adds support for software i2c controller on gpio pins
++Load:   dtoverlay=i2c-gpio,<param>=<val>
++Params: i2c_gpio_sda            GPIO used for I2C data (default "23")
++
++        i2c_gpio_scl            GPIO used for I2C clock (default "24")
++
++        i2c_gpio_delay_us       Clock delay in microseconds
++                                (default "2" = ~100kHz)
++
++        bus                     Set to a unique, non-zero value if wanting
++                                multiple i2c-gpio busses. If set, will be used
++                                as the preferred bus number (/dev/i2c-<n>). If
++                                not set, the default value is 0, but the bus
++                                number will be dynamically assigned - probably
++                                3.
++
++
++Name:   i2c-mux
++Info:   Adds support for a number of I2C bus multiplexers on i2c_arm
++Load:   dtoverlay=i2c-mux,<param>=<val>
++Params: pca9542                 Select the NXP PCA9542 device
++
++        pca9545                 Select the NXP PCA9545 device
++
++        pca9548                 Select the NXP PCA9548 device
++
++        addr                    Change I2C address of the device (default 0x70)
++
++
++[ The i2c-mux-pca9548a overlay has been deleted. See i2c-mux. ]
++
++
++Name:   i2c-pwm-pca9685a
++Info:   Adds support for an NXP PCA9685A I2C PWM controller on i2c_arm
++Load:   dtoverlay=i2c-pwm-pca9685a,<param>=<val>
++Params: addr                    I2C address of PCA9685A (default 0x40)
++
++
++Name:   i2c-rtc
++Info:   Adds support for a number of I2C Real Time Clock devices
++Load:   dtoverlay=i2c-rtc,<param>=<val>
++Params: abx80x                  Select one of the ABx80x family:
++                                  AB0801, AB0803, AB0804, AB0805,
++                                  AB1801, AB1803, AB1804, AB1805
++
++        bq32000                 Select the TI BQ32000 device
++
++        ds1307                  Select the DS1307 device
++
++        ds1339                  Select the DS1339 device
++
++        ds1340                  Select the DS1340 device
++
++        ds3231                  Select the DS3231 device
++
++        m41t62                  Select the M41T62 device
++
++        mcp7940x                Select the MCP7940x device
++
++        mcp7941x                Select the MCP7941x device
++
++        pcf2127                 Select the PCF2127 device
++
++        pcf2129                 Select the PCF2129 device
++
++        pcf85063                Select the PCF85063 device
++
++        pcf85063a               Select the PCF85063A device
++
++        pcf8523                 Select the PCF8523 device
++
++        pcf85363                Select the PCF85363 device
++
++        pcf8563                 Select the PCF8563 device
++
++        rv1805                  Select the Micro Crystal RV1805 device
++
++        rv3028                  Select the Micro Crystal RV3028 device
++
++        sd3078                  Select the ZXW Shenzhen whwave SD3078 device
++
++        s35390a                 Select the ABLIC S35390A device
++
++        i2c0                    Choose the I2C0 bus on GPIOs 0&1
++
++        i2c_csi_dsi             Choose the I2C0 bus on GPIOs 44&45
++
++        addr                    Sets the address for the RTC. Note that the
++                                device must be configured to use the specified
++                                address.
++
++        trickle-diode-disable   Do not use the internal trickle charger diode
++                                (BQ32000 only)
++
++        trickle-diode-type      Diode type for trickle charge - "standard" or
++                                "schottky" (ABx80x and RV1805 only)
++
++        trickle-resistor-ohms   Resistor value for trickle charge (DS1339,
++                                ABx80x, RV1805, RV3028)
++
++        wakeup-source           Specify that the RTC can be used as a wakeup
++                                source
++
++        backup-switchover-mode  Backup power supply switch mode. Must be 0 for
++                                off or 1 for Vdd < VBackup (RV3028 only)
++
++
++Name:   i2c-rtc-gpio
++Info:   Adds support for a number of I2C Real Time Clock devices
++        using the software i2c controller
++Load:   dtoverlay=i2c-rtc-gpio,<param>=<val>
++Params: abx80x                  Select one of the ABx80x family:
++                                  AB0801, AB0803, AB0804, AB0805,
++                                  AB1801, AB1803, AB1804, AB1805
++
++        bq32000                 Select the TI BQ32000 device
++
++        ds1307                  Select the DS1307 device
++
++        ds1339                  Select the DS1339 device
++
++        ds1340                  Select the DS1340 device
++
++        ds3231                  Select the DS3231 device
++
++        m41t62                  Select the M41T62 device
++
++        mcp7940x                Select the MCP7940x device
++
++        mcp7941x                Select the MCP7941x device
++
++        pcf2127                 Select the PCF2127 device
++
++        pcf2129                 Select the PCF2129 device
++
++        pcf85063                Select the PCF85063 device
++
++        pcf85063a               Select the PCF85063A device
++
++        pcf8523                 Select the PCF8523 device
++
++        pcf85363                Select the PCF85363 device
++
++        pcf8563                 Select the PCF8563 device
++
++        rv1805                  Select the Micro Crystal RV1805 device
++
++        rv3028                  Select the Micro Crystal RV3028 device
++
++        sd3078                  Select the ZXW Shenzhen whwave SD3078 device
++
++        s35390a                 Select the ABLIC S35390A device
++
++        addr                    Sets the address for the RTC. Note that the
++                                device must be configured to use the specified
++                                address.
++
++        trickle-diode-disable   Do not use the internal trickle charger diode
++                                (BQ32000 only)
++
++        trickle-diode-type      Diode type for trickle charge - "standard" or
++                                "schottky" (ABx80x and RV1805 only)
++
++        trickle-resistor-ohms   Resistor value for trickle charge (DS1339,
++                                ABx80x, RV1805, RV3028)
++
++        wakeup-source           Specify that the RTC can be used as a wakeup
++                                source
++
++        backup-switchover-mode  Backup power supply switch mode. Must be 0 for
++                                off or 1 for Vdd < VBackup (RV3028 only)
++
++        i2c_gpio_sda            GPIO used for I2C data (default "23")
++
++        i2c_gpio_scl            GPIO used for I2C clock (default "24")
++
++        i2c_gpio_delay_us       Clock delay in microseconds
++                                (default "2" = ~100kHz)
++
++
++Name:   i2c-sensor
++Info:   Adds support for a number of I2C barometric pressure, temperature,
++        light level and chemical sensors on i2c_arm
++Load:   dtoverlay=i2c-sensor,<param>=<val>
++Params: addr                    Set the address for the BH1750, BME280, BME680,
++                                BMP280, CCS811, DS1621, HDC100X, LM75, SHT3x or
++                                TMP102
++
++        bh1750                  Select the Rohm BH1750 ambient light sensor
++                                Valid addresses 0x23 or 0x5c, default 0x23
++
++        bme280                  Select the Bosch Sensortronic BME280
++                                Valid addresses 0x76-0x77, default 0x76
++
++        bme680                  Select the Bosch Sensortronic BME680
++                                Valid addresses 0x76-0x77, default 0x76
++
++        bmp085                  Select the Bosch Sensortronic BMP085
++
++        bmp180                  Select the Bosch Sensortronic BMP180
++
++        bmp280                  Select the Bosch Sensortronic BMP280
++                                Valid addresses 0x76-0x77, default 0x76
++
++        ccs811                  Select the AMS CCS811 digital gas sensor
++                                Valid addresses 0x5a-0x5b, default 0x5b
++
++        ds1621                  Select the Dallas Semiconductors DS1621 temp
++                                sensor. Valid addresses 0x48-0x4f, default 0x48
++
++        hdc100x                 Select the Texas Instruments HDC100x temp sensor
++                                Valid addresses 0x40-0x43, default 0x40
++
++        htu21                   Select the HTU21 temperature and humidity sensor
++
++        lm75                    Select the Maxim LM75 temperature sensor
++                                Valid addresses 0x48-0x4f, default 0x4f
++
++        lm75addr                Deprecated - use addr parameter instead
++
++        max17040                Select the Maxim Integrated MAX17040 battery
++                                monitor
++
++        sht3x                   Select the Sensiron SHT3x temperature and
++                                humidity sensor. Valid addresses 0x44-0x45,
++                                default 0x44
++
++        si7020                  Select the Silicon Labs Si7013/20/21 humidity/
++                                temperature sensor
++
++        sps30                   Select the Sensirion SPS30 particulate matter
++                                sensor. Fixed address 0x69.
++
++        sgp30                   Select the Sensirion SGP30 VOC sensor.
++                                Fixed address 0x58.
++
++        tmp102                  Select the Texas Instruments TMP102 temp sensor
++                                Valid addresses 0x48-0x4b, default 0x48
++
++        tsl4531                 Select the AMS TSL4531 digital ambient light
++                                sensor
++
++        veml6070                Select the Vishay VEML6070 ultraviolet light
++                                sensor
++
++
++Name:   i2c0
++Info:   Change i2c0 pin usage. Not all pin combinations are usable on all
++        platforms - platforms other then Compute Modules can only use this
++        to disable transaction combining.
++        Do NOT use in conjunction with dtparam=i2c_vc=on. From the 5.4 kernel
++        onwards the base DT includes the use of i2c_mux_pinctrl to expose two
++        muxings of BSC0 - GPIOs 0&1, and whichever combination is used for the
++        camera and display connectors. This overlay disables that mux and
++        configures /dev/i2c0 to point at whichever set of pins is requested.
++        dtparam=i2c_vc=on will try and enable the mux, so combining the two
++        will cause conflicts.
++Load:   dtoverlay=i2c0,<param>=<val>
++Params: pins_0_1                Use pins 0 and 1 (default)
++        pins_28_29              Use pins 28 and 29
++        pins_44_45              Use pins 44 and 45
++        pins_46_47              Use pins 46 and 47
++        combine                 Allow transactions to be combined (default
++                                "yes")
++
++
++Name:   i2c0-bcm2708
++Info:   Deprecated, legacy version of i2c0.
++Load:   <Deprecated>
++
++
++Name:   i2c1
++Info:   Change i2c1 pin usage. Not all pin combinations are usable on all
++        platforms - platforms other then Compute Modules can only use this
++        to disable transaction combining.
++Load:   dtoverlay=i2c1,<param>=<val>
++Params: pins_2_3                Use pins 2 and 3 (default)
++        pins_44_45              Use pins 44 and 45
++        combine                 Allow transactions to be combined (default
++                                "yes")
++
++
++Name:   i2c1-bcm2708
++Info:   Deprecated, legacy version of i2c1.
++Load:   <Deprecated>
++
++
++Name:   i2c3
++Info:   Enable the i2c3 bus. BCM2711 only.
++Load:   dtoverlay=i2c3,<param>
++Params: pins_2_3                Use GPIOs 2 and 3
++        pins_4_5                Use GPIOs 4 and 5 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
++
++
++Name:   i2c4
++Info:   Enable the i2c4 bus. BCM2711 only.
++Load:   dtoverlay=i2c4,<param>
++Params: pins_6_7                Use GPIOs 6 and 7
++        pins_8_9                Use GPIOs 8 and 9 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
++
++
++Name:   i2c5
++Info:   Enable the i2c5 bus. BCM2711 only.
++Load:   dtoverlay=i2c5,<param>
++Params: pins_10_11              Use GPIOs 10 and 11
++        pins_12_13              Use GPIOs 12 and 13 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
++
++
++Name:   i2c6
++Info:   Enable the i2c6 bus. BCM2711 only.
++Load:   dtoverlay=i2c6,<param>
++Params: pins_0_1                Use GPIOs 0 and 1
++        pins_22_23              Use GPIOs 22 and 23 (default)
++        baudrate                Set the baudrate for the interface (default
++                                "100000")
++
++
++Name:   i2s-gpio28-31
++Info:   move I2S function block to GPIO 28 to 31
++Load:   dtoverlay=i2s-gpio28-31
++Params: <None>
++
++
++Name:   ilitek251x
++Info:   Enables I2C connected Ilitek 251x multiple touch controller using
++        GPIO 4 (pin 7 on GPIO header) for interrupt.
++Load:   dtoverlay=ilitek251x,<param>=<val>
++Params: interrupt               GPIO used for interrupt (default 4)
++        sizex                   Touchscreen size x, horizontal resolution of
++                                touchscreen (in pixels)
++        sizey                   Touchscreen size y, vertical resolution of
++                                touchscreen (in pixels)
++
++
++Name:   imx219
++Info:   Sony IMX219 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=imx219,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 180)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++
++
++Name:   imx290
++Info:   Sony IMX290 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants. NB This currently uses 4 CSI2 data lanes and therefore will
++        only work on a CM.
++Load:   dtoverlay=imx290,<param>
++Params: 4lane                   Enable 4 CSI2 lanes. This requires a Compute
++                                Module (1, 3, or 4).
++        clock-frequency         Sets the clock frequency to match that used on
++                                the board.
++                                Modules from Vision Components use 37.125MHz
++                                (the default), whilst those from Innomaker use
++                                74.25MHz.
++        mono                    Denote that the module is a mono sensor.
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++        rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 0)
++
++
++Name:   imx378
++Info:   Sony IMX378 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=imx378,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 180)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++
++
++Name:   imx477
++Info:   Sony IMX477 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=imx477,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 180)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++
++
++Name:   iqaudio-codec
++Info:   Configures the IQaudio Codec audio card
++Load:   dtoverlay=iqaudio-codec
++Params: <None>
++
++
++Name:   iqaudio-dac
++Info:   Configures the IQaudio DAC audio card
++Load:   dtoverlay=iqaudio-dac,<param>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=iqaudio-dac,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24db_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++
++
++Name:   iqaudio-dacplus
++Info:   Configures the IQaudio DAC+ audio card
++Load:   dtoverlay=iqaudio-dacplus,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=iqaudio-dacplus,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24db_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++        auto_mute_amp           If specified, unmute/mute the IQaudIO amp when
++                                starting/stopping audio playback.
++        unmute_amp              If specified, unmute the IQaudIO amp once when
++                                the DAC driver module loads.
++
++
++Name:   iqaudio-digi-wm8804-audio
++Info:   Configures the IQAudIO Digi WM8804 audio card
++Load:   dtoverlay=iqaudio-digi-wm8804-audio,<param>=<val>
++Params: card_name               Override the default, "IQAudIODigi", card name.
++        dai_name                Override the default, "IQAudIO Digi", dai name.
++        dai_stream_name         Override the default, "IQAudIO Digi HiFi",
++                                dai stream name.
++
++
++Name:   irs1125
++Info:   Infineon irs1125 TOF camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=irs1125
++Params: <None>
++
++
++Name:   jedec-spi-nor
++Info:   Adds support for JEDEC-compliant SPI NOR flash devices.  (Note: The
++        "jedec,spi-nor" kernel driver was formerly known as "m25p80".)
++Load:   dtoverlay=jedec-spi-nor,<param>=<val>
++Params: flash-spi<n>-<m>        Enables flash device on SPI<n>, CS#<m>.
++        flash-fastr-spi<n>-<m>  Enables flash device with fast read capability
++                                on SPI<n>, CS#<m>.
++
++
++Name:   justboom-both
++Info:   Simultaneous usage of an justboom-dac and justboom-digi based
++        card
++Load:   dtoverlay=justboom-both,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=justboom-dac,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++
++
++Name:   justboom-dac
++Info:   Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio
++        cards
++Load:   dtoverlay=justboom-dac,<param>=<val>
++Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
++                                Digital volume control. Enable with
++                                "dtoverlay=justboom-dac,24db_digital_gain"
++                                (The default behaviour is that the Digital
++                                volume control is limited to a maximum of
++                                0dB. ie. it can attenuate but not provide
++                                gain. For most users, this will be desired
++                                as it will prevent clipping. By appending
++                                the 24dB_digital_gain parameter, the Digital
++                                volume control will allow up to 24dB of
++                                gain. If this parameter is enabled, it is the
++                                responsibility of the user to ensure that
++                                the Digital volume control is set to a value
++                                that does not result in clipping/distortion!)
++
++
++Name:   justboom-digi
++Info:   Configures the JustBoom Digi HAT and Digi Zero audio cards
++Load:   dtoverlay=justboom-digi
++Params: <None>
++
++
++Name:   lirc-rpi
++Info:   This overlay has been deprecated and removed - see gpio-ir
++Load:   <Deprecated>
++
++
++Name:   ltc294x
++Info:   Adds support for the ltc294x family of battery gauges
++Load:   dtoverlay=ltc294x,<param>=<val>
++Params: ltc2941                 Select the ltc2941 device
++
++        ltc2942                 Select the ltc2942 device
++
++        ltc2943                 Select the ltc2943 device
++
++        ltc2944                 Select the ltc2944 device
++
++        resistor-sense          The sense resistor value in milli-ohms.
++                                Can be a 32-bit negative value when the battery
++                                has been connected to the wrong end of the
++                                resistor.
++
++        prescaler-exponent      Range and accuracy of the gauge. The value is
++                                programmed into the chip only if it differs
++                                from the current setting.
++                                For LTC2941 only:
++                                - Default value is 128
++                                - the exponent is in the range 0-7 (default 7)
++                                See the datasheet for more information.
++
++
++Name:   max98357a
++Info:   Configures the Maxim MAX98357A I2S DAC
++Load:   dtoverlay=max98357a,<param>=<val>
++Params: no-sdmode               Driver does not manage the state of the DAC's
++                                SD_MODE pin (i.e. chip is always on).
++        sdmode-pin              integer, GPIO pin connected to the SD_MODE input
++                                of the DAC (default GPIO4 if parameter omitted).
++
++
++Name:   maxtherm
++Info:   Configure a MAX6675, MAX31855 or MAX31856 thermocouple as an IIO device.
++
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++        The overlay expects to disable the relevant spidev node, so also using
++        e.g. cs0_spidev=off is unnecessary.
++
++        Example:
++        MAX31855 on /dev/spidev0.0
++            dtoverlay=maxtherm,spi0-0,max31855
++        MAX31856 using a type J thermocouple on /dev/spidev2.1
++            dtoverlay=spi2-2cs
++            dtoverlay=maxtherm,spi2-1,max31856,type_j
++
++Load:   dtoverlay=maxtherm,<param>=<val>
++Params: spi<n>-<m>              Configure device at spi<n>, cs<m>
++                                (boolean, required)
++        max6675                 Enable support for the MAX6675 (default)
++        max31855                Enable support for the MAX31855
++        max31855e               Enable support for the MAX31855E
++        max31855j               Enable support for the MAX31855J
++        max31855k               Enable support for the MAX31855K
++        max31855n               Enable support for the MAX31855N
++        max31855r               Enable support for the MAX31855R
++        max31855s               Enable support for the MAX31855S
++        max31855t               Enable support for the MAX31855T
++        max31856                Enable support for the MAX31856 (with type K)
++        type_b                  Select a type B sensor for max31856
++        type_e                  Select a type E sensor for max31856
++        type_j                  Select a type J sensor for max31856
++        type_k                  Select a type K sensor for max31856
++        type_n                  Select a type N sensor for max31856
++        type_r                  Select a type R sensor for max31856
++        type_s                  Select a type S sensor for max31856
++        type_t                  Select a type T sensor for max31856
++
++
++Name:   mbed-dac
++Info:   Configures the mbed AudioCODEC (TLV320AIC23B)
++Load:   dtoverlay=mbed-dac
++Params: <None>
++
++
++Name:   mcp23017
++Info:   Configures the MCP23017 I2C GPIO expander
++Load:   dtoverlay=mcp23017,<param>=<val>
++Params: gpiopin                 Gpio pin connected to the INTA output of the
++                                MCP23017 (default: 4)
++
++        addr                    I2C address of the MCP23017 (default: 0x20)
++
++        mcp23008                Configure an MCP23008 instead.
++        noints                  Disable the interrupt GPIO line.
++
++
++Name:   mcp23s17
++Info:   Configures the MCP23S08/17 SPI GPIO expanders.
++        If devices are present on SPI1 or SPI2, those interfaces must be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++        If interrupts are enabled for a device on a given CS# on a SPI bus, that
++        device must be the only one present on that SPI bus/CS#.
++Load:   dtoverlay=mcp23s17,<param>=<val>
++Params: s08-spi<n>-<m>-present  4-bit integer, bitmap indicating MCP23S08
++                                devices present on SPI<n>, CS#<m>
++
++        s17-spi<n>-<m>-present  8-bit integer, bitmap indicating MCP23S17
++                                devices present on SPI<n>, CS#<m>
++
++        s08-spi<n>-<m>-int-gpio integer, enables interrupts on a single
++                                MCP23S08 device on SPI<n>, CS#<m>, specifies
++                                the GPIO pin to which INT output of MCP23S08
++                                is connected.
++
++        s17-spi<n>-<m>-int-gpio integer, enables mirrored interrupts on a
++                                single MCP23S17 device on SPI<n>, CS#<m>,
++                                specifies the GPIO pin to which either INTA
++                                or INTB output of MCP23S17 is connected.
++
++
++Name:   mcp2515-can0
++Info:   Configures the MCP2515 CAN controller on spi0.0
++Load:   dtoverlay=mcp2515-can0,<param>=<val>
++Params: oscillator              Clock frequency for the CAN controller (Hz)
++
++        spimaxfrequency         Maximum SPI frequence (Hz)
++
++        interrupt               GPIO for interrupt signal
++
++
++Name:   mcp2515-can1
++Info:   Configures the MCP2515 CAN controller on spi0.1
++Load:   dtoverlay=mcp2515-can1,<param>=<val>
++Params: oscillator              Clock frequency for the CAN controller (Hz)
++
++        spimaxfrequency         Maximum SPI frequence (Hz)
++
++        interrupt               GPIO for interrupt signal
++
++
++Name:   mcp251xfd
++Info:   Configures the MCP251XFD CAN controller family
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++Load:   dtoverlay=mcp251xfd,<param>=<val>
++Params: spi<n>-<m>              Configure device at spi<n>, cs<m>
++                                (boolean, required)
++
++        oscillator              Clock frequency for the CAN controller (Hz)
++
++        speed                   Maximum SPI frequence (Hz)
++
++        interrupt               GPIO for interrupt signal
++
++        rx_interrupt            GPIO for RX interrupt signal (nINT1) (optional)
++
++        xceiver_enable          GPIO for CAN transceiver enable (optional)
++
++        xceiver_active_high     specifiy if CAN transceiver enable pin is
++                                active high (optional, default: active low)
++
++
++Name:   mcp3008
++Info:   Configures MCP3008 A/D converters
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++Load:   dtoverlay=mcp3008,<param>[=<val>]
++Params: spi<n>-<m>-present      boolean, configure device at spi<n>, cs<m>
++        spi<n>-<m>-speed        integer, set the spi bus speed for this device
++
++
++Name:   mcp3202
++Info:   Configures MCP3202 A/D converters
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++Load:   dtoverlay=mcp3202,<param>[=<val>]
++Params: spi<n>-<m>-present      boolean, configure device at spi<n>, cs<m>
++        spi<n>-<m>-speed        integer, set the spi bus speed for this device
++
++
++Name:   mcp342x
++Info:   Overlay for activation of Microchip MCP3421-3428 ADCs over I2C
++Load:   dtoverlay=mcp342x,<param>=<val>
++Params: addr                    I2C bus address of device, for devices with
++                                addresses that are configurable, e.g. by
++                                hardware links (default=0x68)
++        mcp3421                 The device is an MCP3421
++        mcp3422                 The device is an MCP3422
++        mcp3423                 The device is an MCP3423
++        mcp3424                 The device is an MCP3424
++        mcp3425                 The device is an MCP3425
++        mcp3426                 The device is an MCP3426
++        mcp3427                 The device is an MCP3427
++        mcp3428                 The device is an MCP3428
++
++
++Name:   media-center
++Info:   Media Center HAT - 2.83" Touch Display + extras by Pi Supply
++Load:   dtoverlay=media-center,<param>=<val>
++Params: speed                   Display SPI bus speed
++        rotate                  Display rotation {0,90,180,270}
++        fps                     Delay between frame updates
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++        swapxy                  Swap x and y axis
++        backlight               Change backlight GPIO pin {e.g. 12, 18}
++        gpio_out_pin            GPIO for output (default "17")
++        gpio_in_pin             GPIO for input (default "18")
++        gpio_in_pull            Pull up/down/off on the input pin
++                                (default "down")
++        sense                   Override the IR receive auto-detection logic:
++                                 "0" = force active-high
++                                 "1" = force active-low
++                                 "-1" = use auto-detection
++                                (default "-1")
++        softcarrier             Turn the software carrier "on" or "off"
++                                (default "on")
++        invert                  "on" = invert the output pin (default "off")
++        debug                   "on" = enable additional debug messages
++                                (default "off")
++
++
++Name:   merus-amp
++Info:   Configures the merus-amp audio card
++Load:   dtoverlay=merus-amp
++Params: <None>
++
++
++Name:   midi-uart0
++Info:   Configures UART0 (ttyAMA0) so that a requested 38.4kbaud actually gets
++        31.25kbaud, the frequency required for MIDI
++Load:   dtoverlay=midi-uart0
++Params: <None>
++
++
++Name:   midi-uart1
++Info:   Configures UART1 (ttyS0) so that a requested 38.4kbaud actually gets
++        31.25kbaud, the frequency required for MIDI
++Load:   dtoverlay=midi-uart1
++Params: <None>
++
++
++Name:   midi-uart2
++Info:   Configures UART2 (ttyAMA1) so that a requested 38.4kbaud actually gets
++        31.25kbaud, the frequency required for MIDI
++Load:   dtoverlay=midi-uart2
++Params: <None>
++
++
++Name:   midi-uart3
++Info:   Configures UART3 (ttyAMA2) so that a requested 38.4kbaud actually gets
++        31.25kbaud, the frequency required for MIDI
++Load:   dtoverlay=midi-uart3
++Params: <None>
++
++
++Name:   midi-uart4
++Info:   Configures UART4 (ttyAMA3) so that a requested 38.4kbaud actually gets
++        31.25kbaud, the frequency required for MIDI
++Load:   dtoverlay=midi-uart4
++Params: <None>
++
++
++Name:   midi-uart5
++Info:   Configures UART5 (ttyAMA4) so that a requested 38.4kbaud actually gets
++        31.25kbaud, the frequency required for MIDI
++Load:   dtoverlay=midi-uart5
++Params: <None>
++
++
++Name:   minipitft13
++Info:   Overlay for AdaFruit Mini Pi 1.3" TFT via SPI using fbtft driver.
++Load:   dtoverlay=minipitft13,<param>=<val>
++Params: speed                   SPI bus speed (default 32000000)
++        rotate                  Display rotation (0, 90, 180 or 270; default 0)
++        width                   Display width (default 240)
++        height                  Display height (default 240)
++        fps                     Delay between frame updates (default 25)
++        debug                   Debug output level (0-7; default 0)
++
++
++Name:   miniuart-bt
++Info:   Switch the onboard Bluetooth function on Pi 3B, 3B+, 3A+, 4B and Zero W
++        to use the mini-UART (ttyS0) and restore UART0/ttyAMA0 over GPIOs 14 &
++        15. Note that this may reduce the maximum usable baudrate.
++        N.B. It is also necessary to edit /lib/systemd/system/hciuart.service
++        and replace ttyAMA0 with ttyS0, unless using Raspbian or another
++        distribution with udev rules that create /dev/serial0 and /dev/serial1,
++        in which case use /dev/serial1 instead because it will always be
++        correct. Furthermore, you must also set core_freq and core_freq_min to
++        the same value in config.txt or the miniuart will not work.
++Load:   dtoverlay=miniuart-bt,<param>=<val>
++Params: krnbt                   Set to "on" to enable autoprobing of Bluetooth
++                                driver without need of hciattach/btattach
++
++
++Name:   mmc
++Info:   Selects the bcm2835-mmc SD/MMC driver, optionally with overclock
++Load:   dtoverlay=mmc,<param>=<val>
++Params: overclock_50            Clock (in MHz) to use when the MMC framework
++                                requests 50MHz
++
++
++Name:   mpu6050
++Info:   Overlay for i2c connected mpu6050 imu
++Load:   dtoverlay=mpu6050,<param>=<val>
++Params: interrupt               GPIO pin for interrupt (default 4)
++        addr                    I2C address of the device (default 0x68)
++
++
++Name:   mz61581
++Info:   MZ61581 display by Tontec
++Load:   dtoverlay=mz61581,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        txbuflen                Transmit buffer length (default 32768)
++
++        debug                   Debug output level {0-7}
++
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++
++
++Name:   ov5647
++Info:   Omnivision OV5647 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=ov5647,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 0)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++
++
++Name:   ov7251
++Info:   Omnivision OV7251 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=ov7251,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 0)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++
++
++Name:   ov9281
++Info:   Omnivision OV9281 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=ov9281,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 0)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++
++
++Name:   papirus
++Info:   PaPiRus ePaper Screen by Pi Supply (both HAT and pHAT)
++Load:   dtoverlay=papirus,<param>=<val>
++Params: panel                   Display panel (required):
++                                1.44": e1144cs021
++                                2.0":  e2200cs021
++                                2.7":  e2271cs021
++
++        speed                   Display SPI bus speed
++
++
++Name:   pca953x
++Info:   TI PCA953x family of I2C GPIO expanders. Default is for NXP PCA9534.
++Load:   dtoverlay=pca953x,<param>=<val>
++Params: addr                    I2C address of expander. Default 0x20.
++        pca6416                 Select the NXP PCA6416 (16 bit)
++        pca9505                 Select the NXP PCA9505 (40 bit)
++        pca9535                 Select the NXP PCA9535 (16 bit)
++        pca9536                 Select the NXP PCA9536 or TI PCA9536 (4 bit)
++        pca9537                 Select the NXP PCA9537 (4 bit)
++        pca9538                 Select the NXP PCA9538 (8 bit)
++        pca9539                 Select the NXP PCA9539 (16 bit)
++        pca9554                 Select the NXP PCA9554 (8 bit)
++        pca9555                 Select the NXP PCA9555 (16 bit)
++        pca9556                 Select the NXP PCA9556 (8 bit)
++        pca9557                 Select the NXP PCA9557 (8 bit)
++        pca9574                 Select the NXP PCA9574 (8 bit)
++        pca9575                 Select the NXP PCA9575 (16 bit)
++        pca9698                 Select the NXP PCA9698 (40 bit)
++        pca16416                Select the NXP PCA16416 (16 bit)
++        pca16524                Select the NXP PCA16524 (24 bit)
++        pca19555a               Select the NXP PCA19555A (16 bit)
++        max7310                 Select the Maxim MAX7310 (8 bit)
++        max7312                 Select the Maxim MAX7312 (16 bit)
++        max7313                 Select the Maxim MAX7313 (16 bit)
++        max7315                 Select the Maxim MAX7315 (8 bit)
++        pca6107                 Select the TI PCA6107 (8 bit)
++        tca6408                 Select the TI TCA6408 (8 bit)
++        tca6416                 Select the TI TCA6416 (16 bit)
++        tca6424                 Select the TI TCA6424 (24 bit)
++        tca9539                 Select the TI TCA9539 (16 bit)
++        tca9554                 Select the TI TCA9554 (8 bit)
++        cat9554                 Select the Onnn CAT9554 (8 bit)
++        pca9654                 Select the Onnn PCA9654 (8 bit)
++        xra1202                 Select the Exar XRA1202 (8 bit)
++
++
++Name:   pcie-32bit-dma
++Info:   Force PCIe config to support 32bit DMA addresses at the expense of
++        having to bounce buffers.
++Load:   dtoverlay=pcie-32bit-dma
++Params: <None>
++
++
++[ The pcf2127-rtc overlay has been deleted. See i2c-rtc. ]
++
++
++[ The pcf8523-rtc overlay has been deleted. See i2c-rtc. ]
++
++
++[ The pcf8563-rtc overlay has been deleted. See i2c-rtc. ]
++
++
++Name:   pi3-act-led
++Info:   This overlay has been renamed act-led, keeping pi3-act-led as an alias
++        for backwards compatibility.
++Load:   <Deprecated>
++
++
++Name:   pi3-disable-bt
++Info:   This overlay has been renamed disable-bt, keeping pi3-disable-bt as an
++        alias for backwards compatibility.
++Load:   <Deprecated>
++
++
++Name:   pi3-disable-wifi
++Info:   This overlay has been renamed disable-wifi, keeping pi3-disable-wifi as
++        an alias for backwards compatibility.
++Load:   <Deprecated>
++
++
++Name:   pi3-miniuart-bt
++Info:   This overlay has been renamed miniuart-bt, keeping pi3-miniuart-bt as
++        an alias for backwards compatibility.
++Load:   <Deprecated>
++
++
++Name:   pibell
++Info:   Configures the pibell audio card.
++Load:   dtoverlay=pibell,<param>=<val>
++Params: alsaname                Set the name as it appears in ALSA (default
++                                "PiBell")
++
++
++Name:   pifacedigital
++Info:   Configures the PiFace Digital mcp23s17 GPIO port expander.
++Load:   dtoverlay=pifacedigital,<param>=<val>
++Params: spi-present-mask        8-bit integer, bitmap indicating MCP23S17 SPI0
++                                CS0 address. PiFace Digital supports addresses
++                                0-3, which can be configured with JP1 and JP2.
++
++
++Name:   pifi-40
++Info:   Configures the PiFi 40W stereo amplifier
++Load:   dtoverlay=pifi-40
++Params: <None>
++
++
++Name:   pifi-dac-hd
++Info:   Configures the PiFi DAC HD
++Load:   dtoverlay=pifi-dac-hd
++Params: <None>
++
++
++Name:   pifi-dac-zero
++Info:   Configures the PiFi DAC Zero
++Load:   dtoverlay=pifi-dac-zero
++Params: <None>
++
++
++Name:   pifi-mini-210
++Info:   Configures the PiFi Mini stereo amplifier
++Load:   dtoverlay=pifi-mini-210
++Params: <None>
++
++
++Name:   piglow
++Info:   Configures the PiGlow by pimoroni.com
++Load:   dtoverlay=piglow
++Params: <None>
++
++
++Name:   piscreen
++Info:   PiScreen display by OzzMaker.com
++Load:   dtoverlay=piscreen,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++
++
++Name:   piscreen2r
++Info:   PiScreen 2 with resistive TP display by OzzMaker.com
++Load:   dtoverlay=piscreen2r,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++
++
++Name:   pisound
++Info:   Configures the Blokas Labs pisound card
++Load:   dtoverlay=pisound
++Params: <None>
++
++
++Name:   pitft22
++Info:   Adafruit PiTFT 2.2" screen
++Load:   dtoverlay=pitft22,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++
++Name:   pitft28-capacitive
++Info:   Adafruit PiTFT 2.8" capacitive touch screen
++Load:   dtoverlay=pitft28-capacitive,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++        touch-sizex             Touchscreen size x (default 240)
++
++        touch-sizey             Touchscreen size y (default 320)
++
++        touch-invx              Touchscreen inverted x axis
++
++        touch-invy              Touchscreen inverted y axis
++
++        touch-swapxy            Touchscreen swapped x y axis
++
++
++Name:   pitft28-resistive
++Info:   Adafruit PiTFT 2.8" resistive touch screen
++Load:   dtoverlay=pitft28-resistive,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++
++Name:   pitft35-resistive
++Info:   Adafruit PiTFT 3.5" resistive touch screen
++Load:   dtoverlay=pitft35-resistive,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++
++Name:   pps-gpio
++Info:   Configures the pps-gpio (pulse-per-second time signal via GPIO).
++Load:   dtoverlay=pps-gpio,<param>=<val>
++Params: gpiopin                 Input GPIO (default "18")
++        assert_falling_edge     When present, assert is indicated by a falling
++                                edge, rather than by a rising edge (default
++                                off)
++        capture_clear           Generate clear events on the trailing edge
++                                (default off)
++
++
++Name:   pwm
++Info:   Configures a single PWM channel
++        Legal pin,function combinations for each channel:
++          PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
++          PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
++        N.B.:
++          1) Pin 18 is the only one available on all platforms, and
++             it is the one used by the I2S audio interface.
++             Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
++          2) The onboard analogue audio output uses both PWM channels.
++          3) So be careful mixing audio and PWM.
++          4) Currently the clock must have been enabled and configured
++             by other means.
++Load:   dtoverlay=pwm,<param>=<val>
++Params: pin                     Output pin (default 18) - see table
++        func                    Pin function (default 2 = Alt5) - see above
++        clock                   PWM clock frequency (informational)
++
++
++Name:   pwm-2chan
++Info:   Configures both PWM channels
++        Legal pin,function combinations for each channel:
++          PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
++          PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
++        N.B.:
++          1) Pin 18 is the only one available on all platforms, and
++             it is the one used by the I2S audio interface.
++             Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
++          2) The onboard analogue audio output uses both PWM channels.
++          3) So be careful mixing audio and PWM.
++          4) Currently the clock must have been enabled and configured
++             by other means.
++Load:   dtoverlay=pwm-2chan,<param>=<val>
++Params: pin                     Output pin (default 18) - see table
++        pin2                    Output pin for other channel (default 19)
++        func                    Pin function (default 2 = Alt5) - see above
++        func2                   Function for pin2 (default 2 = Alt5)
++        clock                   PWM clock frequency (informational)
++
++
++Name:   pwm-ir-tx
++Info:   Use GPIO pin as pwm-assisted infrared transmitter output.
++        This is an alternative to "gpio-ir-tx". pwm-ir-tx makes use
++        of PWM0 to reduce the CPU load during transmission compared to
++        gpio-ir-tx which uses bit-banging.
++        Legal pin,function combinations are:
++          12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1)
++Load:   dtoverlay=pwm-ir-tx,<param>=<val>
++Params: gpio_pin                Output GPIO (default 18)
++
++        func                    Pin function (default 2 = Alt5)
++
++
++Name:   qca7000
++Info:   in-tech's Evaluation Board for PLC Stamp micro
++        This uses spi0 and a separate GPIO interrupt to connect the QCA7000.
++Load:   dtoverlay=qca7000,<param>=<val>
++Params: int_pin                 GPIO pin for interrupt signal (default 23)
++
++        speed                   SPI bus speed (default 12 MHz)
++
++
++Name:   qca7000-uart0
++Info:   in-tech's Evaluation Board for PLC Stamp micro (UART)
++        This uses uart0/ttyAMA0 over GPIOs 14 & 15 to connect the QCA7000.
++        But it requires disabling of onboard Bluetooth on
++        Pi 3B, 3B+, 3A+, 4B and Zero W.
++Load:   dtoverlay=qca7000-uart0,<param>=<val>
++Params: baudrate                Set the baudrate for the UART (default
++                                "115200")
++
++
++Name:   rotary-encoder
++Info:   Overlay for GPIO connected rotary encoder.
++Load:   dtoverlay=rotary-encoder,<param>=<val>
++Params: pin_a                   GPIO connected to rotary encoder channel A
++                                (default 4).
++        pin_b                   GPIO connected to rotary encoder channel B
++                                (default 17).
++        relative_axis           register a relative axis rather than an
++                                absolute one. Relative axis will only
++                                generate +1/-1 events on the input device,
++                                hence no steps need to be passed.
++        linux_axis              the input subsystem axis to map to this
++                                rotary encoder. Defaults to 0 (ABS_X / REL_X)
++        rollover                Automatic rollover when the rotary value
++                                becomes greater than the specified steps or
++                                smaller than 0. For absolute axis only.
++        steps-per-period        Number of steps (stable states) per period.
++                                The values have the following meaning:
++                                1: Full-period mode (default)
++                                2: Half-period mode
++                                4: Quarter-period mode
++        steps                   Number of steps in a full turnaround of the
++                                encoder. Only relevant for absolute axis.
++                                Defaults to 24 which is a typical value for
++                                such devices.
++        wakeup                  Boolean, rotary encoder can wake up the
++                                system.
++        encoding                String, the method used to encode steps.
++                                Supported are "gray" (the default and more
++                                common) and "binary".
++
++
++Name:   rpi-backlight
++Info:   Raspberry Pi official display backlight driver
++Load:   dtoverlay=rpi-backlight
++Params: <None>
++
++
++Name:   rpi-cirrus-wm5102
++Info:   Configures the Cirrus Logic Audio Card
++Load:   dtoverlay=rpi-cirrus-wm5102
++Params: <None>
++
++
++Name:   rpi-dac
++Info:   Configures the RPi DAC audio card
++Load:   dtoverlay=rpi-dac
++Params: <None>
++
++
++Name:   rpi-display
++Info:   RPi-Display - 2.8" Touch Display by Watterott
++Load:   dtoverlay=rpi-display,<param>=<val>
++Params: speed                   Display SPI bus speed
++        rotate                  Display rotation {0,90,180,270}
++        fps                     Delay between frame updates
++        debug                   Debug output level {0-7}
++        xohms                   Touchpanel sensitivity (X-plate resistance)
++        swapxy                  Swap x and y axis
++        backlight               Change backlight GPIO pin {e.g. 12, 18}
++
++
++Name:   rpi-ft5406
++Info:   Official Raspberry Pi display touchscreen
++Load:   dtoverlay=rpi-ft5406,<param>=<val>
++Params: touchscreen-size-x      Touchscreen X resolution (default 800)
++        touchscreen-size-y      Touchscreen Y resolution (default 600);
++        touchscreen-inverted-x  Invert touchscreen X coordinates (default 0);
++        touchscreen-inverted-y  Invert touchscreen Y coordinates (default 0);
++        touchscreen-swapped-x-y Swap X and Y cordinates (default 0);
++
++
++Name:   rpi-poe
++Info:   Raspberry Pi PoE HAT fan
++Load:   dtoverlay=rpi-poe,<param>[=<val>]
++Params: poe_fan_temp0           Temperature (in millicelcius) at which the fan
++                                turns on (default 40000)
++        poe_fan_temp0_hyst      Temperature delta (in millicelcius) at which
++                                the fan turns off (default 2000)
++        poe_fan_temp1           Temperature (in millicelcius) at which the fan
++                                speeds up (default 45000)
++        poe_fan_temp1_hyst      Temperature delta (in millicelcius) at which
++                                the fan slows down (default 2000)
++        poe_fan_temp2           Temperature (in millicelcius) at which the fan
++                                speeds up (default 50000)
++        poe_fan_temp2_hyst      Temperature delta (in millicelcius) at which
++                                the fan slows down (default 2000)
++        poe_fan_temp3           Temperature (in millicelcius) at which the fan
++                                speeds up (default 55000)
++        poe_fan_temp3_hyst      Temperature delta (in millicelcius) at which
++                                the fan slows down (default 5000)
++
++
++Name:   rpi-poe-plus
++Info:   Raspberry Pi PoE+ HAT fan
++Load:   dtoverlay=rpi-poe-plus,<param>[=<val>]
++Params: poe_fan_temp0           Temperature (in millicelcius) at which the fan
++                                turns on (default 40000)
++        poe_fan_temp0_hyst      Temperature delta (in millicelcius) at which
++                                the fan turns off (default 2000)
++        poe_fan_temp1           Temperature (in millicelcius) at which the fan
++                                speeds up (default 45000)
++        poe_fan_temp1_hyst      Temperature delta (in millicelcius) at which
++                                the fan slows down (default 2000)
++        poe_fan_temp2           Temperature (in millicelcius) at which the fan
++                                speeds up (default 50000)
++        poe_fan_temp2_hyst      Temperature delta (in millicelcius) at which
++                                the fan slows down (default 2000)
++        poe_fan_temp3           Temperature (in millicelcius) at which the fan
++                                speeds up (default 55000)
++        poe_fan_temp3_hyst      Temperature delta (in millicelcius) at which
++                                the fan slows down (default 5000)
++
++
++Name:   rpi-proto
++Info:   Configures the RPi Proto audio card
++Load:   dtoverlay=rpi-proto
++Params: <None>
++
++
++Name:   rpi-sense
++Info:   Raspberry Pi Sense HAT
++Load:   dtoverlay=rpi-sense
++Params: <None>
++
++
++Name:   rpi-tv
++Info:   Raspberry Pi TV HAT
++Load:   dtoverlay=rpi-tv
++Params: <None>
++
++
++Name:   rpivid-v4l2
++Info:   Load the V4L2 stateless video decoder driver for the HEVC block,
++        disabling the memory mapped devices in the process.
++Load:   dtoverlay=rpivid-v4l2
++Params: <None>
++
++
++Name:   rra-digidac1-wm8741-audio
++Info:   Configures the Red Rocks Audio DigiDAC1 soundcard
++Load:   dtoverlay=rra-digidac1-wm8741-audio
++Params: <None>
++
++
++Name:   sainsmart18
++Info:   Overlay for the SPI-connected Sainsmart 1.8" display (based on the
++        ST7735R chip).
++Load:   dtoverlay=sainsmart18,<param>=<val>
++Params: rotate                  Display rotation {0,90,180,270}
++        speed                   SPI bus speed in Hz (default 4000000)
++        fps                     Display frame rate in Hz
++        bgr                     Enable BGR mode (default off)
++        debug                   Debug output level {0-7}
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++
++
++Name:   sc16is750-i2c
++Info:   Overlay for the NXP SC16IS750 UART with I2C Interface
++        Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To
++        select another address, please refer to table 10 in reference manual.
++Load:   dtoverlay=sc16is750-i2c,<param>=<val>
++Params: int_pin                 GPIO used for IRQ (default 24)
++        addr                    Address (default 0x48)
++        xtal                    On-board crystal frequency (default 14745600)
++
++
++Name:   sc16is752-i2c
++Info:   Overlay for the NXP SC16IS752 dual UART with I2C Interface
++        Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To
++        select another address, please refer to table 10 in reference manual.
++Load:   dtoverlay=sc16is752-i2c,<param>=<val>
++Params: int_pin                 GPIO used for IRQ (default 24)
++        addr                    Address (default 0x48)
++        xtal                    On-board crystal frequency (default 14745600)
++
++
++Name:   sc16is752-spi0
++Info:   Overlay for the NXP SC16IS752 Dual UART with SPI Interface
++        Enables the chip on SPI0.
++Load:   dtoverlay=sc16is752-spi0,<param>=<val>
++Params: int_pin                 GPIO used for IRQ (default 24)
++        xtal                    On-board crystal frequency (default 14745600)
++
++
++Name:   sc16is752-spi1
++Info:   Overlay for the NXP SC16IS752 Dual UART with SPI Interface
++        Enables the chip on SPI1.
++        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
++              A+, B+, Zero and PI2 B; as well as the Compute Module.
++
++Load:   dtoverlay=sc16is752-spi1,<param>=<val>
++Params: int_pin                 GPIO used for IRQ (default 24)
++        xtal                    On-board crystal frequency (default 14745600)
++
++
++Name:   sdhost
++Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock.
++        N.B. This overlay is designed for situations where the mmc driver is
++        the default, so it disables the other (mmc) interface - this will kill
++        WLAN on a Pi3. If this isn't what you want, either use the sdtweak
++        overlay or the new sd_* dtparams of the base DTBs.
++Load:   dtoverlay=sdhost,<param>=<val>
++Params: overclock_50            Clock (in MHz) to use when the MMC framework
++                                requests 50MHz
++
++        force_pio               Disable DMA support (default off)
++
++        pio_limit               Number of blocks above which to use DMA
++                                (default 1)
++
++        debug                   Enable debug output (default off)
++
++
++Name:   sdio
++Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock,
++        and enables SDIO via GPIOs 22-27. An example of use in 1-bit mode is
++        "dtoverlay=sdio,bus_width=1,gpios_22_25"
++Load:   dtoverlay=sdio,<param>=<val>
++Params: sdio_overclock          SDIO Clock (in MHz) to use when the MMC
++                                framework requests 50MHz
++
++        poll_once               Disable SDIO-device polling every second
++                                (default on: polling once at boot-time)
++
++        bus_width               Set the SDIO host bus width (default 4 bits)
++
++        gpios_22_25             Select GPIOs 22-25 for 1-bit mode. Must be used
++                                with bus_width=1. This replaces the sdio-1bit
++                                overlay, which is now deprecated.
++
++        gpios_34_37             Select GPIOs 34-37 for 1-bit mode. Must be used
++                                with bus_width=1.
++
++        gpios_34_39             Select GPIOs 34-39 for 4-bit mode. Must be used
++                                with bus_width=4 (the default).
++
++
++Name:   sdio-1bit
++Info:   This overlay is now deprecated. Use
++        "dtoverlay=sdio,bus_width=1,gpios_22_25" instead.
++Load:   <Deprecated>
++
++
++Name:   sdtweak
++Info:   This overlay is now deprecated. Use the sd_* dtparams in the
++        base DTB, e.g. "dtoverlay=sdtweak,poll_once" becomes
++        "dtparam=sd_poll_once".
++Load:   <Deprecated>
++
++
++Name:   seeed-can-fd-hat-v1
++Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD
++        channels without RTC. Use this overlay if your HAT has no
++        battery holder.
++        https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html
++Load:   dtoverlay=seeed-can-fd-hat-v1
++Params: <None>
++
++
++Name:   seeed-can-fd-hat-v2
++Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD
++        channels and an RTC. Use this overlay if your HAT has a
++        battery holder.
++        https://www.seeedstudio.com/CAN-BUS-FD-HAT-for-Raspberry-Pi-p-4742.html
++Load:   dtoverlay=seeed-can-fd-hat-v2
++Params: <None>
++
++
++Name:   sh1106-spi
++Info:   Overlay for SH1106 OLED via SPI using fbtft staging driver.
++Load:   dtoverlay=sh1106-spi,<param>=<val>
++Params: speed                   SPI bus speed (default 4000000)
++        rotate                  Display rotation (0, 90, 180 or 270; default 0)
++        fps                     Delay between frame updates (default 25)
++        debug                   Debug output level (0-7; default 0)
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++        height                  Display height (32 or 64; default 64)
++
++
++Name:   si446x-spi0
++Info:   Overlay for Si446x UHF Transceiver via SPI using si446x driver.
++        The driver is currently out-of-tree at
++        https://github.com/sunipkmukherjee/silabs.git
++Load:   dtoverlay=si446x-spi0,<param>=<val>
++Params: speed                   SPI bus speed (default 4000000)
++        int_pin                 GPIO pin for interrupts (default 17)
++        reset_pin               GPIO pin for RESET (default 27)
++
++
++Name:   smi
++Info:   Enables the Secondary Memory Interface peripheral. Uses GPIOs 2-25!
++Load:   dtoverlay=smi
++Params: <None>
++
++
++Name:   smi-dev
++Info:   Enables the userspace interface for the SMI driver
++Load:   dtoverlay=smi-dev
++Params: <None>
++
++
++Name:   smi-nand
++Info:   Enables access to NAND flash via the SMI interface
++Load:   dtoverlay=smi-nand
++Params: <None>
++
++
++Name:   spi-gpio35-39
++Info:   Move SPI function block to GPIO 35 to 39
++Load:   dtoverlay=spi-gpio35-39
++Params: <None>
++
++
++Name:   spi-gpio40-45
++Info:   Move SPI function block to GPIOs 40 to 45
++Load:   dtoverlay=spi-gpio40-45
++Params: <None>
++
++
++Name:   spi-rtc
++Info:   Adds support for a number of SPI Real Time Clock devices
++Load:   dtoverlay=spi-rtc,<param>=<val>
++Params: ds3232                  Select the DS3232 device
++        ds3234                  Select the DS3234 device
++        pcf2123                 Select the PCF2123 device
++
++        spi0_0                  Use spi0.0 (default)
++        spi0_1                  Use spi0.1
++        spi1_0                  Use spi1.0
++        spi1_1                  Use spi1.1
++        spi2_0                  Use spi2.0
++        spi2_1                  Use spi2.1
++        cs_high                 This device requires an active-high CS
++
++
++Name:   spi0-1cs
++Info:   Only use one CS pin for SPI0
++Load:   dtoverlay=spi0-1cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 8)
++        no_miso                 Don't claim and use the MISO pin (9), freeing
++                                it for other uses.
++
++
++Name:   spi0-2cs
++Info:   Change the CS pins for SPI0
++Load:   dtoverlay=spi0-2cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 8)
++        cs1_pin                 GPIO pin for CS1 (default 7)
++        no_miso                 Don't claim and use the MISO pin (9), freeing
++                                it for other uses.
++
++
++Name:   spi0-cs
++Info:   This overlay has been renamed spi0-2cs, keeping spi0-cs as an
++        alias for backwards compatibility.
++Load:   <Deprecated>
++
++
++Name:   spi0-hw-cs
++Info:   This overlay has been deprecated and removed because it is no longer
++        necessary and has been seen to prevent spi0 from working.
++Load:   <Deprecated>
++
++
++Name:   spi1-1cs
++Info:   Enables spi1 with a single chip select (CS) line and associated spidev
++        dev node. The gpio pin number for the CS line and spidev device node
++        creation are configurable.
++        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
++              A+, B+, Zero and PI2 B; as well as the Compute Module.
++Load:   dtoverlay=spi1-1cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI1_CE0).
++        cs0_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev1.0 (default
++                                is 'okay' or enabled).
++
++
++Name:   spi1-2cs
++Info:   Enables spi1 with two chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable.
++        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
++              A+, B+, Zero and PI2 B; as well as the Compute Module.
++Load:   dtoverlay=spi1-2cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI1_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 17 - BCM SPI1_CE1).
++        cs0_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev1.0 (default
++                                is 'okay' or enabled).
++        cs1_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev1.1 (default
++                                is 'okay' or enabled).
++
++
++Name:   spi1-3cs
++Info:   Enables spi1 with three chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable.
++        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
++              A+, B+, Zero and PI2 B; as well as the Compute Module.
++Load:   dtoverlay=spi1-3cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI1_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 17 - BCM SPI1_CE1).
++        cs2_pin                 GPIO pin for CS2 (default 16 - BCM SPI1_CE2).
++        cs0_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev1.0 (default
++                                is 'okay' or enabled).
++        cs1_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev1.1 (default
++                                is 'okay' or enabled).
++        cs2_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev1.2 (default
++                                is 'okay' or enabled).
++
++
++Name:   spi2-1cs
++Info:   Enables spi2 with a single chip select (CS) line and associated spidev
++        dev node. The gpio pin number for the CS line and spidev device node
++        creation are configurable.
++        N.B.: spi2 is only accessible with the Compute Module.
++Load:   dtoverlay=spi2-1cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 43 - BCM SPI2_CE0).
++        cs0_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev2.0 (default
++                                is 'okay' or enabled).
++
++
++Name:   spi2-2cs
++Info:   Enables spi2 with two chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable.
++        N.B.: spi2 is only accessible with the Compute Module.
++Load:   dtoverlay=spi2-2cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 43 - BCM SPI2_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 44 - BCM SPI2_CE1).
++        cs0_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev2.0 (default
++                                is 'okay' or enabled).
++        cs1_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev2.1 (default
++                                is 'okay' or enabled).
++
++
++Name:   spi2-3cs
++Info:   Enables spi2 with three chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable.
++        N.B.: spi2 is only accessible with the Compute Module.
++Load:   dtoverlay=spi2-3cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 43 - BCM SPI2_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 44 - BCM SPI2_CE1).
++        cs2_pin                 GPIO pin for CS2 (default 45 - BCM SPI2_CE2).
++        cs0_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev2.0 (default
++                                is 'okay' or enabled).
++        cs1_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev2.1 (default
++                                is 'okay' or enabled).
++        cs2_spidev              Set to 'disabled' to stop the creation of a
++                                userspace device node /dev/spidev2.2 (default
++                                is 'okay' or enabled).
++
++
++Name:   spi3-1cs
++Info:   Enables spi3 with a single chip select (CS) line and associated spidev
++        dev node. The gpio pin number for the CS line and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi3-1cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 0 - BCM SPI3_CE0).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev3.0 (default
++                                is 'on' or enabled).
++
++
++Name:   spi3-2cs
++Info:   Enables spi3 with two chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi3-2cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 0 - BCM SPI3_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 24 - BCM SPI3_CE1).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev3.0 (default
++                                is 'on' or enabled).
++        cs1_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev3.1 (default
++                                is 'on' or enabled).
++
++
++Name:   spi4-1cs
++Info:   Enables spi4 with a single chip select (CS) line and associated spidev
++        dev node. The gpio pin number for the CS line and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi4-1cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 4 - BCM SPI4_CE0).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev4.0 (default
++                                is 'on' or enabled).
++
++
++Name:   spi4-2cs
++Info:   Enables spi4 with two chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi4-2cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 4 - BCM SPI4_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 25 - BCM SPI4_CE1).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev4.0 (default
++                                is 'on' or enabled).
++        cs1_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev4.1 (default
++                                is 'on' or enabled).
++
++
++Name:   spi5-1cs
++Info:   Enables spi5 with a single chip select (CS) line and associated spidev
++        dev node. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi5-1cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 12 - BCM SPI5_CE0).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev5.0 (default
++                                is 'on' or enabled).
++
++
++Name:   spi5-2cs
++Info:   Enables spi5 with two chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi5-2cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 12 - BCM SPI5_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 26 - BCM SPI5_CE1).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev5.0 (default
++                                is 'on' or enabled).
++        cs1_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev5.1 (default
++                                is 'on' or enabled).
++
++
++Name:   spi6-1cs
++Info:   Enables spi6 with a single chip select (CS) line and associated spidev
++        dev node. The gpio pin number for the CS line and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi6-1cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI6_CE0).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev6.0 (default
++                                is 'on' or enabled).
++
++
++Name:   spi6-2cs
++Info:   Enables spi6 with two chip select (CS) lines and associated spidev
++        dev nodes. The gpio pin numbers for the CS lines and spidev device node
++        creation are configurable. BCM2711 only.
++Load:   dtoverlay=spi6-2cs,<param>=<val>
++Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI6_CE0).
++        cs1_pin                 GPIO pin for CS1 (default 27 - BCM SPI6_CE1).
++        cs0_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev6.0 (default
++                                is 'on' or enabled).
++        cs1_spidev              Set to 'off' to prevent the creation of a
++                                userspace device node /dev/spidev6.1 (default
++                                is 'on' or enabled).
++
++
++Name:   ssd1306
++Info:   Overlay for activation of SSD1306 over I2C OLED display framebuffer.
++Load:   dtoverlay=ssd1306,<param>=<val>
++Params: address                 Location in display memory of first character.
++                                (default=0)
++        width                   Width of display. (default=128)
++        height                  Height of display. (default=64)
++        offset                  virtual channel a. (default=0)
++        normal                  Has no effect on displays tested. (default=not
++                                set)
++        sequential              Set this if every other scan line is missing.
++                                (default=not set)
++        remapped                Set this if display is garbled. (default=not
++                                set)
++        inverted                Set this if display is inverted and mirrored.
++                                (default=not set)
++
++        Examples:
++        Typical usage for 128x64 display: dtoverlay=ssd1306,inverted
++
++        Typical usage for 128x32 display: dtoverlay=ssd1306,inverted,sequential
++
++        i2c_baudrate=400000 will speed up the display.
++
++        i2c_baudrate=1000000 seems to work even though it's not officially
++        supported by the hardware, and is faster still.
++
++        For more information refer to the device datasheet at:
++        https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
++
++
++Name:   ssd1306-spi
++Info:   Overlay for SSD1306 OLED via SPI using fbtft staging driver.
++Load:   dtoverlay=ssd1306-spi,<param>=<val>
++Params: speed                   SPI bus speed (default 10000000)
++        rotate                  Display rotation (0, 90, 180 or 270; default 0)
++        fps                     Delay between frame updates (default 25)
++        debug                   Debug output level (0-7; default 0)
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++        height                  Display height (32 or 64; default 64)
++
++
++Name:   ssd1331-spi
++Info:   Overlay for SSD1331 OLED via SPI using fbtft staging driver.
++Load:   dtoverlay=ssd1331-spi,<param>=<val>
++Params: speed                   SPI bus speed (default 4500000)
++        rotate                  Display rotation (0, 90, 180 or 270; default 0)
++        fps                     Delay between frame updates (default 25)
++        debug                   Debug output level (0-7; default 0)
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++
++
++Name:   ssd1351-spi
++Info:   Overlay for SSD1351 OLED via SPI using fbtft staging driver.
++Load:   dtoverlay=ssd1351-spi,<param>=<val>
++Params: speed                   SPI bus speed (default 4500000)
++        rotate                  Display rotation (0, 90, 180 or 270; default 0)
++        fps                     Delay between frame updates (default 25)
++        debug                   Debug output level (0-7; default 0)
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++
++
++Name:   superaudioboard
++Info:   Configures the SuperAudioBoard sound card
++Load:   dtoverlay=superaudioboard,<param>=<val>
++Params: gpiopin                 GPIO pin for codec reset
++
++
++Name:   sx150x
++Info:   Configures the Semtech SX150X I2C GPIO expanders.
++Load:   dtoverlay=sx150x,<param>=<val>
++Params: sx150<x>-<n>-<m>        Enables SX150X device on I2C#<n> with slave
++                                address <m>. <x> may be 1-9. <n> may be 0 or 1.
++                                Permissible values of <m> (which is denoted in
++                                hex) depend on the device variant. For SX1501,
++                                SX1502, SX1504 and SX1505, <m> may be 20 or 21.
++                                For SX1503 and SX1506, <m> may be 20. For
++                                SX1507 and SX1509, <m> may be 3E, 3F, 70 or 71.
++                                For SX1508, <m> may be 20, 21, 22 or 23.
++
++        sx150<x>-<n>-<m>-int-gpio
++                                Integer, enables interrupts on SX150X device on
++                                I2C#<n> with slave address <m>, specifies
++                                the GPIO pin to which NINT output of SX150X is
++                                connected.
++
++
++Name:   tc358743
++Info:   Toshiba TC358743 HDMI to CSI-2 bridge chip.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=tc358743,<param>=<val>
++Params: 4lane                   Use 4 lanes (only applicable to Compute Modules
++                                CAM1 connector).
++
++        link-frequency          Set the link frequency. Only values of 297000000
++                                (574Mbit/s) and 486000000 (972Mbit/s - default)
++                                are supported by the driver.
++
++
++Name:   tc358743-audio
++Info:   Used in combination with the tc358743-fast overlay to route the audio
++        from the TC358743 over I2S to the Pi.
++        Wiring is LRCK/WFS to GPIO 19, BCK/SCK to GPIO 18, and DATA/SD to GPIO
++        20.
++Load:   dtoverlay=tc358743-audio,<param>=<val>
++Params: card-name               Override the default, "tc358743", card name.
++
++
++Name:   tinylcd35
++Info:   3.5" Color TFT Display by www.tinylcd.com
++        Options: Touch, RTC, keypad
++Load:   dtoverlay=tinylcd35,<param>=<val>
++Params: speed                   Display SPI bus speed
++
++        rotate                  Display rotation {0,90,180,270}
++
++        fps                     Delay between frame updates
++
++        debug                   Debug output level {0-7}
++
++        touch                   Enable touch panel
++
++        touchgpio               Touch controller IRQ GPIO
++
++        xohms                   Touchpanel: Resistance of X-plate in ohms
++
++        rtc-pcf                 PCF8563 Real Time Clock
++
++        rtc-ds                  DS1307 Real Time Clock
++
++        keypad                  Enable keypad
++
++        Examples:
++            Display with touchpanel, PCF8563 RTC and keypad:
++                dtoverlay=tinylcd35,touch,rtc-pcf,keypad
++            Old touch display:
++                dtoverlay=tinylcd35,touch,touchgpio=3
++
++
++Name:   tpm-slb9670
++Info:   Enables support for Infineon SLB9670 Trusted Platform Module add-on
++        boards, which can be used as a secure key storage and hwrng,
++        available as "Iridium SLB9670" by Infineon and "LetsTrust TPM" by pi3g.
++Load:   dtoverlay=tpm-slb9670
++Params: <None>
++
++
++Name:   uart0
++Info:   Change the pin usage of uart0
++Load:   dtoverlay=uart0,<param>=<val>
++Params: txd0_pin                GPIO pin for TXD0 (14, 32 or 36 - default 14)
++
++        rxd0_pin                GPIO pin for RXD0 (15, 33 or 37 - default 15)
++
++        pin_func                Alternative pin function - 4(Alt0) for 14&15,
++                                7(Alt3) for 32&33, 6(Alt2) for 36&37
++
++
++Name:   uart1
++Info:   Change the pin usage of uart1
++Load:   dtoverlay=uart1,<param>=<val>
++Params: txd1_pin                GPIO pin for TXD1 (14, 32 or 40 - default 14)
++
++        rxd1_pin                GPIO pin for RXD1 (15, 33 or 41 - default 15)
++
++
++Name:   uart2
++Info:   Enable uart 2 on GPIOs 0-3. BCM2711 only.
++Load:   dtoverlay=uart2,<param>
++Params: ctsrts                  Enable CTS/RTS on GPIOs 2-3 (default off)
++
++
++Name:   uart3
++Info:   Enable uart 3 on GPIOs 4-7. BCM2711 only.
++Load:   dtoverlay=uart3,<param>
++Params: ctsrts                  Enable CTS/RTS on GPIOs 6-7 (default off)
++
++
++Name:   uart4
++Info:   Enable uart 4 on GPIOs 8-11. BCM2711 only.
++Load:   dtoverlay=uart4,<param>
++Params: ctsrts                  Enable CTS/RTS on GPIOs 10-11 (default off)
++
++
++Name:   uart5
++Info:   Enable uart 5 on GPIOs 12-15. BCM2711 only.
++Load:   dtoverlay=uart5,<param>
++Params: ctsrts                  Enable CTS/RTS on GPIOs 14-15 (default off)
++
++
++Name:   udrc
++Info:   Configures the NW Digital Radio UDRC Hat
++Load:   dtoverlay=udrc,<param>=<val>
++Params: alsaname                Name of the ALSA audio device (default "udrc")
++
++
++Name:   ugreen-dabboard
++Info:   Configures the ugreen-dabboard I2S overlay
++        This is a simple overlay based on the simple-audio-card and the dmic
++        codec. It has the speciality that it is configured to use the codec
++        as a master I2S device. It works for example with the Si468x DAB
++        receiver on the uGreen DABBoard.
++Load:   dtoverlay=ugreen-dabboard,<param>=<val>
++Params: card-name               Override the default, "dabboard", card name.
++
++
++Name:   upstream
++Info:   Allow usage of downstream .dtb with upstream kernel. Comprises the
++        vc4-kms-v3d and dwc2 overlays.
++Load:   dtoverlay=upstream
++Params: <None>
++
++
++Name:   upstream-aux-interrupt
++Info:   This overlay has been deprecated and removed because it is no longer
++        necessary.
++Load:   <Deprecated>
++
++
++Name:   upstream-pi4
++Info:   Allow usage of downstream .dtb with upstream kernel on Pi 4. Comprises
++        the vc4-kms-v3d-pi4 and dwc2 overlays.
++Load:   dtoverlay=upstream-pi4
++Params: <None>
++
++
++Name:   vc4-fkms-v3d
++Info:   Enable Eric Anholt's DRM VC4 V3D driver on top of the dispmanx
++        display stack.
++Load:   dtoverlay=vc4-fkms-v3d,<param>
++Params: cma-512                 CMA is 512MB (needs 1GB)
++        cma-448                 CMA is 448MB (needs 1GB)
++        cma-384                 CMA is 384MB (needs 1GB)
++        cma-320                 CMA is 320MB (needs 1GB)
++        cma-256                 CMA is 256MB (needs 1GB)
++        cma-192                 CMA is 192MB (needs 1GB)
++        cma-128                 CMA is 128MB
++        cma-96                  CMA is 96MB
++        cma-64                  CMA is 64MB
++        cma-size                CMA size in bytes, 4MB aligned
++        cma-default             Use upstream's default value
++
++
++Name:   vc4-fkms-v3d-pi4
++Info:   Enable Eric Anholt's DRM VC4 V3D driver on top of the dispmanx
++        display stack.
++Load:   dtoverlay=vc4-fkms-v3d-pi4,<param>
++Params: cma-512                 CMA is 512MB (needs 1GB)
++        cma-448                 CMA is 448MB (needs 1GB)
++        cma-384                 CMA is 384MB (needs 1GB)
++        cma-320                 CMA is 320MB (needs 1GB)
++        cma-256                 CMA is 256MB (needs 1GB)
++        cma-192                 CMA is 192MB (needs 1GB)
++        cma-128                 CMA is 128MB
++        cma-96                  CMA is 96MB
++        cma-64                  CMA is 64MB
++        cma-size                CMA size in bytes, 4MB aligned
++        cma-default             Use upstream's default value
++
++
++Name:   vc4-kms-dpi-at056tn53v1
++Info:   Enable an Innolux 5.6in VGA TFT connected to DPI interface under KMS.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dpi-at056tn53v1
++Params: <None>
++
++
++Name:   vc4-kms-dsi-7inch
++Info:   Enable the Raspberry Pi DSI 7" screen.
++        Includes the edt-ft5406 for the touchscreen element.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dsi-7inch,<param>=<val>
++Params: sizex                   Touchscreen size x (default 800)
++        sizey                   Touchscreen size y (default 480)
++        invx                    Touchscreen inverted x axis
++        invy                    Touchscreen inverted y axis
++        swapxy                  Touchscreen swapped x y axis
++        disable_touch           Disables the touch screen overlay driver
++
++
++Name:   vc4-kms-dsi-lt070me05000
++Info:   Enable a JDI LT070ME05000 DSI display on DSI1.
++        Note that this is a 4 lane DSI device, so it will only work on a Compute
++        Module.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dsi-lt070me05000,<param>
++Params: reset                   GPIO for the reset signal (default 17)
++        enable                  GPIO for the enable signal (default 4)
++        dcdc-en                 GPIO for the DC-DC converter enable (default 5)
++
++
++Name:   vc4-kms-dsi-lt070me05000-v2
++Info:   Enable a JDI LT070ME05000 DSI display on DSI1 using Harlab's V2
++        interface board.
++        Note that this is a 4 lane DSI device, so it will only work on a Compute
++        Module.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dsi-lt070me05000-v2
++Params: <None>
++
++
++Name:   vc4-kms-kippah-7inch
++Info:   Enable the Adafruit DPI Kippah with the 7" Ontat panel attached.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-kippah-7inch
++Params: <None>
++
++
++Name:   vc4-kms-v3d
++Info:   Enable Eric Anholt's DRM VC4 HDMI/HVS/V3D driver.
++Load:   dtoverlay=vc4-kms-v3d,<param>
++Params: cma-512                 CMA is 512MB (needs 1GB)
++        cma-448                 CMA is 448MB (needs 1GB)
++        cma-384                 CMA is 384MB (needs 1GB)
++        cma-320                 CMA is 320MB (needs 1GB)
++        cma-256                 CMA is 256MB (needs 1GB)
++        cma-192                 CMA is 192MB (needs 1GB)
++        cma-128                 CMA is 128MB
++        cma-96                  CMA is 96MB
++        cma-64                  CMA is 64MB
++        cma-size                CMA size in bytes, 4MB aligned
++        cma-default             Use upstream's default value
++        audio                   Enable or disable audio over HDMI (default "on")
++        noaudio                 Disable all HDMI audio (default "off")
++        nocomposite             Disable the composite video output (default
++                                "off")
++
++
++Name:   vc4-kms-v3d-pi4
++Info:   Enable Eric Anholt's DRM VC4 HDMI/HVS/V3D driver for Pi4.
++Load:   dtoverlay=vc4-kms-v3d-pi4,<param>
++Params: cma-512                 CMA is 512MB
++        cma-448                 CMA is 448MB
++        cma-384                 CMA is 384MB
++        cma-320                 CMA is 320MB
++        cma-256                 CMA is 256MB
++        cma-192                 CMA is 192MB
++        cma-128                 CMA is 128MB
++        cma-96                  CMA is 96MB
++        cma-64                  CMA is 64MB
++        cma-size                CMA size in bytes, 4MB aligned
++        cma-default             Use upstream's default value
++        audio                   Enable or disable audio over HDMI0 (default
++                                "on")
++        audio1                  Enable or disable audio over HDMI1 (default
++                                "on")
++        noaudio                 Disable all HDMI audio (default "off")
++        composite               Enable the composite output (disables all other
++                                outputs)
++
++
++Name:   vc4-kms-vga666
++Info:   Enable the VGA666 (resistor ladder ADC) for the vc4-kms-v3d driver.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-vga666,<param>
++Params: ddc                     Enables GPIOs 0&1 as the I2C to read the EDID
++                                from the display. NB These are NOT 5V tolerant
++                                GPIOs, therefore level shifters are required.
++
++
++Name:   vga666
++Info:   Overlay for the Fen Logic VGA666 board
++        This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds
++        after the kernel has started.
++        NOT for use with vc4-kms-v3d.
++Load:   dtoverlay=vga666
++Params: <None>
++
++
++Name:   w1-gpio
++Info:   Configures the w1-gpio Onewire interface module.
++        Use this overlay if you *don't* need a GPIO to drive an external pullup.
++Load:   dtoverlay=w1-gpio,<param>=<val>
++Params: gpiopin                 GPIO for I/O (default "4")
++        pullup                  Now enabled by default (ignored)
++
++
++Name:   w1-gpio-pullup
++Info:   Configures the w1-gpio Onewire interface module.
++        Use this overlay if you *do* need a GPIO to drive an external pullup.
++Load:   dtoverlay=w1-gpio-pullup,<param>=<val>
++Params: gpiopin                 GPIO for I/O (default "4")
++        extpullup               GPIO for external pullup (default "5")
++        pullup                  Now enabled by default (ignored)
++
++
++Name:   w5500
++Info:   Overlay for the Wiznet W5500 Ethernet Controller on SPI0
++Load:   dtoverlay=w5500,<param>=<val>
++Params: int_pin                 GPIO used for INT (default 25)
++
++        speed                   SPI bus speed (default 30000000)
++
++        cs                      SPI bus Chip Select (default 0)
++
++
++Name:   wittypi
++Info:   Configures the wittypi RTC module.
++Load:   dtoverlay=wittypi,<param>=<val>
++Params: led_gpio                GPIO for LED (default "17")
++        led_trigger             Choose which activity the LED tracks (default
++                                "default-on")
++
++
++Name:   wm8960-soundcard
++Info:   Overlay for the Waveshare wm8960 soundcard
++Load:   dtoverlay=wm8960-soundcard,<param>=<val>
++Params: alsaname                Changes the card name in ALSA
++        compatible              Changes the codec compatibility
++
++
++Troubleshooting
++===============
++
++If you are experiencing problems that you think are DT-related, enable DT
++diagnostic output by adding this to /boot/config.txt:
++
++    dtdebug=on
++
++and rebooting. Then run:
++
++    sudo vcdbg log msg
++
++and look for relevant messages.
++
++Further reading
++===============
++
++This is only meant to be a quick introduction to the subject of Device Tree on
++Raspberry Pi. There is a more complete explanation here:
++
++http://www.raspberrypi.org/documentation/configuration/device-tree.md
+diff --git a/arch/arm/boot/dts/overlays/act-led-overlay.dts b/arch/arm/boot/dts/overlays/act-led-overlay.dts
+new file mode 100644
+index 000000000000..2f4bbb407f89
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/act-led-overlay.dts
+@@ -0,0 +1,27 @@
++/dts-v1/;
++/plugin/;
++
++/* Pi3 uses a GPIO expander to drive the LEDs which can only be accessed
++   from the VPU. There is a special driver for this with a separate DT node,
++   which has the unfortunate consequence of breaking the act_led_gpio and
++   act_led_activelow dtparams.
++
++   This overlay changes the GPIO controller back to the standard one and
++   restores the dtparams.
++*/
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&act_led>;
++		frag0: __overlay__ {
++			gpios = <&gpio 0 0>;
++		};
++	};
++
++	__overrides__ {
++		gpio = <&frag0>,"gpios:4";
++		activelow = <&frag0>,"gpios:8";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/adafruit18-overlay.dts b/arch/arm/boot/dts/overlays/adafruit18-overlay.dts
+new file mode 100644
+index 000000000000..e1ce94a8cd3e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adafruit18-overlay.dts
+@@ -0,0 +1,55 @@
++/*
++ * Device Tree overlay for Adafruit 1.8" TFT LCD with ST7735R chip 160x128
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			af18: adafruit18@0 {
++				compatible = "fbtft,adafruit18";
++				reg = <0>;
++				pinctrl-names = "default";
++				spi-max-frequency = <40000000>;
++				rotate = <90>;
++				buswidth = <8>;
++				fps = <50>;
++				height = <160>;
++				width = <128>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				led-gpios = <&gpio 18 0>;
++				debug = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		green = <&af18>, "compatible=fbtft,adafruit18_green";
++		speed     = <&af18>,"spi-max-frequency:0";
++		rotate    = <&af18>,"rotate:0";
++		fps       = <&af18>,"fps:0";
++		bgr       = <&af18>,"bgr?";
++		debug     = <&af18>,"debug:0";
++		dc_pin    = <&af18>,"dc-gpios:4";
++		reset_pin = <&af18>,"reset-gpios:4";
++		led_pin   = <&af18>,"led-gpios:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts b/arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts
+new file mode 100644
+index 000000000000..298488e19156
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts
+@@ -0,0 +1,40 @@
++// Definitions for ADAU1977 ADC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++    
++	fragment@0 {
++        	target = <&i2c>;
++        	
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++			
++			adau1977: codec@11 {
++                        	compatible = "adi,adau1977";
++                        	reg = <0x11>;
++                        	reset-gpios = <&gpio 5 0>;
++				AVDD-supply = <&vdd_3v3_reg>;
++                	};
++        	};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "adi,adau1977-adc";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/adau7002-simple-overlay.dts b/arch/arm/boot/dts/overlays/adau7002-simple-overlay.dts
+new file mode 100644
+index 000000000000..5fed769d2526
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adau7002-simple-overlay.dts
+@@ -0,0 +1,52 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++
++    fragment@0 {
++        target = <&i2s>;
++        __overlay__ {
++            status = "okay";
++        };
++    };
++
++    fragment@1 {
++        target-path = "/";
++        __overlay__ {
++                adau7002_codec: adau7002-codec {
++                #sound-dai-cells = <0>;
++                compatible = "adi,adau7002";
++/*                IOVDD-supply = <&supply>;*/
++                status = "okay";
++            };
++        };
++    };
++
++    fragment@2 {
++        target = <&sound>;
++            sound_overlay: __overlay__ {
++            compatible = "simple-audio-card";
++            simple-audio-card,format = "i2s";
++            simple-audio-card,name = "adau7002";
++            simple-audio-card,bitclock-slave = <&dailink0_slave>;
++            simple-audio-card,frame-slave = <&dailink0_slave>;
++            simple-audio-card,widgets =
++                    "Microphone", "Microphone Jack";
++            simple-audio-card,routing =
++                    "PDM_DAT", "Microphone Jack";
++            status = "okay";
++            simple-audio-card,cpu {
++                sound-dai = <&i2s>;
++            };
++            dailink0_slave: simple-audio-card,codec {
++                sound-dai = <&adau7002_codec>;
++            };
++        };
++    };
++
++
++    __overrides__ {
++        card-name = <&sound_overlay>,"simple-audio-card,name";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/ads1015-overlay.dts b/arch/arm/boot/dts/overlays/ads1015-overlay.dts
+new file mode 100644
+index 000000000000..dc1764613a8b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ads1015-overlay.dts
+@@ -0,0 +1,98 @@
++/*
++ * 2016 - Erik Sejr
++ */
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++    /* ----------- ADS1015 ------------ */
++    fragment@0 {
++        target = <&i2c_arm>;
++        __overlay__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            status = "okay";
++            ads1015: ads1015@48 {
++                compatible = "ti,ads1015";
++                status = "okay";
++                #address-cells = <1>;
++                #size-cells = <0>;
++                reg = <0x48>;
++            };
++        };
++    };
++
++    fragment@1 {
++        target = <&ads1015>;
++        __overlay__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            channel_a: channel_a {
++                reg = <4>;
++                ti,gain = <2>;
++                ti,datarate = <4>;
++            };
++        };
++    };
++
++    fragment@2 {
++        target = <&ads1015>;
++        __dormant__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            channel_b: channel_b {
++                reg = <5>;
++                ti,gain = <2>;
++                ti,datarate = <4>;
++            };
++        };
++    };
++
++    fragment@3 {
++        target = <&ads1015>;
++        __dormant__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            channel_c: channel_c {
++                reg = <6>;
++                ti,gain = <2>;
++                ti,datarate = <4>;
++            };
++        };
++    };
++
++    fragment@4 {
++        target = <&ads1015>;
++        __dormant__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            channel_d: channel_d {
++                reg = <7>;
++                ti,gain = <2>;
++                ti,datarate = <4>;
++            };
++        };
++    };
++
++    __overrides__ {
++        addr =            <&ads1015>,"reg:0";
++        cha_enable =      <0>,"=1";
++        cha_cfg =         <&channel_a>,"reg:0";
++        cha_gain =        <&channel_a>,"ti,gain:0";
++        cha_datarate =    <&channel_a>,"ti,datarate:0";
++        chb_enable =      <0>,"=2";
++        chb_cfg =         <&channel_b>,"reg:0";
++        chb_gain =        <&channel_b>,"ti,gain:0";
++        chb_datarate =    <&channel_b>,"ti,datarate:0";
++        chc_enable =      <0>,"=3";
++        chc_cfg =         <&channel_c>,"reg:0";
++        chc_gain =        <&channel_c>,"ti,gain:0";
++        chc_datarate =    <&channel_c>,"ti,datarate:0";
++        chd_enable =      <0>,"=4";
++        chd_cfg =         <&channel_d>,"reg:0";
++        chd_gain =        <&channel_d>,"ti,gain:0";
++        chd_datarate =    <&channel_d>,"ti,datarate:0";
++   };
++
++};
+diff --git a/arch/arm/boot/dts/overlays/ads1115-overlay.dts b/arch/arm/boot/dts/overlays/ads1115-overlay.dts
+new file mode 100644
+index 000000000000..e44ced704ee2
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ads1115-overlay.dts
+@@ -0,0 +1,103 @@
++/*
++ * TI ADS1115 multi-channel ADC overlay
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ads1115: ads1115@48 {
++				compatible = "ti,ads1115";
++				status = "okay";
++				#address-cells = <1>;
++				#size-cells = <0>;
++				reg = <0x48>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&ads1115>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			channel_a: channel_a {
++				reg = <4>;
++				ti,gain = <1>;
++				ti,datarate = <7>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&ads1115>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			channel_b: channel_b {
++				reg = <5>;
++				ti,gain = <1>;
++				ti,datarate = <7>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&ads1115>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			channel_c: channel_c {
++				reg = <6>;
++				ti,gain = <1>;
++				ti,datarate = <7>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&ads1115>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			channel_d: channel_d {
++				reg = <7>;
++				ti,gain = <1>;
++				ti,datarate = <7>;
++			};
++		};
++	};
++
++	__overrides__ {
++		addr =            <&ads1115>,"reg:0";
++		cha_enable =      <0>,"=1";
++		cha_cfg =         <&channel_a>,"reg:0";
++		cha_gain =        <&channel_a>,"ti,gain:0";
++		cha_datarate =    <&channel_a>,"ti,datarate:0";
++		chb_enable =      <0>,"=2";
++		chb_cfg =         <&channel_b>,"reg:0";
++		chb_gain =        <&channel_b>,"ti,gain:0";
++		chb_datarate =    <&channel_b>,"ti,datarate:0";
++		chc_enable =      <0>,"=3";
++		chc_cfg =         <&channel_c>,"reg:0";
++		chc_gain =        <&channel_c>,"ti,gain:0";
++		chc_datarate =    <&channel_c>,"ti,datarate:0";
++		chd_enable =      <0>,"=4";
++		chd_cfg =         <&channel_d>,"reg:0";
++		chd_gain =        <&channel_d>,"ti,gain:0";
++		chd_datarate =    <&channel_d>,"ti,datarate:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ads7846-overlay.dts b/arch/arm/boot/dts/overlays/ads7846-overlay.dts
+new file mode 100644
+index 000000000000..1c5c9b6bb6ff
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ads7846-overlay.dts
+@@ -0,0 +1,89 @@
++/*
++ * Generic Device Tree overlay for the ADS7846 touch controller
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			ads7846_pins: ads7846_pins {
++				brcm,pins = <255>; /* illegal default value */
++				brcm,function = <0>; /* in */
++				brcm,pull = <0>; /* none */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ads7846: ads7846@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&ads7846_pins>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <255 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 255 0>;
++
++				/* driver defaults */
++				ti,x-min = /bits/ 16 <0>;
++				ti,y-min = /bits/ 16 <0>;
++				ti,x-max = /bits/ 16 <0x0FFF>;
++				ti,y-max = /bits/ 16 <0x0FFF>;
++				ti,pressure-min = /bits/ 16 <0>;
++				ti,pressure-max = /bits/ 16 <0xFFFF>;
++				ti,x-plate-ohms = /bits/ 16 <400>;
++			};
++		};
++	};
++	__overrides__ {
++		cs =     <&ads7846>,"reg:0";
++		speed =  <&ads7846>,"spi-max-frequency:0";
++		penirq = <&ads7846_pins>,"brcm,pins:0", /* REQUIRED */
++			 <&ads7846>,"interrupts:0",
++			 <&ads7846>,"pendown-gpio:4";
++		penirq_pull = <&ads7846_pins>,"brcm,pull:0";
++		swapxy = <&ads7846>,"ti,swap-xy?";
++		xmin =   <&ads7846>,"ti,x-min;0";
++		ymin =   <&ads7846>,"ti,y-min;0";
++		xmax =   <&ads7846>,"ti,x-max;0";
++		ymax =   <&ads7846>,"ti,y-max;0";
++		pmin =   <&ads7846>,"ti,pressure-min;0";
++		pmax =   <&ads7846>,"ti,pressure-max;0";
++		xohms =  <&ads7846>,"ti,x-plate-ohms;0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/adv7282m-overlay.dts b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
+new file mode 100644
+index 000000000000..5d85dfd0595c
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
+@@ -0,0 +1,65 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for Analog Devices ADV7282-M video to CSI2 bridge on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			adv728x: adv728x@21 {
++				compatible = "adi,adv7282-m";
++				reg = <0x21>;
++				status = "okay";
++				clock-frequency = <24000000>;
++				port {
++					adv728x_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1>;
++						link-frequencies =
++							/bits/ 64 <297000000>;
++
++						mclk-frequency = <12000000>;
++					};
++				};
++			};
++		};
++	};
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&adv728x_0>;
++					data-lanes = <1>;
++				};
++			};
++		};
++	};
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		addr =			<&adv728x>,"reg:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/adv728x-m-overlay.dts b/arch/arm/boot/dts/overlays/adv728x-m-overlay.dts
+new file mode 100644
+index 000000000000..ea392e886984
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adv728x-m-overlay.dts
+@@ -0,0 +1,37 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for Analog Devices ADV728[0|1|2]-M video to CSI2 bridges on VC
++// I2C bus
++
++#include "adv7282m-overlay.dts"
++
++/{
++	compatible = "brcm,bcm2835";
++
++	// Fragment numbers deliberately high to avoid conflicts with the
++	// included adv7282m overlay file.
++
++	fragment@101 {
++		target = <&adv728x>;
++		__dormant__ {
++			compatible = "adi,adv7280-m";
++		};
++	};
++	fragment@102 {
++		target = <&adv728x>;
++		__dormant__ {
++			compatible = "adi,adv7281-m";
++		};
++	};
++	fragment@103 {
++		target = <&adv728x>;
++		__dormant__ {
++			compatible = "adi,adv7281-ma";
++		};
++	};
++
++	__overrides__ {
++		adv7280m = <0>, "+101";
++		adv7281m = <0>, "+102";
++		adv7281ma = <0>, "+103";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts b/arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
+new file mode 100644
+index 000000000000..82f9b3734fb1
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
+@@ -0,0 +1,49 @@
++// Definitions for Digital Dreamtime Akkordion using IQaudIO DAC+ or DACZero
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4c>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		frag2: __overlay__ {
++			compatible = "iqaudio,iqaudio-dac";
++			card_name = "Akkordion";
++			dai_name = "IQaudIO DAC";
++			dai_stream_name = "IQaudIO DAC HiFi";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain = <&frag2>,"iqaudio,24db_digital_gain?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/allo-boss-dac-pcm512x-audio-overlay.dts b/arch/arm/boot/dts/overlays/allo-boss-dac-pcm512x-audio-overlay.dts
+new file mode 100644
+index 000000000000..873cb2fab52b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/allo-boss-dac-pcm512x-audio-overlay.dts
+@@ -0,0 +1,59 @@
++/*
++ * Definitions for Allo Boss DAC board
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			boss_osc: boss_osc {
++				compatible = "allo,dac-clk";
++				#clock-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				clocks = <&boss_osc>;
++				reg = <0x4d>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		boss_dac: __overlay__ {
++			compatible = "allo,boss-dac";
++			i2s-controller = <&i2s>;
++			mute-gpios = <&gpio 6 1>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain = <&boss_dac>,"allo,24db_digital_gain?";
++		slave = <&boss_dac>,"allo,slave?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/allo-boss2-dac-audio-overlay.dts b/arch/arm/boot/dts/overlays/allo-boss2-dac-audio-overlay.dts
+new file mode 100644
+index 000000000000..a6adfb495eb9
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/allo-boss2-dac-audio-overlay.dts
+@@ -0,0 +1,57 @@
++/* * Definitions for Allo Boss2 DAC boards
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			#sound-dai-cells = <0>;
++			status = "okay";
++			cpu_port: port {
++				cpu_endpoint: endpoint {
++					remote-endpoint = <&codec_endpoint>;
++					bitclock-master = <&codec_endpoint>;
++					frame-master = <&codec_endpoint>;
++					dai-format = "i2s";
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++			allo-cs43130@30 {
++				#sound-dai-cells = <0>;
++				compatible = "allo,allo-cs43198";
++				clock44-gpio = <&gpio 5 0>;
++				clock48-gpio = <&gpio 6 0>;
++				reg = <0x30>;
++				port {
++					codec_endpoint: endpoint {
++					remote-endpoint = <&cpu_endpoint>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		boss2_dac: __overlay__ {
++			compatible = "audio-graph-card";
++			label = "Allo Boss2";
++			dais = <&cpu_port>;
++			status = "okay";
++		};
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/allo-digione-overlay.dts b/arch/arm/boot/dts/overlays/allo-digione-overlay.dts
+new file mode 100644
+index 000000000000..ea018ace34d4
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/allo-digione-overlay.dts
+@@ -0,0 +1,44 @@
++// Definitions for Allo DigiOne
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8804@3b {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				PVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++				wlf,reset-gpio = <&gpio 17 0>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "allo,allo-digione";
++			i2s-controller = <&i2s>;
++			status = "okay";
++			clock44-gpio = <&gpio 5 0>;
++			clock48-gpio = <&gpio 6 0>;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts b/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
+new file mode 100644
+index 000000000000..b25fd681f09f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
+@@ -0,0 +1,57 @@
++/*
++ * Definitions for Allo Katana DAC boards
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			#sound-dai-cells = <0>;
++			status = "okay";
++			cpu_port: port {
++				cpu_endpoint: endpoint {
++					remote-endpoint = <&codec_endpoint>;
++					bitclock-master = <&codec_endpoint>;
++					frame-master = <&codec_endpoint>;
++					dai-format = "i2s";
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			allo-katana-codec@30 {
++				#sound-dai-cells = <0>;
++				compatible = "allo,allo-katana-codec";
++				reg = <0x30>;
++				port {
++					codec_endpoint: endpoint {
++					remote-endpoint = <&cpu_endpoint>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		katana_dac: __overlay__ {
++			compatible = "audio-graph-card";
++			label = "Allo Katana";
++			dais = <&cpu_port>;
++			status = "okay";
++		};
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/allo-piano-dac-pcm512x-audio-overlay.dts b/arch/arm/boot/dts/overlays/allo-piano-dac-pcm512x-audio-overlay.dts
+new file mode 100644
+index 000000000000..bfc66da6295a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/allo-piano-dac-pcm512x-audio-overlay.dts
+@@ -0,0 +1,54 @@
++/*
++ * Definitions for Allo Piano DAC (2.0/2.1) boards
++ *
++ * NB. The Piano DAC 2.1 board contains 2x TI PCM5142 DAC's. One DAC is stereo
++ * (left/right) and the other provides a subwoofer output, using DSP on the
++ * chip for digital high/low pass crossover.
++ * The initial support for this hardware, that doesn't require any codec driver
++ * modifications, uses only one DAC chip for stereo (left/right) output, the
++ * chip with 0x4c slave address. The other chip at 0x4d is currently ignored!
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5142@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5142";
++				reg = <0x4c>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		piano_dac: __overlay__ {
++			compatible = "allo,piano-dac";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain =
++			<&piano_dac>,"allo,24db_digital_gain?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/allo-piano-dac-plus-pcm512x-audio-overlay.dts b/arch/arm/boot/dts/overlays/allo-piano-dac-plus-pcm512x-audio-overlay.dts
+new file mode 100644
+index 000000000000..d47a35def4f7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/allo-piano-dac-plus-pcm512x-audio-overlay.dts
+@@ -0,0 +1,57 @@
++// Definitions for Piano DAC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			allo_pcm5122_4c: pcm5122@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4c>;
++				sound-name-prefix = "Main";
++				status = "okay";
++			};
++			allo_pcm5122_4d: pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				sound-name-prefix = "Sub";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		piano_dac: __overlay__ {
++			compatible = "allo,piano-dac-plus";
++			audio-codec = <&allo_pcm5122_4c &allo_pcm5122_4d>;
++			i2s-controller = <&i2s>;
++			mute1-gpios = <&gpio 6 1>;
++			mute2-gpios = <&gpio 25 1>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain =
++			<&piano_dac>,"allo,24db_digital_gain?";
++		glb_mclk =
++			<&piano_dac>,"allo,glb_mclk?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/anyspi-overlay.dts b/arch/arm/boot/dts/overlays/anyspi-overlay.dts
+new file mode 100755
+index 000000000000..87523dcca318
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/anyspi-overlay.dts
+@@ -0,0 +1,205 @@
++/*
++ * Universal device tree overlay for SPI devices
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@8 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_00: anyspi@0 {
++				reg = <0>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@9 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_01: anyspi@1 {
++				reg = <1>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@10 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_10: anyspi@0 {
++				reg = <0>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@11 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_11: anyspi@1 {
++				reg = <1>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@12 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_12: anyspi@2 {
++				reg = <2>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@13 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_20: anyspi@0 {
++				reg = <0>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@14 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_21: anyspi@1 {
++				reg = <1>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@15 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			anyspi_22: anyspi@2 {
++				reg = <2>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	__overrides__ {
++		spi0-0 = <0>, "+0+8";
++		spi0-1 = <0>, "+1+9";
++		spi1-0 = <0>, "+2+10";
++		spi1-1 = <0>, "+3+11";
++		spi1-2 = <0>, "+4+12";
++		spi2-0 = <0>, "+5+13";
++		spi2-1 = <0>, "+6+14";
++		spi2-2 = <0>, "+7+15";
++		dev = <&anyspi_00>,"compatible",
++		      <&anyspi_01>,"compatible",
++		      <&anyspi_10>,"compatible",
++		      <&anyspi_11>,"compatible",
++		      <&anyspi_12>,"compatible",
++		      <&anyspi_20>,"compatible",
++		      <&anyspi_21>,"compatible",
++		      <&anyspi_22>,"compatible";
++		speed = <&anyspi_00>, "spi-max-frequency:0",
++		        <&anyspi_01>, "spi-max-frequency:0",
++		        <&anyspi_10>, "spi-max-frequency:0",
++		        <&anyspi_11>, "spi-max-frequency:0",
++		        <&anyspi_12>, "spi-max-frequency:0",
++		        <&anyspi_20>, "spi-max-frequency:0",
++		        <&anyspi_21>, "spi-max-frequency:0",
++		        <&anyspi_22>, "spi-max-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/apds9960-overlay.dts b/arch/arm/boot/dts/overlays/apds9960-overlay.dts
+new file mode 100644
+index 000000000000..c216932278ab
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/apds9960-overlay.dts
+@@ -0,0 +1,57 @@
++// Definitions for APDS-9960 ambient light and gesture sensor
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c1>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			apds9960_pins: apds9960_pins@39 {
++				brcm,pins = <4>;
++				brcm,function = <0>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			apds9960: apds@39 {
++				compatible = "avago,apds9960";
++				reg = <0x39>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c1>;
++		__overlay__ {
++			apds9960_irq: apds@39 {
++				#interrupt-cells=<2>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 1>;
++			};
++		};
++	};
++
++	__overrides__ {
++		gpiopin = <&apds9960_pins>,"brcm,pins:0",
++				<&apds9960_irq>,"interrupts:0";
++		noints = <0>,"!1!3";
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/applepi-dac-overlay.dts b/arch/arm/boot/dts/overlays/applepi-dac-overlay.dts
+new file mode 100644
+index 000000000000..4769296ec9d6
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/applepi-dac-overlay.dts
+@@ -0,0 +1,57 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++
++    fragment@0 {
++        target = <&sound>;
++        __overlay__ {
++            compatible = "simple-audio-card";
++            simple-audio-card,name = "ApplePi-DAC";
++
++            status = "okay";
++
++            playback_link: simple-audio-card,dai-link@1 {
++                format = "i2s";
++
++                p_cpu_dai: cpu {
++                    sound-dai = <&i2s>;
++                    dai-tdm-slot-num = <2>;
++                    dai-tdm-slot-width = <32>;
++                };
++
++                p_codec_dai: codec {
++                    sound-dai = <&codec_out>;
++                };
++            };
++        };
++    };
++
++    fragment@1 {
++        target-path = "/";
++        __overlay__ {
++            codec_out: pcm1794a-codec {
++                #sound-dai-cells = <0>;
++                compatible = "ti,pcm1794a";
++                status = "okay";
++            };
++        };
++    };
++
++    fragment@2 {
++        target = <&i2s>;
++        __overlay__ {
++            #sound-dai-cells = <0>;
++            status = "okay";
++        };
++    };
++};
++
++/*
++   Written by: Leonid Ayzenshtat
++   Company: Orchard Audio (www.orchardaudio.com)
++
++   compile with:
++   dtc -@ -H epapr -O dtb -o ApplePi-DAC.dtbo -W no-unit_address_vs_reg ApplePi-DAC.dts
++*/
+diff --git a/arch/arm/boot/dts/overlays/at86rf233-overlay.dts b/arch/arm/boot/dts/overlays/at86rf233-overlay.dts
+new file mode 100644
+index 000000000000..5a3f4571ee78
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/at86rf233-overlay.dts
+@@ -0,0 +1,57 @@
++/dts-v1/;
++/plugin/;
++
++/* Overlay for Atmel AT86RF233 IEEE 802.15.4 WPAN transceiver on spi0.0 */
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			lowpan0: at86rf233@0 {
++				compatible = "atmel,at86rf233";
++				reg = <0>;
++				interrupt-parent = <&gpio>;
++				interrupts = <23 4>; /* active high */
++				reset-gpio = <&gpio 24 1>;
++				sleep-gpio = <&gpio 25 1>;
++				spi-max-frequency = <3000000>;
++				xtal-trim = /bits/ 8 <0xf>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			lowpan0_pins: lowpan0_pins {
++				brcm,pins = <23 24 25>;
++				brcm,function = <0 1 1>; /* in out out */
++			};
++		};
++	};
++
++	__overrides__ {
++		interrupt = <&lowpan0>, "interrupts:0",
++			<&lowpan0_pins>, "brcm,pins:0";
++		reset     = <&lowpan0>, "reset-gpio:4",
++			<&lowpan0_pins>, "brcm,pins:4";
++		sleep     = <&lowpan0>, "sleep-gpio:4",
++			<&lowpan0_pins>, "brcm,pins:8";
++		speed     = <&lowpan0>, "spi-max-frequency:0";
++		trim      = <&lowpan0>, "xtal-trim.0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts b/arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts
+new file mode 100644
+index 000000000000..57a66eac8e9b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts
+@@ -0,0 +1,60 @@
++// Definitions for audioinjector.net audio add on soundcard
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			cs42448_mclk: codec-mclk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <49152000>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			cs42448: cs42448@48 {
++				#sound-dai-cells = <0>;
++				compatible = "cirrus,cs42448";
++				reg = <0x48>;
++				clocks = <&cs42448_mclk>;
++				clock-names = "mclk";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		snd: __overlay__ {
++			compatible = "ai,audioinjector-octo-soundcard";
++			mult-gpios = <&gpio 27 0>, <&gpio 22 0>, <&gpio 23 0>,
++				     <&gpio 24 0>;
++			reset-gpios = <&gpio 5 0>;
++			i2s-controller = <&i2s>;
++			codec = <&cs42448>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		non-stop-clocks = <&snd>, "non-stop-clocks?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/audioinjector-isolated-soundcard-overlay.dts b/arch/arm/boot/dts/overlays/audioinjector-isolated-soundcard-overlay.dts
+new file mode 100644
+index 000000000000..63e05cf9665d
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/audioinjector-isolated-soundcard-overlay.dts
+@@ -0,0 +1,55 @@
++// Definitions for audioinjector.net audio isolated soundcard
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			cs4272_mclk: codec-mclk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24576000>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			cs4272: cs4271@10 {
++				#sound-dai-cells = <0>;
++				compatible = "cirrus,cs4271";
++				reg = <0x10>;
++				reset-gpio = <&gpio 5 0>;
++				clocks = <&cs4272_mclk>;
++				clock-names = "mclk";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		snd: __overlay__ {
++			compatible = "ai,audioinjector-isolated-soundcard";
++			mute-gpios = <&gpio 17 0>;
++			i2s-controller = <&i2s>;
++			codec = <&cs4272>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/audioinjector-ultra-overlay.dts b/arch/arm/boot/dts/overlays/audioinjector-ultra-overlay.dts
+new file mode 100644
+index 000000000000..fb4a4678a17a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/audioinjector-ultra-overlay.dts
+@@ -0,0 +1,71 @@
++// Definitions for audioinjector.net audio add on soundcard
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			cs4265: cs4265@4e {
++				#sound-dai-cells = <0>;
++				compatible = "cirrus,cs4265";
++				reg = <0x4e>;
++				reset-gpios = <&gpio 5 0>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "simple-audio-card";
++			i2s-controller = <&i2s>;
++			status = "okay";
++
++			simple-audio-card,name = "audioinjector-ultra";
++
++			simple-audio-card,widgets =
++				"Line", "OUTPUTS",
++				"Line", "INPUTS";
++
++			simple-audio-card,routing =
++				"OUTPUTS","LINEOUTL",
++				"OUTPUTS","LINEOUTR",
++				"OUTPUTS","SPDIFOUT",
++				"LINEINL","INPUTS",
++				"LINEINR","INPUTS",
++				"MICL","INPUTS",
++				"MICR","INPUTS";
++
++			simple-audio-card,format = "i2s";
++
++			simple-audio-card,bitclock-master = <&sound_master>;
++			simple-audio-card,frame-master = <&sound_master>;
++
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++				dai-tdm-slot-num = <2>;
++				dai-tdm-slot-width = <32>;
++			};
++
++			sound_master: simple-audio-card,codec {
++				sound-dai = <&cs4265>;
++				system-clock-frequency = <12288000>;
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/audioinjector-wm8731-audio-overlay.dts b/arch/arm/boot/dts/overlays/audioinjector-wm8731-audio-overlay.dts
+new file mode 100644
+index 000000000000..68f4427d86c3
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/audioinjector-wm8731-audio-overlay.dts
+@@ -0,0 +1,39 @@
++// Definitions for audioinjector.net audio add on soundcard
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8731@1a {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8731";
++				reg = <0x1a>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "ai,audioinjector-pi-soundcard";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts b/arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts
+new file mode 100644
+index 000000000000..81af26374d92
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/audiosense-pi-overlay.dts
+@@ -0,0 +1,82 @@
++// Definitions for audiosense add on soundcard
++/dts-v1/;
++/plugin/;
++#include <dt-bindings/pinctrl/bcm2835.h>
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			codec_reg_1v8: codec-reg-1v8 {
++				compatible = "regulator-fixed";
++				regulator-name = "tlv320aic3204_1v8";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++				regulator-always-on;
++			};
++
++			/* audio external oscillator */
++			codec_osc: codec_osc {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <12000000>;	/* 12 MHz */
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			codec_rst: codec-rst {
++				brcm,pins = <26>;
++				brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			codec: tlv320aic32x4@18 {
++				#sound-dai-cells = <0>;
++				compatible = "ti,tlv320aic32x4";
++				reg = <0x18>;
++
++				clocks = <&codec_osc>;
++				clock-names = "mclk";
++
++				iov-supply = <&vdd_3v3_reg>;
++				ldoin-supply = <&vdd_3v3_reg>;
++
++				gpio-controller;
++				#gpio-cells = <2>;
++				reset-gpios = <&gpio 26 GPIO_ACTIVE_HIGH>;
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "as,audiosense-pi";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/audremap-overlay.dts b/arch/arm/boot/dts/overlays/audremap-overlay.dts
+new file mode 100644
+index 000000000000..7324890ead86
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/audremap-overlay.dts
+@@ -0,0 +1,42 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target = <&audio_pins>;
++                frag0: __overlay__ {
++                };
++        };
++
++	fragment@1 {
++                target = <&audio_pins>;
++                __overlay__ {
++                        brcm,pins = < 12 13 >;
++                        brcm,function = < 4 >; /* alt0 alt0 */
++                };
++        };
++
++	fragment@2 {
++		target = <&audio_pins>;
++		__dormant__ {
++                        brcm,pins = < 18 19 >;
++                        brcm,function = < 2 >; /* alt5 alt5 */
++		};
++	};
++
++	fragment@3 {
++		target = <&audio>;
++		__overlay__  {
++			brcm,disable-headphones = <0>;
++		};
++	};
++
++	__overrides__ {
++		swap_lr = <&frag0>, "swap_lr?";
++		enable_jack = <&frag0>, "enable_jack?";
++		pins_12_13 = <0>,"+1-2";
++		pins_18_19 = <0>,"-1+2";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/balena-fin-overlay.dts b/arch/arm/boot/dts/overlays/balena-fin-overlay.dts
+new file mode 100644
+index 000000000000..e7ead7cdf5f5
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/balena-fin-overlay.dts
+@@ -0,0 +1,125 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&mmcnr>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&sdio_pins>;
++			bus-width = <4>;
++			brcm,overclock-50 = <35>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			sdio_pins: sdio_pins {
++				brcm,pins = <34 35 36 37 38 39>;
++				brcm,function = <7>; /* ALT3 = SD1 */
++				brcm,pull = <0 2 2 2 2 2>;
++			};
++
++			power_ctrl_pins: power_ctrl_pins {
++				brcm,pins = <40>;
++				brcm,function = <1>; // out
++			};
++		};
++	};
++
++	fragment@2 {
++		target-path = "/";
++		__overlay__ {
++			// We should switch to mmc-pwrseq-sd8787 after making it
++			// compatible with sd8887
++			// Currently that module requires two GPIOs to function since it
++			// targets a slightly different chip
++			power_ctrl: power_ctrl {
++				compatible = "gpio-poweroff";
++				gpios = <&gpio 40 1>;
++				force;
++				pinctrl-names = "default";
++				pinctrl-0 = <&power_ctrl_pins>;
++			};
++
++			i2c_soft: i2c@0 {
++				compatible = "i2c-gpio";
++				gpios = <&gpio 43 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* sda */
++				         &gpio 42 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* scl */>;
++				i2c-gpio,delay-us = <5>;
++				i2c-gpio,scl-open-drain;
++				i2c-gpio,sda-open-drain;
++				#address-cells = <1>;
++				#size-cells = <0>;
++			};
++
++			sd8xxx-wlan {
++				drvdbg = <0x6>;
++				drv_mode = <0x1>;
++				cfg80211_wext = <0xf>;
++				sta_name = "wlan";
++				wfd_name = "p2p";
++				cal_data_cfg = "none";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c_soft>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			gpio_expander: gpio_expander@20 {
++				compatible = "nxp,pca9554";
++				gpio-controller;
++				#gpio-cells = <2>;
++				reg = <0x20>;
++				status = "okay";
++			};
++
++			// rtc clock
++			ds1307: ds1307@68 {
++				compatible = "dallas,ds1307";
++				reg = <0x68>;
++				status = "okay";
++			};
++
++			// RGB LEDs (>= v1.1.0)
++			pca9633: pca9633@62 {
++				compatible = "nxp,pca9633";
++				reg = <0x62>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++
++				red@0 {
++					label = "red";
++					reg = <0>;
++					linux,default-trigger = "none";
++				};
++				green@1 {
++					label = "green";
++					reg = <1>;
++					linux,default-trigger = "none";
++				};
++				blue@2 {
++					label = "blue";
++					reg = <2>;
++					linux,default-trigger = "none";
++				};
++				unused@3 {
++					label = "unused";
++					reg = <3>;
++					linux,default-trigger = "none";
++				};
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/cap1106-overlay.dts b/arch/arm/boot/dts/overlays/cap1106-overlay.dts
+new file mode 100644
+index 000000000000..0a585e725f84
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/cap1106-overlay.dts
+@@ -0,0 +1,52 @@
++// Overlay for cap1106 from  Microchip Semiconductor
++// add CONFIG_KEYBOARD_CAP11XX=y
++
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++        fragment@0 {
++                target = <&i2c1>;
++                __overlay__{
++                        status = "okay";
++                        cap1106: cap1106@28 {
++                                compatible = "microchip,cap1106";
++                                pinctrl-0 = <&cap1106_pins>;
++                                pinctrl-names = "default";
++                                interrupt-parent = <&gpio>;
++                                interrupts = <4 2>;
++                                reg = <0x28>;
++                                autorepeat;
++                                microchip,sensor-gain = <2>;
++
++                                linux,keycodes = <2>,           /* KEY_1 */
++                                                <3>,            /* KEY_2 */
++                                                <4>,            /* KEY_3 */
++                                                <5>,            /* KEY_4 */
++                                                <6>,            /* KEY_5 */
++                                                <7>;            /* KEY_6 */
++
++                                #address-cells = <1>;
++                                #size-cells = <0>;
++                                status = "okay";
++
++                        };
++                };
++        };
++        fragment@1 {
++                target = <&gpio>;
++                __overlay__ {
++                        cap1106_pins: cap1106_pins {
++                                brcm,pins = <4>;
++                                brcm,function = <0>; /* in */
++                                brcm,pull = <0>; /* none */
++                        };
++                };
++        };
++
++        __overrides__ {
++                int_pin = <&cap1106>, "interrupts:0",
++                          <&cap1106_pins>, "brcm,pins:0";
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/chipdip-dac-overlay.dts b/arch/arm/boot/dts/overlays/chipdip-dac-overlay.dts
+new file mode 100644
+index 000000000000..09c7417b4707
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/chipdip-dac-overlay.dts
+@@ -0,0 +1,46 @@
++/*
++ * Device Tree overlay for ChipDip DAC
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			spdif-transmitter {
++				#address-cells = <0>;
++				#size-cells = <0>;
++				#sound-dai-cells = <0>;
++				compatible = "linux,spdif-dit";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "chipdip,chipdip-dac";
++			i2s-controller = <&i2s>;
++			sr0-gpios = <&gpio 5 0>;
++			sr1-gpios = <&gpio 6 0>;
++			sr2-gpios = <&gpio 12 0>;
++			res0-gpios = <&gpio 24 0>;
++			res1-gpios = <&gpio 27 0>;
++			mute-gpios = <&gpio 4 0>;
++			sdwn-gpios = <&gpio 13 0>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/cma-overlay.dts b/arch/arm/boot/dts/overlays/cma-overlay.dts
+new file mode 100644
+index 000000000000..1d87c599f909
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/cma-overlay.dts
+@@ -0,0 +1,36 @@
++/*
++ * cma.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&cma>;
++		frag0: __overlay__ {
++			/*
++			 * The default size when using this overlay is 256 MB
++			 * and should be kept as is for backwards
++			 * compatibility.
++			 */
++			size = <0x10000000>;
++		};
++	};
++
++	__overrides__ {
++		cma-512 = <&frag0>,"size:0=",<0x20000000>;
++		cma-448 = <&frag0>,"size:0=",<0x1c000000>;
++		cma-384 = <&frag0>,"size:0=",<0x18000000>;
++		cma-320 = <&frag0>,"size:0=",<0x14000000>;
++		cma-256 = <&frag0>,"size:0=",<0x10000000>;
++		cma-192 = <&frag0>,"size:0=",<0xC000000>;
++		cma-128 = <&frag0>,"size:0=",<0x8000000>;
++		cma-96  = <&frag0>,"size:0=",<0x6000000>;
++		cma-64  = <&frag0>,"size:0=",<0x4000000>;
++		cma-size = <&frag0>,"size:0"; /* in bytes, 4MB aligned */
++		cma-default = <0>,"-0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/dht11-overlay.dts b/arch/arm/boot/dts/overlays/dht11-overlay.dts
+new file mode 100644
+index 000000000000..6feeeb402493
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dht11-overlay.dts
+@@ -0,0 +1,41 @@
++/*
++ * Overlay for the DHT11/21/22 humidity/temperature sensor modules.
++ */
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++
++			dht11: dht11@0 {
++				compatible = "dht11";
++				pinctrl-names = "default";
++				pinctrl-0 = <&dht11_pins>;
++				gpios = <&gpio 4 0>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			dht11_pins: dht11_pins@0 {
++				brcm,pins = <4>;
++				brcm,function = <0>; // in
++				brcm,pull = <0>; // off
++			};
++		};
++	};
++
++	__overrides__ {
++		gpiopin = <&dht11_pins>,"brcm,pins:0",
++			<&dht11_pins>, "reg:0",
++			<&dht11>,"gpios:4",
++			<&dht11>,"reg:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts b/arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts
+new file mode 100644
+index 000000000000..d863e5c167cc
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts
+@@ -0,0 +1,39 @@
++// Definitions for Dion Audio LOCO DAC-AMP
++
++/*
++ * PCM5242 DAC (in hardware mode) and TPA3118 AMP.
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			pcm5102a-codec {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5102a";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "dionaudio,loco-pcm5242-tpa3118";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/dionaudio-loco-v2-overlay.dts b/arch/arm/boot/dts/overlays/dionaudio-loco-v2-overlay.dts
+new file mode 100644
+index 000000000000..dfb8922a654b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dionaudio-loco-v2-overlay.dts
+@@ -0,0 +1,49 @@
++/*
++ * Definitions for Dion Audio LOCO-V2 DAC-AMP
++ *  eg. dtoverlay=dionaudio-loco-v2
++ *
++ * PCM5242 DAC (in software mode) and TPA3255 AMP.
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&sound>;
++		frag0: __overlay__ {
++			compatible = "dionaudio,dionaudio-loco-v2";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain = <&frag0>,"dionaudio,24db_digital_gain?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/disable-bt-overlay.dts b/arch/arm/boot/dts/overlays/disable-bt-overlay.dts
+new file mode 100644
+index 000000000000..d5a66e5d76a9
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/disable-bt-overlay.dts
+@@ -0,0 +1,64 @@
++/dts-v1/;
++/plugin/;
++
++/* Disable Bluetooth and restore UART0/ttyAMA0 over GPIOs 14 & 15.
++   To disable the systemd service that initialises the modem so it doesn't use
++   the UART:
++
++       sudo systemctl disable hciuart
++*/
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&uart1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&uart0>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart0_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&bt>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&uart0_pins>;
++		__overlay__ {
++			brcm,pins;
++			brcm,function;
++			brcm,pull;
++		};
++	};
++
++	fragment@4 {
++		target = <&bt_pins>;
++		__overlay__ {
++			brcm,pins;
++			brcm,function;
++			brcm,pull;
++		};
++	};
++
++	fragment@5 {
++		target-path = "/aliases";
++		__overlay__ {
++			serial0 = "/soc/serial@7e201000";
++			serial1 = "/soc/serial@7e215040";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/disable-wifi-overlay.dts b/arch/arm/boot/dts/overlays/disable-wifi-overlay.dts
+new file mode 100644
+index 000000000000..75e046463900
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/disable-wifi-overlay.dts
+@@ -0,0 +1,20 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&mmc>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&mmcnr>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/dpi18-overlay.dts b/arch/arm/boot/dts/overlays/dpi18-overlay.dts
+new file mode 100644
+index 000000000000..4abe5be744db
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dpi18-overlay.dts
+@@ -0,0 +1,39 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	// There is no DPI driver module, but we need a platform device
++	// node (that doesn't already use pinctrl) to hang the pinctrl
++	// reference on - leds will do
++
++	fragment@0 {
++		target = <&fb>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi18_pins>;
++		};
++	};
++
++	fragment@1 {
++		target = <&vc4>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi18_pins>;
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			dpi18_pins: dpi18_pins {
++				brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
++					     12 13 14 15 16 17 18 19 20
++					     21>;
++				brcm,function = <6>; /* alt2 */
++				brcm,pull = <0>; /* no pull */
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/dpi18cpadhi-overlay.dts b/arch/arm/boot/dts/overlays/dpi18cpadhi-overlay.dts
+new file mode 100644
+index 000000000000..50c88a1ed299
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dpi18cpadhi-overlay.dts
+@@ -0,0 +1,26 @@
++/*
++ * dpi18cpadhi-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&fb>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
++		};
++	};
++
++	fragment@1 {
++		target = <&vc4>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/dpi24-overlay.dts b/arch/arm/boot/dts/overlays/dpi24-overlay.dts
+new file mode 100644
+index 000000000000..44335cc81277
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dpi24-overlay.dts
+@@ -0,0 +1,39 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	// There is no DPI driver module, but we need a platform device
++	// node (that doesn't already use pinctrl) to hang the pinctrl
++	// reference on - leds will do
++
++	fragment@0 {
++		target = <&fb>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi24_pins>;
++		};
++	};
++
++	fragment@1 {
++		target = <&vc4>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi24_pins>;
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			dpi24_pins: dpi24_pins {
++				brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
++					     12 13 14 15 16 17 18 19 20
++					     21 22 23 24 25 26 27>;
++				brcm,function = <6>; /* alt2 */
++				brcm,pull = <0>; /* no pull */
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/draws-overlay.dts b/arch/arm/boot/dts/overlays/draws-overlay.dts
+new file mode 100644
+index 000000000000..d18187d7f343
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/draws-overlay.dts
+@@ -0,0 +1,208 @@
++#include <dt-bindings/clock/bcm2835.h>
++/*
++ * Device tree overlay for the DRAWS Hardware
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++    fragment@0 {
++        target = <&i2s>;
++        __overlay__ {
++            status = "okay";
++        };
++    };
++
++    fragment@1 {
++        target-path = "/";
++        __overlay__ {
++            regulators {
++                compatible = "simple-bus";
++                #address-cells = <1>;
++                #size-cells = <0>;
++
++                udrc0_ldoin: udrc0_ldoin {
++                    compatible = "regulator-fixed";
++                    regulator-name = "ldoin";
++                    regulator-min-microvolt = <3300000>;
++                    regulator-max-microvolt = <3300000>;
++                    regulator-always-on;
++                };
++
++                sc16is752_clk: sc16is752_draws_clk {
++                    compatible = "fixed-clock";
++                    #clock-cells = <0>;
++                    clock-frequency = <1843200>;
++                };
++            };
++
++            pps: pps {
++                compatible = "pps-gpio";
++                pinctrl-names = "default";
++                pinctrl-0 = <&pps_pins>;
++                gpios = <&gpio 7 0>;
++                status = "okay";
++            };
++
++            iio-hwmon {
++                compatible = "iio-hwmon";
++                status = "okay";
++                io-channels = <&tla2024 4>, <&tla2024 5>, <&tla2024 6>,
++                              <&tla2024 7>;
++            };
++        };
++    };
++
++    fragment@2 {
++        target = <&i2c_arm>;
++        __overlay__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            status = "okay";
++
++            tlv320aic32x4: tlv320aic32x4@18 {
++                compatible = "ti,tlv320aic32x4";
++                reg = <0x18>;
++                #sound-dai-cells = <0>;
++                status = "okay";
++
++                clocks = <&clocks BCM2835_CLOCK_GP0>;
++                clock-names = "mclk";
++                assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
++                assigned-clock-rates = <25000000>;
++
++                pinctrl-names = "default";
++                pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
++
++                reset-gpios = <&gpio 13 0>;
++
++                iov-supply = <&udrc0_ldoin>;
++                ldoin-supply = <&udrc0_ldoin>;
++            };
++
++            sc16is752: sc16is752@50 {
++                compatible = "nxp,sc16is752";
++                reg = <0x50>;
++                clocks = <&sc16is752_clk>;
++                interrupt-parent = <&gpio>;
++                interrupts = <17 2>; /* IRQ_TYPE_EDGE_FALLING */
++
++                pinctrl-names = "default";
++                pinctrl-0 = <&sc16is752_irq>;
++            };
++
++            tla2024: tla2024@48 {
++                compatible = "ti,ads1015";
++                reg = <0x48>;
++                #address-cells = <1>;
++                #size-cells = <0>;
++                #io-channel-cells = <1>;
++
++                adc_ch4: channel@4 {
++                    reg = <4>;
++                    ti,gain = <1>;
++                    ti,datarate = <4>;
++                };
++
++                adc_ch5: channel@5 {
++                    reg = <5>;
++                    ti,gain = <1>;
++                    ti,datarate = <4>;
++                };
++
++                adc_ch6: channel@6 {
++                    reg = <6>;
++                    ti,gain = <2>;
++                    ti,datarate = <4>;
++                };
++
++                adc_ch7: channel@7 {
++                    reg = <7>;
++                    ti,gain = <2>;
++                    ti,datarate = <4>;
++                };
++            };
++        };
++    };
++
++    fragment@3 {
++        target = <&sound>;
++        snd: __overlay__ {
++            compatible = "simple-audio-card";
++            i2s-controller = <&i2s>;
++            status = "okay";
++
++            simple-audio-card,name = "draws";
++            simple-audio-card,format = "i2s";
++
++            simple-audio-card,bitclock-master = <&dailink0_master>;
++            simple-audio-card,frame-master = <&dailink0_master>;
++
++            simple-audio-card,widgets =
++                "Line", "Line In",
++                "Line", "Line Out";
++
++            simple-audio-card,routing =
++                "IN1_R", "Line In",
++                "IN1_L", "Line In",
++                "CM_L", "Line In",
++                "CM_R", "Line In",
++                "Line Out", "LOR",
++                "Line Out", "LOL";
++
++            dailink0_master: simple-audio-card,cpu {
++                sound-dai = <&i2s>;
++            };
++
++            simple-audio-card,codec {
++                sound-dai = <&tlv320aic32x4>;
++            };
++        };
++    };
++
++    fragment@4 {
++        target = <&gpio>;
++        __overlay__ {
++            gpclk0_pin: gpclk0_pin {
++                brcm,pins = <4>;
++                brcm,function = <4>;
++            };
++
++            aic3204_reset: aic3204_reset {
++                brcm,pins = <13>;
++                brcm,function = <1>;
++                brcm,pull = <1>;
++            };
++
++            aic3204_gpio: aic3204_gpio {
++                brcm,pins = <26>;
++            };
++
++            sc16is752_irq: sc16is752_irq {
++                brcm,pins = <17>;
++                brcm,function = <0>;
++                brcm,pull = <2>;
++            };
++
++            pps_pins: pps_pins {
++                brcm,pins = <7>;
++                brcm,function = <0>;
++                brcm,pull = <0>;
++            };
++        };
++    };
++
++    __overrides__ {
++        draws_adc_ch4_gain = <&adc_ch4>,"ti,gain:0";
++        draws_adc_ch4_datarate = <&adc_ch4>,"ti,datarate:0";
++        draws_adc_ch5_gain = <&adc_ch5>,"ti,gain:0";
++        draws_adc_ch5_datarate = <&adc_ch5>,"ti,datarate:0";
++        draws_adc_ch6_gain = <&adc_ch6>,"ti,gain:0";
++        draws_adc_ch6_datarate = <&adc_ch6>,"ti,datarate:0";
++        draws_adc_ch7_gain = <&adc_ch7>,"ti,gain:0";
++        draws_adc_ch7_datarate = <&adc_ch7>,"ti,datarate:0";
++        alsaname = <&snd>, "simple-audio-card,name";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/dwc-otg-overlay.dts b/arch/arm/boot/dts/overlays/dwc-otg-overlay.dts
+new file mode 100644
+index 000000000000..78c5e9f85048
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dwc-otg-overlay.dts
+@@ -0,0 +1,14 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&usb>;
++		__overlay__ {
++			compatible = "brcm,bcm2708-usb";
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/dwc2-overlay.dts b/arch/arm/boot/dts/overlays/dwc2-overlay.dts
+new file mode 100644
+index 000000000000..0d83e344ad97
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/dwc2-overlay.dts
+@@ -0,0 +1,26 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&usb>;
++		#address-cells = <1>;
++		#size-cells = <1>;
++		dwc2_usb: __overlay__ {
++			compatible = "brcm,bcm2835-usb";
++			dr_mode = "otg";
++			g-np-tx-fifo-size = <32>;
++			g-rx-fifo-size = <558>;
++			g-tx-fifo-size = <512 512 512 512 512 256 256>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		dr_mode = <&dwc2_usb>, "dr_mode";
++		g-np-tx-fifo-size = <&dwc2_usb>,"g-np-tx-fifo-size:0";
++		g-rx-fifo-size = <&dwc2_usb>,"g-rx-fifo-size:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/edt-ft5406-overlay.dts b/arch/arm/boot/dts/overlays/edt-ft5406-overlay.dts
+new file mode 100644
+index 000000000000..f82b4d0e5047
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/edt-ft5406-overlay.dts
+@@ -0,0 +1,10 @@
++/*
++ * Device Tree overlay for EDT 5406 touchscreen controller, as used on the
++ * Raspberry Pi 7" panel
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "edt-ft5406.dtsi"
+diff --git a/arch/arm/boot/dts/overlays/edt-ft5406.dtsi b/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
+new file mode 100644
+index 000000000000..0473ff17f19f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
+@@ -0,0 +1,55 @@
++/*
++ * Device Tree overlay for an EDT FT5406 touchscreen
++ *
++ * Note that this is included from vc4-kms-dsi-7inch, hence the
++ * fragment numbers not starting at 0.
++ */
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@10 {
++		target = <&ft5406>;
++		__overlay__ {
++			touchscreen-inverted-x;
++		};
++	};
++
++	fragment@11 {
++		target = <&ft5406>;
++		__overlay__ {
++			touchscreen-inverted-y;
++		};
++	};
++
++	fragment@12 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++			ft5406: ts@38 {
++				compatible = "edt,edt-ft5406";
++				reg = <0x38>;
++
++				touchscreen-size-x = < 800 >;
++				touchscreen-size-y = < 480 >;
++			};
++		};
++	};
++
++	fragment@13 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		sizex = <&ft5406>,"touchscreen-size-x:0";
++		sizey = <&ft5406>,"touchscreen-size-y:0";
++		invx = <0>, "-10";
++		invy = <0>, "-11";
++		swapxy = <&ft5406>,"touchscreen-swapped-x-y?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/enc28j60-overlay.dts b/arch/arm/boot/dts/overlays/enc28j60-overlay.dts
+new file mode 100644
+index 000000000000..7af5c2e607ea
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/enc28j60-overlay.dts
+@@ -0,0 +1,53 @@
++// Overlay for the Microchip ENC28J60 Ethernet Controller
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			eth1: enc28j60@0{
++				compatible = "microchip,enc28j60";
++				reg = <0>; /* CE0 */
++				pinctrl-names = "default";
++				pinctrl-0 = <&eth1_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 0x2>; /* falling edge */
++				spi-max-frequency = <12000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			eth1_pins: eth1_pins {
++				brcm,pins = <25>;
++				brcm,function = <0>; /* in */
++				brcm,pull = <0>; /* none */
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&eth1>, "interrupts:0",
++		          <&eth1_pins>, "brcm,pins:0";
++		speed   = <&eth1>, "spi-max-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts b/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
+new file mode 100644
+index 000000000000..17cb5b8fa485
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
+@@ -0,0 +1,47 @@
++// Overlay for the Microchip ENC28J60 Ethernet Controller - SPI2 Compute Module
++// Interrupt pin: 39
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi2>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			eth1: enc28j60@0{
++				compatible = "microchip,enc28j60";
++				reg = <0>; /* CE0 */
++				pinctrl-names = "default";
++				pinctrl-0 = <&eth1_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <39 0x2>; /* falling edge */
++				spi-max-frequency = <12000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			eth1_pins: eth1_pins {
++				brcm,pins = <39>;
++				brcm,function = <0>; /* in */
++				brcm,pull = <0>; /* none */
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&eth1>, "interrupts:0",
++		          <&eth1_pins>, "brcm,pins:0";
++		speed   = <&eth1>, "spi-max-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/exc3000-overlay.dts b/arch/arm/boot/dts/overlays/exc3000-overlay.dts
+new file mode 100644
+index 000000000000..6f087fb20661
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/exc3000-overlay.dts
+@@ -0,0 +1,48 @@
++// Device tree overlay for I2C connected EETI EXC3000 multiple touch controller
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			exc3000_pins: exc3000_pins {
++				brcm,pins = <4>; // interrupt
++				brcm,function = <0>; // in
++				brcm,pull = <2>; // pull-up
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			exc3000: exc3000@2a {
++				compatible = "eeti,exc3000";
++				reg = <0x2a>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&exc3000_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 8>; // active low level-sensitive
++				touchscreen-size-x = <4096>;
++				touchscreen-size-y = <4096>;
++			};
++		};
++	};
++
++	__overrides__ {
++		interrupt = <&exc3000_pins>,"brcm,pins:0",
++			<&exc3000>,"interrupts:0";
++		sizex = <&exc3000>,"touchscreen-size-x:0";
++		sizey = <&exc3000>,"touchscreen-size-y:0";
++		invx = <&exc3000>,"touchscreen-inverted-x?";
++		invy = <&exc3000>,"touchscreen-inverted-y?";
++		swapxy = <&exc3000>,"touchscreen-swapped-x-y?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts b/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
+new file mode 100644
+index 000000000000..743f14ae5768
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
+@@ -0,0 +1,70 @@
++// Definitions for Fe-Pi Audio
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			sgtl5000_mclk: sgtl5000_mclk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <12288000>;
++				clock-output-names = "sgtl5000-mclk";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&soc>;
++		__overlay__ {
++			reg_1v8: reg_1v8@0 {
++				compatible = "regulator-fixed";
++				regulator-name = "1V8";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++				regulator-always-on;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sgtl5000@0a {
++				#sound-dai-cells = <0>;
++				compatible = "fsl,sgtl5000";
++				reg = <0x0a>;
++				clocks = <&sgtl5000_mclk>;
++				micbias-resistor-k-ohms = <2>;
++				micbias-voltage-m-volts = <3000>;
++				VDDA-supply = <&vdd_3v3_reg>;
++				VDDIO-supply = <&vdd_3v3_reg>;
++				VDDD-supply = <&reg_1v8>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "fe-pi,fe-pi-audio";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/fsm-demo-overlay.dts b/arch/arm/boot/dts/overlays/fsm-demo-overlay.dts
+new file mode 100644
+index 000000000000..e9944f5cd258
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/fsm-demo-overlay.dts
+@@ -0,0 +1,104 @@
++// Demo overlay for the gpio-fsm driver
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio-fsm.h>
++
++#define BUTTON1 GF_IP(0)
++#define BUTTON2 GF_SW(0)
++#define RED   GF_OP(0) // GPIO7
++#define AMBER GF_OP(1) // GPIO8
++#define GREEN GF_OP(2) // GPIO25
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			fsm_demo: fsm-demo {
++				compatible = "rpi,gpio-fsm";
++
++				debug = <0>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				num-swgpios = <1>;
++				gpio-line-names = "button2";
++				input-gpios  = <&gpio 6 1>;  // BUTTON1 (active-low)
++				output-gpios = <&gpio 7 0>,  // RED
++					       <&gpio 8 0>,  // AMBER
++					       <&gpio 25 0>; // GREEN
++				shutdown-timeout-ms = <2000>;
++
++				start {
++					start_state;
++					set = <RED 1>, <AMBER 0>, <GREEN 0>;
++					start2 = <GF_DELAY 250>;
++				};
++
++				start2 {
++					set = <RED 0>, <AMBER 1>;
++					go = <GF_DELAY 250>;
++				};
++
++				go {
++					set = <RED 0>, <AMBER 0>, <GREEN 1>;
++					ready_wait = <BUTTON1 0>;
++					shutdown1 = <GF_SHUTDOWN 0>;
++				};
++
++				ready_wait {
++					// Clear the soft GPIO
++					set = <BUTTON2 0>;
++					ready = <GF_DELAY 1000>;
++					shutdown1 = <GF_SHUTDOWN 0>;
++				};
++
++				ready {
++					stopping = <BUTTON1 1>, <BUTTON2 1>;
++					shutdown1 = <GF_SHUTDOWN 0>;
++				};
++
++				stopping {
++					set = <GREEN 0>, <AMBER 1>;
++					stopped = <GF_DELAY 1000>;
++				};
++
++				stopped {
++					set = <AMBER 0>, <RED 1>;
++					get_set = <GF_DELAY 3000>;
++					shutdown1 = <GF_SHUTDOWN 0>;
++				};
++
++				get_set {
++					set = <AMBER 1>;
++					go = <GF_DELAY 1000>;
++				};
++
++				shutdown1 {
++					set = <RED 0>, <AMBER 0>, <GREEN 1>;
++					shutdown2 = <GF_SHUTDOWN 250>;
++				};
++
++				shutdown2 {
++					set = <AMBER 1>, <GREEN 0>;
++					shutdown3 = <GF_SHUTDOWN 250>;
++				};
++
++				shutdown3 {
++					set = <RED 1>, <AMBER 0>;
++					shutdown4 = <GF_SHUTDOWN 250>;
++				};
++
++				shutdown4 {
++					shutdown_state;
++					set = <RED 0>, <AMBER 0>, <GREEN 0>;
++				};
++			};
++	       };
++        };
++
++	__overrides__ {
++		fsm_debug = <&fsm_demo>,"debug:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ghost-amp-overlay.dts b/arch/arm/boot/dts/overlays/ghost-amp-overlay.dts
+new file mode 100644
+index 000000000000..7509e00679c8
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ghost-amp-overlay.dts
+@@ -0,0 +1,145 @@
++// Overlay for the PCM5122-based Ghost amplifier using gpio-fsm
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio-fsm.h>
++
++#define ENABLE   GF_SW(0)
++#define FAULT    GF_IP(0) // GPIO5
++#define RELAY1   GF_OP(0) // GPIO22
++#define RELAY2   GF_OP(1) // GPIO23
++#define RELAYSSR GF_OP(2) // GPIO24
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4c>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		iqaudio_dac: __overlay__ {
++			compatible = "iqaudio,iqaudio-dac";
++			i2s-controller = <&i2s>;
++			mute-gpios = <&amp 0 0>;
++			iqaudio-dac,auto-mute-amp;
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			amp: ghost-amp {
++				compatible = "rpi,gpio-fsm";
++				pinctrl-names = "default";
++				pinctrl-0 = <&ghost_amp_pins>;
++
++				debug = <0>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				num-swgpios = <1>;
++				gpio-line-names = "enable";
++				input-gpios  = <&gpio 5 1>;  // FAULT (active low)
++				output-gpios = <&gpio 22 0>, // RELAY1
++					       <&gpio 23 0>, // RELAY2
++					       <&gpio 24 0>; // RELAYSSR
++				shutdown-timeout-ms = <1000>;
++
++				amp_off {
++					start_state;
++					shutdown_state;
++
++					set = <RELAYSSR 0>,
++					      <RELAY2 0>,
++					      <RELAY1 0>;
++					amp_on_1 = <ENABLE 1>;
++					fault = <FAULT 1>;
++				};
++
++				amp_on_1 {
++					set = <RELAY1 1>;
++					amp_on_2 = <GF_DELAY 1000>;
++					amp_off = <GF_SHUTDOWN 0>;
++					fault = <FAULT 1>;
++				};
++
++				amp_on_2 {
++					set = <RELAY2 1>;
++					amp_on_wait = <ENABLE 0>;
++					amp_on = <GF_DELAY 1>;
++					fault = <FAULT 1>;
++				};
++
++				amp_on {
++					set = <RELAYSSR 1>;
++					amp_on_wait = <ENABLE 0>;
++					fault = <FAULT 1>;
++				};
++
++				amp_on_wait {
++					set = <RELAYSSR 0>;
++					amp_off_1 = <GF_DELAY (30*60*1000)>,
++						    <GF_SHUTDOWN 0>;
++					amp_on = <ENABLE 1>;
++					fault = <FAULT 1>;
++				};
++
++				amp_off_1 {
++					set = <RELAY2 0>;
++					amp_on = <ENABLE 1>;
++					amp_off = <GF_DELAY 100>;
++					fault = <FAULT 1>;
++				};
++
++				// Keep this a distinct state to prevent
++				// changes and for the diagnostic output
++				fault {
++					set = <RELAYSSR 0>,
++					      <RELAY2 0>,
++					      <RELAY1 0>;
++					amp_off = <FAULT 0>;
++					shutdown_state;
++				};
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&gpio>;
++		__overlay__ {
++			ghost_amp_pins: ghost_amp_pins {
++				brcm,pins = <5 22 23 24>;
++				brcm,function = <0 1 1 1>; /* in out out out */
++				brcm,pull = <2 0 0 0>; /* up none none none */
++			};
++		};
++	};
++
++	__overrides__ {
++		fsm_debug = <&amp>,"debug:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/goodix-overlay.dts b/arch/arm/boot/dts/overlays/goodix-overlay.dts
+new file mode 100644
+index 000000000000..8571527de49a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/goodix-overlay.dts
+@@ -0,0 +1,46 @@
++// Device tree overlay for I2C connected Goodix gt9271 multiple touch controller
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			goodix_pins: goodix_pins {
++				brcm,pins = <4 17>; // interrupt and reset
++				brcm,function = <0 0>; // in
++				brcm,pull = <2 2>; // pull-up
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			gt9271: gt9271@14 {
++				compatible = "goodix,gt9271";
++				reg = <0x14>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&goodix_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 2>; // high-to-low edge triggered
++				irq-gpios = <&gpio 4 0>; // Pin7 on GPIO header
++				reset-gpios = <&gpio 17 0>; // Pin11 on GPIO header
++			};
++		};
++	};
++
++	__overrides__ {
++		interrupt = <&goodix_pins>,"brcm,pins:0",
++			<&gt9271>,"interrupts:0",
++			<&gt9271>,"irq-gpios:4";
++		reset = <&goodix_pins>,"brcm,pins:4",
++			<&gt9271>,"reset-gpios:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/googlevoicehat-soundcard-overlay.dts b/arch/arm/boot/dts/overlays/googlevoicehat-soundcard-overlay.dts
+new file mode 100644
+index 000000000000..e443be1f9a0e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/googlevoicehat-soundcard-overlay.dts
+@@ -0,0 +1,49 @@
++// Definitions for Google voiceHAT v1 soundcard overlay
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			googlevoicehat_pins: googlevoicehat_pins {
++				brcm,pins = <16>;
++				brcm,function = <1>; /* out */
++				brcm,pull = <0>; /* up */
++			};
++		};
++	};
++
++
++	fragment@2 {
++		target-path = "/";
++		__overlay__ {
++			voicehat-codec {
++				#sound-dai-cells = <0>;
++				compatible = "google,voicehat";
++				pinctrl-names = "default";
++				pinctrl-0 = <&googlevoicehat_pins>;
++				sdmode-gpios= <&gpio 16 0>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "googlevoicehat,googlevoicehat-soundcard";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts b/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
+new file mode 100644
+index 000000000000..77a7bbb41e3b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
+@@ -0,0 +1,79 @@
++/*
++ * Overlay for the Raspberry Pi GPIO Fan @ BCM GPIO12.
++ * References: 
++ *	- https://www.raspberrypi.org/forums/viewtopic.php?f=107&p=1367135#p1365084
++ *
++ * Optional parameters:
++ *	- "gpiopin"	- BCM number of the pin driving the fan, default 12 (GPIO12);
++ * 	- "temp"	- CPU temperature at which fan is started in millicelsius, default 55000;
++ *
++ * Requires:
++ *	- kernel configurations: CONFIG_SENSORS_GPIO_FAN=m;
++ *	- kernel rebuild;
++ *	- N-MOSFET connected to gpiopin, 2N7002-[https://en.wikipedia.org/wiki/2N7000];
++ *	- DC Fan connected to N-MOSFET Drain terminal, a 12V fan is working fine and quite silently;
++ *	  [https://www.tme.eu/en/details/ee40101s1-999-a/dc12v-fans/sunon/ee40101s1-1000u-999/]
++ *
++ *                   ┌─────────────────────┐
++ *                   │Fan negative terminal│
++ *                   └┬────────────────────┘
++ *                    │D
++ *             G   │──┘
++ * [GPIO12]──────┤ │<─┐  2N7002
++ *                 │──┤
++ *                    │S
++ *                   ─┴─
++ *                   GND
++ *
++ * Build:
++ * 	- `sudo dtc -W no-unit_address_vs_reg -@ -I dts -O dtb -o /boot/overlays/gpio-fan.dtbo gpio-fan-overlay.dts`
++ * Activate:
++ *	- sudo nano /boot/config.txt add "dtoverlay=gpio-fan" or "dtoverlay=gpio-fan,gpiopin=12,temp=45000"
++ *	 or
++ *	- sudo sh -c 'printf "\n# Enable PI GPIO-Fan Default\ndtoverlay=gpio-fan\n" >> /boot/config.txt'
++ *	- sudo sh -c 'printf "\n# Enable PI GPIO-Fan Custom\ndtoverlay=gpio-fan,gpiopin=12,temp=45000\n" >> /boot/config.txt'
++ *
++ */
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			fan0: gpio-fan@0 {
++				compatible = "gpio-fan";
++				gpios = <&gpio 12 0>;
++				gpio-fan,speed-map = <0    0>,
++									 <5000 1>;
++				#cooling-cells = <2>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&cpu_thermal>;
++		polling-delay = <2000>;	/* milliseconds */
++		__overlay__ {
++			trips {
++				cpu_hot: trip-point@0 {
++					temperature = <55000>;	/* (millicelsius) Fan started at 55°C */
++					hysteresis = <10000>;	/* (millicelsius) Fan stopped at 45°C */
++					type = "active";
++				};
++			};
++			cooling-maps {
++				map0 {
++					trip = <&cpu_hot>;
++					cooling-device = <&fan0 1 1>;
++				};
++			};
++		};
++	};
++	__overrides__ {
++		gpiopin = <&fan0>,"gpios:4", <&fan0>,"brcm,pins:0";
++		temp = <&cpu_hot>,"temperature:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts b/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
+new file mode 100644
+index 000000000000..162b6ce07dc9
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
+@@ -0,0 +1,49 @@
++// Definitions for ir-gpio module
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target-path = "/";
++                __overlay__ {
++                        gpio_ir: ir-receiver@12 {
++                                compatible = "gpio-ir-receiver";
++                                pinctrl-names = "default";
++                                pinctrl-0 = <&gpio_ir_pins>;
++
++                                // pin number, high or low
++                                gpios = <&gpio 18 1>;
++
++                                // parameter for keymap name
++                                linux,rc-map-name = "rc-rc6-mce";
++
++                                status = "okay";
++                        };
++                };
++        };
++
++        fragment@1 {
++                target = <&gpio>;
++                __overlay__ {
++                        gpio_ir_pins: gpio_ir_pins@12 {
++                                brcm,pins = <18>;                       // pin 18
++                                brcm,function = <0>;                    // in
++                                brcm,pull = <2>;                        // up
++                        };
++                };
++        };
++
++        __overrides__ {
++                // parameters
++                gpio_pin =      <&gpio_ir>,"gpios:4",           // pin number
++                                <&gpio_ir>,"reg:0",
++                                <&gpio_ir_pins>,"brcm,pins:0",
++                                <&gpio_ir_pins>,"reg:0";
++                gpio_pull = <&gpio_ir_pins>,"brcm,pull:0";              // pull-up/down state
++                invert = <&gpio_ir>,"gpios:8";                          // 0 = active high input
++
++                rc-map-name = <&gpio_ir>,"linux,rc-map-name";           // default rc map
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-ir-tx-overlay.dts b/arch/arm/boot/dts/overlays/gpio-ir-tx-overlay.dts
+new file mode 100644
+index 000000000000..3625431b7560
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-ir-tx-overlay.dts
+@@ -0,0 +1,36 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			gpio_ir_tx_pins: gpio_ir_tx_pins@12 {
++				brcm,pins = <18>;
++				brcm,function = <1>;	// out
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			gpio_ir_tx: gpio-ir-transmitter@12 {
++				compatible = "gpio-ir-tx";
++				pinctrl-names = "default";
++				pinctrl-0 = <&gpio_ir_tx_pins>;
++				gpios = <&gpio 18 0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		gpio_pin = <&gpio_ir_tx>, "gpios:4",           	// pin number
++			   <&gpio_ir_tx>, "reg:0",
++			   <&gpio_ir_tx_pins>, "brcm,pins:0",
++			   <&gpio_ir_tx_pins>, "reg:0";
++		invert = <&gpio_ir_tx>, "gpios:8";		// 1 = active low
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-key-overlay.dts b/arch/arm/boot/dts/overlays/gpio-key-overlay.dts
+new file mode 100644
+index 000000000000..2e7253d1d0ab
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-key-overlay.dts
+@@ -0,0 +1,48 @@
++// Definitions for gpio-key module
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		// Configure the gpio pin controller
++		target = <&gpio>;
++		__overlay__ {
++			pin_state: button_pins@0 {
++				brcm,pins = <3>; // gpio number
++				brcm,function = <0>; // 0 = input, 1 = output
++				brcm,pull = <2>; // 0 = none, 1 = pull down, 2 = pull up
++			};
++		};
++	};
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			button: button@0 {
++				compatible = "gpio-keys";
++				pinctrl-names = "default";
++				pinctrl-0 = <&pin_state>;
++				status = "okay";
++
++				key: key {
++					linux,code = <116>;
++					gpios = <&gpio 3 1>;
++					label = "KEY_POWER";
++				};
++			};
++		};
++	};
++
++	__overrides__ {
++		gpio =       <&key>,"gpios:4",
++		             <&button>,"reg:0",
++		             <&pin_state>,"brcm,pins:0",
++		             <&pin_state>,"reg:0";
++		label =      <&key>,"label";
++		keycode =    <&key>,"linux,code:0";
++		gpio_pull =  <&pin_state>,"brcm,pull:0";
++		active_low = <&key>,"gpios:8";
++	};
++
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-led-overlay.dts b/arch/arm/boot/dts/overlays/gpio-led-overlay.dts
+new file mode 100755
+index 000000000000..d8e9d53f1b61
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-led-overlay.dts
+@@ -0,0 +1,97 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++/*
++ * gpio-led - generic connection of kernel's LED framework to the RPI's GPIO.
++ * Copyright (C) 2021 House Gordon Software Company Ltd. <assafgordon@gmail.com>
++ *
++ * Based on information from:
++ *   https://mjoldfield.com/atelier/2017/03/rpi-devicetree.html
++ *   https://www.raspberrypi.org/documentation/configuration/device-tree.md
++ *   https://www.kernel.org/doc/html/latest/leds/index.html
++ *
++ * compile with:
++ *   dtc -@ -Hepapr -I dts -O dtb -o gpio-led.dtbo gpio-led-overlay.dts
++ *
++ * There will be some warnings (can be ignored):
++ *  Warning (label_is_string): /__overrides__:label: property is not a string
++ *  Warning (unit_address_vs_reg): /fragment@0/__overlay__/led_pins@0:
++ *                                 node has a unit name, but no reg property
++ *  Warning (unit_address_vs_reg): /fragment@1/__overlay__/leds@0:
++ *                                 node has a unit name, but no reg property
++ *  Warning (gpios_property): /__overrides__: Missing property
++ *                 '#gpio-cells' in node /fragment@1/__overlay__/leds@0/led
++ *                  or bad phandle (referred from gpio[0])
++ *
++ * Typical electrical connection is:
++ *    RPI-GPIO.19  ->  LED  -> 300ohm resister  -> RPI-GND
++ *    The GPIO pin number can be changed with the 'gpio=' parameter.
++ *
++ * Test from user-space with:
++ *   # if nothing is shown, the overlay file isn't found in /boot/overlays
++ *   dtoverlay -a | grep gpio-led
++ *
++ *   # Load the overlay
++ *   dtoverlay gpio-led label=moo gpio=19
++ *
++ *   # if nothing is shown, the overlay wasn't loaded successfully
++ *   dtoverlay -l | grep gpio-led
++ *
++ *   echo 1 > /sys/class/leds/moo/brightness
++ *   echo 0 > /sys/class/leds/moo/brightness
++ *   echo cpu > /sys/class/leds/moo/trigger
++ *   echo heartbeat > /sys/class/leds/moo/trigger
++ *
++ *   # unload the overlay
++ *   dtoverlay -r gpio-led
++ *
++ * To load in /boot/config.txt add lines such as:
++ *   dtoverlay=gpio-led,gpio=19,label=heart,trigger=heartbeat
++ *   dtoverlay=gpio-led,gpio=26,label=brain,trigger=cpu
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		// Configure the gpio pin controller
++		target = <&gpio>;
++		__overlay__ {
++			led_pin: led_pins@19 {
++				brcm,pins = <19>; // gpio number
++				brcm,function = <1>; // 0 = input, 1 = output
++				brcm,pull = <0>; // 0 = none, 1 = pull down, 2 = pull up
++			};
++		};
++	};
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			leds: leds@0 {
++				compatible = "gpio-leds";
++				pinctrl-names = "default";
++				pinctrl-0 = <&led_pin>;
++				status = "okay";
++
++				led: led {
++			                label = "myled1";
++					gpios = <&gpio 19 0>;
++			                linux,default-trigger = "none";
++				};
++			};
++		};
++	};
++
++	__overrides__ {
++		gpio =       <&led>,"gpios:4",
++		             <&leds>,"reg:0",
++		             <&led_pin>,"brcm,pins:0",
++		             <&led_pin>,"reg:0";
++		label =      <&led>,"label";
++		active_low = <&led>,"gpios:8";
++		trigger =    <&led>,"linux,default-trigger";
++	};
++
++};
++
+diff --git a/arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts b/arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts
+new file mode 100755
+index 000000000000..96cbe80820b7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-no-bank0-irq-overlay.dts
+@@ -0,0 +1,14 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		// Configure the gpio pin controller
++		target = <&gpio>;
++		__overlay__ {
++			    interrupts = <255 255>, <2 18>;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts b/arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts
+new file mode 100644
+index 000000000000..55f9bff3a8f6
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts
+@@ -0,0 +1,14 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		// Configure the gpio pin controller
++		target = <&gpio>;
++		__overlay__ {
++			    interrupts;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts b/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts
+new file mode 100644
+index 000000000000..416aa2bc797a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts
+@@ -0,0 +1,37 @@
++// Definitions for gpio-poweroff module
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			power_ctrl: power_ctrl {
++				compatible = "gpio-poweroff";
++				gpios = <&gpio 26 0>;
++				force;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			power_ctrl_pins: power_ctrl_pins {
++				brcm,pins = <26>;
++				brcm,function = <1>; // out
++			};
++		};
++	};
++
++	__overrides__ {
++		gpiopin =       <&power_ctrl>,"gpios:4",
++				<&power_ctrl_pins>,"brcm,pins:0";
++		active_low =    <&power_ctrl>,"gpios:8";
++		input =         <&power_ctrl>,"input?";
++		export =        <&power_ctrl>,"export?";
++		timeout_ms =    <&power_ctrl>,"timeout-ms:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts b/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts
+new file mode 100644
+index 000000000000..da148064aedd
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts
+@@ -0,0 +1,86 @@
++// Definitions for gpio-poweroff module
++/dts-v1/;
++/plugin/;
++
++// This overlay sets up an input device that generates KEY_POWER events
++// when a given GPIO pin changes. It defaults to using GPIO3, which can
++// also be used to wake up (start) the Rpi again after shutdown.
++// Raspberry Pi 1 Model B rev 1 can be wake up only by GPIO1 pin, so for
++// these boards change default GPIO pin to 1 via gpio_pin parameter. Since
++// wakeup is active-low, this defaults to active-low with a pullup
++// enabled, but all of this can be changed using overlay parameters (but
++// note that GPIO3 has an external pullup on at least some boards).
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		// Configure the gpio pin controller
++		target = <&gpio>;
++		__overlay__ {
++			// Define a pinctrl state, that sets up the gpio
++			// as an input with a pullup enabled. This does
++			// not take effect by itself, only when referenced
++			// by a "pinctrl client", as is done below. See:
++			//   https://www.kernel.org/doc/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
++			//   https://www.kernel.org/doc/Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt
++			pin_state: shutdown_button_pins@3 {
++				brcm,pins = <3>; // gpio number
++				brcm,function = <0>; // 0 = input, 1 = output
++				brcm,pull = <2>; // 0 = none, 1 = pull down, 2 = pull up
++			};
++		};
++	};
++	fragment@1 {
++		// Add a new device to the /soc devicetree node
++		target-path = "/soc";
++		__overlay__ {
++			shutdown_button: shutdown_button@3 {
++				// Let the gpio-keys driver handle this device. See:
++				// https://www.kernel.org/doc/Documentation/devicetree/bindings/input/gpio-keys.txt
++				compatible = "gpio-keys";
++
++				// Declare a single pinctrl state (referencing the one declared above) and name it
++				// default, so it is activated automatically.
++				pinctrl-names = "default";
++				pinctrl-0 = <&pin_state>;
++
++				// Enable this device
++				status = "okay";
++
++				// Define a single key, called "shutdown" that monitors the gpio and sends KEY_POWER
++				// (keycode 116, see
++				// https://github.com/torvalds/linux/blob/v4.12/include/uapi/linux/input-event-codes.h#L190)
++				button: shutdown {
++					label = "shutdown";
++					linux,code = <116>; // KEY_POWER
++					gpios = <&gpio 3 1>;
++					debounce-interval = <100>; // ms
++				};
++			};
++		};
++	};
++
++	// This defines parameters that can be specified when loading
++	// the overlay. Each foo = line specifies one parameter, named
++	// foo. The rest of the specification gives properties where the
++	// parameter value is inserted into (changing the values above
++	// or adding new ones).
++	__overrides__ {
++		// Allow overriding the GPIO number.
++		gpio_pin = <&button>,"gpios:4",
++			   <&shutdown_button>,"reg:0",
++			   <&pin_state>,"reg:0",
++		           <&pin_state>,"brcm,pins:0";
++
++		// Allow changing the internal pullup/down state. 0 = none, 1 = pulldown, 2 = pullup
++		// Note that GPIO3 and GPIO2 are the I2c pins and have an external pullup (at least
++		// on some boards). Same applies for GPIO1 on Raspberry Pi 1 Model B rev 1.
++		gpio_pull = <&pin_state>,"brcm,pull:0";
++
++		// Allow setting the active_low flag. 0 = active high, 1 = active low
++		active_low = <&button>,"gpios:8";
++		debounce = <&button>,"debounce-interval:0";
++	};
++
++};
+diff --git a/arch/arm/boot/dts/overlays/hd44780-lcd-overlay.dts b/arch/arm/boot/dts/overlays/hd44780-lcd-overlay.dts
+new file mode 100644
+index 000000000000..ee726669ff51
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hd44780-lcd-overlay.dts
+@@ -0,0 +1,46 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++
++    fragment@0 {
++        target-path = "/";
++        __overlay__ {
++            lcd_screen: auxdisplay {
++                compatible = "hit,hd44780";
++
++                data-gpios = <&gpio 6 0>,
++                             <&gpio 13 0>,
++                             <&gpio 19 0>,
++                             <&gpio 26 0>;
++                enable-gpios = <&gpio 21 0>;
++                rs-gpios = <&gpio 20 0>;
++
++                display-height-chars = <2>;
++                display-width-chars = <16>;
++            };
++
++        };
++    };
++
++    fragment@1 {
++       target = <&lcd_screen>;
++        __dormant__ {
++            backlight-gpios = <&gpio 12 0>;
++        };
++    };
++
++    __overrides__ {
++        pin_d4 = <&lcd_screen>,"data-gpios:4";
++        pin_d5 = <&lcd_screen>,"data-gpios:16";
++        pin_d6 = <&lcd_screen>,"data-gpios:28";
++        pin_d7 = <&lcd_screen>,"data-gpios:40";
++        pin_en = <&lcd_screen>,"enable-gpios:4";
++        pin_rs = <&lcd_screen>,"rs-gpios:4";
++        pin_bl = <0>,"+1", <&lcd_screen>,"backlight-gpios:4";
++        display_height = <&lcd_screen>,"display-height-chars:0";
++        display_width = <&lcd_screen>,"display-width-chars:0";
++    };
++
++};
+diff --git a/arch/arm/boot/dts/overlays/hdmi-backlight-hwhack-gpio-overlay.dts b/arch/arm/boot/dts/overlays/hdmi-backlight-hwhack-gpio-overlay.dts
+new file mode 100644
+index 000000000000..50b9a2665c80
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hdmi-backlight-hwhack-gpio-overlay.dts
+@@ -0,0 +1,47 @@
++/*
++ * Devicetree overlay for GPIO based backlight on/off capability.
++ *
++ * Use this if you have one of those HDMI displays whose backlight cannot be
++ * controlled via DPMS over HDMI and plan to do a little soldering to use an
++ * RPi gpio pin for on/off switching.
++ *
++ * See: https://www.waveshare.com/wiki/7inch_HDMI_LCD_(C)#Backlight_Control
++ *
++ */
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			hdmi_backlight_hwhack_gpio_pins: hdmi_backlight_hwhack_gpio_pins {
++				brcm,pins = <17>;
++				brcm,function = <1>; /* out */
++			};
++		};
++	};
++
++	fragment@2 {
++		target-path = "/";
++		__overlay__ {
++			hdmi_backlight_hwhack_gpio: hdmi_backlight_hwhack_gpio {
++				compatible = "gpio-backlight";
++
++				pinctrl-names = "default";
++				pinctrl-0 = <&hdmi_backlight_hwhack_gpio_pins>;
++
++				gpios = <&gpio 17 0>;
++				default-on;
++			};
++		};
++	};
++
++	__overrides__ {
++		gpio_pin   = <&hdmi_backlight_hwhack_gpio>,"gpios:4",
++		             <&hdmi_backlight_hwhack_gpio_pins>,"brcm,pins:0";
++		active_low = <&hdmi_backlight_hwhack_gpio>,"gpios:8";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
+new file mode 100644
+index 000000000000..142518ab348b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
+@@ -0,0 +1,39 @@
++// Definitions for HiFiBerry Amp/Amp+
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			tas5713@1b {
++				#sound-dai-cells = <0>;
++				compatible = "ti,tas5713";
++				reg = <0x1b>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "hifiberry,hifiberry-amp";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts
+new file mode 100644
+index 000000000000..ebdef55d6110
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-amp100-overlay.dts
+@@ -0,0 +1,64 @@
++// Definitions for HiFiBerry AMP100
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			dacpro_osc: dacpro_osc {
++				compatible = "hifiberry,dacpro-clk";
++				#clock-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				clocks = <&dacpro_osc>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		hifiberry_dacplus: __overlay__ {
++			compatible = "hifiberry,hifiberry-dacplus";
++			i2s-controller = <&i2s>;
++			status = "okay";
++			mute-gpio = <&gpio 4 0>;
++			reset-gpio = <&gpio 17 0x11>;
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain =
++			<&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
++		slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?";
++		leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?";
++		mute_ext_ctl = <&hifiberry_dacplus>,"hifiberry-dacplus,mute_ext_ctl:0";
++		auto_mute = <&hifiberry_dacplus>,"hifiberry-dacplus,auto_mute?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
+new file mode 100644
+index 000000000000..ea8a6c8f36c0
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
+@@ -0,0 +1,34 @@
++// Definitions for HiFiBerry DAC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			pcm5102a-codec {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5102a";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "hifiberry,hifiberry-dac";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
+new file mode 100644
+index 000000000000..ff19015ba656
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
+@@ -0,0 +1,65 @@
++// Definitions for HiFiBerry DAC+
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			dacpro_osc: dacpro_osc {
++				compatible = "hifiberry,dacpro-clk";
++				#clock-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				clocks = <&dacpro_osc>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++			hpamp: hpamp@60 {
++				compatible = "ti,tpa6130a2";
++				reg = <0x60>;
++				status = "disabled";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		hifiberry_dacplus: __overlay__ {
++			compatible = "hifiberry,hifiberry-dacplus";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain =
++			<&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
++		slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?";
++		leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-dacplusadc-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-dacplusadc-overlay.dts
+new file mode 100644
+index 000000000000..540563dec10f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadc-overlay.dts
+@@ -0,0 +1,72 @@
++// Definitions for HiFiBerry DAC+ADC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			dacpro_osc: dacpro_osc {
++				compatible = "hifiberry,dacpro-clk";
++				#clock-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm_codec: pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				clocks = <&dacpro_osc>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			dmic {
++				#sound-dai-cells = <0>;
++				compatible = "dmic-codec";
++				num-channels = <2>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&sound>;
++		hifiberry_dacplusadc: __overlay__ {
++			compatible = "hifiberry,hifiberry-dacplusadc";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain =
++			<&hifiberry_dacplusadc>,"hifiberry,24db_digital_gain?";
++		slave = <&hifiberry_dacplusadc>,"hifiberry-dacplusadc,slave?";
++		leds_off = <&hifiberry_dacplusadc>,"hifiberry-dacplusadc,leds_off?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
+new file mode 100644
+index 000000000000..cafa2ccd7ff7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
+@@ -0,0 +1,65 @@
++// Definitions for HiFiBerry DAC+ADC PRO
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			dacpro_osc: dacpro_osc {
++				compatible = "hifiberry,dacpro-clk";
++				#clock-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			hb_dac: pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				clocks = <&dacpro_osc>;
++				status = "okay";
++			};
++			hb_adc: pcm186x@4a {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm1863";
++				reg = <0x4a>;
++				clocks = <&dacpro_osc>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		hifiberry_dacplusadcpro: __overlay__ {
++			compatible = "hifiberry,hifiberry-dacplusadcpro";
++			audio-codec = <&hb_dac &hb_adc>;
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain =
++			<&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,24db_digital_gain?";
++		slave = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,slave?";
++		leds_off = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,leds_off?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-dacplusdsp-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-dacplusdsp-overlay.dts
+new file mode 100644
+index 000000000000..63432e8b983f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusdsp-overlay.dts
+@@ -0,0 +1,34 @@
++// Definitions for hifiberry DAC+DSP soundcard overlay
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			dacplusdsp-codec {
++				#sound-dai-cells = <0>;
++				compatible = "hifiberry,dacplusdsp";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "hifiberrydacplusdsp,hifiberrydacplusdsp-soundcard";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-dacplushd-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-dacplushd-overlay.dts
+new file mode 100644
+index 000000000000..c5583e010339
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplushd-overlay.dts
+@@ -0,0 +1,106 @@
++// Definitions for HiFiBerry DAC+ HD
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			dachd_osc: pll_dachd_osc {
++				compatible = "hifiberry,dachd-clk";
++				#clock-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm1792a@4c {
++				compatible = "ti,pcm1792a";
++				#sound-dai-cells = <0>;
++				#clock-cells = <0>;
++				clocks = <&dachd_osc>;
++				reg = <0x4c>;
++				status = "okay";
++			};
++			pll: pll@62 {
++				compatible = "hifiberry,dachd-clk";
++				#clock-cells = <0>;
++				reg = <0x62>;
++				clocks = <&dachd_osc>;
++				status = "okay";
++				common_pll_regs = [
++					02 53 03 00 07 20 0F 00
++					10 0D 11 1D 12 0D 13 8C
++					14 8C 15 8C 16 8C 17 8C
++					18 2A 1C 00 1D 0F 1F 00
++					2A 00 2C 00 2F 00 30 00
++					31 00 32 00 34 00 37 00
++					38 00 39 00 3A 00 3B 01
++					3E 00 3F 00 40 00 41 00
++					5A 00 5B 00 95 00 96 00
++					97 00 98 00 99 00 9A 00
++					9B 00 A2 00 A3 00 A4 00
++					B7 92 ];
++				192k_pll_regs = [
++					1A 0C 1B 35 1E F0 20 09
++					21 50 2B 02 2D 10 2E 40
++					33 01 35 22 36 80 3C 22
++					3D 46 ];
++				96k_pll_regs = [
++					1A 0C 1B 35 1E F0 20 09
++					21 50 2B 02 2D 10 2E 40
++					33 01 35 47 36 00 3C 32
++					3D 46 ];
++				48k_pll_regs = [
++					1A 0C 1B 35 1E F0 20 09
++					21 50 2B 02 2D 10 2E 40
++					33 01 35 90 36 00 3C 42
++					3D 46 ];
++				176k4_pll_regs = [
++					1A 3D 1B 09 1E F3 20 13
++					21 75 2B 04 2D 11 2E E0
++					33 02 35 25 36 C0 3C 22
++					3D 7A ];
++				88k2_pll_regs = [
++					1A 3D 1B 09 1E F3 20 13
++					21 75 2B 04 2D 11 2E E0
++					33 01 35 4D 36 80 3C 32
++					3D 7A ];
++				44k1_pll_regs = [
++					1A 3D 1B 09 1E F3 20 13
++					21 75 2B 04 2D 11 2E E0
++					33 01 35 9D 36 00 3C 42
++					3D 7A ];
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "hifiberry,hifiberry-dacplushd";
++			i2s-controller = <&i2s>;
++			clocks = <&pll 0>;
++			reset-gpio = <&gpio 16 GPIO_ACTIVE_LOW>;
++			status = "okay";
++		};
++	};
++
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
+new file mode 100644
+index 000000000000..a2309a50e8d8
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
+@@ -0,0 +1,41 @@
++// Definitions for HiFiBerry Digi
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8804@3b {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				PVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "hifiberry,hifiberry-digi";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts b/arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts
+new file mode 100644
+index 000000000000..83de602e76ba
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts
+@@ -0,0 +1,43 @@
++// Definitions for HiFiBerry Digi Pro
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8804@3b {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				PVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "hifiberry,hifiberry-digi";
++			i2s-controller = <&i2s>;
++			status = "okay";
++			clock44-gpio = <&gpio 5 0>;
++			clock48-gpio = <&gpio 6 0>;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/highperi-overlay.dts b/arch/arm/boot/dts/overlays/highperi-overlay.dts
+new file mode 100644
+index 000000000000..46cb76c2d34f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/highperi-overlay.dts
+@@ -0,0 +1,63 @@
++/*
++ * highperi.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&soc>;
++		#address-cells = <2>;
++		#size-cells = <1>;
++
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <1>;
++			ranges = <0x7c000000  0x4 0x7c000000  0x04000000>,
++				 <0x40000000  0x4 0xc0000000  0x00800000>;
++		};
++	};
++
++	fragment@1 {
++		target = <&scb>;
++		#address-cells = <2>;
++		#size-cells = <1>;
++
++		__overlay__ {
++			#address-cells = <2>;
++			#size-cells = <2>;
++			ranges = <0x0 0x7c000000  0x4 0x7c000000  0x0 0x04000000>,
++				 <0x0 0x40000000  0x4 0xc0000000  0x0 0x00800000>,
++				 <0x6 0x00000000  0x6 0x00000000  0x0 0x40000000>;
++			dma-ranges = <0x0 0x00000000  0x0 0x00000000  0x2 0x00000000>;
++		};
++	};
++
++	fragment@2 {
++		target = <&v3dbus>;
++		#address-cells = <2>;
++		#size-cells = <1>;
++
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <2>;
++			ranges = <0x7c500000  0x4 0x7c500000  0x0 0x03300000>,
++				 <0x40000000  0x4 0xc0000000  0x0 0x00800000>;
++		};
++	};
++
++	fragment@3 {
++		target = <&emmc2bus>;
++		#address-cells = <2>;
++		#size-cells = <1>;
++
++		__overlay__ {
++			#address-cells = <2>;
++			#size-cells = <1>;
++			ranges = <0x0 0x7e000000  0x4 0x7e000000  0x01800000>;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hy28a-overlay.dts b/arch/arm/boot/dts/overlays/hy28a-overlay.dts
+new file mode 100644
+index 000000000000..5843a5e9c86a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hy28a-overlay.dts
+@@ -0,0 +1,93 @@
++/*
++ * Device Tree overlay for HY28A display
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			hy28a_pins: hy28a_pins {
++				brcm,pins = <17 25 18>;
++				brcm,function = <0 1 1>; /* in out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			hy28a: hy28a@0{
++				compatible = "ilitek,ili9320";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&hy28a_pins>;
++
++				spi-max-frequency = <32000000>;
++				spi-cpol;
++				spi-cpha;
++				rotate = <270>;
++				bgr;
++				fps = <50>;
++				buswidth = <8>;
++				startbyte = <0x70>;
++				reset-gpios = <&gpio 25 1>;
++				led-gpios = <&gpio 18 1>;
++				debug = <0>;
++			};
++
++			hy28a_ts: hy28a-ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <17 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 17 0>;
++				ti,x-plate-ohms = /bits/ 16 <100>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++	__overrides__ {
++		speed =		<&hy28a>,"spi-max-frequency:0";
++		rotate =	<&hy28a>,"rotate:0";
++		fps =		<&hy28a>,"fps:0";
++		debug =		<&hy28a>,"debug:0";
++		xohms =		<&hy28a_ts>,"ti,x-plate-ohms;0";
++		resetgpio =	<&hy28a>,"reset-gpios:4",
++				<&hy28a_pins>, "brcm,pins:4";
++		ledgpio =	<&hy28a>,"led-gpios:4",
++				<&hy28a_pins>, "brcm,pins:8";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts b/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
+new file mode 100644
+index 000000000000..95bfb1eadc20
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
+@@ -0,0 +1,152 @@
++/*
++ * Device Tree overlay for HY28b display shield by Texy.
++ * Modified for 2017 version with ILI9325 D chip
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			hy28b_pins: hy28b_pins {
++				brcm,pins = <17 25 18>;
++				brcm,function = <0 1 1>; /* in out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			hy28b: hy28b@0{
++				compatible = "ilitek,ili9325";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&hy28b_pins>;
++
++				spi-max-frequency = <48000000>;
++				spi-cpol;
++				spi-cpha;
++				rotate = <270>;
++				bgr;
++				fps = <50>;
++				buswidth = <8>;
++				startbyte = <0x70>;
++				reset-gpios = <&gpio 25 1>;
++				led-gpios = <&gpio 18 1>;
++
++				init = <0x10000e5 0x78F0
++					0x1000001 0x0100
++					0x1000002 0x0700
++				        0x1000003 0x1030
++					0x1000004 0x0000
++					0x1000008 0x0207
++					0x1000009 0x0000
++				        0x100000a 0x0000
++					0x100000c 0x0000
++					0x100000d 0x0000
++					0x100000f 0x0000
++				        0x1000010 0x0000
++					0x1000011 0x0007
++					0x1000012 0x0000
++					0x1000013 0x0000
++					0x1000007 0x0001
++				        0x2000032
++				        0x2000032
++				        0x2000032
++				        0x2000032
++					0x1000010 0x1090
++					0x1000011 0x0227
++				        0x2000032
++					0x1000012 0x001f
++				        0x2000032
++				        0x1000013 0x1500
++					0x1000029 0x0027
++					0x100002b 0x000d
++				        0x2000032
++				        0x1000020 0x0000
++					0x1000021 0x0000
++				        0x2000032
++					0x1000030 0x0000
++					0x1000031 0x0707
++					0x1000032 0x0307
++					0x1000035 0x0200
++					0x1000036 0x0008
++					0x1000037 0x0004
++					0x1000038 0x0000
++					0x1000039 0x0707
++					0x100003c 0x0002
++					0x100003d 0x1d04
++					0x1000050 0x0000
++				        0x1000051 0x00ef
++					0x1000052 0x0000
++					0x1000053 0x013f
++					0x1000060 0xa700
++				        0x1000061 0x0001
++					0x100006a 0x0000
++					0x1000080 0x0000
++					0x1000081 0x0000
++				        0x1000082 0x0000
++					0x1000083 0x0000
++					0x1000084 0x0000
++					0x1000085 0x0000
++				        0x1000090 0x0010
++					0x1000092 0x0600
++					0x1000007 0x0133>;
++				debug = <0>;
++			};
++
++			hy28b_ts: hy28b-ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <17 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 17 0>;
++				ti,x-plate-ohms = /bits/ 16 <100>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++	__overrides__ {
++		speed = 	<&hy28b>,"spi-max-frequency:0";
++		rotate = 	<&hy28b>,"rotate:0";
++		fps = 		<&hy28b>,"fps:0";
++		debug = 	<&hy28b>,"debug:0";
++		xohms =		<&hy28b_ts>,"ti,x-plate-ohms;0";
++		resetgpio =	<&hy28b>,"reset-gpios:4",
++				<&hy28b_pins>, "brcm,pins:4";
++		ledgpio =	<&hy28b>,"led-gpios:4",
++				<&hy28b_pins>, "brcm,pins:8";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/hy28b-overlay.dts b/arch/arm/boot/dts/overlays/hy28b-overlay.dts
+new file mode 100644
+index 000000000000..9edd0848d555
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/hy28b-overlay.dts
+@@ -0,0 +1,148 @@
++/*
++ * Device Tree overlay for HY28b display shield by Texy
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			hy28b_pins: hy28b_pins {
++				brcm,pins = <17 25 18>;
++				brcm,function = <0 1 1>; /* in out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			hy28b: hy28b@0{
++				compatible = "ilitek,ili9325";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&hy28b_pins>;
++
++				spi-max-frequency = <48000000>;
++				spi-cpol;
++				spi-cpha;
++				rotate = <270>;
++				bgr;
++				fps = <50>;
++				buswidth = <8>;
++				startbyte = <0x70>;
++				reset-gpios = <&gpio 25 1>;
++				led-gpios = <&gpio 18 1>;
++
++				gamma = "04 1F 4 7 7 0 7 7 6 0\n0F 00 1 7 4 0 0 0 6 7";
++
++				init = <0x10000e7 0x0010
++					0x1000000 0x0001
++					0x1000001 0x0100
++					0x1000002 0x0700
++				        0x1000003 0x1030
++					0x1000004 0x0000
++					0x1000008 0x0207
++					0x1000009 0x0000
++				        0x100000a 0x0000
++					0x100000c 0x0001
++					0x100000d 0x0000
++					0x100000f 0x0000
++				        0x1000010 0x0000
++					0x1000011 0x0007
++					0x1000012 0x0000
++					0x1000013 0x0000
++				        0x2000032
++					0x1000010 0x1590
++					0x1000011 0x0227
++				        0x2000032
++					0x1000012 0x009c
++				        0x2000032
++				        0x1000013 0x1900
++					0x1000029 0x0023
++					0x100002b 0x000e
++				        0x2000032
++				        0x1000020 0x0000
++					0x1000021 0x0000
++				        0x2000032
++					0x1000050 0x0000
++				        0x1000051 0x00ef
++					0x1000052 0x0000
++					0x1000053 0x013f
++					0x1000060 0xa700
++				        0x1000061 0x0001
++					0x100006a 0x0000
++					0x1000080 0x0000
++					0x1000081 0x0000
++				        0x1000082 0x0000
++					0x1000083 0x0000
++					0x1000084 0x0000
++					0x1000085 0x0000
++				        0x1000090 0x0010
++					0x1000092 0x0000
++					0x1000093 0x0003
++					0x1000095 0x0110
++				        0x1000097 0x0000
++					0x1000098 0x0000
++					0x1000007 0x0133
++					0x1000020 0x0000
++				        0x1000021 0x0000
++				        0x2000064>;
++				debug = <0>;
++			};
++
++			hy28b_ts: hy28b-ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <17 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 17 0>;
++				ti,x-plate-ohms = /bits/ 16 <100>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++	__overrides__ {
++		speed = 	<&hy28b>,"spi-max-frequency:0";
++		rotate = 	<&hy28b>,"rotate:0";
++		fps = 		<&hy28b>,"fps:0";
++		debug = 	<&hy28b>,"debug:0";
++		xohms =		<&hy28b_ts>,"ti,x-plate-ohms;0";
++		resetgpio =	<&hy28b>,"reset-gpios:4",
++				<&hy28b_pins>, "brcm,pins:4";
++		ledgpio =	<&hy28b>,"led-gpios:4",
++				<&hy28b_pins>, "brcm,pins:8";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i-sabre-q2m-overlay.dts b/arch/arm/boot/dts/overlays/i-sabre-q2m-overlay.dts
+new file mode 100644
+index 000000000000..0c4cff354674
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i-sabre-q2m-overlay.dts
+@@ -0,0 +1,39 @@
++// Definitions for I-Sabre Q2M
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&sound>;
++		frag0: __overlay__ {
++			compatible = "audiophonics,i-sabre-q2m";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			i-sabre-codec@48 {
++				#sound-dai-cells = <0>;
++				compatible = "audiophonics,i-sabre-codec";
++				reg = <0x48>;
++				status = "okay";
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-bcm2708-overlay.dts b/arch/arm/boot/dts/overlays/i2c-bcm2708-overlay.dts
+new file mode 100644
+index 000000000000..8204b6b3aef8
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-bcm2708-overlay.dts
+@@ -0,0 +1,13 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			compatible = "brcm,bcm2708-i2c";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts b/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
+new file mode 100644
+index 000000000000..63231b5d7c0c
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
+@@ -0,0 +1,47 @@
++// Overlay for i2c_gpio bitbanging host bus.
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++
++		__overlay__ {
++			i2c_gpio: i2c@0 {
++				reg = <0xffffffff>;
++				compatible = "i2c-gpio";
++				gpios = <&gpio 23 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* sda */
++					 &gpio 24 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* scl */
++					>;
++				i2c-gpio,delay-us = <2>;        /* ~100 kHz */
++				#address-cells = <1>;
++				#size-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/aliases";
++		__overlay__ {
++			i2c_gpio = "/i2c@0";
++		};
++	};
++
++	fragment@2 {
++		target-path = "/__symbols__";
++		__overlay__ {
++			i2c_gpio = "/i2c@0";
++		};
++	};
++
++	__overrides__ {
++		i2c_gpio_sda = <&i2c_gpio>,"gpios:4";
++		i2c_gpio_scl = <&i2c_gpio>,"gpios:16";
++		i2c_gpio_delay_us = <&i2c_gpio>,"i2c-gpio,delay-us:0";
++		bus = <&i2c_gpio>, "reg:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts b/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts
+new file mode 100644
+index 000000000000..112aed91ecb2
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts
+@@ -0,0 +1,139 @@
++// Umbrella I2C Mux overlay
++
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pca9542: mux@70 {
++				compatible = "nxp,pca9542";
++				reg = <0x70>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++
++				i2c@0 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <0>;
++				};
++				i2c@1 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <1>;
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pca9545: mux@70 {
++				compatible = "nxp,pca9545";
++				reg = <0x70>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++
++				i2c@0 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <0>;
++				};
++				i2c@1 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <1>;
++				};
++				i2c@2 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <2>;
++				};
++				i2c@3 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <3>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pca9548: mux@70 {
++				compatible = "nxp,pca9548";
++				reg = <0x70>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++
++				i2c@0 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <0>;
++				};
++				i2c@1 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <1>;
++				};
++				i2c@2 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <2>;
++				};
++				i2c@3 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <3>;
++				};
++				i2c@4 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <4>;
++				};
++				i2c@5 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <5>;
++				};
++				i2c@6 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <6>;
++				};
++				i2c@7 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					reg = <7>;
++				};
++			};
++		};
++	};
++
++	__overrides__ {
++		pca9542 = <0>, "+0";
++		pca9545 = <0>, "+1";
++		pca9548 = <0>, "+2";
++
++		addr =  <&pca9542>,"reg:0",
++			<&pca9545>,"reg:0",
++			<&pca9548>,"reg:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-pwm-pca9685a-overlay.dts b/arch/arm/boot/dts/overlays/i2c-pwm-pca9685a-overlay.dts
+new file mode 100644
+index 000000000000..9bb16465a50e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-pwm-pca9685a-overlay.dts
+@@ -0,0 +1,26 @@
++// Definitions for NXP PCA9685A I2C PWM controller on ARM I2C bus.
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pca: pca@40 {
++				compatible = "nxp,pca9685-pwm";
++				#pwm-cells = <2>;
++				reg = <0x40>;
++				status = "okay";
++			};
++		};
++	};
++	__overrides__ {
++		addr = <&pca>,"reg:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi b/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi
+new file mode 100644
+index 000000000000..7f749fc2d802
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi
+@@ -0,0 +1,323 @@
++// Definitions for several I2C based Real Time Clocks
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			abx80x: abx80x@69 {
++				compatible = "abracon,abx80x";
++				reg = <0x69>;
++				abracon,tc-diode = "standard";
++				abracon,tc-resistor = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ds1307: ds1307@68 {
++				compatible = "dallas,ds1307";
++				reg = <0x68>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ds1339: ds1339@68 {
++				compatible = "dallas,ds1339";
++				trickle-resistor-ohms = <0>;
++				reg = <0x68>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ds3231: ds3231@68 {
++				compatible = "maxim,ds3231";
++				reg = <0x68>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp7940x: mcp7940x@6f {
++				compatible = "microchip,mcp7940x";
++				reg = <0x6f>;
++			};
++		};
++	};
++
++	fragment@5 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp7941x: mcp7941x@6f {
++				compatible = "microchip,mcp7941x";
++				reg = <0x6f>;
++			};
++		};
++	};
++
++	fragment@6 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pcf2127@51 {
++				compatible = "nxp,pcf2127";
++				reg = <0x51>;
++			};
++		};
++	};
++
++	fragment@7 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pcf8523: pcf8523@68 {
++				compatible = "nxp,pcf8523";
++				reg = <0x68>;
++			};
++		};
++	};
++
++	fragment@8 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pcf8563: pcf8563@51 {
++				compatible = "nxp,pcf8563";
++				reg = <0x51>;
++			};
++		};
++	};
++
++	fragment@9 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			m41t62: m41t62@68 {
++				compatible = "st,m41t62";
++				reg = <0x68>;
++			};
++		};
++	};
++
++	fragment@10 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			rv3028: rv3028@52 {
++				compatible = "microcrystal,rv3028";
++				reg = <0x52>;
++			};
++		};
++	};
++
++	fragment@11 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pcf2129@51 {
++				compatible = "nxp,pcf2129";
++				reg = <0x51>;
++			};
++		};
++	};
++
++	fragment@12 {
++		target = <&i2cbus>;
++	       __dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pcf85363@51 {
++				compatible = "nxp,pcf85363";
++				reg = <0x51>;
++			};
++		};
++	};
++
++	fragment@13 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			rv1805: rv1805@69 {
++				compatible = "microcrystal,rv1805";
++				reg = <0x69>;
++				abracon,tc-diode = "standard";
++				abracon,tc-resistor = <0>;
++			};
++		};
++	};
++
++	fragment@14 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sd3078: sd3078@32 {
++				compatible = "whwave,sd3078";
++				reg = <0x32>;
++			};
++		};
++	};
++
++	fragment@15 {
++		target = <&i2cbus>;
++	       __dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pcf85063@51 {
++				compatible = "nxp,pcf85063";
++				reg = <0x51>;
++			};
++		};
++	};
++
++	fragment@16 {
++		target = <&i2cbus>;
++	       __dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pcf85063a@51 {
++				compatible = "nxp,pcf85063a";
++				reg = <0x51>;
++			};
++		};
++	};
++
++	fragment@17 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ds1340: ds1340@68 {
++				compatible = "dallas,ds1340";
++				trickle-resistor-ohms = <0>;
++				reg = <0x68>;
++			};
++		};
++	};
++
++	fragment@18 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			s35390a: s35390a@30 {
++				compatible = "ablic,s35390a";
++				reg = <0x30>;
++			};
++		};
++	};
++
++	fragment@19 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			bq32000: bq32000@68 {
++				compatible = "ti,bq32000";
++				trickle-resistor-ohms = <0>;
++				reg = <0x68>;
++			};
++		};
++	};
++
++
++	__overrides__ {
++		abx80x = <0>,"+0";
++		ds1307 = <0>,"+1";
++		ds1339 = <0>,"+2";
++		ds1340 = <0>,"+17";
++		ds3231 = <0>,"+3";
++		mcp7940x = <0>,"+4";
++		mcp7941x = <0>,"+5";
++		pcf2127 = <0>,"+6";
++		pcf8523 = <0>,"+7";
++		pcf8563 = <0>,"+8";
++		m41t62 = <0>,"+9";
++		rv3028 = <0>,"+10";
++		pcf2129 = <0>,"+11";
++		pcf85363 = <0>,"+12";
++		rv1805 = <0>,"+13";
++		sd3078 = <0>,"+14";
++		pcf85063 = <0>,"+15";
++		pcf85063a = <0>,"+16";
++		s35390a = <0>,"+18";
++		bq32000 = <0>,"+19";
++
++		addr = <&abx80x>, "reg:0",
++		       <&ds1307>, "reg:0",
++		       <&ds1339>, "reg:0",
++		       <&ds3231>, "reg:0",
++		       <&mcp7940x>, "reg:0",
++		       <&mcp7941x>, "reg:0",
++		       <&pcf8523>, "reg:0",
++		       <&pcf8563>, "reg:0",
++		       <&m41t62>, "reg:0",
++		       <&rv1805>, "reg:0",
++		       <&s35390a>, "reg:0";
++		trickle-diode-disable = <&bq32000>,"trickle-diode-disable?";
++		trickle-diode-type = <&abx80x>,"abracon,tc-diode",
++				     <&rv1805>,"abracon,tc-diode";
++		trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
++					<&ds1340>,"trickle-resistor-ohms:0",
++					<&abx80x>,"abracon,tc-resistor:0",
++					<&rv3028>,"trickle-resistor-ohms:0",
++					<&rv1805>,"abracon,tc-resistor:0",
++					<&bq32000>,"abracon,tc-resistor:0";
++		backup-switchover-mode = <&rv3028>,"backup-switchover-mode:0";
++		wakeup-source = <&ds1339>,"wakeup-source?",
++				<&ds3231>,"wakeup-source?",
++				<&mcp7940x>,"wakeup-source?",
++				<&mcp7941x>,"wakeup-source?",
++				<&m41t62>,"wakeup-source?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts b/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
+new file mode 100644
+index 000000000000..c83480c1c327
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
+@@ -0,0 +1,31 @@
++// Definitions for several I2C based Real Time Clocks
++// Available through i2c-gpio
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++#include "i2c-rtc-common.dtsi"
++
++/ {
++	fragment@100 {
++		target-path = "/";
++		__overlay__ {
++			i2cbus: i2c-gpio-rtc@0 {
++				compatible = "i2c-gpio";
++				gpios = <&gpio 23 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* sda */
++					 &gpio 24 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* scl */
++					>;
++				i2c-gpio,delay-us = <2>;        /* ~100 kHz */
++				#address-cells = <1>;
++				#size-cells = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		i2c_gpio_sda = <&i2cbus>,"gpios:4";
++		i2c_gpio_scl = <&i2cbus>,"gpios:16";
++		i2c_gpio_delay_us = <&i2cbus>,"i2c-gpio,delay-us:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+new file mode 100644
+index 000000000000..1eae9e1a5c96
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
+@@ -0,0 +1,34 @@
++// Definitions for several I2C based Real Time Clocks
++/dts-v1/;
++/plugin/;
++
++#include "i2c-rtc-common.dtsi"
++
++/ {
++	frag100: fragment@100 {
++		target = <&i2c_arm>;
++		i2cbus: __overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@101 {
++		target = <&i2c0if>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	fragment@102 {
++		target = <&i2c0mux>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		i2c0 = <&frag100>, "target:0=",<&i2c0>;
++		i2c_csi_dsi = <&frag100>, "target:0=",<&i2c_csi_dsi>,
++			      <0>,"+101+102";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
+new file mode 100755
+index 000000000000..b05b0fa91942
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
+@@ -0,0 +1,320 @@
++// Definitions for I2C based sensors using the Industrial IO or HWMON interface.
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			bme280: bme280@76 {
++				compatible = "bosch,bme280";
++				reg = <0x76>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			bmp085: bmp085@77 {
++				compatible = "bosch,bmp085";
++				reg = <0x77>;
++				default-oversampling = <3>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			bmp180: bmp180@77 {
++				compatible = "bosch,bmp180";
++				reg = <0x77>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			bmp280: bmp280@76 {
++				compatible = "bosch,bmp280";
++				reg = <0x76>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			htu21: htu21@40 {
++				compatible = "htu21";
++				reg = <0x40>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@5 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			lm75: lm75@4f {
++				compatible = "lm75";
++				reg = <0x4f>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@6 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			si7020: si7020@40 {
++				compatible = "si7020";
++				reg = <0x40>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@7 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			tmp102: tmp102@48 {
++				compatible = "ti,tmp102";
++				reg = <0x48>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@8 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			hdc100x: hdc100x@40 {
++				compatible = "hdc100x";
++				reg = <0x40>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@9 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			tsl4531: tsl4531@29 {
++				compatible = "tsl4531";
++				reg = <0x29>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@10 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			veml6070: veml6070@38 {
++				compatible = "veml6070";
++				reg = <0x38>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@11 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sht3x: sht3x@44 {
++				compatible = "sht3x";
++				reg = <0x44>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@12 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ds1621: ds1621@48 {
++				compatible = "ds1621";
++				reg = <0x48>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@13 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			max17040: max17040@36 {
++				compatible = "maxim,max17040";
++				reg = <0x36>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@14 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			bme680: bme680@76 {
++				compatible = "bosch,bme680";
++				reg = <0x76>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@15 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sps30: sps30@69 {
++				compatible = "sensirion,sps30";
++				reg = <0x69>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@16 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sgp30: sgp30@58 {
++				compatible = "sensirion,sgp30";
++				reg = <0x58>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@17 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ccs811: ccs811@5b {
++				compatible = "ccs811";
++				reg = <0x5b>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@18 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			bh1750: bh1750@23 {
++				compatible = "bh1750";
++				reg = <0x23>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		addr =  <&bme280>,"reg:0", <&bmp280>,"reg:0", <&tmp102>,"reg:0",
++			<&lm75>,"reg:0", <&hdc100x>,"reg:0", <&sht3x>,"reg:0",
++			<&ds1621>,"reg:0", <&bme680>,"reg:0", <&ccs811>,"reg:0",
++			<&bh1750>,"reg:0";
++		bme280 = <0>,"+0";
++		bmp085 = <0>,"+1";
++		bmp180 = <0>,"+2";
++		bmp280 = <0>,"+3";
++		htu21 = <0>,"+4";
++		lm75 = <0>,"+5";
++		lm75addr = <&lm75>,"reg:0";
++		si7020 = <0>,"+6";
++		tmp102 = <0>,"+7";
++		hdc100x = <0>,"+8";
++		tsl4531 = <0>,"+9";
++		veml6070 = <0>,"+10";
++		sht3x = <0>,"+11";
++		ds1621 = <0>,"+12";
++		max17040 = <0>,"+13";
++		bme680 = <0>,"+14";
++		sps30 = <0>,"+15";
++		sgp30 = <0>,"+16";
++		ccs811 = <0>, "+17";
++		bh1750 = <0>, "+18";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c0-overlay.dts b/arch/arm/boot/dts/overlays/i2c0-overlay.dts
+new file mode 100644
+index 000000000000..46bf1bf2dc5c
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c0-overlay.dts
+@@ -0,0 +1,83 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++			pinctrl-names = "default";
++			pinctrl-0 = <&i2c0_pins>;
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c0_pins>;
++		pins1: __overlay__ {
++			brcm,pins = <0 1>;
++			brcm,function = <4>; /* alt0 */
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0_pins>;
++		pins2: __dormant__ {
++			brcm,pins = <28 29>;
++			brcm,function = <4>; /* alt0 */
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c0_pins>;
++		pins3: __dormant__ {
++			brcm,pins = <44 45>;
++			brcm,function = <5>; /* alt1 */
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0_pins>;
++		pins4: __dormant__ {
++			brcm,pins = <46 47>;
++			brcm,function = <4>; /* alt0 */
++		};
++	};
++
++	fragment@5 {
++		target = <&i2c0>;
++		__dormant__ {
++			compatible = "brcm,bcm2708-i2c";
++		};
++	};
++
++	fragment@6 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@7 {
++		target-path = "/aliases";
++		__overlay__ {
++			i2c0 = "/soc/i2c@7e205000";
++		};
++	};
++
++	fragment@8 {
++		target-path = "/__symbols__";
++		__overlay__ {
++			i2c0 = "/soc/i2c@7e205000";
++		};
++	};
++
++	__overrides__ {
++		pins_0_1   = <0>,"+1-2-3-4";
++		pins_28_29 = <0>,"-1+2-3-4";
++		pins_44_45 = <0>,"-1-2+3-4";
++		pins_46_47 = <0>,"-1-2-3+4";
++		combine = <0>, "!5";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c1-overlay.dts b/arch/arm/boot/dts/overlays/i2c1-overlay.dts
+new file mode 100644
+index 000000000000..addaed73e665
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c1-overlay.dts
+@@ -0,0 +1,44 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c1>;
++		__overlay__ {
++			status = "okay";
++			pinctrl-names = "default";
++			pinctrl-0 = <&i2c1_pins>;
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1_pins>;
++		pins1: __overlay__ {
++			brcm,pins = <2 3>;
++			brcm,function = <4>; /* alt 0 */
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1_pins>;
++		pins2: __dormant__ {
++			brcm,pins = <44 45>;
++			brcm,function = <6>; /* alt 2 */
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c1>;
++		__dormant__ {
++			compatible = "brcm,bcm2708-i2c";
++		};
++	};
++
++	__overrides__ {
++		pins_2_3   = <0>,"=1!2";
++		pins_44_45 = <0>,"!1=2";
++		combine = <0>, "!3";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c3-overlay.dts b/arch/arm/boot/dts/overlays/i2c3-overlay.dts
+new file mode 100644
+index 000000000000..e24a1df21f99
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c3-overlay.dts
+@@ -0,0 +1,36 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&i2c3>;
++		frag0: __overlay__ {
++			status = "okay";
++			pinctrl-names = "default";
++			pinctrl-0 = <&i2c3_pins>;
++			clock-frequency = <100000>;
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c3_pins>;
++		__dormant__ {
++			brcm,pins = <2 3>;
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c3_pins>;
++		__overlay__ {
++			brcm,pins = <4 5>;
++		};
++	};
++
++	__overrides__ {
++		pins_2_3 = <0>,"=1!2";
++		pins_4_5 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c4-overlay.dts b/arch/arm/boot/dts/overlays/i2c4-overlay.dts
+new file mode 100644
+index 000000000000..14c7f4d1da4c
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c4-overlay.dts
+@@ -0,0 +1,36 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&i2c4>;
++		frag0: __overlay__ {
++			status = "okay";
++			pinctrl-names = "default";
++			pinctrl-0 = <&i2c4_pins>;
++			clock-frequency = <100000>;
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c4_pins>;
++		__dormant__ {
++			brcm,pins = <6 7>;
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c4_pins>;
++		__overlay__ {
++			brcm,pins = <8 9>;
++		};
++	};
++
++	__overrides__ {
++		pins_6_7 = <0>,"=1!2";
++		pins_8_9 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c5-overlay.dts b/arch/arm/boot/dts/overlays/i2c5-overlay.dts
+new file mode 100644
+index 000000000000..7953621112de
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c5-overlay.dts
+@@ -0,0 +1,36 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&i2c5>;
++		frag0: __overlay__ {
++			status = "okay";
++			pinctrl-names = "default";
++			pinctrl-0 = <&i2c5_pins>;
++			clock-frequency = <100000>;
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c5_pins>;
++		__dormant__ {
++			brcm,pins = <10 11>;
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c5_pins>;
++		__overlay__ {
++			brcm,pins = <12 13>;
++		};
++	};
++
++	__overrides__ {
++		pins_10_11 = <0>,"=1!2";
++		pins_12_13 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2c6-overlay.dts b/arch/arm/boot/dts/overlays/i2c6-overlay.dts
+new file mode 100644
+index 000000000000..555305a7ee1f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c6-overlay.dts
+@@ -0,0 +1,36 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&i2c6>;
++		frag0: __overlay__ {
++			status = "okay";
++			pinctrl-names = "default";
++			pinctrl-0 = <&i2c6_pins>;
++			clock-frequency = <100000>;
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c6_pins>;
++		__dormant__ {
++			brcm,pins = <0 1>;
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c6_pins>;
++		__overlay__ {
++			brcm,pins = <22 23>;
++		};
++	};
++
++	__overrides__ {
++		pins_0_1 = <0>,"=1!2";
++		pins_22_23 = <0>,"!1=2";
++		baudrate = <&frag0>, "clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts b/arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
+new file mode 100644
+index 000000000000..cf43094c6ff4
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
+@@ -0,0 +1,18 @@
++/*
++ * Device tree overlay to move i2s to gpio 28 to 31 on CM
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s_pins>;
++		__overlay__ {
++			brcm,pins = <28 29 30 31>;
++			brcm,function = <6>; /* alt2 */
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ilitek251x-overlay.dts b/arch/arm/boot/dts/overlays/ilitek251x-overlay.dts
+new file mode 100644
+index 000000000000..551aba591d26
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ilitek251x-overlay.dts
+@@ -0,0 +1,45 @@
++// Device tree overlay for I2C connected Ilitek multiple touch controller
++/dts-v1/;
++/plugin/;
++
++ / {
++	compatible = "brcm,bcm2835";
++
++ 	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {		
++			ili251x_pins: ili251x_pins {
++				brcm,pins = <4>; // interrupt
++				brcm,function = <0>; // in
++				brcm,pull = <2>; // pull-up //
++			};
++		};
++	};
++
++ 	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++ 			ili251x: ili251x@41 {
++				compatible = "ilitek,ili251x";
++				reg = <0x41>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&ili251x_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 8>; // high-to-low edge triggered
++				touchscreen-size-x = <16384>;
++				touchscreen-size-y = <9600>;
++			};
++		};
++	};
++
++ 	__overrides__ {
++		interrupt = <&ili251x_pins>,"brcm,pins:0",
++			<&ili251x>,"interrupts:0";
++		sizex = <&ili251x>,"touchscreen-size-x:0";
++		sizey = <&ili251x>,"touchscreen-size-y:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/imx219-overlay.dts b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+new file mode 100644
+index 000000000000..0c065bf09f54
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+@@ -0,0 +1,115 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for IMX219 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			imx219: imx219@10 {
++				compatible = "sony,imx219";
++				reg = <0x10>;
++				status = "okay";
++
++				clocks = <&imx219_clk>;
++				clock-names = "xclk";
++
++				VANA-supply = <&cam1_reg>;	/* 2.8v */
++				VDIG-supply = <&imx219_vdig>;	/* 1.8v */
++				VDDL-supply = <&imx219_vddl>;	/* 1.2v */
++
++				rotation = <180>;
++				orientation = <2>;
++
++				port {
++					imx219_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <456000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&imx219_0>;
++					clock-lanes = <0>;
++					data-lanes = <1 2>;
++					clock-noncontinuous;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path="/";
++		__overlay__ {
++			imx219_vdig: fixedregulator@1 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx219_vdig";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++			};
++			imx219_vddl: fixedregulator@2 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx219_vddl";
++				regulator-min-microvolt = <1200000>;
++				regulator-max-microvolt = <1200000>;
++			};
++
++			imx219_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24000000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&cam1_reg>;
++		__overlay__ {
++			status = "okay";
++			regulator-name = "imx219_vana";
++			regulator-min-microvolt = <2800000>;
++			regulator-max-microvolt = <2800000>;
++		};
++	};
++
++	__overrides__ {
++		rotation = <&imx219>,"rotation:0";
++		orientation = <&imx219>,"orientation:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/imx290-overlay.dts b/arch/arm/boot/dts/overlays/imx290-overlay.dts
+new file mode 100644
+index 000000000000..e536aa7f9e33
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx290-overlay.dts
+@@ -0,0 +1,32 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for IMX290 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include "imx290_327-overlay.dtsi"
++
++/{
++	compatible = "brcm,bcm2835";
++
++	// Fragment numbers deliberately high to avoid conflicts with the
++	// included imx290_327 overlay file.
++
++	fragment@101 {
++		target = <&imx290>;
++		__overlay__ {
++			compatible = "sony,imx290";
++		};
++	};
++
++	fragment@102 {
++		target = <&imx290>;
++		__dormant__ {
++			compatible = "sony,imx290-mono";
++		};
++	};
++
++	__overrides__ {
++		mono = <0>, "-101+102";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi b/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
+new file mode 100644
+index 000000000000..d4a5ed6dbbcf
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
+@@ -0,0 +1,144 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Partial definitions for IMX290 or IMX327 camera module on VC I2C bus
++// The compatible string should be set in an overlay that then includes this one
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			imx290: imx290@1a {
++				reg = <0x1a>;
++				status = "okay";
++
++				clocks = <&imx290_clk>;
++				clock-names = "xclk";
++				clock-frequency = <37125000>;
++
++				rotation = <0>;
++				orientation = <2>;
++
++				vdda-supply = <&cam1_reg>;	/* 2.8v */
++				vdddo-supply = <&imx290_vdddo>;	/* 1.8v */
++				vddd-supply = <&imx290_vddd>;	/* 1.5v */
++
++				port {
++					imx290_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&imx290_0>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path="/";
++		__overlay__ {
++			imx290_vdddo: fixedregulator@1 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx290_vdddo";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++			};
++			imx290_vddd: fixedregulator@2 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx290_vddd";
++				regulator-min-microvolt = <1500000>;
++				regulator-max-microvolt = <1500000>;
++			};
++
++			imx290_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <37125000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&cam1_reg>;
++		__overlay__ {
++			status = "okay";
++			regulator-name = "imx290_vdda";
++			regulator-min-microvolt = <2800000>;
++			regulator-max-microvolt = <2800000>;
++		};
++	};
++
++	fragment@6 {
++		target = <&imx290_0>;
++		__overlay__ {
++			data-lanes = <1 2>;
++			link-frequencies =
++				/bits/ 64 <445500000 297000000>;
++		};
++	};
++
++	fragment@7 {
++		target = <&imx290_0>;
++		__dormant__ {
++			data-lanes = <1 2 3 4>;
++			link-frequencies =
++				/bits/ 64 <222750000 148500000>;
++		};
++	};
++
++	fragment@8 {
++		target = <&csi1_ep>;
++		__overlay__ {
++			data-lanes = <1 2>;
++		};
++	};
++
++	fragment@9 {
++		target = <&csi1_ep>;
++		__dormant__ {
++			data-lanes = <1 2 3 4>;
++		};
++	};
++
++	__overrides__ {
++		4lane = <0>, "-6+7-8+9";
++		clock-frequency = <&imx290_clk>,"clock-frequency:0",
++				  <&imx290>,"clock-frequency:0";
++		rotation = <&imx290>,"rotation:0";
++		orientation = <&imx290>,"orientation:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/imx378-overlay.dts b/arch/arm/boot/dts/overlays/imx378-overlay.dts
+new file mode 100644
+index 000000000000..74c7288d12f5
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx378-overlay.dts
+@@ -0,0 +1,10 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for IMX378 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include "imx477_378-overlay.dtsi"
++
++&imx477 {
++	compatible = "sony,imx378";
++};
+diff --git a/arch/arm/boot/dts/overlays/imx477-overlay.dts b/arch/arm/boot/dts/overlays/imx477-overlay.dts
+new file mode 100644
+index 000000000000..ca315d120e6b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx477-overlay.dts
+@@ -0,0 +1,10 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for IMX477 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include "imx477_378-overlay.dtsi"
++
++&imx477 {
++	compatible = "sony,imx477";
++};
+diff --git a/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi b/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
+new file mode 100644
+index 000000000000..bb9a9acdbbd7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
+@@ -0,0 +1,110 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for IMX477 camera module on VC I2C bus
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			imx477: imx477@1a {
++				reg = <0x1a>;
++				status = "okay";
++
++				clocks = <&imx477_clk>;
++				clock-names = "xclk";
++
++				VANA-supply = <&cam1_reg>;	/* 2.8v */
++				VDIG-supply = <&imx477_vdig>;	/* 1.05v */
++				VDDL-supply = <&imx477_vddl>;	/* 1.8v */
++
++				rotation = <180>;
++				orientation = <2>;
++
++				port {
++					imx477_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <450000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&imx477_0>;
++					clock-lanes = <0>;
++					data-lanes = <1 2>;
++					clock-noncontinuous;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path="/";
++		__overlay__ {
++			imx477_vdig: fixedregulator@0 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx477_vdig";
++				regulator-min-microvolt = <1050000>;
++				regulator-max-microvolt = <1050000>;
++			};
++			imx477_vddl: fixedregulator@1 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx477_vddl";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++			};
++			imx477_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24000000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&cam1_reg>;
++		__overlay__ {
++			status = "okay";
++			regulator-name = "imx477_vana";
++			startup-delay-us = <300000>;
++			regulator-min-microvolt = <2800000>;
++			regulator-max-microvolt = <2800000>;
++		};
++	};
++
++	__overrides__ {
++		rotation = <&imx477>,"rotation:0";
++		orientation = <&imx477>,"orientation:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts b/arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts
+new file mode 100644
+index 000000000000..9110f5d34298
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts
+@@ -0,0 +1,42 @@
++// Definitions for IQaudIO CODEC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			da2713@1a {
++				#sound-dai-cells = <0>;
++				compatible = "dlg,da7213";
++				reg = <0x1a>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		iqaudio_dac: __overlay__ {
++			compatible = "iqaudio,iqaudio-codec";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts b/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
+new file mode 100644
+index 000000000000..24073cadd0ef
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
+@@ -0,0 +1,46 @@
++// Definitions for IQaudIO DAC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4c>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		frag2: __overlay__ {
++			compatible = "iqaudio,iqaudio-dac";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain = <&frag2>,"iqaudio,24db_digital_gain?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts b/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
+new file mode 100644
+index 000000000000..7c70b25e58d7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
+@@ -0,0 +1,49 @@
++// Definitions for IQaudIO DAC+
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4c>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		iqaudio_dac: __overlay__ {
++			compatible = "iqaudio,iqaudio-dac";
++			i2s-controller = <&i2s>;
++			mute-gpios = <&gpio 22 0>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain = <&iqaudio_dac>,"iqaudio,24db_digital_gain?";
++		auto_mute_amp = <&iqaudio_dac>,"iqaudio-dac,auto-mute-amp?";
++		unmute_amp = <&iqaudio_dac>,"iqaudio-dac,unmute-amp?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts b/arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts
+new file mode 100644
+index 000000000000..ee54095c869b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts
+@@ -0,0 +1,47 @@
++// Definitions for IQAudIO Digi WM8804 audio board
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8804@3b {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				status = "okay";
++				DVDD-supply = <&vdd_3v3_reg>;
++				PVDD-supply = <&vdd_3v3_reg>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		wm8804_digi: __overlay__ {
++			compatible = "iqaudio,wm8804-digi";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		card_name = <&wm8804_digi>,"wm8804-digi,card-name";
++		dai_name = <&wm8804_digi>,"wm8804-digi,dai-name";
++		dai_stream_name = <&wm8804_digi>,"wm8804-digi,dai-stream-name";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/irs1125-overlay.dts b/arch/arm/boot/dts/overlays/irs1125-overlay.dts
+new file mode 100644
+index 000000000000..e926e18e71fc
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/irs1125-overlay.dts
+@@ -0,0 +1,85 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for IRS1125 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			irs1125: irs1125@3D {
++				compatible = "infineon,irs1125";
++				reg = <0x3D>;
++				status = "okay";
++
++				pwdn-gpios = <&gpio 5 0>;
++				clocks = <&irs1125_clk>;
++
++				port {
++					irs1125_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <297000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&irs1125_0>;
++					data-lanes = <1 2>;
++					clock-noncontinuous;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target-path="/__overrides__";
++		__overlay__ {
++			cam0-pwdn-ctrl = <&irs1125>,"pwdn-gpios:0";
++			cam0-pwdn      = <&irs1125>,"pwdn-gpios:4";
++		};
++	};
++
++	fragment@5 {
++		target-path = "/";
++		__overlay__ {
++			irs1125_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <26000000>;
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts b/arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
+new file mode 100644
+index 000000000000..585c7dbcdf7f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
+@@ -0,0 +1,309 @@
++// Overlay for JEDEC SPI-NOR Flash Devices (aka m25p80)
++
++// dtparams:
++//     flash-spi<n>-<m>        - Enables flash device on SPI<n>, CS#<m>.
++//     flash-fastr-spi<n>-<m>  - Enables flash device with fast read capability on SPI<n>, CS#<m>.
++//
++// If devices are present on SPI1 or SPI2, those interfaces must be enabled with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++//
++// Example: A single flash device with fast read capability on SPI0, CS#0:
++// dtoverlay=jedec-spi-nor:flash-fastr-spi0-0
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	// disable spi-dev on spi0.0
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi0.1
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi1.0
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi1.1
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi1.2
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi2.0
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi2.1
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi2.2
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// enable flash on spi0.0
++	fragment@8 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_00: spi_nor@0 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <0>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// enable flash on spi0.1
++	fragment@9 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_01: spi_nor@1 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <1>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// enable flash on spi1.0
++	fragment@10 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_10: spi_nor@0 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <0>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// enable flash on spi1.1
++	fragment@11 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_11: spi_nor@1 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <1>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// enable flash on spi1.2
++	fragment@12 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_12: spi_nor@2 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <2>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// enable flash on spi2.0
++	fragment@13 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_20: spi_nor@0 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <0>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// enable flash on spi2.1
++	fragment@14 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_21: spi_nor@1 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <1>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// enable flash on spi2.2
++	fragment@15 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			spi_nor_22: spi_nor@2 {
++				#address-cells = <1>;
++				#size-cells = <1>;
++				compatible = "jedec,spi-nor";
++				reg = <2>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	// Enable fast read for device on spi0.0.
++	// Use default active low interrupt signalling.
++	fragment@16 {
++		target = <&spi_nor_00>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	// Enable fast read for device on spi0.1.
++	// Use default active low interrupt signalling.
++	fragment@17 {
++		target = <&spi_nor_01>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	// Enable fast read for device on spi1.0.
++	// Use default active low interrupt signalling.
++	fragment@18 {
++		target = <&spi_nor_10>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	// Enable fast read for device on spi1.1.
++	// Use default active low interrupt signalling.
++	fragment@19 {
++		target = <&spi_nor_11>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	// Enable fast read for device on spi1.2.
++	// Use default active low interrupt signalling.
++	fragment@20 {
++		target = <&spi_nor_12>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	// Enable fast read for device on spi2.0.
++	// Use default active low interrupt signalling.
++	fragment@21 {
++		target = <&spi_nor_20>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	// Enable fast read for device on spi2.1.
++	// Use default active low interrupt signalling.
++	fragment@22 {
++		target = <&spi_nor_21>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	// Enable fast read for device on spi2.2.
++	// Use default active low interrupt signalling.
++	fragment@23 {
++		target = <&spi_nor_22>;
++		__dormant__ {
++			m25p,fast-read;
++		};
++	};
++
++	__overrides__ {
++		flash-spi0-0       = <0>,"+0+8";
++		flash-spi0-1       = <0>,"+1+9";
++		flash-spi1-0       = <0>,"+2+10";
++		flash-spi1-1       = <0>,"+3+11";
++		flash-spi1-2       = <0>,"+4+12";
++		flash-spi2-0       = <0>,"+5+13";
++		flash-spi2-1       = <0>,"+6+14";
++		flash-spi2-2       = <0>,"+7+15";
++		flash-fastr-spi0-0 = <0>,"+0+8+16";
++		flash-fastr-spi0-1 = <0>,"+1+9+17";
++		flash-fastr-spi1-0 = <0>,"+2+10+18";
++		flash-fastr-spi1-1 = <0>,"+3+11+19";
++		flash-fastr-spi1-2 = <0>,"+4+12+20";
++		flash-fastr-spi2-0 = <0>,"+5+13+21";
++		flash-fastr-spi2-1 = <0>,"+6+14+22";
++		flash-fastr-spi2-2 = <0>,"+7+15+23";
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/justboom-both-overlay.dts b/arch/arm/boot/dts/overlays/justboom-both-overlay.dts
+new file mode 100644
+index 000000000000..9c42670631c0
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/justboom-both-overlay.dts
+@@ -0,0 +1,65 @@
++// SPDX-License-Identifier: GPL-2.0
++// Definitions for JustBoom Both (Digi+DAC)
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8804@3b {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				PVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		frag3: __overlay__ {
++			compatible = "justboom,justboom-both";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain = <&frag3>,"justboom,24db_digital_gain?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/justboom-dac-overlay.dts b/arch/arm/boot/dts/overlays/justboom-dac-overlay.dts
+new file mode 100644
+index 000000000000..d00515dca419
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/justboom-dac-overlay.dts
+@@ -0,0 +1,46 @@
++// Definitions for JustBoom DAC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pcm5122@4d {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5122";
++				reg = <0x4d>;
++				AVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		frag2: __overlay__ {
++			compatible = "justboom,justboom-dac";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		24db_digital_gain = <&frag2>,"justboom,24db_digital_gain?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/justboom-digi-overlay.dts b/arch/arm/boot/dts/overlays/justboom-digi-overlay.dts
+new file mode 100644
+index 000000000000..e73336029c54
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/justboom-digi-overlay.dts
+@@ -0,0 +1,41 @@
++// Definitions for JustBoom Digi
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8804@3b {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				PVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "justboom,justboom-digi";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ltc294x-overlay.dts b/arch/arm/boot/dts/overlays/ltc294x-overlay.dts
+new file mode 100644
+index 000000000000..6d971f3649ca
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ltc294x-overlay.dts
+@@ -0,0 +1,86 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ltc2941: ltc2941@64 {
++				compatible = "lltc,ltc2941";
++				reg = <0x64>;
++				lltc,resistor-sense = <50>;
++				lltc,prescaler-exponent = <7>; 
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ltc2942: ltc2942@64 {
++				compatible = "lltc,ltc2942";
++				reg = <0x64>;
++				lltc,resistor-sense = <50>;
++				lltc,prescaler-exponent = <7>; 
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ltc2943: ltc2943@64 {
++				compatible = "lltc,ltc2943";
++				reg = <0x64>;
++				lltc,resistor-sense = <50>;
++				lltc,prescaler-exponent = <7>; 
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ltc2944: ltc2944@64 {
++				compatible = "lltc,ltc2944";
++				reg = <0x64>;
++				lltc,resistor-sense = <50>;
++				lltc,prescaler-exponent = <7>; 
++			};
++		};
++	};
++
++	__overrides__ {
++		ltc2941 = <0>,"+0";
++		ltc2942 = <0>,"+1";
++		ltc2943 = <0>,"+2";
++		ltc2944 = <0>,"+3";
++		resistor-sense = <&ltc2941>, "lltc,resistor-sense:0",
++			         <&ltc2942>, "lltc,resistor-sense:0",
++				 <&ltc2943>, "lltc,resistor-sense:0",
++				 <&ltc2944>, "lltc,resistor-sense:0";
++		prescaler-exponent = <&ltc2941>, "lltc,prescaler-exponent:0",
++			         <&ltc2942>, "lltc,prescaler-exponent:0",
++				 <&ltc2943>, "lltc,prescaler-exponent:0",
++				 <&ltc2944>, "lltc,prescaler-exponent:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/max98357a-overlay.dts b/arch/arm/boot/dts/overlays/max98357a-overlay.dts
+new file mode 100644
+index 000000000000..9e2afb05b7cb
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/max98357a-overlay.dts
+@@ -0,0 +1,84 @@
++// Overlay for Maxim MAX98357A audio DAC
++
++// dtparams:
++//     no-sdmode  - SD_MODE pin not managed by driver.
++//     sdmode-pin - Specify GPIO pin to which SD_MODE is connected (default 4).
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	/* Enable I2S */
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	/* DAC whose SD_MODE pin is managed by driver (via GPIO pin) */
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			max98357a_dac: max98357a {
++				compatible = "maxim,max98357a";
++				#sound-dai-cells = <0>;
++				sdmode-gpios = <&gpio 4 0>;   /* 2nd word overwritten by sdmode-pin parameter */
++				status = "okay";
++			};
++		};
++	};
++
++	/* DAC whose SD_MODE pin is not managed by driver */
++	fragment@2 {
++		target-path = "/";
++		__dormant__ {
++			max98357a_nsd: max98357a {
++				compatible = "maxim,max98357a";
++				#sound-dai-cells = <0>;
++				status = "okay";
++			};
++		};
++	};
++
++	/* Soundcard connecting I2S to DAC with SD_MODE */
++	fragment@3 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "simple-audio-card";
++			simple-audio-card,format = "i2s";
++			simple-audio-card,name = "MAX98357A";
++			status = "okay";
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++			};
++			simple-audio-card,codec {
++				sound-dai = <&max98357a_dac>;
++			};
++		};
++	};
++
++	/* Soundcard connecting I2S to DAC without SD_MODE */
++	fragment@4 {
++		target = <&sound>;
++		__dormant__ {
++			compatible = "simple-audio-card";
++			simple-audio-card,format = "i2s";
++			simple-audio-card,name = "MAX98357A";
++			status = "okay";
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++			};
++			simple-audio-card,codec {
++				sound-dai = <&max98357a_nsd>;
++			};
++		};
++	};
++
++	__overrides__ {
++		no-sdmode  = <0>,"-1+2-3+4";
++		sdmode-pin = <&max98357a_dac>,"sdmode-gpios:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/maxtherm-overlay.dts b/arch/arm/boot/dts/overlays/maxtherm-overlay.dts
+new file mode 100644
+index 000000000000..9964e246c14f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/maxtherm-overlay.dts
+@@ -0,0 +1,186 @@
++/*
++ * Universal device tree overlay for SPI devices
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/iio/temperature/thermocouple.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	maxfrag: fragment@8 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			max: maxtherm@0 {
++				compatible = "maxim,max6675";
++				reg = <0>;
++				spi-max-frequency = <500000>;
++			};
++		};
++	};
++
++	fragment@9 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31855e", "maxim,max31855";
++		};
++	};
++
++	fragment@10 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31855j", "maxim,max31855";
++		};
++	};
++
++	fragment@11 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31855k", "maxim,max31855";
++		};
++	};
++
++	fragment@12 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31855n", "maxim,max31855";
++		};
++	};
++
++	fragment@13 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31855r", "maxim,max31855";
++		};
++	};
++
++	fragment@14 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31855s", "maxim,max31855";
++		};
++	};
++
++	fragment@15 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31855t", "maxim,max31855";
++		};
++	};
++
++	fragment@16 {
++		target = <&max>;
++		__dormant__ {
++			compatible = "maxim,max31856";
++			spi-cpha;
++			thermocouple-type = <THERMOCOUPLE_TYPE_K>;
++		};
++	};
++
++	__overrides__ {
++		spi0-0 = <0>, "+0",
++			 <&maxfrag>,"target:0=",<&spi0>,
++			 <&max>,"reg:0=0";
++		spi0-1 = <0>, "+1",
++			 <&maxfrag>,"target:0=",<&spi0>,
++			 <&max>,"reg:0=1";
++		spi1-0 = <0>, "+2",
++			 <&maxfrag>,"target:0=",<&spi1>,
++			 <&max>,"reg:0=0";
++		spi1-1 = <0>, "+3",
++			 <&maxfrag>,"target:0=",<&spi1>,
++			 <&max>,"reg:0=1";
++		spi1-2 = <0>, "+4",
++			 <&maxfrag>,"target:0=",<&spi1>,
++			 <&max>,"reg:0=2";
++		spi2-0 = <0>, "+5",
++			 <&maxfrag>,"target:0=",<&spi2>,
++			 <&max>,"reg:0=0";
++		spi2-1 = <0>, "+6",
++			 <&maxfrag>,"target:0=",<&spi2>,
++			 <&max>,"reg:0=1";
++		spi2-2 = <0>, "+7",
++			 <&maxfrag>,"target:0=",<&spi2>,
++			 <&max>,"reg:0=2";
++		max6675 = <&max>,"compatible=maxim,max6675";
++		max31855 = <&max>,"compatible=maxim,max31855";
++		max31855e = <0>,"+9";
++		max31855j = <0>,"+10";
++		max31855k = <0>,"+11";
++		max31855n = <0>,"+12";
++		max31855r = <0>,"+13";
++		max31855s = <0>,"+14";
++		max31855t = <0>,"+15";
++		max31856  = <0>,"+16";
++		type_b    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_B>;
++		type_e    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_E>;
++		type_j    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_J>;
++		type_k    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_K>;
++		type_n    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_N>;
++		type_r    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_R>;
++		type_s    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_S>;
++		type_t    = <&max>,"thermocouple-type:0=",<THERMOCOUPLE_TYPE_T>;
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/mbed-dac-overlay.dts b/arch/arm/boot/dts/overlays/mbed-dac-overlay.dts
+new file mode 100644
+index 000000000000..840dd9b31db4
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mbed-dac-overlay.dts
+@@ -0,0 +1,64 @@
++// Definitions for mbed DAC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++                        #size-cells = <0>;
++			status = "okay";
++
++			tlv320aic23: codec@1a {
++				#sound-dai-cells = <0>;
++				reg = <0x1a>;
++				compatible = "ti,tlv320aic23";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "simple-audio-card";
++			i2s-controller = <&i2s>;
++			status = "okay";
++
++			simple-audio-card,name = "mbed-DAC";
++
++			simple-audio-card,widgets =
++				"Microphone", "Mic Jack",
++				"Line", "Line In",
++				"Headphone", "Headphone Jack";
++
++			simple-audio-card,routing =
++				"Headphone Jack", "LHPOUT",
++				"Headphone Jack", "RHPOUT",
++				"LLINEIN", "Line In",
++				"RLINEIN", "Line In",
++				"MICIN", "Mic Jack";
++
++			simple-audio-card,format = "i2s";
++
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++			};
++
++			sound_master: simple-audio-card,codec {
++				sound-dai = <&tlv320aic23>;
++				system-clock-frequency = <12288000>;
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
+new file mode 100644
+index 000000000000..c546d8ba7e6d
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
+@@ -0,0 +1,69 @@
++// Definitions for MCP23017 Gpio Extender from Microchip Semiconductor
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c1>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp23017_pins: mcp23017_pins@20 {
++				brcm,pins = <4>;
++				brcm,function = <0>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp23017: mcp@20 {
++				compatible = "microchip,mcp23017";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&mcp23017>;
++		__dormant__ {
++			compatible = "microchip,mcp23008";
++		};
++	};
++
++	fragment@4 {
++		target = <&mcp23017>;
++		mcp23017_irq: __overlay__ {
++			#interrupt-cells=<2>;
++			interrupt-parent = <&gpio>;
++			interrupts = <4 2>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	__overrides__ {
++		gpiopin = <&mcp23017_pins>,"brcm,pins:0",
++				<&mcp23017_irq>,"interrupts:0";
++		addr = <&mcp23017>,"reg:0", <&mcp23017_pins>,"reg:0";
++		mcp23008 = <0>,"=3";
++		noints = <0>,"!1!4";
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/mcp23s17-overlay.dts b/arch/arm/boot/dts/overlays/mcp23s17-overlay.dts
+new file mode 100644
+index 000000000000..484d64b225fb
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp23s17-overlay.dts
+@@ -0,0 +1,732 @@
++// Overlay for MCP23S08/17 GPIO Extenders from Microchip Semiconductor
++
++// dtparams:
++//     s08-spi<n>-<m>-present  - 4-bit integer, bitmap indicating MCP23S08 devices present on SPI<n>, CS#<m>.
++//     s17-spi<n>-<m>-present  - 8-bit integer, bitmap indicating MCP23S17 devices present on SPI<n>, CS#<m>.
++//     s08-spi<n>-<m>-int-gpio - integer, enables interrupts on a single MCP23S08 device on SPI<n>, CS#<m>, specifies the GPIO pin to which INT output is connected.
++//     s17-spi<n>-<m>-int-gpio - integer, enables mirrored interrupts on a single MCP23S17 device on SPI<n>, CS#<m>, specifies the GPIO pin to which either INTA or INTB output is connected.
++//
++// If devices are present on SPI1 or SPI2, those interfaces must be enabled with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++// If interrupts are enabled for a device on a given CS# on a SPI bus, that device must be the only one present on that SPI bus/CS#.
++//
++// Example 1: A single MCP23S17 device on SPI0, CS#0 with its SPI addr set to 0 and INTA output connected to GPIO25:
++// dtoverlay=mcp23s17:s17-spi0-0-present=1,s17-spi0-0-int-gpio=25
++//
++// Example 2: Two MCP23S08 devices on SPI1, CS#0 with their addrs set to 2 and 3. Three MCP23S17 devices on SPI1, CS#1 with their addrs set to 0, 1 and 7:
++// dtoverlay=spi1-2cs
++// dtoverlay=mcp23s17:s08-spi1-0-present=12,s17-spi1-1-present=131
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	// disable spi-dev on spi0.0
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi0.1
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi1.0
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi1.1
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi1.2
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi2.0
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi2.1
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// disable spi-dev on spi2.2
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	// enable one or more mcp23s08s on spi0.0
++	fragment@8 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_00: mcp23s08@0 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi0-0-present parameter */
++     				reg = <0>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi0-0-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s08s on spi0.1
++	fragment@9 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_01: mcp23s08@1 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi0-1-present parameter */
++     				reg = <1>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi0-1-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s08s on spi1.0
++	fragment@10 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_10: mcp23s08@0 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi1-0-present parameter */
++     				reg = <0>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi1-0-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s08s on spi1.1
++	fragment@11 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_11: mcp23s08@1 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi1-1-present parameter */
++     				reg = <1>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi1-1-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s08s on spi1.2
++	fragment@12 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_12: mcp23s08@2 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi1-2-present parameter */
++     				reg = <2>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi1-2-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s08s on spi2.0
++	fragment@13 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_20: mcp23s08@0 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi2-0-present parameter */
++     				reg = <0>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi2-0-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s08s on spi2.1
++	fragment@14 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_21: mcp23s08@1 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi2-1-present parameter */
++     				reg = <1>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi2-1-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s08s on spi2.2
++	fragment@15 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s08_22: mcp23s08@2 {
++				compatible = "microchip,mcp23s08";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi2-2-present parameter */
++     				reg = <2>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi2-2-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi0.0
++	fragment@16 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_00: mcp23s17@0 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi0-0-present parameter */
++     				reg = <0>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi0-0-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi0.1
++	fragment@17 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_01: mcp23s17@1 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi0-1-present parameter */
++     				reg = <1>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi0-1-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi1.0
++	fragment@18 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_10: mcp23s17@0 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi1-0-present parameter */
++     				reg = <0>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi1-0-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi1.1
++	fragment@19 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_11: mcp23s17@1 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi1-1-present parameter */
++     				reg = <1>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi1-1-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi1.2
++	fragment@20 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_12: mcp23s17@2 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi1-2-present parameter */
++     				reg = <2>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi1-2-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi2.0
++	fragment@21 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_20: mcp23s17@0 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi2-0-present parameter */
++     				reg = <0>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi2-0-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi2.1
++	fragment@22 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_21: mcp23s17@1 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi2-1-present parameter */
++     				reg = <1>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi2-1-int-gpio parameter */
++			};
++		};
++	};
++
++	// enable one or more mcp23s17s on spi2.2
++	fragment@23 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++			mcp23s17_22: mcp23s17@2 {
++				compatible = "microchip,mcp23s17";
++  				gpio-controller;
++  				#gpio-cells = <2>;
++    				microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi2-2-present parameter */
++     				reg = <2>;
++    				spi-max-frequency = <500000>;
++				status = "okay";
++				#interrupt-cells=<2>;
++				interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi2-2-int-gpio parameter */
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi0.0 as a input with no pull-up/down
++	fragment@24 {
++		target = <&gpio>;
++		__dormant__ {
++			spi0_0_int_pins: spi0_0_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi0-0-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi0.1 as a input with no pull-up/down
++	fragment@25 {
++		target = <&gpio>;
++		__dormant__ {
++			spi0_1_int_pins: spi0_1_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi0-1-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi1.0 as a input with no pull-up/down
++	fragment@26 {
++		target = <&gpio>;
++		__dormant__ {
++			spi1_0_int_pins: spi1_0_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi1-0-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi1.1 as a input with no pull-up/down
++	fragment@27 {
++		target = <&gpio>;
++		__dormant__ {
++			spi1_1_int_pins: spi1_1_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi1-1-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi1.2 as a input with no pull-up/down
++	fragment@28 {
++		target = <&gpio>;
++		__dormant__ {
++			spi1_2_int_pins: spi1_2_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi1-2-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi2.0 as a input with no pull-up/down
++	fragment@29 {
++		target = <&gpio>;
++		__dormant__ {
++			spi2_0_int_pins: spi2_0_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi2-0-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi2.1 as a input with no pull-up/down
++	fragment@30 {
++		target = <&gpio>;
++		__dormant__ {
++			spi2_1_int_pins: spi2_1_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi2-1-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi2.2 as a input with no pull-up/down
++	fragment@31 {
++		target = <&gpio>;
++		__dormant__ {
++			spi2_2_int_pins: spi2_2_int_pins {
++				brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi2-2-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi0.0.
++	// Use default active low interrupt signalling.
++	fragment@32 {
++		target = <&mcp23s08_00>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi0.1.
++	// Use default active low interrupt signalling.
++	fragment@33 {
++		target = <&mcp23s08_01>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi1.0.
++	// Use default active low interrupt signalling.
++	fragment@34 {
++		target = <&mcp23s08_10>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi1.1.
++	// Use default active low interrupt signalling.
++	fragment@35 {
++		target = <&mcp23s08_11>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi1.2.
++	// Use default active low interrupt signalling.
++	fragment@36 {
++		target = <&mcp23s08_12>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi2.0.
++	// Use default active low interrupt signalling.
++	fragment@37 {
++		target = <&mcp23s08_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi2.1.
++	// Use default active low interrupt signalling.
++	fragment@38 {
++		target = <&mcp23s08_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s08 on spi2.2.
++	// Use default active low interrupt signalling.
++	fragment@39 {
++		target = <&mcp23s08_22>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi0.0.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Use default active low interrupt signalling.
++	fragment@40 {
++		target = <&mcp23s17_00>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi0.1.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Configure INTA/B outputs of mcp23s08/17 as active low.
++	fragment@41 {
++		target = <&mcp23s17_01>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi1.0.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Configure INTA/B outputs of mcp23s08/17 as active low.
++	fragment@42 {
++		target = <&mcp23s17_10>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi1.1.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Configure INTA/B outputs of mcp23s08/17 as active low.
++	fragment@43 {
++		target = <&mcp23s17_11>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi1.2.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Configure INTA/B outputs of mcp23s08/17 as active low.
++	fragment@44 {
++		target = <&mcp23s17_12>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi2.0.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Configure INTA/B outputs of mcp23s08/17 as active low.
++	fragment@45 {
++		target = <&mcp23s17_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi2.1.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Configure INTA/B outputs of mcp23s08/17 as active low.
++	fragment@46 {
++		target = <&mcp23s17_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	// Enable interrupts for a mcp23s17 on spi2.2.
++	// Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
++	// Configure INTA/B outputs of mcp23s08/17 as active low.
++	fragment@47 {
++		target = <&mcp23s17_22>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			microchip,irq-mirror;
++		};
++	};
++
++	__overrides__ {
++		s08-spi0-0-present = <0>,"+0+8",  <&mcp23s08_00>,"microchip,spi-present-mask:0";
++		s08-spi0-1-present = <0>,"+1+9",  <&mcp23s08_01>,"microchip,spi-present-mask:0";
++		s08-spi1-0-present = <0>,"+2+10", <&mcp23s08_10>,"microchip,spi-present-mask:0";
++		s08-spi1-1-present = <0>,"+3+11", <&mcp23s08_11>,"microchip,spi-present-mask:0";
++		s08-spi1-2-present = <0>,"+4+12", <&mcp23s08_12>,"microchip,spi-present-mask:0";
++		s08-spi2-0-present = <0>,"+5+13", <&mcp23s08_20>,"microchip,spi-present-mask:0";
++		s08-spi2-1-present = <0>,"+6+14", <&mcp23s08_21>,"microchip,spi-present-mask:0";
++		s08-spi2-2-present = <0>,"+7+15", <&mcp23s08_22>,"microchip,spi-present-mask:0";
++		s17-spi0-0-present = <0>,"+0+16", <&mcp23s17_00>,"microchip,spi-present-mask:0";
++		s17-spi0-1-present = <0>,"+1+17", <&mcp23s17_01>,"microchip,spi-present-mask:0";
++		s17-spi1-0-present = <0>,"+2+18", <&mcp23s17_10>,"microchip,spi-present-mask:0";
++		s17-spi1-1-present = <0>,"+3+19", <&mcp23s17_11>,"microchip,spi-present-mask:0";
++		s17-spi1-2-present = <0>,"+4+20", <&mcp23s17_12>,"microchip,spi-present-mask:0";
++		s17-spi2-0-present = <0>,"+5+21", <&mcp23s17_20>,"microchip,spi-present-mask:0";
++		s17-spi2-1-present = <0>,"+6+22", <&mcp23s17_21>,"microchip,spi-present-mask:0";
++		s17-spi2-2-present = <0>,"+7+23", <&mcp23s17_22>,"microchip,spi-present-mask:0";
++		s08-spi0-0-int-gpio = <0>,"+24+32", <&spi0_0_int_pins>,"brcm,pins:0", <&mcp23s08_00>,"interrupts:0";
++		s08-spi0-1-int-gpio = <0>,"+25+33", <&spi0_1_int_pins>,"brcm,pins:0", <&mcp23s08_01>,"interrupts:0";
++		s08-spi1-0-int-gpio = <0>,"+26+34", <&spi1_0_int_pins>,"brcm,pins:0", <&mcp23s08_10>,"interrupts:0";
++		s08-spi1-1-int-gpio = <0>,"+27+35", <&spi1_1_int_pins>,"brcm,pins:0", <&mcp23s08_11>,"interrupts:0";
++		s08-spi1-2-int-gpio = <0>,"+28+36", <&spi1_2_int_pins>,"brcm,pins:0", <&mcp23s08_12>,"interrupts:0";
++		s08-spi2-0-int-gpio = <0>,"+29+37", <&spi2_0_int_pins>,"brcm,pins:0", <&mcp23s08_20>,"interrupts:0";
++		s08-spi2-1-int-gpio = <0>,"+30+38", <&spi2_1_int_pins>,"brcm,pins:0", <&mcp23s08_21>,"interrupts:0";
++		s08-spi2-2-int-gpio = <0>,"+31+39", <&spi2_2_int_pins>,"brcm,pins:0", <&mcp23s08_22>,"interrupts:0";
++		s17-spi0-0-int-gpio = <0>,"+24+40", <&spi0_0_int_pins>,"brcm,pins:0", <&mcp23s17_00>,"interrupts:0";
++		s17-spi0-1-int-gpio = <0>,"+25+41", <&spi0_1_int_pins>,"brcm,pins:0", <&mcp23s17_01>,"interrupts:0";
++		s17-spi1-0-int-gpio = <0>,"+26+42", <&spi1_0_int_pins>,"brcm,pins:0", <&mcp23s17_10>,"interrupts:0";
++		s17-spi1-1-int-gpio = <0>,"+27+43", <&spi1_1_int_pins>,"brcm,pins:0", <&mcp23s17_11>,"interrupts:0";
++		s17-spi1-2-int-gpio = <0>,"+28+44", <&spi1_2_int_pins>,"brcm,pins:0", <&mcp23s17_12>,"interrupts:0";
++		s17-spi2-0-int-gpio = <0>,"+29+45", <&spi2_0_int_pins>,"brcm,pins:0", <&mcp23s17_20>,"interrupts:0";
++		s17-spi2-1-int-gpio = <0>,"+30+46", <&spi2_1_int_pins>,"brcm,pins:0", <&mcp23s17_21>,"interrupts:0";
++		s17-spi2-2-int-gpio = <0>,"+31+47", <&spi2_2_int_pins>,"brcm,pins:0", <&mcp23s17_22>,"interrupts:0";
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts b/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
+new file mode 100755
+index 000000000000..46f143d809cc
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
+@@ -0,0 +1,73 @@
++/*
++ * Device tree overlay for mcp251x/can0 on spi0.0
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++    /* disable spi-dev for spi0.0 */
++    fragment@0 {
++        target = <&spi0>;
++        __overlay__ {
++            status = "okay";
++        };
++    };
++
++    fragment@1 {
++	target = <&spidev0>;
++	__overlay__ {
++	    status = "disabled";
++	};
++    };
++
++    /* the interrupt pin of the can-controller */
++    fragment@2 {
++        target = <&gpio>;
++        __overlay__ {
++            can0_pins: can0_pins {
++                brcm,pins = <25>;
++                brcm,function = <0>; /* input */
++            };
++        };
++    };
++
++    /* the clock/oscillator of the can-controller */
++    fragment@3 {
++        target-path = "/";
++        __overlay__ {
++            /* external oscillator of mcp2515 on SPI0.0 */
++            can0_osc: can0_osc {
++                compatible = "fixed-clock";
++                #clock-cells = <0>;
++                clock-frequency  = <16000000>;
++            };
++        };
++    };
++
++    /* the spi config of the can-controller itself binding everything together */
++    fragment@4 {
++        target = <&spi0>;
++        __overlay__ {
++            /* needed to avoid dtc warning */
++            #address-cells = <1>;
++            #size-cells = <0>;
++            can0: mcp2515@0 {
++                reg = <0>;
++                compatible = "microchip,mcp2515";
++                pinctrl-names = "default";
++                pinctrl-0 = <&can0_pins>;
++                spi-max-frequency = <10000000>;
++                interrupt-parent = <&gpio>;
++                interrupts = <25 8>; /* IRQ_TYPE_LEVEL_LOW */
++                clocks = <&can0_osc>;
++            };
++        };
++    };
++    __overrides__ {
++        oscillator = <&can0_osc>,"clock-frequency:0";
++        spimaxfrequency = <&can0>,"spi-max-frequency:0";
++        interrupt = <&can0_pins>,"brcm,pins:0",<&can0>,"interrupts:0";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
+new file mode 100644
+index 000000000000..0a8dd576818e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
+@@ -0,0 +1,73 @@
++/*
++ * Device tree overlay for mcp251x/can1 on spi0.1 edited by petit_miner
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++    /* disable spi-dev for spi0.1 */
++    fragment@0 {
++        target = <&spi0>;
++        __overlay__ {
++            status = "okay";
++        };
++    };
++
++    fragment@1 {
++	target = <&spidev1>;
++	__overlay__ {
++	    status = "disabled";
++	};
++    };
++
++    /* the interrupt pin of the can-controller */
++    fragment@2 {
++        target = <&gpio>;
++        __overlay__ {
++            can1_pins: can1_pins {
++                brcm,pins = <25>;
++                brcm,function = <0>; /* input */
++            };
++        };
++    };
++
++    /* the clock/oscillator of the can-controller */
++    fragment@3 {
++        target-path = "/";
++        __overlay__ {
++            /* external oscillator of mcp2515 on spi0.1 */
++            can1_osc: can1_osc {
++                compatible = "fixed-clock";
++                #clock-cells = <0>;
++                clock-frequency  = <16000000>;
++            };
++        };
++    };
++
++    /* the spi config of the can-controller itself binding everything together */
++    fragment@4 {
++        target = <&spi0>;
++        __overlay__ {
++            /* needed to avoid dtc warning */
++            #address-cells = <1>;
++            #size-cells = <0>;
++            can1: mcp2515@1 {
++                reg = <1>;
++                compatible = "microchip,mcp2515";
++                pinctrl-names = "default";
++                pinctrl-0 = <&can1_pins>;
++                spi-max-frequency = <10000000>;
++                interrupt-parent = <&gpio>;
++                interrupts = <25 8>; /* IRQ_TYPE_LEVEL_LOW */
++                clocks = <&can1_osc>;
++            };
++        };
++    };
++    __overrides__ {
++        oscillator = <&can1_osc>,"clock-frequency:0";
++        spimaxfrequency = <&can1>,"spi-max-frequency:0";
++        interrupt = <&can1_pins>,"brcm,pins:0",<&can1>,"interrupts:0";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts b/arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts
+new file mode 100644
+index 000000000000..65c861bbd340
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts
+@@ -0,0 +1,226 @@
++// SPDX-License-Identifier: (GPL-2.0 OR MIT)
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@8 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins: mcp251xfd_pins {
++				brcm,pins = <25>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++
++	fragment@9 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc: mcp251xfd-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++
++	mcp251xfd_frag: fragment@10 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp251xfd: mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc>;
++			};
++		};
++	};
++
++	fragment@11 {
++		target = <&mcp251xfd>;
++		mcp251xfd_rx_int_gpios: __dormant__ {
++			microchip,rx-int-gpios = <&gpio 255 GPIO_ACTIVE_LOW>;
++		};
++	};
++
++	fragment@12 {
++		target = <&gpio>;
++		__dormant__ {
++			mcp251xfd_xceiver_pins: mcp251xfd_xceiver_pins {
++				brcm,pins = <255>;
++				brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++			};
++		};
++	};
++
++	fragment@13 {
++		target-path = "/";
++		__dormant__ {
++			reg_mcp251xfd_xceiver: reg_mcp251xfd_xceiver {
++				compatible = "regulator-fixed";
++				regulator-name = "mcp251xfd_xceiver";
++				regulator-min-microvolt = <3300000>;
++				regulator-max-microvolt = <3300000>;
++				gpio = <&gpio 4 GPIO_ACTIVE_HIGH>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_xceiver_pins>;
++			};
++		};
++	};
++
++	fragment@14 {
++		target = <&mcp251xfd>;
++		__dormant__ {
++			xceiver-supply = <&reg_mcp251xfd_xceiver>;
++		};
++	};
++
++	__overrides__ {
++		spi0-0 = <0>, "+0",
++			<&mcp251xfd_frag>, "target:0=", <&spi0>,
++			<&mcp251xfd>, "reg:0=0",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi0_0_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi0-0-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi0_0_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi0-0-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi0-0-xceiver";
++		spi0-1 = <0>, "+1",
++			<&mcp251xfd_frag>, "target:0=", <&spi0>,
++			<&mcp251xfd>, "reg:0=1",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi0_1_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi0-1-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi0_1_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi0-1-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi0-1-xceiver";
++		spi1-0 = <0>, "+2",
++			<&mcp251xfd_frag>, "target:0=", <&spi1>,
++			<&mcp251xfd>, "reg:0=0",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi1_0_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-0-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_0_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-0-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-0-xceiver";
++		spi1-1 = <0>, "+3",
++			<&mcp251xfd_frag>, "target:0=", <&spi1>,
++			<&mcp251xfd>, "reg:0=1",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi1_1_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-1-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_1_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-1-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-1-xceiver";
++		spi1-2 = <0>, "+4",
++			<&mcp251xfd_frag>, "target:0=", <&spi1>,
++			<&mcp251xfd>, "reg:0=2",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi1_2_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi1-2-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi1_2_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi1-2-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi1-2-xceiver";
++		spi2-0 = <0>, "+5",
++			<&mcp251xfd_frag>, "target:0=", <&spi2>,
++			<&mcp251xfd>, "reg:0=0",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi2_0_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-0-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_0_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-0-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-0-xceiver";
++		spi2-1 = <0>, "+6",
++			<&mcp251xfd_frag>, "target:0=", <&spi2>,
++			<&mcp251xfd>, "reg:0=1",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi2_1_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-1-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_1_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-1-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-1-xceiver";
++		spi2-2 = <0>, "+7",
++			<&mcp251xfd_frag>, "target:0=", <&spi2>,
++			<&mcp251xfd>, "reg:0=2",
++			<&mcp251xfd_pins>, "name=mcp251xfd_spi2_2_pins",
++			<&clk_mcp251xfd_osc>, "name=mcp251xfd-spi2-2-osc",
++			<&mcp251xfd_xceiver_pins>, "name=mcp251xfd_spi2_2_xceiver_pins",
++			<&reg_mcp251xfd_xceiver>, "name=reg-mcp251xfd-spi2-2-xceiver",
++			<&reg_mcp251xfd_xceiver>, "regulator-name=mcp251xfd-spi2-2-xceiver";
++		oscillator = <&clk_mcp251xfd_osc>, "clock-frequency:0";
++		speed = <&mcp251xfd>, "spi-max-frequency:0";
++		interrupt = <&mcp251xfd_pins>, "brcm,pins:0",
++			<&mcp251xfd>, "interrupts:0";
++		rx_interrupt = <0>, "+11",
++			<&mcp251xfd_pins>, "brcm,pins:4",
++			<&mcp251xfd_rx_int_gpios>, "microchip,rx-int-gpios:4";
++		xceiver_enable = <0>, "+12+13+14",
++			<&mcp251xfd_xceiver_pins>, "brcm,pins:0",
++			<&reg_mcp251xfd_xceiver>, "gpio:4";
++		xceiver_active_high = <&reg_mcp251xfd_xceiver>, "enable-active-high?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/mcp3008-overlay.dts b/arch/arm/boot/dts/overlays/mcp3008-overlay.dts
+new file mode 100755
+index 000000000000..957fdb9310af
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp3008-overlay.dts
+@@ -0,0 +1,205 @@
++/*
++ * Device tree overlay for Microchip mcp3008 10-Bit A/D Converters
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@8 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_00: mcp3008@0 {
++				compatible = "microchip,mcp3008";
++				reg = <0>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@9 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_01: mcp3008@1 {
++				compatible = "microchip,mcp3008";
++				reg = <1>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@10 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_10: mcp3008@0 {
++				compatible = "microchip,mcp3008";
++				reg = <0>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@11 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_11: mcp3008@1 {
++				compatible = "microchip,mcp3008";
++				reg = <1>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@12 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_12: mcp3008@2 {
++				compatible = "microchip,mcp3008";
++				reg = <2>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@13 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_20: mcp3008@0 {
++				compatible = "microchip,mcp3008";
++				reg = <0>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@14 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_21: mcp3008@1 {
++				compatible = "microchip,mcp3008";
++				reg = <1>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@15 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3008_22: mcp3008@2 {
++				compatible = "microchip,mcp3008";
++				reg = <2>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	__overrides__ {
++		spi0-0-present = <0>, "+0+8";
++		spi0-1-present = <0>, "+1+9";
++		spi1-0-present = <0>, "+2+10";
++		spi1-1-present = <0>, "+3+11";
++		spi1-2-present = <0>, "+4+12";
++		spi2-0-present = <0>, "+5+13";
++		spi2-1-present = <0>, "+6+14";
++		spi2-2-present = <0>, "+7+15";
++		spi0-0-speed = <&mcp3008_00>, "spi-max-frequency:0";
++		spi0-1-speed = <&mcp3008_01>, "spi-max-frequency:0";
++		spi1-0-speed = <&mcp3008_10>, "spi-max-frequency:0";
++		spi1-1-speed = <&mcp3008_11>, "spi-max-frequency:0";
++		spi1-2-speed = <&mcp3008_12>, "spi-max-frequency:0";
++		spi2-0-speed = <&mcp3008_20>, "spi-max-frequency:0";
++		spi2-1-speed = <&mcp3008_21>, "spi-max-frequency:0";
++		spi2-2-speed = <&mcp3008_22>, "spi-max-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/mcp3202-overlay.dts b/arch/arm/boot/dts/overlays/mcp3202-overlay.dts
+new file mode 100755
+index 000000000000..8e4e9f60f285
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp3202-overlay.dts
+@@ -0,0 +1,205 @@
++/*
++ * Device tree overlay for Microchip mcp3202 12-Bit A/D Converters
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@8 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_00: mcp3202@0 {
++				compatible = "mcp3202";
++				reg = <0>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@9 {
++		target = <&spi0>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_01: mcp3202@1 {
++				compatible = "mcp3202";
++				reg = <1>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@10 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_10: mcp3202@0 {
++				compatible = "mcp3202";
++				reg = <0>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@11 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_11: mcp3202@1 {
++				compatible = "mcp3202";
++				reg = <1>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@12 {
++		target = <&spi1>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_12: mcp3202@2 {
++				compatible = "mcp3202";
++				reg = <2>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@13 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_20: mcp3202@0 {
++				compatible = "mcp3202";
++				reg = <0>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@14 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_21: mcp3202@1 {
++				compatible = "mcp3202";
++				reg = <1>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	fragment@15 {
++		target = <&spi2>;
++		__dormant__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp3202_22: mcp3202@2 {
++				compatible = "mcp3202";
++				reg = <2>;
++				spi-max-frequency = <1600000>;
++			};
++		};
++	};
++
++	__overrides__ {
++		spi0-0-present = <0>, "+0+8";
++		spi0-1-present = <0>, "+1+9";
++		spi1-0-present = <0>, "+2+10";
++		spi1-1-present = <0>, "+3+11";
++		spi1-2-present = <0>, "+4+12";
++		spi2-0-present = <0>, "+5+13";
++		spi2-1-present = <0>, "+6+14";
++		spi2-2-present = <0>, "+7+15";
++		spi0-0-speed = <&mcp3202_00>, "spi-max-frequency:0";
++		spi0-1-speed = <&mcp3202_01>, "spi-max-frequency:0";
++		spi1-0-speed = <&mcp3202_10>, "spi-max-frequency:0";
++		spi1-1-speed = <&mcp3202_11>, "spi-max-frequency:0";
++		spi1-2-speed = <&mcp3202_12>, "spi-max-frequency:0";
++		spi2-0-speed = <&mcp3202_20>, "spi-max-frequency:0";
++		spi2-1-speed = <&mcp3202_21>, "spi-max-frequency:0";
++		spi2-2-speed = <&mcp3202_22>, "spi-max-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/mcp342x-overlay.dts b/arch/arm/boot/dts/overlays/mcp342x-overlay.dts
+new file mode 100644
+index 000000000000..714eca5a4b5e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp342x-overlay.dts
+@@ -0,0 +1,164 @@
++// Overlay for MCP3421-8 ADCs from Microchip Semiconductor
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3421: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3421";
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3422: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3422";
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3423: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3423";
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3424: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3424";
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3425: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3425","mcp3425";
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@5 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3426: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3426";
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@6 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3427: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3427";
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@7 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			mcp3428: mcp@68 {
++				reg = <0x68>;
++				compatible = "microchip,mcp3428";
++
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		addr = <&mcp3421>,"reg:0",
++		       <&mcp3422>,"reg:0",
++		       <&mcp3423>,"reg:0",
++		       <&mcp3424>,"reg:0",
++		       <&mcp3425>,"reg:0",
++		       <&mcp3426>,"reg:0",
++		       <&mcp3427>,"reg:0",
++		       <&mcp3428>,"reg:0";
++		mcp3421 = <0>,"=0";
++		mcp3422 = <0>,"=1";
++		mcp3423 = <0>,"=2";
++		mcp3424 = <0>,"=3";
++		mcp3425 = <0>,"=4";
++		mcp3426 = <0>,"=5";
++		mcp3427 = <0>,"=6";
++		mcp3428 = <0>,"=7";
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/media-center-overlay.dts b/arch/arm/boot/dts/overlays/media-center-overlay.dts
+new file mode 100644
+index 000000000000..1b56963f4f16
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/media-center-overlay.dts
+@@ -0,0 +1,134 @@
++/*
++ * Device Tree overlay for Media Center HAT by Pi Supply
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++
++			spidev@0{
++				status = "disabled";
++			};
++
++			spidev@1{
++				status = "disabled";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			rpi_display_pins: rpi_display_pins {
++				brcm,pins = <12 23 24 25>;
++				brcm,function = <1 1 1 0>; /* out out out in */
++				brcm,pull = <0 0 0 2>; /* - - - up */
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			rpidisplay: rpi-display@0{
++				compatible = "ilitek,ili9341";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&rpi_display_pins>;
++
++				spi-max-frequency = <32000000>;
++				rotate = <90>;
++				bgr;
++				fps = <30>;
++				buswidth = <8>;
++				reset-gpios = <&gpio 23 1>;
++				dc-gpios = <&gpio 24 0>;
++				led-gpios = <&gpio 12 0>;
++				debug = <0>;
++			};
++
++			rpidisplay_ts: rpi-display-ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <25 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 25 1>;
++				ti,x-plate-ohms = /bits/ 16 <60>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			lirc_rpi: lirc_rpi {
++				compatible = "rpi,lirc-rpi";
++				pinctrl-names = "default";
++				pinctrl-0 = <&lirc_pins>;
++				status = "okay";
++
++				// Override autodetection of IR receiver circuit
++				// (0 = active high, 1 = active low, -1 = no override )
++				rpi,sense = <0xffffffff>;
++
++				// Software carrier
++				// (0 = off, 1 = on)
++				rpi,softcarrier = <1>;
++
++				// Invert output
++				// (0 = off, 1 = on)
++				rpi,invert = <0>;
++
++				// Enable debugging messages
++				// (0 = off, 1 = on)
++				rpi,debug = <0>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&gpio>;
++		__overlay__ {
++			lirc_pins: lirc_pins {
++				brcm,pins = <6 5>;
++				brcm,function = <1 0>; // out in
++				brcm,pull = <0 1>; // off down
++			};
++		};
++	};
++
++	__overrides__ {
++		speed =     <&rpidisplay>,"spi-max-frequency:0";
++		rotate =    <&rpidisplay>,"rotate:0";
++		fps =       <&rpidisplay>,"fps:0";
++		debug =     <&rpidisplay>,"debug:0", 
++		            <&lirc_rpi>,"rpi,debug:0";
++		xohms =     <&rpidisplay_ts>,"ti,x-plate-ohms;0";
++		swapxy =    <&rpidisplay_ts>,"ti,swap-xy?";
++		backlight = <&rpidisplay>,"led-gpios:4",
++		            <&rpi_display_pins>,"brcm,pins:0";
++
++		gpio_out_pin =  <&lirc_pins>,"brcm,pins:0";
++		gpio_in_pin =   <&lirc_pins>,"brcm,pins:4";
++		gpio_in_pull =  <&lirc_pins>,"brcm,pull:4";
++
++		sense =         <&lirc_rpi>,"rpi,sense:0";
++		softcarrier =   <&lirc_rpi>,"rpi,softcarrier:0";
++		invert =        <&lirc_rpi>,"rpi,invert:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/merus-amp-overlay.dts b/arch/arm/boot/dts/overlays/merus-amp-overlay.dts
+new file mode 100644
+index 000000000000..4501fbdc253d
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/merus-amp-overlay.dts
+@@ -0,0 +1,60 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for Infineon Merus-Amp
++/dts-v1/;
++/plugin/;
++#include <dt-bindings/pinctrl/bcm2835.h>
++#include <dt-bindings/gpio/gpio.h>
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			merus_amp_pins: merus_amp_pins {
++				brcm,pins = <23>;
++				brcm,function = <0>; /* in */
++				brcm,pull = <2>; /* up */
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			merus_amp: ma120x0p@20 {
++				#sound-dai-cells = <0>;
++				compatible = "ma,ma120x0p";
++				reg = <0x20>;
++				status = "okay";
++				pinctrl-names = "default";
++				pinctrl-0 = <&merus_amp_pins>;
++				enable_gp-gpios = <&gpio 14 GPIO_ACTIVE_HIGH>;
++				mute_gp-gpios = <&gpio 15 GPIO_ACTIVE_HIGH>;
++				booster_gp-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
++				error_gp-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "merus,merus-amp";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/midi-uart0-overlay.dts b/arch/arm/boot/dts/overlays/midi-uart0-overlay.dts
+new file mode 100644
+index 000000000000..f7e44d29e101
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/midi-uart0-overlay.dts
+@@ -0,0 +1,36 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/*
++ * Fake a higher clock rate to get a larger divisor, and thereby a lower
++ * baudrate. The real clock is 48MHz, which we scale so that requesting
++ * 38.4kHz results in an actual 31.25kHz.
++ *
++ *   48000000*38400/31250 = 58982400
++ */
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			midi_clk: midi_clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-output-names = "uart0_pclk";
++				clock-frequency = <58982400>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&uart0>;
++		__overlay__ {
++			clocks = <&midi_clk>,
++			         <&clocks BCM2835_CLOCK_VPU>;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/midi-uart1-overlay.dts b/arch/arm/boot/dts/overlays/midi-uart1-overlay.dts
+new file mode 100644
+index 000000000000..e0bc410acbff
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/midi-uart1-overlay.dts
+@@ -0,0 +1,43 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835-aux.h>
++
++/*
++ * Fake a higher clock rate to get a larger divisor, and thereby a lower
++ * baudrate. The real clock is 48MHz, which we scale so that requesting
++ * 38.4kHz results in an actual 31.25kHz.
++ *
++ *   48000000*38400/31250 = 58982400
++ */
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/clocks";
++		__overlay__ {
++			midi_clk: clock@5 {
++				compatible = "fixed-factor-clock";
++				#clock-cells = <0>;
++				clocks = <&aux BCM2835_AUX_CLOCK_UART>;
++				clock-mult = <38400>;
++				clock-div  = <31250>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&uart1>;
++		__overlay__ {
++			clocks = <&midi_clk>;
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			clock-output-names = "aux_uart", "aux_spi1", "aux_spi2";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/midi-uart2-overlay.dts b/arch/arm/boot/dts/overlays/midi-uart2-overlay.dts
+new file mode 100644
+index 000000000000..66f3092e9a74
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/midi-uart2-overlay.dts
+@@ -0,0 +1,37 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/*
++ * Fake a higher clock rate to get a larger divisor, and thereby a lower
++ * baudrate. The real clock is 48MHz, which we scale so that requesting
++ * 38.4kHz results in an actual 31.25kHz.
++ *
++ *   48000000*38400/31250 = 58982400
++ */
++
++/{
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target-path = "/";
++                __overlay__ {
++                        midi_clk: midi_clk2 {
++                                compatible = "fixed-clock";
++                                #clock-cells = <0>;
++                                clock-output-names = "uart2_pclk";
++                                clock-frequency = <58982400>;
++                        };
++                };
++        };
++
++        fragment@1 {
++                target = <&uart2>;
++                __overlay__ {
++                        clocks = <&midi_clk>,
++                                 <&clocks BCM2835_CLOCK_VPU>;
++                };
++        };
++};
++
+diff --git a/arch/arm/boot/dts/overlays/midi-uart3-overlay.dts b/arch/arm/boot/dts/overlays/midi-uart3-overlay.dts
+new file mode 100644
+index 000000000000..55c6cb94f963
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/midi-uart3-overlay.dts
+@@ -0,0 +1,38 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/*
++ * Fake a higher clock rate to get a larger divisor, and thereby a lower
++ * baudrate. The real clock is 48MHz, which we scale so that requesting
++ * 38.4kHz results in an actual 31.25kHz.
++ *
++ *   48000000*38400/31250 = 58982400
++ */
++
++/{
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target-path = "/";
++                __overlay__ {
++                        midi_clk: midi_clk3 {
++                                compatible = "fixed-clock";
++                                #clock-cells = <0>;
++                                clock-output-names = "uart3_pclk";
++                                clock-frequency = <58982400>;
++                        };
++                };
++        };
++
++        fragment@1 {
++                target = <&uart3>;
++                __overlay__ {
++                        clocks = <&midi_clk>,
++                                 <&clocks BCM2835_CLOCK_VPU>;
++                };
++        };
++};
++
++
+diff --git a/arch/arm/boot/dts/overlays/midi-uart4-overlay.dts b/arch/arm/boot/dts/overlays/midi-uart4-overlay.dts
+new file mode 100644
+index 000000000000..5819df1a6b2e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/midi-uart4-overlay.dts
+@@ -0,0 +1,38 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/*
++ * Fake a higher clock rate to get a larger divisor, and thereby a lower
++ * baudrate. The real clock is 48MHz, which we scale so that requesting
++ * 38.4kHz results in an actual 31.25kHz.
++ *
++ *   48000000*38400/31250 = 58982400
++ */
++
++/{
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target-path = "/";
++                __overlay__ {
++                        midi_clk: midi_clk4 {
++                                compatible = "fixed-clock";
++                                #clock-cells = <0>;
++                                clock-output-names = "uart4_pclk";
++                                clock-frequency = <58982400>;
++                        };
++                };
++        };
++
++        fragment@1 {
++                target = <&uart4>;
++                __overlay__ {
++                        clocks = <&midi_clk>,
++                                 <&clocks BCM2835_CLOCK_VPU>;
++                };
++        };
++};
++
++
+diff --git a/arch/arm/boot/dts/overlays/midi-uart5-overlay.dts b/arch/arm/boot/dts/overlays/midi-uart5-overlay.dts
+new file mode 100644
+index 000000000000..a1d37f7103ff
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/midi-uart5-overlay.dts
+@@ -0,0 +1,38 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/*
++ * Fake a higher clock rate to get a larger divisor, and thereby a lower
++ * baudrate. The real clock is 48MHz, which we scale so that requesting
++ * 38.4kHz results in an actual 31.25kHz.
++ *
++ *   48000000*38400/31250 = 58982400
++ */
++
++/{
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target-path = "/";
++                __overlay__ {
++                        midi_clk: midi_clk5 {
++                                compatible = "fixed-clock";
++                                #clock-cells = <0>;
++                                clock-output-names = "uart5_pclk";
++                                clock-frequency = <58982400>;
++                        };
++                };
++        };
++
++        fragment@1 {
++                target = <&uart5>;
++                __overlay__ {
++                        clocks = <&midi_clk>,
++                                 <&clocks BCM2835_CLOCK_VPU>;
++                };
++        };
++};
++
++
+diff --git a/arch/arm/boot/dts/overlays/minipitft13-overlay.dts b/arch/arm/boot/dts/overlays/minipitft13-overlay.dts
+new file mode 100644
+index 000000000000..b1a0a2a41f72
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/minipitft13-overlay.dts
+@@ -0,0 +1,70 @@
++/*
++ * Device Tree overlay for Adafruit Mini PiTFT 1.3" and 1.5" 240x240 Display
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target = <&spi0>;
++                __overlay__ {
++                        status = "okay";
++
++                        spidev@0{
++                                status = "disabled";
++                        };
++
++                        spidev@1{
++                                status = "disabled";
++                        };
++                };
++        };
++
++        fragment@1 {
++                target = <&gpio>;
++                __overlay__ {
++                        pitft_pins: pitft_pins {
++                                brcm,pins = <25>;
++                                brcm,function = <1>; /* out */
++                                brcm,pull = <0>; /* none */
++                        };
++                };
++        };
++
++        fragment@2 {
++                target = <&spi0>;
++                __overlay__ {
++                        /* needed to avoid dtc warning */
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++
++                        pitft: pitft@0 {
++                                compatible = "fbtft,minipitft13";
++                                reg = <0>;
++                                pinctrl-names = "default";
++                                pinctrl-0 = <&pitft_pins>;
++                                spi-max-frequency = <32000000>;
++                                rotate = <0>;
++                                width = <240>;
++                                height = <240>;
++                                buswidth = <8>;
++                                dc-gpios = <&gpio 25 0>;
++                                led-gpios = <&gpio 26 0>;
++                                debug = <0>;
++                        };
++                };
++        };
++
++        __overrides__ {
++                speed =   <&pitft>,"spi-max-frequency:0";
++                rotate =  <&pitft>,"rotate:0";
++                width =   <&pitft>,"width:0";
++                height =  <&pitft>,"height:0";
++                fps =     <&pitft>,"fps:0";
++                debug =   <&pitft>,"debug:0";
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts b/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts
+new file mode 100644
+index 000000000000..da49f14a0940
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts
+@@ -0,0 +1,93 @@
++/dts-v1/;
++/plugin/;
++
++/* Switch Pi3 Bluetooth function to use the mini-UART (ttyS0) and restore
++   UART0/ttyAMA0 over GPIOs 14 & 15. Note that this may reduce the maximum
++   usable baudrate.
++
++   It is also necessary to edit /lib/systemd/system/hciuart.service and
++   replace ttyAMA0 with ttyS0, unless you have a system with udev rules
++   that create /dev/serial0 and /dev/serial1, in which case use /dev/serial1
++   instead because it will always be correct.
++
++   If cmdline.txt uses the alias serial0 to refer to the user-accessable port
++   then the firmware will replace with the appropriate port whether or not
++   this overlay is used.
++*/
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&uart0>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart0_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&bt>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&uart1>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart1_pins &bt_pins &fake_bt_cts>;
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&uart0_pins>;
++		__overlay__ {
++			brcm,pins;
++			brcm,function;
++			brcm,pull;
++		};
++	};
++
++	fragment@4 {
++		target = <&uart1_pins>;
++		__overlay__ {
++			brcm,pins = <32 33>;
++			brcm,function = <2>; /* alt5=UART1 */
++			brcm,pull = <0 2>;
++		};
++	};
++
++	fragment@5 {
++		target = <&gpio>;
++		__overlay__ {
++			fake_bt_cts: fake_bt_cts {
++				brcm,pins = <31>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@6 {
++		target-path = "/aliases";
++		__overlay__ {
++			serial0 = "/soc/serial@7e201000";
++			serial1 = "/soc/serial@7e215040";
++		};
++	};
++
++	fragment@7 {
++		target = <&minibt>;
++		minibt_frag: __overlay__ {
++		};
++	};
++
++	__overrides__ {
++		krnbt = <&minibt_frag>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/mmc-overlay.dts b/arch/arm/boot/dts/overlays/mmc-overlay.dts
+new file mode 100644
+index 000000000000..c1a2f691aa1e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mmc-overlay.dts
+@@ -0,0 +1,46 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&mmc>;
++		frag0: __overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&mmc_pins>;
++			bus-width = <4>;
++			brcm,overclock-50 = <0>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			mmc_pins: mmc_pins {
++				brcm,pins = <48 49 50 51 52 53>;
++				brcm,function = <7>; /* alt3 */
++				brcm,pull = <0 2 2 2 2 2>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sdhost>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&mmcnr>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	__overrides__ {
++		overclock_50     = <&frag0>,"brcm,overclock-50:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/mpu6050-overlay.dts b/arch/arm/boot/dts/overlays/mpu6050-overlay.dts
+new file mode 100644
+index 000000000000..1b4c06535687
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mpu6050-overlay.dts
+@@ -0,0 +1,29 @@
++// Definitions for MPU6050
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target = <&i2c1>;
++                __overlay__ {
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++                        status = "okay";
++                        clock-frequency = <400000>;
++
++                        mpu6050: mpu6050@68 {
++                                compatible = "invensense,mpu6050";
++                                reg = <0x68>;
++                                interrupt-parent = <&gpio>;
++                                interrupts = <4 1>;
++                        };
++                };
++        };
++
++        __overrides__ {
++                interrupt = <&mpu6050>,"interrupts:0";
++                addr = <&mpu6050>,"reg:0";
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/mz61581-overlay.dts b/arch/arm/boot/dts/overlays/mz61581-overlay.dts
+new file mode 100644
+index 000000000000..6e00e8b2ddf2
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mz61581-overlay.dts
+@@ -0,0 +1,117 @@
++/*
++ * Device Tree overlay for MZ61581-PI-EXT 2014.12.28 by Tontec
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			mz61581_pins: mz61581_pins {
++				brcm,pins = <4 15 18 25>;
++				brcm,function = <0 1 1 1>; /* in out out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mz61581: mz61581@0{
++				compatible = "samsung,s6d02a1";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mz61581_pins>;
++
++				spi-max-frequency = <128000000>;
++				spi-cpol;
++				spi-cpha;
++
++				width = <320>;
++				height = <480>;
++				rotate = <270>;
++				bgr;
++				fps = <30>;
++				buswidth = <8>;
++				txbuflen = <32768>;
++
++				reset-gpios = <&gpio 15 1>;
++				dc-gpios = <&gpio 25 0>;
++				led-gpios = <&gpio 18 0>;
++
++				init = <0x10000b0 00
++					0x1000011
++					0x20000ff
++					0x10000b3 0x02 0x00 0x00 0x00
++					0x10000c0 0x13 0x3b 0x00 0x02 0x00 0x01 0x00 0x43
++					0x10000c1 0x08 0x16 0x08 0x08
++					0x10000c4 0x11 0x07 0x03 0x03
++					0x10000c6 0x00
++					0x10000c8 0x03 0x03 0x13 0x5c 0x03 0x07 0x14 0x08 0x00 0x21 0x08 0x14 0x07 0x53 0x0c 0x13 0x03 0x03 0x21 0x00
++					0x1000035 0x00
++					0x1000036 0xa0
++					0x100003a 0x55
++					0x1000044 0x00 0x01
++					0x10000d0 0x07 0x07 0x1d 0x03
++					0x10000d1 0x03 0x30 0x10
++					0x10000d2 0x03 0x14 0x04
++					0x1000029
++					0x100002c>;
++
++				/* This is a workaround to make sure the init sequence slows down and doesn't fail */
++				debug = <3>;
++			};
++
++			mz61581_ts: mz61581_ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <4 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 4 0>;
++
++				ti,x-plate-ohms = /bits/ 16 <60>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++	__overrides__ {
++		speed =   <&mz61581>, "spi-max-frequency:0";
++		rotate =  <&mz61581>, "rotate:0";
++		fps =     <&mz61581>, "fps:0";
++		txbuflen = <&mz61581>, "txbuflen:0";
++		debug =   <&mz61581>, "debug:0";
++		xohms =   <&mz61581_ts>,"ti,x-plate-ohms;0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ov5647-overlay.dts b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+new file mode 100644
+index 000000000000..d7ed4703c9b0
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -0,0 +1,94 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for OV5647 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ov5647: ov5647@36 {
++				compatible = "ovti,ov5647";
++				reg = <0x36>;
++				status = "okay";
++
++				pwdn-gpios = <&gpio 41 1>, <&gpio 32 1>;
++				clocks = <&ov5647_clk>;
++
++				rotation = <0>;
++				orientation = <2>;
++
++				port {
++					ov5647_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <297000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&ov5647_0>;
++					data-lanes = <1 2>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target-path="/__overrides__";
++		__overlay__ {
++			cam0-pwdn-ctrl = <&ov5647>,"pwdn-gpios:0";
++			cam0-pwdn      = <&ov5647>,"pwdn-gpios:4";
++			cam0-led-ctrl  = <&ov5647>,"pwdn-gpios:12";
++			cam0-led       = <&ov5647>,"pwdn-gpios:16";
++		};
++	};
++
++	fragment@5 {
++		target-path = "/";
++		__overlay__ {
++			ov5647_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <25000000>;
++			};
++		};
++	};
++
++	__overrides__ {
++		rotation = <&ov5647>,"rotation:0";
++		orientation = <&ov5647>,"orientation:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ov7251-overlay.dts b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+new file mode 100644
+index 000000000000..09dbeda39d06
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+@@ -0,0 +1,113 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for OV7251 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ov7251: ov7251@60 {
++				compatible = "ovti,ov7251";
++				reg = <0x60>;
++				status = "okay";
++
++				clocks = <&ov7251_clk>;
++				clock-names = "xclk";
++				clock-frequency = <24000000>;
++
++				vdddo-supply = <&ov7251_dovdd>;
++				vdda-supply = <&cam1_reg>;
++				vddd-supply = <&ov7251_dvdd>;
++
++				rotation = <0>;
++				orientation = <2>;
++
++				port {
++					ov7251_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <456000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&ov7251_0>;
++					data-lanes = <1>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path="/";
++		__overlay__ {
++			ov7251_dovdd: fixedregulator@1 {
++				compatible = "regulator-fixed";
++				regulator-name = "ov7251_dovdd";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++			};
++			ov7251_dvdd: fixedregulator@2 {
++				compatible = "regulator-fixed";
++				regulator-name = "ov7251_dvdd";
++				regulator-min-microvolt = <1200000>;
++				regulator-max-microvolt = <1200000>;
++			};
++			ov7251_clk: ov7251-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24000000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&cam1_reg>;
++		__overlay__ {
++			status = "okay";
++			regulator-name = "ov7251_avdd";
++			regulator-min-microvolt = <2800000>;
++			regulator-max-microvolt = <2800000>;
++		};
++	};
++
++	__overrides__ {
++		rotation = <&ov7251>,"rotation:0";
++		orientation = <&ov7251>,"orientation:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ov9281-overlay.dts b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
+new file mode 100644
+index 000000000000..277236c03358
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
+@@ -0,0 +1,113 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for OV9281 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ov9281: ov9281@60 {
++				compatible = "ovti,ov9281";
++				reg = <0x60>;
++				status = "okay";
++
++				clocks = <&ov9281_clk>;
++				clock-names = "xvclk";
++
++				avdd-supply = <&cam1_reg>;
++				dovdd-supply = <&ov9281_dovdd>;
++				dvdd-supply = <&ov9281_dvdd>;
++
++				rotation = <0>;
++				orientation = <2>;
++
++				port {
++					ov9281_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <400000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&ov9281_0>;
++					data-lanes = <1 2>;
++					clock-noncontinuous;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path="/";
++		__overlay__ {
++			ov9281_dovdd: fixedregulator@1 {
++				compatible = "regulator-fixed";
++				regulator-name = "ov9281_dovdd";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++			};
++			ov9281_dvdd: fixedregulator@2 {
++				compatible = "regulator-fixed";
++				regulator-name = "ov9281_dvdd";
++				regulator-min-microvolt = <1200000>;
++				regulator-max-microvolt = <1200000>;
++			};
++			ov9281_clk: ov9281-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24000000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&cam1_reg>;
++		__overlay__ {
++			status = "okay";
++			regulator-name = "ov9281_avdd";
++			regulator-min-microvolt = <2800000>;
++			regulator-max-microvolt = <2800000>;
++		};
++	};
++
++	__overrides__ {
++		rotation = <&ov9281>,"rotation:0";
++		orientation = <&ov9281>,"orientation:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/overlay_map.dts b/arch/arm/boot/dts/overlays/overlay_map.dts
+new file mode 100644
+index 000000000000..bc6e3bce22c7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/overlay_map.dts
+@@ -0,0 +1,158 @@
++/dts-v1/;
++
++/ {
++	bmp085_i2c-sensor {
++		deprecated = "use i2c-sensor,bmp085";
++	};
++
++	highperi {
++		bcm2711;
++	};
++
++	i2c0-bcm2708 {
++		deprecated = "use i2c0";
++	};
++
++	i2c1-bcm2708 {
++		deprecated = "use i2c1";
++	};
++
++	i2c3 {
++		bcm2711;
++	};
++
++	i2c4 {
++		bcm2711;
++	};
++
++	i2c5 {
++		bcm2711;
++	};
++
++	i2c6 {
++		bcm2711;
++	};
++
++	lirc-rpi {
++		deprecated = "use gpio-ir";
++	};
++
++	pcie-32bit-dma {
++		bcm2711;
++	};
++
++	pi3-act-led {
++		renamed = "act-led";
++	};
++
++	pi3-disable-bt {
++		renamed = "disable-bt";
++	};
++
++	pi3-disable-wifi {
++		renamed = "disable-wifi";
++	};
++
++	pi3-miniuart-bt {
++		renamed = "miniuart-bt";
++	};
++
++	rpivid-v4l2 {
++		bcm2711;
++	};
++
++	sdio-1bit {
++		deprecated = "use sdio,bus_width=1,gpios_22_25";
++	};
++
++	sdtweak {
++		deprecated = "use 'dtparam=sd_poll_once' etc.";
++	};
++
++	spi0-cs {
++		renamed = "spi0-2cs";
++	};
++
++	spi0-hw-cs {
++		deprecated = "no longer necessary";
++	};
++
++	spi3-1cs {
++		bcm2711;
++	};
++
++	spi3-2cs {
++		bcm2711;
++	};
++
++	spi4-1cs {
++		bcm2711;
++	};
++
++	spi4-2cs {
++		bcm2711;
++	};
++
++	spi5-1cs {
++		bcm2711;
++	};
++
++	spi5-2cs {
++		bcm2711;
++	};
++
++	spi6-1cs {
++		bcm2711;
++	};
++
++	spi6-2cs {
++		bcm2711;
++	};
++
++	uart2 {
++		bcm2711;
++	};
++
++	uart3 {
++		bcm2711;
++	};
++
++	uart4 {
++		bcm2711;
++	};
++
++	uart5 {
++		bcm2711;
++	};
++
++	upstream {
++		bcm2835;
++		bcm2711 = "upstream-pi4";
++	};
++
++	upstream-aux-interrupt {
++		deprecated = "no longer necessary";
++	};
++
++	upstream-pi4 {
++		bcm2711;
++	};
++
++	vc4-fkms-v3d {
++		bcm2835;
++		bcm2711 = "vc4-fkms-v3d-pi4";
++	};
++
++	vc4-fkms-v3d-pi4 {
++		bcm2711;
++	};
++
++	vc4-kms-v3d {
++		bcm2835;
++		bcm2711 = "vc4-kms-v3d-pi4";
++	};
++
++	vc4-kms-v3d-pi4 {
++		bcm2711;
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/papirus-overlay.dts b/arch/arm/boot/dts/overlays/papirus-overlay.dts
+new file mode 100644
+index 000000000000..7b6bcfd49c86
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/papirus-overlay.dts
+@@ -0,0 +1,89 @@
++/* PaPiRus ePaper Screen by Pi Supply */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			display_temp: lm75@48 {
++				compatible = "lm75b";
++				reg = <0x48>;
++				status = "okay";
++				#thermal-sensor-cells = <0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			thermal-zones {
++				display {
++					polling-delay-passive = <0>;
++					polling-delay = <0>;
++					thermal-sensors = <&display_temp>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++
++			spidev@0{
++				status = "disabled";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			repaper_pins: repaper_pins {
++				brcm,pins = <14 15 23 24 25>;
++				brcm,function = <1 1 1 1 0>; /* out out out out in */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			repaper: repaper@0{
++				compatible = "not_set";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&repaper_pins>;
++
++				spi-max-frequency = <8000000>;
++
++				panel-on-gpios = <&gpio 23 0>;
++				border-gpios = <&gpio 14 0>;
++				discharge-gpios = <&gpio 15 0>;
++				reset-gpios = <&gpio 24 0>;
++				busy-gpios = <&gpio 25 0>;
++
++				repaper-thermal-zone = "display";
++			};
++		};
++	};
++
++	__overrides__ {
++		panel = <&repaper>, "compatible";
++		speed = <&repaper>, "spi-max-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pca953x-overlay.dts b/arch/arm/boot/dts/overlays/pca953x-overlay.dts
+new file mode 100644
+index 000000000000..8b6ee44665ce
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pca953x-overlay.dts
+@@ -0,0 +1,240 @@
++// Definitions for NXP PCA953x family of I2C GPIO controllers on ARM I2C bus.
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pca: pca@20 {
++				compatible = "nxp,pca9534";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca6416";
++		};
++	};
++	fragment@2 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9505";
++		};
++	};
++	fragment@3 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9535";
++		};
++	};
++	fragment@4 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9536";
++		};
++	};
++	fragment@5 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9537";
++		};
++	};
++	fragment@6 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9538";
++		};
++	};
++	fragment@7 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9539";
++		};
++	};
++	fragment@8 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9554";
++		};
++	};
++	fragment@9 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9555";
++		};
++	};
++	fragment@10 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9556";
++		};
++	};
++	fragment@11 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9557";
++		};
++	};
++	fragment@12 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9574";
++		};
++	};
++	fragment@13 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9575";
++		};
++	};
++	fragment@14 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca9698";
++		};
++	};
++	fragment@15 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca16416";
++		};
++	};
++	fragment@16 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca16524";
++		};
++	};
++	fragment@17 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "nxp,pca19555a";
++		};
++	};
++	fragment@18 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "maxim,max7310";
++		};
++	};
++	fragment@19 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "maxim,max7312";
++		};
++	};
++	fragment@20 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "maxim,max7313";
++		};
++	};
++	fragment@21 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "maxim,max7315";
++		};
++	};
++	fragment@22 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "ti,pca6107";
++		};
++	};
++	fragment@23 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "ti,tca6408";
++		};
++	};
++	fragment@24 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "ti,tca6416";
++		};
++	};
++	fragment@25 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "ti,tca6424";
++		};
++	};
++	fragment@26 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "ti,tca9539";
++		};
++	};
++	fragment@27 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "ti,tca9554";
++		};
++	};
++	fragment@28 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "onnn,cat9554";
++		};
++	};
++	fragment@29 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "onnn,pca9654";
++		};
++	};
++	fragment@30 {
++		target = <&pca>;
++		__dormant__ {
++			compatible = "exar,xra1202";
++		};
++	};
++
++	__overrides__ {
++		addr = <&pca>,"reg:0";
++		pca6416 = <0>, "+1";
++		pca9505 = <0>, "+2";
++		pca9535 = <0>, "+3";
++		pca9536 = <0>, "+4";
++		pca9537 = <0>, "+5";
++		pca9538 = <0>, "+6";
++		pca9539 = <0>, "+7";
++		pca9554 = <0>, "+8";
++		pca9555 = <0>, "+9";
++		pca9556 = <0>, "+10";
++		pca9557 = <0>, "+11";
++		pca9574 = <0>, "+12";
++		pca9575 = <0>, "+13";
++		pca9698 = <0>, "+14";
++		pca16416 = <0>, "+15";
++		pca16524 = <0>, "+16";
++		pca19555a = <0>, "+17";
++		max7310 = <0>, "+18";
++		max7312 = <0>, "+19";
++		max7313 = <0>, "+20";
++		max7315 = <0>, "+21";
++		pca6107 = <0>, "+22";
++		tca6408 = <0>, "+23";
++		tca6416 = <0>, "+24";
++		tca6424 = <0>, "+25";
++		tca9539 = <0>, "+26";
++		tca9554 = <0>, "+27";
++		cat9554 = <0>, "+28";
++		pca9654 = <0>, "+29";
++		xra1202 = <0>, "+30";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pcie-32bit-dma-overlay.dts b/arch/arm/boot/dts/overlays/pcie-32bit-dma-overlay.dts
+new file mode 100644
+index 000000000000..cca3e83721b7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pcie-32bit-dma-overlay.dts
+@@ -0,0 +1,18 @@
++/*
++ * pcie-32bit-dma-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target-path = "/aliases";
++		__overlay__ {
++			pcie0 = "";
++		};
++	};
++
++};
+diff --git a/arch/arm/boot/dts/overlays/pibell-overlay.dts b/arch/arm/boot/dts/overlays/pibell-overlay.dts
+new file mode 100644
+index 000000000000..9333a9b09772
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pibell-overlay.dts
+@@ -0,0 +1,81 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++
++    fragment@0 {
++        target-path = "/";
++        __overlay__ {
++            codec_out: spdif-transmitter {
++                #address-cells = <0>;
++                #size-cells = <0>;
++                #sound-dai-cells = <0>;
++                compatible = "linux,spdif-dit";
++                status = "okay";
++            };
++
++            codec_in: card-codec {
++                #sound-dai-cells = <0>;
++                compatible = "invensense,ics43432";
++                status = "okay";
++            };
++        };
++    };
++
++    fragment@1 {
++        target = <&i2s>;
++        __overlay__ {
++            #sound-dai-cells = <0>;
++            status = "okay";
++        };
++    };
++
++    fragment@2 {
++        target = <&sound>;
++        snd: __overlay__ {
++            compatible = "simple-audio-card";
++            simple-audio-card,name = "PiBell";
++
++            status="okay";
++
++            capture_link: simple-audio-card,dai-link@0 {
++                format = "i2s";
++
++                r_cpu_dai: cpu {
++                    sound-dai = <&i2s>;
++
++/* example TDM slot configuration
++                    dai-tdm-slot-num = <2>;
++                    dai-tdm-slot-width = <32>;
++*/
++                };
++
++                r_codec_dai: codec {
++                    sound-dai = <&codec_in>;
++                };
++            };
++
++            playback_link: simple-audio-card,dai-link@1 {
++                format = "i2s";
++
++                p_cpu_dai: cpu {
++                    sound-dai = <&i2s>;
++
++/* example TDM slot configuration
++                    dai-tdm-slot-num = <2>;
++                    dai-tdm-slot-width = <32>;
++*/
++                };
++
++                p_codec_dai: codec {
++                    sound-dai = <&codec_out>;
++                };
++            };
++        };
++    };
++
++    __overrides__ {
++        alsaname = <&snd>, "simple-audio-card,name";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/pifacedigital-overlay.dts b/arch/arm/boot/dts/overlays/pifacedigital-overlay.dts
+new file mode 100644
+index 000000000000..532a858683d6
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pifacedigital-overlay.dts
+@@ -0,0 +1,144 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * PiFace Digital, Device Tree Overlay.
++ * Copyright (C) 2020 Thomas Preston <thomas.preston@codethink.co.uk>
++ *
++ * The PiFace Digital is a convenient breakout board for the Microchip mcp23s17
++ * SPI GPIO port expander.
++ *
++ * The first eight GPIOs 0..7 (bank A) are connected to eight output terminals
++ * and LEDs, plus two relays on the first two outputs. These output loads are
++ * active-high.
++ *
++ * The next eight GPIOs 8..15 (bank B) are connected to eight input terminals
++ * with four on-board switches connecting them to ground. Inputs devices are
++ * therefore expected to bridge terminals to ground, so the mcp23s17 pullups are
++ * activated for GPIO bank B.
++ *
++ * On PiFace Digital, the mcp23s17 is connected to the Raspberry Pi's SPI0 CS0
++ * bus. Each SPI bus supports up to eight addressable child devices. The PiFace
++ * Digital only supports addresses 0-4, which can be configured by jumpers JP1
++ * and JP2.
++ *
++ * You can tell the driver about these jumper configurations with the
++ * spi-present-mask bitmask:
++ *
++ *     | JP1 | JP2 | dtoverlay line in /boot/config.txt         |
++ *     | --- | --- | ------------------------------------------ |
++ *     |  0  |  0  | dtoverlay=pifacedigital                    |
++ *     |  0  |  0  | dtoverlay=pifacedigital:spi-present-mask=1 |
++ *     |  0  |  1  | dtoverlay=pifacedigital:spi-present-mask=2 |
++ *     |  1  |  0  | dtoverlay=pifacedigital:spi-present-mask=4 |
++ *     |  1  |  1  | dtoverlay=pifacedigital:spi-present-mask=8 |
++ *
++ * # Example
++ * Set the dtoverlay config in /boot/config.txt and power off the Raspberry Pi:
++ *
++ *     $ grep pifacedigital /boot/config.txt
++ *     dtoverlay=pifacedigital
++ *     $ sudo systemctl poweroff
++ *
++ * Attach the PiFace Digital and power on the Raspberry Pi.
++ * Then use the libgpiod tools to query the device:
++ *
++ *     $ sudo apt install gpiod
++ *     $ gpiodetect | grep mcp23s17
++ *     gpiochip2 [mcp23s17.0] (16 lines)
++ *
++ * Set GPIO outputs 0, 2 and 5:
++ *
++ *     $ gpioset gpiochip2 0=1 2=1 5=1
++ *
++ * Get GPIO status (input GPIO 8..15 are high, because they are active-low):
++ *
++ *     $ gpioget gpiochip2 {8..15}
++ *     1 1 1 1 1 1 1 1
++ *
++ * And even monitor interrupts:
++ *
++ *     $ gpiomon gpiochip2 {8..15}
++ *     event: FALLING EDGE offset: 11 timestamp: [1597361662.926741667]
++ *     event:  RISING EDGE offset: 11 timestamp: [1597361663.062555051]
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	/* Disable exposing /dev/spidev0.0 */
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	/* Add the PiFace Digital device node to the spi0.0 device. */
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pfdigital: pifacedigital@0 {
++				compatible = "microchip,mcp23s17";
++				reg = <0>;
++
++				/* Set devices present with 8-bit mask. */
++				microchip,spi-present-mask = <0x01>;
++				spi-max-frequency = <500000>;
++
++				gpio-controller;
++				#gpio-cells = <2>;
++
++				/* This device can pass through interrupts. */
++				interrupt-controller;
++				#interrupt-cells = <2>;
++
++				/* INTB is connected to GPIO 25.
++				 * 0x8 active-low level-sensitive
++				 */
++				interrupts = <25 0x8>;
++				interrupt-parent = <&gpio>;
++
++				/* Configure pull-ups on bank B GPIOs */
++				pinctrl-0 = <&pfdigital_irq &pfdigital_pullups>;
++				pinctrl-names = "default";
++				pfdigital_pullups: pinmux {
++					pins =
++						"gpio8",
++						"gpio9",
++						"gpio10",
++						"gpio11",
++						"gpio12",
++						"gpio13",
++						"gpio14",
++						"gpio15";
++					bias-pull-up;
++				};
++			};
++		};
++	};
++
++	/* PiFace Digital mcp23s17 INTB pin is connected to GPIO 25. The INTB
++	 * pin is configured active-low (0 on interrupt), so expect to see
++	 * FALLING_EDGE when inputs are bridged to ground (switch is pressed).
++	 */
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			pfdigital_irq: pifacedigital_irq {
++				brcm,pins = <25>;
++				brcm,function = <0>; /* input */
++			};
++		};
++	};
++
++	__overrides__ {
++		spi-present-mask = <&pfdigital>, "microchip,spi-present-mask:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pifi-40-overlay.dts b/arch/arm/boot/dts/overlays/pifi-40-overlay.dts
+new file mode 100644
+index 000000000000..51a20e54977f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pifi-40-overlay.dts
+@@ -0,0 +1,50 @@
++// Definitions for PiFi-40 Amp
++/dts-v1/;
++/plugin/;
++#include <dt-bindings/gpio/gpio.h>
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			tas5711l: audio-codec@1a {
++				compatible = "ti,tas5711";
++				reg = <0x1a>;
++				#sound-dai-cells = <0>;
++				sound-name-prefix = "Left";
++				status = "okay";
++			};
++
++			tas5711r: audio-codec@1b {
++				compatible = "ti,tas5711";
++				reg = <0x1b>;
++				#sound-dai-cells = <0>;
++				sound-name-prefix = "Right";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		pifi_40: __overlay__ {
++			compatible = "pifi,pifi-40";
++			audio-codec = <&tas5711l &tas5711r>;
++			i2s-controller = <&i2s>;
++			pdn-gpios = <&gpio 23 1>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pifi-dac-hd-overlay.dts b/arch/arm/boot/dts/overlays/pifi-dac-hd-overlay.dts
+new file mode 100644
+index 000000000000..67f50db7861a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pifi-dac-hd-overlay.dts
+@@ -0,0 +1,49 @@
++// Overlay for PiFi-DAC-HD
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells =<0>;
++
++			pcm5142: pcm5142@4c {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5142";
++				reg = <0x4c>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "simple-audio-card";
++			simple-audio-card,name = "PiFi-DAC-HD";
++			status = "okay";
++
++			simple-audio-card,dai-link@1 {
++				format = "i2s";
++				cpu {
++					sound-dai = <&i2s>;
++				};
++				codec {
++					sound-dai = <&pcm5142>;
++				};
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pifi-dac-zero-overlay.dts b/arch/arm/boot/dts/overlays/pifi-dac-zero-overlay.dts
+new file mode 100644
+index 000000000000..645ea74cb435
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pifi-dac-zero-overlay.dts
+@@ -0,0 +1,49 @@
++// Overlay for PiFi-DAC-Zero
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "simple-audio-card";
++			simple-audio-card,name = "PiFi-DAC-Zero";
++			status = "okay";
++
++			simple-audio-card,dai-link@1 {
++				format = "i2s";
++
++				cpu {
++					sound-dai = <&i2s>;
++					dai-tdm-slot-num = <2>;
++					dai-tdm-slot-width = <32>;
++				};
++
++				codec {
++					sound-dai = <&codec_out>;
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			codec_out: pcm5102a-codec {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5102a";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2s>;
++		__overlay__ {
++			#sound-dai-cells = <0>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pifi-mini-210-overlay.dts b/arch/arm/boot/dts/overlays/pifi-mini-210-overlay.dts
+new file mode 100644
+index 000000000000..963597d611b5
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pifi-mini-210-overlay.dts
+@@ -0,0 +1,42 @@
++// Definitions for PiFi Mini 210
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			tas5711@1a {
++				#sound-dai-cells = <0>;
++				compatible = "ti,tas5711";
++				reg = <0x1a>;
++				status = "okay";
++				pdn-gpios = <&gpio 23 1>;
++				reset-gpios = <&gpio 24 1>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "pifi,pifi-mini-210";
++			i2s-controller = <&i2s>;
++
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/piglow-overlay.dts b/arch/arm/boot/dts/overlays/piglow-overlay.dts
+new file mode 100644
+index 000000000000..075bceef158c
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/piglow-overlay.dts
+@@ -0,0 +1,97 @@
++// Definitions for SN3218 LED driver from Si-En Technology on PiGlow
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sn3218@54 {
++				compatible = "si-en,sn3218";
++				reg = <0x54>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++				status = "okay";
++
++				led@1 {
++					reg = <1>;
++					label = "piglow:red:led1";
++				};
++				led@2 {
++					reg = <2>;
++					label = "piglow:orange:led2";
++				};
++				led@3 {
++					reg = <3>;
++					label = "piglow:yellow:led3";
++				};
++				led@4 {
++					reg = <4>;
++					label = "piglow:green:led4";
++				};
++				led@5 {
++					reg = <5>;
++					label = "piglow:blue:led5";
++				};
++				led@6 {
++					reg = <6>;
++					label = "piglow:green:led6";
++				};
++				led@7 {
++					reg = <7>;
++					label = "piglow:red:led7";
++				};
++				led@8 {
++					reg = <8>;
++					label = "piglow:orange:led8";
++				};
++				led@9 {
++					reg = <9>;
++					label = "piglow:yellow:led9";
++				};
++				led@10 {
++					reg = <10>;
++					label = "piglow:white:led10";
++				};
++				led@11 {
++					reg = <11>;
++					label = "piglow:white:led11";
++				};
++				led@12 {
++					reg = <12>;
++					label = "piglow:blue:led12";
++				};
++				led@13 {
++					reg = <13>;
++					label = "piglow:white:led13";
++				};
++				led@14 {
++					reg = <14>;
++					label = "piglow:green:led14";
++				};
++				led@15 {
++					reg = <15>;
++					label = "piglow:blue:led15";
++				};
++				led@16 {
++					reg = <16>;
++					label = "piglow:yellow:led16";
++				};
++				led@17 {
++					reg = <17>;
++					label = "piglow:orange:led17";
++				};
++				led@18 {
++					reg = <18>;
++					label = "piglow:red:led18";
++				};
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/piscreen-overlay.dts b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
+new file mode 100644
+index 000000000000..1ac75a248fab
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
+@@ -0,0 +1,102 @@
++/*
++ * Device Tree overlay for PiScreen 3.5" display shield by Ozzmaker
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			piscreen_pins: piscreen_pins {
++				brcm,pins = <17 25 24 22>;
++				brcm,function = <0 1 1 1>; /* in out out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			piscreen: piscreen@0{
++				compatible = "ilitek,ili9486";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&piscreen_pins>;
++
++				spi-max-frequency = <24000000>;
++				rotate = <270>;
++				bgr;
++				fps = <30>;
++				buswidth = <8>;
++				regwidth = <16>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				led-gpios = <&gpio 22 0>;
++				debug = <0>;
++
++				init = <0x10000b0 0x00
++				        0x1000011
++					0x20000ff
++					0x100003a 0x55
++					0x1000036 0x28
++					0x10000c2 0x44
++					0x10000c5 0x00 0x00 0x00 0x00
++					0x10000e0 0x0f 0x1f 0x1c 0x0c 0x0f 0x08 0x48 0x98 0x37 0x0a 0x13 0x04 0x11 0x0d 0x00
++					0x10000e1 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
++					0x10000e2 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
++					0x1000011
++					0x1000029>;
++			};
++
++			piscreen_ts: piscreen-ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <17 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 17 0>;
++				ti,swap-xy;
++				ti,x-plate-ohms = /bits/ 16 <100>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++	__overrides__ {
++		speed =		<&piscreen>,"spi-max-frequency:0";
++		rotate =	<&piscreen>,"rotate:0";
++		fps =		<&piscreen>,"fps:0";
++		debug =		<&piscreen>,"debug:0";
++		xohms =		<&piscreen_ts>,"ti,x-plate-ohms;0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts b/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
+new file mode 100644
+index 000000000000..9d2b51101969
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
+@@ -0,0 +1,106 @@
++ /*
++ * Device Tree overlay for PiScreen2 3.5" TFT with resistive touch  by Ozzmaker.com
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			piscreen2_pins: piscreen2_pins {
++				brcm,pins = <17 25 24 22>;
++				brcm,function = <0 1 1 1>; /* in out out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			piscreen2: piscreen2@0{
++				compatible = "ilitek,ili9486";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&piscreen2_pins>;
++				bgr;
++				spi-max-frequency = <64000000>;
++				rotate = <90>;
++				fps = <30>;
++				buswidth = <8>;
++				regwidth = <16>;
++				txbuflen = <32768>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				led-gpios = <&gpio 22 0>;
++				debug = <0>;
++
++                                init = <0x10000b0 0x00
++                                        0x1000011
++                                        0x20000ff
++                                        0x100003a 0x55
++                                        0x1000036 0x28
++                                        0x10000c0 0x11 0x09
++                                        0x10000c1 0x41
++                                        0x10000c5 0x00 0x00 0x00 0x00
++                                        0x10000b6 0x00 0x02
++                                        0x10000f7 0xa9 0x51 0x2c 0x2
++                                        0x10000be 0x00 0x04
++                                        0x10000e9 0x00
++                                        0x1000011
++                                        0x1000029>;
++
++			};
++
++			piscreen2_ts: piscreen2-ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <17 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 17 0>;
++				ti,swap-xy;
++				ti,x-plate-ohms = /bits/ 16 <100>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++	__overrides__ {
++		speed =		<&piscreen2>,"spi-max-frequency:0";
++		rotate =	<&piscreen2>,"rotate:0";
++		fps =		<&piscreen2>,"fps:0";
++		debug =		<&piscreen2>,"debug:0";
++		xohms =		<&piscreen2_ts>,"ti,x-plate-ohms;0";
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/pisound-overlay.dts b/arch/arm/boot/dts/overlays/pisound-overlay.dts
+new file mode 100644
+index 000000000000..49efb2b768fb
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pisound-overlay.dts
+@@ -0,0 +1,120 @@
++/*
++ * Pisound Linux kernel module.
++ * Copyright (C) 2016-2017  Vilniaus Blokas UAB, https://blokas.io/pisound
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; version 2 of the
++ * License.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&spi0>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pisound_spi: pisound_spi@0{
++				compatible = "blokaslabs,pisound-spi";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&spi0_pins>;
++				spi-max-frequency = <1000000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target-path = "/";
++		__overlay__ {
++			pcm5102a-codec {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm5102a";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@5 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "blokaslabs,pisound";
++			i2s-controller = <&i2s>;
++			status = "okay";
++
++			pinctrl-0 = <&pisound_button_pins>;
++
++			osr-gpios =
++				<&gpio 13 GPIO_ACTIVE_HIGH>,
++				<&gpio 26 GPIO_ACTIVE_HIGH>,
++				<&gpio 16 GPIO_ACTIVE_HIGH>;
++
++			reset-gpios =
++				<&gpio 12 GPIO_ACTIVE_HIGH>,
++				<&gpio 24 GPIO_ACTIVE_HIGH>;
++
++			data_available-gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
++
++			button-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
++		};
++	};
++
++	fragment@6 {
++		target = <&gpio>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pisound_button_pins>;
++
++			pisound_button_pins: pisound_button_pins {
++				brcm,pins = <17>;
++				brcm,function = <0>; // Input
++				brcm,pull = <2>; // Pull-Up
++			};
++		};
++	};
++
++	fragment@7 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pitft22-overlay.dts b/arch/arm/boot/dts/overlays/pitft22-overlay.dts
+new file mode 100644
+index 000000000000..589ad13795b1
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pitft22-overlay.dts
+@@ -0,0 +1,69 @@
++/*
++ * Device Tree overlay for pitft by Adafruit
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target = <&spi0>;
++                __overlay__ {
++                        status = "okay";
++
++                        spidev@0{
++                                status = "disabled";
++                        };
++
++                        spidev@1{
++                                status = "disabled";
++                        };
++                };
++        };
++
++        fragment@1 {
++                target = <&gpio>;
++                __overlay__ {
++                        pitft_pins: pitft_pins {
++                                brcm,pins = <25>;
++                                brcm,function = <1>; /* out */
++                                brcm,pull = <0>; /* none */
++                        };
++                };
++        };
++
++        fragment@2 {
++                target = <&spi0>;
++                __overlay__ {
++                        /* needed to avoid dtc warning */
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++
++                        pitft: pitft@0{
++                                compatible = "ilitek,ili9340";
++                                reg = <0>;
++                                pinctrl-names = "default";
++                                pinctrl-0 = <&pitft_pins>;
++
++                                spi-max-frequency = <32000000>;
++                                rotate = <90>;
++                                fps = <25>;
++                                bgr;
++                                buswidth = <8>;
++                                dc-gpios = <&gpio 25 0>;
++                                debug = <0>;
++                        };
++
++                };
++        };
++
++        __overrides__ {
++                speed =   <&pitft>,"spi-max-frequency:0";
++                rotate =  <&pitft>,"rotate:0";
++                fps =     <&pitft>,"fps:0";
++                debug =   <&pitft>,"debug:0";
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts b/arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts
+new file mode 100644
+index 000000000000..33901ee1db7a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts
+@@ -0,0 +1,91 @@
++/*
++ * Device Tree overlay for Adafruit PiTFT 2.8" capacitive touch screen
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target = <&spi0>;
++                __overlay__ {
++                        status = "okay";
++                };
++        };
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++        fragment@2 {
++                target = <&gpio>;
++                __overlay__ {
++                        pitft_pins: pitft_pins {
++                                brcm,pins = <24 25>;
++                                brcm,function = <0 1>; /* in out */
++                                brcm,pull = <2 0>; /* pullup none */
++                        };
++                };
++        };
++
++        fragment@3 {
++                target = <&spi0>;
++                __overlay__ {
++                        /* needed to avoid dtc warning */
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++
++                        pitft: pitft@0{
++                                compatible = "ilitek,ili9340";
++                                reg = <0>;
++                                pinctrl-names = "default";
++                                pinctrl-0 = <&pitft_pins>;
++
++                                spi-max-frequency = <32000000>;
++                                rotate = <90>;
++                                fps = <25>;
++                                bgr;
++                                buswidth = <8>;
++                                dc-gpios = <&gpio 25 0>;
++                                debug = <0>;
++                        };
++                };
++        };
++
++        fragment@4 {
++                target = <&i2c1>;
++                __overlay__ {
++                        /* needed to avoid dtc warning */
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++
++                        ft6236: ft6236@38 {
++                                compatible = "focaltech,ft6236";
++                                reg = <0x38>;
++
++                                interrupt-parent = <&gpio>;
++                                interrupts = <24 2>;
++                                touchscreen-size-x = <240>;
++                                touchscreen-size-y = <320>;
++                        };
++                };
++        };
++
++        __overrides__ {
++                speed =   <&pitft>,"spi-max-frequency:0";
++                rotate =  <&pitft>,"rotate:0";
++                fps =     <&pitft>,"fps:0";
++                debug =   <&pitft>,"debug:0";
++                touch-sizex = <&ft6236>,"touchscreen-size-x?";
++                touch-sizey = <&ft6236>,"touchscreen-size-y?";
++                touch-invx  = <&ft6236>,"touchscreen-inverted-x?";
++                touch-invy  = <&ft6236>,"touchscreen-inverted-y?";
++                touch-swapxy = <&ft6236>,"touchscreen-swapped-x-y?";
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts b/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
+new file mode 100644
+index 000000000000..4a4a3f44c29d
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
+@@ -0,0 +1,119 @@
++/*
++ * Device Tree overlay for Adafruit PiTFT 2.8" resistive touch screen
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			pitft_pins: pitft_pins {
++				brcm,pins = <24 25>;
++				brcm,function = <0 1>; /* in out */
++				brcm,pull = <2 0>; /* pullup none */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pitft: pitft@0{
++				compatible = "ilitek,ili9340";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&pitft_pins>;
++
++				spi-max-frequency = <32000000>;
++				rotate = <90>;
++				fps = <25>;
++				bgr;
++				buswidth = <8>;
++				dc-gpios = <&gpio 25 0>;
++				debug = <0>;
++			};
++
++			pitft_ts@1 {
++				compatible = "st,stmpe610";
++				reg = <1>;
++
++				spi-max-frequency = <500000>;
++				irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
++				interrupts = <24 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				interrupt-controller;
++
++				stmpe_touchscreen {
++					compatible = "st,stmpe-ts";
++					st,sample-time = <4>;
++					st,mod-12b = <1>;
++					st,ref-sel = <0>;
++					st,adc-freq = <2>;
++					st,ave-ctrl = <3>;
++					st,touch-det-delay = <4>;
++					st,settling = <2>;
++					st,fraction-z = <7>;
++					st,i-drive = <0>;
++				};
++
++				stmpe_gpio: stmpe_gpio {
++					#gpio-cells = <2>;
++					compatible = "st,stmpe-gpio";
++					/*
++					 * only GPIO2 is wired/available
++					 * and it is wired to the backlight
++					 */
++					st,norequest-mask = <0x7b>;
++				};
++			};
++		};
++	};
++
++	fragment@5 {
++		target-path = "/soc";
++		__overlay__ {
++			backlight {
++				compatible = "gpio-backlight";
++				gpios = <&stmpe_gpio 2 0>;
++				default-on;
++			};
++		};
++	};
++
++	__overrides__ {
++		speed =   <&pitft>,"spi-max-frequency:0";
++		rotate =  <&pitft>,"rotate:0";
++		fps =     <&pitft>,"fps:0";
++		debug =   <&pitft>,"debug:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts b/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
+new file mode 100644
+index 000000000000..37629f18a740
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
+@@ -0,0 +1,119 @@
++/*
++ * Device Tree overlay for Adafruit PiTFT 3.5" resistive touch screen
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			pitft_pins: pitft_pins {
++				brcm,pins = <24 25>;
++				brcm,function = <0 1>; /* in out */
++				brcm,pull = <2 0>; /* pullup none */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pitft: pitft@0{
++				compatible = "himax,hx8357d", "adafruit,yx350hv15";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&pitft_pins>;
++
++				spi-max-frequency = <32000000>;
++				rotate = <90>;
++				fps = <25>;
++				bgr;
++				buswidth = <8>;
++				dc-gpios = <&gpio 25 0>;
++				debug = <0>;
++			};
++
++			pitft_ts@1 {
++				compatible = "st,stmpe610";
++				reg = <1>;
++
++				spi-max-frequency = <500000>;
++				irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
++				interrupts = <24 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				interrupt-controller;
++
++				stmpe_touchscreen {
++					compatible = "st,stmpe-ts";
++					st,sample-time = <4>;
++					st,mod-12b = <1>;
++					st,ref-sel = <0>;
++					st,adc-freq = <2>;
++					st,ave-ctrl = <3>;
++					st,touch-det-delay = <4>;
++					st,settling = <2>;
++					st,fraction-z = <7>;
++					st,i-drive = <0>;
++				};
++
++				stmpe_gpio: stmpe_gpio {
++					#gpio-cells = <2>;
++					compatible = "st,stmpe-gpio";
++					/*
++					 * only GPIO2 is wired/available
++					 * and it is wired to the backlight
++					 */
++					st,norequest-mask = <0x7b>;
++				};
++			};
++		};
++	};
++
++	fragment@5 {
++		target-path = "/soc";
++		__overlay__ {
++			backlight {
++				compatible = "gpio-backlight";
++				gpios = <&stmpe_gpio 2 0>;
++				default-on;
++			};
++		};
++	};
++
++	__overrides__ {
++		speed =   <&pitft>,"spi-max-frequency:0";
++		rotate =  <&pitft>,"rotate:0";
++		fps =     <&pitft>,"fps:0";
++		debug =   <&pitft>,"debug:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts b/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
+new file mode 100644
+index 000000000000..524a1c1d3670
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
+@@ -0,0 +1,38 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			pps: pps@12 {
++				compatible = "pps-gpio";
++				pinctrl-names = "default";
++				pinctrl-0 = <&pps_pins>;
++				gpios = <&gpio 18 0>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			pps_pins: pps_pins@12 {
++				brcm,pins =     <18>;
++				brcm,function = <0>;    // in
++				brcm,pull =     <0>;    // off
++			};
++		};
++	};
++
++	__overrides__ {
++		gpiopin = <&pps>,"gpios:4",
++			  <&pps>,"reg:0",
++			  <&pps_pins>,"brcm,pins:0",
++			  <&pps_pins>,"reg:0";
++		assert_falling_edge = <&pps>,"assert-falling-edge?";
++		capture_clear = <&pps>,"capture-clear?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts b/arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts
+new file mode 100644
+index 000000000000..4ddbbfa04065
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts
+@@ -0,0 +1,49 @@
++/dts-v1/;
++/plugin/;
++
++/*
++This is the 2-channel overlay - only use it if you need both channels.
++
++Legal pin,function combinations for each channel:
++  PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
++  PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
++
++N.B.:
++  1) Pin 18 is the only one available on all platforms, and
++     it is the one used by the I2S audio interface.
++     Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
++  2) The onboard analogue audio output uses both PWM channels.
++  3) So be careful mixing audio and PWM.
++*/
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			pwm_pins: pwm_pins {
++				brcm,pins = <18 19>;
++				brcm,function = <2 2>; /* Alt5 */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&pwm>;
++		frag1: __overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pwm_pins>;
++			assigned-clock-rates = <100000000>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		pin   = <&pwm_pins>,"brcm,pins:0";
++		pin2  = <&pwm_pins>,"brcm,pins:4";
++		func  = <&pwm_pins>,"brcm,function:0";
++		func2 = <&pwm_pins>,"brcm,function:4";
++		clock = <&frag1>,"assigned-clock-rates:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pwm-ir-tx-overlay.dts b/arch/arm/boot/dts/overlays/pwm-ir-tx-overlay.dts
+new file mode 100644
+index 000000000000..119caf746b3b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pwm-ir-tx-overlay.dts
+@@ -0,0 +1,40 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			pwm0_pins: pwm0_pins {
++				brcm,pins = <18>;
++				brcm,function = <2>; /* Alt5 */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&pwm>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pwm0_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target-path = "/";
++		__overlay__ {
++			pwm-ir-transmitter {
++				compatible = "pwm-ir-tx";
++				pwms = <&pwm 0 100>;
++			};
++		};
++	};
++
++	__overrides__ {
++		gpio_pin = <&pwm0_pins>, "brcm,pins:0";
++		func = <&pwm0_pins>,"brcm,function:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/pwm-overlay.dts b/arch/arm/boot/dts/overlays/pwm-overlay.dts
+new file mode 100644
+index 000000000000..92876ab3bc8c
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pwm-overlay.dts
+@@ -0,0 +1,45 @@
++/dts-v1/;
++/plugin/;
++
++/*
++Legal pin,function combinations for each channel:
++  PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
++  PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
++
++N.B.:
++  1) Pin 18 is the only one available on all platforms, and
++     it is the one used by the I2S audio interface.
++     Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
++  2) The onboard analogue audio output uses both PWM channels.
++  3) So be careful mixing audio and PWM.
++*/
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			pwm_pins: pwm_pins {
++				brcm,pins = <18>;
++				brcm,function = <2>; /* Alt5 */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&pwm>;
++		frag1: __overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pwm_pins>;
++			assigned-clock-rates = <100000000>;
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		pin   = <&pwm_pins>,"brcm,pins:0";
++		func  = <&pwm_pins>,"brcm,function:0";
++		clock = <&frag1>,"assigned-clock-rates:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/qca7000-overlay.dts b/arch/arm/boot/dts/overlays/qca7000-overlay.dts
+new file mode 100644
+index 000000000000..f695f36024fa
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/qca7000-overlay.dts
+@@ -0,0 +1,55 @@
++// Overlay for the Qualcomm Atheros QCA7000 on PLC Stamp micro EVK
++// Visit: https://in-tech-smartcharging.com/products/evaluation-tools/plc-stamp-micro-2-evaluation-board for details
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			eth1: qca7000@0 {
++				compatible = "qca,qca7000";
++				reg = <0>; /* CE0 */
++				pinctrl-names = "default";
++				pinctrl-0 = <&eth1_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <23 0x1>; /* rising edge */
++				spi-max-frequency = <12000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			eth1_pins: eth1_pins {
++				brcm,pins = <23>;
++				brcm,function = <0>; /* in */
++				brcm,pull = <0>; /* none */
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&eth1>, "interrupts:0",
++		          <&eth1_pins>, "brcm,pins:0";
++		speed   = <&eth1>, "spi-max-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts b/arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts
+new file mode 100644
+index 000000000000..5dee70853289
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/qca7000-uart0-overlay.dts
+@@ -0,0 +1,46 @@
++// Overlay for the Qualcomm Atheros QCA7000 on PLC Stamp micro EVK
++// Visit: https://in-tech-smartcharging.com/products/evaluation-tools/plc-stamp-micro-2-evaluation-board for details
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&uart0>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart0_pins>;
++			status = "okay";
++
++			eth2: qca7000 {
++				compatible = "qca,qca7000";
++				current-speed = <115200>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			uart0_pins: uart0_pins {
++				brcm,pins = <14 15>;
++				brcm,function = <4>; /* alt0 */
++				brcm,pull = <0 2>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target-path = "/aliases";
++		__overlay__ {
++			serial0 = "/soc/serial@7e201000";
++			serial1 = "/soc/serial@7e215040";
++		};
++	};
++
++	__overrides__ {
++		baudrate = <&eth2>, "current-speed:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts b/arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts
+new file mode 100644
+index 000000000000..ea1d952734e9
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts
+@@ -0,0 +1,59 @@
++// Device tree overlay for GPIO connected rotary encoder.
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			rotary_pins: rotary_pins@4 {
++				brcm,pins = <4 17>; /* gpio 4 17 */
++				brcm,function = <0 0>; /* input */
++				brcm,pull = <2 2>; /* pull-up */
++			};
++
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			rotary: rotary@4 {
++				compatible = "rotary-encoder";
++				status = "okay";
++				pinctrl-names = "default";
++				pinctrl-0 = <&rotary_pins>;
++				gpios = <&gpio 4 0>, <&gpio 17 0>;
++				linux,axis = <0>; /* REL_X */
++				rotary-encoder,encoding = "gray";
++				rotary-encoder,steps = <24>; /* 24 default */
++				rotary-encoder,steps-per-period = <1>; /* corresponds to full period mode. See README */
++			};
++		};
++
++	};  
++
++	__overrides__ {
++		pin_a =		    <&rotary>,"gpios:4",
++				    <&rotary_pins>,"brcm,pins:0",
++				    /* modify reg values to allow multiple instantiation */
++				    <&rotary>,"reg:0",
++				    <&rotary_pins>,"reg:0";
++		pin_b =		    <&rotary>,"gpios:16",
++				    <&rotary_pins>,"brcm,pins:4";
++		relative_axis =     <&rotary>,"rotary-encoder,relative-axis?";
++		linux_axis =        <&rotary>,"linux,axis:0";
++		rollover =          <&rotary>,"rotary-encoder,rollover?";
++		steps-per-period =  <&rotary>,"rotary-encoder,steps-per-period:0";
++		steps =             <&rotary>,"rotary-encoder,steps:0";
++		wakeup =            <&rotary>,"wakeup-source?";
++		encoding =          <&rotary>,"rotary-encoder,encoding";
++                /* legacy parameters*/
++		rotary0_pin_a =     <&rotary>,"gpios:4",
++		                    <&rotary_pins>,"brcm,pins:0";
++		rotary0_pin_b =     <&rotary>,"gpios:16",
++		                    <&rotary_pins>,"brcm,pins:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-backlight-overlay.dts b/arch/arm/boot/dts/overlays/rpi-backlight-overlay.dts
+new file mode 100644
+index 000000000000..cac5e44c6ec5
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-backlight-overlay.dts
+@@ -0,0 +1,21 @@
++/*
++ * Devicetree overlay for mailbox-driven Raspberry Pi DSI Display
++ * backlight controller
++ */
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			rpi_backlight: rpi_backlight {
++				compatible = "raspberrypi,rpi-backlight";
++				firmware = <&firmware>;
++				status = "okay";
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts b/arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts
+new file mode 100644
+index 000000000000..ed0c2745399f
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts
+@@ -0,0 +1,172 @@
++// Definitions for the Cirrus Logic Audio Card
++/dts-v1/;
++/plugin/;
++#include <dt-bindings/pinctrl/bcm2835.h>
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/mfd/arizona.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			wlf_5102_pins: wlf_5102_pins {
++				brcm,pins = <17 22 27>;
++				brcm,function = <
++					BCM2835_FSEL_GPIO_OUT
++					BCM2835_FSEL_GPIO_OUT
++					BCM2835_FSEL_GPIO_IN
++				>;
++			};
++			wlf_8804_pins: wlf_8804_pins {
++				brcm,pins = <8>;
++				brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0_cs_pins>;
++		__overlay__ {
++			brcm,pins = <7>;
++			brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++		};
++	};
++
++
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			rpi_cirrus_reg_1v8: rpi_cirrus_reg_1v8 {
++				compatible = "regulator-fixed";
++				regulator-name = "RPi-Cirrus 1v8";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++				regulator-always-on;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@5 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@6 {
++		target = <&spi0>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++			cs-gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
++
++			wm5102@0{
++				compatible = "wlf,wm5102";
++				reg = <0>;
++
++				pinctrl-names = "default";
++				pinctrl-0 = <&wlf_5102_pins>;
++
++				spi-max-frequency = <500000>;
++
++				interrupt-parent = <&gpio>;
++				interrupts = <27 8>;
++				interrupt-controller;
++				#interrupt-cells = <2>;
++
++				gpio-controller;
++				#gpio-cells = <2>;
++
++				LDOVDD-supply = <&rpi_cirrus_reg_1v8>;
++				AVDD-supply = <&rpi_cirrus_reg_1v8>;
++				DBVDD1-supply = <&rpi_cirrus_reg_1v8>;
++				DBVDD2-supply = <&vdd_3v3_reg>;
++				DBVDD3-supply = <&vdd_3v3_reg>;
++				CPVDD-supply = <&rpi_cirrus_reg_1v8>;
++				SPKVDDL-supply = <&vdd_5v0_reg>;
++				SPKVDDR-supply = <&vdd_5v0_reg>;
++				DCVDD-supply = <&arizona_ldo1>;
++
++				reset-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
++				wlf,ldoena = <&gpio 22 GPIO_ACTIVE_HIGH>;
++				wlf,gpio-defaults = <
++					ARIZONA_GP_DEFAULT
++					ARIZONA_GP_DEFAULT
++					ARIZONA_GP_DEFAULT
++					ARIZONA_GP_DEFAULT
++					ARIZONA_GP_DEFAULT
++				>;
++				wlf,micd-configs = <0 1 0>;
++				wlf,dmic-ref = <
++					ARIZONA_DMIC_MICVDD
++					ARIZONA_DMIC_MICBIAS2
++					ARIZONA_DMIC_MICVDD
++					ARIZONA_DMIC_MICVDD
++				>;
++				wlf,inmode = <
++					ARIZONA_INMODE_DIFF
++					ARIZONA_INMODE_DMIC
++					ARIZONA_INMODE_SE
++					ARIZONA_INMODE_DIFF
++				>;
++				status = "okay";
++
++				arizona_ldo1: ldo1 {
++					regulator-name = "LDO1";
++					// default constraints as in
++					// arizona-ldo1.c
++					regulator-min-microvolt = <1200000>;
++					regulator-max-microvolt = <1800000>;
++				};
++			};
++		};
++	};
++
++	fragment@7 {
++		target = <&i2c1>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			wm8804@3b {
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				status = "okay";
++
++				pinctrl-names = "default";
++				pinctrl-0 = <&wlf_8804_pins>;
++
++				PVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++				wlf,reset-gpio = <&gpio 8 GPIO_ACTIVE_HIGH>;
++			};
++		};
++	};
++
++	fragment@8 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "wlf,rpi-cirrus";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
+new file mode 100644
+index 000000000000..07a915342702
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
+@@ -0,0 +1,34 @@
++// Definitions for RPi DAC
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			pcm1794a-codec {
++				#sound-dai-cells = <0>;
++				compatible = "ti,pcm1794a";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "rpi,rpi-dac";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-display-overlay.dts b/arch/arm/boot/dts/overlays/rpi-display-overlay.dts
+new file mode 100644
+index 000000000000..de87432ff2be
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-display-overlay.dts
+@@ -0,0 +1,91 @@
++/*
++ * Device Tree overlay for rpi-display by Watterott
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			rpi_display_pins: rpi_display_pins {
++				brcm,pins = <18 23 24 25>;
++				brcm,function = <1 1 1 0>; /* out out out in */
++				brcm,pull = <0 0 0 2>; /* - - - up */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			rpidisplay: rpi-display@0{
++				compatible = "ilitek,ili9341";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&rpi_display_pins>;
++
++				spi-max-frequency = <32000000>;
++				rotate = <270>;
++				bgr;
++				fps = <30>;
++				buswidth = <8>;
++				reset-gpios = <&gpio 23 1>;
++				dc-gpios = <&gpio 24 0>;
++				led-gpios = <&gpio 18 0>;
++				debug = <0>;
++			};
++
++			rpidisplay_ts: rpi-display-ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++
++				spi-max-frequency = <2000000>;
++				interrupts = <25 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 25 1>;
++				ti,x-plate-ohms = /bits/ 16 <60>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++	__overrides__ {
++		speed =     <&rpidisplay>,"spi-max-frequency:0";
++		rotate =    <&rpidisplay>,"rotate:0";
++		fps =       <&rpidisplay>,"fps:0";
++		debug =     <&rpidisplay>,"debug:0";
++		xohms =     <&rpidisplay_ts>,"ti,x-plate-ohms;0";
++		swapxy =    <&rpidisplay_ts>,"ti,swap-xy?";
++		backlight = <&rpidisplay>,"led-gpios:4",
++		            <&rpi_display_pins>,"brcm,pins:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts b/arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts
+new file mode 100644
+index 000000000000..8483c4f4b2eb
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts
+@@ -0,0 +1,25 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/soc/firmware";
++		__overlay__ {
++			ts: touchscreen {
++				compatible = "raspberrypi,firmware-ts";
++				touchscreen-size-x = <800>;
++				touchscreen-size-y = <480>;
++			};
++		};
++	};
++
++	__overrides__ {
++		touchscreen-size-x = <&ts>,"touchscreen-size-x:0";
++		touchscreen-size-y = <&ts>,"touchscreen-size-y:0";
++		touchscreen-inverted-x = <&ts>,"touchscreen-inverted-x?";
++		touchscreen-inverted-y = <&ts>,"touchscreen-inverted-y?";
++		touchscreen-swapped-x-y = <&ts>,"touchscreen-swapped-x-y?";
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
+new file mode 100644
+index 000000000000..1eeac4854db4
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
+@@ -0,0 +1,102 @@
++/*
++ * Overlay for the Raspberry Pi POE HAT.
++ */
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&firmware>;
++		__overlay__ {
++			fwpwm: pwm {
++				compatible = "raspberrypi,firmware-poe-pwm";
++				#pwm-cells = <2>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			fan: pwm-fan {
++				compatible = "pwm-fan";
++				cooling-levels = <0 1 10 100 255>;
++				#cooling-cells = <2>;
++				pwms = <&fwpwm 0 80000>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&cpu_thermal>;
++		__overlay__ {
++			trips {
++				trip0: trip0 {
++					temperature = <40000>;
++					hysteresis = <2000>;
++					type = "active";
++				};
++				trip1: trip1 {
++					temperature = <45000>;
++					hysteresis = <2000>;
++					type = "active";
++				};
++				trip2: trip2 {
++					temperature = <50000>;
++					hysteresis = <2000>;
++					type = "active";
++				};
++				trip3: trip3 {
++					temperature = <55000>;
++					hysteresis = <5000>;
++					type = "active";
++				};
++			};
++			cooling-maps {
++				map0 {
++					trip = <&trip0>;
++					cooling-device = <&fan 0 1>;
++				};
++				map1 {
++					trip = <&trip1>;
++					cooling-device = <&fan 1 2>;
++				};
++				map2 {
++					trip = <&trip2>;
++					cooling-device = <&fan 2 3>;
++				};
++				map3 {
++					trip = <&trip3>;
++					cooling-device = <&fan 3 4>;
++				};
++			};
++		};
++	};
++
++	fragment@3 {
++		target-path = "/__overrides__";
++		__overlay__ {
++			poe_fan_temp0 =		<&trip0>,"temperature:0";
++			poe_fan_temp0_hyst =	<&trip0>,"hysteresis:0";
++			poe_fan_temp1 =		<&trip1>,"temperature:0";
++			poe_fan_temp1_hyst =	<&trip1>,"hysteresis:0";
++			poe_fan_temp2 =		<&trip2>,"temperature:0";
++			poe_fan_temp2_hyst =	<&trip2>,"hysteresis:0";
++			poe_fan_temp3 =		<&trip3>,"temperature:0";
++			poe_fan_temp3_hyst =	<&trip3>,"hysteresis:0";
++		};
++	};
++
++	__overrides__ {
++		poe_fan_temp0 =		<&trip0>,"temperature:0";
++		poe_fan_temp0_hyst =	<&trip0>,"hysteresis:0";
++		poe_fan_temp1 =		<&trip1>,"temperature:0";
++		poe_fan_temp1_hyst =	<&trip1>,"hysteresis:0";
++		poe_fan_temp2 =		<&trip2>,"temperature:0";
++		poe_fan_temp2_hyst =	<&trip2>,"hysteresis:0";
++		poe_fan_temp3 =		<&trip3>,"temperature:0";
++		poe_fan_temp3_hyst =	<&trip3>,"hysteresis:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts b/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts
+new file mode 100644
+index 000000000000..011f92ad33f3
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts
+@@ -0,0 +1,23 @@
++// SPDX-License-Identifier: (GPL-2.0 OR MIT)
++// Overlay for the Raspberry Pi PoE+ HAT.
++
++#include "rpi-poe-overlay.dts"
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@10 {
++		target-path = "/";
++		__overlay__ {
++			rpi_poe_power_supply: rpi-poe-power-supply {
++				compatible = "raspberrypi,rpi-poe-power-supply";
++				firmware = <&firmware>;
++				status = "okay";
++			};
++		};
++	};
++};
++
++&fan {
++	cooling-levels = <0 32 64 128 255>;
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts b/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
+new file mode 100644
+index 000000000000..9cda044a0f62
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
+@@ -0,0 +1,39 @@
++// Definitions for Rpi-Proto
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8731@1a {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8731";
++				reg = <0x1a>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "rpi,rpi-proto";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-sense-overlay.dts b/arch/arm/boot/dts/overlays/rpi-sense-overlay.dts
+new file mode 100644
+index 000000000000..89d8d2ea6b2e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-sense-overlay.dts
+@@ -0,0 +1,47 @@
++// rpi-sense HAT
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			rpi-sense@46 {
++				compatible = "rpi,rpi-sense";
++				reg = <0x46>;
++				keys-int-gpios = <&gpio 23 1>;
++				status = "okay";
++			};
++
++			lsm9ds1-magn@1c {
++				compatible = "st,lsm9ds1-magn";
++				reg = <0x1c>;
++				status = "okay";
++			};
++
++			lsm9ds1-accel6a {
++				compatible = "st,lsm9ds1-accel";
++				reg = <0x6a>;
++				status = "okay";
++			};
++
++			lps25h-press@5c {
++				compatible = "st,lps25h-press";
++				reg = <0x5c>;
++				status = "okay";
++			};
++
++			hts221-humid@5f {
++				compatible = "st,hts221-humid", "st,hts221";
++				reg = <0x5f>;
++				status = "okay";
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rpi-tv-overlay.dts b/arch/arm/boot/dts/overlays/rpi-tv-overlay.dts
+new file mode 100644
+index 000000000000..3c97a545d820
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpi-tv-overlay.dts
+@@ -0,0 +1,34 @@
++// rpi-tv HAT
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			cxd2880@0 {
++				compatible = "sony,cxd2880";
++				reg = <0>; /* CE0 */
++				spi-max-frequency = <50000000>;
++				status = "okay";
++			};
++		};
++	};
++
++};
+diff --git a/arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts b/arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts
+new file mode 100644
+index 000000000000..bdd1c0e5a915
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rpivid-v4l2-overlay.dts
+@@ -0,0 +1,50 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for Raspberry Pi video decode engine
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/interrupt-controller/arm-gic.h>
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&scb>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <2>;
++			#size-cells = <2>;
++
++			codec@7eb10000 {
++				compatible = "raspberrypi,rpivid-vid-decoder";
++				reg = <0x0 0x7eb10000  0x0 0x1000>,  /* INTC */
++				      <0x0 0x7eb00000  0x0 0x10000>; /* HEVC */
++				reg-names = "intc",
++					    "hevc";
++
++				interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
++
++				clocks = <&firmware_clocks 11>;
++				clock-names = "hevc";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&scb>;
++		__overlay__ {
++			hevc-decoder@7eb00000 {
++				status = "disabled";
++			};
++			rpivid-local-intc@7eb10000 {
++				status = "disabled";
++			};
++			h264-decoder@7eb20000 {
++				status = "disabled";
++			};
++			vp9-decoder@7eb30000 {
++				status = "disabled";
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/rra-digidac1-wm8741-audio-overlay.dts b/arch/arm/boot/dts/overlays/rra-digidac1-wm8741-audio-overlay.dts
+new file mode 100644
+index 000000000000..87e9a326eff1
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/rra-digidac1-wm8741-audio-overlay.dts
+@@ -0,0 +1,49 @@
++// Definitions for RRA DigiDAC1 Audio card
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8804@3b {
++				#sound-dai-cells = <0>;
++				compatible = "wlf,wm8804";
++				reg = <0x3b>;
++				status = "okay";
++				PVDD-supply = <&vdd_3v3_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++			};
++
++			wm8742: wm8741@1a {
++				compatible = "wlf,wm8741";
++				reg = <0x1a>;
++				status = "okay";
++				AVDD-supply = <&vdd_5v0_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "rra,digidac1-soundcard";
++			i2s-controller = <&i2s>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sainsmart18-overlay.dts b/arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
+new file mode 100644
+index 000000000000..c51f1c030a55
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
+@@ -0,0 +1,52 @@
++/*
++ * Device Tree overlay for the Sainsmart 1.8" TFT LCD with ST7735R chip 160x128
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ss18: sainsmart18@0 {
++				compatible = "fbtft,sainsmart18";
++				reg = <0>;
++				pinctrl-names = "default";
++				spi-max-frequency = <40000000>;
++				rotate = <90>;
++				buswidth = <8>;
++				fps = <50>;
++				height = <160>;
++				width = <128>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				debug = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		speed     = <&ss18>,"spi-max-frequency:0";
++		rotate    = <&ss18>,"rotate:0";
++		fps       = <&ss18>,"fps:0";
++		bgr       = <&ss18>,"bgr?";
++		debug     = <&ss18>,"debug:0";
++		dc_pin    = <&ss18>,"dc-gpios:4";
++		reset_pin = <&ss18>,"reset-gpios:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts b/arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts
+new file mode 100644
+index 000000000000..04d74d62897b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts
+@@ -0,0 +1,43 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sc16is750: sc16is750@48 {
++				compatible = "nxp,sc16is750";
++				reg = <0x48>; /* i2c address */
++				clocks = <&sc16is750_clk>;
++				interrupt-parent = <&gpio>;
++				interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
++				gpio-controller;
++				#gpio-cells = <2>;
++				i2c-max-frequency = <400000>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			sc16is750_clk: sc16is750_i2c_clk@48 {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <14745600>;
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&sc16is750>,"interrupts:0";
++		addr = <&sc16is750>,"reg:0", <&sc16is750_clk>,"name";
++		xtal = <&sc16is750_clk>,"clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sc16is752-i2c-overlay.dts b/arch/arm/boot/dts/overlays/sc16is752-i2c-overlay.dts
+new file mode 100644
+index 000000000000..da05e981314c
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sc16is752-i2c-overlay.dts
+@@ -0,0 +1,43 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sc16is752: sc16is752@48 {
++				compatible = "nxp,sc16is752";
++				reg = <0x48>; /* i2c address */
++				clocks = <&sc16is752_clk>;
++				interrupt-parent = <&gpio>;
++				interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
++				gpio-controller;
++				#gpio-cells = <2>;
++				i2c-max-frequency = <400000>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			sc16is752_clk: sc16is752_i2c_clk@48 {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <14745600>;
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&sc16is752>,"interrupts:0";
++		addr = <&sc16is752>,"reg:0",<&sc16is752_clk>,"name";
++		xtal = <&sc16is752_clk>,"clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sc16is752-spi0-overlay.dts b/arch/arm/boot/dts/overlays/sc16is752-spi0-overlay.dts
+new file mode 100644
+index 000000000000..a49a04722b99
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sc16is752-spi0-overlay.dts
+@@ -0,0 +1,49 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sc16is752: sc16is752@0 {
++				compatible = "nxp,sc16is752";
++				reg = <0>; /* CE0 */
++				clocks = <&sc16is752_clk>;
++				interrupt-parent = <&gpio>;
++				interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
++				gpio-controller;
++				#gpio-cells = <2>;
++				spi-max-frequency = <4000000>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target-path = "/";
++		__overlay__ {
++			sc16is752_clk: sc16is752_spi0_0_clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <14745600>;
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&sc16is752>,"interrupts:0";
++		xtal = <&sc16is752_clk>,"clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts b/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
+new file mode 100644
+index 000000000000..730c6e8cd614
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
+@@ -0,0 +1,67 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi1_pins: spi1_pins {
++				brcm,pins = <19 20 21>;
++				brcm,function = <3>; /* alt4 */
++			};
++
++			spi1_cs_pins: spi1_cs_pins {
++				brcm,pins = <18>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spi1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
++			cs-gpios = <&gpio 18 1>;
++			status = "okay";
++
++			sc16is752: sc16is752@0 {
++				compatible = "nxp,sc16is752";
++				reg = <0>; /* CE0 */
++				clocks = <&sc16is752_clk>;
++				interrupt-parent = <&gpio>;
++				interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
++				gpio-controller;
++				#gpio-cells = <2>;
++				spi-max-frequency = <4000000>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			sc16is752_clk: sc16is752_spi1_0_clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <14745600>;
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&sc16is752>,"interrupts:0";
++		xtal = <&sc16is752_clk>,"clock-frequency:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sdhost-overlay.dts b/arch/arm/boot/dts/overlays/sdhost-overlay.dts
+new file mode 100644
+index 000000000000..0b72b4eeac88
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sdhost-overlay.dts
+@@ -0,0 +1,38 @@
++/dts-v1/;
++/plugin/;
++
++/* Provide backwards compatible aliases for the old sdhost dtparams. */
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&sdhost>;
++		frag0: __overlay__ {
++			brcm,overclock-50 = <0>;
++			brcm,pio-limit = <1>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&mmc>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&mmcnr>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	__overrides__ {
++		overclock_50     = <&frag0>,"brcm,overclock-50:0";
++		force_pio        = <&frag0>,"brcm,force-pio?";
++		pio_limit        = <&frag0>,"brcm,pio-limit:0";
++		debug            = <&frag0>,"brcm,debug?";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sdio-overlay.dts b/arch/arm/boot/dts/overlays/sdio-overlay.dts
+new file mode 100644
+index 000000000000..873e49056379
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sdio-overlay.dts
+@@ -0,0 +1,77 @@
++/dts-v1/;
++/plugin/;
++
++/* Enable SDIO from MMC interface via various GPIO groups */
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&mmcnr>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&mmc>;
++		sdio_ovl: __overlay__ {
++			pinctrl-0 = <&sdio_ovl_pins>;
++			pinctrl-names = "default";
++			non-removable;
++			bus-width = <4>;
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			sdio_ovl_pins: sdio_ovl_pins {
++				brcm,pins = <22 23 24 25 26 27>;
++				brcm,function = <7>; /* ALT3 = SD1 */
++				brcm,pull = <0 2 2 2 2 2>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&sdio_ovl_pins>;
++		__dormant__ {
++			brcm,pins = <22 23 24 25>;
++			brcm,pull = <0 2 2 2>;
++		};
++	};
++
++	fragment@4 {
++		target = <&sdio_ovl_pins>;
++		__dormant__ {
++			brcm,pins = <34 35 36 37>;
++			brcm,pull = <0 2 2 2>;
++		};
++	};
++
++	fragment@5 {
++		target = <&sdio_ovl_pins>;
++		__dormant__ {
++			brcm,pins = <34 35 36 37 38 39>;
++			brcm,pull = <0 2 2 2 2 2>;
++		};
++	};
++
++	fragment@6 {
++		target-path = "/aliases";
++		__overlay__ {
++			mmc1 = "/soc/mmc@7e300000";
++		};
++	};
++
++	__overrides__ {
++		poll_once = <&sdio_ovl>,"non-removable?";
++		bus_width = <&sdio_ovl>,"bus-width:0";
++		sdio_overclock = <&sdio_ovl>,"brcm,overclock-50:0";
++		gpios_22_25 = <0>,"=3";
++		gpios_34_37 = <0>,"=4";
++		gpios_34_39 = <0>,"=5";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/seeed-can-fd-hat-v1-overlay.dts b/arch/arm/boot/dts/overlays/seeed-can-fd-hat-v1-overlay.dts
+new file mode 100644
+index 000000000000..210d027a073e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/seeed-can-fd-hat-v1-overlay.dts
+@@ -0,0 +1,138 @@
++// redo: ovmerge -c spi1-1cs-overlay.dts,cs0_pin=18,cs0_spidev=false mcp251xfd-overlay.dts,spi0-0,interrupt=25 mcp251xfd-overlay.dts,spi1-0,interrupt=24
++
++// Device tree overlay for https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi1_pins: spi1_pins {
++				brcm,pins = <19 20 21>;
++				brcm,function = <3>;
++			};
++			spi1_cs_pins: spi1_cs_pins {
++				brcm,pins = <18>;
++				brcm,function = <1>;
++			};
++		};
++	};
++	fragment@1 {
++		target = <&spi1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
++			cs-gpios = <&gpio 18 1>;
++			status = "okay";
++			spidev@0 {
++				compatible = "spidev";
++				reg = <0>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "disabled";
++			};
++		};
++	};
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@3 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@4 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins: mcp251xfd_spi0_0_pins {
++				brcm,pins = <25>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@5 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc: mcp251xfd-spi0-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@6 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc>;
++			};
++		};
++	};
++	fragment@7 {
++		target-path = "spi1/spidev@0";
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@8 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins_1: mcp251xfd_spi1_0_pins {
++				brcm,pins = <24>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@9 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc_1: mcp251xfd-spi1-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@10 {
++		target = <&spi1>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins_1>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc_1>;
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/seeed-can-fd-hat-v2-overlay.dts b/arch/arm/boot/dts/overlays/seeed-can-fd-hat-v2-overlay.dts
+new file mode 100644
+index 000000000000..e843d0b19745
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/seeed-can-fd-hat-v2-overlay.dts
+@@ -0,0 +1,117 @@
++// redo: ovmerge -c mcp251xfd-overlay.dts,spi0-0,interrupt=25 mcp251xfd-overlay.dts,spi0-1,interrupt=24 i2c-rtc-overlay.dts,pcf85063
++
++// Device tree overlay for https://www.seeedstudio.com/CAN-BUS-FD-HAT-for-Raspberry-Pi-p-4742.html 
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins: mcp251xfd_spi0_0_pins {
++				brcm,pins = <25>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@2 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc: mcp251xfd-spi0-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@3 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc>;
++			};
++		};
++	};
++	fragment@4 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@5 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins_1: mcp251xfd_spi0_1_pins {
++				brcm,pins = <24>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@6 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc_1: mcp251xfd-spi0-1-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@7 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@1 {
++				compatible = "microchip,mcp251xfd";
++				reg = <1>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins_1>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc_1>;
++			};
++		};
++	};
++	fragment@8 {
++		target = <&i2cbus>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pcf85063@51 {
++				compatible = "nxp,pcf85063";
++				reg = <0x51>;
++			};
++		};
++	};
++	fragment@9 {
++		target = <&i2c_arm>;
++		i2cbus: __overlay__ {
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sh1106-spi-overlay.dts b/arch/arm/boot/dts/overlays/sh1106-spi-overlay.dts
+new file mode 100644
+index 000000000000..57a0cc9b1741
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sh1106-spi-overlay.dts
+@@ -0,0 +1,84 @@
++/*
++ * Device Tree overlay for SH1106 based SPI OLED display
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			sh1106_pins: sh1106_pins {
++                                brcm,pins = <25 24>;
++                                brcm,function = <1 1>; /* out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sh1106: sh1106@0{
++				compatible = "sinowealth,sh1106";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&sh1106_pins>;
++
++				spi-max-frequency = <4000000>;
++				bgr = <0>;
++				bpp = <1>;
++				rotate = <0>;
++				fps = <25>;
++				buswidth = <8>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				debug = <0>;
++
++				sinowealth,height = <64>;
++				sinowealth,width = <128>;
++				sinowealth,page-offset = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		speed     = <&sh1106>,"spi-max-frequency:0";
++		rotate    = <&sh1106>,"rotate:0";
++		fps       = <&sh1106>,"fps:0";
++		debug     = <&sh1106>,"debug:0";
++		dc_pin    = <&sh1106>,"dc-gpios:4",
++		            <&sh1106_pins>,"brcm,pins:4";
++		reset_pin = <&sh1106>,"reset-gpios:4",
++		            <&sh1106_pins>,"brcm,pins:0";
++		height    = <&sh1106>,"sinowealth,height:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/si446x-spi0-overlay.dts b/arch/arm/boot/dts/overlays/si446x-spi0-overlay.dts
+new file mode 100644
+index 000000000000..90495f0941fb
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/si446x-spi0-overlay.dts
+@@ -0,0 +1,53 @@
++// Overlay for the SiLabs Si446X Controller - SPI0
++// Default Interrupt Pin: 17
++// Default SDN Pin: 27
++/dts-v1/;
++/plugin/;
++
++   / {
++    compatible = "brcm,bcm2835";
++
++    fragment@0 {
++        target = <&spi0>;
++        __overlay__ {
++            // needed to avoid dtc warning
++            #address-cells = <1>;
++            #size-cells = <0>;
++
++            status = "okay";
++
++            uhf0: si446x@0{
++                compatible = "silabs,si446x";
++                reg = <0>; // CE0
++                pinctrl-names = "default";
++                pinctrl-0 = <&uhf0_pins>;
++                interrupt-parent = <&gpio>;
++                interrupts = <17 0x2>; // falling edge
++                spi-max-frequency = <4000000>;
++                sdn_pin = <27>;
++                irq_pin = <17>;
++                status = "okay";
++            };
++        };
++    };
++
++    fragment@1 {
++        target = <&gpio>;
++        __overlay__ {
++            uhf0_pins: uhf0_pins {
++                brcm,pins = <17 27>;
++                brcm,function = <0 1>; // in, out
++                brcm,pull = <2 0>; // high, none
++            };
++        };
++    };
++
++    __overrides__ {
++        int_pin = <&uhf0>, "interrupts:0",
++                  <&uhf0>, "irq_pin:0",
++                  <&uhf0_pins>, "brcm,pins:0";
++        reset_pin = <&uhf0>, "sdn_pin:0",
++                    <&uhf0_pins>, "brcm,pins:4";
++        speed   = <&uhf0>, "spi-max-frequency:0";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/smi-dev-overlay.dts b/arch/arm/boot/dts/overlays/smi-dev-overlay.dts
+new file mode 100644
+index 000000000000..bafab6c92506
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/smi-dev-overlay.dts
+@@ -0,0 +1,20 @@
++// Description: Overlay to enable character device interface for SMI.
++// Author:	Luke Wren <luke@raspberrypi.org>
++
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&soc>;
++		__overlay__ {
++			smi_dev {
++				compatible = "brcm,bcm2835-smi-dev";
++				smi_handle = <&smi>;
++				status = "okay";
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/smi-nand-overlay.dts b/arch/arm/boot/dts/overlays/smi-nand-overlay.dts
+new file mode 100644
+index 000000000000..ae1e50329d66
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/smi-nand-overlay.dts
+@@ -0,0 +1,66 @@
++// Description: Overlay to enable NAND flash through
++// the secondary memory interface
++// Author:	Luke Wren
++
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&smi>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&smi_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&soc>;
++		__overlay__ {
++			nand: flash@0 {
++				compatible = "brcm,bcm2835-smi-nand";
++				smi_handle = <&smi>;
++				#address-cells = <1>;
++				#size-cells = <1>;
++				status = "okay";
++
++				partition@0 {
++					label = "stage2";
++					// 128k
++					reg = <0 0x20000>;
++					read-only;
++				};
++				partition@1 {
++					label = "firmware";
++					// 16M
++					reg = <0x20000 0x1000000>;
++					read-only;
++				};
++				partition@2 {
++					label = "root";
++					// 2G (will need to use 64 bit for >=4G)
++					reg = <0x1020000 0x80000000>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			smi_pins: smi_pins {
++				brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
++					12 13 14 15>;
++				/* Alt 1: SMI */
++				brcm,function = <5 5 5 5 5 5 5 5 5 5 5
++					5 5 5 5 5>;
++				/* /CS, /WE and /OE are pulled high, as they are
++				   generally active low signals */
++				brcm,pull = <2 2 2 2 2 2 2 2 0 0 0 0 0 0 0 0>;
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/smi-overlay.dts b/arch/arm/boot/dts/overlays/smi-overlay.dts
+new file mode 100644
+index 000000000000..bb8c7830df23
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/smi-overlay.dts
+@@ -0,0 +1,37 @@
++// Description:	Overlay to enable the secondary memory interface peripheral
++// Author:	Luke Wren
++
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&smi>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&smi_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			smi_pins: smi_pins {
++				/* Don't configure the top two address bits, as
++				   these are already used as ID_SD and ID_SC */
++				brcm,pins = <2 3 4 5 6 7 8 9 10 11 12 13 14 15
++					     16 17 18 19 20 21 22 23 24 25>;
++				/* Alt 1: SMI */
++				brcm,function = <5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
++						 5 5 5 5 5 5 5 5 5>;
++				/* /CS, /WE and /OE are pulled high, as they are
++				   generally active low signals */
++				brcm,pull = <2 2 2 2 2 2 0 0 0 0 0 0 0 0 0 0 0
++					     0 0 0 0 0 0 0>;
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts b/arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts
+new file mode 100644
+index 000000000000..a132b8637c31
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts
+@@ -0,0 +1,31 @@
++/*
++ * Device tree overlay to move spi0 to gpio 35 to 39 on CM
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			cs-gpios = <&gpio 36 1>, <&gpio 35 1>;
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0_cs_pins>;
++		__overlay__ {
++			brcm,pins = <36 35>;
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0_pins>;
++		__overlay__ {
++			brcm,pins = <37 38 39>;
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi-gpio40-45-overlay.dts b/arch/arm/boot/dts/overlays/spi-gpio40-45-overlay.dts
+new file mode 100644
+index 000000000000..9ebcaf1b5ea0
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi-gpio40-45-overlay.dts
+@@ -0,0 +1,36 @@
++/*
++ * Boot EEPROM overlay
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			cs-gpios = <&gpio 43 1>, <&gpio 44 1>, <&gpio 45 1>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0_cs_pins>;
++		__overlay__ {
++			brcm,pins = <45 44 43>;
++			brcm,function = <1>; /* output */
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0_pins>;
++		__overlay__ {
++			brcm,pins = <40 41 42>;
++			brcm,function = <3>; /* alt4 */
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi-rtc-overlay.dts b/arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
+new file mode 100644
+index 000000000000..51b7fec281c0
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
+@@ -0,0 +1,75 @@
++// Definitions for several SPI-based Real Time Clocks
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&rtc>;
++		__dormant__ {
++			compatible = "maxim,ds3232";
++		};
++	};
++
++	fragment@1 {
++		target = <&rtc>;
++		__dormant__ {
++			compatible = "maxim,ds3234";
++		};
++	};
++
++	fragment@2 {
++		target = <&rtc>;
++		__dormant__ {
++			compatible = "nxp,rtc-pcf2123";
++		};
++	};
++
++	spidev: fragment@100 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	frag101: fragment@101 {
++		target = <&spi0>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			rtc: rtc@0 {
++				reg = <0>;
++				spi-max-frequency = <5000000>;
++			};
++		};
++	};
++
++	__overrides__ {
++		spi0_0 = <&spidev>, "target:0=",<&spidev0>,
++		         <&frag101>, "target:0=",<&spi0>,
++		         <&rtc>, "reg:0=0";
++		spi0_1 = <&spidev>, "target:0=",<&spidev1>,
++		         <&frag101>, "target:0=",<&spi0>,
++		         <&rtc>, "reg:0=1";
++		spi1_0 = <0>,"-100",
++		         <&frag101>, "target:0=",<&spi1>,
++		         <&rtc>, "reg:0=0";
++		spi1_1 = <0>,"-100",
++		         <&frag101>, "target:0=",<&spi1>,
++		         <&rtc>, "reg:0=1";
++		spi2_0 = <0>,"-100",
++		         <&frag101>, "target:0=",<&spi2>,
++		         <&rtc>, "reg:0=0";
++		spi2_1 = <0>,"-100",
++		         <&frag101>, "target:0=",<&spi2>,
++		         <&rtc>, "reg:0=1";
++		cs_high = <&rtc>, "spi-cs-high?";
++
++		ds3232 = <0>,"+0";
++		ds3234 = <0>,"+1";
++		pcf2123 = <0>,"+2";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi0-1cs-overlay.dts b/arch/arm/boot/dts/overlays/spi0-1cs-overlay.dts
+new file mode 100644
+index 000000000000..e6eb66e2076a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi0-1cs-overlay.dts
+@@ -0,0 +1,42 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <8>;
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		frag1: __overlay__ {
++			cs-gpios = <&gpio 8 1>;
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&spi0_pins>;
++		__dormant__ {
++			brcm,pins = <10 11>;
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		no_miso = <0>,"=3";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi0-2cs-overlay.dts b/arch/arm/boot/dts/overlays/spi0-2cs-overlay.dts
+new file mode 100644
+index 000000000000..df6519537c3a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi0-2cs-overlay.dts
+@@ -0,0 +1,37 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <8 7>;
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		frag1: __overlay__ {
++			cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0_pins>;
++		__dormant__ {
++			brcm,pins = <10 11>;
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&frag0>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		no_miso = <0>,"=2";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi1-1cs-overlay.dts b/arch/arm/boot/dts/overlays/spi1-1cs-overlay.dts
+new file mode 100644
+index 000000000000..ea2794bc5fd5
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi1-1cs-overlay.dts
+@@ -0,0 +1,57 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi1_pins: spi1_pins {
++				brcm,pins = <19 20 21>;
++				brcm,function = <3>; /* alt4 */
++			};
++
++			spi1_cs_pins: spi1_cs_pins {
++				brcm,pins = <18>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spi1>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
++			cs-gpios = <&gpio 18 1>;
++			status = "okay";
++
++			spidev1_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&spi1_cs_pins>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs0_spidev = <&spidev1_0>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi1-2cs-overlay.dts b/arch/arm/boot/dts/overlays/spi1-2cs-overlay.dts
+new file mode 100644
+index 000000000000..dab34ee79ae2
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi1-2cs-overlay.dts
+@@ -0,0 +1,69 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi1_pins: spi1_pins {
++				brcm,pins = <19 20 21>;
++				brcm,function = <3>; /* alt4 */
++			};
++
++			spi1_cs_pins: spi1_cs_pins {
++				brcm,pins = <18 17>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spi1>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
++			cs-gpios = <&gpio 18 1>, <&gpio 17 1>;
++			status = "okay";
++
++			spidev1_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev1_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&spi1_cs_pins>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&spi1_cs_pins>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs0_spidev = <&spidev1_0>,"status";
++		cs1_spidev = <&spidev1_1>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi1-3cs-overlay.dts b/arch/arm/boot/dts/overlays/spi1-3cs-overlay.dts
+new file mode 100644
+index 000000000000..bc7e7d04324b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi1-3cs-overlay.dts
+@@ -0,0 +1,81 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi1_pins: spi1_pins {
++				brcm,pins = <19 20 21>;
++				brcm,function = <3>; /* alt4 */
++			};
++
++			spi1_cs_pins: spi1_cs_pins {
++				brcm,pins = <18 17 16>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spi1>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
++			cs-gpios = <&gpio 18 1>, <&gpio 17 1>, <&gpio 16 1>;
++			status = "okay";
++
++			spidev1_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev1_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev1_2: spidev@2 {
++				compatible = "spidev";
++				reg = <2>;      /* CE2 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&spi1_cs_pins>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&spi1_cs_pins>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs2_pin  = <&spi1_cs_pins>,"brcm,pins:8",
++			   <&frag1>,"cs-gpios:28";
++		cs0_spidev = <&spidev1_0>,"status";
++		cs1_spidev = <&spidev1_1>,"status";
++		cs2_spidev = <&spidev1_2>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi2-1cs-overlay.dts b/arch/arm/boot/dts/overlays/spi2-1cs-overlay.dts
+new file mode 100644
+index 000000000000..2a29750462af
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi2-1cs-overlay.dts
+@@ -0,0 +1,57 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi2_pins: spi2_pins {
++				brcm,pins = <40 41 42>;
++				brcm,function = <3>; /* alt4 */
++			};
++
++			spi2_cs_pins: spi2_cs_pins {
++				brcm,pins = <43>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spi2>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi2_pins &spi2_cs_pins>;
++			cs-gpios = <&gpio 43 1>;
++			status = "okay";
++
++			spidev2_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&spi2_cs_pins>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs0_spidev = <&spidev2_0>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi2-2cs-overlay.dts b/arch/arm/boot/dts/overlays/spi2-2cs-overlay.dts
+new file mode 100644
+index 000000000000..642678fc9ddd
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi2-2cs-overlay.dts
+@@ -0,0 +1,69 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi2_pins: spi2_pins {
++				brcm,pins = <40 41 42>;
++				brcm,function = <3>; /* alt4 */
++			};
++
++			spi2_cs_pins: spi2_cs_pins {
++				brcm,pins = <43 44>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spi2>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi2_pins &spi2_cs_pins>;
++			cs-gpios = <&gpio 43 1>, <&gpio 44 1>;
++			status = "okay";
++
++			spidev2_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev2_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&spi2_cs_pins>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&spi2_cs_pins>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs0_spidev = <&spidev2_0>,"status";
++		cs1_spidev = <&spidev2_1>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi2-3cs-overlay.dts b/arch/arm/boot/dts/overlays/spi2-3cs-overlay.dts
+new file mode 100644
+index 000000000000..28d40c6c3c37
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi2-3cs-overlay.dts
+@@ -0,0 +1,81 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi2_pins: spi2_pins {
++				brcm,pins = <40 41 42>;
++				brcm,function = <3>; /* alt4 */
++			};
++
++			spi2_cs_pins: spi2_cs_pins {
++				brcm,pins = <43 44 45>;
++				brcm,function = <1>; /* output */
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&spi2>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi2_pins &spi2_cs_pins>;
++			cs-gpios = <&gpio 43 1>, <&gpio 44 1>, <&gpio 45 1>;
++			status = "okay";
++
++			spidev2_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev2_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev2_2: spidev@2 {
++				compatible = "spidev";
++				reg = <2>;      /* CE2 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&spi2_cs_pins>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&spi2_cs_pins>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs2_pin  = <&spi2_cs_pins>,"brcm,pins:8",
++			   <&frag1>,"cs-gpios:28";
++		cs0_spidev = <&spidev2_0>,"status";
++		cs1_spidev = <&spidev2_1>,"status";
++		cs2_spidev = <&spidev2_2>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi3-1cs-overlay.dts b/arch/arm/boot/dts/overlays/spi3-1cs-overlay.dts
+new file mode 100644
+index 000000000000..335af8637051
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi3-1cs-overlay.dts
+@@ -0,0 +1,44 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi3_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <0>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi3>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi3_pins &spi3_cs_pins>;
++			cs-gpios = <&gpio 0 1>;
++			status = "okay";
++
++			spidev3_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs0_spidev = <&spidev3_0>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi3-2cs-overlay.dts b/arch/arm/boot/dts/overlays/spi3-2cs-overlay.dts
+new file mode 100644
+index 000000000000..ce65da27f767
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi3-2cs-overlay.dts
+@@ -0,0 +1,56 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi3_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <0 24>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi3>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi3_pins &spi3_cs_pins>;
++			cs-gpios = <&gpio 0 1>, <&gpio 24 1>;
++			status = "okay";
++
++			spidev3_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev3_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&frag0>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs0_spidev = <&spidev3_0>,"status";
++		cs1_spidev = <&spidev3_1>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi4-1cs-overlay.dts b/arch/arm/boot/dts/overlays/spi4-1cs-overlay.dts
+new file mode 100644
+index 000000000000..85d70b40352b
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi4-1cs-overlay.dts
+@@ -0,0 +1,44 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi4_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <4>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi4>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi4_pins &spi4_cs_pins>;
++			cs-gpios = <&gpio 4 1>;
++			status = "okay";
++
++			spidev4_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs0_spidev = <&spidev4_0>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi4-2cs-overlay.dts b/arch/arm/boot/dts/overlays/spi4-2cs-overlay.dts
+new file mode 100644
+index 000000000000..8bc2215a6a7e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi4-2cs-overlay.dts
+@@ -0,0 +1,56 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi4_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <4 25>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi4>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi4_pins &spi4_cs_pins>;
++			cs-gpios = <&gpio 4 1>, <&gpio 25 1>;
++			status = "okay";
++
++			spidev4_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev4_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&frag0>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs0_spidev = <&spidev4_0>,"status";
++		cs1_spidev = <&spidev4_1>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi5-1cs-overlay.dts b/arch/arm/boot/dts/overlays/spi5-1cs-overlay.dts
+new file mode 100644
+index 000000000000..c0f8cb8510ee
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi5-1cs-overlay.dts
+@@ -0,0 +1,44 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi5_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <12>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi5>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi5_pins &spi5_cs_pins>;
++			cs-gpios = <&gpio 12 1>;
++			status = "okay";
++
++			spidev5_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs0_spidev = <&spidev5_0>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi5-2cs-overlay.dts b/arch/arm/boot/dts/overlays/spi5-2cs-overlay.dts
+new file mode 100644
+index 000000000000..7758b9c00b4e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi5-2cs-overlay.dts
+@@ -0,0 +1,56 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi5_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <12 26>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi5>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi5_pins &spi5_cs_pins>;
++			cs-gpios = <&gpio 12 1>, <&gpio 26 1>;
++			status = "okay";
++
++			spidev5_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev5_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&frag0>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs0_spidev = <&spidev5_0>,"status";
++		cs1_spidev = <&spidev5_1>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi6-1cs-overlay.dts b/arch/arm/boot/dts/overlays/spi6-1cs-overlay.dts
+new file mode 100644
+index 000000000000..8c8a953eca01
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi6-1cs-overlay.dts
+@@ -0,0 +1,44 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi6_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <18>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi6>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi6_pins &spi6_cs_pins>;
++			cs-gpios = <&gpio 18 1>;
++			status = "okay";
++
++			spidev6_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs0_spidev = <&spidev6_0>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/spi6-2cs-overlay.dts b/arch/arm/boot/dts/overlays/spi6-2cs-overlay.dts
+new file mode 100644
+index 000000000000..2ff897f21aed
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi6-2cs-overlay.dts
+@@ -0,0 +1,56 @@
++/dts-v1/;
++/plugin/;
++
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&spi6_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins = <18 27>;
++			brcm,function = <1>; /* output */
++		};
++	};
++
++	fragment@1 {
++		target = <&spi6>;
++		frag1: __overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			pinctrl-names = "default";
++		        pinctrl-0 = <&spi6_pins &spi6_cs_pins>;
++			cs-gpios = <&gpio 18 1>, <&gpio 27 1>;
++			status = "okay";
++
++			spidev6_0: spidev@0 {
++				compatible = "spidev";
++				reg = <0>;      /* CE0 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++
++			spidev6_1: spidev@1 {
++				compatible = "spidev";
++				reg = <1>;      /* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		cs0_pin  = <&frag0>,"brcm,pins:0",
++			   <&frag1>,"cs-gpios:4";
++		cs1_pin  = <&frag0>,"brcm,pins:4",
++			   <&frag1>,"cs-gpios:16";
++		cs0_spidev = <&spidev6_0>,"status";
++		cs1_spidev = <&spidev6_1>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ssd1306-overlay.dts b/arch/arm/boot/dts/overlays/ssd1306-overlay.dts
+new file mode 100644
+index 000000000000..84cf10e489d3
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ssd1306-overlay.dts
+@@ -0,0 +1,36 @@
++// Overlay for SSD1306 128x64 and 128x32 OLED displays
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++
++    fragment@0 {
++	target = <&i2c1>;
++	__overlay__ {
++	    status = "okay";
++
++	    #address-cells = <1>;
++	    #size-cells = <0>;
++
++	    ssd1306: oled@3c{
++		compatible = "solomon,ssd1306fb-i2c";
++		reg = <0x3c>;
++		solomon,width = <128>;
++		solomon,height = <64>;
++		solomon,page-offset = <0>;
++	    };
++	};
++    };
++
++    __overrides__ {
++	address = <&ssd1306>,"reg:0";
++	width = <&ssd1306>,"solomon,width:0";
++	height = <&ssd1306>,"solomon,height:0";
++	offset = <&ssd1306>,"solomon,page-offset:0";
++	normal = <&ssd1306>,"solomon,segment-no-remap?";
++	sequential = <&ssd1306>,"solomon,com-seq?";
++	remapped = <&ssd1306>,"solomon,com-lrremap?";
++	inverted = <&ssd1306>,"solomon,com-invdir?";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/ssd1306-spi-overlay.dts b/arch/arm/boot/dts/overlays/ssd1306-spi-overlay.dts
+new file mode 100644
+index 000000000000..ffc90c7cecf6
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ssd1306-spi-overlay.dts
+@@ -0,0 +1,84 @@
++/*
++ * Device Tree overlay for SSD1306 based SPI OLED display
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			ssd1306_pins: ssd1306_pins {
++                                brcm,pins = <25 24>;
++                                brcm,function = <1 1>; /* out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ssd1306: ssd1306@0{
++				compatible = "solomon,ssd1306";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&ssd1306_pins>;
++
++				spi-max-frequency = <10000000>;
++				bgr = <0>;
++				bpp = <1>;
++				rotate = <0>;
++				fps = <25>;
++				buswidth = <8>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				debug = <0>;
++
++				solomon,height = <64>;
++				solomon,width = <128>;
++				solomon,page-offset = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		speed     = <&ssd1306>,"spi-max-frequency:0";
++		rotate    = <&ssd1306>,"rotate:0";
++		fps       = <&ssd1306>,"fps:0";
++		debug     = <&ssd1306>,"debug:0";
++		dc_pin    = <&ssd1306>,"dc-gpios:4",
++		            <&ssd1306_pins>,"brcm,pins:4";
++		reset_pin = <&ssd1306>,"reset-gpios:4",
++		            <&ssd1306_pins>,"brcm,pins:0";
++		height    = <&ssd1306>,"solomon,height:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/ssd1331-spi-overlay.dts b/arch/arm/boot/dts/overlays/ssd1331-spi-overlay.dts
+new file mode 100644
+index 000000000000..9fd5ebf2feda
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ssd1331-spi-overlay.dts
+@@ -0,0 +1,83 @@
++/*
++ * Device Tree overlay for SSD1331 based SPI OLED display
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++        compatible = "brcm,bcm2835";
++
++        fragment@0 {
++                target = <&spi0>;
++                __overlay__ {
++                        status = "okay";
++                };
++        };
++
++        fragment@1 {
++                target = <&spidev0>;
++                __overlay__ {
++                        status = "disabled";
++                };
++        };
++
++        fragment@2 {
++                target = <&spidev1>;
++                __overlay__ {
++                        status = "disabled";
++                };
++        };
++
++        fragment@3 {
++                target = <&gpio>;
++                __overlay__ {
++                        ssd1331_pins: ssd1331_pins {
++                                brcm,pins = <25 24>;
++                                brcm,function = <1 1>; /* out out */
++                        };
++                };
++        };
++
++        fragment@4 {
++                target = <&spi0>;
++                __overlay__ {
++                        /* needed to avoid dtc warning */
++                        #address-cells = <1>;
++                        #size-cells = <0>;
++
++                        ssd1331: ssd1331@0{
++                                compatible = "solomon,ssd1331";
++                                reg = <0>;
++                                pinctrl-names = "default";
++                                pinctrl-0 = <&ssd1331_pins>;
++
++                                spi-max-frequency = <4500000>;
++                                bgr = <0>;
++                                bpp = <16>;
++                                rotate = <0>;
++                                fps = <25>;
++                                buswidth = <8>;
++                                reset-gpios = <&gpio 25 1>;
++                                dc-gpios = <&gpio 24 0>;
++                                debug = <0>;
++
++                                solomon,height = <64>;
++                                solomon,width = <96>;
++                                solomon,page-offset = <0>;
++                        };
++                };
++        };
++
++        __overrides__ {
++                speed     = <&ssd1331>,"spi-max-frequency:0";
++                rotate    = <&ssd1331>,"rotate:0";
++                fps       = <&ssd1331>,"fps:0";
++                debug     = <&ssd1331>,"debug:0";
++                dc_pin    = <&ssd1331>,"dc-gpios:4",
++                            <&ssd1331_pins>,"brcm,pins:4";
++                reset_pin = <&ssd1331>,"reset-gpios:4",
++                            <&ssd1331_pins>,"brcm,pins:0";
++        };
++};
+diff --git a/arch/arm/boot/dts/overlays/ssd1351-spi-overlay.dts b/arch/arm/boot/dts/overlays/ssd1351-spi-overlay.dts
+new file mode 100644
+index 000000000000..ffc872c60648
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ssd1351-spi-overlay.dts
+@@ -0,0 +1,83 @@
++/*
++ * Device Tree overlay for SSD1351 based SPI OLED display
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			ssd1351_pins: ssd1351_pins {
++                                brcm,pins = <25 24>;
++                                brcm,function = <1 1>; /* out out */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			ssd1351: ssd1351@0{
++				compatible = "solomon,ssd1351";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&ssd1351_pins>;
++
++				spi-max-frequency = <4500000>;
++				bgr = <0>;
++				bpp = <16>;
++				rotate = <0>;
++				fps = <25>;
++				buswidth = <8>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				debug = <0>;
++
++				solomon,height = <128>;
++				solomon,width = <128>;
++				solomon,page-offset = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		speed     = <&ssd1351>,"spi-max-frequency:0";
++		rotate    = <&ssd1351>,"rotate:0";
++		fps       = <&ssd1351>,"fps:0";
++		debug     = <&ssd1351>,"debug:0";
++		dc_pin    = <&ssd1351>,"dc-gpios:4",
++		            <&ssd1351_pins>,"brcm,pins:4";
++		reset_pin = <&ssd1351>,"reset-gpios:4",
++		            <&ssd1351_pins>,"brcm,pins:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/superaudioboard-overlay.dts b/arch/arm/boot/dts/overlays/superaudioboard-overlay.dts
+new file mode 100755
+index 000000000000..bad61535981e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/superaudioboard-overlay.dts
+@@ -0,0 +1,73 @@
++// Definitions for SuperAudioBoard
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "simple-audio-card";
++			i2s-controller = <&i2s>;
++			status = "okay";
++
++			simple-audio-card,name = "SuperAudioBoard";
++
++			simple-audio-card,widgets =
++				"Line", "Line In",
++				"Line", "Line Out";
++
++			simple-audio-card,routing =
++				"Line Out","AOUTA+",
++				"Line Out","AOUTA-",
++				"Line Out","AOUTB+",
++				"Line Out","AOUTB-",
++				"AINA","Line In",
++				"AINB","Line In";
++
++			simple-audio-card,format = "i2s";
++
++			simple-audio-card,bitclock-master = <&sound_master>;
++			simple-audio-card,frame-master = <&sound_master>;
++
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++				dai-tdm-slot-num = <2>;
++				dai-tdm-slot-width = <32>;
++			};
++
++			sound_master: simple-audio-card,codec {
++				sound-dai = <&cs4271>;
++				system-clock-frequency = <24576000>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++    
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			cs4271: cs4271@10 {
++				#sound-dai-cells = <0>;
++				compatible = "cirrus,cs4271";
++				reg = <0x10>;
++				status = "okay";
++				reset-gpio = <&gpio 26 0>; /* Pin 26, active high */
++			};
++		};
++	};
++	__overrides__ {
++		gpiopin = <&cs4271>,"reset-gpio:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/sx150x-overlay.dts b/arch/arm/boot/dts/overlays/sx150x-overlay.dts
+new file mode 100644
+index 000000000000..1d1069345da2
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/sx150x-overlay.dts
+@@ -0,0 +1,1706 @@
++// Definitions for SX150x I2C GPIO Expanders from Semtech
++
++// dtparams:
++//     sx150<x>-<n>-<m>          - Enables SX150X device on I2C#<n> with slave address <m>. <x> may be 1-9.
++//                                 <n> may be 0 or 1.  Permissible values of <m> (which is denoted in hex)
++//                                 depend on the device variant.
++//                                 For SX1501, SX1502, SX1504 and SX1505, <m> may be 20 or 21.
++//                                 For SX1503 and SX1506, <m> may be 20.
++//                                 For SX1507 and SX1509, <m> may be 3E, 3F, 70 or 71.
++//                                 For SX1508, <m> may be 20, 21, 22 or 23.
++//     sx150<x>-<n>-<m>-int-gpio - Integer, enables interrupts on SX150X device on I2C#<n> with slave address <m>,
++//                                 specifies the GPIO pin to which NINT output of SX150X is connected.
++//
++//
++// Example 1: A single SX1505 device on I2C#1 with its slave address set to 0x20 and NINT output connected to GPIO25:
++// dtoverlay=sx150x:sx1505-1-20,sx1505-1-20-int-gpio=25
++//
++// Example 2: Two SX1507 devices on I2C#0 with their slave addresses set to 0x3E and 0x70 (interrupts not used):
++// dtoverlay=sx150x:sx1507-0-3E,sx1507-0-70
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	// Enable I2C#0 interface
++	fragment@0 {
++		target = <&i2c0>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	// Enable I2C#1 interface
++	fragment@1 {
++		target = <&i2c1>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	// Enable a SX1501 on I2C#0 at slave addr 0x20
++	fragment@2 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1501_0_20: sx150x@20 {
++				compatible = "semtech,sx1501q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1501-0-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1501 on I2C#1 at slave addr 0x20
++	fragment@3 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1501_1_20: sx150x@20 {
++				compatible = "semtech,sx1501q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1501-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1501 on I2C#0 at slave addr 0x21
++	fragment@4 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1501_0_21: sx150x@21 {
++				compatible = "semtech,sx1501q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1501-0-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1501 on I2C#1 at slave addr 0x21
++	fragment@5 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1501_1_21: sx150x@21 {
++				compatible = "semtech,sx1501q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1501-1-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1502 on I2C#0 at slave addr 0x20
++	fragment@6 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1502_0_20: sx150x@20 {
++				compatible = "semtech,sx1502q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1502-0-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1502 on I2C#1 at slave addr 0x20
++	fragment@7 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1502_1_20: sx150x@20 {
++				compatible = "semtech,sx1502q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1502-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1502 on I2C#0 at slave addr 0x21
++	fragment@8 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1502_0_21: sx150x@21 {
++				compatible = "semtech,sx1502q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1502-0-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1502 on I2C#1 at slave addr 0x21
++	fragment@9 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1502_1_21: sx150x@21 {
++				compatible = "semtech,sx1502q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1501-1-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1503 on I2C#0 at slave addr 0x20
++	fragment@10 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1503_0_20: sx150x@20 {
++				compatible = "semtech,sx1503q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1503-0-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1503 on I2C#1 at slave addr 0x20
++	fragment@11 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1503_1_20: sx150x@20 {
++				compatible = "semtech,sx1503q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1503-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1504 on I2C#0 at slave addr 0x20
++	fragment@12 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1504_0_20: sx150x@20 {
++				compatible = "semtech,sx1504q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1504-0-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1504 on I2C#1 at slave addr 0x20
++	fragment@13 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1504_1_20: sx150x@20 {
++				compatible = "semtech,sx1504q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1504-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1504 on I2C#0 at slave addr 0x21
++	fragment@14 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1504_0_21: sx150x@21 {
++				compatible = "semtech,sx1504q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1504-0-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1504 on I2C#1 at slave addr 0x21
++	fragment@15 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1504_1_21: sx150x@21 {
++				compatible = "semtech,sx1504q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1504-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1505 on I2C#0 at slave addr 0x20
++	fragment@16 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1505_0_20: sx150x@20 {
++				compatible = "semtech,sx1505q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1505-0-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1505 on I2C#1 at slave addr 0x20
++	fragment@17 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1505_1_20: sx150x@20 {
++				compatible = "semtech,sx1505q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1505-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1505 on I2C#0 at slave addr 0x21
++	fragment@18 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1505_0_21: sx150x@21 {
++				compatible = "semtech,sx1505q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1505-0-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1505 on I2C#1 at slave addr 0x21
++	fragment@19 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1505_1_21: sx150x@21 {
++				compatible = "semtech,sx1505q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1505-1-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1506 on I2C#0 at slave addr 0x20
++	fragment@20 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1506_0_20: sx150x@20 {
++				compatible = "semtech,sx1506q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1506-0-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1506 on I2C#1 at slave addr 0x20
++	fragment@21 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1506_1_20: sx150x@20 {
++				compatible = "semtech,sx1506q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1506-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#0 at slave addr 0x3E
++	fragment@22 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_0_3E: sx150x@3E {
++				compatible = "semtech,sx1507q";
++				reg = <0x3E>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507_0_3E-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#1 at slave addr 0x3E
++	fragment@23 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_1_3E: sx150x@3E {
++				compatible = "semtech,sx1507q";
++				reg = <0x3E>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507_1_3E-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#0 at slave addr 0x3F
++	fragment@24 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_0_3F: sx150x@3F {
++				compatible = "semtech,sx1507q";
++				reg = <0x3F>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507_0_3F-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#1 at slave addr 0x3F
++	fragment@25 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_1_3F: sx150x@3F {
++				compatible = "semtech,sx1507q";
++				reg = <0x3F>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507_1_3F-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#0 at slave addr 0x70
++	fragment@26 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_0_70: sx150x@70 {
++				compatible = "semtech,sx1507q";
++				reg = <0x70>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507-0-70-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#1 at slave addr 0x70
++	fragment@27 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_1_70: sx150x@70 {
++				compatible = "semtech,sx1507q";
++				reg = <0x70>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507-1-70-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#0 at slave addr 0x71
++	fragment@28 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_0_71: sx150x@71 {
++				compatible = "semtech,sx1507q";
++				reg = <0x71>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507-0-71-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1507 on I2C#1 at slave addr 0x71
++	fragment@29 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1507_1_71: sx150x@71 {
++				compatible = "semtech,sx1507q";
++				reg = <0x71>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1507-1-71-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#0 at slave addr 0x20
++	fragment@30 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_0_20: sx150x@20 {
++				compatible = "semtech,sx1508q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-0-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#1 at slave addr 0x20
++	fragment@31 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_1_20: sx150x@20 {
++				compatible = "semtech,sx1508q";
++				reg = <0x20>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-1-20-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#0 at slave addr 0x21
++	fragment@32 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_0_21: sx150x@21 {
++				compatible = "semtech,sx1508q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-0-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#1 at slave addr 0x21
++	fragment@33 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_1_21: sx150x@21 {
++				compatible = "semtech,sx1508q";
++				reg = <0x21>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-1-21-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#0 at slave addr 0x22
++	fragment@34 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_0_22: sx150x@22 {
++				compatible = "semtech,sx1508q";
++				reg = <0x22>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-0-22-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#1 at slave addr 0x22
++	fragment@35 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_1_22: sx150x@22 {
++				compatible = "semtech,sx1508q";
++				reg = <0x22>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-1-22-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#0 at slave addr 0x23
++	fragment@36 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_0_23: sx150x@23 {
++				compatible = "semtech,sx1508q";
++				reg = <0x23>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-0-23-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1508 on I2C#1 at slave addr 0x23
++	fragment@37 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1508_1_23: sx150x@23 {
++				compatible = "semtech,sx1508q";
++				reg = <0x23>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1508-1-23-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#0 at slave addr 0x3E
++	fragment@38 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_0_3E: sx150x@3E {
++				compatible = "semtech,sx1509q";
++				reg = <0x3E>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509_0_3E-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#1 at slave addr 0x3E
++	fragment@39 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_1_3E: sx150x@3E {
++				compatible = "semtech,sx1509q";
++				reg = <0x3E>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509_1_3E-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#0 at slave addr 0x3F
++	fragment@40 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_0_3F: sx150x@3F {
++				compatible = "semtech,sx1509q";
++				reg = <0x3F>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509_0_3F-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#1 at slave addr 0x3F
++	fragment@41 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_1_3F: sx150x@3F {
++				compatible = "semtech,sx1509q";
++				reg = <0x3F>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509_1_3F-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#0 at slave addr 0x70
++	fragment@42 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_0_70: sx150x@70 {
++				compatible = "semtech,sx1509q";
++				reg = <0x70>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509-0-70-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#1 at slave addr 0x70
++	fragment@43 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_1_70: sx150x@70 {
++				compatible = "semtech,sx1509q";
++				reg = <0x70>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509-1-70-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#0 at slave addr 0x71
++	fragment@44 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_0_71: sx150x@71 {
++				compatible = "semtech,sx1509q";
++				reg = <0x71>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509-0-71-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable a SX1509 on I2C#1 at slave addr 0x71
++	fragment@45 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			sx1509_1_71: sx150x@71 {
++				compatible = "semtech,sx1509q";
++				reg = <0x71>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				#interrupt-cells = <2>;
++				interrupts = <25 2>; /* 1st word overwritten by sx1509-1-71-int-gpio parameter
++				                        2nd word is 2 for falling-edge triggered */
++				status = "okay";
++			};
++		};
++	};
++
++	// Enable interrupts for a SX1501 on I2C#0 at slave addr 0x20
++	fragment@46 {
++		target = <&sx1501_0_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1501 on I2C#1 at slave addr 0x20
++	fragment@47 {
++		target = <&sx1501_1_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1501 on I2C#0 at slave addr 0x21
++	fragment@48 {
++		target = <&sx1501_0_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1501 on I2C#1 at slave addr 0x21
++	fragment@49 {
++		target = <&sx1501_1_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1502 on I2C#0 at slave addr 0x20
++	fragment@50 {
++		target = <&sx1502_0_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1502 on I2C#1 at slave addr 0x20
++	fragment@51 {
++		target = <&sx1502_1_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1502 on I2C#0 at slave addr 0x21
++	fragment@52 {
++		target = <&sx1502_0_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1502 on I2C#1 at slave addr 0x21
++	fragment@53 {
++		target = <&sx1502_1_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1503 on I2C#0 at slave addr 0x20
++	fragment@54 {
++		target = <&sx1503_0_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1503 on I2C#1 at slave addr 0x20
++	fragment@55 {
++		target = <&sx1503_1_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1504 on I2C#0 at slave addr 0x20
++	fragment@56 {
++		target = <&sx1504_0_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1504 on I2C#1 at slave addr 0x20
++	fragment@57 {
++		target = <&sx1504_1_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1504 on I2C#0 at slave addr 0x21
++	fragment@58 {
++		target = <&sx1504_0_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1504 on I2C#1 at slave addr 0x21
++	fragment@59 {
++		target = <&sx1504_1_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1505 on I2C#0 at slave addr 0x20
++	fragment@60 {
++		target = <&sx1505_0_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1505 on I2C#1 at slave addr 0x20
++	fragment@61 {
++		target = <&sx1505_1_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1505 on I2C#0 at slave addr 0x21
++	fragment@62 {
++		target = <&sx1505_0_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1505 on I2C#1 at slave addr 0x21
++	fragment@63 {
++		target = <&sx1505_1_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1506 on I2C#0 at slave addr 0x20
++	fragment@64 {
++		target = <&sx1506_0_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1506 on I2C#1 at slave addr 0x20
++	fragment@65 {
++		target = <&sx1506_1_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#0 at slave addr 0x3E
++	fragment@66 {
++		target = <&sx1507_0_3E>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_3E_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#1 at slave addr 0x3E
++	fragment@67 {
++		target = <&sx1507_1_3E>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_3E_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#0 at slave addr 0x3F
++	fragment@68 {
++		target = <&sx1507_0_3F>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_3F_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#1 at slave addr 0x3F
++	fragment@69 {
++		target = <&sx1507_1_3F>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_3F_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#0 at slave addr 0x70
++	fragment@70 {
++		target = <&sx1507_0_70>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_70_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#1 at slave addr 0x70
++	fragment@71 {
++		target = <&sx1507_1_70>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_70_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#0 at slave addr 0x71
++	fragment@72 {
++		target = <&sx1507_0_71>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_71_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1507 on I2C#1 at slave addr 0x71
++	fragment@73 {
++		target = <&sx1507_1_71>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_71_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#0 at slave addr 0x20
++	fragment@74 {
++		target = <&sx1508_0_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#1 at slave addr 0x20
++	fragment@75 {
++		target = <&sx1508_1_20>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_20_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#0 at slave addr 0x21
++	fragment@76 {
++		target = <&sx1508_0_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#1 at slave addr 0x21
++	fragment@77 {
++		target = <&sx1508_1_21>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_21_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#0 at slave addr 0x22
++	fragment@78 {
++		target = <&sx1508_0_22>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_22_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#1 at slave addr 0x22
++	fragment@79 {
++		target = <&sx1508_1_22>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_22_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#0 at slave addr 0x23
++	fragment@80 {
++		target = <&sx1508_0_23>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_23_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1508 on I2C#1 at slave addr 0x23
++	fragment@81 {
++		target = <&sx1508_1_23>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_23_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#0 at slave addr 0x3E
++	fragment@82 {
++		target = <&sx1509_0_3E>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_3E_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#1 at slave addr 0x3E
++	fragment@83 {
++		target = <&sx1509_1_3E>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_3E_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#0 at slave addr 0x3F
++	fragment@84 {
++		target = <&sx1509_0_3F>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_3F_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#1 at slave addr 0x3F
++	fragment@85 {
++		target = <&sx1509_1_3F>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_3F_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#0 at slave addr 0x70
++	fragment@86 {
++		target = <&sx1509_0_70>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_70_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#1 at slave addr 0x70
++	fragment@87 {
++		target = <&sx1509_1_70>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_70_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#0 at slave addr 0x71
++	fragment@88 {
++		target = <&sx1509_0_71>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_0_71_pins>;
++		};
++	};
++
++	// Enable interrupts for a SX1509 on I2C#1 at slave addr 0x71
++	fragment@89 {
++		target = <&sx1509_1_71>;
++		__dormant__ {
++			interrupt-parent = <&gpio>;
++			interrupt-controller;
++			pinctrl-names = "default";
++			pinctrl-0 = <&sx150x_1_71_pins>;
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x20
++        // Configure as a input with no pull-up/down
++	fragment@90 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_20_pins: sx150x_0_20_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-20-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x20
++        // Configure as a input with no pull-up/down
++	fragment@91 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_20_pins: sx150x_1_20_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-20-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x21
++        // Configure as a input with no pull-up/down
++	fragment@92 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_21_pins: sx150x_0_21_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-21-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x21
++        // Configure as a input with no pull-up/down
++	fragment@93 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_21_pins: sx150x_1_21_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-21-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x22
++        // Configure as a input with no pull-up/down
++	fragment@94 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_22_pins: sx150x_0_22_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-22-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x22
++        // Configure as a input with no pull-up/down
++	fragment@95 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_22_pins: sx150x_1_22_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-22-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x23
++        // Configure as a input with no pull-up/down
++	fragment@96 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_23_pins: sx150x_0_23_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-23-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x23
++        // Configure as a input with no pull-up/down
++	fragment@97 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_23_pins: sx150x_1_23_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-23-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x3E
++        // Configure as a input with no pull-up/down
++	fragment@98 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_3E_pins: sx150x_0_3E_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-3E-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x3E
++        // Configure as a input with no pull-up/down
++	fragment@99 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_3E_pins: sx150x_1_3E_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-3E-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x3F
++        // Configure as a input with no pull-up/down
++	fragment@100 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_3F_pins: sx150x_0_3F_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-3F-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x3F
++        // Configure as a input with no pull-up/down
++	fragment@101 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_3F_pins: sx150x_1_3F_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-3F-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x70
++        // Configure as a input with no pull-up/down
++	fragment@102 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_70_pins: sx150x_0_70_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-70-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x70
++        // Configure as a input with no pull-up/down
++	fragment@103 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_70_pins: sx150x_1_70_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-70-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x71
++        // Configure as a input with no pull-up/down
++	fragment@104 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_0_71_pins: sx150x_0_71_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-0-71-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	// Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x71
++        // Configure as a input with no pull-up/down
++	fragment@105 {
++		target = <&gpio>;
++		__dormant__ {
++			sx150x_1_71_pins: sx150x_1_71_pins {
++				brcm,pins = <0>;  /* overwritten by sx150x-1-71-int-gpio parameter */
++				brcm,function = <0>;
++				brcm,pull = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		sx1501-0-20          = <0>,"+0+2";
++		sx1501-1-20          = <0>,"+1+3";
++		sx1501-0-21          = <0>,"+0+4";
++		sx1501-1-21          = <0>,"+1+5";
++		sx1502-0-20          = <0>,"+0+6";
++		sx1502-1-20          = <0>,"+1+7";
++		sx1502-0-21          = <0>,"+0+8";
++		sx1502-1-21          = <0>,"+1+9";
++		sx1503-0-20          = <0>,"+0+10";
++		sx1503-1-20          = <0>,"+1+11";
++		sx1504-0-20          = <0>,"+0+12";
++		sx1504-1-20          = <0>,"+1+13";
++		sx1504-0-21          = <0>,"+0+14";
++		sx1504-1-21          = <0>,"+1+15";
++		sx1505-0-20          = <0>,"+0+16";
++		sx1505-1-20          = <0>,"+1+17";
++		sx1505-0-21          = <0>,"+0+18";
++		sx1505-1-21          = <0>,"+1+19";
++		sx1506-0-20          = <0>,"+0+20";
++		sx1506-1-20          = <0>,"+1+21";
++		sx1507-0-3E          = <0>,"+0+22";
++		sx1507-1-3E          = <0>,"+1+23";
++		sx1507-0-3F          = <0>,"+0+24";
++		sx1507-1-3F          = <0>,"+1+25";
++		sx1507-0-70          = <0>,"+0+26";
++		sx1507-1-70          = <0>,"+1+27";
++		sx1507-0-71          = <0>,"+0+28";
++		sx1507-1-71          = <0>,"+1+29";
++		sx1508-0-20          = <0>,"+0+30";
++		sx1508-1-20          = <0>,"+1+31";
++		sx1508-0-21          = <0>,"+0+32";
++		sx1508-1-21          = <0>,"+1+33";
++		sx1508-0-22          = <0>,"+0+34";
++		sx1508-1-22          = <0>,"+1+35";
++		sx1508-0-23          = <0>,"+0+36";
++		sx1508-1-23          = <0>,"+1+37";
++		sx1509-0-3E          = <0>,"+0+38";
++		sx1509-1-3E          = <0>,"+1+39";
++		sx1509-0-3F          = <0>,"+0+40";
++		sx1509-1-3F          = <0>,"+1+41";
++		sx1509-0-70          = <0>,"+0+42";
++		sx1509-1-70          = <0>,"+1+43";
++		sx1509-0-71          = <0>,"+0+44";
++		sx1509-1-71          = <0>,"+1+45";
++		sx1501-0-20-int-gpio = <0>,"+46+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1501_0_20>,"interrupts:0";
++		sx1501-1-20-int-gpio = <0>,"+47+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1501_1_20>,"interrupts:0";
++		sx1501-0-21-int-gpio = <0>,"+48+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1501_0_21>,"interrupts:0";
++		sx1501-1-21-int-gpio = <0>,"+49+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1501_1_21>,"interrupts:0";
++		sx1502-0-20-int-gpio = <0>,"+50+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1502_0_20>,"interrupts:0";
++		sx1502-1-20-int-gpio = <0>,"+51+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1502_1_20>,"interrupts:0";
++		sx1502-0-21-int-gpio = <0>,"+52+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1502_0_21>,"interrupts:0";
++		sx1502-1-21-int-gpio = <0>,"+53+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1502_1_21>,"interrupts:0";
++		sx1503-0-20-int-gpio = <0>,"+54+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1503_0_20>,"interrupts:0";
++		sx1503-1-20-int-gpio = <0>,"+55+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1503_1_20>,"interrupts:0";
++		sx1504-0-20-int-gpio = <0>,"+56+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1504_0_20>,"interrupts:0";
++		sx1504-1-20-int-gpio = <0>,"+57+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1504_1_20>,"interrupts:0";
++		sx1504-0-21-int-gpio = <0>,"+58+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1504_0_21>,"interrupts:0";
++		sx1504-1-21-int-gpio = <0>,"+59+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1504_1_21>,"interrupts:0";
++		sx1505-0-20-int-gpio = <0>,"+60+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1505_0_20>,"interrupts:0";
++		sx1505-1-20-int-gpio = <0>,"+61+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1505_1_20>,"interrupts:0";
++		sx1505-0-21-int-gpio = <0>,"+62+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1505_0_21>,"interrupts:0";
++		sx1505-1-21-int-gpio = <0>,"+63+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1505_1_21>,"interrupts:0";
++		sx1506-0-20-int-gpio = <0>,"+64+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1506_0_20>,"interrupts:0";
++		sx1506-1-20-int-gpio = <0>,"+65+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1506_1_20>,"interrupts:0";
++		sx1507-0-3E-int-gpio = <0>,"+66+98",  <&sx150x_0_3E_pins>,"brcm,pins:0", <&sx1507_0_3E>,"interrupts:0";
++		sx1507-1-3E-int-gpio = <0>,"+67+99",  <&sx150x_1_3E_pins>,"brcm,pins:0", <&sx1507_1_3E>,"interrupts:0";
++		sx1507-0-3F-int-gpio = <0>,"+68+100", <&sx150x_0_3F_pins>,"brcm,pins:0", <&sx1507_0_3F>,"interrupts:0";
++		sx1507-1-3F-int-gpio = <0>,"+69+101", <&sx150x_1_3F_pins>,"brcm,pins:0", <&sx1507_1_3F>,"interrupts:0";
++		sx1507-0-70-int-gpio = <0>,"+60+102", <&sx150x_0_70_pins>,"brcm,pins:0", <&sx1507_0_70>,"interrupts:0";
++		sx1507-1-70-int-gpio = <0>,"+71+103", <&sx150x_1_70_pins>,"brcm,pins:0", <&sx1507_1_70>,"interrupts:0";
++		sx1507-0-71-int-gpio = <0>,"+72+104", <&sx150x_0_71_pins>,"brcm,pins:0", <&sx1507_0_71>,"interrupts:0";
++		sx1507-1-71-int-gpio = <0>,"+73+105", <&sx150x_1_71_pins>,"brcm,pins:0", <&sx1507_1_71>,"interrupts:0";
++		sx1508-0-20-int-gpio = <0>,"+74+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1508_0_20>,"interrupts:0";
++		sx1508-1-20-int-gpio = <0>,"+75+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1508_1_20>,"interrupts:0";
++		sx1508-0-21-int-gpio = <0>,"+76+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1508_0_21>,"interrupts:0";
++		sx1508-1-21-int-gpio = <0>,"+77+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1508_1_21>,"interrupts:0";
++		sx1508-0-22-int-gpio = <0>,"+78+94",  <&sx150x_0_22_pins>,"brcm,pins:0", <&sx1508_0_22>,"interrupts:0";
++		sx1508-1-22-int-gpio = <0>,"+79+95",  <&sx150x_1_22_pins>,"brcm,pins:0", <&sx1508_1_22>,"interrupts:0";
++		sx1508-0-23-int-gpio = <0>,"+80+96",  <&sx150x_0_23_pins>,"brcm,pins:0", <&sx1508_0_23>,"interrupts:0";
++		sx1508-1-23-int-gpio = <0>,"+81+97",  <&sx150x_1_23_pins>,"brcm,pins:0", <&sx1508_1_23>,"interrupts:0";
++		sx1509-0-3E-int-gpio = <0>,"+82+98",  <&sx150x_0_3E_pins>,"brcm,pins:0", <&sx1509_0_3E>,"interrupts:0";
++		sx1509-1-3E-int-gpio = <0>,"+83+99",  <&sx150x_1_3E_pins>,"brcm,pins:0", <&sx1509_1_3E>,"interrupts:0";
++		sx1509-0-3F-int-gpio = <0>,"+84+100", <&sx150x_0_3F_pins>,"brcm,pins:0", <&sx1509_0_3F>,"interrupts:0";
++		sx1509-1-3F-int-gpio = <0>,"+85+101", <&sx150x_1_3F_pins>,"brcm,pins:0", <&sx1509_1_3F>,"interrupts:0";
++		sx1509-0-70-int-gpio = <0>,"+86+102", <&sx150x_0_70_pins>,"brcm,pins:0", <&sx1509_0_70>,"interrupts:0";
++		sx1509-1-70-int-gpio = <0>,"+87+103", <&sx150x_1_70_pins>,"brcm,pins:0", <&sx1509_1_70>,"interrupts:0";
++		sx1509-0-71-int-gpio = <0>,"+88+104", <&sx150x_0_71_pins>,"brcm,pins:0", <&sx1509_0_71>,"interrupts:0";
++		sx1509-1-71-int-gpio = <0>,"+89+105", <&sx150x_1_71_pins>,"brcm,pins:0", <&sx1509_1_71>,"interrupts:0";
++	};
++};
++
+diff --git a/arch/arm/boot/dts/overlays/tc358743-audio-overlay.dts b/arch/arm/boot/dts/overlays/tc358743-audio-overlay.dts
+new file mode 100644
+index 000000000000..047695bb0c71
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/tc358743-audio-overlay.dts
+@@ -0,0 +1,52 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions to add I2S audio from the Toshiba TC358743 HDMI to CSI2 bridge.
++// Requires tc358743 overlay to have been loaded to actually function.
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			tc358743_codec: tc358743-codec {
++				#sound-dai-cells = <0>;
++				compatible = "linux,spdif-dir";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		sound_overlay: __overlay__ {
++			compatible = "simple-audio-card";
++			simple-audio-card,format = "i2s";
++			simple-audio-card,name = "tc358743";
++			simple-audio-card,bitclock-master = <&dailink0_slave>;
++			simple-audio-card,frame-master = <&dailink0_slave>;
++			status = "okay";
++
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++				dai-tdm-slot-num = <2>;
++				dai-tdm-slot-width = <32>;
++			};
++			dailink0_slave: simple-audio-card,codec {
++				sound-dai = <&tc358743_codec>;
++			};
++		};
++	};
++
++	__overrides__ {
++		card-name = <&sound_overlay>,"simple-audio-card,name";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/tc358743-overlay.dts b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
+new file mode 100644
+index 000000000000..a1f8af36d2e7
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
+@@ -0,0 +1,107 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for Toshiba TC358743 HDMI to CSI2 bridge on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			tc358743@0f {
++				compatible = "toshiba,tc358743";
++				reg = <0x0f>;
++				status = "okay";
++
++				clocks = <&tc358743_clk>;
++				clock-names = "refclk";
++
++				port {
++					tc358743: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <486000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&tc358743>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&tc358743>;
++		__overlay__ {
++			data-lanes = <1 2>;
++		};
++	};
++
++	fragment@3 {
++		target = <&tc358743>;
++		__dormant__ {
++			data-lanes = <1 2 3 4>;
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@6 {
++		target-path = "/";
++		__overlay__ {
++			tc358743_clk: bridge-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <27000000>;
++			};
++		};
++	};
++
++	fragment@7 {
++		target = <&csi1_ep>;
++		__overlay__ {
++			data-lanes = <1 2>;
++		};
++	};
++
++	fragment@8 {
++		target = <&csi1_ep>;
++		__dormant__ {
++			data-lanes = <1 2 3 4>;
++		};
++	};
++
++	__overrides__ {
++		4lane = <0>, "-2+3-7+8";
++		link-frequency = <&tc358743>,"link-frequencies#0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
+new file mode 100644
+index 000000000000..a102b09e3ab5
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
+@@ -0,0 +1,222 @@
++/*
++ * tinylcd35-overlay.dts
++ *
++ * -------------------------------------------------
++ * www.tinlylcd.com
++ * -------------------------------------------------
++ * Device---Driver-----BUS       GPIO's
++ * display  tinylcd35  spi0.0    25 24 18
++ * touch    ads7846    spi0.1    5
++ * rtc      ds1307     i2c1-0068
++ * rtc      pcf8563    i2c1-0051
++ * keypad   gpio-keys  --------- 17 22 27 23 28
++ *
++ *
++ * TinyLCD.com 3.5 inch TFT
++ *
++ *  Version 001
++ *  5/3/2015  -- Noralf Trønnes     Initial Device tree framework
++ *  10/3/2015 -- tinylcd@gmail.com  added ds1307 support.
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			tinylcd35_pins: tinylcd35_pins {
++				brcm,pins = <25 24 18>;
++				brcm,function = <1>; /* out */
++			};
++			tinylcd35_ts_pins: tinylcd35_ts_pins {
++				brcm,pins = <5>;
++				brcm,function = <0>; /* in */
++			};
++			keypad_pins: keypad_pins {
++				brcm,pins = <4 17 22 23 27>;
++				brcm,function = <0>; /* in */
++				brcm,pull = <1>; /* down */
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			tinylcd35: tinylcd35@0{
++				compatible = "neosec,tinylcd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&tinylcd35_pins>,
++					    <&tinylcd35_ts_pins>;
++
++				spi-max-frequency = <48000000>;
++				rotate = <270>;
++				fps = <20>;
++				bgr;
++				buswidth = <8>;
++				reset-gpios = <&gpio 25 1>;
++				dc-gpios = <&gpio 24 0>;
++				led-gpios = <&gpio 18 0>;
++				debug = <0>;
++
++				init = <0x10000B0 0x80
++					0x10000C0 0x0A 0x0A
++					0x10000C1 0x01 0x01
++					0x10000C2 0x33
++					0x10000C5 0x00 0x42 0x80
++					0x10000B1 0xD0 0x11
++					0x10000B4 0x02
++					0x10000B6 0x00 0x22 0x3B
++					0x10000B7 0x07
++					0x1000036 0x58
++					0x10000F0 0x36 0xA5 0xD3
++					0x10000E5 0x80
++					0x10000E5 0x01
++					0x10000B3 0x00
++					0x10000E5 0x00
++					0x10000F0 0x36 0xA5 0x53
++					0x10000E0 0x00 0x35 0x33 0x00 0x00 0x00 0x00 0x35 0x33 0x00 0x00 0x00
++					0x100003A 0x55
++					0x1000011
++					0x2000001
++					0x1000029>;
++			};
++
++			tinylcd35_ts: tinylcd35_ts@1 {
++				compatible = "ti,ads7846";
++				reg = <1>;
++				status = "disabled";
++
++				spi-max-frequency = <2000000>;
++				interrupts = <5 2>; /* high-to-low edge triggered */
++				interrupt-parent = <&gpio>;
++				pendown-gpio = <&gpio 5 0>;
++				ti,x-plate-ohms = /bits/ 16 <100>;
++				ti,pressure-max = /bits/ 16 <255>;
++			};
++		};
++	};
++
++	/*  RTC    */
++
++	fragment@5 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			pcf8563: pcf8563@51 {
++				compatible = "nxp,pcf8563";
++				reg = <0x51>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@6 {
++		target = <&i2c1>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			ds1307: ds1307@68 {
++				compatible = "dallas,ds1307";
++				reg = <0x68>;
++				status = "okay";
++			};
++		};
++	};
++
++	/*
++	 * Values for input event code is found under the
++	 * 'Keys and buttons' heading in include/uapi/linux/input.h
++	 */
++	fragment@7 {
++		target-path = "/soc";
++		__overlay__ {
++			keypad: keypad {
++				compatible = "gpio-keys";
++				pinctrl-names = "default";
++				pinctrl-0 = <&keypad_pins>;
++				status = "disabled";
++				autorepeat;
++
++				button@17 {
++					label = "GPIO KEY_UP";
++					linux,code = <103>;
++					gpios = <&gpio 17 0>;
++				};
++				button@22 {
++					label = "GPIO KEY_DOWN";
++					linux,code = <108>;
++					gpios = <&gpio 22 0>;
++				};
++				button@27 {
++					label = "GPIO KEY_LEFT";
++					linux,code = <105>;
++					gpios = <&gpio 27 0>;
++				};
++				button@23 {
++					label = "GPIO KEY_RIGHT";
++					linux,code = <106>;
++					gpios = <&gpio 23 0>;
++				};
++				button@4 {
++					label = "GPIO KEY_ENTER";
++					linux,code = <28>;
++					gpios = <&gpio 4 0>;
++				};
++			};
++		};
++	};
++
++	__overrides__ {
++		speed =      <&tinylcd35>,"spi-max-frequency:0";
++		rotate =     <&tinylcd35>,"rotate:0";
++		fps =        <&tinylcd35>,"fps:0";
++		debug =      <&tinylcd35>,"debug:0";
++		touch =      <&tinylcd35_ts>,"status";
++		touchgpio =  <&tinylcd35_ts_pins>,"brcm,pins:0",
++			     <&tinylcd35_ts>,"interrupts:0",
++			     <&tinylcd35_ts>,"pendown-gpio:4";
++		xohms =      <&tinylcd35_ts>,"ti,x-plate-ohms;0";
++		rtc-pcf =    <0>,"=5";
++		rtc-ds =     <0>,"=6";
++		keypad =     <&keypad>,"status";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/tpm-slb9670-overlay.dts b/arch/arm/boot/dts/overlays/tpm-slb9670-overlay.dts
+new file mode 100644
+index 000000000000..e69188503ca3
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/tpm-slb9670-overlay.dts
+@@ -0,0 +1,44 @@
++/*
++ * Device Tree overlay for the Infineon SLB9670 Trusted Platform Module add-on
++ * boards, which can be used as a secure key storage and hwrng.
++ * available as "Iridium SLB9670" by Infineon and "LetsTrust TPM" by pi3g.
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			slb9670: slb9670@1 {
++				compatible = "infineon,slb9670";
++				reg = <1>;	/* CE1 */
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <32000000>;
++				status = "okay";
++			};
++
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/uart0-overlay.dts b/arch/arm/boot/dts/overlays/uart0-overlay.dts
+new file mode 100755
+index 000000000000..73d563bbaabf
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/uart0-overlay.dts
+@@ -0,0 +1,32 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&uart0>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart0_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			uart0_pins: uart0_pins {
++				brcm,pins = <14 15>;
++				brcm,function = <4>; /* alt0 */
++				brcm,pull = <0 2>;
++			};
++		};
++	};
++
++	__overrides__ {
++		txd0_pin = <&uart0_pins>,"brcm,pins:0";
++		rxd0_pin = <&uart0_pins>,"brcm,pins:4";
++		pin_func = <&uart0_pins>,"brcm,function:0";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/uart1-overlay.dts b/arch/arm/boot/dts/overlays/uart1-overlay.dts
+new file mode 100644
+index 000000000000..986d725a2652
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/uart1-overlay.dts
+@@ -0,0 +1,38 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&uart1>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart1_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			uart1_pins: uart1_pins {
++				brcm,pins = <14 15>;
++				brcm,function = <2>; /* alt5 */
++				brcm,pull = <0 2>;
++			};
++		};
++	};
++
++	fragment@2 {
++		target-path = "/chosen";
++		__overlay__ {
++			bootargs = "8250.nr_uarts=1";
++		};
++	};
++
++	__overrides__ {
++		txd1_pin = <&uart1_pins>,"brcm,pins:0";
++		rxd1_pin = <&uart1_pins>,"brcm,pins:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/uart2-overlay.dts b/arch/arm/boot/dts/overlays/uart2-overlay.dts
+new file mode 100644
+index 000000000000..9face240aca1
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/uart2-overlay.dts
+@@ -0,0 +1,27 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&uart2>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart2_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&uart2_pins>;
++		__dormant__ {
++			brcm,pins = <0 1 2 3>;
++			brcm,pull = <0 2 2 0>;
++		};
++	};
++
++	__overrides__ {
++		ctsrts = <0>,"=1";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/uart3-overlay.dts b/arch/arm/boot/dts/overlays/uart3-overlay.dts
+new file mode 100644
+index 000000000000..ae9f9fe5ea1d
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/uart3-overlay.dts
+@@ -0,0 +1,27 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&uart3>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart3_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&uart3_pins>;
++		__dormant__ {
++			brcm,pins = <4 5 6 7>;
++			brcm,pull = <0 2 2 0>;
++		};
++	};
++
++	__overrides__ {
++		ctsrts = <0>,"=1";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/uart4-overlay.dts b/arch/arm/boot/dts/overlays/uart4-overlay.dts
+new file mode 100644
+index 000000000000..ac004ffbadbf
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/uart4-overlay.dts
+@@ -0,0 +1,27 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&uart4>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart4_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&uart4_pins>;
++		__dormant__ {
++			brcm,pins = <8 9 10 11>;
++			brcm,pull = <0 2 2 0>;
++		};
++	};
++
++	__overrides__ {
++		ctsrts = <0>,"=1";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/uart5-overlay.dts b/arch/arm/boot/dts/overlays/uart5-overlay.dts
+new file mode 100644
+index 000000000000..04eaf376effe
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/uart5-overlay.dts
+@@ -0,0 +1,27 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target = <&uart5>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&uart5_pins>;
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&uart5_pins>;
++		__dormant__ {
++			brcm,pins = <12 13 14 15>;
++			brcm,pull = <0 2 2 0>;
++		};
++	};
++
++	__overrides__ {
++		ctsrts = <0>,"=1";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/udrc-overlay.dts b/arch/arm/boot/dts/overlays/udrc-overlay.dts
+new file mode 100644
+index 000000000000..ae7c37996894
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/udrc-overlay.dts
+@@ -0,0 +1,128 @@
++#include <dt-bindings/clock/bcm2835.h>
++/*
++ * Device tree overlay for the Universal Digital Radio Controller
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++    fragment@0 {
++        target = <&i2s>;
++        __overlay__ {
++            clocks = <&clocks BCM2835_CLOCK_PCM>;
++            clock-names = "pcm";
++            status = "okay";
++        };
++    };
++
++    fragment@1 {
++        target-path = "/";
++        __overlay__ {
++            regulators {
++                compatible = "simple-bus";
++                #address-cells = <1>;
++                #size-cells = <0>;
++
++                udrc0_ldoin: udrc0_ldoin {
++                    compatible = "regulator-fixed";
++                    regulator-name = "ldoin";
++                    regulator-min-microvolt = <3300000>;
++                    regulator-max-microvolt = <3300000>;
++                    regulator-always-on;
++                };
++            };
++        };
++    };
++
++    fragment@2 {
++        target = <&i2c1>;
++        __overlay__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            status = "okay";
++            clocks = <&clocks BCM2835_CLOCK_VPU>;
++            clock-frequency = <400000>;
++
++            tlv320aic32x4: tlv320aic32x4@18 {
++                compatible = "ti,tlv320aic32x4";
++                #sound-dai-cells = <0>;
++                reg = <0x18>;
++                status = "okay";
++
++                clocks = <&clocks BCM2835_CLOCK_GP0>;
++                clock-names = "mclk";
++                assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
++                assigned-clock-rates = <25000000>;
++
++                pinctrl-names = "default";
++                pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
++
++                reset-gpios = <&gpio 13 0>;
++
++                iov-supply = <&udrc0_ldoin>;
++                ldoin-supply = <&udrc0_ldoin>;
++            };
++        };
++    };
++
++    fragment@3 {
++        target = <&sound>;
++        snd: __overlay__ {
++            compatible = "simple-audio-card";
++            i2s-controller = <&i2s>;
++            status = "okay";
++
++            simple-audio-card,name = "udrc";
++            simple-audio-card,format = "i2s";
++
++            simple-audio-card,bitclock-master = <&dailink0_master>;
++            simple-audio-card,frame-master = <&dailink0_master>;
++
++            simple-audio-card,widgets =
++                "Line", "Line In",
++                "Line", "Line Out";
++
++            simple-audio-card,routing =
++                "IN1_R", "Line In",
++                "IN1_L", "Line In",
++                "CM_L", "Line In",
++                "CM_R", "Line In",
++                "Line Out", "LOR",
++                "Line Out", "LOL";
++
++            dailink0_master: simple-audio-card,cpu {
++                sound-dai = <&i2s>;
++            };
++
++            simple-audio-card,codec {
++                sound-dai = <&tlv320aic32x4>;
++            };
++        };
++    };
++
++    fragment@4 {
++        target = <&gpio>;
++        __overlay__ {
++            gpclk0_pin: gpclk0_pin {
++                brcm,pins = <4>;
++                brcm,function = <4>;
++            };
++
++            aic3204_reset: aic3204_reset {
++                brcm,pins = <13>;
++                brcm,function = <1>;
++                brcm,pull = <1>;
++            };
++
++            aic3204_gpio: aic3204_gpio {
++                brcm,pins = <26>;
++            };
++        };
++    };
++
++    __overrides__ {
++        alsaname = <&snd>, "simple-audio-card,name";
++    };
++};
+diff --git a/arch/arm/boot/dts/overlays/ugreen-dabboard-overlay.dts b/arch/arm/boot/dts/overlays/ugreen-dabboard-overlay.dts
+new file mode 100644
+index 000000000000..fc8d9b118068
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ugreen-dabboard-overlay.dts
+@@ -0,0 +1,49 @@
++// Definitions for the ugreen dabboard I2S
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			dmic_codec: dmic-codec {
++				#sound-dai-cells = <0>;
++				compatible = "dmic-codec";
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		sound_overlay: __overlay__ {
++			compatible = "simple-audio-card";
++			simple-audio-card,format = "i2s";
++			simple-audio-card,name = "dabboard";
++			simple-audio-card,bitclock-master = <&dailink0_slave>;
++			simple-audio-card,frame-master = <&dailink0_slave>;
++			simple-audio-card,widgets = "Microphone", "Microphone Jack";
++			status = "okay";
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++			};
++			dailink0_slave: simple-audio-card,codec {
++				#sound-dai-cells = <0>;
++				sound-dai = <&dmic_codec>;
++			};
++		};
++	};
++
++	__overrides__ {
++		card-name = <&sound_overlay>,"simple-audio-card,name";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/upstream-overlay.dts b/arch/arm/boot/dts/overlays/upstream-overlay.dts
+new file mode 100644
+index 000000000000..7c4071a7cb27
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/upstream-overlay.dts
+@@ -0,0 +1,101 @@
++// redo: ovmerge -c vc4-kms-v3d-overlay.dts,cma-default dwc2-overlay.dts,dr_mode=otg
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++	fragment@0 {
++		target = <&i2c2>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@1 {
++		target = <&fb>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@2 {
++		target = <&pixelvalve0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@3 {
++		target = <&pixelvalve1>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@4 {
++		target = <&pixelvalve2>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@5 {
++		target = <&hvs>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@6 {
++		target = <&hdmi>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@7 {
++		target = <&v3d>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@8 {
++		target = <&vc4>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@9 {
++		target = <&clocks>;
++		__overlay__ {
++			claim-clocks = <BCM2835_PLLD_DSI0 BCM2835_PLLD_DSI1 BCM2835_PLLH_AUX BCM2835_PLLH_PIX>;
++		};
++	};
++	fragment@10 {
++		target = <&vec>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@11 {
++		target = <&txp>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@12 {
++		target = <&audio>;
++		__overlay__ {
++			brcm,disable-hdmi;
++		};
++	};
++	fragment@13 {
++		target = <&usb>;
++		#address-cells = <1>;
++		#size-cells = <1>;
++		__overlay__ {
++			compatible = "brcm,bcm2835-usb";
++			dr_mode = "otg";
++			g-np-tx-fifo-size = <32>;
++			g-rx-fifo-size = <558>;
++			g-tx-fifo-size = <512 512 512 512 512 256 256>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/upstream-pi4-overlay.dts b/arch/arm/boot/dts/overlays/upstream-pi4-overlay.dts
+new file mode 100644
+index 000000000000..f4328634542e
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/upstream-pi4-overlay.dts
+@@ -0,0 +1,137 @@
++// redo: ovmerge -c vc4-kms-v3d-pi4-overlay.dts,cma-default dwc2-overlay.dts,dr_mode=otg
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2711";
++	fragment@0 {
++		target = <&ddc0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@1 {
++		target = <&ddc1>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@2 {
++		target = <&hdmi0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@3 {
++		target = <&hdmi1>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@4 {
++		target = <&hvs>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@5 {
++		target = <&pixelvalve0>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@6 {
++		target = <&pixelvalve1>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@7 {
++		target = <&pixelvalve2>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@8 {
++		target = <&pixelvalve3>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@9 {
++		target = <&pixelvalve4>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@10 {
++		target = <&v3d>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@11 {
++		target = <&vc4>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@12 {
++		target = <&txp>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@13 {
++		target = <&fb>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@14 {
++		target = <&firmwarekms>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@15 {
++		target = <&vec>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@16 {
++		target = <&audio>;
++		__overlay__ {
++			brcm,disable-hdmi;
++		};
++	};
++	fragment@17 {
++		target = <&dvp>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@18 {
++		target = <&aon_intr>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@19 {
++		target = <&usb>;
++		#address-cells = <1>;
++		#size-cells = <1>;
++		__overlay__ {
++			compatible = "brcm,bcm2835-usb";
++			dr_mode = "otg";
++			g-np-tx-fifo-size = <32>;
++			g-rx-fifo-size = <558>;
++			g-tx-fifo-size = <512 512 512 512 512 256 256>;
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-fkms-v3d-overlay.dts b/arch/arm/boot/dts/overlays/vc4-fkms-v3d-overlay.dts
+new file mode 100644
+index 000000000000..ca344492bed8
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-fkms-v3d-overlay.dts
+@@ -0,0 +1,40 @@
++/*
++ * vc4-fkms-v3d-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "cma-overlay.dts"
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@1 {
++		target = <&fb>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&firmwarekms>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&v3d>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&vc4>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-fkms-v3d-pi4-overlay.dts b/arch/arm/boot/dts/overlays/vc4-fkms-v3d-pi4-overlay.dts
+new file mode 100644
+index 000000000000..7792ead0cbb3
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-fkms-v3d-pi4-overlay.dts
+@@ -0,0 +1,44 @@
++/*
++ * vc4-fkms-v3d-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "cma-overlay.dts"
++
++&frag0 {
++	size = <((320-4)*1024*1024)>;
++};
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@1 {
++		target = <&fb>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&firmwarekms>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&v3d>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&vc4>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
+new file mode 100644
+index 000000000000..f7181c9828bf
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
+@@ -0,0 +1,44 @@
++/*
++ * vc4-kms-dpi-at056tn53v1-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			panel: panel {
++				compatible = "innolux,at056tn53v1", "simple-panel";
++
++				port {
++					panel_in: endpoint {
++						remote-endpoint = <&dpi_out>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&dpi>;
++		__overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
++
++			port {
++				dpi_out: endpoint {
++					remote-endpoint = <&panel_in>;
++				};
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
+new file mode 100644
+index 000000000000..ecd3bef3d65a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
+@@ -0,0 +1,118 @@
++/*
++ * Device Tree overlay for RaspberryPi 7" Touchscreen panel
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "edt-ft5406.dtsi"
++
++/ {
++	/* No compatible as it will have come from edt-ft5406.dtsi */
++
++	fragment@0 {
++		target = <&dsi1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++			port {
++				dsi_out: endpoint {
++					remote-endpoint = <&bridge_in>;
++				};
++			};
++			bridge@0 {
++				reg = <0>;
++				compatible = "toshiba,tc358762";
++				vddc-supply = <&reg_bridge>;
++				ports {
++					#address-cells = <1>;
++					#size-cells = <0>;
++
++					port@0 {
++						reg = <0>;
++						bridge_in: endpoint {
++							remote-endpoint = <&dsi_out>;
++						};
++					};
++
++					port@1 {
++						reg = <1>;
++						bridge_out: endpoint {
++							remote-endpoint = <&panel_in>;
++						};
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			panel_disp1: panel_disp1@0 {
++				reg = <0>;
++				compatible = "raspberrypi,7inch-dsi", "simple-panel";
++				backlight = <&reg_display>;
++				power-supply = <&reg_display>;
++
++				port {
++					panel_in: endpoint {
++						remote-endpoint = <&bridge_out>;
++					};
++				};
++			};
++
++			reg_bridge: reg_bridge@0 {
++				reg = <0>;
++				compatible = "regulator-fixed";
++				regulator-name = "bridge_reg";
++				gpio = <&reg_display 0 0>;
++				vin-supply = <&reg_display>;
++				enable-active-high;
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			reg_display: reg_display@45 {
++				compatible = "raspberrypi,7inch-touchscreen-panel-regulator";
++				reg = <0x45>;
++				gpio-controller;
++				#gpio-cells = <2>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@5 {
++		target = <&ft5406>;
++		__overlay__ {
++			vcc-supply = <&reg_display>;
++			reset-gpio = <&reg_display 1 1>;
++		};
++	};
++
++	__overrides__ {
++		disable_touch = <0>, "-10-11-12-13";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-overlay.dts
+new file mode 100644
+index 000000000000..d7b8f6713804
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-overlay.dts
+@@ -0,0 +1,69 @@
++/*
++ * Device Tree overlay to connect a JDI LT070ME05000 DSI panel to DSI1.
++ * This uses 4 DSI data lanes, so can only be used with a Compute Module.
++ *
++ * Credit to forum user gizmomouse on
++ * https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=253912 and
++ * Andrey Vostrukhin of Harlab for the overlay.
++ *
++ * Refer to https://github.com/harlab/CM4_LCD_LT070ME05000 for schematics and
++ * other documentation.
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&dsi1>;
++		__overlay__{
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			port {
++				dsi_out_port:endpoint {
++					remote-endpoint = <&panel_dsi_port>;
++				};
++			};
++
++			lt070me05000:lt070me05000@0 {
++				compatible    = "jdi,lt070me05000";
++				status        = "okay";
++				reg           = <0>;
++				reset-gpios   = <&gpio 17 1>;   // LCD RST
++				enable-gpios  = <&gpio 4 0>;    // LCD Enable
++				dcdc-en-gpios = <&gpio 5 0>;    // LCD DC-DC Enable
++				port {
++					panel_dsi_port: endpoint {
++						remote-endpoint = <&dsi_out_port>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			lt070me05000_pins: lt070me05000_pins {
++				brcm,pins = <4 5 17>;
++				brcm,function = <1 1 1>; // out
++				brcm,pull = <0 0 0>; // off
++			};
++		};
++
++	};
++
++	__overrides__ {
++		reset = <&lt070me05000_pins>,"brcm,pins:8",
++			<&lt070me05000>,"reset-gpios:4";
++
++		enable = <&lt070me05000_pins>,"brcm,pins:0",
++			<&lt070me05000>,"enable-gpios:4";
++
++		dcdc-en = <&lt070me05000_pins>,"brcm,pins:4",
++			<&lt070me05000>,"dcdc-en-gpios:4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-v2-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-v2-overlay.dts
+new file mode 100644
+index 000000000000..5dcd0f2243e2
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-lt070me05000-v2-overlay.dts
+@@ -0,0 +1,64 @@
++/*
++ * Device Tree overlay to connect a JDI LT070ME05000 DSI panel to DSI1.
++ * This uses 4 DSI data lanes, so can only be used with a Compute Module.
++ *
++ * The overlay is for V2 of Harlab's interface board that uses a PCA9536 to
++ * handle the panel's control GPIOs instead of wiring it back to Pi GPIOs.
++ *
++ * Credit to Andrey Vostrukhin of Harlab for the overlay.
++ *
++ * Refer to https://github.com/harlab/CM4_LCD_LT070ME05000 for schematics and
++ * other documentation.
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			pca: pca@41 {
++				compatible = "nxp,pca9536";
++				reg = <0x41>;
++				gpio-controller;
++				#gpio-cells = <2>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&dsi1>;
++		__overlay__{
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			port {
++				dsi_out_port:endpoint {
++					remote-endpoint = <&panel_dsi_port>;
++				};
++			};
++
++			lt070me05000:lt070me05000@0 {
++				compatible    = "jdi,lt070me05000";
++				status        = "okay";
++				reg           = <0>;
++				reset-gpios   = <&pca 0 1>;
++				enable-gpios  = <&pca 2 0>;
++				dcdc-en-gpios = <&pca 1 0>;
++				port {
++					panel_dsi_port: endpoint {
++						remote-endpoint = <&dsi_out_port>;
++					};
++				};
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts
+new file mode 100644
+index 000000000000..b03394844abd
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts
+@@ -0,0 +1,43 @@
++/*
++ * vc4-kms-v3d-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			panel: panel {
++				compatible = "ontat,yx700wv03", "simple-panel";
++
++				port {
++					panel_in: endpoint {
++						remote-endpoint = <&dpi_out>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&dpi>;
++		__overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_gpio0>;
++
++			port {
++				dpi_out: endpoint@0 {
++					remote-endpoint = <&panel_in>;
++				};
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+new file mode 100644
+index 000000000000..5a4efdeed663
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+@@ -0,0 +1,123 @@
++/*
++ * vc4-kms-v3d-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++#include "cma-overlay.dts"
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@1 {
++		target = <&i2c2>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&fb>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&pixelvalve0>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&pixelvalve1>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&pixelvalve2>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@6 {
++		target = <&hvs>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@7 {
++		target = <&hdmi>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@8 {
++		target = <&v3d>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@9 {
++		target = <&vc4>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@10 {
++		target = <&clocks>;
++		__overlay__  {
++			claim-clocks = <
++				BCM2835_PLLD_DSI0
++				BCM2835_PLLD_DSI1
++				BCM2835_PLLH_AUX
++				BCM2835_PLLH_PIX
++			>;
++		};
++	};
++
++	fragment@11 {
++		target = <&vec>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@12 {
++		target = <&txp>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@13 {
++		target = <&hdmi>;
++		__dormant__  {
++			dmas;
++		};
++	};
++
++	fragment@14 {
++		target = <&audio>;
++		__overlay__  {
++		    brcm,disable-hdmi;
++		};
++	};
++
++	__overrides__ {
++		audio   = <0>,"!13", <0>,"=14";
++		noaudio = <0>,"=13", <0>,"!14";
++		nocomposite = <0>, "!11";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
+new file mode 100644
+index 000000000000..4285e12a4e53
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
+@@ -0,0 +1,197 @@
++/*
++ * vc4-kms-v3d-pi4-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++#include "cma-overlay.dts"
++
++&frag0 {
++	size = <((320-4)*1024*1024)>;
++};
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@1 {
++		target = <&ddc0>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&ddc1>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&hdmi0>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&hdmi1>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&hvs>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@6 {
++		target = <&pixelvalve0>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@7 {
++		target = <&pixelvalve1>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@8 {
++		target = <&pixelvalve2>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@9 {
++		target = <&pixelvalve3>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@10 {
++		target = <&pixelvalve4>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@11 {
++		target = <&v3d>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@12 {
++		target = <&vc4>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@13 {
++		target = <&txp>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@14 {
++		target = <&fb>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@15 {
++		target = <&firmwarekms>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@16 {
++		target = <&vec>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@17 {
++		target = <&hdmi0>;
++		__dormant__  {
++			dmas;
++		};
++	};
++
++	fragment@18 {
++		target = <&hdmi1>;
++		__dormant__  {
++			dmas;
++		};
++	};
++
++	fragment@19 {
++		target = <&audio>;
++		__overlay__  {
++		    brcm,disable-hdmi;
++		};
++	};
++
++	fragment@20 {
++		target = <&dvp>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@21 {
++		target = <&pixelvalve3>;
++		__dormant__  {
++			status = "okay";
++		};
++	};
++
++	fragment@22 {
++		target = <&vec>;
++		__dormant__  {
++			status = "okay";
++		};
++	};
++
++	fragment@23 {
++		target = <&aon_intr>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		audio   = <0>,"!17";
++		audio1   = <0>,"!18";
++		noaudio = <0>,"=17", <0>,"=18", <0>,"!19";
++		composite = <0>, "!1",
++			    <0>, "!2",
++			    <0>, "!3",
++			    <0>, "!4",
++			    <0>, "!6",
++			    <0>, "!7",
++			    <0>, "!8",
++			    <0>, "!9",
++			    <0>, "!10",
++			    <0>, "!16",
++			    <0>, "=21",
++			    <0>, "=22";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vc4-kms-vga666-overlay.dts b/arch/arm/boot/dts/overlays/vc4-kms-vga666-overlay.dts
+new file mode 100644
+index 000000000000..6e787099e861
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-vga666-overlay.dts
+@@ -0,0 +1,100 @@
++/*
++ * vc4-kms-vga666-overlay.dts
++ * Configures a FenLogic or similar VGA666 DPI adapter when using the
++ * vc4-kms-v3d driver.
++ * If a suitable I2C level shifter is connected to GPIOs 0&1 and the VGA
++ * ID1/SDA (pin 12) and ID3/SCL (pin 15) lines, then there is the option to
++ * enable reading the EDID from the display.
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			vga_connector: vga_connector {
++				compatible = "vga-connector";
++				label = "vga";
++
++				port {
++					vga_con_in: endpoint {
++						remote-endpoint = <&vga666_out>;
++					};
++				};
++			};
++
++			vga_dac {
++				compatible = "dumb-vga-dac";
++
++				ports {
++					#address-cells = <1>;
++					#size-cells = <0>;
++
++					port@0 {
++						reg = <0>;
++
++						vga666_in: endpoint {
++							remote-endpoint = <&dpi_out>;
++						};
++					};
++
++					port@1 {
++						reg = <1>;
++
++						vga666_out: endpoint {
++							remote-endpoint = <&vga_con_in>;
++						};
++					};
++				};
++			};
++
++		};
++	};
++
++	fragment@1 {
++		target = <&dpi>;
++		__overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_gpio2>;
++
++			port {
++				dpi_out: endpoint@0 {
++					remote-endpoint = <&vga666_in>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&vga_connector>;
++		__dormant__  {
++			ddc-i2c-bus = <&i2c_vc>;
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c0if>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		ddc = <0>,"=2", <0>,"=3", <0>,"=4";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/vga666-overlay.dts b/arch/arm/boot/dts/overlays/vga666-overlay.dts
+new file mode 100644
+index 000000000000..a4968d180a5d
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vga666-overlay.dts
+@@ -0,0 +1,30 @@
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	// There is no VGA driver module, but we need a platform device
++	// node (that doesn't already use pinctrl) to hang the pinctrl
++	// reference on - leds will do
++
++	fragment@0 {
++		target = <&leds>;
++		__overlay__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&vga666_pins>;
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			vga666_pins: vga666_pins {
++				brcm,pins = <2 3 4 5 6 7 8 9 10 11 12
++					     13 14 15 16 17 18 19 20 21>;
++				brcm,function = <6>; /* alt2 */
++				brcm,pull = <0>; /* no pull */
++			};
++		};
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts b/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
+new file mode 100644
+index 000000000000..f44e325bc1f2
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
+@@ -0,0 +1,40 @@
++// Definitions for w1-gpio module (without external pullup)
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++
++			w1: onewire@0 {
++				compatible = "w1-gpio";
++				pinctrl-names = "default";
++				pinctrl-0 = <&w1_pins>;
++				gpios = <&gpio 4 0>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			w1_pins: w1_pins@0 {
++				brcm,pins = <4>;
++				brcm,function = <0>; // in (initially)
++				brcm,pull = <0>; // off
++			};
++		};
++	};
++
++	__overrides__ {
++		gpiopin =       <&w1>,"gpios:4",
++				<&w1>,"reg:0",
++				<&w1_pins>,"brcm,pins:0",
++				<&w1_pins>,"reg:0";
++		pullup;		// Silently ignore unneeded parameter
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts b/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
+new file mode 100644
+index 000000000000..953c6a1aeab9
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
+@@ -0,0 +1,42 @@
++// Definitions for w1-gpio module (with external pullup)
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++
++			w1: onewire@0 {
++				compatible = "w1-gpio";
++				pinctrl-names = "default";
++				pinctrl-0 = <&w1_pins>;
++				gpios = <&gpio 4 0>, <&gpio 5 1>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			w1_pins: w1_pins@0 {
++				brcm,pins = <4 5>;
++				brcm,function = <0 1>; // in out
++				brcm,pull = <0 0>; // off off
++			};
++		};
++	};
++
++	__overrides__ {
++		gpiopin =       <&w1>,"gpios:4",
++				<&w1>,"reg:0",
++				<&w1_pins>,"brcm,pins:0",
++				<&w1_pins>,"reg:0";
++		extpullup =     <&w1>,"gpios:16",
++				<&w1_pins>,"brcm,pins:4";
++		pullup;		// Silently ignore unneeded parameter
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/w5500-overlay.dts b/arch/arm/boot/dts/overlays/w5500-overlay.dts
+new file mode 100644
+index 000000000000..4d3e66296753
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/w5500-overlay.dts
+@@ -0,0 +1,63 @@
++// Overlay for the Wiznet w5500 Ethernet Controller
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			eth1: w5500@0{
++				compatible = "wiznet,w5500";
++				reg = <0>; /* CE0 */
++				pinctrl-names = "default";
++				pinctrl-0 = <&eth1_pins>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 0x8>;
++				spi-max-frequency = <30000000>;
++//				local-mac-address = [aa bb cc dd ee ff];
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&gpio>;
++		__overlay__ {
++			eth1_pins: eth1_pins {
++				brcm,pins = <25>;
++				brcm,function = <0>; /* in */
++				brcm,pull = <0>; /* none */
++			};
++		};
++	};
++
++	__overrides__ {
++		int_pin = <&eth1>, "interrupts:0",
++		          <&eth1_pins>, "brcm,pins:0";
++		speed   = <&eth1>, "spi-max-frequency:0";
++		cs      = <&eth1>, "reg:0",
++			  <0>, "!0=1";
++	};
++};
+diff --git a/arch/arm/boot/dts/overlays/wittypi-overlay.dts b/arch/arm/boot/dts/overlays/wittypi-overlay.dts
+new file mode 100644
+index 000000000000..71ce806186de
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/wittypi-overlay.dts
+@@ -0,0 +1,44 @@
++/*
++ * Device Tree overlay for Witty Pi extension board by UUGear
++ *
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&leds>;
++		__overlay__ {
++			compatible = "gpio-leds";
++			wittypi_led: wittypi_led {
++				label = "wittypi_led";
++				linux,default-trigger = "default-on";
++				gpios = <&gpio 17 0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			rtc: ds1337@68 {
++				compatible = "dallas,ds1337";
++				reg = <0x68>;
++				wakeup-source;
++			};
++		};
++	};
++
++	__overrides__ {
++		led_gpio =	<&wittypi_led>,"gpios:4";
++		led_trigger =	<&wittypi_led>,"linux,default-trigger";
++	};
++
++};
+diff --git a/arch/arm/boot/dts/overlays/wm8960-soundcard-overlay.dts b/arch/arm/boot/dts/overlays/wm8960-soundcard-overlay.dts
+new file mode 100644
+index 000000000000..289fa4dacdf1
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/wm8960-soundcard-overlay.dts
+@@ -0,0 +1,82 @@
++// Definitions for Waveshare WM8960 https://github.com/waveshare/WM8960-Audio-HAT
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path="/";
++		__overlay__ {
++			wm8960_mclk: wm8960_mclk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <12288000>;
++			};
++		};
++	};
++	fragment@2 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			wm8960: wm8960 {
++				compatible = "wlf,wm8960";
++				reg = <0x1a>;
++				#sound-dai-cells = <0>;
++				AVDD-supply = <&vdd_5v0_reg>;
++				DVDD-supply = <&vdd_3v3_reg>;
++			};
++		};
++	};
++
++
++	fragment@3 {
++		target = <&sound>;
++		slave_overlay: __overlay__ {
++			compatible = "simple-audio-card";
++			simple-audio-card,format = "i2s";
++			simple-audio-card,name = "wm8960-soundcard"; 
++			status = "okay";
++
++			simple-audio-card,widgets =
++				"Microphone", "Mic Jack",
++				"Line", "Line In",
++				"Line", "Line Out",
++				"Speaker", "Speaker",
++				"Headphone", "Headphone Jack";
++			simple-audio-card,routing =
++				"Headphone Jack", "HP_L",
++				"Headphone Jack", "HP_R",
++				"Speaker", "SPK_LP",
++				"Speaker", "SPK_LN",
++				"LINPUT1", "Mic Jack",
++				"LINPUT3", "Mic Jack",
++				"RINPUT1", "Mic Jack",
++				"RINPUT2", "Mic Jack";
++
++			simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++			};
++			dailink0_slave: simple-audio-card,codec {
++				sound-dai = <&wm8960>;
++				clocks = <&wm8960_mclk>;
++				clock-names = "mclk";
++			};
++		};
++	};
++
++	__overrides__ {
++		alsaname = <&slave_overlay>,"simple-audio-card,name";
++		compatible = <&wm8960>,"compatible";
++	};
++};
+diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
+index 639e01a4d855..becca30ad4fe 100644
+--- a/arch/arm64/boot/dts/Makefile
++++ b/arch/arm64/boot/dts/Makefile
+@@ -30,3 +30,5 @@ subdir-y += synaptics
+ subdir-y += ti
+ subdir-y += toshiba
+ subdir-y += xilinx
++
++subdir-y += overlays
+diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
+index 11eae3e3a944..5a90727064ee 100644
+--- a/arch/arm64/boot/dts/broadcom/Makefile
++++ b/arch/arm64/boot/dts/broadcom/Makefile
+@@ -5,7 +5,19 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb \
+ 			      bcm2837-rpi-3-b.dtb \
+ 			      bcm2837-rpi-3-b-plus.dtb \
+ 			      bcm2837-rpi-cm3-io3.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-2-b.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b-plus.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-4-b.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-cm3.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-cm4.dtb
+ 
+ subdir-y	+= bcm4908
+ subdir-y	+= northstar2
+ subdir-y	+= stingray
++
++# Enable fixups to support overlays on BCM2835 platforms
++ifeq ($(CONFIG_ARCH_BCM2835),y)
++	DTC_FLAGS += -@
++endif
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2710-rpi-2-b.dts b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-2-b.dts
+new file mode 100644
+index 000000000000..36ecea71f0ef
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-2-b.dts
+@@ -0,0 +1 @@
++#include "../../../../arm/boot/dts/bcm2710-rpi-2-b.dts"
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b-plus.dts b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b-plus.dts
+new file mode 100644
+index 000000000000..22fc6a82f2a9
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b-plus.dts
+@@ -0,0 +1 @@
++#include "../../../../arm/boot/dts/bcm2710-rpi-3-b-plus.dts"
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b.dts b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b.dts
+new file mode 100644
+index 000000000000..4cacc5b72ae3
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-3-b.dts
+@@ -0,0 +1 @@
++#include "../../../../arm/boot/dts/bcm2710-rpi-3-b.dts"
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2710-rpi-cm3.dts b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-cm3.dts
+new file mode 100644
+index 000000000000..e1e13784cff6
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-cm3.dts
+@@ -0,0 +1 @@
++#include "../../../../arm/boot/dts/bcm2710-rpi-cm3.dts"
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2711-rpi-4-b.dts b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-4-b.dts
+index d24c53682e44..bf69a4b0b172 100644
+--- a/arch/arm64/boot/dts/broadcom/bcm2711-rpi-4-b.dts
++++ b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-4-b.dts
+@@ -1,2 +1 @@
+-// SPDX-License-Identifier: GPL-2.0
+-#include "arm/bcm2711-rpi-4-b.dts"
++#include "../../../../arm/boot/dts/bcm2711-rpi-4-b.dts"
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2711-rpi-400.dts b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-400.dts
+index b9000f58beb5..90c2b5a195d4 100644
+--- a/arch/arm64/boot/dts/broadcom/bcm2711-rpi-400.dts
++++ b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-400.dts
+@@ -1,2 +1 @@
+-// SPDX-License-Identifier: GPL-2.0
+-#include "arm/bcm2711-rpi-400.dts"
++#include "../../../../arm/boot/dts/bcm2711-rpi-400.dts"
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4.dts b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4.dts
+new file mode 100644
+index 000000000000..8064a58155f1
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4.dts
+@@ -0,0 +1 @@
++#include "../../../../arm/boot/dts/bcm2711-rpi-cm4.dts"
+diff --git a/arch/arm64/boot/dts/broadcom/bcm283x-rpi-csi1-2lane.dtsi b/arch/arm64/boot/dts/broadcom/bcm283x-rpi-csi1-2lane.dtsi
+new file mode 120000
+index 000000000000..e5c400284467
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm283x-rpi-csi1-2lane.dtsi
+@@ -0,0 +1 @@
++../../../../arm/boot/dts/bcm283x-rpi-csi1-2lane.dtsi
+\ No newline at end of file
+diff --git a/arch/arm64/boot/dts/broadcom/bcm283x-rpi-lan7515.dtsi b/arch/arm64/boot/dts/broadcom/bcm283x-rpi-lan7515.dtsi
+new file mode 120000
+index 000000000000..fc4c05bbe7fd
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm283x-rpi-lan7515.dtsi
+@@ -0,0 +1 @@
++../../../../arm/boot/dts/bcm283x-rpi-lan7515.dtsi
+\ No newline at end of file
+diff --git a/arch/arm64/boot/dts/overlays b/arch/arm64/boot/dts/overlays
+new file mode 120000
+index 000000000000..ded08646b6f6
+--- /dev/null
++++ b/arch/arm64/boot/dts/overlays
+@@ -0,0 +1 @@
++../../../arm/boot/dts/overlays
+\ No newline at end of file
+diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
+index 190d781e84f4..84c46c081218 100644
+--- a/scripts/Makefile.dtbinst
++++ b/scripts/Makefile.dtbinst
+@@ -18,9 +18,10 @@ include $(srctree)/scripts/Kbuild.include
+ include $(src)/Makefile
+ 
+ dtbs    := $(addprefix $(dst)/, $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS),$(dtb-)))
++dtbos   := $(addprefix $(dst)/, $(dtbo-y) $(if $(CONFIG_OF_ALL_DTBS),$(dtb-)))
+ subdirs := $(addprefix $(obj)/, $(subdir-y) $(subdir-m))
+ 
+-__dtbs_install: $(dtbs) $(subdirs)
++__dtbs_install: $(dtbs) $(dtbos) $(subdirs)
+ 	@:
+ 
+ quiet_cmd_dtb_install = INSTALL $@
+diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
+index 0a8a4689c3eb..dff7d1ef5ff4 100644
+--- a/scripts/Makefile.lib
++++ b/scripts/Makefile.lib
+@@ -300,6 +300,7 @@ DTC_FLAGS += -Wno-interrupt_provider
+ ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
+ DTC_FLAGS += -Wno-unit_address_vs_reg \
+ 	-Wno-unit_address_format \
++	-Wno-gpios_property \
+ 	-Wno-avoid_unnecessary_addr_size \
+ 	-Wno-alias_paths \
+ 	-Wno-graph_child_address \
+@@ -373,6 +374,18 @@ endef
+ $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
+ 	$(call if_changed_rule,dtc)
+ 
++quiet_cmd_dtco = DTCO    $@
++cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
++	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
++	$(DTC) -@ -H epapr -O dtb -o $@ -b 0 \
++		-i $(dir $<) $(DTC_FLAGS) \
++		-Wno-interrupts_property \
++		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
++	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
++
++$(obj)/%.dtbo: $(src)/%-overlay.dts FORCE
++	$(call if_changed_dep,dtco)
++
+ dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
+ 
+ # Bzip2
+-- 
+2.30.2
+
diff --git a/target/linux/bcm27xx/patches-5.15/950-0079-leds-Add-the-input-trigger-for-pwr_led.patch b/target/linux/bcm27xx/patches-5.15/950-0079-leds-Add-the-input-trigger-for-pwr_led.patch
new file mode 100644
index 0000000000..cc1202059c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0079-leds-Add-the-input-trigger-for-pwr_led.patch
@@ -0,0 +1,168 @@
+From 8a9552813613d4f2d57e7ef97e4e43279603bf85 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 6 Feb 2015 13:50:57 +0000
+Subject: [PATCH] leds: Add the "input" trigger, for pwr_led
+
+The "input" trigger makes the associated GPIO an input.  This is to support
+the Raspberry Pi PWR LED, which is driven by external hardware in normal use.
+
+N.B. pwr_led is not available on Model A or B boards.
+
+leds-gpio: Implement the brightness_get method
+
+The power LED uses some clever logic that means it is driven
+by a voltage measuring circuit when configured as input, otherwise
+it is driven by the GPIO output value. This patch wires up the
+brightness_get method for leds-gpio so that user-space can monitor
+the LED value via /sys/class/gpio/led1/brightness. Using the input
+trigger this returns an indication of the system power health,
+otherwise it is just whatever value the trigger has written most
+recently.
+
+See: https://github.com/raspberrypi/linux/issues/1064
+---
+ drivers/leds/leds-gpio.c             | 17 ++++++++-
+ drivers/leds/trigger/Kconfig         |  7 ++++
+ drivers/leds/trigger/Makefile        |  1 +
+ drivers/leds/trigger/ledtrig-input.c | 55 ++++++++++++++++++++++++++++
+ include/linux/leds.h                 |  3 ++
+ 5 files changed, 82 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/leds/trigger/ledtrig-input.c
+
+--- a/drivers/leds/leds-gpio.c
++++ b/drivers/leds/leds-gpio.c
+@@ -47,8 +47,15 @@ static void gpio_led_set(struct led_clas
+ 		led_dat->platform_gpio_blink_set(led_dat->gpiod, level,
+ 						 NULL, NULL);
+ 		led_dat->blinking = 0;
++	} else if (led_dat->cdev.flags & SET_GPIO_INPUT) {
++		gpiod_direction_input(led_dat->gpiod);
++		led_dat->cdev.flags &= ~SET_GPIO_INPUT;
++	} else if (led_dat->cdev.flags & SET_GPIO_OUTPUT) {
++		gpiod_direction_output(led_dat->gpiod, level);
++		led_dat->cdev.flags &= ~SET_GPIO_OUTPUT;
+ 	} else {
+-		if (led_dat->can_sleep)
++		if (led_dat->can_sleep ||
++			(led_dat->cdev.flags & (SET_GPIO_INPUT | SET_GPIO_OUTPUT) ))
+ 			gpiod_set_value_cansleep(led_dat->gpiod, level);
+ 		else
+ 			gpiod_set_value(led_dat->gpiod, level);
+@@ -62,6 +69,13 @@ static int gpio_led_set_blocking(struct
+ 	return 0;
+ }
+ 
++static enum led_brightness gpio_led_get(struct led_classdev *led_cdev)
++{
++	struct gpio_led_data *led_dat =
++		container_of(led_cdev, struct gpio_led_data, cdev);
++	return gpiod_get_value_cansleep(led_dat->gpiod) ? LED_FULL : LED_OFF;
++}
++
+ static int gpio_blink_set(struct led_classdev *led_cdev,
+ 	unsigned long *delay_on, unsigned long *delay_off)
+ {
+@@ -90,6 +104,7 @@ static int create_gpio_led(const struct
+ 		led_dat->platform_gpio_blink_set = blink_set;
+ 		led_dat->cdev.blink_set = gpio_blink_set;
+ 	}
++	led_dat->cdev.brightness_get = gpio_led_get;
+ 	if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {
+ 		state = gpiod_get_value_cansleep(led_dat->gpiod);
+ 		if (state < 0)
+--- a/drivers/leds/trigger/Kconfig
++++ b/drivers/leds/trigger/Kconfig
+@@ -114,6 +114,13 @@ config LEDS_TRIGGER_CAMERA
+ 	  This enables direct flash/torch on/off by the driver, kernel space.
+ 	  If unsure, say Y.
+ 
++config LEDS_TRIGGER_INPUT
++	tristate "LED Input Trigger"
++	depends on LEDS_TRIGGERS
++	help
++	  This allows the GPIOs assigned to be LEDs to be initialised to inputs.
++	  If unsure, say Y.
++
+ config LEDS_TRIGGER_PANIC
+ 	bool "LED Panic Trigger"
+ 	help
+--- a/drivers/leds/trigger/Makefile
++++ b/drivers/leds/trigger/Makefile
+@@ -11,6 +11,7 @@ obj-$(CONFIG_LEDS_TRIGGER_ACTIVITY)	+= l
+ obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON)	+= ledtrig-default-on.o
+ obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT)	+= ledtrig-transient.o
+ obj-$(CONFIG_LEDS_TRIGGER_CAMERA)	+= ledtrig-camera.o
++obj-$(CONFIG_LEDS_TRIGGER_INPUT)	+= ledtrig-input.o
+ obj-$(CONFIG_LEDS_TRIGGER_PANIC)	+= ledtrig-panic.o
+ obj-$(CONFIG_LEDS_TRIGGER_NETDEV)	+= ledtrig-netdev.o
+ obj-$(CONFIG_LEDS_TRIGGER_PATTERN)	+= ledtrig-pattern.o
+--- /dev/null
++++ b/drivers/leds/trigger/ledtrig-input.c
+@@ -0,0 +1,55 @@
++/*
++ * Set LED GPIO to Input "Trigger"
++ *
++ * Copyright 2015 Phil Elwell <phil@raspberrypi.org>
++ *
++ * Based on Nick Forbes's ledtrig-default-on.c.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/leds.h>
++#include <linux/gpio.h>
++#include "../leds.h"
++
++static int input_trig_activate(struct led_classdev *led_cdev)
++{
++	led_cdev->flags |= SET_GPIO_INPUT;
++	led_set_brightness(led_cdev, 0);
++	return 0;
++}
++
++static void input_trig_deactivate(struct led_classdev *led_cdev)
++{
++	led_cdev->flags |= SET_GPIO_OUTPUT;
++	led_set_brightness(led_cdev, 0);
++}
++
++static struct led_trigger input_led_trigger = {
++	.name     = "input",
++	.activate = input_trig_activate,
++	.deactivate = input_trig_deactivate,
++};
++
++static int __init input_trig_init(void)
++{
++	return led_trigger_register(&input_led_trigger);
++}
++
++static void __exit input_trig_exit(void)
++{
++	led_trigger_unregister(&input_led_trigger);
++}
++
++module_init(input_trig_init);
++module_exit(input_trig_exit);
++
++MODULE_AUTHOR("Phil Elwell <phil@raspberrypi.org>");
++MODULE_DESCRIPTION("Set LED GPIO to Input \"trigger\"");
++MODULE_LICENSE("GPL");
+--- a/include/linux/leds.h
++++ b/include/linux/leds.h
+@@ -85,6 +85,9 @@ struct led_classdev {
+ #define LED_BRIGHT_HW_CHANGED	BIT(21)
+ #define LED_RETAIN_AT_SHUTDOWN	BIT(22)
+ #define LED_INIT_DEFAULT_TRIGGER BIT(23)
++	/* Additions for Raspberry Pi PWR LED */
++#define SET_GPIO_INPUT		BIT(30)
++#define SET_GPIO_OUTPUT		BIT(31)
+ 
+ 	/* set_brightness_work / blink_timer flags, atomic, private. */
+ 	unsigned long		work_flags;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0080-Added-Device-IDs-for-August-DVB-T-205.patch b/target/linux/bcm27xx/patches-5.15/950-0080-Added-Device-IDs-for-August-DVB-T-205.patch
new file mode 100644
index 0000000000..b42e6423fd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0080-Added-Device-IDs-for-August-DVB-T-205.patch
@@ -0,0 +1,22 @@
+From d3697c0d2d862e7e6c974b74eb84018387556233 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 3 Jul 2013 00:54:08 +0100
+Subject: [PATCH] Added Device IDs for August DVB-T 205
+
+---
+ drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
++++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
+@@ -1944,6 +1944,10 @@ static const struct usb_device_id rtl28x
+ 		&rtl28xxu_props, "Compro VideoMate U650F", NULL) },
+ 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd394,
+ 		&rtl28xxu_props, "MaxMedia HU394-T", NULL) },
++	{ DVB_USB_DEVICE(USB_VID_GTEK, 0xb803 /*USB_PID_AUGUST_DVBT205*/,
++		&rtl28xxu_props, "August DVB-T 205", NULL) },
++	{ DVB_USB_DEVICE(USB_VID_GTEK, 0xa803 /*USB_PID_AUGUST_DVBT205*/,
++		&rtl28xxu_props, "August DVB-T 205", NULL) },
+ 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a03,
+ 		&rtl28xxu_props, "Leadtek WinFast DTV Dongle mini", NULL) },
+ 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_CPYTO_REDI_PC50A,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0081-Improve-__copy_to_user-and-__copy_from_user-performa.patch b/target/linux/bcm27xx/patches-5.15/950-0081-Improve-__copy_to_user-and-__copy_from_user-performa.patch
new file mode 100644
index 0000000000..88ce707c83
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0081-Improve-__copy_to_user-and-__copy_from_user-performa.patch
@@ -0,0 +1,1586 @@
+From dacf9893c23c5563a757a49be907f07bc81bb456 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Mon, 28 Nov 2016 16:50:04 +0000
+Subject: [PATCH] Improve __copy_to_user and __copy_from_user
+ performance
+
+Provide a __copy_from_user that uses memcpy. On BCM2708, use
+optimised memcpy/memmove/memcmp/memset implementations.
+
+arch/arm: Add mmiocpy/set aliases for memcpy/set
+
+See: https://github.com/raspberrypi/linux/issues/1082
+
+copy_from_user: CPU_SW_DOMAIN_PAN compatibility
+
+The downstream copy_from_user acceleration must also play nice with
+CONFIG_CPU_SW_DOMAIN_PAN.
+
+See: https://github.com/raspberrypi/linux/issues/1381
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+Fix copy_from_user if BCM2835_FAST_MEMCPY=n
+
+The change which introduced CONFIG_BCM2835_FAST_MEMCPY unconditionally
+changed the behaviour of arm_copy_from_user. The page pinning code
+is not safe on ARMv7 if LPAE & high memory is enabled and causes
+crashes which look like PTE corruption.
+
+Make __copy_from_user_memcpy conditional on CONFIG_2835_FAST_MEMCPY=y
+which is really an ARMv6 / Pi1 optimization and not necessary on newer
+ARM processors.
+
+arm: fix mmap unlocks in uaccess_with_memcpy.c
+
+This is a regression that was added with the commit 192a4e923ef092924dd013e7326f2ec520ee4783 as of rpi-5.8.y, since that is when the move to the mmap locking API was introduced - d8ed45c5dcd455fc5848d47f86883a1b872ac0d0
+
+The issue is that when the patch to improve performance for the __copy_to_user and __copy_from_user functions were added for the Raspberry Pi, some of the mmaps were incorrectly mapped to write instead of read. This would cause a verity of issues, and in my case, prevent the booting of a squashfs filesystem on rpi-5.8-y and above. An example of the panic you would see from this can be seen at https://pastebin.com/raw/jBz5xCzL
+
+Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
+Signed-off-by: Christopher Blake <chrisrblake93@gmail.com>
+---
+ arch/arm/include/asm/string.h      |   5 +
+ arch/arm/include/asm/uaccess.h     |   3 +
+ arch/arm/lib/Makefile              |  14 +-
+ arch/arm/lib/arm-mem.h             | 159 +++++++++
+ arch/arm/lib/copy_from_user.S      |   4 +-
+ arch/arm/lib/exports_rpi.c         |  37 +++
+ arch/arm/lib/memcmp_rpi.S          | 285 ++++++++++++++++
+ arch/arm/lib/memcpy_rpi.S          |  61 ++++
+ arch/arm/lib/memcpymove.h          | 506 +++++++++++++++++++++++++++++
+ arch/arm/lib/memmove_rpi.S         |  61 ++++
+ arch/arm/lib/memset_rpi.S          | 128 ++++++++
+ arch/arm/lib/uaccess_with_memcpy.c | 130 +++++++-
+ arch/arm/mach-bcm/Kconfig          |   7 +
+ 13 files changed, 1394 insertions(+), 6 deletions(-)
+ create mode 100644 arch/arm/lib/arm-mem.h
+ create mode 100644 arch/arm/lib/exports_rpi.c
+ create mode 100644 arch/arm/lib/memcmp_rpi.S
+ create mode 100644 arch/arm/lib/memcpy_rpi.S
+ create mode 100644 arch/arm/lib/memcpymove.h
+ create mode 100644 arch/arm/lib/memmove_rpi.S
+ create mode 100644 arch/arm/lib/memset_rpi.S
+
+--- a/arch/arm/include/asm/string.h
++++ b/arch/arm/include/asm/string.h
+@@ -65,4 +65,9 @@ static inline void *memset64(uint64_t *p
+ 
+ #endif
+ 
++#ifdef CONFIG_BCM2835_FAST_MEMCPY
++#define __HAVE_ARCH_MEMCMP
++extern int memcmp(const void *, const void *, size_t);
++#endif
++
+ #endif
+--- a/arch/arm/include/asm/uaccess.h
++++ b/arch/arm/include/asm/uaccess.h
+@@ -529,6 +529,9 @@ do {									\
+ extern unsigned long __must_check
+ arm_copy_from_user(void *to, const void __user *from, unsigned long n);
+ 
++extern unsigned long __must_check
++__copy_from_user_std(void *to, const void __user *from, unsigned long n);
++
+ static inline unsigned long __must_check
+ raw_copy_from_user(void *to, const void __user *from, unsigned long n)
+ {
+--- a/arch/arm/lib/Makefile
++++ b/arch/arm/lib/Makefile
+@@ -7,8 +7,8 @@
+ 
+ lib-y		:= changebit.o csumipv6.o csumpartial.o               \
+ 		   csumpartialcopy.o csumpartialcopyuser.o clearbit.o \
+-		   delay.o delay-loop.o findbit.o memchr.o memcpy.o   \
+-		   memmove.o memset.o setbit.o                        \
++		   delay.o delay-loop.o findbit.o memchr.o            \
++		   setbit.o                                           \
+ 		   strchr.o strrchr.o                                 \
+ 		   testchangebit.o testclearbit.o testsetbit.o        \
+ 		   ashldi3.o ashrdi3.o lshrdi3.o muldi3.o             \
+@@ -25,6 +25,16 @@ else
+   lib-y	+= backtrace.o
+ endif
+ 
++# Choose optimised implementations for Raspberry Pi
++ifeq ($(CONFIG_BCM2835_FAST_MEMCPY),y)
++  CFLAGS_uaccess_with_memcpy.o += -DCOPY_FROM_USER_THRESHOLD=1600
++  CFLAGS_uaccess_with_memcpy.o += -DCOPY_TO_USER_THRESHOLD=672
++  obj-$(CONFIG_MODULES) += exports_rpi.o
++  lib-y        += memcpy_rpi.o memmove_rpi.o memset_rpi.o memcmp_rpi.o
++else
++  lib-y        += memcpy.o memmove.o memset.o
++endif
++
+ # using lib_ here won't override already available weak symbols
+ obj-$(CONFIG_UACCESS_WITH_MEMCPY) += uaccess_with_memcpy.o
+ 
+--- /dev/null
++++ b/arch/arm/lib/arm-mem.h
+@@ -0,0 +1,159 @@
++/*
++Copyright (c) 2013, Raspberry Pi Foundation
++Copyright (c) 2013, RISC OS Open Ltd
++All rights reserved.
++
++Redistribution and use in source and binary forms, with or without
++modification, are permitted provided that the following conditions are met:
++    * Redistributions of source code must retain the above copyright
++      notice, this list of conditions and the following disclaimer.
++    * Redistributions in binary form must reproduce the above copyright
++      notice, this list of conditions and the following disclaimer in the
++      documentation and/or other materials provided with the distribution.
++    * Neither the name of the copyright holder nor the
++      names of its contributors may be used to endorse or promote products
++      derived from this software without specific prior written permission.
++
++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
++DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++*/
++
++.macro myfunc fname
++ .func fname
++ .global fname
++fname:
++.endm
++
++.macro preload_leading_step1  backwards, ptr, base
++/* If the destination is already 16-byte aligned, then we need to preload
++ * between 0 and prefetch_distance (inclusive) cache lines ahead so there
++ * are no gaps when the inner loop starts.
++ */
++ .if backwards
++        sub     ptr, base, #1
++        bic     ptr, ptr, #31
++ .else
++        bic     ptr, base, #31
++ .endif
++ .set OFFSET, 0
++ .rept prefetch_distance+1
++        pld     [ptr, #OFFSET]
++  .if backwards
++   .set OFFSET, OFFSET-32
++  .else
++   .set OFFSET, OFFSET+32
++  .endif
++ .endr
++.endm
++
++.macro preload_leading_step2  backwards, ptr, base, leading_bytes, tmp
++/* However, if the destination is not 16-byte aligned, we may need to
++ * preload one more cache line than that. The question we need to ask is:
++ * are the leading bytes more than the amount by which the source
++ * pointer will be rounded down for preloading, and if so, by how many
++ * cache lines?
++ */
++ .if backwards
++/* Here we compare against how many bytes we are into the
++ * cache line, counting down from the highest such address.
++ * Effectively, we want to calculate
++ *     leading_bytes = dst&15
++ *     cacheline_offset = 31-((src-leading_bytes-1)&31)
++ *     extra_needed = leading_bytes - cacheline_offset
++ * and test if extra_needed is <= 0, or rearranging:
++ *     leading_bytes + (src-leading_bytes-1)&31 <= 31
++ */
++        mov     tmp, base, lsl #32-5
++        sbc     tmp, tmp, leading_bytes, lsl #32-5
++        adds    tmp, tmp, leading_bytes, lsl #32-5
++        bcc     61f
++        pld     [ptr, #-32*(prefetch_distance+1)]
++ .else
++/* Effectively, we want to calculate
++ *     leading_bytes = (-dst)&15
++ *     cacheline_offset = (src+leading_bytes)&31
++ *     extra_needed = leading_bytes - cacheline_offset
++ * and test if extra_needed is <= 0.
++ */
++        mov     tmp, base, lsl #32-5
++        add     tmp, tmp, leading_bytes, lsl #32-5
++        rsbs    tmp, tmp, leading_bytes, lsl #32-5
++        bls     61f
++        pld     [ptr, #32*(prefetch_distance+1)]
++ .endif
++61:
++.endm
++
++.macro preload_trailing  backwards, base, remain, tmp
++        /* We need either 0, 1 or 2 extra preloads */
++ .if backwards
++        rsb     tmp, base, #0
++        mov     tmp, tmp, lsl #32-5
++ .else
++        mov     tmp, base, lsl #32-5
++ .endif
++        adds    tmp, tmp, remain, lsl #32-5
++        adceqs  tmp, tmp, #0
++        /* The instruction above has two effects: ensures Z is only
++         * set if C was clear (so Z indicates that both shifted quantities
++         * were 0), and clears C if Z was set (so C indicates that the sum
++         * of the shifted quantities was greater and not equal to 32) */
++        beq     82f
++ .if backwards
++        sub     tmp, base, #1
++        bic     tmp, tmp, #31
++ .else
++        bic     tmp, base, #31
++ .endif
++        bcc     81f
++ .if backwards
++        pld     [tmp, #-32*(prefetch_distance+1)]
++81:
++        pld     [tmp, #-32*prefetch_distance]
++ .else
++        pld     [tmp, #32*(prefetch_distance+2)]
++81:
++        pld     [tmp, #32*(prefetch_distance+1)]
++ .endif
++82:
++.endm
++
++.macro preload_all    backwards, narrow_case, shift, base, remain, tmp0, tmp1
++ .if backwards
++        sub     tmp0, base, #1
++        bic     tmp0, tmp0, #31
++        pld     [tmp0]
++        sub     tmp1, base, remain, lsl #shift
++ .else
++        bic     tmp0, base, #31
++        pld     [tmp0]
++        add     tmp1, base, remain, lsl #shift
++        sub     tmp1, tmp1, #1
++ .endif
++        bic     tmp1, tmp1, #31
++        cmp     tmp1, tmp0
++        beq     92f
++ .if narrow_case
++        /* In this case, all the data fits in either 1 or 2 cache lines */
++        pld     [tmp1]
++ .else
++91:
++  .if backwards
++        sub     tmp0, tmp0, #32
++  .else
++        add     tmp0, tmp0, #32
++  .endif
++        cmp     tmp0, tmp1
++        pld     [tmp0]
++        bne     91b
++ .endif
++92:
++.endm
+--- a/arch/arm/lib/copy_from_user.S
++++ b/arch/arm/lib/copy_from_user.S
+@@ -107,7 +107,8 @@
+ 
+ 	.text
+ 
+-ENTRY(arm_copy_from_user)
++ENTRY(__copy_from_user_std)
++WEAK(arm_copy_from_user)
+ #ifdef CONFIG_CPU_SPECTRE
+ 	ldr	r3, =TASK_SIZE
+ 	uaccess_mask_range_ptr r1, r2, r3, ip
+@@ -116,6 +117,7 @@ ENTRY(arm_copy_from_user)
+ #include "copy_template.S"
+ 
+ ENDPROC(arm_copy_from_user)
++ENDPROC(__copy_from_user_std)
+ 
+ 	.pushsection .text.fixup,"ax"
+ 	.align 0
+--- /dev/null
++++ b/arch/arm/lib/exports_rpi.c
+@@ -0,0 +1,37 @@
++/**
++ * Copyright (c) 2014, Raspberry Pi (Trading) Ltd.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2, as published by the Free
++ * Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++
++EXPORT_SYMBOL(memcmp);
+--- /dev/null
++++ b/arch/arm/lib/memcmp_rpi.S
+@@ -0,0 +1,285 @@
++/*
++Copyright (c) 2013, Raspberry Pi Foundation
++Copyright (c) 2013, RISC OS Open Ltd
++All rights reserved.
++
++Redistribution and use in source and binary forms, with or without
++modification, are permitted provided that the following conditions are met:
++    * Redistributions of source code must retain the above copyright
++      notice, this list of conditions and the following disclaimer.
++    * Redistributions in binary form must reproduce the above copyright
++      notice, this list of conditions and the following disclaimer in the
++      documentation and/or other materials provided with the distribution.
++    * Neither the name of the copyright holder nor the
++      names of its contributors may be used to endorse or promote products
++      derived from this software without specific prior written permission.
++
++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
++DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++*/
++
++#include <linux/linkage.h>
++#include "arm-mem.h"
++
++/* Prevent the stack from becoming executable */
++#if defined(__linux__) && defined(__ELF__)
++.section .note.GNU-stack,"",%progbits
++#endif
++
++    .text
++    .arch armv6
++    .object_arch armv4
++    .arm
++    .altmacro
++    .p2align 2
++
++.macro memcmp_process_head  unaligned
++ .if unaligned
++        ldr     DAT0, [S_1], #4
++        ldr     DAT1, [S_1], #4
++        ldr     DAT2, [S_1], #4
++        ldr     DAT3, [S_1], #4
++ .else
++        ldmia   S_1!, {DAT0, DAT1, DAT2, DAT3}
++ .endif
++        ldmia   S_2!, {DAT4, DAT5, DAT6, DAT7}
++.endm
++
++.macro memcmp_process_tail
++        cmp     DAT0, DAT4
++        cmpeq   DAT1, DAT5
++        cmpeq   DAT2, DAT6
++        cmpeq   DAT3, DAT7
++        bne     200f
++.endm
++
++.macro memcmp_leading_31bytes
++        movs    DAT0, OFF, lsl #31
++        ldrmib  DAT0, [S_1], #1
++        ldrcsh  DAT1, [S_1], #2
++        ldrmib  DAT4, [S_2], #1
++        ldrcsh  DAT5, [S_2], #2
++        movpl   DAT0, #0
++        movcc   DAT1, #0
++        movpl   DAT4, #0
++        movcc   DAT5, #0
++        submi   N, N, #1
++        subcs   N, N, #2
++        cmp     DAT0, DAT4
++        cmpeq   DAT1, DAT5
++        bne     200f
++        movs    DAT0, OFF, lsl #29
++        ldrmi   DAT0, [S_1], #4
++        ldrcs   DAT1, [S_1], #4
++        ldrcs   DAT2, [S_1], #4
++        ldrmi   DAT4, [S_2], #4
++        ldmcsia S_2!, {DAT5, DAT6}
++        movpl   DAT0, #0
++        movcc   DAT1, #0
++        movcc   DAT2, #0
++        movpl   DAT4, #0
++        movcc   DAT5, #0
++        movcc   DAT6, #0
++        submi   N, N, #4
++        subcs   N, N, #8
++        cmp     DAT0, DAT4
++        cmpeq   DAT1, DAT5
++        cmpeq   DAT2, DAT6
++        bne     200f
++        tst     OFF, #16
++        beq     105f
++        memcmp_process_head  1
++        sub     N, N, #16
++        memcmp_process_tail
++105:
++.endm
++
++.macro memcmp_trailing_15bytes  unaligned
++        movs    N, N, lsl #29
++ .if unaligned
++        ldrcs   DAT0, [S_1], #4
++        ldrcs   DAT1, [S_1], #4
++ .else
++        ldmcsia S_1!, {DAT0, DAT1}
++ .endif
++        ldrmi   DAT2, [S_1], #4
++        ldmcsia S_2!, {DAT4, DAT5}
++        ldrmi   DAT6, [S_2], #4
++        movcc   DAT0, #0
++        movcc   DAT1, #0
++        movpl   DAT2, #0
++        movcc   DAT4, #0
++        movcc   DAT5, #0
++        movpl   DAT6, #0
++        cmp     DAT0, DAT4
++        cmpeq   DAT1, DAT5
++        cmpeq   DAT2, DAT6
++        bne     200f
++        movs    N, N, lsl #2
++        ldrcsh  DAT0, [S_1], #2
++        ldrmib  DAT1, [S_1]
++        ldrcsh  DAT4, [S_2], #2
++        ldrmib  DAT5, [S_2]
++        movcc   DAT0, #0
++        movpl   DAT1, #0
++        movcc   DAT4, #0
++        movpl   DAT5, #0
++        cmp     DAT0, DAT4
++        cmpeq   DAT1, DAT5
++        bne     200f
++.endm
++
++.macro memcmp_long_inner_loop  unaligned
++110:
++        memcmp_process_head  unaligned
++        pld     [S_2, #prefetch_distance*32 + 16]
++        memcmp_process_tail
++        memcmp_process_head  unaligned
++        pld     [S_1, OFF]
++        memcmp_process_tail
++        subs    N, N, #32
++        bhs     110b
++        /* Just before the final (prefetch_distance+1) 32-byte blocks,
++         * deal with final preloads */
++        preload_trailing  0, S_1, N, DAT0
++        preload_trailing  0, S_2, N, DAT0
++        add     N, N, #(prefetch_distance+2)*32 - 16
++120:
++        memcmp_process_head  unaligned
++        memcmp_process_tail
++        subs    N, N, #16
++        bhs     120b
++        /* Trailing words and bytes */
++        tst     N, #15
++        beq     199f
++        memcmp_trailing_15bytes  unaligned
++199:    /* Reached end without detecting a difference */
++        mov     a1, #0
++        setend  le
++        pop     {DAT1-DAT6, pc}
++.endm
++
++.macro memcmp_short_inner_loop  unaligned
++        subs    N, N, #16     /* simplifies inner loop termination */
++        blo     122f
++120:
++        memcmp_process_head  unaligned
++        memcmp_process_tail
++        subs    N, N, #16
++        bhs     120b
++122:    /* Trailing words and bytes */
++        tst     N, #15
++        beq     199f
++        memcmp_trailing_15bytes  unaligned
++199:    /* Reached end without detecting a difference */
++        mov     a1, #0
++        setend  le
++        pop     {DAT1-DAT6, pc}
++.endm
++
++/*
++ * int memcmp(const void *s1, const void *s2, size_t n);
++ * On entry:
++ * a1 = pointer to buffer 1
++ * a2 = pointer to buffer 2
++ * a3 = number of bytes to compare (as unsigned chars)
++ * On exit:
++ * a1 = >0/=0/<0 if s1 >/=/< s2
++ */
++
++.set prefetch_distance, 2
++
++ENTRY(memcmp)
++        S_1     .req    a1
++        S_2     .req    a2
++        N       .req    a3
++        DAT0    .req    a4
++        DAT1    .req    v1
++        DAT2    .req    v2
++        DAT3    .req    v3
++        DAT4    .req    v4
++        DAT5    .req    v5
++        DAT6    .req    v6
++        DAT7    .req    ip
++        OFF     .req    lr
++
++        push    {DAT1-DAT6, lr}
++        setend  be /* lowest-addressed bytes are most significant */
++
++        /* To preload ahead as we go, we need at least (prefetch_distance+2) 32-byte blocks */
++        cmp     N, #(prefetch_distance+3)*32 - 1
++        blo     170f
++
++        /* Long case */
++        /* Adjust N so that the decrement instruction can also test for
++         * inner loop termination. We want it to stop when there are
++         * (prefetch_distance+1) complete blocks to go. */
++        sub     N, N, #(prefetch_distance+2)*32
++        preload_leading_step1  0, DAT0, S_1
++        preload_leading_step1  0, DAT1, S_2
++        tst     S_2, #31
++        beq     154f
++        rsb     OFF, S_2, #0 /* no need to AND with 15 here */
++        preload_leading_step2  0, DAT0, S_1, OFF, DAT2
++        preload_leading_step2  0, DAT1, S_2, OFF, DAT2
++        memcmp_leading_31bytes
++154:    /* Second source now cacheline (32-byte) aligned; we have at
++         * least one prefetch to go. */
++        /* Prefetch offset is best selected such that it lies in the
++         * first 8 of each 32 bytes - but it's just as easy to aim for
++         * the first one */
++        and     OFF, S_1, #31
++        rsb     OFF, OFF, #32*prefetch_distance
++        tst     S_1, #3
++        bne     140f
++        memcmp_long_inner_loop  0
++140:    memcmp_long_inner_loop  1
++
++170:    /* Short case */
++        teq     N, #0
++        beq     199f
++        preload_all 0, 0, 0, S_1, N, DAT0, DAT1
++        preload_all 0, 0, 0, S_2, N, DAT0, DAT1
++        tst     S_2, #3
++        beq     174f
++172:    subs    N, N, #1
++        blo     199f
++        ldrb    DAT0, [S_1], #1
++        ldrb    DAT4, [S_2], #1
++        cmp     DAT0, DAT4
++        bne     200f
++        tst     S_2, #3
++        bne     172b
++174:    /* Second source now 4-byte aligned; we have 0 or more bytes to go */
++        tst     S_1, #3
++        bne     140f
++        memcmp_short_inner_loop  0
++140:    memcmp_short_inner_loop  1
++
++200:    /* Difference found: determine sign. */
++        movhi   a1, #1
++        movlo   a1, #-1
++        setend  le
++        pop     {DAT1-DAT6, pc}
++
++        .unreq  S_1
++        .unreq  S_2
++        .unreq  N
++        .unreq  DAT0
++        .unreq  DAT1
++        .unreq  DAT2
++        .unreq  DAT3
++        .unreq  DAT4
++        .unreq  DAT5
++        .unreq  DAT6
++        .unreq  DAT7
++        .unreq  OFF
++ENDPROC(memcmp)
+--- /dev/null
++++ b/arch/arm/lib/memcpy_rpi.S
+@@ -0,0 +1,61 @@
++/*
++Copyright (c) 2013, Raspberry Pi Foundation
++Copyright (c) 2013, RISC OS Open Ltd
++All rights reserved.
++
++Redistribution and use in source and binary forms, with or without
++modification, are permitted provided that the following conditions are met:
++    * Redistributions of source code must retain the above copyright
++      notice, this list of conditions and the following disclaimer.
++    * Redistributions in binary form must reproduce the above copyright
++      notice, this list of conditions and the following disclaimer in the
++      documentation and/or other materials provided with the distribution.
++    * Neither the name of the copyright holder nor the
++      names of its contributors may be used to endorse or promote products
++      derived from this software without specific prior written permission.
++
++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
++DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++*/
++
++#include <linux/linkage.h>
++#include "arm-mem.h"
++#include "memcpymove.h"
++
++/* Prevent the stack from becoming executable */
++#if defined(__linux__) && defined(__ELF__)
++.section .note.GNU-stack,"",%progbits
++#endif
++
++    .text
++    .arch armv6
++    .object_arch armv4
++    .arm
++    .altmacro
++    .p2align 2
++
++/*
++ * void *memcpy(void * restrict s1, const void * restrict s2, size_t n);
++ * On entry:
++ * a1 = pointer to destination
++ * a2 = pointer to source
++ * a3 = number of bytes to copy
++ * On exit:
++ * a1 preserved
++ */
++
++.set prefetch_distance, 3
++
++ENTRY(mmiocpy)
++ENTRY(memcpy)
++        memcpy  0
++ENDPROC(memcpy)
++ENDPROC(mmiocpy)
+--- /dev/null
++++ b/arch/arm/lib/memcpymove.h
+@@ -0,0 +1,506 @@
++/*
++Copyright (c) 2013, Raspberry Pi Foundation
++Copyright (c) 2013, RISC OS Open Ltd
++All rights reserved.
++
++Redistribution and use in source and binary forms, with or without
++modification, are permitted provided that the following conditions are met:
++    * Redistributions of source code must retain the above copyright
++      notice, this list of conditions and the following disclaimer.
++    * Redistributions in binary form must reproduce the above copyright
++      notice, this list of conditions and the following disclaimer in the
++      documentation and/or other materials provided with the distribution.
++    * Neither the name of the copyright holder nor the
++      names of its contributors may be used to endorse or promote products
++      derived from this software without specific prior written permission.
++
++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
++DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++*/
++
++.macro unaligned_words  backwards, align, use_pld, words, r0, r1, r2, r3, r4, r5, r6, r7, r8
++ .if words == 1
++  .if backwards
++        mov     r1, r0, lsl #32-align*8
++        ldr     r0, [S, #-4]!
++        orr     r1, r1, r0, lsr #align*8
++        str     r1, [D, #-4]!
++  .else
++        mov     r0, r1, lsr #align*8
++        ldr     r1, [S, #4]!
++        orr     r0, r0, r1, lsl #32-align*8
++        str     r0, [D], #4
++  .endif
++ .elseif words == 2
++  .if backwards
++        ldr     r1, [S, #-4]!
++        mov     r2, r0, lsl #32-align*8
++        ldr     r0, [S, #-4]!
++        orr     r2, r2, r1, lsr #align*8
++        mov     r1, r1, lsl #32-align*8
++        orr     r1, r1, r0, lsr #align*8
++        stmdb   D!, {r1, r2}
++  .else
++        ldr     r1, [S, #4]!
++        mov     r0, r2, lsr #align*8
++        ldr     r2, [S, #4]!
++        orr     r0, r0, r1, lsl #32-align*8
++        mov     r1, r1, lsr #align*8
++        orr     r1, r1, r2, lsl #32-align*8
++        stmia   D!, {r0, r1}
++  .endif
++ .elseif words == 4
++  .if backwards
++        ldmdb   S!, {r2, r3}
++        mov     r4, r0, lsl #32-align*8
++        ldmdb   S!, {r0, r1}
++        orr     r4, r4, r3, lsr #align*8
++        mov     r3, r3, lsl #32-align*8
++        orr     r3, r3, r2, lsr #align*8
++        mov     r2, r2, lsl #32-align*8
++        orr     r2, r2, r1, lsr #align*8
++        mov     r1, r1, lsl #32-align*8
++        orr     r1, r1, r0, lsr #align*8
++        stmdb   D!, {r1, r2, r3, r4}
++  .else
++        ldmib   S!, {r1, r2}
++        mov     r0, r4, lsr #align*8
++        ldmib   S!, {r3, r4}
++        orr     r0, r0, r1, lsl #32-align*8
++        mov     r1, r1, lsr #align*8
++        orr     r1, r1, r2, lsl #32-align*8
++        mov     r2, r2, lsr #align*8
++        orr     r2, r2, r3, lsl #32-align*8
++        mov     r3, r3, lsr #align*8
++        orr     r3, r3, r4, lsl #32-align*8
++        stmia   D!, {r0, r1, r2, r3}
++  .endif
++ .elseif words == 8
++  .if backwards
++        ldmdb   S!, {r4, r5, r6, r7}
++        mov     r8, r0, lsl #32-align*8
++        ldmdb   S!, {r0, r1, r2, r3}
++   .if use_pld
++        pld     [S, OFF]
++   .endif
++        orr     r8, r8, r7, lsr #align*8
++        mov     r7, r7, lsl #32-align*8
++        orr     r7, r7, r6, lsr #align*8
++        mov     r6, r6, lsl #32-align*8
++        orr     r6, r6, r5, lsr #align*8
++        mov     r5, r5, lsl #32-align*8
++        orr     r5, r5, r4, lsr #align*8
++        mov     r4, r4, lsl #32-align*8
++        orr     r4, r4, r3, lsr #align*8
++        mov     r3, r3, lsl #32-align*8
++        orr     r3, r3, r2, lsr #align*8
++        mov     r2, r2, lsl #32-align*8
++        orr     r2, r2, r1, lsr #align*8
++        mov     r1, r1, lsl #32-align*8
++        orr     r1, r1, r0, lsr #align*8
++        stmdb   D!, {r5, r6, r7, r8}
++        stmdb   D!, {r1, r2, r3, r4}
++  .else
++        ldmib   S!, {r1, r2, r3, r4}
++        mov     r0, r8, lsr #align*8
++        ldmib   S!, {r5, r6, r7, r8}
++   .if use_pld
++        pld     [S, OFF]
++   .endif
++        orr     r0, r0, r1, lsl #32-align*8
++        mov     r1, r1, lsr #align*8
++        orr     r1, r1, r2, lsl #32-align*8
++        mov     r2, r2, lsr #align*8
++        orr     r2, r2, r3, lsl #32-align*8
++        mov     r3, r3, lsr #align*8
++        orr     r3, r3, r4, lsl #32-align*8
++        mov     r4, r4, lsr #align*8
++        orr     r4, r4, r5, lsl #32-align*8
++        mov     r5, r5, lsr #align*8
++        orr     r5, r5, r6, lsl #32-align*8
++        mov     r6, r6, lsr #align*8
++        orr     r6, r6, r7, lsl #32-align*8
++        mov     r7, r7, lsr #align*8
++        orr     r7, r7, r8, lsl #32-align*8
++        stmia   D!, {r0, r1, r2, r3}
++        stmia   D!, {r4, r5, r6, r7}
++  .endif
++ .endif
++.endm
++
++.macro memcpy_leading_15bytes  backwards, align
++        movs    DAT1, DAT2, lsl #31
++        sub     N, N, DAT2
++ .if backwards
++        ldrmib  DAT0, [S, #-1]!
++        ldrcsh  DAT1, [S, #-2]!
++        strmib  DAT0, [D, #-1]!
++        strcsh  DAT1, [D, #-2]!
++ .else
++        ldrmib  DAT0, [S], #1
++        ldrcsh  DAT1, [S], #2
++        strmib  DAT0, [D], #1
++        strcsh  DAT1, [D], #2
++ .endif
++        movs    DAT1, DAT2, lsl #29
++ .if backwards
++        ldrmi   DAT0, [S, #-4]!
++  .if align == 0
++        ldmcsdb S!, {DAT1, DAT2}
++  .else
++        ldrcs   DAT2, [S, #-4]!
++        ldrcs   DAT1, [S, #-4]!
++  .endif
++        strmi   DAT0, [D, #-4]!
++        stmcsdb D!, {DAT1, DAT2}
++ .else
++        ldrmi   DAT0, [S], #4
++  .if align == 0
++        ldmcsia S!, {DAT1, DAT2}
++  .else
++        ldrcs   DAT1, [S], #4
++        ldrcs   DAT2, [S], #4
++  .endif
++        strmi   DAT0, [D], #4
++        stmcsia D!, {DAT1, DAT2}
++ .endif
++.endm
++
++.macro memcpy_trailing_15bytes  backwards, align
++        movs    N, N, lsl #29
++ .if backwards
++  .if align == 0
++        ldmcsdb S!, {DAT0, DAT1}
++  .else
++        ldrcs   DAT1, [S, #-4]!
++        ldrcs   DAT0, [S, #-4]!
++  .endif
++        ldrmi   DAT2, [S, #-4]!
++        stmcsdb D!, {DAT0, DAT1}
++        strmi   DAT2, [D, #-4]!
++ .else
++  .if align == 0
++        ldmcsia S!, {DAT0, DAT1}
++  .else
++        ldrcs   DAT0, [S], #4
++        ldrcs   DAT1, [S], #4
++  .endif
++        ldrmi   DAT2, [S], #4
++        stmcsia D!, {DAT0, DAT1}
++        strmi   DAT2, [D], #4
++ .endif
++        movs    N, N, lsl #2
++ .if backwards
++        ldrcsh  DAT0, [S, #-2]!
++        ldrmib  DAT1, [S, #-1]
++        strcsh  DAT0, [D, #-2]!
++        strmib  DAT1, [D, #-1]
++ .else
++        ldrcsh  DAT0, [S], #2
++        ldrmib  DAT1, [S]
++        strcsh  DAT0, [D], #2
++        strmib  DAT1, [D]
++ .endif
++.endm
++
++.macro memcpy_long_inner_loop  backwards, align
++ .if align != 0
++  .if backwards
++        ldr     DAT0, [S, #-align]!
++  .else
++        ldr     LAST, [S, #-align]!
++  .endif
++ .endif
++110:
++ .if align == 0
++  .if backwards
++        ldmdb   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
++        pld     [S, OFF]
++        stmdb   D!, {DAT4, DAT5, DAT6, LAST}
++        stmdb   D!, {DAT0, DAT1, DAT2, DAT3}
++  .else
++        ldmia   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
++        pld     [S, OFF]
++        stmia   D!, {DAT0, DAT1, DAT2, DAT3}
++        stmia   D!, {DAT4, DAT5, DAT6, LAST}
++  .endif
++ .else
++        unaligned_words  backwards, align, 1, 8, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7, LAST
++ .endif
++        subs    N, N, #32
++        bhs     110b
++        /* Just before the final (prefetch_distance+1) 32-byte blocks, deal with final preloads */
++        preload_trailing  backwards, S, N, OFF
++        add     N, N, #(prefetch_distance+2)*32 - 32
++120:
++ .if align == 0
++  .if backwards
++        ldmdb   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
++        stmdb   D!, {DAT4, DAT5, DAT6, LAST}
++        stmdb   D!, {DAT0, DAT1, DAT2, DAT3}
++  .else
++        ldmia   S!, {DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, LAST}
++        stmia   D!, {DAT0, DAT1, DAT2, DAT3}
++        stmia   D!, {DAT4, DAT5, DAT6, LAST}
++  .endif
++ .else
++        unaligned_words  backwards, align, 0, 8, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7, LAST
++ .endif
++        subs    N, N, #32
++        bhs     120b
++        tst     N, #16
++ .if align == 0
++  .if backwards
++        ldmnedb S!, {DAT0, DAT1, DAT2, LAST}
++        stmnedb D!, {DAT0, DAT1, DAT2, LAST}
++  .else
++        ldmneia S!, {DAT0, DAT1, DAT2, LAST}
++        stmneia D!, {DAT0, DAT1, DAT2, LAST}
++  .endif
++ .else
++        beq     130f
++        unaligned_words  backwards, align, 0, 4, DAT0, DAT1, DAT2, DAT3, LAST
++130:
++ .endif
++        /* Trailing words and bytes */
++        tst      N, #15
++        beq      199f
++ .if align != 0
++        add     S, S, #align
++ .endif
++        memcpy_trailing_15bytes  backwards, align
++199:
++        pop     {DAT3, DAT4, DAT5, DAT6, DAT7}
++        pop     {D, DAT1, DAT2, pc}
++.endm
++
++.macro memcpy_medium_inner_loop  backwards, align
++120:
++ .if backwards
++  .if align == 0
++        ldmdb   S!, {DAT0, DAT1, DAT2, LAST}
++  .else
++        ldr     LAST, [S, #-4]!
++        ldr     DAT2, [S, #-4]!
++        ldr     DAT1, [S, #-4]!
++        ldr     DAT0, [S, #-4]!
++  .endif
++        stmdb   D!, {DAT0, DAT1, DAT2, LAST}
++ .else
++  .if align == 0
++        ldmia   S!, {DAT0, DAT1, DAT2, LAST}
++  .else
++        ldr     DAT0, [S], #4
++        ldr     DAT1, [S], #4
++        ldr     DAT2, [S], #4
++        ldr     LAST, [S], #4
++  .endif
++        stmia   D!, {DAT0, DAT1, DAT2, LAST}
++ .endif
++        subs     N, N, #16
++        bhs      120b
++        /* Trailing words and bytes */
++        tst      N, #15
++        beq      199f
++        memcpy_trailing_15bytes  backwards, align
++199:
++        pop     {D, DAT1, DAT2, pc}
++.endm
++
++.macro memcpy_short_inner_loop  backwards, align
++        tst     N, #16
++ .if backwards
++  .if align == 0
++        ldmnedb S!, {DAT0, DAT1, DAT2, LAST}
++  .else
++        ldrne   LAST, [S, #-4]!
++        ldrne   DAT2, [S, #-4]!
++        ldrne   DAT1, [S, #-4]!
++        ldrne   DAT0, [S, #-4]!
++  .endif
++        stmnedb D!, {DAT0, DAT1, DAT2, LAST}
++ .else
++  .if align == 0
++        ldmneia S!, {DAT0, DAT1, DAT2, LAST}
++  .else
++        ldrne   DAT0, [S], #4
++        ldrne   DAT1, [S], #4
++        ldrne   DAT2, [S], #4
++        ldrne   LAST, [S], #4
++  .endif
++        stmneia D!, {DAT0, DAT1, DAT2, LAST}
++ .endif
++        memcpy_trailing_15bytes  backwards, align
++199:
++        pop     {D, DAT1, DAT2, pc}
++.endm
++
++.macro memcpy backwards
++        D       .req    a1
++        S       .req    a2
++        N       .req    a3
++        DAT0    .req    a4
++        DAT1    .req    v1
++        DAT2    .req    v2
++        DAT3    .req    v3
++        DAT4    .req    v4
++        DAT5    .req    v5
++        DAT6    .req    v6
++        DAT7    .req    sl
++        LAST    .req    ip
++        OFF     .req    lr
++
++        .cfi_startproc
++
++        push    {D, DAT1, DAT2, lr}
++
++        .cfi_def_cfa_offset 16
++        .cfi_rel_offset D, 0
++        .cfi_undefined  S
++        .cfi_undefined  N
++        .cfi_undefined  DAT0
++        .cfi_rel_offset DAT1, 4
++        .cfi_rel_offset DAT2, 8
++        .cfi_undefined  LAST
++        .cfi_rel_offset lr, 12
++
++ .if backwards
++        add     D, D, N
++        add     S, S, N
++ .endif
++
++        /* See if we're guaranteed to have at least one 16-byte aligned 16-byte write */
++        cmp     N, #31
++        blo     170f
++        /* To preload ahead as we go, we need at least (prefetch_distance+2) 32-byte blocks */
++        cmp     N, #(prefetch_distance+3)*32 - 1
++        blo     160f
++
++        /* Long case */
++        push    {DAT3, DAT4, DAT5, DAT6, DAT7}
++
++        .cfi_def_cfa_offset 36
++        .cfi_rel_offset D, 20
++        .cfi_rel_offset DAT1, 24
++        .cfi_rel_offset DAT2, 28
++        .cfi_rel_offset DAT3, 0
++        .cfi_rel_offset DAT4, 4
++        .cfi_rel_offset DAT5, 8
++        .cfi_rel_offset DAT6, 12
++        .cfi_rel_offset DAT7, 16
++        .cfi_rel_offset lr, 32
++
++        /* Adjust N so that the decrement instruction can also test for
++         * inner loop termination. We want it to stop when there are
++         * (prefetch_distance+1) complete blocks to go. */
++        sub     N, N, #(prefetch_distance+2)*32
++        preload_leading_step1  backwards, DAT0, S
++ .if backwards
++        /* Bug in GAS: it accepts, but mis-assembles the instruction
++         * ands    DAT2, D, #60, 2
++         * which sets DAT2 to the number of leading bytes until destination is aligned and also clears C (sets borrow)
++         */
++        .word   0xE210513C
++        beq     154f
++ .else
++        ands    DAT2, D, #15
++        beq     154f
++        rsb     DAT2, DAT2, #16 /* number of leading bytes until destination aligned */
++ .endif
++        preload_leading_step2  backwards, DAT0, S, DAT2, OFF
++        memcpy_leading_15bytes backwards, 1
++154:    /* Destination now 16-byte aligned; we have at least one prefetch as well as at least one 16-byte output block */
++        /* Prefetch offset is best selected such that it lies in the first 8 of each 32 bytes - but it's just as easy to aim for the first one */
++ .if backwards
++        rsb     OFF, S, #3
++        and     OFF, OFF, #28
++        sub     OFF, OFF, #32*(prefetch_distance+1)
++ .else
++        and     OFF, S, #28
++        rsb     OFF, OFF, #32*prefetch_distance
++ .endif
++        movs    DAT0, S, lsl #31
++        bhi     157f
++        bcs     156f
++        bmi     155f
++        memcpy_long_inner_loop  backwards, 0
++155:    memcpy_long_inner_loop  backwards, 1
++156:    memcpy_long_inner_loop  backwards, 2
++157:    memcpy_long_inner_loop  backwards, 3
++
++        .cfi_def_cfa_offset 16
++        .cfi_rel_offset D, 0
++        .cfi_rel_offset DAT1, 4
++        .cfi_rel_offset DAT2, 8
++        .cfi_same_value DAT3
++        .cfi_same_value DAT4
++        .cfi_same_value DAT5
++        .cfi_same_value DAT6
++        .cfi_same_value DAT7
++        .cfi_rel_offset lr, 12
++
++160:    /* Medium case */
++        preload_all  backwards, 0, 0, S, N, DAT2, OFF
++        sub     N, N, #16     /* simplifies inner loop termination */
++ .if backwards
++        ands    DAT2, D, #15
++        beq     164f
++ .else
++        ands    DAT2, D, #15
++        beq     164f
++        rsb     DAT2, DAT2, #16
++ .endif
++        memcpy_leading_15bytes backwards, align
++164:    /* Destination now 16-byte aligned; we have at least one 16-byte output block */
++        tst     S, #3
++        bne     140f
++        memcpy_medium_inner_loop  backwards, 0
++140:    memcpy_medium_inner_loop  backwards, 1
++
++170:    /* Short case, less than 31 bytes, so no guarantee of at least one 16-byte block */
++        teq     N, #0
++        beq     199f
++        preload_all  backwards, 1, 0, S, N, DAT2, LAST
++        tst     D, #3
++        beq     174f
++172:    subs    N, N, #1
++        blo     199f
++ .if backwards
++        ldrb    DAT0, [S, #-1]!
++        strb    DAT0, [D, #-1]!
++ .else
++        ldrb    DAT0, [S], #1
++        strb    DAT0, [D], #1
++ .endif
++        tst     D, #3
++        bne     172b
++174:    /* Destination now 4-byte aligned; we have 0 or more output bytes to go */
++        tst     S, #3
++        bne     140f
++        memcpy_short_inner_loop  backwards, 0
++140:    memcpy_short_inner_loop  backwards, 1
++
++        .cfi_endproc
++
++        .unreq  D
++        .unreq  S
++        .unreq  N
++        .unreq  DAT0
++        .unreq  DAT1
++        .unreq  DAT2
++        .unreq  DAT3
++        .unreq  DAT4
++        .unreq  DAT5
++        .unreq  DAT6
++        .unreq  DAT7
++        .unreq  LAST
++        .unreq  OFF
++.endm
+--- /dev/null
++++ b/arch/arm/lib/memmove_rpi.S
+@@ -0,0 +1,61 @@
++/*
++Copyright (c) 2013, Raspberry Pi Foundation
++Copyright (c) 2013, RISC OS Open Ltd
++All rights reserved.
++
++Redistribution and use in source and binary forms, with or without
++modification, are permitted provided that the following conditions are met:
++    * Redistributions of source code must retain the above copyright
++      notice, this list of conditions and the following disclaimer.
++    * Redistributions in binary form must reproduce the above copyright
++      notice, this list of conditions and the following disclaimer in the
++      documentation and/or other materials provided with the distribution.
++    * Neither the name of the copyright holder nor the
++      names of its contributors may be used to endorse or promote products
++      derived from this software without specific prior written permission.
++
++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
++DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++*/
++
++#include <linux/linkage.h>
++#include "arm-mem.h"
++#include "memcpymove.h"
++
++/* Prevent the stack from becoming executable */
++#if defined(__linux__) && defined(__ELF__)
++.section .note.GNU-stack,"",%progbits
++#endif
++
++    .text
++    .arch armv6
++    .object_arch armv4
++    .arm
++    .altmacro
++    .p2align 2
++
++/*
++ * void *memmove(void *s1, const void *s2, size_t n);
++ * On entry:
++ * a1 = pointer to destination
++ * a2 = pointer to source
++ * a3 = number of bytes to copy
++ * On exit:
++ * a1 preserved
++ */
++
++.set prefetch_distance, 3
++
++ENTRY(memmove)
++        cmp     a2, a1
++        bpl     memcpy  /* pl works even over -1 - 0 and 0x7fffffff - 0x80000000 boundaries */
++        memcpy  1
++ENDPROC(memmove)
+--- /dev/null
++++ b/arch/arm/lib/memset_rpi.S
+@@ -0,0 +1,128 @@
++/*
++Copyright (c) 2013, Raspberry Pi Foundation
++Copyright (c) 2013, RISC OS Open Ltd
++All rights reserved.
++
++Redistribution and use in source and binary forms, with or without
++modification, are permitted provided that the following conditions are met:
++    * Redistributions of source code must retain the above copyright
++      notice, this list of conditions and the following disclaimer.
++    * Redistributions in binary form must reproduce the above copyright
++      notice, this list of conditions and the following disclaimer in the
++      documentation and/or other materials provided with the distribution.
++    * Neither the name of the copyright holder nor the
++      names of its contributors may be used to endorse or promote products
++      derived from this software without specific prior written permission.
++
++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
++ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
++WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
++DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
++(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
++LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++*/
++
++#include <linux/linkage.h>
++#include "arm-mem.h"
++
++/* Prevent the stack from becoming executable */
++#if defined(__linux__) && defined(__ELF__)
++.section .note.GNU-stack,"",%progbits
++#endif
++
++    .text
++    .arch armv6
++    .object_arch armv4
++    .arm
++    .altmacro
++    .p2align 2
++
++/*
++ *  void *memset(void *s, int c, size_t n);
++ *  On entry:
++ *  a1 = pointer to buffer to fill
++ *  a2 = byte pattern to fill with (caller-narrowed)
++ *  a3 = number of bytes to fill
++ *  On exit:
++ *  a1 preserved
++ */
++ENTRY(mmioset)
++ENTRY(memset)
++ENTRY(__memset32)
++ENTRY(__memset64)
++
++        S       .req    a1
++        DAT0    .req    a2
++        N       .req    a3
++        DAT1    .req    a4
++        DAT2    .req    ip
++        DAT3    .req    lr
++
++        orr     DAT0, DAT0, DAT0, lsl #8
++        push    {S, lr}
++        orr     DAT0, DAT0, DAT0, lsl #16
++        mov     DAT1, DAT0
++
++        /* See if we're guaranteed to have at least one 16-byte aligned 16-byte write */
++        cmp     N, #31
++        blo     170f
++
++161:    sub     N, N, #16     /* simplifies inner loop termination */
++        /* Leading words and bytes */
++        tst     S, #15
++        beq     164f
++        rsb     DAT3, S, #0   /* bits 0-3 = number of leading bytes until aligned */
++        movs    DAT2, DAT3, lsl #31
++        submi   N, N, #1
++        strmib  DAT0, [S], #1
++        subcs   N, N, #2
++        strcsh  DAT0, [S], #2
++        movs    DAT2, DAT3, lsl #29
++        submi   N, N, #4
++        strmi   DAT0, [S], #4
++        subcs   N, N, #8
++        stmcsia S!, {DAT0, DAT1}
++164:    /* Delayed set up of DAT2 and DAT3 so we could use them as scratch registers above */
++        mov     DAT2, DAT0
++        mov     DAT3, DAT0
++        /* Now the inner loop of 16-byte stores */
++165:    stmia   S!, {DAT0, DAT1, DAT2, DAT3}
++        subs    N, N, #16
++        bhs     165b
++166:    /* Trailing words and bytes */
++        movs    N, N, lsl #29
++        stmcsia S!, {DAT0, DAT1}
++        strmi   DAT0, [S], #4
++        movs    N, N, lsl #2
++        strcsh  DAT0, [S], #2
++        strmib  DAT0, [S]
++199:    pop     {S, pc}
++
++170:    /* Short case */
++        mov     DAT2, DAT0
++        mov     DAT3, DAT0
++        tst     S, #3
++        beq     174f
++172:    subs    N, N, #1
++        blo     199b
++        strb    DAT0, [S], #1
++        tst     S, #3
++        bne     172b
++174:    tst     N, #16
++        stmneia S!, {DAT0, DAT1, DAT2, DAT3}
++        b       166b
++
++        .unreq  S
++        .unreq  DAT0
++        .unreq  N
++        .unreq  DAT1
++        .unreq  DAT2
++        .unreq  DAT3
++ENDPROC(__memset64)
++ENDPROC(__memset32)
++ENDPROC(memset)
++ENDPROC(mmioset)
+--- a/arch/arm/lib/uaccess_with_memcpy.c
++++ b/arch/arm/lib/uaccess_with_memcpy.c
+@@ -19,6 +19,14 @@
+ #include <asm/current.h>
+ #include <asm/page.h>
+ 
++#ifndef COPY_FROM_USER_THRESHOLD
++#define COPY_FROM_USER_THRESHOLD 64
++#endif
++
++#ifndef COPY_TO_USER_THRESHOLD
++#define COPY_TO_USER_THRESHOLD 64
++#endif
++
+ static int
+ pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
+ {
+@@ -43,7 +51,7 @@ pin_page_for_write(const void __user *_a
+ 		return 0;
+ 
+ 	pmd = pmd_offset(pud, addr);
+-	if (unlikely(pmd_none(*pmd)))
++	if (unlikely(pmd_none(*pmd) || pmd_bad(*pmd)))
+ 		return 0;
+ 
+ 	/*
+@@ -86,7 +94,46 @@ pin_page_for_write(const void __user *_a
+ 	return 1;
+ }
+ 
+-static unsigned long noinline
++static int
++pin_page_for_read(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
++{
++	unsigned long addr = (unsigned long)_addr;
++	pgd_t *pgd;
++	p4d_t *p4d;
++	pmd_t *pmd;
++	pte_t *pte;
++	pud_t *pud;
++	spinlock_t *ptl;
++
++	pgd = pgd_offset(current->mm, addr);
++	if (unlikely(pgd_none(*pgd) || pgd_bad(*pgd)))
++		return 0;
++
++	p4d = p4d_offset(pgd, addr);
++	if (unlikely(p4d_none(*p4d) || p4d_bad(*p4d)))
++		return 0;
++
++	pud = pud_offset(p4d, addr);
++	if (unlikely(pud_none(*pud) || pud_bad(*pud)))
++		return 0;
++
++	pmd = pmd_offset(pud, addr);
++	if (unlikely(pmd_none(*pmd) || pmd_bad(*pmd)))
++		return 0;
++
++	pte = pte_offset_map_lock(current->mm, pmd, addr, &ptl);
++	if (unlikely(!pte_present(*pte) || !pte_young(*pte))) {
++		pte_unmap_unlock(pte, ptl);
++		return 0;
++	}
++
++	*ptep = pte;
++	*ptlp = ptl;
++
++	return 1;
++}
++
++unsigned long noinline
+ __copy_to_user_memcpy(void __user *to, const void *from, unsigned long n)
+ {
+ 	unsigned long ua_flags;
+@@ -139,6 +186,57 @@ out:
+ 	return n;
+ }
+ 
++unsigned long noinline
++__copy_from_user_memcpy(void *to, const void __user *from, unsigned long n)
++{
++	unsigned long ua_flags;
++	int atomic;
++
++	if (unlikely(uaccess_kernel())) {
++		memcpy(to, (const void *)from, n);
++		return 0;
++	}
++
++	/* the mmap semaphore is taken only if not in an atomic context */
++	atomic = in_atomic();
++
++	if (!atomic)
++		mmap_read_lock(current->mm);
++	while (n) {
++		pte_t *pte;
++		spinlock_t *ptl;
++		int tocopy;
++
++		while (!pin_page_for_read(from, &pte, &ptl)) {
++			char temp;
++			if (!atomic)
++				mmap_read_unlock(current->mm);
++			if (__get_user(temp, (char __user *)from))
++				goto out;
++			if (!atomic)
++				mmap_read_lock(current->mm);
++		}
++
++		tocopy = (~(unsigned long)from & ~PAGE_MASK) + 1;
++		if (tocopy > n)
++			tocopy = n;
++
++		ua_flags = uaccess_save_and_enable();
++		memcpy(to, (const void *)from, tocopy);
++		uaccess_restore(ua_flags);
++		to += tocopy;
++		from += tocopy;
++		n -= tocopy;
++
++		pte_unmap_unlock(pte, ptl);
++	}
++	if (!atomic)
++		mmap_read_unlock(current->mm);
++
++out:
++	return n;
++}
++
+ unsigned long
+ arm_copy_to_user(void __user *to, const void *from, unsigned long n)
+ {
+@@ -149,7 +247,7 @@ arm_copy_to_user(void __user *to, const
+ 	 * With frame pointer disabled, tail call optimization kicks in
+ 	 * as well making this test almost invisible.
+ 	 */
+-	if (n < 64) {
++	if (n < COPY_TO_USER_THRESHOLD) {
+ 		unsigned long ua_flags = uaccess_save_and_enable();
+ 		n = __copy_to_user_std(to, from, n);
+ 		uaccess_restore(ua_flags);
+@@ -159,6 +257,32 @@ arm_copy_to_user(void __user *to, const
+ 	}
+ 	return n;
+ }
++
++unsigned long __must_check
++arm_copy_from_user(void *to, const void __user *from, unsigned long n)
++{
++#ifdef CONFIG_BCM2835_FAST_MEMCPY
++	/*
++	 * This test is stubbed out of the main function above to keep
++	 * the overhead for small copies low by avoiding a large
++	 * register dump on the stack just to reload them right away.
++	 * With frame pointer disabled, tail call optimization kicks in
++	 * as well making this test almost invisible.
++	 */
++	if (n < COPY_TO_USER_THRESHOLD) {
++		unsigned long ua_flags = uaccess_save_and_enable();
++		n = __copy_from_user_std(to, from, n);
++		uaccess_restore(ua_flags);
++	} else {
++		n = __copy_from_user_memcpy(to, from, n);
++	}
++#else
++	unsigned long ua_flags = uaccess_save_and_enable();
++	n = __copy_from_user_std(to, from, n);
++	uaccess_restore(ua_flags);
++#endif
++	return n;
++}
+ 	
+ static unsigned long noinline
+ __clear_user_memset(void __user *addr, unsigned long n)
+--- a/arch/arm/mach-bcm/Kconfig
++++ b/arch/arm/mach-bcm/Kconfig
+@@ -185,6 +185,13 @@ config ARCH_BCM_53573
+ 	  The base chip is BCM53573 and there are some packaging modifications
+ 	  like BCM47189 and BCM47452.
+ 
++config BCM2835_FAST_MEMCPY
++	bool "Enable optimized __copy_to_user and __copy_from_user"
++	depends on ARCH_BCM2835 && ARCH_MULTI_V6
++	default y
++	help
++	  Optimized versions of __copy_to_user and __copy_from_user for Pi1.
++
+ config ARCH_BCM_63XX
+ 	bool "Broadcom BCM63xx DSL SoC"
+ 	depends on ARCH_MULTI_V7
diff --git a/target/linux/bcm27xx/patches-5.15/950-0082-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch b/target/linux/bcm27xx/patches-5.15/950-0082-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch
new file mode 100644
index 0000000000..260da2155b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0082-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch
@@ -0,0 +1,35 @@
+From 0d425f483f0a6c22344341d693f1845f9c6b68b0 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 25 Jun 2015 12:16:11 +0100
+Subject: [PATCH] gpio-poweroff: Allow it to work on Raspberry Pi
+
+The Raspberry Pi firmware manages the power-down and reboot
+process. To do this it installs a pm_power_off handler, causing
+the gpio-poweroff module to abort the probe function.
+
+This patch introduces a "force" DT property that overrides that
+behaviour, and also adds a DT overlay to enable and control it.
+
+Note that running in an active-low configuration (DT parameter
+"active_low") requires a custom dt-blob.bin and probably won't
+allow a reboot without switching off, so an external inversion
+of the trigger signal may be preferable.
+---
+ drivers/power/reset/gpio-poweroff.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/power/reset/gpio-poweroff.c
++++ b/drivers/power/reset/gpio-poweroff.c
+@@ -50,9 +50,11 @@ static int gpio_poweroff_probe(struct pl
+ {
+ 	bool input = false;
+ 	enum gpiod_flags flags;
++	bool force = false;
+ 
+ 	/* If a pm_power_off function has already been added, leave it alone */
+-	if (pm_power_off != NULL) {
++	force = of_property_read_bool(pdev->dev.of_node, "force");
++	if (!force && (pm_power_off != NULL)) {
+ 		dev_err(&pdev->dev,
+ 			"%s: pm_power_off function already registered\n",
+ 		       __func__);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0083-mfd-Add-Raspberry-Pi-Sense-HAT-core-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0083-mfd-Add-Raspberry-Pi-Sense-HAT-core-driver.patch
new file mode 100644
index 0000000000..1fcd072780
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0083-mfd-Add-Raspberry-Pi-Sense-HAT-core-driver.patch
@@ -0,0 +1,851 @@
+From 55156257cde6621241755a89527280404c488da1 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <pelwell@users.noreply.github.com>
+Date: Tue, 14 Jul 2015 14:32:47 +0100
+Subject: [PATCH] mfd: Add Raspberry Pi Sense HAT core driver
+
+mfd: Add rpi_sense_core of compatible string
+---
+ drivers/input/joystick/Kconfig           |   8 +
+ drivers/input/joystick/Makefile          |   1 +
+ drivers/input/joystick/rpisense-js.c     | 153 ++++++++++++
+ drivers/mfd/Kconfig                      |   8 +
+ drivers/mfd/Makefile                     |   1 +
+ drivers/mfd/rpisense-core.c              | 165 +++++++++++++
+ drivers/video/fbdev/Kconfig              |  13 +
+ drivers/video/fbdev/Makefile             |   1 +
+ drivers/video/fbdev/rpisense-fb.c        | 293 +++++++++++++++++++++++
+ include/linux/mfd/rpisense/core.h        |  47 ++++
+ include/linux/mfd/rpisense/framebuffer.h |  32 +++
+ include/linux/mfd/rpisense/joystick.h    |  35 +++
+ 12 files changed, 757 insertions(+)
+ create mode 100644 drivers/input/joystick/rpisense-js.c
+ create mode 100644 drivers/mfd/rpisense-core.c
+ create mode 100644 drivers/video/fbdev/rpisense-fb.c
+ create mode 100644 include/linux/mfd/rpisense/core.h
+ create mode 100644 include/linux/mfd/rpisense/framebuffer.h
+ create mode 100644 include/linux/mfd/rpisense/joystick.h
+
+--- a/drivers/input/joystick/Kconfig
++++ b/drivers/input/joystick/Kconfig
+@@ -399,4 +399,12 @@ config JOYSTICK_N64
+ 	  Say Y here if you want enable support for the four
+ 	  built-in controller ports on the Nintendo 64 console.
+ 
++config JOYSTICK_RPISENSE
++	tristate "Raspberry Pi Sense HAT joystick"
++	depends on GPIOLIB && INPUT
++	select MFD_RPISENSE_CORE
++
++	help
++	  This is the joystick driver for the Raspberry Pi Sense HAT
++
+ endif
+--- a/drivers/input/joystick/Makefile
++++ b/drivers/input/joystick/Makefile
+@@ -39,3 +39,4 @@ obj-$(CONFIG_JOYSTICK_WARRIOR)		+= warri
+ obj-$(CONFIG_JOYSTICK_WALKERA0701)	+= walkera0701.o
+ obj-$(CONFIG_JOYSTICK_XPAD)		+= xpad.o
+ obj-$(CONFIG_JOYSTICK_ZHENHUA)		+= zhenhua.o
++obj-$(CONFIG_JOYSTICK_RPISENSE)		+= rpisense-js.o
+--- /dev/null
++++ b/drivers/input/joystick/rpisense-js.c
+@@ -0,0 +1,153 @@
++/*
++ * Raspberry Pi Sense HAT joystick driver
++ * http://raspberrypi.org
++ *
++ * Copyright (C) 2015 Raspberry Pi
++ *
++ * Author: Serge Schneider
++ *
++ *  This program is free software; you can redistribute  it and/or modify it
++ *  under  the terms of  the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the  License, or (at your
++ *  option) any later version.
++ *
++ */
++
++#include <linux/module.h>
++
++#include <linux/mfd/rpisense/joystick.h>
++#include <linux/mfd/rpisense/core.h>
++
++static struct rpisense *rpisense;
++static unsigned char keymap[5] = {KEY_DOWN, KEY_RIGHT, KEY_UP, KEY_ENTER, KEY_LEFT,};
++
++static void keys_work_fn(struct work_struct *work)
++{
++	int i;
++	static s32 prev_keys;
++	struct rpisense_js *rpisense_js = &rpisense->joystick;
++	s32 keys = rpisense_reg_read(rpisense, RPISENSE_KEYS);
++	s32 changes = keys ^ prev_keys;
++
++	prev_keys = keys;
++	for (i = 0; i < 5; i++) {
++		if (changes & 1) {
++			input_report_key(rpisense_js->keys_dev,
++					 keymap[i], keys & 1);
++		}
++		changes >>= 1;
++		keys >>= 1;
++	}
++	input_sync(rpisense_js->keys_dev);
++}
++
++static irqreturn_t keys_irq_handler(int irq, void *pdev)
++{
++	struct rpisense_js *rpisense_js = &rpisense->joystick;
++
++	schedule_work(&rpisense_js->keys_work_s);
++	return IRQ_HANDLED;
++}
++
++static int rpisense_js_probe(struct platform_device *pdev)
++{
++	int ret;
++	int i;
++	struct rpisense_js *rpisense_js;
++
++	rpisense = rpisense_get_dev();
++	rpisense_js = &rpisense->joystick;
++
++	INIT_WORK(&rpisense_js->keys_work_s, keys_work_fn);
++
++	rpisense_js->keys_dev = input_allocate_device();
++	if (!rpisense_js->keys_dev) {
++		dev_err(&pdev->dev, "Could not allocate input device.\n");
++		return -ENOMEM;
++	}
++
++	rpisense_js->keys_dev->evbit[0] = BIT_MASK(EV_KEY);
++	for (i = 0; i < ARRAY_SIZE(keymap); i++) {
++		set_bit(keymap[i],
++			rpisense_js->keys_dev->keybit);
++	}
++
++	rpisense_js->keys_dev->name = "Raspberry Pi Sense HAT Joystick";
++	rpisense_js->keys_dev->phys = "rpi-sense-joy/input0";
++	rpisense_js->keys_dev->id.bustype = BUS_I2C;
++	rpisense_js->keys_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
++	rpisense_js->keys_dev->keycode = keymap;
++	rpisense_js->keys_dev->keycodesize = sizeof(unsigned char);
++	rpisense_js->keys_dev->keycodemax = ARRAY_SIZE(keymap);
++
++	ret = input_register_device(rpisense_js->keys_dev);
++	if (ret) {
++		dev_err(&pdev->dev, "Could not register input device.\n");
++		goto err_keys_alloc;
++	}
++
++	ret = gpiod_direction_input(rpisense_js->keys_desc);
++	if (ret) {
++		dev_err(&pdev->dev, "Could not set keys-int direction.\n");
++		goto err_keys_reg;
++	}
++
++	rpisense_js->keys_irq = gpiod_to_irq(rpisense_js->keys_desc);
++	if (rpisense_js->keys_irq < 0) {
++		dev_err(&pdev->dev, "Could not determine keys-int IRQ.\n");
++		ret = rpisense_js->keys_irq;
++		goto err_keys_reg;
++	}
++
++	ret = devm_request_irq(&pdev->dev, rpisense_js->keys_irq,
++			       keys_irq_handler, IRQF_TRIGGER_RISING,
++			       "keys", &pdev->dev);
++	if (ret) {
++		dev_err(&pdev->dev, "IRQ request failed.\n");
++		goto err_keys_reg;
++	}
++	return 0;
++err_keys_reg:
++	input_unregister_device(rpisense_js->keys_dev);
++err_keys_alloc:
++	input_free_device(rpisense_js->keys_dev);
++	return ret;
++}
++
++static int rpisense_js_remove(struct platform_device *pdev)
++{
++	struct rpisense_js *rpisense_js = &rpisense->joystick;
++
++	input_unregister_device(rpisense_js->keys_dev);
++	input_free_device(rpisense_js->keys_dev);
++	return 0;
++}
++
++#ifdef CONFIG_OF
++static const struct of_device_id rpisense_js_id[] = {
++	{ .compatible = "rpi,rpi-sense-js" },
++	{ },
++};
++MODULE_DEVICE_TABLE(of, rpisense_js_id);
++#endif
++
++static struct platform_device_id rpisense_js_device_id[] = {
++	{ .name = "rpi-sense-js" },
++	{ },
++};
++MODULE_DEVICE_TABLE(platform, rpisense_js_device_id);
++
++static struct platform_driver rpisense_js_driver = {
++	.probe = rpisense_js_probe,
++	.remove = rpisense_js_remove,
++	.driver = {
++		.name = "rpi-sense-js",
++		.owner = THIS_MODULE,
++	},
++};
++
++module_platform_driver(rpisense_js_driver);
++
++MODULE_DESCRIPTION("Raspberry Pi Sense HAT joystick driver");
++MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
++MODULE_LICENSE("GPL");
+--- a/drivers/mfd/Kconfig
++++ b/drivers/mfd/Kconfig
+@@ -11,6 +11,14 @@ config MFD_CORE
+ 	select IRQ_DOMAIN
+ 	default n
+ 
++config MFD_RPISENSE_CORE
++	tristate "Raspberry Pi Sense HAT core functions"
++	depends on I2C
++	select MFD_CORE
++	help
++	  This is the core driver for the Raspberry Pi Sense HAT. This provides
++	  the necessary functions to communicate with the hardware.
++
+ config MFD_CS5535
+ 	tristate "AMD CS5535 and CS5536 southbridge core functions"
+ 	select MFD_CORE
+--- a/drivers/mfd/Makefile
++++ b/drivers/mfd/Makefile
+@@ -266,6 +266,7 @@ obj-$(CONFIG_MFD_STMFX) 	+= stmfx.o
+ obj-$(CONFIG_MFD_KHADAS_MCU) 	+= khadas-mcu.o
+ obj-$(CONFIG_MFD_ACER_A500_EC)	+= acer-ec-a500.o
+ obj-$(CONFIG_MFD_QCOM_PM8008)	+= qcom-pm8008.o
++obj-$(CONFIG_MFD_RPISENSE_CORE)	+= rpisense-core.o
+ 
+ obj-$(CONFIG_SGI_MFD_IOC3)	+= ioc3.o
+ obj-$(CONFIG_MFD_SIMPLE_MFD_I2C)	+= simple-mfd-i2c.o
+--- /dev/null
++++ b/drivers/mfd/rpisense-core.c
+@@ -0,0 +1,165 @@
++/*
++ * Raspberry Pi Sense HAT core driver
++ * http://raspberrypi.org
++ *
++ * Copyright (C) 2015 Raspberry Pi
++ *
++ * Author: Serge Schneider
++ *
++ *  This program is free software; you can redistribute  it and/or modify it
++ *  under  the terms of  the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the  License, or (at your
++ *  option) any later version.
++ *
++ *  This driver is based on wm8350 implementation.
++ */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/i2c.h>
++#include <linux/platform_device.h>
++#include <linux/mfd/rpisense/core.h>
++#include <linux/slab.h>
++
++static struct rpisense *rpisense;
++
++static void rpisense_client_dev_register(struct rpisense *rpisense,
++					 const char *name,
++					 struct platform_device **pdev)
++{
++	int ret;
++
++	*pdev = platform_device_alloc(name, -1);
++	if (*pdev == NULL) {
++		dev_err(rpisense->dev, "Failed to allocate %s\n", name);
++		return;
++	}
++
++	(*pdev)->dev.parent = rpisense->dev;
++	platform_set_drvdata(*pdev, rpisense);
++	ret = platform_device_add(*pdev);
++	if (ret != 0) {
++		dev_err(rpisense->dev, "Failed to register %s: %d\n",
++			name, ret);
++		platform_device_put(*pdev);
++		*pdev = NULL;
++	}
++}
++
++static int rpisense_probe(struct i2c_client *i2c,
++			       const struct i2c_device_id *id)
++{
++	int ret;
++	struct rpisense_js *rpisense_js;
++
++	rpisense = devm_kzalloc(&i2c->dev, sizeof(struct rpisense), GFP_KERNEL);
++	if (rpisense == NULL)
++		return -ENOMEM;
++
++	i2c_set_clientdata(i2c, rpisense);
++	rpisense->dev = &i2c->dev;
++	rpisense->i2c_client = i2c;
++
++	ret = rpisense_reg_read(rpisense, RPISENSE_WAI);
++	if (ret > 0) {
++		if (ret != 's')
++			return -EINVAL;
++	} else {
++		return ret;
++	}
++	ret = rpisense_reg_read(rpisense, RPISENSE_VER);
++	if (ret < 0)
++		return ret;
++
++	dev_info(rpisense->dev,
++		 "Raspberry Pi Sense HAT firmware version %i\n", ret);
++
++	rpisense_js = &rpisense->joystick;
++	rpisense_js->keys_desc = devm_gpiod_get(&i2c->dev,
++						"keys-int", GPIOD_IN);
++	if (IS_ERR(rpisense_js->keys_desc)) {
++		dev_warn(&i2c->dev, "Failed to get keys-int descriptor.\n");
++		rpisense_js->keys_desc = gpio_to_desc(23);
++		if (rpisense_js->keys_desc == NULL) {
++			dev_err(&i2c->dev, "GPIO23 fallback failed.\n");
++			return PTR_ERR(rpisense_js->keys_desc);
++		}
++	}
++	rpisense_client_dev_register(rpisense, "rpi-sense-js",
++				     &(rpisense->joystick.pdev));
++	rpisense_client_dev_register(rpisense, "rpi-sense-fb",
++				     &(rpisense->framebuffer.pdev));
++
++	return 0;
++}
++
++static int rpisense_remove(struct i2c_client *i2c)
++{
++	struct rpisense *rpisense = i2c_get_clientdata(i2c);
++
++	platform_device_unregister(rpisense->joystick.pdev);
++	return 0;
++}
++
++struct rpisense *rpisense_get_dev(void)
++{
++	return rpisense;
++}
++EXPORT_SYMBOL_GPL(rpisense_get_dev);
++
++s32 rpisense_reg_read(struct rpisense *rpisense, int reg)
++{
++	int ret = i2c_smbus_read_byte_data(rpisense->i2c_client, reg);
++
++	if (ret < 0)
++		dev_err(rpisense->dev, "Read from reg %d failed\n", reg);
++	/* Due to the BCM270x I2C clock stretching bug, some values
++	 * may have MSB set. Clear it to avoid incorrect values.
++	 * */
++	return ret & 0x7F;
++}
++EXPORT_SYMBOL_GPL(rpisense_reg_read);
++
++int rpisense_block_write(struct rpisense *rpisense, const char *buf, int count)
++{
++	int ret = i2c_master_send(rpisense->i2c_client, buf, count);
++
++	if (ret < 0)
++		dev_err(rpisense->dev, "Block write failed\n");
++	return ret;
++}
++EXPORT_SYMBOL_GPL(rpisense_block_write);
++
++static const struct i2c_device_id rpisense_i2c_id[] = {
++	{ "rpi-sense", 0 },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, rpisense_i2c_id);
++
++#ifdef CONFIG_OF
++static const struct of_device_id rpisense_core_id[] = {
++	{ .compatible = "rpi,rpi-sense" },
++	{ },
++};
++MODULE_DEVICE_TABLE(of, rpisense_core_id);
++#endif
++
++
++static struct i2c_driver rpisense_driver = {
++	.driver = {
++		   .name = "rpi-sense",
++		   .owner = THIS_MODULE,
++	},
++	.probe = rpisense_probe,
++	.remove = rpisense_remove,
++	.id_table = rpisense_i2c_id,
++};
++
++module_i2c_driver(rpisense_driver);
++
++MODULE_DESCRIPTION("Raspberry Pi Sense HAT core driver");
++MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
++MODULE_LICENSE("GPL");
++
+--- a/drivers/video/fbdev/Kconfig
++++ b/drivers/video/fbdev/Kconfig
+@@ -2252,6 +2252,19 @@ config FB_SM712
+ 	  called sm712fb. If you want to compile it as a module, say M
+ 	  here and read <file:Documentation/kbuild/modules.rst>.
+ 
++config FB_RPISENSE
++	tristate "Raspberry Pi Sense HAT framebuffer"
++	depends on FB
++	select MFD_RPISENSE_CORE
++	select FB_SYS_FOPS
++	select FB_SYS_FILLRECT
++	select FB_SYS_COPYAREA
++	select FB_SYS_IMAGEBLIT
++	select FB_DEFERRED_IO
++
++	help
++	  This is the framebuffer driver for the Raspberry Pi Sense HAT
++
+ source "drivers/video/fbdev/omap/Kconfig"
+ source "drivers/video/fbdev/omap2/Kconfig"
+ source "drivers/video/fbdev/mmp/Kconfig"
+--- a/drivers/video/fbdev/Makefile
++++ b/drivers/video/fbdev/Makefile
+@@ -130,6 +130,7 @@ obj-$(CONFIG_FB_MX3)		  += mx3fb.o
+ obj-$(CONFIG_FB_DA8XX)		  += da8xx-fb.o
+ obj-$(CONFIG_FB_SSD1307)	  += ssd1307fb.o
+ obj-$(CONFIG_FB_SIMPLE)           += simplefb.o
++obj-$(CONFIG_FB_RPISENSE)	  += rpisense-fb.o
+ 
+ # the test framebuffer is last
+ obj-$(CONFIG_FB_VIRTUAL)          += vfb.o
+--- /dev/null
++++ b/drivers/video/fbdev/rpisense-fb.c
+@@ -0,0 +1,293 @@
++/*
++ * Raspberry Pi Sense HAT framebuffer driver
++ * http://raspberrypi.org
++ *
++ * Copyright (C) 2015 Raspberry Pi
++ *
++ * Author: Serge Schneider
++ *
++ *  This program is free software; you can redistribute  it and/or modify it
++ *  under  the terms of  the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the  License, or (at your
++ *  option) any later version.
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/errno.h>
++#include <linux/string.h>
++#include <linux/mm.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/delay.h>
++#include <linux/fb.h>
++#include <linux/init.h>
++
++#include <linux/mfd/rpisense/framebuffer.h>
++#include <linux/mfd/rpisense/core.h>
++
++static bool lowlight;
++module_param(lowlight, bool, 0);
++MODULE_PARM_DESC(lowlight, "Reduce LED matrix brightness to one third");
++
++static struct rpisense *rpisense;
++
++struct rpisense_fb_param {
++	char __iomem *vmem;
++	u8 *vmem_work;
++	u32 vmemsize;
++	u8 *gamma;
++};
++
++static u8 gamma_default[32] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
++			       0x02, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x07,
++			       0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0E, 0x0F, 0x11,
++			       0x12, 0x14, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F,};
++
++static u8 gamma_low[32] = {0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
++			   0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02,
++			   0x03, 0x03, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06,
++			   0x06, 0x07, 0x07, 0x08, 0x08, 0x09, 0x0A, 0x0A,};
++
++static u8 gamma_user[32];
++
++static struct rpisense_fb_param rpisense_fb_param = {
++	.vmem = NULL,
++	.vmemsize = 128,
++	.gamma = gamma_default,
++};
++
++static struct fb_deferred_io rpisense_fb_defio;
++
++static struct fb_fix_screeninfo rpisense_fb_fix = {
++	.id =		"RPi-Sense FB",
++	.type =		FB_TYPE_PACKED_PIXELS,
++	.visual =	FB_VISUAL_TRUECOLOR,
++	.xpanstep =	0,
++	.ypanstep =	0,
++	.ywrapstep =	0,
++	.accel =	FB_ACCEL_NONE,
++	.line_length =	16,
++};
++
++static struct fb_var_screeninfo rpisense_fb_var = {
++	.xres		= 8,
++	.yres		= 8,
++	.xres_virtual	= 8,
++	.yres_virtual	= 8,
++	.bits_per_pixel = 16,
++	.red		= {11, 5, 0},
++	.green		= {5, 6, 0},
++	.blue		= {0, 5, 0},
++};
++
++static ssize_t rpisense_fb_write(struct fb_info *info,
++				 const char __user *buf, size_t count,
++				 loff_t *ppos)
++{
++	ssize_t res = fb_sys_write(info, buf, count, ppos);
++
++	schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
++	return res;
++}
++
++static void rpisense_fb_fillrect(struct fb_info *info,
++				 const struct fb_fillrect *rect)
++{
++	sys_fillrect(info, rect);
++	schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
++}
++
++static void rpisense_fb_copyarea(struct fb_info *info,
++				 const struct fb_copyarea *area)
++{
++	sys_copyarea(info, area);
++	schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
++}
++
++static void rpisense_fb_imageblit(struct fb_info *info,
++				  const struct fb_image *image)
++{
++	sys_imageblit(info, image);
++	schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
++}
++
++static void rpisense_fb_deferred_io(struct fb_info *info,
++				struct list_head *pagelist)
++{
++	int i;
++	int j;
++	u8 *vmem_work = rpisense_fb_param.vmem_work;
++	u16 *mem = (u16 *)rpisense_fb_param.vmem;
++	u8 *gamma = rpisense_fb_param.gamma;
++
++	vmem_work[0] = 0;
++	for (j = 0; j < 8; j++) {
++		for (i = 0; i < 8; i++) {
++			vmem_work[(j * 24) + i + 1] =
++				gamma[(mem[(j * 8) + i] >> 11) & 0x1F];
++			vmem_work[(j * 24) + (i + 8) + 1] =
++				gamma[(mem[(j * 8) + i] >> 6) & 0x1F];
++			vmem_work[(j * 24) + (i + 16) + 1] =
++				gamma[(mem[(j * 8) + i]) & 0x1F];
++		}
++	}
++	rpisense_block_write(rpisense, vmem_work, 193);
++}
++
++static struct fb_deferred_io rpisense_fb_defio = {
++	.delay		= HZ/100,
++	.deferred_io	= rpisense_fb_deferred_io,
++};
++
++static int rpisense_fb_ioctl(struct fb_info *info, unsigned int cmd,
++			     unsigned long arg)
++{
++	switch (cmd) {
++	case SENSEFB_FBIOGET_GAMMA:
++		if (copy_to_user((void __user *) arg, rpisense_fb_param.gamma,
++				 sizeof(u8[32])))
++			return -EFAULT;
++		return 0;
++	case SENSEFB_FBIOSET_GAMMA:
++		if (copy_from_user(gamma_user, (void __user *)arg,
++				   sizeof(u8[32])))
++			return -EFAULT;
++		rpisense_fb_param.gamma = gamma_user;
++		schedule_delayed_work(&info->deferred_work,
++				      rpisense_fb_defio.delay);
++		return 0;
++	case SENSEFB_FBIORESET_GAMMA:
++		switch (arg) {
++		case 0:
++			rpisense_fb_param.gamma = gamma_default;
++			break;
++		case 1:
++			rpisense_fb_param.gamma = gamma_low;
++			break;
++		case 2:
++			rpisense_fb_param.gamma = gamma_user;
++			break;
++		default:
++			return -EINVAL;
++		}
++		schedule_delayed_work(&info->deferred_work,
++				      rpisense_fb_defio.delay);
++		break;
++	default:
++		return -EINVAL;
++	}
++	return 0;
++}
++
++static struct fb_ops rpisense_fb_ops = {
++	.owner		= THIS_MODULE,
++	.fb_read	= fb_sys_read,
++	.fb_write	= rpisense_fb_write,
++	.fb_fillrect	= rpisense_fb_fillrect,
++	.fb_copyarea	= rpisense_fb_copyarea,
++	.fb_imageblit	= rpisense_fb_imageblit,
++	.fb_ioctl	= rpisense_fb_ioctl,
++};
++
++static int rpisense_fb_probe(struct platform_device *pdev)
++{
++	struct fb_info *info;
++	int ret = -ENOMEM;
++	struct rpisense_fb *rpisense_fb;
++
++	rpisense = rpisense_get_dev();
++	rpisense_fb = &rpisense->framebuffer;
++
++	rpisense_fb_param.vmem = vzalloc(rpisense_fb_param.vmemsize);
++	if (!rpisense_fb_param.vmem)
++		return ret;
++
++	rpisense_fb_param.vmem_work = devm_kmalloc(&pdev->dev, 193, GFP_KERNEL);
++	if (!rpisense_fb_param.vmem_work)
++		goto err_malloc;
++
++	info = framebuffer_alloc(0, &pdev->dev);
++	if (!info) {
++		dev_err(&pdev->dev, "Could not allocate framebuffer.\n");
++		goto err_malloc;
++	}
++	rpisense_fb->info = info;
++
++	rpisense_fb_fix.smem_start = (unsigned long)rpisense_fb_param.vmem;
++	rpisense_fb_fix.smem_len = rpisense_fb_param.vmemsize;
++
++	info->fbops = &rpisense_fb_ops;
++	info->fix = rpisense_fb_fix;
++	info->var = rpisense_fb_var;
++	info->fbdefio = &rpisense_fb_defio;
++	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
++	info->screen_base = rpisense_fb_param.vmem;
++	info->screen_size = rpisense_fb_param.vmemsize;
++
++	if (lowlight)
++		rpisense_fb_param.gamma = gamma_low;
++
++	fb_deferred_io_init(info);
++
++	ret = register_framebuffer(info);
++	if (ret < 0) {
++		dev_err(&pdev->dev, "Could not register framebuffer.\n");
++		goto err_fballoc;
++	}
++
++	fb_info(info, "%s frame buffer device\n", info->fix.id);
++	schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
++	return 0;
++err_fballoc:
++	framebuffer_release(info);
++err_malloc:
++	vfree(rpisense_fb_param.vmem);
++	return ret;
++}
++
++static int rpisense_fb_remove(struct platform_device *pdev)
++{
++	struct rpisense_fb *rpisense_fb = &rpisense->framebuffer;
++	struct fb_info *info = rpisense_fb->info;
++
++	if (info) {
++		unregister_framebuffer(info);
++		fb_deferred_io_cleanup(info);
++		framebuffer_release(info);
++		vfree(rpisense_fb_param.vmem);
++	}
++
++	return 0;
++}
++
++#ifdef CONFIG_OF
++static const struct of_device_id rpisense_fb_id[] = {
++	{ .compatible = "rpi,rpi-sense-fb" },
++	{ },
++};
++MODULE_DEVICE_TABLE(of, rpisense_fb_id);
++#endif
++
++static struct platform_device_id rpisense_fb_device_id[] = {
++	{ .name = "rpi-sense-fb" },
++	{ },
++};
++MODULE_DEVICE_TABLE(platform, rpisense_fb_device_id);
++
++static struct platform_driver rpisense_fb_driver = {
++	.probe = rpisense_fb_probe,
++	.remove = rpisense_fb_remove,
++	.driver = {
++		.name = "rpi-sense-fb",
++		.owner = THIS_MODULE,
++	},
++};
++
++module_platform_driver(rpisense_fb_driver);
++
++MODULE_DESCRIPTION("Raspberry Pi Sense HAT framebuffer driver");
++MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
++MODULE_LICENSE("GPL");
++
+--- /dev/null
++++ b/include/linux/mfd/rpisense/core.h
+@@ -0,0 +1,47 @@
++/*
++ * Raspberry Pi Sense HAT core driver
++ * http://raspberrypi.org
++ *
++ * Copyright (C) 2015 Raspberry Pi
++ *
++ * Author: Serge Schneider
++ *
++ *  This program is free software; you can redistribute  it and/or modify it
++ *  under  the terms of  the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the  License, or (at your
++ *  option) any later version.
++ *
++ */
++
++#ifndef __LINUX_MFD_RPISENSE_CORE_H_
++#define __LINUX_MFD_RPISENSE_CORE_H_
++
++#include <linux/mfd/rpisense/joystick.h>
++#include <linux/mfd/rpisense/framebuffer.h>
++
++/*
++ * Register values.
++ */
++#define RPISENSE_FB			0x00
++#define RPISENSE_WAI			0xF0
++#define RPISENSE_VER			0xF1
++#define RPISENSE_KEYS			0xF2
++#define RPISENSE_EE_WP			0xF3
++
++#define RPISENSE_ID			's'
++
++struct rpisense {
++	struct device *dev;
++	struct i2c_client *i2c_client;
++
++	/* Client devices */
++	struct rpisense_js joystick;
++	struct rpisense_fb framebuffer;
++};
++
++struct rpisense *rpisense_get_dev(void);
++s32 rpisense_reg_read(struct rpisense *rpisense, int reg);
++int rpisense_reg_write(struct rpisense *rpisense, int reg, u16 val);
++int rpisense_block_write(struct rpisense *rpisense, const char *buf, int count);
++
++#endif
+--- /dev/null
++++ b/include/linux/mfd/rpisense/framebuffer.h
+@@ -0,0 +1,32 @@
++/*
++ * Raspberry Pi Sense HAT framebuffer driver
++ * http://raspberrypi.org
++ *
++ * Copyright (C) 2015 Raspberry Pi
++ *
++ * Author: Serge Schneider
++ *
++ *  This program is free software; you can redistribute  it and/or modify it
++ *  under  the terms of  the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the  License, or (at your
++ *  option) any later version.
++ *
++ */
++
++#ifndef __LINUX_RPISENSE_FB_H_
++#define __LINUX_RPISENSE_FB_H_
++
++#define SENSEFB_FBIO_IOC_MAGIC 0xF1
++
++#define SENSEFB_FBIOGET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 0)
++#define SENSEFB_FBIOSET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 1)
++#define SENSEFB_FBIORESET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 2)
++
++struct rpisense;
++
++struct rpisense_fb {
++	struct platform_device *pdev;
++	struct fb_info *info;
++};
++
++#endif
+--- /dev/null
++++ b/include/linux/mfd/rpisense/joystick.h
+@@ -0,0 +1,35 @@
++/*
++ * Raspberry Pi Sense HAT joystick driver
++ * http://raspberrypi.org
++ *
++ * Copyright (C) 2015 Raspberry Pi
++ *
++ * Author: Serge Schneider
++ *
++ *  This program is free software; you can redistribute  it and/or modify it
++ *  under  the terms of  the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the  License, or (at your
++ *  option) any later version.
++ *
++ */
++
++#ifndef __LINUX_RPISENSE_JOYSTICK_H_
++#define __LINUX_RPISENSE_JOYSTICK_H_
++
++#include <linux/input.h>
++#include <linux/interrupt.h>
++#include <linux/gpio/consumer.h>
++#include <linux/platform_device.h>
++
++struct rpisense;
++
++struct rpisense_js {
++	struct platform_device *pdev;
++	struct input_dev *keys_dev;
++	struct gpio_desc *keys_desc;
++	struct work_struct keys_work_s;
++	int keys_irq;
++};
++
++
++#endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0084-Add-support-for-all-the-downstream-rpi-sound-card-dr.patch b/target/linux/bcm27xx/patches-5.15/950-0084-Add-support-for-all-the-downstream-rpi-sound-card-dr.patch
new file mode 100644
index 0000000000..5049247ca4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0084-Add-support-for-all-the-downstream-rpi-sound-card-dr.patch
@@ -0,0 +1,16849 @@
+From ee4cf9296b88a4c40b1b8a41a159a587585b2414 Mon Sep 17 00:00:00 2001
+From: Florian Meier <florian.meier@koalo.de>
+Date: Mon, 25 Jan 2016 15:48:59 +0000
+Subject: [PATCH] Add support for all the downstream rpi sound card
+ drivers
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+ASoC: Add support for Rpi-DAC
+
+ASoC: Add prompt for ICS43432 codec
+
+Without a prompt string, a config setting can't be included in a
+defconfig. Give CONFIG_SND_SOC_ICS43432 a prompt so that Pi soundcards
+can use the driver.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+Add IQaudIO Sound Card support for Raspberry Pi
+
+Set a limit of 0dB on Digital Volume Control
+
+The main volume control in the PCM512x DAC has a range up to
++24dB. This is dangerously loud and can potentially cause massive
+clipping in the output stages. Therefore this sets a sensible
+limit of 0dB for this control.
+
+Allow up to 24dB digital gain to be applied when using IQAudIO DAC+
+
+24db_digital_gain DT param can be used to specify that PCM512x
+codec "Digital" volume control should not be limited to 0dB gain,
+and if specified will allow the full 24dB gain.
+
+Modify IQAudIO DAC+ ASoC driver to set card/dai config from dt
+
+Add the ability to set the card name, dai name and dai stream name, from
+dt config.
+
+Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
+
+IQaudIO: auto-mute for AMP+ and DigiAMP+
+
+IQAudIO amplifier mute via GPIO22. Add dt params for "one-shot" unmute
+and auto mute.
+
+Revision 2, auto mute implementing HiassofT suggestion to mute/unmute
+using set_bias_level, rather than startup/shutdown....
+"By default DAPM waits 5 seconds (pmdown_time) before shutting down
+playback streams so a close/stop immediately followed by open/start
+doesn't trigger an amp mute+unmute."
+
+Tested on both AMP+ (via DAC+) and DigiAMP+, with both options...
+
+dtoverlay=iqaudio-dacplus,unmute_amp
+ "one-shot" unmute when kernel module loads.
+
+dtoverlay=iqaudio-dacplus,auto_mute_amp
+ Unmute amp when ALSA device opened by a client. Mute, with 5 second delay
+ when ALSA device closed. (Re-opening the device within the 5 second close
+ window, will cancel mute.)
+
+Revision 4, using gpiod.
+
+Revision 5, clean-up formatting before adding mute code.
+ - Convert tab plus 4 space formatting to 2x tab
+ - Remove '// NOT USED' commented code
+
+Revision 6, don't attempt to "one-shot" unmute amp, unless card is
+successfully registered.
+
+Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
+
+ASoC: iqaudio-dac: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: iqaudio-dac: use modern dai_link style
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+Added support for HiFiBerry DAC+
+
+The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses
+a different codec chip (PCM5122), therefore a new driver is necessary.
+
+Add support for the HiFiBerry DAC+ Pro.
+
+The HiFiBerry DAC+ and DAC+ Pro products both use the existing bcm sound driver with the DAC+ Pro having a special clock device driver representing the two high precision oscillators.
+
+An addition bug fix is included for the PCM512x codec where by the physical size of the sample frame is used in the calculation of the LRCK divisor as it was found to be wrong when using 24-bit depth sample contained in a little endian 4-byte sample frame.
+
+Limit PCM512x "Digital" gain to 0dB by default with HiFiBerry DAC+
+
+24db_digital_gain DT param can be used to specify that PCM512x
+codec "Digital" volume control should not be limited to 0dB gain,
+and if specified will allow the full 24dB gain.
+
+Add dt param to force HiFiBerry DAC+ Pro into slave mode
+
+"dtoverlay=hifiberry-dacplus,slave"
+
+Add 'slave' param to use HiFiBerry DAC+ Pro in slave mode,
+with Pi as master for bit and frame clock.
+
+Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
+
+Fixed a bug when using 352.8kHz sample rate
+
+Signed-off-by: Daniel Matuschek <daniel@hifiberry.com>
+
+ASoC: pcm512x: revert downstream changes
+
+This partially reverts commit 185ea05465aac8bf02a0d2b2f4289d42c72870b7
+which was added by https://github.com/raspberrypi/linux/pull/1152
+
+The downstream pcm512x changes caused a regression, it broke normal
+use of the 24bit format with the codec, eg when using simple-audio-card.
+
+The actual bug with 24bit playback is the incorrect usage
+of physical_width in various drivers in the downstream tree
+which causes 24bit data to be transmitted with 32 clock
+cycles. So it's not the pcm512x that needs fixing, it's the
+soundcard drivers.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: hifiberry_dacplus: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: hifiberry_dacplus: transmit S24_LE with 64 BCLK cycles
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+hifiberry_dacplus: switch to snd_soc_dai_set_bclk_ratio
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: hifiberry_dacplus: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Add driver for rpi-proto
+
+Forward port of 3.10.x driver from https://github.com/koalo
+We are using a custom board and would like to use rpi 3.18.x
+kernel. Patch works fine for our embedded system.
+
+URL to the audio chip:
+http://www.mikroe.com/add-on-boards/audio-voice/audio-codec-proto/
+
+Playback tested with devicetree enabled.
+
+Signed-off-by: Waldemar Brodkorb <wbrodkorb@conet.de>
+
+ASoC: rpi-proto: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Add Support for JustBoom Audio boards
+
+justboom-dac: Adjust for ALSA API change
+
+As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card *
+rather than a struct snd_soc_codec *.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+ASoC: justboom-dac: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Also remove hw_params as it's no longer needed.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: justboom-dac: use modern dai_link style
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+New AudioInjector.net Pi soundcard with low jitter audio in and out.
+
+Contains the sound/soc/bcm ALSA machine driver and necessary alterations to the Kconfig and Makefile.
+Adds the dts overlay and updates the Makefile and README.
+Updates the relevant defconfig files to enable building for the Raspberry Pi.
+Thanks to Phil Elwell (pelwell) for the review, simple-card concepts and discussion. Thanks to Clive Messer for overlay naming suggestions.
+
+Added support for headphones, microphone and bclk_ratio settings.
+
+This patch adds headphone and microphone capability to the Audio Injector sound card. The patch also sets the bit clock ratio for use in the bcm2835-i2s driver. The bcm2835-i2s can't handle an 8 kHz sample rate when the bit clock is at 12 MHz because its register is only 10 bits wide which can't represent the ch2 offset of 1508. For that reason, the rate constraint is added.
+
+ASoC: audioinjector-pi-soundcard: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+New driver for RRA DigiDAC1 soundcard using WM8741 + WM8804
+
+ASoC: digidac1-soundcard: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Add support for Dion Audio LOCO DAC-AMP HAT
+
+Using dedicated machine driver and pcm5102a codec driver.
+
+Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
+
+ASoC: dionaudio_loco: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Allo Piano DAC boards: Initial 2 channel (stereo) support (#1645)
+
+Add initial 2 channel (stereo) support for Allo Piano DAC (2.0/2.1) boards,
+using allo-piano-dac-pcm512x-audio overlay and allo-piano-dac ALSA ASoC
+machine driver.
+
+NB. The initial support is 2 channel (stereo) ONLY!
+(The Piano DAC 2.1 will only support 2 channel (stereo) left/right output,
+ pending an update to the upstream pcm512x codec driver, which will have
+ to be submitted via upstream. With the initial downstream support,
+ provided by this patch, the Piano DAC 2.1 subwoofer outputs will
+ not function.)
+
+Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
+Signed-off-by: Clive Messer <clive.messer@digitaldreamtime.co.uk>
+Tested-by: Clive Messer <clive.messer@digitaldreamtime.co.uk>
+
+ASoC: allo-piano-dac: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Also remove hw_params and ops as they are no longer needed.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: allo-piano-dac: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Add support for Allo Piano DAC 2.1 plus add-on board for Raspberry Pi.
+
+The Piano DAC 2.1 has support for 4 channels with subwoofer.
+
+Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
+Reviewed-by: Vijay Kumar B. <vijaykumar@zilogic.com>
+Reviewed-by: Raashid Muhammed <raashidmuhammed@zilogic.com>
+
+Add clock changes and mute gpios (#1938)
+
+Also improve code style and adhere to ALSA coding conventions.
+
+Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
+Reviewed-by: Vijay Kumar B. <vijaykumar@zilogic.com>
+Reviewed-by: Raashid Muhammed <raashidmuhammed@zilogic.com>
+
+PianoPlus: Dual Mono & Dual Stereo features added (#2069)
+
+allo-piano-dac-plus: Master volume added + fixes
+
+Master volume added, which controls both DACs volumes.
+
+See: https://github.com/raspberrypi/linux/pull/2149
+
+Also fix initial max volume, default mode value, and unmute.
+
+Signed-off-by: allocom <sparky-dev@allo.com>
+
+ASoC: allo-piano-dac-plus: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+sound: bcm: Fix memset dereference warning
+
+This warning appears with GCC 6.4.0 from toolchains.bootlin.com:
+
+../sound/soc/bcm/allo-piano-dac-plus.c: In function ‘snd_allo_piano_dac_init’:
+../sound/soc/bcm/allo-piano-dac-plus.c:711:30: warning: argument to ‘sizeof’ in ‘memset’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess]
+  memset(glb_ptr, 0x00, sizeof(glb_ptr));
+                              ^
+
+Suggested-by: Phil Elwell <phil@raspberrypi.org>
+Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
+
+ASoC: allo-piano-dac-plus: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Add support for Allo Boss DAC add-on board for Raspberry Pi. (#1924)
+
+Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
+Reviewed-by: Deepak <deepak@zilogic.com>
+Reviewed-by: BabuSubashChandar <babusubashchandar@zilogic.com>
+
+Add support for new clock rate and mute gpios.
+
+Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
+Reviewed-by: Deepak <deepak@zilogic.com>
+Reviewed-by: BabuSubashChandar <babusubashchandar@zilogic.com>
+
+ASoC: allo-boss-dac: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: allo-boss-dac: transmit S24_LE with 64 BCLK cycles
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+allo-boss-dac: switch to snd_soc_dai_set_bclk_ratio
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: allo-boss-dac: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Support for Blokas Labs pisound board
+
+Pisound dynamic overlay (#1760)
+
+Restructuring pisound-overlay.dts, so it can be loaded and unloaded dynamically using dtoverlay.
+
+Print a logline when the kernel module is removed.
+
+pisound improvements:
+
+* Added a writable sysfs object to enable scripts / user space software
+to blink MIDI activity LEDs for variable duration.
+* Improved hw_param constraints setting.
+* Added compatibility with S16_LE sample format.
+* Exposed some simple placeholder volume controls, so the card appears
+in volumealsa widget.
+
+Add missing SND_PISOUND selects dependency to SND_RAWMIDI
+
+Without it the Pisound module fails to compile.
+See https://github.com/raspberrypi/linux/issues/2366
+
+Updates for Pisound module code:
+
+	* Merged 'Fix a warning in DEBUG builds' (1c8b82b).
+	* Updating some strings and copyright information.
+	* Fix for handling high load of MIDI input and output.
+	* Use dual rate oversampling ratio for 96kHz instead of single
+	  rate one.
+
+Signed-off-by: Giedrius Trainavicius <giedrius@blokas.io>
+
+Fixing memset call in pisound.c
+
+Signed-off-by: Giedrius Trainavicius <giedrius@blokas.io>
+
+Fix for Pisound's MIDI Input getting blocked for a while in rare cases.
+
+There was a possible race condition which could lead to Input's FIFO queue
+to be underflown, causing high amount of processing in the worker thread for
+some period of time.
+
+Signed-off-by: Giedrius Trainavicius <giedrius@blokas.io>
+
+Fix for Pisound kernel module in Real Time kernel configuration.
+
+When handler of data_available interrupt is fired, queue_work ends up
+getting called and it can block on a spin lock which is not allowed in
+interrupt context. The fix was to run the handler from a thread context
+instead.
+
+Pisound: Remove spinlock usage around spi_sync
+
+ASoC: pisound: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+ASoC: pisound: fix the parameter for spi_device_match
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+ASoC: Add driver for Cirrus Logic Audio Card
+
+Note: due to problems with deferred probing of regulators
+the following softdep should be added to a modprobe.d file
+
+softdep arizona-spi pre: arizona-ldo1
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: rpi-cirrus: use modern dai_link style
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+sound: Support for Dion Audio LOCO-V2 DAC-AMP HAT
+
+Signed-off-by: Miquel Blauw <info@dionaudio.nl>
+
+ASoC: dionaudio_loco-v2: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Also remove hw_params and ops as they are no longer needed.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: dionaudio_loco-v2: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Add support for Fe-Pi audio sound card. (#1867)
+
+Fe-Pi Audio Sound Card is based on NXP SGTL5000 codec.
+Mechanical specification of the board is the same the Raspberry Pi Zero.
+3.5mm jacks for Headphone/Mic, Line In, and Line Out.
+
+Signed-off-by: Henry Kupis <fe-pi@cox.net>
+
+ASoC: fe-pi-audio: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Add support for the AudioInjector.net Octo sound card
+
+AudioInjector Octo: sample rates, regulators, reset
+
+This patch adds new sample rates to the Audioinjector Octo sound card. The
+new supported rates are (in kHz) :
+96, 48, 32, 24, 16, 8, 88.2, 44.1, 29.4, 22.05, 14.7
+
+Reference the bcm270x DT regulators in the overlay.
+
+This patch adds a reset GPIO for the AudioInjector.net octo sound card.
+
+Audioinjector octo : Make the playback and capture symmetric
+
+This patch ensures that the sample rate and channel count of the audioinjector
+octo sound card are symmetric.
+
+audioinjector-octo: Add continuous clock feature
+
+By user request, add a switch to prevent the clocks being stopped when
+the stream is paused, stopped or shutdown. Provide access to the switch
+by adding a 'non-stop-clocks' parameter to the audioinjector-addons
+overlay.
+
+See: https://github.com/raspberrypi/linux/issues/2409
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+sound: Fixes for audioinjector-octo under 4.19
+
+1. Move the DT alias declaration to the I2C shim in the cases
+where the shim is enabled. This works around a problem caused by a
+4.19 commit [1] that generates DT/OF uevents for I2C drivers.
+
+2. Fix the diagnostics in an error path of the soundcard driver to
+correctly identify the reason for the failure to load.
+
+3. Move the declaration of the clock node in the overlay outside
+the I2C node to avoid warnings.
+
+4. Sort the overlay nodes so that dependencies are only to earlier
+fragments, in an attempt to get runtime dtoverlay application to
+work (it still doesn't...)
+
+See: https://github.com/Audio-Injector/Octo/issues/14
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+[1] af503716ac14 ("i2c: core: report OF style module alias for devices registered via OF")
+
+ASoC: audioinjector-octo-soundcard: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Driver support for Google voiceHAT soundcard.
+
+ASoC: googlevoicehat-codec: Use correct device when grabbing GPIO
+
+The fixup for the VoiceHAT in 4.18 incorrectly tried to find the
+sdmode GPIO pin under the card device, not the codec device.
+This failed, and therefore caused the device probe to fail.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+ASoC: googlevoicehat-codec: Reformat for kernel coding standards
+
+Fix all whitespace, indentation, and bracing errors.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+ASoC: googlevoicehat-codec: Make driver function structure const
+
+Make voicehat_component_driver a const structure.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+ASoC: googlevoicehat-codec: Only convert from ms to jiffies once
+
+Minor optimisation and allows to become checkpatch clean.
+A msec value is read out of DT or from a define, and convert once to
+jiffies, rather than every time that it is used.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+Driver and overlay for Allo Katana DAC
+
+Allo Katana DAC: Updated default values
+
+Signed-off-by: Jaikumar <jaikumar@cem-solutions.com>
+
+Added mute stream func
+
+Signed-off-by: Jaikumar <jaikumar@cem-solutions.net>
+
+codecs: Correct Katana minimum volume
+
+Update Katana minimum volume to get the exact 0.5 dB value in each step.
+
+Signed-off-by: Sudeep Kumar <sudeepkumar@cem-solutions.net>
+
+ASoC: Add generic RPI driver for simple soundcards.
+
+The RPI simple sound card driver provides a generic ALSA SOC card driver
+supporting a variety of Pi HAT soundcards. The intention is to avoid
+the duplication of code for cards that can't be fully supported by
+the soc simple/graph cards but are otherwise almost identical.
+
+This initial commit adds support for the ADAU1977 ADC, Google VoiceHat,
+HifiBerry AMP, HifiBerry DAC and RPI DAC.
+
+Signed-off-by: Tim Gover <tim.gover@raspberrypi.org>
+
+ASoC: Use correct card name in rpi-simple driver
+
+Use the specific card name from drvdata instead of the snd_rpi_simple
+
+rpi-simple-soundcard: Use nicer driver name "RPi-simple"
+
+Rename the driver from "RPI simple soundcard" to "RPi-simple" so that
+the driver name won't be mangled allowing to be used unaltered as the
+card conf filename.
+
+ASoC: rpi-simple-soundcard: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+ASoC: Add Kconfig and Makefile for sound/soc/bcm
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+
+ASoC: Create a generic Pi Hat WM8804 driver
+
+Reduce the amount of duplicated code by creating a generic driver for
+Pi Hat digi cards using the WM8804 codec.
+
+This replaces the
+Allo DigiOne, Hifiberry Digi/Pro, JustBoom Digi and IQAudIO Digi
+dedicate soundcard drivers with a generic driver.
+
+There are no significant changes to the runtime behavior of the drivers
+and end users should not have to change any configuration settings
+after upgrading.
+
+Minor changes
+* Check the return value of snd_soc_component_update_bits
+* Added some pr_debug tracing
+* Various checkpatch tidyups
+* Updated allodigi-one to use use 128FS at > 96 Khz. This appears to
+  be an omission in the original driver code so followed the Hifiberry
+  DAC driver approach.
+
+ASoC: rpi-wm8804-soundcard: use modern dai_link style
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+rpi-wm8804-soundcard: drop PWRDN register writes
+
+Since kernel 4.0 the PWRDN register bits are under DAPM
+control from the wm8804 driver.
+
+Drop code that modifies that register to avoid interfering
+with DAPM.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+rpi-wm8804-soundcard: configure wm8804 clocks only on rate change
+
+This should avoid clicks when stopping and immediately afterwards
+starting a stream with the same samplerate as before.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+rpi-wm8804-soundcard: Fixed MCLKDIV for Allo Digione
+
+The Allo Digione board wants a fixed MCLKDIV of 256.
+
+See: https://github.com/raspberrypi/linux/issues/3296
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+ASoC: Add support for AudioSense-Pi add-on soundcard
+
+AudioSense-Pi is a RPi HAT based on a TI's TLV320AIC32x4 stereo codec
+
+This hardware provides multiple audio I/O capabilities to the RPi.
+The codec connects to the RPi's SoC through the I2S Bus.
+
+The following devices can be connected through a 3.5mm jack
+	1. Line-In: Plain old audio in from mobile phones, PCs, etc.,
+	2. Mic-In: Connect a microphone
+	3. Line-Out: Connect the output to a speaker
+	4. Headphones: Connect a Headphone w or w/o microphones
+
+Multiple Inputs:
+	It supports the following combinations
+	1. Two stereo Line-Inputs and a microphone
+	2. One stereo Line-Input and two microphones
+	3. Two stereo Line-Inputs, a microphone and
+		one mono line-input (with h/w hack)
+	4. One stereo Line-Input, two microphones and
+		one mono line-input (with h/w hack)
+
+Multiple Outputs:
+	Audio output can be routed to the headphones or
+		speakers (with additional hardware)
+
+Signed-off-by: b-ak <anur.bhargav@gmail.com>
+
+ASoC: audiosense-pi: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Added driver for the HiFiBerry DAC+ ADC (#2694)
+
+Signed-off-by: Daniel Matuschek <daniel@hifiberry.com>
+
+hifiberry_dacplusadc: switch to snd_soc_dai_set_bclk_ratio
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: hifiberry_dacplusadc: fix DAI link setup
+
+The driver only defines a single DAI link and the code that tries
+to setup the second (non-existent) DAI link looks wrong - using dmic
+as a CPU/platform driver doesn't make any sense.
+
+The DT overlay doesn't define a dmic property, so the code was never
+executed (otherwise it would have resulted in a memory corruption).
+
+So drop the offending code to prevent issues if a dmic property
+should be added to the DT overlay.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+ASoC: hifiberry_dacplusadc: use modern dai_link style
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+
+Audiophonics I-Sabre 9038Q2M DAC driver
+
+Signed-off-by: Audiophonics <contact@audiophonics.fr>
+
+ASoC: i-sabre-q2m: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+Added IQaudIO Pi-Codec board support (#2969)
+
+Add support for the IQaudIO Pi-Codec board.
+
+Signed-off-by: Gordon <gordon@iqaudio.com>
+
+Fixed 48k timing issue
+
+ASoC: iqaudio-codec: use modern dai_link style
+
+Signed-off-by: Hui Wang <hui.wang@canonical.com>
+
+adds the Hifiberry DAC+ADC PRO version
+
+This adds the driver for the DAC+ADC PRO version of the Hifiberry soundcard with software controlled PCM1863 ADC
+Signed-off-by: Joerg Schambacher joerg@i2audio.com
+
+Add Hifiberry DAC+DSP soundcard driver (#3224)
+
+Adds the driver for the Hifiberry DAC+DSP. It supports capture and
+playback depending on the DSP firmware.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+Allow simultaneous use of JustBoom DAC and Digi
+
+Signed-off-by: Johannes Krude <johannes@krude.de>
+
+Pisound: MIDI communication fixes for scaled down CPU.
+
+* Increased maximum SPI communication speed to avoid running too slow
+  when the CPU is scaled down and losing MIDI data.
+
+* Keep track of buffer usage in millibytes for higher precision.
+
+Signed-off-by: Giedrius Trainavičius <giedrius@blokas.io>
+
+sound: Add the HiFiBerry DAC+HD version
+
+This adds the driver for the DAC+HD version supporting HiFiBerry's
+PCM179x based DACs. It also adds PLL control for clock generation.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+Fix master mode settings of HiFiBerry DAC+ADC PRO card (#3424)
+
+This patch fixes the board DAI setting when in master-mode.
+Wrong setting could have caused random pop noise.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+adds LED OFF feature to HiFiBerry DAC+ADC PRO sound card
+
+This adds a DT overlay parameter 'leds_off' which allows
+to switch off the onboard activity LEDs at all times
+which has been requested by some users.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+adds LED OFF feature to HiFiBerry DAC+ADC sound card
+
+This adds a DT overlay parameter 'leds_off' which allows
+to switch off the onboard activity LEDs at all times
+which has been requested by some users.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+adds LED OFF feature to HiFiBerry DAC+/DAC+PRO sound cards
+
+This adds a DT overlay parameter 'leds_off' which allows
+to switch off the onboard activity LEDs at all times
+which has been requested by some users.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+pisound: Added reading Pisound board hardware revision and exposing it (#3425)
+
+pisound: Added reading Pisound board hardware revision and exposing it in kernel log and sysfs file:
+
+/sys/kernel/pisound/hw_version
+
+Signed-off-by: Giedrius <giedrius@blokas.io>
+
+Added driver for HiFiBerry Amp amplifier add-on board
+
+The driver contains a low-level hardware driver for the TAS5713 and the
+drivers for the Raspberry Pi I2S subsystem.
+
+TAS5713: return error if initialisation fails
+
+Existing TAS5713 driver logs errors during initialisation, but does not return
+an error code. Therefore even if initialisation fails, the driver will still be
+loaded, but won't work. This patch fixes this. I2C communication error will now
+reported correctly by a non-zero return code.
+
+HiFiBerry Amp: fix device-tree problems
+
+Some code to load the driver based on device-tree-overlays was missing. This is added by this patch.
+
+According to 5713 pdf doc CLOCK_CTRL is a readonly status register, and it behaves so. Remove useless setting
+
+sound: pcm512x-codec: Adding 352.8kHz samplerate support
+
+sound/soc: only first codec is master in multicodec setup
+
+When using multiple codecs, at most one codec should generate the master
+clock. All codecs except the first are therefore configured for slave
+mode.
+
+Signed-off-by: Johannes Krude <johannes@krude.de>
+
+ASoC: Fix snd_soc_get_pcm_runtime usage
+
+Commit [1] changed the snd_soc_get_pcm_runtime to take a dai_link
+pointer instead of a string. Patch up the downstream drivers to use
+the modified API.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+[1] 4468189ff307 ("ASoC: soc-core: find rtd via dai_link pointer at snd_soc_get_pcm_runtime()")
+
+Add support for the AudioInjector.net Isolated sound card
+
+This patch adds support for the Audio Injector Isolated sound card.
+
+Signed-off-by: Matt Flax <flatmax@flatmax.org>
+
+Add support for merus-amp soundcard and ma120x0p codec
+
+Add 96KHz rate support to MA120X0P codec and make enable and mute gpio
+pins optional.
+
+Signed-off-by: AMuszkat <ariel.muszkat@gmail.com>
+
+Fixes a problem with clock settings of HiFiBerry DAC+ADC PRO (#3545)
+
+This patch fixes a problem of the re-calculation of
+i2s-clock and -parameter settings when only the ADC is activated.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+configs: Enable the AD193x codecs
+
+See: https://github.com/raspberrypi/linux/issues/2850
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+Switch to snd_soc_dai_set_bclk_ratio
+Replaces obsolete function snd_soc_dai_set_tdm_slot
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+
+Enhances the DAC+ driver to control the optional headphone amplifier
+
+Probes on the I2C bus for TPA6130A2, if successful, it sets DT-parameter
+'status' from 'disabled' to 'okay' using change_sets to enable
+the headphone control.
+
+Signed-off-by: Joerg Schambacher joerg@i2audio.com
+
+Update Allo Piano Dac Driver
+
+Add unique names to the individual dac coded drivers
+Remove some of the codec controls that are not used.
+
+Signed-off-by: Paul Hermann <paul@picoreplayer.org>
+
+Fixes an onboard clock detection problem of the PRO versions
+
+Increasing the sleep time after clock selection to 3-4ms
+allows the correct detection of all combinations of DAC+ Pro
+and DAC+ADC Pro sound cards and the various PI revisions.
+
+Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
+---
+ .../devicetree/bindings/vendor-prefixes.txt   |  463 ++++++
+ .../devicetree/bindings/vendor-prefixes.yaml  |    2 +
+ drivers/clk/Kconfig                           |    6 +
+ drivers/clk/Makefile                          |    3 +
+ drivers/clk/clk-allo-dac.c                    |  161 ++
+ drivers/clk/clk-hifiberry-dachd.c             |  333 ++++
+ drivers/clk/clk-hifiberry-dacpro.c            |  160 ++
+ sound/soc/bcm/Kconfig                         |  291 ++++
+ sound/soc/bcm/Makefile                        |   68 +-
+ sound/soc/bcm/allo-boss-dac.c                 |  456 ++++++
+ sound/soc/bcm/allo-boss2-dac.c                | 1133 ++++++++++++++
+ sound/soc/bcm/allo-katana-codec.c             |  388 +++++
+ sound/soc/bcm/allo-piano-dac-plus.c           | 1063 +++++++++++++
+ sound/soc/bcm/allo-piano-dac.c                |  122 ++
+ .../bcm/audioinjector-isolated-soundcard.c    |  183 +++
+ sound/soc/bcm/audioinjector-octo-soundcard.c  |  346 +++++
+ sound/soc/bcm/audioinjector-pi-soundcard.c    |  187 +++
+ sound/soc/bcm/audiosense-pi.c                 |  248 +++
+ sound/soc/bcm/digidac1-soundcard.c            |  421 +++++
+ sound/soc/bcm/dionaudio_loco-v2.c             |  117 ++
+ sound/soc/bcm/dionaudio_loco.c                |  117 ++
+ sound/soc/bcm/fe-pi-audio.c                   |  154 ++
+ sound/soc/bcm/googlevoicehat-codec.c          |  214 +++
+ sound/soc/bcm/hifiberry_dacplus.c             |  527 +++++++
+ sound/soc/bcm/hifiberry_dacplusadc.c          |  398 +++++
+ sound/soc/bcm/hifiberry_dacplusadcpro.c       |  537 +++++++
+ sound/soc/bcm/hifiberry_dacplusdsp.c          |   90 ++
+ sound/soc/bcm/hifiberry_dacplushd.c           |  238 +++
+ sound/soc/bcm/i-sabre-q2m.c                   |  158 ++
+ sound/soc/bcm/iqaudio-codec.c                 |  274 ++++
+ sound/soc/bcm/iqaudio-dac.c                   |  223 +++
+ sound/soc/bcm/justboom-both.c                 |  266 ++++
+ sound/soc/bcm/justboom-dac.c                  |  147 ++
+ sound/soc/bcm/pifi-40.c                       |  283 ++++
+ sound/soc/bcm/pisound.c                       | 1240 +++++++++++++++
+ sound/soc/bcm/rpi-cirrus.c                    | 1025 ++++++++++++
+ sound/soc/bcm/rpi-proto.c                     |  147 ++
+ sound/soc/bcm/rpi-simple-soundcard.c          |  419 +++++
+ sound/soc/bcm/rpi-wm8804-soundcard.c          |  410 +++++
+ sound/soc/codecs/Kconfig                      |   26 +-
+ sound/soc/codecs/Makefile                     |    8 +
+ sound/soc/codecs/cs42xx8-i2c.c                |    9 +-
+ sound/soc/codecs/cs42xx8.c                    |    2 +
+ sound/soc/codecs/i-sabre-codec.c              |  392 +++++
+ sound/soc/codecs/i-sabre-codec.h              |   42 +
+ sound/soc/codecs/ma120x0p.c                   | 1384 +++++++++++++++++
+ sound/soc/codecs/pcm1794a.c                   |   69 +
+ sound/soc/codecs/pcm512x.c                    |    2 +-
+ sound/soc/codecs/tas5713.c                    |  363 +++++
+ sound/soc/codecs/tas5713.h                    |  210 +++
+ sound/soc/soc-core.c                          |   29 +-
+ 51 files changed, 15545 insertions(+), 9 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/vendor-prefixes.txt
+ create mode 100644 drivers/clk/clk-allo-dac.c
+ create mode 100644 drivers/clk/clk-hifiberry-dachd.c
+ create mode 100644 drivers/clk/clk-hifiberry-dacpro.c
+ create mode 100644 sound/soc/bcm/allo-boss-dac.c
+ create mode 100644 sound/soc/bcm/allo-boss2-dac.c
+ create mode 100644 sound/soc/bcm/allo-katana-codec.c
+ create mode 100644 sound/soc/bcm/allo-piano-dac-plus.c
+ create mode 100644 sound/soc/bcm/allo-piano-dac.c
+ create mode 100644 sound/soc/bcm/audioinjector-isolated-soundcard.c
+ create mode 100644 sound/soc/bcm/audioinjector-octo-soundcard.c
+ create mode 100644 sound/soc/bcm/audioinjector-pi-soundcard.c
+ create mode 100644 sound/soc/bcm/audiosense-pi.c
+ create mode 100644 sound/soc/bcm/digidac1-soundcard.c
+ create mode 100644 sound/soc/bcm/dionaudio_loco-v2.c
+ create mode 100644 sound/soc/bcm/dionaudio_loco.c
+ create mode 100644 sound/soc/bcm/fe-pi-audio.c
+ create mode 100644 sound/soc/bcm/googlevoicehat-codec.c
+ create mode 100644 sound/soc/bcm/hifiberry_dacplus.c
+ create mode 100644 sound/soc/bcm/hifiberry_dacplusadc.c
+ create mode 100644 sound/soc/bcm/hifiberry_dacplusadcpro.c
+ create mode 100644 sound/soc/bcm/hifiberry_dacplusdsp.c
+ create mode 100644 sound/soc/bcm/hifiberry_dacplushd.c
+ create mode 100644 sound/soc/bcm/i-sabre-q2m.c
+ create mode 100644 sound/soc/bcm/iqaudio-codec.c
+ create mode 100644 sound/soc/bcm/iqaudio-dac.c
+ create mode 100644 sound/soc/bcm/justboom-both.c
+ create mode 100644 sound/soc/bcm/justboom-dac.c
+ create mode 100644 sound/soc/bcm/pifi-40.c
+ create mode 100644 sound/soc/bcm/pisound.c
+ create mode 100644 sound/soc/bcm/rpi-cirrus.c
+ create mode 100644 sound/soc/bcm/rpi-proto.c
+ create mode 100644 sound/soc/bcm/rpi-simple-soundcard.c
+ create mode 100644 sound/soc/bcm/rpi-wm8804-soundcard.c
+ create mode 100644 sound/soc/codecs/i-sabre-codec.c
+ create mode 100644 sound/soc/codecs/i-sabre-codec.h
+ create mode 100644 sound/soc/codecs/ma120x0p.c
+ create mode 100644 sound/soc/codecs/pcm1794a.c
+ create mode 100644 sound/soc/codecs/tas5713.c
+ create mode 100644 sound/soc/codecs/tas5713.h
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
+@@ -0,0 +1,463 @@
++Device tree binding vendor prefix registry.  Keep list in alphabetical order.
++
++This isn't an exhaustive list, but you should add new prefixes to it before
++using them to avoid name-space collisions.
++
++abilis	Abilis Systems
++abracon	Abracon Corporation
++actions	Actions Semiconductor Co., Ltd.
++active-semi	Active-Semi International Inc
++ad	Avionic Design GmbH
++adafruit	Adafruit Industries, LLC
++adapteva	Adapteva, Inc.
++adaptrum	Adaptrum, Inc.
++adh	AD Holdings Plc.
++adi	Analog Devices, Inc.
++advantech	Advantech Corporation
++aeroflexgaisler	Aeroflex Gaisler AB
++al	Annapurna Labs
++allo	Allo.com
++allwinner	Allwinner Technology Co., Ltd.
++alphascale	AlphaScale Integrated Circuits Systems, Inc.
++altr	Altera Corp.
++amarula	Amarula Solutions
++amazon	Amazon.com, Inc.
++amcc	Applied Micro Circuits Corporation (APM, formally AMCC)
++amd	Advanced Micro Devices (AMD), Inc.
++amediatech	Shenzhen Amediatech Technology Co., Ltd
++amlogic	Amlogic, Inc.
++ampire	Ampire Co., Ltd.
++ams	AMS AG
++amstaos	AMS-Taos Inc.
++analogix	Analogix Semiconductor, Inc.
++andestech	Andes Technology Corporation
++apm	Applied Micro Circuits Corporation (APM)
++aptina	Aptina Imaging
++arasan	Arasan Chip Systems
++archermind ArcherMind Technology (Nanjing) Co., Ltd.
++arctic	Arctic Sand
++aries	Aries Embedded GmbH
++arm	ARM Ltd.
++armadeus	ARMadeus Systems SARL
++arrow	Arrow Electronics
++artesyn	Artesyn Embedded Technologies Inc.
++asahi-kasei	Asahi Kasei Corp.
++aspeed	ASPEED Technology Inc.
++asus	AsusTek Computer Inc.
++atlas	Atlas Scientific LLC
++atmel	Atmel Corporation
++auo	AU Optronics Corporation
++auvidea Auvidea GmbH
++avago	Avago Technologies
++avia	avia semiconductor
++avic	Shanghai AVIC Optoelectronics Co., Ltd.
++avnet	Avnet, Inc.
++axentia	Axentia Technologies AB
++axis	Axis Communications AB
++bananapi BIPAI KEJI LIMITED
++bhf	Beckhoff Automation GmbH & Co. KG
++bitmain	Bitmain Technologies
++blokaslabs	Vilniaus Blokas UAB
++boe	BOE Technology Group Co., Ltd.
++bosch	Bosch Sensortec GmbH
++boundary	Boundary Devices Inc.
++brcm	Broadcom Corporation
++buffalo	Buffalo, Inc.
++bticino Bticino International
++calxeda	Calxeda
++capella	Capella Microsystems, Inc
++cascoda	Cascoda, Ltd.
++catalyst	Catalyst Semiconductor, Inc.
++cavium	Cavium, Inc.
++cdns	Cadence Design Systems Inc.
++cdtech	CDTech(H.K.) Electronics Limited
++ceva	Ceva, Inc.
++chipidea	Chipidea, Inc
++chipone		ChipOne
++chipspark	ChipSPARK
++chrp	Common Hardware Reference Platform
++chunghwa	Chunghwa Picture Tubes Ltd.
++ciaa	Computadora Industrial Abierta Argentina
++cirrus	Cirrus Logic, Inc.
++cloudengines	Cloud Engines, Inc.
++cnm	Chips&Media, Inc.
++cnxt	Conexant Systems, Inc.
++compulab	CompuLab Ltd.
++cortina	Cortina Systems, Inc.
++cosmic	Cosmic Circuits
++crane	Crane Connectivity Solutions
++creative	Creative Technology Ltd
++crystalfontz	Crystalfontz America, Inc.
++csky	Hangzhou C-SKY Microsystems Co., Ltd
++cubietech	Cubietech, Ltd.
++cypress	Cypress Semiconductor Corporation
++cznic	CZ.NIC, z.s.p.o.
++dallas	Maxim Integrated Products (formerly Dallas Semiconductor)
++dataimage	DataImage, Inc.
++davicom	DAVICOM Semiconductor, Inc.
++delta	Delta Electronics, Inc.
++denx	Denx Software Engineering
++devantech	Devantech, Ltd.
++dh	DH electronics GmbH
++digi	Digi International Inc.
++digilent	Diglent, Inc.
++dioo	Dioo Microcircuit Co., Ltd
++dlc	DLC Display Co., Ltd.
++dlg	Dialog Semiconductor
++dlink	D-Link Corporation
++dmo	Data Modul AG
++domintech	Domintech Co., Ltd.
++dongwoon	Dongwoon Anatech
++dptechnics	DPTechnics
++dragino	Dragino Technology Co., Limited
++ea	Embedded Artists AB
++ebs-systart EBS-SYSTART GmbH
++ebv	EBV Elektronik
++eckelmann	Eckelmann AG
++edt	Emerging Display Technologies
++eeti	eGalax_eMPIA Technology Inc
++elan	Elan Microelectronic Corp.
++elgin	Elgin S/A.
++embest	Shenzhen Embest Technology Co., Ltd.
++emlid	Emlid, Ltd.
++emmicro	EM Microelectronic
++emtrion	emtrion GmbH
++endless	Endless Mobile, Inc.
++energymicro	Silicon Laboratories (formerly Energy Micro AS)
++engicam	Engicam S.r.l.
++epcos	EPCOS AG
++epfl	Ecole Polytechnique Fédérale de Lausanne
++epson	Seiko Epson Corp.
++est	ESTeem Wireless Modems
++ettus	NI Ettus Research
++eukrea  Eukréa Electromatique
++everest	Everest Semiconductor Co. Ltd.
++everspin	Everspin Technologies, Inc.
++exar	Exar Corporation
++excito	Excito
++ezchip	EZchip Semiconductor
++facebook	Facebook
++fairphone	Fairphone B.V.
++faraday	Faraday Technology Corporation
++fastrax	Fastrax Oy
++fcs	Fairchild Semiconductor
++feiyang	Shenzhen Fly Young Technology Co.,LTD.
++firefly	Firefly
++focaltech	FocalTech Systems Co.,Ltd
++friendlyarm	Guangzhou FriendlyARM Computer Tech Co., Ltd
++fsl	Freescale Semiconductor
++fujitsu	Fujitsu Ltd.
++gateworks	Gateworks Corporation
++gcw Game Consoles Worldwide
++ge	General Electric Company
++geekbuying	GeekBuying
++gef	GE Fanuc Intelligent Platforms Embedded Systems, Inc.
++GEFanuc	GE Fanuc Intelligent Platforms Embedded Systems, Inc.
++geniatech	Geniatech, Inc.
++giantec	Giantec Semiconductor, Inc.
++giantplus	Giantplus Technology Co., Ltd.
++globalscale	Globalscale Technologies, Inc.
++globaltop	GlobalTop Technology, Inc.
++gmt	Global Mixed-mode Technology, Inc.
++goodix	Shenzhen Huiding Technology Co., Ltd.
++google	Google, Inc.
++grinn	Grinn
++grmn	Garmin Limited
++gumstix	Gumstix, Inc.
++gw	Gateworks Corporation
++hannstar	HannStar Display Corporation
++haoyu	Haoyu Microelectronic Co. Ltd.
++hardkernel	Hardkernel Co., Ltd
++hideep	HiDeep Inc.
++himax	Himax Technologies, Inc.
++hisilicon	Hisilicon Limited.
++hit	Hitachi Ltd.
++hitex	Hitex Development Tools
++holt	Holt Integrated Circuits, Inc.
++honeywell	Honeywell
++hp	Hewlett Packard
++holtek	Holtek Semiconductor, Inc.
++hwacom	HwaCom Systems Inc.
++i2se	I2SE GmbH
++ibm	International Business Machines (IBM)
++icplus	IC Plus Corp.
++idt	Integrated Device Technologies, Inc.
++ifi	Ingenieurburo Fur Ic-Technologie (I/F/I)
++ilitek	ILI Technology Corporation (ILITEK)
++img	Imagination Technologies Ltd.
++infineon Infineon Technologies
++inforce	Inforce Computing
++ingenic	Ingenic Semiconductor
++innolux	Innolux Corporation
++inside-secure	INSIDE Secure
++intel	Intel Corporation
++intercontrol	Inter Control Group
++invensense	InvenSense Inc.
++inversepath	Inverse Path
++iom	Iomega Corporation
++isee	ISEE 2007 S.L.
++isil	Intersil
++issi	Integrated Silicon Solutions Inc.
++itead	ITEAD Intelligent Systems Co.Ltd
++iwave  iWave Systems Technologies Pvt. Ltd.
++jdi	Japan Display Inc.
++jedec	JEDEC Solid State Technology Association
++jianda	Jiandangjing Technology Co., Ltd.
++karo	Ka-Ro electronics GmbH
++keithkoep	Keith & Koep GmbH
++keymile	Keymile GmbH
++khadas	Khadas
++kiebackpeter    Kieback & Peter GmbH
++kinetic Kinetic Technologies
++kingdisplay	King & Display Technology Co., Ltd.
++kingnovel	Kingnovel Technology Co., Ltd.
++koe	Kaohsiung Opto-Electronics Inc.
++kosagi	Sutajio Ko-Usagi PTE Ltd.
++kyo	Kyocera Corporation
++lacie	LaCie
++laird	Laird PLC
++lantiq	Lantiq Semiconductor
++lattice	Lattice Semiconductor
++lego	LEGO Systems A/S
++lemaker	Shenzhen LeMaker Technology Co., Ltd.
++lenovo	Lenovo Group Ltd.
++lg	LG Corporation
++libretech	Shenzhen Libre Technology Co., Ltd
++licheepi	Lichee Pi
++linaro	Linaro Limited
++linksys	Belkin International, Inc. (Linksys)
++linux	Linux-specific binding
++linx	Linx Technologies
++lltc	Linear Technology Corporation
++logicpd	Logic PD, Inc.
++lsi	LSI Corp. (LSI Logic)
++lwn	Liebherr-Werk Nenzing GmbH
++macnica	Macnica Americas
++marvell	Marvell Technology Group Ltd.
++maxim	Maxim Integrated Products
++mbvl	Mobiveil Inc.
++mcube	mCube
++meas	Measurement Specialties
++mediatek	MediaTek Inc.
++megachips	MegaChips
++mele	Shenzhen MeLE Digital Technology Ltd.
++melexis	Melexis N.V.
++melfas	MELFAS Inc.
++mellanox	Mellanox Technologies
++memsic	MEMSIC Inc.
++merrii	Merrii Technology Co., Ltd.
++micrel	Micrel Inc.
++microchip	Microchip Technology Inc.
++microcrystal	Micro Crystal AG
++micron	Micron Technology Inc.
++mikroe		MikroElektronika d.o.o.
++minix	MINIX Technology Ltd.
++miramems	MiraMEMS Sensing Technology Co., Ltd.
++mitsubishi	Mitsubishi Electric Corporation
++mosaixtech	Mosaix Technologies, Inc.
++motorola	Motorola, Inc.
++moxa	Moxa Inc.
++mpl	MPL AG
++mqmaker	mqmaker Inc.
++mscc	Microsemi Corporation
++msi	Micro-Star International Co. Ltd.
++mti	Imagination Technologies Ltd. (formerly MIPS Technologies Inc.)
++multi-inno	Multi-Inno Technology Co.,Ltd
++mundoreader	Mundo Reader S.L.
++murata	Murata Manufacturing Co., Ltd.
++mxicy	Macronix International Co., Ltd.
++myir	MYIR Tech Limited
++national	National Semiconductor
++nec	NEC LCD Technologies, Ltd.
++neonode		Neonode Inc.
++netgear	NETGEAR
++netlogic	Broadcom Corporation (formerly NetLogic Microsystems)
++netron-dy	Netron DY
++netxeon		Shenzhen Netxeon Technology CO., LTD
++nexbox	Nexbox
++nextthing	Next Thing Co.
++newhaven	Newhaven Display International
++ni	National Instruments
++nintendo	Nintendo
++nlt	NLT Technologies, Ltd.
++nokia	Nokia
++nordic	Nordic Semiconductor
++novtech NovTech, Inc.
++nutsboard	NutsBoard
++nuvoton	Nuvoton Technology Corporation
++nvd	New Vision Display
++nvidia	NVIDIA
++nxp	NXP Semiconductors
++okaya	Okaya Electric America, Inc.
++oki	Oki Electric Industry Co., Ltd.
++olimex	OLIMEX Ltd.
++olpc	One Laptop Per Child
++onion	Onion Corporation
++onnn	ON Semiconductor Corp.
++ontat	On Tat Industrial Company
++opalkelly	Opal Kelly Incorporated
++opencores	OpenCores.org
++openrisc	OpenRISC.io
++option	Option NV
++oranth	Shenzhen Oranth Technology Co., Ltd.
++ORCL	Oracle Corporation
++orisetech	Orise Technology
++ortustech	Ortus Technology Co., Ltd.
++ovti	OmniVision Technologies
++oxsemi	Oxford Semiconductor, Ltd.
++panasonic	Panasonic Corporation
++parade	Parade Technologies Inc.
++pda	Precision Design Associates, Inc.
++pericom	Pericom Technology Inc.
++pervasive	Pervasive Displays, Inc.
++phicomm PHICOMM Co., Ltd.
++phytec	PHYTEC Messtechnik GmbH
++picochip	Picochip Ltd
++pine64	Pine64
++pixcir  PIXCIR MICROELECTRONICS Co., Ltd
++plantower Plantower Co., Ltd
++plathome	Plat'Home Co., Ltd.
++plda	PLDA
++plx	Broadcom Corporation (formerly PLX Technology)
++pni	PNI Sensor Corporation
++portwell	Portwell Inc.
++poslab	Poslab Technology Co., Ltd.
++powervr	PowerVR (deprecated, use img)
++probox2	PROBOX2 (by W2COMP Co., Ltd.)
++pulsedlight	PulsedLight, Inc
++qca	Qualcomm Atheros, Inc.
++qcom	Qualcomm Technologies, Inc
++qemu	QEMU, a generic and open source machine emulator and virtualizer
++qi	Qi Hardware
++qiaodian	QiaoDian XianShi Corporation
++qnap	QNAP Systems, Inc.
++radxa	Radxa
++raidsonic	RaidSonic Technology GmbH
++ralink	Mediatek/Ralink Technology Corp.
++ramtron	Ramtron International
++raspberrypi	Raspberry Pi Foundation
++raydium	Raydium Semiconductor Corp.
++rda	Unisoc Communications, Inc.
++realtek Realtek Semiconductor Corp.
++renesas	Renesas Electronics Corporation
++richtek	Richtek Technology Corporation
++ricoh	Ricoh Co. Ltd.
++rikomagic	Rikomagic Tech Corp. Ltd
++riscv	RISC-V Foundation
++rockchip	Fuzhou Rockchip Electronics Co., Ltd
++rohm	ROHM Semiconductor Co., Ltd
++roofull	Shenzhen Roofull Technology Co, Ltd
++samsung	Samsung Semiconductor
++samtec	Samtec/Softing company
++sancloud	Sancloud Ltd
++sandisk	Sandisk Corporation
++sbs	Smart Battery System
++schindler	Schindler
++seagate	Seagate Technology PLC
++semtech	Semtech Corporation
++sensirion	Sensirion AG
++sff	Small Form Factor Committee
++sgd	Solomon Goldentek Display Corporation
++sgx	SGX Sensortech
++sharp	Sharp Corporation
++shimafuji	Shimafuji Electric, Inc.
++si-en	Si-En Technology Ltd.
++sifive	SiFive, Inc.
++sigma	Sigma Designs, Inc.
++sii	Seiko Instruments, Inc.
++sil	Silicon Image
++silabs	Silicon Laboratories
++silead	Silead Inc.
++silergy	Silergy Corp.
++siliconmitus	Silicon Mitus, Inc.
++simtek
++sirf	SiRF Technology, Inc.
++sis	Silicon Integrated Systems Corp.
++sitronix	Sitronix Technology Corporation
++skyworks	Skyworks Solutions, Inc.
++smsc	Standard Microsystems Corporation
++snps	Synopsys, Inc.
++socionext	Socionext Inc.
++solidrun	SolidRun
++solomon        Solomon Systech Limited
++sony	Sony Corporation
++spansion	Spansion Inc.
++sprd	Spreadtrum Communications Inc.
++sst	Silicon Storage Technology, Inc.
++st	STMicroelectronics
++starry	Starry Electronic Technology (ShenZhen) Co., LTD
++startek	Startek
++ste	ST-Ericsson
++stericsson	ST-Ericsson
++summit	Summit microelectronics
++sunchip	Shenzhen Sunchip Technology Co., Ltd
++SUNW	Sun Microsystems, Inc
++swir	Sierra Wireless
++syna	Synaptics Inc.
++synology	Synology, Inc.
++tbs	TBS Technologies
++tbs-biometrics	Touchless Biometric Systems AG
++tcg	Trusted Computing Group
++tcl	Toby Churchill Ltd.
++technexion	TechNexion
++technologic	Technologic Systems
++tempo	Tempo Semiconductor
++techstar	Shenzhen Techstar Electronics Co., Ltd.
++terasic	Terasic Inc.
++thine	THine Electronics, Inc.
++ti	Texas Instruments
++tianma	Tianma Micro-electronics Co., Ltd.
++tlm	Trusted Logic Mobility
++tmt	Tecon Microprocessor Technologies, LLC.
++topeet  Topeet
++toradex	Toradex AG
++toshiba	Toshiba Corporation
++toumaz	Toumaz
++tpk	TPK U.S.A. LLC
++tplink	TP-LINK Technologies Co., Ltd.
++tpo	TPO
++tronfy	Tronfy
++tronsmart	Tronsmart
++truly	Truly Semiconductors Limited
++tsd	Theobroma Systems Design und Consulting GmbH
++tyan	Tyan Computer Corporation
++u-blox	u-blox
++ucrobotics	uCRobotics
++ubnt	Ubiquiti Networks
++udoo	Udoo
++uniwest	United Western Technologies Corp (UniWest)
++upisemi	uPI Semiconductor Corp.
++urt	United Radiant Technology Corporation
++usi	Universal Scientific Industrial Co., Ltd.
++v3	V3 Semiconductor
++vamrs	Vamrs Ltd.
++variscite	Variscite Ltd.
++via	VIA Technologies, Inc.
++virtio	Virtual I/O Device Specification, developed by the OASIS consortium
++vishay	Vishay Intertechnology, Inc
++vitesse	Vitesse Semiconductor Corporation
++vivante	Vivante Corporation
++vocore VoCore Studio
++voipac	Voipac Technologies s.r.o.
++vot	Vision Optical Technology Co., Ltd.
++wd	Western Digital Corp.
++wetek	WeTek Electronics, limited.
++wexler	Wexler
++whwave  Shenzhen whwave Electronics, Inc.
++wi2wi	Wi2Wi, Inc.
++winbond Winbond Electronics corp.
++winstar	Winstar Display Corp.
++wlf	Wolfson Microelectronics
++wm	Wondermedia Technologies, Inc.
++x-powers	X-Powers
++xes	Extreme Engineering Solutions (X-ES)
++xillybus	Xillybus Ltd.
++xlnx	Xilinx
++xunlong	Shenzhen Xunlong Software CO.,Limited
++ysoft	Y Soft Corporation a.s.
++zarlink	Zarlink Semiconductor
++zeitec	ZEITEC Semiconductor Co., LTD.
++zidoo	Shenzhen Zidoo Technology Co., Ltd.
++zii	Zodiac Inflight Innovations
++zte	ZTE Corp.
++zyxel	ZyXEL Communications Corp.
+--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
++++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
+@@ -173,6 +173,8 @@ patternProperties:
+     description: Beckhoff Automation GmbH & Co. KG
+   "^bitmain,.*":
+     description: Bitmain Technologies
++  "^blokaslabs,.*":
++    description: Vilniaus Blokas UAB
+   "^blutek,.*":
+     description: BluTek Power
+   "^boe,.*":
+--- a/drivers/clk/Kconfig
++++ b/drivers/clk/Kconfig
+@@ -90,6 +90,12 @@ config COMMON_CLK_HI655X
+ 	  multi-function device has one fixed-rate oscillator, clocked
+ 	  at 32KHz.
+ 
++config COMMON_CLK_HIFIBERRY_DACPLUSHD
++	tristate
++
++config COMMON_CLK_HIFIBERRY_DACPRO
++	tristate
++
+ config COMMON_CLK_SCMI
+ 	tristate "Clock driver controlled via SCMI interface"
+ 	depends on ARM_SCMI_PROTOCOL || COMPILE_TEST
+--- a/drivers/clk/Makefile
++++ b/drivers/clk/Makefile
+@@ -17,6 +17,7 @@ endif
+ 
+ # hardware specific clock types
+ # please keep this section sorted lexicographically by file path name
++obj-$(CONFIG_SND_BCM2708_SOC_ALLO_BOSS_DAC)	+= clk-allo-dac.o
+ obj-$(CONFIG_MACH_ASM9260)		+= clk-asm9260.o
+ obj-$(CONFIG_COMMON_CLK_AXI_CLKGEN)	+= clk-axi-clkgen.o
+ obj-$(CONFIG_ARCH_AXXIA)		+= clk-axm5516.o
+@@ -38,6 +39,8 @@ obj-$(CONFIG_CLK_HSDK)			+= clk-hsdk-pll
+ obj-$(CONFIG_COMMON_CLK_K210)		+= clk-k210.o
+ obj-$(CONFIG_LMK04832)			+= clk-lmk04832.o
+ obj-$(CONFIG_COMMON_CLK_LOCHNAGAR)	+= clk-lochnagar.o
++obj-$(CONFIG_COMMON_CLK_HIFIBERRY_DACPRO)	+= clk-hifiberry-dacpro.o
++obj-$(CONFIG_COMMON_CLK_HIFIBERRY_DACPLUSHD)	+= clk-hifiberry-dachd.o
+ obj-$(CONFIG_COMMON_CLK_MAX77686)	+= clk-max77686.o
+ obj-$(CONFIG_COMMON_CLK_MAX9485)	+= clk-max9485.o
+ obj-$(CONFIG_ARCH_MILBEAUT_M10V)	+= clk-milbeaut.o
+--- /dev/null
++++ b/drivers/clk/clk-allo-dac.c
+@@ -0,0 +1,161 @@
++/*
++ * Clock Driver for Allo DAC
++ *
++ * Author:	Baswaraj K <jaikumar@cem-solutions.net>
++ *		Copyright 2016
++ *		based on code by Stuart MacLean
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/clk-provider.h>
++#include <linux/clkdev.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/slab.h>
++#include <linux/platform_device.h>
++
++/* Clock rate of CLK44EN attached to GPIO6 pin */
++#define CLK_44EN_RATE 45158400UL
++/* Clock rate of CLK48EN attached to GPIO3 pin */
++#define CLK_48EN_RATE 49152000UL
++
++/**
++ * struct allo_dac_clk - Common struct to the Allo DAC
++ * @hw: clk_hw for the common clk framework
++ * @mode: 0 => CLK44EN, 1 => CLK48EN
++ */
++struct clk_allo_hw {
++	struct clk_hw hw;
++	uint8_t mode;
++};
++
++#define to_allo_clk(_hw) container_of(_hw, struct clk_allo_hw, hw)
++
++static const struct of_device_id clk_allo_dac_dt_ids[] = {
++	{ .compatible = "allo,dac-clk",},
++	{ }
++};
++MODULE_DEVICE_TABLE(of, clk_allo_dac_dt_ids);
++
++static unsigned long clk_allo_dac_recalc_rate(struct clk_hw *hw,
++	unsigned long parent_rate)
++{
++	return (to_allo_clk(hw)->mode == 0) ? CLK_44EN_RATE :
++		CLK_48EN_RATE;
++}
++
++static long clk_allo_dac_round_rate(struct clk_hw *hw,
++	unsigned long rate, unsigned long *parent_rate)
++{
++	long actual_rate;
++
++	if (rate <= CLK_44EN_RATE) {
++		actual_rate = (long)CLK_44EN_RATE;
++	} else if (rate >= CLK_48EN_RATE) {
++		actual_rate = (long)CLK_48EN_RATE;
++	} else {
++		long diff44Rate = (long)(rate - CLK_44EN_RATE);
++		long diff48Rate = (long)(CLK_48EN_RATE - rate);
++
++		if (diff44Rate < diff48Rate)
++			actual_rate = (long)CLK_44EN_RATE;
++		else
++			actual_rate = (long)CLK_48EN_RATE;
++	}
++	return actual_rate;
++}
++
++
++static int clk_allo_dac_set_rate(struct clk_hw *hw,
++	unsigned long rate, unsigned long parent_rate)
++{
++	unsigned long actual_rate;
++	struct clk_allo_hw *clk = to_allo_clk(hw);
++
++	actual_rate = (unsigned long)clk_allo_dac_round_rate(hw, rate,
++		&parent_rate);
++	clk->mode = (actual_rate == CLK_44EN_RATE) ? 0 : 1;
++	return 0;
++}
++
++
++const struct clk_ops clk_allo_dac_rate_ops = {
++	.recalc_rate = clk_allo_dac_recalc_rate,
++	.round_rate = clk_allo_dac_round_rate,
++	.set_rate = clk_allo_dac_set_rate,
++};
++
++static int clk_allo_dac_probe(struct platform_device *pdev)
++{
++	int ret;
++	struct clk_allo_hw *proclk;
++	struct clk *clk;
++	struct device *dev;
++	struct clk_init_data init;
++
++	dev = &pdev->dev;
++
++	proclk = kzalloc(sizeof(struct clk_allo_hw), GFP_KERNEL);
++	if (!proclk)
++		return -ENOMEM;
++
++	init.name = "clk-allo-dac";
++	init.ops = &clk_allo_dac_rate_ops;
++	init.flags = 0;
++	init.parent_names = NULL;
++	init.num_parents = 0;
++
++	proclk->mode = 0;
++	proclk->hw.init = &init;
++
++	clk = devm_clk_register(dev, &proclk->hw);
++	if (!IS_ERR(clk)) {
++		ret = of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
++			clk);
++	} else {
++		dev_err(dev, "Fail to register clock driver\n");
++		kfree(proclk);
++		ret = PTR_ERR(clk);
++	}
++	return ret;
++}
++
++static int clk_allo_dac_remove(struct platform_device *pdev)
++{
++	of_clk_del_provider(pdev->dev.of_node);
++	return 0;
++}
++
++static struct platform_driver clk_allo_dac_driver = {
++	.probe = clk_allo_dac_probe,
++	.remove = clk_allo_dac_remove,
++	.driver = {
++		.name = "clk-allo-dac",
++		.of_match_table = clk_allo_dac_dt_ids,
++	},
++};
++
++static int __init clk_allo_dac_init(void)
++{
++	return platform_driver_register(&clk_allo_dac_driver);
++}
++core_initcall(clk_allo_dac_init);
++
++static void __exit clk_allo_dac_exit(void)
++{
++	platform_driver_unregister(&clk_allo_dac_driver);
++}
++module_exit(clk_allo_dac_exit);
++
++MODULE_DESCRIPTION("Allo DAC clock driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:clk-allo-dac");
+--- /dev/null
++++ b/drivers/clk/clk-hifiberry-dachd.c
+@@ -0,0 +1,333 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Clock Driver for HiFiBerry DAC+ HD
++ *
++ * Author: Joerg Schambacher, i2Audio GmbH for HiFiBerry
++ *         Copyright 2020
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/clk-provider.h>
++#include <linux/clk.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/slab.h>
++#include <linux/platform_device.h>
++#include <linux/i2c.h>
++#include <linux/regmap.h>
++
++#define NO_PLL_RESET			0
++#define PLL_RESET			1
++#define HIFIBERRY_PLL_MAX_REGISTER	256
++#define DEFAULT_RATE			44100
++
++static struct reg_default hifiberry_pll_reg_defaults[] = {
++	{0x02, 0x53}, {0x03, 0x00}, {0x07, 0x20}, {0x0F, 0x00},
++	{0x10, 0x0D}, {0x11, 0x1D}, {0x12, 0x0D}, {0x13, 0x8C},
++	{0x14, 0x8C}, {0x15, 0x8C}, {0x16, 0x8C}, {0x17, 0x8C},
++	{0x18, 0x2A}, {0x1C, 0x00}, {0x1D, 0x0F}, {0x1F, 0x00},
++	{0x2A, 0x00}, {0x2C, 0x00}, {0x2F, 0x00}, {0x30, 0x00},
++	{0x31, 0x00}, {0x32, 0x00}, {0x34, 0x00}, {0x37, 0x00},
++	{0x38, 0x00}, {0x39, 0x00}, {0x3A, 0x00}, {0x3B, 0x01},
++	{0x3E, 0x00}, {0x3F, 0x00}, {0x40, 0x00}, {0x41, 0x00},
++	{0x5A, 0x00}, {0x5B, 0x00}, {0x95, 0x00}, {0x96, 0x00},
++	{0x97, 0x00}, {0x98, 0x00}, {0x99, 0x00}, {0x9A, 0x00},
++	{0x9B, 0x00}, {0xA2, 0x00}, {0xA3, 0x00}, {0xA4, 0x00},
++	{0xB7, 0x92},
++	{0x1A, 0x3D}, {0x1B, 0x09}, {0x1E, 0xF3}, {0x20, 0x13},
++	{0x21, 0x75}, {0x2B, 0x04}, {0x2D, 0x11}, {0x2E, 0xE0},
++	{0x3D, 0x7A},
++	{0x35, 0x9D}, {0x36, 0x00}, {0x3C, 0x42},
++	{ 177, 0xAC},
++};
++static struct reg_default common_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
++static int num_common_pll_regs;
++static struct reg_default dedicated_192k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
++static int num_dedicated_192k_pll_regs;
++static struct reg_default dedicated_96k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
++static int num_dedicated_96k_pll_regs;
++static struct reg_default dedicated_48k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
++static int num_dedicated_48k_pll_regs;
++static struct reg_default dedicated_176k4_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
++static int num_dedicated_176k4_pll_regs;
++static struct reg_default dedicated_88k2_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
++static int num_dedicated_88k2_pll_regs;
++static struct reg_default dedicated_44k1_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
++static int num_dedicated_44k1_pll_regs;
++
++/**
++ * struct clk_hifiberry_drvdata - Common struct to the HiFiBerry DAC HD Clk
++ * @hw: clk_hw for the common clk framework
++ */
++struct clk_hifiberry_drvdata {
++	struct regmap *regmap;
++	struct clk *clk;
++	struct clk_hw hw;
++	unsigned long rate;
++};
++
++#define to_hifiberry_clk(_hw) \
++	container_of(_hw, struct clk_hifiberry_drvdata, hw)
++
++static int clk_hifiberry_dachd_write_pll_regs(struct regmap *regmap,
++				struct reg_default *regs,
++				int num, int do_pll_reset)
++{
++	int i;
++	int ret = 0;
++	char pll_soft_reset[] = { 177, 0xAC, };
++
++	for (i = 0; i < num; i++) {
++		ret |= regmap_write(regmap, regs[i].reg, regs[i].def);
++		if (ret)
++			return ret;
++	}
++	if (do_pll_reset) {
++		ret |= regmap_write(regmap, pll_soft_reset[0],
++						pll_soft_reset[1]);
++		mdelay(10);
++	}
++	return ret;
++}
++
++static unsigned long clk_hifiberry_dachd_recalc_rate(struct clk_hw *hw,
++	unsigned long parent_rate)
++{
++	return to_hifiberry_clk(hw)->rate;
++}
++
++static long clk_hifiberry_dachd_round_rate(struct clk_hw *hw,
++	unsigned long rate, unsigned long *parent_rate)
++{
++	return rate;
++}
++
++static int clk_hifiberry_dachd_set_rate(struct clk_hw *hw,
++	unsigned long rate, unsigned long parent_rate)
++{
++	int ret;
++	struct clk_hifiberry_drvdata *drvdata = to_hifiberry_clk(hw);
++
++	switch (rate) {
++	case 44100:
++		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
++			dedicated_44k1_pll_regs, num_dedicated_44k1_pll_regs,
++			PLL_RESET);
++		break;
++	case 88200:
++		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
++			dedicated_88k2_pll_regs, num_dedicated_88k2_pll_regs,
++			PLL_RESET);
++		break;
++	case 176400:
++		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
++			dedicated_176k4_pll_regs, num_dedicated_176k4_pll_regs,
++			PLL_RESET);
++		break;
++	case 48000:
++		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
++			dedicated_48k_pll_regs,	num_dedicated_48k_pll_regs,
++			PLL_RESET);
++		break;
++	case 96000:
++		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
++			dedicated_96k_pll_regs,	num_dedicated_96k_pll_regs,
++			PLL_RESET);
++		break;
++	case 192000:
++		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
++			dedicated_192k_pll_regs, num_dedicated_192k_pll_regs,
++			PLL_RESET);
++		break;
++	default:
++		ret = -EINVAL;
++		break;
++	}
++	to_hifiberry_clk(hw)->rate = rate;
++
++	return ret;
++}
++
++const struct clk_ops clk_hifiberry_dachd_rate_ops = {
++	.recalc_rate = clk_hifiberry_dachd_recalc_rate,
++	.round_rate = clk_hifiberry_dachd_round_rate,
++	.set_rate = clk_hifiberry_dachd_set_rate,
++};
++
++static int clk_hifiberry_get_prop_values(struct device *dev,
++					char *prop_name,
++					struct reg_default *regs)
++{
++	int ret;
++	int i;
++	u8 tmp[2 * HIFIBERRY_PLL_MAX_REGISTER];
++
++	ret = of_property_read_variable_u8_array(dev->of_node, prop_name,
++			tmp, 0, 2 * HIFIBERRY_PLL_MAX_REGISTER);
++	if (ret < 0)
++		return ret;
++	if (ret & 1) {
++		dev_err(dev,
++			"%s <%s> -> #%i odd number of bytes for reg/val pairs!",
++			__func__,
++			prop_name,
++			ret);
++		return -EINVAL;
++	}
++	ret /= 2;
++	for (i = 0; i < ret; i++) {
++		regs[i].reg = (u32)tmp[2 * i];
++		regs[i].def = (u32)tmp[2 * i + 1];
++	}
++	return ret;
++}
++
++
++static int clk_hifiberry_dachd_dt_parse(struct device *dev)
++{
++	num_common_pll_regs = clk_hifiberry_get_prop_values(dev,
++				"common_pll_regs", common_pll_regs);
++	num_dedicated_44k1_pll_regs = clk_hifiberry_get_prop_values(dev,
++				"44k1_pll_regs", dedicated_44k1_pll_regs);
++	num_dedicated_88k2_pll_regs = clk_hifiberry_get_prop_values(dev,
++				"88k2_pll_regs", dedicated_88k2_pll_regs);
++	num_dedicated_176k4_pll_regs = clk_hifiberry_get_prop_values(dev,
++				"176k4_pll_regs", dedicated_176k4_pll_regs);
++	num_dedicated_48k_pll_regs = clk_hifiberry_get_prop_values(dev,
++				"48k_pll_regs", dedicated_48k_pll_regs);
++	num_dedicated_96k_pll_regs = clk_hifiberry_get_prop_values(dev,
++				"96k_pll_regs", dedicated_96k_pll_regs);
++	num_dedicated_192k_pll_regs = clk_hifiberry_get_prop_values(dev,
++				"192k_pll_regs", dedicated_192k_pll_regs);
++	return 0;
++}
++
++
++static int clk_hifiberry_dachd_remove(struct device *dev)
++{
++	of_clk_del_provider(dev->of_node);
++	return 0;
++}
++
++const struct regmap_config hifiberry_pll_regmap = {
++	.reg_bits = 8,
++	.val_bits = 8,
++	.max_register = HIFIBERRY_PLL_MAX_REGISTER,
++	.reg_defaults = hifiberry_pll_reg_defaults,
++	.num_reg_defaults = ARRAY_SIZE(hifiberry_pll_reg_defaults),
++	.cache_type = REGCACHE_RBTREE,
++};
++EXPORT_SYMBOL_GPL(hifiberry_pll_regmap);
++
++
++static int clk_hifiberry_dachd_i2c_probe(struct i2c_client *i2c,
++			     const struct i2c_device_id *id)
++{
++	struct clk_hifiberry_drvdata *hdclk;
++	int ret = 0;
++	struct clk_init_data init;
++	struct device *dev = &i2c->dev;
++	struct device_node *dev_node = dev->of_node;
++	struct regmap_config config = hifiberry_pll_regmap;
++
++	hdclk = devm_kzalloc(&i2c->dev,
++			sizeof(struct clk_hifiberry_drvdata), GFP_KERNEL);
++	if (!hdclk)
++		return -ENOMEM;
++
++	i2c_set_clientdata(i2c, hdclk);
++
++	hdclk->regmap = devm_regmap_init_i2c(i2c, &config);
++
++	if (IS_ERR(hdclk->regmap))
++		return PTR_ERR(hdclk->regmap);
++
++	/* start PLL to allow detection of DAC */
++	ret = clk_hifiberry_dachd_write_pll_regs(hdclk->regmap,
++				hifiberry_pll_reg_defaults,
++				ARRAY_SIZE(hifiberry_pll_reg_defaults),
++				PLL_RESET);
++	if (ret)
++		return ret;
++
++	clk_hifiberry_dachd_dt_parse(dev);
++
++	/* restart PLL with configs from DTB */
++	ret = clk_hifiberry_dachd_write_pll_regs(hdclk->regmap, common_pll_regs,
++					num_common_pll_regs, PLL_RESET);
++	if (ret)
++		return ret;
++
++	init.name = "clk-hifiberry-dachd";
++	init.ops = &clk_hifiberry_dachd_rate_ops;
++	init.flags = 0;
++	init.parent_names = NULL;
++	init.num_parents = 0;
++
++	hdclk->hw.init = &init;
++
++	hdclk->clk = devm_clk_register(dev, &hdclk->hw);
++	if (IS_ERR(hdclk->clk)) {
++		dev_err(dev, "unable to register %s\n",	init.name);
++		return PTR_ERR(hdclk->clk);
++	}
++
++	ret = of_clk_add_provider(dev_node, of_clk_src_simple_get, hdclk->clk);
++	if (ret != 0) {
++		dev_err(dev, "Cannot of_clk_add_provider");
++		return ret;
++	}
++
++	ret = clk_set_rate(hdclk->hw.clk, DEFAULT_RATE);
++	if (ret != 0) {
++		dev_err(dev, "Cannot set rate : %d\n",	ret);
++		return -EINVAL;
++	}
++
++	return ret;
++}
++
++static int clk_hifiberry_dachd_i2c_remove(struct i2c_client *i2c)
++{
++	clk_hifiberry_dachd_remove(&i2c->dev);
++	return 0;
++}
++
++static const struct i2c_device_id clk_hifiberry_dachd_i2c_id[] = {
++	{ "dachd-clk", },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, clk_hifiberry_dachd_i2c_id);
++
++static const struct of_device_id clk_hifiberry_dachd_of_match[] = {
++	{ .compatible = "hifiberry,dachd-clk", },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, clk_hifiberry_dachd_of_match);
++
++static struct i2c_driver clk_hifiberry_dachd_i2c_driver = {
++	.probe		= clk_hifiberry_dachd_i2c_probe,
++	.remove		= clk_hifiberry_dachd_i2c_remove,
++	.id_table	= clk_hifiberry_dachd_i2c_id,
++	.driver		= {
++		.name	= "dachd-clk",
++		.of_match_table = of_match_ptr(clk_hifiberry_dachd_of_match),
++	},
++};
++
++module_i2c_driver(clk_hifiberry_dachd_i2c_driver);
++
++
++MODULE_DESCRIPTION("HiFiBerry DAC+ HD clock driver");
++MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:clk-hifiberry-dachd");
+--- /dev/null
++++ b/drivers/clk/clk-hifiberry-dacpro.c
+@@ -0,0 +1,160 @@
++/*
++ * Clock Driver for HiFiBerry DAC Pro
++ *
++ * Author: Stuart MacLean
++ *         Copyright 2015
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/clk-provider.h>
++#include <linux/clkdev.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/slab.h>
++#include <linux/platform_device.h>
++
++/* Clock rate of CLK44EN attached to GPIO6 pin */
++#define CLK_44EN_RATE 22579200UL
++/* Clock rate of CLK48EN attached to GPIO3 pin */
++#define CLK_48EN_RATE 24576000UL
++
++/**
++ * struct hifiberry_dacpro_clk - Common struct to the HiFiBerry DAC Pro
++ * @hw: clk_hw for the common clk framework
++ * @mode: 0 => CLK44EN, 1 => CLK48EN
++ */
++struct clk_hifiberry_hw {
++	struct clk_hw hw;
++	uint8_t mode;
++};
++
++#define to_hifiberry_clk(_hw) container_of(_hw, struct clk_hifiberry_hw, hw)
++
++static const struct of_device_id clk_hifiberry_dacpro_dt_ids[] = {
++	{ .compatible = "hifiberry,dacpro-clk",},
++	{ }
++};
++MODULE_DEVICE_TABLE(of, clk_hifiberry_dacpro_dt_ids);
++
++static unsigned long clk_hifiberry_dacpro_recalc_rate(struct clk_hw *hw,
++	unsigned long parent_rate)
++{
++	return (to_hifiberry_clk(hw)->mode == 0) ? CLK_44EN_RATE :
++		CLK_48EN_RATE;
++}
++
++static long clk_hifiberry_dacpro_round_rate(struct clk_hw *hw,
++	unsigned long rate, unsigned long *parent_rate)
++{
++	long actual_rate;
++
++	if (rate <= CLK_44EN_RATE) {
++		actual_rate = (long)CLK_44EN_RATE;
++	} else if (rate >= CLK_48EN_RATE) {
++		actual_rate = (long)CLK_48EN_RATE;
++	} else {
++		long diff44Rate = (long)(rate - CLK_44EN_RATE);
++		long diff48Rate = (long)(CLK_48EN_RATE - rate);
++
++		if (diff44Rate < diff48Rate)
++			actual_rate = (long)CLK_44EN_RATE;
++		else
++			actual_rate = (long)CLK_48EN_RATE;
++	}
++	return actual_rate;
++}
++
++
++static int clk_hifiberry_dacpro_set_rate(struct clk_hw *hw,
++	unsigned long rate, unsigned long parent_rate)
++{
++	unsigned long actual_rate;
++	struct clk_hifiberry_hw *clk = to_hifiberry_clk(hw);
++
++	actual_rate = (unsigned long)clk_hifiberry_dacpro_round_rate(hw, rate,
++		&parent_rate);
++	clk->mode = (actual_rate == CLK_44EN_RATE) ? 0 : 1;
++	return 0;
++}
++
++
++const struct clk_ops clk_hifiberry_dacpro_rate_ops = {
++	.recalc_rate = clk_hifiberry_dacpro_recalc_rate,
++	.round_rate = clk_hifiberry_dacpro_round_rate,
++	.set_rate = clk_hifiberry_dacpro_set_rate,
++};
++
++static int clk_hifiberry_dacpro_probe(struct platform_device *pdev)
++{
++	int ret;
++	struct clk_hifiberry_hw *proclk;
++	struct clk *clk;
++	struct device *dev;
++	struct clk_init_data init;
++
++	dev = &pdev->dev;
++
++	proclk = kzalloc(sizeof(struct clk_hifiberry_hw), GFP_KERNEL);
++	if (!proclk)
++		return -ENOMEM;
++
++	init.name = "clk-hifiberry-dacpro";
++	init.ops = &clk_hifiberry_dacpro_rate_ops;
++	init.flags = 0;
++	init.parent_names = NULL;
++	init.num_parents = 0;
++
++	proclk->mode = 0;
++	proclk->hw.init = &init;
++
++	clk = devm_clk_register(dev, &proclk->hw);
++	if (!IS_ERR(clk)) {
++		ret = of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
++			clk);
++	} else {
++		dev_err(dev, "Fail to register clock driver\n");
++		kfree(proclk);
++		ret = PTR_ERR(clk);
++	}
++	return ret;
++}
++
++static int clk_hifiberry_dacpro_remove(struct platform_device *pdev)
++{
++	of_clk_del_provider(pdev->dev.of_node);
++	return 0;
++}
++
++static struct platform_driver clk_hifiberry_dacpro_driver = {
++	.probe = clk_hifiberry_dacpro_probe,
++	.remove = clk_hifiberry_dacpro_remove,
++	.driver = {
++		.name = "clk-hifiberry-dacpro",
++		.of_match_table = clk_hifiberry_dacpro_dt_ids,
++	},
++};
++
++static int __init clk_hifiberry_dacpro_init(void)
++{
++	return platform_driver_register(&clk_hifiberry_dacpro_driver);
++}
++core_initcall(clk_hifiberry_dacpro_init);
++
++static void __exit clk_hifiberry_dacpro_exit(void)
++{
++	platform_driver_unregister(&clk_hifiberry_dacpro_driver);
++}
++module_exit(clk_hifiberry_dacpro_exit);
++
++MODULE_DESCRIPTION("HiFiBerry DAC Pro clock driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:clk-hifiberry-dacpro");
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -26,3 +26,294 @@ config SND_BCM63XX_I2S_WHISTLER
+ 	  DSL/PON chips (bcm63158, bcm63178)
+ 
+ 	  If you don't know what to do here, say N
++
++config SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD
++	tristate "Support for Google voiceHAT soundcard"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_VOICEHAT
++	select SND_RPI_SIMPLE_SOUNDCARD
++	help
++          Say Y or M if you want to add support for voiceHAT soundcard.
++
++config SND_BCM2708_SOC_HIFIBERRY_DAC
++        tristate "Support for HifiBerry DAC"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_PCM5102A
++        select SND_RPI_SIMPLE_SOUNDCARD
++        help
++         Say Y or M if you want to add support for HifiBerry DAC.
++
++config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
++        tristate "Support for HifiBerry DAC+"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_PCM512x
++        select SND_SOC_TPA6130A2
++        select COMMON_CLK_HIFIBERRY_DACPRO
++        help
++         Say Y or M if you want to add support for HifiBerry DAC+.
++
++config SND_BCM2708_SOC_HIFIBERRY_DACPLUSHD
++        tristate "Support for HifiBerry DAC+ HD"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_PCM179X_I2C
++        select COMMON_CLK_HIFIBERRY_DACPLUSHD
++        help
++         Say Y or M if you want to add support for HifiBerry DAC+ HD.
++
++config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC
++        tristate "Support for HifiBerry DAC+ADC"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_PCM512x_I2C
++	select SND_SOC_DMIC
++        select COMMON_CLK_HIFIBERRY_DACPRO
++        help
++         Say Y or M if you want to add support for HifiBerry DAC+ADC.
++
++config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO
++        tristate "Support for HifiBerry DAC+ADC PRO"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_PCM512x_I2C
++	select SND_SOC_PCM186X_I2C
++        select COMMON_CLK_HIFIBERRY_DACPRO
++        help
++         Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
++
++config SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP
++        tristate "Support for HifiBerry DAC+DSP"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_RPI_SIMPLE_SOUNDCARD
++        help
++         Say Y or M if you want to add support for HifiBerry DSP-DAC.
++
++config SND_BCM2708_SOC_HIFIBERRY_DIGI
++        tristate "Support for HifiBerry Digi"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_WM8804
++        help
++         Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
++
++config SND_BCM2708_SOC_HIFIBERRY_AMP
++        tristate "Support for the HifiBerry Amp"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_TAS5713
++        select SND_RPI_SIMPLE_SOUNDCARD
++        help
++         Say Y or M if you want to add support for the HifiBerry Amp amplifier board.
++
++ config SND_BCM2708_SOC_PIFI_40
++         tristate "Support for the PiFi-40 amp"
++         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++         select SND_SOC_TAS571X
++         select SND_PIFI_40
++         help
++          Say Y or M if you want to add support for the PiFi40 amp board
++
++config SND_BCM2708_SOC_RPI_CIRRUS
++        tristate "Support for Cirrus Logic Audio Card"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_WM5102
++        select SND_SOC_WM8804
++        help
++         Say Y or M if you want to add support for the Wolfson and
++         Cirrus Logic audio cards.
++
++config SND_BCM2708_SOC_RPI_DAC
++        tristate "Support for RPi-DAC"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_PCM1794A
++        select SND_RPI_SIMPLE_SOUNDCARD
++        help
++         Say Y or M if you want to add support for RPi-DAC.
++
++config SND_BCM2708_SOC_RPI_PROTO
++	tristate "Support for Rpi-PROTO"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_WM8731
++	help
++	  Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731).
++
++config SND_BCM2708_SOC_JUSTBOOM_BOTH
++	tristate "Support for simultaneous JustBoom Digi and JustBoom DAC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_WM8804
++	select SND_SOC_PCM512x
++	help
++		Say Y or M if you want to add support for simultaneous
++		JustBoom Digi and JustBoom DAC.
++
++		This is not the right choice if you only have one but both of
++		these cards.
++
++config SND_BCM2708_SOC_JUSTBOOM_DAC
++	tristate "Support for JustBoom DAC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_PCM512x
++	help
++	  Say Y or M if you want to add support for JustBoom DAC.
++
++config SND_BCM2708_SOC_JUSTBOOM_DIGI
++	tristate "Support for JustBoom Digi"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_WM8804
++        select SND_RPI_WM8804_SOUNDCARD
++	help
++	  Say Y or M if you want to add support for JustBoom Digi.
++
++config SND_BCM2708_SOC_IQAUDIO_CODEC
++	tristate "Support for IQaudIO-CODEC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_DA7213
++	help
++	  Say Y or M if you want to add support for IQaudIO-CODEC.
++
++config SND_BCM2708_SOC_IQAUDIO_DAC
++	tristate "Support for IQaudIO-DAC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_PCM512x_I2C
++	help
++	  Say Y or M if you want to add support for IQaudIO-DAC.
++
++config SND_BCM2708_SOC_IQAUDIO_DIGI
++	tristate "Support for IQAudIO Digi"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_WM8804
++	select SND_RPI_WM8804_SOUNDCARD
++	help
++	  Say Y or M if you want to add support for IQAudIO Digital IO board.
++
++config SND_BCM2708_SOC_I_SABRE_Q2M
++        tristate "Support for Audiophonics I-Sabre Q2M DAC"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_I_SABRE_CODEC
++        help
++        Say Y or M if you want to add support for Audiophonics I-SABRE Q2M DAC
++
++config SND_BCM2708_SOC_ADAU1977_ADC
++	tristate "Support for ADAU1977 ADC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_ADAU1977_I2C
++	select SND_RPI_SIMPLE_SOUNDCARD
++	help
++	  Say Y or M if you want to add support for ADAU1977 ADC.
++
++config SND_AUDIOINJECTOR_PI_SOUNDCARD
++	tristate "Support for audioinjector.net Pi add on soundcard"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_WM8731
++	help
++	  Say Y or M if you want to add support for audioinjector.net Pi Hat
++
++config SND_AUDIOINJECTOR_OCTO_SOUNDCARD
++	tristate "Support for audioinjector.net Octo channel (Hat) soundcard"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_CS42XX8_I2C
++	help
++	  Say Y or M if you want to add support for audioinjector.net octo add on
++
++config SND_AUDIOINJECTOR_ISOLATED_SOUNDCARD
++	tristate "Support for audioinjector.net isolated DAC and ADC soundcard"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_CS4271_I2C
++	help
++	  Say Y or M if you want to add support for audioinjector.net isolated soundcard
++
++config SND_AUDIOSENSE_PI
++	tristate "Support for AudioSense Add-On Soundcard"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_TLV320AIC32X4_I2C
++	help
++	  Say Y or M if you want to add support for tlv320aic32x4 add-on
++
++config SND_DIGIDAC1_SOUNDCARD
++        tristate "Support for Red Rocks Audio DigiDAC1"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_WM8804
++        select SND_SOC_WM8741
++        help
++         Say Y or M if you want to add support for Red Rocks Audio DigiDAC1 board.
++
++config SND_BCM2708_SOC_DIONAUDIO_LOCO
++	tristate "Support for Dion Audio LOCO DAC-AMP"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_PCM5102a
++	help
++	  Say Y or M if you want to add support for Dion Audio LOCO.
++
++config SND_BCM2708_SOC_DIONAUDIO_LOCO_V2
++	tristate "Support for Dion Audio LOCO-V2 DAC-AMP"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_PCM5122
++	help
++	  Say Y or M if you want to add support for Dion Audio LOCO-V2.
++
++config SND_BCM2708_SOC_ALLO_PIANO_DAC
++	tristate "Support for Allo Piano DAC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_PCM512x_I2C
++	help
++	  Say Y or M if you want to add support for Allo Piano DAC.
++
++config SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS
++	tristate "Support for Allo Piano DAC Plus"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_PCM512x_I2C
++	help
++	  Say Y or M if you want to add support for Allo Piano DAC Plus.
++
++config SND_BCM2708_SOC_ALLO_BOSS_DAC
++	tristate "Support for Allo Boss DAC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_PCM512x_I2C
++	help
++	  Say Y or M if you want to add support for Allo Boss DAC.
++
++config SND_BCM2708_SOC_ALLO_BOSS2_DAC
++	tristate "Support for Allo Boss2 DAC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	depends on I2C
++	select REGMAP_I2C
++	select SND_AUDIO_GRAPH_CARD
++	help
++	  Say Y or M if you want to add support for Allo Boss2 DAC.
++
++config SND_BCM2708_SOC_ALLO_DIGIONE
++	tristate "Support for Allo DigiOne"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_WM8804
++	select SND_RPI_WM8804_SOUNDCARD
++	help
++	  Say Y or M if you want to add support for Allo DigiOne.
++
++config SND_BCM2708_SOC_ALLO_KATANA_DAC
++	tristate "Support for Allo Katana DAC"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	depends on I2C
++	select REGMAP_I2C
++	select SND_AUDIO_GRAPH_CARD
++	help
++	  Say Y or M if you want to add support for Allo Katana DAC.
++
++config SND_BCM2708_SOC_FE_PI_AUDIO
++	tristate "Support for Fe-Pi-Audio"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_SOC_SGTL5000
++	help
++	  Say Y or M if you want to add support for Fe-Pi-Audio.
++
++config SND_PISOUND
++	tristate "Support for Blokas Labs pisound"
++	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_RAWMIDI
++	help
++	  Say Y or M if you want to add support for Blokas Labs pisound.
++
++config SND_RPI_SIMPLE_SOUNDCARD
++	tristate "Support for Raspberry Pi simple soundcards"
++	help
++	  Say Y or M if you want to add support Raspbery Pi simple soundcards
++
++config SND_RPI_WM8804_SOUNDCARD
++	tristate "Support for Raspberry Pi generic WM8804 soundcards"
++	help
++	  Say Y or M if you want to add support for the Raspberry Pi
++          generic driver for WM8804 based soundcards.
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -12,4 +12,70 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
+ # BCM63XX Platform Support
+ snd-soc-63xx-objs := bcm63xx-i2s-whistler.o bcm63xx-pcm-whistler.o
+ 
+-obj-$(CONFIG_SND_BCM63XX_I2S_WHISTLER) += snd-soc-63xx.o
+\ No newline at end of file
++obj-$(CONFIG_SND_BCM63XX_I2S_WHISTLER) += snd-soc-63xx.o
++
++# Google voiceHAT custom codec support
++snd-soc-googlevoicehat-codec-objs := googlevoicehat-codec.o
++
++# BCM2708 Machine Support
++snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
++snd-soc-hifiberry-dacplushd-objs := hifiberry_dacplushd.o
++snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
++snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
++snd-soc-hifiberry-dacplusdsp-objs := hifiberry_dacplusdsp.o
++snd-soc-justboom-both-objs := justboom-both.o
++snd-soc-justboom-dac-objs := justboom-dac.o
++snd-soc-rpi-cirrus-objs := rpi-cirrus.o
++snd-soc-rpi-proto-objs := rpi-proto.o
++snd-soc-iqaudio-codec-objs := iqaudio-codec.o
++snd-soc-iqaudio-dac-objs := iqaudio-dac.o
++ snd-soc-i-sabre-q2m-objs := i-sabre-q2m.o
++snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
++snd-soc-audioinjector-octo-soundcard-objs := audioinjector-octo-soundcard.o
++snd-soc-audioinjector-isolated-soundcard-objs := audioinjector-isolated-soundcard.o
++snd-soc-audiosense-pi-objs := audiosense-pi.o
++snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
++snd-soc-dionaudio-loco-objs := dionaudio_loco.o
++snd-soc-dionaudio-loco-v2-objs := dionaudio_loco-v2.o
++snd-soc-allo-boss-dac-objs := allo-boss-dac.o
++snd-soc-allo-boss2-dac-objs := allo-boss2-dac.o
++snd-soc-allo-piano-dac-objs := allo-piano-dac.o
++snd-soc-allo-piano-dac-plus-objs := allo-piano-dac-plus.o
++snd-soc-allo-katana-codec-objs := allo-katana-codec.o
++snd-soc-pisound-objs := pisound.o
++snd-soc-fe-pi-audio-objs := fe-pi-audio.o
++snd-soc-rpi-simple-soundcard-objs := rpi-simple-soundcard.o
++snd-soc-rpi-wm8804-soundcard-objs := rpi-wm8804-soundcard.o
++snd-soc-pifi-40-objs := pifi-40.o
++
++obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD)  += snd-soc-googlevoicehat-codec.o
++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSHD) += snd-soc-hifiberry-dacplushd.o
++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP) += snd-soc-hifiberry-dacplusdsp.o
++obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_BOTH) += snd-soc-justboom-both.o
++obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
++obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
++obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC) += snd-soc-iqaudio-codec.o
++obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M) += snd-soc-i-sabre-q2m.o
++obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
++obj-$(CONFIG_SND_AUDIOINJECTOR_OCTO_SOUNDCARD) += snd-soc-audioinjector-octo-soundcard.o
++obj-$(CONFIG_SND_AUDIOINJECTOR_ISOLATED_SOUNDCARD) += snd-soc-audioinjector-isolated-soundcard.o
++obj-$(CONFIG_SND_AUDIOSENSE_PI) += snd-soc-audiosense-pi.o
++obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
++obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
++obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2) += snd-soc-dionaudio-loco-v2.o
++obj-$(CONFIG_SND_BCM2708_SOC_ALLO_BOSS_DAC) += snd-soc-allo-boss-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_ALLO_BOSS2_DAC) += snd-soc-allo-boss2-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC) += snd-soc-allo-piano-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS) += snd-soc-allo-piano-dac-plus.o
++obj-$(CONFIG_SND_BCM2708_SOC_ALLO_KATANA_DAC) += snd-soc-allo-katana-codec.o
++obj-$(CONFIG_SND_PISOUND) += snd-soc-pisound.o
++obj-$(CONFIG_SND_BCM2708_SOC_FE_PI_AUDIO) += snd-soc-fe-pi-audio.o
++obj-$(CONFIG_SND_RPI_SIMPLE_SOUNDCARD) += snd-soc-rpi-simple-soundcard.o
++obj-$(CONFIG_SND_RPI_WM8804_SOUNDCARD) += snd-soc-rpi-wm8804-soundcard.o
++obj-$(CONFIG_SND_BCM2708_SOC_PIFI_40) += snd-soc-pifi-40.o
++
+--- /dev/null
++++ b/sound/soc/bcm/allo-boss-dac.c
+@@ -0,0 +1,456 @@
++/*
++ * ALSA ASoC Machine Driver for Allo Boss DAC
++ *
++ * Author:	Baswaraj K <jaikumar@cem-solutions.net>
++ *		Copyright 2017
++ *		based on code by Daniel Matuschek,
++ *				 Stuart MacLean <stuart@hifiberry.com>
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/gpio/consumer.h>
++#include <linux/platform_device.h>
++#include <linux/clk.h>
++#include <linux/delay.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include "../codecs/pcm512x.h"
++
++#define ALLO_BOSS_NOCLOCK 0
++#define ALLO_BOSS_CLK44EN 1
++#define ALLO_BOSS_CLK48EN 2
++
++struct pcm512x_priv {
++	struct regmap *regmap;
++	struct clk *sclk;
++};
++
++static struct gpio_desc *mute_gpio;
++
++/* Clock rate of CLK44EN attached to GPIO6 pin */
++#define CLK_44EN_RATE 45158400UL
++/* Clock rate of CLK48EN attached to GPIO3 pin */
++#define CLK_48EN_RATE 49152000UL
++
++static bool slave;
++static bool snd_soc_allo_boss_master;
++static bool digital_gain_0db_limit = true;
++
++static void snd_allo_boss_select_clk(struct snd_soc_component *component,
++	int clk_id)
++{
++	switch (clk_id) {
++	case ALLO_BOSS_NOCLOCK:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
++		break;
++	case ALLO_BOSS_CLK44EN:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
++		break;
++	case ALLO_BOSS_CLK48EN:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
++		break;
++	}
++}
++
++static void snd_allo_boss_clk_gpio(struct snd_soc_component *component)
++{
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
++}
++
++static bool snd_allo_boss_is_sclk(struct snd_soc_component *component)
++{
++	unsigned int sck;
++
++	sck = snd_soc_component_read(component, PCM512x_RATE_DET_4);
++	return (!(sck & 0x40));
++}
++
++static bool snd_allo_boss_is_sclk_sleep(
++	struct snd_soc_component *component)
++{
++	msleep(2);
++	return snd_allo_boss_is_sclk(component);
++}
++
++static bool snd_allo_boss_is_master_card(struct snd_soc_component *component)
++{
++	bool isClk44EN, isClk48En, isNoClk;
++
++	snd_allo_boss_clk_gpio(component);
++
++	snd_allo_boss_select_clk(component, ALLO_BOSS_CLK44EN);
++	isClk44EN = snd_allo_boss_is_sclk_sleep(component);
++
++	snd_allo_boss_select_clk(component, ALLO_BOSS_NOCLOCK);
++	isNoClk = snd_allo_boss_is_sclk_sleep(component);
++
++	snd_allo_boss_select_clk(component, ALLO_BOSS_CLK48EN);
++	isClk48En = snd_allo_boss_is_sclk_sleep(component);
++
++	return (isClk44EN && isClk48En && !isNoClk);
++}
++
++static int snd_allo_boss_clk_for_rate(int sample_rate)
++{
++	int type;
++
++	switch (sample_rate) {
++	case 11025:
++	case 22050:
++	case 44100:
++	case 88200:
++	case 176400:
++	case 352800:
++		type = ALLO_BOSS_CLK44EN;
++		break;
++	default:
++		type = ALLO_BOSS_CLK48EN;
++		break;
++	}
++	return type;
++}
++
++static void snd_allo_boss_set_sclk(struct snd_soc_component *component,
++	int sample_rate)
++{
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++
++	if (!IS_ERR(pcm512x->sclk)) {
++		int ctype;
++
++		ctype =	snd_allo_boss_clk_for_rate(sample_rate);
++		clk_set_rate(pcm512x->sclk, (ctype == ALLO_BOSS_CLK44EN)
++				? CLK_44EN_RATE : CLK_48EN_RATE);
++		snd_allo_boss_select_clk(component, ctype);
++	}
++}
++
++static int snd_allo_boss_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct pcm512x_priv *priv = snd_soc_component_get_drvdata(component);
++
++	if (slave)
++		snd_soc_allo_boss_master = false;
++	else
++		snd_soc_allo_boss_master =
++			snd_allo_boss_is_master_card(component);
++
++	if (snd_soc_allo_boss_master) {
++		struct snd_soc_dai_link *dai = rtd->dai_link;
++
++		dai->name = "BossDAC";
++		dai->stream_name = "Boss DAC HiFi [Master]";
++		dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++			| SND_SOC_DAIFMT_CBM_CFM;
++
++		snd_soc_component_update_bits(component, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
++		snd_soc_component_update_bits(component, PCM512x_MASTER_MODE, 0x03, 0x03);
++		snd_soc_component_update_bits(component, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
++		/*
++		* Default sclk to CLK_48EN_RATE, otherwise codec
++		*  pcm512x_dai_startup_master method could call
++		*  snd_pcm_hw_constraint_ratnums using CLK_44EN/64
++		*  which will mask 384k sample rate.
++		*/
++		if (!IS_ERR(priv->sclk))
++			clk_set_rate(priv->sclk, CLK_48EN_RATE);
++	} else {
++		priv->sclk = ERR_PTR(-ENOENT);
++	}
++
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++
++	if (digital_gain_0db_limit) {
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume",
++				207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n",
++					ret);
++	}
++
++	return 0;
++}
++
++static int snd_allo_boss_update_rate_den(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++	struct snd_ratnum *rats_no_pll;
++	unsigned int num = 0, den = 0;
++	int err;
++
++	rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
++	if (!rats_no_pll)
++		return -ENOMEM;
++
++	rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
++	rats_no_pll->den_min = 1;
++	rats_no_pll->den_max = 128;
++	rats_no_pll->den_step = 1;
++
++	err = snd_interval_ratnum(hw_param_interval(params,
++		SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
++	if (err >= 0 && den) {
++		params->rate_num = num;
++		params->rate_den = den;
++	}
++
++	devm_kfree(rtd->dev, rats_no_pll);
++	return 0;
++}
++
++static void snd_allo_boss_gpio_mute(struct snd_soc_card *card)
++{
++	if (mute_gpio)
++		gpiod_set_value_cansleep(mute_gpio, 1);
++}
++
++static void snd_allo_boss_gpio_unmute(struct snd_soc_card *card)
++{
++	if (mute_gpio)
++		gpiod_set_value_cansleep(mute_gpio, 0);
++}
++
++static int snd_allo_boss_set_bias_level(struct snd_soc_card *card,
++	struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level)
++{
++	struct snd_soc_pcm_runtime *rtd;
++	struct snd_soc_dai *codec_dai;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	if (dapm->dev != codec_dai->dev)
++		return 0;
++
++	switch (level) {
++	case SND_SOC_BIAS_PREPARE:
++		if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
++			break;
++		/* UNMUTE DAC */
++		snd_allo_boss_gpio_unmute(card);
++		break;
++
++	case SND_SOC_BIAS_STANDBY:
++		if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
++			break;
++		/* MUTE DAC */
++		snd_allo_boss_gpio_mute(card);
++		break;
++
++	default:
++		break;
++	}
++
++	return 0;
++}
++
++static int snd_allo_boss_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	int ret = 0;
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	int channels = params_channels(params);
++	int width = snd_pcm_format_physical_width(params_format(params));
++
++	if (snd_soc_allo_boss_master) {
++		struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++		snd_allo_boss_set_sclk(component,
++			params_rate(params));
++
++		ret = snd_allo_boss_update_rate_den(
++			substream, params);
++		if (ret)
++			return ret;
++	}
++
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), channels * width);
++	if (ret)
++		return ret;
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), channels * width);
++	return ret;
++}
++
++static int snd_allo_boss_startup(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_card *card = rtd->card;
++
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++	snd_allo_boss_gpio_mute(card);
++
++	if (snd_soc_allo_boss_master) {
++		struct pcm512x_priv *priv = snd_soc_component_get_drvdata(component);
++		/*
++		 * Default sclk to CLK_48EN_RATE, otherwise codec
++		 * pcm512x_dai_startup_master method could call
++		 * snd_pcm_hw_constraint_ratnums using CLK_44EN/64
++		 * which will mask 384k sample rate.
++		 */
++		if (!IS_ERR(priv->sclk))
++			clk_set_rate(priv->sclk, CLK_48EN_RATE);
++	}
++
++	return 0;
++}
++
++static void snd_allo_boss_shutdown(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++}
++
++static int snd_allo_boss_prepare(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_card *card = rtd->card;
++
++	snd_allo_boss_gpio_unmute(card);
++	return 0;
++}
++/* machine stream operations */
++static struct snd_soc_ops snd_allo_boss_ops = {
++	.hw_params = snd_allo_boss_hw_params,
++	.startup = snd_allo_boss_startup,
++	.shutdown = snd_allo_boss_shutdown,
++	.prepare = snd_allo_boss_prepare,
++};
++
++SND_SOC_DAILINK_DEFS(allo_boss,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_allo_boss_dai[] = {
++{
++	.name		= "Boss DAC",
++	.stream_name	= "Boss DAC HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S |
++			  SND_SOC_DAIFMT_NB_NF |
++			  SND_SOC_DAIFMT_CBS_CFS,
++	.ops		= &snd_allo_boss_ops,
++	.init		= snd_allo_boss_init,
++	SND_SOC_DAILINK_REG(allo_boss),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_allo_boss = {
++	.name         = "BossDAC",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_allo_boss_dai,
++	.num_links    = ARRAY_SIZE(snd_allo_boss_dai),
++};
++
++static int snd_allo_boss_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_allo_boss.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_allo_boss_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					    "i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++
++		digital_gain_0db_limit = !of_property_read_bool(
++			pdev->dev.of_node, "allo,24db_digital_gain");
++		slave = of_property_read_bool(pdev->dev.of_node,
++						"allo,slave");
++
++		mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute",
++							GPIOD_OUT_LOW);
++		if (IS_ERR(mute_gpio)) {
++			ret = PTR_ERR(mute_gpio);
++			dev_err(&pdev->dev,
++				"failed to get mute gpio: %d\n", ret);
++			return ret;
++		}
++
++		if (mute_gpio)
++			snd_allo_boss.set_bias_level =
++				snd_allo_boss_set_bias_level;
++
++		ret = snd_soc_register_card(&snd_allo_boss);
++		if (ret) {
++			dev_err(&pdev->dev,
++				"snd_soc_register_card() failed: %d\n", ret);
++			return ret;
++		}
++
++		if (mute_gpio)
++			snd_allo_boss_gpio_mute(&snd_allo_boss);
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++static int snd_allo_boss_remove(struct platform_device *pdev)
++{
++	snd_allo_boss_gpio_mute(&snd_allo_boss);
++	return snd_soc_unregister_card(&snd_allo_boss);
++}
++
++static const struct of_device_id snd_allo_boss_of_match[] = {
++	{ .compatible = "allo,boss-dac", },
++	{ /* sentinel */ },
++};
++MODULE_DEVICE_TABLE(of, snd_allo_boss_of_match);
++
++static struct platform_driver snd_allo_boss_driver = {
++	.driver = {
++		.name   = "snd-allo-boss-dac",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_allo_boss_of_match,
++	},
++	.probe          = snd_allo_boss_probe,
++	.remove         = snd_allo_boss_remove,
++};
++
++module_platform_driver(snd_allo_boss_driver);
++
++MODULE_AUTHOR("Baswaraj K <jaikumar@cem-solutions.net>");
++MODULE_DESCRIPTION("ALSA ASoC Machine Driver for Allo Boss DAC");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/allo-boss2-dac.c
+@@ -0,0 +1,1133 @@
++/*
++ * Driver for the ALLO KATANA CODEC
++ *
++ * Author: Jaikumar <sudeepkumar@cem-solutions.net>
++ *		Copyright 2018
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/gpio/consumer.h>
++#include <linux/platform_device.h>
++#include <linux/pm.h>
++#include <linux/i2c.h>
++#include <linux/of_device.h>
++#include <linux/regmap.h>
++#include <linux/slab.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/soc-dapm.h>
++#include <sound/initval.h>
++#include <sound/tlv.h>
++#include <linux/of_gpio.h>
++#include <linux/regulator/consumer.h>
++#include <linux/pm_runtime.h>
++#include <linux/of_irq.h>
++#include <linux/completion.h>
++#include <linux/mutex.h>
++#include <linux/workqueue.h>
++#include <sound/jack.h>
++
++#include "../codecs/cs43130.h"
++
++#include <linux/clk.h>
++#include <linux/gcd.h>
++#define DEBUG
++
++#define CS43130_DSD_EN_MASK             0x10
++#define CS43130_PDN_DONE_INT_MASK        0x00
++
++static struct gpio_desc *snd_allo_clk44gpio;
++static struct gpio_desc *snd_allo_clk48gpio;
++
++struct  cs43130_priv {
++	struct snd_soc_component        *component;
++	struct regmap                   *regmap;
++	struct regulator_bulk_data      supplies[CS43130_NUM_SUPPLIES];
++	struct gpio_desc                *reset_gpio;
++	unsigned int                    dev_id; /* codec device ID */
++	int                             xtal_ibias;
++	/* shared by both DAIs */
++	struct mutex                    clk_mutex;
++	int                             clk_req;
++	bool                            pll_bypass;
++	struct completion               xtal_rdy;
++	struct completion               pll_rdy;
++	unsigned int                    mclk;
++	unsigned int                    mclk_int;
++	int                             mclk_int_src;
++
++	/* DAI specific */
++	struct cs43130_dai              dais[CS43130_DAI_ID_MAX];
++
++	/* HP load specific */
++	bool                            dc_meas;
++	bool                            ac_meas;
++	bool                            hpload_done;
++	struct completion               hpload_evt;
++	unsigned int                    hpload_stat;
++	u16                             hpload_dc[2];
++	u16                             dc_threshold[CS43130_DC_THRESHOLD];
++	u16                             ac_freq[CS43130_AC_FREQ];
++	u16                             hpload_ac[CS43130_AC_FREQ][2];
++	struct workqueue_struct         *wq;
++	struct work_struct              work;
++	struct snd_soc_jack             jack;
++};
++
++static const struct reg_default cs43130_reg_defaults[] = {
++	{CS43130_SYS_CLK_CTL_1, 0x06},
++	{CS43130_SP_SRATE, 0x01},
++	{CS43130_SP_BITSIZE, 0x05},
++	{CS43130_PAD_INT_CFG, 0x03},
++	{CS43130_PWDN_CTL, 0xFE},
++	{CS43130_CRYSTAL_SET, 0x04},
++	{CS43130_PLL_SET_1, 0x00},
++	{CS43130_PLL_SET_2, 0x00},
++	{CS43130_PLL_SET_3, 0x00},
++	{CS43130_PLL_SET_4, 0x00},
++	{CS43130_PLL_SET_5, 0x40},
++	{CS43130_PLL_SET_6, 0x10},
++	{CS43130_PLL_SET_7, 0x80},
++	{CS43130_PLL_SET_8, 0x03},
++	{CS43130_PLL_SET_9, 0x02},
++	{CS43130_PLL_SET_10, 0x02},
++	{CS43130_CLKOUT_CTL, 0x00},
++	{CS43130_ASP_NUM_1, 0x01},
++	{CS43130_ASP_NUM_2, 0x00},
++	{CS43130_ASP_DEN_1, 0x08},
++	{CS43130_ASP_DEN_2, 0x00},
++	{CS43130_ASP_LRCK_HI_TIME_1, 0x1F},
++	{CS43130_ASP_LRCK_HI_TIME_2, 0x00},
++	{CS43130_ASP_LRCK_PERIOD_1, 0x3F},
++	{CS43130_ASP_LRCK_PERIOD_2, 0x00},
++	{CS43130_ASP_CLOCK_CONF, 0x0C},
++	{CS43130_ASP_FRAME_CONF, 0x0A},
++	{CS43130_XSP_NUM_1, 0x01},
++	{CS43130_XSP_NUM_2, 0x00},
++	{CS43130_XSP_DEN_1, 0x02},
++	{CS43130_XSP_DEN_2, 0x00},
++	{CS43130_XSP_LRCK_HI_TIME_1, 0x1F},
++	{CS43130_XSP_LRCK_HI_TIME_2, 0x00},
++	{CS43130_XSP_LRCK_PERIOD_1, 0x3F},
++	{CS43130_XSP_LRCK_PERIOD_2, 0x00},
++	{CS43130_XSP_CLOCK_CONF, 0x0C},
++	{CS43130_XSP_FRAME_CONF, 0x0A},
++	{CS43130_ASP_CH_1_LOC, 0x00},
++	{CS43130_ASP_CH_2_LOC, 0x00},
++	{CS43130_ASP_CH_1_SZ_EN, 0x06},
++	{CS43130_ASP_CH_2_SZ_EN, 0x0E},
++	{CS43130_XSP_CH_1_LOC, 0x00},
++	{CS43130_XSP_CH_2_LOC, 0x00},
++	{CS43130_XSP_CH_1_SZ_EN, 0x06},
++	{CS43130_XSP_CH_2_SZ_EN, 0x0E},
++	{CS43130_DSD_VOL_B, 0x78},
++	{CS43130_DSD_VOL_A, 0x78},
++	{CS43130_DSD_PATH_CTL_1, 0xA8},
++	{CS43130_DSD_INT_CFG, 0x00},
++	{CS43130_DSD_PATH_CTL_2, 0x02},
++	{CS43130_DSD_PCM_MIX_CTL, 0x00},
++	{CS43130_DSD_PATH_CTL_3, 0x40},
++	{CS43130_HP_OUT_CTL_1, 0x30},
++	{CS43130_PCM_FILT_OPT, 0x02},
++	{CS43130_PCM_VOL_B, 0x78},
++	{CS43130_PCM_VOL_A, 0x78},
++	{CS43130_PCM_PATH_CTL_1, 0xA8},
++	{CS43130_PCM_PATH_CTL_2, 0x00},
++	{CS43130_CLASS_H_CTL, 0x1E},
++	{CS43130_HP_DETECT, 0x04},
++	{CS43130_HP_LOAD_1, 0x00},
++	{CS43130_HP_MEAS_LOAD_1, 0x00},
++	{CS43130_HP_MEAS_LOAD_2, 0x00},
++	{CS43130_INT_MASK_1, 0xFF},
++	{CS43130_INT_MASK_2, 0xFF},
++	{CS43130_INT_MASK_3, 0xFF},
++	{CS43130_INT_MASK_4, 0xFF},
++	{CS43130_INT_MASK_5, 0xFF},
++};
++static bool cs43130_volatile_register(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++	case CS43130_INT_STATUS_1 ... CS43130_INT_STATUS_5:
++	case CS43130_HP_DC_STAT_1 ... CS43130_HP_DC_STAT_2:
++	case CS43130_HP_AC_STAT_1 ... CS43130_HP_AC_STAT_2:
++		return true;
++	default:
++		return false;
++	}
++}
++
++static const char * const pcm_spd_texts[] = {
++	"Fast",
++	"Slow",
++};
++
++static SOC_ENUM_SINGLE_DECL(pcm_spd_enum, CS43130_PCM_FILT_OPT, 7,
++			pcm_spd_texts);
++
++static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(master_tlv, -12750, 0);
++
++static const struct snd_kcontrol_new cs43130_controls[] = {
++	SOC_DOUBLE_R_TLV("Master Playback Volume", CS43130_PCM_VOL_B,
++			CS43130_PCM_VOL_A, 0, 255, 1, master_tlv),
++	SOC_DOUBLE("Master Playback Switch", CS43130_PCM_PATH_CTL_1,
++			0, 1, 1, 1),
++	SOC_DOUBLE_R_TLV("Digital Playback Volume", CS43130_DSD_VOL_B,
++			CS43130_DSD_VOL_A, 0, 255, 1, master_tlv),
++	SOC_DOUBLE("Digital Playback Switch", CS43130_DSD_PATH_CTL_1,
++			0, 1, 1, 1),
++	SOC_SINGLE("HV_Enable", CS43130_HP_OUT_CTL_1, 0, 1, 0),
++	SOC_ENUM("PCM Filter Speed", pcm_spd_enum),
++	SOC_SINGLE("PCM Phase Compensation", CS43130_PCM_FILT_OPT, 6, 1, 0),
++	SOC_SINGLE("PCM Nonoversample Emulate", CS43130_PCM_FILT_OPT, 5, 1, 0),
++	SOC_SINGLE("PCM High-pass Filter", CS43130_PCM_FILT_OPT, 1, 1, 0),
++	SOC_SINGLE("PCM De-emphasis Filter", CS43130_PCM_FILT_OPT, 0, 1, 0),
++};
++
++static bool cs43130_readable_register(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++	case CS43130_DEVID_AB ... CS43130_SYS_CLK_CTL_1:
++	case CS43130_SP_SRATE ... CS43130_PAD_INT_CFG:
++	case CS43130_PWDN_CTL:
++	case CS43130_CRYSTAL_SET:
++	case CS43130_PLL_SET_1 ... CS43130_PLL_SET_5:
++	case CS43130_PLL_SET_6:
++	case CS43130_PLL_SET_7:
++	case CS43130_PLL_SET_8:
++	case CS43130_PLL_SET_9:
++	case CS43130_PLL_SET_10:
++	case CS43130_CLKOUT_CTL:
++	case CS43130_ASP_NUM_1 ... CS43130_ASP_FRAME_CONF:
++	case CS43130_XSP_NUM_1 ... CS43130_XSP_FRAME_CONF:
++	case CS43130_ASP_CH_1_LOC:
++	case CS43130_ASP_CH_2_LOC:
++	case CS43130_ASP_CH_1_SZ_EN:
++	case CS43130_ASP_CH_2_SZ_EN:
++	case CS43130_XSP_CH_1_LOC:
++	case CS43130_XSP_CH_2_LOC:
++	case CS43130_XSP_CH_1_SZ_EN:
++	case CS43130_XSP_CH_2_SZ_EN:
++	case CS43130_DSD_VOL_B ... CS43130_DSD_PATH_CTL_3:
++	case CS43130_HP_OUT_CTL_1:
++	case CS43130_PCM_FILT_OPT ... CS43130_PCM_PATH_CTL_2:
++	case CS43130_CLASS_H_CTL:
++	case CS43130_HP_DETECT:
++	case CS43130_HP_STATUS:
++	case CS43130_HP_LOAD_1:
++	case CS43130_HP_MEAS_LOAD_1:
++	case CS43130_HP_MEAS_LOAD_2:
++	case CS43130_HP_DC_STAT_1:
++	case CS43130_HP_DC_STAT_2:
++	case CS43130_HP_AC_STAT_1:
++	case CS43130_HP_AC_STAT_2:
++	case CS43130_HP_LOAD_STAT:
++	case CS43130_INT_STATUS_1 ... CS43130_INT_STATUS_5:
++	case CS43130_INT_MASK_1 ... CS43130_INT_MASK_5:
++		return true;
++	default:
++		return false;
++	}
++}
++static bool cs43130_precious_register(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++	case CS43130_INT_STATUS_1 ... CS43130_INT_STATUS_5:
++		return true;
++	default:
++		return false;
++	}
++}
++static int cs43130_pcm_pdn(struct snd_soc_component *component)
++{
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++	int ret;
++	unsigned int reg, pdn_int;
++
++	regmap_write(cs43130->regmap, CS43130_DSD_PATH_CTL_2, 0x02);
++	regmap_update_bits(cs43130->regmap, CS43130_INT_MASK_1,
++			CS43130_PDN_DONE_INT_MASK, 0);
++	regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++			CS43130_PDN_HP_MASK, 1 << CS43130_PDN_HP_SHIFT);
++	usleep_range(10, 50);
++	ret = regmap_read(cs43130->regmap, CS43130_INT_STATUS_1, &reg);
++	pdn_int = reg & 0xFE;
++	regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++			CS43130_PDN_ASP_MASK, 1 << CS43130_PDN_ASP_SHIFT);
++	return 0;
++
++}
++static int cs43130_pwr_up_asp_dac(struct snd_soc_component *component)
++{
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++
++	regmap_update_bits(cs43130->regmap, CS43130_PAD_INT_CFG,
++			CS43130_ASP_3ST_MASK, 0);
++	regmap_write(cs43130->regmap, CS43130_DXD1, 0x99);
++	regmap_write(cs43130->regmap, CS43130_DXD13, 0x20);
++	regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++			CS43130_PDN_ASP_MASK, 0);
++	regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++			CS43130_PDN_HP_MASK, 0);
++	usleep_range(10000, 12000);
++	regmap_write(cs43130->regmap, CS43130_DXD1, 0x00);
++	regmap_write(cs43130->regmap, CS43130_DXD13, 0x00);
++	return 0;
++}
++static int cs43130_change_clksrc(struct snd_soc_component *component,
++				enum cs43130_mclk_src_sel src)
++{
++	int ret;
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++	int mclk_int_decoded;
++
++	if (src == cs43130->mclk_int_src) {
++		/* clk source has not changed */
++		return 0;
++	}
++	switch (cs43130->mclk_int) {
++	case CS43130_MCLK_22M:
++		mclk_int_decoded = CS43130_MCLK_22P5;
++		break;
++	case CS43130_MCLK_24M:
++		mclk_int_decoded = CS43130_MCLK_24P5;
++		break;
++	default:
++		dev_err(component->dev, "Invalid MCLK INT freq: %u\n",
++			cs43130->mclk_int);
++		return -EINVAL;
++	}
++
++	switch (src) {
++	case CS43130_MCLK_SRC_EXT:
++		cs43130->pll_bypass = true;
++		cs43130->mclk_int_src = CS43130_MCLK_SRC_EXT;
++		if (cs43130->xtal_ibias == CS43130_XTAL_UNUSED) {
++			regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++					CS43130_PDN_XTAL_MASK,
++					1 << CS43130_PDN_XTAL_SHIFT);
++		} else {
++			reinit_completion(&cs43130->xtal_rdy);
++			regmap_update_bits(cs43130->regmap, CS43130_INT_MASK_1,
++					CS43130_XTAL_RDY_INT_MASK, 0);
++			regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++					CS43130_PDN_XTAL_MASK, 0);
++			ret = wait_for_completion_timeout(&cs43130->xtal_rdy,
++					msecs_to_jiffies(100));
++			regmap_update_bits(cs43130->regmap, CS43130_INT_MASK_1,
++					CS43130_XTAL_RDY_INT_MASK,
++					1 << CS43130_XTAL_RDY_INT_SHIFT);
++			if (ret == 0) {
++				dev_err(component->dev, "Timeout waiting for XTAL_READY interrupt\n");
++				return -ETIMEDOUT;
++			}
++		}
++	regmap_update_bits(cs43130->regmap, CS43130_SYS_CLK_CTL_1,
++				CS43130_MCLK_SRC_SEL_MASK,
++				src << CS43130_MCLK_SRC_SEL_SHIFT);
++	regmap_update_bits(cs43130->regmap, CS43130_SYS_CLK_CTL_1,
++				CS43130_MCLK_INT_MASK,
++				mclk_int_decoded << CS43130_MCLK_INT_SHIFT);
++	usleep_range(150, 200);
++	regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++				CS43130_PDN_PLL_MASK,
++				1 << CS43130_PDN_PLL_SHIFT);
++	break;
++	case CS43130_MCLK_SRC_RCO:
++		cs43130->mclk_int_src = CS43130_MCLK_SRC_RCO;
++
++		regmap_update_bits(cs43130->regmap, CS43130_SYS_CLK_CTL_1,
++				CS43130_MCLK_SRC_SEL_MASK,
++				src << CS43130_MCLK_SRC_SEL_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_SYS_CLK_CTL_1,
++				CS43130_MCLK_INT_MASK,
++				CS43130_MCLK_22P5 << CS43130_MCLK_INT_SHIFT);
++		usleep_range(150, 200);
++		regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++				CS43130_PDN_XTAL_MASK,
++				1 << CS43130_PDN_XTAL_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++				CS43130_PDN_PLL_MASK,
++				1 << CS43130_PDN_PLL_SHIFT);
++	break;
++	default:
++		dev_err(component->dev, "Invalid MCLK source value\n");
++		return -EINVAL;
++	}
++
++	return 0;
++}
++static const struct cs43130_bitwidth_map cs43130_bitwidth_table[] = {
++	{8,     CS43130_SP_BIT_SIZE_8,  CS43130_CH_BIT_SIZE_8},
++	{16,    CS43130_SP_BIT_SIZE_16, CS43130_CH_BIT_SIZE_16},
++	{24,    CS43130_SP_BIT_SIZE_24, CS43130_CH_BIT_SIZE_24},
++	{32,    CS43130_SP_BIT_SIZE_32, CS43130_CH_BIT_SIZE_32},
++};
++
++static const struct cs43130_bitwidth_map *cs43130_get_bitwidth_table(
++					unsigned int bitwidth)
++{
++	int i;
++
++	for (i = 0; i < ARRAY_SIZE(cs43130_bitwidth_table); i++) {
++		if (cs43130_bitwidth_table[i].bitwidth == bitwidth)
++			return &cs43130_bitwidth_table[i];
++	}
++
++	return NULL;
++}
++static int cs43130_set_bitwidth(int dai_id, unsigned int bitwidth_dai,
++				struct regmap *regmap)
++{
++	const struct cs43130_bitwidth_map *bw_map;
++
++	bw_map = cs43130_get_bitwidth_table(bitwidth_dai);
++	if (!bw_map)
++		return -EINVAL;
++
++	switch (dai_id) {
++	case CS43130_ASP_PCM_DAI:
++	case CS43130_ASP_DOP_DAI:
++		regmap_update_bits(regmap, CS43130_ASP_CH_1_SZ_EN,
++				CS43130_CH_BITSIZE_MASK, bw_map->ch_bit);
++		regmap_update_bits(regmap, CS43130_ASP_CH_2_SZ_EN,
++				CS43130_CH_BITSIZE_MASK, bw_map->ch_bit);
++		regmap_update_bits(regmap, CS43130_SP_BITSIZE,
++				CS43130_ASP_BITSIZE_MASK, bw_map->sp_bit);
++		break;
++	case CS43130_XSP_DOP_DAI:
++		regmap_update_bits(regmap, CS43130_XSP_CH_1_SZ_EN,
++				CS43130_CH_BITSIZE_MASK, bw_map->ch_bit);
++		regmap_update_bits(regmap, CS43130_XSP_CH_2_SZ_EN,
++				CS43130_CH_BITSIZE_MASK, bw_map->ch_bit);
++		regmap_update_bits(regmap, CS43130_SP_BITSIZE,
++				CS43130_XSP_BITSIZE_MASK, bw_map->sp_bit <<
++				CS43130_XSP_BITSIZE_SHIFT);
++	break;
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++static const struct cs43130_rate_map cs43130_rate_table[] = {
++	{32000,         CS43130_ASP_SPRATE_32K},
++	{44100,         CS43130_ASP_SPRATE_44_1K},
++	{48000,         CS43130_ASP_SPRATE_48K},
++	{88200,         CS43130_ASP_SPRATE_88_2K},
++	{96000,         CS43130_ASP_SPRATE_96K},
++	{176400,        CS43130_ASP_SPRATE_176_4K},
++	{192000,        CS43130_ASP_SPRATE_192K},
++	{352800,        CS43130_ASP_SPRATE_352_8K},
++	{384000,        CS43130_ASP_SPRATE_384K},
++};
++
++static const struct cs43130_rate_map *cs43130_get_rate_table(int fs)
++{
++	int i;
++
++	for (i = 0; i < ARRAY_SIZE(cs43130_rate_table); i++) {
++		if (cs43130_rate_table[i].fs == fs)
++			return &cs43130_rate_table[i];
++	}
++
++	return NULL;
++}
++
++static const struct cs43130_clk_gen *cs43130_get_clk_gen(int mclk_int, int fs,
++	const struct cs43130_clk_gen *clk_gen_table, int len_clk_gen_table)
++{
++	int i;
++
++	for (i = 0; i < len_clk_gen_table; i++) {
++		if (clk_gen_table[i].mclk_int == mclk_int &&
++					clk_gen_table[i].fs == fs)
++			return &clk_gen_table[i];
++	}
++	return NULL;
++}
++
++static int cs43130_set_sp_fmt(int dai_id, unsigned int bitwidth_sclk,
++				struct snd_pcm_hw_params *params,
++				struct cs43130_priv *cs43130)
++{
++	u16 frm_size;
++	u16 hi_size;
++	u8 frm_delay;
++	u8 frm_phase;
++	u8 frm_data;
++	u8 sclk_edge;
++	u8 lrck_edge;
++	u8 clk_data;
++	u8 loc_ch1;
++	u8 loc_ch2;
++	u8 dai_mode_val;
++	const struct cs43130_clk_gen *clk_gen;
++
++	switch (cs43130->dais[dai_id].dai_format) {
++	case SND_SOC_DAIFMT_I2S:
++		hi_size = bitwidth_sclk;
++		frm_delay = 2;
++		frm_phase = 0;
++		break;
++	case SND_SOC_DAIFMT_LEFT_J:
++		hi_size = bitwidth_sclk;
++		frm_delay = 2;
++		frm_phase = 1;
++		break;
++	case SND_SOC_DAIFMT_DSP_A:
++		hi_size = 1;
++		frm_delay = 2;
++		frm_phase = 1;
++		break;
++	case SND_SOC_DAIFMT_DSP_B:
++		hi_size = 1;
++		frm_delay = 0;
++		frm_phase = 1;
++		break;
++	default:
++		return -EINVAL;
++	}
++	switch (cs43130->dais[dai_id].dai_mode) {
++	case SND_SOC_DAIFMT_CBS_CFS:
++		dai_mode_val = 0;
++		break;
++	case SND_SOC_DAIFMT_CBM_CFM:
++		dai_mode_val = 1;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	frm_size = bitwidth_sclk * params_channels(params);
++	sclk_edge = 1;
++	lrck_edge = 0;
++	loc_ch1 = 0;
++	loc_ch2 = bitwidth_sclk * (params_channels(params) - 1);
++
++	frm_data = frm_delay & CS43130_SP_FSD_MASK;
++	frm_data |= (frm_phase << CS43130_SP_STP_SHIFT) & CS43130_SP_STP_MASK;
++
++	clk_data = lrck_edge & CS43130_SP_LCPOL_IN_MASK;
++	clk_data |= (lrck_edge << CS43130_SP_LCPOL_OUT_SHIFT) &
++			CS43130_SP_LCPOL_OUT_MASK;
++	clk_data |= (sclk_edge << CS43130_SP_SCPOL_IN_SHIFT) &
++			CS43130_SP_SCPOL_IN_MASK;
++	clk_data |= (sclk_edge << CS43130_SP_SCPOL_OUT_SHIFT) &
++			CS43130_SP_SCPOL_OUT_MASK;
++	clk_data |= (dai_mode_val << CS43130_SP_MODE_SHIFT) &
++			CS43130_SP_MODE_MASK;
++	switch (dai_id) {
++	case CS43130_ASP_PCM_DAI:
++	case CS43130_ASP_DOP_DAI:
++		regmap_update_bits(cs43130->regmap, CS43130_ASP_LRCK_PERIOD_1,
++			CS43130_SP_LCPR_DATA_MASK, (frm_size - 1) >>
++			CS43130_SP_LCPR_LSB_DATA_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_ASP_LRCK_PERIOD_2,
++			CS43130_SP_LCPR_DATA_MASK, (frm_size - 1) >>
++			CS43130_SP_LCPR_MSB_DATA_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_ASP_LRCK_HI_TIME_1,
++			CS43130_SP_LCHI_DATA_MASK, (hi_size - 1) >>
++			CS43130_SP_LCHI_LSB_DATA_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_ASP_LRCK_HI_TIME_2,
++			CS43130_SP_LCHI_DATA_MASK, (hi_size - 1) >>
++			CS43130_SP_LCHI_MSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_ASP_FRAME_CONF, frm_data);
++		regmap_write(cs43130->regmap, CS43130_ASP_CH_1_LOC, loc_ch1);
++		regmap_write(cs43130->regmap, CS43130_ASP_CH_2_LOC, loc_ch2);
++		regmap_update_bits(cs43130->regmap, CS43130_ASP_CH_1_SZ_EN,
++			CS43130_CH_EN_MASK, 1 << CS43130_CH_EN_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_ASP_CH_2_SZ_EN,
++			CS43130_CH_EN_MASK, 1 << CS43130_CH_EN_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_ASP_CLOCK_CONF, clk_data);
++		break;
++	case CS43130_XSP_DOP_DAI:
++		regmap_update_bits(cs43130->regmap, CS43130_XSP_LRCK_PERIOD_1,
++			CS43130_SP_LCPR_DATA_MASK, (frm_size - 1) >>
++			CS43130_SP_LCPR_LSB_DATA_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_XSP_LRCK_PERIOD_2,
++			CS43130_SP_LCPR_DATA_MASK, (frm_size - 1) >>
++			CS43130_SP_LCPR_MSB_DATA_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_XSP_LRCK_HI_TIME_1,
++			CS43130_SP_LCHI_DATA_MASK, (hi_size - 1) >>
++			CS43130_SP_LCHI_LSB_DATA_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_XSP_LRCK_HI_TIME_2,
++			CS43130_SP_LCHI_DATA_MASK, (hi_size - 1) >>
++			CS43130_SP_LCHI_MSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_XSP_FRAME_CONF, frm_data);
++		regmap_write(cs43130->regmap, CS43130_XSP_CH_1_LOC, loc_ch1);
++		regmap_write(cs43130->regmap, CS43130_XSP_CH_2_LOC, loc_ch2);
++		regmap_update_bits(cs43130->regmap, CS43130_XSP_CH_1_SZ_EN,
++			CS43130_CH_EN_MASK, 1 << CS43130_CH_EN_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_XSP_CH_2_SZ_EN,
++			CS43130_CH_EN_MASK, 1 << CS43130_CH_EN_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_XSP_CLOCK_CONF, clk_data);
++		break;
++	default:
++		return -EINVAL;
++	}
++	switch (frm_size) {
++	case 16:
++		clk_gen = cs43130_get_clk_gen(cs43130->mclk_int,
++						params_rate(params),
++						cs43130_16_clk_gen,
++						ARRAY_SIZE(cs43130_16_clk_gen));
++		break;
++	case 32:
++		clk_gen = cs43130_get_clk_gen(cs43130->mclk_int,
++						params_rate(params),
++						cs43130_32_clk_gen,
++						ARRAY_SIZE(cs43130_32_clk_gen));
++		break;
++	case 48:
++		clk_gen = cs43130_get_clk_gen(cs43130->mclk_int,
++						params_rate(params),
++						cs43130_48_clk_gen,
++						ARRAY_SIZE(cs43130_48_clk_gen));
++		break;
++	case 64:
++		clk_gen = cs43130_get_clk_gen(cs43130->mclk_int,
++						params_rate(params),
++						cs43130_64_clk_gen,
++						ARRAY_SIZE(cs43130_64_clk_gen));
++		break;
++	default:
++		return -EINVAL;
++	}
++	if (!clk_gen)
++		return -EINVAL;
++	switch (dai_id) {
++	case CS43130_ASP_PCM_DAI:
++	case CS43130_ASP_DOP_DAI:
++		regmap_write(cs43130->regmap, CS43130_ASP_DEN_1,
++				(clk_gen->den & CS43130_SP_M_LSB_DATA_MASK) >>
++				CS43130_SP_M_LSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_ASP_DEN_2,
++				(clk_gen->den & CS43130_SP_M_MSB_DATA_MASK) >>
++				CS43130_SP_M_MSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_ASP_NUM_1,
++				(clk_gen->num & CS43130_SP_N_LSB_DATA_MASK) >>
++				CS43130_SP_N_LSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_ASP_NUM_2,
++				(clk_gen->num & CS43130_SP_N_MSB_DATA_MASK) >>
++				CS43130_SP_N_MSB_DATA_SHIFT);
++		break;
++	case CS43130_XSP_DOP_DAI:
++		regmap_write(cs43130->regmap, CS43130_XSP_DEN_1,
++				(clk_gen->den & CS43130_SP_M_LSB_DATA_MASK) >>
++				CS43130_SP_M_LSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_XSP_DEN_2,
++				(clk_gen->den & CS43130_SP_M_MSB_DATA_MASK) >>
++				CS43130_SP_M_MSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_XSP_NUM_1,
++				(clk_gen->num & CS43130_SP_N_LSB_DATA_MASK) >>
++				CS43130_SP_N_LSB_DATA_SHIFT);
++		regmap_write(cs43130->regmap, CS43130_XSP_NUM_2,
++				(clk_gen->num & CS43130_SP_N_MSB_DATA_MASK) >>
++				CS43130_SP_N_MSB_DATA_SHIFT);
++		break;
++	default:
++		return -EINVAL;
++	}
++	return 0;
++}
++
++static int cs43130_hw_params(struct snd_pcm_substream *substream,
++				struct snd_pcm_hw_params *params,
++				struct snd_soc_dai *dai)
++{
++	struct snd_soc_component *component = dai->component;
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++	const struct cs43130_rate_map *rate_map;
++	unsigned int sclk = cs43130->dais[dai->id].sclk;
++	unsigned int bitwidth_sclk;
++	unsigned int bitwidth_dai = (unsigned int)(params_width(params));
++	unsigned int dop_rate = (unsigned int)(params_rate(params));
++	unsigned int required_clk, ret;
++	u8 dsd_speed;
++
++	cs43130->pll_bypass = true;
++	cs43130_pcm_pdn(component);
++	mutex_lock(&cs43130->clk_mutex);
++	if (!cs43130->clk_req) {
++		/* no DAI is currently using clk */
++		if (!(CS43130_MCLK_22M % params_rate(params))) {
++			required_clk = CS43130_MCLK_22M;
++			cs43130->mclk_int =  CS43130_MCLK_22M;
++			gpiod_set_value_cansleep(snd_allo_clk44gpio, 1);
++			gpiod_set_value_cansleep(snd_allo_clk48gpio, 0);
++			usleep_range(13500, 14000);
++		} else {
++			required_clk = CS43130_MCLK_24M;
++			cs43130->mclk_int =  CS43130_MCLK_24M;
++			gpiod_set_value_cansleep(snd_allo_clk48gpio, 1);
++			gpiod_set_value_cansleep(snd_allo_clk44gpio, 0);
++			usleep_range(13500, 14000);
++		}
++		if (cs43130->pll_bypass)
++			cs43130_change_clksrc(component, CS43130_MCLK_SRC_EXT);
++		else
++			cs43130_change_clksrc(component, CS43130_MCLK_SRC_PLL);
++	}
++
++	cs43130->clk_req++;
++	mutex_unlock(&cs43130->clk_mutex);
++
++	switch (dai->id) {
++	case CS43130_ASP_DOP_DAI:
++	case CS43130_XSP_DOP_DAI:
++		/* DoP bitwidth is always 24-bit */
++		bitwidth_dai = 24;
++		sclk = params_rate(params) * bitwidth_dai *
++				params_channels(params);
++
++		switch (params_rate(params)) {
++		case 176400:
++			dsd_speed = 0;
++			break;
++		case 352800:
++			dsd_speed = 1;
++			break;
++		default:
++			dev_err(component->dev, "Rate(%u) not supported\n",
++				params_rate(params));
++			return -EINVAL;
++		}
++
++		regmap_update_bits(cs43130->regmap, CS43130_DSD_PATH_CTL_2,
++					CS43130_DSD_SPEED_MASK,
++					dsd_speed << CS43130_DSD_SPEED_SHIFT);
++		break;
++	case CS43130_ASP_PCM_DAI:
++		rate_map = cs43130_get_rate_table(params_rate(params));
++		if (!rate_map)
++			return -EINVAL;
++
++		regmap_write(cs43130->regmap, CS43130_SP_SRATE, rate_map->val);
++		if ((dop_rate == 176400) && (bitwidth_dai == 24)) {
++			dsd_speed = 0;
++			regmap_update_bits(cs43130->regmap,
++					CS43130_DSD_PATH_CTL_2,
++					CS43130_DSD_SPEED_MASK,
++					dsd_speed << CS43130_DSD_SPEED_SHIFT);
++			regmap_update_bits(cs43130->regmap,
++					CS43130_DSD_PATH_CTL_2,
++					CS43130_DSD_SRC_MASK,
++					CS43130_DSD_SRC_ASP <<
++					CS43130_DSD_SRC_SHIFT);
++			regmap_update_bits(cs43130->regmap,
++					CS43130_DSD_PATH_CTL_2,
++					CS43130_DSD_EN_MASK, 0x01 <<
++					CS43130_DSD_EN_SHIFT);
++		}
++		break;
++	default:
++		dev_err(component->dev, "Invalid DAI (%d)\n", dai->id);
++		return -EINVAL;
++	}
++
++	switch (dai->id) {
++	case CS43130_ASP_DOP_DAI:
++		regmap_update_bits(cs43130->regmap, CS43130_DSD_PATH_CTL_2,
++				CS43130_DSD_SRC_MASK, CS43130_DSD_SRC_ASP <<
++				CS43130_DSD_SRC_SHIFT);
++		regmap_update_bits(cs43130->regmap, CS43130_DSD_PATH_CTL_2,
++				CS43130_DSD_EN_MASK, 0x01 <<
++				CS43130_DSD_EN_SHIFT);
++		break;
++	case CS43130_XSP_DOP_DAI:
++		regmap_update_bits(cs43130->regmap, CS43130_DSD_PATH_CTL_2,
++				CS43130_DSD_SRC_MASK, CS43130_DSD_SRC_XSP <<
++				CS43130_DSD_SRC_SHIFT);
++		break;
++	}
++	if (!sclk && cs43130->dais[dai->id].dai_mode ==
++						SND_SOC_DAIFMT_CBM_CFM) {
++		/* Calculate SCLK in master mode if unassigned */
++		sclk = params_rate(params) * bitwidth_dai *
++				params_channels(params);
++	}
++	if (!sclk) {
++		/* at this point, SCLK must be set */
++		dev_err(component->dev, "SCLK freq is not set\n");
++		return -EINVAL;
++	}
++
++	bitwidth_sclk = (sclk / params_rate(params)) / params_channels(params);
++	if (bitwidth_sclk < bitwidth_dai) {
++		dev_err(component->dev, "Format not supported: SCLK freq is too low\n");
++		return -EINVAL;
++	}
++
++	dev_dbg(component->dev,
++		"sclk = %u, fs = %d, bitwidth_dai = %u\n",
++		sclk, params_rate(params), bitwidth_dai);
++
++	dev_dbg(component->dev,
++		"bitwidth_sclk = %u, num_ch = %u\n",
++		bitwidth_sclk, params_channels(params));
++
++	cs43130_set_bitwidth(dai->id, bitwidth_dai, cs43130->regmap);
++	cs43130_set_sp_fmt(dai->id, bitwidth_sclk, params, cs43130);
++	ret = cs43130_pwr_up_asp_dac(component);
++	return 0;
++}
++
++static int cs43130_hw_free(struct snd_pcm_substream *substream,
++					struct snd_soc_dai *dai)
++{
++	struct snd_soc_component *component = dai->component;
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++
++	mutex_lock(&cs43130->clk_mutex);
++	cs43130->clk_req--;
++	if (!cs43130->clk_req) {
++		/* no DAI is currently using clk */
++		cs43130_change_clksrc(component, CS43130_MCLK_SRC_RCO);
++		cs43130_pcm_pdn(component);
++	}
++	mutex_unlock(&cs43130->clk_mutex);
++
++	return 0;
++}
++
++static const unsigned int cs43130_asp_src_rates[] = {
++	32000, 44100, 48000, 88200, 96000, 176400, 192000
++};
++
++static const struct snd_pcm_hw_constraint_list cs43130_asp_constraints = {
++	.count  = ARRAY_SIZE(cs43130_asp_src_rates),
++	.list   = cs43130_asp_src_rates,
++};
++
++static int cs43130_pcm_startup(struct snd_pcm_substream *substream,
++					struct snd_soc_dai *dai)
++{
++	return snd_pcm_hw_constraint_list(substream->runtime, 0,
++					SNDRV_PCM_HW_PARAM_RATE,
++					&cs43130_asp_constraints);
++}
++
++static int cs43130_pcm_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
++{
++	struct snd_soc_component *component = codec_dai->component;
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++
++	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
++	case SND_SOC_DAIFMT_CBS_CFS:
++		cs43130->dais[codec_dai->id].dai_mode = SND_SOC_DAIFMT_CBS_CFS;
++		break;
++	case SND_SOC_DAIFMT_CBM_CFM:
++		cs43130->dais[codec_dai->id].dai_mode = SND_SOC_DAIFMT_CBM_CFM;
++		break;
++	default:
++		dev_err(component->dev, "unsupported mode\n");
++		return -EINVAL;
++	}
++
++	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
++	case SND_SOC_DAIFMT_I2S:
++		cs43130->dais[codec_dai->id].dai_format = SND_SOC_DAIFMT_I2S;
++		break;
++	case SND_SOC_DAIFMT_LEFT_J:
++		cs43130->dais[codec_dai->id].dai_format = SND_SOC_DAIFMT_LEFT_J;
++		break;
++	default:
++		dev_err(component->dev,
++			"unsupported audio format\n");
++		return -EINVAL;
++	}
++
++	dev_dbg(component->dev, "dai_id = %d,  dai_mode = %u, dai_format = %u\n",
++			codec_dai->id,
++			cs43130->dais[codec_dai->id].dai_mode,
++			cs43130->dais[codec_dai->id].dai_format);
++
++	return 0;
++}
++
++static int cs43130_set_sysclk(struct snd_soc_dai *codec_dai,
++					int clk_id, unsigned int freq, int dir)
++{
++	struct snd_soc_component *component = codec_dai->component;
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++
++	cs43130->dais[codec_dai->id].sclk = freq;
++	dev_dbg(component->dev, "dai_id = %d,  sclk = %u\n", codec_dai->id,
++				cs43130->dais[codec_dai->id].sclk);
++
++	return 0;
++}
++
++static int cs43130_component_set_sysclk(struct snd_soc_component *component,
++					int clk_id, int source,
++					unsigned int freq, int dir)
++{
++	struct cs43130_priv *cs43130 =
++				snd_soc_component_get_drvdata(component);
++
++	dev_dbg(component->dev, "clk_id = %d, source = %d, freq = %d, dir = %d\n",
++		clk_id, source, freq, dir);
++
++	switch (freq) {
++	case CS43130_MCLK_22M:
++	case CS43130_MCLK_24M:
++		cs43130->mclk = freq;
++		break;
++	default:
++		dev_err(component->dev, "Invalid MCLK INT freq: %u\n", freq);
++		return -EINVAL;
++	}
++
++	if (source == CS43130_MCLK_SRC_EXT) {
++		cs43130->pll_bypass = true;
++	} else {
++		dev_err(component->dev, "Invalid MCLK source\n");
++		return -EINVAL;
++	}
++
++	return 0;
++}
++static u16 const cs43130_ac_freq[CS43130_AC_FREQ] = {
++	24,
++	43,
++	93,
++	200,
++	431,
++	928,
++	2000,
++	4309,
++	9283,
++	20000,
++};
++static const struct snd_soc_dai_ops cs43130_dai_ops = {
++	.startup        = cs43130_pcm_startup,
++	.hw_params	= cs43130_hw_params,
++	.hw_free        = cs43130_hw_free,
++	.set_sysclk     = cs43130_set_sysclk,
++	.set_fmt        = cs43130_pcm_set_fmt,
++};
++
++static struct snd_soc_dai_driver cs43130_codec_dai = {
++	.name = "allo-cs43130",
++	.playback = {
++		.stream_name = "Playback",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.rate_min = 44100,
++		.rate_max = 192000,
++		.formats = SNDRV_PCM_FMTBIT_S16_LE |
++			SNDRV_PCM_FMTBIT_S24_LE |
++			SNDRV_PCM_FMTBIT_S32_LE
++
++	},
++	.ops = &cs43130_dai_ops,
++};
++
++static struct snd_soc_component_driver cs43130_component_driver = {
++	.idle_bias_on           = true,
++	.controls		= cs43130_controls,
++	.num_controls		= ARRAY_SIZE(cs43130_controls),
++	.set_sysclk             = cs43130_component_set_sysclk,
++	.idle_bias_on           = 1,
++	.use_pmdown_time        = 1,
++	.endianness             = 1,
++	.non_legacy_dai_naming  = 1,
++};
++
++static const struct regmap_config cs43130_regmap = {
++	.reg_bits               = 24,
++	.pad_bits               = 8,
++	.val_bits               = 8,
++
++	.max_register           = CS43130_LASTREG,
++	.reg_defaults           = cs43130_reg_defaults,
++	.num_reg_defaults       = ARRAY_SIZE(cs43130_reg_defaults),
++	.readable_reg           = cs43130_readable_register,
++	.precious_reg           = cs43130_precious_register,
++	.volatile_reg           = cs43130_volatile_register,
++	.cache_type             = REGCACHE_RBTREE,
++	/* needed for regcache_sync */
++	.use_single_read        = true,
++	.use_single_write       = true,
++};
++
++static u16 const cs43130_dc_threshold[CS43130_DC_THRESHOLD] = {
++	50,
++	120,
++};
++
++static int cs43130_handle_device_data(struct i2c_client *i2c_client,
++					struct cs43130_priv *cs43130)
++{
++	struct device_node *np = i2c_client->dev.of_node;
++	unsigned int val;
++	int i;
++
++	if (of_property_read_u32(np, "cirrus,xtal-ibias", &val) < 0) {
++	/* Crystal is unused. System clock is used for external MCLK */
++		cs43130->xtal_ibias = CS43130_XTAL_UNUSED;
++		return 0;
++	}
++
++	switch (val) {
++	case 1:
++		cs43130->xtal_ibias = CS43130_XTAL_IBIAS_7_5UA;
++		break;
++	case 2:
++		cs43130->xtal_ibias = CS43130_XTAL_IBIAS_12_5UA;
++		break;
++	case 3:
++		cs43130->xtal_ibias = CS43130_XTAL_IBIAS_15UA;
++		break;
++	default:
++		dev_err(&i2c_client->dev,
++			"Invalid cirrus,xtal-ibias value: %d\n", val);
++		return -EINVAL;
++	}
++
++	cs43130->dc_meas = of_property_read_bool(np, "cirrus,dc-measure");
++	cs43130->ac_meas = of_property_read_bool(np, "cirrus,ac-measure");
++
++	if (of_property_read_u16_array(np, "cirrus,ac-freq", cs43130->ac_freq,
++					CS43130_AC_FREQ) < 0) {
++		for (i = 0; i < CS43130_AC_FREQ; i++)
++			cs43130->ac_freq[i] = cs43130_ac_freq[i];
++	}
++
++	if (of_property_read_u16_array(np, "cirrus,dc-threshold",
++					cs43130->dc_threshold,
++					CS43130_DC_THRESHOLD) < 0) {
++		for (i = 0; i < CS43130_DC_THRESHOLD; i++)
++			cs43130->dc_threshold[i] = cs43130_dc_threshold[i];
++	}
++
++	return 0;
++}
++
++
++static int allo_cs43130_component_probe(struct i2c_client *i2c,
++			     const struct i2c_device_id *id)
++{
++	struct regmap *regmap;
++	struct regmap_config config = cs43130_regmap;
++	struct device *dev = &i2c->dev;
++	struct cs43130_priv *cs43130;
++	unsigned int devid = 0;
++	unsigned int reg;
++	int ret;
++
++	regmap = devm_regmap_init_i2c(i2c, &config);
++	if (IS_ERR(regmap))
++		return PTR_ERR(regmap);
++
++	cs43130 = devm_kzalloc(dev, sizeof(struct cs43130_priv),
++					GFP_KERNEL);
++	if (!cs43130)
++		return -ENOMEM;
++
++	dev_set_drvdata(dev, cs43130);
++	cs43130->regmap = regmap;
++
++	if (i2c->dev.of_node) {
++		ret = cs43130_handle_device_data(i2c, cs43130);
++		if (ret != 0)
++			return ret;
++	}
++	usleep_range(2000, 2050);
++
++	ret = regmap_read(cs43130->regmap, CS43130_DEVID_AB, &reg);
++	devid = (reg & 0xFF) << 12;
++	ret = regmap_read(cs43130->regmap, CS43130_DEVID_CD, &reg);
++	devid |= (reg & 0xFF) << 4;
++	ret = regmap_read(cs43130->regmap, CS43130_DEVID_E, &reg);
++	devid |= (reg & 0xF0) >> 4;
++	if (devid != CS43198_CHIP_ID) {
++		dev_err(dev, "Failed to read Chip or wrong Chip id: %d\n", ret);
++		return ret;
++	}
++
++	cs43130->mclk_int_src = CS43130_MCLK_SRC_RCO;
++	msleep(20);
++
++	ret = snd_soc_register_component(dev, &cs43130_component_driver,
++				    &cs43130_codec_dai, 1);
++	if (ret != 0) {
++		dev_err(dev, "failed to register codec: %d\n", ret);
++		return ret;
++	}
++	regmap_update_bits(cs43130->regmap, CS43130_PAD_INT_CFG,
++			CS43130_ASP_3ST_MASK, 0);
++	regmap_update_bits(cs43130->regmap, CS43130_PAD_INT_CFG,
++			CS43130_XSP_3ST_MASK, 1);
++	regmap_update_bits(cs43130->regmap, CS43130_PWDN_CTL,
++			CS43130_PDN_HP_MASK, 1 << CS43130_PDN_HP_SHIFT);
++	msleep(20);
++	regmap_write(cs43130->regmap, CS43130_CLASS_H_CTL, 0x06);
++	snd_allo_clk44gpio = devm_gpiod_get(dev, "clock44", GPIOD_OUT_HIGH);
++	if (IS_ERR(snd_allo_clk44gpio))
++		dev_err(dev, "devm_gpiod_get() failed\n");
++
++	snd_allo_clk48gpio = devm_gpiod_get(dev, "clock48", GPIOD_OUT_LOW);
++	if (IS_ERR(snd_allo_clk48gpio))
++		dev_err(dev, "devm_gpiod_get() failed\n");
++
++	return 0;
++}
++
++static int allo_cs43130_component_remove(struct i2c_client *i2c)
++{
++	snd_soc_unregister_component(&i2c->dev);
++	return 0;
++}
++
++static const struct i2c_device_id allo_cs43130_component_id[] = {
++	{ "allo-cs43198", },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, allo_cs43130_component_id);
++
++static const struct of_device_id allo_cs43130_codec_of_match[] = {
++	{ .compatible = "allo,allo-cs43198", },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, allo_cs43130_codec_of_match);
++
++static struct i2c_driver allo_cs43130_component_driver = {
++	.probe		= allo_cs43130_component_probe,
++	.remove		= allo_cs43130_component_remove,
++	.id_table	= allo_cs43130_component_id,
++	.driver		= {
++	.name		= "allo-cs43198",
++	.of_match_table = allo_cs43130_codec_of_match,
++	},
++};
++
++module_i2c_driver(allo_cs43130_component_driver);
++
++MODULE_DESCRIPTION("ASoC Allo Boss2 Codec Driver");
++MODULE_AUTHOR("Sudeepkumar <sudeepkumar@cem-solutions.net>");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/allo-katana-codec.c
+@@ -0,0 +1,388 @@
++/*
++ * Driver for the ALLO KATANA CODEC
++ *
++ * Author: Jaikumar <jaikumar@cem-solutions.net>
++ *		Copyright 2018
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/clk.h>
++#include <linux/kernel.h>
++#include <linux/regmap.h>
++#include <linux/regulator/consumer.h>
++#include <linux/gcd.h>
++#include <sound/soc.h>
++#include <sound/soc-dapm.h>
++#include <sound/pcm_params.h>
++#include <sound/tlv.h>
++#include <linux/i2c.h>
++
++
++#define KATANA_CODEC_CHIP_ID		0x30
++#define KATANA_CODEC_VIRT_BASE		0x100
++#define KATANA_CODEC_PAGE		0
++
++#define KATANA_CODEC_CHIP_ID_REG	(KATANA_CODEC_VIRT_BASE + 0)
++#define KATANA_CODEC_RESET		(KATANA_CODEC_VIRT_BASE + 1)
++#define KATANA_CODEC_VOLUME_1		(KATANA_CODEC_VIRT_BASE + 2)
++#define KATANA_CODEC_VOLUME_2		(KATANA_CODEC_VIRT_BASE + 3)
++#define KATANA_CODEC_MUTE		(KATANA_CODEC_VIRT_BASE + 4)
++#define KATANA_CODEC_DSP_PROGRAM	(KATANA_CODEC_VIRT_BASE + 5)
++#define KATANA_CODEC_DEEMPHASIS		(KATANA_CODEC_VIRT_BASE + 6)
++#define KATANA_CODEC_DOP		(KATANA_CODEC_VIRT_BASE + 7)
++#define KATANA_CODEC_FORMAT		(KATANA_CODEC_VIRT_BASE + 8)
++#define KATANA_CODEC_COMMAND		(KATANA_CODEC_VIRT_BASE + 9)
++#define KATANA_CODEC_MUTE_STREAM	(KATANA_CODEC_VIRT_BASE + 10)
++
++#define KATANA_CODEC_MAX_REGISTER	(KATANA_CODEC_VIRT_BASE + 10)
++
++#define KATANA_CODEC_FMT		0xff
++#define KATANA_CODEC_CHAN_MONO		0x00
++#define KATANA_CODEC_CHAN_STEREO	0x80
++#define KATANA_CODEC_ALEN_16		0x10
++#define KATANA_CODEC_ALEN_24		0x20
++#define KATANA_CODEC_ALEN_32		0x30
++#define KATANA_CODEC_RATE_11025		0x01
++#define KATANA_CODEC_RATE_22050		0x02
++#define KATANA_CODEC_RATE_32000		0x03
++#define KATANA_CODEC_RATE_44100		0x04
++#define KATANA_CODEC_RATE_48000		0x05
++#define KATANA_CODEC_RATE_88200		0x06
++#define KATANA_CODEC_RATE_96000		0x07
++#define KATANA_CODEC_RATE_176400	0x08
++#define KATANA_CODEC_RATE_192000	0x09
++#define KATANA_CODEC_RATE_352800	0x0a
++#define KATANA_CODEC_RATE_384000	0x0b
++
++
++struct katana_codec_priv {
++	struct regmap *regmap;
++	int fmt;
++};
++
++static const struct reg_default katana_codec_reg_defaults[] = {
++	{ KATANA_CODEC_RESET,		0x00 },
++	{ KATANA_CODEC_VOLUME_1,	0xF0 },
++	{ KATANA_CODEC_VOLUME_2,	0xF0 },
++	{ KATANA_CODEC_MUTE,		0x00 },
++	{ KATANA_CODEC_DSP_PROGRAM,	0x04 },
++	{ KATANA_CODEC_DEEMPHASIS,	0x00 },
++	{ KATANA_CODEC_DOP,		0x00 },
++	{ KATANA_CODEC_FORMAT,		0xb4 },
++};
++
++static const char * const katana_codec_dsp_program_texts[] = {
++	"Linear Phase Fast Roll-off Filter",
++	"Linear Phase Slow Roll-off Filter",
++	"Minimum Phase Fast Roll-off Filter",
++	"Minimum Phase Slow Roll-off Filter",
++	"Apodizing Fast Roll-off Filter",
++	"Corrected Minimum Phase Fast Roll-off Filter",
++	"Brick Wall Filter",
++};
++
++static const unsigned int katana_codec_dsp_program_values[] = {
++	0,
++	1,
++	2,
++	3,
++	4,
++	6,
++	7,
++};
++
++static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_dsp_program,
++				  KATANA_CODEC_DSP_PROGRAM, 0, 0x07,
++				  katana_codec_dsp_program_texts,
++				  katana_codec_dsp_program_values);
++
++static const char * const katana_codec_deemphasis_texts[] = {
++	"Bypass",
++	"32kHz",
++	"44.1kHz",
++	"48kHz",
++};
++
++static const unsigned int katana_codec_deemphasis_values[] = {
++	0,
++	1,
++	2,
++	3,
++};
++
++static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_deemphasis,
++				  KATANA_CODEC_DEEMPHASIS, 0, 0x03,
++				  katana_codec_deemphasis_texts,
++				  katana_codec_deemphasis_values);
++
++static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(master_tlv, -12750, 0);
++
++static const struct snd_kcontrol_new katana_codec_controls[] = {
++	SOC_DOUBLE_R_TLV("Master Playback Volume", KATANA_CODEC_VOLUME_1,
++			KATANA_CODEC_VOLUME_2, 0, 255, 1, master_tlv),
++	SOC_DOUBLE("Master Playback Switch", KATANA_CODEC_MUTE, 0, 0, 1, 1),
++	SOC_ENUM("DSP Program Route", katana_codec_dsp_program),
++	SOC_ENUM("Deemphasis Route", katana_codec_deemphasis),
++	SOC_SINGLE("DoP Playback Switch", KATANA_CODEC_DOP, 0, 1, 1)
++};
++
++static bool katana_codec_readable_register(struct device *dev,
++				unsigned int reg)
++{
++	switch (reg) {
++	case KATANA_CODEC_CHIP_ID_REG:
++		return true;
++	default:
++		return reg < 0xff;
++	}
++}
++
++static int katana_codec_hw_params(struct snd_pcm_substream *substream,
++			     struct snd_pcm_hw_params *params,
++			     struct snd_soc_dai *dai)
++{
++	struct snd_soc_component *component = dai->component;
++	struct katana_codec_priv *katana_codec =
++		snd_soc_component_get_drvdata(component);
++	int fmt = 0;
++	int ret;
++
++	dev_dbg(component->card->dev, "hw_params %u Hz, %u channels, %u bits\n",
++			params_rate(params),
++			params_channels(params),
++			params_width(params));
++
++	switch (katana_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
++	case SND_SOC_DAIFMT_CBM_CFM: // master
++		if (params_channels(params) == 2)
++			fmt = KATANA_CODEC_CHAN_STEREO;
++		else
++			fmt = KATANA_CODEC_CHAN_MONO;
++
++		switch (params_width(params)) {
++		case 16:
++			fmt |= KATANA_CODEC_ALEN_16;
++			break;
++		case 24:
++			fmt |= KATANA_CODEC_ALEN_24;
++			break;
++		case 32:
++			fmt |= KATANA_CODEC_ALEN_32;
++			break;
++		default:
++			dev_err(component->card->dev, "Bad frame size: %d\n",
++					params_width(params));
++			return -EINVAL;
++		}
++
++		switch (params_rate(params)) {
++		case 44100:
++			fmt |= KATANA_CODEC_RATE_44100;
++			break;
++		case 48000:
++			fmt |= KATANA_CODEC_RATE_48000;
++			break;
++		case 88200:
++			fmt |= KATANA_CODEC_RATE_88200;
++			break;
++		case 96000:
++			fmt |= KATANA_CODEC_RATE_96000;
++			break;
++		case 176400:
++			fmt |= KATANA_CODEC_RATE_176400;
++			break;
++		case 192000:
++			fmt |= KATANA_CODEC_RATE_192000;
++			break;
++		case 352800:
++			fmt |= KATANA_CODEC_RATE_352800;
++			break;
++		case 384000:
++			fmt |= KATANA_CODEC_RATE_384000;
++			break;
++		default:
++			dev_err(component->card->dev, "Bad sample rate: %d\n",
++					params_rate(params));
++			return -EINVAL;
++		}
++
++		ret = regmap_write(katana_codec->regmap, KATANA_CODEC_FORMAT,
++					fmt);
++		if (ret != 0) {
++			dev_err(component->card->dev, "Failed to set format: %d\n", ret);
++			return ret;
++		}
++		break;
++
++	case SND_SOC_DAIFMT_CBS_CFS:
++		break;
++
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int katana_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
++{
++	struct snd_soc_component *component = dai->component;
++	struct katana_codec_priv *katana_codec =
++		snd_soc_component_get_drvdata(component);
++
++	katana_codec->fmt = fmt;
++
++	return 0;
++}
++
++int katana_codec_dai_mute_stream(struct snd_soc_dai *dai, int mute,
++						int stream)
++{
++	struct snd_soc_component *component = dai->component;
++	struct katana_codec_priv *katana_codec =
++		snd_soc_component_get_drvdata(component);
++	int ret = 0;
++
++	ret = regmap_write(katana_codec->regmap, KATANA_CODEC_MUTE_STREAM,
++				mute);
++	if (ret != 0) {
++		dev_err(component->card->dev, "Failed to set mute: %d\n", ret);
++		return ret;
++	}
++	return ret;
++}
++
++static const struct snd_soc_dai_ops katana_codec_dai_ops = {
++	.mute_stream = katana_codec_dai_mute_stream,
++	.hw_params = katana_codec_hw_params,
++	.set_fmt = katana_codec_set_fmt,
++};
++
++static struct snd_soc_dai_driver katana_codec_dai = {
++	.name = "allo-katana-codec",
++	.playback = {
++		.stream_name = "Playback",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.rate_min = 44100,
++		.rate_max = 384000,
++		.formats = SNDRV_PCM_FMTBIT_S16_LE |
++			SNDRV_PCM_FMTBIT_S32_LE
++	},
++	.ops = &katana_codec_dai_ops,
++};
++
++static struct snd_soc_component_driver katana_codec_component_driver = {
++	.idle_bias_on = true,
++
++	.controls		= katana_codec_controls,
++	.num_controls	= ARRAY_SIZE(katana_codec_controls),
++};
++
++static const struct regmap_range_cfg katana_codec_range = {
++	.name = "Pages", .range_min = KATANA_CODEC_VIRT_BASE,
++	.range_max = KATANA_CODEC_MAX_REGISTER,
++	.selector_reg = KATANA_CODEC_PAGE,
++	.selector_mask = 0xff,
++	.window_start = 0, .window_len = 0x100,
++};
++
++const struct regmap_config katana_codec_regmap = {
++	.reg_bits = 8,
++	.val_bits = 8,
++
++	.ranges = &katana_codec_range,
++	.num_ranges = 1,
++
++	.max_register = KATANA_CODEC_MAX_REGISTER,
++	.readable_reg = katana_codec_readable_register,
++	.reg_defaults = katana_codec_reg_defaults,
++	.num_reg_defaults = ARRAY_SIZE(katana_codec_reg_defaults),
++	.cache_type = REGCACHE_RBTREE,
++};
++
++static int allo_katana_component_probe(struct i2c_client *i2c,
++			     const struct i2c_device_id *id)
++{
++	struct regmap *regmap;
++	struct regmap_config config = katana_codec_regmap;
++	struct device *dev = &i2c->dev;
++	struct katana_codec_priv *katana_codec;
++	unsigned int chip_id = 0;
++	int ret;
++
++	regmap = devm_regmap_init_i2c(i2c, &config);
++	if (IS_ERR(regmap))
++		return PTR_ERR(regmap);
++
++	katana_codec = devm_kzalloc(dev, sizeof(struct katana_codec_priv),
++					GFP_KERNEL);
++	if (!katana_codec)
++		return -ENOMEM;
++
++	dev_set_drvdata(dev, katana_codec);
++	katana_codec->regmap = regmap;
++
++	ret = regmap_read(regmap, KATANA_CODEC_CHIP_ID_REG, &chip_id);
++	if ((ret != 0) || (chip_id != KATANA_CODEC_CHIP_ID)) {
++		dev_err(dev, "Failed to read Chip or wrong Chip id: %d\n", ret);
++		return ret;
++	}
++	regmap_update_bits(regmap, KATANA_CODEC_RESET, 0x01, 0x01);
++	msleep(10);
++
++	ret = snd_soc_register_component(dev, &katana_codec_component_driver,
++				    &katana_codec_dai, 1);
++	if (ret != 0) {
++		dev_err(dev, "failed to register codec: %d\n", ret);
++		return ret;
++	}
++
++	return 0;
++}
++
++static int allo_katana_component_remove(struct i2c_client *i2c)
++{
++	snd_soc_unregister_component(&i2c->dev);
++	return 0;
++}
++
++static const struct i2c_device_id allo_katana_component_id[] = {
++	{ "allo-katana-codec", },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, allo_katana_component_id);
++
++static const struct of_device_id allo_katana_codec_of_match[] = {
++	{ .compatible = "allo,allo-katana-codec", },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, allo_katana_codec_of_match);
++
++static struct i2c_driver allo_katana_component_driver = {
++	.probe		= allo_katana_component_probe,
++	.remove		= allo_katana_component_remove,
++	.id_table	= allo_katana_component_id,
++	.driver		= {
++	.name		= "allo-katana-codec",
++	.of_match_table = allo_katana_codec_of_match,
++	},
++};
++
++module_i2c_driver(allo_katana_component_driver);
++
++MODULE_DESCRIPTION("ASoC Allo Katana Codec Driver");
++MODULE_AUTHOR("Jaikumar <jaikumar@cem-solutions.net>");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/allo-piano-dac-plus.c
+@@ -0,0 +1,1063 @@
++/*
++ * ALSA ASoC Machine Driver for Allo Piano DAC Plus Subwoofer
++ *
++ * Author:	Baswaraj K <jaikumar@cem-solutions.net>
++ *		Copyright 2020
++ *		based on code by David Knell <david.knell@gmail.com)
++ *		based on code by Daniel Matuschek <info@crazy-audio.com>
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/gpio/consumer.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <linux/firmware.h>
++#include <linux/delay.h>
++#include <sound/tlv.h>
++#include "../codecs/pcm512x.h"
++
++#define P_DAC_LEFT_MUTE		0x10
++#define P_DAC_RIGHT_MUTE	0x01
++#define P_DAC_MUTE		0x11
++#define P_DAC_UNMUTE		0x00
++#define P_MUTE			1
++#define P_UNMUTE		0
++
++struct dsp_code {
++	char i2c_addr;
++	char offset;
++	char val;
++};
++
++struct glb_pool {
++	struct mutex lock;
++	unsigned int dual_mode;
++	unsigned int set_lowpass;
++	unsigned int set_mode;
++	unsigned int set_rate;
++	unsigned int dsp_page_number;
++};
++
++static bool digital_gain_0db_limit = true;
++bool glb_mclk;
++
++static struct gpio_desc *mute_gpio[2];
++
++static const char * const allo_piano_mode_texts[] = {
++	"None",
++	"2.0",
++	"2.1",
++	"2.2",
++};
++
++static const SOC_ENUM_SINGLE_DECL(allo_piano_mode_enum,
++		0, 0, allo_piano_mode_texts);
++
++static const char * const allo_piano_dual_mode_texts[] = {
++	"None",
++	"Dual-Mono",
++	"Dual-Stereo",
++};
++
++static const SOC_ENUM_SINGLE_DECL(allo_piano_dual_mode_enum,
++		0, 0, allo_piano_dual_mode_texts);
++
++static const char * const allo_piano_dsp_low_pass_texts[] = {
++	"60",
++	"70",
++	"80",
++	"90",
++	"100",
++	"110",
++	"120",
++	"130",
++	"140",
++	"150",
++	"160",
++	"170",
++	"180",
++	"190",
++	"200",
++};
++
++static const SOC_ENUM_SINGLE_DECL(allo_piano_enum,
++		0, 0, allo_piano_dsp_low_pass_texts);
++
++static int __snd_allo_piano_dsp_program(struct snd_soc_pcm_runtime *rtd,
++		unsigned int mode, unsigned int rate, unsigned int lowpass)
++{
++	const struct firmware *fw;
++	struct snd_soc_card *card = rtd->card;
++	struct glb_pool *glb_ptr = card->drvdata;
++	char firmware_name[60];
++	int ret = 0, dac = 0;
++
++	if (rate <= 46000)
++		rate = 44100;
++	else if (rate <= 68000)
++		rate = 48000;
++	else if (rate <= 92000)
++		rate = 88200;
++	else if (rate <= 136000)
++		rate = 96000;
++	else if (rate <= 184000)
++		rate = 176400;
++	else
++		rate = 192000;
++
++	if (lowpass > 14)
++		glb_ptr->set_lowpass = lowpass = 0;
++
++	if (mode > 3)
++		glb_ptr->set_mode = mode = 0;
++
++	if (mode > 0)
++		glb_ptr->dual_mode = 0;
++
++	/* same configuration loaded */
++	if ((rate == glb_ptr->set_rate) && (lowpass == glb_ptr->set_lowpass)
++			&& (mode == glb_ptr->set_mode))
++		return 0;
++
++	switch (mode) {
++	case 0: /* None */
++		return 1;
++
++	case 1: /* 2.0 */
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_MUTE, P_DAC_UNMUTE);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_MUTE, P_DAC_MUTE);
++		glb_ptr->set_rate = rate;
++		glb_ptr->set_mode = mode;
++		glb_ptr->set_lowpass = lowpass;
++		return 1;
++
++	default:
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_MUTE, P_DAC_UNMUTE);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_MUTE, P_DAC_UNMUTE);
++	}
++
++	for (dac = 0; dac < rtd->num_codecs; dac++) {
++		struct dsp_code *dsp_code_read;
++		int i = 1;
++
++		if (dac == 0) { /* high */
++			snprintf(firmware_name, sizeof(firmware_name),
++				"allo/piano/2.2/allo-piano-dsp-%d-%d-%d.bin",
++				rate, ((lowpass * 10) + 60), dac);
++		} else { /* low */
++			snprintf(firmware_name, sizeof(firmware_name),
++				"allo/piano/2.%d/allo-piano-dsp-%d-%d-%d.bin",
++				(mode - 1), rate, ((lowpass * 10) + 60), dac);
++		}
++
++		dev_info(rtd->card->dev, "Dsp Firmware File Name: %s\n",
++				firmware_name);
++
++		ret = request_firmware(&fw, firmware_name, rtd->card->dev);
++		if (ret < 0) {
++			dev_err(rtd->card->dev,
++				"Error: Allo Piano Firmware %s missing. %d\n",
++				firmware_name, ret);
++			goto err;
++		}
++
++		while (i < (fw->size - 1)) {
++			dsp_code_read = (struct dsp_code *)&fw->data[i];
++
++			if (dsp_code_read->offset == 0) {
++				glb_ptr->dsp_page_number = dsp_code_read->val;
++				ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, dac)->component,
++						PCM512x_PAGE_BASE(0),
++						dsp_code_read->val);
++
++			} else if (dsp_code_read->offset != 0) {
++				ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, dac)->component,
++					(PCM512x_PAGE_BASE(
++						glb_ptr->dsp_page_number) +
++					dsp_code_read->offset),
++					dsp_code_read->val);
++			}
++			if (ret < 0) {
++				dev_err(rtd->card->dev,
++					"Failed to write Register: %d\n", ret);
++				release_firmware(fw);
++				goto err;
++			}
++			i = i + 3;
++		}
++		release_firmware(fw);
++	}
++	glb_ptr->set_rate = rate;
++	glb_ptr->set_mode = mode;
++	glb_ptr->set_lowpass = lowpass;
++	return 1;
++
++err:
++	return ret;
++}
++
++static int snd_allo_piano_dsp_program(struct snd_soc_pcm_runtime *rtd,
++		unsigned int mode, unsigned int rate, unsigned int lowpass)
++{
++	struct snd_soc_card *card = rtd->card;
++	struct glb_pool *glb_ptr = card->drvdata;
++	int ret = 0;
++
++	mutex_lock(&glb_ptr->lock);
++
++	ret = __snd_allo_piano_dsp_program(rtd, mode, rate, lowpass);
++
++	mutex_unlock(&glb_ptr->lock);
++
++	return ret;
++}
++
++static int snd_allo_piano_dual_mode_get(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++
++	ucontrol->value.integer.value[0] = glb_ptr->dual_mode;
++
++	return 0;
++}
++
++static int snd_allo_piano_dual_mode_put(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++	struct snd_soc_pcm_runtime *rtd;
++	struct snd_card *snd_card_ptr = card->snd_card;
++	struct snd_kcontrol *kctl;
++	struct soc_mixer_control *mc;
++	unsigned int left_val = 0, right_val = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++
++	if (ucontrol->value.integer.value[0] > 0) {
++		glb_ptr->dual_mode = ucontrol->value.integer.value[0];
++		glb_ptr->set_mode = 0;
++	} else {
++		if (glb_ptr->set_mode <= 0) {
++			glb_ptr->dual_mode = 1;
++			glb_ptr->set_mode = 0;
++		} else {
++			glb_ptr->dual_mode = 0;
++			return 0;
++		}
++	}
++
++	if (glb_ptr->dual_mode == 1) { // Dual Mono
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_MUTE, P_DAC_RIGHT_MUTE);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_MUTE, P_DAC_LEFT_MUTE);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_DIGITAL_VOLUME_3, 0xff);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_2, 0xff);
++
++		list_for_each_entry(kctl, &snd_card_ptr->controls, list) {
++			if (!strncmp(kctl->id.name, "Main Digital Playback Volume",
++				sizeof(kctl->id.name))) {
++				mc = (struct soc_mixer_control *)
++					kctl->private_value;
++				mc->rreg = mc->reg;
++				break;
++			}
++			if (!strncmp(kctl->id.name, "Sub Digital Playback Volume",
++				sizeof(kctl->id.name))) {
++				mc = (struct soc_mixer_control *)
++					kctl->private_value;
++				mc->rreg = mc->reg;
++				break;
++			}
++		}
++	} else {
++		left_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 0)->component,
++						PCM512x_DIGITAL_VOLUME_2);
++		right_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 1)->component,
++						PCM512x_DIGITAL_VOLUME_3);
++
++		list_for_each_entry(kctl, &snd_card_ptr->controls, list) {
++			if (!strncmp(kctl->id.name, "Main Digital Playback Volume",
++				sizeof(kctl->id.name))) {
++				mc = (struct soc_mixer_control *)
++					kctl->private_value;
++				mc->rreg = PCM512x_DIGITAL_VOLUME_3;
++				break;
++			}
++			if (!strncmp(kctl->id.name, "Sub Digital Playback Volume",
++				sizeof(kctl->id.name))) {
++				mc = (struct soc_mixer_control *)
++					kctl->private_value;
++				mc->rreg = PCM512x_DIGITAL_VOLUME_2;
++				break;
++			}
++		}
++
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_DIGITAL_VOLUME_3, left_val);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_2, right_val);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_MUTE, P_DAC_UNMUTE);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_MUTE, P_DAC_UNMUTE);
++	}
++
++	return 0;
++}
++
++static int snd_allo_piano_mode_get(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++
++	ucontrol->value.integer.value[0] = glb_ptr->set_mode;
++	return 0;
++}
++
++static int snd_allo_piano_mode_put(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_pcm_runtime *rtd;
++	struct glb_pool *glb_ptr = card->drvdata;
++	struct snd_card *snd_card_ptr = card->snd_card;
++	struct snd_kcontrol *kctl;
++	struct soc_mixer_control *mc;
++	unsigned int left_val = 0, right_val = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++
++	if ((glb_ptr->dual_mode == 1) &&
++			(ucontrol->value.integer.value[0] > 0)) {
++		left_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 0)->component,
++						PCM512x_DIGITAL_VOLUME_2);
++		right_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 1)->component,
++						PCM512x_DIGITAL_VOLUME_2);
++
++		list_for_each_entry(kctl, &snd_card_ptr->controls, list) {
++			if (!strncmp(kctl->id.name, "Main Digital Playback Volume",
++				sizeof(kctl->id.name))) {
++				mc = (struct soc_mixer_control *)
++					kctl->private_value;
++				mc->rreg = PCM512x_DIGITAL_VOLUME_3;
++				break;
++			}
++			if (!strncmp(kctl->id.name, "Sub Digital Playback Volume",
++				sizeof(kctl->id.name))) {
++				mc = (struct soc_mixer_control *)
++					kctl->private_value;
++				mc->rreg = PCM512x_DIGITAL_VOLUME_2;
++				break;
++			}
++		}
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_DIGITAL_VOLUME_3, left_val);
++		snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_3, right_val);
++	}
++
++	return(snd_allo_piano_dsp_program(rtd,
++				ucontrol->value.integer.value[0],
++				glb_ptr->set_rate, glb_ptr->set_lowpass));
++}
++
++static int snd_allo_piano_lowpass_get(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++
++	ucontrol->value.integer.value[0] = glb_ptr->set_lowpass;
++	return 0;
++}
++
++static int snd_allo_piano_lowpass_put(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_pcm_runtime *rtd;
++	struct glb_pool *glb_ptr = card->drvdata;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	return(snd_allo_piano_dsp_program(rtd,
++				glb_ptr->set_mode, glb_ptr->set_rate,
++				ucontrol->value.integer.value[0]));
++}
++
++static int pcm512x_get_reg_sub(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct soc_mixer_control *mc =
++		(struct soc_mixer_control *)kcontrol->private_value;
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++	struct snd_soc_pcm_runtime *rtd;
++	unsigned int left_val = 0;
++	unsigned int right_val = 0;
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++
++	right_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 1)->component,
++			PCM512x_DIGITAL_VOLUME_3);
++	if (glb_ptr->dual_mode != 1) {
++		left_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_2);
++
++	} else {
++		left_val = right_val;
++	}
++
++	ucontrol->value.integer.value[0] =
++				(~(left_val >> mc->shift)) & mc->max;
++	ucontrol->value.integer.value[1] =
++				(~(right_val >> mc->shift)) & mc->max;
++
++	return 0;
++}
++
++static int pcm512x_set_reg_sub(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct soc_mixer_control *mc =
++		(struct soc_mixer_control *)kcontrol->private_value;
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++	struct snd_soc_pcm_runtime *rtd;
++	unsigned int left_val = (ucontrol->value.integer.value[0] & mc->max);
++	unsigned int right_val = (ucontrol->value.integer.value[1] & mc->max);
++	int ret = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++
++	if (digital_gain_0db_limit) {
++		ret = snd_soc_limit_volume(card, "Subwoofer Playback Volume",
++					207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n",
++				ret);
++	}
++
++	// When in Dual Mono, Sub vol control should not set anything.
++	if (glb_ptr->dual_mode != 1) { //Not in Dual Mono mode
++
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_2, (~left_val));
++		if (ret < 0)
++			return ret;
++
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_3, (~right_val));
++		if (ret < 0)
++			return ret;
++
++	}
++
++	return 1;
++}
++
++static int pcm512x_get_reg_sub_switch(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_pcm_runtime *rtd;
++	int val = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 1)->component, PCM512x_MUTE);
++
++	ucontrol->value.integer.value[0] =
++			(val & P_DAC_LEFT_MUTE) ? P_UNMUTE : P_MUTE;
++	ucontrol->value.integer.value[1] =
++			(val & P_DAC_RIGHT_MUTE) ? P_UNMUTE : P_MUTE;
++
++	return val;
++}
++
++static int pcm512x_set_reg_sub_switch(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_pcm_runtime *rtd;
++	struct glb_pool *glb_ptr = card->drvdata;
++	unsigned int left_val = (ucontrol->value.integer.value[0]);
++	unsigned int right_val = (ucontrol->value.integer.value[1]);
++	int ret = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	if (glb_ptr->set_mode != 1) {
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component, PCM512x_MUTE,
++				~((left_val & 0x01)<<4 | (right_val & 0x01)));
++		if (ret < 0)
++			return ret;
++	}
++	return 1;
++
++}
++
++static int pcm512x_get_reg_master(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct soc_mixer_control *mc =
++		(struct soc_mixer_control *)kcontrol->private_value;
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++	struct snd_soc_pcm_runtime *rtd;
++	unsigned int left_val = 0, right_val = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++
++	left_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 0)->component,
++			PCM512x_DIGITAL_VOLUME_2);
++
++	if (glb_ptr->dual_mode == 1) {  // in Dual Mono mode
++		right_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_3);
++	} else {
++		right_val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_DIGITAL_VOLUME_3);
++	}
++
++	ucontrol->value.integer.value[0] =
++		(~(left_val  >> mc->shift)) & mc->max;
++	ucontrol->value.integer.value[1] =
++		(~(right_val >> mc->shift)) & mc->max;
++
++	return 0;
++}
++
++static int pcm512x_set_reg_master(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct soc_mixer_control *mc =
++		(struct soc_mixer_control *)kcontrol->private_value;
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++	struct snd_soc_pcm_runtime *rtd;
++	unsigned int left_val = (ucontrol->value.integer.value[0] & mc->max);
++	unsigned int right_val = (ucontrol->value.integer.value[1] & mc->max);
++	int ret = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++
++	if (digital_gain_0db_limit) {
++		ret = snd_soc_limit_volume(card, "Master Playback Volume",
++					207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n",
++				ret);
++	}
++
++	if (glb_ptr->dual_mode == 1) { //in Dual Mono Mode
++
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_DIGITAL_VOLUME_2, (~left_val));
++		if (ret < 0)
++			return ret;
++
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component,
++				PCM512x_DIGITAL_VOLUME_3, (~right_val));
++		if (ret < 0)
++			return ret;
++
++	} else {
++
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_DIGITAL_VOLUME_2, (~left_val));
++		if (ret < 0)
++			return ret;
++
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component,
++				PCM512x_DIGITAL_VOLUME_3, (~right_val));
++		if (ret < 0)
++			return ret;
++
++	}
++	return 1;
++}
++
++static int pcm512x_get_reg_master_switch(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct glb_pool *glb_ptr = card->drvdata;
++	struct snd_soc_pcm_runtime *rtd;
++	int val = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++
++	val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 0)->component, PCM512x_MUTE);
++
++	ucontrol->value.integer.value[0] =
++			(val & P_DAC_LEFT_MUTE) ? P_UNMUTE : P_MUTE;
++
++	if (glb_ptr->dual_mode == 1) {
++		val = snd_soc_component_read(asoc_rtd_to_codec(rtd, 1)->component, PCM512x_MUTE);
++	}
++	ucontrol->value.integer.value[1] =
++			(val & P_DAC_RIGHT_MUTE) ? P_UNMUTE : P_MUTE;
++
++	return val;
++}
++
++static int pcm512x_set_reg_master_switch(struct snd_kcontrol *kcontrol,
++		struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_pcm_runtime *rtd;
++	struct glb_pool *glb_ptr = card->drvdata;
++	unsigned int left_val = (ucontrol->value.integer.value[0]);
++	unsigned int right_val = (ucontrol->value.integer.value[1]);
++	int ret = 0;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	if (glb_ptr->dual_mode == 1) {
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component, PCM512x_MUTE,
++				~((left_val & 0x01)<<4));
++		if (ret < 0)
++			return ret;
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component, PCM512x_MUTE,
++				~((right_val & 0x01)));
++		if (ret < 0)
++			return ret;
++
++	} else if (glb_ptr->set_mode == 1) {
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component, PCM512x_MUTE,
++				~((left_val & 0x01)<<4 | (right_val & 0x01)));
++		if (ret < 0)
++			return ret;
++
++	} else {
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 0)->component, PCM512x_MUTE,
++				~((left_val & 0x01)<<4 | (right_val & 0x01)));
++		if (ret < 0)
++			return ret;
++
++		ret = snd_soc_component_write(asoc_rtd_to_codec(rtd, 1)->component, PCM512x_MUTE,
++				~((left_val & 0x01)<<4 | (right_val & 0x01)));
++		if (ret < 0)
++			return ret;
++	}
++	return 1;
++}
++
++static const DECLARE_TLV_DB_SCALE(digital_tlv_sub, -10350, 50, 1);
++static const DECLARE_TLV_DB_SCALE(digital_tlv_master, -10350, 50, 1);
++
++static const struct snd_kcontrol_new allo_piano_controls[] = {
++	SOC_ENUM_EXT("Subwoofer mode Route",
++			allo_piano_mode_enum,
++			snd_allo_piano_mode_get,
++			snd_allo_piano_mode_put),
++
++	SOC_ENUM_EXT("Dual Mode Route",
++			allo_piano_dual_mode_enum,
++			snd_allo_piano_dual_mode_get,
++			snd_allo_piano_dual_mode_put),
++
++	SOC_ENUM_EXT("Lowpass Route", allo_piano_enum,
++			snd_allo_piano_lowpass_get,
++			snd_allo_piano_lowpass_put),
++
++	SOC_DOUBLE_R_EXT_TLV("Subwoofer Playback Volume",
++			PCM512x_DIGITAL_VOLUME_2,
++			PCM512x_DIGITAL_VOLUME_3, 0, 255, 1,
++			pcm512x_get_reg_sub,
++			pcm512x_set_reg_sub,
++			digital_tlv_sub),
++
++	SOC_DOUBLE_EXT("Subwoofer Playback Switch",
++			PCM512x_MUTE,
++			PCM512x_RQML_SHIFT,
++			PCM512x_RQMR_SHIFT, 1, 1,
++			pcm512x_get_reg_sub_switch,
++			pcm512x_set_reg_sub_switch),
++
++	SOC_DOUBLE_R_EXT_TLV("Master Playback Volume",
++			PCM512x_DIGITAL_VOLUME_2,
++			PCM512x_DIGITAL_VOLUME_3, 0, 255, 1,
++			pcm512x_get_reg_master,
++			pcm512x_set_reg_master,
++			digital_tlv_master),
++
++	SOC_DOUBLE_EXT("Master Playback Switch",
++			PCM512x_MUTE,
++			PCM512x_RQML_SHIFT,
++			PCM512x_RQMR_SHIFT, 1, 1,
++			pcm512x_get_reg_master_switch,
++			pcm512x_set_reg_master_switch),
++};
++
++static const char * const codec_ctl_pfx[] = { "Main", "Sub" };
++static const char * const codec_ctl_name[] = {
++	"Digital Playback Volume",
++	"Digital Playback Switch",
++	"Auto Mute Mono Switch",
++	"Auto Mute Switch",
++	"Auto Mute Time Left",
++	"Auto Mute Time Right",
++	"Clock Missing Period",
++	"Max Overclock DAC",
++	"Max Overclock DSP",
++	"Max Overclock PLL",
++	"Volume Ramp Down Emergency Rate",
++	"Volume Ramp Down Emergency Step",
++	"Volume Ramp Up Rate",
++	"Volume Ramp Down Rate",
++	"Volume Ramp Up Step",
++	"Volume Ramp Down Step"
++};
++
++static int snd_allo_piano_dac_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_card *card = rtd->card;
++	struct glb_pool *glb_ptr;
++	struct snd_kcontrol *kctl;
++	int i, j;
++
++	glb_ptr = kzalloc(sizeof(struct glb_pool), GFP_KERNEL);
++	if (!glb_ptr)
++		return -ENOMEM;
++
++	card->drvdata = glb_ptr;
++	glb_ptr->dual_mode = 2;
++	glb_ptr->set_mode = 0;
++
++	mutex_init(&glb_ptr->lock);
++
++	if (digital_gain_0db_limit) {
++		int ret;
++
++		//Set volume limit on both dacs
++		for (i = 0; i < ARRAY_SIZE(codec_ctl_pfx); i++) {
++			char cname[256];
++
++			sprintf(cname, "%s %s", codec_ctl_pfx[i], codec_ctl_name[0]);
++			ret = snd_soc_limit_volume(card, cname, 207);
++			if (ret < 0)
++				dev_warn(card->dev, "Failed to set volume limit: %d\n",
++					ret);
++		}
++	}
++
++	// Remove codec controls
++	for (i = 0; i < ARRAY_SIZE(codec_ctl_pfx); i++) {
++		for (j = 0; j < ARRAY_SIZE(codec_ctl_name); j++) {
++			char cname[256];
++
++			sprintf(cname, "%s %s", codec_ctl_pfx[i], codec_ctl_name[j]);
++			kctl = snd_soc_card_get_kcontrol(card, cname);
++			if (!kctl) {
++				dev_err(rtd->card->dev, "Control %s not found\n",
++				       cname);
++			} else {
++				kctl->vd[0].access =
++					SNDRV_CTL_ELEM_ACCESS_READWRITE;
++				snd_ctl_remove(card->snd_card, kctl);
++			}
++		}
++	}
++
++	return 0;
++}
++
++static void snd_allo_piano_gpio_mute(struct snd_soc_card *card)
++{
++	if (mute_gpio[0])
++		gpiod_set_value_cansleep(mute_gpio[0], P_MUTE);
++
++	if (mute_gpio[1])
++		gpiod_set_value_cansleep(mute_gpio[1], P_MUTE);
++}
++
++static void snd_allo_piano_gpio_unmute(struct snd_soc_card *card)
++{
++	if (mute_gpio[0])
++		gpiod_set_value_cansleep(mute_gpio[0], P_UNMUTE);
++
++	if (mute_gpio[1])
++		gpiod_set_value_cansleep(mute_gpio[1], P_UNMUTE);
++}
++
++static int snd_allo_piano_set_bias_level(struct snd_soc_card *card,
++	struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level)
++{
++	struct snd_soc_pcm_runtime *rtd;
++	struct snd_soc_dai *codec_dai;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	if (dapm->dev != codec_dai->dev)
++		return 0;
++
++	switch (level) {
++	case SND_SOC_BIAS_PREPARE:
++		if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
++			break;
++		/* UNMUTE DAC */
++		snd_allo_piano_gpio_unmute(card);
++		break;
++
++	case SND_SOC_BIAS_STANDBY:
++		if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
++			break;
++		/* MUTE DAC */
++		snd_allo_piano_gpio_mute(card);
++		break;
++
++	default:
++		break;
++	}
++
++	return 0;
++}
++
++static int snd_allo_piano_dac_startup(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_card *card = rtd->card;
++
++	snd_allo_piano_gpio_mute(card);
++
++	return 0;
++}
++
++static int snd_allo_piano_dac_hw_params(
++		struct snd_pcm_substream *substream,
++		struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	unsigned int rate = params_rate(params);
++	struct snd_soc_card *card = rtd->card;
++	struct glb_pool *glb_ptr = card->drvdata;
++	int ret = 0, val = 0, dac;
++
++	for (dac = 0; (glb_mclk && dac < 2); dac++) {
++		/* Configure the PLL clock reference for both the Codecs */
++		val = snd_soc_component_read(asoc_rtd_to_codec(rtd, dac)->component,
++					PCM512x_RATE_DET_4);
++
++		if (val & 0x40) {
++			snd_soc_component_write(asoc_rtd_to_codec(rtd, dac)->component,
++					PCM512x_PLL_REF,
++					PCM512x_SREF_BCK);
++
++			dev_info(asoc_rtd_to_codec(rtd, dac)->component->dev,
++				"Setting BCLK as input clock & Enable PLL\n");
++		} else {
++			snd_soc_component_write(asoc_rtd_to_codec(rtd, dac)->component,
++					PCM512x_PLL_EN,
++					0x00);
++
++			snd_soc_component_write(asoc_rtd_to_codec(rtd, dac)->component,
++					PCM512x_PLL_REF,
++					PCM512x_SREF_SCK);
++
++			dev_info(asoc_rtd_to_codec(rtd, dac)->component->dev,
++				"Setting SCLK as input clock & disabled PLL\n");
++		}
++	}
++
++	ret = snd_allo_piano_dsp_program(rtd, glb_ptr->set_mode, rate,
++						glb_ptr->set_lowpass);
++	if (ret < 0)
++		return ret;
++
++	return ret;
++}
++
++static int snd_allo_piano_dac_prepare(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_card *card = rtd->card;
++
++	snd_allo_piano_gpio_unmute(card);
++
++	return 0;
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_allo_piano_dac_ops = {
++	.startup = snd_allo_piano_dac_startup,
++	.hw_params = snd_allo_piano_dac_hw_params,
++	.prepare = snd_allo_piano_dac_prepare,
++};
++
++static struct snd_soc_dai_link_component allo_piano_2_1_codecs[] = {
++	{
++		.dai_name = "pcm512x-hifi",
++	},
++	{
++		.dai_name = "pcm512x-hifi",
++	},
++};
++
++SND_SOC_DAILINK_DEFS(allo_piano_dai_plus,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004c", "pcm512x-hifi"),
++			   COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_allo_piano_dac_dai[] = {
++	{
++		.name		= "PianoDACPlus",
++		.stream_name	= "PianoDACPlus",
++		.dai_fmt	= SND_SOC_DAIFMT_I2S |
++				SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++		.ops		= &snd_allo_piano_dac_ops,
++		.init		= snd_allo_piano_dac_init,
++		SND_SOC_DAILINK_REG(allo_piano_dai_plus),
++	},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_allo_piano_dac = {
++	.name = "PianoDACPlus",
++	.owner = THIS_MODULE,
++	.dai_link = snd_allo_piano_dac_dai,
++	.num_links = ARRAY_SIZE(snd_allo_piano_dac_dai),
++	.controls = allo_piano_controls,
++	.num_controls = ARRAY_SIZE(allo_piano_controls),
++};
++
++static int snd_allo_piano_dac_probe(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = &snd_allo_piano_dac;
++	int ret = 0, i = 0;
++
++	card->dev = &pdev->dev;
++	platform_set_drvdata(pdev, &snd_allo_piano_dac);
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_allo_piano_dac_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++						"i2s-controller", 0);
++		if (i2s_node) {
++			for (i = 0; i < card->num_links; i++) {
++				dai->cpus->dai_name = NULL;
++				dai->cpus->of_node = i2s_node;
++				dai->platforms->name = NULL;
++				dai->platforms->of_node = i2s_node;
++			}
++		}
++		digital_gain_0db_limit =
++			!of_property_read_bool(pdev->dev.of_node,
++						"allo,24db_digital_gain");
++
++		glb_mclk = of_property_read_bool(pdev->dev.of_node,
++						"allo,glb_mclk");
++
++		allo_piano_2_1_codecs[0].of_node =
++			of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
++		if (!allo_piano_2_1_codecs[0].of_node) {
++			dev_err(&pdev->dev,
++				"Property 'audio-codec' missing or invalid\n");
++			return -EINVAL;
++		}
++
++		allo_piano_2_1_codecs[1].of_node =
++			of_parse_phandle(pdev->dev.of_node, "audio-codec", 1);
++		if (!allo_piano_2_1_codecs[1].of_node) {
++			dev_err(&pdev->dev,
++				"Property 'audio-codec' missing or invalid\n");
++			return -EINVAL;
++		}
++
++		mute_gpio[0] = devm_gpiod_get_optional(&pdev->dev, "mute1",
++							GPIOD_OUT_LOW);
++		if (IS_ERR(mute_gpio[0])) {
++			ret = PTR_ERR(mute_gpio[0]);
++			dev_err(&pdev->dev,
++				"failed to get mute1 gpio6: %d\n", ret);
++			return ret;
++		}
++
++		mute_gpio[1] = devm_gpiod_get_optional(&pdev->dev, "mute2",
++							GPIOD_OUT_LOW);
++		if (IS_ERR(mute_gpio[1])) {
++			ret = PTR_ERR(mute_gpio[1]);
++			dev_err(&pdev->dev,
++				"failed to get mute2 gpio25: %d\n", ret);
++			return ret;
++		}
++
++		if (mute_gpio[0] && mute_gpio[1])
++			snd_allo_piano_dac.set_bias_level =
++				snd_allo_piano_set_bias_level;
++
++		ret = snd_soc_register_card(&snd_allo_piano_dac);
++		if (ret < 0) {
++			dev_err(&pdev->dev,
++				"snd_soc_register_card() failed: %d\n", ret);
++			return ret;
++		}
++
++		if ((mute_gpio[0]) && (mute_gpio[1]))
++			snd_allo_piano_gpio_mute(&snd_allo_piano_dac);
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++static int snd_allo_piano_dac_remove(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = platform_get_drvdata(pdev);
++
++	kfree(&card->drvdata);
++	snd_allo_piano_gpio_mute(&snd_allo_piano_dac);
++	return snd_soc_unregister_card(&snd_allo_piano_dac);
++}
++
++static const struct of_device_id snd_allo_piano_dac_of_match[] = {
++	{ .compatible = "allo,piano-dac-plus", },
++	{ /* sentinel */ },
++};
++
++MODULE_DEVICE_TABLE(of, snd_allo_piano_dac_of_match);
++
++static struct platform_driver snd_allo_piano_dac_driver = {
++	.driver = {
++		.name = "snd-allo-piano-dac-plus",
++		.owner = THIS_MODULE,
++		.of_match_table = snd_allo_piano_dac_of_match,
++	},
++	.probe = snd_allo_piano_dac_probe,
++	.remove = snd_allo_piano_dac_remove,
++};
++
++module_platform_driver(snd_allo_piano_dac_driver);
++
++MODULE_AUTHOR("Baswaraj K <jaikumar@cem-solutions.net>");
++MODULE_DESCRIPTION("ALSA ASoC Machine Driver for Allo Piano DAC Plus");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/allo-piano-dac.c
+@@ -0,0 +1,122 @@
++/*
++ * ALSA ASoC Machine Driver for Allo Piano DAC
++ *
++ * Author:	Baswaraj K <jaikumar@cem-solutions.net>
++ *		Copyright 2016
++ *		based on code by Daniel Matuschek <info@crazy-audio.com>
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++
++static bool digital_gain_0db_limit = true;
++
++static int snd_allo_piano_dac_init(struct snd_soc_pcm_runtime *rtd)
++{
++	if (digital_gain_0db_limit) {
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume",
++					   207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n",
++				 ret);
++	}
++
++	return 0;
++}
++
++SND_SOC_DAILINK_DEFS(allo_piano_dai,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004c", "pcm512x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_allo_piano_dac_dai[] = {
++{
++	.name		= "Piano DAC",
++	.stream_name	= "Piano DAC HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S |
++			  SND_SOC_DAIFMT_NB_NF |
++			  SND_SOC_DAIFMT_CBS_CFS,
++	.init		= snd_allo_piano_dac_init,
++	SND_SOC_DAILINK_REG(allo_piano_dai),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_allo_piano_dac = {
++	.name         = "PianoDAC",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_allo_piano_dac_dai,
++	.num_links    = ARRAY_SIZE(snd_allo_piano_dac_dai),
++};
++
++static int snd_allo_piano_dac_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_allo_piano_dac.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_allo_piano_dac_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					    "i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++
++		digital_gain_0db_limit = !of_property_read_bool(
++			pdev->dev.of_node, "allo,24db_digital_gain");
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_allo_piano_dac);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_allo_piano_dac_of_match[] = {
++	{ .compatible = "allo,piano-dac", },
++	{ /* sentinel */ },
++};
++MODULE_DEVICE_TABLE(of, snd_allo_piano_dac_of_match);
++
++static struct platform_driver snd_allo_piano_dac_driver = {
++	.driver = {
++		.name   = "snd-allo-piano-dac",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_allo_piano_dac_of_match,
++	},
++	.probe          = snd_allo_piano_dac_probe,
++};
++
++module_platform_driver(snd_allo_piano_dac_driver);
++
++MODULE_AUTHOR("Baswaraj K <jaikumar@cem-solutions.net>");
++MODULE_DESCRIPTION("ALSA ASoC Machine Driver for Allo Piano DAC");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/audioinjector-isolated-soundcard.c
+@@ -0,0 +1,183 @@
++/*
++ * ASoC Driver for AudioInjector.net isolated soundcard
++ *
++ *  Created on: 20-February-2020
++ *      Author: flatmax@flatmax.org
++ *              based on audioinjector-octo-soundcard.c
++ *
++ * Copyright (C) 2020 Flatmax Pty. Ltd.
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/types.h>
++#include <linux/gpio/consumer.h>
++
++#include <sound/core.h>
++#include <sound/soc.h>
++#include <sound/pcm_params.h>
++#include <sound/control.h>
++
++static struct gpio_desc *mute_gpio;
++
++static const unsigned int audioinjector_isolated_rates[] = {
++	192000, 96000, 48000, 32000, 24000, 16000, 8000
++};
++
++static struct snd_pcm_hw_constraint_list audioinjector_isolated_constraints = {
++	.list = audioinjector_isolated_rates,
++	.count = ARRAY_SIZE(audioinjector_isolated_rates),
++};
++
++static int audioinjector_isolated_dai_init(struct snd_soc_pcm_runtime *rtd)
++{
++	int ret=snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 24576000, 0);
++	if (ret)
++		return ret;
++
++	return snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), 64);
++}
++
++static int audioinjector_isolated_startup(struct snd_pcm_substream *substream)
++{
++	snd_pcm_hw_constraint_list(substream->runtime, 0,
++				SNDRV_PCM_HW_PARAM_RATE, &audioinjector_isolated_constraints);
++
++	return 0;
++}
++
++static int audioinjector_isolated_trigger(struct snd_pcm_substream *substream,
++								int cmd){
++
++	switch (cmd) {
++	case SNDRV_PCM_TRIGGER_STOP:
++	case SNDRV_PCM_TRIGGER_SUSPEND:
++	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++		gpiod_set_value(mute_gpio, 0);
++		break;
++	case SNDRV_PCM_TRIGGER_START:
++	case SNDRV_PCM_TRIGGER_RESUME:
++	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++		gpiod_set_value(mute_gpio, 1);
++		break;
++	default:
++		return -EINVAL;
++	}
++	return 0;
++}
++
++static struct snd_soc_ops audioinjector_isolated_ops = {
++	.startup	= audioinjector_isolated_startup,
++	.trigger = audioinjector_isolated_trigger,
++};
++
++SND_SOC_DAILINK_DEFS(audioinjector_isolated,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("cs4271.1-0010", "cs4271-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link audioinjector_isolated_dai[] = {
++	{
++		.name = "AudioInjector ISO",
++		.stream_name = "AI-HIFI",
++		.ops = &audioinjector_isolated_ops,
++		.init = audioinjector_isolated_dai_init,
++		.symmetric_rate = 1,
++		.symmetric_channels = 1,
++		.dai_fmt = SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|SND_SOC_DAIFMT_NB_NF,
++		SND_SOC_DAILINK_REG(audioinjector_isolated),
++	}
++};
++
++static const struct snd_soc_dapm_widget audioinjector_isolated_widgets[] = {
++	SND_SOC_DAPM_OUTPUT("OUTPUTS"),
++	SND_SOC_DAPM_INPUT("INPUTS"),
++};
++
++static const struct snd_soc_dapm_route audioinjector_isolated_route[] = {
++	/* Balanced outputs */
++	{"OUTPUTS", NULL, "AOUTA+"},
++	{"OUTPUTS", NULL, "AOUTA-"},
++	{"OUTPUTS", NULL, "AOUTB+"},
++	{"OUTPUTS", NULL, "AOUTB-"},
++
++	/* Balanced inputs */
++	{"AINA", NULL, "INPUTS"},
++	{"AINB", NULL, "INPUTS"},
++};
++
++static struct snd_soc_card snd_soc_audioinjector_isolated = {
++	.name = "audioinjector-isolated-soundcard",
++	.dai_link = audioinjector_isolated_dai,
++	.num_links = ARRAY_SIZE(audioinjector_isolated_dai),
++
++	.dapm_widgets = audioinjector_isolated_widgets,
++	.num_dapm_widgets = ARRAY_SIZE(audioinjector_isolated_widgets),
++	.dapm_routes = audioinjector_isolated_route,
++	.num_dapm_routes = ARRAY_SIZE(audioinjector_isolated_route),
++};
++
++static int audioinjector_isolated_probe(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = &snd_soc_audioinjector_isolated;
++	int ret;
++
++	card->dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct snd_soc_dai_link *dai = &audioinjector_isolated_dai[0];
++		struct device_node *i2s_node =
++					of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		} else {
++				dev_err(&pdev->dev,
++				"i2s-controller missing or invalid in DT\n");
++				return -EINVAL;
++		}
++
++		mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute", GPIOD_OUT_LOW);
++		if (IS_ERR(mute_gpio)){
++			dev_err(&pdev->dev, "mute gpio not found in dt overlay\n");
++			return PTR_ERR(mute_gpio);
++		}
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, card);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
++	return ret;
++}
++
++static const struct of_device_id audioinjector_isolated_of_match[] = {
++	{ .compatible = "ai,audioinjector-isolated-soundcard", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, audioinjector_isolated_of_match);
++
++static struct platform_driver audioinjector_isolated_driver = {
++	.driver	= {
++		.name			= "audioinjector-isolated",
++		.owner			= THIS_MODULE,
++		.of_match_table = audioinjector_isolated_of_match,
++	},
++	.probe	= audioinjector_isolated_probe,
++};
++
++module_platform_driver(audioinjector_isolated_driver);
++MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
++MODULE_DESCRIPTION("AudioInjector.net isolated Soundcard");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:audioinjector-isolated-soundcard");
+--- /dev/null
++++ b/sound/soc/bcm/audioinjector-octo-soundcard.c
+@@ -0,0 +1,346 @@
++/*
++ * ASoC Driver for AudioInjector Pi octo channel soundcard (hat)
++ *
++ *  Created on: 27-October-2016
++ *      Author: flatmax@flatmax.org
++ *              based on audioinjector-pi-soundcard.c
++ *
++ * Copyright (C) 2016 Flatmax Pty. Ltd.
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/types.h>
++#include <linux/gpio/consumer.h>
++
++#include <sound/core.h>
++#include <sound/soc.h>
++#include <sound/pcm_params.h>
++#include <sound/control.h>
++
++static struct gpio_descs *mult_gpios;
++static struct gpio_desc *codec_rst_gpio;
++static unsigned int audioinjector_octo_rate;
++static bool non_stop_clocks;
++
++static const unsigned int audioinjector_octo_rates[] = {
++	96000, 48000, 32000, 24000, 16000, 8000, 88200, 44100, 29400, 22050, 14700,
++};
++
++static struct snd_pcm_hw_constraint_list audioinjector_octo_constraints = {
++	.list = audioinjector_octo_rates,
++	.count = ARRAY_SIZE(audioinjector_octo_rates),
++};
++
++static int audioinjector_octo_dai_init(struct snd_soc_pcm_runtime *rtd)
++{
++	return snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), 64);
++}
++
++static int audioinjector_octo_startup(struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_min = 8;
++	asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_max = 8;
++	asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_min = 8;
++	asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_max = 8;
++	asoc_rtd_to_codec(rtd, 0)->driver->capture.channels_max = 8;
++
++	snd_pcm_hw_constraint_list(substream->runtime, 0,
++				SNDRV_PCM_HW_PARAM_RATE,
++				&audioinjector_octo_constraints);
++
++	return 0;
++}
++
++static void audioinjector_octo_shutdown(struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_min = 2;
++	asoc_rtd_to_cpu(rtd, 0)->driver->playback.channels_max = 2;
++	asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_min = 2;
++	asoc_rtd_to_cpu(rtd, 0)->driver->capture.channels_max = 2;
++	asoc_rtd_to_codec(rtd, 0)->driver->capture.channels_max = 6;
++}
++
++static int audioinjector_octo_hw_params(struct snd_pcm_substream *substream,
++	struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++
++	// set codec DAI configuration
++	int ret = snd_soc_dai_set_fmt(asoc_rtd_to_codec(rtd, 0),
++			SND_SOC_DAIFMT_CBS_CFS|SND_SOC_DAIFMT_DSP_A|
++			SND_SOC_DAIFMT_NB_NF);
++	if (ret < 0)
++		return ret;
++
++	// set cpu DAI configuration
++	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
++			SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|
++			SND_SOC_DAIFMT_NB_NF);
++	if (ret < 0)
++		return ret;
++
++	audioinjector_octo_rate = params_rate(params);
++
++	// Set the correct sysclock for the codec
++	switch (audioinjector_octo_rate) {
++	case 96000:
++	case 48000:
++		return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 49152000,
++									0);
++		break;
++	case 24000:
++		return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 49152000/2,
++									0);
++		break;
++	case 32000:
++	case 16000:
++		return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 49152000/3,
++									0);
++		break;
++	case 8000:
++		return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 49152000/6,
++									0);
++		break;
++	case 88200:
++	case 44100:
++		return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 45185400,
++									0);
++		break;
++	case 22050:
++		return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 45185400/2,
++									0);
++		break;
++	case 29400:
++	case 14700:
++		return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), 0, 45185400/3,
++									0);
++		break;
++	default:
++		return -EINVAL;
++	}
++}
++
++static int audioinjector_octo_trigger(struct snd_pcm_substream *substream,
++								int cmd){
++	DECLARE_BITMAP(mult, 4);
++
++	memset(mult, 0, sizeof(mult));
++
++	switch (cmd) {
++	case SNDRV_PCM_TRIGGER_STOP:
++	case SNDRV_PCM_TRIGGER_SUSPEND:
++	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++		if (!non_stop_clocks)
++			break;
++		/* fall through */
++	case SNDRV_PCM_TRIGGER_START:
++	case SNDRV_PCM_TRIGGER_RESUME:
++	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++		switch (audioinjector_octo_rate) {
++		case 96000:
++			__assign_bit(3, mult, 1);
++			/* fall through */
++		case 88200:
++			__assign_bit(1, mult, 1);
++			__assign_bit(2, mult, 1);
++			break;
++		case 48000:
++			__assign_bit(3, mult, 1);
++			/* fall through */
++		case 44100:
++			__assign_bit(2, mult, 1);
++			break;
++		case 32000:
++			__assign_bit(3, mult, 1);
++			/* fall through */
++		case 29400:
++			__assign_bit(0, mult, 1);
++			__assign_bit(1, mult, 1);
++			break;
++		case 24000:
++			__assign_bit(3, mult, 1);
++			/* fall through */
++		case 22050:
++			__assign_bit(1, mult, 1);
++			break;
++		case 16000:
++			__assign_bit(3, mult, 1);
++			/* fall through */
++		case 14700:
++			__assign_bit(0, mult, 1);
++			break;
++		case 8000:
++			__assign_bit(3, mult, 1);
++			break;
++		default:
++			return -EINVAL;
++		}
++		break;
++	default:
++		return -EINVAL;
++	}
++	gpiod_set_array_value_cansleep(mult_gpios->ndescs, mult_gpios->desc,
++				       NULL, mult);
++
++	return 0;
++}
++
++static struct snd_soc_ops audioinjector_octo_ops = {
++	.startup	= audioinjector_octo_startup,
++	.shutdown	= audioinjector_octo_shutdown,
++	.hw_params = audioinjector_octo_hw_params,
++	.trigger = audioinjector_octo_trigger,
++};
++
++SND_SOC_DAILINK_DEFS(audioinjector_octo,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link audioinjector_octo_dai[] = {
++	{
++		.name = "AudioInjector Octo",
++		.stream_name = "AudioInject-HIFI",
++		.ops = &audioinjector_octo_ops,
++		.init = audioinjector_octo_dai_init,
++		.symmetric_rate = 1,
++		.symmetric_channels = 1,
++		SND_SOC_DAILINK_REG(audioinjector_octo),
++	},
++};
++
++static const struct snd_soc_dapm_widget audioinjector_octo_widgets[] = {
++	SND_SOC_DAPM_OUTPUT("OUTPUTS0"),
++	SND_SOC_DAPM_OUTPUT("OUTPUTS1"),
++	SND_SOC_DAPM_OUTPUT("OUTPUTS2"),
++	SND_SOC_DAPM_OUTPUT("OUTPUTS3"),
++	SND_SOC_DAPM_INPUT("INPUTS0"),
++	SND_SOC_DAPM_INPUT("INPUTS1"),
++	SND_SOC_DAPM_INPUT("INPUTS2"),
++};
++
++static const struct snd_soc_dapm_route audioinjector_octo_route[] = {
++	/* Balanced outputs */
++	{"OUTPUTS0", NULL, "AOUT1L"},
++	{"OUTPUTS0", NULL, "AOUT1R"},
++	{"OUTPUTS1", NULL, "AOUT2L"},
++	{"OUTPUTS1", NULL, "AOUT2R"},
++	{"OUTPUTS2", NULL, "AOUT3L"},
++	{"OUTPUTS2", NULL, "AOUT3R"},
++	{"OUTPUTS3", NULL, "AOUT4L"},
++	{"OUTPUTS3", NULL, "AOUT4R"},
++
++	/* Balanced inputs */
++	{"AIN1L", NULL, "INPUTS0"},
++	{"AIN1R", NULL, "INPUTS0"},
++	{"AIN2L", NULL, "INPUTS1"},
++	{"AIN2R", NULL, "INPUTS1"},
++	{"AIN3L", NULL, "INPUTS2"},
++	{"AIN3R", NULL, "INPUTS2"},
++};
++
++static struct snd_soc_card snd_soc_audioinjector_octo = {
++	.name = "audioinjector-octo-soundcard",
++	.dai_link = audioinjector_octo_dai,
++	.num_links = ARRAY_SIZE(audioinjector_octo_dai),
++
++	.dapm_widgets = audioinjector_octo_widgets,
++	.num_dapm_widgets = ARRAY_SIZE(audioinjector_octo_widgets),
++	.dapm_routes = audioinjector_octo_route,
++	.num_dapm_routes = ARRAY_SIZE(audioinjector_octo_route),
++};
++
++static int audioinjector_octo_probe(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = &snd_soc_audioinjector_octo;
++	int ret;
++
++	card->dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct snd_soc_dai_link *dai = &audioinjector_octo_dai[0];
++		struct device_node *i2s_node =
++					of_parse_phandle(pdev->dev.of_node,
++							"i2s-controller", 0);
++		struct device_node *codec_node =
++					of_parse_phandle(pdev->dev.of_node,
++								"codec", 0);
++
++		mult_gpios = devm_gpiod_get_array_optional(&pdev->dev, "mult",
++								GPIOD_OUT_LOW);
++		if (IS_ERR(mult_gpios))
++			return PTR_ERR(mult_gpios);
++
++		codec_rst_gpio = devm_gpiod_get_optional(&pdev->dev, "reset",
++								GPIOD_OUT_LOW);
++		if (IS_ERR(codec_rst_gpio))
++			return PTR_ERR(codec_rst_gpio);
++
++		non_stop_clocks = of_property_read_bool(pdev->dev.of_node, "non-stop-clocks");
++
++		if (codec_rst_gpio)
++			gpiod_set_value(codec_rst_gpio, 1);
++		msleep(500);
++		if (codec_rst_gpio)
++			gpiod_set_value(codec_rst_gpio, 0);
++		msleep(500);
++		if (codec_rst_gpio)
++			gpiod_set_value(codec_rst_gpio, 1);
++		msleep(500);
++
++		if (i2s_node && codec_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++			dai->codecs->name = NULL;
++			dai->codecs->of_node = codec_node;
++		} else
++			if (!i2s_node) {
++				dev_err(&pdev->dev,
++				"i2s-controller missing or invalid in DT\n");
++				return -EINVAL;
++			} else {
++				dev_err(&pdev->dev,
++				"Property 'codec' missing or invalid\n");
++				return -EINVAL;
++			}
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, card);
++	if (ret != 0)
++		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
++	return ret;
++}
++
++static const struct of_device_id audioinjector_octo_of_match[] = {
++	{ .compatible = "ai,audioinjector-octo-soundcard", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, audioinjector_octo_of_match);
++
++static struct platform_driver audioinjector_octo_driver = {
++	.driver	= {
++		.name			= "audioinjector-octo",
++		.owner			= THIS_MODULE,
++		.of_match_table = audioinjector_octo_of_match,
++	},
++	.probe	= audioinjector_octo_probe,
++};
++
++module_platform_driver(audioinjector_octo_driver);
++MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
++MODULE_DESCRIPTION("AudioInjector.net octo Soundcard");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:audioinjector-octo-soundcard");
+--- /dev/null
++++ b/sound/soc/bcm/audioinjector-pi-soundcard.c
+@@ -0,0 +1,187 @@
++/*
++ * ASoC Driver for AudioInjector Pi add on soundcard
++ *
++ *  Created on: 13-May-2016
++ *      Author: flatmax@flatmax.org
++ *              based on code by  Cliff Cai <Cliff.Cai@analog.com> for the ssm2602 machine blackfin.
++ *              with help from Lars-Peter Clausen for simplifying the original code to use the dai_fmt field.
++ *		i2s_node code taken from the other sound/soc/bcm machine drivers.
++ *
++ * Copyright (C) 2016 Flatmax Pty. Ltd.
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/types.h>
++
++#include <sound/core.h>
++#include <sound/soc.h>
++#include <sound/pcm_params.h>
++#include <sound/control.h>
++
++#include "../codecs/wm8731.h"
++
++static const unsigned int bcm2835_rates_12000000[] = {
++	8000, 16000, 32000, 44100, 48000, 96000, 88200,
++};
++
++static struct snd_pcm_hw_constraint_list bcm2835_constraints_12000000 = {
++	.list = bcm2835_rates_12000000,
++	.count = ARRAY_SIZE(bcm2835_rates_12000000),
++};
++
++static int snd_audioinjector_pi_soundcard_startup(struct snd_pcm_substream *substream)
++{
++	/* Setup constraints, because there is a 12 MHz XTAL on the board */
++	snd_pcm_hw_constraint_list(substream->runtime, 0,
++				SNDRV_PCM_HW_PARAM_RATE,
++				&bcm2835_constraints_12000000);
++	return 0;
++}
++
++static int snd_audioinjector_pi_soundcard_hw_params(struct snd_pcm_substream *substream,
++				       struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++
++	switch (params_rate(params)){
++		case 8000:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 1);
++		case 16000:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 750);
++		case 32000:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 375);
++		case 44100:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 272);
++		case 48000:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 250);
++		case 88200:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 136);
++		case 96000:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 125);
++		default:
++			return snd_soc_dai_set_bclk_ratio(cpu_dai, 125);
++	}
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_audioinjector_pi_soundcard_ops = {
++	.startup = snd_audioinjector_pi_soundcard_startup,
++	.hw_params = snd_audioinjector_pi_soundcard_hw_params,
++};
++
++static int audioinjector_pi_soundcard_dai_init(struct snd_soc_pcm_runtime *rtd)
++{
++	return snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), WM8731_SYSCLK_XTAL, 12000000, SND_SOC_CLOCK_IN);
++}
++
++SND_SOC_DAILINK_DEFS(audioinjector_pi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("wm8731.1-001a", "wm8731-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0")));
++
++static struct snd_soc_dai_link audioinjector_pi_soundcard_dai[] = {
++	{
++		.name = "AudioInjector audio",
++		.stream_name = "AudioInjector audio",
++		.ops = &snd_audioinjector_pi_soundcard_ops,
++		.init = audioinjector_pi_soundcard_dai_init,
++		.dai_fmt = SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|SND_SOC_DAIFMT_NB_NF,
++		SND_SOC_DAILINK_REG(audioinjector_pi),
++	},
++};
++
++static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
++	SND_SOC_DAPM_HP("Headphone Jack", NULL),
++	SND_SOC_DAPM_SPK("Ext Spk", NULL),
++	SND_SOC_DAPM_LINE("Line In Jacks", NULL),
++	SND_SOC_DAPM_MIC("Microphone", NULL),
++};
++
++static const struct snd_soc_dapm_route audioinjector_audio_map[] = {
++	/* headphone connected to LHPOUT, RHPOUT */
++	{"Headphone Jack", NULL, "LHPOUT"},
++	{"Headphone Jack", NULL, "RHPOUT"},
++
++	/* speaker connected to LOUT, ROUT */
++	{"Ext Spk", NULL, "ROUT"},
++	{"Ext Spk", NULL, "LOUT"},
++
++	/* line inputs */
++	{"Line In Jacks", NULL, "Line Input"},
++
++	/* mic is connected to Mic Jack, with WM8731 Mic Bias */
++	{"Microphone", NULL, "Mic Bias"},
++};
++
++static struct snd_soc_card snd_soc_audioinjector = {
++	.name = "audioinjector-pi-soundcard",
++	.dai_link = audioinjector_pi_soundcard_dai,
++	.num_links = ARRAY_SIZE(audioinjector_pi_soundcard_dai),
++
++	.dapm_widgets = wm8731_dapm_widgets,
++	.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
++	.dapm_routes = audioinjector_audio_map,
++	.num_dapm_routes = ARRAY_SIZE(audioinjector_audio_map),
++};
++
++static int audioinjector_pi_soundcard_probe(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = &snd_soc_audioinjector;
++	int ret;
++	
++	card->dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct snd_soc_dai_link *dai = &audioinjector_pi_soundcard_dai[0];
++		struct device_node *i2s_node = of_parse_phandle(pdev->dev.of_node,
++								"i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		} else
++			if (!dai->cpus->of_node) {
++				dev_err(&pdev->dev, "Property 'i2s-controller' missing or invalid\n");
++				return -EINVAL;
++			}
++	}
++
++	if ((ret = devm_snd_soc_register_card(&pdev->dev, card))) {
++		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
++	}
++	return ret;
++}
++
++static const struct of_device_id audioinjector_pi_soundcard_of_match[] = {
++	{ .compatible = "ai,audioinjector-pi-soundcard", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, audioinjector_pi_soundcard_of_match);
++
++static struct platform_driver audioinjector_pi_soundcard_driver = {
++       .driver         = {
++		.name   = "audioinjector-stereo",
++		.owner  = THIS_MODULE,
++		.of_match_table = audioinjector_pi_soundcard_of_match,
++       },
++       .probe          = audioinjector_pi_soundcard_probe,
++};
++
++module_platform_driver(audioinjector_pi_soundcard_driver);
++MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
++MODULE_DESCRIPTION("AudioInjector.net Pi Soundcard");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:audioinjector-pi-soundcard");
++
+--- /dev/null
++++ b/sound/soc/bcm/audiosense-pi.c
+@@ -0,0 +1,248 @@
++/*
++ * ASoC Driver for AudioSense add on soundcard
++ * Author:
++ *	Bhargav A K <anur.bhargav@gmail.com>
++ *	Copyright 2017
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/clk.h>
++#include <linux/i2c.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++#include <sound/control.h>
++
++#include <sound/tlv320aic32x4.h>
++#include "../codecs/tlv320aic32x4.h"
++
++#define AIC32X4_SYSCLK_XTAL	0x00
++
++/*
++ * Setup Codec Sample Rates and Channels
++ * Supported Rates:
++ *	8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, 88200, 96000,
++ */
++static const unsigned int audiosense_pi_rate[] = {
++	48000,
++};
++
++static struct snd_pcm_hw_constraint_list audiosense_constraints_rates = {
++	.list = audiosense_pi_rate,
++	.count = ARRAY_SIZE(audiosense_pi_rate),
++};
++
++static const unsigned int audiosense_pi_channels[] = {
++	2,
++};
++
++static struct snd_pcm_hw_constraint_list audiosense_constraints_ch = {
++	.count = ARRAY_SIZE(audiosense_pi_channels),
++	.list = audiosense_pi_channels,
++	.mask = 0,
++};
++
++/* Setup DAPM widgets and paths */
++static const struct snd_soc_dapm_widget audiosense_pi_dapm_widgets[] = {
++	SND_SOC_DAPM_HP("Headphone Jack", NULL),
++	SND_SOC_DAPM_LINE("Line Out", NULL),
++	SND_SOC_DAPM_LINE("Line In", NULL),
++	SND_SOC_DAPM_INPUT("CM_L"),
++	SND_SOC_DAPM_INPUT("CM_R"),
++};
++
++static const struct snd_soc_dapm_route audiosense_pi_audio_map[] = {
++	/* Line Inputs are connected to
++	 * (IN1_L | IN1_R)
++	 * (IN2_L | IN2_R)
++	 * (IN3_L | IN3_R)
++	 */
++	{"IN1_L", NULL, "Line In"},
++	{"IN1_R", NULL, "Line In"},
++	{"IN2_L", NULL, "Line In"},
++	{"IN2_R", NULL, "Line In"},
++	{"IN3_L", NULL, "Line In"},
++	{"IN3_R", NULL, "Line In"},
++
++	/* Mic is connected to IN2_L and IN2_R */
++	{"Left ADC", NULL, "Mic Bias"},
++	{"Right ADC", NULL, "Mic Bias"},
++
++	/* Headphone connected to HPL, HPR */
++	{"Headphone Jack", NULL, "HPL"},
++	{"Headphone Jack", NULL, "HPR"},
++
++	/* Speakers connected to LOL and LOR */
++	{"Line Out", NULL, "LOL"},
++	{"Line Out", NULL, "LOR"},
++};
++
++static int audiosense_pi_card_init(struct snd_soc_pcm_runtime *rtd)
++{
++	/* TODO: init of the codec specific dapm data, ignore suspend/resume */
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	snd_soc_component_update_bits(component, AIC32X4_MICBIAS, 0x78,
++				      AIC32X4_MICBIAS_LDOIN |
++				      AIC32X4_MICBIAS_2075V);
++	snd_soc_component_update_bits(component, AIC32X4_PWRCFG, 0x08,
++				      AIC32X4_AVDDWEAKDISABLE);
++	snd_soc_component_update_bits(component, AIC32X4_LDOCTL, 0x01,
++				      AIC32X4_LDOCTLEN);
++
++	return 0;
++}
++
++static int audiosense_pi_card_hw_params(
++		struct snd_pcm_substream *substream,
++		struct snd_pcm_hw_params *params)
++{
++	int ret = 0;
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	/* Set the codec system clock, there is a 12 MHz XTAL on the board */
++	ret = snd_soc_dai_set_sysclk(codec_dai, AIC32X4_SYSCLK_XTAL,
++				     12000000, SND_SOC_CLOCK_IN);
++	if (ret) {
++		dev_err(rtd->card->dev,
++			"could not set codec driver clock params\n");
++		return ret;
++	}
++	return 0;
++}
++
++static int audiosense_pi_card_startup(struct snd_pcm_substream *substream)
++{
++	struct snd_pcm_runtime *runtime = substream->runtime;
++
++	/*
++	 * Set codec to 48Khz Sampling, Stereo I/O and 16 bit audio
++	 */
++	runtime->hw.channels_max = 2;
++	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
++				   &audiosense_constraints_ch);
++
++	runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
++	snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
++
++
++	snd_pcm_hw_constraint_list(substream->runtime, 0,
++				   SNDRV_PCM_HW_PARAM_RATE,
++				   &audiosense_constraints_rates);
++	return 0;
++}
++
++static struct snd_soc_ops audiosense_pi_card_ops = {
++	.startup = audiosense_pi_card_startup,
++	.hw_params = audiosense_pi_card_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(audiosense_pi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic32x4.1-0018", "tlv320aic32x4-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link audiosense_pi_card_dai[] = {
++	{
++		.name           = "TLV320AIC3204 Audio",
++		.stream_name    = "TLV320AIC3204 Hifi Audio",
++		.dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++			SND_SOC_DAIFMT_CBM_CFM,
++		.ops            = &audiosense_pi_card_ops,
++		.init           = audiosense_pi_card_init,
++		SND_SOC_DAILINK_REG(audiosense_pi),
++	},
++};
++
++static struct snd_soc_card audiosense_pi_card = {
++	.name		= "audiosense-pi",
++	.driver_name	= "audiosense-pi",
++	.dai_link	= audiosense_pi_card_dai,
++	.owner		= THIS_MODULE,
++	.num_links	= ARRAY_SIZE(audiosense_pi_card_dai),
++	.dapm_widgets	= audiosense_pi_dapm_widgets,
++	.num_dapm_widgets = ARRAY_SIZE(audiosense_pi_dapm_widgets),
++	.dapm_routes	= audiosense_pi_audio_map,
++	.num_dapm_routes = ARRAY_SIZE(audiosense_pi_audio_map),
++};
++
++static int audiosense_pi_card_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	struct snd_soc_card *card = &audiosense_pi_card;
++	struct snd_soc_dai_link *dai = &audiosense_pi_card_dai[0];
++	struct device_node *i2s_node = pdev->dev.of_node;
++
++	card->dev = &pdev->dev;
++
++	if (!dai) {
++		dev_err(&pdev->dev, "DAI not found. Missing or Invalid\n");
++		return -EINVAL;
++	}
++
++	i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
++	if (!i2s_node) {
++		dev_err(&pdev->dev,
++			"Property 'i2s-controller' missing or invalid\n");
++		return -EINVAL;
++	}
++
++	dai->cpus->dai_name = NULL;
++	dai->cpus->of_node = i2s_node;
++	dai->platforms->name = NULL;
++	dai->platforms->of_node = i2s_node;
++
++	of_node_put(i2s_node);
++
++	ret = snd_soc_register_card(card);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static int audiosense_pi_card_remove(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = platform_get_drvdata(pdev);
++
++	return snd_soc_unregister_card(card);
++
++}
++
++static const struct of_device_id audiosense_pi_card_of_match[] = {
++	{ .compatible = "as,audiosense-pi", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, audiosense_pi_card_of_match);
++
++static struct platform_driver audiosense_pi_card_driver = {
++	.driver = {
++		.name = "audiosense-snd-card",
++		.owner = THIS_MODULE,
++		.of_match_table = audiosense_pi_card_of_match,
++	},
++	.probe = audiosense_pi_card_probe,
++	.remove = audiosense_pi_card_remove,
++};
++
++module_platform_driver(audiosense_pi_card_driver);
++
++MODULE_AUTHOR("Bhargav AK <anur.bhargav@gmail.com>");
++MODULE_DESCRIPTION("ASoC Driver for TLV320AIC3204 Audio");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:audiosense-pi");
++
+--- /dev/null
++++ b/sound/soc/bcm/digidac1-soundcard.c
+@@ -0,0 +1,421 @@
++/*
++ * ASoC Driver for RRA DigiDAC1
++ * Copyright 2016
++ * Author: José M. Tasende <vintage@redrocksaudio.es>
++ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
++ * and the Wolfson card driver by Nikesh Oswal, <Nikesh.Oswal@wolfsonmicro.com>
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/i2c.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++#include <sound/soc-dapm.h>
++#include <sound/tlv.h>
++#include <linux/regulator/consumer.h>
++
++#include "../codecs/wm8804.h"
++#include "../codecs/wm8741.h"
++
++#define WM8741_NUM_SUPPLIES 2
++
++/* codec private data */
++struct wm8741_priv {
++	struct wm8741_platform_data pdata;
++	struct regmap *regmap;
++	struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES];
++	unsigned int sysclk;
++	const struct snd_pcm_hw_constraint_list *sysclk_constraints;
++};
++
++static int samplerate = 44100;
++
++/* New Alsa Controls not exposed by original wm8741 codec driver	*/
++/* in actual driver the att. adjustment is wrong because		*/
++/* this DAC has a coarse attenuation register with 4dB steps		*/
++/* and a fine level register with 0.125dB steps				*/
++/* each register has 32 steps so combining both we have	1024 steps	*/
++/* of 0.125 dB.								*/
++/* The original level controls from driver are removed at startup	*/
++/* and replaced by the corrected ones.					*/
++/* The same wm8741 driver can be used for wm8741 and wm8742 devices	*/
++
++static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, 0, 13, 0);
++static const DECLARE_TLV_DB_SCALE(dac_tlv_coarse, -12700, 400, 1);
++static const char *w8741_dither[4] = {"Off", "RPDF", "TPDF", "HPDF"};
++static const char *w8741_filter[5] = {
++		"Type 1", "Type 2", "Type 3", "Type 4", "Type 5"};
++static const char *w8741_switch[2] = {"Off", "On"};
++static const struct soc_enum w8741_enum[] = {
++SOC_ENUM_SINGLE(WM8741_MODE_CONTROL_2, 0, 4, w8741_dither),/* dithering type */
++SOC_ENUM_SINGLE(WM8741_FILTER_CONTROL, 0, 5, w8741_filter),/* filter type */
++SOC_ENUM_SINGLE(WM8741_FORMAT_CONTROL, 6, 2, w8741_switch),/* phase invert */
++SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 0, 2, w8741_switch),/* volume ramp */
++SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 3, 2, w8741_switch),/* soft mute */
++};
++
++static const struct snd_kcontrol_new w8741_snd_controls_stereo[] = {
++SOC_DOUBLE_R_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
++		WM8741_DACRLSB_ATTENUATION, 0, 31, 1, dac_tlv_fine),
++SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION,
++		WM8741_DACRMSB_ATTENUATION, 0, 31, 1, dac_tlv_coarse),
++SOC_ENUM("DAC Dither", w8741_enum[0]),
++SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
++SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
++SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
++SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
++};
++
++static const struct snd_kcontrol_new w8741_snd_controls_mono_left[] = {
++SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
++		0, 31, 0, dac_tlv_fine),
++SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION,
++		0, 31, 1, dac_tlv_coarse),
++SOC_ENUM("DAC Dither", w8741_enum[0]),
++SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
++SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
++SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
++SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
++};
++
++static const struct snd_kcontrol_new w8741_snd_controls_mono_right[] = {
++SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACRLSB_ATTENUATION,
++	0, 31, 0, dac_tlv_fine),
++SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACRMSB_ATTENUATION,
++	0, 31, 1, dac_tlv_coarse),
++SOC_ENUM("DAC Dither", w8741_enum[0]),
++SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
++SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
++SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
++SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
++};
++
++static int w8741_add_controls(struct snd_soc_component *component)
++{
++	struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
++
++	switch (wm8741->pdata.diff_mode) {
++	case WM8741_DIFF_MODE_STEREO:
++	case WM8741_DIFF_MODE_STEREO_REVERSED:
++		snd_soc_add_component_controls(component,
++				w8741_snd_controls_stereo,
++				ARRAY_SIZE(w8741_snd_controls_stereo));
++		break;
++	case WM8741_DIFF_MODE_MONO_LEFT:
++		snd_soc_add_component_controls(component,
++				w8741_snd_controls_mono_left,
++				ARRAY_SIZE(w8741_snd_controls_mono_left));
++		break;
++	case WM8741_DIFF_MODE_MONO_RIGHT:
++		snd_soc_add_component_controls(component,
++				w8741_snd_controls_mono_right,
++				ARRAY_SIZE(w8741_snd_controls_mono_right));
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int digidac1_soundcard_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_card *card = rtd->card;
++	struct snd_soc_pcm_runtime *wm8741_rtd;
++	struct snd_soc_component *wm8741_component;
++	struct snd_card *sound_card = card->snd_card;
++	struct snd_kcontrol *kctl;
++	int ret;
++
++	wm8741_rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
++	if (!wm8741_rtd) {
++		dev_warn(card->dev, "digidac1_soundcard_init: couldn't get wm8741 rtd\n");
++		return -EFAULT;
++	}
++	wm8741_component = asoc_rtd_to_codec(wm8741_rtd, 0)->component;
++	ret = w8741_add_controls(wm8741_component);
++	if (ret < 0)
++		dev_warn(card->dev, "Failed to add new wm8741 controls: %d\n",
++		ret);
++
++	/* enable TX output */
++	snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, 0x0);
++
++	kctl = snd_soc_card_get_kcontrol(card,
++		"Playback Volume");
++	if (kctl) {
++		kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
++		snd_ctl_remove(sound_card, kctl);
++		}
++	kctl = snd_soc_card_get_kcontrol(card,
++		"Fine Playback Volume");
++	if (kctl) {
++		kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
++		snd_ctl_remove(sound_card, kctl);
++		}
++	return 0;
++}
++
++static int digidac1_soundcard_startup(struct snd_pcm_substream *substream)
++{
++	/* turn on wm8804 digital output */
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_card *card = rtd->card;
++	struct snd_soc_pcm_runtime *wm8741_rtd;
++	struct snd_soc_component *wm8741_component;
++
++	snd_soc_component_update_bits(component, WM8804_PWRDN, 0x3c, 0x00);
++	wm8741_rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
++	if (!wm8741_rtd) {
++		dev_warn(card->dev, "digidac1_soundcard_startup: couldn't get WM8741 rtd\n");
++		return -EFAULT;
++	}
++	wm8741_component = asoc_rtd_to_codec(wm8741_rtd, 0)->component;
++
++	/* latch wm8741 level */
++	snd_soc_component_update_bits(wm8741_component, WM8741_DACLLSB_ATTENUATION,
++		WM8741_UPDATELL, WM8741_UPDATELL);
++	snd_soc_component_update_bits(wm8741_component, WM8741_DACLMSB_ATTENUATION,
++		WM8741_UPDATELM, WM8741_UPDATELM);
++	snd_soc_component_update_bits(wm8741_component, WM8741_DACRLSB_ATTENUATION,
++		WM8741_UPDATERL, WM8741_UPDATERL);
++	snd_soc_component_update_bits(wm8741_component, WM8741_DACRMSB_ATTENUATION,
++		WM8741_UPDATERM, WM8741_UPDATERM);
++
++	return 0;
++}
++
++static void digidac1_soundcard_shutdown(struct snd_pcm_substream *substream)
++{
++	/* turn off wm8804 digital output */
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	snd_soc_component_update_bits(component, WM8804_PWRDN, 0x3c, 0x3c);
++}
++
++static int digidac1_soundcard_hw_params(struct snd_pcm_substream *substream,
++				       struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++	struct snd_soc_card *card = rtd->card;
++	struct snd_soc_pcm_runtime *wm8741_rtd;
++	struct snd_soc_component *wm8741_component;
++
++	int sysclk = 27000000;
++	long mclk_freq = 0;
++	int mclk_div = 1;
++	int sampling_freq = 1;
++	int ret;
++
++	wm8741_rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
++	if (!wm8741_rtd) {
++		dev_warn(card->dev, "digidac1_soundcard_hw_params: couldn't get WM8741 rtd\n");
++		return -EFAULT;
++	}
++	wm8741_component = asoc_rtd_to_codec(wm8741_rtd, 0)->component;
++	samplerate = params_rate(params);
++
++	if (samplerate <= 96000) {
++		mclk_freq = samplerate*256;
++		mclk_div = WM8804_MCLKDIV_256FS;
++	} else {
++		mclk_freq = samplerate*128;
++		mclk_div = WM8804_MCLKDIV_128FS;
++		}
++
++	switch (samplerate) {
++	case 32000:
++		sampling_freq = 0x03;
++		break;
++	case 44100:
++		sampling_freq = 0x00;
++		break;
++	case 48000:
++		sampling_freq = 0x02;
++		break;
++	case 88200:
++		sampling_freq = 0x08;
++		break;
++	case 96000:
++		sampling_freq = 0x0a;
++		break;
++	case 176400:
++		sampling_freq = 0x0c;
++		break;
++	case 192000:
++		sampling_freq = 0x0e;
++		break;
++	default:
++		dev_err(card->dev,
++		"Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
++		samplerate);
++	}
++
++	snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
++	snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
++
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
++		sysclk, SND_SOC_CLOCK_OUT);
++	if (ret < 0) {
++		dev_err(card->dev,
++		"Failed to set WM8804 SYSCLK: %d\n", ret);
++		return ret;
++	}
++	/* Enable wm8804 TX output */
++	snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, 0x0);
++
++	/* wm8804 Power on */
++	snd_soc_component_update_bits(component, WM8804_PWRDN, 0x9, 0);
++
++	/* wm8804 set sampling frequency status bits */
++	snd_soc_component_update_bits(component, WM8804_SPDTX4, 0x0f, sampling_freq);
++
++	/* Now update wm8741 registers for the correct oversampling */
++	if (samplerate <= 48000)
++		snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1,
++		 WM8741_OSR_MASK, 0x00);
++	else if (samplerate <= 96000)
++		snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1,
++		 WM8741_OSR_MASK, 0x20);
++	else
++		snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1,
++		 WM8741_OSR_MASK, 0x40);
++
++	/* wm8741 bit size */
++	switch (params_width(params)) {
++	case 16:
++		snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
++		 WM8741_IWL_MASK, 0x00);
++		break;
++	case 20:
++		snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
++		 WM8741_IWL_MASK, 0x01);
++		break;
++	case 24:
++		snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
++		 WM8741_IWL_MASK, 0x02);
++		break;
++	case 32:
++		snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL,
++		 WM8741_IWL_MASK, 0x03);
++		break;
++	default:
++		dev_dbg(card->dev, "wm8741_hw_params:    Unsupported bit size param = %d",
++			params_width(params));
++		return -EINVAL;
++	}
++
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
++}
++/* machine stream operations */
++static struct snd_soc_ops digidac1_soundcard_ops = {
++	.hw_params	= digidac1_soundcard_hw_params,
++	.startup	= digidac1_soundcard_startup,
++	.shutdown	= digidac1_soundcard_shutdown,
++};
++
++SND_SOC_DAILINK_DEFS(digidac1,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("wm8804.1-003b", "wm8804-spdif")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0")));
++
++SND_SOC_DAILINK_DEFS(digidac11,
++	DAILINK_COMP_ARRAY(COMP_CPU("wm8804-spdif")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("wm8741.1-001a", "wm8741")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link digidac1_soundcard_dai[] = {
++	{
++	.name		= "RRA DigiDAC1",
++	.stream_name	= "RRA DigiDAC1 HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBM_CFM,
++	.ops		= &digidac1_soundcard_ops,
++	.init		= digidac1_soundcard_init,
++	SND_SOC_DAILINK_REG(digidac1),
++	},
++	{
++	.name		= "RRA DigiDAC11",
++	.stream_name	= "RRA DigiDAC11 HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S
++			| SND_SOC_DAIFMT_NB_NF
++			| SND_SOC_DAIFMT_CBS_CFS,
++	SND_SOC_DAILINK_REG(digidac11),
++	},
++};
++
++/* audio machine driver */
++static struct snd_soc_card digidac1_soundcard = {
++	.name		= "digidac1-soundcard",
++	.owner		= THIS_MODULE,
++	.dai_link	= digidac1_soundcard_dai,
++	.num_links	= ARRAY_SIZE(digidac1_soundcard_dai),
++};
++
++static int digidac1_soundcard_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	digidac1_soundcard.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai = &digidac1_soundcard_dai[0];
++
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					"i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &digidac1_soundcard);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
++			ret);
++
++	return ret;
++}
++
++static const struct of_device_id digidac1_soundcard_of_match[] = {
++	{ .compatible = "rra,digidac1-soundcard", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, digidac1_soundcard_of_match);
++
++static struct platform_driver digidac1_soundcard_driver = {
++	.driver = {
++			.name		= "digidac1-audio",
++			.owner		= THIS_MODULE,
++			.of_match_table	= digidac1_soundcard_of_match,
++	},
++	.probe		= digidac1_soundcard_probe,
++};
++
++module_platform_driver(digidac1_soundcard_driver);
++
++MODULE_AUTHOR("José M. Tasende <vintage@redrocksaudio.es>");
++MODULE_DESCRIPTION("ASoC Driver for RRA DigiDAC1");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/dionaudio_loco-v2.c
+@@ -0,0 +1,117 @@
++/*
++ * ASoC Driver for Dion Audio LOCO-V2 DAC-AMP
++ *
++ * Author:      Miquel Blauw <info@dionaudio.nl>
++ *              Copyright 2017
++ *
++ * Based on the software of the RPi-DAC writen by Florian Meier
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++static bool digital_gain_0db_limit = true;
++
++static int snd_rpi_dionaudio_loco_v2_init(struct snd_soc_pcm_runtime *rtd)
++{
++	if (digital_gain_0db_limit) {
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++	}
++
++	return 0;
++}
++
++SND_SOC_DAILINK_DEFS(dionaudio_loco_v2,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_dionaudio_loco_v2_dai[] = {
++{
++	.name		= "DionAudio LOCO-V2",
++	.stream_name	= "DionAudio LOCO-V2 DAC-AMP",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++			  SND_SOC_DAIFMT_CBS_CFS,
++	.init		= snd_rpi_dionaudio_loco_v2_init,
++	SND_SOC_DAILINK_REG(dionaudio_loco_v2),
++},};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_dionaudio_loco_v2 = {
++	.name         = "Dion Audio LOCO-V2",
++	.dai_link     = snd_rpi_dionaudio_loco_v2_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_dionaudio_loco_v2_dai),
++};
++
++static int snd_rpi_dionaudio_loco_v2_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_rpi_dionaudio_loco_v2.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai =
++					&snd_rpi_dionaudio_loco_v2_dai[0];
++
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					    "i2s-controller", 0);
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++
++		digital_gain_0db_limit = !of_property_read_bool(
++			pdev->dev.of_node, "dionaudio,24db_digital_gain");
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_dionaudio_loco_v2);
++	if (ret)
++		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
++			ret);
++
++	return ret;
++}
++
++static const struct of_device_id dionaudio_of_match[] = {
++	{ .compatible = "dionaudio,dionaudio-loco-v2", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, dionaudio_of_match);
++
++static struct platform_driver snd_rpi_dionaudio_loco_v2_driver = {
++	.driver = {
++		.name   = "snd-rpi-dionaudio-loco-v2",
++		.owner  = THIS_MODULE,
++		.of_match_table = dionaudio_of_match,
++	},
++	.probe          = snd_rpi_dionaudio_loco_v2_probe,
++};
++
++module_platform_driver(snd_rpi_dionaudio_loco_v2_driver);
++
++MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
++MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO-V2");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/dionaudio_loco.c
+@@ -0,0 +1,117 @@
++/*
++ * ASoC Driver for Dion Audio LOCO DAC-AMP
++ *
++ * Author:      Miquel Blauw <info@dionaudio.nl>
++ *              Copyright 2016
++ *
++ * Based on the software of the RPi-DAC writen by Florian Meier
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++static int snd_rpi_dionaudio_loco_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++
++	unsigned int sample_bits =
++		snd_pcm_format_physical_width(params_format(params));
++
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = {
++	.hw_params = snd_rpi_dionaudio_loco_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(dionaudio_loco,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm5102a-codec", "pcm5102a-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = {
++{
++	.name		= "DionAudio LOCO",
++	.stream_name	= "DionAudio LOCO DAC-AMP",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S |
++			  SND_SOC_DAIFMT_NB_NF |
++			  SND_SOC_DAIFMT_CBS_CFS,
++	.ops		= &snd_rpi_dionaudio_loco_ops,
++	SND_SOC_DAILINK_REG(dionaudio_loco),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_dionaudio_loco = {
++	.name		= "snd_rpi_dionaudio_loco",
++	.dai_link	= snd_rpi_dionaudio_loco_dai,
++	.num_links	= ARRAY_SIZE(snd_rpi_dionaudio_loco_dai),
++};
++
++static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev)
++{
++	struct device_node *np;
++	int ret = 0;
++
++	snd_rpi_dionaudio_loco.dev = &pdev->dev;
++
++	np = pdev->dev.of_node;
++	if (np) {
++		struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0];
++		struct device_node *i2s_np;
++
++		i2s_np = of_parse_phandle(np, "i2s-controller", 0);
++		if (i2s_np) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_np;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_np;
++		}
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_dionaudio_loco);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
++			ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = {
++	{ .compatible = "dionaudio,loco-pcm5242-tpa3118", },
++	{ /* sentinel */ },
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match);
++
++static struct platform_driver snd_rpi_dionaudio_loco_driver = {
++	.driver = {
++		.name		= "snd-dionaudio-loco",
++		.owner		= THIS_MODULE,
++		.of_match_table	= snd_rpi_dionaudio_loco_of_match,
++	},
++	.probe  = snd_rpi_dionaudio_loco_probe,
++};
++
++module_platform_driver(snd_rpi_dionaudio_loco_driver);
++
++MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
++MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/fe-pi-audio.c
+@@ -0,0 +1,154 @@
++/*
++ * ASoC Driver for Fe-Pi Audio Sound Card
++ *
++ * Author:	Henry Kupis <kuupaz@gmail.com>
++ *		Copyright 2016
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *		based on code by Shawn Guo <shawn.guo@linaro.org>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/io.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include "../codecs/sgtl5000.h"
++
++static int snd_fe_pi_audio_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_card *card = rtd->card;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	snd_soc_dapm_force_enable_pin(&card->dapm, "LO");
++	snd_soc_dapm_force_enable_pin(&card->dapm, "ADC");
++	snd_soc_dapm_force_enable_pin(&card->dapm, "DAC");
++	snd_soc_dapm_force_enable_pin(&card->dapm, "HP");
++	snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
++			SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
++
++	return 0;
++}
++
++static int snd_fe_pi_audio_hw_params(struct snd_pcm_substream *substream,
++	struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct device *dev = rtd->card->dev;
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	int ret;
++
++	/* Set SGTL5000's SYSCLK */
++	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, 12288000, SND_SOC_CLOCK_IN);
++	if (ret) {
++		dev_err(dev, "could not set codec driver clock params\n");
++		return ret;
++	}
++
++	return 0;
++}
++
++
++static struct snd_soc_ops snd_fe_pi_audio_ops = {
++	.hw_params = snd_fe_pi_audio_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(fe_pi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("sgtl5000.1-000a", "sgtl5000")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_fe_pi_audio_dai[] = {
++	{
++		.name		= "FE-PI",
++		.stream_name	= "Fe-Pi HiFi",
++		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++					SND_SOC_DAIFMT_CBM_CFM,
++		.ops		= &snd_fe_pi_audio_ops,
++		.init		= snd_fe_pi_audio_init,
++		SND_SOC_DAILINK_REG(fe_pi),
++	},
++};
++
++static const struct snd_soc_dapm_route fe_pi_audio_dapm_routes[] = {
++	{"ADC", NULL, "Mic Bias"},
++};
++
++
++static struct snd_soc_card fe_pi_audio = {
++	.name         = "Fe-Pi Audio",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_fe_pi_audio_dai,
++	.num_links    = ARRAY_SIZE(snd_fe_pi_audio_dai),
++
++	.dapm_routes = fe_pi_audio_dapm_routes,
++	.num_dapm_routes = ARRAY_SIZE(fe_pi_audio_dapm_routes),
++};
++
++static int snd_fe_pi_audio_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	struct snd_soc_card *card = &fe_pi_audio;
++	struct device_node *np = pdev->dev.of_node;
++	struct device_node *i2s_node;
++	struct snd_soc_dai_link *dai = &snd_fe_pi_audio_dai[0];
++
++	fe_pi_audio.dev = &pdev->dev;
++
++	i2s_node = of_parse_phandle(np, "i2s-controller", 0);
++	if (!i2s_node) {
++		dev_err(&pdev->dev, "i2s_node phandle missing or invalid\n");
++		return -EINVAL;
++	}
++
++	dai->cpus->dai_name = NULL;
++	dai->cpus->of_node = i2s_node;
++	dai->platforms->name = NULL;
++	dai->platforms->of_node = i2s_node;
++
++	of_node_put(i2s_node);
++
++	card->dev = &pdev->dev;
++	platform_set_drvdata(pdev, card);
++
++	ret = devm_snd_soc_register_card(&pdev->dev, card);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_fe_pi_audio_of_match[] = {
++	{ .compatible = "fe-pi,fe-pi-audio", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_fe_pi_audio_of_match);
++
++static struct platform_driver snd_fe_pi_audio_driver = {
++        .driver = {
++                .name   = "snd-fe-pi-audio",
++                .owner  = THIS_MODULE,
++                .of_match_table = snd_fe_pi_audio_of_match,
++        },
++        .probe          = snd_fe_pi_audio_probe,
++};
++
++module_platform_driver(snd_fe_pi_audio_driver);
++
++MODULE_AUTHOR("Henry Kupis <fe-pi@cox.net>");
++MODULE_DESCRIPTION("ASoC Driver for Fe-Pi Audio");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/googlevoicehat-codec.c
+@@ -0,0 +1,214 @@
++/*
++ * Driver for the Google voiceHAT audio codec for Raspberry Pi.
++ *
++ * Author:	Peter Malkin <petermalkin@google.com>
++ *		Copyright 2016
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/device.h>
++#include <linux/err.h>
++#include <linux/gpio.h>
++#include <linux/gpio/consumer.h>
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/mod_devicetable.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/version.h>
++#include <sound/pcm.h>
++#include <sound/soc.h>
++#include <sound/soc-dai.h>
++#include <sound/soc-dapm.h>
++
++#define ICS43432_RATE_MIN_HZ	7190  /* from data sheet */
++#define ICS43432_RATE_MAX_HZ	52800 /* from data sheet */
++/* Delay in enabling SDMODE after clock settles to remove pop */
++#define SDMODE_DELAY_MS		5
++
++struct voicehat_priv {
++	struct delayed_work enable_sdmode_work;
++	struct gpio_desc *sdmode_gpio;
++	unsigned long sdmode_delay_jiffies;
++};
++
++static void voicehat_enable_sdmode_work(struct work_struct *work)
++{
++	struct voicehat_priv *voicehat = container_of(work,
++						      struct voicehat_priv,
++						      enable_sdmode_work.work);
++	gpiod_set_value(voicehat->sdmode_gpio, 1);
++}
++
++static int voicehat_component_probe(struct snd_soc_component *component)
++{
++	struct voicehat_priv *voicehat =
++				snd_soc_component_get_drvdata(component);
++
++	voicehat->sdmode_gpio = devm_gpiod_get(component->dev, "sdmode",
++					       GPIOD_OUT_LOW);
++	if (IS_ERR(voicehat->sdmode_gpio)) {
++		dev_err(component->dev, "Unable to allocate GPIO pin\n");
++		return PTR_ERR(voicehat->sdmode_gpio);
++	}
++
++	INIT_DELAYED_WORK(&voicehat->enable_sdmode_work,
++			  voicehat_enable_sdmode_work);
++	return 0;
++}
++
++static void voicehat_component_remove(struct snd_soc_component *component)
++{
++	struct voicehat_priv *voicehat =
++				snd_soc_component_get_drvdata(component);
++
++	cancel_delayed_work_sync(&voicehat->enable_sdmode_work);
++}
++
++static const struct snd_soc_dapm_widget voicehat_dapm_widgets[] = {
++	SND_SOC_DAPM_OUTPUT("Speaker"),
++};
++
++static const struct snd_soc_dapm_route voicehat_dapm_routes[] = {
++	{"Speaker", NULL, "HiFi Playback"},
++};
++
++static const struct snd_soc_component_driver voicehat_component_driver = {
++	.probe = voicehat_component_probe,
++	.remove = voicehat_component_remove,
++	.dapm_widgets = voicehat_dapm_widgets,
++	.num_dapm_widgets = ARRAY_SIZE(voicehat_dapm_widgets),
++	.dapm_routes = voicehat_dapm_routes,
++	.num_dapm_routes = ARRAY_SIZE(voicehat_dapm_routes),
++};
++
++static int voicehat_daiops_trigger(struct snd_pcm_substream *substream, int cmd,
++				   struct snd_soc_dai *dai)
++{
++	struct snd_soc_component *component = dai->component;
++	struct voicehat_priv *voicehat =
++				snd_soc_component_get_drvdata(component);
++
++	if (voicehat->sdmode_delay_jiffies == 0)
++		return 0;
++
++	dev_dbg(dai->dev, "CMD             %d", cmd);
++	dev_dbg(dai->dev, "Playback Active %d", dai->stream_active[SNDRV_PCM_STREAM_PLAYBACK]);
++	dev_dbg(dai->dev, "Capture Active  %d", dai->stream_active[SNDRV_PCM_STREAM_CAPTURE]);
++
++	switch (cmd) {
++	case SNDRV_PCM_TRIGGER_START:
++	case SNDRV_PCM_TRIGGER_RESUME:
++	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++		if (dai->stream_active[SNDRV_PCM_STREAM_PLAYBACK]) {
++			dev_info(dai->dev, "Enabling audio amp...\n");
++			queue_delayed_work(
++				system_power_efficient_wq,
++				&voicehat->enable_sdmode_work,
++				voicehat->sdmode_delay_jiffies);
++		}
++		break;
++	case SNDRV_PCM_TRIGGER_STOP:
++	case SNDRV_PCM_TRIGGER_SUSPEND:
++	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++		if (dai->stream_active[SNDRV_PCM_STREAM_PLAYBACK]) {
++			cancel_delayed_work(&voicehat->enable_sdmode_work);
++			dev_info(dai->dev, "Disabling audio amp...\n");
++			gpiod_set_value(voicehat->sdmode_gpio, 0);
++		}
++		break;
++	}
++	return 0;
++}
++
++static const struct snd_soc_dai_ops voicehat_dai_ops = {
++	.trigger = voicehat_daiops_trigger,
++};
++
++static struct snd_soc_dai_driver voicehat_dai = {
++	.name = "voicehat-hifi",
++	.capture = {
++		.stream_name = "HiFi Capture",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_48000,
++		.formats = SNDRV_PCM_FMTBIT_S32_LE
++	},
++	.playback = {
++		.stream_name = "HiFi Playback",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_48000,
++		.formats = SNDRV_PCM_FMTBIT_S32_LE
++	},
++	.ops = &voicehat_dai_ops,
++	.symmetric_rate = 1
++};
++
++#ifdef CONFIG_OF
++static const struct of_device_id voicehat_ids[] = {
++		{ .compatible = "google,voicehat", }, {}
++	};
++	MODULE_DEVICE_TABLE(of, voicehat_ids);
++#endif
++
++static int voicehat_platform_probe(struct platform_device *pdev)
++{
++	struct voicehat_priv *voicehat;
++	unsigned int sdmode_delay;
++	int ret;
++
++	voicehat = devm_kzalloc(&pdev->dev, sizeof(*voicehat), GFP_KERNEL);
++	if (!voicehat)
++		return -ENOMEM;
++
++	ret = device_property_read_u32(&pdev->dev, "voicehat_sdmode_delay",
++				       &sdmode_delay);
++
++	if (ret) {
++		sdmode_delay = SDMODE_DELAY_MS;
++		dev_info(&pdev->dev,
++			 "property 'voicehat_sdmode_delay' not found default 5 mS");
++	} else {
++		dev_info(&pdev->dev, "property 'voicehat_sdmode_delay' found delay= %d mS",
++			 sdmode_delay);
++	}
++	voicehat->sdmode_delay_jiffies = msecs_to_jiffies(sdmode_delay);
++
++	dev_set_drvdata(&pdev->dev, voicehat);
++
++	return snd_soc_register_component(&pdev->dev,
++					  &voicehat_component_driver,
++					  &voicehat_dai,
++					  1);
++}
++
++static int voicehat_platform_remove(struct platform_device *pdev)
++{
++	snd_soc_unregister_component(&pdev->dev);
++	return 0;
++}
++
++static struct platform_driver voicehat_driver = {
++	.driver = {
++		.name = "voicehat-codec",
++		.of_match_table = of_match_ptr(voicehat_ids),
++	},
++	.probe = voicehat_platform_probe,
++	.remove = voicehat_platform_remove,
++};
++
++module_platform_driver(voicehat_driver);
++
++MODULE_DESCRIPTION("Google voiceHAT Codec driver");
++MODULE_AUTHOR("Peter Malkin <petermalkin@google.com>");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/hifiberry_dacplus.c
+@@ -0,0 +1,527 @@
++/*
++ * ASoC Driver for HiFiBerry DAC+ / DAC Pro / AMP100
++ *
++ * Author:	Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
++ *		Copyright 2014-2015
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *		Headphone/AMP100 Joerg Schambacher <joerg@hifiberry.com>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/gpio/consumer.h>
++#include <../drivers/gpio/gpiolib.h>
++#include <linux/platform_device.h>
++#include <linux/kernel.h>
++#include <linux/clk.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/slab.h>
++#include <linux/delay.h>
++#include <linux/i2c.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include "../codecs/pcm512x.h"
++
++#define HIFIBERRY_DACPRO_NOCLOCK 0
++#define HIFIBERRY_DACPRO_CLK44EN 1
++#define HIFIBERRY_DACPRO_CLK48EN 2
++
++struct pcm512x_priv {
++	struct regmap *regmap;
++	struct clk *sclk;
++};
++
++/* Clock rate of CLK44EN attached to GPIO6 pin */
++#define CLK_44EN_RATE 22579200UL
++/* Clock rate of CLK48EN attached to GPIO3 pin */
++#define CLK_48EN_RATE 24576000UL
++
++static bool slave;
++static bool snd_rpi_hifiberry_is_dacpro;
++static bool digital_gain_0db_limit = true;
++static bool leds_off;
++static bool auto_mute;
++static int mute_ext_ctl;
++static int mute_ext;
++static struct gpio_desc *snd_mute_gpio;
++static struct gpio_desc *snd_reset_gpio;
++static struct snd_soc_card snd_rpi_hifiberry_dacplus;
++
++static int snd_rpi_hifiberry_dacplus_mute_set(int mute)
++{
++	gpiod_set_value_cansleep(snd_mute_gpio, mute);
++	return 1;
++}
++
++static int snd_rpi_hifiberry_dacplus_mute_get(struct snd_kcontrol *kcontrol,
++				struct snd_ctl_elem_value *ucontrol)
++{
++	ucontrol->value.integer.value[0] = mute_ext;
++
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplus_mute_put(struct snd_kcontrol *kcontrol,
++				struct snd_ctl_elem_value *ucontrol)
++{
++	if (mute_ext == ucontrol->value.integer.value[0])
++		return 0;
++
++	mute_ext = ucontrol->value.integer.value[0];
++
++	return snd_rpi_hifiberry_dacplus_mute_set(mute_ext);
++}
++
++static const char * const mute_text[] = {"Play", "Mute"};
++static const struct soc_enum hb_dacplus_opt_mute_enum =
++	SOC_ENUM_SINGLE_EXT(2, mute_text);
++
++static const struct snd_kcontrol_new hb_dacplus_opt_mute_controls[] = {
++	SOC_ENUM_EXT("Mute(ext)", hb_dacplus_opt_mute_enum,
++			      snd_rpi_hifiberry_dacplus_mute_get,
++			      snd_rpi_hifiberry_dacplus_mute_put),
++};
++
++static void snd_rpi_hifiberry_dacplus_select_clk(struct snd_soc_component *component,
++	int clk_id)
++{
++	switch (clk_id) {
++	case HIFIBERRY_DACPRO_NOCLOCK:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
++		break;
++	case HIFIBERRY_DACPRO_CLK44EN:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
++		break;
++	case HIFIBERRY_DACPRO_CLK48EN:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
++		break;
++	}
++	usleep_range(3000, 4000);
++}
++
++static void snd_rpi_hifiberry_dacplus_clk_gpio(struct snd_soc_component *component)
++{
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
++}
++
++static bool snd_rpi_hifiberry_dacplus_is_sclk(struct snd_soc_component *component)
++{
++	unsigned int sck;
++
++	sck = snd_soc_component_read(component, PCM512x_RATE_DET_4);
++	return (!(sck & 0x40));
++}
++
++static bool snd_rpi_hifiberry_dacplus_is_pro_card(struct snd_soc_component *component)
++{
++	bool isClk44EN, isClk48En, isNoClk;
++
++	snd_rpi_hifiberry_dacplus_clk_gpio(component);
++
++	snd_rpi_hifiberry_dacplus_select_clk(component, HIFIBERRY_DACPRO_CLK44EN);
++	isClk44EN = snd_rpi_hifiberry_dacplus_is_sclk(component);
++
++	snd_rpi_hifiberry_dacplus_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK);
++	isNoClk = snd_rpi_hifiberry_dacplus_is_sclk(component);
++
++	snd_rpi_hifiberry_dacplus_select_clk(component, HIFIBERRY_DACPRO_CLK48EN);
++	isClk48En = snd_rpi_hifiberry_dacplus_is_sclk(component);
++
++	return (isClk44EN && isClk48En && !isNoClk);
++}
++
++static int snd_rpi_hifiberry_dacplus_clk_for_rate(int sample_rate)
++{
++	int type;
++
++	switch (sample_rate) {
++	case 11025:
++	case 22050:
++	case 44100:
++	case 88200:
++	case 176400:
++	case 352800:
++		type = HIFIBERRY_DACPRO_CLK44EN;
++		break;
++	default:
++		type = HIFIBERRY_DACPRO_CLK48EN;
++		break;
++	}
++	return type;
++}
++
++static void snd_rpi_hifiberry_dacplus_set_sclk(struct snd_soc_component *component,
++	int sample_rate)
++{
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++
++	if (!IS_ERR(pcm512x->sclk)) {
++		int ctype;
++
++		ctype = snd_rpi_hifiberry_dacplus_clk_for_rate(sample_rate);
++		clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN)
++			? CLK_44EN_RATE : CLK_48EN_RATE);
++		snd_rpi_hifiberry_dacplus_select_clk(component, ctype);
++	}
++}
++
++static int snd_rpi_hifiberry_dacplus_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct pcm512x_priv *priv;
++	struct snd_soc_card *card = &snd_rpi_hifiberry_dacplus;
++
++	if (slave)
++		snd_rpi_hifiberry_is_dacpro = false;
++	else
++		snd_rpi_hifiberry_is_dacpro =
++				snd_rpi_hifiberry_dacplus_is_pro_card(component);
++
++	if (snd_rpi_hifiberry_is_dacpro) {
++		struct snd_soc_dai_link *dai = rtd->dai_link;
++
++		dai->name = "HiFiBerry DAC+ Pro";
++		dai->stream_name = "HiFiBerry DAC+ Pro HiFi";
++		dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++			| SND_SOC_DAIFMT_CBM_CFM;
++
++		snd_soc_component_update_bits(component, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
++		snd_soc_component_update_bits(component, PCM512x_MASTER_MODE, 0x03, 0x03);
++		snd_soc_component_update_bits(component, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
++	} else {
++		priv = snd_soc_component_get_drvdata(component);
++		priv->sclk = ERR_PTR(-ENOENT);
++	}
++
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
++	if (leds_off)
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++	else
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++
++	if (digital_gain_0db_limit) {
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++	}
++	if (snd_reset_gpio) {
++		gpiod_set_value_cansleep(snd_reset_gpio, 0);
++		msleep(1);
++		gpiod_set_value_cansleep(snd_reset_gpio, 1);
++		msleep(1);
++		gpiod_set_value_cansleep(snd_reset_gpio, 0);
++	}
++
++	if (mute_ext_ctl)
++		snd_soc_add_card_controls(card,	hb_dacplus_opt_mute_controls,
++				ARRAY_SIZE(hb_dacplus_opt_mute_controls));
++
++	if (snd_mute_gpio)
++		gpiod_set_value_cansleep(snd_mute_gpio,	mute_ext);
++
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplus_update_rate_den(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++	struct snd_ratnum *rats_no_pll;
++	unsigned int num = 0, den = 0;
++	int err;
++
++	rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
++	if (!rats_no_pll)
++		return -ENOMEM;
++
++	rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
++	rats_no_pll->den_min = 1;
++	rats_no_pll->den_max = 128;
++	rats_no_pll->den_step = 1;
++
++	err = snd_interval_ratnum(hw_param_interval(params,
++		SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
++	if (err >= 0 && den) {
++		params->rate_num = num;
++		params->rate_den = den;
++	}
++
++	devm_kfree(rtd->dev, rats_no_pll);
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplus_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	int ret = 0;
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	int channels = params_channels(params);
++	int width = 32;
++
++	if (snd_rpi_hifiberry_is_dacpro) {
++		struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++		width = snd_pcm_format_physical_width(params_format(params));
++
++		snd_rpi_hifiberry_dacplus_set_sclk(component,
++			params_rate(params));
++
++		ret = snd_rpi_hifiberry_dacplus_update_rate_den(
++			substream, params);
++	}
++
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), channels * width);
++	if (ret)
++		return ret;
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), channels * width);
++	return ret;
++}
++
++static int snd_rpi_hifiberry_dacplus_startup(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	if (auto_mute)
++		gpiod_set_value_cansleep(snd_mute_gpio, 0);
++	if (leds_off)
++		return 0;
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++	return 0;
++}
++
++static void snd_rpi_hifiberry_dacplus_shutdown(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++	if (auto_mute)
++		gpiod_set_value_cansleep(snd_mute_gpio, 1);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
++	.hw_params = snd_rpi_hifiberry_dacplus_hw_params,
++	.startup = snd_rpi_hifiberry_dacplus_startup,
++	.shutdown = snd_rpi_hifiberry_dacplus_shutdown,
++};
++
++SND_SOC_DAILINK_DEFS(rpi_hifiberry_dacplus,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = {
++{
++	.name		= "HiFiBerry DAC+",
++	.stream_name	= "HiFiBerry DAC+ HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	.ops		= &snd_rpi_hifiberry_dacplus_ops,
++	.init		= snd_rpi_hifiberry_dacplus_init,
++	SND_SOC_DAILINK_REG(rpi_hifiberry_dacplus),
++},
++};
++
++/* aux device for optional headphone amp */
++static struct snd_soc_aux_dev hifiberry_dacplus_aux_devs[] = {
++	{
++		.dlc = {
++			.name = "tpa6130a2.1-0060",
++		},
++	},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_hifiberry_dacplus = {
++	.name         = "snd_rpi_hifiberry_dacplus",
++	.driver_name  = "HifiberryDacp",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_rpi_hifiberry_dacplus_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai),
++};
++
++static int hb_hp_detect(void)
++{
++	struct i2c_adapter *adap = i2c_get_adapter(1);
++	int ret;
++	struct i2c_client tpa_i2c_client = {
++		.addr = 0x60,
++		.adapter = adap,
++	};
++
++	if (!adap)
++		return -EPROBE_DEFER;	/* I2C module not yet available */
++
++	ret = i2c_smbus_read_byte(&tpa_i2c_client) >= 0;
++	i2c_put_adapter(adap);
++	return ret;
++};
++
++static struct property tpa_enable_prop = {
++	       .name = "status",
++	       .length = 4 + 1, /* length 'okay' + 1 */
++	       .value = "okay",
++	};
++
++static int snd_rpi_hifiberry_dacplus_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	struct snd_soc_card *card = &snd_rpi_hifiberry_dacplus;
++	int len;
++	struct device_node *tpa_node;
++	struct property *tpa_prop;
++	struct of_changeset ocs;
++	struct property *pp;
++	int tmp;
++
++	/* probe for head phone amp */
++	ret = hb_hp_detect();
++	if (ret < 0)
++		return ret;
++	if (ret) {
++		card->aux_dev = hifiberry_dacplus_aux_devs;
++		card->num_aux_devs =
++				ARRAY_SIZE(hifiberry_dacplus_aux_devs);
++		tpa_node = of_find_compatible_node(NULL, NULL, "ti,tpa6130a2");
++		tpa_prop = of_find_property(tpa_node, "status", &len);
++
++		if (strcmp((char *)tpa_prop->value, "okay")) {
++			/* and activate headphone using change_sets */
++			dev_info(&pdev->dev, "activating headphone amplifier");
++			of_changeset_init(&ocs);
++			ret = of_changeset_update_property(&ocs, tpa_node,
++							&tpa_enable_prop);
++			if (ret) {
++				dev_err(&pdev->dev,
++				"cannot activate headphone amplifier\n");
++				return -ENODEV;
++			}
++			ret = of_changeset_apply(&ocs);
++			if (ret) {
++				dev_err(&pdev->dev,
++				"cannot activate headphone amplifier\n");
++				return -ENODEV;
++			}
++		}
++	}
++
++	snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_rpi_hifiberry_dacplus_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++			"i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++
++		digital_gain_0db_limit = !of_property_read_bool(
++			pdev->dev.of_node, "hifiberry,24db_digital_gain");
++		slave = of_property_read_bool(pdev->dev.of_node,
++						"hifiberry-dacplus,slave");
++		leds_off = of_property_read_bool(pdev->dev.of_node,
++						"hifiberry-dacplus,leds_off");
++		auto_mute = of_property_read_bool(pdev->dev.of_node,
++						"hifiberry-dacplus,auto_mute");
++
++		/*
++		 * check for HW MUTE as defined in DT-overlay
++		 * active high, therefore default to HIGH to MUTE
++		 */
++		snd_mute_gpio =	devm_gpiod_get_optional(&pdev->dev,
++						 "mute", GPIOD_OUT_HIGH);
++		if (IS_ERR(snd_mute_gpio)) {
++			dev_err(&pdev->dev, "Can't allocate GPIO (HW-MUTE)");
++			return PTR_ERR(snd_mute_gpio);
++		}
++
++		/* add ALSA control if requested in DT-overlay (AMP100) */
++		pp = of_find_property(pdev->dev.of_node,
++				"hifiberry-dacplus,mute_ext_ctl", &tmp);
++		if (pp) {
++			if (!of_property_read_u32(pdev->dev.of_node,
++				"hifiberry-dacplus,mute_ext_ctl", &mute_ext)) {
++				/* ALSA control will be used */
++				mute_ext_ctl = 1;
++			}
++		}
++
++		/* check for HW RESET (AMP100) */
++		snd_reset_gpio = devm_gpiod_get_optional(&pdev->dev,
++						"reset", GPIOD_OUT_HIGH);
++		if (IS_ERR(snd_reset_gpio)) {
++			dev_err(&pdev->dev, "Can't allocate GPIO (HW-RESET)");
++			return PTR_ERR(snd_reset_gpio);
++		}
++
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev,
++			&snd_rpi_hifiberry_dacplus);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++	if (!ret) {
++		if (snd_mute_gpio)
++			dev_info(&pdev->dev, "GPIO%i for HW-MUTE selected",
++					gpio_chip_hwgpio(snd_mute_gpio));
++		if (snd_reset_gpio)
++			dev_info(&pdev->dev, "GPIO%i for HW-RESET selected",
++					gpio_chip_hwgpio(snd_reset_gpio));
++	}
++	return ret;
++}
++
++static const struct of_device_id snd_rpi_hifiberry_dacplus_of_match[] = {
++	{ .compatible = "hifiberry,hifiberry-dacplus", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplus_of_match);
++
++static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
++	.driver = {
++		.name   = "snd-rpi-hifiberry-dacplus",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_hifiberry_dacplus_of_match,
++	},
++	.probe          = snd_rpi_hifiberry_dacplus_probe,
++};
++
++module_platform_driver(snd_rpi_hifiberry_dacplus_driver);
++
++MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
++MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/hifiberry_dacplusadc.c
+@@ -0,0 +1,398 @@
++/*
++ * ASoC Driver for HiFiBerry DAC+ / DAC Pro with ADC
++ *
++ * Author:	Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
++ *		Copyright 2014-2015
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *		ADC added by Joerg Schambacher <joscha@schambacher.com>
++ *		Copyright 2018
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/kernel.h>
++#include <linux/clk.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/slab.h>
++#include <linux/delay.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include "../codecs/pcm512x.h"
++
++#define HIFIBERRY_DACPRO_NOCLOCK 0
++#define HIFIBERRY_DACPRO_CLK44EN 1
++#define HIFIBERRY_DACPRO_CLK48EN 2
++
++struct platform_device *dmic_codec_dev;
++
++struct pcm512x_priv {
++	struct regmap *regmap;
++	struct clk *sclk;
++};
++
++/* Clock rate of CLK44EN attached to GPIO6 pin */
++#define CLK_44EN_RATE 22579200UL
++/* Clock rate of CLK48EN attached to GPIO3 pin */
++#define CLK_48EN_RATE 24576000UL
++
++static bool slave;
++static bool snd_rpi_hifiberry_is_dacpro;
++static bool digital_gain_0db_limit = true;
++static bool leds_off;
++
++static void snd_rpi_hifiberry_dacplusadc_select_clk(struct snd_soc_component *component,
++	int clk_id)
++{
++	switch (clk_id) {
++	case HIFIBERRY_DACPRO_NOCLOCK:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
++		break;
++	case HIFIBERRY_DACPRO_CLK44EN:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
++		break;
++	case HIFIBERRY_DACPRO_CLK48EN:
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
++		break;
++	}
++}
++
++static void snd_rpi_hifiberry_dacplusadc_clk_gpio(struct snd_soc_component *component)
++{
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
++}
++
++static bool snd_rpi_hifiberry_dacplusadc_is_sclk(struct snd_soc_component *component)
++{
++	unsigned int sck;
++
++	sck = snd_soc_component_read(component, PCM512x_RATE_DET_4);
++	return (!(sck & 0x40));
++}
++
++static bool snd_rpi_hifiberry_dacplusadc_is_sclk_sleep(
++	struct snd_soc_component *component)
++{
++	msleep(2);
++	return snd_rpi_hifiberry_dacplusadc_is_sclk(component);
++}
++
++static bool snd_rpi_hifiberry_dacplusadc_is_pro_card(struct snd_soc_component *component)
++{
++	bool isClk44EN, isClk48En, isNoClk;
++
++	snd_rpi_hifiberry_dacplusadc_clk_gpio(component);
++
++	snd_rpi_hifiberry_dacplusadc_select_clk(component, HIFIBERRY_DACPRO_CLK44EN);
++	isClk44EN = snd_rpi_hifiberry_dacplusadc_is_sclk_sleep(component);
++
++	snd_rpi_hifiberry_dacplusadc_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK);
++	isNoClk = snd_rpi_hifiberry_dacplusadc_is_sclk_sleep(component);
++
++	snd_rpi_hifiberry_dacplusadc_select_clk(component, HIFIBERRY_DACPRO_CLK48EN);
++	isClk48En = snd_rpi_hifiberry_dacplusadc_is_sclk_sleep(component);
++
++	return (isClk44EN && isClk48En && !isNoClk);
++}
++
++static int snd_rpi_hifiberry_dacplusadc_clk_for_rate(int sample_rate)
++{
++	int type;
++
++	switch (sample_rate) {
++	case 11025:
++	case 22050:
++	case 44100:
++	case 88200:
++	case 176400:
++	case 352800:
++		type = HIFIBERRY_DACPRO_CLK44EN;
++		break;
++	default:
++		type = HIFIBERRY_DACPRO_CLK48EN;
++		break;
++	}
++	return type;
++}
++
++static void snd_rpi_hifiberry_dacplusadc_set_sclk(struct snd_soc_component *component,
++	int sample_rate)
++{
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++
++	if (!IS_ERR(pcm512x->sclk)) {
++		int ctype;
++
++		ctype = snd_rpi_hifiberry_dacplusadc_clk_for_rate(sample_rate);
++		clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN)
++			? CLK_44EN_RATE : CLK_48EN_RATE);
++		snd_rpi_hifiberry_dacplusadc_select_clk(component, ctype);
++	}
++}
++
++static int snd_rpi_hifiberry_dacplusadc_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct pcm512x_priv *priv;
++
++	if (slave)
++		snd_rpi_hifiberry_is_dacpro = false;
++	else
++		snd_rpi_hifiberry_is_dacpro =
++				snd_rpi_hifiberry_dacplusadc_is_pro_card(component);
++
++	if (snd_rpi_hifiberry_is_dacpro) {
++		struct snd_soc_dai_link *dai = rtd->dai_link;
++
++		dai->name = "HiFiBerry ADCDAC+ Pro";
++		dai->stream_name = "HiFiBerry ADCDAC+ Pro HiFi";
++		dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++			| SND_SOC_DAIFMT_CBM_CFM;
++
++		snd_soc_component_update_bits(component, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
++		snd_soc_component_update_bits(component, PCM512x_MASTER_MODE, 0x03, 0x03);
++		snd_soc_component_update_bits(component, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
++	} else {
++		priv = snd_soc_component_get_drvdata(component);
++		priv->sclk = ERR_PTR(-ENOENT);
++	}
++
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
++	if (leds_off)
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++	else
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++
++	if (digital_gain_0db_limit) {
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++	}
++
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplusadc_update_rate_den(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++	struct snd_ratnum *rats_no_pll;
++	unsigned int num = 0, den = 0;
++	int err;
++
++	rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
++	if (!rats_no_pll)
++		return -ENOMEM;
++
++	rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
++	rats_no_pll->den_min = 1;
++	rats_no_pll->den_max = 128;
++	rats_no_pll->den_step = 1;
++
++	err = snd_interval_ratnum(hw_param_interval(params,
++		SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
++	if (err >= 0 && den) {
++		params->rate_num = num;
++		params->rate_den = den;
++	}
++
++	devm_kfree(rtd->dev, rats_no_pll);
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplusadc_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	int ret = 0;
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	int channels = params_channels(params);
++	int width = 32;
++
++	if (snd_rpi_hifiberry_is_dacpro) {
++		struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++		width = snd_pcm_format_physical_width(params_format(params));
++
++		snd_rpi_hifiberry_dacplusadc_set_sclk(component,
++			params_rate(params));
++
++		ret = snd_rpi_hifiberry_dacplusadc_update_rate_den(
++			substream, params);
++	}
++
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), channels * width);
++	if (ret)
++		return ret;
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), channels * width);
++	return ret;
++}
++
++static int hifiberry_dacplusadc_LED_cnt;
++
++static int snd_rpi_hifiberry_dacplusadc_startup(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	if (leds_off)
++		return 0;
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1,
++					 0x08, 0x08);
++	hifiberry_dacplusadc_LED_cnt++;
++	return 0;
++}
++
++static void snd_rpi_hifiberry_dacplusadc_shutdown(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	hifiberry_dacplusadc_LED_cnt--;
++	if (!hifiberry_dacplusadc_LED_cnt)
++		snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1,
++						 0x08, 0x00);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_hifiberry_dacplusadc_ops = {
++	.hw_params = snd_rpi_hifiberry_dacplusadc_hw_params,
++	.startup = snd_rpi_hifiberry_dacplusadc_startup,
++	.shutdown = snd_rpi_hifiberry_dacplusadc_shutdown,
++};
++
++SND_SOC_DAILINK_DEFS(hifi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi"),
++			   COMP_CODEC("dmic-codec", "dmic-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadc_dai[] = {
++{
++	.name		= "HiFiBerry DAC+ADC",
++	.stream_name	= "HiFiBerry DAC+ADC HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	.ops		= &snd_rpi_hifiberry_dacplusadc_ops,
++	.init		= snd_rpi_hifiberry_dacplusadc_init,
++	SND_SOC_DAILINK_REG(hifi),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_hifiberry_dacplusadc = {
++	.name         = "snd_rpi_hifiberry_dacplusadc",
++	.driver_name  = "HifiberryDacpAdc",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_rpi_hifiberry_dacplusadc_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadc_dai),
++};
++
++
++static int snd_rpi_hifiberry_dacplusadc_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_rpi_hifiberry_dacplusadc.dev = &pdev->dev;
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_rpi_hifiberry_dacplusadc_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++			"i2s-controller", 0);
++		if (i2s_node) {
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->of_node = i2s_node;
++			dai->cpus->dai_name = NULL;
++			dai->platforms->name = NULL;
++		}
++	}
++	digital_gain_0db_limit = !of_property_read_bool(
++		pdev->dev.of_node, "hifiberry,24db_digital_gain");
++	slave = of_property_read_bool(pdev->dev.of_node,
++					"hifiberry-dacplusadc,slave");
++	leds_off = of_property_read_bool(pdev->dev.of_node,
++					"hifiberry-dacplusadc,leds_off");
++
++	ret = devm_snd_soc_register_card(&pdev->dev,
++						 &snd_rpi_hifiberry_dacplusadc);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_rpi_hifiberry_dacplusadc_of_match[] = {
++	{ .compatible = "hifiberry,hifiberry-dacplusadc", },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplusadc_of_match);
++
++static struct platform_driver snd_rpi_hifiberry_dacplusadc_driver = {
++	.driver = {
++		.name   = "snd-rpi-hifiberry-dacplusadc",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_hifiberry_dacplusadc_of_match,
++	},
++	.probe          = snd_rpi_hifiberry_dacplusadc_probe,
++};
++
++static int __init hifiberry_dacplusadc_init(void)
++{
++	int ret;
++
++	dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL,
++							 0);
++	if (IS_ERR(dmic_codec_dev)) {
++		pr_err("%s: dmic-codec device registration failed\n", __func__);
++		return PTR_ERR(dmic_codec_dev);
++	}
++
++	ret = platform_driver_register(&snd_rpi_hifiberry_dacplusadc_driver);
++	if (ret) {
++		pr_err("%s: platform driver registration failed\n", __func__);
++		platform_device_unregister(dmic_codec_dev);
++	}
++
++	return ret;
++}
++module_init(hifiberry_dacplusadc_init);
++
++static void __exit hifiberry_dacplusadc_exit(void)
++{
++	platform_driver_unregister(&snd_rpi_hifiberry_dacplusadc_driver);
++	platform_device_unregister(dmic_codec_dev);
++}
++module_exit(hifiberry_dacplusadc_exit);
++
++MODULE_AUTHOR("Joerg Schambacher <joscha@schambacher.com>");
++MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
++MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
+@@ -0,0 +1,537 @@
++/*
++ * ASoC Driver for HiFiBerry DAC+ / DAC Pro with ADC PRO Version (SW control)
++ *
++ * Author:	Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
++ *		Copyright 2014-2015
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *		ADC added by Joerg Schambacher <joerg@i2audio.com>
++ *		Copyright 2018-19
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/kernel.h>
++#include <linux/clk.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/slab.h>
++#include <linux/delay.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++#include <sound/tlv.h>
++
++#include "../codecs/pcm512x.h"
++#include "../codecs/pcm186x.h"
++
++#define HIFIBERRY_DACPRO_NOCLOCK 0
++#define HIFIBERRY_DACPRO_CLK44EN 1
++#define HIFIBERRY_DACPRO_CLK48EN 2
++
++struct pcm512x_priv {
++	struct regmap *regmap;
++	struct clk *sclk;
++};
++
++/* Clock rate of CLK44EN attached to GPIO6 pin */
++#define CLK_44EN_RATE 22579200UL
++/* Clock rate of CLK48EN attached to GPIO3 pin */
++#define CLK_48EN_RATE 24576000UL
++
++static bool slave;
++static bool snd_rpi_hifiberry_is_dacpro;
++static bool digital_gain_0db_limit = true;
++static bool leds_off;
++
++static const unsigned int pcm186x_adc_input_channel_sel_value[] = {
++	0x00, 0x01, 0x02, 0x03, 0x10
++};
++
++static const char * const pcm186x_adcl_input_channel_sel_text[] = {
++	"No Select",
++	"VINL1[SE]",					/* Default for ADCL */
++	"VINL2[SE]",
++	"VINL2[SE] + VINL1[SE]",
++	"{VIN1P, VIN1M}[DIFF]"
++};
++
++static const char * const pcm186x_adcr_input_channel_sel_text[] = {
++	"No Select",
++	"VINR1[SE]",					/* Default for ADCR */
++	"VINR2[SE]",
++	"VINR2[SE] + VINR1[SE]",
++	"{VIN2P, VIN2M}[DIFF]"
++};
++
++static const struct soc_enum pcm186x_adc_input_channel_sel[] = {
++	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_L, 0,
++			      PCM186X_ADC_INPUT_SEL_MASK,
++			      ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
++			      pcm186x_adcl_input_channel_sel_text,
++			      pcm186x_adc_input_channel_sel_value),
++	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_R, 0,
++			      PCM186X_ADC_INPUT_SEL_MASK,
++			      ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
++			      pcm186x_adcr_input_channel_sel_text,
++			      pcm186x_adc_input_channel_sel_value),
++};
++
++static const unsigned int pcm186x_mic_bias_sel_value[] = {
++	0x00, 0x01, 0x11
++};
++
++static const char * const pcm186x_mic_bias_sel_text[] = {
++	"Mic Bias off",
++	"Mic Bias on",
++	"Mic Bias with Bypass Resistor"
++};
++
++static const struct soc_enum pcm186x_mic_bias_sel[] = {
++	SOC_VALUE_ENUM_SINGLE(PCM186X_MIC_BIAS_CTRL, 0,
++			      GENMASK(4, 0),
++			      ARRAY_SIZE(pcm186x_mic_bias_sel_text),
++			      pcm186x_mic_bias_sel_text,
++			      pcm186x_mic_bias_sel_value),
++};
++
++static const unsigned int pcm186x_gain_sel_value[] = {
++	0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
++	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
++	0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
++	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
++	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
++	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
++	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
++	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
++	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
++	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
++	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
++	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
++	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
++	0x50
++};
++
++static const char * const pcm186x_gain_sel_text[] = {
++	"-12.0dB", "-11.5dB", "-11.0dB", "-10.5dB", "-10.0dB", "-9.5dB",
++	"-9.0dB", "-8.5dB", "-8.0dB", "-7.5dB", "-7.0dB", "-6.5dB",
++	"-6.0dB", "-5.5dB", "-5.0dB", "-4.5dB", "-4.0dB", "-3.5dB",
++	"-3.0dB", "-2.5dB", "-2.0dB", "-1.5dB", "-1.0dB", "-0.5dB",
++	"0.0dB", "0.5dB", "1.0dB", "1.5dB", "2.0dB", "2.5dB",
++	"3.0dB", "3.5dB", "4.0dB", "4.5dB", "5.0dB", "5.5dB",
++	"6.0dB", "6.5dB", "7.0dB", "7.5dB", "8.0dB", "8.5dB",
++	"9.0dB", "9.5dB", "10.0dB", "10.5dB", "11.0dB", "11.5dB",
++	"12.0dB", "12.5dB", "13.0dB", "13.5dB", "14.0dB", "14.5dB",
++	"15.0dB", "15.5dB", "16.0dB", "16.5dB", "17.0dB", "17.5dB",
++	"18.0dB", "18.5dB", "19.0dB", "19.5dB", "20.0dB", "20.5dB",
++	"21.0dB", "21.5dB", "22.0dB", "22.5dB", "23.0dB", "23.5dB",
++	"24.0dB", "24.5dB", "25.0dB", "25.5dB", "26.0dB", "26.5dB",
++	"27.0dB", "27.5dB", "28.0dB", "28.5dB", "29.0dB", "29.5dB",
++	"30.0dB", "30.5dB", "31.0dB", "31.5dB", "32.0dB", "32.5dB",
++	"33.0dB", "33.5dB", "34.0dB", "34.5dB", "35.0dB", "35.5dB",
++	"36.0dB", "36.5dB", "37.0dB", "37.5dB", "38.0dB", "38.5dB",
++	"39.0dB", "39.5dB", "40.0dB"};
++
++static const struct soc_enum pcm186x_gain_sel[] = {
++	SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_L, 0,
++			      0xff,
++			      ARRAY_SIZE(pcm186x_gain_sel_text),
++			      pcm186x_gain_sel_text,
++			      pcm186x_gain_sel_value),
++	SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_R, 0,
++			      0xff,
++			      ARRAY_SIZE(pcm186x_gain_sel_text),
++			      pcm186x_gain_sel_text,
++			      pcm186x_gain_sel_value),
++};
++
++static const struct snd_kcontrol_new pcm1863_snd_controls_card[] = {
++	SOC_ENUM("ADC Left Input", pcm186x_adc_input_channel_sel[0]),
++	SOC_ENUM("ADC Right Input", pcm186x_adc_input_channel_sel[1]),
++	SOC_ENUM("ADC Mic Bias", pcm186x_mic_bias_sel),
++	SOC_ENUM("PGA Gain Left", pcm186x_gain_sel[0]),
++	SOC_ENUM("PGA Gain Right", pcm186x_gain_sel[1]),
++};
++
++static int pcm1863_add_controls(struct snd_soc_component *component)
++{
++	snd_soc_add_component_controls(component,
++			pcm1863_snd_controls_card,
++			ARRAY_SIZE(pcm1863_snd_controls_card));
++	return 0;
++}
++
++static void snd_rpi_hifiberry_dacplusadcpro_select_clk(
++					struct snd_soc_component *component, int clk_id)
++{
++	switch (clk_id) {
++	case HIFIBERRY_DACPRO_NOCLOCK:
++		snd_soc_component_update_bits(component,
++				PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
++		break;
++	case HIFIBERRY_DACPRO_CLK44EN:
++		snd_soc_component_update_bits(component,
++				PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
++		break;
++	case HIFIBERRY_DACPRO_CLK48EN:
++		snd_soc_component_update_bits(component,
++				PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
++		break;
++	}
++	usleep_range(3000, 4000);
++}
++
++static void snd_rpi_hifiberry_dacplusadcpro_clk_gpio(struct snd_soc_component *component)
++{
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
++}
++
++static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk(struct snd_soc_component *component)
++{
++	unsigned int sck;
++
++	sck = snd_soc_component_read(component, PCM512x_RATE_DET_4);
++	return (!(sck & 0x40));
++}
++
++static bool snd_rpi_hifiberry_dacplusadcpro_is_pro_card(struct snd_soc_component *component)
++{
++	bool isClk44EN, isClk48En, isNoClk;
++
++	snd_rpi_hifiberry_dacplusadcpro_clk_gpio(component);
++
++	snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK44EN);
++	isClk44EN = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
++
++	snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK);
++	isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
++
++	snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK48EN);
++	isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
++
++	return (isClk44EN && isClk48En && !isNoClk);
++}
++
++static int snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(int sample_rate)
++{
++	int type;
++
++	switch (sample_rate) {
++	case 11025:
++	case 22050:
++	case 44100:
++	case 88200:
++	case 176400:
++	case 352800:
++		type = HIFIBERRY_DACPRO_CLK44EN;
++		break;
++	default:
++		type = HIFIBERRY_DACPRO_CLK48EN;
++		break;
++	}
++	return type;
++}
++
++static void snd_rpi_hifiberry_dacplusadcpro_set_sclk(struct snd_soc_component *component,
++	int sample_rate)
++{
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++
++	if (!IS_ERR(pcm512x->sclk)) {
++		int ctype;
++
++		ctype = snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(sample_rate);
++		clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN)
++			? CLK_44EN_RATE : CLK_48EN_RATE);
++		snd_rpi_hifiberry_dacplusadcpro_select_clk(component, ctype);
++	}
++}
++
++static int snd_rpi_hifiberry_dacplusadcpro_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_component *adc = asoc_rtd_to_codec(rtd, 1)->component;
++	struct snd_soc_dai_driver *adc_driver = asoc_rtd_to_codec(rtd, 1)->driver;
++	struct pcm512x_priv *priv;
++	int ret;
++
++	if (slave)
++		snd_rpi_hifiberry_is_dacpro = false;
++	else
++		snd_rpi_hifiberry_is_dacpro =
++				snd_rpi_hifiberry_dacplusadcpro_is_pro_card(dac);
++
++	if (snd_rpi_hifiberry_is_dacpro) {
++		struct snd_soc_dai_link *dai = rtd->dai_link;
++
++		dai->name = "HiFiBerry DAC+ADC Pro";
++		dai->stream_name = "HiFiBerry DAC+ADC Pro HiFi";
++		dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++			| SND_SOC_DAIFMT_CBM_CFM;
++
++		// set DAC DAI configuration
++		ret = snd_soc_dai_set_fmt(asoc_rtd_to_codec(rtd, 0),
++				SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++			| SND_SOC_DAIFMT_CBM_CFM);
++		if (ret < 0)
++			return ret;
++
++		// set ADC DAI configuration
++		ret = snd_soc_dai_set_fmt(asoc_rtd_to_codec(rtd, 1),
++				SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++			| SND_SOC_DAIFMT_CBS_CFS);
++		if (ret < 0)
++			return ret;
++
++		// set CPU DAI configuration
++		ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
++			SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
++		if (ret < 0)
++			return ret;
++
++		snd_soc_component_update_bits(dac, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
++		snd_soc_component_update_bits(dac, PCM512x_MASTER_MODE, 0x03, 0x03);
++		snd_soc_component_update_bits(dac, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
++	} else {
++		priv = snd_soc_component_get_drvdata(dac);
++		priv->sclk = ERR_PTR(-ENOENT);
++	}
++
++	/* disable 24bit mode as long as I2S module does not have sign extension fixed */
++	adc_driver->capture.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE;
++
++	snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08);
++	snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
++	if (leds_off)
++		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++	else
++		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++
++	ret = pcm1863_add_controls(adc);
++	if (ret < 0)
++		dev_warn(rtd->dev, "Failed to add pcm1863 controls: %d\n",
++		ret);
++
++	/* set GPIO2 to output, GPIO3 input */
++	snd_soc_component_write(adc, PCM186X_GPIO3_2_CTRL, 0x00);
++	snd_soc_component_write(adc, PCM186X_GPIO3_2_DIR_CTRL, 0x04);
++	if (leds_off)
++		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00);
++	else
++		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
++
++	if (digital_gain_0db_limit) {
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++	}
++
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; /* only use DAC */
++	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
++	struct snd_ratnum *rats_no_pll;
++	unsigned int num = 0, den = 0;
++	int err;
++
++	rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
++	if (!rats_no_pll)
++		return -ENOMEM;
++
++	rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
++	rats_no_pll->den_min = 1;
++	rats_no_pll->den_max = 128;
++	rats_no_pll->den_step = 1;
++
++	err = snd_interval_ratnum(hw_param_interval(params,
++		SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
++	if (err >= 0 && den) {
++		params->rate_num = num;
++		params->rate_den = den;
++	}
++
++	devm_kfree(rtd->dev, rats_no_pll);
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplusadcpro_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	int ret = 0;
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	int channels = params_channels(params);
++	int width = 32;
++	struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_dai *dai = asoc_rtd_to_codec(rtd, 0);
++	struct snd_soc_dai_driver *drv = dai->driver;
++	const struct snd_soc_dai_ops *ops = drv->ops;
++
++	if (snd_rpi_hifiberry_is_dacpro) {
++		width = snd_pcm_format_physical_width(params_format(params));
++
++		snd_rpi_hifiberry_dacplusadcpro_set_sclk(dac,
++			params_rate(params));
++
++		ret = snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
++			substream, params);
++		if (ret)
++			return ret;
++	}
++
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), channels * width);
++	if (ret)
++		return ret;
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), channels * width);
++	if (ret)
++		return ret;
++	if (snd_rpi_hifiberry_is_dacpro && ops->hw_params)
++		ret = ops->hw_params(substream, params, dai);
++	return ret;
++}
++
++static int snd_rpi_hifiberry_dacplusadcpro_startup(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_component *adc = asoc_rtd_to_codec(rtd, 1)->component;
++
++	if (leds_off)
++		return 0;
++	/* switch on respective LED */
++	if (!substream->stream)
++		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++	else
++		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
++	return 0;
++}
++
++static void snd_rpi_hifiberry_dacplusadcpro_shutdown(
++	struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_component *adc = asoc_rtd_to_codec(rtd, 1)->component;
++
++	/* switch off respective LED */
++	if (!substream->stream)
++		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++	else
++		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00);
++}
++
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_hifiberry_dacplusadcpro_ops = {
++	.hw_params = snd_rpi_hifiberry_dacplusadcpro_hw_params,
++	.startup = snd_rpi_hifiberry_dacplusadcpro_startup,
++	.shutdown = snd_rpi_hifiberry_dacplusadcpro_shutdown,
++};
++
++SND_SOC_DAILINK_DEFS(hifi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi"),
++			   COMP_CODEC("pcm186x.1-004a", "pcm1863-aif")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadcpro_dai[] = {
++{
++	.name		= "HiFiBerry DAC+ADC PRO",
++	.stream_name	= "HiFiBerry DAC+ADC PRO HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	.ops		= &snd_rpi_hifiberry_dacplusadcpro_ops,
++	.init		= snd_rpi_hifiberry_dacplusadcpro_init,
++	SND_SOC_DAILINK_REG(hifi),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_hifiberry_dacplusadcpro = {
++	.name         = "snd_rpi_hifiberry_dacplusadcpro",
++	.driver_name  = "HifiberryDacpAdcPro",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_rpi_hifiberry_dacplusadcpro_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadcpro_dai),
++};
++
++static int snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev)
++{
++	int ret = 0, i = 0;
++	struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro;
++
++	snd_rpi_hifiberry_dacplusadcpro.dev = &pdev->dev;
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_rpi_hifiberry_dacplusadcpro_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++			"i2s-controller", 0);
++		if (i2s_node) {
++			for (i = 0; i < card->num_links; i++) {
++				dai->cpus->dai_name = NULL;
++				dai->cpus->of_node = i2s_node;
++				dai->platforms->name = NULL;
++				dai->platforms->of_node = i2s_node;
++			}
++		}
++	}
++	digital_gain_0db_limit = !of_property_read_bool(
++		pdev->dev.of_node, "hifiberry-dacplusadcpro,24db_digital_gain");
++	slave = of_property_read_bool(pdev->dev.of_node,
++					"hifiberry-dacplusadcpro,slave");
++	leds_off = of_property_read_bool(pdev->dev.of_node,
++					"hifiberry-dacplusadcpro,leds_off");
++	ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplusadcpro);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_rpi_hifiberry_dacplusadcpro_of_match[] = {
++	{ .compatible = "hifiberry,hifiberry-dacplusadcpro", },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplusadcpro_of_match);
++
++static struct platform_driver snd_rpi_hifiberry_dacplusadcpro_driver = {
++	.driver = {
++		.name   = "snd-rpi-hifiberry-dacplusadcpro",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_hifiberry_dacplusadcpro_of_match,
++	},
++	.probe          = snd_rpi_hifiberry_dacplusadcpro_probe,
++};
++
++module_platform_driver(snd_rpi_hifiberry_dacplusadcpro_driver);
++
++MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
++MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
++MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/hifiberry_dacplusdsp.c
+@@ -0,0 +1,90 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * ASoC Driver for HiFiBerry DAC + DSP
++ *
++ * Author:	Joerg Schambacher <joscha@schambacher.com>
++ *		Copyright 2018
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <sound/soc.h>
++
++static struct snd_soc_component_driver dacplusdsp_component_driver;
++
++static struct snd_soc_dai_driver dacplusdsp_dai = {
++	.name = "dacplusdsp-hifi",
++	.capture = {
++		.stream_name = "DAC+DSP Capture",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.formats = SNDRV_PCM_FMTBIT_S16_LE |
++			   SNDRV_PCM_FMTBIT_S24_LE |
++			   SNDRV_PCM_FMTBIT_S32_LE,
++	},
++	.playback = {
++		.stream_name = "DACP+DSP Playback",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.formats = SNDRV_PCM_FMTBIT_S16_LE |
++			   SNDRV_PCM_FMTBIT_S24_LE |
++			   SNDRV_PCM_FMTBIT_S32_LE,
++	},
++	.symmetric_rate = 1};
++
++#ifdef CONFIG_OF
++static const struct of_device_id dacplusdsp_ids[] = {
++	{
++		.compatible = "hifiberry,dacplusdsp",
++	},
++	{} };
++MODULE_DEVICE_TABLE(of, dacplusdsp_ids);
++#endif
++
++static int dacplusdsp_platform_probe(struct platform_device *pdev)
++{
++	int ret;
++
++	ret = snd_soc_register_component(&pdev->dev,
++			&dacplusdsp_component_driver, &dacplusdsp_dai, 1);
++	if (ret) {
++		pr_alert("snd_soc_register_component failed\n");
++		return ret;
++	}
++
++	return 0;
++}
++
++static int dacplusdsp_platform_remove(struct platform_device *pdev)
++{
++	snd_soc_unregister_component(&pdev->dev);
++	return 0;
++}
++
++static struct platform_driver dacplusdsp_driver = {
++	.driver = {
++		.name = "hifiberry-dacplusdsp-codec",
++		.of_match_table = of_match_ptr(dacplusdsp_ids),
++		},
++		.probe = dacplusdsp_platform_probe,
++		.remove = dacplusdsp_platform_remove,
++};
++
++module_platform_driver(dacplusdsp_driver);
++
++MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
++MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+DSP");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/hifiberry_dacplushd.c
+@@ -0,0 +1,238 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * ASoC Driver for HiFiBerry DAC+ HD
++ *
++ * Author:	Joerg Schambacher, i2Audio GmbH for HiFiBerry
++ *		Copyright 2020
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/kernel.h>
++#include <linux/delay.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/delay.h>
++#include <linux/gpio.h>
++#include <linux/gpio/consumer.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <linux/i2c.h>
++#include <linux/clk.h>
++
++#include "../codecs/pcm179x.h"
++
++#define DEFAULT_RATE		44100
++
++struct brd_drv_data {
++	struct regmap *regmap;
++	struct clk *sclk;
++};
++
++static struct brd_drv_data drvdata;
++static struct gpio_desc *reset_gpio;
++static const unsigned int hb_dacplushd_rates[] = {
++	192000, 96000, 48000, 176400, 88200, 44100,
++};
++
++static struct snd_pcm_hw_constraint_list hb_dacplushd_constraints = {
++	.list = hb_dacplushd_rates,
++	.count = ARRAY_SIZE(hb_dacplushd_rates),
++};
++
++static int snd_rpi_hb_dacplushd_startup(struct snd_pcm_substream *substream)
++{
++	/* constraints for standard sample rates */
++	snd_pcm_hw_constraint_list(substream->runtime, 0,
++				SNDRV_PCM_HW_PARAM_RATE,
++				&hb_dacplushd_constraints);
++	return 0;
++}
++
++static void snd_rpi_hifiberry_dacplushd_set_sclk(
++		struct snd_soc_component *component,
++		int sample_rate)
++{
++	if (!IS_ERR(drvdata.sclk))
++		clk_set_rate(drvdata.sclk, sample_rate);
++}
++
++static int snd_rpi_hifiberry_dacplushd_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_dai_link *dai = rtd->dai_link;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++
++	dai->name = "HiFiBerry DAC+ HD";
++	dai->stream_name = "HiFiBerry DAC+ HD HiFi";
++	dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++		| SND_SOC_DAIFMT_CBM_CFM;
++
++	/* allow only fixed 32 clock counts per channel */
++	snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2);
++
++	return 0;
++}
++
++static int snd_rpi_hifiberry_dacplushd_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	int ret = 0;
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++
++	snd_rpi_hifiberry_dacplushd_set_sclk(component, params_rate(params));
++	return ret;
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_hifiberry_dacplushd_ops = {
++	.startup = snd_rpi_hb_dacplushd_startup,
++	.hw_params = snd_rpi_hifiberry_dacplushd_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(hifi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm179x.1-004c", "pcm179x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++
++static struct snd_soc_dai_link snd_rpi_hifiberry_dacplushd_dai[] = {
++{
++	.name		= "HiFiBerry DAC+ HD",
++	.stream_name	= "HiFiBerry DAC+ HD HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	.ops		= &snd_rpi_hifiberry_dacplushd_ops,
++	.init		= snd_rpi_hifiberry_dacplushd_init,
++	SND_SOC_DAILINK_REG(hifi),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_hifiberry_dacplushd = {
++	.name         = "snd_rpi_hifiberry_dacplushd",
++	.driver_name  = "HifiberryDacplusHD",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_rpi_hifiberry_dacplushd_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplushd_dai),
++};
++
++static int snd_rpi_hifiberry_dacplushd_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	static int dac_reset_done;
++	struct device *dev = &pdev->dev;
++	struct device_node *dev_node = dev->of_node;
++
++	snd_rpi_hifiberry_dacplushd.dev = &pdev->dev;
++
++	/* get GPIO and release DAC from RESET */
++	if (!dac_reset_done) {
++		reset_gpio = gpiod_get(&pdev->dev, "reset", GPIOD_OUT_LOW);
++		if (IS_ERR(reset_gpio)) {
++			dev_err(&pdev->dev, "gpiod_get() failed\n");
++			return -EINVAL;
++		}
++		dac_reset_done = 1;
++	}
++	if (!IS_ERR(reset_gpio))
++		gpiod_set_value(reset_gpio, 0);
++	msleep(1);
++	if (!IS_ERR(reset_gpio))
++		gpiod_set_value(reset_gpio, 1);
++	msleep(1);
++	if (!IS_ERR(reset_gpio))
++		gpiod_set_value(reset_gpio, 0);
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_rpi_hifiberry_dacplushd_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++			"i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->of_node = i2s_node;
++			dai->cpus->dai_name = NULL;
++			dai->platforms->name = NULL;
++		} else {
++			return -EPROBE_DEFER;
++		}
++
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev,
++			&snd_rpi_hifiberry_dacplushd);
++	if (ret && ret != -EPROBE_DEFER) {
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++		return ret;
++	}
++	if (ret == -EPROBE_DEFER)
++		return ret;
++
++	dev_set_drvdata(dev, &drvdata);
++	if (dev_node == NULL) {
++		dev_err(&pdev->dev, "Device tree node not found\n");
++		return -ENODEV;
++	}
++
++	drvdata.sclk = devm_clk_get(dev, NULL);
++	if (IS_ERR(drvdata.sclk)) {
++		drvdata.sclk = ERR_PTR(-ENOENT);
++		return -ENODEV;
++	}
++
++	clk_set_rate(drvdata.sclk, DEFAULT_RATE);
++
++	return ret;
++}
++
++static int snd_rpi_hifiberry_dacplushd_remove(struct platform_device *pdev)
++{
++	if (IS_ERR(reset_gpio))
++		return -EINVAL;
++
++	/* put DAC into RESET and release GPIO */
++	gpiod_set_value(reset_gpio, 0);
++	gpiod_put(reset_gpio);
++
++	return 0;
++}
++
++static const struct of_device_id snd_rpi_hifiberry_dacplushd_of_match[] = {
++	{ .compatible = "hifiberry,hifiberry-dacplushd", },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplushd_of_match);
++
++static struct platform_driver snd_rpi_hifiberry_dacplushd_driver = {
++	.driver = {
++		.name   = "snd-rpi-hifiberry-dacplushd",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_hifiberry_dacplushd_of_match,
++	},
++	.probe          = snd_rpi_hifiberry_dacplushd_probe,
++	.remove		= snd_rpi_hifiberry_dacplushd_remove,
++};
++
++module_platform_driver(snd_rpi_hifiberry_dacplushd_driver);
++
++MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
++MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ HD");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/i-sabre-q2m.c
+@@ -0,0 +1,158 @@
++/*
++ * ASoC Driver for I-Sabre Q2M
++ *
++ * Author: Satoru Kawase
++ * Modified by: Xiao Qingyong
++ * Update kernel v4.18+ by : Audiophonics
++ * 		Copyright 2018 Audiophonics
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/delay.h>
++#include <linux/fs.h>
++#include <asm/uaccess.h>
++#include <sound/core.h>
++#include <sound/soc.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++
++#include "../codecs/i-sabre-codec.h"
++
++
++static int snd_rpi_i_sabre_q2m_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	unsigned int value;
++
++	/* Device ID */
++	value = snd_soc_component_read(component, ISABRECODEC_REG_01);
++	dev_info(component->card->dev, "Audiophonics Device ID : %02X\n", value);
++
++	/* API revision */
++	value = snd_soc_component_read(component, ISABRECODEC_REG_02);
++	dev_info(component->card->dev, "Audiophonics API revision : %02X\n", value);
++
++	return 0;
++}
++
++static int snd_rpi_i_sabre_q2m_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd     = substream->private_data;
++	struct snd_soc_dai         *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++	int bclk_ratio;
++
++	bclk_ratio = snd_pcm_format_physical_width(
++			params_format(params)) * params_channels(params);
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, bclk_ratio);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_i_sabre_q2m_ops = {
++	.hw_params = snd_rpi_i_sabre_q2m_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(rpi_i_sabre_q2m,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("i-sabre-codec-i2c.1-0048", "i-sabre-codec-dai")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_i_sabre_q2m_dai[] = {
++	{
++		.name           = "I-Sabre Q2M",
++		.stream_name    = "I-Sabre Q2M DAC",
++		.dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
++						| SND_SOC_DAIFMT_CBS_CFS,
++		.init           = snd_rpi_i_sabre_q2m_init,
++		.ops            = &snd_rpi_i_sabre_q2m_ops,
++		SND_SOC_DAILINK_REG(rpi_i_sabre_q2m),
++	}
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_i_sabre_q2m = {
++	.name      = "I-Sabre Q2M DAC",
++	.owner     = THIS_MODULE,
++	.dai_link  = snd_rpi_i_sabre_q2m_dai,
++	.num_links = ARRAY_SIZE(snd_rpi_i_sabre_q2m_dai)
++};
++
++
++static int snd_rpi_i_sabre_q2m_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_rpi_i_sabre_q2m.dev = &pdev->dev;
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_rpi_i_sabre_q2m_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++							"i2s-controller", 0);
++		if (i2s_node) {
++			dai->cpus->dai_name     = NULL;
++			dai->cpus->of_node      = i2s_node;
++			dai->platforms->name    = NULL;
++			dai->platforms->of_node = i2s_node;
++		} else {
++			dev_err(&pdev->dev,
++			    "Property 'i2s-controller' missing or invalid\n");
++			return (-EINVAL);
++		}
++
++		dai->name        = "I-Sabre Q2M";
++		dai->stream_name = "I-Sabre Q2M DAC";
++		dai->dai_fmt     = SND_SOC_DAIFMT_I2S
++					| SND_SOC_DAIFMT_NB_NF
++					| SND_SOC_DAIFMT_CBS_CFS;
++	}
++
++	/* Wait for registering codec driver */
++	mdelay(50);
++
++	ret = snd_soc_register_card(&snd_rpi_i_sabre_q2m);
++	if (ret) {
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++	}
++
++	return ret;
++}
++
++static int snd_rpi_i_sabre_q2m_remove(struct platform_device *pdev)
++{
++	return snd_soc_unregister_card(&snd_rpi_i_sabre_q2m);
++}
++
++static const struct of_device_id snd_rpi_i_sabre_q2m_of_match[] = {
++	{ .compatible = "audiophonics,i-sabre-q2m", },
++	{}
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_i_sabre_q2m_of_match);
++
++static struct platform_driver snd_rpi_i_sabre_q2m_driver = {
++	.driver = {
++		.name           = "snd-rpi-i-sabre-q2m",
++		.owner          = THIS_MODULE,
++		.of_match_table = snd_rpi_i_sabre_q2m_of_match,
++	},
++	.probe  = snd_rpi_i_sabre_q2m_probe,
++	.remove = snd_rpi_i_sabre_q2m_remove,
++};
++module_platform_driver(snd_rpi_i_sabre_q2m_driver);
++
++MODULE_DESCRIPTION("ASoC Driver for I-Sabre Q2M");
++MODULE_AUTHOR("Audiophonics <http://www.audiophonics.fr>");
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/sound/soc/bcm/iqaudio-codec.c
+@@ -0,0 +1,274 @@
++/*
++ * ASoC Driver for IQaudIO Raspberry Pi Codec board
++ *
++ * Author:	Gordon Garrity <gordon@iqaudio.com>
++ *		(C) Copyright IQaudio Limited, 2017-2019
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/gpio/consumer.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include <linux/acpi.h>
++#include <linux/slab.h>
++#include "../codecs/da7213.h"
++
++static int pll_out = DA7213_PLL_FREQ_OUT_90316800;
++
++static int snd_rpi_iqaudio_pll_control(struct snd_soc_dapm_widget *w,
++				       struct snd_kcontrol *k, int  event)
++{
++	int ret = 0;
++	struct snd_soc_dapm_context *dapm = w->dapm;
++	struct snd_soc_card *card = dapm->card;
++	struct snd_soc_pcm_runtime *rtd =
++		snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	if (SND_SOC_DAPM_EVENT_OFF(event)) {
++		ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_MCLK, 0,
++					  0);
++		if (ret)
++			dev_err(card->dev, "Failed to bypass PLL: %d\n", ret);
++		/* Allow PLL time to bypass */
++		msleep(100);
++	} else if (SND_SOC_DAPM_EVENT_ON(event)) {
++		ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0,
++					  pll_out);
++		if (ret)
++			dev_err(card->dev, "Failed to enable PLL: %d\n", ret);
++		/* Allow PLL time to lock */
++		msleep(100);
++	}
++
++	return ret;
++}
++
++static int snd_rpi_iqaudio_post_dapm_event(struct snd_soc_dapm_widget *w,
++                              struct snd_kcontrol *kcontrol,
++                              int event)
++{
++     switch (event) {
++     case SND_SOC_DAPM_POST_PMU:
++           /* Delay for mic bias ramp */
++           msleep(1000);
++           break;
++     default:
++           break;
++     }
++
++     return 0;
++}
++
++static const struct snd_kcontrol_new dapm_controls[] = {
++	SOC_DAPM_PIN_SWITCH("HP Jack"),
++	SOC_DAPM_PIN_SWITCH("MIC Jack"),
++	SOC_DAPM_PIN_SWITCH("Onboard MIC"),
++	SOC_DAPM_PIN_SWITCH("AUX Jack"),
++};
++
++static const struct snd_soc_dapm_widget dapm_widgets[] = {
++	SND_SOC_DAPM_HP("HP Jack", NULL),
++	SND_SOC_DAPM_MIC("MIC Jack", NULL),
++	SND_SOC_DAPM_MIC("Onboard MIC", NULL),
++	SND_SOC_DAPM_LINE("AUX Jack", NULL),
++	SND_SOC_DAPM_SUPPLY("PLL Control", SND_SOC_NOPM, 0, 0,
++			    snd_rpi_iqaudio_pll_control,
++			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
++	SND_SOC_DAPM_POST("Post Power Up Event", snd_rpi_iqaudio_post_dapm_event),
++};
++
++static const struct snd_soc_dapm_route audio_map[] = {
++	{"HP Jack", NULL, "HPL"},
++	{"HP Jack", NULL, "HPR"},
++	{"HP Jack", NULL, "PLL Control"},
++
++	{"AUXR", NULL, "AUX Jack"},
++	{"AUXL", NULL, "AUX Jack"},
++	{"AUX Jack", NULL, "PLL Control"},
++
++	/* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
++	{"MIC1", NULL, "MIC Jack"},
++	{"MIC Jack", NULL, "PLL Control"},
++	{"MIC2", NULL, "Onboard MIC"},
++	{"Onboard MIC", NULL, "PLL Control"},
++};
++
++/* machine stream operations */
++
++static int snd_rpi_iqaudio_codec_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++	int ret;
++
++	/*
++	 * Disable AUX Jack Pin by default to prevent PLL being enabled at
++	 * startup. This avoids holding the PLL to a fixed SR config for
++	 * subsequent streams.
++	 *
++	 * This pin can still be enabled later, as required by user-space.
++	 */
++	snd_soc_dapm_disable_pin(&rtd->card->dapm, "AUX Jack");
++	snd_soc_dapm_sync(&rtd->card->dapm);
++
++	/* Set bclk ratio to align with codec's BCLK rate */
++	ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
++	if (ret) {
++		dev_err(rtd->dev, "Failed to set CPU BLCK ratio\n");
++		return ret;
++	}
++
++	/* Set MCLK frequency to codec, onboard 11.2896MHz clock */
++	return snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK, 11289600,
++				      SND_SOC_CLOCK_OUT);
++}
++
++static int snd_rpi_iqaudio_codec_hw_params(struct snd_pcm_substream *substream,
++					   struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	unsigned int samplerate = params_rate(params);
++
++	switch (samplerate) {
++	case  8000:
++	case 16000:
++	case 32000:
++	case 48000:
++	case 96000:
++		pll_out = DA7213_PLL_FREQ_OUT_98304000;
++		return 0;
++	case 44100:
++	case 88200:
++		pll_out = DA7213_PLL_FREQ_OUT_90316800;
++		return 0;
++	default:
++		dev_err(rtd->dev,"Unsupported samplerate %d\n", samplerate);
++		return -EINVAL;
++	}
++}
++
++static const struct snd_soc_ops snd_rpi_iqaudio_codec_ops = {
++	.hw_params = snd_rpi_iqaudio_codec_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(rpi_iqaudio,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("da7213.1-001a", "da7213-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_iqaudio_codec_dai[] = {
++{
++	.dai_fmt 		= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				  SND_SOC_DAIFMT_CBM_CFM,
++	.init			= snd_rpi_iqaudio_codec_init,
++	.ops			= &snd_rpi_iqaudio_codec_ops,
++	.symmetric_rate	= 1,
++	.symmetric_channels	= 1,
++	.symmetric_sample_bits	= 1,
++	SND_SOC_DAILINK_REG(rpi_iqaudio),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_iqaudio_codec = {
++	.owner			= THIS_MODULE,
++	.dai_link		= snd_rpi_iqaudio_codec_dai,
++	.num_links		= ARRAY_SIZE(snd_rpi_iqaudio_codec_dai),
++	.controls		= dapm_controls,
++	.num_controls		= ARRAY_SIZE(dapm_controls),
++	.dapm_widgets		= dapm_widgets,
++	.num_dapm_widgets	= ARRAY_SIZE(dapm_widgets),
++	.dapm_routes		= audio_map,
++	.num_dapm_routes	= ARRAY_SIZE(audio_map),
++};
++
++static int snd_rpi_iqaudio_codec_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_rpi_iqaudio_codec.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_card *card = &snd_rpi_iqaudio_codec;
++		struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_codec_dai[0];
++
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					    "i2s-controller", 0);
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++
++		if (of_property_read_string(pdev->dev.of_node, "card_name",
++					    &card->name))
++			card->name = "IQaudIOCODEC";
++
++		if (of_property_read_string(pdev->dev.of_node, "dai_name",
++					    &dai->name))
++			dai->name = "IQaudIO CODEC";
++
++		if (of_property_read_string(pdev->dev.of_node,
++					"dai_stream_name", &dai->stream_name))
++			dai->stream_name = "IQaudIO CODEC HiFi v1.2";
++
++	}
++
++	ret = snd_soc_register_card(&snd_rpi_iqaudio_codec);
++	if (ret) {
++		if (ret != -EPROBE_DEFER)
++			dev_err(&pdev->dev,
++				"snd_soc_register_card() failed: %d\n", ret);
++		return ret;
++	}
++
++	return 0;
++}
++
++static int snd_rpi_iqaudio_codec_remove(struct platform_device *pdev)
++{
++	return snd_soc_unregister_card(&snd_rpi_iqaudio_codec);
++}
++
++static const struct of_device_id iqaudio_of_match[] = {
++	{ .compatible = "iqaudio,iqaudio-codec", },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, iqaudio_of_match);
++
++static struct platform_driver snd_rpi_iqaudio_codec_driver = {
++	.driver = {
++		.name   = "snd-rpi-iqaudio-codec",
++		.owner  = THIS_MODULE,
++		.of_match_table = iqaudio_of_match,
++	},
++	.probe          = snd_rpi_iqaudio_codec_probe,
++	.remove         = snd_rpi_iqaudio_codec_remove,
++};
++
++
++
++module_platform_driver(snd_rpi_iqaudio_codec_driver);
++
++MODULE_AUTHOR("Gordon Garrity <gordon@iqaudio.com>");
++MODULE_DESCRIPTION("ASoC Driver for IQaudIO CODEC");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/iqaudio-dac.c
+@@ -0,0 +1,223 @@
++/*
++ * ASoC Driver for IQaudIO DAC
++ *
++ * Author:	Florian Meier <florian.meier@koalo.de>
++ *		Copyright 2013
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/gpio/consumer.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++static bool digital_gain_0db_limit = true;
++
++static struct gpio_desc *mute_gpio;
++
++static int snd_rpi_iqaudio_dac_init(struct snd_soc_pcm_runtime *rtd)
++{
++	if (digital_gain_0db_limit)
++	{
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++	}
++
++	return 0;
++}
++
++static void snd_rpi_iqaudio_gpio_mute(struct snd_soc_card *card)
++{
++	if (mute_gpio) {
++		dev_info(card->dev, "%s: muting amp using GPIO22\n",
++			 __func__);
++		gpiod_set_value_cansleep(mute_gpio, 0);
++	}
++}
++
++static void snd_rpi_iqaudio_gpio_unmute(struct snd_soc_card *card)
++{
++	if (mute_gpio) {
++		dev_info(card->dev, "%s: un-muting amp using GPIO22\n",
++			 __func__);
++		gpiod_set_value_cansleep(mute_gpio, 1);
++	}
++}
++
++static int snd_rpi_iqaudio_set_bias_level(struct snd_soc_card *card,
++	struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level)
++{
++	struct snd_soc_pcm_runtime *rtd;
++	struct snd_soc_dai *codec_dai;
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	if (dapm->dev != codec_dai->dev)
++		return 0;
++
++	switch (level) {
++	case SND_SOC_BIAS_PREPARE:
++		if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
++			break;
++
++		/* UNMUTE AMP */
++		snd_rpi_iqaudio_gpio_unmute(card);
++
++		break;
++	case SND_SOC_BIAS_STANDBY:
++		if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
++			break;
++
++		/* MUTE AMP */
++		snd_rpi_iqaudio_gpio_mute(card);
++
++		break;
++	default:
++		break;
++	}
++
++	return 0;
++}
++
++SND_SOC_DAILINK_DEFS(hifi,
++        DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++        DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004c", "pcm512x-hifi")),
++        DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_iqaudio_dac_dai[] = {
++{
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	.init		= snd_rpi_iqaudio_dac_init,
++	SND_SOC_DAILINK_REG(hifi),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_iqaudio_dac = {
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_rpi_iqaudio_dac_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_iqaudio_dac_dai),
++};
++
++static int snd_rpi_iqaudio_dac_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	bool gpio_unmute = false;
++
++	snd_rpi_iqaudio_dac.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_card *card = &snd_rpi_iqaudio_dac;
++		struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_dac_dai[0];
++		bool auto_gpio_mute = false;
++
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					    "i2s-controller", 0);
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++
++		digital_gain_0db_limit = !of_property_read_bool(
++			pdev->dev.of_node, "iqaudio,24db_digital_gain");
++
++		if (of_property_read_string(pdev->dev.of_node, "card_name",
++					    &card->name))
++			card->name = "IQaudIODAC";
++
++		if (of_property_read_string(pdev->dev.of_node, "dai_name",
++					    &dai->name))
++			dai->name = "IQaudIO DAC";
++
++		if (of_property_read_string(pdev->dev.of_node,
++					"dai_stream_name", &dai->stream_name))
++			dai->stream_name = "IQaudIO DAC HiFi";
++
++		/* gpio_unmute - one time unmute amp using GPIO */
++		gpio_unmute = of_property_read_bool(pdev->dev.of_node,
++						    "iqaudio-dac,unmute-amp");
++
++		/* auto_gpio_mute - mute/unmute amp using GPIO */
++		auto_gpio_mute = of_property_read_bool(pdev->dev.of_node,
++						"iqaudio-dac,auto-mute-amp");
++
++		if (auto_gpio_mute || gpio_unmute) {
++			mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute",
++							    GPIOD_OUT_LOW);
++			if (IS_ERR(mute_gpio)) {
++				ret = PTR_ERR(mute_gpio);
++				dev_err(&pdev->dev,
++					"Failed to get mute gpio: %d\n", ret);
++				return ret;
++			}
++
++			if (auto_gpio_mute && mute_gpio)
++				snd_rpi_iqaudio_dac.set_bias_level =
++						snd_rpi_iqaudio_set_bias_level;
++		}
++	}
++
++	ret = snd_soc_register_card(&snd_rpi_iqaudio_dac);
++	if (ret) {
++		if (ret != -EPROBE_DEFER)
++			dev_err(&pdev->dev,
++				"snd_soc_register_card() failed: %d\n", ret);
++		return ret;
++	}
++
++	if (gpio_unmute && mute_gpio)
++		snd_rpi_iqaudio_gpio_unmute(&snd_rpi_iqaudio_dac);
++
++	return 0;
++}
++
++static int snd_rpi_iqaudio_dac_remove(struct platform_device *pdev)
++{
++	snd_rpi_iqaudio_gpio_mute(&snd_rpi_iqaudio_dac);
++
++	return snd_soc_unregister_card(&snd_rpi_iqaudio_dac);
++}
++
++static const struct of_device_id iqaudio_of_match[] = {
++	{ .compatible = "iqaudio,iqaudio-dac", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, iqaudio_of_match);
++
++static struct platform_driver snd_rpi_iqaudio_dac_driver = {
++	.driver = {
++		.name   = "snd-rpi-iqaudio-dac",
++		.owner  = THIS_MODULE,
++		.of_match_table = iqaudio_of_match,
++	},
++	.probe          = snd_rpi_iqaudio_dac_probe,
++	.remove         = snd_rpi_iqaudio_dac_remove,
++};
++
++module_platform_driver(snd_rpi_iqaudio_dac_driver);
++
++MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
++MODULE_DESCRIPTION("ASoC Driver for IQAudio DAC");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/justboom-both.c
+@@ -0,0 +1,266 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * rpi--wm8804.c -- ALSA SoC Raspberry Pi soundcard.
++ *
++ * Authors: Johannes Krude <johannes@krude.de
++ *
++ * Driver for when connecting simultaneously justboom-digi and justboom-dac
++ *
++ * Based upon code from:
++ * justboom-digi.c
++ * by Milan Neskovic <info@justboom.co>
++ * justboom-dac.c
++ * by Milan Neskovic <info@justboom.co>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include "../codecs/wm8804.h"
++#include "../codecs/pcm512x.h"
++
++
++static bool digital_gain_0db_limit = true;
++
++static int snd_rpi_justboom_both_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *digi = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 1)->component;
++
++	/* enable  TX output */
++	snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x4, 0x0);
++
++	snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08);
++	snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
++	snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++
++	if (digital_gain_0db_limit) {
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume",
++									207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n",
++									ret);
++	}
++
++	return 0;
++}
++
++static int snd_rpi_justboom_both_hw_params(struct snd_pcm_substream *substream,
++				       struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++	struct snd_soc_component *digi = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++
++	int sysclk = 27000000; /* This is fixed on this board */
++
++	long mclk_freq    = 0;
++	int mclk_div      = 1;
++	int sampling_freq = 1;
++
++	int ret;
++
++	int samplerate = params_rate(params);
++
++	if (samplerate <= 96000) {
++		mclk_freq = samplerate*256;
++		mclk_div  = WM8804_MCLKDIV_256FS;
++	} else {
++		mclk_freq = samplerate*128;
++		mclk_div  = WM8804_MCLKDIV_128FS;
++	}
++
++	switch (samplerate) {
++	case 32000:
++		sampling_freq = 0x03;
++		break;
++	case 44100:
++		sampling_freq = 0x00;
++		break;
++	case 48000:
++		sampling_freq = 0x02;
++		break;
++	case 88200:
++		sampling_freq = 0x08;
++		break;
++	case 96000:
++		sampling_freq = 0x0a;
++		break;
++	case 176400:
++		sampling_freq = 0x0c;
++		break;
++	case 192000:
++		sampling_freq = 0x0e;
++		break;
++	default:
++		dev_err(rtd->card->dev,
++		"Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
++		samplerate);
++	}
++
++	snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
++	snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
++
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
++					sysclk, SND_SOC_CLOCK_OUT);
++	if (ret < 0) {
++		dev_err(rtd->card->dev,
++		"Failed to set WM8804 SYSCLK: %d\n", ret);
++		return ret;
++	}
++
++	/* Enable TX output */
++	snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x4, 0x0);
++
++	/* Power on */
++	snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x9, 0);
++
++	/* set sampling frequency status bits */
++	snd_soc_component_update_bits(digi, WM8804_SPDTX4, 0x0f, sampling_freq);
++
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
++}
++
++static int snd_rpi_justboom_both_startup(struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *digi = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 1)->component;
++
++	/* turn on digital output */
++	snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x3c, 0x00);
++
++	snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
++
++	return 0;
++}
++
++static void snd_rpi_justboom_both_shutdown(struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *digi = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_component *dac = asoc_rtd_to_codec(rtd, 1)->component;
++
++	snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
++
++	/* turn off output */
++	snd_soc_component_update_bits(digi, WM8804_PWRDN, 0x3c, 0x3c);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_justboom_both_ops = {
++	.hw_params = snd_rpi_justboom_both_hw_params,
++	.startup   = snd_rpi_justboom_both_startup,
++	.shutdown  = snd_rpi_justboom_both_shutdown,
++};
++
++SND_SOC_DAILINK_DEFS(rpi_justboom_both,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi"),
++			   COMP_CODEC("wm8804.1-003b", "wm8804-spdif")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_justboom_both_dai[] = {
++{
++	.name           = "JustBoom Digi",
++	.stream_name    = "JustBoom Digi HiFi",
++	.dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++					SND_SOC_DAIFMT_CBM_CFM,
++	.ops            = &snd_rpi_justboom_both_ops,
++	.init           = snd_rpi_justboom_both_init,
++	SND_SOC_DAILINK_REG(rpi_justboom_both),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_justboom_both = {
++	.name             = "snd_rpi_justboom_both",
++	.driver_name      = "JustBoomBoth",
++	.owner            = THIS_MODULE,
++	.dai_link         = snd_rpi_justboom_both_dai,
++	.num_links        = ARRAY_SIZE(snd_rpi_justboom_both_dai),
++};
++
++static int snd_rpi_justboom_both_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	struct snd_soc_card *card = &snd_rpi_justboom_both;
++
++	snd_rpi_justboom_both.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai = &snd_rpi_justboom_both_dai[0];
++
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					    "i2s-controller", 0);
++
++		if (i2s_node) {
++			int i;
++
++			for (i = 0; i < card->num_links; i++) {
++				dai->cpus->dai_name = NULL;
++				dai->cpus->of_node = i2s_node;
++				dai->platforms->name = NULL;
++				dai->platforms->of_node = i2s_node;
++			}
++		}
++
++		digital_gain_0db_limit = !of_property_read_bool(
++			pdev->dev.of_node, "justboom,24db_digital_gain");
++	}
++
++	ret = snd_soc_register_card(card);
++	if (ret && ret != -EPROBE_DEFER) {
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++	}
++
++	return ret;
++}
++
++static int snd_rpi_justboom_both_remove(struct platform_device *pdev)
++{
++	return snd_soc_unregister_card(&snd_rpi_justboom_both);
++}
++
++static const struct of_device_id snd_rpi_justboom_both_of_match[] = {
++	{ .compatible = "justboom,justboom-both", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_justboom_both_of_match);
++
++static struct platform_driver snd_rpi_justboom_both_driver = {
++	.driver = {
++		.name   = "snd-rpi-justboom-both",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_justboom_both_of_match,
++	},
++	.probe          = snd_rpi_justboom_both_probe,
++	.remove         = snd_rpi_justboom_both_remove,
++};
++
++module_platform_driver(snd_rpi_justboom_both_driver);
++
++MODULE_AUTHOR("Johannes Krude <johannes@krude.de>");
++MODULE_DESCRIPTION("ASoC Driver for simultaneous use of JustBoom PI Digi & DAC HAT Sound Cards");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/justboom-dac.c
+@@ -0,0 +1,147 @@
++/*
++ * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card
++ *
++ * Author:	Milan Neskovic
++ *		Copyright 2016
++ *		based on code by Daniel Matuschek <info@crazy-audio.com>
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include "../codecs/pcm512x.h"
++
++static bool digital_gain_0db_limit = true;
++
++static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
++
++	if (digital_gain_0db_limit)
++	{
++		int ret;
++		struct snd_soc_card *card = rtd->card;
++
++		ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
++		if (ret < 0)
++			dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++	}
++
++	return 0;
++}
++
++static int snd_rpi_justboom_dac_startup(struct snd_pcm_substream *substream) {
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
++	return 0;
++}
++
++static void snd_rpi_justboom_dac_shutdown(struct snd_pcm_substream *substream) {
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_justboom_dac_ops = {
++	.startup = snd_rpi_justboom_dac_startup,
++	.shutdown = snd_rpi_justboom_dac_shutdown,
++};
++
++SND_SOC_DAILINK_DEFS(hifi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = {
++{
++	.name		= "JustBoom DAC",
++	.stream_name	= "JustBoom DAC HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	.ops		= &snd_rpi_justboom_dac_ops,
++	.init		= snd_rpi_justboom_dac_init,
++	SND_SOC_DAILINK_REG(hifi),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_justboom_dac = {
++	.name         = "snd_rpi_justboom_dac",
++	.driver_name  = "JustBoomDac",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_rpi_justboom_dac_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_justboom_dac_dai),
++};
++
++static int snd_rpi_justboom_dac_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_rpi_justboom_dac.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++	    struct device_node *i2s_node;
++	    struct snd_soc_dai_link *dai = &snd_rpi_justboom_dac_dai[0];
++	    i2s_node = of_parse_phandle(pdev->dev.of_node,
++					"i2s-controller", 0);
++
++	    if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++	    }
++
++	    digital_gain_0db_limit = !of_property_read_bool(
++			pdev->dev.of_node, "justboom,24db_digital_gain");
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_justboom_dac);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_rpi_justboom_dac_of_match[] = {
++	{ .compatible = "justboom,justboom-dac", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match);
++
++static struct platform_driver snd_rpi_justboom_dac_driver = {
++	.driver = {
++		.name   = "snd-rpi-justboom-dac",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_justboom_dac_of_match,
++	},
++	.probe          = snd_rpi_justboom_dac_probe,
++};
++
++module_platform_driver(snd_rpi_justboom_dac_driver);
++
++MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
++MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/pifi-40.c
+@@ -0,0 +1,283 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * ALSA ASoC Machine Driver for PiFi-40
++ *
++ * Author:	David Knell <david.knell@gmail.com)
++ *		based on code by Daniel Matuschek <info@crazy-audio.com>
++ *		based on code by Florian Meier <florian.meier@koalo.de>
++ * Copyright (C) 2020
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/gpio/consumer.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <linux/firmware.h>
++#include <linux/delay.h>
++#include <sound/tlv.h>
++
++static struct gpio_desc *pdn_gpio;
++static int vol = 0x30;
++
++// Volume control
++static int pifi_40_vol_get(struct snd_kcontrol *kcontrol,
++			   struct snd_ctl_elem_value *ucontrol)
++{
++	ucontrol->value.integer.value[0] = vol;
++	ucontrol->value.integer.value[1] = vol;
++	return 0;
++}
++
++static int pifi_40_vol_set(struct snd_kcontrol *kcontrol,
++			   struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_pcm_runtime *rtd;
++	unsigned int v = ucontrol->value.integer.value[0];
++	struct snd_soc_component *dac[2];
++
++	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
++	dac[0] = asoc_rtd_to_codec(rtd, 0)->component;
++	dac[1] = asoc_rtd_to_codec(rtd, 1)->component;
++
++	snd_soc_component_write(dac[0], 0x07, 255 - v);
++	snd_soc_component_write(dac[1], 0x07, 255 - v);
++
++	vol = v;
++	return 1;
++}
++
++static const DECLARE_TLV_DB_SCALE(digital_tlv_master, -10350, 50, 1);
++static const struct snd_kcontrol_new pifi_40_controls[] = {
++	SOC_DOUBLE_R_EXT_TLV("Master Volume", 0x00, 0x01,
++			     0x00, // Min
++			     0xff, // Max
++			     0x01, // Invert
++			     pifi_40_vol_get, pifi_40_vol_set,
++			     digital_tlv_master)
++};
++
++static const char * const codec_ctl_pfx[] = { "Left", "Right" };
++
++static const char * const codec_ctl_name[] = { "Master Volume",
++					"Speaker Volume",
++					"Speaker Switch" };
++
++static int snd_pifi_40_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_card *card = rtd->card;
++	struct snd_soc_component *dac[2];
++	struct snd_kcontrol *kctl;
++	int i, j;
++
++	dac[0] = asoc_rtd_to_codec(rtd, 0)->component;
++	dac[1] = asoc_rtd_to_codec(rtd, 1)->component;
++
++
++	// Set up cards - pulse power down first
++	gpiod_set_value_cansleep(pdn_gpio, 1);
++	usleep_range(1000, 10000);
++	gpiod_set_value_cansleep(pdn_gpio, 0);
++	usleep_range(20000, 30000);
++
++	// Oscillator trim
++	snd_soc_component_write(dac[0], 0x1b, 0);
++	snd_soc_component_write(dac[1], 0x1b, 0);
++	usleep_range(60000, 80000);
++
++	// Common setup
++	for (i = 0; i < 2; i++) {
++		// MCLK at 64fs, sample rate 44.1 or 48kHz
++		snd_soc_component_write(dac[i], 0x00, 0x60);
++
++		// Set up for PBTL
++		snd_soc_component_write(dac[i], 0x19, 0x3A);
++		snd_soc_component_write(dac[i], 0x25, 0x01103245);
++
++		// Master vol to -10db
++		snd_soc_component_write(dac[i], 0x07, 0x44);
++	}
++	// Inputs set to L and R respectively
++	snd_soc_component_write(dac[0], 0x20, 0x00017772);
++	snd_soc_component_write(dac[1], 0x20, 0x00107772);
++
++	// Remove codec controls
++	for (i = 0; i < 2; i++) {
++		for (j = 0; j < 3; j++) {
++			char cname[256];
++
++			sprintf(cname, "%s %s", codec_ctl_pfx[i],
++				codec_ctl_name[j]);
++			kctl = snd_soc_card_get_kcontrol(card, cname);
++			if (!kctl) {
++				pr_info("Control %s not found\n",
++				       cname);
++			} else {
++				kctl->vd[0].access =
++					SNDRV_CTL_ELEM_ACCESS_READWRITE;
++				snd_ctl_remove(card->snd_card, kctl);
++			}
++		}
++	}
++
++	return 0;
++}
++
++static int snd_pifi_40_hw_params(struct snd_pcm_substream *substream,
++				 struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++	unsigned int sample_bits;
++
++	sample_bits = snd_pcm_format_physical_width(params_format(params));
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
++}
++
++static struct snd_soc_ops snd_pifi_40_ops = { .hw_params =
++						      snd_pifi_40_hw_params };
++
++static struct snd_soc_dai_link_component pifi_40_codecs[] = {
++	{
++		.dai_name = "tas571x-hifi",
++	},
++	{
++		.dai_name = "tas571x-hifi",
++	},
++};
++
++SND_SOC_DAILINK_DEFS(
++	pifi_40_dai, DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("tas571x.1-001a", "tas571x-hifi"),
++			   COMP_CODEC("tas571x.1-001b", "tas571x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_pifi_40_dai[] = {
++	{
++		.name = "PiFi40",
++		.stream_name = "PiFi40",
++		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++			   SND_SOC_DAIFMT_CBS_CFS,
++		.ops = &snd_pifi_40_ops,
++		.init = snd_pifi_40_init,
++		SND_SOC_DAILINK_REG(pifi_40_dai),
++	},
++};
++
++// Machine driver
++static struct snd_soc_card snd_pifi_40 = {
++	.name = "PiFi40",
++	.owner = THIS_MODULE,
++	.dai_link = snd_pifi_40_dai,
++	.num_links = ARRAY_SIZE(snd_pifi_40_dai),
++	.controls = pifi_40_controls,
++	.num_controls = ARRAY_SIZE(pifi_40_controls)
++};
++
++static void snd_pifi_40_pdn(struct snd_soc_card *card, int on)
++{
++	if (pdn_gpio)
++		gpiod_set_value_cansleep(pdn_gpio, on ? 0 : 1);
++}
++
++static int snd_pifi_40_probe(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = &snd_pifi_40;
++	int ret = 0, i = 0;
++
++	card->dev = &pdev->dev;
++	platform_set_drvdata(pdev, &snd_pifi_40);
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai;
++
++		dai = &snd_pifi_40_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller",
++					    0);
++		if (i2s_node) {
++			for (i = 0; i < card->num_links; i++) {
++				dai->cpus->dai_name = NULL;
++				dai->cpus->of_node = i2s_node;
++				dai->platforms->name = NULL;
++				dai->platforms->of_node = i2s_node;
++			}
++		}
++
++		pifi_40_codecs[0].of_node =
++			of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
++		pifi_40_codecs[1].of_node =
++			of_parse_phandle(pdev->dev.of_node, "audio-codec", 1);
++		if (!pifi_40_codecs[0].of_node || !pifi_40_codecs[1].of_node) {
++			dev_err(&pdev->dev,
++				"Property 'audio-codec' missing or invalid\n");
++			return -EINVAL;
++		}
++
++		pdn_gpio = devm_gpiod_get_optional(&pdev->dev, "pdn",
++						   GPIOD_OUT_LOW);
++		if (IS_ERR(pdn_gpio)) {
++			ret = PTR_ERR(pdn_gpio);
++			dev_err(&pdev->dev, "failed to get pdn gpio: %d\n",
++				ret);
++			return ret;
++		}
++
++		ret = snd_soc_register_card(&snd_pifi_40);
++		if (ret < 0) {
++			dev_err(&pdev->dev,
++				"snd_soc_register_card() failed: %d\n", ret);
++			return ret;
++		}
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++static int snd_pifi_40_remove(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = platform_get_drvdata(pdev);
++
++	kfree(&card->drvdata);
++	snd_pifi_40_pdn(&snd_pifi_40, 0);
++	return snd_soc_unregister_card(&snd_pifi_40);
++}
++
++static const struct of_device_id snd_pifi_40_of_match[] = {
++	{
++		.compatible = "pifi,pifi-40",
++	},
++	{ /* sentinel */ },
++};
++
++MODULE_DEVICE_TABLE(of, snd_pifi_40_of_match);
++
++static struct platform_driver snd_pifi_40_driver = {
++	.driver = {
++		.name = "snd-pifi-40",
++		.owner = THIS_MODULE,
++		.of_match_table = snd_pifi_40_of_match,
++	},
++	.probe = snd_pifi_40_probe,
++	.remove = snd_pifi_40_remove,
++};
++
++module_platform_driver(snd_pifi_40_driver);
++
++MODULE_AUTHOR("David Knell <david.knell@gmail.com>");
++MODULE_DESCRIPTION("ALSA ASoC Machine Driver for PiFi-40");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/pisound.c
+@@ -0,0 +1,1240 @@
++/*
++ * Pisound Linux kernel module.
++ * Copyright (C) 2016-2020  Vilniaus Blokas UAB, https://blokas.io/pisound
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; version 2 of the
++ * License.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
++ * MA  02110-1301, USA.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/gpio.h>
++#include <linux/kobject.h>
++#include <linux/sysfs.h>
++#include <linux/delay.h>
++#include <linux/spi/spi.h>
++#include <linux/interrupt.h>
++#include <linux/kfifo.h>
++#include <linux/jiffies.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++#include <sound/rawmidi.h>
++#include <sound/asequencer.h>
++#include <sound/control.h>
++
++static int pisnd_spi_init(struct device *dev);
++static void pisnd_spi_uninit(void);
++
++static void pisnd_spi_flush(void);
++static void pisnd_spi_start(void);
++static uint8_t pisnd_spi_recv(uint8_t *buffer, uint8_t length);
++
++typedef void (*pisnd_spi_recv_cb)(void *data);
++static void pisnd_spi_set_callback(pisnd_spi_recv_cb cb, void *data);
++
++static const char *pisnd_spi_get_serial(void);
++static const char *pisnd_spi_get_id(void);
++static const char *pisnd_spi_get_fw_version(void);
++static const char *pisnd_spi_get_hw_version(void);
++
++static int pisnd_midi_init(struct snd_card *card);
++static void pisnd_midi_uninit(void);
++
++enum task_e {
++	TASK_PROCESS = 0,
++};
++
++static void pisnd_schedule_process(enum task_e task);
++
++#define PISOUND_LOG_PREFIX "pisound: "
++
++#ifdef PISOUND_DEBUG
++#	define printd(...) pr_alert(PISOUND_LOG_PREFIX __VA_ARGS__)
++#else
++#	define printd(...) do {} while (0)
++#endif
++
++#define printe(...) pr_err(PISOUND_LOG_PREFIX __VA_ARGS__)
++#define printi(...) pr_info(PISOUND_LOG_PREFIX __VA_ARGS__)
++
++static struct snd_rawmidi *g_rmidi;
++static struct snd_rawmidi_substream *g_midi_output_substream;
++
++static int pisnd_output_open(struct snd_rawmidi_substream *substream)
++{
++	g_midi_output_substream = substream;
++	return 0;
++}
++
++static int pisnd_output_close(struct snd_rawmidi_substream *substream)
++{
++	g_midi_output_substream = NULL;
++	return 0;
++}
++
++static void pisnd_output_trigger(
++	struct snd_rawmidi_substream *substream,
++	int up
++	)
++{
++	if (substream != g_midi_output_substream) {
++		printe("MIDI output trigger called for an unexpected stream!");
++		return;
++	}
++
++	if (!up)
++		return;
++
++	pisnd_spi_start();
++}
++
++static void pisnd_output_drain(struct snd_rawmidi_substream *substream)
++{
++	pisnd_spi_flush();
++}
++
++static int pisnd_input_open(struct snd_rawmidi_substream *substream)
++{
++	return 0;
++}
++
++static int pisnd_input_close(struct snd_rawmidi_substream *substream)
++{
++	return 0;
++}
++
++static void pisnd_midi_recv_callback(void *substream)
++{
++	uint8_t data[128];
++	uint8_t n = 0;
++
++	while ((n = pisnd_spi_recv(data, sizeof(data)))) {
++		int res = snd_rawmidi_receive(substream, data, n);
++		(void)res;
++		printd("midi recv %u bytes, res = %d\n", n, res);
++	}
++}
++
++static void pisnd_input_trigger(struct snd_rawmidi_substream *substream, int up)
++{
++	if (up) {
++		pisnd_spi_set_callback(pisnd_midi_recv_callback, substream);
++		pisnd_schedule_process(TASK_PROCESS);
++	} else {
++		pisnd_spi_set_callback(NULL, NULL);
++	}
++}
++
++static struct snd_rawmidi_ops pisnd_output_ops = {
++	.open = pisnd_output_open,
++	.close = pisnd_output_close,
++	.trigger = pisnd_output_trigger,
++	.drain = pisnd_output_drain,
++};
++
++static struct snd_rawmidi_ops pisnd_input_ops = {
++	.open = pisnd_input_open,
++	.close = pisnd_input_close,
++	.trigger = pisnd_input_trigger,
++};
++
++static void pisnd_get_port_info(
++	struct snd_rawmidi *rmidi,
++	int number,
++	struct snd_seq_port_info *seq_port_info
++	)
++{
++	seq_port_info->type =
++		SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
++		SNDRV_SEQ_PORT_TYPE_HARDWARE |
++		SNDRV_SEQ_PORT_TYPE_PORT;
++	seq_port_info->midi_voices = 0;
++}
++
++static struct snd_rawmidi_global_ops pisnd_global_ops = {
++	.get_port_info = pisnd_get_port_info,
++};
++
++static int pisnd_midi_init(struct snd_card *card)
++{
++	int err;
++
++	g_midi_output_substream = NULL;
++
++	err = snd_rawmidi_new(card, "pisound MIDI", 0, 1, 1, &g_rmidi);
++
++	if (err < 0) {
++		printe("snd_rawmidi_new failed: %d\n", err);
++		return err;
++	}
++
++	strcpy(g_rmidi->name, "pisound MIDI ");
++	strcat(g_rmidi->name, pisnd_spi_get_serial());
++
++	g_rmidi->info_flags =
++		SNDRV_RAWMIDI_INFO_OUTPUT |
++		SNDRV_RAWMIDI_INFO_INPUT |
++		SNDRV_RAWMIDI_INFO_DUPLEX;
++
++	g_rmidi->ops = &pisnd_global_ops;
++
++	g_rmidi->private_data = (void *)0;
++
++	snd_rawmidi_set_ops(
++		g_rmidi,
++		SNDRV_RAWMIDI_STREAM_OUTPUT,
++		&pisnd_output_ops
++		);
++
++	snd_rawmidi_set_ops(
++		g_rmidi,
++		SNDRV_RAWMIDI_STREAM_INPUT,
++		&pisnd_input_ops
++		);
++
++	return 0;
++}
++
++static void pisnd_midi_uninit(void)
++{
++}
++
++static void *g_recvData;
++static pisnd_spi_recv_cb g_recvCallback;
++
++#define FIFO_SIZE 4096
++
++static char g_serial_num[11];
++static char g_id[25];
++enum { MAX_VERSION_STR_LEN = 6 };
++static char g_fw_version[MAX_VERSION_STR_LEN];
++static char g_hw_version[MAX_VERSION_STR_LEN];
++
++static uint8_t g_ledFlashDuration;
++static bool    g_ledFlashDurationChanged;
++
++DEFINE_KFIFO(spi_fifo_in,  uint8_t, FIFO_SIZE);
++DEFINE_KFIFO(spi_fifo_out, uint8_t, FIFO_SIZE);
++
++static struct gpio_desc *data_available;
++static struct gpio_desc *spi_reset;
++
++static struct spi_device *pisnd_spi_device;
++
++static struct workqueue_struct *pisnd_workqueue;
++static struct work_struct pisnd_work_process;
++
++static void pisnd_work_handler(struct work_struct *work);
++
++static void spi_transfer(const uint8_t *txbuf, uint8_t *rxbuf, int len);
++static uint16_t spi_transfer16(uint16_t val);
++
++static int pisnd_init_workqueues(void)
++{
++	pisnd_workqueue = create_singlethread_workqueue("pisnd_workqueue");
++	INIT_WORK(&pisnd_work_process, pisnd_work_handler);
++
++	return 0;
++}
++
++static void pisnd_uninit_workqueues(void)
++{
++	flush_workqueue(pisnd_workqueue);
++	destroy_workqueue(pisnd_workqueue);
++
++	pisnd_workqueue = NULL;
++}
++
++static bool pisnd_spi_has_more(void)
++{
++	return gpiod_get_value(data_available);
++}
++
++static void pisnd_schedule_process(enum task_e task)
++{
++	if (pisnd_spi_device != NULL &&
++		pisnd_workqueue != NULL &&
++		!work_pending(&pisnd_work_process)
++		) {
++		printd("schedule: has more = %d\n", pisnd_spi_has_more());
++		if (task == TASK_PROCESS)
++			queue_work(pisnd_workqueue, &pisnd_work_process);
++	}
++}
++
++static irqreturn_t data_available_interrupt_handler(int irq, void *dev_id)
++{
++	if (irq == gpiod_to_irq(data_available) && pisnd_spi_has_more()) {
++		printd("schedule from irq\n");
++		pisnd_schedule_process(TASK_PROCESS);
++	}
++
++	return IRQ_HANDLED;
++}
++
++static uint16_t spi_transfer16(uint16_t val)
++{
++	uint8_t txbuf[2];
++	uint8_t rxbuf[2];
++
++	if (!pisnd_spi_device) {
++		printe("pisnd_spi_device null, returning\n");
++		return 0;
++	}
++
++	txbuf[0] = val >> 8;
++	txbuf[1] = val & 0xff;
++
++	spi_transfer(txbuf, rxbuf, sizeof(txbuf));
++
++	printd("received: %02x%02x\n", rxbuf[0], rxbuf[1]);
++
++	return (rxbuf[0] << 8) | rxbuf[1];
++}
++
++static void spi_transfer(const uint8_t *txbuf, uint8_t *rxbuf, int len)
++{
++	int err;
++	struct spi_transfer transfer;
++	struct spi_message msg;
++
++	memset(rxbuf, 0, len);
++
++	if (!pisnd_spi_device) {
++		printe("pisnd_spi_device null, returning\n");
++		return;
++	}
++
++	spi_message_init(&msg);
++
++	memset(&transfer, 0, sizeof(transfer));
++
++	transfer.tx_buf = txbuf;
++	transfer.rx_buf = rxbuf;
++	transfer.len = len;
++	transfer.speed_hz = 150000;
++	transfer.delay.value = 10;
++	transfer.delay.unit = SPI_DELAY_UNIT_USECS;
++
++	spi_message_add_tail(&transfer, &msg);
++
++	err = spi_sync(pisnd_spi_device, &msg);
++
++	if (err < 0) {
++		printe("spi_sync error %d\n", err);
++		return;
++	}
++
++	printd("hasMore %d\n", pisnd_spi_has_more());
++}
++
++static int spi_read_bytes(char *dst, size_t length, uint8_t *bytesRead)
++{
++	uint16_t rx;
++	uint8_t size;
++	uint8_t i;
++
++	memset(dst, 0, length);
++	*bytesRead = 0;
++
++	rx = spi_transfer16(0);
++	if (!(rx >> 8))
++		return -EINVAL;
++
++	size = rx & 0xff;
++
++	if (size > length)
++		return -EINVAL;
++
++	for (i = 0; i < size; ++i) {
++		rx = spi_transfer16(0);
++		if (!(rx >> 8))
++			return -EINVAL;
++
++		dst[i] = rx & 0xff;
++	}
++
++	*bytesRead = i;
++
++	return 0;
++}
++
++static int spi_device_match(struct device *dev, const void *data)
++{
++	struct spi_device *spi = container_of(dev, struct spi_device, dev);
++
++	printd("      %s %s %dkHz %d bits mode=0x%02X\n",
++		spi->modalias, dev_name(dev), spi->max_speed_hz/1000,
++		spi->bits_per_word, spi->mode);
++
++	if (strcmp("pisound-spi", spi->modalias) == 0) {
++		printi("\tFound!\n");
++		return 1;
++	}
++
++	printe("\tNot found!\n");
++	return 0;
++}
++
++static struct spi_device *pisnd_spi_find_device(void)
++{
++	struct device *dev;
++
++	printi("Searching for spi device...\n");
++	dev = bus_find_device(&spi_bus_type, NULL, NULL, spi_device_match);
++	if (dev != NULL)
++		return container_of(dev, struct spi_device, dev);
++	else
++		return NULL;
++}
++
++static void pisnd_work_handler(struct work_struct *work)
++{
++	enum { TRANSFER_SIZE = 4 };
++	enum { PISOUND_OUTPUT_BUFFER_SIZE_MILLIBYTES = 127 * 1000 };
++	enum { MIDI_MILLIBYTES_PER_JIFFIE = (3125 * 1000) / HZ };
++	int out_buffer_used_millibytes = 0;
++	unsigned long now;
++	uint8_t val;
++	uint8_t txbuf[TRANSFER_SIZE];
++	uint8_t rxbuf[TRANSFER_SIZE];
++	uint8_t midibuf[TRANSFER_SIZE];
++	int i, n;
++	bool had_data;
++
++	unsigned long last_transfer_at = jiffies;
++
++	if (work == &pisnd_work_process) {
++		if (pisnd_spi_device == NULL)
++			return;
++
++		do {
++			if (g_midi_output_substream &&
++				kfifo_avail(&spi_fifo_out) >= sizeof(midibuf)) {
++
++				n = snd_rawmidi_transmit_peek(
++					g_midi_output_substream,
++					midibuf, sizeof(midibuf)
++				);
++
++				if (n > 0) {
++					for (i = 0; i < n; ++i)
++						kfifo_put(
++							&spi_fifo_out,
++							midibuf[i]
++							);
++					snd_rawmidi_transmit_ack(
++						g_midi_output_substream,
++						i
++						);
++				}
++			}
++
++			had_data = false;
++			memset(txbuf, 0, sizeof(txbuf));
++			for (i = 0; i < sizeof(txbuf) &&
++				((out_buffer_used_millibytes+1000 <
++				PISOUND_OUTPUT_BUFFER_SIZE_MILLIBYTES) ||
++				g_ledFlashDurationChanged);
++				i += 2) {
++
++				val = 0;
++
++				if (g_ledFlashDurationChanged) {
++					txbuf[i+0] = 0xf0;
++					txbuf[i+1] = g_ledFlashDuration;
++					g_ledFlashDuration = 0;
++					g_ledFlashDurationChanged = false;
++				} else if (kfifo_get(&spi_fifo_out, &val)) {
++					txbuf[i+0] = 0x0f;
++					txbuf[i+1] = val;
++					out_buffer_used_millibytes += 1000;
++				}
++			}
++
++			spi_transfer(txbuf, rxbuf, sizeof(txbuf));
++			/* Estimate the Pisound's MIDI output buffer usage, so
++			 * that we don't overflow it. Space in the buffer should
++			 * be becoming available at the UART MIDI byte transfer
++			 * rate.
++			 */
++			now = jiffies;
++			if (now != last_transfer_at) {
++				out_buffer_used_millibytes -=
++					(now - last_transfer_at) *
++					MIDI_MILLIBYTES_PER_JIFFIE;
++				if (out_buffer_used_millibytes < 0)
++					out_buffer_used_millibytes = 0;
++				last_transfer_at = now;
++			}
++
++			for (i = 0; i < sizeof(rxbuf); i += 2) {
++				if (rxbuf[i]) {
++					kfifo_put(&spi_fifo_in, rxbuf[i+1]);
++					if (kfifo_len(&spi_fifo_in) > 16 &&
++						g_recvCallback)
++						g_recvCallback(g_recvData);
++					had_data = true;
++				}
++			}
++		} while (had_data
++			|| !kfifo_is_empty(&spi_fifo_out)
++			|| pisnd_spi_has_more()
++			|| g_ledFlashDurationChanged
++			|| out_buffer_used_millibytes != 0
++			);
++
++		if (!kfifo_is_empty(&spi_fifo_in) && g_recvCallback)
++			g_recvCallback(g_recvData);
++	}
++}
++
++static int pisnd_spi_gpio_init(struct device *dev)
++{
++	spi_reset = gpiod_get_index(dev, "reset", 1, GPIOD_ASIS);
++	data_available = gpiod_get_index(dev, "data_available", 0, GPIOD_ASIS);
++
++	gpiod_direction_output(spi_reset, 1);
++	gpiod_direction_input(data_available);
++
++	/* Reset the slave. */
++	gpiod_set_value(spi_reset, false);
++	mdelay(1);
++	gpiod_set_value(spi_reset, true);
++
++	/* Give time for spi slave to start. */
++	mdelay(64);
++
++	return 0;
++}
++
++static void pisnd_spi_gpio_uninit(void)
++{
++	gpiod_set_value(spi_reset, false);
++	gpiod_put(spi_reset);
++	spi_reset = NULL;
++
++	gpiod_put(data_available);
++	data_available = NULL;
++}
++
++static int pisnd_spi_gpio_irq_init(struct device *dev)
++{
++	return request_threaded_irq(
++		gpiod_to_irq(data_available), NULL,
++		data_available_interrupt_handler,
++		IRQF_TIMER | IRQF_TRIGGER_RISING | IRQF_ONESHOT,
++		"data_available_int",
++		NULL
++		);
++}
++
++static void pisnd_spi_gpio_irq_uninit(void)
++{
++	free_irq(gpiod_to_irq(data_available), NULL);
++}
++
++static int spi_read_info(void)
++{
++	uint16_t tmp;
++	uint8_t count;
++	uint8_t n;
++	uint8_t i;
++	uint8_t j;
++	char buffer[257];
++	int ret;
++	char *p;
++
++	memset(g_serial_num, 0, sizeof(g_serial_num));
++	memset(g_fw_version, 0, sizeof(g_fw_version));
++	strcpy(g_hw_version, "1.0"); // Assume 1.0 hw version.
++	memset(g_id, 0, sizeof(g_id));
++
++	tmp = spi_transfer16(0);
++
++	if (!(tmp >> 8))
++		return -EINVAL;
++
++	count = tmp & 0xff;
++
++	for (i = 0; i < count; ++i) {
++		memset(buffer, 0, sizeof(buffer));
++		ret = spi_read_bytes(buffer, sizeof(buffer)-1, &n);
++
++		if (ret < 0)
++			return ret;
++
++		switch (i) {
++		case 0:
++			if (n != 2)
++				return -EINVAL;
++
++			snprintf(
++				g_fw_version,
++				MAX_VERSION_STR_LEN,
++				"%x.%02x",
++				buffer[0],
++				buffer[1]
++				);
++
++			g_fw_version[MAX_VERSION_STR_LEN-1] = '\0';
++			break;
++		case 3:
++			if (n != 2)
++				return -EINVAL;
++
++			snprintf(
++				g_hw_version,
++				MAX_VERSION_STR_LEN,
++				"%x.%x",
++				buffer[0],
++				buffer[1]
++			);
++
++			g_hw_version[MAX_VERSION_STR_LEN-1] = '\0';
++			break;
++		case 1:
++			if (n >= sizeof(g_serial_num))
++				return -EINVAL;
++
++			memcpy(g_serial_num, buffer, sizeof(g_serial_num));
++			break;
++		case 2:
++			{
++				if (n*2 >= sizeof(g_id))
++					return -EINVAL;
++
++				p = g_id;
++				for (j = 0; j < n; ++j)
++					p += sprintf(p, "%02x", buffer[j]);
++
++				*p = '\0';
++			}
++			break;
++		default:
++			break;
++		}
++	}
++
++	return 0;
++}
++
++static int pisnd_spi_init(struct device *dev)
++{
++	int ret;
++	struct spi_device *spi;
++
++	memset(g_serial_num, 0, sizeof(g_serial_num));
++	memset(g_id, 0, sizeof(g_id));
++	memset(g_fw_version, 0, sizeof(g_fw_version));
++	memset(g_hw_version, 0, sizeof(g_hw_version));
++
++	spi = pisnd_spi_find_device();
++
++	if (spi != NULL) {
++		printd("initializing spi!\n");
++		pisnd_spi_device = spi;
++		ret = spi_setup(pisnd_spi_device);
++	} else {
++		printe("SPI device not found, deferring!\n");
++		return -EPROBE_DEFER;
++	}
++
++	ret = pisnd_spi_gpio_init(dev);
++
++	if (ret < 0) {
++		printe("SPI GPIO init failed: %d\n", ret);
++		spi_dev_put(pisnd_spi_device);
++		pisnd_spi_device = NULL;
++		pisnd_spi_gpio_uninit();
++		return ret;
++	}
++
++	ret = spi_read_info();
++
++	if (ret < 0) {
++		printe("Reading card info failed: %d\n", ret);
++		spi_dev_put(pisnd_spi_device);
++		pisnd_spi_device = NULL;
++		pisnd_spi_gpio_uninit();
++		return ret;
++	}
++
++	/* Flash the LEDs. */
++	spi_transfer16(0xf008);
++
++	ret = pisnd_spi_gpio_irq_init(dev);
++	if (ret < 0) {
++		printe("SPI irq request failed: %d\n", ret);
++		spi_dev_put(pisnd_spi_device);
++		pisnd_spi_device = NULL;
++		pisnd_spi_gpio_irq_uninit();
++		pisnd_spi_gpio_uninit();
++	}
++
++	ret = pisnd_init_workqueues();
++	if (ret != 0) {
++		printe("Workqueue initialization failed: %d\n", ret);
++		spi_dev_put(pisnd_spi_device);
++		pisnd_spi_device = NULL;
++		pisnd_spi_gpio_irq_uninit();
++		pisnd_spi_gpio_uninit();
++		pisnd_uninit_workqueues();
++		return ret;
++	}
++
++	if (pisnd_spi_has_more()) {
++		printd("data is available, scheduling from init\n");
++		pisnd_schedule_process(TASK_PROCESS);
++	}
++
++	return 0;
++}
++
++static void pisnd_spi_uninit(void)
++{
++	pisnd_uninit_workqueues();
++
++	spi_dev_put(pisnd_spi_device);
++	pisnd_spi_device = NULL;
++
++	pisnd_spi_gpio_irq_uninit();
++	pisnd_spi_gpio_uninit();
++}
++
++static void pisnd_spi_flash_leds(uint8_t duration)
++{
++	g_ledFlashDuration = duration;
++	g_ledFlashDurationChanged = true;
++	printd("schedule from spi_flash_leds\n");
++	pisnd_schedule_process(TASK_PROCESS);
++}
++
++static void pisnd_spi_flush(void)
++{
++	while (!kfifo_is_empty(&spi_fifo_out)) {
++		pisnd_spi_start();
++		flush_workqueue(pisnd_workqueue);
++	}
++}
++
++static void pisnd_spi_start(void)
++{
++	printd("schedule from spi_start\n");
++	pisnd_schedule_process(TASK_PROCESS);
++}
++
++static uint8_t pisnd_spi_recv(uint8_t *buffer, uint8_t length)
++{
++	return kfifo_out(&spi_fifo_in, buffer, length);
++}
++
++static void pisnd_spi_set_callback(pisnd_spi_recv_cb cb, void *data)
++{
++	g_recvData = data;
++	g_recvCallback = cb;
++}
++
++static const char *pisnd_spi_get_serial(void)
++{
++	return g_serial_num;
++}
++
++static const char *pisnd_spi_get_id(void)
++{
++	return g_id;
++}
++
++static const char *pisnd_spi_get_fw_version(void)
++{
++	return g_fw_version;
++}
++
++static const char *pisnd_spi_get_hw_version(void)
++{
++	return g_hw_version;
++}
++
++static const struct of_device_id pisound_of_match[] = {
++	{ .compatible = "blokaslabs,pisound", },
++	{ .compatible = "blokaslabs,pisound-spi", },
++	{},
++};
++
++enum {
++	SWITCH = 0,
++	VOLUME = 1,
++};
++
++static int pisnd_ctl_info(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_info *uinfo)
++{
++	if (kcontrol->private_value == SWITCH) {
++		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
++		uinfo->count = 1;
++		uinfo->value.integer.min = 0;
++		uinfo->value.integer.max = 1;
++		return 0;
++	} else if (kcontrol->private_value == VOLUME) {
++		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
++		uinfo->count = 1;
++		uinfo->value.integer.min = 0;
++		uinfo->value.integer.max = 100;
++		return 0;
++	}
++	return -EINVAL;
++}
++
++static int pisnd_ctl_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	if (kcontrol->private_value == SWITCH) {
++		ucontrol->value.integer.value[0] = 1;
++		return 0;
++	} else if (kcontrol->private_value == VOLUME) {
++		ucontrol->value.integer.value[0] = 100;
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++static struct snd_kcontrol_new pisnd_ctl[] = {
++	{
++		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name = "PCM Playback Switch",
++		.index = 0,
++		.private_value = SWITCH,
++		.access = SNDRV_CTL_ELEM_ACCESS_READ,
++		.info = pisnd_ctl_info,
++		.get = pisnd_ctl_get,
++	},
++	{
++		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name = "PCM Playback Volume",
++		.index = 0,
++		.private_value = VOLUME,
++		.access = SNDRV_CTL_ELEM_ACCESS_READ,
++		.info = pisnd_ctl_info,
++		.get = pisnd_ctl_get,
++	},
++};
++
++static int pisnd_ctl_init(struct snd_card *card)
++{
++	int err, i;
++
++	for (i = 0; i < ARRAY_SIZE(pisnd_ctl); ++i) {
++		err = snd_ctl_add(card, snd_ctl_new1(&pisnd_ctl[i], NULL));
++		if (err < 0)
++			return err;
++	}
++
++	return 0;
++}
++
++static int pisnd_ctl_uninit(void)
++{
++	return 0;
++}
++
++static struct gpio_desc *osr0, *osr1, *osr2;
++static struct gpio_desc *reset;
++static struct gpio_desc *button;
++
++static int pisnd_hw_params(
++	struct snd_pcm_substream *substream,
++	struct snd_pcm_hw_params *params
++	)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++
++	/* Pisound runs on fixed 32 clock counts per channel,
++	 * as generated by the master ADC.
++	 */
++	snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2);
++
++	printd("rate   = %d\n", params_rate(params));
++	printd("ch     = %d\n", params_channels(params));
++	printd("bits   = %u\n",
++		snd_pcm_format_physical_width(params_format(params)));
++	printd("format = %d\n", params_format(params));
++
++	gpiod_set_value(reset, false);
++
++	switch (params_rate(params)) {
++	case 48000:
++		gpiod_set_value(osr0, true);
++		gpiod_set_value(osr1, false);
++		gpiod_set_value(osr2, false);
++		break;
++	case 96000:
++		gpiod_set_value(osr0, true);
++		gpiod_set_value(osr1, false);
++		gpiod_set_value(osr2, true);
++		break;
++	case 192000:
++		gpiod_set_value(osr0, true);
++		gpiod_set_value(osr1, true);
++		gpiod_set_value(osr2, true);
++		break;
++	default:
++		printe("Unsupported rate %u!\n", params_rate(params));
++		return -EINVAL;
++	}
++
++	gpiod_set_value(reset, true);
++
++	return 0;
++}
++
++static unsigned int rates[3] = {
++	48000, 96000, 192000
++};
++
++static struct snd_pcm_hw_constraint_list constraints_rates = {
++	.count = ARRAY_SIZE(rates),
++	.list = rates,
++	.mask = 0,
++};
++
++static int pisnd_startup(struct snd_pcm_substream *substream)
++{
++	int err = snd_pcm_hw_constraint_list(
++		substream->runtime,
++		0,
++		SNDRV_PCM_HW_PARAM_RATE,
++		&constraints_rates
++		);
++
++	if (err < 0)
++		return err;
++
++	err = snd_pcm_hw_constraint_single(
++		substream->runtime,
++		SNDRV_PCM_HW_PARAM_CHANNELS,
++		2
++		);
++
++	if (err < 0)
++		return err;
++
++	err = snd_pcm_hw_constraint_mask64(
++		substream->runtime,
++		SNDRV_PCM_HW_PARAM_FORMAT,
++		SNDRV_PCM_FMTBIT_S16_LE |
++		SNDRV_PCM_FMTBIT_S24_LE |
++		SNDRV_PCM_FMTBIT_S32_LE
++		);
++
++	if (err < 0)
++		return err;
++
++	return 0;
++}
++
++static struct snd_soc_ops pisnd_ops = {
++	.startup = pisnd_startup,
++	.hw_params = pisnd_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(pisnd,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_DUMMY()),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link pisnd_dai[] = {
++	{
++		.name           = "pisound",
++		.stream_name    = "pisound",
++		.dai_fmt        =
++			SND_SOC_DAIFMT_I2S |
++			SND_SOC_DAIFMT_NB_NF |
++			SND_SOC_DAIFMT_CBM_CFM,
++		.ops            = &pisnd_ops,
++		SND_SOC_DAILINK_REG(pisnd),
++	},
++};
++
++static int pisnd_card_probe(struct snd_soc_card *card)
++{
++	int err = pisnd_midi_init(card->snd_card);
++
++	if (err < 0) {
++		printe("pisnd_midi_init failed: %d\n", err);
++		return err;
++	}
++
++	err = pisnd_ctl_init(card->snd_card);
++	if (err < 0) {
++		printe("pisnd_ctl_init failed: %d\n", err);
++		return err;
++	}
++
++	return 0;
++}
++
++static int pisnd_card_remove(struct snd_soc_card *card)
++{
++	pisnd_ctl_uninit();
++	pisnd_midi_uninit();
++	return 0;
++}
++
++static struct snd_soc_card pisnd_card = {
++	.name         = "pisound",
++	.owner        = THIS_MODULE,
++	.dai_link     = pisnd_dai,
++	.num_links    = ARRAY_SIZE(pisnd_dai),
++	.probe        = pisnd_card_probe,
++	.remove       = pisnd_card_remove,
++};
++
++static int pisnd_init_gpio(struct device *dev)
++{
++	osr0 = gpiod_get_index(dev, "osr", 0, GPIOD_ASIS);
++	osr1 = gpiod_get_index(dev, "osr", 1, GPIOD_ASIS);
++	osr2 = gpiod_get_index(dev, "osr", 2, GPIOD_ASIS);
++
++	reset = gpiod_get_index(dev, "reset", 0, GPIOD_ASIS);
++
++	button = gpiod_get_index(dev, "button", 0, GPIOD_ASIS);
++
++	gpiod_direction_output(osr0,  1);
++	gpiod_direction_output(osr1,  1);
++	gpiod_direction_output(osr2,  1);
++	gpiod_direction_output(reset, 1);
++
++	gpiod_set_value(reset, false);
++	gpiod_set_value(osr0,   true);
++	gpiod_set_value(osr1,  false);
++	gpiod_set_value(osr2,  false);
++	gpiod_set_value(reset,  true);
++
++	gpiod_export(button, false);
++
++	return 0;
++}
++
++static int pisnd_uninit_gpio(void)
++{
++	int i;
++
++	struct gpio_desc **gpios[] = {
++		&osr0, &osr1, &osr2, &reset, &button,
++	};
++
++	gpiod_unexport(button);
++
++	for (i = 0; i < ARRAY_SIZE(gpios); ++i) {
++		if (*gpios[i] == NULL) {
++			printd("weird, GPIO[%d] is NULL already\n", i);
++			continue;
++		}
++
++		gpiod_put(*gpios[i]);
++		*gpios[i] = NULL;
++	}
++
++	return 0;
++}
++
++static struct kobject *pisnd_kobj;
++
++static ssize_t pisnd_serial_show(
++	struct kobject *kobj,
++	struct kobj_attribute *attr,
++	char *buf
++	)
++{
++	return sprintf(buf, "%s\n", pisnd_spi_get_serial());
++}
++
++static ssize_t pisnd_id_show(
++	struct kobject *kobj,
++	struct kobj_attribute *attr,
++	char *buf
++	)
++{
++	return sprintf(buf, "%s\n", pisnd_spi_get_id());
++}
++
++static ssize_t pisnd_fw_version_show(
++	struct kobject *kobj,
++	struct kobj_attribute *attr,
++	char *buf
++	)
++{
++	return sprintf(buf, "%s\n", pisnd_spi_get_fw_version());
++}
++
++static ssize_t pisnd_hw_version_show(
++	struct kobject *kobj,
++	struct kobj_attribute *attr,
++	char *buf
++)
++{
++	return sprintf(buf, "%s\n", pisnd_spi_get_hw_version());
++}
++
++static ssize_t pisnd_led_store(
++	struct kobject *kobj,
++	struct kobj_attribute *attr,
++	const char *buf,
++	size_t length
++	)
++{
++	uint32_t timeout;
++	int err;
++
++	err = kstrtou32(buf, 10, &timeout);
++
++	if (err == 0 && timeout <= 255)
++		pisnd_spi_flash_leds(timeout);
++
++	return length;
++}
++
++static struct kobj_attribute pisnd_serial_attribute =
++	__ATTR(serial, 0444, pisnd_serial_show, NULL);
++static struct kobj_attribute pisnd_id_attribute =
++	__ATTR(id, 0444, pisnd_id_show, NULL);
++static struct kobj_attribute pisnd_fw_version_attribute =
++	__ATTR(version, 0444, pisnd_fw_version_show, NULL);
++static struct kobj_attribute pisnd_hw_version_attribute =
++__ATTR(hw_version, 0444, pisnd_hw_version_show, NULL);
++static struct kobj_attribute pisnd_led_attribute =
++	__ATTR(led, 0644, NULL, pisnd_led_store);
++
++static struct attribute *attrs[] = {
++	&pisnd_serial_attribute.attr,
++	&pisnd_id_attribute.attr,
++	&pisnd_fw_version_attribute.attr,
++	&pisnd_hw_version_attribute.attr,
++	&pisnd_led_attribute.attr,
++	NULL
++};
++
++static struct attribute_group attr_group = { .attrs = attrs };
++
++static int pisnd_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	int i;
++
++	ret = pisnd_spi_init(&pdev->dev);
++	if (ret < 0) {
++		printe("pisnd_spi_init failed: %d\n", ret);
++		return ret;
++	}
++
++	printi("Detected Pisound card:\n");
++	printi("\tSerial:           %s\n", pisnd_spi_get_serial());
++	printi("\tFirmware Version: %s\n", pisnd_spi_get_fw_version());
++	printi("\tHardware Version: %s\n", pisnd_spi_get_hw_version());
++	printi("\tId:               %s\n", pisnd_spi_get_id());
++
++	pisnd_kobj = kobject_create_and_add("pisound", kernel_kobj);
++	if (!pisnd_kobj) {
++		pisnd_spi_uninit();
++		return -ENOMEM;
++	}
++
++	ret = sysfs_create_group(pisnd_kobj, &attr_group);
++	if (ret < 0) {
++		pisnd_spi_uninit();
++		kobject_put(pisnd_kobj);
++		return -ENOMEM;
++	}
++
++	pisnd_init_gpio(&pdev->dev);
++	pisnd_card.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++
++		i2s_node = of_parse_phandle(
++			pdev->dev.of_node,
++			"i2s-controller",
++			0
++			);
++
++		for (i = 0; i < pisnd_card.num_links; ++i) {
++			struct snd_soc_dai_link *dai = &pisnd_dai[i];
++
++			if (i2s_node) {
++				dai->cpus->dai_name = NULL;
++				dai->cpus->of_node = i2s_node;
++				dai->platforms->name = NULL;
++				dai->platforms->of_node = i2s_node;
++				dai->stream_name = pisnd_spi_get_serial();
++			}
++		}
++	}
++
++	ret = snd_soc_register_card(&pisnd_card);
++
++	if (ret < 0) {
++		if (ret != -EPROBE_DEFER)
++			printe("snd_soc_register_card() failed: %d\n", ret);
++		pisnd_uninit_gpio();
++		kobject_put(pisnd_kobj);
++		pisnd_spi_uninit();
++	}
++
++	return ret;
++}
++
++static int pisnd_remove(struct platform_device *pdev)
++{
++	printi("Unloading.\n");
++
++	if (pisnd_kobj) {
++		kobject_put(pisnd_kobj);
++		pisnd_kobj = NULL;
++	}
++
++	pisnd_spi_uninit();
++
++	/* Turn off */
++	gpiod_set_value(reset, false);
++	pisnd_uninit_gpio();
++
++	return snd_soc_unregister_card(&pisnd_card);
++}
++
++MODULE_DEVICE_TABLE(of, pisound_of_match);
++
++static struct platform_driver pisnd_driver = {
++	.driver = {
++		.name           = "snd-rpi-pisound",
++		.owner          = THIS_MODULE,
++		.of_match_table = pisound_of_match,
++	},
++	.probe              = pisnd_probe,
++	.remove             = pisnd_remove,
++};
++
++module_platform_driver(pisnd_driver);
++
++MODULE_AUTHOR("Giedrius Trainavicius <giedrius@blokas.io>");
++MODULE_DESCRIPTION("ASoC Driver for Pisound, https://blokas.io/pisound");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/rpi-cirrus.c
+@@ -0,0 +1,1025 @@
++/*
++ * ASoC machine driver for Cirrus Logic Audio Card
++ * (with WM5102 and WM8804 codecs)
++ *
++ * Copyright 2015-2017 Matthias Reichl <hias@horus.com>
++ *
++ * Based on rpi-cirrus-sound-pi driver (c) Wolfson / Cirrus Logic Inc.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/slab.h>
++#include <linux/list.h>
++#include <linux/delay.h>
++#include <sound/pcm_params.h>
++
++#include <linux/mfd/arizona/registers.h>
++
++#include "../codecs/wm5102.h"
++#include "../codecs/wm8804.h"
++
++#define WM8804_CLKOUT_HZ 12000000
++
++#define RPI_CIRRUS_DEFAULT_RATE 44100
++#define WM5102_MAX_SYSCLK_1 49152000 /* max sysclk for 4K family */
++#define WM5102_MAX_SYSCLK_2 45158400 /* max sysclk for 11.025K family */
++
++static inline unsigned int calc_sysclk(unsigned int rate)
++{
++	return (rate % 4000) ? WM5102_MAX_SYSCLK_2 : WM5102_MAX_SYSCLK_1;
++}
++
++enum {
++	DAI_WM5102 = 0,
++	DAI_WM8804,
++};
++
++struct rpi_cirrus_priv {
++	/* mutex for synchronzing FLL1 access with DAPM */
++	struct mutex lock;
++	unsigned int card_rate;
++	int sync_path_enable;
++	int fll1_freq; /* negative means RefClock in spdif rx case */
++
++	/* track hw params/free for substreams */
++	unsigned int params_set;
++	unsigned int min_rate_idx, max_rate_idx;
++	unsigned char iec958_status[4];
++};
++
++/* helper functions */
++static inline struct snd_soc_pcm_runtime *get_wm5102_runtime(
++	struct snd_soc_card *card) {
++	return snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_WM5102]);
++}
++
++static inline struct snd_soc_pcm_runtime *get_wm8804_runtime(
++	struct snd_soc_card *card) {
++	return snd_soc_get_pcm_runtime(card, &card->dai_link[DAI_WM8804]);
++}
++
++
++struct rate_info {
++	unsigned int value;
++	char *text;
++};
++
++static struct rate_info min_rates[] = {
++	{     0, "off"},
++	{ 32000, "32kHz"},
++	{ 44100, "44.1kHz"}
++};
++
++#define NUM_MIN_RATES ARRAY_SIZE(min_rates)
++
++static int rpi_cirrus_min_rate_info(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_info *uinfo)
++{
++	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
++	uinfo->count = 1;
++	uinfo->value.enumerated.items = NUM_MIN_RATES;
++
++	if (uinfo->value.enumerated.item >= NUM_MIN_RATES)
++		uinfo->value.enumerated.item = NUM_MIN_RATES - 1;
++	strcpy(uinfo->value.enumerated.name,
++		min_rates[uinfo->value.enumerated.item].text);
++	return 0;
++}
++
++static int rpi_cirrus_min_rate_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++
++	ucontrol->value.enumerated.item[0] = priv->min_rate_idx;
++	return 0;
++}
++
++static int rpi_cirrus_min_rate_put(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	int changed = 0;
++
++	if (priv->min_rate_idx != ucontrol->value.enumerated.item[0]) {
++		changed = 1;
++		priv->min_rate_idx = ucontrol->value.enumerated.item[0];
++	}
++
++	return changed;
++}
++
++static struct rate_info max_rates[] = {
++	{     0, "off"},
++	{ 48000, "48kHz"},
++	{ 96000, "96kHz"}
++};
++
++#define NUM_MAX_RATES ARRAY_SIZE(max_rates)
++
++static int rpi_cirrus_max_rate_info(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_info *uinfo)
++{
++	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
++	uinfo->count = 1;
++	uinfo->value.enumerated.items = NUM_MAX_RATES;
++	if (uinfo->value.enumerated.item >= NUM_MAX_RATES)
++		uinfo->value.enumerated.item = NUM_MAX_RATES - 1;
++	strcpy(uinfo->value.enumerated.name,
++		max_rates[uinfo->value.enumerated.item].text);
++	return 0;
++}
++
++static int rpi_cirrus_max_rate_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++
++	ucontrol->value.enumerated.item[0] = priv->max_rate_idx;
++	return 0;
++}
++
++static int rpi_cirrus_max_rate_put(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	int changed = 0;
++
++	if (priv->max_rate_idx != ucontrol->value.enumerated.item[0]) {
++		changed = 1;
++		priv->max_rate_idx = ucontrol->value.enumerated.item[0];
++	}
++
++	return changed;
++}
++
++static int rpi_cirrus_spdif_info(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_info *uinfo)
++{
++	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
++	uinfo->count = 1;
++	return 0;
++}
++
++static int rpi_cirrus_spdif_playback_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	int i;
++
++	for (i = 0; i < 4; i++)
++		ucontrol->value.iec958.status[i] = priv->iec958_status[i];
++
++	return 0;
++}
++
++static int rpi_cirrus_spdif_playback_put(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_component *wm8804_component =
++		asoc_rtd_to_codec(get_wm8804_runtime(card), 0)->component;
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	unsigned char *stat = priv->iec958_status;
++	unsigned char *ctrl_stat = ucontrol->value.iec958.status;
++	unsigned int mask;
++	int i, changed = 0;
++
++	for (i = 0; i < 4; i++) {
++		mask = (i == 3) ? 0x3f : 0xff;
++		if ((ctrl_stat[i] & mask) != (stat[i] & mask)) {
++			changed = 1;
++			stat[i] = ctrl_stat[i] & mask;
++			snd_soc_component_update_bits(wm8804_component,
++				WM8804_SPDTX1 + i, mask, stat[i]);
++		}
++	}
++
++	return changed;
++}
++
++static int rpi_cirrus_spdif_mask_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	ucontrol->value.iec958.status[0] = 0xff;
++	ucontrol->value.iec958.status[1] = 0xff;
++	ucontrol->value.iec958.status[2] = 0xff;
++	ucontrol->value.iec958.status[3] = 0x3f;
++
++	return 0;
++}
++
++static int rpi_cirrus_spdif_capture_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_component *wm8804_component =
++		asoc_rtd_to_codec(get_wm8804_runtime(card), 0)->component;
++	unsigned int val, mask;
++	int i;
++
++	for (i = 0; i < 4; i++) {
++		val = snd_soc_component_read(wm8804_component,
++			WM8804_RXCHAN1 + i);
++		mask = (i == 3) ? 0x3f : 0xff;
++		ucontrol->value.iec958.status[i] = val & mask;
++	}
++
++	return 0;
++}
++
++#define SPDIF_FLAG_CTRL(desc, reg, bit, invert) \
++{ \
++		.access =  SNDRV_CTL_ELEM_ACCESS_READ \
++			   | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER, \
++		.name =    SNDRV_CTL_NAME_IEC958("", CAPTURE, NONE) \
++				desc " Flag", \
++		.info =    snd_ctl_boolean_mono_info, \
++		.get =     rpi_cirrus_spdif_status_flag_get, \
++		.private_value = \
++			(bit) | ((reg) << 8) | ((invert) << 16) \
++}
++
++static int rpi_cirrus_spdif_status_flag_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_component *wm8804_component =
++		asoc_rtd_to_codec(get_wm8804_runtime(card), 0)->component;
++
++	unsigned int bit = kcontrol->private_value & 0xff;
++	unsigned int reg = (kcontrol->private_value >> 8) & 0xff;
++	unsigned int invert = (kcontrol->private_value >> 16) & 0xff;
++	unsigned int val;
++	bool flag;
++
++	val = snd_soc_component_read(wm8804_component, reg);
++
++	flag = val & (1 << bit);
++
++	ucontrol->value.integer.value[0] = invert ? !flag : flag;
++
++	return 0;
++}
++
++static const char * const recovered_frequency_texts[] = {
++	"176.4/192 kHz",
++	"88.2/96 kHz",
++	"44.1/48 kHz",
++	"32 kHz"
++};
++
++#define NUM_RECOVERED_FREQUENCIES \
++	ARRAY_SIZE(recovered_frequency_texts)
++
++static int rpi_cirrus_recovered_frequency_info(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_info *uinfo)
++{
++	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
++	uinfo->count = 1;
++	uinfo->value.enumerated.items = NUM_RECOVERED_FREQUENCIES;
++	if (uinfo->value.enumerated.item >= NUM_RECOVERED_FREQUENCIES)
++		uinfo->value.enumerated.item = NUM_RECOVERED_FREQUENCIES - 1;
++	strcpy(uinfo->value.enumerated.name,
++		recovered_frequency_texts[uinfo->value.enumerated.item]);
++	return 0;
++}
++
++static int rpi_cirrus_recovered_frequency_get(struct snd_kcontrol *kcontrol,
++	struct snd_ctl_elem_value *ucontrol)
++{
++	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++	struct snd_soc_component *wm8804_component =
++		asoc_rtd_to_codec(get_wm8804_runtime(card), 0)->component;
++	unsigned int val;
++
++	val = snd_soc_component_read(wm8804_component, WM8804_SPDSTAT);
++
++	ucontrol->value.enumerated.item[0] = (val >> 4) & 0x03;
++	return 0;
++}
++
++static const struct snd_kcontrol_new rpi_cirrus_controls[] = {
++	{
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    "Min Sample Rate",
++		.info =    rpi_cirrus_min_rate_info,
++		.get =     rpi_cirrus_min_rate_get,
++		.put =     rpi_cirrus_min_rate_put,
++	},
++	{
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    "Max Sample Rate",
++		.info =    rpi_cirrus_max_rate_info,
++		.get =     rpi_cirrus_max_rate_get,
++		.put =     rpi_cirrus_max_rate_put,
++	},
++	{
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
++		.info =    rpi_cirrus_spdif_info,
++		.get =     rpi_cirrus_spdif_playback_get,
++		.put =     rpi_cirrus_spdif_playback_put,
++	},
++	{
++		.access =  SNDRV_CTL_ELEM_ACCESS_READ
++			   | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
++		.info =    rpi_cirrus_spdif_info,
++		.get =     rpi_cirrus_spdif_capture_get,
++	},
++	{
++		.access =  SNDRV_CTL_ELEM_ACCESS_READ,
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
++		.info =    rpi_cirrus_spdif_info,
++		.get =     rpi_cirrus_spdif_mask_get,
++	},
++	{
++		.access =  SNDRV_CTL_ELEM_ACCESS_READ
++			   | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
++		.iface =   SNDRV_CTL_ELEM_IFACE_MIXER,
++		.name =    SNDRV_CTL_NAME_IEC958("", CAPTURE, NONE)
++				"Recovered Frequency",
++		.info =    rpi_cirrus_recovered_frequency_info,
++		.get =     rpi_cirrus_recovered_frequency_get,
++	},
++	SPDIF_FLAG_CTRL("Audio", WM8804_SPDSTAT, 0, 1),
++	SPDIF_FLAG_CTRL("Non-PCM", WM8804_SPDSTAT, 1, 0),
++	SPDIF_FLAG_CTRL("Copyright", WM8804_SPDSTAT, 2, 1),
++	SPDIF_FLAG_CTRL("De-Emphasis", WM8804_SPDSTAT, 3, 0),
++	SPDIF_FLAG_CTRL("Lock", WM8804_SPDSTAT, 6, 1),
++	SPDIF_FLAG_CTRL("Invalid", WM8804_INTSTAT, 1, 0),
++	SPDIF_FLAG_CTRL("TransErr", WM8804_INTSTAT, 3, 0),
++};
++
++static const char * const linein_micbias_texts[] = {
++	"off", "on",
++};
++
++static SOC_ENUM_SINGLE_VIRT_DECL(linein_micbias_enum,
++	linein_micbias_texts);
++
++static const struct snd_kcontrol_new linein_micbias_mux =
++	SOC_DAPM_ENUM("Route", linein_micbias_enum);
++
++static int rpi_cirrus_spdif_rx_enable_event(struct snd_soc_dapm_widget *w,
++	struct snd_kcontrol *kcontrol, int event);
++
++const struct snd_soc_dapm_widget rpi_cirrus_dapm_widgets[] = {
++	SND_SOC_DAPM_MIC("DMIC", NULL),
++	SND_SOC_DAPM_MIC("Headset Mic", NULL),
++	SND_SOC_DAPM_INPUT("Line Input"),
++	SND_SOC_DAPM_MIC("Line Input with Micbias", NULL),
++	SND_SOC_DAPM_MUX("Line Input Micbias", SND_SOC_NOPM, 0, 0,
++		&linein_micbias_mux),
++	SND_SOC_DAPM_INPUT("dummy SPDIF in"),
++	SND_SOC_DAPM_PGA_E("dummy SPDIFRX", SND_SOC_NOPM, 0, 0, NULL, 0,
++		rpi_cirrus_spdif_rx_enable_event,
++		SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
++	SND_SOC_DAPM_INPUT("Dummy Input"),
++	SND_SOC_DAPM_OUTPUT("Dummy Output"),
++};
++
++const struct snd_soc_dapm_route rpi_cirrus_dapm_routes[] = {
++	{ "IN1L", NULL, "Headset Mic" },
++	{ "IN1R", NULL, "Headset Mic" },
++	{ "Headset Mic", NULL, "MICBIAS1" },
++
++	{ "IN2L", NULL, "DMIC" },
++	{ "IN2R", NULL, "DMIC" },
++	{ "DMIC", NULL, "MICBIAS2" },
++
++	{ "IN3L", NULL, "Line Input Micbias" },
++	{ "IN3R", NULL, "Line Input Micbias" },
++
++	{ "Line Input Micbias", "off", "Line Input" },
++	{ "Line Input Micbias", "on", "Line Input with Micbias" },
++
++	/* Make sure MICVDD is enabled, otherwise we get noise */
++	{ "Line Input", NULL, "MICVDD" },
++	{ "Line Input with Micbias", NULL, "MICBIAS3" },
++
++	/* Dummy routes to check whether SPDIF RX is enabled or not */
++	{"dummy SPDIFRX", NULL, "dummy SPDIF in"},
++	{"AIFTX", NULL, "dummy SPDIFRX"},
++
++	/*
++	 * Dummy routes to keep wm5102 from staying off on
++	 * playback/capture if all mixers are off.
++	 */
++	{ "Dummy Output", NULL, "AIF1RX1" },
++	{ "Dummy Output", NULL, "AIF1RX2" },
++	{ "AIF1TX1", NULL, "Dummy Input" },
++	{ "AIF1TX2", NULL, "Dummy Input" },
++};
++
++static int rpi_cirrus_clear_flls(struct snd_soc_card *card,
++	struct snd_soc_component *wm5102_component) {
++
++	int ret1, ret2;
++
++	ret1 = snd_soc_component_set_pll(wm5102_component,
++		WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0);
++	ret2 = snd_soc_component_set_pll(wm5102_component,
++		WM5102_FLL1_REFCLK, ARIZONA_FLL_SRC_NONE, 0, 0);
++
++	if (ret1) {
++		dev_warn(card->dev,
++			"setting FLL1 to zero failed: %d\n", ret1);
++		return ret1;
++	}
++	if (ret2) {
++		dev_warn(card->dev,
++			"setting FLL1_REFCLK to zero failed: %d\n", ret2);
++		return ret2;
++	}
++	return 0;
++}
++
++static int rpi_cirrus_set_fll(struct snd_soc_card *card,
++	struct snd_soc_component *wm5102_component, unsigned int clk_freq)
++{
++	int ret = snd_soc_component_set_pll(wm5102_component,
++		WM5102_FLL1,
++		ARIZONA_CLK_SRC_MCLK1,
++		WM8804_CLKOUT_HZ,
++		clk_freq);
++	if (ret)
++		dev_err(card->dev, "Failed to set FLL1 to %d: %d\n",
++			clk_freq, ret);
++
++	usleep_range(1000, 2000);
++	return ret;
++}
++
++static int rpi_cirrus_set_fll_refclk(struct snd_soc_card *card,
++	struct snd_soc_component *wm5102_component,
++	unsigned int clk_freq, unsigned int aif2_freq)
++{
++	int ret = snd_soc_component_set_pll(wm5102_component,
++		WM5102_FLL1_REFCLK,
++		ARIZONA_CLK_SRC_MCLK1,
++		WM8804_CLKOUT_HZ,
++		clk_freq);
++	if (ret) {
++		dev_err(card->dev,
++			"Failed to set FLL1_REFCLK to %d: %d\n",
++			clk_freq, ret);
++		return ret;
++	}
++
++	ret = snd_soc_component_set_pll(wm5102_component,
++		WM5102_FLL1,
++		ARIZONA_CLK_SRC_AIF2BCLK,
++		aif2_freq, clk_freq);
++	if (ret)
++		dev_err(card->dev,
++			"Failed to set FLL1 with Sync Clock %d to %d: %d\n",
++			aif2_freq, clk_freq, ret);
++
++	usleep_range(1000, 2000);
++	return ret;
++}
++
++static int rpi_cirrus_spdif_rx_enable_event(struct snd_soc_dapm_widget *w,
++	struct snd_kcontrol *kcontrol, int event)
++{
++	struct snd_soc_card *card = w->dapm->card;
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	struct snd_soc_component *wm5102_component =
++		asoc_rtd_to_codec(get_wm5102_runtime(card), 0)->component;
++
++	unsigned int clk_freq, aif2_freq;
++	int ret = 0;
++
++	switch (event) {
++	case SND_SOC_DAPM_POST_PMU:
++		mutex_lock(&priv->lock);
++
++		/* Enable sync path in case of SPDIF capture use case */
++
++		clk_freq = calc_sysclk(priv->card_rate);
++		aif2_freq = 64 * priv->card_rate;
++
++		dev_dbg(card->dev,
++			"spdif_rx: changing FLL1 to use Ref Clock clk: %d spdif: %d\n",
++			clk_freq, aif2_freq);
++
++		ret = rpi_cirrus_clear_flls(card, wm5102_component);
++		if (ret) {
++			dev_err(card->dev, "spdif_rx: failed to clear FLLs\n");
++			goto out;
++		}
++
++		ret = rpi_cirrus_set_fll_refclk(card, wm5102_component,
++			clk_freq, aif2_freq);
++
++		if (ret) {
++			dev_err(card->dev, "spdif_rx: failed to set FLLs\n");
++			goto out;
++		}
++
++		/* set to negative to indicate we're doing spdif rx */
++		priv->fll1_freq = -clk_freq;
++		priv->sync_path_enable = 1;
++		break;
++
++	case SND_SOC_DAPM_POST_PMD:
++		mutex_lock(&priv->lock);
++		priv->sync_path_enable = 0;
++		break;
++
++	default:
++		return 0;
++	}
++
++out:
++	mutex_unlock(&priv->lock);
++	return ret;
++}
++
++static int rpi_cirrus_set_bias_level(struct snd_soc_card *card,
++	struct snd_soc_dapm_context *dapm,
++	enum snd_soc_bias_level level)
++{
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	struct snd_soc_pcm_runtime *wm5102_runtime = get_wm5102_runtime(card);
++	struct snd_soc_component *wm5102_component =
++		asoc_rtd_to_codec(wm5102_runtime, 0)->component;
++
++	int ret = 0;
++	unsigned int clk_freq;
++
++	if (dapm->dev != asoc_rtd_to_codec(wm5102_runtime, 0)->dev)
++		return 0;
++
++	switch (level) {
++	case SND_SOC_BIAS_PREPARE:
++		if (dapm->bias_level == SND_SOC_BIAS_ON)
++			break;
++
++		mutex_lock(&priv->lock);
++
++		if (!priv->sync_path_enable) {
++			clk_freq = calc_sysclk(priv->card_rate);
++
++			dev_dbg(card->dev,
++				"set_bias: changing FLL1 from %d to %d\n",
++				priv->fll1_freq, clk_freq);
++
++			ret = rpi_cirrus_set_fll(card,
++				wm5102_component, clk_freq);
++			if (ret)
++				dev_err(card->dev,
++					"set_bias: Failed to set FLL1\n");
++			else
++				priv->fll1_freq = clk_freq;
++		}
++		mutex_unlock(&priv->lock);
++		break;
++	default:
++		break;
++	}
++
++	return ret;
++}
++
++static int rpi_cirrus_set_bias_level_post(struct snd_soc_card *card,
++	struct snd_soc_dapm_context *dapm,
++	enum snd_soc_bias_level level)
++{
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	struct snd_soc_pcm_runtime *wm5102_runtime = get_wm5102_runtime(card);
++	struct snd_soc_component *wm5102_component =
++		asoc_rtd_to_codec(wm5102_runtime, 0)->component;
++
++	if (dapm->dev != asoc_rtd_to_codec(wm5102_runtime, 0)->dev)
++		return 0;
++
++	switch (level) {
++	case SND_SOC_BIAS_STANDBY:
++		mutex_lock(&priv->lock);
++
++		dev_dbg(card->dev,
++			"set_bias_post: changing FLL1 from %d to off\n",
++				priv->fll1_freq);
++
++		if (rpi_cirrus_clear_flls(card, wm5102_component))
++			dev_err(card->dev,
++				"set_bias_post: failed to clear FLLs\n");
++		else
++			priv->fll1_freq = 0;
++
++		mutex_unlock(&priv->lock);
++
++		break;
++	default:
++		break;
++	}
++
++	return 0;
++}
++
++static int rpi_cirrus_set_wm8804_pll(struct snd_soc_card *card,
++	struct snd_soc_dai *wm8804_dai, unsigned int rate)
++{
++	int ret;
++
++	/* use 256fs */
++	unsigned int clk_freq = rate * 256;
++
++	ret = snd_soc_dai_set_pll(wm8804_dai, 0, 0,
++		WM8804_CLKOUT_HZ, clk_freq);
++	if (ret) {
++		dev_err(card->dev,
++			"Failed to set WM8804 PLL to %d: %d\n", clk_freq, ret);
++		return ret;
++	}
++
++	/* Set MCLK as PLL Output */
++	ret = snd_soc_dai_set_sysclk(wm8804_dai,
++		WM8804_TX_CLKSRC_PLL, clk_freq, 0);
++	if (ret) {
++		dev_err(card->dev,
++			"Failed to set MCLK as PLL Output: %d\n", ret);
++		return ret;
++	}
++
++	return ret;
++}
++
++static int rpi_cirrus_startup(struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_card *card = rtd->card;
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	unsigned int min_rate = min_rates[priv->min_rate_idx].value;
++	unsigned int max_rate = max_rates[priv->max_rate_idx].value;
++
++	if (min_rate || max_rate) {
++		if (max_rate == 0)
++			max_rate = UINT_MAX;
++
++		dev_dbg(card->dev,
++			"startup: limiting rate to %u-%u\n",
++			min_rate, max_rate);
++
++		snd_pcm_hw_constraint_minmax(substream->runtime,
++			SNDRV_PCM_HW_PARAM_RATE, min_rate, max_rate);
++	}
++
++	return 0;
++}
++
++static struct snd_soc_pcm_stream rpi_cirrus_dai_link2_params = {
++	.formats = SNDRV_PCM_FMTBIT_S24_LE,
++	.channels_min = 2,
++	.channels_max = 2,
++	.rate_min = RPI_CIRRUS_DEFAULT_RATE,
++	.rate_max = RPI_CIRRUS_DEFAULT_RATE,
++};
++
++static int rpi_cirrus_hw_params(struct snd_pcm_substream *substream,
++	struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_card *card = rtd->card;
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	struct snd_soc_dai *bcm_i2s_dai = asoc_rtd_to_cpu(rtd, 0);
++	struct snd_soc_component *wm5102_component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_dai *wm8804_dai = asoc_rtd_to_codec(get_wm8804_runtime(card), 0);
++
++	int ret;
++
++	unsigned int width = snd_pcm_format_physical_width(
++		params_format(params));
++	unsigned int rate = params_rate(params);
++	unsigned int clk_freq = calc_sysclk(rate);
++
++	mutex_lock(&priv->lock);
++
++	dev_dbg(card->dev, "hw_params: setting rate to %d\n", rate);
++
++	ret = snd_soc_dai_set_bclk_ratio(bcm_i2s_dai, 2 * width);
++	if (ret) {
++		dev_err(card->dev, "set_bclk_ratio failed: %d\n", ret);
++		goto out;
++	}
++
++	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(rtd, 0), 0x03, 0x03, 2, width);
++	if (ret) {
++		dev_err(card->dev, "set_tdm_slot failed: %d\n", ret);
++		goto out;
++	}
++
++	/* WM8804 supports sample rates from 32k only */
++	if (rate >= 32000) {
++		ret = rpi_cirrus_set_wm8804_pll(card, wm8804_dai, rate);
++		if (ret)
++			goto out;
++	}
++
++	ret = snd_soc_component_set_sysclk(wm5102_component,
++		ARIZONA_CLK_SYSCLK,
++		ARIZONA_CLK_SRC_FLL1,
++		clk_freq,
++		SND_SOC_CLOCK_IN);
++	if (ret) {
++		dev_err(card->dev, "Failed to set SYSCLK: %d\n", ret);
++		goto out;
++	}
++
++	if ((priv->fll1_freq > 0) && (priv->fll1_freq != clk_freq)) {
++		dev_dbg(card->dev,
++			"hw_params: changing FLL1 from %d to %d\n",
++			priv->fll1_freq, clk_freq);
++
++		if (rpi_cirrus_clear_flls(card, wm5102_component)) {
++			dev_err(card->dev, "hw_params: failed to clear FLLs\n");
++			goto out;
++		}
++
++		if (rpi_cirrus_set_fll(card, wm5102_component, clk_freq)) {
++			dev_err(card->dev, "hw_params: failed to set FLL\n");
++			goto out;
++		}
++
++		priv->fll1_freq = clk_freq;
++	}
++
++	priv->card_rate = rate;
++	rpi_cirrus_dai_link2_params.rate_min = rate;
++	rpi_cirrus_dai_link2_params.rate_max = rate;
++
++	priv->params_set |= 1 << substream->stream;
++
++out:
++	mutex_unlock(&priv->lock);
++
++	return ret;
++}
++
++static int rpi_cirrus_hw_free(struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_card *card = rtd->card;
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	struct snd_soc_component *wm5102_component = asoc_rtd_to_codec(rtd, 0)->component;
++	int ret;
++	unsigned int old_params_set = priv->params_set;
++
++	priv->params_set &= ~(1 << substream->stream);
++
++	/* disable sysclk if this was the last open stream */
++	if (priv->params_set == 0 && old_params_set) {
++		dev_dbg(card->dev,
++			"hw_free: Setting SYSCLK to Zero\n");
++
++		ret = snd_soc_component_set_sysclk(wm5102_component,
++			ARIZONA_CLK_SYSCLK,
++			ARIZONA_CLK_SRC_FLL1,
++			0,
++			SND_SOC_CLOCK_IN);
++		if (ret)
++			dev_err(card->dev,
++				"hw_free: Failed to set SYSCLK to Zero: %d\n",
++				ret);
++	}
++	return 0;
++}
++
++static int rpi_cirrus_init_wm5102(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	int ret;
++
++	/* no 32kHz input, derive it from sysclk if needed  */
++	snd_soc_component_update_bits(component,
++			ARIZONA_CLOCK_32K_1, ARIZONA_CLK_32K_SRC_MASK, 2);
++
++	if (rpi_cirrus_clear_flls(rtd->card, component))
++		dev_warn(rtd->card->dev,
++			"init_wm5102: failed to clear FLLs\n");
++
++	ret = snd_soc_component_set_sysclk(component,
++		ARIZONA_CLK_SYSCLK, ARIZONA_CLK_SRC_FLL1,
++		0, SND_SOC_CLOCK_IN);
++	if (ret) {
++		dev_err(rtd->card->dev,
++			"Failed to set SYSCLK to Zero: %d\n", ret);
++		return ret;
++	}
++
++	return 0;
++}
++
++static int rpi_cirrus_init_wm8804(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++	struct snd_soc_component *component = codec_dai->component;
++	struct snd_soc_card *card = rtd->card;
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	unsigned int val, mask;
++	int i, ret;
++
++	for (i = 0; i < 4; i++) {
++		val = snd_soc_component_read(component,
++			WM8804_SPDTX1 + i);
++		mask = (i == 3) ? 0x3f : 0xff;
++		priv->iec958_status[i] = val & mask;
++	}
++
++	/* Setup for 256fs */
++	ret = snd_soc_dai_set_clkdiv(codec_dai,
++		WM8804_MCLK_DIV, WM8804_MCLKDIV_256FS);
++	if (ret) {
++		dev_err(card->dev,
++			"init_wm8804: Failed to set MCLK_DIV to 256fs: %d\n",
++			ret);
++		return ret;
++	}
++
++	/* Output OSC on CLKOUT */
++	ret = snd_soc_dai_set_sysclk(codec_dai,
++		WM8804_CLKOUT_SRC_OSCCLK, WM8804_CLKOUT_HZ, 0);
++	if (ret)
++		dev_err(card->dev,
++			"init_wm8804: Failed to set CLKOUT as OSC Frequency: %d\n",
++			ret);
++
++	/* Init PLL with default samplerate */
++	ret = rpi_cirrus_set_wm8804_pll(card, codec_dai,
++		RPI_CIRRUS_DEFAULT_RATE);
++	if (ret)
++		dev_err(card->dev,
++			"init_wm8804: Failed to setup PLL for %dHz: %d\n",
++			RPI_CIRRUS_DEFAULT_RATE, ret);
++
++	return ret;
++}
++
++static struct snd_soc_ops rpi_cirrus_ops = {
++	.startup = rpi_cirrus_startup,
++	.hw_params = rpi_cirrus_hw_params,
++	.hw_free = rpi_cirrus_hw_free,
++};
++
++SND_SOC_DAILINK_DEFS(wm5102,
++     DAILINK_COMP_ARRAY(COMP_EMPTY()),
++     DAILINK_COMP_ARRAY(COMP_CODEC("wm5102-codec", "wm5102-aif1")),
++     DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++SND_SOC_DAILINK_DEFS(wm8804,
++     DAILINK_COMP_ARRAY(COMP_CPU("wm5102-aif2")),
++     DAILINK_COMP_ARRAY(COMP_CODEC("wm8804.1-003b", "wm8804-spdif")));
++
++static struct snd_soc_dai_link rpi_cirrus_dai[] = {
++	[DAI_WM5102] = {
++		.name		= "WM5102",
++		.stream_name	= "WM5102 AiFi",
++		.dai_fmt	=   SND_SOC_DAIFMT_I2S
++				  | SND_SOC_DAIFMT_NB_NF
++				  | SND_SOC_DAIFMT_CBM_CFM,
++		.ops		= &rpi_cirrus_ops,
++		.init		= rpi_cirrus_init_wm5102,
++		SND_SOC_DAILINK_REG(wm5102),
++	},
++	[DAI_WM8804] = {
++		.name		= "WM5102 SPDIF",
++		.stream_name	= "SPDIF Tx/Rx",
++		.dai_fmt	=   SND_SOC_DAIFMT_I2S
++				  | SND_SOC_DAIFMT_NB_NF
++				  | SND_SOC_DAIFMT_CBM_CFM,
++		.ignore_suspend = 1,
++		.params		= &rpi_cirrus_dai_link2_params,
++		.init		= rpi_cirrus_init_wm8804,
++		SND_SOC_DAILINK_REG(wm8804),
++	},
++};
++
++
++static int rpi_cirrus_late_probe(struct snd_soc_card *card)
++{
++	struct rpi_cirrus_priv *priv = snd_soc_card_get_drvdata(card);
++	struct snd_soc_pcm_runtime *wm5102_runtime = get_wm5102_runtime(card);
++	struct snd_soc_pcm_runtime *wm8804_runtime = get_wm8804_runtime(card);
++	int ret;
++
++	dev_dbg(card->dev, "iec958_bits: %02x %02x %02x %02x\n",
++		priv->iec958_status[0],
++		priv->iec958_status[1],
++		priv->iec958_status[2],
++		priv->iec958_status[3]);
++
++	ret = snd_soc_dai_set_sysclk(
++		asoc_rtd_to_codec(wm5102_runtime, 0), ARIZONA_CLK_SYSCLK, 0, 0);
++	if (ret) {
++		dev_err(card->dev,
++			"Failed to set WM5102 codec dai clk domain: %d\n", ret);
++		return ret;
++	}
++
++	ret = snd_soc_dai_set_sysclk(
++		asoc_rtd_to_cpu(wm8804_runtime, 0), ARIZONA_CLK_SYSCLK, 0, 0);
++	if (ret)
++		dev_err(card->dev,
++			"Failed to set WM8804 codec dai clk domain: %d\n", ret);
++
++	return ret;
++}
++
++/* audio machine driver */
++static struct snd_soc_card rpi_cirrus_card = {
++	.name			= "RPi-Cirrus",
++	.driver_name		= "RPiCirrus",
++	.owner			= THIS_MODULE,
++	.dai_link		= rpi_cirrus_dai,
++	.num_links		= ARRAY_SIZE(rpi_cirrus_dai),
++	.late_probe		= rpi_cirrus_late_probe,
++	.controls		= rpi_cirrus_controls,
++	.num_controls		= ARRAY_SIZE(rpi_cirrus_controls),
++	.dapm_widgets		= rpi_cirrus_dapm_widgets,
++	.num_dapm_widgets	= ARRAY_SIZE(rpi_cirrus_dapm_widgets),
++	.dapm_routes		= rpi_cirrus_dapm_routes,
++	.num_dapm_routes	= ARRAY_SIZE(rpi_cirrus_dapm_routes),
++	.set_bias_level		= rpi_cirrus_set_bias_level,
++	.set_bias_level_post	= rpi_cirrus_set_bias_level_post,
++};
++
++static int rpi_cirrus_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	struct rpi_cirrus_priv *priv;
++	struct device_node *i2s_node;
++
++	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
++	if (!priv)
++		return -ENOMEM;
++
++	priv->min_rate_idx = 1; /* min samplerate 32kHz */
++	priv->card_rate = RPI_CIRRUS_DEFAULT_RATE;
++
++	mutex_init(&priv->lock);
++
++	snd_soc_card_set_drvdata(&rpi_cirrus_card, priv);
++
++	if (!pdev->dev.of_node)
++		return -ENODEV;
++
++	i2s_node = of_parse_phandle(
++			pdev->dev.of_node, "i2s-controller", 0);
++	if (!i2s_node) {
++		dev_err(&pdev->dev, "i2s-controller missing in DT\n");
++		return -ENODEV;
++	}
++
++	rpi_cirrus_dai[DAI_WM5102].cpus->of_node = i2s_node;
++	rpi_cirrus_dai[DAI_WM5102].platforms->of_node = i2s_node;
++
++	rpi_cirrus_card.dev = &pdev->dev;
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &rpi_cirrus_card);
++	if (ret) {
++		if (ret == -EPROBE_DEFER)
++			dev_dbg(&pdev->dev,
++				"register card requested probe deferral\n");
++		else
++			dev_err(&pdev->dev,
++				"Failed to register card: %d\n", ret);
++	}
++
++	return ret;
++}
++
++static const struct of_device_id rpi_cirrus_of_match[] = {
++	{ .compatible = "wlf,rpi-cirrus", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, rpi_cirrus_of_match);
++
++static struct platform_driver rpi_cirrus_driver = {
++	.driver	= {
++		.name   = "snd-rpi-cirrus",
++		.of_match_table = of_match_ptr(rpi_cirrus_of_match),
++	},
++	.probe	= rpi_cirrus_probe,
++};
++
++module_platform_driver(rpi_cirrus_driver);
++
++MODULE_AUTHOR("Matthias Reichl <hias@horus.com>");
++MODULE_DESCRIPTION("ASoC driver for Cirrus Logic Audio Card");
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/sound/soc/bcm/rpi-proto.c
+@@ -0,0 +1,147 @@
++/*
++ * ASoC driver for PROTO AudioCODEC (with a WM8731)
++ * connected to a Raspberry Pi
++ *
++ * Author:      Florian Meier, <koalo@koalo.de>
++ *	      Copyright 2013
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include "../codecs/wm8731.h"
++
++static const unsigned int wm8731_rates_12288000[] = {
++	8000, 32000, 48000, 96000,
++};
++
++static struct snd_pcm_hw_constraint_list wm8731_constraints_12288000 = {
++	.list = wm8731_rates_12288000,
++	.count = ARRAY_SIZE(wm8731_rates_12288000),
++};
++
++static int snd_rpi_proto_startup(struct snd_pcm_substream *substream)
++{
++	/* Setup constraints, because there is a 12.288 MHz XTAL on the board */
++	snd_pcm_hw_constraint_list(substream->runtime, 0,
++				SNDRV_PCM_HW_PARAM_RATE,
++				&wm8731_constraints_12288000);
++	return 0;
++}
++
++static int snd_rpi_proto_hw_params(struct snd_pcm_substream *substream,
++				       struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++	int sysclk = 12288000; /* This is fixed on this board */
++
++	/* Set proto bclk */
++	int ret = snd_soc_dai_set_bclk_ratio(cpu_dai,32*2);
++	if (ret < 0){
++		dev_err(rtd->card->dev,
++				"Failed to set BCLK ratio %d\n", ret);
++		return ret;
++	}
++
++	/* Set proto sysclk */
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
++			sysclk, SND_SOC_CLOCK_IN);
++	if (ret < 0) {
++		dev_err(rtd->card->dev,
++				"Failed to set WM8731 SYSCLK: %d\n", ret);
++		return ret;
++	}
++
++	return 0;
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_proto_ops = {
++	.startup = snd_rpi_proto_startup,
++	.hw_params = snd_rpi_proto_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(rpi_proto,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("wm8731.1-001a", "wm8731-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_proto_dai[] = {
++{
++	.name		= "WM8731",
++	.stream_name	= "WM8731 HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S
++				| SND_SOC_DAIFMT_NB_NF
++				| SND_SOC_DAIFMT_CBM_CFM,
++	.ops		= &snd_rpi_proto_ops,
++	SND_SOC_DAILINK_REG(rpi_proto),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_proto = {
++	.name		= "snd_rpi_proto",
++	.owner		= THIS_MODULE,
++	.dai_link	= snd_rpi_proto_dai,
++	.num_links	= ARRAY_SIZE(snd_rpi_proto_dai),
++};
++
++static int snd_rpi_proto_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_rpi_proto.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai = &snd_rpi_proto_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++				            "i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_proto);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++				"snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_rpi_proto_of_match[] = {
++	{ .compatible = "rpi,rpi-proto", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_proto_of_match);
++
++static struct platform_driver snd_rpi_proto_driver = {
++	.driver = {
++		.name   = "snd-rpi-proto",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_proto_of_match,
++	},
++	.probe	  = snd_rpi_proto_probe,
++};
++
++module_platform_driver(snd_rpi_proto_driver);
++
++MODULE_AUTHOR("Florian Meier");
++MODULE_DESCRIPTION("ASoC Driver for Raspberry Pi connected to PROTO board (WM8731)");
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/sound/soc/bcm/rpi-simple-soundcard.c
+@@ -0,0 +1,419 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * rpi-simple-soundcard.c -- ALSA SoC Raspberry Pi soundcard.
++ *
++ * Copyright (C) 2018 Raspberry Pi.
++ *
++ * Authors: Tim Gover <tim.gover@raspberrypi.org>
++ *
++ * Based on code:
++ * hifiberry_amp.c, hifiberry_dac.c, rpi-dac.c
++ * by Florian Meier <florian.meier@koalo.de>
++ *
++ * googlevoicehat-soundcard.c
++ * by Peter Malkin <petermalkin@google.com>
++ *
++ * adau1977-adc.c
++ * by Andrey Grodzovsky <andrey2805@gmail.com>
++ *
++ * merus-amp.c
++ * by Ariel Muszkat <ariel.muszkat@gmail.com>
++ *		Jorgen Kragh Jakobsen <jorgen.kraghjakobsen@infineon.com>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/gpio/consumer.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++
++/* Parameters for generic RPI functions */
++struct snd_rpi_simple_drvdata {
++	struct snd_soc_dai_link *dai;
++	const char* card_name;
++	unsigned int fixed_bclk_ratio;
++};
++
++static struct snd_soc_card snd_rpi_simple = {
++	.driver_name  = "RPi-simple",
++	.owner        = THIS_MODULE,
++	.dai_link     = NULL,
++	.num_links    = 1, /* Only a single DAI supported at the moment */
++};
++
++static int snd_rpi_simple_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_rpi_simple_drvdata *drvdata =
++		snd_soc_card_get_drvdata(rtd->card);
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++
++	if (drvdata->fixed_bclk_ratio > 0)
++		return snd_soc_dai_set_bclk_ratio(cpu_dai,
++				drvdata->fixed_bclk_ratio);
++
++	return 0;
++}
++
++static int pifi_mini_210_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_component *dac;
++	struct gpio_desc *pdn_gpio, *rst_gpio;
++	struct snd_soc_dai *codec_dai;
++	int ret;
++
++	snd_rpi_simple_init(rtd);
++	codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	dac = codec_dai[0].component;
++
++	pdn_gpio = devm_gpiod_get_optional(snd_rpi_simple.dev, "pdn",
++						GPIOD_OUT_LOW);
++	if (IS_ERR(pdn_gpio)) {
++		ret = PTR_ERR(pdn_gpio);
++		dev_err(snd_rpi_simple.dev, "failed to get pdn gpio: %d\n", ret);
++		return ret;
++	}
++
++	rst_gpio = devm_gpiod_get_optional(snd_rpi_simple.dev, "rst",
++						GPIOD_OUT_LOW);
++	if (IS_ERR(rst_gpio)) {
++		ret = PTR_ERR(rst_gpio);
++		dev_err(snd_rpi_simple.dev, "failed to get rst gpio: %d\n", ret);
++		return ret;
++	}
++
++	// Set up cards - pulse power down and reset first, then
++	// set up according to datasheet
++	gpiod_set_value_cansleep(pdn_gpio, 1);
++	gpiod_set_value_cansleep(rst_gpio, 1);
++	usleep_range(1000, 10000);
++	gpiod_set_value_cansleep(pdn_gpio, 0);
++	usleep_range(20000, 30000);
++	gpiod_set_value_cansleep(rst_gpio, 0);
++	usleep_range(20000, 30000);
++
++	// Oscillator trim
++	snd_soc_component_write(dac, 0x1b, 0);
++	usleep_range(60000, 80000);
++
++	// MCLK at 64fs, sample rate 44.1 or 48kHz
++	snd_soc_component_write(dac, 0x00, 0x60);
++
++	// Set up for BTL - AD/BD mode - AD is 0x00107772, BD is 0x00987772
++	snd_soc_component_write(dac, 0x20, 0x00107772);
++
++	// End mute
++	snd_soc_component_write(dac, 0x05, 0x00);
++
++	return 0;
++}
++
++static int snd_rpi_simple_hw_params(struct snd_pcm_substream *substream,
++		struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++	struct snd_rpi_simple_drvdata *drvdata;
++	unsigned int sample_bits;
++
++	drvdata = snd_soc_card_get_drvdata(rtd->card);
++
++	if (drvdata->fixed_bclk_ratio > 0)
++		return 0; // BCLK is configured in .init
++
++	/* The simple drivers just set the bclk_ratio to sample_bits * 2 so
++	 * hard-code this for now. More complex drivers could just replace
++	 * the hw_params routine.
++	 */
++	sample_bits = snd_pcm_format_physical_width(params_format(params));
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
++}
++
++static struct snd_soc_ops snd_rpi_simple_ops = {
++	.hw_params = snd_rpi_simple_hw_params,
++};
++
++enum adau1977_clk_id {
++	ADAU1977_SYSCLK,
++};
++
++enum adau1977_sysclk_src {
++	ADAU1977_SYSCLK_SRC_MCLK,
++	ADAU1977_SYSCLK_SRC_LRCLK,
++};
++
++static int adau1977_init(struct snd_soc_pcm_runtime *rtd)
++{
++	int ret;
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++
++	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, 0, 0, 0);
++	if (ret < 0)
++		return ret;
++
++	return snd_soc_component_set_sysclk(codec_dai->component,
++			ADAU1977_SYSCLK, ADAU1977_SYSCLK_SRC_MCLK,
++			11289600, SND_SOC_CLOCK_IN);
++}
++
++SND_SOC_DAILINK_DEFS(adau1977,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("adau1977.1-0011", "adau1977-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_rpi_adau1977_dai[] = {
++	{
++	.name           = "adau1977",
++	.stream_name    = "ADAU1977",
++	.init           = adau1977_init,
++	.dai_fmt = SND_SOC_DAIFMT_I2S |
++		SND_SOC_DAIFMT_NB_NF |
++		SND_SOC_DAIFMT_CBM_CFM,
++	SND_SOC_DAILINK_REG(adau1977),
++	},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_adau1977 = {
++	.card_name = "snd_rpi_adau1977_adc",
++	.dai       = snd_rpi_adau1977_dai,
++};
++
++SND_SOC_DAILINK_DEFS(gvchat,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("voicehat-codec", "voicehat-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_googlevoicehat_soundcard_dai[] = {
++{
++	.name           = "Google voiceHAT SoundCard",
++	.stream_name    = "Google voiceHAT SoundCard HiFi",
++	.dai_fmt        =  SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	SND_SOC_DAILINK_REG(gvchat),
++},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_googlevoicehat = {
++	.card_name = "snd_rpi_googlevoicehat_soundcard",
++	.dai       = snd_googlevoicehat_soundcard_dai,
++};
++
++SND_SOC_DAILINK_DEFS(hifiberry_dacplusdsp,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("dacplusdsp-codec", "dacplusdsp-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_hifiberrydacplusdsp_soundcard_dai[] = {
++{
++	.name           = "Hifiberry DAC+DSP SoundCard",
++	.stream_name    = "Hifiberry DAC+DSP SoundCard HiFi",
++	.dai_fmt        =  SND_SOC_DAIFMT_I2S |
++			   SND_SOC_DAIFMT_NB_NF |
++			   SND_SOC_DAIFMT_CBS_CFS,
++	SND_SOC_DAILINK_REG(hifiberry_dacplusdsp),
++},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_hifiberrydacplusdsp = {
++	.card_name = "snd_rpi_hifiberrydacplusdsp_soundcard",
++	.dai       = snd_hifiberrydacplusdsp_soundcard_dai,
++};
++
++SND_SOC_DAILINK_DEFS(hifiberry_amp,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("tas5713.1-001b", "tas5713-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_hifiberry_amp_dai[] = {
++	{
++		.name           = "HifiBerry AMP",
++		.stream_name    = "HifiBerry AMP HiFi",
++		.dai_fmt        = SND_SOC_DAIFMT_I2S |
++					SND_SOC_DAIFMT_NB_NF |
++					SND_SOC_DAIFMT_CBS_CFS,
++		SND_SOC_DAILINK_REG(hifiberry_amp),
++	},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_hifiberry_amp = {
++	.card_name        = "snd_rpi_hifiberry_amp",
++	.dai              = snd_hifiberry_amp_dai,
++	.fixed_bclk_ratio = 64,
++};
++
++SND_SOC_DAILINK_DEFS(hifiberry_dac,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm5102a-codec", "pcm5102a-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_hifiberry_dac_dai[] = {
++	{
++		.name           = "HifiBerry DAC",
++		.stream_name    = "HifiBerry DAC HiFi",
++		.dai_fmt        = SND_SOC_DAIFMT_I2S |
++					SND_SOC_DAIFMT_NB_NF |
++					SND_SOC_DAIFMT_CBS_CFS,
++		SND_SOC_DAILINK_REG(hifiberry_dac),
++	},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_hifiberry_dac = {
++	.card_name = "snd_rpi_hifiberry_dac",
++	.dai       = snd_hifiberry_dac_dai,
++};
++
++SND_SOC_DAILINK_DEFS(rpi_dac,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm1794a-codec", "pcm1794a-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_rpi_dac_dai[] = {
++{
++	.name		= "RPi-DAC",
++	.stream_name	= "RPi-DAC HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBS_CFS,
++	SND_SOC_DAILINK_REG(rpi_dac),
++},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_rpi_dac = {
++	.card_name        = "snd_rpi_rpi_dac",
++	.dai              = snd_rpi_dac_dai,
++	.fixed_bclk_ratio = 64,
++};
++
++SND_SOC_DAILINK_DEFS(merus_amp,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("ma120x0p.1-0020","ma120x0p-amp")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_merus_amp_dai[] = {
++	{
++		.name           = "MerusAmp",
++		.stream_name    = "Merus Audio Amp",
++		.dai_fmt        = SND_SOC_DAIFMT_I2S |
++					SND_SOC_DAIFMT_NB_NF |
++					SND_SOC_DAIFMT_CBS_CFS,
++		SND_SOC_DAILINK_REG(merus_amp),
++	},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_merus_amp = {
++	.card_name        = "snd_rpi_merus_amp",
++	.dai              = snd_merus_amp_dai,
++	.fixed_bclk_ratio = 64,
++};
++
++SND_SOC_DAILINK_DEFS(pifi_mini_210,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("tas571x.1-001a", "tas571x-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_pifi_mini_210_dai[] = {
++	{
++		.name           = "PiFi Mini 210",
++		.stream_name    = "PiFi Mini 210 HiFi",
++		.init			= pifi_mini_210_init,
++		.dai_fmt        = SND_SOC_DAIFMT_I2S |
++					SND_SOC_DAIFMT_NB_NF |
++					SND_SOC_DAIFMT_CBS_CFS,
++		SND_SOC_DAILINK_REG(pifi_mini_210),
++	},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_pifi_mini_210 = {
++	.card_name        = "snd_pifi_mini_210",
++	.dai              = snd_pifi_mini_210_dai,
++	.fixed_bclk_ratio = 64,
++};
++
++static const struct of_device_id snd_rpi_simple_of_match[] = {
++	{ .compatible = "adi,adau1977-adc",
++		.data = (void *) &drvdata_adau1977 },
++	{ .compatible = "googlevoicehat,googlevoicehat-soundcard",
++		.data = (void *) &drvdata_googlevoicehat },
++	{ .compatible = "hifiberrydacplusdsp,hifiberrydacplusdsp-soundcard",
++		.data = (void *) &drvdata_hifiberrydacplusdsp },
++	{ .compatible = "hifiberry,hifiberry-amp",
++		.data = (void *) &drvdata_hifiberry_amp },
++	{ .compatible = "hifiberry,hifiberry-dac",
++		.data = (void *) &drvdata_hifiberry_dac },
++	{ .compatible = "rpi,rpi-dac", &drvdata_rpi_dac},
++	{ .compatible = "merus,merus-amp",
++		.data = (void *) &drvdata_merus_amp },
++	{ .compatible = "pifi,pifi-mini-210",
++		.data = (void *) &drvdata_pifi_mini_210 },
++	{},
++};
++
++static int snd_rpi_simple_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	const struct of_device_id *of_id;
++
++	snd_rpi_simple.dev = &pdev->dev;
++	of_id = of_match_node(snd_rpi_simple_of_match, pdev->dev.of_node);
++
++	if (pdev->dev.of_node && of_id->data) {
++		struct device_node *i2s_node;
++		struct snd_rpi_simple_drvdata *drvdata =
++			(struct snd_rpi_simple_drvdata *) of_id->data;
++		struct snd_soc_dai_link *dai = drvdata->dai;
++
++		snd_soc_card_set_drvdata(&snd_rpi_simple, drvdata);
++
++		/* More complex drivers might override individual functions */
++		if (!dai->init)
++			dai->init = snd_rpi_simple_init;
++		if (!dai->ops)
++			dai->ops = &snd_rpi_simple_ops;
++
++		snd_rpi_simple.name = drvdata->card_name;
++
++		snd_rpi_simple.dai_link = dai;
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++				"i2s-controller", 0);
++		if (!i2s_node) {
++			pr_err("Failed to find i2s-controller DT node\n");
++			return -ENODEV;
++		}
++
++		dai->cpus->of_node = i2s_node;
++		dai->platforms->of_node = i2s_node;
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_simple);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev, "Failed to register card %d\n", ret);
++
++	return ret;
++}
++
++static struct platform_driver snd_rpi_simple_driver = {
++	.driver = {
++		.name   = "snd-rpi-simple",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_simple_of_match,
++	},
++	.probe          = snd_rpi_simple_probe,
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_simple_of_match);
++
++module_platform_driver(snd_rpi_simple_driver);
++
++MODULE_AUTHOR("Tim Gover <tim.gover@raspberrypi.org>");
++MODULE_DESCRIPTION("ASoC Raspberry Pi simple soundcard driver ");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/bcm/rpi-wm8804-soundcard.c
+@@ -0,0 +1,410 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * rpi--wm8804.c -- ALSA SoC Raspberry Pi soundcard.
++ *
++ * Copyright (C) 2018 Raspberry Pi.
++ *
++ * Authors: Tim Gover <tim.gover@raspberrypi.org>
++ *
++ * Generic driver for Pi Hat WM8804 digi sounds cards
++ *
++ * Based upon code from:
++ * justboom-digi.c
++ * by Milan Neskovic <info@justboom.co>
++ *
++ * iqaudio_digi.c
++ * by Daniel Matuschek <info@crazy-audio.com>
++ *
++ * allo-digione.c
++ * by Baswaraj <jaikumar@cem-solutions.net>
++ *
++ * hifiberry-digi.c
++ * Daniel Matuschek <info@crazy-audio.com>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/gpio/consumer.h>
++#include <linux/platform_device.h>
++#include <linux/module.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++
++#include "../codecs/wm8804.h"
++
++struct wm8804_clk_cfg {
++	unsigned int sysclk_freq;
++	unsigned int mclk_freq;
++	unsigned int mclk_div;
++};
++
++/* Parameters for generic functions */
++struct snd_rpi_wm8804_drvdata {
++	/* Required - pointer to the DAI structure */
++	struct snd_soc_dai_link *dai;
++	/* Required - snd_soc_card name */
++	const char *card_name;
++	/* Optional DT node names if card info is defined in DT */
++	const char *card_name_dt;
++	const char *dai_name_dt;
++	const char *dai_stream_name_dt;
++	/* Optional probe extension - called prior to register_card */
++	int (*probe)(struct platform_device *pdev);
++};
++
++static struct gpio_desc *snd_clk44gpio;
++static struct gpio_desc *snd_clk48gpio;
++static int wm8804_samplerate = 0;
++
++/* Forward declarations */
++static struct snd_soc_dai_link snd_allo_digione_dai[];
++static struct snd_soc_card snd_rpi_wm8804;
++
++
++#define CLK_44EN_RATE 22579200UL
++#define CLK_48EN_RATE 24576000UL
++
++static unsigned int snd_rpi_wm8804_enable_clock(unsigned int samplerate)
++{
++	switch (samplerate) {
++	case 11025:
++	case 22050:
++	case 44100:
++	case 88200:
++	case 176400:
++		gpiod_set_value_cansleep(snd_clk44gpio, 1);
++		gpiod_set_value_cansleep(snd_clk48gpio, 0);
++		return CLK_44EN_RATE;
++	default:
++		gpiod_set_value_cansleep(snd_clk48gpio, 1);
++		gpiod_set_value_cansleep(snd_clk44gpio, 0);
++		return CLK_48EN_RATE;
++	}
++}
++
++static void snd_rpi_wm8804_clk_cfg(unsigned int samplerate,
++		struct wm8804_clk_cfg *clk_cfg)
++{
++	clk_cfg->sysclk_freq = 27000000;
++
++	if (samplerate <= 96000 ||
++	    snd_rpi_wm8804.dai_link == snd_allo_digione_dai) {
++		clk_cfg->mclk_freq = samplerate * 256;
++		clk_cfg->mclk_div = WM8804_MCLKDIV_256FS;
++	} else {
++		clk_cfg->mclk_freq = samplerate * 128;
++		clk_cfg->mclk_div = WM8804_MCLKDIV_128FS;
++	}
++
++	if (!(IS_ERR(snd_clk44gpio) || IS_ERR(snd_clk48gpio)))
++		clk_cfg->sysclk_freq = snd_rpi_wm8804_enable_clock(samplerate);
++}
++
++static int snd_rpi_wm8804_hw_params(struct snd_pcm_substream *substream,
++		struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
++	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
++	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
++	int sampling_freq = 1;
++	int ret;
++	struct wm8804_clk_cfg clk_cfg;
++	int samplerate = params_rate(params);
++
++	if (samplerate == wm8804_samplerate)
++		return 0;
++
++	/* clear until all clocks are setup properly */
++	wm8804_samplerate = 0;
++
++	snd_rpi_wm8804_clk_cfg(samplerate, &clk_cfg);
++
++	pr_debug("%s samplerate: %d mclk_freq: %u mclk_div: %u sysclk: %u\n",
++			__func__, samplerate, clk_cfg.mclk_freq,
++			clk_cfg.mclk_div, clk_cfg.sysclk_freq);
++
++	switch (samplerate) {
++	case 32000:
++		sampling_freq = 0x03;
++		break;
++	case 44100:
++		sampling_freq = 0x00;
++		break;
++	case 48000:
++		sampling_freq = 0x02;
++		break;
++	case 88200:
++		sampling_freq = 0x08;
++		break;
++	case 96000:
++		sampling_freq = 0x0a;
++		break;
++	case 176400:
++		sampling_freq = 0x0c;
++		break;
++	case 192000:
++		sampling_freq = 0x0e;
++		break;
++	default:
++		dev_err(rtd->card->dev,
++		"Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
++		samplerate);
++	}
++
++	snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, clk_cfg.mclk_div);
++	snd_soc_dai_set_pll(codec_dai, 0, 0,
++			clk_cfg.sysclk_freq, clk_cfg.mclk_freq);
++
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
++			clk_cfg.sysclk_freq, SND_SOC_CLOCK_OUT);
++	if (ret < 0) {
++		dev_err(rtd->card->dev,
++		"Failed to set WM8804 SYSCLK: %d\n", ret);
++		return ret;
++	}
++
++	wm8804_samplerate = samplerate;
++
++	/* set sampling frequency status bits */
++	snd_soc_component_update_bits(component, WM8804_SPDTX4, 0x0f,
++			sampling_freq);
++
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
++}
++
++static struct snd_soc_ops snd_rpi_wm8804_ops = {
++	.hw_params = snd_rpi_wm8804_hw_params,
++};
++
++SND_SOC_DAILINK_DEFS(justboom_digi,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_justboom_digi_dai[] = {
++{
++	.name        = "JustBoom Digi",
++	.stream_name = "JustBoom Digi HiFi",
++	SND_SOC_DAILINK_REG(justboom_digi),
++},
++};
++
++static struct snd_rpi_wm8804_drvdata drvdata_justboom_digi = {
++	.card_name            = "snd_rpi_justboom_digi",
++	.dai                  = snd_justboom_digi_dai,
++};
++
++SND_SOC_DAILINK_DEFS(iqaudio_digi,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_iqaudio_digi_dai[] = {
++{
++	.name        = "IQAudIO Digi",
++	.stream_name = "IQAudIO Digi HiFi",
++	SND_SOC_DAILINK_REG(iqaudio_digi),
++},
++};
++
++static struct snd_rpi_wm8804_drvdata drvdata_iqaudio_digi = {
++	.card_name          = "IQAudIODigi",
++	.dai                = snd_iqaudio_digi_dai,
++	.card_name_dt       = "wm8804-digi,card-name",
++	.dai_name_dt        = "wm8804-digi,dai-name",
++	.dai_stream_name_dt = "wm8804-digi,dai-stream-name",
++};
++
++static int snd_allo_digione_probe(struct platform_device *pdev)
++{
++	pr_debug("%s\n", __func__);
++
++	if (IS_ERR(snd_clk44gpio) || IS_ERR(snd_clk48gpio)) {
++		dev_err(&pdev->dev, "devm_gpiod_get() failed\n");
++		return -EINVAL;
++	}
++	return 0;
++}
++
++SND_SOC_DAILINK_DEFS(allo_digione,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_allo_digione_dai[] = {
++{
++	.name        = "Allo DigiOne",
++	.stream_name = "Allo DigiOne HiFi",
++	SND_SOC_DAILINK_REG(allo_digione),
++},
++};
++
++static struct snd_rpi_wm8804_drvdata drvdata_allo_digione = {
++	.card_name = "snd_allo_digione",
++	.dai       = snd_allo_digione_dai,
++	.probe     = snd_allo_digione_probe,
++};
++
++SND_SOC_DAILINK_DEFS(hifiberry_digi,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_hifiberry_digi_dai[] = {
++{
++	.name        = "HifiBerry Digi",
++	.stream_name = "HifiBerry Digi HiFi",
++	SND_SOC_DAILINK_REG(hifiberry_digi),
++},
++};
++
++static int snd_hifiberry_digi_probe(struct platform_device *pdev)
++{
++	pr_debug("%s\n", __func__);
++
++	if (IS_ERR(snd_clk44gpio) || IS_ERR(snd_clk48gpio))
++		return 0;
++
++	snd_hifiberry_digi_dai->name = "HiFiBerry Digi+ Pro";
++	snd_hifiberry_digi_dai->stream_name = "HiFiBerry Digi+ Pro HiFi";
++	return 0;
++}
++
++static struct snd_rpi_wm8804_drvdata drvdata_hifiberry_digi = {
++	.card_name = "snd_rpi_hifiberry_digi",
++	.dai       = snd_hifiberry_digi_dai,
++	.probe     = snd_hifiberry_digi_probe,
++};
++
++static const struct of_device_id snd_rpi_wm8804_of_match[] = {
++	{ .compatible = "justboom,justboom-digi",
++		.data = (void *) &drvdata_justboom_digi },
++	{ .compatible = "iqaudio,wm8804-digi",
++		.data = (void *) &drvdata_iqaudio_digi },
++	{ .compatible = "allo,allo-digione",
++		.data = (void *) &drvdata_allo_digione },
++	{ .compatible = "hifiberry,hifiberry-digi",
++		.data = (void *) &drvdata_hifiberry_digi },
++	{},
++};
++
++static struct snd_soc_card snd_rpi_wm8804 = {
++	.driver_name  = "RPi-WM8804",
++	.owner        = THIS_MODULE,
++	.dai_link     = NULL,
++	.num_links    = 1,
++};
++
++static int snd_rpi_wm8804_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	const struct of_device_id *of_id;
++
++	snd_rpi_wm8804.dev = &pdev->dev;
++	of_id = of_match_node(snd_rpi_wm8804_of_match, pdev->dev.of_node);
++
++	if (pdev->dev.of_node && of_id->data) {
++		struct device_node *i2s_node;
++		struct snd_rpi_wm8804_drvdata *drvdata =
++			(struct snd_rpi_wm8804_drvdata *) of_id->data;
++		struct snd_soc_dai_link *dai = drvdata->dai;
++
++		snd_soc_card_set_drvdata(&snd_rpi_wm8804, drvdata);
++
++		if (!dai->ops)
++			dai->ops = &snd_rpi_wm8804_ops;
++		if (!dai->codecs->dai_name)
++			dai->codecs->dai_name = "wm8804-spdif";
++		if (!dai->codecs->name)
++			dai->codecs->name = "wm8804.1-003b";
++		if (!dai->dai_fmt)
++			dai->dai_fmt = SND_SOC_DAIFMT_I2S |
++				SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBM_CFM;
++
++		snd_rpi_wm8804.dai_link = dai;
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++				"i2s-controller", 0);
++		if (!i2s_node) {
++			pr_err("Failed to find i2s-controller DT node\n");
++			return -ENODEV;
++		}
++
++		snd_rpi_wm8804.name = drvdata->card_name;
++
++		/* If requested by in drvdata get card & DAI names from DT */
++		if (drvdata->card_name_dt)
++			of_property_read_string(i2s_node,
++					drvdata->card_name_dt,
++					&snd_rpi_wm8804.name);
++
++		if (drvdata->dai_name_dt)
++			of_property_read_string(i2s_node,
++					drvdata->dai_name_dt,
++					&dai->name);
++
++		if (drvdata->dai_stream_name_dt)
++			of_property_read_string(i2s_node,
++					drvdata->dai_stream_name_dt,
++					&dai->stream_name);
++
++		dai->cpus->of_node = i2s_node;
++		dai->platforms->of_node = i2s_node;
++
++		/*
++		 * clk44gpio and clk48gpio are not required by all cards so
++		 * don't check the error status.
++		 */
++		snd_clk44gpio =
++			devm_gpiod_get(&pdev->dev, "clock44", GPIOD_OUT_LOW);
++
++		snd_clk48gpio =
++			devm_gpiod_get(&pdev->dev, "clock48", GPIOD_OUT_LOW);
++
++		if (drvdata->probe) {
++			ret = drvdata->probe(pdev);
++			if (ret < 0) {
++				dev_err(&pdev->dev, "Custom probe failed %d\n",
++						ret);
++				return ret;
++			}
++		}
++
++		pr_debug("%s card: %s dai: %s stream: %s\n", __func__,
++				snd_rpi_wm8804.name,
++				dai->name, dai->stream_name);
++	}
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_wm8804);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev, "Failed to register card %d\n", ret);
++
++	return ret;
++}
++
++static struct platform_driver snd_rpi_wm8804_driver = {
++	.driver = {
++		.name           = "snd-rpi-wm8804",
++		.owner          = THIS_MODULE,
++		.of_match_table = snd_rpi_wm8804_of_match,
++	},
++	.probe  = snd_rpi_wm8804_probe,
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_wm8804_of_match);
++
++module_platform_driver(snd_rpi_wm8804_driver);
++
++MODULE_AUTHOR("Tim Gover <tim.gover@raspberrypi.org>");
++MODULE_DESCRIPTION("ASoC Raspberry Pi Hat generic digi driver for WM8804 based cards");
++MODULE_LICENSE("GPL v2");
+--- a/sound/soc/codecs/Kconfig
++++ b/sound/soc/codecs/Kconfig
+@@ -102,6 +102,7 @@ config SND_SOC_ALL_CODECS
+ 	imply SND_SOC_ICS43432
+ 	imply SND_SOC_INNO_RK3036
+ 	imply SND_SOC_ISABELLE
++	imply SND_SOC_I_SABRE_CODEC
+ 	imply SND_SOC_JZ4740_CODEC
+ 	imply SND_SOC_JZ4725B_CODEC
+ 	imply SND_SOC_JZ4760_CODEC
+@@ -109,6 +110,7 @@ config SND_SOC_ALL_CODECS
+ 	imply SND_SOC_LM4857
+ 	imply SND_SOC_LM49453
+ 	imply SND_SOC_LOCHNAGAR_SC
++	imply SND_SOC_MA120X0P
+ 	imply SND_SOC_MAX98088
+ 	imply SND_SOC_MAX98090
+ 	imply SND_SOC_MAX98095
+@@ -146,6 +148,7 @@ config SND_SOC_ALL_CODECS
+ 	imply SND_SOC_PCM179X_SPI
+ 	imply SND_SOC_PCM186X_I2C
+ 	imply SND_SOC_PCM186X_SPI
++	imply SND_SOC_PCM1794A
+ 	imply SND_SOC_PCM3008
+ 	imply SND_SOC_PCM3060_I2C
+ 	imply SND_SOC_PCM3060_SPI
+@@ -217,6 +220,7 @@ config SND_SOC_ALL_CODECS
+ 	imply SND_SOC_TLV320ADCX140
+ 	imply SND_SOC_TLV320AIC23_I2C
+ 	imply SND_SOC_TLV320AIC23_SPI
++	imply SND_SOC_TAS5713
+ 	imply SND_SOC_TLV320AIC26
+ 	imply SND_SOC_TLV320AIC31XX
+ 	imply SND_SOC_TLV320AIC32X4_I2C
+@@ -358,12 +362,12 @@ config SND_SOC_AD193X
+ 	tristate
+ 
+ config SND_SOC_AD193X_SPI
+-	tristate
++	tristate "Analog Devices AU193X CODEC - SPI"
+ 	depends on SPI_MASTER
+ 	select SND_SOC_AD193X
+ 
+ config SND_SOC_AD193X_I2C
+-	tristate
++	tristate "Analog Devices AU193X CODEC - I2C"
+ 	depends on I2C
+ 	select SND_SOC_AD193X
+ 
+@@ -873,6 +877,13 @@ config SND_SOC_LOCHNAGAR_SC
+ 	  This driver support the sound card functionality of the Cirrus
+ 	  Logic Lochnagar audio development board.
+ 
++config SND_SOC_MA120X0P
++	tristate "Infineon Merus(TM) MA120X0P Multilevel Class-D Audio amplifiers"
++	depends on I2C
++	help
++		Enable support for Infineon MA120X0P Multilevel Class-D audio power
++		amplifiers.
++
+ config SND_SOC_MADERA
+ 	tristate
+ 	default y if SND_SOC_CS47L15=y
+@@ -1189,6 +1200,10 @@ config SND_SOC_RT5616
+ 	tristate "Realtek RT5616 CODEC"
+ 	depends on I2C
+ 
++config SND_SOC_PCM1794A
++	tristate
++	depends on I2C
++
+ config SND_SOC_RT5631
+ 	tristate "Realtek ALC5631/RT5631 CODEC"
+ 	depends on I2C
+@@ -1439,6 +1454,9 @@ config SND_SOC_TFA9879
+ 	tristate "NXP Semiconductors TFA9879 amplifier"
+ 	depends on I2C
+ 
++config SND_SOC_TAS5713
++	tristate
++
+ config SND_SOC_TFA989X
+ 	tristate "NXP/Goodix TFA989X (TFA1) amplifiers"
+ 	depends on I2C
+@@ -1945,4 +1963,8 @@ config SND_SOC_LPASS_TX_MACRO
+ 	select REGMAP_MMIO
+ 	tristate "Qualcomm TX Macro in LPASS(Low Power Audio SubSystem)"
+ 
++config SND_SOC_I_SABRE_CODEC
++	tristate "Audiophonics I-SABRE Codec"
++	depends on I2C
++
+ endmenu
+--- a/sound/soc/codecs/Makefile
++++ b/sound/soc/codecs/Makefile
+@@ -99,6 +99,7 @@ snd-soc-hdac-hda-objs := hdac_hda.o
+ snd-soc-ics43432-objs := ics43432.o
+ snd-soc-inno-rk3036-objs := inno_rk3036.o
+ snd-soc-isabelle-objs := isabelle.o
++snd-soc-i-sabre-codec-objs := i-sabre-codec.o
+ snd-soc-jz4740-codec-objs := jz4740.o
+ snd-soc-jz4725b-codec-objs := jz4725b.o
+ snd-soc-jz4760-codec-objs := jz4760.o
+@@ -111,6 +112,7 @@ snd-soc-lpass-rx-macro-objs := lpass-rx-
+ snd-soc-lpass-tx-macro-objs := lpass-tx-macro.o
+ snd-soc-lpass-wsa-macro-objs := lpass-wsa-macro.o
+ snd-soc-lpass-va-macro-objs := lpass-va-macro.o
++snd-soc-ma120x0p-objs := ma120x0p.o
+ snd-soc-madera-objs := madera.o
+ snd-soc-max9759-objs := max9759.o
+ snd-soc-max9768-objs := max9768.o
+@@ -154,6 +156,7 @@ snd-soc-pcm179x-spi-objs := pcm179x-spi.
+ snd-soc-pcm186x-objs := pcm186x.o
+ snd-soc-pcm186x-i2c-objs := pcm186x-i2c.o
+ snd-soc-pcm186x-spi-objs := pcm186x-spi.o
++snd-soc-pcm1794a-objs := pcm1794a.o
+ snd-soc-pcm3008-objs := pcm3008.o
+ snd-soc-pcm3060-objs := pcm3060.o
+ snd-soc-pcm3060-i2c-objs := pcm3060-i2c.o
+@@ -231,6 +234,7 @@ snd-soc-tas6424-objs := tas6424.o
+ snd-soc-tda7419-objs := tda7419.o
+ snd-soc-tas2770-objs := tas2770.o
+ snd-soc-tfa9879-objs := tfa9879.o
++snd-soc-tas5713-objs := tas5713.o
+ snd-soc-tfa989x-objs := tfa989x.o
+ snd-soc-tlv320aic23-objs := tlv320aic23.o
+ snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
+@@ -430,6 +434,7 @@ obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-so
+ obj-$(CONFIG_SND_SOC_ICS43432)	+= snd-soc-ics43432.o
+ obj-$(CONFIG_SND_SOC_INNO_RK3036)	+= snd-soc-inno-rk3036.o
+ obj-$(CONFIG_SND_SOC_ISABELLE)	+= snd-soc-isabelle.o
++obj-$(CONFIG_SND_SOC_I_SABRE_CODEC)	+= snd-soc-i-sabre-codec.o
+ obj-$(CONFIG_SND_SOC_JZ4740_CODEC)	+= snd-soc-jz4740-codec.o
+ obj-$(CONFIG_SND_SOC_JZ4725B_CODEC)	+= snd-soc-jz4725b-codec.o
+ obj-$(CONFIG_SND_SOC_JZ4760_CODEC)      += snd-soc-jz4760-codec.o
+@@ -438,6 +443,7 @@ obj-$(CONFIG_SND_SOC_L3)	+= snd-soc-l3.o
+ obj-$(CONFIG_SND_SOC_LM4857)	+= snd-soc-lm4857.o
+ obj-$(CONFIG_SND_SOC_LM49453)   += snd-soc-lm49453.o
+ obj-$(CONFIG_SND_SOC_LOCHNAGAR_SC)	+= snd-soc-lochnagar-sc.o
++obj-$(CONFIG_SND_SOC_MA120X0P)   += snd-soc-ma120x0p.o
+ obj-$(CONFIG_SND_SOC_MADERA)	+= snd-soc-madera.o
+ obj-$(CONFIG_SND_SOC_MAX9759)	+= snd-soc-max9759.o
+ obj-$(CONFIG_SND_SOC_MAX9768)	+= snd-soc-max9768.o
+@@ -492,6 +498,7 @@ obj-$(CONFIG_SND_SOC_PCM5102A)	+= snd-so
+ obj-$(CONFIG_SND_SOC_PCM512x)	+= snd-soc-pcm512x.o
+ obj-$(CONFIG_SND_SOC_PCM512x_I2C)	+= snd-soc-pcm512x-i2c.o
+ obj-$(CONFIG_SND_SOC_PCM512x_SPI)	+= snd-soc-pcm512x-spi.o
++obj-$(CONFIG_SND_SOC_PCM1794A)	+= snd-soc-pcm1794a.o
+ obj-$(CONFIG_SND_SOC_RK3328)	+= snd-soc-rk3328.o
+ obj-$(CONFIG_SND_SOC_RK817)	+= snd-soc-rk817.o
+ obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o
+@@ -558,6 +565,7 @@ obj-$(CONFIG_SND_SOC_TAS5720)	+= snd-soc
+ obj-$(CONFIG_SND_SOC_TAS6424)	+= snd-soc-tas6424.o
+ obj-$(CONFIG_SND_SOC_TDA7419)	+= snd-soc-tda7419.o
+ obj-$(CONFIG_SND_SOC_TAS2770) += snd-soc-tas2770.o
++obj-$(CONFIG_SND_SOC_TAS5713)	+= snd-soc-tas5713.o
+ obj-$(CONFIG_SND_SOC_TFA9879)	+= snd-soc-tfa9879.o
+ obj-$(CONFIG_SND_SOC_TFA989X)	+= snd-soc-tfa989x.o
+ obj-$(CONFIG_SND_SOC_TLV320AIC23)	+= snd-soc-tlv320aic23.o
+--- a/sound/soc/codecs/cs42xx8-i2c.c
++++ b/sound/soc/codecs/cs42xx8-i2c.c
+@@ -45,11 +45,18 @@ static struct i2c_device_id cs42xx8_i2c_
+ };
+ MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
+ 
++const struct of_device_id cs42xx8_i2c_of_match[] = {
++	{ .compatible = "cirrus,cs42448", .data = &cs42448_data, },
++	{ .compatible = "cirrus,cs42888", .data = &cs42888_data, },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, cs42xx8_i2c_of_match);
++
+ static struct i2c_driver cs42xx8_i2c_driver = {
+ 	.driver = {
+ 		.name = "cs42xx8",
+ 		.pm = &cs42xx8_pm,
+-		.of_match_table = cs42xx8_of_match,
++		.of_match_table = cs42xx8_i2c_of_match,
+ 	},
+ 	.probe = cs42xx8_i2c_probe,
+ 	.remove = cs42xx8_i2c_remove,
+--- a/sound/soc/codecs/cs42xx8.c
++++ b/sound/soc/codecs/cs42xx8.c
+@@ -517,8 +517,10 @@ const struct of_device_id cs42xx8_of_mat
+ 	{ .compatible = "cirrus,cs42888", .data = &cs42888_data, },
+ 	{ /* sentinel */ }
+ };
++#if !IS_ENABLED(CONFIG_SND_SOC_CS42XX8_I2C)
+ MODULE_DEVICE_TABLE(of, cs42xx8_of_match);
+ EXPORT_SYMBOL_GPL(cs42xx8_of_match);
++#endif
+ 
+ int cs42xx8_probe(struct device *dev, struct regmap *regmap)
+ {
+--- /dev/null
++++ b/sound/soc/codecs/i-sabre-codec.c
+@@ -0,0 +1,392 @@
++/*
++ * Driver for I-Sabre Q2M
++ *
++ * Author: Satoru Kawase
++ * Modified by: Xiao Qingyong
++ * Modified by: JC BARBAUD (Mute)
++ * Update kernel v4.18+ by : Audiophonics
++ * 		Copyright 2018 Audiophonics
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/regmap.h>
++#include <linux/i2c.h>
++#include <sound/soc.h>
++#include <sound/pcm_params.h>
++#include <sound/tlv.h>
++
++#include "i-sabre-codec.h"
++
++
++/* I-Sabre Q2M Codec Private Data */
++struct i_sabre_codec_priv {
++	struct regmap *regmap;
++	unsigned int fmt;
++};
++
++
++/* I-Sabre Q2M Codec Default Register Value */
++static const struct reg_default i_sabre_codec_reg_defaults[] = {
++	{ ISABRECODEC_REG_10, 0x00 },
++	{ ISABRECODEC_REG_20, 0x00 },
++	{ ISABRECODEC_REG_21, 0x00 },
++	{ ISABRECODEC_REG_22, 0x00 },
++	{ ISABRECODEC_REG_24, 0x00 },
++};
++
++
++static bool i_sabre_codec_writeable(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++	case ISABRECODEC_REG_10:
++	case ISABRECODEC_REG_20:
++	case ISABRECODEC_REG_21:
++	case ISABRECODEC_REG_22:
++	case ISABRECODEC_REG_24:
++		return true;
++
++	default:
++		return false;
++	}
++}
++
++static bool i_sabre_codec_readable(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++	case ISABRECODEC_REG_01:
++	case ISABRECODEC_REG_02:
++	case ISABRECODEC_REG_10:
++	case ISABRECODEC_REG_20:
++	case ISABRECODEC_REG_21:
++	case ISABRECODEC_REG_22:
++	case ISABRECODEC_REG_24:
++		return true;
++
++	default:
++		return false;
++	}
++}
++
++static bool i_sabre_codec_volatile(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++	case ISABRECODEC_REG_01:
++	case ISABRECODEC_REG_02:
++		return true;
++
++	default:
++		return false;
++	}
++}
++
++
++/* Volume Scale */
++static const DECLARE_TLV_DB_SCALE(volume_tlv, -10000, 100, 0);
++
++
++/* Filter Type */
++static const char * const fir_filter_type_texts[] = {
++	"brick wall",
++	"corrected minimum phase fast",
++	"minimum phase slow",
++	"minimum phase fast",
++	"linear phase slow",
++	"linear phase fast",
++	"apodizing fast",
++};
++
++static SOC_ENUM_SINGLE_DECL(i_sabre_fir_filter_type_enum,
++				ISABRECODEC_REG_22, 0, fir_filter_type_texts);
++
++
++/* I2S / SPDIF Select */
++static const char * const iis_spdif_sel_texts[] = {
++	"I2S",
++	"SPDIF",
++};
++
++static SOC_ENUM_SINGLE_DECL(i_sabre_iis_spdif_sel_enum,
++				ISABRECODEC_REG_24, 0, iis_spdif_sel_texts);
++
++
++/* Control */
++static const struct snd_kcontrol_new i_sabre_codec_controls[] = {
++SOC_SINGLE_RANGE_TLV("Digital Playback Volume", ISABRECODEC_REG_20, 0, 0, 100, 1, volume_tlv),
++SOC_SINGLE("Digital Playback Switch", ISABRECODEC_REG_21, 0, 1, 1),
++SOC_ENUM("FIR Filter Type", i_sabre_fir_filter_type_enum),
++SOC_ENUM("I2S/SPDIF Select", i_sabre_iis_spdif_sel_enum),
++};
++
++
++static const u32 i_sabre_codec_dai_rates_slave[] = {
++	8000, 11025, 16000, 22050, 32000,
++	44100, 48000, 64000, 88200, 96000,
++	176400, 192000, 352800, 384000,
++	705600, 768000, 1411200, 1536000
++};
++
++static const struct snd_pcm_hw_constraint_list constraints_slave = {
++	.list  = i_sabre_codec_dai_rates_slave,
++	.count = ARRAY_SIZE(i_sabre_codec_dai_rates_slave),
++};
++
++static int i_sabre_codec_dai_startup_slave(
++		struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
++{
++	struct snd_soc_component *component = dai->component;
++	int ret;
++
++	ret = snd_pcm_hw_constraint_list(substream->runtime,
++			0, SNDRV_PCM_HW_PARAM_RATE, &constraints_slave);
++	if (ret != 0) {
++		dev_err(component->card->dev, "Failed to setup rates constraints: %d\n", ret);
++	}
++
++	return ret;
++}
++
++static int i_sabre_codec_dai_startup(
++		struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
++{
++	struct snd_soc_component      *component = dai->component;
++	struct i_sabre_codec_priv *i_sabre_codec
++					= snd_soc_component_get_drvdata(component);
++
++	switch (i_sabre_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
++	case SND_SOC_DAIFMT_CBS_CFS:
++		return i_sabre_codec_dai_startup_slave(substream, dai);
++
++	default:
++		return (-EINVAL);
++	}
++}
++
++static int i_sabre_codec_hw_params(
++	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params,
++	struct snd_soc_dai *dai)
++{
++	struct snd_soc_component      *component = dai->component;
++	struct i_sabre_codec_priv *i_sabre_codec
++					= snd_soc_component_get_drvdata(component);
++	unsigned int daifmt;
++	int format_width;
++
++	dev_dbg(component->card->dev, "hw_params %u Hz, %u channels\n",
++			params_rate(params), params_channels(params));
++
++	/* Check I2S Format (Bit Size) */
++	format_width = snd_pcm_format_width(params_format(params));
++	if ((format_width != 32) && (format_width != 16)) {
++		dev_err(component->card->dev, "Bad frame size: %d\n",
++				snd_pcm_format_width(params_format(params)));
++		return (-EINVAL);
++	}
++
++	/* Check Slave Mode */
++	daifmt = i_sabre_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK;
++	if (daifmt != SND_SOC_DAIFMT_CBS_CFS) {
++		return (-EINVAL);
++	}
++
++	/* Notify Sampling Frequency  */
++	switch (params_rate(params))
++	{
++	case 44100:
++	case 48000:
++	case 88200:
++	case 96000:
++	case 176400:
++	case 192000:
++		snd_soc_component_update_bits(component, ISABRECODEC_REG_10, 0x01, 0x00);
++		break;
++
++	case 352800:
++	case 384000:
++	case 705600:
++	case 768000:
++	case 1411200:
++	case 1536000:
++		snd_soc_component_update_bits(component, ISABRECODEC_REG_10, 0x01, 0x01);
++		break;
++	}
++
++	return 0;
++}
++
++static int i_sabre_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
++{
++	struct snd_soc_component      *component = dai->component;
++	struct i_sabre_codec_priv *i_sabre_codec
++					= snd_soc_component_get_drvdata(component);
++
++	/* interface format */
++	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
++	case SND_SOC_DAIFMT_I2S:
++		break;
++
++	case SND_SOC_DAIFMT_RIGHT_J:
++	case SND_SOC_DAIFMT_LEFT_J:
++	default:
++		return (-EINVAL);
++	}
++
++	/* clock inversion */
++	if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF) {
++		return (-EINVAL);
++	}
++
++	/* Set Audio Data Format */
++	i_sabre_codec->fmt = fmt;
++
++	return 0;
++}
++
++static int i_sabre_codec_dac_mute(struct snd_soc_dai *dai, int mute, int direction)
++{
++	struct snd_soc_component *component = dai->component;
++
++	if (mute) {
++		snd_soc_component_update_bits(component, ISABRECODEC_REG_21, 0x01, 0x01);
++	} else {
++		snd_soc_component_update_bits(component, ISABRECODEC_REG_21, 0x01, 0x00);
++	}
++
++	return 0;
++}
++
++
++static const struct snd_soc_dai_ops i_sabre_codec_dai_ops = {
++	.startup      = i_sabre_codec_dai_startup,
++	.hw_params    = i_sabre_codec_hw_params,
++	.set_fmt      = i_sabre_codec_set_fmt,
++	.mute_stream  = i_sabre_codec_dac_mute,
++};
++
++static struct snd_soc_dai_driver i_sabre_codec_dai = {
++	.name = "i-sabre-codec-dai",
++	.playback = {
++		.stream_name  = "Playback",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.rate_min = 8000,
++		.rate_max = 1536000,
++		.formats      = SNDRV_PCM_FMTBIT_S16_LE
++				| SNDRV_PCM_FMTBIT_S32_LE,
++	},
++	.ops = &i_sabre_codec_dai_ops,
++};
++
++static struct snd_soc_component_driver i_sabre_codec_codec_driver = {
++		.controls         = i_sabre_codec_controls,
++		.num_controls     = ARRAY_SIZE(i_sabre_codec_controls),
++};
++
++
++static const struct regmap_config i_sabre_codec_regmap = {
++	.reg_bits         = 8,
++	.val_bits         = 8,
++	.max_register     = ISABRECODEC_MAX_REG,
++
++	.reg_defaults     = i_sabre_codec_reg_defaults,
++	.num_reg_defaults = ARRAY_SIZE(i_sabre_codec_reg_defaults),
++
++	.writeable_reg    = i_sabre_codec_writeable,
++	.readable_reg     = i_sabre_codec_readable,
++	.volatile_reg     = i_sabre_codec_volatile,
++
++	.cache_type       = REGCACHE_RBTREE,
++};
++
++
++static int i_sabre_codec_probe(struct device *dev, struct regmap *regmap)
++{
++	struct i_sabre_codec_priv *i_sabre_codec;
++	int ret;
++
++	i_sabre_codec = devm_kzalloc(dev, sizeof(*i_sabre_codec), GFP_KERNEL);
++	if (!i_sabre_codec) {
++		dev_err(dev, "devm_kzalloc");
++		return (-ENOMEM);
++	}
++
++	i_sabre_codec->regmap = regmap;
++
++	dev_set_drvdata(dev, i_sabre_codec);
++
++	ret = snd_soc_register_component(dev,
++			&i_sabre_codec_codec_driver, &i_sabre_codec_dai, 1);
++	if (ret != 0) {
++		dev_err(dev, "Failed to register CODEC: %d\n", ret);
++		return ret;
++	}
++
++	return 0;
++}
++
++static void i_sabre_codec_remove(struct device *dev)
++{
++	snd_soc_unregister_component(dev);
++}
++
++
++static int i_sabre_codec_i2c_probe(
++		struct i2c_client *i2c, const struct i2c_device_id *id)
++{
++	struct regmap *regmap;
++
++	regmap = devm_regmap_init_i2c(i2c, &i_sabre_codec_regmap);
++	if (IS_ERR(regmap)) {
++		return PTR_ERR(regmap);
++	}
++
++	return i_sabre_codec_probe(&i2c->dev, regmap);
++}
++
++static int i_sabre_codec_i2c_remove(struct i2c_client *i2c)
++{
++	i_sabre_codec_remove(&i2c->dev);
++
++	return 0;
++}
++
++
++static const struct i2c_device_id i_sabre_codec_i2c_id[] = {
++	{ "i-sabre-codec", },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, i_sabre_codec_i2c_id);
++
++static const struct of_device_id i_sabre_codec_of_match[] = {
++	{ .compatible = "audiophonics,i-sabre-codec", },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, i_sabre_codec_of_match);
++
++static struct i2c_driver i_sabre_codec_i2c_driver = {
++	.driver = {
++		.name           = "i-sabre-codec-i2c",
++		.owner          = THIS_MODULE,
++		.of_match_table = of_match_ptr(i_sabre_codec_of_match),
++	},
++	.probe    = i_sabre_codec_i2c_probe,
++	.remove   = i_sabre_codec_i2c_remove,
++	.id_table = i_sabre_codec_i2c_id,
++};
++module_i2c_driver(i_sabre_codec_i2c_driver);
++
++
++MODULE_DESCRIPTION("ASoC I-Sabre Q2M codec driver");
++MODULE_AUTHOR("Audiophonics <http://www.audiophonics.fr>");
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/sound/soc/codecs/i-sabre-codec.h
+@@ -0,0 +1,42 @@
++/*
++ * Driver for I-Sabre Q2M
++ *
++ * Author: Satoru Kawase
++ * Modified by: Xiao Qingyong
++ *      Copyright 2018 Audiophonics
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#ifndef _SND_SOC_ISABRECODEC
++#define _SND_SOC_ISABRECODEC
++
++
++/* ISABRECODEC Register Address */
++#define ISABRECODEC_REG_01	0x01	/* Virtual Device ID  :  0x01 = es9038q2m */
++#define ISABRECODEC_REG_02	0x02	/* API revision       :  0x01 = Revision 01 */
++#define ISABRECODEC_REG_10	0x10	/* 0x01 = above 192kHz, 0x00 = otherwise */
++#define ISABRECODEC_REG_20	0x20	/* 0 - 100 (decimal value, 0 = min., 100 = max.) */
++#define ISABRECODEC_REG_21	0x21	/* 0x00 = Mute OFF, 0x01 = Mute ON */
++#define ISABRECODEC_REG_22	0x22	
++/*
++   0x00 = brick wall,
++   0x01 = corrected minimum phase fast,
++   0x02 = minimum phase slow,
++   0x03 = minimum phase fast,
++   0x04 = linear phase slow,
++   0x05 = linear phase fast,
++   0x06 = apodizing fast,
++*/
++//#define ISABRECODEC_REG_23	0x23	/* reserved */
++#define ISABRECODEC_REG_24	0x24	/* 0x00 = I2S, 0x01 = SPDIF */
++#define ISABRECODEC_MAX_REG	0x24	/* Maximum Register Number */
++
++#endif /* _SND_SOC_ISABRECODEC */
+--- /dev/null
++++ b/sound/soc/codecs/ma120x0p.c
+@@ -0,0 +1,1384 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++/*
++ * ASoC Driver for Infineon Merus(TM) ma120x0p multi-level class-D amplifier
++ *
++ * Authors:	Ariel Muszkat <ariel.muszkat@gmail.com>
++ * Jorgen Kragh Jakobsen <jorgen.kraghjakobsen@infineon.com>
++ *
++ * Copyright (C) 2019 Infineon Technologies AG
++ *
++ */
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/pm_runtime.h>
++#include <linux/i2c.h>
++#include <linux/of_device.h>
++#include <linux/spi/spi.h>
++#include <linux/regmap.h>
++#include <linux/regulator/consumer.h>
++#include <linux/slab.h>
++#include <linux/gpio/consumer.h>
++#include <linux/gpio.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/soc-dapm.h>
++#include <sound/initval.h>
++#include <sound/tlv.h>
++#include <linux/interrupt.h>
++
++#include <linux/kernel.h>
++#include <linux/string.h>
++#include <linux/fs.h>
++#include <linux/uaccess.h>
++
++#ifndef _MA120X0P_
++#define _MA120X0P_
++//------------------------------------------------------------------manualPM---
++// Select Manual PowerMode control
++#define ma_manualpm__a 0
++#define ma_manualpm__len 1
++#define ma_manualpm__mask 0x40
++#define ma_manualpm__shift 0x06
++#define ma_manualpm__reset 0x00
++//--------------------------------------------------------------------pm_man---
++// manual selected power mode
++#define ma_pm_man__a 0
++#define ma_pm_man__len 2
++#define ma_pm_man__mask 0x30
++#define ma_pm_man__shift 0x04
++#define ma_pm_man__reset 0x03
++//------------------------------------------ ----------------------mthr_1to2---
++// mod. index threshold value for pm1=>pm2 change.
++#define ma_mthr_1to2__a 1
++#define ma_mthr_1to2__len 8
++#define ma_mthr_1to2__mask 0xff
++#define ma_mthr_1to2__shift 0x00
++#define ma_mthr_1to2__reset 0x3c
++//-----------------------------------------------------------------mthr_2to1---
++// mod. index threshold value for pm2=>pm1 change.
++#define ma_mthr_2to1__a 2
++#define ma_mthr_2to1__len 8
++#define ma_mthr_2to1__mask 0xff
++#define ma_mthr_2to1__shift 0x00
++#define ma_mthr_2to1__reset 0x32
++//-----------------------------------------------------------------mthr_2to3---
++// mod. index threshold value for pm2=>pm3 change.
++#define ma_mthr_2to3__a 3
++#define ma_mthr_2to3__len 8
++#define ma_mthr_2to3__mask 0xff
++#define ma_mthr_2to3__shift 0x00
++#define ma_mthr_2to3__reset 0x5a
++//-----------------------------------------------------------------mthr_3to2---
++// mod. index threshold value for pm3=>pm2 change.
++#define ma_mthr_3to2__a 4
++#define ma_mthr_3to2__len 8
++#define ma_mthr_3to2__mask 0xff
++#define ma_mthr_3to2__shift 0x00
++#define ma_mthr_3to2__reset 0x50
++//-------------------------------------------------------------pwmclkdiv_nom---
++// pwm default clock divider value
++#define ma_pwmclkdiv_nom__a 8
++#define ma_pwmclkdiv_nom__len 8
++#define ma_pwmclkdiv_nom__mask 0xff
++#define ma_pwmclkdiv_nom__shift 0x00
++#define ma_pwmclkdiv_nom__reset 0x26
++//--------- ----------------------------------------------------ocp_latch_en---
++// high to use permanently latching level-2 ocp
++#define ma_ocp_latch_en__a 10
++#define ma_ocp_latch_en__len 1
++#define ma_ocp_latch_en__mask 0x02
++#define ma_ocp_latch_en__shift 0x01
++#define ma_ocp_latch_en__reset 0x00
++//---------------------------------------------------------------lf_clamp_en---
++// high (default) to enable lf int2+3 clamping on clip
++#define ma_lf_clamp_en__a 10
++#define ma_lf_clamp_en__len 1
++#define ma_lf_clamp_en__mask 0x80
++#define ma_lf_clamp_en__shift 0x07
++#define ma_lf_clamp_en__reset 0x00
++//-------------------------------------------------------pmcfg_btl_b.modtype---
++//
++#define ma_pmcfg_btl_b__modtype__a 18
++#define ma_pmcfg_btl_b__modtype__len 2
++#define ma_pmcfg_btl_b__modtype__mask 0x18
++#define ma_pmcfg_btl_b__modtype__shift 0x03
++#define ma_pmcfg_btl_b__modtype__reset 0x02
++//-------------------------------------------------------pmcfg_btl_b.freqdiv---
++#define ma_pmcfg_btl_b__freqdiv__a 18
++#define ma_pmcfg_btl_b__freqdiv__len 2
++#define ma_pmcfg_btl_b__freqdiv__mask 0x06
++#define ma_pmcfg_btl_b__freqdiv__shift 0x01
++#define ma_pmcfg_btl_b__freqdiv__reset 0x01
++//----------------------------------------------------pmcfg_btl_b.lf_gain_ol---
++//
++#define ma_pmcfg_btl_b__lf_gain_ol__a 18
++#define ma_pmcfg_btl_b__lf_gain_ol__len 1
++#define ma_pmcfg_btl_b__lf_gain_ol__mask 0x01
++#define ma_pmcfg_btl_b__lf_gain_ol__shift 0x00
++#define ma_pmcfg_btl_b__lf_gain_ol__reset 0x01
++//-------------------------------------------------------pmcfg_btl_c.freqdiv---
++//
++#define ma_pmcfg_btl_c__freqdiv__a 19
++#define ma_pmcfg_btl_c__freqdiv__len 2
++#define ma_pmcfg_btl_c__freqdiv__mask 0x06
++#define ma_pmcfg_btl_c__freqdiv__shift 0x01
++#define ma_pmcfg_btl_c__freqdiv__reset 0x01
++//-------------------------------------------------------pmcfg_btl_c.modtype---
++//
++#define ma_pmcfg_btl_c__modtype__a 19
++#define ma_pmcfg_btl_c__modtype__len 2
++#define ma_pmcfg_btl_c__modtype__mask 0x18
++#define ma_pmcfg_btl_c__modtype__shift 0x03
++#define ma_pmcfg_btl_c__modtype__reset 0x01
++//----------------------------------------------------pmcfg_btl_c.lf_gain_ol---
++//
++#define ma_pmcfg_btl_c__lf_gain_ol__a 19
++#define ma_pmcfg_btl_c__lf_gain_ol__len 1
++#define ma_pmcfg_btl_c__lf_gain_ol__mask 0x01
++#define ma_pmcfg_btl_c__lf_gain_ol__shift 0x00
++#define ma_pmcfg_btl_c__lf_gain_ol__reset 0x00
++//-------------------------------------------------------pmcfg_btl_d.modtype---
++//
++#define ma_pmcfg_btl_d__modtype__a 20
++#define ma_pmcfg_btl_d__modtype__len 2
++#define ma_pmcfg_btl_d__modtype__mask 0x18
++#define ma_pmcfg_btl_d__modtype__shift 0x03
++#define ma_pmcfg_btl_d__modtype__reset 0x02
++//-------------------------------------------------------pmcfg_btl_d.freqdiv---
++//
++#define ma_pmcfg_btl_d__freqdiv__a 20
++#define ma_pmcfg_btl_d__freqdiv__len 2
++#define ma_pmcfg_btl_d__freqdiv__mask 0x06
++#define ma_pmcfg_btl_d__freqdiv__shift 0x01
++#define ma_pmcfg_btl_d__freqdiv__reset 0x02
++//----------------------------------------------------pmcfg_btl_d.lf_gain_ol---
++//
++#define ma_pmcfg_btl_d__lf_gain_ol__a 20
++#define ma_pmcfg_btl_d__lf_gain_ol__len 1
++#define ma_pmcfg_btl_d__lf_gain_ol__mask 0x01
++#define ma_pmcfg_btl_d__lf_gain_ol__shift 0x00
++#define ma_pmcfg_btl_d__lf_gain_ol__reset 0x00
++//------------ -------------------------------------------pmcfg_se_a.modtype---
++//
++#define ma_pmcfg_se_a__modtype__a 21
++#define ma_pmcfg_se_a__modtype__len 2
++#define ma_pmcfg_se_a__modtype__mask 0x18
++#define ma_pmcfg_se_a__modtype__shift 0x03
++#define ma_pmcfg_se_a__modtype__reset 0x01
++//--------------------------------------------------------pmcfg_se_a.freqdiv---
++//
++#define ma_pmcfg_se_a__freqdiv__a 21
++#define ma_pmcfg_se_a__freqdiv__len 2
++#define ma_pmcfg_se_a__freqdiv__mask 0x06
++#define ma_pmcfg_se_a__freqdiv__shift 0x01
++#define ma_pmcfg_se_a__freqdiv__reset 0x00
++//-----------------------------------------------------pmcfg_se_a.lf_gain_ol---
++//
++#define ma_pmcfg_se_a__lf_gain_ol__a 21
++#define ma_pmcfg_se_a__lf_gain_ol__len 1
++#define ma_pmcfg_se_a__lf_gain_ol__mask 0x01
++#define ma_pmcfg_se_a__lf_gain_ol__shift 0x00
++#define ma_pmcfg_se_a__lf_gain_ol__reset 0x01
++//-----------------------------------------------------pmcfg_se_b.lf_gain_ol---
++//
++#define ma_pmcfg_se_b__lf_gain_ol__a 22
++#define ma_pmcfg_se_b__lf_gain_ol__len 1
++#define ma_pmcfg_se_b__lf_gain_ol__mask 0x01
++#define ma_pmcfg_se_b__lf_gain_ol__shift 0x00
++#define ma_pmcfg_se_b__lf_gain_ol__reset 0x00
++//--------------------------------------------------------pmcfg_se_b.freqdiv---
++//
++#define ma_pmcfg_se_b__freqdiv__a 22
++#define ma_pmcfg_se_b__freqdiv__len 2
++#define ma_pmcfg_se_b__freqdiv__mask 0x06
++#define ma_pmcfg_se_b__freqdiv__shift 0x01
++#define ma_pmcfg_se_b__freqdiv__reset 0x01
++//--------------------------------------------------------pmcfg_se_b.modtype---
++//
++#define ma_pmcfg_se_b__modtype__a 22
++#define ma_pmcfg_se_b__modtype__len 2
++#define ma_pmcfg_se_b__modtype__mask 0x18
++#define ma_pmcfg_se_b__modtype__shift 0x03
++#define ma_pmcfg_se_b__modtype__reset 0x01
++//----------------------------------------------------------balwaitcount_pm1---
++// pm1 balancing period.
++#define ma_balwaitcount_pm1__a 23
++#define ma_balwaitcount_pm1__len 8
++#define ma_balwaitcount_pm1__mask 0xff
++#define ma_balwaitcount_pm1__shift 0x00
++#define ma_balwaitcount_pm1__reset 0x14
++//----------------------------------------------------------balwaitcount_pm2---
++// pm2 balancing period.
++#define ma_balwaitcount_pm2__a 24
++#define ma_balwaitcount_pm2__len 8
++#define ma_balwaitcount_pm2__mask 0xff
++#define ma_balwaitcount_pm2__shift 0x00
++#define ma_balwaitcount_pm2__reset 0x14
++//----------------------------------------------------------balwaitcount_pm3---
++// pm3 balancing period.
++#define ma_balwaitcount_pm3__a 25
++#define ma_balwaitcount_pm3__len 8
++#define ma_balwaitcount_pm3__mask 0xff
++#define ma_balwaitcount_pm3__shift 0x00
++#define ma_balwaitcount_pm3__reset 0x1a
++//-------------------------------------------------------------usespread_pm1---
++// pm1 pwm spread-spectrum mode on/off.
++#define ma_usespread_pm1__a 26
++#define ma_usespread_pm1__len 1
++#define ma_usespread_pm1__mask 0x40
++#define ma_usespread_pm1__shift 0x06
++#define ma_usespread_pm1__reset 0x00
++//---------------------------------------------------------------dtsteps_pm1---
++// pm1 dead time setting [10ns steps].
++#define ma_dtsteps_pm1__a 26
++#define ma_dtsteps_pm1__len 3
++#define ma_dtsteps_pm1__mask 0x38
++#define ma_dtsteps_pm1__shift 0x03
++#define ma_dtsteps_pm1__reset 0x04
++//---------------------------------------------------------------baltype_pm1---
++// pm1 balancing sensor scheme.
++#define ma_baltype_pm1__a 26
++#define ma_baltype_pm1__len 3
++#define ma_baltype_pm1__mask 0x07
++#define ma_baltype_pm1__shift 0x00
++#define ma_baltype_pm1__reset 0x00
++//-------------------------------------------------------------usespread_pm2---
++// pm2 pwm spread-spectrum mode on/off.
++#define ma_usespread_pm2__a 27
++#define ma_usespread_pm2__len 1
++#define ma_usespread_pm2__mask 0x40
++#define ma_usespread_pm2__shift 0x06
++#define ma_usespread_pm2__reset 0x00
++//---------------------------------------------------------------dtsteps_pm2---
++// pm2 dead time setting [10ns steps].
++#define ma_dtsteps_pm2__a 27
++#define ma_dtsteps_pm2__len 3
++#define ma_dtsteps_pm2__mask 0x38
++#define ma_dtsteps_pm2__shift 0x03
++#define ma_dtsteps_pm2__reset 0x03
++//---------------------------------------------------------------baltype_pm2---
++// pm2 balancing sensor scheme.
++#define ma_baltype_pm2__a 27
++#define ma_baltype_pm2__len 3
++#define ma_baltype_pm2__mask 0x07
++#define ma_baltype_pm2__shift 0x00
++#define ma_baltype_pm2__reset 0x01
++//-------------------------------------------------------------usespread_pm3---
++// pm3 pwm spread-spectrum mode on/off.
++#define ma_usespread_pm3__a 28
++#define ma_usespread_pm3__len 1
++#define ma_usespread_pm3__mask 0x40
++#define ma_usespread_pm3__shift 0x06
++#define ma_usespread_pm3__reset 0x00
++//---------------------------------------------------------------dtsteps_pm3---
++// pm3 dead time setting [10ns steps].
++#define ma_dtsteps_pm3__a 28
++#define ma_dtsteps_pm3__len 3
++#define ma_dtsteps_pm3__mask 0x38
++#define ma_dtsteps_pm3__shift 0x03
++#define ma_dtsteps_pm3__reset 0x01
++//---------------------------------------------------------------baltype_pm3---
++// pm3 balancing sensor scheme.
++#define ma_baltype_pm3__a 28
++#define ma_baltype_pm3__len 3
++#define ma_baltype_pm3__mask 0x07
++#define ma_baltype_pm3__shift 0x00
++#define ma_baltype_pm3__reset 0x03
++//-----------------------------------------------------------------pmprofile---
++// pm profile select. valid presets: 0-1-2-3-4. 5=> custom profile.
++#define ma_pmprofile__a 29
++#define ma_pmprofile__len 3
++#define ma_pmprofile__mask 0x07
++#define ma_pmprofile__shift 0x00
++#define ma_pmprofile__reset 0x00
++//-------------------------------------------------------------------pm3_man---
++// custom profile pm3 contents. 0=>a,  1=>b,  2=>c,  3=>d
++#define ma_pm3_man__a 30
++#define ma_pm3_man__len 2
++#define ma_pm3_man__mask 0x30
++#define ma_pm3_man__shift 0x04
++#define ma_pm3_man__reset 0x02
++//-------------------------------------------------------------------pm2_man---
++// custom profile pm2 contents. 0=>a,  1=>b,  2=>c,  3=>d
++#define ma_pm2_man__a 30
++#define ma_pm2_man__len 2
++#define ma_pm2_man__mask 0x0c
++#define ma_pm2_man__shift 0x02
++#define ma_pm2_man__reset 0x03
++//-------------------------------------------------------------------pm1_man---
++// custom profile pm1 contents. 0=>a,  1=>b,  2=>c,  3=>d
++#define ma_pm1_man__a 30
++#define ma_pm1_man__len 2
++#define ma_pm1_man__mask 0x03
++#define ma_pm1_man__shift 0x00
++#define ma_pm1_man__reset 0x03
++//-----------------------------------------------------------ocp_latch_clear---
++// low-high clears current ocp latched condition.
++#define ma_ocp_latch_clear__a 32
++#define ma_ocp_latch_clear__len 1
++#define ma_ocp_latch_clear__mask 0x80
++#define ma_ocp_latch_clear__shift 0x07
++#define ma_ocp_latch_clear__reset 0x00
++//-------------------------------------------------------------audio_in_mode---
++// audio input mode; 0-1-2-3-4-5
++#define ma_audio_in_mode__a 37
++#define ma_audio_in_mode__len 3
++#define ma_audio_in_mode__mask 0xe0
++#define ma_audio_in_mode__shift 0x05
++#define ma_audio_in_mode__reset 0x00
++//-----------------------------------------------------------------eh_dcshdn---
++// high to enable dc protection
++#define ma_eh_dcshdn__a 38
++#define ma_eh_dcshdn__len 1
++#define ma_eh_dcshdn__mask 0x04
++#define ma_eh_dcshdn__shift 0x02
++#define ma_eh_dcshdn__reset 0x01
++//---------------------------------------------------------audio_in_mode_ext---
++// if set,  audio_in_mode is controlled from audio_in_mode register. if not set
++//audio_in_mode is set from fuse bank setting
++#define ma_audio_in_mode_ext__a 39
++#define ma_audio_in_mode_ext__len 1
++#define ma_audio_in_mode_ext__mask 0x20
++#define ma_audio_in_mode_ext__shift 0x05
++#define ma_audio_in_mode_ext__reset 0x00
++//------------------------------------------------------------------eh_clear---
++// flip to clear error registers
++#define ma_eh_clear__a 45
++#define ma_eh_clear__len 1
++#define ma_eh_clear__mask 0x04
++#define ma_eh_clear__shift 0x02
++#define ma_eh_clear__reset 0x00
++//----------------------------------------------------------thermal_compr_en---
++// enable otw-contr.  input compression?
++#define ma_thermal_compr_en__a 45
++#define ma_thermal_compr_en__len 1
++#define ma_thermal_compr_en__mask 0x20
++#define ma_thermal_compr_en__shift 0x05
++#define ma_thermal_compr_en__reset 0x01
++//---------------------------------------------------------------system_mute---
++// 1 = mute system,  0 = normal operation
++#define ma_system_mute__a 45
++#define ma_system_mute__len 1
++#define ma_system_mute__mask 0x40
++#define ma_system_mute__shift 0x06
++#define ma_system_mute__reset 0x00
++//------------------------------------------------------thermal_compr_max_db---
++// audio limiter max thermal reduction
++#define ma_thermal_compr_max_db__a 46
++#define ma_thermal_compr_max_db__len 3
++#define ma_thermal_compr_max_db__mask 0x07
++#define ma_thermal_compr_max_db__shift 0x00
++#define ma_thermal_compr_max_db__reset 0x04
++//---------------------------------------------------------audio_proc_enable---
++// enable audio proc,  bypass if not enabled
++#define ma_audio_proc_enable__a 53
++#define ma_audio_proc_enable__len 1
++#define ma_audio_proc_enable__mask 0x08
++#define ma_audio_proc_enable__shift 0x03
++#define ma_audio_proc_enable__reset 0x00
++//--------------------------------------------------------audio_proc_release---
++// 00:slow,  01:normal,  10:fast
++#define ma_audio_proc_release__a 53
++#define ma_audio_proc_release__len 2
++#define ma_audio_proc_release__mask 0x30
++#define ma_audio_proc_release__shift 0x04
++#define ma_audio_proc_release__reset 0x00
++//---------------------------------------------------------audio_proc_attack---
++// 00:slow,  01:normal,  10:fast
++#define ma_audio_proc_attack__a 53
++#define ma_audio_proc_attack__len 2
++#define ma_audio_proc_attack__mask 0xc0
++#define ma_audio_proc_attack__shift 0x06
++#define ma_audio_proc_attack__reset 0x00
++//----------------------------------------------------------------i2s_format---
++// i2s basic data format,  000 = std. i2s,  001 = left justified (default)
++#define ma_i2s_format__a 53
++#define ma_i2s_format__len 3
++#define ma_i2s_format__mask 0x07
++#define ma_i2s_format__shift 0x00
++#define ma_i2s_format__reset 0x01
++//--------------------------------------------------audio_proc_limiterenable---
++// 1: enable limiter,  0: disable limiter
++#define ma_audio_proc_limiterenable__a 54
++#define ma_audio_proc_limiterenable__len 1
++#define ma_audio_proc_limiterenable__mask 0x40
++#define ma_audio_proc_limiterenable__shift 0x06
++#define ma_audio_proc_limiterenable__reset 0x00
++//-----------------------------------------------------------audio_proc_mute---
++// 1: mute,  0: unmute
++#define ma_audio_proc_mute__a 54
++#define ma_audio_proc_mute__len 1
++#define ma_audio_proc_mute__mask 0x80
++#define ma_audio_proc_mute__shift 0x07
++#define ma_audio_proc_mute__reset 0x00
++//---------------------------------------------------------------i2s_sck_pol---
++// i2s sck polarity cfg. 0 = rising edge data change
++#define ma_i2s_sck_pol__a 54
++#define ma_i2s_sck_pol__len 1
++#define ma_i2s_sck_pol__mask 0x01
++#define ma_i2s_sck_pol__shift 0x00
++#define ma_i2s_sck_pol__reset 0x01
++//-------------------------------------------------------------i2s_framesize---
++// i2s word length. 00 = 32bit,  01 = 24bit
++#define ma_i2s_framesize__a 54
++#define ma_i2s_framesize__len 2
++#define ma_i2s_framesize__mask 0x18
++#define ma_i2s_framesize__shift 0x03
++#define ma_i2s_framesize__reset 0x00
++//----------------------------------------------------------------i2s_ws_pol---
++// i2s ws polarity. 0 = low first
++#define ma_i2s_ws_pol__a 54
++#define ma_i2s_ws_pol__len 1
++#define ma_i2s_ws_pol__mask 0x02
++#define ma_i2s_ws_pol__shift 0x01
++#define ma_i2s_ws_pol__reset 0x00
++//-----------------------------------------------------------------i2s_order---
++// i2s word bit order. 0 = msb first
++#define ma_i2s_order__a 54
++#define ma_i2s_order__len 1
++#define ma_i2s_order__mask 0x04
++#define ma_i2s_order__shift 0x02
++#define ma_i2s_order__reset 0x00
++//------------------------------------------------------------i2s_rightfirst---
++// i2s l/r word order; 0 = left first
++#define ma_i2s_rightfirst__a 54
++#define ma_i2s_rightfirst__len 1
++#define ma_i2s_rightfirst__mask 0x20
++#define ma_i2s_rightfirst__shift 0x05
++#define ma_i2s_rightfirst__reset 0x00
++//-------------------------------------------------------------vol_db_master---
++// master volume db
++#define ma_vol_db_master__a 64
++#define ma_vol_db_master__len 8
++#define ma_vol_db_master__mask 0xff
++#define ma_vol_db_master__shift 0x00
++#define ma_vol_db_master__reset 0x18
++//------------------------------------------------------------vol_lsb_master---
++// master volume lsb 1/4 steps
++#define ma_vol_lsb_master__a 65
++#define ma_vol_lsb_master__len 2
++#define ma_vol_lsb_master__mask 0x03
++#define ma_vol_lsb_master__shift 0x00
++#define ma_vol_lsb_master__reset 0x00
++//----------------------------------------------------------------vol_db_ch0---
++// volume channel 0
++#define ma_vol_db_ch0__a 66
++#define ma_vol_db_ch0__len 8
++#define ma_vol_db_ch0__mask 0xff
++#define ma_vol_db_ch0__shift 0x00
++#define ma_vol_db_ch0__reset 0x18
++//----------------------------------------------------------------vol_db_ch1---
++// volume channel 1
++#define ma_vol_db_ch1__a 67
++#define ma_vol_db_ch1__len 8
++#define ma_vol_db_ch1__mask 0xff
++#define ma_vol_db_ch1__shift 0x00
++#define ma_vol_db_ch1__reset 0x18
++//----------------------------------------------------------------vol_db_ch2---
++// volume channel 2
++#define ma_vol_db_ch2__a 68
++#define ma_vol_db_ch2__len 8
++#define ma_vol_db_ch2__mask 0xff
++#define ma_vol_db_ch2__shift 0x00
++#define ma_vol_db_ch2__reset 0x18
++//----------------------------------------------------------------vol_db_ch3---
++// volume channel 3
++#define ma_vol_db_ch3__a 69
++#define ma_vol_db_ch3__len 8
++#define ma_vol_db_ch3__mask 0xff
++#define ma_vol_db_ch3__shift 0x00
++#define ma_vol_db_ch3__reset 0x18
++//---------------------------------------------------------------vol_lsb_ch0---
++// volume channel 1 - 1/4 steps
++#define ma_vol_lsb_ch0__a 70
++#define ma_vol_lsb_ch0__len 2
++#define ma_vol_lsb_ch0__mask 0x03
++#define ma_vol_lsb_ch0__shift 0x00
++#define ma_vol_lsb_ch0__reset 0x00
++//---------------------------------------------------------------vol_lsb_ch1---
++// volume channel 3 - 1/4 steps
++#define ma_vol_lsb_ch1__a 70
++#define ma_vol_lsb_ch1__len 2
++#define ma_vol_lsb_ch1__mask 0x0c
++#define ma_vol_lsb_ch1__shift 0x02
++#define ma_vol_lsb_ch1__reset 0x00
++//---------------------------------------------------------------vol_lsb_ch2---
++// volume channel 2 - 1/4 steps
++#define ma_vol_lsb_ch2__a 70
++#define ma_vol_lsb_ch2__len 2
++#define ma_vol_lsb_ch2__mask 0x30
++#define ma_vol_lsb_ch2__shift 0x04
++#define ma_vol_lsb_ch2__reset 0x00
++//---------------------------------------------------------------vol_lsb_ch3---
++// volume channel 3 - 1/4 steps
++#define ma_vol_lsb_ch3__a 70
++#define ma_vol_lsb_ch3__len 2
++#define ma_vol_lsb_ch3__mask 0xc0
++#define ma_vol_lsb_ch3__shift 0x06
++#define ma_vol_lsb_ch3__reset 0x00
++//----------------------------------------------------------------thr_db_ch0---
++// thr_db channel 0
++#define ma_thr_db_ch0__a 71
++#define ma_thr_db_ch0__len 8
++#define ma_thr_db_ch0__mask 0xff
++#define ma_thr_db_ch0__shift 0x00
++#define ma_thr_db_ch0__reset 0x18
++//----------------------------------------------------------------thr_db_ch1---
++// thr db ch1
++#define ma_thr_db_ch1__a 72
++#define ma_thr_db_ch1__len 8
++#define ma_thr_db_ch1__mask 0xff
++#define ma_thr_db_ch1__shift 0x00
++#define ma_thr_db_ch1__reset 0x18
++//----------------------------------------------------------------thr_db_ch2---
++// thr db ch2
++#define ma_thr_db_ch2__a 73
++#define ma_thr_db_ch2__len 8
++#define ma_thr_db_ch2__mask 0xff
++#define ma_thr_db_ch2__shift 0x00
++#define ma_thr_db_ch2__reset 0x18
++//----------------------------------------------------------------thr_db_ch3---
++// threshold db ch3
++#define ma_thr_db_ch3__a 74
++#define ma_thr_db_ch3__len 8
++#define ma_thr_db_ch3__mask 0xff
++#define ma_thr_db_ch3__shift 0x00
++#define ma_thr_db_ch3__reset 0x18
++//---------------------------------------------------------------thr_lsb_ch0---
++// thr lsb ch0
++#define ma_thr_lsb_ch0__a 75
++#define ma_thr_lsb_ch0__len 2
++#define ma_thr_lsb_ch0__mask 0x03
++#define ma_thr_lsb_ch0__shift 0x00
++#define ma_thr_lsb_ch0__reset 0x00
++//---------------------------------------------------------------thr_lsb_ch1---
++// thr lsb ch1
++#define ma_thr_lsb_ch1__a 75
++#define ma_thr_lsb_ch1__len 2
++#define ma_thr_lsb_ch1__mask 0x0c
++#define ma_thr_lsb_ch1__shift 0x02
++#define ma_thr_lsb_ch1__reset 0x00
++//---------------------------------------------------------------thr_lsb_ch2---
++// thr lsb ch2 1/4 db step
++#define ma_thr_lsb_ch2__a 75
++#define ma_thr_lsb_ch2__len 2
++#define ma_thr_lsb_ch2__mask 0x30
++#define ma_thr_lsb_ch2__shift 0x04
++#define ma_thr_lsb_ch2__reset 0x00
++//---------------------------------------------------------------thr_lsb_ch3---
++// threshold lsb ch3
++#define ma_thr_lsb_ch3__a 75
++#define ma_thr_lsb_ch3__len 2
++#define ma_thr_lsb_ch3__mask 0xc0
++#define ma_thr_lsb_ch3__shift 0x06
++#define ma_thr_lsb_ch3__reset 0x00
++//-----------------------------------------------------------dcu_mon0.pm_mon---
++// power mode monitor channel 0
++#define ma_dcu_mon0__pm_mon__a 96
++#define ma_dcu_mon0__pm_mon__len 2
++#define ma_dcu_mon0__pm_mon__mask 0x03
++#define ma_dcu_mon0__pm_mon__shift 0x00
++#define ma_dcu_mon0__pm_mon__reset 0x00
++//-----------------------------------------------------dcu_mon0.freqmode_mon---
++// frequence mode monitor channel 0
++#define ma_dcu_mon0__freqmode_mon__a 96
++#define ma_dcu_mon0__freqmode_mon__len 3
++#define ma_dcu_mon0__freqmode_mon__mask 0x70
++#define ma_dcu_mon0__freqmode_mon__shift 0x04
++#define ma_dcu_mon0__freqmode_mon__reset 0x00
++//-------------------------------------------------------dcu_mon0.pps_passed---
++// dcu0 pps completion indicator
++#define ma_dcu_mon0__pps_passed__a 96
++#define ma_dcu_mon0__pps_passed__len 1
++#define ma_dcu_mon0__pps_passed__mask 0x80
++#define ma_dcu_mon0__pps_passed__shift 0x07
++#define ma_dcu_mon0__pps_passed__reset 0x00
++//----------------------------------------------------------dcu_mon0.ocp_mon---
++// ocp monitor channel 0
++#define ma_dcu_mon0__ocp_mon__a 97
++#define ma_dcu_mon0__ocp_mon__len 1
++#define ma_dcu_mon0__ocp_mon__mask 0x01
++#define ma_dcu_mon0__ocp_mon__shift 0x00
++#define ma_dcu_mon0__ocp_mon__reset 0x00
++//--------------------------------------------------------dcu_mon0.vcfly1_ok---
++// cfly1 protection monitor channel 0.
++#define ma_dcu_mon0__vcfly1_ok__a 97
++#define ma_dcu_mon0__vcfly1_ok__len 1
++#define ma_dcu_mon0__vcfly1_ok__mask 0x02
++#define ma_dcu_mon0__vcfly1_ok__shift 0x01
++#define ma_dcu_mon0__vcfly1_ok__reset 0x00
++//--------------------------------------------------------dcu_mon0.vcfly2_ok---
++// cfly2 protection monitor channel 0.
++#define ma_dcu_mon0__vcfly2_ok__a 97
++#define ma_dcu_mon0__vcfly2_ok__len 1
++#define ma_dcu_mon0__vcfly2_ok__mask 0x04
++#define ma_dcu_mon0__vcfly2_ok__shift 0x02
++#define ma_dcu_mon0__vcfly2_ok__reset 0x00
++//----------------------------------------------------------dcu_mon0.pvdd_ok---
++// dcu0 pvdd monitor
++#define ma_dcu_mon0__pvdd_ok__a 97
++#define ma_dcu_mon0__pvdd_ok__len 1
++#define ma_dcu_mon0__pvdd_ok__mask 0x08
++#define ma_dcu_mon0__pvdd_ok__shift 0x03
++#define ma_dcu_mon0__pvdd_ok__reset 0x00
++//-----------------------------------------------------------dcu_mon0.vdd_ok---
++// dcu0 vdd monitor
++#define ma_dcu_mon0__vdd_ok__a 97
++#define ma_dcu_mon0__vdd_ok__len 1
++#define ma_dcu_mon0__vdd_ok__mask 0x10
++#define ma_dcu_mon0__vdd_ok__shift 0x04
++#define ma_dcu_mon0__vdd_ok__reset 0x00
++//-------------------------------------------------------------dcu_mon0.mute---
++// dcu0 mute monitor
++#define ma_dcu_mon0__mute__a 97
++#define ma_dcu_mon0__mute__len 1
++#define ma_dcu_mon0__mute__mask 0x20
++#define ma_dcu_mon0__mute__shift 0x05
++#define ma_dcu_mon0__mute__reset 0x00
++//------------------------------------------------------------dcu_mon0.m_mon---
++// m sense monitor channel 0
++#define ma_dcu_mon0__m_mon__a 98
++#define ma_dcu_mon0__m_mon__len 8
++#define ma_dcu_mon0__m_mon__mask 0xff
++#define ma_dcu_mon0__m_mon__shift 0x00
++#define ma_dcu_mon0__m_mon__reset 0x00
++//-----------------------------------------------------------dcu_mon1.pm_mon---
++// power mode monitor channel 1
++#define ma_dcu_mon1__pm_mon__a 100
++#define ma_dcu_mon1__pm_mon__len 2
++#define ma_dcu_mon1__pm_mon__mask 0x03
++#define ma_dcu_mon1__pm_mon__shift 0x00
++#define ma_dcu_mon1__pm_mon__reset 0x00
++//-----------------------------------------------------dcu_mon1.freqmode_mon---
++// frequence mode monitor channel 1
++#define ma_dcu_mon1__freqmode_mon__a 100
++#define ma_dcu_mon1__freqmode_mon__len 3
++#define ma_dcu_mon1__freqmode_mon__mask 0x70
++#define ma_dcu_mon1__freqmode_mon__shift 0x04
++#define ma_dcu_mon1__freqmode_mon__reset 0x00
++//-------------------------------------------------------dcu_mon1.pps_passed---
++// dcu1 pps completion indicator
++#define ma_dcu_mon1__pps_passed__a 100
++#define ma_dcu_mon1__pps_passed__len 1
++#define ma_dcu_mon1__pps_passed__mask 0x80
++#define ma_dcu_mon1__pps_passed__shift 0x07
++#define ma_dcu_mon1__pps_passed__reset 0x00
++//----------------------------------------------------------dcu_mon1.ocp_mon---
++// ocp monitor channel 1
++#define ma_dcu_mon1__ocp_mon__a 101
++#define ma_dcu_mon1__ocp_mon__len 1
++#define ma_dcu_mon1__ocp_mon__mask 0x01
++#define ma_dcu_mon1__ocp_mon__shift 0x00
++#define ma_dcu_mon1__ocp_mon__reset 0x00
++//--------------------------------------------------------dcu_mon1.vcfly1_ok---
++// cfly1 protcetion monitor channel 1
++#define ma_dcu_mon1__vcfly1_ok__a 101
++#define ma_dcu_mon1__vcfly1_ok__len 1
++#define ma_dcu_mon1__vcfly1_ok__mask 0x02
++#define ma_dcu_mon1__vcfly1_ok__shift 0x01
++#define ma_dcu_mon1__vcfly1_ok__reset 0x00
++//--------------------------------------------------------dcu_mon1.vcfly2_ok---
++// cfly2 protection monitor channel 1
++#define ma_dcu_mon1__vcfly2_ok__a 101
++#define ma_dcu_mon1__vcfly2_ok__len 1
++#define ma_dcu_mon1__vcfly2_ok__mask 0x04
++#define ma_dcu_mon1__vcfly2_ok__shift 0x02
++#define ma_dcu_mon1__vcfly2_ok__reset 0x00
++//----------------------------------------------------------dcu_mon1.pvdd_ok---
++// dcu1 pvdd monitor
++#define ma_dcu_mon1__pvdd_ok__a 101
++#define ma_dcu_mon1__pvdd_ok__len 1
++#define ma_dcu_mon1__pvdd_ok__mask 0x08
++#define ma_dcu_mon1__pvdd_ok__shift 0x03
++#define ma_dcu_mon1__pvdd_ok__reset 0x00
++//-----------------------------------------------------------dcu_mon1.vdd_ok---
++// dcu1 vdd monitor
++#define ma_dcu_mon1__vdd_ok__a 101
++#define ma_dcu_mon1__vdd_ok__len 1
++#define ma_dcu_mon1__vdd_ok__mask 0x10
++#define ma_dcu_mon1__vdd_ok__shift 0x04
++#define ma_dcu_mon1__vdd_ok__reset 0x00
++//-------------------------------------------------------------dcu_mon1.mute---
++// dcu1 mute monitor
++#define ma_dcu_mon1__mute__a 101
++#define ma_dcu_mon1__mute__len 1
++#define ma_dcu_mon1__mute__mask 0x20
++#define ma_dcu_mon1__mute__shift 0x05
++#define ma_dcu_mon1__mute__reset 0x00
++//------------------------------------------------------------dcu_mon1.m_mon---
++// m sense monitor channel 1
++#define ma_dcu_mon1__m_mon__a 102
++#define ma_dcu_mon1__m_mon__len 8
++#define ma_dcu_mon1__m_mon__mask 0xff
++#define ma_dcu_mon1__m_mon__shift 0x00
++#define ma_dcu_mon1__m_mon__reset 0x00
++//--------------------------------------------------------dcu_mon0.sw_enable---
++// dcu0 switch enable monitor
++#define ma_dcu_mon0__sw_enable__a 104
++#define ma_dcu_mon0__sw_enable__len 1
++#define ma_dcu_mon0__sw_enable__mask 0x40
++#define ma_dcu_mon0__sw_enable__shift 0x06
++#define ma_dcu_mon0__sw_enable__reset 0x00
++//--------------------------------------------------------dcu_mon1.sw_enable---
++// dcu1 switch enable monitor
++#define ma_dcu_mon1__sw_enable__a 104
++#define ma_dcu_mon1__sw_enable__len 1
++#define ma_dcu_mon1__sw_enable__mask 0x80
++#define ma_dcu_mon1__sw_enable__shift 0x07
++#define ma_dcu_mon1__sw_enable__reset 0x00
++//------------------------------------------------------------hvboot0_ok_mon---
++// hvboot0_ok for test/debug
++#define ma_hvboot0_ok_mon__a 105
++#define ma_hvboot0_ok_mon__len 1
++#define ma_hvboot0_ok_mon__mask 0x40
++#define ma_hvboot0_ok_mon__shift 0x06
++#define ma_hvboot0_ok_mon__reset 0x00
++//------------------------------------------------------------hvboot1_ok_mon---
++// hvboot1_ok for test/debug
++#define ma_hvboot1_ok_mon__a 105
++#define ma_hvboot1_ok_mon__len 1
++#define ma_hvboot1_ok_mon__mask 0x80
++#define ma_hvboot1_ok_mon__shift 0x07
++#define ma_hvboot1_ok_mon__reset 0x00
++//-----------------------------------------------------------------error_acc---
++// accumulated errors,  at and after triggering
++#define ma_error_acc__a 109
++#define ma_error_acc__len 8
++#define ma_error_acc__mask 0xff
++#define ma_error_acc__shift 0x00
++#define ma_error_acc__reset 0x00
++//-------------------------------------------------------------i2s_data_rate---
++// detected i2s data rate: 00/01/10 = x1/x2/x4
++#define ma_i2s_data_rate__a 116
++#define ma_i2s_data_rate__len 2
++#define ma_i2s_data_rate__mask 0x03
++#define ma_i2s_data_rate__shift 0x00
++#define ma_i2s_data_rate__reset 0x00
++//---------------------------------------------------------audio_in_mode_mon---
++// audio input mode monitor
++#define ma_audio_in_mode_mon__a 116
++#define ma_audio_in_mode_mon__len 3
++#define ma_audio_in_mode_mon__mask 0x1c
++#define ma_audio_in_mode_mon__shift 0x02
++#define ma_audio_in_mode_mon__reset 0x00
++//------------------------------------------------------------------msel_mon---
++// msel[2:0] monitor register
++#define ma_msel_mon__a 117
++#define ma_msel_mon__len 3
++#define ma_msel_mon__mask 0x07
++#define ma_msel_mon__shift 0x00
++#define ma_msel_mon__reset 0x00
++//---------------------------------------------------------------------error---
++// current error flag monitor reg - for app. ctrl.
++#define ma_error__a 124
++#define ma_error__len 8
++#define ma_error__mask 0xff
++#define ma_error__shift 0x00
++#define ma_error__reset 0x00
++//----------------------------------------------------audio_proc_limiter_mon---
++// b7-b4: channel 3-0 limiter active
++#define ma_audio_proc_limiter_mon__a 126
++#define ma_audio_proc_limiter_mon__len 4
++#define ma_audio_proc_limiter_mon__mask 0xf0
++#define ma_audio_proc_limiter_mon__shift 0x04
++#define ma_audio_proc_limiter_mon__reset 0x00
++//-------------------------------------------------------audio_proc_clip_mon---
++// b3-b0: channel 3-0 clipping monitor
++#define ma_audio_proc_clip_mon__a 126
++#define ma_audio_proc_clip_mon__len 4
++#define ma_audio_proc_clip_mon__mask 0x0f
++#define ma_audio_proc_clip_mon__shift 0x00
++#define ma_audio_proc_clip_mon__reset 0x00
++#endif
++
++#define SOC_ENUM_ERR(xname, xenum)\
++{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
++	.access = SNDRV_CTL_ELEM_ACCESS_READ,\
++	.info = snd_soc_info_enum_double,\
++	.get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double,\
++	.private_value = (unsigned long)&(xenum) }
++
++static struct i2c_client *i2c;
++
++struct ma120x0p_priv {
++	struct regmap *regmap;
++	int mclk_div;
++	struct snd_soc_component *component;
++	struct gpio_desc *enable_gpio;
++	struct gpio_desc *mute_gpio;
++	struct gpio_desc *booster_gpio;
++	struct gpio_desc *error_gpio;
++};
++
++static struct ma120x0p_priv *priv_data;
++
++//Used to share the IRQ number within this file
++static unsigned int irqNumber;
++
++// Function prototype for the custom IRQ handler function
++static irqreturn_t ma120x0p_irq_handler(int irq, void *data);
++
++//Alsa Controls
++static const char * const limenable_text[] = {"Bypassed", "Enabled"};
++static const char * const limatack_text[] = {"Slow", "Normal", "Fast"};
++static const char * const limrelease_text[] = {"Slow", "Normal", "Fast"};
++
++static const char * const err_flycap_text[] = {"Ok", "Error"};
++static const char * const err_overcurr_text[] = {"Ok", "Error"};
++static const char * const err_pllerr_text[] = {"Ok", "Error"};
++static const char * const err_pvddunder_text[] = {"Ok", "Error"};
++static const char * const err_overtempw_text[] = {"Ok", "Error"};
++static const char * const err_overtempe_text[] = {"Ok", "Error"};
++static const char * const err_pinlowimp_text[] = {"Ok", "Error"};
++static const char * const err_dcprot_text[] = {"Ok", "Error"};
++
++static const char * const pwr_mode_prof_text[] = {"PMF0", "PMF1", "PMF2",
++"PMF3", "PMF4"};
++
++static const struct soc_enum lim_enable_ctrl =
++	SOC_ENUM_SINGLE(ma_audio_proc_limiterenable__a,
++		ma_audio_proc_limiterenable__shift,
++		ma_audio_proc_limiterenable__len + 1,
++		limenable_text);
++static const struct soc_enum limatack_ctrl =
++	SOC_ENUM_SINGLE(ma_audio_proc_attack__a,
++		ma_audio_proc_attack__shift,
++		ma_audio_proc_attack__len + 1,
++		limatack_text);
++static const struct soc_enum limrelease_ctrl =
++	SOC_ENUM_SINGLE(ma_audio_proc_release__a,
++		ma_audio_proc_release__shift,
++		ma_audio_proc_release__len + 1,
++		limrelease_text);
++static const struct soc_enum err_flycap_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 0, 3, err_flycap_text);
++static const struct soc_enum err_overcurr_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 1, 3, err_overcurr_text);
++static const struct soc_enum err_pllerr_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 2, 3, err_pllerr_text);
++static const struct soc_enum err_pvddunder_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 3, 3, err_pvddunder_text);
++static const struct soc_enum err_overtempw_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 4, 3, err_overtempw_text);
++static const struct soc_enum err_overtempe_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 5, 3, err_overtempe_text);
++static const struct soc_enum err_pinlowimp_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 6, 3, err_pinlowimp_text);
++static const struct soc_enum err_dcprot_ctrl =
++	SOC_ENUM_SINGLE(ma_error__a, 7, 3, err_dcprot_text);
++static const struct soc_enum pwr_mode_prof_ctrl =
++	SOC_ENUM_SINGLE(ma_pmprofile__a, ma_pmprofile__shift, 5,
++		pwr_mode_prof_text);
++
++static const char * const pwr_mode_texts[] = {
++		"Dynamic power mode",
++		"Power mode 1",
++		"Power mode 2",
++		"Power mode 3",
++	};
++
++static const int pwr_mode_values[] = {
++		0x10,
++		0x50,
++		0x60,
++		0x70,
++	};
++
++static const SOC_VALUE_ENUM_SINGLE_DECL(pwr_mode_ctrl,
++	ma_pm_man__a, 0, 0x70,
++	pwr_mode_texts,
++	pwr_mode_values);
++
++static const DECLARE_TLV_DB_SCALE(ma120x0p_vol_tlv, -5000, 100,  0);
++static const DECLARE_TLV_DB_SCALE(ma120x0p_lim_tlv, -5000, 100,  0);
++static const DECLARE_TLV_DB_SCALE(ma120x0p_lr_tlv, -5000, 100,  0);
++
++static const struct snd_kcontrol_new ma120x0p_snd_controls[] = {
++	//Master Volume
++	SOC_SINGLE_RANGE_TLV("A.Mstr Vol Volume",
++		ma_vol_db_master__a, 0, 0x18, 0x4a, 1, ma120x0p_vol_tlv),
++
++	//L-R Volume ch0
++	SOC_SINGLE_RANGE_TLV("B.L Vol Volume",
++		ma_vol_db_ch0__a, 0, 0x18, 0x4a, 1, ma120x0p_lr_tlv),
++	SOC_SINGLE_RANGE_TLV("C.R Vol Volume",
++		ma_vol_db_ch1__a, 0, 0x18, 0x4a, 1, ma120x0p_lr_tlv),
++
++	//L-R Limiter Threshold ch0-ch1
++	SOC_DOUBLE_R_RANGE_TLV("D.Lim thresh Volume",
++		ma_thr_db_ch0__a, ma_thr_db_ch1__a, 0, 0x0e, 0x4a, 1,
++		ma120x0p_lim_tlv),
++
++	//Enum Switches/Selectors
++	//SOC_ENUM("E.AudioProc Mute", audioproc_mute_ctrl),
++	SOC_ENUM("F.Limiter Enable", lim_enable_ctrl),
++	SOC_ENUM("G.Limiter Attck", limatack_ctrl),
++	SOC_ENUM("H.Limiter Rls", limrelease_ctrl),
++
++	//Enum Error Monitor (read-only)
++	SOC_ENUM_ERR("I.Err flycap", err_flycap_ctrl),
++	SOC_ENUM_ERR("J.Err overcurr", err_overcurr_ctrl),
++	SOC_ENUM_ERR("K.Err pllerr", err_pllerr_ctrl),
++	SOC_ENUM_ERR("L.Err pvddunder", err_pvddunder_ctrl),
++	SOC_ENUM_ERR("M.Err overtempw", err_overtempw_ctrl),
++	SOC_ENUM_ERR("N.Err overtempe", err_overtempe_ctrl),
++	SOC_ENUM_ERR("O.Err pinlowimp", err_pinlowimp_ctrl),
++	SOC_ENUM_ERR("P.Err dcprot", err_dcprot_ctrl),
++
++	//Power modes profiles
++	SOC_ENUM("Q.PM Prof", pwr_mode_prof_ctrl),
++
++	// Power mode selection (Dynamic,1,2,3)
++	SOC_ENUM("R.Power Mode", pwr_mode_ctrl),
++};
++
++//Machine Driver
++static int ma120x0p_hw_params(struct snd_pcm_substream *substream,
++	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
++{
++	u16 blen = 0x00;
++
++	struct snd_soc_component *component = dai->component;
++
++	priv_data->component = component;
++
++	switch (params_format(params)) {
++	case SNDRV_PCM_FORMAT_S16_LE:
++		blen = 0x10;
++		break;
++	case SNDRV_PCM_FORMAT_S24_LE:
++		blen = 0x00;
++		break;
++	case SNDRV_PCM_FORMAT_S32_LE:
++		blen = 0x00;
++		break;
++	default:
++		dev_err(dai->dev, "Unsupported word length: %u\n",
++		params_format(params));
++		return -EINVAL;
++	}
++
++	// set word length
++	snd_soc_component_update_bits(component, ma_i2s_framesize__a,
++		ma_i2s_framesize__mask, blen);
++
++	return 0;
++}
++
++static int ma120x0p_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
++{
++	int val = 0;
++
++	struct ma120x0p_priv *ma120x0p;
++
++	struct snd_soc_component *component = dai->component;
++
++	ma120x0p = snd_soc_component_get_drvdata(component);
++
++	if (mute)
++		val = 0;
++	else
++		val = 1;
++
++	gpiod_set_value_cansleep(priv_data->mute_gpio, val);
++
++	return 0;
++}
++
++static const struct snd_soc_dai_ops ma120x0p_dai_ops = {
++	.hw_params		=	ma120x0p_hw_params,
++	.mute_stream	=	ma120x0p_mute_stream,
++};
++
++static struct snd_soc_dai_driver ma120x0p_dai = {
++	.name		= "ma120x0p-amp",
++	.playback	=	{
++		.stream_name	= "Playback",
++		.channels_min	= 2,
++		.channels_max	= 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.rate_min = 44100,
++		.rate_max = 96000,
++		.formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE
++	},
++	.ops        = &ma120x0p_dai_ops,
++};
++
++//Codec Driver
++static int ma120x0p_clear_err(struct snd_soc_component *component)
++{
++	int ret = 0;
++
++	struct ma120x0p_priv *ma120x0p;
++
++	ma120x0p = snd_soc_component_get_drvdata(component);
++
++	ret = snd_soc_component_update_bits(component,
++		ma_eh_clear__a, ma_eh_clear__mask, 0x00);
++	if (ret < 0)
++		return ret;
++
++	ret = snd_soc_component_update_bits(component,
++		ma_eh_clear__a, ma_eh_clear__mask, 0x04);
++	if (ret < 0)
++		return ret;
++
++	ret = snd_soc_component_update_bits(component,
++		ma_eh_clear__a, ma_eh_clear__mask, 0x00);
++	if (ret < 0)
++		return ret;
++
++	return 0;
++}
++
++static void ma120x0p_remove(struct snd_soc_component *component)
++{
++	struct ma120x0p_priv *ma120x0p;
++
++	ma120x0p = snd_soc_component_get_drvdata(component);
++}
++
++static int ma120x0p_probe(struct snd_soc_component *component)
++{
++	struct ma120x0p_priv *ma120x0p;
++
++	int ret = 0;
++
++	i2c = container_of(component->dev, struct i2c_client, dev);
++
++	ma120x0p = snd_soc_component_get_drvdata(component);
++
++	//Reset error
++	ma120x0p_clear_err(component);
++	if (ret < 0)
++		return ret;
++
++	// set serial audio format I2S and enable audio processor
++	ret = snd_soc_component_write(component, ma_i2s_format__a, 0x08);
++	if (ret < 0)
++		return ret;
++
++	// Enable audio limiter
++	ret = snd_soc_component_update_bits(component,
++		ma_audio_proc_limiterenable__a,
++		ma_audio_proc_limiterenable__mask, 0x40);
++	if (ret < 0)
++		return ret;
++
++	// Set lim attack to fast
++	ret = snd_soc_component_update_bits(component,
++		ma_audio_proc_attack__a, ma_audio_proc_attack__mask, 0x80);
++	if (ret < 0)
++		return ret;
++
++	// Set lim attack to low
++	ret = snd_soc_component_update_bits(component,
++		ma_audio_proc_release__a, ma_audio_proc_release__mask, 0x00);
++	if (ret < 0)
++		return ret;
++
++	// set volume to 0dB
++	ret = snd_soc_component_write(component, ma_vol_db_master__a, 0x18);
++	if (ret < 0)
++		return ret;
++
++	// set ch0 lim thresh to -15dB
++	ret = snd_soc_component_write(component, ma_thr_db_ch0__a, 0x27);
++	if (ret < 0)
++		return ret;
++
++	// set ch1 lim thresh to -15dB
++	ret = snd_soc_component_write(component, ma_thr_db_ch1__a, 0x27);
++	if (ret < 0)
++		return ret;
++
++	//Check for errors
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x00, 0);
++	if (ret < 0)
++		return ret;
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x01, 0);
++	if (ret < 0)
++		return ret;
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x02, 0);
++	if (ret < 0)
++		return ret;
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x08, 0);
++	if (ret < 0)
++		return ret;
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x10, 0);
++	if (ret < 0)
++		return ret;
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x20, 0);
++	if (ret < 0)
++		return ret;
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x40, 0);
++	if (ret < 0)
++		return ret;
++	ret = snd_soc_component_test_bits(component, ma_error_acc__a, 0x80, 0);
++	if (ret < 0)
++		return ret;
++
++	return 0;
++}
++
++static int ma120x0p_set_bias_level(struct snd_soc_component *component,
++	enum snd_soc_bias_level level)
++{
++	int ret = 0;
++
++	struct ma120x0p_priv *ma120x0p;
++
++	ma120x0p = snd_soc_component_get_drvdata(component);
++
++	switch (level) {
++	case SND_SOC_BIAS_ON:
++		break;
++
++	case SND_SOC_BIAS_PREPARE:
++		break;
++
++	case SND_SOC_BIAS_STANDBY:
++		ret = gpiod_get_value_cansleep(priv_data->enable_gpio);
++		if (ret != 0) {
++			dev_err(component->dev, "Device ma120x0p disabled in STANDBY BIAS: %d\n",
++			ret);
++			return ret;
++		}
++		break;
++
++	case SND_SOC_BIAS_OFF:
++		break;
++	}
++
++	return 0;
++}
++
++static const struct snd_soc_dapm_widget ma120x0p_dapm_widgets[] = {
++	SND_SOC_DAPM_OUTPUT("OUT_A"),
++	SND_SOC_DAPM_OUTPUT("OUT_B"),
++};
++
++static const struct snd_soc_dapm_route ma120x0p_dapm_routes[] = {
++	{ "OUT_B",  NULL, "Playback" },
++	{ "OUT_A",  NULL, "Playback" },
++};
++
++static const struct snd_soc_component_driver ma120x0p_component_driver = {
++	.probe = ma120x0p_probe,
++	.remove = ma120x0p_remove,
++	.set_bias_level = ma120x0p_set_bias_level,
++	.dapm_widgets		= ma120x0p_dapm_widgets,
++	.num_dapm_widgets	= ARRAY_SIZE(ma120x0p_dapm_widgets),
++	.dapm_routes		= ma120x0p_dapm_routes,
++	.num_dapm_routes	= ARRAY_SIZE(ma120x0p_dapm_routes),
++	.controls = ma120x0p_snd_controls,
++	.num_controls = ARRAY_SIZE(ma120x0p_snd_controls),
++	.use_pmdown_time	= 1,
++	.endianness		= 1,
++	.non_legacy_dai_naming	= 1,
++};
++
++//I2C Driver
++static const struct reg_default ma120x0p_reg_defaults[] = {
++	{	0x01,	0x3c	},
++};
++
++static bool ma120x0p_reg_volatile(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++	case ma_error__a:
++			return true;
++	default:
++			return false;
++	}
++}
++
++static const struct of_device_id ma120x0p_of_match[] = {
++	{ .compatible = "ma,ma120x0p", },
++	{ }
++};
++
++MODULE_DEVICE_TABLE(of, ma120x0p_of_match);
++
++static struct regmap_config ma120x0p_regmap_config = {
++	.reg_bits = 8,
++	.val_bits = 8,
++
++	.max_register = 255,
++	.volatile_reg = ma120x0p_reg_volatile,
++
++	.cache_type = REGCACHE_RBTREE,
++	.reg_defaults = ma120x0p_reg_defaults,
++	.num_reg_defaults = ARRAY_SIZE(ma120x0p_reg_defaults),
++};
++
++static int ma120x0p_i2c_probe(struct i2c_client *i2c,
++	const struct i2c_device_id *id)
++{
++	int ret;
++
++	priv_data = devm_kzalloc(&i2c->dev, sizeof(*priv_data), GFP_KERNEL);
++	if (!priv_data)
++		return -ENOMEM;
++	i2c_set_clientdata(i2c, priv_data);
++
++	priv_data->regmap = devm_regmap_init_i2c(i2c, &ma120x0p_regmap_config);
++	if (IS_ERR(priv_data->regmap)) {
++		ret = PTR_ERR(priv_data->regmap);
++		return ret;
++	}
++
++	//Startup sequence
++
++	//Make sure the device is muted
++	priv_data->mute_gpio = devm_gpiod_get_optional(&i2c->dev, "mute_gp",
++		GPIOD_OUT_LOW);
++	if (IS_ERR(priv_data->mute_gpio)) {
++		ret = PTR_ERR(priv_data->mute_gpio);
++		dev_err(&i2c->dev, "Failed to get mute gpio line: %d\n", ret);
++		return ret;
++	}
++	msleep(50);
++
++// MA120xx0P devices are usually powered by an integrated boost converter.
++// An option GPIO control line is provided to enable the booster properly and
++// in sync with the enable and mute GPIO lines.
++	priv_data->booster_gpio = devm_gpiod_get_optional(&i2c->dev,
++		"booster_gp", GPIOD_OUT_LOW);
++	if (IS_ERR(priv_data->booster_gpio)) {
++		ret = PTR_ERR(priv_data->booster_gpio);
++		dev_err(&i2c->dev,
++		"Failed to get booster enable gpio line: %d\n", ret);
++		return ret;
++	}
++	msleep(50);
++
++	//Enable booster and wait 200ms until stable PVDD
++	gpiod_set_value_cansleep(priv_data->booster_gpio, 1);
++	msleep(200);
++
++	//Enable ma120x0pp
++	priv_data->enable_gpio = devm_gpiod_get_optional(&i2c->dev,
++		"enable_gp", GPIOD_OUT_LOW);
++	if (IS_ERR(priv_data->enable_gpio)) {
++		ret = PTR_ERR(priv_data->enable_gpio);
++		dev_err(&i2c->dev,
++		"Failed to get ma120x0p enable gpio line: %d\n", ret);
++		return ret;
++	}
++	msleep(50);
++
++	//Optional use of ma120x0pp error line as an interrupt trigger to
++	//platform GPIO.
++	//Get error input gpio ma120x0p
++	priv_data->error_gpio = devm_gpiod_get_optional(&i2c->dev,
++		 "error_gp", GPIOD_IN);
++	if (IS_ERR(priv_data->error_gpio)) {
++		ret = PTR_ERR(priv_data->error_gpio);
++		dev_err(&i2c->dev,
++			"Failed to get ma120x0p error gpio line: %d\n", ret);
++		return ret;
++	}
++
++	if (priv_data->error_gpio != NULL) {
++		irqNumber = gpiod_to_irq(priv_data->error_gpio);
++
++		ret = devm_request_threaded_irq(&i2c->dev,
++			 irqNumber, ma120x0p_irq_handler,
++			 NULL, IRQF_TRIGGER_FALLING,
++			 "ma120x0p", priv_data);
++		if (ret != 0)
++			dev_warn(&i2c->dev, "Failed to request IRQ: %d\n",
++				ret);
++	}
++
++	ret = devm_snd_soc_register_component(&i2c->dev,
++		&ma120x0p_component_driver, &ma120x0p_dai, 1);
++
++	return ret;
++}
++
++static irqreturn_t ma120x0p_irq_handler(int irq, void *data)
++{
++	gpiod_set_value_cansleep(priv_data->mute_gpio, 0);
++	gpiod_set_value_cansleep(priv_data->enable_gpio, 1);
++	return IRQ_HANDLED;
++}
++
++static int ma120x0p_i2c_remove(struct i2c_client *i2c)
++{
++	snd_soc_unregister_component(&i2c->dev);
++	i2c_set_clientdata(i2c, NULL);
++
++	gpiod_set_value_cansleep(priv_data->mute_gpio, 0);
++	msleep(30);
++	gpiod_set_value_cansleep(priv_data->enable_gpio, 1);
++	msleep(200);
++	gpiod_set_value_cansleep(priv_data->booster_gpio, 0);
++	msleep(200);
++
++	kfree(priv_data);
++
++	return 0;
++}
++
++static void ma120x0p_i2c_shutdown(struct i2c_client *i2c)
++{
++	snd_soc_unregister_component(&i2c->dev);
++	i2c_set_clientdata(i2c, NULL);
++
++	gpiod_set_value_cansleep(priv_data->mute_gpio, 0);
++	msleep(30);
++	gpiod_set_value_cansleep(priv_data->enable_gpio, 1);
++	msleep(200);
++	gpiod_set_value_cansleep(priv_data->booster_gpio, 0);
++	msleep(200);
++
++	kfree(priv_data);
++}
++
++static const struct i2c_device_id ma120x0p_i2c_id[] = {
++	{ "ma120x0p", 0 },
++	{ }
++};
++
++MODULE_DEVICE_TABLE(i2c, ma120x0p_i2c_id);
++
++static struct i2c_driver ma120x0p_i2c_driver = {
++	.driver = {
++		.name = "ma120x0p",
++		.owner = THIS_MODULE,
++		.of_match_table = ma120x0p_of_match,
++	},
++	.probe = ma120x0p_i2c_probe,
++	.remove = ma120x0p_i2c_remove,
++	.shutdown = ma120x0p_i2c_shutdown,
++	.id_table = ma120x0p_i2c_id
++};
++
++static int __init ma120x0p_modinit(void)
++{
++	int ret = 0;
++
++	ret = i2c_add_driver(&ma120x0p_i2c_driver);
++	if (ret != 0) {
++		pr_err("Failed to register MA120X0P I2C driver: %d\n", ret);
++		return ret;
++	}
++	return ret;
++}
++module_init(ma120x0p_modinit);
++
++static void __exit ma120x0p_exit(void)
++{
++	i2c_del_driver(&ma120x0p_i2c_driver);
++}
++module_exit(ma120x0p_exit);
++
++MODULE_AUTHOR("Ariel Muszkat ariel.muszkat@gmail.com>");
++MODULE_DESCRIPTION("ASoC driver for ma120x0p");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/codecs/pcm1794a.c
+@@ -0,0 +1,69 @@
++/*
++ * Driver for the PCM1794A codec
++ *
++ * Author:	Florian Meier <florian.meier@koalo.de>
++ *		Copyright 2013
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/soc.h>
++
++static struct snd_soc_dai_driver pcm1794a_dai = {
++	.name = "pcm1794a-hifi",
++	.playback = {
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_8000_192000,
++		.formats = SNDRV_PCM_FMTBIT_S16_LE |
++			   SNDRV_PCM_FMTBIT_S24_LE
++	},
++};
++
++static struct snd_soc_component_driver soc_component_dev_pcm1794a;
++
++static int pcm1794a_probe(struct platform_device *pdev)
++{
++	return snd_soc_register_component(&pdev->dev, &soc_component_dev_pcm1794a,
++			&pcm1794a_dai, 1);
++}
++
++static int pcm1794a_remove(struct platform_device *pdev)
++{
++	snd_soc_unregister_component(&pdev->dev);
++	return 0;
++}
++
++static const struct of_device_id pcm1794a_of_match[] = {
++	{ .compatible = "ti,pcm1794a", },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, pcm1794a_of_match);
++
++static struct platform_driver pcm1794a_component_driver = {
++	.probe 		= pcm1794a_probe,
++	.remove 	= pcm1794a_remove,
++	.driver		= {
++		.name	= "pcm1794a-codec",
++		.owner	= THIS_MODULE,
++		.of_match_table = of_match_ptr(pcm1794a_of_match),
++	},
++};
++
++module_platform_driver(pcm1794a_component_driver);
++
++MODULE_DESCRIPTION("ASoC PCM1794A codec driver");
++MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
++MODULE_LICENSE("GPL v2");
+--- a/sound/soc/codecs/pcm512x.c
++++ b/sound/soc/codecs/pcm512x.c
+@@ -536,7 +536,7 @@ static unsigned long pcm512x_ncp_target(
+ 
+ static const u32 pcm512x_dai_rates[] = {
+ 	8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000,
+-	88200, 96000, 176400, 192000, 384000,
++	88200, 96000, 176400, 192000, 352800, 384000,
+ };
+ 
+ static const struct snd_pcm_hw_constraint_list constraints_slave = {
+--- /dev/null
++++ b/sound/soc/codecs/tas5713.c
+@@ -0,0 +1,363 @@
++/*
++ * ASoC Driver for TAS5713
++ *
++ * Author:	Sebastian Eickhoff <basti.eickhoff@googlemail.com>
++ *		Copyright 2014
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/pm.h>
++#include <linux/i2c.h>
++#include <linux/of_device.h>
++#include <linux/spi/spi.h>
++#include <linux/regmap.h>
++#include <linux/regulator/consumer.h>
++#include <linux/slab.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/initval.h>
++#include <sound/tlv.h>
++
++#include <linux/kernel.h>
++#include <linux/string.h>
++#include <linux/fs.h>
++#include <asm/uaccess.h>
++
++#include "tas5713.h"
++
++
++static struct i2c_client *i2c;
++
++struct tas5713_priv {
++	struct regmap *regmap;
++	int mclk_div;
++	struct snd_soc_component *component;
++};
++
++static struct tas5713_priv *priv_data;
++
++
++
++
++/*
++ *    _   _    ___   _      ___         _           _
++ *   /_\ | |  / __| /_\    / __|___ _ _| |_ _ _ ___| |___
++ *  / _ \| |__\__ \/ _ \  | (__/ _ \ ' \  _| '_/ _ \ (_-<
++ * /_/ \_\____|___/_/ \_\  \___\___/_||_\__|_| \___/_/__/
++ *
++ */
++
++static const DECLARE_TLV_DB_SCALE(tas5713_vol_tlv, -10000, 50, 1);
++
++
++static const struct snd_kcontrol_new tas5713_snd_controls[] = {
++	SOC_SINGLE_TLV  ("Master"    , TAS5713_VOL_MASTER, 0, 248, 1, tas5713_vol_tlv),
++	SOC_DOUBLE_R_TLV("Channels"  , TAS5713_VOL_CH1, TAS5713_VOL_CH2, 0, 248, 1, tas5713_vol_tlv)
++};
++
++
++
++
++/*
++ *  __  __         _    _            ___      _
++ * |  \/  |__ _ __| |_ (_)_ _  ___  |   \ _ _(_)_ _____ _ _
++ * | |\/| / _` / _| ' \| | ' \/ -_) | |) | '_| \ V / -_) '_|
++ * |_|  |_\__,_\__|_||_|_|_||_\___| |___/|_| |_|\_/\___|_|
++ *
++ */
++
++static int tas5713_hw_params(struct snd_pcm_substream *substream,
++			    struct snd_pcm_hw_params *params,
++			    struct snd_soc_dai *dai)
++{
++	u16 blen = 0x00;
++
++	struct snd_soc_component *component = dai->component;
++	priv_data->component = component;
++
++	switch (params_format(params)) {
++	case SNDRV_PCM_FORMAT_S16_LE:
++		blen = 0x03;
++		break;
++	case SNDRV_PCM_FORMAT_S20_3LE:
++		blen = 0x1;
++		break;
++	case SNDRV_PCM_FORMAT_S24_LE:
++		blen = 0x04;
++		break;
++	case SNDRV_PCM_FORMAT_S32_LE:
++		blen = 0x05;
++		break;
++	default:
++		dev_err(dai->dev, "Unsupported word length: %u\n",
++			params_format(params));
++		return -EINVAL;
++	}
++
++	// set word length
++	snd_soc_component_update_bits(component, TAS5713_SERIAL_DATA_INTERFACE, 0x7, blen);
++
++	return 0;
++}
++
++
++static int tas5713_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
++{
++	unsigned int val = 0;
++
++	struct tas5713_priv *tas5713;
++	struct snd_soc_component *component = dai->component;
++	tas5713 = snd_soc_component_get_drvdata(component);
++
++	if (mute) {
++		val = TAS5713_SOFT_MUTE_ALL;
++	}
++
++	return regmap_write(tas5713->regmap, TAS5713_SOFT_MUTE, val);
++}
++
++
++static const struct snd_soc_dai_ops tas5713_dai_ops = {
++	.hw_params 		= tas5713_hw_params,
++	.mute_stream	= tas5713_mute_stream,
++};
++
++
++static struct snd_soc_dai_driver tas5713_dai = {
++	.name		= "tas5713-hifi",
++	.playback 	= {
++		.stream_name	= "Playback",
++		.channels_min	= 2,
++		.channels_max	= 2,
++		.rates		    = SNDRV_PCM_RATE_8000_48000,
++		.formats	    = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE ),
++	},
++	.ops        = &tas5713_dai_ops,
++};
++
++
++
++
++/*
++ *   ___         _          ___      _
++ *  / __|___  __| |___ __  |   \ _ _(_)_ _____ _ _
++ * | (__/ _ \/ _` / -_) _| | |) | '_| \ V / -_) '_|
++ *  \___\___/\__,_\___\__| |___/|_| |_|\_/\___|_|
++ *
++ */
++
++static void tas5713_remove(struct snd_soc_component *component)
++{
++	struct tas5713_priv *tas5713;
++
++	tas5713 = snd_soc_component_get_drvdata(component);
++}
++
++
++static int tas5713_probe(struct snd_soc_component *component)
++{
++	struct tas5713_priv *tas5713;
++	int i, ret;
++
++	i2c = container_of(component->dev, struct i2c_client, dev);
++
++	tas5713 = snd_soc_component_get_drvdata(component);
++
++	// Reset error
++	ret = snd_soc_component_write(component, TAS5713_ERROR_STATUS, 0x00);
++	if (ret < 0) return ret;
++
++	// Trim oscillator
++	ret = snd_soc_component_write(component, TAS5713_OSC_TRIM, 0x00);
++	if (ret < 0) return ret;
++	msleep(1000);
++
++	// Reset error
++	ret = snd_soc_component_write(component, TAS5713_ERROR_STATUS, 0x00);
++	if (ret < 0) return ret;
++
++	// I2S 24bit
++	ret = snd_soc_component_write(component, TAS5713_SERIAL_DATA_INTERFACE, 0x05);
++	if (ret < 0) return ret;
++
++	// Unmute
++	ret = snd_soc_component_write(component, TAS5713_SYSTEM_CTRL2, 0x00);
++	if (ret < 0) return ret;
++	ret = snd_soc_component_write(component, TAS5713_SOFT_MUTE, 0x00);
++	if (ret < 0) return ret;
++
++	// Set volume to 0db
++	ret = snd_soc_component_write(component, TAS5713_VOL_MASTER, 0x00);
++	if (ret < 0) return ret;
++
++	// Now start programming the default initialization sequence
++	for (i = 0; i < ARRAY_SIZE(tas5713_init_sequence); ++i) {
++		ret = i2c_master_send(i2c,
++				     tas5713_init_sequence[i].data,
++				     tas5713_init_sequence[i].size);
++		if (ret < 0) {
++			printk(KERN_INFO "TAS5713 CODEC PROBE: InitSeq returns: %d\n", ret);
++		}
++	}
++
++	// Unmute
++	ret = snd_soc_component_write(component, TAS5713_SYSTEM_CTRL2, 0x00);
++	if (ret < 0) return ret;
++
++	return 0;
++}
++
++
++static struct snd_soc_component_driver soc_codec_dev_tas5713 = {
++	.probe = tas5713_probe,
++	.remove = tas5713_remove,
++	.controls = tas5713_snd_controls,
++	.num_controls = ARRAY_SIZE(tas5713_snd_controls),
++};
++
++
++
++
++/*
++ *   ___ ___ ___   ___      _
++ *  |_ _|_  ) __| |   \ _ _(_)_ _____ _ _
++ *   | | / / (__  | |) | '_| \ V / -_) '_|
++ *  |___/___\___| |___/|_| |_|\_/\___|_|
++ *
++ */
++
++static const struct reg_default tas5713_reg_defaults[] = {
++	{ 0x07 ,0x80 },     // R7  - VOL_MASTER    - -40dB
++	{ 0x08 ,  30 },     // R8  - VOL_CH1	   -   0dB
++	{ 0x09 ,  30 },     // R9  - VOL_CH2       -   0dB
++	{ 0x0A ,0x80 },     // R10 - VOL_HEADPHONE - -40dB
++};
++
++
++static bool tas5713_reg_volatile(struct device *dev, unsigned int reg)
++{
++	switch (reg) {
++		case TAS5713_DEVICE_ID:
++		case TAS5713_ERROR_STATUS:
++		case TAS5713_CLOCK_CTRL:
++			return true;
++	default:
++			return false;
++	}
++}
++
++
++static const struct of_device_id tas5713_of_match[] = {
++	{ .compatible = "ti,tas5713", },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, tas5713_of_match);
++
++
++static struct regmap_config tas5713_regmap_config = {
++	.reg_bits = 8,
++	.val_bits = 8,
++
++	.max_register = TAS5713_MAX_REGISTER,
++	.volatile_reg = tas5713_reg_volatile,
++
++	.cache_type = REGCACHE_RBTREE,
++	.reg_defaults = tas5713_reg_defaults,
++	.num_reg_defaults = ARRAY_SIZE(tas5713_reg_defaults),
++};
++
++
++static int tas5713_i2c_probe(struct i2c_client *i2c,
++			    const struct i2c_device_id *id)
++{
++	int ret;
++
++	priv_data = devm_kzalloc(&i2c->dev, sizeof *priv_data, GFP_KERNEL);
++	if (!priv_data)
++		return -ENOMEM;
++
++	priv_data->regmap = devm_regmap_init_i2c(i2c, &tas5713_regmap_config);
++	if (IS_ERR(priv_data->regmap)) {
++		ret = PTR_ERR(priv_data->regmap);
++		return ret;
++	}
++
++	i2c_set_clientdata(i2c, priv_data);
++
++	ret = snd_soc_register_component(&i2c->dev,
++				     &soc_codec_dev_tas5713, &tas5713_dai, 1);
++
++	return ret;
++}
++
++
++static int tas5713_i2c_remove(struct i2c_client *i2c)
++{
++	snd_soc_unregister_component(&i2c->dev);
++	i2c_set_clientdata(i2c, NULL);
++
++	kfree(priv_data);
++
++	return 0;
++}
++
++
++static const struct i2c_device_id tas5713_i2c_id[] = {
++	{ "tas5713", 0 },
++	{ }
++};
++
++MODULE_DEVICE_TABLE(i2c, tas5713_i2c_id);
++
++
++static struct i2c_driver tas5713_i2c_driver = {
++	.driver = {
++		.name = "tas5713",
++		.owner = THIS_MODULE,
++		.of_match_table = tas5713_of_match,
++	},
++	.probe = tas5713_i2c_probe,
++	.remove = tas5713_i2c_remove,
++	.id_table = tas5713_i2c_id
++};
++
++
++static int __init tas5713_modinit(void)
++{
++	int ret = 0;
++
++	ret = i2c_add_driver(&tas5713_i2c_driver);
++	if (ret) {
++		printk(KERN_ERR "Failed to register tas5713 I2C driver: %d\n",
++		       ret);
++	}
++
++	return ret;
++}
++module_init(tas5713_modinit);
++
++
++static void __exit tas5713_exit(void)
++{
++	i2c_del_driver(&tas5713_i2c_driver);
++}
++module_exit(tas5713_exit);
++
++
++MODULE_AUTHOR("Sebastian Eickhoff <basti.eickhoff@googlemail.com>");
++MODULE_DESCRIPTION("ASoC driver for TAS5713");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/sound/soc/codecs/tas5713.h
+@@ -0,0 +1,210 @@
++/*
++ * ASoC Driver for TAS5713
++ *
++ * Author:      Sebastian Eickhoff <basti.eickhoff@googlemail.com>
++ *              Copyright 2014
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#ifndef _TAS5713_H
++#define _TAS5713_H
++
++
++// TAS5713 I2C-bus register addresses
++
++#define TAS5713_CLOCK_CTRL              0x00
++#define TAS5713_DEVICE_ID               0x01
++#define TAS5713_ERROR_STATUS            0x02
++#define TAS5713_SYSTEM_CTRL1            0x03
++#define TAS5713_SERIAL_DATA_INTERFACE   0x04
++#define TAS5713_SYSTEM_CTRL2            0x05
++#define TAS5713_SOFT_MUTE               0x06
++#define TAS5713_VOL_MASTER              0x07
++#define TAS5713_VOL_CH1                 0x08
++#define TAS5713_VOL_CH2                 0x09
++#define TAS5713_VOL_HEADPHONE           0x0A
++#define TAS5713_VOL_CONFIG              0x0E
++#define TAS5713_MODULATION_LIMIT        0x10
++#define TAS5713_IC_DLY_CH1              0x11
++#define TAS5713_IC_DLY_CH2              0x12
++#define TAS5713_IC_DLY_CH3              0x13
++#define TAS5713_IC_DLY_CH4              0x14
++
++#define TAS5713_START_STOP_PERIOD       0x1A
++#define TAS5713_OSC_TRIM                0x1B
++#define TAS5713_BKND_ERR                0x1C
++
++#define TAS5713_INPUT_MUX               0x20
++#define TAS5713_SRC_SELECT_CH4          0x21
++#define TAS5713_PWM_MUX                 0x25
++
++#define TAS5713_CH1_BQ0                 0x29
++#define TAS5713_CH1_BQ1                 0x2A
++#define TAS5713_CH1_BQ2                 0x2B
++#define TAS5713_CH1_BQ3                 0x2C
++#define TAS5713_CH1_BQ4                 0x2D
++#define TAS5713_CH1_BQ5                 0x2E
++#define TAS5713_CH1_BQ6                 0x2F
++#define TAS5713_CH1_BQ7                 0x58
++#define TAS5713_CH1_BQ8                 0x59
++
++#define TAS5713_CH2_BQ0                 0x30
++#define TAS5713_CH2_BQ1                 0x31
++#define TAS5713_CH2_BQ2                 0x32
++#define TAS5713_CH2_BQ3                 0x33
++#define TAS5713_CH2_BQ4                 0x34
++#define TAS5713_CH2_BQ5                 0x35
++#define TAS5713_CH2_BQ6                 0x36
++#define TAS5713_CH2_BQ7                 0x5C
++#define TAS5713_CH2_BQ8                 0x5D
++
++#define TAS5713_CH4_BQ0                 0x5A
++#define TAS5713_CH4_BQ1                 0x5B
++#define TAS5713_CH3_BQ0                 0x5E
++#define TAS5713_CH3_BQ1                 0x5F
++
++#define TAS5713_DRC1_SOFTENING_FILTER_ALPHA_OMEGA       0x3B
++#define TAS5713_DRC1_ATTACK_RELEASE_RATE                0x3C
++#define TAS5713_DRC2_SOFTENING_FILTER_ALPHA_OMEGA       0x3E
++#define TAS5713_DRC2_ATTACK_RELEASE_RATE                0x3F
++#define TAS5713_DRC1_ATTACK_RELEASE_THRES               0x40
++#define TAS5713_DRC2_ATTACK_RELEASE_THRES               0x43
++#define TAS5713_DRC_CTRL                                0x46
++
++#define TAS5713_BANK_SW_CTRL            0x50
++#define TAS5713_CH1_OUTPUT_MIXER        0x51
++#define TAS5713_CH2_OUTPUT_MIXER        0x52
++#define TAS5713_CH1_INPUT_MIXER         0x53
++#define TAS5713_CH2_INPUT_MIXER         0x54
++#define TAS5713_OUTPUT_POST_SCALE       0x56
++#define TAS5713_OUTPUT_PRESCALE         0x57
++
++#define TAS5713_IDF_POST_SCALE          0x62
++
++#define TAS5713_CH1_INLINE_MIXER        0x70
++#define TAS5713_CH1_INLINE_DRC_EN_MIXER 0x71
++#define TAS5713_CH1_R_CHANNEL_MIXER     0x72
++#define TAS5713_CH1_L_CHANNEL_MIXER     0x73
++#define TAS5713_CH2_INLINE_MIXER        0x74
++#define TAS5713_CH2_INLINE_DRC_EN_MIXER 0x75
++#define TAS5713_CH2_L_CHANNEL_MIXER     0x76
++#define TAS5713_CH2_R_CHANNEL_MIXER     0x77
++
++#define TAS5713_UPDATE_DEV_ADDR_KEY     0xF8
++#define TAS5713_UPDATE_DEV_ADDR_REG     0xF9
++
++#define TAS5713_REGISTER_COUNT          0x46
++#define TAS5713_MAX_REGISTER            0xF9
++
++
++// Bitmasks for registers
++#define TAS5713_SOFT_MUTE_ALL           0x07
++
++
++
++struct tas5713_init_command {
++        const int size;
++        const char *const data;
++};
++
++static const struct tas5713_init_command tas5713_init_sequence[] = {
++
++        // Trim oscillator
++    { .size = 2,  .data = "\x1B\x00" },
++    // System control register 1 (0x03): block DC
++    { .size = 2,  .data = "\x03\x80" },
++    // Mute everything
++    { .size = 2,  .data = "\x05\x40" },
++    // Modulation limit register (0x10): 97.7%
++    { .size = 2,  .data = "\x10\x02" },
++    // Interchannel delay registers
++    // (0x11, 0x12, 0x13, and 0x14): BD mode
++    { .size = 2,  .data = "\x11\xB8" },
++    { .size = 2,  .data = "\x12\x60" },
++    { .size = 2,  .data = "\x13\xA0" },
++    { .size = 2,  .data = "\x14\x48" },
++    // PWM shutdown group register (0x19): no shutdown
++    { .size = 2,  .data = "\x19\x00" },
++    // Input multiplexer register (0x20): BD mode
++    { .size = 2,  .data = "\x20\x00\x89\x77\x72" },
++    // PWM output mux register (0x25)
++    // Channel 1 --> OUTA, channel 1 neg --> OUTB
++    // Channel 2 --> OUTC, channel 2 neg --> OUTD
++    { .size = 5,  .data = "\x25\x01\x02\x13\x45" },
++    // DRC control (0x46): DRC off
++    { .size = 5,  .data = "\x46\x00\x00\x00\x00" },
++    // BKND_ERR register (0x1C): 299ms reset period
++    { .size = 2,  .data = "\x1C\x07" },
++    // Mute channel 3
++    { .size = 2,  .data = "\x0A\xFF" },
++    // Volume configuration register (0x0E): volume slew 512 steps
++    { .size = 2,  .data = "\x0E\x90" },
++    // Clock control register (0x00): 44/48kHz, MCLK=64xfs
++    { .size = 2,  .data = "\x00\x60" },
++    // Bank switch and eq control (0x50): no bank switching
++    { .size = 5,  .data = "\x50\x00\x00\x00\x00" },
++    // Volume registers (0x07, 0x08, 0x09, 0x0A)
++    { .size = 2,  .data = "\x07\x20" },
++    { .size = 2,  .data = "\x08\x30" },
++    { .size = 2,  .data = "\x09\x30" },
++    { .size = 2,  .data = "\x0A\xFF" },
++    // 0x72, 0x73, 0x76, 0x77 input mixer:
++    // no intermix between channels
++    { .size = 5,  .data = "\x72\x00\x00\x00\x00" },
++    { .size = 5,  .data = "\x73\x00\x80\x00\x00" },
++    { .size = 5,  .data = "\x76\x00\x00\x00\x00" },
++    { .size = 5,  .data = "\x77\x00\x80\x00\x00" },
++    // 0x70, 0x71, 0x74, 0x75 inline DRC mixer:
++    // no inline DRC inmix
++    { .size = 5,  .data = "\x70\x00\x80\x00\x00" },
++    { .size = 5,  .data = "\x71\x00\x00\x00\x00" },
++    { .size = 5,  .data = "\x74\x00\x80\x00\x00" },
++    { .size = 5,  .data = "\x75\x00\x00\x00\x00" },
++    // 0x56, 0x57 Output scale
++    { .size = 5,  .data = "\x56\x00\x80\x00\x00" },
++    { .size = 5,  .data = "\x57\x00\x02\x00\x00" },
++    // 0x3B, 0x3c
++    { .size = 9,  .data = "\x3B\x00\x08\x00\x00\x00\x78\x00\x00" },
++    { .size = 9,  .data = "\x3C\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
++    { .size = 9,  .data = "\x3E\x00\x08\x00\x00\x00\x78\x00\x00" },
++    { .size = 9,  .data = "\x3F\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
++    { .size = 9,  .data = "\x40\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
++    { .size = 9,  .data = "\x43\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
++    // 0x51, 0x52: output mixer
++    { .size = 9,  .data = "\x51\x00\x80\x00\x00\x00\x00\x00\x00" },
++    { .size = 9,  .data = "\x52\x00\x80\x00\x00\x00\x00\x00\x00" },
++    // PEQ defaults
++    { .size = 21,  .data = "\x29\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x2A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x2B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x2C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x2D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x2E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x2F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x30\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x31\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x32\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x33\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x34\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x35\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x36\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x58\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x59\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x5C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x5D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x5E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x5F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x5A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++    { .size = 21,  .data = "\x5B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
++};
++
++
++#endif  /* _TAS5713_H */
+--- a/sound/soc/soc-core.c
++++ b/sound/soc/soc-core.c
+@@ -1231,7 +1231,7 @@ found:
+  * Returns 0 on success, otherwise a negative error code.
+  */
+ int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
+-				unsigned int dai_fmt)
++	unsigned int dai_fmt)
+ {
+ 	struct snd_soc_dai *cpu_dai;
+ 	struct snd_soc_dai *codec_dai;
+@@ -1240,7 +1240,15 @@ int snd_soc_runtime_set_dai_fmt(struct s
+ 	int ret;
+ 
+ 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
+-		ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
++		unsigned int codec_dai_fmt = dai_fmt;
++
++		// there can only be one master when using multiple codecs
++		if (i && (codec_dai_fmt & SND_SOC_DAIFMT_MASTER_MASK)) {
++			codec_dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
++			codec_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
++		}
++
++		ret = snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
+ 		if (ret != 0 && ret != -ENOTSUPP)
+ 			return ret;
+ 	}
+@@ -1249,8 +1257,21 @@ int snd_soc_runtime_set_dai_fmt(struct s
+ 	 * Flip the polarity for the "CPU" end of a CODEC<->CODEC link
+ 	 * the component which has non_legacy_dai_naming is Codec
+ 	 */
+-	inv_dai_fmt = snd_soc_daifmt_clock_provider_fliped(dai_fmt);
+-
++	inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
++	switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
++	case SND_SOC_DAIFMT_CBM_CFM:
++		inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
++		break;
++	case SND_SOC_DAIFMT_CBM_CFS:
++		inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
++		break;
++	case SND_SOC_DAIFMT_CBS_CFM:
++		inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
++		break;
++	case SND_SOC_DAIFMT_CBS_CFS:
++		inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
++		break;
++	}
+ 	for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
+ 		unsigned int fmt = dai_fmt;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0085-rpi_display-add-backlight-driver-and-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0085-rpi_display-add-backlight-driver-and-overlay.patch
new file mode 100644
index 0000000000..957bd3cae5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0085-rpi_display-add-backlight-driver-and-overlay.patch
@@ -0,0 +1,172 @@
+From a69fe8364ec161c1c9a2c5691beea97b20ee664f Mon Sep 17 00:00:00 2001
+From: P33M <P33M@github.com>
+Date: Wed, 21 Oct 2015 14:55:21 +0100
+Subject: [PATCH] rpi_display: add backlight driver and overlay
+
+Add a mailbox-driven backlight controller for the Raspberry Pi DSI
+touchscreen display. Requires updated GPU firmware to recognise the
+mailbox request.
+
+Signed-off-by: Gordon Hollingworth <gordon@raspberrypi.org>
+
+Add Raspberry Pi firmware driver to the dependencies of backlight driver
+
+Otherwise the backlight driver fails to build if the firmware
+loading driver is not in the kernel
+
+Signed-off-by: Alex Riesen <alexander.riesen@cetitec.com>
+---
+ drivers/video/backlight/Kconfig         |   7 ++
+ drivers/video/backlight/Makefile        |   1 +
+ drivers/video/backlight/rpi_backlight.c | 119 ++++++++++++++++++++++++
+ 3 files changed, 127 insertions(+)
+ create mode 100644 drivers/video/backlight/rpi_backlight.c
+
+--- a/drivers/video/backlight/Kconfig
++++ b/drivers/video/backlight/Kconfig
+@@ -248,6 +248,13 @@ config BACKLIGHT_PWM
+ 	  If you have a LCD backlight adjustable by PWM, say Y to enable
+ 	  this driver.
+ 
++config BACKLIGHT_RPI
++	tristate "Raspberry Pi display firmware driven backlight"
++	depends on RASPBERRYPI_FIRMWARE
++	help
++	  If you have the Raspberry Pi DSI touchscreen display, say Y to
++	  enable the mailbox-controlled backlight driver.
++
+ config BACKLIGHT_DA903X
+ 	tristate "Backlight Driver for DA9030/DA9034 using WLED"
+ 	depends on PMIC_DA903X
+--- a/drivers/video/backlight/Makefile
++++ b/drivers/video/backlight/Makefile
+@@ -49,6 +49,7 @@ obj-$(CONFIG_BACKLIGHT_PANDORA)		+= pand
+ obj-$(CONFIG_BACKLIGHT_PCF50633)	+= pcf50633-backlight.o
+ obj-$(CONFIG_BACKLIGHT_PWM)		+= pwm_bl.o
+ obj-$(CONFIG_BACKLIGHT_QCOM_WLED)	+= qcom-wled.o
++obj-$(CONFIG_BACKLIGHT_RPI)			+= rpi_backlight.o
+ obj-$(CONFIG_BACKLIGHT_RT4831)		+= rt4831-backlight.o
+ obj-$(CONFIG_BACKLIGHT_SAHARA)		+= kb3886_bl.o
+ obj-$(CONFIG_BACKLIGHT_SKY81452)	+= sky81452-backlight.o
+--- /dev/null
++++ b/drivers/video/backlight/rpi_backlight.c
+@@ -0,0 +1,119 @@
++/*
++ * rpi_bl.c - Backlight controller through VPU
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/backlight.h>
++#include <linux/err.h>
++#include <linux/fb.h>
++#include <linux/gpio.h>
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_gpio.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++struct rpi_backlight {
++	struct device *dev;
++	struct device *fbdev;
++	struct rpi_firmware *fw;
++};
++
++static int rpi_backlight_update_status(struct backlight_device *bl)
++{
++	struct rpi_backlight *gbl = bl_get_data(bl);
++	int brightness = bl->props.brightness;
++	int ret;
++
++	if (bl->props.power != FB_BLANK_UNBLANK ||
++	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
++	    bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
++		brightness = 0;
++
++	ret = rpi_firmware_property(gbl->fw,
++			RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT,
++			&brightness, sizeof(brightness));
++	if (ret) {
++		dev_err(gbl->dev, "Failed to set brightness\n");
++		return ret;
++	}
++
++	if (brightness < 0) {
++		dev_err(gbl->dev, "Backlight change failed\n");
++		return -EAGAIN;
++	}
++
++	return 0;
++}
++
++static const struct backlight_ops rpi_backlight_ops = {
++	.options	= BL_CORE_SUSPENDRESUME,
++	.update_status	= rpi_backlight_update_status,
++};
++
++static int rpi_backlight_probe(struct platform_device *pdev)
++{
++	struct backlight_properties props;
++	struct backlight_device *bl;
++	struct rpi_backlight *gbl;
++	struct device_node *fw_node;
++
++	gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
++	if (gbl == NULL)
++		return -ENOMEM;
++
++	gbl->dev = &pdev->dev;
++
++	fw_node = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
++	if (!fw_node) {
++		dev_err(&pdev->dev, "Missing firmware node\n");
++		return -ENOENT;
++	}
++
++	gbl->fw = rpi_firmware_get(fw_node);
++	if (!gbl->fw)
++		return -EPROBE_DEFER;
++
++	memset(&props, 0, sizeof(props));
++	props.type = BACKLIGHT_RAW;
++	props.max_brightness = 255;
++	bl = devm_backlight_device_register(&pdev->dev, dev_name(&pdev->dev),
++					&pdev->dev, gbl, &rpi_backlight_ops,
++					&props);
++	if (IS_ERR(bl)) {
++		dev_err(&pdev->dev, "failed to register backlight\n");
++		return PTR_ERR(bl);
++	}
++
++	bl->props.brightness = 255;
++	backlight_update_status(bl);
++
++	platform_set_drvdata(pdev, bl);
++	return 0;
++}
++
++static const struct of_device_id rpi_backlight_of_match[] = {
++	{ .compatible = "raspberrypi,rpi-backlight" },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, rpi_backlight_of_match);
++
++static struct platform_driver rpi_backlight_driver = {
++	.driver		= {
++		.name		= "rpi-backlight",
++		.of_match_table = of_match_ptr(rpi_backlight_of_match),
++	},
++	.probe		= rpi_backlight_probe,
++};
++
++module_platform_driver(rpi_backlight_driver);
++
++MODULE_AUTHOR("Gordon Hollingworth <gordon@raspberrypi.org>");
++MODULE_DESCRIPTION("Raspberry Pi mailbox based Backlight Driver");
++MODULE_LICENSE("GPL");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0086-bcm2835-virtgpio-Virtual-GPIO-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0086-bcm2835-virtgpio-Virtual-GPIO-driver.patch
new file mode 100644
index 0000000000..97e0305859
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0086-bcm2835-virtgpio-Virtual-GPIO-driver.patch
@@ -0,0 +1,256 @@
+From 8b716d25755e304de06ce150a9ca9d96eb5e5afb Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 23 Feb 2016 19:56:04 +0000
+Subject: [PATCH] bcm2835-virtgpio: Virtual GPIO driver
+
+Add a virtual GPIO driver that uses the firmware mailbox interface to
+request that the VPU toggles LEDs.
+---
+ drivers/gpio/Kconfig         |   6 +
+ drivers/gpio/Makefile        |   1 +
+ drivers/gpio/gpio-bcm-virt.c | 214 +++++++++++++++++++++++++++++++++++
+ 3 files changed, 221 insertions(+)
+ create mode 100644 drivers/gpio/gpio-bcm-virt.c
+
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -194,6 +194,12 @@ config GPIO_BCM_XGS_IPROC
+ 	help
+ 	  Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
+ 
++config GPIO_BCM_VIRT
++	bool "Broadcom Virt GPIO"
++	depends on OF_GPIO && RASPBERRYPI_FIRMWARE && (ARCH_BCM2835 || COMPILE_TEST)
++	help
++	  Turn on virtual GPIO support for Broadcom BCM283X chips.
++
+ config GPIO_BRCMSTB
+ 	tristate "BRCMSTB GPIO support"
+ 	default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -38,6 +38,7 @@ obj-$(CONFIG_GPIO_ASPEED_SGPIO)		+= gpio
+ obj-$(CONFIG_GPIO_ATH79)		+= gpio-ath79.o
+ obj-$(CONFIG_GPIO_BCM_KONA)		+= gpio-bcm-kona.o
+ obj-$(CONFIG_GPIO_BCM_XGS_IPROC)	+= gpio-xgs-iproc.o
++obj-$(CONFIG_GPIO_BCM_VIRT)		+= gpio-bcm-virt.o
+ obj-$(CONFIG_GPIO_BD70528)		+= gpio-bd70528.o
+ obj-$(CONFIG_GPIO_BD71815)		+= gpio-bd71815.o
+ obj-$(CONFIG_GPIO_BD71828)		+= gpio-bd71828.o
+--- /dev/null
++++ b/drivers/gpio/gpio-bcm-virt.c
+@@ -0,0 +1,214 @@
++/*
++ *  brcmvirt GPIO driver
++ *
++ *  Copyright (C) 2012,2013 Dom Cobley <popcornmix@gmail.com>
++ *  Based on gpio-clps711x.c by Alexander Shiyan <shc_work@mail.ru>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++
++#include <linux/err.h>
++#include <linux/gpio.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/dma-mapping.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++#define MODULE_NAME "brcmvirt-gpio"
++#define NUM_GPIO 2
++
++struct brcmvirt_gpio {
++	struct gpio_chip	gc;
++	u32 __iomem		*ts_base;
++	/* two packed 16-bit counts of enabled and disables
++           Allows host to detect a brief enable that was missed */
++	u32			enables_disables[NUM_GPIO];
++	dma_addr_t		bus_addr;
++};
++
++static int brcmvirt_gpio_dir_in(struct gpio_chip *gc, unsigned off)
++{
++	struct brcmvirt_gpio *gpio;
++	gpio = container_of(gc, struct brcmvirt_gpio, gc);
++	return -EINVAL;
++}
++
++static int brcmvirt_gpio_dir_out(struct gpio_chip *gc, unsigned off, int val)
++{
++	struct brcmvirt_gpio *gpio;
++	gpio = container_of(gc, struct brcmvirt_gpio, gc);
++	return 0;
++}
++
++static int brcmvirt_gpio_get(struct gpio_chip *gc, unsigned off)
++{
++	struct brcmvirt_gpio *gpio;
++	unsigned v;
++	gpio = container_of(gc, struct brcmvirt_gpio, gc);
++	v = readl(gpio->ts_base + off);
++	return (v >> off) & 1;
++}
++
++static void brcmvirt_gpio_set(struct gpio_chip *gc, unsigned off, int val)
++{
++	struct brcmvirt_gpio *gpio;
++	u16 enables, disables;
++	s16 diff;
++	bool lit;
++	gpio = container_of(gc, struct brcmvirt_gpio, gc);
++	enables  = gpio->enables_disables[off] >> 16;
++	disables = gpio->enables_disables[off] >>  0;
++	diff = (s16)(enables - disables);
++	lit = diff > 0;
++	if ((val && lit) || (!val && !lit))
++		return;
++	if (val)
++		enables++;
++	else
++		disables++;
++	diff = (s16)(enables - disables);
++	BUG_ON(diff != 0 && diff != 1);
++	gpio->enables_disables[off] = (enables << 16) | (disables << 0);
++	writel(gpio->enables_disables[off], gpio->ts_base + off);
++}
++
++static int brcmvirt_gpio_probe(struct platform_device *pdev)
++{
++	int err = 0;
++	struct device *dev = &pdev->dev;
++	struct device_node *np = dev->of_node;
++	struct device_node *fw_node;
++	struct rpi_firmware *fw;
++	struct brcmvirt_gpio *ucb;
++	u32 gpiovirtbuf;
++
++	fw_node = of_parse_phandle(np, "firmware", 0);
++	if (!fw_node) {
++		dev_err(dev, "Missing firmware node\n");
++		return -ENOENT;
++	}
++
++	fw = rpi_firmware_get(fw_node);
++	if (!fw)
++		return -EPROBE_DEFER;
++
++	ucb = devm_kzalloc(dev, sizeof *ucb, GFP_KERNEL);
++	if (!ucb) {
++		err = -EINVAL;
++		goto out;
++	}
++
++	ucb->ts_base = dma_alloc_coherent(dev, PAGE_SIZE, &ucb->bus_addr, GFP_KERNEL);
++	if (!ucb->ts_base) {
++		pr_err("[%s]: failed to dma_alloc_coherent(%ld)\n",
++				__func__, PAGE_SIZE);
++		err = -ENOMEM;
++		goto out;
++	}
++
++	gpiovirtbuf = (u32)ucb->bus_addr;
++	err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_GPIOVIRTBUF,
++				    &gpiovirtbuf, sizeof(gpiovirtbuf));
++
++	if (err || gpiovirtbuf != 0) {
++		dev_warn(dev, "Failed to set gpiovirtbuf, trying to get err:%x\n", err);
++		dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
++		ucb->ts_base = 0;
++		ucb->bus_addr = 0;
++	}
++
++	if (!ucb->ts_base) {
++		err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF,
++					    &gpiovirtbuf, sizeof(gpiovirtbuf));
++
++		if (err) {
++			dev_err(dev, "Failed to get gpiovirtbuf\n");
++			goto out;
++		}
++
++		if (!gpiovirtbuf) {
++			dev_err(dev, "No virtgpio buffer\n");
++			err = -ENOENT;
++			goto out;
++		}
++
++		// mmap the physical memory
++		gpiovirtbuf &= ~0xc0000000;
++		ucb->ts_base = ioremap(gpiovirtbuf, 4096);
++		if (ucb->ts_base == NULL) {
++			dev_err(dev, "Failed to map physical address\n");
++			err = -ENOENT;
++			goto out;
++		}
++		ucb->bus_addr = 0;
++	}
++	ucb->gc.label = MODULE_NAME;
++	ucb->gc.owner = THIS_MODULE;
++	//ucb->gc.dev = dev;
++	ucb->gc.of_node = np;
++	ucb->gc.base = 100;
++	ucb->gc.ngpio = NUM_GPIO;
++
++	ucb->gc.direction_input = brcmvirt_gpio_dir_in;
++	ucb->gc.direction_output = brcmvirt_gpio_dir_out;
++	ucb->gc.get = brcmvirt_gpio_get;
++	ucb->gc.set = brcmvirt_gpio_set;
++	ucb->gc.can_sleep = true;
++
++	err = gpiochip_add(&ucb->gc);
++	if (err)
++		goto out;
++
++	platform_set_drvdata(pdev, ucb);
++
++	return 0;
++out:
++	if (ucb->bus_addr) {
++		dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
++		ucb->bus_addr = 0;
++		ucb->ts_base = NULL;
++	} else if (ucb->ts_base) {
++		iounmap(ucb->ts_base);
++		ucb->ts_base = NULL;
++	}
++	return err;
++}
++
++static int brcmvirt_gpio_remove(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	int err = 0;
++	struct brcmvirt_gpio *ucb = platform_get_drvdata(pdev);
++
++	gpiochip_remove(&ucb->gc);
++	if (ucb->bus_addr)
++		dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
++	else if (ucb->ts_base)
++		iounmap(ucb->ts_base);
++	return err;
++}
++
++static const struct of_device_id __maybe_unused brcmvirt_gpio_ids[] = {
++	{ .compatible = "brcm,bcm2835-virtgpio" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, brcmvirt_gpio_ids);
++
++static struct platform_driver brcmvirt_gpio_driver = {
++	.driver	= {
++		.name		= MODULE_NAME,
++		.owner		= THIS_MODULE,
++		.of_match_table	= of_match_ptr(brcmvirt_gpio_ids),
++	},
++	.probe	= brcmvirt_gpio_probe,
++	.remove	= brcmvirt_gpio_remove,
++};
++module_platform_driver(brcmvirt_gpio_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Dom Cobley <popcornmix@gmail.com>");
++MODULE_DESCRIPTION("brcmvirt GPIO driver");
++MODULE_ALIAS("platform:brcmvirt-gpio");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0087-OF-DT-Overlay-configfs-interface.patch b/target/linux/bcm27xx/patches-5.15/950-0087-OF-DT-Overlay-configfs-interface.patch
new file mode 100644
index 0000000000..1cff52fd9e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0087-OF-DT-Overlay-configfs-interface.patch
@@ -0,0 +1,427 @@
+From 01bd7f171238a2b9c634b9b7c2162269d8c8eb0e Mon Sep 17 00:00:00 2001
+From: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
+Date: Wed, 3 Dec 2014 13:23:28 +0200
+Subject: [PATCH] OF: DT-Overlay configfs interface
+
+This is a port of Pantelis Antoniou's v3 port that makes use of the
+new upstreamed configfs support for binary attributes.
+
+Original commit message:
+
+Add a runtime interface to using configfs for generic device tree overlay
+usage. With it its possible to use device tree overlays without having
+to use a per-platform overlay manager.
+
+Please see Documentation/devicetree/configfs-overlays.txt for more info.
+
+Changes since v2:
+- Removed ifdef CONFIG_OF_OVERLAY (since for now it's required)
+- Created a documentation entry
+- Slight rewording in Kconfig
+
+Changes since v1:
+- of_resolve() -> of_resolve_phandles().
+
+Originally-signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+DT configfs: Fix build errors on other platforms
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+DT configfs: fix build error
+
+There is an error when compiling rpi-4.6.y branch:
+  CC      drivers/of/configfs.o
+drivers/of/configfs.c:291:21: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
+   .default_groups = of_cfs_def_groups,
+                     ^
+drivers/of/configfs.c:291:21: note: (near initialization for 'of_cfs_subsys.su_group.default_groups.next')
+
+The .default_groups is linked list since commit
+1ae1602de028acaa42a0f6ff18d19756f8e825c6.
+This commit uses configfs_add_default_group to fix this problem.
+
+Signed-off-by: Slawomir Stepien <sst@poczta.fm>
+
+configfs: New of_overlay API
+---
+ .../devicetree/configfs-overlays.txt          |  31 ++
+ drivers/of/Kconfig                            |   7 +
+ drivers/of/Makefile                           |   1 +
+ drivers/of/configfs.c                         | 310 ++++++++++++++++++
+ 4 files changed, 349 insertions(+)
+ create mode 100644 Documentation/devicetree/configfs-overlays.txt
+ create mode 100644 drivers/of/configfs.c
+
+--- /dev/null
++++ b/Documentation/devicetree/configfs-overlays.txt
+@@ -0,0 +1,31 @@
++Howto use the configfs overlay interface.
++
++A device-tree configfs entry is created in /config/device-tree/overlays
++and and it is manipulated using standard file system I/O.
++Note that this is a debug level interface, for use by developers and
++not necessarily something accessed by normal users due to the
++security implications of having direct access to the kernel's device tree.
++
++* To create an overlay you mkdir the directory:
++
++	# mkdir /config/device-tree/overlays/foo
++
++* Either you echo the overlay firmware file to the path property file.
++
++	# echo foo.dtbo >/config/device-tree/overlays/foo/path
++
++* Or you cat the contents of the overlay to the dtbo file
++
++	# cat foo.dtbo >/config/device-tree/overlays/foo/dtbo
++
++The overlay file will be applied, and devices will be created/destroyed
++as required.
++
++To remove it simply rmdir the directory.
++
++	# rmdir /config/device-tree/overlays/foo
++
++The rationalle of the dual interface (firmware & direct copy) is that each is
++better suited to different use patterns. The firmware interface is what's
++intended to be used by hardware managers in the kernel, while the copy interface
++make sense for developers (since it avoids problems with namespaces).
+--- a/drivers/of/Kconfig
++++ b/drivers/of/Kconfig
+@@ -94,4 +94,11 @@ config OF_DMA_DEFAULT_COHERENT
+ 	# arches should select this if DMA is coherent by default for OF devices
+ 	bool
+ 
++config OF_CONFIGFS
++	bool "Device Tree Overlay ConfigFS interface"
++	select CONFIGFS_FS
++	select OF_OVERLAY
++	help
++	  Enable a simple user-space driven DT overlay interface.
++
+ endif # OF
+--- a/drivers/of/Makefile
++++ b/drivers/of/Makefile
+@@ -1,6 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ obj-y = base.o device.o platform.o property.o
+ obj-$(CONFIG_OF_KOBJ) += kobj.o
++obj-$(CONFIG_OF_CONFIGFS) += configfs.o
+ obj-$(CONFIG_OF_DYNAMIC) += dynamic.o
+ obj-$(CONFIG_OF_FLATTREE) += fdt.o
+ obj-$(CONFIG_OF_EARLY_FLATTREE) += fdt_address.o
+--- /dev/null
++++ b/drivers/of/configfs.c
+@@ -0,0 +1,310 @@
++/*
++ * Configfs entries for device-tree
++ *
++ * Copyright (C) 2013 - Pantelis Antoniou <panto@antoniou-consulting.com>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++#include <linux/ctype.h>
++#include <linux/cpu.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_fdt.h>
++#include <linux/spinlock.h>
++#include <linux/slab.h>
++#include <linux/proc_fs.h>
++#include <linux/configfs.h>
++#include <linux/types.h>
++#include <linux/stat.h>
++#include <linux/limits.h>
++#include <linux/file.h>
++#include <linux/vmalloc.h>
++#include <linux/firmware.h>
++#include <linux/sizes.h>
++
++#include "of_private.h"
++
++struct cfs_overlay_item {
++	struct config_item	item;
++
++	char			path[PATH_MAX];
++
++	const struct firmware	*fw;
++	struct device_node	*overlay;
++	int			ov_id;
++
++	void			*dtbo;
++	int			dtbo_size;
++};
++
++static int create_overlay(struct cfs_overlay_item *overlay, void *blob)
++{
++	int err;
++
++	/* unflatten the tree */
++	of_fdt_unflatten_tree(blob, NULL, &overlay->overlay);
++	if (overlay->overlay == NULL) {
++		pr_err("%s: failed to unflatten tree\n", __func__);
++		err = -EINVAL;
++		goto out_err;
++	}
++	pr_debug("%s: unflattened OK\n", __func__);
++
++	/* mark it as detached */
++	of_node_set_flag(overlay->overlay, OF_DETACHED);
++
++	/* perform resolution */
++	err = of_resolve_phandles(overlay->overlay);
++	if (err != 0) {
++		pr_err("%s: Failed to resolve tree\n", __func__);
++		goto out_err;
++	}
++	pr_debug("%s: resolved OK\n", __func__);
++
++	err = of_overlay_apply(overlay->overlay, &overlay->ov_id);
++	if (err < 0) {
++		pr_err("%s: Failed to create overlay (err=%d)\n",
++				__func__, err);
++		goto out_err;
++	}
++
++out_err:
++	return err;
++}
++
++static inline struct cfs_overlay_item *to_cfs_overlay_item(
++		struct config_item *item)
++{
++	return item ? container_of(item, struct cfs_overlay_item, item) : NULL;
++}
++
++static ssize_t cfs_overlay_item_path_show(struct config_item *item,
++		char *page)
++{
++	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
++	return sprintf(page, "%s\n", overlay->path);
++}
++
++static ssize_t cfs_overlay_item_path_store(struct config_item *item,
++		const char *page, size_t count)
++{
++	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
++	const char *p = page;
++	char *s;
++	int err;
++
++	/* if it's set do not allow changes */
++	if (overlay->path[0] != '\0' || overlay->dtbo_size > 0)
++		return -EPERM;
++
++	/* copy to path buffer (and make sure it's always zero terminated */
++	count = snprintf(overlay->path, sizeof(overlay->path) - 1, "%s", p);
++	overlay->path[sizeof(overlay->path) - 1] = '\0';
++
++	/* strip trailing newlines */
++	s = overlay->path + strlen(overlay->path);
++	while (s > overlay->path && *--s == '\n')
++		*s = '\0';
++
++	pr_debug("%s: path is '%s'\n", __func__, overlay->path);
++
++	err = request_firmware(&overlay->fw, overlay->path, NULL);
++	if (err != 0)
++		goto out_err;
++
++	err = create_overlay(overlay, (void *)overlay->fw->data);
++	if (err != 0)
++		goto out_err;
++
++	return count;
++
++out_err:
++
++	release_firmware(overlay->fw);
++	overlay->fw = NULL;
++
++	overlay->path[0] = '\0';
++	return err;
++}
++
++static ssize_t cfs_overlay_item_status_show(struct config_item *item,
++		char *page)
++{
++	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
++
++	return sprintf(page, "%s\n",
++			overlay->ov_id >= 0 ? "applied" : "unapplied");
++}
++
++CONFIGFS_ATTR(cfs_overlay_item_, path);
++CONFIGFS_ATTR_RO(cfs_overlay_item_, status);
++
++static struct configfs_attribute *cfs_overlay_attrs[] = {
++	&cfs_overlay_item_attr_path,
++	&cfs_overlay_item_attr_status,
++	NULL,
++};
++
++ssize_t cfs_overlay_item_dtbo_read(struct config_item *item,
++		void *buf, size_t max_count)
++{
++	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
++
++	pr_debug("%s: buf=%p max_count=%zu\n", __func__,
++			buf, max_count);
++
++	if (overlay->dtbo == NULL)
++		return 0;
++
++	/* copy if buffer provided */
++	if (buf != NULL) {
++		/* the buffer must be large enough */
++		if (overlay->dtbo_size > max_count)
++			return -ENOSPC;
++
++		memcpy(buf, overlay->dtbo, overlay->dtbo_size);
++	}
++
++	return overlay->dtbo_size;
++}
++
++ssize_t cfs_overlay_item_dtbo_write(struct config_item *item,
++		const void *buf, size_t count)
++{
++	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
++	int err;
++
++	/* if it's set do not allow changes */
++	if (overlay->path[0] != '\0' || overlay->dtbo_size > 0)
++		return -EPERM;
++
++	/* copy the contents */
++	overlay->dtbo = kmemdup(buf, count, GFP_KERNEL);
++	if (overlay->dtbo == NULL)
++		return -ENOMEM;
++
++	overlay->dtbo_size = count;
++
++	err = create_overlay(overlay, overlay->dtbo);
++	if (err != 0)
++		goto out_err;
++
++	return count;
++
++out_err:
++	kfree(overlay->dtbo);
++	overlay->dtbo = NULL;
++	overlay->dtbo_size = 0;
++
++	return err;
++}
++
++CONFIGFS_BIN_ATTR(cfs_overlay_item_, dtbo, NULL, SZ_1M);
++
++static struct configfs_bin_attribute *cfs_overlay_bin_attrs[] = {
++	&cfs_overlay_item_attr_dtbo,
++	NULL,
++};
++
++static void cfs_overlay_release(struct config_item *item)
++{
++	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
++
++	if (overlay->ov_id >= 0)
++		of_overlay_remove(&overlay->ov_id);
++	if (overlay->fw)
++		release_firmware(overlay->fw);
++	/* kfree with NULL is safe */
++	kfree(overlay->dtbo);
++	kfree(overlay);
++}
++
++static struct configfs_item_operations cfs_overlay_item_ops = {
++	.release	= cfs_overlay_release,
++};
++
++static struct config_item_type cfs_overlay_type = {
++	.ct_item_ops	= &cfs_overlay_item_ops,
++	.ct_attrs	= cfs_overlay_attrs,
++	.ct_bin_attrs	= cfs_overlay_bin_attrs,
++	.ct_owner	= THIS_MODULE,
++};
++
++static struct config_item *cfs_overlay_group_make_item(
++		struct config_group *group, const char *name)
++{
++	struct cfs_overlay_item *overlay;
++
++	overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
++	if (!overlay)
++		return ERR_PTR(-ENOMEM);
++	overlay->ov_id = -1;
++
++	config_item_init_type_name(&overlay->item, name, &cfs_overlay_type);
++	return &overlay->item;
++}
++
++static void cfs_overlay_group_drop_item(struct config_group *group,
++		struct config_item *item)
++{
++	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
++
++	config_item_put(&overlay->item);
++}
++
++static struct configfs_group_operations overlays_ops = {
++	.make_item	= cfs_overlay_group_make_item,
++	.drop_item	= cfs_overlay_group_drop_item,
++};
++
++static struct config_item_type overlays_type = {
++	.ct_group_ops   = &overlays_ops,
++	.ct_owner       = THIS_MODULE,
++};
++
++static struct configfs_group_operations of_cfs_ops = {
++	/* empty - we don't allow anything to be created */
++};
++
++static struct config_item_type of_cfs_type = {
++	.ct_group_ops   = &of_cfs_ops,
++	.ct_owner       = THIS_MODULE,
++};
++
++struct config_group of_cfs_overlay_group;
++
++static struct configfs_subsystem of_cfs_subsys = {
++	.su_group = {
++		.cg_item = {
++			.ci_namebuf = "device-tree",
++			.ci_type = &of_cfs_type,
++		},
++	},
++	.su_mutex = __MUTEX_INITIALIZER(of_cfs_subsys.su_mutex),
++};
++
++static int __init of_cfs_init(void)
++{
++	int ret;
++
++	pr_info("%s\n", __func__);
++
++	config_group_init(&of_cfs_subsys.su_group);
++	config_group_init_type_name(&of_cfs_overlay_group, "overlays",
++			&overlays_type);
++	configfs_add_default_group(&of_cfs_overlay_group,
++			&of_cfs_subsys.su_group);
++
++	ret = configfs_register_subsystem(&of_cfs_subsys);
++	if (ret != 0) {
++		pr_err("%s: failed to register subsys\n", __func__);
++		goto out;
++	}
++	pr_info("%s: OK\n", __func__);
++out:
++	return ret;
++}
++late_initcall(of_cfs_init);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0088-hci_h5-Don-t-send-conf_req-when-ACTIVE.patch b/target/linux/bcm27xx/patches-5.15/950-0088-hci_h5-Don-t-send-conf_req-when-ACTIVE.patch
new file mode 100644
index 0000000000..339b0cd985
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0088-hci_h5-Don-t-send-conf_req-when-ACTIVE.patch
@@ -0,0 +1,23 @@
+From ca209b265fd1f58052aae0c7db57557f84f0377e Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 17 Dec 2015 13:37:07 +0000
+Subject: [PATCH] hci_h5: Don't send conf_req when ACTIVE
+
+Without this patch, a modem and kernel can continuously bombard each
+other with conf_req and conf_rsp messages, in a demented game of tag.
+---
+ drivers/bluetooth/hci_h5.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/bluetooth/hci_h5.c
++++ b/drivers/bluetooth/hci_h5.c
+@@ -357,7 +357,8 @@ static void h5_handle_internal_rx(struct
+ 		h5_link_control(hu, conf_req, 3);
+ 	} else if (memcmp(data, conf_req, 2) == 0) {
+ 		h5_link_control(hu, conf_rsp, 2);
+-		h5_link_control(hu, conf_req, 3);
++		if (h5->state != H5_ACTIVE)
++		    h5_link_control(hu, conf_req, 3);
+ 	} else if (memcmp(data, conf_rsp, 2) == 0) {
+ 		if (H5_HDR_LEN(hdr) > 2)
+ 			h5->tx_win = (data[2] & 0x07);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0089-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch b/target/linux/bcm27xx/patches-5.15/950-0089-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch
new file mode 100644
index 0000000000..dbccb5070f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0089-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch
@@ -0,0 +1,72 @@
+From 374877efe7946546c4fa975bdff5b912d569daad Mon Sep 17 00:00:00 2001
+From: Michael Zoran <mzoran@crowfest.net>
+Date: Sat, 14 Jan 2017 21:43:57 -0800
+Subject: [PATCH] ARM64: Round-Robin dispatch IRQs between CPUs.
+
+IRQ-CPU mapping is round robined on ARM64 to increase
+concurrency and allow multiple interrupts to be serviced
+at a time.  This reduces the need for FIQ.
+
+Signed-off-by: Michael Zoran <mzoran@crowfest.net>
+---
+ drivers/irqchip/irq-bcm2835.c | 15 ++++++++++++++-
+ drivers/irqchip/irq-bcm2836.c | 21 +++++++++++++++++++++
+ 2 files changed, 35 insertions(+), 1 deletion(-)
+
+--- a/drivers/irqchip/irq-bcm2835.c
++++ b/drivers/irqchip/irq-bcm2835.c
+@@ -154,10 +154,23 @@ static void armctrl_unmask_irq(struct ir
+ 	}
+ }
+ 
++#ifdef CONFIG_ARM64
++void bcm2836_arm_irqchip_spin_gpu_irq(void);
++
++static void armctrl_ack_irq(struct irq_data *d)
++{
++	bcm2836_arm_irqchip_spin_gpu_irq();
++}
++
++#endif
++
+ static struct irq_chip armctrl_chip = {
+ 	.name = "ARMCTRL-level",
+ 	.irq_mask = armctrl_mask_irq,
+-	.irq_unmask = armctrl_unmask_irq
++	.irq_unmask = armctrl_unmask_irq,
++#ifdef CONFIG_ARM64
++	.irq_ack    = armctrl_ack_irq
++#endif
+ };
+ 
+ static int armctrl_xlate(struct irq_domain *d, struct device_node *ctrlr,
+--- a/drivers/irqchip/irq-bcm2836.c
++++ b/drivers/irqchip/irq-bcm2836.c
+@@ -87,6 +87,27 @@ static void bcm2836_arm_irqchip_unmask_g
+ {
+ }
+ 
++#ifdef CONFIG_ARM64
++
++void bcm2836_arm_irqchip_spin_gpu_irq(void)
++{
++	u32 i;
++	void __iomem *gpurouting = (intc.base + LOCAL_GPU_ROUTING);
++	u32 routing_val = readl(gpurouting);
++
++	for (i = 1; i <= 3; i++) {
++		u32 new_routing_val = (routing_val + i) & 3;
++
++		if (cpu_active(new_routing_val)) {
++			writel(new_routing_val, gpurouting);
++			return;
++		}
++	}
++}
++EXPORT_SYMBOL(bcm2836_arm_irqchip_spin_gpu_irq);
++
++#endif
++
+ static struct irq_chip bcm2836_arm_irqchip_gpu = {
+ 	.name		= "bcm2836-gpu",
+ 	.irq_mask	= bcm2836_arm_irqchip_mask_gpu_irq,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0090-ARM64-Force-hardware-emulation-of-deprecated-instruc.patch b/target/linux/bcm27xx/patches-5.15/950-0090-ARM64-Force-hardware-emulation-of-deprecated-instruc.patch
new file mode 100644
index 0000000000..3b8273038a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0090-ARM64-Force-hardware-emulation-of-deprecated-instruc.patch
@@ -0,0 +1,28 @@
+From f9692c96f39c68cc42acdf02fb7d262920c3f0e3 Mon Sep 17 00:00:00 2001
+From: Michael Zoran <mzoran@crowfest.net>
+Date: Sat, 11 Feb 2017 01:18:31 -0800
+Subject: [PATCH] ARM64: Force hardware emulation of deprecated
+ instructions.
+
+---
+ arch/arm64/kernel/armv8_deprecated.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/arch/arm64/kernel/armv8_deprecated.c
++++ b/arch/arm64/kernel/armv8_deprecated.c
+@@ -182,10 +182,15 @@ static void __init register_insn_emulati
+ 
+ 	switch (ops->status) {
+ 	case INSN_DEPRECATED:
++#if 0
+ 		insn->current_mode = INSN_EMULATE;
+ 		/* Disable the HW mode if it was turned on at early boot time */
+ 		run_all_cpu_set_hw_mode(insn, false);
++#else
++		insn->current_mode = INSN_HW;
++		run_all_cpu_set_hw_mode(insn, true);
+ 		insn->max = INSN_HW;
++#endif
+ 		break;
+ 	case INSN_OBSOLETE:
+ 		insn->current_mode = INSN_UNDEF;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0091-cache-export-clean-and-invalidate.patch b/target/linux/bcm27xx/patches-5.15/950-0091-cache-export-clean-and-invalidate.patch
new file mode 100644
index 0000000000..3cea28de09
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0091-cache-export-clean-and-invalidate.patch
@@ -0,0 +1,53 @@
+From 39570a04918133195cc8cee68e125c373a690cc0 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Fri, 25 Aug 2017 19:18:13 +0100
+Subject: [PATCH] cache: export clean and invalidate
+
+hack: cache: Fix linker error
+---
+ arch/arm/mm/cache-v6.S | 4 ++--
+ arch/arm/mm/cache-v7.S | 6 ++++--
+ 2 files changed, 6 insertions(+), 4 deletions(-)
+
+--- a/arch/arm/mm/cache-v6.S
++++ b/arch/arm/mm/cache-v6.S
+@@ -198,7 +198,7 @@ ENTRY(v6_flush_kern_dcache_area)
+  *	- start   - virtual start address of region
+  *	- end     - virtual end address of region
+  */
+-v6_dma_inv_range:
++ENTRY(v6_dma_inv_range)
+ #ifdef CONFIG_DMA_CACHE_RWFO
+ 	ldrb	r2, [r0]			@ read for ownership
+ 	strb	r2, [r0]			@ write for ownership
+@@ -243,7 +243,7 @@ v6_dma_inv_range:
+  *	- start   - virtual start address of region
+  *	- end     - virtual end address of region
+  */
+-v6_dma_clean_range:
++ENTRY(v6_dma_clean_range)
+ 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
+ 1:
+ #ifdef CONFIG_DMA_CACHE_RWFO
+--- a/arch/arm/mm/cache-v7.S
++++ b/arch/arm/mm/cache-v7.S
+@@ -363,7 +363,8 @@ ENDPROC(v7_flush_kern_dcache_area)
+  *	- start   - virtual start address of region
+  *	- end     - virtual end address of region
+  */
+-v7_dma_inv_range:
++ENTRY(b15_dma_inv_range)
++ENTRY(v7_dma_inv_range)
+ 	dcache_line_size r2, r3
+ 	sub	r3, r2, #1
+ 	tst	r0, r3
+@@ -393,7 +394,8 @@ ENDPROC(v7_dma_inv_range)
+  *	- start   - virtual start address of region
+  *	- end     - virtual end address of region
+  */
+-v7_dma_clean_range:
++ENTRY(b15_dma_clean_range)
++ENTRY(v7_dma_clean_range)
+ 	dcache_line_size r2, r3
+ 	sub	r3, r2, #1
+ 	bic	r0, r0, r3
diff --git a/target/linux/bcm27xx/patches-5.15/950-0092-AXI-performance-monitor-driver-2222.patch b/target/linux/bcm27xx/patches-5.15/950-0092-AXI-performance-monitor-driver-2222.patch
new file mode 100644
index 0000000000..025fca417e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0092-AXI-performance-monitor-driver-2222.patch
@@ -0,0 +1,691 @@
+From d20cfa47b7a0520f3d2e98a6fc49b28e69871d0c Mon Sep 17 00:00:00 2001
+From: James Hughes <JamesH65@users.noreply.github.com>
+Date: Tue, 14 Nov 2017 15:13:15 +0000
+Subject: [PATCH] AXI performance monitor driver (#2222)
+
+Uses the debugfs I/F to provide access to the AXI
+bus performance monitors.
+
+Requires the new mailbox peripheral access for access
+to the VPU performance registers, system bus access
+is done using direct register reads.
+
+Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
+
+raspberrypi_axi_monitor: suppress warning
+
+Suppress the following warning by casting the pointer to and uintptr_t
+before to u32:
+
+Signed-off-by: Matteo Croce <mcroce@redhat.com>
+---
+ drivers/perf/Kconfig                   |   8 +
+ drivers/perf/Makefile                  |   1 +
+ drivers/perf/raspberrypi_axi_monitor.c | 637 +++++++++++++++++++++++++
+ 3 files changed, 646 insertions(+)
+ create mode 100644 drivers/perf/raspberrypi_axi_monitor.c
+
+--- a/drivers/perf/Kconfig
++++ b/drivers/perf/Kconfig
+@@ -137,6 +137,14 @@ config ARM_DMC620_PMU
+ 	  Support for PMU events monitoring on the ARM DMC-620 memory
+ 	  controller.
+ 
++config RPI_AXIPERF
++        depends on ARCH_BCM2835
++        tristate "RaspberryPi AXI Performance monitors"
++        default n
++        help
++          Say y if you want to use Raspberry Pi AXI performance monitors, m if
++          you want to build it as a module.
++
+ source "drivers/perf/hisilicon/Kconfig"
+ 
+ endmenu
+--- a/drivers/perf/Makefile
++++ b/drivers/perf/Makefile
+@@ -14,3 +14,4 @@ obj-$(CONFIG_THUNDERX2_PMU) += thunderx2
+ obj-$(CONFIG_XGENE_PMU) += xgene_pmu.o
+ obj-$(CONFIG_ARM_SPE_PMU) += arm_spe_pmu.o
+ obj-$(CONFIG_ARM_DMC620_PMU) += arm_dmc620_pmu.o
++obj-$(CONFIG_RPI_AXIPERF) += raspberrypi_axi_monitor.o
+--- /dev/null
++++ b/drivers/perf/raspberrypi_axi_monitor.c
+@@ -0,0 +1,637 @@
++/*
++ * raspberrypi_axi_monitor.c
++ *
++ * Author: james.hughes@raspberrypi.org
++ *
++ * Raspberry Pi AXI performance counters.
++ *
++ * Copyright (C) 2017 Raspberry Pi Trading Ltd.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/debugfs.h>
++#include <linux/devcoredump.h>
++#include <linux/device.h>
++#include <linux/kthread.h>
++#include <linux/module.h>
++#include <linux/netdevice.h>
++#include <linux/mutex.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++#define NUM_MONITORS 2
++#define NUM_BUS_WATCHERS_PER_MONITOR 3
++
++#define SYSTEM_MONITOR 0
++#define VPU_MONITOR 1
++
++#define MAX_BUSES 16
++#define DEFAULT_SAMPLE_TIME 100
++
++#define NUM_BUS_WATCHER_RESULTS 9
++
++struct bus_watcher_data {
++	union	{
++		u32 results[NUM_BUS_WATCHER_RESULTS];
++		struct {
++			u32 atrans;
++			u32 atwait;
++			u32 amax;
++			u32 wtrans;
++			u32 wtwait;
++			u32 wmax;
++			u32 rtrans;
++			u32 rtwait;
++			u32 rmax;
++		};
++	};
++};
++
++
++struct rpi_axiperf {
++	struct platform_device *dev;
++	struct dentry *root_folder;
++
++	struct task_struct *monitor_thread;
++	struct mutex lock;
++
++	struct rpi_firmware *firmware;
++
++	/* Sample time spent on for each bus */
++	int sample_time;
++
++	/* Now storage for the per monitor settings and the resulting
++	 * performance figures
++	 */
++	struct {
++		/* Bit field of buses we want to monitor */
++		int bus_enabled;
++		/* Bit field of buses to filter by */
++		int bus_filter;
++		/* The current buses being monitored on this monitor */
++		int current_bus[NUM_BUS_WATCHERS_PER_MONITOR];
++		/* The last bus monitored on this monitor */
++		int last_monitored;
++
++		/* Set true if this mailbox must use the mailbox interface
++		 * rather than access registers directly.
++		 */
++		int use_mailbox_interface;
++
++		/* Current result values */
++		struct bus_watcher_data results[MAX_BUSES];
++
++		struct dentry *debugfs_entry;
++		void __iomem *base_address;
++
++	}  monitor[NUM_MONITORS];
++
++};
++
++static struct rpi_axiperf *state;
++
++/* Two monitors, System and VPU, each with the following register sets.
++ * Each monitor can only monitor one bus at a time, so we time share them,
++ * giving each bus 100ms (default, settable via debugfs) of time on its
++ * associated monitor
++ * Record results from the three Bus watchers per monitor and push to the sysfs
++ */
++
++/* general registers */
++const int GEN_CTRL;
++
++const int GEN_CTL_ENABLE_BIT	= BIT(0);
++const int GEN_CTL_RESET_BIT	= BIT(1);
++
++/* Bus watcher registers */
++const int BW_PITCH		= 0x40;
++
++const int BW0_CTRL		= 0x40;
++const int BW1_CTRL		= 0x80;
++const int BW2_CTRL		= 0xc0;
++
++const int BW_ATRANS_OFFSET	= 0x04;
++const int BW_ATWAIT_OFFSET	= 0x08;
++const int BW_AMAX_OFFSET	= 0x0c;
++const int BW_WTRANS_OFFSET	= 0x10;
++const int BW_WTWAIT_OFFSET	= 0x14;
++const int BW_WMAX_OFFSET	= 0x18;
++const int BW_RTRANS_OFFSET	= 0x1c;
++const int BW_RTWAIT_OFFSET	= 0x20;
++const int BW_RMAX_OFFSET	= 0x24;
++
++const int BW_CTRL_RESET_BIT	= BIT(31);
++const int BW_CTRL_ENABLE_BIT	= BIT(30);
++const int BW_CTRL_ENABLE_ID_FILTER_BIT	= BIT(29);
++const int BW_CTRL_LIMIT_HALT_BIT	= BIT(28);
++
++const int BW_CTRL_SOURCE_SHIFT	= 8;
++const int BW_CTRL_SOURCE_MASK	= GENMASK(12, 8); // 5 bits
++const int BW_CTRL_BUS_WATCH_SHIFT;
++const int BW_CTRL_BUS_WATCH_MASK = GENMASK(5, 0); // 6 bits
++const int BW_CTRL_BUS_FILTER_SHIFT = 8;
++
++const static char *bus_filter_strings[] = {
++	"",
++	"CORE0_V",
++	"ICACHE0",
++	"DCACHE0",
++	"CORE1_V",
++	"ICACHE1",
++	"DCACHE1",
++	"L2_MAIN",
++	"HOST_PORT",
++	"HOST_PORT2",
++	"HVS",
++	"ISP",
++	"VIDEO_DCT",
++	"VIDEO_SD2AXI",
++	"CAM0",
++	"CAM1",
++	"DMA0",
++	"DMA1",
++	"DMA2_VPU",
++	"JPEG",
++	"VIDEO_CME",
++	"TRANSPOSER",
++	"VIDEO_FME",
++	"CCP2TX",
++	"USB",
++	"V3D0",
++	"V3D1",
++	"V3D2",
++	"AVE",
++	"DEBUG",
++	"CPU",
++	"M30"
++};
++
++const int num_bus_filters = ARRAY_SIZE(bus_filter_strings);
++
++const static char *system_bus_string[] = {
++	"DMA_L2",
++	"TRANS",
++	"JPEG",
++	"SYSTEM_UC",
++	"DMA_UC",
++	"SYSTEM_L2",
++	"CCP2TX",
++	"MPHI_RX",
++	"MPHI_TX",
++	"HVS",
++	"H264",
++	"ISP",
++	"V3D",
++	"PERIPHERAL",
++	"CPU_UC",
++	"CPU_L2"
++};
++
++const int num_system_buses = ARRAY_SIZE(system_bus_string);
++
++const static char *vpu_bus_string[] = {
++	"VPU1_D_L2",
++	"VPU0_D_L2",
++	"VPU1_I_L2",
++	"VPU0_I_L2",
++	"SYSTEM_L2",
++	"L2_FLUSH",
++	"DMA_L2",
++	"VPU1_D_UC",
++	"VPU0_D_UC",
++	"VPU1_I_UC",
++	"VPU0_I_UC",
++	"SYSTEM_UC",
++	"L2_OUT",
++	"DMA_UC",
++	"SDRAM",
++	"L2_IN"
++};
++
++const int num_vpu_buses = ARRAY_SIZE(vpu_bus_string);
++
++const static char *monitor_name[] = {
++	"System",
++	"VPU"
++};
++
++static inline void write_reg(int monitor, int reg, u32 value)
++{
++	writel(value, state->monitor[monitor].base_address + reg);
++}
++
++static inline u32 read_reg(int monitor, u32 reg)
++{
++	return readl(state->monitor[monitor].base_address + reg);
++}
++
++static void read_bus_watcher(int monitor, int watcher, u32 *results)
++{
++	if (state->monitor[monitor].use_mailbox_interface) {
++		/* We have 9 results, plus the overheads of start address and
++		 * length So 11 u32 to define
++		 */
++		u32 tmp[11];
++		int err;
++
++		tmp[0] = (u32)(uintptr_t)(state->monitor[monitor].base_address + watcher
++				+ BW_ATRANS_OFFSET);
++		tmp[1] = NUM_BUS_WATCHER_RESULTS;
++
++		err = rpi_firmware_property(state->firmware,
++					    RPI_FIRMWARE_GET_PERIPH_REG,
++					    tmp, sizeof(tmp));
++
++		if (err < 0 || tmp[1] != NUM_BUS_WATCHER_RESULTS)
++			dev_err_once(&state->dev->dev,
++				     "Failed to read bus watcher");
++		else
++			memcpy(results, &tmp[2],
++			       NUM_BUS_WATCHER_RESULTS * sizeof(u32));
++	} else {
++		int i;
++		void __iomem *addr = state->monitor[monitor].base_address
++				+ watcher + BW_ATRANS_OFFSET;
++		for (i = 0; i < NUM_BUS_WATCHER_RESULTS; i++, addr += 4)
++			*results++ = readl(addr);
++	}
++}
++
++static void set_monitor_control(int monitor, u32 set)
++{
++	if (state->monitor[monitor].use_mailbox_interface) {
++		u32 tmp[3] = {(u32)(uintptr_t)(state->monitor[monitor].base_address +
++				GEN_CTRL), 1, set};
++		int err = rpi_firmware_property(state->firmware,
++						RPI_FIRMWARE_SET_PERIPH_REG,
++						tmp, sizeof(tmp));
++
++		if (err < 0 || tmp[1] != 1)
++			dev_err_once(&state->dev->dev,
++				"Failed to set monitor control");
++	} else
++		write_reg(monitor, GEN_CTRL, set);
++}
++
++static void set_bus_watcher_control(int monitor, int watcher, u32 set)
++{
++	if (state->monitor[monitor].use_mailbox_interface) {
++		u32 tmp[3] = {(u32)(uintptr_t)(state->monitor[monitor].base_address +
++				    watcher), 1, set};
++		int err = rpi_firmware_property(state->firmware,
++						RPI_FIRMWARE_SET_PERIPH_REG,
++						tmp, sizeof(tmp));
++		if (err < 0 || tmp[1] != 1)
++			dev_err_once(&state->dev->dev,
++				"Failed to set bus watcher control");
++	} else
++		write_reg(monitor, watcher, set);
++}
++
++static void monitor(struct rpi_axiperf *state)
++{
++	int monitor, num_buses[NUM_MONITORS];
++
++	mutex_lock(&state->lock);
++
++	for (monitor = 0; monitor < NUM_MONITORS; monitor++) {
++		typeof(state->monitor[0]) *mon = &(state->monitor[monitor]);
++
++		/* Anything enabled? */
++		if (mon->bus_enabled == 0) {
++			/* No, disable all monitoring for this monitor */
++			set_monitor_control(monitor, GEN_CTL_RESET_BIT);
++		} else {
++			int i;
++
++			/* Find out how many busses we want to monitor, and
++			 * spread our 3 actual monitors over them
++			 */
++			num_buses[monitor] = hweight32(mon->bus_enabled);
++			num_buses[monitor] = min(num_buses[monitor],
++						 NUM_BUS_WATCHERS_PER_MONITOR);
++
++			for (i = 0; i < num_buses[monitor]; i++) {
++				int bus_control;
++
++				do {
++					mon->last_monitored++;
++					mon->last_monitored &= 0xf;
++				} while ((mon->bus_enabled &
++					 (1 << mon->last_monitored)) == 0);
++
++				mon->current_bus[i] = mon->last_monitored;
++
++				/* Reset the counters */
++				set_bus_watcher_control(monitor,
++							BW0_CTRL +
++							i*BW_PITCH,
++							BW_CTRL_RESET_BIT);
++
++				bus_control = BW_CTRL_ENABLE_BIT |
++						mon->current_bus[i];
++
++				if (mon->bus_filter) {
++					bus_control |=
++						BW_CTRL_ENABLE_ID_FILTER_BIT;
++					bus_control |=
++						((mon->bus_filter & 0x1f)
++						<< BW_CTRL_BUS_FILTER_SHIFT);
++				}
++
++				// Start capture
++				set_bus_watcher_control(monitor,
++							BW0_CTRL + i*BW_PITCH,
++							bus_control);
++			}
++		}
++
++		/* start monitoring */
++		set_monitor_control(monitor, GEN_CTL_ENABLE_BIT);
++	}
++
++	mutex_unlock(&state->lock);
++
++	msleep(state->sample_time);
++
++	/* Now read the results */
++
++	mutex_lock(&state->lock);
++	for (monitor = 0; monitor < NUM_MONITORS; monitor++) {
++		typeof(state->monitor[0]) *mon = &(state->monitor[monitor]);
++
++		/* Anything enabled? */
++		if (mon->bus_enabled == 0) {
++			/* No, disable all monitoring for this monitor */
++			set_monitor_control(monitor, 0);
++		} else {
++			int i;
++
++			for (i = 0; i < num_buses[monitor]; i++) {
++				int bus = mon->current_bus[i];
++
++				read_bus_watcher(monitor,
++					BW0_CTRL + i*BW_PITCH,
++					(u32 *)&mon->results[bus].results);
++			}
++		}
++	}
++	mutex_unlock(&state->lock);
++}
++
++static int monitor_thread(void *data)
++{
++	struct rpi_axiperf *state  = data;
++
++	while (1) {
++		monitor(state);
++
++		if (kthread_should_stop())
++			return 0;
++	}
++	return 0;
++}
++
++static ssize_t myreader(struct file *fp, char __user *user_buffer,
++			size_t count, loff_t *position)
++{
++#define INIT_BUFF_SIZE 2048
++
++	int i;
++	int idx = (int)(uintptr_t)(fp->private_data);
++	int num_buses, cnt;
++	char *string_buffer;
++	int buff_size = INIT_BUFF_SIZE;
++	char *p;
++	typeof(state->monitor[0]) *mon = &(state->monitor[idx]);
++
++	if (idx < 0 || idx > NUM_MONITORS)
++		idx = 0;
++
++	num_buses = idx == SYSTEM_MONITOR ? num_system_buses : num_vpu_buses;
++
++	string_buffer = kmalloc(buff_size, GFP_KERNEL);
++
++	if (!string_buffer) {
++		dev_err(&state->dev->dev,
++				"Failed temporary string allocation\n");
++		return 0;
++	}
++
++	p = string_buffer;
++
++	mutex_lock(&state->lock);
++
++	if (mon->bus_filter) {
++		int filt = min(mon->bus_filter & 0x1f, num_bus_filters);
++
++		cnt = snprintf(p, buff_size,
++			       "\nMonitoring transactions from %s only\n",
++			       bus_filter_strings[filt]);
++		p += cnt;
++		buff_size -= cnt;
++	}
++
++	cnt = snprintf(p, buff_size, "     Bus   |    Atrans    Atwait      AMax    Wtrans    Wtwait      WMax    Rtrans    Rtwait      RMax\n"
++				     "======================================================================================================\n");
++
++	if (cnt >= buff_size)
++		goto done;
++
++	p += cnt;
++	buff_size -= cnt;
++
++	for (i = 0; i < num_buses; i++) {
++		if (mon->bus_enabled & (1 << i)) {
++#define DIVIDER (1024)
++			typeof(mon->results[0]) *res = &(mon->results[i]);
++
++			cnt = snprintf(p, buff_size,
++					"%10s | %8uK %8uK %8uK %8uK %8uK %8uK %8uK %8uK %8uK\n",
++					idx == SYSTEM_MONITOR ?
++						system_bus_string[i] :
++						vpu_bus_string[i],
++					res->atrans/DIVIDER,
++					res->atwait/DIVIDER,
++					res->amax/DIVIDER,
++					res->wtrans/DIVIDER,
++					res->wtwait/DIVIDER,
++					res->wmax/DIVIDER,
++					res->rtrans/DIVIDER,
++					res->rtwait/DIVIDER,
++					res->rmax/DIVIDER
++					);
++			if (cnt >= buff_size)
++				goto done;
++
++			p += cnt;
++			buff_size -= cnt;
++		}
++	}
++
++	mutex_unlock(&state->lock);
++
++done:
++
++	/* did the last string entry exceeed our buffer size? ie out of string
++	 * buffer space. Null terminate, use what we have.
++	 */
++	if (cnt >= buff_size) {
++		buff_size = 0;
++		string_buffer[INIT_BUFF_SIZE] = 0;
++	}
++
++	cnt = simple_read_from_buffer(user_buffer, count, position,
++				      string_buffer,
++				      INIT_BUFF_SIZE - buff_size);
++
++	kfree(string_buffer);
++
++	return cnt;
++}
++
++static ssize_t mywriter(struct file *fp, const char __user *user_buffer,
++			size_t count, loff_t *position)
++{
++	int idx = (int)(uintptr_t)(fp->private_data);
++
++	if (idx < 0 || idx > NUM_MONITORS)
++		idx = 0;
++
++	/* At the moment, this does nothing, but in the future it could be
++	 * used to reset counters etc
++	 */
++	return count;
++}
++
++static const struct file_operations fops_debug = {
++	.read = myreader,
++	.write = mywriter,
++	.open = simple_open
++};
++
++static int rpi_axiperf_probe(struct platform_device *pdev)
++{
++	int ret = 0, i;
++	struct device *dev = &pdev->dev;
++	struct device_node *np = dev->of_node;
++	struct device_node *fw_node;
++
++	state = kzalloc(sizeof(struct rpi_axiperf), GFP_KERNEL);
++	if (!state)
++		return -ENOMEM;
++
++	/* Get the firmware handle for future rpi-firmware-xxx calls */
++	fw_node = of_parse_phandle(np, "firmware", 0);
++	if (!fw_node) {
++		dev_err(dev, "Missing firmware node\n");
++		return -ENOENT;
++	}
++
++	state->firmware = rpi_firmware_get(fw_node);
++	if (!state->firmware)
++		return -EPROBE_DEFER;
++
++	/* Special case for the VPU monitor, we must use the mailbox interface
++	 * as it is not accessible from the ARM address space.
++	 */
++	state->monitor[VPU_MONITOR].use_mailbox_interface = 1;
++	state->monitor[SYSTEM_MONITOR].use_mailbox_interface = 0;
++
++	for (i = 0; i < NUM_MONITORS; i++) {
++		if (state->monitor[i].use_mailbox_interface) {
++			 of_property_read_u32_index(np, "reg", i*2,
++				(u32 *)(&state->monitor[i].base_address));
++		} else {
++			struct resource *resource =
++				platform_get_resource(pdev, IORESOURCE_MEM, i);
++
++			state->monitor[i].base_address =
++				devm_ioremap_resource(&pdev->dev, resource);
++		}
++
++		if (IS_ERR(state->monitor[i].base_address))
++			return PTR_ERR(state->monitor[i].base_address);
++
++		/* Enable all buses by default */
++		state->monitor[i].bus_enabled = 0xffff;
++	}
++
++	state->dev = pdev;
++	platform_set_drvdata(pdev, state);
++
++	state->sample_time = DEFAULT_SAMPLE_TIME;
++
++	/* Set up all the debugfs stuff */
++	state->root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
++
++	for (i = 0; i < NUM_MONITORS; i++) {
++		state->monitor[i].debugfs_entry =
++			debugfs_create_dir(monitor_name[i], state->root_folder);
++		if (IS_ERR(state->monitor[i].debugfs_entry))
++			state->monitor[i].debugfs_entry = NULL;
++
++		debugfs_create_file("data", 0444,
++				    state->monitor[i].debugfs_entry,
++				    (void *)(uintptr_t)i, &fops_debug);
++		debugfs_create_u32("enable", 0644,
++				   state->monitor[i].debugfs_entry,
++				   &state->monitor[i].bus_enabled);
++		debugfs_create_u32("filter", 0644,
++				   state->monitor[i].debugfs_entry,
++				   &state->monitor[i].bus_filter);
++		debugfs_create_u32("sample_time", 0644,
++				   state->monitor[i].debugfs_entry,
++				   &state->sample_time);
++	}
++
++	mutex_init(&state->lock);
++
++	state->monitor_thread = kthread_run(monitor_thread, state,
++					    "rpi-axiperfmon");
++
++	return ret;
++
++}
++
++static int rpi_axiperf_remove(struct platform_device *dev)
++{
++	int ret = 0;
++
++	kthread_stop(state->monitor_thread);
++
++	debugfs_remove_recursive(state->root_folder);
++	state->root_folder = NULL;
++
++	return ret;
++}
++
++static const struct of_device_id rpi_axiperf_match[] = {
++	{
++		.compatible = "brcm,bcm2835-axiperf",
++	},
++	{},
++};
++MODULE_DEVICE_TABLE(of, rpi_axiperf_match);
++
++static struct platform_driver rpi_axiperf_driver  = {
++	.probe =	rpi_axiperf_probe,
++	.remove =	rpi_axiperf_remove,
++	.driver = {
++		.name   = "rpi-bcm2835-axiperf",
++		.of_match_table = of_match_ptr(rpi_axiperf_match),
++	},
++};
++
++module_platform_driver(rpi_axiperf_driver);
++
++/* Module information */
++MODULE_AUTHOR("James Hughes <james.hughes@raspberrypi.org>");
++MODULE_DESCRIPTION("RPI AXI Performance monitor driver");
++MODULE_LICENSE("GPL");
++
diff --git a/target/linux/bcm27xx/patches-5.15/950-0093-ARM-bcm2835-Set-Serial-number-and-Revision.patch b/target/linux/bcm27xx/patches-5.15/950-0093-ARM-bcm2835-Set-Serial-number-and-Revision.patch
new file mode 100644
index 0000000000..6d66181625
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0093-ARM-bcm2835-Set-Serial-number-and-Revision.patch
@@ -0,0 +1,63 @@
+From 14cd948e16714fd0d2c08763aebd641136117421 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Wed, 3 Jun 2015 12:26:13 +0200
+Subject: [PATCH] ARM: bcm2835: Set Serial number and Revision
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The VideoCore bootloader passes in Serial number and
+Revision number through Device Tree. Make these available to
+userspace through /proc/cpuinfo.
+
+Mainline status:
+
+There is a commit in linux-next that standardize passing the serial
+number through Device Tree (string: /serial-number):
+ARM: 8355/1: arch: Show the serial number from devicetree in cpuinfo
+
+There was an attempt to do the same with the revision number, but it
+didn't get in:
+[PATCH v2 1/2] arm: devtree: Set system_rev from DT revision
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -6,12 +6,25 @@
+ #include <linux/init.h>
+ #include <linux/irqchip.h>
+ #include <linux/of_address.h>
++#include <asm/system_info.h>
+ 
+ #include <asm/mach/arch.h>
+ #include <asm/mach/map.h>
+ 
+ #include "platsmp.h"
+ 
++static void __init bcm2835_init(void)
++{
++	struct device_node *np = of_find_node_by_path("/system");
++	u32 val;
++	u64 val64;
++
++	if (!of_property_read_u32(np, "linux,revision", &val))
++		system_rev = val;
++	if (!of_property_read_u64(np, "linux,serial", &val64))
++		system_serial_low = val64;
++}
++
+ static const char * const bcm2835_compat[] = {
+ #ifdef CONFIG_ARCH_MULTI_V6
+ 	"brcm,bcm2835",
+@@ -24,6 +37,7 @@ static const char * const bcm2835_compat
+ };
+ 
+ DT_MACHINE_START(BCM2835, "BCM2835")
++	.init_machine = bcm2835_init,
+ 	.dt_compat = bcm2835_compat,
+ 	.smp = smp_ops(bcm2836_smp_ops),
+ MACHINE_END
diff --git a/target/linux/bcm27xx/patches-5.15/950-0094-dwc-otg-FIQ-Fix-bad-mode-in-data-abort-handler.patch b/target/linux/bcm27xx/patches-5.15/950-0094-dwc-otg-FIQ-Fix-bad-mode-in-data-abort-handler.patch
new file mode 100644
index 0000000000..9b8901556f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0094-dwc-otg-FIQ-Fix-bad-mode-in-data-abort-handler.patch
@@ -0,0 +1,116 @@
+From 4f9c11c4e91812d3b779eca65c6d5e2710252771 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 16 Jul 2018 14:40:13 +0100
+Subject: [PATCH] dwc-otg: FIQ: Fix "bad mode in data abort handler"
+
+Create a semi-static mapping for the USB registers early in the boot
+process, before additional kernel threads are started, so all threads
+will have the mappings from the start. This avoids the need for
+data aborts to lazily update them.
+
+See: https://github.com/raspberrypi/linux/issues/2450
+
+Signed-off-by: Floris Bos <bos@je-eigen-domein.nl>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 69 +++++++++++++++++++++++++++++++
+ 1 file changed, 69 insertions(+)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -6,6 +6,7 @@
+ #include <linux/init.h>
+ #include <linux/irqchip.h>
+ #include <linux/of_address.h>
++#include <linux/of_fdt.h>
+ #include <asm/system_info.h>
+ 
+ #include <asm/mach/arch.h>
+@@ -13,6 +14,9 @@
+ 
+ #include "platsmp.h"
+ 
++#define BCM2835_USB_VIRT_BASE   0xf0980000
++#define BCM2835_USB_VIRT_MPHI   0xf0006000
++
+ static void __init bcm2835_init(void)
+ {
+ 	struct device_node *np = of_find_node_by_path("/system");
+@@ -25,6 +29,70 @@ static void __init bcm2835_init(void)
+ 		system_serial_low = val64;
+ }
+ 
++/*
++ * We need to map registers that are going to be accessed by the FIQ
++ * very early, before any kernel threads are spawned. Because if done
++ * later, the mapping tables are not updated instantly but lazily upon
++ * first access through a data abort handler. While that is fine
++ * when executing regular kernel code, if the first access in a specific
++ * thread happens while running FIQ code this will result in a panic.
++ *
++ * For more background see the following old mailing list thread:
++ * https://www.spinics.net/lists/arm-kernel/msg325250.html
++ */
++static int __init bcm2835_map_usb(unsigned long node, const char *uname,
++					int depth, void *data)
++{
++	struct map_desc map[2];
++	const __be32 *reg;
++	int len;
++	unsigned long p2b_offset = *((unsigned long *) data);
++
++	if (!of_flat_dt_is_compatible(node, "brcm,bcm2708-usb"))
++		return 0;
++	reg = of_get_flat_dt_prop(node, "reg", &len);
++	if (!reg || len != (sizeof(unsigned long) * 4))
++		return 0;
++
++	/* Use information about the physical addresses of the
++	 * registers from the device tree, but use legacy
++	 * iotable_init() static mapping function to map them,
++	 * as ioremap() is not functional at this stage in boot.
++	 */
++	map[0].virtual = (unsigned long) BCM2835_USB_VIRT_BASE;
++	map[0].pfn = __phys_to_pfn(be32_to_cpu(reg[0]) - p2b_offset);
++	map[0].length = be32_to_cpu(reg[1]);
++	map[0].type = MT_DEVICE;
++	map[1].virtual = (unsigned long) BCM2835_USB_VIRT_MPHI;
++	map[1].pfn = __phys_to_pfn(be32_to_cpu(reg[2]) - p2b_offset);
++	map[1].length = be32_to_cpu(reg[3]);
++	map[1].type = MT_DEVICE;
++		iotable_init(map, 2);
++
++	return 1;
++}
++
++static void __init bcm2835_map_io(void)
++{
++	const __be32 *ranges;
++	int soc, len;
++	unsigned long p2b_offset;
++
++	debug_ll_io_init();
++
++	/* Find out how to map bus to physical address first from soc/ranges */
++	soc = of_get_flat_dt_subnode_by_name(of_get_flat_dt_root(), "soc");
++	if (soc < 0)
++		return;
++	ranges = of_get_flat_dt_prop(soc, "ranges", &len);
++	if (!ranges || len < (sizeof(unsigned long) * 3))
++		return;
++	p2b_offset = be32_to_cpu(ranges[0]) - be32_to_cpu(ranges[1]);
++
++	/* Now search for bcm2708-usb node in device tree */
++	of_scan_flat_dt(bcm2835_map_usb, &p2b_offset);
++}
++
+ static const char * const bcm2835_compat[] = {
+ #ifdef CONFIG_ARCH_MULTI_V6
+ 	"brcm,bcm2835",
+@@ -37,6 +105,7 @@ static const char * const bcm2835_compat
+ };
+ 
+ DT_MACHINE_START(BCM2835, "BCM2835")
++	.map_io = bcm2835_map_io,
+ 	.init_machine = bcm2835_init,
+ 	.dt_compat = bcm2835_compat,
+ 	.smp = smp_ops(bcm2836_smp_ops),
diff --git a/target/linux/bcm27xx/patches-5.15/950-0095-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch b/target/linux/bcm27xx/patches-5.15/950-0095-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch
new file mode 100644
index 0000000000..cf973dd651
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0095-ARM-Activate-FIQs-to-avoid-__irq_startup-warnings.patch
@@ -0,0 +1,36 @@
+From 7ec587ff2a465add90bc7b01798f59f7375bfd3e Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 11 Dec 2017 09:18:32 +0000
+Subject: [PATCH] ARM: Activate FIQs to avoid __irq_startup warnings
+
+There is a new test in __irq_startup that the IRQ is activated, which
+hasn't been the case for FIQs since they bypass some of the usual setup.
+
+Augment enable_fiq to include a call to irq_activate to avoid the
+warning.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/kernel/fiq.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/arch/arm/kernel/fiq.c
++++ b/arch/arm/kernel/fiq.c
+@@ -56,6 +56,8 @@
+ static unsigned long dfl_fiq_insn;
+ static struct pt_regs dfl_fiq_regs;
+ 
++extern int irq_activate(struct irq_desc *desc);
++
+ /* Default reacquire function
+  * - we always relinquish FIQ control
+  * - we always reacquire FIQ control
+@@ -140,6 +142,8 @@ static int fiq_start;
+ 
+ void enable_fiq(int fiq)
+ {
++	struct irq_desc *desc = irq_to_desc(fiq + fiq_start);
++	irq_activate(desc);
+ 	enable_irq(fiq + fiq_start);
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0096-i2c-gpio-Also-set-bus-numbers-from-reg-property.patch b/target/linux/bcm27xx/patches-5.15/950-0096-i2c-gpio-Also-set-bus-numbers-from-reg-property.patch
new file mode 100644
index 0000000000..cd1616fe85
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0096-i2c-gpio-Also-set-bus-numbers-from-reg-property.patch
@@ -0,0 +1,35 @@
+From 82b910794d378403d6a9a82487bf89ecc1fc13e1 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 20 Feb 2018 10:07:27 +0000
+Subject: [PATCH] i2c-gpio: Also set bus numbers from reg property
+
+I2C busses can be assigned specific bus numbers using aliases in
+Device Tree - string properties where the name is the alias and the
+value is the path to the node. The current DT parameter mechanism
+does not allow property names to be derived from a parameter value
+in any way, so it isn't possible to generate unique or matching
+aliases for nodes from an overlay that can generate multiple
+instances, e.g. i2c-gpio.
+
+Work around this limitation (at least temporarily) by allowing
+the i2c adapter number to be initialised from the "reg" property
+if present.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/i2c/busses/i2c-gpio.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/i2c/busses/i2c-gpio.c
++++ b/drivers/i2c/busses/i2c-gpio.c
+@@ -445,7 +445,9 @@ static int i2c_gpio_probe(struct platfor
+ 	adap->dev.parent = dev;
+ 	adap->dev.of_node = np;
+ 
+-	adap->nr = pdev->id;
++	if (pdev->id != PLATFORM_DEVID_NONE || !pdev->dev.of_node ||
++	    of_property_read_u32(pdev->dev.of_node, "reg", &adap->nr))
++		adap->nr = pdev->id;
+ 	ret = i2c_bit_add_numbered_bus(adap);
+ 	if (ret)
+ 		return ret;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0097-added-capture_clear-option-to-pps-gpio-via-dtoverlay.patch b/target/linux/bcm27xx/patches-5.15/950-0097-added-capture_clear-option-to-pps-gpio-via-dtoverlay.patch
new file mode 100644
index 0000000000..36521c84a0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0097-added-capture_clear-option-to-pps-gpio-via-dtoverlay.patch
@@ -0,0 +1,22 @@
+From 9ed2e6910f4be04aa4f30a991e4a53b986835cb2 Mon Sep 17 00:00:00 2001
+From: hdoverobinson <hdoverobinson@gmail.com>
+Date: Tue, 13 Mar 2018 06:58:39 -0400
+Subject: [PATCH] added capture_clear option to pps-gpio via dtoverlay
+ (#2433)
+
+---
+ drivers/pps/clients/pps-gpio.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/pps/clients/pps-gpio.c
++++ b/drivers/pps/clients/pps-gpio.c
+@@ -113,6 +113,9 @@ static int pps_gpio_setup(struct device
+ 	data->assert_falling_edge =
+ 		device_property_read_bool(dev, "assert-falling-edge");
+ 
++	data->capture_clear =
++		device_property_read_bool(dev, "capture-clear");
++
+ 	data->echo_pin = devm_gpiod_get_optional(dev, "echo", GPIOD_OUT_LOW);
+ 	if (IS_ERR(data->echo_pin))
+ 		return dev_err_probe(dev, PTR_ERR(data->echo_pin),
diff --git a/target/linux/bcm27xx/patches-5.15/950-0098-lan78xx-Read-initial-EEE-status-from-DT.patch b/target/linux/bcm27xx/patches-5.15/950-0098-lan78xx-Read-initial-EEE-status-from-DT.patch
new file mode 100644
index 0000000000..ea0001b745
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0098-lan78xx-Read-initial-EEE-status-from-DT.patch
@@ -0,0 +1,40 @@
+From b9c6cbcc647c0a228dee8c7919aefc22883751a3 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 9 Mar 2018 12:01:00 +0000
+Subject: [PATCH] lan78xx: Read initial EEE status from DT
+
+Add two new DT properties:
+* microchip,eee-enabled  - a boolean to enable EEE
+* microchip,tx-lpi-timer - time in microseconds to wait before entering
+                           low power state
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/usb/lan78xx.c | 16 ++++++++++++++++
+ 1 file changed, 16 insertions(+)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -2960,6 +2960,22 @@ static int lan78xx_open(struct net_devic
+ 
+ 	netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
+ 
++	if (of_property_read_bool(dev->udev->dev.of_node,
++				  "microchip,eee-enabled")) {
++		struct ethtool_eee edata;
++		memset(&edata, 0, sizeof(edata));
++		edata.cmd = ETHTOOL_SEEE;
++		edata.advertised = ADVERTISED_1000baseT_Full |
++				   ADVERTISED_100baseT_Full;
++		edata.eee_enabled = true;
++		edata.tx_lpi_enabled = true;
++		if (of_property_read_u32(dev->udev->dev.of_node,
++					 "microchip,tx-lpi-timer",
++					 &edata.tx_lpi_timer))
++			edata.tx_lpi_timer = 600; /* non-aggressive */
++		(void)lan78xx_set_eee(net, &edata);
++	}
++
+ 	/* for Link Check */
+ 	if (dev->urb_intr) {
+ 		ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0099-hid-Reduce-default-mouse-polling-interval-to-60Hz.patch b/target/linux/bcm27xx/patches-5.15/950-0099-hid-Reduce-default-mouse-polling-interval-to-60Hz.patch
new file mode 100644
index 0000000000..e054934f67
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0099-hid-Reduce-default-mouse-polling-interval-to-60Hz.patch
@@ -0,0 +1,32 @@
+From 27c93089b969005ae6af98d0ae482a680f7cb749 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Mon, 14 Jul 2014 22:02:09 +0100
+Subject: [PATCH] hid: Reduce default mouse polling interval to 60Hz
+
+Reduces overhead when using X
+---
+ drivers/hid/usbhid/hid-core.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/hid/usbhid/hid-core.c
++++ b/drivers/hid/usbhid/hid-core.c
+@@ -45,7 +45,7 @@
+  * Module parameters.
+  */
+ 
+-static unsigned int hid_mousepoll_interval;
++static unsigned int hid_mousepoll_interval = ~0;
+ module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
+ MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
+ 
+@@ -1112,7 +1112,9 @@ static int usbhid_start(struct hid_devic
+ 		 */
+ 		switch (hid->collection->usage) {
+ 		case HID_GD_MOUSE:
+-			if (hid_mousepoll_interval > 0)
++			if (hid_mousepoll_interval == ~0 && interval < 16)
++				interval = 16;
++			else if (hid_mousepoll_interval != ~0 && hid_mousepoll_interval != 0)
+ 				interval = hid_mousepoll_interval;
+ 			break;
+ 		case HID_GD_JOYSTICK:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0100-Add-ability-to-export-gpio-used-by-gpio-poweroff.patch b/target/linux/bcm27xx/patches-5.15/950-0100-Add-ability-to-export-gpio-used-by-gpio-poweroff.patch
new file mode 100644
index 0000000000..7b438f8f40
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0100-Add-ability-to-export-gpio-used-by-gpio-poweroff.patch
@@ -0,0 +1,57 @@
+From 03a2b2dc2c01a00838b83b6843c086230847239f Mon Sep 17 00:00:00 2001
+From: Nick Bulleid <nedbulleid@fastmail.com>
+Date: Thu, 10 May 2018 21:57:02 +0100
+Subject: [PATCH] Add ability to export gpio used by gpio-poweroff
+
+Signed-off-by: Nick Bulleid <nedbulleid@fastmail.com>
+
+Added export feature to gpio-poweroff documentation
+
+Signed-off-by: Nick Bulleid <nedbulleid@fastmail.com>
+---
+ .../devicetree/bindings/power/reset/gpio-poweroff.txt    | 1 +
+ drivers/power/reset/gpio-poweroff.c                      | 9 +++++++++
+ 2 files changed, 10 insertions(+)
+
+--- a/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt
++++ b/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt
+@@ -31,6 +31,7 @@ Optional properties:
+ - inactive-delay-ms: Delay (default 100) to wait after driving gpio inactive
+ - timeout-ms: Time to wait before asserting a WARN_ON(1). If nothing is
+               specified, 3000 ms is used.
++- export : Export the GPIO line to the sysfs system
+ 
+ Examples:
+ 
+--- a/drivers/power/reset/gpio-poweroff.c
++++ b/drivers/power/reset/gpio-poweroff.c
+@@ -51,6 +51,7 @@ static int gpio_poweroff_probe(struct pl
+ 	bool input = false;
+ 	enum gpiod_flags flags;
+ 	bool force = false;
++	bool export = false;
+ 
+ 	/* If a pm_power_off function has already been added, leave it alone */
+ 	force = of_property_read_bool(pdev->dev.of_node, "force");
+@@ -76,6 +77,12 @@ static int gpio_poweroff_probe(struct pl
+ 	if (IS_ERR(reset_gpio))
+ 		return PTR_ERR(reset_gpio);
+ 
++	export = of_property_read_bool(pdev->dev.of_node, "export");
++	if (export) {
++		gpiod_export(reset_gpio, false);
++		gpiod_export_link(&pdev->dev, "poweroff-gpio", reset_gpio);
++	}
++
+ 	pm_power_off = &gpio_poweroff_do_poweroff;
+ 	return 0;
+ }
+@@ -85,6 +92,8 @@ static int gpio_poweroff_remove(struct p
+ 	if (pm_power_off == &gpio_poweroff_do_poweroff)
+ 		pm_power_off = NULL;
+ 
++	gpiod_unexport(reset_gpio);
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0101-firmware-raspberrypi-Notify-firmware-of-a-reboot.patch b/target/linux/bcm27xx/patches-5.15/950-0101-firmware-raspberrypi-Notify-firmware-of-a-reboot.patch
new file mode 100644
index 0000000000..9f5efed269
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0101-firmware-raspberrypi-Notify-firmware-of-a-reboot.patch
@@ -0,0 +1,84 @@
+From 3b1653188f0b0832290dffe6b472d71b546231e1 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Sat, 12 May 2018 21:35:43 +0100
+Subject: [PATCH] firmware/raspberrypi: Notify firmware of a reboot
+
+Register for reboot notifications, sending RPI_FIRMWARE_NOTIFY_REBOOT
+over the mailbox interface on reception.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/firmware/raspberrypi.c | 40 +++++++++++++++++++++++++++++++++-
+ 1 file changed, 39 insertions(+), 1 deletion(-)
+
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -12,6 +12,7 @@
+ #include <linux/module.h>
+ #include <linux/of_platform.h>
+ #include <linux/platform_device.h>
++#include <linux/reboot.h>
+ #include <linux/slab.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+@@ -179,6 +180,26 @@ int rpi_firmware_property(struct rpi_fir
+ }
+ EXPORT_SYMBOL_GPL(rpi_firmware_property);
+ 
++static int rpi_firmware_notify_reboot(struct notifier_block *nb,
++				      unsigned long action,
++				      void *data)
++{
++	struct rpi_firmware *fw;
++	struct platform_device *pdev = g_pdev;
++
++	if (!pdev)
++		return 0;
++
++	fw = platform_get_drvdata(pdev);
++	if (!fw)
++		return 0;
++
++	(void)rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_REBOOT,
++				    0, 0);
++
++	return 0;
++}
++
+ static void
+ rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
+ {
+@@ -386,15 +407,32 @@ static struct platform_driver rpi_firmwa
+ 	.remove		= rpi_firmware_remove,
+ };
+ 
++static struct notifier_block rpi_firmware_reboot_notifier = {
++	.notifier_call = rpi_firmware_notify_reboot,
++};
++
+ static int __init rpi_firmware_init(void)
+ {
+-	return platform_driver_register(&rpi_firmware_driver);
++	int ret = register_reboot_notifier(&rpi_firmware_reboot_notifier);
++	if (ret)
++		goto out1;
++	ret = platform_driver_register(&rpi_firmware_driver);
++	if (ret)
++		goto out2;
++
++	return 0;
++
++out2:
++	unregister_reboot_notifier(&rpi_firmware_reboot_notifier);
++out1:
++	return ret;
+ }
+ subsys_initcall(rpi_firmware_init);
+ 
+ static void __init rpi_firmware_exit(void)
+ {
+ 	platform_driver_unregister(&rpi_firmware_driver);
++	unregister_reboot_notifier(&rpi_firmware_reboot_notifier);
+ }
+ module_exit(rpi_firmware_exit);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0102-irqchip-irq-bcm2835-Calc.-FIQ_START-at-boot-time.patch b/target/linux/bcm27xx/patches-5.15/950-0102-irqchip-irq-bcm2835-Calc.-FIQ_START-at-boot-time.patch
new file mode 100644
index 0000000000..08de1275fb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0102-irqchip-irq-bcm2835-Calc.-FIQ_START-at-boot-time.patch
@@ -0,0 +1,66 @@
+From a30171a210cdb8a79cf766d720e4e4b01bef5da6 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 14 Jun 2018 11:21:04 +0100
+Subject: [PATCH] irqchip: irq-bcm2835: Calc. FIQ_START at boot-time
+
+ad83c7cb2f37 ("irqchip/irq-bcm2836: Add support for DT interrupt polarity")
+changed the way that the BCM2836/7 local interrupts are mapped; instead
+of being pre-mapped they are now mapped on-demand. A side effect of this
+change is that the call to irq_of_parse_and_map from armctrl_of_init
+creates a new mapping, forming a gap between the IRQs and the FIQs. This
+ gap breaks the FIQ<->IRQ mapping which up to now has been done by assuming:
+
+1) that the value of FIQ_START is the same as the number of normal IRQs
+that will be mapped (still true), and
+
+2) that this value is also the offset between an IRQ and its equivalent
+FIQ (which is no longer the case).
+
+Remove both assumptions by measuring the interval between the last IRQ
+and the last FIQ, passing it as the parameter to init_FIQ().
+
+Fixes: https://github.com/raspberrypi/linux/issues/2432
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/irqchip/irq-bcm2835.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/irqchip/irq-bcm2835.c
++++ b/drivers/irqchip/irq-bcm2835.c
+@@ -74,8 +74,6 @@
+ #define NR_BANKS		3
+ #define IRQS_PER_BANK		32
+ #define NUMBER_IRQS		MAKE_HWIRQ(NR_BANKS, 0)
+-#undef FIQ_START
+-#define FIQ_START		(NR_IRQS_BANK0 + MAKE_HWIRQ(NR_BANKS - 1, 0))
+ 
+ static const int reg_pending[] __initconst = { 0x00, 0x04, 0x08 };
+ static const int reg_enable[] __initconst = { 0x18, 0x10, 0x14 };
+@@ -203,7 +201,7 @@ static int __init armctrl_of_init(struct
+ 				  bool is_2836)
+ {
+ 	void __iomem *base;
+-	int irq, b, i;
++	int irq = 0, last_irq, b, i;
+ 	u32 reg;
+ 
+ 	base = of_iomap(node, 0);
+@@ -243,6 +241,8 @@ static int __init armctrl_of_init(struct
+ 		pr_err(FW_BUG "Bootloader left fiq enabled\n");
+ 	}
+ 
++	last_irq = irq;
++
+ 	if (is_2836) {
+ 		int parent_irq = irq_of_parse_and_map(node, 0);
+ 
+@@ -273,7 +273,7 @@ static int __init armctrl_of_init(struct
+ 		}
+ 	}
+ #ifndef CONFIG_ARM64
+-	init_FIQ(FIQ_START);
++	init_FIQ(irq - last_irq);
+ #endif
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0103-of-configfs-Use-of_overlay_fdt_apply-API-call.patch b/target/linux/bcm27xx/patches-5.15/950-0103-of-configfs-Use-of_overlay_fdt_apply-API-call.patch
new file mode 100644
index 0000000000..c0858adf98
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0103-of-configfs-Use-of_overlay_fdt_apply-API-call.patch
@@ -0,0 +1,114 @@
+From bf71202ee22c77b2dd594d56a411dec94a0f7436 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 14 Jun 2018 15:07:26 +0100
+Subject: [PATCH] of: configfs: Use of_overlay_fdt_apply API call
+
+The published API to the dynamic overlay application mechanism now
+takes a Flattened Device Tree blob as input so that it can manage the
+lifetime of the unflattened tree. Conveniently, the new API call -
+of_overlay_fdt_apply - is virtually a drop-in replacement for
+create_overlay, which can now be deleted.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/of/configfs.c | 47 +++++++------------------------------------
+ 1 file changed, 7 insertions(+), 40 deletions(-)
+
+--- a/drivers/of/configfs.c
++++ b/drivers/of/configfs.c
+@@ -40,41 +40,6 @@ struct cfs_overlay_item {
+ 	int			dtbo_size;
+ };
+ 
+-static int create_overlay(struct cfs_overlay_item *overlay, void *blob)
+-{
+-	int err;
+-
+-	/* unflatten the tree */
+-	of_fdt_unflatten_tree(blob, NULL, &overlay->overlay);
+-	if (overlay->overlay == NULL) {
+-		pr_err("%s: failed to unflatten tree\n", __func__);
+-		err = -EINVAL;
+-		goto out_err;
+-	}
+-	pr_debug("%s: unflattened OK\n", __func__);
+-
+-	/* mark it as detached */
+-	of_node_set_flag(overlay->overlay, OF_DETACHED);
+-
+-	/* perform resolution */
+-	err = of_resolve_phandles(overlay->overlay);
+-	if (err != 0) {
+-		pr_err("%s: Failed to resolve tree\n", __func__);
+-		goto out_err;
+-	}
+-	pr_debug("%s: resolved OK\n", __func__);
+-
+-	err = of_overlay_apply(overlay->overlay, &overlay->ov_id);
+-	if (err < 0) {
+-		pr_err("%s: Failed to create overlay (err=%d)\n",
+-				__func__, err);
+-		goto out_err;
+-	}
+-
+-out_err:
+-	return err;
+-}
+-
+ static inline struct cfs_overlay_item *to_cfs_overlay_item(
+ 		struct config_item *item)
+ {
+@@ -115,7 +80,8 @@ static ssize_t cfs_overlay_item_path_sto
+ 	if (err != 0)
+ 		goto out_err;
+ 
+-	err = create_overlay(overlay, (void *)overlay->fw->data);
++	err = of_overlay_fdt_apply((void *)overlay->fw->data,
++				   (u32)overlay->fw->size, &overlay->ov_id);
+ 	if (err != 0)
+ 		goto out_err;
+ 
+@@ -136,7 +102,7 @@ static ssize_t cfs_overlay_item_status_s
+ 	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+ 
+ 	return sprintf(page, "%s\n",
+-			overlay->ov_id >= 0 ? "applied" : "unapplied");
++			overlay->ov_id > 0 ? "applied" : "unapplied");
+ }
+ 
+ CONFIGFS_ATTR(cfs_overlay_item_, path);
+@@ -188,7 +154,8 @@ ssize_t cfs_overlay_item_dtbo_write(stru
+ 
+ 	overlay->dtbo_size = count;
+ 
+-	err = create_overlay(overlay, overlay->dtbo);
++	err = of_overlay_fdt_apply(overlay->dtbo, overlay->dtbo_size,
++				   &overlay->ov_id);
+ 	if (err != 0)
+ 		goto out_err;
+ 
+@@ -198,6 +165,7 @@ out_err:
+ 	kfree(overlay->dtbo);
+ 	overlay->dtbo = NULL;
+ 	overlay->dtbo_size = 0;
++	overlay->ov_id = 0;
+ 
+ 	return err;
+ }
+@@ -213,7 +181,7 @@ static void cfs_overlay_release(struct c
+ {
+ 	struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+ 
+-	if (overlay->ov_id >= 0)
++	if (overlay->ov_id > 0)
+ 		of_overlay_remove(&overlay->ov_id);
+ 	if (overlay->fw)
+ 		release_firmware(overlay->fw);
+@@ -241,7 +209,6 @@ static struct config_item *cfs_overlay_g
+ 	overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
+ 	if (!overlay)
+ 		return ERR_PTR(-ENOMEM);
+-	overlay->ov_id = -1;
+ 
+ 	config_item_init_type_name(&overlay->item, name, &cfs_overlay_type);
+ 	return &overlay->item;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0104-net-lan78xx-Disable-TCP-Segmentation-Offload-TSO.patch b/target/linux/bcm27xx/patches-5.15/950-0104-net-lan78xx-Disable-TCP-Segmentation-Offload-TSO.patch
new file mode 100644
index 0000000000..e716abb71e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0104-net-lan78xx-Disable-TCP-Segmentation-Offload-TSO.patch
@@ -0,0 +1,56 @@
+From 266836133cde4a88c7cc5b39b3e18355ae9b1b3d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 13 Jun 2018 15:21:10 +0100
+Subject: [PATCH] net: lan78xx: Disable TCP Segmentation Offload (TSO)
+
+TSO seems to be having issues when packets are dropped and the
+remote end uses Selective Acknowledge (SACK) to denote that
+data is missing. The missing data is never resent, so the
+connection eventually stalls.
+
+There is a module parameter of enable_tso added to allow
+further debugging without forcing a rebuild of the kernel.
+
+https://github.com/raspberrypi/linux/issues/2449
+https://github.com/raspberrypi/linux/issues/2482
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/net/usb/lan78xx.c | 19 +++++++++++++++++--
+ 1 file changed, 17 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -445,6 +445,15 @@ static int msg_level = -1;
+ module_param(msg_level, int, 0);
+ MODULE_PARM_DESC(msg_level, "Override default message level");
+ 
++/* TSO seems to be having some issue with Selective Acknowledge (SACK) that
++ * results in lost data never being retransmitted.
++ * Disable it by default now, but adds a module parameter to enable it for
++ * debug purposes (the full cause is not currently understood).
++ */
++static bool enable_tso;
++module_param(enable_tso, bool, 0644);
++MODULE_PARM_DESC(enable_tso, "Enables TCP segmentation offload");
++
+ static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
+ {
+ 	u32 *buf;
+@@ -3288,8 +3297,14 @@ static int lan78xx_bind(struct lan78xx_n
+ 	if (DEFAULT_RX_CSUM_ENABLE)
+ 		dev->net->features |= NETIF_F_RXCSUM;
+ 
+-	if (DEFAULT_TSO_CSUM_ENABLE)
+-		dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
++	if (DEFAULT_TSO_CSUM_ENABLE) {
++		dev->net->features |= NETIF_F_SG;
++		/* Use module parameter to control TCP segmentation offload as
++		 * it appears to cause issues.
++		 */
++		if (enable_tso)
++			dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6;
++	}
+ 
+ 	if (DEFAULT_VLAN_RX_OFFLOAD)
+ 		dev->net->features |= NETIF_F_HW_VLAN_CTAG_RX;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0105-lan78xx-Move-enabling-of-EEE-into-PHY-init-code.patch b/target/linux/bcm27xx/patches-5.15/950-0105-lan78xx-Move-enabling-of-EEE-into-PHY-init-code.patch
new file mode 100644
index 0000000000..5f0221e9f8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0105-lan78xx-Move-enabling-of-EEE-into-PHY-init-code.patch
@@ -0,0 +1,64 @@
+From 76dd9d2f2f32dd5bb720ba6a2a9904ce361d059f Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 5 Apr 2018 14:46:11 +0100
+Subject: [PATCH] lan78xx: Move enabling of EEE into PHY init code
+
+Enable EEE mode as soon as possible after connecting to the PHY, and
+before phy_start. This avoids a second link negotiation, which speeds
+up booting and stops the interface failing to become ready.
+
+See: https://github.com/raspberrypi/linux/issues/2437
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/usb/lan78xx.c | 32 ++++++++++++++++----------------
+ 1 file changed, 16 insertions(+), 16 deletions(-)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -2277,6 +2277,22 @@ static int lan78xx_phy_init(struct lan78
+ 	mii_adv_to_linkmode_adv_t(fc, mii_adv);
+ 	linkmode_or(phydev->advertising, fc, phydev->advertising);
+ 
++	if (of_property_read_bool(dev->udev->dev.of_node,
++				  "microchip,eee-enabled")) {
++		struct ethtool_eee edata;
++		memset(&edata, 0, sizeof(edata));
++		edata.cmd = ETHTOOL_SEEE;
++		edata.advertised = ADVERTISED_1000baseT_Full |
++				   ADVERTISED_100baseT_Full;
++		edata.eee_enabled = true;
++		edata.tx_lpi_enabled = true;
++		if (of_property_read_u32(dev->udev->dev.of_node,
++					 "microchip,tx-lpi-timer",
++					 &edata.tx_lpi_timer))
++			edata.tx_lpi_timer = 600; /* non-aggressive */
++		(void)lan78xx_set_eee(dev->net, &edata);
++	}
++
+ 	if (phydev->mdio.dev.of_node) {
+ 		u32 reg;
+ 		int len;
+@@ -2969,22 +2985,6 @@ static int lan78xx_open(struct net_devic
+ 
+ 	netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
+ 
+-	if (of_property_read_bool(dev->udev->dev.of_node,
+-				  "microchip,eee-enabled")) {
+-		struct ethtool_eee edata;
+-		memset(&edata, 0, sizeof(edata));
+-		edata.cmd = ETHTOOL_SEEE;
+-		edata.advertised = ADVERTISED_1000baseT_Full |
+-				   ADVERTISED_100baseT_Full;
+-		edata.eee_enabled = true;
+-		edata.tx_lpi_enabled = true;
+-		if (of_property_read_u32(dev->udev->dev.of_node,
+-					 "microchip,tx-lpi-timer",
+-					 &edata.tx_lpi_timer))
+-			edata.tx_lpi_timer = 600; /* non-aggressive */
+-		(void)lan78xx_set_eee(net, &edata);
+-	}
+-
+ 	/* for Link Check */
+ 	if (dev->urb_intr) {
+ 		ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0106-cxd2880-CXD2880_SPI_DRV-should-select-DVB_CXD2880-wi.patch b/target/linux/bcm27xx/patches-5.15/950-0106-cxd2880-CXD2880_SPI_DRV-should-select-DVB_CXD2880-wi.patch
new file mode 100644
index 0000000000..d75074191b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0106-cxd2880-CXD2880_SPI_DRV-should-select-DVB_CXD2880-wi.patch
@@ -0,0 +1,20 @@
+From 3aa0b266280659ad55100d4c5275471e1a02d22a Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Mon, 17 Sep 2018 17:31:18 +0100
+Subject: [PATCH] cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880
+ with MEDIA_SUBDRV_AUTOSELECT
+
+---
+ drivers/media/spi/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/media/spi/Kconfig
++++ b/drivers/media/spi/Kconfig
+@@ -25,6 +25,7 @@ menu "Media SPI Adapters"
+ config CXD2880_SPI_DRV
+ 	tristate "Sony CXD2880 SPI support"
+ 	depends on DVB_CORE && SPI
++	select DVB_CXD2880 if MEDIA_SUBDRV_AUTOSELECT
+ 	default m if !MEDIA_SUBDRV_AUTOSELECT
+ 	help
+ 	  Choose if you would like to have SPI interface support for Sony CXD2880.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0107-firmware-raspberrypi-Add-backward-compatible-get_thr.patch b/target/linux/bcm27xx/patches-5.15/950-0107-firmware-raspberrypi-Add-backward-compatible-get_thr.patch
new file mode 100644
index 0000000000..31040c1706
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0107-firmware-raspberrypi-Add-backward-compatible-get_thr.patch
@@ -0,0 +1,79 @@
+From 7ef1e33a193b3942ebde1e55de25f694ccceeed9 Mon Sep 17 00:00:00 2001
+From: Stefan Wahren <stefan.wahren@i2se.com>
+Date: Sat, 13 Oct 2018 13:31:21 +0200
+Subject: [PATCH] firmware: raspberrypi: Add backward compatible
+ get_throttled
+
+Avoid a hard userspace ABI change by adding a compatible get_throttled
+sysfs entry. Its value is now feed by the GET_THROTTLED requests of the
+new hwmon driver. The first access to get_throttled will generate
+a warning.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/firmware/raspberrypi.c | 33 +++++++++++++++++++++++++++++++++
+ 1 file changed, 33 insertions(+)
+
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -31,6 +31,7 @@ struct rpi_firmware {
+ 	u32 enabled;
+ 
+ 	struct kref consumers;
++	u32 get_throttled;
+ };
+ 
+ static struct platform_device *g_pdev;
+@@ -176,6 +177,12 @@ int rpi_firmware_property(struct rpi_fir
+ 
+ 	kfree(data);
+ 
++	if ((tag == RPI_FIRMWARE_GET_THROTTLED) &&
++	     memcmp(&fw->get_throttled, tag_data, sizeof(fw->get_throttled))) {
++		memcpy(&fw->get_throttled, tag_data, sizeof(fw->get_throttled));
++		sysfs_notify(&fw->cl.dev->kobj, NULL, "get_throttled");
++	}
++
+ 	return ret;
+ }
+ EXPORT_SYMBOL_GPL(rpi_firmware_property);
+@@ -200,6 +207,27 @@ static int rpi_firmware_notify_reboot(st
+ 	return 0;
+ }
+ 
++static ssize_t get_throttled_show(struct device *dev,
++				  struct device_attribute *attr, char *buf)
++{
++	struct rpi_firmware *fw = dev_get_drvdata(dev);
++
++	WARN_ONCE(1, "deprecated, use hwmon sysfs instead\n");
++
++	return sprintf(buf, "%x\n", fw->get_throttled);
++}
++
++static DEVICE_ATTR_RO(get_throttled);
++
++static struct attribute *rpi_firmware_dev_attrs[] = {
++	&dev_attr_get_throttled.attr,
++	NULL,
++};
++
++static const struct attribute_group rpi_firmware_dev_group = {
++	.attrs = rpi_firmware_dev_attrs,
++};
++
+ static void
+ rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
+ {
+@@ -229,6 +257,11 @@ rpi_register_hwmon_driver(struct device
+ 
+ 	rpi_hwmon = platform_device_register_data(dev, "raspberrypi-hwmon",
+ 						  -1, NULL, 0);
++
++	if (!IS_ERR_OR_NULL(rpi_hwmon)) {
++		if (devm_device_add_group(dev, &rpi_firmware_dev_group))
++			dev_err(dev, "Failed to create get_trottled attr\n");
++	}
+ }
+ 
+ static void rpi_register_clk_driver(struct device *dev)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0108-sc16is7xx-Don-t-spin-if-no-data-received.patch b/target/linux/bcm27xx/patches-5.15/950-0108-sc16is7xx-Don-t-spin-if-no-data-received.patch
new file mode 100644
index 0000000000..a7d7f211d4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0108-sc16is7xx-Don-t-spin-if-no-data-received.patch
@@ -0,0 +1,23 @@
+From c625bcbb6a4c45e29c7c2c0dec24831025051032 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 6 Nov 2018 12:57:48 +0000
+Subject: [PATCH] sc16is7xx: Don't spin if no data received
+
+See: https://github.com/raspberrypi/linux/issues/2676
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/tty/serial/sc16is7xx.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/tty/serial/sc16is7xx.c
++++ b/drivers/tty/serial/sc16is7xx.c
+@@ -696,6 +696,8 @@ static bool sc16is7xx_port_irq(struct sc
+ 			rxlen = sc16is7xx_port_read(port, SC16IS7XX_RXLVL_REG);
+ 			if (rxlen)
+ 				sc16is7xx_handle_rx(port, rxlen, iir);
++			else
++				return false;
+ 			break;
+ 		case SC16IS7XX_IIR_THRI_SRC:
+ 			sc16is7xx_handle_tx(port);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0109-drivers-thermal-step_wise-add-support-for-hysteresis.patch b/target/linux/bcm27xx/patches-5.15/950-0109-drivers-thermal-step_wise-add-support-for-hysteresis.patch
new file mode 100644
index 0000000000..dedb71992a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0109-drivers-thermal-step_wise-add-support-for-hysteresis.patch
@@ -0,0 +1,89 @@
+From 3989fb43951484788052cbf3b70658e117f027d3 Mon Sep 17 00:00:00 2001
+From: Ram Chandrasekar <rkumbako@codeaurora.org>
+Date: Mon, 7 May 2018 11:54:08 -0600
+Subject: [PATCH] drivers: thermal: step_wise: add support for
+ hysteresis
+
+Step wise governor increases the mitigation level when the temperature
+goes above a threshold and will decrease the mitigation when the
+temperature falls below the threshold. If it were a case, where the
+temperature hovers around a threshold, the mitigation will be applied
+and removed at every iteration. This reaction to the temperature is
+inefficient for performance.
+
+The use of hysteresis temperature could avoid this ping-pong of
+mitigation by relaxing the mitigation to happen only when the
+temperature goes below this lower hysteresis value.
+
+Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
+Signed-off-by: Lina Iyer <ilina@codeaurora.org>
+---
+ drivers/thermal/gov_step_wise.c | 34 ++++++++++++++++++++++++---------
+ 1 file changed, 25 insertions(+), 9 deletions(-)
+
+--- a/drivers/thermal/gov_step_wise.c
++++ b/drivers/thermal/gov_step_wise.c
+@@ -24,7 +24,7 @@
+  *       for this trip point
+  *    d. if the trend is THERMAL_TREND_DROP_FULL, use lower limit
+  *       for this trip point
+- * If the temperature is lower than a trip point,
++ * If the temperature is lower than a hysteresis temperature,
+  *    a. if the trend is THERMAL_TREND_RAISING, do nothing
+  *    b. if the trend is THERMAL_TREND_DROPPING, use lower cooling
+  *       state for this trip point, if the cooling state already
+@@ -115,7 +115,7 @@ static void update_passive_instance(stru
+ 
+ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
+ {
+-	int trip_temp;
++	int trip_temp, hyst_temp;
+ 	enum thermal_trip_type trip_type;
+ 	enum thermal_trend trend;
+ 	struct thermal_instance *instance;
+@@ -125,15 +125,19 @@ static void thermal_zone_trip_update(str
+ 	tz->ops->get_trip_temp(tz, trip, &trip_temp);
+ 	tz->ops->get_trip_type(tz, trip, &trip_type);
+ 
+-	trend = get_tz_trend(tz, trip);
+-
+-	if (tz->temperature >= trip_temp) {
+-		throttle = true;
+-		trace_thermal_zone_trip(tz, trip, trip_type);
++	tz->ops->get_trip_temp(tz, trip, &trip_temp);
++	hyst_temp = trip_temp;
++	if (tz->ops->get_trip_hyst) {
++		tz->ops->get_trip_hyst(tz, trip, &hyst_temp);
++		hyst_temp = trip_temp - hyst_temp;
+ 	}
++	tz->ops->get_trip_type(tz, trip, &trip_type);
+ 
+-	dev_dbg(&tz->device, "Trip%d[type=%d,temp=%d]:trend=%d,throttle=%d\n",
+-				trip, trip_type, trip_temp, trend, throttle);
++	trend = get_tz_trend(tz, trip);
++
++	dev_dbg(&tz->device,
++		"Trip%d[type=%d,temp=%d,hyst=%d]:trend=%d,throttle=%d\n",
++		trip, trip_type, trip_temp, hyst_temp, trend, throttle);
+ 
+ 	mutex_lock(&tz->lock);
+ 
+@@ -142,6 +146,18 @@ static void thermal_zone_trip_update(str
+ 			continue;
+ 
+ 		old_target = instance->target;
++		throttle = false;
++		/*
++		 * Lower the mitigation only if the temperature
++		 * goes below the hysteresis temperature.
++		 */
++		if (tz->temperature >= trip_temp ||
++		   (tz->temperature >= hyst_temp &&
++		   old_target != THERMAL_NO_TARGET)) {
++			throttle = true;
++			trace_thermal_zone_trip(tz, trip, trip_type);
++		}
++
+ 		instance->target = get_target_state(instance, trend, throttle);
+ 		dev_dbg(&instance->cdev->device, "old_target=%d, target=%d\n",
+ 					old_target, (int)instance->target);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0110-drivers-thermal-step_wise-avoid-throttling-at-hyster.patch b/target/linux/bcm27xx/patches-5.15/950-0110-drivers-thermal-step_wise-avoid-throttling-at-hyster.patch
new file mode 100644
index 0000000000..4a94ba71c9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0110-drivers-thermal-step_wise-avoid-throttling-at-hyster.patch
@@ -0,0 +1,22 @@
+From 190f73386e95c43f6a56710f7990a95972ae5448 Mon Sep 17 00:00:00 2001
+From: Serge Schneider <serge@raspberrypi.org>
+Date: Tue, 2 Oct 2018 11:14:15 +0100
+Subject: [PATCH] drivers: thermal: step_wise: avoid throttling at
+ hysteresis temperature after dropping below it
+
+Signed-off-by: Serge Schneider <serge@raspberrypi.org>
+---
+ drivers/thermal/gov_step_wise.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/thermal/gov_step_wise.c
++++ b/drivers/thermal/gov_step_wise.c
+@@ -153,7 +153,7 @@ static void thermal_zone_trip_update(str
+ 		 */
+ 		if (tz->temperature >= trip_temp ||
+ 		   (tz->temperature >= hyst_temp &&
+-		   old_target != THERMAL_NO_TARGET)) {
++		   old_target == instance->upper)) {
+ 			throttle = true;
+ 			trace_thermal_zone_trip(tz, trip, trip_type);
+ 		}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0111-Update-issue-templates-2736.patch b/target/linux/bcm27xx/patches-5.15/950-0111-Update-issue-templates-2736.patch
new file mode 100644
index 0000000000..5a5c04006b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0111-Update-issue-templates-2736.patch
@@ -0,0 +1,47 @@
+From d6fafd1bfe1388aee8e7294fb663d0054d77ea34 Mon Sep 17 00:00:00 2001
+From: James Hughes <JamesH65@users.noreply.github.com>
+Date: Fri, 2 Nov 2018 11:55:49 +0000
+Subject: [PATCH] Update issue templates (#2736)
+
+---
+ .github/ISSUE_TEMPLATE/bug_report.md | 34 ++++++++++++++++++++++++++++
+ 1 file changed, 34 insertions(+)
+ create mode 100644 .github/ISSUE_TEMPLATE/bug_report.md
+
+--- /dev/null
++++ b/.github/ISSUE_TEMPLATE/bug_report.md
+@@ -0,0 +1,34 @@
++---
++name: Bug report
++about: Create a report to help us fix your issue
++
++---
++
++**Is this the right place for my bug report?**
++This repository contains the Linux kernel used on the Raspberry Pi. If you believe that the issue you are seeing is kernel-related, this is the right place. If not, we have other repositories for the GPU firmware at [github.com/raspberrypi/firmware](https://github.com/raspberrypi/firmware) and Raspberry Pi userland applications at [github.com/raspberrypi/userland](https://github.com/raspberrypi/userland). If you have problems with the Raspbian distribution packages, report them in the [github.com/RPi-Distro/repo](https://github.com/RPi-Distro/repo). If you simply have a question, then [the Raspberry Pi forums](https://www.raspberrypi.org/forums) are the best place to ask it.
++
++**Describe the bug**
++Add a clear and concise description of what you think the bug is.
++
++**To reproduce**
++List the steps required to reproduce the issue.
++
++**Expected behaviour**
++Add a clear and concise description of what you expected to happen.
++
++**Actual behaviour**
++Add a clear and concise description of what actually happened.
++
++**System**
++ Copy and paste the results of the raspinfo command in to this section. Alternatively, copy and paste a pastebin link, or add answers to the following questions:
++
++* Which model of Raspberry Pi? e.g. Pi3B+, PiZeroW
++* Which OS and version (`cat /etc/rpi-issue`)?
++* Which firmware version (`vcgencmd version`)?
++* Which kernel version (`uname -a`)?
++
++**Logs**
++If applicable, add the relevant output from `dmesg` or similar.
++
++**Additional context**
++Add any other relevant context for the problem.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0112-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch b/target/linux/bcm27xx/patches-5.15/950-0112-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch
new file mode 100644
index 0000000000..94c92d27ad
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0112-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch
@@ -0,0 +1,91 @@
+From 9aeb9f0344f801872971b9c8f80fc2d8d820eece Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 26 Nov 2018 19:46:58 +0000
+Subject: [PATCH] net: lan78xx: Support auto-downshift to 100Mb/s
+
+Ethernet cables with faulty or missing pairs (specifically pairs C and
+D) allow auto-negotiation to 1000Mbs, but do not support the successful
+establishment of a link. Add a DT property, "microchip,downshift-after",
+to configure the number of auto-negotiation failures after which it
+falls back to 100Mbs. Valid values are 2, 3, 4, 5 and 0, where 0 means
+never downshift.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ .../bindings/net/microchip,lan78xx.txt        |  3 +++
+ drivers/net/phy/microchip.c                   | 27 +++++++++++++++++++
+ include/linux/microchipphy.h                  |  8 ++++++
+ 3 files changed, 38 insertions(+)
+
+--- a/Documentation/devicetree/bindings/net/microchip,lan78xx.txt
++++ b/Documentation/devicetree/bindings/net/microchip,lan78xx.txt
+@@ -14,6 +14,9 @@ Optional properties of the embedded PHY:
+ - microchip,led-modes: a 0..4 element vector, with each element configuring
+   the operating mode of an LED. Omitted LEDs are turned off. Allowed values
+   are defined in "include/dt-bindings/net/microchip-lan78xx.h".
++- microchip,downshift-after: sets the number of failed auto-negotiation
++  attempts after which the link is downgraded from 1000BASE-T. Should be one of
++  2, 3, 4, 5 or 0, where 0 means never downshift.
+ 
+ Example:
+ 
+--- a/drivers/net/phy/microchip.c
++++ b/drivers/net/phy/microchip.c
+@@ -233,6 +233,7 @@ static int lan88xx_probe(struct phy_devi
+ 	struct device *dev = &phydev->mdio.dev;
+ 	struct lan88xx_priv *priv;
+ 	u32 led_modes[4];
++	u32 downshift_after = 0;
+ 	int len;
+ 
+ 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+@@ -262,6 +263,32 @@ static int lan88xx_probe(struct phy_devi
+ 		return -EINVAL;
+ 	}
+ 
++	if (!of_property_read_u32(dev->of_node,
++				  "microchip,downshift-after",
++				  &downshift_after)) {
++		u32 mask = LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK;
++		u32 val= LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
++
++		switch (downshift_after) {
++		case 2:	val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2;
++			break;
++		case 3:	val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3;
++			break;
++		case 4:	val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4;
++			break;
++		case 5:	val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5;
++			break;
++		case 0: // Disable completely
++			mask = LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
++			val = 0;
++			break;
++		default:
++			return -EINVAL;
++		}
++		(void)phy_modify_paged(phydev, 1, LAN78XX_PHY_CTRL3,
++				       mask, val);
++	}
++
+ 	/* these values can be used to identify internal PHY */
+ 	priv->chip_id = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_ID);
+ 	priv->chip_rev = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_REV);
+--- a/include/linux/microchipphy.h
++++ b/include/linux/microchipphy.h
+@@ -61,6 +61,14 @@
+ /* Registers specific to the LAN7800/LAN7850 embedded phy */
+ #define LAN78XX_PHY_LED_MODE_SELECT		(0x1D)
+ 
++#define LAN78XX_PHY_CTRL3			(0x14)
++#define LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT	(0x0010)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK	(0x000c)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2	(0x0000)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3	(0x0004)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4	(0x0008)
++#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5	(0x000c)
++
+ /* DSP registers */
+ #define PHY_ARDENNES_MMD_DEV_3_PHY_CFG		(0x806A)
+ #define PHY_ARDENNES_MMD_DEV_3_PHY_CFG_ZD_DLY_EN_	(0x2000)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0113-firmware-raspberrypi-Report-the-fw-variant-during-pr.patch b/target/linux/bcm27xx/patches-5.15/950-0113-firmware-raspberrypi-Report-the-fw-variant-during-pr.patch
new file mode 100644
index 0000000000..6f042f9dd4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0113-firmware-raspberrypi-Report-the-fw-variant-during-pr.patch
@@ -0,0 +1,101 @@
+From abf72c0831a77e965e65088ebc992b6b5460bd2f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Thu, 10 Jan 2019 17:58:06 +0000
+Subject: [PATCH] firmware: raspberrypi: Report the fw variant during
+ probe
+
+The driver already reported the firmware build date during probe.
+The mailbox calls have been extended to also report the variant
+ 1 = standard start.elf
+ 2 = start_x.elf (includes camera stack)
+ 3 = start_db.elf (includes assert logging)
+ 4 = start_cd.elf (cutdown version for smallest memory footprint).
+Log the variant during probe.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+
+firmware: raspberrypi: Report the fw git hash during probe
+
+The firmware can now report the git hash from which it was built
+via the mailbox, so report it during probe.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/firmware/raspberrypi.c             | 40 +++++++++++++++++++++-
+ include/soc/bcm2835/raspberrypi-firmware.h |  2 ++
+ 2 files changed, 41 insertions(+), 1 deletion(-)
+
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -233,6 +233,15 @@ rpi_firmware_print_firmware_revision(str
+ {
+ 	time64_t date_and_time;
+ 	u32 packet;
++	static const char * const variant_strs[] = {
++		"unknown",
++		"start",
++		"start_x",
++		"start_db",
++		"start_cd",
++	};
++	const char *variant_str = "cmd unsupported";
++	u32 variant;
+ 	int ret = rpi_firmware_property(fw,
+ 					RPI_FIRMWARE_GET_FIRMWARE_REVISION,
+ 					&packet, sizeof(packet));
+@@ -242,7 +251,35 @@ rpi_firmware_print_firmware_revision(str
+ 
+ 	/* This is not compatible with y2038 */
+ 	date_and_time = packet;
+-	dev_info(fw->cl.dev, "Attached to firmware from %ptT\n", &date_and_time);
++
++	ret = rpi_firmware_property(fw, RPI_FIRMWARE_GET_FIRMWARE_VARIANT,
++				    &variant, sizeof(variant));
++
++	if (!ret) {
++		if (variant >= ARRAY_SIZE(variant_strs))
++			variant = 0;
++		variant_str = variant_strs[variant];
++	}
++
++	dev_info(fw->cl.dev,
++		 "Attached to firmware from %ptT, variant %s\n",
++		 &date_and_time, variant_str);
++}
++
++static void
++rpi_firmware_print_firmware_hash(struct rpi_firmware *fw)
++{
++	u32 hash[5];
++	int ret = rpi_firmware_property(fw,
++					RPI_FIRMWARE_GET_FIRMWARE_HASH,
++					hash, sizeof(hash));
++
++	if (ret)
++		return;
++
++	dev_info(fw->cl.dev,
++		 "Firmware hash is %08x%08x%08x%08x%08x\n",
++		 hash[0], hash[1], hash[2], hash[3], hash[4]);
+ }
+ 
+ static void
+@@ -338,6 +375,7 @@ static int rpi_firmware_probe(struct pla
+ 	g_pdev = pdev;
+ 
+ 	rpi_firmware_print_firmware_revision(fw);
++	rpi_firmware_print_firmware_hash(fw);
+ 	rpi_register_hwmon_driver(dev, fw);
+ 	rpi_register_clk_driver(dev);
+ 
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -36,6 +36,8 @@ struct rpi_firmware_property_tag_header
+ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_PROPERTY_END =                           0,
+ 	RPI_FIRMWARE_GET_FIRMWARE_REVISION =                  0x00000001,
++	RPI_FIRMWARE_GET_FIRMWARE_VARIANT =                   0x00000002,
++	RPI_FIRMWARE_GET_FIRMWARE_HASH =                      0x00000003,
+ 
+ 	RPI_FIRMWARE_SET_CURSOR_INFO =                        0x00008010,
+ 	RPI_FIRMWARE_SET_CURSOR_STATE =                       0x00008011,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0114-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch b/target/linux/bcm27xx/patches-5.15/950-0114-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch
new file mode 100644
index 0000000000..bfe1c991bc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0114-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch
@@ -0,0 +1,45 @@
+From 65b91d9a2af917b88d5381cd6a3d7bc92723c0f6 Mon Sep 17 00:00:00 2001
+From: Joshua Emele <jemele@acm.org>
+Date: Wed, 7 Nov 2018 16:07:40 -0800
+Subject: [PATCH] lan78xx: Debounce link events to minimize poll storm
+
+The bInterval is set to 4 (i.e. 8 microframes => 1ms) and the only bit
+that the driver pays attention to is "link was reset". If there's a
+flapping status bit in that endpoint data, (such as if PHY negotiation
+needs a few tries to get a stable link) then polling at a slower rate
+would act as a de-bounce.
+
+See: https://github.com/raspberrypi/linux/issues/2447
+---
+ drivers/net/usb/lan78xx.c | 13 ++++++++++++-
+ 1 file changed, 12 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -454,6 +454,11 @@ static bool enable_tso;
+ module_param(enable_tso, bool, 0644);
+ MODULE_PARM_DESC(enable_tso, "Enables TCP segmentation offload");
+ 
++#define INT_URB_MICROFRAMES_PER_MS	8
++static int int_urb_interval_ms = 8;
++module_param(int_urb_interval_ms, int, 0);
++MODULE_PARM_DESC(int_urb_interval_ms, "Override usb interrupt urb interval");
++
+ static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
+ {
+ 	u32 *buf;
+@@ -4148,7 +4153,13 @@ static int lan78xx_probe(struct usb_inte
+ 	netdev->max_mtu = MAX_SINGLE_PACKET_SIZE;
+ 	netif_set_gso_max_size(netdev, MAX_SINGLE_PACKET_SIZE - MAX_HEADER);
+ 
+-	period = ep_intr->desc.bInterval;
++	if (int_urb_interval_ms <= 0)
++		period = ep_intr->desc.bInterval;
++	else
++		period = int_urb_interval_ms * INT_URB_MICROFRAMES_PER_MS;
++
++	netif_notice(dev, probe, netdev, "int urb period %d\n", period);
++
+ 	maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
+ 	buf = kmalloc(maxp, GFP_KERNEL);
+ 	if (buf) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0115-lan78xx-EEE-support-is-now-a-PHY-property.patch b/target/linux/bcm27xx/patches-5.15/950-0115-lan78xx-EEE-support-is-now-a-PHY-property.patch
new file mode 100644
index 0000000000..d62b6df5fb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0115-lan78xx-EEE-support-is-now-a-PHY-property.patch
@@ -0,0 +1,26 @@
+From a8c8f6c9531d00967e0205739d3aab0a643ce538 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 5 Mar 2019 09:51:22 +0000
+Subject: [PATCH] lan78xx: EEE support is now a PHY property
+
+Now that EEE support is a property of the PHY, use the PHY's DT node
+when querying the EEE-related properties.
+
+See: https://github.com/raspberrypi/linux/issues/2882
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/usb/lan78xx.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -2282,7 +2282,7 @@ static int lan78xx_phy_init(struct lan78
+ 	mii_adv_to_linkmode_adv_t(fc, mii_adv);
+ 	linkmode_or(phydev->advertising, fc, phydev->advertising);
+ 
+-	if (of_property_read_bool(dev->udev->dev.of_node,
++	if (of_property_read_bool(phydev->mdio.dev.of_node,
+ 				  "microchip,eee-enabled")) {
+ 		struct ethtool_eee edata;
+ 		memset(&edata, 0, sizeof(edata));
diff --git a/target/linux/bcm27xx/patches-5.15/950-0116-bcm2835-dma-Add-support-for-per-channel-flags.patch b/target/linux/bcm27xx/patches-5.15/950-0116-bcm2835-dma-Add-support-for-per-channel-flags.patch
new file mode 100644
index 0000000000..ba76eaad5e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0116-bcm2835-dma-Add-support-for-per-channel-flags.patch
@@ -0,0 +1,48 @@
+From 1520e1b2af8df4f9da28736adf2e29a0af7f9e00 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 20 Jul 2018 22:03:41 +0100
+Subject: [PATCH] bcm2835-dma: Add support for per-channel flags
+
+Add the ability to interpret the high bits of the dreq specifier as
+flags to be included in the DMA_CS register. The motivation for this
+change is the ability to set the DISDEBUG flag for SD card transfers
+to avoid corruption when using the VPU debugger.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/dma/bcm2835-dma.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -139,6 +139,10 @@ struct bcm2835_desc {
+ #define BCM2835_DMA_S_DREQ	BIT(10) /* enable SREQ for source */
+ #define BCM2835_DMA_S_IGNORE	BIT(11) /* ignore source reads - read 0 */
+ #define BCM2835_DMA_BURST_LENGTH(x) ((x & 15) << 12)
++#define BCM2835_DMA_CS_FLAGS(x) (x & (BCM2835_DMA_PRIORITY(15) | \
++				      BCM2835_DMA_PANIC_PRIORITY(15) | \
++				      BCM2835_DMA_WAIT_FOR_WRITES | \
++				      BCM2835_DMA_DIS_DEBUG))
+ #define BCM2835_DMA_PER_MAP(x)	((x & 31) << 16) /* REQ source */
+ #define BCM2835_DMA_WAIT(x)	((x & 31) << 21) /* add DMA-wait cycles */
+ #define BCM2835_DMA_NO_WIDE_BURSTS BIT(26) /* no 2 beat write bursts */
+@@ -452,7 +456,8 @@ static void bcm2835_dma_start_desc(struc
+ 	c->desc = d = to_bcm2835_dma_desc(&vd->tx);
+ 
+ 	writel(d->cb_list[0].paddr, c->chan_base + BCM2835_DMA_ADDR);
+-	writel(BCM2835_DMA_ACTIVE, c->chan_base + BCM2835_DMA_CS);
++	writel(BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq),
++	       c->chan_base + BCM2835_DMA_CS);
+ }
+ 
+ static irqreturn_t bcm2835_dma_callback(int irq, void *data)
+@@ -479,7 +484,8 @@ static irqreturn_t bcm2835_dma_callback(
+ 	 * if this IRQ handler is threaded.) If the channel is finished, it
+ 	 * will remain idle despite the ACTIVE flag being set.
+ 	 */
+-	writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE,
++	writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE |
++	       BCM2835_DMA_CS_FLAGS(c->dreq),
+ 	       c->chan_base + BCM2835_DMA_CS);
+ 
+ 	d = c->desc;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0117-rtc-rv3028-Add-backup-switchover-mode-support.patch b/target/linux/bcm27xx/patches-5.15/950-0117-rtc-rv3028-Add-backup-switchover-mode-support.patch
new file mode 100644
index 0000000000..bf62a3319f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0117-rtc-rv3028-Add-backup-switchover-mode-support.patch
@@ -0,0 +1,50 @@
+From aaf2a1e8450ce447683d3a7daec5644e72252db8 Mon Sep 17 00:00:00 2001
+From: Phil Howard <phil@gadgetoid.com>
+Date: Fri, 29 Mar 2019 10:53:14 +0000
+Subject: [PATCH] rtc: rv3028: Add backup switchover mode support
+
+Signed-off-by: Phil Howard <phil@pimoroni.com>
+---
+ drivers/rtc/rtc-rv3028.c | 17 +++++++++++++++++
+ 1 file changed, 17 insertions(+)
+
+--- a/drivers/rtc/rtc-rv3028.c
++++ b/drivers/rtc/rtc-rv3028.c
+@@ -80,6 +80,7 @@
+ 
+ #define RV3028_BACKUP_TCE		BIT(5)
+ #define RV3028_BACKUP_TCR_MASK		GENMASK(1,0)
++#define RV3028_BACKUP_BSM_MASK		0x0C
+ 
+ #define OFFSET_STEP_PPT			953674
+ 
+@@ -789,6 +790,7 @@ static int rv3028_probe(struct i2c_clien
+ 	struct rv3028_data *rv3028;
+ 	int ret, status;
+ 	u32 ohms;
++	u8 bsm;
+ 	struct nvmem_config nvmem_cfg = {
+ 		.name = "rv3028_nvram",
+ 		.word_size = 1,
+@@ -855,6 +857,21 @@ static int rv3028_probe(struct i2c_clien
+ 	if (ret)
+ 		return ret;
+ 
++	/* setup backup switchover mode */
++	if (!device_property_read_u8(&client->dev, "backup-switchover-mode",
++				     &bsm))  {
++		if (bsm <= 3) {
++			ret = regmap_update_bits(rv3028->regmap, RV3028_BACKUP,
++				RV3028_BACKUP_BSM_MASK,
++				(bsm & 0x03) << 2);
++
++			if (ret)
++				return ret;
++		} else {
++			dev_warn(&client->dev, "invalid backup switchover mode value\n");
++		}
++	}
++
+ 	/* setup trickle charger */
+ 	if (!device_property_read_u32(&client->dev, "trickle-resistor-ohms",
+ 				      &ohms)) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0118-lan78xx-use-default-alignment-for-rx-buffers.patch b/target/linux/bcm27xx/patches-5.15/950-0118-lan78xx-use-default-alignment-for-rx-buffers.patch
new file mode 100644
index 0000000000..a903f92d15
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0118-lan78xx-use-default-alignment-for-rx-buffers.patch
@@ -0,0 +1,23 @@
+From 0b3302cebb33cb64e4cff1c01996b61cec44fc0e Mon Sep 17 00:00:00 2001
+From: P33M <p33m@github.com>
+Date: Thu, 2 May 2019 11:53:45 +0100
+Subject: [PATCH] lan78xx: use default alignment for rx buffers
+
+The lan78xx uses a 12-byte hardware rx header, so there is no need
+to allocate SKBs with NET_IP_ALIGN set. Removes alignment faults
+in both dwc_otg and in ipv6 processing.
+---
+ drivers/net/usb/lan78xx.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -3527,7 +3527,7 @@ static int rx_submit(struct lan78xx_net
+ 	size_t size = dev->rx_urb_size;
+ 	int ret = 0;
+ 
+-	skb = netdev_alloc_skb_ip_align(dev->net, size);
++	skb = netdev_alloc_skb(dev->net, size);
+ 	if (!skb) {
+ 		usb_free_urb(urb);
+ 		return -ENOMEM;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0119-media-tc358743-Increase-FIFO-level-to-374.patch b/target/linux/bcm27xx/patches-5.15/950-0119-media-tc358743-Increase-FIFO-level-to-374.patch
new file mode 100644
index 0000000000..c69f896be9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0119-media-tc358743-Increase-FIFO-level-to-374.patch
@@ -0,0 +1,31 @@
+From dc5f634e99c4d31ce4b43f42ce789ebb943c38a5 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:56:59 +0000
+Subject: [PATCH] media: tc358743: Increase FIFO level to 374.
+
+The existing fixed value of 16 worked for UYVY 720P60 over
+2 lanes at 594MHz, or UYVY 1080P60 over 4 lanes. (RGB888
+1080P60 needs 6 lanes at 594MHz).
+It doesn't allow for lower resolutions to work as the FIFO
+underflows.
+
+374 is required for 1080P24-30 UYVY over 2 lanes @ 972Mbit/s, but
+>374 means that the FIFO underflows on 1080P50 UYVY over 2 lanes
+@ 972Mbit/s.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/i2c/tc358743.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -1950,7 +1950,7 @@ static int tc358743_probe_of(struct tc35
+ 	state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS;
+ 	state->pdata.enable_hdcp = false;
+ 	/* A FIFO level of 16 should be enough for 2-lane 720p60 at 594 MHz. */
+-	state->pdata.fifo_level = 16;
++	state->pdata.fifo_level = 374;
+ 	/*
+ 	 * The PLL input clock is obtained by dividing refclk by pll_prd.
+ 	 * It must be between 6 MHz and 40 MHz, lower frequency is better.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0120-media-tc358743-fix-connected-active-CSI-2-lane-repor.patch b/target/linux/bcm27xx/patches-5.15/950-0120-media-tc358743-fix-connected-active-CSI-2-lane-repor.patch
new file mode 100644
index 0000000000..b25b4a259c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0120-media-tc358743-fix-connected-active-CSI-2-lane-repor.patch
@@ -0,0 +1,74 @@
+From 31fe8b118083aa6caff216fa476ae2393c49df27 Mon Sep 17 00:00:00 2001
+From: Philipp Zabel <p.zabel@pengutronix.de>
+Date: Thu, 21 Sep 2017 17:30:24 +0200
+Subject: [PATCH] media: tc358743: fix connected/active CSI-2 lane
+ reporting
+
+g_mbus_config was supposed to indicate all supported lane numbers, not
+only the number of those currently in active use. Since the TC358743
+can dynamically reduce the number of active lanes if the required
+bandwidth allows for it, report all lane numbers up to the connected
+number of lanes as supported in pdata mode.
+In device tree mode, do not report lane count and clock mode at all, as
+the receiver driver can determine these from the device tree.
+
+To allow communicating the number of currently active lanes, add a new
+bitfield to the v4l2_mbus_config flags. This is a temporary fix, to be
+used only until a better solution is found.
+
+Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
+---
+ drivers/media/i2c/tc358743.c  | 14 ++++++++++++--
+ include/media/v4l2-mediabus.h |  8 ++++++++
+ 2 files changed, 20 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -1609,11 +1609,20 @@ static int tc358743_get_mbus_config(stru
+ 				    struct v4l2_mbus_config *cfg)
+ {
+ 	struct tc358743_state *state = to_state(sd);
++	const u32 mask = V4L2_MBUS_CSI2_LANE_MASK;
++
++	if (state->csi_lanes_in_use > state->bus.num_data_lanes)
++		return -EINVAL;
+ 
+ 	cfg->type = V4L2_MBUS_CSI2_DPHY;
++	cfg->flags = (state->csi_lanes_in_use << __ffs(mask)) & mask;
++
++	/* In DT mode, only report the number of active lanes */
++	if (sd->dev->of_node)
++		return 0;
+ 
+-	/* Support for non-continuous CSI-2 clock is missing in the driver */
+-	cfg->flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
++	/* Support for non-continuous CSI-2 clock is missing in pdate mode */
++	cfg->flags |= V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
+ 
+ 	switch (state->csi_lanes_in_use) {
+ 	case 1:
+@@ -2056,6 +2065,7 @@ static int tc358743_probe(struct i2c_cli
+ 	if (pdata) {
+ 		state->pdata = *pdata;
+ 		state->bus.flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
++		state->bus.num_data_lanes = 4;
+ 	} else {
+ 		err = tc358743_probe_of(state);
+ 		if (err == -ENODEV)
+--- a/include/media/v4l2-mediabus.h
++++ b/include/media/v4l2-mediabus.h
+@@ -92,6 +92,14 @@
+ 					 V4L2_MBUS_CSI2_CHANNEL_1 | \
+ 					 V4L2_MBUS_CSI2_CHANNEL_2 | \
+ 					 V4L2_MBUS_CSI2_CHANNEL_3)
++/*
++ * Number of lanes in use, 0 == use all available lanes (default)
++ *
++ * This is a temporary fix for devices that need to reduce the number of active
++ * lanes for certain modes, until g_mbus_config() can be replaced with a better
++ * solution.
++ */
++#define V4L2_MBUS_CSI2_LANE_MASK                (0xf << 10)
+ 
+ /**
+  * enum v4l2_mbus_type - media bus type
diff --git a/target/linux/bcm27xx/patches-5.15/950-0121-media-tc358743-Add-support-for-972Mbit-s-link-freq.patch b/target/linux/bcm27xx/patches-5.15/950-0121-media-tc358743-Add-support-for-972Mbit-s-link-freq.patch
new file mode 100644
index 0000000000..9af0f80c34
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0121-media-tc358743-Add-support-for-972Mbit-s-link-freq.patch
@@ -0,0 +1,79 @@
+From 2dec20593906fd84a4753cd526d6b133bb803522 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:57:21 +0000
+Subject: [PATCH] media: tc358743: Add support for 972Mbit/s link freq.
+
+Adds register setups for running the CSI lanes at 972Mbit/s,
+which allows 1080P50 UYVY down 2 lanes.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/i2c/tc358743.c | 47 +++++++++++++++++++++++++-----------
+ 1 file changed, 33 insertions(+), 14 deletions(-)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -1979,6 +1979,7 @@ static int tc358743_probe_of(struct tc35
+ 	/*
+ 	 * The CSI bps per lane must be between 62.5 Mbps and 1 Gbps.
+ 	 * The default is 594 Mbps for 4-lane 1080p60 or 2-lane 720p60.
++	 * 972 Mbps allows 1080P50 UYVY over 2-lane.
+ 	 */
+ 	bps_pr_lane = 2 * endpoint.link_frequencies[0];
+ 	if (bps_pr_lane < 62500000U || bps_pr_lane > 1000000000U) {
+@@ -1992,23 +1993,41 @@ static int tc358743_probe_of(struct tc35
+ 			       state->pdata.refclk_hz * state->pdata.pll_prd;
+ 
+ 	/*
+-	 * FIXME: These timings are from REF_02 for 594 Mbps per lane (297 MHz
+-	 * link frequency). In principle it should be possible to calculate
++	 * FIXME: These timings are from REF_02 for 594 or 972 Mbps per lane
++	 * (297 MHz or 486 MHz link frequency).
++	 * In principle it should be possible to calculate
+ 	 * them based on link frequency and resolution.
+ 	 */
+-	if (bps_pr_lane != 594000000U)
++	switch (bps_pr_lane) {
++	default:
+ 		dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane);
+-	state->pdata.lineinitcnt = 0xe80;
+-	state->pdata.lptxtimecnt = 0x003;
+-	/* tclk-preparecnt: 3, tclk-zerocnt: 20 */
+-	state->pdata.tclk_headercnt = 0x1403;
+-	state->pdata.tclk_trailcnt = 0x00;
+-	/* ths-preparecnt: 3, ths-zerocnt: 1 */
+-	state->pdata.ths_headercnt = 0x0103;
+-	state->pdata.twakeup = 0x4882;
+-	state->pdata.tclk_postcnt = 0x008;
+-	state->pdata.ths_trailcnt = 0x2;
+-	state->pdata.hstxvregcnt = 0;
++	case 594000000U:
++		state->pdata.lineinitcnt = 0xe80;
++		state->pdata.lptxtimecnt = 0x003;
++		/* tclk-preparecnt: 3, tclk-zerocnt: 20 */
++		state->pdata.tclk_headercnt = 0x1403;
++		state->pdata.tclk_trailcnt = 0x00;
++		/* ths-preparecnt: 3, ths-zerocnt: 1 */
++		state->pdata.ths_headercnt = 0x0103;
++		state->pdata.twakeup = 0x4882;
++		state->pdata.tclk_postcnt = 0x008;
++		state->pdata.ths_trailcnt = 0x2;
++		state->pdata.hstxvregcnt = 0;
++		break;
++	case 972000000U:
++		state->pdata.lineinitcnt = 0x1b58;
++		state->pdata.lptxtimecnt = 0x007;
++		/* tclk-preparecnt: 6, tclk-zerocnt: 40 */
++		state->pdata.tclk_headercnt = 0x2806;
++		state->pdata.tclk_trailcnt = 0x00;
++		/* ths-preparecnt: 6, ths-zerocnt: 8 */
++		state->pdata.ths_headercnt = 0x0806;
++		state->pdata.twakeup = 0x4268;
++		state->pdata.tclk_postcnt = 0x008;
++		state->pdata.ths_trailcnt = 0x5;
++		state->pdata.hstxvregcnt = 0;
++		break;
++	}
+ 
+ 	state->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+ 						    GPIOD_OUT_LOW);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0122-media-tc358743-Check-I2C-succeeded-during-probe.patch b/target/linux/bcm27xx/patches-5.15/950-0122-media-tc358743-Check-I2C-succeeded-during-probe.patch
new file mode 100644
index 0000000000..2565dba053
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0122-media-tc358743-Check-I2C-succeeded-during-probe.patch
@@ -0,0 +1,98 @@
+From 6e37652fbafcec197fb7de4ec25e5073b261551b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:57:34 +0000
+Subject: [PATCH] media: tc358743: Check I2C succeeded during probe.
+
+The probe for the TC358743 reads the CHIPID register from
+the device and compares it to the expected value of 0.
+If the I2C request fails then that also returns 0, so
+the driver loads thinking that the device is there.
+
+Generally I2C communications are reliable so there is
+limited need to check the return value on every transfer,
+therefore only amend the one read during probe to check
+for I2C errors.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/i2c/tc358743.c | 27 +++++++++++++++++++++++----
+ 1 file changed, 23 insertions(+), 4 deletions(-)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -110,7 +110,7 @@ static inline struct tc358743_state *to_
+ 
+ /* --------------- I2C --------------- */
+ 
+-static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
++static int i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
+ {
+ 	struct tc358743_state *state = to_state(sd);
+ 	struct i2c_client *client = state->i2c_client;
+@@ -136,6 +136,7 @@ static void i2c_rd(struct v4l2_subdev *s
+ 		v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n",
+ 				__func__, reg, client->addr);
+ 	}
++	return err != ARRAY_SIZE(msgs);
+ }
+ 
+ static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
+@@ -192,15 +193,24 @@ static void i2c_wr(struct v4l2_subdev *s
+ 	}
+ }
+ 
+-static noinline u32 i2c_rdreg(struct v4l2_subdev *sd, u16 reg, u32 n)
++static noinline u32 i2c_rdreg_err(struct v4l2_subdev *sd, u16 reg, u32 n,
++				  int *err)
+ {
++	int error;
+ 	__le32 val = 0;
+ 
+-	i2c_rd(sd, reg, (u8 __force *)&val, n);
++	error = i2c_rd(sd, reg, (u8 __force *)&val, n);
++	if (err)
++		*err = error;
+ 
+ 	return le32_to_cpu(val);
+ }
+ 
++static inline u32 i2c_rdreg(struct v4l2_subdev *sd, u16 reg, u32 n)
++{
++	return i2c_rdreg_err(sd, reg, n, NULL);
++}
++
+ static noinline void i2c_wrreg(struct v4l2_subdev *sd, u16 reg, u32 val, u32 n)
+ {
+ 	__le32 raw = cpu_to_le32(val);
+@@ -229,6 +239,13 @@ static u16 i2c_rd16(struct v4l2_subdev *
+ 	return i2c_rdreg(sd, reg, 2);
+ }
+ 
++static int i2c_rd16_err(struct v4l2_subdev *sd, u16 reg, u16 *value)
++{
++	int err;
++	*value = i2c_rdreg_err(sd, reg, 2, &err);
++	return err;
++}
++
+ static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val)
+ {
+ 	i2c_wrreg(sd, reg, val, 2);
+@@ -2066,6 +2083,7 @@ static int tc358743_probe(struct i2c_cli
+ 	struct tc358743_platform_data *pdata = client->dev.platform_data;
+ 	struct v4l2_subdev *sd;
+ 	u16 irq_mask = MASK_HDMI_MSK | MASK_CSI_MSK;
++	u16 chipid;
+ 	int err;
+ 
+ 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+@@ -2098,7 +2116,8 @@ static int tc358743_probe(struct i2c_cli
+ 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
+ 
+ 	/* i2c access */
+-	if ((i2c_rd16(sd, CHIPID) & MASK_CHIPID) != 0) {
++	if (i2c_rd16_err(sd, CHIPID, &chipid) ||
++	    (chipid & MASK_CHIPID) != 0) {
+ 		v4l2_info(sd, "not a TC358743 on address 0x%x\n",
+ 			  client->addr << 1);
+ 		return -ENODEV;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0123-media-adv7180-Default-to-the-first-valid-input.patch b/target/linux/bcm27xx/patches-5.15/950-0123-media-adv7180-Default-to-the-first-valid-input.patch
new file mode 100644
index 0000000000..c3e59aa4ef
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0123-media-adv7180-Default-to-the-first-valid-input.patch
@@ -0,0 +1,45 @@
+From 117d61f00d02070ce027db26c7fc3c6dcd7d405a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:57:46 +0000
+Subject: [PATCH] media: adv7180: Default to the first valid input
+
+The hardware default is differential CVBS on AIN1 & 2, which
+isn't very useful.
+
+Select the first input that is defined as valid for the
+chip variant (typically CVBS_AIN1).
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/i2c/adv7180.c | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+--- a/drivers/media/i2c/adv7180.c
++++ b/drivers/media/i2c/adv7180.c
+@@ -1291,6 +1291,7 @@ static const struct adv7180_chip_info ad
+ static int init_device(struct adv7180_state *state)
+ {
+ 	int ret;
++	int i;
+ 
+ 	mutex_lock(&state->mutex);
+ 
+@@ -1338,6 +1339,18 @@ static int init_device(struct adv7180_st
+ 			goto out_unlock;
+ 	}
+ 
++	/* Select first valid input */
++	for (i = 0; i < 32; i++) {
++		if (BIT(i) & state->chip_info->valid_input_mask) {
++			ret = state->chip_info->select_input(state, i);
++
++			if (ret == 0) {
++				state->input = i;
++				break;
++			}
++		}
++	}
++
+ out_unlock:
+ 	mutex_unlock(&state->mutex);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0124-media-adv7180-Add-YPrPb-support-for-ADV7282M.patch b/target/linux/bcm27xx/patches-5.15/950-0124-media-adv7180-Add-YPrPb-support-for-ADV7282M.patch
new file mode 100644
index 0000000000..b95a1503c7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0124-media-adv7180-Add-YPrPb-support-for-ADV7282M.patch
@@ -0,0 +1,24 @@
+From a0851cf564bb2966c6defad89de5b84fb46da32f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:57:56 +0000
+Subject: [PATCH] media: adv7180: Add YPrPb support for ADV7282M
+
+The ADV7282M can support YPbPr on AIN1-3, but this was
+not selectable from the driver. Add it to the list of
+supported input modes.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/i2c/adv7180.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/media/i2c/adv7180.c
++++ b/drivers/media/i2c/adv7180.c
+@@ -1280,6 +1280,7 @@ static const struct adv7180_chip_info ad
+ 		BIT(ADV7182_INPUT_SVIDEO_AIN1_AIN2) |
+ 		BIT(ADV7182_INPUT_SVIDEO_AIN3_AIN4) |
+ 		BIT(ADV7182_INPUT_SVIDEO_AIN7_AIN8) |
++		BIT(ADV7182_INPUT_YPRPB_AIN1_AIN2_AIN3) |
+ 		BIT(ADV7182_INPUT_DIFF_CVBS_AIN1_AIN2) |
+ 		BIT(ADV7182_INPUT_DIFF_CVBS_AIN3_AIN4) |
+ 		BIT(ADV7182_INPUT_DIFF_CVBS_AIN7_AIN8),
diff --git a/target/linux/bcm27xx/patches-5.15/950-0125-media-videodev2-Add-helper-defines-for-printing-FOUR.patch b/target/linux/bcm27xx/patches-5.15/950-0125-media-videodev2-Add-helper-defines-for-printing-FOUR.patch
new file mode 100644
index 0000000000..4c8e1f5064
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0125-media-videodev2-Add-helper-defines-for-printing-FOUR.patch
@@ -0,0 +1,28 @@
+From a37f337d00c9b0dff166c68ab420bbdca6744601 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:58:08 +0000
+Subject: [PATCH] media: videodev2: Add helper defines for printing
+ FOURCCs
+
+New helper defines that allow printing of a FOURCC using
+printf(V4L2_FOURCC_CONV, V4L2_FOURCC_CONV_ARGS(fourcc));
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ include/uapi/linux/videodev2.h | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -82,6 +82,11 @@
+ 	((__u32)(a) | ((__u32)(b) << 8) | ((__u32)(c) << 16) | ((__u32)(d) << 24))
+ #define v4l2_fourcc_be(a, b, c, d)	(v4l2_fourcc(a, b, c, d) | (1U << 31))
+ 
++#define V4L2_FOURCC_CONV "%c%c%c%c%s"
++#define V4L2_FOURCC_CONV_ARGS(fourcc) \
++	(fourcc) & 0x7f, ((fourcc) >> 8) & 0x7f, ((fourcc) >> 16) & 0x7f, \
++	((fourcc) >> 24) & 0x7f, (fourcc) & BIT(31) ? "-BE" : ""
++
+ /*
+  *	E N U M S
+  */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0126-dt-bindings-Document-BCM283x-CSI2-CCP2-receiver.patch b/target/linux/bcm27xx/patches-5.15/950-0126-dt-bindings-Document-BCM283x-CSI2-CCP2-receiver.patch
new file mode 100644
index 0000000000..ebc4f7b110
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0126-dt-bindings-Document-BCM283x-CSI2-CCP2-receiver.patch
@@ -0,0 +1,103 @@
+From cd4d3d5035acc4a63f290a6df928782ef24b442f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:59:06 +0000
+Subject: [PATCH] dt-bindings: Document BCM283x CSI2/CCP2 receiver
+
+Document the DT bindings for the CSI2/CCP2 receiver peripheral
+(known as Unicam) on BCM283x SoCs.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Acked-by: Rob Herring <robh@kernel.org>
+---
+ .../bindings/media/bcm2835-unicam.txt         | 85 +++++++++++++++++++
+ 1 file changed, 85 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/bcm2835-unicam.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/bcm2835-unicam.txt
+@@ -0,0 +1,85 @@
++Broadcom BCM283x Camera Interface (Unicam)
++------------------------------------------
++
++The Unicam block on BCM283x SoCs is the receiver for either
++CSI-2 or CCP2 data from image sensors or similar devices.
++
++The main platform using this SoC is the Raspberry Pi family of boards.
++On the Pi the VideoCore firmware can also control this hardware block,
++and driving it from two different processors will cause issues.
++To avoid this, the firmware checks the device tree configuration
++during boot. If it finds device tree nodes called csi0 or csi1 then
++it will stop the firmware accessing the block, and it can then
++safely be used via the device tree binding.
++
++Required properties:
++===================
++- compatible	: must be "brcm,bcm2835-unicam".
++- reg		: physical base address and length of the register sets for the
++		  device.
++- interrupts	: should contain the IRQ line for this Unicam instance.
++- clocks	: list of clock specifiers, corresponding to entries in
++		  clock-names property.
++- clock-names	: must contain an "lp" entry, matching entries in the
++		  clocks property.
++
++Unicam supports a single port node. It should contain one 'port' child node
++with child 'endpoint' node. Please refer to the bindings defined in
++Documentation/devicetree/bindings/media/video-interfaces.txt.
++
++Within the endpoint node the "remote-endpoint" and "data-lanes" properties
++are mandatory.
++Data lane reordering is not supported so the data lanes must be in order,
++starting at 1. The number of data lanes should represent the number of
++usable lanes for the hardware block. That may be limited by either the SoC or
++how the platform presents the interface, and the lower value must be used.
++
++Lane reordering is not supported on the clock lane either, so the optional
++property "clock-lane" will implicitly be <0>.
++Similarly lane inversion is not supported, therefore "lane-polarities" will
++implicitly be <0 0 0 0 0>.
++Neither of these values will be checked.
++
++Example:
++	csi1: csi1@7e801000 {
++		compatible = "brcm,bcm2835-unicam";
++		reg = <0x7e801000 0x800>,
++		      <0x7e802004 0x4>;
++		interrupts = <2 7>;
++		clocks = <&clocks BCM2835_CLOCK_CAM1>;
++		clock-names = "lp";
++
++		port {
++			csi1_ep: endpoint {
++				remote-endpoint = <&tc358743_0>;
++				data-lanes = <1 2>;
++			};
++		};
++	};
++
++	i2c0: i2c@7e205000 {
++		tc358743: csi-hdmi-bridge@0f {
++			compatible = "toshiba,tc358743";
++			reg = <0x0f>;
++
++			clocks = <&tc358743_clk>;
++			clock-names = "refclk";
++
++			tc358743_clk: bridge-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <27000000>;
++			};
++
++			port {
++				tc358743_0: endpoint {
++					remote-endpoint = <&csi1_ep>;
++					clock-lanes = <0>;
++					data-lanes = <1 2>;
++					clock-noncontinuous;
++					link-frequencies =
++						/bits/ 64 <297000000>;
++				};
++			};
++		};
++	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0127-MAINTAINERS-Add-entry-for-BCM2835-Unicam-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0127-MAINTAINERS-Add-entry-for-BCM2835-Unicam-driver.patch
new file mode 100644
index 0000000000..4c1bbed2a4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0127-MAINTAINERS-Add-entry-for-BCM2835-Unicam-driver.patch
@@ -0,0 +1,28 @@
+From 9d72bbabdd3ac98bde6b34ed43d7c11a5de9cd62 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 31 Oct 2018 14:59:40 +0000
+Subject: [PATCH] MAINTAINERS: Add entry for BCM2835 Unicam driver
+
+Adds entry for the new BCM2835 Unicam (CSI-2 receiver) driver
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ MAINTAINERS | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3552,6 +3552,13 @@ N:	bcm113*
+ N:	bcm216*
+ N:	kona
+ 
++BROADCOM BCM2835 CAMERA DRIVER
++M:	Dave Stevenson <dave.stevenson@raspberrypi.org>
++L:	linux-media@vger.kernel.org
++S:	Maintained
++F:	drivers/media/platform/bcm2835/
++F:	Documentation/devicetree/bindings/media/bcm2835-unicam.txt
++
+ BROADCOM BCM47XX MIPS ARCHITECTURE
+ M:	Hauke Mehrtens <hauke@hauke-m.de>
+ M:	Rafał Miłecki <zajec5@gmail.com>
diff --git a/target/linux/bcm27xx/patches-5.15/950-0128-media-tc358743-Return-an-appropriate-colorspace-from.patch b/target/linux/bcm27xx/patches-5.15/950-0128-media-tc358743-Return-an-appropriate-colorspace-from.patch
new file mode 100644
index 0000000000..1331971af5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0128-media-tc358743-Return-an-appropriate-colorspace-from.patch
@@ -0,0 +1,98 @@
+From 15d83e43c7eae44c48cdd3b2cd239c9ff2f74b2f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Thu, 22 Nov 2018 17:31:06 +0000
+Subject: [PATCH] media: tc358743: Return an appropriate colorspace
+ from tc358743_set_fmt
+
+When calling tc358743_set_fmt, the code was calling tc358743_get_fmt
+to choose a valid format. However that sets the colorspace
+based on what was read back from the chip. When you set the format,
+then the driver would choose and program the colorspace based
+on the format code.
+
+The result was that if you called try or set format for UYVY
+when the current format was RGB3 then you would get told sRGB,
+and try RGB3 when current was UYVY and you would get told
+SMPTE170M.
+
+The value programmed into the chip is determined by this driver,
+therefore there is no need to read back the value. Return the
+colorspace based on the format set/tried instead.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/i2c/tc358743.c | 40 +++++++++++++-----------------------
+ 1 file changed, 14 insertions(+), 26 deletions(-)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -1691,12 +1691,23 @@ static int tc358743_enum_mbus_code(struc
+ 	return 0;
+ }
+ 
++static u32 tc358743_g_colorspace(u32 code)
++{
++	switch (code) {
++	case MEDIA_BUS_FMT_RGB888_1X24:
++		return V4L2_COLORSPACE_SRGB;
++	case MEDIA_BUS_FMT_UYVY8_1X16:
++		return V4L2_COLORSPACE_SMPTE170M;
++	default:
++		return 0;
++	}
++}
++
+ static int tc358743_get_fmt(struct v4l2_subdev *sd,
+ 		struct v4l2_subdev_state *sd_state,
+ 		struct v4l2_subdev_format *format)
+ {
+ 	struct tc358743_state *state = to_state(sd);
+-	u8 vi_rep = i2c_rd8(sd, VI_REP);
+ 
+ 	if (format->pad != 0)
+ 		return -EINVAL;
+@@ -1706,23 +1717,7 @@ static int tc358743_get_fmt(struct v4l2_
+ 	format->format.height = state->timings.bt.height;
+ 	format->format.field = V4L2_FIELD_NONE;
+ 
+-	switch (vi_rep & MASK_VOUT_COLOR_SEL) {
+-	case MASK_VOUT_COLOR_RGB_FULL:
+-	case MASK_VOUT_COLOR_RGB_LIMITED:
+-		format->format.colorspace = V4L2_COLORSPACE_SRGB;
+-		break;
+-	case MASK_VOUT_COLOR_601_YCBCR_LIMITED:
+-	case MASK_VOUT_COLOR_601_YCBCR_FULL:
+-		format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
+-		break;
+-	case MASK_VOUT_COLOR_709_YCBCR_FULL:
+-	case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
+-		format->format.colorspace = V4L2_COLORSPACE_REC709;
+-		break;
+-	default:
+-		format->format.colorspace = 0;
+-		break;
+-	}
++	format->format.colorspace = tc358743_g_colorspace(format->format.code);
+ 
+ 	return 0;
+ }
+@@ -1737,18 +1732,11 @@ static int tc358743_set_fmt(struct v4l2_
+ 	int ret = tc358743_get_fmt(sd, sd_state, format);
+ 
+ 	format->format.code = code;
++	format->format.colorspace = tc358743_g_colorspace(code);
+ 
+ 	if (ret)
+ 		return ret;
+ 
+-	switch (code) {
+-	case MEDIA_BUS_FMT_RGB888_1X24:
+-	case MEDIA_BUS_FMT_UYVY8_1X16:
+-		break;
+-	default:
+-		return -EINVAL;
+-	}
+-
+ 	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+ 		return 0;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0129-staging-mmal-vchiq-Avoid-use-of-bool-in-structures.patch b/target/linux/bcm27xx/patches-5.15/950-0129-staging-mmal-vchiq-Avoid-use-of-bool-in-structures.patch
new file mode 100644
index 0000000000..ee2e957d24
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0129-staging-mmal-vchiq-Avoid-use-of-bool-in-structures.patch
@@ -0,0 +1,24 @@
+From 25b6c77ad01fde9b8238bc0bc5424d35385299c4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Mon, 29 Oct 2018 16:20:46 +0000
+Subject: [PATCH] staging: mmal-vchiq: Avoid use of bool in structures
+
+Fixes up a checkpatch error "Avoid using bool structure members
+because of possible alignment issues".
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -1775,7 +1775,7 @@ int vchiq_mmal_component_enable(struct v
+ 
+ 	ret = enable_component(instance, component);
+ 	if (ret == 0)
+-		component->enabled = true;
++		component->enabled = 1;
+ 
+ 	mutex_unlock(&instance->vchiq_mutex);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0130-staging-mmal-vchiq-Add-support-for-event-callbacks.patch b/target/linux/bcm27xx/patches-5.15/950-0130-staging-mmal-vchiq-Add-support-for-event-callbacks.patch
new file mode 100644
index 0000000000..be08b0a0ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0130-staging-mmal-vchiq-Add-support-for-event-callbacks.patch
@@ -0,0 +1,356 @@
+From afd05f3a13824923846e4ce5a25d0ff49221fd3f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Mon, 24 Sep 2018 18:15:38 +0100
+Subject: [PATCH] staging: mmal-vchiq: Add support for event callbacks.
+
+(Preparation for the codec driver).
+The codec uses the event mechanism to report things such as
+resolution changes. It is signalled by the cmd field of the buffer
+being non-zero.
+
+Add support for passing this information out to the client.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../vc04_services/vchiq-mmal/mmal-common.h    |   1 +
+ .../vc04_services/vchiq-mmal/mmal-msg.h       |  35 ++++
+ .../vc04_services/vchiq-mmal/mmal-vchiq.c     | 170 ++++++++++++++++--
+ .../vc04_services/vchiq-mmal/mmal-vchiq.h     |   4 +
+ 4 files changed, 196 insertions(+), 14 deletions(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
+@@ -50,6 +50,7 @@ struct mmal_buffer {
+ 
+ 	struct mmal_msg_context *msg_context;
+ 
++	u32 cmd;		/* MMAL command. 0=data. */
+ 	unsigned long length;
+ 	u32 mmal_flags;
+ 	s64 dts;
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-msg.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-msg.h
+@@ -346,6 +346,41 @@ struct mmal_msg_port_parameter_get_reply
+ /* event messages */
+ #define MMAL_WORKER_EVENT_SPACE 256
+ 
++/* Four CC's for events */
++#define MMAL_FOURCC(a, b, c, d) ((a) | (b << 8) | (c << 16) | (d << 24))
++
++#define MMAL_EVENT_ERROR		MMAL_FOURCC('E', 'R', 'R', 'O')
++#define MMAL_EVENT_EOS			MMAL_FOURCC('E', 'E', 'O', 'S')
++#define MMAL_EVENT_FORMAT_CHANGED	MMAL_FOURCC('E', 'F', 'C', 'H')
++#define MMAL_EVENT_PARAMETER_CHANGED	MMAL_FOURCC('E', 'P', 'C', 'H')
++
++/* Structs for each of the event message payloads */
++struct mmal_msg_event_eos {
++	u32 port_type;	/**< Type of port that received the end of stream */
++	u32 port_index;	/**< Index of port that received the end of stream */
++};
++
++/** Format changed event data. */
++struct mmal_msg_event_format_changed {
++	/* Minimum size of buffers the port requires */
++	u32 buffer_size_min;
++	/* Minimum number of buffers the port requires */
++	u32 buffer_num_min;
++	/* Size of buffers the port recommends for optimal performance.
++	 * A value of zero means no special recommendation.
++	 */
++	u32 buffer_size_recommended;
++	/* Number of buffers the port recommends for optimal
++	 * performance. A value of zero means no special recommendation.
++	 */
++	u32 buffer_num_recommended;
++
++	u32 es_ptr;
++	struct mmal_es_format format;
++	union mmal_es_specific_format es;
++	u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE];
++};
++
+ struct mmal_msg_event_to_host {
+ 	u32 client_component;	/* component context */
+ 
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -143,6 +143,8 @@ struct mmal_msg_context {
+ 			/* Presentation and Decode timestamps */
+ 			s64 pts;
+ 			s64 dts;
++			/* MMAL buffer command flag */
++			u32 cmd;
+ 
+ 			int status;	/* context status */
+ 
+@@ -233,18 +235,6 @@ release_msg_context(struct mmal_msg_cont
+ 	kfree(msg_context);
+ }
+ 
+-/* deals with receipt of event to host message */
+-static void event_to_host_cb(struct vchiq_mmal_instance *instance,
+-			     struct mmal_msg *msg, u32 msg_len)
+-{
+-	pr_debug("unhandled event\n");
+-	pr_debug("component:%u port type:%d num:%d cmd:0x%x length:%d\n",
+-		 msg->u.event_to_host.client_component,
+-		 msg->u.event_to_host.port_type,
+-		 msg->u.event_to_host.port_num,
+-		 msg->u.event_to_host.cmd, msg->u.event_to_host.length);
+-}
+-
+ /* workqueue scheduled callback
+  *
+  * we do this because it is important we do not call any other vchiq
+@@ -266,13 +256,18 @@ static void buffer_work_cb(struct work_s
+ 	buffer->mmal_flags = msg_context->u.bulk.mmal_flags;
+ 	buffer->dts = msg_context->u.bulk.dts;
+ 	buffer->pts = msg_context->u.bulk.pts;
++	buffer->cmd = msg_context->u.bulk.cmd;
+ 
+-	atomic_dec(&msg_context->u.bulk.port->buffers_with_vpu);
++	if (!buffer->cmd)
++		atomic_dec(&msg_context->u.bulk.port->buffers_with_vpu);
+ 
+ 	msg_context->u.bulk.port->buffer_cb(msg_context->u.bulk.instance,
+ 					    msg_context->u.bulk.port,
+ 					    msg_context->u.bulk.status,
+ 					    msg_context->u.bulk.buffer);
++
++	if (buffer->cmd)
++		mutex_unlock(&msg_context->u.bulk.port->event_context_mutex);
+ }
+ 
+ /* workqueue scheduled callback to handle receiving buffers
+@@ -350,6 +345,7 @@ static int bulk_receive(struct vchiq_mma
+ 	msg_context->u.bulk.buffer_used = rd_len;
+ 	msg_context->u.bulk.dts = msg->u.buffer_from_host.buffer_header.dts;
+ 	msg_context->u.bulk.pts = msg->u.buffer_from_host.buffer_header.pts;
++	msg_context->u.bulk.cmd = msg->u.buffer_from_host.buffer_header.cmd;
+ 
+ 	queue_work(msg_context->instance->bulk_wq,
+ 		   &msg_context->u.bulk.buffer_to_host_work);
+@@ -452,6 +448,103 @@ buffer_from_host(struct vchiq_mmal_insta
+ 	return ret;
+ }
+ 
++/* deals with receipt of event to host message */
++static void event_to_host_cb(struct vchiq_mmal_instance *instance,
++			     struct mmal_msg *msg, u32 msg_len)
++{
++	/* FIXME: Not going to work on 64 bit */
++	struct vchiq_mmal_component *component =
++		(struct vchiq_mmal_component *)msg->u.event_to_host.client_component;
++	struct vchiq_mmal_port *port = NULL;
++	struct mmal_msg_context *msg_context;
++	u32 port_num = msg->u.event_to_host.port_num;
++
++	if (msg->u.buffer_from_host.drvbuf.magic == MMAL_MAGIC) {
++		pr_err("%s: MMAL_MSG_TYPE_BUFFER_TO_HOST with bad magic\n",
++		       __func__);
++		return;
++	}
++
++	switch (msg->u.event_to_host.port_type) {
++	case MMAL_PORT_TYPE_CONTROL:
++		if (port_num) {
++			pr_err("%s: port_num of %u >= number of ports 1",
++			       __func__, port_num);
++			return;
++		}
++		port = &component->control;
++		break;
++	case MMAL_PORT_TYPE_INPUT:
++		if (port_num >= component->inputs) {
++			pr_err("%s: port_num of %u >= number of ports %u",
++			       __func__, port_num,
++			       port_num >= component->inputs);
++			return;
++		}
++		port = &component->input[port_num];
++		break;
++	case MMAL_PORT_TYPE_OUTPUT:
++		if (port_num >= component->outputs) {
++			pr_err("%s: port_num of %u >= number of ports %u",
++			       __func__, port_num,
++			       port_num >= component->outputs);
++			return;
++		}
++		port = &component->output[port_num];
++		break;
++	case MMAL_PORT_TYPE_CLOCK:
++		if (port_num >= component->clocks) {
++			pr_err("%s: port_num of %u >= number of ports %u",
++			       __func__, port_num,
++			       port_num >= component->clocks);
++			return;
++		}
++		port = &component->clock[port_num];
++		break;
++	default:
++		break;
++	}
++
++	if (!mutex_trylock(&port->event_context_mutex)) {
++		pr_err("dropping event 0x%x\n", msg->u.event_to_host.cmd);
++		return;
++	}
++	msg_context = port->event_context;
++
++	if (msg->h.status != MMAL_MSG_STATUS_SUCCESS) {
++		/* message reception had an error */
++		//pr_warn
++		pr_err("%s: error %d in reply\n", __func__, msg->h.status);
++
++		msg_context->u.bulk.status = msg->h.status;
++	} else if (msg->u.event_to_host.length > MMAL_WORKER_EVENT_SPACE) {
++		/* data is not in message, queue a bulk receive */
++		pr_err("%s: payload not in message - bulk receive??! NOT SUPPORTED\n",
++		       __func__);
++		msg_context->u.bulk.status = -1;
++	} else {
++		memcpy(msg_context->u.bulk.buffer->buffer,
++		       msg->u.event_to_host.data,
++		       msg->u.event_to_host.length);
++
++		msg_context->u.bulk.buffer_used =
++		    msg->u.event_to_host.length;
++
++		msg_context->u.bulk.mmal_flags = 0;
++		msg_context->u.bulk.dts = MMAL_TIME_UNKNOWN;
++		msg_context->u.bulk.pts = MMAL_TIME_UNKNOWN;
++		msg_context->u.bulk.cmd = msg->u.event_to_host.cmd;
++
++		pr_debug("event component:%u port type:%d num:%d cmd:0x%x length:%d\n",
++			 msg->u.event_to_host.client_component,
++			 msg->u.event_to_host.port_type,
++			 msg->u.event_to_host.port_num,
++			 msg->u.event_to_host.cmd, msg->u.event_to_host.length);
++	}
++
++	schedule_work(&msg_context->u.bulk.work);
++}
++
+ /* deals with receipt of buffer to host message */
+ static void buffer_to_host_cb(struct vchiq_mmal_instance *instance,
+ 			      struct mmal_msg *msg, u32 msg_len)
+@@ -1332,6 +1425,7 @@ static int port_disable(struct vchiq_mma
+ 				mmalbuf->mmal_flags = 0;
+ 				mmalbuf->dts = MMAL_TIME_UNKNOWN;
+ 				mmalbuf->pts = MMAL_TIME_UNKNOWN;
++				mmalbuf->cmd = 0;
+ 				port->buffer_cb(instance,
+ 						port, 0, mmalbuf);
+ 			}
+@@ -1633,6 +1727,43 @@ int mmal_vchi_buffer_cleanup(struct mmal
+ }
+ EXPORT_SYMBOL_GPL(mmal_vchi_buffer_cleanup);
+ 
++static void init_event_context(struct vchiq_mmal_instance *instance,
++			       struct vchiq_mmal_port *port)
++{
++	struct mmal_msg_context *ctx = get_msg_context(instance);
++
++	mutex_init(&port->event_context_mutex);
++
++	port->event_context = ctx;
++	ctx->u.bulk.instance = instance;
++	ctx->u.bulk.port = port;
++	ctx->u.bulk.buffer =
++		kzalloc(sizeof(*ctx->u.bulk.buffer), GFP_KERNEL);
++	if (!ctx->u.bulk.buffer)
++		goto release_msg_context;
++	ctx->u.bulk.buffer->buffer = kzalloc(MMAL_WORKER_EVENT_SPACE,
++					     GFP_KERNEL);
++	if (!ctx->u.bulk.buffer->buffer)
++		goto release_buffer;
++
++	INIT_WORK(&ctx->u.bulk.work, buffer_work_cb);
++	return;
++
++release_buffer:
++	kfree(ctx->u.bulk.buffer);
++release_msg_context:
++	release_msg_context(ctx);
++}
++
++static void free_event_context(struct vchiq_mmal_port *port)
++{
++	struct mmal_msg_context *ctx = port->event_context;
++
++	kfree(ctx->u.bulk.buffer->buffer);
++	kfree(ctx->u.bulk.buffer);
++	release_msg_context(ctx);
++}
++
+ /* Initialise a mmal component and its ports
+  *
+  */
+@@ -1682,6 +1813,7 @@ int vchiq_mmal_component_init(struct vch
+ 	ret = port_info_get(instance, &component->control);
+ 	if (ret < 0)
+ 		goto release_component;
++	init_event_context(instance, &component->control);
+ 
+ 	for (idx = 0; idx < component->inputs; idx++) {
+ 		component->input[idx].type = MMAL_PORT_TYPE_INPUT;
+@@ -1692,6 +1824,7 @@ int vchiq_mmal_component_init(struct vch
+ 		ret = port_info_get(instance, &component->input[idx]);
+ 		if (ret < 0)
+ 			goto release_component;
++		init_event_context(instance, &component->input[idx]);
+ 	}
+ 
+ 	for (idx = 0; idx < component->outputs; idx++) {
+@@ -1703,6 +1836,7 @@ int vchiq_mmal_component_init(struct vch
+ 		ret = port_info_get(instance, &component->output[idx]);
+ 		if (ret < 0)
+ 			goto release_component;
++		init_event_context(instance, &component->output[idx]);
+ 	}
+ 
+ 	for (idx = 0; idx < component->clocks; idx++) {
+@@ -1714,6 +1848,7 @@ int vchiq_mmal_component_init(struct vch
+ 		ret = port_info_get(instance, &component->clock[idx]);
+ 		if (ret < 0)
+ 			goto release_component;
++		init_event_context(instance, &component->clock[idx]);
+ 	}
+ 
+ 	*component_out = component;
+@@ -1739,7 +1874,7 @@ EXPORT_SYMBOL_GPL(vchiq_mmal_component_i
+ int vchiq_mmal_component_finalise(struct vchiq_mmal_instance *instance,
+ 				  struct vchiq_mmal_component *component)
+ {
+-	int ret;
++	int ret, idx;
+ 
+ 	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+ 		return -EINTR;
+@@ -1751,6 +1886,13 @@ int vchiq_mmal_component_finalise(struct
+ 
+ 	component->in_use = 0;
+ 
++	for (idx = 0; idx < component->inputs; idx++)
++		free_event_context(&component->input[idx]);
++	for (idx = 0; idx < component->outputs; idx++)
++		free_event_context(&component->output[idx]);
++	for (idx = 0; idx < component->clocks; idx++)
++		free_event_context(&component->clock[idx]);
++
+ 	mutex_unlock(&instance->vchiq_mutex);
+ 
+ 	return ret;
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
+@@ -79,6 +79,10 @@ struct vchiq_mmal_port {
+ 	vchiq_mmal_buffer_cb buffer_cb;
+ 	/* callback context */
+ 	void *cb_ctx;
++
++	/* ensure serialised use of the one event context structure */
++	struct mutex event_context_mutex;
++	struct mmal_msg_context *event_context;
+ };
+ 
+ struct vchiq_mmal_component {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0131-staging-vc04_services-Support-sending-data-to-MMAL-p.patch b/target/linux/bcm27xx/patches-5.15/950-0131-staging-vc04_services-Support-sending-data-to-MMAL-p.patch
new file mode 100644
index 0000000000..672947991f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0131-staging-vc04_services-Support-sending-data-to-MMAL-p.patch
@@ -0,0 +1,42 @@
+From ae46b4dee88f388ab0a09487718e0dad516cb5de Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Mon, 24 Sep 2018 18:26:02 +0100
+Subject: [PATCH] staging: vc04_services: Support sending data to MMAL
+ ports
+
+Add the ability to send data to ports. This only supports
+zero copy mode as the required bulk transfer setup calls
+are not done.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../vc04_services/vchiq-mmal/mmal-vchiq.c      | 18 +++++++++++++-----
+ 1 file changed, 13 insertions(+), 5 deletions(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -422,11 +422,19 @@ buffer_from_host(struct vchiq_mmal_insta
+ 	m.u.buffer_from_host.buffer_header.data =
+ 		(u32)(unsigned long)buf->buffer;
+ 	m.u.buffer_from_host.buffer_header.alloc_size = buf->buffer_size;
+-	m.u.buffer_from_host.buffer_header.length = 0;	/* nothing used yet */
+-	m.u.buffer_from_host.buffer_header.offset = 0;	/* no offset */
+-	m.u.buffer_from_host.buffer_header.flags = 0;	/* no flags */
+-	m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN;
+-	m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN;
++	if (port->type == MMAL_PORT_TYPE_OUTPUT) {
++		m.u.buffer_from_host.buffer_header.length = 0;
++		m.u.buffer_from_host.buffer_header.offset = 0;
++		m.u.buffer_from_host.buffer_header.flags = 0;
++		m.u.buffer_from_host.buffer_header.pts = MMAL_TIME_UNKNOWN;
++		m.u.buffer_from_host.buffer_header.dts = MMAL_TIME_UNKNOWN;
++	} else {
++		m.u.buffer_from_host.buffer_header.length = buf->length;
++		m.u.buffer_from_host.buffer_header.offset = 0;
++		m.u.buffer_from_host.buffer_header.flags = buf->mmal_flags;
++		m.u.buffer_from_host.buffer_header.pts = buf->pts;
++		m.u.buffer_from_host.buffer_header.dts = buf->dts;
++	}
+ 
+ 	/* clear buffer type specific data */
+ 	memset(&m.u.buffer_from_host.buffer_header_type_specific, 0,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0132-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch b/target/linux/bcm27xx/patches-5.15/950-0132-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch
new file mode 100644
index 0000000000..d9d644a59c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0132-media-videobuf2-Allow-exporting-of-a-struct-dmabuf.patch
@@ -0,0 +1,83 @@
+From 36738d2665f65c18ba507935b82287a2896c3cea Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Mon, 29 Oct 2018 17:57:45 +0000
+Subject: [PATCH] media: videobuf2: Allow exporting of a struct dmabuf
+
+videobuf2 only allowed exporting a dmabuf as a file descriptor,
+but there are instances where having the struct dma_buf is
+useful within the kernel.
+
+Split the current implementation into two, one step which
+exports a struct dma_buf, and the second which converts that
+into an fd.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../media/common/videobuf2/videobuf2-core.c   | 21 ++++++++++++++++---
+ include/media/videobuf2-core.h                | 15 +++++++++++++
+ 2 files changed, 33 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/common/videobuf2/videobuf2-core.c
++++ b/drivers/media/common/videobuf2/videobuf2-core.c
+@@ -2144,12 +2144,12 @@ static int __find_plane_by_offset(struct
+ 	return -EINVAL;
+ }
+ 
+-int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
+-		unsigned int index, unsigned int plane, unsigned int flags)
++int vb2_core_expbuf_dmabuf(struct vb2_queue *q, unsigned int type,
++			   unsigned int index, unsigned int plane,
++			   unsigned int flags, struct dma_buf **dmabuf)
+ {
+ 	struct vb2_buffer *vb = NULL;
+ 	struct vb2_plane *vb_plane;
+-	int ret;
+ 	struct dma_buf *dbuf;
+ 
+ 	if (q->memory != VB2_MEMORY_MMAP) {
+@@ -2201,6 +2201,21 @@ int vb2_core_expbuf(struct vb2_queue *q,
+ 		return -EINVAL;
+ 	}
+ 
++	*dmabuf = dbuf;
++	return 0;
++}
++EXPORT_SYMBOL_GPL(vb2_core_expbuf_dmabuf);
++
++int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
++		    unsigned int index, unsigned int plane, unsigned int flags)
++{
++	struct dma_buf *dbuf;
++	int ret;
++
++	ret = vb2_core_expbuf_dmabuf(q, type, index, plane, flags, &dbuf);
++	if (ret)
++		return ret;
++
+ 	ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
+ 	if (ret < 0) {
+ 		dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
+--- a/include/media/videobuf2-core.h
++++ b/include/media/videobuf2-core.h
+@@ -906,6 +906,21 @@ int vb2_core_streamon(struct vb2_queue *
+ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
+ 
+ /**
++ * vb2_core_expbuf_dmabuf() - Export a buffer as a dma_buf structure
++ * @q:         videobuf2 queue
++ * @type:      buffer type
++ * @index:     id number of the buffer
++ * @plane:     index of the plane to be exported, 0 for single plane queues
++ * @flags:     flags for newly created file, currently only O_CLOEXEC is
++ *             supported, refer to manual of open syscall for more details
++ * @dmabuf:    Returns the dmabuf pointer
++ *
++ */
++int vb2_core_expbuf_dmabuf(struct vb2_queue *q, unsigned int type,
++			   unsigned int index, unsigned int plane,
++			   unsigned int flags, struct dma_buf **dmabuf);
++
++/**
+  * vb2_core_expbuf() - Export a buffer as a file descriptor.
+  * @q:		pointer to &struct vb2_queue with videobuf2 queue.
+  * @fd:		pointer to the file descriptor associated with DMABUF
diff --git a/target/linux/bcm27xx/patches-5.15/950-0133-staging-mmal-vchiq-Fix-client_component-for-64-bit-k.patch b/target/linux/bcm27xx/patches-5.15/950-0133-staging-mmal-vchiq-Fix-client_component-for-64-bit-k.patch
new file mode 100644
index 0000000000..8ad88f6b4d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0133-staging-mmal-vchiq-Fix-client_component-for-64-bit-k.patch
@@ -0,0 +1,35 @@
+From ad99dc8a0f71efaa3c97669f77214d43f6f0120c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 22 Jan 2019 12:04:09 +0000
+Subject: [PATCH] staging: mmal-vchiq: Fix client_component for 64 bit
+ kernel
+
+The MMAL client_component field is used with the event
+mechanism to allow the client to identify the component for
+which the event is generated.
+The field is only 32bits in size, therefore we can't use a
+pointer to the component in a 64 bit kernel.
+
+Component handles are already held in an array per VCHI
+instance, so use the array index as the client_component handle
+to avoid having to create a new IDR for this purpose.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -460,9 +460,9 @@ buffer_from_host(struct vchiq_mmal_insta
+ static void event_to_host_cb(struct vchiq_mmal_instance *instance,
+ 			     struct mmal_msg *msg, u32 msg_len)
+ {
+-	/* FIXME: Not going to work on 64 bit */
++	int comp_idx = msg->u.event_to_host.client_component;
+ 	struct vchiq_mmal_component *component =
+-		(struct vchiq_mmal_component *)msg->u.event_to_host.client_component;
++					&instance->component[comp_idx];
+ 	struct vchiq_mmal_port *port = NULL;
+ 	struct mmal_msg_context *msg_context;
+ 	u32 port_num = msg->u.event_to_host.port_num;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0134-clk-clk-bcm2835-Use-zd-when-printing-size_t.patch b/target/linux/bcm27xx/patches-5.15/950-0134-clk-clk-bcm2835-Use-zd-when-printing-size_t.patch
new file mode 100644
index 0000000000..a7c0f52876
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0134-clk-clk-bcm2835-Use-zd-when-printing-size_t.patch
@@ -0,0 +1,24 @@
+From dee9ac8a70366cf0bf589a173bca21f4c9c65b94 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Thu, 24 Jan 2019 15:09:28 +0000
+Subject: [PATCH] clk: clk-bcm2835: Use %zd when printing size_t
+
+The debug text for how many clocks have been registered
+uses "%d" with a size_t. Correct it to "%zd".
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -2376,7 +2376,7 @@ static int bcm2835_clk_probe(struct plat
+ 		return ret;
+ 
+ 	/* note that we have registered all the clocks */
+-	dev_dbg(dev, "registered %d clocks\n", asize);
++	dev_dbg(dev, "registered %zd clocks\n", asize);
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0135-staging-mmal_vchiq-Add-in-the-Bayer-encoding-formats.patch b/target/linux/bcm27xx/patches-5.15/950-0135-staging-mmal_vchiq-Add-in-the-Bayer-encoding-formats.patch
new file mode 100644
index 0000000000..53bbfaa6a6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0135-staging-mmal_vchiq-Add-in-the-Bayer-encoding-formats.patch
@@ -0,0 +1,51 @@
+From f33f3ee66df19b5474487d0ea3c5a3d2d90bfc78 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 13 Feb 2019 12:33:29 +0000
+Subject: [PATCH] staging: mmal_vchiq: Add in the Bayer encoding
+ formats
+
+The list of formats was copied before Bayer support was added.
+The ISP supports Bayer and is being supported by the bcm2835_codec
+driver, so add in the encodings for them.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../vc04_services/vchiq-mmal/mmal-encodings.h | 27 +++++++++++++++++++
+ 1 file changed, 27 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
+@@ -69,6 +69,33 @@
+  */
+ #define MMAL_ENCODING_OPAQUE           MMAL_FOURCC('O', 'P', 'Q', 'V')
+ 
++/* Bayer formats
++ * FourCC values copied from V4L2 where defined.
++ */
++/* 8 bit per pixel Bayer formats. */
++#define MMAL_ENCODING_BAYER_SBGGR8     MMAL_FOURCC('B', 'A', '8', '1')
++#define MMAL_ENCODING_BAYER_SGBRG8     MMAL_FOURCC('G', 'B', 'R', 'G')
++#define MMAL_ENCODING_BAYER_SGRBG8     MMAL_FOURCC('G', 'R', 'B', 'G')
++#define MMAL_ENCODING_BAYER_SRGGB8     MMAL_FOURCC('R', 'G', 'G', 'B')
++
++/* 10 bit per pixel packed Bayer formats. */
++#define MMAL_ENCODING_BAYER_SBGGR10P   MMAL_FOURCC('p', 'B', 'A', 'A')
++#define MMAL_ENCODING_BAYER_SGRBG10P   MMAL_FOURCC('p', 'g', 'A', 'A')
++#define MMAL_ENCODING_BAYER_SGBRG10P   MMAL_FOURCC('p', 'G', 'A', 'A')
++#define MMAL_ENCODING_BAYER_SRGGB10P   MMAL_FOURCC('p', 'R', 'A', 'A')
++
++/* 12 bit per pixel packed Bayer formats. */
++#define MMAL_ENCODING_BAYER_SBGGR12P   MMAL_FOURCC('p', 'B', '1', '2')
++#define MMAL_ENCODING_BAYER_SGRBG12P   MMAL_FOURCC('p', 'g', '1', '2')
++#define MMAL_ENCODING_BAYER_SGBRG12P   MMAL_FOURCC('p', 'G', '1', '2')
++#define MMAL_ENCODING_BAYER_SRGGB12P   MMAL_FOURCC('p', 'R', '1', '2')
++
++/* 16 bit per pixel Bayer formats. */
++#define MMAL_ENCODING_BAYER_SBGGR16    MMAL_FOURCC('B', 'G', '1', '6')
++#define MMAL_ENCODING_BAYER_SGBRG16    MMAL_FOURCC('G', 'B', '1', '6')
++#define MMAL_ENCODING_BAYER_SGRBG16    MMAL_FOURCC('G', 'R', '1', '6')
++#define MMAL_ENCODING_BAYER_SRGGB16    MMAL_FOURCC('R', 'G', '1', '6')
++
+ /** An EGL image handle
+  */
+ #define MMAL_ENCODING_EGL_IMAGE        MMAL_FOURCC('E', 'G', 'L', 'I')
diff --git a/target/linux/bcm27xx/patches-5.15/950-0136-staging-mmal-vchiq-Update-mmal_parameters.h-with-rec.patch b/target/linux/bcm27xx/patches-5.15/950-0136-staging-mmal-vchiq-Update-mmal_parameters.h-with-rec.patch
new file mode 100644
index 0000000000..12884a84ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0136-staging-mmal-vchiq-Update-mmal_parameters.h-with-rec.patch
@@ -0,0 +1,56 @@
+From 036071f5042514f2f8e89f1f87581f9c472ee600 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Mon, 18 Feb 2019 15:52:29 +0000
+Subject: [PATCH] staging: mmal-vchiq: Update mmal_parameters.h with
+ recently defined params
+
+mmal_parameters.h hasn't been updated to reflect additions made
+over the last few years. Update it to reflect the currently
+supported parameters.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../vchiq-mmal/mmal-parameters.h              | 32 ++++++++++++++++++-
+ 1 file changed, 31 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -580,7 +580,37 @@ enum mmal_parameter_video_type {
+ 	MMAL_PARAMETER_VIDEO_ENCODE_H264_LOW_DELAY_HRD_FLAG,
+ 
+ 	/**< @ref MMAL_PARAMETER_BOOLEAN_T */
+-	MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER
++	MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER,
++
++	/**< Take a @ref MMAL_PARAMETER_BOOLEAN_T. */
++	MMAL_PARAMETER_VIDEO_ENCODE_SEI_ENABLE,
++
++	/**< Take a @ref MMAL_PARAMETER_BOOLEAN_T. */
++	MMAL_PARAMETER_VIDEO_ENCODE_INLINE_VECTORS,
++
++	/**< Take a @ref MMAL_PARAMETER_VIDEO_RENDER_STATS_T. */
++	MMAL_PARAMETER_VIDEO_RENDER_STATS,
++
++	/**< Take a @ref MMAL_PARAMETER_VIDEO_INTERLACE_TYPE_T. */
++	MMAL_PARAMETER_VIDEO_INTERLACE_TYPE,
++
++	/**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_VIDEO_INTERPOLATE_TIMESTAMPS,
++
++	/**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_VIDEO_ENCODE_SPS_TIMING,
++
++	/**< Takes a @ref MMAL_PARAMETER_UINT32_T */
++	MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS,
++
++	/**< Takes a @ref MMAL_PARAMETER_SOURCE_PATTERN_T */
++	MMAL_PARAMETER_VIDEO_SOURCE_PATTERN,
++
++	/**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_VIDEO_ENCODE_SEPARATE_NAL_BUFS,
++
++	/**< Takes a @ref MMAL_PARAMETER_UINT32_T */
++	MMAL_PARAMETER_VIDEO_DROPPABLE_PFRAME_LENGTH,
+ };
+ 
+ /** Valid mirror modes */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0137-staging-mmal-vchiq-Free-the-event-context-for-contro.patch b/target/linux/bcm27xx/patches-5.15/950-0137-staging-mmal-vchiq-Free-the-event-context-for-contro.patch
new file mode 100644
index 0000000000..e8ae2f6b03
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0137-staging-mmal-vchiq-Free-the-event-context-for-contro.patch
@@ -0,0 +1,28 @@
+From f99058d025b1872c80bd9a12da8e1bc5551f0649 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 1 May 2019 13:27:23 +0100
+Subject: [PATCH] staging: mmal-vchiq: Free the event context for
+ control ports
+
+vchiq_mmal_component_init calls init_event_context for the
+control port, but vchiq_mmal_component_finalise didn't free
+it, causing a memory leak..
+
+Add the free call.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -1901,6 +1901,8 @@ int vchiq_mmal_component_finalise(struct
+ 	for (idx = 0; idx < component->clocks; idx++)
+ 		free_event_context(&component->clock[idx]);
+ 
++	free_event_context(&component->control);
++
+ 	mutex_unlock(&instance->vchiq_mutex);
+ 
+ 	return ret;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0138-staging-mmal-vchiq-Fix-memory-leak-in-error-path.patch b/target/linux/bcm27xx/patches-5.15/950-0138-staging-mmal-vchiq-Fix-memory-leak-in-error-path.patch
new file mode 100644
index 0000000000..dda0d26c00
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0138-staging-mmal-vchiq-Fix-memory-leak-in-error-path.patch
@@ -0,0 +1,76 @@
+From bd1a7a80ea59c30541a9ec12eb953068d49f7855 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Thu, 2 May 2019 15:50:01 +0100
+Subject: [PATCH] staging: mmal-vchiq: Fix memory leak in error path
+
+On error, vchiq_mmal_component_init could leave the
+event context allocated for ports.
+Clean them up in the error path.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../vc04_services/vchiq-mmal/mmal-vchiq.c     | 29 +++++++++++++------
+ 1 file changed, 20 insertions(+), 9 deletions(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -1767,9 +1767,26 @@ static void free_event_context(struct vc
+ {
+ 	struct mmal_msg_context *ctx = port->event_context;
+ 
++	if (!ctx)
++		return;
++
+ 	kfree(ctx->u.bulk.buffer->buffer);
+ 	kfree(ctx->u.bulk.buffer);
+ 	release_msg_context(ctx);
++	port->event_context = NULL;
++}
++
++static void release_all_event_contexts(struct vchiq_mmal_component *component)
++{
++	int idx;
++
++	for (idx = 0; idx < component->inputs; idx++)
++		free_event_context(&component->input[idx]);
++	for (idx = 0; idx < component->outputs; idx++)
++		free_event_context(&component->output[idx]);
++	for (idx = 0; idx < component->clocks; idx++)
++		free_event_context(&component->clock[idx]);
++	free_event_context(&component->control);
+ }
+ 
+ /* Initialise a mmal component and its ports
+@@ -1867,6 +1884,7 @@ int vchiq_mmal_component_init(struct vch
+ 
+ release_component:
+ 	destroy_component(instance, component);
++	release_all_event_contexts(component);
+ unlock:
+ 	if (component)
+ 		component->in_use = 0;
+@@ -1882,7 +1900,7 @@ EXPORT_SYMBOL_GPL(vchiq_mmal_component_i
+ int vchiq_mmal_component_finalise(struct vchiq_mmal_instance *instance,
+ 				  struct vchiq_mmal_component *component)
+ {
+-	int ret, idx;
++	int ret;
+ 
+ 	if (mutex_lock_interruptible(&instance->vchiq_mutex))
+ 		return -EINTR;
+@@ -1894,14 +1912,7 @@ int vchiq_mmal_component_finalise(struct
+ 
+ 	component->in_use = 0;
+ 
+-	for (idx = 0; idx < component->inputs; idx++)
+-		free_event_context(&component->input[idx]);
+-	for (idx = 0; idx < component->outputs; idx++)
+-		free_event_context(&component->output[idx]);
+-	for (idx = 0; idx < component->clocks; idx++)
+-		free_event_context(&component->clock[idx]);
+-
+-	free_event_context(&component->control);
++	release_all_event_contexts(component);
+ 
+ 	mutex_unlock(&instance->vchiq_mutex);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0139-w1-w1-gpio-Make-GPIO-an-output-for-strong-pullup.patch b/target/linux/bcm27xx/patches-5.15/950-0139-w1-w1-gpio-Make-GPIO-an-output-for-strong-pullup.patch
new file mode 100644
index 0000000000..b874c009a5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0139-w1-w1-gpio-Make-GPIO-an-output-for-strong-pullup.patch
@@ -0,0 +1,27 @@
+From f15d0b837549943a865c9d990d1d07710f3635e9 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 12 Jun 2019 17:15:05 +0100
+Subject: [PATCH] w1: w1-gpio: Make GPIO an output for strong pullup
+
+The logic to drive the data line high to implement a strong pullup
+assumed that the pin was already an output - setting a value does
+not change an input.
+
+See: https://github.com/raspberrypi/firmware/issues/1143
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/w1/masters/w1-gpio.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/w1/masters/w1-gpio.c
++++ b/drivers/w1/masters/w1-gpio.c
+@@ -30,7 +30,7 @@ static u8 w1_gpio_set_pullup(void *data,
+ 			 * This will OVERRIDE open drain emulation and force-pull
+ 			 * the line high for some time.
+ 			 */
+-			gpiod_set_raw_value(pdata->gpiod, 1);
++			gpiod_direction_output_raw(pdata->gpiod, 1);
+ 			msleep(pdata->pullup_duration);
+ 			/*
+ 			 * This will simply set the line as input since we are doing
diff --git a/target/linux/bcm27xx/patches-5.15/950-0140-arm-bcm2835-Fix-FIQ-early-ioremap.patch b/target/linux/bcm27xx/patches-5.15/950-0140-arm-bcm2835-Fix-FIQ-early-ioremap.patch
new file mode 100644
index 0000000000..3332a6badb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0140-arm-bcm2835-Fix-FIQ-early-ioremap.patch
@@ -0,0 +1,73 @@
+From d9deb3700dd28463c329494f76870c6784e50309 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 20 Feb 2019 08:49:39 +0000
+Subject: [PATCH] arm: bcm2835: Fix FIQ early ioremap
+
+The ioremapping creates mappings within the vmalloc area. The
+equivalent early function, create_mapping, now checks that the
+requested explicit virtual address is between VMALLOC_START and
+VMALLOC_END. As there is no reason to have any correlation between
+the physical and virtual addresses, put the required mappings at
+VMALLOC_START and above.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 21 +++++++++++++++------
+ 1 file changed, 15 insertions(+), 6 deletions(-)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -5,17 +5,20 @@
+ 
+ #include <linux/init.h>
+ #include <linux/irqchip.h>
++#include <linux/mm.h>
+ #include <linux/of_address.h>
+ #include <linux/of_fdt.h>
+ #include <asm/system_info.h>
+ 
+ #include <asm/mach/arch.h>
+ #include <asm/mach/map.h>
++#include <asm/memory.h>
++#include <asm/pgtable.h>
+ 
+ #include "platsmp.h"
+ 
+-#define BCM2835_USB_VIRT_BASE   0xf0980000
+-#define BCM2835_USB_VIRT_MPHI   0xf0006000
++#define BCM2835_USB_VIRT_BASE   (VMALLOC_START)
++#define BCM2835_USB_VIRT_MPHI   (VMALLOC_START + 0x10000)
+ 
+ static void __init bcm2835_init(void)
+ {
+@@ -74,20 +77,26 @@ static int __init bcm2835_map_usb(unsign
+ 
+ static void __init bcm2835_map_io(void)
+ {
+-	const __be32 *ranges;
++	const __be32 *ranges, *address_cells;
++	unsigned long root, addr_cells;
+ 	int soc, len;
+ 	unsigned long p2b_offset;
+ 
+ 	debug_ll_io_init();
+ 
++	root = of_get_flat_dt_root();
+ 	/* Find out how to map bus to physical address first from soc/ranges */
+-	soc = of_get_flat_dt_subnode_by_name(of_get_flat_dt_root(), "soc");
++	soc = of_get_flat_dt_subnode_by_name(root, "soc");
+ 	if (soc < 0)
+ 		return;
++	address_cells = of_get_flat_dt_prop(root, "#address-cells", &len);
++	if (!address_cells || len < (sizeof(unsigned long)))
++		return;
++	addr_cells = be32_to_cpu(address_cells[0]);
+ 	ranges = of_get_flat_dt_prop(soc, "ranges", &len);
+-	if (!ranges || len < (sizeof(unsigned long) * 3))
++	if (!ranges || len < (sizeof(unsigned long) * (2 + addr_cells)))
+ 		return;
+-	p2b_offset = be32_to_cpu(ranges[0]) - be32_to_cpu(ranges[1]);
++	p2b_offset = be32_to_cpu(ranges[0]) - be32_to_cpu(ranges[addr_cells]);
+ 
+ 	/* Now search for bcm2708-usb node in device tree */
+ 	of_scan_flat_dt(bcm2835_map_usb, &p2b_offset);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch b/target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch
new file mode 100644
index 0000000000..585393989b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0141-arm-bcm2835-DMA-can-only-address-1GB.patch
@@ -0,0 +1,25 @@
+From 6808d6ad11225c29e18e71d92916e65bfd8db99d Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 29 May 2019 15:47:42 +0100
+Subject: [PATCH] arm: bcm2835: DMA can only address 1GB
+
+The legacy peripherals can only address the first gigabyte of RAM, so
+ensure that DMA allocations are restricted to that region.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -114,6 +114,9 @@ static const char * const bcm2835_compat
+ };
+ 
+ DT_MACHINE_START(BCM2835, "BCM2835")
++#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
++	.dma_zone_size	= SZ_1G,
++#endif
+ 	.map_io = bcm2835_map_io,
+ 	.init_machine = bcm2835_init,
+ 	.dt_compat = bcm2835_compat,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0142-hwrng-iproc-rng200-Add-BCM2838-support.patch b/target/linux/bcm27xx/patches-5.15/950-0142-hwrng-iproc-rng200-Add-BCM2838-support.patch
new file mode 100644
index 0000000000..ff5e62209a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0142-hwrng-iproc-rng200-Add-BCM2838-support.patch
@@ -0,0 +1,153 @@
+From bf3dee93bea871d5b8c714b877b9db7b27ab73b2 Mon Sep 17 00:00:00 2001
+From: Stefan Wahren <wahrenst@gmx.net>
+Date: Sat, 4 May 2019 17:06:15 +0200
+Subject: [PATCH] hwrng: iproc-rng200: Add BCM2838 support
+
+The HWRNG on the BCM2838 is compatible to iproc-rng200, so add the
+support to this driver instead of bcm2835-rng.
+
+Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
+
+hwrng: iproc-rng200: Correct SoC name
+
+The Pi 4 SoC is called BCM2711, not BCM2838.
+
+Fixes: "hwrng: iproc-rng200: Add BCM2838 support"
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/char/hw_random/Kconfig        |  2 +-
+ drivers/char/hw_random/iproc-rng200.c | 78 +++++++++++++++++++++++++--
+ 2 files changed, 76 insertions(+), 4 deletions(-)
+
+--- a/drivers/char/hw_random/Kconfig
++++ b/drivers/char/hw_random/Kconfig
+@@ -104,7 +104,7 @@ config HW_RANDOM_IPROC_RNG200
+ 	default HW_RANDOM
+ 	help
+ 	  This driver provides kernel-side support for the RNG200
+-	  hardware found on the Broadcom iProc and STB SoCs.
++	  hardware found on the Broadcom iProc, BCM2711 and STB SoCs.
+ 
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called iproc-rng200
+--- a/drivers/char/hw_random/iproc-rng200.c
++++ b/drivers/char/hw_random/iproc-rng200.c
+@@ -28,6 +28,7 @@
+ #define RNG_CTRL_OFFSET					0x00
+ #define RNG_CTRL_RNG_RBGEN_MASK				0x00001FFF
+ #define RNG_CTRL_RNG_RBGEN_ENABLE			0x00000001
++#define RNG_CTRL_RNG_DIV_CTRL_SHIFT			13
+ 
+ #define RNG_SOFT_RESET_OFFSET				0x04
+ #define RNG_SOFT_RESET					0x00000001
+@@ -35,16 +36,23 @@
+ #define RBG_SOFT_RESET_OFFSET				0x08
+ #define RBG_SOFT_RESET					0x00000001
+ 
++#define RNG_TOTAL_BIT_COUNT_OFFSET			0x0C
++
++#define RNG_TOTAL_BIT_COUNT_THRESHOLD_OFFSET		0x10
++
+ #define RNG_INT_STATUS_OFFSET				0x18
+ #define RNG_INT_STATUS_MASTER_FAIL_LOCKOUT_IRQ_MASK	0x80000000
+ #define RNG_INT_STATUS_STARTUP_TRANSITIONS_MET_IRQ_MASK	0x00020000
+ #define RNG_INT_STATUS_NIST_FAIL_IRQ_MASK		0x00000020
+ #define RNG_INT_STATUS_TOTAL_BITS_COUNT_IRQ_MASK	0x00000001
+ 
++#define RNG_INT_ENABLE_OFFSET				0x1C
++
+ #define RNG_FIFO_DATA_OFFSET				0x20
+ 
+ #define RNG_FIFO_COUNT_OFFSET				0x24
+ #define RNG_FIFO_COUNT_RNG_FIFO_COUNT_MASK		0x000000FF
++#define RNG_FIFO_COUNT_RNG_FIFO_THRESHOLD_SHIFT		8
+ 
+ struct iproc_rng200_dev {
+ 	struct hwrng rng;
+@@ -165,6 +173,64 @@ static int iproc_rng200_init(struct hwrn
+ 	return 0;
+ }
+ 
++static int bcm2711_rng200_read(struct hwrng *rng, void *buf, size_t max,
++			       bool wait)
++{
++	struct iproc_rng200_dev *priv = to_rng_priv(rng);
++	u32 max_words = max / sizeof(u32);
++	u32 num_words, count, val;
++
++	/* ensure warm up period has elapsed */
++	while (1) {
++		val = ioread32(priv->base + RNG_TOTAL_BIT_COUNT_OFFSET);
++		if (val > 16)
++			break;
++		cpu_relax();
++	}
++
++	/* ensure fifo is not empty */
++	while (1) {
++		num_words = ioread32(priv->base + RNG_FIFO_COUNT_OFFSET) &
++			    RNG_FIFO_COUNT_RNG_FIFO_COUNT_MASK;
++		if (num_words)
++			break;
++		if (!wait)
++			return 0;
++		cpu_relax();
++	}
++
++	if (num_words > max_words)
++		num_words = max_words;
++
++	for (count = 0; count < num_words; count++) {
++		((u32 *)buf)[count] = ioread32(priv->base +
++					       RNG_FIFO_DATA_OFFSET);
++	}
++
++	return num_words * sizeof(u32);
++}
++
++static int bcm2711_rng200_init(struct hwrng *rng)
++{
++	struct iproc_rng200_dev *priv = to_rng_priv(rng);
++	uint32_t val;
++
++	if (ioread32(priv->base + RNG_CTRL_OFFSET) & RNG_CTRL_RNG_RBGEN_MASK)
++		return 0;
++
++	/* initial numbers generated are "less random" so will be discarded */
++	val = 0x40000;
++	iowrite32(val, priv->base + RNG_TOTAL_BIT_COUNT_THRESHOLD_OFFSET);
++	/* min fifo count to generate full interrupt */
++	val = 2 << RNG_FIFO_COUNT_RNG_FIFO_THRESHOLD_SHIFT;
++	iowrite32(val, priv->base + RNG_FIFO_COUNT_OFFSET);
++	/* enable the rng - 1Mhz sample rate */
++	val = (0x3 << RNG_CTRL_RNG_DIV_CTRL_SHIFT) | RNG_CTRL_RNG_RBGEN_MASK;
++	iowrite32(val, priv->base + RNG_CTRL_OFFSET);
++
++	return 0;
++}
++
+ static void iproc_rng200_cleanup(struct hwrng *rng)
+ {
+ 	struct iproc_rng200_dev *priv = to_rng_priv(rng);
+@@ -189,11 +255,17 @@ static int iproc_rng200_probe(struct pla
+ 		return PTR_ERR(priv->base);
+ 	}
+ 
+-	priv->rng.name = "iproc-rng200";
+-	priv->rng.read = iproc_rng200_read;
+-	priv->rng.init = iproc_rng200_init;
++	priv->rng.name = pdev->name;
+ 	priv->rng.cleanup = iproc_rng200_cleanup;
+ 
++	if (of_device_is_compatible(dev->of_node, "brcm,bcm2711-rng200")) {
++		priv->rng.init = bcm2711_rng200_init;
++		priv->rng.read = bcm2711_rng200_read;
++	} else {
++		priv->rng.init = iproc_rng200_init;
++		priv->rng.read = iproc_rng200_read;
++	}
++
+ 	/* Register driver */
+ 	ret = devm_hwrng_register(dev, &priv->rng);
+ 	if (ret) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0143-bcmgenet-constrain-max-DMA-burst-length.patch b/target/linux/bcm27xx/patches-5.15/950-0143-bcmgenet-constrain-max-DMA-burst-length.patch
new file mode 100644
index 0000000000..1f5281c9b8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0143-bcmgenet-constrain-max-DMA-burst-length.patch
@@ -0,0 +1,20 @@
+From 4008fd7b317407c3d532f2e9e8ed86b4cb27b2ae Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Wed, 12 Sep 2018 14:44:53 +0100
+Subject: [PATCH] bcmgenet: constrain max DMA burst length
+
+---
+ drivers/net/ethernet/broadcom/genet/bcmgenet.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+@@ -31,7 +31,7 @@
+ #define ENET_PAD		8
+ #define ENET_MAX_MTU_SIZE	(ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
+ 				 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)
+-#define DMA_MAX_BURST_LENGTH    0x10
++#define DMA_MAX_BURST_LENGTH    0x08
+ 
+ /* misc. configuration */
+ #define MAX_NUM_OF_FS_RULES		16
diff --git a/target/linux/bcm27xx/patches-5.15/950-0144-bcmgenet-Better-coalescing-parameter-defaults.patch b/target/linux/bcm27xx/patches-5.15/950-0144-bcmgenet-Better-coalescing-parameter-defaults.patch
new file mode 100644
index 0000000000..462f8a8e5a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0144-bcmgenet-Better-coalescing-parameter-defaults.patch
@@ -0,0 +1,43 @@
+From 78f2fd6521093df3e5e9bf844b4b566571570c06 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 27 Mar 2019 13:45:46 +0000
+Subject: [PATCH] bcmgenet: Better coalescing parameter defaults
+
+Set defaults for TX and RX packet coalescing to be equivalent to:
+
+  # ethtool -C eth0 tx-frames 10
+  # ethtool -C eth0 rx-usecs 50
+
+This may be something we want to set via DT parameters in the
+future.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/ethernet/broadcom/genet/bcmgenet.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -2608,7 +2608,7 @@ static void bcmgenet_init_tx_ring(struct
+ 
+ 	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_PROD_INDEX);
+ 	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_CONS_INDEX);
+-	bcmgenet_tdma_ring_writel(priv, index, 1, DMA_MBUF_DONE_THRESH);
++	bcmgenet_tdma_ring_writel(priv, index, 10, DMA_MBUF_DONE_THRESH);
+ 	/* Disable rate control for now */
+ 	bcmgenet_tdma_ring_writel(priv, index, flow_period_val,
+ 				  TDMA_FLOW_PERIOD);
+@@ -4071,9 +4071,12 @@ static int bcmgenet_probe(struct platfor
+ 	netif_set_real_num_rx_queues(priv->dev, priv->hw_params->rx_queues + 1);
+ 
+ 	/* Set default coalescing parameters */
+-	for (i = 0; i < priv->hw_params->rx_queues; i++)
++	for (i = 0; i < priv->hw_params->rx_queues; i++) {
+ 		priv->rx_rings[i].rx_max_coalesced_frames = 1;
++		priv->rx_rings[i].rx_coalesce_usecs = 50;
++	}
+ 	priv->rx_rings[DESC_INDEX].rx_max_coalesced_frames = 1;
++	priv->rx_rings[DESC_INDEX].rx_coalesce_usecs = 50;
+ 
+ 	/* libphy will determine the link state */
+ 	netif_carrier_off(dev);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0145-net-genet-enable-link-energy-detect-powerdown-for-ex.patch b/target/linux/bcm27xx/patches-5.15/950-0145-net-genet-enable-link-energy-detect-powerdown-for-ex.patch
new file mode 100644
index 0000000000..f817fbc2b2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0145-net-genet-enable-link-energy-detect-powerdown-for-ex.patch
@@ -0,0 +1,31 @@
+From d63ea0cc6bfa438fd1a3ef7c336a3418e2b7b22b Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Tue, 14 May 2019 17:17:59 +0100
+Subject: [PATCH] net: genet: enable link energy detect powerdown for
+ external PHYs
+
+There are several warts surrounding bcmgenet_mii_probe() as this
+function is called from ndo_open, but it's calling registration-type
+functions. The probe should be called at probe time and refactored
+such that the PHY device data can be extracted to limit the scope
+of this flag to Broadcom PHYs.
+
+For now, pass this flag in as it puts our attached PHY into a low-power
+state when disconnected.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/net/ethernet/broadcom/genet/bcmmii.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
+@@ -293,6 +293,8 @@ int bcmgenet_mii_probe(struct net_device
+ 	/* Communicate the integrated PHY revision */
+ 	if (priv->internal_phy)
+ 		phy_flags = priv->gphy_rev;
++	else
++		phy_flags = PHY_BRCM_AUTO_PWRDWN_ENABLE;
+ 
+ 	/* Initialize link state variables that bcmgenet_mii_setup() uses */
+ 	priv->old_link = -1;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0146-spi-bcm2835-enable-shared-interrupt-support.patch b/target/linux/bcm27xx/patches-5.15/950-0146-spi-bcm2835-enable-shared-interrupt-support.patch
new file mode 100644
index 0000000000..2aca884b36
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0146-spi-bcm2835-enable-shared-interrupt-support.patch
@@ -0,0 +1,35 @@
+From 81a2bf6bf59e24bac2c9bc6b4a76ecea74d80a11 Mon Sep 17 00:00:00 2001
+From: Martin Sperl <kernel@martin.sperl.org>
+Date: Mon, 13 May 2019 11:05:27 +0000
+Subject: [PATCH] spi: bcm2835: enable shared interrupt support
+
+Add shared interrupt support for this driver.
+
+Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
+---
+ drivers/spi/spi-bcm2835.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+--- a/drivers/spi/spi-bcm2835.c
++++ b/drivers/spi/spi-bcm2835.c
+@@ -384,6 +384,10 @@ static irqreturn_t bcm2835_spi_interrupt
+ 	if (bs->tx_len && cs & BCM2835_SPI_CS_DONE)
+ 		bcm2835_wr_fifo_blind(bs, BCM2835_SPI_FIFO_SIZE);
+ 
++	/* check if we got interrupt enabled */
++	if (!(bcm2835_rd(bs, BCM2835_SPI_CS) & BCM2835_SPI_CS_INTR))
++		return IRQ_NONE;
++
+ 	/* Read as many bytes as possible from FIFO */
+ 	bcm2835_rd_fifo(bs);
+ 	/* Write as many bytes as possible to FIFO */
+@@ -1365,7 +1369,8 @@ static int bcm2835_spi_probe(struct plat
+ 	bcm2835_wr(bs, BCM2835_SPI_CS,
+ 		   BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX);
+ 
+-	err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt, 0,
++	err = devm_request_irq(&pdev->dev, bs->irq, bcm2835_spi_interrupt,
++			       IRQF_SHARED,
+ 			       dev_name(&pdev->dev), bs);
+ 	if (err) {
+ 		dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0147-clk-bcm2835-Don-t-wait-for-pllh-lock.patch b/target/linux/bcm27xx/patches-5.15/950-0147-clk-bcm2835-Don-t-wait-for-pllh-lock.patch
new file mode 100644
index 0000000000..7ee8aa7cbb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0147-clk-bcm2835-Don-t-wait-for-pllh-lock.patch
@@ -0,0 +1,38 @@
+From 861cb6421fd74f6b4ead58103e6aba6f938f74f3 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 23 Jan 2019 16:11:50 +0000
+Subject: [PATCH] clk-bcm2835: Don't wait for pllh lock
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 18 ++++++++++--------
+ 1 file changed, 10 insertions(+), 8 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -644,15 +644,17 @@ static int bcm2835_pll_on(struct clk_hw
+ 	spin_unlock(&cprman->regs_lock);
+ 
+ 	/* Wait for the PLL to lock. */
+-	timeout = ktime_add_ns(ktime_get(), LOCK_TIMEOUT_NS);
+-	while (!(cprman_read(cprman, CM_LOCK) & data->lock_mask)) {
+-		if (ktime_after(ktime_get(), timeout)) {
+-			dev_err(cprman->dev, "%s: couldn't lock PLL\n",
+-				clk_hw_get_name(hw));
+-			return -ETIMEDOUT;
+-		}
++	if (strcmp(data->name, "pllh")) {
++		timeout = ktime_add_ns(ktime_get(), LOCK_TIMEOUT_NS);
++		while (!(cprman_read(cprman, CM_LOCK) & data->lock_mask)) {
++			if (ktime_after(ktime_get(), timeout)) {
++				dev_err(cprman->dev, "%s: couldn't lock PLL\n",
++					clk_hw_get_name(hw));
++				return -ETIMEDOUT;
++			}
+ 
+-		cpu_relax();
++			cpu_relax();
++		}
+ 	}
+ 
+ 	cprman_write(cprman, data->a2w_ctrl_reg,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0148-soc-bcm-bcm2835-pm-Add-support-for-2711.patch b/target/linux/bcm27xx/patches-5.15/950-0148-soc-bcm-bcm2835-pm-Add-support-for-2711.patch
new file mode 100644
index 0000000000..fd006e59a1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0148-soc-bcm-bcm2835-pm-Add-support-for-2711.patch
@@ -0,0 +1,102 @@
+From 9c20d47206de1b7ac78c8186dbb717751100eac6 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Fri, 11 Jan 2019 17:31:07 -0800
+Subject: [PATCH] soc: bcm: bcm2835-pm: Add support for 2711.
+
+Without the actual power management part any more, there's a lot less
+to set up for V3D.  We just need to clear the RSTN field for the power
+domain, and expose the reset controller for toggling it again.
+
+This is definitely incomplete -- the old ISP and H264 is in the old
+bridge, but since we have no consumers of it I've just done the
+minimum to get V3D working.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/mfd/bcm2835-pm.c        | 11 +++++++++++
+ drivers/soc/bcm/bcm2835-power.c | 22 ++++++++++++++++++++++
+ include/linux/mfd/bcm2835-pm.h  |  1 +
+ 3 files changed, 34 insertions(+)
+
+--- a/drivers/mfd/bcm2835-pm.c
++++ b/drivers/mfd/bcm2835-pm.c
+@@ -50,6 +50,17 @@ static int bcm2835_pm_probe(struct platf
+ 	if (ret)
+ 		return ret;
+ 
++	/* Map the ARGON ASB regs if present. */
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
++	if (res) {
++		pm->arg_asb = devm_ioremap_resource(dev, res);
++		if (IS_ERR(pm->arg_asb)) {
++			dev_err(dev, "Failed to map ARGON ASB: %ld\n",
++				PTR_ERR(pm->arg_asb));
++			return PTR_ERR(pm->arg_asb);
++		}
++	}
++
+ 	/* We'll use the presence of the AXI ASB regs in the
+ 	 * bcm2835-pm binding as the key for whether we can reference
+ 	 * the full PM register range and support power domains.
+--- a/drivers/soc/bcm/bcm2835-power.c
++++ b/drivers/soc/bcm/bcm2835-power.c
+@@ -143,6 +143,8 @@ struct bcm2835_power {
+ 	/* AXI Async bridge registers. */
+ 	void __iomem		*asb;
+ 
++	bool is_2711;
++
+ 	struct genpd_onecell_data pd_xlate;
+ 	struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
+ 	struct reset_controller_dev reset;
+@@ -192,6 +194,10 @@ static int bcm2835_power_power_off(struc
+ {
+ 	struct bcm2835_power *power = pd->power;
+ 
++	/* 2711 has no power domains above the reset controller. */
++	if (power->is_2711)
++		return 0;
++
+ 	/* Enable functional isolation */
+ 	PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISFUNC);
+ 
+@@ -213,6 +219,10 @@ static int bcm2835_power_power_on(struct
+ 	int inrush;
+ 	bool powok;
+ 
++	/* 2711 has no power domains above the reset controller. */
++	if (power->is_2711)
++		return 0;
++
+ 	/* If it was already powered on by the fw, leave it that way. */
+ 	if (PM_READ(pm_reg) & PM_POWUP)
+ 		return 0;
+@@ -627,6 +637,18 @@ static int bcm2835_power_probe(struct pl
+ 	power->base = pm->base;
+ 	power->asb = pm->asb;
+ 
++	/* 2711 hack: the new ARGON ASB took over V3D, which is our
++	 * only consumer of this driver so far.  The old ASB seems to
++	 * still be present with ISP and H264 bits but no V3D, but I
++	 * don't know if that's real or not.  The V3D is in the same
++	 * place in the new ASB as the old one, so just poke the new
++	 * one for now.
++	 */
++	if (pm->arg_asb) {
++		power->asb = pm->arg_asb;
++		power->is_2711 = true;
++	}
++
+ 	id = ASB_READ(ASB_AXI_BRDG_ID);
+ 	if (id != 0x62726467 /* "BRDG" */) {
+ 		dev_err(dev, "ASB register ID returned 0x%08x\n", id);
+--- a/include/linux/mfd/bcm2835-pm.h
++++ b/include/linux/mfd/bcm2835-pm.h
+@@ -9,6 +9,7 @@ struct bcm2835_pm {
+ 	struct device *dev;
+ 	void __iomem *base;
+ 	void __iomem *asb;
++	void __iomem *arg_asb;
+ };
+ 
+ #endif /* BCM2835_MFD_PM_H */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0149-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch b/target/linux/bcm27xx/patches-5.15/950-0149-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch
new file mode 100644
index 0000000000..f35ca3f3a8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0149-clk-bcm2835-Add-support-for-setting-leaf-clock-rates.patch
@@ -0,0 +1,53 @@
+From ba8242ab300638e8f6e46fe1596c5ee86c71b27d Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Thu, 2 May 2019 15:11:05 -0700
+Subject: [PATCH] clk: bcm2835: Add support for setting leaf clock
+ rates while running.
+
+As long as you wait for !BUSY, you can do glitch-free updates of clock
+rate while the clock is running.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 22 +++++++++++++---------
+ 1 file changed, 13 insertions(+), 9 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -1109,15 +1109,19 @@ static int bcm2835_clock_set_rate(struct
+ 
+ 	spin_lock(&cprman->regs_lock);
+ 
+-	/*
+-	 * Setting up frac support
+-	 *
+-	 * In principle it is recommended to stop/start the clock first,
+-	 * but as we set CLK_SET_RATE_GATE during registration of the
+-	 * clock this requirement should be take care of by the
+-	 * clk-framework.
++	ctl = cprman_read(cprman, data->ctl_reg);
++
++	/* If the clock is running, we have to pause clock generation while
++	 * updating the control and div regs.  This is glitchless (no clock
++	 * signals generated faster than the rate) but each reg access is two
++	 * OSC cycles so the clock will slow down for a moment.
+ 	 */
+-	ctl = cprman_read(cprman, data->ctl_reg) & ~CM_FRAC;
++	if (ctl & CM_ENABLE) {
++		cprman_write(cprman, data->ctl_reg, ctl & ~CM_ENABLE);
++		bcm2835_clock_wait_busy(clock);
++	}
++
++	ctl &= ~CM_FRAC;
+ 	ctl |= (div & CM_DIV_FRAC_MASK) ? CM_FRAC : 0;
+ 	cprman_write(cprman, data->ctl_reg, ctl);
+ 
+@@ -1493,7 +1497,7 @@ static struct clk_hw *bcm2835_register_c
+ 		init.ops = &bcm2835_vpu_clock_clk_ops;
+ 	} else {
+ 		init.ops = &bcm2835_clock_clk_ops;
+-		init.flags |= CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE;
++		init.flags |= CLK_SET_PARENT_GATE;
+ 
+ 		/* If the clock wasn't actually enabled at boot, it's not
+ 		 * critical.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0150-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch b/target/linux/bcm27xx/patches-5.15/950-0150-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch
new file mode 100644
index 0000000000..4caf953ced
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0150-clk-bcm2835-Allow-reparenting-leaf-clocks-while-they.patch
@@ -0,0 +1,71 @@
+From d80ceb5175ec4b5d18bcdd571ef2d51c3d24b749 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Thu, 2 May 2019 15:24:04 -0700
+Subject: [PATCH] clk: bcm2835: Allow reparenting leaf clocks while
+ they're running.
+
+This falls under the same "we can reprogram glitch-free as long as we
+pause generation" rule as updating the div/frac fields.  This can be
+used for runtime reclocking of V3D to manage power leakage.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 19 ++++++++++++++++---
+ 1 file changed, 16 insertions(+), 3 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -1098,8 +1098,10 @@ static int bcm2835_clock_on(struct clk_h
+ 	return 0;
+ }
+ 
+-static int bcm2835_clock_set_rate(struct clk_hw *hw,
+-				  unsigned long rate, unsigned long parent_rate)
++static int bcm2835_clock_set_rate_and_parent(struct clk_hw *hw,
++					     unsigned long rate,
++					     unsigned long parent_rate,
++					     u8 parent)
+ {
+ 	struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw);
+ 	struct bcm2835_cprman *cprman = clock->cprman;
+@@ -1121,6 +1123,11 @@ static int bcm2835_clock_set_rate(struct
+ 		bcm2835_clock_wait_busy(clock);
+ 	}
+ 
++	if (parent != 0xff) {
++		ctl &= ~(CM_SRC_MASK << CM_SRC_SHIFT);
++		ctl |= parent << CM_SRC_SHIFT;
++	}
++
+ 	ctl &= ~CM_FRAC;
+ 	ctl |= (div & CM_DIV_FRAC_MASK) ? CM_FRAC : 0;
+ 	cprman_write(cprman, data->ctl_reg, ctl);
+@@ -1132,6 +1139,12 @@ static int bcm2835_clock_set_rate(struct
+ 	return 0;
+ }
+ 
++static int bcm2835_clock_set_rate(struct clk_hw *hw,
++				  unsigned long rate, unsigned long parent_rate)
++{
++	return bcm2835_clock_set_rate_and_parent(hw, rate, parent_rate, 0xff);
++}
++
+ static bool
+ bcm2835_clk_is_pllc(struct clk_hw *hw)
+ {
+@@ -1315,6 +1328,7 @@ static const struct clk_ops bcm2835_cloc
+ 	.unprepare = bcm2835_clock_off,
+ 	.recalc_rate = bcm2835_clock_get_rate,
+ 	.set_rate = bcm2835_clock_set_rate,
++	.set_rate_and_parent = bcm2835_clock_set_rate_and_parent,
+ 	.determine_rate = bcm2835_clock_determine_rate,
+ 	.set_parent = bcm2835_clock_set_parent,
+ 	.get_parent = bcm2835_clock_get_parent,
+@@ -1497,7 +1511,6 @@ static struct clk_hw *bcm2835_register_c
+ 		init.ops = &bcm2835_vpu_clock_clk_ops;
+ 	} else {
+ 		init.ops = &bcm2835_clock_clk_ops;
+-		init.flags |= CLK_SET_PARENT_GATE;
+ 
+ 		/* If the clock wasn't actually enabled at boot, it's not
+ 		 * critical.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0151-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch b/target/linux/bcm27xx/patches-5.15/950-0151-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch
new file mode 100644
index 0000000000..0dcf0cab91
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0151-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch
@@ -0,0 +1,104 @@
+From 705c0644daa080527dca92eb3509b8a93e9a553a Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Tue, 11 Jun 2019 10:55:00 +0100
+Subject: [PATCH] usb: add plumbing for updating interrupt endpoint
+ interval state
+
+xHCI caches device and endpoint data after the interface is configured,
+so an explicit command needs to be issued for any device driver wanting
+to alter the polling interval of an endpoint.
+
+Add usb_fixup_endpoint() to allow drivers to do this. The fixup must be
+called after calculating endpoint bandwidth requirements but before any
+URBs are submitted.
+
+If polling intervals are shortened, any bandwidth reservations are no
+longer valid but in practice polling intervals are only ever relaxed.
+
+Limit the scope to interrupt transfers for now.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/usb/core/hcd.c     | 10 ++++++++++
+ drivers/usb/core/message.c | 15 +++++++++++++++
+ include/linux/usb.h        |  2 ++
+ include/linux/usb/hcd.h    |  7 +++++++
+ 4 files changed, 34 insertions(+)
+
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -1969,6 +1969,16 @@ reset:
+ 	return ret;
+ }
+ 
++void usb_hcd_fixup_endpoint(struct usb_device *udev,
++			    struct usb_host_endpoint *ep, int interval)
++{
++	struct usb_hcd *hcd;
++
++	hcd = bus_to_hcd(udev->bus);
++	if (hcd->driver->fixup_endpoint)
++		hcd->driver->fixup_endpoint(hcd, udev, ep, interval);
++}
++
+ /* Disables the endpoint: synchronizes with the hcd to make sure all
+  * endpoint state is gone from hardware.  usb_hcd_flush_endpoint() must
+  * have been called previously.  Use for set_configuration, set_interface,
+--- a/drivers/usb/core/message.c
++++ b/drivers/usb/core/message.c
+@@ -1268,6 +1268,21 @@ static void remove_intf_ep_devs(struct u
+ 	intf->ep_devs_created = 0;
+ }
+ 
++void usb_fixup_endpoint(struct usb_device *dev, int epaddr, int interval)
++{
++	unsigned int epnum = epaddr & USB_ENDPOINT_NUMBER_MASK;
++	struct usb_host_endpoint *ep;
++
++	if (usb_endpoint_out(epaddr))
++		ep = dev->ep_out[epnum];
++	else
++		ep = dev->ep_in[epnum];
++
++	if (ep && usb_endpoint_xfer_int(&ep->desc))
++		usb_hcd_fixup_endpoint(dev, ep, interval);
++}
++EXPORT_SYMBOL_GPL(usb_fixup_endpoint);
++
+ /**
+  * usb_disable_endpoint -- Disable an endpoint by address
+  * @dev: the device whose endpoint is being disabled
+--- a/include/linux/usb.h
++++ b/include/linux/usb.h
+@@ -1840,6 +1840,8 @@ extern int usb_clear_halt(struct usb_dev
+ extern int usb_reset_configuration(struct usb_device *dev);
+ extern int usb_set_interface(struct usb_device *dev, int ifnum, int alternate);
+ extern void usb_reset_endpoint(struct usb_device *dev, unsigned int epaddr);
++extern void usb_fixup_endpoint(struct usb_device *dev, int epaddr,
++			       int interval);
+ 
+ /* this request isn't really synchronous, but it belongs with the others */
+ extern int usb_driver_set_configuration(struct usb_device *udev, int config);
+--- a/include/linux/usb/hcd.h
++++ b/include/linux/usb/hcd.h
+@@ -382,6 +382,11 @@ struct hc_driver {
+ 		 * or bandwidth constraints.
+ 		 */
+ 	void	(*reset_bandwidth)(struct usb_hcd *, struct usb_device *);
++		/* Override the endpoint-derived interval
++		 * (if there is any cached hardware state).
++		 */
++	void	(*fixup_endpoint)(struct usb_hcd *hcd, struct usb_device *udev,
++				  struct usb_host_endpoint *ep, int interval);
+ 		/* Returns the hardware-chosen device address */
+ 	int	(*address_device)(struct usb_hcd *, struct usb_device *udev);
+ 		/* prepares the hardware to send commands to the device */
+@@ -446,6 +451,8 @@ extern void usb_hcd_unmap_urb_setup_for_
+ extern void usb_hcd_unmap_urb_for_dma(struct usb_hcd *, struct urb *);
+ extern void usb_hcd_flush_endpoint(struct usb_device *udev,
+ 		struct usb_host_endpoint *ep);
++extern void usb_hcd_fixup_endpoint(struct usb_device *udev,
++		struct usb_host_endpoint *ep, int interval);
+ extern void usb_hcd_disable_endpoint(struct usb_device *udev,
+ 		struct usb_host_endpoint *ep);
+ extern void usb_hcd_reset_endpoint(struct usb_device *udev,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0152-xhci-implement-xhci_fixup_endpoint-for-interval-adju.patch b/target/linux/bcm27xx/patches-5.15/950-0152-xhci-implement-xhci_fixup_endpoint-for-interval-adju.patch
new file mode 100644
index 0000000000..b8f925fc97
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0152-xhci-implement-xhci_fixup_endpoint-for-interval-adju.patch
@@ -0,0 +1,135 @@
+From e9263b01e122059a6a8ba1aeed8ed7a56cf80028 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Tue, 11 Jun 2019 11:33:39 +0100
+Subject: [PATCH] xhci: implement xhci_fixup_endpoint for interval
+ adjustments
+
+Must be called in a non-atomic context, after the endpoint
+has been registered with the hardware via xhci_add_endpoint
+and before the first URB is submitted for the endpoint.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/usb/host/xhci.c | 104 ++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 104 insertions(+)
+
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -1607,6 +1607,109 @@ command_cleanup:
+ }
+ 
+ /*
++ * RPI: Fixup endpoint intervals when requested
++ * - Check interval versus the (cached) endpoint context
++ * - set the endpoint interval to the new value
++ * - force an endpoint configure command
++ * XXX: bandwidth is not recalculated. We should probably do that.
++ */
++
++static unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index)
++{
++	return 1 << (ep_index + 1);
++}
++
++static void xhci_fixup_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
++				struct usb_host_endpoint *ep, int interval)
++{
++	struct xhci_hcd *xhci;
++	struct xhci_ep_ctx *ep_ctx_out, *ep_ctx_in;
++	struct xhci_command *command;
++	struct xhci_input_control_ctx *ctrl_ctx;
++	struct xhci_virt_device *vdev;
++	int xhci_interval;
++	int ret;
++	int ep_index;
++	unsigned long flags;
++	u32 ep_info_tmp;
++
++	xhci = hcd_to_xhci(hcd);
++	ep_index = xhci_get_endpoint_index(&ep->desc);
++
++	/* FS/LS interval translations */
++	if ((udev->speed == USB_SPEED_FULL ||
++	     udev->speed == USB_SPEED_LOW))
++		interval *= 8;
++
++	mutex_lock(&xhci->mutex);
++
++	spin_lock_irqsave(&xhci->lock, flags);
++
++	vdev = xhci->devs[udev->slot_id];
++	/* Get context-derived endpoint interval */
++	ep_ctx_out = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index);
++	ep_ctx_in = xhci_get_ep_ctx(xhci, vdev->in_ctx, ep_index);
++	xhci_interval = EP_INTERVAL_TO_UFRAMES(le32_to_cpu(ep_ctx_out->ep_info));
++
++	if (interval == xhci_interval) {
++		spin_unlock_irqrestore(&xhci->lock, flags);
++		mutex_unlock(&xhci->mutex);
++		return;
++	}
++
++	xhci_dbg(xhci, "Fixup interval=%d xhci_interval=%d\n",
++		 interval, xhci_interval);
++	command = xhci_alloc_command_with_ctx(xhci, true, GFP_ATOMIC);
++	if (!command) {
++		/* Failure here is benign, poll at the original rate */
++		spin_unlock_irqrestore(&xhci->lock, flags);
++		mutex_unlock(&xhci->mutex);
++		return;
++	}
++
++	/* xHCI uses exponents for intervals... */
++	xhci_interval = fls(interval) - 1;
++	xhci_interval = clamp_val(xhci_interval, 3, 10);
++	ep_info_tmp = le32_to_cpu(ep_ctx_out->ep_info);
++	ep_info_tmp &= ~EP_INTERVAL(255);
++	ep_info_tmp |= EP_INTERVAL(xhci_interval);
++
++	/* Keep the endpoint context up-to-date while issuing the command. */
++	xhci_endpoint_copy(xhci, vdev->in_ctx,
++			   vdev->out_ctx, ep_index);
++	ep_ctx_in->ep_info = cpu_to_le32(ep_info_tmp);
++
++	/*
++	 * We need to drop the lock, so take an explicit copy
++	 * of the ep context.
++	 */
++	xhci_endpoint_copy(xhci, command->in_ctx, vdev->in_ctx, ep_index);
++
++	ctrl_ctx = xhci_get_input_control_ctx(command->in_ctx);
++	if (!ctrl_ctx) {
++		xhci_warn(xhci,
++			  "%s: Could not get input context, bad type.\n",
++			  __func__);
++		spin_unlock_irqrestore(&xhci->lock, flags);
++		xhci_free_command(xhci, command);
++		mutex_unlock(&xhci->mutex);
++		return;
++	}
++	ctrl_ctx->add_flags = xhci_get_endpoint_flag_from_index(ep_index);
++	ctrl_ctx->drop_flags = 0;
++
++	spin_unlock_irqrestore(&xhci->lock, flags);
++
++	ret = xhci_configure_endpoint(xhci, udev, command,
++				      false, false);
++	if (ret)
++		xhci_warn(xhci, "%s: Configure endpoint failed: %d\n",
++			  __func__, ret);
++	xhci_free_command(xhci, command);
++	mutex_unlock(&xhci->mutex);
++}
++
++/*
+  * non-error returns are a promise to giveback() the urb later
+  * we drop ownership so next owner (or urb unlink) can get it
+  */
+@@ -5432,6 +5535,7 @@ static const struct hc_driver xhci_hc_dr
+ 	.endpoint_reset =	xhci_endpoint_reset,
+ 	.check_bandwidth =	xhci_check_bandwidth,
+ 	.reset_bandwidth =	xhci_reset_bandwidth,
++	.fixup_endpoint =	xhci_fixup_endpoint,
+ 	.address_device =	xhci_address_device,
+ 	.enable_device =	xhci_enable_device,
+ 	.update_hub_device =	xhci_update_hub_device,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0153-usbhid-call-usb_fixup_endpoint-after-mangling-interv.patch b/target/linux/bcm27xx/patches-5.15/950-0153-usbhid-call-usb_fixup_endpoint-after-mangling-interv.patch
new file mode 100644
index 0000000000..c5cb532439
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0153-usbhid-call-usb_fixup_endpoint-after-mangling-interv.patch
@@ -0,0 +1,23 @@
+From 65628c99c350930ece2e317655d2a7ffce924e2b Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Tue, 11 Jun 2019 11:42:03 +0100
+Subject: [PATCH] usbhid: call usb_fixup_endpoint after mangling
+ intervals
+
+Lets the mousepoll override mechanism work with xhci.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/hid/usbhid/hid-core.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/hid/usbhid/hid-core.c
++++ b/drivers/hid/usbhid/hid-core.c
+@@ -1126,6 +1126,7 @@ static int usbhid_start(struct hid_devic
+ 				interval = hid_kbpoll_interval;
+ 			break;
+ 		}
++		usb_fixup_endpoint(dev, endpoint->bEndpointAddress, interval);
+ 
+ 		ret = -ENOMEM;
+ 		if (usb_endpoint_dir_in(endpoint)) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0154-arm-bcm2835-Add-bcm2838-compatible-string.patch b/target/linux/bcm27xx/patches-5.15/950-0154-arm-bcm2835-Add-bcm2838-compatible-string.patch
new file mode 100644
index 0000000000..12dcca0292
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0154-arm-bcm2835-Add-bcm2838-compatible-string.patch
@@ -0,0 +1,20 @@
+From ce64cb43689de1b54b95b28e37cb2179ae25129c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 11 Jun 2019 17:38:28 +0100
+Subject: [PATCH] arm: bcm2835: Add bcm2838 compatible string.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -109,6 +109,7 @@ static const char * const bcm2835_compat
+ #ifdef CONFIG_ARCH_MULTI_V7
+ 	"brcm,bcm2836",
+ 	"brcm,bcm2837",
++	"brcm,bcm2838",
+ #endif
+ 	NULL
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0155-drm-v3d-Add-support-for-2711.patch b/target/linux/bcm27xx/patches-5.15/950-0155-drm-v3d-Add-support-for-2711.patch
new file mode 100644
index 0000000000..4bc8cd03ed
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0155-drm-v3d-Add-support-for-2711.patch
@@ -0,0 +1,20 @@
+From c9c8772ef6ae86678a793d168129866bdc0a92cc Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Thu, 4 Oct 2018 17:22:43 -0700
+Subject: [PATCH] drm/v3d: Add support for 2711.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/gpu/drm/v3d/v3d_drv.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/v3d/v3d_drv.c
++++ b/drivers/gpu/drm/v3d/v3d_drv.c
+@@ -199,6 +199,7 @@ static const struct drm_driver v3d_drm_d
+ static const struct of_device_id v3d_of_match[] = {
+ 	{ .compatible = "brcm,7268-v3d" },
+ 	{ .compatible = "brcm,7278-v3d" },
++	{ .compatible = "brcm,2711-v3d" },
+ 	{},
+ };
+ MODULE_DEVICE_TABLE(of, v3d_of_match);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0156-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch b/target/linux/bcm27xx/patches-5.15/950-0156-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch
new file mode 100644
index 0000000000..166446959e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0156-drm-v3d-Skip-MMU-flush-if-the-device-is-currently-of.patch
@@ -0,0 +1,52 @@
+From 15d0d4bb7c817c3cbcdb276d911b9e93a0c825e9 Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Mon, 14 Jan 2019 12:35:43 -0800
+Subject: [PATCH] drm/v3d: Skip MMU flush if the device is currently
+ off.
+
+If it's off, we know it will be reset on poweron, so the MMU won't
+have any TLB cached from before this point.  Avoids failed waits for
+MMU flush to reply.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+(cherry picked from commit 3ee4e2e0a9e9587eacbb69b067bbc72ab2cdc47b)
+---
+ drivers/gpu/drm/v3d/v3d_mmu.c | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+--- a/drivers/gpu/drm/v3d/v3d_mmu.c
++++ b/drivers/gpu/drm/v3d/v3d_mmu.c
+@@ -18,6 +18,8 @@
+  * each client.  This is not yet implemented.
+  */
+ 
++#include <linux/pm_runtime.h>
++
+ #include "v3d_drv.h"
+ #include "v3d_regs.h"
+ 
+@@ -34,6 +36,14 @@ static int v3d_mmu_flush_all(struct v3d_
+ {
+ 	int ret;
+ 
++	/* Keep power on the device on until we're done with this
++	 * call, but skip the flush if the device is off and will be
++	 * reset when powered back on.
++	 */
++	ret = pm_runtime_get_if_in_use(v3d->dev);
++	if (ret == 0)
++		return 0;
++
+ 	/* Make sure that another flush isn't already running when we
+ 	 * start this one.
+ 	 */
+@@ -61,6 +71,9 @@ static int v3d_mmu_flush_all(struct v3d_
+ 	if (ret)
+ 		dev_err(v3d->drm.dev, "MMUC flush wait idle failed\n");
+ 
++	pm_runtime_mark_last_busy(v3d->dev);
++	pm_runtime_put_autosuspend(v3d->dev);
++
+ 	return ret;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch b/target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch
new file mode 100644
index 0000000000..1288680009
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch
@@ -0,0 +1,68 @@
+From 9d058ec3839e19637efc1957cdbbdafd69878acb Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Mon, 14 Jan 2019 14:47:57 -0800
+Subject: [PATCH] drm/v3d: Hook up the runtime PM ops.
+
+In translating the runtime PM code from vc4, I missed the ".pm"
+assignment to actually connect them up.  Fixes missing MMU setup if
+runtime PM resets V3D.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+(cherry picked from commit ca197699af29baa8236c74c53d4904ca8957ee06)
+---
+ drivers/gpu/drm/v3d/v3d_drv.c | 37 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 37 insertions(+)
+
+--- a/drivers/gpu/drm/v3d/v3d_drv.c
++++ b/drivers/gpu/drm/v3d/v3d_drv.c
+@@ -38,6 +38,42 @@
+ #define DRIVER_MINOR 0
+ #define DRIVER_PATCHLEVEL 0
+ 
++#ifdef CONFIG_PM
++static int v3d_runtime_suspend(struct device *dev)
++{
++	struct drm_device *drm = dev_get_drvdata(dev);
++	struct v3d_dev *v3d = to_v3d_dev(drm);
++
++	v3d_irq_disable(v3d);
++
++	clk_disable_unprepare(v3d->clk);
++
++	return 0;
++}
++
++static int v3d_runtime_resume(struct device *dev)
++{
++	struct drm_device *drm = dev_get_drvdata(dev);
++	struct v3d_dev *v3d = to_v3d_dev(drm);
++	int ret;
++
++	ret = clk_prepare_enable(v3d->clk);
++	if (ret != 0)
++		return ret;
++
++	/* XXX: VPM base */
++
++	v3d_mmu_set_page_table(v3d);
++	v3d_irq_enable(v3d);
++
++	return 0;
++}
++#endif
++
++static const struct dev_pm_ops v3d_pm_ops = {
++	SET_RUNTIME_PM_OPS(v3d_runtime_suspend, v3d_runtime_resume, NULL)
++};
++
+ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
+ 			       struct drm_file *file_priv)
+ {
+@@ -332,6 +368,7 @@ static struct platform_driver v3d_platfo
+ 	.driver		= {
+ 		.name	= "v3d",
+ 		.of_match_table = v3d_of_match,
++		.pm = &v3d_pm_ops,
+ 	},
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0158-i2c-bcm2835-Set-clock-stretch-timeout-to-35ms.patch b/target/linux/bcm27xx/patches-5.15/950-0158-i2c-bcm2835-Set-clock-stretch-timeout-to-35ms.patch
new file mode 100644
index 0000000000..ced440b995
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0158-i2c-bcm2835-Set-clock-stretch-timeout-to-35ms.patch
@@ -0,0 +1,47 @@
+From 0d02c918c82916059a2a68a9dfa9d426c0a1c8fa Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 12 Jul 2019 15:38:35 +0100
+Subject: [PATCH] i2c: bcm2835: Set clock-stretch timeout to 35ms
+
+The BCM2835 I2C blocks have a register to set the clock-stretch
+timeout - how long the device is allowed to hold SCL low - in bus
+cycles. The current driver doesn't write to the register, therefore
+the default value of 64 cycles is being used for all devices.
+
+Set the timeout to the value recommended for SMBus - 35ms.
+
+See: https://github.com/raspberrypi/linux/issues/3064
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/i2c/busses/i2c-bcm2835.c | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+--- a/drivers/i2c/busses/i2c-bcm2835.c
++++ b/drivers/i2c/busses/i2c-bcm2835.c
+@@ -193,6 +193,7 @@ static int clk_bcm2835_i2c_set_rate(stru
+ {
+ 	struct clk_bcm2835_i2c *div = to_clk_bcm2835_i2c(hw);
+ 	u32 redl, fedl;
++	u32 clk_tout;
+ 	u32 divider = clk_bcm2835_i2c_calc_divider(rate, parent_rate);
+ 
+ 	if (divider == -EINVAL)
+@@ -216,6 +217,17 @@ static int clk_bcm2835_i2c_set_rate(stru
+ 	bcm2835_i2c_writel(div->i2c_dev, BCM2835_I2C_DEL,
+ 			   (fedl << BCM2835_I2C_FEDL_SHIFT) |
+ 			   (redl << BCM2835_I2C_REDL_SHIFT));
++
++	/*
++	 * Set the clock stretch timeout to the SMBUs-recommended 35ms.
++	 */
++	if (rate > 0xffff*1000/35)
++	    clk_tout = 0xffff;
++	else
++	    clk_tout = 35*rate/1000;
++
++	bcm2835_i2c_writel(div->i2c_dev, BCM2835_I2C_CLKT, clk_tout);
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0159-clk-bcm2835-Avoid-null-pointer-exception.patch b/target/linux/bcm27xx/patches-5.15/950-0159-clk-bcm2835-Avoid-null-pointer-exception.patch
new file mode 100644
index 0000000000..092c7ecffc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0159-clk-bcm2835-Avoid-null-pointer-exception.patch
@@ -0,0 +1,29 @@
+From e2a40771ad7e8268c1d9b8f8b5f7ca49ef3ecc2f Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 6 Aug 2019 15:23:14 +0100
+Subject: [PATCH] clk-bcm2835: Avoid null pointer exception
+
+clk_desc_array[BCM2835_PLLB] doesn't exist so we dereference null when iterating
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -2304,9 +2304,11 @@ static bool bcm2835_clk_is_claimed(const
+ 	int i;
+ 
+ 	for (i = 0; i < ARRAY_SIZE(clk_desc_array); i++) {
+-		const char *clk_name = *(const char **)(clk_desc_array[i].data);
+-		if (!strcmp(name, clk_name))
+-		    return bcm2835_clk_claimed[i];
++		if (clk_desc_array[i].data) {
++			const char *clk_name = *(const char **)(clk_desc_array[i].data);
++			if (!strcmp(name, clk_name))
++				return bcm2835_clk_claimed[i];
++		}
+ 	}
+ 
+ 	return false;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0160-drm-v3d-HACK-gut-runtime-pm-for-now.patch b/target/linux/bcm27xx/patches-5.15/950-0160-drm-v3d-HACK-gut-runtime-pm-for-now.patch
new file mode 100644
index 0000000000..dabf4c0ec7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0160-drm-v3d-HACK-gut-runtime-pm-for-now.patch
@@ -0,0 +1,109 @@
+From b0f7366704c0da4e0be8f8df887378717acf135b Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Mon, 14 Jan 2019 15:13:17 -0800
+Subject: [PATCH] drm/v3d: HACK: gut runtime pm for now.
+
+Something is still unstable -- on starting a new glxgears from an idle
+X11, I get an MMU violation in high addresses.  The CTS also failed
+quite quickly.  With this, CTS progresses for an hour before OOMing
+(allocating some big buffers when my board only has 600MB available to
+Linux)
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/gpu/drm/v3d/v3d_debugfs.c | 16 +---------------
+ drivers/gpu/drm/v3d/v3d_drv.c     |  9 ---------
+ 2 files changed, 1 insertion(+), 24 deletions(-)
+
+--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
++++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
+@@ -4,7 +4,6 @@
+ #include <linux/circ_buf.h>
+ #include <linux/ctype.h>
+ #include <linux/debugfs.h>
+-#include <linux/pm_runtime.h>
+ #include <linux/seq_file.h>
+ 
+ #include <drm/drm_debugfs.h>
+@@ -130,11 +129,8 @@ static int v3d_v3d_debugfs_ident(struct
+ 	struct drm_device *dev = node->minor->dev;
+ 	struct v3d_dev *v3d = to_v3d_dev(dev);
+ 	u32 ident0, ident1, ident2, ident3, cores;
+-	int ret, core;
++	int core;
+ 
+-	ret = pm_runtime_get_sync(v3d->drm.dev);
+-	if (ret < 0)
+-		return ret;
+ 
+ 	ident0 = V3D_READ(V3D_HUB_IDENT0);
+ 	ident1 = V3D_READ(V3D_HUB_IDENT1);
+@@ -187,9 +183,6 @@ static int v3d_v3d_debugfs_ident(struct
+ 			   (misccfg & V3D_MISCCFG_OVRTMUOUT) != 0);
+ 	}
+ 
+-	pm_runtime_mark_last_busy(v3d->drm.dev);
+-	pm_runtime_put_autosuspend(v3d->drm.dev);
+-
+ 	return 0;
+ }
+ 
+@@ -217,11 +210,6 @@ static int v3d_measure_clock(struct seq_
+ 	uint32_t cycles;
+ 	int core = 0;
+ 	int measure_ms = 1000;
+-	int ret;
+-
+-	ret = pm_runtime_get_sync(v3d->drm.dev);
+-	if (ret < 0)
+-		return ret;
+ 
+ 	if (v3d->ver >= 40) {
+ 		V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3,
+@@ -245,8 +233,6 @@ static int v3d_measure_clock(struct seq_
+ 		   cycles / (measure_ms * 1000),
+ 		   (cycles / (measure_ms * 100)) % 10);
+ 
+-	pm_runtime_mark_last_busy(v3d->drm.dev);
+-	pm_runtime_put_autosuspend(v3d->drm.dev);
+ 
+ 	return 0;
+ }
+--- a/drivers/gpu/drm/v3d/v3d_drv.c
++++ b/drivers/gpu/drm/v3d/v3d_drv.c
+@@ -79,7 +79,6 @@ static int v3d_get_param_ioctl(struct dr
+ {
+ 	struct v3d_dev *v3d = to_v3d_dev(dev);
+ 	struct drm_v3d_get_param *args = data;
+-	int ret;
+ 	static const u32 reg_map[] = {
+ 		[DRM_V3D_PARAM_V3D_UIFCFG] = V3D_HUB_UIFCFG,
+ 		[DRM_V3D_PARAM_V3D_HUB_IDENT1] = V3D_HUB_IDENT1,
+@@ -105,17 +104,12 @@ static int v3d_get_param_ioctl(struct dr
+ 		if (args->value != 0)
+ 			return -EINVAL;
+ 
+-		ret = pm_runtime_get_sync(v3d->drm.dev);
+-		if (ret < 0)
+-			return ret;
+ 		if (args->param >= DRM_V3D_PARAM_V3D_CORE0_IDENT0 &&
+ 		    args->param <= DRM_V3D_PARAM_V3D_CORE0_IDENT2) {
+ 			args->value = V3D_CORE_READ(0, offset);
+ 		} else {
+ 			args->value = V3D_READ(offset);
+ 		}
+-		pm_runtime_mark_last_busy(v3d->drm.dev);
+-		pm_runtime_put_autosuspend(v3d->drm.dev);
+ 		return 0;
+ 	}
+ 
+@@ -320,9 +314,6 @@ static int v3d_platform_drm_probe(struct
+ 		return -ENOMEM;
+ 	}
+ 
+-	pm_runtime_use_autosuspend(dev);
+-	pm_runtime_set_autosuspend_delay(dev, 50);
+-	pm_runtime_enable(dev);
+ 
+ 	ret = v3d_gem_init(drm);
+ 	if (ret)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0161-drm-v3d-Clock-V3D-down-when-not-in-use.patch b/target/linux/bcm27xx/patches-5.15/950-0161-drm-v3d-Clock-V3D-down-when-not-in-use.patch
new file mode 100644
index 0000000000..c9d0390972
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0161-drm-v3d-Clock-V3D-down-when-not-in-use.patch
@@ -0,0 +1,161 @@
+From e796ee16390e63ed5d8713d301d609b32843342d Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Thu, 2 May 2019 13:22:53 -0700
+Subject: [PATCH] drm/v3d: Clock V3D down when not in use.
+
+My various attempts at re-enabling runtime PM have failed, so just
+crank the clock down when V3D is idle to reduce power consumption.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/gpu/drm/v3d/v3d_drv.c | 18 ++++++++++++
+ drivers/gpu/drm/v3d/v3d_drv.h |  6 ++++
+ drivers/gpu/drm/v3d/v3d_gem.c | 53 +++++++++++++++++++++++++++++++----
+ 3 files changed, 72 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/v3d/v3d_drv.c
++++ b/drivers/gpu/drm/v3d/v3d_drv.c
+@@ -301,6 +301,21 @@ static int v3d_platform_drm_probe(struct
+ 		}
+ 	}
+ 
++	v3d->clk = devm_clk_get(dev, NULL);
++	if (IS_ERR(v3d->clk)) {
++		if (ret != -EPROBE_DEFER)
++			dev_err(dev, "Failed to get clock\n");
++		goto dev_free;
++	}
++	v3d->clk_up_rate = clk_get_rate(v3d->clk);
++	/* For downclocking, drop it to the minimum frequency we can get from
++	 * the CPRMAN clock generator dividing off our parent.  The divider is
++	 * 4 bits, but ask for just higher than that so that rounding doesn't
++	 * make cprman reject our rate.
++	 */
++	v3d->clk_down_rate =
++		(clk_get_rate(clk_get_parent(v3d->clk)) / (1 << 4)) + 10000;
++
+ 	if (v3d->ver < 41) {
+ 		ret = map_regs(v3d, &v3d->gca_regs, "gca");
+ 		if (ret)
+@@ -327,6 +342,9 @@ static int v3d_platform_drm_probe(struct
+ 	if (ret)
+ 		goto irq_disable;
+ 
++	ret = clk_set_rate(v3d->clk, v3d->clk_down_rate);
++	WARN_ON_ONCE(ret != 0);
++
+ 	return 0;
+ 
+ irq_disable:
+--- a/drivers/gpu/drm/v3d/v3d_drv.h
++++ b/drivers/gpu/drm/v3d/v3d_drv.h
+@@ -85,6 +85,12 @@ struct v3d_dev {
+ 	void __iomem *bridge_regs;
+ 	void __iomem *gca_regs;
+ 	struct clk *clk;
++	struct delayed_work clk_down_work;
++	unsigned long clk_up_rate, clk_down_rate;
++	struct mutex clk_lock;
++	u32 clk_refcount;
++	bool clk_up;
++
+ 	struct reset_control *reset;
+ 
+ 	/* Virtual and DMA addresses of the single shared page table. */
+--- a/drivers/gpu/drm/v3d/v3d_gem.c
++++ b/drivers/gpu/drm/v3d/v3d_gem.c
+@@ -4,6 +4,7 @@
+ #include <linux/device.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/io.h>
++#include <linux/clk.h>
+ #include <linux/module.h>
+ #include <linux/platform_device.h>
+ #include <linux/pm_runtime.h>
+@@ -19,6 +20,47 @@
+ #include "v3d_trace.h"
+ 
+ static void
++v3d_clock_down_work(struct work_struct *work)
++{
++	struct v3d_dev *v3d =
++		container_of(work, struct v3d_dev, clk_down_work.work);
++	int ret;
++
++	ret = clk_set_rate(v3d->clk, v3d->clk_down_rate);
++	v3d->clk_up = false;
++	WARN_ON_ONCE(ret != 0);
++}
++
++static void
++v3d_clock_up_get(struct v3d_dev *v3d)
++{
++	mutex_lock(&v3d->clk_lock);
++	if (v3d->clk_refcount++ == 0) {
++		cancel_delayed_work_sync(&v3d->clk_down_work);
++		if (!v3d->clk_up)  {
++			int ret;
++
++			ret = clk_set_rate(v3d->clk, v3d->clk_up_rate);
++			WARN_ON_ONCE(ret != 0);
++			v3d->clk_up = true;
++		}
++	}
++	mutex_unlock(&v3d->clk_lock);
++}
++
++static void
++v3d_clock_up_put(struct v3d_dev *v3d)
++{
++	mutex_lock(&v3d->clk_lock);
++	if (--v3d->clk_refcount == 0) {
++		schedule_delayed_work(&v3d->clk_down_work,
++				      msecs_to_jiffies(100));
++	}
++	mutex_unlock(&v3d->clk_lock);
++}
++
++
++static void
+ v3d_init_core(struct v3d_dev *v3d, int core)
+ {
+ 	/* Set OVRTMUOUT, which means that the texture sampler uniform
+@@ -358,6 +400,7 @@ v3d_job_free(struct kref *ref)
+ 	struct v3d_job *job = container_of(ref, struct v3d_job, refcount);
+ 	unsigned long index;
+ 	struct dma_fence *fence;
++	struct v3d_dev *v3d = job->v3d;
+ 	int i;
+ 
+ 	for (i = 0; i < job->bo_count; i++) {
+@@ -371,11 +414,7 @@ v3d_job_free(struct kref *ref)
+ 	}
+ 	xa_destroy(&job->deps);
+ 
+-	dma_fence_put(job->irq_fence);
+-	dma_fence_put(job->done_fence);
+-
+-	pm_runtime_mark_last_busy(job->v3d->drm.dev);
+-	pm_runtime_put_autosuspend(job->v3d->drm.dev);
++	v3d_clock_up_put(v3d);
+ 
+ 	if (job->perfmon)
+ 		v3d_perfmon_put(job->perfmon);
+@@ -460,6 +499,7 @@ v3d_job_init(struct v3d_dev *v3d, struct
+ 	if (ret)
+ 		goto fail;
+ 
++	v3d_clock_up_get(v3d);
+ 	kref_init(&job->refcount);
+ 
+ 	return 0;
+@@ -914,6 +954,9 @@ v3d_gem_init(struct drm_device *dev)
+ 	mutex_init(&v3d->sched_lock);
+ 	mutex_init(&v3d->cache_clean_lock);
+ 
++	mutex_init(&v3d->clk_lock);
++	INIT_DELAYED_WORK(&v3d->clk_down_work, v3d_clock_down_work);
++
+ 	/* Note: We don't allocate address 0.  Various bits of HW
+ 	 * treat 0 as special, such as the occlusion query counters
+ 	 * where 0 means "disabled".
diff --git a/target/linux/bcm27xx/patches-5.15/950-0162-drivers-char-add-chardev-for-mmap-ing-the-RPiVid-con.patch b/target/linux/bcm27xx/patches-5.15/950-0162-drivers-char-add-chardev-for-mmap-ing-the-RPiVid-con.patch
new file mode 100644
index 0000000000..c85d882c12
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0162-drivers-char-add-chardev-for-mmap-ing-the-RPiVid-con.patch
@@ -0,0 +1,441 @@
+From 663bb3e36ffec5228f3126b021b0d78efb002ffe Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Thu, 9 May 2019 14:30:37 +0100
+Subject: [PATCH] drivers: char: add chardev for mmap'ing the RPiVid
+ control registers
+
+Based on the gpiomem driver, allow mapping of the decoder register
+spaces such that userspace can access control/status registers.
+This driver is intended for use with a custom ffmpeg backend accelerator
+prior to a v4l2 driver being written.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+
+driver: char: rpivid: Destroy the legacy device on remove
+
+The legacy name support created a new device that was never destroyed.
+If the driver was unloaded and reloaded, it failed due to the
+device already existing.
+
+Fixes: "75f1d14 driver: char: rpivid - also support legacy name"
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+driver: char: rpivid: Clean up error handling use of ERR_PTR/IS_ERR
+
+The driver used an unnecessary intermediate void* variable so it
+only called ERR_PTR once to convert to the error value.
+
+Switch to converting as the error arises to remove these intermediate
+variables.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+driver: char: rpivid: Add error handling to the legacy device load
+
+The return value from device_create for the legacy device was never
+checked or handled. Add the required error handling.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+driver: char: rpivid: Fix coding style whitespace issues.
+
+Makes checkpatch happier.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+driver: char: rpimem: Add SPDX licence header.
+
+Stops checkpatch complaining.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+driver: char: rpivid: Fix access to freed memory
+
+The error path during probe frees the private memory block, and
+then promptly dereferences it to log an error message.
+
+Use the base device instead of the pointer to it in the private
+structure.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/char/broadcom/Kconfig      |   8 +
+ drivers/char/broadcom/Makefile     |   1 +
+ drivers/char/broadcom/rpivid-mem.c | 292 +++++++++++++++++++++++++++++
+ drivers/mfd/bcm2835-pm.c           |  12 +-
+ drivers/soc/bcm/bcm2835-power.c    |   6 +-
+ include/linux/mfd/bcm2835-pm.h     |   2 +-
+ 6 files changed, 311 insertions(+), 10 deletions(-)
+ create mode 100644 drivers/char/broadcom/rpivid-mem.c
+
+--- a/drivers/char/broadcom/Kconfig
++++ b/drivers/char/broadcom/Kconfig
+@@ -39,3 +39,11 @@ config BCM2835_SMI_DEV
+ 		This driver provides a character device interface (ioctl + read/write) to
+ 		Broadcom's Secondary Memory interface. The low-level functionality is provided
+ 		by the SMI driver itself.
++
++config RPIVID_MEM
++	tristate "Character device driver for the Raspberry Pi RPIVid video decoder hardware"
++	default n
++	help
++		This driver provides a character device interface for memory-map operations
++		so userspace tools can access the control and status registers of the
++		Raspberry Pi RPiVid video decoder hardware.
+--- a/drivers/char/broadcom/Makefile
++++ b/drivers/char/broadcom/Makefile
+@@ -2,3 +2,4 @@ obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
+ obj-$(CONFIG_BCM_VCIO)		+= vcio.o
+ obj-$(CONFIG_BCM2835_DEVGPIOMEM)+= bcm2835-gpiomem.o
+ obj-$(CONFIG_BCM2835_SMI_DEV)	+= bcm2835_smi_dev.o
++obj-$(CONFIG_RPIVID_MEM)	+= rpivid-mem.o
+--- /dev/null
++++ b/drivers/char/broadcom/rpivid-mem.c
+@@ -0,0 +1,292 @@
++// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
++/**
++ * rpivid-mem.c - character device access to the RPiVid decoder registers
++ *
++ * Based on bcm2835-gpiomem.c. Provides IO memory access to the decoder
++ * register blocks such that ffmpeg plugins can access the hardware.
++ *
++ * Jonathan Bell <jonathan@raspberrypi.org>
++ * Copyright (c) 2019, Raspberry Pi (Trading) Ltd.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions, and the following disclaimer,
++ *    without modification.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. The names of the above-listed copyright holders may not be used
++ *    to endorse or promote products derived from this software without
++ *    specific prior written permission.
++ *
++ * ALTERNATIVELY, this software may be distributed under the terms of the
++ * GNU General Public License ("GPL") version 2, as published by the Free
++ * Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
++ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
++ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
++ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
++ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
++ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/platform_device.h>
++#include <linux/mm.h>
++#include <linux/slab.h>
++#include <linux/cdev.h>
++#include <linux/pagemap.h>
++#include <linux/io.h>
++
++#define DRIVER_NAME "rpivid-mem"
++#define DEVICE_MINOR 0
++
++struct rpivid_mem_priv {
++	dev_t devid;
++	struct class *class;
++	struct cdev rpivid_mem_cdev;
++	unsigned long regs_phys;
++	unsigned long mem_window_len;
++	struct device *dev;
++	const char *name;
++};
++
++static int rpivid_mem_open(struct inode *inode, struct file *file)
++{
++	int dev = iminor(inode);
++	int ret = 0;
++	struct rpivid_mem_priv *priv;
++
++	if (dev != DEVICE_MINOR && dev != DEVICE_MINOR + 1)
++		ret = -ENXIO;
++
++	priv = container_of(inode->i_cdev, struct rpivid_mem_priv,
++				rpivid_mem_cdev);
++	if (!priv)
++		return -EINVAL;
++	file->private_data = priv;
++	return ret;
++}
++
++static int rpivid_mem_release(struct inode *inode, struct file *file)
++{
++	int dev = iminor(inode);
++	int ret = 0;
++
++	if (dev != DEVICE_MINOR && dev != DEVICE_MINOR + 1)
++		ret = -ENXIO;
++
++	return ret;
++}
++
++static const struct vm_operations_struct rpivid_mem_vm_ops = {
++#ifdef CONFIG_HAVE_IOREMAP_PROT
++	.access = generic_access_phys
++#endif
++};
++
++static int rpivid_mem_mmap(struct file *file, struct vm_area_struct *vma)
++{
++	struct rpivid_mem_priv *priv;
++	unsigned long pages;
++
++	priv = file->private_data;
++	pages = priv->regs_phys >> PAGE_SHIFT;
++	/*
++	 * The address decode is far larger than the actual number of registers.
++	 * Just map the whole lot in.
++	 */
++	vma->vm_page_prot = phys_mem_access_prot(file, pages,
++						 priv->mem_window_len,
++						 vma->vm_page_prot);
++	vma->vm_ops = &rpivid_mem_vm_ops;
++	if (remap_pfn_range(vma, vma->vm_start,
++			pages,
++			priv->mem_window_len,
++			vma->vm_page_prot)) {
++		return -EAGAIN;
++	}
++	return 0;
++}
++
++static const struct file_operations
++rpivid_mem_fops = {
++	.owner = THIS_MODULE,
++	.open = rpivid_mem_open,
++	.release = rpivid_mem_release,
++	.mmap = rpivid_mem_mmap,
++};
++
++static const struct of_device_id rpivid_mem_of_match[];
++static int rpivid_mem_probe(struct platform_device *pdev)
++{
++	int err;
++	const struct of_device_id *id;
++	struct device *dev = &pdev->dev;
++	struct resource *ioresource;
++	struct rpivid_mem_priv *priv;
++
++	/* Allocate buffers and instance data */
++
++	priv = kzalloc(sizeof(struct rpivid_mem_priv), GFP_KERNEL);
++
++	if (!priv) {
++		err = -ENOMEM;
++		goto failed_inst_alloc;
++	}
++	platform_set_drvdata(pdev, priv);
++
++	priv->dev = dev;
++	id = of_match_device(rpivid_mem_of_match, dev);
++	if (!id)
++		return -EINVAL;
++	priv->name = id->data;
++
++	ioresource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (ioresource) {
++		priv->regs_phys = ioresource->start;
++		priv->mem_window_len = ioresource->end - ioresource->start;
++	} else {
++		dev_err(priv->dev, "failed to get IO resource");
++		err = -ENOENT;
++		goto failed_get_resource;
++	}
++
++	/* Create character device entries */
++
++	err = alloc_chrdev_region(&priv->devid,
++				  DEVICE_MINOR, 2, priv->name);
++	if (err != 0) {
++		dev_err(priv->dev, "unable to allocate device number");
++		goto failed_alloc_chrdev;
++	}
++	cdev_init(&priv->rpivid_mem_cdev, &rpivid_mem_fops);
++	priv->rpivid_mem_cdev.owner = THIS_MODULE;
++	err = cdev_add(&priv->rpivid_mem_cdev, priv->devid, 2);
++	if (err != 0) {
++		dev_err(priv->dev, "unable to register device");
++		goto failed_cdev_add;
++	}
++
++	/* Create sysfs entries */
++
++	priv->class = class_create(THIS_MODULE, priv->name);
++	if (IS_ERR(priv->class)) {
++		err = PTR_ERR(priv->class);
++		goto failed_class_create;
++	}
++
++	dev = device_create(priv->class, NULL, priv->devid, NULL, priv->name);
++	if (IS_ERR(dev)) {
++		err = PTR_ERR(dev);
++		goto failed_device_create;
++	}
++
++	/* Legacy alias */
++	{
++		char *oldname = kstrdup(priv->name, GFP_KERNEL);
++
++		oldname[1] = 'a';
++		oldname[2] = 'r';
++		oldname[3] = 'g';
++		oldname[4] = 'o';
++		oldname[5] = 'n';
++		dev = device_create(priv->class, NULL, priv->devid + 1, NULL,
++				    oldname + 1);
++		kfree(oldname);
++
++		if (IS_ERR(dev)) {
++			err = PTR_ERR(dev);
++			goto failed_legacy_device_create;
++		}
++	}
++
++	dev_info(priv->dev, "%s initialised: Registers at 0x%08lx length 0x%08lx",
++		priv->name, priv->regs_phys, priv->mem_window_len);
++
++	return 0;
++
++failed_legacy_device_create:
++	device_destroy(priv->class, priv->devid);
++failed_device_create:
++	class_destroy(priv->class);
++failed_class_create:
++	cdev_del(&priv->rpivid_mem_cdev);
++failed_cdev_add:
++	unregister_chrdev_region(priv->devid, 1);
++failed_alloc_chrdev:
++failed_get_resource:
++	kfree(priv);
++failed_inst_alloc:
++	dev_err(&pdev->dev, "could not load rpivid_mem");
++	return err;
++}
++
++static int rpivid_mem_remove(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct rpivid_mem_priv *priv = platform_get_drvdata(pdev);
++
++	device_destroy(priv->class, priv->devid + 1);
++	device_destroy(priv->class, priv->devid);
++	class_destroy(priv->class);
++	cdev_del(&priv->rpivid_mem_cdev);
++	unregister_chrdev_region(priv->devid, 1);
++	kfree(priv);
++
++	dev_info(dev, "%s driver removed - OK", priv->name);
++	return 0;
++}
++
++static const struct of_device_id rpivid_mem_of_match[] = {
++	{
++		.compatible = "raspberrypi,rpivid-hevc-decoder",
++		.data = "rpivid-hevcmem",
++	},
++	{
++		.compatible = "raspberrypi,rpivid-h264-decoder",
++		.data = "rpivid-h264mem",
++	},
++	{
++		.compatible = "raspberrypi,rpivid-vp9-decoder",
++		.data = "rpivid-vp9mem",
++	},
++	/* The "intc" is included as this block of hardware contains the
++	 * "frame done" status flags.
++	 */
++	{
++		.compatible = "raspberrypi,rpivid-local-intc",
++		.data = "rpivid-intcmem",
++	},
++	{ /* sentinel */ },
++};
++
++MODULE_DEVICE_TABLE(of, rpivid_mem_of_match);
++
++static struct platform_driver rpivid_mem_driver = {
++	.probe = rpivid_mem_probe,
++	.remove = rpivid_mem_remove,
++	.driver = {
++		   .name = DRIVER_NAME,
++		   .owner = THIS_MODULE,
++		   .of_match_table = rpivid_mem_of_match,
++		   },
++};
++
++module_platform_driver(rpivid_mem_driver);
++
++MODULE_ALIAS("platform:rpivid-mem");
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("Driver for accessing RPiVid decoder registers from userspace");
++MODULE_AUTHOR("Jonathan Bell <jonathan@raspberrypi.org>");
+--- a/drivers/mfd/bcm2835-pm.c
++++ b/drivers/mfd/bcm2835-pm.c
+@@ -50,14 +50,14 @@ static int bcm2835_pm_probe(struct platf
+ 	if (ret)
+ 		return ret;
+ 
+-	/* Map the ARGON ASB regs if present. */
++	/* Map the RPiVid ASB regs if present. */
+ 	res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+ 	if (res) {
+-		pm->arg_asb = devm_ioremap_resource(dev, res);
+-		if (IS_ERR(pm->arg_asb)) {
+-			dev_err(dev, "Failed to map ARGON ASB: %ld\n",
+-				PTR_ERR(pm->arg_asb));
+-			return PTR_ERR(pm->arg_asb);
++		pm->rpivid_asb = devm_ioremap_resource(dev, res);
++		if (IS_ERR(pm->rpivid_asb)) {
++			dev_err(dev, "Failed to map RPiVid ASB: %ld\n",
++				PTR_ERR(pm->rpivid_asb));
++			return PTR_ERR(pm->rpivid_asb);
+ 		}
+ 	}
+ 
+--- a/drivers/soc/bcm/bcm2835-power.c
++++ b/drivers/soc/bcm/bcm2835-power.c
+@@ -637,15 +637,15 @@ static int bcm2835_power_probe(struct pl
+ 	power->base = pm->base;
+ 	power->asb = pm->asb;
+ 
+-	/* 2711 hack: the new ARGON ASB took over V3D, which is our
++	/* 2711 hack: the new RPiVid ASB took over V3D, which is our
+ 	 * only consumer of this driver so far.  The old ASB seems to
+ 	 * still be present with ISP and H264 bits but no V3D, but I
+ 	 * don't know if that's real or not.  The V3D is in the same
+ 	 * place in the new ASB as the old one, so just poke the new
+ 	 * one for now.
+ 	 */
+-	if (pm->arg_asb) {
+-		power->asb = pm->arg_asb;
++	if (pm->rpivid_asb) {
++		power->asb = pm->rpivid_asb;
+ 		power->is_2711 = true;
+ 	}
+ 
+--- a/include/linux/mfd/bcm2835-pm.h
++++ b/include/linux/mfd/bcm2835-pm.h
+@@ -9,7 +9,7 @@ struct bcm2835_pm {
+ 	struct device *dev;
+ 	void __iomem *base;
+ 	void __iomem *asb;
+-	void __iomem *arg_asb;
++	void __iomem *rpivid_asb;
+ };
+ 
+ #endif /* BCM2835_MFD_PM_H */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0163-hid-usb-Add-device-quirks-for-Freeway-Airmouse-T3-an.patch b/target/linux/bcm27xx/patches-5.15/950-0163-hid-usb-Add-device-quirks-for-Freeway-Airmouse-T3-an.patch
new file mode 100644
index 0000000000..aa04cf68ba
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0163-hid-usb-Add-device-quirks-for-Freeway-Airmouse-T3-an.patch
@@ -0,0 +1,63 @@
+From 7d90d02076a400f2d41b042a6af0234f262f275c Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Thu, 1 Aug 2019 16:41:20 +0100
+Subject: [PATCH] hid: usb: Add device quirks for Freeway Airmouse T3
+ and MX3
+
+These wireless mouse/keyboard combo remote control devices specify
+multiple "wheel" events in their report descriptors. The wheel events
+are incorrectly defined and apparently map to accelerometer data, leading
+to spurious mouse scroll events being generated at an extreme rate when
+the device is moved.
+
+As a workaround, use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE to mask
+feeding the extra wheel events to the input subsystem.
+
+See: https://github.com/raspberrypi/firmware/issues/1189
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/hid/hid-ids.h    | 6 ++++++
+ drivers/hid/hid-quirks.c | 2 ++
+ 2 files changed, 8 insertions(+)
+
+--- a/drivers/hid/hid-ids.h
++++ b/drivers/hid/hid-ids.h
+@@ -225,6 +225,9 @@
+ #define USB_VENDOR_ID_BAANTO		0x2453
+ #define USB_DEVICE_ID_BAANTO_MT_190W2	0x0100
+ 
++#define USB_VENDOR_ID_BEKEN		0x25a7
++#define USB_DEVICE_ID_AIRMOUSE_T3	0x2402
++
+ #define USB_VENDOR_ID_BELKIN		0x050d
+ #define USB_DEVICE_ID_FLIP_KVM		0x3201
+ 
+@@ -1305,6 +1308,9 @@
+ #define USB_VENDOR_ID_XAT	0x2505
+ #define USB_DEVICE_ID_XAT_CSR	0x0220
+ 
++#define USB_VENDOR_ID_XENTA			0x1d57
++#define USB_DEVICE_ID_AIRMOUSE_MX3		0xad03
++
+ #define USB_VENDOR_ID_XIN_MO			0x16c0
+ #define USB_DEVICE_ID_XIN_MO_DUAL_ARCADE	0x05e1
+ #define USB_DEVICE_ID_THT_2P_ARCADE		0x75e1
+--- a/drivers/hid/hid-quirks.c
++++ b/drivers/hid/hid-quirks.c
+@@ -41,6 +41,7 @@ static const struct hid_device_id hid_qu
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS682), HID_QUIRK_NOGET },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS692), HID_QUIRK_NOGET },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM), HID_QUIRK_NOGET },
++	{ HID_USB_DEVICE(USB_VENDOR_ID_BEKEN, USB_DEVICE_ID_AIRMOUSE_T3), HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH), HID_QUIRK_MULTI_INPUT },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE), HID_QUIRK_ALWAYS_POLL },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE2), HID_QUIRK_ALWAYS_POLL },
+@@ -195,6 +196,7 @@ static const struct hid_device_id hid_qu
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD), HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE), HID_QUIRK_MULTI_INPUT },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_GROUP_AUDIO), HID_QUIRK_NOGET },
++	{ HID_USB_DEVICE(USB_VENDOR_ID_XENTA, USB_DEVICE_ID_AIRMOUSE_MX3), HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE },
+ 
+ 	{ 0 }
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0164-Add-HDMI1-facility-to-the-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0164-Add-HDMI1-facility-to-the-driver.patch
new file mode 100644
index 0000000000..30bcd58806
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0164-Add-HDMI1-facility-to-the-driver.patch
@@ -0,0 +1,85 @@
+From c22955161cfe7f3c10ff0ee4b1ff296c5bee9496 Mon Sep 17 00:00:00 2001
+From: James Hughes <james.hughes@raspberrypi.org>
+Date: Tue, 16 Jul 2019 12:18:21 +0100
+Subject: [PATCH] Add HDMI1 facility to the driver.
+
+For generic ALSA, all you need is the bcm2835.h change, but
+have also added structures for IEC958 HDMI. Not sure how to
+test those.
+---
+ .../vc04_services/bcm2835-audio/bcm2835.c     | 29 ++++++++++++++++---
+ .../vc04_services/bcm2835-audio/bcm2835.h     |  4 ++-
+ 2 files changed, 28 insertions(+), 5 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -79,7 +79,11 @@ static int bcm2835_audio_alsa_newpcm(str
+ 	if (err)
+ 		return err;
+ 
+-	err = snd_bcm2835_new_pcm(chip, "bcm2835 IEC958/HDMI", 1, 0, 1, true);
++	err = snd_bcm2835_new_pcm(chip, "bcm2835 IEC958/HDMI", 1, AUDIO_DEST_HDMI0, 1, true);
++	if (err)
++		return err;
++
++	err = snd_bcm2835_new_pcm(chip, "bcm2835 IEC958/HDMI1", 2, AUDIO_DEST_HDMI1, 1, true);
+ 	if (err)
+ 		return err;
+ 
+@@ -106,7 +110,7 @@ static struct bcm2835_audio_driver bcm28
+ 	.newctl = snd_bcm2835_new_ctl,
+ };
+ 
+-static struct bcm2835_audio_driver bcm2835_audio_hdmi = {
++static struct bcm2835_audio_driver bcm2835_audio_hdmi0 = {
+ 	.driver = {
+ 		.name = "bcm2835_hdmi",
+ 		.owner = THIS_MODULE,
+@@ -116,7 +120,20 @@ static struct bcm2835_audio_driver bcm28
+ 	.minchannels = 1,
+ 	.newpcm = bcm2835_audio_simple_newpcm,
+ 	.newctl = snd_bcm2835_new_hdmi_ctl,
+-	.route = AUDIO_DEST_HDMI
++	.route = AUDIO_DEST_HDMI0
++};
++
++static struct bcm2835_audio_driver bcm2835_audio_hdmi1 = {
++	.driver = {
++		.name = "bcm2835_hdmi",
++		.owner = THIS_MODULE,
++	},
++	.shortname = "bcm2835 HDMI 1",
++	.longname  = "bcm2835 HDMI 1",
++	.minchannels = 1,
++	.newpcm = bcm2835_audio_simple_newpcm,
++	.newctl = snd_bcm2835_new_hdmi_ctl,
++	.route = AUDIO_DEST_HDMI1
+ };
+ 
+ static struct bcm2835_audio_driver bcm2835_audio_headphones = {
+@@ -143,7 +160,11 @@ static struct bcm2835_audio_drivers chil
+ 		.is_enabled = &enable_compat_alsa,
+ 	},
+ 	{
+-		.audio_driver = &bcm2835_audio_hdmi,
++		.audio_driver = &bcm2835_audio_hdmi0,
++		.is_enabled = &enable_hdmi,
++	},
++	{
++		.audio_driver = &bcm2835_audio_hdmi1,
+ 		.is_enabled = &enable_hdmi,
+ 	},
+ 	{
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
+@@ -33,7 +33,9 @@ enum {
+ enum snd_bcm2835_route {
+ 	AUDIO_DEST_AUTO = 0,
+ 	AUDIO_DEST_HEADPHONES = 1,
+-	AUDIO_DEST_HDMI = 2,
++	AUDIO_DEST_HDMI = 2,  // for backwards compatibility.
++	AUDIO_DEST_HDMI0 = 2,
++	AUDIO_DEST_HDMI1 = 3,
+ 	AUDIO_DEST_MAX,
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0165-net-bcmgenet-Workaround-2-for-Pi4-Ethernet-fail.patch b/target/linux/bcm27xx/patches-5.15/950-0165-net-bcmgenet-Workaround-2-for-Pi4-Ethernet-fail.patch
new file mode 100644
index 0000000000..b2f4e6c8c0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0165-net-bcmgenet-Workaround-2-for-Pi4-Ethernet-fail.patch
@@ -0,0 +1,51 @@
+From 9af6d93967ff5a2d90a6f82c20f4d6b2785535e7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 9 Aug 2019 08:51:43 +0100
+Subject: [PATCH] net: bcmgenet: Workaround #2 for Pi4 Ethernet fail
+
+Some combinations of Pi 4Bs and Ethernet switches don't reliably get a
+DCHP-assigned IP address, leaving the unit with a self=assigned 169.254
+address. In the failure case, the Pi is left able to receive packets
+but not send them, suggesting that the MAC<->PHY link is getting into
+a bad state.
+
+It has been found empirically that skipping a reset step by the genet
+driver prevents the failures. No downsides have been discovered yet,
+and unlike the forced renegotiation it doesn't increase the time to
+get an IP address, so the workaround is enabled by default; add
+
+  genet.skip_umac_reset=n
+
+to the command line to disable it.
+
+See: https://github.com/raspberrypi/linux/issues/3108
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/ethernet/broadcom/genet/bcmgenet.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -67,6 +67,9 @@
+ 
+ /* Forward declarations */
+ static void bcmgenet_set_rx_mode(struct net_device *dev);
++static bool skip_umac_reset = true;
++module_param(skip_umac_reset, bool, 0444);
++MODULE_PARM_DESC(skip_umac_reset, "Skip UMAC reset step");
+ 
+ static inline void bcmgenet_writel(u32 value, void __iomem *offset)
+ {
+@@ -2439,6 +2442,11 @@ static void reset_umac(struct bcmgenet_p
+ 	bcmgenet_rbuf_ctrl_set(priv, 0);
+ 	udelay(10);
+ 
++	if (skip_umac_reset) {
++		pr_warn("Skipping UMAC reset\n");
++		return;
++	}
++
+ 	/* issue soft reset and disable MAC while updating its registers */
+ 	bcmgenet_umac_writel(priv, CMD_SW_RESET, UMAC_CMD);
+ 	udelay(2);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0166-xhci-Use-more-event-ring-segment-table-entries.patch b/target/linux/bcm27xx/patches-5.15/950-0166-xhci-Use-more-event-ring-segment-table-entries.patch
new file mode 100644
index 0000000000..e3f72fe95e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0166-xhci-Use-more-event-ring-segment-table-entries.patch
@@ -0,0 +1,60 @@
+From 271d837c58918de2cac5715798ebf71df43b39f7 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Tue, 13 Aug 2019 15:53:29 +0100
+Subject: [PATCH] xhci: Use more event ring segment table entries
+
+Users have reported log spam created by "Event Ring Full" xHC event
+TRBs. These are caused by interrupt latency in conjunction with a very
+busy set of devices on the bus. The errors are benign, but throughput
+will suffer as the xHC will pause processing of transfers until the
+event ring is drained by the kernel. Expand the number of event TRB slots
+available by increasing the number of event ring segments in the ERST.
+
+Controllers have a hardware-defined limit as to the number of ERST
+entries they can process, so make the actual number in use
+min(ERST_MAX_SEGS, hw_max).
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/usb/host/xhci-mem.c | 8 +++++---
+ drivers/usb/host/xhci.h     | 4 ++--
+ 2 files changed, 7 insertions(+), 5 deletions(-)
+
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -2511,9 +2511,11 @@ int xhci_mem_init(struct xhci_hcd *xhci,
+ 	 * Event ring setup: Allocate a normal ring, but also setup
+ 	 * the event ring segment table (ERST).  Section 4.9.3.
+ 	 */
++	val2 = 1 << HCS_ERST_MAX(xhci->hcs_params2);
++	val2 = min_t(unsigned int, ERST_MAX_SEGS, val2);
+ 	xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Allocating event ring");
+-	xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, 1, TYPE_EVENT,
+-					0, flags);
++	xhci->event_ring = xhci_ring_alloc(xhci, val2, 1, TYPE_EVENT,
++					   0, flags);
+ 	if (!xhci->event_ring)
+ 		goto fail;
+ 	if (xhci_check_trb_in_td_math(xhci) < 0)
+@@ -2526,7 +2528,7 @@ int xhci_mem_init(struct xhci_hcd *xhci,
+ 	/* set ERST count with the number of entries in the segment table */
+ 	val = readl(&xhci->ir_set->erst_size);
+ 	val &= ERST_SIZE_MASK;
+-	val |= ERST_NUM_SEGS;
++	val |= val2;
+ 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
+ 			"// Write ERST size = %i to ir_set 0 (some bits preserved)",
+ 			val);
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1673,8 +1673,8 @@ struct urb_priv {
+  * Each segment table entry is 4*32bits long.  1K seems like an ok size:
+  * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,
+  * meaning 64 ring segments.
+- * Initial allocated size of the ERST, in number of entries */
+-#define	ERST_NUM_SEGS	1
++ * Maximum number of segments in the ERST */
++#define	ERST_MAX_SEGS	8
+ /* Poll every 60 seconds */
+ #define	POLL_TIMEOUT	60
+ /* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0167-configs-arm64-bcm2711-Enable-V3D.patch b/target/linux/bcm27xx/patches-5.15/950-0167-configs-arm64-bcm2711-Enable-V3D.patch
new file mode 100644
index 0000000000..0ba6078f42
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0167-configs-arm64-bcm2711-Enable-V3D.patch
@@ -0,0 +1,28 @@
+From 98631cef94563d6857f4133e7917f234be8667bd Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 15 Aug 2019 12:02:34 +0100
+Subject: [PATCH] configs: arm64/bcm2711: Enable V3D
+
+Enable the V3D driver, which depends on BCM2835_POWER.
+
+Originally submitted by GitHub user 'phire' in a slightly different
+form.
+
+See: https://github.com/raspberrypi/linux/pull/3063
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/gpu/drm/v3d/Kconfig | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/v3d/Kconfig
++++ b/drivers/gpu/drm/v3d/Kconfig
+@@ -1,7 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0-only
+ config DRM_V3D
+ 	tristate "Broadcom V3D 3.x and newer"
+-	depends on ARCH_BCM || ARCH_BCMSTB || COMPILE_TEST
++	depends on ARCH_BCM || ARCH_BCMSTB || ARCH_BCM2835 || COMPILE_TEST
+ 	depends on DRM
+ 	depends on COMMON_CLK
+ 	depends on MMU
diff --git a/target/linux/bcm27xx/patches-5.15/950-0168-arch-arm-Add-model-string-to-cpuinfo.patch b/target/linux/bcm27xx/patches-5.15/950-0168-arch-arm-Add-model-string-to-cpuinfo.patch
new file mode 100644
index 0000000000..0dc45bab6b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0168-arch-arm-Add-model-string-to-cpuinfo.patch
@@ -0,0 +1,36 @@
+From b1c840b30fd383c23cc794a1c329bc626ab172b2 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 3 Sep 2019 18:16:56 +0100
+Subject: [PATCH] arch/arm: Add model string to cpuinfo
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/kernel/setup.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/arch/arm/kernel/setup.c
++++ b/arch/arm/kernel/setup.c
+@@ -1264,6 +1264,8 @@ static int c_show(struct seq_file *m, vo
+ {
+ 	int i, j;
+ 	u32 cpuid;
++	struct device_node *np;
++	const char *model;
+ 
+ 	for_each_online_cpu(i) {
+ 		/*
+@@ -1323,6 +1325,14 @@ static int c_show(struct seq_file *m, vo
+ 	seq_printf(m, "Revision\t: %04x\n", system_rev);
+ 	seq_printf(m, "Serial\t\t: %s\n", system_serial);
+ 
++	np = of_find_node_by_path("/");
++	if (np) {
++		if (!of_property_read_string(np, "model",
++					     &model))
++			seq_printf(m, "Model\t\t: %s\n", model);
++		of_node_put(np);
++	}
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0169-arch-arm64-Add-Revision-Serial-Model-to-cpuinfo.patch b/target/linux/bcm27xx/patches-5.15/950-0169-arch-arm64-Add-Revision-Serial-Model-to-cpuinfo.patch
new file mode 100644
index 0000000000..2e537b6a5b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0169-arch-arm64-Add-Revision-Serial-Model-to-cpuinfo.patch
@@ -0,0 +1,58 @@
+From c1c1dc795330dc5f53396612c0e91a106d91ef99 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 3 Sep 2019 18:17:25 +0100
+Subject: [PATCH] arch/arm64: Add Revision, Serial, Model to cpuinfo
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm64/kernel/cpuinfo.c | 25 +++++++++++++++++++++++++
+ 1 file changed, 25 insertions(+)
+
+--- a/arch/arm64/kernel/cpuinfo.c
++++ b/arch/arm64/kernel/cpuinfo.c
+@@ -17,6 +17,7 @@
+ #include <linux/elf.h>
+ #include <linux/init.h>
+ #include <linux/kernel.h>
++#include <linux/of_platform.h>
+ #include <linux/personality.h>
+ #include <linux/preempt.h>
+ #include <linux/printk.h>
+@@ -140,6 +141,10 @@ static int c_show(struct seq_file *m, vo
+ {
+ 	int i, j;
+ 	bool compat = personality(current->personality) == PER_LINUX32;
++	struct device_node *np;
++	const char *model;
++	const char *serial;
++	u32 revision;
+ 
+ 	for_each_online_cpu(i) {
+ 		struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
+@@ -200,6 +205,26 @@ static int c_show(struct seq_file *m, vo
+ 		seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
+ 	}
+ 
++	seq_printf(m, "Hardware\t: BCM2835\n");
++
++	np = of_find_node_by_path("/system");
++	if (np) {
++		if (!of_property_read_u32(np, "linux,revision", &revision))
++			seq_printf(m, "Revision\t: %04x\n", revision);
++		of_node_put(np);
++	}
++
++	np = of_find_node_by_path("/");
++	if (np) {
++		if (!of_property_read_string(np, "serial-number",
++					     &serial))
++			seq_printf(m, "Serial\t\t: %s\n", serial);
++		if (!of_property_read_string(np, "model",
++					     &model))
++			seq_printf(m, "Model\t\t: %s\n", model);
++		of_node_put(np);
++	}
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0170-media-dt-bindings-Add-binding-for-the-Sony-IMX219-se.patch b/target/linux/bcm27xx/patches-5.15/950-0170-media-dt-bindings-Add-binding-for-the-Sony-IMX219-se.patch
new file mode 100644
index 0000000000..49efff3874
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0170-media-dt-bindings-Add-binding-for-the-Sony-IMX219-se.patch
@@ -0,0 +1,77 @@
+From 3c54a4cdc8c65248c347a02b36ac378fe81379ba Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 28 Aug 2019 13:34:30 +0100
+Subject: [PATCH] media: dt-bindings: Add binding for the Sony IMX219
+ sensor
+
+The IMX219 is an 8MPix CSI2 sensor, supporting 2 or 4 data lanes.
+Document the binding for this device.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../devicetree/bindings/media/i2c/imx219.txt  | 59 +++++++++++++++++++
+ 1 file changed, 59 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/i2c/imx219.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/i2c/imx219.txt
+@@ -0,0 +1,59 @@
++* Sony 1/4.0-Inch 8Mpixel CMOS Digital Image Sensor
++
++The Sony imx219 is a 1/4.0-inch CMOS active pixel digital image sensor with
++an active array size of 3280H x 2464V. It is programmable through I2C
++interface. The I2C address is fixed to 0x10 as per sensor data sheet.
++Image data is sent through MIPI CSI-2, which is configured as either 2 or 4
++data lanes.
++
++Required Properties:
++- compatible: value should be "sony,imx219" for imx219 sensor
++- reg: I2C bus address of the device
++- clocks: reference to the xclk input clock.
++- clock-names: should be "xclk".
++- DOVDD-supply: Digital I/O voltage supply, 1.8 volts
++- AVDD-supply: Analog voltage supply, 2.8 volts
++- DVDD-supply: Digital core voltage supply, 1.2 volts
++
++Optional Properties:
++- xclr-gpios: reference to the GPIO connected to the xclr pin, if any. Must be
++	      released after all supplies are applied.
++	      This is an active high signal to the imx219.
++
++The imx219 device node should contain one 'port' child node with
++an 'endpoint' subnode. For further reading on port node refer to
++Documentation/devicetree/bindings/media/video-interfaces.txt.
++
++Endpoint node required properties for CSI-2 connection are:
++- remote-endpoint: a phandle to the bus receiver's endpoint node.
++- clock-lanes: should be set to <0> (clock lane on hardware lane 0)
++- data-lanes: should be set to <1 2>, or  <1 2 3 4> (two or four lane CSI-2
++  supported)
++
++Example:
++	sensor@10 {
++		compatible = "sony,imx219";
++		reg = <0x10>;
++		#address-cells = <1>;
++		#size-cells = <0>;
++		clocks = <&imx219_clk>;
++		clock-names = "xclk";
++		xclr-gpios = <&gpio_sensor 0 0>;
++		DOVDD-supply = <&vgen4_reg>; /* 1.8v */
++		AVDD-supply = <&vgen3_reg>;  /* 2.8v */
++		DVDD-supply = <&vgen2_reg>;  /* 1.2v */
++
++		imx219_clk: camera-clk {
++			compatible = "fixed-clock";
++			#clock-cells = <0>;
++			clock-frequency = <24000000>;
++		};
++
++		port {
++			sensor_out: endpoint {
++				remote-endpoint = <&csiss_in>;
++				clock-lanes = <0>;
++				data-lanes = <1 2>;
++			};
++		};
++	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0171-v4l2-Add-a-Greyworld-AWB-mode.patch b/target/linux/bcm27xx/patches-5.15/950-0171-v4l2-Add-a-Greyworld-AWB-mode.patch
new file mode 100644
index 0000000000..3f7a2aa6b9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0171-v4l2-Add-a-Greyworld-AWB-mode.patch
@@ -0,0 +1,5064 @@
+From 8b666c067e3a52f960e0e6112451596d8b1c672f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Fri, 6 Sep 2019 15:04:51 +0100
+Subject: [PATCH] v4l2: Add a Greyworld AWB mode.
+
+Adds a simple greyworld white balance preset, mainly for use
+with cameras without an IR filter (eg Raspberry Pi NoIR)
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/media/v4l2-core/v4l2-ctrls.c | 5036 ++++++++++++++++++++++++++
+ include/uapi/linux/v4l2-controls.h   |    1 +
+ 2 files changed, 5037 insertions(+)
+ create mode 100644 drivers/media/v4l2-core/v4l2-ctrls.c
+
+--- /dev/null
++++ b/drivers/media/v4l2-core/v4l2-ctrls.c
+@@ -0,0 +1,5036 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++/*
++    V4L2 controls framework implementation.
++
++    Copyright (C) 2010  Hans Verkuil <hverkuil@xs4all.nl>
++
++ */
++
++#define pr_fmt(fmt) "v4l2-ctrls: " fmt
++
++#include <linux/ctype.h>
++#include <linux/export.h>
++#include <linux/mm.h>
++#include <linux/slab.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-dev.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-fwnode.h>
++#include <media/v4l2-ioctl.h>
++
++#define dprintk(vdev, fmt, arg...) do {					\
++	if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \
++		printk(KERN_DEBUG pr_fmt("%s: %s: " fmt),		\
++		       __func__, video_device_node_name(vdev), ##arg);	\
++} while (0)
++
++#define has_op(master, op) \
++	(master->ops && master->ops->op)
++#define call_op(master, op) \
++	(has_op(master, op) ? master->ops->op(master) : 0)
++
++static const union v4l2_ctrl_ptr ptr_null;
++
++/* Internal temporary helper struct, one for each v4l2_ext_control */
++struct v4l2_ctrl_helper {
++	/* Pointer to the control reference of the master control */
++	struct v4l2_ctrl_ref *mref;
++	/* The control ref corresponding to the v4l2_ext_control ID field. */
++	struct v4l2_ctrl_ref *ref;
++	/* v4l2_ext_control index of the next control belonging to the
++	   same cluster, or 0 if there isn't any. */
++	u32 next;
++};
++
++/* Small helper function to determine if the autocluster is set to manual
++   mode. */
++static bool is_cur_manual(const struct v4l2_ctrl *master)
++{
++	return master->is_auto && master->cur.val == master->manual_mode_value;
++}
++
++/* Same as above, but this checks the against the new value instead of the
++   current value. */
++static bool is_new_manual(const struct v4l2_ctrl *master)
++{
++	return master->is_auto && master->val == master->manual_mode_value;
++}
++
++/* Returns NULL or a character pointer array containing the menu for
++   the given control ID. The pointer array ends with a NULL pointer.
++   An empty string signifies a menu entry that is invalid. This allows
++   drivers to disable certain options if it is not supported. */
++const char * const *v4l2_ctrl_get_menu(u32 id)
++{
++	static const char * const mpeg_audio_sampling_freq[] = {
++		"44.1 kHz",
++		"48 kHz",
++		"32 kHz",
++		NULL
++	};
++	static const char * const mpeg_audio_encoding[] = {
++		"MPEG-1/2 Layer I",
++		"MPEG-1/2 Layer II",
++		"MPEG-1/2 Layer III",
++		"MPEG-2/4 AAC",
++		"AC-3",
++		NULL
++	};
++	static const char * const mpeg_audio_l1_bitrate[] = {
++		"32 kbps",
++		"64 kbps",
++		"96 kbps",
++		"128 kbps",
++		"160 kbps",
++		"192 kbps",
++		"224 kbps",
++		"256 kbps",
++		"288 kbps",
++		"320 kbps",
++		"352 kbps",
++		"384 kbps",
++		"416 kbps",
++		"448 kbps",
++		NULL
++	};
++	static const char * const mpeg_audio_l2_bitrate[] = {
++		"32 kbps",
++		"48 kbps",
++		"56 kbps",
++		"64 kbps",
++		"80 kbps",
++		"96 kbps",
++		"112 kbps",
++		"128 kbps",
++		"160 kbps",
++		"192 kbps",
++		"224 kbps",
++		"256 kbps",
++		"320 kbps",
++		"384 kbps",
++		NULL
++	};
++	static const char * const mpeg_audio_l3_bitrate[] = {
++		"32 kbps",
++		"40 kbps",
++		"48 kbps",
++		"56 kbps",
++		"64 kbps",
++		"80 kbps",
++		"96 kbps",
++		"112 kbps",
++		"128 kbps",
++		"160 kbps",
++		"192 kbps",
++		"224 kbps",
++		"256 kbps",
++		"320 kbps",
++		NULL
++	};
++	static const char * const mpeg_audio_ac3_bitrate[] = {
++		"32 kbps",
++		"40 kbps",
++		"48 kbps",
++		"56 kbps",
++		"64 kbps",
++		"80 kbps",
++		"96 kbps",
++		"112 kbps",
++		"128 kbps",
++		"160 kbps",
++		"192 kbps",
++		"224 kbps",
++		"256 kbps",
++		"320 kbps",
++		"384 kbps",
++		"448 kbps",
++		"512 kbps",
++		"576 kbps",
++		"640 kbps",
++		NULL
++	};
++	static const char * const mpeg_audio_mode[] = {
++		"Stereo",
++		"Joint Stereo",
++		"Dual",
++		"Mono",
++		NULL
++	};
++	static const char * const mpeg_audio_mode_extension[] = {
++		"Bound 4",
++		"Bound 8",
++		"Bound 12",
++		"Bound 16",
++		NULL
++	};
++	static const char * const mpeg_audio_emphasis[] = {
++		"No Emphasis",
++		"50/15 us",
++		"CCITT J17",
++		NULL
++	};
++	static const char * const mpeg_audio_crc[] = {
++		"No CRC",
++		"16-bit CRC",
++		NULL
++	};
++	static const char * const mpeg_audio_dec_playback[] = {
++		"Auto",
++		"Stereo",
++		"Left",
++		"Right",
++		"Mono",
++		"Swapped Stereo",
++		NULL
++	};
++	static const char * const mpeg_video_encoding[] = {
++		"MPEG-1",
++		"MPEG-2",
++		"MPEG-4 AVC",
++		NULL
++	};
++	static const char * const mpeg_video_aspect[] = {
++		"1x1",
++		"4x3",
++		"16x9",
++		"2.21x1",
++		NULL
++	};
++	static const char * const mpeg_video_bitrate_mode[] = {
++		"Variable Bitrate",
++		"Constant Bitrate",
++		"Constant Quality",
++		NULL
++	};
++	static const char * const mpeg_stream_type[] = {
++		"MPEG-2 Program Stream",
++		"MPEG-2 Transport Stream",
++		"MPEG-1 System Stream",
++		"MPEG-2 DVD-compatible Stream",
++		"MPEG-1 VCD-compatible Stream",
++		"MPEG-2 SVCD-compatible Stream",
++		NULL
++	};
++	static const char * const mpeg_stream_vbi_fmt[] = {
++		"No VBI",
++		"Private Packet, IVTV Format",
++		NULL
++	};
++	static const char * const camera_power_line_frequency[] = {
++		"Disabled",
++		"50 Hz",
++		"60 Hz",
++		"Auto",
++		NULL
++	};
++	static const char * const camera_exposure_auto[] = {
++		"Auto Mode",
++		"Manual Mode",
++		"Shutter Priority Mode",
++		"Aperture Priority Mode",
++		NULL
++	};
++	static const char * const camera_exposure_metering[] = {
++		"Average",
++		"Center Weighted",
++		"Spot",
++		"Matrix",
++		NULL
++	};
++	static const char * const camera_auto_focus_range[] = {
++		"Auto",
++		"Normal",
++		"Macro",
++		"Infinity",
++		NULL
++	};
++	static const char * const colorfx[] = {
++		"None",
++		"Black & White",
++		"Sepia",
++		"Negative",
++		"Emboss",
++		"Sketch",
++		"Sky Blue",
++		"Grass Green",
++		"Skin Whiten",
++		"Vivid",
++		"Aqua",
++		"Art Freeze",
++		"Silhouette",
++		"Solarization",
++		"Antique",
++		"Set Cb/Cr",
++		NULL
++	};
++	static const char * const auto_n_preset_white_balance[] = {
++		"Manual",
++		"Auto",
++		"Incandescent",
++		"Fluorescent",
++		"Fluorescent H",
++		"Horizon",
++		"Daylight",
++		"Flash",
++		"Cloudy",
++		"Shade",
++		"Greyworld",
++		NULL,
++	};
++	static const char * const camera_iso_sensitivity_auto[] = {
++		"Manual",
++		"Auto",
++		NULL
++	};
++	static const char * const scene_mode[] = {
++		"None",
++		"Backlight",
++		"Beach/Snow",
++		"Candle Light",
++		"Dusk/Dawn",
++		"Fall Colors",
++		"Fireworks",
++		"Landscape",
++		"Night",
++		"Party/Indoor",
++		"Portrait",
++		"Sports",
++		"Sunset",
++		"Text",
++		NULL
++	};
++	static const char * const tune_emphasis[] = {
++		"None",
++		"50 Microseconds",
++		"75 Microseconds",
++		NULL,
++	};
++	static const char * const header_mode[] = {
++		"Separate Buffer",
++		"Joined With 1st Frame",
++		NULL,
++	};
++	static const char * const multi_slice[] = {
++		"Single",
++		"Max Macroblocks",
++		"Max Bytes",
++		NULL,
++	};
++	static const char * const entropy_mode[] = {
++		"CAVLC",
++		"CABAC",
++		NULL,
++	};
++	static const char * const mpeg_h264_level[] = {
++		"1",
++		"1b",
++		"1.1",
++		"1.2",
++		"1.3",
++		"2",
++		"2.1",
++		"2.2",
++		"3",
++		"3.1",
++		"3.2",
++		"4",
++		"4.1",
++		"4.2",
++		"5",
++		"5.1",
++		"5.2",
++		"6.0",
++		"6.1",
++		"6.2",
++		NULL,
++	};
++	static const char * const h264_loop_filter[] = {
++		"Enabled",
++		"Disabled",
++		"Disabled at Slice Boundary",
++		NULL,
++	};
++	static const char * const h264_profile[] = {
++		"Baseline",
++		"Constrained Baseline",
++		"Main",
++		"Extended",
++		"High",
++		"High 10",
++		"High 422",
++		"High 444 Predictive",
++		"High 10 Intra",
++		"High 422 Intra",
++		"High 444 Intra",
++		"CAVLC 444 Intra",
++		"Scalable Baseline",
++		"Scalable High",
++		"Scalable High Intra",
++		"Stereo High",
++		"Multiview High",
++		"Constrained High",
++		NULL,
++	};
++	static const char * const vui_sar_idc[] = {
++		"Unspecified",
++		"1:1",
++		"12:11",
++		"10:11",
++		"16:11",
++		"40:33",
++		"24:11",
++		"20:11",
++		"32:11",
++		"80:33",
++		"18:11",
++		"15:11",
++		"64:33",
++		"160:99",
++		"4:3",
++		"3:2",
++		"2:1",
++		"Extended SAR",
++		NULL,
++	};
++	static const char * const h264_fp_arrangement_type[] = {
++		"Checkerboard",
++		"Column",
++		"Row",
++		"Side by Side",
++		"Top Bottom",
++		"Temporal",
++		NULL,
++	};
++	static const char * const h264_fmo_map_type[] = {
++		"Interleaved Slices",
++		"Scattered Slices",
++		"Foreground with Leftover",
++		"Box Out",
++		"Raster Scan",
++		"Wipe Scan",
++		"Explicit",
++		NULL,
++	};
++	static const char * const h264_decode_mode[] = {
++		"Slice-Based",
++		"Frame-Based",
++		NULL,
++	};
++	static const char * const h264_start_code[] = {
++		"No Start Code",
++		"Annex B Start Code",
++		NULL,
++	};
++	static const char * const h264_hierarchical_coding_type[] = {
++		"Hier Coding B",
++		"Hier Coding P",
++		NULL,
++	};
++	static const char * const mpeg_mpeg2_level[] = {
++		"Low",
++		"Main",
++		"High 1440",
++		"High",
++		NULL,
++	};
++	static const char * const mpeg2_profile[] = {
++		"Simple",
++		"Main",
++		"SNR Scalable",
++		"Spatially Scalable",
++		"High",
++		NULL,
++	};
++	static const char * const mpeg_mpeg4_level[] = {
++		"0",
++		"0b",
++		"1",
++		"2",
++		"3",
++		"3b",
++		"4",
++		"5",
++		NULL,
++	};
++	static const char * const mpeg4_profile[] = {
++		"Simple",
++		"Advanced Simple",
++		"Core",
++		"Simple Scalable",
++		"Advanced Coding Efficiency",
++		NULL,
++	};
++
++	static const char * const vpx_golden_frame_sel[] = {
++		"Use Previous Frame",
++		"Use Previous Specific Frame",
++		NULL,
++	};
++	static const char * const vp8_profile[] = {
++		"0",
++		"1",
++		"2",
++		"3",
++		NULL,
++	};
++	static const char * const vp9_profile[] = {
++		"0",
++		"1",
++		"2",
++		"3",
++		NULL,
++	};
++	static const char * const vp9_level[] = {
++		"1",
++		"1.1",
++		"2",
++		"2.1",
++		"3",
++		"3.1",
++		"4",
++		"4.1",
++		"5",
++		"5.1",
++		"5.2",
++		"6",
++		"6.1",
++		"6.2",
++		NULL,
++	};
++
++	static const char * const flash_led_mode[] = {
++		"Off",
++		"Flash",
++		"Torch",
++		NULL,
++	};
++	static const char * const flash_strobe_source[] = {
++		"Software",
++		"External",
++		NULL,
++	};
++
++	static const char * const jpeg_chroma_subsampling[] = {
++		"4:4:4",
++		"4:2:2",
++		"4:2:0",
++		"4:1:1",
++		"4:1:0",
++		"Gray",
++		NULL,
++	};
++	static const char * const dv_tx_mode[] = {
++		"DVI-D",
++		"HDMI",
++		NULL,
++	};
++	static const char * const dv_rgb_range[] = {
++		"Automatic",
++		"RGB Limited Range (16-235)",
++		"RGB Full Range (0-255)",
++		NULL,
++	};
++	static const char * const dv_it_content_type[] = {
++		"Graphics",
++		"Photo",
++		"Cinema",
++		"Game",
++		"No IT Content",
++		NULL,
++	};
++	static const char * const detect_md_mode[] = {
++		"Disabled",
++		"Global",
++		"Threshold Grid",
++		"Region Grid",
++		NULL,
++	};
++
++	static const char * const hevc_profile[] = {
++		"Main",
++		"Main Still Picture",
++		"Main 10",
++		NULL,
++	};
++	static const char * const hevc_level[] = {
++		"1",
++		"2",
++		"2.1",
++		"3",
++		"3.1",
++		"4",
++		"4.1",
++		"5",
++		"5.1",
++		"5.2",
++		"6",
++		"6.1",
++		"6.2",
++		NULL,
++	};
++	static const char * const hevc_hierarchial_coding_type[] = {
++		"B",
++		"P",
++		NULL,
++	};
++	static const char * const hevc_refresh_type[] = {
++		"None",
++		"CRA",
++		"IDR",
++		NULL,
++	};
++	static const char * const hevc_size_of_length_field[] = {
++		"0",
++		"1",
++		"2",
++		"4",
++		NULL,
++	};
++	static const char * const hevc_tier[] = {
++		"Main",
++		"High",
++		NULL,
++	};
++	static const char * const hevc_loop_filter_mode[] = {
++		"Disabled",
++		"Enabled",
++		"Disabled at slice boundary",
++		"NULL",
++	};
++	static const char * const hevc_decode_mode[] = {
++		"Slice-Based",
++		"Frame-Based",
++		NULL,
++	};
++	static const char * const hevc_start_code[] = {
++		"No Start Code",
++		"Annex B Start Code",
++		NULL,
++	};
++	static const char * const camera_orientation[] = {
++		"Front",
++		"Back",
++		"External",
++		NULL,
++	};
++	static const char * const mpeg_video_frame_skip[] = {
++		"Disabled",
++		"Level Limit",
++		"VBV/CPB Limit",
++		NULL,
++	};
++
++	switch (id) {
++	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
++		return mpeg_audio_sampling_freq;
++	case V4L2_CID_MPEG_AUDIO_ENCODING:
++		return mpeg_audio_encoding;
++	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
++		return mpeg_audio_l1_bitrate;
++	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
++		return mpeg_audio_l2_bitrate;
++	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
++		return mpeg_audio_l3_bitrate;
++	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
++		return mpeg_audio_ac3_bitrate;
++	case V4L2_CID_MPEG_AUDIO_MODE:
++		return mpeg_audio_mode;
++	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
++		return mpeg_audio_mode_extension;
++	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
++		return mpeg_audio_emphasis;
++	case V4L2_CID_MPEG_AUDIO_CRC:
++		return mpeg_audio_crc;
++	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
++	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
++		return mpeg_audio_dec_playback;
++	case V4L2_CID_MPEG_VIDEO_ENCODING:
++		return mpeg_video_encoding;
++	case V4L2_CID_MPEG_VIDEO_ASPECT:
++		return mpeg_video_aspect;
++	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
++		return mpeg_video_bitrate_mode;
++	case V4L2_CID_MPEG_STREAM_TYPE:
++		return mpeg_stream_type;
++	case V4L2_CID_MPEG_STREAM_VBI_FMT:
++		return mpeg_stream_vbi_fmt;
++	case V4L2_CID_POWER_LINE_FREQUENCY:
++		return camera_power_line_frequency;
++	case V4L2_CID_EXPOSURE_AUTO:
++		return camera_exposure_auto;
++	case V4L2_CID_EXPOSURE_METERING:
++		return camera_exposure_metering;
++	case V4L2_CID_AUTO_FOCUS_RANGE:
++		return camera_auto_focus_range;
++	case V4L2_CID_COLORFX:
++		return colorfx;
++	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
++		return auto_n_preset_white_balance;
++	case V4L2_CID_ISO_SENSITIVITY_AUTO:
++		return camera_iso_sensitivity_auto;
++	case V4L2_CID_SCENE_MODE:
++		return scene_mode;
++	case V4L2_CID_TUNE_PREEMPHASIS:
++		return tune_emphasis;
++	case V4L2_CID_TUNE_DEEMPHASIS:
++		return tune_emphasis;
++	case V4L2_CID_FLASH_LED_MODE:
++		return flash_led_mode;
++	case V4L2_CID_FLASH_STROBE_SOURCE:
++		return flash_strobe_source;
++	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
++		return header_mode;
++	case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
++		return mpeg_video_frame_skip;
++	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
++		return multi_slice;
++	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
++		return entropy_mode;
++	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
++		return mpeg_h264_level;
++	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
++		return h264_loop_filter;
++	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
++		return h264_profile;
++	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
++		return vui_sar_idc;
++	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
++		return h264_fp_arrangement_type;
++	case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
++		return h264_fmo_map_type;
++	case V4L2_CID_STATELESS_H264_DECODE_MODE:
++		return h264_decode_mode;
++	case V4L2_CID_STATELESS_H264_START_CODE:
++		return h264_start_code;
++	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:
++		return h264_hierarchical_coding_type;
++	case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
++		return mpeg_mpeg2_level;
++	case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
++		return mpeg2_profile;
++	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
++		return mpeg_mpeg4_level;
++	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
++		return mpeg4_profile;
++	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
++		return vpx_golden_frame_sel;
++	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
++		return vp8_profile;
++	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
++		return vp9_profile;
++	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
++		return vp9_level;
++	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
++		return jpeg_chroma_subsampling;
++	case V4L2_CID_DV_TX_MODE:
++		return dv_tx_mode;
++	case V4L2_CID_DV_TX_RGB_RANGE:
++	case V4L2_CID_DV_RX_RGB_RANGE:
++		return dv_rgb_range;
++	case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
++	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
++		return dv_it_content_type;
++	case V4L2_CID_DETECT_MD_MODE:
++		return detect_md_mode;
++	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
++		return hevc_profile;
++	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
++		return hevc_level;
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
++		return hevc_hierarchial_coding_type;
++	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
++		return hevc_refresh_type;
++	case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
++		return hevc_size_of_length_field;
++	case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
++		return hevc_tier;
++	case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
++		return hevc_loop_filter_mode;
++	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
++		return hevc_decode_mode;
++	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
++		return hevc_start_code;
++	case V4L2_CID_CAMERA_ORIENTATION:
++		return camera_orientation;
++	default:
++		return NULL;
++	}
++}
++EXPORT_SYMBOL(v4l2_ctrl_get_menu);
++
++#define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); arr; })
++/*
++ * Returns NULL or an s64 type array containing the menu for given
++ * control ID. The total number of the menu items is returned in @len.
++ */
++const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len)
++{
++	static const s64 qmenu_int_vpx_num_partitions[] = {
++		1, 2, 4, 8,
++	};
++
++	static const s64 qmenu_int_vpx_num_ref_frames[] = {
++		1, 2, 3,
++	};
++
++	switch (id) {
++	case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
++		return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len);
++	case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
++		return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len);
++	default:
++		*len = 0;
++		return NULL;
++	}
++}
++EXPORT_SYMBOL(v4l2_ctrl_get_int_menu);
++
++/* Return the control name. */
++const char *v4l2_ctrl_get_name(u32 id)
++{
++	switch (id) {
++	/* USER controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_USER_CLASS:		return "User Controls";
++	case V4L2_CID_BRIGHTNESS:		return "Brightness";
++	case V4L2_CID_CONTRAST:			return "Contrast";
++	case V4L2_CID_SATURATION:		return "Saturation";
++	case V4L2_CID_HUE:			return "Hue";
++	case V4L2_CID_AUDIO_VOLUME:		return "Volume";
++	case V4L2_CID_AUDIO_BALANCE:		return "Balance";
++	case V4L2_CID_AUDIO_BASS:		return "Bass";
++	case V4L2_CID_AUDIO_TREBLE:		return "Treble";
++	case V4L2_CID_AUDIO_MUTE:		return "Mute";
++	case V4L2_CID_AUDIO_LOUDNESS:		return "Loudness";
++	case V4L2_CID_BLACK_LEVEL:		return "Black Level";
++	case V4L2_CID_AUTO_WHITE_BALANCE:	return "White Balance, Automatic";
++	case V4L2_CID_DO_WHITE_BALANCE:		return "Do White Balance";
++	case V4L2_CID_RED_BALANCE:		return "Red Balance";
++	case V4L2_CID_BLUE_BALANCE:		return "Blue Balance";
++	case V4L2_CID_GAMMA:			return "Gamma";
++	case V4L2_CID_EXPOSURE:			return "Exposure";
++	case V4L2_CID_AUTOGAIN:			return "Gain, Automatic";
++	case V4L2_CID_GAIN:			return "Gain";
++	case V4L2_CID_HFLIP:			return "Horizontal Flip";
++	case V4L2_CID_VFLIP:			return "Vertical Flip";
++	case V4L2_CID_POWER_LINE_FREQUENCY:	return "Power Line Frequency";
++	case V4L2_CID_HUE_AUTO:			return "Hue, Automatic";
++	case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature";
++	case V4L2_CID_SHARPNESS:		return "Sharpness";
++	case V4L2_CID_BACKLIGHT_COMPENSATION:	return "Backlight Compensation";
++	case V4L2_CID_CHROMA_AGC:		return "Chroma AGC";
++	case V4L2_CID_COLOR_KILLER:		return "Color Killer";
++	case V4L2_CID_COLORFX:			return "Color Effects";
++	case V4L2_CID_AUTOBRIGHTNESS:		return "Brightness, Automatic";
++	case V4L2_CID_BAND_STOP_FILTER:		return "Band-Stop Filter";
++	case V4L2_CID_ROTATE:			return "Rotate";
++	case V4L2_CID_BG_COLOR:			return "Background Color";
++	case V4L2_CID_CHROMA_GAIN:		return "Chroma Gain";
++	case V4L2_CID_ILLUMINATORS_1:		return "Illuminator 1";
++	case V4L2_CID_ILLUMINATORS_2:		return "Illuminator 2";
++	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:	return "Min Number of Capture Buffers";
++	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:	return "Min Number of Output Buffers";
++	case V4L2_CID_ALPHA_COMPONENT:		return "Alpha Component";
++	case V4L2_CID_COLORFX_CBCR:		return "Color Effects, CbCr";
++
++	/* Codec controls */
++	/* The MPEG controls are applicable to all codec controls
++	 * and the 'MPEG' part of the define is historical */
++	/* Keep the order of the 'case's the same as in videodev2.h! */
++	case V4L2_CID_CODEC_CLASS:		return "Codec Controls";
++	case V4L2_CID_MPEG_STREAM_TYPE:		return "Stream Type";
++	case V4L2_CID_MPEG_STREAM_PID_PMT:	return "Stream PMT Program ID";
++	case V4L2_CID_MPEG_STREAM_PID_AUDIO:	return "Stream Audio Program ID";
++	case V4L2_CID_MPEG_STREAM_PID_VIDEO:	return "Stream Video Program ID";
++	case V4L2_CID_MPEG_STREAM_PID_PCR:	return "Stream PCR Program ID";
++	case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID";
++	case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID";
++	case V4L2_CID_MPEG_STREAM_VBI_FMT:	return "Stream VBI Format";
++	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency";
++	case V4L2_CID_MPEG_AUDIO_ENCODING:	return "Audio Encoding";
++	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:	return "Audio Layer I Bitrate";
++	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:	return "Audio Layer II Bitrate";
++	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:	return "Audio Layer III Bitrate";
++	case V4L2_CID_MPEG_AUDIO_MODE:		return "Audio Stereo Mode";
++	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension";
++	case V4L2_CID_MPEG_AUDIO_EMPHASIS:	return "Audio Emphasis";
++	case V4L2_CID_MPEG_AUDIO_CRC:		return "Audio CRC";
++	case V4L2_CID_MPEG_AUDIO_MUTE:		return "Audio Mute";
++	case V4L2_CID_MPEG_AUDIO_AAC_BITRATE:	return "Audio AAC Bitrate";
++	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:	return "Audio AC-3 Bitrate";
++	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:	return "Audio Playback";
++	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback";
++	case V4L2_CID_MPEG_VIDEO_ENCODING:	return "Video Encoding";
++	case V4L2_CID_MPEG_VIDEO_ASPECT:	return "Video Aspect";
++	case V4L2_CID_MPEG_VIDEO_B_FRAMES:	return "Video B Frames";
++	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:	return "Video GOP Size";
++	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:	return "Video GOP Closure";
++	case V4L2_CID_MPEG_VIDEO_PULLDOWN:	return "Video Pulldown";
++	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:	return "Video Bitrate Mode";
++	case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY:	return "Constant Quality";
++	case V4L2_CID_MPEG_VIDEO_BITRATE:	return "Video Bitrate";
++	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:	return "Video Peak Bitrate";
++	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation";
++	case V4L2_CID_MPEG_VIDEO_MUTE:		return "Video Mute";
++	case V4L2_CID_MPEG_VIDEO_MUTE_YUV:	return "Video Mute YUV";
++	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:	return "Decoder Slice Interface";
++	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:	return "MPEG4 Loop Filter Enable";
++	case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:	return "Number of Intra Refresh MBs";
++	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:		return "Frame Level Rate Control Enable";
++	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:			return "H264 MB Level Rate Control";
++	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:			return "Sequence Header Mode";
++	case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC:			return "Max Number of Reference Pics";
++	case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:		return "Frame Skip Mode";
++	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:		return "Display Delay";
++	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:	return "Display Delay Enable";
++	case V4L2_CID_MPEG_VIDEO_AU_DELIMITER:			return "Generate Access Unit Delimiters";
++	case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP:		return "H263 I-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP:		return "H263 P-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP:		return "H263 B-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_H263_MIN_QP:			return "H263 Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H263_MAX_QP:			return "H263 Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:		return "H264 I-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:		return "H264 P-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP:		return "H264 B-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:			return "H264 Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:			return "H264 Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:		return "H264 8x8 Transform Enable";
++	case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:			return "H264 CPB Buffer Size";
++	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:		return "H264 Entropy Mode";
++	case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD:			return "H264 I-Frame Period";
++	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:			return "H264 Level";
++	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:	return "H264 Loop Filter Alpha Offset";
++	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:		return "H264 Loop Filter Beta Offset";
++	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:		return "H264 Loop Filter Mode";
++	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:			return "H264 Profile";
++	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT:	return "Vertical Size of SAR";
++	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH:	return "Horizontal Size of SAR";
++	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:		return "Aspect Ratio VUI Enable";
++	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:		return "VUI Aspect Ratio IDC";
++	case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING:	return "H264 Enable Frame Packing SEI";
++	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0:	return "H264 Set Curr. Frame as Frame0";
++	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:	return "H264 FP Arrangement Type";
++	case V4L2_CID_MPEG_VIDEO_H264_FMO:			return "H264 Flexible MB Ordering";
++	case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:		return "H264 Map Type for FMO";
++	case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP:		return "H264 FMO Number of Slice Groups";
++	case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION:	return "H264 FMO Direction of Change";
++	case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE:		return "H264 FMO Size of 1st Slice Grp";
++	case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH:		return "H264 FMO No. of Consecutive MBs";
++	case V4L2_CID_MPEG_VIDEO_H264_ASO:			return "H264 Arbitrary Slice Ordering";
++	case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER:		return "H264 ASO Slice Order";
++	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING:	return "Enable H264 Hierarchical Coding";
++	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:	return "H264 Hierarchical Coding Type";
++	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers";
++	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP:
++								return "H264 Set QP Value for HC Layers";
++	case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
++								return "H264 Constrained Intra Pred";
++	case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:	return "H264 Chroma QP Index Offset";
++	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MIN_QP:		return "H264 I-Frame Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP:		return "H264 I-Frame Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP:		return "H264 P-Frame Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP:		return "H264 P-Frame Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP:		return "H264 B-Frame Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP:		return "H264 B-Frame Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR:	return "H264 Hierarchical Lay 0 Bitrate";
++	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR:	return "H264 Hierarchical Lay 1 Bitrate";
++	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR:	return "H264 Hierarchical Lay 2 Bitrate";
++	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR:	return "H264 Hierarchical Lay 3 Bitrate";
++	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR:	return "H264 Hierarchical Lay 4 Bitrate";
++	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR:	return "H264 Hierarchical Lay 5 Bitrate";
++	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR:	return "H264 Hierarchical Lay 6 Bitrate";
++	case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:			return "MPEG2 Level";
++	case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:			return "MPEG2 Profile";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:		return "MPEG4 I-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:		return "MPEG4 P-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP:		return "MPEG4 B-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP:			return "MPEG4 Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP:			return "MPEG4 Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:			return "MPEG4 Level";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:			return "MPEG4 Profile";
++	case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:			return "Quarter Pixel Search Enable";
++	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:		return "Maximum Bytes in a Slice";
++	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:		return "Number of MBs in a Slice";
++	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:		return "Slice Partitioning Method";
++	case V4L2_CID_MPEG_VIDEO_VBV_SIZE:			return "VBV Buffer Size";
++	case V4L2_CID_MPEG_VIDEO_DEC_PTS:			return "Video Decoder PTS";
++	case V4L2_CID_MPEG_VIDEO_DEC_FRAME:			return "Video Decoder Frame Count";
++	case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR:		return "Video Decoder Conceal Color";
++	case V4L2_CID_MPEG_VIDEO_VBV_DELAY:			return "Initial Delay for VBV Control";
++	case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:		return "Horizontal MV Search Range";
++	case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:		return "Vertical MV Search Range";
++	case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:		return "Repeat Sequence Header";
++	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:		return "Force Key Frame";
++	case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID:		return "Base Layer Priority ID";
++	case V4L2_CID_MPEG_VIDEO_LTR_COUNT:			return "LTR Count";
++	case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:		return "Frame LTR Index";
++	case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:		return "Use LTR Frames";
++	case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS:		return "MPEG-2 Slice Parameters";
++	case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION:		return "MPEG-2 Quantization Matrices";
++	case V4L2_CID_FWHT_I_FRAME_QP:				return "FWHT I-Frame QP Value";
++	case V4L2_CID_FWHT_P_FRAME_QP:				return "FWHT P-Frame QP Value";
++
++	/* VPX controls */
++	case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:		return "VPX Number of Partitions";
++	case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4:		return "VPX Intra Mode Decision Disable";
++	case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:		return "VPX No. of Refs for P Frame";
++	case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL:		return "VPX Loop Filter Level Range";
++	case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS:		return "VPX Deblocking Effect Control";
++	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD:	return "VPX Golden Frame Refresh Period";
++	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:		return "VPX Golden Frame Indicator";
++	case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP:			return "VPX Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP:			return "VPX Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP:		return "VPX I-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP:		return "VPX P-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:			return "VP8 Profile";
++	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:			return "VP9 Profile";
++	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:			return "VP9 Level";
++
++	/* HEVC controls */
++	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP:		return "HEVC I-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP:		return "HEVC P-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP:		return "HEVC B-Frame QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP:			return "HEVC Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP:			return "HEVC Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP:		return "HEVC I-Frame Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP:		return "HEVC I-Frame Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP:		return "HEVC P-Frame Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP:		return "HEVC P-Frame Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP:		return "HEVC B-Frame Minimum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP:		return "HEVC B-Frame Maximum QP Value";
++	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:			return "HEVC Profile";
++	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:			return "HEVC Level";
++	case V4L2_CID_MPEG_VIDEO_HEVC_TIER:			return "HEVC Tier";
++	case V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION:	return "HEVC Frame Rate Resolution";
++	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH:	return "HEVC Maximum Coding Unit Depth";
++	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:		return "HEVC Refresh Type";
++	case V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED:		return "HEVC Constant Intra Prediction";
++	case V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU:		return "HEVC Lossless Encoding";
++	case V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT:		return "HEVC Wavefront";
++	case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:		return "HEVC Loop Filter";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP:			return "HEVC QP Values";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:		return "HEVC Hierarchical Coding Type";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER:	return "HEVC Hierarchical Coding Layer";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_QP:	return "HEVC Hierarchical Layer 0 QP";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_QP:	return "HEVC Hierarchical Layer 1 QP";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_QP:	return "HEVC Hierarchical Layer 2 QP";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_QP:	return "HEVC Hierarchical Layer 3 QP";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_QP:	return "HEVC Hierarchical Layer 4 QP";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_QP:	return "HEVC Hierarchical Layer 5 QP";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_QP:	return "HEVC Hierarchical Layer 6 QP";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_BR:	return "HEVC Hierarchical Lay 0 BitRate";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_BR:	return "HEVC Hierarchical Lay 1 BitRate";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_BR:	return "HEVC Hierarchical Lay 2 BitRate";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_BR:	return "HEVC Hierarchical Lay 3 BitRate";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_BR:	return "HEVC Hierarchical Lay 4 BitRate";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_BR:	return "HEVC Hierarchical Lay 5 BitRate";
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR:	return "HEVC Hierarchical Lay 6 BitRate";
++	case V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB:		return "HEVC General PB";
++	case V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID:		return "HEVC Temporal ID";
++	case V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING:		return "HEVC Strong Intra Smoothing";
++	case V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT:		return "HEVC Intra PU Split";
++	case V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION:		return "HEVC TMV Prediction";
++	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1:	return "HEVC Max Num of Candidate MVs";
++	case V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE:	return "HEVC ENC Without Startcode";
++	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD:		return "HEVC Num of I-Frame b/w 2 IDR";
++	case V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2:	return "HEVC Loop Filter Beta Offset";
++	case V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2:	return "HEVC Loop Filter TC Offset";
++	case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:	return "HEVC Size of Length Field";
++	case V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES:	return "Reference Frames for a P-Frame";
++	case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR:		return "Prepend SPS and PPS to IDR";
++	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:			return "HEVC Sequence Parameter Set";
++	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:			return "HEVC Picture Parameter Set";
++	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:		return "HEVC Slice Parameters";
++	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:		return "HEVC Decode Mode";
++	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:		return "HEVC Start Code";
++
++	/* CAMERA controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_CAMERA_CLASS:		return "Camera Controls";
++	case V4L2_CID_EXPOSURE_AUTO:		return "Auto Exposure";
++	case V4L2_CID_EXPOSURE_ABSOLUTE:	return "Exposure Time, Absolute";
++	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:	return "Exposure, Dynamic Framerate";
++	case V4L2_CID_PAN_RELATIVE:		return "Pan, Relative";
++	case V4L2_CID_TILT_RELATIVE:		return "Tilt, Relative";
++	case V4L2_CID_PAN_RESET:		return "Pan, Reset";
++	case V4L2_CID_TILT_RESET:		return "Tilt, Reset";
++	case V4L2_CID_PAN_ABSOLUTE:		return "Pan, Absolute";
++	case V4L2_CID_TILT_ABSOLUTE:		return "Tilt, Absolute";
++	case V4L2_CID_FOCUS_ABSOLUTE:		return "Focus, Absolute";
++	case V4L2_CID_FOCUS_RELATIVE:		return "Focus, Relative";
++	case V4L2_CID_FOCUS_AUTO:		return "Focus, Automatic Continuous";
++	case V4L2_CID_ZOOM_ABSOLUTE:		return "Zoom, Absolute";
++	case V4L2_CID_ZOOM_RELATIVE:		return "Zoom, Relative";
++	case V4L2_CID_ZOOM_CONTINUOUS:		return "Zoom, Continuous";
++	case V4L2_CID_PRIVACY:			return "Privacy";
++	case V4L2_CID_IRIS_ABSOLUTE:		return "Iris, Absolute";
++	case V4L2_CID_IRIS_RELATIVE:		return "Iris, Relative";
++	case V4L2_CID_AUTO_EXPOSURE_BIAS:	return "Auto Exposure, Bias";
++	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset";
++	case V4L2_CID_WIDE_DYNAMIC_RANGE:	return "Wide Dynamic Range";
++	case V4L2_CID_IMAGE_STABILIZATION:	return "Image Stabilization";
++	case V4L2_CID_ISO_SENSITIVITY:		return "ISO Sensitivity";
++	case V4L2_CID_ISO_SENSITIVITY_AUTO:	return "ISO Sensitivity, Auto";
++	case V4L2_CID_EXPOSURE_METERING:	return "Exposure, Metering Mode";
++	case V4L2_CID_SCENE_MODE:		return "Scene Mode";
++	case V4L2_CID_3A_LOCK:			return "3A Lock";
++	case V4L2_CID_AUTO_FOCUS_START:		return "Auto Focus, Start";
++	case V4L2_CID_AUTO_FOCUS_STOP:		return "Auto Focus, Stop";
++	case V4L2_CID_AUTO_FOCUS_STATUS:	return "Auto Focus, Status";
++	case V4L2_CID_AUTO_FOCUS_RANGE:		return "Auto Focus, Range";
++	case V4L2_CID_PAN_SPEED:		return "Pan, Speed";
++	case V4L2_CID_TILT_SPEED:		return "Tilt, Speed";
++	case V4L2_CID_UNIT_CELL_SIZE:		return "Unit Cell Size";
++	case V4L2_CID_CAMERA_ORIENTATION:	return "Camera Orientation";
++	case V4L2_CID_CAMERA_SENSOR_ROTATION:	return "Camera Sensor Rotation";
++
++	/* FM Radio Modulator controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_FM_TX_CLASS:		return "FM Radio Modulator Controls";
++	case V4L2_CID_RDS_TX_DEVIATION:		return "RDS Signal Deviation";
++	case V4L2_CID_RDS_TX_PI:		return "RDS Program ID";
++	case V4L2_CID_RDS_TX_PTY:		return "RDS Program Type";
++	case V4L2_CID_RDS_TX_PS_NAME:		return "RDS PS Name";
++	case V4L2_CID_RDS_TX_RADIO_TEXT:	return "RDS Radio Text";
++	case V4L2_CID_RDS_TX_MONO_STEREO:	return "RDS Stereo";
++	case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:	return "RDS Artificial Head";
++	case V4L2_CID_RDS_TX_COMPRESSED:	return "RDS Compressed";
++	case V4L2_CID_RDS_TX_DYNAMIC_PTY:	return "RDS Dynamic PTY";
++	case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
++	case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:	return "RDS Traffic Program";
++	case V4L2_CID_RDS_TX_MUSIC_SPEECH:	return "RDS Music";
++	case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:	return "RDS Enable Alt Frequencies";
++	case V4L2_CID_RDS_TX_ALT_FREQS:		return "RDS Alternate Frequencies";
++	case V4L2_CID_AUDIO_LIMITER_ENABLED:	return "Audio Limiter Feature Enabled";
++	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";
++	case V4L2_CID_AUDIO_LIMITER_DEVIATION:	return "Audio Limiter Deviation";
++	case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled";
++	case V4L2_CID_AUDIO_COMPRESSION_GAIN:	return "Audio Compression Gain";
++	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";
++	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";
++	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time";
++	case V4L2_CID_PILOT_TONE_ENABLED:	return "Pilot Tone Feature Enabled";
++	case V4L2_CID_PILOT_TONE_DEVIATION:	return "Pilot Tone Deviation";
++	case V4L2_CID_PILOT_TONE_FREQUENCY:	return "Pilot Tone Frequency";
++	case V4L2_CID_TUNE_PREEMPHASIS:		return "Pre-Emphasis";
++	case V4L2_CID_TUNE_POWER_LEVEL:		return "Tune Power Level";
++	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:	return "Tune Antenna Capacitor";
++
++	/* Flash controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_FLASH_CLASS:		return "Flash Controls";
++	case V4L2_CID_FLASH_LED_MODE:		return "LED Mode";
++	case V4L2_CID_FLASH_STROBE_SOURCE:	return "Strobe Source";
++	case V4L2_CID_FLASH_STROBE:		return "Strobe";
++	case V4L2_CID_FLASH_STROBE_STOP:	return "Stop Strobe";
++	case V4L2_CID_FLASH_STROBE_STATUS:	return "Strobe Status";
++	case V4L2_CID_FLASH_TIMEOUT:		return "Strobe Timeout";
++	case V4L2_CID_FLASH_INTENSITY:		return "Intensity, Flash Mode";
++	case V4L2_CID_FLASH_TORCH_INTENSITY:	return "Intensity, Torch Mode";
++	case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator";
++	case V4L2_CID_FLASH_FAULT:		return "Faults";
++	case V4L2_CID_FLASH_CHARGE:		return "Charge";
++	case V4L2_CID_FLASH_READY:		return "Ready to Strobe";
++
++	/* JPEG encoder controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_JPEG_CLASS:		return "JPEG Compression Controls";
++	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:	return "Chroma Subsampling";
++	case V4L2_CID_JPEG_RESTART_INTERVAL:	return "Restart Interval";
++	case V4L2_CID_JPEG_COMPRESSION_QUALITY:	return "Compression Quality";
++	case V4L2_CID_JPEG_ACTIVE_MARKER:	return "Active Markers";
++
++	/* Image source controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_IMAGE_SOURCE_CLASS:	return "Image Source Controls";
++	case V4L2_CID_VBLANK:			return "Vertical Blanking";
++	case V4L2_CID_HBLANK:			return "Horizontal Blanking";
++	case V4L2_CID_ANALOGUE_GAIN:		return "Analogue Gain";
++	case V4L2_CID_TEST_PATTERN_RED:		return "Red Pixel Value";
++	case V4L2_CID_TEST_PATTERN_GREENR:	return "Green (Red) Pixel Value";
++	case V4L2_CID_TEST_PATTERN_BLUE:	return "Blue Pixel Value";
++	case V4L2_CID_TEST_PATTERN_GREENB:	return "Green (Blue) Pixel Value";
++
++	/* Image processing controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_IMAGE_PROC_CLASS:		return "Image Processing Controls";
++	case V4L2_CID_LINK_FREQ:		return "Link Frequency";
++	case V4L2_CID_PIXEL_RATE:		return "Pixel Rate";
++	case V4L2_CID_TEST_PATTERN:		return "Test Pattern";
++	case V4L2_CID_DEINTERLACING_MODE:	return "Deinterlacing Mode";
++	case V4L2_CID_DIGITAL_GAIN:		return "Digital Gain";
++
++	/* DV controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_DV_CLASS:			return "Digital Video Controls";
++	case V4L2_CID_DV_TX_HOTPLUG:		return "Hotplug Present";
++	case V4L2_CID_DV_TX_RXSENSE:		return "RxSense Present";
++	case V4L2_CID_DV_TX_EDID_PRESENT:	return "EDID Present";
++	case V4L2_CID_DV_TX_MODE:		return "Transmit Mode";
++	case V4L2_CID_DV_TX_RGB_RANGE:		return "Tx RGB Quantization Range";
++	case V4L2_CID_DV_TX_IT_CONTENT_TYPE:	return "Tx IT Content Type";
++	case V4L2_CID_DV_RX_POWER_PRESENT:	return "Power Present";
++	case V4L2_CID_DV_RX_RGB_RANGE:		return "Rx RGB Quantization Range";
++	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:	return "Rx IT Content Type";
++
++	case V4L2_CID_FM_RX_CLASS:		return "FM Radio Receiver Controls";
++	case V4L2_CID_TUNE_DEEMPHASIS:		return "De-Emphasis";
++	case V4L2_CID_RDS_RECEPTION:		return "RDS Reception";
++	case V4L2_CID_RF_TUNER_CLASS:		return "RF Tuner Controls";
++	case V4L2_CID_RF_TUNER_RF_GAIN:		return "RF Gain";
++	case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:	return "LNA Gain, Auto";
++	case V4L2_CID_RF_TUNER_LNA_GAIN:	return "LNA Gain";
++	case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:	return "Mixer Gain, Auto";
++	case V4L2_CID_RF_TUNER_MIXER_GAIN:	return "Mixer Gain";
++	case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:	return "IF Gain, Auto";
++	case V4L2_CID_RF_TUNER_IF_GAIN:		return "IF Gain";
++	case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:	return "Bandwidth, Auto";
++	case V4L2_CID_RF_TUNER_BANDWIDTH:	return "Bandwidth";
++	case V4L2_CID_RF_TUNER_PLL_LOCK:	return "PLL Lock";
++	case V4L2_CID_RDS_RX_PTY:		return "RDS Program Type";
++	case V4L2_CID_RDS_RX_PS_NAME:		return "RDS PS Name";
++	case V4L2_CID_RDS_RX_RADIO_TEXT:	return "RDS Radio Text";
++	case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
++	case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:	return "RDS Traffic Program";
++	case V4L2_CID_RDS_RX_MUSIC_SPEECH:	return "RDS Music";
++
++	/* Detection controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_DETECT_CLASS:		return "Detection Controls";
++	case V4L2_CID_DETECT_MD_MODE:		return "Motion Detection Mode";
++	case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: return "MD Global Threshold";
++	case V4L2_CID_DETECT_MD_THRESHOLD_GRID:	return "MD Threshold Grid";
++	case V4L2_CID_DETECT_MD_REGION_GRID:	return "MD Region Grid";
++
++	/* Stateless Codec controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_CODEC_STATELESS_CLASS:	return "Stateless Codec Controls";
++	case V4L2_CID_STATELESS_H264_DECODE_MODE:		return "H264 Decode Mode";
++	case V4L2_CID_STATELESS_H264_START_CODE:		return "H264 Start Code";
++	case V4L2_CID_STATELESS_H264_SPS:			return "H264 Sequence Parameter Set";
++	case V4L2_CID_STATELESS_H264_PPS:			return "H264 Picture Parameter Set";
++	case V4L2_CID_STATELESS_H264_SCALING_MATRIX:		return "H264 Scaling Matrix";
++	case V4L2_CID_STATELESS_H264_PRED_WEIGHTS:		return "H264 Prediction Weight Table";
++	case V4L2_CID_STATELESS_H264_SLICE_PARAMS:		return "H264 Slice Parameters";
++	case V4L2_CID_STATELESS_H264_DECODE_PARAMS:		return "H264 Decode Parameters";
++	case V4L2_CID_STATELESS_FWHT_PARAMS:			return "FWHT Stateless Parameters";
++	case V4L2_CID_STATELESS_VP8_FRAME:			return "VP8 Frame Parameters";
++
++	/* Colorimetry controls */
++	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
++	case V4L2_CID_COLORIMETRY_CLASS:	return "Colorimetry Controls";
++	case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO:		return "HDR10 Content Light Info";
++	case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:	return "HDR10 Mastering Display";
++	default:
++		return NULL;
++	}
++}
++EXPORT_SYMBOL(v4l2_ctrl_get_name);
++
++void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
++		    s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags)
++{
++	*name = v4l2_ctrl_get_name(id);
++	*flags = 0;
++
++	switch (id) {
++	case V4L2_CID_AUDIO_MUTE:
++	case V4L2_CID_AUDIO_LOUDNESS:
++	case V4L2_CID_AUTO_WHITE_BALANCE:
++	case V4L2_CID_AUTOGAIN:
++	case V4L2_CID_HFLIP:
++	case V4L2_CID_VFLIP:
++	case V4L2_CID_HUE_AUTO:
++	case V4L2_CID_CHROMA_AGC:
++	case V4L2_CID_COLOR_KILLER:
++	case V4L2_CID_AUTOBRIGHTNESS:
++	case V4L2_CID_MPEG_AUDIO_MUTE:
++	case V4L2_CID_MPEG_VIDEO_MUTE:
++	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
++	case V4L2_CID_MPEG_VIDEO_PULLDOWN:
++	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
++	case V4L2_CID_FOCUS_AUTO:
++	case V4L2_CID_PRIVACY:
++	case V4L2_CID_AUDIO_LIMITER_ENABLED:
++	case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
++	case V4L2_CID_PILOT_TONE_ENABLED:
++	case V4L2_CID_ILLUMINATORS_1:
++	case V4L2_CID_ILLUMINATORS_2:
++	case V4L2_CID_FLASH_STROBE_STATUS:
++	case V4L2_CID_FLASH_CHARGE:
++	case V4L2_CID_FLASH_READY:
++	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
++	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:
++	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:
++	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
++	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
++	case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
++	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
++	case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:
++	case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:
++	case V4L2_CID_MPEG_VIDEO_AU_DELIMITER:
++	case V4L2_CID_WIDE_DYNAMIC_RANGE:
++	case V4L2_CID_IMAGE_STABILIZATION:
++	case V4L2_CID_RDS_RECEPTION:
++	case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
++	case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
++	case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
++	case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
++	case V4L2_CID_RF_TUNER_PLL_LOCK:
++	case V4L2_CID_RDS_TX_MONO_STEREO:
++	case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:
++	case V4L2_CID_RDS_TX_COMPRESSED:
++	case V4L2_CID_RDS_TX_DYNAMIC_PTY:
++	case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT:
++	case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:
++	case V4L2_CID_RDS_TX_MUSIC_SPEECH:
++	case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:
++	case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
++	case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
++	case V4L2_CID_RDS_RX_MUSIC_SPEECH:
++		*type = V4L2_CTRL_TYPE_BOOLEAN;
++		*min = 0;
++		*max = *step = 1;
++		break;
++	case V4L2_CID_ROTATE:
++		*type = V4L2_CTRL_TYPE_INTEGER;
++		*flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++		break;
++	case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:
++	case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:
++	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:
++		*type = V4L2_CTRL_TYPE_INTEGER;
++		break;
++	case V4L2_CID_MPEG_VIDEO_LTR_COUNT:
++		*type = V4L2_CTRL_TYPE_INTEGER;
++		break;
++	case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:
++		*type = V4L2_CTRL_TYPE_INTEGER;
++		*flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
++		break;
++	case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:
++		*type = V4L2_CTRL_TYPE_BITMASK;
++		*flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
++		break;
++	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
++	case V4L2_CID_PAN_RESET:
++	case V4L2_CID_TILT_RESET:
++	case V4L2_CID_FLASH_STROBE:
++	case V4L2_CID_FLASH_STROBE_STOP:
++	case V4L2_CID_AUTO_FOCUS_START:
++	case V4L2_CID_AUTO_FOCUS_STOP:
++	case V4L2_CID_DO_WHITE_BALANCE:
++		*type = V4L2_CTRL_TYPE_BUTTON;
++		*flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
++			  V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
++		*min = *max = *step = *def = 0;
++		break;
++	case V4L2_CID_POWER_LINE_FREQUENCY:
++	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
++	case V4L2_CID_MPEG_AUDIO_ENCODING:
++	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
++	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
++	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
++	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
++	case V4L2_CID_MPEG_AUDIO_MODE:
++	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
++	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
++	case V4L2_CID_MPEG_AUDIO_CRC:
++	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
++	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
++	case V4L2_CID_MPEG_VIDEO_ENCODING:
++	case V4L2_CID_MPEG_VIDEO_ASPECT:
++	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
++	case V4L2_CID_MPEG_STREAM_TYPE:
++	case V4L2_CID_MPEG_STREAM_VBI_FMT:
++	case V4L2_CID_EXPOSURE_AUTO:
++	case V4L2_CID_AUTO_FOCUS_RANGE:
++	case V4L2_CID_COLORFX:
++	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
++	case V4L2_CID_TUNE_PREEMPHASIS:
++	case V4L2_CID_FLASH_LED_MODE:
++	case V4L2_CID_FLASH_STROBE_SOURCE:
++	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
++	case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
++	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
++	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
++	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
++	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
++	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
++	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
++	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
++	case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
++	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:
++	case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
++	case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
++	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
++	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
++	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
++	case V4L2_CID_ISO_SENSITIVITY_AUTO:
++	case V4L2_CID_EXPOSURE_METERING:
++	case V4L2_CID_SCENE_MODE:
++	case V4L2_CID_DV_TX_MODE:
++	case V4L2_CID_DV_TX_RGB_RANGE:
++	case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
++	case V4L2_CID_DV_RX_RGB_RANGE:
++	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
++	case V4L2_CID_TEST_PATTERN:
++	case V4L2_CID_DEINTERLACING_MODE:
++	case V4L2_CID_TUNE_DEEMPHASIS:
++	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
++	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
++	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
++	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
++	case V4L2_CID_DETECT_MD_MODE:
++	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
++	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
++	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
++	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
++	case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
++	case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
++	case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
++	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
++	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
++	case V4L2_CID_STATELESS_H264_DECODE_MODE:
++	case V4L2_CID_STATELESS_H264_START_CODE:
++	case V4L2_CID_CAMERA_ORIENTATION:
++		*type = V4L2_CTRL_TYPE_MENU;
++		break;
++	case V4L2_CID_LINK_FREQ:
++		*type = V4L2_CTRL_TYPE_INTEGER_MENU;
++		break;
++	case V4L2_CID_RDS_TX_PS_NAME:
++	case V4L2_CID_RDS_TX_RADIO_TEXT:
++	case V4L2_CID_RDS_RX_PS_NAME:
++	case V4L2_CID_RDS_RX_RADIO_TEXT:
++		*type = V4L2_CTRL_TYPE_STRING;
++		break;
++	case V4L2_CID_ISO_SENSITIVITY:
++	case V4L2_CID_AUTO_EXPOSURE_BIAS:
++	case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
++	case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
++		*type = V4L2_CTRL_TYPE_INTEGER_MENU;
++		break;
++	case V4L2_CID_USER_CLASS:
++	case V4L2_CID_CAMERA_CLASS:
++	case V4L2_CID_CODEC_CLASS:
++	case V4L2_CID_FM_TX_CLASS:
++	case V4L2_CID_FLASH_CLASS:
++	case V4L2_CID_JPEG_CLASS:
++	case V4L2_CID_IMAGE_SOURCE_CLASS:
++	case V4L2_CID_IMAGE_PROC_CLASS:
++	case V4L2_CID_DV_CLASS:
++	case V4L2_CID_FM_RX_CLASS:
++	case V4L2_CID_RF_TUNER_CLASS:
++	case V4L2_CID_DETECT_CLASS:
++	case V4L2_CID_CODEC_STATELESS_CLASS:
++	case V4L2_CID_COLORIMETRY_CLASS:
++		*type = V4L2_CTRL_TYPE_CTRL_CLASS;
++		/* You can neither read nor write these */
++		*flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
++		*min = *max = *step = *def = 0;
++		break;
++	case V4L2_CID_BG_COLOR:
++		*type = V4L2_CTRL_TYPE_INTEGER;
++		*step = 1;
++		*min = 0;
++		/* Max is calculated as RGB888 that is 2^24 */
++		*max = 0xFFFFFF;
++		break;
++	case V4L2_CID_FLASH_FAULT:
++	case V4L2_CID_JPEG_ACTIVE_MARKER:
++	case V4L2_CID_3A_LOCK:
++	case V4L2_CID_AUTO_FOCUS_STATUS:
++	case V4L2_CID_DV_TX_HOTPLUG:
++	case V4L2_CID_DV_TX_RXSENSE:
++	case V4L2_CID_DV_TX_EDID_PRESENT:
++	case V4L2_CID_DV_RX_POWER_PRESENT:
++		*type = V4L2_CTRL_TYPE_BITMASK;
++		break;
++	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
++	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
++		*type = V4L2_CTRL_TYPE_INTEGER;
++		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
++		break;
++	case V4L2_CID_MPEG_VIDEO_DEC_PTS:
++		*type = V4L2_CTRL_TYPE_INTEGER64;
++		*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
++		*min = *def = 0;
++		*max = 0x1ffffffffLL;
++		*step = 1;
++		break;
++	case V4L2_CID_MPEG_VIDEO_DEC_FRAME:
++		*type = V4L2_CTRL_TYPE_INTEGER64;
++		*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
++		*min = *def = 0;
++		*max = 0x7fffffffffffffffLL;
++		*step = 1;
++		break;
++	case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR:
++		*type = V4L2_CTRL_TYPE_INTEGER64;
++		*min = 0;
++		/* default for 8 bit black, luma is 16, chroma is 128 */
++		*def = 0x8000800010LL;
++		*max = 0xffffffffffffLL;
++		*step = 1;
++		break;
++	case V4L2_CID_PIXEL_RATE:
++		*type = V4L2_CTRL_TYPE_INTEGER64;
++		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
++		break;
++	case V4L2_CID_DETECT_MD_REGION_GRID:
++		*type = V4L2_CTRL_TYPE_U8;
++		break;
++	case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
++		*type = V4L2_CTRL_TYPE_U16;
++		break;
++	case V4L2_CID_RDS_TX_ALT_FREQS:
++		*type = V4L2_CTRL_TYPE_U32;
++		break;
++	case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS:
++		*type = V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS;
++		break;
++	case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION:
++		*type = V4L2_CTRL_TYPE_MPEG2_QUANTIZATION;
++		break;
++	case V4L2_CID_STATELESS_FWHT_PARAMS:
++		*type = V4L2_CTRL_TYPE_FWHT_PARAMS;
++		break;
++	case V4L2_CID_STATELESS_H264_SPS:
++		*type = V4L2_CTRL_TYPE_H264_SPS;
++		break;
++	case V4L2_CID_STATELESS_H264_PPS:
++		*type = V4L2_CTRL_TYPE_H264_PPS;
++		break;
++	case V4L2_CID_STATELESS_H264_SCALING_MATRIX:
++		*type = V4L2_CTRL_TYPE_H264_SCALING_MATRIX;
++		break;
++	case V4L2_CID_STATELESS_H264_SLICE_PARAMS:
++		*type = V4L2_CTRL_TYPE_H264_SLICE_PARAMS;
++		break;
++	case V4L2_CID_STATELESS_H264_DECODE_PARAMS:
++		*type = V4L2_CTRL_TYPE_H264_DECODE_PARAMS;
++		break;
++	case V4L2_CID_STATELESS_H264_PRED_WEIGHTS:
++		*type = V4L2_CTRL_TYPE_H264_PRED_WEIGHTS;
++		break;
++	case V4L2_CID_STATELESS_VP8_FRAME:
++		*type = V4L2_CTRL_TYPE_VP8_FRAME;
++		break;
++	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:
++		*type = V4L2_CTRL_TYPE_HEVC_SPS;
++		break;
++	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:
++		*type = V4L2_CTRL_TYPE_HEVC_PPS;
++		break;
++	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
++		*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
++		break;
++	case V4L2_CID_UNIT_CELL_SIZE:
++		*type = V4L2_CTRL_TYPE_AREA;
++		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
++		break;
++	case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO:
++		*type = V4L2_CTRL_TYPE_HDR10_CLL_INFO;
++		break;
++	case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:
++		*type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY;
++		break;
++	default:
++		*type = V4L2_CTRL_TYPE_INTEGER;
++		break;
++	}
++	switch (id) {
++	case V4L2_CID_MPEG_AUDIO_ENCODING:
++	case V4L2_CID_MPEG_AUDIO_MODE:
++	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
++	case V4L2_CID_MPEG_VIDEO_B_FRAMES:
++	case V4L2_CID_MPEG_STREAM_TYPE:
++		*flags |= V4L2_CTRL_FLAG_UPDATE;
++		break;
++	case V4L2_CID_AUDIO_VOLUME:
++	case V4L2_CID_AUDIO_BALANCE:
++	case V4L2_CID_AUDIO_BASS:
++	case V4L2_CID_AUDIO_TREBLE:
++	case V4L2_CID_BRIGHTNESS:
++	case V4L2_CID_CONTRAST:
++	case V4L2_CID_SATURATION:
++	case V4L2_CID_HUE:
++	case V4L2_CID_RED_BALANCE:
++	case V4L2_CID_BLUE_BALANCE:
++	case V4L2_CID_GAMMA:
++	case V4L2_CID_SHARPNESS:
++	case V4L2_CID_CHROMA_GAIN:
++	case V4L2_CID_RDS_TX_DEVIATION:
++	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
++	case V4L2_CID_AUDIO_LIMITER_DEVIATION:
++	case V4L2_CID_AUDIO_COMPRESSION_GAIN:
++	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
++	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
++	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
++	case V4L2_CID_PILOT_TONE_DEVIATION:
++	case V4L2_CID_PILOT_TONE_FREQUENCY:
++	case V4L2_CID_TUNE_POWER_LEVEL:
++	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
++	case V4L2_CID_RF_TUNER_RF_GAIN:
++	case V4L2_CID_RF_TUNER_LNA_GAIN:
++	case V4L2_CID_RF_TUNER_MIXER_GAIN:
++	case V4L2_CID_RF_TUNER_IF_GAIN:
++	case V4L2_CID_RF_TUNER_BANDWIDTH:
++	case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
++		*flags |= V4L2_CTRL_FLAG_SLIDER;
++		break;
++	case V4L2_CID_PAN_RELATIVE:
++	case V4L2_CID_TILT_RELATIVE:
++	case V4L2_CID_FOCUS_RELATIVE:
++	case V4L2_CID_IRIS_RELATIVE:
++	case V4L2_CID_ZOOM_RELATIVE:
++		*flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
++			  V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
++		break;
++	case V4L2_CID_FLASH_STROBE_STATUS:
++	case V4L2_CID_AUTO_FOCUS_STATUS:
++	case V4L2_CID_FLASH_READY:
++	case V4L2_CID_DV_TX_HOTPLUG:
++	case V4L2_CID_DV_TX_RXSENSE:
++	case V4L2_CID_DV_TX_EDID_PRESENT:
++	case V4L2_CID_DV_RX_POWER_PRESENT:
++	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
++	case V4L2_CID_RDS_RX_PTY:
++	case V4L2_CID_RDS_RX_PS_NAME:
++	case V4L2_CID_RDS_RX_RADIO_TEXT:
++	case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
++	case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
++	case V4L2_CID_RDS_RX_MUSIC_SPEECH:
++	case V4L2_CID_CAMERA_ORIENTATION:
++	case V4L2_CID_CAMERA_SENSOR_ROTATION:
++		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
++		break;
++	case V4L2_CID_RF_TUNER_PLL_LOCK:
++		*flags |= V4L2_CTRL_FLAG_VOLATILE;
++		break;
++	}
++}
++EXPORT_SYMBOL(v4l2_ctrl_fill);
++
++static u32 user_flags(const struct v4l2_ctrl *ctrl)
++{
++	u32 flags = ctrl->flags;
++
++	if (ctrl->is_ptr)
++		flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
++
++	return flags;
++}
++
++static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes)
++{
++	memset(ev, 0, sizeof(*ev));
++	ev->type = V4L2_EVENT_CTRL;
++	ev->id = ctrl->id;
++	ev->u.ctrl.changes = changes;
++	ev->u.ctrl.type = ctrl->type;
++	ev->u.ctrl.flags = user_flags(ctrl);
++	if (ctrl->is_ptr)
++		ev->u.ctrl.value64 = 0;
++	else
++		ev->u.ctrl.value64 = *ctrl->p_cur.p_s64;
++	ev->u.ctrl.minimum = ctrl->minimum;
++	ev->u.ctrl.maximum = ctrl->maximum;
++	if (ctrl->type == V4L2_CTRL_TYPE_MENU
++	    || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
++		ev->u.ctrl.step = 1;
++	else
++		ev->u.ctrl.step = ctrl->step;
++	ev->u.ctrl.default_value = ctrl->default_value;
++}
++
++static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes)
++{
++	struct v4l2_event ev;
++	struct v4l2_subscribed_event *sev;
++
++	if (list_empty(&ctrl->ev_subs))
++		return;
++	fill_event(&ev, ctrl, changes);
++
++	list_for_each_entry(sev, &ctrl->ev_subs, node)
++		if (sev->fh != fh ||
++		    (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK))
++			v4l2_event_queue_fh(sev->fh, &ev);
++}
++
++static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
++		      union v4l2_ctrl_ptr ptr1,
++		      union v4l2_ctrl_ptr ptr2)
++{
++	switch (ctrl->type) {
++	case V4L2_CTRL_TYPE_BUTTON:
++		return false;
++	case V4L2_CTRL_TYPE_STRING:
++		idx *= ctrl->elem_size;
++		/* strings are always 0-terminated */
++		return !strcmp(ptr1.p_char + idx, ptr2.p_char + idx);
++	case V4L2_CTRL_TYPE_INTEGER64:
++		return ptr1.p_s64[idx] == ptr2.p_s64[idx];
++	case V4L2_CTRL_TYPE_U8:
++		return ptr1.p_u8[idx] == ptr2.p_u8[idx];
++	case V4L2_CTRL_TYPE_U16:
++		return ptr1.p_u16[idx] == ptr2.p_u16[idx];
++	case V4L2_CTRL_TYPE_U32:
++		return ptr1.p_u32[idx] == ptr2.p_u32[idx];
++	default:
++		if (ctrl->is_int)
++			return ptr1.p_s32[idx] == ptr2.p_s32[idx];
++		idx *= ctrl->elem_size;
++		return !memcmp(ptr1.p_const + idx, ptr2.p_const + idx,
++			       ctrl->elem_size);
++	}
++}
++
++static void std_init_compound(const struct v4l2_ctrl *ctrl, u32 idx,
++			      union v4l2_ctrl_ptr ptr)
++{
++	struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
++	struct v4l2_ctrl_vp8_frame *p_vp8_frame;
++	struct v4l2_ctrl_fwht_params *p_fwht_params;
++	void *p = ptr.p + idx * ctrl->elem_size;
++
++	if (ctrl->p_def.p_const)
++		memcpy(p, ctrl->p_def.p_const, ctrl->elem_size);
++	else
++		memset(p, 0, ctrl->elem_size);
++
++	/*
++	 * The cast is needed to get rid of a gcc warning complaining that
++	 * V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS is not part of the
++	 * v4l2_ctrl_type enum.
++	 */
++	switch ((u32)ctrl->type) {
++	case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
++		p_mpeg2_slice_params = p;
++		/* 4:2:0 */
++		p_mpeg2_slice_params->sequence.chroma_format = 1;
++		/* interlaced top field */
++		p_mpeg2_slice_params->picture.picture_structure = 1;
++		p_mpeg2_slice_params->picture.picture_coding_type =
++					V4L2_MPEG2_PICTURE_CODING_TYPE_I;
++		break;
++	case V4L2_CTRL_TYPE_VP8_FRAME:
++		p_vp8_frame = p;
++		p_vp8_frame->num_dct_parts = 1;
++		break;
++	case V4L2_CTRL_TYPE_FWHT_PARAMS:
++		p_fwht_params = p;
++		p_fwht_params->version = V4L2_FWHT_VERSION;
++		p_fwht_params->width = 1280;
++		p_fwht_params->height = 720;
++		p_fwht_params->flags = V4L2_FWHT_FL_PIXENC_YUV |
++			(2 << V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
++		break;
++	}
++}
++
++static void std_init(const struct v4l2_ctrl *ctrl, u32 idx,
++		     union v4l2_ctrl_ptr ptr)
++{
++	switch (ctrl->type) {
++	case V4L2_CTRL_TYPE_STRING:
++		idx *= ctrl->elem_size;
++		memset(ptr.p_char + idx, ' ', ctrl->minimum);
++		ptr.p_char[idx + ctrl->minimum] = '\0';
++		break;
++	case V4L2_CTRL_TYPE_INTEGER64:
++		ptr.p_s64[idx] = ctrl->default_value;
++		break;
++	case V4L2_CTRL_TYPE_INTEGER:
++	case V4L2_CTRL_TYPE_INTEGER_MENU:
++	case V4L2_CTRL_TYPE_MENU:
++	case V4L2_CTRL_TYPE_BITMASK:
++	case V4L2_CTRL_TYPE_BOOLEAN:
++		ptr.p_s32[idx] = ctrl->default_value;
++		break;
++	case V4L2_CTRL_TYPE_BUTTON:
++	case V4L2_CTRL_TYPE_CTRL_CLASS:
++		ptr.p_s32[idx] = 0;
++		break;
++	case V4L2_CTRL_TYPE_U8:
++		ptr.p_u8[idx] = ctrl->default_value;
++		break;
++	case V4L2_CTRL_TYPE_U16:
++		ptr.p_u16[idx] = ctrl->default_value;
++		break;
++	case V4L2_CTRL_TYPE_U32:
++		ptr.p_u32[idx] = ctrl->default_value;
++		break;
++	default:
++		std_init_compound(ctrl, idx, ptr);
++		break;
++	}
++}
++
++static void std_log(const struct v4l2_ctrl *ctrl)
++{
++	union v4l2_ctrl_ptr ptr = ctrl->p_cur;
++
++	if (ctrl->is_array) {
++		unsigned i;
++
++		for (i = 0; i < ctrl->nr_of_dims; i++)
++			pr_cont("[%u]", ctrl->dims[i]);
++		pr_cont(" ");
++	}
++
++	switch (ctrl->type) {
++	case V4L2_CTRL_TYPE_INTEGER:
++		pr_cont("%d", *ptr.p_s32);
++		break;
++	case V4L2_CTRL_TYPE_BOOLEAN:
++		pr_cont("%s", *ptr.p_s32 ? "true" : "false");
++		break;
++	case V4L2_CTRL_TYPE_MENU:
++		pr_cont("%s", ctrl->qmenu[*ptr.p_s32]);
++		break;
++	case V4L2_CTRL_TYPE_INTEGER_MENU:
++		pr_cont("%lld", ctrl->qmenu_int[*ptr.p_s32]);
++		break;
++	case V4L2_CTRL_TYPE_BITMASK:
++		pr_cont("0x%08x", *ptr.p_s32);
++		break;
++	case V4L2_CTRL_TYPE_INTEGER64:
++		pr_cont("%lld", *ptr.p_s64);
++		break;
++	case V4L2_CTRL_TYPE_STRING:
++		pr_cont("%s", ptr.p_char);
++		break;
++	case V4L2_CTRL_TYPE_U8:
++		pr_cont("%u", (unsigned)*ptr.p_u8);
++		break;
++	case V4L2_CTRL_TYPE_U16:
++		pr_cont("%u", (unsigned)*ptr.p_u16);
++		break;
++	case V4L2_CTRL_TYPE_U32:
++		pr_cont("%u", (unsigned)*ptr.p_u32);
++		break;
++	case V4L2_CTRL_TYPE_H264_SPS:
++		pr_cont("H264_SPS");
++		break;
++	case V4L2_CTRL_TYPE_H264_PPS:
++		pr_cont("H264_PPS");
++		break;
++	case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
++		pr_cont("H264_SCALING_MATRIX");
++		break;
++	case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
++		pr_cont("H264_SLICE_PARAMS");
++		break;
++	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
++		pr_cont("H264_DECODE_PARAMS");
++		break;
++	case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
++		pr_cont("H264_PRED_WEIGHTS");
++		break;
++	case V4L2_CTRL_TYPE_FWHT_PARAMS:
++		pr_cont("FWHT_PARAMS");
++		break;
++	case V4L2_CTRL_TYPE_VP8_FRAME:
++		pr_cont("VP8_FRAME");
++		break;
++	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
++		pr_cont("HDR10_CLL_INFO");
++		break;
++	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
++		pr_cont("HDR10_MASTERING_DISPLAY");
++		break;
++	default:
++		pr_cont("unknown type %d", ctrl->type);
++		break;
++	}
++}
++
++/*
++ * Round towards the closest legal value. Be careful when we are
++ * close to the maximum range of the control type to prevent
++ * wrap-arounds.
++ */
++#define ROUND_TO_RANGE(val, offset_type, ctrl)			\
++({								\
++	offset_type offset;					\
++	if ((ctrl)->maximum >= 0 &&				\
++	    val >= (ctrl)->maximum - (s32)((ctrl)->step / 2))	\
++		val = (ctrl)->maximum;				\
++	else							\
++		val += (s32)((ctrl)->step / 2);			\
++	val = clamp_t(typeof(val), val,				\
++		      (ctrl)->minimum, (ctrl)->maximum);	\
++	offset = (val) - (ctrl)->minimum;			\
++	offset = (ctrl)->step * (offset / (u32)(ctrl)->step);	\
++	val = (ctrl)->minimum + offset;				\
++	0;							\
++})
++
++/* Validate a new control */
++
++#define zero_padding(s) \
++	memset(&(s).padding, 0, sizeof((s).padding))
++#define zero_reserved(s) \
++	memset(&(s).reserved, 0, sizeof((s).reserved))
++
++/*
++ * Compound controls validation requires setting unused fields/flags to zero
++ * in order to properly detect unchanged controls with std_equal's memcmp.
++ */
++static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
++				 union v4l2_ctrl_ptr ptr)
++{
++	struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
++	struct v4l2_ctrl_vp8_frame *p_vp8_frame;
++	struct v4l2_ctrl_fwht_params *p_fwht_params;
++	struct v4l2_ctrl_h264_sps *p_h264_sps;
++	struct v4l2_ctrl_h264_pps *p_h264_pps;
++	struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights;
++	struct v4l2_ctrl_h264_slice_params *p_h264_slice_params;
++	struct v4l2_ctrl_h264_decode_params *p_h264_dec_params;
++	struct v4l2_ctrl_hevc_sps *p_hevc_sps;
++	struct v4l2_ctrl_hevc_pps *p_hevc_pps;
++	struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
++	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
++	struct v4l2_area *area;
++	void *p = ptr.p + idx * ctrl->elem_size;
++	unsigned int i;
++
++	switch ((u32)ctrl->type) {
++	case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
++		p_mpeg2_slice_params = p;
++
++		switch (p_mpeg2_slice_params->sequence.chroma_format) {
++		case 1: /* 4:2:0 */
++		case 2: /* 4:2:2 */
++		case 3: /* 4:4:4 */
++			break;
++		default:
++			return -EINVAL;
++		}
++
++		switch (p_mpeg2_slice_params->picture.intra_dc_precision) {
++		case 0: /* 8 bits */
++		case 1: /* 9 bits */
++		case 2: /* 10 bits */
++		case 3: /* 11 bits */
++			break;
++		default:
++			return -EINVAL;
++		}
++
++		switch (p_mpeg2_slice_params->picture.picture_structure) {
++		case 1: /* interlaced top field */
++		case 2: /* interlaced bottom field */
++		case 3: /* progressive */
++			break;
++		default:
++			return -EINVAL;
++		}
++
++		switch (p_mpeg2_slice_params->picture.picture_coding_type) {
++		case V4L2_MPEG2_PICTURE_CODING_TYPE_I:
++		case V4L2_MPEG2_PICTURE_CODING_TYPE_P:
++		case V4L2_MPEG2_PICTURE_CODING_TYPE_B:
++			break;
++		default:
++			return -EINVAL;
++		}
++
++		break;
++
++	case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
++		break;
++
++	case V4L2_CTRL_TYPE_FWHT_PARAMS:
++		p_fwht_params = p;
++		if (p_fwht_params->version < V4L2_FWHT_VERSION)
++			return -EINVAL;
++		if (!p_fwht_params->width || !p_fwht_params->height)
++			return -EINVAL;
++		break;
++
++	case V4L2_CTRL_TYPE_H264_SPS:
++		p_h264_sps = p;
++
++		/* Some syntax elements are only conditionally valid */
++		if (p_h264_sps->pic_order_cnt_type != 0) {
++			p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 = 0;
++		} else if (p_h264_sps->pic_order_cnt_type != 1) {
++			p_h264_sps->num_ref_frames_in_pic_order_cnt_cycle = 0;
++			p_h264_sps->offset_for_non_ref_pic = 0;
++			p_h264_sps->offset_for_top_to_bottom_field = 0;
++			memset(&p_h264_sps->offset_for_ref_frame, 0,
++			       sizeof(p_h264_sps->offset_for_ref_frame));
++		}
++
++		if (!V4L2_H264_SPS_HAS_CHROMA_FORMAT(p_h264_sps)) {
++			p_h264_sps->chroma_format_idc = 1;
++			p_h264_sps->bit_depth_luma_minus8 = 0;
++			p_h264_sps->bit_depth_chroma_minus8 = 0;
++
++			p_h264_sps->flags &=
++				~V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS;
++
++			if (p_h264_sps->chroma_format_idc < 3)
++				p_h264_sps->flags &=
++					~V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE;
++		}
++
++		if (p_h264_sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY)
++			p_h264_sps->flags &=
++				~V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD;
++
++		/*
++		 * Chroma 4:2:2 format require at least High 4:2:2 profile.
++		 *
++		 * The H264 specification and well-known parser implementations
++		 * use profile-idc values directly, as that is clearer and
++		 * less ambiguous. We do the same here.
++		 */
++		if (p_h264_sps->profile_idc < 122 &&
++		    p_h264_sps->chroma_format_idc > 1)
++			return -EINVAL;
++		/* Chroma 4:4:4 format require at least High 4:2:2 profile */
++		if (p_h264_sps->profile_idc < 244 &&
++		    p_h264_sps->chroma_format_idc > 2)
++			return -EINVAL;
++		if (p_h264_sps->chroma_format_idc > 3)
++			return -EINVAL;
++
++		if (p_h264_sps->bit_depth_luma_minus8 > 6)
++			return -EINVAL;
++		if (p_h264_sps->bit_depth_chroma_minus8 > 6)
++			return -EINVAL;
++		if (p_h264_sps->log2_max_frame_num_minus4 > 12)
++			return -EINVAL;
++		if (p_h264_sps->pic_order_cnt_type > 2)
++			return -EINVAL;
++		if (p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 > 12)
++			return -EINVAL;
++		if (p_h264_sps->max_num_ref_frames > V4L2_H264_REF_LIST_LEN)
++			return -EINVAL;
++		break;
++
++	case V4L2_CTRL_TYPE_H264_PPS:
++		p_h264_pps = p;
++
++		if (p_h264_pps->num_slice_groups_minus1 > 7)
++			return -EINVAL;
++		if (p_h264_pps->num_ref_idx_l0_default_active_minus1 >
++		    (V4L2_H264_REF_LIST_LEN - 1))
++			return -EINVAL;
++		if (p_h264_pps->num_ref_idx_l1_default_active_minus1 >
++		    (V4L2_H264_REF_LIST_LEN - 1))
++			return -EINVAL;
++		if (p_h264_pps->weighted_bipred_idc > 2)
++			return -EINVAL;
++		/*
++		 * pic_init_qp_minus26 shall be in the range of
++		 * -(26 + QpBdOffset_y) to +25, inclusive,
++		 *  where QpBdOffset_y is 6 * bit_depth_luma_minus8
++		 */
++		if (p_h264_pps->pic_init_qp_minus26 < -62 ||
++		    p_h264_pps->pic_init_qp_minus26 > 25)
++			return -EINVAL;
++		if (p_h264_pps->pic_init_qs_minus26 < -26 ||
++		    p_h264_pps->pic_init_qs_minus26 > 25)
++			return -EINVAL;
++		if (p_h264_pps->chroma_qp_index_offset < -12 ||
++		    p_h264_pps->chroma_qp_index_offset > 12)
++			return -EINVAL;
++		if (p_h264_pps->second_chroma_qp_index_offset < -12 ||
++		    p_h264_pps->second_chroma_qp_index_offset > 12)
++			return -EINVAL;
++		break;
++
++	case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
++		break;
++
++	case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
++		p_h264_pred_weights = p;
++
++		if (p_h264_pred_weights->luma_log2_weight_denom > 7)
++			return -EINVAL;
++		if (p_h264_pred_weights->chroma_log2_weight_denom > 7)
++			return -EINVAL;
++		break;
++
++	case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
++		p_h264_slice_params = p;
++
++		if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
++			p_h264_slice_params->flags &=
++				~V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED;
++
++		if (p_h264_slice_params->colour_plane_id > 2)
++			return -EINVAL;
++		if (p_h264_slice_params->cabac_init_idc > 2)
++			return -EINVAL;
++		if (p_h264_slice_params->disable_deblocking_filter_idc > 2)
++			return -EINVAL;
++		if (p_h264_slice_params->slice_alpha_c0_offset_div2 < -6 ||
++		    p_h264_slice_params->slice_alpha_c0_offset_div2 > 6)
++			return -EINVAL;
++		if (p_h264_slice_params->slice_beta_offset_div2 < -6 ||
++		    p_h264_slice_params->slice_beta_offset_div2 > 6)
++			return -EINVAL;
++
++		if (p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_I ||
++		    p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_SI)
++			p_h264_slice_params->num_ref_idx_l0_active_minus1 = 0;
++		if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
++			p_h264_slice_params->num_ref_idx_l1_active_minus1 = 0;
++
++		if (p_h264_slice_params->num_ref_idx_l0_active_minus1 >
++		    (V4L2_H264_REF_LIST_LEN - 1))
++			return -EINVAL;
++		if (p_h264_slice_params->num_ref_idx_l1_active_minus1 >
++		    (V4L2_H264_REF_LIST_LEN - 1))
++			return -EINVAL;
++		zero_reserved(*p_h264_slice_params);
++		break;
++
++	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
++		p_h264_dec_params = p;
++
++		if (p_h264_dec_params->nal_ref_idc > 3)
++			return -EINVAL;
++		for (i = 0; i < V4L2_H264_NUM_DPB_ENTRIES; i++) {
++			struct v4l2_h264_dpb_entry *dpb_entry =
++				&p_h264_dec_params->dpb[i];
++
++			zero_reserved(*dpb_entry);
++		}
++		zero_reserved(*p_h264_dec_params);
++		break;
++
++	case V4L2_CTRL_TYPE_VP8_FRAME:
++		p_vp8_frame = p;
++
++		switch (p_vp8_frame->num_dct_parts) {
++		case 1:
++		case 2:
++		case 4:
++		case 8:
++			break;
++		default:
++			return -EINVAL;
++		}
++		zero_padding(p_vp8_frame->segment);
++		zero_padding(p_vp8_frame->lf);
++		zero_padding(p_vp8_frame->quant);
++		zero_padding(p_vp8_frame->entropy);
++		zero_padding(p_vp8_frame->coder_state);
++		break;
++
++	case V4L2_CTRL_TYPE_HEVC_SPS:
++		p_hevc_sps = p;
++
++		if (!(p_hevc_sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) {
++			p_hevc_sps->pcm_sample_bit_depth_luma_minus1 = 0;
++			p_hevc_sps->pcm_sample_bit_depth_chroma_minus1 = 0;
++			p_hevc_sps->log2_min_pcm_luma_coding_block_size_minus3 = 0;
++			p_hevc_sps->log2_diff_max_min_pcm_luma_coding_block_size = 0;
++		}
++
++		if (!(p_hevc_sps->flags &
++		      V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT))
++			p_hevc_sps->num_long_term_ref_pics_sps = 0;
++		break;
++
++	case V4L2_CTRL_TYPE_HEVC_PPS:
++		p_hevc_pps = p;
++
++		if (!(p_hevc_pps->flags &
++		      V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED))
++			p_hevc_pps->diff_cu_qp_delta_depth = 0;
++
++		if (!(p_hevc_pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
++			p_hevc_pps->num_tile_columns_minus1 = 0;
++			p_hevc_pps->num_tile_rows_minus1 = 0;
++			memset(&p_hevc_pps->column_width_minus1, 0,
++			       sizeof(p_hevc_pps->column_width_minus1));
++			memset(&p_hevc_pps->row_height_minus1, 0,
++			       sizeof(p_hevc_pps->row_height_minus1));
++
++			p_hevc_pps->flags &=
++				~V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED;
++		}
++
++		if (p_hevc_pps->flags &
++		    V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER) {
++			p_hevc_pps->pps_beta_offset_div2 = 0;
++			p_hevc_pps->pps_tc_offset_div2 = 0;
++		}
++
++		zero_padding(*p_hevc_pps);
++		break;
++
++	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
++		p_hevc_slice_params = p;
++
++		if (p_hevc_slice_params->num_active_dpb_entries >
++		    V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
++			return -EINVAL;
++
++		zero_padding(p_hevc_slice_params->pred_weight_table);
++
++		for (i = 0; i < p_hevc_slice_params->num_active_dpb_entries;
++		     i++) {
++			struct v4l2_hevc_dpb_entry *dpb_entry =
++				&p_hevc_slice_params->dpb[i];
++
++			zero_padding(*dpb_entry);
++		}
++
++		zero_padding(*p_hevc_slice_params);
++		break;
++
++	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
++		break;
++
++	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
++		p_hdr10_mastering = p;
++
++		for (i = 0; i < 3; ++i) {
++			if (p_hdr10_mastering->display_primaries_x[i] <
++				V4L2_HDR10_MASTERING_PRIMARIES_X_LOW ||
++			    p_hdr10_mastering->display_primaries_x[i] >
++				V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH ||
++			    p_hdr10_mastering->display_primaries_y[i] <
++				V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW ||
++			    p_hdr10_mastering->display_primaries_y[i] >
++				V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH)
++				return -EINVAL;
++		}
++
++		if (p_hdr10_mastering->white_point_x <
++			V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW ||
++		    p_hdr10_mastering->white_point_x >
++			V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH ||
++		    p_hdr10_mastering->white_point_y <
++			V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW ||
++		    p_hdr10_mastering->white_point_y >
++			V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH)
++			return -EINVAL;
++
++		if (p_hdr10_mastering->max_display_mastering_luminance <
++			V4L2_HDR10_MASTERING_MAX_LUMA_LOW ||
++		    p_hdr10_mastering->max_display_mastering_luminance >
++			V4L2_HDR10_MASTERING_MAX_LUMA_HIGH ||
++		    p_hdr10_mastering->min_display_mastering_luminance <
++			V4L2_HDR10_MASTERING_MIN_LUMA_LOW ||
++		    p_hdr10_mastering->min_display_mastering_luminance >
++			V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
++			return -EINVAL;
++
++		/* The following restriction comes from ITU-T Rec. H.265 spec */
++		if (p_hdr10_mastering->max_display_mastering_luminance ==
++			V4L2_HDR10_MASTERING_MAX_LUMA_LOW &&
++		    p_hdr10_mastering->min_display_mastering_luminance ==
++			V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
++			return -EINVAL;
++
++		break;
++
++	case V4L2_CTRL_TYPE_AREA:
++		area = p;
++		if (!area->width || !area->height)
++			return -EINVAL;
++		break;
++
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx,
++			union v4l2_ctrl_ptr ptr)
++{
++	size_t len;
++	u64 offset;
++	s64 val;
++
++	switch ((u32)ctrl->type) {
++	case V4L2_CTRL_TYPE_INTEGER:
++		return ROUND_TO_RANGE(ptr.p_s32[idx], u32, ctrl);
++	case V4L2_CTRL_TYPE_INTEGER64:
++		/*
++		 * We can't use the ROUND_TO_RANGE define here due to
++		 * the u64 divide that needs special care.
++		 */
++		val = ptr.p_s64[idx];
++		if (ctrl->maximum >= 0 && val >= ctrl->maximum - (s64)(ctrl->step / 2))
++			val = ctrl->maximum;
++		else
++			val += (s64)(ctrl->step / 2);
++		val = clamp_t(s64, val, ctrl->minimum, ctrl->maximum);
++		offset = val - ctrl->minimum;
++		do_div(offset, ctrl->step);
++		ptr.p_s64[idx] = ctrl->minimum + offset * ctrl->step;
++		return 0;
++	case V4L2_CTRL_TYPE_U8:
++		return ROUND_TO_RANGE(ptr.p_u8[idx], u8, ctrl);
++	case V4L2_CTRL_TYPE_U16:
++		return ROUND_TO_RANGE(ptr.p_u16[idx], u16, ctrl);
++	case V4L2_CTRL_TYPE_U32:
++		return ROUND_TO_RANGE(ptr.p_u32[idx], u32, ctrl);
++
++	case V4L2_CTRL_TYPE_BOOLEAN:
++		ptr.p_s32[idx] = !!ptr.p_s32[idx];
++		return 0;
++
++	case V4L2_CTRL_TYPE_MENU:
++	case V4L2_CTRL_TYPE_INTEGER_MENU:
++		if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum)
++			return -ERANGE;
++		if (ptr.p_s32[idx] < BITS_PER_LONG_LONG &&
++		    (ctrl->menu_skip_mask & BIT_ULL(ptr.p_s32[idx])))
++			return -EINVAL;
++		if (ctrl->type == V4L2_CTRL_TYPE_MENU &&
++		    ctrl->qmenu[ptr.p_s32[idx]][0] == '\0')
++			return -EINVAL;
++		return 0;
++
++	case V4L2_CTRL_TYPE_BITMASK:
++		ptr.p_s32[idx] &= ctrl->maximum;
++		return 0;
++
++	case V4L2_CTRL_TYPE_BUTTON:
++	case V4L2_CTRL_TYPE_CTRL_CLASS:
++		ptr.p_s32[idx] = 0;
++		return 0;
++
++	case V4L2_CTRL_TYPE_STRING:
++		idx *= ctrl->elem_size;
++		len = strlen(ptr.p_char + idx);
++		if (len < ctrl->minimum)
++			return -ERANGE;
++		if ((len - (u32)ctrl->minimum) % (u32)ctrl->step)
++			return -ERANGE;
++		return 0;
++
++	default:
++		return std_validate_compound(ctrl, idx, ptr);
++	}
++}
++
++static const struct v4l2_ctrl_type_ops std_type_ops = {
++	.equal = std_equal,
++	.init = std_init,
++	.log = std_log,
++	.validate = std_validate,
++};
++
++/* Helper function: copy the given control value back to the caller */
++static int ptr_to_user(struct v4l2_ext_control *c,
++		       struct v4l2_ctrl *ctrl,
++		       union v4l2_ctrl_ptr ptr)
++{
++	u32 len;
++
++	if (ctrl->is_ptr && !ctrl->is_string)
++		return copy_to_user(c->ptr, ptr.p_const, c->size) ?
++		       -EFAULT : 0;
++
++	switch (ctrl->type) {
++	case V4L2_CTRL_TYPE_STRING:
++		len = strlen(ptr.p_char);
++		if (c->size < len + 1) {
++			c->size = ctrl->elem_size;
++			return -ENOSPC;
++		}
++		return copy_to_user(c->string, ptr.p_char, len + 1) ?
++		       -EFAULT : 0;
++	case V4L2_CTRL_TYPE_INTEGER64:
++		c->value64 = *ptr.p_s64;
++		break;
++	default:
++		c->value = *ptr.p_s32;
++		break;
++	}
++	return 0;
++}
++
++/* Helper function: copy the current control value back to the caller */
++static int cur_to_user(struct v4l2_ext_control *c,
++		       struct v4l2_ctrl *ctrl)
++{
++	return ptr_to_user(c, ctrl, ctrl->p_cur);
++}
++
++/* Helper function: copy the new control value back to the caller */
++static int new_to_user(struct v4l2_ext_control *c,
++		       struct v4l2_ctrl *ctrl)
++{
++	return ptr_to_user(c, ctrl, ctrl->p_new);
++}
++
++/* Helper function: copy the request value back to the caller */
++static int req_to_user(struct v4l2_ext_control *c,
++		       struct v4l2_ctrl_ref *ref)
++{
++	return ptr_to_user(c, ref->ctrl, ref->p_req);
++}
++
++/* Helper function: copy the initial control value back to the caller */
++static int def_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl)
++{
++	int idx;
++
++	for (idx = 0; idx < ctrl->elems; idx++)
++		ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
++
++	return ptr_to_user(c, ctrl, ctrl->p_new);
++}
++
++/* Helper function: copy the caller-provider value to the given control value */
++static int user_to_ptr(struct v4l2_ext_control *c,
++		       struct v4l2_ctrl *ctrl,
++		       union v4l2_ctrl_ptr ptr)
++{
++	int ret;
++	u32 size;
++
++	ctrl->is_new = 1;
++	if (ctrl->is_ptr && !ctrl->is_string) {
++		unsigned idx;
++
++		ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0;
++		if (ret || !ctrl->is_array)
++			return ret;
++		for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++)
++			ctrl->type_ops->init(ctrl, idx, ptr);
++		return 0;
++	}
++
++	switch (ctrl->type) {
++	case V4L2_CTRL_TYPE_INTEGER64:
++		*ptr.p_s64 = c->value64;
++		break;
++	case V4L2_CTRL_TYPE_STRING:
++		size = c->size;
++		if (size == 0)
++			return -ERANGE;
++		if (size > ctrl->maximum + 1)
++			size = ctrl->maximum + 1;
++		ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0;
++		if (!ret) {
++			char last = ptr.p_char[size - 1];
++
++			ptr.p_char[size - 1] = 0;
++			/* If the string was longer than ctrl->maximum,
++			   then return an error. */
++			if (strlen(ptr.p_char) == ctrl->maximum && last)
++				return -ERANGE;
++		}
++		return ret;
++	default:
++		*ptr.p_s32 = c->value;
++		break;
++	}
++	return 0;
++}
++
++/* Helper function: copy the caller-provider value as the new control value */
++static int user_to_new(struct v4l2_ext_control *c,
++		       struct v4l2_ctrl *ctrl)
++{
++	return user_to_ptr(c, ctrl, ctrl->p_new);
++}
++
++/* Copy the one value to another. */
++static void ptr_to_ptr(struct v4l2_ctrl *ctrl,
++		       union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to)
++{
++	if (ctrl == NULL)
++		return;
++	memcpy(to.p, from.p_const, ctrl->elems * ctrl->elem_size);
++}
++
++/* Copy the new value to the current value. */
++static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
++{
++	bool changed;
++
++	if (ctrl == NULL)
++		return;
++
++	/* has_changed is set by cluster_changed */
++	changed = ctrl->has_changed;
++	if (changed)
++		ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur);
++
++	if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) {
++		/* Note: CH_FLAGS is only set for auto clusters. */
++		ctrl->flags &=
++			~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE);
++		if (!is_cur_manual(ctrl->cluster[0])) {
++			ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
++			if (ctrl->cluster[0]->has_volatiles)
++				ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
++		}
++		fh = NULL;
++	}
++	if (changed || ch_flags) {
++		/* If a control was changed that was not one of the controls
++		   modified by the application, then send the event to all. */
++		if (!ctrl->is_new)
++			fh = NULL;
++		send_event(fh, ctrl,
++			(changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags);
++		if (ctrl->call_notify && changed && ctrl->handler->notify)
++			ctrl->handler->notify(ctrl, ctrl->handler->notify_priv);
++	}
++}
++
++/* Copy the current value to the new value */
++static void cur_to_new(struct v4l2_ctrl *ctrl)
++{
++	if (ctrl == NULL)
++		return;
++	ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new);
++}
++
++/* Copy the new value to the request value */
++static void new_to_req(struct v4l2_ctrl_ref *ref)
++{
++	if (!ref)
++		return;
++	ptr_to_ptr(ref->ctrl, ref->ctrl->p_new, ref->p_req);
++	ref->valid_p_req = true;
++}
++
++/* Copy the current value to the request value */
++static void cur_to_req(struct v4l2_ctrl_ref *ref)
++{
++	if (!ref)
++		return;
++	ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->p_req);
++	ref->valid_p_req = true;
++}
++
++/* Copy the request value to the new value */
++static void req_to_new(struct v4l2_ctrl_ref *ref)
++{
++	if (!ref)
++		return;
++	if (ref->valid_p_req)
++		ptr_to_ptr(ref->ctrl, ref->p_req, ref->ctrl->p_new);
++	else
++		ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->ctrl->p_new);
++}
++
++/* Return non-zero if one or more of the controls in the cluster has a new
++   value that differs from the current value. */
++static int cluster_changed(struct v4l2_ctrl *master)
++{
++	bool changed = false;
++	unsigned idx;
++	int i;
++
++	for (i = 0; i < master->ncontrols; i++) {
++		struct v4l2_ctrl *ctrl = master->cluster[i];
++		bool ctrl_changed = false;
++
++		if (ctrl == NULL)
++			continue;
++
++		if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE)
++			changed = ctrl_changed = true;
++
++		/*
++		 * Set has_changed to false to avoid generating
++		 * the event V4L2_EVENT_CTRL_CH_VALUE
++		 */
++		if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
++			ctrl->has_changed = false;
++			continue;
++		}
++
++		for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++)
++			ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
++				ctrl->p_cur, ctrl->p_new);
++		ctrl->has_changed = ctrl_changed;
++		changed |= ctrl->has_changed;
++	}
++	return changed;
++}
++
++/* Control range checking */
++static int check_range(enum v4l2_ctrl_type type,
++		s64 min, s64 max, u64 step, s64 def)
++{
++	switch (type) {
++	case V4L2_CTRL_TYPE_BOOLEAN:
++		if (step != 1 || max > 1 || min < 0)
++			return -ERANGE;
++		fallthrough;
++	case V4L2_CTRL_TYPE_U8:
++	case V4L2_CTRL_TYPE_U16:
++	case V4L2_CTRL_TYPE_U32:
++	case V4L2_CTRL_TYPE_INTEGER:
++	case V4L2_CTRL_TYPE_INTEGER64:
++		if (step == 0 || min > max || def < min || def > max)
++			return -ERANGE;
++		return 0;
++	case V4L2_CTRL_TYPE_BITMASK:
++		if (step || min || !max || (def & ~max))
++			return -ERANGE;
++		return 0;
++	case V4L2_CTRL_TYPE_MENU:
++	case V4L2_CTRL_TYPE_INTEGER_MENU:
++		if (min > max || def < min || def > max)
++			return -ERANGE;
++		/* Note: step == menu_skip_mask for menu controls.
++		   So here we check if the default value is masked out. */
++		if (step && ((1 << def) & step))
++			return -EINVAL;
++		return 0;
++	case V4L2_CTRL_TYPE_STRING:
++		if (min > max || min < 0 || step < 1 || def)
++			return -ERANGE;
++		return 0;
++	default:
++		return 0;
++	}
++}
++
++/* Validate a new control */
++static int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new)
++{
++	unsigned idx;
++	int err = 0;
++
++	for (idx = 0; !err && idx < ctrl->elems; idx++)
++		err = ctrl->type_ops->validate(ctrl, idx, p_new);
++	return err;
++}
++
++static inline u32 node2id(struct list_head *node)
++{
++	return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id;
++}
++
++/* Set the handler's error code if it wasn't set earlier already */
++static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err)
++{
++	if (hdl->error == 0)
++		hdl->error = err;
++	return err;
++}
++
++/* Initialize the handler */
++int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,
++				 unsigned nr_of_controls_hint,
++				 struct lock_class_key *key, const char *name)
++{
++	mutex_init(&hdl->_lock);
++	hdl->lock = &hdl->_lock;
++	lockdep_set_class_and_name(hdl->lock, key, name);
++	INIT_LIST_HEAD(&hdl->ctrls);
++	INIT_LIST_HEAD(&hdl->ctrl_refs);
++	INIT_LIST_HEAD(&hdl->requests);
++	INIT_LIST_HEAD(&hdl->requests_queued);
++	hdl->request_is_queued = false;
++	hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8;
++	hdl->buckets = kvmalloc_array(hdl->nr_of_buckets,
++				      sizeof(hdl->buckets[0]),
++				      GFP_KERNEL | __GFP_ZERO);
++	hdl->error = hdl->buckets ? 0 : -ENOMEM;
++	media_request_object_init(&hdl->req_obj);
++	return hdl->error;
++}
++EXPORT_SYMBOL(v4l2_ctrl_handler_init_class);
++
++/* Free all controls and control refs */
++void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl)
++{
++	struct v4l2_ctrl_ref *ref, *next_ref;
++	struct v4l2_ctrl *ctrl, *next_ctrl;
++	struct v4l2_subscribed_event *sev, *next_sev;
++
++	if (hdl == NULL || hdl->buckets == NULL)
++		return;
++
++	/*
++	 * If the main handler is freed and it is used by handler objects in
++	 * outstanding requests, then unbind and put those objects before
++	 * freeing the main handler.
++	 *
++	 * The main handler can be identified by having a NULL ops pointer in
++	 * the request object.
++	 */
++	if (!hdl->req_obj.ops && !list_empty(&hdl->requests)) {
++		struct v4l2_ctrl_handler *req, *next_req;
++
++		list_for_each_entry_safe(req, next_req, &hdl->requests, requests) {
++			media_request_object_unbind(&req->req_obj);
++			media_request_object_put(&req->req_obj);
++		}
++	}
++	mutex_lock(hdl->lock);
++	/* Free all nodes */
++	list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) {
++		list_del(&ref->node);
++		kfree(ref);
++	}
++	/* Free all controls owned by the handler */
++	list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) {
++		list_del(&ctrl->node);
++		list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node)
++			list_del(&sev->node);
++		kvfree(ctrl);
++	}
++	kvfree(hdl->buckets);
++	hdl->buckets = NULL;
++	hdl->cached = NULL;
++	hdl->error = 0;
++	mutex_unlock(hdl->lock);
++	mutex_destroy(&hdl->_lock);
++}
++EXPORT_SYMBOL(v4l2_ctrl_handler_free);
++
++/* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer
++   be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing
++   with applications that do not use the NEXT_CTRL flag.
++
++   We just find the n-th private user control. It's O(N), but that should not
++   be an issue in this particular case. */
++static struct v4l2_ctrl_ref *find_private_ref(
++		struct v4l2_ctrl_handler *hdl, u32 id)
++{
++	struct v4l2_ctrl_ref *ref;
++
++	id -= V4L2_CID_PRIVATE_BASE;
++	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
++		/* Search for private user controls that are compatible with
++		   VIDIOC_G/S_CTRL. */
++		if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER &&
++		    V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) {
++			if (!ref->ctrl->is_int)
++				continue;
++			if (id == 0)
++				return ref;
++			id--;
++		}
++	}
++	return NULL;
++}
++
++/* Find a control with the given ID. */
++static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id)
++{
++	struct v4l2_ctrl_ref *ref;
++	int bucket;
++
++	id &= V4L2_CTRL_ID_MASK;
++
++	/* Old-style private controls need special handling */
++	if (id >= V4L2_CID_PRIVATE_BASE)
++		return find_private_ref(hdl, id);
++	bucket = id % hdl->nr_of_buckets;
++
++	/* Simple optimization: cache the last control found */
++	if (hdl->cached && hdl->cached->ctrl->id == id)
++		return hdl->cached;
++
++	/* Not in cache, search the hash */
++	ref = hdl->buckets ? hdl->buckets[bucket] : NULL;
++	while (ref && ref->ctrl->id != id)
++		ref = ref->next;
++
++	if (ref)
++		hdl->cached = ref; /* cache it! */
++	return ref;
++}
++
++/* Find a control with the given ID. Take the handler's lock first. */
++static struct v4l2_ctrl_ref *find_ref_lock(
++		struct v4l2_ctrl_handler *hdl, u32 id)
++{
++	struct v4l2_ctrl_ref *ref = NULL;
++
++	if (hdl) {
++		mutex_lock(hdl->lock);
++		ref = find_ref(hdl, id);
++		mutex_unlock(hdl->lock);
++	}
++	return ref;
++}
++
++/* Find a control with the given ID. */
++struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
++{
++	struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
++
++	return ref ? ref->ctrl : NULL;
++}
++EXPORT_SYMBOL(v4l2_ctrl_find);
++
++/* Allocate a new v4l2_ctrl_ref and hook it into the handler. */
++static int handler_new_ref(struct v4l2_ctrl_handler *hdl,
++			   struct v4l2_ctrl *ctrl,
++			   struct v4l2_ctrl_ref **ctrl_ref,
++			   bool from_other_dev, bool allocate_req)
++{
++	struct v4l2_ctrl_ref *ref;
++	struct v4l2_ctrl_ref *new_ref;
++	u32 id = ctrl->id;
++	u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1;
++	int bucket = id % hdl->nr_of_buckets;	/* which bucket to use */
++	unsigned int size_extra_req = 0;
++
++	if (ctrl_ref)
++		*ctrl_ref = NULL;
++
++	/*
++	 * Automatically add the control class if it is not yet present and
++	 * the new control is not a compound control.
++	 */
++	if (ctrl->type < V4L2_CTRL_COMPOUND_TYPES &&
++	    id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL)
++		if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0))
++			return hdl->error;
++
++	if (hdl->error)
++		return hdl->error;
++
++	if (allocate_req)
++		size_extra_req = ctrl->elems * ctrl->elem_size;
++	new_ref = kzalloc(sizeof(*new_ref) + size_extra_req, GFP_KERNEL);
++	if (!new_ref)
++		return handler_set_err(hdl, -ENOMEM);
++	new_ref->ctrl = ctrl;
++	new_ref->from_other_dev = from_other_dev;
++	if (size_extra_req)
++		new_ref->p_req.p = &new_ref[1];
++
++	INIT_LIST_HEAD(&new_ref->node);
++
++	mutex_lock(hdl->lock);
++
++	/* Add immediately at the end of the list if the list is empty, or if
++	   the last element in the list has a lower ID.
++	   This ensures that when elements are added in ascending order the
++	   insertion is an O(1) operation. */
++	if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) {
++		list_add_tail(&new_ref->node, &hdl->ctrl_refs);
++		goto insert_in_hash;
++	}
++
++	/* Find insert position in sorted list */
++	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
++		if (ref->ctrl->id < id)
++			continue;
++		/* Don't add duplicates */
++		if (ref->ctrl->id == id) {
++			kfree(new_ref);
++			goto unlock;
++		}
++		list_add(&new_ref->node, ref->node.prev);
++		break;
++	}
++
++insert_in_hash:
++	/* Insert the control node in the hash */
++	new_ref->next = hdl->buckets[bucket];
++	hdl->buckets[bucket] = new_ref;
++	if (ctrl_ref)
++		*ctrl_ref = new_ref;
++	if (ctrl->handler == hdl) {
++		/* By default each control starts in a cluster of its own.
++		 * new_ref->ctrl is basically a cluster array with one
++		 * element, so that's perfect to use as the cluster pointer.
++		 * But only do this for the handler that owns the control.
++		 */
++		ctrl->cluster = &new_ref->ctrl;
++		ctrl->ncontrols = 1;
++	}
++
++unlock:
++	mutex_unlock(hdl->lock);
++	return 0;
++}
++
++/* Add a new control */
++static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
++			const struct v4l2_ctrl_ops *ops,
++			const struct v4l2_ctrl_type_ops *type_ops,
++			u32 id, const char *name, enum v4l2_ctrl_type type,
++			s64 min, s64 max, u64 step, s64 def,
++			const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size,
++			u32 flags, const char * const *qmenu,
++			const s64 *qmenu_int, const union v4l2_ctrl_ptr p_def,
++			void *priv)
++{
++	struct v4l2_ctrl *ctrl;
++	unsigned sz_extra;
++	unsigned nr_of_dims = 0;
++	unsigned elems = 1;
++	bool is_array;
++	unsigned tot_ctrl_size;
++	unsigned idx;
++	void *data;
++	int err;
++
++	if (hdl->error)
++		return NULL;
++
++	while (dims && dims[nr_of_dims]) {
++		elems *= dims[nr_of_dims];
++		nr_of_dims++;
++		if (nr_of_dims == V4L2_CTRL_MAX_DIMS)
++			break;
++	}
++	is_array = nr_of_dims > 0;
++
++	/* Prefill elem_size for all types handled by std_type_ops */
++	switch ((u32)type) {
++	case V4L2_CTRL_TYPE_INTEGER64:
++		elem_size = sizeof(s64);
++		break;
++	case V4L2_CTRL_TYPE_STRING:
++		elem_size = max + 1;
++		break;
++	case V4L2_CTRL_TYPE_U8:
++		elem_size = sizeof(u8);
++		break;
++	case V4L2_CTRL_TYPE_U16:
++		elem_size = sizeof(u16);
++		break;
++	case V4L2_CTRL_TYPE_U32:
++		elem_size = sizeof(u32);
++		break;
++	case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
++		elem_size = sizeof(struct v4l2_ctrl_mpeg2_slice_params);
++		break;
++	case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
++		elem_size = sizeof(struct v4l2_ctrl_mpeg2_quantization);
++		break;
++	case V4L2_CTRL_TYPE_FWHT_PARAMS:
++		elem_size = sizeof(struct v4l2_ctrl_fwht_params);
++		break;
++	case V4L2_CTRL_TYPE_H264_SPS:
++		elem_size = sizeof(struct v4l2_ctrl_h264_sps);
++		break;
++	case V4L2_CTRL_TYPE_H264_PPS:
++		elem_size = sizeof(struct v4l2_ctrl_h264_pps);
++		break;
++	case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
++		elem_size = sizeof(struct v4l2_ctrl_h264_scaling_matrix);
++		break;
++	case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
++		elem_size = sizeof(struct v4l2_ctrl_h264_slice_params);
++		break;
++	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
++		elem_size = sizeof(struct v4l2_ctrl_h264_decode_params);
++		break;
++	case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
++		elem_size = sizeof(struct v4l2_ctrl_h264_pred_weights);
++		break;
++	case V4L2_CTRL_TYPE_VP8_FRAME:
++		elem_size = sizeof(struct v4l2_ctrl_vp8_frame);
++		break;
++	case V4L2_CTRL_TYPE_HEVC_SPS:
++		elem_size = sizeof(struct v4l2_ctrl_hevc_sps);
++		break;
++	case V4L2_CTRL_TYPE_HEVC_PPS:
++		elem_size = sizeof(struct v4l2_ctrl_hevc_pps);
++		break;
++	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
++		elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
++		break;
++	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
++		elem_size = sizeof(struct v4l2_ctrl_hdr10_cll_info);
++		break;
++	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
++		elem_size = sizeof(struct v4l2_ctrl_hdr10_mastering_display);
++		break;
++	case V4L2_CTRL_TYPE_AREA:
++		elem_size = sizeof(struct v4l2_area);
++		break;
++	default:
++		if (type < V4L2_CTRL_COMPOUND_TYPES)
++			elem_size = sizeof(s32);
++		break;
++	}
++	tot_ctrl_size = elem_size * elems;
++
++	/* Sanity checks */
++	if (id == 0 || name == NULL || !elem_size ||
++	    id >= V4L2_CID_PRIVATE_BASE ||
++	    (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) ||
++	    (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) {
++		handler_set_err(hdl, -ERANGE);
++		return NULL;
++	}
++	err = check_range(type, min, max, step, def);
++	if (err) {
++		handler_set_err(hdl, err);
++		return NULL;
++	}
++	if (is_array &&
++	    (type == V4L2_CTRL_TYPE_BUTTON ||
++	     type == V4L2_CTRL_TYPE_CTRL_CLASS)) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++
++	sz_extra = 0;
++	if (type == V4L2_CTRL_TYPE_BUTTON)
++		flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
++			V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
++	else if (type == V4L2_CTRL_TYPE_CTRL_CLASS)
++		flags |= V4L2_CTRL_FLAG_READ_ONLY;
++	else if (type == V4L2_CTRL_TYPE_INTEGER64 ||
++		 type == V4L2_CTRL_TYPE_STRING ||
++		 type >= V4L2_CTRL_COMPOUND_TYPES ||
++		 is_array)
++		sz_extra += 2 * tot_ctrl_size;
++
++	if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const)
++		sz_extra += elem_size;
++
++	ctrl = kvzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL);
++	if (ctrl == NULL) {
++		handler_set_err(hdl, -ENOMEM);
++		return NULL;
++	}
++
++	INIT_LIST_HEAD(&ctrl->node);
++	INIT_LIST_HEAD(&ctrl->ev_subs);
++	ctrl->handler = hdl;
++	ctrl->ops = ops;
++	ctrl->type_ops = type_ops ? type_ops : &std_type_ops;
++	ctrl->id = id;
++	ctrl->name = name;
++	ctrl->type = type;
++	ctrl->flags = flags;
++	ctrl->minimum = min;
++	ctrl->maximum = max;
++	ctrl->step = step;
++	ctrl->default_value = def;
++	ctrl->is_string = !is_array && type == V4L2_CTRL_TYPE_STRING;
++	ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string;
++	ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64;
++	ctrl->is_array = is_array;
++	ctrl->elems = elems;
++	ctrl->nr_of_dims = nr_of_dims;
++	if (nr_of_dims)
++		memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0]));
++	ctrl->elem_size = elem_size;
++	if (type == V4L2_CTRL_TYPE_MENU)
++		ctrl->qmenu = qmenu;
++	else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
++		ctrl->qmenu_int = qmenu_int;
++	ctrl->priv = priv;
++	ctrl->cur.val = ctrl->val = def;
++	data = &ctrl[1];
++
++	if (!ctrl->is_int) {
++		ctrl->p_new.p = data;
++		ctrl->p_cur.p = data + tot_ctrl_size;
++	} else {
++		ctrl->p_new.p = &ctrl->val;
++		ctrl->p_cur.p = &ctrl->cur.val;
++	}
++
++	if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) {
++		ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size;
++		memcpy(ctrl->p_def.p, p_def.p_const, elem_size);
++	}
++
++	for (idx = 0; idx < elems; idx++) {
++		ctrl->type_ops->init(ctrl, idx, ctrl->p_cur);
++		ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
++	}
++
++	if (handler_new_ref(hdl, ctrl, NULL, false, false)) {
++		kvfree(ctrl);
++		return NULL;
++	}
++	mutex_lock(hdl->lock);
++	list_add_tail(&ctrl->node, &hdl->ctrls);
++	mutex_unlock(hdl->lock);
++	return ctrl;
++}
++
++struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
++			const struct v4l2_ctrl_config *cfg, void *priv)
++{
++	bool is_menu;
++	struct v4l2_ctrl *ctrl;
++	const char *name = cfg->name;
++	const char * const *qmenu = cfg->qmenu;
++	const s64 *qmenu_int = cfg->qmenu_int;
++	enum v4l2_ctrl_type type = cfg->type;
++	u32 flags = cfg->flags;
++	s64 min = cfg->min;
++	s64 max = cfg->max;
++	u64 step = cfg->step;
++	s64 def = cfg->def;
++
++	if (name == NULL)
++		v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step,
++								&def, &flags);
++
++	is_menu = (type == V4L2_CTRL_TYPE_MENU ||
++		   type == V4L2_CTRL_TYPE_INTEGER_MENU);
++	if (is_menu)
++		WARN_ON(step);
++	else
++		WARN_ON(cfg->menu_skip_mask);
++	if (type == V4L2_CTRL_TYPE_MENU && !qmenu) {
++		qmenu = v4l2_ctrl_get_menu(cfg->id);
++	} else if (type == V4L2_CTRL_TYPE_INTEGER_MENU && !qmenu_int) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++
++	ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name,
++			type, min, max,
++			is_menu ? cfg->menu_skip_mask : step, def,
++			cfg->dims, cfg->elem_size,
++			flags, qmenu, qmenu_int, cfg->p_def, priv);
++	if (ctrl)
++		ctrl->is_private = cfg->is_private;
++	return ctrl;
++}
++EXPORT_SYMBOL(v4l2_ctrl_new_custom);
++
++/* Helper function for standard non-menu controls */
++struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
++			const struct v4l2_ctrl_ops *ops,
++			u32 id, s64 min, s64 max, u64 step, s64 def)
++{
++	const char *name;
++	enum v4l2_ctrl_type type;
++	u32 flags;
++
++	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
++	if (type == V4L2_CTRL_TYPE_MENU ||
++	    type == V4L2_CTRL_TYPE_INTEGER_MENU ||
++	    type >= V4L2_CTRL_COMPOUND_TYPES) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
++			     min, max, step, def, NULL, 0,
++			     flags, NULL, NULL, ptr_null, NULL);
++}
++EXPORT_SYMBOL(v4l2_ctrl_new_std);
++
++/* Helper function for standard menu controls */
++struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
++			const struct v4l2_ctrl_ops *ops,
++			u32 id, u8 _max, u64 mask, u8 _def)
++{
++	const char * const *qmenu = NULL;
++	const s64 *qmenu_int = NULL;
++	unsigned int qmenu_int_len = 0;
++	const char *name;
++	enum v4l2_ctrl_type type;
++	s64 min;
++	s64 max = _max;
++	s64 def = _def;
++	u64 step;
++	u32 flags;
++
++	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
++
++	if (type == V4L2_CTRL_TYPE_MENU)
++		qmenu = v4l2_ctrl_get_menu(id);
++	else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
++		qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len);
++
++	if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
++			     0, max, mask, def, NULL, 0,
++			     flags, qmenu, qmenu_int, ptr_null, NULL);
++}
++EXPORT_SYMBOL(v4l2_ctrl_new_std_menu);
++
++/* Helper function for standard menu controls with driver defined menu */
++struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl,
++			const struct v4l2_ctrl_ops *ops, u32 id, u8 _max,
++			u64 mask, u8 _def, const char * const *qmenu)
++{
++	enum v4l2_ctrl_type type;
++	const char *name;
++	u32 flags;
++	u64 step;
++	s64 min;
++	s64 max = _max;
++	s64 def = _def;
++
++	/* v4l2_ctrl_new_std_menu_items() should only be called for
++	 * standard controls without a standard menu.
++	 */
++	if (v4l2_ctrl_get_menu(id)) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++
++	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
++	if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
++			     0, max, mask, def, NULL, 0,
++			     flags, qmenu, NULL, ptr_null, NULL);
++
++}
++EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items);
++
++/* Helper function for standard compound controls */
++struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl,
++				const struct v4l2_ctrl_ops *ops, u32 id,
++				const union v4l2_ctrl_ptr p_def)
++{
++	const char *name;
++	enum v4l2_ctrl_type type;
++	u32 flags;
++	s64 min, max, step, def;
++
++	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
++	if (type < V4L2_CTRL_COMPOUND_TYPES) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
++			     min, max, step, def, NULL, 0,
++			     flags, NULL, NULL, p_def, NULL);
++}
++EXPORT_SYMBOL(v4l2_ctrl_new_std_compound);
++
++/* Helper function for standard integer menu controls */
++struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
++			const struct v4l2_ctrl_ops *ops,
++			u32 id, u8 _max, u8 _def, const s64 *qmenu_int)
++{
++	const char *name;
++	enum v4l2_ctrl_type type;
++	s64 min;
++	u64 step;
++	s64 max = _max;
++	s64 def = _def;
++	u32 flags;
++
++	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
++	if (type != V4L2_CTRL_TYPE_INTEGER_MENU) {
++		handler_set_err(hdl, -EINVAL);
++		return NULL;
++	}
++	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
++			     0, max, 0, def, NULL, 0,
++			     flags, NULL, qmenu_int, ptr_null, NULL);
++}
++EXPORT_SYMBOL(v4l2_ctrl_new_int_menu);
++
++/* Add the controls from another handler to our own. */
++int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl,
++			  struct v4l2_ctrl_handler *add,
++			  bool (*filter)(const struct v4l2_ctrl *ctrl),
++			  bool from_other_dev)
++{
++	struct v4l2_ctrl_ref *ref;
++	int ret = 0;
++
++	/* Do nothing if either handler is NULL or if they are the same */
++	if (!hdl || !add || hdl == add)
++		return 0;
++	if (hdl->error)
++		return hdl->error;
++	mutex_lock(add->lock);
++	list_for_each_entry(ref, &add->ctrl_refs, node) {
++		struct v4l2_ctrl *ctrl = ref->ctrl;
++
++		/* Skip handler-private controls. */
++		if (ctrl->is_private)
++			continue;
++		/* And control classes */
++		if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
++			continue;
++		/* Filter any unwanted controls */
++		if (filter && !filter(ctrl))
++			continue;
++		ret = handler_new_ref(hdl, ctrl, NULL, from_other_dev, false);
++		if (ret)
++			break;
++	}
++	mutex_unlock(add->lock);
++	return ret;
++}
++EXPORT_SYMBOL(v4l2_ctrl_add_handler);
++
++bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl)
++{
++	if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX)
++		return true;
++	if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX)
++		return true;
++	switch (ctrl->id) {
++	case V4L2_CID_AUDIO_MUTE:
++	case V4L2_CID_AUDIO_VOLUME:
++	case V4L2_CID_AUDIO_BALANCE:
++	case V4L2_CID_AUDIO_BASS:
++	case V4L2_CID_AUDIO_TREBLE:
++	case V4L2_CID_AUDIO_LOUDNESS:
++		return true;
++	default:
++		break;
++	}
++	return false;
++}
++EXPORT_SYMBOL(v4l2_ctrl_radio_filter);
++
++/* Cluster controls */
++void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls)
++{
++	bool has_volatiles = false;
++	int i;
++
++	/* The first control is the master control and it must not be NULL */
++	if (WARN_ON(ncontrols == 0 || controls[0] == NULL))
++		return;
++
++	for (i = 0; i < ncontrols; i++) {
++		if (controls[i]) {
++			controls[i]->cluster = controls;
++			controls[i]->ncontrols = ncontrols;
++			if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE)
++				has_volatiles = true;
++		}
++	}
++	controls[0]->has_volatiles = has_volatiles;
++}
++EXPORT_SYMBOL(v4l2_ctrl_cluster);
++
++void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls,
++			    u8 manual_val, bool set_volatile)
++{
++	struct v4l2_ctrl *master = controls[0];
++	u32 flag = 0;
++	int i;
++
++	v4l2_ctrl_cluster(ncontrols, controls);
++	WARN_ON(ncontrols <= 1);
++	WARN_ON(manual_val < master->minimum || manual_val > master->maximum);
++	WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl));
++	master->is_auto = true;
++	master->has_volatiles = set_volatile;
++	master->manual_mode_value = manual_val;
++	master->flags |= V4L2_CTRL_FLAG_UPDATE;
++
++	if (!is_cur_manual(master))
++		flag = V4L2_CTRL_FLAG_INACTIVE |
++			(set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0);
++
++	for (i = 1; i < ncontrols; i++)
++		if (controls[i])
++			controls[i]->flags |= flag;
++}
++EXPORT_SYMBOL(v4l2_ctrl_auto_cluster);
++
++/* Activate/deactivate a control. */
++void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active)
++{
++	/* invert since the actual flag is called 'inactive' */
++	bool inactive = !active;
++	bool old;
++
++	if (ctrl == NULL)
++		return;
++
++	if (inactive)
++		/* set V4L2_CTRL_FLAG_INACTIVE */
++		old = test_and_set_bit(4, &ctrl->flags);
++	else
++		/* clear V4L2_CTRL_FLAG_INACTIVE */
++		old = test_and_clear_bit(4, &ctrl->flags);
++	if (old != inactive)
++		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
++}
++EXPORT_SYMBOL(v4l2_ctrl_activate);
++
++void __v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed)
++{
++	bool old;
++
++	if (ctrl == NULL)
++		return;
++
++	lockdep_assert_held(ctrl->handler->lock);
++
++	if (grabbed)
++		/* set V4L2_CTRL_FLAG_GRABBED */
++		old = test_and_set_bit(1, &ctrl->flags);
++	else
++		/* clear V4L2_CTRL_FLAG_GRABBED */
++		old = test_and_clear_bit(1, &ctrl->flags);
++	if (old != grabbed)
++		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
++}
++EXPORT_SYMBOL(__v4l2_ctrl_grab);
++
++/* Log the control name and value */
++static void log_ctrl(const struct v4l2_ctrl *ctrl,
++		     const char *prefix, const char *colon)
++{
++	if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY))
++		return;
++	if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
++		return;
++
++	pr_info("%s%s%s: ", prefix, colon, ctrl->name);
++
++	ctrl->type_ops->log(ctrl);
++
++	if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE |
++			   V4L2_CTRL_FLAG_GRABBED |
++			   V4L2_CTRL_FLAG_VOLATILE)) {
++		if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
++			pr_cont(" inactive");
++		if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)
++			pr_cont(" grabbed");
++		if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE)
++			pr_cont(" volatile");
++	}
++	pr_cont("\n");
++}
++
++/* Log all controls owned by the handler */
++void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl,
++				  const char *prefix)
++{
++	struct v4l2_ctrl *ctrl;
++	const char *colon = "";
++	int len;
++
++	if (hdl == NULL)
++		return;
++	if (prefix == NULL)
++		prefix = "";
++	len = strlen(prefix);
++	if (len && prefix[len - 1] != ' ')
++		colon = ": ";
++	mutex_lock(hdl->lock);
++	list_for_each_entry(ctrl, &hdl->ctrls, node)
++		if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED))
++			log_ctrl(ctrl, prefix, colon);
++	mutex_unlock(hdl->lock);
++}
++EXPORT_SYMBOL(v4l2_ctrl_handler_log_status);
++
++int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd)
++{
++	v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
++	return 0;
++}
++EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status);
++
++/* Call s_ctrl for all controls owned by the handler */
++int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
++{
++	struct v4l2_ctrl *ctrl;
++	int ret = 0;
++
++	if (hdl == NULL)
++		return 0;
++
++	lockdep_assert_held(hdl->lock);
++
++	list_for_each_entry(ctrl, &hdl->ctrls, node)
++		ctrl->done = false;
++
++	list_for_each_entry(ctrl, &hdl->ctrls, node) {
++		struct v4l2_ctrl *master = ctrl->cluster[0];
++		int i;
++
++		/* Skip if this control was already handled by a cluster. */
++		/* Skip button controls and read-only controls. */
++		if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON ||
++		    (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
++			continue;
++
++		for (i = 0; i < master->ncontrols; i++) {
++			if (master->cluster[i]) {
++				cur_to_new(master->cluster[i]);
++				master->cluster[i]->is_new = 1;
++				master->cluster[i]->done = true;
++			}
++		}
++		ret = call_op(master, s_ctrl);
++		if (ret)
++			break;
++	}
++
++	return ret;
++}
++EXPORT_SYMBOL_GPL(__v4l2_ctrl_handler_setup);
++
++int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
++{
++	int ret;
++
++	if (hdl == NULL)
++		return 0;
++
++	mutex_lock(hdl->lock);
++	ret = __v4l2_ctrl_handler_setup(hdl);
++	mutex_unlock(hdl->lock);
++
++	return ret;
++}
++EXPORT_SYMBOL(v4l2_ctrl_handler_setup);
++
++/* Implement VIDIOC_QUERY_EXT_CTRL */
++int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc)
++{
++	const unsigned next_flags = V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND;
++	u32 id = qc->id & V4L2_CTRL_ID_MASK;
++	struct v4l2_ctrl_ref *ref;
++	struct v4l2_ctrl *ctrl;
++
++	if (hdl == NULL)
++		return -EINVAL;
++
++	mutex_lock(hdl->lock);
++
++	/* Try to find it */
++	ref = find_ref(hdl, id);
++
++	if ((qc->id & next_flags) && !list_empty(&hdl->ctrl_refs)) {
++		bool is_compound;
++		/* Match any control that is not hidden */
++		unsigned mask = 1;
++		bool match = false;
++
++		if ((qc->id & next_flags) == V4L2_CTRL_FLAG_NEXT_COMPOUND) {
++			/* Match any hidden control */
++			match = true;
++		} else if ((qc->id & next_flags) == next_flags) {
++			/* Match any control, compound or not */
++			mask = 0;
++		}
++
++		/* Find the next control with ID > qc->id */
++
++		/* Did we reach the end of the control list? */
++		if (id >= node2id(hdl->ctrl_refs.prev)) {
++			ref = NULL; /* Yes, so there is no next control */
++		} else if (ref) {
++			/* We found a control with the given ID, so just get
++			   the next valid one in the list. */
++			list_for_each_entry_continue(ref, &hdl->ctrl_refs, node) {
++				is_compound = ref->ctrl->is_array ||
++					ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
++				if (id < ref->ctrl->id &&
++				    (is_compound & mask) == match)
++					break;
++			}
++			if (&ref->node == &hdl->ctrl_refs)
++				ref = NULL;
++		} else {
++			/* No control with the given ID exists, so start
++			   searching for the next largest ID. We know there
++			   is one, otherwise the first 'if' above would have
++			   been true. */
++			list_for_each_entry(ref, &hdl->ctrl_refs, node) {
++				is_compound = ref->ctrl->is_array ||
++					ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
++				if (id < ref->ctrl->id &&
++				    (is_compound & mask) == match)
++					break;
++			}
++			if (&ref->node == &hdl->ctrl_refs)
++				ref = NULL;
++		}
++	}
++	mutex_unlock(hdl->lock);
++
++	if (!ref)
++		return -EINVAL;
++
++	ctrl = ref->ctrl;
++	memset(qc, 0, sizeof(*qc));
++	if (id >= V4L2_CID_PRIVATE_BASE)
++		qc->id = id;
++	else
++		qc->id = ctrl->id;
++	strscpy(qc->name, ctrl->name, sizeof(qc->name));
++	qc->flags = user_flags(ctrl);
++	qc->type = ctrl->type;
++	qc->elem_size = ctrl->elem_size;
++	qc->elems = ctrl->elems;
++	qc->nr_of_dims = ctrl->nr_of_dims;
++	memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0]));
++	qc->minimum = ctrl->minimum;
++	qc->maximum = ctrl->maximum;
++	qc->default_value = ctrl->default_value;
++	if (ctrl->type == V4L2_CTRL_TYPE_MENU
++	    || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
++		qc->step = 1;
++	else
++		qc->step = ctrl->step;
++	return 0;
++}
++EXPORT_SYMBOL(v4l2_query_ext_ctrl);
++
++/* Implement VIDIOC_QUERYCTRL */
++int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
++{
++	struct v4l2_query_ext_ctrl qec = { qc->id };
++	int rc;
++
++	rc = v4l2_query_ext_ctrl(hdl, &qec);
++	if (rc)
++		return rc;
++
++	qc->id = qec.id;
++	qc->type = qec.type;
++	qc->flags = qec.flags;
++	strscpy(qc->name, qec.name, sizeof(qc->name));
++	switch (qc->type) {
++	case V4L2_CTRL_TYPE_INTEGER:
++	case V4L2_CTRL_TYPE_BOOLEAN:
++	case V4L2_CTRL_TYPE_MENU:
++	case V4L2_CTRL_TYPE_INTEGER_MENU:
++	case V4L2_CTRL_TYPE_STRING:
++	case V4L2_CTRL_TYPE_BITMASK:
++		qc->minimum = qec.minimum;
++		qc->maximum = qec.maximum;
++		qc->step = qec.step;
++		qc->default_value = qec.default_value;
++		break;
++	default:
++		qc->minimum = 0;
++		qc->maximum = 0;
++		qc->step = 0;
++		qc->default_value = 0;
++		break;
++	}
++	return 0;
++}
++EXPORT_SYMBOL(v4l2_queryctrl);
++
++/* Implement VIDIOC_QUERYMENU */
++int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm)
++{
++	struct v4l2_ctrl *ctrl;
++	u32 i = qm->index;
++
++	ctrl = v4l2_ctrl_find(hdl, qm->id);
++	if (!ctrl)
++		return -EINVAL;
++
++	qm->reserved = 0;
++	/* Sanity checks */
++	switch (ctrl->type) {
++	case V4L2_CTRL_TYPE_MENU:
++		if (ctrl->qmenu == NULL)
++			return -EINVAL;
++		break;
++	case V4L2_CTRL_TYPE_INTEGER_MENU:
++		if (ctrl->qmenu_int == NULL)
++			return -EINVAL;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	if (i < ctrl->minimum || i > ctrl->maximum)
++		return -EINVAL;
++
++	/* Use mask to see if this menu item should be skipped */
++	if (ctrl->menu_skip_mask & (1ULL << i))
++		return -EINVAL;
++	/* Empty menu items should also be skipped */
++	if (ctrl->type == V4L2_CTRL_TYPE_MENU) {
++		if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0')
++			return -EINVAL;
++		strscpy(qm->name, ctrl->qmenu[i], sizeof(qm->name));
++	} else {
++		qm->value = ctrl->qmenu_int[i];
++	}
++	return 0;
++}
++EXPORT_SYMBOL(v4l2_querymenu);
++
++static int v4l2_ctrl_request_clone(struct v4l2_ctrl_handler *hdl,
++				   const struct v4l2_ctrl_handler *from)
++{
++	struct v4l2_ctrl_ref *ref;
++	int err = 0;
++
++	if (WARN_ON(!hdl || hdl == from))
++		return -EINVAL;
++
++	if (hdl->error)
++		return hdl->error;
++
++	WARN_ON(hdl->lock != &hdl->_lock);
++
++	mutex_lock(from->lock);
++	list_for_each_entry(ref, &from->ctrl_refs, node) {
++		struct v4l2_ctrl *ctrl = ref->ctrl;
++		struct v4l2_ctrl_ref *new_ref;
++
++		/* Skip refs inherited from other devices */
++		if (ref->from_other_dev)
++			continue;
++		err = handler_new_ref(hdl, ctrl, &new_ref, false, true);
++		if (err)
++			break;
++	}
++	mutex_unlock(from->lock);
++	return err;
++}
++
++static void v4l2_ctrl_request_queue(struct media_request_object *obj)
++{
++	struct v4l2_ctrl_handler *hdl =
++		container_of(obj, struct v4l2_ctrl_handler, req_obj);
++	struct v4l2_ctrl_handler *main_hdl = obj->priv;
++
++	mutex_lock(main_hdl->lock);
++	list_add_tail(&hdl->requests_queued, &main_hdl->requests_queued);
++	hdl->request_is_queued = true;
++	mutex_unlock(main_hdl->lock);
++}
++
++static void v4l2_ctrl_request_unbind(struct media_request_object *obj)
++{
++	struct v4l2_ctrl_handler *hdl =
++		container_of(obj, struct v4l2_ctrl_handler, req_obj);
++	struct v4l2_ctrl_handler *main_hdl = obj->priv;
++
++	mutex_lock(main_hdl->lock);
++	list_del_init(&hdl->requests);
++	if (hdl->request_is_queued) {
++		list_del_init(&hdl->requests_queued);
++		hdl->request_is_queued = false;
++	}
++	mutex_unlock(main_hdl->lock);
++}
++
++static void v4l2_ctrl_request_release(struct media_request_object *obj)
++{
++	struct v4l2_ctrl_handler *hdl =
++		container_of(obj, struct v4l2_ctrl_handler, req_obj);
++
++	v4l2_ctrl_handler_free(hdl);
++	kfree(hdl);
++}
++
++static const struct media_request_object_ops req_ops = {
++	.queue = v4l2_ctrl_request_queue,
++	.unbind = v4l2_ctrl_request_unbind,
++	.release = v4l2_ctrl_request_release,
++};
++
++struct v4l2_ctrl_handler *v4l2_ctrl_request_hdl_find(struct media_request *req,
++					struct v4l2_ctrl_handler *parent)
++{
++	struct media_request_object *obj;
++
++	if (WARN_ON(req->state != MEDIA_REQUEST_STATE_VALIDATING &&
++		    req->state != MEDIA_REQUEST_STATE_QUEUED))
++		return NULL;
++
++	obj = media_request_object_find(req, &req_ops, parent);
++	if (obj)
++		return container_of(obj, struct v4l2_ctrl_handler, req_obj);
++	return NULL;
++}
++EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_find);
++
++struct v4l2_ctrl *
++v4l2_ctrl_request_hdl_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
++{
++	struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
++
++	return (ref && ref->valid_p_req) ? ref->ctrl : NULL;
++}
++EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_ctrl_find);
++
++static int v4l2_ctrl_request_bind(struct media_request *req,
++			   struct v4l2_ctrl_handler *hdl,
++			   struct v4l2_ctrl_handler *from)
++{
++	int ret;
++
++	ret = v4l2_ctrl_request_clone(hdl, from);
++
++	if (!ret) {
++		ret = media_request_object_bind(req, &req_ops,
++						from, false, &hdl->req_obj);
++		if (!ret) {
++			mutex_lock(from->lock);
++			list_add_tail(&hdl->requests, &from->requests);
++			mutex_unlock(from->lock);
++		}
++	}
++	return ret;
++}
++
++/* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS:
++
++   It is not a fully atomic operation, just best-effort only. After all, if
++   multiple controls have to be set through multiple i2c writes (for example)
++   then some initial writes may succeed while others fail. Thus leaving the
++   system in an inconsistent state. The question is how much effort you are
++   willing to spend on trying to make something atomic that really isn't.
++
++   From the point of view of an application the main requirement is that
++   when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an
++   error should be returned without actually affecting any controls.
++
++   If all the values are correct, then it is acceptable to just give up
++   in case of low-level errors.
++
++   It is important though that the application can tell when only a partial
++   configuration was done. The way we do that is through the error_idx field
++   of struct v4l2_ext_controls: if that is equal to the count field then no
++   controls were affected. Otherwise all controls before that index were
++   successful in performing their 'get' or 'set' operation, the control at
++   the given index failed, and you don't know what happened with the controls
++   after the failed one. Since if they were part of a control cluster they
++   could have been successfully processed (if a cluster member was encountered
++   at index < error_idx), they could have failed (if a cluster member was at
++   error_idx), or they may not have been processed yet (if the first cluster
++   member appeared after error_idx).
++
++   It is all fairly theoretical, though. In practice all you can do is to
++   bail out. If error_idx == count, then it is an application bug. If
++   error_idx < count then it is only an application bug if the error code was
++   EBUSY. That usually means that something started streaming just when you
++   tried to set the controls. In all other cases it is a driver/hardware
++   problem and all you can do is to retry or bail out.
++
++   Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that
++   never modifies controls the error_idx is just set to whatever control
++   has an invalid value.
++ */
++
++/* Prepare for the extended g/s/try functions.
++   Find the controls in the control array and do some basic checks. */
++static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl,
++			     struct v4l2_ext_controls *cs,
++			     struct v4l2_ctrl_helper *helpers,
++			     struct video_device *vdev,
++			     bool get)
++{
++	struct v4l2_ctrl_helper *h;
++	bool have_clusters = false;
++	u32 i;
++
++	for (i = 0, h = helpers; i < cs->count; i++, h++) {
++		struct v4l2_ext_control *c = &cs->controls[i];
++		struct v4l2_ctrl_ref *ref;
++		struct v4l2_ctrl *ctrl;
++		u32 id = c->id & V4L2_CTRL_ID_MASK;
++
++		cs->error_idx = i;
++
++		if (cs->which &&
++		    cs->which != V4L2_CTRL_WHICH_DEF_VAL &&
++		    cs->which != V4L2_CTRL_WHICH_REQUEST_VAL &&
++		    V4L2_CTRL_ID2WHICH(id) != cs->which) {
++			dprintk(vdev,
++				"invalid which 0x%x or control id 0x%x\n",
++				cs->which, id);
++			return -EINVAL;
++		}
++
++		/* Old-style private controls are not allowed for
++		   extended controls */
++		if (id >= V4L2_CID_PRIVATE_BASE) {
++			dprintk(vdev,
++				"old-style private controls not allowed\n");
++			return -EINVAL;
++		}
++		ref = find_ref_lock(hdl, id);
++		if (ref == NULL) {
++			dprintk(vdev, "cannot find control id 0x%x\n", id);
++			return -EINVAL;
++		}
++		h->ref = ref;
++		ctrl = ref->ctrl;
++		if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) {
++			dprintk(vdev, "control id 0x%x is disabled\n", id);
++			return -EINVAL;
++		}
++
++		if (ctrl->cluster[0]->ncontrols > 1)
++			have_clusters = true;
++		if (ctrl->cluster[0] != ctrl)
++			ref = find_ref_lock(hdl, ctrl->cluster[0]->id);
++		if (ctrl->is_ptr && !ctrl->is_string) {
++			unsigned tot_size = ctrl->elems * ctrl->elem_size;
++
++			if (c->size < tot_size) {
++				/*
++				 * In the get case the application first
++				 * queries to obtain the size of the control.
++				 */
++				if (get) {
++					c->size = tot_size;
++					return -ENOSPC;
++				}
++				dprintk(vdev,
++					"pointer control id 0x%x size too small, %d bytes but %d bytes needed\n",
++					id, c->size, tot_size);
++				return -EFAULT;
++			}
++			c->size = tot_size;
++		}
++		/* Store the ref to the master control of the cluster */
++		h->mref = ref;
++		/* Initially set next to 0, meaning that there is no other
++		   control in this helper array belonging to the same
++		   cluster */
++		h->next = 0;
++	}
++
++	/* We are done if there were no controls that belong to a multi-
++	   control cluster. */
++	if (!have_clusters)
++		return 0;
++
++	/* The code below figures out in O(n) time which controls in the list
++	   belong to the same cluster. */
++
++	/* This has to be done with the handler lock taken. */
++	mutex_lock(hdl->lock);
++
++	/* First zero the helper field in the master control references */
++	for (i = 0; i < cs->count; i++)
++		helpers[i].mref->helper = NULL;
++	for (i = 0, h = helpers; i < cs->count; i++, h++) {
++		struct v4l2_ctrl_ref *mref = h->mref;
++
++		/* If the mref->helper is set, then it points to an earlier
++		   helper that belongs to the same cluster. */
++		if (mref->helper) {
++			/* Set the next field of mref->helper to the current
++			   index: this means that that earlier helper now
++			   points to the next helper in the same cluster. */
++			mref->helper->next = i;
++			/* mref should be set only for the first helper in the
++			   cluster, clear the others. */
++			h->mref = NULL;
++		}
++		/* Point the mref helper to the current helper struct. */
++		mref->helper = h;
++	}
++	mutex_unlock(hdl->lock);
++	return 0;
++}
++
++/* Handles the corner case where cs->count == 0. It checks whether the
++   specified control class exists. If that class ID is 0, then it checks
++   whether there are any controls at all. */
++static int class_check(struct v4l2_ctrl_handler *hdl, u32 which)
++{
++	if (which == 0 || which == V4L2_CTRL_WHICH_DEF_VAL ||
++	    which == V4L2_CTRL_WHICH_REQUEST_VAL)
++		return 0;
++	return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL;
++}
++
++/*
++ * Get extended controls. Allocates the helpers array if needed.
++ *
++ * Note that v4l2_g_ext_ctrls_common() with 'which' set to
++ * V4L2_CTRL_WHICH_REQUEST_VAL is only called if the request was
++ * completed, and in that case valid_p_req is true for all controls.
++ */
++static int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl,
++				   struct v4l2_ext_controls *cs,
++				   struct video_device *vdev)
++{
++	struct v4l2_ctrl_helper helper[4];
++	struct v4l2_ctrl_helper *helpers = helper;
++	int ret;
++	int i, j;
++	bool is_default, is_request;
++
++	is_default = (cs->which == V4L2_CTRL_WHICH_DEF_VAL);
++	is_request = (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL);
++
++	cs->error_idx = cs->count;
++	cs->which = V4L2_CTRL_ID2WHICH(cs->which);
++
++	if (hdl == NULL)
++		return -EINVAL;
++
++	if (cs->count == 0)
++		return class_check(hdl, cs->which);
++
++	if (cs->count > ARRAY_SIZE(helper)) {
++		helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
++					 GFP_KERNEL);
++		if (helpers == NULL)
++			return -ENOMEM;
++	}
++
++	ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, true);
++	cs->error_idx = cs->count;
++
++	for (i = 0; !ret && i < cs->count; i++)
++		if (helpers[i].ref->ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
++			ret = -EACCES;
++
++	for (i = 0; !ret && i < cs->count; i++) {
++		struct v4l2_ctrl *master;
++		bool is_volatile = false;
++		u32 idx = i;
++
++		if (helpers[i].mref == NULL)
++			continue;
++
++		master = helpers[i].mref->ctrl;
++		cs->error_idx = i;
++
++		v4l2_ctrl_lock(master);
++
++		/*
++		 * g_volatile_ctrl will update the new control values.
++		 * This makes no sense for V4L2_CTRL_WHICH_DEF_VAL and
++		 * V4L2_CTRL_WHICH_REQUEST_VAL. In the case of requests
++		 * it is v4l2_ctrl_request_complete() that copies the
++		 * volatile controls at the time of request completion
++		 * to the request, so you don't want to do that again.
++		 */
++		if (!is_default && !is_request &&
++		    ((master->flags & V4L2_CTRL_FLAG_VOLATILE) ||
++		    (master->has_volatiles && !is_cur_manual(master)))) {
++			for (j = 0; j < master->ncontrols; j++)
++				cur_to_new(master->cluster[j]);
++			ret = call_op(master, g_volatile_ctrl);
++			is_volatile = true;
++		}
++
++		if (ret) {
++			v4l2_ctrl_unlock(master);
++			break;
++		}
++
++		/*
++		 * Copy the default value (if is_default is true), the
++		 * request value (if is_request is true and p_req is valid),
++		 * the new volatile value (if is_volatile is true) or the
++		 * current value.
++		 */
++		do {
++			struct v4l2_ctrl_ref *ref = helpers[idx].ref;
++
++			if (is_default)
++				ret = def_to_user(cs->controls + idx, ref->ctrl);
++			else if (is_request && ref->valid_p_req)
++				ret = req_to_user(cs->controls + idx, ref);
++			else if (is_volatile)
++				ret = new_to_user(cs->controls + idx, ref->ctrl);
++			else
++				ret = cur_to_user(cs->controls + idx, ref->ctrl);
++			idx = helpers[idx].next;
++		} while (!ret && idx);
++
++		v4l2_ctrl_unlock(master);
++	}
++
++	if (cs->count > ARRAY_SIZE(helper))
++		kvfree(helpers);
++	return ret;
++}
++
++static struct media_request_object *
++v4l2_ctrls_find_req_obj(struct v4l2_ctrl_handler *hdl,
++			struct media_request *req, bool set)
++{
++	struct media_request_object *obj;
++	struct v4l2_ctrl_handler *new_hdl;
++	int ret;
++
++	if (IS_ERR(req))
++		return ERR_CAST(req);
++
++	if (set && WARN_ON(req->state != MEDIA_REQUEST_STATE_UPDATING))
++		return ERR_PTR(-EBUSY);
++
++	obj = media_request_object_find(req, &req_ops, hdl);
++	if (obj)
++		return obj;
++	if (!set)
++		return ERR_PTR(-ENOENT);
++
++	new_hdl = kzalloc(sizeof(*new_hdl), GFP_KERNEL);
++	if (!new_hdl)
++		return ERR_PTR(-ENOMEM);
++
++	obj = &new_hdl->req_obj;
++	ret = v4l2_ctrl_handler_init(new_hdl, (hdl->nr_of_buckets - 1) * 8);
++	if (!ret)
++		ret = v4l2_ctrl_request_bind(req, new_hdl, hdl);
++	if (ret) {
++		kfree(new_hdl);
++
++		return ERR_PTR(ret);
++	}
++
++	media_request_object_get(obj);
++	return obj;
++}
++
++int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct video_device *vdev,
++		     struct media_device *mdev, struct v4l2_ext_controls *cs)
++{
++	struct media_request_object *obj = NULL;
++	struct media_request *req = NULL;
++	int ret;
++
++	if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
++		if (!mdev || cs->request_fd < 0)
++			return -EINVAL;
++
++		req = media_request_get_by_fd(mdev, cs->request_fd);
++		if (IS_ERR(req))
++			return PTR_ERR(req);
++
++		if (req->state != MEDIA_REQUEST_STATE_COMPLETE) {
++			media_request_put(req);
++			return -EACCES;
++		}
++
++		ret = media_request_lock_for_access(req);
++		if (ret) {
++			media_request_put(req);
++			return ret;
++		}
++
++		obj = v4l2_ctrls_find_req_obj(hdl, req, false);
++		if (IS_ERR(obj)) {
++			media_request_unlock_for_access(req);
++			media_request_put(req);
++			return PTR_ERR(obj);
++		}
++
++		hdl = container_of(obj, struct v4l2_ctrl_handler,
++				   req_obj);
++	}
++
++	ret = v4l2_g_ext_ctrls_common(hdl, cs, vdev);
++
++	if (obj) {
++		media_request_unlock_for_access(req);
++		media_request_object_put(obj);
++		media_request_put(req);
++	}
++	return ret;
++}
++EXPORT_SYMBOL(v4l2_g_ext_ctrls);
++
++/* Helper function to get a single control */
++static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c)
++{
++	struct v4l2_ctrl *master = ctrl->cluster[0];
++	int ret = 0;
++	int i;
++
++	/* Compound controls are not supported. The new_to_user() and
++	 * cur_to_user() calls below would need to be modified not to access
++	 * userspace memory when called from get_ctrl().
++	 */
++	if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64)
++		return -EINVAL;
++
++	if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
++		return -EACCES;
++
++	v4l2_ctrl_lock(master);
++	/* g_volatile_ctrl will update the current control values */
++	if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
++		for (i = 0; i < master->ncontrols; i++)
++			cur_to_new(master->cluster[i]);
++		ret = call_op(master, g_volatile_ctrl);
++		new_to_user(c, ctrl);
++	} else {
++		cur_to_user(c, ctrl);
++	}
++	v4l2_ctrl_unlock(master);
++	return ret;
++}
++
++int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control)
++{
++	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
++	struct v4l2_ext_control c;
++	int ret;
++
++	if (ctrl == NULL || !ctrl->is_int)
++		return -EINVAL;
++	ret = get_ctrl(ctrl, &c);
++	control->value = c.value;
++	return ret;
++}
++EXPORT_SYMBOL(v4l2_g_ctrl);
++
++s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct v4l2_ext_control c;
++
++	/* It's a driver bug if this happens. */
++	if (WARN_ON(!ctrl->is_int))
++		return 0;
++	c.value = 0;
++	get_ctrl(ctrl, &c);
++	return c.value;
++}
++EXPORT_SYMBOL(v4l2_ctrl_g_ctrl);
++
++s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl)
++{
++	struct v4l2_ext_control c;
++
++	/* It's a driver bug if this happens. */
++	if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
++		return 0;
++	c.value64 = 0;
++	get_ctrl(ctrl, &c);
++	return c.value64;
++}
++EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64);
++
++
++/* Core function that calls try/s_ctrl and ensures that the new value is
++   copied to the current value on a set.
++   Must be called with ctrl->handler->lock held. */
++static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master,
++			      bool set, u32 ch_flags)
++{
++	bool update_flag;
++	int ret;
++	int i;
++
++	/* Go through the cluster and either validate the new value or
++	   (if no new value was set), copy the current value to the new
++	   value, ensuring a consistent view for the control ops when
++	   called. */
++	for (i = 0; i < master->ncontrols; i++) {
++		struct v4l2_ctrl *ctrl = master->cluster[i];
++
++		if (ctrl == NULL)
++			continue;
++
++		if (!ctrl->is_new) {
++			cur_to_new(ctrl);
++			continue;
++		}
++		/* Check again: it may have changed since the
++		   previous check in try_or_set_ext_ctrls(). */
++		if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED))
++			return -EBUSY;
++	}
++
++	ret = call_op(master, try_ctrl);
++
++	/* Don't set if there is no change */
++	if (ret || !set || !cluster_changed(master))
++		return ret;
++	ret = call_op(master, s_ctrl);
++	if (ret)
++		return ret;
++
++	/* If OK, then make the new values permanent. */
++	update_flag = is_cur_manual(master) != is_new_manual(master);
++
++	for (i = 0; i < master->ncontrols; i++) {
++		/*
++		 * If we switch from auto to manual mode, and this cluster
++		 * contains volatile controls, then all non-master controls
++		 * have to be marked as changed. The 'new' value contains
++		 * the volatile value (obtained by update_from_auto_cluster),
++		 * which now has to become the current value.
++		 */
++		if (i && update_flag && is_new_manual(master) &&
++		    master->has_volatiles && master->cluster[i])
++			master->cluster[i]->has_changed = true;
++
++		new_to_cur(fh, master->cluster[i], ch_flags |
++			((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0));
++	}
++	return 0;
++}
++
++/* Validate controls. */
++static int validate_ctrls(struct v4l2_ext_controls *cs,
++			  struct v4l2_ctrl_helper *helpers,
++			  struct video_device *vdev,
++			  bool set)
++{
++	unsigned i;
++	int ret = 0;
++
++	cs->error_idx = cs->count;
++	for (i = 0; i < cs->count; i++) {
++		struct v4l2_ctrl *ctrl = helpers[i].ref->ctrl;
++		union v4l2_ctrl_ptr p_new;
++
++		cs->error_idx = i;
++
++		if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) {
++			dprintk(vdev,
++				"control id 0x%x is read-only\n",
++				ctrl->id);
++			return -EACCES;
++		}
++		/* This test is also done in try_set_control_cluster() which
++		   is called in atomic context, so that has the final say,
++		   but it makes sense to do an up-front check as well. Once
++		   an error occurs in try_set_control_cluster() some other
++		   controls may have been set already and we want to do a
++		   best-effort to avoid that. */
++		if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) {
++			dprintk(vdev,
++				"control id 0x%x is grabbed, cannot set\n",
++				ctrl->id);
++			return -EBUSY;
++		}
++		/*
++		 * Skip validation for now if the payload needs to be copied
++		 * from userspace into kernelspace. We'll validate those later.
++		 */
++		if (ctrl->is_ptr)
++			continue;
++		if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
++			p_new.p_s64 = &cs->controls[i].value64;
++		else
++			p_new.p_s32 = &cs->controls[i].value;
++		ret = validate_new(ctrl, p_new);
++		if (ret)
++			return ret;
++	}
++	return 0;
++}
++
++/* Obtain the current volatile values of an autocluster and mark them
++   as new. */
++static void update_from_auto_cluster(struct v4l2_ctrl *master)
++{
++	int i;
++
++	for (i = 1; i < master->ncontrols; i++)
++		cur_to_new(master->cluster[i]);
++	if (!call_op(master, g_volatile_ctrl))
++		for (i = 1; i < master->ncontrols; i++)
++			if (master->cluster[i])
++				master->cluster[i]->is_new = 1;
++}
++
++/* Try or try-and-set controls */
++static int try_set_ext_ctrls_common(struct v4l2_fh *fh,
++				    struct v4l2_ctrl_handler *hdl,
++				    struct v4l2_ext_controls *cs,
++				    struct video_device *vdev, bool set)
++{
++	struct v4l2_ctrl_helper helper[4];
++	struct v4l2_ctrl_helper *helpers = helper;
++	unsigned i, j;
++	int ret;
++
++	cs->error_idx = cs->count;
++
++	/* Default value cannot be changed */
++	if (cs->which == V4L2_CTRL_WHICH_DEF_VAL) {
++		dprintk(vdev, "%s: cannot change default value\n",
++			video_device_node_name(vdev));
++		return -EINVAL;
++	}
++
++	cs->which = V4L2_CTRL_ID2WHICH(cs->which);
++
++	if (hdl == NULL) {
++		dprintk(vdev, "%s: invalid null control handler\n",
++			video_device_node_name(vdev));
++		return -EINVAL;
++	}
++
++	if (cs->count == 0)
++		return class_check(hdl, cs->which);
++
++	if (cs->count > ARRAY_SIZE(helper)) {
++		helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
++					 GFP_KERNEL);
++		if (!helpers)
++			return -ENOMEM;
++	}
++	ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, false);
++	if (!ret)
++		ret = validate_ctrls(cs, helpers, vdev, set);
++	if (ret && set)
++		cs->error_idx = cs->count;
++	for (i = 0; !ret && i < cs->count; i++) {
++		struct v4l2_ctrl *master;
++		u32 idx = i;
++
++		if (helpers[i].mref == NULL)
++			continue;
++
++		cs->error_idx = i;
++		master = helpers[i].mref->ctrl;
++		v4l2_ctrl_lock(master);
++
++		/* Reset the 'is_new' flags of the cluster */
++		for (j = 0; j < master->ncontrols; j++)
++			if (master->cluster[j])
++				master->cluster[j]->is_new = 0;
++
++		/* For volatile autoclusters that are currently in auto mode
++		   we need to discover if it will be set to manual mode.
++		   If so, then we have to copy the current volatile values
++		   first since those will become the new manual values (which
++		   may be overwritten by explicit new values from this set
++		   of controls). */
++		if (master->is_auto && master->has_volatiles &&
++						!is_cur_manual(master)) {
++			/* Pick an initial non-manual value */
++			s32 new_auto_val = master->manual_mode_value + 1;
++			u32 tmp_idx = idx;
++
++			do {
++				/* Check if the auto control is part of the
++				   list, and remember the new value. */
++				if (helpers[tmp_idx].ref->ctrl == master)
++					new_auto_val = cs->controls[tmp_idx].value;
++				tmp_idx = helpers[tmp_idx].next;
++			} while (tmp_idx);
++			/* If the new value == the manual value, then copy
++			   the current volatile values. */
++			if (new_auto_val == master->manual_mode_value)
++				update_from_auto_cluster(master);
++		}
++
++		/* Copy the new caller-supplied control values.
++		   user_to_new() sets 'is_new' to 1. */
++		do {
++			struct v4l2_ctrl *ctrl = helpers[idx].ref->ctrl;
++
++			ret = user_to_new(cs->controls + idx, ctrl);
++			if (!ret && ctrl->is_ptr) {
++				ret = validate_new(ctrl, ctrl->p_new);
++				if (ret)
++					dprintk(vdev,
++						"failed to validate control %s (%d)\n",
++						v4l2_ctrl_get_name(ctrl->id), ret);
++			}
++			idx = helpers[idx].next;
++		} while (!ret && idx);
++
++		if (!ret)
++			ret = try_or_set_cluster(fh, master,
++						 !hdl->req_obj.req && set, 0);
++		if (!ret && hdl->req_obj.req && set) {
++			for (j = 0; j < master->ncontrols; j++) {
++				struct v4l2_ctrl_ref *ref =
++					find_ref(hdl, master->cluster[j]->id);
++
++				new_to_req(ref);
++			}
++		}
++
++		/* Copy the new values back to userspace. */
++		if (!ret) {
++			idx = i;
++			do {
++				ret = new_to_user(cs->controls + idx,
++						helpers[idx].ref->ctrl);
++				idx = helpers[idx].next;
++			} while (!ret && idx);
++		}
++		v4l2_ctrl_unlock(master);
++	}
++
++	if (cs->count > ARRAY_SIZE(helper))
++		kvfree(helpers);
++	return ret;
++}
++
++static int try_set_ext_ctrls(struct v4l2_fh *fh,
++			     struct v4l2_ctrl_handler *hdl,
++			     struct video_device *vdev,
++			     struct media_device *mdev,
++			     struct v4l2_ext_controls *cs, bool set)
++{
++	struct media_request_object *obj = NULL;
++	struct media_request *req = NULL;
++	int ret;
++
++	if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
++		if (!mdev) {
++			dprintk(vdev, "%s: missing media device\n",
++				video_device_node_name(vdev));
++			return -EINVAL;
++		}
++
++		if (cs->request_fd < 0) {
++			dprintk(vdev, "%s: invalid request fd %d\n",
++				video_device_node_name(vdev), cs->request_fd);
++			return -EINVAL;
++		}
++
++		req = media_request_get_by_fd(mdev, cs->request_fd);
++		if (IS_ERR(req)) {
++			dprintk(vdev, "%s: cannot find request fd %d\n",
++				video_device_node_name(vdev), cs->request_fd);
++			return PTR_ERR(req);
++		}
++
++		ret = media_request_lock_for_update(req);
++		if (ret) {
++			dprintk(vdev, "%s: cannot lock request fd %d\n",
++				video_device_node_name(vdev), cs->request_fd);
++			media_request_put(req);
++			return ret;
++		}
++
++		obj = v4l2_ctrls_find_req_obj(hdl, req, set);
++		if (IS_ERR(obj)) {
++			dprintk(vdev,
++				"%s: cannot find request object for request fd %d\n",
++				video_device_node_name(vdev),
++				cs->request_fd);
++			media_request_unlock_for_update(req);
++			media_request_put(req);
++			return PTR_ERR(obj);
++		}
++		hdl = container_of(obj, struct v4l2_ctrl_handler,
++				   req_obj);
++	}
++
++	ret = try_set_ext_ctrls_common(fh, hdl, cs, vdev, set);
++	if (ret)
++		dprintk(vdev,
++			"%s: try_set_ext_ctrls_common failed (%d)\n",
++			video_device_node_name(vdev), ret);
++
++	if (obj) {
++		media_request_unlock_for_update(req);
++		media_request_object_put(obj);
++		media_request_put(req);
++	}
++
++	return ret;
++}
++
++int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl,
++		       struct video_device *vdev,
++		       struct media_device *mdev,
++		       struct v4l2_ext_controls *cs)
++{
++	return try_set_ext_ctrls(NULL, hdl, vdev, mdev, cs, false);
++}
++EXPORT_SYMBOL(v4l2_try_ext_ctrls);
++
++int v4l2_s_ext_ctrls(struct v4l2_fh *fh,
++		     struct v4l2_ctrl_handler *hdl,
++		     struct video_device *vdev,
++		     struct media_device *mdev,
++		     struct v4l2_ext_controls *cs)
++{
++	return try_set_ext_ctrls(fh, hdl, vdev, mdev, cs, true);
++}
++EXPORT_SYMBOL(v4l2_s_ext_ctrls);
++
++/* Helper function for VIDIOC_S_CTRL compatibility */
++static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
++{
++	struct v4l2_ctrl *master = ctrl->cluster[0];
++	int ret;
++	int i;
++
++	/* Reset the 'is_new' flags of the cluster */
++	for (i = 0; i < master->ncontrols; i++)
++		if (master->cluster[i])
++			master->cluster[i]->is_new = 0;
++
++	ret = validate_new(ctrl, ctrl->p_new);
++	if (ret)
++		return ret;
++
++	/* For autoclusters with volatiles that are switched from auto to
++	   manual mode we have to update the current volatile values since
++	   those will become the initial manual values after such a switch. */
++	if (master->is_auto && master->has_volatiles && ctrl == master &&
++	    !is_cur_manual(master) && ctrl->val == master->manual_mode_value)
++		update_from_auto_cluster(master);
++
++	ctrl->is_new = 1;
++	return try_or_set_cluster(fh, master, true, ch_flags);
++}
++
++/* Helper function for VIDIOC_S_CTRL compatibility */
++static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl,
++			 struct v4l2_ext_control *c)
++{
++	int ret;
++
++	v4l2_ctrl_lock(ctrl);
++	user_to_new(c, ctrl);
++	ret = set_ctrl(fh, ctrl, 0);
++	if (!ret)
++		cur_to_user(c, ctrl);
++	v4l2_ctrl_unlock(ctrl);
++	return ret;
++}
++
++int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
++					struct v4l2_control *control)
++{
++	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
++	struct v4l2_ext_control c = { control->id };
++	int ret;
++
++	if (ctrl == NULL || !ctrl->is_int)
++		return -EINVAL;
++
++	if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
++		return -EACCES;
++
++	c.value = control->value;
++	ret = set_ctrl_lock(fh, ctrl, &c);
++	control->value = c.value;
++	return ret;
++}
++EXPORT_SYMBOL(v4l2_s_ctrl);
++
++int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val)
++{
++	lockdep_assert_held(ctrl->handler->lock);
++
++	/* It's a driver bug if this happens. */
++	if (WARN_ON(!ctrl->is_int))
++		return -EINVAL;
++	ctrl->val = val;
++	return set_ctrl(NULL, ctrl, 0);
++}
++EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl);
++
++int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val)
++{
++	lockdep_assert_held(ctrl->handler->lock);
++
++	/* It's a driver bug if this happens. */
++	if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
++		return -EINVAL;
++	*ctrl->p_new.p_s64 = val;
++	return set_ctrl(NULL, ctrl, 0);
++}
++EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64);
++
++int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s)
++{
++	lockdep_assert_held(ctrl->handler->lock);
++
++	/* It's a driver bug if this happens. */
++	if (WARN_ON(ctrl->type != V4L2_CTRL_TYPE_STRING))
++		return -EINVAL;
++	strscpy(ctrl->p_new.p_char, s, ctrl->maximum + 1);
++	return set_ctrl(NULL, ctrl, 0);
++}
++EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string);
++
++int __v4l2_ctrl_s_ctrl_compound(struct v4l2_ctrl *ctrl,
++				enum v4l2_ctrl_type type, const void *p)
++{
++	lockdep_assert_held(ctrl->handler->lock);
++
++	/* It's a driver bug if this happens. */
++	if (WARN_ON(ctrl->type != type))
++		return -EINVAL;
++	memcpy(ctrl->p_new.p, p, ctrl->elems * ctrl->elem_size);
++	return set_ctrl(NULL, ctrl, 0);
++}
++EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_compound);
++
++void v4l2_ctrl_request_complete(struct media_request *req,
++				struct v4l2_ctrl_handler *main_hdl)
++{
++	struct media_request_object *obj;
++	struct v4l2_ctrl_handler *hdl;
++	struct v4l2_ctrl_ref *ref;
++
++	if (!req || !main_hdl)
++		return;
++
++	/*
++	 * Note that it is valid if nothing was found. It means
++	 * that this request doesn't have any controls and so just
++	 * wants to leave the controls unchanged.
++	 */
++	obj = media_request_object_find(req, &req_ops, main_hdl);
++	if (!obj)
++		return;
++	hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
++
++	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
++		struct v4l2_ctrl *ctrl = ref->ctrl;
++		struct v4l2_ctrl *master = ctrl->cluster[0];
++		unsigned int i;
++
++		if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
++			v4l2_ctrl_lock(master);
++			/* g_volatile_ctrl will update the current control values */
++			for (i = 0; i < master->ncontrols; i++)
++				cur_to_new(master->cluster[i]);
++			call_op(master, g_volatile_ctrl);
++			new_to_req(ref);
++			v4l2_ctrl_unlock(master);
++			continue;
++		}
++		if (ref->valid_p_req)
++			continue;
++
++		/* Copy the current control value into the request */
++		v4l2_ctrl_lock(ctrl);
++		cur_to_req(ref);
++		v4l2_ctrl_unlock(ctrl);
++	}
++
++	mutex_lock(main_hdl->lock);
++	WARN_ON(!hdl->request_is_queued);
++	list_del_init(&hdl->requests_queued);
++	hdl->request_is_queued = false;
++	mutex_unlock(main_hdl->lock);
++	media_request_object_complete(obj);
++	media_request_object_put(obj);
++}
++EXPORT_SYMBOL(v4l2_ctrl_request_complete);
++
++int v4l2_ctrl_request_setup(struct media_request *req,
++			     struct v4l2_ctrl_handler *main_hdl)
++{
++	struct media_request_object *obj;
++	struct v4l2_ctrl_handler *hdl;
++	struct v4l2_ctrl_ref *ref;
++	int ret = 0;
++
++	if (!req || !main_hdl)
++		return 0;
++
++	if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED))
++		return -EBUSY;
++
++	/*
++	 * Note that it is valid if nothing was found. It means
++	 * that this request doesn't have any controls and so just
++	 * wants to leave the controls unchanged.
++	 */
++	obj = media_request_object_find(req, &req_ops, main_hdl);
++	if (!obj)
++		return 0;
++	if (obj->completed) {
++		media_request_object_put(obj);
++		return -EBUSY;
++	}
++	hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
++
++	list_for_each_entry(ref, &hdl->ctrl_refs, node)
++		ref->req_done = false;
++
++	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
++		struct v4l2_ctrl *ctrl = ref->ctrl;
++		struct v4l2_ctrl *master = ctrl->cluster[0];
++		bool have_new_data = false;
++		int i;
++
++		/*
++		 * Skip if this control was already handled by a cluster.
++		 * Skip button controls and read-only controls.
++		 */
++		if (ref->req_done || (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
++			continue;
++
++		v4l2_ctrl_lock(master);
++		for (i = 0; i < master->ncontrols; i++) {
++			if (master->cluster[i]) {
++				struct v4l2_ctrl_ref *r =
++					find_ref(hdl, master->cluster[i]->id);
++
++				if (r->valid_p_req) {
++					have_new_data = true;
++					break;
++				}
++			}
++		}
++		if (!have_new_data) {
++			v4l2_ctrl_unlock(master);
++			continue;
++		}
++
++		for (i = 0; i < master->ncontrols; i++) {
++			if (master->cluster[i]) {
++				struct v4l2_ctrl_ref *r =
++					find_ref(hdl, master->cluster[i]->id);
++
++				req_to_new(r);
++				master->cluster[i]->is_new = 1;
++				r->req_done = true;
++			}
++		}
++		/*
++		 * For volatile autoclusters that are currently in auto mode
++		 * we need to discover if it will be set to manual mode.
++		 * If so, then we have to copy the current volatile values
++		 * first since those will become the new manual values (which
++		 * may be overwritten by explicit new values from this set
++		 * of controls).
++		 */
++		if (master->is_auto && master->has_volatiles &&
++		    !is_cur_manual(master)) {
++			s32 new_auto_val = *master->p_new.p_s32;
++
++			/*
++			 * If the new value == the manual value, then copy
++			 * the current volatile values.
++			 */
++			if (new_auto_val == master->manual_mode_value)
++				update_from_auto_cluster(master);
++		}
++
++		ret = try_or_set_cluster(NULL, master, true, 0);
++		v4l2_ctrl_unlock(master);
++
++		if (ret)
++			break;
++	}
++
++	media_request_object_put(obj);
++	return ret;
++}
++EXPORT_SYMBOL(v4l2_ctrl_request_setup);
++
++void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv)
++{
++	if (ctrl == NULL)
++		return;
++	if (notify == NULL) {
++		ctrl->call_notify = 0;
++		return;
++	}
++	if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify))
++		return;
++	ctrl->handler->notify = notify;
++	ctrl->handler->notify_priv = priv;
++	ctrl->call_notify = 1;
++}
++EXPORT_SYMBOL(v4l2_ctrl_notify);
++
++int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
++			s64 min, s64 max, u64 step, s64 def)
++{
++	bool value_changed;
++	bool range_changed = false;
++	int ret;
++
++	lockdep_assert_held(ctrl->handler->lock);
++
++	switch (ctrl->type) {
++	case V4L2_CTRL_TYPE_INTEGER:
++	case V4L2_CTRL_TYPE_INTEGER64:
++	case V4L2_CTRL_TYPE_BOOLEAN:
++	case V4L2_CTRL_TYPE_MENU:
++	case V4L2_CTRL_TYPE_INTEGER_MENU:
++	case V4L2_CTRL_TYPE_BITMASK:
++	case V4L2_CTRL_TYPE_U8:
++	case V4L2_CTRL_TYPE_U16:
++	case V4L2_CTRL_TYPE_U32:
++		if (ctrl->is_array)
++			return -EINVAL;
++		ret = check_range(ctrl->type, min, max, step, def);
++		if (ret)
++			return ret;
++		break;
++	default:
++		return -EINVAL;
++	}
++	if ((ctrl->minimum != min) || (ctrl->maximum != max) ||
++		(ctrl->step != step) || ctrl->default_value != def) {
++		range_changed = true;
++		ctrl->minimum = min;
++		ctrl->maximum = max;
++		ctrl->step = step;
++		ctrl->default_value = def;
++	}
++	cur_to_new(ctrl);
++	if (validate_new(ctrl, ctrl->p_new)) {
++		if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
++			*ctrl->p_new.p_s64 = def;
++		else
++			*ctrl->p_new.p_s32 = def;
++	}
++
++	if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
++		value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64;
++	else
++		value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32;
++	if (value_changed)
++		ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
++	else if (range_changed)
++		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
++	return ret;
++}
++EXPORT_SYMBOL(__v4l2_ctrl_modify_range);
++
++static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
++{
++	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
++
++	if (ctrl == NULL)
++		return -EINVAL;
++
++	v4l2_ctrl_lock(ctrl);
++	list_add_tail(&sev->node, &ctrl->ev_subs);
++	if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS &&
++	    (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) {
++		struct v4l2_event ev;
++		u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
++
++		if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY))
++			changes |= V4L2_EVENT_CTRL_CH_VALUE;
++		fill_event(&ev, ctrl, changes);
++		/* Mark the queue as active, allowing this initial
++		   event to be accepted. */
++		sev->elems = elems;
++		v4l2_event_queue_fh(sev->fh, &ev);
++	}
++	v4l2_ctrl_unlock(ctrl);
++	return 0;
++}
++
++static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev)
++{
++	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
++
++	if (ctrl == NULL)
++		return;
++
++	v4l2_ctrl_lock(ctrl);
++	list_del(&sev->node);
++	v4l2_ctrl_unlock(ctrl);
++}
++
++void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new)
++{
++	u32 old_changes = old->u.ctrl.changes;
++
++	old->u.ctrl = new->u.ctrl;
++	old->u.ctrl.changes |= old_changes;
++}
++EXPORT_SYMBOL(v4l2_ctrl_replace);
++
++void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new)
++{
++	new->u.ctrl.changes |= old->u.ctrl.changes;
++}
++EXPORT_SYMBOL(v4l2_ctrl_merge);
++
++const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = {
++	.add = v4l2_ctrl_add_event,
++	.del = v4l2_ctrl_del_event,
++	.replace = v4l2_ctrl_replace,
++	.merge = v4l2_ctrl_merge,
++};
++EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops);
++
++int v4l2_ctrl_log_status(struct file *file, void *fh)
++{
++	struct video_device *vfd = video_devdata(file);
++	struct v4l2_fh *vfh = file->private_data;
++
++	if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev)
++		v4l2_ctrl_handler_log_status(vfh->ctrl_handler,
++			vfd->v4l2_dev->name);
++	return 0;
++}
++EXPORT_SYMBOL(v4l2_ctrl_log_status);
++
++int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh,
++				const struct v4l2_event_subscription *sub)
++{
++	if (sub->type == V4L2_EVENT_CTRL)
++		return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops);
++	return -EINVAL;
++}
++EXPORT_SYMBOL(v4l2_ctrl_subscribe_event);
++
++int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
++				     struct v4l2_event_subscription *sub)
++{
++	if (!sd->ctrl_handler)
++		return -EINVAL;
++	return v4l2_ctrl_subscribe_event(fh, sub);
++}
++EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event);
++
++__poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait)
++{
++	struct v4l2_fh *fh = file->private_data;
++
++	poll_wait(file, &fh->wait, wait);
++	if (v4l2_event_pending(fh))
++		return EPOLLPRI;
++	return 0;
++}
++EXPORT_SYMBOL(v4l2_ctrl_poll);
++
++int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,
++				    const struct v4l2_ctrl_ops *ctrl_ops,
++				    const struct v4l2_fwnode_device_properties *p)
++{
++	if (p->orientation != V4L2_FWNODE_PROPERTY_UNSET) {
++		u32 orientation_ctrl;
++
++		switch (p->orientation) {
++		case V4L2_FWNODE_ORIENTATION_FRONT:
++			orientation_ctrl = V4L2_CAMERA_ORIENTATION_FRONT;
++			break;
++		case V4L2_FWNODE_ORIENTATION_BACK:
++			orientation_ctrl = V4L2_CAMERA_ORIENTATION_BACK;
++			break;
++		case V4L2_FWNODE_ORIENTATION_EXTERNAL:
++			orientation_ctrl = V4L2_CAMERA_ORIENTATION_EXTERNAL;
++			break;
++		default:
++			return -EINVAL;
++		}
++		if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops,
++					    V4L2_CID_CAMERA_ORIENTATION,
++					    V4L2_CAMERA_ORIENTATION_EXTERNAL, 0,
++					    orientation_ctrl))
++			return hdl->error;
++	}
++
++	if (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) {
++		if (!v4l2_ctrl_new_std(hdl, ctrl_ops,
++				       V4L2_CID_CAMERA_SENSOR_ROTATION,
++				       p->rotation, p->rotation, 1,
++				       p->rotation))
++			return hdl->error;
++	}
++
++	return hdl->error;
++}
++EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties);
+--- a/include/uapi/linux/v4l2-controls.h
++++ b/include/uapi/linux/v4l2-controls.h
+@@ -926,6 +926,7 @@ enum v4l2_auto_n_preset_white_balance {
+ 	V4L2_WHITE_BALANCE_FLASH		= 7,
+ 	V4L2_WHITE_BALANCE_CLOUDY		= 8,
+ 	V4L2_WHITE_BALANCE_SHADE		= 9,
++	V4L2_WHITE_BALANCE_GREYWORLD		= 10,
+ };
+ 
+ #define V4L2_CID_WIDE_DYNAMIC_RANGE		(V4L2_CID_CAMERA_CLASS_BASE+21)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0172-staging-bcm2835-camera-Add-greyworld-AWB-mode.patch b/target/linux/bcm27xx/patches-5.15/950-0172-staging-bcm2835-camera-Add-greyworld-AWB-mode.patch
new file mode 100644
index 0000000000..c04ea84fb9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0172-staging-bcm2835-camera-Add-greyworld-AWB-mode.patch
@@ -0,0 +1,37 @@
+From b1add6a1439bb036b8d40aba067251dc1ecee128 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Fri, 6 Sep 2019 15:13:06 +0100
+Subject: [PATCH] staging: bcm2835-camera: Add greyworld AWB mode
+
+This is mainly used for the NoIR camera which has no IR
+filter and can completely confuse normal AWB presets.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/staging/vc04_services/bcm2835-camera/controls.c    | 4 ++++
+ drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h | 1 +
+ 2 files changed, 5 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/controls.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c
+@@ -474,6 +474,10 @@ static int ctrl_set_awb_mode(struct bm28
+ 	case V4L2_WHITE_BALANCE_SHADE:
+ 		u32_value = MMAL_PARAM_AWBMODE_SHADE;
+ 		break;
++
++	case V4L2_WHITE_BALANCE_GREYWORLD:
++		u32_value = MMAL_PARAM_AWBMODE_GREYWORLD;
++		break;
+ 	}
+ 
+ 	return vchiq_mmal_port_parameter_set(dev->instance, control,
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -313,6 +313,7 @@ enum mmal_parameter_awbmode {
+ 	MMAL_PARAM_AWBMODE_INCANDESCENT,
+ 	MMAL_PARAM_AWBMODE_FLASH,
+ 	MMAL_PARAM_AWBMODE_HORIZON,
++	MMAL_PARAM_AWBMODE_GREYWORLD,
+ };
+ 
+ enum mmal_parameter_imagefx {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0173-drm-v3d-Delete-pm_runtime-support.patch b/target/linux/bcm27xx/patches-5.15/950-0173-drm-v3d-Delete-pm_runtime-support.patch
new file mode 100644
index 0000000000..950dd89b9c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0173-drm-v3d-Delete-pm_runtime-support.patch
@@ -0,0 +1,62 @@
+From 5154d39501380fa5680aea0fab0c3f3f2337fe1f Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 18 Sep 2019 17:22:36 +0100
+Subject: [PATCH] drm/v3d: Delete pm_runtime support
+
+The pm_runtime was blocking changelist submission, so delete it as a
+temporary workaround.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/gpu/drm/v3d/v3d_gem.c |  5 -----
+ drivers/gpu/drm/v3d/v3d_mmu.c | 11 -----------
+ 2 files changed, 16 deletions(-)
+
+--- a/drivers/gpu/drm/v3d/v3d_gem.c
++++ b/drivers/gpu/drm/v3d/v3d_gem.c
+@@ -485,10 +485,6 @@ v3d_job_init(struct v3d_dev *v3d, struct
+ 	job->v3d = v3d;
+ 	job->free = free;
+ 
+-	ret = pm_runtime_get_sync(v3d->drm.dev);
+-	if (ret < 0)
+-		return ret;
+-
+ 	xa_init_flags(&job->deps, XA_FLAGS_ALLOC);
+ 
+ 	ret = drm_syncobj_find_fence(file_priv, in_sync, 0, 0, &in_fence);
+@@ -505,7 +501,6 @@ v3d_job_init(struct v3d_dev *v3d, struct
+ 	return 0;
+ fail:
+ 	xa_destroy(&job->deps);
+-	pm_runtime_put_autosuspend(v3d->drm.dev);
+ 	return ret;
+ }
+ 
+--- a/drivers/gpu/drm/v3d/v3d_mmu.c
++++ b/drivers/gpu/drm/v3d/v3d_mmu.c
+@@ -36,14 +36,6 @@ static int v3d_mmu_flush_all(struct v3d_
+ {
+ 	int ret;
+ 
+-	/* Keep power on the device on until we're done with this
+-	 * call, but skip the flush if the device is off and will be
+-	 * reset when powered back on.
+-	 */
+-	ret = pm_runtime_get_if_in_use(v3d->dev);
+-	if (ret == 0)
+-		return 0;
+-
+ 	/* Make sure that another flush isn't already running when we
+ 	 * start this one.
+ 	 */
+@@ -71,9 +63,6 @@ static int v3d_mmu_flush_all(struct v3d_
+ 	if (ret)
+ 		dev_err(v3d->drm.dev, "MMUC flush wait idle failed\n");
+ 
+-	pm_runtime_mark_last_busy(v3d->dev);
+-	pm_runtime_put_autosuspend(v3d->dev);
+-
+ 	return ret;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0174-ARM-bcm-Switch-board-clk-and-pinctrl-to-bcm2711-comp.patch b/target/linux/bcm27xx/patches-5.15/950-0174-ARM-bcm-Switch-board-clk-and-pinctrl-to-bcm2711-comp.patch
new file mode 100644
index 0000000000..e693bf6c72
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0174-ARM-bcm-Switch-board-clk-and-pinctrl-to-bcm2711-comp.patch
@@ -0,0 +1,26 @@
+From 649b32054e8ca34c671ebf0a57726b33e3c1e0cf Mon Sep 17 00:00:00 2001
+From: Stefan Wahren <wahrenst@gmx.net>
+Date: Thu, 19 Sep 2019 20:45:30 +0200
+Subject: [PATCH] ARM: bcm: Switch board, clk and pinctrl to bcm2711
+ compatible
+
+After the decision to use bcm2711 compatible for upstream, we should
+switch all accepted compatibles to bcm2711. So we can boot with
+one DTB the down- and the upstream kernel.
+
+Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -109,7 +109,7 @@ static const char * const bcm2835_compat
+ #ifdef CONFIG_ARCH_MULTI_V7
+ 	"brcm,bcm2836",
+ 	"brcm,bcm2837",
+-	"brcm,bcm2838",
++	"brcm,bcm2711",
+ #endif
+ 	NULL
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0175-Rename-HDMI-ALSA-device-names-check-for-enable-state.patch b/target/linux/bcm27xx/patches-5.15/950-0175-Rename-HDMI-ALSA-device-names-check-for-enable-state.patch
new file mode 100644
index 0000000000..c7d703434c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0175-Rename-HDMI-ALSA-device-names-check-for-enable-state.patch
@@ -0,0 +1,139 @@
+From 078a4914aaa74a3af8262b29ff82011b9e752a8e Mon Sep 17 00:00:00 2001
+From: James Hughes <james.hughes@raspberrypi.org>
+Date: Tue, 24 Sep 2019 18:26:55 +0100
+Subject: [PATCH] Rename HDMI ALSA device names, check for enable state
+
+HDMI Alsa devices renamed to match names used by DRM, to
+HDMI 1 and HDMI 2
+
+Check for which HDMI devices are connected and only create
+devices for those that are present.
+
+The rename of the devices might cause some backwards compatibility
+issues, but since this particular part of the driver needs to be
+specifically enabled, I suspect the number of people who will see
+the problem will be very small.
+
+Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
+---
+ .../vc04_services/bcm2835-audio/bcm2835.c     | 70 +++++++++++++++++--
+ 1 file changed, 63 insertions(+), 7 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -9,8 +9,9 @@
+ #include <linux/of.h>
+ 
+ #include "bcm2835.h"
++#include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+-static bool enable_hdmi;
++static bool enable_hdmi, enable_hdmi0, enable_hdmi1;
+ static bool enable_headphones;
+ static bool enable_compat_alsa = true;
+ 
+@@ -115,8 +116,8 @@ static struct bcm2835_audio_driver bcm28
+ 		.name = "bcm2835_hdmi",
+ 		.owner = THIS_MODULE,
+ 	},
+-	.shortname = "bcm2835 HDMI",
+-	.longname  = "bcm2835 HDMI",
++	.shortname = "bcm2835 HDMI 1",
++	.longname  = "bcm2835 HDMI 1",
+ 	.minchannels = 1,
+ 	.newpcm = bcm2835_audio_simple_newpcm,
+ 	.newctl = snd_bcm2835_new_hdmi_ctl,
+@@ -128,8 +129,8 @@ static struct bcm2835_audio_driver bcm28
+ 		.name = "bcm2835_hdmi",
+ 		.owner = THIS_MODULE,
+ 	},
+-	.shortname = "bcm2835 HDMI 1",
+-	.longname  = "bcm2835 HDMI 1",
++	.shortname = "bcm2835 HDMI 2",
++	.longname  = "bcm2835 HDMI 2",
+ 	.minchannels = 1,
+ 	.newpcm = bcm2835_audio_simple_newpcm,
+ 	.newctl = snd_bcm2835_new_hdmi_ctl,
+@@ -161,11 +162,11 @@ static struct bcm2835_audio_drivers chil
+ 	},
+ 	{
+ 		.audio_driver = &bcm2835_audio_hdmi0,
+-		.is_enabled = &enable_hdmi,
++		.is_enabled = &enable_hdmi0,
+ 	},
+ 	{
+ 		.audio_driver = &bcm2835_audio_hdmi1,
+-		.is_enabled = &enable_hdmi,
++		.is_enabled = &enable_hdmi1,
+ 	},
+ 	{
+ 		.audio_driver = &bcm2835_audio_headphones,
+@@ -312,6 +313,53 @@ static int snd_add_child_devices(struct
+ 	return 0;
+ }
+ 
++static void set_hdmi_enables(struct device *dev)
++{
++	struct device_node *firmware_node;
++	struct rpi_firmware *firmware;
++	u32 num_displays, i, display_id;
++	int ret;
++
++	firmware_node = of_parse_phandle(dev->of_node, "brcm,firmware", 0);
++	firmware = rpi_firmware_get(firmware_node);
++
++	if (!firmware)
++		return;
++
++	of_node_put(firmware_node);
++
++	ret = rpi_firmware_property(firmware,
++				    RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS,
++				    &num_displays, sizeof(u32));
++
++	if (ret)
++		return;
++
++	for (i = 0; i < num_displays; i++) {
++		display_id = i;
++		ret = rpi_firmware_property(firmware,
++				RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_ID,
++				&display_id, sizeof(display_id));
++		if (!ret) {
++			if (display_id == 2)
++				enable_hdmi0 = true;
++			if (display_id == 7)
++				enable_hdmi1 = true;
++		}
++	}
++
++	if (!enable_hdmi0 && enable_hdmi1) {
++		/* Swap them over and reassign route. This means
++		 * that if we only have one connected, it is always named
++		 *  HDMI1, irrespective of if its on port HDMI0 or HDMI1.
++		 *  This should match with the naming of HDMI ports in DRM
++		 */
++		enable_hdmi0 = true;
++		enable_hdmi1 = false;
++		bcm2835_audio_hdmi0.route = AUDIO_DEST_HDMI1;
++	}
++}
++
+ static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
+@@ -332,6 +380,14 @@ static int snd_bcm2835_alsa_probe(struct
+ 			 numchans);
+ 	}
+ 
++	if (!enable_compat_alsa) {
++		set_hdmi_enables(dev);
++		// In this mode, always enable analog output
++		enable_headphones = true;
++	} else {
++		enable_hdmi0 = enable_hdmi;
++	}
++
+ 	err = bcm2835_devm_add_vchi_ctx(dev);
+ 	if (err)
+ 		return err;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0176-dt-bindings-Add-binding-for-the-Infineon-IRS1125-sen.patch b/target/linux/bcm27xx/patches-5.15/950-0176-dt-bindings-Add-binding-for-the-Infineon-IRS1125-sen.patch
new file mode 100644
index 0000000000..6bb69afe79
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0176-dt-bindings-Add-binding-for-the-Infineon-IRS1125-sen.patch
@@ -0,0 +1,66 @@
+From 7f8a55f4fb9999e1be64a682bf314dfeb0d9cf30 Mon Sep 17 00:00:00 2001
+From: Markus Proeller <markus.proeller@pieye.org>
+Date: Thu, 10 Oct 2019 19:12:08 +0200
+Subject: [PATCH] dt-bindings: Add binding for the Infineon IRS1125
+ sensor
+
+Adds a binding for the Infineon IRS1125 time-of-flight depth
+sensor.
+
+Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
+---
+ .../devicetree/bindings/media/i2c/irs1125.txt | 48 +++++++++++++++++++
+ 1 file changed, 48 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/i2c/irs1125.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/i2c/irs1125.txt
+@@ -0,0 +1,48 @@
++* Infineon irs1125 time of flight sensor
++
++The Infineon irs1125 is a time of flight digital image sensor with
++an active array size of 352H x 286V. It is programmable through I2C
++interface. The I2C address defaults to 0x3D, but can be reconfigured
++to address 0x3C or 0x41 via I2C commands. Image data is sent through
++MIPI CSI-2, which is configured as either 1 or 2 data lanes.
++
++Required Properties:
++- compatible: value should be "infineon,irs1125" for irs1125 sensor
++- reg: I2C bus address of the device
++- clocks: reference to the xclk input clock.
++- pwdn-gpios: reference to the GPIO connected to the reset pin.
++	      This is an active low signal to the iirs1125.
++
++The irs1125 device node should contain one 'port' child node with
++an 'endpoint' subnode. For further reading on port node refer to
++Documentation/devicetree/bindings/media/video-interfaces.txt.
++
++Endpoint node required properties for CSI-2 connection are:
++- remote-endpoint: a phandle to the bus receiver's endpoint node.
++- clock-lanes: should be set to <0> (clock lane on hardware lane 0)
++- data-lanes: should be set to <1> or <1 2> (one or two lane CSI-2
++  supported)
++
++Example:
++	sensor@10 {
++		compatible = "infineon,irs1125";
++		reg = <0x3D>;
++		#address-cells = <1>;
++		#size-cells = <0>;
++		clocks = <&irs1125_clk>;
++		pwdn-gpios = <&gpio 5 0>;
++
++		irs1125_clk: camera-clk {
++			compatible = "fixed-clock";
++			#clock-cells = <0>;
++			clock-frequency = <26000000>;
++		};
++
++		port {
++			sensor_out: endpoint {
++				remote-endpoint = <&csiss_in>;
++				clock-lanes = <0>;
++				data-lanes = <1 2>;
++			};
++		};
++	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0177-media-i2c-Add-a-driver-for-the-Infineon-IRS1125-dept.patch b/target/linux/bcm27xx/patches-5.15/950-0177-media-i2c-Add-a-driver-for-the-Infineon-IRS1125-dept.patch
new file mode 100644
index 0000000000..b2731c8925
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0177-media-i2c-Add-a-driver-for-the-Infineon-IRS1125-dept.patch
@@ -0,0 +1,1231 @@
+From 42cc216cba4e0086086a56ff17120c96881d4967 Mon Sep 17 00:00:00 2001
+From: Markus Proeller <markus.proeller@pieye.org>
+Date: Thu, 10 Oct 2019 19:12:36 +0200
+Subject: [PATCH] media: i2c: Add a driver for the Infineon IRS1125
+ depth sensor
+
+The Infineon IRS1125 is a time of flight depth sensor that
+has a CSI-2 interface.
+
+Add a V4L2 subdevice driver for this device.
+
+Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
+---
+ drivers/media/i2c/Kconfig   |   12 +
+ drivers/media/i2c/Makefile  |    1 +
+ drivers/media/i2c/irs1125.c | 1112 +++++++++++++++++++++++++++++++++++
+ drivers/media/i2c/irs1125.h |   61 ++
+ 4 files changed, 1186 insertions(+)
+ create mode 100644 drivers/media/i2c/irs1125.c
+ create mode 100644 drivers/media/i2c/irs1125.h
+
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -1187,6 +1187,18 @@ config VIDEO_OV13858
+ 	  This is a Video4Linux2 sensor driver for the OmniVision
+ 	  OV13858 camera.
+ 
++config VIDEO_IRS1125
++	tristate "Infineon IRS1125 sensor support"
++	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
++	depends on MEDIA_CAMERA_SUPPORT
++	select V4L2_FWNODE
++	help
++	  This is a Video4Linux2 sensor-level driver for the Infineon
++	  IRS1125 camera.
++
++	  To compile this driver as a module, choose M here: the
++	  module will be called irs1125.
++
+ config VIDEO_VS6624
+ 	tristate "ST VS6624 sensor support"
+ 	depends on VIDEO_V4L2 && I2C
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -89,6 +89,7 @@ obj-$(CONFIG_VIDEO_OV9640) += ov9640.o
+ obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
+ obj-$(CONFIG_VIDEO_OV9734) += ov9734.o
+ obj-$(CONFIG_VIDEO_OV13858) += ov13858.o
++obj-$(CONFIG_VIDEO_IRS1125) += irs1125.o
+ obj-$(CONFIG_VIDEO_MT9M001) += mt9m001.o
+ obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o
+ obj-$(CONFIG_VIDEO_MT9M111) += mt9m111.o
+--- /dev/null
++++ b/drivers/media/i2c/irs1125.c
+@@ -0,0 +1,1112 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * A V4L2 driver for Infineon IRS1125 TOF cameras.
++ * Copyright (C) 2018, pieye GmbH
++ *
++ * Based on V4L2 OmniVision OV5647 Image Sensor driver
++ * Copyright (C) 2016 Ramiro Oliveira <roliveir@synopsys.com>
++ *
++ * DT / fwnode changes, and GPIO control taken from ov5640.c
++ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
++ * Copyright (C) 2014-2017 Mentor Graphics Inc.
++ *
++ */
++
++#include "irs1125.h"
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/i2c.h>
++#include <linux/init.h>
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of_graph.h>
++#include <linux/slab.h>
++#include <linux/videodev2.h>
++#include <linux/firmware.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-fwnode.h>
++#include <media/v4l2-image-sizes.h>
++#include <media/v4l2-mediabus.h>
++#include <media/v4l2-ctrls.h>
++
++#define CHECK_BIT(val, pos) ((val) & BIT(pos))
++
++#define SENSOR_NAME "irs1125"
++
++#define RESET_ACTIVE_DELAY_MS	 20
++
++#define IRS1125_ALTERNATE_FW "irs1125_af.bin"
++
++#define IRS1125_REG_CSICFG       0xA882
++#define IRS1125_REG_DESIGN_STEP	 0xB0AD
++#define IRS1125_REG_EFUSEVAL2	 0xB09F
++#define IRS1125_REG_EFUSEVAL3	 0xB0A0
++#define IRS1125_REG_EFUSEVAL4	 0xB0A1
++#define IRS1125_REG_DMEM_SHADOW	 0xC320
++
++#define IRS1125_DESIGN_STEP_EXPECTED 0x0a12
++
++#define IRS1125_ROW_START_DEF		0
++#define IRS1125_COLUMN_START_DEF	0
++#define IRS1125_WINDOW_HEIGHT_DEF	 288
++#define IRS1125_WINDOW_WIDTH_DEF	352
++
++struct regval_list {
++	u16 addr;
++	u16 data;
++};
++
++struct irs1125 {
++	struct v4l2_subdev sd;
++	struct media_pad pad;
++	/* the parsed DT endpoint info */
++	struct v4l2_fwnode_endpoint ep;
++
++	struct clk *xclk;
++	struct v4l2_ctrl_handler ctrl_handler;
++
++	/* To serialize asynchronus callbacks */
++	struct mutex lock;
++
++	/* image data layout */
++	unsigned int num_seq;
++
++	/* reset pin */
++	struct gpio_desc *reset;
++
++	/* V4l2 Controls to grab */
++	struct v4l2_ctrl *ctrl_modplls;
++	struct v4l2_ctrl *ctrl_numseq;
++
++	int power_count;
++};
++
++static inline struct irs1125 *to_state(struct v4l2_subdev *sd)
++{
++	return container_of(sd, struct irs1125, sd);
++}
++
++static struct regval_list irs1125_26MHz[] = {
++	{0xB017, 0x0413},
++	{0xB086, 0x3535},
++	{0xB0AE, 0xEF02},
++	{0xA000, 0x0004},
++	{0xFFFF, 100},
++
++	{0xB062, 0x6383},
++	{0xB063, 0x55A8},
++	{0xB068, 0x7628},
++	{0xB069, 0x03E2},
++
++	{0xFFFF, 100},
++	{0xB05A, 0x01C5},
++	{0xB05C, 0x0206},
++	{0xB05D, 0x01C5},
++	{0xB05F, 0x0206},
++	{0xB016, 0x1335},
++	{0xFFFF, 100},
++	{0xA893, 0x8261},
++	{0xA894, 0x89d8},
++	{0xA895, 0x131d},
++	{0xA896, 0x4251},
++	{0xA897, 0x9D8A},
++	{0xA898, 0x0BD8},
++	{0xA899, 0x2245},
++	{0xA89A, 0xAB9B},
++	{0xA89B, 0x03B9},
++	{0xA89C, 0x8041},
++	{0xA89D, 0xE07E},
++	{0xA89E, 0x0307},
++	{0xFFFF, 100},
++	{0xA88D, 0x0004},
++	{0xA800, 0x0E68},
++	{0xA801, 0x0000},
++	{0xA802, 0x000C},
++	{0xA803, 0x0000},
++	{0xA804, 0x0E68},
++	{0xA805, 0x0000},
++	{0xA806, 0x0440},
++	{0xA807, 0x0000},
++	{0xA808, 0x0E68},
++	{0xA809, 0x0000},
++	{0xA80A, 0x0884},
++	{0xA80B, 0x0000},
++	{0xA80C, 0x0E68},
++	{0xA80D, 0x0000},
++	{0xA80E, 0x0CC8},
++	{0xA80F, 0x0000},
++	{0xA810, 0x0E68},
++	{0xA811, 0x0000},
++	{0xA812, 0x2000},
++	{0xA813, 0x0000},
++	{0xA882, 0x0081},
++	{0xA88C, 0x403A},
++	{0xA88F, 0x031E},
++	{0xA892, 0x0351},
++	{0x9813, 0x13FF},
++	{0x981B, 0x7608},
++
++	{0xB008, 0x0000},
++	{0xB015, 0x1513},
++
++	{0xFFFF, 100}
++};
++
++static struct regval_list irs1125_seq_cfg[] = {
++	{0xC3A0, 0x823D},
++	{0xC3A1, 0xB13B},
++	{0xC3A2, 0x0313},
++	{0xC3A3, 0x4659},
++	{0xC3A4, 0xC4EC},
++	{0xC3A5, 0x03CE},
++	{0xC3A6, 0x4259},
++	{0xC3A7, 0xC4EC},
++	{0xC3A8, 0x03CE},
++	{0xC3A9, 0x8839},
++	{0xC3AA, 0x89D8},
++	{0xC3AB, 0x031D},
++
++	{0xC24C, 0x5529},
++	{0xC24D, 0x0000},
++	{0xC24E, 0x1200},
++	{0xC24F, 0x6CB2},
++	{0xC250, 0x0000},
++	{0xC251, 0x5529},
++	{0xC252, 0x42F4},
++	{0xC253, 0xD1AF},
++	{0xC254, 0x8A18},
++	{0xC255, 0x0002},
++	{0xC256, 0x5529},
++	{0xC257, 0x6276},
++	{0xC258, 0x11A7},
++	{0xC259, 0xD907},
++	{0xC25A, 0x0000},
++	{0xC25B, 0x5529},
++	{0xC25C, 0x07E0},
++	{0xC25D, 0x7BFE},
++	{0xC25E, 0x6402},
++	{0xC25F, 0x0019},
++
++	{0xC3AC, 0x0007},
++	{0xC3AD, 0xED88},
++	{0xC320, 0x003E},
++	{0xC321, 0x0000},
++	{0xC322, 0x2000},
++	{0xC323, 0x0000},
++	{0xC324, 0x0271},
++	{0xC325, 0x0000},
++	{0xC326, 0x000C},
++	{0xC327, 0x0000},
++	{0xC328, 0x0271},
++	{0xC329, 0x0000},
++	{0xC32A, 0x0440},
++	{0xC32B, 0x0000},
++	{0xC32C, 0x0271},
++	{0xC32D, 0x0000},
++	{0xC32E, 0x0884},
++	{0xC32F, 0x0000},
++	{0xC330, 0x0271},
++	{0xC331, 0x0000},
++	{0xC332, 0x0CC8},
++	{0xC333, 0x0000},
++	{0xA88D, 0x0004},
++
++	{0xA890, 0x0000},
++	{0xC219, 0x0002},
++	{0xC21A, 0x0000},
++	{0xC21B, 0x0000},
++	{0xC21C, 0x00CD},
++	{0xC21D, 0x0009},
++	{0xC21E, 0x00CD},
++	{0xC21F, 0x0009},
++
++	{0xA87C, 0x0000},
++	{0xC032, 0x0001},
++	{0xC034, 0x0000},
++	{0xC035, 0x0001},
++	{0xC039, 0x0000},
++	{0xC401, 0x0002},
++
++	{0xFFFF, 1},
++	{0xA87C, 0x0001}
++};
++
++static int irs1125_write(struct v4l2_subdev *sd, u16 reg, u16 val)
++{
++	int ret;
++	unsigned char data[4] = { reg >> 8, reg & 0xff, val >> 8, val & 0xff};
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++
++	ret = i2c_master_send(client, data, 4);
++	if (ret < 0)
++		dev_err(&client->dev, "%s: i2c write error, reg: %x\n",
++			__func__, reg);
++
++	return ret;
++}
++
++static int irs1125_read(struct v4l2_subdev *sd, u16 reg, u16 *val)
++{
++	int ret;
++	unsigned char data_w[2] = { reg >> 8, reg & 0xff };
++	char rdval[2];
++
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++
++	ret = i2c_master_send(client, data_w, 2);
++	if (ret < 0) {
++		dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
++			__func__, reg);
++		return ret;
++	}
++
++	ret = i2c_master_recv(client, rdval, 2);
++	if (ret < 0)
++		dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
++			__func__, reg);
++
++	*val = rdval[1] | (rdval[0] << 8);
++
++	return ret;
++}
++
++static int irs1125_write_array(struct v4l2_subdev *sd,
++			       struct regval_list *regs, int array_size)
++{
++	int i, ret;
++
++	for (i = 0; i < array_size; i++) {
++		if (regs[i].addr == 0xFFFF) {
++			msleep(regs[i].data);
++		} else {
++			ret = irs1125_write(sd, regs[i].addr, regs[i].data);
++			if (ret < 0)
++				return ret;
++		}
++	}
++
++	return 0;
++}
++
++static int irs1125_stream_on(struct v4l2_subdev *sd)
++{
++	int ret;
++	struct irs1125 *irs1125 = to_state(sd);
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++
++	v4l2_ctrl_grab(irs1125->ctrl_numseq, 1);
++	v4l2_ctrl_grab(irs1125->ctrl_modplls, 1);
++
++	ret = irs1125_write(sd, 0xC400, 0x0001);
++	if (ret < 0) {
++		dev_err(&client->dev, "error enabling firmware: %d", ret);
++		return ret;
++	}
++
++	msleep(100);
++
++	return irs1125_write(sd, 0xA87C, 0x0001);
++}
++
++static int irs1125_stream_off(struct v4l2_subdev *sd)
++{
++	int ret;
++	struct irs1125 *irs1125 = to_state(sd);
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++
++	v4l2_ctrl_grab(irs1125->ctrl_numseq, 0);
++	v4l2_ctrl_grab(irs1125->ctrl_modplls, 0);
++
++	ret = irs1125_write(sd, 0xA87C, 0x0000);
++	if (ret < 0) {
++		dev_err(&client->dev, "error disabling trigger: %d", ret);
++		return ret;
++	}
++
++	msleep(100);
++
++	return irs1125_write(sd, 0xC400, 0x0002);
++}
++
++static int __sensor_init(struct v4l2_subdev *sd)
++{
++	unsigned int cnt, idx;
++	int ret;
++	u16 val;
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	struct irs1125 *irs1125 = to_state(sd);
++	const struct firmware *fw;
++	struct regval_list *reg_data;
++
++	cnt = 0;
++	while (1) {
++		ret = irs1125_read(sd, 0xC40F, &val);
++		if (ret < 0) {
++			dev_err(&client->dev, "read register 0xC40F failed\n");
++			return ret;
++		}
++		if (CHECK_BIT(val, 14) == 0)
++			break;
++
++		if (cnt >= 5) {
++			dev_err(&client->dev, "timeout waiting for 0xC40F\n");
++			return -EAGAIN;
++		}
++
++		cnt++;
++	}
++
++	ret = irs1125_write_array(sd, irs1125_26MHz,
++				  ARRAY_SIZE(irs1125_26MHz));
++	if (ret < 0) {
++		dev_err(&client->dev, "write sensor default regs error\n");
++		return ret;
++	}
++
++	/* set CSI-2 number of data lanes */
++	if (irs1125->ep.bus.mipi_csi2.num_data_lanes == 1) {
++		val = 0x0001;
++	} else if (irs1125->ep.bus.mipi_csi2.num_data_lanes == 2) {
++		val = 0x0081;
++	} else {
++		dev_err(&client->dev, "invalid number of data lanes %d\n",
++			irs1125->ep.bus.mipi_csi2.num_data_lanes);
++		return -EINVAL;
++	}
++
++	ret = irs1125_write(sd, IRS1125_REG_CSICFG, val);
++	if (ret < 0) {
++		dev_err(&client->dev, "write sensor csi2 config error\n");
++		return ret;
++	}
++
++	/* request the firmware, this will block and timeout */
++	ret = request_firmware(&fw, IRS1125_ALTERNATE_FW, &client->dev);
++	if (ret) {
++		dev_err(&client->dev,
++			"did not find the firmware file '%s' (status %d)\n",
++			IRS1125_ALTERNATE_FW, ret);
++		return ret;
++	}
++
++	if (fw->size % 4) {
++		dev_err(&client->dev, "firmware file '%s' invalid\n",
++			IRS1125_ALTERNATE_FW);
++		release_firmware(fw);
++		return -EINVAL;
++	}
++
++	for (idx = 0; idx < fw->size; idx += 4)	{
++		reg_data = (struct regval_list *)&fw->data[idx];
++		ret = irs1125_write(sd, reg_data->addr, reg_data->data);
++		if (ret < 0) {
++			dev_err(&client->dev, "firmware write error\n");
++			release_firmware(fw);
++			return ret;
++		}
++	}
++	release_firmware(fw);
++
++	ret = irs1125_write_array(sd, irs1125_seq_cfg,
++				  ARRAY_SIZE(irs1125_seq_cfg));
++	if (ret < 0) {
++		dev_err(&client->dev, "write default sequence failed\n");
++		return ret;
++	}
++
++	return 0;
++}
++
++static int irs1125_sensor_power(struct v4l2_subdev *sd, int on)
++{
++	int ret = 0;
++	struct irs1125 *irs1125 = to_state(sd);
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++
++	mutex_lock(&irs1125->lock);
++
++	if (on && !irs1125->power_count) {
++		gpiod_set_value_cansleep(irs1125->reset, 1);
++		msleep(RESET_ACTIVE_DELAY_MS);
++
++		ret = clk_prepare_enable(irs1125->xclk);
++		if (ret < 0) {
++			dev_err(&client->dev, "clk prepare enable failed\n");
++			goto out;
++		}
++
++		ret = __sensor_init(sd);
++		if (ret < 0) {
++			clk_disable_unprepare(irs1125->xclk);
++			dev_err(&client->dev,
++				"Camera not available, check Power\n");
++			goto out;
++		}
++	} else if (!on && irs1125->power_count == 1) {
++		gpiod_set_value_cansleep(irs1125->reset, 0);
++	}
++
++	/* Update the power count. */
++	irs1125->power_count += on ? 1 : -1;
++	WARN_ON(irs1125->power_count < 0);
++
++out:
++	mutex_unlock(&irs1125->lock);
++
++	return ret;
++}
++
++#ifdef CONFIG_VIDEO_ADV_DEBUG
++static int irs1125_sensor_get_register(struct v4l2_subdev *sd,
++				       struct v4l2_dbg_register *reg)
++{
++	u16 val;
++	int ret;
++
++	ret = irs1125_read(sd, reg->reg & 0xffff, &val);
++	if (ret < 0)
++		return ret;
++
++	reg->val = val;
++	reg->size = 1;
++
++	return 0;
++}
++
++static int irs1125_sensor_set_register(struct v4l2_subdev *sd,
++				       const struct v4l2_dbg_register *reg)
++{
++	return irs1125_write(sd, reg->reg & 0xffff, reg->val & 0xffff);
++}
++#endif
++
++static const struct v4l2_subdev_core_ops irs1125_subdev_core_ops = {
++	.s_power = irs1125_sensor_power,
++#ifdef CONFIG_VIDEO_ADV_DEBUG
++	.g_register = irs1125_sensor_get_register,
++	.s_register = irs1125_sensor_set_register,
++#endif
++};
++
++static int irs1125_s_stream(struct v4l2_subdev *sd, int enable)
++{
++	if (enable)
++		return irs1125_stream_on(sd);
++	else
++		return irs1125_stream_off(sd);
++}
++
++static const struct v4l2_subdev_video_ops irs1125_subdev_video_ops = {
++	.s_stream = irs1125_s_stream,
++};
++
++static int irs1125_enum_mbus_code(struct v4l2_subdev *sd,
++				  struct v4l2_subdev_pad_config *cfg,
++	struct v4l2_subdev_mbus_code_enum *code)
++{
++	if (code->index > 0)
++		return -EINVAL;
++
++	code->code = MEDIA_BUS_FMT_Y12_1X12;
++
++	return 0;
++}
++
++static int irs1125_set_get_fmt(struct v4l2_subdev *sd,
++			       struct v4l2_subdev_pad_config *cfg,
++			       struct v4l2_subdev_format *format)
++{
++	struct v4l2_mbus_framefmt *fmt = &format->format;
++	struct irs1125 *irs1125 = to_state(sd);
++
++	if (format->pad != 0)
++		return -EINVAL;
++
++	/* Only one format is supported, so return that */
++	memset(fmt, 0, sizeof(*fmt));
++	fmt->code = MEDIA_BUS_FMT_Y12_1X12;
++	fmt->colorspace = V4L2_COLORSPACE_RAW;
++	fmt->field = V4L2_FIELD_NONE;
++	fmt->width = IRS1125_WINDOW_WIDTH_DEF;
++	fmt->height = IRS1125_WINDOW_HEIGHT_DEF * irs1125->num_seq;
++
++	return 0;
++}
++
++static const struct v4l2_subdev_pad_ops irs1125_subdev_pad_ops = {
++	.enum_mbus_code = irs1125_enum_mbus_code,
++	.set_fmt = irs1125_set_get_fmt,
++	.get_fmt = irs1125_set_get_fmt,
++};
++
++static const struct v4l2_subdev_ops irs1125_subdev_ops = {
++	.core = &irs1125_subdev_core_ops,
++	.video = &irs1125_subdev_video_ops,
++	.pad = &irs1125_subdev_pad_ops,
++};
++
++static int irs1125_s_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct irs1125 *dev = container_of(ctrl->handler,
++					struct irs1125, ctrl_handler);
++	struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
++	int err, i;
++	struct irs1125_mod_pll *mod_cur, *mod_new;
++	struct irs1125_seq_cfg *cfg_cur, *cfg_new;
++	u16 addr, val;
++
++	err = 0;
++
++	switch (ctrl->id) {
++	case IRS1125_CID_SAFE_RECONFIG:
++	{
++		struct irs1125_illu *illu_cur, *illu_new;
++
++		illu_new = (struct irs1125_illu *)ctrl->p_new.p;
++		illu_cur = (struct irs1125_illu *)ctrl->p_cur.p;
++		for (i = 0; i < IRS1125_NUM_SEQ_ENTRIES; i++) {
++			if (illu_cur[i].exposure != illu_new[i].exposure) {
++				addr = 0xA850 + i * 2;
++				val = illu_new[i].exposure;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (illu_cur[i].framerate != illu_new[i].framerate) {
++				addr = 0xA851 + i * 2;
++				val = illu_new[i].framerate;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++		}
++		break;
++	}
++	case IRS1125_CID_MOD_PLL:
++		mod_new = (struct irs1125_mod_pll *)ctrl->p_new.p;
++		mod_cur = (struct irs1125_mod_pll *)ctrl->p_cur.p;
++		for (i = 0; i < IRS1125_NUM_MOD_PLLS; i++) {
++			if (mod_cur[i].pllcfg1 != mod_new[i].pllcfg1) {
++				addr = 0xC3A0 + i * 3;
++				val = mod_new[i].pllcfg1;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (mod_cur[i].pllcfg2 != mod_new[i].pllcfg2) {
++				addr = 0xC3A1 + i * 3;
++				val = mod_new[i].pllcfg2;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (mod_cur[i].pllcfg3 != mod_new[i].pllcfg3) {
++				addr = 0xC3A2 + i * 3;
++				val = mod_new[i].pllcfg3;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (mod_cur[i].pllcfg4 != mod_new[i].pllcfg4) {
++				addr = 0xC24C + i * 5;
++				val = mod_new[i].pllcfg4;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (mod_cur[i].pllcfg5 != mod_new[i].pllcfg5) {
++				addr = 0xC24D + i * 5;
++				val = mod_new[i].pllcfg5;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (mod_cur[i].pllcfg6 != mod_new[i].pllcfg6) {
++				addr = 0xC24E + i * 5;
++				val = mod_new[i].pllcfg6;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (mod_cur[i].pllcfg7 != mod_new[i].pllcfg7) {
++				addr = 0xC24F + i * 5;
++				val = mod_new[i].pllcfg7;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (mod_cur[i].pllcfg8 != mod_new[i].pllcfg8) {
++				addr = 0xC250 + i * 5;
++				val = mod_new[i].pllcfg8;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++		}
++		break;
++	case IRS1125_CID_SEQ_CONFIG:
++		cfg_new = (struct irs1125_seq_cfg *)ctrl->p_new.p;
++		cfg_cur = (struct irs1125_seq_cfg *)ctrl->p_cur.p;
++		for (i = 0; i < IRS1125_NUM_SEQ_ENTRIES; i++) {
++			if (cfg_cur[i].exposure != cfg_new[i].exposure)	{
++				addr = IRS1125_REG_DMEM_SHADOW + i * 4;
++				val = cfg_new[i].exposure;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (cfg_cur[i].framerate != cfg_new[i].framerate) {
++				addr = IRS1125_REG_DMEM_SHADOW + 1 + i * 4;
++				val = cfg_new[i].framerate;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (cfg_cur[i].ps != cfg_new[i].ps) {
++				addr = IRS1125_REG_DMEM_SHADOW + 2 + i * 4;
++				val = cfg_new[i].ps;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++			if (cfg_cur[i].pll != cfg_new[i].pll) {
++				addr = IRS1125_REG_DMEM_SHADOW + 3 + i * 4;
++				val = cfg_new[i].pll;
++				err = irs1125_write(&dev->sd, addr, val);
++				if (err < 0)
++					break;
++			}
++		}
++		break;
++	case IRS1125_CID_NUM_SEQS:
++		err = irs1125_write(&dev->sd, 0xA88D, ctrl->val - 1);
++		if (err >= 0)
++			dev->num_seq = ctrl->val;
++		break;
++	case IRS1125_CID_CONTINUOUS_TRIG:
++		if (ctrl->val == 0)
++			err = irs1125_write(&dev->sd, 0xA87C, 0);
++		else
++			err = irs1125_write(&dev->sd, 0xA87C, 1);
++		break;
++	case IRS1125_CID_TRIGGER:
++		if (ctrl->val != 0) {
++			err = irs1125_write(&dev->sd, 0xA87C, 1);
++			if (err >= 0)
++				err = irs1125_write(&dev->sd, 0xA87C, 0);
++		}
++		break;
++	case IRS1125_CID_RECONFIG:
++		if (ctrl->val != 0)
++			err = irs1125_write(&dev->sd, 0xA87A, 1);
++		break;
++	case IRS1125_CID_ILLU_ON:
++		if (ctrl->val == 0)
++			err = irs1125_write(&dev->sd, 0xA892, 0x377);
++		else
++			err = irs1125_write(&dev->sd, 0xA892, 0x355);
++		break;
++	default:
++		break;
++	}
++
++	if (err < 0)
++		dev_err(&client->dev, "Error executing control ID: %d, val %d, err %d",
++			ctrl->id, ctrl->val, err);
++	else
++		err = 0;
++
++	return err;
++}
++
++static const struct v4l2_ctrl_ops irs1125_ctrl_ops = {
++	.s_ctrl = irs1125_s_ctrl,
++};
++
++static const struct v4l2_ctrl_config irs1125_custom_ctrls[] = {
++	{
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_NUM_SEQS,
++		.name = "Change number of sequences",
++		.type = V4L2_CTRL_TYPE_INTEGER,
++		.flags = V4L2_CTRL_FLAG_MODIFY_LAYOUT,
++		.min = 1,
++		.max = 20,
++		.step = 1,
++		.def = 5,
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_MOD_PLL,
++		.name = "Reconfigure modulation PLLs",
++		.type = V4L2_CTRL_TYPE_U16,
++		.flags = V4L2_CTRL_FLAG_HAS_PAYLOAD,
++		.min = 0,
++		.max = U16_MAX,
++		.step = 1,
++		.def = 0,
++		.elem_size = sizeof(u16),
++		.dims = {sizeof(struct irs1125_mod_pll) / sizeof(u16),
++			IRS1125_NUM_MOD_PLLS}
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_SAFE_RECONFIG,
++		.name = "Change exposure and pause of single seq",
++		.type = V4L2_CTRL_TYPE_U16,
++		.flags = V4L2_CTRL_FLAG_HAS_PAYLOAD,
++		.min = 0,
++		.max = U16_MAX,
++		.step = 1,
++		.def = 0,
++		.elem_size = sizeof(u16),
++		.dims = {sizeof(struct irs1125_illu) / sizeof(u16),
++			IRS1125_NUM_SEQ_ENTRIES}
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_SEQ_CONFIG,
++		.name = "Change sequence settings",
++		.type = V4L2_CTRL_TYPE_U16,
++		.flags = V4L2_CTRL_FLAG_HAS_PAYLOAD,
++		.min = 0,
++		.max = U16_MAX,
++		.step = 1,
++		.def = 0,
++		.elem_size = sizeof(u16),
++		.dims = {sizeof(struct irs1125_seq_cfg) / sizeof(u16),
++			IRS1125_NUM_SEQ_ENTRIES}
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_CONTINUOUS_TRIG,
++		.name = "Enable/disable continuous trigger",
++		.type = V4L2_CTRL_TYPE_BOOLEAN,
++		.flags = V4L2_CTRL_FLAG_EXECUTE_ON_WRITE,
++		.min = 0,
++		.max = 1,
++		.step = 1,
++		.def = 0
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_TRIGGER,
++		.name = "Capture a single sequence",
++		.type = V4L2_CTRL_TYPE_BOOLEAN,
++		.flags = V4L2_CTRL_FLAG_EXECUTE_ON_WRITE,
++		.min = 0,
++		.max = 1,
++		.step = 1,
++		.def = 0
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_RECONFIG,
++		.name = "Trigger imager reconfiguration",
++		.type = V4L2_CTRL_TYPE_BOOLEAN,
++		.flags = V4L2_CTRL_FLAG_EXECUTE_ON_WRITE,
++		.min = 0,
++		.max = 1,
++		.step = 1,
++		.def = 0
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_ILLU_ON,
++		.name = "Turn illu on or off",
++		.type = V4L2_CTRL_TYPE_BOOLEAN,
++		.flags = V4L2_CTRL_FLAG_EXECUTE_ON_WRITE,
++		.min = 0,
++		.max = 1,
++		.step = 1,
++		.def = 1
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_IDENT0,
++		.name = "Get ident 0 information",
++		.type = V4L2_CTRL_TYPE_INTEGER,
++		.flags = V4L2_CTRL_FLAG_READ_ONLY,
++		.min = S32_MIN,
++		.max = S32_MAX,
++		.step = 1,
++		.def = 0
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_IDENT1,
++		.name = "Get ident 1 information",
++		.type = V4L2_CTRL_TYPE_INTEGER,
++		.flags = V4L2_CTRL_FLAG_READ_ONLY,
++		.min = S32_MIN,
++		.max = S32_MAX,
++		.step = 1,
++		.def = 0
++	}, {
++		.ops = &irs1125_ctrl_ops,
++		.id = IRS1125_CID_IDENT2,
++		.name = "Get ident 2 information",
++		.type = V4L2_CTRL_TYPE_INTEGER,
++		.flags = V4L2_CTRL_FLAG_READ_ONLY,
++		.min = S32_MIN,
++		.max = S32_MAX,
++		.step = 1,
++		.def = 0
++	}
++};
++
++static int irs1125_detect(struct v4l2_subdev *sd)
++{
++	u16 read;
++	int ret;
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++
++	ret = irs1125_read(sd, IRS1125_REG_DESIGN_STEP, &read);
++	if (ret < 0) {
++		dev_err(&client->dev, "error reading from i2c\n");
++		return ret;
++	}
++
++	if (read != IRS1125_DESIGN_STEP_EXPECTED) {
++		dev_err(&client->dev, "Design step expected 0x%x got 0x%x",
++			IRS1125_DESIGN_STEP_EXPECTED, read);
++		return -ENODEV;
++	}
++
++	return 0;
++}
++
++static int irs1125_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct v4l2_mbus_framefmt *format =
++	v4l2_subdev_get_try_format(sd, fh->pad, 0);
++
++	format->code = MEDIA_BUS_FMT_Y12_1X12;
++	format->width = IRS1125_WINDOW_WIDTH_DEF;
++	format->height = IRS1125_WINDOW_HEIGHT_DEF;
++	format->field = V4L2_FIELD_NONE;
++	format->colorspace = V4L2_COLORSPACE_RAW;
++
++	return 0;
++}
++
++static const struct v4l2_subdev_internal_ops irs1125_subdev_internal_ops = {
++	.open = irs1125_open,
++};
++
++static int irs1125_ctrls_init(struct irs1125 *sensor, struct device *dev)
++{
++	struct v4l2_ctrl *ctrl;
++	int err, i;
++	struct v4l2_ctrl_handler *hdl;
++
++	hdl = &sensor->ctrl_handler;
++	v4l2_ctrl_handler_init(hdl, ARRAY_SIZE(irs1125_custom_ctrls));
++
++	for (i = 0; i < ARRAY_SIZE(irs1125_custom_ctrls); i++)	{
++		ctrl = v4l2_ctrl_new_custom(hdl, &irs1125_custom_ctrls[i],
++					    NULL);
++		if (!ctrl)
++			dev_err(dev, "Failed to init custom control %s\n",
++				irs1125_custom_ctrls[i].name);
++		else if (irs1125_custom_ctrls[i].id == IRS1125_CID_NUM_SEQS)
++			sensor->ctrl_numseq = ctrl;
++		else if (irs1125_custom_ctrls[i].id == IRS1125_CID_MOD_PLL)
++			sensor->ctrl_modplls = ctrl;
++	}
++
++	if (hdl->error)	{
++		dev_err(dev, "Error %d adding controls\n", hdl->error);
++		err = hdl->error;
++		goto error_ctrls;
++	}
++
++	sensor->sd.ctrl_handler = hdl;
++	return 0;
++
++error_ctrls:
++	v4l2_ctrl_handler_free(&sensor->ctrl_handler);
++	return -err;
++}
++
++static int irs1125_ident_setup(struct irs1125 *sensor, struct device *dev)
++{
++	int ret;
++	struct v4l2_ctrl *ctrl;
++	struct v4l2_subdev *sd;
++	u16 read;
++
++	sd = &sensor->sd;
++
++	ctrl = v4l2_ctrl_find(&sensor->ctrl_handler, IRS1125_CID_IDENT0);
++	if (!ctrl) {
++		dev_err(dev, "could not find device ctrl.\n");
++		return -EINVAL;
++	}
++
++	ret = irs1125_read(sd, IRS1125_REG_EFUSEVAL2, &read);
++	if (ret < 0) {
++		dev_err(dev, "error reading from i2c\n");
++		return -EIO;
++	}
++
++	v4l2_ctrl_s_ctrl(ctrl, read);
++
++	ctrl = v4l2_ctrl_find(&sensor->ctrl_handler, IRS1125_CID_IDENT1);
++	if (!ctrl) {
++		dev_err(dev, "could not find device ctrl.\n");
++		return -EINVAL;
++	}
++
++	ret = irs1125_read(sd, IRS1125_REG_EFUSEVAL3, &read);
++	if (ret < 0) {
++		dev_err(dev, "error reading from i2c\n");
++		return -EIO;
++	}
++
++	v4l2_ctrl_s_ctrl(ctrl, read);
++
++	ctrl = v4l2_ctrl_find(&sensor->ctrl_handler, IRS1125_CID_IDENT2);
++	if (!ctrl) {
++		dev_err(dev, "could not find device ctrl.\n");
++		return -EINVAL;
++	}
++
++	ret = irs1125_read(sd, IRS1125_REG_EFUSEVAL4, &read);
++	if (ret < 0) {
++		dev_err(dev, "error reading from i2c\n");
++		return -EIO;
++	}
++	v4l2_ctrl_s_ctrl(ctrl, read & 0xFFFC);
++
++	return 0;
++}
++
++static int irs1125_probe(struct i2c_client *client,
++			 const struct i2c_device_id *id)
++{
++	struct device *dev = &client->dev;
++	struct irs1125 *sensor;
++	int ret;
++	struct fwnode_handle *endpoint;
++	u32 xclk_freq;
++	int gpio_num;
++
++	sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
++	if (!sensor)
++		return -ENOMEM;
++
++	v4l2_i2c_subdev_init(&sensor->sd, client, &irs1125_subdev_ops);
++
++	/* Get CSI2 bus config */
++	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev),
++						  NULL);
++	if (!endpoint) {
++		dev_err(dev, "endpoint node not found\n");
++		return -EINVAL;
++	}
++
++	ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep);
++	fwnode_handle_put(endpoint);
++	if (ret) {
++		dev_err(dev, "Could not parse endpoint\n");
++		return ret;
++	}
++
++	/* get system clock (xclk) */
++	sensor->xclk = devm_clk_get(dev, NULL);
++	if (IS_ERR(sensor->xclk)) {
++		dev_err(dev, "could not get xclk");
++		return PTR_ERR(sensor->xclk);
++	}
++
++	xclk_freq = clk_get_rate(sensor->xclk);
++	if (xclk_freq != 26000000) {
++		dev_err(dev, "Unsupported clock frequency: %u\n", xclk_freq);
++		return -EINVAL;
++	}
++
++	sensor->num_seq = 5;
++
++	/* Request the power down GPIO */
++	sensor->reset = devm_gpiod_get(&client->dev, "pwdn",
++				       GPIOD_OUT_LOW);
++
++	if (IS_ERR(sensor->reset)) {
++		dev_err(dev, "could not get reset");
++		return PTR_ERR(sensor->reset);
++	}
++
++	gpio_num = desc_to_gpio(sensor->reset);
++
++	mutex_init(&sensor->lock);
++
++	ret = irs1125_ctrls_init(sensor, dev);
++	if (ret < 0)
++		goto mutex_remove;
++
++	sensor->sd.internal_ops = &irs1125_subdev_internal_ops;
++	sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
++	sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
++	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
++	ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
++	if (ret < 0)
++		goto mutex_remove;
++
++	gpiod_set_value_cansleep(sensor->reset, 1);
++	msleep(RESET_ACTIVE_DELAY_MS);
++
++	ret = irs1125_detect(&sensor->sd);
++	if (ret < 0)
++		goto error;
++
++	ret = irs1125_ident_setup(sensor, dev);
++	if (ret < 0)
++		goto error;
++
++	gpiod_set_value_cansleep(sensor->reset, 0);
++
++	ret = v4l2_async_register_subdev(&sensor->sd);
++	if (ret < 0)
++		goto error;
++
++	dev_dbg(dev, "Infineon IRS1125 camera driver probed\n");
++
++	return 0;
++
++error:
++	media_entity_cleanup(&sensor->sd.entity);
++mutex_remove:
++	mutex_destroy(&sensor->lock);
++	return ret;
++}
++
++static int irs1125_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct irs1125 *irs1125 = to_state(sd);
++
++	v4l2_async_unregister_subdev(&irs1125->sd);
++	media_entity_cleanup(&irs1125->sd.entity);
++	v4l2_device_unregister_subdev(sd);
++	mutex_destroy(&irs1125->lock);
++	v4l2_ctrl_handler_free(&irs1125->ctrl_handler);
++
++	return 0;
++}
++
++#if IS_ENABLED(CONFIG_OF)
++static const struct of_device_id irs1125_of_match[] = {
++	{ .compatible = "infineon,irs1125" },
++	{ /* sentinel */ },
++};
++MODULE_DEVICE_TABLE(of, irs1125_of_match);
++#endif
++
++static struct i2c_driver irs1125_driver = {
++	.driver = {
++		.of_match_table = of_match_ptr(irs1125_of_match),
++		.name	 = SENSOR_NAME,
++	},
++	.probe		= irs1125_probe,
++	.remove		= irs1125_remove,
++};
++
++module_i2c_driver(irs1125_driver);
++
++MODULE_AUTHOR("Markus Proeller <markus.proeller@pieye.org>");
++MODULE_DESCRIPTION("Infineon irs1125 sensor driver");
++MODULE_LICENSE("GPL v2");
++
+--- /dev/null
++++ b/drivers/media/i2c/irs1125.h
+@@ -0,0 +1,61 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * A V4L2 driver for Infineon IRS1125 TOF cameras.
++ * Copyright (C) 2018, pieye GmbH
++ *
++ * Based on V4L2 OmniVision OV5647 Image Sensor driver
++ * Copyright (C) 2016 Ramiro Oliveira <roliveir@synopsys.com>
++ *
++ * DT / fwnode changes, and GPIO control taken from ov5640.c
++ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
++ * Copyright (C) 2014-2017 Mentor Graphics Inc.
++ *
++ */
++
++#ifndef IRS1125_H
++#define IRS1125_H
++
++#include <linux/v4l2-controls.h>
++#include <linux/types.h>
++
++#define IRS1125_NUM_SEQ_ENTRIES 20
++#define IRS1125_NUM_MOD_PLLS 4
++
++#define IRS1125_CID_CUSTOM_BASE        (V4L2_CID_USER_BASE | 0xf000)
++#define IRS1125_CID_SAFE_RECONFIG      (IRS1125_CID_CUSTOM_BASE + 0)
++#define IRS1125_CID_CONTINUOUS_TRIG    (IRS1125_CID_CUSTOM_BASE + 1)
++#define IRS1125_CID_TRIGGER            (IRS1125_CID_CUSTOM_BASE + 2)
++#define IRS1125_CID_RECONFIG           (IRS1125_CID_CUSTOM_BASE + 3)
++#define IRS1125_CID_ILLU_ON            (IRS1125_CID_CUSTOM_BASE + 4)
++#define IRS1125_CID_NUM_SEQS           (IRS1125_CID_CUSTOM_BASE + 5)
++#define IRS1125_CID_MOD_PLL            (IRS1125_CID_CUSTOM_BASE + 6)
++#define IRS1125_CID_SEQ_CONFIG         (IRS1125_CID_CUSTOM_BASE + 7)
++#define IRS1125_CID_IDENT0             (IRS1125_CID_CUSTOM_BASE + 8)
++#define IRS1125_CID_IDENT1             (IRS1125_CID_CUSTOM_BASE + 9)
++#define IRS1125_CID_IDENT2             (IRS1125_CID_CUSTOM_BASE + 10)
++
++struct irs1125_seq_cfg {
++	__u16 exposure;
++	__u16 framerate;
++	__u16 ps;
++	__u16 pll;
++};
++
++struct irs1125_illu {
++	__u16 exposure;
++	__u16 framerate;
++};
++
++struct irs1125_mod_pll {
++	__u16 pllcfg1;
++	__u16 pllcfg2;
++	__u16 pllcfg3;
++	__u16 pllcfg4;
++	__u16 pllcfg5;
++	__u16 pllcfg6;
++	__u16 pllcfg7;
++	__u16 pllcfg8;
++};
++
++#endif /* IRS1125 */
++
diff --git a/target/linux/bcm27xx/patches-5.15/950-0178-drm-v3d-Suppress-all-but-the-first-MMU-error.patch b/target/linux/bcm27xx/patches-5.15/950-0178-drm-v3d-Suppress-all-but-the-first-MMU-error.patch
new file mode 100644
index 0000000000..c50260bc26
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0178-drm-v3d-Suppress-all-but-the-first-MMU-error.patch
@@ -0,0 +1,39 @@
+From ab12e353a3c4ecc58aac15a8ee5e98b12537d0a8 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 11 Nov 2019 20:18:08 +0000
+Subject: [PATCH] drm/v3d: Suppress all but the first MMU error
+
+The v3d driver currently encounters a lot of MMU PTE exceptions, so
+only log the first to avoid swamping the kernel log.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/gpu/drm/v3d/v3d_irq.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/gpu/drm/v3d/v3d_irq.c
++++ b/drivers/gpu/drm/v3d/v3d_irq.c
+@@ -177,6 +177,7 @@ v3d_hub_irq(int irq, void *arg)
+ 			"GMP",
+ 		};
+ 		const char *client = "?";
++		static int logged_error;
+ 
+ 		V3D_WRITE(V3D_MMU_CTL, V3D_READ(V3D_MMU_CTL));
+ 
+@@ -186,6 +187,7 @@ v3d_hub_irq(int irq, void *arg)
+ 				client = v3d41_axi_ids[axi_id];
+ 		}
+ 
++		if (!logged_error)
+ 		dev_err(v3d->drm.dev, "MMU error from client %s (%d) at 0x%llx%s%s%s\n",
+ 			client, axi_id, (long long)vio_addr,
+ 			((intsts & V3D_HUB_INT_MMU_WRV) ?
+@@ -194,6 +196,7 @@ v3d_hub_irq(int irq, void *arg)
+ 			 ", pte invalid" : ""),
+ 			((intsts & V3D_HUB_INT_MMU_CAP) ?
+ 			 ", cap exceeded" : ""));
++		logged_error = 1;
+ 		status = IRQ_HANDLED;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0179-drm-v3d-Plug-dma_fence-leak.patch b/target/linux/bcm27xx/patches-5.15/950-0179-drm-v3d-Plug-dma_fence-leak.patch
new file mode 100644
index 0000000000..30a6b5c41b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0179-drm-v3d-Plug-dma_fence-leak.patch
@@ -0,0 +1,28 @@
+From 4799df403a918e84b5e18aae9dfa99acf0786aa8 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 12 Nov 2019 16:41:21 +0000
+Subject: [PATCH] drm/v3d: Plug dma_fence leak
+
+The irq_fence and done_fence are given a reference that is never
+released. The necessary dma_fence_put()s seem to have been
+deleted in error in an earlier commit.
+
+Fixes: 0b73676836b2 ("drm/v3d: Clock V3D down when not in use.")
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/gpu/drm/v3d/v3d_gem.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/gpu/drm/v3d/v3d_gem.c
++++ b/drivers/gpu/drm/v3d/v3d_gem.c
+@@ -414,6 +414,9 @@ v3d_job_free(struct kref *ref)
+ 	}
+ 	xa_destroy(&job->deps);
+ 
++	dma_fence_put(job->irq_fence);
++	dma_fence_put(job->done_fence);
++
+ 	v3d_clock_up_put(v3d);
+ 
+ 	if (job->perfmon)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0180-staging-vchiq_arm-Register-vcsm-cma-as-a-platform-dr.patch b/target/linux/bcm27xx/patches-5.15/950-0180-staging-vchiq_arm-Register-vcsm-cma-as-a-platform-dr.patch
new file mode 100644
index 0000000000..3758b1db62
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0180-staging-vchiq_arm-Register-vcsm-cma-as-a-platform-dr.patch
@@ -0,0 +1,40 @@
+From 0b00eed5fcf4bec5cd4932673f9abba198a63e43 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 6 Nov 2019 13:57:48 +0000
+Subject: [PATCH] staging: vchiq_arm: Register vcsm-cma as a platform
+ driver
+
+Following the same pattern as bcm2835-camera and bcm2835-audio,
+register the vcsm-cma driver as a platform driver
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -67,6 +67,7 @@ struct vchiq_state g_state;
+ 
+ static struct platform_device *bcm2835_camera;
+ static struct platform_device *bcm2835_audio;
++static struct platform_device *vcsm_cma;
+ 
+ static struct vchiq_drvdata bcm2835_drvdata = {
+ 	.cache_line_size = 32,
+@@ -1838,6 +1839,7 @@ static int vchiq_probe(struct platform_d
+ 		goto error_exit;
+ 	}
+ 
++	vcsm_cma = vchiq_register_child(pdev, "vcsm-cma");
+ 	bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
+ 	bcm2835_audio = vchiq_register_child(pdev, "bcm2835_audio");
+ 
+@@ -1853,6 +1855,7 @@ static int vchiq_remove(struct platform_
+ {
+ 	platform_device_unregister(bcm2835_audio);
+ 	platform_device_unregister(bcm2835_camera);
++	platform_device_unregister(vcsm_cma);
+ 	vchiq_debugfs_deinit();
+ 	vchiq_deregister_chrdev();
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0181-staging-vchiq_arm-Register-bcm2835-codec-as-a-platfo.patch b/target/linux/bcm27xx/patches-5.15/950-0181-staging-vchiq_arm-Register-bcm2835-codec-as-a-platfo.patch
new file mode 100644
index 0000000000..be03f5b3e1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0181-staging-vchiq_arm-Register-bcm2835-codec-as-a-platfo.patch
@@ -0,0 +1,40 @@
+From 448957b26ff175acdad0a5facf61697be1dc9dec Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 6 Nov 2019 13:57:58 +0000
+Subject: [PATCH] staging: vchiq_arm: Register bcm2835-codec as a
+ platform driver
+
+Following the same pattern as bcm2835-camera and bcm2835-audio,
+register the V4L2 codec driver as a platform driver
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -67,6 +67,7 @@ struct vchiq_state g_state;
+ 
+ static struct platform_device *bcm2835_camera;
+ static struct platform_device *bcm2835_audio;
++static struct platform_device *bcm2835_codec;
+ static struct platform_device *vcsm_cma;
+ 
+ static struct vchiq_drvdata bcm2835_drvdata = {
+@@ -1840,6 +1841,7 @@ static int vchiq_probe(struct platform_d
+ 	}
+ 
+ 	vcsm_cma = vchiq_register_child(pdev, "vcsm-cma");
++	bcm2835_codec = vchiq_register_child(pdev, "bcm2835-codec");
+ 	bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
+ 	bcm2835_audio = vchiq_register_child(pdev, "bcm2835_audio");
+ 
+@@ -1855,6 +1857,7 @@ static int vchiq_remove(struct platform_
+ {
+ 	platform_device_unregister(bcm2835_audio);
+ 	platform_device_unregister(bcm2835_camera);
++	platform_device_unregister(bcm2835_codec);
+ 	platform_device_unregister(vcsm_cma);
+ 	vchiq_debugfs_deinit();
+ 	vchiq_deregister_chrdev();
diff --git a/target/linux/bcm27xx/patches-5.15/950-0182-net-phy-2711-Allow-ethernet-LED-mode-to-be-set-via-d.patch b/target/linux/bcm27xx/patches-5.15/950-0182-net-phy-2711-Allow-ethernet-LED-mode-to-be-set-via-d.patch
new file mode 100644
index 0000000000..1ff9583910
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0182-net-phy-2711-Allow-ethernet-LED-mode-to-be-set-via-d.patch
@@ -0,0 +1,55 @@
+From 84c4e27d24e8563945d5a3cdc922467051770986 Mon Sep 17 00:00:00 2001
+From: James Hughes <james.hughes@raspberrypi.org>
+Date: Thu, 31 Oct 2019 14:39:44 +0000
+Subject: [PATCH] net:phy:2711 Allow ethernet LED mode to be set via
+ device tree
+
+Add device tree entries and code to allow the specification of
+the lighting modes for the LED's on the ethernet connector.
+
+Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
+
+net:phy:2711 Change the default ethernet LED actions
+
+This should return default behaviour back to that of previous
+releases.
+---
+ drivers/net/phy/broadcom.c | 11 +++++++----
+ 1 file changed, 7 insertions(+), 4 deletions(-)
+
+--- a/drivers/net/phy/broadcom.c
++++ b/drivers/net/phy/broadcom.c
+@@ -316,6 +316,9 @@ static void bcm54xx_adjust_rxrefclk(stru
+ static int bcm54xx_config_init(struct phy_device *phydev)
+ {
+ 	int reg, err, val;
++	u32 led_modes[] = {BCM_LED_MULTICOLOR_LINK_ACT,
++			   BCM_LED_MULTICOLOR_LINK};
++	struct device_node *np = phydev->mdio.dev.of_node;
+ 
+ 	reg = phy_read(phydev, MII_BCM54XX_ECR);
+ 	if (reg < 0)
+@@ -371,10 +374,10 @@ static int bcm54xx_config_init(struct ph
+ 
+ 	bcm54xx_phydsp_config(phydev);
+ 
++	of_property_read_u32_array(np, "led-modes", led_modes, 2);
++
+ 	/* For non-SFP setups, encode link speed into LED1 and LED3 pair
+ 	 * (green/amber).
+-	 * Also flash these two LEDs on activity. This means configuring
+-	 * them for MULTICOLOR and encoding link/activity into them.
+ 	 * Don't do this for devices on an SFP module, since some of these
+ 	 * use the LED outputs to control the SFP LOS signal, and changing
+ 	 * these settings will cause LOS to malfunction.
+@@ -385,8 +388,8 @@ static int bcm54xx_config_init(struct ph
+ 		bcm_phy_write_shadow(phydev, BCM5482_SHD_LEDS1, val);
+ 
+ 		val = BCM_LED_MULTICOLOR_IN_PHASE |
+-			BCM5482_SHD_LEDS1_LED1(BCM_LED_MULTICOLOR_LINK_ACT) |
+-			BCM5482_SHD_LEDS1_LED3(BCM_LED_MULTICOLOR_LINK_ACT);
++			BCM5482_SHD_LEDS1_LED1(led_modes[0]) |
++			BCM5482_SHD_LEDS1_LED3(led_modes[1]);
+ 		bcm_phy_write_exp(phydev, BCM_EXP_MULTICOLOR, val);
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0183-v3d_drv-Handle-missing-clock-more-gracefully.patch b/target/linux/bcm27xx/patches-5.15/950-0183-v3d_drv-Handle-missing-clock-more-gracefully.patch
new file mode 100644
index 0000000000..ffb7b0185a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0183-v3d_drv-Handle-missing-clock-more-gracefully.patch
@@ -0,0 +1,27 @@
+From c22a0c1ce0ec4c468dcbdaff05d18f366522af9b Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Fri, 23 Aug 2019 16:34:38 +0100
+Subject: [PATCH] v3d_drv: Handle missing clock more gracefully
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/v3d/v3d_drv.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/v3d/v3d_drv.c
++++ b/drivers/gpu/drm/v3d/v3d_drv.c
+@@ -302,10 +302,10 @@ static int v3d_platform_drm_probe(struct
+ 	}
+ 
+ 	v3d->clk = devm_clk_get(dev, NULL);
+-	if (IS_ERR(v3d->clk)) {
+-		if (ret != -EPROBE_DEFER)
+-			dev_err(dev, "Failed to get clock\n");
+-		goto dev_free;
++	if (IS_ERR_OR_NULL(v3d->clk)) {
++		if (PTR_ERR(v3d->clk) != -EPROBE_DEFER)
++			dev_err(dev, "Failed to get clock (%ld)\n", PTR_ERR(v3d->clk));
++		return PTR_ERR(v3d->clk);
+ 	}
+ 	v3d->clk_up_rate = clk_get_rate(v3d->clk);
+ 	/* For downclocking, drop it to the minimum frequency we can get from
diff --git a/target/linux/bcm27xx/patches-5.15/950-0184-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch b/target/linux/bcm27xx/patches-5.15/950-0184-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch
new file mode 100644
index 0000000000..22698f493b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0184-v3d_gem-Kick-the-clock-so-firmware-knows-we-are-usin.patch
@@ -0,0 +1,27 @@
+From fe92d91a83eca58dd756fa2558470c3f68e36499 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Thu, 5 Sep 2019 17:59:14 +0100
+Subject: [PATCH] v3d_gem: Kick the clock so firmware knows we are
+ using firmware clock interface
+
+Setting the v3d clock to low value allows firmware to handle dvfs in case
+where v3d hardware is not being actively used (e.g. console use).
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/v3d/v3d_gem.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/gpu/drm/v3d/v3d_gem.c
++++ b/drivers/gpu/drm/v3d/v3d_gem.c
+@@ -955,6 +955,10 @@ v3d_gem_init(struct drm_device *dev)
+ 	mutex_init(&v3d->clk_lock);
+ 	INIT_DELAYED_WORK(&v3d->clk_down_work, v3d_clock_down_work);
+ 
++	/* kick the clock so firmware knows we are using firmware clock interface */
++	v3d_clock_up_get(v3d);
++	v3d_clock_up_put(v3d);
++
+ 	/* Note: We don't allocate address 0.  Various bits of HW
+ 	 * treat 0 as special, such as the occlusion query counters
+ 	 * where 0 means "disabled".
diff --git a/target/linux/bcm27xx/patches-5.15/950-0185-clk-raspberrypi-Allow-cpufreq-driver-to-also-adjust-.patch b/target/linux/bcm27xx/patches-5.15/950-0185-clk-raspberrypi-Allow-cpufreq-driver-to-also-adjust-.patch
new file mode 100644
index 0000000000..01e231bc5f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0185-clk-raspberrypi-Allow-cpufreq-driver-to-also-adjust-.patch
@@ -0,0 +1,25 @@
+From 8070a984b640fe0a15bd65b9b20852aa36e8dad4 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Mon, 9 Sep 2019 15:49:56 +0100
+Subject: [PATCH] clk-raspberrypi: Allow cpufreq driver to also adjust
+ gpu clocks
+
+For performance/power it is beneficial to adjust gpu clocks with arm clock.
+This is how the downstream cpufreq driver works
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -97,7 +97,7 @@ static int raspberrypi_clock_property(st
+ 	struct raspberrypi_firmware_prop msg = {
+ 		.id = cpu_to_le32(data->id),
+ 		.val = cpu_to_le32(*val),
+-		.disable_turbo = cpu_to_le32(1),
++		.disable_turbo = cpu_to_le32(0),
+ 	};
+ 	int ret;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0186-clk-bcm2835-Disable-v3d-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0186-clk-bcm2835-Disable-v3d-clock.patch
new file mode 100644
index 0000000000..21189080a7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0186-clk-bcm2835-Disable-v3d-clock.patch
@@ -0,0 +1,58 @@
+From 7c390f885d31474050761f86cea3ecd9efe40649 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 3 Sep 2019 20:28:00 +0100
+Subject: [PATCH] clk-bcm2835: Disable v3d clock
+
+This is controlled by firmware, see clk-raspberrypi.c
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 30 ++++++++++++------------------
+ 1 file changed, 12 insertions(+), 18 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -1735,16 +1735,12 @@ static const struct bcm2835_clk_desc clk
+ 		.hold_mask = CM_PLLA_HOLDCORE,
+ 		.fixed_divider = 1,
+ 		.flags = CLK_SET_RATE_PARENT),
+-	[BCM2835_PLLA_PER]	= REGISTER_PLL_DIV(
+-		SOC_ALL,
+-		.name = "plla_per",
+-		.source_pll = "plla",
+-		.cm_reg = CM_PLLA,
+-		.a2w_reg = A2W_PLLA_PER,
+-		.load_mask = CM_PLLA_LOADPER,
+-		.hold_mask = CM_PLLA_HOLDPER,
+-		.fixed_divider = 1,
+-		.flags = CLK_SET_RATE_PARENT),
++
++	/*
++	 * PLLA_PER is used for gpu clocks. Controlled by firmware, see
++	 * clk-raspberrypi.c.
++	 */
++
+ 	[BCM2835_PLLA_DSI0]	= REGISTER_PLL_DIV(
+ 		SOC_ALL,
+ 		.name = "plla_dsi0",
+@@ -2045,14 +2041,12 @@ static const struct bcm2835_clk_desc clk
+ 		.int_bits = 6,
+ 		.frac_bits = 0,
+ 		.tcnt_mux = 3),
+-	[BCM2835_CLOCK_V3D]	= REGISTER_VPU_CLK(
+-		SOC_ALL,
+-		.name = "v3d",
+-		.ctl_reg = CM_V3DCTL,
+-		.div_reg = CM_V3DDIV,
+-		.int_bits = 4,
+-		.frac_bits = 8,
+-		.tcnt_mux = 4),
++
++	/*
++	 * CLOCK_V3D is used for v3d clock. Controlled by firmware, see
++	 * clk-raspberrypi.c.
++	 */
++
+ 	/*
+ 	 * VPU clock.  This doesn't have an enable bit, since it drives
+ 	 * the bus for everything else, and is special so it doesn't need
diff --git a/target/linux/bcm27xx/patches-5.15/950-0187-staging-vchiq_arm-Set-up-dma-ranges-on-child-devices.patch b/target/linux/bcm27xx/patches-5.15/950-0187-staging-vchiq_arm-Set-up-dma-ranges-on-child-devices.patch
new file mode 100644
index 0000000000..4a638e6831
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0187-staging-vchiq_arm-Set-up-dma-ranges-on-child-devices.patch
@@ -0,0 +1,33 @@
+From 9b5c2f40b7534b5cd45abc9eaa42f388f66d6c99 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 29 Jan 2019 16:13:25 +0000
+Subject: [PATCH] staging: vchiq_arm: Set up dma ranges on child
+ devices
+
+The VCHIQ driver now loads the audio, camera, codec, and vc-sm
+drivers as platform drivers. However they were not being given
+the correct DMA configuration.
+
+Call of_dma_configure with the parent (VCHIQ) parameters to be
+inherited by the child.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c   | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -1790,6 +1790,12 @@ vchiq_register_child(struct platform_dev
+ 		child = NULL;
+ 	}
+ 
++	/*
++	 * We want the dma-ranges etc to be copied from the parent VCHIQ device
++	 * to be passed on to the children too.
++	 */
++	of_dma_configure(&new_dev->dev, pdev->dev.of_node, true);
++
+ 	return child;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0188-staging-vchiq-Use-the-old-dma-controller-for-OF-conf.patch b/target/linux/bcm27xx/patches-5.15/950-0188-staging-vchiq-Use-the-old-dma-controller-for-OF-conf.patch
new file mode 100644
index 0000000000..defb449598
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0188-staging-vchiq-Use-the-old-dma-controller-for-OF-conf.patch
@@ -0,0 +1,51 @@
+From 8ecf558fb871176710cf98d73fb35b043400d384 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 18 Jun 2019 12:15:50 +0100
+Subject: [PATCH] staging: vchiq: Use the old dma controller for OF
+ config on platform devices
+
+vchiq on Pi4 is no longer under the soc node, therefore it
+doesn't get the dma-ranges for the VPU.
+
+Switch to using the configuration of the old dma controller as
+that will set the dma-ranges correctly.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ .../interface/vchiq_arm/vchiq_arm.c             | 17 ++++++++++++++---
+ 1 file changed, 14 insertions(+), 3 deletions(-)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -1776,6 +1776,7 @@ vchiq_register_child(struct platform_dev
+ {
+ 	struct platform_device_info pdevinfo;
+ 	struct platform_device *child;
++	struct device_node *np;
+ 
+ 	memset(&pdevinfo, 0, sizeof(pdevinfo));
+ 
+@@ -1791,10 +1792,20 @@ vchiq_register_child(struct platform_dev
+ 	}
+ 
+ 	/*
+-	 * We want the dma-ranges etc to be copied from the parent VCHIQ device
+-	 * to be passed on to the children too.
++	 * We want the dma-ranges etc to be copied from a device with the
++	 * correct dma-ranges for the VPU.
++	 * VCHIQ on Pi4 is now under scb which doesn't get those dma-ranges.
++	 * Take the "dma" node as going to be suitable as it sees the world
++	 * through the same eyes as the VPU.
+ 	 */
+-	of_dma_configure(&new_dev->dev, pdev->dev.of_node, true);
++	np = of_find_node_by_path("dma");
++	if (!np)
++		np = pdev->dev.of_node;
++
++	of_dma_configure(&child->dev, np, true);
++
++	if (np != pdev->dev.of_node)
++		of_node_put(np);
+ 
+ 	return child;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0189-ARM-bcm-Backport-BCM2711-support-from-upstream.patch b/target/linux/bcm27xx/patches-5.15/950-0189-ARM-bcm-Backport-BCM2711-support-from-upstream.patch
new file mode 100644
index 0000000000..c3f6dbde2a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0189-ARM-bcm-Backport-BCM2711-support-from-upstream.patch
@@ -0,0 +1,47 @@
+From 54704dbd4f438852739334b7189cf9cb65e1f8e2 Mon Sep 17 00:00:00 2001
+From: Stefan Wahren <wahrenst@gmx.net>
+Date: Fri, 27 Dec 2019 11:40:56 +0100
+Subject: [PATCH] ARM: bcm: Backport BCM2711 support from upstream
+
+Make the BCM2711 a different machine, but keep it in board_bcm2835.
+
+Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 17 +++++++++++++++--
+ 1 file changed, 15 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -109,17 +109,30 @@ static const char * const bcm2835_compat
+ #ifdef CONFIG_ARCH_MULTI_V7
+ 	"brcm,bcm2836",
+ 	"brcm,bcm2837",
+-	"brcm,bcm2711",
+ #endif
+ 	NULL
+ };
+ 
+ DT_MACHINE_START(BCM2835, "BCM2835")
++	.map_io = bcm2835_map_io,
++	.init_machine = bcm2835_init,
++	.dt_compat = bcm2835_compat,
++	.smp = smp_ops(bcm2836_smp_ops),
++MACHINE_END
++
++static const char * const bcm2711_compat[] = {
++#ifdef CONFIG_ARCH_MULTI_V7
++	"brcm,bcm2711",
++#endif
++	NULL
++};
++
++DT_MACHINE_START(BCM2711, "BCM2711")
+ #if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
+ 	.dma_zone_size	= SZ_1G,
+ #endif
+ 	.map_io = bcm2835_map_io,
+ 	.init_machine = bcm2835_init,
+-	.dt_compat = bcm2835_compat,
++	.dt_compat = bcm2711_compat,
+ 	.smp = smp_ops(bcm2836_smp_ops),
+ MACHINE_END
diff --git a/target/linux/bcm27xx/patches-5.15/950-0190-Initialise-rpi-firmware-before-clk-bcm2835.patch b/target/linux/bcm27xx/patches-5.15/950-0190-Initialise-rpi-firmware-before-clk-bcm2835.patch
new file mode 100644
index 0000000000..1f7c5a2e35
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0190-Initialise-rpi-firmware-before-clk-bcm2835.patch
@@ -0,0 +1,47 @@
+From 02b606fbd70b9226e851d969828a1499cb7869bf Mon Sep 17 00:00:00 2001
+From: Luke Hinds <7058938+lukehinds@users.noreply.github.com>
+Date: Wed, 22 Jan 2020 16:03:00 +0000
+Subject: [PATCH] Initialise rpi-firmware before clk-bcm2835
+
+The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted
+Platform Module) having been registered when it initialises; otherwise
+it assumes there is no TPM. It has been observed on BCM2835 that IMA
+is initialised before TPM, and that initialising the BCM2835 clock
+driver before the firmware driver has the effect of reversing this
+order.
+
+Change the firmware driver to initialise at core_initcall, delaying the
+BCM2835 clock driver to postcore_initcall.
+
+See: https://github.com/raspberrypi/linux/issues/3291
+     https://github.com/raspberrypi/linux/pull/3297
+
+Signed-off-by: Luke Hinds <lhinds@redhat.com>
+Co-authored-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835.c  | 2 +-
+ drivers/firmware/raspberrypi.c | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -2423,7 +2423,7 @@ static int __init __bcm2835_clk_driver_i
+ {
+ 	return platform_driver_register(&bcm2835_clk_driver);
+ }
+-core_initcall(__bcm2835_clk_driver_init);
++postcore_initcall(__bcm2835_clk_driver_init);
+ 
+ MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
+ MODULE_DESCRIPTION("BCM2835 clock driver");
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -498,7 +498,7 @@ out2:
+ out1:
+ 	return ret;
+ }
+-subsys_initcall(rpi_firmware_init);
++core_initcall(rpi_firmware_init);
+ 
+ static void __init rpi_firmware_exit(void)
+ {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0191-staging-vchiq_arm-Give-vchiq-children-DT-nodes.patch b/target/linux/bcm27xx/patches-5.15/950-0191-staging-vchiq_arm-Give-vchiq-children-DT-nodes.patch
new file mode 100644
index 0000000000..bd74258d11
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0191-staging-vchiq_arm-Give-vchiq-children-DT-nodes.patch
@@ -0,0 +1,39 @@
+From 3fde6b7152cb9153e404a17b731188acadf1ddd9 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 3 Feb 2020 17:30:46 +0000
+Subject: [PATCH] staging: vchiq_arm: Give vchiq children DT nodes
+
+vchiq kernel clients are now instantiated as platform drivers rather
+than using DT, but the children of the vchiq interface may still
+benefit from access to DT properties. Give them the option of a
+a sub-node of the vchiq parent for configuration and to allow
+them to be disabled.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -1785,12 +1785,20 @@ vchiq_register_child(struct platform_dev
+ 	pdevinfo.id = PLATFORM_DEVID_NONE;
+ 	pdevinfo.dma_mask = DMA_BIT_MASK(32);
+ 
++	np = of_get_child_by_name(pdev->dev.of_node, name);
++
++	/* Skip the child if it is explicitly disabled */
++	if (np && !of_device_is_available(np))
++		return NULL;
++
+ 	child = platform_device_register_full(&pdevinfo);
+ 	if (IS_ERR(child)) {
+ 		dev_warn(&pdev->dev, "%s not registered\n", name);
+ 		child = NULL;
+ 	}
+ 
++	child->dev.of_node = np;
++
+ 	/*
+ 	 * We want the dma-ranges etc to be copied from a device with the
+ 	 * correct dma-ranges for the VPU.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0192-pinctrl-bcm2835-Remove-gpiochip-on-error.patch b/target/linux/bcm27xx/patches-5.15/950-0192-pinctrl-bcm2835-Remove-gpiochip-on-error.patch
new file mode 100644
index 0000000000..7ee6391d29
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0192-pinctrl-bcm2835-Remove-gpiochip-on-error.patch
@@ -0,0 +1,25 @@
+From ffec7861dda17a3da5f6337fbf89114f86437d7e Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 6 Jan 2020 16:04:30 +0000
+Subject: [PATCH] pinctrl: bcm2835: Remove gpiochip on error
+
+A failure in gpiochip_irqchip_add leads to a leak of a gpiochip. Fix
+the leak with the use of devm_gpiochip_add_data.
+
+Fixes: 85ae9e512f43 ("pinctrl: bcm2835: switch to GPIOLIB_IRQCHIP")
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -1321,7 +1321,7 @@ static int bcm2835_pinctrl_probe(struct
+ 	girq->default_type = IRQ_TYPE_NONE;
+ 	girq->handler = handle_level_irq;
+ 
+-	err = gpiochip_add_data(&pc->gpio_chip, pc);
++	err = devm_gpiochip_add_data(dev, &pc->gpio_chip, pc);
+ 	if (err) {
+ 		dev_err(dev, "could not add GPIO chip\n");
+ 		goto out_remove;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0193-drivers-char-vcio-Use-common-compat-header.patch b/target/linux/bcm27xx/patches-5.15/950-0193-drivers-char-vcio-Use-common-compat-header.patch
new file mode 100644
index 0000000000..f85e2961bd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0193-drivers-char-vcio-Use-common-compat-header.patch
@@ -0,0 +1,23 @@
+From 9d335660546d3ed85193ca0276f5bf8ca4ee61eb Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 2 Mar 2020 14:40:19 +0000
+Subject: [PATCH] drivers: char: vcio: Use common compat header
+
+The definition of compat_ptr is now common for most platforms, but
+requires the inclusion of <linux/compat.h>.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/char/broadcom/vcio.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/char/broadcom/vcio.c
++++ b/drivers/char/broadcom/vcio.c
+@@ -18,6 +18,7 @@
+ #include <linux/module.h>
+ #include <linux/slab.h>
+ #include <linux/uaccess.h>
++#include <linux/compat.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+ #define MBOX_CHAN_PROPERTY 8
diff --git a/target/linux/bcm27xx/patches-5.15/950-0194-video-fbdev-bcm2708_fb-Use-common-compat-header.patch b/target/linux/bcm27xx/patches-5.15/950-0194-video-fbdev-bcm2708_fb-Use-common-compat-header.patch
new file mode 100644
index 0000000000..ce7c44914a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0194-video-fbdev-bcm2708_fb-Use-common-compat-header.patch
@@ -0,0 +1,23 @@
+From 93e02e9bc3580a325b0b5c14103096000ad7181a Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 2 Mar 2020 14:42:23 +0000
+Subject: [PATCH] video: fbdev: bcm2708_fb: Use common compat header
+
+The definition of compat_ptr is now common for most platforms, but
+requires the inclusion of <linux/compat.h>.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/video/fbdev/bcm2708_fb.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/video/fbdev/bcm2708_fb.c
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -38,6 +38,7 @@
+ #include <linux/cred.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ #include <linux/mutex.h>
++#include <linux/compat.h>
+ 
+ //#define BCM2708_FB_DEBUG
+ #define MODULE_NAME "bcm2708_fb"
diff --git a/target/linux/bcm27xx/patches-5.15/950-0195-of-overlay-Correct-symbol-path-fixups.patch b/target/linux/bcm27xx/patches-5.15/950-0195-of-overlay-Correct-symbol-path-fixups.patch
new file mode 100644
index 0000000000..32befbd63d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0195-of-overlay-Correct-symbol-path-fixups.patch
@@ -0,0 +1,37 @@
+From 076a67c839a4fdadb9edce5ff71878b3ac8a71ed Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 6 Feb 2020 12:23:15 +0000
+Subject: [PATCH] of: overlay: Correct symbol path fixups
+
+When symbols from overlays are added to the live tree their paths must
+be rebased. The translated symbol is normally the result of joining
+the fragment-relative path (with a leading "/") to the target path
+(either copied directly from the "target-path" property or resolved
+from the phandle). This translation fails when the target is the root
+node (a common case for Raspberry Pi overlays) because the resulting
+path starts with a double slash. For example, if target-path is "/" and
+the fragment adds a node called "newnode", the label associated with
+that node will be assigned the path "//newnode", which can't be found
+in the tree.
+
+Fix the failure case by explicitly replacing a target path of "/" with
+an empty string.
+
+Fixes: d1651b03c2df ("of: overlay: add overlay symbols to live device tree")
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/of/overlay.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/of/overlay.c
++++ b/drivers/of/overlay.c
+@@ -245,6 +245,8 @@ static struct property *dup_and_fixup_sy
+ 	if (!target_path)
+ 		return NULL;
+ 	target_path_len = strlen(target_path);
++	if (!strcmp(target_path, "/"))
++		target_path_len = 0;
+ 
+ 	new_prop = kzalloc(sizeof(*new_prop), GFP_KERNEL);
+ 	if (!new_prop)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0196-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch b/target/linux/bcm27xx/patches-5.15/950-0196-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch
new file mode 100644
index 0000000000..defef5e84d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0196-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch
@@ -0,0 +1,77 @@
+From 52901b63694e99d83badfb1c6551a9b53c729ca7 Mon Sep 17 00:00:00 2001
+From: Jim Quinlan <jim2101024@gmail.com>
+Date: Mon, 15 Jan 2018 18:28:39 -0500
+Subject: [PATCH] dt-bindings: pci: Add DT docs for Brcmstb PCIe device
+
+The DT bindings description of the Brcmstb PCIe device is described.  This
+node can be used by almost all Broadcom settop box chips, using
+ARM, ARM64, or MIPS CPU architectures.
+
+Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
+---
+ .../devicetree/bindings/pci/brcmstb-pcie.txt  | 59 +++++++++++++++++++
+ 1 file changed, 59 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/pci/brcmstb-pcie.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pci/brcmstb-pcie.txt
+@@ -0,0 +1,59 @@
++Brcmstb PCIe Host Controller Device Tree Bindings
++
++Required Properties:
++- compatible
++  "brcm,bcm7425-pcie" -- for 7425 family MIPS-based SOCs.
++  "brcm,bcm7435-pcie" -- for 7435 family MIPS-based SOCs.
++  "brcm,bcm7445-pcie" -- for 7445 and later ARM based SOCs (not including
++      the 7278).
++  "brcm,bcm7278-pcie"  -- for 7278 family ARM-based SOCs.
++
++- reg -- the register start address and length for the PCIe reg block.
++- interrupts -- two interrupts are specified; the first interrupt is for
++     the PCI host controller and the second is for MSI if the built-in
++     MSI controller is to be used.
++- interrupt-names -- names of the interrupts (above): "pcie" and "msi".
++- #address-cells -- set to <3>.
++- #size-cells -- set to <2>.
++- #interrupt-cells: set to <1>.
++- interrupt-map-mask and interrupt-map, standard PCI properties to define the
++     mapping of the PCIe interface to interrupt numbers.
++- ranges: ranges for the PCI memory and I/O regions.
++- linux,pci-domain -- should be unique per host controller.
++
++Optional Properties:
++- clocks -- phandle of pcie clock.
++- clock-names -- set to "sw_pcie" if clocks is used.
++- dma-ranges -- Specifies the inbound memory mapping regions when
++     an "identity map" is not possible.
++- msi-controller -- this property is typically specified to have the
++     PCIe controller use its internal MSI controller.
++- msi-parent -- set to use an external MSI interrupt controller.
++- brcm,enable-ssc -- (boolean) indicates usage of spread-spectrum clocking.
++- max-link-speed --  (integer) indicates desired generation of link:
++     1 => 2.5 Gbps (gen1), 2 => 5.0 Gbps (gen2), 3 => 8.0 Gbps (gen3).
++
++Example Node:
++
++pcie0: pcie@f0460000 {
++		reg = <0x0 0xf0460000 0x0 0x9310>;
++		interrupts = <0x0 0x0 0x4>;
++		compatible = "brcm,bcm7445-pcie";
++		#address-cells = <3>;
++		#size-cells = <2>;
++		ranges = <0x02000000 0x00000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x08000000
++			  0x02000000 0x00000000 0x08000000 0x00000000 0xc8000000 0x00000000 0x08000000>;
++		#interrupt-cells = <1>;
++		interrupt-map-mask = <0 0 0 7>;
++		interrupt-map = <0 0 0 1 &intc 0 47 3
++				 0 0 0 2 &intc 0 48 3
++				 0 0 0 3 &intc 0 49 3
++				 0 0 0 4 &intc 0 50 3>;
++		clocks = <&sw_pcie0>;
++		clock-names = "sw_pcie";
++		msi-parent = <&pcie0>;  /* use PCIe's internal MSI controller */
++		msi-controller;         /* use PCIe's internal MSI controller */
++		brcm,ssc;
++		max-link-speed = <1>;
++		linux,pci-domain = <0>;
++	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0197-bcmgenet-Disable-skip_umac_reset-by-default.patch b/target/linux/bcm27xx/patches-5.15/950-0197-bcmgenet-Disable-skip_umac_reset-by-default.patch
new file mode 100644
index 0000000000..8fc4e758bb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0197-bcmgenet-Disable-skip_umac_reset-by-default.patch
@@ -0,0 +1,23 @@
+From 3c2f8fa921db8c7233bc89a13163bd80767d18fc Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 1 Apr 2020 11:22:44 +0100
+Subject: [PATCH] bcmgenet: Disable skip_umac_reset by default
+
+Possible fixed upstream by 'net: bcmgenet: keep MAC in reset until PHY is up'
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/net/ethernet/broadcom/genet/bcmgenet.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -67,7 +67,7 @@
+ 
+ /* Forward declarations */
+ static void bcmgenet_set_rx_mode(struct net_device *dev);
+-static bool skip_umac_reset = true;
++static bool skip_umac_reset = false;
+ module_param(skip_umac_reset, bool, 0444);
+ MODULE_PARM_DESC(skip_umac_reset, "Skip UMAC reset step");
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0198-drm-fourcc-Add-packed-10bit-YUV-4-2-0-format.patch b/target/linux/bcm27xx/patches-5.15/950-0198-drm-fourcc-Add-packed-10bit-YUV-4-2-0-format.patch
new file mode 100644
index 0000000000..613f74adb9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0198-drm-fourcc-Add-packed-10bit-YUV-4-2-0-format.patch
@@ -0,0 +1,55 @@
+From cf7d5f766e0a9eeb09271c36f546ac0a1fdc0444 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 24 Jan 2020 14:22:06 +0000
+Subject: [PATCH] drm/fourcc: Add packed 10bit YUV 4:2:0 format
+
+Adds a format that is 3 10bit YUV 4:2:0 samples packed into
+a 32bit work (with 2 spare bits).
+
+Supported on Broadcom BCM2711 chips.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/drm_fourcc.c  |  3 +++
+ include/uapi/drm/drm_fourcc.h | 11 +++++++++++
+ 2 files changed, 14 insertions(+)
+
+--- a/drivers/gpu/drm/drm_fourcc.c
++++ b/drivers/gpu/drm/drm_fourcc.c
+@@ -266,6 +266,9 @@ const struct drm_format_info *__drm_form
+ 		  .num_planes = 3, .char_per_block = { 2, 2, 2 },
+ 		  .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0,
+ 		  .vsub = 0, .is_yuv = true },
++		{ .format = DRM_FORMAT_P030,            .depth = 0,  .num_planes = 2,
++		  .char_per_block = { 4, 4, 0 }, .block_w = { 3, 0, 0 }, .block_h = { 1, 0, 0 },
++		  .hsub = 2, .vsub = 2, .is_yuv = true},
+ 	};
+ 
+ 	unsigned int i;
+--- a/include/uapi/drm/drm_fourcc.h
++++ b/include/uapi/drm/drm_fourcc.h
+@@ -325,6 +325,13 @@ extern "C" {
+ #define DRM_FORMAT_Q401		fourcc_code('Q', '4', '0', '1')
+ 
+ /*
++ * 2 plane YCbCr MSB aligned, 3 pixels packed into 4 bytes.
++ * index 0 = Y plane, [31:0] x:Y2:Y1:Y0 2:10:10:10 little endian
++ * index 1 = Cr:Cb plane, [63:0] x:Cr2:Cb2:Cr1:x:Cb1:Cr0:Cb0 [2:10:10:10:2:10:10:10] little endian
++ */
++#define DRM_FORMAT_P030		fourcc_code('P', '0', '3', '0') /* 2x2 subsampled Cr:Cb plane 10 bits per channel packed */
++
++/*
+  * 3 plane YCbCr
+  * index 0: Y plane, [7:0] Y
+  * index 1: Cb plane, [7:0] Cb
+@@ -842,6 +849,10 @@ drm_fourcc_canonicalize_nvidia_format_mo
+  * and UV.  Some SAND-using hardware stores UV in a separate tiled
+  * image from Y to reduce the column height, which is not supported
+  * with these modifiers.
++ *
++ * The DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT modifier is also
++ * supported for DRM_FORMAT_P030 where the columns remain as 128 bytes
++ * wide, but as this is a 10 bpp format that translates to 96 pixels.
+  */
+ 
+ #define DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(v) \
diff --git a/target/linux/bcm27xx/patches-5.15/950-0199-media-uapi-hevc-Add-scaling-matrix-control.patch b/target/linux/bcm27xx/patches-5.15/950-0199-media-uapi-hevc-Add-scaling-matrix-control.patch
new file mode 100644
index 0000000000..47d523a32e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0199-media-uapi-hevc-Add-scaling-matrix-control.patch
@@ -0,0 +1,154 @@
+From 49bdb5120b45a6c92e6f10d1d2db85f9d88ba1e3 Mon Sep 17 00:00:00 2001
+From: Jernej Skrabec <jernej.skrabec@siol.net>
+Date: Fri, 13 Dec 2019 17:04:25 +0100
+Subject: [PATCH] media: uapi: hevc: Add scaling matrix control
+
+Taken from https://patchwork.linuxtv.org/patch/60728/
+Changes (mainly documentation) have been requested.
+
+HEVC has a scaling matrix concept. Add support for it.
+
+Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
+---
+ .../media/v4l/ext-ctrls-codec.rst             | 41 +++++++++++++++++++
+ .../media/v4l/pixfmt-compressed.rst           |  5 ++-
+ drivers/media/v4l2-core/v4l2-ctrls.c          | 10 +++++
+ include/media/hevc-ctrls.h                    | 11 +++++
+ 4 files changed, 65 insertions(+), 2 deletions(-)
+
+--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
++++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+@@ -3181,6 +3181,47 @@ enum v4l2_mpeg_video_hevc_size_of_length
+ 
+     \normalsize
+ 
++``V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX (struct)``
++    Specifies the scaling matrix (as extracted from the bitstream) for
++    the associated HEVC slice data. The bitstream parameters are
++    defined according to :ref:`hevc`, section 7.4.5 "Scaling list
++    data semantics". For further documentation, refer to the above
++    specification, unless there is an explicit comment stating
++    otherwise.
++
++    .. note::
++
++       This compound control is not yet part of the public kernel API and
++       it is expected to change.
++
++.. c:type:: v4l2_ctrl_hevc_scaling_matrix
++
++.. cssclass:: longtable
++
++.. flat-table:: struct v4l2_ctrl_hevc_scaling_matrix
++    :header-rows:  0
++    :stub-columns: 0
++    :widths:       1 1 2
++
++    * - __u8
++      - ``scaling_list_4x4[6][16]``
++      -
++    * - __u8
++      - ``scaling_list_8x8[6][64]``
++      -
++    * - __u8
++      - ``scaling_list_16x16[6][64]``
++      -
++    * - __u8
++      - ``scaling_list_32x32[2][64]``
++      -
++    * - __u8
++      - ``scaling_list_dc_coef_16x16[6]``
++      -
++    * - __u8
++      - ``scaling_list_dc_coef_32x32[2]``
++      -
++
+ ``V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE (enum)``
+     Specifies the decoding mode to use. Currently exposes slice-based and
+     frame-based decoding but new modes might be added later on.
+--- a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
++++ b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
+@@ -195,8 +195,9 @@ Compressed Formats
+ 	Metadata associated with the frame to decode is required to be passed
+ 	through the following controls:
+         ``V4L2_CID_MPEG_VIDEO_HEVC_SPS``,
+-        ``V4L2_CID_MPEG_VIDEO_HEVC_PPS``, and
+-        ``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS``.
++        ``V4L2_CID_MPEG_VIDEO_HEVC_PPS``,
++        ``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS``, and
++        ``V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX``.
+ 	See the :ref:`associated Codec Control IDs <v4l2-mpeg-hevc>`.
+ 	Buffers associated with this pixel format must contain the appropriate
+ 	number of macroblocks to decode a full corresponding frame.
+--- a/drivers/media/v4l2-core/v4l2-ctrls.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls.c
+@@ -1042,6 +1042,7 @@ const char *v4l2_ctrl_get_name(u32 id)
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:			return "HEVC Sequence Parameter Set";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:			return "HEVC Picture Parameter Set";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:		return "HEVC Slice Parameters";
++	case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX:		return "HEVC Scaling Matrix";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:		return "HEVC Decode Mode";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:		return "HEVC Start Code";
+ 
+@@ -1527,6 +1528,9 @@ void v4l2_ctrl_fill(u32 id, const char *
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
+ 		*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
+ 		break;
++	case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX:
++		*type = V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX;
++		break;
+ 	case V4L2_CID_UNIT_CELL_SIZE:
+ 		*type = V4L2_CTRL_TYPE_AREA;
+ 		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
+@@ -2238,6 +2242,9 @@ static int std_validate_compound(const s
+ 
+ 		break;
+ 
++	case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX:
++		break;
++
+ 	case V4L2_CTRL_TYPE_AREA:
+ 		area = p;
+ 		if (!area->width || !area->height)
+@@ -2954,6 +2961,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+ 		elem_size = sizeof(struct v4l2_ctrl_hdr10_mastering_display);
+ 		break;
++	case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX:
++		elem_size = sizeof(struct v4l2_ctrl_hevc_scaling_matrix);
++		break;
+ 	case V4L2_CTRL_TYPE_AREA:
+ 		elem_size = sizeof(struct v4l2_area);
+ 		break;
+--- a/include/media/hevc-ctrls.h
++++ b/include/media/hevc-ctrls.h
+@@ -19,6 +19,7 @@
+ #define V4L2_CID_MPEG_VIDEO_HEVC_SPS		(V4L2_CID_CODEC_BASE + 1008)
+ #define V4L2_CID_MPEG_VIDEO_HEVC_PPS		(V4L2_CID_CODEC_BASE + 1009)
+ #define V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS	(V4L2_CID_CODEC_BASE + 1010)
++#define V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX	(V4L2_CID_CODEC_BASE + 1011)
+ #define V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS	(V4L2_CID_CODEC_BASE + 1012)
+ #define V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE	(V4L2_CID_CODEC_BASE + 1015)
+ #define V4L2_CID_MPEG_VIDEO_HEVC_START_CODE	(V4L2_CID_CODEC_BASE + 1016)
+@@ -27,6 +28,7 @@
+ #define V4L2_CTRL_TYPE_HEVC_SPS 0x0120
+ #define V4L2_CTRL_TYPE_HEVC_PPS 0x0121
+ #define V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS 0x0122
++#define V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX 0x0123
+ #define V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS 0x0124
+ 
+ enum v4l2_mpeg_video_hevc_decode_mode {
+@@ -238,4 +240,13 @@ struct v4l2_ctrl_hevc_decode_params {
+  */
+ #define V4L2_CID_HANTRO_HEVC_SLICE_HEADER_SKIP	(V4L2_CID_CODEC_HANTRO_BASE + 0)
+ 
++struct v4l2_ctrl_hevc_scaling_matrix {
++	__u8	scaling_list_4x4[6][16];
++	__u8	scaling_list_8x8[6][64];
++	__u8	scaling_list_16x16[6][64];
++	__u8	scaling_list_32x32[2][64];
++	__u8	scaling_list_dc_coef_16x16[6];
++	__u8	scaling_list_dc_coef_32x32[2];
++};
++
+ #endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0200-media-uapi-hevc-Add-segment-address-field.patch b/target/linux/bcm27xx/patches-5.15/950-0200-media-uapi-hevc-Add-segment-address-field.patch
new file mode 100644
index 0000000000..6bd8e11e58
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0200-media-uapi-hevc-Add-segment-address-field.patch
@@ -0,0 +1,59 @@
+From 8ed873d6e26bc706b0af3bef29f87e2975046222 Mon Sep 17 00:00:00 2001
+From: Jernej Skrabec <jernej.skrabec@siol.net>
+Date: Fri, 13 Dec 2019 17:04:27 +0100
+Subject: [PATCH] media: uapi: hevc: Add segment address field
+
+From https://patchwork.linuxtv.org/patch/60725/
+Changes requested, but mainly docs.
+
+If HEVC frame consists of multiple slices, segment address has to be
+known in order to properly decode it.
+
+Add segment address field to slice parameters.
+
+Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
+---
+ .../userspace-api/media/v4l/ext-ctrls-codec.rst          | 3 +++
+ include/media/hevc-ctrls.h                               | 9 +++++++--
+ 2 files changed, 10 insertions(+), 2 deletions(-)
+
+--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
++++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+@@ -2961,6 +2961,9 @@ enum v4l2_mpeg_video_hevc_size_of_length
+     * - __u32
+       - ``data_bit_offset``
+       - Offset (in bits) to the video data in the current slice data.
++    * - __u32
++      - ``slice_segment_addr``
++      -
+     * - __u8
+       - ``nal_unit_type``
+       -
+--- a/include/media/hevc-ctrls.h
++++ b/include/media/hevc-ctrls.h
+@@ -173,6 +173,10 @@ struct v4l2_ctrl_hevc_slice_params {
+ 	__u32	bit_size;
+ 	__u32	data_bit_offset;
+ 
++	/* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
++	__u32	slice_segment_addr;
++	__u32	num_entry_point_offsets;
++
+ 	/* ISO/IEC 23008-2, ITU-T Rec. H.265: NAL unit header */
+ 	__u8	nal_unit_type;
+ 	__u8	nuh_temporal_id_plus1;
+@@ -198,11 +202,12 @@ struct v4l2_ctrl_hevc_slice_params {
+ 	__u8	pic_struct;
+ 
+ 	/* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
+-	__u32	slice_segment_addr;
+ 	__u8	ref_idx_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ 	__u8	ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ 
+-	__u8	padding;
++	__u8	padding[5];
++
++	__u32	entry_point_offset_minus1[256];
+ 
+ 	/* ISO/IEC 23008-2, ITU-T Rec. H.265: Weighted prediction parameter */
+ 	struct v4l2_hevc_pred_weight_table pred_weight_table;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0201-media-videodev2.h-Add-a-format-for-column-YUV4-2-0-m.patch b/target/linux/bcm27xx/patches-5.15/950-0201-media-videodev2.h-Add-a-format-for-column-YUV4-2-0-m.patch
new file mode 100644
index 0000000000..7be5b7c579
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0201-media-videodev2.h-Add-a-format-for-column-YUV4-2-0-m.patch
@@ -0,0 +1,308 @@
+From 3bb73f2d98cb2d4a86412ad34090bb7bd11c0e53 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 24 Jan 2020 14:28:21 +0000
+Subject: [PATCH] media: videodev2.h: Add a format for column YUV4:2:0
+ modes
+
+Some of the Broadcom codec blocks use a column based YUV4:2:0 image
+format, so add the documentation and defines for both 8 and 10 bit
+versions.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/v4l/pixfmt-nv12-col128.rst          | 215 ++++++++++++++++++
+ .../media/v4l/pixfmt-yuv-planar.rst           |  11 +
+ .../userspace-api/media/v4l/yuv-formats.rst   |  19 ++
+ drivers/media/v4l2-core/v4l2-ioctl.c          |   2 +
+ include/uapi/linux/videodev2.h                |   4 +
+ 5 files changed, 251 insertions(+)
+ create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-nv12-col128.rst
+
+--- /dev/null
++++ b/Documentation/userspace-api/media/v4l/pixfmt-nv12-col128.rst
+@@ -0,0 +1,215 @@
++.. Permission is granted to copy, distribute and/or modify this
++.. document under the terms of the GNU Free Documentation License,
++.. Version 1.1 or any later version published by the Free Software
++.. Foundation, with no Invariant Sections, no Front-Cover Texts
++.. and no Back-Cover Texts. A copy of the license is included at
++.. Documentation/media/uapi/fdl-appendix.rst.
++..
++.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
++
++.. _V4L2_PIX_FMT_NV12_COL128:
++.. _V4L2_PIX_FMT_NV12_10_COL128:
++
++********************************************************************************
++V4L2_PIX_FMT_NV12_COL128, V4L2_PIX_FMT_NV12_10_COL128
++********************************************************************************
++
++
++V4L2_PIX_FMT_NV21_COL128
++Formats with ½ horizontal and vertical chroma resolution. This format
++has two planes - one for luminance and one for chrominance. Chroma
++samples are interleaved. The difference to ``V4L2_PIX_FMT_NV12`` is the
++memory layout. The image is split into columns of 128 bytes wide rather than
++being in raster order.
++
++V4L2_PIX_FMT_NV12_10_COL128
++Follows the same pattern as ``V4L2_PIX_FMT_NV21_COL128`` with 128 byte, but is
++a 10bit format with 3 10-bit samples being packed into 4 bytes. Each 128 byte
++wide column therefore contains 96 samples.
++
++
++Description
++===========
++
++This is the two-plane versions of the YUV 4:2:0 format where data is
++grouped into 128 byte wide columns. The three components are separated into
++two sub-images or planes. The Y plane has one byte per pixel and pixels
++are grouped into 128 byte wide columns. The CbCr plane has the same width,
++in bytes, as the Y plane (and the image), but is half as tall in pixels.
++The chroma plane is also in 128 byte columns, reflecting 64 Cb and 64 Cr
++samples.
++
++The chroma samples for a column follow the luma samples. If there is any
++paddding, then that will be reflected via the selection API.
++The luma height must be a multiple of 2 lines.
++
++The normal bytesperline is effectively fixed at 128. However the format
++requires knowledge of the stride between columns, therefore the bytesperline
++value has been repurposed to denote the number of 128 byte long lines between
++the start of each column.
++
++**Byte Order.**
++
++
++.. flat-table::
++    :header-rows:  0
++    :stub-columns: 0
++    :widths: 12 12 12 12 12 4 12 12 12 12
++
++    * - start + 0:
++      - Y'\ :sub:`0,0`
++      - Y'\ :sub:`0,1`
++      - Y'\ :sub:`0,2`
++      - Y'\ :sub:`0,3`
++      - ...
++      - Y'\ :sub:`0,124`
++      - Y'\ :sub:`0,125`
++      - Y'\ :sub:`0,126`
++      - Y'\ :sub:`0,127`
++    * - start + 128:
++      - Y'\ :sub:`1,0`
++      - Y'\ :sub:`1,1`
++      - Y'\ :sub:`1,2`
++      - Y'\ :sub:`1,3`
++      - ...
++      - Y'\ :sub:`1,124`
++      - Y'\ :sub:`1,125`
++      - Y'\ :sub:`1,126`
++      - Y'\ :sub:`1,127`
++    * - start + 256:
++      - Y'\ :sub:`2,0`
++      - Y'\ :sub:`2,1`
++      - Y'\ :sub:`2,2`
++      - Y'\ :sub:`2,3`
++      - ...
++      - Y'\ :sub:`2,124`
++      - Y'\ :sub:`2,125`
++      - Y'\ :sub:`2,126`
++      - Y'\ :sub:`2,127`
++    * - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++    * - start + ((height-1) * 128):
++      - Y'\ :sub:`height-1,0`
++      - Y'\ :sub:`height-1,1`
++      - Y'\ :sub:`height-1,2`
++      - Y'\ :sub:`height-1,3`
++      - ...
++      - Y'\ :sub:`height-1,124`
++      - Y'\ :sub:`height-1,125`
++      - Y'\ :sub:`height-1,126`
++      - Y'\ :sub:`height-1,127`
++    * - start + ((height) * 128):
++      - Cb\ :sub:`0,0`
++      - Cr\ :sub:`0,0`
++      - Cb\ :sub:`0,1`
++      - Cr\ :sub:`0,1`
++      - ...
++      - Cb\ :sub:`0,62`
++      - Cr\ :sub:`0,62`
++      - Cb\ :sub:`0,63`
++      - Cr\ :sub:`0,63`
++    * - start + ((height+1) * 128):
++      - Cb\ :sub:`1,0`
++      - Cr\ :sub:`1,0`
++      - Cb\ :sub:`1,1`
++      - Cr\ :sub:`1,1`
++      - ...
++      - Cb\ :sub:`1,62`
++      - Cr\ :sub:`1,62`
++      - Cb\ :sub:`1,63`
++      - Cr\ :sub:`1,63`
++    * - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++    * - start + ((height+(height/2)-1) * 128):
++      - Cb\ :sub:`(height/2)-1,0`
++      - Cr\ :sub:`(height/2)-1,0`
++      - Cb\ :sub:`(height/2)-1,1`
++      - Cr\ :sub:`(height/2)-1,1`
++      - ...
++      - Cb\ :sub:`(height/2)-1,62`
++      - Cr\ :sub:`(height/2)-1,62`
++      - Cb\ :sub:`(height/2)-1,63`
++      - Cr\ :sub:`(height/2)-1,63`
++    * - start + (bytesperline * 128):
++      - Y'\ :sub:`0,128`
++      - Y'\ :sub:`0,129`
++      - Y'\ :sub:`0,130`
++      - Y'\ :sub:`0,131`
++      - ...
++      - Y'\ :sub:`0,252`
++      - Y'\ :sub:`0,253`
++      - Y'\ :sub:`0,254`
++      - Y'\ :sub:`0,255`
++    * - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++      - ...
++
++V4L2_PIX_FMT_NV12_10_COL128 uses the same 128 byte column structure, but
++encodes 10-bit YUV.
++3 10-bit values are packed into 4 bytes as bits 9:0, 19:10, and 29:20, with
++bits 30 & 31 unused. For the luma plane, bits 9:0 are Y0, 19:10 are Y1, and
++29:20 are Y2. For the chroma plane the samples always come in pairs of Cr
++and Cb, so it needs to be considered 6 values packed in 8 bytes.
++
++Bit-packed representation.
++
++.. raw:: latex
++
++    \small
++
++.. tabularcolumns:: |p{1.2cm}||p{1.2cm}||p{1.2cm}||p{1.2cm}|p{3.2cm}|p{3.2cm}|
++
++.. flat-table::
++    :header-rows:  0
++    :stub-columns: 0
++    :widths: 8 8 8 8
++
++    * - Y'\ :sub:`00[7:0]`
++      - Y'\ :sub:`01[5:0] (bits 7--2)` Y'\ :sub:`00[9:8]`\ (bits 1--0)
++      - Y'\ :sub:`02[3:0] (bits 7--4)` Y'\ :sub:`01[9:6]`\ (bits 3--0)
++      - unused (bits 7--6)` Y'\ :sub:`02[9:4]`\ (bits 5--0)
++
++.. raw:: latex
++
++    \small
++
++.. tabularcolumns:: |p{1.2cm}||p{1.2cm}||p{1.2cm}||p{1.2cm}|p{3.2cm}|p{3.2cm}|
++
++.. flat-table::
++    :header-rows:  0
++    :stub-columns: 0
++    :widths: 12 12 12 12 12 12 12 12
++
++    * - Cb\ :sub:`00[7:0]`
++      - Cr\ :sub:`00[5:0]`\ (bits 7--2) Cb\ :sub:`00[9:8]`\ (bits 1--0)
++      - Cb\ :sub:`01[3:0]`\ (bits 7--4) Cr\ :sub:`00[9:6]`\ (bits 3--0)
++      - unused (bits 7--6) Cb\ :sub:`02[9:4]`\ (bits 5--0)
++      - Cr\ :sub:`01[7:0]`
++      - Cb\ :sub:`02[5:0]`\ (bits 7--2) Cr\ :sub:`01[9:8]`\ (bits 1--0)
++      - Cr\ :sub:`02[3:0]`\ (bits 7--4) Cb\ :sub:`02[9:6]`\ (bits 3--0)
++      - unused (bits 7--6) Cr\ :sub:`02[9:4]`\ (bits 5--0)
++
++.. raw:: latex
++
++    \normalsize
++
++
++
++
+--- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
++++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
+@@ -470,6 +470,17 @@ number of lines as the luma plane.
+       - Cb\ :sub:`33`
+       - Cr\ :sub:`33`
+ 
++V4L2_PIX_FMT_NV12_COL128
++------------------------
++
++``V4L2_PIX_FMT_NV12_COL128`` is the tiled version of
++``V4L2_PIX_FMT_NV12`` with the image broken down into 128 pixel wide columns of
++Y followed by the associated combined CbCr plane.
++The normal bytesperline is effectively fixed at 128. However the format
++requires knowledge of the stride between columns, therefore the bytesperline
++value has been repurposed to denote the number of 128 byte long lines between
++the start of each column.
++
+ 
+ Fully Planar YUV Formats
+ ========================
+--- a/Documentation/userspace-api/media/v4l/yuv-formats.rst
++++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst
+@@ -270,4 +270,23 @@ image.
+     pixfmt-y8i
+     pixfmt-y12i
+     pixfmt-uv8
++    pixfmt-yuyv
++    pixfmt-uyvy
++    pixfmt-yvyu
++    pixfmt-vyuy
++    pixfmt-y41p
++    pixfmt-yuv420
++    pixfmt-yuv420m
++    pixfmt-yuv422m
++    pixfmt-yuv444m
++    pixfmt-yuv410
++    pixfmt-yuv422p
++    pixfmt-yuv411p
++    pixfmt-nv12
++    pixfmt-nv12m
++    pixfmt-nv12mt
++    pixfmt-nv12-col128
++    pixfmt-nv16
++    pixfmt-nv16m
++    pixfmt-nv24
+     pixfmt-m420
+--- a/drivers/media/v4l2-core/v4l2-ioctl.c
++++ b/drivers/media/v4l2-core/v4l2-ioctl.c
+@@ -1308,6 +1308,8 @@ static void v4l_fill_fmtdesc(struct v4l2
+ 	case V4L2_PIX_FMT_NV61M:	descr = "Y/CrCb 4:2:2 (N-C)"; break;
+ 	case V4L2_PIX_FMT_NV12MT:	descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
+ 	case V4L2_PIX_FMT_NV12MT_16X16:	descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
++	case V4L2_PIX_FMT_NV12_COL128:	descr = "Y/CbCr 4:2:0 (128b cols)"; break;
++	case V4L2_PIX_FMT_NV12_10_COL128: descr = "10-bit Y/CbCr 4:2:0 (128b cols)"; break;
+ 	case V4L2_PIX_FMT_YUV420M:	descr = "Planar YUV 4:2:0 (N-C)"; break;
+ 	case V4L2_PIX_FMT_YVU420M:	descr = "Planar YVU 4:2:0 (N-C)"; break;
+ 	case V4L2_PIX_FMT_YUV422M:	descr = "Planar YUV 4:2:2 (N-C)"; break;
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -742,6 +742,10 @@ struct v4l2_pix_format {
+ #define V4L2_PIX_FMT_SUNXI_TILED_NV12 v4l2_fourcc('S', 'T', '1', '2') /* Sunxi Tiled NV12 Format */
+ #define V4L2_PIX_FMT_CNF4     v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */
+ #define V4L2_PIX_FMT_HI240    v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */
++#define V4L2_PIX_FMT_NV12_COL128 v4l2_fourcc('N', 'C', '1', '2') /* 12  Y/CbCr 4:2:0 128 pixel wide column */
++#define V4L2_PIX_FMT_NV12_10_COL128 v4l2_fourcc('N', 'C', '3', '0')
++								/* Y/CbCr 4:2:0 10bpc, 3x10 packed as 4 bytes in
++								 * a 128 bytes / 96 pixel wide column */
+ 
+ /* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */
+ #define V4L2_PIX_FMT_IPU3_SBGGR10	v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0202-media-dt-bindings-media-Add-binding-for-the-Raspberr.patch b/target/linux/bcm27xx/patches-5.15/950-0202-media-dt-bindings-media-Add-binding-for-the-Raspberr.patch
new file mode 100644
index 0000000000..5e296be8bb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0202-media-dt-bindings-media-Add-binding-for-the-Raspberr.patch
@@ -0,0 +1,106 @@
+From 16aadd75412c2f4dc1251cb5267807d0253993b0 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 17 Mar 2020 10:53:16 +0000
+Subject: [PATCH] media: dt-bindings: media: Add binding for the
+ Raspberry PI HEVC decoder
+
+Adds a binding for the HEVC decoder found on the BCM2711 / Raspberry Pi 4.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bindings/media/rpivid_hevc.yaml           | 72 +++++++++++++++++++
+ MAINTAINERS                                   |  7 ++
+ 2 files changed, 79 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/rpivid_hevc.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/rpivid_hevc.yaml
+@@ -0,0 +1,72 @@
++# SPDX-License-Identifier: GPL-2.0-only
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/media/rpivid_hevc.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Raspberry Pi HEVC Decoder
++
++maintainers:
++  - Raspberry Pi <kernel-list@raspberrypi.com>
++
++description: |-
++  The Camera Adaptation Layer (CAL) is a key component for image capture
++  applications. The capture module provides the system interface and the
++  processing capability to connect CSI2 image-sensor modules to the
++  DRA72x device.
++
++properties:
++  compatible:
++    enum:
++      - raspberrypi,rpivid-vid-decoder
++
++  reg:
++    minItems: 2
++    items:
++      - description: The HEVC main register region
++      - description: The Interrupt controller register region
++
++  reg-names:
++    minItems: 2
++    items:
++      - const: hevc
++      - const: intc
++
++  interrupts:
++    maxItems: 1
++
++  clocks:
++    items:
++      - description: The HEVC block clock
++
++  clock-names:
++    items:
++      - const: hevc
++
++required:
++  - compatible
++  - reg
++  - reg-names
++  - interrupts
++  - clocks
++
++additionalProperties: false
++
++examples:
++  - |
++    #include <dt-bindings/interrupt-controller/arm-gic.h>
++
++    video-codec@7eb10000 {
++        compatible = "raspberrypi,rpivid-vid-decoder";
++        reg = <0x0 0x7eb10000 0x1000>,	/* INTC */
++              <0x0 0x7eb00000 0x10000>; /* HEVC */
++        reg-names = "intc",
++                    "hevc";
++
++        interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
++
++        clocks = <&clk 0>;
++        clock-names = "hevc";
++    };
++
++...
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3552,6 +3552,13 @@ N:	bcm113*
+ N:	bcm216*
+ N:	kona
+ 
++BROADCOM BCM2711 HEVC DECODER
++M:	Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
++L:	linux-media@vger.kernel.org
++S:	Maintained
++F:	Documentation/devicetree/bindings/media/rpivid_hevc.jaml
++F:	drivers/staging/media/rpivid
++
+ BROADCOM BCM2835 CAMERA DRIVER
+ M:	Dave Stevenson <dave.stevenson@raspberrypi.org>
+ L:	linux-media@vger.kernel.org
diff --git a/target/linux/bcm27xx/patches-5.15/950-0203-staging-media-Add-Raspberry-Pi-V4L2-H265-decoder.patch b/target/linux/bcm27xx/patches-5.15/950-0203-staging-media-Add-Raspberry-Pi-V4L2-H265-decoder.patch
new file mode 100644
index 0000000000..713443cfa0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0203-staging-media-Add-Raspberry-Pi-V4L2-H265-decoder.patch
@@ -0,0 +1,4341 @@
+From 53b7fe2fdb7ff96f0d29105c9621c93cfe754c9e Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 5 Mar 2020 18:30:41 +0000
+Subject: [PATCH] staging: media: Add Raspberry Pi V4L2 H265 decoder
+
+This driver is for the HEVC/H265 decoder block on the Raspberry
+Pi 4, and conforms to the V4L2 stateless decoder API.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/Kconfig               |    2 +
+ drivers/staging/media/Makefile              |    1 +
+ drivers/staging/media/rpivid/Kconfig        |   16 +
+ drivers/staging/media/rpivid/Makefile       |    5 +
+ drivers/staging/media/rpivid/rpivid.c       |  432 ++++
+ drivers/staging/media/rpivid/rpivid.h       |  181 ++
+ drivers/staging/media/rpivid/rpivid_dec.c   |   79 +
+ drivers/staging/media/rpivid/rpivid_dec.h   |   19 +
+ drivers/staging/media/rpivid/rpivid_h265.c  | 2275 +++++++++++++++++++
+ drivers/staging/media/rpivid/rpivid_hw.c    |  321 +++
+ drivers/staging/media/rpivid/rpivid_hw.h    |  300 +++
+ drivers/staging/media/rpivid/rpivid_video.c |  593 +++++
+ drivers/staging/media/rpivid/rpivid_video.h |   30 +
+ 13 files changed, 4254 insertions(+)
+ create mode 100644 drivers/staging/media/rpivid/Kconfig
+ create mode 100644 drivers/staging/media/rpivid/Makefile
+ create mode 100644 drivers/staging/media/rpivid/rpivid.c
+ create mode 100644 drivers/staging/media/rpivid/rpivid.h
+ create mode 100644 drivers/staging/media/rpivid/rpivid_dec.c
+ create mode 100644 drivers/staging/media/rpivid/rpivid_dec.h
+ create mode 100644 drivers/staging/media/rpivid/rpivid_h265.c
+ create mode 100644 drivers/staging/media/rpivid/rpivid_hw.c
+ create mode 100644 drivers/staging/media/rpivid/rpivid_hw.h
+ create mode 100644 drivers/staging/media/rpivid/rpivid_video.c
+ create mode 100644 drivers/staging/media/rpivid/rpivid_video.h
+
+--- a/drivers/staging/media/Kconfig
++++ b/drivers/staging/media/Kconfig
+@@ -32,6 +32,8 @@ source "drivers/staging/media/omap4iss/K
+ 
+ source "drivers/staging/media/rkvdec/Kconfig"
+ 
++source "drivers/staging/media/rpivid/Kconfig"
++
+ source "drivers/staging/media/sunxi/Kconfig"
+ 
+ source "drivers/staging/media/tegra-vde/Kconfig"
+--- a/drivers/staging/media/Makefile
++++ b/drivers/staging/media/Makefile
+@@ -4,6 +4,7 @@ obj-$(CONFIG_VIDEO_IMX_MEDIA)	+= imx/
+ obj-$(CONFIG_VIDEO_MESON_VDEC)	+= meson/vdec/
+ obj-$(CONFIG_VIDEO_OMAP4)	+= omap4iss/
+ obj-$(CONFIG_VIDEO_ROCKCHIP_VDEC)	+= rkvdec/
++obj-$(CONFIG_VIDEO_RPIVID)	+= rpivid/
+ obj-$(CONFIG_VIDEO_SUNXI)	+= sunxi/
+ obj-$(CONFIG_VIDEO_TEGRA)	+= tegra-video/
+ obj-$(CONFIG_TEGRA_VDE)		+= tegra-vde/
+--- /dev/null
++++ b/drivers/staging/media/rpivid/Kconfig
+@@ -0,0 +1,16 @@
++# SPDX-License-Identifier: GPL-2.0
++
++config VIDEO_RPIVID
++	tristate "Rpi H265 driver"
++	depends on VIDEO_DEV && VIDEO_V4L2
++	depends on MEDIA_CONTROLLER
++	depends on OF
++	depends on MEDIA_CONTROLLER_REQUEST_API
++	select VIDEOBUF2_DMA_CONTIG
++	select V4L2_MEM2MEM_DEV
++	help
++	  Support for the Rpi H265 h/w decoder.
++
++	  To compile this driver as a module, choose M here: the module
++	  will be called rpivid-hevc.
++
+--- /dev/null
++++ b/drivers/staging/media/rpivid/Makefile
+@@ -0,0 +1,5 @@
++# SPDX-License-Identifier: GPL-2.0
++obj-$(CONFIG_VIDEO_RPIVID) += rpivid-hevc.o
++
++rpivid-hevc-y = rpivid.o rpivid_video.o rpivid_dec.o \
++		 rpivid_hw.o rpivid_h265.o
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -0,0 +1,432 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#include <linux/platform_device.h>
++#include <linux/module.h>
++#include <linux/of.h>
++
++#include <media/v4l2-device.h>
++#include <media/v4l2-ioctl.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-mem2mem.h>
++
++#include "rpivid.h"
++#include "rpivid_video.h"
++#include "rpivid_hw.h"
++#include "rpivid_dec.h"
++
++/*
++ * Default /dev/videoN node number.
++ * Deliberately avoid the very low numbers as these are often taken by webcams
++ * etc, and simple apps tend to only go for /dev/video0.
++ */
++static int video_nr = 19;
++module_param(video_nr, int, 0644);
++MODULE_PARM_DESC(video_nr, "decoder video device number");
++
++static const struct rpivid_control rpivid_ctrls[] = {
++	{
++		.cfg = {
++			.id	= V4L2_CID_MPEG_VIDEO_HEVC_SPS,
++		},
++		.required	= true,
++	},
++	{
++		.cfg = {
++			.id	= V4L2_CID_MPEG_VIDEO_HEVC_PPS,
++		},
++		.required	= true,
++	},
++	{
++		.cfg = {
++			.id = V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX,
++		},
++		.required	= false,
++	},
++	{
++		.cfg = {
++			.id	= V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS,
++		},
++		.required	= true,
++	},
++	{
++		.cfg = {
++			.id	= V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE,
++			.max	= V4L2_MPEG_VIDEO_HEVC_DECODE_MODE_SLICE_BASED,
++			.def	= V4L2_MPEG_VIDEO_HEVC_DECODE_MODE_SLICE_BASED,
++		},
++		.required	= false,
++	},
++	{
++		.cfg = {
++			.id	= V4L2_CID_MPEG_VIDEO_HEVC_START_CODE,
++			.max	= V4L2_MPEG_VIDEO_HEVC_START_CODE_NONE,
++			.def	= V4L2_MPEG_VIDEO_HEVC_START_CODE_NONE,
++		},
++		.required	= false,
++	},
++};
++
++#define rpivid_ctrls_COUNT	ARRAY_SIZE(rpivid_ctrls)
++
++void *rpivid_find_control_data(struct rpivid_ctx *ctx, u32 id)
++{
++	unsigned int i;
++
++	for (i = 0; ctx->ctrls[i]; i++)
++		if (ctx->ctrls[i]->id == id)
++			return ctx->ctrls[i]->p_cur.p;
++
++	return NULL;
++}
++
++static int rpivid_init_ctrls(struct rpivid_dev *dev, struct rpivid_ctx *ctx)
++{
++	struct v4l2_ctrl_handler *hdl = &ctx->hdl;
++	struct v4l2_ctrl *ctrl;
++	unsigned int ctrl_size;
++	unsigned int i;
++
++	v4l2_ctrl_handler_init(hdl, rpivid_ctrls_COUNT);
++	if (hdl->error) {
++		v4l2_err(&dev->v4l2_dev,
++			 "Failed to initialize control handler\n");
++		return hdl->error;
++	}
++
++	ctrl_size = sizeof(ctrl) * rpivid_ctrls_COUNT + 1;
++
++	ctx->ctrls = kzalloc(ctrl_size, GFP_KERNEL);
++	if (!ctx->ctrls)
++		return -ENOMEM;
++
++	for (i = 0; i < rpivid_ctrls_COUNT; i++) {
++		ctrl = v4l2_ctrl_new_custom(hdl, &rpivid_ctrls[i].cfg,
++					    NULL);
++		if (hdl->error) {
++			v4l2_err(&dev->v4l2_dev,
++				 "Failed to create new custom control id=%#x\n",
++				 rpivid_ctrls[i].cfg.id);
++
++			v4l2_ctrl_handler_free(hdl);
++			kfree(ctx->ctrls);
++			return hdl->error;
++		}
++
++		ctx->ctrls[i] = ctrl;
++	}
++
++	ctx->fh.ctrl_handler = hdl;
++	v4l2_ctrl_handler_setup(hdl);
++
++	return 0;
++}
++
++static int rpivid_request_validate(struct media_request *req)
++{
++	struct media_request_object *obj;
++	struct v4l2_ctrl_handler *parent_hdl, *hdl;
++	struct rpivid_ctx *ctx = NULL;
++	struct v4l2_ctrl *ctrl_test;
++	unsigned int count;
++	unsigned int i;
++
++	list_for_each_entry(obj, &req->objects, list) {
++		struct vb2_buffer *vb;
++
++		if (vb2_request_object_is_buffer(obj)) {
++			vb = container_of(obj, struct vb2_buffer, req_obj);
++			ctx = vb2_get_drv_priv(vb->vb2_queue);
++
++			break;
++		}
++	}
++
++	if (!ctx)
++		return -ENOENT;
++
++	count = vb2_request_buffer_cnt(req);
++	if (!count) {
++		v4l2_info(&ctx->dev->v4l2_dev,
++			  "No buffer was provided with the request\n");
++		return -ENOENT;
++	} else if (count > 1) {
++		v4l2_info(&ctx->dev->v4l2_dev,
++			  "More than one buffer was provided with the request\n");
++		return -EINVAL;
++	}
++
++	parent_hdl = &ctx->hdl;
++
++	hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl);
++	if (!hdl) {
++		v4l2_info(&ctx->dev->v4l2_dev, "Missing codec control(s)\n");
++		return -ENOENT;
++	}
++
++	for (i = 0; i < rpivid_ctrls_COUNT; i++) {
++		if (!rpivid_ctrls[i].required)
++			continue;
++
++		ctrl_test =
++			v4l2_ctrl_request_hdl_ctrl_find(hdl,
++							rpivid_ctrls[i].cfg.id);
++		if (!ctrl_test) {
++			v4l2_info(&ctx->dev->v4l2_dev,
++				  "Missing required codec control\n");
++			return -ENOENT;
++		}
++	}
++
++	v4l2_ctrl_request_hdl_put(hdl);
++
++	return vb2_request_validate(req);
++}
++
++static int rpivid_open(struct file *file)
++{
++	struct rpivid_dev *dev = video_drvdata(file);
++	struct rpivid_ctx *ctx = NULL;
++	int ret;
++
++	if (mutex_lock_interruptible(&dev->dev_mutex))
++		return -ERESTARTSYS;
++
++	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
++	if (!ctx) {
++		mutex_unlock(&dev->dev_mutex);
++		return -ENOMEM;
++	}
++
++	v4l2_fh_init(&ctx->fh, video_devdata(file));
++	file->private_data = &ctx->fh;
++	ctx->dev = dev;
++
++	ret = rpivid_init_ctrls(dev, ctx);
++	if (ret)
++		goto err_free;
++
++	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
++					    &rpivid_queue_init);
++	if (IS_ERR(ctx->fh.m2m_ctx)) {
++		ret = PTR_ERR(ctx->fh.m2m_ctx);
++		goto err_ctrls;
++	}
++
++	/* The only bit of format info that we can guess now is H265 src
++	 * Everything else we need more info for
++	 */
++	ctx->src_fmt.pixelformat = RPIVID_SRC_PIXELFORMAT_DEFAULT;
++	rpivid_prepare_src_format(&ctx->src_fmt);
++
++	v4l2_fh_add(&ctx->fh);
++
++	mutex_unlock(&dev->dev_mutex);
++
++	return 0;
++
++err_ctrls:
++	v4l2_ctrl_handler_free(&ctx->hdl);
++err_free:
++	kfree(ctx);
++	mutex_unlock(&dev->dev_mutex);
++
++	return ret;
++}
++
++static int rpivid_release(struct file *file)
++{
++	struct rpivid_dev *dev = video_drvdata(file);
++	struct rpivid_ctx *ctx = container_of(file->private_data,
++					      struct rpivid_ctx, fh);
++
++	mutex_lock(&dev->dev_mutex);
++
++	v4l2_fh_del(&ctx->fh);
++	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
++
++	v4l2_ctrl_handler_free(&ctx->hdl);
++	kfree(ctx->ctrls);
++
++	v4l2_fh_exit(&ctx->fh);
++
++	kfree(ctx);
++
++	mutex_unlock(&dev->dev_mutex);
++
++	return 0;
++}
++
++static const struct v4l2_file_operations rpivid_fops = {
++	.owner		= THIS_MODULE,
++	.open		= rpivid_open,
++	.release	= rpivid_release,
++	.poll		= v4l2_m2m_fop_poll,
++	.unlocked_ioctl	= video_ioctl2,
++	.mmap		= v4l2_m2m_fop_mmap,
++};
++
++static const struct video_device rpivid_video_device = {
++	.name		= RPIVID_NAME,
++	.vfl_dir	= VFL_DIR_M2M,
++	.fops		= &rpivid_fops,
++	.ioctl_ops	= &rpivid_ioctl_ops,
++	.minor		= -1,
++	.release	= video_device_release_empty,
++	.device_caps	= V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
++};
++
++static const struct v4l2_m2m_ops rpivid_m2m_ops = {
++	.device_run	= rpivid_device_run,
++};
++
++static const struct media_device_ops rpivid_m2m_media_ops = {
++	.req_validate	= rpivid_request_validate,
++	.req_queue	= v4l2_m2m_request_queue,
++};
++
++static int rpivid_probe(struct platform_device *pdev)
++{
++	struct rpivid_dev *dev;
++	struct video_device *vfd;
++	int ret;
++
++	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
++	if (!dev)
++		return -ENOMEM;
++
++	dev->vfd = rpivid_video_device;
++	dev->dev = &pdev->dev;
++	dev->pdev = pdev;
++
++	ret = 0;
++	ret = rpivid_hw_probe(dev);
++	if (ret) {
++		dev_err(&pdev->dev, "Failed to probe hardware\n");
++		return ret;
++	}
++
++	dev->dec_ops = &rpivid_dec_ops_h265;
++
++	mutex_init(&dev->dev_mutex);
++
++	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
++	if (ret) {
++		dev_err(&pdev->dev, "Failed to register V4L2 device\n");
++		return ret;
++	}
++
++	vfd = &dev->vfd;
++	vfd->lock = &dev->dev_mutex;
++	vfd->v4l2_dev = &dev->v4l2_dev;
++
++	snprintf(vfd->name, sizeof(vfd->name), "%s", rpivid_video_device.name);
++	video_set_drvdata(vfd, dev);
++
++	dev->m2m_dev = v4l2_m2m_init(&rpivid_m2m_ops);
++	if (IS_ERR(dev->m2m_dev)) {
++		v4l2_err(&dev->v4l2_dev,
++			 "Failed to initialize V4L2 M2M device\n");
++		ret = PTR_ERR(dev->m2m_dev);
++
++		goto err_v4l2;
++	}
++
++	dev->mdev.dev = &pdev->dev;
++	strscpy(dev->mdev.model, RPIVID_NAME, sizeof(dev->mdev.model));
++	strscpy(dev->mdev.bus_info, "platform:" RPIVID_NAME,
++		sizeof(dev->mdev.bus_info));
++
++	media_device_init(&dev->mdev);
++	dev->mdev.ops = &rpivid_m2m_media_ops;
++	dev->v4l2_dev.mdev = &dev->mdev;
++
++	ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
++		goto err_m2m;
++	}
++
++	v4l2_info(&dev->v4l2_dev,
++		  "Device registered as /dev/video%d\n", vfd->num);
++
++	ret = v4l2_m2m_register_media_controller(dev->m2m_dev, vfd,
++						 MEDIA_ENT_F_PROC_VIDEO_DECODER);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev,
++			 "Failed to initialize V4L2 M2M media controller\n");
++		goto err_video;
++	}
++
++	ret = media_device_register(&dev->mdev);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev, "Failed to register media device\n");
++		goto err_m2m_mc;
++	}
++
++	platform_set_drvdata(pdev, dev);
++
++	return 0;
++
++err_m2m_mc:
++	v4l2_m2m_unregister_media_controller(dev->m2m_dev);
++err_video:
++	video_unregister_device(&dev->vfd);
++err_m2m:
++	v4l2_m2m_release(dev->m2m_dev);
++err_v4l2:
++	v4l2_device_unregister(&dev->v4l2_dev);
++
++	return ret;
++}
++
++static int rpivid_remove(struct platform_device *pdev)
++{
++	struct rpivid_dev *dev = platform_get_drvdata(pdev);
++
++	if (media_devnode_is_registered(dev->mdev.devnode)) {
++		media_device_unregister(&dev->mdev);
++		v4l2_m2m_unregister_media_controller(dev->m2m_dev);
++		media_device_cleanup(&dev->mdev);
++	}
++
++	v4l2_m2m_release(dev->m2m_dev);
++	video_unregister_device(&dev->vfd);
++	v4l2_device_unregister(&dev->v4l2_dev);
++
++	rpivid_hw_remove(dev);
++
++	return 0;
++}
++
++static const struct of_device_id rpivid_dt_match[] = {
++	{
++		.compatible = "raspberrypi,rpivid-vid-decoder",
++	},
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, rpivid_dt_match);
++
++static struct platform_driver rpivid_driver = {
++	.probe		= rpivid_probe,
++	.remove		= rpivid_remove,
++	.driver		= {
++		.name = RPIVID_NAME,
++		.of_match_table	= of_match_ptr(rpivid_dt_match),
++	},
++};
++module_platform_driver(rpivid_driver);
++
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("John Cox <jc@kynesim.co.uk>");
++MODULE_DESCRIPTION("Raspberry Pi HEVC V4L2 driver");
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -0,0 +1,181 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#ifndef _RPIVID_H_
++#define _RPIVID_H_
++
++#include <linux/clk.h>
++#include <linux/platform_device.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-mem2mem.h>
++#include <media/videobuf2-v4l2.h>
++#include <media/videobuf2-dma-contig.h>
++
++#define OPT_DEBUG_POLL_IRQ  0
++
++#define RPIVID_NAME			"rpivid"
++
++#define RPIVID_CAPABILITY_UNTILED	BIT(0)
++#define RPIVID_CAPABILITY_H265_DEC	BIT(1)
++
++#define RPIVID_QUIRK_NO_DMA_OFFSET	BIT(0)
++
++#define RPIVID_SRC_PIXELFORMAT_DEFAULT	V4L2_PIX_FMT_HEVC_SLICE
++
++enum rpivid_irq_status {
++	RPIVID_IRQ_NONE,
++	RPIVID_IRQ_ERROR,
++	RPIVID_IRQ_OK,
++};
++
++struct rpivid_control {
++	struct v4l2_ctrl_config cfg;
++	unsigned char		required:1;
++};
++
++struct rpivid_h265_run {
++	const struct v4l2_ctrl_hevc_sps			*sps;
++	const struct v4l2_ctrl_hevc_pps			*pps;
++	const struct v4l2_ctrl_hevc_slice_params	*slice_params;
++	const struct v4l2_ctrl_hevc_scaling_matrix	*scaling_matrix;
++};
++
++struct rpivid_run {
++	struct vb2_v4l2_buffer	*src;
++	struct vb2_v4l2_buffer	*dst;
++
++	struct rpivid_h265_run	h265;
++};
++
++struct rpivid_buffer {
++	struct v4l2_m2m_buffer          m2m_buf;
++};
++
++struct rpivid_dec_state;
++struct rpivid_dec_env;
++#define RPIVID_DEC_ENV_COUNT 3
++
++struct rpivid_gptr {
++	size_t size;
++	__u8 *ptr;
++	dma_addr_t addr;
++	unsigned long attrs;
++};
++
++struct rpivid_dev;
++typedef void (*rpivid_irq_callback)(struct rpivid_dev *dev, void *ctx);
++
++struct rpivid_q_aux;
++#define RPIVID_AUX_ENT_COUNT VB2_MAX_FRAME
++
++#define RPIVID_P2BUF_COUNT 2
++
++struct rpivid_ctx {
++	struct v4l2_fh			fh;
++	struct rpivid_dev		*dev;
++
++	struct v4l2_pix_format		src_fmt;
++	struct v4l2_pix_format		dst_fmt;
++	int dst_fmt_set;
++
++	struct v4l2_ctrl_handler	hdl;
++	struct v4l2_ctrl		**ctrls;
++
++	/* Decode state - stateless decoder my *** */
++	/* state contains stuff that is only needed in phase0
++	 * it could be held in dec_env but that would be wasteful
++	 */
++	struct rpivid_dec_state *state;
++	struct rpivid_dec_env *dec0;
++
++	/* Spinlock protecting dec_free */
++	spinlock_t dec_lock;
++	struct rpivid_dec_env *dec_free;
++
++	struct rpivid_dec_env *dec_pool;
++
++	/* Some of these should be in dev */
++	struct rpivid_gptr bitbufs[1];  /* Will be 2 */
++	struct rpivid_gptr cmdbufs[1];  /* Will be 2 */
++	unsigned int p2idx;
++	atomic_t p2out;
++	struct rpivid_gptr pu_bufs[RPIVID_P2BUF_COUNT];
++	struct rpivid_gptr coeff_bufs[RPIVID_P2BUF_COUNT];
++
++	/* Spinlock protecting aux_free */
++	spinlock_t aux_lock;
++	struct rpivid_q_aux *aux_free;
++
++	struct rpivid_q_aux *aux_ents[RPIVID_AUX_ENT_COUNT];
++
++	unsigned int colmv_stride;
++	unsigned int colmv_picsize;
++};
++
++struct rpivid_dec_ops {
++	void (*setup)(struct rpivid_ctx *ctx, struct rpivid_run *run);
++	int (*start)(struct rpivid_ctx *ctx);
++	void (*stop)(struct rpivid_ctx *ctx);
++	void (*trigger)(struct rpivid_ctx *ctx);
++};
++
++struct rpivid_variant {
++	unsigned int	capabilities;
++	unsigned int	quirks;
++	unsigned int	mod_rate;
++};
++
++struct rpivid_hw_irq_ent;
++
++struct rpivid_hw_irq_ctrl {
++	/* Spinlock protecting claim and tail */
++	spinlock_t lock;
++	struct rpivid_hw_irq_ent *claim;
++	struct rpivid_hw_irq_ent *tail;
++
++	/* Ent for pending irq - also prevents sched */
++	struct rpivid_hw_irq_ent *irq;
++	/* Non-zero => do not start a new job - outer layer sched pending */
++	int no_sched;
++	/* Thread CB requested */
++	bool thread_reqed;
++};
++
++struct rpivid_dev {
++	struct v4l2_device	v4l2_dev;
++	struct video_device	vfd;
++	struct media_device	mdev;
++	struct media_pad	pad[2];
++	struct platform_device	*pdev;
++	struct device		*dev;
++	struct v4l2_m2m_dev	*m2m_dev;
++	struct rpivid_dec_ops	*dec_ops;
++
++	/* Device file mutex */
++	struct mutex		dev_mutex;
++
++	void __iomem		*base_irq;
++	void __iomem		*base_h265;
++
++	struct clk		*clock;
++
++	struct rpivid_hw_irq_ctrl ic_active1;
++	struct rpivid_hw_irq_ctrl ic_active2;
++};
++
++extern struct rpivid_dec_ops rpivid_dec_ops_h265;
++
++void *rpivid_find_control_data(struct rpivid_ctx *ctx, u32 id);
++
++#endif
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid_dec.c
+@@ -0,0 +1,79 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#include <media/v4l2-device.h>
++#include <media/v4l2-ioctl.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-mem2mem.h>
++
++#include "rpivid.h"
++#include "rpivid_dec.h"
++
++void rpivid_device_run(void *priv)
++{
++	struct rpivid_ctx *ctx = priv;
++	struct rpivid_dev *dev = ctx->dev;
++	struct rpivid_run run = {};
++	struct media_request *src_req;
++
++	run.src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
++	run.dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
++
++	if (!run.src || !run.dst) {
++		v4l2_err(&dev->v4l2_dev, "%s: Missing buffer: src=%p, dst=%p\n",
++			 __func__, run.src, run.dst);
++		/* We are stuffed - this probably won't dig us out of our
++		 * current situation but it is better than nothing
++		 */
++		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++						 VB2_BUF_STATE_ERROR);
++		return;
++	}
++
++	/* Apply request(s) controls if needed. */
++	src_req = run.src->vb2_buf.req_obj.req;
++
++	if (src_req)
++		v4l2_ctrl_request_setup(src_req, &ctx->hdl);
++
++	switch (ctx->src_fmt.pixelformat) {
++	case V4L2_PIX_FMT_HEVC_SLICE:
++		run.h265.sps =
++			rpivid_find_control_data(ctx,
++						 V4L2_CID_MPEG_VIDEO_HEVC_SPS);
++		run.h265.pps =
++			rpivid_find_control_data(ctx,
++						 V4L2_CID_MPEG_VIDEO_HEVC_PPS);
++		run.h265.slice_params =
++			rpivid_find_control_data(ctx,
++						 V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS);
++		run.h265.scaling_matrix =
++			rpivid_find_control_data(ctx,
++						 V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX);
++		break;
++
++	default:
++		break;
++	}
++
++	v4l2_m2m_buf_copy_metadata(run.src, run.dst, true);
++
++	dev->dec_ops->setup(ctx, &run);
++
++	/* Complete request(s) controls if needed. */
++
++	if (src_req)
++		v4l2_ctrl_request_complete(src_req, &ctx->hdl);
++
++	dev->dec_ops->trigger(ctx);
++}
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid_dec.h
+@@ -0,0 +1,19 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#ifndef _RPIVID_DEC_H_
++#define _RPIVID_DEC_H_
++
++void rpivid_device_run(void *priv);
++
++#endif
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -0,0 +1,2275 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#include <linux/delay.h>
++#include <linux/types.h>
++
++#include <media/videobuf2-dma-contig.h>
++
++#include "rpivid.h"
++#include "rpivid_hw.h"
++
++#define DEBUG_TRACE_P1_CMD 0
++#define DEBUG_TRACE_EXECUTION 0
++
++#if DEBUG_TRACE_EXECUTION
++#define xtrace_in(dev_, de_)\
++	v4l2_info(&(dev_)->v4l2_dev, "%s[%d]: in\n",   __func__,\
++		  (de_) == NULL ? -1 : (de_)->decode_order)
++#define xtrace_ok(dev_, de_)\
++	v4l2_info(&(dev_)->v4l2_dev, "%s[%d]: ok\n",   __func__,\
++		  (de_) == NULL ? -1 : (de_)->decode_order)
++#define xtrace_fin(dev_, de_)\
++	v4l2_info(&(dev_)->v4l2_dev, "%s[%d]: finish\n", __func__,\
++		  (de_) == NULL ? -1 : (de_)->decode_order)
++#define xtrace_fail(dev_, de_)\
++	v4l2_info(&(dev_)->v4l2_dev, "%s[%d]: FAIL\n", __func__,\
++		  (de_) == NULL ? -1 : (de_)->decode_order)
++#else
++#define xtrace_in(dev_, de_)
++#define xtrace_ok(dev_, de_)
++#define xtrace_fin(dev_, de_)
++#define xtrace_fail(dev_, de_)
++#endif
++
++enum hevc_slice_type {
++	HEVC_SLICE_B = 0,
++	HEVC_SLICE_P = 1,
++	HEVC_SLICE_I = 2,
++};
++
++enum hevc_layer { L0 = 0, L1 = 1 };
++
++static int gptr_alloc(struct rpivid_dev *const dev, struct rpivid_gptr *gptr,
++		      size_t size, unsigned long attrs)
++{
++	gptr->size = size;
++	gptr->attrs = attrs;
++	gptr->addr = 0;
++	gptr->ptr = dma_alloc_attrs(dev->dev, gptr->size, &gptr->addr,
++				    GFP_KERNEL, gptr->attrs);
++	return !gptr->ptr ? -ENOMEM : 0;
++}
++
++static void gptr_free(struct rpivid_dev *const dev,
++		      struct rpivid_gptr *const gptr)
++{
++	if (gptr->ptr)
++		dma_free_attrs(dev->dev, gptr->size, gptr->ptr, gptr->addr,
++			       gptr->attrs);
++	gptr->size = 0;
++	gptr->ptr = NULL;
++	gptr->addr = 0;
++	gptr->attrs = 0;
++}
++
++/* Realloc but do not copy */
++static int gptr_realloc_new(struct rpivid_dev * const dev,
++			    struct rpivid_gptr * const gptr, size_t size)
++{
++	if (size == gptr->size)
++		return 0;
++
++	if (gptr->ptr)
++		dma_free_attrs(dev->dev, gptr->size, gptr->ptr,
++			       gptr->addr, gptr->attrs);
++
++	gptr->addr = 0;
++	gptr->size = size;
++	gptr->ptr = dma_alloc_attrs(dev->dev, gptr->size,
++				    &gptr->addr, GFP_KERNEL, gptr->attrs);
++	return gptr->ptr ? 0 : -ENOMEM;
++}
++
++/* floor(log2(x)) */
++static unsigned int log2_size(size_t x)
++{
++	unsigned int n = 0;
++
++	if (x & ~0xffff) {
++		n += 16;
++		x >>= 16;
++	}
++	if (x & ~0xff) {
++		n += 8;
++		x >>= 8;
++	}
++	if (x & ~0xf) {
++		n += 4;
++		x >>= 4;
++	}
++	if (x & ~3) {
++		n += 2;
++		x >>= 2;
++	}
++	return (x & ~1) ? n + 1 : n;
++}
++
++static size_t round_up_size(const size_t x)
++{
++	/* Admit no size < 256 */
++	const unsigned int n = x < 256 ? 8 : log2_size(x) - 1;
++
++	return x >= (3 << n) ? 4 << n : (3 << n);
++}
++
++static size_t next_size(const size_t x)
++{
++	return round_up_size(x + 1);
++}
++
++#define NUM_SCALING_FACTORS 4064 /* Not a typo = 0xbe0 + 0x400 */
++
++#define AXI_BASE64 0
++
++#define PROB_BACKUP ((20 << 12) + (20 << 6) + (0 << 0))
++#define PROB_RELOAD ((20 << 12) + (20 << 0) + (0 << 6))
++
++#define HEVC_MAX_REFS V4L2_HEVC_DPB_ENTRIES_NUM_MAX
++
++//////////////////////////////////////////////////////////////////////////////
++
++struct rpi_cmd {
++	u32 addr;
++	u32 data;
++} __packed;
++
++struct rpivid_q_aux {
++	unsigned int refcount;
++	unsigned int q_index;
++	struct rpivid_q_aux *next;
++	struct rpivid_gptr col;
++};
++
++//////////////////////////////////////////////////////////////////////////////
++
++enum rpivid_decode_state {
++	RPIVID_DECODE_SLICE_START,
++	RPIVID_DECODE_SLICE_CONTINUE,
++	RPIVID_DECODE_ERROR_CONTINUE,
++	RPIVID_DECODE_ERROR_DONE,
++	RPIVID_DECODE_PHASE1,
++	RPIVID_DECODE_END,
++};
++
++struct rpivid_dec_env {
++	struct rpivid_ctx *ctx;
++	struct rpivid_dec_env *next;
++
++	enum rpivid_decode_state state;
++	unsigned int decode_order;
++	int p1_status;		/* P1 status - what to realloc */
++
++	struct rpivid_dec_env *phase_wait_q_next;
++
++	struct rpi_cmd *cmd_fifo;
++	unsigned int cmd_len, cmd_max;
++	unsigned int num_slice_msgs;
++	unsigned int pic_width_in_ctbs_y;
++	unsigned int pic_height_in_ctbs_y;
++	unsigned int dpbno_col;
++	u32 reg_slicestart;
++	int collocated_from_l0_flag;
++	unsigned int wpp_entry_x;
++	unsigned int wpp_entry_y;
++
++	u32 rpi_config2;
++	u32 rpi_framesize;
++	u32 rpi_currpoc;
++
++	struct vb2_v4l2_buffer *frame_buf; // Detached dest buffer
++	unsigned int frame_c_offset;
++	unsigned int frame_stride;
++	dma_addr_t frame_addr;
++	dma_addr_t ref_addrs[16];
++	struct rpivid_q_aux *frame_aux;
++	struct rpivid_q_aux *col_aux;
++
++	dma_addr_t pu_base_vc;
++	dma_addr_t coeff_base_vc;
++	u32 pu_stride;
++	u32 coeff_stride;
++
++	struct rpivid_gptr *bit_copy_gptr;
++	size_t bit_copy_len;
++	struct rpivid_gptr *cmd_copy_gptr;
++
++	u16 slice_msgs[2 * HEVC_MAX_REFS * 8 + 3];
++	u8 scaling_factors[NUM_SCALING_FACTORS];
++
++	struct rpivid_hw_irq_ent irq_ent;
++};
++
++#define member_size(type, member) sizeof(((type *)0)->member)
++
++struct rpivid_dec_state {
++	struct v4l2_ctrl_hevc_sps sps;
++	struct v4l2_ctrl_hevc_pps pps;
++
++	// Helper vars & tables derived from sps/pps
++	unsigned int log2_ctb_size; /* log2 width of a CTB */
++	unsigned int ctb_width; /* Width in CTBs */
++	unsigned int ctb_height; /* Height in CTBs */
++	unsigned int ctb_size; /* Pic area in CTBs */
++	unsigned int num_tile_columns;
++	unsigned int num_tile_rows;
++	u8 column_width[member_size(struct v4l2_ctrl_hevc_pps,
++				    column_width_minus1)];
++	u8 row_height[member_size(struct v4l2_ctrl_hevc_pps,
++				  row_height_minus1)];
++
++	int *col_bd;
++	int *row_bd;
++	int *ctb_addr_rs_to_ts;
++	int *ctb_addr_ts_to_rs;
++	int *tile_id;
++
++	// Aux starage for DPB
++	// Hold refs
++	struct rpivid_q_aux *ref_aux[HEVC_MAX_REFS];
++	struct rpivid_q_aux *frame_aux;
++
++	// Slice vars
++	unsigned int slice_idx;
++	bool frame_end;
++	bool slice_temporal_mvp;  /* Slice flag but constant for frame */
++
++	// Temp vars per run - don't actually need to persist
++	u8 *src_buf;
++	dma_addr_t src_addr;
++	const struct v4l2_ctrl_hevc_slice_params *sh;
++	unsigned int nb_refs[2];
++	unsigned int slice_qp;
++	unsigned int max_num_merge_cand; // 0 if I-slice
++	bool dependent_slice_segment_flag;
++};
++
++static inline int clip_int(const int x, const int lo, const int hi)
++{
++	return x < lo ? lo : x > hi ? hi : x;
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Phase 1 command and bit FIFOs
++
++#if DEBUG_TRACE_P1_CMD
++static int p1_z;
++#endif
++
++// ???? u16 addr - put in u32
++static int p1_apb_write(struct rpivid_dec_env *const de, const u16 addr,
++			const u32 data)
++{
++	if (de->cmd_len == de->cmd_max)
++		de->cmd_fifo =
++			krealloc(de->cmd_fifo,
++				 (de->cmd_max *= 2) * sizeof(struct rpi_cmd),
++				 GFP_KERNEL);
++	de->cmd_fifo[de->cmd_len].addr = addr;
++	de->cmd_fifo[de->cmd_len].data = data;
++
++#if DEBUG_TRACE_P1_CMD
++	if (++p1_z < 256) {
++		v4l2_info(&de->ctx->dev->v4l2_dev, "[%02x] %x %x\n",
++			  de->cmd_len, addr, data);
++	}
++#endif
++
++	return de->cmd_len++;
++}
++
++static int ctb_to_tile(unsigned int ctb, unsigned int *bd, int num)
++{
++	int i;
++
++	for (i = 1; ctb >= bd[i]; i++)
++		; // bd[] has num+1 elements; bd[0]=0;
++	return i - 1;
++}
++
++static int ctb_to_slice_w_h(unsigned int ctb, int ctb_size, int width,
++			    unsigned int *bd, int num)
++{
++	if (ctb < bd[num - 1])
++		return ctb_size;
++	else if (width % ctb_size)
++		return width % ctb_size;
++	else
++		return ctb_size;
++}
++
++static void aux_q_free(struct rpivid_ctx *const ctx,
++		       struct rpivid_q_aux *const aq)
++{
++	struct rpivid_dev *const dev = ctx->dev;
++
++	gptr_free(dev, &aq->col);
++	kfree(aq);
++}
++
++static struct rpivid_q_aux *aux_q_alloc(struct rpivid_ctx *const ctx)
++{
++	struct rpivid_dev *const dev = ctx->dev;
++	struct rpivid_q_aux *const aq = kzalloc(sizeof(*aq), GFP_KERNEL);
++
++	if (!aq)
++		return NULL;
++
++	aq->refcount = 1;
++	if (gptr_alloc(dev, &aq->col, ctx->colmv_picsize,
++		       DMA_ATTR_FORCE_CONTIGUOUS | DMA_ATTR_NO_KERNEL_MAPPING))
++		goto fail;
++
++	return aq;
++
++fail:
++	kfree(aq);
++	return NULL;
++}
++
++static struct rpivid_q_aux *aux_q_new(struct rpivid_ctx *const ctx,
++				      const unsigned int q_index)
++{
++	struct rpivid_q_aux *aq;
++	unsigned long lockflags;
++
++	spin_lock_irqsave(&ctx->aux_lock, lockflags);
++	aq = ctx->aux_free;
++	if (aq) {
++		ctx->aux_free = aq->next;
++		aq->next = NULL;
++		aq->refcount = 1;
++	}
++	spin_unlock_irqrestore(&ctx->aux_lock, lockflags);
++
++	if (!aq) {
++		aq = aux_q_alloc(ctx);
++		if (!aq)
++			return NULL;
++	}
++
++	aq->q_index = q_index;
++	ctx->aux_ents[q_index] = aq;
++	return aq;
++}
++
++static struct rpivid_q_aux *aux_q_ref(struct rpivid_ctx *const ctx,
++				      struct rpivid_q_aux *const aq)
++{
++	if (aq) {
++		unsigned long lockflags;
++
++		spin_lock_irqsave(&ctx->aux_lock, lockflags);
++
++		++aq->refcount;
++
++		spin_unlock_irqrestore(&ctx->aux_lock, lockflags);
++	}
++	return aq;
++}
++
++static void aux_q_release(struct rpivid_ctx *const ctx,
++			  struct rpivid_q_aux **const paq)
++{
++	struct rpivid_q_aux *const aq = *paq;
++	*paq = NULL;
++
++	if (aq) {
++		unsigned long lockflags;
++
++		spin_lock_irqsave(&ctx->aux_lock, lockflags);
++
++		if (--aq->refcount == 0) {
++			aq->next = ctx->aux_free;
++			ctx->aux_free = aq;
++			ctx->aux_ents[aq->q_index] = NULL;
++		}
++
++		spin_unlock_irqrestore(&ctx->aux_lock, lockflags);
++	}
++}
++
++static void aux_q_init(struct rpivid_ctx *const ctx)
++{
++	spin_lock_init(&ctx->aux_lock);
++	ctx->aux_free = NULL;
++}
++
++static void aux_q_uninit(struct rpivid_ctx *const ctx)
++{
++	struct rpivid_q_aux *aq;
++
++	ctx->colmv_picsize = 0;
++	ctx->colmv_stride = 0;
++	while ((aq = ctx->aux_free) != NULL) {
++		ctx->aux_free = aq->next;
++		aux_q_free(ctx, aq);
++	}
++}
++
++//////////////////////////////////////////////////////////////////////////////
++
++/*
++ * Initialisation process for context variables (CABAC init)
++ * see H.265 9.3.2.2
++ *
++ * N.B. If comparing with FFmpeg note that this h/w uses slightly different
++ * offsets to FFmpegs array
++ */
++
++/* Actual number of values */
++#define RPI_PROB_VALS 154U
++/* Rounded up as we copy words */
++#define RPI_PROB_ARRAY_SIZE ((154 + 3) & ~3)
++
++/* Initialiser values - see tables H.265 9-4 through 9-42 */
++static const u8 prob_init[3][156] = {
++	{
++		153, 200, 139, 141, 157, 154, 154, 154, 154, 154, 184, 154, 154,
++		154, 184, 63,  154, 154, 154, 154, 154, 154, 154, 154, 154, 154,
++		154, 154, 154, 153, 138, 138, 111, 141, 94,  138, 182, 154, 154,
++		154, 140, 92,  137, 138, 140, 152, 138, 139, 153, 74,  149, 92,
++		139, 107, 122, 152, 140, 179, 166, 182, 140, 227, 122, 197, 110,
++		110, 124, 125, 140, 153, 125, 127, 140, 109, 111, 143, 127, 111,
++		79,  108, 123, 63,  110, 110, 124, 125, 140, 153, 125, 127, 140,
++		109, 111, 143, 127, 111, 79,  108, 123, 63,  91,  171, 134, 141,
++		138, 153, 136, 167, 152, 152, 139, 139, 111, 111, 125, 110, 110,
++		94,  124, 108, 124, 107, 125, 141, 179, 153, 125, 107, 125, 141,
++		179, 153, 125, 107, 125, 141, 179, 153, 125, 140, 139, 182, 182,
++		152, 136, 152, 136, 153, 136, 139, 111, 136, 139, 111, 0,   0,
++	},
++	{
++		153, 185, 107, 139, 126, 197, 185, 201, 154, 149, 154, 139, 154,
++		154, 154, 152, 110, 122, 95,  79,  63,  31,  31,  153, 153, 168,
++		140, 198, 79,  124, 138, 94,  153, 111, 149, 107, 167, 154, 154,
++		154, 154, 196, 196, 167, 154, 152, 167, 182, 182, 134, 149, 136,
++		153, 121, 136, 137, 169, 194, 166, 167, 154, 167, 137, 182, 125,
++		110, 94,  110, 95,  79,  125, 111, 110, 78,  110, 111, 111, 95,
++		94,  108, 123, 108, 125, 110, 94,  110, 95,  79,  125, 111, 110,
++		78,  110, 111, 111, 95,  94,  108, 123, 108, 121, 140, 61,  154,
++		107, 167, 91,  122, 107, 167, 139, 139, 155, 154, 139, 153, 139,
++		123, 123, 63,  153, 166, 183, 140, 136, 153, 154, 166, 183, 140,
++		136, 153, 154, 166, 183, 140, 136, 153, 154, 170, 153, 123, 123,
++		107, 121, 107, 121, 167, 151, 183, 140, 151, 183, 140, 0,   0,
++	},
++	{
++		153, 160, 107, 139, 126, 197, 185, 201, 154, 134, 154, 139, 154,
++		154, 183, 152, 154, 137, 95,  79,  63,  31,  31,  153, 153, 168,
++		169, 198, 79,  224, 167, 122, 153, 111, 149, 92,  167, 154, 154,
++		154, 154, 196, 167, 167, 154, 152, 167, 182, 182, 134, 149, 136,
++		153, 121, 136, 122, 169, 208, 166, 167, 154, 152, 167, 182, 125,
++		110, 124, 110, 95,  94,  125, 111, 111, 79,  125, 126, 111, 111,
++		79,  108, 123, 93,  125, 110, 124, 110, 95,  94,  125, 111, 111,
++		79,  125, 126, 111, 111, 79,  108, 123, 93,  121, 140, 61,  154,
++		107, 167, 91,  107, 107, 167, 139, 139, 170, 154, 139, 153, 139,
++		123, 123, 63,  124, 166, 183, 140, 136, 153, 154, 166, 183, 140,
++		136, 153, 154, 166, 183, 140, 136, 153, 154, 170, 153, 138, 138,
++		122, 121, 122, 121, 167, 151, 183, 140, 151, 183, 140, 0,   0,
++	},
++};
++
++static void write_prob(struct rpivid_dec_env *const de,
++		       const struct rpivid_dec_state *const s)
++{
++	u8 dst[RPI_PROB_ARRAY_SIZE];
++
++	const unsigned int init_type =
++		((s->sh->flags & V4L2_HEVC_SLICE_PARAMS_FLAG_CABAC_INIT) != 0 &&
++		 s->sh->slice_type != HEVC_SLICE_I) ?
++			s->sh->slice_type + 1 :
++			2 - s->sh->slice_type;
++	const u8 *p = prob_init[init_type];
++	const int q = clip_int(s->slice_qp, 0, 51);
++	unsigned int i;
++
++	for (i = 0; i < RPI_PROB_VALS; i++) {
++		int init_value = p[i];
++		int m = (init_value >> 4) * 5 - 45;
++		int n = ((init_value & 15) << 3) - 16;
++		int pre = 2 * (((m * q) >> 4) + n) - 127;
++
++		pre ^= pre >> 31;
++		if (pre > 124)
++			pre = 124 + (pre & 1);
++		dst[i] = pre;
++	}
++	for (i = RPI_PROB_VALS; i != RPI_PROB_ARRAY_SIZE; ++i)
++		dst[i] = 0;
++
++	for (i = 0; i < RPI_PROB_ARRAY_SIZE; i += 4)
++		p1_apb_write(de, 0x1000 + i,
++			     dst[i] + (dst[i + 1] << 8) + (dst[i + 2] << 16) +
++				     (dst[i + 3] << 24));
++}
++
++static void write_scaling_factors(struct rpivid_dec_env *const de)
++{
++	int i;
++	const u8 *p = (u8 *)de->scaling_factors;
++
++	for (i = 0; i < NUM_SCALING_FACTORS; i += 4, p += 4)
++		p1_apb_write(de, 0x2000 + i,
++			     p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24));
++}
++
++static inline __u32 dma_to_axi_addr(dma_addr_t a)
++{
++	return (__u32)(a >> 6);
++}
++
++static void write_bitstream(struct rpivid_dec_env *const de,
++			    const struct rpivid_dec_state *const s)
++{
++	// Note that FFmpeg removes emulation prevention bytes, so this is
++	// matched in the configuration here.
++	// Whether that is the correct behaviour or not is not clear in the
++	// spec.
++	const int rpi_use_emu = 1;
++	unsigned int offset = s->sh->data_bit_offset / 8 + 1;
++	const unsigned int len = (s->sh->bit_size + 7) / 8 - offset;
++	dma_addr_t addr;
++
++	if (s->src_addr != 0) {
++		addr = s->src_addr + offset;
++	} else {
++		memcpy(de->bit_copy_gptr->ptr + de->bit_copy_len,
++		       s->src_buf + offset, len);
++		addr = de->bit_copy_gptr->addr + de->bit_copy_len;
++		de->bit_copy_len += (len + 63) & ~63;
++	}
++	offset = addr & 63;
++
++	p1_apb_write(de, RPI_BFBASE, dma_to_axi_addr(addr));
++	p1_apb_write(de, RPI_BFNUM, len);
++	p1_apb_write(de, RPI_BFCONTROL, offset + (1 << 7)); // Stop
++	p1_apb_write(de, RPI_BFCONTROL, offset + (rpi_use_emu << 6));
++}
++
++//////////////////////////////////////////////////////////////////////////////
++
++static void write_slice(struct rpivid_dec_env *const de,
++			const struct rpivid_dec_state *const s,
++			const unsigned int slice_w,
++			const unsigned int slice_h)
++{
++	u32 u32 = (s->sh->slice_type << 12) +
++		  (((s->sh->flags &
++		     V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_LUMA) != 0)
++		   << 14) +
++		  (((s->sh->flags &
++		     V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_CHROMA) != 0)
++		   << 15) +
++		  (slice_w << 17) + (slice_h << 24);
++
++	u32 |= (s->max_num_merge_cand << 0) + (s->nb_refs[L0] << 4) +
++	       (s->nb_refs[L1] << 8);
++
++	if (s->sh->slice_type == HEVC_SLICE_B)
++		u32 |= ((s->sh->flags &
++			 V4L2_HEVC_SLICE_PARAMS_FLAG_MVD_L1_ZERO) != 0)
++		       << 16;
++	p1_apb_write(de, RPI_SLICE, u32);
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Tiles mode
++
++static void new_entry_point(struct rpivid_dec_env *const de,
++			    const struct rpivid_dec_state *const s,
++			    const int do_bte,
++			    const int reset_qp_y, const int ctb_addr_ts)
++{
++	int ctb_col = s->ctb_addr_ts_to_rs[ctb_addr_ts] %
++							de->pic_width_in_ctbs_y;
++	int ctb_row = s->ctb_addr_ts_to_rs[ctb_addr_ts] /
++							de->pic_width_in_ctbs_y;
++
++	int tile_x = ctb_to_tile(ctb_col, s->col_bd, s->num_tile_columns);
++	int tile_y = ctb_to_tile(ctb_row, s->row_bd, s->num_tile_rows);
++
++	int endx = s->col_bd[tile_x + 1] - 1;
++	int endy = s->row_bd[tile_y + 1] - 1;
++
++	u8 slice_w = ctb_to_slice_w_h(ctb_col, 1 << s->log2_ctb_size,
++				      s->sps.pic_width_in_luma_samples,
++				      s->col_bd, s->num_tile_columns);
++	u8 slice_h = ctb_to_slice_w_h(ctb_row, 1 << s->log2_ctb_size,
++				      s->sps.pic_height_in_luma_samples,
++				      s->row_bd, s->num_tile_rows);
++
++	p1_apb_write(de, RPI_TILESTART,
++		     s->col_bd[tile_x] + (s->row_bd[tile_y] << 16));
++	p1_apb_write(de, RPI_TILEEND, endx + (endy << 16));
++
++	if (do_bte)
++		p1_apb_write(de, RPI_BEGINTILEEND, endx + (endy << 16));
++
++	write_slice(de, s, slice_w, slice_h);
++
++	if (reset_qp_y) {
++		unsigned int sps_qp_bd_offset =
++			6 * s->sps.bit_depth_luma_minus8;
++
++		p1_apb_write(de, RPI_QP, sps_qp_bd_offset + s->slice_qp);
++	}
++
++	p1_apb_write(de, RPI_MODE,
++		     (0xFFFF << 0) + (0x0 << 16) +
++			     ((tile_x == s->num_tile_columns - 1) << 17) +
++			     ((tile_y == s->num_tile_rows - 1) << 18));
++
++	p1_apb_write(de, RPI_CONTROL, (ctb_col << 0) + (ctb_row << 16));
++}
++
++//////////////////////////////////////////////////////////////////////////////
++
++static void new_slice_segment(struct rpivid_dec_env *const de,
++			      const struct rpivid_dec_state *const s)
++{
++	const struct v4l2_ctrl_hevc_sps *const sps = &s->sps;
++	const struct v4l2_ctrl_hevc_pps *const pps = &s->pps;
++
++	p1_apb_write(de,
++		     RPI_SPS0,
++		     ((sps->log2_min_luma_coding_block_size_minus3 + 3) << 0) |
++		     (s->log2_ctb_size << 4) |
++		     ((sps->log2_min_luma_transform_block_size_minus2 + 2)
++							<< 8) |
++		     ((sps->log2_min_luma_transform_block_size_minus2 + 2 +
++		       sps->log2_diff_max_min_luma_transform_block_size)
++						<< 12) |
++		     ((sps->bit_depth_luma_minus8 + 8) << 16) |
++		     ((sps->bit_depth_chroma_minus8 + 8) << 20) |
++		     (sps->max_transform_hierarchy_depth_intra << 24) |
++		     (sps->max_transform_hierarchy_depth_inter << 28));
++
++	p1_apb_write(de,
++		     RPI_SPS1,
++		     ((sps->pcm_sample_bit_depth_luma_minus1 + 1) << 0) |
++		     ((sps->pcm_sample_bit_depth_chroma_minus1 + 1) << 4) |
++		     ((sps->log2_min_pcm_luma_coding_block_size_minus3 + 3)
++						<< 8) |
++		     ((sps->log2_min_pcm_luma_coding_block_size_minus3 + 3 +
++		       sps->log2_diff_max_min_pcm_luma_coding_block_size)
++						<< 12) |
++		     (((sps->flags & V4L2_HEVC_SPS_FLAG_SEPARATE_COLOUR_PLANE) ?
++				0 : sps->chroma_format_idc) << 16) |
++		     ((!!(sps->flags & V4L2_HEVC_SPS_FLAG_AMP_ENABLED)) << 18) |
++		     ((!!(sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) << 19) |
++		     ((!!(sps->flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED))
++						<< 20) |
++		     ((!!(sps->flags &
++			   V4L2_HEVC_SPS_FLAG_STRONG_INTRA_SMOOTHING_ENABLED))
++						<< 21));
++
++	p1_apb_write(de,
++		     RPI_PPS,
++		     ((s->log2_ctb_size - pps->diff_cu_qp_delta_depth) << 0) |
++		     ((!!(pps->flags & V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED))
++						 << 4) |
++		     ((!!(pps->flags &
++				V4L2_HEVC_PPS_FLAG_TRANSQUANT_BYPASS_ENABLED))
++						 << 5) |
++		     ((!!(pps->flags & V4L2_HEVC_PPS_FLAG_TRANSFORM_SKIP_ENABLED))
++						 << 6) |
++		     ((!!(pps->flags &
++				V4L2_HEVC_PPS_FLAG_SIGN_DATA_HIDING_ENABLED))
++						<< 7) |
++		     (((pps->pps_cb_qp_offset + s->sh->slice_cb_qp_offset) & 255)
++						<< 8) |
++		     (((pps->pps_cr_qp_offset + s->sh->slice_cr_qp_offset) & 255)
++						<< 16) |
++		     ((!!(pps->flags &
++				V4L2_HEVC_PPS_FLAG_CONSTRAINED_INTRA_PRED))
++						<< 24));
++
++	if ((sps->flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED) != 0)
++		write_scaling_factors(de);
++
++	if (!s->dependent_slice_segment_flag) {
++		int ctb_col = s->sh->slice_segment_addr %
++							de->pic_width_in_ctbs_y;
++		int ctb_row = s->sh->slice_segment_addr /
++							de->pic_width_in_ctbs_y;
++
++		de->reg_slicestart = (ctb_col << 0) + (ctb_row << 16);
++	}
++
++	p1_apb_write(de, RPI_SLICESTART, de->reg_slicestart);
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Slice messages
++
++static void msg_slice(struct rpivid_dec_env *const de, const u16 msg)
++{
++	de->slice_msgs[de->num_slice_msgs++] = msg;
++}
++
++static void program_slicecmds(struct rpivid_dec_env *const de,
++			      const int sliceid)
++{
++	int i;
++
++	p1_apb_write(de, RPI_SLICECMDS, de->num_slice_msgs + (sliceid << 8));
++
++	for (i = 0; i < de->num_slice_msgs; i++)
++		p1_apb_write(de, 0x4000 + 4 * i, de->slice_msgs[i] & 0xffff);
++}
++
++// NoBackwardPredictionFlag 8.3.5
++// Simply checks POCs
++static int has_backward(const struct v4l2_hevc_dpb_entry *const dpb,
++			const __u8 *const idx, const unsigned int n,
++			const unsigned int cur_poc)
++{
++	unsigned int i;
++
++	for (i = 0; i < n; ++i) {
++		// Compare mod 2^16
++		// We only get u16 pocs & 8.3.1 says
++		// "The bitstream shall not contain data that result in values
++		//  of DiffPicOrderCnt( picA, picB ) used in the decoding
++		//  process that are not in the range of −2^15 to 2^15 − 1,
++		//  inclusive."
++		if (((cur_poc - dpb[idx[i]].pic_order_cnt[0]) & 0x8000) != 0)
++			return 0;
++	}
++	return 1;
++}
++
++static void pre_slice_decode(struct rpivid_dec_env *const de,
++			     const struct rpivid_dec_state *const s)
++{
++	const struct v4l2_ctrl_hevc_slice_params *const sh = s->sh;
++	int weighted_pred_flag, idx;
++	u16 cmd_slice;
++	unsigned int collocated_from_l0_flag;
++
++	de->num_slice_msgs = 0;
++
++	cmd_slice = 0;
++	if (sh->slice_type == HEVC_SLICE_I)
++		cmd_slice = 1;
++	if (sh->slice_type == HEVC_SLICE_P)
++		cmd_slice = 2;
++	if (sh->slice_type == HEVC_SLICE_B)
++		cmd_slice = 3;
++
++	cmd_slice |= (s->nb_refs[L0] << 2) | (s->nb_refs[L1] << 6) |
++		     (s->max_num_merge_cand << 11);
++
++	collocated_from_l0_flag =
++		!s->slice_temporal_mvp ||
++		sh->slice_type != HEVC_SLICE_B ||
++		(sh->flags & V4L2_HEVC_SLICE_PARAMS_FLAG_COLLOCATED_FROM_L0);
++	cmd_slice |= collocated_from_l0_flag << 14;
++
++	if (sh->slice_type == HEVC_SLICE_P || sh->slice_type == HEVC_SLICE_B) {
++		// Flag to say all reference pictures are from the past
++		const int no_backward_pred_flag =
++			has_backward(sh->dpb, sh->ref_idx_l0, s->nb_refs[L0],
++				     sh->slice_pic_order_cnt) &&
++			has_backward(sh->dpb, sh->ref_idx_l1, s->nb_refs[L1],
++				     sh->slice_pic_order_cnt);
++		cmd_slice |= no_backward_pred_flag << 10;
++		msg_slice(de, cmd_slice);
++
++		if (s->slice_temporal_mvp) {
++			const __u8 *const rpl = collocated_from_l0_flag ?
++						sh->ref_idx_l0 : sh->ref_idx_l1;
++			de->dpbno_col = rpl[sh->collocated_ref_idx];
++			//v4l2_info(&de->ctx->dev->v4l2_dev,
++			//	    "L0=%d col_ref_idx=%d,
++			//          dpb_no=%d\n", collocated_from_l0_flag,
++			//          sh->collocated_ref_idx, de->dpbno_col);
++		}
++
++		// Write reference picture descriptions
++		weighted_pred_flag =
++			sh->slice_type == HEVC_SLICE_P ?
++				!!(s->pps.flags & V4L2_HEVC_PPS_FLAG_WEIGHTED_PRED) :
++				!!(s->pps.flags & V4L2_HEVC_PPS_FLAG_WEIGHTED_BIPRED);
++
++		for (idx = 0; idx < s->nb_refs[L0]; ++idx) {
++			unsigned int dpb_no = sh->ref_idx_l0[idx];
++			//v4l2_info(&de->ctx->dev->v4l2_dev,
++			//	  "L0[%d]=dpb[%d]\n", idx, dpb_no);
++
++			msg_slice(de,
++				  dpb_no |
++				  (sh->dpb[dpb_no].rps ==
++					V4L2_HEVC_DPB_ENTRY_RPS_LT_CURR ?
++						 (1 << 4) : 0) |
++				  (weighted_pred_flag ? (3 << 5) : 0));
++			msg_slice(de, sh->dpb[dpb_no].pic_order_cnt[0]);
++
++			if (weighted_pred_flag) {
++				const struct v4l2_hevc_pred_weight_table
++					*const w = &sh->pred_weight_table;
++				const int luma_weight_denom =
++					(1 << w->luma_log2_weight_denom);
++				const unsigned int chroma_log2_weight_denom =
++					(w->luma_log2_weight_denom +
++					 w->delta_chroma_log2_weight_denom);
++				const int chroma_weight_denom =
++					(1 << chroma_log2_weight_denom);
++
++				msg_slice(de,
++					  w->luma_log2_weight_denom |
++					  (((w->delta_luma_weight_l0[idx] +
++					     luma_weight_denom) & 0x1ff)
++						 << 3));
++				msg_slice(de, w->luma_offset_l0[idx] & 0xff);
++				msg_slice(de,
++					  chroma_log2_weight_denom |
++					  (((w->delta_chroma_weight_l0[idx][0] +
++					     chroma_weight_denom) & 0x1ff)
++						   << 3));
++				msg_slice(de,
++					  w->chroma_offset_l0[idx][0] & 0xff);
++				msg_slice(de,
++					  chroma_log2_weight_denom |
++					  (((w->delta_chroma_weight_l0[idx][1] +
++					     chroma_weight_denom) & 0x1ff)
++						   << 3));
++				msg_slice(de,
++					  w->chroma_offset_l0[idx][1] & 0xff);
++			}
++		}
++
++		for (idx = 0; idx < s->nb_refs[L1]; ++idx) {
++			unsigned int dpb_no = sh->ref_idx_l1[idx];
++			//v4l2_info(&de->ctx->dev->v4l2_dev,
++			//          "L1[%d]=dpb[%d]\n", idx, dpb_no);
++			msg_slice(de,
++				  dpb_no |
++				  (sh->dpb[dpb_no].rps ==
++					 V4L2_HEVC_DPB_ENTRY_RPS_LT_CURR ?
++						 (1 << 4) : 0) |
++					(weighted_pred_flag ? (3 << 5) : 0));
++			msg_slice(de, sh->dpb[dpb_no].pic_order_cnt[0]);
++			if (weighted_pred_flag) {
++				const struct v4l2_hevc_pred_weight_table
++					*const w = &sh->pred_weight_table;
++				const int luma_weight_denom =
++					(1 << w->luma_log2_weight_denom);
++				const unsigned int chroma_log2_weight_denom =
++					(w->luma_log2_weight_denom +
++					 w->delta_chroma_log2_weight_denom);
++				const int chroma_weight_denom =
++					(1 << chroma_log2_weight_denom);
++
++				msg_slice(de,
++					  w->luma_log2_weight_denom |
++					  (((w->delta_luma_weight_l1[idx] +
++					     luma_weight_denom) & 0x1ff) << 3));
++				msg_slice(de, w->luma_offset_l1[idx] & 0xff);
++				msg_slice(de,
++					  chroma_log2_weight_denom |
++					  (((w->delta_chroma_weight_l1[idx][0] +
++					     chroma_weight_denom) & 0x1ff)
++							<< 3));
++				msg_slice(de,
++					  w->chroma_offset_l1[idx][0] & 0xff);
++				msg_slice(de,
++					  chroma_log2_weight_denom |
++					  (((w->delta_chroma_weight_l1[idx][1] +
++					     chroma_weight_denom) & 0x1ff)
++						   << 3));
++				msg_slice(de,
++					  w->chroma_offset_l1[idx][1] & 0xff);
++			}
++		}
++	} else {
++		msg_slice(de, cmd_slice);
++	}
++
++	msg_slice(de,
++		  (sh->slice_beta_offset_div2 & 15) |
++		  ((sh->slice_tc_offset_div2 & 15) << 4) |
++		  ((sh->flags &
++		    V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_DEBLOCKING_FILTER_DISABLED) ?
++						1 << 8 : 0) |
++		  ((sh->flags &
++			  V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_LOOP_FILTER_ACROSS_SLICES_ENABLED) ?
++						1 << 9 : 0) |
++		  ((s->pps.flags &
++			  V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED) ?
++						1 << 10 : 0));
++
++	msg_slice(de, ((sh->slice_cr_qp_offset & 31) << 5) +
++		       (sh->slice_cb_qp_offset & 31)); // CMD_QPOFF
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Write STATUS register with expected end CTU address of previous slice
++
++static void end_previous_slice(struct rpivid_dec_env *const de,
++			       const struct rpivid_dec_state *const s,
++			       const int ctb_addr_ts)
++{
++	int last_x =
++		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] % de->pic_width_in_ctbs_y;
++	int last_y =
++		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] / de->pic_width_in_ctbs_y;
++
++	p1_apb_write(de, RPI_STATUS, 1 + (last_x << 5) + (last_y << 18));
++}
++
++static void wpp_pause(struct rpivid_dec_env *const de, int ctb_row)
++{
++	p1_apb_write(de, RPI_STATUS, (ctb_row << 18) + 0x25);
++	p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++	p1_apb_write(de, RPI_MODE,
++		     ctb_row == de->pic_height_in_ctbs_y - 1 ?
++							0x70000 : 0x30000);
++	p1_apb_write(de, RPI_CONTROL, (ctb_row << 16) + 2);
++}
++
++static void wpp_end_previous_slice(struct rpivid_dec_env *const de,
++				   const struct rpivid_dec_state *const s,
++				   int ctb_addr_ts)
++{
++	int new_x = s->sh->slice_segment_addr % de->pic_width_in_ctbs_y;
++	int new_y = s->sh->slice_segment_addr / de->pic_width_in_ctbs_y;
++	int last_x =
++		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] % de->pic_width_in_ctbs_y;
++	int last_y =
++		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] / de->pic_width_in_ctbs_y;
++
++	if (de->wpp_entry_x < 2 && (de->wpp_entry_y < new_y || new_x > 2) &&
++	    de->pic_width_in_ctbs_y > 2)
++		wpp_pause(de, last_y);
++	p1_apb_write(de, RPI_STATUS, 1 + (last_x << 5) + (last_y << 18));
++	if (new_x == 2 || (de->pic_width_in_ctbs_y == 2 &&
++			   de->wpp_entry_y < new_y))
++		p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Wavefront mode
++
++static void wpp_entry_point(struct rpivid_dec_env *const de,
++			    const struct rpivid_dec_state *const s,
++			    const int do_bte,
++			    const int reset_qp_y, const int ctb_addr_ts)
++{
++	int ctb_size = 1 << s->log2_ctb_size;
++	int ctb_addr_rs = s->ctb_addr_ts_to_rs[ctb_addr_ts];
++
++	int ctb_col = de->wpp_entry_x = ctb_addr_rs % de->pic_width_in_ctbs_y;
++	int ctb_row = de->wpp_entry_y = ctb_addr_rs / de->pic_width_in_ctbs_y;
++
++	int endx = de->pic_width_in_ctbs_y - 1;
++	int endy = ctb_row;
++
++	u8 slice_w = ctb_to_slice_w_h(ctb_col, ctb_size,
++				      s->sps.pic_width_in_luma_samples,
++				      s->col_bd, s->num_tile_columns);
++	u8 slice_h = ctb_to_slice_w_h(ctb_row, ctb_size,
++				      s->sps.pic_height_in_luma_samples,
++				      s->row_bd, s->num_tile_rows);
++
++	p1_apb_write(de, RPI_TILESTART, 0);
++	p1_apb_write(de, RPI_TILEEND, endx + (endy << 16));
++
++	if (do_bte)
++		p1_apb_write(de, RPI_BEGINTILEEND, endx + (endy << 16));
++
++	write_slice(de, s, slice_w,
++		    ctb_row == de->pic_height_in_ctbs_y - 1 ?
++							slice_h : ctb_size);
++
++	if (reset_qp_y) {
++		unsigned int sps_qp_bd_offset =
++			6 * s->sps.bit_depth_luma_minus8;
++
++		p1_apb_write(de, RPI_QP, sps_qp_bd_offset + s->slice_qp);
++	}
++
++	p1_apb_write(de, RPI_MODE,
++		     ctb_row == de->pic_height_in_ctbs_y - 1 ?
++							0x60001 : 0x20001);
++	p1_apb_write(de, RPI_CONTROL, (ctb_col << 0) + (ctb_row << 16));
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Wavefront mode
++
++static void wpp_decode_slice(struct rpivid_dec_env *const de,
++			     const struct rpivid_dec_state *const s,
++			     const struct v4l2_ctrl_hevc_slice_params *sh,
++			     int ctb_addr_ts)
++{
++	int i, reset_qp_y = 1;
++	int indep = !s->dependent_slice_segment_flag;
++	int ctb_col = s->sh->slice_segment_addr % de->pic_width_in_ctbs_y;
++
++	if (ctb_addr_ts)
++		wpp_end_previous_slice(de, s, ctb_addr_ts);
++	pre_slice_decode(de, s);
++	write_bitstream(de, s);
++	if (ctb_addr_ts == 0 || indep || de->pic_width_in_ctbs_y == 1)
++		write_prob(de, s);
++	else if (ctb_col == 0)
++		p1_apb_write(de, RPI_TRANSFER, PROB_RELOAD);
++	else
++		reset_qp_y = 0;
++	program_slicecmds(de, s->slice_idx);
++	new_slice_segment(de, s);
++	wpp_entry_point(de, s, indep, reset_qp_y, ctb_addr_ts);
++
++	for (i = 0; i < s->sh->num_entry_point_offsets; i++) {
++		int ctb_addr_rs = s->ctb_addr_ts_to_rs[ctb_addr_ts];
++		int ctb_row = ctb_addr_rs / de->pic_width_in_ctbs_y;
++		int last_x = de->pic_width_in_ctbs_y - 1;
++
++		if (de->pic_width_in_ctbs_y > 2)
++			wpp_pause(de, ctb_row);
++		p1_apb_write(de, RPI_STATUS,
++			     (ctb_row << 18) + (last_x << 5) + 2);
++		if (de->pic_width_in_ctbs_y == 2)
++			p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++		if (de->pic_width_in_ctbs_y == 1)
++			write_prob(de, s);
++		else
++			p1_apb_write(de, RPI_TRANSFER, PROB_RELOAD);
++		ctb_addr_ts += s->column_width[0];
++		wpp_entry_point(de, s, 0, 1, ctb_addr_ts);
++	}
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Tiles mode
++
++static void decode_slice(struct rpivid_dec_env *const de,
++			 const struct rpivid_dec_state *const s,
++			 const struct v4l2_ctrl_hevc_slice_params *const sh,
++			 int ctb_addr_ts)
++{
++	int i, reset_qp_y;
++
++	if (ctb_addr_ts)
++		end_previous_slice(de, s, ctb_addr_ts);
++
++	pre_slice_decode(de, s);
++	write_bitstream(de, s);
++
++#if DEBUG_TRACE_P1_CMD
++	if (p1_z < 256) {
++		v4l2_info(&de->ctx->dev->v4l2_dev,
++			  "TS=%d, tile=%d/%d, dss=%d, flags=%#llx\n",
++			  ctb_addr_ts, s->tile_id[ctb_addr_ts],
++			  s->tile_id[ctb_addr_ts - 1],
++			  s->dependent_slice_segment_flag, sh->flags);
++	}
++#endif
++
++	reset_qp_y = ctb_addr_ts == 0 ||
++		   s->tile_id[ctb_addr_ts] != s->tile_id[ctb_addr_ts - 1] ||
++		   !s->dependent_slice_segment_flag;
++	if (reset_qp_y)
++		write_prob(de, s);
++
++	program_slicecmds(de, s->slice_idx);
++	new_slice_segment(de, s);
++	new_entry_point(de, s, !s->dependent_slice_segment_flag, reset_qp_y,
++			ctb_addr_ts);
++
++	for (i = 0; i < s->sh->num_entry_point_offsets; i++) {
++		int ctb_addr_rs = s->ctb_addr_ts_to_rs[ctb_addr_ts];
++		int ctb_col = ctb_addr_rs % de->pic_width_in_ctbs_y;
++		int ctb_row = ctb_addr_rs / de->pic_width_in_ctbs_y;
++		int tile_x = ctb_to_tile(ctb_col, s->col_bd,
++					 s->num_tile_columns - 1);
++		int tile_y =
++			ctb_to_tile(ctb_row, s->row_bd, s->num_tile_rows - 1);
++		int last_x = s->col_bd[tile_x + 1] - 1;
++		int last_y = s->row_bd[tile_y + 1] - 1;
++
++		p1_apb_write(de, RPI_STATUS,
++			     2 + (last_x << 5) + (last_y << 18));
++		write_prob(de, s);
++		ctb_addr_ts += s->column_width[tile_x] * s->row_height[tile_y];
++		new_entry_point(de, s, 0, 1, ctb_addr_ts);
++	}
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Scaling factors
++
++static void expand_scaling_list(const unsigned int size_id,
++				const unsigned int matrix_id, u8 *const dst0,
++				const u8 *const src0, uint8_t dc)
++{
++	u8 *d;
++	unsigned int x, y;
++
++	// FIXME: matrix_id is unused ?
++	switch (size_id) {
++	case 0:
++		memcpy(dst0, src0, 16);
++		break;
++	case 1:
++		memcpy(dst0, src0, 64);
++		break;
++	case 2:
++		d = dst0;
++
++		for (y = 0; y != 16; y++) {
++			const u8 *s = src0 + (y >> 1) * 8;
++
++			for (x = 0; x != 8; ++x) {
++				*d++ = *s;
++				*d++ = *s++;
++			}
++		}
++		dst0[0] = dc;
++		break;
++	default:
++		d = dst0;
++
++		for (y = 0; y != 32; y++) {
++			const u8 *s = src0 + (y >> 2) * 8;
++
++			for (x = 0; x != 8; ++x) {
++				*d++ = *s;
++				*d++ = *s;
++				*d++ = *s;
++				*d++ = *s++;
++			}
++		}
++		dst0[0] = dc;
++		break;
++	}
++}
++
++static void populate_scaling_factors(const struct rpivid_run *const run,
++				     struct rpivid_dec_env *const de,
++				     const struct rpivid_dec_state *const s)
++{
++	const struct v4l2_ctrl_hevc_scaling_matrix *const sl =
++		run->h265.scaling_matrix;
++	// Array of constants for scaling factors
++	static const u32 scaling_factor_offsets[4][6] = {
++		// MID0    MID1    MID2    MID3    MID4    MID5
++		// SID0 (4x4)
++		{ 0x0000, 0x0010, 0x0020, 0x0030, 0x0040, 0x0050 },
++		// SID1 (8x8)
++		{ 0x0060, 0x00A0, 0x00E0, 0x0120, 0x0160, 0x01A0 },
++		// SID2 (16x16)
++		{ 0x01E0, 0x02E0, 0x03E0, 0x04E0, 0x05E0, 0x06E0 },
++		// SID3 (32x32)
++		{ 0x07E0, 0x0BE0, 0x0000, 0x0000, 0x0000, 0x0000 }
++	};
++
++	unsigned int mid;
++
++	for (mid = 0; mid < 6; mid++)
++		expand_scaling_list(0, mid,
++				    de->scaling_factors +
++					    scaling_factor_offsets[0][mid],
++				    sl->scaling_list_4x4[mid], 0);
++	for (mid = 0; mid < 6; mid++)
++		expand_scaling_list(1, mid,
++				    de->scaling_factors +
++					    scaling_factor_offsets[1][mid],
++				    sl->scaling_list_8x8[mid], 0);
++	for (mid = 0; mid < 6; mid++)
++		expand_scaling_list(2, mid,
++				    de->scaling_factors +
++					    scaling_factor_offsets[2][mid],
++				    sl->scaling_list_16x16[mid],
++				    sl->scaling_list_dc_coef_16x16[mid]);
++	for (mid = 0; mid < 2; mid += 1)
++		expand_scaling_list(3, mid,
++				    de->scaling_factors +
++					    scaling_factor_offsets[3][mid],
++				    sl->scaling_list_32x32[mid],
++				    sl->scaling_list_dc_coef_32x32[mid]);
++}
++
++static void free_ps_info(struct rpivid_dec_state *const s)
++{
++	kfree(s->ctb_addr_rs_to_ts);
++	s->ctb_addr_rs_to_ts = NULL;
++	kfree(s->ctb_addr_ts_to_rs);
++	s->ctb_addr_ts_to_rs = NULL;
++	kfree(s->tile_id);
++	s->tile_id = NULL;
++
++	kfree(s->col_bd);
++	s->col_bd = NULL;
++	kfree(s->row_bd);
++	s->row_bd = NULL;
++}
++
++static int updated_ps(struct rpivid_dec_state *const s)
++{
++	unsigned int ctb_addr_rs;
++	int j, x, y, tile_id;
++	unsigned int i;
++
++	free_ps_info(s);
++
++	// Inferred parameters
++	s->log2_ctb_size = s->sps.log2_min_luma_coding_block_size_minus3 + 3 +
++			   s->sps.log2_diff_max_min_luma_coding_block_size;
++
++	s->ctb_width = (s->sps.pic_width_in_luma_samples +
++			(1 << s->log2_ctb_size) - 1) >>
++		       s->log2_ctb_size;
++	s->ctb_height = (s->sps.pic_height_in_luma_samples +
++			 (1 << s->log2_ctb_size) - 1) >>
++			s->log2_ctb_size;
++	s->ctb_size = s->ctb_width * s->ctb_height;
++
++	// Inferred parameters
++
++	if (!(s->pps.flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
++		s->num_tile_columns = 1;
++		s->num_tile_rows = 1;
++		s->column_width[0] = s->ctb_width;
++		s->row_height[0] = s->ctb_height;
++	} else {
++		s->num_tile_columns = s->pps.num_tile_columns_minus1 + 1;
++		s->num_tile_rows = s->pps.num_tile_rows_minus1 + 1;
++		for (i = 0; i < s->num_tile_columns; ++i)
++			s->column_width[i] = s->pps.column_width_minus1[i] + 1;
++		for (i = 0; i < s->num_tile_rows; ++i)
++			s->row_height[i] = s->pps.row_height_minus1[i] + 1;
++	}
++
++	s->col_bd = kmalloc((s->num_tile_columns + 1) * sizeof(*s->col_bd),
++			    GFP_KERNEL);
++	s->row_bd = kmalloc((s->num_tile_rows + 1) * sizeof(*s->row_bd),
++			    GFP_KERNEL);
++
++	s->col_bd[0] = 0;
++	for (i = 0; i < s->num_tile_columns; i++)
++		s->col_bd[i + 1] = s->col_bd[i] + s->column_width[i];
++
++	s->row_bd[0] = 0;
++	for (i = 0; i < s->num_tile_rows; i++)
++		s->row_bd[i + 1] = s->row_bd[i] + s->row_height[i];
++
++	s->ctb_addr_rs_to_ts = kmalloc_array(s->ctb_size,
++					     sizeof(*s->ctb_addr_rs_to_ts),
++					     GFP_KERNEL);
++	s->ctb_addr_ts_to_rs = kmalloc_array(s->ctb_size,
++					     sizeof(*s->ctb_addr_ts_to_rs),
++					     GFP_KERNEL);
++	s->tile_id = kmalloc_array(s->ctb_size, sizeof(*s->tile_id),
++				   GFP_KERNEL);
++
++	for (ctb_addr_rs = 0; ctb_addr_rs < s->ctb_size; ctb_addr_rs++) {
++		int tb_x = ctb_addr_rs % s->ctb_width;
++		int tb_y = ctb_addr_rs / s->ctb_width;
++		int tile_x = 0;
++		int tile_y = 0;
++		int val = 0;
++
++		for (i = 0; i < s->num_tile_columns; i++) {
++			if (tb_x < s->col_bd[i + 1]) {
++				tile_x = i;
++				break;
++			}
++		}
++
++		for (i = 0; i < s->num_tile_rows; i++) {
++			if (tb_y < s->row_bd[i + 1]) {
++				tile_y = i;
++				break;
++			}
++		}
++
++		for (i = 0; i < tile_x; i++)
++			val += s->row_height[tile_y] * s->column_width[i];
++		for (i = 0; i < tile_y; i++)
++			val += s->ctb_width * s->row_height[i];
++
++		val += (tb_y - s->row_bd[tile_y]) * s->column_width[tile_x] +
++		       tb_x - s->col_bd[tile_x];
++
++		s->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
++		s->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
++	}
++
++	for (j = 0, tile_id = 0; j < s->num_tile_rows; j++)
++		for (i = 0; i < s->num_tile_columns; i++, tile_id++)
++			for (y = s->row_bd[j]; y < s->row_bd[j + 1]; y++)
++				for (x = s->col_bd[i];
++				     x < s->col_bd[i + 1];
++				     x++)
++					s->tile_id[s->ctb_addr_rs_to_ts
++							   [y * s->ctb_width +
++							    x]] = tile_id;
++
++	return 0;
++}
++
++static int frame_end(struct rpivid_dev *const dev,
++		     struct rpivid_dec_env *const de,
++		     const struct rpivid_dec_state *const s)
++{
++	const unsigned int last_x = s->col_bd[s->num_tile_columns] - 1;
++	const unsigned int last_y = s->row_bd[s->num_tile_rows] - 1;
++	size_t cmd_size;
++
++	if (s->pps.flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED) {
++		if (de->wpp_entry_x < 2 && de->pic_width_in_ctbs_y > 2)
++			wpp_pause(de, last_y);
++	}
++	p1_apb_write(de, RPI_STATUS, 1 + (last_x << 5) + (last_y << 18));
++
++	// Copy commands out to dma buf
++	cmd_size = de->cmd_len * sizeof(de->cmd_fifo[0]);
++
++	if (!de->cmd_copy_gptr->ptr || cmd_size > de->cmd_copy_gptr->size) {
++		size_t cmd_alloc = round_up_size(cmd_size);
++
++		if (gptr_realloc_new(dev, de->cmd_copy_gptr, cmd_alloc)) {
++			v4l2_err(&dev->v4l2_dev,
++				 "Alloc cmd buffer (%d): FAILED\n", cmd_alloc);
++			return -ENOMEM;
++		}
++		v4l2_info(&dev->v4l2_dev, "Alloc cmd buffer (%d): OK\n",
++			  cmd_alloc);
++	}
++
++	memcpy(de->cmd_copy_gptr->ptr, de->cmd_fifo, cmd_size);
++	return 0;
++}
++
++static void setup_colmv(struct rpivid_ctx *const ctx, struct rpivid_run *run,
++			struct rpivid_dec_state *const s)
++{
++	ctx->colmv_stride = ALIGN(s->sps.pic_width_in_luma_samples, 64);
++	ctx->colmv_picsize = ctx->colmv_stride *
++		(ALIGN(s->sps.pic_height_in_luma_samples, 64) >> 4);
++}
++
++// Can be called from irq context
++static struct rpivid_dec_env *dec_env_new(struct rpivid_ctx *const ctx)
++{
++	struct rpivid_dec_env *de;
++	unsigned long lock_flags;
++
++	spin_lock_irqsave(&ctx->dec_lock, lock_flags);
++
++	de = ctx->dec_free;
++	if (de) {
++		ctx->dec_free = de->next;
++		de->next = NULL;
++		de->state = RPIVID_DECODE_SLICE_START;
++	}
++
++	spin_unlock_irqrestore(&ctx->dec_lock, lock_flags);
++	return de;
++}
++
++// Can be called from irq context
++static void dec_env_delete(struct rpivid_dec_env *const de)
++{
++	struct rpivid_ctx * const ctx = de->ctx;
++	unsigned long lock_flags;
++
++	aux_q_release(ctx, &de->frame_aux);
++	aux_q_release(ctx, &de->col_aux);
++
++	spin_lock_irqsave(&ctx->dec_lock, lock_flags);
++
++	de->state = RPIVID_DECODE_END;
++	de->next = ctx->dec_free;
++	ctx->dec_free = de;
++
++	spin_unlock_irqrestore(&ctx->dec_lock, lock_flags);
++}
++
++static void dec_env_uninit(struct rpivid_ctx *const ctx)
++{
++	unsigned int i;
++
++	if (ctx->dec_pool) {
++		for (i = 0; i != RPIVID_DEC_ENV_COUNT; ++i) {
++			struct rpivid_dec_env *const de = ctx->dec_pool + i;
++
++			kfree(de->cmd_fifo);
++		}
++
++		kfree(ctx->dec_pool);
++	}
++
++	ctx->dec_pool = NULL;
++	ctx->dec_free = NULL;
++}
++
++static int dec_env_init(struct rpivid_ctx *const ctx)
++{
++	unsigned int i;
++
++	ctx->dec_pool = kzalloc(sizeof(*ctx->dec_pool) * RPIVID_DEC_ENV_COUNT,
++				GFP_KERNEL);
++	if (!ctx->dec_pool)
++		return -1;
++
++	spin_lock_init(&ctx->dec_lock);
++
++	// Build free chain
++	ctx->dec_free = ctx->dec_pool;
++	for (i = 0; i != RPIVID_DEC_ENV_COUNT - 1; ++i)
++		ctx->dec_pool[i].next = ctx->dec_pool + i + 1;
++
++	// Fill in other bits
++	for (i = 0; i != RPIVID_DEC_ENV_COUNT; ++i) {
++		struct rpivid_dec_env *const de = ctx->dec_pool + i;
++
++		de->ctx = ctx;
++		de->decode_order = i;
++		de->cmd_max = 1024;
++		de->cmd_fifo = kmalloc_array(de->cmd_max,
++					     sizeof(struct rpi_cmd),
++					     GFP_KERNEL);
++		if (!de->cmd_fifo)
++			goto fail;
++	}
++
++	return 0;
++
++fail:
++	dec_env_uninit(ctx);
++	return -1;
++}
++
++// Assume that we get exactly the same DPB for every slice
++// it makes no real sense otherwise
++#if V4L2_HEVC_DPB_ENTRIES_NUM_MAX > 16
++#error HEVC_DPB_ENTRIES > h/w slots
++#endif
++
++static u32 mk_config2(const struct rpivid_dec_state *const s)
++{
++	const struct v4l2_ctrl_hevc_sps *const sps = &s->sps;
++	const struct v4l2_ctrl_hevc_pps *const pps = &s->pps;
++	u32 c;
++	// BitDepthY
++	c = (sps->bit_depth_luma_minus8 + 8) << 0;
++	 // BitDepthC
++	c |= (sps->bit_depth_chroma_minus8 + 8) << 4;
++	 // BitDepthY
++	if (sps->bit_depth_luma_minus8)
++		c |= BIT(8);
++	// BitDepthC
++	if (sps->bit_depth_chroma_minus8)
++		c |= BIT(9);
++	c |= s->log2_ctb_size << 10;
++	if (pps->flags & V4L2_HEVC_PPS_FLAG_CONSTRAINED_INTRA_PRED)
++		c |= BIT(13);
++	if (sps->flags & V4L2_HEVC_SPS_FLAG_STRONG_INTRA_SMOOTHING_ENABLED)
++		c |= BIT(14);
++	if (sps->flags & V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED)
++		c |= BIT(15); /* Write motion vectors to external memory */
++	c |= (pps->log2_parallel_merge_level_minus2 + 2) << 16;
++	if (s->slice_temporal_mvp)
++		c |= BIT(19);
++	if (sps->flags & V4L2_HEVC_SPS_FLAG_PCM_LOOP_FILTER_DISABLED)
++		c |= BIT(20);
++	c |= (pps->pps_cb_qp_offset & 31) << 21;
++	c |= (pps->pps_cr_qp_offset & 31) << 26;
++	return c;
++}
++
++static void rpivid_h265_setup(struct rpivid_ctx *ctx, struct rpivid_run *run)
++{
++	struct rpivid_dev *const dev = ctx->dev;
++	const struct v4l2_ctrl_hevc_slice_params *const sh =
++						run->h265.slice_params;
++	const struct v4l2_hevc_pred_weight_table *pred_weight_table;
++	struct rpivid_q_aux *dpb_q_aux[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
++	struct rpivid_dec_state *const s = ctx->state;
++	struct vb2_queue *vq;
++	struct rpivid_dec_env *de;
++	int ctb_addr_ts;
++	unsigned int i;
++	int use_aux;
++	bool slice_temporal_mvp;
++
++	pred_weight_table = &sh->pred_weight_table;
++
++	s->frame_end =
++		((run->src->flags & V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF) == 0);
++
++	de = ctx->dec0;
++	slice_temporal_mvp = (sh->flags &
++		   V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_TEMPORAL_MVP_ENABLED);
++
++	if (de && de->state != RPIVID_DECODE_END) {
++		++s->slice_idx;
++
++		switch (de->state) {
++		case RPIVID_DECODE_SLICE_CONTINUE:
++			// Expected state
++			break;
++		default:
++			v4l2_err(&dev->v4l2_dev, "%s: Unexpected state: %d\n",
++				 __func__, de->state);
++		/* FALLTHRU */
++		case RPIVID_DECODE_ERROR_CONTINUE:
++			// Uncleared error - fail now
++			goto fail;
++		}
++
++		if (s->slice_temporal_mvp != slice_temporal_mvp) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Slice Temporal MVP non-constant\n");
++			goto fail;
++		}
++	} else {
++		/* Frame start */
++		unsigned int ctb_size_y;
++		bool sps_changed = false;
++
++		if (memcmp(&s->sps, run->h265.sps, sizeof(s->sps)) != 0) {
++			/* SPS changed */
++			v4l2_info(&dev->v4l2_dev, "SPS changed\n");
++			memcpy(&s->sps, run->h265.sps, sizeof(s->sps));
++			sps_changed = true;
++		}
++		if (sps_changed ||
++		    memcmp(&s->pps, run->h265.pps, sizeof(s->pps)) != 0) {
++			/* SPS changed */
++			v4l2_info(&dev->v4l2_dev, "PPS changed\n");
++			memcpy(&s->pps, run->h265.pps, sizeof(s->pps));
++
++			/* Recalc stuff as required */
++			updated_ps(s);
++		}
++
++		de = dec_env_new(ctx);
++		if (!de) {
++			v4l2_err(&dev->v4l2_dev,
++				 "Failed to find free decode env\n");
++			goto fail;
++		}
++		ctx->dec0 = de;
++
++		ctb_size_y =
++			1U << (s->sps.log2_min_luma_coding_block_size_minus3 +
++			       3 +
++			       s->sps.log2_diff_max_min_luma_coding_block_size);
++
++		de->pic_width_in_ctbs_y =
++			(s->sps.pic_width_in_luma_samples + ctb_size_y - 1) /
++				ctb_size_y; // 7-15
++		de->pic_height_in_ctbs_y =
++			(s->sps.pic_height_in_luma_samples + ctb_size_y - 1) /
++				ctb_size_y; // 7-17
++		de->cmd_len = 0;
++		de->dpbno_col = ~0U;
++
++		de->bit_copy_gptr = ctx->bitbufs + 0;
++		de->bit_copy_len = 0;
++		de->cmd_copy_gptr = ctx->cmdbufs + 0;
++
++		de->frame_c_offset = ctx->dst_fmt.height * 128;
++		de->frame_stride = ctx->dst_fmt.bytesperline * 128;
++		de->frame_addr =
++			vb2_dma_contig_plane_dma_addr(&run->dst->vb2_buf, 0);
++		de->frame_aux = NULL;
++
++		if (s->sps.bit_depth_luma_minus8 !=
++		    s->sps.bit_depth_chroma_minus8) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Chroma depth (%d) != Luma depth (%d)\n",
++				  s->sps.bit_depth_chroma_minus8 + 8,
++				  s->sps.bit_depth_luma_minus8 + 8);
++			goto fail;
++		}
++		if (s->sps.bit_depth_luma_minus8 == 0) {
++			if (ctx->dst_fmt.pixelformat !=
++						V4L2_PIX_FMT_NV12_COL128) {
++				v4l2_err(&dev->v4l2_dev,
++					 "Pixel format %#x != NV12_COL128 for 8-bit output",
++					 ctx->dst_fmt.pixelformat);
++				goto fail;
++			}
++		} else if (s->sps.bit_depth_luma_minus8 == 2) {
++			if (ctx->dst_fmt.pixelformat !=
++						V4L2_PIX_FMT_NV12_10_COL128) {
++				v4l2_err(&dev->v4l2_dev,
++					 "Pixel format %#x != NV12_10_COL128 for 10-bit output",
++					 ctx->dst_fmt.pixelformat);
++				goto fail;
++			}
++		} else {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Luma depth (%d) unsupported\n",
++				  s->sps.bit_depth_luma_minus8 + 8);
++			goto fail;
++		}
++		if (run->dst->vb2_buf.num_planes != 1) {
++			v4l2_warn(&dev->v4l2_dev, "Capture planes (%d) != 1\n",
++				  run->dst->vb2_buf.num_planes);
++			goto fail;
++		}
++		if (run->dst->planes[0].length <
++		    ctx->dst_fmt.sizeimage) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Capture plane[0] length (%d) < sizeimage (%d)\n",
++				  run->dst->planes[0].length,
++				  ctx->dst_fmt.sizeimage);
++			goto fail;
++		}
++
++		if (s->sps.pic_width_in_luma_samples > 4096 ||
++		    s->sps.pic_height_in_luma_samples > 4096) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Pic dimension (%dx%d) exeeds 4096\n",
++				  s->sps.pic_width_in_luma_samples,
++				  s->sps.pic_height_in_luma_samples);
++			goto fail;
++		}
++
++		// Fill in ref planes with our address s.t. if we mess
++		// up refs somehow then we still have a valid address
++		// entry
++		for (i = 0; i != 16; ++i)
++			de->ref_addrs[i] = de->frame_addr;
++
++		/*
++		 * Stash initial temporal_mvp flag
++		 * This must be the same for all pic slices (7.4.7.1)
++		 */
++		s->slice_temporal_mvp = slice_temporal_mvp;
++
++		// Phase 2 reg pre-calc
++		de->rpi_config2 = mk_config2(s);
++		de->rpi_framesize = (s->sps.pic_height_in_luma_samples << 16) |
++				    s->sps.pic_width_in_luma_samples;
++		de->rpi_currpoc = sh->slice_pic_order_cnt;
++
++		if (s->sps.flags &
++		    V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED) {
++			setup_colmv(ctx, run, s);
++		}
++
++		s->slice_idx = 0;
++
++		if (sh->slice_segment_addr != 0) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "New frame but segment_addr=%d\n",
++				  sh->slice_segment_addr);
++			goto fail;
++		}
++
++		/* Allocate a bitbuf if we need one - don't need one if single
++		 * slice as we can use the src buf directly
++		 */
++		if (!s->frame_end && !de->bit_copy_gptr->ptr) {
++			const size_t wxh = s->sps.pic_width_in_luma_samples *
++				s->sps.pic_height_in_luma_samples;
++			size_t bits_alloc;
++
++			/* Annex A gives a min compression of 2 @ lvl 3.1
++			 * (wxh <= 983040) and min 4 thereafter but avoid
++			 * the odity of 983041 having a lower limit than
++			 * 983040.
++			 * Multiply by 3/2 for 4:2:0
++			 */
++			bits_alloc = wxh < 983040 ? wxh * 3 / 4 :
++				wxh < 983040 * 2 ? 983040 * 3 / 4 :
++				wxh * 3 / 8;
++			bits_alloc = round_up_size(bits_alloc);
++
++			if (gptr_alloc(dev, de->bit_copy_gptr,
++				       bits_alloc,
++				       DMA_ATTR_FORCE_CONTIGUOUS) != 0) {
++				v4l2_err(&dev->v4l2_dev,
++					 "Unable to alloc buf (%d) for bit copy\n",
++					 bits_alloc);
++				goto fail;
++			}
++			v4l2_info(&dev->v4l2_dev,
++				  "Alloc buf (%d) for bit copy OK\n",
++				  bits_alloc);
++		}
++	}
++
++	// Pre calc a few things
++	s->src_addr =
++		!s->frame_end ?
++			0 :
++			vb2_dma_contig_plane_dma_addr(&run->src->vb2_buf, 0);
++	s->src_buf = s->src_addr != 0 ? NULL :
++					vb2_plane_vaddr(&run->src->vb2_buf, 0);
++	if (!s->src_addr && !s->src_buf) {
++		v4l2_err(&dev->v4l2_dev, "Failed to map src buffer\n");
++		goto fail;
++	}
++
++	s->sh = sh;
++	s->slice_qp = 26 + s->pps.init_qp_minus26 + s->sh->slice_qp_delta;
++	s->max_num_merge_cand = sh->slice_type == HEVC_SLICE_I ?
++					0 :
++					(5 - sh->five_minus_max_num_merge_cand);
++	// * SH DSS flag invented by me - but clearly needed
++	s->dependent_slice_segment_flag =
++		((sh->flags &
++		  V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT) != 0);
++
++	s->nb_refs[0] = (sh->slice_type == HEVC_SLICE_I) ?
++				0 :
++				sh->num_ref_idx_l0_active_minus1 + 1;
++	s->nb_refs[1] = (sh->slice_type != HEVC_SLICE_B) ?
++				0 :
++				sh->num_ref_idx_l1_active_minus1 + 1;
++
++	if (s->sps.flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED)
++		populate_scaling_factors(run, de, s);
++
++	ctb_addr_ts = s->ctb_addr_rs_to_ts[sh->slice_segment_addr];
++
++	if ((s->pps.flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED))
++		wpp_decode_slice(de, s, sh, ctb_addr_ts);
++	else
++		decode_slice(de, s, sh, ctb_addr_ts);
++
++	if (!s->frame_end)
++		return;
++
++	// Frame end
++	memset(dpb_q_aux, 0,
++	       sizeof(*dpb_q_aux) * V4L2_HEVC_DPB_ENTRIES_NUM_MAX);
++	/*
++	 * Need Aux ents for all (ref) DPB ents if temporal MV could
++	 * be enabled for any pic
++	 * ** At the moment we have aux ents for all pics whether or not
++	 *    they are ref
++	 */
++	use_aux = ((s->sps.flags &
++		  V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED) != 0);
++
++	// Locate ref frames
++	// At least in the current implementation this is constant across all
++	// slices. If this changes we will need idx mapping code.
++	// Uses sh so here rather than trigger
++
++	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
++
++	if (!vq) {
++		v4l2_err(&dev->v4l2_dev, "VQ gone!\n");
++		goto fail;
++	}
++
++	//        v4l2_info(&dev->v4l2_dev, "rpivid_h265_end of frame\n");
++	if (frame_end(dev, de, s))
++		goto fail;
++
++	for (i = 0; i < sh->num_active_dpb_entries; ++i) {
++		int buffer_index =
++			vb2_find_timestamp(vq, sh->dpb[i].timestamp, 0);
++		struct vb2_buffer *buf = buffer_index < 0 ?
++					NULL :
++					vb2_get_buffer(vq, buffer_index);
++
++		if (!buf) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Missing DPB ent %d, timestamp=%lld, index=%d\n",
++				  i, (long long)sh->dpb[i].timestamp,
++				  buffer_index);
++			continue;
++		}
++
++		if (use_aux) {
++			dpb_q_aux[i] = aux_q_ref(ctx,
++						 ctx->aux_ents[buffer_index]);
++			if (!dpb_q_aux[i])
++				v4l2_warn(&dev->v4l2_dev,
++					  "Missing DPB AUX ent %d index=%d\n",
++					  i, buffer_index);
++		}
++
++		de->ref_addrs[i] =
++			vb2_dma_contig_plane_dma_addr(buf, 0);
++	}
++
++	// Move DPB from temp
++	for (i = 0; i != V4L2_HEVC_DPB_ENTRIES_NUM_MAX; ++i) {
++		aux_q_release(ctx, &s->ref_aux[i]);
++		s->ref_aux[i] = dpb_q_aux[i];
++	}
++	// Unref the old frame aux too - it is either in the DPB or not
++	// now
++	aux_q_release(ctx, &s->frame_aux);
++
++	if (use_aux) {
++		// New frame so new aux ent
++		// ??? Do we need this if non-ref ??? can we tell
++		s->frame_aux = aux_q_new(ctx, run->dst->vb2_buf.index);
++
++		if (!s->frame_aux) {
++			v4l2_err(&dev->v4l2_dev,
++				 "Failed to obtain aux storage for frame\n");
++			goto fail;
++		}
++
++		de->frame_aux = aux_q_ref(ctx, s->frame_aux);
++	}
++
++	if (de->dpbno_col != ~0U) {
++		if (de->dpbno_col >= sh->num_active_dpb_entries) {
++			v4l2_err(&dev->v4l2_dev,
++				 "Col ref index %d >= %d\n",
++				 de->dpbno_col,
++				 sh->num_active_dpb_entries);
++		} else {
++			// Standard requires that the col pic is
++			// constant for the duration of the pic
++			// (text of collocated_ref_idx in H265-2 2018
++			// 7.4.7.1)
++
++			// Spot the collocated ref in passing
++			de->col_aux = aux_q_ref(ctx,
++						dpb_q_aux[de->dpbno_col]);
++
++			if (!de->col_aux) {
++				v4l2_warn(&dev->v4l2_dev,
++					  "Missing DPB ent for col\n");
++				// Probably need to abort if this fails
++				// as P2 may explode on bad data
++				goto fail;
++			}
++		}
++	}
++
++	de->state = RPIVID_DECODE_PHASE1;
++	return;
++
++fail:
++	if (de)
++		// Actual error reporting happens in Trigger
++		de->state = s->frame_end ? RPIVID_DECODE_ERROR_DONE :
++					   RPIVID_DECODE_ERROR_CONTINUE;
++}
++
++//////////////////////////////////////////////////////////////////////////////
++// Handle PU and COEFF stream overflow
++
++// Returns:
++// -1  Phase 1 decode error
++//  0  OK
++// >0  Out of space (bitmask)
++
++#define STATUS_COEFF_EXHAUSTED	8
++#define STATUS_PU_EXHAUSTED	16
++
++static int check_status(const struct rpivid_dev *const dev)
++{
++	const u32 cfstatus = apb_read(dev, RPI_CFSTATUS);
++	const u32 cfnum = apb_read(dev, RPI_CFNUM);
++	u32 status = apb_read(dev, RPI_STATUS);
++
++	// Handle PU and COEFF stream overflow
++
++	// this is the definition of successful completion of phase 1
++	// it assures that status register is zero and all blocks in each tile
++	// have completed
++	if (cfstatus == cfnum)
++		return 0;	//No error
++
++	status &= (STATUS_PU_EXHAUSTED | STATUS_COEFF_EXHAUSTED);
++	if (status)
++		return status;
++
++	return -1;
++}
++
++static void cb_phase2(struct rpivid_dev *const dev, void *v)
++{
++	struct rpivid_dec_env *const de = v;
++	struct rpivid_ctx *const ctx = de->ctx;
++
++	xtrace_in(dev, de);
++
++	v4l2_m2m_cap_buf_return(dev->m2m_dev, ctx->fh.m2m_ctx, de->frame_buf,
++				VB2_BUF_STATE_DONE);
++	de->frame_buf = NULL;
++
++	/* Delete de before finish as finish might immediately trigger a reuse
++	 * of de
++	 */
++	dec_env_delete(de);
++
++	if (atomic_add_return(-1, &ctx->p2out) >= RPIVID_P2BUF_COUNT - 1) {
++		xtrace_fin(dev, de);
++		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++						 VB2_BUF_STATE_DONE);
++	}
++
++	xtrace_ok(dev, de);
++}
++
++static void phase2_claimed(struct rpivid_dev *const dev, void *v)
++{
++	struct rpivid_dec_env *const de = v;
++	unsigned int i;
++
++	xtrace_in(dev, de);
++
++	apb_write_vc_addr(dev, RPI_PURBASE, de->pu_base_vc);
++	apb_write_vc_len(dev, RPI_PURSTRIDE, de->pu_stride);
++	apb_write_vc_addr(dev, RPI_COEFFRBASE, de->coeff_base_vc);
++	apb_write_vc_len(dev, RPI_COEFFRSTRIDE, de->coeff_stride);
++
++	apb_write_vc_addr(dev, RPI_OUTYBASE, de->frame_addr);
++	apb_write_vc_addr(dev, RPI_OUTCBASE,
++			  de->frame_addr + de->frame_c_offset);
++	apb_write_vc_len(dev, RPI_OUTYSTRIDE, de->frame_stride);
++	apb_write_vc_len(dev, RPI_OUTCSTRIDE, de->frame_stride);
++
++	//    v4l2_info(&dev->v4l2_dev, "Frame: Y=%llx, C=%llx, Stride=%x\n",
++	//              de->frame_addr, de->frame_addr + de->frame_c_offset,
++	//              de->frame_stride);
++
++	for (i = 0; i < 16; i++) {
++		// Strides are in fact unused but fill in anyway
++		apb_write_vc_addr(dev, 0x9000 + 16 * i, de->ref_addrs[i]);
++		apb_write_vc_len(dev, 0x9004 + 16 * i, de->frame_stride);
++		apb_write_vc_addr(dev, 0x9008 + 16 * i,
++				  de->ref_addrs[i] + de->frame_c_offset);
++		apb_write_vc_len(dev, 0x900C + 16 * i, de->frame_stride);
++	}
++
++	apb_write(dev, RPI_CONFIG2, de->rpi_config2);
++	apb_write(dev, RPI_FRAMESIZE, de->rpi_framesize);
++	apb_write(dev, RPI_CURRPOC, de->rpi_currpoc);
++	//    v4l2_info(&dev->v4l2_dev, "Config2=%#x, FrameSize=%#x, POC=%#x\n",
++	//    de->rpi_config2, de->rpi_framesize, de->rpi_currpoc);
++
++	// collocated reads/writes
++	apb_write_vc_len(dev, RPI_COLSTRIDE,
++			 de->ctx->colmv_stride); // Read vals
++	apb_write_vc_len(dev, RPI_MVSTRIDE,
++			 de->ctx->colmv_stride); // Write vals
++	apb_write_vc_addr(dev, RPI_MVBASE,
++			  !de->frame_aux ? 0 : de->frame_aux->col.addr);
++	apb_write_vc_addr(dev, RPI_COLBASE,
++			  !de->col_aux ? 0 : de->col_aux->col.addr);
++
++	//v4l2_info(&dev->v4l2_dev,
++	//	   "Mv=%llx, Col=%llx, Stride=%x, Buf=%llx->%llx\n",
++	//	   de->rpi_mvbase, de->rpi_colbase, de->ctx->colmv_stride,
++	//	   de->ctx->colmvbuf.addr, de->ctx->colmvbuf.addr +
++	//	   de->ctx->colmvbuf.size);
++
++	rpivid_hw_irq_active2_irq(dev, &de->irq_ent, cb_phase2, de);
++
++	apb_write_final(dev, RPI_NUMROWS, de->pic_height_in_ctbs_y);
++
++	xtrace_ok(dev, de);
++}
++
++static void phase1_claimed(struct rpivid_dev *const dev, void *v);
++
++static void phase1_thread(struct rpivid_dev *const dev, void *v)
++{
++	struct rpivid_dec_env *const de = v;
++	struct rpivid_ctx *const ctx = de->ctx;
++
++	struct rpivid_gptr *const pu_gptr = ctx->pu_bufs + ctx->p2idx;
++	struct rpivid_gptr *const coeff_gptr = ctx->coeff_bufs + ctx->p2idx;
++
++	xtrace_in(dev, de);
++
++	if (de->p1_status & STATUS_PU_EXHAUSTED) {
++		if (gptr_realloc_new(dev, pu_gptr, next_size(pu_gptr->size))) {
++			v4l2_err(&dev->v4l2_dev,
++				 "%s: PU realloc (%#x) failed\n",
++				 __func__, pu_gptr->size);
++			goto fail;
++		}
++		v4l2_info(&dev->v4l2_dev, "%s: PU realloc (%#x) OK\n",
++			  __func__, pu_gptr->size);
++	}
++
++	if (de->p1_status & STATUS_COEFF_EXHAUSTED) {
++		if (gptr_realloc_new(dev, coeff_gptr,
++				     next_size(coeff_gptr->size))) {
++			v4l2_err(&dev->v4l2_dev,
++				 "%s: Coeff realloc (%#x) failed\n",
++				 __func__, coeff_gptr->size);
++			goto fail;
++		}
++		v4l2_info(&dev->v4l2_dev, "%s: Coeff realloc (%#x) OK\n",
++			  __func__, coeff_gptr->size);
++	}
++
++	phase1_claimed(dev, de);
++	xtrace_ok(dev, de);
++	return;
++
++fail:
++	dec_env_delete(de);
++	xtrace_fin(dev, de);
++	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++					 VB2_BUF_STATE_ERROR);
++	xtrace_fail(dev, de);
++}
++
++/* Always called in irq context (this is good) */
++static void cb_phase1(struct rpivid_dev *const dev, void *v)
++{
++	struct rpivid_dec_env *const de = v;
++	struct rpivid_ctx *const ctx = de->ctx;
++
++	xtrace_in(dev, de);
++
++	de->p1_status = check_status(dev);
++	if (de->p1_status != 0) {
++		v4l2_info(&dev->v4l2_dev, "%s: Post wait: %#x\n",
++			  __func__, de->p1_status);
++
++		if (de->p1_status < 0)
++			goto fail;
++
++		/* Need to realloc - push onto a thread rather than IRQ */
++		rpivid_hw_irq_active1_thread(dev, &de->irq_ent,
++					     phase1_thread, de);
++		return;
++	}
++
++	/* After the frame-buf is detached it must be returned but from
++	 * this point onward (phase2_claimed, cb_phase2) there are no error
++	 * paths so the return at the end of cb_phase2 is all that is needed
++	 */
++	de->frame_buf = v4l2_m2m_cap_buf_detach(dev->m2m_dev, ctx->fh.m2m_ctx);
++	if (!de->frame_buf) {
++		v4l2_err(&dev->v4l2_dev, "%s: No detached buffer\n", __func__);
++		goto fail;
++	}
++
++	ctx->p2idx =
++		(ctx->p2idx + 1 >= RPIVID_P2BUF_COUNT) ? 0 : ctx->p2idx + 1;
++
++	// Enable the next setup if our Q isn't too big
++	if (atomic_add_return(1, &ctx->p2out) < RPIVID_P2BUF_COUNT) {
++		xtrace_fin(dev, de);
++		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++						 VB2_BUF_STATE_DONE);
++	}
++
++	rpivid_hw_irq_active2_claim(dev, &de->irq_ent, phase2_claimed, de);
++
++	xtrace_ok(dev, de);
++	return;
++
++fail:
++	dec_env_delete(de);
++	xtrace_fin(dev, de);
++	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++					 VB2_BUF_STATE_ERROR);
++	xtrace_fail(dev, de);
++}
++
++static void phase1_claimed(struct rpivid_dev *const dev, void *v)
++{
++	struct rpivid_dec_env *const de = v;
++	struct rpivid_ctx *const ctx = de->ctx;
++
++	const struct rpivid_gptr * const pu_gptr = ctx->pu_bufs + ctx->p2idx;
++	const struct rpivid_gptr * const coeff_gptr = ctx->coeff_bufs +
++						      ctx->p2idx;
++
++	xtrace_in(dev, de);
++
++	de->pu_base_vc = pu_gptr->addr;
++	de->pu_stride =
++		ALIGN_DOWN(pu_gptr->size / de->pic_height_in_ctbs_y, 64);
++
++	de->coeff_base_vc = coeff_gptr->addr;
++	de->coeff_stride =
++		ALIGN_DOWN(coeff_gptr->size / de->pic_height_in_ctbs_y, 64);
++
++	apb_write_vc_addr(dev, RPI_PUWBASE, de->pu_base_vc);
++	apb_write_vc_len(dev, RPI_PUWSTRIDE, de->pu_stride);
++	apb_write_vc_addr(dev, RPI_COEFFWBASE, de->coeff_base_vc);
++	apb_write_vc_len(dev, RPI_COEFFWSTRIDE, de->coeff_stride);
++
++	// Trigger command FIFO
++	apb_write(dev, RPI_CFNUM, de->cmd_len);
++
++	// Claim irq
++	rpivid_hw_irq_active1_irq(dev, &de->irq_ent, cb_phase1, de);
++
++	// And start the h/w
++	apb_write_vc_addr_final(dev, RPI_CFBASE, de->cmd_copy_gptr->addr);
++
++	xtrace_ok(dev, de);
++}
++
++static void dec_state_delete(struct rpivid_ctx *const ctx)
++{
++	unsigned int i;
++	struct rpivid_dec_state *const s = ctx->state;
++
++	if (!s)
++		return;
++	ctx->state = NULL;
++
++	free_ps_info(s);
++
++	for (i = 0; i != HEVC_MAX_REFS; ++i)
++		aux_q_release(ctx, &s->ref_aux[i]);
++	aux_q_release(ctx, &s->frame_aux);
++
++	kfree(s);
++}
++
++static void rpivid_h265_stop(struct rpivid_ctx *ctx)
++{
++	struct rpivid_dev *const dev = ctx->dev;
++	unsigned int i;
++
++	v4l2_info(&dev->v4l2_dev, "%s\n", __func__);
++
++	dec_env_uninit(ctx);
++	dec_state_delete(ctx);
++
++	// dec_env & state must be killed before this to release the buffer to
++	// the free pool
++	aux_q_uninit(ctx);
++
++	for (i = 0; i != ARRAY_SIZE(ctx->bitbufs); ++i)
++		gptr_free(dev, ctx->bitbufs + i);
++	for (i = 0; i != ARRAY_SIZE(ctx->cmdbufs); ++i)
++		gptr_free(dev, ctx->cmdbufs + i);
++	for (i = 0; i != ARRAY_SIZE(ctx->pu_bufs); ++i)
++		gptr_free(dev, ctx->pu_bufs + i);
++	for (i = 0; i != ARRAY_SIZE(ctx->coeff_bufs); ++i)
++		gptr_free(dev, ctx->coeff_bufs + i);
++}
++
++static int rpivid_h265_start(struct rpivid_ctx *ctx)
++{
++	struct rpivid_dev *const dev = ctx->dev;
++	unsigned int i;
++
++	unsigned int w = ctx->dst_fmt.width;
++	unsigned int h = ctx->dst_fmt.height;
++	unsigned int wxh;
++	size_t pu_alloc;
++	size_t coeff_alloc;
++
++	// Generate a sanitised WxH for memory alloc
++	// Assume HD if unset
++	if (w == 0)
++		w = 1920;
++	if (w > 4096)
++		w = 4096;
++	if (h == 0)
++		w = 1088;
++	if (h > 4096)
++		h = 4096;
++	wxh = w * h;
++
++	v4l2_info(&dev->v4l2_dev, "%s: (%dx%d)\n", __func__,
++		  ctx->dst_fmt.width, ctx->dst_fmt.height);
++
++	ctx->dec0 = NULL;
++	ctx->state = kzalloc(sizeof(*ctx->state), GFP_KERNEL);
++	if (!ctx->state) {
++		v4l2_err(&dev->v4l2_dev, "Failed to allocate decode state\n");
++		goto fail;
++	}
++
++	if (dec_env_init(ctx) != 0) {
++		v4l2_err(&dev->v4l2_dev, "Failed to allocate decode envs\n");
++		goto fail;
++	}
++
++	// 16k is plenty for most purposes but we will realloc if needed
++	for (i = 0; i != ARRAY_SIZE(ctx->cmdbufs); ++i) {
++		if (gptr_alloc(dev, ctx->cmdbufs + i, 0x4000,
++			       DMA_ATTR_FORCE_CONTIGUOUS))
++			goto fail;
++	}
++
++	// Finger in the air PU & Coeff alloc
++	// Will be realloced if too small
++	coeff_alloc = round_up_size(wxh);
++	pu_alloc = round_up_size(wxh / 4);
++	for (i = 0; i != ARRAY_SIZE(ctx->pu_bufs); ++i) {
++		// Don't actually need a kernel mapping here
++		if (gptr_alloc(dev, ctx->pu_bufs + i, pu_alloc,
++			       DMA_ATTR_FORCE_CONTIGUOUS |
++					DMA_ATTR_NO_KERNEL_MAPPING))
++			goto fail;
++		if (gptr_alloc(dev, ctx->coeff_bufs + i, coeff_alloc,
++			       DMA_ATTR_FORCE_CONTIGUOUS |
++					DMA_ATTR_NO_KERNEL_MAPPING))
++			goto fail;
++	}
++	aux_q_init(ctx);
++
++	return 0;
++
++fail:
++	rpivid_h265_stop(ctx);
++	return -ENOMEM;
++}
++
++static void rpivid_h265_trigger(struct rpivid_ctx *ctx)
++{
++	struct rpivid_dev *const dev = ctx->dev;
++	struct rpivid_dec_env *const de = ctx->dec0;
++
++	xtrace_in(dev, de);
++
++	switch (!de ? RPIVID_DECODE_ERROR_CONTINUE : de->state) {
++	case RPIVID_DECODE_SLICE_START:
++		de->state = RPIVID_DECODE_SLICE_CONTINUE;
++	/* FALLTHRU */
++	case RPIVID_DECODE_SLICE_CONTINUE:
++		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++						 VB2_BUF_STATE_DONE);
++		break;
++	default:
++		v4l2_err(&dev->v4l2_dev, "%s: Unexpected state: %d\n", __func__,
++			 de->state);
++	/* FALLTHRU */
++	case RPIVID_DECODE_ERROR_DONE:
++		ctx->dec0 = NULL;
++		dec_env_delete(de);
++	/* FALLTHRU */
++	case RPIVID_DECODE_ERROR_CONTINUE:
++		xtrace_fin(dev, de);
++		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++						 VB2_BUF_STATE_ERROR);
++		break;
++	case RPIVID_DECODE_PHASE1:
++		ctx->dec0 = NULL;
++		rpivid_hw_irq_active1_claim(dev, &de->irq_ent, phase1_claimed,
++					    de);
++		break;
++	}
++
++	xtrace_ok(dev, de);
++}
++
++struct rpivid_dec_ops rpivid_dec_ops_h265 = {
++	.setup = rpivid_h265_setup,
++	.start = rpivid_h265_start,
++	.stop = rpivid_h265_stop,
++	.trigger = rpivid_h265_trigger,
++};
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid_hw.c
+@@ -0,0 +1,321 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++#include <linux/clk.h>
++#include <linux/component.h>
++#include <linux/dma-mapping.h>
++#include <linux/interrupt.h>
++#include <linux/io.h>
++#include <linux/of_reserved_mem.h>
++#include <linux/of_device.h>
++#include <linux/of_platform.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++#include <linux/reset.h>
++
++#include <media/videobuf2-core.h>
++#include <media/v4l2-mem2mem.h>
++
++#include "rpivid.h"
++#include "rpivid_hw.h"
++
++static void pre_irq(struct rpivid_dev *dev, struct rpivid_hw_irq_ent *ient,
++		    rpivid_irq_callback cb, void *v,
++		    struct rpivid_hw_irq_ctrl *ictl)
++{
++	unsigned long flags;
++
++	if (ictl->irq) {
++		v4l2_err(&dev->v4l2_dev, "Attempt to claim IRQ when already claimed\n");
++		return;
++	}
++
++	ient->cb = cb;
++	ient->v = v;
++
++	// Not sure this lock is actually required
++	spin_lock_irqsave(&ictl->lock, flags);
++	ictl->irq = ient;
++	spin_unlock_irqrestore(&ictl->lock, flags);
++}
++
++static void sched_claim(struct rpivid_dev * const dev,
++			struct rpivid_hw_irq_ctrl * const ictl)
++{
++	for (;;) {
++		struct rpivid_hw_irq_ent *ient = NULL;
++		unsigned long flags;
++
++		spin_lock_irqsave(&ictl->lock, flags);
++
++		if (--ictl->no_sched <= 0) {
++			ient = ictl->claim;
++			if (!ictl->irq && ient) {
++				ictl->claim = ient->next;
++				ictl->no_sched = 1;
++			}
++		}
++
++		spin_unlock_irqrestore(&ictl->lock, flags);
++
++		if (!ient)
++			break;
++
++		ient->cb(dev, ient->v);
++	}
++}
++
++/* Should only ever be called from its own IRQ cb so no lock required */
++static void pre_thread(struct rpivid_dev *dev,
++		       struct rpivid_hw_irq_ent *ient,
++		       rpivid_irq_callback cb, void *v,
++		       struct rpivid_hw_irq_ctrl *ictl)
++{
++	ient->cb = cb;
++	ient->v = v;
++	ictl->irq = ient;
++	ictl->thread_reqed = true;
++	ictl->no_sched++;
++}
++
++// Called in irq context
++static void do_irq(struct rpivid_dev * const dev,
++		   struct rpivid_hw_irq_ctrl * const ictl)
++{
++	struct rpivid_hw_irq_ent *ient;
++	unsigned long flags;
++
++	spin_lock_irqsave(&ictl->lock, flags);
++	ient = ictl->irq;
++	if (ient) {
++		ictl->no_sched++;
++		ictl->irq = NULL;
++	}
++	spin_unlock_irqrestore(&ictl->lock, flags);
++
++	if (ient) {
++		ient->cb(dev, ient->v);
++
++		sched_claim(dev, ictl);
++	}
++}
++
++static void do_claim(struct rpivid_dev * const dev,
++		     struct rpivid_hw_irq_ent *ient,
++		     const rpivid_irq_callback cb, void * const v,
++		     struct rpivid_hw_irq_ctrl * const ictl)
++{
++	unsigned long flags;
++
++	ient->next = NULL;
++	ient->cb = cb;
++	ient->v = v;
++
++	spin_lock_irqsave(&ictl->lock, flags);
++
++	if (ictl->claim) {
++		// If we have a Q then add to end
++		ictl->tail->next = ient;
++		ictl->tail = ient;
++		ient = NULL;
++	} else if (ictl->no_sched || ictl->irq) {
++		// Empty Q but other activity in progress so Q
++		ictl->claim = ient;
++		ictl->tail = ient;
++		ient = NULL;
++	} else {
++		// Nothing else going on - schedule immediately and
++		// prevent anything else scheduling claims
++		ictl->no_sched = 1;
++	}
++
++	spin_unlock_irqrestore(&ictl->lock, flags);
++
++	if (ient) {
++		ient->cb(dev, ient->v);
++
++		sched_claim(dev, ictl);
++	}
++}
++
++static void ictl_init(struct rpivid_hw_irq_ctrl * const ictl)
++{
++	spin_lock_init(&ictl->lock);
++	ictl->claim = NULL;
++	ictl->tail = NULL;
++	ictl->irq = NULL;
++	ictl->no_sched = 0;
++}
++
++static void ictl_uninit(struct rpivid_hw_irq_ctrl * const ictl)
++{
++	// Nothing to do
++}
++
++#if !OPT_DEBUG_POLL_IRQ
++static irqreturn_t rpivid_irq_irq(int irq, void *data)
++{
++	struct rpivid_dev * const dev = data;
++	__u32 ictrl;
++
++	ictrl = irq_read(dev, ARG_IC_ICTRL);
++	if (!(ictrl & ARG_IC_ICTRL_ALL_IRQ_MASK)) {
++		v4l2_warn(&dev->v4l2_dev, "IRQ but no IRQ bits set\n");
++		return IRQ_NONE;
++	}
++
++	// Cancel any/all irqs
++	irq_write(dev, ARG_IC_ICTRL, ictrl & ~ARG_IC_ICTRL_SET_ZERO_MASK);
++
++	// Service Active2 before Active1 so Phase 1 can transition to Phase 2
++	// without delay
++	if (ictrl & ARG_IC_ICTRL_ACTIVE2_INT_SET)
++		do_irq(dev, &dev->ic_active2);
++	if (ictrl & ARG_IC_ICTRL_ACTIVE1_INT_SET)
++		do_irq(dev, &dev->ic_active1);
++
++	return dev->ic_active1.thread_reqed || dev->ic_active2.thread_reqed ?
++		IRQ_WAKE_THREAD : IRQ_HANDLED;
++}
++
++static void do_thread(struct rpivid_dev * const dev,
++		      struct rpivid_hw_irq_ctrl *const ictl)
++{
++	unsigned long flags;
++	struct rpivid_hw_irq_ent *ient = NULL;
++
++	spin_lock_irqsave(&ictl->lock, flags);
++
++	if (ictl->thread_reqed) {
++		ient = ictl->irq;
++		ictl->thread_reqed = false;
++		ictl->irq = NULL;
++	}
++
++	spin_unlock_irqrestore(&ictl->lock, flags);
++
++	if (ient) {
++		ient->cb(dev, ient->v);
++
++		sched_claim(dev, ictl);
++	}
++}
++
++static irqreturn_t rpivid_irq_thread(int irq, void *data)
++{
++	struct rpivid_dev * const dev = data;
++
++	do_thread(dev, &dev->ic_active1);
++	do_thread(dev, &dev->ic_active2);
++
++	return IRQ_HANDLED;
++}
++#endif
++
++/* May only be called from Active1 CB
++ * IRQs should not be expected until execution continues in the cb
++ */
++void rpivid_hw_irq_active1_thread(struct rpivid_dev *dev,
++				  struct rpivid_hw_irq_ent *ient,
++				  rpivid_irq_callback thread_cb, void *ctx)
++{
++	pre_thread(dev, ient, thread_cb, ctx, &dev->ic_active1);
++}
++
++void rpivid_hw_irq_active1_claim(struct rpivid_dev *dev,
++				 struct rpivid_hw_irq_ent *ient,
++				 rpivid_irq_callback ready_cb, void *ctx)
++{
++	do_claim(dev, ient, ready_cb, ctx, &dev->ic_active1);
++}
++
++void rpivid_hw_irq_active1_irq(struct rpivid_dev *dev,
++			       struct rpivid_hw_irq_ent *ient,
++			       rpivid_irq_callback irq_cb, void *ctx)
++{
++	pre_irq(dev, ient, irq_cb, ctx, &dev->ic_active1);
++}
++
++void rpivid_hw_irq_active2_claim(struct rpivid_dev *dev,
++				 struct rpivid_hw_irq_ent *ient,
++				 rpivid_irq_callback ready_cb, void *ctx)
++{
++	do_claim(dev, ient, ready_cb, ctx, &dev->ic_active2);
++}
++
++void rpivid_hw_irq_active2_irq(struct rpivid_dev *dev,
++			       struct rpivid_hw_irq_ent *ient,
++			       rpivid_irq_callback irq_cb, void *ctx)
++{
++	pre_irq(dev, ient, irq_cb, ctx, &dev->ic_active2);
++}
++
++int rpivid_hw_probe(struct rpivid_dev *dev)
++{
++	struct resource *res;
++	__u32 irq_stat;
++	int irq_dec;
++	int ret = 0;
++
++	ictl_init(&dev->ic_active1);
++	ictl_init(&dev->ic_active2);
++
++	res = platform_get_resource_byname(dev->pdev, IORESOURCE_MEM, "intc");
++	if (!res)
++		return -ENODEV;
++
++	dev->base_irq = devm_ioremap(dev->dev, res->start, resource_size(res));
++	if (IS_ERR(dev->base_irq))
++		return PTR_ERR(dev->base_irq);
++
++	res = platform_get_resource_byname(dev->pdev, IORESOURCE_MEM, "hevc");
++	if (!res)
++		return -ENODEV;
++
++	dev->base_h265 = devm_ioremap(dev->dev, res->start, resource_size(res));
++	if (IS_ERR(dev->base_h265))
++		return PTR_ERR(dev->base_h265);
++
++	dev->clock = devm_clk_get(&dev->pdev->dev, "hevc");
++	if (IS_ERR(dev->clock))
++		return PTR_ERR(dev->clock);
++
++	// Disable IRQs & reset anything pending
++	irq_write(dev, 0,
++		  ARG_IC_ICTRL_ACTIVE1_EN_SET | ARG_IC_ICTRL_ACTIVE2_EN_SET);
++	irq_stat = irq_read(dev, 0);
++	irq_write(dev, 0, irq_stat);
++
++#if !OPT_DEBUG_POLL_IRQ
++	irq_dec = platform_get_irq(dev->pdev, 0);
++	if (irq_dec <= 0)
++		return irq_dec;
++	ret = devm_request_threaded_irq(dev->dev, irq_dec,
++					rpivid_irq_irq,
++					rpivid_irq_thread,
++					0, dev_name(dev->dev), dev);
++	if (ret) {
++		dev_err(dev->dev, "Failed to request IRQ - %d\n", ret);
++
++		return ret;
++	}
++#endif
++	return ret;
++}
++
++void rpivid_hw_remove(struct rpivid_dev *dev)
++{
++	// IRQ auto freed on unload so no need to do it here
++	ictl_uninit(&dev->ic_active1);
++	ictl_uninit(&dev->ic_active2);
++}
++
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid_hw.h
+@@ -0,0 +1,300 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#ifndef _RPIVID_HW_H_
++#define _RPIVID_HW_H_
++
++struct rpivid_hw_irq_ent {
++	struct rpivid_hw_irq_ent *next;
++	rpivid_irq_callback cb;
++	void *v;
++};
++
++/* Phase 1 Register offsets */
++
++#define RPI_SPS0 0
++#define RPI_SPS1 4
++#define RPI_PPS 8
++#define RPI_SLICE 12
++#define RPI_TILESTART 16
++#define RPI_TILEEND 20
++#define RPI_SLICESTART 24
++#define RPI_MODE 28
++#define RPI_LEFT0 32
++#define RPI_LEFT1 36
++#define RPI_LEFT2 40
++#define RPI_LEFT3 44
++#define RPI_QP 48
++#define RPI_CONTROL 52
++#define RPI_STATUS 56
++#define RPI_VERSION 60
++#define RPI_BFBASE 64
++#define RPI_BFNUM 68
++#define RPI_BFCONTROL 72
++#define RPI_BFSTATUS 76
++#define RPI_PUWBASE 80
++#define RPI_PUWSTRIDE 84
++#define RPI_COEFFWBASE 88
++#define RPI_COEFFWSTRIDE 92
++#define RPI_SLICECMDS 96
++#define RPI_BEGINTILEEND 100
++#define RPI_TRANSFER 104
++#define RPI_CFBASE 108
++#define RPI_CFNUM 112
++#define RPI_CFSTATUS 116
++
++/* Phase 2 Register offsets */
++
++#define RPI_PURBASE 0x8000
++#define RPI_PURSTRIDE 0x8004
++#define RPI_COEFFRBASE 0x8008
++#define RPI_COEFFRSTRIDE 0x800C
++#define RPI_NUMROWS 0x8010
++#define RPI_CONFIG2 0x8014
++#define RPI_OUTYBASE 0x8018
++#define RPI_OUTYSTRIDE 0x801C
++#define RPI_OUTCBASE 0x8020
++#define RPI_OUTCSTRIDE 0x8024
++#define RPI_STATUS2 0x8028
++#define RPI_FRAMESIZE 0x802C
++#define RPI_MVBASE 0x8030
++#define RPI_MVSTRIDE 0x8034
++#define RPI_COLBASE 0x8038
++#define RPI_COLSTRIDE 0x803C
++#define RPI_CURRPOC 0x8040
++
++/*
++ * Write a general register value
++ * Order is unimportant
++ */
++static inline void apb_write(const struct rpivid_dev * const dev,
++			     const unsigned int offset, const u32 val)
++{
++	writel_relaxed(val, dev->base_h265 + offset);
++}
++
++/* Write the final register value that actually starts the phase */
++static inline void apb_write_final(const struct rpivid_dev * const dev,
++				   const unsigned int offset, const u32 val)
++{
++	writel(val, dev->base_h265 + offset);
++}
++
++static inline u32 apb_read(const struct rpivid_dev * const dev,
++			   const unsigned int offset)
++{
++	return readl(dev->base_h265 + offset);
++}
++
++static inline void irq_write(const struct rpivid_dev * const dev,
++			     const unsigned int offset, const u32 val)
++{
++	writel(val, dev->base_irq + offset);
++}
++
++static inline u32 irq_read(const struct rpivid_dev * const dev,
++			   const unsigned int offset)
++{
++	return readl(dev->base_irq + offset);
++}
++
++static inline void apb_write_vc_addr(const struct rpivid_dev * const dev,
++				     const unsigned int offset,
++				     const dma_addr_t a)
++{
++	apb_write(dev, offset, (u32)(a >> 6));
++}
++
++static inline void apb_write_vc_addr_final(const struct rpivid_dev * const dev,
++					   const unsigned int offset,
++					   const dma_addr_t a)
++{
++	apb_write_final(dev, offset, (u32)(a >> 6));
++}
++
++static inline void apb_write_vc_len(const struct rpivid_dev * const dev,
++				    const unsigned int offset,
++				    const unsigned int x)
++{
++	apb_write(dev, offset, (x + 63) >> 6);
++}
++
++/* *ARG_IC_ICTRL - Interrupt control for ARGON Core*
++ * Offset (byte space) = 40'h2b10000
++ * Physical Address (byte space) = 40'h7eb10000
++ * Verilog Macro Address = `ARG_IC_REG_START + `ARGON_INTCTRL_ICTRL
++ * Reset Value = 32'b100x100x_100xxxxx_xxxxxxx0_x100x100
++ * Access = RW (32-bit only)
++ * Interrupt control logic for ARGON Core.
++ */
++#define ARG_IC_ICTRL 0
++
++/* acc=LWC ACTIVE1_INT FIELD ACCESS: LWC
++ *
++ * Interrupt 1
++ * This is set and held when an hevc_active1 interrupt edge is detected
++ * The polarity of the edge is set by the ACTIVE1_EDGE field
++ * Write a 1 to this bit to clear down the latched interrupt
++ * The latched interrupt is only enabled out onto the interrupt line if
++ * ACTIVE1_EN is set
++ * Reset value is *0* decimal.
++ */
++#define ARG_IC_ICTRL_ACTIVE1_INT_SET		BIT(0)
++
++/* ACTIVE1_EDGE Sets the polarity of the interrupt edge detection logic
++ * This logic detects edges of the hevc_active1 line from the argon core
++ * 0 = negedge, 1 = posedge
++ * Reset value is *0* decimal.
++ */
++#define ARG_IC_ICTRL_ACTIVE1_EDGE_SET		BIT(1)
++
++/* ACTIVE1_EN Enables ACTIVE1_INT out onto the argon interrupt line.
++ * If this isn't set, the interrupt logic will work but no interrupt will be
++ * set to the interrupt controller
++ * Reset value is *1* decimal.
++ *
++ * [JC] The above appears to be a lie - if unset then b0 is never set
++ */
++#define ARG_IC_ICTRL_ACTIVE1_EN_SET		BIT(2)
++
++/* acc=RO ACTIVE1_STATUS FIELD ACCESS: RO
++ *
++ * The current status of the hevc_active1 signal
++ */
++#define ARG_IC_ICTRL_ACTIVE1_STATUS_SET		BIT(3)
++
++/* acc=LWC ACTIVE2_INT FIELD ACCESS: LWC
++ *
++ * Interrupt 2
++ * This is set and held when an hevc_active2 interrupt edge is detected
++ * The polarity of the edge is set by the ACTIVE2_EDGE field
++ * Write a 1 to this bit to clear down the latched interrupt
++ * The latched interrupt is only enabled out onto the interrupt line if
++ * ACTIVE2_EN is set
++ * Reset value is *0* decimal.
++ */
++#define ARG_IC_ICTRL_ACTIVE2_INT_SET		BIT(4)
++
++/* ACTIVE2_EDGE Sets the polarity of the interrupt edge detection logic
++ * This logic detects edges of the hevc_active2 line from the argon core
++ * 0 = negedge, 1 = posedge
++ * Reset value is *0* decimal.
++ */
++#define ARG_IC_ICTRL_ACTIVE2_EDGE_SET		BIT(5)
++
++/* ACTIVE2_EN Enables ACTIVE2_INT out onto the argon interrupt line.
++ * If this isn't set, the interrupt logic will work but no interrupt will be
++ * set to the interrupt controller
++ * Reset value is *1* decimal.
++ */
++#define ARG_IC_ICTRL_ACTIVE2_EN_SET		BIT(6)
++
++/* acc=RO ACTIVE2_STATUS FIELD ACCESS: RO
++ *
++ * The current status of the hevc_active2 signal
++ */
++#define ARG_IC_ICTRL_ACTIVE2_STATUS_SET		BIT(7)
++
++/* TEST_INT Forces the argon int high for test purposes.
++ * Reset value is *0* decimal.
++ */
++#define ARG_IC_ICTRL_TEST_INT			BIT(8)
++#define ARG_IC_ICTRL_SPARE			BIT(9)
++
++/* acc=RO VP9_INTERRUPT_STATUS FIELD ACCESS: RO
++ *
++ * The current status of the vp9_interrupt signal
++ */
++#define ARG_IC_ICTRL_VP9_INTERRUPT_STATUS	BIT(10)
++
++/* AIO_INT_ENABLE 1 = Or the AIO int in with the Argon int so the VPU can see
++ * it
++ * 0 = the AIO int is masked. (It should still be connected to the GIC though).
++ */
++#define ARG_IC_ICTRL_AIO_INT_ENABLE		BIT(20)
++#define ARG_IC_ICTRL_H264_ACTIVE_INT		BIT(21)
++#define ARG_IC_ICTRL_H264_ACTIVE_EDGE		BIT(22)
++#define ARG_IC_ICTRL_H264_ACTIVE_EN		BIT(23)
++#define ARG_IC_ICTRL_H264_ACTIVE_STATUS		BIT(24)
++#define ARG_IC_ICTRL_H264_INTERRUPT_INT		BIT(25)
++#define ARG_IC_ICTRL_H264_INTERRUPT_EDGE	BIT(26)
++#define ARG_IC_ICTRL_H264_INTERRUPT_EN		BIT(27)
++
++/* acc=RO H264_INTERRUPT_STATUS FIELD ACCESS: RO
++ *
++ * The current status of the h264_interrupt signal
++ */
++#define ARG_IC_ICTRL_H264_INTERRUPT_STATUS	BIT(28)
++
++/* acc=LWC VP9_INTERRUPT_INT FIELD ACCESS: LWC
++ *
++ * Interrupt 1
++ * This is set and held when an vp9_interrupt interrupt edge is detected
++ * The polarity of the edge is set by the VP9_INTERRUPT_EDGE field
++ * Write a 1 to this bit to clear down the latched interrupt
++ * The latched interrupt is only enabled out onto the interrupt line if
++ * VP9_INTERRUPT_EN is set
++ * Reset value is *0* decimal.
++ */
++#define ARG_IC_ICTRL_VP9_INTERRUPT_INT		BIT(29)
++
++/* VP9_INTERRUPT_EDGE Sets the polarity of the interrupt edge detection logic
++ * This logic detects edges of the vp9_interrupt line from the argon h264 core
++ * 0 = negedge, 1 = posedge
++ * Reset value is *0* decimal.
++ */
++#define ARG_IC_ICTRL_VP9_INTERRUPT_EDGE		BIT(30)
++
++/* VP9_INTERRUPT_EN Enables VP9_INTERRUPT_INT out onto the argon interrupt line.
++ * If this isn't set, the interrupt logic will work but no interrupt will be
++ * set to the interrupt controller
++ * Reset value is *1* decimal.
++ */
++#define ARG_IC_ICTRL_VP9_INTERRUPT_EN		BIT(31)
++
++/* Bits 19:12, 11 reserved - read ?, write 0 */
++#define ARG_IC_ICTRL_SET_ZERO_MASK		((0xff << 12) | BIT(11))
++
++/* All IRQ bits */
++#define ARG_IC_ICTRL_ALL_IRQ_MASK   (\
++		ARG_IC_ICTRL_VP9_INTERRUPT_INT  |\
++		ARG_IC_ICTRL_H264_INTERRUPT_INT |\
++		ARG_IC_ICTRL_ACTIVE1_INT_SET    |\
++		ARG_IC_ICTRL_ACTIVE2_INT_SET)
++
++/* Auto release once all CBs called */
++void rpivid_hw_irq_active1_claim(struct rpivid_dev *dev,
++				 struct rpivid_hw_irq_ent *ient,
++				 rpivid_irq_callback ready_cb, void *ctx);
++/* May only be called in claim cb */
++void rpivid_hw_irq_active1_irq(struct rpivid_dev *dev,
++			       struct rpivid_hw_irq_ent *ient,
++			       rpivid_irq_callback irq_cb, void *ctx);
++/* May only be called in irq cb */
++void rpivid_hw_irq_active1_thread(struct rpivid_dev *dev,
++				  struct rpivid_hw_irq_ent *ient,
++				  rpivid_irq_callback thread_cb, void *ctx);
++
++/* Auto release once all CBs called */
++void rpivid_hw_irq_active2_claim(struct rpivid_dev *dev,
++				 struct rpivid_hw_irq_ent *ient,
++				 rpivid_irq_callback ready_cb, void *ctx);
++/* May only be called in claim cb */
++void rpivid_hw_irq_active2_irq(struct rpivid_dev *dev,
++			       struct rpivid_hw_irq_ent *ient,
++			       rpivid_irq_callback irq_cb, void *ctx);
++
++int rpivid_hw_probe(struct rpivid_dev *dev);
++void rpivid_hw_remove(struct rpivid_dev *dev);
++
++#endif
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -0,0 +1,593 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#include <media/videobuf2-dma-contig.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-ioctl.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-mem2mem.h>
++
++#include "rpivid.h"
++#include "rpivid_video.h"
++#include "rpivid_dec.h"
++
++#define RPIVID_DECODE_SRC	BIT(0)
++#define RPIVID_DECODE_DST	BIT(1)
++
++#define RPIVID_MIN_WIDTH	16U
++#define RPIVID_MIN_HEIGHT	16U
++#define RPIVID_MAX_WIDTH	4096U
++#define RPIVID_MAX_HEIGHT	4096U
++
++static inline struct rpivid_ctx *rpivid_file2ctx(struct file *file)
++{
++	return container_of(file->private_data, struct rpivid_ctx, fh);
++}
++
++/* constrain x to y,y*2 */
++static inline unsigned int constrain2x(unsigned int x, unsigned int y)
++{
++	return (x < y) ?
++			y :
++			(x > y * 2) ? y : x;
++}
++
++int rpivid_prepare_src_format(struct v4l2_pix_format *pix_fmt)
++{
++	if (pix_fmt->pixelformat != V4L2_PIX_FMT_HEVC_SLICE)
++		return -EINVAL;
++
++	/* Zero bytes per line for encoded source. */
++	pix_fmt->bytesperline = 0;
++	/* Choose some minimum size since this can't be 0 */
++	pix_fmt->sizeimage = max_t(u32, SZ_1K, pix_fmt->sizeimage);
++	pix_fmt->field = V4L2_FIELD_NONE;
++	return 0;
++}
++
++int rpivid_prepare_dst_format(struct v4l2_pix_format *pix_fmt)
++{
++	unsigned int width = pix_fmt->width;
++	unsigned int height = pix_fmt->height;
++	unsigned int sizeimage = pix_fmt->sizeimage;
++	unsigned int bytesperline = pix_fmt->bytesperline;
++
++	switch (pix_fmt->pixelformat) {
++	/* For column formats set bytesperline to column height (stride2) */
++	case V4L2_PIX_FMT_NV12_COL128:
++		/* Width rounds up to columns */
++		width = ALIGN(min(width, RPIVID_MAX_WIDTH), 128);
++
++		/* 16 aligned height - not sure we even need that */
++		height = ALIGN(height, 16);
++		/* column height
++		 * Accept suggested shape if at least min & < 2 * min
++		 */
++		bytesperline = constrain2x(bytesperline, height * 3 / 2);
++
++		/* image size
++		 * Again allow plausible variation in case added padding is
++		 * required
++		 */
++		sizeimage = constrain2x(sizeimage, bytesperline * width);
++		break;
++
++	case V4L2_PIX_FMT_NV12_10_COL128:
++		/* width in pixels (3 pels = 4 bytes) rounded to 128 byte
++		 * columns
++		 */
++		width = ALIGN(((min(width, RPIVID_MAX_WIDTH) + 2) / 3), 32) * 3;
++
++		/* 16-aligned height. */
++		height = ALIGN(height, 16);
++
++		/* column height
++		 * Accept suggested shape if at least min & < 2 * min
++		 */
++		bytesperline = constrain2x(bytesperline, height * 3 / 2);
++
++		/* image size
++		 * Again allow plausible variation in case added padding is
++		 * required
++		 */
++		sizeimage = constrain2x(sizeimage,
++					bytesperline * width * 4 / 3);
++		break;
++
++	default:
++		return -EINVAL;
++	}
++
++	pix_fmt->width = width;
++	pix_fmt->height = height;
++
++	pix_fmt->field = V4L2_FIELD_NONE;
++	pix_fmt->bytesperline = bytesperline;
++	pix_fmt->sizeimage = sizeimage;
++	return 0;
++}
++
++static int rpivid_querycap(struct file *file, void *priv,
++			   struct v4l2_capability *cap)
++{
++	strscpy(cap->driver, RPIVID_NAME, sizeof(cap->driver));
++	strscpy(cap->card, RPIVID_NAME, sizeof(cap->card));
++	snprintf(cap->bus_info, sizeof(cap->bus_info),
++		 "platform:%s", RPIVID_NAME);
++
++	return 0;
++}
++
++static int rpivid_enum_fmt_vid_out(struct file *file, void *priv,
++				   struct v4l2_fmtdesc *f)
++{
++	// Input formats
++
++	// H.265 Slice only currently
++	if (f->index == 0) {
++		f->pixelformat = V4L2_PIX_FMT_HEVC_SLICE;
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++static int rpivid_hevc_validate_sps(const struct v4l2_ctrl_hevc_sps * const sps)
++{
++	const unsigned int ctb_log2_size_y =
++			sps->log2_min_luma_coding_block_size_minus3 + 3 +
++			sps->log2_diff_max_min_luma_coding_block_size;
++	const unsigned int min_tb_log2_size_y =
++			sps->log2_min_luma_transform_block_size_minus2 + 2;
++	const unsigned int max_tb_log2_size_y = min_tb_log2_size_y +
++			sps->log2_diff_max_min_luma_transform_block_size;
++
++	/* Local limitations */
++	if (sps->pic_width_in_luma_samples < 32 ||
++	    sps->pic_width_in_luma_samples > 4096)
++		return 0;
++	if (sps->pic_height_in_luma_samples < 32 ||
++	    sps->pic_height_in_luma_samples > 4096)
++		return 0;
++	if (!(sps->bit_depth_luma_minus8 == 0 ||
++	      sps->bit_depth_luma_minus8 == 2))
++		return 0;
++	if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8)
++		return 0;
++	if (sps->chroma_format_idc != 1)
++		return 0;
++
++	/*  Limits from H.265 7.4.3.2.1 */
++	if (sps->log2_max_pic_order_cnt_lsb_minus4 > 12)
++		return 0;
++	if (sps->sps_max_dec_pic_buffering_minus1 > 15)
++		return 0;
++	if (sps->sps_max_num_reorder_pics >
++				sps->sps_max_dec_pic_buffering_minus1)
++		return 0;
++	if (ctb_log2_size_y > 6)
++		return 0;
++	if (max_tb_log2_size_y > 5)
++		return 0;
++	if (max_tb_log2_size_y > ctb_log2_size_y)
++		return 0;
++	if (sps->max_transform_hierarchy_depth_inter >
++				(ctb_log2_size_y - min_tb_log2_size_y))
++		return 0;
++	if (sps->max_transform_hierarchy_depth_intra >
++				(ctb_log2_size_y - min_tb_log2_size_y))
++		return 0;
++	/* Check pcm stuff */
++	if (sps->num_short_term_ref_pic_sets > 64)
++		return 0;
++	if (sps->num_long_term_ref_pics_sps > 32)
++		return 0;
++	return 1;
++}
++
++static inline int is_sps_set(const struct v4l2_ctrl_hevc_sps * const sps)
++{
++	return sps && sps->pic_width_in_luma_samples != 0;
++}
++
++static u32 pixelformat_from_sps(const struct v4l2_ctrl_hevc_sps * const sps,
++				const int index)
++{
++	u32 pf = 0;
++
++	// Use width 0 as a signifier of unsetness
++	if (!is_sps_set(sps)) {
++		/* Treat this as an error? For now return both */
++		if (index == 0)
++			pf = V4L2_PIX_FMT_NV12_COL128;
++		else if (index == 1)
++			pf = V4L2_PIX_FMT_NV12_10_COL128;
++	} else if (index == 0 && rpivid_hevc_validate_sps(sps)) {
++		if (sps->bit_depth_luma_minus8 == 0)
++			pf = V4L2_PIX_FMT_NV12_COL128;
++		else if (sps->bit_depth_luma_minus8 == 2)
++			pf = V4L2_PIX_FMT_NV12_10_COL128;
++	}
++
++	return pf;
++}
++
++static struct v4l2_pix_format
++rpivid_hevc_default_dst_fmt(struct rpivid_ctx * const ctx)
++{
++	const struct v4l2_ctrl_hevc_sps * const sps =
++		rpivid_find_control_data(ctx, V4L2_CID_MPEG_VIDEO_HEVC_SPS);
++	struct v4l2_pix_format pix_fmt = {
++		.width = sps->pic_width_in_luma_samples,
++		.height = sps->pic_height_in_luma_samples,
++		.pixelformat = pixelformat_from_sps(sps, 0)
++	};
++
++	rpivid_prepare_dst_format(&pix_fmt);
++	return pix_fmt;
++}
++
++static u32 rpivid_hevc_get_dst_pixelformat(struct rpivid_ctx * const ctx,
++					   const int index)
++{
++	const struct v4l2_ctrl_hevc_sps * const sps =
++		rpivid_find_control_data(ctx, V4L2_CID_MPEG_VIDEO_HEVC_SPS);
++
++	return pixelformat_from_sps(sps, index);
++}
++
++static int rpivid_enum_fmt_vid_cap(struct file *file, void *priv,
++				   struct v4l2_fmtdesc *f)
++{
++	struct rpivid_ctx * const ctx = rpivid_file2ctx(file);
++
++	const u32 pf = rpivid_hevc_get_dst_pixelformat(ctx, f->index);
++
++	if (pf == 0)
++		return -EINVAL;
++
++	f->pixelformat = pf;
++	return 0;
++}
++
++static int rpivid_g_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct rpivid_ctx *ctx = rpivid_file2ctx(file);
++
++	if (!ctx->dst_fmt_set)
++		ctx->dst_fmt = rpivid_hevc_default_dst_fmt(ctx);
++	f->fmt.pix = ctx->dst_fmt;
++	return 0;
++}
++
++static int rpivid_g_fmt_vid_out(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct rpivid_ctx *ctx = rpivid_file2ctx(file);
++
++	f->fmt.pix = ctx->src_fmt;
++	return 0;
++}
++
++static inline void copy_color(struct v4l2_pix_format *d,
++			      const struct v4l2_pix_format *s)
++{
++	d->colorspace   = s->colorspace;
++	d->xfer_func    = s->xfer_func;
++	d->ycbcr_enc    = s->ycbcr_enc;
++	d->quantization = s->quantization;
++}
++
++static int rpivid_try_fmt_vid_cap(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	struct rpivid_ctx *ctx = rpivid_file2ctx(file);
++	const struct v4l2_ctrl_hevc_sps * const sps =
++		rpivid_find_control_data(ctx, V4L2_CID_MPEG_VIDEO_HEVC_SPS);
++	u32 pixelformat;
++	int i;
++
++	/* Reject format types we don't support */
++	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
++		return -EINVAL;
++
++	for (i = 0; (pixelformat = pixelformat_from_sps(sps, i)) != 0; i++) {
++		if (f->fmt.pix.pixelformat == pixelformat)
++			break;
++	}
++
++	// If we can't use requested fmt then set to default
++	if (pixelformat == 0) {
++		pixelformat = pixelformat_from_sps(sps, 0);
++		// If we don't have a default then give up
++		if (pixelformat == 0)
++			return -EINVAL;
++	}
++
++	// We don't have any way of finding out colourspace so believe
++	// anything we are told - take anything set in src as a default
++	if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
++		copy_color(&f->fmt.pix, &ctx->src_fmt);
++
++	f->fmt.pix.pixelformat = pixelformat;
++	return rpivid_prepare_dst_format(&f->fmt.pix);
++}
++
++static int rpivid_try_fmt_vid_out(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
++		return -EINVAL;
++
++	if (rpivid_prepare_src_format(&f->fmt.pix)) {
++		// Set default src format
++		f->fmt.pix.pixelformat = RPIVID_SRC_PIXELFORMAT_DEFAULT;
++		rpivid_prepare_src_format(&f->fmt.pix);
++	}
++	return 0;
++}
++
++static int rpivid_s_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct rpivid_ctx *ctx = rpivid_file2ctx(file);
++	struct vb2_queue *vq;
++	int ret;
++
++	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
++	if (vb2_is_busy(vq))
++		return -EBUSY;
++
++	ret = rpivid_try_fmt_vid_cap(file, priv, f);
++	if (ret)
++		return ret;
++
++	ctx->dst_fmt = f->fmt.pix;
++	ctx->dst_fmt_set = 1;
++
++	return 0;
++}
++
++static int rpivid_s_fmt_vid_out(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct rpivid_ctx *ctx = rpivid_file2ctx(file);
++	struct vb2_queue *vq;
++	int ret;
++
++	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
++	if (vb2_is_busy(vq))
++		return -EBUSY;
++
++	ret = rpivid_try_fmt_vid_out(file, priv, f);
++	if (ret)
++		return ret;
++
++	ctx->src_fmt = f->fmt.pix;
++	ctx->dst_fmt_set = 0;  // Setting src invalidates dst
++
++	vq->subsystem_flags |=
++		VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
++
++	/* Propagate colorspace information to capture. */
++	copy_color(&ctx->dst_fmt, &f->fmt.pix);
++	return 0;
++}
++
++const struct v4l2_ioctl_ops rpivid_ioctl_ops = {
++	.vidioc_querycap		= rpivid_querycap,
++
++	.vidioc_enum_fmt_vid_cap	= rpivid_enum_fmt_vid_cap,
++	.vidioc_g_fmt_vid_cap		= rpivid_g_fmt_vid_cap,
++	.vidioc_try_fmt_vid_cap		= rpivid_try_fmt_vid_cap,
++	.vidioc_s_fmt_vid_cap		= rpivid_s_fmt_vid_cap,
++
++	.vidioc_enum_fmt_vid_out	= rpivid_enum_fmt_vid_out,
++	.vidioc_g_fmt_vid_out		= rpivid_g_fmt_vid_out,
++	.vidioc_try_fmt_vid_out		= rpivid_try_fmt_vid_out,
++	.vidioc_s_fmt_vid_out		= rpivid_s_fmt_vid_out,
++
++	.vidioc_reqbufs			= v4l2_m2m_ioctl_reqbufs,
++	.vidioc_querybuf		= v4l2_m2m_ioctl_querybuf,
++	.vidioc_qbuf			= v4l2_m2m_ioctl_qbuf,
++	.vidioc_dqbuf			= v4l2_m2m_ioctl_dqbuf,
++	.vidioc_prepare_buf		= v4l2_m2m_ioctl_prepare_buf,
++	.vidioc_create_bufs		= v4l2_m2m_ioctl_create_bufs,
++	.vidioc_expbuf			= v4l2_m2m_ioctl_expbuf,
++
++	.vidioc_streamon		= v4l2_m2m_ioctl_streamon,
++	.vidioc_streamoff		= v4l2_m2m_ioctl_streamoff,
++
++	.vidioc_try_decoder_cmd		= v4l2_m2m_ioctl_stateless_try_decoder_cmd,
++	.vidioc_decoder_cmd		= v4l2_m2m_ioctl_stateless_decoder_cmd,
++
++	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
++	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
++};
++
++static int rpivid_queue_setup(struct vb2_queue *vq, unsigned int *nbufs,
++			      unsigned int *nplanes, unsigned int sizes[],
++			      struct device *alloc_devs[])
++{
++	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
++	struct v4l2_pix_format *pix_fmt;
++
++	if (V4L2_TYPE_IS_OUTPUT(vq->type))
++		pix_fmt = &ctx->src_fmt;
++	else
++		pix_fmt = &ctx->dst_fmt;
++
++	if (*nplanes) {
++		if (sizes[0] < pix_fmt->sizeimage)
++			return -EINVAL;
++	} else {
++		sizes[0] = pix_fmt->sizeimage;
++		*nplanes = 1;
++	}
++
++	return 0;
++}
++
++static void rpivid_queue_cleanup(struct vb2_queue *vq, u32 state)
++{
++	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
++	struct vb2_v4l2_buffer *vbuf;
++
++	for (;;) {
++		if (V4L2_TYPE_IS_OUTPUT(vq->type))
++			vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
++		else
++			vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
++
++		if (!vbuf)
++			return;
++
++		v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
++					   &ctx->hdl);
++		v4l2_m2m_buf_done(vbuf, state);
++	}
++}
++
++static int rpivid_buf_out_validate(struct vb2_buffer *vb)
++{
++	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
++
++	vbuf->field = V4L2_FIELD_NONE;
++	return 0;
++}
++
++static int rpivid_buf_prepare(struct vb2_buffer *vb)
++{
++	struct vb2_queue *vq = vb->vb2_queue;
++	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
++	struct v4l2_pix_format *pix_fmt;
++
++	if (V4L2_TYPE_IS_OUTPUT(vq->type))
++		pix_fmt = &ctx->src_fmt;
++	else
++		pix_fmt = &ctx->dst_fmt;
++
++	if (vb2_plane_size(vb, 0) < pix_fmt->sizeimage)
++		return -EINVAL;
++
++	vb2_set_plane_payload(vb, 0, pix_fmt->sizeimage);
++
++	return 0;
++}
++
++static int rpivid_start_streaming(struct vb2_queue *vq, unsigned int count)
++{
++	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
++	struct rpivid_dev *dev = ctx->dev;
++	int ret = 0;
++
++	if (ctx->src_fmt.pixelformat != V4L2_PIX_FMT_HEVC_SLICE)
++		return -EINVAL;
++
++	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->start)
++		ret = dev->dec_ops->start(ctx);
++
++	ret = clk_set_rate(dev->clock, 500 * 1000 * 1000);
++	if (ret) {
++		dev_err(dev->dev, "Failed to set clock rate\n");
++		goto out;
++	}
++
++	ret = clk_prepare_enable(dev->clock);
++	if (ret)
++		dev_err(dev->dev, "Failed to enable clock\n");
++
++out:
++	if (ret)
++		rpivid_queue_cleanup(vq, VB2_BUF_STATE_QUEUED);
++
++	return ret;
++}
++
++static void rpivid_stop_streaming(struct vb2_queue *vq)
++{
++	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
++	struct rpivid_dev *dev = ctx->dev;
++
++	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->stop)
++		dev->dec_ops->stop(ctx);
++
++	rpivid_queue_cleanup(vq, VB2_BUF_STATE_ERROR);
++
++	clk_disable_unprepare(dev->clock);
++}
++
++static void rpivid_buf_queue(struct vb2_buffer *vb)
++{
++	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
++	struct rpivid_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
++
++	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
++}
++
++static void rpivid_buf_request_complete(struct vb2_buffer *vb)
++{
++	struct rpivid_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
++
++	v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl);
++}
++
++static struct vb2_ops rpivid_qops = {
++	.queue_setup		= rpivid_queue_setup,
++	.buf_prepare		= rpivid_buf_prepare,
++	.buf_queue		= rpivid_buf_queue,
++	.buf_out_validate	= rpivid_buf_out_validate,
++	.buf_request_complete	= rpivid_buf_request_complete,
++	.start_streaming	= rpivid_start_streaming,
++	.stop_streaming		= rpivid_stop_streaming,
++	.wait_prepare		= vb2_ops_wait_prepare,
++	.wait_finish		= vb2_ops_wait_finish,
++};
++
++int rpivid_queue_init(void *priv, struct vb2_queue *src_vq,
++		      struct vb2_queue *dst_vq)
++{
++	struct rpivid_ctx *ctx = priv;
++	int ret;
++
++	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
++	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
++	src_vq->drv_priv = ctx;
++	src_vq->buf_struct_size = sizeof(struct rpivid_buffer);
++	src_vq->min_buffers_needed = 1;
++	src_vq->ops = &rpivid_qops;
++	src_vq->mem_ops = &vb2_dma_contig_memops;
++	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
++	src_vq->lock = &ctx->dev->dev_mutex;
++	src_vq->dev = ctx->dev->dev;
++	src_vq->supports_requests = true;
++	src_vq->requires_requests = true;
++
++	ret = vb2_queue_init(src_vq);
++	if (ret)
++		return ret;
++
++	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++	dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
++	dst_vq->drv_priv = ctx;
++	dst_vq->buf_struct_size = sizeof(struct rpivid_buffer);
++	dst_vq->min_buffers_needed = 1;
++	dst_vq->ops = &rpivid_qops;
++	dst_vq->mem_ops = &vb2_dma_contig_memops;
++	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
++	dst_vq->lock = &ctx->dev->dev_mutex;
++	dst_vq->dev = ctx->dev->dev;
++
++	return vb2_queue_init(dst_vq);
++}
+--- /dev/null
++++ b/drivers/staging/media/rpivid/rpivid_video.h
+@@ -0,0 +1,30 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Raspberry Pi HEVC driver
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ *
++ * Based on the Cedrus VPU driver, that is:
++ *
++ * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
++ * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
++ * Copyright (C) 2018 Bootlin
++ */
++
++#ifndef _RPIVID_VIDEO_H_
++#define _RPIVID_VIDEO_H_
++
++struct rpivid_format {
++	u32		pixelformat;
++	u32		directions;
++	unsigned int	capabilities;
++};
++
++extern const struct v4l2_ioctl_ops rpivid_ioctl_ops;
++
++int rpivid_queue_init(void *priv, struct vb2_queue *src_vq,
++		      struct vb2_queue *dst_vq);
++int rpivid_prepare_src_format(struct v4l2_pix_format *pix_fmt);
++int rpivid_prepare_dst_format(struct v4l2_pix_format *pix_fmt);
++
++#endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0204-dt-bindings-clock-Add-a-binding-for-the-RPi-Firmware.patch b/target/linux/bcm27xx/patches-5.15/950-0204-dt-bindings-clock-Add-a-binding-for-the-RPi-Firmware.patch
new file mode 100644
index 0000000000..7b98b69fda
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0204-dt-bindings-clock-Add-a-binding-for-the-RPi-Firmware.patch
@@ -0,0 +1,63 @@
+From b0682b4ef5d4eb82ee702d8c3f3560349f1a231c Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 13 Feb 2020 17:51:09 +0100
+Subject: [PATCH] dt-bindings: clock: Add a binding for the RPi
+ Firmware clocks
+
+The firmare running on the RPi VideoCore can be used to discover and
+change the various clocks running in the BCM2711. Since devices will
+need to use them through the DT, let's add a pretty simple binding.
+
+Cc: Michael Turquette <mturquette@baylibre.com>
+Cc: Stephen Boyd <sboyd@kernel.org>
+Cc: Rob Herring <robh+dt@kernel.org>
+Cc: linux-clk@vger.kernel.org
+Cc: devicetree@vger.kernel.org
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ .../clock/raspberrypi,firmware-clocks.yaml    | 39 +++++++++++++++++++
+ 1 file changed, 39 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
+@@ -0,0 +1,39 @@
++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/clock/raspberrypi,firmware-clocks.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: RaspberryPi Firmware Clocks Device Tree Bindings
++
++maintainers:
++  - Maxime Ripard <mripard@kernel.org>
++
++properties:
++  "#clock-cells":
++    const: 1
++
++  compatible:
++    const: raspberrypi,firmware-clocks
++
++  raspberrypi,firmware:
++    $ref: /schemas/types.yaml#/definitions/phandle
++    description: >
++      Phandle to the mailbox node to communicate with the firmware.
++
++required:
++  - "#clock-cells"
++  - compatible
++  - raspberrypi,firmware
++
++additionalProperties: false
++
++examples:
++  - |
++    firmware_clocks: firmware-clocks {
++        compatible = "raspberrypi,firmware-clocks";
++        raspberrypi,firmware = <&firmware>;
++        #clock-cells = <1>;
++    };
++
++...
diff --git a/target/linux/bcm27xx/patches-5.15/950-0205-dt-bindings-display-vc4-hdmi-Add-BCM2711-HDMI-contro.patch b/target/linux/bcm27xx/patches-5.15/950-0205-dt-bindings-display-vc4-hdmi-Add-BCM2711-HDMI-contro.patch
new file mode 100644
index 0000000000..efde9d3812
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0205-dt-bindings-display-vc4-hdmi-Add-BCM2711-HDMI-contro.patch
@@ -0,0 +1,174 @@
+From b60e8bcad707be3999f253d0d8a829130c1862c2 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 13 Feb 2020 16:45:24 +0100
+Subject: [PATCH] dt-bindings: display: vc4: hdmi: Add BCM2711 HDMI
+ controllers bindings
+
+The HDMI controllers found in the BCM2711 SoC need some adjustments to the
+bindings, especially since the registers have been shuffled around in more
+register ranges.
+
+Cc: Rob Herring <robh+dt@kernel.org>
+Cc: devicetree@vger.kernel.org
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ .../bindings/display/brcm,bcm2835-hdmi.yaml   | 118 ++++++++++++++++--
+ 1 file changed, 109 insertions(+), 9 deletions(-)
+
+--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml
++++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml
+@@ -11,24 +11,58 @@ maintainers:
+ 
+ properties:
+   compatible:
+-    const: brcm,bcm2835-hdmi
++    enum:
++      - brcm,bcm2835-hdmi
++      - brcm,bcm2711-hdmi0
++      - brcm,bcm2711-hdmi1
+ 
+   reg:
++    oneOf:
++      - items:
++        - description: HDMI register range
++        - description: HD register range
++
++      - items:
++        - description: HDMI controller register range
++        - description: DVP register range
++        - description: HDMI PHY register range
++        - description: Rate Manager register range
++        - description: Packet RAM register range
++        - description: Metadata RAM register range
++        - description: CSC register range
++        - description: CEC register range
++        - description: HD register range
++
++  reg-names:
+     items:
+-      - description: HDMI register range
+-      - description: HD register range
++      - const: hdmi
++      - const: dvp
++      - const: phy
++      - const: rm
++      - const: packet
++      - const: metadata
++      - const: csc
++      - const: cec
++      - const: hd
+ 
+   interrupts:
+     minItems: 2
+ 
+   clocks:
+-    items:
+-      - description: The pixel clock
+-      - description: The HDMI state machine clock
++    oneOf:
++      - items:
++        - description: The pixel clock
++        - description: The HDMI state machine clock
++
++      - items:
++        - description: The HDMI state machine clock
+ 
+   clock-names:
+-    items:
+-      - const: pixel
++    oneOf:
++      - items:
++        - const: pixel
++        - const: hdmi
++
+       - const: hdmi
+ 
+   ddc:
+@@ -51,15 +85,54 @@ properties:
+   dma-names:
+     const: audio-rx
+ 
++  resets:
++    maxItems: 1
++
+ required:
+   - compatible
+   - reg
+-  - interrupts
+   - clocks
+   - ddc
+ 
+ additionalProperties: false
+ 
++if:
++  properties:
++    compatible:
++      contains:
++        enum:
++          - brcm,bcm2711-hdmi0
++          - brcm,bcm2711-hdmi1
++
++then:
++  properties:
++    reg:
++      minItems: 9
++
++    clocks:
++      maxItems: 1
++
++    clock-names:
++      maxItems: 1
++
++  required:
++    - reg-names
++    - resets
++
++else:
++  properties:
++    reg:
++      maxItems: 2
++
++    clocks:
++      minItems: 2
++
++    clock-names:
++      minItems: 2
++
++  required:
++    - interrupts
++
+ examples:
+   - |
+     #include <dt-bindings/clock/bcm2835.h>
+@@ -77,4 +150,31 @@ examples:
+         clock-names = "pixel", "hdmi";
+     };
+ 
++  - |
++    hdmi0: hdmi@7ef00700 {
++        compatible = "brcm,bcm2711-hdmi0";
++        reg = <0x7ef00700 0x300>,
++              <0x7ef00300 0x200>,
++              <0x7ef00f00 0x80>,
++              <0x7ef00f80 0x80>,
++              <0x7ef01b00 0x200>,
++              <0x7ef01f00 0x400>,
++              <0x7ef00200 0x80>,
++              <0x7ef04300 0x100>,
++              <0x7ef20000 0x100>;
++        reg-names = "hdmi",
++                    "dvp",
++                    "phy",
++                    "rm",
++                    "packet",
++                    "metadata",
++                    "csc",
++                    "cec",
++                    "hd";
++        clocks = <&firmware_clocks 13>;
++        clock-names = "hdmi";
++        resets = <&dvp 0>;
++        ddc = <&ddc0>;
++    };
++
+ ...
diff --git a/target/linux/bcm27xx/patches-5.15/950-0206-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch b/target/linux/bcm27xx/patches-5.15/950-0206-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch
new file mode 100644
index 0000000000..06ad9d301d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0206-drm-Checking-of-the-pitch-is-only-valid-for-linear-f.patch
@@ -0,0 +1,39 @@
+From e8a4f85fb2d132ccd7e5773176df779588ba1281 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 27 Jan 2020 10:22:44 +0000
+Subject: [PATCH] drm: Checking of the pitch is only valid for linear
+ formats
+
+framebuffer_check was computing a minimum pitch value and ensuring
+that the provided value was greater than this.
+That check is only valid if the format is linear.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/drm_framebuffer.c | 16 ++++++++++------
+ 1 file changed, 10 insertions(+), 6 deletions(-)
+
+--- a/drivers/gpu/drm/drm_framebuffer.c
++++ b/drivers/gpu/drm/drm_framebuffer.c
+@@ -214,12 +214,16 @@ static int framebuffer_check(struct drm_
+ 		if (min_pitch > UINT_MAX)
+ 			return -ERANGE;
+ 
+-		if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
+-			return -ERANGE;
++		if (r->modifier[i] == DRM_FORMAT_MOD_LINEAR) {
++			if ((uint64_t)height * r->pitches[i] + r->offsets[i] >
++								UINT_MAX)
++				return -ERANGE;
+ 
+-		if (block_size && r->pitches[i] < min_pitch) {
+-			DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
+-			return -EINVAL;
++			if (block_size && r->pitches[i] < min_pitch) {
++				DRM_DEBUG_KMS("bad pitch %u for plane %d\n",
++					      r->pitches[i], i);
++				return -EINVAL;
++			}
+ 		}
+ 
+ 		if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0207-driver-char-rpivid-Remove-legacy-name-support.patch b/target/linux/bcm27xx/patches-5.15/950-0207-driver-char-rpivid-Remove-legacy-name-support.patch
new file mode 100644
index 0000000000..df0f3caa40
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0207-driver-char-rpivid-Remove-legacy-name-support.patch
@@ -0,0 +1,53 @@
+From 7f47cc7fd70961891c50ce303147274b6f318464 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 20 Apr 2020 22:18:52 +0100
+Subject: [PATCH] driver: char: rpivid: Remove legacy name support
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/char/broadcom/rpivid-mem.c | 22 ----------------------
+ 1 file changed, 22 deletions(-)
+
+--- a/drivers/char/broadcom/rpivid-mem.c
++++ b/drivers/char/broadcom/rpivid-mem.c
+@@ -193,32 +193,11 @@ static int rpivid_mem_probe(struct platf
+ 		goto failed_device_create;
+ 	}
+ 
+-	/* Legacy alias */
+-	{
+-		char *oldname = kstrdup(priv->name, GFP_KERNEL);
+-
+-		oldname[1] = 'a';
+-		oldname[2] = 'r';
+-		oldname[3] = 'g';
+-		oldname[4] = 'o';
+-		oldname[5] = 'n';
+-		dev = device_create(priv->class, NULL, priv->devid + 1, NULL,
+-				    oldname + 1);
+-		kfree(oldname);
+-
+-		if (IS_ERR(dev)) {
+-			err = PTR_ERR(dev);
+-			goto failed_legacy_device_create;
+-		}
+-	}
+-
+ 	dev_info(priv->dev, "%s initialised: Registers at 0x%08lx length 0x%08lx",
+ 		priv->name, priv->regs_phys, priv->mem_window_len);
+ 
+ 	return 0;
+ 
+-failed_legacy_device_create:
+-	device_destroy(priv->class, priv->devid);
+ failed_device_create:
+ 	class_destroy(priv->class);
+ failed_class_create:
+@@ -238,7 +217,6 @@ static int rpivid_mem_remove(struct plat
+ 	struct device *dev = &pdev->dev;
+ 	struct rpivid_mem_priv *priv = platform_get_drvdata(pdev);
+ 
+-	device_destroy(priv->class, priv->devid + 1);
+ 	device_destroy(priv->class, priv->devid);
+ 	class_destroy(priv->class);
+ 	cdev_del(&priv->rpivid_mem_cdev);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0208-spi-Force-CS_HIGH-if-GPIO-descriptors-are-used.patch b/target/linux/bcm27xx/patches-5.15/950-0208-spi-Force-CS_HIGH-if-GPIO-descriptors-are-used.patch
new file mode 100644
index 0000000000..e1765aedce
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0208-spi-Force-CS_HIGH-if-GPIO-descriptors-are-used.patch
@@ -0,0 +1,57 @@
+From 43840b26213fb0522ab464e9a31f148122acaa80 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 17 Apr 2020 10:46:19 +0100
+Subject: [PATCH] spi: Force CS_HIGH if GPIO descriptors are used
+
+Commit f3186dd87669 ("spi: Optionally use GPIO descriptors for CS GPIOs")
+amended of_spi_parse_dt() to always set SPI_CS_HIGH for SPI slaves whose
+Chip Select is defined by a "cs-gpios" devicetree property.
+
+This change breaks drivers whose probe functions set the mode field of
+the spi_device because in doing so they clear the SPI_CS_HIGH flag.
+
+Fix by setting SPI_CS_HIGH in spi_setup (under the same conditions as
+in of_spi_parse_dt()).
+
+See also: 83b2a8fe43bd ("spi: spidev: Fix CS polarity if GPIO descriptors are used")
+
+Fixes: f3186dd87669 ("spi: Optionally use GPIO descriptors for CS GPIOs")
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+SQUASH: spi: Demote SPI_CS_HIGH warning to KERN_DEBUG
+
+This warning is unavoidable from a client's perspective and
+doesn't indicate anything wrong (just surprising).
+
+SQUASH with "spi: use_gpio_descriptor fixup moved to spi_setup"
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/spi/spi.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/drivers/spi/spi.c
++++ b/drivers/spi/spi.c
+@@ -3469,6 +3469,7 @@ static int __spi_validate_bits_per_word(
+  */
+ int spi_setup(struct spi_device *spi)
+ {
++	struct spi_controller *ctlr = spi->controller;
+ 	unsigned	bad_bits, ugly_bits;
+ 	int		status;
+ 
+@@ -3490,6 +3491,14 @@ int spi_setup(struct spi_device *spi)
+ 		(SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL |
+ 		 SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL)))
+ 		return -EINVAL;
++
++	if (ctlr->use_gpio_descriptors && ctlr->cs_gpiods &&
++	    ctlr->cs_gpiods[spi->chip_select] && !(spi->mode & SPI_CS_HIGH)) {
++		dev_dbg(&spi->dev,
++			"setup: forcing CS_HIGH (use_gpio_descriptors)\n");
++		spi->mode |= SPI_CS_HIGH;
++	}
++
+ 	/* help drivers fail *cleanly* when they need options
+ 	 * that aren't supported with their current controller
+ 	 * SPI_CS_WORD has a fallback software implementation,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0209-driver-char-rpivid-Don-t-map-more-than-wanted.patch b/target/linux/bcm27xx/patches-5.15/950-0209-driver-char-rpivid-Don-t-map-more-than-wanted.patch
new file mode 100644
index 0000000000..c1a1f74316
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0209-driver-char-rpivid-Don-t-map-more-than-wanted.patch
@@ -0,0 +1,51 @@
+From f24635237a6c0f3338955169098fd6709b4420d5 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 21 Apr 2020 11:30:23 +0100
+Subject: [PATCH] driver: char: rpivid: Don't map more than wanted
+
+Limit mappings to the permitted range, but don't map more than asked
+for otherwise we walk off the end of the allocated VMA.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/char/broadcom/rpivid-mem.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/drivers/char/broadcom/rpivid-mem.c
++++ b/drivers/char/broadcom/rpivid-mem.c
+@@ -100,6 +100,7 @@ static int rpivid_mem_mmap(struct file *
+ {
+ 	struct rpivid_mem_priv *priv;
+ 	unsigned long pages;
++	unsigned long len;
+ 
+ 	priv = file->private_data;
+ 	pages = priv->regs_phys >> PAGE_SHIFT;
+@@ -107,14 +108,13 @@ static int rpivid_mem_mmap(struct file *
+ 	 * The address decode is far larger than the actual number of registers.
+ 	 * Just map the whole lot in.
+ 	 */
+-	vma->vm_page_prot = phys_mem_access_prot(file, pages,
+-						 priv->mem_window_len,
++	len = min(vma->vm_end - vma->vm_start, priv->mem_window_len);
++	vma->vm_page_prot = phys_mem_access_prot(file, pages, len,
+ 						 vma->vm_page_prot);
+ 	vma->vm_ops = &rpivid_mem_vm_ops;
+ 	if (remap_pfn_range(vma, vma->vm_start,
+-			pages,
+-			priv->mem_window_len,
+-			vma->vm_page_prot)) {
++			    pages, len,
++			    vma->vm_page_prot)) {
+ 		return -EAGAIN;
+ 	}
+ 	return 0;
+@@ -156,7 +156,7 @@ static int rpivid_mem_probe(struct platf
+ 	ioresource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	if (ioresource) {
+ 		priv->regs_phys = ioresource->start;
+-		priv->mem_window_len = ioresource->end - ioresource->start;
++		priv->mem_window_len = (ioresource->end + 1) - ioresource->start;
+ 	} else {
+ 		dev_err(priv->dev, "failed to get IO resource");
+ 		err = -ENOENT;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0210-media-bcm2835-unicam-Driver-for-CCP2-CSI2-camera-int.patch b/target/linux/bcm27xx/patches-5.15/950-0210-media-bcm2835-unicam-Driver-for-CCP2-CSI2-camera-int.patch
new file mode 100644
index 0000000000..ae1354b5b6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0210-media-bcm2835-unicam-Driver-for-CCP2-CSI2-camera-int.patch
@@ -0,0 +1,2711 @@
+From 8f4208f42c896b71abe54b697cd044f0af490e67 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 1 Apr 2020 08:39:49 +0100
+Subject: [PATCH] media: bcm2835-unicam: Driver for CCP2/CSI2 camera
+ interface
+
+Add driver for the Unicam camera receiver block on
+BCM283x processors.
+
+This commit is made up of a series of changes cherry-picked from the
+rpi-4.19.y branch.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ MAINTAINERS                                   |    2 +-
+ drivers/media/platform/Kconfig                |    1 +
+ drivers/media/platform/Makefile               |    2 +
+ drivers/media/platform/bcm2835/Kconfig        |   14 +
+ drivers/media/platform/bcm2835/Makefile       |    3 +
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 2369 +++++++++++++++++
+ .../media/platform/bcm2835/vc4-regs-unicam.h  |  253 ++
+ 7 files changed, 2643 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/media/platform/bcm2835/Kconfig
+ create mode 100644 drivers/media/platform/bcm2835/Makefile
+ create mode 100644 drivers/media/platform/bcm2835/bcm2835-unicam.c
+ create mode 100644 drivers/media/platform/bcm2835/vc4-regs-unicam.h
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3560,7 +3560,7 @@ F:	Documentation/devicetree/bindings/med
+ F:	drivers/staging/media/rpivid
+ 
+ BROADCOM BCM2835 CAMERA DRIVER
+-M:	Dave Stevenson <dave.stevenson@raspberrypi.org>
++M:	Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
+ L:	linux-media@vger.kernel.org
+ S:	Maintained
+ F:	drivers/media/platform/bcm2835/
+--- a/drivers/media/platform/Kconfig
++++ b/drivers/media/platform/Kconfig
+@@ -170,6 +170,7 @@ source "drivers/media/platform/am437x/Kc
+ source "drivers/media/platform/xilinx/Kconfig"
+ source "drivers/media/platform/rcar-vin/Kconfig"
+ source "drivers/media/platform/atmel/Kconfig"
++source "drivers/media/platform/bcm2835/Kconfig"
+ source "drivers/media/platform/sunxi/Kconfig"
+ 
+ config VIDEO_TI_CAL
+--- a/drivers/media/platform/Makefile
++++ b/drivers/media/platform/Makefile
+@@ -83,6 +83,8 @@ obj-$(CONFIG_VIDEO_QCOM_CAMSS)		+= qcom/
+ 
+ obj-$(CONFIG_VIDEO_QCOM_VENUS)		+= qcom/venus/
+ 
++obj-y					+= bcm2835/
++
+ obj-y					+= sunxi/
+ 
+ obj-$(CONFIG_VIDEO_MESON_GE2D)		+= meson/ge2d/
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/Kconfig
+@@ -0,0 +1,14 @@
++# Broadcom VideoCore4 V4L2 camera support
++
++config VIDEO_BCM2835_UNICAM
++	tristate "Broadcom BCM2835 Unicam video capture driver"
++	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && MEDIA_CONTROLLER
++	depends on ARCH_BCM2835 || COMPILE_TEST
++	select VIDEOBUF2_DMA_CONTIG
++	select V4L2_FWNODE
++	help
++	  Say Y here to enable V4L2 subdevice for CSI2 receiver.
++	  This is a V4L2 subdevice that interfaces directly to the VC4 peripheral.
++
++	   To compile this driver as a module, choose M here. The module
++	   will be called bcm2835-unicam.
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/Makefile
+@@ -0,0 +1,3 @@
++# Makefile for BCM2835 Unicam driver
++
++obj-$(CONFIG_VIDEO_BCM2835_UNICAM) += bcm2835-unicam.o
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -0,0 +1,2369 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * BCM2835 Unicam Capture Driver
++ *
++ * Copyright (C) 2017-2020 - Raspberry Pi (Trading) Ltd.
++ *
++ * Dave Stevenson <dave.stevenson@raspberrypi.com>
++ *
++ * Based on TI am437x driver by
++ *   Benoit Parrot <bparrot@ti.com>
++ *   Lad, Prabhakar <prabhakar.csengg@gmail.com>
++ *
++ * and TI CAL camera interface driver by
++ *    Benoit Parrot <bparrot@ti.com>
++ *
++ *
++ * There are two camera drivers in the kernel for BCM283x - this one
++ * and bcm2835-camera (currently in staging).
++ *
++ * This driver directly controls the Unicam peripheral - there is no
++ * involvement with the VideoCore firmware. Unicam receives CSI-2 or
++ * CCP2 data and writes it into SDRAM.
++ * The only potential processing options are to repack Bayer data into an
++ * alternate format, and applying windowing.
++ * The repacking does not shift the data, so can repack V4L2_PIX_FMT_Sxxxx10P
++ * to V4L2_PIX_FMT_Sxxxx10, or V4L2_PIX_FMT_Sxxxx12P to V4L2_PIX_FMT_Sxxxx12,
++ * but not generically up to V4L2_PIX_FMT_Sxxxx16. The driver will add both
++ * formats where the relevant formats are defined, and will automatically
++ * configure the repacking as required.
++ * Support for windowing may be added later.
++ *
++ * It should be possible to connect this driver to any sensor with a
++ * suitable output interface and V4L2 subdevice driver.
++ *
++ * bcm2835-camera uses the VideoCore firmware to control the sensor,
++ * Unicam, ISP, and all tuner control loops. Fully processed frames are
++ * delivered to the driver by the firmware. It only has sensor drivers
++ * for Omnivision OV5647, and Sony IMX219 sensors.
++ *
++ * The two drivers are mutually exclusive for the same Unicam instance.
++ * The VideoCore firmware checks the device tree configuration during boot.
++ * If it finds device tree nodes called csi0 or csi1 it will block the
++ * firmware from accessing the peripheral, and bcm2835-camera will
++ * not be able to stream data.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/device.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of_device.h>
++#include <linux/of_graph.h>
++#include <linux/pinctrl/consumer.h>
++#include <linux/platform_device.h>
++#include <linux/pm_runtime.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/videodev2.h>
++
++#include <media/v4l2-common.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-dev.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-dv-timings.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-ioctl.h>
++#include <media/v4l2-fwnode.h>
++#include <media/videobuf2-dma-contig.h>
++
++#include "vc4-regs-unicam.h"
++
++#define UNICAM_MODULE_NAME	"unicam"
++#define UNICAM_VERSION		"0.1.0"
++
++static int debug;
++module_param(debug, int, 0644);
++MODULE_PARM_DESC(debug, "Debug level 0-3");
++
++#define unicam_dbg(level, dev, fmt, arg...)	\
++		v4l2_dbg(level, debug, &(dev)->v4l2_dev, fmt, ##arg)
++#define unicam_info(dev, fmt, arg...)	\
++		v4l2_info(&(dev)->v4l2_dev, fmt, ##arg)
++#define unicam_err(dev, fmt, arg...)	\
++		v4l2_err(&(dev)->v4l2_dev, fmt, ##arg)
++
++/* To protect against a dodgy sensor driver never returning an error from
++ * enum_mbus_code, set a maximum index value to be used.
++ */
++#define MAX_ENUM_MBUS_CODE	128
++
++/*
++ * Stride is a 16 bit register, but also has to be a multiple of 32.
++ */
++#define BPL_ALIGNMENT		32
++#define MAX_BYTESPERLINE	((1 << 16) - BPL_ALIGNMENT)
++/*
++ * Max width is therefore determined by the max stride divided by
++ * the number of bits per pixel. Take 32bpp as a
++ * worst case.
++ * No imposed limit on the height, so adopt a square image for want
++ * of anything better.
++ */
++#define MAX_WIDTH	(MAX_BYTESPERLINE / 4)
++#define MAX_HEIGHT	MAX_WIDTH
++/* Define a nominal minimum image size */
++#define MIN_WIDTH	16
++#define MIN_HEIGHT	16
++
++/*
++ * struct unicam_fmt - Unicam media bus format information
++ * @pixelformat: V4L2 pixel format FCC identifier. 0 if n/a.
++ * @repacked_fourcc: V4L2 pixel format FCC identifier if the data is expanded
++ * out to 16bpp. 0 if n/a.
++ * @code: V4L2 media bus format code.
++ * @depth: Bits per pixel as delivered from the source.
++ * @csi_dt: CSI data type.
++ * @check_variants: Flag to denote that there are multiple mediabus formats
++ *		still in the list that could match this V4L2 format.
++ */
++struct unicam_fmt {
++	u32	fourcc;
++	u32	repacked_fourcc;
++	u32	code;
++	u8	depth;
++	u8	csi_dt;
++	u8	check_variants;
++};
++
++static const struct unicam_fmt formats[] = {
++	/* YUV Formats */
++	{
++		.fourcc		= V4L2_PIX_FMT_YUYV,
++		.code		= MEDIA_BUS_FMT_YUYV8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_UYVY,
++		.code		= MEDIA_BUS_FMT_UYVY8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_YVYU,
++		.code		= MEDIA_BUS_FMT_YVYU8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_VYUY,
++		.code		= MEDIA_BUS_FMT_VYUY8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_YUYV,
++		.code		= MEDIA_BUS_FMT_YUYV8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_UYVY,
++		.code		= MEDIA_BUS_FMT_UYVY8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_YVYU,
++		.code		= MEDIA_BUS_FMT_YVYU8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_VYUY,
++		.code		= MEDIA_BUS_FMT_VYUY8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++	/* RGB Formats */
++		.fourcc		= V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
++		.code		= MEDIA_BUS_FMT_RGB565_2X8_LE,
++		.depth		= 16,
++		.csi_dt		= 0x22,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
++		.code		= MEDIA_BUS_FMT_RGB565_2X8_BE,
++		.depth		= 16,
++		.csi_dt		= 0x22
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
++		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
++		.depth		= 16,
++		.csi_dt		= 0x21,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
++		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
++		.depth		= 16,
++		.csi_dt		= 0x21,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB24, /* rgb */
++		.code		= MEDIA_BUS_FMT_RGB888_1X24,
++		.depth		= 24,
++		.csi_dt		= 0x24,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_BGR24, /* bgr */
++		.code		= MEDIA_BUS_FMT_BGR888_1X24,
++		.depth		= 24,
++		.csi_dt		= 0x24,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB32, /* argb */
++		.code		= MEDIA_BUS_FMT_ARGB8888_1X32,
++		.depth		= 32,
++		.csi_dt		= 0x0,
++	}, {
++	/* Bayer Formats */
++		.fourcc		= V4L2_PIX_FMT_SBGGR8,
++		.code		= MEDIA_BUS_FMT_SBGGR8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG8,
++		.code		= MEDIA_BUS_FMT_SGBRG8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG8,
++		.code		= MEDIA_BUS_FMT_SGRBG8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB8,
++		.code		= MEDIA_BUS_FMT_SRGGB8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SBGGR10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SBGGR10,
++		.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGBRG10,
++		.code		= MEDIA_BUS_FMT_SGBRG10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGRBG10,
++		.code		= MEDIA_BUS_FMT_SGRBG10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SRGGB10,
++		.code		= MEDIA_BUS_FMT_SRGGB10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SBGGR12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SBGGR12,
++		.code		= MEDIA_BUS_FMT_SBGGR12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGBRG12,
++		.code		= MEDIA_BUS_FMT_SGBRG12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGRBG12,
++		.code		= MEDIA_BUS_FMT_SGRBG12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SRGGB12,
++		.code		= MEDIA_BUS_FMT_SRGGB12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SBGGR14P,
++		.code		= MEDIA_BUS_FMT_SBGGR14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG14P,
++		.code		= MEDIA_BUS_FMT_SGBRG14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG14P,
++		.code		= MEDIA_BUS_FMT_SGRBG14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB14P,
++		.code		= MEDIA_BUS_FMT_SRGGB14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++	/*
++	 * 16 bit Bayer formats could be supported, but there is no CSI2
++	 * data_type defined for raw 16, and no sensors that produce it at
++	 * present.
++	 */
++
++	/* Greyscale formats */
++		.fourcc		= V4L2_PIX_FMT_GREY,
++		.code		= MEDIA_BUS_FMT_Y8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_Y10P,
++		.repacked_fourcc = V4L2_PIX_FMT_Y10,
++		.code		= MEDIA_BUS_FMT_Y10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		/* NB There is no packed V4L2 fourcc for this format. */
++		.repacked_fourcc = V4L2_PIX_FMT_Y12,
++		.code		= MEDIA_BUS_FMT_Y12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	},
++};
++
++struct unicam_dmaqueue {
++	struct list_head	active;
++};
++
++struct unicam_buffer {
++	struct vb2_v4l2_buffer vb;
++	struct list_head list;
++};
++
++struct unicam_cfg {
++	/* peripheral base address */
++	void __iomem *base;
++	/* clock gating base address */
++	void __iomem *clk_gate_base;
++};
++
++#define MAX_POSSIBLE_PIX_FMTS (ARRAY_SIZE(formats))
++
++struct unicam_device {
++	/* V4l2 specific parameters */
++	/* Identifies video device for this channel */
++	struct video_device video_dev;
++	struct v4l2_ctrl_handler ctrl_handler;
++
++	struct v4l2_fwnode_endpoint endpoint;
++
++	struct v4l2_async_subdev asd;
++
++	/* unicam cfg */
++	struct unicam_cfg cfg;
++	/* clock handle */
++	struct clk *clock;
++	/* V4l2 device */
++	struct v4l2_device v4l2_dev;
++	struct media_device mdev;
++	struct media_pad pad;
++
++	/* parent device */
++	struct platform_device *pdev;
++	/* subdevice async Notifier */
++	struct v4l2_async_notifier notifier;
++	unsigned int sequence;
++
++	/* ptr to  sub device */
++	struct v4l2_subdev *sensor;
++	/* Pad config for the sensor */
++	struct v4l2_subdev_pad_config *sensor_config;
++	/* current input at the sub device */
++	int current_input;
++
++	/* Pointer pointing to current v4l2_buffer */
++	struct unicam_buffer *cur_frm;
++	/* Pointer pointing to next v4l2_buffer */
++	struct unicam_buffer *next_frm;
++
++	/* video capture */
++	const struct unicam_fmt	*fmt;
++	/* Used to store current pixel format */
++	struct v4l2_format v_fmt;
++	/* Used to store current mbus frame format */
++	struct v4l2_mbus_framefmt m_fmt;
++
++	unsigned int virtual_channel;
++	enum v4l2_mbus_type bus_type;
++	/*
++	 * Stores bus.mipi_csi2.flags for CSI2 sensors, or
++	 * bus.mipi_csi1.strobe for CCP2.
++	 */
++	unsigned int bus_flags;
++	unsigned int max_data_lanes;
++	unsigned int active_data_lanes;
++
++	struct v4l2_rect crop;
++
++	/* Currently selected input on subdev */
++	int input;
++
++	/* Buffer queue used in video-buf */
++	struct vb2_queue buffer_queue;
++	/* Queue of filled frames */
++	struct unicam_dmaqueue dma_queue;
++	/* IRQ lock for DMA queue */
++	spinlock_t dma_queue_lock;
++	/* lock used to access this structure */
++	struct mutex lock;
++	/* Flag to denote that we are processing buffers */
++	int streaming;
++};
++
++/* Hardware access */
++#define clk_write(dev, val) writel((val) | 0x5a000000, (dev)->clk_gate_base)
++#define clk_read(dev) readl((dev)->clk_gate_base)
++
++#define reg_read(dev, offset) readl((dev)->base + (offset))
++#define reg_write(dev, offset, val) writel(val, (dev)->base + (offset))
++
++#define reg_read_field(dev, offset, mask) get_field(reg_read((dev), (offset), \
++						    mask))
++
++static inline int get_field(u32 value, u32 mask)
++{
++	return (value & mask) >> __ffs(mask);
++}
++
++static inline void set_field(u32 *valp, u32 field, u32 mask)
++{
++	u32 val = *valp;
++
++	val &= ~mask;
++	val |= (field << __ffs(mask)) & mask;
++	*valp = val;
++}
++
++static inline void reg_write_field(struct unicam_cfg *dev, u32 offset,
++				   u32 field, u32 mask)
++{
++	u32 val = reg_read((dev), (offset));
++
++	set_field(&val, field, mask);
++	reg_write((dev), (offset), val);
++}
++
++/* Power management functions */
++static inline int unicam_runtime_get(struct unicam_device *dev)
++{
++	return pm_runtime_get_sync(&dev->pdev->dev);
++}
++
++static inline void unicam_runtime_put(struct unicam_device *dev)
++{
++	pm_runtime_put_sync(&dev->pdev->dev);
++}
++
++/* Format setup functions */
++static const struct unicam_fmt *find_format_by_code(u32 code)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(formats); i++) {
++		if (formats[i].code == code)
++			return &formats[i];
++	}
++
++	return NULL;
++}
++
++static int check_mbus_format(struct unicam_device *dev,
++			     const struct unicam_fmt *format)
++{
++	struct v4l2_subdev_mbus_code_enum mbus_code;
++	int ret = 0;
++	int i;
++
++	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
++		memset(&mbus_code, 0, sizeof(mbus_code));
++		mbus_code.index = i;
++		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
++
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
++				       NULL, &mbus_code);
++
++		if (!ret && mbus_code.code == format->code)
++			return 1;
++	}
++
++	return 0;
++}
++
++static const struct unicam_fmt *find_format_by_pix(struct unicam_device *dev,
++						   u32 pixelformat)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(formats); i++) {
++		if (formats[i].fourcc == pixelformat ||
++		    formats[i].repacked_fourcc == pixelformat) {
++			if (formats[i].check_variants &&
++			    !check_mbus_format(dev, &formats[i]))
++				continue;
++			return &formats[i];
++		}
++	}
++
++	return NULL;
++}
++
++static inline unsigned int bytes_per_line(u32 width,
++					  const struct unicam_fmt *fmt,
++					  u32 v4l2_fourcc)
++{
++	if (v4l2_fourcc == fmt->repacked_fourcc)
++		/* Repacking always goes to 16bpp */
++		return ALIGN(width << 1, BPL_ALIGNMENT);
++	else
++		return ALIGN((width * fmt->depth) >> 3, BPL_ALIGNMENT);
++}
++
++static int __subdev_get_format(struct unicam_device *dev,
++			       struct v4l2_mbus_framefmt *fmt)
++{
++	struct v4l2_subdev_format sd_fmt = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++	};
++	int ret;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_config,
++			       &sd_fmt);
++	if (ret < 0)
++		return ret;
++
++	*fmt = sd_fmt.format;
++
++	unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
++		   fmt->width, fmt->height, fmt->code);
++
++	return 0;
++}
++
++static int __subdev_set_format(struct unicam_device *dev,
++			       struct v4l2_mbus_framefmt *fmt)
++{
++	struct v4l2_subdev_format sd_fmt = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++	};
++	int ret;
++
++	sd_fmt.format = *fmt;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
++			       &sd_fmt);
++	if (ret < 0)
++		return ret;
++
++	unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
++		   fmt->width, fmt->height, fmt->code);
++
++	return 0;
++}
++
++static int unicam_calc_format_size_bpl(struct unicam_device *dev,
++				       const struct unicam_fmt *fmt,
++				       struct v4l2_format *f)
++{
++	unsigned int min_bytesperline;
++
++	v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 2,
++			      &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 0,
++			      0);
++
++	min_bytesperline = bytes_per_line(f->fmt.pix.width, fmt,
++					  f->fmt.pix.pixelformat);
++
++	if (f->fmt.pix.bytesperline > min_bytesperline &&
++	    f->fmt.pix.bytesperline <= MAX_BYTESPERLINE)
++		f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline,
++						BPL_ALIGNMENT);
++	else
++		f->fmt.pix.bytesperline = min_bytesperline;
++
++	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
++
++	unicam_dbg(3, dev, "%s: fourcc: %08X size: %dx%d bpl:%d img_size:%d\n",
++		   __func__,
++		   f->fmt.pix.pixelformat,
++		   f->fmt.pix.width, f->fmt.pix.height,
++		   f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
++
++	return 0;
++}
++
++static int unicam_reset_format(struct unicam_device *dev)
++{
++	struct v4l2_mbus_framefmt mbus_fmt;
++	int ret;
++
++	ret = __subdev_get_format(dev, &mbus_fmt);
++	if (ret) {
++		unicam_err(dev, "Failed to get_format - ret %d\n", ret);
++		return ret;
++	}
++
++	if (mbus_fmt.code != dev->fmt->code) {
++		unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
++			   dev->fmt->code, mbus_fmt.code);
++		return ret;
++	}
++
++	v4l2_fill_pix_format(&dev->v_fmt.fmt.pix, &mbus_fmt);
++	dev->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++
++	unicam_calc_format_size_bpl(dev, dev->fmt, &dev->v_fmt);
++
++	dev->m_fmt = mbus_fmt;
++
++	return 0;
++}
++
++static void unicam_wr_dma_addr(struct unicam_device *dev, dma_addr_t dmaaddr)
++{
++	/*
++	 * dmaaddr should be a 32-bit address with the top two bits set to 0x3
++	 * to signify uncached access through the Videocore memory controller.
++	 */
++	BUG_ON((dmaaddr >> 30) != 0x3);
++
++	reg_write(&dev->cfg, UNICAM_IBSA0, dmaaddr);
++	reg_write(&dev->cfg, UNICAM_IBEA0,
++		  dmaaddr + dev->v_fmt.fmt.pix.sizeimage);
++}
++
++static inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
++{
++	dma_addr_t start_addr, cur_addr;
++	unsigned int stride = dev->v_fmt.fmt.pix.bytesperline;
++	struct unicam_buffer *frm = dev->cur_frm;
++
++	if (!frm)
++		return 0;
++
++	start_addr = vb2_dma_contig_plane_dma_addr(&frm->vb.vb2_buf, 0);
++	cur_addr = reg_read(&dev->cfg, UNICAM_IBWP);
++	return (unsigned int)(cur_addr - start_addr) / stride;
++}
++
++static inline void unicam_schedule_next_buffer(struct unicam_device *dev)
++{
++	struct unicam_dmaqueue *dma_q = &dev->dma_queue;
++	struct unicam_buffer *buf;
++	dma_addr_t addr;
++
++	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
++	dev->next_frm = buf;
++	list_del(&buf->list);
++
++	addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
++	unicam_wr_dma_addr(dev, addr);
++}
++
++static inline void unicam_process_buffer_complete(struct unicam_device *dev)
++{
++	dev->cur_frm->vb.field = dev->m_fmt.field;
++	dev->cur_frm->vb.sequence = dev->sequence++;
++
++	vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
++	dev->cur_frm = dev->next_frm;
++}
++
++/*
++ * unicam_isr : ISR handler for unicam capture
++ * @irq: irq number
++ * @dev_id: dev_id ptr
++ *
++ * It changes status of the captured buffer, takes next buffer from the queue
++ * and sets its address in unicam registers
++ */
++static irqreturn_t unicam_isr(int irq, void *dev)
++{
++	struct unicam_device *unicam = (struct unicam_device *)dev;
++	struct unicam_cfg *cfg = &unicam->cfg;
++	struct unicam_dmaqueue *dma_q = &unicam->dma_queue;
++	unsigned int lines_done = unicam_get_lines_done(dev);
++	unsigned int sequence = unicam->sequence;
++	int ista, sta;
++
++	/*
++	 * Don't service interrupts if not streaming.
++	 * Avoids issues if the VPU should enable the
++	 * peripheral without the kernel knowing (that
++	 * shouldn't happen, but causes issues if it does).
++	 */
++	if (!unicam->streaming)
++		return IRQ_HANDLED;
++
++	sta = reg_read(cfg, UNICAM_STA);
++	/* Write value back to clear the interrupts */
++	reg_write(cfg, UNICAM_STA, sta);
++
++	ista = reg_read(cfg, UNICAM_ISTA);
++	/* Write value back to clear the interrupts */
++	reg_write(cfg, UNICAM_ISTA, ista);
++
++	unicam_dbg(3, unicam, "ISR: ISTA: 0x%X, STA: 0x%X, sequence %d, lines done %d",
++		   ista, sta, sequence, lines_done);
++
++	if (!(sta && (UNICAM_IS | UNICAM_PI0)))
++		return IRQ_HANDLED;
++
++	if (ista & UNICAM_FSI) {
++		/*
++		 * Timestamp is to be when the first data byte was captured,
++		 * aka frame start.
++		 */
++		if (unicam->cur_frm)
++			unicam->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
++	}
++	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
++		/*
++		 * Ensure we have swapped buffers already as we can't
++		 * stop the peripheral. Overwrite the frame we've just
++		 * captured instead.
++		 */
++		if (unicam->cur_frm && unicam->cur_frm != unicam->next_frm)
++			unicam_process_buffer_complete(unicam);
++	}
++
++	/* Cannot swap buffer at frame end, there may be a race condition
++	 * where the HW does not actually swap it if the new frame has
++	 * already started.
++	 */
++	if (ista & (UNICAM_FSI | UNICAM_LCI) && !(ista & UNICAM_FEI)) {
++		spin_lock(&unicam->dma_queue_lock);
++		if (!list_empty(&dma_q->active) &&
++		    unicam->cur_frm == unicam->next_frm)
++			unicam_schedule_next_buffer(unicam);
++		spin_unlock(&unicam->dma_queue_lock);
++	}
++
++	if (reg_read(&unicam->cfg, UNICAM_ICTL) & UNICAM_FCM) {
++		/* Switch out of trigger mode if selected */
++		reg_write_field(&unicam->cfg, UNICAM_ICTL, 1, UNICAM_TFC);
++		reg_write_field(&unicam->cfg, UNICAM_ICTL, 0, UNICAM_FCM);
++	}
++	return IRQ_HANDLED;
++}
++
++static int unicam_querycap(struct file *file, void *priv,
++			   struct v4l2_capability *cap)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	strlcpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
++	strlcpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
++
++	snprintf(cap->bus_info, sizeof(cap->bus_info),
++		 "platform:%s", dev->v4l2_dev.name);
++
++	return 0;
++}
++
++static int unicam_enum_fmt_vid_cap(struct file *file, void  *priv,
++				   struct v4l2_fmtdesc *f)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	struct v4l2_subdev_mbus_code_enum mbus_code;
++	const struct unicam_fmt *fmt = NULL;
++	int index = 0;
++	int ret = 0;
++	int i;
++
++	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
++		memset(&mbus_code, 0, sizeof(mbus_code));
++		mbus_code.index = i;
++
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
++				       NULL, &mbus_code);
++		if (ret < 0) {
++			unicam_dbg(2, dev,
++				   "subdev->enum_mbus_code idx %d returned %d - index invalid\n",
++				   i, ret);
++			return -EINVAL;
++		}
++
++		fmt = find_format_by_code(mbus_code.code);
++		if (fmt) {
++			if (fmt->fourcc) {
++				if (index == f->index) {
++					f->pixelformat = fmt->fourcc;
++					break;
++				}
++				index++;
++			}
++			if (fmt->repacked_fourcc) {
++				if (index == f->index) {
++					f->pixelformat = fmt->repacked_fourcc;
++					break;
++				}
++				index++;
++			}
++		}
++	}
++
++	return 0;
++}
++
++static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	*f = dev->v_fmt;
++
++	return 0;
++}
++
++static
++const struct unicam_fmt *get_first_supported_format(struct unicam_device *dev)
++{
++	struct v4l2_subdev_mbus_code_enum mbus_code;
++	const struct unicam_fmt *fmt = NULL;
++	int ret;
++	int j;
++
++	for (j = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++j) {
++		memset(&mbus_code, 0, sizeof(mbus_code));
++		mbus_code.index = j;
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
++				       &mbus_code);
++		if (ret < 0) {
++			unicam_dbg(2, dev,
++				   "subdev->enum_mbus_code idx %d returned %d - continue\n",
++				   j, ret);
++			continue;
++		}
++
++		unicam_dbg(2, dev, "subdev %s: code: 0x%08x idx: %d\n",
++			   dev->sensor->name, mbus_code.code, j);
++
++		fmt = find_format_by_code(mbus_code.code);
++		unicam_dbg(2, dev, "fmt 0x%08x returned as %p, V4L2 FOURCC 0x%08x, csi_dt 0x%02x\n",
++			   mbus_code.code, fmt, fmt ? fmt->fourcc : 0,
++			   fmt ? fmt->csi_dt : 0);
++		if (fmt)
++			return fmt;
++	}
++
++	return NULL;
++}
++
++static int unicam_try_fmt_vid_cap(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	struct v4l2_subdev_format sd_fmt = {
++		.which = V4L2_SUBDEV_FORMAT_TRY,
++	};
++	struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
++	const struct unicam_fmt *fmt;
++	int ret;
++
++	fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
++	if (!fmt) {
++		/* Pixel format not supported by unicam. Choose the first
++		 * supported format, and let the sensor choose something else.
++		 */
++		unicam_dbg(3, dev, "Fourcc format (0x%08x) not found. Use first format.\n",
++			   f->fmt.pix.pixelformat);
++
++		fmt = &formats[0];
++		f->fmt.pix.pixelformat = fmt->fourcc;
++	}
++
++	v4l2_fill_mbus_format(mbus_fmt, &f->fmt.pix, fmt->code);
++	/*
++	 * No support for receiving interlaced video, so never
++	 * request it from the sensor subdev.
++	 */
++	mbus_fmt->field = V4L2_FIELD_NONE;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
++			       &sd_fmt);
++	if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
++		return ret;
++
++	if (mbus_fmt->field != V4L2_FIELD_NONE)
++		unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
++
++	v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
++	if (mbus_fmt->code != fmt->code) {
++		/* Sensor has returned an alternate format */
++		fmt = find_format_by_code(mbus_fmt->code);
++		if (!fmt) {
++			/* The alternate format is one unicam can't support.
++			 * Find the first format that is supported by both, and
++			 * then set that.
++			 */
++			fmt = get_first_supported_format(dev);
++			mbus_fmt->code = fmt->code;
++
++			ret = v4l2_subdev_call(dev->sensor, pad, set_fmt,
++					       dev->sensor_config, &sd_fmt);
++			if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
++				return ret;
++
++			if (mbus_fmt->field != V4L2_FIELD_NONE)
++				unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
++
++			v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
++
++			if (mbus_fmt->code != fmt->code) {
++				/* We've set a format that the sensor reports
++				 * as being supported, but it refuses to set it.
++				 * Not much else we can do.
++				 * Assume that the sensor driver may accept the
++				 * format when it is set (rather than tried).
++				 */
++				unicam_err(dev, "Sensor won't accept default format, and Unicam can't support sensor default\n");
++			}
++		}
++
++		if (fmt->fourcc)
++			f->fmt.pix.pixelformat = fmt->fourcc;
++		else
++			f->fmt.pix.pixelformat = fmt->repacked_fourcc;
++	}
++
++	return unicam_calc_format_size_bpl(dev, fmt, f);
++}
++
++static int unicam_s_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	struct vb2_queue *q = &dev->buffer_queue;
++	struct v4l2_mbus_framefmt mbus_fmt = {0};
++	const struct unicam_fmt *fmt;
++	int ret;
++
++	if (vb2_is_busy(q))
++		return -EBUSY;
++
++	ret = unicam_try_fmt_vid_cap(file, priv, f);
++	if (ret < 0)
++		return ret;
++
++	fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
++	if (!fmt) {
++		/* Unknown pixel format - adopt a default.
++		 * This shouldn't happen as try_fmt should have resolved any
++		 * issues first.
++		 */
++		fmt = get_first_supported_format(dev);
++		if (!fmt)
++			/* It shouldn't be possible to get here with no
++			 * supported formats
++			 */
++			return -EINVAL;
++		f->fmt.pix.pixelformat = fmt->fourcc;
++		return -EINVAL;
++	}
++
++	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
++
++	ret = __subdev_set_format(dev, &mbus_fmt);
++	if (ret) {
++		unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
++			   __func__, ret);
++		return ret;
++	}
++
++	/* Just double check nothing has gone wrong */
++	if (mbus_fmt.code != fmt->code) {
++		unicam_dbg(3, dev,
++			   "%s subdev changed format on us, this should not happen\n",
++			   __func__);
++		return -EINVAL;
++	}
++
++	dev->fmt = fmt;
++	dev->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
++	dev->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
++	unicam_reset_format(dev);
++
++	unicam_dbg(3, dev, "%s %dx%d, mbus_fmt 0x%08X, V4L2 pix 0x%08X.\n",
++		   __func__, dev->v_fmt.fmt.pix.width,
++		   dev->v_fmt.fmt.pix.height, mbus_fmt.code,
++		   dev->v_fmt.fmt.pix.pixelformat);
++
++	*f = dev->v_fmt;
++
++	return 0;
++}
++
++static int unicam_queue_setup(struct vb2_queue *vq,
++			      unsigned int *nbuffers,
++			      unsigned int *nplanes,
++			      unsigned int sizes[],
++			      struct device *alloc_devs[])
++{
++	struct unicam_device *dev = vb2_get_drv_priv(vq);
++	unsigned int size = dev->v_fmt.fmt.pix.sizeimage;
++
++	if (vq->num_buffers + *nbuffers < 3)
++		*nbuffers = 3 - vq->num_buffers;
++
++	if (*nplanes) {
++		if (sizes[0] < size) {
++			unicam_err(dev, "sizes[0] %i < size %u\n", sizes[0],
++				   size);
++			return -EINVAL;
++		}
++		size = sizes[0];
++	}
++
++	*nplanes = 1;
++	sizes[0] = size;
++
++	return 0;
++}
++
++static int unicam_buffer_prepare(struct vb2_buffer *vb)
++{
++	struct unicam_device *dev = vb2_get_drv_priv(vb->vb2_queue);
++	struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
++					      vb.vb2_buf);
++	unsigned long size;
++
++	if (WARN_ON(!dev->fmt))
++		return -EINVAL;
++
++	size = dev->v_fmt.fmt.pix.sizeimage;
++	if (vb2_plane_size(vb, 0) < size) {
++		unicam_err(dev, "data will not fit into plane (%lu < %lu)\n",
++			   vb2_plane_size(vb, 0), size);
++		return -EINVAL;
++	}
++
++	vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
++	return 0;
++}
++
++static void unicam_buffer_queue(struct vb2_buffer *vb)
++{
++	struct unicam_device *dev = vb2_get_drv_priv(vb->vb2_queue);
++	struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
++					      vb.vb2_buf);
++	struct unicam_dmaqueue *dma_queue = &dev->dma_queue;
++	unsigned long flags = 0;
++
++	spin_lock_irqsave(&dev->dma_queue_lock, flags);
++	list_add_tail(&buf->list, &dma_queue->active);
++	spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
++}
++
++static void unicam_set_packing_config(struct unicam_device *dev)
++{
++	int pack, unpack;
++	u32 val;
++
++	if (dev->v_fmt.fmt.pix.pixelformat == dev->fmt->fourcc) {
++		unpack = UNICAM_PUM_NONE;
++		pack = UNICAM_PPM_NONE;
++	} else {
++		switch (dev->fmt->depth) {
++		case 8:
++			unpack = UNICAM_PUM_UNPACK8;
++			break;
++		case 10:
++			unpack = UNICAM_PUM_UNPACK10;
++			break;
++		case 12:
++			unpack = UNICAM_PUM_UNPACK12;
++			break;
++		case 14:
++			unpack = UNICAM_PUM_UNPACK14;
++			break;
++		case 16:
++			unpack = UNICAM_PUM_UNPACK16;
++			break;
++		default:
++			unpack = UNICAM_PUM_NONE;
++			break;
++		}
++
++		/* Repacking is always to 16bpp */
++		pack = UNICAM_PPM_PACK16;
++	}
++
++	val = 0;
++	set_field(&val, unpack, UNICAM_PUM_MASK);
++	set_field(&val, pack, UNICAM_PPM_MASK);
++	reg_write(&dev->cfg, UNICAM_IPIPE, val);
++}
++
++static void unicam_cfg_image_id(struct unicam_device *dev)
++{
++	struct unicam_cfg *cfg = &dev->cfg;
++
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		/* CSI2 mode */
++		reg_write(cfg, UNICAM_IDI0,
++			  (dev->virtual_channel << 6) | dev->fmt->csi_dt);
++	} else {
++		/* CCP2 mode */
++		reg_write(cfg, UNICAM_IDI0, (0x80 | dev->fmt->csi_dt));
++	}
++}
++
++static void unicam_start_rx(struct unicam_device *dev, unsigned long addr)
++{
++	struct unicam_cfg *cfg = &dev->cfg;
++	int line_int_freq = dev->v_fmt.fmt.pix.height >> 2;
++	unsigned int i;
++	u32 val;
++
++	if (line_int_freq < 128)
++		line_int_freq = 128;
++
++	/* Enable lane clocks */
++	val = 1;
++	for (i = 0; i < dev->active_data_lanes; i++)
++		val = val << 2 | 1;
++	clk_write(cfg, val);
++
++	/* Basic init */
++	reg_write(cfg, UNICAM_CTRL, UNICAM_MEM);
++
++	/* Enable analogue control, and leave in reset. */
++	val = UNICAM_AR;
++	set_field(&val, 7, UNICAM_CTATADJ_MASK);
++	set_field(&val, 7, UNICAM_PTATADJ_MASK);
++	reg_write(cfg, UNICAM_ANA, val);
++	usleep_range(1000, 2000);
++
++	/* Come out of reset */
++	reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_AR);
++
++	/* Peripheral reset */
++	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
++	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
++
++	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
++
++	/* Enable Rx control. */
++	val = reg_read(cfg, UNICAM_CTRL);
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		set_field(&val, UNICAM_CPM_CSI2, UNICAM_CPM_MASK);
++		set_field(&val, UNICAM_DCM_STROBE, UNICAM_DCM_MASK);
++	} else {
++		set_field(&val, UNICAM_CPM_CCP2, UNICAM_CPM_MASK);
++		set_field(&val, dev->bus_flags, UNICAM_DCM_MASK);
++	}
++	/* Packet framer timeout */
++	set_field(&val, 0xf, UNICAM_PFT_MASK);
++	set_field(&val, 128, UNICAM_OET_MASK);
++	reg_write(cfg, UNICAM_CTRL, val);
++
++	reg_write(cfg, UNICAM_IHWIN, 0);
++	reg_write(cfg, UNICAM_IVWIN, 0);
++
++	/* AXI bus access QoS setup */
++	val = reg_read(&dev->cfg, UNICAM_PRI);
++	set_field(&val, 0, UNICAM_BL_MASK);
++	set_field(&val, 0, UNICAM_BS_MASK);
++	set_field(&val, 0xe, UNICAM_PP_MASK);
++	set_field(&val, 8, UNICAM_NP_MASK);
++	set_field(&val, 2, UNICAM_PT_MASK);
++	set_field(&val, 1, UNICAM_PE);
++	reg_write(cfg, UNICAM_PRI, val);
++
++	reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_DDL);
++
++	/* Always start in trigger frame capture mode (UNICAM_FCM set) */
++	val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM;
++	set_field(&val,  line_int_freq, UNICAM_LCIE_MASK);
++	reg_write(cfg, UNICAM_ICTL, val);
++	reg_write(cfg, UNICAM_STA, UNICAM_STA_MASK_ALL);
++	reg_write(cfg, UNICAM_ISTA, UNICAM_ISTA_MASK_ALL);
++
++	/* tclk_term_en */
++	reg_write_field(cfg, UNICAM_CLT, 2, UNICAM_CLT1_MASK);
++	/* tclk_settle */
++	reg_write_field(cfg, UNICAM_CLT, 6, UNICAM_CLT2_MASK);
++	/* td_term_en */
++	reg_write_field(cfg, UNICAM_DLT, 2, UNICAM_DLT1_MASK);
++	/* ths_settle */
++	reg_write_field(cfg, UNICAM_DLT, 6, UNICAM_DLT2_MASK);
++	/* trx_enable */
++	reg_write_field(cfg, UNICAM_DLT, 0, UNICAM_DLT3_MASK);
++
++	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_SOE);
++
++	/* Packet compare setup - required to avoid missing frame ends */
++	val = 0;
++	set_field(&val, 1, UNICAM_PCE);
++	set_field(&val, 1, UNICAM_GI);
++	set_field(&val, 1, UNICAM_CPH);
++	set_field(&val, 0, UNICAM_PCVC_MASK);
++	set_field(&val, 1, UNICAM_PCDT_MASK);
++	reg_write(cfg, UNICAM_CMP0, val);
++
++	/* Enable clock lane and set up terminations */
++	val = 0;
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		/* CSI2 */
++		set_field(&val, 1, UNICAM_CLE);
++		set_field(&val, 1, UNICAM_CLLPE);
++		if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
++			set_field(&val, 1, UNICAM_CLTRE);
++			set_field(&val, 1, UNICAM_CLHSE);
++		}
++	} else {
++		/* CCP2 */
++		set_field(&val, 1, UNICAM_CLE);
++		set_field(&val, 1, UNICAM_CLHSE);
++		set_field(&val, 1, UNICAM_CLTRE);
++	}
++	reg_write(cfg, UNICAM_CLK, val);
++
++	/*
++	 * Enable required data lanes with appropriate terminations.
++	 * The same value needs to be written to UNICAM_DATn registers for
++	 * the active lanes, and 0 for inactive ones.
++	 */
++	val = 0;
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		/* CSI2 */
++		set_field(&val, 1, UNICAM_DLE);
++		set_field(&val, 1, UNICAM_DLLPE);
++		if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
++			set_field(&val, 1, UNICAM_DLTRE);
++			set_field(&val, 1, UNICAM_DLHSE);
++		}
++	} else {
++		/* CCP2 */
++		set_field(&val, 1, UNICAM_DLE);
++		set_field(&val, 1, UNICAM_DLHSE);
++		set_field(&val, 1, UNICAM_DLTRE);
++	}
++	reg_write(cfg, UNICAM_DAT0, val);
++
++	if (dev->active_data_lanes == 1)
++		val = 0;
++	reg_write(cfg, UNICAM_DAT1, val);
++
++	if (dev->max_data_lanes > 2) {
++		/*
++		 * Registers UNICAM_DAT2 and UNICAM_DAT3 only valid if the
++		 * instance supports more than 2 data lanes.
++		 */
++		if (dev->active_data_lanes == 2)
++			val = 0;
++		reg_write(cfg, UNICAM_DAT2, val);
++
++		if (dev->active_data_lanes == 3)
++			val = 0;
++		reg_write(cfg, UNICAM_DAT3, val);
++	}
++
++	reg_write(&dev->cfg, UNICAM_IBLS, dev->v_fmt.fmt.pix.bytesperline);
++	unicam_wr_dma_addr(dev, addr);
++	unicam_set_packing_config(dev);
++	unicam_cfg_image_id(dev);
++
++	/* Disabled embedded data */
++	val = 0;
++	set_field(&val, 0, UNICAM_EDL_MASK);
++	reg_write(cfg, UNICAM_DCS, val);
++
++	val = reg_read(cfg, UNICAM_MISC);
++	set_field(&val, 1, UNICAM_FL0);
++	set_field(&val, 1, UNICAM_FL1);
++	reg_write(cfg, UNICAM_MISC, val);
++
++	/* Enable peripheral */
++	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPE);
++
++	/* Load image pointers */
++	reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_LIP_MASK);
++
++	/*
++	 * Enable trigger only for the first frame to
++	 * sync correctly to the FS from the source.
++	 */
++	reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_TFC);
++}
++
++static void unicam_disable(struct unicam_device *dev)
++{
++	struct unicam_cfg *cfg = &dev->cfg;
++
++	/* Analogue lane control disable */
++	reg_write_field(cfg, UNICAM_ANA, 1, UNICAM_DDL);
++
++	/* Stop the output engine */
++	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_SOE);
++
++	/* Disable the data lanes. */
++	reg_write(cfg, UNICAM_DAT0, 0);
++	reg_write(cfg, UNICAM_DAT1, 0);
++
++	if (dev->max_data_lanes > 2) {
++		reg_write(cfg, UNICAM_DAT2, 0);
++		reg_write(cfg, UNICAM_DAT3, 0);
++	}
++
++	/* Peripheral reset */
++	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
++	usleep_range(50, 100);
++	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
++
++	/* Disable peripheral */
++	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
++
++	/* Disable all lane clocks */
++	clk_write(cfg, 0);
++}
++
++static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count)
++{
++	struct unicam_device *dev = vb2_get_drv_priv(vq);
++	struct unicam_dmaqueue *dma_q = &dev->dma_queue;
++	struct unicam_buffer *buf, *tmp;
++	unsigned long addr = 0;
++	unsigned long flags;
++	int ret;
++
++	spin_lock_irqsave(&dev->dma_queue_lock, flags);
++	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
++	dev->cur_frm = buf;
++	dev->next_frm = buf;
++	list_del(&buf->list);
++	spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
++
++	addr = vb2_dma_contig_plane_dma_addr(&dev->cur_frm->vb.vb2_buf, 0);
++	dev->sequence = 0;
++
++	ret = unicam_runtime_get(dev);
++	if (ret < 0) {
++		unicam_dbg(3, dev, "unicam_runtime_get failed\n");
++		goto err_release_buffers;
++	}
++
++	dev->active_data_lanes = dev->max_data_lanes;
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY &&
++	    v4l2_subdev_has_op(dev->sensor, video, g_mbus_config)) {
++		struct v4l2_mbus_config mbus_config;
++
++		ret = v4l2_subdev_call(dev->sensor, video, g_mbus_config,
++				       &mbus_config);
++		if (ret < 0) {
++			unicam_dbg(3, dev, "g_mbus_config failed\n");
++			goto err_pm_put;
++		}
++
++		dev->active_data_lanes =
++			(mbus_config.flags & V4L2_MBUS_CSI2_LANE_MASK) >>
++					__ffs(V4L2_MBUS_CSI2_LANE_MASK);
++		if (!dev->active_data_lanes)
++			dev->active_data_lanes = dev->max_data_lanes;
++	}
++	if (dev->active_data_lanes > dev->max_data_lanes) {
++		unicam_err(dev, "Device has requested %u data lanes, which is >%u configured in DT\n",
++			   dev->active_data_lanes, dev->max_data_lanes);
++		ret = -EINVAL;
++		goto err_pm_put;
++	}
++
++	unicam_dbg(1, dev, "Running with %u data lanes\n",
++		   dev->active_data_lanes);
++
++	ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
++	if (ret) {
++		unicam_err(dev, "failed to set up clock\n");
++		goto err_pm_put;
++	}
++
++	ret = clk_prepare_enable(dev->clock);
++	if (ret) {
++		unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
++		goto err_pm_put;
++	}
++	dev->streaming = 1;
++
++	unicam_start_rx(dev, addr);
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_stream, 1);
++	if (ret < 0) {
++		unicam_err(dev, "stream on failed in subdev\n");
++		goto err_disable_unicam;
++	}
++
++	return 0;
++
++err_disable_unicam:
++	unicam_disable(dev);
++	clk_disable_unprepare(dev->clock);
++err_pm_put:
++	unicam_runtime_put(dev);
++err_release_buffers:
++	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
++		list_del(&buf->list);
++		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
++	}
++	if (dev->cur_frm != dev->next_frm)
++		vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
++				VB2_BUF_STATE_QUEUED);
++	vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
++	dev->next_frm = NULL;
++	dev->cur_frm = NULL;
++
++	return ret;
++}
++
++static void unicam_stop_streaming(struct vb2_queue *vq)
++{
++	struct unicam_device *dev = vb2_get_drv_priv(vq);
++	struct unicam_dmaqueue *dma_q = &dev->dma_queue;
++	struct unicam_buffer *buf, *tmp;
++	unsigned long flags;
++
++	if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
++		unicam_err(dev, "stream off failed in subdev\n");
++
++	unicam_disable(dev);
++
++	/* Release all active buffers */
++	spin_lock_irqsave(&dev->dma_queue_lock, flags);
++	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
++		list_del(&buf->list);
++		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
++	}
++
++	if (dev->cur_frm == dev->next_frm) {
++		vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
++	} else {
++		vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
++		vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
++				VB2_BUF_STATE_ERROR);
++	}
++	dev->cur_frm = NULL;
++	dev->next_frm = NULL;
++	spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
++
++	clk_disable_unprepare(dev->clock);
++	unicam_runtime_put(dev);
++}
++
++static int unicam_enum_input(struct file *file, void *priv,
++			     struct v4l2_input *inp)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	if (inp->index != 0)
++		return -EINVAL;
++
++	inp->type = V4L2_INPUT_TYPE_CAMERA;
++	if (v4l2_subdev_has_op(dev->sensor, video, s_dv_timings)) {
++		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
++		inp->std = 0;
++	} else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
++		inp->capabilities = V4L2_IN_CAP_STD;
++		if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std)
++					< 0)
++			inp->std = V4L2_STD_ALL;
++	} else {
++		inp->capabilities = 0;
++		inp->std = 0;
++	}
++	sprintf(inp->name, "Camera 0");
++	return 0;
++}
++
++static int unicam_g_input(struct file *file, void *priv, unsigned int *i)
++{
++	*i = 0;
++
++	return 0;
++}
++
++static int unicam_s_input(struct file *file, void *priv, unsigned int i)
++{
++	/*
++	 * FIXME: Ideally we would like to be able to query the source
++	 * subdevice for information over the input connectors it supports,
++	 * and map that through in to a call to video_ops->s_routing.
++	 * There is no infrastructure support for defining that within
++	 * devicetree at present. Until that is implemented we can't
++	 * map a user physical connector number to s_routing input number.
++	 */
++	if (i > 0)
++		return -EINVAL;
++
++	return 0;
++}
++
++static int unicam_querystd(struct file *file, void *priv,
++			   v4l2_std_id *std)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, video, querystd, std);
++}
++
++static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, video, g_std, std);
++}
++
++static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	int ret;
++	v4l2_std_id current_std;
++
++	ret = v4l2_subdev_call(dev->sensor, video, g_std, &current_std);
++	if (ret)
++		return ret;
++
++	if (std == current_std)
++		return 0;
++
++	if (vb2_is_busy(&dev->buffer_queue))
++		return -EBUSY;
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
++
++	/* Force recomputation of bytesperline */
++	dev->v_fmt.fmt.pix.bytesperline = 0;
++
++	unicam_reset_format(dev);
++
++	return ret;
++}
++
++static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
++}
++
++static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
++}
++
++static int unicam_enum_framesizes(struct file *file, void *priv,
++				  struct v4l2_frmsizeenum *fsize)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	const struct unicam_fmt *fmt;
++	struct v4l2_subdev_frame_size_enum fse;
++	int ret;
++
++	/* check for valid format */
++	fmt = find_format_by_pix(dev, fsize->pixel_format);
++	if (!fmt) {
++		unicam_dbg(3, dev, "Invalid pixel code: %x\n",
++			   fsize->pixel_format);
++		return -EINVAL;
++	}
++
++	fse.index = fsize->index;
++	fse.pad = 0;
++	fse.code = fmt->code;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
++	if (ret)
++		return ret;
++
++	unicam_dbg(1, dev, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
++		   __func__, fse.index, fse.code, fse.min_width, fse.max_width,
++		   fse.min_height, fse.max_height);
++
++	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
++	fsize->discrete.width = fse.max_width;
++	fsize->discrete.height = fse.max_height;
++
++	return 0;
++}
++
++static int unicam_enum_frameintervals(struct file *file, void *priv,
++				      struct v4l2_frmivalenum *fival)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	const struct unicam_fmt *fmt;
++	struct v4l2_subdev_frame_interval_enum fie = {
++		.index = fival->index,
++		.width = fival->width,
++		.height = fival->height,
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++	};
++	int ret;
++
++	fmt = find_format_by_pix(dev, fival->pixel_format);
++	if (!fmt)
++		return -EINVAL;
++
++	fie.code = fmt->code;
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_interval,
++			       NULL, &fie);
++	if (ret)
++		return ret;
++
++	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
++	fival->discrete = fie.interval;
++
++	return 0;
++}
++
++static int unicam_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_g_parm_cap(video_devdata(file), dev->sensor, a);
++}
++
++static int unicam_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_s_parm_cap(video_devdata(file), dev->sensor, a);
++}
++
++static int unicam_g_dv_timings(struct file *file, void *priv,
++			       struct v4l2_dv_timings *timings)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
++}
++
++static int unicam_s_dv_timings(struct file *file, void *priv,
++			       struct v4l2_dv_timings *timings)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	struct v4l2_dv_timings current_timings;
++	int ret;
++
++	ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
++			       &current_timings);
++
++	if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
++		return 0;
++
++	if (vb2_is_busy(&dev->buffer_queue))
++		return -EBUSY;
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
++
++	/* Force recomputation of bytesperline */
++	dev->v_fmt.fmt.pix.bytesperline = 0;
++
++	unicam_reset_format(dev);
++
++	return ret;
++}
++
++static int unicam_query_dv_timings(struct file *file, void *priv,
++				   struct v4l2_dv_timings *timings)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
++}
++
++static int unicam_enum_dv_timings(struct file *file, void *priv,
++				  struct v4l2_enum_dv_timings *timings)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
++}
++
++static int unicam_dv_timings_cap(struct file *file, void *priv,
++				 struct v4l2_dv_timings_cap *cap)
++{
++	struct unicam_device *dev = video_drvdata(file);
++
++	return v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
++}
++
++static int unicam_subscribe_event(struct v4l2_fh *fh,
++				  const struct v4l2_event_subscription *sub)
++{
++	switch (sub->type) {
++	case V4L2_EVENT_SOURCE_CHANGE:
++		return v4l2_event_subscribe(fh, sub, 4, NULL);
++	}
++
++	return v4l2_ctrl_subscribe_event(fh, sub);
++}
++
++static int unicam_log_status(struct file *file, void *fh)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_cfg *cfg = &dev->cfg;
++	u32 reg;
++
++	/* status for sub devices */
++	v4l2_device_call_all(&dev->v4l2_dev, 0, core, log_status);
++
++	unicam_info(dev, "-----Receiver status-----\n");
++	unicam_info(dev, "V4L2 width/height:   %ux%u\n",
++		    dev->v_fmt.fmt.pix.width, dev->v_fmt.fmt.pix.height);
++	unicam_info(dev, "Mediabus format:     %08x\n", dev->fmt->code);
++	unicam_info(dev, "V4L2 format:         %08x\n",
++		    dev->v_fmt.fmt.pix.pixelformat);
++	reg = reg_read(&dev->cfg, UNICAM_IPIPE);
++	unicam_info(dev, "Unpacking/packing:   %u / %u\n",
++		    get_field(reg, UNICAM_PUM_MASK),
++		    get_field(reg, UNICAM_PPM_MASK));
++	unicam_info(dev, "----Live data----\n");
++	unicam_info(dev, "Programmed stride:   %4u\n",
++		    reg_read(cfg, UNICAM_IBLS));
++	unicam_info(dev, "Detected resolution: %ux%u\n",
++		    reg_read(cfg, UNICAM_IHSTA),
++		    reg_read(cfg, UNICAM_IVSTA));
++	unicam_info(dev, "Write pointer:       %08x\n",
++		    reg_read(cfg, UNICAM_IBWP));
++
++	return 0;
++}
++
++static void unicam_notify(struct v4l2_subdev *sd,
++			  unsigned int notification, void *arg)
++{
++	struct unicam_device *dev =
++		container_of(sd->v4l2_dev, struct unicam_device, v4l2_dev);
++
++	switch (notification) {
++	case V4L2_DEVICE_NOTIFY_EVENT:
++		v4l2_event_queue(&dev->video_dev, arg);
++		break;
++	default:
++		break;
++	}
++}
++
++static const struct vb2_ops unicam_video_qops = {
++	.wait_prepare		= vb2_ops_wait_prepare,
++	.wait_finish		= vb2_ops_wait_finish,
++	.queue_setup		= unicam_queue_setup,
++	.buf_prepare		= unicam_buffer_prepare,
++	.buf_queue		= unicam_buffer_queue,
++	.start_streaming	= unicam_start_streaming,
++	.stop_streaming		= unicam_stop_streaming,
++};
++
++/*
++ * unicam_open : This function is based on the v4l2_fh_open helper function.
++ * It has been augmented to handle sensor subdevice power management,
++ */
++static int unicam_open(struct file *file)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	int ret;
++
++	mutex_lock(&dev->lock);
++
++	ret = v4l2_fh_open(file);
++	if (ret) {
++		unicam_err(dev, "v4l2_fh_open failed\n");
++		goto unlock;
++	}
++
++	if (!v4l2_fh_is_singular_file(file))
++		goto unlock;
++
++	ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
++	if (ret < 0 && ret != -ENOIOCTLCMD) {
++		v4l2_fh_release(file);
++		goto unlock;
++	}
++
++	ret = 0;
++
++unlock:
++	mutex_unlock(&dev->lock);
++	return ret;
++}
++
++static int unicam_release(struct file *file)
++{
++	struct unicam_device *dev = video_drvdata(file);
++	struct v4l2_subdev *sd = dev->sensor;
++	bool fh_singular;
++	int ret;
++
++	mutex_lock(&dev->lock);
++
++	fh_singular = v4l2_fh_is_singular_file(file);
++
++	ret = _vb2_fop_release(file, NULL);
++
++	if (fh_singular)
++		v4l2_subdev_call(sd, core, s_power, 0);
++
++	mutex_unlock(&dev->lock);
++
++	return ret;
++}
++
++/* unicam capture driver file operations */
++static const struct v4l2_file_operations unicam_fops = {
++	.owner		= THIS_MODULE,
++	.open           = unicam_open,
++	.release        = unicam_release,
++	.read		= vb2_fop_read,
++	.poll		= vb2_fop_poll,
++	.unlocked_ioctl	= video_ioctl2,
++	.mmap		= vb2_fop_mmap,
++};
++
++/* unicam capture ioctl operations */
++static const struct v4l2_ioctl_ops unicam_ioctl_ops = {
++	.vidioc_querycap		= unicam_querycap,
++	.vidioc_enum_fmt_vid_cap	= unicam_enum_fmt_vid_cap,
++	.vidioc_g_fmt_vid_cap		= unicam_g_fmt_vid_cap,
++	.vidioc_s_fmt_vid_cap		= unicam_s_fmt_vid_cap,
++	.vidioc_try_fmt_vid_cap		= unicam_try_fmt_vid_cap,
++
++	.vidioc_enum_input		= unicam_enum_input,
++	.vidioc_g_input			= unicam_g_input,
++	.vidioc_s_input			= unicam_s_input,
++
++	.vidioc_querystd		= unicam_querystd,
++	.vidioc_s_std			= unicam_s_std,
++	.vidioc_g_std			= unicam_g_std,
++
++	.vidioc_g_edid			= unicam_g_edid,
++	.vidioc_s_edid			= unicam_s_edid,
++
++	.vidioc_enum_framesizes		= unicam_enum_framesizes,
++	.vidioc_enum_frameintervals	= unicam_enum_frameintervals,
++
++	.vidioc_g_parm			= unicam_g_parm,
++	.vidioc_s_parm			= unicam_s_parm,
++
++	.vidioc_s_dv_timings		= unicam_s_dv_timings,
++	.vidioc_g_dv_timings		= unicam_g_dv_timings,
++	.vidioc_query_dv_timings	= unicam_query_dv_timings,
++	.vidioc_enum_dv_timings		= unicam_enum_dv_timings,
++	.vidioc_dv_timings_cap		= unicam_dv_timings_cap,
++
++	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
++	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
++	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
++	.vidioc_querybuf		= vb2_ioctl_querybuf,
++	.vidioc_qbuf			= vb2_ioctl_qbuf,
++	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
++	.vidioc_expbuf			= vb2_ioctl_expbuf,
++	.vidioc_streamon		= vb2_ioctl_streamon,
++	.vidioc_streamoff		= vb2_ioctl_streamoff,
++
++	.vidioc_log_status		= unicam_log_status,
++	.vidioc_subscribe_event		= unicam_subscribe_event,
++	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
++};
++
++static int
++unicam_async_bound(struct v4l2_async_notifier *notifier,
++		   struct v4l2_subdev *subdev,
++		   struct v4l2_async_subdev *asd)
++{
++	struct unicam_device *unicam = container_of(notifier->v4l2_dev,
++					       struct unicam_device, v4l2_dev);
++
++	if (unicam->sensor) {
++		unicam_info(unicam, "Rejecting subdev %s (Already set!!)",
++			    subdev->name);
++		return 0;
++	}
++
++	unicam->sensor = subdev;
++	unicam_dbg(1, unicam, "Using sensor %s for capture\n", subdev->name);
++
++	return 0;
++}
++
++static int unicam_probe_complete(struct unicam_device *unicam)
++{
++	struct video_device *vdev;
++	struct vb2_queue *q;
++	struct v4l2_mbus_framefmt mbus_fmt = {0};
++	const struct unicam_fmt *fmt;
++	int ret;
++
++	v4l2_set_subdev_hostdata(unicam->sensor, unicam);
++
++	unicam->v4l2_dev.notify = unicam_notify;
++
++	unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
++	if (!unicam->sensor_config)
++		return -ENOMEM;
++
++	ret = __subdev_get_format(unicam, &mbus_fmt);
++	if (ret) {
++		unicam_err(unicam, "Failed to get_format - ret %d\n", ret);
++		return ret;
++	}
++
++	fmt = find_format_by_code(mbus_fmt.code);
++	if (!fmt) {
++		/* Find the first format that the sensor and unicam both
++		 * support
++		 */
++		fmt = get_first_supported_format(unicam);
++
++		if (!fmt)
++			/* No compatible formats */
++			return -EINVAL;
++
++		mbus_fmt.code = fmt->code;
++		ret = __subdev_set_format(unicam, &mbus_fmt);
++		if (ret)
++			return -EINVAL;
++	}
++	if (mbus_fmt.field != V4L2_FIELD_NONE) {
++		/* Interlaced not supported - disable it now. */
++		mbus_fmt.field = V4L2_FIELD_NONE;
++		ret = __subdev_set_format(unicam, &mbus_fmt);
++		if (ret)
++			return -EINVAL;
++	}
++
++	unicam->fmt = fmt;
++	if (fmt->fourcc)
++		unicam->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++	else
++		unicam->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
++
++	/* Read current subdev format */
++	unicam_reset_format(unicam);
++
++	if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
++		v4l2_std_id tvnorms;
++
++		if (WARN_ON(!v4l2_subdev_has_op(unicam->sensor, video,
++						g_tvnorms)))
++			/*
++			 * Subdevice should not advertise s_std but not
++			 * g_tvnorms
++			 */
++			return -EINVAL;
++
++		ret = v4l2_subdev_call(unicam->sensor, video,
++				       g_tvnorms, &tvnorms);
++		if (WARN_ON(ret))
++			return -EINVAL;
++		unicam->video_dev.tvnorms |= tvnorms;
++	}
++
++	spin_lock_init(&unicam->dma_queue_lock);
++	mutex_init(&unicam->lock);
++
++	/* Add controls from the subdevice */
++	ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
++				    unicam->sensor->ctrl_handler, NULL, true);
++	if (ret < 0)
++		return ret;
++
++	q = &unicam->buffer_queue;
++	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++	q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
++	q->drv_priv = unicam;
++	q->ops = &unicam_video_qops;
++	q->mem_ops = &vb2_dma_contig_memops;
++	q->buf_struct_size = sizeof(struct unicam_buffer);
++	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
++	q->lock = &unicam->lock;
++	q->min_buffers_needed = 2;
++	q->dev = &unicam->pdev->dev;
++
++	ret = vb2_queue_init(q);
++	if (ret) {
++		unicam_err(unicam, "vb2_queue_init() failed\n");
++		return ret;
++	}
++
++	INIT_LIST_HEAD(&unicam->dma_queue.active);
++
++	vdev = &unicam->video_dev;
++	strlcpy(vdev->name, UNICAM_MODULE_NAME, sizeof(vdev->name));
++	vdev->release = video_device_release_empty;
++	vdev->fops = &unicam_fops;
++	vdev->ioctl_ops = &unicam_ioctl_ops;
++	vdev->v4l2_dev = &unicam->v4l2_dev;
++	vdev->vfl_dir = VFL_DIR_RX;
++	vdev->queue = q;
++	vdev->lock = &unicam->lock;
++	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
++			    V4L2_CAP_READWRITE;
++
++	/* If the source has no controls then remove our ctrl handler. */
++	if (list_empty(&unicam->ctrl_handler.ctrls))
++		unicam->v4l2_dev.ctrl_handler = NULL;
++
++	video_set_drvdata(vdev, unicam);
++	vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
++
++	if (!v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_STD);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_STD);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUMSTD);
++	}
++	if (!v4l2_subdev_has_op(unicam->sensor, video, querystd))
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERYSTD);
++	if (!v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_EDID);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_EDID);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_DV_TIMINGS_CAP);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_DV_TIMINGS);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_DV_TIMINGS);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUM_DV_TIMINGS);
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERY_DV_TIMINGS);
++	}
++	if (!v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
++		v4l2_disable_ioctl(&unicam->video_dev,
++				   VIDIOC_ENUM_FRAMEINTERVALS);
++	if (!v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_PARM);
++	if (!v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_PARM);
++
++	if (!v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
++		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUM_FRAMESIZES);
++
++	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
++	if (ret) {
++		unicam_err(unicam, "Unable to register video device.\n");
++		return ret;
++	}
++
++	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
++	if (ret) {
++		unicam_err(unicam,
++			   "Unable to register subdev nodes.\n");
++		video_unregister_device(&unicam->video_dev);
++		return ret;
++	}
++
++	ret = media_create_pad_link(&unicam->sensor->entity, 0,
++				    &unicam->video_dev.entity, 0,
++				    MEDIA_LNK_FL_ENABLED |
++				    MEDIA_LNK_FL_IMMUTABLE);
++	if (ret) {
++		unicam_err(unicam, "Unable to create pad links.\n");
++		video_unregister_device(&unicam->video_dev);
++		return ret;
++	}
++
++	return 0;
++}
++
++static int unicam_async_complete(struct v4l2_async_notifier *notifier)
++{
++	struct unicam_device *unicam = container_of(notifier->v4l2_dev,
++					struct unicam_device, v4l2_dev);
++
++	return unicam_probe_complete(unicam);
++}
++
++static const struct v4l2_async_notifier_operations unicam_async_ops = {
++	.bound = unicam_async_bound,
++	.complete = unicam_async_complete,
++};
++
++static int of_unicam_connect_subdevs(struct unicam_device *dev)
++{
++	struct platform_device *pdev = dev->pdev;
++	struct device_node *parent, *ep_node = NULL, *remote_ep = NULL,
++			*sensor_node = NULL;
++	struct v4l2_fwnode_endpoint *ep;
++	struct v4l2_async_subdev *asd;
++	unsigned int peripheral_data_lanes;
++	int ret = -EINVAL;
++	unsigned int lane;
++
++	parent = pdev->dev.of_node;
++
++	asd = &dev->asd;
++	ep = &dev->endpoint;
++
++	ep_node = of_graph_get_next_endpoint(parent, NULL);
++	if (!ep_node) {
++		unicam_dbg(3, dev, "can't get next endpoint\n");
++		goto cleanup_exit;
++	}
++
++	unicam_dbg(3, dev, "ep_node is %s\n", ep_node->name);
++
++	v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_node), ep);
++
++	for (lane = 0; lane < ep->bus.mipi_csi2.num_data_lanes; lane++) {
++		if (ep->bus.mipi_csi2.data_lanes[lane] != lane + 1) {
++			unicam_err(dev, "Local endpoint - data lane reordering not supported\n");
++			goto cleanup_exit;
++		}
++	}
++
++	peripheral_data_lanes = ep->bus.mipi_csi2.num_data_lanes;
++
++	sensor_node = of_graph_get_remote_port_parent(ep_node);
++	if (!sensor_node) {
++		unicam_dbg(3, dev, "can't get remote parent\n");
++		goto cleanup_exit;
++	}
++	unicam_dbg(3, dev, "sensor_node is %s\n", sensor_node->name);
++	asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
++	asd->match.fwnode = of_fwnode_handle(sensor_node);
++
++	remote_ep = of_graph_get_remote_endpoint(ep_node);
++	if (!remote_ep) {
++		unicam_dbg(3, dev, "can't get remote-endpoint\n");
++		goto cleanup_exit;
++	}
++	unicam_dbg(3, dev, "remote_ep is %s\n", remote_ep->name);
++	v4l2_fwnode_endpoint_parse(of_fwnode_handle(remote_ep), ep);
++	unicam_dbg(3, dev, "parsed remote_ep to endpoint. nr_of_link_frequencies %u, bus_type %u\n",
++		   ep->nr_of_link_frequencies, ep->bus_type);
++
++	switch (ep->bus_type) {
++	case V4L2_MBUS_CSI2_DPHY:
++		if (ep->bus.mipi_csi2.num_data_lanes >
++				peripheral_data_lanes) {
++			unicam_err(dev, "Subdevice %s wants too many data lanes (%u > %u)\n",
++				   sensor_node->name,
++				   ep->bus.mipi_csi2.num_data_lanes,
++				   peripheral_data_lanes);
++			goto cleanup_exit;
++		}
++		for (lane = 0;
++		     lane < ep->bus.mipi_csi2.num_data_lanes;
++		     lane++) {
++			if (ep->bus.mipi_csi2.data_lanes[lane] != lane + 1) {
++				unicam_err(dev, "Subdevice %s - incompatible data lane config\n",
++					   sensor_node->name);
++				goto cleanup_exit;
++			}
++		}
++		dev->max_data_lanes = ep->bus.mipi_csi2.num_data_lanes;
++		dev->bus_flags = ep->bus.mipi_csi2.flags;
++		break;
++	case V4L2_MBUS_CCP2:
++		if (ep->bus.mipi_csi1.clock_lane != 0 ||
++		    ep->bus.mipi_csi1.data_lane != 1) {
++			unicam_err(dev, "Subdevice %s incompatible lane config\n",
++				   sensor_node->name);
++			goto cleanup_exit;
++		}
++		dev->max_data_lanes = 1;
++		dev->bus_flags = ep->bus.mipi_csi1.strobe;
++		break;
++	default:
++		/* Unsupported bus type */
++		unicam_err(dev, "sub-device %s is not a CSI2 or CCP2 device %d\n",
++			   sensor_node->name, ep->bus_type);
++		goto cleanup_exit;
++	}
++
++	/* Store bus type - CSI2 or CCP2 */
++	dev->bus_type = ep->bus_type;
++	unicam_dbg(3, dev, "bus_type is %d\n", dev->bus_type);
++
++	/* Store Virtual Channel number */
++	dev->virtual_channel = ep->base.id;
++
++	unicam_dbg(3, dev, "v4l2-endpoint: %s\n",
++		   dev->bus_type == V4L2_MBUS_CSI2_DPHY ? "CSI2" : "CCP2");
++	unicam_dbg(3, dev, "Virtual Channel=%d\n", dev->virtual_channel);
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY)
++		unicam_dbg(3, dev, "flags=0x%08x\n", ep->bus.mipi_csi2.flags);
++	unicam_dbg(3, dev, "num_data_lanes=%d\n", dev->max_data_lanes);
++
++	unicam_dbg(1, dev, "found sub-device %s\n", sensor_node->name);
++
++	v4l2_async_notifier_init(&dev->notifier);
++
++	ret = v4l2_async_notifier_add_subdev(&dev->notifier, asd);
++	if (ret) {
++		unicam_err(dev, "Error adding subdevice - ret %d\n", ret);
++		goto cleanup_exit;
++	}
++
++	dev->notifier.ops = &unicam_async_ops;
++	ret = v4l2_async_notifier_register(&dev->v4l2_dev,
++					   &dev->notifier);
++	if (ret) {
++		unicam_err(dev, "Error registering async notifier - ret %d\n",
++			   ret);
++		ret = -EINVAL;
++	}
++
++cleanup_exit:
++	if (remote_ep)
++		of_node_put(remote_ep);
++	if (sensor_node)
++		of_node_put(sensor_node);
++	if (ep_node)
++		of_node_put(ep_node);
++
++	return ret;
++}
++
++static int unicam_probe(struct platform_device *pdev)
++{
++	struct unicam_cfg *unicam_cfg;
++	struct unicam_device *unicam;
++	struct v4l2_ctrl_handler *hdl;
++	struct resource	*res;
++	int ret;
++
++	unicam = devm_kzalloc(&pdev->dev, sizeof(*unicam), GFP_KERNEL);
++	if (!unicam)
++		return -ENOMEM;
++
++	unicam->pdev = pdev;
++	unicam_cfg = &unicam->cfg;
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	unicam_cfg->base = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(unicam_cfg->base)) {
++		unicam_err(unicam, "Failed to get main io block\n");
++		return PTR_ERR(unicam_cfg->base);
++	}
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++	unicam_cfg->clk_gate_base = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(unicam_cfg->clk_gate_base)) {
++		unicam_err(unicam, "Failed to get 2nd io block\n");
++		return PTR_ERR(unicam_cfg->clk_gate_base);
++	}
++
++	unicam->clock = devm_clk_get(&pdev->dev, "lp");
++	if (IS_ERR(unicam->clock)) {
++		unicam_err(unicam, "Failed to get clock\n");
++		return PTR_ERR(unicam->clock);
++	}
++
++	ret = platform_get_irq(pdev, 0);
++	if (ret <= 0) {
++		dev_err(&pdev->dev, "No IRQ resource\n");
++		return -ENODEV;
++	}
++
++	ret = devm_request_irq(&pdev->dev, ret, unicam_isr, 0,
++			       "unicam_capture0", unicam);
++	if (ret) {
++		dev_err(&pdev->dev, "Unable to request interrupt\n");
++		return -EINVAL;
++	}
++
++	unicam->mdev.dev = &pdev->dev;
++	strscpy(unicam->mdev.model, UNICAM_MODULE_NAME,
++		sizeof(unicam->mdev.model));
++	strscpy(unicam->mdev.serial, "", sizeof(unicam->mdev.serial));
++	snprintf(unicam->mdev.bus_info, sizeof(unicam->mdev.bus_info),
++		 "platform:%s %s",
++		 pdev->dev.driver->name, dev_name(&pdev->dev));
++	unicam->mdev.hw_revision = 1;
++
++	media_entity_pads_init(&unicam->video_dev.entity, 1, &unicam->pad);
++	media_device_init(&unicam->mdev);
++
++	unicam->v4l2_dev.mdev = &unicam->mdev;
++
++	ret = v4l2_device_register(&pdev->dev, &unicam->v4l2_dev);
++	if (ret) {
++		unicam_err(unicam,
++			   "Unable to register v4l2 device.\n");
++		goto media_cleanup;
++	}
++
++	ret = media_device_register(&unicam->mdev);
++	if (ret < 0) {
++		unicam_err(unicam,
++			   "Unable to register media-controller device.\n");
++		goto probe_out_v4l2_unregister;
++	}
++
++	/* Reserve space for the controls */
++	hdl = &unicam->ctrl_handler;
++	ret = v4l2_ctrl_handler_init(hdl, 16);
++	if (ret < 0)
++		goto media_unregister;
++	unicam->v4l2_dev.ctrl_handler = hdl;
++
++	/* set the driver data in platform device */
++	platform_set_drvdata(pdev, unicam);
++
++	ret = of_unicam_connect_subdevs(unicam);
++	if (ret) {
++		dev_err(&pdev->dev, "Failed to connect subdevs\n");
++		goto free_hdl;
++	}
++
++	/* Enable the block power domain */
++	pm_runtime_enable(&pdev->dev);
++
++	return 0;
++
++free_hdl:
++	v4l2_ctrl_handler_free(hdl);
++media_unregister:
++	media_device_unregister(&unicam->mdev);
++probe_out_v4l2_unregister:
++	v4l2_device_unregister(&unicam->v4l2_dev);
++media_cleanup:
++	media_device_cleanup(&unicam->mdev);
++
++	return ret;
++}
++
++static int unicam_remove(struct platform_device *pdev)
++{
++	struct unicam_device *unicam = platform_get_drvdata(pdev);
++
++	unicam_dbg(2, unicam, "%s\n", __func__);
++
++	pm_runtime_disable(&pdev->dev);
++
++	v4l2_async_notifier_unregister(&unicam->notifier);
++	v4l2_ctrl_handler_free(&unicam->ctrl_handler);
++	v4l2_device_unregister(&unicam->v4l2_dev);
++	video_unregister_device(&unicam->video_dev);
++	if (unicam->sensor_config)
++		v4l2_subdev_free_pad_config(unicam->sensor_config);
++	media_device_unregister(&unicam->mdev);
++	media_device_cleanup(&unicam->mdev);
++
++	return 0;
++}
++
++static const struct of_device_id unicam_of_match[] = {
++	{ .compatible = "brcm,bcm2835-unicam", },
++	{ /* sentinel */ },
++};
++MODULE_DEVICE_TABLE(of, unicam_of_match);
++
++static struct platform_driver unicam_driver = {
++	.probe		= unicam_probe,
++	.remove		= unicam_remove,
++	.driver = {
++		.name	= UNICAM_MODULE_NAME,
++		.of_match_table = of_match_ptr(unicam_of_match),
++	},
++};
++
++module_platform_driver(unicam_driver);
++
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
++MODULE_DESCRIPTION("BCM2835 Unicam driver");
++MODULE_LICENSE("GPL");
++MODULE_VERSION(UNICAM_VERSION);
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/vc4-regs-unicam.h
+@@ -0,0 +1,253 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++/*
++ * Copyright (C) 2017-2020 Raspberry Pi Trading.
++ * Dave Stevenson <dave.stevenson@raspberrypi.com>
++ */
++
++#ifndef VC4_REGS_UNICAM_H
++#define VC4_REGS_UNICAM_H
++
++/*
++ * The following values are taken from files found within the code drop
++ * made by Broadcom for the BCM21553 Graphics Driver, predominantly in
++ * brcm_usrlib/dag/vmcsx/vcinclude/hardware_vc4.h.
++ * They have been modified to be only the register offset.
++ */
++#define UNICAM_CTRL	0x000
++#define UNICAM_STA	0x004
++#define UNICAM_ANA	0x008
++#define UNICAM_PRI	0x00c
++#define UNICAM_CLK	0x010
++#define UNICAM_CLT	0x014
++#define UNICAM_DAT0	0x018
++#define UNICAM_DAT1	0x01c
++#define UNICAM_DAT2	0x020
++#define UNICAM_DAT3	0x024
++#define UNICAM_DLT	0x028
++#define UNICAM_CMP0	0x02c
++#define UNICAM_CMP1	0x030
++#define UNICAM_CAP0	0x034
++#define UNICAM_CAP1	0x038
++#define UNICAM_ICTL	0x100
++#define UNICAM_ISTA	0x104
++#define UNICAM_IDI0	0x108
++#define UNICAM_IPIPE	0x10c
++#define UNICAM_IBSA0	0x110
++#define UNICAM_IBEA0	0x114
++#define UNICAM_IBLS	0x118
++#define UNICAM_IBWP	0x11c
++#define UNICAM_IHWIN	0x120
++#define UNICAM_IHSTA	0x124
++#define UNICAM_IVWIN	0x128
++#define UNICAM_IVSTA	0x12c
++#define UNICAM_ICC	0x130
++#define UNICAM_ICS	0x134
++#define UNICAM_IDC	0x138
++#define UNICAM_IDPO	0x13c
++#define UNICAM_IDCA	0x140
++#define UNICAM_IDCD	0x144
++#define UNICAM_IDS	0x148
++#define UNICAM_DCS	0x200
++#define UNICAM_DBSA0	0x204
++#define UNICAM_DBEA0	0x208
++#define UNICAM_DBWP	0x20c
++#define UNICAM_DBCTL	0x300
++#define UNICAM_IBSA1	0x304
++#define UNICAM_IBEA1	0x308
++#define UNICAM_IDI1	0x30c
++#define UNICAM_DBSA1	0x310
++#define UNICAM_DBEA1	0x314
++#define UNICAM_MISC	0x400
++
++/*
++ * The following bitmasks are from the kernel released by Broadcom
++ * for Android - https://android.googlesource.com/kernel/bcm/
++ * The Rhea, Hawaii, and Java chips all contain the same VideoCore4
++ * Unicam block as BCM2835, as defined in eg
++ * arch/arm/mach-rhea/include/mach/rdb_A0/brcm_rdb_cam.h and similar.
++ * Values reworked to use the kernel BIT and GENMASK macros.
++ *
++ * Some of the bit mnenomics have been amended to match the datasheet.
++ */
++/* UNICAM_CTRL Register */
++#define UNICAM_CPE		BIT(0)
++#define UNICAM_MEM		BIT(1)
++#define UNICAM_CPR		BIT(2)
++#define UNICAM_CPM_MASK		GENMASK(3, 3)
++#define UNICAM_CPM_CSI2		0
++#define UNICAM_CPM_CCP2		1
++#define UNICAM_SOE		BIT(4)
++#define UNICAM_DCM_MASK		GENMASK(5, 5)
++#define UNICAM_DCM_STROBE	0
++#define UNICAM_DCM_DATA		1
++#define UNICAM_SLS		BIT(6)
++#define UNICAM_PFT_MASK		GENMASK(11, 8)
++#define UNICAM_OET_MASK		GENMASK(20, 12)
++
++/* UNICAM_STA Register */
++#define UNICAM_SYN		BIT(0)
++#define UNICAM_CS		BIT(1)
++#define UNICAM_SBE		BIT(2)
++#define UNICAM_PBE		BIT(3)
++#define UNICAM_HOE		BIT(4)
++#define UNICAM_PLE		BIT(5)
++#define UNICAM_SSC		BIT(6)
++#define UNICAM_CRCE		BIT(7)
++#define UNICAM_OES		BIT(8)
++#define UNICAM_IFO		BIT(9)
++#define UNICAM_OFO		BIT(10)
++#define UNICAM_BFO		BIT(11)
++#define UNICAM_DL		BIT(12)
++#define UNICAM_PS		BIT(13)
++#define UNICAM_IS		BIT(14)
++#define UNICAM_PI0		BIT(15)
++#define UNICAM_PI1		BIT(16)
++#define UNICAM_FSI_S		BIT(17)
++#define UNICAM_FEI_S		BIT(18)
++#define UNICAM_LCI_S		BIT(19)
++#define UNICAM_BUF0_RDY		BIT(20)
++#define UNICAM_BUF0_NO		BIT(21)
++#define UNICAM_BUF1_RDY		BIT(22)
++#define UNICAM_BUF1_NO		BIT(23)
++#define UNICAM_DI		BIT(24)
++
++#define UNICAM_STA_MASK_ALL \
++		(UNICAM_DL + \
++		UNICAM_SBE + \
++		UNICAM_PBE + \
++		UNICAM_HOE + \
++		UNICAM_PLE + \
++		UNICAM_SSC + \
++		UNICAM_CRCE + \
++		UNICAM_IFO + \
++		UNICAM_OFO + \
++		UNICAM_PS + \
++		UNICAM_PI0 + \
++		UNICAM_PI1)
++
++/* UNICAM_ANA Register */
++#define UNICAM_APD		BIT(0)
++#define UNICAM_BPD		BIT(1)
++#define UNICAM_AR		BIT(2)
++#define UNICAM_DDL		BIT(3)
++#define UNICAM_CTATADJ_MASK	GENMASK(7, 4)
++#define UNICAM_PTATADJ_MASK	GENMASK(11, 8)
++
++/* UNICAM_PRI Register */
++#define UNICAM_PE		BIT(0)
++#define UNICAM_PT_MASK		GENMASK(2, 1)
++#define UNICAM_NP_MASK		GENMASK(7, 4)
++#define UNICAM_PP_MASK		GENMASK(11, 8)
++#define UNICAM_BS_MASK		GENMASK(15, 12)
++#define UNICAM_BL_MASK		GENMASK(17, 16)
++
++/* UNICAM_CLK Register */
++#define UNICAM_CLE		BIT(0)
++#define UNICAM_CLPD		BIT(1)
++#define UNICAM_CLLPE		BIT(2)
++#define UNICAM_CLHSE		BIT(3)
++#define UNICAM_CLTRE		BIT(4)
++#define UNICAM_CLAC_MASK	GENMASK(8, 5)
++#define UNICAM_CLSTE		BIT(29)
++
++/* UNICAM_CLT Register */
++#define UNICAM_CLT1_MASK	GENMASK(7, 0)
++#define UNICAM_CLT2_MASK	GENMASK(15, 8)
++
++/* UNICAM_DATn Registers */
++#define UNICAM_DLE		BIT(0)
++#define UNICAM_DLPD		BIT(1)
++#define UNICAM_DLLPE		BIT(2)
++#define UNICAM_DLHSE		BIT(3)
++#define UNICAM_DLTRE		BIT(4)
++#define UNICAM_DLSM		BIT(5)
++#define UNICAM_DLFO		BIT(28)
++#define UNICAM_DLSTE		BIT(29)
++
++#define UNICAM_DAT_MASK_ALL (UNICAM_DLSTE + UNICAM_DLFO)
++
++/* UNICAM_DLT Register */
++#define UNICAM_DLT1_MASK	GENMASK(7, 0)
++#define UNICAM_DLT2_MASK	GENMASK(15, 8)
++#define UNICAM_DLT3_MASK	GENMASK(23, 16)
++
++/* UNICAM_ICTL Register */
++#define UNICAM_FSIE		BIT(0)
++#define UNICAM_FEIE		BIT(1)
++#define UNICAM_IBOB		BIT(2)
++#define UNICAM_FCM		BIT(3)
++#define UNICAM_TFC		BIT(4)
++#define UNICAM_LIP_MASK		GENMASK(6, 5)
++#define UNICAM_LCIE_MASK	GENMASK(28, 16)
++
++/* UNICAM_IDI0/1 Register */
++#define UNICAM_ID0_MASK		GENMASK(7, 0)
++#define UNICAM_ID1_MASK		GENMASK(15, 8)
++#define UNICAM_ID2_MASK		GENMASK(23, 16)
++#define UNICAM_ID3_MASK		GENMASK(31, 24)
++
++/* UNICAM_ISTA Register */
++#define UNICAM_FSI		BIT(0)
++#define UNICAM_FEI		BIT(1)
++#define UNICAM_LCI		BIT(2)
++
++#define UNICAM_ISTA_MASK_ALL (UNICAM_FSI + UNICAM_FEI + UNICAM_LCI)
++
++/* UNICAM_IPIPE Register */
++#define UNICAM_PUM_MASK		GENMASK(2, 0)
++		/* Unpacking modes */
++		#define UNICAM_PUM_NONE		0
++		#define UNICAM_PUM_UNPACK6	1
++		#define UNICAM_PUM_UNPACK7	2
++		#define UNICAM_PUM_UNPACK8	3
++		#define UNICAM_PUM_UNPACK10	4
++		#define UNICAM_PUM_UNPACK12	5
++		#define UNICAM_PUM_UNPACK14	6
++		#define UNICAM_PUM_UNPACK16	7
++#define UNICAM_DDM_MASK		GENMASK(6, 3)
++#define UNICAM_PPM_MASK		GENMASK(9, 7)
++		/* Packing modes */
++		#define UNICAM_PPM_NONE		0
++		#define UNICAM_PPM_PACK8	1
++		#define UNICAM_PPM_PACK10	2
++		#define UNICAM_PPM_PACK12	3
++		#define UNICAM_PPM_PACK14	4
++		#define UNICAM_PPM_PACK16	5
++#define UNICAM_DEM_MASK		GENMASK(11, 10)
++#define UNICAM_DEBL_MASK	GENMASK(14, 12)
++#define UNICAM_ICM_MASK		GENMASK(16, 15)
++#define UNICAM_IDM_MASK		GENMASK(17, 17)
++
++/* UNICAM_ICC Register */
++#define UNICAM_ICFL_MASK	GENMASK(4, 0)
++#define UNICAM_ICFH_MASK	GENMASK(9, 5)
++#define UNICAM_ICST_MASK	GENMASK(12, 10)
++#define UNICAM_ICLT_MASK	GENMASK(15, 13)
++#define UNICAM_ICLL_MASK	GENMASK(31, 16)
++
++/* UNICAM_DCS Register */
++#define UNICAM_DIE		BIT(0)
++#define UNICAM_DIM		BIT(1)
++#define UNICAM_DBOB		BIT(3)
++#define UNICAM_FDE		BIT(4)
++#define UNICAM_LDP		BIT(5)
++#define UNICAM_EDL_MASK		GENMASK(15, 8)
++
++/* UNICAM_DBCTL Register */
++#define UNICAM_DBEN		BIT(0)
++#define UNICAM_BUF0_IE		BIT(1)
++#define UNICAM_BUF1_IE		BIT(2)
++
++/* UNICAM_CMP[0,1] register */
++#define UNICAM_PCE		BIT(31)
++#define UNICAM_GI		BIT(9)
++#define UNICAM_CPH		BIT(8)
++#define UNICAM_PCVC_MASK	GENMASK(7, 6)
++#define UNICAM_PCDT_MASK	GENMASK(5, 0)
++
++/* UNICAM_MISC register */
++#define UNICAM_FL0		BIT(6)
++#define UNICAM_FL1		BIT(9)
++
++#endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0211-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch b/target/linux/bcm27xx/patches-5.15/950-0211-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch
new file mode 100644
index 0000000000..e48514cd9c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0211-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch
@@ -0,0 +1,85 @@
+From 78628ad9be150b3b5ddf530eb1bc1e2d1dd8cfb4 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 1 Apr 2020 08:46:29 +0100
+Subject: [PATCH] media: uapi: v4l2-core: Add sensor ancillary data
+ V4L2 foucc type.
+
+Add V4L2_META_FMT_SENSOR_DATA format 4CC.
+
+This new format will be used by the BCM2835 Unicam device to return
+out camera sensor embedded data.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../userspace-api/media/v4l/meta-formats.rst  |  1 +
+ .../media/v4l/pixfmt-meta-sensor-data.rst     | 32 +++++++++++++++++++
+ drivers/media/v4l2-core/v4l2-ioctl.c          |  1 +
+ include/uapi/linux/videodev2.h                |  1 +
+ 4 files changed, 35 insertions(+)
+ create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-sensor-data.rst
+
+--- a/Documentation/userspace-api/media/v4l/meta-formats.rst
++++ b/Documentation/userspace-api/media/v4l/meta-formats.rst
+@@ -15,6 +15,7 @@ These formats are used for the :ref:`met
+     pixfmt-meta-d4xx
+     pixfmt-meta-intel-ipu3
+     pixfmt-meta-rkisp1
++    pixfmt-meta-sensor-data
+     pixfmt-meta-uvc
+     pixfmt-meta-vsp1-hgo
+     pixfmt-meta-vsp1-hgt
+--- /dev/null
++++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-sensor-data.rst
+@@ -0,0 +1,32 @@
++.. Permission is granted to copy, distribute and/or modify this
++.. document under the terms of the GNU Free Documentation License,
++.. Version 1.1 or any later version published by the Free Software
++.. Foundation, with no Invariant Sections, no Front-Cover Texts
++.. and no Back-Cover Texts. A copy of the license is included at
++.. Documentation/media/uapi/fdl-appendix.rst.
++..
++.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
++
++.. _v4l2-meta-fmt-sensor-data:
++
++***********************************
++V4L2_META_FMT_SENSOR_DATA  ('SENS')
++***********************************
++
++Sensor Ancillary Metadata
++
++Description
++===========
++
++This format describes ancillary data generated by a camera sensor and
++transmitted over a stream on the camera bus. Sensor vendors generally have their
++own custom format for this ancillary data. Some vendors follow a generic
++CSI-2/SMIA embedded data format as described in the `CSI-2 specification.
++<https://mipi.org/specifications/csi-2>`_
++
++The size of the embedded buffer is defined as a single line with a pixel width
++width specified in bytes. This is obtained by a call to the
++:c:type:`VIDIOC_SUBDEV_G_FMT` ioctl on the sensor subdevice where the ``pad``
++field in :c:type:`v4l2_subdev_format` is set to 1.  Note that this size is fixed
++and cannot be modified with a call to :c:type:`VIDIOC_SUBDEV_S_FMT`.
++
+--- a/drivers/media/v4l2-core/v4l2-ioctl.c
++++ b/drivers/media/v4l2-core/v4l2-ioctl.c
+@@ -1389,6 +1389,7 @@ static void v4l_fill_fmtdesc(struct v4l2
+ 	case V4L2_META_FMT_VIVID:       descr = "Vivid Metadata"; break;
+ 	case V4L2_META_FMT_RK_ISP1_PARAMS:	descr = "Rockchip ISP1 3A Parameters"; break;
+ 	case V4L2_META_FMT_RK_ISP1_STAT_3A:	descr = "Rockchip ISP1 3A Statistics"; break;
++	case V4L2_META_FMT_SENSOR_DATA:	descr = "Sensor Ancillary Metadata"; break;
+ 
+ 	default:
+ 		/* Compressed formats */
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -775,6 +775,7 @@ struct v4l2_pix_format {
+ #define V4L2_META_FMT_UVC         v4l2_fourcc('U', 'V', 'C', 'H') /* UVC Payload Header metadata */
+ #define V4L2_META_FMT_D4XX        v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */
+ #define V4L2_META_FMT_VIVID	  v4l2_fourcc('V', 'I', 'V', 'D') /* Vivid Metadata */
++#define V4L2_META_FMT_SENSOR_DATA v4l2_fourcc('S', 'E', 'N', 'S') /* Sensor Ancillary metadata */
+ 
+ /* Vendor specific - used for RK_ISP1 camera sub-system */
+ #define V4L2_META_FMT_RK_ISP1_PARAMS	v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 3A Parameters */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0212-media-uapi-Add-MEDIA_BUS_FMT_SENSOR_DATA-media-bus-f.patch b/target/linux/bcm27xx/patches-5.15/950-0212-media-uapi-Add-MEDIA_BUS_FMT_SENSOR_DATA-media-bus-f.patch
new file mode 100644
index 0000000000..7ac19baea3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0212-media-uapi-Add-MEDIA_BUS_FMT_SENSOR_DATA-media-bus-f.patch
@@ -0,0 +1,63 @@
+From 6d55965f71e9f12cd19682bed6449e6d8f7be3f9 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 21 Jan 2020 14:06:47 +0000
+Subject: [PATCH] media: uapi: Add MEDIA_BUS_FMT_SENSOR_DATA media bus
+ format
+
+This patch adds MEDIA_BUS_FMT_SENSOR_DATA used by the bcm2835-unicam
+driver to support CSI-2 embedded data streams from camera sensors.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/v4l/subdev-formats.rst              | 32 +++++++++++++++++++
+ include/uapi/linux/media-bus-format.h         |  3 ++
+ 2 files changed, 35 insertions(+)
+
+--- a/Documentation/userspace-api/media/v4l/subdev-formats.rst
++++ b/Documentation/userspace-api/media/v4l/subdev-formats.rst
+@@ -7930,3 +7930,35 @@ The following table lists the existing m
+ 	both sides of the link and the bus format is a fixed
+ 	metadata format that is not configurable from userspace.
+ 	Width and height will be set to 0 for this format.
++
++
++.. _v4l2-mbus-sensor-data:
++
++Sensor Ancillary Metadata Formats
++^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
++
++This section lists ancillary data generated by a camera sensor and
++transmitted over a stream on the camera bus.
++
++The following table lists the existing sensor ancillary metadata formats:
++
++
++.. _v4l2-mbus-pixelcode-sensor-metadata:
++
++.. tabularcolumns:: |p{8.0cm}|p{1.4cm}|p{7.7cm}|
++
++.. flat-table:: Sensor ancillary metadata formats
++    :header-rows:  1
++    :stub-columns: 0
++
++    * - Identifier
++      - Code
++      - Comments
++    * .. _MEDIA_BUS_FMT_SENSOR_DATA:
++
++      - MEDIA_BUS_FMT_SENSOR_DATA
++      - 0x7001
++      - Sensor vendor specific ancillary metadata. Some vendors follow a generic
++        CSI-2/SMIA embedded data format as described in the `CSI-2 specification.
++	<https://mipi.org/specifications/csi-2>`_
++
+--- a/include/uapi/linux/media-bus-format.h
++++ b/include/uapi/linux/media-bus-format.h
+@@ -165,4 +165,7 @@
+  */
+ #define MEDIA_BUS_FMT_METADATA_FIXED		0x7001
+ 
++/* Sensor ancillary metadata formats - next is 0x7002 */
++#define MEDIA_BUS_FMT_SENSOR_DATA		0x7002
++
+ #endif /* __LINUX_MEDIA_BUS_FORMAT_H */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0213-media-bcm2835-unicam-Add-support-for-mulitple-device.patch b/target/linux/bcm27xx/patches-5.15/950-0213-media-bcm2835-unicam-Add-support-for-mulitple-device.patch
new file mode 100644
index 0000000000..cac6779a57
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0213-media-bcm2835-unicam-Add-support-for-mulitple-device.patch
@@ -0,0 +1,1084 @@
+From f69e7d7aaaea4c6531b357ac2a1a522b400c7cd0 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 7 Apr 2020 10:42:14 +0100
+Subject: [PATCH] media: bcm2835-unicam: Add support for mulitple
+ device nodes.
+
+Move device node specific state out of the device state structure and
+into a new node structure.  This separation will be needed for future
+changes where we will add an embedded data node to the driver to work
+alongside the existing image data node.
+
+Currently only use a single image node, so this commit does not add
+any functional changes.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 484 ++++++++++--------
+ 1 file changed, 283 insertions(+), 201 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -109,7 +109,8 @@ MODULE_PARM_DESC(debug, "Debug level 0-3
+ /* Define a nominal minimum image size */
+ #define MIN_WIDTH	16
+ #define MIN_HEIGHT	16
+-
++/* Maximum number of simulataneous streams Uncaim can handle. */
++#define MAX_NODES	2
+ /*
+  * struct unicam_fmt - Unicam media bus format information
+  * @pixelformat: V4L2 pixel format FCC identifier. 0 if n/a.
+@@ -346,11 +347,37 @@ struct unicam_cfg {
+ 
+ #define MAX_POSSIBLE_PIX_FMTS (ARRAY_SIZE(formats))
+ 
+-struct unicam_device {
+-	/* V4l2 specific parameters */
++struct unicam_node {
++	bool registered;
++	unsigned int pad_id;
++	/* Pointer pointing to current v4l2_buffer */
++	struct unicam_buffer *cur_frm;
++	/* Pointer pointing to next v4l2_buffer */
++	struct unicam_buffer *next_frm;
++	/* video capture */
++	const struct unicam_fmt *fmt;
++	/* Used to store current pixel format */
++	struct v4l2_format v_fmt;
++	/* Used to store current mbus frame format */
++	struct v4l2_mbus_framefmt m_fmt;
++	/* Buffer queue used in video-buf */
++	struct vb2_queue buffer_queue;
++	/* Queue of filled frames */
++	struct unicam_dmaqueue dma_queue;
++	/* IRQ lock for DMA queue */
++	spinlock_t dma_queue_lock;
++	/* lock used to access this structure */
++	struct mutex lock;
+ 	/* Identifies video device for this channel */
+ 	struct video_device video_dev;
++	/* Pointer to the parent handle */
++	struct unicam_device *dev;
++	struct media_pad pad;
+ 	struct v4l2_ctrl_handler ctrl_handler;
++};
++
++struct unicam_device {
++	/* V4l2 specific parameters */
+ 
+ 	struct v4l2_fwnode_endpoint endpoint;
+ 
+@@ -363,7 +390,6 @@ struct unicam_device {
+ 	/* V4l2 device */
+ 	struct v4l2_device v4l2_dev;
+ 	struct media_device mdev;
+-	struct media_pad pad;
+ 
+ 	/* parent device */
+ 	struct platform_device *pdev;
+@@ -378,18 +404,6 @@ struct unicam_device {
+ 	/* current input at the sub device */
+ 	int current_input;
+ 
+-	/* Pointer pointing to current v4l2_buffer */
+-	struct unicam_buffer *cur_frm;
+-	/* Pointer pointing to next v4l2_buffer */
+-	struct unicam_buffer *next_frm;
+-
+-	/* video capture */
+-	const struct unicam_fmt	*fmt;
+-	/* Used to store current pixel format */
+-	struct v4l2_format v_fmt;
+-	/* Used to store current mbus frame format */
+-	struct v4l2_mbus_framefmt m_fmt;
+-
+ 	unsigned int virtual_channel;
+ 	enum v4l2_mbus_type bus_type;
+ 	/*
+@@ -401,20 +415,10 @@ struct unicam_device {
+ 	unsigned int active_data_lanes;
+ 
+ 	struct v4l2_rect crop;
+-
+-	/* Currently selected input on subdev */
+-	int input;
+-
+-	/* Buffer queue used in video-buf */
+-	struct vb2_queue buffer_queue;
+-	/* Queue of filled frames */
+-	struct unicam_dmaqueue dma_queue;
+-	/* IRQ lock for DMA queue */
+-	spinlock_t dma_queue_lock;
+-	/* lock used to access this structure */
+-	struct mutex lock;
+ 	/* Flag to denote that we are processing buffers */
+ 	int streaming;
++
++	struct unicam_node node[MAX_NODES];
+ };
+ 
+ /* Hardware access */
+@@ -526,10 +530,11 @@ static inline unsigned int bytes_per_lin
+ }
+ 
+ static int __subdev_get_format(struct unicam_device *dev,
+-			       struct v4l2_mbus_framefmt *fmt)
++			       struct v4l2_mbus_framefmt *fmt, int pad_id)
+ {
+ 	struct v4l2_subdev_format sd_fmt = {
+ 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.pad = pad_id
+ 	};
+ 	int ret;
+ 
+@@ -598,29 +603,30 @@ static int unicam_calc_format_size_bpl(s
+ 	return 0;
+ }
+ 
+-static int unicam_reset_format(struct unicam_device *dev)
++static int unicam_reset_format(struct unicam_node *node)
+ {
++	struct unicam_device *dev = node->dev;
+ 	struct v4l2_mbus_framefmt mbus_fmt;
+ 	int ret;
+ 
+-	ret = __subdev_get_format(dev, &mbus_fmt);
++	ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
+ 	if (ret) {
+ 		unicam_err(dev, "Failed to get_format - ret %d\n", ret);
+ 		return ret;
+ 	}
+ 
+-	if (mbus_fmt.code != dev->fmt->code) {
++	if (mbus_fmt.code != dev->node[0].fmt->code) {
+ 		unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
+-			   dev->fmt->code, mbus_fmt.code);
++			   dev->node[0].fmt->code, mbus_fmt.code);
+ 		return ret;
+ 	}
+ 
+-	v4l2_fill_pix_format(&dev->v_fmt.fmt.pix, &mbus_fmt);
+-	dev->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++	v4l2_fill_pix_format(&dev->node[0].v_fmt.fmt.pix, &mbus_fmt);
++	dev->node[0].v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ 
+-	unicam_calc_format_size_bpl(dev, dev->fmt, &dev->v_fmt);
++	unicam_calc_format_size_bpl(dev, dev->node[0].fmt, &dev->node[0].v_fmt);
+ 
+-	dev->m_fmt = mbus_fmt;
++	dev->node[0].m_fmt = mbus_fmt;
+ 
+ 	return 0;
+ }
+@@ -635,14 +641,14 @@ static void unicam_wr_dma_addr(struct un
+ 
+ 	reg_write(&dev->cfg, UNICAM_IBSA0, dmaaddr);
+ 	reg_write(&dev->cfg, UNICAM_IBEA0,
+-		  dmaaddr + dev->v_fmt.fmt.pix.sizeimage);
++		  dmaaddr + dev->node[0].v_fmt.fmt.pix.sizeimage);
+ }
+ 
+ static inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
+ {
+ 	dma_addr_t start_addr, cur_addr;
+-	unsigned int stride = dev->v_fmt.fmt.pix.bytesperline;
+-	struct unicam_buffer *frm = dev->cur_frm;
++	unsigned int stride = dev->node[0].v_fmt.fmt.pix.bytesperline;
++	struct unicam_buffer *frm = dev->node[0].cur_frm;
+ 
+ 	if (!frm)
+ 		return 0;
+@@ -654,12 +660,12 @@ static inline unsigned int unicam_get_li
+ 
+ static inline void unicam_schedule_next_buffer(struct unicam_device *dev)
+ {
+-	struct unicam_dmaqueue *dma_q = &dev->dma_queue;
++	struct unicam_dmaqueue *dma_q = &dev->node[0].dma_queue;
+ 	struct unicam_buffer *buf;
+ 	dma_addr_t addr;
+ 
+ 	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
+-	dev->next_frm = buf;
++	dev->node[0].next_frm = buf;
+ 	list_del(&buf->list);
+ 
+ 	addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
+@@ -668,11 +674,11 @@ static inline void unicam_schedule_next_
+ 
+ static inline void unicam_process_buffer_complete(struct unicam_device *dev)
+ {
+-	dev->cur_frm->vb.field = dev->m_fmt.field;
+-	dev->cur_frm->vb.sequence = dev->sequence++;
++	dev->node[0].cur_frm->vb.field = dev->node[0].m_fmt.field;
++	dev->node[0].cur_frm->vb.sequence = dev->sequence++;
+ 
+-	vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
+-	dev->cur_frm = dev->next_frm;
++	vb2_buffer_done(&dev->node[0].cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
++	dev->node[0].cur_frm = dev->node[0].next_frm;
+ }
+ 
+ /*
+@@ -687,7 +693,7 @@ static irqreturn_t unicam_isr(int irq, v
+ {
+ 	struct unicam_device *unicam = (struct unicam_device *)dev;
+ 	struct unicam_cfg *cfg = &unicam->cfg;
+-	struct unicam_dmaqueue *dma_q = &unicam->dma_queue;
++	struct unicam_dmaqueue *dma_q = &unicam->node[0].dma_queue;
+ 	unsigned int lines_done = unicam_get_lines_done(dev);
+ 	unsigned int sequence = unicam->sequence;
+ 	int ista, sta;
+@@ -720,8 +726,9 @@ static irqreturn_t unicam_isr(int irq, v
+ 		 * Timestamp is to be when the first data byte was captured,
+ 		 * aka frame start.
+ 		 */
+-		if (unicam->cur_frm)
+-			unicam->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
++		if (unicam->node[0].cur_frm)
++			unicam->node[0].cur_frm->vb.vb2_buf.timestamp =
++				ktime_get_ns();
+ 	}
+ 	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
+ 		/*
+@@ -729,7 +736,8 @@ static irqreturn_t unicam_isr(int irq, v
+ 		 * stop the peripheral. Overwrite the frame we've just
+ 		 * captured instead.
+ 		 */
+-		if (unicam->cur_frm && unicam->cur_frm != unicam->next_frm)
++		if (unicam->node[0].cur_frm &&
++		    unicam->node[0].cur_frm != unicam->node[0].next_frm)
+ 			unicam_process_buffer_complete(unicam);
+ 	}
+ 
+@@ -738,11 +746,11 @@ static irqreturn_t unicam_isr(int irq, v
+ 	 * already started.
+ 	 */
+ 	if (ista & (UNICAM_FSI | UNICAM_LCI) && !(ista & UNICAM_FEI)) {
+-		spin_lock(&unicam->dma_queue_lock);
++		spin_lock(&unicam->node[0].dma_queue_lock);
+ 		if (!list_empty(&dma_q->active) &&
+-		    unicam->cur_frm == unicam->next_frm)
++		    unicam->node[0].cur_frm == unicam->node[0].next_frm)
+ 			unicam_schedule_next_buffer(unicam);
+-		spin_unlock(&unicam->dma_queue_lock);
++		spin_unlock(&unicam->node[0].dma_queue_lock);
+ 	}
+ 
+ 	if (reg_read(&unicam->cfg, UNICAM_ICTL) & UNICAM_FCM) {
+@@ -756,7 +764,8 @@ static irqreturn_t unicam_isr(int irq, v
+ static int unicam_querycap(struct file *file, void *priv,
+ 			   struct v4l2_capability *cap)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	strlcpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
+ 	strlcpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
+@@ -770,7 +779,8 @@ static int unicam_querycap(struct file *
+ static int unicam_enum_fmt_vid_cap(struct file *file, void  *priv,
+ 				   struct v4l2_fmtdesc *f)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	struct v4l2_subdev_mbus_code_enum mbus_code;
+ 	const struct unicam_fmt *fmt = NULL;
+ 	int index = 0;
+@@ -815,9 +825,9 @@ static int unicam_enum_fmt_vid_cap(struc
+ static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
+ 				struct v4l2_format *f)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
+ 
+-	*f = dev->v_fmt;
++	*f = node->v_fmt;
+ 
+ 	return 0;
+ }
+@@ -859,9 +869,11 @@ const struct unicam_fmt *get_first_suppo
+ static int unicam_try_fmt_vid_cap(struct file *file, void *priv,
+ 				  struct v4l2_format *f)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	struct v4l2_subdev_format sd_fmt = {
+ 		.which = V4L2_SUBDEV_FORMAT_TRY,
++		.pad = 0
+ 	};
+ 	struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
+ 	const struct unicam_fmt *fmt;
+@@ -939,8 +951,9 @@ static int unicam_try_fmt_vid_cap(struct
+ static int unicam_s_fmt_vid_cap(struct file *file, void *priv,
+ 				struct v4l2_format *f)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
+-	struct vb2_queue *q = &dev->buffer_queue;
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct vb2_queue *q = &node->buffer_queue;
+ 	struct v4l2_mbus_framefmt mbus_fmt = {0};
+ 	const struct unicam_fmt *fmt;
+ 	int ret;
+@@ -985,17 +998,18 @@ static int unicam_s_fmt_vid_cap(struct f
+ 		return -EINVAL;
+ 	}
+ 
+-	dev->fmt = fmt;
+-	dev->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
+-	dev->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
+-	unicam_reset_format(dev);
+-
+-	unicam_dbg(3, dev, "%s %dx%d, mbus_fmt 0x%08X, V4L2 pix 0x%08X.\n",
+-		   __func__, dev->v_fmt.fmt.pix.width,
+-		   dev->v_fmt.fmt.pix.height, mbus_fmt.code,
+-		   dev->v_fmt.fmt.pix.pixelformat);
++	node->fmt = fmt;
++	node->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
++	node->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
++	unicam_reset_format(node);
++
++	unicam_dbg(3, dev,
++		   "%s %dx%d, mbus_fmt 0x%08X, V4L2 pix 0x%08X.\n",
++		   __func__, node->v_fmt.fmt.pix.width,
++		   node->v_fmt.fmt.pix.height, mbus_fmt.code,
++		   node->v_fmt.fmt.pix.pixelformat);
+ 
+-	*f = dev->v_fmt;
++	*f = node->v_fmt;
+ 
+ 	return 0;
+ }
+@@ -1006,8 +1020,9 @@ static int unicam_queue_setup(struct vb2
+ 			      unsigned int sizes[],
+ 			      struct device *alloc_devs[])
+ {
+-	struct unicam_device *dev = vb2_get_drv_priv(vq);
+-	unsigned int size = dev->v_fmt.fmt.pix.sizeimage;
++	struct unicam_node *node = vb2_get_drv_priv(vq);
++	struct unicam_device *dev = node->dev;
++	unsigned int size = node->v_fmt.fmt.pix.sizeimage;
+ 
+ 	if (vq->num_buffers + *nbuffers < 3)
+ 		*nbuffers = 3 - vq->num_buffers;
+@@ -1029,15 +1044,16 @@ static int unicam_queue_setup(struct vb2
+ 
+ static int unicam_buffer_prepare(struct vb2_buffer *vb)
+ {
+-	struct unicam_device *dev = vb2_get_drv_priv(vb->vb2_queue);
++	struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
++	struct unicam_device *dev = node->dev;
+ 	struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
+ 					      vb.vb2_buf);
+ 	unsigned long size;
+ 
+-	if (WARN_ON(!dev->fmt))
++	if (WARN_ON(!node->fmt))
+ 		return -EINVAL;
+ 
+-	size = dev->v_fmt.fmt.pix.sizeimage;
++	size = node->v_fmt.fmt.pix.sizeimage;
+ 	if (vb2_plane_size(vb, 0) < size) {
+ 		unicam_err(dev, "data will not fit into plane (%lu < %lu)\n",
+ 			   vb2_plane_size(vb, 0), size);
+@@ -1050,15 +1066,15 @@ static int unicam_buffer_prepare(struct
+ 
+ static void unicam_buffer_queue(struct vb2_buffer *vb)
+ {
+-	struct unicam_device *dev = vb2_get_drv_priv(vb->vb2_queue);
++	struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
+ 	struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
+ 					      vb.vb2_buf);
+-	struct unicam_dmaqueue *dma_queue = &dev->dma_queue;
++	struct unicam_dmaqueue *dma_queue = &node->dma_queue;
+ 	unsigned long flags = 0;
+ 
+-	spin_lock_irqsave(&dev->dma_queue_lock, flags);
++	spin_lock_irqsave(&node->dma_queue_lock, flags);
+ 	list_add_tail(&buf->list, &dma_queue->active);
+-	spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
++	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+ }
+ 
+ static void unicam_set_packing_config(struct unicam_device *dev)
+@@ -1066,11 +1082,12 @@ static void unicam_set_packing_config(st
+ 	int pack, unpack;
+ 	u32 val;
+ 
+-	if (dev->v_fmt.fmt.pix.pixelformat == dev->fmt->fourcc) {
++	if (dev->node[0].v_fmt.fmt.pix.pixelformat ==
++	    dev->node[0].fmt->fourcc) {
+ 		unpack = UNICAM_PUM_NONE;
+ 		pack = UNICAM_PPM_NONE;
+ 	} else {
+-		switch (dev->fmt->depth) {
++		switch (dev->node[0].fmt->depth) {
+ 		case 8:
+ 			unpack = UNICAM_PUM_UNPACK8;
+ 			break;
+@@ -1108,17 +1125,17 @@ static void unicam_cfg_image_id(struct u
+ 	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+ 		/* CSI2 mode */
+ 		reg_write(cfg, UNICAM_IDI0,
+-			  (dev->virtual_channel << 6) | dev->fmt->csi_dt);
++			(dev->virtual_channel << 6) | dev->node[0].fmt->csi_dt);
+ 	} else {
+ 		/* CCP2 mode */
+-		reg_write(cfg, UNICAM_IDI0, (0x80 | dev->fmt->csi_dt));
++		reg_write(cfg, UNICAM_IDI0, (0x80 | dev->node[0].fmt->csi_dt));
+ 	}
+ }
+ 
+ static void unicam_start_rx(struct unicam_device *dev, unsigned long addr)
+ {
+ 	struct unicam_cfg *cfg = &dev->cfg;
+-	int line_int_freq = dev->v_fmt.fmt.pix.height >> 2;
++	int line_int_freq = dev->node[0].v_fmt.fmt.pix.height >> 2;
+ 	unsigned int i;
+ 	u32 val;
+ 
+@@ -1266,7 +1283,8 @@ static void unicam_start_rx(struct unica
+ 		reg_write(cfg, UNICAM_DAT3, val);
+ 	}
+ 
+-	reg_write(&dev->cfg, UNICAM_IBLS, dev->v_fmt.fmt.pix.bytesperline);
++	reg_write(&dev->cfg, UNICAM_IBLS,
++		  dev->node[0].v_fmt.fmt.pix.bytesperline);
+ 	unicam_wr_dma_addr(dev, addr);
+ 	unicam_set_packing_config(dev);
+ 	unicam_cfg_image_id(dev);
+@@ -1327,21 +1345,22 @@ static void unicam_disable(struct unicam
+ 
+ static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count)
+ {
+-	struct unicam_device *dev = vb2_get_drv_priv(vq);
+-	struct unicam_dmaqueue *dma_q = &dev->dma_queue;
++	struct unicam_node *node = vb2_get_drv_priv(vq);
++	struct unicam_device *dev = node->dev;
++	struct unicam_dmaqueue *dma_q = &node->dma_queue;
+ 	struct unicam_buffer *buf, *tmp;
+ 	unsigned long addr = 0;
+ 	unsigned long flags;
+ 	int ret;
+ 
+-	spin_lock_irqsave(&dev->dma_queue_lock, flags);
++	spin_lock_irqsave(&node->dma_queue_lock, flags);
+ 	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
+-	dev->cur_frm = buf;
+-	dev->next_frm = buf;
++	node->cur_frm = buf;
++	node->next_frm = buf;
+ 	list_del(&buf->list);
+-	spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
++	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+ 
+-	addr = vb2_dma_contig_plane_dma_addr(&dev->cur_frm->vb.vb2_buf, 0);
++	addr = vb2_dma_contig_plane_dma_addr(&node->cur_frm->vb.vb2_buf, 0);
+ 	dev->sequence = 0;
+ 
+ 	ret = unicam_runtime_get(dev);
+@@ -1411,20 +1430,21 @@ err_release_buffers:
+ 		list_del(&buf->list);
+ 		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
+ 	}
+-	if (dev->cur_frm != dev->next_frm)
+-		vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
++	if (node->cur_frm != node->next_frm)
++		vb2_buffer_done(&node->next_frm->vb.vb2_buf,
+ 				VB2_BUF_STATE_QUEUED);
+-	vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
+-	dev->next_frm = NULL;
+-	dev->cur_frm = NULL;
++	vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
++	node->next_frm = NULL;
++	node->cur_frm = NULL;
+ 
+ 	return ret;
+ }
+ 
+ static void unicam_stop_streaming(struct vb2_queue *vq)
+ {
+-	struct unicam_device *dev = vb2_get_drv_priv(vq);
+-	struct unicam_dmaqueue *dma_q = &dev->dma_queue;
++	struct unicam_node *node = vb2_get_drv_priv(vq);
++	struct unicam_device *dev = node->dev;
++	struct unicam_dmaqueue *dma_q = &node->dma_queue;
+ 	struct unicam_buffer *buf, *tmp;
+ 	unsigned long flags;
+ 
+@@ -1434,22 +1454,24 @@ static void unicam_stop_streaming(struct
+ 	unicam_disable(dev);
+ 
+ 	/* Release all active buffers */
+-	spin_lock_irqsave(&dev->dma_queue_lock, flags);
++	spin_lock_irqsave(&node->dma_queue_lock, flags);
+ 	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
+ 		list_del(&buf->list);
+ 		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ 	}
+ 
+-	if (dev->cur_frm == dev->next_frm) {
+-		vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
++	if (node->cur_frm == node->next_frm) {
++		vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
++				VB2_BUF_STATE_ERROR);
+ 	} else {
+-		vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+-		vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
++		vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
++				VB2_BUF_STATE_ERROR);
++		vb2_buffer_done(&node->next_frm->vb.vb2_buf,
+ 				VB2_BUF_STATE_ERROR);
+ 	}
+-	dev->cur_frm = NULL;
+-	dev->next_frm = NULL;
+-	spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
++	node->cur_frm = NULL;
++	node->next_frm = NULL;
++	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+ 
+ 	clk_disable_unprepare(dev->clock);
+ 	unicam_runtime_put(dev);
+@@ -1458,7 +1480,8 @@ static void unicam_stop_streaming(struct
+ static int unicam_enum_input(struct file *file, void *priv,
+ 			     struct v4l2_input *inp)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	if (inp->index != 0)
+ 		return -EINVAL;
+@@ -1506,21 +1529,24 @@ static int unicam_s_input(struct file *f
+ static int unicam_querystd(struct file *file, void *priv,
+ 			   v4l2_std_id *std)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, video, querystd, std);
+ }
+ 
+ static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, video, g_std, std);
+ }
+ 
+ static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	int ret;
+ 	v4l2_std_id current_std;
+ 
+@@ -1531,29 +1557,31 @@ static int unicam_s_std(struct file *fil
+ 	if (std == current_std)
+ 		return 0;
+ 
+-	if (vb2_is_busy(&dev->buffer_queue))
++	if (vb2_is_busy(&node->buffer_queue))
+ 		return -EBUSY;
+ 
+ 	ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
+ 
+ 	/* Force recomputation of bytesperline */
+-	dev->v_fmt.fmt.pix.bytesperline = 0;
++	node->v_fmt.fmt.pix.bytesperline = 0;
+ 
+-	unicam_reset_format(dev);
++	unicam_reset_format(node);
+ 
+ 	return ret;
+ }
+ 
+ static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
+ }
+ 
+ static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
+ }
+@@ -1561,7 +1589,8 @@ static int unicam_g_edid(struct file *fi
+ static int unicam_enum_framesizes(struct file *file, void *priv,
+ 				  struct v4l2_frmsizeenum *fsize)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	const struct unicam_fmt *fmt;
+ 	struct v4l2_subdev_frame_size_enum fse;
+ 	int ret;
+@@ -1596,7 +1625,8 @@ static int unicam_enum_framesizes(struct
+ static int unicam_enum_frameintervals(struct file *file, void *priv,
+ 				      struct v4l2_frmivalenum *fival)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	const struct unicam_fmt *fmt;
+ 	struct v4l2_subdev_frame_interval_enum fie = {
+ 		.index = fival->index,
+@@ -1624,14 +1654,16 @@ static int unicam_enum_frameintervals(st
+ 
+ static int unicam_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_g_parm_cap(video_devdata(file), dev->sensor, a);
+ }
+ 
+ static int unicam_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_s_parm_cap(video_devdata(file), dev->sensor, a);
+ }
+@@ -1639,7 +1671,8 @@ static int unicam_s_parm(struct file *fi
+ static int unicam_g_dv_timings(struct file *file, void *priv,
+ 			       struct v4l2_dv_timings *timings)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
+ }
+@@ -1647,7 +1680,8 @@ static int unicam_g_dv_timings(struct fi
+ static int unicam_s_dv_timings(struct file *file, void *priv,
+ 			       struct v4l2_dv_timings *timings)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	struct v4l2_dv_timings current_timings;
+ 	int ret;
+ 
+@@ -1657,15 +1691,15 @@ static int unicam_s_dv_timings(struct fi
+ 	if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
+ 		return 0;
+ 
+-	if (vb2_is_busy(&dev->buffer_queue))
++	if (vb2_is_busy(&node->buffer_queue))
+ 		return -EBUSY;
+ 
+ 	ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
+ 
+ 	/* Force recomputation of bytesperline */
+-	dev->v_fmt.fmt.pix.bytesperline = 0;
++	node->v_fmt.fmt.pix.bytesperline = 0;
+ 
+-	unicam_reset_format(dev);
++	unicam_reset_format(node);
+ 
+ 	return ret;
+ }
+@@ -1673,7 +1707,8 @@ static int unicam_s_dv_timings(struct fi
+ static int unicam_query_dv_timings(struct file *file, void *priv,
+ 				   struct v4l2_dv_timings *timings)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
+ }
+@@ -1681,7 +1716,8 @@ static int unicam_query_dv_timings(struc
+ static int unicam_enum_dv_timings(struct file *file, void *priv,
+ 				  struct v4l2_enum_dv_timings *timings)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
+ }
+@@ -1689,7 +1725,8 @@ static int unicam_enum_dv_timings(struct
+ static int unicam_dv_timings_cap(struct file *file, void *priv,
+ 				 struct v4l2_dv_timings_cap *cap)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 
+ 	return v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
+ }
+@@ -1707,7 +1744,8 @@ static int unicam_subscribe_event(struct
+ 
+ static int unicam_log_status(struct file *file, void *fh)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	struct unicam_cfg *cfg = &dev->cfg;
+ 	u32 reg;
+ 
+@@ -1716,10 +1754,10 @@ static int unicam_log_status(struct file
+ 
+ 	unicam_info(dev, "-----Receiver status-----\n");
+ 	unicam_info(dev, "V4L2 width/height:   %ux%u\n",
+-		    dev->v_fmt.fmt.pix.width, dev->v_fmt.fmt.pix.height);
+-	unicam_info(dev, "Mediabus format:     %08x\n", dev->fmt->code);
++		    node->v_fmt.fmt.pix.width, node->v_fmt.fmt.pix.height);
++	unicam_info(dev, "Mediabus format:     %08x\n", node->fmt->code);
+ 	unicam_info(dev, "V4L2 format:         %08x\n",
+-		    dev->v_fmt.fmt.pix.pixelformat);
++		    node->v_fmt.fmt.pix.pixelformat);
+ 	reg = reg_read(&dev->cfg, UNICAM_IPIPE);
+ 	unicam_info(dev, "Unpacking/packing:   %u / %u\n",
+ 		    get_field(reg, UNICAM_PUM_MASK),
+@@ -1744,7 +1782,7 @@ static void unicam_notify(struct v4l2_su
+ 
+ 	switch (notification) {
+ 	case V4L2_DEVICE_NOTIFY_EVENT:
+-		v4l2_event_queue(&dev->video_dev, arg);
++		v4l2_event_queue(&dev->node[0].video_dev, arg);
+ 		break;
+ 	default:
+ 		break;
+@@ -1767,10 +1805,11 @@ static const struct vb2_ops unicam_video
+  */
+ static int unicam_open(struct file *file)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	int ret;
+ 
+-	mutex_lock(&dev->lock);
++	mutex_lock(&node->lock);
+ 
+ 	ret = v4l2_fh_open(file);
+ 	if (ret) {
+@@ -1790,18 +1829,19 @@ static int unicam_open(struct file *file
+ 	ret = 0;
+ 
+ unlock:
+-	mutex_unlock(&dev->lock);
++	mutex_unlock(&node->lock);
+ 	return ret;
+ }
+ 
+ static int unicam_release(struct file *file)
+ {
+-	struct unicam_device *dev = video_drvdata(file);
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
+ 	struct v4l2_subdev *sd = dev->sensor;
+ 	bool fh_singular;
+ 	int ret;
+ 
+-	mutex_lock(&dev->lock);
++	mutex_lock(&node->lock);
+ 
+ 	fh_singular = v4l2_fh_is_singular_file(file);
+ 
+@@ -1810,7 +1850,7 @@ static int unicam_release(struct file *f
+ 	if (fh_singular)
+ 		v4l2_subdev_call(sd, core, s_power, 0);
+ 
+-	mutex_unlock(&dev->lock);
++	mutex_unlock(&node->lock);
+ 
+ 	return ret;
+ }
+@@ -1892,7 +1932,8 @@ unicam_async_bound(struct v4l2_async_not
+ 	return 0;
+ }
+ 
+-static int unicam_probe_complete(struct unicam_device *unicam)
++static int register_node(struct unicam_device *unicam, struct unicam_node *node,
++			 enum v4l2_buf_type type, int pad_id)
+ {
+ 	struct video_device *vdev;
+ 	struct vb2_queue *q;
+@@ -1900,15 +1941,7 @@ static int unicam_probe_complete(struct
+ 	const struct unicam_fmt *fmt;
+ 	int ret;
+ 
+-	v4l2_set_subdev_hostdata(unicam->sensor, unicam);
+-
+-	unicam->v4l2_dev.notify = unicam_notify;
+-
+-	unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
+-	if (!unicam->sensor_config)
+-		return -ENOMEM;
+-
+-	ret = __subdev_get_format(unicam, &mbus_fmt);
++	ret = __subdev_get_format(unicam, &mbus_fmt, pad_id);
+ 	if (ret) {
+ 		unicam_err(unicam, "Failed to get_format - ret %d\n", ret);
+ 		return ret;
+@@ -1938,14 +1971,15 @@ static int unicam_probe_complete(struct
+ 			return -EINVAL;
+ 	}
+ 
+-	unicam->fmt = fmt;
++	node->pad_id = pad_id;
++	node->fmt = fmt;
+ 	if (fmt->fourcc)
+-		unicam->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++		node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+ 	else
+-		unicam->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
++		node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
+ 
+ 	/* Read current subdev format */
+-	unicam_reset_format(unicam);
++	unicam_reset_format(node);
+ 
+ 	if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_std_id tvnorms;
+@@ -1962,27 +1996,30 @@ static int unicam_probe_complete(struct
+ 				       g_tvnorms, &tvnorms);
+ 		if (WARN_ON(ret))
+ 			return -EINVAL;
+-		unicam->video_dev.tvnorms |= tvnorms;
++		node->video_dev.tvnorms |= tvnorms;
+ 	}
+ 
+-	spin_lock_init(&unicam->dma_queue_lock);
+-	mutex_init(&unicam->lock);
++	spin_lock_init(&node->dma_queue_lock);
++	mutex_init(&node->lock);
+ 
+-	/* Add controls from the subdevice */
+-	ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
+-				    unicam->sensor->ctrl_handler, NULL, true);
+-	if (ret < 0)
+-		return ret;
++	if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
++		/* Add controls from the subdevice */
++		ret = v4l2_ctrl_add_handler(&node->ctrl_handler,
++					    unicam->sensor->ctrl_handler, NULL,
++					    true);
++		if (ret < 0)
++			return ret;
++	}
+ 
+-	q = &unicam->buffer_queue;
+-	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++	q = &node->buffer_queue;
++	q->type = type;
+ 	q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
+-	q->drv_priv = unicam;
++	q->drv_priv = node;
+ 	q->ops = &unicam_video_qops;
+ 	q->mem_ops = &vb2_dma_contig_memops;
+ 	q->buf_struct_size = sizeof(struct unicam_buffer);
+ 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+-	q->lock = &unicam->lock;
++	q->lock = &node->lock;
+ 	q->min_buffers_needed = 2;
+ 	q->dev = &unicam->pdev->dev;
+ 
+@@ -1992,9 +2029,9 @@ static int unicam_probe_complete(struct
+ 		return ret;
+ 	}
+ 
+-	INIT_LIST_HEAD(&unicam->dma_queue.active);
++	INIT_LIST_HEAD(&node->dma_queue.active);
+ 
+-	vdev = &unicam->video_dev;
++	vdev = &node->video_dev;
+ 	strlcpy(vdev->name, UNICAM_MODULE_NAME, sizeof(vdev->name));
+ 	vdev->release = video_device_release_empty;
+ 	vdev->fops = &unicam_fops;
+@@ -2002,69 +2039,113 @@ static int unicam_probe_complete(struct
+ 	vdev->v4l2_dev = &unicam->v4l2_dev;
+ 	vdev->vfl_dir = VFL_DIR_RX;
+ 	vdev->queue = q;
+-	vdev->lock = &unicam->lock;
++	vdev->lock = &node->lock;
+ 	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
+ 			    V4L2_CAP_READWRITE;
+-
+ 	/* If the source has no controls then remove our ctrl handler. */
+-	if (list_empty(&unicam->ctrl_handler.ctrls))
++	if (list_empty(&node->ctrl_handler.ctrls))
+ 		unicam->v4l2_dev.ctrl_handler = NULL;
+ 
+-	video_set_drvdata(vdev, unicam);
++	node->dev = unicam;
++	video_set_drvdata(vdev, node);
+ 	vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
+ 
+ 	if (!v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_STD);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_STD);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUMSTD);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_STD);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUMSTD);
+ 	}
+ 	if (!v4l2_subdev_has_op(unicam->sensor, video, querystd))
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERYSTD);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
+ 	if (!v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_EDID);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_EDID);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_DV_TIMINGS_CAP);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_DV_TIMINGS);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_DV_TIMINGS);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUM_DV_TIMINGS);
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERY_DV_TIMINGS);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_EDID);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_EDID);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_DV_TIMINGS_CAP);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_DV_TIMINGS);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_DV_TIMINGS);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_DV_TIMINGS);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERY_DV_TIMINGS);
+ 	}
+ 	if (!v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
+-		v4l2_disable_ioctl(&unicam->video_dev,
++		v4l2_disable_ioctl(&node->video_dev,
+ 				   VIDIOC_ENUM_FRAMEINTERVALS);
+ 	if (!v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_PARM);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
+ 	if (!v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_PARM);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
+ 
+ 	if (!v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
+-		v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUM_FRAMESIZES);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_FRAMESIZES);
+ 
+ 	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+ 	if (ret) {
+ 		unicam_err(unicam, "Unable to register video device.\n");
+ 		return ret;
+ 	}
++	node->registered = true;
+ 
+-	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
++	ret = media_create_pad_link(&unicam->sensor->entity,
++				    0, &node->video_dev.entity, 0,
++				    MEDIA_LNK_FL_ENABLED |
++				    MEDIA_LNK_FL_IMMUTABLE);
++	if (ret)
++		unicam_err(unicam, "Unable to create pad links.\n");
++
++	return ret;
++}
++
++static void unregister_nodes(struct unicam_device *unicam)
++{
++	if (unicam->node[0].registered) {
++		video_unregister_device(&unicam->node[0].video_dev);
++		unicam->node[0].registered = false;
++	}
++	if (unicam->node[1].registered) {
++		video_unregister_device(&unicam->node[1].video_dev);
++		unicam->node[1].registered = false;
++	}
++}
++
++static int unicam_probe_complete(struct unicam_device *unicam)
++{
++	int ret;
++
++	v4l2_set_subdev_hostdata(unicam->sensor, unicam);
++
++	unicam->v4l2_dev.notify = unicam_notify;
++
++	unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
++	if (!unicam->sensor_config)
++		return -ENOMEM;
++
++	ret = register_node(unicam, &unicam->node[0],
++			    V4L2_BUF_TYPE_VIDEO_CAPTURE, 0);
+ 	if (ret) {
+-		unicam_err(unicam,
+-			   "Unable to register subdev nodes.\n");
+-		video_unregister_device(&unicam->video_dev);
+-		return ret;
++		unicam_err(unicam, "Unable to register subdev node 0.\n");
++		goto unregister;
++	}
++	if (unicam->sensor->entity.num_pads >= 2) {
++		ret = register_node(unicam, &unicam->node[1],
++				    V4L2_BUF_TYPE_META_CAPTURE, 1);
++		if (ret) {
++			unicam_err(unicam,
++				   "Unable to register subdev node 1.\n");
++			goto unregister;
++		}
+ 	}
+ 
+-	ret = media_create_pad_link(&unicam->sensor->entity, 0,
+-				    &unicam->video_dev.entity, 0,
+-				    MEDIA_LNK_FL_ENABLED |
+-				    MEDIA_LNK_FL_IMMUTABLE);
++	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
+ 	if (ret) {
+-		unicam_err(unicam, "Unable to create pad links.\n");
+-		video_unregister_device(&unicam->video_dev);
+-		return ret;
++		unicam_err(unicam, "Unable to register subdev nodes.\n");
++		goto unregister;
+ 	}
+ 
+ 	return 0;
++
++unregister:
++	unregister_nodes(unicam);
++
++	return ret;
+ }
+ 
+ static int unicam_async_complete(struct v4l2_async_notifier *notifier)
+@@ -2274,7 +2355,8 @@ static int unicam_probe(struct platform_
+ 		 pdev->dev.driver->name, dev_name(&pdev->dev));
+ 	unicam->mdev.hw_revision = 1;
+ 
+-	media_entity_pads_init(&unicam->video_dev.entity, 1, &unicam->pad);
++	media_entity_pads_init(&unicam->node[0].video_dev.entity, 1,
++			       &unicam->node[0].pad);
+ 	media_device_init(&unicam->mdev);
+ 
+ 	unicam->v4l2_dev.mdev = &unicam->mdev;
+@@ -2294,7 +2376,7 @@ static int unicam_probe(struct platform_
+ 	}
+ 
+ 	/* Reserve space for the controls */
+-	hdl = &unicam->ctrl_handler;
++	hdl = &unicam->node[0].ctrl_handler;
+ 	ret = v4l2_ctrl_handler_init(hdl, 16);
+ 	if (ret < 0)
+ 		goto media_unregister;
+@@ -2335,9 +2417,9 @@ static int unicam_remove(struct platform
+ 	pm_runtime_disable(&pdev->dev);
+ 
+ 	v4l2_async_notifier_unregister(&unicam->notifier);
+-	v4l2_ctrl_handler_free(&unicam->ctrl_handler);
++	v4l2_ctrl_handler_free(&unicam->node[0].ctrl_handler);
+ 	v4l2_device_unregister(&unicam->v4l2_dev);
+-	video_unregister_device(&unicam->video_dev);
++	unregister_nodes(unicam);
+ 	if (unicam->sensor_config)
+ 		v4l2_subdev_free_pad_config(unicam->sensor_config);
+ 	media_device_unregister(&unicam->mdev);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0214-media-bcm2835-unicam-Add-embedded-data-node.patch b/target/linux/bcm27xx/patches-5.15/950-0214-media-bcm2835-unicam-Add-embedded-data-node.patch
new file mode 100644
index 0000000000..84f80b5559
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0214-media-bcm2835-unicam-Add-embedded-data-node.patch
@@ -0,0 +1,1170 @@
+From 85fc685aabde594162e398c048b901d31332c2e6 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 16 Apr 2020 11:35:41 +0100
+Subject: [PATCH] media: bcm2835-unicam: Add embedded data node.
+
+This patch adds a new node in the bcm2835-unicam driver to support
+CSI-2 embedded data streams.  The subdevice is queried to see if
+embedded data is available from the sensor.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 667 +++++++++++++-----
+ 1 file changed, 474 insertions(+), 193 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -109,8 +109,15 @@ MODULE_PARM_DESC(debug, "Debug level 0-3
+ /* Define a nominal minimum image size */
+ #define MIN_WIDTH	16
+ #define MIN_HEIGHT	16
+-/* Maximum number of simulataneous streams Uncaim can handle. */
+-#define MAX_NODES	2
++/* Default size of the embedded buffer */
++#define UNICAM_EMBEDDED_SIZE	8192
++
++enum pad_types {
++	IMAGE_PAD,
++	METADATA_PAD,
++	MAX_NODES
++};
++
+ /*
+  * struct unicam_fmt - Unicam media bus format information
+  * @pixelformat: V4L2 pixel format FCC identifier. 0 if n/a.
+@@ -327,6 +334,12 @@ static const struct unicam_fmt formats[]
+ 		.depth		= 12,
+ 		.csi_dt		= 0x2c,
+ 	},
++	/* Embedded data format */
++	{
++		.fourcc		= V4L2_META_FMT_SENSOR_DATA,
++		.code		= MEDIA_BUS_FMT_SENSOR_DATA,
++		.depth		= 8,
++	}
+ };
+ 
+ struct unicam_dmaqueue {
+@@ -348,7 +361,9 @@ struct unicam_cfg {
+ #define MAX_POSSIBLE_PIX_FMTS (ARRAY_SIZE(formats))
+ 
+ struct unicam_node {
+-	bool registered;
++	int registered;
++	int open;
++	int streaming;
+ 	unsigned int pad_id;
+ 	/* Pointer pointing to current v4l2_buffer */
+ 	struct unicam_buffer *cur_frm;
+@@ -374,6 +389,7 @@ struct unicam_node {
+ 	struct unicam_device *dev;
+ 	struct media_pad pad;
+ 	struct v4l2_ctrl_handler ctrl_handler;
++	unsigned int embedded_lines;
+ };
+ 
+ struct unicam_device {
+@@ -401,8 +417,6 @@ struct unicam_device {
+ 	struct v4l2_subdev *sensor;
+ 	/* Pad config for the sensor */
+ 	struct v4l2_subdev_pad_config *sensor_config;
+-	/* current input at the sub device */
+-	int current_input;
+ 
+ 	unsigned int virtual_channel;
+ 	enum v4l2_mbus_type bus_type;
+@@ -413,10 +427,7 @@ struct unicam_device {
+ 	unsigned int bus_flags;
+ 	unsigned int max_data_lanes;
+ 	unsigned int active_data_lanes;
+-
+-	struct v4l2_rect crop;
+-	/* Flag to denote that we are processing buffers */
+-	int streaming;
++	bool sensor_embedded_data;
+ 
+ 	struct unicam_node node[MAX_NODES];
+ };
+@@ -488,6 +499,7 @@ static int check_mbus_format(struct unic
+ 	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
+ 		memset(&mbus_code, 0, sizeof(mbus_code));
+ 		mbus_code.index = i;
++		mbus_code.pad = IMAGE_PAD;
+ 		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ 
+ 		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
+@@ -552,10 +564,11 @@ static int __subdev_get_format(struct un
+ }
+ 
+ static int __subdev_set_format(struct unicam_device *dev,
+-			       struct v4l2_mbus_framefmt *fmt)
++			       struct v4l2_mbus_framefmt *fmt, int pad_id)
+ {
+ 	struct v4l2_subdev_format sd_fmt = {
+ 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.pad = pad_id
+ 	};
+ 	int ret;
+ 
+@@ -566,8 +579,12 @@ static int __subdev_set_format(struct un
+ 	if (ret < 0)
+ 		return ret;
+ 
+-	unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
+-		   fmt->width, fmt->height, fmt->code);
++	if (pad_id == IMAGE_PAD)
++		unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__, fmt->width,
++			   fmt->height, fmt->code);
++	else
++		unicam_dbg(1, dev, "%s Embedded data code:%04x\n", __func__,
++			   sd_fmt.format.code);
+ 
+ 	return 0;
+ }
+@@ -609,46 +626,70 @@ static int unicam_reset_format(struct un
+ 	struct v4l2_mbus_framefmt mbus_fmt;
+ 	int ret;
+ 
+-	ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
+-	if (ret) {
+-		unicam_err(dev, "Failed to get_format - ret %d\n", ret);
+-		return ret;
+-	}
++	if (dev->sensor_embedded_data || node->pad_id != METADATA_PAD) {
++		ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
++		if (ret) {
++			unicam_err(dev, "Failed to get_format - ret %d\n", ret);
++			return ret;
++		}
+ 
+-	if (mbus_fmt.code != dev->node[0].fmt->code) {
+-		unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
+-			   dev->node[0].fmt->code, mbus_fmt.code);
+-		return ret;
++		if (mbus_fmt.code != node->fmt->code) {
++			unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
++				   node->fmt->code, mbus_fmt.code);
++			return ret;
++		}
+ 	}
+ 
+-	v4l2_fill_pix_format(&dev->node[0].v_fmt.fmt.pix, &mbus_fmt);
+-	dev->node[0].v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+-
+-	unicam_calc_format_size_bpl(dev, dev->node[0].fmt, &dev->node[0].v_fmt);
+-
+-	dev->node[0].m_fmt = mbus_fmt;
++	if (node->pad_id == IMAGE_PAD) {
++		v4l2_fill_pix_format(&node->v_fmt.fmt.pix, &mbus_fmt);
++		node->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++		unicam_calc_format_size_bpl(dev, node->fmt, &node->v_fmt);
++	} else {
++		node->v_fmt.type = V4L2_BUF_TYPE_META_CAPTURE;
++		node->v_fmt.fmt.meta.dataformat = V4L2_META_FMT_SENSOR_DATA;
++		if (dev->sensor_embedded_data) {
++			node->v_fmt.fmt.meta.buffersize =
++					mbus_fmt.width * mbus_fmt.height;
++			node->embedded_lines = mbus_fmt.height;
++		} else {
++			node->v_fmt.fmt.meta.buffersize = UNICAM_EMBEDDED_SIZE;
++			node->embedded_lines = 1;
++		}
++	}
+ 
++	node->m_fmt = mbus_fmt;
+ 	return 0;
+ }
+ 
+-static void unicam_wr_dma_addr(struct unicam_device *dev, dma_addr_t dmaaddr)
++static void unicam_wr_dma_addr(struct unicam_device *dev, dma_addr_t dmaaddr,
++			       int pad_id)
+ {
++	dma_addr_t endaddr;
++
+ 	/*
+ 	 * dmaaddr should be a 32-bit address with the top two bits set to 0x3
+ 	 * to signify uncached access through the Videocore memory controller.
+ 	 */
+ 	BUG_ON((dmaaddr >> 30) != 0x3);
+ 
+-	reg_write(&dev->cfg, UNICAM_IBSA0, dmaaddr);
+-	reg_write(&dev->cfg, UNICAM_IBEA0,
+-		  dmaaddr + dev->node[0].v_fmt.fmt.pix.sizeimage);
++	if (pad_id == IMAGE_PAD) {
++		endaddr = dmaaddr +
++			  dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage;
++		reg_write(&dev->cfg, UNICAM_IBSA0, dmaaddr);
++		reg_write(&dev->cfg, UNICAM_IBEA0, endaddr);
++	} else {
++		endaddr = dmaaddr +
++			  dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
++		reg_write(&dev->cfg, UNICAM_DBSA0, dmaaddr);
++		reg_write(&dev->cfg, UNICAM_DBEA0, endaddr);
++	}
+ }
+ 
+ static inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
+ {
+ 	dma_addr_t start_addr, cur_addr;
+-	unsigned int stride = dev->node[0].v_fmt.fmt.pix.bytesperline;
+-	struct unicam_buffer *frm = dev->node[0].cur_frm;
++	unsigned int stride = dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline;
++	struct unicam_buffer *frm = dev->node[IMAGE_PAD].cur_frm;
+ 
+ 	if (!frm)
+ 		return 0;
+@@ -658,27 +699,51 @@ static inline unsigned int unicam_get_li
+ 	return (unsigned int)(cur_addr - start_addr) / stride;
+ }
+ 
+-static inline void unicam_schedule_next_buffer(struct unicam_device *dev)
++static inline void unicam_schedule_next_buffer(struct unicam_node *node)
+ {
+-	struct unicam_dmaqueue *dma_q = &dev->node[0].dma_queue;
++	struct unicam_device *dev = node->dev;
++	struct unicam_dmaqueue *dma_q = &node->dma_queue;
+ 	struct unicam_buffer *buf;
+ 	dma_addr_t addr;
+ 
+ 	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
+-	dev->node[0].next_frm = buf;
++	node->next_frm = buf;
+ 	list_del(&buf->list);
+ 
+ 	addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
+-	unicam_wr_dma_addr(dev, addr);
++	unicam_wr_dma_addr(dev, addr, node->pad_id);
+ }
+ 
+-static inline void unicam_process_buffer_complete(struct unicam_device *dev)
++static inline void unicam_process_buffer_complete(struct unicam_node *node,
++						  unsigned int sequence)
+ {
+-	dev->node[0].cur_frm->vb.field = dev->node[0].m_fmt.field;
+-	dev->node[0].cur_frm->vb.sequence = dev->sequence++;
++	node->cur_frm->vb.field = node->m_fmt.field;
++	node->cur_frm->vb.sequence = sequence;
++
++	vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
++	node->cur_frm = node->next_frm;
++}
+ 
+-	vb2_buffer_done(&dev->node[0].cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
+-	dev->node[0].cur_frm = dev->node[0].next_frm;
++static int unicam_num_nodes_streaming(struct unicam_device *dev)
++{
++	return dev->node[IMAGE_PAD].streaming +
++	       dev->node[METADATA_PAD].streaming;
++}
++
++static int unicam_all_nodes_streaming(struct unicam_device *dev)
++{
++	int ret;
++
++	ret = dev->node[IMAGE_PAD].open && dev->node[IMAGE_PAD].streaming;
++	ret &= !dev->node[METADATA_PAD].open ||
++	       dev->node[METADATA_PAD].streaming;
++	return ret;
++}
++
++static int unicam_all_nodes_disabled(struct unicam_device *dev)
++{
++	return !dev->node[IMAGE_PAD].streaming &&
++	       !dev->node[METADATA_PAD].streaming;
+ }
+ 
+ /*
+@@ -693,10 +758,12 @@ static irqreturn_t unicam_isr(int irq, v
+ {
+ 	struct unicam_device *unicam = (struct unicam_device *)dev;
+ 	struct unicam_cfg *cfg = &unicam->cfg;
+-	struct unicam_dmaqueue *dma_q = &unicam->node[0].dma_queue;
+ 	unsigned int lines_done = unicam_get_lines_done(dev);
+ 	unsigned int sequence = unicam->sequence;
++	int num_nodes_streaming = unicam_num_nodes_streaming(dev);
+ 	int ista, sta;
++	u64 ts;
++	int i;
+ 
+ 	/*
+ 	 * Don't service interrupts if not streaming.
+@@ -704,7 +771,7 @@ static irqreturn_t unicam_isr(int irq, v
+ 	 * peripheral without the kernel knowing (that
+ 	 * shouldn't happen, but causes issues if it does).
+ 	 */
+-	if (!unicam->streaming)
++	if (unicam_all_nodes_disabled(unicam))
+ 		return IRQ_HANDLED;
+ 
+ 	sta = reg_read(cfg, UNICAM_STA);
+@@ -726,9 +793,12 @@ static irqreturn_t unicam_isr(int irq, v
+ 		 * Timestamp is to be when the first data byte was captured,
+ 		 * aka frame start.
+ 		 */
+-		if (unicam->node[0].cur_frm)
+-			unicam->node[0].cur_frm->vb.vb2_buf.timestamp =
+-				ktime_get_ns();
++		ts = ktime_get_ns();
++		for (i = 0; i < num_nodes_streaming; i++) {
++			if (unicam->node[i].cur_frm)
++				unicam->node[i].cur_frm->vb.vb2_buf.timestamp =
++								ts;
++		}
+ 	}
+ 	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
+ 		/*
+@@ -736,9 +806,13 @@ static irqreturn_t unicam_isr(int irq, v
+ 		 * stop the peripheral. Overwrite the frame we've just
+ 		 * captured instead.
+ 		 */
+-		if (unicam->node[0].cur_frm &&
+-		    unicam->node[0].cur_frm != unicam->node[0].next_frm)
+-			unicam_process_buffer_complete(unicam);
++		for (i = 0; i < num_nodes_streaming; i++) {
++			if (unicam->node[i].cur_frm &&
++			    unicam->node[i].cur_frm != unicam->node[i].next_frm)
++				unicam_process_buffer_complete(&unicam->node[i],
++							       sequence);
++		}
++		unicam->sequence++;
+ 	}
+ 
+ 	/* Cannot swap buffer at frame end, there may be a race condition
+@@ -746,11 +820,13 @@ static irqreturn_t unicam_isr(int irq, v
+ 	 * already started.
+ 	 */
+ 	if (ista & (UNICAM_FSI | UNICAM_LCI) && !(ista & UNICAM_FEI)) {
+-		spin_lock(&unicam->node[0].dma_queue_lock);
+-		if (!list_empty(&dma_q->active) &&
+-		    unicam->node[0].cur_frm == unicam->node[0].next_frm)
+-			unicam_schedule_next_buffer(unicam);
+-		spin_unlock(&unicam->node[0].dma_queue_lock);
++		for (i = 0; i < num_nodes_streaming; i++) {
++			spin_lock(&unicam->node[i].dma_queue_lock);
++			if (!list_empty(&unicam->node[i].dma_queue.active) &&
++			    unicam->node[i].cur_frm == unicam->node[i].next_frm)
++				unicam_schedule_next_buffer(&unicam->node[i]);
++			spin_unlock(&unicam->node[i].dma_queue_lock);
++		}
+ 	}
+ 
+ 	if (reg_read(&unicam->cfg, UNICAM_ICTL) & UNICAM_FCM) {
+@@ -773,6 +849,15 @@ static int unicam_querycap(struct file *
+ 	snprintf(cap->bus_info, sizeof(cap->bus_info),
+ 		 "platform:%s", dev->v4l2_dev.name);
+ 
++	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
++			    V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS |
++			    V4L2_CAP_META_CAPTURE;
++
++	if (node->pad_id == IMAGE_PAD)
++		cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
++	else
++		cap->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
++
+ 	return 0;
+ }
+ 
+@@ -787,9 +872,14 @@ static int unicam_enum_fmt_vid_cap(struc
+ 	int ret = 0;
+ 	int i;
+ 
++	if (node->pad_id == METADATA_PAD)
++		return -EINVAL;
++
+ 	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
+ 		memset(&mbus_code, 0, sizeof(mbus_code));
+ 		mbus_code.index = i;
++		mbus_code.pad = IMAGE_PAD;
++		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ 
+ 		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
+ 				       NULL, &mbus_code);
+@@ -827,6 +917,9 @@ static int unicam_g_fmt_vid_cap(struct f
+ {
+ 	struct unicam_node *node = video_drvdata(file);
+ 
++	if (node->pad_id == METADATA_PAD)
++		return -EINVAL;
++
+ 	*f = node->v_fmt;
+ 
+ 	return 0;
+@@ -843,6 +936,9 @@ const struct unicam_fmt *get_first_suppo
+ 	for (j = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++j) {
+ 		memset(&mbus_code, 0, sizeof(mbus_code));
+ 		mbus_code.index = j;
++		mbus_code.pad = IMAGE_PAD;
++		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
++
+ 		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
+ 				       &mbus_code);
+ 		if (ret < 0) {
+@@ -873,12 +969,15 @@ static int unicam_try_fmt_vid_cap(struct
+ 	struct unicam_device *dev = node->dev;
+ 	struct v4l2_subdev_format sd_fmt = {
+ 		.which = V4L2_SUBDEV_FORMAT_TRY,
+-		.pad = 0
++		.pad = IMAGE_PAD
+ 	};
+ 	struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
+ 	const struct unicam_fmt *fmt;
+ 	int ret;
+ 
++	if (node->pad_id == METADATA_PAD)
++		return -EINVAL;
++
+ 	fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
+ 	if (!fmt) {
+ 		/* Pixel format not supported by unicam. Choose the first
+@@ -983,7 +1082,7 @@ static int unicam_s_fmt_vid_cap(struct f
+ 
+ 	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
+ 
+-	ret = __subdev_set_format(dev, &mbus_fmt);
++	ret = __subdev_set_format(dev, &mbus_fmt, node->pad_id);
+ 	if (ret) {
+ 		unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
+ 			   __func__, ret);
+@@ -1014,6 +1113,106 @@ static int unicam_s_fmt_vid_cap(struct f
+ 	return 0;
+ }
+ 
++static int unicam_enum_fmt_meta_cap(struct file *file, void *priv,
++				    struct v4l2_fmtdesc *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_mbus_code_enum mbus_code;
++	const struct unicam_fmt *fmt = NULL;
++	int ret = 0;
++
++	if (node->pad_id != METADATA_PAD || f->index != 0)
++		return -EINVAL;
++
++	if (dev->sensor_embedded_data) {
++		memset(&mbus_code, 0, sizeof(mbus_code));
++		mbus_code.index = f->index;
++		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
++		mbus_code.pad = METADATA_PAD;
++
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
++				       &mbus_code);
++		if (ret < 0) {
++			unicam_dbg(2, dev,
++				   "subdev->enum_mbus_code idx 0 returned %d - index invalid\n",
++				   ret);
++			return -EINVAL;
++		}
++	} else {
++		mbus_code.code = MEDIA_BUS_FMT_SENSOR_DATA;
++	}
++
++	fmt = find_format_by_code(mbus_code.code);
++	if (fmt)
++		f->pixelformat = fmt->fourcc;
++
++	return 0;
++}
++
++static int unicam_g_fmt_meta_cap(struct file *file, void *priv,
++				 struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	if (node->pad_id != METADATA_PAD)
++		return -EINVAL;
++
++	*f = node->v_fmt;
++
++	return 0;
++}
++
++static int unicam_try_fmt_meta_cap(struct file *file, void *priv,
++				   struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	if (node->pad_id != METADATA_PAD)
++		return -EINVAL;
++
++	*f = node->v_fmt;
++
++	return 0;
++}
++
++static int unicam_s_fmt_meta_cap(struct file *file, void *priv,
++				 struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_mbus_framefmt mbus_fmt = { 0 };
++	const struct unicam_fmt *fmt;
++	int ret;
++
++	if (node->pad_id == IMAGE_PAD)
++		return -EINVAL;
++
++	if (dev->sensor_embedded_data) {
++		fmt = find_format_by_pix(dev, f->fmt.meta.dataformat);
++		if (!fmt) {
++			unicam_err(dev, "unknown format: V4L2 pix 0x%08x\n",
++				   f->fmt.meta.dataformat);
++			return -EINVAL;
++		}
++		mbus_fmt.code = fmt->code;
++		ret = __subdev_set_format(dev, &mbus_fmt, node->pad_id);
++		if (ret) {
++			unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
++				   __func__, ret);
++			return ret;
++		}
++	}
++
++	*f = node->v_fmt;
++
++	unicam_dbg(3, dev, "%s size %d, V4L2 pix 0x%08x\n",
++		   __func__, node->v_fmt.fmt.meta.buffersize,
++		   node->v_fmt.fmt.meta.dataformat);
++
++	return 0;
++}
++
+ static int unicam_queue_setup(struct vb2_queue *vq,
+ 			      unsigned int *nbuffers,
+ 			      unsigned int *nplanes,
+@@ -1022,7 +1221,9 @@ static int unicam_queue_setup(struct vb2
+ {
+ 	struct unicam_node *node = vb2_get_drv_priv(vq);
+ 	struct unicam_device *dev = node->dev;
+-	unsigned int size = node->v_fmt.fmt.pix.sizeimage;
++	unsigned int size = node->pad_id == IMAGE_PAD ?
++				    node->v_fmt.fmt.pix.sizeimage :
++				    node->v_fmt.fmt.meta.buffersize;
+ 
+ 	if (vq->num_buffers + *nbuffers < 3)
+ 		*nbuffers = 3 - vq->num_buffers;
+@@ -1053,7 +1254,8 @@ static int unicam_buffer_prepare(struct
+ 	if (WARN_ON(!node->fmt))
+ 		return -EINVAL;
+ 
+-	size = node->v_fmt.fmt.pix.sizeimage;
++	size = node->pad_id == IMAGE_PAD ? node->v_fmt.fmt.pix.sizeimage :
++					   node->v_fmt.fmt.meta.buffersize;
+ 	if (vb2_plane_size(vb, 0) < size) {
+ 		unicam_err(dev, "data will not fit into plane (%lu < %lu)\n",
+ 			   vb2_plane_size(vb, 0), size);
+@@ -1082,12 +1284,12 @@ static void unicam_set_packing_config(st
+ 	int pack, unpack;
+ 	u32 val;
+ 
+-	if (dev->node[0].v_fmt.fmt.pix.pixelformat ==
+-	    dev->node[0].fmt->fourcc) {
++	if (dev->node[IMAGE_PAD].v_fmt.fmt.pix.pixelformat ==
++	    dev->node[IMAGE_PAD].fmt->fourcc) {
+ 		unpack = UNICAM_PUM_NONE;
+ 		pack = UNICAM_PPM_NONE;
+ 	} else {
+-		switch (dev->node[0].fmt->depth) {
++		switch (dev->node[IMAGE_PAD].fmt->depth) {
+ 		case 8:
+ 			unpack = UNICAM_PUM_UNPACK8;
+ 			break;
+@@ -1125,17 +1327,31 @@ static void unicam_cfg_image_id(struct u
+ 	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+ 		/* CSI2 mode */
+ 		reg_write(cfg, UNICAM_IDI0,
+-			(dev->virtual_channel << 6) | dev->node[0].fmt->csi_dt);
++			  (dev->virtual_channel << 6) |
++					      dev->node[IMAGE_PAD].fmt->csi_dt);
+ 	} else {
+ 		/* CCP2 mode */
+-		reg_write(cfg, UNICAM_IDI0, (0x80 | dev->node[0].fmt->csi_dt));
++		reg_write(cfg, UNICAM_IDI0,
++			  0x80 | dev->node[IMAGE_PAD].fmt->csi_dt);
+ 	}
+ }
+ 
+-static void unicam_start_rx(struct unicam_device *dev, unsigned long addr)
++static void unicam_enable_ed(struct unicam_device *dev)
++{
++	struct unicam_cfg *cfg = &dev->cfg;
++	u32 val = reg_read(cfg, UNICAM_DCS);
++
++	set_field(&val, 2, UNICAM_EDL_MASK);
++	/* Do not wrap at the end of the embedded data buffer */
++	set_field(&val, 0, UNICAM_DBOB);
++
++	reg_write(cfg, UNICAM_DCS, val);
++}
++
++static void unicam_start_rx(struct unicam_device *dev, dma_addr_t *addr)
+ {
+ 	struct unicam_cfg *cfg = &dev->cfg;
+-	int line_int_freq = dev->node[0].v_fmt.fmt.pix.height >> 2;
++	int line_int_freq = dev->node[IMAGE_PAD].v_fmt.fmt.pix.height >> 2;
+ 	unsigned int i;
+ 	u32 val;
+ 
+@@ -1284,27 +1500,31 @@ static void unicam_start_rx(struct unica
+ 	}
+ 
+ 	reg_write(&dev->cfg, UNICAM_IBLS,
+-		  dev->node[0].v_fmt.fmt.pix.bytesperline);
+-	unicam_wr_dma_addr(dev, addr);
++		  dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline);
++	unicam_wr_dma_addr(dev, addr[IMAGE_PAD], IMAGE_PAD);
+ 	unicam_set_packing_config(dev);
+ 	unicam_cfg_image_id(dev);
+ 
+-	/* Disabled embedded data */
+-	val = 0;
+-	set_field(&val, 0, UNICAM_EDL_MASK);
+-	reg_write(cfg, UNICAM_DCS, val);
+-
+ 	val = reg_read(cfg, UNICAM_MISC);
+ 	set_field(&val, 1, UNICAM_FL0);
+ 	set_field(&val, 1, UNICAM_FL1);
+ 	reg_write(cfg, UNICAM_MISC, val);
+ 
++	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data) {
++		unicam_enable_ed(dev);
++		unicam_wr_dma_addr(dev, addr[METADATA_PAD], METADATA_PAD);
++	}
++
+ 	/* Enable peripheral */
+ 	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPE);
+ 
+ 	/* Load image pointers */
+ 	reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_LIP_MASK);
+ 
++	/* Load embedded data buffer pointers if needed */
++	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data)
++		reg_write_field(cfg, UNICAM_DCS, 1, UNICAM_LDP);
++
+ 	/*
+ 	 * Enable trigger only for the first frame to
+ 	 * sync correctly to the FS from the source.
+@@ -1339,6 +1559,9 @@ static void unicam_disable(struct unicam
+ 	/* Disable peripheral */
+ 	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
+ 
++	/* Clear ED setup */
++	reg_write(cfg, UNICAM_DCS, 0);
++
+ 	/* Disable all lane clocks */
+ 	clk_write(cfg, 0);
+ }
+@@ -1347,26 +1570,23 @@ static int unicam_start_streaming(struct
+ {
+ 	struct unicam_node *node = vb2_get_drv_priv(vq);
+ 	struct unicam_device *dev = node->dev;
+-	struct unicam_dmaqueue *dma_q = &node->dma_queue;
+-	struct unicam_buffer *buf, *tmp;
+-	unsigned long addr = 0;
++	struct unicam_buffer *buf;
++	dma_addr_t buffer_addr[MAX_NODES] = { 0 };
++	int num_nodes_streaming;
+ 	unsigned long flags;
+-	int ret;
++	int ret, i;
+ 
+-	spin_lock_irqsave(&node->dma_queue_lock, flags);
+-	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
+-	node->cur_frm = buf;
+-	node->next_frm = buf;
+-	list_del(&buf->list);
+-	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
++	node->streaming = 1;
++	if (!unicam_all_nodes_streaming(dev)) {
++		unicam_dbg(3, dev, "Not all nodes are streaming yet.");
++		return 0;
++	}
+ 
+-	addr = vb2_dma_contig_plane_dma_addr(&node->cur_frm->vb.vb2_buf, 0);
+ 	dev->sequence = 0;
+-
+ 	ret = unicam_runtime_get(dev);
+ 	if (ret < 0) {
+ 		unicam_dbg(3, dev, "unicam_runtime_get failed\n");
+-		goto err_release_buffers;
++		return ret;
+ 	}
+ 
+ 	dev->active_data_lanes = dev->max_data_lanes;
+@@ -1388,7 +1608,7 @@ static int unicam_start_streaming(struct
+ 			dev->active_data_lanes = dev->max_data_lanes;
+ 	}
+ 	if (dev->active_data_lanes > dev->max_data_lanes) {
+-		unicam_err(dev, "Device has requested %u data lanes, which is >%u configured in DT\n",
++		unicam_err(dev,	"Device has requested %u data lanes, which is >%u configured in DT\n",
+ 			   dev->active_data_lanes, dev->max_data_lanes);
+ 		ret = -EINVAL;
+ 		goto err_pm_put;
+@@ -1408,9 +1628,22 @@ static int unicam_start_streaming(struct
+ 		unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
+ 		goto err_pm_put;
+ 	}
+-	dev->streaming = 1;
+ 
+-	unicam_start_rx(dev, addr);
++	num_nodes_streaming = unicam_num_nodes_streaming(dev);
++	for (i = 0; i < num_nodes_streaming; i++) {
++		spin_lock_irqsave(&dev->node[i].dma_queue_lock, flags);
++		buf = list_entry(dev->node[i].dma_queue.active.next,
++				 struct unicam_buffer, list);
++		dev->node[i].cur_frm = buf;
++		dev->node[i].next_frm = buf;
++		list_del(&buf->list);
++		spin_unlock_irqrestore(&dev->node[i].dma_queue_lock, flags);
++		buffer_addr[i] =
++		vb2_dma_contig_plane_dma_addr(&dev->node[i].cur_frm->vb.vb2_buf,
++					      0);
++	}
++
++	unicam_start_rx(dev, buffer_addr);
+ 
+ 	ret = v4l2_subdev_call(dev->sensor, video, s_stream, 1);
+ 	if (ret < 0) {
+@@ -1421,21 +1654,11 @@ static int unicam_start_streaming(struct
+ 	return 0;
+ 
+ err_disable_unicam:
++	node->streaming = 0;
+ 	unicam_disable(dev);
+ 	clk_disable_unprepare(dev->clock);
+ err_pm_put:
+ 	unicam_runtime_put(dev);
+-err_release_buffers:
+-	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
+-		list_del(&buf->list);
+-		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
+-	}
+-	if (node->cur_frm != node->next_frm)
+-		vb2_buffer_done(&node->next_frm->vb.vb2_buf,
+-				VB2_BUF_STATE_QUEUED);
+-	vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
+-	node->next_frm = NULL;
+-	node->cur_frm = NULL;
+ 
+ 	return ret;
+ }
+@@ -1448,33 +1671,47 @@ static void unicam_stop_streaming(struct
+ 	struct unicam_buffer *buf, *tmp;
+ 	unsigned long flags;
+ 
+-	if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
+-		unicam_err(dev, "stream off failed in subdev\n");
++	node->streaming = 0;
+ 
+-	unicam_disable(dev);
++	if (node->pad_id == IMAGE_PAD) {
++		/* Stop streaming the sensor and disable the peripheral.
++		 * We cannot continue streaming embedded data with the
++		 * image pad disabled.
++		 */
++		if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
++			unicam_err(dev, "stream off failed in subdev\n");
+ 
+-	/* Release all active buffers */
++		unicam_disable(dev);
++		clk_disable_unprepare(dev->clock);
++		unicam_runtime_put(dev);
++
++	} else if (node->pad_id == METADATA_PAD) {
++		/* Null out the embedded data buffer address so the HW does
++		 * not use it.  This is only really needed if the embedded data
++		 * pad is disabled before the image pad.  The 0x3 in the top two
++		 * bits signifies uncached accesses through the Videocore
++		 * memory controller.
++		 */
++		unicam_wr_dma_addr(dev, 0xc0000000, METADATA_PAD);
++	}
++
++	/* Clear all queued buffers for the node */
+ 	spin_lock_irqsave(&node->dma_queue_lock, flags);
+ 	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
+ 		list_del(&buf->list);
+ 		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+ 	}
+ 
+-	if (node->cur_frm == node->next_frm) {
+-		vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
+-				VB2_BUF_STATE_ERROR);
+-	} else {
++	if (node->cur_frm)
+ 		vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
+ 				VB2_BUF_STATE_ERROR);
++	if (node->next_frm && node->cur_frm != node->next_frm)
+ 		vb2_buffer_done(&node->next_frm->vb.vb2_buf,
+ 				VB2_BUF_STATE_ERROR);
+-	}
++
+ 	node->cur_frm = NULL;
+ 	node->next_frm = NULL;
+ 	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+-
+-	clk_disable_unprepare(dev->clock);
+-	unicam_runtime_put(dev);
+ }
+ 
+ static int unicam_enum_input(struct file *file, void *priv,
+@@ -1595,17 +1832,23 @@ static int unicam_enum_framesizes(struct
+ 	struct v4l2_subdev_frame_size_enum fse;
+ 	int ret;
+ 
+-	/* check for valid format */
+-	fmt = find_format_by_pix(dev, fsize->pixel_format);
+-	if (!fmt) {
+-		unicam_dbg(3, dev, "Invalid pixel code: %x\n",
+-			   fsize->pixel_format);
+-		return -EINVAL;
++	if (node->pad_id == IMAGE_PAD) {
++		/* check for valid format */
++		fmt = find_format_by_pix(dev, fsize->pixel_format);
++		if (!fmt) {
++			unicam_dbg(3, dev, "Invalid pixel code: %x\n",
++				   fsize->pixel_format);
++			return -EINVAL;
++		}
++		fse.code = fmt->code;
++	} else {
++		/* This pad is for embedded data, so just set the format */
++		fse.code = MEDIA_BUS_FMT_SENSOR_DATA;
+ 	}
+ 
++	fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ 	fse.index = fsize->index;
+-	fse.pad = 0;
+-	fse.code = fmt->code;
++	fse.pad = node->pad_id;
+ 
+ 	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
+ 	if (ret)
+@@ -1782,7 +2025,7 @@ static void unicam_notify(struct v4l2_su
+ 
+ 	switch (notification) {
+ 	case V4L2_DEVICE_NOTIFY_EVENT:
+-		v4l2_event_queue(&dev->node[0].video_dev, arg);
++		v4l2_event_queue(&dev->node[IMAGE_PAD].video_dev, arg);
+ 		break;
+ 	default:
+ 		break;
+@@ -1826,6 +2069,7 @@ static int unicam_open(struct file *file
+ 		goto unlock;
+ 	}
+ 
++	node->open++;
+ 	ret = 0;
+ 
+ unlock:
+@@ -1850,6 +2094,10 @@ static int unicam_release(struct file *f
+ 	if (fh_singular)
+ 		v4l2_subdev_call(sd, core, s_power, 0);
+ 
++	if (node->streaming)
++		unicam_stop_streaming(&node->buffer_queue);
++
++	node->open--;
+ 	mutex_unlock(&node->lock);
+ 
+ 	return ret;
+@@ -1874,6 +2122,11 @@ static const struct v4l2_ioctl_ops unica
+ 	.vidioc_s_fmt_vid_cap		= unicam_s_fmt_vid_cap,
+ 	.vidioc_try_fmt_vid_cap		= unicam_try_fmt_vid_cap,
+ 
++	.vidioc_enum_fmt_meta_cap	= unicam_enum_fmt_meta_cap,
++	.vidioc_g_fmt_meta_cap		= unicam_g_fmt_meta_cap,
++	.vidioc_s_fmt_meta_cap		= unicam_s_fmt_meta_cap,
++	.vidioc_try_fmt_meta_cap	= unicam_try_fmt_meta_cap,
++
+ 	.vidioc_enum_input		= unicam_enum_input,
+ 	.vidioc_g_input			= unicam_g_input,
+ 	.vidioc_s_input			= unicam_s_input,
+@@ -1941,42 +2194,53 @@ static int register_node(struct unicam_d
+ 	const struct unicam_fmt *fmt;
+ 	int ret;
+ 
+-	ret = __subdev_get_format(unicam, &mbus_fmt, pad_id);
+-	if (ret) {
+-		unicam_err(unicam, "Failed to get_format - ret %d\n", ret);
+-		return ret;
+-	}
+-
+-	fmt = find_format_by_code(mbus_fmt.code);
+-	if (!fmt) {
+-		/* Find the first format that the sensor and unicam both
+-		 * support
+-		 */
+-		fmt = get_first_supported_format(unicam);
++	if (unicam->sensor_embedded_data || pad_id != METADATA_PAD) {
++		ret = __subdev_get_format(unicam, &mbus_fmt, pad_id);
++		if (ret) {
++			unicam_err(unicam, "Failed to get_format - ret %d\n",
++				   ret);
++			return ret;
++		}
+ 
+-		if (!fmt)
+-			/* No compatible formats */
+-			return -EINVAL;
++		fmt = find_format_by_code(mbus_fmt.code);
++		if (!fmt) {
++			/* Find the first format that the sensor and unicam both
++			 * support
++			 */
++			fmt = get_first_supported_format(unicam);
+ 
+-		mbus_fmt.code = fmt->code;
+-		ret = __subdev_set_format(unicam, &mbus_fmt);
+-		if (ret)
+-			return -EINVAL;
+-	}
+-	if (mbus_fmt.field != V4L2_FIELD_NONE) {
+-		/* Interlaced not supported - disable it now. */
+-		mbus_fmt.field = V4L2_FIELD_NONE;
+-		ret = __subdev_set_format(unicam, &mbus_fmt);
+-		if (ret)
+-			return -EINVAL;
++			if (!fmt)
++				/* No compatible formats */
++				return -EINVAL;
++
++			mbus_fmt.code = fmt->code;
++			ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
++			if (ret)
++				return -EINVAL;
++		}
++		if (mbus_fmt.field != V4L2_FIELD_NONE) {
++			/* Interlaced not supported - disable it now. */
++			mbus_fmt.field = V4L2_FIELD_NONE;
++			ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
++			if (ret)
++				return -EINVAL;
++		}
++	} else {
++		/* Fix this node format as embedded data. */
++		fmt = find_format_by_code(MEDIA_BUS_FMT_SENSOR_DATA);
+ 	}
+ 
++	node->dev = unicam;
+ 	node->pad_id = pad_id;
+ 	node->fmt = fmt;
+-	if (fmt->fourcc)
+-		node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+-	else
++	if (fmt->fourcc) {
++		if (fmt->fourcc != V4L2_META_FMT_SENSOR_DATA)
++			node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++		else
++			node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
++	} else {
+ 		node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
++	}
+ 
+ 	/* Read current subdev format */
+ 	unicam_reset_format(node);
+@@ -2002,13 +2266,21 @@ static int register_node(struct unicam_d
+ 	spin_lock_init(&node->dma_queue_lock);
+ 	mutex_init(&node->lock);
+ 
+-	if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
++	vdev = &node->video_dev;
++	if (pad_id == IMAGE_PAD) {
+ 		/* Add controls from the subdevice */
+ 		ret = v4l2_ctrl_add_handler(&node->ctrl_handler,
+ 					    unicam->sensor->ctrl_handler, NULL,
+ 					    true);
+ 		if (ret < 0)
+ 			return ret;
++
++		/*
++		 * If the sensor subdevice has any controls, associate the node
++		 *  with the ctrl handler to allow access from userland.
++		 */
++		if (!list_empty(&node->ctrl_handler.ctrls))
++			vdev->ctrl_handler = &node->ctrl_handler;
+ 	}
+ 
+ 	q = &node->buffer_queue;
+@@ -2031,8 +2303,6 @@ static int register_node(struct unicam_d
+ 
+ 	INIT_LIST_HEAD(&node->dma_queue.active);
+ 
+-	vdev = &node->video_dev;
+-	strlcpy(vdev->name, UNICAM_MODULE_NAME, sizeof(vdev->name));
+ 	vdev->release = video_device_release_empty;
+ 	vdev->fops = &unicam_fops;
+ 	vdev->ioctl_ops = &unicam_ioctl_ops;
+@@ -2040,24 +2310,28 @@ static int register_node(struct unicam_d
+ 	vdev->vfl_dir = VFL_DIR_RX;
+ 	vdev->queue = q;
+ 	vdev->lock = &node->lock;
+-	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
+-			    V4L2_CAP_READWRITE;
+-	/* If the source has no controls then remove our ctrl handler. */
+-	if (list_empty(&node->ctrl_handler.ctrls))
+-		unicam->v4l2_dev.ctrl_handler = NULL;
++	vdev->device_caps = (pad_id == IMAGE_PAD) ?
++			    (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING) :
++			    (V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING);
++
++	/* Define the device names */
++	snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME,
++		 node->pad_id == IMAGE_PAD ? "image" : "embedded");
+ 
+-	node->dev = unicam;
+ 	video_set_drvdata(vdev, node);
+ 	vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
+ 
+-	if (!v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_STD);
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUMSTD);
+ 	}
+-	if (!v4l2_subdev_has_op(unicam->sensor, video, querystd))
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, querystd))
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
+-	if (!v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_EDID);
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_EDID);
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_DV_TIMINGS_CAP);
+@@ -2066,15 +2340,19 @@ static int register_node(struct unicam_d
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_DV_TIMINGS);
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERY_DV_TIMINGS);
+ 	}
+-	if (!v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
+ 		v4l2_disable_ioctl(&node->video_dev,
+ 				   VIDIOC_ENUM_FRAMEINTERVALS);
+-	if (!v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
+-	if (!v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
+ 
+-	if (!v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_FRAMESIZES);
+ 
+ 	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+@@ -2082,27 +2360,29 @@ static int register_node(struct unicam_d
+ 		unicam_err(unicam, "Unable to register video device.\n");
+ 		return ret;
+ 	}
+-	node->registered = true;
++	node->registered = 1;
+ 
+-	ret = media_create_pad_link(&unicam->sensor->entity,
+-				    0, &node->video_dev.entity, 0,
+-				    MEDIA_LNK_FL_ENABLED |
+-				    MEDIA_LNK_FL_IMMUTABLE);
+-	if (ret)
+-		unicam_err(unicam, "Unable to create pad links.\n");
++	if (unicam->sensor_embedded_data) {
++		ret = media_create_pad_link(&unicam->sensor->entity, pad_id,
++					    &node->video_dev.entity, 0,
++					    MEDIA_LNK_FL_ENABLED |
++					    MEDIA_LNK_FL_IMMUTABLE);
++		if (ret)
++			unicam_err(unicam, "Unable to create pad links.\n");
++	}
+ 
+ 	return ret;
+ }
+ 
+ static void unregister_nodes(struct unicam_device *unicam)
+ {
+-	if (unicam->node[0].registered) {
+-		video_unregister_device(&unicam->node[0].video_dev);
+-		unicam->node[0].registered = false;
+-	}
+-	if (unicam->node[1].registered) {
+-		video_unregister_device(&unicam->node[1].video_dev);
+-		unicam->node[1].registered = false;
++	if (unicam->node[IMAGE_PAD].registered) {
++		video_unregister_device(&unicam->node[IMAGE_PAD].video_dev);
++		unicam->node[IMAGE_PAD].registered = 0;
++	}
++	if (unicam->node[METADATA_PAD].registered) {
++		video_unregister_device(&unicam->node[METADATA_PAD].video_dev);
++		unicam->node[METADATA_PAD].registered = 0;
+ 	}
+ }
+ 
+@@ -2118,20 +2398,20 @@ static int unicam_probe_complete(struct
+ 	if (!unicam->sensor_config)
+ 		return -ENOMEM;
+ 
+-	ret = register_node(unicam, &unicam->node[0],
+-			    V4L2_BUF_TYPE_VIDEO_CAPTURE, 0);
++	unicam->sensor_embedded_data = (unicam->sensor->entity.num_pads >= 2);
++
++	ret = register_node(unicam, &unicam->node[IMAGE_PAD],
++			    V4L2_BUF_TYPE_VIDEO_CAPTURE, IMAGE_PAD);
+ 	if (ret) {
+ 		unicam_err(unicam, "Unable to register subdev node 0.\n");
+ 		goto unregister;
+ 	}
+-	if (unicam->sensor->entity.num_pads >= 2) {
+-		ret = register_node(unicam, &unicam->node[1],
+-				    V4L2_BUF_TYPE_META_CAPTURE, 1);
+-		if (ret) {
+-			unicam_err(unicam,
+-				   "Unable to register subdev node 1.\n");
+-			goto unregister;
+-		}
++
++	ret = register_node(unicam, &unicam->node[METADATA_PAD],
++			    V4L2_BUF_TYPE_META_CAPTURE, METADATA_PAD);
++	if (ret) {
++		unicam_err(unicam, "Unable to register subdev node 1.\n");
++		goto unregister;
+ 	}
+ 
+ 	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
+@@ -2355,8 +2635,10 @@ static int unicam_probe(struct platform_
+ 		 pdev->dev.driver->name, dev_name(&pdev->dev));
+ 	unicam->mdev.hw_revision = 1;
+ 
+-	media_entity_pads_init(&unicam->node[0].video_dev.entity, 1,
+-			       &unicam->node[0].pad);
++	media_entity_pads_init(&unicam->node[IMAGE_PAD].video_dev.entity, 1,
++			       &unicam->node[IMAGE_PAD].pad);
++	media_entity_pads_init(&unicam->node[METADATA_PAD].video_dev.entity, 1,
++			       &unicam->node[METADATA_PAD].pad);
+ 	media_device_init(&unicam->mdev);
+ 
+ 	unicam->v4l2_dev.mdev = &unicam->mdev;
+@@ -2376,11 +2658,10 @@ static int unicam_probe(struct platform_
+ 	}
+ 
+ 	/* Reserve space for the controls */
+-	hdl = &unicam->node[0].ctrl_handler;
++	hdl = &unicam->node[IMAGE_PAD].ctrl_handler;
+ 	ret = v4l2_ctrl_handler_init(hdl, 16);
+ 	if (ret < 0)
+ 		goto media_unregister;
+-	unicam->v4l2_dev.ctrl_handler = hdl;
+ 
+ 	/* set the driver data in platform device */
+ 	platform_set_drvdata(pdev, unicam);
+@@ -2417,7 +2698,7 @@ static int unicam_remove(struct platform
+ 	pm_runtime_disable(&pdev->dev);
+ 
+ 	v4l2_async_notifier_unregister(&unicam->notifier);
+-	v4l2_ctrl_handler_free(&unicam->node[0].ctrl_handler);
++	v4l2_ctrl_handler_free(&unicam->node[IMAGE_PAD].ctrl_handler);
+ 	v4l2_device_unregister(&unicam->v4l2_dev);
+ 	unregister_nodes(unicam);
+ 	if (unicam->sensor_config)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0215-media-bcm2835-unicam-Use-dummy-buffer-if-none-have-b.patch b/target/linux/bcm27xx/patches-5.15/950-0215-media-bcm2835-unicam-Use-dummy-buffer-if-none-have-b.patch
new file mode 100644
index 0000000000..f25d63d696
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0215-media-bcm2835-unicam-Use-dummy-buffer-if-none-have-b.patch
@@ -0,0 +1,308 @@
+From f84e5dc673c401f4ac3d9b7423bf611a88a7b0c0 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 2 Apr 2020 16:08:51 +0100
+Subject: [PATCH] media: bcm2835-unicam: Use dummy buffer if none have
+ been queued
+
+If no buffer has been queued by a userland application, we use an
+internal dummy buffer for the hardware to spin in. This will allow
+the driver to release the existing userland buffer back to the
+application for processing.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 160 ++++++++++++------
+ 1 file changed, 110 insertions(+), 50 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -47,6 +47,7 @@
+ #include <linux/clk.h>
+ #include <linux/delay.h>
+ #include <linux/device.h>
++#include <linux/dma-mapping.h>
+ #include <linux/err.h>
+ #include <linux/init.h>
+ #include <linux/interrupt.h>
+@@ -112,6 +113,12 @@ MODULE_PARM_DESC(debug, "Debug level 0-3
+ /* Default size of the embedded buffer */
+ #define UNICAM_EMBEDDED_SIZE	8192
+ 
++/*
++ * Size of the dummy buffer. Can be any size really, but the DMA
++ * allocation works in units of page sizes.
++ */
++#define DUMMY_BUF_SIZE	(PAGE_SIZE)
++
+ enum pad_types {
+ 	IMAGE_PAD,
+ 	METADATA_PAD,
+@@ -390,6 +397,12 @@ struct unicam_node {
+ 	struct media_pad pad;
+ 	struct v4l2_ctrl_handler ctrl_handler;
+ 	unsigned int embedded_lines;
++	/*
++	 * Dummy buffer intended to be used by unicam
++	 * if we have no other queued buffers to swap to.
++	 */
++	void *dummy_buf_cpu_addr;
++	dma_addr_t dummy_buf_dma_addr;
+ };
+ 
+ struct unicam_device {
+@@ -661,27 +674,24 @@ static int unicam_reset_format(struct un
+ 	return 0;
+ }
+ 
+-static void unicam_wr_dma_addr(struct unicam_device *dev, dma_addr_t dmaaddr,
+-			       int pad_id)
++static void unicam_wr_dma_addr(struct unicam_cfg *cfg, dma_addr_t dmaaddr,
++			       unsigned int buffer_size, int pad_id)
+ {
+-	dma_addr_t endaddr;
++	dma_addr_t endaddr = dmaaddr + buffer_size;
+ 
+ 	/*
+-	 * dmaaddr should be a 32-bit address with the top two bits set to 0x3
+-	 * to signify uncached access through the Videocore memory controller.
++	 * dmaaddr and endaddr should be a 32-bit address with the top two bits
++	 * set to 0x3 to signify uncached access through the Videocore memory
++	 * controller.
+ 	 */
+-	BUG_ON((dmaaddr >> 30) != 0x3);
++	BUG_ON((dmaaddr >> 30) != 0x3 && (endaddr >> 30) != 0x3);
+ 
+ 	if (pad_id == IMAGE_PAD) {
+-		endaddr = dmaaddr +
+-			  dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage;
+-		reg_write(&dev->cfg, UNICAM_IBSA0, dmaaddr);
+-		reg_write(&dev->cfg, UNICAM_IBEA0, endaddr);
++		reg_write(cfg, UNICAM_IBSA0, dmaaddr);
++		reg_write(cfg, UNICAM_IBEA0, endaddr);
+ 	} else {
+-		endaddr = dmaaddr +
+-			  dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
+-		reg_write(&dev->cfg, UNICAM_DBSA0, dmaaddr);
+-		reg_write(&dev->cfg, UNICAM_DBEA0, endaddr);
++		reg_write(cfg, UNICAM_DBSA0, dmaaddr);
++		reg_write(cfg, UNICAM_DBEA0, endaddr);
+ 	}
+ }
+ 
+@@ -704,6 +714,7 @@ static inline void unicam_schedule_next_
+ 	struct unicam_device *dev = node->dev;
+ 	struct unicam_dmaqueue *dma_q = &node->dma_queue;
+ 	struct unicam_buffer *buf;
++	unsigned int size;
+ 	dma_addr_t addr;
+ 
+ 	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
+@@ -711,7 +722,23 @@ static inline void unicam_schedule_next_
+ 	list_del(&buf->list);
+ 
+ 	addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
+-	unicam_wr_dma_addr(dev, addr, node->pad_id);
++	size = (node->pad_id == IMAGE_PAD) ?
++			dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage :
++			dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
++
++	unicam_wr_dma_addr(&dev->cfg, addr, size, node->pad_id);
++}
++
++static inline void unicam_schedule_dummy_buffer(struct unicam_node *node)
++{
++	struct unicam_device *dev = node->dev;
++	dma_addr_t addr = node->dummy_buf_dma_addr;
++
++	unicam_dbg(3, dev, "Scheduling dummy buffer for node %d\n",
++		   node->pad_id);
++
++	unicam_wr_dma_addr(&dev->cfg, addr, DUMMY_BUF_SIZE, node->pad_id);
++	node->next_frm = NULL;
+ }
+ 
+ static inline void unicam_process_buffer_complete(struct unicam_node *node,
+@@ -721,7 +748,6 @@ static inline void unicam_process_buffer
+ 	node->cur_frm->vb.sequence = sequence;
+ 
+ 	vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
+-	node->cur_frm = node->next_frm;
+ }
+ 
+ static int unicam_num_nodes_streaming(struct unicam_device *dev)
+@@ -788,6 +814,28 @@ static irqreturn_t unicam_isr(int irq, v
+ 	if (!(sta && (UNICAM_IS | UNICAM_PI0)))
+ 		return IRQ_HANDLED;
+ 
++	/*
++	 * We must run the frame end handler first. If we have a valid next_frm
++	 * and we get a simultaneout FE + FS interrupt, running the FS handler
++	 * first would null out the next_frm ptr and we would have lost the
++	 * buffer forever.
++	 */
++	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
++		/*
++		 * Ensure we have swapped buffers already as we can't
++		 * stop the peripheral. If no buffer is available, use a
++		 * dummy buffer to dump out frames until we get a new buffer
++		 * to use.
++		 */
++		for (i = 0; i < num_nodes_streaming; i++) {
++			if (unicam->node[i].cur_frm)
++				unicam_process_buffer_complete(&unicam->node[i],
++							       sequence);
++			unicam->node[i].cur_frm = unicam->node[i].next_frm;
++		}
++		unicam->sequence++;
++	}
++
+ 	if (ista & UNICAM_FSI) {
+ 		/*
+ 		 * Timestamp is to be when the first data byte was captured,
+@@ -798,24 +846,16 @@ static irqreturn_t unicam_isr(int irq, v
+ 			if (unicam->node[i].cur_frm)
+ 				unicam->node[i].cur_frm->vb.vb2_buf.timestamp =
+ 								ts;
++			/*
++			 * Set the next frame output to go to a dummy frame
++			 * if we have not managed to obtain another frame
++			 * from the queue.
++			 */
++			unicam_schedule_dummy_buffer(&unicam->node[i]);
+ 		}
+ 	}
+-	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
+-		/*
+-		 * Ensure we have swapped buffers already as we can't
+-		 * stop the peripheral. Overwrite the frame we've just
+-		 * captured instead.
+-		 */
+-		for (i = 0; i < num_nodes_streaming; i++) {
+-			if (unicam->node[i].cur_frm &&
+-			    unicam->node[i].cur_frm != unicam->node[i].next_frm)
+-				unicam_process_buffer_complete(&unicam->node[i],
+-							       sequence);
+-		}
+-		unicam->sequence++;
+-	}
+-
+-	/* Cannot swap buffer at frame end, there may be a race condition
++	/*
++	 * Cannot swap buffer at frame end, there may be a race condition
+ 	 * where the HW does not actually swap it if the new frame has
+ 	 * already started.
+ 	 */
+@@ -823,7 +863,7 @@ static irqreturn_t unicam_isr(int irq, v
+ 		for (i = 0; i < num_nodes_streaming; i++) {
+ 			spin_lock(&unicam->node[i].dma_queue_lock);
+ 			if (!list_empty(&unicam->node[i].dma_queue.active) &&
+-			    unicam->node[i].cur_frm == unicam->node[i].next_frm)
++			    !unicam->node[i].next_frm)
+ 				unicam_schedule_next_buffer(&unicam->node[i]);
+ 			spin_unlock(&unicam->node[i].dma_queue_lock);
+ 		}
+@@ -1352,7 +1392,7 @@ static void unicam_start_rx(struct unica
+ {
+ 	struct unicam_cfg *cfg = &dev->cfg;
+ 	int line_int_freq = dev->node[IMAGE_PAD].v_fmt.fmt.pix.height >> 2;
+-	unsigned int i;
++	unsigned int size, i;
+ 	u32 val;
+ 
+ 	if (line_int_freq < 128)
+@@ -1413,7 +1453,7 @@ static void unicam_start_rx(struct unica
+ 	reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_DDL);
+ 
+ 	/* Always start in trigger frame capture mode (UNICAM_FCM set) */
+-	val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM;
++	val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM | UNICAM_IBOB;
+ 	set_field(&val,  line_int_freq, UNICAM_LCIE_MASK);
+ 	reg_write(cfg, UNICAM_ICTL, val);
+ 	reg_write(cfg, UNICAM_STA, UNICAM_STA_MASK_ALL);
+@@ -1501,7 +1541,8 @@ static void unicam_start_rx(struct unica
+ 
+ 	reg_write(&dev->cfg, UNICAM_IBLS,
+ 		  dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline);
+-	unicam_wr_dma_addr(dev, addr[IMAGE_PAD], IMAGE_PAD);
++	size = dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage;
++	unicam_wr_dma_addr(&dev->cfg, addr[IMAGE_PAD], size, IMAGE_PAD);
+ 	unicam_set_packing_config(dev);
+ 	unicam_cfg_image_id(dev);
+ 
+@@ -1511,8 +1552,10 @@ static void unicam_start_rx(struct unica
+ 	reg_write(cfg, UNICAM_MISC, val);
+ 
+ 	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data) {
++		size = dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
+ 		unicam_enable_ed(dev);
+-		unicam_wr_dma_addr(dev, addr[METADATA_PAD], METADATA_PAD);
++		unicam_wr_dma_addr(&dev->cfg, addr[METADATA_PAD], size,
++				   METADATA_PAD);
+ 	}
+ 
+ 	/* Enable peripheral */
+@@ -1686,13 +1729,14 @@ static void unicam_stop_streaming(struct
+ 		unicam_runtime_put(dev);
+ 
+ 	} else if (node->pad_id == METADATA_PAD) {
+-		/* Null out the embedded data buffer address so the HW does
+-		 * not use it.  This is only really needed if the embedded data
+-		 * pad is disabled before the image pad.  The 0x3 in the top two
+-		 * bits signifies uncached accesses through the Videocore
+-		 * memory controller.
++		/* Allow the hardware to spin in the dummy buffer.
++		 * This is only really needed if the embedded data pad is
++		 * disabled before the image pad.  The 0x3 in the top two bits
++		 * signifies uncached accesses through the Videocore memory
++		 * controller.
+ 		 */
+-		unicam_wr_dma_addr(dev, 0xc0000000, METADATA_PAD);
++		unicam_wr_dma_addr(&dev->cfg, node->dummy_buf_dma_addr,
++				   DUMMY_BUF_SIZE, METADATA_PAD);
+ 	}
+ 
+ 	/* Clear all queued buffers for the node */
+@@ -2321,6 +2365,15 @@ static int register_node(struct unicam_d
+ 	video_set_drvdata(vdev, node);
+ 	vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
+ 
++	node->dummy_buf_cpu_addr = dma_alloc_coherent(&unicam->pdev->dev,
++						      DUMMY_BUF_SIZE,
++						      &node->dummy_buf_dma_addr,
++						      GFP_ATOMIC);
++	if (!node->dummy_buf_cpu_addr) {
++		unicam_err(unicam, "Unable to allocate dummy buffer.\n");
++		return -ENOMEM;
++	}
++
+ 	if (node->pad_id == METADATA_PAD ||
+ 	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
+@@ -2376,13 +2429,20 @@ static int register_node(struct unicam_d
+ 
+ static void unregister_nodes(struct unicam_device *unicam)
+ {
+-	if (unicam->node[IMAGE_PAD].registered) {
+-		video_unregister_device(&unicam->node[IMAGE_PAD].video_dev);
+-		unicam->node[IMAGE_PAD].registered = 0;
+-	}
+-	if (unicam->node[METADATA_PAD].registered) {
+-		video_unregister_device(&unicam->node[METADATA_PAD].video_dev);
+-		unicam->node[METADATA_PAD].registered = 0;
++	struct unicam_node *node;
++	int i;
++
++	for (i = 0; i < MAX_NODES; i++) {
++		node = &unicam->node[i];
++		if (node->dummy_buf_cpu_addr) {
++			dma_free_coherent(&unicam->pdev->dev, DUMMY_BUF_SIZE,
++					  node->dummy_buf_cpu_addr,
++					  node->dummy_buf_dma_addr);
++		}
++		if (node->registered) {
++			video_unregister_device(&node->video_dev);
++			node->registered = 0;
++		}
+ 	}
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0216-media-bcm2835-unicam-Disable-event-related-ioctls-on.patch b/target/linux/bcm27xx/patches-5.15/950-0216-media-bcm2835-unicam-Disable-event-related-ioctls-on.patch
new file mode 100644
index 0000000000..0015da5dbe
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0216-media-bcm2835-unicam-Disable-event-related-ioctls-on.patch
@@ -0,0 +1,31 @@
+From e60e756a1354d248a01b4e1cd231c0ceb9d97a20 Mon Sep 17 00:00:00 2001
+From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Date: Tue, 24 Mar 2020 23:13:02 +0200
+Subject: [PATCH] media: bcm2835-unicam: Disable event-related ioctls
+ on metadata node
+
+The unicam driver supports both the SOURCE_CHANGE and CTRL events. Both
+events are only generated on the image video node, so the event-related
+ioctls are useless on the medatada node. Disable them.
+
+Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
+Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2374,6 +2374,11 @@ static int register_node(struct unicam_d
+ 		return -ENOMEM;
+ 	}
+ 
++	if (node->pad_id == METADATA_PAD) {
++		v4l2_disable_ioctl(vdev, VIDIOC_DQEVENT);
++		v4l2_disable_ioctl(vdev, VIDIOC_SUBSCRIBE_EVENT);
++		v4l2_disable_ioctl(vdev, VIDIOC_UNSUBSCRIBE_EVENT);
++	}
+ 	if (node->pad_id == METADATA_PAD ||
+ 	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0217-media-bcm2835-unicam-Add-support-for-the-FRAME_SYNC-.patch b/target/linux/bcm27xx/patches-5.15/950-0217-media-bcm2835-unicam-Add-support-for-the-FRAME_SYNC-.patch
new file mode 100644
index 0000000000..7195ab179e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0217-media-bcm2835-unicam-Add-support-for-the-FRAME_SYNC-.patch
@@ -0,0 +1,55 @@
+From 507598bd205c63215a636e80acb95772f65a712e Mon Sep 17 00:00:00 2001
+From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Date: Tue, 24 Mar 2020 23:13:02 +0200
+Subject: [PATCH] media: bcm2835-unicam: Add support for the FRAME_SYNC
+ event
+
+The FRAME_SYNC event is useful for userspace image processing algorithms
+to program the camera sensor as early as possible after frame start.
+Support it.
+
+Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
+Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
+Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -772,6 +772,16 @@ static int unicam_all_nodes_disabled(str
+ 	       !dev->node[METADATA_PAD].streaming;
+ }
+ 
++static void unicam_queue_event_sof(struct unicam_device *unicam)
++{
++	struct v4l2_event event = {
++		.type = V4L2_EVENT_FRAME_SYNC,
++		.u.frame_sync.frame_sequence = unicam->sequence,
++	};
++
++	v4l2_event_queue(&unicam->node[IMAGE_PAD].video_dev, &event);
++}
++
+ /*
+  * unicam_isr : ISR handler for unicam capture
+  * @irq: irq number
+@@ -853,6 +863,8 @@ static irqreturn_t unicam_isr(int irq, v
+ 			 */
+ 			unicam_schedule_dummy_buffer(&unicam->node[i]);
+ 		}
++
++		unicam_queue_event_sof(unicam);
+ 	}
+ 	/*
+ 	 * Cannot swap buffer at frame end, there may be a race condition
+@@ -2022,6 +2034,8 @@ static int unicam_subscribe_event(struct
+ 				  const struct v4l2_event_subscription *sub)
+ {
+ 	switch (sub->type) {
++	case V4L2_EVENT_FRAME_SYNC:
++		return v4l2_event_subscribe(fh, sub, 2, NULL);
+ 	case V4L2_EVENT_SOURCE_CHANGE:
+ 		return v4l2_event_subscribe(fh, sub, 4, NULL);
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0218-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch b/target/linux/bcm27xx/patches-5.15/950-0218-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch
new file mode 100644
index 0000000000..9e5e8e974b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0218-media-bcm2835-unicam-Re-fetch-mbus-code-from-subdev-.patch
@@ -0,0 +1,49 @@
+From 15af88c051fb4807a5e8bb265288de52a650aea7 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 21 Apr 2020 16:26:03 +0100
+Subject: [PATCH] media: bcm2835-unicam: Re-fetch mbus code from subdev
+ on a g_fmt call
+
+The sensor subdevice may change the Bayer order if a H/V flip is
+requested after a s_fmt call.  Unicam g_fmt must call the subdev get_fmt
+in case this has happened and return out the correct format 4cc.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 21 ++++++++++++++++++-
+ 1 file changed, 20 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -967,11 +967,30 @@ static int unicam_enum_fmt_vid_cap(struc
+ static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
+ 				struct v4l2_format *f)
+ {
++	struct v4l2_mbus_framefmt mbus_fmt = {0};
+ 	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt = NULL;
++	int ret;
+ 
+-	if (node->pad_id == METADATA_PAD)
++	if (node->pad_id != IMAGE_PAD)
+ 		return -EINVAL;
+ 
++	/*
++	 * If a flip has occurred in the sensor, the fmt code might have
++	 * changed. So we will need to re-fetch the format from the subdevice.
++	 */
++	ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
++	if (ret)
++		return -EINVAL;
++
++	/* Find the V4L2 format from mbus code. We must match a known format. */
++	fmt = find_format_by_code(mbus_fmt.code);
++	if (!fmt)
++		return -EINVAL;
++
++	node->fmt = fmt;
++	node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+ 	*f = node->v_fmt;
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0219-media-uapi-v4l2-core-Add-ISP-statistics-output-V4L2-.patch b/target/linux/bcm27xx/patches-5.15/950-0219-media-uapi-v4l2-core-Add-ISP-statistics-output-V4L2-.patch
new file mode 100644
index 0000000000..7f40f39206
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0219-media-uapi-v4l2-core-Add-ISP-statistics-output-V4L2-.patch
@@ -0,0 +1,94 @@
+From 6b4ccbece097b456c2fb910d7e74ac5e848dc699 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 23 Apr 2020 10:20:26 +0100
+Subject: [PATCH] media: uapi: v4l2-core: Add ISP statistics output
+ V4L2 fourcc type
+
+Add V4L2_META_FMT_BCM2835_ISP_STATS V4L2 format type.
+
+This new format will be used by the BCM2835 ISP device to return
+out ISP statistics for 3A.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../userspace-api/media/v4l/meta-formats.rst  |  1 +
+ .../v4l/pixfmt-meta-bcm2835-isp-stats.rst     | 41 +++++++++++++++++++
+ drivers/media/v4l2-core/v4l2-ioctl.c          |  1 +
+ include/uapi/linux/videodev2.h                |  1 +
+ 4 files changed, 44 insertions(+)
+ create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-bcm2835-isp-stats.rst
+
+--- a/Documentation/userspace-api/media/v4l/meta-formats.rst
++++ b/Documentation/userspace-api/media/v4l/meta-formats.rst
+@@ -12,6 +12,7 @@ These formats are used for the :ref:`met
+ .. toctree::
+     :maxdepth: 1
+ 
++    pixfmt-meta-bcm2835-isp-stats
+     pixfmt-meta-d4xx
+     pixfmt-meta-intel-ipu3
+     pixfmt-meta-rkisp1
+--- /dev/null
++++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-bcm2835-isp-stats.rst
+@@ -0,0 +1,41 @@
++.. Permission is granted to copy, distribute and/or modify this
++.. document under the terms of the GNU Free Documentation License,
++.. Version 1.1 or any later version published by the Free Software
++.. Foundation, with no Invariant Sections, no Front-Cover Texts
++.. and no Back-Cover Texts. A copy of the license is included at
++.. Documentation/media/uapi/fdl-appendix.rst.
++..
++.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
++
++.. _v4l2-meta-fmt-bcm2835-isp-stats:
++
++*****************************************
++V4L2_META_FMT_BCM2835_ISP_STATS  ('BSTA')
++*****************************************
++
++BCM2835 ISP Statistics
++
++Description
++===========
++
++The BCM2835 ISP hardware calculate image statistics for an input Bayer frame.
++These statistics are obtained from the "bcm2835-isp0-capture3" device node
++using the :c:type:`v4l2_meta_format` interface. They are formatted as described
++by the :c:type:`bcm2835_isp_stats` structure below.
++
++.. code-block:: c
++
++	#define DEFAULT_AWB_REGIONS_X 16
++	#define DEFAULT_AWB_REGIONS_Y 12
++
++	#define NUM_HISTOGRAMS 2
++	#define NUM_HISTOGRAM_BINS 128
++	#define AWB_REGIONS (DEFAULT_AWB_REGIONS_X * DEFAULT_AWB_REGIONS_Y)
++	#define FLOATING_REGIONS 16
++	#define AGC_REGIONS 16
++	#define FOCUS_REGIONS 12
++
++.. kernel-doc:: include/uapi/linux/bcm2835-isp.h
++   :functions: bcm2835_isp_stats_hist bcm2835_isp_stats_region
++	             bcm2835_isp_stats_focus bcm2835_isp_stats
++
+--- a/drivers/media/v4l2-core/v4l2-ioctl.c
++++ b/drivers/media/v4l2-core/v4l2-ioctl.c
+@@ -1390,6 +1390,7 @@ static void v4l_fill_fmtdesc(struct v4l2
+ 	case V4L2_META_FMT_RK_ISP1_PARAMS:	descr = "Rockchip ISP1 3A Parameters"; break;
+ 	case V4L2_META_FMT_RK_ISP1_STAT_3A:	descr = "Rockchip ISP1 3A Statistics"; break;
+ 	case V4L2_META_FMT_SENSOR_DATA:	descr = "Sensor Ancillary Metadata"; break;
++	case V4L2_META_FMT_BCM2835_ISP_STATS: descr = "BCM2835 ISP Image Statistics"; break;
+ 
+ 	default:
+ 		/* Compressed formats */
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -776,6 +776,7 @@ struct v4l2_pix_format {
+ #define V4L2_META_FMT_D4XX        v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */
+ #define V4L2_META_FMT_VIVID	  v4l2_fourcc('V', 'I', 'V', 'D') /* Vivid Metadata */
+ #define V4L2_META_FMT_SENSOR_DATA v4l2_fourcc('S', 'E', 'N', 'S') /* Sensor Ancillary metadata */
++#define V4L2_META_FMT_BCM2835_ISP_STATS v4l2_fourcc('B', 'S', 'T', 'A') /* BCM2835 ISP image statistics output */
+ 
+ /* Vendor specific - used for RK_ISP1 camera sub-system */
+ #define V4L2_META_FMT_RK_ISP1_PARAMS	v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 3A Parameters */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0220-media-uapi-v4l-ctrls-Add-CID-base-for-the-bcm2835-is.patch b/target/linux/bcm27xx/patches-5.15/950-0220-media-uapi-v4l-ctrls-Add-CID-base-for-the-bcm2835-is.patch
new file mode 100644
index 0000000000..6caaa14f08
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0220-media-uapi-v4l-ctrls-Add-CID-base-for-the-bcm2835-is.patch
@@ -0,0 +1,169 @@
+From 4811914a840943a821dd362a9124aea62d228732 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 21 Apr 2020 15:06:19 +0100
+Subject: [PATCH] media: uapi: v4l-ctrls: Add CID base for the
+ bcm2835-isp driver
+
+We are reserving controls for the new bcm2835-isp driver.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../admin-guide/media/bcm2835-isp.rst         | 127 ++++++++++++++++++
+ .../userspace-api/media/drivers/index.rst     |   1 +
+ include/uapi/linux/v4l2-controls.h            |   4 +
+ 3 files changed, 132 insertions(+)
+ create mode 100644 Documentation/admin-guide/media/bcm2835-isp.rst
+
+--- /dev/null
++++ b/Documentation/admin-guide/media/bcm2835-isp.rst
+@@ -0,0 +1,127 @@
++.. SPDX-License-Identifier: GPL-2.0
++
++BCM2835 ISP Driver
++==================
++
++Introduction
++------------
++
++The BCM2835 Image Sensor Pipeline (ISP) is a fixed function hardware pipeline
++for performing image processing operations.  Images are fed to the input
++of the ISP through memory frame buffers.  These images may be in various YUV,
++RGB, or Bayer formats.  A typical use case would have Bayer images obtained from
++an image sensor by the BCM2835 Unicam peripheral, written to a memory
++frame buffer, and finally fed into the input of the ISP.  Two concurrent output
++images may be generated in YUV or RGB format at different resolutions.
++Statistics output is also generated for Bayer input images.
++
++The bcm2835-isp driver exposes the following media pads as V4L2 device nodes:
++
++.. tabularcolumns:: |l|l|l|l|
++
++.. cssclass: longtable
++
++.. flat-table::
++
++    * - *Pad*
++      - *Direction*
++      - *Purpose*
++      - *Formats*
++
++    * - "bcm2835-isp0-output0"
++      - sink
++      - Accepts Bayer, RGB or YUV format frame buffers as input to the ISP HW
++        pipeline.
++      - :ref:`RAW8 <V4L2-PIX-FMT-SRGGB8>`,
++        :ref:`RAW10P <V4L2-PIX-FMT-SRGGB10P>`,
++        :ref:`RAW12P <V4L2-PIX-FMT-SRGGB12P>`,
++        :ref:`RAW14P <V4L2-PIX-FMT-SRGGB14P>`,
++        :ref:`RAW16 <V4L2-PIX-FMT-SRGGB16>`,
++        :ref:`RGB24/BGR24 <V4L2-PIX-FMT-RGB24>`,
++        :ref:`YUYV <V4L2-PIX-FMT-YUYV>`,
++        :ref:`YVYU <V4L2-PIX-FMT-YVYU>`,
++        :ref:`UYVY <V4L2-PIX-FMT-UYVY>`,
++        :ref:`VYUY <V4L2-PIX-FMT-VYUY>`,
++        :ref:`YUV420/YVU420 <V4L2-PIX-FMT-YUV420>`
++
++    * - "bcm2835-isp0-capture1"
++      - source
++      - High resolution YUV or RGB processed output from the ISP.
++      - :ref:`RGB565 <V4L2-PIX-FMT-RGB565>`,
++        :ref:`RGB24/BGR24 <V4L2-PIX-FMT-RGB24>`,
++        :ref:`ABGR32 <V4L2-PIX-FMT-ABGR32>`,
++        :ref:`YUYV <V4L2-PIX-FMT-YUYV>`,
++        :ref:`YVYU <V4L2-PIX-FMT-YVYU>`,
++        :ref:`UYVY <V4L2-PIX-FMT-UYVY>`,
++        :ref:`VYUY <V4L2-PIX-FMT-VYUY>`.
++        :ref:`YUV420/YVU420 <V4L2-PIX-FMT-YUV420>`,
++        :ref:`NV12/NV21 <V4L2-PIX-FMT-NV12>`,
++
++    * - "bcm2835-isp0-capture2"
++      - source
++      - Low resolution YUV processed output from the ISP. The output of
++        this pad cannot have a resolution larger than the "bcm2835-isp0-capture1" pad in any dimension.
++      - :ref:`YUYV <V4L2-PIX-FMT-YUYV>`,
++        :ref:`YVYU <V4L2-PIX-FMT-YVYU>`,
++        :ref:`UYVY <V4L2-PIX-FMT-UYVY>`,
++        :ref:`VYUY <V4L2-PIX-FMT-VYUY>`.
++        :ref:`YUV420/YVU420 <V4L2-PIX-FMT-YUV420>`,
++        :ref:`NV12/NV21 <V4L2-PIX-FMT-NV12>`,
++
++    * - "bcm2835-isp0-capture1"
++      - source
++      - Image statistics calculated from the input image provided on the
++        "bcm2835-isp0-output0" pad.  Statistics are only available for Bayer
++        format input images.
++      - :ref:`v4l2-meta-fmt-bcm2835-isp-stats`.
++
++Pipeline Configuration
++----------------------
++
++The ISP pipeline can be configure through user-space by calling
++:ref:`VIDIOC_S_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` on the “bcm2835-isp0-output0”
++node with the appropriate parameters as shown in the table below.
++
++.. tabularcolumns:: |p{2cm}|p{5.0cm}|
++
++.. cssclass: longtable
++
++.. flat-table::
++
++    * - *id*
++      - *Parameter*
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_CC_MATRIX``
++      - struct :c:type:`bcm2835_isp_custom_ccm`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_LENS_SHADING``
++      - struct :c:type:`bcm2835_isp_lens_shading`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL``
++      - struct :c:type:`bcm2835_isp_black_level`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_GEQ``
++      - struct :c:type:`bcm2835_isp_geq`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_GAMMA``
++      - struct :c:type:`bcm2835_isp_gamma`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_DENOISE``
++      - struct :c:type:`bcm2835_isp_denoise`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_SHARPEN``
++      - struct :c:type:`bcm2835_isp_sharpen`
++
++    * - ``V4L2_CID_USER_BCM2835_ISP_DPC``
++      - struct :c:type:`bcm2835_isp_dpc`
++
++++++++++++++++++++++++++
++Configuration Parameters
++++++++++++++++++++++++++
++
++.. kernel-doc:: include/uapi/linux/bcm2835-isp.h
++   :functions: bcm2835_isp_rational bcm2835_isp_ccm bcm2835_isp_custom_ccm
++                bcm2835_isp_gain_format bcm2835_isp_lens_shading
++                bcm2835_isp_black_level bcm2835_isp_geq bcm2835_isp_gamma
++                bcm2835_isp_denoise bcm2835_isp_sharpen
++                bcm2835_isp_dpc_mode bcm2835_isp_dpc
+--- a/Documentation/userspace-api/media/drivers/index.rst
++++ b/Documentation/userspace-api/media/drivers/index.rst
+@@ -35,6 +35,7 @@ For more details see the file COPYING in
+ 	cx2341x-uapi
+         hantro
+ 	imx-uapi
++	bcm2835-isp
+ 	max2175
+ 	meye-uapi
+ 	omap3isp-uapi
+--- a/include/uapi/linux/v4l2-controls.h
++++ b/include/uapi/linux/v4l2-controls.h
+@@ -212,6 +212,10 @@ enum v4l2_colorfx {
+  */
+ #define V4L2_CID_USER_CCS_BASE			(V4L2_CID_USER_BASE + 0x10f0)
+ 
++/* The base for the bcm2835-isp driver controls.
++ * We reserve 16 controls for this driver. */
++#define V4L2_CID_USER_BCM2835_ISP_BASE		(V4L2_CID_USER_BASE + 0x10f0)
++
+ /* MPEG-class control IDs */
+ /* The MPEG controls are applicable to all codec controls
+  * and the 'MPEG' part of the define is historical */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0221-staging-vchiq-Load-bcm2835_isp-driver-from-vchiq.patch b/target/linux/bcm27xx/patches-5.15/950-0221-staging-vchiq-Load-bcm2835_isp-driver-from-vchiq.patch
new file mode 100644
index 0000000000..b7e21290a0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0221-staging-vchiq-Load-bcm2835_isp-driver-from-vchiq.patch
@@ -0,0 +1,39 @@
+From 9f11509f86fca05990281a195850f7f7ab480636 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 22 Apr 2020 08:32:32 +0100
+Subject: [PATCH] staging: vchiq: Load bcm2835_isp driver from vchiq
+
+bcmn2835_isp is a platform driver dependent on vchiq,
+therefore add the load/unload functions for it to vchiq.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -69,6 +69,7 @@ static struct platform_device *bcm2835_c
+ static struct platform_device *bcm2835_audio;
+ static struct platform_device *bcm2835_codec;
+ static struct platform_device *vcsm_cma;
++static struct platform_device *bcm2835_isp;
+ 
+ static struct vchiq_drvdata bcm2835_drvdata = {
+ 	.cache_line_size = 32,
+@@ -1869,6 +1870,7 @@ static int vchiq_probe(struct platform_d
+ 	bcm2835_codec = vchiq_register_child(pdev, "bcm2835-codec");
+ 	bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
+ 	bcm2835_audio = vchiq_register_child(pdev, "bcm2835_audio");
++	bcm2835_isp = vchiq_register_child(pdev, "bcm2835-isp");
+ 
+ 	return 0;
+ 
+@@ -1880,6 +1882,7 @@ error_exit:
+ 
+ static int vchiq_remove(struct platform_device *pdev)
+ {
++	platform_device_unregister(bcm2835_isp);
+ 	platform_device_unregister(bcm2835_audio);
+ 	platform_device_unregister(bcm2835_camera);
+ 	platform_device_unregister(bcm2835_codec);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0222-bcm2835-dma-Add-proper-40-bit-DMA-support.patch b/target/linux/bcm27xx/patches-5.15/950-0222-bcm2835-dma-Add-proper-40-bit-DMA-support.patch
new file mode 100644
index 0000000000..297b6ac74b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0222-bcm2835-dma-Add-proper-40-bit-DMA-support.patch
@@ -0,0 +1,801 @@
+From 8d8f9e0697227ec7b71cd86d114d83ee2bb6431b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 4 Apr 2019 13:33:47 +0100
+Subject: [PATCH] bcm2835-dma: Add proper 40-bit DMA support
+
+BCM2711 has 4 DMA channels with a 40-bit address range, allowing them
+to access the full 4GB of memory on a Pi 4.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/dma/bcm2835-dma.c | 485 ++++++++++++++++++++++++++++++++------
+ 1 file changed, 412 insertions(+), 73 deletions(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -38,6 +38,11 @@
+ #define BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED 14
+ #define BCM2835_DMA_CHAN_NAME_SIZE 8
+ #define BCM2835_DMA_BULK_MASK  BIT(0)
++#define BCM2711_DMA_MEMCPY_CHAN 14
++
++struct bcm2835_dma_cfg_data {
++	u32	chan_40bit_mask;
++};
+ 
+ /**
+  * struct bcm2835_dmadev - BCM2835 DMA controller
+@@ -50,6 +55,7 @@ struct bcm2835_dmadev {
+ 	struct dma_device ddev;
+ 	void __iomem *base;
+ 	dma_addr_t zero_page;
++	const struct bcm2835_dma_cfg_data *cfg_data;
+ };
+ 
+ struct bcm2835_dma_cb {
+@@ -62,6 +68,17 @@ struct bcm2835_dma_cb {
+ 	uint32_t pad[2];
+ };
+ 
++struct bcm2711_dma40_scb {
++	uint32_t ti;
++	uint32_t src;
++	uint32_t srci;
++	uint32_t dst;
++	uint32_t dsti;
++	uint32_t len;
++	uint32_t next_cb;
++	uint32_t rsvd;
++};
++
+ struct bcm2835_cb_entry {
+ 	struct bcm2835_dma_cb *cb;
+ 	dma_addr_t paddr;
+@@ -82,6 +99,7 @@ struct bcm2835_chan {
+ 	unsigned int irq_flags;
+ 
+ 	bool is_lite_channel;
++	bool is_40bit_channel;
+ };
+ 
+ struct bcm2835_desc {
+@@ -171,13 +189,118 @@ struct bcm2835_desc {
+ #define BCM2835_DMA_DATA_TYPE_S128	16
+ 
+ /* Valid only for channels 0 - 14, 15 has its own base address */
+-#define BCM2835_DMA_CHAN(n)	((n) << 8) /* Base address */
++#define BCM2835_DMA_CHAN_SIZE	0x100
++#define BCM2835_DMA_CHAN(n)	((n) * BCM2835_DMA_CHAN_SIZE) /* Base address */
+ #define BCM2835_DMA_CHANIO(base, n) ((base) + BCM2835_DMA_CHAN(n))
+ 
+ /* the max dma length for different channels */
+ #define MAX_DMA_LEN SZ_1G
+ #define MAX_LITE_DMA_LEN (SZ_64K - 4)
+ 
++/* 40-bit DMA support */
++#define BCM2711_DMA40_CS	0x00
++#define BCM2711_DMA40_CB	0x04
++#define BCM2711_DMA40_DEBUG	0x0c
++#define BCM2711_DMA40_TI	0x10
++#define BCM2711_DMA40_SRC	0x14
++#define BCM2711_DMA40_SRCI	0x18
++#define BCM2711_DMA40_DEST	0x1c
++#define BCM2711_DMA40_DESTI	0x20
++#define BCM2711_DMA40_LEN	0x24
++#define BCM2711_DMA40_NEXT_CB	0x28
++#define BCM2711_DMA40_DEBUG2	0x2c
++
++#define BCM2711_DMA40_ACTIVE		BIT(0)
++#define BCM2711_DMA40_END		BIT(1)
++#define BCM2711_DMA40_INT		BIT(2)
++#define BCM2711_DMA40_DREQ		BIT(3)  /* DREQ state */
++#define BCM2711_DMA40_RD_PAUSED		BIT(4)  /* Reading is paused */
++#define BCM2711_DMA40_WR_PAUSED		BIT(5)  /* Writing is paused */
++#define BCM2711_DMA40_DREQ_PAUSED	BIT(6)  /* Is paused by DREQ flow control */
++#define BCM2711_DMA40_WAITING_FOR_WRITES BIT(7)  /* Waiting for last write */
++#define BCM2711_DMA40_ERR		BIT(10)
++#define BCM2711_DMA40_QOS(x)		(((x) & 0x1f) << 16)
++#define BCM2711_DMA40_PANIC_QOS(x)	(((x) & 0x1f) << 20)
++#define BCM2711_DMA40_WAIT_FOR_WRITES	BIT(28)
++#define BCM2711_DMA40_DISDEBUG		BIT(29)
++#define BCM2711_DMA40_ABORT		BIT(30)
++#define BCM2711_DMA40_HALT		BIT(31)
++#define BCM2711_DMA40_CS_FLAGS(x) (x & (BCM2711_DMA40_QOS(15) | \
++					BCM2711_DMA40_PANIC_QOS(15) | \
++					BCM2711_DMA40_WAIT_FOR_WRITES |	\
++					BCM2711_DMA40_DISDEBUG))
++
++/* Transfer information bits */
++#define BCM2711_DMA40_INTEN		BIT(0)
++#define BCM2711_DMA40_TDMODE		BIT(1) /* 2D-Mode */
++#define BCM2711_DMA40_WAIT_RESP		BIT(2) /* wait for AXI write to be acked */
++#define BCM2711_DMA40_WAIT_RD_RESP	BIT(3) /* wait for AXI read to complete */
++#define BCM2711_DMA40_PER_MAP(x)	((x & 31) << 9) /* REQ source */
++#define BCM2711_DMA40_S_DREQ		BIT(14) /* enable SREQ for source */
++#define BCM2711_DMA40_D_DREQ		BIT(15) /* enable DREQ for destination */
++#define BCM2711_DMA40_S_WAIT(x)		((x & 0xff) << 16) /* add DMA read-wait cycles */
++#define BCM2711_DMA40_D_WAIT(x)		((x & 0xff) << 24) /* add DMA write-wait cycles */
++
++/* debug register bits */
++#define BCM2711_DMA40_DEBUG_WRITE_ERR		BIT(0)
++#define BCM2711_DMA40_DEBUG_FIFO_ERR		BIT(1)
++#define BCM2711_DMA40_DEBUG_READ_ERR		BIT(2)
++#define BCM2711_DMA40_DEBUG_READ_CB_ERR		BIT(3)
++#define BCM2711_DMA40_DEBUG_IN_ON_ERR		BIT(8)
++#define BCM2711_DMA40_DEBUG_ABORT_ON_ERR	BIT(9)
++#define BCM2711_DMA40_DEBUG_HALT_ON_ERR		BIT(10)
++#define BCM2711_DMA40_DEBUG_DISABLE_CLK_GATE	BIT(11)
++#define BCM2711_DMA40_DEBUG_RSTATE_SHIFT	14
++#define BCM2711_DMA40_DEBUG_RSTATE_BITS		4
++#define BCM2711_DMA40_DEBUG_WSTATE_SHIFT	18
++#define BCM2711_DMA40_DEBUG_WSTATE_BITS		4
++#define BCM2711_DMA40_DEBUG_RESET		BIT(23)
++#define BCM2711_DMA40_DEBUG_ID_SHIFT		24
++#define BCM2711_DMA40_DEBUG_ID_BITS		4
++#define BCM2711_DMA40_DEBUG_VERSION_SHIFT	28
++#define BCM2711_DMA40_DEBUG_VERSION_BITS	4
++
++/* Valid only for channels 0 - 3 (11 - 14) */
++#define BCM2711_DMA40_CHAN(n)	(((n) + 11) << 8) /* Base address */
++#define BCM2711_DMA40_CHANIO(base, n) ((base) + BCM2711_DMA_CHAN(n))
++
++/* the max dma length for different channels */
++#define MAX_DMA40_LEN SZ_1G
++
++#define BCM2711_DMA40_BURST_LEN(x)	((min(x,16) - 1) << 8)
++#define BCM2711_DMA40_INC		BIT(12)
++#define BCM2711_DMA40_SIZE_32		(0 << 13)
++#define BCM2711_DMA40_SIZE_64		(1 << 13)
++#define BCM2711_DMA40_SIZE_128		(2 << 13)
++#define BCM2711_DMA40_SIZE_256		(3 << 13)
++#define BCM2711_DMA40_IGNORE		BIT(15)
++#define BCM2711_DMA40_STRIDE(x)		((x) << 16) /* For 2D mode */
++
++#define BCM2711_DMA40_MEMCPY_FLAGS \
++	(BCM2711_DMA40_QOS(0) | \
++	 BCM2711_DMA40_PANIC_QOS(0) | \
++	 BCM2711_DMA40_WAIT_FOR_WRITES | \
++	 BCM2711_DMA40_DISDEBUG)
++
++#define BCM2711_DMA40_MEMCPY_XFER_INFO \
++	(BCM2711_DMA40_SIZE_128 | \
++	 BCM2711_DMA40_INC | \
++	 BCM2711_DMA40_BURST_LEN(16))
++
++struct bcm2835_dmadev *memcpy_parent;
++static void __iomem *memcpy_chan;
++static struct bcm2711_dma40_scb *memcpy_scb;
++static dma_addr_t memcpy_scb_dma;
++DEFINE_SPINLOCK(memcpy_lock);
++
++static const struct bcm2835_dma_cfg_data bcm2835_dma_cfg = {
++	.chan_40bit_mask = 0,
++};
++
++static const struct bcm2835_dma_cfg_data bcm2711_dma_cfg = {
++	.chan_40bit_mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
++};
++
+ static inline size_t bcm2835_dma_max_frame_length(struct bcm2835_chan *c)
+ {
+ 	/* lite and normal channels have different max frame length */
+@@ -207,6 +330,32 @@ static inline struct bcm2835_desc *to_bc
+ 	return container_of(t, struct bcm2835_desc, vd.tx);
+ }
+ 
++static inline uint32_t to_bcm2711_ti(uint32_t info)
++{
++	return ((info & BCM2835_DMA_INT_EN) ? BCM2711_DMA40_INTEN : 0) |
++		((info & BCM2835_DMA_WAIT_RESP) ? BCM2711_DMA40_WAIT_RESP : 0) |
++		((info & BCM2835_DMA_S_DREQ) ?
++		 (BCM2711_DMA40_S_DREQ | BCM2711_DMA40_WAIT_RD_RESP) : 0) |
++		((info & BCM2835_DMA_D_DREQ) ? BCM2711_DMA40_D_DREQ : 0) |
++		BCM2711_DMA40_PER_MAP((info >> 16) & 0x1f);
++}
++
++static inline uint32_t to_bcm2711_srci(uint32_t info)
++{
++	return ((info & BCM2835_DMA_S_INC) ? BCM2711_DMA40_INC : 0);
++}
++
++static inline uint32_t to_bcm2711_dsti(uint32_t info)
++{
++	return ((info & BCM2835_DMA_D_INC) ? BCM2711_DMA40_INC : 0);
++}
++
++static inline uint32_t to_bcm2711_cbaddr(dma_addr_t addr)
++{
++	BUG_ON(addr & 0x1f);
++	return (addr >> 5);
++}
++
+ static void bcm2835_dma_free_cb_chain(struct bcm2835_desc *desc)
+ {
+ 	size_t i;
+@@ -225,45 +374,53 @@ static void bcm2835_dma_desc_free(struct
+ }
+ 
+ static void bcm2835_dma_create_cb_set_length(
+-	struct bcm2835_chan *chan,
++	struct bcm2835_chan *c,
+ 	struct bcm2835_dma_cb *control_block,
+ 	size_t len,
+ 	size_t period_len,
+ 	size_t *total_len,
+ 	u32 finalextrainfo)
+ {
+-	size_t max_len = bcm2835_dma_max_frame_length(chan);
++	size_t max_len = bcm2835_dma_max_frame_length(c);
++	uint32_t cb_len;
+ 
+ 	/* set the length taking lite-channel limitations into account */
+-	control_block->length = min_t(u32, len, max_len);
++	cb_len = min_t(u32, len, max_len);
+ 
+-	/* finished if we have no period_length */
+-	if (!period_len)
+-		return;
++	if (period_len) {
++		/*
++		 * period_len means: that we need to generate
++		 * transfers that are terminating at every
++		 * multiple of period_len - this is typically
++		 * used to set the interrupt flag in info
++		 * which is required during cyclic transfers
++		 */
+ 
+-	/*
+-	 * period_len means: that we need to generate
+-	 * transfers that are terminating at every
+-	 * multiple of period_len - this is typically
+-	 * used to set the interrupt flag in info
+-	 * which is required during cyclic transfers
+-	 */
++		/* have we filled in period_length yet? */
++		if (*total_len + cb_len < period_len) {
++			/* update number of bytes in this period so far */
++			*total_len += cb_len;
++		} else {
++			/* calculate the length that remains to reach period_len */
++			cb_len = period_len - *total_len;
+ 
+-	/* have we filled in period_length yet? */
+-	if (*total_len + control_block->length < period_len) {
+-		/* update number of bytes in this period so far */
+-		*total_len += control_block->length;
+-		return;
++			/* reset total_length for next period */
++			*total_len = 0;
++		}
+ 	}
+ 
+-	/* calculate the length that remains to reach period_length */
+-	control_block->length = period_len - *total_len;
+-
+-	/* reset total_length for next period */
+-	*total_len = 0;
+-
+-	/* add extrainfo bits in info */
+-	control_block->info |= finalextrainfo;
++	if (c->is_40bit_channel) {
++		struct bcm2711_dma40_scb *scb =
++			(struct bcm2711_dma40_scb *)control_block;
++
++		scb->len = cb_len;
++		/* add extrainfo bits to ti */
++		scb->ti |= to_bcm2711_ti(finalextrainfo);
++	} else {
++		control_block->length = cb_len;
++		/* add extrainfo bits to info */
++		control_block->info |= finalextrainfo;
++	}
+ }
+ 
+ static inline size_t bcm2835_dma_count_frames_for_sg(
+@@ -286,7 +443,7 @@ static inline size_t bcm2835_dma_count_f
+ /**
+  * bcm2835_dma_create_cb_chain - create a control block and fills data in
+  *
+- * @chan:           the @dma_chan for which we run this
++ * @c:              the @bcm2835_chan for which we run this
+  * @direction:      the direction in which we transfer
+  * @cyclic:         it is a cyclic transfer
+  * @info:           the default info bits to apply per controlblock
+@@ -304,12 +461,11 @@ static inline size_t bcm2835_dma_count_f
+  * @gfp:            the GFP flag to use for allocation
+  */
+ static struct bcm2835_desc *bcm2835_dma_create_cb_chain(
+-	struct dma_chan *chan, enum dma_transfer_direction direction,
++	struct bcm2835_chan *c, enum dma_transfer_direction direction,
+ 	bool cyclic, u32 info, u32 finalextrainfo, size_t frames,
+ 	dma_addr_t src, dma_addr_t dst, size_t buf_len,
+ 	size_t period_len, gfp_t gfp)
+ {
+-	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	size_t len = buf_len, total_len;
+ 	size_t frame;
+ 	struct bcm2835_desc *d;
+@@ -341,11 +497,23 @@ static struct bcm2835_desc *bcm2835_dma_
+ 
+ 		/* fill in the control block */
+ 		control_block = cb_entry->cb;
+-		control_block->info = info;
+-		control_block->src = src;
+-		control_block->dst = dst;
+-		control_block->stride = 0;
+-		control_block->next = 0;
++		if (c->is_40bit_channel) {
++			struct bcm2711_dma40_scb *scb =
++				(struct bcm2711_dma40_scb *)control_block;
++			scb->ti = to_bcm2711_ti(info);
++			scb->src = lower_32_bits(src);
++			scb->srci= upper_32_bits(src) | to_bcm2711_srci(info);
++			scb->dst = lower_32_bits(dst);
++			scb->dsti = upper_32_bits(dst) | to_bcm2711_dsti(info);
++			scb->next_cb = 0;
++		} else {
++			control_block->info = info;
++			control_block->src = src;
++			control_block->dst = dst;
++			control_block->stride = 0;
++			control_block->next = 0;
++		}
++
+ 		/* set up length in control_block if requested */
+ 		if (buf_len) {
+ 			/* calculate length honoring period_length */
+@@ -359,7 +527,11 @@ static struct bcm2835_desc *bcm2835_dma_
+ 		}
+ 
+ 		/* link this the last controlblock */
+-		if (frame)
++		if (frame && c->is_40bit_channel)
++			((struct bcm2711_dma40_scb *)
++			 d->cb_list[frame - 1].cb)->next_cb =
++				to_bcm2711_cbaddr(cb_entry->paddr);
++		if (frame && !c->is_40bit_channel)
+ 			d->cb_list[frame - 1].cb->next = cb_entry->paddr;
+ 
+ 		/* update src and dst and length */
+@@ -369,11 +541,21 @@ static struct bcm2835_desc *bcm2835_dma_
+ 			dst += control_block->length;
+ 
+ 		/* Length of total transfer */
+-		d->size += control_block->length;
++		if (c->is_40bit_channel)
++			d->size += ((struct bcm2711_dma40_scb *)control_block)->len;
++		else
++			d->size += control_block->length;
+ 	}
+ 
+ 	/* the last frame requires extra flags */
+-	d->cb_list[d->frames - 1].cb->info |= finalextrainfo;
++	if (c->is_40bit_channel) {
++		struct bcm2711_dma40_scb *scb =
++			(struct bcm2711_dma40_scb *)d->cb_list[d->frames-1].cb;
++
++		scb->ti |= to_bcm2711_ti(finalextrainfo);
++	} else {
++		d->cb_list[d->frames - 1].cb->info |= finalextrainfo;
++	}
+ 
+ 	/* detect a size missmatch */
+ 	if (buf_len && (d->size != buf_len))
+@@ -387,13 +569,12 @@ error_cb:
+ }
+ 
+ static void bcm2835_dma_fill_cb_chain_with_sg(
+-	struct dma_chan *chan,
++	struct bcm2835_chan *c,
+ 	enum dma_transfer_direction direction,
+ 	struct bcm2835_cb_entry *cb,
+ 	struct scatterlist *sgl,
+ 	unsigned int sg_len)
+ {
+-	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	size_t len, max_len;
+ 	unsigned int i;
+ 	dma_addr_t addr;
+@@ -401,14 +582,35 @@ static void bcm2835_dma_fill_cb_chain_wi
+ 
+ 	max_len = bcm2835_dma_max_frame_length(c);
+ 	for_each_sg(sgl, sgent, sg_len, i) {
+-		for (addr = sg_dma_address(sgent), len = sg_dma_len(sgent);
+-		     len > 0;
+-		     addr += cb->cb->length, len -= cb->cb->length, cb++) {
+-			if (direction == DMA_DEV_TO_MEM)
+-				cb->cb->dst = addr;
+-			else
+-				cb->cb->src = addr;
+-			cb->cb->length = min(len, max_len);
++		if (c->is_40bit_channel) {
++			struct bcm2711_dma40_scb *scb;
++
++			for (addr = sg_dma_address(sgent),
++				     len = sg_dma_len(sgent);
++				     len > 0;
++			     addr += scb->len, len -= scb->len, cb++) {
++				scb = (struct bcm2711_dma40_scb *)cb->cb;
++				if (direction == DMA_DEV_TO_MEM) {
++					scb->dst = lower_32_bits(addr);
++					scb->dsti = upper_32_bits(addr) | BCM2711_DMA40_INC;
++				} else {
++					scb->src = lower_32_bits(addr);
++					scb->srci = upper_32_bits(addr) | BCM2711_DMA40_INC;
++				}
++				scb->len = min(len, max_len);
++			}
++		} else {
++			for (addr = sg_dma_address(sgent),
++				     len = sg_dma_len(sgent);
++			     len > 0;
++			     addr += cb->cb->length, len -= cb->cb->length,
++			     cb++) {
++				if (direction == DMA_DEV_TO_MEM)
++					cb->cb->dst = addr;
++				else
++					cb->cb->src = addr;
++				cb->cb->length = min(len, max_len);
++			}
+ 		}
+ 	}
+ }
+@@ -417,6 +619,10 @@ static void bcm2835_dma_abort(struct bcm
+ {
+ 	void __iomem *chan_base = c->chan_base;
+ 	long int timeout = 10000;
++	u32 wait_mask = BCM2835_DMA_WAITING_FOR_WRITES;
++
++	if (c->is_40bit_channel)
++		wait_mask = BCM2711_DMA40_WAITING_FOR_WRITES;
+ 
+ 	/*
+ 	 * A zero control block address means the channel is idle.
+@@ -429,8 +635,7 @@ static void bcm2835_dma_abort(struct bcm
+ 	writel(0, chan_base + BCM2835_DMA_CS);
+ 
+ 	/* Wait for any current AXI transfer to complete */
+-	while ((readl(chan_base + BCM2835_DMA_CS) &
+-		BCM2835_DMA_WAITING_FOR_WRITES) && --timeout)
++	while ((readl(chan_base + BCM2835_DMA_CS) & wait_mask) && --timeout)
+ 		cpu_relax();
+ 
+ 	/* Peripheral might be stuck and fail to signal AXI write responses */
+@@ -455,9 +660,16 @@ static void bcm2835_dma_start_desc(struc
+ 
+ 	c->desc = d = to_bcm2835_dma_desc(&vd->tx);
+ 
+-	writel(d->cb_list[0].paddr, c->chan_base + BCM2835_DMA_ADDR);
+-	writel(BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq),
+-	       c->chan_base + BCM2835_DMA_CS);
++	if (c->is_40bit_channel) {
++		writel(to_bcm2711_cbaddr(d->cb_list[0].paddr),
++		       c->chan_base + BCM2711_DMA40_CB);
++		writel(BCM2711_DMA40_ACTIVE | BCM2711_DMA40_CS_FLAGS(c->dreq),
++		       c->chan_base + BCM2711_DMA40_CS);
++	} else {
++		writel(d->cb_list[0].paddr, c->chan_base + BCM2835_DMA_ADDR);
++		writel(BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq),
++		       c->chan_base + BCM2835_DMA_CS);
++	}
+ }
+ 
+ static irqreturn_t bcm2835_dma_callback(int irq, void *data)
+@@ -484,8 +696,7 @@ static irqreturn_t bcm2835_dma_callback(
+ 	 * if this IRQ handler is threaded.) If the channel is finished, it
+ 	 * will remain idle despite the ACTIVE flag being set.
+ 	 */
+-	writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE |
+-	       BCM2835_DMA_CS_FLAGS(c->dreq),
++	writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE,
+ 	       c->chan_base + BCM2835_DMA_CS);
+ 
+ 	d = c->desc;
+@@ -588,9 +799,17 @@ static enum dma_status bcm2835_dma_tx_st
+ 		struct bcm2835_desc *d = c->desc;
+ 		dma_addr_t pos;
+ 
+-		if (d->dir == DMA_MEM_TO_DEV)
++		if (d->dir == DMA_MEM_TO_DEV && c->is_40bit_channel)
++			pos = readl(c->chan_base + BCM2711_DMA40_SRC) +
++				((readl(c->chan_base + BCM2711_DMA40_SRCI) &
++				  0xff) << 8);
++		else if (d->dir == DMA_MEM_TO_DEV && !c->is_40bit_channel)
+ 			pos = readl(c->chan_base + BCM2835_DMA_SOURCE_AD);
+-		else if (d->dir == DMA_DEV_TO_MEM)
++		else if (d->dir == DMA_DEV_TO_MEM && c->is_40bit_channel)
++			pos = readl(c->chan_base + BCM2711_DMA40_DEST) +
++				((readl(c->chan_base + BCM2711_DMA40_DESTI) &
++				  0xff) << 8);
++		else if (d->dir == DMA_DEV_TO_MEM && !c->is_40bit_channel)
+ 			pos = readl(c->chan_base + BCM2835_DMA_DEST_AD);
+ 		else
+ 			pos = 0;
+@@ -636,7 +855,7 @@ static struct dma_async_tx_descriptor *b
+ 	frames = bcm2835_dma_frames_for_length(len, max_len);
+ 
+ 	/* allocate the CB chain - this also fills in the pointers */
+-	d = bcm2835_dma_create_cb_chain(chan, DMA_MEM_TO_MEM, false,
++	d = bcm2835_dma_create_cb_chain(c, DMA_MEM_TO_MEM, false,
+ 					info, extra, frames,
+ 					src, dst, len, 0, GFP_KERNEL);
+ 	if (!d)
+@@ -671,11 +890,21 @@ static struct dma_async_tx_descriptor *b
+ 		if (c->cfg.src_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES)
+ 			return NULL;
+ 		src = c->cfg.src_addr;
++		/*
++		 * One would think it ought to be possible to get the physical
++		 * to dma address mapping information from the dma-ranges DT
++		 * property, but I've not found a way yet that doesn't involve
++		 * open-coding the whole thing.
++		 */
++		if (c->is_40bit_channel)
++		    src |= 0x400000000ull;
+ 		info |= BCM2835_DMA_S_DREQ | BCM2835_DMA_D_INC;
+ 	} else {
+ 		if (c->cfg.dst_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES)
+ 			return NULL;
+ 		dst = c->cfg.dst_addr;
++		if (c->is_40bit_channel)
++		    dst |= 0x400000000ull;
+ 		info |= BCM2835_DMA_D_DREQ | BCM2835_DMA_S_INC;
+ 	}
+ 
+@@ -683,7 +912,7 @@ static struct dma_async_tx_descriptor *b
+ 	frames = bcm2835_dma_count_frames_for_sg(c, sgl, sg_len);
+ 
+ 	/* allocate the CB chain */
+-	d = bcm2835_dma_create_cb_chain(chan, direction, false,
++	d = bcm2835_dma_create_cb_chain(c, direction, false,
+ 					info, extra,
+ 					frames, src, dst, 0, 0,
+ 					GFP_NOWAIT);
+@@ -691,7 +920,7 @@ static struct dma_async_tx_descriptor *b
+ 		return NULL;
+ 
+ 	/* fill in frames with scatterlist pointers */
+-	bcm2835_dma_fill_cb_chain_with_sg(chan, direction, d->cb_list,
++	bcm2835_dma_fill_cb_chain_with_sg(c, direction, d->cb_list,
+ 					  sgl, sg_len);
+ 
+ 	return vchan_tx_prep(&c->vc, &d->vd, flags);
+@@ -745,12 +974,16 @@ static struct dma_async_tx_descriptor *b
+ 		if (c->cfg.src_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES)
+ 			return NULL;
+ 		src = c->cfg.src_addr;
++		if (c->is_40bit_channel)
++		    src |= 0x400000000ull;
+ 		dst = buf_addr;
+ 		info |= BCM2835_DMA_S_DREQ | BCM2835_DMA_D_INC;
+ 	} else {
+ 		if (c->cfg.dst_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES)
+ 			return NULL;
+ 		dst = c->cfg.dst_addr;
++		if (c->is_40bit_channel)
++		    dst |= 0x400000000ull;
+ 		src = buf_addr;
+ 		info |= BCM2835_DMA_D_DREQ | BCM2835_DMA_S_INC;
+ 
+@@ -770,7 +1003,7 @@ static struct dma_async_tx_descriptor *b
+ 	 * note that we need to use GFP_NOWAIT, as the ALSA i2s dmaengine
+ 	 * implementation calls prep_dma_cyclic with interrupts disabled.
+ 	 */
+-	d = bcm2835_dma_create_cb_chain(chan, direction, true,
++	d = bcm2835_dma_create_cb_chain(c, direction, true,
+ 					info, extra,
+ 					frames, src, dst, buf_len,
+ 					period_len, GFP_NOWAIT);
+@@ -778,7 +1011,12 @@ static struct dma_async_tx_descriptor *b
+ 		return NULL;
+ 
+ 	/* wrap around into a loop */
+-	d->cb_list[d->frames - 1].cb->next = d->cb_list[0].paddr;
++	if (c->is_40bit_channel)
++		((struct bcm2711_dma40_scb *)
++		 d->cb_list[frames - 1].cb)->next_cb =
++			to_bcm2711_cbaddr(d->cb_list[0].paddr);
++	else
++		d->cb_list[d->frames - 1].cb->next = d->cb_list[0].paddr;
+ 
+ 	return vchan_tx_prep(&c->vc, &d->vd, flags);
+ }
+@@ -839,9 +1077,11 @@ static int bcm2835_dma_chan_init(struct
+ 	c->irq_number = irq;
+ 	c->irq_flags = irq_flags;
+ 
+-	/* check in DEBUG register if this is a LITE channel */
+-	if (readl(c->chan_base + BCM2835_DMA_DEBUG) &
+-		BCM2835_DMA_DEBUG_LITE)
++	/* check for 40bit and lite channels */
++	if (d->cfg_data->chan_40bit_mask & BIT(chan_id))
++		c->is_40bit_channel = true;
++	else if (readl(c->chan_base + BCM2835_DMA_DEBUG) &
++		 BCM2835_DMA_DEBUG_LITE)
+ 		c->is_lite_channel = true;
+ 
+ 	return 0;
+@@ -861,8 +1101,58 @@ static void bcm2835_dma_free(struct bcm2
+ 			     DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
+ }
+ 
++int bcm2711_dma40_memcpy_init(void)
++{
++	if (!memcpy_parent)
++		return -EPROBE_DEFER;
++
++	if (!memcpy_chan)
++		return -EINVAL;
++
++	if (!memcpy_scb)
++		return -ENOMEM;
++
++	return 0;
++}
++EXPORT_SYMBOL(bcm2711_dma40_memcpy_init);
++
++void bcm2711_dma40_memcpy(dma_addr_t dst, dma_addr_t src, size_t size)
++{
++	struct bcm2711_dma40_scb *scb = memcpy_scb;
++	unsigned long flags;
++
++	if (!scb) {
++		pr_err("bcm2711_dma40_memcpy not initialised!\n");
++		return;
++	}
++
++	spin_lock_irqsave(&memcpy_lock, flags);
++
++	scb->ti = 0;
++	scb->src = lower_32_bits(src);
++	scb->srci = upper_32_bits(src) | BCM2711_DMA40_MEMCPY_XFER_INFO;
++	scb->dst = lower_32_bits(dst);
++	scb->dsti = upper_32_bits(dst) | BCM2711_DMA40_MEMCPY_XFER_INFO;
++	scb->len = size;
++	scb->next_cb = 0;
++
++	writel((u32)(memcpy_scb_dma >> 5), memcpy_chan + BCM2711_DMA40_CB);
++	writel(BCM2711_DMA40_MEMCPY_FLAGS + BCM2711_DMA40_ACTIVE,
++	       memcpy_chan + BCM2711_DMA40_CS);
++
++	/* Poll for completion */
++	while (!(readl(memcpy_chan + BCM2711_DMA40_CS) & BCM2711_DMA40_END))
++		cpu_relax();
++
++	writel(BCM2711_DMA40_END, memcpy_chan + BCM2711_DMA40_CS);
++
++	spin_unlock_irqrestore(&memcpy_lock, flags);
++}
++EXPORT_SYMBOL(bcm2711_dma40_memcpy);
++
+ static const struct of_device_id bcm2835_dma_of_match[] = {
+-	{ .compatible = "brcm,bcm2835-dma", },
++	{ .compatible = "brcm,bcm2835-dma", .data = &bcm2835_dma_cfg },
++	{ .compatible = "brcm,bcm2711-dma", .data = &bcm2711_dma_cfg },
+ 	{},
+ };
+ MODULE_DEVICE_TABLE(of, bcm2835_dma_of_match);
+@@ -894,6 +1184,8 @@ static int bcm2835_dma_probe(struct plat
+ 	int irq_flags;
+ 	uint32_t chans_available;
+ 	char chan_name[BCM2835_DMA_CHAN_NAME_SIZE];
++	const struct of_device_id *of_id;
++	int chan_count, chan_start, chan_end;
+ 
+ 	if (!pdev->dev.dma_mask)
+ 		pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+@@ -914,9 +1206,13 @@ static int bcm2835_dma_probe(struct plat
+ 	base = devm_ioremap_resource(&pdev->dev, res);
+ 	if (IS_ERR(base))
+ 		return PTR_ERR(base);
+-	rc = bcm_dmaman_probe(pdev, base, BCM2835_DMA_BULK_MASK);
+-	if (rc)
+-		dev_err(&pdev->dev, "Failed to initialize the legacy API\n");
++
++	/* The set of channels can be split across multiple instances. */
++	chan_start = ((u32)(uintptr_t)base / BCM2835_DMA_CHAN_SIZE) & 0xf;
++	base -= BCM2835_DMA_CHAN(chan_start);
++	chan_count = resource_size(res) / BCM2835_DMA_CHAN_SIZE;
++	chan_end = min(chan_start + chan_count,
++			 BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED + 1);
+ 
+ 	od->base = base;
+ 
+@@ -953,6 +1249,14 @@ static int bcm2835_dma_probe(struct plat
+ 		return -ENOMEM;
+ 	}
+ 
++	of_id = of_match_node(bcm2835_dma_of_match, pdev->dev.of_node);
++	if (!of_id) {
++		dev_err(&pdev->dev, "Failed to match compatible string\n");
++		return -EINVAL;
++	}
++
++	od->cfg_data = of_id->data;
++
+ 	/* Request DMA channel mask from device tree */
+ 	if (of_property_read_u32(pdev->dev.of_node,
+ 			"brcm,dma-channel-mask",
+@@ -962,11 +1266,34 @@ static int bcm2835_dma_probe(struct plat
+ 		goto err_no_dma;
+ 	}
+ 
+-	/* Channel 0 is used by the legacy API */
+-	chans_available &= ~BCM2835_DMA_BULK_MASK;
++	/* One channel is reserved for the legacy API */
++	if (chans_available & BCM2835_DMA_BULK_MASK) {
++		rc = bcm_dmaman_probe(pdev, base,
++				      chans_available & BCM2835_DMA_BULK_MASK);
++		if (rc)
++			dev_err(&pdev->dev,
++				"Failed to initialize the legacy API\n");
++
++		chans_available &= ~BCM2835_DMA_BULK_MASK;
++	}
++
++	/* And possibly one for the 40-bit DMA memcpy API */
++	if (chans_available & od->cfg_data->chan_40bit_mask &
++	    BIT(BCM2711_DMA_MEMCPY_CHAN)) {
++		memcpy_parent = od;
++		memcpy_chan = BCM2835_DMA_CHANIO(base, BCM2711_DMA_MEMCPY_CHAN);
++		memcpy_scb = dma_alloc_coherent(memcpy_parent->ddev.dev,
++						sizeof(*memcpy_scb),
++						&memcpy_scb_dma, GFP_KERNEL);
++		if (!memcpy_scb)
++			dev_warn(&pdev->dev,
++				 "Failed to allocated memcpy scb\n");
++
++		chans_available &= ~BIT(BCM2711_DMA_MEMCPY_CHAN);
++	}
+ 
+ 	/* get irqs for each channel that we support */
+-	for (i = 0; i <= BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED; i++) {
++	for (i = chan_start; i < chan_end; i++) {
+ 		/* skip masked out channels */
+ 		if (!(chans_available & (1 << i))) {
+ 			irq[i] = -1;
+@@ -989,13 +1316,17 @@ static int bcm2835_dma_probe(struct plat
+ 		irq[i] = platform_get_irq(pdev, i < 11 ? i : 11);
+ 	}
+ 
++	chan_count = 0;
++
+ 	/* get irqs for each channel */
+-	for (i = 0; i <= BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED; i++) {
++	for (i = chan_start; i < chan_end; i++) {
+ 		/* skip channels without irq */
+ 		if (irq[i] < 0)
+ 			continue;
+ 
+ 		/* check if there are other channels that also use this irq */
++		/* FIXME: This will fail if interrupts are shared across
++		   instances */
+ 		irq_flags = 0;
+ 		for (j = 0; j <= BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED; j++)
+ 			if ((i != j) && (irq[j] == irq[i])) {
+@@ -1007,9 +1338,10 @@ static int bcm2835_dma_probe(struct plat
+ 		rc = bcm2835_dma_chan_init(od, i, irq[i], irq_flags);
+ 		if (rc)
+ 			goto err_no_dma;
++		chan_count++;
+ 	}
+ 
+-	dev_dbg(&pdev->dev, "Initialized %i DMA channels\n", i);
++	dev_dbg(&pdev->dev, "Initialized %i DMA channels\n", chan_count);
+ 
+ 	/* Device-tree DMA controller registration */
+ 	rc = of_dma_controller_register(pdev->dev.of_node,
+@@ -1041,6 +1373,13 @@ static int bcm2835_dma_remove(struct pla
+ 
+ 	bcm_dmaman_remove(pdev);
+ 	dma_async_device_unregister(&od->ddev);
++	if (memcpy_parent == od) {
++		dma_free_coherent(&pdev->dev, sizeof(*memcpy_scb), memcpy_scb,
++				  memcpy_scb_dma);
++		memcpy_parent = NULL;
++		memcpy_scb = NULL;
++		memcpy_chan = NULL;
++	}
+ 	bcm2835_dma_free(od);
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0223-media-bcm2835-unicam-Add-support-for-VIDIOC_-S-G-_SE.patch b/target/linux/bcm27xx/patches-5.15/950-0223-media-bcm2835-unicam-Add-support-for-VIDIOC_-S-G-_SE.patch
new file mode 100644
index 0000000000..18cffde796
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0223-media-bcm2835-unicam-Add-support-for-VIDIOC_-S-G-_SE.patch
@@ -0,0 +1,82 @@
+From 2a6df1416027768c6e6f01ef39659b8b2e95f034 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 29 Apr 2020 16:45:02 +0100
+Subject: [PATCH] media: bcm2835-unicam: Add support for
+ VIDIOC_[S|G]_SELECTION
+
+Sensors are now reflecting cropping and scaling parameters through
+the selection API, therefore Unicam needs to forward the requests
+through to the subdev.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 44 +++++++++++++++++++
+ 1 file changed, 44 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1898,6 +1898,39 @@ static int unicam_g_edid(struct file *fi
+ 	return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
+ }
+ 
++static int unicam_s_selection(struct file *file, void *priv,
++			      struct v4l2_selection *sel)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_selection sdsel = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.target = sel->target,
++		.flags = sel->flags,
++		.r = sel->r,
++	};
++
++	return v4l2_subdev_call(dev->sensor, pad, set_selection, NULL, &sdsel);
++}
++
++static int unicam_g_selection(struct file *file, void *priv,
++			      struct v4l2_selection *sel)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_selection sdsel = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.target = sel->target,
++	};
++	int ret;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, get_selection, NULL, &sdsel);
++	if (!ret)
++		sel->r = sdsel.r;
++
++	return ret;
++}
++
+ static int unicam_enum_framesizes(struct file *file, void *priv,
+ 				  struct v4l2_frmsizeenum *fsize)
+ {
+@@ -2218,6 +2251,9 @@ static const struct v4l2_ioctl_ops unica
+ 	.vidioc_enum_framesizes		= unicam_enum_framesizes,
+ 	.vidioc_enum_frameintervals	= unicam_enum_frameintervals,
+ 
++	.vidioc_g_selection		= unicam_g_selection,
++	.vidioc_s_selection		= unicam_s_selection,
++
+ 	.vidioc_g_parm			= unicam_g_parm,
+ 	.vidioc_s_parm			= unicam_s_parm,
+ 
+@@ -2446,6 +2482,14 @@ static int register_node(struct unicam_d
+ 	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_FRAMESIZES);
+ 
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, set_selection))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_SELECTION);
++
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, get_selection))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_SELECTION);
++
+ 	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+ 	if (ret) {
+ 		unicam_err(unicam, "Unable to register video device.\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0224-media-bcm2835-unicam-Do-not-stop-streaming-in-unicam.patch b/target/linux/bcm27xx/patches-5.15/950-0224-media-bcm2835-unicam-Do-not-stop-streaming-in-unicam.patch
new file mode 100644
index 0000000000..d15eb82472
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0224-media-bcm2835-unicam-Do-not-stop-streaming-in-unicam.patch
@@ -0,0 +1,28 @@
+From 8e878b9ef7d6078e5facad9ebc0eacca9cbe3688 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 29 Apr 2020 22:05:09 +0100
+Subject: [PATCH] media: bcm2835-unicam: Do not stop streaming in
+ unicam_release
+
+unicam_release calls _vb2_fop_release, which will call stop_streaming
+if that particular node was streaming. Calling it unconditionally (as
+the code was) means that if a second handle was opened eg to alter
+a setting, on closing that connection it also stopped Unicam.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2204,9 +2204,6 @@ static int unicam_release(struct file *f
+ 	if (fh_singular)
+ 		v4l2_subdev_call(sd, core, s_power, 0);
+ 
+-	if (node->streaming)
+-		unicam_stop_streaming(&node->buffer_queue);
+-
+ 	node->open--;
+ 	mutex_unlock(&node->lock);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0225-media-bcm2835-unicam-Fix-reference-counting-in-unica.patch b/target/linux/bcm27xx/patches-5.15/950-0225-media-bcm2835-unicam-Fix-reference-counting-in-unica.patch
new file mode 100644
index 0000000000..51e88cad1e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0225-media-bcm2835-unicam-Fix-reference-counting-in-unica.patch
@@ -0,0 +1,38 @@
+From 25ab75ec729423e9e230ef3fe027c275ab17addb Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 30 Apr 2020 09:52:50 +0100
+Subject: [PATCH] media: bcm2835-unicam: Fix reference counting in
+ unicam_open
+
+The reference counting of node->open was only incremented after
+a check that the node was v4l2_fh_is_singular_file, which resulted
+in the counting going wrong and s_power not being called at an
+appropriate time.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2170,16 +2170,18 @@ static int unicam_open(struct file *file
+ 		goto unlock;
+ 	}
+ 
++	node->open++;
++
+ 	if (!v4l2_fh_is_singular_file(file))
+ 		goto unlock;
+ 
+ 	ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
+ 	if (ret < 0 && ret != -ENOIOCTLCMD) {
+ 		v4l2_fh_release(file);
++		node->open--;
+ 		goto unlock;
+ 	}
+ 
+-	node->open++;
+ 	ret = 0;
+ 
+ unlock:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0226-media-i2c-tc358743-Fix-fallthrough-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0226-media-i2c-tc358743-Fix-fallthrough-warning.patch
new file mode 100644
index 0000000000..23d24ea415
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0226-media-i2c-tc358743-Fix-fallthrough-warning.patch
@@ -0,0 +1,20 @@
+From 5ea8f9ab70ee006b93836d0351ea8d502d29fa4e Mon Sep 17 00:00:00 2001
+From: Jacko Dirks <jdirks.linuxdev@gmail.com>
+Date: Tue, 5 May 2020 14:28:14 +0200
+Subject: [PATCH] media: i2c: tc358743: Fix fallthrough warning
+
+Signed-off-by: Jacko Dirks <jdirks.linuxdev@gmail.com>
+---
+ drivers/media/i2c/tc358743.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -2006,6 +2006,7 @@ static int tc358743_probe_of(struct tc35
+ 	switch (bps_pr_lane) {
+ 	default:
+ 		dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane);
++		/* fall through */
+ 	case 594000000U:
+ 		state->pdata.lineinitcnt = 0xe80;
+ 		state->pdata.lptxtimecnt = 0x003;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0227-media-bcm2835-unicam-Fix-uninitialized-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0227-media-bcm2835-unicam-Fix-uninitialized-warning.patch
new file mode 100644
index 0000000000..30404168e2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0227-media-bcm2835-unicam-Fix-uninitialized-warning.patch
@@ -0,0 +1,21 @@
+From 9daa9e4fe269c5b1fbdeee4e8219ac204b84c72c Mon Sep 17 00:00:00 2001
+From: Jacko Dirks <jdirks.linuxdev@gmail.com>
+Date: Tue, 5 May 2020 14:33:31 +0200
+Subject: [PATCH] media: bcm2835: unicam: Fix uninitialized warning
+
+Signed-off-by: Jacko Dirks <jdirks.linuxdev@gmail.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1001,7 +1001,7 @@ const struct unicam_fmt *get_first_suppo
+ {
+ 	struct v4l2_subdev_mbus_code_enum mbus_code;
+ 	const struct unicam_fmt *fmt = NULL;
+-	int ret;
++	int ret = 0;
+ 	int j;
+ 
+ 	for (j = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++j) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0228-video-bcm2708_fb-Disable-FB-if-no-displays-found.patch b/target/linux/bcm27xx/patches-5.15/950-0228-video-bcm2708_fb-Disable-FB-if-no-displays-found.patch
new file mode 100644
index 0000000000..558340b306
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0228-video-bcm2708_fb-Disable-FB-if-no-displays-found.patch
@@ -0,0 +1,34 @@
+From aef696eeab7a0a8122e9da3021b4310674539bb9 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 5 May 2020 19:45:41 +0100
+Subject: [PATCH] video: bcm2708_fb: Disable FB if no displays found
+
+If the firmware hasn't detected a display, the driver would assume
+one display was available, but because it had failed to retrieve the
+display size it would try to allocate a zero-sized buffer.
+
+Avoid the allocation failure by bailing out early if no display is
+found.
+
+See: https://github.com/raspberrypi/linux/issues/3598
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/video/fbdev/bcm2708_fb.c | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+--- a/drivers/video/fbdev/bcm2708_fb.c
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -1092,10 +1092,9 @@ static int bcm2708_fb_probe(struct platf
+ 	 * set one display
+ 	 */
+ 	if (ret || num_displays == 0) {
+-		num_displays = 1;
+ 		dev_err(&dev->dev,
+-			"Unable to determine number of FB's. Assuming 1\n");
+-		ret = 0;
++			"Unable to determine number of FBs. Disabling driver.\n");
++		return -ENOENT;
+ 	} else {
+ 		fbdev->firmware_supports_multifb = 1;
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0229-dt-bindings-media-i2c-Add-IMX477-CMOS-sensor-binding.patch b/target/linux/bcm27xx/patches-5.15/950-0229-dt-bindings-media-i2c-Add-IMX477-CMOS-sensor-binding.patch
new file mode 100644
index 0000000000..5e81435103
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0229-dt-bindings-media-i2c-Add-IMX477-CMOS-sensor-binding.patch
@@ -0,0 +1,130 @@
+From d46001f333424af540e02d2a19c11205d40a11f3 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 7 May 2020 15:50:54 +0100
+Subject: [PATCH] dt-bindings: media: i2c: Add IMX477 CMOS sensor
+ binding
+
+Add YAML device tree binding for IMX477 CMOS image sensor.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../devicetree/bindings/media/i2c/imx477.yaml | 113 ++++++++++++++++++
+ 1 file changed, 113 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/i2c/imx477.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/i2c/imx477.yaml
+@@ -0,0 +1,113 @@
++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/media/i2c/imx477.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Sony 1/2.3-Inch 12Mpixel CMOS Digital Image Sensor
++
++maintainers:
++  - Naushir Patuck <naush@raspberypi.com>
++
++description: |-
++  The Sony IMX477 is a 1/2.3-inch CMOS active pixel digital image sensor
++  with an active array size of 4056H x 3040V. It is programmable through
++  I2C interface. The I2C address is fixed to 0x1A as per sensor data sheet.
++  Image data is sent through MIPI CSI-2, which is configured as either 2 or
++  4 data lanes.
++
++properties:
++  compatible:
++    const: sony,imx477
++
++  reg:
++    description: I2C device address
++    maxItems: 1
++
++  clocks:
++    maxItems: 1
++
++  VDIG-supply:
++    description:
++      Digital I/O voltage supply, 1.05 volts
++
++  VANA-supply:
++    description:
++      Analog voltage supply, 2.8 volts
++
++  VDDL-supply:
++    description:
++      Digital core voltage supply, 1.8 volts
++
++  reset-gpios:
++    description: |-
++      Reference to the GPIO connected to the xclr pin, if any.
++      Must be released (set high) after all all supplies and INCK are applied.
++
++  # See ../video-interfaces.txt for more details
++  port:
++    type: object
++    properties:
++      endpoint:
++        type: object
++        properties:
++          data-lanes:
++            description: |-
++              The sensor supports either two-lane, or four-lane operation.
++              For two-lane operation the property must be set to <1 2>.
++            items:
++              - const: 1
++              - const: 2
++
++          clock-noncontinuous:
++            type: boolean
++            description: |-
++              MIPI CSI-2 clock is non-continuous if this property is present,
++              otherwise it's continuous.
++
++          link-frequencies:
++            allOf:
++              - $ref: /schemas/types.yaml#/definitions/uint64-array
++            description:
++              Allowed data bus frequencies.
++
++        required:
++          - link-frequencies
++
++required:
++  - compatible
++  - reg
++  - clocks
++  - VANA-supply
++  - VDIG-supply
++  - VDDL-supply
++  - port
++
++additionalProperties: false
++
++examples:
++  - |
++    i2c0 {
++        #address-cells = <1>;
++        #size-cells = <0>;
++
++        imx477: sensor@10 {
++            compatible = "sony,imx477";
++            reg = <0x1a>;
++            clocks = <&imx477_clk>;
++            VANA-supply = <&imx477_vana>;   /* 2.8v */
++            VDIG-supply = <&imx477_vdig>;   /* 1.05v */
++            VDDL-supply = <&imx477_vddl>;   /* 1.8v */
++
++            port {
++                imx477_0: endpoint {
++                    remote-endpoint = <&csi1_ep>;
++                    data-lanes = <1 2>;
++                    clock-noncontinuous;
++                    link-frequencies = /bits/ 64 <450000000>;
++                };
++            };
++        };
++    };
++
++...
diff --git a/target/linux/bcm27xx/patches-5.15/950-0230-media-bcm2835-unicam-Always-service-interrupts.patch b/target/linux/bcm27xx/patches-5.15/950-0230-media-bcm2835-unicam-Always-service-interrupts.patch
new file mode 100644
index 0000000000..a941d82585
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0230-media-bcm2835-unicam-Always-service-interrupts.patch
@@ -0,0 +1,51 @@
+From 04d21a5b2bbfee3b0a09c72ea5c11cfef10b08c1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 13 May 2020 18:28:27 +0100
+Subject: [PATCH] media: bcm2835-unicam: Always service interrupts
+
+From when bringing up the driver, there was a check in the isr
+to ignore interrupts (claiming them handled) should the driver
+not be streaming.
+
+The VPU now will not register a camera driver if it finds a
+CSI2 node enabled in device tree, therefore this flawed check is
+redundant.
+
+https://github.com/raspberrypi/linux/issues/3602
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 15 ---------------
+ 1 file changed, 15 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -766,12 +766,6 @@ static int unicam_all_nodes_streaming(st
+ 	return ret;
+ }
+ 
+-static int unicam_all_nodes_disabled(struct unicam_device *dev)
+-{
+-	return !dev->node[IMAGE_PAD].streaming &&
+-	       !dev->node[METADATA_PAD].streaming;
+-}
+-
+ static void unicam_queue_event_sof(struct unicam_device *unicam)
+ {
+ 	struct v4l2_event event = {
+@@ -801,15 +795,6 @@ static irqreturn_t unicam_isr(int irq, v
+ 	u64 ts;
+ 	int i;
+ 
+-	/*
+-	 * Don't service interrupts if not streaming.
+-	 * Avoids issues if the VPU should enable the
+-	 * peripheral without the kernel knowing (that
+-	 * shouldn't happen, but causes issues if it does).
+-	 */
+-	if (unicam_all_nodes_disabled(unicam))
+-		return IRQ_HANDLED;
+-
+ 	sta = reg_read(cfg, UNICAM_STA);
+ 	/* Write value back to clear the interrupts */
+ 	reg_write(cfg, UNICAM_STA, sta);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0231-sc16is7xx-Fix-for-hardware-flow-control.patch b/target/linux/bcm27xx/patches-5.15/950-0231-sc16is7xx-Fix-for-hardware-flow-control.patch
new file mode 100644
index 0000000000..37bea70db7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0231-sc16is7xx-Fix-for-hardware-flow-control.patch
@@ -0,0 +1,70 @@
+From e37d08d5cc0eece55a886f52ef35ac148acabe08 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 13 May 2020 20:10:15 +0100
+Subject: [PATCH] sc16is7xx: Fix for hardware flow control
+
+The SC16IS7XX hardware flow control is mishandled by the driver in
+a number of ways:
+
+  1. The set_baud method accidentally clears it when setting EFR bit.
+  2. Even though hardware flow control is enabled, it isn't indicated
+     back to the serial framework.
+  3. Applying the flow control clears the EFR bit.
+  4. The CTS support is not indicated in the return from
+     sc16is7xx_get_mctrl.
+
+Address all of those issues using a mixture of patches found on the
+linked pages.
+
+See: https://github.com/raspberrypi/linux/issues/2542
+See: https://www.spinics.net/lists/linux-serial/msg21794.html
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/tty/serial/sc16is7xx.c | 14 ++++++++++----
+ 1 file changed, 10 insertions(+), 4 deletions(-)
+
+--- a/drivers/tty/serial/sc16is7xx.c
++++ b/drivers/tty/serial/sc16is7xx.c
+@@ -523,8 +523,9 @@ static int sc16is7xx_set_baud(struct uar
+ 
+ 	/* Enable enhanced features */
+ 	regcache_cache_bypass(s->regmap, true);
+-	sc16is7xx_port_write(port, SC16IS7XX_EFR_REG,
+-			     SC16IS7XX_EFR_ENABLE_BIT);
++	sc16is7xx_port_update(port, SC16IS7XX_EFR_REG,
++			      SC16IS7XX_EFR_ENABLE_BIT,
++			      SC16IS7XX_EFR_ENABLE_BIT);
+ 	regcache_cache_bypass(s->regmap, false);
+ 
+ 	/* Put LCR back to the normal mode */
+@@ -842,7 +843,7 @@ static unsigned int sc16is7xx_get_mctrl(
+ 	/* DCD and DSR are not wired and CTS/RTS is handled automatically
+ 	 * so just indicate DSR and CAR asserted
+ 	 */
+-	return TIOCM_DSR | TIOCM_CAR;
++	return TIOCM_DSR | TIOCM_CAR | TIOCM_RI | TIOCM_CTS;
+ }
+ 
+ static void sc16is7xx_set_mctrl(struct uart_port *port, unsigned int mctrl)
+@@ -929,14 +930,19 @@ static void sc16is7xx_set_termios(struct
+ 	regcache_cache_bypass(s->regmap, true);
+ 	sc16is7xx_port_write(port, SC16IS7XX_XON1_REG, termios->c_cc[VSTART]);
+ 	sc16is7xx_port_write(port, SC16IS7XX_XOFF1_REG, termios->c_cc[VSTOP]);
+-	if (termios->c_cflag & CRTSCTS)
++	if (termios->c_cflag & CRTSCTS) {
+ 		flow |= SC16IS7XX_EFR_AUTOCTS_BIT |
+ 			SC16IS7XX_EFR_AUTORTS_BIT;
++		port->status |= UPSTAT_AUTOCTS;
++	};
+ 	if (termios->c_iflag & IXON)
+ 		flow |= SC16IS7XX_EFR_SWFLOW3_BIT;
+ 	if (termios->c_iflag & IXOFF)
+ 		flow |= SC16IS7XX_EFR_SWFLOW1_BIT;
+ 
++	/* Always set enable enhanced */
++	flow |= SC16IS7XX_EFR_ENABLE_BIT;
++
+ 	sc16is7xx_port_write(port, SC16IS7XX_EFR_REG, flow);
+ 	regcache_cache_bypass(s->regmap, false);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0232-staging-vc04_services-mmal-vchiq-Update-parameters-l.patch b/target/linux/bcm27xx/patches-5.15/950-0232-staging-vc04_services-mmal-vchiq-Update-parameters-l.patch
new file mode 100644
index 0000000000..6b261aa055
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0232-staging-vc04_services-mmal-vchiq-Update-parameters-l.patch
@@ -0,0 +1,28 @@
+From ed1ef1c795b53d03ef5d50bc27840b8ce069e16e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 15 May 2020 13:42:10 +0100
+Subject: [PATCH] staging: vc04_services: mmal-vchiq: Update parameters
+ list
+
+Adds in a couple of new MMAL parameter defines.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -612,6 +612,12 @@ enum mmal_parameter_video_type {
+ 
+ 	/**< Takes a @ref MMAL_PARAMETER_UINT32_T */
+ 	MMAL_PARAMETER_VIDEO_DROPPABLE_PFRAME_LENGTH,
++
++	/**< Take a @ref MMAL_PARAMETER_VIDEO_STALL_T */
++	MMAL_PARAMETER_VIDEO_STALL_THRESHOLD,
++
++	/**< Take a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
+ };
+ 
+ /** Valid mirror modes */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0233-staging-vc04_services-bcm2835-camera-Request-headers.patch b/target/linux/bcm27xx/patches-5.15/950-0233-staging-vc04_services-bcm2835-camera-Request-headers.patch
new file mode 100644
index 0000000000..ba1c759bb4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0233-staging-vc04_services-bcm2835-camera-Request-headers.patch
@@ -0,0 +1,30 @@
+From 275ce8667a725d37a22b726fbd64a785243b6d9a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 15 May 2020 13:48:59 +0100
+Subject: [PATCH] staging:vc04_services: bcm2835-camera: Request
+ headers with I-frame
+
+V4L2 wishes to have the codec header bytes in the same buffer as the
+first encoded frame, so it does become 1-in 1-out for encoding.
+The firmware now has an option to do this, so enable it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-camera/bcm2835-camera.c   | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -1734,6 +1734,12 @@ static int mmal_init(struct bm2835_mmal_
+ 					      MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
+ 					      &enable,
+ 					      sizeof(enable));
++
++		/* Enable inserting headers into the first frame */
++		vchiq_mmal_port_parameter_set(dev->instance,
++					      &dev->component[COMP_VIDEO_ENCODE]->control,
++					      MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
++					      &enable, sizeof(enable));
+ 	}
+ 	ret = bm2835_mmal_set_all_camera_controls(dev);
+ 	if (ret < 0) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0234-media-bcm2835-unicam-Retain-packing-information-on-G.patch b/target/linux/bcm27xx/patches-5.15/950-0234-media-bcm2835-unicam-Retain-packing-information-on-G.patch
new file mode 100644
index 0000000000..7c16d07946
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0234-media-bcm2835-unicam-Retain-packing-information-on-G.patch
@@ -0,0 +1,48 @@
+From ee86fb1c9370c0397b63261e54742e0031991f96 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 19 May 2020 11:46:47 +0100
+Subject: [PATCH] media: bcm2835-unicam: Retain packing information on
+ G_FMT
+
+The change to retrieve the pixel format always on g_fmt didn't
+check whether the native or unpacked version of the format
+had been requested, and always returned the packed one.
+Correct this so that the packing setting is retained whereever
+possible.
+
+Fixes "9d59e89 media: bcm2835-unicam: Re-fetch mbus code from subdev
+on a g_fmt call"
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 19 +++++++++++++++++--
+ 1 file changed, 17 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -974,8 +974,23 @@ static int unicam_g_fmt_vid_cap(struct f
+ 	if (!fmt)
+ 		return -EINVAL;
+ 
+-	node->fmt = fmt;
+-	node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++	if (node->fmt != fmt) {
++		/*
++		 * The sensor format has changed so the pixelformat needs to
++		 * be updated. Try and retain the packed/unpacked choice if
++		 * at all possible.
++		 */
++		if (node->fmt->repacked_fourcc ==
++						node->v_fmt.fmt.pix.pixelformat)
++			/* Using the repacked format */
++			node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
++		else
++			/* Using the native format */
++			node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++
++		node->fmt = fmt;
++	}
++
+ 	*f = node->v_fmt;
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0235-zswap-Defer-zswap-initialisation.patch b/target/linux/bcm27xx/patches-5.15/950-0235-zswap-Defer-zswap-initialisation.patch
new file mode 100644
index 0000000000..d9619f1c1d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0235-zswap-Defer-zswap-initialisation.patch
@@ -0,0 +1,125 @@
+From 42487c7c83a14fd00b69038932baf6373d422b59 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 5 May 2020 15:23:32 +0100
+Subject: [PATCH] zswap: Defer zswap initialisation
+
+Enabling zswap support in the kernel configuration costs about 1.5MB
+of RAM, even when zswap is not enabled at runtime. This cost can be
+reduced significantly by deferring initialisation (including pool
+creation) until the "enabled" parameter is set to true. There is a
+small cost to this in that some initialisation code has to remain in
+memory after the init phase, just in case they are needed later,
+but the total size increase is negligible.
+
+See: https://github.com/raspberrypi/linux/pull/3432
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ mm/zswap.c | 53 +++++++++++++++++++++++++++++------------------------
+ 1 file changed, 29 insertions(+), 24 deletions(-)
+
+--- a/mm/zswap.c
++++ b/mm/zswap.c
+@@ -648,8 +648,9 @@ error:
+ 	return NULL;
+ }
+ 
+-static __init struct zswap_pool *__zswap_pool_create_fallback(void)
++static bool zswap_try_pool_create(void)
+ {
++	struct zswap_pool *pool;
+ 	bool has_comp, has_zpool;
+ 
+ 	has_comp = crypto_has_acomp(zswap_compressor, 0, 0);
+@@ -685,9 +686,21 @@ static __init struct zswap_pool *__zswap
+ 	}
+ 
+ 	if (!has_comp || !has_zpool)
+-		return NULL;
++		return false;
++
++	pool = zswap_pool_create(zswap_zpool_type, zswap_compressor);
+ 
+-	return zswap_pool_create(zswap_zpool_type, zswap_compressor);
++	if (pool) {
++		pr_info("loaded using pool %s/%s\n", pool->tfm_name,
++			zpool_get_type(pool->zpool));
++		list_add(&pool->list, &zswap_pools);
++		zswap_has_pool = true;
++	} else {
++		pr_err("pool creation failed\n");
++		zswap_enabled = false;
++	}
++
++	return zswap_enabled;
+ }
+ 
+ static void zswap_pool_destroy(struct zswap_pool *pool)
+@@ -860,16 +873,19 @@ static int zswap_zpool_param_set(const c
+ static int zswap_enabled_param_set(const char *val,
+ 				   const struct kernel_param *kp)
+ {
++	int ret;
++
+ 	if (zswap_init_failed) {
+ 		pr_err("can't enable, initialization failed\n");
+ 		return -ENODEV;
+ 	}
+-	if (!zswap_has_pool && zswap_init_started) {
+-		pr_err("can't enable, no pool configured\n");
+-		return -ENODEV;
+-	}
+ 
+-	return param_set_bool(val, kp);
++	ret = param_set_bool(val, kp);
++	if (!ret && zswap_enabled && zswap_init_started && !zswap_has_pool)
++		if (!zswap_try_pool_create())
++			ret = -ENODEV;
++
++	return ret;
+ }
+ 
+ /*********************************
+@@ -1436,7 +1452,6 @@ static int __init zswap_debugfs_init(voi
+ **********************************/
+ static int __init init_zswap(void)
+ {
+-	struct zswap_pool *pool;
+ 	int ret;
+ 
+ 	zswap_init_started = true;
+@@ -1460,29 +1475,19 @@ static int __init init_zswap(void)
+ 	if (ret)
+ 		goto hp_fail;
+ 
+-	pool = __zswap_pool_create_fallback();
+-	if (pool) {
+-		pr_info("loaded using pool %s/%s\n", pool->tfm_name,
+-			zpool_get_type(pool->zpool));
+-		list_add(&pool->list, &zswap_pools);
+-		zswap_has_pool = true;
+-	} else {
+-		pr_err("pool creation failed\n");
+-		zswap_enabled = false;
+-	}
+-
+ 	shrink_wq = create_workqueue("zswap-shrink");
+ 	if (!shrink_wq)
+-		goto fallback_fail;
++		goto hp_fail;
+ 
+ 	frontswap_register_ops(&zswap_frontswap_ops);
+ 	if (zswap_debugfs_init())
+ 		pr_warn("debugfs initialization failed\n");
++
++	if (zswap_enabled)
++		zswap_try_pool_create();
++
+ 	return 0;
+ 
+-fallback_fail:
+-	if (pool)
+-		zswap_pool_destroy(pool);
+ hp_fail:
+ 	cpuhp_remove_state(CPUHP_MM_ZSWP_MEM_PREPARE);
+ dstmem_fail:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0236-media-bcm2835-unicam-change-minimum-number-of-vb2_qu.patch b/target/linux/bcm27xx/patches-5.15/950-0236-media-bcm2835-unicam-change-minimum-number-of-vb2_qu.patch
new file mode 100644
index 0000000000..a921e0797d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0236-media-bcm2835-unicam-change-minimum-number-of-vb2_qu.patch
@@ -0,0 +1,28 @@
+From a516ca77e73d369486803865e06a6854b6f0dd97 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 28 May 2020 11:09:48 +0100
+Subject: [PATCH] media: bcm2835-unicam: change minimum number of
+ vb2_queue buffers to 1
+
+Since the unicam driver was modified to write to a dummy buffer when no
+user-supplied buffer is available, it can now write to and return a
+buffer even when there's only a single one. Enable this by changing the
+min_buffers_needed in the vb2_queue; it will be useful for enabling
+still captures without allocating more memory than absolutely necessary.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2404,7 +2404,7 @@ static int register_node(struct unicam_d
+ 	q->buf_struct_size = sizeof(struct unicam_buffer);
+ 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ 	q->lock = &node->lock;
+-	q->min_buffers_needed = 2;
++	q->min_buffers_needed = 1;
+ 	q->dev = &unicam->pdev->dev;
+ 
+ 	ret = vb2_queue_init(q);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0237-snd_bcm2835-disable-HDMI-audio-when-vc4-is-used-3640.patch b/target/linux/bcm27xx/patches-5.15/950-0237-snd_bcm2835-disable-HDMI-audio-when-vc4-is-used-3640.patch
new file mode 100644
index 0000000000..6277667da6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0237-snd_bcm2835-disable-HDMI-audio-when-vc4-is-used-3640.patch
@@ -0,0 +1,33 @@
+From 3b5412d506f5b7f2d947346ccdda8b67c9902576 Mon Sep 17 00:00:00 2001
+From: Hristo Venev <hristo@venev.name>
+Date: Fri, 5 Jun 2020 09:22:49 +0000
+Subject: [PATCH] snd_bcm2835: disable HDMI audio when vc4 is used
+ (#3640)
+
+Things don't work too well when both the vc4 driver and the firmware
+driver are trying to control the same audio output:
+
+[  763.569406] bcm2835_audio bcm2835_audio: vchi message timeout, msg=5
+
+Hence, when the vc4 HDMI driver is used, let it control audio. This is done
+by introducing a new device tree property to the audio node, and
+extending the vc4-kms-v3d overlays to set it appropriately.
+
+Signed-off-by: Hristo Venev <hristo@venev.name>
+---
+ drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -381,7 +381,9 @@ static int snd_bcm2835_alsa_probe(struct
+ 	}
+ 
+ 	if (!enable_compat_alsa) {
+-		set_hdmi_enables(dev);
++		if (!of_property_read_bool(dev->of_node, "brcm,disable-hdmi"))
++			set_hdmi_enables(dev);
++
+ 		// In this mode, always enable analog output
+ 		enable_headphones = true;
+ 	} else {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0238-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch b/target/linux/bcm27xx/patches-5.15/950-0238-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch
new file mode 100644
index 0000000000..ef43c8c73a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0238-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch
@@ -0,0 +1,50 @@
+From dd537b547de5461ae7fc2064e5037404bcb12f9c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 24 Apr 2018 14:42:27 +0100
+Subject: [PATCH] gpiolib: Don't prevent IRQ usage of output GPIOs
+
+Upstream Linux deems using output GPIOs to generate IRQs as a bogus
+use case, even though the BCM2835 GPIO controller is capable of doing
+so. A number of users would like to make use of this facility, so
+disable the checks.
+
+See: https://github.com/raspberrypi/linux/issues/2527
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/gpio/gpiolib.c | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpio/gpiolib.c
++++ b/drivers/gpio/gpiolib.c
+@@ -52,6 +52,8 @@
+ #define	extra_checks	0
+ #endif
+ 
++#define dont_test_bit(b,d) (0)
++
+ /* Device and char device-related information */
+ static DEFINE_IDA(gpio_ida);
+ static dev_t gpio_devt;
+@@ -2361,8 +2363,8 @@ int gpiod_direction_output(struct gpio_d
+ 		value = !!value;
+ 
+ 	/* GPIOs used for enabled IRQs shall not be set as output */
+-	if (test_bit(FLAG_USED_AS_IRQ, &desc->flags) &&
+-	    test_bit(FLAG_IRQ_IS_ENABLED, &desc->flags)) {
++	if (dont_test_bit(FLAG_USED_AS_IRQ, &desc->flags) &&
++	    dont_test_bit(FLAG_IRQ_IS_ENABLED, &desc->flags)) {
+ 		gpiod_err(desc,
+ 			  "%s: tried to set a GPIO tied to an IRQ as output\n",
+ 			  __func__);
+@@ -3180,8 +3182,8 @@ int gpiochip_lock_as_irq(struct gpio_chi
+ 	}
+ 
+ 	/* To be valid for IRQ the line needs to be input or open drain */
+-	if (test_bit(FLAG_IS_OUT, &desc->flags) &&
+-	    !test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
++	if (dont_test_bit(FLAG_IS_OUT, &desc->flags) &&
++	    !dont_test_bit(FLAG_OPEN_DRAIN, &desc->flags)) {
+ 		chip_err(gc,
+ 			 "%s: tried to flag a GPIO set as output for IRQ\n",
+ 			 __func__);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0239-PCI-brcmstb-Add-DT-property-to-control-L1SS.patch b/target/linux/bcm27xx/patches-5.15/950-0239-PCI-brcmstb-Add-DT-property-to-control-L1SS.patch
new file mode 100644
index 0000000000..825433bb48
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0239-PCI-brcmstb-Add-DT-property-to-control-L1SS.patch
@@ -0,0 +1,79 @@
+From 7d8f187f47cd5583c3c04b3dfb281c738443198a Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 11 Jun 2020 09:57:03 +0100
+Subject: [PATCH] PCI: brcmstb: Add DT property to control L1SS
+
+The BRCM PCIe block has controls to enable control of the CLKREQ#
+signal by the L1SS, and to gate the refclk with the CLKREQ# input.
+These controls are mutually exclusive - the upstream code sets the
+latter, but some use cases require the former.
+
+Add a Device Tree property - brcm,enable-l1ss - to switch to the
+L1SS configuration.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/pci/controller/pcie-brcmstb.c | 30 ++++++++++++++++++++-------
+ 1 file changed, 23 insertions(+), 7 deletions(-)
+
+--- a/drivers/pci/controller/pcie-brcmstb.c
++++ b/drivers/pci/controller/pcie-brcmstb.c
+@@ -116,8 +116,9 @@
+ 		PCIE_MISC_CPU_2_PCIE_MEM_WIN0_LIMIT_HI + ((win) * 8)
+ 
+ #define PCIE_MISC_HARD_PCIE_HARD_DEBUG					0x4204
+-#define  PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK	0x2
+-#define  PCIE_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_MASK		0x08000000
++#define  PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK	BIT(1)
++#define  PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_L1SS_ENABLE_MASK		BIT(21)
++#define  PCIE_MISC_HARD_PCIE_HARD_DEBUG_SERDES_IDDQ_MASK		BIT(27)
+ 
+ 
+ #define PCIE_INTR2_CPU_BASE		0x4300
+@@ -283,6 +284,7 @@ struct brcm_pcie {
+ 	struct clk		*clk;
+ 	struct device_node	*np;
+ 	bool			ssc;
++	bool			l1ss;
+ 	int			gen;
+ 	u64			msi_target_addr;
+ 	struct brcm_msi		*msi;
+@@ -1033,12 +1035,25 @@ static int brcm_pcie_setup(struct brcm_p
+ 		PCIE_RC_CFG_VENDOR_VENDOR_SPECIFIC_REG1_ENDIAN_MODE_BAR2_MASK);
+ 	writel(tmp, base + PCIE_RC_CFG_VENDOR_VENDOR_SPECIFIC_REG1);
+ 
+-	/*
+-	 * Refclk from RC should be gated with CLKREQ# input when ASPM L0s,L1
+-	 * is enabled => setting the CLKREQ_DEBUG_ENABLE field to 1.
+-	 */
+ 	tmp = readl(base + PCIE_MISC_HARD_PCIE_HARD_DEBUG);
+-	tmp |= PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK;
++	if (pcie->l1ss) {
++		/*
++		 * Enable CLKREQ# signalling include L1 Substate control of
++		 * the CLKREQ# signal and the external reference clock buffer.
++		 * meet requirement for Endpoints that require CLKREQ#
++		 * assertion to clock active within 400ns.
++		 */
++		tmp &= ~PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK;
++		tmp |= PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_L1SS_ENABLE_MASK;
++	} else {
++		/*
++		 * Refclk from RC should be gated with CLKREQ# input when
++		 * ASPM L0s,L1 is enabled => setting the CLKREQ_DEBUG_ENABLE
++		 * field to 1.
++		 */
++		tmp &= ~PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_L1SS_ENABLE_MASK;
++		tmp |= PCIE_MISC_HARD_PCIE_HARD_DEBUG_CLKREQ_DEBUG_ENABLE_MASK;
++	}
+ 	writel(tmp, base + PCIE_MISC_HARD_PCIE_HARD_DEBUG);
+ 
+ 	return 0;
+@@ -1267,6 +1282,7 @@ static int brcm_pcie_probe(struct platfo
+ 	pcie->gen = (ret < 0) ? 0 : ret;
+ 
+ 	pcie->ssc = of_property_read_bool(np, "brcm,enable-ssc");
++	pcie->l1ss = of_property_read_bool(np, "brcm,enable-l1ss");
+ 
+ 	ret = clk_prepare_enable(pcie->clk);
+ 	if (ret) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0240-media-irs1125-Using-i2c_transfer-for-ic2-reads.patch b/target/linux/bcm27xx/patches-5.15/950-0240-media-irs1125-Using-i2c_transfer-for-ic2-reads.patch
new file mode 100644
index 0000000000..9b6aec454f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0240-media-irs1125-Using-i2c_transfer-for-ic2-reads.patch
@@ -0,0 +1,65 @@
+From 26c02ccf6302ec39a6fb344de0fe2d6cbda5d655 Mon Sep 17 00:00:00 2001
+From: Markus Proeller <markus.proeller@pieye.org>
+Date: Tue, 16 Jun 2020 13:24:31 +0200
+Subject: [PATCH] media: irs1125: Using i2c_transfer for ic2 reads
+
+Reading data over i2c is done by using i2c_transfer to ensure that this
+operation can't be interrupted.
+
+Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
+---
+ drivers/media/i2c/irs1125.c | 37 ++++++++++++++++++++++---------------
+ 1 file changed, 22 insertions(+), 15 deletions(-)
+
+--- a/drivers/media/i2c/irs1125.c
++++ b/drivers/media/i2c/irs1125.c
+@@ -248,27 +248,34 @@ static int irs1125_write(struct v4l2_sub
+ 
+ static int irs1125_read(struct v4l2_subdev *sd, u16 reg, u16 *val)
+ {
+-	int ret;
+-	unsigned char data_w[2] = { reg >> 8, reg & 0xff };
+-	char rdval[2];
+-
+ 	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	struct i2c_msg msgs[2];
++	u8 addr_buf[2] = { reg >> 8, reg & 0xff };
++	u8 data_buf[2] = { 0, };
++	int ret;
+ 
+-	ret = i2c_master_send(client, data_w, 2);
+-	if (ret < 0) {
+-		dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
+-			__func__, reg);
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = ARRAY_SIZE(addr_buf);
++	msgs[0].buf = addr_buf;
++
++	/* Read data from register */
++	msgs[1].addr = client->addr;
++	msgs[1].flags = I2C_M_RD;
++	msgs[1].len = 2;
++	msgs[1].buf = data_buf;
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs)) {
++		if (ret >= 0)
++			ret = -EIO;
+ 		return ret;
+ 	}
+ 
+-	ret = i2c_master_recv(client, rdval, 2);
+-	if (ret < 0)
+-		dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
+-			__func__, reg);
+-
+-	*val = rdval[1] | (rdval[0] << 8);
++	*val = data_buf[1] | (data_buf[0] << 8);
+ 
+-	return ret;
++	return 0;
+ }
+ 
+ static int irs1125_write_array(struct v4l2_subdev *sd,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0241-media-irs1125-Refactoring-and-debug-messages.patch b/target/linux/bcm27xx/patches-5.15/950-0241-media-irs1125-Refactoring-and-debug-messages.patch
new file mode 100644
index 0000000000..b657c20b9e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0241-media-irs1125-Refactoring-and-debug-messages.patch
@@ -0,0 +1,123 @@
+From 49b81417f89c97f2df2ab79ce6eba61bf6c3cc32 Mon Sep 17 00:00:00 2001
+From: Markus Proeller <markus.proeller@pieye.org>
+Date: Tue, 16 Jun 2020 13:27:42 +0200
+Subject: [PATCH] media: irs1125: Refactoring and debug messages
+
+Changed some variable names to comply with checkpatch --strict mode.
+Debug messages added.
+
+Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
+---
+ drivers/media/i2c/irs1125.c | 36 ++++++++++++++++++++----------------
+ 1 file changed, 20 insertions(+), 16 deletions(-)
+
+--- a/drivers/media/i2c/irs1125.c
++++ b/drivers/media/i2c/irs1125.c
+@@ -15,6 +15,7 @@
+ #include "irs1125.h"
+ #include <linux/clk.h>
+ #include <linux/delay.h>
++#include <linux/firmware.h>
+ #include <linux/gpio/consumer.h>
+ #include <linux/i2c.h>
+ #include <linux/init.h>
+@@ -22,13 +23,13 @@
+ #include <linux/module.h>
+ #include <linux/of_graph.h>
+ #include <linux/slab.h>
++#include <linux/types.h>
+ #include <linux/videodev2.h>
+-#include <linux/firmware.h>
++#include <media/v4l2-ctrls.h>
+ #include <media/v4l2-device.h>
+ #include <media/v4l2-fwnode.h>
+ #include <media/v4l2-image-sizes.h>
+ #include <media/v4l2-mediabus.h>
+-#include <media/v4l2-ctrls.h>
+ 
+ #define CHECK_BIT(val, pos) ((val) & BIT(pos))
+ 
+@@ -38,18 +39,19 @@
+ 
+ #define IRS1125_ALTERNATE_FW "irs1125_af.bin"
+ 
+-#define IRS1125_REG_CSICFG       0xA882
+-#define IRS1125_REG_DESIGN_STEP	 0xB0AD
+-#define IRS1125_REG_EFUSEVAL2	 0xB09F
+-#define IRS1125_REG_EFUSEVAL3	 0xB0A0
+-#define IRS1125_REG_EFUSEVAL4	 0xB0A1
+-#define IRS1125_REG_DMEM_SHADOW	 0xC320
++#define IRS1125_REG_SAFE_RECONFIG	0xA850
++#define IRS1125_REG_CSICFG		0xA882
++#define IRS1125_REG_DESIGN_STEP		0xB0AD
++#define IRS1125_REG_EFUSEVAL2		0xB09F
++#define IRS1125_REG_EFUSEVAL3		0xB0A0
++#define IRS1125_REG_EFUSEVAL4		0xB0A1
++#define IRS1125_REG_DMEM_SHADOW		0xC320
+ 
+-#define IRS1125_DESIGN_STEP_EXPECTED 0x0a12
++#define IRS1125_DESIGN_STEP_EXPECTED	0x0a12
+ 
+ #define IRS1125_ROW_START_DEF		0
+ #define IRS1125_COLUMN_START_DEF	0
+-#define IRS1125_WINDOW_HEIGHT_DEF	 288
++#define IRS1125_WINDOW_HEIGHT_DEF	288
+ #define IRS1125_WINDOW_WIDTH_DEF	352
+ 
+ struct regval_list {
+@@ -87,7 +89,7 @@ static inline struct irs1125 *to_state(s
+ 	return container_of(sd, struct irs1125, sd);
+ }
+ 
+-static struct regval_list irs1125_26MHz[] = {
++static struct regval_list irs1125_26mhz[] = {
+ 	{0xB017, 0x0413},
+ 	{0xB086, 0x3535},
+ 	{0xB0AE, 0xEF02},
+@@ -153,7 +155,7 @@ static struct regval_list irs1125_26MHz[
+ 	{0xFFFF, 100}
+ };
+ 
+-static struct regval_list irs1125_seq_cfg[] = {
++static struct regval_list irs1125_seq_cfg_init[] = {
+ 	{0xC3A0, 0x823D},
+ 	{0xC3A1, 0xB13B},
+ 	{0xC3A2, 0x0313},
+@@ -243,6 +245,7 @@ static int irs1125_write(struct v4l2_sub
+ 		dev_err(&client->dev, "%s: i2c write error, reg: %x\n",
+ 			__func__, reg);
+ 
++	dev_dbg(&client->dev, "write addr 0x%04x, val 0x%04x\n", reg, val);
+ 	return ret;
+ }
+ 
+@@ -364,8 +367,8 @@ static int __sensor_init(struct v4l2_sub
+ 		cnt++;
+ 	}
+ 
+-	ret = irs1125_write_array(sd, irs1125_26MHz,
+-				  ARRAY_SIZE(irs1125_26MHz));
++	ret = irs1125_write_array(sd, irs1125_26mhz,
++				  ARRAY_SIZE(irs1125_26mhz));
+ 	if (ret < 0) {
+ 		dev_err(&client->dev, "write sensor default regs error\n");
+ 		return ret;
+@@ -415,8 +418,8 @@ static int __sensor_init(struct v4l2_sub
+ 	}
+ 	release_firmware(fw);
+ 
+-	ret = irs1125_write_array(sd, irs1125_seq_cfg,
+-				  ARRAY_SIZE(irs1125_seq_cfg));
++	ret = irs1125_write_array(sd, irs1125_seq_cfg_init,
++				  ARRAY_SIZE(irs1125_seq_cfg_init));
+ 	if (ret < 0) {
+ 		dev_err(&client->dev, "write default sequence failed\n");
+ 		return ret;
+@@ -1037,6 +1040,7 @@ static int irs1125_probe(struct i2c_clie
+ 	}
+ 
+ 	gpio_num = desc_to_gpio(sensor->reset);
++	dev_dbg(&client->dev, "reset on GPIO num %d\n", gpio_num);
+ 
+ 	mutex_init(&sensor->lock);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0242-media-irs1125-Atomic-access-to-imager-reconfiguratio.patch b/target/linux/bcm27xx/patches-5.15/950-0242-media-irs1125-Atomic-access-to-imager-reconfiguratio.patch
new file mode 100644
index 0000000000..4c050f1269
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0242-media-irs1125-Atomic-access-to-imager-reconfiguratio.patch
@@ -0,0 +1,381 @@
+From 5c7303b9232179fb528d458490e322c4d8779cb7 Mon Sep 17 00:00:00 2001
+From: Markus Proeller <markus.proeller@pieye.org>
+Date: Tue, 16 Jun 2020 13:31:36 +0200
+Subject: [PATCH] media: irs1125: Atomic access to imager
+ reconfiguration
+
+Instead of changing the exposure and framerate settings for all sequences,
+they can be changed for every sequence individually now. Therefore the
+IRS1125_CID_SAFE_RECONFIG ctrl has been removed and replaced by
+IRS1125_CID_SAFE_RECONFIG_S<seq_num>_EXPO and *_FRAME ctrls.
+
+The consistency check in the sequence ctrl IRS1125_CID_SEQ_CONFIG
+is removed.
+
+Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
+---
+ drivers/media/i2c/irs1125.c | 224 ++++++++++++++++++++++++------------
+ drivers/media/i2c/irs1125.h |  68 ++++++++---
+ 2 files changed, 204 insertions(+), 88 deletions(-)
+
+--- a/drivers/media/i2c/irs1125.c
++++ b/drivers/media/i2c/irs1125.c
+@@ -89,6 +89,52 @@ static inline struct irs1125 *to_state(s
+ 	return container_of(sd, struct irs1125, sd);
+ }
+ 
++static const char *expo_ctrl_names[IRS1125_NUM_SEQ_ENTRIES] = {
++	"safe reconfiguration of exposure of sequence 0",
++	"safe reconfiguration of exposure of sequence 1",
++	"safe reconfiguration of exposure of sequence 2",
++	"safe reconfiguration of exposure of sequence 3",
++	"safe reconfiguration of exposure of sequence 4",
++	"safe reconfiguration of exposure of sequence 5",
++	"safe reconfiguration of exposure of sequence 6",
++	"safe reconfiguration of exposure of sequence 7",
++	"safe reconfiguration of exposure of sequence 8",
++	"safe reconfiguration of exposure of sequence 9",
++	"safe reconfiguration of exposure of sequence 10",
++	"safe reconfiguration of exposure of sequence 11",
++	"safe reconfiguration of exposure of sequence 12",
++	"safe reconfiguration of exposure of sequence 13",
++	"safe reconfiguration of exposure of sequence 14",
++	"safe reconfiguration of exposure of sequence 15",
++	"safe reconfiguration of exposure of sequence 16",
++	"safe reconfiguration of exposure of sequence 17",
++	"safe reconfiguration of exposure of sequence 18",
++	"safe reconfiguration of exposure of sequence 19",
++};
++
++static const char *frame_ctrl_names[IRS1125_NUM_SEQ_ENTRIES] = {
++	"safe reconfiguration of framerate of sequence 0",
++	"safe reconfiguration of framerate of sequence 1",
++	"safe reconfiguration of framerate of sequence 2",
++	"safe reconfiguration of framerate of sequence 3",
++	"safe reconfiguration of framerate of sequence 4",
++	"safe reconfiguration of framerate of sequence 5",
++	"safe reconfiguration of framerate of sequence 6",
++	"safe reconfiguration of framerate of sequence 7",
++	"safe reconfiguration of framerate of sequence 8",
++	"safe reconfiguration of framerate of sequence 9",
++	"safe reconfiguration of framerate of sequence 10",
++	"safe reconfiguration of framerate of sequence 11",
++	"safe reconfiguration of framerate of sequence 12",
++	"safe reconfiguration of framerate of sequence 13",
++	"safe reconfiguration of framerate of sequence 14",
++	"safe reconfiguration of framerate of sequence 15",
++	"safe reconfiguration of framerate of sequence 16",
++	"safe reconfiguration of framerate of sequence 17",
++	"safe reconfiguration of framerate of sequence 18",
++	"safe reconfiguration of framerate of sequence 19",
++};
++
+ static struct regval_list irs1125_26mhz[] = {
+ 	{0xB017, 0x0413},
+ 	{0xB086, 0x3535},
+@@ -561,36 +607,57 @@ static int irs1125_s_ctrl(struct v4l2_ct
+ 	struct irs1125 *dev = container_of(ctrl->handler,
+ 					struct irs1125, ctrl_handler);
+ 	struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
+-	int err, i;
+ 	struct irs1125_mod_pll *mod_cur, *mod_new;
+-	struct irs1125_seq_cfg *cfg_cur, *cfg_new;
+ 	u16 addr, val;
+-
+-	err = 0;
++	int err = 0, i;
+ 
+ 	switch (ctrl->id) {
+-	case IRS1125_CID_SAFE_RECONFIG:
+-	{
+-		struct irs1125_illu *illu_cur, *illu_new;
+-
+-		illu_new = (struct irs1125_illu *)ctrl->p_new.p;
+-		illu_cur = (struct irs1125_illu *)ctrl->p_cur.p;
+-		for (i = 0; i < IRS1125_NUM_SEQ_ENTRIES; i++) {
+-			if (illu_cur[i].exposure != illu_new[i].exposure) {
+-				addr = 0xA850 + i * 2;
+-				val = illu_new[i].exposure;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (illu_cur[i].framerate != illu_new[i].framerate) {
+-				addr = 0xA851 + i * 2;
+-				val = illu_new[i].framerate;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-		}
++	case IRS1125_CID_SAFE_RECONFIG_S0_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S0_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S1_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S1_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S2_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S2_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S3_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S3_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S4_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S4_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S5_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S5_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S6_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S6_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S7_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S7_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S8_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S8_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S9_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S9_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S10_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S10_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S11_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S11_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S12_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S12_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S13_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S13_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S14_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S14_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S15_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S15_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S16_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S16_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S17_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S17_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S18_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S18_FRAME:
++	case IRS1125_CID_SAFE_RECONFIG_S19_EXPO:
++	case IRS1125_CID_SAFE_RECONFIG_S19_FRAME: {
++		unsigned int offset = ctrl->id -
++			IRS1125_CID_SAFE_RECONFIG_S0_EXPO;
++
++		err = irs1125_write(&dev->sd,
++				    IRS1125_REG_SAFE_RECONFIG + offset,
++				    ctrl->val);
+ 		break;
+ 	}
+ 	case IRS1125_CID_MOD_PLL:
+@@ -655,40 +722,40 @@ static int irs1125_s_ctrl(struct v4l2_ct
+ 			}
+ 		}
+ 		break;
+-	case IRS1125_CID_SEQ_CONFIG:
++	case IRS1125_CID_SEQ_CONFIG: {
++		struct irs1125_seq_cfg *cfg_new;
++
+ 		cfg_new = (struct irs1125_seq_cfg *)ctrl->p_new.p;
+-		cfg_cur = (struct irs1125_seq_cfg *)ctrl->p_cur.p;
+ 		for (i = 0; i < IRS1125_NUM_SEQ_ENTRIES; i++) {
+-			if (cfg_cur[i].exposure != cfg_new[i].exposure)	{
+-				addr = IRS1125_REG_DMEM_SHADOW + i * 4;
+-				val = cfg_new[i].exposure;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (cfg_cur[i].framerate != cfg_new[i].framerate) {
+-				addr = IRS1125_REG_DMEM_SHADOW + 1 + i * 4;
+-				val = cfg_new[i].framerate;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (cfg_cur[i].ps != cfg_new[i].ps) {
+-				addr = IRS1125_REG_DMEM_SHADOW + 2 + i * 4;
+-				val = cfg_new[i].ps;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (cfg_cur[i].pll != cfg_new[i].pll) {
+-				addr = IRS1125_REG_DMEM_SHADOW + 3 + i * 4;
+-				val = cfg_new[i].pll;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
++			unsigned int seq_offset = i * 4;
++			u16 addr, val;
++
++			addr = IRS1125_REG_DMEM_SHADOW + seq_offset;
++			val = cfg_new[i].exposure;
++			err = irs1125_write(&dev->sd, addr, val);
++			if (err < 0)
++				break;
++
++			addr = IRS1125_REG_DMEM_SHADOW + 1 + seq_offset;
++			val = cfg_new[i].framerate;
++			err = irs1125_write(&dev->sd, addr, val);
++			if (err < 0)
++				break;
++
++			addr = IRS1125_REG_DMEM_SHADOW + 2 + seq_offset;
++			val = cfg_new[i].ps;
++			err = irs1125_write(&dev->sd, addr, val);
++			if (err < 0)
++				break;
++
++			addr = IRS1125_REG_DMEM_SHADOW + 3 + seq_offset;
++			val = cfg_new[i].pll;
++			err = irs1125_write(&dev->sd, addr, val);
++			if (err < 0)
++				break;
+ 		}
+ 		break;
++	}
+ 	case IRS1125_CID_NUM_SEQS:
+ 		err = irs1125_write(&dev->sd, 0xA88D, ctrl->val - 1);
+ 		if (err >= 0)
+@@ -760,19 +827,6 @@ static const struct v4l2_ctrl_config irs
+ 			IRS1125_NUM_MOD_PLLS}
+ 	}, {
+ 		.ops = &irs1125_ctrl_ops,
+-		.id = IRS1125_CID_SAFE_RECONFIG,
+-		.name = "Change exposure and pause of single seq",
+-		.type = V4L2_CTRL_TYPE_U16,
+-		.flags = V4L2_CTRL_FLAG_HAS_PAYLOAD,
+-		.min = 0,
+-		.max = U16_MAX,
+-		.step = 1,
+-		.def = 0,
+-		.elem_size = sizeof(u16),
+-		.dims = {sizeof(struct irs1125_illu) / sizeof(u16),
+-			IRS1125_NUM_SEQ_ENTRIES}
+-	}, {
+-		.ops = &irs1125_ctrl_ops,
+ 		.id = IRS1125_CID_SEQ_CONFIG,
+ 		.name = "Change sequence settings",
+ 		.type = V4L2_CTRL_TYPE_U16,
+@@ -900,9 +954,16 @@ static int irs1125_ctrls_init(struct irs
+ {
+ 	struct v4l2_ctrl *ctrl;
+ 	int err, i;
+-	struct v4l2_ctrl_handler *hdl;
++	struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler;
++	struct v4l2_ctrl_config ctrl_cfg = {
++		.ops = &irs1125_ctrl_ops,
++		.type = V4L2_CTRL_TYPE_INTEGER,
++		.min = 0,
++		.max = U16_MAX,
++		.step = 1,
++		.def = 0x1000
++	};
+ 
+-	hdl = &sensor->ctrl_handler;
+ 	v4l2_ctrl_handler_init(hdl, ARRAY_SIZE(irs1125_custom_ctrls));
+ 
+ 	for (i = 0; i < ARRAY_SIZE(irs1125_custom_ctrls); i++)	{
+@@ -923,6 +984,27 @@ static int irs1125_ctrls_init(struct irs
+ 		goto error_ctrls;
+ 	}
+ 
++	for (i = 0; i < IRS1125_NUM_SEQ_ENTRIES; i++) {
++		ctrl_cfg.name = expo_ctrl_names[i];
++		ctrl_cfg.id = IRS1125_CID_SAFE_RECONFIG_S0_EXPO + i * 2;
++		ctrl = v4l2_ctrl_new_custom(hdl, &ctrl_cfg,
++					    NULL);
++		if (!ctrl)
++			dev_err(dev, "Failed to init exposure control %s\n",
++				ctrl_cfg.name);
++	}
++
++	ctrl_cfg.def = 0;
++	for (i = 0; i < IRS1125_NUM_SEQ_ENTRIES; i++) {
++		ctrl_cfg.name = frame_ctrl_names[i];
++		ctrl_cfg.id = IRS1125_CID_SAFE_RECONFIG_S0_FRAME + i * 2;
++		ctrl = v4l2_ctrl_new_custom(hdl, &ctrl_cfg,
++					    NULL);
++		if (!ctrl)
++			dev_err(dev, "Failed to init framerate control %s\n",
++				ctrl_cfg.name);
++	}
++
+ 	sensor->sd.ctrl_handler = hdl;
+ 	return 0;
+ 
+--- a/drivers/media/i2c/irs1125.h
++++ b/drivers/media/i2c/irs1125.h
+@@ -21,18 +21,57 @@
+ #define IRS1125_NUM_SEQ_ENTRIES 20
+ #define IRS1125_NUM_MOD_PLLS 4
+ 
+-#define IRS1125_CID_CUSTOM_BASE        (V4L2_CID_USER_BASE | 0xf000)
+-#define IRS1125_CID_SAFE_RECONFIG      (IRS1125_CID_CUSTOM_BASE + 0)
+-#define IRS1125_CID_CONTINUOUS_TRIG    (IRS1125_CID_CUSTOM_BASE + 1)
+-#define IRS1125_CID_TRIGGER            (IRS1125_CID_CUSTOM_BASE + 2)
+-#define IRS1125_CID_RECONFIG           (IRS1125_CID_CUSTOM_BASE + 3)
+-#define IRS1125_CID_ILLU_ON            (IRS1125_CID_CUSTOM_BASE + 4)
+-#define IRS1125_CID_NUM_SEQS           (IRS1125_CID_CUSTOM_BASE + 5)
+-#define IRS1125_CID_MOD_PLL            (IRS1125_CID_CUSTOM_BASE + 6)
+-#define IRS1125_CID_SEQ_CONFIG         (IRS1125_CID_CUSTOM_BASE + 7)
+-#define IRS1125_CID_IDENT0             (IRS1125_CID_CUSTOM_BASE + 8)
+-#define IRS1125_CID_IDENT1             (IRS1125_CID_CUSTOM_BASE + 9)
+-#define IRS1125_CID_IDENT2             (IRS1125_CID_CUSTOM_BASE + 10)
++#define IRS1125_CID_CUSTOM_BASE			(V4L2_CID_USER_BASE | 0xf000)
++#define IRS1125_CID_CONTINUOUS_TRIG		(IRS1125_CID_CUSTOM_BASE + 1)
++#define IRS1125_CID_TRIGGER			(IRS1125_CID_CUSTOM_BASE + 2)
++#define IRS1125_CID_RECONFIG			(IRS1125_CID_CUSTOM_BASE + 3)
++#define IRS1125_CID_ILLU_ON			(IRS1125_CID_CUSTOM_BASE + 4)
++#define IRS1125_CID_NUM_SEQS			(IRS1125_CID_CUSTOM_BASE + 5)
++#define IRS1125_CID_MOD_PLL			(IRS1125_CID_CUSTOM_BASE + 6)
++#define IRS1125_CID_SEQ_CONFIG			(IRS1125_CID_CUSTOM_BASE + 7)
++#define IRS1125_CID_IDENT0			(IRS1125_CID_CUSTOM_BASE + 8)
++#define IRS1125_CID_IDENT1			(IRS1125_CID_CUSTOM_BASE + 9)
++#define IRS1125_CID_IDENT2			(IRS1125_CID_CUSTOM_BASE + 10)
++#define IRS1125_CID_SAFE_RECONFIG_S0_EXPO	(IRS1125_CID_CUSTOM_BASE + 11)
++#define IRS1125_CID_SAFE_RECONFIG_S0_FRAME	(IRS1125_CID_CUSTOM_BASE + 12)
++#define IRS1125_CID_SAFE_RECONFIG_S1_EXPO	(IRS1125_CID_CUSTOM_BASE + 13)
++#define IRS1125_CID_SAFE_RECONFIG_S1_FRAME	(IRS1125_CID_CUSTOM_BASE + 14)
++#define IRS1125_CID_SAFE_RECONFIG_S2_EXPO	(IRS1125_CID_CUSTOM_BASE + 15)
++#define IRS1125_CID_SAFE_RECONFIG_S2_FRAME	(IRS1125_CID_CUSTOM_BASE + 16)
++#define IRS1125_CID_SAFE_RECONFIG_S3_EXPO	(IRS1125_CID_CUSTOM_BASE + 17)
++#define IRS1125_CID_SAFE_RECONFIG_S3_FRAME	(IRS1125_CID_CUSTOM_BASE + 18)
++#define IRS1125_CID_SAFE_RECONFIG_S4_EXPO	(IRS1125_CID_CUSTOM_BASE + 19)
++#define IRS1125_CID_SAFE_RECONFIG_S4_FRAME	(IRS1125_CID_CUSTOM_BASE + 20)
++#define IRS1125_CID_SAFE_RECONFIG_S5_EXPO	(IRS1125_CID_CUSTOM_BASE + 21)
++#define IRS1125_CID_SAFE_RECONFIG_S5_FRAME	(IRS1125_CID_CUSTOM_BASE + 22)
++#define IRS1125_CID_SAFE_RECONFIG_S6_EXPO	(IRS1125_CID_CUSTOM_BASE + 23)
++#define IRS1125_CID_SAFE_RECONFIG_S6_FRAME	(IRS1125_CID_CUSTOM_BASE + 24)
++#define IRS1125_CID_SAFE_RECONFIG_S7_EXPO	(IRS1125_CID_CUSTOM_BASE + 25)
++#define IRS1125_CID_SAFE_RECONFIG_S7_FRAME	(IRS1125_CID_CUSTOM_BASE + 26)
++#define IRS1125_CID_SAFE_RECONFIG_S8_EXPO	(IRS1125_CID_CUSTOM_BASE + 27)
++#define IRS1125_CID_SAFE_RECONFIG_S8_FRAME	(IRS1125_CID_CUSTOM_BASE + 28)
++#define IRS1125_CID_SAFE_RECONFIG_S9_EXPO	(IRS1125_CID_CUSTOM_BASE + 29)
++#define IRS1125_CID_SAFE_RECONFIG_S9_FRAME	(IRS1125_CID_CUSTOM_BASE + 30)
++#define IRS1125_CID_SAFE_RECONFIG_S10_EXPO	(IRS1125_CID_CUSTOM_BASE + 31)
++#define IRS1125_CID_SAFE_RECONFIG_S10_FRAME	(IRS1125_CID_CUSTOM_BASE + 32)
++#define IRS1125_CID_SAFE_RECONFIG_S11_EXPO	(IRS1125_CID_CUSTOM_BASE + 33)
++#define IRS1125_CID_SAFE_RECONFIG_S11_FRAME	(IRS1125_CID_CUSTOM_BASE + 34)
++#define IRS1125_CID_SAFE_RECONFIG_S12_EXPO	(IRS1125_CID_CUSTOM_BASE + 35)
++#define IRS1125_CID_SAFE_RECONFIG_S12_FRAME	(IRS1125_CID_CUSTOM_BASE + 36)
++#define IRS1125_CID_SAFE_RECONFIG_S13_EXPO	(IRS1125_CID_CUSTOM_BASE + 37)
++#define IRS1125_CID_SAFE_RECONFIG_S13_FRAME	(IRS1125_CID_CUSTOM_BASE + 38)
++#define IRS1125_CID_SAFE_RECONFIG_S14_EXPO	(IRS1125_CID_CUSTOM_BASE + 39)
++#define IRS1125_CID_SAFE_RECONFIG_S14_FRAME	(IRS1125_CID_CUSTOM_BASE + 40)
++#define IRS1125_CID_SAFE_RECONFIG_S15_EXPO	(IRS1125_CID_CUSTOM_BASE + 41)
++#define IRS1125_CID_SAFE_RECONFIG_S15_FRAME	(IRS1125_CID_CUSTOM_BASE + 42)
++#define IRS1125_CID_SAFE_RECONFIG_S16_EXPO	(IRS1125_CID_CUSTOM_BASE + 43)
++#define IRS1125_CID_SAFE_RECONFIG_S16_FRAME	(IRS1125_CID_CUSTOM_BASE + 44)
++#define IRS1125_CID_SAFE_RECONFIG_S17_EXPO	(IRS1125_CID_CUSTOM_BASE + 45)
++#define IRS1125_CID_SAFE_RECONFIG_S17_FRAME	(IRS1125_CID_CUSTOM_BASE + 46)
++#define IRS1125_CID_SAFE_RECONFIG_S18_EXPO	(IRS1125_CID_CUSTOM_BASE + 47)
++#define IRS1125_CID_SAFE_RECONFIG_S18_FRAME	(IRS1125_CID_CUSTOM_BASE + 48)
++#define IRS1125_CID_SAFE_RECONFIG_S19_EXPO	(IRS1125_CID_CUSTOM_BASE + 49)
++#define IRS1125_CID_SAFE_RECONFIG_S19_FRAME	(IRS1125_CID_CUSTOM_BASE + 50)
+ 
+ struct irs1125_seq_cfg {
+ 	__u16 exposure;
+@@ -41,11 +80,6 @@ struct irs1125_seq_cfg {
+ 	__u16 pll;
+ };
+ 
+-struct irs1125_illu {
+-	__u16 exposure;
+-	__u16 framerate;
+-};
+-
+ struct irs1125_mod_pll {
+ 	__u16 pllcfg1;
+ 	__u16 pllcfg2;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0243-media-irs1125-Keep-HW-in-sync-after-imager-reset.patch b/target/linux/bcm27xx/patches-5.15/950-0243-media-irs1125-Keep-HW-in-sync-after-imager-reset.patch
new file mode 100644
index 0000000000..0258bae249
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0243-media-irs1125-Keep-HW-in-sync-after-imager-reset.patch
@@ -0,0 +1,181 @@
+From dbabaea748b78ebcd6659168ee8259340da5e8fa Mon Sep 17 00:00:00 2001
+From: Markus Proeller <markus.proeller@pieye.org>
+Date: Tue, 16 Jun 2020 13:33:56 +0200
+Subject: [PATCH] media: irs1125: Keep HW in sync after imager reset
+
+When closing the video device, the irs1125 is put in power down state.
+To keep V4L2 ctrls and the HW in sync, v4l2_ctrl_handler_setup is
+called after power up.
+
+The compound ctrl IRS1125_CID_MOD_PLL however has a default value
+of all zeros, which puts the imager into a non responding state.
+Thus, this ctrl is not written by the driver into HW after power up.
+The userspace has to take care to write senseful data.
+
+Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
+---
+ drivers/media/i2c/irs1125.c | 121 +++++++++++++++++-------------------
+ 1 file changed, 58 insertions(+), 63 deletions(-)
+
+--- a/drivers/media/i2c/irs1125.c
++++ b/drivers/media/i2c/irs1125.c
+@@ -82,6 +82,7 @@ struct irs1125 {
+ 	struct v4l2_ctrl *ctrl_numseq;
+ 
+ 	int power_count;
++	bool mod_pll_init;
+ };
+ 
+ static inline struct irs1125 *to_state(struct v4l2_subdev *sd)
+@@ -276,8 +277,7 @@ static struct regval_list irs1125_seq_cf
+ 	{0xC039, 0x0000},
+ 	{0xC401, 0x0002},
+ 
+-	{0xFFFF, 1},
+-	{0xA87C, 0x0001}
++	{0xFFFF, 1}
+ };
+ 
+ static int irs1125_write(struct v4l2_subdev *sd, u16 reg, u16 val)
+@@ -471,7 +471,11 @@ static int __sensor_init(struct v4l2_sub
+ 		return ret;
+ 	}
+ 
+-	return 0;
++	irs1125->mod_pll_init = true;
++	v4l2_ctrl_handler_setup(&irs1125->ctrl_handler);
++	irs1125->mod_pll_init = false;
++
++	return irs1125_write(sd, 0xA87C, 0x0001);
+ }
+ 
+ static int irs1125_sensor_power(struct v4l2_subdev *sd, int on)
+@@ -607,8 +611,6 @@ static int irs1125_s_ctrl(struct v4l2_ct
+ 	struct irs1125 *dev = container_of(ctrl->handler,
+ 					struct irs1125, ctrl_handler);
+ 	struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
+-	struct irs1125_mod_pll *mod_cur, *mod_new;
+-	u16 addr, val;
+ 	int err = 0, i;
+ 
+ 	switch (ctrl->id) {
+@@ -660,68 +662,61 @@ static int irs1125_s_ctrl(struct v4l2_ct
+ 				    ctrl->val);
+ 		break;
+ 	}
+-	case IRS1125_CID_MOD_PLL:
++	case IRS1125_CID_MOD_PLL: {
++		struct irs1125_mod_pll *mod_new;
++
++		if (dev->mod_pll_init)
++			break;
++
+ 		mod_new = (struct irs1125_mod_pll *)ctrl->p_new.p;
+-		mod_cur = (struct irs1125_mod_pll *)ctrl->p_cur.p;
+ 		for (i = 0; i < IRS1125_NUM_MOD_PLLS; i++) {
+-			if (mod_cur[i].pllcfg1 != mod_new[i].pllcfg1) {
+-				addr = 0xC3A0 + i * 3;
+-				val = mod_new[i].pllcfg1;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (mod_cur[i].pllcfg2 != mod_new[i].pllcfg2) {
+-				addr = 0xC3A1 + i * 3;
+-				val = mod_new[i].pllcfg2;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (mod_cur[i].pllcfg3 != mod_new[i].pllcfg3) {
+-				addr = 0xC3A2 + i * 3;
+-				val = mod_new[i].pllcfg3;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (mod_cur[i].pllcfg4 != mod_new[i].pllcfg4) {
+-				addr = 0xC24C + i * 5;
+-				val = mod_new[i].pllcfg4;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (mod_cur[i].pllcfg5 != mod_new[i].pllcfg5) {
+-				addr = 0xC24D + i * 5;
+-				val = mod_new[i].pllcfg5;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (mod_cur[i].pllcfg6 != mod_new[i].pllcfg6) {
+-				addr = 0xC24E + i * 5;
+-				val = mod_new[i].pllcfg6;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (mod_cur[i].pllcfg7 != mod_new[i].pllcfg7) {
+-				addr = 0xC24F + i * 5;
+-				val = mod_new[i].pllcfg7;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
+-			if (mod_cur[i].pllcfg8 != mod_new[i].pllcfg8) {
+-				addr = 0xC250 + i * 5;
+-				val = mod_new[i].pllcfg8;
+-				err = irs1125_write(&dev->sd, addr, val);
+-				if (err < 0)
+-					break;
+-			}
++			unsigned int pll_offset, ssc_offset;
++
++			pll_offset = i * 3;
++			ssc_offset = i * 5;
++
++			err = irs1125_write(&dev->sd, 0xC3A0 + pll_offset,
++					    mod_new[i].pllcfg1);
++			if (err < 0)
++				break;
++
++			err = irs1125_write(&dev->sd, 0xC3A1 + pll_offset,
++					    mod_new[i].pllcfg2);
++			if (err < 0)
++				break;
++
++			err = irs1125_write(&dev->sd, 0xC3A2 + pll_offset,
++					    mod_new[i].pllcfg3);
++			if (err < 0)
++				break;
++
++			err = irs1125_write(&dev->sd, 0xC24C + ssc_offset,
++					    mod_new[i].pllcfg4);
++			if (err < 0)
++				break;
++
++			err = irs1125_write(&dev->sd, 0xC24D + ssc_offset,
++					    mod_new[i].pllcfg5);
++			if (err < 0)
++				break;
++
++			err = irs1125_write(&dev->sd, 0xC24E + ssc_offset,
++					    mod_new[i].pllcfg6);
++			if (err < 0)
++				break;
++
++			err = irs1125_write(&dev->sd, 0xC24F + ssc_offset,
++					    mod_new[i].pllcfg7);
++			if (err < 0)
++				break;
++
++			err = irs1125_write(&dev->sd, 0xC250 + ssc_offset,
++					    mod_new[i].pllcfg8);
++			if (err < 0)
++				break;
+ 		}
+ 		break;
++	}
+ 	case IRS1125_CID_SEQ_CONFIG: {
+ 		struct irs1125_seq_cfg *cfg_new;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0244-staging-bcm2835-audio-Add-missing-MODULE_ALIAS.patch b/target/linux/bcm27xx/patches-5.15/950-0244-staging-bcm2835-audio-Add-missing-MODULE_ALIAS.patch
new file mode 100644
index 0000000000..b28e8b555f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0244-staging-bcm2835-audio-Add-missing-MODULE_ALIAS.patch
@@ -0,0 +1,30 @@
+From 013c1eecd74e1c40eda16fc6230e6d4ec6106d53 Mon Sep 17 00:00:00 2001
+From: Maxim Mikityanskiy <maxtram95@gmail.com>
+Date: Sat, 20 Jun 2020 15:40:00 +0300
+Subject: [PATCH] staging: bcm2835-audio: Add missing MODULE_ALIAS
+
+Commit 8353fe6f1e0f ("Revert "staging: bcm2835-audio: Drop DT
+dependency"") reverts the upstream change and makes bcm2835-audio use
+device tree again, however, it also removes the MODULE_ALIAS for the
+platform device. This MODULE_ALIAS is needed, because VCHIQ registers
+bcm2835-audio as a child platform device since commit 25c7597af20d
+("staging: vchiq_arm: Register a platform device for audio"), and this
+mechanism is adopted also in the downstream kernel.
+
+This commit puts back that MODULE_ALIAS to make bcm2835-audio
+autoprobing work again. The rest of VCHIQ children have their
+MODULE_ALIASes in place.
+
+Fixes: 8353fe6f1e0f ("Revert "staging: bcm2835-audio: Drop DT dependency"")
+Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
+---
+ drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -438,3 +438,4 @@ module_platform_driver(bcm2835_alsa_driv
+ MODULE_AUTHOR("Dom Cobley");
+ MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
+ MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:bcm2835_audio");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0245-drivers-media-Remove-the-downstream-version-of-bcm28.patch b/target/linux/bcm27xx/patches-5.15/950-0245-drivers-media-Remove-the-downstream-version-of-bcm28.patch
new file mode 100644
index 0000000000..36893a99ea
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0245-drivers-media-Remove-the-downstream-version-of-bcm28.patch
@@ -0,0 +1,3175 @@
+From 606a02e0617f3adbcdd7aa82913771403d137269 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 23 Jun 2020 10:05:57 +0100
+Subject: [PATCH] drivers: media: Remove the downstream version of
+ bcm2835-unicam
+
+About to be replaced by the upstream version.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/Kconfig        |   14 -
+ drivers/media/platform/bcm2835/Makefile       |    3 -
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 2873 -----------------
+ .../media/platform/bcm2835/vc4-regs-unicam.h  |  253 --
+ 4 files changed, 3143 deletions(-)
+ delete mode 100644 drivers/media/platform/bcm2835/Kconfig
+ delete mode 100644 drivers/media/platform/bcm2835/Makefile
+ delete mode 100644 drivers/media/platform/bcm2835/bcm2835-unicam.c
+ delete mode 100644 drivers/media/platform/bcm2835/vc4-regs-unicam.h
+
+--- a/drivers/media/platform/bcm2835/Kconfig
++++ /dev/null
+@@ -1,14 +0,0 @@
+-# Broadcom VideoCore4 V4L2 camera support
+-
+-config VIDEO_BCM2835_UNICAM
+-	tristate "Broadcom BCM2835 Unicam video capture driver"
+-	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && MEDIA_CONTROLLER
+-	depends on ARCH_BCM2835 || COMPILE_TEST
+-	select VIDEOBUF2_DMA_CONTIG
+-	select V4L2_FWNODE
+-	help
+-	  Say Y here to enable V4L2 subdevice for CSI2 receiver.
+-	  This is a V4L2 subdevice that interfaces directly to the VC4 peripheral.
+-
+-	   To compile this driver as a module, choose M here. The module
+-	   will be called bcm2835-unicam.
+--- a/drivers/media/platform/bcm2835/Makefile
++++ /dev/null
+@@ -1,3 +0,0 @@
+-# Makefile for BCM2835 Unicam driver
+-
+-obj-$(CONFIG_VIDEO_BCM2835_UNICAM) += bcm2835-unicam.o
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ /dev/null
+@@ -1,2873 +0,0 @@
+-// SPDX-License-Identifier: GPL-2.0-only
+-/*
+- * BCM2835 Unicam Capture Driver
+- *
+- * Copyright (C) 2017-2020 - Raspberry Pi (Trading) Ltd.
+- *
+- * Dave Stevenson <dave.stevenson@raspberrypi.com>
+- *
+- * Based on TI am437x driver by
+- *   Benoit Parrot <bparrot@ti.com>
+- *   Lad, Prabhakar <prabhakar.csengg@gmail.com>
+- *
+- * and TI CAL camera interface driver by
+- *    Benoit Parrot <bparrot@ti.com>
+- *
+- *
+- * There are two camera drivers in the kernel for BCM283x - this one
+- * and bcm2835-camera (currently in staging).
+- *
+- * This driver directly controls the Unicam peripheral - there is no
+- * involvement with the VideoCore firmware. Unicam receives CSI-2 or
+- * CCP2 data and writes it into SDRAM.
+- * The only potential processing options are to repack Bayer data into an
+- * alternate format, and applying windowing.
+- * The repacking does not shift the data, so can repack V4L2_PIX_FMT_Sxxxx10P
+- * to V4L2_PIX_FMT_Sxxxx10, or V4L2_PIX_FMT_Sxxxx12P to V4L2_PIX_FMT_Sxxxx12,
+- * but not generically up to V4L2_PIX_FMT_Sxxxx16. The driver will add both
+- * formats where the relevant formats are defined, and will automatically
+- * configure the repacking as required.
+- * Support for windowing may be added later.
+- *
+- * It should be possible to connect this driver to any sensor with a
+- * suitable output interface and V4L2 subdevice driver.
+- *
+- * bcm2835-camera uses the VideoCore firmware to control the sensor,
+- * Unicam, ISP, and all tuner control loops. Fully processed frames are
+- * delivered to the driver by the firmware. It only has sensor drivers
+- * for Omnivision OV5647, and Sony IMX219 sensors.
+- *
+- * The two drivers are mutually exclusive for the same Unicam instance.
+- * The VideoCore firmware checks the device tree configuration during boot.
+- * If it finds device tree nodes called csi0 or csi1 it will block the
+- * firmware from accessing the peripheral, and bcm2835-camera will
+- * not be able to stream data.
+- */
+-
+-#include <linux/clk.h>
+-#include <linux/delay.h>
+-#include <linux/device.h>
+-#include <linux/dma-mapping.h>
+-#include <linux/err.h>
+-#include <linux/init.h>
+-#include <linux/interrupt.h>
+-#include <linux/io.h>
+-#include <linux/module.h>
+-#include <linux/of_device.h>
+-#include <linux/of_graph.h>
+-#include <linux/pinctrl/consumer.h>
+-#include <linux/platform_device.h>
+-#include <linux/pm_runtime.h>
+-#include <linux/slab.h>
+-#include <linux/uaccess.h>
+-#include <linux/videodev2.h>
+-
+-#include <media/v4l2-common.h>
+-#include <media/v4l2-ctrls.h>
+-#include <media/v4l2-dev.h>
+-#include <media/v4l2-device.h>
+-#include <media/v4l2-dv-timings.h>
+-#include <media/v4l2-event.h>
+-#include <media/v4l2-ioctl.h>
+-#include <media/v4l2-fwnode.h>
+-#include <media/videobuf2-dma-contig.h>
+-
+-#include "vc4-regs-unicam.h"
+-
+-#define UNICAM_MODULE_NAME	"unicam"
+-#define UNICAM_VERSION		"0.1.0"
+-
+-static int debug;
+-module_param(debug, int, 0644);
+-MODULE_PARM_DESC(debug, "Debug level 0-3");
+-
+-#define unicam_dbg(level, dev, fmt, arg...)	\
+-		v4l2_dbg(level, debug, &(dev)->v4l2_dev, fmt, ##arg)
+-#define unicam_info(dev, fmt, arg...)	\
+-		v4l2_info(&(dev)->v4l2_dev, fmt, ##arg)
+-#define unicam_err(dev, fmt, arg...)	\
+-		v4l2_err(&(dev)->v4l2_dev, fmt, ##arg)
+-
+-/* To protect against a dodgy sensor driver never returning an error from
+- * enum_mbus_code, set a maximum index value to be used.
+- */
+-#define MAX_ENUM_MBUS_CODE	128
+-
+-/*
+- * Stride is a 16 bit register, but also has to be a multiple of 32.
+- */
+-#define BPL_ALIGNMENT		32
+-#define MAX_BYTESPERLINE	((1 << 16) - BPL_ALIGNMENT)
+-/*
+- * Max width is therefore determined by the max stride divided by
+- * the number of bits per pixel. Take 32bpp as a
+- * worst case.
+- * No imposed limit on the height, so adopt a square image for want
+- * of anything better.
+- */
+-#define MAX_WIDTH	(MAX_BYTESPERLINE / 4)
+-#define MAX_HEIGHT	MAX_WIDTH
+-/* Define a nominal minimum image size */
+-#define MIN_WIDTH	16
+-#define MIN_HEIGHT	16
+-/* Default size of the embedded buffer */
+-#define UNICAM_EMBEDDED_SIZE	8192
+-
+-/*
+- * Size of the dummy buffer. Can be any size really, but the DMA
+- * allocation works in units of page sizes.
+- */
+-#define DUMMY_BUF_SIZE	(PAGE_SIZE)
+-
+-enum pad_types {
+-	IMAGE_PAD,
+-	METADATA_PAD,
+-	MAX_NODES
+-};
+-
+-/*
+- * struct unicam_fmt - Unicam media bus format information
+- * @pixelformat: V4L2 pixel format FCC identifier. 0 if n/a.
+- * @repacked_fourcc: V4L2 pixel format FCC identifier if the data is expanded
+- * out to 16bpp. 0 if n/a.
+- * @code: V4L2 media bus format code.
+- * @depth: Bits per pixel as delivered from the source.
+- * @csi_dt: CSI data type.
+- * @check_variants: Flag to denote that there are multiple mediabus formats
+- *		still in the list that could match this V4L2 format.
+- */
+-struct unicam_fmt {
+-	u32	fourcc;
+-	u32	repacked_fourcc;
+-	u32	code;
+-	u8	depth;
+-	u8	csi_dt;
+-	u8	check_variants;
+-};
+-
+-static const struct unicam_fmt formats[] = {
+-	/* YUV Formats */
+-	{
+-		.fourcc		= V4L2_PIX_FMT_YUYV,
+-		.code		= MEDIA_BUS_FMT_YUYV8_2X8,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-		.check_variants = 1,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_UYVY,
+-		.code		= MEDIA_BUS_FMT_UYVY8_2X8,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-		.check_variants = 1,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_YVYU,
+-		.code		= MEDIA_BUS_FMT_YVYU8_2X8,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-		.check_variants = 1,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_VYUY,
+-		.code		= MEDIA_BUS_FMT_VYUY8_2X8,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-		.check_variants = 1,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_YUYV,
+-		.code		= MEDIA_BUS_FMT_YUYV8_1X16,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_UYVY,
+-		.code		= MEDIA_BUS_FMT_UYVY8_1X16,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_YVYU,
+-		.code		= MEDIA_BUS_FMT_YVYU8_1X16,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_VYUY,
+-		.code		= MEDIA_BUS_FMT_VYUY8_1X16,
+-		.depth		= 16,
+-		.csi_dt		= 0x1e,
+-	}, {
+-	/* RGB Formats */
+-		.fourcc		= V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
+-		.code		= MEDIA_BUS_FMT_RGB565_2X8_LE,
+-		.depth		= 16,
+-		.csi_dt		= 0x22,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
+-		.code		= MEDIA_BUS_FMT_RGB565_2X8_BE,
+-		.depth		= 16,
+-		.csi_dt		= 0x22
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
+-		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
+-		.depth		= 16,
+-		.csi_dt		= 0x21,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
+-		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
+-		.depth		= 16,
+-		.csi_dt		= 0x21,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_RGB24, /* rgb */
+-		.code		= MEDIA_BUS_FMT_RGB888_1X24,
+-		.depth		= 24,
+-		.csi_dt		= 0x24,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_BGR24, /* bgr */
+-		.code		= MEDIA_BUS_FMT_BGR888_1X24,
+-		.depth		= 24,
+-		.csi_dt		= 0x24,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_RGB32, /* argb */
+-		.code		= MEDIA_BUS_FMT_ARGB8888_1X32,
+-		.depth		= 32,
+-		.csi_dt		= 0x0,
+-	}, {
+-	/* Bayer Formats */
+-		.fourcc		= V4L2_PIX_FMT_SBGGR8,
+-		.code		= MEDIA_BUS_FMT_SBGGR8_1X8,
+-		.depth		= 8,
+-		.csi_dt		= 0x2a,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGBRG8,
+-		.code		= MEDIA_BUS_FMT_SGBRG8_1X8,
+-		.depth		= 8,
+-		.csi_dt		= 0x2a,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGRBG8,
+-		.code		= MEDIA_BUS_FMT_SGRBG8_1X8,
+-		.depth		= 8,
+-		.csi_dt		= 0x2a,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SRGGB8,
+-		.code		= MEDIA_BUS_FMT_SRGGB8_1X8,
+-		.depth		= 8,
+-		.csi_dt		= 0x2a,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SBGGR10P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SBGGR10,
+-		.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
+-		.depth		= 10,
+-		.csi_dt		= 0x2b,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGBRG10P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SGBRG10,
+-		.code		= MEDIA_BUS_FMT_SGBRG10_1X10,
+-		.depth		= 10,
+-		.csi_dt		= 0x2b,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGRBG10P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SGRBG10,
+-		.code		= MEDIA_BUS_FMT_SGRBG10_1X10,
+-		.depth		= 10,
+-		.csi_dt		= 0x2b,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SRGGB10P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SRGGB10,
+-		.code		= MEDIA_BUS_FMT_SRGGB10_1X10,
+-		.depth		= 10,
+-		.csi_dt		= 0x2b,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SBGGR12P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SBGGR12,
+-		.code		= MEDIA_BUS_FMT_SBGGR12_1X12,
+-		.depth		= 12,
+-		.csi_dt		= 0x2c,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGBRG12P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SGBRG12,
+-		.code		= MEDIA_BUS_FMT_SGBRG12_1X12,
+-		.depth		= 12,
+-		.csi_dt		= 0x2c,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGRBG12P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SGRBG12,
+-		.code		= MEDIA_BUS_FMT_SGRBG12_1X12,
+-		.depth		= 12,
+-		.csi_dt		= 0x2c,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SRGGB12P,
+-		.repacked_fourcc = V4L2_PIX_FMT_SRGGB12,
+-		.code		= MEDIA_BUS_FMT_SRGGB12_1X12,
+-		.depth		= 12,
+-		.csi_dt		= 0x2c,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SBGGR14P,
+-		.code		= MEDIA_BUS_FMT_SBGGR14_1X14,
+-		.depth		= 14,
+-		.csi_dt		= 0x2d,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGBRG14P,
+-		.code		= MEDIA_BUS_FMT_SGBRG14_1X14,
+-		.depth		= 14,
+-		.csi_dt		= 0x2d,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SGRBG14P,
+-		.code		= MEDIA_BUS_FMT_SGRBG14_1X14,
+-		.depth		= 14,
+-		.csi_dt		= 0x2d,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_SRGGB14P,
+-		.code		= MEDIA_BUS_FMT_SRGGB14_1X14,
+-		.depth		= 14,
+-		.csi_dt		= 0x2d,
+-	}, {
+-	/*
+-	 * 16 bit Bayer formats could be supported, but there is no CSI2
+-	 * data_type defined for raw 16, and no sensors that produce it at
+-	 * present.
+-	 */
+-
+-	/* Greyscale formats */
+-		.fourcc		= V4L2_PIX_FMT_GREY,
+-		.code		= MEDIA_BUS_FMT_Y8_1X8,
+-		.depth		= 8,
+-		.csi_dt		= 0x2a,
+-	}, {
+-		.fourcc		= V4L2_PIX_FMT_Y10P,
+-		.repacked_fourcc = V4L2_PIX_FMT_Y10,
+-		.code		= MEDIA_BUS_FMT_Y10_1X10,
+-		.depth		= 10,
+-		.csi_dt		= 0x2b,
+-	}, {
+-		/* NB There is no packed V4L2 fourcc for this format. */
+-		.repacked_fourcc = V4L2_PIX_FMT_Y12,
+-		.code		= MEDIA_BUS_FMT_Y12_1X12,
+-		.depth		= 12,
+-		.csi_dt		= 0x2c,
+-	},
+-	/* Embedded data format */
+-	{
+-		.fourcc		= V4L2_META_FMT_SENSOR_DATA,
+-		.code		= MEDIA_BUS_FMT_SENSOR_DATA,
+-		.depth		= 8,
+-	}
+-};
+-
+-struct unicam_dmaqueue {
+-	struct list_head	active;
+-};
+-
+-struct unicam_buffer {
+-	struct vb2_v4l2_buffer vb;
+-	struct list_head list;
+-};
+-
+-struct unicam_cfg {
+-	/* peripheral base address */
+-	void __iomem *base;
+-	/* clock gating base address */
+-	void __iomem *clk_gate_base;
+-};
+-
+-#define MAX_POSSIBLE_PIX_FMTS (ARRAY_SIZE(formats))
+-
+-struct unicam_node {
+-	int registered;
+-	int open;
+-	int streaming;
+-	unsigned int pad_id;
+-	/* Pointer pointing to current v4l2_buffer */
+-	struct unicam_buffer *cur_frm;
+-	/* Pointer pointing to next v4l2_buffer */
+-	struct unicam_buffer *next_frm;
+-	/* video capture */
+-	const struct unicam_fmt *fmt;
+-	/* Used to store current pixel format */
+-	struct v4l2_format v_fmt;
+-	/* Used to store current mbus frame format */
+-	struct v4l2_mbus_framefmt m_fmt;
+-	/* Buffer queue used in video-buf */
+-	struct vb2_queue buffer_queue;
+-	/* Queue of filled frames */
+-	struct unicam_dmaqueue dma_queue;
+-	/* IRQ lock for DMA queue */
+-	spinlock_t dma_queue_lock;
+-	/* lock used to access this structure */
+-	struct mutex lock;
+-	/* Identifies video device for this channel */
+-	struct video_device video_dev;
+-	/* Pointer to the parent handle */
+-	struct unicam_device *dev;
+-	struct media_pad pad;
+-	struct v4l2_ctrl_handler ctrl_handler;
+-	unsigned int embedded_lines;
+-	/*
+-	 * Dummy buffer intended to be used by unicam
+-	 * if we have no other queued buffers to swap to.
+-	 */
+-	void *dummy_buf_cpu_addr;
+-	dma_addr_t dummy_buf_dma_addr;
+-};
+-
+-struct unicam_device {
+-	/* V4l2 specific parameters */
+-
+-	struct v4l2_fwnode_endpoint endpoint;
+-
+-	struct v4l2_async_subdev asd;
+-
+-	/* unicam cfg */
+-	struct unicam_cfg cfg;
+-	/* clock handle */
+-	struct clk *clock;
+-	/* V4l2 device */
+-	struct v4l2_device v4l2_dev;
+-	struct media_device mdev;
+-
+-	/* parent device */
+-	struct platform_device *pdev;
+-	/* subdevice async Notifier */
+-	struct v4l2_async_notifier notifier;
+-	unsigned int sequence;
+-
+-	/* ptr to  sub device */
+-	struct v4l2_subdev *sensor;
+-	/* Pad config for the sensor */
+-	struct v4l2_subdev_pad_config *sensor_config;
+-
+-	unsigned int virtual_channel;
+-	enum v4l2_mbus_type bus_type;
+-	/*
+-	 * Stores bus.mipi_csi2.flags for CSI2 sensors, or
+-	 * bus.mipi_csi1.strobe for CCP2.
+-	 */
+-	unsigned int bus_flags;
+-	unsigned int max_data_lanes;
+-	unsigned int active_data_lanes;
+-	bool sensor_embedded_data;
+-
+-	struct unicam_node node[MAX_NODES];
+-};
+-
+-/* Hardware access */
+-#define clk_write(dev, val) writel((val) | 0x5a000000, (dev)->clk_gate_base)
+-#define clk_read(dev) readl((dev)->clk_gate_base)
+-
+-#define reg_read(dev, offset) readl((dev)->base + (offset))
+-#define reg_write(dev, offset, val) writel(val, (dev)->base + (offset))
+-
+-#define reg_read_field(dev, offset, mask) get_field(reg_read((dev), (offset), \
+-						    mask))
+-
+-static inline int get_field(u32 value, u32 mask)
+-{
+-	return (value & mask) >> __ffs(mask);
+-}
+-
+-static inline void set_field(u32 *valp, u32 field, u32 mask)
+-{
+-	u32 val = *valp;
+-
+-	val &= ~mask;
+-	val |= (field << __ffs(mask)) & mask;
+-	*valp = val;
+-}
+-
+-static inline void reg_write_field(struct unicam_cfg *dev, u32 offset,
+-				   u32 field, u32 mask)
+-{
+-	u32 val = reg_read((dev), (offset));
+-
+-	set_field(&val, field, mask);
+-	reg_write((dev), (offset), val);
+-}
+-
+-/* Power management functions */
+-static inline int unicam_runtime_get(struct unicam_device *dev)
+-{
+-	return pm_runtime_get_sync(&dev->pdev->dev);
+-}
+-
+-static inline void unicam_runtime_put(struct unicam_device *dev)
+-{
+-	pm_runtime_put_sync(&dev->pdev->dev);
+-}
+-
+-/* Format setup functions */
+-static const struct unicam_fmt *find_format_by_code(u32 code)
+-{
+-	unsigned int i;
+-
+-	for (i = 0; i < ARRAY_SIZE(formats); i++) {
+-		if (formats[i].code == code)
+-			return &formats[i];
+-	}
+-
+-	return NULL;
+-}
+-
+-static int check_mbus_format(struct unicam_device *dev,
+-			     const struct unicam_fmt *format)
+-{
+-	struct v4l2_subdev_mbus_code_enum mbus_code;
+-	int ret = 0;
+-	int i;
+-
+-	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
+-		memset(&mbus_code, 0, sizeof(mbus_code));
+-		mbus_code.index = i;
+-		mbus_code.pad = IMAGE_PAD;
+-		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+-
+-		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
+-				       NULL, &mbus_code);
+-
+-		if (!ret && mbus_code.code == format->code)
+-			return 1;
+-	}
+-
+-	return 0;
+-}
+-
+-static const struct unicam_fmt *find_format_by_pix(struct unicam_device *dev,
+-						   u32 pixelformat)
+-{
+-	unsigned int i;
+-
+-	for (i = 0; i < ARRAY_SIZE(formats); i++) {
+-		if (formats[i].fourcc == pixelformat ||
+-		    formats[i].repacked_fourcc == pixelformat) {
+-			if (formats[i].check_variants &&
+-			    !check_mbus_format(dev, &formats[i]))
+-				continue;
+-			return &formats[i];
+-		}
+-	}
+-
+-	return NULL;
+-}
+-
+-static inline unsigned int bytes_per_line(u32 width,
+-					  const struct unicam_fmt *fmt,
+-					  u32 v4l2_fourcc)
+-{
+-	if (v4l2_fourcc == fmt->repacked_fourcc)
+-		/* Repacking always goes to 16bpp */
+-		return ALIGN(width << 1, BPL_ALIGNMENT);
+-	else
+-		return ALIGN((width * fmt->depth) >> 3, BPL_ALIGNMENT);
+-}
+-
+-static int __subdev_get_format(struct unicam_device *dev,
+-			       struct v4l2_mbus_framefmt *fmt, int pad_id)
+-{
+-	struct v4l2_subdev_format sd_fmt = {
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.pad = pad_id
+-	};
+-	int ret;
+-
+-	ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_config,
+-			       &sd_fmt);
+-	if (ret < 0)
+-		return ret;
+-
+-	*fmt = sd_fmt.format;
+-
+-	unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
+-		   fmt->width, fmt->height, fmt->code);
+-
+-	return 0;
+-}
+-
+-static int __subdev_set_format(struct unicam_device *dev,
+-			       struct v4l2_mbus_framefmt *fmt, int pad_id)
+-{
+-	struct v4l2_subdev_format sd_fmt = {
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.pad = pad_id
+-	};
+-	int ret;
+-
+-	sd_fmt.format = *fmt;
+-
+-	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
+-			       &sd_fmt);
+-	if (ret < 0)
+-		return ret;
+-
+-	if (pad_id == IMAGE_PAD)
+-		unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__, fmt->width,
+-			   fmt->height, fmt->code);
+-	else
+-		unicam_dbg(1, dev, "%s Embedded data code:%04x\n", __func__,
+-			   sd_fmt.format.code);
+-
+-	return 0;
+-}
+-
+-static int unicam_calc_format_size_bpl(struct unicam_device *dev,
+-				       const struct unicam_fmt *fmt,
+-				       struct v4l2_format *f)
+-{
+-	unsigned int min_bytesperline;
+-
+-	v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 2,
+-			      &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 0,
+-			      0);
+-
+-	min_bytesperline = bytes_per_line(f->fmt.pix.width, fmt,
+-					  f->fmt.pix.pixelformat);
+-
+-	if (f->fmt.pix.bytesperline > min_bytesperline &&
+-	    f->fmt.pix.bytesperline <= MAX_BYTESPERLINE)
+-		f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline,
+-						BPL_ALIGNMENT);
+-	else
+-		f->fmt.pix.bytesperline = min_bytesperline;
+-
+-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+-
+-	unicam_dbg(3, dev, "%s: fourcc: %08X size: %dx%d bpl:%d img_size:%d\n",
+-		   __func__,
+-		   f->fmt.pix.pixelformat,
+-		   f->fmt.pix.width, f->fmt.pix.height,
+-		   f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
+-
+-	return 0;
+-}
+-
+-static int unicam_reset_format(struct unicam_node *node)
+-{
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_mbus_framefmt mbus_fmt;
+-	int ret;
+-
+-	if (dev->sensor_embedded_data || node->pad_id != METADATA_PAD) {
+-		ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
+-		if (ret) {
+-			unicam_err(dev, "Failed to get_format - ret %d\n", ret);
+-			return ret;
+-		}
+-
+-		if (mbus_fmt.code != node->fmt->code) {
+-			unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
+-				   node->fmt->code, mbus_fmt.code);
+-			return ret;
+-		}
+-	}
+-
+-	if (node->pad_id == IMAGE_PAD) {
+-		v4l2_fill_pix_format(&node->v_fmt.fmt.pix, &mbus_fmt);
+-		node->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+-		unicam_calc_format_size_bpl(dev, node->fmt, &node->v_fmt);
+-	} else {
+-		node->v_fmt.type = V4L2_BUF_TYPE_META_CAPTURE;
+-		node->v_fmt.fmt.meta.dataformat = V4L2_META_FMT_SENSOR_DATA;
+-		if (dev->sensor_embedded_data) {
+-			node->v_fmt.fmt.meta.buffersize =
+-					mbus_fmt.width * mbus_fmt.height;
+-			node->embedded_lines = mbus_fmt.height;
+-		} else {
+-			node->v_fmt.fmt.meta.buffersize = UNICAM_EMBEDDED_SIZE;
+-			node->embedded_lines = 1;
+-		}
+-	}
+-
+-	node->m_fmt = mbus_fmt;
+-	return 0;
+-}
+-
+-static void unicam_wr_dma_addr(struct unicam_cfg *cfg, dma_addr_t dmaaddr,
+-			       unsigned int buffer_size, int pad_id)
+-{
+-	dma_addr_t endaddr = dmaaddr + buffer_size;
+-
+-	/*
+-	 * dmaaddr and endaddr should be a 32-bit address with the top two bits
+-	 * set to 0x3 to signify uncached access through the Videocore memory
+-	 * controller.
+-	 */
+-	BUG_ON((dmaaddr >> 30) != 0x3 && (endaddr >> 30) != 0x3);
+-
+-	if (pad_id == IMAGE_PAD) {
+-		reg_write(cfg, UNICAM_IBSA0, dmaaddr);
+-		reg_write(cfg, UNICAM_IBEA0, endaddr);
+-	} else {
+-		reg_write(cfg, UNICAM_DBSA0, dmaaddr);
+-		reg_write(cfg, UNICAM_DBEA0, endaddr);
+-	}
+-}
+-
+-static inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
+-{
+-	dma_addr_t start_addr, cur_addr;
+-	unsigned int stride = dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline;
+-	struct unicam_buffer *frm = dev->node[IMAGE_PAD].cur_frm;
+-
+-	if (!frm)
+-		return 0;
+-
+-	start_addr = vb2_dma_contig_plane_dma_addr(&frm->vb.vb2_buf, 0);
+-	cur_addr = reg_read(&dev->cfg, UNICAM_IBWP);
+-	return (unsigned int)(cur_addr - start_addr) / stride;
+-}
+-
+-static inline void unicam_schedule_next_buffer(struct unicam_node *node)
+-{
+-	struct unicam_device *dev = node->dev;
+-	struct unicam_dmaqueue *dma_q = &node->dma_queue;
+-	struct unicam_buffer *buf;
+-	unsigned int size;
+-	dma_addr_t addr;
+-
+-	buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
+-	node->next_frm = buf;
+-	list_del(&buf->list);
+-
+-	addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
+-	size = (node->pad_id == IMAGE_PAD) ?
+-			dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage :
+-			dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
+-
+-	unicam_wr_dma_addr(&dev->cfg, addr, size, node->pad_id);
+-}
+-
+-static inline void unicam_schedule_dummy_buffer(struct unicam_node *node)
+-{
+-	struct unicam_device *dev = node->dev;
+-	dma_addr_t addr = node->dummy_buf_dma_addr;
+-
+-	unicam_dbg(3, dev, "Scheduling dummy buffer for node %d\n",
+-		   node->pad_id);
+-
+-	unicam_wr_dma_addr(&dev->cfg, addr, DUMMY_BUF_SIZE, node->pad_id);
+-	node->next_frm = NULL;
+-}
+-
+-static inline void unicam_process_buffer_complete(struct unicam_node *node,
+-						  unsigned int sequence)
+-{
+-	node->cur_frm->vb.field = node->m_fmt.field;
+-	node->cur_frm->vb.sequence = sequence;
+-
+-	vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
+-}
+-
+-static int unicam_num_nodes_streaming(struct unicam_device *dev)
+-{
+-	return dev->node[IMAGE_PAD].streaming +
+-	       dev->node[METADATA_PAD].streaming;
+-}
+-
+-static int unicam_all_nodes_streaming(struct unicam_device *dev)
+-{
+-	int ret;
+-
+-	ret = dev->node[IMAGE_PAD].open && dev->node[IMAGE_PAD].streaming;
+-	ret &= !dev->node[METADATA_PAD].open ||
+-	       dev->node[METADATA_PAD].streaming;
+-	return ret;
+-}
+-
+-static void unicam_queue_event_sof(struct unicam_device *unicam)
+-{
+-	struct v4l2_event event = {
+-		.type = V4L2_EVENT_FRAME_SYNC,
+-		.u.frame_sync.frame_sequence = unicam->sequence,
+-	};
+-
+-	v4l2_event_queue(&unicam->node[IMAGE_PAD].video_dev, &event);
+-}
+-
+-/*
+- * unicam_isr : ISR handler for unicam capture
+- * @irq: irq number
+- * @dev_id: dev_id ptr
+- *
+- * It changes status of the captured buffer, takes next buffer from the queue
+- * and sets its address in unicam registers
+- */
+-static irqreturn_t unicam_isr(int irq, void *dev)
+-{
+-	struct unicam_device *unicam = (struct unicam_device *)dev;
+-	struct unicam_cfg *cfg = &unicam->cfg;
+-	unsigned int lines_done = unicam_get_lines_done(dev);
+-	unsigned int sequence = unicam->sequence;
+-	int num_nodes_streaming = unicam_num_nodes_streaming(dev);
+-	int ista, sta;
+-	u64 ts;
+-	int i;
+-
+-	sta = reg_read(cfg, UNICAM_STA);
+-	/* Write value back to clear the interrupts */
+-	reg_write(cfg, UNICAM_STA, sta);
+-
+-	ista = reg_read(cfg, UNICAM_ISTA);
+-	/* Write value back to clear the interrupts */
+-	reg_write(cfg, UNICAM_ISTA, ista);
+-
+-	unicam_dbg(3, unicam, "ISR: ISTA: 0x%X, STA: 0x%X, sequence %d, lines done %d",
+-		   ista, sta, sequence, lines_done);
+-
+-	if (!(sta && (UNICAM_IS | UNICAM_PI0)))
+-		return IRQ_HANDLED;
+-
+-	/*
+-	 * We must run the frame end handler first. If we have a valid next_frm
+-	 * and we get a simultaneout FE + FS interrupt, running the FS handler
+-	 * first would null out the next_frm ptr and we would have lost the
+-	 * buffer forever.
+-	 */
+-	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
+-		/*
+-		 * Ensure we have swapped buffers already as we can't
+-		 * stop the peripheral. If no buffer is available, use a
+-		 * dummy buffer to dump out frames until we get a new buffer
+-		 * to use.
+-		 */
+-		for (i = 0; i < num_nodes_streaming; i++) {
+-			if (unicam->node[i].cur_frm)
+-				unicam_process_buffer_complete(&unicam->node[i],
+-							       sequence);
+-			unicam->node[i].cur_frm = unicam->node[i].next_frm;
+-		}
+-		unicam->sequence++;
+-	}
+-
+-	if (ista & UNICAM_FSI) {
+-		/*
+-		 * Timestamp is to be when the first data byte was captured,
+-		 * aka frame start.
+-		 */
+-		ts = ktime_get_ns();
+-		for (i = 0; i < num_nodes_streaming; i++) {
+-			if (unicam->node[i].cur_frm)
+-				unicam->node[i].cur_frm->vb.vb2_buf.timestamp =
+-								ts;
+-			/*
+-			 * Set the next frame output to go to a dummy frame
+-			 * if we have not managed to obtain another frame
+-			 * from the queue.
+-			 */
+-			unicam_schedule_dummy_buffer(&unicam->node[i]);
+-		}
+-
+-		unicam_queue_event_sof(unicam);
+-	}
+-	/*
+-	 * Cannot swap buffer at frame end, there may be a race condition
+-	 * where the HW does not actually swap it if the new frame has
+-	 * already started.
+-	 */
+-	if (ista & (UNICAM_FSI | UNICAM_LCI) && !(ista & UNICAM_FEI)) {
+-		for (i = 0; i < num_nodes_streaming; i++) {
+-			spin_lock(&unicam->node[i].dma_queue_lock);
+-			if (!list_empty(&unicam->node[i].dma_queue.active) &&
+-			    !unicam->node[i].next_frm)
+-				unicam_schedule_next_buffer(&unicam->node[i]);
+-			spin_unlock(&unicam->node[i].dma_queue_lock);
+-		}
+-	}
+-
+-	if (reg_read(&unicam->cfg, UNICAM_ICTL) & UNICAM_FCM) {
+-		/* Switch out of trigger mode if selected */
+-		reg_write_field(&unicam->cfg, UNICAM_ICTL, 1, UNICAM_TFC);
+-		reg_write_field(&unicam->cfg, UNICAM_ICTL, 0, UNICAM_FCM);
+-	}
+-	return IRQ_HANDLED;
+-}
+-
+-static int unicam_querycap(struct file *file, void *priv,
+-			   struct v4l2_capability *cap)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	strlcpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
+-	strlcpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
+-
+-	snprintf(cap->bus_info, sizeof(cap->bus_info),
+-		 "platform:%s", dev->v4l2_dev.name);
+-
+-	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
+-			    V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS |
+-			    V4L2_CAP_META_CAPTURE;
+-
+-	if (node->pad_id == IMAGE_PAD)
+-		cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+-	else
+-		cap->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
+-
+-	return 0;
+-}
+-
+-static int unicam_enum_fmt_vid_cap(struct file *file, void  *priv,
+-				   struct v4l2_fmtdesc *f)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev_mbus_code_enum mbus_code;
+-	const struct unicam_fmt *fmt = NULL;
+-	int index = 0;
+-	int ret = 0;
+-	int i;
+-
+-	if (node->pad_id == METADATA_PAD)
+-		return -EINVAL;
+-
+-	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
+-		memset(&mbus_code, 0, sizeof(mbus_code));
+-		mbus_code.index = i;
+-		mbus_code.pad = IMAGE_PAD;
+-		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+-
+-		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
+-				       NULL, &mbus_code);
+-		if (ret < 0) {
+-			unicam_dbg(2, dev,
+-				   "subdev->enum_mbus_code idx %d returned %d - index invalid\n",
+-				   i, ret);
+-			return -EINVAL;
+-		}
+-
+-		fmt = find_format_by_code(mbus_code.code);
+-		if (fmt) {
+-			if (fmt->fourcc) {
+-				if (index == f->index) {
+-					f->pixelformat = fmt->fourcc;
+-					break;
+-				}
+-				index++;
+-			}
+-			if (fmt->repacked_fourcc) {
+-				if (index == f->index) {
+-					f->pixelformat = fmt->repacked_fourcc;
+-					break;
+-				}
+-				index++;
+-			}
+-		}
+-	}
+-
+-	return 0;
+-}
+-
+-static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
+-				struct v4l2_format *f)
+-{
+-	struct v4l2_mbus_framefmt mbus_fmt = {0};
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	const struct unicam_fmt *fmt = NULL;
+-	int ret;
+-
+-	if (node->pad_id != IMAGE_PAD)
+-		return -EINVAL;
+-
+-	/*
+-	 * If a flip has occurred in the sensor, the fmt code might have
+-	 * changed. So we will need to re-fetch the format from the subdevice.
+-	 */
+-	ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
+-	if (ret)
+-		return -EINVAL;
+-
+-	/* Find the V4L2 format from mbus code. We must match a known format. */
+-	fmt = find_format_by_code(mbus_fmt.code);
+-	if (!fmt)
+-		return -EINVAL;
+-
+-	if (node->fmt != fmt) {
+-		/*
+-		 * The sensor format has changed so the pixelformat needs to
+-		 * be updated. Try and retain the packed/unpacked choice if
+-		 * at all possible.
+-		 */
+-		if (node->fmt->repacked_fourcc ==
+-						node->v_fmt.fmt.pix.pixelformat)
+-			/* Using the repacked format */
+-			node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
+-		else
+-			/* Using the native format */
+-			node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+-
+-		node->fmt = fmt;
+-	}
+-
+-	*f = node->v_fmt;
+-
+-	return 0;
+-}
+-
+-static
+-const struct unicam_fmt *get_first_supported_format(struct unicam_device *dev)
+-{
+-	struct v4l2_subdev_mbus_code_enum mbus_code;
+-	const struct unicam_fmt *fmt = NULL;
+-	int ret = 0;
+-	int j;
+-
+-	for (j = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++j) {
+-		memset(&mbus_code, 0, sizeof(mbus_code));
+-		mbus_code.index = j;
+-		mbus_code.pad = IMAGE_PAD;
+-		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+-
+-		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
+-				       &mbus_code);
+-		if (ret < 0) {
+-			unicam_dbg(2, dev,
+-				   "subdev->enum_mbus_code idx %d returned %d - continue\n",
+-				   j, ret);
+-			continue;
+-		}
+-
+-		unicam_dbg(2, dev, "subdev %s: code: 0x%08x idx: %d\n",
+-			   dev->sensor->name, mbus_code.code, j);
+-
+-		fmt = find_format_by_code(mbus_code.code);
+-		unicam_dbg(2, dev, "fmt 0x%08x returned as %p, V4L2 FOURCC 0x%08x, csi_dt 0x%02x\n",
+-			   mbus_code.code, fmt, fmt ? fmt->fourcc : 0,
+-			   fmt ? fmt->csi_dt : 0);
+-		if (fmt)
+-			return fmt;
+-	}
+-
+-	return NULL;
+-}
+-
+-static int unicam_try_fmt_vid_cap(struct file *file, void *priv,
+-				  struct v4l2_format *f)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev_format sd_fmt = {
+-		.which = V4L2_SUBDEV_FORMAT_TRY,
+-		.pad = IMAGE_PAD
+-	};
+-	struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
+-	const struct unicam_fmt *fmt;
+-	int ret;
+-
+-	if (node->pad_id == METADATA_PAD)
+-		return -EINVAL;
+-
+-	fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
+-	if (!fmt) {
+-		/* Pixel format not supported by unicam. Choose the first
+-		 * supported format, and let the sensor choose something else.
+-		 */
+-		unicam_dbg(3, dev, "Fourcc format (0x%08x) not found. Use first format.\n",
+-			   f->fmt.pix.pixelformat);
+-
+-		fmt = &formats[0];
+-		f->fmt.pix.pixelformat = fmt->fourcc;
+-	}
+-
+-	v4l2_fill_mbus_format(mbus_fmt, &f->fmt.pix, fmt->code);
+-	/*
+-	 * No support for receiving interlaced video, so never
+-	 * request it from the sensor subdev.
+-	 */
+-	mbus_fmt->field = V4L2_FIELD_NONE;
+-
+-	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
+-			       &sd_fmt);
+-	if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+-		return ret;
+-
+-	if (mbus_fmt->field != V4L2_FIELD_NONE)
+-		unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
+-
+-	v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
+-	if (mbus_fmt->code != fmt->code) {
+-		/* Sensor has returned an alternate format */
+-		fmt = find_format_by_code(mbus_fmt->code);
+-		if (!fmt) {
+-			/* The alternate format is one unicam can't support.
+-			 * Find the first format that is supported by both, and
+-			 * then set that.
+-			 */
+-			fmt = get_first_supported_format(dev);
+-			mbus_fmt->code = fmt->code;
+-
+-			ret = v4l2_subdev_call(dev->sensor, pad, set_fmt,
+-					       dev->sensor_config, &sd_fmt);
+-			if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+-				return ret;
+-
+-			if (mbus_fmt->field != V4L2_FIELD_NONE)
+-				unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
+-
+-			v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
+-
+-			if (mbus_fmt->code != fmt->code) {
+-				/* We've set a format that the sensor reports
+-				 * as being supported, but it refuses to set it.
+-				 * Not much else we can do.
+-				 * Assume that the sensor driver may accept the
+-				 * format when it is set (rather than tried).
+-				 */
+-				unicam_err(dev, "Sensor won't accept default format, and Unicam can't support sensor default\n");
+-			}
+-		}
+-
+-		if (fmt->fourcc)
+-			f->fmt.pix.pixelformat = fmt->fourcc;
+-		else
+-			f->fmt.pix.pixelformat = fmt->repacked_fourcc;
+-	}
+-
+-	return unicam_calc_format_size_bpl(dev, fmt, f);
+-}
+-
+-static int unicam_s_fmt_vid_cap(struct file *file, void *priv,
+-				struct v4l2_format *f)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct vb2_queue *q = &node->buffer_queue;
+-	struct v4l2_mbus_framefmt mbus_fmt = {0};
+-	const struct unicam_fmt *fmt;
+-	int ret;
+-
+-	if (vb2_is_busy(q))
+-		return -EBUSY;
+-
+-	ret = unicam_try_fmt_vid_cap(file, priv, f);
+-	if (ret < 0)
+-		return ret;
+-
+-	fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
+-	if (!fmt) {
+-		/* Unknown pixel format - adopt a default.
+-		 * This shouldn't happen as try_fmt should have resolved any
+-		 * issues first.
+-		 */
+-		fmt = get_first_supported_format(dev);
+-		if (!fmt)
+-			/* It shouldn't be possible to get here with no
+-			 * supported formats
+-			 */
+-			return -EINVAL;
+-		f->fmt.pix.pixelformat = fmt->fourcc;
+-		return -EINVAL;
+-	}
+-
+-	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
+-
+-	ret = __subdev_set_format(dev, &mbus_fmt, node->pad_id);
+-	if (ret) {
+-		unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
+-			   __func__, ret);
+-		return ret;
+-	}
+-
+-	/* Just double check nothing has gone wrong */
+-	if (mbus_fmt.code != fmt->code) {
+-		unicam_dbg(3, dev,
+-			   "%s subdev changed format on us, this should not happen\n",
+-			   __func__);
+-		return -EINVAL;
+-	}
+-
+-	node->fmt = fmt;
+-	node->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
+-	node->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
+-	unicam_reset_format(node);
+-
+-	unicam_dbg(3, dev,
+-		   "%s %dx%d, mbus_fmt 0x%08X, V4L2 pix 0x%08X.\n",
+-		   __func__, node->v_fmt.fmt.pix.width,
+-		   node->v_fmt.fmt.pix.height, mbus_fmt.code,
+-		   node->v_fmt.fmt.pix.pixelformat);
+-
+-	*f = node->v_fmt;
+-
+-	return 0;
+-}
+-
+-static int unicam_enum_fmt_meta_cap(struct file *file, void *priv,
+-				    struct v4l2_fmtdesc *f)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev_mbus_code_enum mbus_code;
+-	const struct unicam_fmt *fmt = NULL;
+-	int ret = 0;
+-
+-	if (node->pad_id != METADATA_PAD || f->index != 0)
+-		return -EINVAL;
+-
+-	if (dev->sensor_embedded_data) {
+-		memset(&mbus_code, 0, sizeof(mbus_code));
+-		mbus_code.index = f->index;
+-		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+-		mbus_code.pad = METADATA_PAD;
+-
+-		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
+-				       &mbus_code);
+-		if (ret < 0) {
+-			unicam_dbg(2, dev,
+-				   "subdev->enum_mbus_code idx 0 returned %d - index invalid\n",
+-				   ret);
+-			return -EINVAL;
+-		}
+-	} else {
+-		mbus_code.code = MEDIA_BUS_FMT_SENSOR_DATA;
+-	}
+-
+-	fmt = find_format_by_code(mbus_code.code);
+-	if (fmt)
+-		f->pixelformat = fmt->fourcc;
+-
+-	return 0;
+-}
+-
+-static int unicam_g_fmt_meta_cap(struct file *file, void *priv,
+-				 struct v4l2_format *f)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-
+-	if (node->pad_id != METADATA_PAD)
+-		return -EINVAL;
+-
+-	*f = node->v_fmt;
+-
+-	return 0;
+-}
+-
+-static int unicam_try_fmt_meta_cap(struct file *file, void *priv,
+-				   struct v4l2_format *f)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-
+-	if (node->pad_id != METADATA_PAD)
+-		return -EINVAL;
+-
+-	*f = node->v_fmt;
+-
+-	return 0;
+-}
+-
+-static int unicam_s_fmt_meta_cap(struct file *file, void *priv,
+-				 struct v4l2_format *f)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_mbus_framefmt mbus_fmt = { 0 };
+-	const struct unicam_fmt *fmt;
+-	int ret;
+-
+-	if (node->pad_id == IMAGE_PAD)
+-		return -EINVAL;
+-
+-	if (dev->sensor_embedded_data) {
+-		fmt = find_format_by_pix(dev, f->fmt.meta.dataformat);
+-		if (!fmt) {
+-			unicam_err(dev, "unknown format: V4L2 pix 0x%08x\n",
+-				   f->fmt.meta.dataformat);
+-			return -EINVAL;
+-		}
+-		mbus_fmt.code = fmt->code;
+-		ret = __subdev_set_format(dev, &mbus_fmt, node->pad_id);
+-		if (ret) {
+-			unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
+-				   __func__, ret);
+-			return ret;
+-		}
+-	}
+-
+-	*f = node->v_fmt;
+-
+-	unicam_dbg(3, dev, "%s size %d, V4L2 pix 0x%08x\n",
+-		   __func__, node->v_fmt.fmt.meta.buffersize,
+-		   node->v_fmt.fmt.meta.dataformat);
+-
+-	return 0;
+-}
+-
+-static int unicam_queue_setup(struct vb2_queue *vq,
+-			      unsigned int *nbuffers,
+-			      unsigned int *nplanes,
+-			      unsigned int sizes[],
+-			      struct device *alloc_devs[])
+-{
+-	struct unicam_node *node = vb2_get_drv_priv(vq);
+-	struct unicam_device *dev = node->dev;
+-	unsigned int size = node->pad_id == IMAGE_PAD ?
+-				    node->v_fmt.fmt.pix.sizeimage :
+-				    node->v_fmt.fmt.meta.buffersize;
+-
+-	if (vq->num_buffers + *nbuffers < 3)
+-		*nbuffers = 3 - vq->num_buffers;
+-
+-	if (*nplanes) {
+-		if (sizes[0] < size) {
+-			unicam_err(dev, "sizes[0] %i < size %u\n", sizes[0],
+-				   size);
+-			return -EINVAL;
+-		}
+-		size = sizes[0];
+-	}
+-
+-	*nplanes = 1;
+-	sizes[0] = size;
+-
+-	return 0;
+-}
+-
+-static int unicam_buffer_prepare(struct vb2_buffer *vb)
+-{
+-	struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
+-	struct unicam_device *dev = node->dev;
+-	struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
+-					      vb.vb2_buf);
+-	unsigned long size;
+-
+-	if (WARN_ON(!node->fmt))
+-		return -EINVAL;
+-
+-	size = node->pad_id == IMAGE_PAD ? node->v_fmt.fmt.pix.sizeimage :
+-					   node->v_fmt.fmt.meta.buffersize;
+-	if (vb2_plane_size(vb, 0) < size) {
+-		unicam_err(dev, "data will not fit into plane (%lu < %lu)\n",
+-			   vb2_plane_size(vb, 0), size);
+-		return -EINVAL;
+-	}
+-
+-	vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
+-	return 0;
+-}
+-
+-static void unicam_buffer_queue(struct vb2_buffer *vb)
+-{
+-	struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
+-	struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
+-					      vb.vb2_buf);
+-	struct unicam_dmaqueue *dma_queue = &node->dma_queue;
+-	unsigned long flags = 0;
+-
+-	spin_lock_irqsave(&node->dma_queue_lock, flags);
+-	list_add_tail(&buf->list, &dma_queue->active);
+-	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+-}
+-
+-static void unicam_set_packing_config(struct unicam_device *dev)
+-{
+-	int pack, unpack;
+-	u32 val;
+-
+-	if (dev->node[IMAGE_PAD].v_fmt.fmt.pix.pixelformat ==
+-	    dev->node[IMAGE_PAD].fmt->fourcc) {
+-		unpack = UNICAM_PUM_NONE;
+-		pack = UNICAM_PPM_NONE;
+-	} else {
+-		switch (dev->node[IMAGE_PAD].fmt->depth) {
+-		case 8:
+-			unpack = UNICAM_PUM_UNPACK8;
+-			break;
+-		case 10:
+-			unpack = UNICAM_PUM_UNPACK10;
+-			break;
+-		case 12:
+-			unpack = UNICAM_PUM_UNPACK12;
+-			break;
+-		case 14:
+-			unpack = UNICAM_PUM_UNPACK14;
+-			break;
+-		case 16:
+-			unpack = UNICAM_PUM_UNPACK16;
+-			break;
+-		default:
+-			unpack = UNICAM_PUM_NONE;
+-			break;
+-		}
+-
+-		/* Repacking is always to 16bpp */
+-		pack = UNICAM_PPM_PACK16;
+-	}
+-
+-	val = 0;
+-	set_field(&val, unpack, UNICAM_PUM_MASK);
+-	set_field(&val, pack, UNICAM_PPM_MASK);
+-	reg_write(&dev->cfg, UNICAM_IPIPE, val);
+-}
+-
+-static void unicam_cfg_image_id(struct unicam_device *dev)
+-{
+-	struct unicam_cfg *cfg = &dev->cfg;
+-
+-	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+-		/* CSI2 mode */
+-		reg_write(cfg, UNICAM_IDI0,
+-			  (dev->virtual_channel << 6) |
+-					      dev->node[IMAGE_PAD].fmt->csi_dt);
+-	} else {
+-		/* CCP2 mode */
+-		reg_write(cfg, UNICAM_IDI0,
+-			  0x80 | dev->node[IMAGE_PAD].fmt->csi_dt);
+-	}
+-}
+-
+-static void unicam_enable_ed(struct unicam_device *dev)
+-{
+-	struct unicam_cfg *cfg = &dev->cfg;
+-	u32 val = reg_read(cfg, UNICAM_DCS);
+-
+-	set_field(&val, 2, UNICAM_EDL_MASK);
+-	/* Do not wrap at the end of the embedded data buffer */
+-	set_field(&val, 0, UNICAM_DBOB);
+-
+-	reg_write(cfg, UNICAM_DCS, val);
+-}
+-
+-static void unicam_start_rx(struct unicam_device *dev, dma_addr_t *addr)
+-{
+-	struct unicam_cfg *cfg = &dev->cfg;
+-	int line_int_freq = dev->node[IMAGE_PAD].v_fmt.fmt.pix.height >> 2;
+-	unsigned int size, i;
+-	u32 val;
+-
+-	if (line_int_freq < 128)
+-		line_int_freq = 128;
+-
+-	/* Enable lane clocks */
+-	val = 1;
+-	for (i = 0; i < dev->active_data_lanes; i++)
+-		val = val << 2 | 1;
+-	clk_write(cfg, val);
+-
+-	/* Basic init */
+-	reg_write(cfg, UNICAM_CTRL, UNICAM_MEM);
+-
+-	/* Enable analogue control, and leave in reset. */
+-	val = UNICAM_AR;
+-	set_field(&val, 7, UNICAM_CTATADJ_MASK);
+-	set_field(&val, 7, UNICAM_PTATADJ_MASK);
+-	reg_write(cfg, UNICAM_ANA, val);
+-	usleep_range(1000, 2000);
+-
+-	/* Come out of reset */
+-	reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_AR);
+-
+-	/* Peripheral reset */
+-	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
+-	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
+-
+-	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
+-
+-	/* Enable Rx control. */
+-	val = reg_read(cfg, UNICAM_CTRL);
+-	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+-		set_field(&val, UNICAM_CPM_CSI2, UNICAM_CPM_MASK);
+-		set_field(&val, UNICAM_DCM_STROBE, UNICAM_DCM_MASK);
+-	} else {
+-		set_field(&val, UNICAM_CPM_CCP2, UNICAM_CPM_MASK);
+-		set_field(&val, dev->bus_flags, UNICAM_DCM_MASK);
+-	}
+-	/* Packet framer timeout */
+-	set_field(&val, 0xf, UNICAM_PFT_MASK);
+-	set_field(&val, 128, UNICAM_OET_MASK);
+-	reg_write(cfg, UNICAM_CTRL, val);
+-
+-	reg_write(cfg, UNICAM_IHWIN, 0);
+-	reg_write(cfg, UNICAM_IVWIN, 0);
+-
+-	/* AXI bus access QoS setup */
+-	val = reg_read(&dev->cfg, UNICAM_PRI);
+-	set_field(&val, 0, UNICAM_BL_MASK);
+-	set_field(&val, 0, UNICAM_BS_MASK);
+-	set_field(&val, 0xe, UNICAM_PP_MASK);
+-	set_field(&val, 8, UNICAM_NP_MASK);
+-	set_field(&val, 2, UNICAM_PT_MASK);
+-	set_field(&val, 1, UNICAM_PE);
+-	reg_write(cfg, UNICAM_PRI, val);
+-
+-	reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_DDL);
+-
+-	/* Always start in trigger frame capture mode (UNICAM_FCM set) */
+-	val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM | UNICAM_IBOB;
+-	set_field(&val,  line_int_freq, UNICAM_LCIE_MASK);
+-	reg_write(cfg, UNICAM_ICTL, val);
+-	reg_write(cfg, UNICAM_STA, UNICAM_STA_MASK_ALL);
+-	reg_write(cfg, UNICAM_ISTA, UNICAM_ISTA_MASK_ALL);
+-
+-	/* tclk_term_en */
+-	reg_write_field(cfg, UNICAM_CLT, 2, UNICAM_CLT1_MASK);
+-	/* tclk_settle */
+-	reg_write_field(cfg, UNICAM_CLT, 6, UNICAM_CLT2_MASK);
+-	/* td_term_en */
+-	reg_write_field(cfg, UNICAM_DLT, 2, UNICAM_DLT1_MASK);
+-	/* ths_settle */
+-	reg_write_field(cfg, UNICAM_DLT, 6, UNICAM_DLT2_MASK);
+-	/* trx_enable */
+-	reg_write_field(cfg, UNICAM_DLT, 0, UNICAM_DLT3_MASK);
+-
+-	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_SOE);
+-
+-	/* Packet compare setup - required to avoid missing frame ends */
+-	val = 0;
+-	set_field(&val, 1, UNICAM_PCE);
+-	set_field(&val, 1, UNICAM_GI);
+-	set_field(&val, 1, UNICAM_CPH);
+-	set_field(&val, 0, UNICAM_PCVC_MASK);
+-	set_field(&val, 1, UNICAM_PCDT_MASK);
+-	reg_write(cfg, UNICAM_CMP0, val);
+-
+-	/* Enable clock lane and set up terminations */
+-	val = 0;
+-	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+-		/* CSI2 */
+-		set_field(&val, 1, UNICAM_CLE);
+-		set_field(&val, 1, UNICAM_CLLPE);
+-		if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
+-			set_field(&val, 1, UNICAM_CLTRE);
+-			set_field(&val, 1, UNICAM_CLHSE);
+-		}
+-	} else {
+-		/* CCP2 */
+-		set_field(&val, 1, UNICAM_CLE);
+-		set_field(&val, 1, UNICAM_CLHSE);
+-		set_field(&val, 1, UNICAM_CLTRE);
+-	}
+-	reg_write(cfg, UNICAM_CLK, val);
+-
+-	/*
+-	 * Enable required data lanes with appropriate terminations.
+-	 * The same value needs to be written to UNICAM_DATn registers for
+-	 * the active lanes, and 0 for inactive ones.
+-	 */
+-	val = 0;
+-	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+-		/* CSI2 */
+-		set_field(&val, 1, UNICAM_DLE);
+-		set_field(&val, 1, UNICAM_DLLPE);
+-		if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
+-			set_field(&val, 1, UNICAM_DLTRE);
+-			set_field(&val, 1, UNICAM_DLHSE);
+-		}
+-	} else {
+-		/* CCP2 */
+-		set_field(&val, 1, UNICAM_DLE);
+-		set_field(&val, 1, UNICAM_DLHSE);
+-		set_field(&val, 1, UNICAM_DLTRE);
+-	}
+-	reg_write(cfg, UNICAM_DAT0, val);
+-
+-	if (dev->active_data_lanes == 1)
+-		val = 0;
+-	reg_write(cfg, UNICAM_DAT1, val);
+-
+-	if (dev->max_data_lanes > 2) {
+-		/*
+-		 * Registers UNICAM_DAT2 and UNICAM_DAT3 only valid if the
+-		 * instance supports more than 2 data lanes.
+-		 */
+-		if (dev->active_data_lanes == 2)
+-			val = 0;
+-		reg_write(cfg, UNICAM_DAT2, val);
+-
+-		if (dev->active_data_lanes == 3)
+-			val = 0;
+-		reg_write(cfg, UNICAM_DAT3, val);
+-	}
+-
+-	reg_write(&dev->cfg, UNICAM_IBLS,
+-		  dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline);
+-	size = dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage;
+-	unicam_wr_dma_addr(&dev->cfg, addr[IMAGE_PAD], size, IMAGE_PAD);
+-	unicam_set_packing_config(dev);
+-	unicam_cfg_image_id(dev);
+-
+-	val = reg_read(cfg, UNICAM_MISC);
+-	set_field(&val, 1, UNICAM_FL0);
+-	set_field(&val, 1, UNICAM_FL1);
+-	reg_write(cfg, UNICAM_MISC, val);
+-
+-	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data) {
+-		size = dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
+-		unicam_enable_ed(dev);
+-		unicam_wr_dma_addr(&dev->cfg, addr[METADATA_PAD], size,
+-				   METADATA_PAD);
+-	}
+-
+-	/* Enable peripheral */
+-	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPE);
+-
+-	/* Load image pointers */
+-	reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_LIP_MASK);
+-
+-	/* Load embedded data buffer pointers if needed */
+-	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data)
+-		reg_write_field(cfg, UNICAM_DCS, 1, UNICAM_LDP);
+-
+-	/*
+-	 * Enable trigger only for the first frame to
+-	 * sync correctly to the FS from the source.
+-	 */
+-	reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_TFC);
+-}
+-
+-static void unicam_disable(struct unicam_device *dev)
+-{
+-	struct unicam_cfg *cfg = &dev->cfg;
+-
+-	/* Analogue lane control disable */
+-	reg_write_field(cfg, UNICAM_ANA, 1, UNICAM_DDL);
+-
+-	/* Stop the output engine */
+-	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_SOE);
+-
+-	/* Disable the data lanes. */
+-	reg_write(cfg, UNICAM_DAT0, 0);
+-	reg_write(cfg, UNICAM_DAT1, 0);
+-
+-	if (dev->max_data_lanes > 2) {
+-		reg_write(cfg, UNICAM_DAT2, 0);
+-		reg_write(cfg, UNICAM_DAT3, 0);
+-	}
+-
+-	/* Peripheral reset */
+-	reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
+-	usleep_range(50, 100);
+-	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
+-
+-	/* Disable peripheral */
+-	reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
+-
+-	/* Clear ED setup */
+-	reg_write(cfg, UNICAM_DCS, 0);
+-
+-	/* Disable all lane clocks */
+-	clk_write(cfg, 0);
+-}
+-
+-static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count)
+-{
+-	struct unicam_node *node = vb2_get_drv_priv(vq);
+-	struct unicam_device *dev = node->dev;
+-	struct unicam_buffer *buf;
+-	dma_addr_t buffer_addr[MAX_NODES] = { 0 };
+-	int num_nodes_streaming;
+-	unsigned long flags;
+-	int ret, i;
+-
+-	node->streaming = 1;
+-	if (!unicam_all_nodes_streaming(dev)) {
+-		unicam_dbg(3, dev, "Not all nodes are streaming yet.");
+-		return 0;
+-	}
+-
+-	dev->sequence = 0;
+-	ret = unicam_runtime_get(dev);
+-	if (ret < 0) {
+-		unicam_dbg(3, dev, "unicam_runtime_get failed\n");
+-		return ret;
+-	}
+-
+-	dev->active_data_lanes = dev->max_data_lanes;
+-	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY &&
+-	    v4l2_subdev_has_op(dev->sensor, video, g_mbus_config)) {
+-		struct v4l2_mbus_config mbus_config;
+-
+-		ret = v4l2_subdev_call(dev->sensor, video, g_mbus_config,
+-				       &mbus_config);
+-		if (ret < 0) {
+-			unicam_dbg(3, dev, "g_mbus_config failed\n");
+-			goto err_pm_put;
+-		}
+-
+-		dev->active_data_lanes =
+-			(mbus_config.flags & V4L2_MBUS_CSI2_LANE_MASK) >>
+-					__ffs(V4L2_MBUS_CSI2_LANE_MASK);
+-		if (!dev->active_data_lanes)
+-			dev->active_data_lanes = dev->max_data_lanes;
+-	}
+-	if (dev->active_data_lanes > dev->max_data_lanes) {
+-		unicam_err(dev,	"Device has requested %u data lanes, which is >%u configured in DT\n",
+-			   dev->active_data_lanes, dev->max_data_lanes);
+-		ret = -EINVAL;
+-		goto err_pm_put;
+-	}
+-
+-	unicam_dbg(1, dev, "Running with %u data lanes\n",
+-		   dev->active_data_lanes);
+-
+-	ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
+-	if (ret) {
+-		unicam_err(dev, "failed to set up clock\n");
+-		goto err_pm_put;
+-	}
+-
+-	ret = clk_prepare_enable(dev->clock);
+-	if (ret) {
+-		unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
+-		goto err_pm_put;
+-	}
+-
+-	num_nodes_streaming = unicam_num_nodes_streaming(dev);
+-	for (i = 0; i < num_nodes_streaming; i++) {
+-		spin_lock_irqsave(&dev->node[i].dma_queue_lock, flags);
+-		buf = list_entry(dev->node[i].dma_queue.active.next,
+-				 struct unicam_buffer, list);
+-		dev->node[i].cur_frm = buf;
+-		dev->node[i].next_frm = buf;
+-		list_del(&buf->list);
+-		spin_unlock_irqrestore(&dev->node[i].dma_queue_lock, flags);
+-		buffer_addr[i] =
+-		vb2_dma_contig_plane_dma_addr(&dev->node[i].cur_frm->vb.vb2_buf,
+-					      0);
+-	}
+-
+-	unicam_start_rx(dev, buffer_addr);
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, s_stream, 1);
+-	if (ret < 0) {
+-		unicam_err(dev, "stream on failed in subdev\n");
+-		goto err_disable_unicam;
+-	}
+-
+-	return 0;
+-
+-err_disable_unicam:
+-	node->streaming = 0;
+-	unicam_disable(dev);
+-	clk_disable_unprepare(dev->clock);
+-err_pm_put:
+-	unicam_runtime_put(dev);
+-
+-	return ret;
+-}
+-
+-static void unicam_stop_streaming(struct vb2_queue *vq)
+-{
+-	struct unicam_node *node = vb2_get_drv_priv(vq);
+-	struct unicam_device *dev = node->dev;
+-	struct unicam_dmaqueue *dma_q = &node->dma_queue;
+-	struct unicam_buffer *buf, *tmp;
+-	unsigned long flags;
+-
+-	node->streaming = 0;
+-
+-	if (node->pad_id == IMAGE_PAD) {
+-		/* Stop streaming the sensor and disable the peripheral.
+-		 * We cannot continue streaming embedded data with the
+-		 * image pad disabled.
+-		 */
+-		if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
+-			unicam_err(dev, "stream off failed in subdev\n");
+-
+-		unicam_disable(dev);
+-		clk_disable_unprepare(dev->clock);
+-		unicam_runtime_put(dev);
+-
+-	} else if (node->pad_id == METADATA_PAD) {
+-		/* Allow the hardware to spin in the dummy buffer.
+-		 * This is only really needed if the embedded data pad is
+-		 * disabled before the image pad.  The 0x3 in the top two bits
+-		 * signifies uncached accesses through the Videocore memory
+-		 * controller.
+-		 */
+-		unicam_wr_dma_addr(&dev->cfg, node->dummy_buf_dma_addr,
+-				   DUMMY_BUF_SIZE, METADATA_PAD);
+-	}
+-
+-	/* Clear all queued buffers for the node */
+-	spin_lock_irqsave(&node->dma_queue_lock, flags);
+-	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
+-		list_del(&buf->list);
+-		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+-	}
+-
+-	if (node->cur_frm)
+-		vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
+-				VB2_BUF_STATE_ERROR);
+-	if (node->next_frm && node->cur_frm != node->next_frm)
+-		vb2_buffer_done(&node->next_frm->vb.vb2_buf,
+-				VB2_BUF_STATE_ERROR);
+-
+-	node->cur_frm = NULL;
+-	node->next_frm = NULL;
+-	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+-}
+-
+-static int unicam_enum_input(struct file *file, void *priv,
+-			     struct v4l2_input *inp)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	if (inp->index != 0)
+-		return -EINVAL;
+-
+-	inp->type = V4L2_INPUT_TYPE_CAMERA;
+-	if (v4l2_subdev_has_op(dev->sensor, video, s_dv_timings)) {
+-		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
+-		inp->std = 0;
+-	} else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
+-		inp->capabilities = V4L2_IN_CAP_STD;
+-		if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std)
+-					< 0)
+-			inp->std = V4L2_STD_ALL;
+-	} else {
+-		inp->capabilities = 0;
+-		inp->std = 0;
+-	}
+-	sprintf(inp->name, "Camera 0");
+-	return 0;
+-}
+-
+-static int unicam_g_input(struct file *file, void *priv, unsigned int *i)
+-{
+-	*i = 0;
+-
+-	return 0;
+-}
+-
+-static int unicam_s_input(struct file *file, void *priv, unsigned int i)
+-{
+-	/*
+-	 * FIXME: Ideally we would like to be able to query the source
+-	 * subdevice for information over the input connectors it supports,
+-	 * and map that through in to a call to video_ops->s_routing.
+-	 * There is no infrastructure support for defining that within
+-	 * devicetree at present. Until that is implemented we can't
+-	 * map a user physical connector number to s_routing input number.
+-	 */
+-	if (i > 0)
+-		return -EINVAL;
+-
+-	return 0;
+-}
+-
+-static int unicam_querystd(struct file *file, void *priv,
+-			   v4l2_std_id *std)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, querystd, std);
+-}
+-
+-static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, g_std, std);
+-}
+-
+-static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	int ret;
+-	v4l2_std_id current_std;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, g_std, &current_std);
+-	if (ret)
+-		return ret;
+-
+-	if (std == current_std)
+-		return 0;
+-
+-	if (vb2_is_busy(&node->buffer_queue))
+-		return -EBUSY;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
+-
+-	/* Force recomputation of bytesperline */
+-	node->v_fmt.fmt.pix.bytesperline = 0;
+-
+-	unicam_reset_format(node);
+-
+-	return ret;
+-}
+-
+-static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
+-}
+-
+-static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
+-}
+-
+-static int unicam_s_selection(struct file *file, void *priv,
+-			      struct v4l2_selection *sel)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev_selection sdsel = {
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.target = sel->target,
+-		.flags = sel->flags,
+-		.r = sel->r,
+-	};
+-
+-	return v4l2_subdev_call(dev->sensor, pad, set_selection, NULL, &sdsel);
+-}
+-
+-static int unicam_g_selection(struct file *file, void *priv,
+-			      struct v4l2_selection *sel)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev_selection sdsel = {
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.target = sel->target,
+-	};
+-	int ret;
+-
+-	ret = v4l2_subdev_call(dev->sensor, pad, get_selection, NULL, &sdsel);
+-	if (!ret)
+-		sel->r = sdsel.r;
+-
+-	return ret;
+-}
+-
+-static int unicam_enum_framesizes(struct file *file, void *priv,
+-				  struct v4l2_frmsizeenum *fsize)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	const struct unicam_fmt *fmt;
+-	struct v4l2_subdev_frame_size_enum fse;
+-	int ret;
+-
+-	if (node->pad_id == IMAGE_PAD) {
+-		/* check for valid format */
+-		fmt = find_format_by_pix(dev, fsize->pixel_format);
+-		if (!fmt) {
+-			unicam_dbg(3, dev, "Invalid pixel code: %x\n",
+-				   fsize->pixel_format);
+-			return -EINVAL;
+-		}
+-		fse.code = fmt->code;
+-	} else {
+-		/* This pad is for embedded data, so just set the format */
+-		fse.code = MEDIA_BUS_FMT_SENSOR_DATA;
+-	}
+-
+-	fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+-	fse.index = fsize->index;
+-	fse.pad = node->pad_id;
+-
+-	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
+-	if (ret)
+-		return ret;
+-
+-	unicam_dbg(1, dev, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
+-		   __func__, fse.index, fse.code, fse.min_width, fse.max_width,
+-		   fse.min_height, fse.max_height);
+-
+-	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+-	fsize->discrete.width = fse.max_width;
+-	fsize->discrete.height = fse.max_height;
+-
+-	return 0;
+-}
+-
+-static int unicam_enum_frameintervals(struct file *file, void *priv,
+-				      struct v4l2_frmivalenum *fival)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	const struct unicam_fmt *fmt;
+-	struct v4l2_subdev_frame_interval_enum fie = {
+-		.index = fival->index,
+-		.width = fival->width,
+-		.height = fival->height,
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-	};
+-	int ret;
+-
+-	fmt = find_format_by_pix(dev, fival->pixel_format);
+-	if (!fmt)
+-		return -EINVAL;
+-
+-	fie.code = fmt->code;
+-	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_interval,
+-			       NULL, &fie);
+-	if (ret)
+-		return ret;
+-
+-	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+-	fival->discrete = fie.interval;
+-
+-	return 0;
+-}
+-
+-static int unicam_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_g_parm_cap(video_devdata(file), dev->sensor, a);
+-}
+-
+-static int unicam_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_s_parm_cap(video_devdata(file), dev->sensor, a);
+-}
+-
+-static int unicam_g_dv_timings(struct file *file, void *priv,
+-			       struct v4l2_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
+-}
+-
+-static int unicam_s_dv_timings(struct file *file, void *priv,
+-			       struct v4l2_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_dv_timings current_timings;
+-	int ret;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
+-			       &current_timings);
+-
+-	if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
+-		return 0;
+-
+-	if (vb2_is_busy(&node->buffer_queue))
+-		return -EBUSY;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
+-
+-	/* Force recomputation of bytesperline */
+-	node->v_fmt.fmt.pix.bytesperline = 0;
+-
+-	unicam_reset_format(node);
+-
+-	return ret;
+-}
+-
+-static int unicam_query_dv_timings(struct file *file, void *priv,
+-				   struct v4l2_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
+-}
+-
+-static int unicam_enum_dv_timings(struct file *file, void *priv,
+-				  struct v4l2_enum_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
+-}
+-
+-static int unicam_dv_timings_cap(struct file *file, void *priv,
+-				 struct v4l2_dv_timings_cap *cap)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
+-}
+-
+-static int unicam_subscribe_event(struct v4l2_fh *fh,
+-				  const struct v4l2_event_subscription *sub)
+-{
+-	switch (sub->type) {
+-	case V4L2_EVENT_FRAME_SYNC:
+-		return v4l2_event_subscribe(fh, sub, 2, NULL);
+-	case V4L2_EVENT_SOURCE_CHANGE:
+-		return v4l2_event_subscribe(fh, sub, 4, NULL);
+-	}
+-
+-	return v4l2_ctrl_subscribe_event(fh, sub);
+-}
+-
+-static int unicam_log_status(struct file *file, void *fh)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct unicam_cfg *cfg = &dev->cfg;
+-	u32 reg;
+-
+-	/* status for sub devices */
+-	v4l2_device_call_all(&dev->v4l2_dev, 0, core, log_status);
+-
+-	unicam_info(dev, "-----Receiver status-----\n");
+-	unicam_info(dev, "V4L2 width/height:   %ux%u\n",
+-		    node->v_fmt.fmt.pix.width, node->v_fmt.fmt.pix.height);
+-	unicam_info(dev, "Mediabus format:     %08x\n", node->fmt->code);
+-	unicam_info(dev, "V4L2 format:         %08x\n",
+-		    node->v_fmt.fmt.pix.pixelformat);
+-	reg = reg_read(&dev->cfg, UNICAM_IPIPE);
+-	unicam_info(dev, "Unpacking/packing:   %u / %u\n",
+-		    get_field(reg, UNICAM_PUM_MASK),
+-		    get_field(reg, UNICAM_PPM_MASK));
+-	unicam_info(dev, "----Live data----\n");
+-	unicam_info(dev, "Programmed stride:   %4u\n",
+-		    reg_read(cfg, UNICAM_IBLS));
+-	unicam_info(dev, "Detected resolution: %ux%u\n",
+-		    reg_read(cfg, UNICAM_IHSTA),
+-		    reg_read(cfg, UNICAM_IVSTA));
+-	unicam_info(dev, "Write pointer:       %08x\n",
+-		    reg_read(cfg, UNICAM_IBWP));
+-
+-	return 0;
+-}
+-
+-static void unicam_notify(struct v4l2_subdev *sd,
+-			  unsigned int notification, void *arg)
+-{
+-	struct unicam_device *dev =
+-		container_of(sd->v4l2_dev, struct unicam_device, v4l2_dev);
+-
+-	switch (notification) {
+-	case V4L2_DEVICE_NOTIFY_EVENT:
+-		v4l2_event_queue(&dev->node[IMAGE_PAD].video_dev, arg);
+-		break;
+-	default:
+-		break;
+-	}
+-}
+-
+-static const struct vb2_ops unicam_video_qops = {
+-	.wait_prepare		= vb2_ops_wait_prepare,
+-	.wait_finish		= vb2_ops_wait_finish,
+-	.queue_setup		= unicam_queue_setup,
+-	.buf_prepare		= unicam_buffer_prepare,
+-	.buf_queue		= unicam_buffer_queue,
+-	.start_streaming	= unicam_start_streaming,
+-	.stop_streaming		= unicam_stop_streaming,
+-};
+-
+-/*
+- * unicam_open : This function is based on the v4l2_fh_open helper function.
+- * It has been augmented to handle sensor subdevice power management,
+- */
+-static int unicam_open(struct file *file)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	int ret;
+-
+-	mutex_lock(&node->lock);
+-
+-	ret = v4l2_fh_open(file);
+-	if (ret) {
+-		unicam_err(dev, "v4l2_fh_open failed\n");
+-		goto unlock;
+-	}
+-
+-	node->open++;
+-
+-	if (!v4l2_fh_is_singular_file(file))
+-		goto unlock;
+-
+-	ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
+-	if (ret < 0 && ret != -ENOIOCTLCMD) {
+-		v4l2_fh_release(file);
+-		node->open--;
+-		goto unlock;
+-	}
+-
+-	ret = 0;
+-
+-unlock:
+-	mutex_unlock(&node->lock);
+-	return ret;
+-}
+-
+-static int unicam_release(struct file *file)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev *sd = dev->sensor;
+-	bool fh_singular;
+-	int ret;
+-
+-	mutex_lock(&node->lock);
+-
+-	fh_singular = v4l2_fh_is_singular_file(file);
+-
+-	ret = _vb2_fop_release(file, NULL);
+-
+-	if (fh_singular)
+-		v4l2_subdev_call(sd, core, s_power, 0);
+-
+-	node->open--;
+-	mutex_unlock(&node->lock);
+-
+-	return ret;
+-}
+-
+-/* unicam capture driver file operations */
+-static const struct v4l2_file_operations unicam_fops = {
+-	.owner		= THIS_MODULE,
+-	.open           = unicam_open,
+-	.release        = unicam_release,
+-	.read		= vb2_fop_read,
+-	.poll		= vb2_fop_poll,
+-	.unlocked_ioctl	= video_ioctl2,
+-	.mmap		= vb2_fop_mmap,
+-};
+-
+-/* unicam capture ioctl operations */
+-static const struct v4l2_ioctl_ops unicam_ioctl_ops = {
+-	.vidioc_querycap		= unicam_querycap,
+-	.vidioc_enum_fmt_vid_cap	= unicam_enum_fmt_vid_cap,
+-	.vidioc_g_fmt_vid_cap		= unicam_g_fmt_vid_cap,
+-	.vidioc_s_fmt_vid_cap		= unicam_s_fmt_vid_cap,
+-	.vidioc_try_fmt_vid_cap		= unicam_try_fmt_vid_cap,
+-
+-	.vidioc_enum_fmt_meta_cap	= unicam_enum_fmt_meta_cap,
+-	.vidioc_g_fmt_meta_cap		= unicam_g_fmt_meta_cap,
+-	.vidioc_s_fmt_meta_cap		= unicam_s_fmt_meta_cap,
+-	.vidioc_try_fmt_meta_cap	= unicam_try_fmt_meta_cap,
+-
+-	.vidioc_enum_input		= unicam_enum_input,
+-	.vidioc_g_input			= unicam_g_input,
+-	.vidioc_s_input			= unicam_s_input,
+-
+-	.vidioc_querystd		= unicam_querystd,
+-	.vidioc_s_std			= unicam_s_std,
+-	.vidioc_g_std			= unicam_g_std,
+-
+-	.vidioc_g_edid			= unicam_g_edid,
+-	.vidioc_s_edid			= unicam_s_edid,
+-
+-	.vidioc_enum_framesizes		= unicam_enum_framesizes,
+-	.vidioc_enum_frameintervals	= unicam_enum_frameintervals,
+-
+-	.vidioc_g_selection		= unicam_g_selection,
+-	.vidioc_s_selection		= unicam_s_selection,
+-
+-	.vidioc_g_parm			= unicam_g_parm,
+-	.vidioc_s_parm			= unicam_s_parm,
+-
+-	.vidioc_s_dv_timings		= unicam_s_dv_timings,
+-	.vidioc_g_dv_timings		= unicam_g_dv_timings,
+-	.vidioc_query_dv_timings	= unicam_query_dv_timings,
+-	.vidioc_enum_dv_timings		= unicam_enum_dv_timings,
+-	.vidioc_dv_timings_cap		= unicam_dv_timings_cap,
+-
+-	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
+-	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
+-	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
+-	.vidioc_querybuf		= vb2_ioctl_querybuf,
+-	.vidioc_qbuf			= vb2_ioctl_qbuf,
+-	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
+-	.vidioc_expbuf			= vb2_ioctl_expbuf,
+-	.vidioc_streamon		= vb2_ioctl_streamon,
+-	.vidioc_streamoff		= vb2_ioctl_streamoff,
+-
+-	.vidioc_log_status		= unicam_log_status,
+-	.vidioc_subscribe_event		= unicam_subscribe_event,
+-	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+-};
+-
+-static int
+-unicam_async_bound(struct v4l2_async_notifier *notifier,
+-		   struct v4l2_subdev *subdev,
+-		   struct v4l2_async_subdev *asd)
+-{
+-	struct unicam_device *unicam = container_of(notifier->v4l2_dev,
+-					       struct unicam_device, v4l2_dev);
+-
+-	if (unicam->sensor) {
+-		unicam_info(unicam, "Rejecting subdev %s (Already set!!)",
+-			    subdev->name);
+-		return 0;
+-	}
+-
+-	unicam->sensor = subdev;
+-	unicam_dbg(1, unicam, "Using sensor %s for capture\n", subdev->name);
+-
+-	return 0;
+-}
+-
+-static int register_node(struct unicam_device *unicam, struct unicam_node *node,
+-			 enum v4l2_buf_type type, int pad_id)
+-{
+-	struct video_device *vdev;
+-	struct vb2_queue *q;
+-	struct v4l2_mbus_framefmt mbus_fmt = {0};
+-	const struct unicam_fmt *fmt;
+-	int ret;
+-
+-	if (unicam->sensor_embedded_data || pad_id != METADATA_PAD) {
+-		ret = __subdev_get_format(unicam, &mbus_fmt, pad_id);
+-		if (ret) {
+-			unicam_err(unicam, "Failed to get_format - ret %d\n",
+-				   ret);
+-			return ret;
+-		}
+-
+-		fmt = find_format_by_code(mbus_fmt.code);
+-		if (!fmt) {
+-			/* Find the first format that the sensor and unicam both
+-			 * support
+-			 */
+-			fmt = get_first_supported_format(unicam);
+-
+-			if (!fmt)
+-				/* No compatible formats */
+-				return -EINVAL;
+-
+-			mbus_fmt.code = fmt->code;
+-			ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
+-			if (ret)
+-				return -EINVAL;
+-		}
+-		if (mbus_fmt.field != V4L2_FIELD_NONE) {
+-			/* Interlaced not supported - disable it now. */
+-			mbus_fmt.field = V4L2_FIELD_NONE;
+-			ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
+-			if (ret)
+-				return -EINVAL;
+-		}
+-	} else {
+-		/* Fix this node format as embedded data. */
+-		fmt = find_format_by_code(MEDIA_BUS_FMT_SENSOR_DATA);
+-	}
+-
+-	node->dev = unicam;
+-	node->pad_id = pad_id;
+-	node->fmt = fmt;
+-	if (fmt->fourcc) {
+-		if (fmt->fourcc != V4L2_META_FMT_SENSOR_DATA)
+-			node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
+-		else
+-			node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
+-	} else {
+-		node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
+-	}
+-
+-	/* Read current subdev format */
+-	unicam_reset_format(node);
+-
+-	if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+-		v4l2_std_id tvnorms;
+-
+-		if (WARN_ON(!v4l2_subdev_has_op(unicam->sensor, video,
+-						g_tvnorms)))
+-			/*
+-			 * Subdevice should not advertise s_std but not
+-			 * g_tvnorms
+-			 */
+-			return -EINVAL;
+-
+-		ret = v4l2_subdev_call(unicam->sensor, video,
+-				       g_tvnorms, &tvnorms);
+-		if (WARN_ON(ret))
+-			return -EINVAL;
+-		node->video_dev.tvnorms |= tvnorms;
+-	}
+-
+-	spin_lock_init(&node->dma_queue_lock);
+-	mutex_init(&node->lock);
+-
+-	vdev = &node->video_dev;
+-	if (pad_id == IMAGE_PAD) {
+-		/* Add controls from the subdevice */
+-		ret = v4l2_ctrl_add_handler(&node->ctrl_handler,
+-					    unicam->sensor->ctrl_handler, NULL,
+-					    true);
+-		if (ret < 0)
+-			return ret;
+-
+-		/*
+-		 * If the sensor subdevice has any controls, associate the node
+-		 *  with the ctrl handler to allow access from userland.
+-		 */
+-		if (!list_empty(&node->ctrl_handler.ctrls))
+-			vdev->ctrl_handler = &node->ctrl_handler;
+-	}
+-
+-	q = &node->buffer_queue;
+-	q->type = type;
+-	q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
+-	q->drv_priv = node;
+-	q->ops = &unicam_video_qops;
+-	q->mem_ops = &vb2_dma_contig_memops;
+-	q->buf_struct_size = sizeof(struct unicam_buffer);
+-	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+-	q->lock = &node->lock;
+-	q->min_buffers_needed = 1;
+-	q->dev = &unicam->pdev->dev;
+-
+-	ret = vb2_queue_init(q);
+-	if (ret) {
+-		unicam_err(unicam, "vb2_queue_init() failed\n");
+-		return ret;
+-	}
+-
+-	INIT_LIST_HEAD(&node->dma_queue.active);
+-
+-	vdev->release = video_device_release_empty;
+-	vdev->fops = &unicam_fops;
+-	vdev->ioctl_ops = &unicam_ioctl_ops;
+-	vdev->v4l2_dev = &unicam->v4l2_dev;
+-	vdev->vfl_dir = VFL_DIR_RX;
+-	vdev->queue = q;
+-	vdev->lock = &node->lock;
+-	vdev->device_caps = (pad_id == IMAGE_PAD) ?
+-			    (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING) :
+-			    (V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING);
+-
+-	/* Define the device names */
+-	snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME,
+-		 node->pad_id == IMAGE_PAD ? "image" : "embedded");
+-
+-	video_set_drvdata(vdev, node);
+-	vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
+-
+-	node->dummy_buf_cpu_addr = dma_alloc_coherent(&unicam->pdev->dev,
+-						      DUMMY_BUF_SIZE,
+-						      &node->dummy_buf_dma_addr,
+-						      GFP_ATOMIC);
+-	if (!node->dummy_buf_cpu_addr) {
+-		unicam_err(unicam, "Unable to allocate dummy buffer.\n");
+-		return -ENOMEM;
+-	}
+-
+-	if (node->pad_id == METADATA_PAD) {
+-		v4l2_disable_ioctl(vdev, VIDIOC_DQEVENT);
+-		v4l2_disable_ioctl(vdev, VIDIOC_SUBSCRIBE_EVENT);
+-		v4l2_disable_ioctl(vdev, VIDIOC_UNSUBSCRIBE_EVENT);
+-	}
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_STD);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUMSTD);
+-	}
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, querystd))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_EDID);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_EDID);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_DV_TIMINGS_CAP);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_DV_TIMINGS);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_DV_TIMINGS);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_DV_TIMINGS);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERY_DV_TIMINGS);
+-	}
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
+-		v4l2_disable_ioctl(&node->video_dev,
+-				   VIDIOC_ENUM_FRAMEINTERVALS);
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
+-
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_FRAMESIZES);
+-
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, set_selection))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_SELECTION);
+-
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, get_selection))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_SELECTION);
+-
+-	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+-	if (ret) {
+-		unicam_err(unicam, "Unable to register video device.\n");
+-		return ret;
+-	}
+-	node->registered = 1;
+-
+-	if (unicam->sensor_embedded_data) {
+-		ret = media_create_pad_link(&unicam->sensor->entity, pad_id,
+-					    &node->video_dev.entity, 0,
+-					    MEDIA_LNK_FL_ENABLED |
+-					    MEDIA_LNK_FL_IMMUTABLE);
+-		if (ret)
+-			unicam_err(unicam, "Unable to create pad links.\n");
+-	}
+-
+-	return ret;
+-}
+-
+-static void unregister_nodes(struct unicam_device *unicam)
+-{
+-	struct unicam_node *node;
+-	int i;
+-
+-	for (i = 0; i < MAX_NODES; i++) {
+-		node = &unicam->node[i];
+-		if (node->dummy_buf_cpu_addr) {
+-			dma_free_coherent(&unicam->pdev->dev, DUMMY_BUF_SIZE,
+-					  node->dummy_buf_cpu_addr,
+-					  node->dummy_buf_dma_addr);
+-		}
+-		if (node->registered) {
+-			video_unregister_device(&node->video_dev);
+-			node->registered = 0;
+-		}
+-	}
+-}
+-
+-static int unicam_probe_complete(struct unicam_device *unicam)
+-{
+-	int ret;
+-
+-	v4l2_set_subdev_hostdata(unicam->sensor, unicam);
+-
+-	unicam->v4l2_dev.notify = unicam_notify;
+-
+-	unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
+-	if (!unicam->sensor_config)
+-		return -ENOMEM;
+-
+-	unicam->sensor_embedded_data = (unicam->sensor->entity.num_pads >= 2);
+-
+-	ret = register_node(unicam, &unicam->node[IMAGE_PAD],
+-			    V4L2_BUF_TYPE_VIDEO_CAPTURE, IMAGE_PAD);
+-	if (ret) {
+-		unicam_err(unicam, "Unable to register subdev node 0.\n");
+-		goto unregister;
+-	}
+-
+-	ret = register_node(unicam, &unicam->node[METADATA_PAD],
+-			    V4L2_BUF_TYPE_META_CAPTURE, METADATA_PAD);
+-	if (ret) {
+-		unicam_err(unicam, "Unable to register subdev node 1.\n");
+-		goto unregister;
+-	}
+-
+-	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
+-	if (ret) {
+-		unicam_err(unicam, "Unable to register subdev nodes.\n");
+-		goto unregister;
+-	}
+-
+-	return 0;
+-
+-unregister:
+-	unregister_nodes(unicam);
+-
+-	return ret;
+-}
+-
+-static int unicam_async_complete(struct v4l2_async_notifier *notifier)
+-{
+-	struct unicam_device *unicam = container_of(notifier->v4l2_dev,
+-					struct unicam_device, v4l2_dev);
+-
+-	return unicam_probe_complete(unicam);
+-}
+-
+-static const struct v4l2_async_notifier_operations unicam_async_ops = {
+-	.bound = unicam_async_bound,
+-	.complete = unicam_async_complete,
+-};
+-
+-static int of_unicam_connect_subdevs(struct unicam_device *dev)
+-{
+-	struct platform_device *pdev = dev->pdev;
+-	struct device_node *parent, *ep_node = NULL, *remote_ep = NULL,
+-			*sensor_node = NULL;
+-	struct v4l2_fwnode_endpoint *ep;
+-	struct v4l2_async_subdev *asd;
+-	unsigned int peripheral_data_lanes;
+-	int ret = -EINVAL;
+-	unsigned int lane;
+-
+-	parent = pdev->dev.of_node;
+-
+-	asd = &dev->asd;
+-	ep = &dev->endpoint;
+-
+-	ep_node = of_graph_get_next_endpoint(parent, NULL);
+-	if (!ep_node) {
+-		unicam_dbg(3, dev, "can't get next endpoint\n");
+-		goto cleanup_exit;
+-	}
+-
+-	unicam_dbg(3, dev, "ep_node is %s\n", ep_node->name);
+-
+-	v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_node), ep);
+-
+-	for (lane = 0; lane < ep->bus.mipi_csi2.num_data_lanes; lane++) {
+-		if (ep->bus.mipi_csi2.data_lanes[lane] != lane + 1) {
+-			unicam_err(dev, "Local endpoint - data lane reordering not supported\n");
+-			goto cleanup_exit;
+-		}
+-	}
+-
+-	peripheral_data_lanes = ep->bus.mipi_csi2.num_data_lanes;
+-
+-	sensor_node = of_graph_get_remote_port_parent(ep_node);
+-	if (!sensor_node) {
+-		unicam_dbg(3, dev, "can't get remote parent\n");
+-		goto cleanup_exit;
+-	}
+-	unicam_dbg(3, dev, "sensor_node is %s\n", sensor_node->name);
+-	asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
+-	asd->match.fwnode = of_fwnode_handle(sensor_node);
+-
+-	remote_ep = of_graph_get_remote_endpoint(ep_node);
+-	if (!remote_ep) {
+-		unicam_dbg(3, dev, "can't get remote-endpoint\n");
+-		goto cleanup_exit;
+-	}
+-	unicam_dbg(3, dev, "remote_ep is %s\n", remote_ep->name);
+-	v4l2_fwnode_endpoint_parse(of_fwnode_handle(remote_ep), ep);
+-	unicam_dbg(3, dev, "parsed remote_ep to endpoint. nr_of_link_frequencies %u, bus_type %u\n",
+-		   ep->nr_of_link_frequencies, ep->bus_type);
+-
+-	switch (ep->bus_type) {
+-	case V4L2_MBUS_CSI2_DPHY:
+-		if (ep->bus.mipi_csi2.num_data_lanes >
+-				peripheral_data_lanes) {
+-			unicam_err(dev, "Subdevice %s wants too many data lanes (%u > %u)\n",
+-				   sensor_node->name,
+-				   ep->bus.mipi_csi2.num_data_lanes,
+-				   peripheral_data_lanes);
+-			goto cleanup_exit;
+-		}
+-		for (lane = 0;
+-		     lane < ep->bus.mipi_csi2.num_data_lanes;
+-		     lane++) {
+-			if (ep->bus.mipi_csi2.data_lanes[lane] != lane + 1) {
+-				unicam_err(dev, "Subdevice %s - incompatible data lane config\n",
+-					   sensor_node->name);
+-				goto cleanup_exit;
+-			}
+-		}
+-		dev->max_data_lanes = ep->bus.mipi_csi2.num_data_lanes;
+-		dev->bus_flags = ep->bus.mipi_csi2.flags;
+-		break;
+-	case V4L2_MBUS_CCP2:
+-		if (ep->bus.mipi_csi1.clock_lane != 0 ||
+-		    ep->bus.mipi_csi1.data_lane != 1) {
+-			unicam_err(dev, "Subdevice %s incompatible lane config\n",
+-				   sensor_node->name);
+-			goto cleanup_exit;
+-		}
+-		dev->max_data_lanes = 1;
+-		dev->bus_flags = ep->bus.mipi_csi1.strobe;
+-		break;
+-	default:
+-		/* Unsupported bus type */
+-		unicam_err(dev, "sub-device %s is not a CSI2 or CCP2 device %d\n",
+-			   sensor_node->name, ep->bus_type);
+-		goto cleanup_exit;
+-	}
+-
+-	/* Store bus type - CSI2 or CCP2 */
+-	dev->bus_type = ep->bus_type;
+-	unicam_dbg(3, dev, "bus_type is %d\n", dev->bus_type);
+-
+-	/* Store Virtual Channel number */
+-	dev->virtual_channel = ep->base.id;
+-
+-	unicam_dbg(3, dev, "v4l2-endpoint: %s\n",
+-		   dev->bus_type == V4L2_MBUS_CSI2_DPHY ? "CSI2" : "CCP2");
+-	unicam_dbg(3, dev, "Virtual Channel=%d\n", dev->virtual_channel);
+-	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY)
+-		unicam_dbg(3, dev, "flags=0x%08x\n", ep->bus.mipi_csi2.flags);
+-	unicam_dbg(3, dev, "num_data_lanes=%d\n", dev->max_data_lanes);
+-
+-	unicam_dbg(1, dev, "found sub-device %s\n", sensor_node->name);
+-
+-	v4l2_async_notifier_init(&dev->notifier);
+-
+-	ret = v4l2_async_notifier_add_subdev(&dev->notifier, asd);
+-	if (ret) {
+-		unicam_err(dev, "Error adding subdevice - ret %d\n", ret);
+-		goto cleanup_exit;
+-	}
+-
+-	dev->notifier.ops = &unicam_async_ops;
+-	ret = v4l2_async_notifier_register(&dev->v4l2_dev,
+-					   &dev->notifier);
+-	if (ret) {
+-		unicam_err(dev, "Error registering async notifier - ret %d\n",
+-			   ret);
+-		ret = -EINVAL;
+-	}
+-
+-cleanup_exit:
+-	if (remote_ep)
+-		of_node_put(remote_ep);
+-	if (sensor_node)
+-		of_node_put(sensor_node);
+-	if (ep_node)
+-		of_node_put(ep_node);
+-
+-	return ret;
+-}
+-
+-static int unicam_probe(struct platform_device *pdev)
+-{
+-	struct unicam_cfg *unicam_cfg;
+-	struct unicam_device *unicam;
+-	struct v4l2_ctrl_handler *hdl;
+-	struct resource	*res;
+-	int ret;
+-
+-	unicam = devm_kzalloc(&pdev->dev, sizeof(*unicam), GFP_KERNEL);
+-	if (!unicam)
+-		return -ENOMEM;
+-
+-	unicam->pdev = pdev;
+-	unicam_cfg = &unicam->cfg;
+-
+-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+-	unicam_cfg->base = devm_ioremap_resource(&pdev->dev, res);
+-	if (IS_ERR(unicam_cfg->base)) {
+-		unicam_err(unicam, "Failed to get main io block\n");
+-		return PTR_ERR(unicam_cfg->base);
+-	}
+-
+-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+-	unicam_cfg->clk_gate_base = devm_ioremap_resource(&pdev->dev, res);
+-	if (IS_ERR(unicam_cfg->clk_gate_base)) {
+-		unicam_err(unicam, "Failed to get 2nd io block\n");
+-		return PTR_ERR(unicam_cfg->clk_gate_base);
+-	}
+-
+-	unicam->clock = devm_clk_get(&pdev->dev, "lp");
+-	if (IS_ERR(unicam->clock)) {
+-		unicam_err(unicam, "Failed to get clock\n");
+-		return PTR_ERR(unicam->clock);
+-	}
+-
+-	ret = platform_get_irq(pdev, 0);
+-	if (ret <= 0) {
+-		dev_err(&pdev->dev, "No IRQ resource\n");
+-		return -ENODEV;
+-	}
+-
+-	ret = devm_request_irq(&pdev->dev, ret, unicam_isr, 0,
+-			       "unicam_capture0", unicam);
+-	if (ret) {
+-		dev_err(&pdev->dev, "Unable to request interrupt\n");
+-		return -EINVAL;
+-	}
+-
+-	unicam->mdev.dev = &pdev->dev;
+-	strscpy(unicam->mdev.model, UNICAM_MODULE_NAME,
+-		sizeof(unicam->mdev.model));
+-	strscpy(unicam->mdev.serial, "", sizeof(unicam->mdev.serial));
+-	snprintf(unicam->mdev.bus_info, sizeof(unicam->mdev.bus_info),
+-		 "platform:%s %s",
+-		 pdev->dev.driver->name, dev_name(&pdev->dev));
+-	unicam->mdev.hw_revision = 1;
+-
+-	media_entity_pads_init(&unicam->node[IMAGE_PAD].video_dev.entity, 1,
+-			       &unicam->node[IMAGE_PAD].pad);
+-	media_entity_pads_init(&unicam->node[METADATA_PAD].video_dev.entity, 1,
+-			       &unicam->node[METADATA_PAD].pad);
+-	media_device_init(&unicam->mdev);
+-
+-	unicam->v4l2_dev.mdev = &unicam->mdev;
+-
+-	ret = v4l2_device_register(&pdev->dev, &unicam->v4l2_dev);
+-	if (ret) {
+-		unicam_err(unicam,
+-			   "Unable to register v4l2 device.\n");
+-		goto media_cleanup;
+-	}
+-
+-	ret = media_device_register(&unicam->mdev);
+-	if (ret < 0) {
+-		unicam_err(unicam,
+-			   "Unable to register media-controller device.\n");
+-		goto probe_out_v4l2_unregister;
+-	}
+-
+-	/* Reserve space for the controls */
+-	hdl = &unicam->node[IMAGE_PAD].ctrl_handler;
+-	ret = v4l2_ctrl_handler_init(hdl, 16);
+-	if (ret < 0)
+-		goto media_unregister;
+-
+-	/* set the driver data in platform device */
+-	platform_set_drvdata(pdev, unicam);
+-
+-	ret = of_unicam_connect_subdevs(unicam);
+-	if (ret) {
+-		dev_err(&pdev->dev, "Failed to connect subdevs\n");
+-		goto free_hdl;
+-	}
+-
+-	/* Enable the block power domain */
+-	pm_runtime_enable(&pdev->dev);
+-
+-	return 0;
+-
+-free_hdl:
+-	v4l2_ctrl_handler_free(hdl);
+-media_unregister:
+-	media_device_unregister(&unicam->mdev);
+-probe_out_v4l2_unregister:
+-	v4l2_device_unregister(&unicam->v4l2_dev);
+-media_cleanup:
+-	media_device_cleanup(&unicam->mdev);
+-
+-	return ret;
+-}
+-
+-static int unicam_remove(struct platform_device *pdev)
+-{
+-	struct unicam_device *unicam = platform_get_drvdata(pdev);
+-
+-	unicam_dbg(2, unicam, "%s\n", __func__);
+-
+-	pm_runtime_disable(&pdev->dev);
+-
+-	v4l2_async_notifier_unregister(&unicam->notifier);
+-	v4l2_ctrl_handler_free(&unicam->node[IMAGE_PAD].ctrl_handler);
+-	v4l2_device_unregister(&unicam->v4l2_dev);
+-	unregister_nodes(unicam);
+-	if (unicam->sensor_config)
+-		v4l2_subdev_free_pad_config(unicam->sensor_config);
+-	media_device_unregister(&unicam->mdev);
+-	media_device_cleanup(&unicam->mdev);
+-
+-	return 0;
+-}
+-
+-static const struct of_device_id unicam_of_match[] = {
+-	{ .compatible = "brcm,bcm2835-unicam", },
+-	{ /* sentinel */ },
+-};
+-MODULE_DEVICE_TABLE(of, unicam_of_match);
+-
+-static struct platform_driver unicam_driver = {
+-	.probe		= unicam_probe,
+-	.remove		= unicam_remove,
+-	.driver = {
+-		.name	= UNICAM_MODULE_NAME,
+-		.of_match_table = of_match_ptr(unicam_of_match),
+-	},
+-};
+-
+-module_platform_driver(unicam_driver);
+-
+-MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
+-MODULE_DESCRIPTION("BCM2835 Unicam driver");
+-MODULE_LICENSE("GPL");
+-MODULE_VERSION(UNICAM_VERSION);
+--- a/drivers/media/platform/bcm2835/vc4-regs-unicam.h
++++ /dev/null
+@@ -1,253 +0,0 @@
+-/* SPDX-License-Identifier: GPL-2.0-only */
+-
+-/*
+- * Copyright (C) 2017-2020 Raspberry Pi Trading.
+- * Dave Stevenson <dave.stevenson@raspberrypi.com>
+- */
+-
+-#ifndef VC4_REGS_UNICAM_H
+-#define VC4_REGS_UNICAM_H
+-
+-/*
+- * The following values are taken from files found within the code drop
+- * made by Broadcom for the BCM21553 Graphics Driver, predominantly in
+- * brcm_usrlib/dag/vmcsx/vcinclude/hardware_vc4.h.
+- * They have been modified to be only the register offset.
+- */
+-#define UNICAM_CTRL	0x000
+-#define UNICAM_STA	0x004
+-#define UNICAM_ANA	0x008
+-#define UNICAM_PRI	0x00c
+-#define UNICAM_CLK	0x010
+-#define UNICAM_CLT	0x014
+-#define UNICAM_DAT0	0x018
+-#define UNICAM_DAT1	0x01c
+-#define UNICAM_DAT2	0x020
+-#define UNICAM_DAT3	0x024
+-#define UNICAM_DLT	0x028
+-#define UNICAM_CMP0	0x02c
+-#define UNICAM_CMP1	0x030
+-#define UNICAM_CAP0	0x034
+-#define UNICAM_CAP1	0x038
+-#define UNICAM_ICTL	0x100
+-#define UNICAM_ISTA	0x104
+-#define UNICAM_IDI0	0x108
+-#define UNICAM_IPIPE	0x10c
+-#define UNICAM_IBSA0	0x110
+-#define UNICAM_IBEA0	0x114
+-#define UNICAM_IBLS	0x118
+-#define UNICAM_IBWP	0x11c
+-#define UNICAM_IHWIN	0x120
+-#define UNICAM_IHSTA	0x124
+-#define UNICAM_IVWIN	0x128
+-#define UNICAM_IVSTA	0x12c
+-#define UNICAM_ICC	0x130
+-#define UNICAM_ICS	0x134
+-#define UNICAM_IDC	0x138
+-#define UNICAM_IDPO	0x13c
+-#define UNICAM_IDCA	0x140
+-#define UNICAM_IDCD	0x144
+-#define UNICAM_IDS	0x148
+-#define UNICAM_DCS	0x200
+-#define UNICAM_DBSA0	0x204
+-#define UNICAM_DBEA0	0x208
+-#define UNICAM_DBWP	0x20c
+-#define UNICAM_DBCTL	0x300
+-#define UNICAM_IBSA1	0x304
+-#define UNICAM_IBEA1	0x308
+-#define UNICAM_IDI1	0x30c
+-#define UNICAM_DBSA1	0x310
+-#define UNICAM_DBEA1	0x314
+-#define UNICAM_MISC	0x400
+-
+-/*
+- * The following bitmasks are from the kernel released by Broadcom
+- * for Android - https://android.googlesource.com/kernel/bcm/
+- * The Rhea, Hawaii, and Java chips all contain the same VideoCore4
+- * Unicam block as BCM2835, as defined in eg
+- * arch/arm/mach-rhea/include/mach/rdb_A0/brcm_rdb_cam.h and similar.
+- * Values reworked to use the kernel BIT and GENMASK macros.
+- *
+- * Some of the bit mnenomics have been amended to match the datasheet.
+- */
+-/* UNICAM_CTRL Register */
+-#define UNICAM_CPE		BIT(0)
+-#define UNICAM_MEM		BIT(1)
+-#define UNICAM_CPR		BIT(2)
+-#define UNICAM_CPM_MASK		GENMASK(3, 3)
+-#define UNICAM_CPM_CSI2		0
+-#define UNICAM_CPM_CCP2		1
+-#define UNICAM_SOE		BIT(4)
+-#define UNICAM_DCM_MASK		GENMASK(5, 5)
+-#define UNICAM_DCM_STROBE	0
+-#define UNICAM_DCM_DATA		1
+-#define UNICAM_SLS		BIT(6)
+-#define UNICAM_PFT_MASK		GENMASK(11, 8)
+-#define UNICAM_OET_MASK		GENMASK(20, 12)
+-
+-/* UNICAM_STA Register */
+-#define UNICAM_SYN		BIT(0)
+-#define UNICAM_CS		BIT(1)
+-#define UNICAM_SBE		BIT(2)
+-#define UNICAM_PBE		BIT(3)
+-#define UNICAM_HOE		BIT(4)
+-#define UNICAM_PLE		BIT(5)
+-#define UNICAM_SSC		BIT(6)
+-#define UNICAM_CRCE		BIT(7)
+-#define UNICAM_OES		BIT(8)
+-#define UNICAM_IFO		BIT(9)
+-#define UNICAM_OFO		BIT(10)
+-#define UNICAM_BFO		BIT(11)
+-#define UNICAM_DL		BIT(12)
+-#define UNICAM_PS		BIT(13)
+-#define UNICAM_IS		BIT(14)
+-#define UNICAM_PI0		BIT(15)
+-#define UNICAM_PI1		BIT(16)
+-#define UNICAM_FSI_S		BIT(17)
+-#define UNICAM_FEI_S		BIT(18)
+-#define UNICAM_LCI_S		BIT(19)
+-#define UNICAM_BUF0_RDY		BIT(20)
+-#define UNICAM_BUF0_NO		BIT(21)
+-#define UNICAM_BUF1_RDY		BIT(22)
+-#define UNICAM_BUF1_NO		BIT(23)
+-#define UNICAM_DI		BIT(24)
+-
+-#define UNICAM_STA_MASK_ALL \
+-		(UNICAM_DL + \
+-		UNICAM_SBE + \
+-		UNICAM_PBE + \
+-		UNICAM_HOE + \
+-		UNICAM_PLE + \
+-		UNICAM_SSC + \
+-		UNICAM_CRCE + \
+-		UNICAM_IFO + \
+-		UNICAM_OFO + \
+-		UNICAM_PS + \
+-		UNICAM_PI0 + \
+-		UNICAM_PI1)
+-
+-/* UNICAM_ANA Register */
+-#define UNICAM_APD		BIT(0)
+-#define UNICAM_BPD		BIT(1)
+-#define UNICAM_AR		BIT(2)
+-#define UNICAM_DDL		BIT(3)
+-#define UNICAM_CTATADJ_MASK	GENMASK(7, 4)
+-#define UNICAM_PTATADJ_MASK	GENMASK(11, 8)
+-
+-/* UNICAM_PRI Register */
+-#define UNICAM_PE		BIT(0)
+-#define UNICAM_PT_MASK		GENMASK(2, 1)
+-#define UNICAM_NP_MASK		GENMASK(7, 4)
+-#define UNICAM_PP_MASK		GENMASK(11, 8)
+-#define UNICAM_BS_MASK		GENMASK(15, 12)
+-#define UNICAM_BL_MASK		GENMASK(17, 16)
+-
+-/* UNICAM_CLK Register */
+-#define UNICAM_CLE		BIT(0)
+-#define UNICAM_CLPD		BIT(1)
+-#define UNICAM_CLLPE		BIT(2)
+-#define UNICAM_CLHSE		BIT(3)
+-#define UNICAM_CLTRE		BIT(4)
+-#define UNICAM_CLAC_MASK	GENMASK(8, 5)
+-#define UNICAM_CLSTE		BIT(29)
+-
+-/* UNICAM_CLT Register */
+-#define UNICAM_CLT1_MASK	GENMASK(7, 0)
+-#define UNICAM_CLT2_MASK	GENMASK(15, 8)
+-
+-/* UNICAM_DATn Registers */
+-#define UNICAM_DLE		BIT(0)
+-#define UNICAM_DLPD		BIT(1)
+-#define UNICAM_DLLPE		BIT(2)
+-#define UNICAM_DLHSE		BIT(3)
+-#define UNICAM_DLTRE		BIT(4)
+-#define UNICAM_DLSM		BIT(5)
+-#define UNICAM_DLFO		BIT(28)
+-#define UNICAM_DLSTE		BIT(29)
+-
+-#define UNICAM_DAT_MASK_ALL (UNICAM_DLSTE + UNICAM_DLFO)
+-
+-/* UNICAM_DLT Register */
+-#define UNICAM_DLT1_MASK	GENMASK(7, 0)
+-#define UNICAM_DLT2_MASK	GENMASK(15, 8)
+-#define UNICAM_DLT3_MASK	GENMASK(23, 16)
+-
+-/* UNICAM_ICTL Register */
+-#define UNICAM_FSIE		BIT(0)
+-#define UNICAM_FEIE		BIT(1)
+-#define UNICAM_IBOB		BIT(2)
+-#define UNICAM_FCM		BIT(3)
+-#define UNICAM_TFC		BIT(4)
+-#define UNICAM_LIP_MASK		GENMASK(6, 5)
+-#define UNICAM_LCIE_MASK	GENMASK(28, 16)
+-
+-/* UNICAM_IDI0/1 Register */
+-#define UNICAM_ID0_MASK		GENMASK(7, 0)
+-#define UNICAM_ID1_MASK		GENMASK(15, 8)
+-#define UNICAM_ID2_MASK		GENMASK(23, 16)
+-#define UNICAM_ID3_MASK		GENMASK(31, 24)
+-
+-/* UNICAM_ISTA Register */
+-#define UNICAM_FSI		BIT(0)
+-#define UNICAM_FEI		BIT(1)
+-#define UNICAM_LCI		BIT(2)
+-
+-#define UNICAM_ISTA_MASK_ALL (UNICAM_FSI + UNICAM_FEI + UNICAM_LCI)
+-
+-/* UNICAM_IPIPE Register */
+-#define UNICAM_PUM_MASK		GENMASK(2, 0)
+-		/* Unpacking modes */
+-		#define UNICAM_PUM_NONE		0
+-		#define UNICAM_PUM_UNPACK6	1
+-		#define UNICAM_PUM_UNPACK7	2
+-		#define UNICAM_PUM_UNPACK8	3
+-		#define UNICAM_PUM_UNPACK10	4
+-		#define UNICAM_PUM_UNPACK12	5
+-		#define UNICAM_PUM_UNPACK14	6
+-		#define UNICAM_PUM_UNPACK16	7
+-#define UNICAM_DDM_MASK		GENMASK(6, 3)
+-#define UNICAM_PPM_MASK		GENMASK(9, 7)
+-		/* Packing modes */
+-		#define UNICAM_PPM_NONE		0
+-		#define UNICAM_PPM_PACK8	1
+-		#define UNICAM_PPM_PACK10	2
+-		#define UNICAM_PPM_PACK12	3
+-		#define UNICAM_PPM_PACK14	4
+-		#define UNICAM_PPM_PACK16	5
+-#define UNICAM_DEM_MASK		GENMASK(11, 10)
+-#define UNICAM_DEBL_MASK	GENMASK(14, 12)
+-#define UNICAM_ICM_MASK		GENMASK(16, 15)
+-#define UNICAM_IDM_MASK		GENMASK(17, 17)
+-
+-/* UNICAM_ICC Register */
+-#define UNICAM_ICFL_MASK	GENMASK(4, 0)
+-#define UNICAM_ICFH_MASK	GENMASK(9, 5)
+-#define UNICAM_ICST_MASK	GENMASK(12, 10)
+-#define UNICAM_ICLT_MASK	GENMASK(15, 13)
+-#define UNICAM_ICLL_MASK	GENMASK(31, 16)
+-
+-/* UNICAM_DCS Register */
+-#define UNICAM_DIE		BIT(0)
+-#define UNICAM_DIM		BIT(1)
+-#define UNICAM_DBOB		BIT(3)
+-#define UNICAM_FDE		BIT(4)
+-#define UNICAM_LDP		BIT(5)
+-#define UNICAM_EDL_MASK		GENMASK(15, 8)
+-
+-/* UNICAM_DBCTL Register */
+-#define UNICAM_DBEN		BIT(0)
+-#define UNICAM_BUF0_IE		BIT(1)
+-#define UNICAM_BUF1_IE		BIT(2)
+-
+-/* UNICAM_CMP[0,1] register */
+-#define UNICAM_PCE		BIT(31)
+-#define UNICAM_GI		BIT(9)
+-#define UNICAM_CPH		BIT(8)
+-#define UNICAM_PCVC_MASK	GENMASK(7, 6)
+-#define UNICAM_PCDT_MASK	GENMASK(5, 0)
+-
+-/* UNICAM_MISC register */
+-#define UNICAM_FL0		BIT(6)
+-#define UNICAM_FL1		BIT(9)
+-
+-#endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0246-media-bcm2835-unicam-Driver-for-CCP2-CSI2-camera-int.patch b/target/linux/bcm27xx/patches-5.15/950-0246-media-bcm2835-unicam-Driver-for-CCP2-CSI2-camera-int.patch
new file mode 100644
index 0000000000..694e2e4b86
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0246-media-bcm2835-unicam-Driver-for-CCP2-CSI2-camera-int.patch
@@ -0,0 +1,3150 @@
+From 2c9481be040b039d2432ac92f9626d3fb48aa86d Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Mon, 4 May 2020 12:25:41 +0300
+Subject: [PATCH] media: bcm2835-unicam: Driver for CCP2/CSI2 camera
+ interface
+
+Add a driver for the Unicam camera receiver block on BCM283x processors.
+Compared to the bcm2835-camera driver present in staging, this driver
+handles the Unicam block only (CSI-2 receiver), and doesn't depend on
+the VC4 firmware running on the VPU.
+
+The commit is made up of a series of changes cherry-picked from the
+rpi-5.4.y branch of https://github.com/raspberrypi/linux/ with
+additional enhancements, forward-ported to the mainline kernel.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Reported-by: kbuild test robot <lkp@intel.com>
+---
+ MAINTAINERS                                   |    2 +-
+ drivers/media/platform/bcm2835/Kconfig        |   15 +
+ drivers/media/platform/bcm2835/Makefile       |    3 +
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 2825 +++++++++++++++++
+ .../media/platform/bcm2835/vc4-regs-unicam.h  |  253 ++
+ 5 files changed, 3097 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/media/platform/bcm2835/Kconfig
+ create mode 100644 drivers/media/platform/bcm2835/Makefile
+ create mode 100644 drivers/media/platform/bcm2835/bcm2835-unicam.c
+ create mode 100644 drivers/media/platform/bcm2835/vc4-regs-unicam.h
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3564,7 +3564,7 @@ M:	Raspberry Pi Kernel Maintenance <kern
+ L:	linux-media@vger.kernel.org
+ S:	Maintained
+ F:	drivers/media/platform/bcm2835/
+-F:	Documentation/devicetree/bindings/media/bcm2835-unicam.txt
++F:	Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
+ 
+ BROADCOM BCM47XX MIPS ARCHITECTURE
+ M:	Hauke Mehrtens <hauke@hauke-m.de>
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/Kconfig
+@@ -0,0 +1,15 @@
++# Broadcom VideoCore4 V4L2 camera support
++
++config VIDEO_BCM2835_UNICAM
++	tristate "Broadcom BCM2835 Unicam video capture driver"
++	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && MEDIA_CONTROLLER
++	depends on ARCH_BCM2835 || COMPILE_TEST
++	select VIDEOBUF2_DMA_CONTIG
++	select V4L2_FWNODE
++	help
++	  Say Y here to enable support for the BCM2835 CSI-2 receiver. This is a
++	  V4L2 driver that controls the CSI-2 receiver directly, independently
++	  from the VC4 firmware.
++
++	  To compile this driver as a module, choose M here. The module will be
++	  called bcm2835-unicam.
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/Makefile
+@@ -0,0 +1,3 @@
++# Makefile for BCM2835 Unicam driver
++
++obj-$(CONFIG_VIDEO_BCM2835_UNICAM) += bcm2835-unicam.o
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -0,0 +1,2825 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * BCM2835 Unicam Capture Driver
++ *
++ * Copyright (C) 2017-2020 - Raspberry Pi (Trading) Ltd.
++ *
++ * Dave Stevenson <dave.stevenson@raspberrypi.com>
++ *
++ * Based on TI am437x driver by
++ *   Benoit Parrot <bparrot@ti.com>
++ *   Lad, Prabhakar <prabhakar.csengg@gmail.com>
++ *
++ * and TI CAL camera interface driver by
++ *    Benoit Parrot <bparrot@ti.com>
++ *
++ *
++ * There are two camera drivers in the kernel for BCM283x - this one
++ * and bcm2835-camera (currently in staging).
++ *
++ * This driver directly controls the Unicam peripheral - there is no
++ * involvement with the VideoCore firmware. Unicam receives CSI-2 or
++ * CCP2 data and writes it into SDRAM.
++ * The only potential processing options are to repack Bayer data into an
++ * alternate format, and applying windowing.
++ * The repacking does not shift the data, so can repack V4L2_PIX_FMT_Sxxxx10P
++ * to V4L2_PIX_FMT_Sxxxx10, or V4L2_PIX_FMT_Sxxxx12P to V4L2_PIX_FMT_Sxxxx12,
++ * but not generically up to V4L2_PIX_FMT_Sxxxx16. The driver will add both
++ * formats where the relevant formats are defined, and will automatically
++ * configure the repacking as required.
++ * Support for windowing may be added later.
++ *
++ * It should be possible to connect this driver to any sensor with a
++ * suitable output interface and V4L2 subdevice driver.
++ *
++ * bcm2835-camera uses the VideoCore firmware to control the sensor,
++ * Unicam, ISP, and all tuner control loops. Fully processed frames are
++ * delivered to the driver by the firmware. It only has sensor drivers
++ * for Omnivision OV5647, and Sony IMX219 sensors.
++ *
++ * The two drivers are mutually exclusive for the same Unicam instance.
++ * The VideoCore firmware checks the device tree configuration during boot.
++ * If it finds device tree nodes called csi0 or csi1 it will block the
++ * firmware from accessing the peripheral, and bcm2835-camera will
++ * not be able to stream data.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/device.h>
++#include <linux/dma-mapping.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of_device.h>
++#include <linux/of_graph.h>
++#include <linux/pinctrl/consumer.h>
++#include <linux/platform_device.h>
++#include <linux/pm_runtime.h>
++#include <linux/slab.h>
++#include <linux/uaccess.h>
++#include <linux/videodev2.h>
++
++#include <media/v4l2-common.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-dev.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-dv-timings.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-ioctl.h>
++#include <media/v4l2-fwnode.h>
++#include <media/videobuf2-dma-contig.h>
++
++#include "vc4-regs-unicam.h"
++
++#define UNICAM_MODULE_NAME	"unicam"
++#define UNICAM_VERSION		"0.1.0"
++
++static int debug;
++module_param(debug, int, 0644);
++MODULE_PARM_DESC(debug, "Debug level 0-3");
++
++#define unicam_dbg(level, dev, fmt, arg...)	\
++		v4l2_dbg(level, debug, &(dev)->v4l2_dev, fmt, ##arg)
++#define unicam_info(dev, fmt, arg...)	\
++		v4l2_info(&(dev)->v4l2_dev, fmt, ##arg)
++#define unicam_err(dev, fmt, arg...)	\
++		v4l2_err(&(dev)->v4l2_dev, fmt, ##arg)
++
++/*
++ * To protect against a dodgy sensor driver never returning an error from
++ * enum_mbus_code, set a maximum index value to be used.
++ */
++#define MAX_ENUM_MBUS_CODE	128
++
++/*
++ * Stride is a 16 bit register, but also has to be a multiple of 32.
++ */
++#define BPL_ALIGNMENT		32
++#define MAX_BYTESPERLINE	((1 << 16) - BPL_ALIGNMENT)
++/*
++ * Max width is therefore determined by the max stride divided by
++ * the number of bits per pixel. Take 32bpp as a
++ * worst case.
++ * No imposed limit on the height, so adopt a square image for want
++ * of anything better.
++ */
++#define MAX_WIDTH		(MAX_BYTESPERLINE / 4)
++#define MAX_HEIGHT		MAX_WIDTH
++/* Define a nominal minimum image size */
++#define MIN_WIDTH		16
++#define MIN_HEIGHT		16
++/* Default size of the embedded buffer */
++#define UNICAM_EMBEDDED_SIZE	8192
++
++/*
++ * Size of the dummy buffer. Can be any size really, but the DMA
++ * allocation works in units of page sizes.
++ */
++#define DUMMY_BUF_SIZE		(PAGE_SIZE)
++
++enum pad_types {
++	IMAGE_PAD,
++	METADATA_PAD,
++	MAX_NODES
++};
++
++/*
++ * struct unicam_fmt - Unicam media bus format information
++ * @pixelformat: V4L2 pixel format FCC identifier. 0 if n/a.
++ * @repacked_fourcc: V4L2 pixel format FCC identifier if the data is expanded
++ * out to 16bpp. 0 if n/a.
++ * @code: V4L2 media bus format code.
++ * @depth: Bits per pixel as delivered from the source.
++ * @csi_dt: CSI data type.
++ * @check_variants: Flag to denote that there are multiple mediabus formats
++ *		still in the list that could match this V4L2 format.
++ */
++struct unicam_fmt {
++	u32	fourcc;
++	u32	repacked_fourcc;
++	u32	code;
++	u8	depth;
++	u8	csi_dt;
++	u8	check_variants;
++};
++
++static const struct unicam_fmt formats[] = {
++	/* YUV Formats */
++	{
++		.fourcc		= V4L2_PIX_FMT_YUYV,
++		.code		= MEDIA_BUS_FMT_YUYV8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_UYVY,
++		.code		= MEDIA_BUS_FMT_UYVY8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_YVYU,
++		.code		= MEDIA_BUS_FMT_YVYU8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_VYUY,
++		.code		= MEDIA_BUS_FMT_VYUY8_2X8,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++		.check_variants = 1,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_YUYV,
++		.code		= MEDIA_BUS_FMT_YUYV8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_UYVY,
++		.code		= MEDIA_BUS_FMT_UYVY8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_YVYU,
++		.code		= MEDIA_BUS_FMT_YVYU8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_VYUY,
++		.code		= MEDIA_BUS_FMT_VYUY8_1X16,
++		.depth		= 16,
++		.csi_dt		= 0x1e,
++	}, {
++	/* RGB Formats */
++		.fourcc		= V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
++		.code		= MEDIA_BUS_FMT_RGB565_2X8_LE,
++		.depth		= 16,
++		.csi_dt		= 0x22,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
++		.code		= MEDIA_BUS_FMT_RGB565_2X8_BE,
++		.depth		= 16,
++		.csi_dt		= 0x22
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
++		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
++		.depth		= 16,
++		.csi_dt		= 0x21,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
++		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
++		.depth		= 16,
++		.csi_dt		= 0x21,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB24, /* rgb */
++		.code		= MEDIA_BUS_FMT_RGB888_1X24,
++		.depth		= 24,
++		.csi_dt		= 0x24,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_BGR24, /* bgr */
++		.code		= MEDIA_BUS_FMT_BGR888_1X24,
++		.depth		= 24,
++		.csi_dt		= 0x24,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_RGB32, /* argb */
++		.code		= MEDIA_BUS_FMT_ARGB8888_1X32,
++		.depth		= 32,
++		.csi_dt		= 0x0,
++	}, {
++	/* Bayer Formats */
++		.fourcc		= V4L2_PIX_FMT_SBGGR8,
++		.code		= MEDIA_BUS_FMT_SBGGR8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG8,
++		.code		= MEDIA_BUS_FMT_SGBRG8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG8,
++		.code		= MEDIA_BUS_FMT_SGRBG8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB8,
++		.code		= MEDIA_BUS_FMT_SRGGB8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SBGGR10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SBGGR10,
++		.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGBRG10,
++		.code		= MEDIA_BUS_FMT_SGBRG10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGRBG10,
++		.code		= MEDIA_BUS_FMT_SGRBG10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB10P,
++		.repacked_fourcc = V4L2_PIX_FMT_SRGGB10,
++		.code		= MEDIA_BUS_FMT_SRGGB10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SBGGR12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SBGGR12,
++		.code		= MEDIA_BUS_FMT_SBGGR12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGBRG12,
++		.code		= MEDIA_BUS_FMT_SGBRG12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGRBG12,
++		.code		= MEDIA_BUS_FMT_SGRBG12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB12P,
++		.repacked_fourcc = V4L2_PIX_FMT_SRGGB12,
++		.code		= MEDIA_BUS_FMT_SRGGB12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SBGGR14P,
++		.code		= MEDIA_BUS_FMT_SBGGR14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGBRG14P,
++		.code		= MEDIA_BUS_FMT_SGBRG14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SGRBG14P,
++		.code		= MEDIA_BUS_FMT_SGRBG14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_SRGGB14P,
++		.code		= MEDIA_BUS_FMT_SRGGB14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
++	}, {
++	/*
++	 * 16 bit Bayer formats could be supported, but there is no CSI2
++	 * data_type defined for raw 16, and no sensors that produce it at
++	 * present.
++	 */
++
++	/* Greyscale formats */
++		.fourcc		= V4L2_PIX_FMT_GREY,
++		.code		= MEDIA_BUS_FMT_Y8_1X8,
++		.depth		= 8,
++		.csi_dt		= 0x2a,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_Y10P,
++		.repacked_fourcc = V4L2_PIX_FMT_Y10,
++		.code		= MEDIA_BUS_FMT_Y10_1X10,
++		.depth		= 10,
++		.csi_dt		= 0x2b,
++	}, {
++		/* NB There is no packed V4L2 fourcc for this format. */
++		.repacked_fourcc = V4L2_PIX_FMT_Y12,
++		.code		= MEDIA_BUS_FMT_Y12_1X12,
++		.depth		= 12,
++		.csi_dt		= 0x2c,
++	},
++	/* Embedded data format */
++	{
++		.fourcc		= V4L2_META_FMT_SENSOR_DATA,
++		.code		= MEDIA_BUS_FMT_SENSOR_DATA,
++		.depth		= 8,
++	}
++};
++
++struct unicam_buffer {
++	struct vb2_v4l2_buffer vb;
++	struct list_head list;
++};
++
++static inline struct unicam_buffer *to_unicam_buffer(struct vb2_buffer *vb)
++{
++	return container_of(vb, struct unicam_buffer, vb.vb2_buf);
++}
++
++struct unicam_node {
++	bool registered;
++	int open;
++	bool streaming;
++	unsigned int pad_id;
++	/* Pointer pointing to current v4l2_buffer */
++	struct unicam_buffer *cur_frm;
++	/* Pointer pointing to next v4l2_buffer */
++	struct unicam_buffer *next_frm;
++	/* video capture */
++	const struct unicam_fmt *fmt;
++	/* Used to store current pixel format */
++	struct v4l2_format v_fmt;
++	/* Used to store current mbus frame format */
++	struct v4l2_mbus_framefmt m_fmt;
++	/* Buffer queue used in video-buf */
++	struct vb2_queue buffer_queue;
++	/* Queue of filled frames */
++	struct list_head dma_queue;
++	/* IRQ lock for DMA queue */
++	spinlock_t dma_queue_lock;
++	/* lock used to access this structure */
++	struct mutex lock;
++	/* Identifies video device for this channel */
++	struct video_device video_dev;
++	/* Pointer to the parent handle */
++	struct unicam_device *dev;
++	struct media_pad pad;
++	unsigned int embedded_lines;
++	/*
++	 * Dummy buffer intended to be used by unicam
++	 * if we have no other queued buffers to swap to.
++	 */
++	void *dummy_buf_cpu_addr;
++	dma_addr_t dummy_buf_dma_addr;
++};
++
++struct unicam_device {
++	struct kref kref;
++
++	/* V4l2 specific parameters */
++	struct v4l2_async_subdev asd;
++
++	/* peripheral base address */
++	void __iomem *base;
++	/* clock gating base address */
++	void __iomem *clk_gate_base;
++	/* clock handle */
++	struct clk *clock;
++	/* V4l2 device */
++	struct v4l2_device v4l2_dev;
++	struct media_device mdev;
++
++	/* parent device */
++	struct platform_device *pdev;
++	/* subdevice async Notifier */
++	struct v4l2_async_notifier notifier;
++	unsigned int sequence;
++
++	/* ptr to  sub device */
++	struct v4l2_subdev *sensor;
++	/* Pad config for the sensor */
++	struct v4l2_subdev_pad_config *sensor_config;
++
++	enum v4l2_mbus_type bus_type;
++	/*
++	 * Stores bus.mipi_csi2.flags for CSI2 sensors, or
++	 * bus.mipi_csi1.strobe for CCP2.
++	 */
++	unsigned int bus_flags;
++	unsigned int max_data_lanes;
++	unsigned int active_data_lanes;
++	bool sensor_embedded_data;
++
++	struct unicam_node node[MAX_NODES];
++	struct v4l2_ctrl_handler ctrl_handler;
++};
++
++static inline struct unicam_device *
++to_unicam_device(struct v4l2_device *v4l2_dev)
++{
++	return container_of(v4l2_dev, struct unicam_device, v4l2_dev);
++}
++
++/* Hardware access */
++static inline void clk_write(struct unicam_device *dev, u32 val)
++{
++	writel(val | 0x5a000000, dev->clk_gate_base);
++}
++
++static inline u32 reg_read(struct unicam_device *dev, u32 offset)
++{
++	return readl(dev->base + offset);
++}
++
++static inline void reg_write(struct unicam_device *dev, u32 offset, u32 val)
++{
++	writel(val, dev->base + offset);
++}
++
++static inline int get_field(u32 value, u32 mask)
++{
++	return (value & mask) >> __ffs(mask);
++}
++
++static inline void set_field(u32 *valp, u32 field, u32 mask)
++{
++	u32 val = *valp;
++
++	val &= ~mask;
++	val |= (field << __ffs(mask)) & mask;
++	*valp = val;
++}
++
++static inline u32 reg_read_field(struct unicam_device *dev, u32 offset,
++				 u32 mask)
++{
++	return get_field(reg_read(dev, offset), mask);
++}
++
++static inline void reg_write_field(struct unicam_device *dev, u32 offset,
++				   u32 field, u32 mask)
++{
++	u32 val = reg_read(dev, offset);
++
++	set_field(&val, field, mask);
++	reg_write(dev, offset, val);
++}
++
++/* Power management functions */
++static inline int unicam_runtime_get(struct unicam_device *dev)
++{
++	return pm_runtime_get_sync(&dev->pdev->dev);
++}
++
++static inline void unicam_runtime_put(struct unicam_device *dev)
++{
++	pm_runtime_put_sync(&dev->pdev->dev);
++}
++
++/* Format setup functions */
++static const struct unicam_fmt *find_format_by_code(u32 code)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(formats); i++) {
++		if (formats[i].code == code)
++			return &formats[i];
++	}
++
++	return NULL;
++}
++
++static int check_mbus_format(struct unicam_device *dev,
++			     const struct unicam_fmt *format)
++{
++	unsigned int i;
++	int ret = 0;
++
++	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
++		struct v4l2_subdev_mbus_code_enum mbus_code = {
++			.index = i,
++			.pad = IMAGE_PAD,
++			.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		};
++
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
++				       NULL, &mbus_code);
++
++		if (!ret && mbus_code.code == format->code)
++			return 1;
++	}
++
++	return 0;
++}
++
++static const struct unicam_fmt *find_format_by_pix(struct unicam_device *dev,
++						   u32 pixelformat)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(formats); i++) {
++		if (formats[i].fourcc == pixelformat ||
++		    formats[i].repacked_fourcc == pixelformat) {
++			if (formats[i].check_variants &&
++			    !check_mbus_format(dev, &formats[i]))
++				continue;
++			return &formats[i];
++		}
++	}
++
++	return NULL;
++}
++
++static inline unsigned int bytes_per_line(u32 width,
++					  const struct unicam_fmt *fmt,
++					  u32 v4l2_fourcc)
++{
++	if (v4l2_fourcc == fmt->repacked_fourcc)
++		/* Repacking always goes to 16bpp */
++		return ALIGN(width << 1, BPL_ALIGNMENT);
++	else
++		return ALIGN((width * fmt->depth) >> 3, BPL_ALIGNMENT);
++}
++
++static int __subdev_get_format(struct unicam_device *dev,
++			       struct v4l2_mbus_framefmt *fmt, int pad_id)
++{
++	struct v4l2_subdev_format sd_fmt = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.pad = pad_id
++	};
++	int ret;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_config,
++			       &sd_fmt);
++	if (ret < 0)
++		return ret;
++
++	*fmt = sd_fmt.format;
++
++	unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
++		   fmt->width, fmt->height, fmt->code);
++
++	return 0;
++}
++
++static int __subdev_set_format(struct unicam_device *dev,
++			       struct v4l2_mbus_framefmt *fmt, int pad_id)
++{
++	struct v4l2_subdev_format sd_fmt = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.pad = pad_id
++	};
++	int ret;
++
++	sd_fmt.format = *fmt;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
++			       &sd_fmt);
++	if (ret < 0)
++		return ret;
++
++	*fmt = sd_fmt.format;
++
++	if (pad_id == IMAGE_PAD)
++		unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__, fmt->width,
++			   fmt->height, fmt->code);
++	else
++		unicam_dbg(1, dev, "%s Embedded data code:%04x\n", __func__,
++			   sd_fmt.format.code);
++
++	return 0;
++}
++
++static int unicam_calc_format_size_bpl(struct unicam_device *dev,
++				       const struct unicam_fmt *fmt,
++				       struct v4l2_format *f)
++{
++	unsigned int min_bytesperline;
++
++	v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 2,
++			      &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 0,
++			      0);
++
++	min_bytesperline = bytes_per_line(f->fmt.pix.width, fmt,
++					  f->fmt.pix.pixelformat);
++
++	if (f->fmt.pix.bytesperline > min_bytesperline &&
++	    f->fmt.pix.bytesperline <= MAX_BYTESPERLINE)
++		f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline,
++						BPL_ALIGNMENT);
++	else
++		f->fmt.pix.bytesperline = min_bytesperline;
++
++	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
++
++	unicam_dbg(3, dev, "%s: fourcc: %08X size: %dx%d bpl:%d img_size:%d\n",
++		   __func__,
++		   f->fmt.pix.pixelformat,
++		   f->fmt.pix.width, f->fmt.pix.height,
++		   f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
++
++	return 0;
++}
++
++static int unicam_reset_format(struct unicam_node *node)
++{
++	struct unicam_device *dev = node->dev;
++	struct v4l2_mbus_framefmt mbus_fmt;
++	int ret;
++
++	if (dev->sensor_embedded_data || node->pad_id != METADATA_PAD) {
++		ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
++		if (ret) {
++			unicam_err(dev, "Failed to get_format - ret %d\n", ret);
++			return ret;
++		}
++
++		if (mbus_fmt.code != node->fmt->code) {
++			unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
++				   node->fmt->code, mbus_fmt.code);
++			return ret;
++		}
++	}
++
++	if (node->pad_id == IMAGE_PAD) {
++		v4l2_fill_pix_format(&node->v_fmt.fmt.pix, &mbus_fmt);
++		node->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++		unicam_calc_format_size_bpl(dev, node->fmt, &node->v_fmt);
++	} else {
++		node->v_fmt.type = V4L2_BUF_TYPE_META_CAPTURE;
++		node->v_fmt.fmt.meta.dataformat = V4L2_META_FMT_SENSOR_DATA;
++		if (dev->sensor_embedded_data) {
++			node->v_fmt.fmt.meta.buffersize =
++					mbus_fmt.width * mbus_fmt.height;
++			node->embedded_lines = mbus_fmt.height;
++		} else {
++			node->v_fmt.fmt.meta.buffersize = UNICAM_EMBEDDED_SIZE;
++			node->embedded_lines = 1;
++		}
++	}
++
++	node->m_fmt = mbus_fmt;
++	return 0;
++}
++
++static void unicam_wr_dma_addr(struct unicam_device *dev, dma_addr_t dmaaddr,
++			       unsigned int buffer_size, int pad_id)
++{
++	dma_addr_t endaddr = dmaaddr + buffer_size;
++
++	/*
++	 * dmaaddr and endaddr should be a 32-bit address with the top two bits
++	 * set to 0x3 to signify uncached access through the Videocore memory
++	 * controller.
++	 */
++	WARN_ON((dmaaddr >> 30) != 0x3 || (endaddr >> 30) != 0x3);
++
++	if (pad_id == IMAGE_PAD) {
++		reg_write(dev, UNICAM_IBSA0, dmaaddr);
++		reg_write(dev, UNICAM_IBEA0, endaddr);
++	} else {
++		reg_write(dev, UNICAM_DBSA0, dmaaddr);
++		reg_write(dev, UNICAM_DBEA0, endaddr);
++	}
++}
++
++static inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
++{
++	dma_addr_t start_addr, cur_addr;
++	unsigned int stride = dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline;
++	struct unicam_buffer *frm = dev->node[IMAGE_PAD].cur_frm;
++
++	if (!frm)
++		return 0;
++
++	start_addr = vb2_dma_contig_plane_dma_addr(&frm->vb.vb2_buf, 0);
++	cur_addr = reg_read(dev, UNICAM_IBWP);
++	return (unsigned int)(cur_addr - start_addr) / stride;
++}
++
++static inline void unicam_schedule_next_buffer(struct unicam_node *node)
++{
++	struct unicam_device *dev = node->dev;
++	struct unicam_buffer *buf;
++	unsigned int size;
++	dma_addr_t addr;
++
++	buf = list_first_entry(&node->dma_queue, struct unicam_buffer, list);
++	node->next_frm = buf;
++	list_del(&buf->list);
++
++	addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
++	size = (node->pad_id == IMAGE_PAD) ?
++			node->v_fmt.fmt.pix.sizeimage :
++			node->v_fmt.fmt.meta.buffersize;
++
++	unicam_wr_dma_addr(dev, addr, size, node->pad_id);
++}
++
++static inline void unicam_schedule_dummy_buffer(struct unicam_node *node)
++{
++	struct unicam_device *dev = node->dev;
++
++	unicam_dbg(3, dev, "Scheduling dummy buffer for node %d\n",
++		   node->pad_id);
++
++	unicam_wr_dma_addr(dev, node->dummy_buf_dma_addr, DUMMY_BUF_SIZE,
++			   node->pad_id);
++	node->next_frm = NULL;
++}
++
++static inline void unicam_process_buffer_complete(struct unicam_node *node,
++						  unsigned int sequence)
++{
++	node->cur_frm->vb.field = node->m_fmt.field;
++	node->cur_frm->vb.sequence = sequence;
++
++	vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
++}
++
++static bool unicam_all_nodes_streaming(struct unicam_device *dev)
++{
++	bool ret;
++
++	ret = dev->node[IMAGE_PAD].open && dev->node[IMAGE_PAD].streaming;
++	ret &= !dev->node[METADATA_PAD].open ||
++	       dev->node[METADATA_PAD].streaming;
++	return ret;
++}
++
++static bool unicam_all_nodes_disabled(struct unicam_device *dev)
++{
++	return !dev->node[IMAGE_PAD].streaming &&
++	       !dev->node[METADATA_PAD].streaming;
++}
++
++static void unicam_queue_event_sof(struct unicam_device *unicam)
++{
++	struct v4l2_event event = {
++		.type = V4L2_EVENT_FRAME_SYNC,
++		.u.frame_sync.frame_sequence = unicam->sequence,
++	};
++
++	v4l2_event_queue(&unicam->node[IMAGE_PAD].video_dev, &event);
++}
++
++/*
++ * unicam_isr : ISR handler for unicam capture
++ * @irq: irq number
++ * @dev_id: dev_id ptr
++ *
++ * It changes status of the captured buffer, takes next buffer from the queue
++ * and sets its address in unicam registers
++ */
++static irqreturn_t unicam_isr(int irq, void *dev)
++{
++	struct unicam_device *unicam = dev;
++	unsigned int lines_done = unicam_get_lines_done(dev);
++	unsigned int sequence = unicam->sequence;
++	unsigned int i;
++	u32 ista, sta;
++	u64 ts;
++
++	/*
++	 * Don't service interrupts if not streaming.
++	 * Avoids issues if the VPU should enable the
++	 * peripheral without the kernel knowing (that
++	 * shouldn't happen, but causes issues if it does).
++	 */
++	if (unicam_all_nodes_disabled(unicam))
++		return IRQ_NONE;
++
++	sta = reg_read(unicam, UNICAM_STA);
++	/* Write value back to clear the interrupts */
++	reg_write(unicam, UNICAM_STA, sta);
++
++	ista = reg_read(unicam, UNICAM_ISTA);
++	/* Write value back to clear the interrupts */
++	reg_write(unicam, UNICAM_ISTA, ista);
++
++	unicam_dbg(3, unicam, "ISR: ISTA: 0x%X, STA: 0x%X, sequence %d, lines done %d",
++		   ista, sta, sequence, lines_done);
++
++	if (!(sta & (UNICAM_IS | UNICAM_PI0)))
++		return IRQ_HANDLED;
++
++	/*
++	 * We must run the frame end handler first. If we have a valid next_frm
++	 * and we get a simultaneout FE + FS interrupt, running the FS handler
++	 * first would null out the next_frm ptr and we would have lost the
++	 * buffer forever.
++	 */
++	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
++		/*
++		 * Ensure we have swapped buffers already as we can't
++		 * stop the peripheral. If no buffer is available, use a
++		 * dummy buffer to dump out frames until we get a new buffer
++		 * to use.
++		 */
++		for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
++			if (!unicam->node[i].streaming)
++				continue;
++
++			if (unicam->node[i].cur_frm)
++				unicam_process_buffer_complete(&unicam->node[i],
++							       sequence);
++			unicam->node[i].cur_frm = unicam->node[i].next_frm;
++		}
++		unicam->sequence++;
++	}
++
++	if (ista & UNICAM_FSI) {
++		/*
++		 * Timestamp is to be when the first data byte was captured,
++		 * aka frame start.
++		 */
++		ts = ktime_get_ns();
++		for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
++			if (!unicam->node[i].streaming)
++				continue;
++
++			if (unicam->node[i].cur_frm)
++				unicam->node[i].cur_frm->vb.vb2_buf.timestamp =
++								ts;
++			/*
++			 * Set the next frame output to go to a dummy frame
++			 * if we have not managed to obtain another frame
++			 * from the queue.
++			 */
++			unicam_schedule_dummy_buffer(&unicam->node[i]);
++		}
++
++		unicam_queue_event_sof(unicam);
++	}
++
++	/*
++	 * Cannot swap buffer at frame end, there may be a race condition
++	 * where the HW does not actually swap it if the new frame has
++	 * already started.
++	 */
++	if (ista & (UNICAM_FSI | UNICAM_LCI) && !(ista & UNICAM_FEI)) {
++		for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
++			if (!unicam->node[i].streaming)
++				continue;
++
++			spin_lock(&unicam->node[i].dma_queue_lock);
++			if (!list_empty(&unicam->node[i].dma_queue) &&
++			    !unicam->node[i].next_frm)
++				unicam_schedule_next_buffer(&unicam->node[i]);
++			spin_unlock(&unicam->node[i].dma_queue_lock);
++		}
++	}
++
++	if (reg_read(unicam, UNICAM_ICTL) & UNICAM_FCM) {
++		/* Switch out of trigger mode if selected */
++		reg_write_field(unicam, UNICAM_ICTL, 1, UNICAM_TFC);
++		reg_write_field(unicam, UNICAM_ICTL, 0, UNICAM_FCM);
++	}
++	return IRQ_HANDLED;
++}
++
++static int unicam_querycap(struct file *file, void *priv,
++			   struct v4l2_capability *cap)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	strlcpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
++	strlcpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
++
++	snprintf(cap->bus_info, sizeof(cap->bus_info),
++		 "platform:%s", dev_name(&dev->pdev->dev));
++
++	cap->capabilities |= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_META_CAPTURE;
++
++	return 0;
++}
++
++static int unicam_enum_fmt_vid_cap(struct file *file, void  *priv,
++				   struct v4l2_fmtdesc *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	unsigned int index = 0;
++	unsigned int i;
++	int ret = 0;
++
++	if (node->pad_id != IMAGE_PAD)
++		return -EINVAL;
++
++	for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
++		struct v4l2_subdev_mbus_code_enum mbus_code = {
++			.index = i,
++			.pad = IMAGE_PAD,
++			.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		};
++		const struct unicam_fmt *fmt;
++
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
++				       NULL, &mbus_code);
++		if (ret < 0) {
++			unicam_dbg(2, dev,
++				   "subdev->enum_mbus_code idx %d returned %d - index invalid\n",
++				   i, ret);
++			return -EINVAL;
++		}
++
++		fmt = find_format_by_code(mbus_code.code);
++		if (fmt) {
++			if (fmt->fourcc) {
++				if (index == f->index) {
++					f->pixelformat = fmt->fourcc;
++					break;
++				}
++				index++;
++			}
++			if (fmt->repacked_fourcc) {
++				if (index == f->index) {
++					f->pixelformat = fmt->repacked_fourcc;
++					break;
++				}
++				index++;
++			}
++		}
++	}
++
++	return 0;
++}
++
++static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct v4l2_mbus_framefmt mbus_fmt = {0};
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt = NULL;
++	int ret;
++
++	if (node->pad_id != IMAGE_PAD)
++		return -EINVAL;
++
++	/*
++	 * If a flip has occurred in the sensor, the fmt code might have
++	 * changed. So we will need to re-fetch the format from the subdevice.
++	 */
++	ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
++	if (ret)
++		return -EINVAL;
++
++	/* Find the V4L2 format from mbus code. We must match a known format. */
++	fmt = find_format_by_code(mbus_fmt.code);
++	if (!fmt)
++		return -EINVAL;
++
++	node->fmt = fmt;
++	node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++	*f = node->v_fmt;
++
++	return 0;
++}
++
++static
++const struct unicam_fmt *get_first_supported_format(struct unicam_device *dev)
++{
++	struct v4l2_subdev_mbus_code_enum mbus_code;
++	const struct unicam_fmt *fmt = NULL;
++	unsigned int i;
++	int ret;
++
++	for (i = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++i) {
++		memset(&mbus_code, 0, sizeof(mbus_code));
++		mbus_code.index = i;
++		mbus_code.pad = IMAGE_PAD;
++		mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
++
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
++				       &mbus_code);
++		if (ret < 0) {
++			unicam_dbg(2, dev,
++				   "subdev->enum_mbus_code idx %u returned %d - continue\n",
++				   i, ret);
++			continue;
++		}
++
++		unicam_dbg(2, dev, "subdev %s: code: 0x%08x idx: %u\n",
++			   dev->sensor->name, mbus_code.code, i);
++
++		fmt = find_format_by_code(mbus_code.code);
++		unicam_dbg(2, dev, "fmt 0x%08x returned as %p, V4L2 FOURCC 0x%08x, csi_dt 0x%02x\n",
++			   mbus_code.code, fmt, fmt ? fmt->fourcc : 0,
++			   fmt ? fmt->csi_dt : 0);
++		if (fmt)
++			return fmt;
++	}
++
++	return NULL;
++}
++
++static int unicam_try_fmt_vid_cap(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_format sd_fmt = {
++		.which = V4L2_SUBDEV_FORMAT_TRY,
++		.pad = IMAGE_PAD
++	};
++	struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
++	const struct unicam_fmt *fmt;
++	int ret;
++
++	if (node->pad_id != IMAGE_PAD)
++		return -EINVAL;
++
++	fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
++	if (!fmt) {
++		/*
++		 * Pixel format not supported by unicam. Choose the first
++		 * supported format, and let the sensor choose something else.
++		 */
++		unicam_dbg(3, dev, "Fourcc format (0x%08x) not found. Use first format.\n",
++			   f->fmt.pix.pixelformat);
++
++		fmt = &formats[0];
++		f->fmt.pix.pixelformat = fmt->fourcc;
++	}
++
++	v4l2_fill_mbus_format(mbus_fmt, &f->fmt.pix, fmt->code);
++	/*
++	 * No support for receiving interlaced video, so never
++	 * request it from the sensor subdev.
++	 */
++	mbus_fmt->field = V4L2_FIELD_NONE;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
++			       &sd_fmt);
++	if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
++		return ret;
++
++	if (mbus_fmt->field != V4L2_FIELD_NONE)
++		unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
++
++	v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
++	if (mbus_fmt->code != fmt->code) {
++		/* Sensor has returned an alternate format */
++		fmt = find_format_by_code(mbus_fmt->code);
++		if (!fmt) {
++			/*
++			 * The alternate format is one unicam can't support.
++			 * Find the first format that is supported by both, and
++			 * then set that.
++			 */
++			fmt = get_first_supported_format(dev);
++			mbus_fmt->code = fmt->code;
++
++			ret = v4l2_subdev_call(dev->sensor, pad, set_fmt,
++					       dev->sensor_config, &sd_fmt);
++			if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
++				return ret;
++
++			if (mbus_fmt->field != V4L2_FIELD_NONE)
++				unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
++
++			v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
++
++			if (mbus_fmt->code != fmt->code) {
++				/*
++				 * We've set a format that the sensor reports
++				 * as being supported, but it refuses to set it.
++				 * Not much else we can do.
++				 * Assume that the sensor driver may accept the
++				 * format when it is set (rather than tried).
++				 */
++				unicam_err(dev, "Sensor won't accept default format, and Unicam can't support sensor default\n");
++			}
++		}
++
++		if (fmt->fourcc)
++			f->fmt.pix.pixelformat = fmt->fourcc;
++		else
++			f->fmt.pix.pixelformat = fmt->repacked_fourcc;
++	}
++
++	return unicam_calc_format_size_bpl(dev, fmt, f);
++}
++
++static int unicam_s_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct vb2_queue *q = &node->buffer_queue;
++	struct v4l2_mbus_framefmt mbus_fmt = {0};
++	const struct unicam_fmt *fmt;
++	int ret;
++
++	if (vb2_is_busy(q))
++		return -EBUSY;
++
++	ret = unicam_try_fmt_vid_cap(file, priv, f);
++	if (ret < 0)
++		return ret;
++
++	fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
++	if (!fmt) {
++		/*
++		 * Unknown pixel format - adopt a default.
++		 * This shouldn't happen as try_fmt should have resolved any
++		 * issues first.
++		 */
++		fmt = get_first_supported_format(dev);
++		if (!fmt)
++			/*
++			 * It shouldn't be possible to get here with no
++			 * supported formats
++			 */
++			return -EINVAL;
++		f->fmt.pix.pixelformat = fmt->fourcc;
++		return -EINVAL;
++	}
++
++	v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
++
++	ret = __subdev_set_format(dev, &mbus_fmt, node->pad_id);
++	if (ret) {
++		unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
++			   __func__, ret);
++		return ret;
++	}
++
++	/* Just double check nothing has gone wrong */
++	if (mbus_fmt.code != fmt->code) {
++		unicam_dbg(3, dev,
++			   "%s subdev changed format on us, this should not happen\n",
++			   __func__);
++		return -EINVAL;
++	}
++
++	node->fmt = fmt;
++	node->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
++	node->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
++	unicam_reset_format(node);
++
++	unicam_dbg(3, dev,
++		   "%s %dx%d, mbus_fmt 0x%08X, V4L2 pix 0x%08X.\n",
++		   __func__, node->v_fmt.fmt.pix.width,
++		   node->v_fmt.fmt.pix.height, mbus_fmt.code,
++		   node->v_fmt.fmt.pix.pixelformat);
++
++	*f = node->v_fmt;
++
++	return 0;
++}
++
++static int unicam_enum_fmt_meta_cap(struct file *file, void *priv,
++				    struct v4l2_fmtdesc *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt;
++	u32 code;
++	int ret = 0;
++
++	if (node->pad_id != METADATA_PAD || f->index != 0)
++		return -EINVAL;
++
++	if (dev->sensor_embedded_data) {
++		struct v4l2_subdev_mbus_code_enum mbus_code = {
++			.index = f->index,
++			.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++			.pad = METADATA_PAD,
++		};
++
++		ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
++				       &mbus_code);
++		if (ret < 0) {
++			unicam_dbg(2, dev,
++				   "subdev->enum_mbus_code idx 0 returned %d - index invalid\n",
++				   ret);
++			return -EINVAL;
++		}
++
++		code = mbus_code.code;
++	} else {
++		code = MEDIA_BUS_FMT_SENSOR_DATA;
++	}
++
++	fmt = find_format_by_code(code);
++	if (fmt)
++		f->pixelformat = fmt->fourcc;
++
++	return 0;
++}
++
++static int unicam_g_fmt_meta_cap(struct file *file, void *priv,
++				 struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	if (node->pad_id != METADATA_PAD)
++		return -EINVAL;
++
++	*f = node->v_fmt;
++
++	return 0;
++}
++
++static int unicam_queue_setup(struct vb2_queue *vq,
++			      unsigned int *nbuffers,
++			      unsigned int *nplanes,
++			      unsigned int sizes[],
++			      struct device *alloc_devs[])
++{
++	struct unicam_node *node = vb2_get_drv_priv(vq);
++	struct unicam_device *dev = node->dev;
++	unsigned int size = node->pad_id == IMAGE_PAD ?
++				    node->v_fmt.fmt.pix.sizeimage :
++				    node->v_fmt.fmt.meta.buffersize;
++
++	if (vq->num_buffers + *nbuffers < 3)
++		*nbuffers = 3 - vq->num_buffers;
++
++	if (*nplanes) {
++		if (sizes[0] < size) {
++			unicam_err(dev, "sizes[0] %i < size %u\n", sizes[0],
++				   size);
++			return -EINVAL;
++		}
++		size = sizes[0];
++	}
++
++	*nplanes = 1;
++	sizes[0] = size;
++
++	return 0;
++}
++
++static int unicam_buffer_prepare(struct vb2_buffer *vb)
++{
++	struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
++	struct unicam_device *dev = node->dev;
++	struct unicam_buffer *buf = to_unicam_buffer(vb);
++	unsigned long size;
++
++	if (WARN_ON(!node->fmt))
++		return -EINVAL;
++
++	size = node->pad_id == IMAGE_PAD ? node->v_fmt.fmt.pix.sizeimage :
++					   node->v_fmt.fmt.meta.buffersize;
++	if (vb2_plane_size(vb, 0) < size) {
++		unicam_err(dev, "data will not fit into plane (%lu < %lu)\n",
++			   vb2_plane_size(vb, 0), size);
++		return -EINVAL;
++	}
++
++	vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
++	return 0;
++}
++
++static void unicam_buffer_queue(struct vb2_buffer *vb)
++{
++	struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
++	struct unicam_buffer *buf = to_unicam_buffer(vb);
++	unsigned long flags;
++
++	spin_lock_irqsave(&node->dma_queue_lock, flags);
++	list_add_tail(&buf->list, &node->dma_queue);
++	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
++}
++
++static void unicam_set_packing_config(struct unicam_device *dev)
++{
++	u32 pack, unpack;
++	u32 val;
++
++	if (dev->node[IMAGE_PAD].v_fmt.fmt.pix.pixelformat ==
++	    dev->node[IMAGE_PAD].fmt->fourcc) {
++		unpack = UNICAM_PUM_NONE;
++		pack = UNICAM_PPM_NONE;
++	} else {
++		switch (dev->node[IMAGE_PAD].fmt->depth) {
++		case 8:
++			unpack = UNICAM_PUM_UNPACK8;
++			break;
++		case 10:
++			unpack = UNICAM_PUM_UNPACK10;
++			break;
++		case 12:
++			unpack = UNICAM_PUM_UNPACK12;
++			break;
++		case 14:
++			unpack = UNICAM_PUM_UNPACK14;
++			break;
++		case 16:
++			unpack = UNICAM_PUM_UNPACK16;
++			break;
++		default:
++			unpack = UNICAM_PUM_NONE;
++			break;
++		}
++
++		/* Repacking is always to 16bpp */
++		pack = UNICAM_PPM_PACK16;
++	}
++
++	val = 0;
++	set_field(&val, unpack, UNICAM_PUM_MASK);
++	set_field(&val, pack, UNICAM_PPM_MASK);
++	reg_write(dev, UNICAM_IPIPE, val);
++}
++
++static void unicam_cfg_image_id(struct unicam_device *dev)
++{
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		/* CSI2 mode, hardcode VC 0 for now. */
++		reg_write(dev, UNICAM_IDI0,
++			  (0 << 6) | dev->node[IMAGE_PAD].fmt->csi_dt);
++	} else {
++		/* CCP2 mode */
++		reg_write(dev, UNICAM_IDI0,
++			  0x80 | dev->node[IMAGE_PAD].fmt->csi_dt);
++	}
++}
++
++static void unicam_enable_ed(struct unicam_device *dev)
++{
++	u32 val = reg_read(dev, UNICAM_DCS);
++
++	set_field(&val, 2, UNICAM_EDL_MASK);
++	/* Do not wrap at the end of the embedded data buffer */
++	set_field(&val, 0, UNICAM_DBOB);
++
++	reg_write(dev, UNICAM_DCS, val);
++}
++
++static void unicam_start_rx(struct unicam_device *dev, dma_addr_t *addr)
++{
++	int line_int_freq = dev->node[IMAGE_PAD].v_fmt.fmt.pix.height >> 2;
++	unsigned int size, i;
++	u32 val;
++
++	if (line_int_freq < 128)
++		line_int_freq = 128;
++
++	/* Enable lane clocks */
++	val = 1;
++	for (i = 0; i < dev->active_data_lanes; i++)
++		val = val << 2 | 1;
++	clk_write(dev, val);
++
++	/* Basic init */
++	reg_write(dev, UNICAM_CTRL, UNICAM_MEM);
++
++	/* Enable analogue control, and leave in reset. */
++	val = UNICAM_AR;
++	set_field(&val, 7, UNICAM_CTATADJ_MASK);
++	set_field(&val, 7, UNICAM_PTATADJ_MASK);
++	reg_write(dev, UNICAM_ANA, val);
++	usleep_range(1000, 2000);
++
++	/* Come out of reset */
++	reg_write_field(dev, UNICAM_ANA, 0, UNICAM_AR);
++
++	/* Peripheral reset */
++	reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_CPR);
++	reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPR);
++
++	reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPE);
++
++	/* Enable Rx control. */
++	val = reg_read(dev, UNICAM_CTRL);
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		set_field(&val, UNICAM_CPM_CSI2, UNICAM_CPM_MASK);
++		set_field(&val, UNICAM_DCM_STROBE, UNICAM_DCM_MASK);
++	} else {
++		set_field(&val, UNICAM_CPM_CCP2, UNICAM_CPM_MASK);
++		set_field(&val, dev->bus_flags, UNICAM_DCM_MASK);
++	}
++	/* Packet framer timeout */
++	set_field(&val, 0xf, UNICAM_PFT_MASK);
++	set_field(&val, 128, UNICAM_OET_MASK);
++	reg_write(dev, UNICAM_CTRL, val);
++
++	reg_write(dev, UNICAM_IHWIN, 0);
++	reg_write(dev, UNICAM_IVWIN, 0);
++
++	/* AXI bus access QoS setup */
++	val = reg_read(dev, UNICAM_PRI);
++	set_field(&val, 0, UNICAM_BL_MASK);
++	set_field(&val, 0, UNICAM_BS_MASK);
++	set_field(&val, 0xe, UNICAM_PP_MASK);
++	set_field(&val, 8, UNICAM_NP_MASK);
++	set_field(&val, 2, UNICAM_PT_MASK);
++	set_field(&val, 1, UNICAM_PE);
++	reg_write(dev, UNICAM_PRI, val);
++
++	reg_write_field(dev, UNICAM_ANA, 0, UNICAM_DDL);
++
++	/* Always start in trigger frame capture mode (UNICAM_FCM set) */
++	val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM | UNICAM_IBOB;
++	set_field(&val, line_int_freq, UNICAM_LCIE_MASK);
++	reg_write(dev, UNICAM_ICTL, val);
++	reg_write(dev, UNICAM_STA, UNICAM_STA_MASK_ALL);
++	reg_write(dev, UNICAM_ISTA, UNICAM_ISTA_MASK_ALL);
++
++	/* tclk_term_en */
++	reg_write_field(dev, UNICAM_CLT, 2, UNICAM_CLT1_MASK);
++	/* tclk_settle */
++	reg_write_field(dev, UNICAM_CLT, 6, UNICAM_CLT2_MASK);
++	/* td_term_en */
++	reg_write_field(dev, UNICAM_DLT, 2, UNICAM_DLT1_MASK);
++	/* ths_settle */
++	reg_write_field(dev, UNICAM_DLT, 6, UNICAM_DLT2_MASK);
++	/* trx_enable */
++	reg_write_field(dev, UNICAM_DLT, 0, UNICAM_DLT3_MASK);
++
++	reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_SOE);
++
++	/* Packet compare setup - required to avoid missing frame ends */
++	val = 0;
++	set_field(&val, 1, UNICAM_PCE);
++	set_field(&val, 1, UNICAM_GI);
++	set_field(&val, 1, UNICAM_CPH);
++	set_field(&val, 0, UNICAM_PCVC_MASK);
++	set_field(&val, 1, UNICAM_PCDT_MASK);
++	reg_write(dev, UNICAM_CMP0, val);
++
++	/* Enable clock lane and set up terminations */
++	val = 0;
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		/* CSI2 */
++		set_field(&val, 1, UNICAM_CLE);
++		set_field(&val, 1, UNICAM_CLLPE);
++		if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
++			set_field(&val, 1, UNICAM_CLTRE);
++			set_field(&val, 1, UNICAM_CLHSE);
++		}
++	} else {
++		/* CCP2 */
++		set_field(&val, 1, UNICAM_CLE);
++		set_field(&val, 1, UNICAM_CLHSE);
++		set_field(&val, 1, UNICAM_CLTRE);
++	}
++	reg_write(dev, UNICAM_CLK, val);
++
++	/*
++	 * Enable required data lanes with appropriate terminations.
++	 * The same value needs to be written to UNICAM_DATn registers for
++	 * the active lanes, and 0 for inactive ones.
++	 */
++	val = 0;
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		/* CSI2 */
++		set_field(&val, 1, UNICAM_DLE);
++		set_field(&val, 1, UNICAM_DLLPE);
++		if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
++			set_field(&val, 1, UNICAM_DLTRE);
++			set_field(&val, 1, UNICAM_DLHSE);
++		}
++	} else {
++		/* CCP2 */
++		set_field(&val, 1, UNICAM_DLE);
++		set_field(&val, 1, UNICAM_DLHSE);
++		set_field(&val, 1, UNICAM_DLTRE);
++	}
++	reg_write(dev, UNICAM_DAT0, val);
++
++	if (dev->active_data_lanes == 1)
++		val = 0;
++	reg_write(dev, UNICAM_DAT1, val);
++
++	if (dev->max_data_lanes > 2) {
++		/*
++		 * Registers UNICAM_DAT2 and UNICAM_DAT3 only valid if the
++		 * instance supports more than 2 data lanes.
++		 */
++		if (dev->active_data_lanes == 2)
++			val = 0;
++		reg_write(dev, UNICAM_DAT2, val);
++
++		if (dev->active_data_lanes == 3)
++			val = 0;
++		reg_write(dev, UNICAM_DAT3, val);
++	}
++
++	reg_write(dev, UNICAM_IBLS,
++		  dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline);
++	size = dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage;
++	unicam_wr_dma_addr(dev, addr[IMAGE_PAD], size, IMAGE_PAD);
++	unicam_set_packing_config(dev);
++	unicam_cfg_image_id(dev);
++
++	val = reg_read(dev, UNICAM_MISC);
++	set_field(&val, 1, UNICAM_FL0);
++	set_field(&val, 1, UNICAM_FL1);
++	reg_write(dev, UNICAM_MISC, val);
++
++	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data) {
++		size = dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
++		unicam_enable_ed(dev);
++		unicam_wr_dma_addr(dev, addr[METADATA_PAD], size, METADATA_PAD);
++	}
++
++	/* Enable peripheral */
++	reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_CPE);
++
++	/* Load image pointers */
++	reg_write_field(dev, UNICAM_ICTL, 1, UNICAM_LIP_MASK);
++
++	/* Load embedded data buffer pointers if needed */
++	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data)
++		reg_write_field(dev, UNICAM_DCS, 1, UNICAM_LDP);
++
++	/*
++	 * Enable trigger only for the first frame to
++	 * sync correctly to the FS from the source.
++	 */
++	reg_write_field(dev, UNICAM_ICTL, 1, UNICAM_TFC);
++}
++
++static void unicam_disable(struct unicam_device *dev)
++{
++	/* Analogue lane control disable */
++	reg_write_field(dev, UNICAM_ANA, 1, UNICAM_DDL);
++
++	/* Stop the output engine */
++	reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_SOE);
++
++	/* Disable the data lanes. */
++	reg_write(dev, UNICAM_DAT0, 0);
++	reg_write(dev, UNICAM_DAT1, 0);
++
++	if (dev->max_data_lanes > 2) {
++		reg_write(dev, UNICAM_DAT2, 0);
++		reg_write(dev, UNICAM_DAT3, 0);
++	}
++
++	/* Peripheral reset */
++	reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_CPR);
++	usleep_range(50, 100);
++	reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPR);
++
++	/* Disable peripheral */
++	reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPE);
++
++	/* Clear ED setup */
++	reg_write(dev, UNICAM_DCS, 0);
++
++	/* Disable all lane clocks */
++	clk_write(dev, 0);
++}
++
++static void unicam_return_buffers(struct unicam_node *node)
++{
++	struct unicam_buffer *buf, *tmp;
++	unsigned long flags;
++
++	spin_lock_irqsave(&node->dma_queue_lock, flags);
++	list_for_each_entry_safe(buf, tmp, &node->dma_queue, list) {
++		list_del(&buf->list);
++		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
++	}
++
++	if (node->cur_frm)
++		vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
++				VB2_BUF_STATE_ERROR);
++	if (node->next_frm && node->cur_frm != node->next_frm)
++		vb2_buffer_done(&node->next_frm->vb.vb2_buf,
++				VB2_BUF_STATE_ERROR);
++
++	node->cur_frm = NULL;
++	node->next_frm = NULL;
++	spin_unlock_irqrestore(&node->dma_queue_lock, flags);
++}
++
++static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count)
++{
++	struct unicam_node *node = vb2_get_drv_priv(vq);
++	struct unicam_device *dev = node->dev;
++	dma_addr_t buffer_addr[MAX_NODES] = { 0 };
++	unsigned long flags;
++	unsigned int i;
++	int ret;
++
++	node->streaming = true;
++	if (!unicam_all_nodes_streaming(dev)) {
++		unicam_dbg(3, dev, "Not all nodes are streaming yet.");
++		return 0;
++	}
++
++	dev->sequence = 0;
++	ret = unicam_runtime_get(dev);
++	if (ret < 0) {
++		unicam_dbg(3, dev, "unicam_runtime_get failed\n");
++		goto err_streaming;
++	}
++
++	/*
++	 * TODO: Retrieve the number of active data lanes from the connected
++	 * subdevice.
++	 */
++	dev->active_data_lanes = dev->max_data_lanes;
++
++	ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
++	if (ret) {
++		unicam_err(dev, "failed to set up clock\n");
++		goto err_pm_put;
++	}
++
++	ret = clk_prepare_enable(dev->clock);
++	if (ret) {
++		unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
++		goto err_pm_put;
++	}
++
++	for (i = 0; i < ARRAY_SIZE(dev->node); i++) {
++		struct unicam_buffer *buf;
++
++		if (!dev->node[i].streaming)
++			continue;
++
++		spin_lock_irqsave(&dev->node[i].dma_queue_lock, flags);
++		buf = list_first_entry(&dev->node[i].dma_queue,
++				       struct unicam_buffer, list);
++		dev->node[i].cur_frm = buf;
++		dev->node[i].next_frm = buf;
++		list_del(&buf->list);
++		spin_unlock_irqrestore(&dev->node[i].dma_queue_lock, flags);
++
++		buffer_addr[i] =
++			vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
++	}
++
++	unicam_start_rx(dev, buffer_addr);
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_stream, 1);
++	if (ret < 0) {
++		unicam_err(dev, "stream on failed in subdev\n");
++		goto err_disable_unicam;
++	}
++
++	return 0;
++
++err_disable_unicam:
++	unicam_disable(dev);
++	clk_disable_unprepare(dev->clock);
++err_pm_put:
++	unicam_runtime_put(dev);
++err_streaming:
++	unicam_return_buffers(node);
++	node->streaming = false;
++
++	return ret;
++}
++
++static void unicam_stop_streaming(struct vb2_queue *vq)
++{
++	struct unicam_node *node = vb2_get_drv_priv(vq);
++	struct unicam_device *dev = node->dev;
++
++	node->streaming = false;
++
++	if (node->pad_id == IMAGE_PAD) {
++		/*
++		 * Stop streaming the sensor and disable the peripheral.
++		 * We cannot continue streaming embedded data with the
++		 * image pad disabled.
++		 */
++		if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
++			unicam_err(dev, "stream off failed in subdev\n");
++
++		unicam_disable(dev);
++		clk_disable_unprepare(dev->clock);
++		unicam_runtime_put(dev);
++
++	} else if (node->pad_id == METADATA_PAD) {
++		/*
++		 * Allow the hardware to spin in the dummy buffer.
++		 * This is only really needed if the embedded data pad is
++		 * disabled before the image pad.
++		 */
++		unicam_wr_dma_addr(dev, node->dummy_buf_dma_addr,
++				   DUMMY_BUF_SIZE, METADATA_PAD);
++	}
++
++	/* Clear all queued buffers for the node */
++	unicam_return_buffers(node);
++}
++
++static int unicam_enum_input(struct file *file, void *priv,
++			     struct v4l2_input *inp)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	if (inp->index != 0)
++		return -EINVAL;
++
++	inp->type = V4L2_INPUT_TYPE_CAMERA;
++	if (v4l2_subdev_has_op(dev->sensor, video, s_dv_timings)) {
++		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
++		inp->std = 0;
++	} else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
++		inp->capabilities = V4L2_IN_CAP_STD;
++		if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std)
++					< 0)
++			inp->std = V4L2_STD_ALL;
++	} else {
++		inp->capabilities = 0;
++		inp->std = 0;
++	}
++	sprintf(inp->name, "Camera 0");
++	return 0;
++}
++
++static int unicam_g_input(struct file *file, void *priv, unsigned int *i)
++{
++	*i = 0;
++
++	return 0;
++}
++
++static int unicam_s_input(struct file *file, void *priv, unsigned int i)
++{
++	/*
++	 * FIXME: Ideally we would like to be able to query the source
++	 * subdevice for information over the input connectors it supports,
++	 * and map that through in to a call to video_ops->s_routing.
++	 * There is no infrastructure support for defining that within
++	 * devicetree at present. Until that is implemented we can't
++	 * map a user physical connector number to s_routing input number.
++	 */
++	if (i > 0)
++		return -EINVAL;
++
++	return 0;
++}
++
++static int unicam_querystd(struct file *file, void *priv,
++			   v4l2_std_id *std)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, querystd, std);
++}
++
++static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, g_std, std);
++}
++
++static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	int ret;
++	v4l2_std_id current_std;
++
++	ret = v4l2_subdev_call(dev->sensor, video, g_std, &current_std);
++	if (ret)
++		return ret;
++
++	if (std == current_std)
++		return 0;
++
++	if (vb2_is_busy(&node->buffer_queue))
++		return -EBUSY;
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
++
++	/* Force recomputation of bytesperline */
++	node->v_fmt.fmt.pix.bytesperline = 0;
++
++	unicam_reset_format(node);
++
++	return ret;
++}
++
++static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
++}
++
++static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
++}
++
++static int unicam_s_selection(struct file *file, void *priv,
++			      struct v4l2_selection *sel)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_selection sdsel = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.target = sel->target,
++		.flags = sel->flags,
++		.r = sel->r,
++	};
++
++	return v4l2_subdev_call(dev->sensor, pad, set_selection, NULL, &sdsel);
++}
++
++static int unicam_g_selection(struct file *file, void *priv,
++			      struct v4l2_selection *sel)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_selection sdsel = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.target = sel->target,
++	};
++	int ret;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, get_selection, NULL, &sdsel);
++	if (!ret)
++		sel->r = sdsel.r;
++
++	return ret;
++}
++
++static int unicam_enum_framesizes(struct file *file, void *priv,
++				  struct v4l2_frmsizeenum *fsize)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt;
++	struct v4l2_subdev_frame_size_enum fse;
++	int ret;
++
++	/* check for valid format */
++	fmt = find_format_by_pix(dev, fsize->pixel_format);
++	if (!fmt) {
++		unicam_dbg(3, dev, "Invalid pixel code: %x\n",
++			   fsize->pixel_format);
++		return -EINVAL;
++	}
++	fse.code = fmt->code;
++
++	fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
++	fse.index = fsize->index;
++	fse.pad = node->pad_id;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
++	if (ret)
++		return ret;
++
++	unicam_dbg(1, dev, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
++		   __func__, fse.index, fse.code, fse.min_width, fse.max_width,
++		   fse.min_height, fse.max_height);
++
++	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
++	fsize->discrete.width = fse.max_width;
++	fsize->discrete.height = fse.max_height;
++
++	return 0;
++}
++
++static int unicam_enum_frameintervals(struct file *file, void *priv,
++				      struct v4l2_frmivalenum *fival)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt;
++	struct v4l2_subdev_frame_interval_enum fie = {
++		.index = fival->index,
++		.width = fival->width,
++		.height = fival->height,
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++	};
++	int ret;
++
++	fmt = find_format_by_pix(dev, fival->pixel_format);
++	if (!fmt)
++		return -EINVAL;
++
++	fie.code = fmt->code;
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_interval,
++			       NULL, &fie);
++	if (ret)
++		return ret;
++
++	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
++	fival->discrete = fie.interval;
++
++	return 0;
++}
++
++static int unicam_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_g_parm_cap(video_devdata(file), dev->sensor, a);
++}
++
++static int unicam_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_s_parm_cap(video_devdata(file), dev->sensor, a);
++}
++
++static int unicam_g_dv_timings(struct file *file, void *priv,
++			       struct v4l2_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
++}
++
++static int unicam_s_dv_timings(struct file *file, void *priv,
++			       struct v4l2_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_dv_timings current_timings;
++	int ret;
++
++	ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
++			       &current_timings);
++
++	if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
++		return 0;
++
++	if (vb2_is_busy(&node->buffer_queue))
++		return -EBUSY;
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
++
++	/* Force recomputation of bytesperline */
++	node->v_fmt.fmt.pix.bytesperline = 0;
++
++	unicam_reset_format(node);
++
++	return ret;
++}
++
++static int unicam_query_dv_timings(struct file *file, void *priv,
++				   struct v4l2_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
++}
++
++static int unicam_enum_dv_timings(struct file *file, void *priv,
++				  struct v4l2_enum_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
++}
++
++static int unicam_dv_timings_cap(struct file *file, void *priv,
++				 struct v4l2_dv_timings_cap *cap)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
++}
++
++static int unicam_subscribe_event(struct v4l2_fh *fh,
++				  const struct v4l2_event_subscription *sub)
++{
++	switch (sub->type) {
++	case V4L2_EVENT_FRAME_SYNC:
++		return v4l2_event_subscribe(fh, sub, 2, NULL);
++	case V4L2_EVENT_SOURCE_CHANGE:
++		return v4l2_event_subscribe(fh, sub, 4, NULL);
++	}
++
++	return v4l2_ctrl_subscribe_event(fh, sub);
++}
++
++static int unicam_log_status(struct file *file, void *fh)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	u32 reg;
++
++	/* status for sub devices */
++	v4l2_device_call_all(&dev->v4l2_dev, 0, core, log_status);
++
++	unicam_info(dev, "-----Receiver status-----\n");
++	unicam_info(dev, "V4L2 width/height:   %ux%u\n",
++		    node->v_fmt.fmt.pix.width, node->v_fmt.fmt.pix.height);
++	unicam_info(dev, "Mediabus format:     %08x\n", node->fmt->code);
++	unicam_info(dev, "V4L2 format:         %08x\n",
++		    node->v_fmt.fmt.pix.pixelformat);
++	reg = reg_read(dev, UNICAM_IPIPE);
++	unicam_info(dev, "Unpacking/packing:   %u / %u\n",
++		    get_field(reg, UNICAM_PUM_MASK),
++		    get_field(reg, UNICAM_PPM_MASK));
++	unicam_info(dev, "----Live data----\n");
++	unicam_info(dev, "Programmed stride:   %4u\n",
++		    reg_read(dev, UNICAM_IBLS));
++	unicam_info(dev, "Detected resolution: %ux%u\n",
++		    reg_read(dev, UNICAM_IHSTA),
++		    reg_read(dev, UNICAM_IVSTA));
++	unicam_info(dev, "Write pointer:       %08x\n",
++		    reg_read(dev, UNICAM_IBWP));
++
++	return 0;
++}
++
++static void unicam_notify(struct v4l2_subdev *sd,
++			  unsigned int notification, void *arg)
++{
++	struct unicam_device *dev = to_unicam_device(sd->v4l2_dev);
++
++	switch (notification) {
++	case V4L2_DEVICE_NOTIFY_EVENT:
++		v4l2_event_queue(&dev->node[IMAGE_PAD].video_dev, arg);
++		break;
++	default:
++		break;
++	}
++}
++
++static const struct vb2_ops unicam_video_qops = {
++	.wait_prepare		= vb2_ops_wait_prepare,
++	.wait_finish		= vb2_ops_wait_finish,
++	.queue_setup		= unicam_queue_setup,
++	.buf_prepare		= unicam_buffer_prepare,
++	.buf_queue		= unicam_buffer_queue,
++	.start_streaming	= unicam_start_streaming,
++	.stop_streaming		= unicam_stop_streaming,
++};
++
++/*
++ * unicam_v4l2_open : This function is based on the v4l2_fh_open helper
++ * function. It has been augmented to handle sensor subdevice power management,
++ */
++static int unicam_v4l2_open(struct file *file)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	int ret;
++
++	mutex_lock(&node->lock);
++
++	ret = v4l2_fh_open(file);
++	if (ret) {
++		unicam_err(dev, "v4l2_fh_open failed\n");
++		goto unlock;
++	}
++
++	node->open++;
++
++	if (!v4l2_fh_is_singular_file(file))
++		goto unlock;
++
++	ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
++	if (ret < 0 && ret != -ENOIOCTLCMD) {
++		v4l2_fh_release(file);
++		node->open--;
++		goto unlock;
++	}
++
++	ret = 0;
++
++unlock:
++	mutex_unlock(&node->lock);
++	return ret;
++}
++
++static int unicam_v4l2_release(struct file *file)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev *sd = dev->sensor;
++	bool fh_singular;
++	int ret;
++
++	mutex_lock(&node->lock);
++
++	fh_singular = v4l2_fh_is_singular_file(file);
++
++	ret = _vb2_fop_release(file, NULL);
++
++	if (fh_singular)
++		v4l2_subdev_call(sd, core, s_power, 0);
++
++	node->open--;
++	mutex_unlock(&node->lock);
++
++	return ret;
++}
++
++/* unicam capture driver file operations */
++static const struct v4l2_file_operations unicam_fops = {
++	.owner		= THIS_MODULE,
++	.open		= unicam_v4l2_open,
++	.release	= unicam_v4l2_release,
++	.read		= vb2_fop_read,
++	.poll		= vb2_fop_poll,
++	.unlocked_ioctl	= video_ioctl2,
++	.mmap		= vb2_fop_mmap,
++};
++
++/* unicam capture ioctl operations */
++static const struct v4l2_ioctl_ops unicam_ioctl_ops = {
++	.vidioc_querycap		= unicam_querycap,
++	.vidioc_enum_fmt_vid_cap	= unicam_enum_fmt_vid_cap,
++	.vidioc_g_fmt_vid_cap		= unicam_g_fmt_vid_cap,
++	.vidioc_s_fmt_vid_cap		= unicam_s_fmt_vid_cap,
++	.vidioc_try_fmt_vid_cap		= unicam_try_fmt_vid_cap,
++
++	.vidioc_enum_fmt_meta_cap	= unicam_enum_fmt_meta_cap,
++	.vidioc_g_fmt_meta_cap		= unicam_g_fmt_meta_cap,
++	.vidioc_s_fmt_meta_cap		= unicam_g_fmt_meta_cap,
++	.vidioc_try_fmt_meta_cap	= unicam_g_fmt_meta_cap,
++
++	.vidioc_enum_input		= unicam_enum_input,
++	.vidioc_g_input			= unicam_g_input,
++	.vidioc_s_input			= unicam_s_input,
++
++	.vidioc_querystd		= unicam_querystd,
++	.vidioc_s_std			= unicam_s_std,
++	.vidioc_g_std			= unicam_g_std,
++
++	.vidioc_g_edid			= unicam_g_edid,
++	.vidioc_s_edid			= unicam_s_edid,
++
++	.vidioc_enum_framesizes		= unicam_enum_framesizes,
++	.vidioc_enum_frameintervals	= unicam_enum_frameintervals,
++
++	.vidioc_g_selection		= unicam_g_selection,
++	.vidioc_s_selection		= unicam_s_selection,
++
++	.vidioc_g_parm			= unicam_g_parm,
++	.vidioc_s_parm			= unicam_s_parm,
++
++	.vidioc_s_dv_timings		= unicam_s_dv_timings,
++	.vidioc_g_dv_timings		= unicam_g_dv_timings,
++	.vidioc_query_dv_timings	= unicam_query_dv_timings,
++	.vidioc_enum_dv_timings		= unicam_enum_dv_timings,
++	.vidioc_dv_timings_cap		= unicam_dv_timings_cap,
++
++	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
++	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
++	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
++	.vidioc_querybuf		= vb2_ioctl_querybuf,
++	.vidioc_qbuf			= vb2_ioctl_qbuf,
++	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
++	.vidioc_expbuf			= vb2_ioctl_expbuf,
++	.vidioc_streamon		= vb2_ioctl_streamon,
++	.vidioc_streamoff		= vb2_ioctl_streamoff,
++
++	.vidioc_log_status		= unicam_log_status,
++	.vidioc_subscribe_event		= unicam_subscribe_event,
++	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
++};
++
++static int
++unicam_async_bound(struct v4l2_async_notifier *notifier,
++		   struct v4l2_subdev *subdev,
++		   struct v4l2_async_subdev *asd)
++{
++	struct unicam_device *unicam = to_unicam_device(notifier->v4l2_dev);
++
++	if (unicam->sensor) {
++		unicam_info(unicam, "Rejecting subdev %s (Already set!!)",
++			    subdev->name);
++		return 0;
++	}
++
++	unicam->sensor = subdev;
++	unicam_dbg(1, unicam, "Using sensor %s for capture\n", subdev->name);
++
++	return 0;
++}
++
++static void unicam_release(struct kref *kref)
++{
++	struct unicam_device *unicam =
++		container_of(kref, struct unicam_device, kref);
++
++	v4l2_ctrl_handler_free(&unicam->ctrl_handler);
++	media_device_cleanup(&unicam->mdev);
++
++	if (unicam->sensor_config)
++		v4l2_subdev_free_pad_config(unicam->sensor_config);
++
++	kfree(unicam);
++}
++
++static void unicam_put(struct unicam_device *unicam)
++{
++	kref_put(&unicam->kref, unicam_release);
++}
++
++static void unicam_get(struct unicam_device *unicam)
++{
++	kref_get(&unicam->kref);
++}
++
++static void unicam_node_release(struct video_device *vdev)
++{
++	struct unicam_node *node = video_get_drvdata(vdev);
++
++	unicam_put(node->dev);
++}
++
++static int register_node(struct unicam_device *unicam, struct unicam_node *node,
++			 enum v4l2_buf_type type, int pad_id)
++{
++	struct video_device *vdev;
++	struct vb2_queue *q;
++	struct v4l2_mbus_framefmt mbus_fmt = {0};
++	const struct unicam_fmt *fmt;
++	int ret;
++
++	if (pad_id == IMAGE_PAD) {
++		ret = __subdev_get_format(unicam, &mbus_fmt, pad_id);
++		if (ret) {
++			unicam_err(unicam, "Failed to get_format - ret %d\n",
++				   ret);
++			return ret;
++		}
++
++		fmt = find_format_by_code(mbus_fmt.code);
++		if (!fmt) {
++			/*
++			 * Find the first format that the sensor and unicam both
++			 * support
++			 */
++			fmt = get_first_supported_format(unicam);
++
++			if (!fmt)
++				/* No compatible formats */
++				return -EINVAL;
++
++			mbus_fmt.code = fmt->code;
++			ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
++			if (ret)
++				return -EINVAL;
++		}
++		if (mbus_fmt.field != V4L2_FIELD_NONE) {
++			/* Interlaced not supported - disable it now. */
++			mbus_fmt.field = V4L2_FIELD_NONE;
++			ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
++			if (ret)
++				return -EINVAL;
++		}
++
++		node->v_fmt.fmt.pix.pixelformat = fmt->fourcc ? fmt->fourcc
++						: fmt->repacked_fourcc;
++	} else {
++		/* Fix this node format as embedded data. */
++		fmt = find_format_by_code(MEDIA_BUS_FMT_SENSOR_DATA);
++		node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
++	}
++
++	node->dev = unicam;
++	node->pad_id = pad_id;
++	node->fmt = fmt;
++
++	/* Read current subdev format */
++	unicam_reset_format(node);
++
++	if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
++		v4l2_std_id tvnorms;
++
++		if (WARN_ON(!v4l2_subdev_has_op(unicam->sensor, video,
++						g_tvnorms)))
++			/*
++			 * Subdevice should not advertise s_std but not
++			 * g_tvnorms
++			 */
++			return -EINVAL;
++
++		ret = v4l2_subdev_call(unicam->sensor, video,
++				       g_tvnorms, &tvnorms);
++		if (WARN_ON(ret))
++			return -EINVAL;
++		node->video_dev.tvnorms |= tvnorms;
++	}
++
++	spin_lock_init(&node->dma_queue_lock);
++	mutex_init(&node->lock);
++
++	vdev = &node->video_dev;
++	if (pad_id == IMAGE_PAD) {
++		/* Add controls from the subdevice */
++		ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
++					    unicam->sensor->ctrl_handler, NULL,
++					    true);
++		if (ret < 0)
++			return ret;
++
++		/*
++		 * If the sensor subdevice has any controls, associate the node
++		 *  with the ctrl handler to allow access from userland.
++		 */
++		if (!list_empty(&unicam->ctrl_handler.ctrls))
++			vdev->ctrl_handler = &unicam->ctrl_handler;
++	}
++
++	q = &node->buffer_queue;
++	q->type = type;
++	q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
++	q->drv_priv = node;
++	q->ops = &unicam_video_qops;
++	q->mem_ops = &vb2_dma_contig_memops;
++	q->buf_struct_size = sizeof(struct unicam_buffer);
++	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
++	q->lock = &node->lock;
++	q->min_buffers_needed = 2;
++	q->dev = &unicam->pdev->dev;
++
++	ret = vb2_queue_init(q);
++	if (ret) {
++		unicam_err(unicam, "vb2_queue_init() failed\n");
++		return ret;
++	}
++
++	INIT_LIST_HEAD(&node->dma_queue);
++
++	vdev->release = unicam_node_release;
++	vdev->fops = &unicam_fops;
++	vdev->ioctl_ops = &unicam_ioctl_ops;
++	vdev->v4l2_dev = &unicam->v4l2_dev;
++	vdev->vfl_dir = VFL_DIR_RX;
++	vdev->queue = q;
++	vdev->lock = &node->lock;
++	vdev->device_caps = (pad_id == IMAGE_PAD) ?
++			    (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING) :
++			    (V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING);
++
++	/* Define the device names */
++	snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME,
++		 pad_id == IMAGE_PAD ? "image" : "embedded");
++
++	video_set_drvdata(vdev, node);
++	if (pad_id == IMAGE_PAD)
++		vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
++	node->pad.flags = MEDIA_PAD_FL_SINK;
++	media_entity_pads_init(&vdev->entity, 1, &node->pad);
++
++	node->dummy_buf_cpu_addr = dma_alloc_coherent(&unicam->pdev->dev,
++						      DUMMY_BUF_SIZE,
++						      &node->dummy_buf_dma_addr,
++						      GFP_KERNEL);
++	if (!node->dummy_buf_cpu_addr) {
++		unicam_err(unicam, "Unable to allocate dummy buffer.\n");
++		return -ENOMEM;
++	}
++
++	if (pad_id == METADATA_PAD) {
++		v4l2_disable_ioctl(vdev, VIDIOC_DQEVENT);
++		v4l2_disable_ioctl(vdev, VIDIOC_SUBSCRIBE_EVENT);
++		v4l2_disable_ioctl(vdev, VIDIOC_UNSUBSCRIBE_EVENT);
++	}
++	if (pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_STD);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUMSTD);
++	}
++	if (pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, querystd))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
++	if (pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_EDID);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_EDID);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_DV_TIMINGS_CAP);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_DV_TIMINGS);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_DV_TIMINGS);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_DV_TIMINGS);
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERY_DV_TIMINGS);
++	}
++	if (pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
++		v4l2_disable_ioctl(&node->video_dev,
++				   VIDIOC_ENUM_FRAMEINTERVALS);
++	if (pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
++	if (pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
++
++	if (pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_FRAMESIZES);
++
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, set_selection))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_SELECTION);
++
++	if (node->pad_id == METADATA_PAD ||
++	    !v4l2_subdev_has_op(unicam->sensor, pad, get_selection))
++		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_SELECTION);
++
++	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
++	if (ret) {
++		unicam_err(unicam, "Unable to register video device %s\n",
++			   vdev->name);
++		return ret;
++	}
++
++	/*
++	 * Acquire a reference to unicam, which will be released when the video
++	 * device will be unregistered and userspace will have closed all open
++	 * file handles.
++	 */
++	unicam_get(unicam);
++	node->registered = true;
++
++	if (pad_id != METADATA_PAD || unicam->sensor_embedded_data) {
++		ret = media_create_pad_link(&unicam->sensor->entity, pad_id,
++					    &node->video_dev.entity, 0,
++					    MEDIA_LNK_FL_ENABLED |
++					    MEDIA_LNK_FL_IMMUTABLE);
++		if (ret)
++			unicam_err(unicam, "Unable to create pad link for %s\n",
++				   vdev->name);
++	}
++
++	return ret;
++}
++
++static void unregister_nodes(struct unicam_device *unicam)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
++		struct unicam_node *node = &unicam->node[i];
++
++		if (node->dummy_buf_cpu_addr) {
++			dma_free_coherent(&unicam->pdev->dev, DUMMY_BUF_SIZE,
++					  node->dummy_buf_cpu_addr,
++					  node->dummy_buf_dma_addr);
++		}
++
++		if (node->registered) {
++			node->registered = false;
++			video_unregister_device(&node->video_dev);
++		}
++	}
++}
++
++static int unicam_probe_complete(struct unicam_device *unicam)
++{
++	int ret;
++
++	unicam->v4l2_dev.notify = unicam_notify;
++
++	unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
++	if (!unicam->sensor_config)
++		return -ENOMEM;
++
++	unicam->sensor_embedded_data = (unicam->sensor->entity.num_pads >= 2);
++
++	ret = register_node(unicam, &unicam->node[IMAGE_PAD],
++			    V4L2_BUF_TYPE_VIDEO_CAPTURE, IMAGE_PAD);
++	if (ret) {
++		unicam_err(unicam, "Unable to register image video device.\n");
++		goto unregister;
++	}
++
++	ret = register_node(unicam, &unicam->node[METADATA_PAD],
++			    V4L2_BUF_TYPE_META_CAPTURE, METADATA_PAD);
++	if (ret) {
++		unicam_err(unicam, "Unable to register metadata video device.\n");
++		goto unregister;
++	}
++
++	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
++	if (ret) {
++		unicam_err(unicam, "Unable to register subdev nodes.\n");
++		goto unregister;
++	}
++
++	/*
++	 * Release the initial reference, all references are now owned by the
++	 * video devices.
++	 */
++	unicam_put(unicam);
++	return 0;
++
++unregister:
++	unregister_nodes(unicam);
++	unicam_put(unicam);
++
++	return ret;
++}
++
++static int unicam_async_complete(struct v4l2_async_notifier *notifier)
++{
++	struct unicam_device *unicam = to_unicam_device(notifier->v4l2_dev);
++
++	return unicam_probe_complete(unicam);
++}
++
++static const struct v4l2_async_notifier_operations unicam_async_ops = {
++	.bound = unicam_async_bound,
++	.complete = unicam_async_complete,
++};
++
++static int of_unicam_connect_subdevs(struct unicam_device *dev)
++{
++	struct platform_device *pdev = dev->pdev;
++	struct v4l2_fwnode_endpoint ep = { 0 };
++	struct device_node *ep_node;
++	struct device_node *sensor_node;
++	unsigned int lane;
++	int ret = -EINVAL;
++
++	if (of_property_read_u32(pdev->dev.of_node, "brcm,num-data-lanes",
++				 &dev->max_data_lanes) < 0) {
++		unicam_err(dev, "number of data lanes not set\n");
++		return -EINVAL;
++	}
++
++	/* Get the local endpoint and remote device. */
++	ep_node = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
++	if (!ep_node) {
++		unicam_dbg(3, dev, "can't get next endpoint\n");
++		return -EINVAL;
++	}
++
++	unicam_dbg(3, dev, "ep_node is %pOF\n", ep_node);
++
++	sensor_node = of_graph_get_remote_port_parent(ep_node);
++	if (!sensor_node) {
++		unicam_dbg(3, dev, "can't get remote parent\n");
++		goto cleanup_exit;
++	}
++
++	unicam_dbg(1, dev, "found subdevice %pOF\n", sensor_node);
++
++	/* Parse the local endpoint and validate its configuration. */
++	v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_node), &ep);
++
++	unicam_dbg(3, dev, "parsed local endpoint, bus_type %u\n",
++		   ep.bus_type);
++
++	dev->bus_type = ep.bus_type;
++
++	switch (ep.bus_type) {
++	case V4L2_MBUS_CSI2_DPHY:
++		switch (ep.bus.mipi_csi2.num_data_lanes) {
++		case 1:
++		case 2:
++		case 4:
++			break;
++
++		default:
++			unicam_err(dev, "subdevice %pOF: %u data lanes not supported\n",
++				   sensor_node,
++				   ep.bus.mipi_csi2.num_data_lanes);
++			goto cleanup_exit;
++		}
++
++		for (lane = 0; lane < ep.bus.mipi_csi2.num_data_lanes; lane++) {
++			if (ep.bus.mipi_csi2.data_lanes[lane] != lane + 1) {
++				unicam_err(dev, "subdevice %pOF: data lanes reordering not supported\n",
++					   sensor_node);
++				goto cleanup_exit;
++			}
++		}
++
++		if (ep.bus.mipi_csi2.num_data_lanes > dev->max_data_lanes) {
++			unicam_err(dev, "subdevice requires %u data lanes when %u are supported\n",
++				   ep.bus.mipi_csi2.num_data_lanes,
++				   dev->max_data_lanes);
++		}
++
++		dev->max_data_lanes = ep.bus.mipi_csi2.num_data_lanes;
++		dev->bus_flags = ep.bus.mipi_csi2.flags;
++
++		break;
++
++	case V4L2_MBUS_CCP2:
++		if (ep.bus.mipi_csi1.clock_lane != 0 ||
++		    ep.bus.mipi_csi1.data_lane != 1) {
++			unicam_err(dev, "subdevice %pOF: unsupported lanes configuration\n",
++				   sensor_node);
++			goto cleanup_exit;
++		}
++
++		dev->max_data_lanes = 1;
++		dev->bus_flags = ep.bus.mipi_csi1.strobe;
++		break;
++
++	default:
++		/* Unsupported bus type */
++		unicam_err(dev, "subdevice %pOF: unsupported bus type %u\n",
++			   sensor_node, ep.bus_type);
++		goto cleanup_exit;
++	}
++
++	unicam_dbg(3, dev, "subdevice %pOF: %s bus, %u data lanes, flags=0x%08x\n",
++		   sensor_node,
++		   dev->bus_type == V4L2_MBUS_CSI2_DPHY ? "CSI-2" : "CCP2",
++		   dev->max_data_lanes, dev->bus_flags);
++
++	/* Initialize and register the async notifier. */
++	v4l2_async_notifier_init(&dev->notifier);
++	dev->notifier.ops = &unicam_async_ops;
++
++	dev->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
++	dev->asd.match.fwnode = of_fwnode_handle(sensor_node);
++	ret = v4l2_async_notifier_add_subdev(&dev->notifier, &dev->asd);
++	if (ret) {
++		unicam_err(dev, "Error adding subdevice: %d\n", ret);
++		goto cleanup_exit;
++	}
++
++	ret = v4l2_async_notifier_register(&dev->v4l2_dev, &dev->notifier);
++	if (ret) {
++		unicam_err(dev, "Error registering async notifier: %d\n", ret);
++		ret = -EINVAL;
++	}
++
++cleanup_exit:
++	of_node_put(sensor_node);
++	of_node_put(ep_node);
++
++	return ret;
++}
++
++static int unicam_probe(struct platform_device *pdev)
++{
++	struct unicam_device *unicam;
++	int ret;
++
++	unicam = kzalloc(sizeof(*unicam), GFP_KERNEL);
++	if (!unicam)
++		return -ENOMEM;
++
++	kref_init(&unicam->kref);
++	unicam->pdev = pdev;
++
++	unicam->base = devm_platform_ioremap_resource(pdev, 0);
++	if (IS_ERR(unicam->base)) {
++		unicam_err(unicam, "Failed to get main io block\n");
++		ret = PTR_ERR(unicam->base);
++		goto err_unicam_put;
++	}
++
++	unicam->clk_gate_base = devm_platform_ioremap_resource(pdev, 1);
++	if (IS_ERR(unicam->clk_gate_base)) {
++		unicam_err(unicam, "Failed to get 2nd io block\n");
++		ret = PTR_ERR(unicam->clk_gate_base);
++		goto err_unicam_put;
++	}
++
++	unicam->clock = devm_clk_get(&pdev->dev, "lp");
++	if (IS_ERR(unicam->clock)) {
++		unicam_err(unicam, "Failed to get clock\n");
++		ret = PTR_ERR(unicam->clock);
++		goto err_unicam_put;
++	}
++
++	ret = platform_get_irq(pdev, 0);
++	if (ret <= 0) {
++		dev_err(&pdev->dev, "No IRQ resource\n");
++		ret = -EINVAL;
++		goto err_unicam_put;
++	}
++
++	ret = devm_request_irq(&pdev->dev, ret, unicam_isr, 0,
++			       "unicam_capture0", unicam);
++	if (ret) {
++		dev_err(&pdev->dev, "Unable to request interrupt\n");
++		ret = -EINVAL;
++		goto err_unicam_put;
++	}
++
++	unicam->mdev.dev = &pdev->dev;
++	strscpy(unicam->mdev.model, UNICAM_MODULE_NAME,
++		sizeof(unicam->mdev.model));
++	strscpy(unicam->mdev.serial, "", sizeof(unicam->mdev.serial));
++	snprintf(unicam->mdev.bus_info, sizeof(unicam->mdev.bus_info),
++		 "platform:%s", dev_name(&pdev->dev));
++	unicam->mdev.hw_revision = 0;
++
++	media_device_init(&unicam->mdev);
++
++	unicam->v4l2_dev.mdev = &unicam->mdev;
++
++	ret = v4l2_device_register(&pdev->dev, &unicam->v4l2_dev);
++	if (ret) {
++		unicam_err(unicam,
++			   "Unable to register v4l2 device.\n");
++		goto err_unicam_put;
++	}
++
++	ret = media_device_register(&unicam->mdev);
++	if (ret < 0) {
++		unicam_err(unicam,
++			   "Unable to register media-controller device.\n");
++		goto err_v4l2_unregister;
++	}
++
++	/* Reserve space for the controls */
++	ret = v4l2_ctrl_handler_init(&unicam->ctrl_handler, 16);
++	if (ret < 0)
++		goto err_media_unregister;
++
++	/* set the driver data in platform device */
++	platform_set_drvdata(pdev, unicam);
++
++	ret = of_unicam_connect_subdevs(unicam);
++	if (ret) {
++		dev_err(&pdev->dev, "Failed to connect subdevs\n");
++		goto err_media_unregister;
++	}
++
++	/* Enable the block power domain */
++	pm_runtime_enable(&pdev->dev);
++
++	return 0;
++
++err_media_unregister:
++	media_device_unregister(&unicam->mdev);
++err_v4l2_unregister:
++	v4l2_device_unregister(&unicam->v4l2_dev);
++err_unicam_put:
++	unicam_put(unicam);
++
++	return ret;
++}
++
++static int unicam_remove(struct platform_device *pdev)
++{
++	struct unicam_device *unicam = platform_get_drvdata(pdev);
++
++	unicam_dbg(2, unicam, "%s\n", __func__);
++
++	v4l2_async_notifier_unregister(&unicam->notifier);
++	v4l2_device_unregister(&unicam->v4l2_dev);
++	media_device_unregister(&unicam->mdev);
++	unregister_nodes(unicam);
++
++	pm_runtime_disable(&pdev->dev);
++
++	return 0;
++}
++
++static const struct of_device_id unicam_of_match[] = {
++	{ .compatible = "brcm,bcm2835-unicam", },
++	{ /* sentinel */ },
++};
++MODULE_DEVICE_TABLE(of, unicam_of_match);
++
++static struct platform_driver unicam_driver = {
++	.probe		= unicam_probe,
++	.remove		= unicam_remove,
++	.driver = {
++		.name	= UNICAM_MODULE_NAME,
++		.of_match_table = of_match_ptr(unicam_of_match),
++	},
++};
++
++module_platform_driver(unicam_driver);
++
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
++MODULE_DESCRIPTION("BCM2835 Unicam driver");
++MODULE_LICENSE("GPL");
++MODULE_VERSION(UNICAM_VERSION);
+--- /dev/null
++++ b/drivers/media/platform/bcm2835/vc4-regs-unicam.h
+@@ -0,0 +1,253 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++/*
++ * Copyright (C) 2017-2020 Raspberry Pi Trading.
++ * Dave Stevenson <dave.stevenson@raspberrypi.com>
++ */
++
++#ifndef VC4_REGS_UNICAM_H
++#define VC4_REGS_UNICAM_H
++
++/*
++ * The following values are taken from files found within the code drop
++ * made by Broadcom for the BCM21553 Graphics Driver, predominantly in
++ * brcm_usrlib/dag/vmcsx/vcinclude/hardware_vc4.h.
++ * They have been modified to be only the register offset.
++ */
++#define UNICAM_CTRL	0x000
++#define UNICAM_STA	0x004
++#define UNICAM_ANA	0x008
++#define UNICAM_PRI	0x00c
++#define UNICAM_CLK	0x010
++#define UNICAM_CLT	0x014
++#define UNICAM_DAT0	0x018
++#define UNICAM_DAT1	0x01c
++#define UNICAM_DAT2	0x020
++#define UNICAM_DAT3	0x024
++#define UNICAM_DLT	0x028
++#define UNICAM_CMP0	0x02c
++#define UNICAM_CMP1	0x030
++#define UNICAM_CAP0	0x034
++#define UNICAM_CAP1	0x038
++#define UNICAM_ICTL	0x100
++#define UNICAM_ISTA	0x104
++#define UNICAM_IDI0	0x108
++#define UNICAM_IPIPE	0x10c
++#define UNICAM_IBSA0	0x110
++#define UNICAM_IBEA0	0x114
++#define UNICAM_IBLS	0x118
++#define UNICAM_IBWP	0x11c
++#define UNICAM_IHWIN	0x120
++#define UNICAM_IHSTA	0x124
++#define UNICAM_IVWIN	0x128
++#define UNICAM_IVSTA	0x12c
++#define UNICAM_ICC	0x130
++#define UNICAM_ICS	0x134
++#define UNICAM_IDC	0x138
++#define UNICAM_IDPO	0x13c
++#define UNICAM_IDCA	0x140
++#define UNICAM_IDCD	0x144
++#define UNICAM_IDS	0x148
++#define UNICAM_DCS	0x200
++#define UNICAM_DBSA0	0x204
++#define UNICAM_DBEA0	0x208
++#define UNICAM_DBWP	0x20c
++#define UNICAM_DBCTL	0x300
++#define UNICAM_IBSA1	0x304
++#define UNICAM_IBEA1	0x308
++#define UNICAM_IDI1	0x30c
++#define UNICAM_DBSA1	0x310
++#define UNICAM_DBEA1	0x314
++#define UNICAM_MISC	0x400
++
++/*
++ * The following bitmasks are from the kernel released by Broadcom
++ * for Android - https://android.googlesource.com/kernel/bcm/
++ * The Rhea, Hawaii, and Java chips all contain the same VideoCore4
++ * Unicam block as BCM2835, as defined in eg
++ * arch/arm/mach-rhea/include/mach/rdb_A0/brcm_rdb_cam.h and similar.
++ * Values reworked to use the kernel BIT and GENMASK macros.
++ *
++ * Some of the bit mnenomics have been amended to match the datasheet.
++ */
++/* UNICAM_CTRL Register */
++#define UNICAM_CPE		BIT(0)
++#define UNICAM_MEM		BIT(1)
++#define UNICAM_CPR		BIT(2)
++#define UNICAM_CPM_MASK		GENMASK(3, 3)
++#define UNICAM_CPM_CSI2		0
++#define UNICAM_CPM_CCP2		1
++#define UNICAM_SOE		BIT(4)
++#define UNICAM_DCM_MASK		GENMASK(5, 5)
++#define UNICAM_DCM_STROBE	0
++#define UNICAM_DCM_DATA		1
++#define UNICAM_SLS		BIT(6)
++#define UNICAM_PFT_MASK		GENMASK(11, 8)
++#define UNICAM_OET_MASK		GENMASK(20, 12)
++
++/* UNICAM_STA Register */
++#define UNICAM_SYN		BIT(0)
++#define UNICAM_CS		BIT(1)
++#define UNICAM_SBE		BIT(2)
++#define UNICAM_PBE		BIT(3)
++#define UNICAM_HOE		BIT(4)
++#define UNICAM_PLE		BIT(5)
++#define UNICAM_SSC		BIT(6)
++#define UNICAM_CRCE		BIT(7)
++#define UNICAM_OES		BIT(8)
++#define UNICAM_IFO		BIT(9)
++#define UNICAM_OFO		BIT(10)
++#define UNICAM_BFO		BIT(11)
++#define UNICAM_DL		BIT(12)
++#define UNICAM_PS		BIT(13)
++#define UNICAM_IS		BIT(14)
++#define UNICAM_PI0		BIT(15)
++#define UNICAM_PI1		BIT(16)
++#define UNICAM_FSI_S		BIT(17)
++#define UNICAM_FEI_S		BIT(18)
++#define UNICAM_LCI_S		BIT(19)
++#define UNICAM_BUF0_RDY		BIT(20)
++#define UNICAM_BUF0_NO		BIT(21)
++#define UNICAM_BUF1_RDY		BIT(22)
++#define UNICAM_BUF1_NO		BIT(23)
++#define UNICAM_DI		BIT(24)
++
++#define UNICAM_STA_MASK_ALL \
++		(UNICAM_DL + \
++		UNICAM_SBE + \
++		UNICAM_PBE + \
++		UNICAM_HOE + \
++		UNICAM_PLE + \
++		UNICAM_SSC + \
++		UNICAM_CRCE + \
++		UNICAM_IFO + \
++		UNICAM_OFO + \
++		UNICAM_PS + \
++		UNICAM_PI0 + \
++		UNICAM_PI1)
++
++/* UNICAM_ANA Register */
++#define UNICAM_APD		BIT(0)
++#define UNICAM_BPD		BIT(1)
++#define UNICAM_AR		BIT(2)
++#define UNICAM_DDL		BIT(3)
++#define UNICAM_CTATADJ_MASK	GENMASK(7, 4)
++#define UNICAM_PTATADJ_MASK	GENMASK(11, 8)
++
++/* UNICAM_PRI Register */
++#define UNICAM_PE		BIT(0)
++#define UNICAM_PT_MASK		GENMASK(2, 1)
++#define UNICAM_NP_MASK		GENMASK(7, 4)
++#define UNICAM_PP_MASK		GENMASK(11, 8)
++#define UNICAM_BS_MASK		GENMASK(15, 12)
++#define UNICAM_BL_MASK		GENMASK(17, 16)
++
++/* UNICAM_CLK Register */
++#define UNICAM_CLE		BIT(0)
++#define UNICAM_CLPD		BIT(1)
++#define UNICAM_CLLPE		BIT(2)
++#define UNICAM_CLHSE		BIT(3)
++#define UNICAM_CLTRE		BIT(4)
++#define UNICAM_CLAC_MASK	GENMASK(8, 5)
++#define UNICAM_CLSTE		BIT(29)
++
++/* UNICAM_CLT Register */
++#define UNICAM_CLT1_MASK	GENMASK(7, 0)
++#define UNICAM_CLT2_MASK	GENMASK(15, 8)
++
++/* UNICAM_DATn Registers */
++#define UNICAM_DLE		BIT(0)
++#define UNICAM_DLPD		BIT(1)
++#define UNICAM_DLLPE		BIT(2)
++#define UNICAM_DLHSE		BIT(3)
++#define UNICAM_DLTRE		BIT(4)
++#define UNICAM_DLSM		BIT(5)
++#define UNICAM_DLFO		BIT(28)
++#define UNICAM_DLSTE		BIT(29)
++
++#define UNICAM_DAT_MASK_ALL (UNICAM_DLSTE + UNICAM_DLFO)
++
++/* UNICAM_DLT Register */
++#define UNICAM_DLT1_MASK	GENMASK(7, 0)
++#define UNICAM_DLT2_MASK	GENMASK(15, 8)
++#define UNICAM_DLT3_MASK	GENMASK(23, 16)
++
++/* UNICAM_ICTL Register */
++#define UNICAM_FSIE		BIT(0)
++#define UNICAM_FEIE		BIT(1)
++#define UNICAM_IBOB		BIT(2)
++#define UNICAM_FCM		BIT(3)
++#define UNICAM_TFC		BIT(4)
++#define UNICAM_LIP_MASK		GENMASK(6, 5)
++#define UNICAM_LCIE_MASK	GENMASK(28, 16)
++
++/* UNICAM_IDI0/1 Register */
++#define UNICAM_ID0_MASK		GENMASK(7, 0)
++#define UNICAM_ID1_MASK		GENMASK(15, 8)
++#define UNICAM_ID2_MASK		GENMASK(23, 16)
++#define UNICAM_ID3_MASK		GENMASK(31, 24)
++
++/* UNICAM_ISTA Register */
++#define UNICAM_FSI		BIT(0)
++#define UNICAM_FEI		BIT(1)
++#define UNICAM_LCI		BIT(2)
++
++#define UNICAM_ISTA_MASK_ALL (UNICAM_FSI + UNICAM_FEI + UNICAM_LCI)
++
++/* UNICAM_IPIPE Register */
++#define UNICAM_PUM_MASK		GENMASK(2, 0)
++		/* Unpacking modes */
++		#define UNICAM_PUM_NONE		0
++		#define UNICAM_PUM_UNPACK6	1
++		#define UNICAM_PUM_UNPACK7	2
++		#define UNICAM_PUM_UNPACK8	3
++		#define UNICAM_PUM_UNPACK10	4
++		#define UNICAM_PUM_UNPACK12	5
++		#define UNICAM_PUM_UNPACK14	6
++		#define UNICAM_PUM_UNPACK16	7
++#define UNICAM_DDM_MASK		GENMASK(6, 3)
++#define UNICAM_PPM_MASK		GENMASK(9, 7)
++		/* Packing modes */
++		#define UNICAM_PPM_NONE		0
++		#define UNICAM_PPM_PACK8	1
++		#define UNICAM_PPM_PACK10	2
++		#define UNICAM_PPM_PACK12	3
++		#define UNICAM_PPM_PACK14	4
++		#define UNICAM_PPM_PACK16	5
++#define UNICAM_DEM_MASK		GENMASK(11, 10)
++#define UNICAM_DEBL_MASK	GENMASK(14, 12)
++#define UNICAM_ICM_MASK		GENMASK(16, 15)
++#define UNICAM_IDM_MASK		GENMASK(17, 17)
++
++/* UNICAM_ICC Register */
++#define UNICAM_ICFL_MASK	GENMASK(4, 0)
++#define UNICAM_ICFH_MASK	GENMASK(9, 5)
++#define UNICAM_ICST_MASK	GENMASK(12, 10)
++#define UNICAM_ICLT_MASK	GENMASK(15, 13)
++#define UNICAM_ICLL_MASK	GENMASK(31, 16)
++
++/* UNICAM_DCS Register */
++#define UNICAM_DIE		BIT(0)
++#define UNICAM_DIM		BIT(1)
++#define UNICAM_DBOB		BIT(3)
++#define UNICAM_FDE		BIT(4)
++#define UNICAM_LDP		BIT(5)
++#define UNICAM_EDL_MASK		GENMASK(15, 8)
++
++/* UNICAM_DBCTL Register */
++#define UNICAM_DBEN		BIT(0)
++#define UNICAM_BUF0_IE		BIT(1)
++#define UNICAM_BUF1_IE		BIT(2)
++
++/* UNICAM_CMP[0,1] register */
++#define UNICAM_PCE		BIT(31)
++#define UNICAM_GI		BIT(9)
++#define UNICAM_CPH		BIT(8)
++#define UNICAM_PCVC_MASK	GENMASK(7, 6)
++#define UNICAM_PCDT_MASK	GENMASK(5, 0)
++
++/* UNICAM_MISC register */
++#define UNICAM_FL0		BIT(6)
++#define UNICAM_FL1		BIT(9)
++
++#endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0247-media-bcm2835-unicam-Add-support-for-get_mbus_config.patch b/target/linux/bcm27xx/patches-5.15/950-0247-media-bcm2835-unicam-Add-support-for-get_mbus_config.patch
new file mode 100644
index 0000000000..50dd3b8b6e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0247-media-bcm2835-unicam-Add-support-for-get_mbus_config.patch
@@ -0,0 +1,56 @@
+From 8aea3cbdd53ea33b91022ea80ee5df0ae297194b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 23 Jun 2020 14:32:51 +0100
+Subject: [PATCH] media: bcm2835-unicam: Add support for
+ get_mbus_config to set num lanes
+
+Use the get_mbus_config pad subdev call to allow a source to use
+fewer than the number of CSI2 lanes defined in device tree.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 31 ++++++++++++++++---
+ 1 file changed, 27 insertions(+), 4 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1639,12 +1639,35 @@ static int unicam_start_streaming(struct
+ 		goto err_streaming;
+ 	}
+ 
+-	/*
+-	 * TODO: Retrieve the number of active data lanes from the connected
+-	 * subdevice.
+-	 */
+ 	dev->active_data_lanes = dev->max_data_lanes;
+ 
++	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
++		struct v4l2_mbus_config mbus_config = { 0 };
++
++		ret = v4l2_subdev_call(dev->sensor, pad, get_mbus_config,
++				       0, &mbus_config);
++		if (ret < 0 && ret != -ENOIOCTLCMD) {
++			unicam_dbg(3, dev, "g_mbus_config failed\n");
++			goto err_pm_put;
++		}
++
++		dev->active_data_lanes =
++			(mbus_config.flags & V4L2_MBUS_CSI2_LANE_MASK) >>
++					__ffs(V4L2_MBUS_CSI2_LANE_MASK);
++		if (!dev->active_data_lanes)
++			dev->active_data_lanes = dev->max_data_lanes;
++		if (dev->active_data_lanes > dev->max_data_lanes) {
++			unicam_err(dev, "Device has requested %u data lanes, which is >%u configured in DT\n",
++				   dev->active_data_lanes,
++				   dev->max_data_lanes);
++			ret = -EINVAL;
++			goto err_pm_put;
++		}
++	}
++
++	unicam_dbg(1, dev, "Running with %u data lanes\n",
++		   dev->active_data_lanes);
++
+ 	ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
+ 	if (ret) {
+ 		unicam_err(dev, "failed to set up clock\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0248-media-bcm2835-unicam-Avoid-gcc-warning-over-0-on-end.patch b/target/linux/bcm27xx/patches-5.15/950-0248-media-bcm2835-unicam-Avoid-gcc-warning-over-0-on-end.patch
new file mode 100644
index 0000000000..270082687c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0248-media-bcm2835-unicam-Avoid-gcc-warning-over-0-on-end.patch
@@ -0,0 +1,27 @@
+From 740821bcab994ace7ea44a31b85157699d8401b1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 26 Jun 2020 15:53:44 +0100
+Subject: [PATCH] media: bcm2835-unicam: Avoid gcc warning over {0} on
+ endpoint
+
+Older gcc versions object to = { 0 } initialisation if the first
+elemtn in the structure is a substructure.
+
+Use = { } to avoid this compiler warning.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2586,7 +2586,7 @@ static const struct v4l2_async_notifier_
+ static int of_unicam_connect_subdevs(struct unicam_device *dev)
+ {
+ 	struct platform_device *pdev = dev->pdev;
+-	struct v4l2_fwnode_endpoint ep = { 0 };
++	struct v4l2_fwnode_endpoint ep = { };
+ 	struct device_node *ep_node;
+ 	struct device_node *sensor_node;
+ 	unsigned int lane;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0249-media-i2c-imx290-set-the-format-before-VIDIOC_SUBDEV.patch b/target/linux/bcm27xx/patches-5.15/950-0249-media-i2c-imx290-set-the-format-before-VIDIOC_SUBDEV.patch
new file mode 100644
index 0000000000..6acd7f34b4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0249-media-i2c-imx290-set-the-format-before-VIDIOC_SUBDEV.patch
@@ -0,0 +1,40 @@
+From e2d1526bc0029a25dc1aac46f63630cd876a978b Mon Sep 17 00:00:00 2001
+From: Andrey Konovalov <andrey.konovalov@linaro.org>
+Date: Fri, 12 Jun 2020 15:53:46 +0200
+Subject: [PATCH] media: i2c: imx290: set the format before
+ VIDIOC_SUBDEV_G_FMT is called
+
+Commit d46cfdc86c30d5ec768924f0b1e2683c8d20b671 upstream.
+
+With the current driver 'media-ctl -p' issued right after the imx290 driver
+is loaded prints:
+pad0: Source
+             [fmt:unknown/0x0]
+
+The format value of zero is due to the current_format field of the imx290
+struct not being initialized yet.
+
+As imx290_entity_init_cfg() calls imx290_set_fmt(), the current_mode field
+is also initialized, so the line which set current_mode to a default value
+in driver's probe() function is no longer needed.
+
+Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
+Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+---
+ drivers/media/i2c/imx290.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -1087,6 +1087,9 @@ static int imx290_probe(struct i2c_clien
+ 		goto free_ctrl;
+ 	}
+ 
++	/* Initialize the frame format (this also sets imx290->current_mode) */
++	imx290_entity_init_cfg(&imx290->sd, NULL);
++
+ 	ret = v4l2_async_register_subdev(&imx290->sd);
+ 	if (ret < 0) {
+ 		dev_err(dev, "Could not register v4l2 device\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0250-media-i2c-imx290-Add-support-for-74.25MHz-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0250-media-i2c-imx290-Add-support-for-74.25MHz-clock.patch
new file mode 100644
index 0000000000..916ab1e560
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0250-media-i2c-imx290-Add-support-for-74.25MHz-clock.patch
@@ -0,0 +1,264 @@
+From 9fe4d33587bd7931e2a0decc7c4881945a1c0ab3 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Jun 2020 08:28:51 +0100
+Subject: [PATCH] media: i2c: imx290: Add support for 74.25MHz clock
+
+The existing driver only supported a clock of 37.125MHz, but the
+sensor also supports 74.25MHz.
+
+Add the relevant register modifications to support this alternate
+clock frequency.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 119 ++++++++++++++++++++++++++++++-------
+ 1 file changed, 97 insertions(+), 22 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -1,6 +1,10 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+- * Sony IMX290 CMOS Image Sensor Driver
++ * Sony IMX290/327 CMOS Image Sensor Driver
++ *
++ * The IMX290 and IMX327 are very similar 1920x1080 1/2.8 CMOS image sensors.
++ * IMX327 can support up to 60fps, whilst IMX290 support up to 120fps (only
++ * 10bit and when connected over 4 CSI-2 lanes).
+  *
+  * Copyright (C) 2019 FRAMOS GmbH.
+  *
+@@ -22,6 +26,11 @@
+ #include <media/v4l2-fwnode.h>
+ #include <media/v4l2-subdev.h>
+ 
++enum imx290_clk_index {
++	CLK_37_125,
++	CLK_74_25,
++};
++
+ #define IMX290_STANDBY 0x3000
+ #define IMX290_REGHOLD 0x3001
+ #define IMX290_XMSTA 0x3002
+@@ -60,11 +69,16 @@ struct imx290_mode {
+ 
+ 	const struct imx290_regval *data;
+ 	u32 data_size;
++
++	/* Clock setup can vary. Index as enum imx290_clk_index */
++	const struct imx290_regval *clk_data[2];
++	u32 clk_size;
+ };
+ 
+ struct imx290 {
+ 	struct device *dev;
+ 	struct clk *xclk;
++	u32 xclk_freq;
+ 	struct regmap *regmap;
+ 	u8 nlanes;
+ 	u8 bpp;
+@@ -116,8 +130,6 @@ static const struct imx290_regval imx290
+ 	{ 0x3018, 0x65 },
+ 	{ 0x3019, 0x04 },
+ 	{ 0x301a, 0x00 },
+-	{ 0x3444, 0x20 },
+-	{ 0x3445, 0x25 },
+ 	{ 0x303a, 0x0c },
+ 	{ 0x3040, 0x00 },
+ 	{ 0x3041, 0x00 },
+@@ -171,6 +183,30 @@ static const struct imx290_regval imx290
+ 	{ 0x33b3, 0x04 },
+ };
+ 
++static const struct imx290_regval imx290_37_125mhz_clock_1080p[] = {
++	{ 0x305c, 0x18 },
++	{ 0x305d, 0x03 },
++	{ 0x305e, 0x20 },
++	{ 0x305f, 0x01 },
++	{ 0x315e, 0x1a },
++	{ 0x3164, 0x1a },
++	{ 0x3444, 0x20 },
++	{ 0x3445, 0x25 },
++	{ 0x3480, 0x49 },
++};
++
++static const struct imx290_regval imx290_74_250mhz_clock_1080p[] = {
++	{ 0x305c, 0x0c },
++	{ 0x305d, 0x03 },
++	{ 0x305e, 0x10 },
++	{ 0x305f, 0x01 },
++	{ 0x315e, 0x1b },
++	{ 0x3164, 0x1b },
++	{ 0x3444, 0x40 },
++	{ 0x3445, 0x4a },
++	{ 0x3480, 0x92 },
++};
++
+ static const struct imx290_regval imx290_1080p_settings[] = {
+ 	/* mode settings */
+ 	{ 0x3007, 0x00 },
+@@ -182,13 +218,6 @@ static const struct imx290_regval imx290
+ 	{ 0x3419, 0x04 },
+ 	{ 0x3012, 0x64 },
+ 	{ 0x3013, 0x00 },
+-	{ 0x305c, 0x18 },
+-	{ 0x305d, 0x03 },
+-	{ 0x305e, 0x20 },
+-	{ 0x305f, 0x01 },
+-	{ 0x315e, 0x1a },
+-	{ 0x3164, 0x1a },
+-	{ 0x3480, 0x49 },
+ 	/* data rate settings */
+ 	{ 0x3405, 0x10 },
+ 	{ 0x3446, 0x57 },
+@@ -209,6 +238,30 @@ static const struct imx290_regval imx290
+ 	{ 0x3455, 0x00 },
+ };
+ 
++static const struct imx290_regval imx290_37_125mhz_clock_720p[] = {
++	{ 0x305c, 0x20 },
++	{ 0x305d, 0x00 },
++	{ 0x305e, 0x20 },
++	{ 0x305f, 0x01 },
++	{ 0x315e, 0x1a },
++	{ 0x3164, 0x1a },
++	{ 0x3444, 0x20 },
++	{ 0x3445, 0x25 },
++	{ 0x3480, 0x49 },
++};
++
++static const struct imx290_regval imx290_74_250mhz_clock_720p[] = {
++	{ 0x305c, 0x10 },
++	{ 0x305d, 0x00 },
++	{ 0x305e, 0x10 },
++	{ 0x305f, 0x01 },
++	{ 0x315e, 0x1b },
++	{ 0x3164, 0x1b },
++	{ 0x3444, 0x40 },
++	{ 0x3445, 0x4a },
++	{ 0x3480, 0x92 },
++};
++
+ static const struct imx290_regval imx290_720p_settings[] = {
+ 	/* mode settings */
+ 	{ 0x3007, 0x10 },
+@@ -220,13 +273,6 @@ static const struct imx290_regval imx290
+ 	{ 0x3419, 0x02 },
+ 	{ 0x3012, 0x64 },
+ 	{ 0x3013, 0x00 },
+-	{ 0x305c, 0x20 },
+-	{ 0x305d, 0x00 },
+-	{ 0x305e, 0x20 },
+-	{ 0x305f, 0x01 },
+-	{ 0x315e, 0x1a },
+-	{ 0x3164, 0x1a },
+-	{ 0x3480, 0x49 },
+ 	/* data rate settings */
+ 	{ 0x3405, 0x10 },
+ 	{ 0x3446, 0x4f },
+@@ -312,6 +358,11 @@ static const struct imx290_mode imx290_m
+ 		.link_freq_index = FREQ_INDEX_1080P,
+ 		.data = imx290_1080p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
++		.clk_data = {
++			[CLK_37_125] = imx290_37_125mhz_clock_1080p,
++			[CLK_74_25] = imx290_74_250mhz_clock_1080p,
++		},
++		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_1080p),
+ 	},
+ 	{
+ 		.width = 1280,
+@@ -320,6 +371,11 @@ static const struct imx290_mode imx290_m
+ 		.link_freq_index = FREQ_INDEX_720P,
+ 		.data = imx290_720p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_720p_settings),
++		.clk_data = {
++			[CLK_37_125] = imx290_37_125mhz_clock_1080p,
++			[CLK_74_25] = imx290_74_250mhz_clock_1080p,
++		},
++		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_1080p),
+ 	},
+ };
+ 
+@@ -331,6 +387,11 @@ static const struct imx290_mode imx290_m
+ 		.link_freq_index = FREQ_INDEX_1080P,
+ 		.data = imx290_1080p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
++		.clk_data = {
++			[CLK_37_125] = imx290_37_125mhz_clock_720p,
++			[CLK_74_25] = imx290_74_250mhz_clock_720p,
++		},
++		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_720p),
+ 	},
+ 	{
+ 		.width = 1280,
+@@ -339,6 +400,11 @@ static const struct imx290_mode imx290_m
+ 		.link_freq_index = FREQ_INDEX_720P,
+ 		.data = imx290_720p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_720p_settings),
++		.clk_data = {
++			[CLK_37_125] = imx290_37_125mhz_clock_720p,
++			[CLK_74_25] = imx290_74_250mhz_clock_720p,
++		},
++		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_720p),
+ 	},
+ };
+ 
+@@ -712,6 +778,8 @@ static int imx290_set_hmax(struct imx290
+ /* Start streaming */
+ static int imx290_start_streaming(struct imx290 *imx290)
+ {
++	enum imx290_clk_index clk_idx = imx290->xclk_freq == 37125000 ?
++					CLK_37_125 : CLK_74_25;
+ 	int ret;
+ 
+ 	/* Set init register settings */
+@@ -723,6 +791,14 @@ static int imx290_start_streaming(struct
+ 		return ret;
+ 	}
+ 
++	ret = imx290_set_register_array(imx290,
++					imx290->current_mode->clk_data[clk_idx],
++					imx290->current_mode->clk_size);
++	if (ret < 0) {
++		dev_err(imx290->dev, "Could not set clock registers\n");
++		return ret;
++	}
++
+ 	/* Apply the register values related to current frame format */
+ 	ret = imx290_write_current_format(imx290);
+ 	if (ret < 0) {
+@@ -935,7 +1011,6 @@ static int imx290_probe(struct i2c_clien
+ 		.bus_type = V4L2_MBUS_CSI2_DPHY
+ 	};
+ 	struct imx290 *imx290;
+-	u32 xclk_freq;
+ 	s64 fq;
+ 	int ret;
+ 
+@@ -999,21 +1074,21 @@ static int imx290_probe(struct i2c_clien
+ 	}
+ 
+ 	ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
+-				       &xclk_freq);
++				       &imx290->xclk_freq);
+ 	if (ret) {
+ 		dev_err(dev, "Could not get xclk frequency\n");
+ 		goto free_err;
+ 	}
+ 
+ 	/* external clock must be 37.125 MHz */
+-	if (xclk_freq != 37125000) {
++	if (imx290->xclk_freq != 37125000 && imx290->xclk_freq != 74250000) {
+ 		dev_err(dev, "External clock frequency %u is not supported\n",
+-			xclk_freq);
++			imx290->xclk_freq);
+ 		ret = -EINVAL;
+ 		goto free_err;
+ 	}
+ 
+-	ret = clk_set_rate(imx290->xclk, xclk_freq);
++	ret = clk_set_rate(imx290->xclk, imx290->xclk_freq);
+ 	if (ret) {
+ 		dev_err(dev, "Could not set xclk frequency\n");
+ 		goto free_err;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0251-media-i2c-imx290-Correct-range-for-V4L2_CID_GAIN-to-.patch b/target/linux/bcm27xx/patches-5.15/950-0251-media-i2c-imx290-Correct-range-for-V4L2_CID_GAIN-to-.patch
new file mode 100644
index 0000000000..975194339a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0251-media-i2c-imx290-Correct-range-for-V4L2_CID_GAIN-to-.patch
@@ -0,0 +1,26 @@
+From fd92c9d240a36459944a971ef3bd7fec0ebf1400 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 11 Jun 2020 13:41:43 +0100
+Subject: [PATCH] media: i2c: imx290: Correct range for V4L2_CID_GAIN
+ to 0-238
+
+The datasheet lists the gain as being 0.0 to 72.0dB in 0.3dB steps, which
+makes 238 steps total.
+Correct the 0-72 range defined in the driver.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -1120,7 +1120,7 @@ static int imx290_probe(struct i2c_clien
+ 	v4l2_ctrl_handler_init(&imx290->ctrls, 4);
+ 
+ 	v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+-			  V4L2_CID_GAIN, 0, 72, 1, 0);
++			  V4L2_CID_GAIN, 0, 238, 1, 0);
+ 
+ 	imx290->link_freq =
+ 		v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0252-media-i2c-imx290-Convert-HMAX-setting-into-V4L2_CID_.patch b/target/linux/bcm27xx/patches-5.15/950-0252-media-i2c-imx290-Convert-HMAX-setting-into-V4L2_CID_.patch
new file mode 100644
index 0000000000..6d21d183a2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0252-media-i2c-imx290-Convert-HMAX-setting-into-V4L2_CID_.patch
@@ -0,0 +1,159 @@
+From 1ef87a70e7e946447835c8cefa0bc690c29d7ac8 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 11 Jun 2020 14:36:40 +0100
+Subject: [PATCH] media: i2c: imx290: Convert HMAX setting into
+ V4L2_CID_HBLANK
+
+Userspace needs to know HBLANK if it is to work out exposure times
+and frame rates, therefore convert it to map onto V4L2_CID_HBLANK
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 66 +++++++++++++++++++++++++-------------
+ 1 file changed, 44 insertions(+), 22 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -40,6 +40,9 @@ enum imx290_clk_index {
+ #define IMX290_GAIN 0x3014
+ #define IMX290_HMAX_LOW 0x301c
+ #define IMX290_HMAX_HIGH 0x301d
++#define IMX290_HMAX_MIN_2LANE 4400 /* Min of 4400 pixels = 30fps */
++#define IMX290_HMAX_MIN_4LANE 2200 /* Min of 2200 pixels = 60fps */
++#define IMX290_HMAX_MAX 0xffff
+ #define IMX290_PGCTRL 0x308c
+ #define IMX290_PHY_LANE_NUM 0x3407
+ #define IMX290_CSI_LANE_MODE 0x3443
+@@ -82,6 +85,7 @@ struct imx290 {
+ 	struct regmap *regmap;
+ 	u8 nlanes;
+ 	u8 bpp;
++	u16 hmax_min;
+ 
+ 	struct v4l2_subdev sd;
+ 	struct media_pad pad;
+@@ -94,6 +98,7 @@ struct imx290 {
+ 	struct v4l2_ctrl_handler ctrls;
+ 	struct v4l2_ctrl *link_freq;
+ 	struct v4l2_ctrl *pixel_rate;
++	struct v4l2_ctrl *hblank;
+ 
+ 	struct mutex lock;
+ };
+@@ -518,6 +523,26 @@ static int imx290_set_gain(struct imx290
+ 	return ret;
+ }
+ 
++static int imx290_set_hmax(struct imx290 *imx290, u32 val)
++{
++	u32 hmax = val + imx290->current_mode->width;
++	int ret;
++
++	ret = imx290_write_reg(imx290, IMX290_HMAX_LOW, (hmax & 0xff));
++	if (ret) {
++		dev_err(imx290->dev, "Error setting HMAX register\n");
++		return ret;
++	}
++
++	ret = imx290_write_reg(imx290, IMX290_HMAX_HIGH, ((hmax >> 8) & 0xff));
++	if (ret) {
++		dev_err(imx290->dev, "Error setting HMAX register\n");
++		return ret;
++	}
++
++	return 0;
++}
++
+ /* Stop streaming */
+ static int imx290_stop_streaming(struct imx290 *imx290)
+ {
+@@ -546,6 +571,9 @@ static int imx290_set_ctrl(struct v4l2_c
+ 	case V4L2_CID_GAIN:
+ 		ret = imx290_set_gain(imx290, ctrl->val);
+ 		break;
++	case V4L2_CID_HBLANK:
++		ret = imx290_set_hmax(imx290, ctrl->val);
++		break;
+ 	case V4L2_CID_TEST_PATTERN:
+ 		if (ctrl->val) {
+ 			imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW, 0x00);
+@@ -702,6 +730,12 @@ static int imx290_set_fmt(struct v4l2_su
+ 		if (imx290->pixel_rate)
+ 			__v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate,
+ 						 imx290_calc_pixel_rate(imx290));
++
++		if (imx290->hblank)
++			__v4l2_ctrl_modify_range(imx290->hblank,
++						 imx290->hmax_min - mode->width,
++						 IMX290_HMAX_MAX - mode->width,
++						 1, mode->hmax - mode->width);
+ 	}
+ 
+ 	*format = fmt->format;
+@@ -756,25 +790,6 @@ static int imx290_write_current_format(s
+ 	return 0;
+ }
+ 
+-static int imx290_set_hmax(struct imx290 *imx290, u32 val)
+-{
+-	int ret;
+-
+-	ret = imx290_write_reg(imx290, IMX290_HMAX_LOW, (val & 0xff));
+-	if (ret) {
+-		dev_err(imx290->dev, "Error setting HMAX register\n");
+-		return ret;
+-	}
+-
+-	ret = imx290_write_reg(imx290, IMX290_HMAX_HIGH, ((val >> 8) & 0xff));
+-	if (ret) {
+-		dev_err(imx290->dev, "Error setting HMAX register\n");
+-		return ret;
+-	}
+-
+-	return 0;
+-}
+-
+ /* Start streaming */
+ static int imx290_start_streaming(struct imx290 *imx290)
+ {
+@@ -813,9 +828,6 @@ static int imx290_start_streaming(struct
+ 		dev_err(imx290->dev, "Could not set current mode\n");
+ 		return ret;
+ 	}
+-	ret = imx290_set_hmax(imx290, imx290->current_mode->hmax);
+-	if (ret < 0)
+-		return ret;
+ 
+ 	/* Apply customized values from user */
+ 	ret = v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler);
+@@ -1010,6 +1022,7 @@ static int imx290_probe(struct i2c_clien
+ 	struct v4l2_fwnode_endpoint ep = {
+ 		.bus_type = V4L2_MBUS_CSI2_DPHY
+ 	};
++	const struct imx290_mode *mode;
+ 	struct imx290 *imx290;
+ 	s64 fq;
+ 	int ret;
+@@ -1048,6 +1061,8 @@ static int imx290_probe(struct i2c_clien
+ 		ret = -EINVAL;
+ 		goto free_err;
+ 	}
++	imx290->hmax_min = (imx290->nlanes == 2) ? IMX290_HMAX_MIN_2LANE :
++						 IMX290_HMAX_MIN_4LANE;
+ 
+ 	dev_dbg(dev, "Using %u data lanes\n", imx290->nlanes);
+ 
+@@ -1122,6 +1137,13 @@ static int imx290_probe(struct i2c_clien
+ 	v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+ 			  V4L2_CID_GAIN, 0, 238, 1, 0);
+ 
++	mode = imx290->current_mode;
++	imx290->hblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
++					   V4L2_CID_HBLANK,
++					   imx290->hmax_min - mode->width,
++					   IMX290_HMAX_MAX - mode->width, 1,
++					   mode->hmax - mode->width);
++
+ 	imx290->link_freq =
+ 		v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
+ 				       V4L2_CID_LINK_FREQ,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0253-media-i2c-imx290-Add-support-for-V4L2_CID_VBLANK.patch b/target/linux/bcm27xx/patches-5.15/950-0253-media-i2c-imx290-Add-support-for-V4L2_CID_VBLANK.patch
new file mode 100644
index 0000000000..f54d57135f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0253-media-i2c-imx290-Add-support-for-V4L2_CID_VBLANK.patch
@@ -0,0 +1,141 @@
+From 2ec876df0a1c42bb42fff3d34fdb618d42c39e43 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 11 Jun 2020 18:09:12 +0100
+Subject: [PATCH] media: i2c: imx290: Add support for V4L2_CID_VBLANK
+
+In order to calculate framerate and durations userspace needs
+the vertical blanking information. This can be configurable,
+and indeed the datasheet lists different values for VBLANK for
+the 1080p and 720p modes.
+
+Add the new control, and adopt the datasheet values for each mode.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 38 ++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 36 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -38,6 +38,8 @@ enum imx290_clk_index {
+ #define IMX290_BLKLEVEL_LOW 0x300a
+ #define IMX290_BLKLEVEL_HIGH 0x300b
+ #define IMX290_GAIN 0x3014
++#define IMX290_VMAX_LOW 0x3018
++#define IMX290_VMAX_MAX 0x3fff
+ #define IMX290_HMAX_LOW 0x301c
+ #define IMX290_HMAX_HIGH 0x301d
+ #define IMX290_HMAX_MIN_2LANE 4400 /* Min of 4400 pixels = 30fps */
+@@ -68,6 +70,7 @@ struct imx290_mode {
+ 	u32 width;
+ 	u32 height;
+ 	u32 hmax;
++	u32 vmax;
+ 	u8 link_freq_index;
+ 
+ 	const struct imx290_regval *data;
+@@ -99,6 +102,7 @@ struct imx290 {
+ 	struct v4l2_ctrl *link_freq;
+ 	struct v4l2_ctrl *pixel_rate;
+ 	struct v4l2_ctrl *hblank;
++	struct v4l2_ctrl *vblank;
+ 
+ 	struct mutex lock;
+ };
+@@ -132,8 +136,6 @@ static const char * const imx290_test_pa
+ 
+ static const struct imx290_regval imx290_global_init_settings[] = {
+ 	{ 0x3007, 0x00 },
+-	{ 0x3018, 0x65 },
+-	{ 0x3019, 0x04 },
+ 	{ 0x301a, 0x00 },
+ 	{ 0x303a, 0x0c },
+ 	{ 0x3040, 0x00 },
+@@ -360,6 +362,7 @@ static const struct imx290_mode imx290_m
+ 		.width = 1920,
+ 		.height = 1080,
+ 		.hmax = 0x1130,
++		.vmax = 0x0465,
+ 		.link_freq_index = FREQ_INDEX_1080P,
+ 		.data = imx290_1080p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
+@@ -373,6 +376,7 @@ static const struct imx290_mode imx290_m
+ 		.width = 1280,
+ 		.height = 720,
+ 		.hmax = 0x19c8,
++		.vmax = 0x02ee,
+ 		.link_freq_index = FREQ_INDEX_720P,
+ 		.data = imx290_720p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_720p_settings),
+@@ -389,6 +393,7 @@ static const struct imx290_mode imx290_m
+ 		.width = 1920,
+ 		.height = 1080,
+ 		.hmax = 0x0898,
++		.vmax = 0x0465,
+ 		.link_freq_index = FREQ_INDEX_1080P,
+ 		.data = imx290_1080p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
+@@ -402,6 +407,7 @@ static const struct imx290_mode imx290_m
+ 		.width = 1280,
+ 		.height = 720,
+ 		.hmax = 0x0ce4,
++		.vmax = 0x02ee,
+ 		.link_freq_index = FREQ_INDEX_720P,
+ 		.data = imx290_720p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_720p_settings),
+@@ -543,6 +549,19 @@ static int imx290_set_hmax(struct imx290
+ 	return 0;
+ }
+ 
++static int imx290_set_vmax(struct imx290 *imx290, u32 val)
++{
++	u32 vmax = val + imx290->current_mode->height;
++	int ret;
++
++	ret = imx290_write_buffered_reg(imx290, IMX290_VMAX_LOW, 3,
++					vmax);
++	if (ret)
++		dev_err(imx290->dev, "Unable to write vmax\n");
++
++	return ret;
++}
++
+ /* Stop streaming */
+ static int imx290_stop_streaming(struct imx290 *imx290)
+ {
+@@ -574,6 +593,9 @@ static int imx290_set_ctrl(struct v4l2_c
+ 	case V4L2_CID_HBLANK:
+ 		ret = imx290_set_hmax(imx290, ctrl->val);
+ 		break;
++	case V4L2_CID_VBLANK:
++		ret = imx290_set_vmax(imx290, ctrl->val);
++		break;
+ 	case V4L2_CID_TEST_PATTERN:
+ 		if (ctrl->val) {
+ 			imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW, 0x00);
+@@ -736,6 +758,12 @@ static int imx290_set_fmt(struct v4l2_su
+ 						 imx290->hmax_min - mode->width,
+ 						 IMX290_HMAX_MAX - mode->width,
+ 						 1, mode->hmax - mode->width);
++		if (imx290->vblank)
++			__v4l2_ctrl_modify_range(imx290->vblank,
++						 mode->vmax - mode->height,
++						 IMX290_VMAX_MAX - mode->height,
++						 1,
++						 mode->vmax - mode->height);
+ 	}
+ 
+ 	*format = fmt->format;
+@@ -1144,6 +1172,12 @@ static int imx290_probe(struct i2c_clien
+ 					   IMX290_HMAX_MAX - mode->width, 1,
+ 					   mode->hmax - mode->width);
+ 
++	imx290->vblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
++					   V4L2_CID_VBLANK,
++					   mode->vmax - mode->height,
++					   IMX290_VMAX_MAX - mode->height, 1,
++					   mode->vmax - mode->height);
++
+ 	imx290->link_freq =
+ 		v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
+ 				       V4L2_CID_LINK_FREQ,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0254-media-i2c-imx290-Add-exposure-control-to-the-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0254-media-i2c-imx290-Add-exposure-control-to-the-driver.patch
new file mode 100644
index 0000000000..5c6185774e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0254-media-i2c-imx290-Add-exposure-control-to-the-driver.patch
@@ -0,0 +1,93 @@
+From e14032e74f63afc123d631d4475b057221b2de60 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 11 Jun 2020 18:19:13 +0100
+Subject: [PATCH] media: i2c: imx290: Add exposure control to the
+ driver.
+
+Adds support for V4L2_CID_EXPOSURE so that userspace can control
+the sensor exposure time.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 35 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 35 insertions(+)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -45,6 +45,10 @@ enum imx290_clk_index {
+ #define IMX290_HMAX_MIN_2LANE 4400 /* Min of 4400 pixels = 30fps */
+ #define IMX290_HMAX_MIN_4LANE 2200 /* Min of 2200 pixels = 60fps */
+ #define IMX290_HMAX_MAX 0xffff
++
++#define IMX290_EXPOSURE_MIN 2
++#define IMX290_EXPOSURE_STEP 1
++#define IMX290_EXPOSURE_LOW 0x3020
+ #define IMX290_PGCTRL 0x308c
+ #define IMX290_PHY_LANE_NUM 0x3407
+ #define IMX290_CSI_LANE_MODE 0x3443
+@@ -103,6 +107,7 @@ struct imx290 {
+ 	struct v4l2_ctrl *pixel_rate;
+ 	struct v4l2_ctrl *hblank;
+ 	struct v4l2_ctrl *vblank;
++	struct v4l2_ctrl *exposure;
+ 
+ 	struct mutex lock;
+ };
+@@ -529,6 +534,20 @@ static int imx290_set_gain(struct imx290
+ 	return ret;
+ }
+ 
++static int imx290_set_exposure(struct imx290 *imx290, u32 value)
++{
++	u32 exposure = (imx290->current_mode->height + imx290->vblank->val) -
++						value;
++	int ret;
++
++	ret = imx290_write_buffered_reg(imx290, IMX290_EXPOSURE_LOW, 3,
++					exposure);
++	if (ret)
++		dev_err(imx290->dev, "Unable to write exposure\n");
++
++	return ret;
++}
++
+ static int imx290_set_hmax(struct imx290 *imx290, u32 val)
+ {
+ 	u32 hmax = val + imx290->current_mode->width;
+@@ -590,6 +609,9 @@ static int imx290_set_ctrl(struct v4l2_c
+ 	case V4L2_CID_GAIN:
+ 		ret = imx290_set_gain(imx290, ctrl->val);
+ 		break;
++	case V4L2_CID_EXPOSURE:
++		ret = imx290_set_exposure(imx290, ctrl->val);
++		break;
+ 	case V4L2_CID_HBLANK:
+ 		ret = imx290_set_hmax(imx290, ctrl->val);
+ 		break;
+@@ -764,6 +786,12 @@ static int imx290_set_fmt(struct v4l2_su
+ 						 IMX290_VMAX_MAX - mode->height,
+ 						 1,
+ 						 mode->vmax - mode->height);
++		if (imx290->exposure)
++			__v4l2_ctrl_modify_range(imx290->exposure,
++						 mode->vmax - mode->height,
++						 mode->vmax - 4,
++						 IMX290_EXPOSURE_STEP,
++						 mode->vmax - 4);
+ 	}
+ 
+ 	*format = fmt->format;
+@@ -1178,6 +1206,13 @@ static int imx290_probe(struct i2c_clien
+ 					   IMX290_VMAX_MAX - mode->height, 1,
+ 					   mode->vmax - mode->height);
+ 
++	imx290->exposure = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
++					     V4L2_CID_EXPOSURE,
++					     IMX290_EXPOSURE_MIN,
++					     mode->vmax - 4,
++					     IMX290_EXPOSURE_STEP,
++					     mode->vmax - 4);
++
+ 	imx290->link_freq =
+ 		v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
+ 				       V4L2_CID_LINK_FREQ,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0255-media-i2c-imx290-Add-H-and-V-flip-controls.patch b/target/linux/bcm27xx/patches-5.15/950-0255-media-i2c-imx290-Add-H-and-V-flip-controls.patch
new file mode 100644
index 0000000000..01bce3ce15
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0255-media-i2c-imx290-Add-H-and-V-flip-controls.patch
@@ -0,0 +1,83 @@
+From e6e2b986f038f049fc02e224ad54e939318b909e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 11 Jun 2020 18:34:16 +0100
+Subject: [PATCH] media: i2c: imx290: Add H and V flip controls
+
+The sensor supports horizontal and vertical flips, so support them
+through V4L2_CID_HFLIP and V4L2_CID_VFLIP.
+
+This sensor does NOT change the Bayer order when changing the
+direction of readout, therefore no special handling is required for
+that.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 22 ++++++++++++++++++++++
+ 1 file changed, 22 insertions(+)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -34,6 +34,7 @@ enum imx290_clk_index {
+ #define IMX290_STANDBY 0x3000
+ #define IMX290_REGHOLD 0x3001
+ #define IMX290_XMSTA 0x3002
++#define IMX290_FLIP_WINMODE 0x3007
+ #define IMX290_FR_FDG_SEL 0x3009
+ #define IMX290_BLKLEVEL_LOW 0x300a
+ #define IMX290_BLKLEVEL_HIGH 0x300b
+@@ -107,6 +108,8 @@ struct imx290 {
+ 	struct v4l2_ctrl *pixel_rate;
+ 	struct v4l2_ctrl *hblank;
+ 	struct v4l2_ctrl *vblank;
++	struct v4l2_ctrl *hflip;
++	struct v4l2_ctrl *vflip;
+ 	struct v4l2_ctrl *exposure;
+ 
+ 	struct mutex lock;
+@@ -600,6 +603,7 @@ static int imx290_set_ctrl(struct v4l2_c
+ 	struct imx290 *imx290 = container_of(ctrl->handler,
+ 					     struct imx290, ctrls);
+ 	int ret = 0;
++	u8 val;
+ 
+ 	/* V4L2 controls values will be applied only when power is already up */
+ 	if (!pm_runtime_get_if_in_use(imx290->dev))
+@@ -618,6 +622,16 @@ static int imx290_set_ctrl(struct v4l2_c
+ 	case V4L2_CID_VBLANK:
+ 		ret = imx290_set_vmax(imx290, ctrl->val);
+ 		break;
++	case V4L2_CID_HFLIP:
++	case V4L2_CID_VFLIP:
++		/* WINMODE is in bits [6:4], so need to read-modify-write */
++		ret = imx290_read_reg(imx290, IMX290_FLIP_WINMODE, &val);
++		if (ret)
++			break;
++		val &= ~0x03;
++		val |= imx290->vflip->val | (imx290->hflip->val << 1);
++		ret = imx290_write_reg(imx290, IMX290_FLIP_WINMODE, val);
++		break;
+ 	case V4L2_CID_TEST_PATTERN:
+ 		if (ctrl->val) {
+ 			imx290_write_reg(imx290, IMX290_BLKLEVEL_LOW, 0x00);
+@@ -922,6 +936,9 @@ static int imx290_set_stream(struct v4l2
+ 		imx290_stop_streaming(imx290);
+ 		pm_runtime_put(imx290->dev);
+ 	}
++	/* vflip and hflip cannot change during streaming */
++	__v4l2_ctrl_grab(imx290->vflip, enable);
++	__v4l2_ctrl_grab(imx290->hflip, enable);
+ 
+ unlock_and_return:
+ 
+@@ -1213,6 +1230,11 @@ static int imx290_probe(struct i2c_clien
+ 					     IMX290_EXPOSURE_STEP,
+ 					     mode->vmax - 4);
+ 
++	imx290->hflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
++					  V4L2_CID_HFLIP, 0, 1, 1, 0);
++	imx290->vflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
++					  V4L2_CID_VFLIP, 0, 1, 1, 0);
++
+ 	imx290->link_freq =
+ 		v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
+ 				       V4L2_CID_LINK_FREQ,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0256-media-dt-bindings-media-i2c-Add-mono-version-to-IMX2.patch b/target/linux/bcm27xx/patches-5.15/950-0256-media-dt-bindings-media-i2c-Add-mono-version-to-IMX2.patch
new file mode 100644
index 0000000000..7d446901c8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0256-media-dt-bindings-media-i2c-Add-mono-version-to-IMX2.patch
@@ -0,0 +1,36 @@
+From 5257f480d8ca030b13bbc30b2b5c1dd58cfbbbf5 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Jun 2020 16:52:14 +0100
+Subject: [PATCH] media: dt-bindings: media: i2c: Add mono version to
+ IMX290 bindings
+
+The IMX290 module is available as either monochrome or colour and
+the variant is not detectable at runtime.
+
+Add a new compatible string for the monochrome version.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ Documentation/devicetree/bindings/media/i2c/imx290.txt | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+--- a/Documentation/devicetree/bindings/media/i2c/imx290.txt
++++ b/Documentation/devicetree/bindings/media/i2c/imx290.txt
+@@ -1,13 +1,14 @@
+ * Sony IMX290 1/2.8-Inch CMOS Image Sensor
+ 
+ The Sony IMX290 is a 1/2.8-Inch CMOS Solid-state image sensor with
+-Square Pixel for Color Cameras. It is programmable through I2C and 4-wire
+-interfaces. The sensor output is available via CMOS logic parallel SDR output,
++Square Pixel for Color or Monochrome Cameras. It is programmable through I2C
++and 4-wire interfaces.
++The sensor output is available via CMOS logic parallel SDR output,
+ Low voltage LVDS DDR output and CSI-2 serial data output. The CSI-2 bus is the
+ default. No bindings have been defined for the other busses.
+ 
+ Required Properties:
+-- compatible: Should be "sony,imx290"
++- compatible: Should be "sony,imx290", or "sony,imx290-mono"
+ - reg: I2C bus address of the device
+ - clocks: Reference to the xclk clock.
+ - clock-names: Should be "xclk".
diff --git a/target/linux/bcm27xx/patches-5.15/950-0257-media-i2c-imx290-Add-support-for-the-mono-sensor-var.patch b/target/linux/bcm27xx/patches-5.15/950-0257-media-i2c-imx290-Add-support-for-the-mono-sensor-var.patch
new file mode 100644
index 0000000000..ce0ac0d693
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0257-media-i2c-imx290-Add-support-for-the-mono-sensor-var.patch
@@ -0,0 +1,185 @@
+From 1cec09c2c2f4c65350d29a0c597da6c7df5ef3bc Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Jun 2020 17:03:11 +0100
+Subject: [PATCH] media : i2c: imx290: Add support for the mono sensor
+ variant.
+
+The IMX290 module is available as either mono or colour (Bayer).
+
+Update the driver so that it can advertise the correct mono
+formats instead of the colour ones.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 58 +++++++++++++++++++++++++++-----------
+ 1 file changed, 41 insertions(+), 17 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -1,10 +1,12 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+- * Sony IMX290/327 CMOS Image Sensor Driver
++ * Sony IMX290 & IMX327 CMOS Image Sensor Driver
+  *
+  * The IMX290 and IMX327 are very similar 1920x1080 1/2.8 CMOS image sensors.
+- * IMX327 can support up to 60fps, whilst IMX290 support up to 120fps (only
+- * 10bit and when connected over 4 CSI-2 lanes).
++ * IMX327 can support up to 60fps, whilst IMX290 can support up to 120fps, but
++ * only 10bit and when connected over 4 CSI-2 lanes.
++ * The modules don't appear to have a mechanism to identify whether the mono or
++ * colour variant is connected, therefore it is done via compatible string.
+  *
+  * Copyright (C) 2019 FRAMOS GmbH.
+  *
+@@ -17,6 +19,7 @@
+ #include <linux/gpio/consumer.h>
+ #include <linux/i2c.h>
+ #include <linux/module.h>
++#include <linux/of_device.h>
+ #include <linux/pm_runtime.h>
+ #include <linux/regmap.h>
+ #include <linux/regulator/consumer.h>
+@@ -95,6 +98,8 @@ struct imx290 {
+ 	u8 bpp;
+ 	u16 hmax_min;
+ 
++	const struct imx290_pixfmt *formats;
++
+ 	struct v4l2_subdev sd;
+ 	struct media_pad pad;
+ 	struct v4l2_mbus_framefmt current_format;
+@@ -120,11 +125,18 @@ struct imx290_pixfmt {
+ 	u8 bpp;
+ };
+ 
+-static const struct imx290_pixfmt imx290_formats[] = {
++#define IMX290_NUM_FORMATS 2
++
++static const struct imx290_pixfmt imx290_colour_formats[IMX290_NUM_FORMATS] = {
+ 	{ MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
+ 	{ MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
+ };
+ 
++static const struct imx290_pixfmt imx290_mono_formats[IMX290_NUM_FORMATS] = {
++	{ MEDIA_BUS_FMT_Y10_1X10, 10 },
++	{ MEDIA_BUS_FMT_Y12_1X12, 12 },
++};
++
+ static const struct regmap_config imx290_regmap_config = {
+ 	.reg_bits = 16,
+ 	.val_bits = 8,
+@@ -671,10 +683,12 @@ static int imx290_enum_mbus_code(struct
+ 				 struct v4l2_subdev_state *sd_state,
+ 				 struct v4l2_subdev_mbus_code_enum *code)
+ {
+-	if (code->index >= ARRAY_SIZE(imx290_formats))
++	const struct imx290 *imx290 = to_imx290(sd);
++
++	if (code->index >= IMX290_NUM_FORMATS)
+ 		return -EINVAL;
+ 
+-	code->code = imx290_formats[code->index].code;
++	code->code = imx290->formats[code->index].code;
+ 
+ 	return 0;
+ }
+@@ -686,8 +700,8 @@ static int imx290_enum_frame_size(struct
+ 	const struct imx290 *imx290 = to_imx290(sd);
+ 	const struct imx290_mode *imx290_modes = imx290_modes_ptr(imx290);
+ 
+-	if ((fse->code != imx290_formats[0].code) &&
+-	    (fse->code != imx290_formats[1].code))
++	if (fse->code != imx290->formats[0].code &&
++	    fse->code != imx290->formats[1].code)
+ 		return -EINVAL;
+ 
+ 	if (fse->index >= imx290_modes_num(imx290))
+@@ -765,14 +779,14 @@ static int imx290_set_fmt(struct v4l2_su
+ 	fmt->format.width = mode->width;
+ 	fmt->format.height = mode->height;
+ 
+-	for (i = 0; i < ARRAY_SIZE(imx290_formats); i++)
+-		if (imx290_formats[i].code == fmt->format.code)
++	for (i = 0; i < IMX290_NUM_FORMATS; i++)
++		if (imx290->formats[i].code == fmt->format.code)
+ 			break;
+ 
+-	if (i >= ARRAY_SIZE(imx290_formats))
++	if (i >= IMX290_NUM_FORMATS)
+ 		i = 0;
+ 
+-	fmt->format.code = imx290_formats[i].code;
++	fmt->format.code = imx290->formats[i].code;
+ 	fmt->format.field = V4L2_FIELD_NONE;
+ 
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+@@ -780,7 +794,7 @@ static int imx290_set_fmt(struct v4l2_su
+ 	} else {
+ 		format = &imx290->current_format;
+ 		imx290->current_mode = mode;
+-		imx290->bpp = imx290_formats[i].bpp;
++		imx290->bpp = imx290->formats[i].bpp;
+ 
+ 		if (imx290->link_freq)
+ 			__v4l2_ctrl_s_ctrl(imx290->link_freq,
+@@ -835,6 +849,7 @@ static int imx290_write_current_format(s
+ 
+ 	switch (imx290->current_format.code) {
+ 	case MEDIA_BUS_FMT_SRGGB10_1X10:
++	case MEDIA_BUS_FMT_Y10_1X10:
+ 		ret = imx290_set_register_array(imx290, imx290_10bit_settings,
+ 						ARRAY_SIZE(
+ 							imx290_10bit_settings));
+@@ -844,6 +859,7 @@ static int imx290_write_current_format(s
+ 		}
+ 		break;
+ 	case MEDIA_BUS_FMT_SRGGB12_1X12:
++	case MEDIA_BUS_FMT_Y12_1X12:
+ 		ret = imx290_set_register_array(imx290, imx290_12bit_settings,
+ 						ARRAY_SIZE(
+ 							imx290_12bit_settings));
+@@ -1087,6 +1103,12 @@ static s64 imx290_check_link_freqs(const
+ 	return 0;
+ }
+ 
++static const struct of_device_id imx290_of_match[] = {
++	{ .compatible = "sony,imx290", .data = imx290_colour_formats },
++	{ .compatible = "sony,imx290-mono", .data = imx290_mono_formats },
++	{ /* sentinel */ }
++};
++
+ static int imx290_probe(struct i2c_client *client)
+ {
+ 	struct device *dev = &client->dev;
+@@ -1095,6 +1117,7 @@ static int imx290_probe(struct i2c_clien
+ 	struct v4l2_fwnode_endpoint ep = {
+ 		.bus_type = V4L2_MBUS_CSI2_DPHY
+ 	};
++	const struct of_device_id *match;
+ 	const struct imx290_mode *mode;
+ 	struct imx290 *imx290;
+ 	s64 fq;
+@@ -1111,6 +1134,11 @@ static int imx290_probe(struct i2c_clien
+ 		return -ENODEV;
+ 	}
+ 
++	match = of_match_device(imx290_of_match, dev);
++	if (!match)
++		return -ENODEV;
++	imx290->formats = (const struct imx290_pixfmt *)match->data;
++
+ 	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+ 	if (!endpoint) {
+ 		dev_err(dev, "Endpoint node not found\n");
+@@ -1329,10 +1357,6 @@ static int imx290_remove(struct i2c_clie
+ 	return 0;
+ }
+ 
+-static const struct of_device_id imx290_of_match[] = {
+-	{ .compatible = "sony,imx290" },
+-	{ /* sentinel */ }
+-};
+ MODULE_DEVICE_TABLE(of, imx290_of_match);
+ 
+ static struct i2c_driver imx290_i2c_driver = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0258-media-i2c-imx290-Switch-set_hmax-to-use-imx290_write.patch b/target/linux/bcm27xx/patches-5.15/950-0258-media-i2c-imx290-Switch-set_hmax-to-use-imx290_write.patch
new file mode 100644
index 0000000000..86fcea6900
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0258-media-i2c-imx290-Switch-set_hmax-to-use-imx290_write.patch
@@ -0,0 +1,43 @@
+From 3707b7f288db239633547399276beb3bb03830d6 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 26 Jun 2020 18:11:49 +0100
+Subject: [PATCH] media: i2c: imx290: Switch set_hmax to use
+ imx290_write_buffered_reg
+
+imx290_set_hmax was using two independent writes to set up hmax,
+when all other multi-register writes were using imx290_write_buffered_reg
+which claims the group hold first.
+
+Switch imx290_set_hmax to using imx290_write_buffered_reg too.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 15 ++++-----------
+ 1 file changed, 4 insertions(+), 11 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -568,19 +568,12 @@ static int imx290_set_hmax(struct imx290
+ 	u32 hmax = val + imx290->current_mode->width;
+ 	int ret;
+ 
+-	ret = imx290_write_reg(imx290, IMX290_HMAX_LOW, (hmax & 0xff));
+-	if (ret) {
++	ret = imx290_write_buffered_reg(imx290, IMX290_HMAX_LOW, 2,
++					hmax);
++	if (ret)
+ 		dev_err(imx290->dev, "Error setting HMAX register\n");
+-		return ret;
+-	}
+ 
+-	ret = imx290_write_reg(imx290, IMX290_HMAX_HIGH, ((hmax >> 8) & 0xff));
+-	if (ret) {
+-		dev_err(imx290->dev, "Error setting HMAX register\n");
+-		return ret;
+-	}
+-
+-	return 0;
++	return ret;
+ }
+ 
+ static int imx290_set_vmax(struct imx290 *imx290, u32 val)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0259-serial-8250-bcm2835aux-defer-if-clock-is-zero.patch b/target/linux/bcm27xx/patches-5.15/950-0259-serial-8250-bcm2835aux-defer-if-clock-is-zero.patch
new file mode 100644
index 0000000000..753b831b21
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0259-serial-8250-bcm2835aux-defer-if-clock-is-zero.patch
@@ -0,0 +1,28 @@
+From fa17971225e9c924238edf8657dc21a8687a0232 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 2 Jul 2020 13:53:20 +0100
+Subject: [PATCH] serial: 8250: bcm2835aux - defer if clock is zero
+
+See: https://github.com/raspberrypi/linux/issues/3700
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/tty/serial/8250/8250_bcm2835aux.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/drivers/tty/serial/8250/8250_bcm2835aux.c
++++ b/drivers/tty/serial/8250/8250_bcm2835aux.c
+@@ -148,6 +148,13 @@ static int bcm2835aux_serial_probe(struc
+ 	 */
+ 	up.port.uartclk = clk_get_rate(data->clk) * 2;
+ 
++	/* The clock is only queried at probe time, which means we get one shot
++	 * at this. A zero clock is never going to work and is almost certainly
++	 * due to a parent not being ready, so prefer to defer.
++	 */
++	if (!up.port.uartclk)
++	    return -EPROBE_DEFER;
++
+ 	/* register the port */
+ 	ret = serial8250_register_8250_port(&up);
+ 	if (ret < 0) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0260-media-Add-a-pixel-format-for-MIPI-packed-12bit-luma-.patch b/target/linux/bcm27xx/patches-5.15/950-0260-media-Add-a-pixel-format-for-MIPI-packed-12bit-luma-.patch
new file mode 100644
index 0000000000..5aea1d7b3a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0260-media-Add-a-pixel-format-for-MIPI-packed-12bit-luma-.patch
@@ -0,0 +1,95 @@
+From 30821c8c3d67b8450e9771bb864f737f6e68bd4c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 7 May 2020 16:59:03 +0100
+Subject: [PATCH] media: Add a pixel format for MIPI packed 12bit luma
+ only.
+
+This is the format used by monochrome 12bit image sensors.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../userspace-api/media/v4l/pixfmt-y12p.rst   | 45 +++++++++++++++++++
+ .../userspace-api/media/v4l/yuv-formats.rst   |  1 +
+ drivers/media/v4l2-core/v4l2-ioctl.c          |  1 +
+ include/uapi/linux/videodev2.h                |  1 +
+ 4 files changed, 48 insertions(+)
+ create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y12p.rst
+
+--- /dev/null
++++ b/Documentation/userspace-api/media/v4l/pixfmt-y12p.rst
+@@ -0,0 +1,45 @@
++.. Permission is granted to copy, distribute and/or modify this
++.. document under the terms of the GNU Free Documentation License,
++.. Version 1.1 or any later version published by the Free Software
++.. Foundation, with no Invariant Sections, no Front-Cover Texts
++.. and no Back-Cover Texts. A copy of the license is included at
++.. Documentation/media/uapi/fdl-appendix.rst.
++..
++.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
++
++.. _V4L2-PIX-FMT-Y12P:
++
++******************************
++V4L2_PIX_FMT_Y12P ('Y12P')
++******************************
++
++Grey-scale image as a MIPI RAW12 packed array
++
++
++Description
++===========
++
++This is a packed grey-scale image format with a depth of 12 bits per
++pixel. Two consecutive pixels are packed into 3 bytes. The first 2 bytes
++contain the 8 high order bits of the pixels, and the 3rd byte contains the 4
++least significants bits of each pixel, in the same order.
++
++**Byte Order.**
++Each cell is one byte.
++
++.. tabularcolumns:: |p{2.2cm}|p{1.2cm}|p{1.2cm}|p{3.1cm}|
++
++
++.. flat-table::
++    :header-rows:  0
++    :stub-columns: 0
++    :widths:       2 1 1 1
++
++
++    -  -  start + 0:
++       -  Y'\ :sub:`00high`
++       -  Y'\ :sub:`01high`
++       -  Y'\ :sub:`01low`\ (bits 7--4)
++
++          Y'\ :sub:`00low`\ (bits 3--0)
++
+--- a/Documentation/userspace-api/media/v4l/yuv-formats.rst
++++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst
+@@ -267,6 +267,7 @@ image.
+     pixfmt-packed-yuv
+     pixfmt-yuv-planar
+     pixfmt-yuv-luma
++    pixfmt-y12p
+     pixfmt-y8i
+     pixfmt-y12i
+     pixfmt-uv8
+--- a/drivers/media/v4l2-core/v4l2-ioctl.c
++++ b/drivers/media/v4l2-core/v4l2-ioctl.c
+@@ -1265,6 +1265,7 @@ static void v4l_fill_fmtdesc(struct v4l2
+ 	case V4L2_PIX_FMT_Y16_BE:	descr = "16-bit Greyscale BE"; break;
+ 	case V4L2_PIX_FMT_Y10BPACK:	descr = "10-bit Greyscale (Packed)"; break;
+ 	case V4L2_PIX_FMT_Y10P:		descr = "10-bit Greyscale (MIPI Packed)"; break;
++	case V4L2_PIX_FMT_Y12P:		descr = "12-bit Greyscale (MIPI Packed)"; break;
+ 	case V4L2_PIX_FMT_Y8I:		descr = "Interleaved 8-bit Greyscale"; break;
+ 	case V4L2_PIX_FMT_Y12I:		descr = "Interleaved 12-bit Greyscale"; break;
+ 	case V4L2_PIX_FMT_Z16:		descr = "16-bit Depth"; break;
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -574,6 +574,7 @@ struct v4l2_pix_format {
+ /* Grey bit-packed formats */
+ #define V4L2_PIX_FMT_Y10BPACK    v4l2_fourcc('Y', '1', '0', 'B') /* 10  Greyscale bit-packed */
+ #define V4L2_PIX_FMT_Y10P    v4l2_fourcc('Y', '1', '0', 'P') /* 10  Greyscale, MIPI RAW10 packed */
++#define V4L2_PIX_FMT_Y12P    v4l2_fourcc('Y', '1', '2', 'P') /* 12  Greyscale, MIPI RAW12 packed */
+ 
+ /* Palette formats */
+ #define V4L2_PIX_FMT_PAL8    v4l2_fourcc('P', 'A', 'L', '8') /*  8  8-bit palette */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0261-media-Add-a-pixel-format-for-MIPI-packed-14bit-luma-.patch b/target/linux/bcm27xx/patches-5.15/950-0261-media-Add-a-pixel-format-for-MIPI-packed-14bit-luma-.patch
new file mode 100644
index 0000000000..394133ed34
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0261-media-Add-a-pixel-format-for-MIPI-packed-14bit-luma-.patch
@@ -0,0 +1,104 @@
+From 50983907b91a78a38c6dd87bfb8262ba50566bda Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Jun 2020 17:51:03 +0100
+Subject: [PATCH] media: Add a pixel format for MIPI packed 14bit luma
+ only.
+
+This is the format used by monochrome 14bit image sensors.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../userspace-api/media/v4l/pixfmt-y14p.rst   | 54 +++++++++++++++++++
+ .../userspace-api/media/v4l/yuv-formats.rst   |  1 +
+ drivers/media/v4l2-core/v4l2-ioctl.c          |  1 +
+ include/uapi/linux/videodev2.h                |  1 +
+ 4 files changed, 57 insertions(+)
+ create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-y14p.rst
+
+--- /dev/null
++++ b/Documentation/userspace-api/media/v4l/pixfmt-y14p.rst
+@@ -0,0 +1,54 @@
++.. Permission is granted to copy, distribute and/or modify this
++.. document under the terms of the GNU Free Documentation License,
++.. Version 1.1 or any later version published by the Free Software
++.. Foundation, with no Invariant Sections, no Front-Cover Texts
++.. and no Back-Cover Texts. A copy of the license is included at
++.. Documentation/media/uapi/fdl-appendix.rst.
++..
++.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
++
++.. _V4L2-PIX-FMT-Y14P:
++
++**************************
++V4L2_PIX_FMT_Y14P ('Y14P')
++**************************
++
++Grey-scale image as a MIPI RAW14 packed array
++
++
++Description
++===========
++
++This is a packed grey-scale image format with a depth of 14 bits per
++pixel. Every four consecutive samples are packed into seven bytes. Each
++of the first four bytes contain the eight high order bits of the pixels,
++and the three following bytes contains the six least significants bits of
++each pixel, in the same order.
++
++**Byte Order.**
++Each cell is one byte.
++
++.. tabularcolumns:: |p{1.8cm}|p{1.0cm}|p{1.0cm}|p{1.0cm}|p{1.1cm}|p{3.3cm}|p{3.3cm}|p{3.3cm}|
++
++.. flat-table::
++    :header-rows:  0
++    :stub-columns: 0
++    :widths:       2 1 1 1 1 3 3 3
++
++
++    -  -  start + 0:
++       -  Y'\ :sub:`00high`
++       -  Y'\ :sub:`01high`
++       -  Y'\ :sub:`02high`
++       -  Y'\ :sub:`03high`
++       -  Y'\ :sub:`01low bits 1--0`\ (bits 7--6)
++
++	  Y'\ :sub:`00low bits 5--0`\ (bits 5--0)
++
++       -  Y'\ :sub:`02low bits 3--0`\ (bits 7--4)
++
++	  Y'\ :sub:`01low bits 5--2`\ (bits 3--0)
++
++       -  Y'\ :sub:`03low bits 5--0`\ (bits 7--2)
++
++	  Y'\ :sub:`02low bits 5--4`\ (bits 1--0)
+--- a/Documentation/userspace-api/media/v4l/yuv-formats.rst
++++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst
+@@ -268,6 +268,7 @@ image.
+     pixfmt-yuv-planar
+     pixfmt-yuv-luma
+     pixfmt-y12p
++    pixfmt-y14p
+     pixfmt-y8i
+     pixfmt-y12i
+     pixfmt-uv8
+--- a/drivers/media/v4l2-core/v4l2-ioctl.c
++++ b/drivers/media/v4l2-core/v4l2-ioctl.c
+@@ -1266,6 +1266,7 @@ static void v4l_fill_fmtdesc(struct v4l2
+ 	case V4L2_PIX_FMT_Y10BPACK:	descr = "10-bit Greyscale (Packed)"; break;
+ 	case V4L2_PIX_FMT_Y10P:		descr = "10-bit Greyscale (MIPI Packed)"; break;
+ 	case V4L2_PIX_FMT_Y12P:		descr = "12-bit Greyscale (MIPI Packed)"; break;
++	case V4L2_PIX_FMT_Y14P:		descr = "14-bit Greyscale (MIPI Packed)"; break;
+ 	case V4L2_PIX_FMT_Y8I:		descr = "Interleaved 8-bit Greyscale"; break;
+ 	case V4L2_PIX_FMT_Y12I:		descr = "Interleaved 12-bit Greyscale"; break;
+ 	case V4L2_PIX_FMT_Z16:		descr = "16-bit Depth"; break;
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -575,6 +575,7 @@ struct v4l2_pix_format {
+ #define V4L2_PIX_FMT_Y10BPACK    v4l2_fourcc('Y', '1', '0', 'B') /* 10  Greyscale bit-packed */
+ #define V4L2_PIX_FMT_Y10P    v4l2_fourcc('Y', '1', '0', 'P') /* 10  Greyscale, MIPI RAW10 packed */
+ #define V4L2_PIX_FMT_Y12P    v4l2_fourcc('Y', '1', '2', 'P') /* 12  Greyscale, MIPI RAW12 packed */
++#define V4L2_PIX_FMT_Y14P    v4l2_fourcc('Y', '1', '4', 'P') /* 14  Greyscale, MIPI RAW12 packed */
+ 
+ /* Palette formats */
+ #define V4L2_PIX_FMT_PAL8    v4l2_fourcc('P', 'A', 'L', '8') /*  8  8-bit palette */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0262-media-bcm2835-unicam-Add-support-for-12bit-mono-pack.patch b/target/linux/bcm27xx/patches-5.15/950-0262-media-bcm2835-unicam-Add-support-for-12bit-mono-pack.patch
new file mode 100644
index 0000000000..13854b49ab
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0262-media-bcm2835-unicam-Add-support-for-12bit-mono-pack.patch
@@ -0,0 +1,25 @@
+From 68e9f89f86360ac048ad2653a6ae43dbf3ac5d23 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Jun 2020 17:53:32 +0100
+Subject: [PATCH] media: bcm2835-unicam: Add support for 12bit mono
+ packed format
+
+Now that V4L2_PIX_FMT_Y12P is defined, allow passing raw 12bit
+mono packed data through the peripheral.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -336,7 +336,7 @@ static const struct unicam_fmt formats[]
+ 		.depth		= 10,
+ 		.csi_dt		= 0x2b,
+ 	}, {
+-		/* NB There is no packed V4L2 fourcc for this format. */
++		.fourcc		= V4L2_PIX_FMT_Y12P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_Y12,
+ 		.code		= MEDIA_BUS_FMT_Y12_1X12,
+ 		.depth		= 12,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0263-media-bcm2835-unicam-Add-support-for-14bit-mono-sour.patch b/target/linux/bcm27xx/patches-5.15/950-0263-media-bcm2835-unicam-Add-support-for-14bit-mono-sour.patch
new file mode 100644
index 0000000000..3d8b6c9043
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0263-media-bcm2835-unicam-Add-support-for-14bit-mono-sour.patch
@@ -0,0 +1,29 @@
+From 944b57ac4241c2beac0ccdba4b56d9c47aafa9d4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Jun 2020 18:03:47 +0100
+Subject: [PATCH] media: bcm2835-unicam: Add support for 14bit mono
+ sources
+
+Now that V4L2_PIX_FMT_Y14 and V4L2_PIX_FMT_Y14P are defined,
+allow passing 14bit mono data through the peripheral.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -341,6 +341,12 @@ static const struct unicam_fmt formats[]
+ 		.code		= MEDIA_BUS_FMT_Y12_1X12,
+ 		.depth		= 12,
+ 		.csi_dt		= 0x2c,
++	}, {
++		.fourcc		= V4L2_PIX_FMT_Y14P,
++		.repacked_fourcc = V4L2_PIX_FMT_Y14,
++		.code		= MEDIA_BUS_FMT_Y14_1X14,
++		.depth		= 14,
++		.csi_dt		= 0x2d,
+ 	},
+ 	/* Embedded data format */
+ 	{
diff --git a/target/linux/bcm27xx/patches-5.15/950-0264-media-bcm2835-unicam-Add-support-for-unpacked-14bit-.patch b/target/linux/bcm27xx/patches-5.15/950-0264-media-bcm2835-unicam-Add-support-for-unpacked-14bit-.patch
new file mode 100644
index 0000000000..e4ad1e0c8d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0264-media-bcm2835-unicam-Add-support-for-unpacked-14bit-.patch
@@ -0,0 +1,42 @@
+From 029edf0e33a123569f83becb1153769e425c605e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 1 Jul 2020 10:57:57 +0100
+Subject: [PATCH] media: bcm2835-unicam: Add support for unpacked 14bit
+ Bayer formats
+
+Now that the 14bit non-packed Bayer formats are defined, add them
+into the supported formats lookup table.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -299,21 +299,25 @@ static const struct unicam_fmt formats[]
+ 		.csi_dt		= 0x2c,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SBGGR14P,
++		.repacked_fourcc = V4L2_PIX_FMT_SBGGR14,
+ 		.code		= MEDIA_BUS_FMT_SBGGR14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGBRG14P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGBRG14,
+ 		.code		= MEDIA_BUS_FMT_SGBRG14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGRBG14P,
++		.repacked_fourcc = V4L2_PIX_FMT_SGRBG14,
+ 		.code		= MEDIA_BUS_FMT_SGRBG14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SRGGB14P,
++		.repacked_fourcc = V4L2_PIX_FMT_SRGGB14,
+ 		.code		= MEDIA_BUS_FMT_SRGGB14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0265-bcm2835-dma-Add-NO_WAIT_RESP-flag.patch b/target/linux/bcm27xx/patches-5.15/950-0265-bcm2835-dma-Add-NO_WAIT_RESP-flag.patch
new file mode 100644
index 0000000000..8a6551b7ee
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0265-bcm2835-dma-Add-NO_WAIT_RESP-flag.patch
@@ -0,0 +1,54 @@
+From c3cc058594dc78b27132d81378f885e4e4ed51a0 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 1 Jul 2020 20:28:27 +0100
+Subject: [PATCH] bcm2835-dma: Add NO_WAIT_RESP flag
+
+Use bit 27 of the dreq value (the second cell of the DT DMA descriptor)
+to request that the WAIT_RESP bit is not set.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/dma/bcm2835-dma.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -165,6 +165,11 @@ struct bcm2835_desc {
+ #define BCM2835_DMA_WAIT(x)	((x & 31) << 21) /* add DMA-wait cycles */
+ #define BCM2835_DMA_NO_WIDE_BURSTS BIT(26) /* no 2 beat write bursts */
+ 
++/* A fake bit to request that the driver doesn't set the WAIT_RESP bit. */
++#define BCM2835_DMA_NO_WAIT_RESP BIT(27)
++#define WAIT_RESP(x) ((x & BCM2835_DMA_NO_WAIT_RESP) ? \
++		      0 : BCM2835_DMA_WAIT_RESP)
++
+ /* debug register bits */
+ #define BCM2835_DMA_DEBUG_LAST_NOT_SET_ERR	BIT(0)
+ #define BCM2835_DMA_DEBUG_FIFO_ERR		BIT(1)
+@@ -843,7 +848,7 @@ static struct dma_async_tx_descriptor *b
+ 	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	struct bcm2835_desc *d;
+ 	u32 info = BCM2835_DMA_D_INC | BCM2835_DMA_S_INC;
+-	u32 extra = BCM2835_DMA_INT_EN | BCM2835_DMA_WAIT_RESP;
++	u32 extra = BCM2835_DMA_INT_EN | WAIT_RESP(c->dreq);
+ 	size_t max_len = bcm2835_dma_max_frame_length(c);
+ 	size_t frames;
+ 
+@@ -873,7 +878,7 @@ static struct dma_async_tx_descriptor *b
+ 	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	struct bcm2835_desc *d;
+ 	dma_addr_t src = 0, dst = 0;
+-	u32 info = BCM2835_DMA_WAIT_RESP;
++	u32 info = WAIT_RESP(c->dreq);
+ 	u32 extra = BCM2835_DMA_INT_EN;
+ 	size_t frames;
+ 
+@@ -935,7 +940,7 @@ static struct dma_async_tx_descriptor *b
+ 	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	struct bcm2835_desc *d;
+ 	dma_addr_t src, dst;
+-	u32 info = BCM2835_DMA_WAIT_RESP;
++	u32 info = WAIT_RESP(c->dreq);
+ 	u32 extra = 0;
+ 	size_t max_len = bcm2835_dma_max_frame_length(c);
+ 	size_t frames;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0266-media-i2c-imx290-Explicitly-set-v-h-blank-on-mode-ch.patch b/target/linux/bcm27xx/patches-5.15/950-0266-media-i2c-imx290-Explicitly-set-v-h-blank-on-mode-ch.patch
new file mode 100644
index 0000000000..2d8c645ef8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0266-media-i2c-imx290-Explicitly-set-v-h-blank-on-mode-ch.patch
@@ -0,0 +1,46 @@
+From f77451147a60ac62a6cdbd06b14e7b292fff80d6 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 7 Jul 2020 10:31:53 +0100
+Subject: [PATCH] media: i2c: imx290: Explicitly set v&h blank on mode
+ change
+
+__v4l2_ctrl_modify_range only updates the current value should
+it be invalid within the new range. That can leave modes producing
+odd frame rates.
+
+Explicitly update the HBLANK and VBLANK values so that on mode
+change we revert to the default frame rate for the mode.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -796,17 +796,23 @@ static int imx290_set_fmt(struct v4l2_su
+ 			__v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate,
+ 						 imx290_calc_pixel_rate(imx290));
+ 
+-		if (imx290->hblank)
++		if (imx290->hblank) {
+ 			__v4l2_ctrl_modify_range(imx290->hblank,
+ 						 imx290->hmax_min - mode->width,
+ 						 IMX290_HMAX_MAX - mode->width,
+ 						 1, mode->hmax - mode->width);
+-		if (imx290->vblank)
++			__v4l2_ctrl_s_ctrl(imx290->hblank,
++					   mode->hmax - mode->width);
++		}
++		if (imx290->vblank) {
+ 			__v4l2_ctrl_modify_range(imx290->vblank,
+ 						 mode->vmax - mode->height,
+ 						 IMX290_VMAX_MAX - mode->height,
+ 						 1,
+ 						 mode->vmax - mode->height);
++			__v4l2_ctrl_s_ctrl(imx290->vblank,
++					   mode->vmax - mode->height);
++		}
+ 		if (imx290->exposure)
+ 			__v4l2_ctrl_modify_range(imx290->exposure,
+ 						 mode->vmax - mode->height,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0267-media-i2c-imx290-Add-support-for-g_selection-to-repo.patch b/target/linux/bcm27xx/patches-5.15/950-0267-media-i2c-imx290-Add-support-for-g_selection-to-repo.patch
new file mode 100644
index 0000000000..d5b4317d3a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0267-media-i2c-imx290-Add-support-for-g_selection-to-repo.patch
@@ -0,0 +1,156 @@
+From b1d7e2e6a94018681fe027edbe90038727c6d169 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 7 Jul 2020 11:23:48 +0100
+Subject: [PATCH] media: i2c: imx290: Add support for g_selection to
+ report cropping
+
+Userspace needs to know the cropping arrangements for each mode,
+so expose this through g_selection.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 84 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 84 insertions(+)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -61,6 +61,13 @@ enum imx290_clk_index {
+ #define IMX290_PGCTRL_THRU BIT(1)
+ #define IMX290_PGCTRL_MODE(n) ((n) << 4)
+ 
++#define IMX290_NATIVE_WIDTH		1945U
++#define IMX290_NATIVE_HEIGHT		1109U
++#define IMX290_PIXEL_ARRAY_LEFT		4U
++#define IMX290_PIXEL_ARRAY_TOP		12U
++#define IMX290_PIXEL_ARRAY_WIDTH	1937U
++#define IMX290_PIXEL_ARRAY_HEIGHT	1097U
++
+ static const char * const imx290_supply_name[] = {
+ 	"vdda",
+ 	"vddd",
+@@ -80,6 +87,7 @@ struct imx290_mode {
+ 	u32 hmax;
+ 	u32 vmax;
+ 	u8 link_freq_index;
++	struct v4l2_rect crop;
+ 
+ 	const struct imx290_regval *data;
+ 	u32 data_size;
+@@ -384,6 +392,12 @@ static const struct imx290_mode imx290_m
+ 		.hmax = 0x1130,
+ 		.vmax = 0x0465,
+ 		.link_freq_index = FREQ_INDEX_1080P,
++		.crop = {
++			.left = 4 + 8,
++			.top = 12 + 8,
++			.width = 1920,
++			.height = 1080,
++		},
+ 		.data = imx290_1080p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
+ 		.clk_data = {
+@@ -398,6 +412,12 @@ static const struct imx290_mode imx290_m
+ 		.hmax = 0x19c8,
+ 		.vmax = 0x02ee,
+ 		.link_freq_index = FREQ_INDEX_720P,
++		.crop = {
++			.left = 4 + 8 + 320,
++			.top = 12 + 8 + 180,
++			.width = 1280,
++			.height = 720,
++		},
+ 		.data = imx290_720p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_720p_settings),
+ 		.clk_data = {
+@@ -415,6 +435,12 @@ static const struct imx290_mode imx290_m
+ 		.hmax = 0x0898,
+ 		.vmax = 0x0465,
+ 		.link_freq_index = FREQ_INDEX_1080P,
++		.crop = {
++			.left = 4 + 8,
++			.top = 12 + 8,
++			.width = 1920,
++			.height = 1080,
++		},
+ 		.data = imx290_1080p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
+ 		.clk_data = {
+@@ -429,6 +455,12 @@ static const struct imx290_mode imx290_m
+ 		.hmax = 0x0ce4,
+ 		.vmax = 0x02ee,
+ 		.link_freq_index = FREQ_INDEX_720P,
++		.crop = {
++			.left = 4 + 8 + 320,
++			.top = 12 + 8 + 180,
++			.width = 1280,
++			.height = 720,
++		},
+ 		.data = imx290_720p_settings,
+ 		.data_size = ARRAY_SIZE(imx290_720p_settings),
+ 		.clk_data = {
+@@ -875,6 +907,57 @@ static int imx290_write_current_format(s
+ 	return 0;
+ }
+ 
++static const struct v4l2_rect *
++__imx290_get_pad_crop(struct imx290 *imx290, struct v4l2_subdev_pad_config *cfg,
++		      unsigned int pad, enum v4l2_subdev_format_whence which)
++{
++	switch (which) {
++	case V4L2_SUBDEV_FORMAT_TRY:
++		return v4l2_subdev_get_try_crop(&imx290->sd, cfg, pad);
++	case V4L2_SUBDEV_FORMAT_ACTIVE:
++		return &imx290->current_mode->crop;
++	}
++
++	return NULL;
++}
++
++static int imx290_get_selection(struct v4l2_subdev *sd,
++				struct v4l2_subdev_pad_config *cfg,
++				struct v4l2_subdev_selection *sel)
++{
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP: {
++		struct imx290 *imx290 = to_imx290(sd);
++
++		mutex_lock(&imx290->lock);
++		sel->r = *__imx290_get_pad_crop(imx290, cfg, sel->pad,
++						sel->which);
++		mutex_unlock(&imx290->lock);
++
++		return 0;
++	}
++
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++		sel->r.top = 0;
++		sel->r.left = 0;
++		sel->r.width = IMX290_NATIVE_WIDTH;
++		sel->r.height = IMX290_NATIVE_HEIGHT;
++
++		return 0;
++
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		sel->r.top = IMX290_PIXEL_ARRAY_TOP;
++		sel->r.left = IMX290_PIXEL_ARRAY_LEFT;
++		sel->r.width = IMX290_PIXEL_ARRAY_WIDTH;
++		sel->r.height = IMX290_PIXEL_ARRAY_HEIGHT;
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
+ /* Start streaming */
+ static int imx290_start_streaming(struct imx290 *imx290)
+ {
+@@ -1069,6 +1152,7 @@ static const struct v4l2_subdev_pad_ops
+ 	.enum_frame_size = imx290_enum_frame_size,
+ 	.get_fmt = imx290_get_fmt,
+ 	.set_fmt = imx290_set_fmt,
++	.get_selection = imx290_get_selection,
+ };
+ 
+ static const struct v4l2_subdev_ops imx290_subdev_ops = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0268-media-i2c-imx290-Set-the-colorspace-fields-in-the-fo.patch b/target/linux/bcm27xx/patches-5.15/950-0268-media-i2c-imx290-Set-the-colorspace-fields-in-the-fo.patch
new file mode 100644
index 0000000000..3bde348733
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0268-media-i2c-imx290-Set-the-colorspace-fields-in-the-fo.patch
@@ -0,0 +1,31 @@
+From 011a58382464937945ad70946241aaa881b8a512 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 7 Jul 2020 11:51:26 +0100
+Subject: [PATCH] media: i2c: imx290: Set the colorspace fields in the
+ format
+
+The colorspace fields were left untouched in imx290_set_fmt
+which lead to a v4l2-compliance failure.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -813,6 +813,14 @@ static int imx290_set_fmt(struct v4l2_su
+ 
+ 	fmt->format.code = imx290->formats[i].code;
+ 	fmt->format.field = V4L2_FIELD_NONE;
++	fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->format.ycbcr_enc =
++			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
++	fmt->format.quantization =
++		V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->format.colorspace,
++					      fmt->format.ycbcr_enc);
++	fmt->format.xfer_func =
++		V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
+ 
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ 		format = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0269-media-bcm2835-unicam-Reinstate-V4L2_CAP_READWRITE-in.patch b/target/linux/bcm27xx/patches-5.15/950-0269-media-bcm2835-unicam-Reinstate-V4L2_CAP_READWRITE-in.patch
new file mode 100644
index 0000000000..02ba275391
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0269-media-bcm2835-unicam-Reinstate-V4L2_CAP_READWRITE-in.patch
@@ -0,0 +1,28 @@
+From b73bee576737bb370a07bc02dc65b9cc82fda94f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 7 Jul 2020 14:23:40 +0100
+Subject: [PATCH] media: bcm2835-unicam: Reinstate V4L2_CAP_READWRITE
+ in the caps
+
+v4l2-compliance throws a failure if the device doesn't advertise
+V4L2_CAP_READWRITE but allows read or write operations.
+We do support read, so reinstate the flag.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2418,8 +2418,8 @@ static int register_node(struct unicam_d
+ 	vdev->queue = q;
+ 	vdev->lock = &node->lock;
+ 	vdev->device_caps = (pad_id == IMAGE_PAD) ?
+-			    (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING) :
+-			    (V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING);
++				V4L2_CAP_VIDEO_CAPTURE : V4L2_CAP_META_CAPTURE;
++	vdev->device_caps |= V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+ 
+ 	/* Define the device names */
+ 	snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0270-media-bcm2835-unicam-Ensure-type-is-VIDEO_CAPTURE-in.patch b/target/linux/bcm27xx/patches-5.15/950-0270-media-bcm2835-unicam-Ensure-type-is-VIDEO_CAPTURE-in.patch
new file mode 100644
index 0000000000..62359bbaa8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0270-media-bcm2835-unicam-Ensure-type-is-VIDEO_CAPTURE-in.patch
@@ -0,0 +1,36 @@
+From 4ff8008e5a3f2d6dc1fa669f6cebb5f8b88e875b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 7 Jul 2020 14:52:43 +0100
+Subject: [PATCH] media: bcm2835-unicam: Ensure type is VIDEO_CAPTURE
+ in [g|s]_selection
+
+[g|s]_selection pass in a buffer type that needs to be validated
+before passing on to the sensor subdev.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1885,6 +1885,9 @@ static int unicam_s_selection(struct fil
+ 		.r = sel->r,
+ 	};
+ 
++	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
++		return -EINVAL;
++
+ 	return v4l2_subdev_call(dev->sensor, pad, set_selection, NULL, &sdsel);
+ }
+ 
+@@ -1899,6 +1902,9 @@ static int unicam_g_selection(struct fil
+ 	};
+ 	int ret;
+ 
++	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
++		return -EINVAL;
++
+ 	ret = v4l2_subdev_call(dev->sensor, pad, get_selection, NULL, &sdsel);
+ 	if (!ret)
+ 		sel->r = sdsel.r;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0271-media-bcm2835-unicam-Set-VPU-min-clock-freq-to-250Mh.patch b/target/linux/bcm27xx/patches-5.15/950-0271-media-bcm2835-unicam-Set-VPU-min-clock-freq-to-250Mh.patch
new file mode 100644
index 0000000000..86a1208fa6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0271-media-bcm2835-unicam-Set-VPU-min-clock-freq-to-250Mh.patch
@@ -0,0 +1,127 @@
+From bf30883473f0d25fa7614d53022c20330d840aa0 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Mon, 11 May 2020 13:02:22 +0100
+Subject: [PATCH] media: bcm2835: unicam: Set VPU min clock freq to
+ 250Mhz.
+
+When streaming with Unicam, the VPU must have a clock frequency of at
+least 250Mhz.  Otherwise, the input fifos could overrun, causing
+image corruption.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 49 +++++++++++++++++--
+ 1 file changed, 44 insertions(+), 5 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -89,6 +89,11 @@ MODULE_PARM_DESC(debug, "Debug level 0-3
+ 		v4l2_err(&(dev)->v4l2_dev, fmt, ##arg)
+ 
+ /*
++ * Unicam must request a minimum of 250Mhz from the VPU clock.
++ * Otherwise the input FIFOs overrun and cause image corruption.
++ */
++#define MIN_VPU_CLOCK_RATE (250 * 1000 * 1000)
++/*
+  * To protect against a dodgy sensor driver never returning an error from
+  * enum_mbus_code, set a maximum index value to be used.
+  */
+@@ -417,8 +422,10 @@ struct unicam_device {
+ 	void __iomem *base;
+ 	/* clock gating base address */
+ 	void __iomem *clk_gate_base;
+-	/* clock handle */
++	/* lp clock handle */
+ 	struct clk *clock;
++	/* vpu clock handle */
++	struct clk *vpu_clock;
+ 	/* V4l2 device */
+ 	struct v4l2_device v4l2_dev;
+ 	struct media_device mdev;
+@@ -1678,16 +1685,28 @@ static int unicam_start_streaming(struct
+ 	unicam_dbg(1, dev, "Running with %u data lanes\n",
+ 		   dev->active_data_lanes);
+ 
+-	ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
++	ret = clk_set_min_rate(dev->vpu_clock, MIN_VPU_CLOCK_RATE);
++	if (ret) {
++		unicam_err(dev, "failed to set up VPU clock\n");
++		goto err_pm_put;
++	}
++
++	ret = clk_prepare_enable(dev->vpu_clock);
+ 	if (ret) {
+-		unicam_err(dev, "failed to set up clock\n");
++		unicam_err(dev, "Failed to enable VPU clock: %d\n", ret);
+ 		goto err_pm_put;
+ 	}
+ 
++	ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
++	if (ret) {
++		unicam_err(dev, "failed to set up CSI clock\n");
++		goto err_vpu_clock;
++	}
++
+ 	ret = clk_prepare_enable(dev->clock);
+ 	if (ret) {
+ 		unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
+-		goto err_pm_put;
++		goto err_vpu_clock;
+ 	}
+ 
+ 	for (i = 0; i < ARRAY_SIZE(dev->node); i++) {
+@@ -1721,6 +1740,11 @@ static int unicam_start_streaming(struct
+ err_disable_unicam:
+ 	unicam_disable(dev);
+ 	clk_disable_unprepare(dev->clock);
++err_vpu_clock:
++	ret = clk_set_min_rate(dev->vpu_clock, 0);
++	if (ret)
++		unicam_err(dev, "failed to reset the VPU clock\n");
++	clk_disable_unprepare(dev->vpu_clock);
+ err_pm_put:
+ 	unicam_runtime_put(dev);
+ err_streaming:
+@@ -1738,6 +1762,8 @@ static void unicam_stop_streaming(struct
+ 	node->streaming = false;
+ 
+ 	if (node->pad_id == IMAGE_PAD) {
++		int ret;
++
+ 		/*
+ 		 * Stop streaming the sensor and disable the peripheral.
+ 		 * We cannot continue streaming embedded data with the
+@@ -1747,6 +1773,12 @@ static void unicam_stop_streaming(struct
+ 			unicam_err(dev, "stream off failed in subdev\n");
+ 
+ 		unicam_disable(dev);
++
++		ret = clk_set_min_rate(dev->vpu_clock, 0);
++		if (ret)
++			unicam_err(dev, "failed to reset the min VPU clock\n");
++
++		clk_disable_unprepare(dev->vpu_clock);
+ 		clk_disable_unprepare(dev->clock);
+ 		unicam_runtime_put(dev);
+ 
+@@ -2750,11 +2782,18 @@ static int unicam_probe(struct platform_
+ 
+ 	unicam->clock = devm_clk_get(&pdev->dev, "lp");
+ 	if (IS_ERR(unicam->clock)) {
+-		unicam_err(unicam, "Failed to get clock\n");
++		unicam_err(unicam, "Failed to get lp clock\n");
+ 		ret = PTR_ERR(unicam->clock);
+ 		goto err_unicam_put;
+ 	}
+ 
++	unicam->vpu_clock = devm_clk_get(&pdev->dev, "vpu");
++	if (IS_ERR(unicam->vpu_clock)) {
++		unicam_err(unicam, "Failed to get vpu clock\n");
++		ret = PTR_ERR(unicam->vpu_clock);
++		goto err_unicam_put;
++	}
++
+ 	ret = platform_get_irq(pdev, 0);
+ 	if (ret <= 0) {
+ 		dev_err(&pdev->dev, "No IRQ resource\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0272-dt-bindings-bcm2835-unicam-Update-documentation-with.patch b/target/linux/bcm27xx/patches-5.15/950-0272-dt-bindings-bcm2835-unicam-Update-documentation-with.patch
new file mode 100644
index 0000000000..641030e9e5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0272-dt-bindings-bcm2835-unicam-Update-documentation-with.patch
@@ -0,0 +1,38 @@
+From 1866d5e9045e59509678b1c24fff3163d1c2f742 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Mon, 11 May 2020 13:06:27 +0100
+Subject: [PATCH] dt-bindings: bcm2835-unicam: Update documentation
+ with new clock params
+
+Update the documentation to reflect the new "VPU" clock needed
+by the bcm2835-unicam driver.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../devicetree/bindings/media/bcm2835-unicam.txt          | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/Documentation/devicetree/bindings/media/bcm2835-unicam.txt
++++ b/Documentation/devicetree/bindings/media/bcm2835-unicam.txt
+@@ -20,7 +20,7 @@ Required properties:
+ - interrupts	: should contain the IRQ line for this Unicam instance.
+ - clocks	: list of clock specifiers, corresponding to entries in
+ 		  clock-names property.
+-- clock-names	: must contain an "lp" entry, matching entries in the
++- clock-names	: must contain "lp" and "vpu" entries, matching entries in the
+ 		  clocks property.
+ 
+ Unicam supports a single port node. It should contain one 'port' child node
+@@ -46,9 +46,9 @@ Example:
+ 		reg = <0x7e801000 0x800>,
+ 		      <0x7e802004 0x4>;
+ 		interrupts = <2 7>;
+-		clocks = <&clocks BCM2835_CLOCK_CAM1>;
+-		clock-names = "lp";
+-
++		clocks = <&clocks BCM2835_CLOCK_CAM1>,
++			 <&firmware_clocks 4>;
++		clock-names = "lp", "vpu";
+ 		port {
+ 			csi1_ep: endpoint {
+ 				remote-endpoint = <&tc358743_0>;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0273-leds-Add-the-actpwr-trigger.patch b/target/linux/bcm27xx/patches-5.15/950-0273-leds-Add-the-actpwr-trigger.patch
new file mode 100644
index 0000000000..0c7b659b18
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0273-leds-Add-the-actpwr-trigger.patch
@@ -0,0 +1,235 @@
+From 989c695cd0822269a5eedef3f10700d87316291e Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 13 Jul 2020 10:33:19 +0100
+Subject: [PATCH] leds: Add the actpwr trigger
+
+The actpwr trigger is a meta trigger that cycles between an inverted
+mmc0 and default-on. It is written in a way that could fairly easily
+be generalised to support alternative sets of source triggers.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/leds/trigger/Kconfig          |  11 ++
+ drivers/leds/trigger/Makefile         |   1 +
+ drivers/leds/trigger/ledtrig-actpwr.c | 190 ++++++++++++++++++++++++++
+ 3 files changed, 202 insertions(+)
+ create mode 100644 drivers/leds/trigger/ledtrig-actpwr.c
+
+--- a/drivers/leds/trigger/Kconfig
++++ b/drivers/leds/trigger/Kconfig
+@@ -160,4 +160,15 @@ config LEDS_TRIGGER_TTY
+ 
+ 	  When build as a module this driver will be called ledtrig-tty.
+ 
++config LEDS_TRIGGER_ACTPWR
++	tristate "ACT/PWR Input Trigger"
++	depends on LEDS_TRIGGERS
++	help
++	  This trigger is intended for platforms that have one software-
++	  controllable LED and no dedicated activity or power LEDs, hence the
++	  need to make the one LED perform both functions. It cycles between
++	  default-on and an inverted mmc0 every 500ms, guaranteeing that it is
++	  on for at least half of the time.
++	  If unsure, say N.
++
+ endif # LEDS_TRIGGERS
+--- a/drivers/leds/trigger/Makefile
++++ b/drivers/leds/trigger/Makefile
+@@ -17,3 +17,4 @@ obj-$(CONFIG_LEDS_TRIGGER_NETDEV)	+= led
+ obj-$(CONFIG_LEDS_TRIGGER_PATTERN)	+= ledtrig-pattern.o
+ obj-$(CONFIG_LEDS_TRIGGER_AUDIO)	+= ledtrig-audio.o
+ obj-$(CONFIG_LEDS_TRIGGER_TTY)		+= ledtrig-tty.o
++obj-$(CONFIG_LEDS_TRIGGER_ACTPWR)	+= ledtrig-actpwr.o
+--- /dev/null
++++ b/drivers/leds/trigger/ledtrig-actpwr.c
+@@ -0,0 +1,190 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Activity/power trigger
++ *
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd.
++ *
++ * Based on Atsushi Nemoto's ledtrig-heartbeat.c, although there may be
++ * nothing left of the original now.
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/timer.h>
++#include <linux/leds.h>
++#include "../leds.h"
++
++enum {
++	TRIG_ACT,
++	TRIG_PWR,
++
++	TRIG_COUNT
++};
++
++struct actpwr_trig_src {
++	const char *name;
++	int interval;
++	bool invert;
++};
++
++struct actpwr_vled {
++	struct led_classdev cdev;
++	struct actpwr_trig_data *parent;
++	enum led_brightness value;
++	unsigned int interval;
++	bool invert;
++};
++
++struct actpwr_trig_data {
++	struct led_trigger trig;
++	struct actpwr_vled virt_leds[TRIG_COUNT];
++	struct actpwr_vled *active;
++	struct timer_list timer;
++	int next_active;
++};
++
++static int actpwr_trig_activate(struct led_classdev *led_cdev);
++static void actpwr_trig_deactivate(struct led_classdev *led_cdev);
++
++static const struct actpwr_trig_src actpwr_trig_sources[TRIG_COUNT] = {
++	[TRIG_ACT] = { "mmc0", 500, true },
++	[TRIG_PWR] = { "default-on", 500, false },
++};
++
++static struct actpwr_trig_data actpwr_data = {
++	{
++		.name     = "actpwr",
++		.activate = actpwr_trig_activate,
++		.deactivate = actpwr_trig_deactivate,
++	}
++};
++
++static void actpwr_brightness_set(struct led_classdev *led_cdev,
++				  enum led_brightness value)
++{
++	struct actpwr_vled *vled = container_of(led_cdev, struct actpwr_vled,
++					       cdev);
++	struct actpwr_trig_data *trig = vled->parent;
++
++	if (vled->invert)
++		value = !value;
++	vled->value = value;
++
++	if (vled == trig->active)
++		led_trigger_event(&trig->trig, value);
++}
++
++static int actpwr_brightness_set_blocking(struct led_classdev *led_cdev,
++					  enum led_brightness value)
++{
++	actpwr_brightness_set(led_cdev, value);
++	return 0;
++}
++
++static enum led_brightness actpwr_brightness_get(struct led_classdev *led_cdev)
++{
++	struct actpwr_vled *vled = container_of(led_cdev, struct actpwr_vled,
++					      cdev);
++
++	return vled->value;
++}
++
++static void actpwr_trig_cycle(struct timer_list *t)
++{
++	struct actpwr_trig_data *trig  = &actpwr_data;
++	struct actpwr_vled *active;
++
++	active = &trig->virt_leds[trig->next_active];
++	trig->active = active;
++	trig->next_active = (trig->next_active + 1) % TRIG_COUNT;
++
++	led_trigger_event(&trig->trig, active->value);
++
++	mod_timer(&trig->timer, jiffies + msecs_to_jiffies(active->interval));
++}
++
++static int actpwr_trig_activate(struct led_classdev *led_cdev)
++{
++	struct actpwr_trig_data *trig  = &actpwr_data;
++
++	/* Start the timer if this is the first LED */
++	if (!trig->active)
++		actpwr_trig_cycle(&trig->timer);
++	else
++		led_set_brightness_nosleep(led_cdev, trig->active->value);
++
++	return 0;
++}
++
++static void actpwr_trig_deactivate(struct led_classdev *led_cdev)
++{
++	struct actpwr_trig_data *trig  = &actpwr_data;
++
++	if (list_empty(&trig->trig.led_cdevs)) {
++		del_timer_sync(&trig->timer);
++		trig->active = NULL;
++	}
++}
++
++static int __init actpwr_trig_init(void)
++{
++	struct actpwr_trig_data *trig  = &actpwr_data;
++	int ret = 0;
++	int i;
++
++	timer_setup(&trig->timer, actpwr_trig_cycle, 0);
++
++	/* Register one "LED" for each source trigger */
++	for (i = 0; i < TRIG_COUNT; i++)
++	{
++		struct actpwr_vled *vled = &trig->virt_leds[i];
++		struct led_classdev *cdev = &vled->cdev;
++		const struct actpwr_trig_src *src = &actpwr_trig_sources[i];
++
++		vled->parent = trig;
++		vled->interval = src->interval;
++		vled->invert = src->invert;
++		cdev->name = src->name;
++		cdev->brightness_set = actpwr_brightness_set;
++		cdev->brightness_set_blocking = actpwr_brightness_set_blocking;
++		cdev->brightness_get = actpwr_brightness_get;
++		cdev->default_trigger = src->name;
++		ret = led_classdev_register(NULL, cdev);
++		if (ret)
++			goto error_classdev;
++	}
++
++	ret = led_trigger_register(&trig->trig);
++	if (ret)
++		goto error_classdev;
++
++	return 0;
++
++error_classdev:
++	while (i > 0)
++	{
++		i--;
++		led_classdev_unregister(&trig->virt_leds[i].cdev);
++	}
++
++	return ret;
++}
++
++static void __exit actpwr_trig_exit(void)
++{
++	int i;
++
++	led_trigger_unregister(&actpwr_data.trig);
++	for (i = 0; i < TRIG_COUNT; i++)
++	{
++		led_classdev_unregister(&actpwr_data.virt_leds[i].cdev);
++	}
++}
++
++module_init(actpwr_trig_init);
++module_exit(actpwr_trig_exit);
++
++MODULE_AUTHOR("Phil Elwell <phil@raspberrypi.com>");
++MODULE_DESCRIPTION("ACT/PWR LED trigger");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0274-bcm2835-dma-Advertise-the-full-DMA-range.patch b/target/linux/bcm27xx/patches-5.15/950-0274-bcm2835-dma-Advertise-the-full-DMA-range.patch
new file mode 100644
index 0000000000..e5078414bc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0274-bcm2835-dma-Advertise-the-full-DMA-range.patch
@@ -0,0 +1,77 @@
+From 775277f1d6585ea048c73ca001ed2867a32396a4 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 22 Jul 2020 17:59:31 +0100
+Subject: [PATCH] bcm2835-dma: Advertise the full DMA range
+
+Unless the DMA mask is set wider than 32 bits, DMA mapping will use a
+bounce buffer.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/dma/bcm2835-dma.c | 18 +++++++++++++++---
+ 1 file changed, 15 insertions(+), 3 deletions(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -41,6 +41,7 @@
+ #define BCM2711_DMA_MEMCPY_CHAN 14
+ 
+ struct bcm2835_dma_cfg_data {
++	u64	dma_mask;
+ 	u32	chan_40bit_mask;
+ };
+ 
+@@ -300,10 +301,12 @@ DEFINE_SPINLOCK(memcpy_lock);
+ 
+ static const struct bcm2835_dma_cfg_data bcm2835_dma_cfg = {
+ 	.chan_40bit_mask = 0,
++	.dma_mask = DMA_BIT_MASK(32),
+ };
+ 
+ static const struct bcm2835_dma_cfg_data bcm2711_dma_cfg = {
+ 	.chan_40bit_mask = BIT(11) | BIT(12) | BIT(13) | BIT(14),
++	.dma_mask = DMA_BIT_MASK(36),
+ };
+ 
+ static inline size_t bcm2835_dma_max_frame_length(struct bcm2835_chan *c)
+@@ -1180,6 +1183,8 @@ static struct dma_chan *bcm2835_dma_xlat
+ 
+ static int bcm2835_dma_probe(struct platform_device *pdev)
+ {
++	const struct bcm2835_dma_cfg_data *cfg_data;
++	const struct of_device_id *of_id;
+ 	struct bcm2835_dmadev *od;
+ 	struct resource *res;
+ 	void __iomem *base;
+@@ -1189,13 +1194,20 @@ static int bcm2835_dma_probe(struct plat
+ 	int irq_flags;
+ 	uint32_t chans_available;
+ 	char chan_name[BCM2835_DMA_CHAN_NAME_SIZE];
+-	const struct of_device_id *of_id;
+ 	int chan_count, chan_start, chan_end;
+ 
++	of_id = of_match_node(bcm2835_dma_of_match, pdev->dev.of_node);
++	if (!of_id) {
++		dev_err(&pdev->dev, "Failed to match compatible string\n");
++		return -EINVAL;
++	}
++
++	cfg_data = of_id->data;
++
+ 	if (!pdev->dev.dma_mask)
+ 		pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+ 
+-	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
++	rc = dma_set_mask_and_coherent(&pdev->dev, cfg_data->dma_mask);
+ 	if (rc) {
+ 		dev_err(&pdev->dev, "Unable to set DMA mask\n");
+ 		return rc;
+@@ -1260,7 +1272,7 @@ static int bcm2835_dma_probe(struct plat
+ 		return -EINVAL;
+ 	}
+ 
+-	od->cfg_data = of_id->data;
++	od->cfg_data = cfg_data;
+ 
+ 	/* Request DMA channel mask from device tree */
+ 	if (of_property_read_u32(pdev->dev.of_node,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0275-media-bcm2835-unicam-Select-MEDIA_CONTROLLER-and-VID.patch b/target/linux/bcm27xx/patches-5.15/950-0275-media-bcm2835-unicam-Select-MEDIA_CONTROLLER-and-VID.patch
new file mode 100644
index 0000000000..2ae2074425
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0275-media-bcm2835-unicam-Select-MEDIA_CONTROLLER-and-VID.patch
@@ -0,0 +1,27 @@
+From 618001e2e90c1d7311c930c0eff674fc844619f3 Mon Sep 17 00:00:00 2001
+From: Hristo Venev <hristo@venev.name>
+Date: Wed, 19 Aug 2020 17:02:22 +0300
+Subject: [PATCH] media: bcm2835: unicam: Select MEDIA_CONTROLLER and
+ VIDEO_V4L2_SUBDEV_API
+
+That is what almost all other drivers appear to be doing.
+
+Signed-off-by: Hristo Venev <hristo@venev.name>
+---
+ drivers/media/platform/bcm2835/Kconfig | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/Kconfig
++++ b/drivers/media/platform/bcm2835/Kconfig
+@@ -2,8 +2,10 @@
+ 
+ config VIDEO_BCM2835_UNICAM
+ 	tristate "Broadcom BCM2835 Unicam video capture driver"
+-	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && MEDIA_CONTROLLER
++	depends on VIDEO_V4L2
+ 	depends on ARCH_BCM2835 || COMPILE_TEST
++	select VIDEO_V4L2_SUBDEV_API
++	select MEDIA_CONTROLLER
+ 	select VIDEOBUF2_DMA_CONTIG
+ 	select V4L2_FWNODE
+ 	help
diff --git a/target/linux/bcm27xx/patches-5.15/950-0276-staging-media-rpivid-Select-MEDIA_CONTROLLER-and-MED.patch b/target/linux/bcm27xx/patches-5.15/950-0276-staging-media-rpivid-Select-MEDIA_CONTROLLER-and-MED.patch
new file mode 100644
index 0000000000..72bd1994cc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0276-staging-media-rpivid-Select-MEDIA_CONTROLLER-and-MED.patch
@@ -0,0 +1,32 @@
+From 914098ba4c3b746211fe03085c33dcb6c8c6fa15 Mon Sep 17 00:00:00 2001
+From: Hristo Venev <hristo@venev.name>
+Date: Wed, 19 Aug 2020 17:05:53 +0300
+Subject: [PATCH] staging: media: rpivid: Select MEDIA_CONTROLLER and
+ MEDIA_CONTROLLER_REQUEST_API
+
+MEDIA_CONTROLLER_REQUEST_API is a hidden option. If rpivid depends on it,
+the user would need to first enable another driver that selects
+MEDIA_CONTROLLER_REQUEST_API, and only then rpivid would become available.
+
+By selecting it instead of depending on it, it becomes possible to enable
+rpivid without having to enable other potentially unnecessary drivers.
+
+Signed-off-by: Hristo Venev <hristo@venev.name>
+---
+ drivers/staging/media/rpivid/Kconfig | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/media/rpivid/Kconfig
++++ b/drivers/staging/media/rpivid/Kconfig
+@@ -3,9 +3,9 @@
+ config VIDEO_RPIVID
+ 	tristate "Rpi H265 driver"
+ 	depends on VIDEO_DEV && VIDEO_V4L2
+-	depends on MEDIA_CONTROLLER
+ 	depends on OF
+-	depends on MEDIA_CONTROLLER_REQUEST_API
++	select MEDIA_CONTROLLER
++	select MEDIA_CONTROLLER_REQUEST_API
+ 	select VIDEOBUF2_DMA_CONTIG
+ 	select V4L2_MEM2MEM_DEV
+ 	help
diff --git a/target/linux/bcm27xx/patches-5.15/950-0277-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch b/target/linux/bcm27xx/patches-5.15/950-0277-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch
new file mode 100644
index 0000000000..024ebd9887
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0277-media-bcm2835-unicam-Drop-WARN-on-uing-direct-cache-.patch
@@ -0,0 +1,34 @@
+From 205ea95a0cec26b2df0a46ae8bb4220f4ac97b39 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 27 Aug 2020 16:30:26 +0100
+Subject: [PATCH] media: bcm2835-unicam: Drop WARN on uing direct cache
+ alias
+
+Pi 0&1 pass all ARM accesses through the VPU L2 cache, therefore
+the dma-ranges property sets the cache alias bits to other
+than the direct alias, hence this WARN was firing.
+
+It was overprotective coding, so assume that everything is OK
+with the dma-ranges, and remove the WARN.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 7 -------
+ 1 file changed, 7 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -709,13 +709,6 @@ static void unicam_wr_dma_addr(struct un
+ {
+ 	dma_addr_t endaddr = dmaaddr + buffer_size;
+ 
+-	/*
+-	 * dmaaddr and endaddr should be a 32-bit address with the top two bits
+-	 * set to 0x3 to signify uncached access through the Videocore memory
+-	 * controller.
+-	 */
+-	WARN_ON((dmaaddr >> 30) != 0x3 || (endaddr >> 30) != 0x3);
+-
+ 	if (pad_id == IMAGE_PAD) {
+ 		reg_write(dev, UNICAM_IBSA0, dmaaddr);
+ 		reg_write(dev, UNICAM_IBEA0, endaddr);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0278-media-i2c-tc358743-Only-allow-supported-pixel-fmts-i.patch b/target/linux/bcm27xx/patches-5.15/950-0278-media-i2c-tc358743-Only-allow-supported-pixel-fmts-i.patch
new file mode 100644
index 0000000000..226e56ad2d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0278-media-i2c-tc358743-Only-allow-supported-pixel-fmts-i.patch
@@ -0,0 +1,30 @@
+From fcdf09ccef256160d3d87a49a900fabff20286a4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 10 Jul 2020 12:40:50 +0100
+Subject: [PATCH] media: i2c: tc358743: Only allow supported pixel fmts
+ in set_fmt
+
+Fix commit "media: tc358743: Return an appropriate colorspace from
+tc358743_set_fmt" to ensure that the format passed in to set_fmt
+is checked to be valid, and reset to the current format if not.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/tc358743.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -1731,8 +1731,10 @@ static int tc358743_set_fmt(struct v4l2_
+ 	u32 code = format->format.code; /* is overwritten by get_fmt */
+ 	int ret = tc358743_get_fmt(sd, sd_state, format);
+ 
+-	format->format.code = code;
+-	format->format.colorspace = tc358743_g_colorspace(code);
++	if (code == MEDIA_BUS_FMT_RGB888_1X24 ||
++	    code == MEDIA_BUS_FMT_UYVY8_1X16)
++		format->format.code = code;
++	format->format.colorspace = tc358743_g_colorspace(format->format.code);
+ 
+ 	if (ret)
+ 		return ret;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0279-dwc_otg-whitelist_table-is-now-productlist_table.patch b/target/linux/bcm27xx/patches-5.15/950-0279-dwc_otg-whitelist_table-is-now-productlist_table.patch
new file mode 100644
index 0000000000..d3b920fdd2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0279-dwc_otg-whitelist_table-is-now-productlist_table.patch
@@ -0,0 +1,20 @@
+From 1a61ef7d787f940b8ff93f054a332b4a47a512c6 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Thu, 3 Sep 2020 14:02:41 +0100
+Subject: [PATCH] dwc_otg: whitelist_table is now productlist_table
+
+---
+ drivers/usb/core/otg_productlist.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/usb/core/otg_productlist.h
++++ b/drivers/usb/core/otg_productlist.h
+@@ -139,7 +139,7 @@ static int is_targeted(struct usb_device
+ 		/* NOTE: can't use usb_match_id() since interface caches
+ 		 * aren't set up yet. this is cut/paste from that code.
+ 		 */
+-		for (id = whitelist_table; id->match_flags; id++) {
++		for (id = productlist_table; id->match_flags; id++) {
+ #ifdef DEBUG
+ 			dev_dbg(&dev->dev,
+ 				"ID: V:%04x P:%04x DC:%04x SC:%04x PR:%04x \n",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0280-include-firmware-Add-enum-for-RPI_FIRMWARE_FRAMEBUFF.patch b/target/linux/bcm27xx/patches-5.15/950-0280-include-firmware-Add-enum-for-RPI_FIRMWARE_FRAMEBUFF.patch
new file mode 100644
index 0000000000..1ed2f60512
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0280-include-firmware-Add-enum-for-RPI_FIRMWARE_FRAMEBUFF.patch
@@ -0,0 +1,23 @@
+From 4e9a87cfa5e6d7ee2dae51872634a4bf0e33b8f3 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 3 Sep 2020 17:09:07 +0100
+Subject: [PATCH] include/firmware: Add enum for
+ RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_ID
+
+Used by audio and FKMS.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ include/soc/bcm2835/raspberrypi-firmware.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -113,6 +113,7 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF =               0x0004000f,
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF =            0x00040010,
+ 	RPI_FIRMWARE_FRAMEBUFFER_RELEASE =                    0x00048001,
++	RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_ID =             0x00040016,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_DISPLAY_NUM =            0x00048013,
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS =           0x00040013,
+ 	RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_SETTINGS =       0x00040014,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0281-media-i2c-Add-driver-for-Sony-IMX477-sensor.patch b/target/linux/bcm27xx/patches-5.15/950-0281-media-i2c-Add-driver-for-Sony-IMX477-sensor.patch
new file mode 100644
index 0000000000..499b48e69c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0281-media-i2c-Add-driver-for-Sony-IMX477-sensor.patch
@@ -0,0 +1,2266 @@
+From 25714e34632a2bf39d913023a56e1a2cb576a6d7 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Fri, 8 May 2020 10:00:12 +0100
+Subject: [PATCH] media: i2c: Add driver for Sony IMX477 sensor
+
+Adds a driver for the 12MPix Sony IMX477 CSI2 sensor.
+Whilst the sensor supports 2 or 4 CSI2 data lanes, this driver
+currently only supports 2 lanes.
+
+The following Bayer modes are currently available:
+
+4056x3040 12-bit @ 10fps
+2028x1520 12-bit (binned) @ 40fps
+2028x1050 12-bit (cropped/binned) @ 50fps
+1012x760 10-bit (scaled) @ 120 fps
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ MAINTAINERS                |    8 +
+ drivers/media/i2c/Kconfig  |   11 +
+ drivers/media/i2c/Makefile |    1 +
+ drivers/media/i2c/imx477.c | 2191 ++++++++++++++++++++++++++++++++++++
+ 4 files changed, 2211 insertions(+)
+ create mode 100644 drivers/media/i2c/imx477.c
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -17514,6 +17514,14 @@ T:	git git://linuxtv.org/media_tree.git
+ F:	Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml
+ F:	drivers/media/i2c/imx412.c
+ 
++SONY IMX477 SENSOR DRIVER
++M:	Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
++L:	linux-media@vger.kernel.org
++S:	Maintained
++T:	git git://linuxtv.org/media_tree.git
++F:	Documentation/devicetree/bindings/media/i2c/imx477.yaml
++F:	drivers/media/i2c/imx477.c
++
+ SONY MEMORYSTICK SUBSYSTEM
+ M:	Maxim Levitsky <maximlevitsky@gmail.com>
+ M:	Alex Dubov <oakad@yahoo.com>
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -817,6 +817,17 @@ config VIDEO_IMX290
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called imx290.
+ 
++config VIDEO_IMX477
++	tristate "Sony IMX477 sensor support"
++	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
++	depends on MEDIA_CAMERA_SUPPORT
++	help
++	  This is a Video4Linux2 sensor driver for the Sony
++	  IMX477 camera.
++
++	  To compile this driver as a module, choose M here: the
++	  module will be called imx477.
++
+ config VIDEO_IMX319
+ 	tristate "Sony IMX319 sensor support"
+ 	depends on I2C && VIDEO_V4L2
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -124,6 +124,7 @@ obj-$(CONFIG_VIDEO_IMX219)	+= imx219.o
+ obj-$(CONFIG_VIDEO_IMX258)	+= imx258.o
+ obj-$(CONFIG_VIDEO_IMX274)	+= imx274.o
+ obj-$(CONFIG_VIDEO_IMX290)	+= imx290.o
++obj-$(CONFIG_VIDEO_IMX477)	+= imx477.o
+ obj-$(CONFIG_VIDEO_IMX319)	+= imx319.o
+ obj-$(CONFIG_VIDEO_IMX334)	+= imx334.o
+ obj-$(CONFIG_VIDEO_IMX335)	+= imx335.o
+--- /dev/null
++++ b/drivers/media/i2c/imx477.c
+@@ -0,0 +1,2191 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * A V4L2 driver for Sony IMX477 cameras.
++ * Copyright (C) 2020, Raspberry Pi (Trading) Ltd
++ *
++ * Based on Sony imx219 camera driver
++ * Copyright (C) 2019-2020 Raspberry Pi (Trading) Ltd
++ */
++#include <asm/unaligned.h>
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/i2c.h>
++#include <linux/module.h>
++#include <linux/pm_runtime.h>
++#include <linux/regulator/consumer.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-fwnode.h>
++#include <media/v4l2-mediabus.h>
++
++#define IMX477_REG_VALUE_08BIT		1
++#define IMX477_REG_VALUE_16BIT		2
++
++/* Chip ID */
++#define IMX477_REG_CHIP_ID		0x0016
++#define IMX477_CHIP_ID			0x0477
++
++#define IMX477_REG_MODE_SELECT		0x0100
++#define IMX477_MODE_STANDBY		0x00
++#define IMX477_MODE_STREAMING		0x01
++
++#define IMX477_REG_ORIENTATION		0x101
++
++#define IMX477_XCLK_FREQ		24000000
++
++#define IMX477_DEFAULT_LINK_FREQ	450000000
++
++/* Pixel rate is fixed at 840MHz for all the modes */
++#define IMX477_PIXEL_RATE		840000000
++
++/* V_TIMING internal */
++#define IMX477_REG_FRAME_LENGTH		0x0340
++#define IMX477_FRAME_LENGTH_MAX		0xffdc
++
++/* Exposure control */
++#define IMX477_REG_EXPOSURE		0x0202
++#define IMX477_EXPOSURE_OFFSET		22
++#define IMX477_EXPOSURE_MIN		20
++#define IMX477_EXPOSURE_STEP		1
++#define IMX477_EXPOSURE_DEFAULT		0x640
++#define IMX477_EXPOSURE_MAX		(IMX477_FRAME_LENGTH_MAX - \
++					 IMX477_EXPOSURE_OFFSET)
++
++/* Analog gain control */
++#define IMX477_REG_ANALOG_GAIN		0x0204
++#define IMX477_ANA_GAIN_MIN		0
++#define IMX477_ANA_GAIN_MAX		978
++#define IMX477_ANA_GAIN_STEP		1
++#define IMX477_ANA_GAIN_DEFAULT		0x0
++
++/* Digital gain control */
++#define IMX477_REG_DIGITAL_GAIN		0x020e
++#define IMX477_DGTL_GAIN_MIN		0x0100
++#define IMX477_DGTL_GAIN_MAX		0xffff
++#define IMX477_DGTL_GAIN_DEFAULT	0x0100
++#define IMX477_DGTL_GAIN_STEP		1
++
++/* Test Pattern Control */
++#define IMX477_REG_TEST_PATTERN		0x0600
++#define IMX477_TEST_PATTERN_DISABLE	0
++#define IMX477_TEST_PATTERN_SOLID_COLOR	1
++#define IMX477_TEST_PATTERN_COLOR_BARS	2
++#define IMX477_TEST_PATTERN_GREY_COLOR	3
++#define IMX477_TEST_PATTERN_PN9		4
++
++/* Test pattern colour components */
++#define IMX477_REG_TEST_PATTERN_R	0x0602
++#define IMX477_REG_TEST_PATTERN_GR	0x0604
++#define IMX477_REG_TEST_PATTERN_B	0x0606
++#define IMX477_REG_TEST_PATTERN_GB	0x0608
++#define IMX477_TEST_PATTERN_COLOUR_MIN	0
++#define IMX477_TEST_PATTERN_COLOUR_MAX	0x0fff
++#define IMX477_TEST_PATTERN_COLOUR_STEP	1
++#define IMX477_TEST_PATTERN_R_DEFAULT	IMX477_TEST_PATTERN_COLOUR_MAX
++#define IMX477_TEST_PATTERN_GR_DEFAULT	0
++#define IMX477_TEST_PATTERN_B_DEFAULT	0
++#define IMX477_TEST_PATTERN_GB_DEFAULT	0
++
++/* Embedded metadata stream structure */
++#define IMX477_EMBEDDED_LINE_WIDTH 16384
++#define IMX477_NUM_EMBEDDED_LINES 1
++
++enum pad_types {
++	IMAGE_PAD,
++	METADATA_PAD,
++	NUM_PADS
++};
++
++/* IMX477 native and active pixel array size. */
++#define IMX477_NATIVE_WIDTH		4072U
++#define IMX477_NATIVE_HEIGHT		3176U
++#define IMX477_PIXEL_ARRAY_LEFT		8U
++#define IMX477_PIXEL_ARRAY_TOP		16U
++#define IMX477_PIXEL_ARRAY_WIDTH	4056U
++#define IMX477_PIXEL_ARRAY_HEIGHT	3040U
++
++struct imx477_reg {
++	u16 address;
++	u8 val;
++};
++
++struct imx477_reg_list {
++	unsigned int num_of_regs;
++	const struct imx477_reg *regs;
++};
++
++/* Mode : resolution and related config&values */
++struct imx477_mode {
++	/* Frame width */
++	unsigned int width;
++
++	/* Frame height */
++	unsigned int height;
++
++	/* H-timing in pixels */
++	unsigned int line_length_pix;
++
++	/* Analog crop rectangle. */
++	struct v4l2_rect crop;
++
++	/* Highest possible framerate. */
++	struct v4l2_fract timeperframe_min;
++
++	/* Default framerate. */
++	struct v4l2_fract timeperframe_default;
++
++	/* Default register values */
++	struct imx477_reg_list reg_list;
++};
++
++static const struct imx477_reg mode_common_regs[] = {
++	{0x0136, 0x18},
++	{0x0137, 0x00},
++	{0xe000, 0x00},
++	{0xe07a, 0x01},
++	{0x0808, 0x02},
++	{0x4ae9, 0x18},
++	{0x4aea, 0x08},
++	{0xf61c, 0x04},
++	{0xf61e, 0x04},
++	{0x4ae9, 0x21},
++	{0x4aea, 0x80},
++	{0x38a8, 0x1f},
++	{0x38a9, 0xff},
++	{0x38aa, 0x1f},
++	{0x38ab, 0xff},
++	{0x55d4, 0x00},
++	{0x55d5, 0x00},
++	{0x55d6, 0x07},
++	{0x55d7, 0xff},
++	{0x55e8, 0x07},
++	{0x55e9, 0xff},
++	{0x55ea, 0x00},
++	{0x55eb, 0x00},
++	{0x574c, 0x07},
++	{0x574d, 0xff},
++	{0x574e, 0x00},
++	{0x574f, 0x00},
++	{0x5754, 0x00},
++	{0x5755, 0x00},
++	{0x5756, 0x07},
++	{0x5757, 0xff},
++	{0x5973, 0x04},
++	{0x5974, 0x01},
++	{0x5d13, 0xc3},
++	{0x5d14, 0x58},
++	{0x5d15, 0xa3},
++	{0x5d16, 0x1d},
++	{0x5d17, 0x65},
++	{0x5d18, 0x8c},
++	{0x5d1a, 0x06},
++	{0x5d1b, 0xa9},
++	{0x5d1c, 0x45},
++	{0x5d1d, 0x3a},
++	{0x5d1e, 0xab},
++	{0x5d1f, 0x15},
++	{0x5d21, 0x0e},
++	{0x5d22, 0x52},
++	{0x5d23, 0xaa},
++	{0x5d24, 0x7d},
++	{0x5d25, 0x57},
++	{0x5d26, 0xa8},
++	{0x5d37, 0x5a},
++	{0x5d38, 0x5a},
++	{0x5d77, 0x7f},
++	{0x7b75, 0x0e},
++	{0x7b76, 0x0b},
++	{0x7b77, 0x08},
++	{0x7b78, 0x0a},
++	{0x7b79, 0x47},
++	{0x7b7c, 0x00},
++	{0x7b7d, 0x00},
++	{0x8d1f, 0x00},
++	{0x8d27, 0x00},
++	{0x9004, 0x03},
++	{0x9200, 0x50},
++	{0x9201, 0x6c},
++	{0x9202, 0x71},
++	{0x9203, 0x00},
++	{0x9204, 0x71},
++	{0x9205, 0x01},
++	{0x9371, 0x6a},
++	{0x9373, 0x6a},
++	{0x9375, 0x64},
++	{0x991a, 0x00},
++	{0x996b, 0x8c},
++	{0x996c, 0x64},
++	{0x996d, 0x50},
++	{0x9a4c, 0x0d},
++	{0x9a4d, 0x0d},
++	{0xa001, 0x0a},
++	{0xa003, 0x0a},
++	{0xa005, 0x0a},
++	{0xa006, 0x01},
++	{0xa007, 0xc0},
++	{0xa009, 0xc0},
++	{0x3d8a, 0x01},
++	{0x4421, 0x04},
++	{0x7b3b, 0x01},
++	{0x7b4c, 0x00},
++	{0x9905, 0x00},
++	{0x9907, 0x00},
++	{0x9909, 0x00},
++	{0x990b, 0x00},
++	{0x9944, 0x3c},
++	{0x9947, 0x3c},
++	{0x994a, 0x8c},
++	{0x994b, 0x50},
++	{0x994c, 0x1b},
++	{0x994d, 0x8c},
++	{0x994e, 0x50},
++	{0x994f, 0x1b},
++	{0x9950, 0x8c},
++	{0x9951, 0x1b},
++	{0x9952, 0x0a},
++	{0x9953, 0x8c},
++	{0x9954, 0x1b},
++	{0x9955, 0x0a},
++	{0x9a13, 0x04},
++	{0x9a14, 0x04},
++	{0x9a19, 0x00},
++	{0x9a1c, 0x04},
++	{0x9a1d, 0x04},
++	{0x9a26, 0x05},
++	{0x9a27, 0x05},
++	{0x9a2c, 0x01},
++	{0x9a2d, 0x03},
++	{0x9a2f, 0x05},
++	{0x9a30, 0x05},
++	{0x9a41, 0x00},
++	{0x9a46, 0x00},
++	{0x9a47, 0x00},
++	{0x9c17, 0x35},
++	{0x9c1d, 0x31},
++	{0x9c29, 0x50},
++	{0x9c3b, 0x2f},
++	{0x9c41, 0x6b},
++	{0x9c47, 0x2d},
++	{0x9c4d, 0x40},
++	{0x9c6b, 0x00},
++	{0x9c71, 0xc8},
++	{0x9c73, 0x32},
++	{0x9c75, 0x04},
++	{0x9c7d, 0x2d},
++	{0x9c83, 0x40},
++	{0x9c94, 0x3f},
++	{0x9c95, 0x3f},
++	{0x9c96, 0x3f},
++	{0x9c97, 0x00},
++	{0x9c98, 0x00},
++	{0x9c99, 0x00},
++	{0x9c9a, 0x3f},
++	{0x9c9b, 0x3f},
++	{0x9c9c, 0x3f},
++	{0x9ca0, 0x0f},
++	{0x9ca1, 0x0f},
++	{0x9ca2, 0x0f},
++	{0x9ca3, 0x00},
++	{0x9ca4, 0x00},
++	{0x9ca5, 0x00},
++	{0x9ca6, 0x1e},
++	{0x9ca7, 0x1e},
++	{0x9ca8, 0x1e},
++	{0x9ca9, 0x00},
++	{0x9caa, 0x00},
++	{0x9cab, 0x00},
++	{0x9cac, 0x09},
++	{0x9cad, 0x09},
++	{0x9cae, 0x09},
++	{0x9cbd, 0x50},
++	{0x9cbf, 0x50},
++	{0x9cc1, 0x50},
++	{0x9cc3, 0x40},
++	{0x9cc5, 0x40},
++	{0x9cc7, 0x40},
++	{0x9cc9, 0x0a},
++	{0x9ccb, 0x0a},
++	{0x9ccd, 0x0a},
++	{0x9d17, 0x35},
++	{0x9d1d, 0x31},
++	{0x9d29, 0x50},
++	{0x9d3b, 0x2f},
++	{0x9d41, 0x6b},
++	{0x9d47, 0x42},
++	{0x9d4d, 0x5a},
++	{0x9d6b, 0x00},
++	{0x9d71, 0xc8},
++	{0x9d73, 0x32},
++	{0x9d75, 0x04},
++	{0x9d7d, 0x42},
++	{0x9d83, 0x5a},
++	{0x9d94, 0x3f},
++	{0x9d95, 0x3f},
++	{0x9d96, 0x3f},
++	{0x9d97, 0x00},
++	{0x9d98, 0x00},
++	{0x9d99, 0x00},
++	{0x9d9a, 0x3f},
++	{0x9d9b, 0x3f},
++	{0x9d9c, 0x3f},
++	{0x9d9d, 0x1f},
++	{0x9d9e, 0x1f},
++	{0x9d9f, 0x1f},
++	{0x9da0, 0x0f},
++	{0x9da1, 0x0f},
++	{0x9da2, 0x0f},
++	{0x9da3, 0x00},
++	{0x9da4, 0x00},
++	{0x9da5, 0x00},
++	{0x9da6, 0x1e},
++	{0x9da7, 0x1e},
++	{0x9da8, 0x1e},
++	{0x9da9, 0x00},
++	{0x9daa, 0x00},
++	{0x9dab, 0x00},
++	{0x9dac, 0x09},
++	{0x9dad, 0x09},
++	{0x9dae, 0x09},
++	{0x9dc9, 0x0a},
++	{0x9dcb, 0x0a},
++	{0x9dcd, 0x0a},
++	{0x9e17, 0x35},
++	{0x9e1d, 0x31},
++	{0x9e29, 0x50},
++	{0x9e3b, 0x2f},
++	{0x9e41, 0x6b},
++	{0x9e47, 0x2d},
++	{0x9e4d, 0x40},
++	{0x9e6b, 0x00},
++	{0x9e71, 0xc8},
++	{0x9e73, 0x32},
++	{0x9e75, 0x04},
++	{0x9e94, 0x0f},
++	{0x9e95, 0x0f},
++	{0x9e96, 0x0f},
++	{0x9e97, 0x00},
++	{0x9e98, 0x00},
++	{0x9e99, 0x00},
++	{0x9ea0, 0x0f},
++	{0x9ea1, 0x0f},
++	{0x9ea2, 0x0f},
++	{0x9ea3, 0x00},
++	{0x9ea4, 0x00},
++	{0x9ea5, 0x00},
++	{0x9ea6, 0x3f},
++	{0x9ea7, 0x3f},
++	{0x9ea8, 0x3f},
++	{0x9ea9, 0x00},
++	{0x9eaa, 0x00},
++	{0x9eab, 0x00},
++	{0x9eac, 0x09},
++	{0x9ead, 0x09},
++	{0x9eae, 0x09},
++	{0x9ec9, 0x0a},
++	{0x9ecb, 0x0a},
++	{0x9ecd, 0x0a},
++	{0x9f17, 0x35},
++	{0x9f1d, 0x31},
++	{0x9f29, 0x50},
++	{0x9f3b, 0x2f},
++	{0x9f41, 0x6b},
++	{0x9f47, 0x42},
++	{0x9f4d, 0x5a},
++	{0x9f6b, 0x00},
++	{0x9f71, 0xc8},
++	{0x9f73, 0x32},
++	{0x9f75, 0x04},
++	{0x9f94, 0x0f},
++	{0x9f95, 0x0f},
++	{0x9f96, 0x0f},
++	{0x9f97, 0x00},
++	{0x9f98, 0x00},
++	{0x9f99, 0x00},
++	{0x9f9a, 0x2f},
++	{0x9f9b, 0x2f},
++	{0x9f9c, 0x2f},
++	{0x9f9d, 0x00},
++	{0x9f9e, 0x00},
++	{0x9f9f, 0x00},
++	{0x9fa0, 0x0f},
++	{0x9fa1, 0x0f},
++	{0x9fa2, 0x0f},
++	{0x9fa3, 0x00},
++	{0x9fa4, 0x00},
++	{0x9fa5, 0x00},
++	{0x9fa6, 0x1e},
++	{0x9fa7, 0x1e},
++	{0x9fa8, 0x1e},
++	{0x9fa9, 0x00},
++	{0x9faa, 0x00},
++	{0x9fab, 0x00},
++	{0x9fac, 0x09},
++	{0x9fad, 0x09},
++	{0x9fae, 0x09},
++	{0x9fc9, 0x0a},
++	{0x9fcb, 0x0a},
++	{0x9fcd, 0x0a},
++	{0xa14b, 0xff},
++	{0xa151, 0x0c},
++	{0xa153, 0x50},
++	{0xa155, 0x02},
++	{0xa157, 0x00},
++	{0xa1ad, 0xff},
++	{0xa1b3, 0x0c},
++	{0xa1b5, 0x50},
++	{0xa1b9, 0x00},
++	{0xa24b, 0xff},
++	{0xa257, 0x00},
++	{0xa2ad, 0xff},
++	{0xa2b9, 0x00},
++	{0xb21f, 0x04},
++	{0xb35c, 0x00},
++	{0xb35e, 0x08},
++	{0x0112, 0x0c},
++	{0x0113, 0x0c},
++	{0x0114, 0x01},
++	{0x0350, 0x00},
++	{0xbcf1, 0x02},
++	{0x3ff9, 0x01},
++};
++
++/* 12 mpix 10fps */
++static const struct imx477_reg mode_4056x3040_regs[] = {
++	{0x0342, 0x5d},
++	{0x0343, 0xc0},
++	{0x0344, 0x00},
++	{0x0345, 0x00},
++	{0x0346, 0x00},
++	{0x0347, 0x00},
++	{0x0348, 0x0f},
++	{0x0349, 0xd7},
++	{0x034a, 0x0b},
++	{0x034b, 0xdf},
++	{0x00e3, 0x00},
++	{0x00e4, 0x00},
++	{0x00fc, 0x0a},
++	{0x00fd, 0x0a},
++	{0x00fe, 0x0a},
++	{0x00ff, 0x0a},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0381, 0x01},
++	{0x0383, 0x01},
++	{0x0385, 0x01},
++	{0x0387, 0x01},
++	{0x0900, 0x00},
++	{0x0901, 0x11},
++	{0x0902, 0x02},
++	{0x3140, 0x02},
++	{0x3c00, 0x00},
++	{0x3c01, 0x03},
++	{0x3c02, 0xa2},
++	{0x3f0d, 0x01},
++	{0x5748, 0x07},
++	{0x5749, 0xff},
++	{0x574a, 0x00},
++	{0x574b, 0x00},
++	{0x7b75, 0x0a},
++	{0x7b76, 0x0c},
++	{0x7b77, 0x07},
++	{0x7b78, 0x06},
++	{0x7b79, 0x3c},
++	{0x7b53, 0x01},
++	{0x9369, 0x5a},
++	{0x936b, 0x55},
++	{0x936d, 0x28},
++	{0x9304, 0x00},
++	{0x9305, 0x00},
++	{0x9e9a, 0x2f},
++	{0x9e9b, 0x2f},
++	{0x9e9c, 0x2f},
++	{0x9e9d, 0x00},
++	{0x9e9e, 0x00},
++	{0x9e9f, 0x00},
++	{0xa2a9, 0x60},
++	{0xa2b7, 0x00},
++	{0x0401, 0x00},
++	{0x0404, 0x00},
++	{0x0405, 0x10},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x0f},
++	{0x040d, 0xd8},
++	{0x040e, 0x0b},
++	{0x040f, 0xe0},
++	{0x034c, 0x0f},
++	{0x034d, 0xd8},
++	{0x034e, 0x0b},
++	{0x034f, 0xe0},
++	{0x0301, 0x05},
++	{0x0303, 0x02},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x5e},
++	{0x0309, 0x0c},
++	{0x030b, 0x02},
++	{0x030d, 0x02},
++	{0x030e, 0x00},
++	{0x030f, 0x96},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0x08},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x080a, 0x00},
++	{0x080b, 0x7f},
++	{0x080c, 0x00},
++	{0x080d, 0x4f},
++	{0x080e, 0x00},
++	{0x080f, 0x77},
++	{0x0810, 0x00},
++	{0x0811, 0x5f},
++	{0x0812, 0x00},
++	{0x0813, 0x57},
++	{0x0814, 0x00},
++	{0x0815, 0x4f},
++	{0x0816, 0x01},
++	{0x0817, 0x27},
++	{0x0818, 0x00},
++	{0x0819, 0x3f},
++	{0xe04c, 0x00},
++	{0xe04d, 0x7f},
++	{0xe04e, 0x00},
++	{0xe04f, 0x1f},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3f50, 0x00},
++	{0x3f56, 0x02},
++	{0x3f57, 0xae},
++};
++
++/* 2x2 binned. 40fps */
++static const struct imx477_reg mode_2028x1520_regs[] = {
++	{0x0342, 0x31},
++	{0x0343, 0xc4},
++	{0x0344, 0x00},
++	{0x0345, 0x00},
++	{0x0346, 0x00},
++	{0x0347, 0x00},
++	{0x0348, 0x0f},
++	{0x0349, 0xd7},
++	{0x034a, 0x0b},
++	{0x034b, 0xdf},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0381, 0x01},
++	{0x0383, 0x01},
++	{0x0385, 0x01},
++	{0x0387, 0x01},
++	{0x0900, 0x01},
++	{0x0901, 0x12},
++	{0x0902, 0x02},
++	{0x3140, 0x02},
++	{0x3c00, 0x00},
++	{0x3c01, 0x03},
++	{0x3c02, 0xa2},
++	{0x3f0d, 0x01},
++	{0x5748, 0x07},
++	{0x5749, 0xff},
++	{0x574a, 0x00},
++	{0x574b, 0x00},
++	{0x7b53, 0x01},
++	{0x9369, 0x73},
++	{0x936b, 0x64},
++	{0x936d, 0x5f},
++	{0x9304, 0x00},
++	{0x9305, 0x00},
++	{0x9e9a, 0x2f},
++	{0x9e9b, 0x2f},
++	{0x9e9c, 0x2f},
++	{0x9e9d, 0x00},
++	{0x9e9e, 0x00},
++	{0x9e9f, 0x00},
++	{0xa2a9, 0x60},
++	{0xa2b7, 0x00},
++	{0x0401, 0x01},
++	{0x0404, 0x00},
++	{0x0405, 0x20},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x0f},
++	{0x040d, 0xd8},
++	{0x040e, 0x0b},
++	{0x040f, 0xe0},
++	{0x034c, 0x07},
++	{0x034d, 0xec},
++	{0x034e, 0x05},
++	{0x034f, 0xf0},
++	{0x0301, 0x05},
++	{0x0303, 0x02},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x5e},
++	{0x0309, 0x0c},
++	{0x030b, 0x02},
++	{0x030d, 0x02},
++	{0x030e, 0x00},
++	{0x030f, 0x96},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0x08},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x080a, 0x00},
++	{0x080b, 0x7f},
++	{0x080c, 0x00},
++	{0x080d, 0x4f},
++	{0x080e, 0x00},
++	{0x080f, 0x77},
++	{0x0810, 0x00},
++	{0x0811, 0x5f},
++	{0x0812, 0x00},
++	{0x0813, 0x57},
++	{0x0814, 0x00},
++	{0x0815, 0x4f},
++	{0x0816, 0x01},
++	{0x0817, 0x27},
++	{0x0818, 0x00},
++	{0x0819, 0x3f},
++	{0xe04c, 0x00},
++	{0xe04d, 0x7f},
++	{0xe04e, 0x00},
++	{0xe04f, 0x1f},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3f50, 0x00},
++	{0x3f56, 0x01},
++	{0x3f57, 0x6c},
++};
++
++/* 1080p cropped mode */
++static const struct imx477_reg mode_2028x1080_regs[] = {
++	{0x0342, 0x31},
++	{0x0343, 0xc4},
++	{0x0344, 0x00},
++	{0x0345, 0x00},
++	{0x0346, 0x01},
++	{0x0347, 0xb8},
++	{0x0348, 0x0f},
++	{0x0349, 0xd7},
++	{0x034a, 0x0a},
++	{0x034b, 0x27},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0381, 0x01},
++	{0x0383, 0x01},
++	{0x0385, 0x01},
++	{0x0387, 0x01},
++	{0x0900, 0x01},
++	{0x0901, 0x12},
++	{0x0902, 0x02},
++	{0x3140, 0x02},
++	{0x3c00, 0x00},
++	{0x3c01, 0x03},
++	{0x3c02, 0xa2},
++	{0x3f0d, 0x01},
++	{0x5748, 0x07},
++	{0x5749, 0xff},
++	{0x574a, 0x00},
++	{0x574b, 0x00},
++	{0x7b53, 0x01},
++	{0x9369, 0x73},
++	{0x936b, 0x64},
++	{0x936d, 0x5f},
++	{0x9304, 0x00},
++	{0x9305, 0x00},
++	{0x9e9a, 0x2f},
++	{0x9e9b, 0x2f},
++	{0x9e9c, 0x2f},
++	{0x9e9d, 0x00},
++	{0x9e9e, 0x00},
++	{0x9e9f, 0x00},
++	{0xa2a9, 0x60},
++	{0xa2b7, 0x00},
++	{0x0401, 0x01},
++	{0x0404, 0x00},
++	{0x0405, 0x20},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x0f},
++	{0x040d, 0xd8},
++	{0x040e, 0x04},
++	{0x040f, 0x38},
++	{0x034c, 0x07},
++	{0x034d, 0xec},
++	{0x034e, 0x04},
++	{0x034f, 0x38},
++	{0x0301, 0x05},
++	{0x0303, 0x02},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x5e},
++	{0x0309, 0x0c},
++	{0x030b, 0x02},
++	{0x030d, 0x02},
++	{0x030e, 0x00},
++	{0x030f, 0x96},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0x08},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x080a, 0x00},
++	{0x080b, 0x7f},
++	{0x080c, 0x00},
++	{0x080d, 0x4f},
++	{0x080e, 0x00},
++	{0x080f, 0x77},
++	{0x0810, 0x00},
++	{0x0811, 0x5f},
++	{0x0812, 0x00},
++	{0x0813, 0x57},
++	{0x0814, 0x00},
++	{0x0815, 0x4f},
++	{0x0816, 0x01},
++	{0x0817, 0x27},
++	{0x0818, 0x00},
++	{0x0819, 0x3f},
++	{0xe04c, 0x00},
++	{0xe04d, 0x7f},
++	{0xe04e, 0x00},
++	{0xe04f, 0x1f},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3f50, 0x00},
++	{0x3f56, 0x01},
++	{0x3f57, 0x6c},
++};
++
++/* 4x4 binned. 120fps */
++static const struct imx477_reg mode_1012x760_regs[] = {
++	{0x420b, 0x01},
++	{0x990c, 0x00},
++	{0x990d, 0x08},
++	{0x9956, 0x8c},
++	{0x9957, 0x64},
++	{0x9958, 0x50},
++	{0x9a48, 0x06},
++	{0x9a49, 0x06},
++	{0x9a4a, 0x06},
++	{0x9a4b, 0x06},
++	{0x9a4c, 0x06},
++	{0x9a4d, 0x06},
++	{0x0112, 0x0a},
++	{0x0113, 0x0a},
++	{0x0114, 0x01},
++	{0x0342, 0x14},
++	{0x0343, 0x60},
++	{0x0344, 0x00},
++	{0x0345, 0x00},
++	{0x0346, 0x00},
++	{0x0347, 0x00},
++	{0x0348, 0x0f},
++	{0x0349, 0xd3},
++	{0x034a, 0x0b},
++	{0x034b, 0xdf},
++	{0x00e3, 0x00},
++	{0x00e4, 0x00},
++	{0x00fc, 0x0a},
++	{0x00fd, 0x0a},
++	{0x00fe, 0x0a},
++	{0x00ff, 0x0a},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0381, 0x01},
++	{0x0383, 0x01},
++	{0x0385, 0x01},
++	{0x0387, 0x03},
++	{0x0900, 0x01},
++	{0x0901, 0x22},
++	{0x0902, 0x02},
++	{0x3140, 0x02},
++	{0x3c00, 0x00},
++	{0x3c01, 0x01},
++	{0x3c02, 0x9c},
++	{0x3f0d, 0x00},
++	{0x5748, 0x00},
++	{0x5749, 0x00},
++	{0x574a, 0x00},
++	{0x574b, 0xa4},
++	{0x7b75, 0x0e},
++	{0x7b76, 0x09},
++	{0x7b77, 0x08},
++	{0x7b78, 0x06},
++	{0x7b79, 0x34},
++	{0x7b53, 0x00},
++	{0x9369, 0x73},
++	{0x936b, 0x64},
++	{0x936d, 0x5f},
++	{0x9304, 0x03},
++	{0x9305, 0x80},
++	{0x9e9a, 0x3f},
++	{0x9e9b, 0x3f},
++	{0x9e9c, 0x3f},
++	{0x9e9d, 0x27},
++	{0x9e9e, 0x27},
++	{0x9e9f, 0x27},
++	{0xa2a9, 0x27},
++	{0xa2b7, 0x03},
++	{0x0401, 0x01},
++	{0x0404, 0x00},
++	{0x0405, 0x20},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x07},
++	{0x040d, 0xea},
++	{0x040e, 0x02},
++	{0x040f, 0xf8},
++	{0x034c, 0x03},
++	{0x034d, 0xf4},
++	{0x034e, 0x02},
++	{0x034f, 0xf8},
++	{0x0301, 0x05},
++	{0x0303, 0x02},
++	{0x0305, 0x02},
++	{0x0306, 0x00},
++	{0x0307, 0xaf},
++	{0x0309, 0x0a},
++	{0x030b, 0x02},
++	{0x030d, 0x02},
++	{0x030e, 0x00},
++	{0x030f, 0x96},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0x08},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x080a, 0x00},
++	{0x080b, 0x6f},
++	{0x080c, 0x00},
++	{0x080d, 0x3f},
++	{0x080e, 0x00},
++	{0x080f, 0xff},
++	{0x0810, 0x00},
++	{0x0811, 0x4f},
++	{0x0812, 0x00},
++	{0x0813, 0x47},
++	{0x0814, 0x00},
++	{0x0815, 0x37},
++	{0x0816, 0x00},
++	{0x0817, 0xe7},
++	{0x0818, 0x00},
++	{0x0819, 0x2f},
++	{0xe04c, 0x00},
++	{0xe04d, 0x5f},
++	{0xe04e, 0x00},
++	{0xe04f, 0x1f},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3f50, 0x00},
++	{0x3f56, 0x00},
++	{0x3f57, 0x96},
++};
++
++/* Mode configs */
++static const struct imx477_mode supported_modes_12bit[] = {
++	{
++		/* 12MPix 10fps mode */
++		.width = 4056,
++		.height = 3040,
++		.line_length_pix = 0x5dc0,
++		.crop = {
++			.left = 0,
++			.top = 0,
++			.width = 4056,
++			.height = 3040,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 1000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 1000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_4056x3040_regs),
++			.regs = mode_4056x3040_regs,
++		},
++	},
++	{
++		/* 2x2 binned 40fps mode */
++		.width = 2028,
++		.height = 1520,
++		.line_length_pix = 0x31c4,
++		.crop = {
++			.left = 0,
++			.top = 0,
++			.width = 4056,
++			.height = 3040,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 4000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 3000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_2028x1520_regs),
++			.regs = mode_2028x1520_regs,
++		},
++	},
++	{
++		/* 1080p 50fps cropped mode */
++		.width = 2028,
++		.height = 1080,
++		.line_length_pix = 0x31c4,
++		.crop = {
++			.left = 0,
++			.top = 440,
++			.width = 4056,
++			.height = 2600,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 5000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 3000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_2028x1080_regs),
++			.regs = mode_2028x1080_regs,
++		},
++	}
++};
++
++static const struct imx477_mode supported_modes_10bit[] = {
++	{
++		/* 720P 120fps. 4x4 binned */
++		.width = 1012,
++		.height = 760,
++		.line_length_pix = 0x1460,
++		.crop = {
++			/*
++			 * FIXME: the analog crop rectangle is actually
++			 * programmed with a horizontal displacement of 0
++			 * pixels, not 4. It gets shrunk after going through
++			 * the scaler. Move this information to the compose
++			 * rectangle once the driver is expanded to represent
++			 * its processing blocks with multiple subdevs.
++			 */
++			.left = 4,
++			.top = 0,
++			.width = 4052,
++			.height = 3040,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 12000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 60000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_1012x760_regs),
++			.regs = mode_1012x760_regs,
++		}
++	}
++};
++
++/*
++ * The supported formats.
++ * This table MUST contain 4 entries per format, to cover the various flip
++ * combinations in the order
++ * - no flip
++ * - h flip
++ * - v flip
++ * - h&v flips
++ */
++static const u32 codes[] = {
++	/* 12-bit modes. */
++	MEDIA_BUS_FMT_SRGGB12_1X12,
++	MEDIA_BUS_FMT_SGRBG12_1X12,
++	MEDIA_BUS_FMT_SGBRG12_1X12,
++	MEDIA_BUS_FMT_SBGGR12_1X12,
++	/* 10-bit modes. */
++	MEDIA_BUS_FMT_SRGGB10_1X10,
++	MEDIA_BUS_FMT_SGRBG10_1X10,
++	MEDIA_BUS_FMT_SGBRG10_1X10,
++	MEDIA_BUS_FMT_SBGGR10_1X10,
++};
++
++static const char * const imx477_test_pattern_menu[] = {
++	"Disabled",
++	"Color Bars",
++	"Solid Color",
++	"Grey Color Bars",
++	"PN9"
++};
++
++static const int imx477_test_pattern_val[] = {
++	IMX477_TEST_PATTERN_DISABLE,
++	IMX477_TEST_PATTERN_COLOR_BARS,
++	IMX477_TEST_PATTERN_SOLID_COLOR,
++	IMX477_TEST_PATTERN_GREY_COLOR,
++	IMX477_TEST_PATTERN_PN9,
++};
++
++/* regulator supplies */
++static const char * const imx477_supply_name[] = {
++	/* Supplies can be enabled in any order */
++	"VANA",  /* Analog (2.8V) supply */
++	"VDIG",  /* Digital Core (1.05V) supply */
++	"VDDL",  /* IF (1.8V) supply */
++};
++
++#define IMX477_NUM_SUPPLIES ARRAY_SIZE(imx477_supply_name)
++
++/*
++ * Initialisation delay between XCLR low->high and the moment when the sensor
++ * can start capture (i.e. can leave software standby), given by T7 in the
++ * datasheet is 8ms.  This does include I2C setup time as well.
++ *
++ * Note, that delay between XCLR low->high and reading the CCI ID register (T6
++ * in the datasheet) is much smaller - 600us.
++ */
++#define IMX477_XCLR_MIN_DELAY_US	8000
++#define IMX477_XCLR_DELAY_RANGE_US	1000
++
++struct imx477 {
++	struct v4l2_subdev sd;
++	struct media_pad pad[NUM_PADS];
++
++	struct v4l2_mbus_framefmt fmt;
++
++	struct clk *xclk;
++	u32 xclk_freq;
++
++	struct gpio_desc *reset_gpio;
++	struct regulator_bulk_data supplies[IMX477_NUM_SUPPLIES];
++
++	struct v4l2_ctrl_handler ctrl_handler;
++	/* V4L2 Controls */
++	struct v4l2_ctrl *pixel_rate;
++	struct v4l2_ctrl *exposure;
++	struct v4l2_ctrl *vflip;
++	struct v4l2_ctrl *hflip;
++	struct v4l2_ctrl *vblank;
++	struct v4l2_ctrl *hblank;
++
++	/* Current mode */
++	const struct imx477_mode *mode;
++
++	/*
++	 * Mutex for serialized access:
++	 * Protect sensor module set pad format and start/stop streaming safely.
++	 */
++	struct mutex mutex;
++
++	/* Streaming on/off */
++	bool streaming;
++
++	/* Rewrite common registers on stream on? */
++	bool common_regs_written;
++};
++
++static inline struct imx477 *to_imx477(struct v4l2_subdev *_sd)
++{
++	return container_of(_sd, struct imx477, sd);
++}
++
++static inline void get_mode_table(unsigned int code,
++				  const struct imx477_mode **mode_list,
++				  unsigned int *num_modes)
++{
++	switch (code) {
++	/* 12-bit */
++	case MEDIA_BUS_FMT_SRGGB12_1X12:
++	case MEDIA_BUS_FMT_SGRBG12_1X12:
++	case MEDIA_BUS_FMT_SGBRG12_1X12:
++	case MEDIA_BUS_FMT_SBGGR12_1X12:
++		*mode_list = supported_modes_12bit;
++		*num_modes = ARRAY_SIZE(supported_modes_12bit);
++		break;
++	/* 10-bit */
++	case MEDIA_BUS_FMT_SRGGB10_1X10:
++	case MEDIA_BUS_FMT_SGRBG10_1X10:
++	case MEDIA_BUS_FMT_SGBRG10_1X10:
++	case MEDIA_BUS_FMT_SBGGR10_1X10:
++		*mode_list = supported_modes_10bit;
++		*num_modes = ARRAY_SIZE(supported_modes_10bit);
++		break;
++	default:
++		*mode_list = NULL;
++		*num_modes = 0;
++	}
++}
++
++/* Read registers up to 2 at a time */
++static int imx477_read_reg(struct imx477 *imx477, u16 reg, u32 len, u32 *val)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	struct i2c_msg msgs[2];
++	u8 addr_buf[2] = { reg >> 8, reg & 0xff };
++	u8 data_buf[4] = { 0, };
++	int ret;
++
++	if (len > 4)
++		return -EINVAL;
++
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = ARRAY_SIZE(addr_buf);
++	msgs[0].buf = addr_buf;
++
++	/* Read data from register */
++	msgs[1].addr = client->addr;
++	msgs[1].flags = I2C_M_RD;
++	msgs[1].len = len;
++	msgs[1].buf = &data_buf[4 - len];
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	*val = get_unaligned_be32(data_buf);
++
++	return 0;
++}
++
++/* Write registers up to 2 at a time */
++static int imx477_write_reg(struct imx477 *imx477, u16 reg, u32 len, u32 val)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	u8 buf[6];
++
++	if (len > 4)
++		return -EINVAL;
++
++	put_unaligned_be16(reg, buf);
++	put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
++	if (i2c_master_send(client, buf, len + 2) != len + 2)
++		return -EIO;
++
++	return 0;
++}
++
++/* Write a list of registers */
++static int imx477_write_regs(struct imx477 *imx477,
++			     const struct imx477_reg *regs, u32 len)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	unsigned int i;
++	int ret;
++
++	for (i = 0; i < len; i++) {
++		ret = imx477_write_reg(imx477, regs[i].address, 1, regs[i].val);
++		if (ret) {
++			dev_err_ratelimited(&client->dev,
++					    "Failed to write reg 0x%4.4x. error = %d\n",
++					    regs[i].address, ret);
++
++			return ret;
++		}
++	}
++
++	return 0;
++}
++
++/* Get bayer order based on flip setting. */
++static u32 imx477_get_format_code(struct imx477 *imx477, u32 code)
++{
++	unsigned int i;
++
++	lockdep_assert_held(&imx477->mutex);
++
++	for (i = 0; i < ARRAY_SIZE(codes); i++)
++		if (codes[i] == code)
++			break;
++
++	if (i >= ARRAY_SIZE(codes))
++		i = 0;
++
++	i = (i & ~3) | (imx477->vflip->val ? 2 : 0) |
++	    (imx477->hflip->val ? 1 : 0);
++
++	return codes[i];
++}
++
++static void imx477_set_default_format(struct imx477 *imx477)
++{
++	struct v4l2_mbus_framefmt *fmt = &imx477->fmt;
++
++	/* Set default mode to max resolution */
++	imx477->mode = &supported_modes_12bit[0];
++
++	fmt->code = MEDIA_BUS_FMT_SRGGB12_1X12;
++	fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
++	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
++							  fmt->colorspace,
++							  fmt->ycbcr_enc);
++	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
++	fmt->width = imx477->mode->width;
++	fmt->height = imx477->mode->height;
++	fmt->field = V4L2_FIELD_NONE;
++}
++
++static int imx477_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct imx477 *imx477 = to_imx477(sd);
++	struct v4l2_mbus_framefmt *try_fmt_img =
++		v4l2_subdev_get_try_format(sd, fh->pad, IMAGE_PAD);
++	struct v4l2_mbus_framefmt *try_fmt_meta =
++		v4l2_subdev_get_try_format(sd, fh->pad, METADATA_PAD);
++	struct v4l2_rect *try_crop;
++
++	mutex_lock(&imx477->mutex);
++
++	/* Initialize try_fmt for the image pad */
++	try_fmt_img->width = supported_modes_12bit[0].width;
++	try_fmt_img->height = supported_modes_12bit[0].height;
++	try_fmt_img->code = imx477_get_format_code(imx477,
++						   MEDIA_BUS_FMT_SRGGB12_1X12);
++	try_fmt_img->field = V4L2_FIELD_NONE;
++
++	/* Initialize try_fmt for the embedded metadata pad */
++	try_fmt_meta->width = IMX477_EMBEDDED_LINE_WIDTH;
++	try_fmt_meta->height = IMX477_NUM_EMBEDDED_LINES;
++	try_fmt_meta->code = MEDIA_BUS_FMT_SENSOR_DATA;
++	try_fmt_meta->field = V4L2_FIELD_NONE;
++
++	/* Initialize try_crop */
++	try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, IMAGE_PAD);
++	try_crop->left = IMX477_PIXEL_ARRAY_LEFT;
++	try_crop->top = IMX477_PIXEL_ARRAY_TOP;
++	try_crop->width = IMX477_PIXEL_ARRAY_WIDTH;
++	try_crop->height = IMX477_PIXEL_ARRAY_HEIGHT;
++
++	mutex_unlock(&imx477->mutex);
++
++	return 0;
++}
++
++static int imx477_set_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct imx477 *imx477 =
++		container_of(ctrl->handler, struct imx477, ctrl_handler);
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	int ret = 0;
++
++	if (ctrl->id == V4L2_CID_VBLANK) {
++		int exposure_max, exposure_def;
++
++		/* Update max exposure while meeting expected vblanking */
++		exposure_max = imx477->mode->height + ctrl->val -
++							IMX477_EXPOSURE_OFFSET;
++		exposure_def = min(exposure_max, imx477->exposure->val);
++		__v4l2_ctrl_modify_range(imx477->exposure,
++					 imx477->exposure->minimum,
++					 exposure_max, imx477->exposure->step,
++					 exposure_def);
++	}
++
++	/*
++	 * Applying V4L2 control value only happens
++	 * when power is up for streaming
++	 */
++	if (pm_runtime_get_if_in_use(&client->dev) == 0)
++		return 0;
++
++	switch (ctrl->id) {
++	case V4L2_CID_ANALOGUE_GAIN:
++		ret = imx477_write_reg(imx477, IMX477_REG_ANALOG_GAIN,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_EXPOSURE:
++		ret = imx477_write_reg(imx477, IMX477_REG_EXPOSURE,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_DIGITAL_GAIN:
++		ret = imx477_write_reg(imx477, IMX477_REG_DIGITAL_GAIN,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN:
++		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN,
++				       IMX477_REG_VALUE_16BIT,
++				       imx477_test_pattern_val[ctrl->val]);
++		break;
++	case V4L2_CID_TEST_PATTERN_RED:
++		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_R,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN_GREENR:
++		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_GR,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN_BLUE:
++		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_B,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN_GREENB:
++		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_GB,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_HFLIP:
++	case V4L2_CID_VFLIP:
++		ret = imx477_write_reg(imx477, IMX477_REG_ORIENTATION, 1,
++				       imx477->hflip->val |
++				       imx477->vflip->val << 1);
++		break;
++	case V4L2_CID_VBLANK:
++		ret = imx477_write_reg(imx477, IMX477_REG_FRAME_LENGTH,
++				       IMX477_REG_VALUE_16BIT,
++				       imx477->mode->height + ctrl->val);
++		break;
++	default:
++		dev_info(&client->dev,
++			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
++			 ctrl->id, ctrl->val);
++		ret = -EINVAL;
++		break;
++	}
++
++	pm_runtime_put(&client->dev);
++
++	return ret;
++}
++
++static const struct v4l2_ctrl_ops imx477_ctrl_ops = {
++	.s_ctrl = imx477_set_ctrl,
++};
++
++static int imx477_enum_mbus_code(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_mbus_code_enum *code)
++{
++	struct imx477 *imx477 = to_imx477(sd);
++
++	if (code->pad >= NUM_PADS)
++		return -EINVAL;
++
++	if (code->pad == IMAGE_PAD) {
++		if (code->index >= (ARRAY_SIZE(codes) / 4))
++			return -EINVAL;
++
++		code->code = imx477_get_format_code(imx477,
++						    codes[code->index * 4]);
++	} else {
++		if (code->index > 0)
++			return -EINVAL;
++
++		code->code = MEDIA_BUS_FMT_SENSOR_DATA;
++	}
++
++	return 0;
++}
++
++static int imx477_enum_frame_size(struct v4l2_subdev *sd,
++				  struct v4l2_subdev_pad_config *cfg,
++				  struct v4l2_subdev_frame_size_enum *fse)
++{
++	struct imx477 *imx477 = to_imx477(sd);
++
++	if (fse->pad >= NUM_PADS)
++		return -EINVAL;
++
++	if (fse->pad == IMAGE_PAD) {
++		const struct imx477_mode *mode_list;
++		unsigned int num_modes;
++
++		get_mode_table(fse->code, &mode_list, &num_modes);
++
++		if (fse->index >= num_modes)
++			return -EINVAL;
++
++		if (fse->code != imx477_get_format_code(imx477, fse->code))
++			return -EINVAL;
++
++		fse->min_width = mode_list[fse->index].width;
++		fse->max_width = fse->min_width;
++		fse->min_height = mode_list[fse->index].height;
++		fse->max_height = fse->min_height;
++	} else {
++		if (fse->code != MEDIA_BUS_FMT_SENSOR_DATA || fse->index > 0)
++			return -EINVAL;
++
++		fse->min_width = IMX477_EMBEDDED_LINE_WIDTH;
++		fse->max_width = fse->min_width;
++		fse->min_height = IMX477_NUM_EMBEDDED_LINES;
++		fse->max_height = fse->min_height;
++	}
++
++	return 0;
++}
++
++static void imx477_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
++{
++	fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
++	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
++							  fmt->colorspace,
++							  fmt->ycbcr_enc);
++	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
++}
++
++static void imx477_update_image_pad_format(struct imx477 *imx477,
++					   const struct imx477_mode *mode,
++					   struct v4l2_subdev_format *fmt)
++{
++	fmt->format.width = mode->width;
++	fmt->format.height = mode->height;
++	fmt->format.field = V4L2_FIELD_NONE;
++	imx477_reset_colorspace(&fmt->format);
++}
++
++static void imx477_update_metadata_pad_format(struct v4l2_subdev_format *fmt)
++{
++	fmt->format.width = IMX477_EMBEDDED_LINE_WIDTH;
++	fmt->format.height = IMX477_NUM_EMBEDDED_LINES;
++	fmt->format.code = MEDIA_BUS_FMT_SENSOR_DATA;
++	fmt->format.field = V4L2_FIELD_NONE;
++}
++
++static int imx477_get_pad_format(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_format *fmt)
++{
++	struct imx477 *imx477 = to_imx477(sd);
++
++	if (fmt->pad >= NUM_PADS)
++		return -EINVAL;
++
++	mutex_lock(&imx477->mutex);
++
++	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++		struct v4l2_mbus_framefmt *try_fmt =
++			v4l2_subdev_get_try_format(&imx477->sd, cfg, fmt->pad);
++		/* update the code which could change due to vflip or hflip: */
++		try_fmt->code = fmt->pad == IMAGE_PAD ?
++				imx477_get_format_code(imx477, try_fmt->code) :
++				MEDIA_BUS_FMT_SENSOR_DATA;
++		fmt->format = *try_fmt;
++	} else {
++		if (fmt->pad == IMAGE_PAD) {
++			imx477_update_image_pad_format(imx477, imx477->mode,
++						       fmt);
++			fmt->format.code =
++			       imx477_get_format_code(imx477, imx477->fmt.code);
++		} else {
++			imx477_update_metadata_pad_format(fmt);
++		}
++	}
++
++	mutex_unlock(&imx477->mutex);
++	return 0;
++}
++
++static
++unsigned int imx477_get_frame_length(const struct imx477_mode *mode,
++				     const struct v4l2_fract *timeperframe)
++{
++	u64 frame_length;
++
++	frame_length = (u64)timeperframe->numerator * IMX477_PIXEL_RATE;
++	do_div(frame_length,
++	       (u64)timeperframe->denominator * mode->line_length_pix);
++
++	if (WARN_ON(frame_length > IMX477_FRAME_LENGTH_MAX))
++		frame_length = IMX477_FRAME_LENGTH_MAX;
++
++	return max_t(unsigned int, frame_length, mode->height);
++}
++
++static void imx477_set_framing_limits(struct imx477 *imx477)
++{
++	const struct imx477_mode *mode = imx477->mode;
++	unsigned int frm_length_min, frm_length_default;
++	unsigned int exposure_max, exposure_def, hblank;
++
++	frm_length_min = imx477_get_frame_length(mode, &mode->timeperframe_min);
++	frm_length_default =
++		     imx477_get_frame_length(mode, &mode->timeperframe_default);
++
++	/* Update limits and set FPS to default */
++	__v4l2_ctrl_modify_range(imx477->vblank, frm_length_min - mode->height,
++				 IMX477_FRAME_LENGTH_MAX - mode->height,
++				 1, frm_length_default - mode->height);
++	__v4l2_ctrl_s_ctrl(imx477->vblank, frm_length_default - mode->height);
++
++	/* Update max exposure while meeting expected vblanking */
++	exposure_max = IMX477_FRAME_LENGTH_MAX - IMX477_EXPOSURE_OFFSET;
++	exposure_def = frm_length_default - mode->height -
++					    IMX477_EXPOSURE_OFFSET;
++	__v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
++				 exposure_max, imx477->exposure->step,
++				 exposure_def);
++	/*
++	 * Currently PPL is fixed to the mode specified value, so hblank
++	 * depends on mode->width only, and is not changeable in any
++	 * way other than changing the mode.
++	 */
++	hblank = mode->line_length_pix - mode->width;
++	__v4l2_ctrl_modify_range(imx477->hblank, hblank, hblank, 1, hblank);
++}
++
++static int imx477_set_pad_format(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_format *fmt)
++{
++	struct v4l2_mbus_framefmt *framefmt;
++	const struct imx477_mode *mode;
++	struct imx477 *imx477 = to_imx477(sd);
++
++	if (fmt->pad >= NUM_PADS)
++		return -EINVAL;
++
++	mutex_lock(&imx477->mutex);
++
++	if (fmt->pad == IMAGE_PAD) {
++		const struct imx477_mode *mode_list;
++		unsigned int num_modes;
++
++		/* Bayer order varies with flips */
++		fmt->format.code = imx477_get_format_code(imx477,
++							  fmt->format.code);
++
++		get_mode_table(fmt->format.code, &mode_list, &num_modes);
++
++		mode = v4l2_find_nearest_size(mode_list,
++					      num_modes,
++					      width, height,
++					      fmt->format.width,
++					      fmt->format.height);
++		imx477_update_image_pad_format(imx477, mode, fmt);
++		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++			framefmt = v4l2_subdev_get_try_format(sd, cfg,
++							      fmt->pad);
++			*framefmt = fmt->format;
++		} else {
++			imx477->mode = mode;
++			imx477_set_framing_limits(imx477);
++		}
++	} else {
++		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++			framefmt = v4l2_subdev_get_try_format(sd, cfg,
++							      fmt->pad);
++			*framefmt = fmt->format;
++		} else {
++			/* Only one embedded data mode is supported */
++			imx477_update_metadata_pad_format(fmt);
++		}
++	}
++
++	mutex_unlock(&imx477->mutex);
++
++	return 0;
++}
++
++static const struct v4l2_rect *
++__imx477_get_pad_crop(struct imx477 *imx477, struct v4l2_subdev_pad_config *cfg,
++		      unsigned int pad, enum v4l2_subdev_format_whence which)
++{
++	switch (which) {
++	case V4L2_SUBDEV_FORMAT_TRY:
++		return v4l2_subdev_get_try_crop(&imx477->sd, cfg, pad);
++	case V4L2_SUBDEV_FORMAT_ACTIVE:
++		return &imx477->mode->crop;
++	}
++
++	return NULL;
++}
++
++static int imx477_get_selection(struct v4l2_subdev *sd,
++				struct v4l2_subdev_pad_config *cfg,
++				struct v4l2_subdev_selection *sel)
++{
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP: {
++		struct imx477 *imx477 = to_imx477(sd);
++
++		mutex_lock(&imx477->mutex);
++		sel->r = *__imx477_get_pad_crop(imx477, cfg, sel->pad,
++						sel->which);
++		mutex_unlock(&imx477->mutex);
++
++		return 0;
++	}
++
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++		sel->r.left = 0;
++		sel->r.top = 0;
++		sel->r.width = IMX477_NATIVE_WIDTH;
++		sel->r.height = IMX477_NATIVE_HEIGHT;
++
++		return 0;
++
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++		sel->r.left = IMX477_PIXEL_ARRAY_LEFT;
++		sel->r.top = IMX477_PIXEL_ARRAY_TOP;
++		sel->r.width = IMX477_PIXEL_ARRAY_WIDTH;
++		sel->r.height = IMX477_PIXEL_ARRAY_HEIGHT;
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++/* Start streaming */
++static int imx477_start_streaming(struct imx477 *imx477)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	const struct imx477_reg_list *reg_list;
++	int ret;
++
++	if (!imx477->common_regs_written) {
++		ret = imx477_write_regs(imx477, mode_common_regs,
++					ARRAY_SIZE(mode_common_regs));
++		if (ret) {
++			dev_err(&client->dev, "%s failed to set common settings\n",
++				__func__);
++			return ret;
++		}
++		imx477->common_regs_written = true;
++	}
++
++	/* Apply default values of current mode */
++	reg_list = &imx477->mode->reg_list;
++	ret = imx477_write_regs(imx477, reg_list->regs, reg_list->num_of_regs);
++	if (ret) {
++		dev_err(&client->dev, "%s failed to set mode\n", __func__);
++		return ret;
++	}
++
++	/* Apply customized values from user */
++	ret =  __v4l2_ctrl_handler_setup(imx477->sd.ctrl_handler);
++	if (ret)
++		return ret;
++
++	/* set stream on register */
++	return imx477_write_reg(imx477, IMX477_REG_MODE_SELECT,
++				IMX477_REG_VALUE_08BIT, IMX477_MODE_STREAMING);
++}
++
++/* Stop streaming */
++static void imx477_stop_streaming(struct imx477 *imx477)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	int ret;
++
++	/* set stream off register */
++	ret = imx477_write_reg(imx477, IMX477_REG_MODE_SELECT,
++			       IMX477_REG_VALUE_08BIT, IMX477_MODE_STANDBY);
++	if (ret)
++		dev_err(&client->dev, "%s failed to set stream\n", __func__);
++}
++
++static int imx477_set_stream(struct v4l2_subdev *sd, int enable)
++{
++	struct imx477 *imx477 = to_imx477(sd);
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	int ret = 0;
++
++	mutex_lock(&imx477->mutex);
++	if (imx477->streaming == enable) {
++		mutex_unlock(&imx477->mutex);
++		return 0;
++	}
++
++	if (enable) {
++		ret = pm_runtime_get_sync(&client->dev);
++		if (ret < 0) {
++			pm_runtime_put_noidle(&client->dev);
++			goto err_unlock;
++		}
++
++		/*
++		 * Apply default & customized values
++		 * and then start streaming.
++		 */
++		ret = imx477_start_streaming(imx477);
++		if (ret)
++			goto err_rpm_put;
++	} else {
++		imx477_stop_streaming(imx477);
++		pm_runtime_put(&client->dev);
++	}
++
++	imx477->streaming = enable;
++
++	/* vflip and hflip cannot change during streaming */
++	__v4l2_ctrl_grab(imx477->vflip, enable);
++	__v4l2_ctrl_grab(imx477->hflip, enable);
++
++	mutex_unlock(&imx477->mutex);
++
++	return ret;
++
++err_rpm_put:
++	pm_runtime_put(&client->dev);
++err_unlock:
++	mutex_unlock(&imx477->mutex);
++
++	return ret;
++}
++
++/* Power/clock management functions */
++static int imx477_power_on(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx477 *imx477 = to_imx477(sd);
++	int ret;
++
++	ret = regulator_bulk_enable(IMX477_NUM_SUPPLIES,
++				    imx477->supplies);
++	if (ret) {
++		dev_err(&client->dev, "%s: failed to enable regulators\n",
++			__func__);
++		return ret;
++	}
++
++	ret = clk_prepare_enable(imx477->xclk);
++	if (ret) {
++		dev_err(&client->dev, "%s: failed to enable clock\n",
++			__func__);
++		goto reg_off;
++	}
++
++	gpiod_set_value_cansleep(imx477->reset_gpio, 1);
++	usleep_range(IMX477_XCLR_MIN_DELAY_US,
++		     IMX477_XCLR_MIN_DELAY_US + IMX477_XCLR_DELAY_RANGE_US);
++
++	return 0;
++
++reg_off:
++	regulator_bulk_disable(IMX477_NUM_SUPPLIES, imx477->supplies);
++	return ret;
++}
++
++static int imx477_power_off(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx477 *imx477 = to_imx477(sd);
++
++	gpiod_set_value_cansleep(imx477->reset_gpio, 0);
++	regulator_bulk_disable(IMX477_NUM_SUPPLIES, imx477->supplies);
++	clk_disable_unprepare(imx477->xclk);
++
++	/* Force reprogramming of the common registers when powered up again. */
++	imx477->common_regs_written = false;
++
++	return 0;
++}
++
++static int __maybe_unused imx477_suspend(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx477 *imx477 = to_imx477(sd);
++
++	if (imx477->streaming)
++		imx477_stop_streaming(imx477);
++
++	return 0;
++}
++
++static int __maybe_unused imx477_resume(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx477 *imx477 = to_imx477(sd);
++	int ret;
++
++	if (imx477->streaming) {
++		ret = imx477_start_streaming(imx477);
++		if (ret)
++			goto error;
++	}
++
++	return 0;
++
++error:
++	imx477_stop_streaming(imx477);
++	imx477->streaming = 0;
++	return ret;
++}
++
++static int imx477_get_regulators(struct imx477 *imx477)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	unsigned int i;
++
++	for (i = 0; i < IMX477_NUM_SUPPLIES; i++)
++		imx477->supplies[i].supply = imx477_supply_name[i];
++
++	return devm_regulator_bulk_get(&client->dev,
++				       IMX477_NUM_SUPPLIES,
++				       imx477->supplies);
++}
++
++/* Verify chip ID */
++static int imx477_identify_module(struct imx477 *imx477)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	int ret;
++	u32 val;
++
++	ret = imx477_read_reg(imx477, IMX477_REG_CHIP_ID,
++			      IMX477_REG_VALUE_16BIT, &val);
++	if (ret) {
++		dev_err(&client->dev, "failed to read chip id %x, with error %d\n",
++			IMX477_CHIP_ID, ret);
++		return ret;
++	}
++
++	if (val != IMX477_CHIP_ID) {
++		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
++			IMX477_CHIP_ID, val);
++		ret = -EINVAL;
++	}
++
++	return 0;
++}
++
++static const struct v4l2_subdev_core_ops imx477_core_ops = {
++	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
++	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
++};
++
++static const struct v4l2_subdev_video_ops imx477_video_ops = {
++	.s_stream = imx477_set_stream,
++};
++
++static const struct v4l2_subdev_pad_ops imx477_pad_ops = {
++	.enum_mbus_code = imx477_enum_mbus_code,
++	.get_fmt = imx477_get_pad_format,
++	.set_fmt = imx477_set_pad_format,
++	.get_selection = imx477_get_selection,
++	.enum_frame_size = imx477_enum_frame_size,
++};
++
++static const struct v4l2_subdev_ops imx477_subdev_ops = {
++	.core = &imx477_core_ops,
++	.video = &imx477_video_ops,
++	.pad = &imx477_pad_ops,
++};
++
++static const struct v4l2_subdev_internal_ops imx477_internal_ops = {
++	.open = imx477_open,
++};
++
++/* Initialize control handlers */
++static int imx477_init_controls(struct imx477 *imx477)
++{
++	struct v4l2_ctrl_handler *ctrl_hdlr;
++	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	unsigned int i;
++	int ret;
++
++	ctrl_hdlr = &imx477->ctrl_handler;
++	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 14);
++	if (ret)
++		return ret;
++
++	mutex_init(&imx477->mutex);
++	ctrl_hdlr->lock = &imx477->mutex;
++
++	/* By default, PIXEL_RATE is read only */
++	imx477->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++					       V4L2_CID_PIXEL_RATE,
++					       IMX477_PIXEL_RATE,
++					       IMX477_PIXEL_RATE, 1,
++					       IMX477_PIXEL_RATE);
++
++	/*
++	 * Create the controls here, but mode specific limits are setup
++	 * in the imx477_set_framing_limits() call below.
++	 */
++	imx477->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++					   V4L2_CID_VBLANK, 0, 0xffff, 1, 0);
++	imx477->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++					   V4L2_CID_HBLANK, 0, 0xffff, 1, 0);
++
++	/* HBLANK is read-only for now, but does change with mode. */
++	if (imx477->hblank)
++		imx477->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++
++	imx477->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++					     V4L2_CID_EXPOSURE,
++					     IMX477_EXPOSURE_MIN,
++					     IMX477_EXPOSURE_MAX,
++					     IMX477_EXPOSURE_STEP,
++					     IMX477_EXPOSURE_DEFAULT);
++
++	v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
++			  IMX477_ANA_GAIN_MIN, IMX477_ANA_GAIN_MAX,
++			  IMX477_ANA_GAIN_STEP, IMX477_ANA_GAIN_DEFAULT);
++
++	v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
++			  IMX477_DGTL_GAIN_MIN, IMX477_DGTL_GAIN_MAX,
++			  IMX477_DGTL_GAIN_STEP, IMX477_DGTL_GAIN_DEFAULT);
++
++	imx477->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++					  V4L2_CID_HFLIP, 0, 1, 1, 0);
++	if (imx477->hflip)
++		imx477->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++
++	imx477->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++					  V4L2_CID_VFLIP, 0, 1, 1, 0);
++	if (imx477->vflip)
++		imx477->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++
++	v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx477_ctrl_ops,
++				     V4L2_CID_TEST_PATTERN,
++				     ARRAY_SIZE(imx477_test_pattern_menu) - 1,
++				     0, 0, imx477_test_pattern_menu);
++	for (i = 0; i < 4; i++) {
++		/*
++		 * The assumption is that
++		 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
++		 * V4L2_CID_TEST_PATTERN_BLUE   == V4L2_CID_TEST_PATTERN_RED + 2
++		 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
++		 */
++		v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++				  V4L2_CID_TEST_PATTERN_RED + i,
++				  IMX477_TEST_PATTERN_COLOUR_MIN,
++				  IMX477_TEST_PATTERN_COLOUR_MAX,
++				  IMX477_TEST_PATTERN_COLOUR_STEP,
++				  IMX477_TEST_PATTERN_COLOUR_MAX);
++		/* The "Solid color" pattern is white by default */
++	}
++
++	if (ctrl_hdlr->error) {
++		ret = ctrl_hdlr->error;
++		dev_err(&client->dev, "%s control init failed (%d)\n",
++			__func__, ret);
++		goto error;
++	}
++
++	imx477->sd.ctrl_handler = ctrl_hdlr;
++
++	/* Setup exposure and frame/line length limits. */
++	imx477_set_framing_limits(imx477);
++
++	return 0;
++
++error:
++	v4l2_ctrl_handler_free(ctrl_hdlr);
++	mutex_destroy(&imx477->mutex);
++
++	return ret;
++}
++
++static void imx477_free_controls(struct imx477 *imx477)
++{
++	v4l2_ctrl_handler_free(imx477->sd.ctrl_handler);
++	mutex_destroy(&imx477->mutex);
++}
++
++static int imx477_check_hwcfg(struct device *dev)
++{
++	struct fwnode_handle *endpoint;
++	struct v4l2_fwnode_endpoint ep_cfg = {
++		.bus_type = V4L2_MBUS_CSI2_DPHY
++	};
++	int ret = -EINVAL;
++
++	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
++	if (!endpoint) {
++		dev_err(dev, "endpoint node not found\n");
++		return -EINVAL;
++	}
++
++	if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
++		dev_err(dev, "could not parse endpoint\n");
++		goto error_out;
++	}
++
++	/* Check the number of MIPI CSI2 data lanes */
++	if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
++		dev_err(dev, "only 2 data lanes are currently supported\n");
++		goto error_out;
++	}
++
++	/* Check the link frequency set in device tree */
++	if (!ep_cfg.nr_of_link_frequencies) {
++		dev_err(dev, "link-frequency property not found in DT\n");
++		goto error_out;
++	}
++
++	if (ep_cfg.nr_of_link_frequencies != 1 ||
++	    ep_cfg.link_frequencies[0] != IMX477_DEFAULT_LINK_FREQ) {
++		dev_err(dev, "Link frequency not supported: %lld\n",
++			ep_cfg.link_frequencies[0]);
++		goto error_out;
++	}
++
++	ret = 0;
++
++error_out:
++	v4l2_fwnode_endpoint_free(&ep_cfg);
++	fwnode_handle_put(endpoint);
++
++	return ret;
++}
++
++static int imx477_probe(struct i2c_client *client)
++{
++	struct device *dev = &client->dev;
++	struct imx477 *imx477;
++	int ret;
++
++	imx477 = devm_kzalloc(&client->dev, sizeof(*imx477), GFP_KERNEL);
++	if (!imx477)
++		return -ENOMEM;
++
++	v4l2_i2c_subdev_init(&imx477->sd, client, &imx477_subdev_ops);
++
++	/* Check the hardware configuration in device tree */
++	if (imx477_check_hwcfg(dev))
++		return -EINVAL;
++
++	/* Get system clock (xclk) */
++	imx477->xclk = devm_clk_get(dev, NULL);
++	if (IS_ERR(imx477->xclk)) {
++		dev_err(dev, "failed to get xclk\n");
++		return PTR_ERR(imx477->xclk);
++	}
++
++	imx477->xclk_freq = clk_get_rate(imx477->xclk);
++	if (imx477->xclk_freq != IMX477_XCLK_FREQ) {
++		dev_err(dev, "xclk frequency not supported: %d Hz\n",
++			imx477->xclk_freq);
++		return -EINVAL;
++	}
++
++	ret = imx477_get_regulators(imx477);
++	if (ret) {
++		dev_err(dev, "failed to get regulators\n");
++		return ret;
++	}
++
++	/* Request optional enable pin */
++	imx477->reset_gpio = devm_gpiod_get_optional(dev, "reset",
++						     GPIOD_OUT_HIGH);
++
++	/*
++	 * The sensor must be powered for imx477_identify_module()
++	 * to be able to read the CHIP_ID register
++	 */
++	ret = imx477_power_on(dev);
++	if (ret)
++		return ret;
++
++	ret = imx477_identify_module(imx477);
++	if (ret)
++		goto error_power_off;
++
++	/* Initialize default format */
++	imx477_set_default_format(imx477);
++
++	/* Enable runtime PM and turn off the device */
++	pm_runtime_set_active(dev);
++	pm_runtime_enable(dev);
++	pm_runtime_idle(dev);
++
++	/* This needs the pm runtime to be registered. */
++	ret = imx477_init_controls(imx477);
++	if (ret)
++		goto error_power_off;
++
++	/* Initialize subdev */
++	imx477->sd.internal_ops = &imx477_internal_ops;
++	imx477->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
++			    V4L2_SUBDEV_FL_HAS_EVENTS;
++	imx477->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
++
++	/* Initialize source pads */
++	imx477->pad[IMAGE_PAD].flags = MEDIA_PAD_FL_SOURCE;
++	imx477->pad[METADATA_PAD].flags = MEDIA_PAD_FL_SOURCE;
++
++	ret = media_entity_pads_init(&imx477->sd.entity, NUM_PADS, imx477->pad);
++	if (ret) {
++		dev_err(dev, "failed to init entity pads: %d\n", ret);
++		goto error_handler_free;
++	}
++
++	ret = v4l2_async_register_subdev_sensor(&imx477->sd);
++	if (ret < 0) {
++		dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
++		goto error_media_entity;
++	}
++
++	return 0;
++
++error_media_entity:
++	media_entity_cleanup(&imx477->sd.entity);
++
++error_handler_free:
++	imx477_free_controls(imx477);
++
++error_power_off:
++	pm_runtime_disable(&client->dev);
++	pm_runtime_set_suspended(&client->dev);
++	imx477_power_off(&client->dev);
++
++	return ret;
++}
++
++static int imx477_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx477 *imx477 = to_imx477(sd);
++
++	v4l2_async_unregister_subdev(sd);
++	media_entity_cleanup(&sd->entity);
++	imx477_free_controls(imx477);
++
++	pm_runtime_disable(&client->dev);
++	if (!pm_runtime_status_suspended(&client->dev))
++		imx477_power_off(&client->dev);
++	pm_runtime_set_suspended(&client->dev);
++
++	return 0;
++}
++
++static const struct of_device_id imx477_dt_ids[] = {
++	{ .compatible = "sony,imx477" },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, imx477_dt_ids);
++
++static const struct dev_pm_ops imx477_pm_ops = {
++	SET_SYSTEM_SLEEP_PM_OPS(imx477_suspend, imx477_resume)
++	SET_RUNTIME_PM_OPS(imx477_power_off, imx477_power_on, NULL)
++};
++
++static struct i2c_driver imx477_i2c_driver = {
++	.driver = {
++		.name = "imx477",
++		.of_match_table	= imx477_dt_ids,
++		.pm = &imx477_pm_ops,
++	},
++	.probe_new = imx477_probe,
++	.remove = imx477_remove,
++};
++
++module_i2c_driver(imx477_i2c_driver);
++
++MODULE_AUTHOR("Naushir Patuck <naush@raspberrypi.com>");
++MODULE_DESCRIPTION("Sony IMX477 sensor driver");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0282-media-i2c-imx477-Add-support-for-adaptive-frame-cont.patch b/target/linux/bcm27xx/patches-5.15/950-0282-media-i2c-imx477-Add-support-for-adaptive-frame-cont.patch
new file mode 100644
index 0000000000..c942135890
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0282-media-i2c-imx477-Add-support-for-adaptive-frame-cont.patch
@@ -0,0 +1,182 @@
+From a189a016325250d0dd40d98ac0616f96f98b834d Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Fri, 8 May 2020 09:41:17 +0100
+Subject: [PATCH] media: i2c: imx477: Add support for adaptive frame
+ control
+
+Use V4L2_CID_EXPOSURE_AUTO_PRIORITY to control if the driver should
+automatically adjust the sensor frame length based on exposure time,
+allowing variable frame rates and longer exposures.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 113 +++++++++++++++++++++++++++++--------
+ 1 file changed, 91 insertions(+), 22 deletions(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1082,6 +1082,8 @@ struct imx477 {
+ 	struct v4l2_ctrl *hflip;
+ 	struct v4l2_ctrl *vblank;
+ 	struct v4l2_ctrl *hblank;
++	/* This ctrl allows automatic variable framerate */
++	struct v4l2_ctrl *exposure_auto;
+ 
+ 	/* Current mode */
+ 	const struct imx477_mode *mode;
+@@ -1278,6 +1280,72 @@ static int imx477_open(struct v4l2_subde
+ 	return 0;
+ }
+ 
++static int imx477_set_exposure(struct imx477 *imx477, unsigned int val)
++{
++	int ret;
++
++	ret = imx477_write_reg(imx477, IMX477_REG_EXPOSURE,
++			       IMX477_REG_VALUE_16BIT, val);
++
++	/* Setup the frame length in the case of auto framerate mode. */
++	if (imx477->exposure_auto->val) {
++		unsigned int frame_length, frame_length_max, frame_length_min;
++
++		frame_length_min = imx477->vblank->minimum +
++				   imx477->mode->height;
++		frame_length_max = imx477->vblank->maximum +
++				   imx477->mode->height;
++		frame_length = max(frame_length_min,
++				   val + IMX477_EXPOSURE_OFFSET);
++		frame_length = min(frame_length_max, frame_length);
++		ret += imx477_write_reg(imx477, IMX477_REG_FRAME_LENGTH,
++					IMX477_REG_VALUE_16BIT, frame_length);
++	}
++
++	return ret;
++}
++
++static void imx477_adjust_exposure_range(struct imx477 *imx477,
++					 struct v4l2_ctrl *ctrl)
++{
++	int exposure_max, exposure_def;
++
++	if (ctrl->id == V4L2_CID_VBLANK || !ctrl->val) {
++		/*
++		 * Either VBLANK has been changed or auto framerate
++		 * adjusting has been disabled. Honour the VBLANK limits
++		 * when setting exposure.
++		 */
++		exposure_max = imx477->mode->height + imx477->vblank->val -
++						      IMX477_EXPOSURE_OFFSET;
++
++		if (ctrl->id == V4L2_CID_EXPOSURE_AUTO_PRIORITY) {
++			/*
++			 * Allow VBLANK adjustments since the driver is not
++			 * handling frame length control automatically.
++			 */
++			__v4l2_ctrl_grab(imx477->vblank, false);
++		}
++	} else {
++		/*
++		 * Auto framerate adjusting has been enabled. VBLANK
++		 * ctrl has been disabled and exposure can ramp up
++		 * to the maximum allowable value.
++		 */
++		exposure_max = IMX477_EXPOSURE_MAX;
++		/*
++		 * Do not allow VBLANK adjustments if the driver is
++		 * handling it frame length control automatically.
++		 */
++		__v4l2_ctrl_grab(imx477->vblank, true);
++	}
++
++	exposure_def = min(exposure_max, imx477->exposure->val);
++	__v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
++				 exposure_max, imx477->exposure->step,
++				 exposure_def);
++}
++
+ static int imx477_set_ctrl(struct v4l2_ctrl *ctrl)
+ {
+ 	struct imx477 *imx477 =
+@@ -1285,17 +1353,13 @@ static int imx477_set_ctrl(struct v4l2_c
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+ 	int ret = 0;
+ 
+-	if (ctrl->id == V4L2_CID_VBLANK) {
+-		int exposure_max, exposure_def;
+-
+-		/* Update max exposure while meeting expected vblanking */
+-		exposure_max = imx477->mode->height + ctrl->val -
+-							IMX477_EXPOSURE_OFFSET;
+-		exposure_def = min(exposure_max, imx477->exposure->val);
+-		__v4l2_ctrl_modify_range(imx477->exposure,
+-					 imx477->exposure->minimum,
+-					 exposure_max, imx477->exposure->step,
+-					 exposure_def);
++	if (ctrl->id == V4L2_CID_VBLANK ||
++	    ctrl->id == V4L2_CID_EXPOSURE_AUTO_PRIORITY) {
++		/*
++		 * These controls may change the limits of usable exposure,
++		 * so check and adjust if necessary.
++		 */
++		imx477_adjust_exposure_range(imx477, ctrl);
+ 	}
+ 
+ 	/*
+@@ -1311,8 +1375,14 @@ static int imx477_set_ctrl(struct v4l2_c
+ 				       IMX477_REG_VALUE_16BIT, ctrl->val);
+ 		break;
+ 	case V4L2_CID_EXPOSURE:
+-		ret = imx477_write_reg(imx477, IMX477_REG_EXPOSURE,
+-				       IMX477_REG_VALUE_16BIT, ctrl->val);
++		ret = imx477_set_exposure(imx477, ctrl->val);
++		break;
++	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
++		/*
++		 * imx477_set_exposure() will recalculate the frame length
++		 * to adjust the framerate to match the exposure.
++		 */
++		ret = imx477_set_exposure(imx477, imx477->exposure->val);
+ 		break;
+ 	case V4L2_CID_DIGITAL_GAIN:
+ 		ret = imx477_write_reg(imx477, IMX477_REG_DIGITAL_GAIN,
+@@ -1510,9 +1580,8 @@ unsigned int imx477_get_frame_length(con
+ 
+ static void imx477_set_framing_limits(struct imx477 *imx477)
+ {
++	unsigned int frm_length_min, frm_length_default, hblank;
+ 	const struct imx477_mode *mode = imx477->mode;
+-	unsigned int frm_length_min, frm_length_default;
+-	unsigned int exposure_max, exposure_def, hblank;
+ 
+ 	frm_length_min = imx477_get_frame_length(mode, &mode->timeperframe_min);
+ 	frm_length_default =
+@@ -1522,15 +1591,10 @@ static void imx477_set_framing_limits(st
+ 	__v4l2_ctrl_modify_range(imx477->vblank, frm_length_min - mode->height,
+ 				 IMX477_FRAME_LENGTH_MAX - mode->height,
+ 				 1, frm_length_default - mode->height);
++
++	/* Setting this will adjust the exposure limits as well. */
+ 	__v4l2_ctrl_s_ctrl(imx477->vblank, frm_length_default - mode->height);
+ 
+-	/* Update max exposure while meeting expected vblanking */
+-	exposure_max = IMX477_FRAME_LENGTH_MAX - IMX477_EXPOSURE_OFFSET;
+-	exposure_def = frm_length_default - mode->height -
+-					    IMX477_EXPOSURE_OFFSET;
+-	__v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
+-				 exposure_max, imx477->exposure->step,
+-				 exposure_def);
+ 	/*
+ 	 * Currently PPL is fixed to the mode specified value, so hblank
+ 	 * depends on mode->width only, and is not changeable in any
+@@ -1939,6 +2003,11 @@ static int imx477_init_controls(struct i
+ 			  IMX477_DGTL_GAIN_MIN, IMX477_DGTL_GAIN_MAX,
+ 			  IMX477_DGTL_GAIN_STEP, IMX477_DGTL_GAIN_DEFAULT);
+ 
++	imx477->exposure_auto =
++			v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
++					  V4L2_CID_EXPOSURE_AUTO_PRIORITY,
++					  0, 1, 1, 0);
++
+ 	imx477->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+ 					  V4L2_CID_HFLIP, 0, 1, 1, 0);
+ 	if (imx477->hflip)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0283-media-i2c-imx477-Return-correct-result-on-sensor-id-.patch b/target/linux/bcm27xx/patches-5.15/950-0283-media-i2c-imx477-Return-correct-result-on-sensor-id-.patch
new file mode 100644
index 0000000000..47d490fc47
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0283-media-i2c-imx477-Return-correct-result-on-sensor-id-.patch
@@ -0,0 +1,25 @@
+From 4f6d901936f956afba1253f1fba337cf49957e2f Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 19 May 2020 16:56:33 +0100
+Subject: [PATCH] media: i2c: imx477: Return correct result on sensor
+ id verification
+
+The test should return -EIO if the register read id does not match
+the expected sensor id.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1919,7 +1919,7 @@ static int imx477_identify_module(struct
+ 	if (val != IMX477_CHIP_ID) {
+ 		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
+ 			IMX477_CHIP_ID, val);
+-		ret = -EINVAL;
++		return -EIO;
+ 	}
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0284-media-i2c-imx477-Parse-and-register-properties.patch b/target/linux/bcm27xx/patches-5.15/950-0284-media-i2c-imx477-Parse-and-register-properties.patch
new file mode 100644
index 0000000000..55b78ea0c7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0284-media-i2c-imx477-Parse-and-register-properties.patch
@@ -0,0 +1,45 @@
+From b2334a401dd6d38b2fd38e1168480dc3ec7d704e Mon Sep 17 00:00:00 2001
+From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Date: Sat, 4 Jul 2020 01:45:08 +0300
+Subject: [PATCH] media: i2c: imx477: Parse and register properties
+
+Parse device properties and register controls for them using the V4L2
+fwnode properties helpers.
+
+Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+---
+ drivers/media/i2c/imx477.c | 12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1957,11 +1957,12 @@ static int imx477_init_controls(struct i
+ {
+ 	struct v4l2_ctrl_handler *ctrl_hdlr;
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
++	struct v4l2_fwnode_device_properties props;
+ 	unsigned int i;
+ 	int ret;
+ 
+ 	ctrl_hdlr = &imx477->ctrl_handler;
+-	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 14);
++	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 16);
+ 	if (ret)
+ 		return ret;
+ 
+@@ -2045,6 +2046,15 @@ static int imx477_init_controls(struct i
+ 		goto error;
+ 	}
+ 
++	ret = v4l2_fwnode_device_parse(&client->dev, &props);
++	if (ret)
++		goto error;
++
++	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx477_ctrl_ops,
++					      &props);
++	if (ret)
++		goto error;
++
+ 	imx477->sd.ctrl_handler = ctrl_hdlr;
+ 
+ 	/* Setup exposure and frame/line length limits. */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0285-media-bcm2835-unicam-Always-service-interrupts.patch b/target/linux/bcm27xx/patches-5.15/950-0285-media-bcm2835-unicam-Always-service-interrupts.patch
new file mode 100644
index 0000000000..8872cc931b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0285-media-bcm2835-unicam-Always-service-interrupts.patch
@@ -0,0 +1,51 @@
+From cfd60149f96e3021e07c2ee792312b176dd6a23b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 13 May 2020 18:28:27 +0100
+Subject: [PATCH] media: bcm2835-unicam: Always service interrupts
+
+From when bringing up the driver, there was a check in the isr
+to ignore interrupts (claiming them handled) should the driver
+not be streaming.
+
+The VPU now will not register a camera driver if it finds a
+CSI2 node enabled in device tree, therefore this flawed check is
+redundant.
+
+https://github.com/raspberrypi/linux/issues/3602
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 15 ---------------
+ 1 file changed, 15 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -782,12 +782,6 @@ static bool unicam_all_nodes_streaming(s
+ 	return ret;
+ }
+ 
+-static bool unicam_all_nodes_disabled(struct unicam_device *dev)
+-{
+-	return !dev->node[IMAGE_PAD].streaming &&
+-	       !dev->node[METADATA_PAD].streaming;
+-}
+-
+ static void unicam_queue_event_sof(struct unicam_device *unicam)
+ {
+ 	struct v4l2_event event = {
+@@ -815,15 +809,6 @@ static irqreturn_t unicam_isr(int irq, v
+ 	u32 ista, sta;
+ 	u64 ts;
+ 
+-	/*
+-	 * Don't service interrupts if not streaming.
+-	 * Avoids issues if the VPU should enable the
+-	 * peripheral without the kernel knowing (that
+-	 * shouldn't happen, but causes issues if it does).
+-	 */
+-	if (unicam_all_nodes_disabled(unicam))
+-		return IRQ_NONE;
+-
+ 	sta = reg_read(unicam, UNICAM_STA);
+ 	/* Write value back to clear the interrupts */
+ 	reg_write(unicam, UNICAM_STA, sta);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0286-media-bcm2835-unicam-Fix-uninitialized-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0286-media-bcm2835-unicam-Fix-uninitialized-warning.patch
new file mode 100644
index 0000000000..1fb0f71a33
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0286-media-bcm2835-unicam-Fix-uninitialized-warning.patch
@@ -0,0 +1,21 @@
+From 0d1e560ce0ffe927449ba5bfdb2009123fde214d Mon Sep 17 00:00:00 2001
+From: Jacko Dirks <jdirks.linuxdev@gmail.com>
+Date: Tue, 5 May 2020 14:33:31 +0200
+Subject: [PATCH] media: bcm2835: unicam: Fix uninitialized warning
+
+Signed-off-by: Jacko Dirks <jdirks.linuxdev@gmail.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1004,7 +1004,7 @@ const struct unicam_fmt *get_first_suppo
+ 	struct v4l2_subdev_mbus_code_enum mbus_code;
+ 	const struct unicam_fmt *fmt = NULL;
+ 	unsigned int i;
+-	int ret;
++	int ret = 0;
+ 
+ 	for (i = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++i) {
+ 		memset(&mbus_code, 0, sizeof(mbus_code));
diff --git a/target/linux/bcm27xx/patches-5.15/950-0287-media-bcm2835-unicam-Fixup-review-comments-from-Hans.patch b/target/linux/bcm27xx/patches-5.15/950-0287-media-bcm2835-unicam-Fixup-review-comments-from-Hans.patch
new file mode 100644
index 0000000000..c6915f66d4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0287-media-bcm2835-unicam-Fixup-review-comments-from-Hans.patch
@@ -0,0 +1,244 @@
+From d29db3b2d7b032385ae913c40dfa1b17feac8444 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 23 Jun 2020 15:14:05 +0100
+Subject: [PATCH] media: bcm2835-unicam: Fixup review comments from
+ Hans.
+
+Updates the driver based on the upstream review comments from
+Hans Verkuil at https://patchwork.linuxtv.org/patch/63531/
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/Kconfig        | 12 ++--
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 70 ++++++++-----------
+ 2 files changed, 39 insertions(+), 43 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/Kconfig
++++ b/drivers/media/platform/bcm2835/Kconfig
+@@ -1,7 +1,7 @@
+ # Broadcom VideoCore4 V4L2 camera support
+ 
+ config VIDEO_BCM2835_UNICAM
+-	tristate "Broadcom BCM2835 Unicam video capture driver"
++	tristate "Broadcom BCM283x/BCM271x Unicam video capture driver"
+ 	depends on VIDEO_V4L2
+ 	depends on ARCH_BCM2835 || COMPILE_TEST
+ 	select VIDEO_V4L2_SUBDEV_API
+@@ -9,9 +9,13 @@ config VIDEO_BCM2835_UNICAM
+ 	select VIDEOBUF2_DMA_CONTIG
+ 	select V4L2_FWNODE
+ 	help
+-	  Say Y here to enable support for the BCM2835 CSI-2 receiver. This is a
+-	  V4L2 driver that controls the CSI-2 receiver directly, independently
+-	  from the VC4 firmware.
++	  Say Y here to enable support for the BCM283x/BCM271x CSI-2 receiver.
++	  This is a V4L2 driver that controls the CSI-2 receiver directly,
++	  independently from the VC4 firmware.
++	  This driver is mutually exclusive with the use of bcm2835-camera. The
++	  firmware will disable all access to the peripheral from within the
++	  firmware if it finds a DT node using it, and bcm2835-camera will
++	  therefore fail to probe.
+ 
+ 	  To compile this driver as a module, choose M here. The module will be
+ 	  called bcm2835-unicam.
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1,6 +1,6 @@
+ // SPDX-License-Identifier: GPL-2.0-only
+ /*
+- * BCM2835 Unicam Capture Driver
++ * BCM283x / BCM271x Unicam Capture Driver
+  *
+  * Copyright (C) 2017-2020 - Raspberry Pi (Trading) Ltd.
+  *
+@@ -571,9 +571,8 @@ static const struct unicam_fmt *find_for
+ 	return NULL;
+ }
+ 
+-static inline unsigned int bytes_per_line(u32 width,
+-					  const struct unicam_fmt *fmt,
+-					  u32 v4l2_fourcc)
++static unsigned int bytes_per_line(u32 width, const struct unicam_fmt *fmt,
++				   u32 v4l2_fourcc)
+ {
+ 	if (v4l2_fourcc == fmt->repacked_fourcc)
+ 		/* Repacking always goes to 16bpp */
+@@ -718,7 +717,7 @@ static void unicam_wr_dma_addr(struct un
+ 	}
+ }
+ 
+-static inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
++static unsigned int unicam_get_lines_done(struct unicam_device *dev)
+ {
+ 	dma_addr_t start_addr, cur_addr;
+ 	unsigned int stride = dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline;
+@@ -732,7 +731,7 @@ static inline unsigned int unicam_get_li
+ 	return (unsigned int)(cur_addr - start_addr) / stride;
+ }
+ 
+-static inline void unicam_schedule_next_buffer(struct unicam_node *node)
++static void unicam_schedule_next_buffer(struct unicam_node *node)
+ {
+ 	struct unicam_device *dev = node->dev;
+ 	struct unicam_buffer *buf;
+@@ -751,7 +750,7 @@ static inline void unicam_schedule_next_
+ 	unicam_wr_dma_addr(dev, addr, size, node->pad_id);
+ }
+ 
+-static inline void unicam_schedule_dummy_buffer(struct unicam_node *node)
++static void unicam_schedule_dummy_buffer(struct unicam_node *node)
+ {
+ 	struct unicam_device *dev = node->dev;
+ 
+@@ -763,8 +762,8 @@ static inline void unicam_schedule_dummy
+ 	node->next_frm = NULL;
+ }
+ 
+-static inline void unicam_process_buffer_complete(struct unicam_node *node,
+-						  unsigned int sequence)
++static void unicam_process_buffer_complete(struct unicam_node *node,
++					   unsigned int sequence)
+ {
+ 	node->cur_frm->vb.field = node->m_fmt.field;
+ 	node->cur_frm->vb.sequence = sequence;
+@@ -772,16 +771,6 @@ static inline void unicam_process_buffer
+ 	vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
+ }
+ 
+-static bool unicam_all_nodes_streaming(struct unicam_device *dev)
+-{
+-	bool ret;
+-
+-	ret = dev->node[IMAGE_PAD].open && dev->node[IMAGE_PAD].streaming;
+-	ret &= !dev->node[METADATA_PAD].open ||
+-	       dev->node[METADATA_PAD].streaming;
+-	return ret;
+-}
+-
+ static void unicam_queue_event_sof(struct unicam_device *unicam)
+ {
+ 	struct v4l2_event event = {
+@@ -904,8 +893,8 @@ static int unicam_querycap(struct file *
+ 	struct unicam_node *node = video_drvdata(file);
+ 	struct unicam_device *dev = node->dev;
+ 
+-	strlcpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
+-	strlcpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
++	strscpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
++	strscpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
+ 
+ 	snprintf(cap->bus_info, sizeof(cap->bus_info),
+ 		 "platform:%s", dev_name(&dev->pdev->dev));
+@@ -998,8 +987,8 @@ static int unicam_g_fmt_vid_cap(struct f
+ 	return 0;
+ }
+ 
+-static
+-const struct unicam_fmt *get_first_supported_format(struct unicam_device *dev)
++static const struct unicam_fmt *
++get_first_supported_format(struct unicam_device *dev)
+ {
+ 	struct v4l2_subdev_mbus_code_enum mbus_code;
+ 	const struct unicam_fmt *fmt = NULL;
+@@ -1589,7 +1578,8 @@ static void unicam_disable(struct unicam
+ 	clk_write(dev, 0);
+ }
+ 
+-static void unicam_return_buffers(struct unicam_node *node)
++static void unicam_return_buffers(struct unicam_node *node,
++				  enum vb2_buffer_state state)
+ {
+ 	struct unicam_buffer *buf, *tmp;
+ 	unsigned long flags;
+@@ -1597,15 +1587,15 @@ static void unicam_return_buffers(struct
+ 	spin_lock_irqsave(&node->dma_queue_lock, flags);
+ 	list_for_each_entry_safe(buf, tmp, &node->dma_queue, list) {
+ 		list_del(&buf->list);
+-		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
++		vb2_buffer_done(&buf->vb.vb2_buf, state);
+ 	}
+ 
+ 	if (node->cur_frm)
+ 		vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
+-				VB2_BUF_STATE_ERROR);
++				state);
+ 	if (node->next_frm && node->cur_frm != node->next_frm)
+ 		vb2_buffer_done(&node->next_frm->vb.vb2_buf,
+-				VB2_BUF_STATE_ERROR);
++				state);
+ 
+ 	node->cur_frm = NULL;
+ 	node->next_frm = NULL;
+@@ -1622,7 +1612,13 @@ static int unicam_start_streaming(struct
+ 	int ret;
+ 
+ 	node->streaming = true;
+-	if (!unicam_all_nodes_streaming(dev)) {
++	if (!(dev->node[IMAGE_PAD].open && dev->node[IMAGE_PAD].streaming &&
++	      (!dev->node[METADATA_PAD].open ||
++	       dev->node[METADATA_PAD].streaming))) {
++		/*
++		 * Metadata pad must be enabled before image pad if it is
++		 * wanted.
++		 */
+ 		unicam_dbg(3, dev, "Not all nodes are streaming yet.");
+ 		return 0;
+ 	}
+@@ -1726,7 +1722,7 @@ err_vpu_clock:
+ err_pm_put:
+ 	unicam_runtime_put(dev);
+ err_streaming:
+-	unicam_return_buffers(node);
++	unicam_return_buffers(node, VB2_BUF_STATE_QUEUED);
+ 	node->streaming = false;
+ 
+ 	return ret;
+@@ -1771,7 +1767,7 @@ static void unicam_stop_streaming(struct
+ 	}
+ 
+ 	/* Clear all queued buffers for the node */
+-	unicam_return_buffers(node);
++	unicam_return_buffers(node, VB2_BUF_STATE_ERROR);
+ }
+ 
+ static int unicam_enum_input(struct file *file, void *priv,
+@@ -1789,14 +1785,13 @@ static int unicam_enum_input(struct file
+ 		inp->std = 0;
+ 	} else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
+ 		inp->capabilities = V4L2_IN_CAP_STD;
+-		if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std)
+-					< 0)
++		if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std) < 0)
+ 			inp->std = V4L2_STD_ALL;
+ 	} else {
+ 		inp->capabilities = 0;
+ 		inp->std = 0;
+ 	}
+-	sprintf(inp->name, "Camera 0");
++	snprintf(inp->name, sizeof(inp->name), "Camera 0");
+ 	return 0;
+ }
+ 
+@@ -2025,6 +2020,9 @@ static int unicam_s_dv_timings(struct fi
+ 	ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
+ 			       &current_timings);
+ 
++	if (ret < 0)
++		return ret;
++
+ 	if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
+ 		return 0;
+ 
+@@ -2455,12 +2453,6 @@ static int register_node(struct unicam_d
+ 		unicam_err(unicam, "Unable to allocate dummy buffer.\n");
+ 		return -ENOMEM;
+ 	}
+-
+-	if (pad_id == METADATA_PAD) {
+-		v4l2_disable_ioctl(vdev, VIDIOC_DQEVENT);
+-		v4l2_disable_ioctl(vdev, VIDIOC_SUBSCRIBE_EVENT);
+-		v4l2_disable_ioctl(vdev, VIDIOC_UNSUBSCRIBE_EVENT);
+-	}
+ 	if (pad_id == METADATA_PAD ||
+ 	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0288-media-bcm2835-unicam-Retain-packing-information-on-G.patch b/target/linux/bcm27xx/patches-5.15/950-0288-media-bcm2835-unicam-Retain-packing-information-on-G.patch
new file mode 100644
index 0000000000..60b8025374
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0288-media-bcm2835-unicam-Retain-packing-information-on-G.patch
@@ -0,0 +1,48 @@
+From 6f1696959ba011cda3138d0dac6ed587282606b6 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 19 May 2020 11:46:47 +0100
+Subject: [PATCH] media: bcm2835-unicam: Retain packing information on
+ G_FMT
+
+The change to retrieve the pixel format always on g_fmt didn't
+check whether the native or unpacked version of the format
+had been requested, and always returned the packed one.
+Correct this so that the packing setting is retained whereever
+possible.
+
+Fixes "9d59e89 media: bcm2835-unicam: Re-fetch mbus code from subdev
+on a g_fmt call"
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 19 +++++++++++++++++--
+ 1 file changed, 17 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -980,8 +980,23 @@ static int unicam_g_fmt_vid_cap(struct f
+ 	if (!fmt)
+ 		return -EINVAL;
+ 
+-	node->fmt = fmt;
+-	node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++	if (node->fmt != fmt) {
++		/*
++		 * The sensor format has changed so the pixelformat needs to
++		 * be updated. Try and retain the packed/unpacked choice if
++		 * at all possible.
++		 */
++		if (node->fmt->repacked_fourcc ==
++						node->v_fmt.fmt.pix.pixelformat)
++			/* Using the repacked format */
++			node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
++		else
++			/* Using the native format */
++			node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
++
++		node->fmt = fmt;
++	}
++
+ 	*f = node->v_fmt;
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0289-media-bcm2835-unicam-change-minimum-number-of-vb2_qu.patch b/target/linux/bcm27xx/patches-5.15/950-0289-media-bcm2835-unicam-change-minimum-number-of-vb2_qu.patch
new file mode 100644
index 0000000000..793e053a5a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0289-media-bcm2835-unicam-change-minimum-number-of-vb2_qu.patch
@@ -0,0 +1,28 @@
+From eb66635b13ac4eb7b136911e53d90c1bdf059291 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 28 May 2020 11:09:48 +0100
+Subject: [PATCH] media: bcm2835-unicam: change minimum number of
+ vb2_queue buffers to 1
+
+Since the unicam driver was modified to write to a dummy buffer when no
+user-supplied buffer is available, it can now write to and return a
+buffer even when there's only a single one. Enable this by changing the
+min_buffers_needed in the vb2_queue; it will be useful for enabling
+still captures without allocating more memory than absolutely necessary.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -2428,7 +2428,7 @@ static int register_node(struct unicam_d
+ 	q->buf_struct_size = sizeof(struct unicam_buffer);
+ 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ 	q->lock = &node->lock;
+-	q->min_buffers_needed = 2;
++	q->min_buffers_needed = 1;
+ 	q->dev = &unicam->pdev->dev;
+ 
+ 	ret = vb2_queue_init(q);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0290-staging-fbtft-Add-support-for-display-variants.patch b/target/linux/bcm27xx/patches-5.15/950-0290-staging-fbtft-Add-support-for-display-variants.patch
new file mode 100644
index 0000000000..ec3b301be1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0290-staging-fbtft-Add-support-for-display-variants.patch
@@ -0,0 +1,205 @@
+From 690abea99755b8b283313793d12942cdfa618838 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 1 Sep 2020 18:15:27 +0100
+Subject: [PATCH] staging/fbtft: Add support for display variants
+
+Display variants are intended as a replacement for the now-deleted
+fbtft_device drivers. Drivers can register additional compatible
+strings with a custom callback that can make the required changes
+to the fbtft_display structure.
+
+Start the ball rolling by adding adafruit18, adafruit18_green and
+sainsmart18 displays.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/staging/fbtft/fb_st7735r.c | 38 +++++++++++++++++++++++++++++-
+ drivers/staging/fbtft/fbtft-core.c | 16 ++++++++++++-
+ drivers/staging/fbtft/fbtft.h      | 28 +++++++++++++++++-----
+ 3 files changed, 74 insertions(+), 8 deletions(-)
+
+--- a/drivers/staging/fbtft/fb_st7735r.c
++++ b/drivers/staging/fbtft/fb_st7735r.c
+@@ -16,6 +16,10 @@
+ #define DEFAULT_GAMMA   "0F 1A 0F 18 2F 28 20 22 1F 1B 23 37 00 07 02 10\n" \
+ 			"0F 1B 0F 17 33 2C 29 2E 30 30 39 3F 00 07 03 10"
+ 
++#define ADAFRUIT18_GAMMA \
++			"02 1c 07 12 37 32 29 2d 29 25 2B 39 00 01 03 10\n" \
++			"03 1d 07 06 2E 2C 29 2D 2E 2E 37 3F 00 00 02 10"
++
+ static const s16 default_init_sequence[] = {
+ 	-1, MIPI_DCS_SOFT_RESET,
+ 	-2, 150,                               /* delay */
+@@ -94,6 +98,14 @@ static void set_addr_win(struct fbtft_pa
+ 	write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
+ }
+ 
++static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par,
++					      int xs, int ys, int xe, int ye)
++{
++	write_reg(par, 0x2A, 0, xs + 2, 0, xe + 2);
++	write_reg(par, 0x2B, 0, ys + 1, 0, ye + 1);
++	write_reg(par, 0x2C);
++}
++
+ #define MY BIT(7)
+ #define MX BIT(6)
+ #define MV BIT(5)
+@@ -174,12 +186,36 @@ static struct fbtft_display display = {
+ 	},
+ };
+ 
+-FBTFT_REGISTER_DRIVER(DRVNAME, "sitronix,st7735r", &display);
++int variant_adafruit18(struct fbtft_display *display)
++{
++	display->gamma = ADAFRUIT18_GAMMA;
++	return 0;
++}
++
++int variant_adafruit18_green(struct fbtft_display *display)
++{
++	display->gamma = ADAFRUIT18_GAMMA;
++	display->fbtftops.set_addr_win = adafruit18_green_tab_set_addr_win;
++	return 0;
++}
++
++FBTFT_REGISTER_DRIVER_START(&display)
++FBTFT_COMPATIBLE("sitronix,st7735r")
++FBTFT_COMPATIBLE("fbtft,sainsmart18")
++FBTFT_VARIANT_COMPATIBLE("fbtft,adafruit18", variant_adafruit18)
++FBTFT_VARIANT_COMPATIBLE("fbtft,adafruit18_green", variant_adafruit18_green)
++FBTFT_REGISTER_DRIVER_END(DRVNAME, &display);
+ 
+ MODULE_ALIAS("spi:" DRVNAME);
+ MODULE_ALIAS("platform:" DRVNAME);
+ MODULE_ALIAS("spi:st7735r");
+ MODULE_ALIAS("platform:st7735r");
++MODULE_ALIAS("spi:sainsmart18");
++MODULE_ALIAS("platform:sainsmart");
++MODULE_ALIAS("spi:adafruit18");
++MODULE_ALIAS("platform:adafruit18");
++MODULE_ALIAS("spi:adafruit18_green");
++MODULE_ALIAS("platform:adafruit18_green");
+ 
+ MODULE_DESCRIPTION("FB driver for the ST7735R LCD Controller");
+ MODULE_AUTHOR("Noralf Tronnes");
+--- a/drivers/staging/fbtft/fbtft-core.c
++++ b/drivers/staging/fbtft/fbtft-core.c
+@@ -24,6 +24,8 @@
+ #include <linux/platform_device.h>
+ #include <linux/property.h>
+ #include <linux/spinlock.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
+ 
+ #include <video/mipi_display.h>
+ 
+@@ -1184,6 +1186,7 @@ static struct fbtft_platform_data *fbtft
+  * @display: Display properties
+  * @sdev: SPI device
+  * @pdev: Platform device
++ * @dt_ids: Compatible string table
+  *
+  * Allocates, initializes and registers a framebuffer
+  *
+@@ -1193,12 +1196,15 @@ static struct fbtft_platform_data *fbtft
+  */
+ int fbtft_probe_common(struct fbtft_display *display,
+ 		       struct spi_device *sdev,
+-		       struct platform_device *pdev)
++		       struct platform_device *pdev,
++		       const struct of_device_id *dt_ids)
+ {
+ 	struct device *dev;
+ 	struct fb_info *info;
+ 	struct fbtft_par *par;
+ 	struct fbtft_platform_data *pdata;
++	const struct of_device_id *match;
++	int (*variant)(struct fbtft_display *);
+ 	int ret;
+ 
+ 	if (sdev)
+@@ -1214,6 +1220,14 @@ int fbtft_probe_common(struct fbtft_disp
+ 		pdata = fbtft_properties_read(dev);
+ 		if (IS_ERR(pdata))
+ 			return PTR_ERR(pdata);
++		match = of_match_device(dt_ids, dev);
++		if (match && match->data) {
++			/* apply the variant */
++			variant = match->data;
++			ret = (*variant)(display);
++			if (ret)
++				return ret;
++		}
+ 	}
+ 
+ 	info = fbtft_framebuffer_alloc(display, dev, pdata);
+--- a/drivers/staging/fbtft/fbtft.h
++++ b/drivers/staging/fbtft/fbtft.h
+@@ -251,7 +251,8 @@ void fbtft_register_backlight(struct fbt
+ void fbtft_unregister_backlight(struct fbtft_par *par);
+ int fbtft_init_display(struct fbtft_par *par);
+ int fbtft_probe_common(struct fbtft_display *display, struct spi_device *sdev,
+-		       struct platform_device *pdev);
++		       struct platform_device *pdev,
++		       const struct of_device_id *dt_ids);
+ int fbtft_remove_common(struct device *dev, struct fb_info *info);
+ 
+ /* fbtft-io.c */
+@@ -272,11 +273,13 @@ void fbtft_write_reg8_bus9(struct fbtft_
+ void fbtft_write_reg16_bus8(struct fbtft_par *par, int len, ...);
+ void fbtft_write_reg16_bus16(struct fbtft_par *par, int len, ...);
+ 
+-#define FBTFT_REGISTER_DRIVER(_name, _compatible, _display)                \
++#define FBTFT_REGISTER_DRIVER_START(_display)                              \
++									   \
++static const struct of_device_id dt_ids[];                                 \
+ 									   \
+ static int fbtft_driver_probe_spi(struct spi_device *spi)                  \
+ {                                                                          \
+-	return fbtft_probe_common(_display, spi, NULL);                    \
++	return fbtft_probe_common(_display, spi, NULL, dt_ids);	           \
+ }                                                                          \
+ 									   \
+ static int fbtft_driver_remove_spi(struct spi_device *spi)                 \
+@@ -288,7 +291,7 @@ static int fbtft_driver_remove_spi(struc
+ 									   \
+ static int fbtft_driver_probe_pdev(struct platform_device *pdev)           \
+ {                                                                          \
+-	return fbtft_probe_common(_display, NULL, pdev);                   \
++	return fbtft_probe_common(_display, NULL, pdev, dt_ids);           \
+ }                                                                          \
+ 									   \
+ static int fbtft_driver_remove_pdev(struct platform_device *pdev)          \
+@@ -298,8 +301,16 @@ static int fbtft_driver_remove_pdev(stru
+ 	return fbtft_remove_common(&pdev->dev, info);                      \
+ }                                                                          \
+ 									   \
+-static const struct of_device_id dt_ids[] = {                              \
+-	{ .compatible = _compatible },                                     \
++static const struct of_device_id dt_ids[] = {
++
++#define FBTFT_COMPATIBLE(_compatible)                                      \
++	{ .compatible = _compatible },
++
++#define FBTFT_VARIANT_COMPATIBLE(_compatible, _variant)                    \
++	{ .compatible = _compatible, .data = _variant },
++
++#define FBTFT_REGISTER_DRIVER_END(_name, _display)                         \
++									   \
+ 	{},                                                                \
+ };                                                                         \
+ 									   \
+@@ -347,6 +358,11 @@ static void __exit fbtft_driver_module_e
+ module_init(fbtft_driver_module_init);                                     \
+ module_exit(fbtft_driver_module_exit);
+ 
++#define FBTFT_REGISTER_DRIVER(_name, _compatible, _display)                \
++	FBTFT_REGISTER_DRIVER_START(_display)                              \
++	FBTFT_COMPATIBLE(_compatible)                                      \
++	FBTFT_REGISTER_DRIVER_END(_name, _display)
++
+ /* Debug macros */
+ 
+ /* shorthand debug levels */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0291-rpivid_h265-Fix-width-height-typo.patch b/target/linux/bcm27xx/patches-5.15/950-0291-rpivid_h265-Fix-width-height-typo.patch
new file mode 100644
index 0000000000..8ddebeeedb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0291-rpivid_h265-Fix-width-height-typo.patch
@@ -0,0 +1,21 @@
+From c8ff5702a2f40ecdd9915328a906002351c1e072 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Mon, 21 Sep 2020 14:02:44 +0100
+Subject: [PATCH] rpivid_h265: Fix width/height typo
+
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/staging/media/rpivid/rpivid_h265.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -2178,7 +2178,7 @@ static int rpivid_h265_start(struct rpiv
+ 	if (w > 4096)
+ 		w = 4096;
+ 	if (h == 0)
+-		w = 1088;
++		h = 1088;
+ 	if (h > 4096)
+ 		h = 4096;
+ 	wxh = w * h;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0292-net-bcmgenet-Reset-RBUF-on-first-open.patch b/target/linux/bcm27xx/patches-5.15/950-0292-net-bcmgenet-Reset-RBUF-on-first-open.patch
new file mode 100644
index 0000000000..06f757ad9d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0292-net-bcmgenet-Reset-RBUF-on-first-open.patch
@@ -0,0 +1,70 @@
+From 87bb6f0edf9a4a14d9b41bcfe97216f74f730b43 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 25 Sep 2020 15:07:23 +0100
+Subject: [PATCH] net: bcmgenet: Reset RBUF on first open
+
+If the RBUF logic is not reset when the kernel starts then there
+may be some data left over from any network boot loader. If the
+64-byte packet headers are enabled then this can be fatal.
+
+Extend bcmgenet_dma_disable to do perform the reset, but not when
+called from bcmgenet_resume in order to preserve a wake packet.
+
+N.B. This different handling of resume is just based on a hunch -
+why else wouldn't one reset the RBUF as well as the TBUF? If this
+isn't the case then it's easy to change the patch to make the RBUF
+reset unconditional.
+
+See: https://github.com/raspberrypi/linux/issues/3850
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/net/ethernet/broadcom/genet/bcmgenet.c | 16 ++++++++++++----
+ 1 file changed, 12 insertions(+), 4 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -3257,7 +3257,7 @@ static void bcmgenet_get_hw_addr(struct
+ }
+ 
+ /* Returns a reusable dma control register value */
+-static u32 bcmgenet_dma_disable(struct bcmgenet_priv *priv)
++static u32 bcmgenet_dma_disable(struct bcmgenet_priv *priv, bool flush_rx)
+ {
+ 	unsigned int i;
+ 	u32 reg;
+@@ -3282,6 +3282,14 @@ static u32 bcmgenet_dma_disable(struct b
+ 	udelay(10);
+ 	bcmgenet_umac_writel(priv, 0, UMAC_TX_FLUSH);
+ 
++	if (flush_rx) {
++	    reg = bcmgenet_rbuf_ctrl_get(priv);
++	    bcmgenet_rbuf_ctrl_set(priv, reg | BIT(0));
++	    udelay(10);
++	    bcmgenet_rbuf_ctrl_set(priv, reg);
++	    udelay(10);
++	}
++
+ 	return dma_ctrl;
+ }
+ 
+@@ -3345,8 +3353,8 @@ static int bcmgenet_open(struct net_devi
+ 
+ 	bcmgenet_set_hw_addr(priv, dev->dev_addr);
+ 
+-	/* Disable RX/TX DMA and flush TX queues */
+-	dma_ctrl = bcmgenet_dma_disable(priv);
++	/* Disable RX/TX DMA and flush TX and RX queues */
++	dma_ctrl = bcmgenet_dma_disable(priv, true);
+ 
+ 	/* Reinitialize TDMA and RDMA and SW housekeeping */
+ 	ret = bcmgenet_init_dma(priv);
+@@ -4200,7 +4208,7 @@ static int bcmgenet_resume(struct device
+ 			bcmgenet_hfb_create_rxnfc_filter(priv, rule);
+ 
+ 	/* Disable RX/TX DMA and flush TX queues */
+-	dma_ctrl = bcmgenet_dma_disable(priv);
++	dma_ctrl = bcmgenet_dma_disable(priv, false);
+ 
+ 	/* Reinitialize TDMA and RDMA and SW housekeeping */
+ 	ret = bcmgenet_init_dma(priv);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0293-char-Add-broadcom-char-drivers-back-to-build-files.patch b/target/linux/bcm27xx/patches-5.15/950-0293-char-Add-broadcom-char-drivers-back-to-build-files.patch
new file mode 100644
index 0000000000..67c438ff2b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0293-char-Add-broadcom-char-drivers-back-to-build-files.patch
@@ -0,0 +1,30 @@
+From f30f19d3ecb7c592e76f134e07863d09518e23ab Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Mon, 28 Sep 2020 20:23:30 +0100
+Subject: [PATCH] char: Add broadcom char drivers back to build files
+
+See: https://github.com/raspberrypi/linux/issues/3875
+Signed-off-by: popcornmix <popcornmix@gmail.com>
+---
+ drivers/char/Kconfig  | 2 ++
+ drivers/char/Makefile | 1 +
+ 2 files changed, 3 insertions(+)
+
+--- a/drivers/char/Kconfig
++++ b/drivers/char/Kconfig
+@@ -5,6 +5,8 @@
+ 
+ menu "Character devices"
+ 
++source "drivers/char/broadcom/Kconfig"
++
+ source "drivers/tty/Kconfig"
+ 
+ config TTY_PRINTK
+--- a/drivers/char/Makefile
++++ b/drivers/char/Makefile
+@@ -46,3 +46,4 @@ obj-$(CONFIG_PS3_FLASH)		+= ps3flash.o
+ obj-$(CONFIG_XILLYBUS_CLASS)	+= xillybus/
+ obj-$(CONFIG_POWERNV_OP_PANEL)	+= powernv-op-panel.o
+ obj-$(CONFIG_ADI)		+= adi.o
++obj-$(CONFIG_BRCM_CHAR_DRIVERS) += broadcom/
diff --git a/target/linux/bcm27xx/patches-5.15/950-0294-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch b/target/linux/bcm27xx/patches-5.15/950-0294-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch
new file mode 100644
index 0000000000..93a3b79413
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0294-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch
@@ -0,0 +1,33 @@
+From 6c10d1142ad073622d338f20aa2e44b2d41927ce Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Wed, 7 Oct 2020 15:09:29 +0100
+Subject: [PATCH] dwc_otg: initialise sched_frame for periodic QHs that
+ were parked
+
+If a periodic QH has no remaining QTDs, then it is removed from all
+periodic schedules. When re-adding, initialise the sched_frame and
+start_split_frame from the current value of the frame counter.
+
+See https://bugs.launchpad.net/raspbian/+bug/1819560
+and
+ https://github.com/raspberrypi/linux/issues/3883
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
+@@ -689,7 +689,11 @@ int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * h
+ 				     &qh->qh_list_entry);
+ 		//hcd->fiq_state->kick_np_queues = 1;
+ 	} else {
++		/* If the QH wasn't in a schedule, then sched_frame is stale. */
++		qh->sched_frame = dwc_frame_num_inc(dwc_otg_hcd_get_frame_number(hcd),
++							SCHEDULE_SLOP);
+ 		status = schedule_periodic(hcd, qh);
++		qh->start_split_frame = qh->sched_frame;
+ 		if ( !hcd->periodic_qh_count ) {
+ 			intr_mask.b.sofintr = 1;
+ 			if (fiq_enable) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0295-staging-bcm2835-camera-Replace-deprecated-V4L2_PIX_F.patch b/target/linux/bcm27xx/patches-5.15/950-0295-staging-bcm2835-camera-Replace-deprecated-V4L2_PIX_F.patch
new file mode 100644
index 0000000000..75a76c02d1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0295-staging-bcm2835-camera-Replace-deprecated-V4L2_PIX_F.patch
@@ -0,0 +1,30 @@
+From de2eb484cef57565eaaa727af25b609b5b01b513 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 8 Oct 2020 15:35:14 +0100
+Subject: [PATCH] staging: bcm2835-camera: Replace deprecated
+ V4L2_PIX_FMT_BGR32
+
+V4L2_PIX_FMT_BGR32 is deprecated as it is ambiguous over where
+the alpha byte is. Cheese/GStreamer appear to get it wrong for
+one, and qv4l2 gets red and blue swapped.
+
+Swap to the newer V4L2_PIX_FMT_BGRX32 format.
+
+https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=267736&p=1738912
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -178,7 +178,7 @@ static struct mmal_fmt formats[] = {
+ 		.ybbp = 1,
+ 		.remove_padding = 1,
+ 	}, {
+-		.fourcc = V4L2_PIX_FMT_BGR32,
++		.fourcc = V4L2_PIX_FMT_BGRX32,
+ 		.mmal = MMAL_ENCODING_BGRA,
+ 		.depth = 32,
+ 		.mmal_component = COMP_CAMERA,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0296-staging-vc04_services-Add-new-vc-sm-cma-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0296-staging-vc04_services-Add-new-vc-sm-cma-driver.patch
new file mode 100644
index 0000000000..d7c5eb73c8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0296-staging-vc04_services-Add-new-vc-sm-cma-driver.patch
@@ -0,0 +1,2926 @@
+From 30f98880c17b2ce402db80ff2f0de0c16484b28d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 8 Oct 2020 18:49:52 +0100
+Subject: [PATCH] staging: vc04_services: Add new vc-sm-cma driver
+
+Add Broadcom VideoCore Shared Memory support.
+
+This new driver allows contiguous memory blocks to be imported
+into the VideoCore VPU memory map, and manages the lifetime of
+those objects, only releasing the source dmabuf once the VPU has
+confirmed it has finished with it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/Kconfig         |    2 +
+ drivers/staging/vc04_services/Makefile        |    1 +
+ .../include/linux/broadcom/vc_sm_cma_ioctl.h  |  114 ++
+ .../staging/vc04_services/vc-sm-cma/Kconfig   |   10 +
+ .../staging/vc04_services/vc-sm-cma/Makefile  |   12 +
+ drivers/staging/vc04_services/vc-sm-cma/TODO  |    1 +
+ .../staging/vc04_services/vc-sm-cma/vc_sm.c   | 1725 +++++++++++++++++
+ .../staging/vc04_services/vc-sm-cma/vc_sm.h   |   84 +
+ .../vc04_services/vc-sm-cma/vc_sm_cma_vchi.c  |  503 +++++
+ .../vc04_services/vc-sm-cma/vc_sm_cma_vchi.h  |   63 +
+ .../vc04_services/vc-sm-cma/vc_sm_defs.h      |  297 +++
+ .../vc04_services/vc-sm-cma/vc_sm_knl.h       |   28 +
+ 12 files changed, 2840 insertions(+)
+ create mode 100644 drivers/staging/vc04_services/include/linux/broadcom/vc_sm_cma_ioctl.h
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/Kconfig
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/Makefile
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/TODO
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm.h
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.h
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_defs.h
+ create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h
+
+--- a/drivers/staging/vc04_services/Kconfig
++++ b/drivers/staging/vc04_services/Kconfig
+@@ -43,6 +43,8 @@ source "drivers/staging/vc04_services/bc
+ 
+ source "drivers/staging/vc04_services/bcm2835-camera/Kconfig"
+ 
++source "drivers/staging/vc04_services/vc-sm-cma/Kconfig"
++
+ source "drivers/staging/vc04_services/vchiq-mmal/Kconfig"
+ 
+ endif
+--- a/drivers/staging/vc04_services/Makefile
++++ b/drivers/staging/vc04_services/Makefile
+@@ -14,6 +14,7 @@ endif
+ obj-$(CONFIG_SND_BCM2835)		+= bcm2835-audio/
+ obj-$(CONFIG_VIDEO_BCM2835)		+= bcm2835-camera/
+ obj-$(CONFIG_BCM2835_VCHIQ_MMAL)	+= vchiq-mmal/
++obj-$(CONFIG_BCM_VC_SM_CMA)		+= vc-sm-cma/
+ 
+ ccflags-y += -I $(srctree)/$(src)/include
+ 
+--- /dev/null
++++ b/drivers/staging/vc04_services/include/linux/broadcom/vc_sm_cma_ioctl.h
+@@ -0,0 +1,114 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++
++/*
++ * Copyright 2019 Raspberry Pi (Trading) Ltd.  All rights reserved.
++ *
++ * Based on vmcs_sm_ioctl.h Copyright Broadcom Corporation.
++ */
++
++#ifndef __VC_SM_CMA_IOCTL_H
++#define __VC_SM_CMA_IOCTL_H
++
++/* ---- Include Files ---------------------------------------------------- */
++
++#if defined(__KERNEL__)
++#include <linux/types.h>	/* Needed for standard types */
++#else
++#include <stdint.h>
++#endif
++
++#include <linux/ioctl.h>
++
++/* ---- Constants and Types ---------------------------------------------- */
++
++#define VC_SM_CMA_RESOURCE_NAME               32
++#define VC_SM_CMA_RESOURCE_NAME_DEFAULT       "sm-host-resource"
++
++/* Type define used to create unique IOCTL number */
++#define VC_SM_CMA_MAGIC_TYPE                  'J'
++
++/* IOCTL commands on /dev/vc-sm-cma */
++enum vc_sm_cma_cmd_e {
++	VC_SM_CMA_CMD_ALLOC = 0x5A,	/* Start at 0x5A arbitrarily */
++
++	VC_SM_CMA_CMD_IMPORT_DMABUF,
++
++	VC_SM_CMA_CMD_CLEAN_INVALID2,
++
++	VC_SM_CMA_CMD_LAST	/* Do not delete */
++};
++
++/* Cache type supported, conveniently matches the user space definition in
++ * user-vcsm.h.
++ */
++enum vc_sm_cma_cache_e {
++	VC_SM_CMA_CACHE_NONE,
++	VC_SM_CMA_CACHE_HOST,
++	VC_SM_CMA_CACHE_VC,
++	VC_SM_CMA_CACHE_BOTH,
++};
++
++/* IOCTL Data structures */
++struct vc_sm_cma_ioctl_alloc {
++	/* user -> kernel */
++	__u32 size;
++	__u32 num;
++	__u32 cached;		/* enum vc_sm_cma_cache_e */
++	__u32 pad;
++	__u8 name[VC_SM_CMA_RESOURCE_NAME];
++
++	/* kernel -> user */
++	__s32 handle;
++	__u32 vc_handle;
++	__u64 dma_addr;
++};
++
++struct vc_sm_cma_ioctl_import_dmabuf {
++	/* user -> kernel */
++	__s32 dmabuf_fd;
++	__u32 cached;		/* enum vc_sm_cma_cache_e */
++	__u8 name[VC_SM_CMA_RESOURCE_NAME];
++
++	/* kernel -> user */
++	__s32 handle;
++	__u32 vc_handle;
++	__u32 size;
++	__u32 pad;
++	__u64 dma_addr;
++};
++
++/*
++ * Cache functions to be set to struct vc_sm_cma_ioctl_clean_invalid2
++ * invalidate_mode.
++ */
++#define VC_SM_CACHE_OP_NOP       0x00
++#define VC_SM_CACHE_OP_INV       0x01
++#define VC_SM_CACHE_OP_CLEAN     0x02
++#define VC_SM_CACHE_OP_FLUSH     0x03
++
++struct vc_sm_cma_ioctl_clean_invalid2 {
++	__u32 op_count;
++	__u32 pad;
++	struct vc_sm_cma_ioctl_clean_invalid_block {
++		__u32 invalidate_mode;
++		__u32 block_count;
++		void *  __user start_address;
++		__u32 block_size;
++		__u32 inter_block_stride;
++	} s[0];
++};
++
++/* IOCTL numbers */
++#define VC_SM_CMA_IOCTL_MEM_ALLOC\
++	_IOR(VC_SM_CMA_MAGIC_TYPE, VC_SM_CMA_CMD_ALLOC,\
++	 struct vc_sm_cma_ioctl_alloc)
++
++#define VC_SM_CMA_IOCTL_MEM_IMPORT_DMABUF\
++	_IOR(VC_SM_CMA_MAGIC_TYPE, VC_SM_CMA_CMD_IMPORT_DMABUF,\
++	 struct vc_sm_cma_ioctl_import_dmabuf)
++
++#define VC_SM_CMA_IOCTL_MEM_CLEAN_INVALID2\
++	_IOR(VC_SM_CMA_MAGIC_TYPE, VC_SM_CMA_CMD_CLEAN_INVALID2,\
++	 struct vc_sm_cma_ioctl_clean_invalid2)
++
++#endif /* __VC_SM_CMA_IOCTL_H */
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/Kconfig
+@@ -0,0 +1,10 @@
++config BCM_VC_SM_CMA
++	tristate "VideoCore Shared Memory (CMA) driver"
++	select BCM2835_VCHIQ
++	select RBTREE
++	select DMA_SHARED_BUFFER
++	help
++	  Say Y here to enable the shared memory interface that
++	  supports sharing dmabufs with VideoCore.
++	  This operates over the VCHIQ interface to a service
++	  running on VideoCore.
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/Makefile
+@@ -0,0 +1,12 @@
++ccflags-y += \
++	-I$(srctree)/$(src)/../ \
++	-I$(srctree)/$(src)/../interface/vchiq_arm\
++	-I$(srctree)/$(src)/../include
++
++ccflags-y += \
++	-D__VCCOREVER__=0
++
++vc-sm-cma-$(CONFIG_BCM_VC_SM_CMA) := \
++	vc_sm.o vc_sm_cma_vchi.o
++
++obj-$(CONFIG_BCM_VC_SM_CMA) += vc-sm-cma.o
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/TODO
+@@ -0,0 +1 @@
++No currently outstanding tasks except some clean-up.
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
+@@ -0,0 +1,1725 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * VideoCore Shared Memory driver using CMA.
++ *
++ * Copyright: 2018, Raspberry Pi (Trading) Ltd
++ * Dave Stevenson <dave.stevenson@raspberrypi.org>
++ *
++ * Based on vmcs_sm driver from Broadcom Corporation for some API,
++ * and taking some code for buffer allocation and dmabuf handling from
++ * videobuf2.
++ *
++ *
++ * This driver has 3 main uses:
++ * 1) Allocating buffers for the kernel or userspace that can be shared with the
++ *    VPU.
++ * 2) Importing dmabufs from elsewhere for sharing with the VPU.
++ * 3) Allocating buffers for use by the VPU.
++ *
++ * In the first and second cases the native handle is a dmabuf. Releasing the
++ * resource inherently comes from releasing the dmabuf, and this will trigger
++ * unmapping on the VPU. The underlying allocation and our buffer structure are
++ * retained until the VPU has confirmed that it has finished with it.
++ *
++ * For the VPU allocations the VPU is responsible for triggering the release,
++ * and therefore the released message decrements the dma_buf refcount (with the
++ * VPU mapping having already been marked as released).
++ */
++
++/* ---- Include Files ----------------------------------------------------- */
++#include <linux/cdev.h>
++#include <linux/device.h>
++#include <linux/debugfs.h>
++#include <linux/dma-mapping.h>
++#include <linux/dma-buf.h>
++#include <linux/errno.h>
++#include <linux/fs.h>
++#include <linux/kernel.h>
++#include <linux/list.h>
++#include <linux/miscdevice.h>
++#include <linux/module.h>
++#include <linux/mm.h>
++#include <linux/of_device.h>
++#include <linux/platform_device.h>
++#include <linux/proc_fs.h>
++#include <linux/slab.h>
++#include <linux/seq_file.h>
++#include <linux/syscalls.h>
++#include <linux/types.h>
++#include <asm/cacheflush.h>
++
++#include "vchiq_connected.h"
++#include "vc_sm_cma_vchi.h"
++
++#include "vc_sm.h"
++#include "vc_sm_knl.h"
++#include <linux/broadcom/vc_sm_cma_ioctl.h>
++
++/* ---- Private Constants and Types --------------------------------------- */
++
++#define DEVICE_NAME		"vcsm-cma"
++#define DEVICE_MINOR		0
++
++#define VC_SM_RESOURCE_NAME_DEFAULT       "sm-host-resource"
++
++#define VC_SM_DIR_ROOT_NAME	"vcsm-cma"
++#define VC_SM_STATE		"state"
++
++/* Private file data associated with each opened device. */
++struct vc_sm_privdata_t {
++	pid_t pid;                      /* PID of creator. */
++
++	int restart_sys;		/* Tracks restart on interrupt. */
++	enum vc_sm_msg_type int_action;	/* Interrupted action. */
++	u32 int_trans_id;		/* Interrupted transaction. */
++};
++
++typedef int (*VC_SM_SHOW) (struct seq_file *s, void *v);
++struct sm_pde_t {
++	VC_SM_SHOW show;          /* Debug fs function hookup. */
++	struct dentry *dir_entry; /* Debug fs directory entry. */
++	void *priv_data;          /* Private data */
++};
++
++/* Global state information. */
++struct sm_state_t {
++	struct platform_device *pdev;
++
++	struct miscdevice misc_dev;
++
++	struct sm_instance *sm_handle;	/* Handle for videocore service. */
++
++	spinlock_t kernelid_map_lock;	/* Spinlock protecting kernelid_map */
++	struct idr kernelid_map;
++
++	struct mutex map_lock;          /* Global map lock. */
++	struct list_head buffer_list;	/* List of buffer. */
++
++	struct vc_sm_privdata_t *data_knl;  /* Kernel internal data tracking. */
++	struct vc_sm_privdata_t *vpu_allocs; /* All allocations from the VPU */
++	struct dentry *dir_root;	/* Debug fs entries root. */
++	struct sm_pde_t dir_state;	/* Debug fs entries state sub-tree. */
++
++	bool require_released_callback;	/* VPU will send a released msg when it
++					 * has finished with a resource.
++					 */
++	u32 int_trans_id;		/* Interrupted transaction. */
++};
++
++struct vc_sm_dma_buf_attachment {
++	struct device *dev;
++	struct sg_table sg_table;
++	struct list_head list;
++	enum dma_data_direction	dma_dir;
++};
++
++/* ---- Private Variables ----------------------------------------------- */
++
++static struct sm_state_t *sm_state;
++static int sm_inited;
++
++/* ---- Private Function Prototypes -------------------------------------- */
++
++/* ---- Private Functions ------------------------------------------------ */
++
++static int get_kernel_id(struct vc_sm_buffer *buffer)
++{
++	int handle;
++
++	spin_lock(&sm_state->kernelid_map_lock);
++	handle = idr_alloc(&sm_state->kernelid_map, buffer, 0, 0, GFP_KERNEL);
++	spin_unlock(&sm_state->kernelid_map_lock);
++
++	return handle;
++}
++
++static struct vc_sm_buffer *lookup_kernel_id(int handle)
++{
++	return idr_find(&sm_state->kernelid_map, handle);
++}
++
++static void free_kernel_id(int handle)
++{
++	spin_lock(&sm_state->kernelid_map_lock);
++	idr_remove(&sm_state->kernelid_map, handle);
++	spin_unlock(&sm_state->kernelid_map_lock);
++}
++
++static int vc_sm_cma_seq_file_show(struct seq_file *s, void *v)
++{
++	struct sm_pde_t *sm_pde;
++
++	sm_pde = (struct sm_pde_t *)(s->private);
++
++	if (sm_pde && sm_pde->show)
++		sm_pde->show(s, v);
++
++	return 0;
++}
++
++static int vc_sm_cma_single_open(struct inode *inode, struct file *file)
++{
++	return single_open(file, vc_sm_cma_seq_file_show, inode->i_private);
++}
++
++static const struct file_operations vc_sm_cma_debug_fs_fops = {
++	.open = vc_sm_cma_single_open,
++	.read = seq_read,
++	.llseek = seq_lseek,
++	.release = single_release,
++};
++
++static int vc_sm_cma_global_state_show(struct seq_file *s, void *v)
++{
++	struct vc_sm_buffer *resource = NULL;
++	int resource_count = 0;
++
++	if (!sm_state)
++		return 0;
++
++	seq_printf(s, "\nVC-ServiceHandle     %p\n", sm_state->sm_handle);
++
++	/* Log all applicable mapping(s). */
++
++	mutex_lock(&sm_state->map_lock);
++	seq_puts(s, "\nResources\n");
++	if (!list_empty(&sm_state->buffer_list)) {
++		list_for_each_entry(resource, &sm_state->buffer_list,
++				    global_buffer_list) {
++			resource_count++;
++
++			seq_printf(s, "\nResource                %p\n",
++				   resource);
++			seq_printf(s, "           NAME         %s\n",
++				   resource->name);
++			seq_printf(s, "           SIZE         %zu\n",
++				   resource->size);
++			seq_printf(s, "           DMABUF       %p\n",
++				   resource->dma_buf);
++			if (resource->imported) {
++				seq_printf(s, "           ATTACH       %p\n",
++					   resource->import.attach);
++				seq_printf(s, "           SGT          %p\n",
++					   resource->import.sgt);
++			} else {
++				seq_printf(s, "           SGT          %p\n",
++					   resource->alloc.sg_table);
++			}
++			seq_printf(s, "           DMA_ADDR     %pad\n",
++				   &resource->dma_addr);
++			seq_printf(s, "           VC_HANDLE     %08x\n",
++				   resource->vc_handle);
++			seq_printf(s, "           VC_MAPPING    %d\n",
++				   resource->vpu_state);
++		}
++	}
++	seq_printf(s, "\n\nTotal resource count:   %d\n\n", resource_count);
++
++	mutex_unlock(&sm_state->map_lock);
++
++	return 0;
++}
++
++/*
++ * Adds a buffer to the private data list which tracks all the allocated
++ * data.
++ */
++static void vc_sm_add_resource(struct vc_sm_privdata_t *privdata,
++			       struct vc_sm_buffer *buffer)
++{
++	mutex_lock(&sm_state->map_lock);
++	list_add(&buffer->global_buffer_list, &sm_state->buffer_list);
++	mutex_unlock(&sm_state->map_lock);
++
++	pr_debug("[%s]: added buffer %p (name %s, size %zu)\n",
++		 __func__, buffer, buffer->name, buffer->size);
++}
++
++/*
++ * Cleans up imported dmabuf.
++ */
++static void vc_sm_clean_up_dmabuf(struct vc_sm_buffer *buffer)
++{
++	if (!buffer->imported)
++		return;
++
++	/* Handle cleaning up imported dmabufs */
++	mutex_lock(&buffer->lock);
++	if (buffer->import.sgt) {
++		dma_buf_unmap_attachment(buffer->import.attach,
++					 buffer->import.sgt,
++					 DMA_BIDIRECTIONAL);
++		buffer->import.sgt = NULL;
++	}
++	if (buffer->import.attach) {
++		dma_buf_detach(buffer->dma_buf, buffer->import.attach);
++		buffer->import.attach = NULL;
++	}
++	mutex_unlock(&buffer->lock);
++}
++
++/*
++ * Instructs VPU to decrement the refcount on a buffer.
++ */
++static void vc_sm_vpu_free(struct vc_sm_buffer *buffer)
++{
++	if (buffer->vc_handle && buffer->vpu_state == VPU_MAPPED) {
++		struct vc_sm_free_t free = { buffer->vc_handle, 0 };
++		int status = vc_sm_cma_vchi_free(sm_state->sm_handle, &free,
++					     &sm_state->int_trans_id);
++		if (status != 0 && status != -EINTR) {
++			pr_err("[%s]: failed to free memory on videocore (status: %u, trans_id: %u)\n",
++			       __func__, status, sm_state->int_trans_id);
++		}
++
++		if (sm_state->require_released_callback) {
++			/* Need to wait for the VPU to confirm the free. */
++
++			/* Retain a reference on this until the VPU has
++			 * released it
++			 */
++			buffer->vpu_state = VPU_UNMAPPING;
++		} else {
++			buffer->vpu_state = VPU_NOT_MAPPED;
++			buffer->vc_handle = 0;
++		}
++	}
++}
++
++/*
++ * Release an allocation.
++ * All refcounting is done via the dma buf object.
++ *
++ * Must be called with the mutex held. The function will either release the
++ * mutex (if defering the release) or destroy it. The caller must therefore not
++ * reuse the buffer on return.
++ */
++static void vc_sm_release_resource(struct vc_sm_buffer *buffer)
++{
++	pr_debug("[%s]: buffer %p (name %s, size %zu), imported %u\n",
++		 __func__, buffer, buffer->name, buffer->size,
++		 buffer->imported);
++
++	if (buffer->vc_handle) {
++		/* We've sent the unmap request but not had the response. */
++		pr_debug("[%s]: Waiting for VPU unmap response on %p\n",
++			 __func__, buffer);
++		goto defer;
++	}
++	if (buffer->in_use) {
++		/* dmabuf still in use - we await the release */
++		pr_debug("[%s]: buffer %p is still in use\n", __func__, buffer);
++		goto defer;
++	}
++
++	/* Release the allocation (whether imported dmabuf or CMA allocation) */
++	if (buffer->imported) {
++		if (buffer->import.dma_buf)
++			dma_buf_put(buffer->import.dma_buf);
++		else
++			pr_err("%s: Imported dmabuf already been put for buf %p\n",
++			       __func__, buffer);
++		buffer->import.dma_buf = NULL;
++	} else {
++		dma_free_coherent(&sm_state->pdev->dev, buffer->size,
++				  buffer->cookie, buffer->dma_addr);
++	}
++
++	/* Free our buffer. Start by removing it from the list */
++	mutex_lock(&sm_state->map_lock);
++	list_del(&buffer->global_buffer_list);
++	mutex_unlock(&sm_state->map_lock);
++
++	pr_debug("%s: Release our allocation - done\n", __func__);
++	mutex_unlock(&buffer->lock);
++
++	mutex_destroy(&buffer->lock);
++
++	kfree(buffer);
++	return;
++
++defer:
++	mutex_unlock(&buffer->lock);
++}
++
++/* Create support for private data tracking. */
++static struct vc_sm_privdata_t *vc_sm_cma_create_priv_data(pid_t id)
++{
++	char alloc_name[32];
++	struct vc_sm_privdata_t *file_data = NULL;
++
++	/* Allocate private structure. */
++	file_data = kzalloc(sizeof(*file_data), GFP_KERNEL);
++
++	if (!file_data)
++		return NULL;
++
++	snprintf(alloc_name, sizeof(alloc_name), "%d", id);
++
++	file_data->pid = id;
++
++	return file_data;
++}
++
++/* Dma buf operations for use with our own allocations */
++
++static int vc_sm_dma_buf_attach(struct dma_buf *dmabuf,
++				struct dma_buf_attachment *attachment)
++
++{
++	struct vc_sm_dma_buf_attachment *a;
++	struct sg_table *sgt;
++	struct vc_sm_buffer *buf = dmabuf->priv;
++	struct scatterlist *rd, *wr;
++	int ret, i;
++
++	a = kzalloc(sizeof(*a), GFP_KERNEL);
++	if (!a)
++		return -ENOMEM;
++
++	pr_debug("%s dmabuf %p attachment %p\n", __func__, dmabuf, attachment);
++
++	mutex_lock(&buf->lock);
++
++	INIT_LIST_HEAD(&a->list);
++
++	sgt = &a->sg_table;
++
++	/* Copy the buf->base_sgt scatter list to the attachment, as we can't
++	 * map the same scatter list to multiple attachments at the same time.
++	 */
++	ret = sg_alloc_table(sgt, buf->alloc.sg_table->orig_nents, GFP_KERNEL);
++	if (ret) {
++		kfree(a);
++		return -ENOMEM;
++	}
++
++	rd = buf->alloc.sg_table->sgl;
++	wr = sgt->sgl;
++	for (i = 0; i < sgt->orig_nents; ++i) {
++		sg_set_page(wr, sg_page(rd), rd->length, rd->offset);
++		rd = sg_next(rd);
++		wr = sg_next(wr);
++	}
++
++	a->dma_dir = DMA_NONE;
++	attachment->priv = a;
++
++	list_add(&a->list, &buf->attachments);
++	mutex_unlock(&buf->lock);
++
++	return 0;
++}
++
++static void vc_sm_dma_buf_detach(struct dma_buf *dmabuf,
++				 struct dma_buf_attachment *attachment)
++{
++	struct vc_sm_dma_buf_attachment *a = attachment->priv;
++	struct vc_sm_buffer *buf = dmabuf->priv;
++	struct sg_table *sgt;
++
++	pr_debug("%s dmabuf %p attachment %p\n", __func__, dmabuf, attachment);
++	if (!a)
++		return;
++
++	sgt = &a->sg_table;
++
++	/* release the scatterlist cache */
++	if (a->dma_dir != DMA_NONE)
++		dma_unmap_sg(attachment->dev, sgt->sgl, sgt->orig_nents,
++			     a->dma_dir);
++	sg_free_table(sgt);
++
++	mutex_lock(&buf->lock);
++	list_del(&a->list);
++	mutex_unlock(&buf->lock);
++
++	kfree(a);
++}
++
++static struct sg_table *vc_sm_map_dma_buf(struct dma_buf_attachment *attachment,
++					  enum dma_data_direction direction)
++{
++	struct vc_sm_dma_buf_attachment *a = attachment->priv;
++	/* stealing dmabuf mutex to serialize map/unmap operations */
++	struct mutex *lock = &attachment->dmabuf->lock;
++	struct sg_table *table;
++
++	mutex_lock(lock);
++	pr_debug("%s attachment %p\n", __func__, attachment);
++	table = &a->sg_table;
++
++	/* return previously mapped sg table */
++	if (a->dma_dir == direction) {
++		mutex_unlock(lock);
++		return table;
++	}
++
++	/* release any previous cache */
++	if (a->dma_dir != DMA_NONE) {
++		dma_unmap_sg(attachment->dev, table->sgl, table->orig_nents,
++			     a->dma_dir);
++		a->dma_dir = DMA_NONE;
++	}
++
++	/* mapping to the client with new direction */
++	table->nents = dma_map_sg(attachment->dev, table->sgl,
++				  table->orig_nents, direction);
++	if (!table->nents) {
++		pr_err("failed to map scatterlist\n");
++		mutex_unlock(lock);
++		return ERR_PTR(-EIO);
++	}
++
++	a->dma_dir = direction;
++	mutex_unlock(lock);
++
++	pr_debug("%s attachment %p\n", __func__, attachment);
++	return table;
++}
++
++static void vc_sm_unmap_dma_buf(struct dma_buf_attachment *attachment,
++				struct sg_table *table,
++				enum dma_data_direction direction)
++{
++	pr_debug("%s attachment %p\n", __func__, attachment);
++	dma_unmap_sg(attachment->dev, table->sgl, table->nents, direction);
++}
++
++static int vc_sm_dmabuf_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma)
++{
++	struct vc_sm_buffer *buf = dmabuf->priv;
++	int ret;
++
++	pr_debug("%s dmabuf %p, buf %p, vm_start %08lX\n", __func__, dmabuf,
++		 buf, vma->vm_start);
++
++	mutex_lock(&buf->lock);
++
++	/* now map it to userspace */
++	vma->vm_pgoff = 0;
++
++	ret = dma_mmap_coherent(&sm_state->pdev->dev, vma, buf->cookie,
++				buf->dma_addr, buf->size);
++
++	if (ret) {
++		pr_err("Remapping memory failed, error: %d\n", ret);
++		return ret;
++	}
++
++	vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
++
++	mutex_unlock(&buf->lock);
++
++	if (ret)
++		pr_err("%s: failure mapping buffer to userspace\n",
++		       __func__);
++
++	return ret;
++}
++
++static void vc_sm_dma_buf_release(struct dma_buf *dmabuf)
++{
++	struct vc_sm_buffer *buffer;
++
++	if (!dmabuf)
++		return;
++
++	buffer = (struct vc_sm_buffer *)dmabuf->priv;
++
++	mutex_lock(&buffer->lock);
++
++	pr_debug("%s dmabuf %p, buffer %p\n", __func__, dmabuf, buffer);
++
++	buffer->in_use = 0;
++
++	/* Unmap on the VPU */
++	vc_sm_vpu_free(buffer);
++	pr_debug("%s vpu_free done\n", __func__);
++
++	/* Unmap our dma_buf object (the vc_sm_buffer remains until released
++	 * on the VPU).
++	 */
++	vc_sm_clean_up_dmabuf(buffer);
++	pr_debug("%s clean_up dmabuf done\n", __func__);
++
++	/* buffer->lock will be destroyed by vc_sm_release_resource if finished
++	 * with, otherwise unlocked. Do NOT unlock here.
++	 */
++	vc_sm_release_resource(buffer);
++	pr_debug("%s done\n", __func__);
++}
++
++static int vc_sm_dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
++					  enum dma_data_direction direction)
++{
++	struct vc_sm_buffer *buf;
++	struct vc_sm_dma_buf_attachment *a;
++
++	if (!dmabuf)
++		return -EFAULT;
++
++	buf = dmabuf->priv;
++	if (!buf)
++		return -EFAULT;
++
++	mutex_lock(&buf->lock);
++
++	list_for_each_entry(a, &buf->attachments, list) {
++		dma_sync_sg_for_cpu(a->dev, a->sg_table.sgl,
++				    a->sg_table.nents, direction);
++	}
++	mutex_unlock(&buf->lock);
++
++	return 0;
++}
++
++static int vc_sm_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
++					enum dma_data_direction direction)
++{
++	struct vc_sm_buffer *buf;
++	struct vc_sm_dma_buf_attachment *a;
++
++	if (!dmabuf)
++		return -EFAULT;
++	buf = dmabuf->priv;
++	if (!buf)
++		return -EFAULT;
++
++	mutex_lock(&buf->lock);
++
++	list_for_each_entry(a, &buf->attachments, list) {
++		dma_sync_sg_for_device(a->dev, a->sg_table.sgl,
++				       a->sg_table.nents, direction);
++	}
++	mutex_unlock(&buf->lock);
++
++	return 0;
++}
++
++static const struct dma_buf_ops dma_buf_ops = {
++	.map_dma_buf = vc_sm_map_dma_buf,
++	.unmap_dma_buf = vc_sm_unmap_dma_buf,
++	.mmap = vc_sm_dmabuf_mmap,
++	.release = vc_sm_dma_buf_release,
++	.attach = vc_sm_dma_buf_attach,
++	.detach = vc_sm_dma_buf_detach,
++	.begin_cpu_access = vc_sm_dma_buf_begin_cpu_access,
++	.end_cpu_access = vc_sm_dma_buf_end_cpu_access,
++};
++
++/* Dma_buf operations for chaining through to an imported dma_buf */
++
++static
++int vc_sm_import_dma_buf_attach(struct dma_buf *dmabuf,
++				struct dma_buf_attachment *attachment)
++{
++	struct vc_sm_buffer *buf = dmabuf->priv;
++
++	if (!buf->imported)
++		return -EINVAL;
++	return buf->import.dma_buf->ops->attach(buf->import.dma_buf,
++						attachment);
++}
++
++static
++void vc_sm_import_dma_buf_detatch(struct dma_buf *dmabuf,
++				  struct dma_buf_attachment *attachment)
++{
++	struct vc_sm_buffer *buf = dmabuf->priv;
++
++	if (!buf->imported)
++		return;
++	buf->import.dma_buf->ops->detach(buf->import.dma_buf, attachment);
++}
++
++static
++struct sg_table *vc_sm_import_map_dma_buf(struct dma_buf_attachment *attachment,
++					  enum dma_data_direction direction)
++{
++	struct vc_sm_buffer *buf = attachment->dmabuf->priv;
++
++	if (!buf->imported)
++		return NULL;
++	return buf->import.dma_buf->ops->map_dma_buf(attachment,
++						     direction);
++}
++
++static
++void vc_sm_import_unmap_dma_buf(struct dma_buf_attachment *attachment,
++				struct sg_table *table,
++				enum dma_data_direction direction)
++{
++	struct vc_sm_buffer *buf = attachment->dmabuf->priv;
++
++	if (!buf->imported)
++		return;
++	buf->import.dma_buf->ops->unmap_dma_buf(attachment, table, direction);
++}
++
++static
++int vc_sm_import_dmabuf_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma)
++{
++	struct vc_sm_buffer *buf = dmabuf->priv;
++
++	pr_debug("%s: mmap dma_buf %p, buf %p, imported db %p\n", __func__,
++		 dmabuf, buf, buf->import.dma_buf);
++	if (!buf->imported) {
++		pr_err("%s: mmap dma_buf %p- not an imported buffer\n",
++		       __func__, dmabuf);
++		return -EINVAL;
++	}
++	return buf->import.dma_buf->ops->mmap(buf->import.dma_buf, vma);
++}
++
++static
++void vc_sm_import_dma_buf_release(struct dma_buf *dmabuf)
++{
++	struct vc_sm_buffer *buf = dmabuf->priv;
++
++	pr_debug("%s: Relasing dma_buf %p\n", __func__, dmabuf);
++	mutex_lock(&buf->lock);
++	if (!buf->imported)
++		return;
++
++	buf->in_use = 0;
++
++	vc_sm_vpu_free(buf);
++
++	vc_sm_release_resource(buf);
++}
++
++static
++int vc_sm_import_dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
++					  enum dma_data_direction direction)
++{
++	struct vc_sm_buffer *buf = dmabuf->priv;
++
++	if (!buf->imported)
++		return -EINVAL;
++	return buf->import.dma_buf->ops->begin_cpu_access(buf->import.dma_buf,
++							  direction);
++}
++
++static
++int vc_sm_import_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
++					enum dma_data_direction direction)
++{
++	struct vc_sm_buffer *buf = dmabuf->priv;
++
++	if (!buf->imported)
++		return -EINVAL;
++	return buf->import.dma_buf->ops->end_cpu_access(buf->import.dma_buf,
++							  direction);
++}
++
++static const struct dma_buf_ops dma_buf_import_ops = {
++	.map_dma_buf = vc_sm_import_map_dma_buf,
++	.unmap_dma_buf = vc_sm_import_unmap_dma_buf,
++	.mmap = vc_sm_import_dmabuf_mmap,
++	.release = vc_sm_import_dma_buf_release,
++	.attach = vc_sm_import_dma_buf_attach,
++	.detach = vc_sm_import_dma_buf_detatch,
++	.begin_cpu_access = vc_sm_import_dma_buf_begin_cpu_access,
++	.end_cpu_access = vc_sm_import_dma_buf_end_cpu_access,
++};
++
++/* Import a dma_buf to be shared with VC. */
++int
++vc_sm_cma_import_dmabuf_internal(struct vc_sm_privdata_t *private,
++				 struct dma_buf *dma_buf,
++				 int fd,
++				 struct dma_buf **imported_buf)
++{
++	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
++	struct vc_sm_buffer *buffer = NULL;
++	struct vc_sm_import import = { };
++	struct vc_sm_import_result result = { };
++	struct dma_buf_attachment *attach = NULL;
++	struct sg_table *sgt = NULL;
++	dma_addr_t dma_addr;
++	int ret = 0;
++	int status;
++
++	/* Setup our allocation parameters */
++	pr_debug("%s: importing dma_buf %p/fd %d\n", __func__, dma_buf, fd);
++
++	if (fd < 0)
++		get_dma_buf(dma_buf);
++	else
++		dma_buf = dma_buf_get(fd);
++
++	if (!dma_buf)
++		return -EINVAL;
++
++	attach = dma_buf_attach(dma_buf, &sm_state->pdev->dev);
++	if (IS_ERR(attach)) {
++		ret = PTR_ERR(attach);
++		goto error;
++	}
++
++	sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
++	if (IS_ERR(sgt)) {
++		ret = PTR_ERR(sgt);
++		goto error;
++	}
++
++	/* Verify that the address block is contiguous */
++	if (sgt->nents != 1) {
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	/* Allocate local buffer to track this allocation. */
++	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
++	if (!buffer) {
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	import.type = VC_SM_ALLOC_NON_CACHED;
++	dma_addr = sg_dma_address(sgt->sgl);
++	import.addr = (u32)dma_addr;
++	if ((import.addr & 0xC0000000) != 0xC0000000) {
++		pr_err("%s: Expecting an uncached alias for dma_addr %pad\n",
++		       __func__, &dma_addr);
++		import.addr |= 0xC0000000;
++	}
++	import.size = sg_dma_len(sgt->sgl);
++	import.allocator = current->tgid;
++	import.kernel_id = get_kernel_id(buffer);
++
++	memcpy(import.name, VC_SM_RESOURCE_NAME_DEFAULT,
++	       sizeof(VC_SM_RESOURCE_NAME_DEFAULT));
++
++	pr_debug("[%s]: attempt to import \"%s\" data - type %u, addr %pad, size %u.\n",
++		 __func__, import.name, import.type, &dma_addr, import.size);
++
++	/* Allocate the videocore buffer. */
++	status = vc_sm_cma_vchi_import(sm_state->sm_handle, &import, &result,
++				       &sm_state->int_trans_id);
++	if (status == -EINTR) {
++		pr_debug("[%s]: requesting import memory action restart (trans_id: %u)\n",
++			 __func__, sm_state->int_trans_id);
++		ret = -ERESTARTSYS;
++		private->restart_sys = -EINTR;
++		private->int_action = VC_SM_MSG_TYPE_IMPORT;
++		goto error;
++	} else if (status || !result.res_handle) {
++		pr_debug("[%s]: failed to import memory on videocore (status: %u, trans_id: %u)\n",
++			 __func__, status, sm_state->int_trans_id);
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	mutex_init(&buffer->lock);
++	INIT_LIST_HEAD(&buffer->attachments);
++	memcpy(buffer->name, import.name,
++	       min(sizeof(buffer->name), sizeof(import.name) - 1));
++
++	/* Keep track of the buffer we created. */
++	buffer->private = private;
++	buffer->vc_handle = result.res_handle;
++	buffer->size = import.size;
++	buffer->vpu_state = VPU_MAPPED;
++
++	buffer->imported = 1;
++	buffer->import.dma_buf = dma_buf;
++
++	buffer->import.attach = attach;
++	buffer->import.sgt = sgt;
++	buffer->dma_addr = dma_addr;
++	buffer->in_use = 1;
++	buffer->kernel_id = import.kernel_id;
++
++	/*
++	 * We're done - we need to export a new dmabuf chaining through most
++	 * functions, but enabling us to release our own internal references
++	 * here.
++	 */
++	exp_info.ops = &dma_buf_import_ops;
++	exp_info.size = import.size;
++	exp_info.flags = O_RDWR;
++	exp_info.priv = buffer;
++
++	buffer->dma_buf = dma_buf_export(&exp_info);
++	if (IS_ERR(buffer->dma_buf)) {
++		ret = PTR_ERR(buffer->dma_buf);
++		goto error;
++	}
++
++	vc_sm_add_resource(private, buffer);
++
++	*imported_buf = buffer->dma_buf;
++
++	return 0;
++
++error:
++	if (result.res_handle) {
++		struct vc_sm_free_t free = { result.res_handle, 0 };
++
++		vc_sm_cma_vchi_free(sm_state->sm_handle, &free,
++				    &sm_state->int_trans_id);
++	}
++	free_kernel_id(import.kernel_id);
++	kfree(buffer);
++	if (sgt)
++		dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL);
++	if (attach)
++		dma_buf_detach(dma_buf, attach);
++	dma_buf_put(dma_buf);
++	return ret;
++}
++
++static int vc_sm_cma_vpu_alloc(u32 size, u32 align, const char *name,
++			       u32 mem_handle, struct vc_sm_buffer **ret_buffer)
++{
++	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
++	struct vc_sm_buffer *buffer = NULL;
++	struct sg_table *sgt;
++	int aligned_size;
++	int ret = 0;
++
++	/* Align to the user requested align */
++	aligned_size = ALIGN(size, align);
++	/* and then to a page boundary */
++	aligned_size = PAGE_ALIGN(aligned_size);
++
++	if (!aligned_size)
++		return -EINVAL;
++
++	/* Allocate local buffer to track this allocation. */
++	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
++	if (!buffer)
++		return -ENOMEM;
++
++	mutex_init(&buffer->lock);
++	/* Acquire the mutex as vc_sm_release_resource will release it in the
++	 * error path.
++	 */
++	mutex_lock(&buffer->lock);
++
++	buffer->cookie = dma_alloc_coherent(&sm_state->pdev->dev,
++					    aligned_size, &buffer->dma_addr,
++					    GFP_KERNEL);
++	if (!buffer->cookie) {
++		pr_err("[%s]: dma_alloc_coherent alloc of %d bytes failed\n",
++		       __func__, aligned_size);
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	pr_debug("[%s]: alloc of %d bytes success\n",
++		 __func__, aligned_size);
++
++	sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
++	if (!sgt) {
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	ret = dma_get_sgtable(&sm_state->pdev->dev, sgt, buffer->cookie,
++			      buffer->dma_addr, buffer->size);
++	if (ret < 0) {
++		pr_err("failed to get scatterlist from DMA API\n");
++		kfree(sgt);
++		ret = -ENOMEM;
++		goto error;
++	}
++	buffer->alloc.sg_table = sgt;
++
++	INIT_LIST_HEAD(&buffer->attachments);
++
++	memcpy(buffer->name, name,
++	       min(sizeof(buffer->name), strlen(name)));
++
++	exp_info.ops = &dma_buf_ops;
++	exp_info.size = aligned_size;
++	exp_info.flags = O_RDWR;
++	exp_info.priv = buffer;
++
++	buffer->dma_buf = dma_buf_export(&exp_info);
++	if (IS_ERR(buffer->dma_buf)) {
++		ret = PTR_ERR(buffer->dma_buf);
++		goto error;
++	}
++	buffer->dma_addr = (u32)sg_dma_address(buffer->alloc.sg_table->sgl);
++	if ((buffer->dma_addr & 0xC0000000) != 0xC0000000) {
++		pr_warn_once("%s: Expecting an uncached alias for dma_addr %pad\n",
++			     __func__, &buffer->dma_addr);
++		buffer->dma_addr |= 0xC0000000;
++	}
++	buffer->private = sm_state->vpu_allocs;
++
++	buffer->vc_handle = mem_handle;
++	buffer->vpu_state = VPU_MAPPED;
++	buffer->vpu_allocated = 1;
++	buffer->size = size;
++	/*
++	 * Create an ID that will be passed along with our message so
++	 * that when we service the release reply, we can look up which
++	 * resource is being released.
++	 */
++	buffer->kernel_id = get_kernel_id(buffer);
++
++	vc_sm_add_resource(sm_state->vpu_allocs, buffer);
++
++	mutex_unlock(&buffer->lock);
++
++	*ret_buffer = buffer;
++	return 0;
++error:
++	if (buffer)
++		vc_sm_release_resource(buffer);
++	return ret;
++}
++
++static void
++vc_sm_vpu_event(struct sm_instance *instance, struct vc_sm_result_t *reply,
++		int reply_len)
++{
++	switch (reply->trans_id & ~0x80000000) {
++	case VC_SM_MSG_TYPE_CLIENT_VERSION:
++	{
++		/* Acknowledge that the firmware supports the version command */
++		pr_debug("%s: firmware acked version msg. Require release cb\n",
++			 __func__);
++		sm_state->require_released_callback = true;
++	}
++	break;
++	case VC_SM_MSG_TYPE_RELEASED:
++	{
++		struct vc_sm_released *release = (struct vc_sm_released *)reply;
++		struct vc_sm_buffer *buffer =
++					lookup_kernel_id(release->kernel_id);
++		if (!buffer) {
++			pr_err("%s: VC released a buffer that is already released, kernel_id %d\n",
++			       __func__, release->kernel_id);
++			break;
++		}
++		mutex_lock(&buffer->lock);
++
++		pr_debug("%s: Released addr %08x, size %u, id %08x, mem_handle %08x\n",
++			 __func__, release->addr, release->size,
++			 release->kernel_id, release->vc_handle);
++
++		buffer->vc_handle = 0;
++		buffer->vpu_state = VPU_NOT_MAPPED;
++		free_kernel_id(release->kernel_id);
++
++		if (buffer->vpu_allocated) {
++			/* VPU allocation, so release the dmabuf which will
++			 * trigger the clean up.
++			 */
++			mutex_unlock(&buffer->lock);
++			dma_buf_put(buffer->dma_buf);
++		} else {
++			vc_sm_release_resource(buffer);
++		}
++	}
++	break;
++	case VC_SM_MSG_TYPE_VC_MEM_REQUEST:
++	{
++		struct vc_sm_buffer *buffer = NULL;
++		struct vc_sm_vc_mem_request *req =
++					(struct vc_sm_vc_mem_request *)reply;
++		struct vc_sm_vc_mem_request_result reply;
++		int ret;
++
++		pr_debug("%s: Request %u bytes of memory, align %d name %s, trans_id %08x\n",
++			 __func__, req->size, req->align, req->name,
++			 req->trans_id);
++		ret = vc_sm_cma_vpu_alloc(req->size, req->align, req->name,
++					  req->vc_handle, &buffer);
++
++		reply.trans_id = req->trans_id;
++		if (!ret) {
++			reply.addr = buffer->dma_addr;
++			reply.kernel_id = buffer->kernel_id;
++			pr_debug("%s: Allocated resource buffer %p, addr %pad\n",
++				 __func__, buffer, &buffer->dma_addr);
++		} else {
++			pr_err("%s: Allocation failed size %u, name %s, vc_handle %u\n",
++			       __func__, req->size, req->name, req->vc_handle);
++			reply.addr = 0;
++			reply.kernel_id = 0;
++		}
++		vc_sm_vchi_client_vc_mem_req_reply(sm_state->sm_handle, &reply,
++						   &sm_state->int_trans_id);
++		break;
++	}
++	break;
++	default:
++		pr_err("%s: Unknown vpu cmd %x\n", __func__, reply->trans_id);
++		break;
++	}
++}
++
++/* Userspace handling */
++/*
++ * Open the device.  Creates a private state to help track all allocation
++ * associated with this device.
++ */
++static int vc_sm_cma_open(struct inode *inode, struct file *file)
++{
++	/* Make sure the device was started properly. */
++	if (!sm_state) {
++		pr_err("[%s]: invalid device\n", __func__);
++		return -EPERM;
++	}
++
++	file->private_data = vc_sm_cma_create_priv_data(current->tgid);
++	if (!file->private_data) {
++		pr_err("[%s]: failed to create data tracker\n", __func__);
++
++		return -ENOMEM;
++	}
++
++	return 0;
++}
++
++/*
++ * Close the vcsm-cma device.
++ * All allocations are file descriptors to the dmabuf objects, so we will get
++ * the clean up request on those as those are cleaned up.
++ */
++static int vc_sm_cma_release(struct inode *inode, struct file *file)
++{
++	struct vc_sm_privdata_t *file_data =
++	    (struct vc_sm_privdata_t *)file->private_data;
++	int ret = 0;
++
++	/* Make sure the device was started properly. */
++	if (!sm_state || !file_data) {
++		pr_err("[%s]: invalid device\n", __func__);
++		ret = -EPERM;
++		goto out;
++	}
++
++	pr_debug("[%s]: using private data %p\n", __func__, file_data);
++
++	/* Terminate the private data. */
++	kfree(file_data);
++
++out:
++	return ret;
++}
++
++/*
++ * Allocate a shared memory handle and block.
++ * Allocation is from CMA, and then imported into the VPU mappings.
++ */
++int vc_sm_cma_ioctl_alloc(struct vc_sm_privdata_t *private,
++			  struct vc_sm_cma_ioctl_alloc *ioparam)
++{
++	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
++	struct vc_sm_buffer *buffer = NULL;
++	struct vc_sm_import import = { 0 };
++	struct vc_sm_import_result result = { 0 };
++	struct dma_buf *dmabuf = NULL;
++	struct sg_table *sgt;
++	int aligned_size;
++	int ret = 0;
++	int status;
++	int fd = -1;
++
++	aligned_size = PAGE_ALIGN(ioparam->size);
++
++	if (!aligned_size)
++		return -EINVAL;
++
++	/* Allocate local buffer to track this allocation. */
++	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
++	if (!buffer) {
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	buffer->cookie = dma_alloc_coherent(&sm_state->pdev->dev,
++					    aligned_size,
++					    &buffer->dma_addr,
++					    GFP_KERNEL);
++	if (!buffer->cookie) {
++		pr_err("[%s]: dma_alloc_coherent alloc of %d bytes failed\n",
++		       __func__, aligned_size);
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	import.type = VC_SM_ALLOC_NON_CACHED;
++	import.allocator = current->tgid;
++
++	if (*ioparam->name)
++		memcpy(import.name, ioparam->name, sizeof(import.name) - 1);
++	else
++		memcpy(import.name, VC_SM_RESOURCE_NAME_DEFAULT,
++		       sizeof(VC_SM_RESOURCE_NAME_DEFAULT));
++
++	mutex_init(&buffer->lock);
++	INIT_LIST_HEAD(&buffer->attachments);
++	memcpy(buffer->name, import.name,
++	       min(sizeof(buffer->name), sizeof(import.name) - 1));
++
++	exp_info.ops = &dma_buf_ops;
++	exp_info.size = aligned_size;
++	exp_info.flags = O_RDWR;
++	exp_info.priv = buffer;
++
++	dmabuf = dma_buf_export(&exp_info);
++	if (IS_ERR(dmabuf)) {
++		ret = PTR_ERR(dmabuf);
++		goto error;
++	}
++	buffer->dma_buf = dmabuf;
++
++	import.addr = buffer->dma_addr;
++	import.size = aligned_size;
++	import.kernel_id = get_kernel_id(buffer);
++
++	/* Wrap it into a videocore buffer. */
++	status = vc_sm_cma_vchi_import(sm_state->sm_handle, &import, &result,
++				       &sm_state->int_trans_id);
++	if (status == -EINTR) {
++		pr_debug("[%s]: requesting import memory action restart (trans_id: %u)\n",
++			 __func__, sm_state->int_trans_id);
++		ret = -ERESTARTSYS;
++		private->restart_sys = -EINTR;
++		private->int_action = VC_SM_MSG_TYPE_IMPORT;
++		goto error;
++	} else if (status || !result.res_handle) {
++		pr_err("[%s]: failed to import memory on videocore (status: %u, trans_id: %u)\n",
++		       __func__, status, sm_state->int_trans_id);
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	/* Keep track of the buffer we created. */
++	buffer->private = private;
++	buffer->vc_handle = result.res_handle;
++	buffer->size = import.size;
++	buffer->vpu_state = VPU_MAPPED;
++	buffer->kernel_id = import.kernel_id;
++
++	sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
++	if (!sgt) {
++		ret = -ENOMEM;
++		goto error;
++	}
++
++	ret = dma_get_sgtable(&sm_state->pdev->dev, sgt, buffer->cookie,
++			      buffer->dma_addr, buffer->size);
++	if (ret < 0) {
++		/* FIXME: error handling */
++		pr_err("failed to get scatterlist from DMA API\n");
++		kfree(sgt);
++		ret = -ENOMEM;
++		goto error;
++	}
++	buffer->alloc.sg_table = sgt;
++
++	fd = dma_buf_fd(dmabuf, O_CLOEXEC);
++	if (fd < 0)
++		goto error;
++
++	vc_sm_add_resource(private, buffer);
++
++	pr_debug("[%s]: Added resource as fd %d, buffer %p, private %p, dma_addr %pad\n",
++		 __func__, fd, buffer, private, &buffer->dma_addr);
++
++	/* We're done */
++	ioparam->handle = fd;
++	ioparam->vc_handle = buffer->vc_handle;
++	ioparam->dma_addr = buffer->dma_addr;
++	return 0;
++
++error:
++	pr_err("[%s]: something failed - cleanup. ret %d\n", __func__, ret);
++
++	if (dmabuf) {
++		/* dmabuf has been exported, therefore allow dmabuf cleanup to
++		 * deal with this
++		 */
++		dma_buf_put(dmabuf);
++	} else {
++		/* No dmabuf, therefore just free the buffer here */
++		if (buffer->cookie)
++			dma_free_coherent(&sm_state->pdev->dev, buffer->size,
++					  buffer->cookie, buffer->dma_addr);
++		kfree(buffer);
++	}
++	return ret;
++}
++
++#ifndef CONFIG_ARM64
++/* Converts VCSM_CACHE_OP_* to an operating function. */
++static void (*cache_op_to_func(const unsigned int cache_op))
++						(const void*, const void*)
++{
++	switch (cache_op) {
++	case VC_SM_CACHE_OP_NOP:
++		return NULL;
++
++	case VC_SM_CACHE_OP_INV:
++	case VC_SM_CACHE_OP_CLEAN:
++	case VC_SM_CACHE_OP_FLUSH:
++		return dmac_flush_range;
++
++	default:
++		pr_err("[%s]: Invalid cache_op: 0x%08x\n", __func__, cache_op);
++		return NULL;
++	}
++}
++
++/*
++ * Clean/invalid/flush cache of which buffer is already pinned (i.e. accessed).
++ */
++static int clean_invalid_contig_2d(const void __user *addr,
++				   const size_t block_count,
++				   const size_t block_size,
++				   const size_t stride,
++				   const unsigned int cache_op)
++{
++	size_t i;
++	void (*op_fn)(const void *start, const void *end);
++
++	if (!block_size) {
++		pr_err("[%s]: size cannot be 0\n", __func__);
++		return -EINVAL;
++	}
++
++	op_fn = cache_op_to_func(cache_op);
++	if (!op_fn)
++		return -EINVAL;
++
++	for (i = 0; i < block_count; i ++, addr += stride)
++		op_fn(addr, addr + block_size);
++
++	return 0;
++}
++
++static int vc_sm_cma_clean_invalid2(unsigned int cmdnr, unsigned long arg)
++{
++	struct vc_sm_cma_ioctl_clean_invalid2 ioparam;
++	struct vc_sm_cma_ioctl_clean_invalid_block *block = NULL;
++	int i, ret = 0;
++
++	/* Get parameter data. */
++	if (copy_from_user(&ioparam, (void *)arg, sizeof(ioparam))) {
++		pr_err("[%s]: failed to copy-from-user header for cmd %x\n",
++		       __func__, cmdnr);
++		return -EFAULT;
++	}
++	block = kmalloc(ioparam.op_count * sizeof(*block), GFP_KERNEL);
++	if (!block)
++		return -EFAULT;
++
++	if (copy_from_user(block, (void *)(arg + sizeof(ioparam)),
++			   ioparam.op_count * sizeof(*block)) != 0) {
++		pr_err("[%s]: failed to copy-from-user payload for cmd %x\n",
++		       __func__, cmdnr);
++		ret = -EFAULT;
++		goto out;
++	}
++
++	for (i = 0; i < ioparam.op_count; i++) {
++		const struct vc_sm_cma_ioctl_clean_invalid_block * const op =
++								block + i;
++
++		if (op->invalidate_mode == VC_SM_CACHE_OP_NOP)
++			continue;
++
++		ret = clean_invalid_contig_2d((void __user *)op->start_address,
++					      op->block_count, op->block_size,
++					      op->inter_block_stride,
++					      op->invalidate_mode);
++		if (ret)
++			break;
++	}
++out:
++	kfree(block);
++
++	return ret;
++}
++#endif
++
++static long vc_sm_cma_ioctl(struct file *file, unsigned int cmd,
++			    unsigned long arg)
++{
++	int ret = 0;
++	unsigned int cmdnr = _IOC_NR(cmd);
++	struct vc_sm_privdata_t *file_data =
++	    (struct vc_sm_privdata_t *)file->private_data;
++
++	/* Validate we can work with this device. */
++	if (!sm_state || !file_data) {
++		pr_err("[%s]: invalid device\n", __func__);
++		return -EPERM;
++	}
++
++	/* Action is a re-post of a previously interrupted action? */
++	if (file_data->restart_sys == -EINTR) {
++		pr_debug("[%s]: clean up of action %u (trans_id: %u) following EINTR\n",
++			 __func__, file_data->int_action,
++			 file_data->int_trans_id);
++
++		file_data->restart_sys = 0;
++	}
++
++	/* Now process the command. */
++	switch (cmdnr) {
++		/* New memory allocation.
++		 */
++	case VC_SM_CMA_CMD_ALLOC:
++	{
++		struct vc_sm_cma_ioctl_alloc ioparam;
++
++		/* Get the parameter data. */
++		if (copy_from_user
++		    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
++			pr_err("[%s]: failed to copy-from-user for cmd %x\n",
++			       __func__, cmdnr);
++			ret = -EFAULT;
++			break;
++		}
++
++		ret = vc_sm_cma_ioctl_alloc(file_data, &ioparam);
++		if (!ret &&
++		    (copy_to_user((void *)arg, &ioparam,
++				  sizeof(ioparam)) != 0)) {
++			/* FIXME: Release allocation */
++			pr_err("[%s]: failed to copy-to-user for cmd %x\n",
++			       __func__, cmdnr);
++			ret = -EFAULT;
++		}
++		break;
++	}
++
++	case VC_SM_CMA_CMD_IMPORT_DMABUF:
++	{
++		struct vc_sm_cma_ioctl_import_dmabuf ioparam;
++		struct dma_buf *new_dmabuf;
++
++		/* Get the parameter data. */
++		if (copy_from_user
++		    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
++			pr_err("[%s]: failed to copy-from-user for cmd %x\n",
++			       __func__, cmdnr);
++			ret = -EFAULT;
++			break;
++		}
++
++		ret = vc_sm_cma_import_dmabuf_internal(file_data,
++						       NULL,
++						       ioparam.dmabuf_fd,
++						       &new_dmabuf);
++
++		if (!ret) {
++			struct vc_sm_buffer *buf = new_dmabuf->priv;
++
++			ioparam.size = buf->size;
++			ioparam.handle = dma_buf_fd(new_dmabuf,
++						    O_CLOEXEC);
++			ioparam.vc_handle = buf->vc_handle;
++			ioparam.dma_addr = buf->dma_addr;
++
++			if (ioparam.handle < 0 ||
++			    (copy_to_user((void *)arg, &ioparam,
++					  sizeof(ioparam)) != 0)) {
++				dma_buf_put(new_dmabuf);
++				/* FIXME: Release allocation */
++				ret = -EFAULT;
++			}
++		}
++		break;
++	}
++
++#ifndef CONFIG_ARM64
++	/*
++	 * Flush/Invalidate the cache for a given mapping.
++	 * Blocks must be pinned (i.e. accessed) before this call.
++	 */
++	case VC_SM_CMA_CMD_CLEAN_INVALID2:
++		ret = vc_sm_cma_clean_invalid2(cmdnr, arg);
++		break;
++#endif
++
++	default:
++		pr_debug("[%s]: cmd %x tgid %u, owner %u\n", __func__, cmdnr,
++			 current->tgid, file_data->pid);
++
++		ret = -EINVAL;
++		break;
++	}
++
++	return ret;
++}
++
++#ifdef CONFIG_COMPAT
++struct vc_sm_cma_ioctl_clean_invalid2_32 {
++	u32 op_count;
++	struct vc_sm_cma_ioctl_clean_invalid_block_32 {
++		u16 invalidate_mode;
++		u16 block_count;
++		compat_uptr_t start_address;
++		u32 block_size;
++		u32 inter_block_stride;
++	} s[0];
++};
++
++#define VC_SM_CMA_CMD_CLEAN_INVALID2_32\
++	_IOR(VC_SM_CMA_MAGIC_TYPE, VC_SM_CMA_CMD_CLEAN_INVALID2,\
++	 struct vc_sm_cma_ioctl_clean_invalid2_32)
++
++static long vc_sm_cma_compat_ioctl(struct file *file, unsigned int cmd,
++				   unsigned long arg)
++{
++	switch (cmd) {
++	case VC_SM_CMA_CMD_CLEAN_INVALID2_32:
++		/* FIXME */
++		return -EINVAL;
++
++	default:
++		return vc_sm_cma_ioctl(file, cmd, arg);
++	}
++}
++#endif
++
++/* Device operations that we managed in this driver. */
++static const struct file_operations vc_sm_ops = {
++	.owner = THIS_MODULE,
++	.unlocked_ioctl = vc_sm_cma_ioctl,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl = vc_sm_cma_compat_ioctl,
++#endif
++	.open = vc_sm_cma_open,
++	.release = vc_sm_cma_release,
++};
++
++/* Driver load/unload functions */
++/* Videocore connected.  */
++static void vc_sm_connected_init(void)
++{
++	int ret;
++	struct vchiq_instance *vchiq_instance;
++	struct vc_sm_version version;
++	struct vc_sm_result_t version_result;
++
++	pr_info("[%s]: start\n", __func__);
++
++	/*
++	 * Initialize and create a VCHI connection for the shared memory service
++	 * running on videocore.
++	 */
++	ret = vchiq_initialise(&vchiq_instance);
++	if (ret) {
++		pr_err("[%s]: failed to initialise VCHI instance (ret=%d)\n",
++		       __func__, ret);
++
++		return;
++	}
++
++	ret = vchiq_connect(vchiq_instance);
++	if (ret) {
++		pr_err("[%s]: failed to connect VCHI instance (ret=%d)\n",
++		       __func__, ret);
++
++		return;
++	}
++
++	/* Initialize an instance of the shared memory service. */
++	sm_state->sm_handle = vc_sm_cma_vchi_init(vchiq_instance, 1,
++						  vc_sm_vpu_event);
++	if (!sm_state->sm_handle) {
++		pr_err("[%s]: failed to initialize shared memory service\n",
++		       __func__);
++
++		return;
++	}
++
++	/* Create a debug fs directory entry (root). */
++	sm_state->dir_root = debugfs_create_dir(VC_SM_DIR_ROOT_NAME, NULL);
++
++	sm_state->dir_state.show = &vc_sm_cma_global_state_show;
++	sm_state->dir_state.dir_entry =
++		debugfs_create_file(VC_SM_STATE, 0444, sm_state->dir_root,
++				    &sm_state->dir_state,
++				    &vc_sm_cma_debug_fs_fops);
++
++	INIT_LIST_HEAD(&sm_state->buffer_list);
++
++	/* Create a shared memory device. */
++	sm_state->misc_dev.minor = MISC_DYNAMIC_MINOR;
++	sm_state->misc_dev.name = DEVICE_NAME;
++	sm_state->misc_dev.fops = &vc_sm_ops;
++	sm_state->misc_dev.parent = NULL;
++	/* Temporarily set as 666 until udev rules have been sorted */
++	sm_state->misc_dev.mode = 0666;
++	ret = misc_register(&sm_state->misc_dev);
++	if (ret) {
++		pr_err("vcsm-cma: failed to register misc device.\n");
++		goto err_remove_debugfs;
++	}
++
++	sm_state->data_knl = vc_sm_cma_create_priv_data(0);
++	if (!sm_state->data_knl) {
++		pr_err("[%s]: failed to create kernel private data tracker\n",
++		       __func__);
++		goto err_remove_misc_dev;
++	}
++
++	version.version = 2;
++	ret = vc_sm_cma_vchi_client_version(sm_state->sm_handle, &version,
++					    &version_result,
++					    &sm_state->int_trans_id);
++	if (ret) {
++		pr_err("[%s]: Failed to send version request %d\n", __func__,
++		       ret);
++	}
++
++	/* Done! */
++	sm_inited = 1;
++	pr_info("[%s]: installed successfully\n", __func__);
++	return;
++
++err_remove_misc_dev:
++	misc_deregister(&sm_state->misc_dev);
++err_remove_debugfs:
++	debugfs_remove_recursive(sm_state->dir_root);
++	vc_sm_cma_vchi_stop(&sm_state->sm_handle);
++}
++
++/* Driver loading. */
++static int bcm2835_vc_sm_cma_probe(struct platform_device *pdev)
++{
++	pr_info("%s: Videocore shared memory driver\n", __func__);
++
++	sm_state = devm_kzalloc(&pdev->dev, sizeof(*sm_state), GFP_KERNEL);
++	if (!sm_state)
++		return -ENOMEM;
++	sm_state->pdev = pdev;
++	mutex_init(&sm_state->map_lock);
++
++	spin_lock_init(&sm_state->kernelid_map_lock);
++	idr_init_base(&sm_state->kernelid_map, 1);
++
++	pdev->dev.dma_parms = devm_kzalloc(&pdev->dev,
++					   sizeof(*pdev->dev.dma_parms),
++					   GFP_KERNEL);
++	/* dma_set_max_seg_size checks if dma_parms is NULL. */
++	dma_set_max_seg_size(&pdev->dev, 0x3FFFFFFF);
++
++	vchiq_add_connected_callback(vc_sm_connected_init);
++	return 0;
++}
++
++/* Driver unloading. */
++static int bcm2835_vc_sm_cma_remove(struct platform_device *pdev)
++{
++	pr_debug("[%s]: start\n", __func__);
++	if (sm_inited) {
++		misc_deregister(&sm_state->misc_dev);
++
++		/* Remove all proc entries. */
++		debugfs_remove_recursive(sm_state->dir_root);
++
++		/* Stop the videocore shared memory service. */
++		vc_sm_cma_vchi_stop(&sm_state->sm_handle);
++	}
++
++	if (sm_state) {
++		idr_destroy(&sm_state->kernelid_map);
++
++		/* Free the memory for the state structure. */
++		mutex_destroy(&sm_state->map_lock);
++	}
++
++	pr_debug("[%s]: end\n", __func__);
++	return 0;
++}
++
++/* Kernel API calls */
++/* Get an internal resource handle mapped from the external one. */
++int vc_sm_cma_int_handle(void *handle)
++{
++	struct dma_buf *dma_buf = (struct dma_buf *)handle;
++	struct vc_sm_buffer *buf;
++
++	/* Validate we can work with this device. */
++	if (!sm_state || !handle) {
++		pr_err("[%s]: invalid input\n", __func__);
++		return 0;
++	}
++
++	buf = (struct vc_sm_buffer *)dma_buf->priv;
++	return buf->vc_handle;
++}
++EXPORT_SYMBOL_GPL(vc_sm_cma_int_handle);
++
++/* Free a previously allocated shared memory handle and block. */
++int vc_sm_cma_free(void *handle)
++{
++	struct dma_buf *dma_buf = (struct dma_buf *)handle;
++
++	/* Validate we can work with this device. */
++	if (!sm_state || !handle) {
++		pr_err("[%s]: invalid input\n", __func__);
++		return -EPERM;
++	}
++
++	pr_debug("%s: handle %p/dmabuf %p\n", __func__, handle, dma_buf);
++
++	dma_buf_put(dma_buf);
++
++	return 0;
++}
++EXPORT_SYMBOL_GPL(vc_sm_cma_free);
++
++/* Import a dmabuf to be shared with VC. */
++int vc_sm_cma_import_dmabuf(struct dma_buf *src_dmabuf, void **handle)
++{
++	struct dma_buf *new_dma_buf;
++	int ret;
++
++	/* Validate we can work with this device. */
++	if (!sm_state || !src_dmabuf || !handle) {
++		pr_err("[%s]: invalid input\n", __func__);
++		return -EPERM;
++	}
++
++	ret = vc_sm_cma_import_dmabuf_internal(sm_state->data_knl, src_dmabuf,
++					       -1, &new_dma_buf);
++
++	if (!ret) {
++		pr_debug("%s: imported to ptr %p\n", __func__, new_dma_buf);
++
++		/* Assign valid handle at this time.*/
++		*handle = new_dma_buf;
++	} else {
++		/*
++		 * succeeded in importing the dma_buf, but then
++		 * failed to look it up again. How?
++		 * Release the fd again.
++		 */
++		pr_err("%s: imported vc_sm_cma_get_buffer failed %d\n",
++		       __func__, ret);
++	}
++
++	return ret;
++}
++EXPORT_SYMBOL_GPL(vc_sm_cma_import_dmabuf);
++
++static struct platform_driver bcm2835_vcsm_cma_driver = {
++	.probe = bcm2835_vc_sm_cma_probe,
++	.remove = bcm2835_vc_sm_cma_remove,
++	.driver = {
++		   .name = DEVICE_NAME,
++		   .owner = THIS_MODULE,
++		   },
++};
++
++module_platform_driver(bcm2835_vcsm_cma_driver);
++
++MODULE_AUTHOR("Dave Stevenson");
++MODULE_DESCRIPTION("VideoCore CMA Shared Memory Driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:vcsm-cma");
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.h
+@@ -0,0 +1,84 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++
++/*
++ * VideoCore Shared Memory driver using CMA.
++ *
++ * Copyright: 2018, Raspberry Pi (Trading) Ltd
++ *
++ */
++
++#ifndef VC_SM_H
++#define VC_SM_H
++
++#include <linux/device.h>
++#include <linux/dma-direction.h>
++#include <linux/kref.h>
++#include <linux/mm_types.h>
++#include <linux/mutex.h>
++#include <linux/rbtree.h>
++#include <linux/sched.h>
++#include <linux/shrinker.h>
++#include <linux/types.h>
++#include <linux/miscdevice.h>
++
++#define VC_SM_MAX_NAME_LEN 32
++
++enum vc_sm_vpu_mapping_state {
++	VPU_NOT_MAPPED,
++	VPU_MAPPED,
++	VPU_UNMAPPING
++};
++
++struct vc_sm_alloc_data {
++	unsigned long num_pages;
++	void *priv_virt;
++	struct sg_table *sg_table;
++};
++
++struct vc_sm_imported {
++	struct dma_buf *dma_buf;
++	struct dma_buf_attachment *attach;
++	struct sg_table *sgt;
++};
++
++struct vc_sm_buffer {
++	struct list_head global_buffer_list;	/* Global list of buffers. */
++
++	/* Index in the kernel_id idr so that we can find the
++	 * mmal_msg_context again when servicing the VCHI reply.
++	 */
++	int kernel_id;
++
++	size_t size;
++
++	/* Lock over all the following state for this buffer */
++	struct mutex lock;
++	struct list_head attachments;
++
++	char name[VC_SM_MAX_NAME_LEN];
++
++	int in_use:1;	/* Kernel is still using this resource */
++	int imported:1;	/* Imported dmabuf */
++
++	enum vc_sm_vpu_mapping_state vpu_state;
++	u32 vc_handle;	/* VideoCore handle for this buffer */
++	int vpu_allocated;	/*
++				 * The VPU made this allocation. Release the
++				 * local dma_buf when the VPU releases the
++				 * resource.
++				 */
++
++	/* DMABUF related fields */
++	struct dma_buf *dma_buf;
++	dma_addr_t dma_addr;
++	void *cookie;
++
++	struct vc_sm_privdata_t *private;
++
++	union {
++		struct vc_sm_alloc_data alloc;
++		struct vc_sm_imported import;
++	};
++};
++
++#endif
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
+@@ -0,0 +1,503 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * VideoCore Shared Memory CMA allocator
++ *
++ * Copyright: 2018, Raspberry Pi (Trading) Ltd
++ * Copyright 2011-2012 Broadcom Corporation.  All rights reserved.
++ *
++ * Based on vmcs_sm driver from Broadcom Corporation.
++ *
++ */
++
++/* ---- Include Files ----------------------------------------------------- */
++#include <linux/completion.h>
++#include <linux/kernel.h>
++#include <linux/kthread.h>
++#include <linux/list.h>
++#include <linux/mutex.h>
++#include <linux/semaphore.h>
++#include <linux/slab.h>
++#include <linux/types.h>
++
++#include "vc_sm_cma_vchi.h"
++
++#define VC_SM_VER  1
++#define VC_SM_MIN_VER 0
++
++/* ---- Private Constants and Types -------------------------------------- */
++
++/* Command blocks come from a pool */
++#define SM_MAX_NUM_CMD_RSP_BLKS 32
++
++/* The number of supported connections */
++#define SM_MAX_NUM_CONNECTIONS 3
++
++struct sm_cmd_rsp_blk {
++	struct list_head head;	/* To create lists */
++	/* To be signaled when the response is there */
++	struct completion cmplt;
++
++	u32 id;
++	u16 length;
++
++	u8 msg[VC_SM_MAX_MSG_LEN];
++
++	uint32_t wait:1;
++	uint32_t sent:1;
++	uint32_t alloc:1;
++
++};
++
++struct sm_instance {
++	u32 num_connections;
++	unsigned int service_handle[SM_MAX_NUM_CONNECTIONS];
++	struct task_struct *io_thread;
++	struct completion io_cmplt;
++
++	vpu_event_cb vpu_event;
++
++	/* Mutex over the following lists */
++	struct mutex lock;
++	u32 trans_id;
++	struct list_head cmd_list;
++	struct list_head rsp_list;
++	struct list_head dead_list;
++
++	struct sm_cmd_rsp_blk free_blk[SM_MAX_NUM_CMD_RSP_BLKS];
++
++	/* Mutex over the free_list */
++	struct mutex free_lock;
++	struct list_head free_list;
++
++	struct semaphore free_sema;
++
++};
++
++/* ---- Private Variables ------------------------------------------------ */
++
++/* ---- Private Function Prototypes -------------------------------------- */
++
++/* ---- Private Functions ------------------------------------------------ */
++static int
++bcm2835_vchi_msg_queue(unsigned int handle,
++		       void *data,
++		       unsigned int size)
++{
++	return vchiq_queue_kernel_message(handle, data, size);
++}
++
++static struct
++sm_cmd_rsp_blk *vc_vchi_cmd_create(struct sm_instance *instance,
++				   enum vc_sm_msg_type id, void *msg,
++				   u32 size, int wait)
++{
++	struct sm_cmd_rsp_blk *blk;
++	struct vc_sm_msg_hdr_t *hdr;
++
++	if (down_interruptible(&instance->free_sema)) {
++		blk = kmalloc(sizeof(*blk), GFP_KERNEL);
++		if (!blk)
++			return NULL;
++
++		blk->alloc = 1;
++		init_completion(&blk->cmplt);
++	} else {
++		mutex_lock(&instance->free_lock);
++		blk =
++		    list_first_entry(&instance->free_list,
++				     struct sm_cmd_rsp_blk, head);
++		list_del(&blk->head);
++		mutex_unlock(&instance->free_lock);
++	}
++
++	blk->sent = 0;
++	blk->wait = wait;
++	blk->length = sizeof(*hdr) + size;
++
++	hdr = (struct vc_sm_msg_hdr_t *)blk->msg;
++	hdr->type = id;
++	mutex_lock(&instance->lock);
++	instance->trans_id++;
++	/*
++	 * Retain the top bit for identifying asynchronous events, or VPU cmds.
++	 */
++	instance->trans_id &= ~0x80000000;
++	hdr->trans_id = instance->trans_id;
++	blk->id = instance->trans_id;
++	mutex_unlock(&instance->lock);
++
++	if (size)
++		memcpy(hdr->body, msg, size);
++
++	return blk;
++}
++
++static void
++vc_vchi_cmd_delete(struct sm_instance *instance, struct sm_cmd_rsp_blk *blk)
++{
++	if (blk->alloc) {
++		kfree(blk);
++		return;
++	}
++
++	mutex_lock(&instance->free_lock);
++	list_add(&blk->head, &instance->free_list);
++	mutex_unlock(&instance->free_lock);
++	up(&instance->free_sema);
++}
++
++static void vc_sm_cma_vchi_rx_ack(struct sm_instance *instance,
++				  struct sm_cmd_rsp_blk *cmd,
++				  struct vc_sm_result_t *reply,
++				  u32 reply_len)
++{
++	mutex_lock(&instance->lock);
++	list_for_each_entry(cmd,
++			    &instance->rsp_list,
++			    head) {
++		if (cmd->id == reply->trans_id)
++			break;
++	}
++	mutex_unlock(&instance->lock);
++
++	if (&cmd->head == &instance->rsp_list) {
++		//pr_debug("%s: received response %u, throw away...",
++		pr_err("%s: received response %u, throw away...",
++		       __func__,
++		       reply->trans_id);
++	} else if (reply_len > sizeof(cmd->msg)) {
++		pr_err("%s: reply too big (%u) %u, throw away...",
++		       __func__, reply_len,
++		     reply->trans_id);
++	} else {
++		memcpy(cmd->msg, reply,
++		       reply_len);
++		complete(&cmd->cmplt);
++	}
++}
++
++static int vc_sm_cma_vchi_videocore_io(void *arg)
++{
++	struct sm_instance *instance = arg;
++	struct sm_cmd_rsp_blk *cmd = NULL, *cmd_tmp;
++	struct vc_sm_result_t *reply;
++	struct vchiq_header *header;
++	s32 status;
++	int svc_use = 1;
++
++	while (1) {
++		if (svc_use)
++			vchiq_release_service(instance->service_handle[0]);
++		svc_use = 0;
++
++		if (wait_for_completion_interruptible(&instance->io_cmplt))
++			continue;
++		vchiq_use_service(instance->service_handle[0]);
++		svc_use = 1;
++
++		do {
++			/*
++			 * Get new command and move it to response list
++			 */
++			mutex_lock(&instance->lock);
++			if (list_empty(&instance->cmd_list)) {
++				/* no more commands to process */
++				mutex_unlock(&instance->lock);
++				break;
++			}
++			cmd = list_first_entry(&instance->cmd_list,
++					       struct sm_cmd_rsp_blk, head);
++			list_move(&cmd->head, &instance->rsp_list);
++			cmd->sent = 1;
++			mutex_unlock(&instance->lock);
++			/* Send the command */
++			status =
++				bcm2835_vchi_msg_queue(instance->service_handle[0],
++						       cmd->msg, cmd->length);
++			if (status) {
++				pr_err("%s: failed to queue message (%d)",
++				       __func__, status);
++			}
++
++			/* If no reply is needed then we're done */
++			if (!cmd->wait) {
++				mutex_lock(&instance->lock);
++				list_del(&cmd->head);
++				mutex_unlock(&instance->lock);
++				vc_vchi_cmd_delete(instance, cmd);
++				continue;
++			}
++
++			if (status) {
++				complete(&cmd->cmplt);
++				continue;
++			}
++
++		} while (1);
++
++		while ((header = vchiq_msg_hold(instance->service_handle[0]))) {
++			reply = (struct vc_sm_result_t *)header->data;
++			if (reply->trans_id & 0x80000000) {
++				/* Async event or cmd from the VPU */
++				if (instance->vpu_event)
++					instance->vpu_event(instance, reply,
++							    header->size);
++			} else {
++				vc_sm_cma_vchi_rx_ack(instance, cmd, reply,
++						      header->size);
++			}
++
++			vchiq_release_message(instance->service_handle[0],
++					      header);
++		}
++
++		/* Go through the dead list and free them */
++		mutex_lock(&instance->lock);
++		list_for_each_entry_safe(cmd, cmd_tmp, &instance->dead_list,
++					 head) {
++			list_del(&cmd->head);
++			vc_vchi_cmd_delete(instance, cmd);
++		}
++		mutex_unlock(&instance->lock);
++	}
++
++	return 0;
++}
++
++static enum vchiq_status vc_sm_cma_vchi_callback(enum vchiq_reason reason,
++						 struct vchiq_header *header,
++						 unsigned int handle, void *userdata)
++{
++	struct sm_instance *instance = vchiq_get_service_userdata(handle);
++
++	switch (reason) {
++	case VCHIQ_MESSAGE_AVAILABLE:
++		vchiq_msg_queue_push(handle, header);
++		complete(&instance->io_cmplt);
++		break;
++
++	case VCHIQ_SERVICE_CLOSED:
++		pr_info("%s: service CLOSED!!", __func__);
++	default:
++		break;
++	}
++
++	return VCHIQ_SUCCESS;
++}
++
++struct sm_instance *vc_sm_cma_vchi_init(struct vchiq_instance *vchiq_instance,
++					unsigned int num_connections,
++					vpu_event_cb vpu_event)
++{
++	u32 i;
++	struct sm_instance *instance;
++	int status;
++
++	pr_debug("%s: start", __func__);
++
++	if (num_connections > SM_MAX_NUM_CONNECTIONS) {
++		pr_err("%s: unsupported number of connections %u (max=%u)",
++		       __func__, num_connections, SM_MAX_NUM_CONNECTIONS);
++
++		goto err_null;
++	}
++	/* Allocate memory for this instance */
++	instance = kzalloc(sizeof(*instance), GFP_KERNEL);
++
++	/* Misc initialisations */
++	mutex_init(&instance->lock);
++	init_completion(&instance->io_cmplt);
++	INIT_LIST_HEAD(&instance->cmd_list);
++	INIT_LIST_HEAD(&instance->rsp_list);
++	INIT_LIST_HEAD(&instance->dead_list);
++	INIT_LIST_HEAD(&instance->free_list);
++	sema_init(&instance->free_sema, SM_MAX_NUM_CMD_RSP_BLKS);
++	mutex_init(&instance->free_lock);
++	for (i = 0; i < SM_MAX_NUM_CMD_RSP_BLKS; i++) {
++		init_completion(&instance->free_blk[i].cmplt);
++		list_add(&instance->free_blk[i].head, &instance->free_list);
++	}
++
++	/* Open the VCHI service connections */
++	instance->num_connections = num_connections;
++	for (i = 0; i < num_connections; i++) {
++		struct vchiq_service_params_kernel params = {
++			.version = VC_SM_VER,
++			.version_min = VC_SM_MIN_VER,
++			.fourcc = VCHIQ_MAKE_FOURCC('S', 'M', 'E', 'M'),
++			.callback = vc_sm_cma_vchi_callback,
++			.userdata = instance,
++		};
++
++		status = vchiq_open_service(vchiq_instance, &params,
++					    &instance->service_handle[i]);
++		if (status) {
++			pr_err("%s: failed to open VCHI service (%d)",
++			       __func__, status);
++
++			goto err_close_services;
++		}
++	}
++	/* Create the thread which takes care of all io to/from videoocore. */
++	instance->io_thread = kthread_create(&vc_sm_cma_vchi_videocore_io,
++					     (void *)instance, "SMIO");
++	if (!instance->io_thread) {
++		pr_err("%s: failed to create SMIO thread", __func__);
++
++		goto err_close_services;
++	}
++	instance->vpu_event = vpu_event;
++	set_user_nice(instance->io_thread, -10);
++	wake_up_process(instance->io_thread);
++
++	pr_debug("%s: success - instance %p", __func__, instance);
++	return instance;
++
++err_close_services:
++	for (i = 0; i < instance->num_connections; i++) {
++		if (instance->service_handle[i])
++			vchiq_close_service(instance->service_handle[i]);
++	}
++	kfree(instance);
++err_null:
++	pr_debug("%s: FAILED", __func__);
++	return NULL;
++}
++
++int vc_sm_cma_vchi_stop(struct sm_instance **handle)
++{
++	struct sm_instance *instance;
++	u32 i;
++
++	if (!handle) {
++		pr_err("%s: invalid pointer to handle %p", __func__, handle);
++		goto lock;
++	}
++
++	if (!*handle) {
++		pr_err("%s: invalid handle %p", __func__, *handle);
++		goto lock;
++	}
++
++	instance = *handle;
++
++	/* Close all VCHI service connections */
++	for (i = 0; i < instance->num_connections; i++) {
++		vchiq_use_service(instance->service_handle[i]);
++		vchiq_close_service(instance->service_handle[i]);
++	}
++
++	kfree(instance);
++
++	*handle = NULL;
++	return 0;
++
++lock:
++	return -EINVAL;
++}
++
++static int vc_sm_cma_vchi_send_msg(struct sm_instance *handle,
++				   enum vc_sm_msg_type msg_id, void *msg,
++				   u32 msg_size, void *result, u32 result_size,
++				   u32 *cur_trans_id, u8 wait_reply)
++{
++	int status = 0;
++	struct sm_instance *instance = handle;
++	struct sm_cmd_rsp_blk *cmd_blk;
++
++	if (!handle) {
++		pr_err("%s: invalid handle", __func__);
++		return -EINVAL;
++	}
++	if (!msg) {
++		pr_err("%s: invalid msg pointer", __func__);
++		return -EINVAL;
++	}
++
++	cmd_blk =
++	    vc_vchi_cmd_create(instance, msg_id, msg, msg_size, wait_reply);
++	if (!cmd_blk) {
++		pr_err("[%s]: failed to allocate global tracking resource",
++		       __func__);
++		return -ENOMEM;
++	}
++
++	if (cur_trans_id)
++		*cur_trans_id = cmd_blk->id;
++
++	mutex_lock(&instance->lock);
++	list_add_tail(&cmd_blk->head, &instance->cmd_list);
++	mutex_unlock(&instance->lock);
++	complete(&instance->io_cmplt);
++
++	if (!wait_reply)
++		/* We're done */
++		return 0;
++
++	/* Wait for the response */
++	if (wait_for_completion_interruptible(&cmd_blk->cmplt)) {
++		mutex_lock(&instance->lock);
++		if (!cmd_blk->sent) {
++			list_del(&cmd_blk->head);
++			mutex_unlock(&instance->lock);
++			vc_vchi_cmd_delete(instance, cmd_blk);
++			return -ENXIO;
++		}
++
++		list_move(&cmd_blk->head, &instance->dead_list);
++		mutex_unlock(&instance->lock);
++		complete(&instance->io_cmplt);
++		return -EINTR;	/* We're done */
++	}
++
++	if (result && result_size) {
++		memcpy(result, cmd_blk->msg, result_size);
++	} else {
++		struct vc_sm_result_t *res =
++			(struct vc_sm_result_t *)cmd_blk->msg;
++		status = (res->success == 0) ? 0 : -ENXIO;
++	}
++
++	mutex_lock(&instance->lock);
++	list_del(&cmd_blk->head);
++	mutex_unlock(&instance->lock);
++	vc_vchi_cmd_delete(instance, cmd_blk);
++	return status;
++}
++
++int vc_sm_cma_vchi_free(struct sm_instance *handle, struct vc_sm_free_t *msg,
++			u32 *cur_trans_id)
++{
++	return vc_sm_cma_vchi_send_msg(handle, VC_SM_MSG_TYPE_FREE,
++				   msg, sizeof(*msg), 0, 0, cur_trans_id, 0);
++}
++
++int vc_sm_cma_vchi_import(struct sm_instance *handle, struct vc_sm_import *msg,
++			  struct vc_sm_import_result *result, u32 *cur_trans_id)
++{
++	return vc_sm_cma_vchi_send_msg(handle, VC_SM_MSG_TYPE_IMPORT,
++				   msg, sizeof(*msg), result, sizeof(*result),
++				   cur_trans_id, 1);
++}
++
++int vc_sm_cma_vchi_client_version(struct sm_instance *handle,
++				  struct vc_sm_version *msg,
++				  struct vc_sm_result_t *result,
++				  u32 *cur_trans_id)
++{
++	return vc_sm_cma_vchi_send_msg(handle, VC_SM_MSG_TYPE_CLIENT_VERSION,
++				   //msg, sizeof(*msg), result, sizeof(*result),
++				   //cur_trans_id, 1);
++				   msg, sizeof(*msg), NULL, 0,
++				   cur_trans_id, 0);
++}
++
++int vc_sm_vchi_client_vc_mem_req_reply(struct sm_instance *handle,
++				       struct vc_sm_vc_mem_request_result *msg,
++				       uint32_t *cur_trans_id)
++{
++	return vc_sm_cma_vchi_send_msg(handle,
++				       VC_SM_MSG_TYPE_VC_MEM_REQUEST_REPLY,
++				       msg, sizeof(*msg), 0, 0, cur_trans_id,
++				       0);
++}
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.h
+@@ -0,0 +1,63 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++
++/*
++ * VideoCore Shared Memory CMA allocator
++ *
++ * Copyright: 2018, Raspberry Pi (Trading) Ltd
++ * Copyright 2011-2012 Broadcom Corporation.  All rights reserved.
++ *
++ * Based on vmcs_sm driver from Broadcom Corporation.
++ *
++ */
++
++#ifndef __VC_SM_CMA_VCHI_H__INCLUDED__
++#define __VC_SM_CMA_VCHI_H__INCLUDED__
++
++#include <linux/raspberrypi/vchiq.h>
++
++#include "vc_sm_defs.h"
++
++/*
++ * Forward declare.
++ */
++struct sm_instance;
++
++typedef void (*vpu_event_cb)(struct sm_instance *instance,
++			     struct vc_sm_result_t *reply, int reply_len);
++
++/*
++ * Initialize the shared memory service, opens up vchi connection to talk to it.
++ */
++struct sm_instance *vc_sm_cma_vchi_init(struct vchiq_instance *vchi_instance,
++					unsigned int num_connections,
++					vpu_event_cb vpu_event);
++
++/*
++ * Terminates the shared memory service.
++ */
++int vc_sm_cma_vchi_stop(struct sm_instance **handle);
++
++/*
++ * Ask the shared memory service to free up some memory that was previously
++ * allocated by the vc_sm_cma_vchi_alloc function call.
++ */
++int vc_sm_cma_vchi_free(struct sm_instance *handle, struct vc_sm_free_t *msg,
++			u32 *cur_trans_id);
++
++/*
++ * Import a contiguous block of memory and wrap it in a GPU MEM_HANDLE_T.
++ */
++int vc_sm_cma_vchi_import(struct sm_instance *handle, struct vc_sm_import *msg,
++			  struct vc_sm_import_result *result,
++			  u32 *cur_trans_id);
++
++int vc_sm_cma_vchi_client_version(struct sm_instance *handle,
++				  struct vc_sm_version *msg,
++				  struct vc_sm_result_t *result,
++				  u32 *cur_trans_id);
++
++int vc_sm_vchi_client_vc_mem_req_reply(struct sm_instance *handle,
++				       struct vc_sm_vc_mem_request_result *msg,
++				       uint32_t *cur_trans_id);
++
++#endif /* __VC_SM_CMA_VCHI_H__INCLUDED__ */
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_defs.h
+@@ -0,0 +1,297 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++
++/*
++ * VideoCore Shared Memory CMA allocator
++ *
++ * Copyright: 2018, Raspberry Pi (Trading) Ltd
++ *
++ * Based on vc_sm_defs.h from the vmcs_sm driver Copyright Broadcom Corporation.
++ * All IPC messages are copied across to this file, even if the vc-sm-cma
++ * driver is not currently using them.
++ *
++ ****************************************************************************
++ */
++
++#ifndef __VC_SM_DEFS_H__INCLUDED__
++#define __VC_SM_DEFS_H__INCLUDED__
++
++/* Maximum message length */
++#define VC_SM_MAX_MSG_LEN (sizeof(union vc_sm_msg_union_t) + \
++	sizeof(struct vc_sm_msg_hdr_t))
++#define VC_SM_MAX_RSP_LEN (sizeof(union vc_sm_msg_union_t))
++
++/* Resource name maximum size */
++#define VC_SM_RESOURCE_NAME 32
++
++/*
++ * Version to be reported to the VPU
++ * VPU assumes 0 (aka 1) which does not require the released callback, nor
++ * expect the client to handle VC_MEM_REQUESTS.
++ * Version 2 requires the released callback, and must support VC_MEM_REQUESTS.
++ */
++#define VC_SM_PROTOCOL_VERSION	2
++
++enum vc_sm_msg_type {
++	/* Message types supported for HOST->VC direction */
++
++	/* Allocate shared memory block */
++	VC_SM_MSG_TYPE_ALLOC,
++	/* Lock allocated shared memory block */
++	VC_SM_MSG_TYPE_LOCK,
++	/* Unlock allocated shared memory block */
++	VC_SM_MSG_TYPE_UNLOCK,
++	/* Unlock allocated shared memory block, do not answer command */
++	VC_SM_MSG_TYPE_UNLOCK_NOANS,
++	/* Free shared memory block */
++	VC_SM_MSG_TYPE_FREE,
++	/* Resize a shared memory block */
++	VC_SM_MSG_TYPE_RESIZE,
++	/* Walk the allocated shared memory block(s) */
++	VC_SM_MSG_TYPE_WALK_ALLOC,
++
++	/* A previously applied action will need to be reverted */
++	VC_SM_MSG_TYPE_ACTION_CLEAN,
++
++	/*
++	 * Import a physical address and wrap into a MEM_HANDLE_T.
++	 * Release with VC_SM_MSG_TYPE_FREE.
++	 */
++	VC_SM_MSG_TYPE_IMPORT,
++	/*
++	 *Tells VC the protocol version supported by this client.
++	 * 2 supports the async/cmd messages from the VPU for final release
++	 * of memory, and for VC allocations.
++	 */
++	VC_SM_MSG_TYPE_CLIENT_VERSION,
++	/* Response to VC request for memory */
++	VC_SM_MSG_TYPE_VC_MEM_REQUEST_REPLY,
++
++	/*
++	 * Asynchronous/cmd messages supported for VC->HOST direction.
++	 * Signalled by setting the top bit in vc_sm_result_t trans_id.
++	 */
++
++	/*
++	 * VC has finished with an imported memory allocation.
++	 * Release any Linux reference counts on the underlying block.
++	 */
++	VC_SM_MSG_TYPE_RELEASED,
++	/* VC request for memory */
++	VC_SM_MSG_TYPE_VC_MEM_REQUEST,
++
++	VC_SM_MSG_TYPE_MAX
++};
++
++/* Type of memory to be allocated */
++enum vc_sm_alloc_type_t {
++	VC_SM_ALLOC_CACHED,
++	VC_SM_ALLOC_NON_CACHED,
++};
++
++/* Message header for all messages in HOST->VC direction */
++struct vc_sm_msg_hdr_t {
++	u32 type;
++	u32 trans_id;
++	u8 body[0];
++
++};
++
++/* Request to allocate memory (HOST->VC) */
++struct vc_sm_alloc_t {
++	/* type of memory to allocate */
++	enum vc_sm_alloc_type_t type;
++	/* byte amount of data to allocate per unit */
++	u32 base_unit;
++	/* number of unit to allocate */
++	u32 num_unit;
++	/* alignment to be applied on allocation */
++	u32 alignment;
++	/* identity of who allocated this block */
++	u32 allocator;
++	/* resource name (for easier tracking on vc side) */
++	char name[VC_SM_RESOURCE_NAME];
++
++};
++
++/* Result of a requested memory allocation (VC->HOST) */
++struct vc_sm_alloc_result_t {
++	/* Transaction identifier */
++	u32 trans_id;
++
++	/* Resource handle */
++	u32 res_handle;
++	/* Pointer to resource buffer */
++	u32 res_mem;
++	/* Resource base size (bytes) */
++	u32 res_base_size;
++	/* Resource number */
++	u32 res_num;
++
++};
++
++/* Request to free a previously allocated memory (HOST->VC) */
++struct vc_sm_free_t {
++	/* Resource handle (returned from alloc) */
++	u32 res_handle;
++	/* Resource buffer (returned from alloc) */
++	u32 res_mem;
++
++};
++
++/* Request to lock a previously allocated memory (HOST->VC) */
++struct vc_sm_lock_unlock_t {
++	/* Resource handle (returned from alloc) */
++	u32 res_handle;
++	/* Resource buffer (returned from alloc) */
++	u32 res_mem;
++
++};
++
++/* Request to resize a previously allocated memory (HOST->VC) */
++struct vc_sm_resize_t {
++	/* Resource handle (returned from alloc) */
++	u32 res_handle;
++	/* Resource buffer (returned from alloc) */
++	u32 res_mem;
++	/* Resource *new* size requested (bytes) */
++	u32 res_new_size;
++
++};
++
++/* Result of a requested memory lock (VC->HOST) */
++struct vc_sm_lock_result_t {
++	/* Transaction identifier */
++	u32 trans_id;
++
++	/* Resource handle */
++	u32 res_handle;
++	/* Pointer to resource buffer */
++	u32 res_mem;
++	/*
++	 * Pointer to former resource buffer if the memory
++	 * was reallocated
++	 */
++	u32 res_old_mem;
++
++};
++
++/* Generic result for a request (VC->HOST) */
++struct vc_sm_result_t {
++	/* Transaction identifier */
++	u32 trans_id;
++
++	s32 success;
++
++};
++
++/* Request to revert a previously applied action (HOST->VC) */
++struct vc_sm_action_clean_t {
++	/* Action of interest */
++	enum vc_sm_msg_type res_action;
++	/* Transaction identifier for the action of interest */
++	u32 action_trans_id;
++
++};
++
++/* Request to remove all data associated with a given allocator (HOST->VC) */
++struct vc_sm_free_all_t {
++	/* Allocator identifier */
++	u32 allocator;
++};
++
++/* Request to import memory (HOST->VC) */
++struct vc_sm_import {
++	/* type of memory to allocate */
++	enum vc_sm_alloc_type_t type;
++	/* pointer to the VC (ie physical) address of the allocated memory */
++	u32 addr;
++	/* size of buffer */
++	u32 size;
++	/* opaque handle returned in RELEASED messages */
++	u32 kernel_id;
++	/* Allocator identifier */
++	u32 allocator;
++	/* resource name (for easier tracking on vc side) */
++	char     name[VC_SM_RESOURCE_NAME];
++};
++
++/* Result of a requested memory import (VC->HOST) */
++struct vc_sm_import_result {
++	/* Transaction identifier */
++	u32 trans_id;
++
++	/* Resource handle */
++	u32 res_handle;
++};
++
++/* Notification that VC has finished with an allocation (VC->HOST) */
++struct vc_sm_released {
++	/* cmd type / trans_id */
++	u32 cmd;
++
++	/* pointer to the VC (ie physical) address of the allocated memory */
++	u32 addr;
++	/* size of buffer */
++	u32 size;
++	/* opaque handle returned in RELEASED messages */
++	u32 kernel_id;
++	u32 vc_handle;
++};
++
++/*
++ * Client informing VC as to the protocol version it supports.
++ * >=2 requires the released callback, and supports VC asking for memory.
++ * Failure means that the firmware doesn't support this call, and therefore the
++ * client should either fail, or NOT rely on getting the released callback.
++ */
++struct vc_sm_version {
++	u32 version;
++};
++
++/* Request FROM VideoCore for some memory */
++struct vc_sm_vc_mem_request {
++	/* cmd type */
++	u32 cmd;
++
++	/* trans_id (from VPU) */
++	u32 trans_id;
++	/* size of buffer */
++	u32 size;
++	/* alignment of buffer */
++	u32 align;
++	/* resource name (for easier tracking) */
++	char     name[VC_SM_RESOURCE_NAME];
++	/* VPU handle for the resource */
++	u32 vc_handle;
++};
++
++/* Response from the kernel to provide the VPU with some memory */
++struct vc_sm_vc_mem_request_result {
++	/* Transaction identifier for the VPU */
++	u32 trans_id;
++	/* pointer to the physical address of the allocated memory */
++	u32 addr;
++	/* opaque handle returned in RELEASED messages */
++	u32 kernel_id;
++};
++
++/* Union of ALL messages */
++union vc_sm_msg_union_t {
++	struct vc_sm_alloc_t alloc;
++	struct vc_sm_alloc_result_t alloc_result;
++	struct vc_sm_free_t free;
++	struct vc_sm_lock_unlock_t lock_unlock;
++	struct vc_sm_action_clean_t action_clean;
++	struct vc_sm_resize_t resize;
++	struct vc_sm_lock_result_t lock_result;
++	struct vc_sm_result_t result;
++	struct vc_sm_free_all_t free_all;
++	struct vc_sm_import import;
++	struct vc_sm_import_result import_result;
++	struct vc_sm_version version;
++	struct vc_sm_released released;
++	struct vc_sm_vc_mem_request vc_request;
++	struct vc_sm_vc_mem_request_result vc_request_result;
++};
++
++#endif /* __VC_SM_DEFS_H__INCLUDED__ */
+--- /dev/null
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h
+@@ -0,0 +1,28 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++
++/*
++ * VideoCore Shared Memory CMA allocator
++ *
++ * Copyright: 2018, Raspberry Pi (Trading) Ltd
++ *
++ * Based on vc_sm_defs.h from the vmcs_sm driver Copyright Broadcom Corporation.
++ *
++ */
++
++#ifndef __VC_SM_KNL_H__INCLUDED__
++#define __VC_SM_KNL_H__INCLUDED__
++
++#if !defined(__KERNEL__)
++#error "This interface is for kernel use only..."
++#endif
++
++/* Free a previously allocated or imported shared memory handle and block. */
++int vc_sm_cma_free(void *handle);
++
++/* Get an internal resource handle mapped from the external one. */
++int vc_sm_cma_int_handle(void *handle);
++
++/* Import a block of memory into the GPU space. */
++int vc_sm_cma_import_dmabuf(struct dma_buf *dmabuf, void **handle);
++
++#endif /* __VC_SM_KNL_H__INCLUDED__ */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0297-staging-vchiq-mmal-Add-support-for-14bit-Bayer.patch b/target/linux/bcm27xx/patches-5.15/950-0297-staging-vchiq-mmal-Add-support-for-14bit-Bayer.patch
new file mode 100644
index 0000000000..adc633ca33
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0297-staging-vchiq-mmal-Add-support-for-14bit-Bayer.patch
@@ -0,0 +1,27 @@
+From 7e18408f1d7b299cc8a0da38c039a958a2789883 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 6 May 2020 18:09:04 +0100
+Subject: [PATCH] staging: vchiq-mmal: Add support for 14bit Bayer
+
+Add in the missing defines.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
+@@ -90,6 +90,12 @@
+ #define MMAL_ENCODING_BAYER_SGBRG12P   MMAL_FOURCC('p', 'G', '1', '2')
+ #define MMAL_ENCODING_BAYER_SRGGB12P   MMAL_FOURCC('p', 'R', '1', '2')
+ 
++//14 bit per pixel Bayer formats.
++#define MMAL_ENCODING_BAYER_SBGGR14P   MMAL_FOURCC('p', 'B', 'E', 'E')
++#define MMAL_ENCODING_BAYER_SGBRG14P   MMAL_FOURCC('p', 'G', 'E', 'E')
++#define MMAL_ENCODING_BAYER_SGRBG14P   MMAL_FOURCC('p', 'g', 'E', 'E')
++#define MMAL_ENCODING_BAYER_SRGGB14P   MMAL_FOURCC('p', 'R', 'E', 'E')
++
+ /* 16 bit per pixel Bayer formats. */
+ #define MMAL_ENCODING_BAYER_SBGGR16    MMAL_FOURCC('B', 'G', '1', '6')
+ #define MMAL_ENCODING_BAYER_SGBRG16    MMAL_FOURCC('G', 'B', '1', '6')
diff --git a/target/linux/bcm27xx/patches-5.15/950-0298-staging-mmal-vchiq-Add-monochrome-image-formats.patch b/target/linux/bcm27xx/patches-5.15/950-0298-staging-mmal-vchiq-Add-monochrome-image-formats.patch
new file mode 100644
index 0000000000..96cfd482d5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0298-staging-mmal-vchiq-Add-monochrome-image-formats.patch
@@ -0,0 +1,29 @@
+From 0bb786409f66c71c805e0451619c44d4e022e59c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 6 May 2020 18:11:14 +0100
+Subject: [PATCH] staging: mmal-vchiq: Add monochrome image formats
+
+Adds support for monochrome image formats in the various
+MIPI packings.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
+@@ -102,6 +102,13 @@
+ #define MMAL_ENCODING_BAYER_SGRBG16    MMAL_FOURCC('G', 'R', '1', '6')
+ #define MMAL_ENCODING_BAYER_SRGGB16    MMAL_FOURCC('R', 'G', '1', '6')
+ 
++/* MIPI packed monochrome images */
++#define MMAL_ENCODING_GREY    MMAL_FOURCC('G', 'R', 'E', 'Y')
++#define MMAL_ENCODING_Y10P    MMAL_FOURCC('Y', '1', '0', 'P')
++#define MMAL_ENCODING_Y12P    MMAL_FOURCC('Y', '1', '2', 'P')
++#define MMAL_ENCODING_Y14P    MMAL_FOURCC('Y', '1', '4', 'P')
++#define MMAL_ENCODING_Y16     MMAL_FOURCC('Y', '1', '6', ' ')
++
+ /** An EGL image handle
+  */
+ #define MMAL_ENCODING_EGL_IMAGE        MMAL_FOURCC('E', 'G', 'L', 'I')
diff --git a/target/linux/bcm27xx/patches-5.15/950-0299-staging-mmal-vchiq-Use-vc-sm-cma-to-support-zero-cop.patch b/target/linux/bcm27xx/patches-5.15/950-0299-staging-mmal-vchiq-Use-vc-sm-cma-to-support-zero-cop.patch
new file mode 100644
index 0000000000..6a58041e94
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0299-staging-mmal-vchiq-Use-vc-sm-cma-to-support-zero-cop.patch
@@ -0,0 +1,162 @@
+From 7de61a52d473ac56e3ab1431da52cb2c3a0476f6 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 25 Sep 2018 16:07:55 +0100
+Subject: [PATCH] staging: mmal-vchiq: Use vc-sm-cma to support zero
+ copy
+
+With the vc-sm-cma driver we can support zero copy of buffers between
+the kernel and VPU. Add this support to mmal-vchiq.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/vchiq-mmal/Kconfig  |  1 +
+ .../vc04_services/vchiq-mmal/mmal-common.h    |  4 ++
+ .../vc04_services/vchiq-mmal/mmal-vchiq.c     | 65 ++++++++++++++++++-
+ .../vc04_services/vchiq-mmal/mmal-vchiq.h     |  1 +
+ 4 files changed, 69 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/Kconfig
++++ b/drivers/staging/vc04_services/vchiq-mmal/Kconfig
+@@ -1,6 +1,7 @@
+ config BCM2835_VCHIQ_MMAL
+ 	tristate "BCM2835 MMAL VCHIQ service"
+ 	depends on BCM2835_VCHIQ
++	select BCM_VC_SM_CMA
+ 	help
+ 	  Enables the MMAL API over VCHIQ interface as used for the
+ 	  majority of the multimedia services on VideoCore.
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
+@@ -50,6 +50,10 @@ struct mmal_buffer {
+ 
+ 	struct mmal_msg_context *msg_context;
+ 
++	struct dma_buf *dma_buf;/* Exported dmabuf fd from videobuf2 */
++	void *vcsm_handle;	/* VCSM handle having imported the dmabuf */
++	u32 vc_handle;		/* VC handle to that dmabuf */
++
+ 	u32 cmd;		/* MMAL command. 0=data. */
+ 	unsigned long length;
+ 	u32 mmal_flags;
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -27,9 +27,11 @@
+ #include <media/videobuf2-vmalloc.h>
+ 
+ #include "mmal-common.h"
++#include "mmal-parameters.h"
+ #include "mmal-vchiq.h"
+ #include "mmal-msg.h"
+ 
++#include "vc-sm-cma/vc_sm_knl.h"
+ /*
+  * maximum number of components supported.
+  * This matches the maximum permitted by default on the VPU
+@@ -419,8 +421,13 @@ buffer_from_host(struct vchiq_mmal_insta
+ 
+ 	/* buffer header */
+ 	m.u.buffer_from_host.buffer_header.cmd = 0;
+-	m.u.buffer_from_host.buffer_header.data =
+-		(u32)(unsigned long)buf->buffer;
++	if (port->zero_copy) {
++		m.u.buffer_from_host.buffer_header.data = buf->vc_handle;
++	} else {
++		m.u.buffer_from_host.buffer_header.data =
++			(u32)(unsigned long)buf->buffer;
++	}
++
+ 	m.u.buffer_from_host.buffer_header.alloc_size = buf->buffer_size;
+ 	if (port->type == MMAL_PORT_TYPE_OUTPUT) {
+ 		m.u.buffer_from_host.buffer_header.length = 0;
+@@ -586,6 +593,22 @@ static void buffer_to_host_cb(struct vch
+ 
+ 		msg_context->u.bulk.status = msg->h.status;
+ 
++	} else if (msg->u.buffer_from_host.is_zero_copy) {
++		/*
++		 * Zero copy buffer, so nothing to do.
++		 * Copy buffer info and make callback.
++		 */
++		msg_context->u.bulk.buffer_used =
++				msg->u.buffer_from_host.buffer_header.length;
++		msg_context->u.bulk.mmal_flags =
++				msg->u.buffer_from_host.buffer_header.flags;
++		msg_context->u.bulk.dts =
++				msg->u.buffer_from_host.buffer_header.dts;
++		msg_context->u.bulk.pts =
++				msg->u.buffer_from_host.buffer_header.pts;
++		msg_context->u.bulk.cmd =
++				msg->u.buffer_from_host.buffer_header.cmd;
++
+ 	} else if (msg->u.buffer_from_host.buffer_header.length == 0) {
+ 		/* empty buffer */
+ 		if (msg->u.buffer_from_host.buffer_header.flags &
+@@ -1530,6 +1553,9 @@ int vchiq_mmal_port_parameter_set(struct
+ 
+ 	mutex_unlock(&instance->vchiq_mutex);
+ 
++	if (parameter == MMAL_PARAMETER_ZERO_COPY && !ret)
++		port->zero_copy = !!(*(bool *)value);
++
+ 	return ret;
+ }
+ EXPORT_SYMBOL_GPL(vchiq_mmal_port_parameter_set);
+@@ -1698,6 +1724,31 @@ int vchiq_mmal_submit_buffer(struct vchi
+ 	unsigned long flags = 0;
+ 	int ret;
+ 
++	/*
++	 * We really want to do this in mmal_vchi_buffer_init but can't as
++	 * videobuf2 won't let us have the dmabuf there.
++	 */
++	if (port->zero_copy && buffer->dma_buf && !buffer->vcsm_handle) {
++		pr_debug("%s: import dmabuf %p\n", __func__, buffer->dma_buf);
++		ret = vc_sm_cma_import_dmabuf(buffer->dma_buf,
++					      &buffer->vcsm_handle);
++		if (ret) {
++			pr_err("%s: vc_sm_import_dmabuf_fd failed, ret %d\n",
++			       __func__, ret);
++			return ret;
++		}
++
++		buffer->vc_handle = vc_sm_cma_int_handle(buffer->vcsm_handle);
++		if (!buffer->vc_handle) {
++			pr_err("%s: vc_sm_int_handle failed %d\n",
++			       __func__, ret);
++			vc_sm_cma_free(buffer->vcsm_handle);
++			return ret;
++		}
++		pr_debug("%s: import dmabuf %p - got vc handle %08X\n",
++			 __func__, buffer->dma_buf, buffer->vc_handle);
++	}
++
+ 	ret = buffer_from_host(instance, port, buffer);
+ 	if (ret == -EINVAL) {
+ 		/* Port is disabled. Queue for when it is enabled. */
+@@ -1731,6 +1782,16 @@ int mmal_vchi_buffer_cleanup(struct mmal
+ 		release_msg_context(msg_context);
+ 	buf->msg_context = NULL;
+ 
++	if (buf->vcsm_handle) {
++		int ret;
++
++		pr_debug("%s: vc_sm_cma_free on handle %p\n", __func__,
++			 buf->vcsm_handle);
++		ret = vc_sm_cma_free(buf->vcsm_handle);
++		if (ret)
++			pr_err("%s: vcsm_free failed, ret %d\n", __func__, ret);
++		buf->vcsm_handle = 0;
++	}
+ 	return 0;
+ }
+ EXPORT_SYMBOL_GPL(mmal_vchi_buffer_cleanup);
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
+@@ -49,6 +49,7 @@ typedef void (*vchiq_mmal_buffer_cb)(
+ 
+ struct vchiq_mmal_port {
+ 	u32 enabled:1;
++	u32 zero_copy:1;
+ 	u32 handle;
+ 	u32 type; /* port type, cached to use on port info set */
+ 	u32 index; /* port index, cached to use on port info set */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0300-staging-vc04_services-Add-a-V4L2-M2M-codec-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0300-staging-vc04_services-Add-a-V4L2-M2M-codec-driver.patch
new file mode 100644
index 0000000000..97784f833c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0300-staging-vc04_services-Add-a-V4L2-M2M-codec-driver.patch
@@ -0,0 +1,3153 @@
+From ce81c616a15c8b57fbe0e10ebceffef81a30f156 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 8 Oct 2020 20:24:12 +0100
+Subject: [PATCH] staging: vc04_services: Add a V4L2 M2M codec driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This adds a V4L2 memory to memory device that wraps the MMAL
+video decode and video_encode components for H264 and MJPEG encode
+and decode, MPEG4, H263, and VP8 decode (and MPEG2 decode
+if the appropriate licence has been purchased).
+
+This patch squashes all the work done in developing the driver
+on the Raspberry Pi rpi-5.4.y kernel branch.
+Thanks to Kieran Bingham, Aman Gupta, Chen-Yu Tsai, and
+Marek Behún for their contributions. Please refer to the
+rpi-5.4.y branch for the full history.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+staging/bcm2835-codec: Ensure OUTPUT timestamps are always forwarded
+
+The firmware by default tries to ensure that decoded frame
+timestamps always increment. This is counter to the V4L2 API
+which wants exactly the OUTPUT queue timestamps passed to the
+CAPTURE queue buffers.
+
+Disable the firmware option.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+staging/vc04_services/codec: Add support for CID MPEG_HEADER_MODE
+
+Control V4L2_CID_MPEG_VIDEO_HEADER_MODE controls whether the encoder
+is meant to emit the header bytes as a separate packet or with the
+first encoded frame.
+Add support for it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+staging/vc04_services/codec: Clear last buf dequeued flag on START
+
+It appears that the V4L2 M2M framework requires the driver to manually
+call vb2_clear_last_buffer_dequeued on the CAPTURE queue during a
+V4L2_DEC_CMD_START.
+Add such a call.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+staging/vc04-services/codec: Fix logical precedence issue
+
+Two issues identified with operator precedence in logical
+expressions. Fix them.
+
+https://github.com/raspberrypi/linux/issues/4040
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/Kconfig         |    1 +
+ drivers/staging/vc04_services/Makefile        |    1 +
+ .../vc04_services/bcm2835-codec/Kconfig       |   11 +
+ .../vc04_services/bcm2835-codec/Makefile      |    8 +
+ .../staging/vc04_services/bcm2835-codec/TODO  |    1 +
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 3016 +++++++++++++++++
+ .../vchiq-mmal/mmal-parameters.h              |    3 +
+ 7 files changed, 3041 insertions(+)
+ create mode 100644 drivers/staging/vc04_services/bcm2835-codec/Kconfig
+ create mode 100644 drivers/staging/vc04_services/bcm2835-codec/Makefile
+ create mode 100644 drivers/staging/vc04_services/bcm2835-codec/TODO
+ create mode 100644 drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+
+--- a/drivers/staging/vc04_services/Kconfig
++++ b/drivers/staging/vc04_services/Kconfig
+@@ -44,6 +44,7 @@ source "drivers/staging/vc04_services/bc
+ source "drivers/staging/vc04_services/bcm2835-camera/Kconfig"
+ 
+ source "drivers/staging/vc04_services/vc-sm-cma/Kconfig"
++source "drivers/staging/vc04_services/bcm2835-codec/Kconfig"
+ 
+ source "drivers/staging/vc04_services/vchiq-mmal/Kconfig"
+ 
+--- a/drivers/staging/vc04_services/Makefile
++++ b/drivers/staging/vc04_services/Makefile
+@@ -15,6 +15,7 @@ obj-$(CONFIG_SND_BCM2835)		+= bcm2835-au
+ obj-$(CONFIG_VIDEO_BCM2835)		+= bcm2835-camera/
+ obj-$(CONFIG_BCM2835_VCHIQ_MMAL)	+= vchiq-mmal/
+ obj-$(CONFIG_BCM_VC_SM_CMA)		+= vc-sm-cma/
++obj-$(CONFIG_VIDEO_CODEC_BCM2835)	+= bcm2835-codec/
+ 
+ ccflags-y += -I $(srctree)/$(src)/include
+ 
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-codec/Kconfig
+@@ -0,0 +1,11 @@
++config VIDEO_CODEC_BCM2835
++	tristate "BCM2835 Video codec support"
++	depends on MEDIA_SUPPORT && MEDIA_CONTROLLER
++	depends on VIDEO_V4L2 && (ARCH_BCM2835 || COMPILE_TEST)
++	select BCM2835_VCHIQ_MMAL
++	select VIDEOBUF2_DMA_CONTIG
++	select V4L2_MEM2MEM_DEV
++	help
++	  Say Y here to enable the V4L2 video codecs for
++	  Broadcom BCM2835 SoC. This operates over the VCHIQ interface
++	  to a service running on VideoCore.
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-codec/Makefile
+@@ -0,0 +1,8 @@
++# SPDX-License-Identifier: GPL-2.0
++bcm2835-codec-objs := bcm2835-v4l2-codec.o
++
++obj-$(CONFIG_VIDEO_CODEC_BCM2835) += bcm2835-codec.o
++
++ccflags-y += \
++	-I$(srctree)/drivers/staging/vc04_services \
++	-D__VCCOREVER__=0x04000000
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-codec/TODO
+@@ -0,0 +1 @@
++No issues. Depends on VCHIQ which is in staging.
+\ No newline at end of file
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -0,0 +1,3016 @@
++// SPDX-License-Identifier: GPL-2.0
++
++/*
++ * A v4l2-mem2mem device that wraps the video codec MMAL component.
++ *
++ * Copyright 2018 Raspberry Pi (Trading) Ltd.
++ * Author: Dave Stevenson (dave.stevenson@raspberrypi.com)
++ *
++ * Loosely based on the vim2m virtual driver by Pawel Osciak
++ * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
++ * Pawel Osciak, <pawel@osciak.com>
++ * Marek Szyprowski, <m.szyprowski@samsung.com>
++ *
++ * Whilst this driver uses the v4l2_mem2mem framework, it does not need the
++ * scheduling aspects, so will always take the buffers, pass them to the VPU,
++ * and then signal the job as complete.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by the
++ * Free Software Foundation; either version 2 of the
++ * License, or (at your option) any later version
++ */
++#include <linux/module.h>
++#include <linux/delay.h>
++#include <linux/fs.h>
++#include <linux/timer.h>
++#include <linux/sched.h>
++#include <linux/slab.h>
++#include <linux/platform_device.h>
++#include <linux/syscalls.h>
++
++#include <media/v4l2-mem2mem.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-ioctl.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-event.h>
++#include <media/videobuf2-dma-contig.h>
++
++#include "vchiq-mmal/mmal-encodings.h"
++#include "vchiq-mmal/mmal-msg.h"
++#include "vchiq-mmal/mmal-parameters.h"
++#include "vchiq-mmal/mmal-vchiq.h"
++
++/*
++ * Default /dev/videoN node numbers for decode and encode.
++ * Deliberately avoid the very low numbers as these are often taken by webcams
++ * etc, and simple apps tend to only go for /dev/video0.
++ */
++static int decode_video_nr = 10;
++module_param(decode_video_nr, int, 0644);
++MODULE_PARM_DESC(decode_video_nr, "decoder video device number");
++
++static int encode_video_nr = 11;
++module_param(encode_video_nr, int, 0644);
++MODULE_PARM_DESC(encode_video_nr, "encoder video device number");
++
++static int isp_video_nr = 12;
++module_param(isp_video_nr, int, 0644);
++MODULE_PARM_DESC(isp_video_nr, "isp video device number");
++
++/*
++ * Workaround for GStreamer v4l2convert component not considering Bayer formats
++ * as raw, and therefore not considering a V4L2 device that supports them as
++ * a suitable candidate.
++ */
++static bool disable_bayer;
++module_param(disable_bayer, bool, 0644);
++MODULE_PARM_DESC(disable_bayer, "Disable support for Bayer formats");
++
++static unsigned int debug;
++module_param(debug, uint, 0644);
++MODULE_PARM_DESC(debug, "activates debug info (0-3)");
++
++enum bcm2835_codec_role {
++	DECODE,
++	ENCODE,
++	ISP,
++};
++
++static const char * const roles[] = {
++	"decode",
++	"encode",
++	"isp"
++};
++
++static const char * const components[] = {
++	"ril.video_decode",
++	"ril.video_encode",
++	"ril.isp",
++};
++
++/* Timeout for stop_streaming to allow all buffers to return */
++#define COMPLETE_TIMEOUT (2 * HZ)
++
++#define MIN_W		32
++#define MIN_H		32
++#define MAX_W		1920
++#define MAX_H		1920
++#define BPL_ALIGN	32
++#define DEFAULT_WIDTH	640
++#define DEFAULT_HEIGHT	480
++/*
++ * The unanswered question - what is the maximum size of a compressed frame?
++ * V4L2 mandates that the encoded frame must fit in a single buffer. Sizing
++ * that buffer is a compromise between wasting memory and risking not fitting.
++ * The 1080P version of Big Buck Bunny has some frames that exceed 512kB.
++ * Adopt a moderately arbitrary split at 720P for switching between 512 and
++ * 768kB buffers.
++ */
++#define DEF_COMP_BUF_SIZE_GREATER_720P	(768 << 10)
++#define DEF_COMP_BUF_SIZE_720P_OR_LESS	(512 << 10)
++
++/* Flags that indicate a format can be used for capture/output */
++#define MEM2MEM_CAPTURE		BIT(0)
++#define MEM2MEM_OUTPUT		BIT(1)
++
++#define MEM2MEM_NAME		"bcm2835-codec"
++
++struct bcm2835_codec_fmt {
++	u32	fourcc;
++	int	depth;
++	int	bytesperline_align;
++	u32	flags;
++	u32	mmal_fmt;
++	int	size_multiplier_x2;
++	bool	is_bayer;
++};
++
++static const struct bcm2835_codec_fmt supported_formats[] = {
++	{
++		/* YUV formats */
++		.fourcc			= V4L2_PIX_FMT_YUV420,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_I420,
++		.size_multiplier_x2	= 3,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_YVU420,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_YV12,
++		.size_multiplier_x2	= 3,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_NV12,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_NV12,
++		.size_multiplier_x2	= 3,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_NV21,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_NV21,
++		.size_multiplier_x2	= 3,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_RGB565,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_RGB16,
++		.size_multiplier_x2	= 2,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_YUYV,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_YUYV,
++		.size_multiplier_x2	= 2,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_UYVY,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_UYVY,
++		.size_multiplier_x2	= 2,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_YVYU,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_YVYU,
++		.size_multiplier_x2	= 2,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_VYUY,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_VYUY,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* RGB formats */
++		.fourcc			= V4L2_PIX_FMT_RGB24,
++		.depth			= 24,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_RGB24,
++		.size_multiplier_x2	= 2,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_BGR24,
++		.depth			= 24,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BGR24,
++		.size_multiplier_x2	= 2,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_BGR32,
++		.depth			= 32,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BGRA,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* Bayer formats */
++		/* 8 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB8,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB8,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR8,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR8,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG8,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG8,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG8,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG8,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		/* 10 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB10P,
++		.depth			= 10,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB10P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR10P,
++		.depth			= 10,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR10P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG10P,
++		.depth			= 10,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG10P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG10P,
++		.depth			= 10,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG10P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		/* 12 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB12P,
++		.depth			= 12,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB12P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR12P,
++		.depth			= 12,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR12P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG12P,
++		.depth			= 12,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG12P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG12P,
++		.depth			= 12,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG12P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		/* 14 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB14P,
++		.depth			= 14,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB14P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR14P,
++		.depth			= 14,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR14P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG14P,
++		.depth			= 14,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG14P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG14P,
++		.depth			= 14,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG14P,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		/* 16 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB16,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB16,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR16,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR16,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG16,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG16,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG16,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG16,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		/* Monochrome MIPI formats */
++		/* 8 bit */
++		.fourcc			= V4L2_PIX_FMT_GREY,
++		.depth			= 8,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_GREY,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* 10 bit */
++		.fourcc			= V4L2_PIX_FMT_Y10P,
++		.depth			= 10,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_Y10P,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* 12 bit */
++		.fourcc			= V4L2_PIX_FMT_Y12P,
++		.depth			= 12,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_Y12P,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* 14 bit */
++		.fourcc			= V4L2_PIX_FMT_Y14P,
++		.depth			= 14,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_Y14P,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* 16 bit */
++		.fourcc			= V4L2_PIX_FMT_Y16,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_Y16,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* Compressed formats */
++		.fourcc			= V4L2_PIX_FMT_H264,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_H264,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_MJPEG,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_MJPEG,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_MPEG4,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_MP4V,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_H263,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_H263,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_MPEG2,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_MP2V,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_VP8,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_VP8,
++	},
++};
++
++struct bcm2835_codec_fmt_list {
++	struct bcm2835_codec_fmt *list;
++	unsigned int num_entries;
++};
++
++struct m2m_mmal_buffer {
++	struct v4l2_m2m_buffer	m2m;
++	struct mmal_buffer	mmal;
++};
++
++/* Per-queue, driver-specific private data */
++struct bcm2835_codec_q_data {
++	/*
++	 * These parameters should be treated as gospel, with everything else
++	 * being determined from them.
++	 */
++	/* Buffer width/height */
++	unsigned int		bytesperline;
++	unsigned int		height;
++	/* Crop size used for selection handling */
++	unsigned int		crop_width;
++	unsigned int		crop_height;
++	bool			selection_set;
++
++	unsigned int		sizeimage;
++	unsigned int		sequence;
++	struct bcm2835_codec_fmt	*fmt;
++
++	/* One extra buffer header so we can send an EOS. */
++	struct m2m_mmal_buffer	eos_buffer;
++	bool			eos_buffer_in_use;	/* debug only */
++};
++
++struct bcm2835_codec_dev {
++	struct platform_device *pdev;
++
++	/* v4l2 devices */
++	struct v4l2_device	v4l2_dev;
++	struct video_device	vfd;
++	/* mutex for the v4l2 device */
++	struct mutex		dev_mutex;
++	atomic_t		num_inst;
++
++	/* allocated mmal instance and components */
++	enum bcm2835_codec_role	role;
++	/* The list of formats supported on input and output queues. */
++	struct bcm2835_codec_fmt_list	supported_fmts[2];
++
++	struct vchiq_mmal_instance	*instance;
++
++	struct v4l2_m2m_dev	*m2m_dev;
++};
++
++struct bcm2835_codec_ctx {
++	struct v4l2_fh		fh;
++	struct bcm2835_codec_dev	*dev;
++
++	struct v4l2_ctrl_handler hdl;
++
++	struct vchiq_mmal_component  *component;
++	bool component_enabled;
++
++	enum v4l2_colorspace	colorspace;
++	enum v4l2_ycbcr_encoding ycbcr_enc;
++	enum v4l2_xfer_func	xfer_func;
++	enum v4l2_quantization	quant;
++
++	/* Source and destination queue data */
++	struct bcm2835_codec_q_data   q_data[2];
++	s32  bitrate;
++	unsigned int	framerate_num;
++	unsigned int	framerate_denom;
++
++	bool aborting;
++	int num_ip_buffers;
++	int num_op_buffers;
++	struct completion frame_cmplt;
++};
++
++struct bcm2835_codec_driver {
++	struct platform_device *pdev;
++	struct media_device	mdev;
++
++	struct bcm2835_codec_dev *encode;
++	struct bcm2835_codec_dev *decode;
++	struct bcm2835_codec_dev *isp;
++};
++
++enum {
++	V4L2_M2M_SRC = 0,
++	V4L2_M2M_DST = 1,
++};
++
++static const struct bcm2835_codec_fmt *get_fmt(u32 mmal_fmt)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(supported_formats); i++) {
++		if (supported_formats[i].mmal_fmt == mmal_fmt &&
++		    (!disable_bayer || !supported_formats[i].is_bayer))
++			return &supported_formats[i];
++	}
++	return NULL;
++}
++
++static inline
++struct bcm2835_codec_fmt_list *get_format_list(struct bcm2835_codec_dev *dev,
++					       bool capture)
++{
++	return &dev->supported_fmts[capture ? 1 : 0];
++}
++
++static
++struct bcm2835_codec_fmt *get_default_format(struct bcm2835_codec_dev *dev,
++					     bool capture)
++{
++	return &dev->supported_fmts[capture ? 1 : 0].list[0];
++}
++
++static
++struct bcm2835_codec_fmt *find_format_pix_fmt(u32 pix_fmt,
++					      struct bcm2835_codec_dev *dev,
++					      bool capture)
++{
++	struct bcm2835_codec_fmt *fmt;
++	unsigned int k;
++	struct bcm2835_codec_fmt_list *fmts =
++					&dev->supported_fmts[capture ? 1 : 0];
++
++	for (k = 0; k < fmts->num_entries; k++) {
++		fmt = &fmts->list[k];
++		if (fmt->fourcc == pix_fmt)
++			break;
++	}
++	if (k == fmts->num_entries)
++		return NULL;
++
++	return &fmts->list[k];
++}
++
++static inline
++struct bcm2835_codec_fmt *find_format(struct v4l2_format *f,
++				      struct bcm2835_codec_dev *dev,
++				      bool capture)
++{
++	return find_format_pix_fmt(f->fmt.pix_mp.pixelformat, dev, capture);
++}
++
++static inline struct bcm2835_codec_ctx *file2ctx(struct file *file)
++{
++	return container_of(file->private_data, struct bcm2835_codec_ctx, fh);
++}
++
++static struct bcm2835_codec_q_data *get_q_data(struct bcm2835_codec_ctx *ctx,
++					       enum v4l2_buf_type type)
++{
++	switch (type) {
++	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
++		return &ctx->q_data[V4L2_M2M_SRC];
++	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
++		return &ctx->q_data[V4L2_M2M_DST];
++	default:
++		v4l2_err(&ctx->dev->v4l2_dev, "%s: Invalid queue type %u\n",
++			 __func__, type);
++		break;
++	}
++	return NULL;
++}
++
++static struct vchiq_mmal_port *get_port_data(struct bcm2835_codec_ctx *ctx,
++					     enum v4l2_buf_type type)
++{
++	if (!ctx->component)
++		return NULL;
++
++	switch (type) {
++	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
++		return &ctx->component->input[0];
++	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
++		return &ctx->component->output[0];
++	default:
++		v4l2_err(&ctx->dev->v4l2_dev, "%s: Invalid queue type %u\n",
++			 __func__, type);
++		break;
++	}
++	return NULL;
++}
++
++/*
++ * mem2mem callbacks
++ */
++
++/*
++ * job_ready() - check whether an instance is ready to be scheduled to run
++ */
++static int job_ready(void *priv)
++{
++	struct bcm2835_codec_ctx *ctx = priv;
++
++	if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) &&
++	    !v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx))
++		return 0;
++
++	return 1;
++}
++
++static void job_abort(void *priv)
++{
++	struct bcm2835_codec_ctx *ctx = priv;
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s\n", __func__);
++	/* Will cancel the transaction in the next interrupt handler */
++	ctx->aborting = 1;
++}
++
++static inline unsigned int get_sizeimage(int bpl, int width, int height,
++					 struct bcm2835_codec_fmt *fmt)
++{
++	if (fmt->flags & V4L2_FMT_FLAG_COMPRESSED) {
++		if (width * height > 1280 * 720)
++			return DEF_COMP_BUF_SIZE_GREATER_720P;
++		else
++			return DEF_COMP_BUF_SIZE_720P_OR_LESS;
++	} else {
++		return (bpl * height * fmt->size_multiplier_x2) >> 1;
++	}
++}
++
++static inline unsigned int get_bytesperline(int width,
++					    struct bcm2835_codec_fmt *fmt)
++{
++	return ALIGN((width * fmt->depth) >> 3, fmt->bytesperline_align);
++}
++
++static void setup_mmal_port_format(struct bcm2835_codec_ctx *ctx,
++				   struct bcm2835_codec_q_data *q_data,
++				   struct vchiq_mmal_port *port)
++{
++	port->format.encoding = q_data->fmt->mmal_fmt;
++
++	if (!(q_data->fmt->flags & V4L2_FMT_FLAG_COMPRESSED)) {
++		/* Raw image format - set width/height */
++		port->es.video.width = (q_data->bytesperline << 3) /
++						q_data->fmt->depth;
++		port->es.video.height = q_data->height;
++		port->es.video.crop.width = q_data->crop_width;
++		port->es.video.crop.height = q_data->crop_height;
++		port->es.video.frame_rate.num = ctx->framerate_num;
++		port->es.video.frame_rate.den = ctx->framerate_denom;
++	} else {
++		/* Compressed format - leave resolution as 0 for decode */
++		if (ctx->dev->role == DECODE) {
++			port->es.video.width = 0;
++			port->es.video.height = 0;
++			port->es.video.crop.width = 0;
++			port->es.video.crop.height = 0;
++		} else {
++			port->es.video.width = q_data->crop_width;
++			port->es.video.height = q_data->height;
++			port->es.video.crop.width = q_data->crop_width;
++			port->es.video.crop.height = q_data->crop_height;
++			port->format.bitrate = ctx->bitrate;
++			port->es.video.frame_rate.num = ctx->framerate_num;
++			port->es.video.frame_rate.den = ctx->framerate_denom;
++		}
++	}
++	port->es.video.crop.x = 0;
++	port->es.video.crop.y = 0;
++
++	port->current_buffer.size = q_data->sizeimage;
++};
++
++static void ip_buffer_cb(struct vchiq_mmal_instance *instance,
++			 struct vchiq_mmal_port *port, int status,
++			 struct mmal_buffer *mmal_buf)
++{
++	struct bcm2835_codec_ctx *ctx = port->cb_ctx/*, *curr_ctx*/;
++	struct m2m_mmal_buffer *buf =
++			container_of(mmal_buf, struct m2m_mmal_buffer, mmal);
++
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: port %p buf %p length %lu, flags %x\n",
++		 __func__, port, mmal_buf, mmal_buf->length,
++		 mmal_buf->mmal_flags);
++
++	if (buf == &ctx->q_data[V4L2_M2M_SRC].eos_buffer) {
++		/* Do we need to add lcoking to prevent multiple submission of
++		 * the EOS, and therefore handle mutliple return here?
++		 */
++		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: eos buffer returned.\n",
++			 __func__);
++		ctx->q_data[V4L2_M2M_SRC].eos_buffer_in_use = false;
++		return;
++	}
++
++	if (status) {
++		/* error in transfer */
++		if (buf)
++			/* there was a buffer with the error so return it */
++			vb2_buffer_done(&buf->m2m.vb.vb2_buf,
++					VB2_BUF_STATE_ERROR);
++		return;
++	}
++	if (mmal_buf->cmd) {
++		v4l2_err(&ctx->dev->v4l2_dev, "%s: Not expecting cmd msgs on ip callback - %08x\n",
++			 __func__, mmal_buf->cmd);
++		/*
++		 * CHECKME: Should we return here. The buffer shouldn't have a
++		 * message context or vb2 buf associated.
++		 */
++	}
++
++	v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: no error. Return buffer %p\n",
++		 __func__, &buf->m2m.vb.vb2_buf);
++	vb2_buffer_done(&buf->m2m.vb.vb2_buf, VB2_BUF_STATE_DONE);
++
++	ctx->num_ip_buffers++;
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: done %d input buffers\n",
++		 __func__, ctx->num_ip_buffers);
++
++	if (!port->enabled)
++		complete(&ctx->frame_cmplt);
++}
++
++static void queue_res_chg_event(struct bcm2835_codec_ctx *ctx)
++{
++	static const struct v4l2_event ev_src_ch = {
++		.type = V4L2_EVENT_SOURCE_CHANGE,
++		.u.src_change.changes =
++		V4L2_EVENT_SRC_CH_RESOLUTION,
++	};
++
++	v4l2_event_queue_fh(&ctx->fh, &ev_src_ch);
++}
++
++static void send_eos_event(struct bcm2835_codec_ctx *ctx)
++{
++	static const struct v4l2_event ev = {
++		.type = V4L2_EVENT_EOS,
++	};
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "Sending EOS event\n");
++
++	v4l2_event_queue_fh(&ctx->fh, &ev);
++}
++
++static void color_mmal2v4l(struct bcm2835_codec_ctx *ctx, u32 mmal_color_space)
++{
++	switch (mmal_color_space) {
++	case MMAL_COLOR_SPACE_ITUR_BT601:
++		ctx->colorspace = V4L2_COLORSPACE_REC709;
++		ctx->xfer_func = V4L2_XFER_FUNC_709;
++		ctx->ycbcr_enc = V4L2_YCBCR_ENC_601;
++		ctx->quant = V4L2_QUANTIZATION_LIM_RANGE;
++		break;
++
++	case MMAL_COLOR_SPACE_ITUR_BT709:
++		ctx->colorspace = V4L2_COLORSPACE_REC709;
++		ctx->xfer_func = V4L2_XFER_FUNC_709;
++		ctx->ycbcr_enc = V4L2_YCBCR_ENC_709;
++		ctx->quant = V4L2_QUANTIZATION_LIM_RANGE;
++		break;
++	}
++}
++
++static void handle_fmt_changed(struct bcm2835_codec_ctx *ctx,
++			       struct mmal_buffer *mmal_buf)
++{
++	struct bcm2835_codec_q_data *q_data;
++	struct mmal_msg_event_format_changed *format =
++		(struct mmal_msg_event_format_changed *)mmal_buf->buffer;
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Format changed: buff size min %u, rec %u, buff num min %u, rec %u\n",
++		 __func__,
++		 format->buffer_size_min,
++		 format->buffer_size_recommended,
++		 format->buffer_num_min,
++		 format->buffer_num_recommended
++		);
++	if (format->format.type != MMAL_ES_TYPE_VIDEO) {
++		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Format changed but not video %u\n",
++			 __func__, format->format.type);
++		return;
++	}
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Format changed to %ux%u, crop %ux%u, colourspace %08X\n",
++		 __func__, format->es.video.width, format->es.video.height,
++		 format->es.video.crop.width, format->es.video.crop.height,
++		 format->es.video.color_space);
++
++	q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Format was %ux%u, crop %ux%u\n",
++		 __func__, q_data->bytesperline, q_data->height,
++		 q_data->crop_width, q_data->crop_height);
++
++	q_data->crop_width = format->es.video.crop.width;
++	q_data->crop_height = format->es.video.crop.height;
++	q_data->bytesperline = get_bytesperline(format->es.video.width,
++						q_data->fmt);
++
++	q_data->height = format->es.video.height;
++	q_data->sizeimage = format->buffer_size_min;
++	if (format->es.video.color_space)
++		color_mmal2v4l(ctx, format->es.video.color_space);
++
++	queue_res_chg_event(ctx);
++}
++
++static void op_buffer_cb(struct vchiq_mmal_instance *instance,
++			 struct vchiq_mmal_port *port, int status,
++			 struct mmal_buffer *mmal_buf)
++{
++	struct bcm2835_codec_ctx *ctx = port->cb_ctx;
++	struct m2m_mmal_buffer *buf;
++	struct vb2_v4l2_buffer *vb2;
++
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev,
++		 "%s: status:%d, buf:%p, length:%lu, flags %u, pts %lld\n",
++		 __func__, status, mmal_buf, mmal_buf->length,
++		 mmal_buf->mmal_flags, mmal_buf->pts);
++
++	buf = container_of(mmal_buf, struct m2m_mmal_buffer, mmal);
++	vb2 = &buf->m2m.vb;
++
++	if (status) {
++		/* error in transfer */
++		if (vb2) {
++			/* there was a buffer with the error so return it */
++			vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_ERROR);
++		}
++		return;
++	}
++
++	if (mmal_buf->cmd) {
++		switch (mmal_buf->cmd) {
++		case MMAL_EVENT_FORMAT_CHANGED:
++		{
++			handle_fmt_changed(ctx, mmal_buf);
++			break;
++		}
++		default:
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Unexpected event on output callback - %08x\n",
++				 __func__, mmal_buf->cmd);
++			break;
++		}
++		return;
++	}
++
++	v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: length %lu, flags %x, idx %u\n",
++		 __func__, mmal_buf->length, mmal_buf->mmal_flags,
++		 vb2->vb2_buf.index);
++
++	if (mmal_buf->length == 0) {
++		/* stream ended, or buffer being returned during disable. */
++		v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: Empty buffer - flags %04x",
++			 __func__, mmal_buf->mmal_flags);
++		if (!(mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_EOS)) {
++			vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_ERROR);
++			if (!port->enabled)
++				complete(&ctx->frame_cmplt);
++			return;
++		}
++	}
++	if (mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_EOS) {
++		/* EOS packet from the VPU */
++		send_eos_event(ctx);
++		vb2->flags |= V4L2_BUF_FLAG_LAST;
++	}
++
++	/* vb2 timestamps in nsecs, mmal in usecs */
++	vb2->vb2_buf.timestamp = mmal_buf->pts * 1000;
++
++	vb2_set_plane_payload(&vb2->vb2_buf, 0, mmal_buf->length);
++	if (mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_KEYFRAME)
++		vb2->flags |= V4L2_BUF_FLAG_KEYFRAME;
++
++	vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_DONE);
++	ctx->num_op_buffers++;
++
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: done %d output buffers\n",
++		 __func__, ctx->num_op_buffers);
++
++	if (!port->enabled)
++		complete(&ctx->frame_cmplt);
++}
++
++/* vb2_to_mmal_buffer() - converts vb2 buffer header to MMAL
++ *
++ * Copies all the required fields from a VB2 buffer to the MMAL buffer header,
++ * ready for sending to the VPU.
++ */
++static void vb2_to_mmal_buffer(struct m2m_mmal_buffer *buf,
++			       struct vb2_v4l2_buffer *vb2)
++{
++	u64 pts;
++
++	buf->mmal.mmal_flags = 0;
++	if (vb2->flags & V4L2_BUF_FLAG_KEYFRAME)
++		buf->mmal.mmal_flags |= MMAL_BUFFER_HEADER_FLAG_KEYFRAME;
++
++	/*
++	 * Adding this means that the data must be framed correctly as one frame
++	 * per buffer. The underlying decoder has no such requirement, but it
++	 * will reduce latency as the bistream parser will be kicked immediately
++	 * to parse the frame, rather than relying on its own heuristics for
++	 * when to wake up.
++	 */
++	buf->mmal.mmal_flags |= MMAL_BUFFER_HEADER_FLAG_FRAME_END;
++
++	buf->mmal.length = vb2->vb2_buf.planes[0].bytesused;
++	/*
++	 * Minor ambiguity in the V4L2 spec as to whether passing in a 0 length
++	 * buffer, or one with V4L2_BUF_FLAG_LAST set denotes end of stream.
++	 * Handle either.
++	 */
++	if (!buf->mmal.length || vb2->flags & V4L2_BUF_FLAG_LAST)
++		buf->mmal.mmal_flags |= MMAL_BUFFER_HEADER_FLAG_EOS;
++
++	/* vb2 timestamps in nsecs, mmal in usecs */
++	pts = vb2->vb2_buf.timestamp;
++	do_div(pts, 1000);
++	buf->mmal.pts = pts;
++	buf->mmal.dts = MMAL_TIME_UNKNOWN;
++}
++
++/* device_run() - prepares and starts the device
++ *
++ * This simulates all the immediate preparations required before starting
++ * a device. This will be called by the framework when it decides to schedule
++ * a particular instance.
++ */
++static void device_run(void *priv)
++{
++	struct bcm2835_codec_ctx *ctx = priv;
++	struct bcm2835_codec_dev *dev = ctx->dev;
++	struct vb2_v4l2_buffer *src_buf, *dst_buf;
++	struct m2m_mmal_buffer *src_m2m_buf = NULL, *dst_m2m_buf = NULL;
++	struct v4l2_m2m_buffer *m2m;
++	int ret;
++
++	v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: off we go\n", __func__);
++
++	src_buf = v4l2_m2m_buf_remove(&ctx->fh.m2m_ctx->out_q_ctx);
++	if (src_buf) {
++		m2m = container_of(src_buf, struct v4l2_m2m_buffer, vb);
++		src_m2m_buf = container_of(m2m, struct m2m_mmal_buffer, m2m);
++		vb2_to_mmal_buffer(src_m2m_buf, src_buf);
++
++		ret = vchiq_mmal_submit_buffer(dev->instance,
++					       &ctx->component->input[0],
++					       &src_m2m_buf->mmal);
++		v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: Submitted ip buffer len %lu, pts %llu, flags %04x\n",
++			 __func__, src_m2m_buf->mmal.length,
++			 src_m2m_buf->mmal.pts, src_m2m_buf->mmal.mmal_flags);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed submitting ip buffer\n",
++				 __func__);
++	}
++
++	dst_buf = v4l2_m2m_buf_remove(&ctx->fh.m2m_ctx->cap_q_ctx);
++	if (dst_buf) {
++		m2m = container_of(dst_buf, struct v4l2_m2m_buffer, vb);
++		dst_m2m_buf = container_of(m2m, struct m2m_mmal_buffer, m2m);
++		vb2_to_mmal_buffer(dst_m2m_buf, dst_buf);
++
++		ret = vchiq_mmal_submit_buffer(dev->instance,
++					       &ctx->component->output[0],
++					       &dst_m2m_buf->mmal);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed submitting op buffer\n",
++				 __func__);
++	}
++
++	v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: Submitted src %p, dst %p\n",
++		 __func__, src_m2m_buf, dst_m2m_buf);
++
++	/* Complete the job here. */
++	v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
++}
++
++/*
++ * video ioctls
++ */
++static int vidioc_querycap(struct file *file, void *priv,
++			   struct v4l2_capability *cap)
++{
++	struct bcm2835_codec_dev *dev = video_drvdata(file);
++
++	strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1);
++	strncpy(cap->card, dev->vfd.name, sizeof(cap->card) - 1);
++	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
++		 MEM2MEM_NAME);
++	return 0;
++}
++
++static int enum_fmt(struct v4l2_fmtdesc *f, struct bcm2835_codec_ctx *ctx,
++		    bool capture)
++{
++	struct bcm2835_codec_fmt *fmt;
++	struct bcm2835_codec_fmt_list *fmts =
++					get_format_list(ctx->dev, capture);
++
++	if (f->index < fmts->num_entries) {
++		/* Format found */
++		fmt = &fmts->list[f->index];
++		f->pixelformat = fmt->fourcc;
++		f->flags = fmt->flags;
++		return 0;
++	}
++
++	/* Format not found */
++	return -EINVAL;
++}
++
++static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
++				   struct v4l2_fmtdesc *f)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	return enum_fmt(f, ctx, true);
++}
++
++static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
++				   struct v4l2_fmtdesc *f)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	return enum_fmt(f, ctx, false);
++}
++
++static int vidioc_g_fmt(struct bcm2835_codec_ctx *ctx, struct v4l2_format *f)
++{
++	struct vb2_queue *vq;
++	struct bcm2835_codec_q_data *q_data;
++
++	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
++	if (!vq)
++		return -EINVAL;
++
++	q_data = get_q_data(ctx, f->type);
++
++	f->fmt.pix_mp.width			= q_data->crop_width;
++	f->fmt.pix_mp.height			= q_data->height;
++	f->fmt.pix_mp.pixelformat		= q_data->fmt->fourcc;
++	f->fmt.pix_mp.field			= V4L2_FIELD_NONE;
++	f->fmt.pix_mp.colorspace		= ctx->colorspace;
++	f->fmt.pix_mp.plane_fmt[0].sizeimage	= q_data->sizeimage;
++	f->fmt.pix_mp.plane_fmt[0].bytesperline	= q_data->bytesperline;
++	f->fmt.pix_mp.num_planes		= 1;
++	f->fmt.pix_mp.ycbcr_enc			= ctx->ycbcr_enc;
++	f->fmt.pix_mp.quantization		= ctx->quant;
++	f->fmt.pix_mp.xfer_func			= ctx->xfer_func;
++
++	memset(f->fmt.pix_mp.plane_fmt[0].reserved, 0,
++	       sizeof(f->fmt.pix_mp.plane_fmt[0].reserved));
++
++	return 0;
++}
++
++static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	return vidioc_g_fmt(file2ctx(file), f);
++}
++
++static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	return vidioc_g_fmt(file2ctx(file), f);
++}
++
++static int vidioc_try_fmt(struct bcm2835_codec_ctx *ctx, struct v4l2_format *f,
++			  struct bcm2835_codec_fmt *fmt)
++{
++	/*
++	 * The V4L2 specification requires the driver to correct the format
++	 * struct if any of the dimensions is unsupported
++	 */
++	if (f->fmt.pix_mp.width > MAX_W)
++		f->fmt.pix_mp.width = MAX_W;
++	if (f->fmt.pix_mp.height > MAX_H)
++		f->fmt.pix_mp.height = MAX_H;
++
++	if (!(fmt->flags & V4L2_FMT_FLAG_COMPRESSED)) {
++		/* Only clip min w/h on capture. Treat 0x0 as unknown. */
++		if (f->fmt.pix_mp.width < MIN_W)
++			f->fmt.pix_mp.width = MIN_W;
++		if (f->fmt.pix_mp.height < MIN_H)
++			f->fmt.pix_mp.height = MIN_H;
++
++		/*
++		 * For decoders the buffer must have a vertical alignment of 16
++		 * lines.
++		 * The selection will reflect any cropping rectangle when only
++		 * some of the pixels are active.
++		 */
++		if (ctx->dev->role == DECODE)
++			f->fmt.pix_mp.height = ALIGN(f->fmt.pix_mp.height, 16);
++	}
++	f->fmt.pix_mp.num_planes = 1;
++	f->fmt.pix_mp.plane_fmt[0].bytesperline =
++		get_bytesperline(f->fmt.pix_mp.width, fmt);
++	f->fmt.pix_mp.plane_fmt[0].sizeimage =
++		get_sizeimage(f->fmt.pix_mp.plane_fmt[0].bytesperline,
++			      f->fmt.pix_mp.width, f->fmt.pix_mp.height, fmt);
++	memset(f->fmt.pix_mp.plane_fmt[0].reserved, 0,
++	       sizeof(f->fmt.pix_mp.plane_fmt[0].reserved));
++
++	f->fmt.pix_mp.field = V4L2_FIELD_NONE;
++
++	return 0;
++}
++
++static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	struct bcm2835_codec_fmt *fmt;
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	fmt = find_format(f, ctx->dev, true);
++	if (!fmt) {
++		f->fmt.pix_mp.pixelformat = get_default_format(ctx->dev,
++							       true)->fourcc;
++		fmt = find_format(f, ctx->dev, true);
++	}
++
++	return vidioc_try_fmt(ctx, f, fmt);
++}
++
++static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	struct bcm2835_codec_fmt *fmt;
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	fmt = find_format(f, ctx->dev, false);
++	if (!fmt) {
++		f->fmt.pix_mp.pixelformat = get_default_format(ctx->dev,
++							       false)->fourcc;
++		fmt = find_format(f, ctx->dev, false);
++	}
++
++	if (!f->fmt.pix_mp.colorspace)
++		f->fmt.pix_mp.colorspace = ctx->colorspace;
++
++	return vidioc_try_fmt(ctx, f, fmt);
++}
++
++static int vidioc_s_fmt(struct bcm2835_codec_ctx *ctx, struct v4l2_format *f,
++			unsigned int requested_height)
++{
++	struct bcm2835_codec_q_data *q_data;
++	struct vb2_queue *vq;
++	struct vchiq_mmal_port *port;
++	bool update_capture_port = false;
++	int ret;
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Setting format for type %d, wxh: %dx%d, fmt: %08x, size %u\n",
++		 f->type, f->fmt.pix_mp.width, f->fmt.pix_mp.height,
++		 f->fmt.pix_mp.pixelformat,
++		 f->fmt.pix_mp.plane_fmt[0].sizeimage);
++
++	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
++	if (!vq)
++		return -EINVAL;
++
++	q_data = get_q_data(ctx, f->type);
++	if (!q_data)
++		return -EINVAL;
++
++	if (vb2_is_busy(vq)) {
++		v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
++		return -EBUSY;
++	}
++
++	q_data->fmt = find_format(f, ctx->dev,
++				  f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
++	q_data->crop_width = f->fmt.pix_mp.width;
++	q_data->height = f->fmt.pix_mp.height;
++	if (!q_data->selection_set)
++		q_data->crop_height = requested_height;
++
++	/*
++	 * Copying the behaviour of vicodec which retains a single set of
++	 * colorspace parameters for both input and output.
++	 */
++	ctx->colorspace = f->fmt.pix_mp.colorspace;
++	ctx->xfer_func = f->fmt.pix_mp.xfer_func;
++	ctx->ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
++	ctx->quant = f->fmt.pix_mp.quantization;
++
++	/* All parameters should have been set correctly by try_fmt */
++	q_data->bytesperline = f->fmt.pix_mp.plane_fmt[0].bytesperline;
++	q_data->sizeimage = f->fmt.pix_mp.plane_fmt[0].sizeimage;
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Calulated bpl as %u, size %u\n",
++		 q_data->bytesperline, q_data->sizeimage);
++
++	if (ctx->dev->role == DECODE &&
++	    q_data->fmt->flags & V4L2_FMT_FLAG_COMPRESSED &&
++	    q_data->crop_width && q_data->height) {
++		/*
++		 * On the decoder, if provided with a resolution on the input
++		 * side, then replicate that to the output side.
++		 * GStreamer appears not to support V4L2_EVENT_SOURCE_CHANGE,
++		 * nor set up a resolution on the output side, therefore
++		 * we can't decode anything at a resolution other than the
++		 * default one.
++		 */
++		struct bcm2835_codec_q_data *q_data_dst =
++						&ctx->q_data[V4L2_M2M_DST];
++
++		q_data_dst->crop_width = q_data->crop_width;
++		q_data_dst->crop_height = q_data->crop_height;
++		q_data_dst->height = ALIGN(q_data->crop_height, 16);
++
++		q_data_dst->bytesperline =
++			get_bytesperline(f->fmt.pix_mp.width, q_data_dst->fmt);
++		q_data_dst->sizeimage = get_sizeimage(q_data_dst->bytesperline,
++						      q_data_dst->crop_width,
++						      q_data_dst->height,
++						      q_data_dst->fmt);
++		update_capture_port = true;
++	}
++
++	/* If we have a component then setup the port as well */
++	port = get_port_data(ctx, vq->type);
++	if (!port)
++		return 0;
++
++	setup_mmal_port_format(ctx, q_data, port);
++	ret = vchiq_mmal_port_set_format(ctx->dev->instance, port);
++	if (ret) {
++		v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed vchiq_mmal_port_set_format on port, ret %d\n",
++			 __func__, ret);
++		ret = -EINVAL;
++	}
++
++	if (q_data->sizeimage < port->minimum_buffer.size) {
++		v4l2_err(&ctx->dev->v4l2_dev, "%s: Current buffer size of %u < min buf size %u - driver mismatch to MMAL\n",
++			 __func__, q_data->sizeimage,
++			 port->minimum_buffer.size);
++	}
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Set format for type %d, wxh: %dx%d, fmt: %08x, size %u\n",
++		 f->type, q_data->crop_width, q_data->height,
++		 q_data->fmt->fourcc, q_data->sizeimage);
++
++	if (update_capture_port) {
++		struct vchiq_mmal_port *port_dst = &ctx->component->output[0];
++		struct bcm2835_codec_q_data *q_data_dst =
++						&ctx->q_data[V4L2_M2M_DST];
++
++		setup_mmal_port_format(ctx, q_data_dst, port_dst);
++		ret = vchiq_mmal_port_set_format(ctx->dev->instance, port_dst);
++		if (ret) {
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed vchiq_mmal_port_set_format on output port, ret %d\n",
++				 __func__, ret);
++			ret = -EINVAL;
++		}
++	}
++	return ret;
++}
++
++static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	unsigned int height = f->fmt.pix_mp.height;
++	int ret;
++
++	ret = vidioc_try_fmt_vid_cap(file, priv, f);
++	if (ret)
++		return ret;
++
++	return vidioc_s_fmt(file2ctx(file), f, height);
++}
++
++static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
++				struct v4l2_format *f)
++{
++	unsigned int height = f->fmt.pix_mp.height;
++	int ret;
++
++	ret = vidioc_try_fmt_vid_out(file, priv, f);
++	if (ret)
++		return ret;
++
++	ret = vidioc_s_fmt(file2ctx(file), f, height);
++	return ret;
++}
++
++static int vidioc_g_selection(struct file *file, void *priv,
++			      struct v4l2_selection *s)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++	struct bcm2835_codec_q_data *q_data;
++
++	/*
++	 * The selection API takes V4L2_BUF_TYPE_VIDEO_CAPTURE and
++	 * V4L2_BUF_TYPE_VIDEO_OUTPUT, even if the device implements the MPLANE
++	 * API. The V4L2 core will have converted the MPLANE variants to
++	 * non-MPLANE.
++	 * Open code this instead of using get_q_data in this case.
++	 */
++	switch (s->type) {
++	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
++		/* CAPTURE on encoder is not valid. */
++		if (ctx->dev->role == ENCODE)
++			return -EINVAL;
++		q_data = &ctx->q_data[V4L2_M2M_DST];
++		break;
++	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
++		/* OUTPUT on deoder is not valid. */
++		if (ctx->dev->role == DECODE)
++			return -EINVAL;
++		q_data = &ctx->q_data[V4L2_M2M_SRC];
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	switch (ctx->dev->role) {
++	case DECODE:
++		switch (s->target) {
++		case V4L2_SEL_TGT_COMPOSE_DEFAULT:
++		case V4L2_SEL_TGT_COMPOSE:
++			s->r.left = 0;
++			s->r.top = 0;
++			s->r.width = q_data->crop_width;
++			s->r.height = q_data->crop_height;
++			break;
++		case V4L2_SEL_TGT_COMPOSE_BOUNDS:
++			s->r.left = 0;
++			s->r.top = 0;
++			s->r.width = q_data->crop_width;
++			s->r.height = q_data->crop_height;
++			break;
++		default:
++			return -EINVAL;
++		}
++		break;
++	case ENCODE:
++		switch (s->target) {
++		case V4L2_SEL_TGT_CROP_DEFAULT:
++		case V4L2_SEL_TGT_CROP_BOUNDS:
++			s->r.top = 0;
++			s->r.left = 0;
++			s->r.width = q_data->bytesperline;
++			s->r.height = q_data->height;
++			break;
++		case V4L2_SEL_TGT_CROP:
++			s->r.top = 0;
++			s->r.left = 0;
++			s->r.width = q_data->crop_width;
++			s->r.height = q_data->crop_height;
++			break;
++		default:
++			return -EINVAL;
++		}
++		break;
++	case ISP:
++		break;
++	}
++
++	return 0;
++}
++
++static int vidioc_s_selection(struct file *file, void *priv,
++			      struct v4l2_selection *s)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++	struct bcm2835_codec_q_data *q_data = NULL;
++
++	/*
++	 * The selection API takes V4L2_BUF_TYPE_VIDEO_CAPTURE and
++	 * V4L2_BUF_TYPE_VIDEO_OUTPUT, even if the device implements the MPLANE
++	 * API. The V4L2 core will have converted the MPLANE variants to
++	 * non-MPLANE.
++	 *
++	 * Open code this instead of using get_q_data in this case.
++	 */
++	switch (s->type) {
++	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
++		/* CAPTURE on encoder is not valid. */
++		if (ctx->dev->role == ENCODE)
++			return -EINVAL;
++		q_data = &ctx->q_data[V4L2_M2M_DST];
++		break;
++	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
++		/* OUTPUT on deoder is not valid. */
++		if (ctx->dev->role == DECODE)
++			return -EINVAL;
++		q_data = &ctx->q_data[V4L2_M2M_SRC];
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: ctx %p, type %d, q_data %p, target %d, rect x/y %d/%d, w/h %ux%u\n",
++		 __func__, ctx, s->type, q_data, s->target, s->r.left, s->r.top,
++		 s->r.width, s->r.height);
++
++	switch (ctx->dev->role) {
++	case DECODE:
++		switch (s->target) {
++		case V4L2_SEL_TGT_COMPOSE:
++			/* Accept cropped image */
++			s->r.left = 0;
++			s->r.top = 0;
++			s->r.width = min(s->r.width, q_data->crop_width);
++			s->r.height = min(s->r.height, q_data->height);
++			q_data->crop_width = s->r.width;
++			q_data->crop_height = s->r.height;
++			q_data->selection_set = true;
++			break;
++		default:
++			return -EINVAL;
++		}
++		break;
++	case ENCODE:
++		switch (s->target) {
++		case V4L2_SEL_TGT_CROP:
++			/* Only support crop from (0,0) */
++			s->r.top = 0;
++			s->r.left = 0;
++			s->r.width = min(s->r.width, q_data->crop_width);
++			s->r.height = min(s->r.height, q_data->crop_height);
++			q_data->crop_width = s->r.width;
++			q_data->crop_height = s->r.height;
++			q_data->selection_set = true;
++			break;
++		default:
++			return -EINVAL;
++		}
++		break;
++	case ISP:
++		break;
++	}
++
++	return 0;
++}
++
++static int vidioc_s_parm(struct file *file, void *priv,
++			 struct v4l2_streamparm *parm)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
++		return -EINVAL;
++
++	if (!parm->parm.output.timeperframe.denominator ||
++	    !parm->parm.output.timeperframe.numerator)
++		return -EINVAL;
++
++	ctx->framerate_num =
++			parm->parm.output.timeperframe.denominator;
++	ctx->framerate_denom =
++			parm->parm.output.timeperframe.numerator;
++
++	parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
++
++	return 0;
++}
++
++static int vidioc_g_parm(struct file *file, void *priv,
++			 struct v4l2_streamparm *parm)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
++		return -EINVAL;
++
++	parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
++	parm->parm.output.timeperframe.denominator =
++			ctx->framerate_num;
++	parm->parm.output.timeperframe.numerator =
++			ctx->framerate_denom;
++
++	return 0;
++}
++
++static int vidioc_subscribe_evt(struct v4l2_fh *fh,
++				const struct v4l2_event_subscription *sub)
++{
++	switch (sub->type) {
++	case V4L2_EVENT_EOS:
++		return v4l2_event_subscribe(fh, sub, 2, NULL);
++	case V4L2_EVENT_SOURCE_CHANGE:
++		return v4l2_src_change_event_subscribe(fh, sub);
++	default:
++		return v4l2_ctrl_subscribe_event(fh, sub);
++	}
++}
++
++static int bcm2835_codec_set_level_profile(struct bcm2835_codec_ctx *ctx,
++					   struct v4l2_ctrl *ctrl)
++{
++	struct mmal_parameter_video_profile param;
++	int param_size = sizeof(param);
++	int ret;
++
++	/*
++	 * Level and Profile are set via the same MMAL parameter.
++	 * Retrieve the current settings and amend the one that has changed.
++	 */
++	ret = vchiq_mmal_port_parameter_get(ctx->dev->instance,
++					    &ctx->component->output[0],
++					    MMAL_PARAMETER_PROFILE,
++					    &param,
++					    &param_size);
++	if (ret)
++		return ret;
++
++	switch (ctrl->id) {
++	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
++		switch (ctrl->val) {
++		case V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE:
++			param.profile = MMAL_VIDEO_PROFILE_H264_BASELINE;
++			break;
++		case V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE:
++			param.profile =
++				MMAL_VIDEO_PROFILE_H264_CONSTRAINED_BASELINE;
++			break;
++		case V4L2_MPEG_VIDEO_H264_PROFILE_MAIN:
++			param.profile = MMAL_VIDEO_PROFILE_H264_MAIN;
++			break;
++		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH:
++			param.profile = MMAL_VIDEO_PROFILE_H264_HIGH;
++			break;
++		default:
++			/* Should never get here */
++			break;
++		}
++		break;
++
++	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
++		switch (ctrl->val) {
++		case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
++			param.level = MMAL_VIDEO_LEVEL_H264_1;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_1B:
++			param.level = MMAL_VIDEO_LEVEL_H264_1b;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
++			param.level = MMAL_VIDEO_LEVEL_H264_11;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
++			param.level = MMAL_VIDEO_LEVEL_H264_12;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
++			param.level = MMAL_VIDEO_LEVEL_H264_13;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
++			param.level = MMAL_VIDEO_LEVEL_H264_2;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
++			param.level = MMAL_VIDEO_LEVEL_H264_21;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
++			param.level = MMAL_VIDEO_LEVEL_H264_22;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
++			param.level = MMAL_VIDEO_LEVEL_H264_3;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
++			param.level = MMAL_VIDEO_LEVEL_H264_31;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
++			param.level = MMAL_VIDEO_LEVEL_H264_32;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
++			param.level = MMAL_VIDEO_LEVEL_H264_4;
++			break;
++		default:
++			/* Should never get here */
++			break;
++		}
++	}
++	ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++					    &ctx->component->output[0],
++					    MMAL_PARAMETER_PROFILE,
++					    &param,
++					    param_size);
++
++	return ret;
++}
++
++static int bcm2835_codec_s_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct bcm2835_codec_ctx *ctx =
++		container_of(ctrl->handler, struct bcm2835_codec_ctx, hdl);
++	int ret = 0;
++
++	switch (ctrl->id) {
++	case V4L2_CID_MPEG_VIDEO_BITRATE:
++		ctx->bitrate = ctrl->val;
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_VIDEO_BIT_RATE,
++						    &ctrl->val,
++						    sizeof(ctrl->val));
++		break;
++
++	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
++		u32 bitrate_mode;
++
++		if (!ctx->component)
++			break;
++
++		switch (ctrl->val) {
++		default:
++		case V4L2_MPEG_VIDEO_BITRATE_MODE_VBR:
++			bitrate_mode = MMAL_VIDEO_RATECONTROL_VARIABLE;
++			break;
++		case V4L2_MPEG_VIDEO_BITRATE_MODE_CBR:
++			bitrate_mode = MMAL_VIDEO_RATECONTROL_CONSTANT;
++			break;
++		}
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_RATECONTROL,
++						    &bitrate_mode,
++						    sizeof(bitrate_mode));
++		break;
++	}
++	case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER,
++						    &ctrl->val,
++						    sizeof(ctrl->val));
++		break;
++
++	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
++						    &ctrl->val,
++						    sizeof(ctrl->val));
++		break;
++
++	case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD:
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_INTRAPERIOD,
++						    &ctrl->val,
++						    sizeof(ctrl->val));
++		break;
++
++	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
++	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
++		if (!ctx->component)
++			break;
++
++		ret = bcm2835_codec_set_level_profile(ctx, ctrl);
++		break;
++
++	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: {
++		u32 mmal_bool = 1;
++
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_VIDEO_REQUEST_I_FRAME,
++						    &mmal_bool,
++						    sizeof(mmal_bool));
++		break;
++	}
++
++	default:
++		v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
++		return -EINVAL;
++	}
++
++	if (ret)
++		v4l2_err(&ctx->dev->v4l2_dev, "Failed setting ctrl %08x, ret %d\n",
++			 ctrl->id, ret);
++	return ret ? -EINVAL : 0;
++}
++
++static const struct v4l2_ctrl_ops bcm2835_codec_ctrl_ops = {
++	.s_ctrl = bcm2835_codec_s_ctrl,
++};
++
++static int vidioc_try_decoder_cmd(struct file *file, void *priv,
++				  struct v4l2_decoder_cmd *cmd)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	if (ctx->dev->role != DECODE)
++		return -EINVAL;
++
++	switch (cmd->cmd) {
++	case V4L2_DEC_CMD_STOP:
++		if (cmd->flags & V4L2_DEC_CMD_STOP_TO_BLACK) {
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: DEC cmd->flags=%u stop to black not supported",
++				 __func__, cmd->flags);
++			return -EINVAL;
++		}
++		break;
++	case V4L2_DEC_CMD_START:
++		break;
++	default:
++		return -EINVAL;
++	}
++	return 0;
++}
++
++static int vidioc_decoder_cmd(struct file *file, void *priv,
++			      struct v4l2_decoder_cmd *cmd)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++	struct bcm2835_codec_q_data *q_data = &ctx->q_data[V4L2_M2M_SRC];
++	struct vb2_queue *dst_vq;
++	int ret;
++
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s, cmd %u", __func__,
++		 cmd->cmd);
++	ret = vidioc_try_decoder_cmd(file, priv, cmd);
++	if (ret)
++		return ret;
++
++	switch (cmd->cmd) {
++	case V4L2_DEC_CMD_STOP:
++		if (q_data->eos_buffer_in_use)
++			v4l2_err(&ctx->dev->v4l2_dev, "EOS buffers already in use\n");
++		q_data->eos_buffer_in_use = true;
++
++		q_data->eos_buffer.mmal.buffer_size = 0;
++		q_data->eos_buffer.mmal.length = 0;
++		q_data->eos_buffer.mmal.mmal_flags =
++						MMAL_BUFFER_HEADER_FLAG_EOS;
++		q_data->eos_buffer.mmal.pts = 0;
++		q_data->eos_buffer.mmal.dts = 0;
++
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_submit_buffer(ctx->dev->instance,
++					       &ctx->component->input[0],
++					       &q_data->eos_buffer.mmal);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev,
++				 "%s: EOS buffer submit failed %d\n",
++				 __func__, ret);
++
++		break;
++
++	case V4L2_DEC_CMD_START:
++		dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
++					 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
++		vb2_clear_last_buffer_dequeued(dst_vq);
++		break;
++
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int vidioc_try_encoder_cmd(struct file *file, void *priv,
++				  struct v4l2_encoder_cmd *cmd)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	if (ctx->dev->role != ENCODE)
++		return -EINVAL;
++
++	switch (cmd->cmd) {
++	case V4L2_ENC_CMD_STOP:
++		break;
++
++	case V4L2_ENC_CMD_START:
++		/* Do we need to do anything here? */
++		break;
++	default:
++		return -EINVAL;
++	}
++	return 0;
++}
++
++static int vidioc_encoder_cmd(struct file *file, void *priv,
++			      struct v4l2_encoder_cmd *cmd)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++	struct bcm2835_codec_q_data *q_data = &ctx->q_data[V4L2_M2M_SRC];
++	int ret;
++
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s, cmd %u", __func__,
++		 cmd->cmd);
++	ret = vidioc_try_encoder_cmd(file, priv, cmd);
++	if (ret)
++		return ret;
++
++	switch (cmd->cmd) {
++	case V4L2_ENC_CMD_STOP:
++		if (q_data->eos_buffer_in_use)
++			v4l2_err(&ctx->dev->v4l2_dev, "EOS buffers already in use\n");
++		q_data->eos_buffer_in_use = true;
++
++		q_data->eos_buffer.mmal.buffer_size = 0;
++		q_data->eos_buffer.mmal.length = 0;
++		q_data->eos_buffer.mmal.mmal_flags =
++						MMAL_BUFFER_HEADER_FLAG_EOS;
++		q_data->eos_buffer.mmal.pts = 0;
++		q_data->eos_buffer.mmal.dts = 0;
++
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_submit_buffer(ctx->dev->instance,
++					       &ctx->component->input[0],
++					       &q_data->eos_buffer.mmal);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev,
++				 "%s: EOS buffer submit failed %d\n",
++				 __func__, ret);
++
++		break;
++	case V4L2_ENC_CMD_START:
++		/* Do we need to do anything here? */
++		break;
++
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int vidioc_enum_framesizes(struct file *file, void *fh,
++				  struct v4l2_frmsizeenum *fsize)
++{
++	struct bcm2835_codec_fmt *fmt;
++
++	fmt = find_format_pix_fmt(fsize->pixel_format, file2ctx(file)->dev,
++				  true);
++	if (!fmt)
++		fmt = find_format_pix_fmt(fsize->pixel_format,
++					  file2ctx(file)->dev,
++					  false);
++
++	if (!fmt)
++		return -EINVAL;
++
++	if (fsize->index)
++		return -EINVAL;
++
++	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
++
++	fsize->stepwise.min_width = MIN_W;
++	fsize->stepwise.max_width = MAX_W;
++	fsize->stepwise.step_width = 1;
++	fsize->stepwise.min_height = MIN_H;
++	fsize->stepwise.max_height = MAX_H;
++	fsize->stepwise.step_height = 1;
++
++	return 0;
++}
++
++static const struct v4l2_ioctl_ops bcm2835_codec_ioctl_ops = {
++	.vidioc_querycap	= vidioc_querycap,
++
++	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
++	.vidioc_g_fmt_vid_cap_mplane	= vidioc_g_fmt_vid_cap,
++	.vidioc_try_fmt_vid_cap_mplane	= vidioc_try_fmt_vid_cap,
++	.vidioc_s_fmt_vid_cap_mplane	= vidioc_s_fmt_vid_cap,
++
++	.vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
++	.vidioc_g_fmt_vid_out_mplane	= vidioc_g_fmt_vid_out,
++	.vidioc_try_fmt_vid_out_mplane	= vidioc_try_fmt_vid_out,
++	.vidioc_s_fmt_vid_out_mplane	= vidioc_s_fmt_vid_out,
++
++	.vidioc_reqbufs		= v4l2_m2m_ioctl_reqbufs,
++	.vidioc_querybuf	= v4l2_m2m_ioctl_querybuf,
++	.vidioc_qbuf		= v4l2_m2m_ioctl_qbuf,
++	.vidioc_dqbuf		= v4l2_m2m_ioctl_dqbuf,
++	.vidioc_prepare_buf	= v4l2_m2m_ioctl_prepare_buf,
++	.vidioc_create_bufs	= v4l2_m2m_ioctl_create_bufs,
++	.vidioc_expbuf		= v4l2_m2m_ioctl_expbuf,
++
++	.vidioc_streamon	= v4l2_m2m_ioctl_streamon,
++	.vidioc_streamoff	= v4l2_m2m_ioctl_streamoff,
++
++	.vidioc_g_selection	= vidioc_g_selection,
++	.vidioc_s_selection	= vidioc_s_selection,
++
++	.vidioc_g_parm		= vidioc_g_parm,
++	.vidioc_s_parm		= vidioc_s_parm,
++
++	.vidioc_subscribe_event = vidioc_subscribe_evt,
++	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
++
++	.vidioc_decoder_cmd = vidioc_decoder_cmd,
++	.vidioc_try_decoder_cmd = vidioc_try_decoder_cmd,
++	.vidioc_encoder_cmd = vidioc_encoder_cmd,
++	.vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
++	.vidioc_enum_framesizes = vidioc_enum_framesizes,
++};
++
++static int bcm2835_codec_set_ctrls(struct bcm2835_codec_ctx *ctx)
++{
++	/*
++	 * Query the control handler for the value of the various controls and
++	 * set them.
++	 */
++	const u32 control_ids[] = {
++		V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
++		V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER,
++		V4L2_CID_MPEG_VIDEO_HEADER_MODE,
++		V4L2_CID_MPEG_VIDEO_H264_I_PERIOD,
++		V4L2_CID_MPEG_VIDEO_H264_LEVEL,
++		V4L2_CID_MPEG_VIDEO_H264_PROFILE,
++	};
++	int i;
++
++	for (i = 0; i < ARRAY_SIZE(control_ids); i++) {
++		struct v4l2_ctrl *ctrl;
++
++		ctrl = v4l2_ctrl_find(&ctx->hdl, control_ids[i]);
++		if (ctrl)
++			bcm2835_codec_s_ctrl(ctrl);
++	}
++
++	return 0;
++}
++
++static int bcm2835_codec_create_component(struct bcm2835_codec_ctx *ctx)
++{
++	struct bcm2835_codec_dev *dev = ctx->dev;
++	unsigned int enable = 1;
++	int ret;
++
++	ret = vchiq_mmal_component_init(dev->instance, components[dev->role],
++					&ctx->component);
++	if (ret < 0) {
++		v4l2_err(&dev->v4l2_dev, "%s: failed to create component %s\n",
++			 __func__, components[dev->role]);
++		return -ENOMEM;
++	}
++
++	vchiq_mmal_port_parameter_set(dev->instance, &ctx->component->input[0],
++				      MMAL_PARAMETER_ZERO_COPY, &enable,
++				      sizeof(enable));
++	vchiq_mmal_port_parameter_set(dev->instance, &ctx->component->output[0],
++				      MMAL_PARAMETER_ZERO_COPY, &enable,
++				      sizeof(enable));
++
++	if (dev->role == DECODE) {
++		/*
++		 * Disable firmware option that ensures decoded timestamps
++		 * always increase.
++		 */
++		enable = 0;
++		vchiq_mmal_port_parameter_set(dev->instance,
++					      &ctx->component->output[0],
++					      MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
++					      &enable,
++					      sizeof(enable));
++	}
++
++	setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_SRC],
++			       &ctx->component->input[0]);
++
++	setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_DST],
++			       &ctx->component->output[0]);
++
++	ret = vchiq_mmal_port_set_format(dev->instance,
++					 &ctx->component->input[0]);
++	if (ret < 0) {
++		v4l2_dbg(1, debug, &dev->v4l2_dev,
++			 "%s: vchiq_mmal_port_set_format ip port failed\n",
++			 __func__);
++		goto destroy_component;
++	}
++
++	ret = vchiq_mmal_port_set_format(dev->instance,
++					 &ctx->component->output[0]);
++	if (ret < 0) {
++		v4l2_dbg(1, debug, &dev->v4l2_dev,
++			 "%s: vchiq_mmal_port_set_format op port failed\n",
++			 __func__);
++		goto destroy_component;
++	}
++
++	if (dev->role == ENCODE) {
++		u32 param = 1;
++
++		if (ctx->q_data[V4L2_M2M_SRC].sizeimage <
++			ctx->component->output[0].minimum_buffer.size)
++			v4l2_err(&dev->v4l2_dev, "buffer size mismatch sizeimage %u < min size %u\n",
++				 ctx->q_data[V4L2_M2M_SRC].sizeimage,
++				 ctx->component->output[0].minimum_buffer.size);
++
++		/* Now we have a component we can set all the ctrls */
++		bcm2835_codec_set_ctrls(ctx);
++
++		/* Enable SPS Timing header so framerate information is encoded
++		 * in the H264 header.
++		 */
++		vchiq_mmal_port_parameter_set(ctx->dev->instance,
++					      &ctx->component->output[0],
++					      MMAL_PARAMETER_VIDEO_ENCODE_SPS_TIMING,
++					      &param, sizeof(param));
++
++		/* Enable inserting headers into the first frame */
++		vchiq_mmal_port_parameter_set(ctx->dev->instance,
++					      &ctx->component->control,
++					      MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
++					      &param, sizeof(param));
++		/*
++		 * Avoid fragmenting the buffers over multiple frames (unless
++		 * the frame is bigger than the whole buffer)
++		 */
++		vchiq_mmal_port_parameter_set(ctx->dev->instance,
++					      &ctx->component->control,
++					      MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
++					      &param, sizeof(param));
++	} else {
++		if (ctx->q_data[V4L2_M2M_DST].sizeimage <
++			ctx->component->output[0].minimum_buffer.size)
++			v4l2_err(&dev->v4l2_dev, "buffer size mismatch sizeimage %u < min size %u\n",
++				 ctx->q_data[V4L2_M2M_DST].sizeimage,
++				 ctx->component->output[0].minimum_buffer.size);
++	}
++	v4l2_dbg(2, debug, &dev->v4l2_dev, "%s: component created as %s\n",
++		 __func__, components[dev->role]);
++
++	return 0;
++
++destroy_component:
++	vchiq_mmal_component_finalise(ctx->dev->instance, ctx->component);
++	ctx->component = NULL;
++
++	return ret;
++}
++
++/*
++ * Queue operations
++ */
++
++static int bcm2835_codec_queue_setup(struct vb2_queue *vq,
++				     unsigned int *nbuffers,
++				     unsigned int *nplanes,
++				     unsigned int sizes[],
++				     struct device *alloc_devs[])
++{
++	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(vq);
++	struct bcm2835_codec_q_data *q_data;
++	struct vchiq_mmal_port *port;
++	unsigned int size;
++
++	q_data = get_q_data(ctx, vq->type);
++	if (!q_data)
++		return -EINVAL;
++
++	if (!ctx->component)
++		if (bcm2835_codec_create_component(ctx))
++			return -EINVAL;
++
++	port = get_port_data(ctx, vq->type);
++
++	size = q_data->sizeimage;
++
++	if (*nplanes)
++		return sizes[0] < size ? -EINVAL : 0;
++
++	*nplanes = 1;
++
++	sizes[0] = size;
++	port->current_buffer.size = size;
++
++	if (*nbuffers < port->minimum_buffer.num)
++		*nbuffers = port->minimum_buffer.num;
++	/* Add one buffer to take an EOS */
++	port->current_buffer.num = *nbuffers + 1;
++
++	return 0;
++}
++
++static int bcm2835_codec_mmal_buf_cleanup(struct mmal_buffer *mmal_buf)
++{
++	mmal_vchi_buffer_cleanup(mmal_buf);
++
++	if (mmal_buf->dma_buf) {
++		dma_buf_put(mmal_buf->dma_buf);
++		mmal_buf->dma_buf = NULL;
++	}
++
++	return 0;
++}
++
++static int bcm2835_codec_buf_init(struct vb2_buffer *vb)
++{
++	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
++	struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
++	struct v4l2_m2m_buffer *m2m = container_of(vb2, struct v4l2_m2m_buffer,
++						   vb);
++	struct m2m_mmal_buffer *buf = container_of(m2m, struct m2m_mmal_buffer,
++						   m2m);
++
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: ctx:%p, vb %p\n",
++		 __func__, ctx, vb);
++	buf->mmal.buffer = vb2_plane_vaddr(&buf->m2m.vb.vb2_buf, 0);
++	buf->mmal.buffer_size = vb2_plane_size(&buf->m2m.vb.vb2_buf, 0);
++
++	mmal_vchi_buffer_init(ctx->dev->instance, &buf->mmal);
++
++	return 0;
++}
++
++static int bcm2835_codec_buf_prepare(struct vb2_buffer *vb)
++{
++	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
++	struct bcm2835_codec_q_data *q_data;
++	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
++	struct v4l2_m2m_buffer *m2m = container_of(vbuf, struct v4l2_m2m_buffer,
++						   vb);
++	struct m2m_mmal_buffer *buf = container_of(m2m, struct m2m_mmal_buffer,
++						   m2m);
++	struct dma_buf *dma_buf;
++	int ret;
++
++	v4l2_dbg(4, debug, &ctx->dev->v4l2_dev, "%s: type: %d ptr %p\n",
++		 __func__, vb->vb2_queue->type, vb);
++
++	q_data = get_q_data(ctx, vb->vb2_queue->type);
++	if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
++		if (vbuf->field == V4L2_FIELD_ANY)
++			vbuf->field = V4L2_FIELD_NONE;
++		if (vbuf->field != V4L2_FIELD_NONE) {
++			v4l2_err(&ctx->dev->v4l2_dev, "%s field isn't supported\n",
++				 __func__);
++			return -EINVAL;
++		}
++	}
++
++	if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
++		v4l2_err(&ctx->dev->v4l2_dev, "%s data will not fit into plane (%lu < %lu)\n",
++			 __func__, vb2_plane_size(vb, 0),
++			 (long)q_data->sizeimage);
++		return -EINVAL;
++	}
++
++	if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type))
++		vb2_set_plane_payload(vb, 0, q_data->sizeimage);
++
++	switch (vb->memory) {
++	case VB2_MEMORY_DMABUF:
++		dma_buf = dma_buf_get(vb->planes[0].m.fd);
++
++		if (dma_buf != buf->mmal.dma_buf) {
++			/* dmabuf either hasn't already been mapped, or it has
++			 * changed.
++			 */
++			if (buf->mmal.dma_buf) {
++				v4l2_err(&ctx->dev->v4l2_dev,
++					 "%s Buffer changed - why did the core not call cleanup?\n",
++					 __func__);
++				bcm2835_codec_mmal_buf_cleanup(&buf->mmal);
++			}
++
++			buf->mmal.dma_buf = dma_buf;
++		} else {
++			/* We already have a reference count on the dmabuf, so
++			 * release the one we acquired above.
++			 */
++			dma_buf_put(dma_buf);
++		}
++		ret = 0;
++		break;
++	case VB2_MEMORY_MMAP:
++		/*
++		 * We want to do this at init, but vb2_core_expbuf checks that
++		 * the index < q->num_buffers, and q->num_buffers only gets
++		 * updated once all the buffers are allocated.
++		 */
++		if (!buf->mmal.dma_buf) {
++			ret = vb2_core_expbuf_dmabuf(vb->vb2_queue,
++						     vb->vb2_queue->type,
++						     vb->index, 0,
++						     O_CLOEXEC,
++						     &buf->mmal.dma_buf);
++			if (ret)
++				v4l2_err(&ctx->dev->v4l2_dev,
++					 "%s: Failed to expbuf idx %d, ret %d\n",
++					 __func__, vb->index, ret);
++		} else {
++			ret = 0;
++		}
++		break;
++	default:
++		ret = -EINVAL;
++		break;
++	}
++
++	return ret;
++}
++
++static void bcm2835_codec_buf_queue(struct vb2_buffer *vb)
++{
++	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
++	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
++
++	v4l2_dbg(4, debug, &ctx->dev->v4l2_dev, "%s: type: %d ptr %p vbuf->flags %u, seq %u, bytesused %u\n",
++		 __func__, vb->vb2_queue->type, vb, vbuf->flags, vbuf->sequence,
++		 vb->planes[0].bytesused);
++	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
++}
++
++static void bcm2835_codec_buffer_cleanup(struct vb2_buffer *vb)
++{
++	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
++	struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
++	struct v4l2_m2m_buffer *m2m = container_of(vb2, struct v4l2_m2m_buffer,
++						   vb);
++	struct m2m_mmal_buffer *buf = container_of(m2m, struct m2m_mmal_buffer,
++						   m2m);
++
++	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: ctx:%p, vb %p\n",
++		 __func__, ctx, vb);
++
++	bcm2835_codec_mmal_buf_cleanup(&buf->mmal);
++}
++
++static int bcm2835_codec_start_streaming(struct vb2_queue *q,
++					 unsigned int count)
++{
++	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(q);
++	struct bcm2835_codec_dev *dev = ctx->dev;
++	struct bcm2835_codec_q_data *q_data = get_q_data(ctx, q->type);
++	struct vchiq_mmal_port *port = get_port_data(ctx, q->type);
++	int ret;
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: type: %d count %d\n",
++		 __func__, q->type, count);
++	q_data->sequence = 0;
++
++	if (!ctx->component_enabled) {
++		ret = vchiq_mmal_component_enable(dev->instance,
++						  ctx->component);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling component, ret %d\n",
++				 __func__, ret);
++		ctx->component_enabled = true;
++	}
++
++	if (count < port->minimum_buffer.num)
++		count = port->minimum_buffer.num;
++
++	if (port->current_buffer.num < count + 1) {
++		v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: ctx:%p, buffer count changed %u to %u\n",
++			 __func__, ctx, port->current_buffer.num, count + 1);
++
++		port->current_buffer.num = count + 1;
++		ret = vchiq_mmal_port_set_format(dev->instance, port);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Error updating buffer count, ret %d\n",
++				 __func__, ret);
++	}
++
++	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
++		/*
++		 * Create the EOS buffer.
++		 * We only need the MMAL part, and want to NOT attach a memory
++		 * buffer to it as it should only take flags.
++		 */
++		memset(&q_data->eos_buffer, 0, sizeof(q_data->eos_buffer));
++		mmal_vchi_buffer_init(dev->instance,
++				      &q_data->eos_buffer.mmal);
++		q_data->eos_buffer_in_use = false;
++
++		port->cb_ctx = ctx;
++		ret = vchiq_mmal_port_enable(dev->instance,
++					     port,
++					     ip_buffer_cb);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling i/p port, ret %d\n",
++				 __func__, ret);
++	} else {
++		port->cb_ctx = ctx;
++		ret = vchiq_mmal_port_enable(dev->instance,
++					     port,
++					     op_buffer_cb);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling o/p port, ret %d\n",
++				 __func__, ret);
++	}
++	return ret;
++}
++
++static void bcm2835_codec_stop_streaming(struct vb2_queue *q)
++{
++	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(q);
++	struct bcm2835_codec_dev *dev = ctx->dev;
++	struct bcm2835_codec_q_data *q_data = get_q_data(ctx, q->type);
++	struct vchiq_mmal_port *port = get_port_data(ctx, q->type);
++	struct vb2_v4l2_buffer *vbuf;
++	int ret;
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: type: %d - return buffers\n",
++		 __func__, q->type);
++
++	init_completion(&ctx->frame_cmplt);
++
++	/* Clear out all buffers held by m2m framework */
++	for (;;) {
++		if (V4L2_TYPE_IS_OUTPUT(q->type))
++			vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
++		else
++			vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
++		if (!vbuf)
++			break;
++		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: return buffer %p\n",
++			 __func__, vbuf);
++
++		v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
++	}
++
++	/* Disable MMAL port - this will flush buffers back */
++	ret = vchiq_mmal_port_disable(dev->instance, port);
++	if (ret)
++		v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed disabling %s port, ret %d\n",
++			 __func__, V4L2_TYPE_IS_OUTPUT(q->type) ? "i/p" : "o/p",
++			 ret);
++
++	while (atomic_read(&port->buffers_with_vpu)) {
++		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Waiting for buffers to be returned - %d outstanding\n",
++			 __func__, atomic_read(&port->buffers_with_vpu));
++		ret = wait_for_completion_timeout(&ctx->frame_cmplt,
++						  COMPLETE_TIMEOUT);
++		if (ret <= 0) {
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Timeout waiting for buffers to be returned - %d outstanding\n",
++				 __func__,
++				 atomic_read(&port->buffers_with_vpu));
++			break;
++		}
++	}
++
++	/* If both ports disabled, then disable the component */
++	if (ctx->component_enabled &&
++	    !ctx->component->input[0].enabled &&
++	    !ctx->component->output[0].enabled) {
++		ret = vchiq_mmal_component_disable(dev->instance,
++						   ctx->component);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling component, ret %d\n",
++				 __func__, ret);
++		ctx->component_enabled = false;
++	}
++
++	if (V4L2_TYPE_IS_OUTPUT(q->type))
++		mmal_vchi_buffer_cleanup(&q_data->eos_buffer.mmal);
++
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: done\n", __func__);
++}
++
++static const struct vb2_ops bcm2835_codec_qops = {
++	.queue_setup	 = bcm2835_codec_queue_setup,
++	.buf_init	 = bcm2835_codec_buf_init,
++	.buf_prepare	 = bcm2835_codec_buf_prepare,
++	.buf_queue	 = bcm2835_codec_buf_queue,
++	.buf_cleanup	 = bcm2835_codec_buffer_cleanup,
++	.start_streaming = bcm2835_codec_start_streaming,
++	.stop_streaming  = bcm2835_codec_stop_streaming,
++	.wait_prepare	 = vb2_ops_wait_prepare,
++	.wait_finish	 = vb2_ops_wait_finish,
++};
++
++static int queue_init(void *priv, struct vb2_queue *src_vq,
++		      struct vb2_queue *dst_vq)
++{
++	struct bcm2835_codec_ctx *ctx = priv;
++	int ret;
++
++	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
++	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
++	src_vq->drv_priv = ctx;
++	src_vq->buf_struct_size = sizeof(struct m2m_mmal_buffer);
++	src_vq->ops = &bcm2835_codec_qops;
++	src_vq->mem_ops = &vb2_dma_contig_memops;
++	src_vq->dev = &ctx->dev->pdev->dev;
++	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
++	src_vq->lock = &ctx->dev->dev_mutex;
++
++	ret = vb2_queue_init(src_vq);
++	if (ret)
++		return ret;
++
++	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
++	dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
++	dst_vq->drv_priv = ctx;
++	dst_vq->buf_struct_size = sizeof(struct m2m_mmal_buffer);
++	dst_vq->ops = &bcm2835_codec_qops;
++	dst_vq->mem_ops = &vb2_dma_contig_memops;
++	dst_vq->dev = &ctx->dev->pdev->dev;
++	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
++	dst_vq->lock = &ctx->dev->dev_mutex;
++
++	return vb2_queue_init(dst_vq);
++}
++
++/*
++ * File operations
++ */
++static int bcm2835_codec_open(struct file *file)
++{
++	struct bcm2835_codec_dev *dev = video_drvdata(file);
++	struct bcm2835_codec_ctx *ctx = NULL;
++	struct v4l2_ctrl_handler *hdl;
++	int rc = 0;
++
++	if (mutex_lock_interruptible(&dev->dev_mutex)) {
++		v4l2_err(&dev->v4l2_dev, "Mutex fail\n");
++		return -ERESTARTSYS;
++	}
++	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
++	if (!ctx) {
++		rc = -ENOMEM;
++		goto open_unlock;
++	}
++
++	ctx->q_data[V4L2_M2M_SRC].fmt = get_default_format(dev, false);
++	ctx->q_data[V4L2_M2M_DST].fmt = get_default_format(dev, true);
++
++	ctx->q_data[V4L2_M2M_SRC].crop_width = DEFAULT_WIDTH;
++	ctx->q_data[V4L2_M2M_SRC].crop_height = DEFAULT_HEIGHT;
++	ctx->q_data[V4L2_M2M_SRC].height = DEFAULT_HEIGHT;
++	ctx->q_data[V4L2_M2M_SRC].bytesperline =
++			get_bytesperline(DEFAULT_WIDTH,
++					 ctx->q_data[V4L2_M2M_SRC].fmt);
++	ctx->q_data[V4L2_M2M_SRC].sizeimage =
++		get_sizeimage(ctx->q_data[V4L2_M2M_SRC].bytesperline,
++			      ctx->q_data[V4L2_M2M_SRC].crop_width,
++			      ctx->q_data[V4L2_M2M_SRC].height,
++			      ctx->q_data[V4L2_M2M_SRC].fmt);
++
++	ctx->q_data[V4L2_M2M_DST].crop_width = DEFAULT_WIDTH;
++	ctx->q_data[V4L2_M2M_DST].crop_height = DEFAULT_HEIGHT;
++	ctx->q_data[V4L2_M2M_DST].height = DEFAULT_HEIGHT;
++	ctx->q_data[V4L2_M2M_DST].bytesperline =
++			get_bytesperline(DEFAULT_WIDTH,
++					 ctx->q_data[V4L2_M2M_DST].fmt);
++	ctx->q_data[V4L2_M2M_DST].sizeimage =
++		get_sizeimage(ctx->q_data[V4L2_M2M_DST].bytesperline,
++			      ctx->q_data[V4L2_M2M_DST].crop_width,
++			      ctx->q_data[V4L2_M2M_DST].height,
++			      ctx->q_data[V4L2_M2M_DST].fmt);
++
++	ctx->colorspace = V4L2_COLORSPACE_REC709;
++	ctx->bitrate = 10 * 1000 * 1000;
++
++	ctx->framerate_num = 30;
++	ctx->framerate_denom = 1;
++
++	/* Initialise V4L2 contexts */
++	v4l2_fh_init(&ctx->fh, video_devdata(file));
++	file->private_data = &ctx->fh;
++	ctx->dev = dev;
++	hdl = &ctx->hdl;
++	if (dev->role == ENCODE) {
++		/* Encode controls */
++		v4l2_ctrl_handler_init(hdl, 9);
++
++		v4l2_ctrl_new_std_menu(hdl, &bcm2835_codec_ctrl_ops,
++				       V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
++				       V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
++				       V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_MPEG_VIDEO_BITRATE,
++				  25 * 1000, 25 * 1000 * 1000,
++				  25 * 1000, 10 * 1000 * 1000);
++		v4l2_ctrl_new_std_menu(hdl, &bcm2835_codec_ctrl_ops,
++				       V4L2_CID_MPEG_VIDEO_HEADER_MODE,
++				       V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
++				       0, V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER,
++				  0, 1,
++				  1, 0);
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_MPEG_VIDEO_H264_I_PERIOD,
++				  0, 0x7FFFFFFF,
++				  1, 60);
++		v4l2_ctrl_new_std_menu(hdl, &bcm2835_codec_ctrl_ops,
++				       V4L2_CID_MPEG_VIDEO_H264_LEVEL,
++				       V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
++				       ~(BIT(V4L2_MPEG_VIDEO_H264_LEVEL_1_0) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_1B) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_1_1) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_1_2) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_1_3) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_2_1) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_2_2) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_4_0) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_4_1) |
++					 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_4_2)),
++				       V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
++		v4l2_ctrl_new_std_menu(hdl, &bcm2835_codec_ctrl_ops,
++				       V4L2_CID_MPEG_VIDEO_H264_PROFILE,
++				       V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
++				       ~(BIT(V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE) |
++					 BIT(V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE) |
++					 BIT(V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
++					 BIT(V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
++					V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME,
++				  0, 0, 0, 0);
++		if (hdl->error) {
++			rc = hdl->error;
++			goto free_ctrl_handler;
++		}
++		ctx->fh.ctrl_handler = hdl;
++		v4l2_ctrl_handler_setup(hdl);
++	} else if (dev->role == DECODE) {
++		v4l2_ctrl_handler_init(hdl, 1);
++
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
++				  1, 1, 1, 1);
++		if (hdl->error) {
++			rc = hdl->error;
++			goto free_ctrl_handler;
++		}
++		ctx->fh.ctrl_handler = hdl;
++		v4l2_ctrl_handler_setup(hdl);
++	}
++
++	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
++
++	if (IS_ERR(ctx->fh.m2m_ctx)) {
++		rc = PTR_ERR(ctx->fh.m2m_ctx);
++
++		goto free_ctrl_handler;
++	}
++
++	/* Set both queues as buffered as we have buffering in the VPU. That
++	 * means that we will be scheduled whenever either an input or output
++	 * buffer is available (otherwise one of each are required).
++	 */
++	v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
++	v4l2_m2m_set_dst_buffered(ctx->fh.m2m_ctx, true);
++
++	v4l2_fh_add(&ctx->fh);
++	atomic_inc(&dev->num_inst);
++
++	mutex_unlock(&dev->dev_mutex);
++	return 0;
++
++free_ctrl_handler:
++	v4l2_ctrl_handler_free(hdl);
++	kfree(ctx);
++open_unlock:
++	mutex_unlock(&dev->dev_mutex);
++	return rc;
++}
++
++static int bcm2835_codec_release(struct file *file)
++{
++	struct bcm2835_codec_dev *dev = video_drvdata(file);
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: Releasing instance %p\n",
++		 __func__, ctx);
++
++	v4l2_fh_del(&ctx->fh);
++	v4l2_fh_exit(&ctx->fh);
++	v4l2_ctrl_handler_free(&ctx->hdl);
++	mutex_lock(&dev->dev_mutex);
++	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
++
++	if (ctx->component)
++		vchiq_mmal_component_finalise(dev->instance, ctx->component);
++
++	mutex_unlock(&dev->dev_mutex);
++	kfree(ctx);
++
++	atomic_dec(&dev->num_inst);
++
++	return 0;
++}
++
++static const struct v4l2_file_operations bcm2835_codec_fops = {
++	.owner		= THIS_MODULE,
++	.open		= bcm2835_codec_open,
++	.release	= bcm2835_codec_release,
++	.poll		= v4l2_m2m_fop_poll,
++	.unlocked_ioctl	= video_ioctl2,
++	.mmap		= v4l2_m2m_fop_mmap,
++};
++
++static const struct video_device bcm2835_codec_videodev = {
++	.name		= MEM2MEM_NAME,
++	.vfl_dir	= VFL_DIR_M2M,
++	.fops		= &bcm2835_codec_fops,
++	.ioctl_ops	= &bcm2835_codec_ioctl_ops,
++	.minor		= -1,
++	.release	= video_device_release_empty,
++};
++
++static const struct v4l2_m2m_ops m2m_ops = {
++	.device_run	= device_run,
++	.job_ready	= job_ready,
++	.job_abort	= job_abort,
++};
++
++/* Size of the array to provide to the VPU when asking for the list of supported
++ * formats.
++ * The ISP component currently advertises 44 input formats, so add a small
++ * overhead on that.
++ */
++#define MAX_SUPPORTED_ENCODINGS 50
++
++/* Populate dev->supported_fmts with the formats supported by those ports. */
++static int bcm2835_codec_get_supported_fmts(struct bcm2835_codec_dev *dev)
++{
++	struct bcm2835_codec_fmt *list;
++	struct vchiq_mmal_component *component;
++	u32 fourccs[MAX_SUPPORTED_ENCODINGS];
++	u32 param_size = sizeof(fourccs);
++	unsigned int i, j, num_encodings;
++	int ret;
++
++	ret = vchiq_mmal_component_init(dev->instance, components[dev->role],
++					&component);
++	if (ret < 0) {
++		v4l2_err(&dev->v4l2_dev, "%s: failed to create component %s\n",
++			 __func__, components[dev->role]);
++		return -ENOMEM;
++	}
++
++	ret = vchiq_mmal_port_parameter_get(dev->instance,
++					    &component->input[0],
++					    MMAL_PARAMETER_SUPPORTED_ENCODINGS,
++					    &fourccs,
++					    &param_size);
++
++	if (ret) {
++		if (ret == MMAL_MSG_STATUS_ENOSPC) {
++			v4l2_err(&dev->v4l2_dev, "%s: port has more encoding than we provided space for. Some are dropped.\n",
++				 __func__);
++			num_encodings = MAX_SUPPORTED_ENCODINGS;
++		} else {
++			v4l2_err(&dev->v4l2_dev, "%s: get_param ret %u.\n",
++				 __func__, ret);
++			ret = -EINVAL;
++			goto destroy_component;
++		}
++	} else {
++		num_encodings = param_size / sizeof(u32);
++	}
++
++	/* Assume at this stage that all encodings will be supported in V4L2.
++	 * Any that aren't supported will waste a very small amount of memory.
++	 */
++	list = devm_kzalloc(&dev->pdev->dev,
++			    sizeof(struct bcm2835_codec_fmt) * num_encodings,
++			    GFP_KERNEL);
++	if (!list) {
++		ret = -ENOMEM;
++		goto destroy_component;
++	}
++	dev->supported_fmts[0].list = list;
++
++	for (i = 0, j = 0; i < num_encodings; i++) {
++		const struct bcm2835_codec_fmt *fmt = get_fmt(fourccs[i]);
++
++		if (fmt) {
++			list[j] = *fmt;
++			j++;
++		}
++	}
++	dev->supported_fmts[0].num_entries = j;
++
++	param_size = sizeof(fourccs);
++	ret = vchiq_mmal_port_parameter_get(dev->instance,
++					    &component->output[0],
++					    MMAL_PARAMETER_SUPPORTED_ENCODINGS,
++					    &fourccs,
++					    &param_size);
++
++	if (ret) {
++		if (ret == MMAL_MSG_STATUS_ENOSPC) {
++			v4l2_err(&dev->v4l2_dev, "%s: port has more encoding than we provided space for. Some are dropped.\n",
++				 __func__);
++			num_encodings = MAX_SUPPORTED_ENCODINGS;
++		} else {
++			ret = -EINVAL;
++			goto destroy_component;
++		}
++	} else {
++		num_encodings = param_size / sizeof(u32);
++	}
++	/* Assume at this stage that all encodings will be supported in V4L2. */
++	list = devm_kzalloc(&dev->pdev->dev,
++			    sizeof(struct bcm2835_codec_fmt) * num_encodings,
++			    GFP_KERNEL);
++	if (!list) {
++		ret = -ENOMEM;
++		goto destroy_component;
++	}
++	dev->supported_fmts[1].list = list;
++
++	for (i = 0, j = 0; i < num_encodings; i++) {
++		const struct bcm2835_codec_fmt *fmt = get_fmt(fourccs[i]);
++
++		if (fmt) {
++			list[j] = *fmt;
++			j++;
++		}
++	}
++	dev->supported_fmts[1].num_entries = j;
++
++	ret = 0;
++
++destroy_component:
++	vchiq_mmal_component_finalise(dev->instance, component);
++
++	return ret;
++}
++
++static int bcm2835_codec_create(struct bcm2835_codec_driver *drv,
++				struct bcm2835_codec_dev **new_dev,
++				enum bcm2835_codec_role role)
++{
++	struct platform_device *pdev = drv->pdev;
++	struct bcm2835_codec_dev *dev;
++	struct video_device *vfd;
++	int function;
++	int video_nr;
++	int ret;
++
++	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
++	if (!dev)
++		return -ENOMEM;
++
++	dev->pdev = pdev;
++
++	dev->role = role;
++
++	ret = vchiq_mmal_init(&dev->instance);
++	if (ret)
++		return ret;
++
++	ret = bcm2835_codec_get_supported_fmts(dev);
++	if (ret)
++		goto vchiq_finalise;
++
++	atomic_set(&dev->num_inst, 0);
++	mutex_init(&dev->dev_mutex);
++
++	/* Initialise the video device */
++	dev->vfd = bcm2835_codec_videodev;
++
++	vfd = &dev->vfd;
++	vfd->lock = &dev->dev_mutex;
++	vfd->v4l2_dev = &dev->v4l2_dev;
++	vfd->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
++	vfd->v4l2_dev->mdev = &drv->mdev;
++
++	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
++	if (ret)
++		goto vchiq_finalise;
++
++	switch (role) {
++	case DECODE:
++		v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
++		v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
++		function = MEDIA_ENT_F_PROC_VIDEO_DECODER;
++		video_nr = decode_video_nr;
++		break;
++	case ENCODE:
++		v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
++		function = MEDIA_ENT_F_PROC_VIDEO_ENCODER;
++		video_nr = encode_video_nr;
++		break;
++	case ISP:
++		v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
++		v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
++		function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
++		video_nr = isp_video_nr;
++		break;
++	default:
++		ret = -EINVAL;
++		goto unreg_dev;
++	}
++
++	ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
++		goto unreg_dev;
++	}
++
++	video_set_drvdata(vfd, dev);
++	snprintf(vfd->name, sizeof(vfd->name), "%s-%s",
++		 bcm2835_codec_videodev.name, roles[role]);
++	v4l2_info(&dev->v4l2_dev, "Device registered as /dev/video%d\n",
++		  vfd->num);
++
++	*new_dev = dev;
++
++	dev->m2m_dev = v4l2_m2m_init(&m2m_ops);
++	if (IS_ERR(dev->m2m_dev)) {
++		v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
++		ret = PTR_ERR(dev->m2m_dev);
++		goto err_m2m;
++	}
++
++	ret = v4l2_m2m_register_media_controller(dev->m2m_dev, vfd, function);
++	if (ret)
++		goto err_m2m;
++
++	v4l2_info(&dev->v4l2_dev, "Loaded V4L2 %s\n",
++		  roles[role]);
++	return 0;
++
++err_m2m:
++	v4l2_m2m_release(dev->m2m_dev);
++	video_unregister_device(&dev->vfd);
++unreg_dev:
++	v4l2_device_unregister(&dev->v4l2_dev);
++vchiq_finalise:
++	vchiq_mmal_finalise(dev->instance);
++	return ret;
++}
++
++static int bcm2835_codec_destroy(struct bcm2835_codec_dev *dev)
++{
++	if (!dev)
++		return -ENODEV;
++
++	v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME ", %s\n",
++		  roles[dev->role]);
++	v4l2_m2m_unregister_media_controller(dev->m2m_dev);
++	v4l2_m2m_release(dev->m2m_dev);
++	video_unregister_device(&dev->vfd);
++	v4l2_device_unregister(&dev->v4l2_dev);
++	vchiq_mmal_finalise(dev->instance);
++
++	return 0;
++}
++
++static int bcm2835_codec_probe(struct platform_device *pdev)
++{
++	struct bcm2835_codec_driver *drv;
++	struct media_device *mdev;
++	int ret = 0;
++
++	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
++	if (!drv)
++		return -ENOMEM;
++
++	drv->pdev = pdev;
++	mdev = &drv->mdev;
++	mdev->dev = &pdev->dev;
++
++	strscpy(mdev->model, bcm2835_codec_videodev.name, sizeof(mdev->model));
++	strscpy(mdev->serial, "0000", sizeof(mdev->serial));
++	snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
++		 pdev->name);
++
++	/* This should return the vgencmd version information or such .. */
++	mdev->hw_revision = 1;
++	media_device_init(mdev);
++
++	ret = bcm2835_codec_create(drv, &drv->decode, DECODE);
++	if (ret)
++		goto out;
++
++	ret = bcm2835_codec_create(drv, &drv->encode, ENCODE);
++	if (ret)
++		goto out;
++
++	ret = bcm2835_codec_create(drv, &drv->isp, ISP);
++	if (ret)
++		goto out;
++
++	/* Register the media device node */
++	if (media_device_register(mdev) < 0)
++		goto out;
++
++	platform_set_drvdata(pdev, drv);
++
++	return 0;
++
++out:
++	if (drv->isp) {
++		bcm2835_codec_destroy(drv->isp);
++		drv->isp = NULL;
++	}
++	if (drv->encode) {
++		bcm2835_codec_destroy(drv->encode);
++		drv->encode = NULL;
++	}
++	if (drv->decode) {
++		bcm2835_codec_destroy(drv->decode);
++		drv->decode = NULL;
++	}
++	return ret;
++}
++
++static int bcm2835_codec_remove(struct platform_device *pdev)
++{
++	struct bcm2835_codec_driver *drv = platform_get_drvdata(pdev);
++
++	media_device_unregister(&drv->mdev);
++
++	bcm2835_codec_destroy(drv->isp);
++
++	bcm2835_codec_destroy(drv->encode);
++
++	bcm2835_codec_destroy(drv->decode);
++
++	media_device_cleanup(&drv->mdev);
++
++	return 0;
++}
++
++static struct platform_driver bcm2835_v4l2_codec_driver = {
++	.probe = bcm2835_codec_probe,
++	.remove = bcm2835_codec_remove,
++	.driver = {
++		   .name = "bcm2835-codec",
++		   .owner = THIS_MODULE,
++		   },
++};
++
++module_platform_driver(bcm2835_v4l2_codec_driver);
++
++MODULE_DESCRIPTION("BCM2835 codec V4L2 driver");
++MODULE_AUTHOR("Dave Stevenson, <dave.stevenson@raspberrypi.com>");
++MODULE_LICENSE("GPL");
++MODULE_VERSION("0.0.1");
++MODULE_ALIAS("platform:bcm2835-codec");
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -618,6 +618,9 @@ enum mmal_parameter_video_type {
+ 
+ 	/**< Take a @ref MMAL_PARAMETER_BOOLEAN_T */
+ 	MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
++
++	/**< Take a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
+ };
+ 
+ /** Valid mirror modes */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0301-bcm2835-dma-only-reserve-channel-0-if-legacy-dma-dri.patch b/target/linux/bcm27xx/patches-5.15/950-0301-bcm2835-dma-only-reserve-channel-0-if-legacy-dma-dri.patch
new file mode 100644
index 0000000000..d21dacb43c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0301-bcm2835-dma-only-reserve-channel-0-if-legacy-dma-dri.patch
@@ -0,0 +1,32 @@
+From 89036f62b573bc2df30e7b865da65454213f6720 Mon Sep 17 00:00:00 2001
+From: Matthias Reichl <hias@horus.com>
+Date: Sun, 11 Oct 2020 00:48:55 +0200
+Subject: [PATCH] bcm2835-dma: only reserve channel 0 if legacy dma
+ driver is enabled
+
+If CONFIG_DMA_BCM2708 isn't enabled there's no need to mask out
+one of the already scarce DMA channels.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ drivers/dma/bcm2835-dma.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -1283,6 +1283,7 @@ static int bcm2835_dma_probe(struct plat
+ 		goto err_no_dma;
+ 	}
+ 
++#ifdef CONFIG_DMA_BCM2708
+ 	/* One channel is reserved for the legacy API */
+ 	if (chans_available & BCM2835_DMA_BULK_MASK) {
+ 		rc = bcm_dmaman_probe(pdev, base,
+@@ -1293,6 +1294,7 @@ static int bcm2835_dma_probe(struct plat
+ 
+ 		chans_available &= ~BCM2835_DMA_BULK_MASK;
+ 	}
++#endif
+ 
+ 	/* And possibly one for the 40-bit DMA memcpy API */
+ 	if (chans_available & od->cfg_data->chan_40bit_mask &
diff --git a/target/linux/bcm27xx/patches-5.15/950-0302-uapi-bcm2835-isp-Add-bcm2835-isp-uapi-header-file.patch b/target/linux/bcm27xx/patches-5.15/950-0302-uapi-bcm2835-isp-Add-bcm2835-isp-uapi-header-file.patch
new file mode 100644
index 0000000000..ccb2fcd85f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0302-uapi-bcm2835-isp-Add-bcm2835-isp-uapi-header-file.patch
@@ -0,0 +1,338 @@
+From 93606862a8674875fd61166bfef56d2f3dd22b48 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 12 Oct 2020 17:03:14 +0100
+Subject: [PATCH] uapi: bcm2835-isp: Add bcm2835-isp uapi header file
+
+This file defines the userland interface to the bcm2835-isp driver
+that will follow in a separate commit.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ include/uapi/linux/bcm2835-isp.h | 320 +++++++++++++++++++++++++++++++
+ 1 file changed, 320 insertions(+)
+ create mode 100644 include/uapi/linux/bcm2835-isp.h
+
+--- /dev/null
++++ b/include/uapi/linux/bcm2835-isp.h
+@@ -0,0 +1,320 @@
++/* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) */
++/*
++ * bcm2835-isp.h
++ *
++ * BCM2835 ISP driver - user space header file.
++ *
++ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
++ *
++ * Author: Naushir Patuck (naush@raspberrypi.com)
++ *
++ */
++
++#ifndef __BCM2835_ISP_H_
++#define __BCM2835_ISP_H_
++
++#include <linux/v4l2-controls.h>
++
++#define V4L2_CID_USER_BCM2835_ISP_CC_MATRIX	\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0001)
++#define V4L2_CID_USER_BCM2835_ISP_LENS_SHADING	\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0002)
++#define V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL	\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0003)
++#define V4L2_CID_USER_BCM2835_ISP_GEQ		\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0004)
++#define V4L2_CID_USER_BCM2835_ISP_GAMMA		\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0005)
++#define V4L2_CID_USER_BCM2835_ISP_DENOISE	\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0006)
++#define V4L2_CID_USER_BCM2835_ISP_SHARPEN	\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0007)
++#define V4L2_CID_USER_BCM2835_ISP_DPC		\
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0008)
++
++/*
++ * All structs below are directly mapped onto the equivalent structs in
++ * drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++ * for convenience.
++ */
++
++/**
++ * struct bcm2835_isp_rational - Rational value type.
++ *
++ * @num:	Numerator.
++ * @den:	Denominator.
++ */
++struct bcm2835_isp_rational {
++	__s32 num;
++	__u32 den;
++};
++
++/**
++ * struct bcm2835_isp_ccm - Colour correction matrix.
++ *
++ * @ccm:	3x3 correction matrix coefficients.
++ * @offsets:	1x3 correction offsets.
++ */
++struct bcm2835_isp_ccm {
++	struct bcm2835_isp_rational ccm[3][3];
++	__s32 offsets[3];
++};
++
++/**
++ * struct bcm2835_isp_custom_ccm - Custom CCM applied with the
++ *				   V4L2_CID_USER_BCM2835_ISP_CC_MATRIX ctrl.
++ *
++ * @enabled:	Enable custom CCM.
++ * @ccm:	Custom CCM coefficients and offsets.
++ */
++struct bcm2835_isp_custom_ccm {
++	__u32 enabled;
++	struct bcm2835_isp_ccm ccm;
++};
++
++/**
++ * enum bcm2835_isp_gain_format - format of the gains in the lens shading
++ *				  tables used with the
++ *				  V4L2_CID_USER_BCM2835_ISP_LENS_SHADING ctrl.
++ *
++ * @GAIN_FORMAT_U0P8_1:		Gains are u0.8 format, starting at 1.0
++ * @GAIN_FORMAT_U1P7_0:		Gains are u1.7 format, starting at 0.0
++ * @GAIN_FORMAT_U1P7_1:		Gains are u1.7 format, starting at 1.0
++ * @GAIN_FORMAT_U2P6_0:		Gains are u2.6 format, starting at 0.0
++ * @GAIN_FORMAT_U2P6_1:		Gains are u2.6 format, starting at 1.0
++ * @GAIN_FORMAT_U3P5_0:		Gains are u3.5 format, starting at 0.0
++ * @GAIN_FORMAT_U3P5_1:		Gains are u3.5 format, starting at 1.0
++ * @GAIN_FORMAT_U4P10:		Gains are u4.10 format, starting at 0.0
++ */
++enum bcm2835_isp_gain_format {
++	GAIN_FORMAT_U0P8_1 = 0,
++	GAIN_FORMAT_U1P7_0 = 1,
++	GAIN_FORMAT_U1P7_1 = 2,
++	GAIN_FORMAT_U2P6_0 = 3,
++	GAIN_FORMAT_U2P6_1 = 4,
++	GAIN_FORMAT_U3P5_0 = 5,
++	GAIN_FORMAT_U3P5_1 = 6,
++	GAIN_FORMAT_U4P10  = 7,
++};
++
++/**
++ * struct bcm2835_isp_lens_shading - Lens shading tables supplied with the
++ *				     V4L2_CID_USER_BCM2835_ISP_LENS_SHADING
++ *				     ctrl.
++ *
++ * @enabled:		Enable lens shading.
++ * @grid_cell_size:	Size of grid cells in samples (16, 32, 64, 128 or 256).
++ * @grid_width:		Width of lens shading tables in grid cells.
++ * @grid_stride:	Row to row distance (in grid cells) between grid cells
++ *			in the same horizontal location.
++ * @grid_height:	Height of lens shading tables in grid cells.
++ * @dmabuf:		dmabuf file handle containing the table.
++ * @ref_transform:	Reference transform - unsupported, please pass zero.
++ * @corner_sampled:	Whether the gains are sampled at the corner points
++ *			of the grid cells or in the cell centres.
++ * @gain_format:	Format of the gains (see enum &bcm2835_isp_gain_format).
++ */
++struct bcm2835_isp_lens_shading {
++	__u32 enabled;
++	__u32 grid_cell_size;
++	__u32 grid_width;
++	__u32 grid_stride;
++	__u32 grid_height;
++	__s32 dmabuf;
++	__u32 ref_transform;
++	__u32 corner_sampled;
++	__u32 gain_format;
++};
++
++/**
++ * struct bcm2835_isp_black_level - Sensor black level set with the
++ *				    V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL ctrl.
++ *
++ * @enabled:		Enable black level.
++ * @black_level_r:	Black level for red channel.
++ * @black_level_g:	Black level for green channels.
++ * @black_level_b:	Black level for blue channel.
++ */
++struct bcm2835_isp_black_level {
++	__u32 enabled;
++	__u16 black_level_r;
++	__u16 black_level_g;
++	__u16 black_level_b;
++	__u8 padding[2]; /* Unused */
++};
++
++/**
++ * struct bcm2835_isp_geq - Green equalisation parameters set with the
++ *			    V4L2_CID_USER_BCM2835_ISP_GEQ ctrl.
++ *
++ * @enabled:	Enable green equalisation.
++ * @offset:	Fixed offset of the green equalisation threshold.
++ * @slope:	Slope of the green equalisation threshold.
++ */
++struct bcm2835_isp_geq {
++	__u32 enabled;
++	__u32 offset;
++	struct bcm2835_isp_rational slope;
++};
++
++#define BCM2835_NUM_GAMMA_PTS 33
++
++/**
++ * struct bcm2835_isp_gamma - Gamma parameters set with the
++ *			      V4L2_CID_USER_BCM2835_ISP_GAMMA ctrl.
++ *
++ * @enabled:	Enable gamma adjustment.
++ * @X:		X values of the points defining the gamma curve.
++ *		Values should be scaled to 16 bits.
++ * @Y:		Y values of the points defining the gamma curve.
++ *		Values should be scaled to 16 bits.
++ */
++struct bcm2835_isp_gamma {
++	__u32 enabled;
++	__u16 x[BCM2835_NUM_GAMMA_PTS];
++	__u16 y[BCM2835_NUM_GAMMA_PTS];
++};
++
++/**
++ * struct bcm2835_isp_denoise - Denoise parameters set with the
++ *				V4L2_CID_USER_BCM2835_ISP_DENOISE ctrl.
++ *
++ * @enabled:	Enable denoise.
++ * @constant:	Fixed offset of the noise threshold.
++ * @slope:	Slope of the noise threshold.
++ * @strength:	Denoise strength between 0.0 (off) and 1.0 (maximum).
++ */
++struct bcm2835_isp_denoise {
++	__u32 enabled;
++	__u32 constant;
++	struct bcm2835_isp_rational slope;
++	struct bcm2835_isp_rational strength;
++};
++
++/**
++ * struct bcm2835_isp_sharpen - Sharpen parameters set with the
++ *				V4L2_CID_USER_BCM2835_ISP_SHARPEN ctrl.
++ *
++ * @enabled:	Enable sharpening.
++ * @threshold:	Threshold at which to start sharpening pixels.
++ * @strength:	Strength with which pixel sharpening increases.
++ * @limit:	Limit to the amount of sharpening applied.
++ */
++struct bcm2835_isp_sharpen {
++	__u32 enabled;
++	struct bcm2835_isp_rational threshold;
++	struct bcm2835_isp_rational strength;
++	struct bcm2835_isp_rational limit;
++};
++
++/**
++ * enum bcm2835_isp_dpc_mode - defective pixel correction (DPC) strength.
++ *
++ * @DPC_MODE_OFF:		No DPC.
++ * @DPC_MODE_NORMAL:		Normal DPC.
++ * @DPC_MODE_STRONG:		Strong DPC.
++ */
++enum bcm2835_isp_dpc_mode {
++	DPC_MODE_OFF = 0,
++	DPC_MODE_NORMAL = 1,
++	DPC_MODE_STRONG = 2,
++};
++
++/**
++ * struct bcm2835_isp_dpc - Defective pixel correction (DPC) parameters set
++ *			    with the V4L2_CID_USER_BCM2835_ISP_DPC ctrl.
++ *
++ * @enabled:	Enable DPC.
++ * @strength:	DPC strength (see enum &bcm2835_isp_dpc_mode).
++ */
++struct bcm2835_isp_dpc {
++	__u32 enabled;
++	__u32 strength;
++};
++
++/*
++ * ISP statistics structures.
++ *
++ * The bcm2835_isp_stats structure is generated at the output of the
++ * statistics node.  Note that this does not directly map onto the statistics
++ * output of the ISP HW.  Instead, the MMAL firmware code maps the HW statistics
++ * to the bcm2835_isp_stats structure.
++ */
++#define DEFAULT_AWB_REGIONS_X 16
++#define DEFAULT_AWB_REGIONS_Y 12
++
++#define NUM_HISTOGRAMS 2
++#define NUM_HISTOGRAM_BINS 128
++#define AWB_REGIONS (DEFAULT_AWB_REGIONS_X * DEFAULT_AWB_REGIONS_Y)
++#define FLOATING_REGIONS 16
++#define AGC_REGIONS 16
++#define FOCUS_REGIONS 12
++
++/**
++ * struct bcm2835_isp_stats_hist - Histogram statistics
++ *
++ * @r_hist:	Red channel histogram.
++ * @g_hist:	Combined green channel histogram.
++ * @b_hist:	Blue channel histogram.
++ */
++struct bcm2835_isp_stats_hist {
++	__u32 r_hist[NUM_HISTOGRAM_BINS];
++	__u32 g_hist[NUM_HISTOGRAM_BINS];
++	__u32 b_hist[NUM_HISTOGRAM_BINS];
++};
++
++/**
++ * struct bcm2835_isp_stats_region - Region sums.
++ *
++ * @counted:	The number of 2x2 bayer tiles accumulated.
++ * @notcounted:	The number of 2x2 bayer tiles not accumulated.
++ * @r_sum:	Total sum of counted pixels in the red channel for a region.
++ * @g_sum:	Total sum of counted pixels in the green channel for a region.
++ * @b_sum:	Total sum of counted pixels in the blue channel for a region.
++ */
++struct bcm2835_isp_stats_region {
++	__u32 counted;
++	__u32 notcounted;
++	__u64 r_sum;
++	__u64 g_sum;
++	__u64 b_sum;
++};
++
++/**
++ * struct bcm2835_isp_stats_focus - Focus statistics.
++ *
++ * @contrast_val:	Focus measure - accumulated output of the focus filter.
++ *			In the first dimension, index [0] counts pixels below a
++ *			preset threshold, and index [1] counts pixels above the
++ *			threshold.  In the second dimension, index [0] uses the
++ *			first predefined filter, and index [1] uses the second
++ *			predefined filter.
++ * @contrast_val_num:	The number of counted pixels in the above accumulation.
++ */
++struct bcm2835_isp_stats_focus {
++	__u64 contrast_val[2][2];
++	__u32 contrast_val_num[2][2];
++};
++
++/**
++ * struct bcm2835_isp_stats - ISP statistics.
++ *
++ * @version:		Version of the bcm2835_isp_stats structure.
++ * @size:		Size of the bcm2835_isp_stats structure.
++ * @hist:		Histogram statistics for the entire image.
++ * @awb_stats:		Statistics for the regions defined for AWB calculations.
++ * @floating_stats:	Statistics for arbitrarily placed (floating) regions.
++ * @agc_stats:		Statistics for the regions defined for AGC calculations.
++ * @focus_stats:	Focus filter statistics for the focus regions.
++ */
++struct bcm2835_isp_stats {
++	__u32 version;
++	__u32 size;
++	struct bcm2835_isp_stats_hist hist[NUM_HISTOGRAMS];
++	struct bcm2835_isp_stats_region awb_stats[AWB_REGIONS];
++	struct bcm2835_isp_stats_region floating_stats[FLOATING_REGIONS];
++	struct bcm2835_isp_stats_region agc_stats[AGC_REGIONS];
++	struct bcm2835_isp_stats_focus focus_stats[FOCUS_REGIONS];
++};
++
++#endif /* __BCM2835_ISP_H_ */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0303-staging-vc04_services-ISP-Add-a-more-complex-ISP-pro.patch b/target/linux/bcm27xx/patches-5.15/950-0303-staging-vc04_services-ISP-Add-a-more-complex-ISP-pro.patch
new file mode 100644
index 0000000000..0e268430ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0303-staging-vc04_services-ISP-Add-a-more-complex-ISP-pro.patch
@@ -0,0 +1,2406 @@
+From 762245b7e1d8e846e4cc314dfad025185f224db1 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 23 Apr 2020 10:17:37 +0100
+Subject: [PATCH] staging: vc04_services: ISP: Add a more complex ISP
+ processing component
+
+Driver for the BCM2835 ISP hardware block.  This driver uses the MMAL
+component to program the ISP hardware through the VC firmware.
+
+The ISP component can produce two video stream outputs, and Bayer
+image statistics. This can't be encompassed in a simple V4L2
+M2M device, so create a new device that registers 4 video nodes.
+
+This patch squashes all the development patches from the earlier
+rpi-5.4.y branch into one
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ MAINTAINERS                                   |    9 +
+ drivers/staging/vc04_services/Kconfig         |    1 +
+ drivers/staging/vc04_services/Makefile        |    1 +
+ .../staging/vc04_services/bcm2835-isp/Kconfig |   14 +
+ .../vc04_services/bcm2835-isp/Makefile        |    8 +
+ .../bcm2835-isp/bcm2835-isp-ctrls.h           |   67 +
+ .../bcm2835-isp/bcm2835-isp-fmts.h            |  353 ++++
+ .../bcm2835-isp/bcm2835-v4l2-isp.c            | 1694 +++++++++++++++++
+ .../vc04_services/vchiq-mmal/mmal-encodings.h |    4 +
+ .../vchiq-mmal/mmal-parameters.h              |  153 +-
+ 10 files changed, 2303 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/staging/vc04_services/bcm2835-isp/Kconfig
+ create mode 100644 drivers/staging/vc04_services/bcm2835-isp/Makefile
+ create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-ctrls.h
+ create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
+ create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3566,6 +3566,15 @@ S:	Maintained
+ F:	drivers/media/platform/bcm2835/
+ F:	Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
+ 
++BROADCOM BCM2835 ISP DRIVER
++M:	Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
++L:	linux-media@vger.kernel.org
++S:	Maintained
++F:	Documentation/media/uapi/v4l/pixfmt-meta-bcm2835-isp-stats.rst
++F:	Documentation/media/v4l-drivers/bcm2835-isp.rst
++F:	drivers/staging/vc04_services/bcm2835-isp
++F:	include/uapi/linux/bcm2835-isp.h
++
+ BROADCOM BCM47XX MIPS ARCHITECTURE
+ M:	Hauke Mehrtens <hauke@hauke-m.de>
+ M:	Rafał Miłecki <zajec5@gmail.com>
+--- a/drivers/staging/vc04_services/Kconfig
++++ b/drivers/staging/vc04_services/Kconfig
+@@ -45,6 +45,7 @@ source "drivers/staging/vc04_services/bc
+ 
+ source "drivers/staging/vc04_services/vc-sm-cma/Kconfig"
+ source "drivers/staging/vc04_services/bcm2835-codec/Kconfig"
++source "drivers/staging/vc04_services/bcm2835-isp/Kconfig"
+ 
+ source "drivers/staging/vc04_services/vchiq-mmal/Kconfig"
+ 
+--- a/drivers/staging/vc04_services/Makefile
++++ b/drivers/staging/vc04_services/Makefile
+@@ -16,6 +16,7 @@ obj-$(CONFIG_VIDEO_BCM2835)		+= bcm2835-
+ obj-$(CONFIG_BCM2835_VCHIQ_MMAL)	+= vchiq-mmal/
+ obj-$(CONFIG_BCM_VC_SM_CMA)		+= vc-sm-cma/
+ obj-$(CONFIG_VIDEO_CODEC_BCM2835)	+= bcm2835-codec/
++obj-$(CONFIG_VIDEO_ISP_BCM2835)		+= bcm2835-isp/
+ 
+ ccflags-y += -I $(srctree)/$(src)/include
+ 
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-isp/Kconfig
+@@ -0,0 +1,14 @@
++config VIDEO_ISP_BCM2835
++	tristate "BCM2835 ISP support"
++	depends on MEDIA_SUPPORT
++	depends on VIDEO_V4L2 && (ARCH_BCM2835 || COMPILE_TEST)
++	depends on MEDIA_CONTROLLER
++	select BCM2835_VCHIQ_MMAL
++	select VIDEOBUF2_DMA_CONTIG
++	help
++	  This is the V4L2 driver for the Broadcom BCM2835 ISP hardware.
++	  This operates over the VCHIQ interface to a service running on
++	  VideoCore.
++
++	  To compile this driver as a module, choose M here: the module
++	  will be called bcm2835-isp.
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-isp/Makefile
+@@ -0,0 +1,8 @@
++# SPDX-License-Identifier: GPL-2.0
++bcm2835-isp-objs := bcm2835-v4l2-isp.o
++
++obj-$(CONFIG_VIDEO_ISP_BCM2835) += bcm2835-isp.o
++
++ccflags-y += \
++	-I$(srctree)/drivers/staging/vc04_services \
++	-D__VCCOREVER__=0x04000000
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-ctrls.h
+@@ -0,0 +1,67 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Broadcom BCM2835 ISP driver
++ *
++ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
++ *
++ * Author: Naushir Patuck (naush@raspberrypi.com)
++ *
++ */
++
++#ifndef BCM2835_ISP_CTRLS
++#define BCM2835_ISP_CTRLS
++
++#include <linux/bcm2835-isp.h>
++
++struct bcm2835_isp_custom_ctrl {
++	const char *name;
++	u32 id;
++	u32 size;
++	u32 flags;
++};
++
++static const struct bcm2835_isp_custom_ctrl custom_ctrls[] = {
++	{
++		.name	= "Colour Correction Matrix",
++		.id	= V4L2_CID_USER_BCM2835_ISP_CC_MATRIX,
++		.size	= sizeof(struct bcm2835_isp_custom_ccm),
++		.flags  = 0
++	}, {
++		.name	= "Lens Shading",
++		.id	= V4L2_CID_USER_BCM2835_ISP_LENS_SHADING,
++		.size	= sizeof(struct bcm2835_isp_lens_shading),
++		.flags  = V4L2_CTRL_FLAG_EXECUTE_ON_WRITE
++	}, {
++		.name	= "Black Level",
++		.id	= V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL,
++		.size	= sizeof(struct bcm2835_isp_black_level),
++		.flags  = 0
++	}, {
++		.name	= "Green Equalisation",
++		.id	= V4L2_CID_USER_BCM2835_ISP_GEQ,
++		.size	= sizeof(struct bcm2835_isp_geq),
++		.flags  = 0
++	}, {
++		.name	= "Gamma",
++		.id	= V4L2_CID_USER_BCM2835_ISP_GAMMA,
++		.size	= sizeof(struct bcm2835_isp_gamma),
++		.flags  = 0
++	}, {
++		.name	= "Sharpen",
++		.id	= V4L2_CID_USER_BCM2835_ISP_SHARPEN,
++		.size	= sizeof(struct bcm2835_isp_sharpen),
++		.flags  = 0
++	}, {
++		.name	= "Denoise",
++		.id	= V4L2_CID_USER_BCM2835_ISP_DENOISE,
++		.size	= sizeof(struct bcm2835_isp_denoise),
++		.flags  = 0
++	}, {
++		.name	= "Defective Pixel Correction",
++		.id	= V4L2_CID_USER_BCM2835_ISP_DPC,
++		.size	= sizeof(struct bcm2835_isp_dpc),
++		.flags  = 0
++	}
++};
++
++#endif
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
+@@ -0,0 +1,353 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Broadcom BCM2835 ISP driver
++ *
++ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
++ *
++ * Author: Naushir Patuck (naush@raspberrypi.com)
++ *
++ */
++
++#ifndef BCM2835_ISP_FMTS
++#define BCM2835_ISP_FMTS
++
++#include <linux/videodev2.h>
++#include "vchiq-mmal/mmal-encodings.h"
++
++struct bcm2835_isp_fmt {
++	u32 fourcc;
++	int depth;
++	int bytesperline_align;
++	u32 mmal_fmt;
++	int size_multiplier_x2;
++	enum v4l2_colorspace colorspace;
++	unsigned int step_size;
++};
++
++static const struct bcm2835_isp_fmt supported_formats[] = {
++	{
++		/* YUV formats */
++		.fourcc		    = V4L2_PIX_FMT_YUV420,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_I420,
++		.size_multiplier_x2 = 3,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_YVU420,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_YV12,
++		.size_multiplier_x2 = 3,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_NV12,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_NV12,
++		.size_multiplier_x2 = 3,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_NV21,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_NV21,
++		.size_multiplier_x2 = 3,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_YUYV,
++		.depth		    = 16,
++		.bytesperline_align = 64,
++		.mmal_fmt	    = MMAL_ENCODING_YUYV,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_UYVY,
++		.depth		    = 16,
++		.bytesperline_align = 64,
++		.mmal_fmt	    = MMAL_ENCODING_UYVY,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_YVYU,
++		.depth		    = 16,
++		.bytesperline_align = 64,
++		.mmal_fmt	    = MMAL_ENCODING_YVYU,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_VYUY,
++		.depth		    = 16,
++		.bytesperline_align = 64,
++		.mmal_fmt	    = MMAL_ENCODING_VYUY,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.step_size	    = 2,
++	}, {
++		/* RGB formats */
++		.fourcc		    = V4L2_PIX_FMT_RGB24,
++		.depth		    = 24,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_RGB24,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.step_size	    = 1,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_RGB565,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_RGB16,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.step_size	    = 1,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_BGR24,
++		.depth		    = 24,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BGR24,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.step_size	    = 1,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_XBGR32,
++		.depth		    = 32,
++		.bytesperline_align = 64,
++		.mmal_fmt	    = MMAL_ENCODING_BGRA,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.step_size	    = 1,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_RGBX32,
++		.depth		    = 32,
++		.bytesperline_align = 64,
++		.mmal_fmt	    = MMAL_ENCODING_RGBA,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.step_size	    = 1,
++	}, {
++		/* Bayer formats */
++		/* 8 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB8,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB8,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR8,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR8,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG8,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG8,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG8,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG8,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 10 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB10P,
++		.depth		    = 10,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB10P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR10P,
++		.depth		    = 10,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR10P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG10P,
++		.depth		    = 10,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG10P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG10P,
++		.depth		    = 10,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG10P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 12 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB12P,
++		.depth		    = 12,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB12P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR12P,
++		.depth		    = 12,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR12P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG12P,
++		.depth		    = 12,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG12P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG12P,
++		.depth		    = 12,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG12P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 14 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB14P,
++		.depth		    = 14,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB14P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR14P,
++		.depth		    = 14,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR14P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG14P,
++		.depth		    = 14,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG14P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG14P,
++		.depth		    = 14,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG14P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 16 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB16,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB16,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR16,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR16,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG16,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG16,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG16,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG16,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* Monochrome MIPI formats */
++		/* 8 bit */
++		.fourcc		    = V4L2_PIX_FMT_GREY,
++		.depth		    = 8,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_GREY,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 10 bit */
++		.fourcc		    = V4L2_PIX_FMT_Y10P,
++		.depth		    = 10,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_Y10P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 12 bit */
++		.fourcc		    = V4L2_PIX_FMT_Y12P,
++		.depth		    = 12,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_Y12P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 14 bit */
++		.fourcc		    = V4L2_PIX_FMT_Y14P,
++		.depth		    = 14,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_Y14P,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 16 bit */
++		.fourcc		    = V4L2_PIX_FMT_Y16,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_Y16,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_META_FMT_BCM2835_ISP_STATS,
++		.mmal_fmt	    = MMAL_ENCODING_BRCM_STATS,
++		/* The rest are not valid fields for stats. */
++	}
++};
++
++#endif
+--- /dev/null
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -0,0 +1,1694 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Broadcom BCM2835 ISP driver
++ *
++ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
++ *
++ * Author: Naushir Patuck (naush@raspberrypi.com)
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-ioctl.h>
++#include <media/videobuf2-dma-contig.h>
++
++#include "vchiq-mmal/mmal-msg.h"
++#include "vchiq-mmal/mmal-parameters.h"
++#include "vchiq-mmal/mmal-vchiq.h"
++
++#include "vc-sm-cma/vc_sm_knl.h"
++
++#include "bcm2835-isp-ctrls.h"
++#include "bcm2835-isp-fmts.h"
++
++static unsigned int debug;
++module_param(debug, uint, 0644);
++MODULE_PARM_DESC(debug, "activates debug info");
++
++static unsigned int video_nr = 13;
++module_param(video_nr, uint, 0644);
++MODULE_PARM_DESC(video_nr, "base video device number");
++
++#define BCM2835_ISP_NAME "bcm2835-isp"
++#define BCM2835_ISP_ENTITY_NAME_LEN 32
++
++#define BCM2835_ISP_NUM_OUTPUTS 1
++#define BCM2835_ISP_NUM_CAPTURES 2
++#define BCM2835_ISP_NUM_METADATA 1
++
++#define BCM2835_ISP_NUM_NODES						\
++		(BCM2835_ISP_NUM_OUTPUTS + BCM2835_ISP_NUM_CAPTURES +	\
++		 BCM2835_ISP_NUM_METADATA)
++
++/* Default frame dimension of 1280 pixels. */
++#define DEFAULT_DIM 1280U
++/*
++ * Maximum frame dimension of 16384 pixels.  Even though the ISP runs in tiles,
++ * have a sensible limit so that we do not create an excessive number of tiles
++ * to process.
++ */
++#define MAX_DIM 16384U
++/*
++ * Minimum frame dimension of 64 pixels.  Anything lower, and the tiling
++ * algorithm may not be able to cope when applying filter context.
++ */
++#define MIN_DIM 64U
++
++/* Timeout for stop_streaming to allow all buffers to return */
++#define COMPLETE_TIMEOUT (2 * HZ)
++
++/* Per-queue, driver-specific private data */
++struct bcm2835_isp_q_data {
++	/*
++	 * These parameters should be treated as gospel, with everything else
++	 * being determined from them.
++	 */
++	unsigned int bytesperline;
++	unsigned int width;
++	unsigned int height;
++	unsigned int sizeimage;
++	const struct bcm2835_isp_fmt *fmt;
++};
++
++/*
++ * Structure to describe a single node /dev/video<N> which represents a single
++ * input or output queue to the ISP device.
++ */
++struct bcm2835_isp_node {
++	int vfl_dir;
++	unsigned int id;
++	const char *name;
++	struct vchiq_mmal_port *port;
++	struct video_device vfd;
++	struct media_pad pad;
++	struct media_intf_devnode *intf_devnode;
++	struct media_link *intf_link;
++	struct mutex lock; /* top level device node lock */
++	struct mutex queue_lock;
++
++	struct vb2_queue queue;
++	unsigned int sequence;
++
++	/* The list of formats supported on the node. */
++	struct bcm2835_isp_fmt const **supported_fmts;
++	unsigned int num_supported_fmts;
++
++	struct bcm2835_isp_q_data q_data;
++
++	/* Parent device structure */
++	struct bcm2835_isp_dev *dev;
++
++	bool registered;
++	bool media_node_registered;
++};
++
++/*
++ * Structure representing the entire ISP device, comprising several input and
++ * output nodes /dev/video<N>.
++ */
++struct bcm2835_isp_dev {
++	struct v4l2_device v4l2_dev;
++	struct device *dev;
++	struct v4l2_ctrl_handler ctrl_handler;
++	struct media_device mdev;
++	struct media_entity entity;
++	bool media_device_registered;
++	bool media_entity_registered;
++	struct vchiq_mmal_instance *mmal_instance;
++	struct vchiq_mmal_component *component;
++	struct completion frame_cmplt;
++
++	struct bcm2835_isp_node node[BCM2835_ISP_NUM_NODES];
++	struct media_pad pad[BCM2835_ISP_NUM_NODES];
++	atomic_t num_streaming;
++
++	/* Image pipeline controls. */
++	int r_gain;
++	int b_gain;
++};
++
++struct bcm2835_isp_buffer {
++	struct vb2_v4l2_buffer vb;
++	struct mmal_buffer mmal;
++};
++
++static
++inline struct bcm2835_isp_dev *node_get_dev(struct bcm2835_isp_node *node)
++{
++	return node->dev;
++}
++
++static inline bool node_is_output(struct bcm2835_isp_node *node)
++{
++	return node->queue.type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
++}
++
++static inline bool node_is_capture(struct bcm2835_isp_node *node)
++{
++	return node->queue.type == V4L2_BUF_TYPE_VIDEO_CAPTURE;
++}
++
++static inline bool node_is_stats(struct bcm2835_isp_node *node)
++{
++	return node->queue.type == V4L2_BUF_TYPE_META_CAPTURE;
++}
++
++static inline enum v4l2_buf_type index_to_queue_type(int index)
++{
++	if (index < BCM2835_ISP_NUM_OUTPUTS)
++		return V4L2_BUF_TYPE_VIDEO_OUTPUT;
++	else if (index < BCM2835_ISP_NUM_OUTPUTS + BCM2835_ISP_NUM_CAPTURES)
++		return V4L2_BUF_TYPE_VIDEO_CAPTURE;
++	else
++		return V4L2_BUF_TYPE_META_CAPTURE;
++}
++
++static int set_isp_param(struct bcm2835_isp_node *node, u32 parameter,
++			 void *value, u32 value_size)
++{
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++
++	return vchiq_mmal_port_parameter_set(dev->mmal_instance, node->port,
++					     parameter, value, value_size);
++}
++
++static int set_wb_gains(struct bcm2835_isp_node *node)
++{
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	struct mmal_parameter_awbgains gains = {
++		.r_gain = { dev->r_gain, 1000 },
++		.b_gain = { dev->b_gain, 1000 }
++	};
++
++	return set_isp_param(node, MMAL_PARAMETER_CUSTOM_AWB_GAINS,
++			     &gains, sizeof(gains));
++}
++
++static int set_digital_gain(struct bcm2835_isp_node *node, uint32_t gain)
++{
++	struct mmal_parameter_rational digital_gain = {
++		.num = gain,
++		.den = 1000
++	};
++
++	return set_isp_param(node, MMAL_PARAMETER_DIGITAL_GAIN,
++			     &digital_gain, sizeof(digital_gain));
++}
++
++static const struct bcm2835_isp_fmt *get_fmt(u32 mmal_fmt)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(supported_formats); i++) {
++		if (supported_formats[i].mmal_fmt == mmal_fmt)
++			return &supported_formats[i];
++	}
++	return NULL;
++}
++
++static const
++struct bcm2835_isp_fmt *find_format_by_fourcc(unsigned int fourcc,
++					      struct bcm2835_isp_node *node)
++{
++	const struct bcm2835_isp_fmt *fmt;
++	unsigned int i;
++
++	for (i = 0; i < node->num_supported_fmts; i++) {
++		fmt = node->supported_fmts[i];
++		if (fmt->fourcc == fourcc)
++			return fmt;
++	}
++
++	return NULL;
++}
++
++static const
++struct bcm2835_isp_fmt *find_format(struct v4l2_format *f,
++				    struct bcm2835_isp_node *node)
++{
++	return find_format_by_fourcc(node_is_stats(node) ?
++				     f->fmt.meta.dataformat :
++				     f->fmt.pix.pixelformat,
++				     node);
++}
++
++/* vb2_to_mmal_buffer() - converts vb2 buffer header to MMAL
++ *
++ * Copies all the required fields from a VB2 buffer to the MMAL buffer header,
++ * ready for sending to the VPU.
++ */
++static void vb2_to_mmal_buffer(struct mmal_buffer *buf,
++			       struct vb2_v4l2_buffer *vb2)
++{
++	u64 pts;
++
++	buf->mmal_flags = 0;
++	if (vb2->flags & V4L2_BUF_FLAG_KEYFRAME)
++		buf->mmal_flags |= MMAL_BUFFER_HEADER_FLAG_KEYFRAME;
++
++	/* Data must be framed correctly as one frame per buffer. */
++	buf->mmal_flags |= MMAL_BUFFER_HEADER_FLAG_FRAME_END;
++
++	buf->length = vb2->vb2_buf.planes[0].bytesused;
++	/*
++	 * Minor ambiguity in the V4L2 spec as to whether passing in a 0 length
++	 * buffer, or one with V4L2_BUF_FLAG_LAST set denotes end of stream.
++	 * Handle either.
++	 */
++	if (!buf->length || vb2->flags & V4L2_BUF_FLAG_LAST)
++		buf->mmal_flags |= MMAL_BUFFER_HEADER_FLAG_EOS;
++
++	/* vb2 timestamps in nsecs, mmal in usecs */
++	pts = vb2->vb2_buf.timestamp;
++	do_div(pts, 1000);
++	buf->pts = pts;
++	buf->dts = MMAL_TIME_UNKNOWN;
++}
++
++static void mmal_buffer_cb(struct vchiq_mmal_instance *instance,
++			   struct vchiq_mmal_port *port, int status,
++			   struct mmal_buffer *mmal_buf)
++{
++	struct bcm2835_isp_buffer *q_buf;
++	struct bcm2835_isp_node *node = port->cb_ctx;
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	struct vb2_v4l2_buffer *vb2;
++
++	q_buf = container_of(mmal_buf, struct bcm2835_isp_buffer, mmal);
++	vb2 = &q_buf->vb;
++	v4l2_dbg(2, debug, &dev->v4l2_dev,
++		 "%s: port:%s[%d], status:%d, buf:%p, dmabuf:%p, length:%lu, flags %u, pts %lld\n",
++		 __func__, node_is_output(node) ? "input" : "output", node->id,
++		 status, mmal_buf, mmal_buf->dma_buf, mmal_buf->length,
++		 mmal_buf->mmal_flags, mmal_buf->pts);
++
++	if (mmal_buf->cmd)
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: Unexpected event on output callback - %08x\n",
++			 __func__, mmal_buf->cmd);
++
++	if (status) {
++		/* error in transfer */
++		if (vb2) {
++			/* there was a buffer with the error so return it */
++			vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_ERROR);
++		}
++		return;
++	}
++
++	/* vb2 timestamps in nsecs, mmal in usecs */
++	vb2->vb2_buf.timestamp = mmal_buf->pts * 1000;
++	vb2->sequence = node->sequence++;
++	vb2_set_plane_payload(&vb2->vb2_buf, 0, mmal_buf->length);
++	vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_DONE);
++
++	if (!port->enabled)
++		complete(&dev->frame_cmplt);
++}
++
++static void setup_mmal_port_format(struct bcm2835_isp_node *node,
++				   struct vchiq_mmal_port *port)
++{
++	struct bcm2835_isp_q_data *q_data = &node->q_data;
++
++	port->format.encoding = q_data->fmt->mmal_fmt;
++	/* Raw image format - set width/height */
++	port->es.video.width = (q_data->bytesperline << 3) / q_data->fmt->depth;
++	port->es.video.height = q_data->height;
++	port->es.video.crop.width = q_data->width;
++	port->es.video.crop.height = q_data->height;
++	port->es.video.crop.x = 0;
++	port->es.video.crop.y = 0;
++};
++
++static int setup_mmal_port(struct bcm2835_isp_node *node)
++{
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	unsigned int enable = 1;
++	int ret;
++
++	v4l2_dbg(2, debug, &dev->v4l2_dev, "%s: setup %s[%d]\n", __func__,
++		 node->name, node->id);
++
++	vchiq_mmal_port_parameter_set(dev->mmal_instance, node->port,
++				      MMAL_PARAMETER_ZERO_COPY, &enable,
++				      sizeof(enable));
++	setup_mmal_port_format(node, node->port);
++	ret = vchiq_mmal_port_set_format(dev->mmal_instance, node->port);
++	if (ret < 0) {
++		v4l2_dbg(1, debug, &dev->v4l2_dev,
++			 "%s: vchiq_mmal_port_set_format failed\n",
++			 __func__);
++		return ret;
++	}
++
++	if (node->q_data.sizeimage < node->port->minimum_buffer.size) {
++		v4l2_err(&dev->v4l2_dev,
++			 "buffer size mismatch sizeimage %u < min size %u\n",
++			 node->q_data.sizeimage,
++			 node->port->minimum_buffer.size);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int bcm2835_isp_mmal_buf_cleanup(struct mmal_buffer *mmal_buf)
++{
++	mmal_vchi_buffer_cleanup(mmal_buf);
++
++	if (mmal_buf->dma_buf) {
++		dma_buf_put(mmal_buf->dma_buf);
++		mmal_buf->dma_buf = NULL;
++	}
++
++	return 0;
++}
++
++static int bcm2835_isp_node_queue_setup(struct vb2_queue *q,
++					unsigned int *nbuffers,
++					unsigned int *nplanes,
++					unsigned int sizes[],
++					struct device *alloc_devs[])
++{
++	struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
++	unsigned int size;
++
++	if (setup_mmal_port(node))
++		return -EINVAL;
++
++	size = node->q_data.sizeimage;
++	if (size == 0) {
++		v4l2_info(&node_get_dev(node)->v4l2_dev,
++			  "%s: Image size unset in queue_setup for node %s[%d]\n",
++			  __func__, node->name, node->id);
++		return -EINVAL;
++	}
++
++	if (*nplanes)
++		return sizes[0] < size ? -EINVAL : 0;
++
++	*nplanes = 1;
++	sizes[0] = size;
++
++	node->port->current_buffer.size = size;
++
++	if (*nbuffers < node->port->minimum_buffer.num)
++		*nbuffers = node->port->minimum_buffer.num;
++
++	node->port->current_buffer.num = *nbuffers;
++
++	v4l2_dbg(2, debug, &node_get_dev(node)->v4l2_dev,
++		 "%s: Image size %u, nbuffers %u for node %s[%d]\n",
++		 __func__, sizes[0], *nbuffers, node->name, node->id);
++	return 0;
++}
++
++static int bcm2835_isp_buf_init(struct vb2_buffer *vb)
++{
++	struct bcm2835_isp_node *node = vb2_get_drv_priv(vb->vb2_queue);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
++	struct bcm2835_isp_buffer *buf =
++		container_of(vb2, struct bcm2835_isp_buffer, vb);
++
++	v4l2_dbg(3, debug, &dev->v4l2_dev, "%s: vb %p\n", __func__, vb);
++
++	buf->mmal.buffer = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
++	buf->mmal.buffer_size = vb2_plane_size(&buf->vb.vb2_buf, 0);
++	mmal_vchi_buffer_init(dev->mmal_instance, &buf->mmal);
++	return 0;
++}
++
++static int bcm2835_isp_buf_prepare(struct vb2_buffer *vb)
++{
++	struct bcm2835_isp_node *node = vb2_get_drv_priv(vb->vb2_queue);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
++	struct bcm2835_isp_buffer *buf =
++		container_of(vb2, struct bcm2835_isp_buffer, vb);
++	struct dma_buf *dma_buf;
++	int ret;
++
++	v4l2_dbg(3, debug, &dev->v4l2_dev, "%s: type: %d ptr %p\n",
++		 __func__, vb->vb2_queue->type, vb);
++
++	if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
++		if (vb2->field == V4L2_FIELD_ANY)
++			vb2->field = V4L2_FIELD_NONE;
++		if (vb2->field != V4L2_FIELD_NONE) {
++			v4l2_err(&dev->v4l2_dev,
++				 "%s field isn't supported\n", __func__);
++			return -EINVAL;
++		}
++	}
++
++	if (vb2_plane_size(vb, 0) < node->q_data.sizeimage) {
++		v4l2_err(&dev->v4l2_dev,
++			 "%s data will not fit into plane (%lu < %lu)\n",
++			 __func__, vb2_plane_size(vb, 0),
++			 (long)node->q_data.sizeimage);
++		return -EINVAL;
++	}
++
++	if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type))
++		vb2_set_plane_payload(vb, 0, node->q_data.sizeimage);
++
++	switch (vb->memory) {
++	case VB2_MEMORY_DMABUF:
++		dma_buf = dma_buf_get(vb->planes[0].m.fd);
++
++		if (dma_buf != buf->mmal.dma_buf) {
++			/*
++			 * dmabuf either hasn't already been mapped, or it has
++			 * changed.
++			 */
++			if (buf->mmal.dma_buf) {
++				v4l2_err(&dev->v4l2_dev,
++					 "%s Buffer changed - why did the core not call cleanup?\n",
++					 __func__);
++				bcm2835_isp_mmal_buf_cleanup(&buf->mmal);
++			}
++
++			buf->mmal.dma_buf = dma_buf;
++		} else {
++			/*
++			 * Already have a reference to the buffer, so release it
++			 * here.
++			 */
++			dma_buf_put(dma_buf);
++		}
++		ret = 0;
++		break;
++	case VB2_MEMORY_MMAP:
++		/*
++		 * We want to do this at init, but vb2_core_expbuf checks that
++		 * the index < q->num_buffers, and q->num_buffers only gets
++		 * updated once all the buffers are allocated.
++		 */
++		if (!buf->mmal.dma_buf) {
++			ret = vb2_core_expbuf_dmabuf(vb->vb2_queue,
++						     vb->vb2_queue->type,
++						     vb->index, 0, O_CLOEXEC,
++						     &buf->mmal.dma_buf);
++			v4l2_dbg(3, debug, &dev->v4l2_dev,
++				 "%s: exporting ptr %p to dmabuf %p\n",
++				 __func__, vb, buf->mmal.dma_buf);
++			if (ret)
++				v4l2_err(&dev->v4l2_dev,
++					 "%s: Failed to expbuf idx %d, ret %d\n",
++					 __func__, vb->index, ret);
++		} else {
++			ret = 0;
++		}
++		break;
++	default:
++		ret = -EINVAL;
++		break;
++	}
++
++	return ret;
++}
++
++static void bcm2835_isp_node_buffer_queue(struct vb2_buffer *buf)
++{
++	struct bcm2835_isp_node *node = vb2_get_drv_priv(buf->vb2_queue);
++	struct vb2_v4l2_buffer *vbuf =
++		container_of(buf, struct vb2_v4l2_buffer, vb2_buf);
++	struct bcm2835_isp_buffer *buffer =
++		container_of(vbuf, struct bcm2835_isp_buffer, vb);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++
++	v4l2_dbg(3, debug, &dev->v4l2_dev, "%s: node %s[%d], buffer %p\n",
++		 __func__, node->name, node->id, buffer);
++
++	vb2_to_mmal_buffer(&buffer->mmal, &buffer->vb);
++	v4l2_dbg(3, debug, &dev->v4l2_dev,
++		 "%s: node %s[%d] - submitting  mmal dmabuf %p\n", __func__,
++		 node->name, node->id, buffer->mmal.dma_buf);
++	vchiq_mmal_submit_buffer(dev->mmal_instance, node->port, &buffer->mmal);
++}
++
++static void bcm2835_isp_buffer_cleanup(struct vb2_buffer *vb)
++{
++	struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
++	struct bcm2835_isp_buffer *buffer =
++		container_of(vb2, struct bcm2835_isp_buffer, vb);
++
++	bcm2835_isp_mmal_buf_cleanup(&buffer->mmal);
++}
++
++static int bcm2835_isp_node_start_streaming(struct vb2_queue *q,
++					    unsigned int count)
++{
++	struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	int ret;
++
++	v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: node %s[%d] (count %u)\n",
++		 __func__, node->name, node->id, count);
++
++	ret = vchiq_mmal_component_enable(dev->mmal_instance, dev->component);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev, "%s: Failed enabling component, ret %d\n",
++			 __func__, ret);
++		return -EIO;
++	}
++
++	node->sequence = 0;
++	node->port->cb_ctx = node;
++	ret = vchiq_mmal_port_enable(dev->mmal_instance, node->port,
++				     mmal_buffer_cb);
++	if (!ret)
++		atomic_inc(&dev->num_streaming);
++	else
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: Failed enabling port, ret %d\n", __func__, ret);
++
++	return ret;
++}
++
++static void bcm2835_isp_node_stop_streaming(struct vb2_queue *q)
++{
++	struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	unsigned int i;
++	int ret;
++
++	v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: node %s[%d], mmal port %p\n",
++		 __func__, node->name, node->id, node->port);
++
++	init_completion(&dev->frame_cmplt);
++
++	/* Disable MMAL port - this will flush buffers back */
++	ret = vchiq_mmal_port_disable(dev->mmal_instance, node->port);
++	if (ret)
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: Failed disabling %s port, ret %d\n", __func__,
++			 node_is_output(node) ? "i/p" : "o/p",
++			 ret);
++
++	while (atomic_read(&node->port->buffers_with_vpu)) {
++		v4l2_dbg(1, debug, &dev->v4l2_dev,
++			 "%s: Waiting for buffers to be returned - %d outstanding\n",
++			 __func__, atomic_read(&node->port->buffers_with_vpu));
++		ret = wait_for_completion_timeout(&dev->frame_cmplt,
++						  COMPLETE_TIMEOUT);
++		if (ret <= 0) {
++			v4l2_err(&dev->v4l2_dev,
++				 "%s: Timeout waiting for buffers to be returned - %d outstanding\n",
++				 __func__,
++				 atomic_read(&node->port->buffers_with_vpu));
++			break;
++		}
++	}
++
++	/* Release the VCSM handle here to release the associated dmabuf */
++	for (i = 0; i < q->num_buffers; i++) {
++		struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(q->bufs[i]);
++		struct bcm2835_isp_buffer *buf =
++			container_of(vb2, struct bcm2835_isp_buffer, vb);
++		bcm2835_isp_mmal_buf_cleanup(&buf->mmal);
++	}
++
++	atomic_dec(&dev->num_streaming);
++	/* If all ports disabled, then disable the component */
++	if (atomic_read(&dev->num_streaming) == 0) {
++		ret = vchiq_mmal_component_disable(dev->mmal_instance,
++						   dev->component);
++		if (ret) {
++			v4l2_err(&dev->v4l2_dev,
++				 "%s: Failed disabling component, ret %d\n",
++				 __func__, ret);
++		}
++	}
++
++	/*
++	 * Simply wait for any vb2 buffers to finish. We could take steps to
++	 * make them complete more quickly if we care, or even return them
++	 * ourselves.
++	 */
++	vb2_wait_for_all_buffers(&node->queue);
++}
++
++static const struct vb2_ops bcm2835_isp_node_queue_ops = {
++	.queue_setup		= bcm2835_isp_node_queue_setup,
++	.buf_init		= bcm2835_isp_buf_init,
++	.buf_prepare		= bcm2835_isp_buf_prepare,
++	.buf_queue		= bcm2835_isp_node_buffer_queue,
++	.buf_cleanup		= bcm2835_isp_buffer_cleanup,
++	.start_streaming	= bcm2835_isp_node_start_streaming,
++	.stop_streaming		= bcm2835_isp_node_stop_streaming,
++};
++
++static const
++struct bcm2835_isp_fmt *get_default_format(struct bcm2835_isp_node *node)
++{
++	return node->supported_fmts[0];
++}
++
++static inline unsigned int get_bytesperline(int width,
++					    const struct bcm2835_isp_fmt *fmt)
++{
++	/* GPU aligns 24bpp images to a multiple of 32 pixels (not bytes). */
++	if (fmt->depth == 24)
++		return ALIGN(width, 32) * 3;
++	else
++		return ALIGN((width * fmt->depth) >> 3, fmt->bytesperline_align);
++}
++
++static inline unsigned int get_sizeimage(int bpl, int width, int height,
++					 const struct bcm2835_isp_fmt *fmt)
++{
++	return (bpl * height * fmt->size_multiplier_x2) >> 1;
++}
++
++static int bcm2835_isp_s_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct bcm2835_isp_dev *dev =
++	      container_of(ctrl->handler, struct bcm2835_isp_dev, ctrl_handler);
++	struct bcm2835_isp_node *node = &dev->node[0];
++	int ret = 0;
++
++	/*
++	 * The ISP firmware driver will ensure these settings are applied on
++	 * a frame boundary, so we are safe to write them as they come in.
++	 *
++	 * Note that the bcm2835_isp_* param structures are identical to the
++	 * mmal-parameters.h definitions.  This avoids the need for unnecessary
++	 * field-by-field copying between structures.
++	 */
++	switch (ctrl->id) {
++	case V4L2_CID_RED_BALANCE:
++		dev->r_gain = ctrl->val;
++		ret = set_wb_gains(node);
++		break;
++	case V4L2_CID_BLUE_BALANCE:
++		dev->b_gain = ctrl->val;
++		ret = set_wb_gains(node);
++		break;
++	case V4L2_CID_DIGITAL_GAIN:
++		ret = set_digital_gain(node, ctrl->val);
++		break;
++	case V4L2_CID_USER_BCM2835_ISP_CC_MATRIX:
++		ret = set_isp_param(node, MMAL_PARAMETER_CUSTOM_CCM,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_custom_ccm));
++		break;
++	case V4L2_CID_USER_BCM2835_ISP_LENS_SHADING:
++	{
++		struct bcm2835_isp_lens_shading *v4l2_ls;
++		struct mmal_parameter_lens_shading_v2 ls;
++		struct dma_buf *dmabuf;
++		void *vcsm_handle;
++
++		v4l2_ls = (struct bcm2835_isp_lens_shading *)ctrl->p_new.p_u8;
++		/*
++		 * struct bcm2835_isp_lens_shading and struct
++		 * mmal_parameter_lens_shading_v2 match so that we can do a
++		 * simple memcpy here.
++		 * Only the dmabuf to the actual table needs any manipulation.
++		 */
++		memcpy(&ls, v4l2_ls, sizeof(ls));
++
++		dmabuf = dma_buf_get(v4l2_ls->dmabuf);
++		if (IS_ERR_OR_NULL(dmabuf))
++			return -EINVAL;
++
++		ret = vc_sm_cma_import_dmabuf(dmabuf, &vcsm_handle);
++		if (ret) {
++			dma_buf_put(dmabuf);
++			return -EINVAL;
++		}
++
++		ls.mem_handle_table = vc_sm_cma_int_handle(vcsm_handle);
++		if (ls.mem_handle_table)
++			/* The VPU will take a reference on the vcsm handle,
++			 * which in turn will retain a reference on the dmabuf.
++			 * This code can therefore safely release all
++			 * references to the buffer.
++			 */
++			ret = set_isp_param(node,
++					    MMAL_PARAMETER_LENS_SHADING_OVERRIDE,
++					    &ls,
++					    sizeof(ls));
++		else
++			ret = -EINVAL;
++
++		vc_sm_cma_free(vcsm_handle);
++		dma_buf_put(dmabuf);
++		break;
++	}
++	case V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL:
++		ret = set_isp_param(node, MMAL_PARAMETER_BLACK_LEVEL,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_black_level));
++		break;
++	case V4L2_CID_USER_BCM2835_ISP_GEQ:
++		ret = set_isp_param(node, MMAL_PARAMETER_GEQ,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_geq));
++		break;
++	case V4L2_CID_USER_BCM2835_ISP_GAMMA:
++		ret = set_isp_param(node, MMAL_PARAMETER_GAMMA,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_gamma));
++		break;
++	case V4L2_CID_USER_BCM2835_ISP_DENOISE:
++		ret = set_isp_param(node, MMAL_PARAMETER_DENOISE,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_denoise));
++		break;
++	case V4L2_CID_USER_BCM2835_ISP_SHARPEN:
++		ret = set_isp_param(node, MMAL_PARAMETER_SHARPEN,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_sharpen));
++		break;
++	case V4L2_CID_USER_BCM2835_ISP_DPC:
++		ret = set_isp_param(node, MMAL_PARAMETER_DPC,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_dpc));
++		break;
++	default:
++		v4l2_info(&dev->v4l2_dev, "Unrecognised control\n");
++		ret = -EINVAL;
++	}
++
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev, "%s: Failed setting ctrl \"%s\" (%08x), err %d\n",
++			 __func__, ctrl->name, ctrl->id, ret);
++		ret = -EIO;
++	}
++
++	return ret;
++}
++
++static const struct v4l2_ctrl_ops bcm2835_isp_ctrl_ops = {
++	.s_ctrl = bcm2835_isp_s_ctrl,
++};
++
++static const struct v4l2_file_operations bcm2835_isp_fops = {
++	.owner		= THIS_MODULE,
++	.open		= v4l2_fh_open,
++	.release	= vb2_fop_release,
++	.poll		= vb2_fop_poll,
++	.unlocked_ioctl = video_ioctl2,
++	.mmap		= vb2_fop_mmap
++};
++
++static int populate_qdata_fmt(struct v4l2_format *f,
++			      struct bcm2835_isp_node *node)
++{
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	struct bcm2835_isp_q_data *q_data = &node->q_data;
++	int ret;
++
++	if (!node_is_stats(node)) {
++		v4l2_dbg(1, debug, &dev->v4l2_dev,
++			 "%s: Setting pix format for type %d, wxh: %ux%u, fmt: %08x, size %u\n",
++			 __func__, f->type, f->fmt.pix.width, f->fmt.pix.height,
++			 f->fmt.pix.pixelformat, f->fmt.pix.sizeimage);
++
++		q_data->fmt = find_format(f, node);
++		q_data->width = f->fmt.pix.width;
++		q_data->height = f->fmt.pix.height;
++		q_data->height = f->fmt.pix.height;
++
++		/* All parameters should have been set correctly by try_fmt */
++		q_data->bytesperline = f->fmt.pix.bytesperline;
++		q_data->sizeimage = f->fmt.pix.sizeimage;
++	} else {
++		v4l2_dbg(1, debug, &dev->v4l2_dev,
++			 "%s: Setting meta format for fmt: %08x, size %u\n",
++			 __func__, f->fmt.meta.dataformat,
++			 f->fmt.meta.buffersize);
++
++		q_data->fmt = find_format(f, node);
++		q_data->width = 0;
++		q_data->height = 0;
++		q_data->bytesperline = 0;
++		q_data->sizeimage = f->fmt.meta.buffersize;
++	}
++
++	v4l2_dbg(1, debug, &dev->v4l2_dev,
++		 "%s: Calculated bpl as %u, size %u\n", __func__,
++		 q_data->bytesperline, q_data->sizeimage);
++
++	setup_mmal_port_format(node, node->port);
++	ret = vchiq_mmal_port_set_format(dev->mmal_instance, node->port);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: Failed vchiq_mmal_port_set_format on port, ret %d\n",
++			 __func__, ret);
++		ret = -EINVAL;
++	}
++
++	if (q_data->sizeimage < node->port->minimum_buffer.size) {
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: Current buffer size of %u < min buf size %u - driver mismatch to MMAL\n",
++			 __func__,
++			 q_data->sizeimage,
++			 node->port->minimum_buffer.size);
++	}
++
++	v4l2_dbg(1, debug, &dev->v4l2_dev,
++		 "%s: Set format for type %d, wxh: %dx%d, fmt: %08x, size %u\n",
++		 __func__, f->type, q_data->width, q_data->height,
++		 q_data->fmt->fourcc, q_data->sizeimage);
++
++	return ret;
++}
++
++static int bcm2835_isp_node_querycap(struct file *file, void *priv,
++				     struct v4l2_capability *cap)
++{
++	strscpy(cap->driver, BCM2835_ISP_NAME, sizeof(cap->driver));
++	strscpy(cap->card, BCM2835_ISP_NAME, sizeof(cap->card));
++	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
++		 BCM2835_ISP_NAME);
++
++	return 0;
++}
++
++static int bcm2835_isp_node_g_fmt(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	struct bcm2835_isp_node *node = video_drvdata(file);
++
++	if (f->type != node->queue.type)
++		return -EINVAL;
++
++	if (node_is_stats(node)) {
++		f->fmt.meta.dataformat = V4L2_META_FMT_BCM2835_ISP_STATS;
++		f->fmt.meta.buffersize =
++			node->port->minimum_buffer.size;
++	} else {
++		struct bcm2835_isp_q_data *q_data = &node->q_data;
++
++		f->fmt.pix.width = q_data->width;
++		f->fmt.pix.height = q_data->height;
++		f->fmt.pix.field = V4L2_FIELD_NONE;
++		f->fmt.pix.pixelformat = q_data->fmt->fourcc;
++		f->fmt.pix.bytesperline = q_data->bytesperline;
++		f->fmt.pix.sizeimage = q_data->sizeimage;
++		f->fmt.pix.colorspace = q_data->fmt->colorspace;
++	}
++
++	return 0;
++}
++
++static int bcm2835_isp_node_enum_fmt(struct file *file, void  *priv,
++				     struct v4l2_fmtdesc *f)
++{
++	struct bcm2835_isp_node *node = video_drvdata(file);
++
++	if (f->type != node->queue.type)
++		return -EINVAL;
++
++	if (f->index < node->num_supported_fmts) {
++		/* Format found */
++		f->pixelformat = node->supported_fmts[f->index]->fourcc;
++		f->flags = 0;
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++static int bcm2835_isp_enum_framesizes(struct file *file, void *priv,
++				       struct v4l2_frmsizeenum *fsize)
++{
++	struct bcm2835_isp_node *node = video_drvdata(file);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	const struct bcm2835_isp_fmt *fmt;
++
++	if (node_is_stats(node) || fsize->index)
++		return -EINVAL;
++
++	fmt = find_format_by_fourcc(fsize->pixel_format, node);
++	if (!fmt) {
++		v4l2_err(&dev->v4l2_dev, "Invalid pixel code: %x\n",
++			 fsize->pixel_format);
++		return -EINVAL;
++	}
++
++	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
++	fsize->stepwise.min_width = MIN_DIM;
++	fsize->stepwise.max_width = MAX_DIM;
++	fsize->stepwise.step_width = fmt->step_size;
++
++	fsize->stepwise.min_height = MIN_DIM;
++	fsize->stepwise.max_height = MAX_DIM;
++	fsize->stepwise.step_height = fmt->step_size;
++
++	return 0;
++}
++
++static int bcm2835_isp_node_try_fmt(struct file *file, void *priv,
++				    struct v4l2_format *f)
++{
++	struct bcm2835_isp_node *node = video_drvdata(file);
++	const struct bcm2835_isp_fmt *fmt;
++
++	if (f->type != node->queue.type)
++		return -EINVAL;
++
++	fmt = find_format(f, node);
++	if (!fmt)
++		fmt = get_default_format(node);
++
++	if (!node_is_stats(node)) {
++		f->fmt.pix.width = max(min(f->fmt.pix.width, MAX_DIM),
++				       MIN_DIM);
++		f->fmt.pix.height = max(min(f->fmt.pix.height, MAX_DIM),
++					MIN_DIM);
++
++		f->fmt.pix.pixelformat = fmt->fourcc;
++		f->fmt.pix.colorspace = fmt->colorspace;
++		f->fmt.pix.bytesperline = get_bytesperline(f->fmt.pix.width,
++							   fmt);
++		f->fmt.pix.field = V4L2_FIELD_NONE;
++		f->fmt.pix.sizeimage =
++			get_sizeimage(f->fmt.pix.bytesperline, f->fmt.pix.width,
++				      f->fmt.pix.height, fmt);
++	} else {
++		f->fmt.meta.dataformat = fmt->fourcc;
++		f->fmt.meta.buffersize = node->port->minimum_buffer.size;
++	}
++
++	return 0;
++}
++
++static int bcm2835_isp_node_s_fmt(struct file *file, void *priv,
++				  struct v4l2_format *f)
++{
++	struct bcm2835_isp_node *node = video_drvdata(file);
++	int ret;
++
++	if (f->type != node->queue.type)
++		return -EINVAL;
++
++	ret = bcm2835_isp_node_try_fmt(file, priv, f);
++	if (ret)
++		return ret;
++
++	v4l2_dbg(1, debug, &node_get_dev(node)->v4l2_dev,
++		 "%s: Set format for node %s[%d]\n",
++		 __func__, node->name, node->id);
++
++	return populate_qdata_fmt(f, node);
++}
++
++static int bcm2835_isp_node_s_selection(struct file *file, void *fh,
++					struct v4l2_selection *s)
++{
++	struct mmal_parameter_crop crop;
++	struct bcm2835_isp_node *node = video_drvdata(file);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++
++	/* This return value is required fro V4L2 compliance. */
++	if (node_is_stats(node))
++		return -ENOTTY;
++
++	if (!s->r.width || !s->r.height)
++		return -EINVAL;
++
++	/* We can only set crop on the input. */
++	switch (s->target) {
++	case V4L2_SEL_TGT_CROP:
++		/*
++		 * Adjust the crop window if it goes outside of the frame
++		 * dimensions.
++		 */
++		s->r.left = min((unsigned int)max(s->r.left, 0),
++				node->q_data.width - MIN_DIM);
++		s->r.top = min((unsigned int)max(s->r.top, 0),
++			       node->q_data.height - MIN_DIM);
++		s->r.width = max(min(s->r.width,
++				     node->q_data.width - s->r.left), MIN_DIM);
++		s->r.height = max(min(s->r.height,
++				      node->q_data.height - s->r.top), MIN_DIM);
++		break;
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++		/* Default (i.e. no) crop window. */
++		s->r.left = 0;
++		s->r.top = 0;
++		s->r.width = node->q_data.width;
++		s->r.height = node->q_data.height;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	crop.rect.x = s->r.left;
++	crop.rect.y = s->r.top;
++	crop.rect.width = s->r.width;
++	crop.rect.height = s->r.height;
++
++	return vchiq_mmal_port_parameter_set(dev->mmal_instance, node->port,
++					     MMAL_PARAMETER_CROP,
++					     &crop, sizeof(crop));
++}
++
++static int bcm2835_isp_node_g_selection(struct file *file, void *fh,
++					struct v4l2_selection *s)
++{
++	struct mmal_parameter_crop crop;
++	struct bcm2835_isp_node *node = video_drvdata(file);
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	u32 crop_size = sizeof(crop);
++	int ret;
++
++	/* We can only return out an input crop. */
++	switch (s->target) {
++	case V4L2_SEL_TGT_CROP:
++		ret = vchiq_mmal_port_parameter_get(dev->mmal_instance,
++						    node->port,
++						    MMAL_PARAMETER_CROP,
++						    &crop, &crop_size);
++		if (!ret) {
++			s->r.left = crop.rect.x;
++			s->r.top = crop.rect.y;
++			s->r.width = crop.rect.width;
++			s->r.height = crop.rect.height;
++		}
++		break;
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		/* Default (i.e. no) crop window. */
++		s->r.left = 0;
++		s->r.top = 0;
++		s->r.width = node->q_data.width;
++		s->r.height = node->q_data.height;
++		ret = 0;
++		break;
++	default:
++		ret =  -EINVAL;
++	}
++
++	return ret;
++}
++
++static int bcm3285_isp_subscribe_event(struct v4l2_fh *fh,
++				       const struct v4l2_event_subscription *s)
++{
++	switch (s->type) {
++	/* Cannot change source parameters dynamically at runtime. */
++	case V4L2_EVENT_SOURCE_CHANGE:
++		return -EINVAL;
++	case V4L2_EVENT_CTRL:
++		return v4l2_ctrl_subscribe_event(fh, s);
++	default:
++		return v4l2_event_subscribe(fh, s, 4, NULL);
++	}
++}
++
++static const struct v4l2_ioctl_ops bcm2835_isp_node_ioctl_ops = {
++	.vidioc_querycap		= bcm2835_isp_node_querycap,
++	.vidioc_g_fmt_vid_cap		= bcm2835_isp_node_g_fmt,
++	.vidioc_g_fmt_vid_out		= bcm2835_isp_node_g_fmt,
++	.vidioc_g_fmt_meta_cap		= bcm2835_isp_node_g_fmt,
++	.vidioc_s_fmt_vid_cap		= bcm2835_isp_node_s_fmt,
++	.vidioc_s_fmt_vid_out		= bcm2835_isp_node_s_fmt,
++	.vidioc_s_fmt_meta_cap		= bcm2835_isp_node_s_fmt,
++	.vidioc_try_fmt_vid_cap		= bcm2835_isp_node_try_fmt,
++	.vidioc_try_fmt_vid_out		= bcm2835_isp_node_try_fmt,
++	.vidioc_try_fmt_meta_cap	= bcm2835_isp_node_try_fmt,
++	.vidioc_s_selection		= bcm2835_isp_node_s_selection,
++	.vidioc_g_selection		= bcm2835_isp_node_g_selection,
++
++	.vidioc_enum_fmt_vid_cap	= bcm2835_isp_node_enum_fmt,
++	.vidioc_enum_fmt_vid_out	= bcm2835_isp_node_enum_fmt,
++	.vidioc_enum_fmt_meta_cap	= bcm2835_isp_node_enum_fmt,
++	.vidioc_enum_framesizes		= bcm2835_isp_enum_framesizes,
++
++	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
++	.vidioc_querybuf		= vb2_ioctl_querybuf,
++	.vidioc_qbuf			= vb2_ioctl_qbuf,
++	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
++	.vidioc_expbuf			= vb2_ioctl_expbuf,
++	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
++	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
++
++	.vidioc_streamon		= vb2_ioctl_streamon,
++	.vidioc_streamoff		= vb2_ioctl_streamoff,
++
++	.vidioc_subscribe_event		= bcm3285_isp_subscribe_event,
++	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
++};
++
++/*
++ * Size of the array to provide to the VPU when asking for the list of supported
++ * formats.
++ *
++ * The ISP component currently advertises 44 input formats, so add a small
++ * overhead on that. Should the component advertise more formats then the excess
++ * will be dropped and a warning logged.
++ */
++#define MAX_SUPPORTED_ENCODINGS 50
++
++/* Populate node->supported_fmts with the formats supported by those ports. */
++static int bcm2835_isp_get_supported_fmts(struct bcm2835_isp_node *node)
++{
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++	struct bcm2835_isp_fmt const **list;
++	unsigned int i, j, num_encodings;
++	u32 fourccs[MAX_SUPPORTED_ENCODINGS];
++	u32 param_size = sizeof(fourccs);
++	int ret;
++
++	ret = vchiq_mmal_port_parameter_get(dev->mmal_instance, node->port,
++					    MMAL_PARAMETER_SUPPORTED_ENCODINGS,
++					    &fourccs, &param_size);
++
++	if (ret) {
++		if (ret == MMAL_MSG_STATUS_ENOSPC) {
++			v4l2_err(&dev->v4l2_dev,
++				 "%s: port has more encoding than we provided space for. Some are dropped.\n",
++				 __func__);
++			num_encodings = MAX_SUPPORTED_ENCODINGS;
++		} else {
++			v4l2_err(&dev->v4l2_dev, "%s: get_param ret %u.\n",
++				 __func__, ret);
++			return -EINVAL;
++		}
++	} else {
++		num_encodings = param_size / sizeof(u32);
++	}
++
++	/*
++	 * Assume at this stage that all encodings will be supported in V4L2.
++	 * Any that aren't supported will waste a very small amount of memory.
++	 */
++	list = devm_kzalloc(dev->dev,
++			    sizeof(struct bcm2835_isp_fmt *) * num_encodings,
++			    GFP_KERNEL);
++	if (!list)
++		return -ENOMEM;
++	node->supported_fmts = list;
++
++	for (i = 0, j = 0; i < num_encodings; i++) {
++		const struct bcm2835_isp_fmt *fmt = get_fmt(fourccs[i]);
++
++		if (fmt) {
++			list[j] = fmt;
++			j++;
++		}
++	}
++	node->num_supported_fmts = j;
++
++	return 0;
++}
++
++/*
++ * Register a device node /dev/video<N> to go along with one of the ISP's input
++ * or output nodes.
++ */
++static int register_node(struct bcm2835_isp_dev *dev,
++			 struct bcm2835_isp_node *node,
++			 int index)
++{
++	struct video_device *vfd;
++	struct vb2_queue *queue;
++	int ret;
++
++	mutex_init(&node->lock);
++
++	node->dev = dev;
++	vfd = &node->vfd;
++	queue = &node->queue;
++	queue->type = index_to_queue_type(index);
++	/*
++	 * Setup the node type-specific params.
++	 *
++	 * Only the OUTPUT node can set controls and crop windows. However,
++	 * we must allow the s/g_selection ioctl on the stats node as v4l2
++	 * compliance expects it to return a -ENOTTY, and the framework
++	 * does not handle it if the ioctl is disabled.
++	 */
++	switch (queue->type) {
++	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
++		vfd->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
++		node->id = index;
++		node->vfl_dir = VFL_DIR_TX;
++		node->name = "output";
++		node->port = &dev->component->input[node->id];
++		break;
++	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
++		vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
++		/* First Capture node starts at id 0, etc. */
++		node->id = index - BCM2835_ISP_NUM_OUTPUTS;
++		node->vfl_dir = VFL_DIR_RX;
++		node->name = "capture";
++		node->port = &dev->component->output[node->id];
++		v4l2_disable_ioctl(&node->vfd, VIDIOC_S_CTRL);
++		v4l2_disable_ioctl(&node->vfd, VIDIOC_S_SELECTION);
++		v4l2_disable_ioctl(&node->vfd, VIDIOC_G_SELECTION);
++		break;
++	case V4L2_BUF_TYPE_META_CAPTURE:
++		vfd->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
++		node->id = index - BCM2835_ISP_NUM_OUTPUTS;
++		node->vfl_dir = VFL_DIR_RX;
++		node->name = "stats";
++		node->port = &dev->component->output[node->id];
++		v4l2_disable_ioctl(&node->vfd, VIDIOC_S_CTRL);
++		v4l2_disable_ioctl(&node->vfd, VIDIOC_S_SELECTION);
++		v4l2_disable_ioctl(&node->vfd, VIDIOC_G_SELECTION);
++		break;
++	}
++
++	/* We use the selection API instead of the old crop API. */
++	v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
++	v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
++	v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
++
++	ret = bcm2835_isp_get_supported_fmts(node);
++	if (ret)
++		return ret;
++
++	/* Initialise the video node. */
++	vfd->vfl_type	= VFL_TYPE_VIDEO;
++	vfd->fops	= &bcm2835_isp_fops,
++	vfd->ioctl_ops	= &bcm2835_isp_node_ioctl_ops,
++	vfd->minor	= -1,
++	vfd->release	= video_device_release_empty,
++	vfd->queue	= &node->queue;
++	vfd->lock	= &node->lock;
++	vfd->v4l2_dev	= &dev->v4l2_dev;
++	vfd->vfl_dir	= node->vfl_dir;
++
++	node->q_data.fmt = get_default_format(node);
++	node->q_data.width = DEFAULT_DIM;
++	node->q_data.height = DEFAULT_DIM;
++	node->q_data.bytesperline =
++		get_bytesperline(DEFAULT_DIM, node->q_data.fmt);
++	node->q_data.sizeimage = node_is_stats(node) ?
++				 node->port->recommended_buffer.size :
++				 get_sizeimage(node->q_data.bytesperline,
++					       node->q_data.width,
++					       node->q_data.height,
++					       node->q_data.fmt);
++
++	queue->io_modes = VB2_MMAP | VB2_DMABUF;
++	queue->drv_priv = node;
++	queue->ops = &bcm2835_isp_node_queue_ops;
++	queue->mem_ops = &vb2_dma_contig_memops;
++	queue->buf_struct_size = sizeof(struct bcm2835_isp_buffer);
++	queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
++	queue->dev = dev->dev;
++	queue->lock = &node->queue_lock;
++
++	ret = vb2_queue_init(queue);
++	if (ret < 0) {
++		v4l2_info(&dev->v4l2_dev, "vb2_queue_init failed\n");
++		return ret;
++	}
++
++	/* Set some controls and defaults, but only on the VIDEO_OUTPUT node. */
++	if (node_is_output(node)) {
++		unsigned int i;
++
++		/* Use this ctrl template to assign custom ISP ctrls. */
++		struct v4l2_ctrl_config ctrl_template = {
++			.ops		= &bcm2835_isp_ctrl_ops,
++			.type		= V4L2_CTRL_TYPE_U8,
++			.def		= 0,
++			.min		= 0x00,
++			.max		= 0xff,
++			.step		= 1,
++		};
++
++		/* 3 standard controls, and an array of custom controls */
++		ret = v4l2_ctrl_handler_init(&dev->ctrl_handler,
++					     3 + ARRAY_SIZE(custom_ctrls));
++		if (ret) {
++			v4l2_err(&dev->v4l2_dev, "ctrl_handler init failed (%d)\n",
++				 ret);
++			goto queue_cleanup;
++		}
++
++		dev->r_gain = 1000;
++		dev->b_gain = 1000;
++
++		v4l2_ctrl_new_std(&dev->ctrl_handler,  &bcm2835_isp_ctrl_ops,
++				  V4L2_CID_RED_BALANCE, 1, 0xffff, 1,
++				  dev->r_gain);
++
++		v4l2_ctrl_new_std(&dev->ctrl_handler, &bcm2835_isp_ctrl_ops,
++				  V4L2_CID_BLUE_BALANCE, 1, 0xffff, 1,
++				  dev->b_gain);
++
++		v4l2_ctrl_new_std(&dev->ctrl_handler, &bcm2835_isp_ctrl_ops,
++				  V4L2_CID_DIGITAL_GAIN, 1, 0xffff, 1, 1000);
++
++		for (i = 0; i < ARRAY_SIZE(custom_ctrls); i++) {
++			ctrl_template.name = custom_ctrls[i].name;
++			ctrl_template.id = custom_ctrls[i].id;
++			ctrl_template.dims[0] = custom_ctrls[i].size;
++			ctrl_template.flags = custom_ctrls[i].flags;
++			v4l2_ctrl_new_custom(&dev->ctrl_handler,
++					     &ctrl_template, NULL);
++		}
++
++		node->vfd.ctrl_handler = &dev->ctrl_handler;
++		if (dev->ctrl_handler.error) {
++			ret = dev->ctrl_handler.error;
++			v4l2_err(&dev->v4l2_dev, "controls init failed (%d)\n",
++				 ret);
++			v4l2_ctrl_handler_free(&dev->ctrl_handler);
++			goto ctrl_cleanup;
++		}
++	}
++
++	/* Define the device names */
++	snprintf(vfd->name, sizeof(node->vfd.name), "%s-%s%d", BCM2835_ISP_NAME,
++		 node->name, node->id);
++
++	ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr + index);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev,
++			 "Failed to register video %s[%d] device node\n",
++			 node->name, node->id);
++		goto ctrl_cleanup;
++	}
++
++	node->registered = true;
++	video_set_drvdata(vfd, node);
++
++	v4l2_info(&dev->v4l2_dev,
++		  "Device node %s[%d] registered as /dev/video%d\n",
++		  node->name, node->id, vfd->num);
++
++	return 0;
++
++ctrl_cleanup:
++	if (node_is_output(node))
++		v4l2_ctrl_handler_free(&dev->ctrl_handler);
++queue_cleanup:
++	vb2_queue_release(&node->queue);
++	return ret;
++}
++
++/* Unregister one of the /dev/video<N> nodes associated with the ISP. */
++static void unregister_node(struct bcm2835_isp_node *node)
++{
++	struct bcm2835_isp_dev *dev = node_get_dev(node);
++
++	v4l2_info(&dev->v4l2_dev,
++		  "Unregistering node %s[%d] device node /dev/video%d\n",
++		  node->name, node->id, node->vfd.num);
++
++	if (node->registered) {
++		video_unregister_device(&node->vfd);
++		if (node_is_output(node))
++			v4l2_ctrl_handler_free(&dev->ctrl_handler);
++		vb2_queue_release(&node->queue);
++	}
++
++	/*
++	 * node->supported_fmts.list is free'd automatically
++	 * as a managed resource.
++	 */
++	node->supported_fmts = NULL;
++	node->num_supported_fmts = 0;
++	node->vfd.ctrl_handler = NULL;
++	node->registered = false;
++}
++
++static void media_controller_unregister(struct bcm2835_isp_dev *dev)
++{
++	unsigned int i;
++
++	v4l2_info(&dev->v4l2_dev, "Unregister from media controller\n");
++
++	if (dev->media_device_registered) {
++		media_device_unregister(&dev->mdev);
++		media_device_cleanup(&dev->mdev);
++		dev->media_device_registered = false;
++	}
++
++	kfree(dev->entity.name);
++	dev->entity.name = NULL;
++
++	if (dev->media_entity_registered) {
++		media_device_unregister_entity(&dev->entity);
++		dev->media_entity_registered = false;
++	}
++
++	for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
++		struct bcm2835_isp_node *node = &dev->node[i];
++
++		if (node->media_node_registered) {
++			media_remove_intf_links(node->intf_link->intf);
++			media_entity_remove_links(&dev->node[i].vfd.entity);
++			media_devnode_remove(node->intf_devnode);
++			media_device_unregister_entity(&node->vfd.entity);
++			kfree(node->vfd.entity.name);
++		}
++		node->media_node_registered = false;
++	}
++
++	dev->v4l2_dev.mdev = NULL;
++}
++
++static int media_controller_register_node(struct bcm2835_isp_dev *dev, int num)
++{
++	struct bcm2835_isp_node *node = &dev->node[num];
++	struct media_entity *entity = &node->vfd.entity;
++	int output = node_is_output(node);
++	char *name;
++	int ret;
++
++	v4l2_info(&dev->v4l2_dev,
++		  "Register %s node %d with media controller\n",
++		  output ? "output" : "capture", num);
++	entity->obj_type = MEDIA_ENTITY_TYPE_VIDEO_DEVICE;
++	entity->function = MEDIA_ENT_F_IO_V4L;
++	entity->info.dev.major = VIDEO_MAJOR;
++	entity->info.dev.minor = node->vfd.minor;
++	name = kmalloc(BCM2835_ISP_ENTITY_NAME_LEN, GFP_KERNEL);
++	if (!name) {
++		ret = -ENOMEM;
++		goto error_no_mem;
++	}
++	snprintf(name, BCM2835_ISP_ENTITY_NAME_LEN, "%s0-%s%d",
++		 BCM2835_ISP_NAME, output ? "output" : "capture", num);
++	entity->name = name;
++	node->pad.flags = output ? MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
++	ret = media_entity_pads_init(entity, 1, &node->pad);
++	if (ret)
++		goto error_pads_init;
++	ret = media_device_register_entity(&dev->mdev, entity);
++	if (ret)
++		goto error_register_entity;
++
++	node->intf_devnode = media_devnode_create(&dev->mdev,
++						  MEDIA_INTF_T_V4L_VIDEO, 0,
++						  VIDEO_MAJOR, node->vfd.minor);
++	if (!node->intf_devnode) {
++		ret = -ENOMEM;
++		goto error_devnode_create;
++	}
++
++	node->intf_link = media_create_intf_link(entity,
++						 &node->intf_devnode->intf,
++						 MEDIA_LNK_FL_IMMUTABLE |
++						 MEDIA_LNK_FL_ENABLED);
++	if (!node->intf_link) {
++		ret = -ENOMEM;
++		goto error_create_intf_link;
++	}
++
++	if (output)
++		ret = media_create_pad_link(entity, 0, &dev->entity, num,
++					    MEDIA_LNK_FL_IMMUTABLE |
++						    MEDIA_LNK_FL_ENABLED);
++	else
++		ret = media_create_pad_link(&dev->entity, num, entity, 0,
++					    MEDIA_LNK_FL_IMMUTABLE |
++					    MEDIA_LNK_FL_ENABLED);
++	if (ret)
++		goto error_create_pad_link;
++
++	dev->node[num].media_node_registered = true;
++	return 0;
++
++error_create_pad_link:
++	media_remove_intf_links(&node->intf_devnode->intf);
++error_create_intf_link:
++	media_devnode_remove(node->intf_devnode);
++error_devnode_create:
++	media_device_unregister_entity(&node->vfd.entity);
++error_register_entity:
++error_pads_init:
++	kfree(entity->name);
++	entity->name = NULL;
++error_no_mem:
++	if (ret)
++		v4l2_info(&dev->v4l2_dev, "Error registering node\n");
++
++	return ret;
++}
++
++static int media_controller_register(struct bcm2835_isp_dev *dev)
++{
++	char *name;
++	unsigned int i;
++	int ret;
++
++	v4l2_dbg(2, debug, &dev->v4l2_dev, "Registering with media controller\n");
++	dev->mdev.dev = dev->dev;
++	strscpy(dev->mdev.model, "bcm2835-isp",
++		sizeof(dev->mdev.model));
++	strscpy(dev->mdev.bus_info, "platform:bcm2835-isp",
++		sizeof(dev->mdev.bus_info));
++	media_device_init(&dev->mdev);
++	dev->v4l2_dev.mdev = &dev->mdev;
++
++	v4l2_dbg(2, debug, &dev->v4l2_dev, "Register entity for nodes\n");
++
++	name = kmalloc(BCM2835_ISP_ENTITY_NAME_LEN, GFP_KERNEL);
++	if (!name) {
++		ret = -ENOMEM;
++		goto done;
++	}
++	snprintf(name, BCM2835_ISP_ENTITY_NAME_LEN, "bcm2835_isp0");
++	dev->entity.name = name;
++	dev->entity.obj_type = MEDIA_ENTITY_TYPE_BASE;
++	dev->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
++
++	for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
++		dev->pad[i].flags = node_is_output(&dev->node[i]) ?
++					MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
++	}
++
++	ret = media_entity_pads_init(&dev->entity, BCM2835_ISP_NUM_NODES,
++				     dev->pad);
++	if (ret)
++		goto done;
++
++	ret = media_device_register_entity(&dev->mdev, &dev->entity);
++	if (ret)
++		goto done;
++
++	dev->media_entity_registered = true;
++	for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
++		ret = media_controller_register_node(dev, i);
++		if (ret)
++			goto done;
++	}
++
++	ret = media_device_register(&dev->mdev);
++	if (!ret)
++		dev->media_device_registered = true;
++done:
++	return ret;
++}
++
++static int bcm2835_isp_remove(struct platform_device *pdev)
++{
++	struct bcm2835_isp_dev *dev = platform_get_drvdata(pdev);
++	unsigned int i;
++
++	media_controller_unregister(dev);
++
++	for (i = 0; i < BCM2835_ISP_NUM_NODES; i++)
++		unregister_node(&dev->node[i]);
++
++	v4l2_device_unregister(&dev->v4l2_dev);
++
++	if (dev->component)
++		vchiq_mmal_component_finalise(dev->mmal_instance,
++					      dev->component);
++
++	vchiq_mmal_finalise(dev->mmal_instance);
++
++	return 0;
++}
++
++static int bcm2835_isp_probe(struct platform_device *pdev)
++{
++	struct bcm2835_isp_dev *dev;
++	unsigned int i;
++	int ret;
++
++	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
++	if (!dev)
++		return -ENOMEM;
++
++	dev->dev = &pdev->dev;
++
++	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
++	if (ret)
++		return ret;
++
++	ret = vchiq_mmal_init(&dev->mmal_instance);
++	if (ret) {
++		v4l2_device_unregister(&dev->v4l2_dev);
++		return ret;
++	}
++
++	ret = vchiq_mmal_component_init(dev->mmal_instance, "ril.isp",
++					&dev->component);
++	if (ret) {
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: failed to create ril.isp component\n", __func__);
++		goto error;
++	}
++
++	if (dev->component->inputs < BCM2835_ISP_NUM_OUTPUTS ||
++	    dev->component->outputs < BCM2835_ISP_NUM_CAPTURES +
++					BCM2835_ISP_NUM_METADATA) {
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: ril.isp returned %d i/p (%d expected), %d o/p (%d expected) ports\n",
++			  __func__, dev->component->inputs,
++			  BCM2835_ISP_NUM_OUTPUTS,
++			  dev->component->outputs,
++			  BCM2835_ISP_NUM_CAPTURES + BCM2835_ISP_NUM_METADATA);
++		goto error;
++	}
++
++	atomic_set(&dev->num_streaming, 0);
++
++	for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
++		struct bcm2835_isp_node *node = &dev->node[i];
++
++		ret = register_node(dev, node, i);
++		if (ret)
++			goto error;
++	}
++
++	ret = media_controller_register(dev);
++	if (ret)
++		goto error;
++
++	platform_set_drvdata(pdev, dev);
++	v4l2_info(&dev->v4l2_dev, "Loaded V4L2 %s\n", BCM2835_ISP_NAME);
++	return 0;
++
++error:
++	bcm2835_isp_remove(pdev);
++
++	return ret;
++}
++
++static struct platform_driver bcm2835_isp_pdrv = {
++	.probe = bcm2835_isp_probe,
++	.remove = bcm2835_isp_remove,
++	.driver = {
++			.name = BCM2835_ISP_NAME,
++		  },
++};
++
++module_platform_driver(bcm2835_isp_pdrv);
++
++MODULE_DESCRIPTION("BCM2835 ISP driver");
++MODULE_AUTHOR("Naushir Patuck <naush@raspberrypi.com>");
++MODULE_LICENSE("GPL");
++MODULE_VERSION("1.0");
++MODULE_ALIAS("platform:bcm2835-isp");
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
+@@ -113,6 +113,10 @@
+  */
+ #define MMAL_ENCODING_EGL_IMAGE        MMAL_FOURCC('E', 'G', 'L', 'I')
+ 
++/** ISP image statistics format
++ */
++#define MMAL_ENCODING_BRCM_STATS       MMAL_FOURCC('S', 'T', 'A', 'T')
++
+ /* }@ */
+ 
+ /** \name Pre-defined audio encodings */
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -221,6 +221,62 @@ enum mmal_parameter_camera_type {
+ 	MMAL_PARAMETER_SHUTTER_SPEED,
+ 		/**< Takes a @ref MMAL_PARAMETER_AWB_GAINS_T */
+ 	MMAL_PARAMETER_CUSTOM_AWB_GAINS,
++		/**< Takes a @ref MMAL_PARAMETER_CAMERA_SETTINGS_T */
++	MMAL_PARAMETER_CAMERA_SETTINGS,
++		/**< Takes a @ref MMAL_PARAMETER_PRIVACY_INDICATOR_T */
++	MMAL_PARAMETER_PRIVACY_INDICATOR,
++		/**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_VIDEO_DENOISE,
++		/**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_STILLS_DENOISE,
++		/**< Takes a @ref MMAL_PARAMETER_CAMERA_ANNOTATE_T */
++	MMAL_PARAMETER_ANNOTATE,
++		/**< Takes a @ref MMAL_PARAMETER_STEREOSCOPIC_MODE_T */
++	MMAL_PARAMETER_STEREOSCOPIC_MODE,
++		/**< Takes a @ref MMAL_PARAMETER_CAMERA_INTERFACE_T */
++	MMAL_PARAMETER_CAMERA_INTERFACE,
++		/**< Takes a @ref MMAL_PARAMETER_CAMERA_CLOCKING_MODE_T */
++	MMAL_PARAMETER_CAMERA_CLOCKING_MODE,
++		/**< Takes a @ref MMAL_PARAMETER_CAMERA_RX_CONFIG_T */
++	MMAL_PARAMETER_CAMERA_RX_CONFIG,
++		/**< Takes a @ref MMAL_PARAMETER_CAMERA_RX_TIMING_T */
++	MMAL_PARAMETER_CAMERA_RX_TIMING,
++		/**< Takes a @ref MMAL_PARAMETER_UINT32_T */
++	MMAL_PARAMETER_DPF_CONFIG,
++
++	/* 0x50 */
++		/**< Takes a @ref MMAL_PARAMETER_UINT32_T */
++	MMAL_PARAMETER_JPEG_RESTART_INTERVAL,
++		/**< Takes a @ref MMAL_PARAMETER_UINT32_T */
++	MMAL_PARAMETER_CAMERA_ISP_BLOCK_OVERRIDE,
++		/**< Takes a @ref MMAL_PARAMETER_LENS_SHADING_T */
++	MMAL_PARAMETER_LENS_SHADING_OVERRIDE,
++		/**< Takes a @ref MMAL_PARAMETER_UINT32_T */
++	MMAL_PARAMETER_BLACK_LEVEL,
++		/**< Takes a @ref MMAL_PARAMETER_RESIZE_T */
++	MMAL_PARAMETER_RESIZE_PARAMS,
++		/**< Takes a @ref MMAL_PARAMETER_CROP_T */
++	MMAL_PARAMETER_CROP,
++		/**< Takes a @ref MMAL_PARAMETER_INT32_T */
++	MMAL_PARAMETER_OUTPUT_SHIFT,
++		/**< Takes a @ref MMAL_PARAMETER_INT32_T */
++	MMAL_PARAMETER_CCM_SHIFT,
++		/**< Takes a @ref MMAL_PARAMETER_CUSTOM_CCM_T */
++	MMAL_PARAMETER_CUSTOM_CCM,
++		/**< Takes a @ref MMAL_PARAMETER_RATIONAL_T */
++	MMAL_PARAMETER_ANALOG_GAIN,
++		/**< Takes a @ref MMAL_PARAMETER_RATIONAL_T */
++	MMAL_PARAMETER_DIGITAL_GAIN,
++		/**< Takes a @ref MMAL_PARAMETER_DENOISE_T */
++	MMAL_PARAMETER_DENOISE,
++		/**< Takes a @ref MMAL_PARAMETER_SHARPEN_T */
++	MMAL_PARAMETER_SHARPEN,
++		/**< Takes a @ref MMAL_PARAMETER_GEQ_T */
++	MMAL_PARAMETER_GEQ,
++		/**< Tales a @ref MMAP_PARAMETER_DPC_T */
++	MMAL_PARAMETER_DPC,
++		/**< Tales a @ref MMAP_PARAMETER_GAMMA_T */
++	MMAL_PARAMETER_GAMMA,
+ };
+ 
+ struct mmal_parameter_rational {
+@@ -789,7 +845,102 @@ struct mmal_parameter_camera_info {
+ 	struct mmal_parameter_camera_info_camera
+ 		cameras[MMAL_PARAMETER_CAMERA_INFO_MAX_CAMERAS];
+ 	struct mmal_parameter_camera_info_flash
+-				flashes[MMAL_PARAMETER_CAMERA_INFO_MAX_FLASHES];
++		flashes[MMAL_PARAMETER_CAMERA_INFO_MAX_FLASHES];
++};
++
++struct mmal_parameter_ccm {
++	struct mmal_parameter_rational ccm[3][3];
++	s32 offsets[3];
++};
++
++struct mmal_parameter_custom_ccm {
++	u32 enabled; /**< Enable the custom CCM. */
++	struct mmal_parameter_ccm ccm; /**< CCM to be used. */
++};
++
++struct mmal_parameter_lens_shading {
++	u32 enabled;
++	u32 grid_cell_size;
++	u32 grid_width;
++	u32 grid_stride;
++	u32 grid_height;
++	u32 mem_handle_table;
++	u32 ref_transform;
++};
++
++enum mmal_parameter_ls_gain_format_type {
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U0P8_1 = 0,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U1P7_0 = 1,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U1P7_1 = 2,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U2P6_0 = 3,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U2P6_1 = 4,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U3P5_0 = 5,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U3P5_1 = 6,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_U4P10  = 7,
++	MMAL_PARAMETER_LS_GAIN_FORMAT_TYPE_DUMMY  = 0x7FFFFFFF
++};
++
++struct mmal_parameter_lens_shading_v2 {
++	u32 enabled;
++	u32 grid_cell_size;
++	u32 grid_width;
++	u32 grid_stride;
++	u32 grid_height;
++	u32 mem_handle_table;
++	u32 ref_transform;
++	u32 corner_sampled;
++	enum mmal_parameter_ls_gain_format_type gain_format;
++};
++
++struct mmal_parameter_black_level {
++	u32 enabled;
++	u16 black_level_r;
++	u16 black_level_g;
++	u16 black_level_b;
++	u8 pad_[2]; /* Unused */
++};
++
++struct mmal_parameter_geq {
++	u32 enabled;
++	u32 offset;
++	struct mmal_parameter_rational slope;
++};
++
++#define MMAL_NUM_GAMMA_PTS 33
++struct mmal_parameter_gamma {
++	u32 enabled;
++	u16 x[MMAL_NUM_GAMMA_PTS];
++	u16 y[MMAL_NUM_GAMMA_PTS];
++};
++
++struct mmal_parameter_denoise {
++	u32 enabled;
++	u32 constant;
++	struct mmal_parameter_rational slope;
++	struct mmal_parameter_rational strength;
++};
++
++struct mmal_parameter_sharpen {
++	u32 enabled;
++	struct mmal_parameter_rational threshold;
++	struct mmal_parameter_rational strength;
++	struct mmal_parameter_rational limit;
++};
++
++enum mmal_dpc_mode {
++	MMAL_DPC_MODE_OFF = 0,
++	MMAL_DPC_MODE_NORMAL = 1,
++	MMAL_DPC_MODE_STRONG = 2,
++	MMAL_DPC_MODE_MAX = 0x7FFFFFFF,
++};
++
++struct mmal_parameter_dpc {
++	u32 enabled;
++	u32 strength;
++};
++
++struct mmal_parameter_crop {
++	struct vchiq_mmal_rect rect;
+ };
+ 
+ #endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0304-gpio-Add-gpio-fsm-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0304-gpio-Add-gpio-fsm-driver.patch
new file mode 100644
index 0000000000..4d7d508535
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0304-gpio-Add-gpio-fsm-driver.patch
@@ -0,0 +1,1330 @@
+From 0e9965786b924d979b7ca274fada7ba0c8e4ca51 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 30 Sep 2020 12:00:54 +0100
+Subject: [PATCH] gpio: Add gpio-fsm driver
+
+The gpio-fsm driver implements simple state machines that allow GPIOs
+to be controlled in response to inputs from other GPIOs - real and
+soft/virtual - and time delays. It can:
++ create dummy GPIOs for drivers that demand them,
++ drive multiple GPIOs from a single input, with optional delays,
++ add a debounce circuit to an input,
++ drive pattern sequences onto LEDs
+etc.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+gpio-fsm: Fix a build warning
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+gpio-fsm: Rename 'num-soft-gpios' to avoid warning
+
+As of 5.10, the Device Tree parser warns about properties that look
+like references to "suppliers" of various services. "num-soft-gpios"
+resembles a declaration of a GPIO called "num-soft", causing the value
+to be interpreted as a phandle, the owner of which is checked for a
+"#gpio-cells" property.
+
+To avoid this warning, rename the gpio-fsm property to "num-swgpios".
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+gpio-fsm: Show state info in /sys/class/gpio-fsm
+
+Add gpio-fsm sysfs entries under /sys/class/gpio-fsm. For each state
+machine show the current state, which state (if any) will be entered
+after a delay, and the current value of that delay.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+gpio-fsm: Fix shutdown timeout handling
+
+The driver is intended to jump directly to a shutdown state in the
+event of a timeout during shutdown, but the sense of the test was
+inverted.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+gpio-fsm: Clamp the delay time to zero
+
+The sysfs delay_ms value is calculated live, and it is possible for
+the time left to appear to be negative briefly if the timer handling
+hasn't completed. Ensure the displayed value never goes below zero,
+for the sake of appearances.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/gpio/Kconfig                |    9 +
+ drivers/gpio/Makefile               |    1 +
+ drivers/gpio/gpio-fsm.c             | 1210 +++++++++++++++++++++++++++
+ include/dt-bindings/gpio/gpio-fsm.h |   21 +
+ 4 files changed, 1241 insertions(+)
+ create mode 100644 drivers/gpio/gpio-fsm.c
+ create mode 100644 include/dt-bindings/gpio/gpio-fsm.h
+
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -1232,6 +1232,15 @@ config HTC_EGPIO
+ 	  several HTC phones.  It provides basic support for input
+ 	  pins, output pins, and irqs.
+ 
++config GPIO_FSM
++	tristate "GPIO FSM support"
++	help
++	  The GPIO FSM driver allows the creation of state machines for
++	  manipulating GPIOs (both real and virtual), with state transitions
++	  triggered by GPIO edges or delays.
++
++	  If unsure, say N.
++
+ config GPIO_JANZ_TTL
+ 	tristate "Janz VMOD-TTL Digital IO Module"
+ 	depends on MFD_JANZ_CMODIO
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -62,6 +62,7 @@ obj-$(CONFIG_GPIO_EP93XX)		+= gpio-ep93x
+ obj-$(CONFIG_GPIO_EXAR)			+= gpio-exar.o
+ obj-$(CONFIG_GPIO_F7188X)		+= gpio-f7188x.o
+ obj-$(CONFIG_GPIO_FTGPIO010)		+= gpio-ftgpio010.o
++obj-$(CONFIG_GPIO_FSM)			+= gpio-fsm.o
+ obj-$(CONFIG_GPIO_GE_FPGA)		+= gpio-ge.o
+ obj-$(CONFIG_GPIO_GPIO_MM)		+= gpio-gpio-mm.o
+ obj-$(CONFIG_GPIO_GRGPIO)		+= gpio-grgpio.o
+--- /dev/null
++++ b/drivers/gpio/gpio-fsm.c
+@@ -0,0 +1,1210 @@
++// SPDX-License-Identifier: GPL-2.0+
++/*
++ *  GPIO FSM driver
++ *
++ *  This driver implements simple state machines that allow real GPIOs to be
++ *  controlled in response to inputs from other GPIOs - real and soft/virtual -
++ *  and time delays. It can:
++ *  + create dummy GPIOs for drivers that demand them
++ *  + drive multiple GPIOs from a single input,  with optional delays
++ *  + add a debounce circuit to an input
++ *  + drive pattern sequences onto LEDs
++ *  etc.
++ *
++ *  Copyright (C) 2020 Raspberry Pi (Trading) Ltd.
++ */
++
++#include <linux/err.h>
++#include <linux/gpio.h>
++#include <linux/gpio/driver.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/sysfs.h>
++
++#include <dt-bindings/gpio/gpio-fsm.h>
++
++#define MODULE_NAME "gpio-fsm"
++
++#define GF_IO_TYPE(x) ((u32)(x) & 0xffff)
++#define GF_IO_INDEX(x) ((u32)(x) >> 16)
++
++enum {
++	SIGNAL_GPIO,
++	SIGNAL_SOFT
++};
++
++enum {
++	INPUT_GPIO,
++	INPUT_SOFT
++};
++
++enum {
++	SYM_UNDEFINED,
++	SYM_NAME,
++	SYM_SET,
++	SYM_START,
++	SYM_SHUTDOWN,
++
++	SYM_MAX
++};
++
++struct soft_gpio {
++	int dir;
++	int value;
++};
++
++struct input_gpio_state {
++	struct gpio_fsm *gf;
++	struct gpio_desc  *desc;
++	struct fsm_state *target;
++	int index;
++	int value;
++	int irq;
++	bool enabled;
++	bool active_low;
++};
++
++struct gpio_event {
++	int index;
++	int value;
++	struct fsm_state *target;
++};
++
++struct symtab_entry {
++	const char *name;
++	void *value;
++	struct symtab_entry *next;
++};
++
++struct output_signal {
++	u8 type;
++	u8 value;
++	u16 index;
++};
++
++struct fsm_state {
++	const char *name;
++	struct output_signal *signals;
++	struct gpio_event *gpio_events;
++	struct gpio_event *soft_events;
++	struct fsm_state *delay_target;
++	struct fsm_state *shutdown_target;
++	unsigned int num_signals;
++	unsigned int num_gpio_events;
++	unsigned int num_soft_events;
++	unsigned int delay_ms;
++	unsigned int shutdown_ms;
++};
++
++struct gpio_fsm {
++	struct gpio_chip gc;
++	struct device *dev;
++	spinlock_t spinlock;
++	struct work_struct work;
++	struct timer_list timer;
++	wait_queue_head_t shutdown_event;
++	struct fsm_state *states;
++	struct input_gpio_state *input_gpio_states;
++	struct gpio_descs *input_gpios;
++	struct gpio_descs *output_gpios;
++	struct soft_gpio *soft_gpios;
++	struct fsm_state *start_state;
++	struct fsm_state *shutdown_state;
++	unsigned int num_states;
++	unsigned int num_output_gpios;
++	unsigned int num_input_gpios;
++	unsigned int num_soft_gpios;
++	unsigned int shutdown_timeout_ms;
++	unsigned int shutdown_jiffies;
++
++	struct fsm_state *current_state;
++	struct fsm_state *next_state;
++	struct fsm_state *delay_target_state;
++	unsigned int delay_jiffies;
++	int delay_ms;
++	unsigned int debug;
++	bool shutting_down;
++	struct symtab_entry *symtab;
++};
++
++static struct symtab_entry *do_add_symbol(struct symtab_entry **symtab,
++					  const char *name, void *value)
++{
++	struct symtab_entry **p = symtab;
++
++	while (*p && strcmp((*p)->name, name))
++		p = &(*p)->next;
++
++	if (*p) {
++		/* This is an existing symbol */
++		if ((*p)->value) {
++			/* Already defined */
++			if (value) {
++				if ((uintptr_t)value < SYM_MAX)
++					return ERR_PTR(-EINVAL);
++				else
++					return ERR_PTR(-EEXIST);
++			}
++		} else {
++			/* Undefined */
++			(*p)->value = value;
++		}
++	} else {
++		/* This is a new symbol */
++		*p = kmalloc(sizeof(struct symtab_entry), GFP_KERNEL);
++		if (*p) {
++			(*p)->name = name;
++			(*p)->value = value;
++			(*p)->next = NULL;
++		}
++	}
++	return *p;
++}
++
++static int add_symbol(struct symtab_entry **symtab,
++		      const char *name, void *value)
++{
++	struct symtab_entry *sym = do_add_symbol(symtab, name, value);
++
++	return PTR_ERR_OR_ZERO(sym);
++}
++
++static struct symtab_entry *get_symbol(struct symtab_entry **symtab,
++				       const char *name)
++{
++	struct symtab_entry *sym = do_add_symbol(symtab, name, NULL);
++
++	if (IS_ERR(sym))
++		return NULL;
++	return sym;
++}
++
++static void free_symbols(struct symtab_entry **symtab)
++{
++	struct symtab_entry *sym = *symtab;
++	void *p;
++
++	*symtab = NULL;
++	while (sym) {
++		p = sym;
++		sym = sym->next;
++		kfree(p);
++	}
++}
++
++static int gpio_fsm_get_direction(struct gpio_chip *gc, unsigned int off)
++{
++	struct gpio_fsm *gf = gpiochip_get_data(gc);
++	struct soft_gpio *sg;
++
++	if (off >= gf->num_soft_gpios)
++		return -EINVAL;
++	sg = &gf->soft_gpios[off];
++
++	return sg->dir;
++}
++
++static int gpio_fsm_get(struct gpio_chip *gc, unsigned int off)
++{
++	struct gpio_fsm *gf = gpiochip_get_data(gc);
++	struct soft_gpio *sg;
++
++	if (off >= gf->num_soft_gpios)
++		return -EINVAL;
++	sg = &gf->soft_gpios[off];
++
++	return sg->value;
++}
++
++static void gpio_fsm_go_to_state(struct gpio_fsm *gf,
++				   struct fsm_state *new_state)
++{
++	struct input_gpio_state *inp_state;
++	struct gpio_event *gp_ev;
++	struct fsm_state *state;
++	int i;
++
++	dev_dbg(gf->dev, "go_to_state(%s)\n",
++		  new_state ? new_state->name : "<unset>");
++
++	spin_lock(&gf->spinlock);
++
++	if (gf->next_state) {
++		/* Something else has already requested a transition */
++		spin_unlock(&gf->spinlock);
++		return;
++	}
++
++	gf->next_state = new_state;
++	state = gf->current_state;
++	gf->delay_target_state = NULL;
++
++	if (state) {
++		/* Disarm any GPIO IRQs */
++		for (i = 0; i < state->num_gpio_events; i++) {
++			gp_ev = &state->gpio_events[i];
++			inp_state = &gf->input_gpio_states[gp_ev->index];
++			inp_state->target = NULL;
++		}
++	}
++
++	spin_unlock(&gf->spinlock);
++
++	if (new_state)
++		schedule_work(&gf->work);
++}
++
++static void gpio_fsm_set_soft(struct gpio_fsm *gf,
++				unsigned int off, int val)
++{
++	struct soft_gpio *sg = &gf->soft_gpios[off];
++	struct gpio_event *gp_ev;
++	struct fsm_state *state;
++	int i;
++
++	dev_dbg(gf->dev, "set(%d,%d)\n", off, val);
++	state = gf->current_state;
++	sg->value = val;
++	for (i = 0; i < state->num_soft_events; i++) {
++		gp_ev = &state->soft_events[i];
++		if (gp_ev->index == off && gp_ev->value == val) {
++			if (gf->debug)
++				dev_info(gf->dev,
++					 "GF_SOFT %d->%d -> %s\n", gp_ev->index,
++					 gp_ev->value, gp_ev->target->name);
++			gpio_fsm_go_to_state(gf, gp_ev->target);
++			break;
++		}
++	}
++}
++
++static int gpio_fsm_direction_input(struct gpio_chip *gc, unsigned int off)
++{
++	struct gpio_fsm *gf = gpiochip_get_data(gc);
++	struct soft_gpio *sg;
++
++	if (off >= gf->num_soft_gpios)
++		return -EINVAL;
++	sg = &gf->soft_gpios[off];
++	sg->dir = GPIOF_DIR_IN;
++
++	return 0;
++}
++
++static int gpio_fsm_direction_output(struct gpio_chip *gc, unsigned int off,
++				       int value)
++{
++	struct gpio_fsm *gf = gpiochip_get_data(gc);
++	struct soft_gpio *sg;
++
++	if (off >= gf->num_soft_gpios)
++		return -EINVAL;
++	sg = &gf->soft_gpios[off];
++	sg->dir = GPIOF_DIR_OUT;
++	gpio_fsm_set_soft(gf, off, value);
++
++	return 0;
++}
++
++static void gpio_fsm_set(struct gpio_chip *gc, unsigned int off, int val)
++{
++	struct gpio_fsm *gf;
++
++	gf = gpiochip_get_data(gc);
++	if (off < gf->num_soft_gpios)
++		gpio_fsm_set_soft(gf, off, val);
++}
++
++static void gpio_fsm_enter_state(struct gpio_fsm *gf,
++				   struct fsm_state *state)
++{
++	struct input_gpio_state *inp_state;
++	struct output_signal *signal;
++	struct gpio_event *event;
++	struct gpio_desc *gpiod;
++	struct soft_gpio *soft;
++	int value;
++	int i;
++
++	dev_dbg(gf->dev, "enter_state(%s)\n", state->name);
++
++	gf->current_state = state;
++
++	// 1. Apply any listed signals
++	for (i = 0; i < state->num_signals; i++) {
++		signal = &state->signals[i];
++
++		if (gf->debug)
++			dev_info(gf->dev, "  set %s %d->%d\n",
++				 (signal->type == SIGNAL_GPIO) ? "GF_OUT" :
++				 "GF_SOFT",
++				 signal->index, signal->value);
++		switch (signal->type) {
++		case SIGNAL_GPIO:
++			gpiod = gf->output_gpios->desc[signal->index];
++			gpiod_set_value_cansleep(gpiod, signal->value);
++			break;
++		case SIGNAL_SOFT:
++			soft = &gf->soft_gpios[signal->index];
++			gpio_fsm_set_soft(gf, signal->index, signal->value);
++			break;
++		}
++	}
++
++	// 2. Exit if successfully reached shutdown state
++	if (gf->shutting_down && state == state->shutdown_target) {
++		wake_up(&gf->shutdown_event);
++		return;
++	}
++
++	// 3. Schedule a timer callback if shutting down
++	if (state->shutdown_target) {
++		// Remember the absolute shutdown time in case remove is called
++		// at a later time.
++		gf->shutdown_jiffies =
++			jiffies + msecs_to_jiffies(state->shutdown_ms);
++
++		if (gf->shutting_down) {
++			gf->delay_jiffies = gf->shutdown_jiffies;
++			gf->delay_target_state = state->shutdown_target;
++			gf->delay_ms = state->shutdown_ms;
++			mod_timer(&gf->timer, gf->delay_jiffies);
++		}
++	}
++
++	// During shutdown, skip everything else
++	if (gf->shutting_down)
++		return;
++
++	// Otherwise record what the shutdown time would be
++	gf->shutdown_jiffies = jiffies + msecs_to_jiffies(state->shutdown_ms);
++
++	// 4. Check soft inputs for transitions to take
++	for (i = 0; i < state->num_soft_events; i++) {
++		event = &state->soft_events[i];
++		if (gf->soft_gpios[event->index].value == event->value) {
++			if (gf->debug)
++				dev_info(gf->dev,
++					 "GF_SOFT %d=%d -> %s\n", event->index,
++					 event->value, event->target->name);
++			gpio_fsm_go_to_state(gf, event->target);
++			return;
++		}
++	}
++
++	// 5. Check GPIOs for transitions to take, enabling the IRQs
++	for (i = 0; i < state->num_gpio_events; i++) {
++		event = &state->gpio_events[i];
++		inp_state = &gf->input_gpio_states[event->index];
++		inp_state->target = event->target;
++		inp_state->value = event->value;
++		inp_state->enabled = true;
++
++		value = gpiod_get_value(gf->input_gpios->desc[event->index]);
++
++		// Clear stale event state
++		disable_irq(inp_state->irq);
++
++		irq_set_irq_type(inp_state->irq,
++				 (inp_state->value ^ inp_state->active_low) ?
++				 IRQF_TRIGGER_RISING : IRQF_TRIGGER_FALLING);
++		enable_irq(inp_state->irq);
++
++		if (value == event->value && inp_state->target) {
++			if (gf->debug)
++				dev_info(gf->dev,
++					 "GF_IN %d=%d -> %s\n", event->index,
++					 event->value, event->target->name);
++			gpio_fsm_go_to_state(gf, event->target);
++			return;
++		}
++	}
++
++	// 6. Schedule a timer callback if delay_target
++	if (state->delay_target) {
++		gf->delay_target_state = state->delay_target;
++		gf->delay_jiffies = jiffies +
++			msecs_to_jiffies(state->delay_ms);
++		gf->delay_ms = state->delay_ms;
++		mod_timer(&gf->timer, gf->delay_jiffies);
++	}
++}
++
++static void gpio_fsm_work(struct work_struct *work)
++{
++	struct input_gpio_state *inp_state;
++	struct fsm_state *new_state;
++	struct fsm_state *state;
++	struct gpio_event *gp_ev;
++	struct gpio_fsm *gf;
++	int i;
++
++	gf = container_of(work, struct gpio_fsm, work);
++	spin_lock(&gf->spinlock);
++	state = gf->current_state;
++	new_state = gf->next_state;
++	if (!new_state)
++		new_state = gf->delay_target_state;
++	gf->next_state = NULL;
++	gf->delay_target_state = NULL;
++	spin_unlock(&gf->spinlock);
++
++	if (state) {
++		/* Disable any enabled GPIO IRQs */
++		for (i = 0; i < state->num_gpio_events; i++) {
++			gp_ev = &state->gpio_events[i];
++			inp_state = &gf->input_gpio_states[gp_ev->index];
++			if (inp_state->enabled) {
++				inp_state->enabled = false;
++				irq_set_irq_type(inp_state->irq,
++						 IRQF_TRIGGER_NONE);
++			}
++		}
++	}
++
++	if (new_state)
++		gpio_fsm_enter_state(gf, new_state);
++}
++
++static irqreturn_t gpio_fsm_gpio_irq_handler(int irq, void *dev_id)
++{
++	struct input_gpio_state *inp_state = dev_id;
++	struct gpio_fsm *gf = inp_state->gf;
++	struct fsm_state *target;
++
++	target = inp_state->target;
++	if (!target)
++		return IRQ_NONE;
++
++	/* If the IRQ has fired then the desired state _must_ have occurred */
++	inp_state->enabled = false;
++	irq_set_irq_type(inp_state->irq, IRQF_TRIGGER_NONE);
++	if (gf->debug)
++		dev_info(gf->dev, "GF_IN %d->%d -> %s\n",
++			 inp_state->index, inp_state->value, target->name);
++	gpio_fsm_go_to_state(gf, target);
++	return IRQ_HANDLED;
++}
++
++static void gpio_fsm_timer(struct timer_list *timer)
++{
++	struct gpio_fsm *gf = container_of(timer, struct gpio_fsm, timer);
++	struct fsm_state *target;
++
++	target = gf->delay_target_state;
++	if (!target)
++		return;
++
++	if (gf->debug)
++		dev_info(gf->dev, "GF_DELAY %d -> %s\n", gf->delay_ms,
++			 target->name);
++
++	gpio_fsm_go_to_state(gf, target);
++}
++
++int gpio_fsm_parse_signals(struct gpio_fsm *gf, struct fsm_state *state,
++			     struct property *prop)
++{
++	const __be32 *cells = prop->value;
++	struct output_signal *signal;
++	u32 io;
++	u32 type;
++	u32 index;
++	u32 value;
++	int ret = 0;
++	int i;
++
++	if (prop->length % 8) {
++		dev_err(gf->dev, "malformed set in state %s\n",
++			state->name);
++		return -EINVAL;
++	}
++
++	state->num_signals = prop->length/8;
++	state->signals = devm_kcalloc(gf->dev, state->num_signals,
++				      sizeof(struct output_signal),
++				      GFP_KERNEL);
++	for (i = 0; i < state->num_signals; i++) {
++		signal = &state->signals[i];
++		io = be32_to_cpu(cells[0]);
++		type = GF_IO_TYPE(io);
++		index = GF_IO_INDEX(io);
++		value = be32_to_cpu(cells[1]);
++
++		if (type != GF_OUT && type != GF_SOFT) {
++			dev_err(gf->dev,
++				"invalid set type %d in state %s\n",
++				type, state->name);
++			ret = -EINVAL;
++			break;
++		}
++		if (type == GF_OUT && index >= gf->num_output_gpios) {
++			dev_err(gf->dev,
++				"invalid GF_OUT number %d in state %s\n",
++				index, state->name);
++			ret = -EINVAL;
++			break;
++		}
++		if (type == GF_SOFT && index >= gf->num_soft_gpios) {
++			dev_err(gf->dev,
++				"invalid GF_SOFT number %d in state %s\n",
++				index, state->name);
++			ret = -EINVAL;
++			break;
++		}
++		if (value != 0 && value != 1) {
++			dev_err(gf->dev,
++				"invalid set value %d in state %s\n",
++				value, state->name);
++			ret = -EINVAL;
++			break;
++		}
++		signal->type = (type == GF_OUT) ? SIGNAL_GPIO : SIGNAL_SOFT;
++		signal->index = index;
++		signal->value = value;
++		cells += 2;
++	}
++
++	return ret;
++}
++
++struct gpio_event *new_event(struct gpio_event **events, int *num_events)
++{
++	int num = ++(*num_events);
++	*events = krealloc(*events, num * sizeof(struct gpio_event),
++			   GFP_KERNEL);
++	return *events ? *events + (num - 1) : NULL;
++}
++
++int gpio_fsm_parse_events(struct gpio_fsm *gf, struct fsm_state *state,
++			    struct property *prop)
++{
++	const __be32 *cells = prop->value;
++	struct symtab_entry *sym;
++	int num_cells;
++	int ret = 0;
++	int i;
++
++	if (prop->length % 8) {
++		dev_err(gf->dev,
++			"malformed transitions from state %s to state %s\n",
++			state->name, prop->name);
++		return -EINVAL;
++	}
++
++	sym = get_symbol(&gf->symtab, prop->name);
++	num_cells = prop->length / 4;
++	i = 0;
++	while (i < num_cells) {
++		struct gpio_event *gp_ev;
++		u32 event, param;
++		u32 index;
++
++		event = be32_to_cpu(cells[i++]);
++		param = be32_to_cpu(cells[i++]);
++		index = GF_IO_INDEX(event);
++
++		switch (GF_IO_TYPE(event)) {
++		case GF_IN:
++			if (index >= gf->num_input_gpios) {
++				dev_err(gf->dev,
++					"invalid GF_IN %d in transitions from state %s to state %s\n",
++					index, state->name, prop->name);
++				return -EINVAL;
++			}
++			if (param > 1) {
++				dev_err(gf->dev,
++					"invalid GF_IN value %d in transitions from state %s to state %s\n",
++					param, state->name, prop->name);
++				return -EINVAL;
++			}
++			gp_ev = new_event(&state->gpio_events,
++					  &state->num_gpio_events);
++			if (!gp_ev)
++				return -ENOMEM;
++			gp_ev->index = index;
++			gp_ev->value = param;
++			gp_ev->target = (struct fsm_state *)sym;
++			break;
++
++		case GF_SOFT:
++			if (index >= gf->num_soft_gpios) {
++				dev_err(gf->dev,
++					"invalid GF_SOFT %d in transitions from state %s to state %s\n",
++					index, state->name, prop->name);
++				return -EINVAL;
++			}
++			if (param > 1) {
++				dev_err(gf->dev,
++					"invalid GF_SOFT value %d in transitions from state %s to state %s\n",
++					param, state->name, prop->name);
++				return -EINVAL;
++			}
++			gp_ev = new_event(&state->soft_events,
++					  &state->num_soft_events);
++			if (!gp_ev)
++				return -ENOMEM;
++			gp_ev->index = index;
++			gp_ev->value = param;
++			gp_ev->target = (struct fsm_state *)sym;
++			break;
++
++		case GF_DELAY:
++			if (state->delay_target) {
++				dev_err(gf->dev,
++					"state %s has multiple GF_DELAYs\n",
++					state->name);
++				return -EINVAL;
++			}
++			state->delay_target = (struct fsm_state *)sym;
++			state->delay_ms = param;
++			break;
++
++		case GF_SHUTDOWN:
++			if (state->shutdown_target == state) {
++				dev_err(gf->dev,
++					"shutdown state %s has GF_SHUTDOWN\n",
++					state->name);
++				return -EINVAL;
++			} else if (state->shutdown_target) {
++				dev_err(gf->dev,
++					"state %s has multiple GF_SHUTDOWNs\n",
++					state->name);
++				return -EINVAL;
++			}
++			state->shutdown_target =
++				(struct fsm_state *)sym;
++			state->shutdown_ms = param;
++			break;
++
++		default:
++			dev_err(gf->dev,
++				"invalid event %08x in transitions from state %s to state %s\n",
++				event, state->name, prop->name);
++			return -EINVAL;
++		}
++	}
++	if (i != num_cells) {
++		dev_err(gf->dev,
++			"malformed transitions from state %s to state %s\n",
++			state->name, prop->name);
++		return -EINVAL;
++	}
++
++	return ret;
++}
++
++int gpio_fsm_parse_state(struct gpio_fsm *gf,
++			   struct fsm_state *state,
++			   struct device_node *np)
++{
++	struct symtab_entry *sym;
++	struct property *prop;
++	int ret;
++
++	state->name = np->name;
++	ret = add_symbol(&gf->symtab, np->name, state);
++	if (ret) {
++		switch (ret) {
++		case -EINVAL:
++			dev_err(gf->dev, "'%s' is not a valid state name\n",
++				np->name);
++			break;
++		case -EEXIST:
++			dev_err(gf->dev, "state %s already defined\n",
++				np->name);
++			break;
++		default:
++			dev_err(gf->dev, "error %d adding state %s symbol\n",
++				ret, np->name);
++			break;
++		}
++		return ret;
++	}
++
++	for_each_property_of_node(np, prop) {
++		sym = get_symbol(&gf->symtab, prop->name);
++		if (!sym) {
++			ret = -ENOMEM;
++			break;
++		}
++
++		switch ((uintptr_t)sym->value) {
++		case SYM_SET:
++			ret = gpio_fsm_parse_signals(gf, state, prop);
++			break;
++		case SYM_START:
++			if (gf->start_state) {
++				dev_err(gf->dev, "multiple start states\n");
++				ret = -EINVAL;
++			} else {
++				gf->start_state = state;
++			}
++			break;
++		case SYM_SHUTDOWN:
++			state->shutdown_target = state;
++			gf->shutdown_state = state;
++			break;
++		case SYM_NAME:
++			/* Ignore */
++			break;
++		default:
++			/* A set of transition events to this state */
++			ret = gpio_fsm_parse_events(gf, state, prop);
++			break;
++		}
++	}
++
++	return ret;
++}
++
++static void dump_all(struct gpio_fsm *gf)
++{
++	int i, j;
++
++	dev_info(gf->dev, "Input GPIOs:\n");
++	for (i = 0; i < gf->num_input_gpios; i++)
++		dev_info(gf->dev, "  %d: %p\n", i,
++			 gf->input_gpios->desc[i]);
++
++	dev_info(gf->dev, "Output GPIOs:\n");
++	for (i = 0; i < gf->num_output_gpios; i++)
++		dev_info(gf->dev, "  %d: %p\n", i,
++			 gf->output_gpios->desc[i]);
++
++	dev_info(gf->dev, "Soft GPIOs:\n");
++	for (i = 0; i < gf->num_soft_gpios; i++)
++		dev_info(gf->dev, "  %d: %s %d\n", i,
++			 (gf->soft_gpios[i].dir == GPIOF_DIR_IN) ? "IN" : "OUT",
++			 gf->soft_gpios[i].value);
++
++	dev_info(gf->dev, "Start state: %s\n",
++		 gf->start_state ? gf->start_state->name : "-");
++
++	dev_info(gf->dev, "Shutdown timeout: %d ms\n",
++		 gf->shutdown_timeout_ms);
++
++	for (i = 0; i < gf->num_states; i++) {
++		struct fsm_state *state = &gf->states[i];
++
++		dev_info(gf->dev, "State %s:\n", state->name);
++
++		if (state->shutdown_target == state)
++			dev_info(gf->dev, "  Shutdown state\n");
++
++		dev_info(gf->dev, "  Signals:\n");
++		for (j = 0; j < state->num_signals; j++) {
++			struct output_signal *signal = &state->signals[j];
++
++			dev_info(gf->dev, "    %d: %s %d=%d\n", j,
++				 (signal->type == SIGNAL_GPIO) ? "GPIO" :
++								 "SOFT",
++				 signal->index, signal->value);
++		}
++
++		dev_info(gf->dev, "  GPIO events:\n");
++		for (j = 0; j < state->num_gpio_events; j++) {
++			struct gpio_event *event = &state->gpio_events[j];
++
++			dev_info(gf->dev, "    %d: %d=%d -> %s\n", j,
++				 event->index, event->value,
++				 event->target->name);
++		}
++
++		dev_info(gf->dev, "  Soft events:\n");
++		for (j = 0; j < state->num_soft_events; j++) {
++			struct gpio_event *event = &state->soft_events[j];
++
++			dev_info(gf->dev, "    %d: %d=%d -> %s\n", j,
++				 event->index, event->value,
++				 event->target->name);
++		}
++
++		if (state->delay_target)
++			dev_info(gf->dev, "  Delay: %d ms -> %s\n",
++				 state->delay_ms, state->delay_target->name);
++
++		if (state->shutdown_target && state->shutdown_target != state)
++			dev_info(gf->dev, "  Shutdown: %d ms -> %s\n",
++				 state->shutdown_ms,
++				 state->shutdown_target->name);
++	}
++	dev_info(gf->dev, "\n");
++}
++
++static int resolve_sym_to_state(struct gpio_fsm *gf, struct fsm_state **pstate)
++{
++	struct symtab_entry *sym = (struct symtab_entry *)*pstate;
++
++	if (!sym)
++		return -ENOMEM;
++
++	*pstate = sym->value;
++
++	if (!*pstate) {
++		dev_err(gf->dev, "state %s not defined\n",
++			sym->name);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++
++/*
++ * /sys/class/gpio-fsm/<fsm-name>/
++ *   /state ... the current state
++ */
++
++static ssize_t state_show(struct device *dev,
++			  struct device_attribute *attr, char *buf)
++{
++	const struct gpio_fsm *gf = dev_get_drvdata(dev);
++
++	return sprintf(buf, "%s\n", gf->current_state->name);
++}
++static DEVICE_ATTR_RO(state);
++
++static ssize_t delay_state_show(struct device *dev,
++			  struct device_attribute *attr, char *buf)
++{
++	const struct gpio_fsm *gf = dev_get_drvdata(dev);
++
++	return sprintf(buf, "%s\n",
++		       gf->delay_target_state ? gf->delay_target_state->name :
++		       "-");
++}
++
++static DEVICE_ATTR_RO(delay_state);
++
++static ssize_t delay_ms_show(struct device *dev,
++			     struct device_attribute *attr, char *buf)
++{
++	const struct gpio_fsm *gf = dev_get_drvdata(dev);
++	int jiffies_left;
++
++	jiffies_left = max((int)(gf->delay_jiffies - jiffies), 0);
++	return sprintf(buf,
++		       gf->delay_target_state ? "%u\n" : "-\n",
++		       jiffies_to_msecs(jiffies_left));
++}
++static DEVICE_ATTR_RO(delay_ms);
++
++static struct attribute *gpio_fsm_attrs[] = {
++	&dev_attr_state.attr,
++	&dev_attr_delay_state.attr,
++	&dev_attr_delay_ms.attr,
++	NULL,
++};
++
++static const struct attribute_group gpio_fsm_group = {
++	.attrs = gpio_fsm_attrs,
++	//.is_visible = gpio_is_visible,
++};
++
++static const struct attribute_group *gpio_fsm_groups[] = {
++	&gpio_fsm_group,
++	NULL
++};
++
++static struct attribute *gpio_fsm_class_attrs[] = {
++	// There are no top-level attributes
++	NULL,
++};
++ATTRIBUTE_GROUPS(gpio_fsm_class);
++
++static struct class gpio_fsm_class = {
++	.name =		MODULE_NAME,
++	.owner =	THIS_MODULE,
++
++	.class_groups = gpio_fsm_class_groups,
++};
++
++static int gpio_fsm_probe(struct platform_device *pdev)
++{
++	struct input_gpio_state *inp_state;
++	struct device *dev = &pdev->dev;
++	struct device *sysfs_dev;
++	struct device_node *np = dev->of_node;
++	struct device_node *cp;
++	struct gpio_fsm *gf;
++	u32 debug = 0;
++	int num_states;
++	u32 num_soft_gpios;
++	int ret;
++	int i;
++	static const char *const reserved_symbols[] = {
++		[SYM_NAME] = "name",
++		[SYM_SET] = "set",
++		[SYM_START] = "start_state",
++		[SYM_SHUTDOWN] = "shutdown_state",
++	};
++
++	if (of_property_read_u32(np, "num-swgpios", &num_soft_gpios) &&
++	    of_property_read_u32(np, "num-soft-gpios", &num_soft_gpios)) {
++		dev_err(dev, "missing 'num-swgpios' property\n");
++		return -EINVAL;
++	}
++
++	of_property_read_u32(np, "debug", &debug);
++
++	gf = devm_kzalloc(dev, sizeof(*gf), GFP_KERNEL);
++	if (!gf)
++		return -ENOMEM;
++
++	gf->dev = dev;
++	gf->debug = debug;
++
++	if (of_property_read_u32(np, "shutdown-timeout-ms",
++				 &gf->shutdown_timeout_ms))
++		gf->shutdown_timeout_ms = 5000;
++
++	gf->num_soft_gpios = num_soft_gpios;
++	gf->soft_gpios = devm_kcalloc(dev, num_soft_gpios,
++				      sizeof(struct soft_gpio), GFP_KERNEL);
++	if (!gf->soft_gpios)
++		return -ENOMEM;
++	for (i = 0; i < num_soft_gpios; i++) {
++		struct soft_gpio *sg = &gf->soft_gpios[i];
++
++		sg->dir = GPIOF_DIR_IN;
++		sg->value = 0;
++	}
++
++	gf->input_gpios = devm_gpiod_get_array_optional(dev, "input", GPIOD_IN);
++	if (IS_ERR(gf->input_gpios)) {
++		ret = PTR_ERR(gf->input_gpios);
++		dev_err(dev, "failed to get input gpios from DT - %d\n", ret);
++		return ret;
++	}
++	gf->num_input_gpios = (gf->input_gpios ? gf->input_gpios->ndescs : 0);
++
++	gf->input_gpio_states = devm_kcalloc(dev, gf->num_input_gpios,
++					     sizeof(struct input_gpio_state),
++					     GFP_KERNEL);
++	if (!gf->input_gpio_states)
++		return -ENOMEM;
++	for (i = 0; i < gf->num_input_gpios; i++) {
++		inp_state = &gf->input_gpio_states[i];
++		inp_state->desc = gf->input_gpios->desc[i];
++		inp_state->gf = gf;
++		inp_state->index = i;
++		inp_state->irq = gpiod_to_irq(inp_state->desc);
++		inp_state->active_low = gpiod_is_active_low(inp_state->desc);
++		if (inp_state->irq >= 0)
++			ret = devm_request_irq(gf->dev, inp_state->irq,
++					       gpio_fsm_gpio_irq_handler,
++					       IRQF_TRIGGER_NONE,
++					       dev_name(dev),
++					       inp_state);
++		else
++			ret = inp_state->irq;
++
++		if (ret) {
++			dev_err(dev,
++				"failed to get IRQ for input gpio - %d\n",
++				ret);
++			return ret;
++		}
++	}
++
++	gf->output_gpios = devm_gpiod_get_array_optional(dev, "output",
++							 GPIOD_OUT_LOW);
++	if (IS_ERR(gf->output_gpios)) {
++		ret = PTR_ERR(gf->output_gpios);
++		dev_err(dev, "failed to get output gpios from DT - %d\n", ret);
++		return ret;
++	}
++	gf->num_output_gpios = (gf->output_gpios ? gf->output_gpios->ndescs :
++				0);
++
++	num_states = of_get_child_count(np);
++	if (!num_states) {
++		dev_err(dev, "no states declared\n");
++		return -EINVAL;
++	}
++	gf->states = devm_kcalloc(dev, num_states,
++				  sizeof(struct fsm_state), GFP_KERNEL);
++	if (!gf->states)
++		return -ENOMEM;
++
++	// add reserved words to the symbol table
++	for (i = 0; i < ARRAY_SIZE(reserved_symbols); i++) {
++		if (reserved_symbols[i])
++			add_symbol(&gf->symtab, reserved_symbols[i],
++				   (void *)(uintptr_t)i);
++	}
++
++	// parse the state
++	for_each_child_of_node(np, cp) {
++		struct fsm_state *state = &gf->states[gf->num_states];
++
++		ret = gpio_fsm_parse_state(gf, state, cp);
++		if (ret)
++			return ret;
++		gf->num_states++;
++	}
++
++	if (!gf->start_state) {
++		dev_err(gf->dev, "no start state defined\n");
++		return -EINVAL;
++	}
++
++	// resolve symbol pointers into state pointers
++	for (i = 0; !ret && i < gf->num_states; i++) {
++		struct fsm_state *state = &gf->states[i];
++		int j;
++
++		for (j = 0; !ret && j < state->num_gpio_events; j++) {
++			struct gpio_event *ev = &state->gpio_events[j];
++
++			ret = resolve_sym_to_state(gf, &ev->target);
++		}
++
++		for (j = 0; !ret && j < state->num_soft_events; j++) {
++			struct gpio_event *ev = &state->soft_events[j];
++
++			ret = resolve_sym_to_state(gf, &ev->target);
++		}
++
++		if (!ret) {
++			resolve_sym_to_state(gf, &state->delay_target);
++			if (state->shutdown_target != state)
++				resolve_sym_to_state(gf,
++						     &state->shutdown_target);
++		}
++	}
++
++	if (!ret && gf->debug > 1)
++		dump_all(gf);
++
++	free_symbols(&gf->symtab);
++
++	if (ret)
++		return ret;
++
++	gf->gc.parent = dev;
++	gf->gc.label = np->name;
++	gf->gc.owner = THIS_MODULE;
++	gf->gc.of_node = np;
++	gf->gc.base = -1;
++	gf->gc.ngpio = num_soft_gpios;
++
++	gf->gc.get_direction = gpio_fsm_get_direction;
++	gf->gc.direction_input = gpio_fsm_direction_input;
++	gf->gc.direction_output = gpio_fsm_direction_output;
++	gf->gc.get = gpio_fsm_get;
++	gf->gc.set = gpio_fsm_set;
++	gf->gc.can_sleep = true;
++	spin_lock_init(&gf->spinlock);
++	INIT_WORK(&gf->work, gpio_fsm_work);
++	timer_setup(&gf->timer, gpio_fsm_timer, 0);
++	init_waitqueue_head(&gf->shutdown_event);
++
++	platform_set_drvdata(pdev, gf);
++
++	sysfs_dev = device_create_with_groups(&gpio_fsm_class, dev,
++					      MKDEV(0, 0), gf,
++					      gpio_fsm_groups,
++					      "%s", np->name);
++	if (IS_ERR(sysfs_dev))
++		dev_err(gf->dev, "Error creating sysfs entry\n");
++
++	if (gf->debug)
++		dev_info(gf->dev, "Start -> %s\n", gf->start_state->name);
++
++	gpio_fsm_go_to_state(gf, gf->start_state);
++
++	return devm_gpiochip_add_data(dev, &gf->gc, gf);
++}
++
++static int gpio_fsm_remove(struct platform_device *pdev)
++{
++	struct gpio_fsm *gf = platform_get_drvdata(pdev);
++	int i;
++
++	if (gf->shutdown_state) {
++		if (gf->debug)
++			dev_info(gf->dev, "Shutting down...\n");
++
++		spin_lock(&gf->spinlock);
++		gf->shutting_down = true;
++		if (gf->current_state->shutdown_target &&
++		    gf->current_state->shutdown_target != gf->current_state) {
++			gf->delay_target_state =
++				gf->current_state->shutdown_target;
++			mod_timer(&gf->timer, gf->shutdown_jiffies);
++		}
++		spin_unlock(&gf->spinlock);
++
++		wait_event_timeout(gf->shutdown_event,
++				   gf->current_state->shutdown_target ==
++				   gf->current_state,
++				   msecs_to_jiffies(gf->shutdown_timeout_ms));
++		/* On failure to reach a shutdown state, jump to one */
++		if (gf->current_state->shutdown_target != gf->current_state)
++			gpio_fsm_enter_state(gf, gf->shutdown_state);
++	}
++	cancel_work_sync(&gf->work);
++	del_timer_sync(&gf->timer);
++
++	/* Events aren't allocated from managed storage */
++	for (i = 0; i < gf->num_states; i++) {
++		kfree(gf->states[i].gpio_events);
++		kfree(gf->states[i].soft_events);
++	}
++	if (gf->debug)
++		dev_info(gf->dev, "Exiting\n");
++
++	return 0;
++}
++
++static void gpio_fsm_shutdown(struct platform_device *pdev)
++{
++	gpio_fsm_remove(pdev);
++}
++
++static const struct of_device_id gpio_fsm_ids[] = {
++	{ .compatible = "rpi,gpio-fsm" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, gpio_fsm_ids);
++
++static struct platform_driver gpio_fsm_driver = {
++	.driver	= {
++		.name		= MODULE_NAME,
++		.of_match_table	= of_match_ptr(gpio_fsm_ids),
++	},
++	.probe = gpio_fsm_probe,
++	.remove = gpio_fsm_remove,
++	.shutdown = gpio_fsm_shutdown,
++};
++
++static int gpio_fsm_init(void)
++{
++	int ret;
++
++	ret = class_register(&gpio_fsm_class);
++	if (ret)
++		return ret;
++
++	ret = platform_driver_register(&gpio_fsm_driver);
++	if (ret)
++		class_unregister(&gpio_fsm_class);
++
++	return ret;
++}
++module_init(gpio_fsm_init);
++
++static void gpio_fsm_exit(void)
++{
++	platform_driver_unregister(&gpio_fsm_driver);
++	class_unregister(&gpio_fsm_class);
++}
++module_exit(gpio_fsm_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Phil Elwell <phil@raspberrypi.com>");
++MODULE_DESCRIPTION("GPIO FSM driver");
++MODULE_ALIAS("platform:gpio-fsm");
+--- /dev/null
++++ b/include/dt-bindings/gpio/gpio-fsm.h
+@@ -0,0 +1,21 @@
++/* SPDX-License-Identifier: GPL-2.0+ */
++/*
++ * This header provides constants for binding rpi,gpio-fsm.
++ */
++
++#ifndef _DT_BINDINGS_GPIO_FSM_H
++#define _DT_BINDINGS_GPIO_FSM_H
++
++#define GF_IN       0
++#define GF_OUT      1
++#define GF_SOFT     2
++#define GF_DELAY    3
++#define GF_SHUTDOWN 4
++
++#define GF_IO(t, v) (((v) << 16) | ((t) & 0xffff))
++
++#define GF_IP(x)    GF_IO(GF_IN, (x))
++#define GF_OP(x)    GF_IO(GF_OUT, (x))
++#define GF_SW(x)    GF_IO(GF_SOFT, (x))
++
++#endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0305-staging-bcm2835-audio-Add-disable-headphones-flag.patch b/target/linux/bcm27xx/patches-5.15/950-0305-staging-bcm2835-audio-Add-disable-headphones-flag.patch
new file mode 100644
index 0000000000..ced894d2c5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0305-staging-bcm2835-audio-Add-disable-headphones-flag.patch
@@ -0,0 +1,34 @@
+From ff97c20aea1878155c3576516b689c6b3639d92a Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 26 Oct 2020 10:23:22 +0000
+Subject: [PATCH] staging: bcm2835-audio: Add disable-headphones flag
+
+Add a property to allow the headphone output to be disabled. Use an
+integer property rather than a boolean so that an overlay can clear it.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -381,11 +381,16 @@ static int snd_bcm2835_alsa_probe(struct
+ 	}
+ 
+ 	if (!enable_compat_alsa) {
++		// In this mode, enable analog output by default
++		u32 disable_headphones = 0;
++
+ 		if (!of_property_read_bool(dev->of_node, "brcm,disable-hdmi"))
+ 			set_hdmi_enables(dev);
+ 
+-		// In this mode, always enable analog output
+-		enable_headphones = true;
++		of_property_read_u32(dev->of_node,
++				     "brcm,disable-headphones",
++				     &disable_headphones);
++		enable_headphones = !disable_headphones;
+ 	} else {
+ 		enable_hdmi0 = enable_hdmi;
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0306-rpisense-fb-Set-pseudo_pallete-to-prevent-crash-on-f.patch b/target/linux/bcm27xx/patches-5.15/950-0306-rpisense-fb-Set-pseudo_pallete-to-prevent-crash-on-f.patch
new file mode 100644
index 0000000000..8b334a83f6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0306-rpisense-fb-Set-pseudo_pallete-to-prevent-crash-on-f.patch
@@ -0,0 +1,30 @@
+From bf3a33942d66722e9526392edb2f619466d2528e Mon Sep 17 00:00:00 2001
+From: Serge Schneider <serge@raspberrypi.com>
+Date: Mon, 26 Oct 2020 16:38:21 +0000
+Subject: [PATCH] rpisense-fb: Set pseudo_pallete to prevent crash on
+ fbcon takeover
+
+Signed-off-by: Serge Schneider <serge@raspberrypi.com>
+---
+ drivers/video/fbdev/rpisense-fb.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/video/fbdev/rpisense-fb.c
++++ b/drivers/video/fbdev/rpisense-fb.c
+@@ -52,6 +52,8 @@ static u8 gamma_low[32] = {0x00, 0x01, 0
+ 
+ static u8 gamma_user[32];
+ 
++static u32 pseudo_palette[16];
++
+ static struct rpisense_fb_param rpisense_fb_param = {
+ 	.vmem = NULL,
+ 	.vmemsize = 128,
+@@ -225,6 +227,7 @@ static int rpisense_fb_probe(struct plat
+ 	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+ 	info->screen_base = rpisense_fb_param.vmem;
+ 	info->screen_size = rpisense_fb_param.vmemsize;
++	info->pseudo_palette = pseudo_palette;
+ 
+ 	if (lowlight)
+ 		rpisense_fb_param.gamma = gamma_low;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0307-dwc_otg-Minimise-header-and-fix-build-warnings.patch b/target/linux/bcm27xx/patches-5.15/950-0307-dwc_otg-Minimise-header-and-fix-build-warnings.patch
new file mode 100644
index 0000000000..3bbfe347ee
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0307-dwc_otg-Minimise-header-and-fix-build-warnings.patch
@@ -0,0 +1,887 @@
+From dcc649e165ea83abb3fb441a54292fef6481a6c5 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 27 Oct 2020 09:59:49 +0000
+Subject: [PATCH] dwc_otg: Minimise header and fix build warnings
+
+Delete a large amount of unused declaration from "usb.h", some of which
+were causing build warnings, and get the module building cleanly.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/usb/host/dwc_common_port/usb.h       | 664 -------------------
+ drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c   |  10 +-
+ drivers/usb/host/dwc_otg/dwc_otg_hcd.c       |  23 +-
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c  |   3 +-
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c  |   8 +-
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c |   4 +-
+ drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c  |   2 +-
+ 7 files changed, 30 insertions(+), 684 deletions(-)
+
+--- a/drivers/usb/host/dwc_common_port/usb.h
++++ b/drivers/usb/host/dwc_common_port/usb.h
+@@ -55,12 +55,6 @@ typedef u_int8_t uByte;
+ typedef u_int8_t uWord[2];
+ typedef u_int8_t uDWord[4];
+ 
+-#define USETW2(w,h,l) ((w)[0] = (u_int8_t)(l), (w)[1] = (u_int8_t)(h))
+-#define UCONSTW(x)	{ (x) & 0xff, ((x) >> 8) & 0xff }
+-#define UCONSTDW(x)	{ (x) & 0xff, ((x) >> 8) & 0xff, \
+-			  ((x) >> 16) & 0xff, ((x) >> 24) & 0xff }
+-
+-#if 1
+ #define UGETW(w) ((w)[0] | ((w)[1] << 8))
+ #define USETW(w,v) ((w)[0] = (u_int8_t)(v), (w)[1] = (u_int8_t)((v) >> 8))
+ #define UGETDW(w) ((w)[0] | ((w)[1] << 8) | ((w)[2] << 16) | ((w)[3] << 24))
+@@ -68,31 +62,6 @@ typedef u_int8_t uDWord[4];
+ 		     (w)[1] = (u_int8_t)((v) >> 8), \
+ 		     (w)[2] = (u_int8_t)((v) >> 16), \
+ 		     (w)[3] = (u_int8_t)((v) >> 24))
+-#else
+-/*
+- * On little-endian machines that can handle unanliged accesses
+- * (e.g. i386) these macros can be replaced by the following.
+- */
+-#define UGETW(w) (*(u_int16_t *)(w))
+-#define USETW(w,v) (*(u_int16_t *)(w) = (v))
+-#define UGETDW(w) (*(u_int32_t *)(w))
+-#define USETDW(w,v) (*(u_int32_t *)(w) = (v))
+-#endif
+-
+-/*
+- * Macros for accessing UAS IU fields, which are big-endian
+- */
+-#define IUSETW2(w,h,l) ((w)[0] = (u_int8_t)(h), (w)[1] = (u_int8_t)(l))
+-#define IUCONSTW(x)	{ ((x) >> 8) & 0xff, (x) & 0xff }
+-#define IUCONSTDW(x)	{ ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \
+-			((x) >> 8) & 0xff, (x) & 0xff }
+-#define IUGETW(w) (((w)[0] << 8) | (w)[1])
+-#define IUSETW(w,v) ((w)[0] = (u_int8_t)((v) >> 8), (w)[1] = (u_int8_t)(v))
+-#define IUGETDW(w) (((w)[0] << 24) | ((w)[1] << 16) | ((w)[2] << 8) | (w)[3])
+-#define IUSETDW(w,v) ((w)[0] = (u_int8_t)((v) >> 24), \
+-		      (w)[1] = (u_int8_t)((v) >> 16), \
+-		      (w)[2] = (u_int8_t)((v) >> 8), \
+-		      (w)[3] = (u_int8_t)(v))
+ 
+ #define UPACKED __attribute__((__packed__))
+ 
+@@ -119,29 +88,6 @@ typedef struct {
+ #define UT_ENDPOINT		0x02
+ #define UT_OTHER		0x03
+ 
+-#define UT_READ_DEVICE		(UT_READ  | UT_STANDARD | UT_DEVICE)
+-#define UT_READ_INTERFACE	(UT_READ  | UT_STANDARD | UT_INTERFACE)
+-#define UT_READ_ENDPOINT	(UT_READ  | UT_STANDARD | UT_ENDPOINT)
+-#define UT_WRITE_DEVICE		(UT_WRITE | UT_STANDARD | UT_DEVICE)
+-#define UT_WRITE_INTERFACE	(UT_WRITE | UT_STANDARD | UT_INTERFACE)
+-#define UT_WRITE_ENDPOINT	(UT_WRITE | UT_STANDARD | UT_ENDPOINT)
+-#define UT_READ_CLASS_DEVICE	(UT_READ  | UT_CLASS | UT_DEVICE)
+-#define UT_READ_CLASS_INTERFACE	(UT_READ  | UT_CLASS | UT_INTERFACE)
+-#define UT_READ_CLASS_OTHER	(UT_READ  | UT_CLASS | UT_OTHER)
+-#define UT_READ_CLASS_ENDPOINT	(UT_READ  | UT_CLASS | UT_ENDPOINT)
+-#define UT_WRITE_CLASS_DEVICE	(UT_WRITE | UT_CLASS | UT_DEVICE)
+-#define UT_WRITE_CLASS_INTERFACE (UT_WRITE | UT_CLASS | UT_INTERFACE)
+-#define UT_WRITE_CLASS_OTHER	(UT_WRITE | UT_CLASS | UT_OTHER)
+-#define UT_WRITE_CLASS_ENDPOINT	(UT_WRITE | UT_CLASS | UT_ENDPOINT)
+-#define UT_READ_VENDOR_DEVICE	(UT_READ  | UT_VENDOR | UT_DEVICE)
+-#define UT_READ_VENDOR_INTERFACE (UT_READ  | UT_VENDOR | UT_INTERFACE)
+-#define UT_READ_VENDOR_OTHER	(UT_READ  | UT_VENDOR | UT_OTHER)
+-#define UT_READ_VENDOR_ENDPOINT	(UT_READ  | UT_VENDOR | UT_ENDPOINT)
+-#define UT_WRITE_VENDOR_DEVICE	(UT_WRITE | UT_VENDOR | UT_DEVICE)
+-#define UT_WRITE_VENDOR_INTERFACE (UT_WRITE | UT_VENDOR | UT_INTERFACE)
+-#define UT_WRITE_VENDOR_OTHER	(UT_WRITE | UT_VENDOR | UT_OTHER)
+-#define UT_WRITE_VENDOR_ENDPOINT (UT_WRITE | UT_VENDOR | UT_ENDPOINT)
+-
+ /* Requests */
+ #define UR_GET_STATUS		0x00
+ #define  USTAT_STANDARD_STATUS  0x00
+@@ -243,71 +189,6 @@ typedef struct {
+ typedef struct {
+ 	uByte		bLength;
+ 	uByte		bDescriptorType;
+-	uByte		bDescriptorSubtype;
+-} UPACKED usb_descriptor_t;
+-
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+-} UPACKED usb_descriptor_header_t;
+-
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+-	uWord		bcdUSB;
+-#define UD_USB_2_0		0x0200
+-#define UD_IS_USB2(d) (UGETW((d)->bcdUSB) >= UD_USB_2_0)
+-	uByte		bDeviceClass;
+-	uByte		bDeviceSubClass;
+-	uByte		bDeviceProtocol;
+-	uByte		bMaxPacketSize;
+-	/* The fields below are not part of the initial descriptor. */
+-	uWord		idVendor;
+-	uWord		idProduct;
+-	uWord		bcdDevice;
+-	uByte		iManufacturer;
+-	uByte		iProduct;
+-	uByte		iSerialNumber;
+-	uByte		bNumConfigurations;
+-} UPACKED usb_device_descriptor_t;
+-#define USB_DEVICE_DESCRIPTOR_SIZE 18
+-
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+-	uWord		wTotalLength;
+-	uByte		bNumInterface;
+-	uByte		bConfigurationValue;
+-	uByte		iConfiguration;
+-#define UC_ATT_ONE		(1 << 7)	/* must be set */
+-#define UC_ATT_SELFPOWER	(1 << 6)	/* self powered */
+-#define UC_ATT_WAKEUP		(1 << 5)	/* can wakeup */
+-#define UC_ATT_BATTERY		(1 << 4)	/* battery powered */
+-	uByte		bmAttributes;
+-#define UC_BUS_POWERED		0x80
+-#define UC_SELF_POWERED		0x40
+-#define UC_REMOTE_WAKEUP	0x20
+-	uByte		bMaxPower; /* max current in 2 mA units */
+-#define UC_POWER_FACTOR 2
+-} UPACKED usb_config_descriptor_t;
+-#define USB_CONFIG_DESCRIPTOR_SIZE 9
+-
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+-	uByte		bInterfaceNumber;
+-	uByte		bAlternateSetting;
+-	uByte		bNumEndpoints;
+-	uByte		bInterfaceClass;
+-	uByte		bInterfaceSubClass;
+-	uByte		bInterfaceProtocol;
+-	uByte		iInterface;
+-} UPACKED usb_interface_descriptor_t;
+-#define USB_INTERFACE_DESCRIPTOR_SIZE 9
+-
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+ 	uByte		bEndpointAddress;
+ #define UE_GET_DIR(a)	((a) & 0x80)
+ #define UE_SET_DIR(a,d)	((a) | (((d)&1) << 7))
+@@ -332,27 +213,6 @@ typedef struct {
+ } UPACKED usb_endpoint_descriptor_t;
+ #define USB_ENDPOINT_DESCRIPTOR_SIZE 7
+ 
+-typedef struct ss_endpoint_companion_descriptor {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte bMaxBurst;
+-#define USSE_GET_MAX_STREAMS(a)		((a) & 0x1f)
+-#define USSE_SET_MAX_STREAMS(a, b)	((a) | ((b) & 0x1f))
+-#define USSE_GET_MAX_PACKET_NUM(a)	((a) & 0x03)
+-#define USSE_SET_MAX_PACKET_NUM(a, b)	((a) | ((b) & 0x03))
+-	uByte bmAttributes;
+-	uWord wBytesPerInterval;
+-} UPACKED ss_endpoint_companion_descriptor_t;
+-#define USB_SS_ENDPOINT_COMPANION_DESCRIPTOR_SIZE 6
+-
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+-	uWord		bString[127];
+-} UPACKED usb_string_descriptor_t;
+-#define USB_MAX_STRING_LEN 128
+-#define USB_LANGUAGE_TABLE 0	/* # of the string language id table */
+-
+ /* Hub specific request */
+ #define UR_GET_BUS_STATE	0x02
+ #define UR_CLEAR_TT_BUFFER	0x08
+@@ -411,530 +271,6 @@ typedef struct {
+ } UPACKED usb_hub_descriptor_t;
+ #define USB_HUB_DESCRIPTOR_SIZE 9 /* includes deprecated PortPowerCtrlMask */
+ 
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+-	uWord		bcdUSB;
+-	uByte		bDeviceClass;
+-	uByte		bDeviceSubClass;
+-	uByte		bDeviceProtocol;
+-	uByte		bMaxPacketSize0;
+-	uByte		bNumConfigurations;
+-	uByte		bReserved;
+-} UPACKED usb_device_qualifier_t;
+-#define USB_DEVICE_QUALIFIER_SIZE 10
+-
+-typedef struct {
+-	uByte		bLength;
+-	uByte		bDescriptorType;
+-	uByte		bmAttributes;
+-#define UOTG_SRP	0x01
+-#define UOTG_HNP	0x02
+-} UPACKED usb_otg_descriptor_t;
+-
+-/* OTG feature selectors */
+-#define UOTG_B_HNP_ENABLE	3
+-#define UOTG_A_HNP_SUPPORT	4
+-#define UOTG_A_ALT_HNP_SUPPORT	5
+-
+-typedef struct {
+-	uWord		wStatus;
+-/* Device status flags */
+-#define UDS_SELF_POWERED		0x0001
+-#define UDS_REMOTE_WAKEUP		0x0002
+-/* Endpoint status flags */
+-#define UES_HALT			0x0001
+-} UPACKED usb_status_t;
+-
+-typedef struct {
+-	uWord		wHubStatus;
+-#define UHS_LOCAL_POWER			0x0001
+-#define UHS_OVER_CURRENT		0x0002
+-	uWord		wHubChange;
+-} UPACKED usb_hub_status_t;
+-
+-typedef struct {
+-	uWord		wPortStatus;
+-#define UPS_CURRENT_CONNECT_STATUS	0x0001
+-#define UPS_PORT_ENABLED		0x0002
+-#define UPS_SUSPEND			0x0004
+-#define UPS_OVERCURRENT_INDICATOR	0x0008
+-#define UPS_RESET			0x0010
+-#define UPS_PORT_POWER			0x0100
+-#define UPS_LOW_SPEED			0x0200
+-#define UPS_HIGH_SPEED			0x0400
+-#define UPS_PORT_TEST			0x0800
+-#define UPS_PORT_INDICATOR		0x1000
+-	uWord		wPortChange;
+-#define UPS_C_CONNECT_STATUS		0x0001
+-#define UPS_C_PORT_ENABLED		0x0002
+-#define UPS_C_SUSPEND			0x0004
+-#define UPS_C_OVERCURRENT_INDICATOR	0x0008
+-#define UPS_C_PORT_RESET		0x0010
+-} UPACKED usb_port_status_t;
+-
+-#ifdef _MSC_VER
+-#include <poppack.h>
+-#endif
+-
+-/* Device class codes */
+-#define UDCLASS_IN_INTERFACE	0x00
+-#define UDCLASS_COMM		0x02
+-#define UDCLASS_HUB		0x09
+-#define  UDSUBCLASS_HUB		0x00
+-#define  UDPROTO_FSHUB		0x00
+-#define  UDPROTO_HSHUBSTT	0x01
+-#define  UDPROTO_HSHUBMTT	0x02
+-#define UDCLASS_DIAGNOSTIC	0xdc
+-#define UDCLASS_WIRELESS	0xe0
+-#define  UDSUBCLASS_RF		0x01
+-#define   UDPROTO_BLUETOOTH	0x01
+-#define UDCLASS_VENDOR		0xff
+-
+-/* Interface class codes */
+-#define UICLASS_UNSPEC		0x00
+-
+-#define UICLASS_AUDIO		0x01
+-#define  UISUBCLASS_AUDIOCONTROL	1
+-#define  UISUBCLASS_AUDIOSTREAM		2
+-#define  UISUBCLASS_MIDISTREAM		3
+-
+-#define UICLASS_CDC		0x02 /* communication */
+-#define  UISUBCLASS_DIRECT_LINE_CONTROL_MODEL	1
+-#define  UISUBCLASS_ABSTRACT_CONTROL_MODEL	2
+-#define  UISUBCLASS_TELEPHONE_CONTROL_MODEL	3
+-#define  UISUBCLASS_MULTICHANNEL_CONTROL_MODEL	4
+-#define  UISUBCLASS_CAPI_CONTROLMODEL		5
+-#define  UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL 6
+-#define  UISUBCLASS_ATM_NETWORKING_CONTROL_MODEL 7
+-#define   UIPROTO_CDC_AT			1
+-
+-#define UICLASS_HID		0x03
+-#define  UISUBCLASS_BOOT	1
+-#define  UIPROTO_BOOT_KEYBOARD	1
+-
+-#define UICLASS_PHYSICAL	0x05
+-
+-#define UICLASS_IMAGE		0x06
+-
+-#define UICLASS_PRINTER		0x07
+-#define  UISUBCLASS_PRINTER	1
+-#define  UIPROTO_PRINTER_UNI	1
+-#define  UIPROTO_PRINTER_BI	2
+-#define  UIPROTO_PRINTER_1284	3
+-
+-#define UICLASS_MASS		0x08
+-#define  UISUBCLASS_RBC		1
+-#define  UISUBCLASS_SFF8020I	2
+-#define  UISUBCLASS_QIC157	3
+-#define  UISUBCLASS_UFI		4
+-#define  UISUBCLASS_SFF8070I	5
+-#define  UISUBCLASS_SCSI	6
+-#define  UIPROTO_MASS_CBI_I	0
+-#define  UIPROTO_MASS_CBI	1
+-#define  UIPROTO_MASS_BBB_OLD	2	/* Not in the spec anymore */
+-#define  UIPROTO_MASS_BBB	80	/* 'P' for the Iomega Zip drive */
+-
+-#define UICLASS_HUB		0x09
+-#define  UISUBCLASS_HUB		0
+-#define  UIPROTO_FSHUB		0
+-#define  UIPROTO_HSHUBSTT	0 /* Yes, same as previous */
+-#define  UIPROTO_HSHUBMTT	1
+-
+-#define UICLASS_CDC_DATA	0x0a
+-#define  UISUBCLASS_DATA		0
+-#define   UIPROTO_DATA_ISDNBRI		0x30    /* Physical iface */
+-#define   UIPROTO_DATA_HDLC		0x31    /* HDLC */
+-#define   UIPROTO_DATA_TRANSPARENT	0x32    /* Transparent */
+-#define   UIPROTO_DATA_Q921M		0x50    /* Management for Q921 */
+-#define   UIPROTO_DATA_Q921		0x51    /* Data for Q921 */
+-#define   UIPROTO_DATA_Q921TM		0x52    /* TEI multiplexer for Q921 */
+-#define   UIPROTO_DATA_V42BIS		0x90    /* Data compression */
+-#define   UIPROTO_DATA_Q931		0x91    /* Euro-ISDN */
+-#define   UIPROTO_DATA_V120		0x92    /* V.24 rate adaption */
+-#define   UIPROTO_DATA_CAPI		0x93    /* CAPI 2.0 commands */
+-#define   UIPROTO_DATA_HOST_BASED	0xfd    /* Host based driver */
+-#define   UIPROTO_DATA_PUF		0xfe    /* see Prot. Unit Func. Desc.*/
+-#define   UIPROTO_DATA_VENDOR		0xff    /* Vendor specific */
+-
+-#define UICLASS_SMARTCARD	0x0b
+-
+-/*#define UICLASS_FIRM_UPD	0x0c*/
+-
+-#define UICLASS_SECURITY	0x0d
+-
+-#define UICLASS_DIAGNOSTIC	0xdc
+-
+-#define UICLASS_WIRELESS	0xe0
+-#define  UISUBCLASS_RF			0x01
+-#define   UIPROTO_BLUETOOTH		0x01
+-
+-#define UICLASS_APPL_SPEC	0xfe
+-#define  UISUBCLASS_FIRMWARE_DOWNLOAD	1
+-#define  UISUBCLASS_IRDA		2
+-#define  UIPROTO_IRDA			0
+-
+-#define UICLASS_VENDOR		0xff
+-
+-#define USB_HUB_MAX_DEPTH 5
+-
+-/*
+- * Minimum time a device needs to be powered down to go through
+- * a power cycle.  XXX Are these time in the spec?
+- */
+-#define USB_POWER_DOWN_TIME	200 /* ms */
+-#define USB_PORT_POWER_DOWN_TIME	100 /* ms */
+-
+-#if 0
+-/* These are the values from the spec. */
+-#define USB_PORT_RESET_DELAY	10  /* ms */
+-#define USB_PORT_ROOT_RESET_DELAY 50  /* ms */
+-#define USB_PORT_RESET_RECOVERY	10  /* ms */
+-#define USB_PORT_POWERUP_DELAY	100 /* ms */
+-#define USB_SET_ADDRESS_SETTLE	2   /* ms */
+-#define USB_RESUME_DELAY	(20*5)  /* ms */
+-#define USB_RESUME_WAIT		10  /* ms */
+-#define USB_RESUME_RECOVERY	10  /* ms */
+-#define USB_EXTRA_POWER_UP_TIME	0   /* ms */
+-#else
+-/* Allow for marginal (i.e. non-conforming) devices. */
+-#define USB_PORT_RESET_DELAY	50  /* ms */
+-#define USB_PORT_ROOT_RESET_DELAY 250  /* ms */
+-#define USB_PORT_RESET_RECOVERY	250  /* ms */
+-#define USB_PORT_POWERUP_DELAY	300 /* ms */
+-#define USB_SET_ADDRESS_SETTLE	10  /* ms */
+-#define USB_RESUME_DELAY	(50*5)  /* ms */
+-#define USB_RESUME_WAIT		50  /* ms */
+-#define USB_RESUME_RECOVERY	50  /* ms */
+-#define USB_EXTRA_POWER_UP_TIME	20  /* ms */
+-#endif
+-
+-#define USB_MIN_POWER		100 /* mA */
+-#define USB_MAX_POWER		500 /* mA */
+-
+-#define USB_BUS_RESET_DELAY	100 /* ms XXX?*/
+-
+-#define USB_UNCONFIG_NO 0
+-#define USB_UNCONFIG_INDEX (-1)
+-
+-/*** ioctl() related stuff ***/
+-
+-struct usb_ctl_request {
+-	int	ucr_addr;
+-	usb_device_request_t ucr_request;
+-	void	*ucr_data;
+-	int	ucr_flags;
+-#define USBD_SHORT_XFER_OK	0x04	/* allow short reads */
+-	int	ucr_actlen;		/* actual length transferred */
+-};
+-
+-struct usb_alt_interface {
+-	int	uai_config_index;
+-	int	uai_interface_index;
+-	int	uai_alt_no;
+-};
+-
+-#define USB_CURRENT_CONFIG_INDEX (-1)
+-#define USB_CURRENT_ALT_INDEX (-1)
+-
+-struct usb_config_desc {
+-	int	ucd_config_index;
+-	usb_config_descriptor_t ucd_desc;
+-};
+-
+-struct usb_interface_desc {
+-	int	uid_config_index;
+-	int	uid_interface_index;
+-	int	uid_alt_index;
+-	usb_interface_descriptor_t uid_desc;
+-};
+-
+-struct usb_endpoint_desc {
+-	int	ued_config_index;
+-	int	ued_interface_index;
+-	int	ued_alt_index;
+-	int	ued_endpoint_index;
+-	usb_endpoint_descriptor_t ued_desc;
+-};
+-
+-struct usb_full_desc {
+-	int	ufd_config_index;
+-	u_int	ufd_size;
+-	u_char	*ufd_data;
+-};
+-
+-struct usb_string_desc {
+-	int	usd_string_index;
+-	int	usd_language_id;
+-	usb_string_descriptor_t usd_desc;
+-};
+-
+-struct usb_ctl_report_desc {
+-	int	ucrd_size;
+-	u_char	ucrd_data[1024];	/* filled data size will vary */
+-};
+-
+-typedef struct { u_int32_t cookie; } usb_event_cookie_t;
+-
+-#define USB_MAX_DEVNAMES 4
+-#define USB_MAX_DEVNAMELEN 16
+-struct usb_device_info {
+-	u_int8_t	udi_bus;
+-	u_int8_t	udi_addr;	/* device address */
+-	usb_event_cookie_t udi_cookie;
+-	char		udi_product[USB_MAX_STRING_LEN];
+-	char		udi_vendor[USB_MAX_STRING_LEN];
+-	char		udi_release[8];
+-	u_int16_t	udi_productNo;
+-	u_int16_t	udi_vendorNo;
+-	u_int16_t	udi_releaseNo;
+-	u_int8_t	udi_class;
+-	u_int8_t	udi_subclass;
+-	u_int8_t	udi_protocol;
+-	u_int8_t	udi_config;
+-	u_int8_t	udi_speed;
+-#define USB_SPEED_UNKNOWN	0
+-#define USB_SPEED_LOW		1
+-#define USB_SPEED_FULL		2
+-#define USB_SPEED_HIGH		3
+-#define USB_SPEED_VARIABLE	4
+-#define USB_SPEED_SUPER		5
+-	int		udi_power;	/* power consumption in mA, 0 if selfpowered */
+-	int		udi_nports;
+-	char		udi_devnames[USB_MAX_DEVNAMES][USB_MAX_DEVNAMELEN];
+-	u_int8_t	udi_ports[16];/* hub only: addresses of devices on ports */
+-#define USB_PORT_ENABLED 0xff
+-#define USB_PORT_SUSPENDED 0xfe
+-#define USB_PORT_POWERED 0xfd
+-#define USB_PORT_DISABLED 0xfc
+-};
+-
+-struct usb_ctl_report {
+-	int	ucr_report;
+-	u_char	ucr_data[1024];	/* filled data size will vary */
+-};
+-
+-struct usb_device_stats {
+-	u_long	uds_requests[4];	/* indexed by transfer type UE_* */
+-};
+-
+-#define WUSB_MIN_IE			0x80
+-#define WUSB_WCTA_IE			0x80
+-#define WUSB_WCONNECTACK_IE		0x81
+-#define WUSB_WHOSTINFO_IE		0x82
+-#define  WUHI_GET_CA(_bmAttributes_) ((_bmAttributes_) & 0x3)
+-#define   WUHI_CA_RECONN		0x00
+-#define   WUHI_CA_LIMITED		0x01
+-#define   WUHI_CA_ALL			0x03
+-#define  WUHI_GET_MLSI(_bmAttributes_) (((_bmAttributes_) & 0x38) >> 3)
+-#define WUSB_WCHCHANGEANNOUNCE_IE	0x83
+-#define WUSB_WDEV_DISCONNECT_IE		0x84
+-#define WUSB_WHOST_DISCONNECT_IE	0x85
+-#define WUSB_WRELEASE_CHANNEL_IE	0x86
+-#define WUSB_WWORK_IE			0x87
+-#define WUSB_WCHANNEL_STOP_IE		0x88
+-#define WUSB_WDEV_KEEPALIVE_IE		0x89
+-#define WUSB_WISOCH_DISCARD_IE		0x8A
+-#define WUSB_WRESETDEVICE_IE		0x8B
+-#define WUSB_WXMIT_PACKET_ADJUST_IE	0x8C
+-#define WUSB_MAX_IE			0x8C
+-
+-/* Device Notification Types */
+-
+-#define WUSB_DN_MIN			0x01
+-#define WUSB_DN_CONNECT			0x01
+-# define WUSB_DA_OLDCONN	0x00
+-# define WUSB_DA_NEWCONN	0x01
+-# define WUSB_DA_SELF_BEACON	0x02
+-# define WUSB_DA_DIR_BEACON	0x04
+-# define WUSB_DA_NO_BEACON	0x06
+-#define WUSB_DN_DISCONNECT		0x02
+-#define WUSB_DN_EPRDY			0x03
+-#define WUSB_DN_MASAVAILCHANGED		0x04
+-#define WUSB_DN_REMOTEWAKEUP		0x05
+-#define WUSB_DN_SLEEP			0x06
+-#define WUSB_DN_ALIVE			0x07
+-#define WUSB_DN_MAX			0x07
+-
+-#ifdef _MSC_VER
+-#include <pshpack1.h>
+-#endif
+-
+-/* WUSB Handshake Data.  Used during the SET/GET HANDSHAKE requests */
+-typedef struct wusb_hndshk_data {
+-	uByte bMessageNumber;
+-	uByte bStatus;
+-	uByte tTKID[3];
+-	uByte bReserved;
+-	uByte CDID[16];
+-	uByte Nonce[16];
+-	uByte MIC[8];
+-} UPACKED wusb_hndshk_data_t;
+-#define WUSB_HANDSHAKE_LEN_FOR_MIC	38
+-
+-/* WUSB Connection Context */
+-typedef struct wusb_conn_context {
+-	uByte CHID [16];
+-	uByte CDID [16];
+-	uByte CK [16];
+-} UPACKED wusb_conn_context_t;
+-
+-/* WUSB Security Descriptor */
+-typedef struct wusb_security_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uWord wTotalLength;
+-	uByte bNumEncryptionTypes;
+-} UPACKED wusb_security_desc_t;
+-
+-/* WUSB Encryption Type Descriptor */
+-typedef struct wusb_encrypt_type_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-
+-	uByte bEncryptionType;
+-#define WUETD_UNSECURE		0
+-#define WUETD_WIRED		1
+-#define WUETD_CCM_1		2
+-#define WUETD_RSA_1		3
+-
+-	uByte bEncryptionValue;
+-	uByte bAuthKeyIndex;
+-} UPACKED wusb_encrypt_type_desc_t;
+-
+-/* WUSB Key Descriptor */
+-typedef struct wusb_key_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte tTKID[3];
+-	uByte bReserved;
+-	uByte KeyData[1];	/* variable length */
+-} UPACKED wusb_key_desc_t;
+-
+-/* WUSB BOS Descriptor (Binary device Object Store) */
+-typedef struct wusb_bos_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uWord wTotalLength;
+-	uByte bNumDeviceCaps;
+-} UPACKED wusb_bos_desc_t;
+-
+-#define USB_DEVICE_CAPABILITY_20_EXTENSION	0x02
+-typedef struct usb_dev_cap_20_ext_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte bDevCapabilityType;
+-#define USB_20_EXT_LPM				0x02
+-	uDWord bmAttributes;
+-} UPACKED usb_dev_cap_20_ext_desc_t;
+-
+-#define USB_DEVICE_CAPABILITY_SS_USB		0x03
+-typedef struct usb_dev_cap_ss_usb {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte bDevCapabilityType;
+-#define USB_DC_SS_USB_LTM_CAPABLE		0x02
+-	uByte bmAttributes;
+-#define USB_DC_SS_USB_SPEED_SUPPORT_LOW		0x01
+-#define USB_DC_SS_USB_SPEED_SUPPORT_FULL	0x02
+-#define USB_DC_SS_USB_SPEED_SUPPORT_HIGH	0x04
+-#define USB_DC_SS_USB_SPEED_SUPPORT_SS		0x08
+-	uWord wSpeedsSupported;
+-	uByte bFunctionalitySupport;
+-	uByte bU1DevExitLat;
+-	uWord wU2DevExitLat;
+-} UPACKED usb_dev_cap_ss_usb_t;
+-
+-#define USB_DEVICE_CAPABILITY_CONTAINER_ID	0x04
+-typedef struct usb_dev_cap_container_id {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte bDevCapabilityType;
+-	uByte bReserved;
+-	uByte containerID[16];
+-} UPACKED usb_dev_cap_container_id_t;
+-
+-/* Device Capability Type Codes */
+-#define WUSB_DEVICE_CAPABILITY_WIRELESS_USB 0x01
+-
+-/* Device Capability Descriptor */
+-typedef struct wusb_dev_cap_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte bDevCapabilityType;
+-	uByte caps[1];	/* Variable length */
+-} UPACKED wusb_dev_cap_desc_t;
+-
+-/* Device Capability Descriptor */
+-typedef struct wusb_dev_cap_uwb_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte bDevCapabilityType;
+-	uByte bmAttributes;
+-	uWord wPHYRates;	/* Bitmap */
+-	uByte bmTFITXPowerInfo;
+-	uByte bmFFITXPowerInfo;
+-	uWord bmBandGroup;
+-	uByte bReserved;
+-} UPACKED wusb_dev_cap_uwb_desc_t;
+-
+-/* Wireless USB Endpoint Companion Descriptor */
+-typedef struct wusb_endpoint_companion_desc {
+-	uByte bLength;
+-	uByte bDescriptorType;
+-	uByte bMaxBurst;
+-	uByte bMaxSequence;
+-	uWord wMaxStreamDelay;
+-	uWord wOverTheAirPacketSize;
+-	uByte bOverTheAirInterval;
+-	uByte bmCompAttributes;
+-} UPACKED wusb_endpoint_companion_desc_t;
+-
+-/* Wireless USB Numeric Association M1 Data Structure */
+-typedef struct wusb_m1_data {
+-	uByte version;
+-	uWord langId;
+-	uByte deviceFriendlyNameLength;
+-	uByte sha_256_m3[32];
+-	uByte deviceFriendlyName[256];
+-} UPACKED wusb_m1_data_t;
+-
+-typedef struct wusb_m2_data {
+-	uByte version;
+-	uWord langId;
+-	uByte hostFriendlyNameLength;
+-	uByte pkh[384];
+-	uByte hostFriendlyName[256];
+-} UPACKED wusb_m2_data_t;
+-
+-typedef struct wusb_m3_data {
+-	uByte pkd[384];
+-	uByte nd;
+-} UPACKED wusb_m3_data_t;
+-
+-typedef struct wusb_m4_data {
+-	uDWord _attributeTypeIdAndLength_1;
+-	uWord  associationTypeId;
+-
+-	uDWord _attributeTypeIdAndLength_2;
+-	uWord  associationSubTypeId;
+-
+-	uDWord _attributeTypeIdAndLength_3;
+-	uDWord length;
+-
+-	uDWord _attributeTypeIdAndLength_4;
+-	uDWord associationStatus;
+-
+-	uDWord _attributeTypeIdAndLength_5;
+-	uByte  chid[16];
+-
+-	uDWord _attributeTypeIdAndLength_6;
+-	uByte  cdid[16];
+-
+-	uDWord _attributeTypeIdAndLength_7;
+-	uByte  bandGroups[2];
+-} UPACKED wusb_m4_data_t;
+-
+ #ifdef _MSC_VER
+ #include <poppack.h>
+ #endif
+--- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
+@@ -240,7 +240,8 @@ static int notrace fiq_increment_dma_buf
+ 	hcdma_data_t hcdma;
+ 	int i = st->channel[n].dma_info.index;
+ 	int len;
+-	struct fiq_dma_blob *blob = (struct fiq_dma_blob *) st->dma_base;
++	struct fiq_dma_blob *blob =
++		(struct fiq_dma_blob *)(uintptr_t)st->dma_base;
+ 
+ 	len = fiq_get_xfer_len(st, n);
+ 	fiq_print(FIQDBG_INT, st, "LEN: %03d", len);
+@@ -249,7 +250,7 @@ static int notrace fiq_increment_dma_buf
+ 	if (i > 6)
+ 		BUG();
+ 
+-	hcdma.d32 = (dma_addr_t) &blob->channel[n].index[i].buf[0];
++	hcdma.d32 = (u32)(uintptr_t)&blob->channel[n].index[i].buf[0];
+ 	FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
+ 	st->channel[n].dma_info.index = i;
+ 	return 0;
+@@ -289,7 +290,8 @@ static int notrace fiq_iso_out_advance(s
+ 	hcsplt_data_t hcsplt;
+ 	hctsiz_data_t hctsiz;
+ 	hcdma_data_t hcdma;
+-	struct fiq_dma_blob *blob = (struct fiq_dma_blob *) st->dma_base;
++	struct fiq_dma_blob *blob =
++		(struct fiq_dma_blob *)(uintptr_t)st->dma_base;
+ 	int last = 0;
+ 	int i = st->channel[n].dma_info.index;
+ 
+@@ -301,7 +303,7 @@ static int notrace fiq_iso_out_advance(s
+ 		last = 1;
+ 
+ 	/* New DMA address - address of bounce buffer referred to in index */
+-	hcdma.d32 = (dma_addr_t) blob->channel[n].index[i].buf;
++	hcdma.d32 = (u32)(uintptr_t)blob->channel[n].index[i].buf;
+ 	//hcdma.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA);
+ 	//hcdma.d32 += st->channel[n].dma_info.slot_len[i];
+ 	fiq_print(FIQDBG_INT, st, "LAST: %01d ", last);
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
+@@ -1270,7 +1270,8 @@ static void assign_and_init_hc(dwc_otg_h
+ 	hc->multi_count = 1;
+ 
+ 	if (hcd->core_if->dma_enable) {
+-		hc->xfer_buff = (uint8_t *) urb->dma + urb->actual_length;
++		hc->xfer_buff =
++		    (uint8_t *)(uintptr_t)urb->dma + urb->actual_length;
+ 
+ 		/* For non-dword aligned case */
+ 		if (((unsigned long)hc->xfer_buff & 0x3)
+@@ -1314,7 +1315,8 @@ static void assign_and_init_hc(dwc_otg_h
+ 			hc->ep_is_in = 0;
+ 			hc->data_pid_start = DWC_OTG_HC_PID_SETUP;
+ 			if (hcd->core_if->dma_enable) {
+-				hc->xfer_buff = (uint8_t *) urb->setup_dma;
++				hc->xfer_buff =
++					(uint8_t *)(uintptr_t)urb->setup_dma;
+ 			} else {
+ 				hc->xfer_buff = (uint8_t *) urb->setup_packet;
+ 			}
+@@ -1362,7 +1364,8 @@ static void assign_and_init_hc(dwc_otg_h
+ 
+ 			hc->xfer_len = 0;
+ 			if (hcd->core_if->dma_enable) {
+-				hc->xfer_buff = (uint8_t *) hcd->status_buf_dma;
++				hc->xfer_buff = (uint8_t *)
++					(uintptr_t)hcd->status_buf_dma;
+ 			} else {
+ 				hc->xfer_buff = (uint8_t *) hcd->status_buf;
+ 			}
+@@ -1390,7 +1393,7 @@ static void assign_and_init_hc(dwc_otg_h
+ 			frame_desc->status = 0;
+ 
+ 			if (hcd->core_if->dma_enable) {
+-				hc->xfer_buff = (uint8_t *) urb->dma;
++				hc->xfer_buff = (uint8_t *)(uintptr_t)urb->dma;
+ 			} else {
+ 				hc->xfer_buff = (uint8_t *) urb->buf;
+ 			}
+@@ -1571,8 +1574,10 @@ int fiq_fsm_setup_periodic_dma(dwc_otg_h
+ 		 * Pointer arithmetic on hcd->fiq_state->dma_base (a dma_addr_t)
+ 		 * to point it to the correct offset in the allocated buffers.
+ 		 */
+-		blob = (struct fiq_dma_blob *) hcd->fiq_state->dma_base;
+-		st->hcdma_copy.d32 = (dma_addr_t) blob->channel[hc->hc_num].index[0].buf;
++		blob = (struct fiq_dma_blob *)
++			(uintptr_t)hcd->fiq_state->dma_base;
++		st->hcdma_copy.d32 =(u32)(uintptr_t)
++			blob->channel[hc->hc_num].index[0].buf;
+ 
+ 		/* Calculate the max number of CSPLITS such that the FIQ can time out
+ 		 * a transaction if it fails.
+@@ -1627,8 +1632,10 @@ int fiq_fsm_setup_periodic_dma(dwc_otg_h
+ 			 * dma_addr_t) to point it to the correct offset in the
+ 			 * allocated buffers.
+ 			 */
+-			blob = (struct fiq_dma_blob *) hcd->fiq_state->dma_base;
+-			st->hcdma_copy.d32 = (dma_addr_t) blob->channel[hc->hc_num].index[0].buf;
++			blob = (struct fiq_dma_blob *)
++				(uintptr_t)hcd->fiq_state->dma_base;
++			st->hcdma_copy.d32 = (u32)(uintptr_t)
++				blob->channel[hc->hc_num].index[0].buf;
+ 
+ 			/* fixup xfersize to the actual packet size */
+ 			st->hctsiz_copy.b.pid = 0;
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_ddma.c
+@@ -620,7 +620,8 @@ static void init_non_isoc_dma_desc(dwc_o
+ 
+ 		if (n_desc) {
+ 			/* SG request - more than 1 QTDs */
+-			hc->xfer_buff = (uint8_t *)qtd->urb->dma + qtd->urb->actual_length;
++			hc->xfer_buff = (uint8_t *)(uintptr_t)qtd->urb->dma +
++					qtd->urb->actual_length;
+ 			hc->xfer_len = qtd->urb->length - qtd->urb->actual_length;
+ 		}
+ 
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
+@@ -1857,10 +1857,10 @@ static int32_t handle_hc_ahberr_intr(dwc
+ 	DWC_ERROR("  Max packet size: %d\n",
+ 		  dwc_otg_hcd_get_mps(&urb->pipe_info));
+ 	DWC_ERROR("  Data buffer length: %d\n", urb->length);
+-	DWC_ERROR("  Transfer buffer: %p, Transfer DMA: %p\n",
+-		  urb->buf, (void *)urb->dma);
+-	DWC_ERROR("  Setup buffer: %p, Setup DMA: %p\n",
+-		  urb->setup_packet, (void *)urb->setup_dma);
++	DWC_ERROR("  Transfer buffer: %p, Transfer DMA: %pad\n",
++		  urb->buf, &urb->dma);
++	DWC_ERROR("  Setup buffer: %p, Setup DMA: %pad\n",
++		  urb->setup_packet, &urb->setup_dma);
+ 	DWC_ERROR("  Interval: %d\n", urb->interval);
+ 
+ 	/* Core haltes the channel for Descriptor DMA mode */
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
+@@ -482,8 +482,8 @@ static void hcd_init_fiq(void *cookie)
+ 			otg_dev->os_dep.mphi_base + 0x1f0;
+ 		dwc_otg_hcd->fiq_state->mphi_regs.swirq_clr =
+ 			otg_dev->os_dep.mphi_base + 0x1f4;
+-		DWC_WARN("Fake MPHI regs_base at 0x%08x",
+-			 (int)dwc_otg_hcd->fiq_state->mphi_regs.base);
++		DWC_WARN("Fake MPHI regs_base at %px",
++			 dwc_otg_hcd->fiq_state->mphi_regs.base);
+ 	} else {
+ 		dwc_otg_hcd->fiq_state->mphi_regs.ctrl =
+ 			otg_dev->os_dep.mphi_base + 0x4c;
+--- a/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd_intr.c
+@@ -3377,7 +3377,7 @@ void predict_nextep_seq( dwc_otg_core_if
+ 	dtknq1_data_t dtknqr1;
+ 	uint32_t in_tkn_epnums[4];
+ 	uint8_t seqnum[MAX_EPS_CHANNELS];
+-	uint8_t intkn_seq[TOKEN_Q_DEPTH];
++	uint8_t intkn_seq[1 << 5];
+ 	grstctl_t resetctl = {.d32 = 0 };
+ 	uint8_t temp;
+ 	int ndx = 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0308-rpivid_h625-Fix-build-warnings.patch b/target/linux/bcm27xx/patches-5.15/950-0308-rpivid_h625-Fix-build-warnings.patch
new file mode 100644
index 0000000000..c0243a329b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0308-rpivid_h625-Fix-build-warnings.patch
@@ -0,0 +1,68 @@
+From 60940ef958ec9886f189b1df3a587716eebc3d4d Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 27 Oct 2020 12:10:40 +0000
+Subject: [PATCH] rpivid_h625: Fix build warnings
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/staging/media/rpivid/rpivid_h265.c | 16 ++++++++--------
+ 1 file changed, 8 insertions(+), 8 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -1341,10 +1341,10 @@ static int frame_end(struct rpivid_dev *
+ 
+ 		if (gptr_realloc_new(dev, de->cmd_copy_gptr, cmd_alloc)) {
+ 			v4l2_err(&dev->v4l2_dev,
+-				 "Alloc cmd buffer (%d): FAILED\n", cmd_alloc);
++				 "Alloc cmd buffer (%zu): FAILED\n", cmd_alloc);
+ 			return -ENOMEM;
+ 		}
+-		v4l2_info(&dev->v4l2_dev, "Alloc cmd buffer (%d): OK\n",
++		v4l2_info(&dev->v4l2_dev, "Alloc cmd buffer (%zu): OK\n",
+ 			  cmd_alloc);
+ 	}
+ 
+@@ -1696,12 +1696,12 @@ static void rpivid_h265_setup(struct rpi
+ 				       bits_alloc,
+ 				       DMA_ATTR_FORCE_CONTIGUOUS) != 0) {
+ 				v4l2_err(&dev->v4l2_dev,
+-					 "Unable to alloc buf (%d) for bit copy\n",
++					 "Unable to alloc buf (%zu) for bit copy\n",
+ 					 bits_alloc);
+ 				goto fail;
+ 			}
+ 			v4l2_info(&dev->v4l2_dev,
+-				  "Alloc buf (%d) for bit copy OK\n",
++				  "Alloc buf (%zu) for bit copy OK\n",
+ 				  bits_alloc);
+ 		}
+ 	}
+@@ -1995,11 +1995,11 @@ static void phase1_thread(struct rpivid_
+ 	if (de->p1_status & STATUS_PU_EXHAUSTED) {
+ 		if (gptr_realloc_new(dev, pu_gptr, next_size(pu_gptr->size))) {
+ 			v4l2_err(&dev->v4l2_dev,
+-				 "%s: PU realloc (%#x) failed\n",
++				 "%s: PU realloc (%zx) failed\n",
+ 				 __func__, pu_gptr->size);
+ 			goto fail;
+ 		}
+-		v4l2_info(&dev->v4l2_dev, "%s: PU realloc (%#x) OK\n",
++		v4l2_info(&dev->v4l2_dev, "%s: PU realloc (%zx) OK\n",
+ 			  __func__, pu_gptr->size);
+ 	}
+ 
+@@ -2007,11 +2007,11 @@ static void phase1_thread(struct rpivid_
+ 		if (gptr_realloc_new(dev, coeff_gptr,
+ 				     next_size(coeff_gptr->size))) {
+ 			v4l2_err(&dev->v4l2_dev,
+-				 "%s: Coeff realloc (%#x) failed\n",
++				 "%s: Coeff realloc (%zx) failed\n",
+ 				 __func__, coeff_gptr->size);
+ 			goto fail;
+ 		}
+-		v4l2_info(&dev->v4l2_dev, "%s: Coeff realloc (%#x) OK\n",
++		v4l2_info(&dev->v4l2_dev, "%s: Coeff realloc (%zx) OK\n",
+ 			  __func__, coeff_gptr->size);
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0309-bcm2708_fb-Fix-a-build-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0309-bcm2708_fb-Fix-a-build-warning.patch
new file mode 100644
index 0000000000..9fcb63d5c2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0309-bcm2708_fb-Fix-a-build-warning.patch
@@ -0,0 +1,22 @@
+From c0c2a231421253e1f13dd5fe1921f4b6b39706a4 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 27 Oct 2020 12:12:22 +0000
+Subject: [PATCH] bcm2708_fb: Fix a build warning
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/video/fbdev/bcm2708_fb.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/video/fbdev/bcm2708_fb.c
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -693,7 +693,8 @@ static long vc_mem_copy(struct bcm2708_f
+ 		u8 *q = (u8 *)ioparam->dst + offset;
+ 
+ 		dma_memcpy(fb, bus_addr,
+-			   INTALIAS_L1L2_NONALLOCATING((dma_addr_t)p), size);
++			   INTALIAS_L1L2_NONALLOCATING((u32)(uintptr_t)p),
++						       size);
+ 		if (copy_to_user(q, buf, s) != 0) {
+ 			pr_err("[%s]: failed to copy-to-user\n", __func__);
+ 			rc = -EFAULT;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0310-watchdog-bcm2835-Ignore-params-after-the-partition-n.patch b/target/linux/bcm27xx/patches-5.15/950-0310-watchdog-bcm2835-Ignore-params-after-the-partition-n.patch
new file mode 100644
index 0000000000..9f8eb271e7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0310-watchdog-bcm2835-Ignore-params-after-the-partition-n.patch
@@ -0,0 +1,29 @@
+From 9cc2092a4694ab71d3bc6bc066c495a205a4f636 Mon Sep 17 00:00:00 2001
+From: Tim Gover <tim.gover@raspberrypi.org>
+Date: Thu, 22 Oct 2020 15:30:55 +0100
+Subject: [PATCH] watchdog: bcm2835: Ignore params after the partition
+ number
+
+Use sscanf to extract the partition number and ignore extra parameters
+which are only relevant to other reboot notifiers.
+---
+ drivers/watchdog/bcm2835_wdt.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/watchdog/bcm2835_wdt.c
++++ b/drivers/watchdog/bcm2835_wdt.c
+@@ -126,10 +126,12 @@ static int bcm2835_restart(struct watchd
+ {
+ 	struct bcm2835_wdt *wdt = watchdog_get_drvdata(wdog);
+ 
+-	unsigned long long val;
++	unsigned long val;
+ 	u8 partition = 0;
+ 
+-	if (data && !kstrtoull(data, 0, &val) && val <= 63)
++	// Allow extra arguments separated by spaces after
++	// the partition number.
++	if (data && sscanf(data, "%lu", &val) && val < 63)
+ 		partition = val;
+ 
+ 	__bcm2835_restart(wdt, partition);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0311-firmware-raspberrypi-Add-support-for-tryonce-reboot-.patch b/target/linux/bcm27xx/patches-5.15/950-0311-firmware-raspberrypi-Add-support-for-tryonce-reboot-.patch
new file mode 100644
index 0000000000..682b945205
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0311-firmware-raspberrypi-Add-support-for-tryonce-reboot-.patch
@@ -0,0 +1,72 @@
+From 7fd7e502a0d21e055291b994e487109982f74ed6 Mon Sep 17 00:00:00 2001
+From: Tim Gover <tim.gover@raspberrypi.com>
+Date: Tue, 20 Oct 2020 11:55:37 +0100
+Subject: [PATCH] firmware: raspberrypi: Add support for tryonce reboot
+ flag
+
+Define a new mailbox (SET_REBOOT_FLAGS) which may be used to
+pass optional flags to the Raspberry Pi firmware that changes
+the behaviour of the bootloader and firmware during a reboot.
+
+Currently this just defines the 'tryboot' flag which causes
+the firmware to load tryboot.txt instead config.txt. This
+alternate configuration file can be used to specify the
+path of an alternate firmware and kernels allowing a fallback
+mechanism to be implemented for OS upgrades.
+---
+ drivers/firmware/raspberrypi.c             | 25 ++++++++++++++++++++--
+ include/soc/bcm2835/raspberrypi-firmware.h |  2 ++
+ 2 files changed, 25 insertions(+), 2 deletions(-)
+
+--- a/drivers/firmware/raspberrypi.c
++++ b/drivers/firmware/raspberrypi.c
+@@ -193,6 +193,7 @@ static int rpi_firmware_notify_reboot(st
+ {
+ 	struct rpi_firmware *fw;
+ 	struct platform_device *pdev = g_pdev;
++	u32 reboot_flags = 0;
+ 
+ 	if (!pdev)
+ 		return 0;
+@@ -201,8 +202,28 @@ static int rpi_firmware_notify_reboot(st
+ 	if (!fw)
+ 		return 0;
+ 
+-	(void)rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_REBOOT,
+-				    0, 0);
++	// The partition id is the first parameter followed by zero or
++	// more flags separated by spaces indicating the reason for the reboot.
++	//
++	// 'tryboot': Sets a one-shot flag which is cleared upon reboot and
++	//            causes the tryboot.txt to be loaded instead of config.txt
++	//            by the bootloader and the start.elf firmware.
++	//
++	//            This is intended to allow automatic fallback to a known
++	//            good image if an OS/FW upgrade fails.
++	//
++	// N.B. The firmware mechanism for storing reboot flags may vary
++	// on different Raspberry Pi models.
++	if (data && strstr(data, " tryboot"))
++		reboot_flags |= 0x1;
++
++	// The mailbox might have been called earlier, directly via vcmailbox
++	// so only overwrite if reboot flags are passed to the reboot command.
++	if (reboot_flags)
++		(void)rpi_firmware_property(fw, RPI_FIRMWARE_SET_REBOOT_FLAGS,
++				&reboot_flags, sizeof(reboot_flags));
++
++	(void)rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_REBOOT, NULL, 0);
+ 
+ 	return 0;
+ }
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -93,6 +93,8 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_GET_POE_HAT_VAL =                        0x00030049,
+ 	RPI_FIRMWARE_SET_POE_HAT_VAL =                        0x00030050,
+ 	RPI_FIRMWARE_NOTIFY_XHCI_RESET =                      0x00030058,
++	RPI_FIRMWARE_GET_REBOOT_FLAGS =                       0x00030064,
++	RPI_FIRMWARE_SET_REBOOT_FLAGS =                       0x00038064,
+ 	RPI_FIRMWARE_NOTIFY_DISPLAY_DONE =                    0x00030066,
+ 
+ 	/* Dispmanx TAGS */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0312-phy-broadcom-split-out-the-BCM54213PE-from-the-BCM54.patch b/target/linux/bcm27xx/patches-5.15/950-0312-phy-broadcom-split-out-the-BCM54213PE-from-the-BCM54.patch
new file mode 100644
index 0000000000..3284d0d29b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0312-phy-broadcom-split-out-the-BCM54213PE-from-the-BCM54.patch
@@ -0,0 +1,71 @@
+From b2024129ecd6d0171516e2a7d6459ba51d6691e3 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Tue, 14 May 2019 17:00:41 +0100
+Subject: [PATCH] phy: broadcom: split out the BCM54213PE from the
+ BCM54210E IDs
+
+The last nibble is a revision ID, and the 54213pe is a later rev
+than the 54210e. Running the 54210e setup code on a 54213pe results
+in a broken RGMII interface.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/net/phy/broadcom.c | 15 ++++++++++++---
+ include/linux/brcmphy.h    |  1 +
+ 2 files changed, 13 insertions(+), 3 deletions(-)
+
+--- a/drivers/net/phy/broadcom.c
++++ b/drivers/net/phy/broadcom.c
+@@ -254,7 +254,8 @@ static void bcm54xx_adjust_rxrefclk(stru
+ 	    BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M &&
+ 	    BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54210E &&
+ 	    BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54810 &&
+-	    BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811)
++	    BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811 &&
++	    BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54213PE)
+ 		return;
+ 
+ 	val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_SCR3);
+@@ -753,7 +754,7 @@ static struct phy_driver broadcom_driver
+ 	.handle_interrupt = bcm_phy_handle_interrupt,
+ }, {
+ 	.phy_id		= PHY_ID_BCM54210E,
+-	.phy_id_mask	= 0xfffffff0,
++	.phy_id_mask	= 0xffffffff,
+ 	.name		= "Broadcom BCM54210E",
+ 	/* PHY_GBIT_FEATURES */
+ 	.get_sset_count	= bcm_phy_get_sset_count,
+@@ -764,6 +765,13 @@ static struct phy_driver broadcom_driver
+ 	.config_intr	= bcm_phy_config_intr,
+ 	.handle_interrupt = bcm_phy_handle_interrupt,
+ }, {
++	.phy_id		= PHY_ID_BCM54213PE,
++	.phy_id_mask	= 0xffffffff,
++	.name		= "Broadcom BCM54213PE",
++	/* PHY_GBIT_FEATURES */
++	.config_init	= bcm54xx_config_init,
++	.config_intr	= bcm_phy_config_intr,
++}, {
+ 	.phy_id		= PHY_ID_BCM5461,
+ 	.phy_id_mask	= 0xfffffff0,
+ 	.name		= "Broadcom BCM5461",
+@@ -962,7 +970,8 @@ module_phy_driver(broadcom_drivers);
+ static struct mdio_device_id __maybe_unused broadcom_tbl[] = {
+ 	{ PHY_ID_BCM5411, 0xfffffff0 },
+ 	{ PHY_ID_BCM5421, 0xfffffff0 },
+-	{ PHY_ID_BCM54210E, 0xfffffff0 },
++	{ PHY_ID_BCM54210E, 0xffffffff },
++	{ PHY_ID_BCM54213PE, 0xffffffff },
+ 	{ PHY_ID_BCM5461, 0xfffffff0 },
+ 	{ PHY_ID_BCM54612E, 0xfffffff0 },
+ 	{ PHY_ID_BCM54616S, 0xfffffff0 },
+--- a/include/linux/brcmphy.h
++++ b/include/linux/brcmphy.h
+@@ -22,6 +22,7 @@
+ #define PHY_ID_BCM5411			0x00206070
+ #define PHY_ID_BCM5421			0x002060e0
+ #define PHY_ID_BCM54210E		0x600d84a0
++#define PHY_ID_BCM54213PE		0x600d84a2
+ #define PHY_ID_BCM5464			0x002060b0
+ #define PHY_ID_BCM5461			0x002060c0
+ #define PHY_ID_BCM54612E		0x03625e60
diff --git a/target/linux/bcm27xx/patches-5.15/950-0313-phy-broadcom-Add-bcm54213pe-configuration.patch b/target/linux/bcm27xx/patches-5.15/950-0313-phy-broadcom-Add-bcm54213pe-configuration.patch
new file mode 100644
index 0000000000..96aba5cf93
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0313-phy-broadcom-Add-bcm54213pe-configuration.patch
@@ -0,0 +1,34 @@
+From 1d6c74b02a9468202bd1f033e79d97e48587db5e Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 29 Oct 2020 14:10:56 +0000
+Subject: [PATCH] phy: broadcom: Add bcm54213pe configuration
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/net/phy/broadcom.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/net/phy/broadcom.c
++++ b/drivers/net/phy/broadcom.c
+@@ -83,6 +83,11 @@ static int bcm54210e_config_init(struct
+ 	return 0;
+ }
+ 
++static int bcm54213pe_config_init(struct phy_device *phydev)
++{
++	return bcm54210e_config_init(phydev);
++}
++
+ static int bcm54612e_config_init(struct phy_device *phydev)
+ {
+ 	int reg;
+@@ -357,6 +362,9 @@ static int bcm54xx_config_init(struct ph
+ 	case PHY_ID_BCM54612E:
+ 		err = bcm54612e_config_init(phydev);
+ 		break;
++	case PHY_ID_BCM54213PE:
++		err = bcm54213pe_config_init(phydev);
++		break;
+ 	case PHY_ID_BCM54616S:
+ 		err = bcm54616s_config_init(phydev);
+ 		break;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0314-PCI-brcmstb-Restore-initial-fundamental-reset.patch b/target/linux/bcm27xx/patches-5.15/950-0314-PCI-brcmstb-Restore-initial-fundamental-reset.patch
new file mode 100644
index 0000000000..e2c900c07d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0314-PCI-brcmstb-Restore-initial-fundamental-reset.patch
@@ -0,0 +1,35 @@
+From e819152f96f67e20f1d7a00446cd9c0035850825 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 11 Nov 2020 17:08:33 +0000
+Subject: [PATCH] PCI: brcmstb: Restore initial fundamental reset
+
+[1] replaced a single reset function with a pointer to one of two
+implementations, but also removed the call asserting the reset
+at the start of brcm_pcie_setup. Doing so breaks Raspberry Pis with
+VL805 XHCI controllers lacking dedicated SPI EEPROMs, which have been
+used for USB booting but then need to be reset so that the kernel
+can reconfigure them. The lack of a reset causes the firmware's loading
+of the EEPROM image to RAM to fail, breaking USB for the kernel.
+
+See: https://www.raspberrypi.org/forums/viewtopic.php?p=1758157#p1758157
+
+Fixes: 04356ac30771 ("PCI: brcmstb: Add bcm7278 PERST# support")
+
+[1] 04356ac30771 ("PCI: brcmstb: Add bcm7278 PERST# support")
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/pci/controller/pcie-brcmstb.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/pci/controller/pcie-brcmstb.c
++++ b/drivers/pci/controller/pcie-brcmstb.c
+@@ -879,6 +879,8 @@ static int brcm_pcie_setup(struct brcm_p
+ 
+ 	/* Reset the bridge */
+ 	pcie->bridge_sw_init_set(pcie, 1);
++	pcie->perst_set(pcie, 1);
++
+ 	usleep_range(100, 200);
+ 
+ 	/* Take the bridge out of reset */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0315-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch b/target/linux/bcm27xx/patches-5.15/950-0315-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch
new file mode 100644
index 0000000000..402b149fca
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0315-Input-edt-ft5x06-Poll-the-device-if-no-interrupt-is-.patch
@@ -0,0 +1,98 @@
+From cd24e1ce67ea6e34d9ef0886858b8b5ac77bf847 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 6 Nov 2020 18:45:10 +0000
+Subject: [PATCH] Input: edt-ft5x06: Poll the device if no interrupt is
+ configured.
+
+Not all systems have the interrupt line wired up, so switch to
+polling the touchscreen off a timer if no interrupt line is
+configured.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/input/touchscreen/edt-ft5x06.c | 51 +++++++++++++++++++++-----
+ 1 file changed, 41 insertions(+), 10 deletions(-)
+
+--- a/drivers/input/touchscreen/edt-ft5x06.c
++++ b/drivers/input/touchscreen/edt-ft5x06.c
+@@ -72,6 +72,8 @@
+ #define EDT_DEFAULT_NUM_X		1024
+ #define EDT_DEFAULT_NUM_Y		1024
+ 
++#define POLL_INTERVAL_MS		17	/* 17ms = 60fps */
++
+ enum edt_pmode {
+ 	EDT_PMODE_NOT_SUPPORTED,
+ 	EDT_PMODE_HIBERNATE,
+@@ -130,6 +132,9 @@ struct edt_ft5x06_ts_data {
+ 
+ 	struct edt_reg_addr reg_addr;
+ 	enum edt_ver version;
++
++	struct timer_list timer;
++	struct work_struct work_i2c_poll;
+ };
+ 
+ struct edt_i2c_chip_data {
+@@ -279,6 +284,22 @@ out:
+ 	return IRQ_HANDLED;
+ }
+ 
++static void edt_ft5x06_ts_irq_poll_timer(struct timer_list *t)
++{
++	struct edt_ft5x06_ts_data *tsdata = from_timer(tsdata, t, timer);
++
++	schedule_work(&tsdata->work_i2c_poll);
++	mod_timer(&tsdata->timer, jiffies + msecs_to_jiffies(POLL_INTERVAL_MS));
++}
++
++static void edt_ft5x06_ts_work_i2c_poll(struct work_struct *work)
++{
++	struct edt_ft5x06_ts_data *tsdata = container_of(work,
++			struct edt_ft5x06_ts_data, work_i2c_poll);
++
++	edt_ft5x06_ts_isr(0, tsdata);
++}
++
+ static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata,
+ 				     u8 addr, u8 value)
+ {
+@@ -1234,17 +1255,27 @@ static int edt_ft5x06_ts_probe(struct i2
+ 
+ 	i2c_set_clientdata(client, tsdata);
+ 
+-	irq_flags = irq_get_trigger_type(client->irq);
+-	if (irq_flags == IRQF_TRIGGER_NONE)
+-		irq_flags = IRQF_TRIGGER_FALLING;
+-	irq_flags |= IRQF_ONESHOT;
+-
+-	error = devm_request_threaded_irq(&client->dev, client->irq,
+-					NULL, edt_ft5x06_ts_isr, irq_flags,
+-					client->name, tsdata);
+-	if (error) {
+-		dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
+-		return error;
++	if (client->irq) {
++		irq_flags = irq_get_trigger_type(client->irq);
++		if (irq_flags == IRQF_TRIGGER_NONE)
++			irq_flags = IRQF_TRIGGER_FALLING;
++		irq_flags |= IRQF_ONESHOT;
++
++		error = devm_request_threaded_irq(&client->dev, client->irq,
++						  NULL, edt_ft5x06_ts_isr,
++						  irq_flags, client->name,
++						  tsdata);
++		if (error) {
++			dev_err(&client->dev, "Unable to request touchscreen IRQ.\n");
++			return error;
++		}
++	} else {
++		INIT_WORK(&tsdata->work_i2c_poll,
++			  edt_ft5x06_ts_work_i2c_poll);
++		timer_setup(&tsdata->timer, edt_ft5x06_ts_irq_poll_timer, 0);
++		tsdata->timer.expires = jiffies +
++					msecs_to_jiffies(POLL_INTERVAL_MS);
++		add_timer(&tsdata->timer);
+ 	}
+ 
+ 	error = devm_device_add_group(&client->dev, &edt_ft5x06_attr_group);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0316-drm-panel-raspberrypi-touchscreen-Use-independent-I2.patch b/target/linux/bcm27xx/patches-5.15/950-0316-drm-panel-raspberrypi-touchscreen-Use-independent-I2.patch
new file mode 100644
index 0000000000..bffd546481
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0316-drm-panel-raspberrypi-touchscreen-Use-independent-I2.patch
@@ -0,0 +1,58 @@
+From 41fa219f0276c70226ac097daaa1b485818bb82a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 23 Apr 2020 10:17:18 +0100
+Subject: [PATCH] drm/panel/raspberrypi-touchscreen: Use independent
+ I2C actions with delay.
+
+We now have the hardware I2C controller pinmuxed to the drive the
+display I2C, but this controller does not support clock stretching.
+The Atmel micro-controller in the panel requires clock stretching
+to allow it to prepare any data to be read.
+
+Split the rpi_touchscreen_i2c_read into two independent transactions with
+a delay between them for the Atmel to prepare the data.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../drm/panel/panel-raspberrypi-touchscreen.c | 30 ++++++++++++++++++-
+ 1 file changed, 29 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
++++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+@@ -219,7 +219,35 @@ static struct rpi_touchscreen *panel_to_
+ 
+ static int rpi_touchscreen_i2c_read(struct rpi_touchscreen *ts, u8 reg)
+ {
+-	return i2c_smbus_read_byte_data(ts->i2c, reg);
++	struct i2c_client *client = ts->i2c;
++	struct i2c_msg msgs[1];
++	u8 addr_buf[1] = { reg };
++	u8 data_buf[1] = { 0, };
++	int ret;
++
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = ARRAY_SIZE(addr_buf);
++	msgs[0].buf = addr_buf;
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	usleep_range(100, 300);
++
++	/* Read data from register */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = I2C_M_RD;
++	msgs[0].len = 1;
++	msgs[0].buf = data_buf;
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	return data_buf[0];
+ }
+ 
+ static void rpi_touchscreen_i2c_write(struct rpi_touchscreen *ts,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0317-drm-panel-raspberrypi-ts-Insert-delay-before-polling.patch b/target/linux/bcm27xx/patches-5.15/950-0317-drm-panel-raspberrypi-ts-Insert-delay-before-polling.patch
new file mode 100644
index 0000000000..35c546a990
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0317-drm-panel-raspberrypi-ts-Insert-delay-before-polling.patch
@@ -0,0 +1,26 @@
+From f44c81e5ba2742d2d3f10b99f30983491b4a138f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 10 Nov 2020 11:21:56 +0000
+Subject: [PATCH] drm/panel/raspberrypi-ts: Insert delay before polling
+ for startup state
+
+In switching to the hardware I2C controller there is an issue
+where we seem to not get back the correct state from the Pi
+touchscreen.
+Insert a delay before polling to avoid this condition.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
++++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+@@ -299,6 +299,7 @@ static int rpi_touchscreen_prepare(struc
+ 	int i;
+ 
+ 	rpi_touchscreen_i2c_write(ts, REG_POWERON, 1);
++	usleep_range(20000, 25000);
+ 	/* Wait for nPWRDWN to go low to indicate poweron is done. */
+ 	for (i = 0; i < 100; i++) {
+ 		if (rpi_touchscreen_i2c_read(ts, REG_PORTB) & 1)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0318-dt-bindings-Add-compatible-for-BCM2711-DSI1.patch b/target/linux/bcm27xx/patches-5.15/950-0318-dt-bindings-Add-compatible-for-BCM2711-DSI1.patch
new file mode 100644
index 0000000000..9c18a397e1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0318-dt-bindings-Add-compatible-for-BCM2711-DSI1.patch
@@ -0,0 +1,23 @@
+From a9aef08f730b654e70f3a95df1909db669ee6ddf Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 12 Nov 2020 17:01:52 +0000
+Subject: [PATCH] dt-bindings: Add compatible for BCM2711 DSI1
+
+DSI1 on BCM2711 doesn't require the DMA workaround that is used
+on BCM2835/6/7, therefore it needs a new compatible string.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml
++++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml
+@@ -21,6 +21,7 @@ properties:
+       - brcm,bcm2711-dsi1
+       - brcm,bcm2835-dsi0
+       - brcm,bcm2835-dsi1
++      - brcm,bcm2711-dsi1
+ 
+   reg:
+     maxItems: 1
diff --git a/target/linux/bcm27xx/patches-5.15/950-0319-media-bcm2835-unicam-Correctly-handle-error-propagat.patch b/target/linux/bcm27xx/patches-5.15/950-0319-media-bcm2835-unicam-Correctly-handle-error-propagat.patch
new file mode 100644
index 0000000000..5a3542a58b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0319-media-bcm2835-unicam-Correctly-handle-error-propagat.patch
@@ -0,0 +1,27 @@
+From 95714beb12064f8896baa2faa2ba37db6a6c2351 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 2 Dec 2020 15:22:23 +0000
+Subject: [PATCH] media: bcm2835-unicam: Correctly handle error
+ propagation for stream on
+
+On a failure in start_streaming(), the error code would not propagate to
+the calling function on all conditions. This would cause the userland
+caller to not know of the failure.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1730,8 +1730,7 @@ err_disable_unicam:
+ 	unicam_disable(dev);
+ 	clk_disable_unprepare(dev->clock);
+ err_vpu_clock:
+-	ret = clk_set_min_rate(dev->vpu_clock, 0);
+-	if (ret)
++	if (clk_set_min_rate(dev->vpu_clock, 0))
+ 		unicam_err(dev, "failed to reset the VPU clock\n");
+ 	clk_disable_unprepare(dev->vpu_clock);
+ err_pm_put:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0320-media-bcm2835-unicam-Return-early-from-stop_streamin.patch b/target/linux/bcm27xx/patches-5.15/950-0320-media-bcm2835-unicam-Return-early-from-stop_streamin.patch
new file mode 100644
index 0000000000..a3374b347a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0320-media-bcm2835-unicam-Return-early-from-stop_streamin.patch
@@ -0,0 +1,64 @@
+From 088b12fc4421571cb337c357f4d21f0c8a0ecf4d Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 2 Dec 2020 15:26:09 +0000
+Subject: [PATCH] media: bcm2835-unicam: Return early from
+ stop_streaming() if stopped
+
+clk_disable_unprepare() is called unconditionally in stop_streaming().
+This is incorrect in the cases where start_streaming() fails, and
+unprepares all clocks as part of the failure cleanup. To avoid this,
+ensure that clk_disable_unprepare() is only called in stop_streaming()
+if the clocks are in a prepared state.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 16 +++++++++-------
+ 1 file changed, 9 insertions(+), 7 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -426,6 +426,8 @@ struct unicam_device {
+ 	struct clk *clock;
+ 	/* vpu clock handle */
+ 	struct clk *vpu_clock;
++	/* clock status for error handling */
++	bool clocks_enabled;
+ 	/* V4l2 device */
+ 	struct v4l2_device v4l2_dev;
+ 	struct media_device mdev;
+@@ -1724,6 +1726,7 @@ static int unicam_start_streaming(struct
+ 		goto err_disable_unicam;
+ 	}
+ 
++	dev->clocks_enabled = true;
+ 	return 0;
+ 
+ err_disable_unicam:
+@@ -1750,8 +1753,6 @@ static void unicam_stop_streaming(struct
+ 	node->streaming = false;
+ 
+ 	if (node->pad_id == IMAGE_PAD) {
+-		int ret;
+-
+ 		/*
+ 		 * Stop streaming the sensor and disable the peripheral.
+ 		 * We cannot continue streaming embedded data with the
+@@ -1762,12 +1763,13 @@ static void unicam_stop_streaming(struct
+ 
+ 		unicam_disable(dev);
+ 
+-		ret = clk_set_min_rate(dev->vpu_clock, 0);
+-		if (ret)
+-			unicam_err(dev, "failed to reset the min VPU clock\n");
++		if (dev->clocks_enabled) {
++			if (clk_set_min_rate(dev->vpu_clock, 0))
++				unicam_err(dev, "failed to reset the min VPU clock\n");
+ 
+-		clk_disable_unprepare(dev->vpu_clock);
+-		clk_disable_unprepare(dev->clock);
++			clk_disable_unprepare(dev->vpu_clock);
++			clk_disable_unprepare(dev->clock);
++		}
+ 		unicam_runtime_put(dev);
+ 
+ 	} else if (node->pad_id == METADATA_PAD) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0321-media-bcm2835-unicam-Clear-clock-state-when-stopping.patch b/target/linux/bcm27xx/patches-5.15/950-0321-media-bcm2835-unicam-Clear-clock-state-when-stopping.patch
new file mode 100644
index 0000000000..c03f2654da
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0321-media-bcm2835-unicam-Clear-clock-state-when-stopping.patch
@@ -0,0 +1,25 @@
+From f1bc6206ef49d117f6e12f55d924814de85b4aef Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 2 Dec 2020 16:48:41 +0000
+Subject: [PATCH] media: bcm2835-unicam: Clear clock state when
+ stopping streaming
+
+Commit 65e08c465020d4c5b51afb452efc2246d80fd66f failed to clear the
+clock state when the device stopped streaming. Fix this, as it might
+again cause the same problems when doing an unprepare.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1769,6 +1769,7 @@ static void unicam_stop_streaming(struct
+ 
+ 			clk_disable_unprepare(dev->vpu_clock);
+ 			clk_disable_unprepare(dev->clock);
++			dev->clocks_enabled = false;
+ 		}
+ 		unicam_runtime_put(dev);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0322-PCI-brcmstb-Advertise-MSI-X-support.patch b/target/linux/bcm27xx/patches-5.15/950-0322-PCI-brcmstb-Advertise-MSI-X-support.patch
new file mode 100644
index 0000000000..6a76331646
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0322-PCI-brcmstb-Advertise-MSI-X-support.patch
@@ -0,0 +1,27 @@
+From 702580031a99544e76be9b85c0044c77f957748c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 3 Dec 2020 13:44:42 +0000
+Subject: [PATCH] PCI: brcmstb: Advertise MSI-X support
+
+Although the BRCMSTB PCIe interface doesn't technically support the
+MSI-X spec, in practise it seems to work provided no more than 32
+MSI-Xs are required. Add the required flag to the driver to allow
+experimentation with devices that demand MSI-X support.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/pci/controller/pcie-brcmstb.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/pci/controller/pcie-brcmstb.c
++++ b/drivers/pci/controller/pcie-brcmstb.c
+@@ -471,7 +471,8 @@ static struct irq_chip brcm_msi_irq_chip
+ 
+ static struct msi_domain_info brcm_msi_domain_info = {
+ 	/* Multi MSI is supported by the controller, but not by this driver */
+-	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
++	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
++		   MSI_FLAG_PCI_MSIX),
+ 	.chip	= &brcm_msi_irq_chip,
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0323-net-lan78xx-Ack-pending-PHY-ints-when-resetting.patch b/target/linux/bcm27xx/patches-5.15/950-0323-net-lan78xx-Ack-pending-PHY-ints-when-resetting.patch
new file mode 100644
index 0000000000..1fea6bd153
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0323-net-lan78xx-Ack-pending-PHY-ints-when-resetting.patch
@@ -0,0 +1,32 @@
+From 107e14fb85b57eca17266a62c7cba81b22448953 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 15 Dec 2020 16:38:37 +0000
+Subject: [PATCH] net: lan78xx: Ack pending PHY ints when resetting
+
+lan78xx_link_reset explicitly clears the MAC's view of the PHY's IRQ
+status. In doing so it potentially leaves the PHY with a pending
+interrupt that will never be acknowledged, at which point no further
+interrupts will be generated.
+
+Avoid the problem by acknowledging any pending PHY interrupt after
+clearing the MAC's status bit.
+
+See: https://github.com/raspberrypi/linux/issues/2937
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/net/usb/lan78xx.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -1274,6 +1274,9 @@ static int lan78xx_link_reset(struct lan
+ 	if (unlikely(ret < 0))
+ 		return ret;
+ 
++	/* Acknowledge any pending PHY interrupt, lest it be the last */
++	phy_read(phydev, LAN88XX_INT_STS);
++
+ 	mutex_lock(&phydev->lock);
+ 	phy_read_status(phydev);
+ 	link = phydev->link;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0324-media-i2c-imx477-Selection-compliance-fixes.patch b/target/linux/bcm27xx/patches-5.15/950-0324-media-i2c-imx477-Selection-compliance-fixes.patch
new file mode 100644
index 0000000000..a0c5a93116
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0324-media-i2c-imx477-Selection-compliance-fixes.patch
@@ -0,0 +1,80 @@
+From 7da0b5ae8e757e56c3405a4e68b5ae91a2ea3227 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 9 Dec 2020 11:30:12 +0000
+Subject: [PATCH] media: i2c: imx477: Selection compliance fixes
+
+To comply with the intended usage of the V4L2 selection target when
+used to retrieve a sensor image properties, adjust the rectangles
+returned by the imx477 driver.
+
+The top/left crop coordinates of the TGT_CROP rectangle were set to
+(0, 0) instead of (8, 16) which is the offset from the larger physical
+pixel array rectangle. This was also a mismatch with the default values
+crop rectangle value, so this is corrected. Found with v4l2-compliance.
+
+While at it, add V4L2_SEL_TGT_CROP_BOUNDS support: CROP_DEFAULT and
+CROP_BOUNDS have the same size as the non-active pixels are not readable
+using the selection API. Found with v4l2-compliance.
+
+This commit mirrors 543790f777ba1b3264c168c653db6d415e7c983f done for
+the imx219 sensor.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 17 +++++++++--------
+ 1 file changed, 9 insertions(+), 8 deletions(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -900,8 +900,8 @@ static const struct imx477_mode supporte
+ 		.height = 3040,
+ 		.line_length_pix = 0x5dc0,
+ 		.crop = {
+-			.left = 0,
+-			.top = 0,
++			.left = IMX477_PIXEL_ARRAY_LEFT,
++			.top = IMX477_PIXEL_ARRAY_TOP,
+ 			.width = 4056,
+ 			.height = 3040,
+ 		},
+@@ -924,8 +924,8 @@ static const struct imx477_mode supporte
+ 		.height = 1520,
+ 		.line_length_pix = 0x31c4,
+ 		.crop = {
+-			.left = 0,
+-			.top = 0,
++			.left = IMX477_PIXEL_ARRAY_LEFT,
++			.top = IMX477_PIXEL_ARRAY_TOP,
+ 			.width = 4056,
+ 			.height = 3040,
+ 		},
+@@ -948,8 +948,8 @@ static const struct imx477_mode supporte
+ 		.height = 1080,
+ 		.line_length_pix = 0x31c4,
+ 		.crop = {
+-			.left = 0,
+-			.top = 440,
++			.left = IMX477_PIXEL_ARRAY_LEFT,
++			.top = IMX477_PIXEL_ARRAY_TOP + 440,
+ 			.width = 4056,
+ 			.height = 2600,
+ 		},
+@@ -983,8 +983,8 @@ static const struct imx477_mode supporte
+ 			 * rectangle once the driver is expanded to represent
+ 			 * its processing blocks with multiple subdevs.
+ 			 */
+-			.left = 4,
+-			.top = 0,
++			.left = IMX477_PIXEL_ARRAY_LEFT + 4,
++			.top = IMX477_PIXEL_ARRAY_TOP,
+ 			.width = 4052,
+ 			.height = 3040,
+ 		},
+@@ -1696,6 +1696,7 @@ static int imx477_get_selection(struct v
+ 		return 0;
+ 
+ 	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
+ 		sel->r.left = IMX477_PIXEL_ARRAY_LEFT;
+ 		sel->r.top = IMX477_PIXEL_ARRAY_TOP;
+ 		sel->r.width = IMX477_PIXEL_ARRAY_WIDTH;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0325-vc-sm-cma-fixed-kbuild-problem.patch b/target/linux/bcm27xx/patches-5.15/950-0325-vc-sm-cma-fixed-kbuild-problem.patch
new file mode 100644
index 0000000000..5dec765fa8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0325-vc-sm-cma-fixed-kbuild-problem.patch
@@ -0,0 +1,30 @@
+From b2f0ef390348a2676358fd8d66b850c4a6f888e9 Mon Sep 17 00:00:00 2001
+From: gesangtome <gesangtome@foxmail.com>
+Date: Fri, 1 Jan 2021 18:03:17 +0800
+Subject: [PATCH] vc-sm-cma: fixed kbuild problem
+
+error logs:
+  drivers/staging/vc04_services/vc-sm-cma/Kconfig:1:error: recursive dependency detected!
+  drivers/staging/vc04_services/vc-sm-cma/Kconfig:1:      symbol BCM_VC_SM_CMA is selected by BCM2835_VCHIQ_MMAL
+  drivers/staging/vc04_services/vchiq-mmal/Kconfig:1:     symbol BCM2835_VCHIQ_MMAL depends on BCM2835_VCHIQ
+  drivers/staging/vc04_services/Kconfig:14:       symbol BCM2835_VCHIQ is selected by BCM_VC_SM_CMA
+  For a resolution refer to Documentation/kbuild/kconfig-language.rst
+  subsection "Kconfig recursive dependency limitations"
+
+Tested-by: make ARCH=arm64 bcm2711_defconfig
+Test platform: fedora 33
+Branch: rpi-5.10.y
+---
+ drivers/staging/vc04_services/vchiq-mmal/Kconfig | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/Kconfig
++++ b/drivers/staging/vc04_services/vchiq-mmal/Kconfig
+@@ -1,6 +1,6 @@
+ config BCM2835_VCHIQ_MMAL
+ 	tristate "BCM2835 MMAL VCHIQ service"
+-	depends on BCM2835_VCHIQ
++	select BCM2835_VCHIQ
+ 	select BCM_VC_SM_CMA
+ 	help
+ 	  Enables the MMAL API over VCHIQ interface as used for the
diff --git a/target/linux/bcm27xx/patches-5.15/950-0326-staging-vc04_services-Add-additional-unpacked-raw-fo.patch b/target/linux/bcm27xx/patches-5.15/950-0326-staging-vc04_services-Add-additional-unpacked-raw-fo.patch
new file mode 100644
index 0000000000..c3f5c0df87
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0326-staging-vc04_services-Add-additional-unpacked-raw-fo.patch
@@ -0,0 +1,51 @@
+From 603b4e45593ad0bd40471a9b00139d4cb618cfb2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 7 Jan 2021 10:43:20 +0000
+Subject: [PATCH] staging/vc04_services: Add additional unpacked raw
+ formats
+
+Support has been added for the unpacked (16bpp) versions of
+the MIPI raw 10, 12, and 14 formats, so add the 4CCs for them.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/vchiq-mmal/mmal-encodings.h | 22 +++++++++++++++++++
+ 1 file changed, 22 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-encodings.h
+@@ -102,12 +102,34 @@
+ #define MMAL_ENCODING_BAYER_SGRBG16    MMAL_FOURCC('G', 'R', '1', '6')
+ #define MMAL_ENCODING_BAYER_SRGGB16    MMAL_FOURCC('R', 'G', '1', '6')
+ 
++/* 10 bit per pixel unpacked (16bit) Bayer formats. */
++#define MMAL_ENCODING_BAYER_SBGGR10    MMAL_FOURCC('B', 'G', '1', '0')
++#define MMAL_ENCODING_BAYER_SGRBG10    MMAL_FOURCC('B', 'A', '1', '0')
++#define MMAL_ENCODING_BAYER_SGBRG10    MMAL_FOURCC('G', 'B', '1', '0')
++#define MMAL_ENCODING_BAYER_SRGGB10    MMAL_FOURCC('R', 'G', '1', '0')
++
++/* 12 bit per pixel unpacked (16bit) Bayer formats */
++#define MMAL_ENCODING_BAYER_SBGGR12    MMAL_FOURCC('B', 'G', '1', '2')
++#define MMAL_ENCODING_BAYER_SGRBG12    MMAL_FOURCC('B', 'A', '1', '2')
++#define MMAL_ENCODING_BAYER_SGBRG12    MMAL_FOURCC('G', 'B', '1', '2')
++#define MMAL_ENCODING_BAYER_SRGGB12    MMAL_FOURCC('R', 'G', '1', '2')
++
++/* 14 bit per pixel unpacked (16bit) Bayer formats */
++#define MMAL_ENCODING_BAYER_SBGGR14    MMAL_FOURCC('B', 'G', '1', '4')
++#define MMAL_ENCODING_BAYER_SGBRG14    MMAL_FOURCC('G', 'B', '1', '4')
++#define MMAL_ENCODING_BAYER_SGRBG14    MMAL_FOURCC('G', 'R', '1', '4')
++#define MMAL_ENCODING_BAYER_SRGGB14    MMAL_FOURCC('R', 'G', '1', '4')
++
+ /* MIPI packed monochrome images */
+ #define MMAL_ENCODING_GREY    MMAL_FOURCC('G', 'R', 'E', 'Y')
+ #define MMAL_ENCODING_Y10P    MMAL_FOURCC('Y', '1', '0', 'P')
+ #define MMAL_ENCODING_Y12P    MMAL_FOURCC('Y', '1', '2', 'P')
+ #define MMAL_ENCODING_Y14P    MMAL_FOURCC('Y', '1', '4', 'P')
+ #define MMAL_ENCODING_Y16     MMAL_FOURCC('Y', '1', '6', ' ')
++/* Unpacked monochrome formats (16bit per sample, but only N LSBs used) */
++#define MMAL_ENCODING_Y10     MMAL_FOURCC('Y', '1', '0', ' ')
++#define MMAL_ENCODING_Y12     MMAL_FOURCC('Y', '1', '2', ' ')
++#define MMAL_ENCODING_Y14     MMAL_FOURCC('Y', '1', '4', ' ')
+ 
+ /** An EGL image handle
+  */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0327-staging-bcm2835-codec-Add-the-unpacked-16bpp-raw-for.patch b/target/linux/bcm27xx/patches-5.15/950-0327-staging-bcm2835-codec-Add-the-unpacked-16bpp-raw-for.patch
new file mode 100644
index 0000000000..221b01db03
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0327-staging-bcm2835-codec-Add-the-unpacked-16bpp-raw-for.patch
@@ -0,0 +1,167 @@
+From 0bc0dd69488ae3e0ef593596586d84639b93bf4d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 7 Jan 2021 10:45:16 +0000
+Subject: [PATCH] staging/bcm2835-codec: Add the unpacked (16bpp) raw
+ formats
+
+Now that the firmware supports the unpacked (16bpp) variants
+of the MIPI raw formats, add the mappings.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 128 +++++++++++++++++-
+ 1 file changed, 126 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -381,6 +381,106 @@ static const struct bcm2835_codec_fmt su
+ 		.size_multiplier_x2	= 2,
+ 		.is_bayer		= true,
+ 	}, {
++		/* Bayer formats unpacked to 16bpp */
++		/* 10 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB10,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB10,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR10,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR10,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG10,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG10,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG10,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG10,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		/* 12 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB12,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB12,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR12,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR12,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG12,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG12,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG12,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG12,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		/* 14 bit */
++		.fourcc			= V4L2_PIX_FMT_SRGGB14,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB14,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SBGGR14,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR14,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGRBG14,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG14,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
++		.fourcc			= V4L2_PIX_FMT_SGBRG14,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG14,
++		.size_multiplier_x2	= 2,
++		.is_bayer		= true,
++	}, {
+ 		/* Monochrome MIPI formats */
+ 		/* 8 bit */
+ 		.fourcc			= V4L2_PIX_FMT_GREY,
+@@ -422,6 +522,30 @@ static const struct bcm2835_codec_fmt su
+ 		.mmal_fmt		= MMAL_ENCODING_Y16,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
++		/* 10 bit as 16bpp */
++		.fourcc			= V4L2_PIX_FMT_Y10,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_Y10,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* 12 bit as 16bpp */
++		.fourcc			= V4L2_PIX_FMT_Y12,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_Y12,
++		.size_multiplier_x2	= 2,
++	}, {
++		/* 14 bit as 16bpp */
++		.fourcc			= V4L2_PIX_FMT_Y14,
++		.depth			= 16,
++		.bytesperline_align	= 32,
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_Y14,
++		.size_multiplier_x2	= 2,
++	}, {
+ 		/* Compressed formats */
+ 		.fourcc			= V4L2_PIX_FMT_H264,
+ 		.depth			= 0,
+@@ -2681,10 +2805,10 @@ static const struct v4l2_m2m_ops m2m_ops
+ 
+ /* Size of the array to provide to the VPU when asking for the list of supported
+  * formats.
+- * The ISP component currently advertises 44 input formats, so add a small
++ * The ISP component currently advertises 62 input formats, so add a small
+  * overhead on that.
+  */
+-#define MAX_SUPPORTED_ENCODINGS 50
++#define MAX_SUPPORTED_ENCODINGS 70
+ 
+ /* Populate dev->supported_fmts with the formats supported by those ports. */
+ static int bcm2835_codec_get_supported_fmts(struct bcm2835_codec_dev *dev)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0328-staging-bcm2835-codec-Log-the-number-of-excess-suppo.patch b/target/linux/bcm27xx/patches-5.15/950-0328-staging-bcm2835-codec-Log-the-number-of-excess-suppo.patch
new file mode 100644
index 0000000000..25ed1950a4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0328-staging-bcm2835-codec-Log-the-number-of-excess-suppo.patch
@@ -0,0 +1,43 @@
+From e575bca2b5e1e44a23b435711219e3941878dcb4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 7 Jan 2021 11:41:26 +0000
+Subject: [PATCH] staging/bcm2835-codec: Log the number of excess
+ supported formats
+
+When logging that the firmware has provided more supported formats
+than we had allocated storage for, log the number allocated and
+returned.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -2836,8 +2836,10 @@ static int bcm2835_codec_get_supported_f
+ 
+ 	if (ret) {
+ 		if (ret == MMAL_MSG_STATUS_ENOSPC) {
+-			v4l2_err(&dev->v4l2_dev, "%s: port has more encoding than we provided space for. Some are dropped.\n",
+-				 __func__);
++			v4l2_err(&dev->v4l2_dev,
++				 "%s: port has more encodings than we provided space for. Some are dropped (%u vs %u).\n",
++				 __func__, param_size / sizeof(u32),
++				 MAX_SUPPORTED_ENCODINGS);
+ 			num_encodings = MAX_SUPPORTED_ENCODINGS;
+ 		} else {
+ 			v4l2_err(&dev->v4l2_dev, "%s: get_param ret %u.\n",
+@@ -2880,8 +2882,10 @@ static int bcm2835_codec_get_supported_f
+ 
+ 	if (ret) {
+ 		if (ret == MMAL_MSG_STATUS_ENOSPC) {
+-			v4l2_err(&dev->v4l2_dev, "%s: port has more encoding than we provided space for. Some are dropped.\n",
+-				 __func__);
++			v4l2_err(&dev->v4l2_dev,
++				 "%s: port has more encodings than we provided space for. Some are dropped (%u vs %u).\n",
++				 __func__, param_size / sizeof(u32),
++				 MAX_SUPPORTED_ENCODINGS);
+ 			num_encodings = MAX_SUPPORTED_ENCODINGS;
+ 		} else {
+ 			ret = -EINVAL;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0329-staging-bcm2835-isp-Add-the-unpacked-16bpp-raw-forma.patch b/target/linux/bcm27xx/patches-5.15/950-0329-staging-bcm2835-isp-Add-the-unpacked-16bpp-raw-forma.patch
new file mode 100644
index 0000000000..6b65719620
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0329-staging-bcm2835-isp-Add-the-unpacked-16bpp-raw-forma.patch
@@ -0,0 +1,174 @@
+From d46516b6a36cd68548eccc8612ece0cca934a689 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 7 Jan 2021 11:37:10 +0000
+Subject: [PATCH] staging/bcm2835-isp: Add the unpacked (16bpp) raw
+ formats
+
+Now that the firmware supports the unpacked (16bpp) variants
+of the MIPI raw formats, add the mappings.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-isp/bcm2835-isp-fmts.h            | 127 ++++++++++++++++++
+ .../bcm2835-isp/bcm2835-v4l2-isp.c            |   4 +-
+ 2 files changed, 129 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
+@@ -298,6 +298,106 @@ static const struct bcm2835_isp_fmt supp
+ 		.colorspace	    = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
++		/* Bayer formats unpacked to 16bpp */
++		/* 10 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB10,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB10,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR10,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR10,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG10,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG10,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG10,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG10,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 12 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB12,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB12,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR12,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR12,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG12,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG12,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG12,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG12,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 14 bit */
++		.fourcc		    = V4L2_PIX_FMT_SRGGB14,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB14,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SBGGR14,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR14,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGRBG14,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG14,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		.fourcc		    = V4L2_PIX_FMT_SGBRG14,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG14,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
+ 		/* Monochrome MIPI formats */
+ 		/* 8 bit */
+ 		.fourcc		    = V4L2_PIX_FMT_GREY,
+@@ -343,6 +443,33 @@ static const struct bcm2835_isp_fmt supp
+ 		.size_multiplier_x2 = 2,
+ 		.colorspace	    = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
++	}, {
++		/* 10 bit as 16bpp */
++		.fourcc		    = V4L2_PIX_FMT_Y10,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_Y10,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 12 bit as 16bpp */
++		.fourcc		    = V4L2_PIX_FMT_Y12,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_Y12,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
++	}, {
++		/* 14 bit as 16bpp */
++		.fourcc		    = V4L2_PIX_FMT_Y14,
++		.depth		    = 16,
++		.bytesperline_align = 32,
++		.mmal_fmt	    = MMAL_ENCODING_Y14,
++		.size_multiplier_x2 = 2,
++		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_META_FMT_BCM2835_ISP_STATS,
+ 		.mmal_fmt	    = MMAL_ENCODING_BRCM_STATS,
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -1146,11 +1146,11 @@ static const struct v4l2_ioctl_ops bcm28
+  * Size of the array to provide to the VPU when asking for the list of supported
+  * formats.
+  *
+- * The ISP component currently advertises 44 input formats, so add a small
++ * The ISP component currently advertises 62 input formats, so add a small
+  * overhead on that. Should the component advertise more formats then the excess
+  * will be dropped and a warning logged.
+  */
+-#define MAX_SUPPORTED_ENCODINGS 50
++#define MAX_SUPPORTED_ENCODINGS 70
+ 
+ /* Populate node->supported_fmts with the formats supported by those ports. */
+ static int bcm2835_isp_get_supported_fmts(struct bcm2835_isp_node *node)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0330-staging-bcm2835-isp-Log-the-number-of-excess-support.patch b/target/linux/bcm27xx/patches-5.15/950-0330-staging-bcm2835-isp-Log-the-number-of-excess-support.patch
new file mode 100644
index 0000000000..b3f1a0a9e1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0330-staging-bcm2835-isp-Log-the-number-of-excess-support.patch
@@ -0,0 +1,29 @@
+From 657f3650ee955677d747fb3514280ef413394871 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 7 Jan 2021 11:43:22 +0000
+Subject: [PATCH] staging/bcm2835-isp: Log the number of excess
+ supported formats
+
+When logging that the firmware has provided more supported formats
+than we had allocated storage for, log the number allocated and
+returned.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -1169,8 +1169,9 @@ static int bcm2835_isp_get_supported_fmt
+ 	if (ret) {
+ 		if (ret == MMAL_MSG_STATUS_ENOSPC) {
+ 			v4l2_err(&dev->v4l2_dev,
+-				 "%s: port has more encoding than we provided space for. Some are dropped.\n",
+-				 __func__);
++				 "%s: port has more encodings than we provided space for. Some are dropped (%u vs %u).\n",
++				 __func__, param_size / sizeof(u32),
++				 MAX_SUPPORTED_ENCODINGS);
+ 			num_encodings = MAX_SUPPORTED_ENCODINGS;
+ 		} else {
+ 			v4l2_err(&dev->v4l2_dev, "%s: get_param ret %u.\n",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0331-bcm2835-dma-Avoid-losing-CS-flags-after-interrupt.patch b/target/linux/bcm27xx/patches-5.15/950-0331-bcm2835-dma-Avoid-losing-CS-flags-after-interrupt.patch
new file mode 100644
index 0000000000..b014677284
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0331-bcm2835-dma-Avoid-losing-CS-flags-after-interrupt.patch
@@ -0,0 +1,21 @@
+From fa6d833fecd73b56de962f8538a2cd62bfca59ae Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Wed, 6 Jan 2021 18:16:10 +0000
+Subject: [PATCH] bcm2835-dma: Avoid losing CS flags after interrupt
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/dma/bcm2835-dma.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -704,7 +704,7 @@ static irqreturn_t bcm2835_dma_callback(
+ 	 * if this IRQ handler is threaded.) If the channel is finished, it
+ 	 * will remain idle despite the ACTIVE flag being set.
+ 	 */
+-	writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE,
++	writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq),
+ 	       c->chan_base + BCM2835_DMA_CS);
+ 
+ 	d = c->desc;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0332-arch-arm-Add-__memset-alias-to-memset_rpi.S.patch b/target/linux/bcm27xx/patches-5.15/950-0332-arch-arm-Add-__memset-alias-to-memset_rpi.S.patch
new file mode 100644
index 0000000000..2a2798a540
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0332-arch-arm-Add-__memset-alias-to-memset_rpi.S.patch
@@ -0,0 +1,33 @@
+From f6b2421dd93a7eee29b58816cf7d3c1811dab9f9 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 8 Jan 2021 13:37:25 +0000
+Subject: [PATCH] arch/arm: Add __memset alias to memset_rpi.S
+
+memset_rpi.S is an optimised memset implementation, but doesn't define
+__memset (which was just added to memset.S). As a result, building
+for the BCM2835 platform causes a link failure.
+
+Add __memset as yet another alias to our common implementation.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/lib/memset_rpi.S | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/arch/arm/lib/memset_rpi.S
++++ b/arch/arm/lib/memset_rpi.S
+@@ -52,6 +52,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+  */
+ ENTRY(mmioset)
+ ENTRY(memset)
++ENTRY(__memset)
+ ENTRY(__memset32)
+ ENTRY(__memset64)
+ 
+@@ -124,5 +125,6 @@ ENTRY(__memset64)
+         .unreq  DAT3
+ ENDPROC(__memset64)
+ ENDPROC(__memset32)
++ENDPROC(__memset)
+ ENDPROC(memset)
+ ENDPROC(mmioset)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0333-bcm2835-dma-Add-bcm2835-dma-Add-DMA_WIDE_SOURCE-and-.patch b/target/linux/bcm27xx/patches-5.15/950-0333-bcm2835-dma-Add-bcm2835-dma-Add-DMA_WIDE_SOURCE-and-.patch
new file mode 100644
index 0000000000..a9412f75db
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0333-bcm2835-dma-Add-bcm2835-dma-Add-DMA_WIDE_SOURCE-and-.patch
@@ -0,0 +1,64 @@
+From 62968215a2ebb438ca46d91b714c29803d88f8e0 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Wed, 30 Dec 2020 14:51:29 +0000
+Subject: [PATCH] bcm2835-dma: Add bcm2835-dma: Add DMA_WIDE_SOURCE and
+ DMA_WIDE_DEST flags
+
+Use (reserved) bits 24 and 25 of the dreq value
+(the second cell of the DT DMA descriptor) to request
+that wide source reads or wide dest writes are required
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/dma/bcm2835-dma.c | 19 ++++++++++++++++---
+ 1 file changed, 16 insertions(+), 3 deletions(-)
+
+--- a/drivers/dma/bcm2835-dma.c
++++ b/drivers/dma/bcm2835-dma.c
+@@ -171,6 +171,17 @@ struct bcm2835_desc {
+ #define WAIT_RESP(x) ((x & BCM2835_DMA_NO_WAIT_RESP) ? \
+ 		      0 : BCM2835_DMA_WAIT_RESP)
+ 
++/* A fake bit to request that the driver requires wide reads */
++#define BCM2835_DMA_WIDE_SOURCE BIT(24)
++#define WIDE_SOURCE(x) ((x & BCM2835_DMA_WIDE_SOURCE) ? \
++		      BCM2835_DMA_S_WIDTH : 0)
++
++/* A fake bit to request that the driver requires wide writes */
++#define BCM2835_DMA_WIDE_DEST BIT(25)
++#define WIDE_DEST(x) ((x & BCM2835_DMA_WIDE_DEST) ? \
++		      BCM2835_DMA_D_WIDTH : 0)
++
++
+ /* debug register bits */
+ #define BCM2835_DMA_DEBUG_LAST_NOT_SET_ERR	BIT(0)
+ #define BCM2835_DMA_DEBUG_FIFO_ERR		BIT(1)
+@@ -850,7 +861,8 @@ static struct dma_async_tx_descriptor *b
+ {
+ 	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	struct bcm2835_desc *d;
+-	u32 info = BCM2835_DMA_D_INC | BCM2835_DMA_S_INC;
++	u32 info = BCM2835_DMA_D_INC | BCM2835_DMA_S_INC |
++		   WIDE_SOURCE(c->dreq) | WIDE_DEST(c->dreq);
+ 	u32 extra = BCM2835_DMA_INT_EN | WAIT_RESP(c->dreq);
+ 	size_t max_len = bcm2835_dma_max_frame_length(c);
+ 	size_t frames;
+@@ -881,7 +893,8 @@ static struct dma_async_tx_descriptor *b
+ 	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	struct bcm2835_desc *d;
+ 	dma_addr_t src = 0, dst = 0;
+-	u32 info = WAIT_RESP(c->dreq);
++	u32 info = WAIT_RESP(c->dreq) |
++		   WIDE_SOURCE(c->dreq) | WIDE_DEST(c->dreq);
+ 	u32 extra = BCM2835_DMA_INT_EN;
+ 	size_t frames;
+ 
+@@ -943,7 +956,7 @@ static struct dma_async_tx_descriptor *b
+ 	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+ 	struct bcm2835_desc *d;
+ 	dma_addr_t src, dst;
+-	u32 info = WAIT_RESP(c->dreq);
++	u32 info = WAIT_RESP(c->dreq) | WIDE_SOURCE(c->dreq) | WIDE_DEST(c->dreq);
+ 	u32 extra = 0;
+ 	size_t max_len = bcm2835_dma_max_frame_length(c);
+ 	size_t frames;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0334-uapi-bcm2835-isp-Add-colour-denoise-configuration.patch b/target/linux/bcm27xx/patches-5.15/950-0334-uapi-bcm2835-isp-Add-colour-denoise-configuration.patch
new file mode 100644
index 0000000000..eee036cd69
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0334-uapi-bcm2835-isp-Add-colour-denoise-configuration.patch
@@ -0,0 +1,56 @@
+From 63bd537b461480cd054a8d26be2ba7c85066f22b Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 14 Jan 2021 09:18:42 +0000
+Subject: [PATCH] uapi: bcm2835-isp: Add colour denoise configuration
+
+Add a configuration structure for colour denoise to the bcm2835_isp
+driver.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ include/uapi/linux/bcm2835-isp.h | 27 +++++++++++++++++++++++++++
+ 1 file changed, 27 insertions(+)
+
+--- a/include/uapi/linux/bcm2835-isp.h
++++ b/include/uapi/linux/bcm2835-isp.h
+@@ -31,6 +31,8 @@
+ 				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0007)
+ #define V4L2_CID_USER_BCM2835_ISP_DPC		\
+ 				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0008)
++#define V4L2_CID_USER_BCM2835_ISP_CDN \
++				(V4L2_CID_USER_BCM2835_ISP_BASE + 0x0009)
+ 
+ /*
+  * All structs below are directly mapped onto the equivalent structs in
+@@ -176,6 +178,31 @@ struct bcm2835_isp_gamma {
+ };
+ 
+ /**
++ * enum bcm2835_isp_cdn_mode - Mode of operation for colour denoise.
++ *
++ * @CDN_MODE_FAST:		Fast (but lower quality) colour denoise
++ *				algorithm, typically used for video recording.
++ * @CDN_HIGH_QUALITY:		High quality (but slower) colour denoise
++ *				algorithm, typically used for stills capture.
++ */
++enum bcm2835_isp_cdn_mode {
++	CDN_MODE_FAST = 0,
++	CDN_MODE_HIGH_QUALITY = 1,
++};
++
++/**
++ * struct bcm2835_isp_cdn - Colour denoise parameters set with the
++ *			    V4L2_CID_USER_BCM2835_ISP_CDN ctrl.
++ *
++ * @enabled:	Enable colour denoise.
++ * @mode:	Colour denoise operating mode (see enum &bcm2835_isp_cdn_mode)
++ */
++struct bcm2835_isp_cdn {
++	__u32 enabled;
++	__u32 mode;
++};
++
++/**
+  * struct bcm2835_isp_denoise - Denoise parameters set with the
+  *				V4L2_CID_USER_BCM2835_ISP_DENOISE ctrl.
+  *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0335-staging-vc04_services-ISP-Add-colour-denoise-control.patch b/target/linux/bcm27xx/patches-5.15/950-0335-staging-vc04_services-ISP-Add-colour-denoise-control.patch
new file mode 100644
index 0000000000..42917b93c7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0335-staging-vc04_services-ISP-Add-colour-denoise-control.patch
@@ -0,0 +1,75 @@
+From 21e7514e0fcc8036c675aa8e916fca8c8522b58d Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 14 Jan 2021 09:20:52 +0000
+Subject: [PATCH] staging: vc04_services: ISP: Add colour denoise
+ control
+
+Add colour denoise control to the bcm2835 driver through a new v4l2
+control: V4L2_CID_USER_BCM2835_ISP_CDN.
+
+Add the accompanying MMAL configuration structure definitions as well.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-isp/bcm2835-isp-ctrls.h   |  5 +++++
+ .../vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c    |  5 +++++
+ .../vc04_services/vchiq-mmal/mmal-parameters.h      | 13 +++++++++++++
+ 3 files changed, 23 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-ctrls.h
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-ctrls.h
+@@ -57,6 +57,11 @@ static const struct bcm2835_isp_custom_c
+ 		.size	= sizeof(struct bcm2835_isp_denoise),
+ 		.flags  = 0
+ 	}, {
++		.name	= "Colour Denoise",
++		.id	= V4L2_CID_USER_BCM2835_ISP_CDN,
++		.size	= sizeof(struct bcm2835_isp_cdn),
++		.flags  = 0
++	}, {
+ 		.name	= "Defective Pixel Correction",
+ 		.id	= V4L2_CID_USER_BCM2835_ISP_DPC,
+ 		.size	= sizeof(struct bcm2835_isp_dpc),
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -764,6 +764,11 @@ static int bcm2835_isp_s_ctrl(struct v4l
+ 				    ctrl->p_new.p_u8,
+ 				    sizeof(struct bcm2835_isp_denoise));
+ 		break;
++	case V4L2_CID_USER_BCM2835_ISP_CDN:
++		ret = set_isp_param(node, MMAL_PARAMETER_CDN,
++				    ctrl->p_new.p_u8,
++				    sizeof(struct bcm2835_isp_cdn));
++		break;
+ 	case V4L2_CID_USER_BCM2835_ISP_SHARPEN:
+ 		ret = set_isp_param(node, MMAL_PARAMETER_SHARPEN,
+ 				    ctrl->p_new.p_u8,
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -277,6 +277,8 @@ enum mmal_parameter_camera_type {
+ 	MMAL_PARAMETER_DPC,
+ 		/**< Tales a @ref MMAP_PARAMETER_GAMMA_T */
+ 	MMAL_PARAMETER_GAMMA,
++		/**< Takes a @ref MMAL_PARAMETER_CDN_T */
++	MMAL_PARAMETER_CDN,
+ };
+ 
+ struct mmal_parameter_rational {
+@@ -913,6 +915,17 @@ struct mmal_parameter_gamma {
+ 	u16 y[MMAL_NUM_GAMMA_PTS];
+ };
+ 
++enum mmal_parameter_cdn_mode {
++	MMAL_PARAM_CDN_FAST = 0,
++	MMAL_PARAM_CDN_HIGH_QUALITY = 1,
++	MMAL_PARAM_CDN_DUMMY  = 0x7FFFFFFF
++};
++
++struct mmal_parameter_colour_denoise {
++	u32 enabled;
++	enum mmal_parameter_cdn_mode mode;
++};
++
+ struct mmal_parameter_denoise {
+ 	u32 enabled;
+ 	u32 constant;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0336-spi-bcm2835-Workaround-fix-for-zero-length-transfers.patch b/target/linux/bcm27xx/patches-5.15/950-0336-spi-bcm2835-Workaround-fix-for-zero-length-transfers.patch
new file mode 100644
index 0000000000..3b4946f241
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0336-spi-bcm2835-Workaround-fix-for-zero-length-transfers.patch
@@ -0,0 +1,50 @@
+From 72742fb9d06e6c931738de020bc6bbd98c6829f7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 28 Jan 2021 11:30:04 +0000
+Subject: [PATCH] spi: bcm2835: Workaround/fix for zero-length
+ transfers
+
+A relatively recent commit ([1]) contained optimisation for the PIO
+SPI FIFO-filling functions. The commit message includes the phrase
+"[t]he blind and counted loops are always called with nonzero count".
+This is technically true, but it is still possible for count to become
+zero before the loop is entered - if tfr->len is zero. Moving the loop
+exit condition to the end of the loop saves a few cycles, but results
+in a near-infinite loop should the revised count be zero on entry.
+
+Strangely, zero-lengthed transfers aren't filtered by the SPI framework
+and, even more strangely, the Python3 spidev library is triggering them
+for no obvious reason.
+
+Avoid the problem completely by bailing out of the main transfer
+function early if trf->len is zero, although there may be a case for
+moving the mitigation into the framework.
+
+See: https://github.com/raspberrypi/linux/issues/4100
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+[1] 26751de25d25 ("spi: bcm2835: Micro-optimise FIFO loops")
+---
+ drivers/spi/spi-bcm2835.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/spi/spi-bcm2835.c
++++ b/drivers/spi/spi-bcm2835.c
+@@ -1055,6 +1055,16 @@ static int bcm2835_spi_transfer_one(stru
+ 	unsigned long hz_per_byte, byte_limit;
+ 	u32 cs = slv->prepare_cs;
+ 
++	if (unlikely(!tfr->len)) {
++		static int warned;
++
++		if (!warned)
++			dev_warn(&spi->dev,
++				 "zero-length SPI transfer ignored\n");
++		warned = 1;
++		return 0;
++	}
++
+ 	/* set clock */
+ 	spi_hz = tfr->speed_hz;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0337-kbuild-Silence-unavoidable-dtc-overlay-warnings.patch b/target/linux/bcm27xx/patches-5.15/950-0337-kbuild-Silence-unavoidable-dtc-overlay-warnings.patch
new file mode 100644
index 0000000000..814594d5ee
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0337-kbuild-Silence-unavoidable-dtc-overlay-warnings.patch
@@ -0,0 +1,31 @@
+From a940e0dff79259844e576ad6604ce00dee976c6c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 29 Jan 2021 10:34:11 +0000
+Subject: [PATCH] kbuild: Silence unavoidable dtc overlay warnings
+
+Much effort has been put into finding ways to avoid warnings from dtc
+about overlays, usually to do with the presence of #address-cells and
+size-cells, but not exclusively so. Since the issues being warned about
+are harmless, suppress the warnings to declutter the build output and
+to avoid alarming users.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ scripts/Makefile.lib | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/scripts/Makefile.lib
++++ b/scripts/Makefile.lib
+@@ -380,6 +380,12 @@ cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ;
+ 	$(DTC) -@ -H epapr -O dtb -o $@ -b 0 \
+ 		-i $(dir $<) $(DTC_FLAGS) \
+ 		-Wno-interrupts_property \
++		-Wno-label_is_string \
++		-Wno-reg_format \
++		-Wno-pci_device_bus_num \
++		-Wno-i2c_bus_reg \
++		-Wno-spi_bus_reg \
++		-Wno-avoid_default_addr_size \
+ 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
+ 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0338-media-i2c-imx290-Replace-V4L2_CID_GAIN-with-V4L2_CID.patch b/target/linux/bcm27xx/patches-5.15/950-0338-media-i2c-imx290-Replace-V4L2_CID_GAIN-with-V4L2_CID.patch
new file mode 100644
index 0000000000..f99cd4e99c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0338-media-i2c-imx290-Replace-V4L2_CID_GAIN-with-V4L2_CID.patch
@@ -0,0 +1,38 @@
+From 8999614346ab0bbbd9ddd0798222edef7bce6b47 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 4 Feb 2021 17:29:32 +0000
+Subject: [PATCH] media: i2c: imx290: Replace V4L2_CID_GAIN with
+ V4L2_CID_ANALOGUE_GAIN
+
+Most software (including libcamera) requires V4L2_CID_ANALOGUE_GAIN,
+not V4L2_CID_GAIN.
+
+The range for the control is 0 to 100 for which the sensor uses only
+analogue gain; higher values would involve digital gain which this
+control should not apply.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -647,7 +647,7 @@ static int imx290_set_ctrl(struct v4l2_c
+ 		return 0;
+ 
+ 	switch (ctrl->id) {
+-	case V4L2_CID_GAIN:
++	case V4L2_CID_ANALOGUE_GAIN:
+ 		ret = imx290_set_gain(imx290, ctrl->val);
+ 		break;
+ 	case V4L2_CID_EXPOSURE:
+@@ -1327,7 +1327,7 @@ static int imx290_probe(struct i2c_clien
+ 	v4l2_ctrl_handler_init(&imx290->ctrls, 4);
+ 
+ 	v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+-			  V4L2_CID_GAIN, 0, 238, 1, 0);
++			  V4L2_CID_ANALOGUE_GAIN, 0, 100, 1, 0);
+ 
+ 	mode = imx290->current_mode;
+ 	imx290->hblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0339-media-i2c-imx290-Fix-number-of-controls-in-v4l2_ctrl.patch b/target/linux/bcm27xx/patches-5.15/950-0339-media-i2c-imx290-Fix-number-of-controls-in-v4l2_ctrl.patch
new file mode 100644
index 0000000000..970099d3fa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0339-media-i2c-imx290-Fix-number-of-controls-in-v4l2_ctrl.patch
@@ -0,0 +1,28 @@
+From 8ec3be7296445f9958e732274676db8b8af372cd Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 4 Feb 2021 21:21:44 +0000
+Subject: [PATCH] media: i2c: imx290: Fix number of controls in
+ v4l2_ctrl_handler_init
+
+The number is only a hint, but may as well be correct.
+
+Fixes: 471e0029e98aa ("media: i2c: imx290: Convert HMAX setting into V4L2_CID_HBLANK")
+Fixes: be0b9b7ad1c27 ("media: i2c: imx290: Add support for V4L2_CID_VBLANK")
+Fixes: 8483f0d7599aa ("media: i2c: imx290: Add exposure control to the driver.")
+Fixes: 9764f3459c401 ("media: i2c: imx290: Add H and V flip controls")
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -1324,7 +1324,7 @@ static int imx290_probe(struct i2c_clien
+ 	 */
+ 	imx290_entity_init_cfg(&imx290->sd, NULL);
+ 
+-	v4l2_ctrl_handler_init(&imx290->ctrls, 4);
++	v4l2_ctrl_handler_init(&imx290->ctrls, 9);
+ 
+ 	v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+ 			  V4L2_CID_ANALOGUE_GAIN, 0, 100, 1, 0);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0340-dt-binding-display-bcm2711-hdmi-Add-CEC-and-hotplug-.patch b/target/linux/bcm27xx/patches-5.15/950-0340-dt-binding-display-bcm2711-hdmi-Add-CEC-and-hotplug-.patch
new file mode 100644
index 0000000000..36c739c758
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0340-dt-binding-display-bcm2711-hdmi-Add-CEC-and-hotplug-.patch
@@ -0,0 +1,26 @@
+From 8c0e1c141dfba089992f63b5d58218240d009ad7 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 11 Jan 2021 15:23:07 +0100
+Subject: [PATCH] dt-binding: display: bcm2711-hdmi: Add CEC and
+ hotplug interrupts
+
+The CEC and hotplug interrupts were missing when that binding was
+introduced, let's add them in now that we've figured out how it works.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Acked-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../devicetree/bindings/display/brcm,bcm2711-hdmi.yaml          | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
++++ b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
+@@ -109,7 +109,7 @@ required:
+   - resets
+   - ddc
+ 
+-additionalProperties: false
++unevaluatedProperties: false
+ 
+ examples:
+   - |
diff --git a/target/linux/bcm27xx/patches-5.15/950-0341-staging-bcm2835-camera-Fix-the-cherry-pick-of-AWB-Gr.patch b/target/linux/bcm27xx/patches-5.15/950-0341-staging-bcm2835-camera-Fix-the-cherry-pick-of-AWB-Gr.patch
new file mode 100644
index 0000000000..d54429dee8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0341-staging-bcm2835-camera-Fix-the-cherry-pick-of-AWB-Gr.patch
@@ -0,0 +1,28 @@
+From 9d7d075f7290451f6fe43e754780fa4eef6b0877 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 8 Feb 2021 11:48:35 +0000
+Subject: [PATCH] staging:bcm2835-camera: Fix the cherry-pick of AWB
+ Greyworld
+
+The cherry-pick of the patch that added the greyworld AWB mode
+was incomplete. Fix it up.
+
+Fixes: b3ef481fe243 "staging: bcm2835-camera: Add greyworld AWB mode"
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-camera/controls.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/controls.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c
+@@ -1056,8 +1056,8 @@ static const struct bm2835_mmal_v4l2_ctr
+ 	{
+ 		.id = V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
+ 		.type = MMAL_CONTROL_TYPE_STD_MENU,
+-		.min = ~0x3ff,
+-		.max = V4L2_WHITE_BALANCE_SHADE,
++		.min = ~0x7ff,
++		.max = V4L2_WHITE_BALANCE_GREYWORLD,
+ 		.def = V4L2_WHITE_BALANCE_AUTO,
+ 		.step = 0,
+ 		.imenu = NULL,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0342-bcm2835-isp-Allow-formats-with-different-colour-spac.patch b/target/linux/bcm27xx/patches-5.15/950-0342-bcm2835-isp-Allow-formats-with-different-colour-spac.patch
new file mode 100644
index 0000000000..1c6b75b987
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0342-bcm2835-isp-Allow-formats-with-different-colour-spac.patch
@@ -0,0 +1,712 @@
+From 75db566a22b4b887f50b2e70254b5f49e4318940 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 12 Jan 2021 13:55:39 +0000
+Subject: [PATCH] bcm2835-isp: Allow formats with different colour
+ spaces.
+
+Each supported format now includes a mask showing the allowed colour
+spaces, as well as a default colour space for when one was not
+specified.
+
+Additionally we translate the colour space to mmal format and pass it
+over to the VideoCore.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ .../bcm2835-isp/bcm2835-isp-fmts.h            | 180 ++++++++++++------
+ .../bcm2835-isp/bcm2835-v4l2-isp.c            |  66 ++++++-
+ 2 files changed, 190 insertions(+), 56 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
+@@ -20,10 +20,29 @@ struct bcm2835_isp_fmt {
+ 	int bytesperline_align;
+ 	u32 mmal_fmt;
+ 	int size_multiplier_x2;
+-	enum v4l2_colorspace colorspace;
++	u32 colorspace_mask;
++	enum v4l2_colorspace colorspace_default;
+ 	unsigned int step_size;
+ };
+ 
++#define V4L2_COLORSPACE_MASK(colorspace) BIT(colorspace)
++
++#define V4L2_COLORSPACE_MASK_JPEG V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_JPEG)
++#define V4L2_COLORSPACE_MASK_SMPTE170M V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SMPTE170M)
++#define V4L2_COLORSPACE_MASK_REC709 V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_REC709)
++#define V4L2_COLORSPACE_MASK_SRGB V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SRGB)
++#define V4L2_COLORSPACE_MASK_RAW V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_RAW)
++
++/*
++ * The colour spaces we support for YUV outputs. SRGB features here because,
++ * once you assign the default transfer func and so on, it and JPEG effectively
++ * mean the same.
++ */
++#define V4L2_COLORSPACE_MASK_YUV (V4L2_COLORSPACE_MASK_JPEG | \
++				  V4L2_COLORSPACE_MASK_SRGB | \
++				  V4L2_COLORSPACE_MASK_SMPTE170M | \
++				  V4L2_COLORSPACE_MASK_REC709)
++
+ static const struct bcm2835_isp_fmt supported_formats[] = {
+ 	{
+ 		/* YUV formats */
+@@ -32,7 +51,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_I420,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_JPEG,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_YVU420,
+@@ -40,7 +60,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_YV12,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_NV12,
+@@ -48,7 +69,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_NV12,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_NV21,
+@@ -56,7 +78,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_NV21,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_YUYV,
+@@ -64,7 +87,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_YUYV,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_UYVY,
+@@ -72,7 +96,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_UYVY,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_YVYU,
+@@ -80,7 +105,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_YVYU,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_VYUY,
+@@ -88,7 +114,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_VYUY,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SMPTE170M,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* RGB formats */
+@@ -97,7 +124,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_RGB24,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_RGB565,
+@@ -105,7 +133,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_RGB16,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_BGR24,
+@@ -113,7 +142,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BGR24,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_XBGR32,
+@@ -121,7 +151,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_BGRA,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_RGBX32,
+@@ -129,7 +160,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_RGBA,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+ 		/* Bayer formats */
+@@ -139,7 +171,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB8,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR8,
+@@ -147,7 +180,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR8,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG8,
+@@ -155,7 +189,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG8,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG8,
+@@ -163,7 +198,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG8,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 10 bit */
+@@ -172,7 +208,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB10P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR10P,
+@@ -180,7 +217,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR10P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG10P,
+@@ -188,7 +226,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG10P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG10P,
+@@ -196,7 +235,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG10P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 12 bit */
+@@ -205,7 +245,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB12P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR12P,
+@@ -213,7 +254,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR12P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG12P,
+@@ -221,7 +263,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG12P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG12P,
+@@ -229,7 +272,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG12P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 14 bit */
+@@ -238,7 +282,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB14P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR14P,
+@@ -246,7 +291,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR14P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG14P,
+@@ -254,7 +300,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG14P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG14P,
+@@ -262,7 +309,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG14P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 16 bit */
+@@ -271,7 +319,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB16,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR16,
+@@ -279,7 +328,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR16,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG16,
+@@ -287,7 +337,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG16,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG16,
+@@ -295,7 +346,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG16,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* Bayer formats unpacked to 16bpp */
+@@ -305,7 +357,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB10,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR10,
+@@ -313,7 +366,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR10,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG10,
+@@ -321,7 +375,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG10,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG10,
+@@ -329,7 +384,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG10,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 12 bit */
+@@ -338,7 +394,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB12,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR12,
+@@ -346,7 +403,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR12,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG12,
+@@ -354,7 +412,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG12,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG12,
+@@ -362,7 +421,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG12,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 14 bit */
+@@ -371,7 +431,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SRGGB14,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SBGGR14,
+@@ -379,7 +440,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SBGGR14,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGRBG14,
+@@ -387,7 +449,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGRBG14,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_SGBRG14,
+@@ -395,7 +458,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BAYER_SGBRG14,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* Monochrome MIPI formats */
+@@ -405,7 +469,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_GREY,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 10 bit */
+@@ -414,7 +479,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_Y10P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 12 bit */
+@@ -423,7 +489,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_Y12P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 14 bit */
+@@ -432,7 +499,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_Y14P,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 16 bit */
+@@ -441,7 +509,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_Y16,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 10 bit as 16bpp */
+@@ -450,7 +519,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_Y10,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 12 bit as 16bpp */
+@@ -459,7 +529,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_Y12,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		/* 14 bit as 16bpp */
+@@ -468,7 +539,8 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_Y14,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace	    = V4L2_COLORSPACE_RAW,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_RAW,
++		.colorspace_default = V4L2_COLORSPACE_RAW,
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_META_FMT_BCM2835_ISP_STATS,
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -72,6 +72,7 @@ struct bcm2835_isp_q_data {
+ 	unsigned int width;
+ 	unsigned int height;
+ 	unsigned int sizeimage;
++	enum v4l2_colorspace colorspace;
+ 	const struct bcm2835_isp_fmt *fmt;
+ };
+ 
+@@ -311,6 +312,43 @@ static void mmal_buffer_cb(struct vchiq_
+ 		complete(&dev->frame_cmplt);
+ }
+ 
++struct colorspace_translation {
++	enum v4l2_colorspace v4l2_value;
++	u32 mmal_value;
++};
++
++static u32 translate_color_space(enum v4l2_colorspace color_space)
++{
++	static const struct colorspace_translation translations[] = {
++		{ V4L2_COLORSPACE_DEFAULT, MMAL_COLOR_SPACE_UNKNOWN },
++		{ V4L2_COLORSPACE_SMPTE170M, MMAL_COLOR_SPACE_ITUR_BT601 },
++		{ V4L2_COLORSPACE_SMPTE240M, MMAL_COLOR_SPACE_SMPTE240M },
++		{ V4L2_COLORSPACE_REC709, MMAL_COLOR_SPACE_ITUR_BT709 },
++		/* V4L2_COLORSPACE_BT878 unavailable */
++		{ V4L2_COLORSPACE_470_SYSTEM_M, MMAL_COLOR_SPACE_BT470_2_M },
++		{ V4L2_COLORSPACE_470_SYSTEM_BG, MMAL_COLOR_SPACE_BT470_2_BG },
++		{ V4L2_COLORSPACE_JPEG, MMAL_COLOR_SPACE_JPEG_JFIF },
++		/*
++		 * We don't have an encoding for SRGB as such, but VideoCore
++		 * will do the right thing if it gets "unknown".
++		 */
++		{ V4L2_COLORSPACE_SRGB, MMAL_COLOR_SPACE_UNKNOWN },
++		/* V4L2_COLORSPACE_OPRGB unavailable */
++		/* V4L2_COLORSPACE_BT2020 unavailable */
++		/* V4L2_COLORSPACE_RAW unavailable */
++		/* V4L2_COLORSPACE_DCI_P3 unavailable */
++	};
++
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(translations); i++) {
++		if (color_space == translations[i].v4l2_value)
++			return translations[i].mmal_value;
++	}
++
++	return MMAL_COLOR_SPACE_UNKNOWN;
++}
++
+ static void setup_mmal_port_format(struct bcm2835_isp_node *node,
+ 				   struct vchiq_mmal_port *port)
+ {
+@@ -324,6 +362,7 @@ static void setup_mmal_port_format(struc
+ 	port->es.video.crop.height = q_data->height;
+ 	port->es.video.crop.x = 0;
+ 	port->es.video.crop.y = 0;
++	port->es.video.color_space = translate_color_space(q_data->colorspace);
+ };
+ 
+ static int setup_mmal_port(struct bcm2835_isp_node *node)
+@@ -827,6 +866,9 @@ static int populate_qdata_fmt(struct v4l
+ 		/* All parameters should have been set correctly by try_fmt */
+ 		q_data->bytesperline = f->fmt.pix.bytesperline;
+ 		q_data->sizeimage = f->fmt.pix.sizeimage;
++
++		/* We must indicate which of the allowed colour spaces we have. */
++		q_data->colorspace = f->fmt.pix.colorspace;
+ 	} else {
+ 		v4l2_dbg(1, debug, &dev->v4l2_dev,
+ 			 "%s: Setting meta format for fmt: %08x, size %u\n",
+@@ -838,6 +880,9 @@ static int populate_qdata_fmt(struct v4l
+ 		q_data->height = 0;
+ 		q_data->bytesperline = 0;
+ 		q_data->sizeimage = f->fmt.meta.buffersize;
++
++		/* This won't mean anything for metadata, but may as well fill it in. */
++		q_data->colorspace = V4L2_COLORSPACE_DEFAULT;
+ 	}
+ 
+ 	v4l2_dbg(1, debug, &dev->v4l2_dev,
+@@ -901,7 +946,7 @@ static int bcm2835_isp_node_g_fmt(struct
+ 		f->fmt.pix.pixelformat = q_data->fmt->fourcc;
+ 		f->fmt.pix.bytesperline = q_data->bytesperline;
+ 		f->fmt.pix.sizeimage = q_data->sizeimage;
+-		f->fmt.pix.colorspace = q_data->fmt->colorspace;
++		f->fmt.pix.colorspace = q_data->colorspace;
+ 	}
+ 
+ 	return 0;
+@@ -968,13 +1013,29 @@ static int bcm2835_isp_node_try_fmt(stru
+ 		fmt = get_default_format(node);
+ 
+ 	if (!node_is_stats(node)) {
++		int is_rgb;
++
+ 		f->fmt.pix.width = max(min(f->fmt.pix.width, MAX_DIM),
+ 				       MIN_DIM);
+ 		f->fmt.pix.height = max(min(f->fmt.pix.height, MAX_DIM),
+ 					MIN_DIM);
+ 
+ 		f->fmt.pix.pixelformat = fmt->fourcc;
+-		f->fmt.pix.colorspace = fmt->colorspace;
++
++		/*
++		 * Fill in the actual colour space when the requested one was
++		 * not supported. This also catches the case when the "default"
++		 * colour space was requested (as that's never in the mask).
++		 */
++		if (!(V4L2_COLORSPACE_MASK(f->fmt.pix.colorspace) & fmt->colorspace_mask))
++			f->fmt.pix.colorspace = fmt->colorspace_default;
++		/* In all cases, we only support the defaults for these: */
++		f->fmt.pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(f->fmt.pix.colorspace);
++		f->fmt.pix.xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(f->fmt.pix.colorspace);
++		is_rgb = f->fmt.pix.colorspace == V4L2_COLORSPACE_SRGB;
++		f->fmt.pix.quantization = V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb, f->fmt.pix.colorspace,
++									f->fmt.pix.ycbcr_enc);
++
+ 		f->fmt.pix.bytesperline = get_bytesperline(f->fmt.pix.width,
+ 							   fmt);
+ 		f->fmt.pix.field = V4L2_FIELD_NONE;
+@@ -1299,6 +1360,7 @@ static int register_node(struct bcm2835_
+ 					       node->q_data.width,
+ 					       node->q_data.height,
+ 					       node->q_data.fmt);
++	node->q_data.colorspace = node->q_data.fmt->colorspace_default;
+ 
+ 	queue->io_modes = VB2_MMAP | VB2_DMABUF;
+ 	queue->drv_priv = node;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0343-staging-rpivid-Fix-crash-when-CMA-alloc-fails.patch b/target/linux/bcm27xx/patches-5.15/950-0343-staging-rpivid-Fix-crash-when-CMA-alloc-fails.patch
new file mode 100644
index 0000000000..afd27ffb7b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0343-staging-rpivid-Fix-crash-when-CMA-alloc-fails.patch
@@ -0,0 +1,118 @@
+From 929d12a467d630372882dbf8eed47d212f102326 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Mon, 8 Feb 2021 16:01:37 +0000
+Subject: [PATCH] staging: rpivid: Fix crash when CMA alloc fails
+
+If realloc to increase coeff size fails then attempt to re-allocate
+the original size.  If that also fails then flag a fatal error to abort
+all further decode.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.h      |  3 ++
+ drivers/staging/media/rpivid/rpivid_h265.c | 44 +++++++++++++++++++++-
+ 2 files changed, 45 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -88,6 +88,9 @@ struct rpivid_ctx {
+ 	struct v4l2_pix_format		src_fmt;
+ 	struct v4l2_pix_format		dst_fmt;
+ 	int dst_fmt_set;
++	// fatal_err is set if an error has occurred s.t. decode cannot
++	// continue (such as running out of CMA)
++	int fatal_err;
+ 
+ 	struct v4l2_ctrl_handler	hdl;
+ 	struct v4l2_ctrl		**ctrls;
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -73,10 +73,18 @@ static void gptr_free(struct rpivid_dev
+ 	gptr->attrs = 0;
+ }
+ 
+-/* Realloc but do not copy */
++/* Realloc but do not copy
++ *
++ * Frees then allocs.
++ * If the alloc fails then it attempts to re-allocote the old size
++ * On error then check gptr->ptr to determine if anything is currently
++ * allocated.
++ */
+ static int gptr_realloc_new(struct rpivid_dev * const dev,
+ 			    struct rpivid_gptr * const gptr, size_t size)
+ {
++	const size_t old_size = gptr->size;
++
+ 	if (size == gptr->size)
+ 		return 0;
+ 
+@@ -88,7 +96,21 @@ static int gptr_realloc_new(struct rpivi
+ 	gptr->size = size;
+ 	gptr->ptr = dma_alloc_attrs(dev->dev, gptr->size,
+ 				    &gptr->addr, GFP_KERNEL, gptr->attrs);
+-	return gptr->ptr ? 0 : -ENOMEM;
++
++	if (!gptr->ptr) {
++		gptr->addr = 0;
++		gptr->size = old_size;
++		gptr->ptr = dma_alloc_attrs(dev->dev, gptr->size,
++					    &gptr->addr, GFP_KERNEL, gptr->attrs);
++		if (!gptr->ptr) {
++			gptr->size = 0;
++			gptr->addr = 0;
++			gptr->attrs = 0;
++		}
++		return -ENOMEM;
++	}
++
++	return 0;
+ }
+ 
+ /* floor(log2(x)) */
+@@ -2020,6 +2042,12 @@ static void phase1_thread(struct rpivid_
+ 	return;
+ 
+ fail:
++	if (!pu_gptr->addr || !coeff_gptr->addr) {
++		v4l2_err(&dev->v4l2_dev,
++			 "%s: Fatal: failed to reclaim old alloc\n",
++			 __func__);
++		ctx->fatal_err = 1;
++	}
+ 	dec_env_delete(de);
+ 	xtrace_fin(dev, de);
+ 	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+@@ -2093,6 +2121,9 @@ static void phase1_claimed(struct rpivid
+ 
+ 	xtrace_in(dev, de);
+ 
++	if (ctx->fatal_err)
++		goto fail;
++
+ 	de->pu_base_vc = pu_gptr->addr;
+ 	de->pu_stride =
+ 		ALIGN_DOWN(pu_gptr->size / de->pic_height_in_ctbs_y, 64);
+@@ -2116,6 +2147,14 @@ static void phase1_claimed(struct rpivid
+ 	apb_write_vc_addr_final(dev, RPI_CFBASE, de->cmd_copy_gptr->addr);
+ 
+ 	xtrace_ok(dev, de);
++	return;
++
++fail:
++	dec_env_delete(de);
++	xtrace_fin(dev, de);
++	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++					 VB2_BUF_STATE_ERROR);
++	xtrace_fail(dev, de);
+ }
+ 
+ static void dec_state_delete(struct rpivid_ctx *const ctx)
+@@ -2186,6 +2225,7 @@ static int rpivid_h265_start(struct rpiv
+ 	v4l2_info(&dev->v4l2_dev, "%s: (%dx%d)\n", __func__,
+ 		  ctx->dst_fmt.width, ctx->dst_fmt.height);
+ 
++	ctx->fatal_err = 0;
+ 	ctx->dec0 = NULL;
+ 	ctx->state = kzalloc(sizeof(*ctx->state), GFP_KERNEL);
+ 	if (!ctx->state) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0344-media-i2c-imx477-Remove-auto-frame-length-adjusting.patch b/target/linux/bcm27xx/patches-5.15/950-0344-media-i2c-imx477-Remove-auto-frame-length-adjusting.patch
new file mode 100644
index 0000000000..41273687d3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0344-media-i2c-imx477-Remove-auto-frame-length-adjusting.patch
@@ -0,0 +1,142 @@
+From e783c62652ae18705f1a9cfeaa5c830c76e7facc Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 10 Feb 2021 10:18:53 +0000
+Subject: [PATCH] media: i2c: imx477: Remove auto frame length
+ adjusting
+
+The V4L2_CID_EXPOSURE_AUTO_PRIORITY was used to let the sensor control
+frame length (effectively framerate) based on the requested exposure
+time requested. Remove this feature as it is never used, and goes
+against how V4L2 likes to handle exposure and vblank controls.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 83 +++-----------------------------------
+ 1 file changed, 6 insertions(+), 77 deletions(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1082,8 +1082,6 @@ struct imx477 {
+ 	struct v4l2_ctrl *hflip;
+ 	struct v4l2_ctrl *vblank;
+ 	struct v4l2_ctrl *hblank;
+-	/* This ctrl allows automatic variable framerate */
+-	struct v4l2_ctrl *exposure_auto;
+ 
+ 	/* Current mode */
+ 	const struct imx477_mode *mode;
+@@ -1280,66 +1278,14 @@ static int imx477_open(struct v4l2_subde
+ 	return 0;
+ }
+ 
+-static int imx477_set_exposure(struct imx477 *imx477, unsigned int val)
+-{
+-	int ret;
+-
+-	ret = imx477_write_reg(imx477, IMX477_REG_EXPOSURE,
+-			       IMX477_REG_VALUE_16BIT, val);
+-
+-	/* Setup the frame length in the case of auto framerate mode. */
+-	if (imx477->exposure_auto->val) {
+-		unsigned int frame_length, frame_length_max, frame_length_min;
+-
+-		frame_length_min = imx477->vblank->minimum +
+-				   imx477->mode->height;
+-		frame_length_max = imx477->vblank->maximum +
+-				   imx477->mode->height;
+-		frame_length = max(frame_length_min,
+-				   val + IMX477_EXPOSURE_OFFSET);
+-		frame_length = min(frame_length_max, frame_length);
+-		ret += imx477_write_reg(imx477, IMX477_REG_FRAME_LENGTH,
+-					IMX477_REG_VALUE_16BIT, frame_length);
+-	}
+-
+-	return ret;
+-}
+-
+ static void imx477_adjust_exposure_range(struct imx477 *imx477,
+ 					 struct v4l2_ctrl *ctrl)
+ {
+ 	int exposure_max, exposure_def;
+ 
+-	if (ctrl->id == V4L2_CID_VBLANK || !ctrl->val) {
+-		/*
+-		 * Either VBLANK has been changed or auto framerate
+-		 * adjusting has been disabled. Honour the VBLANK limits
+-		 * when setting exposure.
+-		 */
+-		exposure_max = imx477->mode->height + imx477->vblank->val -
+-						      IMX477_EXPOSURE_OFFSET;
+-
+-		if (ctrl->id == V4L2_CID_EXPOSURE_AUTO_PRIORITY) {
+-			/*
+-			 * Allow VBLANK adjustments since the driver is not
+-			 * handling frame length control automatically.
+-			 */
+-			__v4l2_ctrl_grab(imx477->vblank, false);
+-		}
+-	} else {
+-		/*
+-		 * Auto framerate adjusting has been enabled. VBLANK
+-		 * ctrl has been disabled and exposure can ramp up
+-		 * to the maximum allowable value.
+-		 */
+-		exposure_max = IMX477_EXPOSURE_MAX;
+-		/*
+-		 * Do not allow VBLANK adjustments if the driver is
+-		 * handling it frame length control automatically.
+-		 */
+-		__v4l2_ctrl_grab(imx477->vblank, true);
+-	}
+-
++	/* Honour the VBLANK limits when setting exposure. */
++	exposure_max = imx477->mode->height + imx477->vblank->val -
++						IMX477_EXPOSURE_OFFSET;
+ 	exposure_def = min(exposure_max, imx477->exposure->val);
+ 	__v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
+ 				 exposure_max, imx477->exposure->step,
+@@ -1353,14 +1299,8 @@ static int imx477_set_ctrl(struct v4l2_c
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+ 	int ret = 0;
+ 
+-	if (ctrl->id == V4L2_CID_VBLANK ||
+-	    ctrl->id == V4L2_CID_EXPOSURE_AUTO_PRIORITY) {
+-		/*
+-		 * These controls may change the limits of usable exposure,
+-		 * so check and adjust if necessary.
+-		 */
++	if (ctrl->id == V4L2_CID_VBLANK)
+ 		imx477_adjust_exposure_range(imx477, ctrl);
+-	}
+ 
+ 	/*
+ 	 * Applying V4L2 control value only happens
+@@ -1375,14 +1315,8 @@ static int imx477_set_ctrl(struct v4l2_c
+ 				       IMX477_REG_VALUE_16BIT, ctrl->val);
+ 		break;
+ 	case V4L2_CID_EXPOSURE:
+-		ret = imx477_set_exposure(imx477, ctrl->val);
+-		break;
+-	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
+-		/*
+-		 * imx477_set_exposure() will recalculate the frame length
+-		 * to adjust the framerate to match the exposure.
+-		 */
+-		ret = imx477_set_exposure(imx477, imx477->exposure->val);
++		ret = imx477_write_reg(imx477, IMX477_REG_EXPOSURE,
++				       IMX477_REG_VALUE_16BIT, ctrl->val);
+ 		break;
+ 	case V4L2_CID_DIGITAL_GAIN:
+ 		ret = imx477_write_reg(imx477, IMX477_REG_DIGITAL_GAIN,
+@@ -2005,11 +1939,6 @@ static int imx477_init_controls(struct i
+ 			  IMX477_DGTL_GAIN_MIN, IMX477_DGTL_GAIN_MAX,
+ 			  IMX477_DGTL_GAIN_STEP, IMX477_DGTL_GAIN_DEFAULT);
+ 
+-	imx477->exposure_auto =
+-			v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+-					  V4L2_CID_EXPOSURE_AUTO_PRIORITY,
+-					  0, 1, 1, 0);
+-
+ 	imx477->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+ 					  V4L2_CID_HFLIP, 0, 1, 1, 0);
+ 	if (imx477->hflip)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0345-media-i2c-imx477-Add-very-long-exposure-control-to-t.patch b/target/linux/bcm27xx/patches-5.15/950-0345-media-i2c-imx477-Add-very-long-exposure-control-to-t.patch
new file mode 100644
index 0000000000..01c90b8805
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0345-media-i2c-imx477-Add-very-long-exposure-control-to-t.patch
@@ -0,0 +1,126 @@
+From 0633c60ff1ed5897d8996c5683ea07a5d345e660 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 10 Feb 2021 10:50:32 +0000
+Subject: [PATCH] media: i2c: imx477: Add very long exposure control to
+ the driver
+
+Add support for very long exposures by using the exposure multiplier
+register. Userland does not need to pass any additional controls to
+enable long exposures, it simply requests a larger vblank to extend the
+exposure control range appropriately.
+
+Currently, since hblank is fixed, a maximum of approximately 124 seconds
+of exposure time can be used. In a future change, hblank could also be
+controlled in userland to give over 200 seconds of exposure time.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 47 +++++++++++++++++++++++++++++++++-----
+ 1 file changed, 41 insertions(+), 6 deletions(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -44,6 +44,10 @@
+ #define IMX477_REG_FRAME_LENGTH		0x0340
+ #define IMX477_FRAME_LENGTH_MAX		0xffdc
+ 
++/* Long exposure multiplier */
++#define IMX477_LONG_EXP_SHIFT_MAX	7
++#define IMX477_LONG_EXP_SHIFT_REG	0x3100
++
+ /* Exposure control */
+ #define IMX477_REG_EXPOSURE		0x0202
+ #define IMX477_EXPOSURE_OFFSET		22
+@@ -1097,6 +1101,9 @@ struct imx477 {
+ 
+ 	/* Rewrite common registers on stream on? */
+ 	bool common_regs_written;
++
++	/* Current long exposure factor in use. Set through V4L2_CID_VBLANK */
++	unsigned int long_exp_shift;
+ };
+ 
+ static inline struct imx477 *to_imx477(struct v4l2_subdev *_sd)
+@@ -1285,13 +1292,33 @@ static void imx477_adjust_exposure_range
+ 
+ 	/* Honour the VBLANK limits when setting exposure. */
+ 	exposure_max = imx477->mode->height + imx477->vblank->val -
+-						IMX477_EXPOSURE_OFFSET;
++		       (IMX477_EXPOSURE_OFFSET << imx477->long_exp_shift);
+ 	exposure_def = min(exposure_max, imx477->exposure->val);
+ 	__v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
+ 				 exposure_max, imx477->exposure->step,
+ 				 exposure_def);
+ }
+ 
++static int imx477_set_frame_length(struct imx477 *imx477, unsigned int val)
++{
++	int ret = 0;
++
++	imx477->long_exp_shift = 0;
++
++	while (val > IMX477_FRAME_LENGTH_MAX) {
++		imx477->long_exp_shift++;
++		val >>= 1;
++	}
++
++	ret = imx477_write_reg(imx477, IMX477_REG_FRAME_LENGTH,
++			       IMX477_REG_VALUE_16BIT, val);
++	if (ret)
++		return ret;
++
++	return imx477_write_reg(imx477, IMX477_LONG_EXP_SHIFT_REG,
++				IMX477_REG_VALUE_08BIT, imx477->long_exp_shift);
++}
++
+ static int imx477_set_ctrl(struct v4l2_ctrl *ctrl)
+ {
+ 	struct imx477 *imx477 =
+@@ -1299,6 +1326,10 @@ static int imx477_set_ctrl(struct v4l2_c
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+ 	int ret = 0;
+ 
++	/*
++	 * The VBLANK control may change the limits of usable exposure, so check
++	 * and adjust if necessary.
++	 */
+ 	if (ctrl->id == V4L2_CID_VBLANK)
+ 		imx477_adjust_exposure_range(imx477, ctrl);
+ 
+@@ -1316,7 +1347,8 @@ static int imx477_set_ctrl(struct v4l2_c
+ 		break;
+ 	case V4L2_CID_EXPOSURE:
+ 		ret = imx477_write_reg(imx477, IMX477_REG_EXPOSURE,
+-				       IMX477_REG_VALUE_16BIT, ctrl->val);
++				       IMX477_REG_VALUE_16BIT, ctrl->val >>
++							imx477->long_exp_shift);
+ 		break;
+ 	case V4L2_CID_DIGITAL_GAIN:
+ 		ret = imx477_write_reg(imx477, IMX477_REG_DIGITAL_GAIN,
+@@ -1350,9 +1382,8 @@ static int imx477_set_ctrl(struct v4l2_c
+ 				       imx477->vflip->val << 1);
+ 		break;
+ 	case V4L2_CID_VBLANK:
+-		ret = imx477_write_reg(imx477, IMX477_REG_FRAME_LENGTH,
+-				       IMX477_REG_VALUE_16BIT,
+-				       imx477->mode->height + ctrl->val);
++		ret = imx477_set_frame_length(imx477,
++					      imx477->mode->height + ctrl->val);
+ 		break;
+ 	default:
+ 		dev_info(&client->dev,
+@@ -1521,9 +1552,13 @@ static void imx477_set_framing_limits(st
+ 	frm_length_default =
+ 		     imx477_get_frame_length(mode, &mode->timeperframe_default);
+ 
++	/* Default to no long exposure multiplier. */
++	imx477->long_exp_shift = 0;
++
+ 	/* Update limits and set FPS to default */
+ 	__v4l2_ctrl_modify_range(imx477->vblank, frm_length_min - mode->height,
+-				 IMX477_FRAME_LENGTH_MAX - mode->height,
++				 ((1 << IMX477_LONG_EXP_SHIFT_MAX) *
++					IMX477_FRAME_LENGTH_MAX) - mode->height,
+ 				 1, frm_length_default - mode->height);
+ 
+ 	/* Setting this will adjust the exposure limits as well. */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0346-media-i2c-imx290-Fix-up-exposure-calcuations-and-ran.patch b/target/linux/bcm27xx/patches-5.15/950-0346-media-i2c-imx290-Fix-up-exposure-calcuations-and-ran.patch
new file mode 100644
index 0000000000..e61ce8971c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0346-media-i2c-imx290-Fix-up-exposure-calcuations-and-ran.patch
@@ -0,0 +1,59 @@
+From b6117da06f6d72d847985e5f179db62beb0227ca Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Wed, 17 Feb 2021 18:08:12 +0000
+Subject: [PATCH] media: i2c: imx290: Fix up exposure calcuations and
+ ranges
+
+Should now correspond exactly to the datasheet.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 14 +++++++-------
+ 1 file changed, 7 insertions(+), 7 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -50,7 +50,7 @@ enum imx290_clk_index {
+ #define IMX290_HMAX_MIN_4LANE 2200 /* Min of 2200 pixels = 60fps */
+ #define IMX290_HMAX_MAX 0xffff
+ 
+-#define IMX290_EXPOSURE_MIN 2
++#define IMX290_EXPOSURE_MIN 1
+ #define IMX290_EXPOSURE_STEP 1
+ #define IMX290_EXPOSURE_LOW 0x3020
+ #define IMX290_PGCTRL 0x308c
+@@ -584,7 +584,7 @@ static int imx290_set_gain(struct imx290
+ static int imx290_set_exposure(struct imx290 *imx290, u32 value)
+ {
+ 	u32 exposure = (imx290->current_mode->height + imx290->vblank->val) -
+-						value;
++						value - 1;
+ 	int ret;
+ 
+ 	ret = imx290_write_buffered_reg(imx290, IMX290_EXPOSURE_LOW, 3,
+@@ -855,10 +855,10 @@ static int imx290_set_fmt(struct v4l2_su
+ 		}
+ 		if (imx290->exposure)
+ 			__v4l2_ctrl_modify_range(imx290->exposure,
+-						 mode->vmax - mode->height,
+-						 mode->vmax - 4,
++						 IMX290_EXPOSURE_MIN,
++						 mode->vmax - 2,
+ 						 IMX290_EXPOSURE_STEP,
+-						 mode->vmax - 4);
++						 mode->vmax - 2);
+ 	}
+ 
+ 	*format = fmt->format;
+@@ -1345,9 +1345,9 @@ static int imx290_probe(struct i2c_clien
+ 	imx290->exposure = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+ 					     V4L2_CID_EXPOSURE,
+ 					     IMX290_EXPOSURE_MIN,
+-					     mode->vmax - 4,
++					     mode->vmax - 2,
+ 					     IMX290_EXPOSURE_STEP,
+-					     mode->vmax - 4);
++					     mode->vmax - 2);
+ 
+ 	imx290->hflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+ 					  V4L2_CID_HFLIP, 0, 1, 1, 0);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0347-media-i2c-imx290-Handle-exposure-correctly-when-vbla.patch b/target/linux/bcm27xx/patches-5.15/950-0347-media-i2c-imx290-Handle-exposure-correctly-when-vbla.patch
new file mode 100644
index 0000000000..5511d620e1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0347-media-i2c-imx290-Handle-exposure-correctly-when-vbla.patch
@@ -0,0 +1,42 @@
+From 312748a4a15eba1d63a0861acabb7941c36e69d7 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 18 Feb 2021 11:58:29 +0000
+Subject: [PATCH] media: i2c: imx290: Handle exposure correctly when
+ vblank changes
+
+When vblank changes we must modify the exposure range. Also, with this
+sensor, the effective exposure time implicitly changes when vblank
+does, so we have to reset it after every vblank update.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 18 ++++++++++++++++++
+ 1 file changed, 18 insertions(+)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -618,6 +618,24 @@ static int imx290_set_vmax(struct imx290
+ 	if (ret)
+ 		dev_err(imx290->dev, "Unable to write vmax\n");
+ 
++	/*
++	 * Changing vblank changes the allowed range for exposure.
++	 * We don't supply the current exposure as default here as it
++	 * may lie outside the new range. We will reset it just below.
++	 */
++	__v4l2_ctrl_modify_range(imx290->exposure,
++				 IMX290_EXPOSURE_MIN,
++				 vmax - 2,
++				 IMX290_EXPOSURE_STEP,
++				 vmax - 2);
++
++	/*
++	 * Becuse of the way exposure works for this sensor, updating
++	 * vblank causes the effective exposure to change, so we must
++	 * set it back to the "new" correct value.
++	 */
++	imx290_set_exposure(imx290, imx290->exposure->val);
++
+ 	return ret;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0348-media-i2c-imx477-Fix-crop-height-for-2028x1080-mode.patch b/target/linux/bcm27xx/patches-5.15/950-0348-media-i2c-imx477-Fix-crop-height-for-2028x1080-mode.patch
new file mode 100644
index 0000000000..660467bc6c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0348-media-i2c-imx477-Fix-crop-height-for-2028x1080-mode.patch
@@ -0,0 +1,25 @@
+From ccee8f195e3a5b82e3fbfabc7e04f3db7d5f4449 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 18 Feb 2021 15:05:57 +0000
+Subject: [PATCH] media: i2c: imx477: Fix crop height for 2028x1080
+ mode
+
+The crop height for this mode was set at 2600 lines, it should be 2160
+lines instead.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -955,7 +955,7 @@ static const struct imx477_mode supporte
+ 			.left = IMX477_PIXEL_ARRAY_LEFT,
+ 			.top = IMX477_PIXEL_ARRAY_TOP + 440,
+ 			.width = 4056,
+-			.height = 2600,
++			.height = 2160,
+ 		},
+ 		.timeperframe_min = {
+ 			.numerator = 100,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0349-media-i2c-imx477-Replace-existing-1012x760-mode.patch b/target/linux/bcm27xx/patches-5.15/950-0349-media-i2c-imx477-Replace-existing-1012x760-mode.patch
new file mode 100644
index 0000000000..b06e451f4d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0349-media-i2c-imx477-Replace-existing-1012x760-mode.patch
@@ -0,0 +1,197 @@
+From 43568d1ac29fbbdc812a52a82f6ec1cd5ff6d6e6 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 18 Feb 2021 15:23:11 +0000
+Subject: [PATCH] media: i2c: imx477: Replace existing 1012x760 mode
+
+The existing 1012x760 120 fps mode has significant IQ problem using
+the internal sensor scaler. Replace this mode with a 1332x990 120 fps
+mode instead. This new mode has a smaller field of view, but does not
+suffer from the bad IQ of the original mode.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 97 ++++++++++++++++++++------------------
+ 1 file changed, 50 insertions(+), 47 deletions(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -770,7 +770,7 @@ static const struct imx477_reg mode_2028
+ };
+ 
+ /* 4x4 binned. 120fps */
+-static const struct imx477_reg mode_1012x760_regs[] = {
++static const struct imx477_reg mode_1332x990_regs[] = {
+ 	{0x420b, 0x01},
+ 	{0x990c, 0x00},
+ 	{0x990d, 0x08},
+@@ -786,28 +786,31 @@ static const struct imx477_reg mode_1012
+ 	{0x0112, 0x0a},
+ 	{0x0113, 0x0a},
+ 	{0x0114, 0x01},
+-	{0x0342, 0x14},
+-	{0x0343, 0x60},
++	{0x0342, 0x1a},
++	{0x0343, 0x08},
++	{0x0340, 0x04},
++	{0x0341, 0x1a},
+ 	{0x0344, 0x00},
+ 	{0x0345, 0x00},
+-	{0x0346, 0x00},
+-	{0x0347, 0x00},
++	{0x0346, 0x02},
++	{0x0347, 0x10},
+ 	{0x0348, 0x0f},
+-	{0x0349, 0xd3},
+-	{0x034a, 0x0b},
+-	{0x034b, 0xdf},
++	{0x0349, 0xd7},
++	{0x034a, 0x09},
++	{0x034b, 0xcf},
+ 	{0x00e3, 0x00},
+ 	{0x00e4, 0x00},
+ 	{0x00fc, 0x0a},
+ 	{0x00fd, 0x0a},
+ 	{0x00fe, 0x0a},
+ 	{0x00ff, 0x0a},
++	{0xe013, 0x00},
+ 	{0x0220, 0x00},
+ 	{0x0221, 0x11},
+ 	{0x0381, 0x01},
+ 	{0x0383, 0x01},
+ 	{0x0385, 0x01},
+-	{0x0387, 0x03},
++	{0x0387, 0x01},
+ 	{0x0900, 0x01},
+ 	{0x0901, 0x22},
+ 	{0x0902, 0x02},
+@@ -831,29 +834,29 @@ static const struct imx477_reg mode_1012
+ 	{0x936d, 0x5f},
+ 	{0x9304, 0x03},
+ 	{0x9305, 0x80},
+-	{0x9e9a, 0x3f},
+-	{0x9e9b, 0x3f},
+-	{0x9e9c, 0x3f},
+-	{0x9e9d, 0x27},
+-	{0x9e9e, 0x27},
+-	{0x9e9f, 0x27},
++	{0x9e9a, 0x2f},
++	{0x9e9b, 0x2f},
++	{0x9e9c, 0x2f},
++	{0x9e9d, 0x00},
++	{0x9e9e, 0x00},
++	{0x9e9f, 0x00},
+ 	{0xa2a9, 0x27},
+ 	{0xa2b7, 0x03},
+-	{0x0401, 0x01},
++	{0x0401, 0x00},
+ 	{0x0404, 0x00},
+-	{0x0405, 0x20},
+-	{0x0408, 0x00},
+-	{0x0409, 0x00},
++	{0x0405, 0x10},
++	{0x0408, 0x01},
++	{0x0409, 0x5c},
+ 	{0x040a, 0x00},
+ 	{0x040b, 0x00},
+-	{0x040c, 0x07},
+-	{0x040d, 0xea},
+-	{0x040e, 0x02},
+-	{0x040f, 0xf8},
+-	{0x034c, 0x03},
+-	{0x034d, 0xf4},
+-	{0x034e, 0x02},
+-	{0x034f, 0xf8},
++	{0x040c, 0x05},
++	{0x040d, 0x34},
++	{0x040e, 0x03},
++	{0x040f, 0xde},
++	{0x034c, 0x05},
++	{0x034d, 0x34},
++	{0x034e, 0x03},
++	{0x034f, 0xde},
+ 	{0x0301, 0x05},
+ 	{0x0303, 0x02},
+ 	{0x0305, 0x02},
+@@ -870,21 +873,21 @@ static const struct imx477_reg mode_1012
+ 	{0x0822, 0x00},
+ 	{0x0823, 0x00},
+ 	{0x080a, 0x00},
+-	{0x080b, 0x6f},
++	{0x080b, 0x7f},
+ 	{0x080c, 0x00},
+-	{0x080d, 0x3f},
++	{0x080d, 0x4f},
+ 	{0x080e, 0x00},
+-	{0x080f, 0xff},
++	{0x080f, 0x77},
+ 	{0x0810, 0x00},
+-	{0x0811, 0x4f},
++	{0x0811, 0x5f},
+ 	{0x0812, 0x00},
+-	{0x0813, 0x47},
++	{0x0813, 0x57},
+ 	{0x0814, 0x00},
+-	{0x0815, 0x37},
+-	{0x0816, 0x00},
+-	{0x0817, 0xe7},
++	{0x0815, 0x4f},
++	{0x0816, 0x01},
++	{0x0817, 0x27},
+ 	{0x0818, 0x00},
+-	{0x0819, 0x2f},
++	{0x0819, 0x3f},
+ 	{0xe04c, 0x00},
+ 	{0xe04d, 0x5f},
+ 	{0xe04e, 0x00},
+@@ -893,7 +896,7 @@ static const struct imx477_reg mode_1012
+ 	{0x3e37, 0x00},
+ 	{0x3f50, 0x00},
+ 	{0x3f56, 0x00},
+-	{0x3f57, 0x96},
++	{0x3f57, 0xbf},
+ };
+ 
+ /* Mode configs */
+@@ -974,9 +977,9 @@ static const struct imx477_mode supporte
+ 
+ static const struct imx477_mode supported_modes_10bit[] = {
+ 	{
+-		/* 720P 120fps. 4x4 binned */
+-		.width = 1012,
+-		.height = 760,
++		/* 120fps. 2x2 binned and cropped */
++		.width = 1332,
++		.height = 990,
+ 		.line_length_pix = 0x1460,
+ 		.crop = {
+ 			/*
+@@ -987,10 +990,10 @@ static const struct imx477_mode supporte
+ 			 * rectangle once the driver is expanded to represent
+ 			 * its processing blocks with multiple subdevs.
+ 			 */
+-			.left = IMX477_PIXEL_ARRAY_LEFT + 4,
+-			.top = IMX477_PIXEL_ARRAY_TOP,
+-			.width = 4052,
+-			.height = 3040,
++			.left = IMX477_PIXEL_ARRAY_LEFT + 696,
++			.top = IMX477_PIXEL_ARRAY_TOP + 528,
++			.width = 2664,
++			.height = 1980,
+ 		},
+ 		.timeperframe_min = {
+ 			.numerator = 100,
+@@ -998,11 +1001,11 @@ static const struct imx477_mode supporte
+ 		},
+ 		.timeperframe_default = {
+ 			.numerator = 100,
+-			.denominator = 60000
++			.denominator = 12000
+ 		},
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mode_1012x760_regs),
+-			.regs = mode_1012x760_regs,
++			.num_of_regs = ARRAY_SIZE(mode_1332x990_regs),
++			.regs = mode_1332x990_regs,
+ 		}
+ 	}
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0350-media-i2c-imx477-Remove-internal-v4l2_mbus_framefmt-.patch b/target/linux/bcm27xx/patches-5.15/950-0350-media-i2c-imx477-Remove-internal-v4l2_mbus_framefmt-.patch
new file mode 100644
index 0000000000..bfe91581a2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0350-media-i2c-imx477-Remove-internal-v4l2_mbus_framefmt-.patch
@@ -0,0 +1,70 @@
+From 34bed428fea0d0da58a22365588f7511b491a497 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Fri, 19 Feb 2021 10:30:49 +0000
+Subject: [PATCH] media: i2c: imx477: Remove internal
+ v4l2_mbus_framefmt from the state
+
+The only field in this struct that is used is the format code, so
+replace the struct with this single field.
+
+Save the format code in imx477_set_pad_format() when setting up a new
+mode so that imx477_get_pad_format() performs the right lookup.
+Otherwise, this caused a bug where the mode lookup occurred on the
+12-bit table rather than the 10-bit table.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 19 ++++---------------
+ 1 file changed, 4 insertions(+), 15 deletions(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1073,7 +1073,7 @@ struct imx477 {
+ 	struct v4l2_subdev sd;
+ 	struct media_pad pad[NUM_PADS];
+ 
+-	struct v4l2_mbus_framefmt fmt;
++	unsigned int fmt_code;
+ 
+ 	struct clk *xclk;
+ 	u32 xclk_freq;
+@@ -1235,21 +1235,9 @@ static u32 imx477_get_format_code(struct
+ 
+ static void imx477_set_default_format(struct imx477 *imx477)
+ {
+-	struct v4l2_mbus_framefmt *fmt = &imx477->fmt;
+-
+ 	/* Set default mode to max resolution */
+ 	imx477->mode = &supported_modes_12bit[0];
+-
+-	fmt->code = MEDIA_BUS_FMT_SRGGB12_1X12;
+-	fmt->colorspace = V4L2_COLORSPACE_SRGB;
+-	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+-	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+-							  fmt->colorspace,
+-							  fmt->ycbcr_enc);
+-	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+-	fmt->width = imx477->mode->width;
+-	fmt->height = imx477->mode->height;
+-	fmt->field = V4L2_FIELD_NONE;
++	imx477->fmt_code = MEDIA_BUS_FMT_SRGGB12_1X12;
+ }
+ 
+ static int imx477_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+@@ -1520,7 +1508,7 @@ static int imx477_get_pad_format(struct
+ 			imx477_update_image_pad_format(imx477, imx477->mode,
+ 						       fmt);
+ 			fmt->format.code =
+-			       imx477_get_format_code(imx477, imx477->fmt.code);
++			       imx477_get_format_code(imx477, imx477->fmt_code);
+ 		} else {
+ 			imx477_update_metadata_pad_format(fmt);
+ 		}
+@@ -1611,6 +1599,7 @@ static int imx477_set_pad_format(struct
+ 			*framefmt = fmt->format;
+ 		} else {
+ 			imx477->mode = mode;
++			imx477->fmt_code = fmt->format.code;
+ 			imx477_set_framing_limits(imx477);
+ 		}
+ 	} else {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0351-media-i2c-imx477-Remove-unused-function-parameter.patch b/target/linux/bcm27xx/patches-5.15/950-0351-media-i2c-imx477-Remove-unused-function-parameter.patch
new file mode 100644
index 0000000000..580df482b9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0351-media-i2c-imx477-Remove-unused-function-parameter.patch
@@ -0,0 +1,34 @@
+From 6f4861904ed9838d2f896889f051dfba3e33861e Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Fri, 19 Feb 2021 11:06:40 +0000
+Subject: [PATCH] media: i2c: imx477: Remove unused function parameter
+
+The struct imx477 *ctrl parameter is not used in the function
+imx477_adjust_exposure_range(), so remove it.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1276,8 +1276,7 @@ static int imx477_open(struct v4l2_subde
+ 	return 0;
+ }
+ 
+-static void imx477_adjust_exposure_range(struct imx477 *imx477,
+-					 struct v4l2_ctrl *ctrl)
++static void imx477_adjust_exposure_range(struct imx477 *imx477)
+ {
+ 	int exposure_max, exposure_def;
+ 
+@@ -1322,7 +1321,7 @@ static int imx477_set_ctrl(struct v4l2_c
+ 	 * and adjust if necessary.
+ 	 */
+ 	if (ctrl->id == V4L2_CID_VBLANK)
+-		imx477_adjust_exposure_range(imx477, ctrl);
++		imx477_adjust_exposure_range(imx477);
+ 
+ 	/*
+ 	 * Applying V4L2 control value only happens
diff --git a/target/linux/bcm27xx/patches-5.15/950-0352-media-bcm2835-unicam-Fix-bug-in-buffer-swapping-logi.patch b/target/linux/bcm27xx/patches-5.15/950-0352-media-bcm2835-unicam-Fix-bug-in-buffer-swapping-logi.patch
new file mode 100644
index 0000000000..364600158d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0352-media-bcm2835-unicam-Fix-bug-in-buffer-swapping-logi.patch
@@ -0,0 +1,75 @@
+From e86fdc72907b8cf1aab4dfd70843ffb166de0405 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Fri, 5 Mar 2021 15:40:45 +0000
+Subject: [PATCH] media: bcm2835-unicam: Fix bug in buffer swapping
+ logic
+
+If multiple sets of interrupts occur simultaneously, it may be unsafe
+to swap buffers, as the hardware may already be re-using the current
+buffers. In such cases, avoid swapping buffers, and wait for the next
+opportunity at the Frame End interrupt to signal completion.
+
+Additionally, check the packet compare status when watching for frame
+end for buffers swaps, as this could also signify a frame end event.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 21 ++++++++++++++++---
+ 1 file changed, 18 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -798,6 +798,7 @@ static irqreturn_t unicam_isr(int irq, v
+ 	unsigned int sequence = unicam->sequence;
+ 	unsigned int i;
+ 	u32 ista, sta;
++	bool fe;
+ 	u64 ts;
+ 
+ 	sta = reg_read(unicam, UNICAM_STA);
+@@ -815,12 +816,18 @@ static irqreturn_t unicam_isr(int irq, v
+ 		return IRQ_HANDLED;
+ 
+ 	/*
++	 * Look for either the Frame End interrupt or the Packet Capture status
++	 * to signal a frame end.
++	 */
++	fe = (ista & UNICAM_FEI || sta & UNICAM_PI0);
++
++	/*
+ 	 * We must run the frame end handler first. If we have a valid next_frm
+ 	 * and we get a simultaneout FE + FS interrupt, running the FS handler
+ 	 * first would null out the next_frm ptr and we would have lost the
+ 	 * buffer forever.
+ 	 */
+-	if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
++	if (fe) {
+ 		/*
+ 		 * Ensure we have swapped buffers already as we can't
+ 		 * stop the peripheral. If no buffer is available, use a
+@@ -831,7 +838,15 @@ static irqreturn_t unicam_isr(int irq, v
+ 			if (!unicam->node[i].streaming)
+ 				continue;
+ 
+-			if (unicam->node[i].cur_frm)
++			/*
++			 * If cur_frm == next_frm, it means we have not had
++			 * a chance to swap buffers, likely due to having
++			 * multiple interrupts occurring simultaneously (like FE
++			 * + FS + LS). In this case, we cannot signal the buffer
++			 * as complete, as the HW will reuse that buffer.
++			 */
++			if (unicam->node[i].cur_frm &&
++			    unicam->node[i].cur_frm != unicam->node[i].next_frm)
+ 				unicam_process_buffer_complete(&unicam->node[i],
+ 							       sequence);
+ 			unicam->node[i].cur_frm = unicam->node[i].next_frm;
+@@ -868,7 +883,7 @@ static irqreturn_t unicam_isr(int irq, v
+ 	 * where the HW does not actually swap it if the new frame has
+ 	 * already started.
+ 	 */
+-	if (ista & (UNICAM_FSI | UNICAM_LCI) && !(ista & UNICAM_FEI)) {
++	if (ista & (UNICAM_FSI | UNICAM_LCI) && !fe) {
+ 		for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
+ 			if (!unicam->node[i].streaming)
+ 				continue;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0353-Assign-crypto-aliases-to-different-AES-implementatio.patch b/target/linux/bcm27xx/patches-5.15/950-0353-Assign-crypto-aliases-to-different-AES-implementatio.patch
new file mode 100644
index 0000000000..7af13d4023
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0353-Assign-crypto-aliases-to-different-AES-implementatio.patch
@@ -0,0 +1,105 @@
+From d4a2fa7b58d3891544c9b7e41e92f17774ad7d1f Mon Sep 17 00:00:00 2001
+From: Ben Avison <bavison@riscosopen.org>
+Date: Mon, 8 Mar 2021 15:32:25 +0000
+Subject: [PATCH] Assign crypto aliases to different AES implementation
+ modules
+
+The kernel modules aes-neon-blk and aes-neon-bs perform poorly, at least on
+Cortex-A72 without crypto extensions. In fact, aes-arm64 outperforms them
+on benchmarks, despite it being a simpler implementation (only accelerating
+the single-block AES cipher).
+
+For modes of operation where multiple cipher blocks can be processed in
+parallel, aes-neon-bs outperforms aes-neon-blk by around 60-70% and aes-arm64
+is another 10-20% faster still. But the difference is even more marked with
+modes of operation with dependencies between neighbouring blocks, such as
+CBC encryption, which defeat parallelism: in these cases, aes-arm64 is
+typically around 250% faster than either aes-neon-blk or aes-neon-bs.
+
+The key trade-off with aes-arm64 is that the look-up tables are situated in
+RAM. This leaves them potentially open to cache timing attacks. The two other
+modules, by contrast, load the look-up tables into NEON registers and so are
+able to perform in constant time.
+
+This patch aims to load aes-arm64 more often.
+
+If none of the currently-loaded crypto modules implement a given algorithm,
+a new one is typically selected for loading using a platform-neutral alias
+describing the required algorithm. To enable users to still
+load aes-neon-blk or aes-neon-bs if they really want them, while still
+ensuring that aes-arm64 is usually selected, remove the aliases from
+aes-neonbs-glue.c and aes-glue.c and apply them to aes-cipher-glue.c, but
+still build the two NEON modules.
+
+Since aes-glue.c can also be used to build aes-ce-blk, leave them enabled
+if USE_V8_CRYPTO_EXTENSIONS is defined, to ensure they are selected if we
+in future use a CPU which has the crypto extensions enabled.
+
+Note that the algorithm priority specifiers are unchanged, so if
+aes-neon-bs is loaded at the same time as aes-arm64, the former will be
+used in preference. However, aes-neon-blk and aes-arm64 have tied priority,
+so whichever module was loaded first will be used (assuming aes-neon-bs is
+not loaded).
+
+Signed-off-by: Ben Avison <bavison@riscosopen.org>
+---
+ arch/arm64/crypto/aes-cipher-glue.c | 10 ++++++++++
+ arch/arm64/crypto/aes-glue.c        |  4 ++--
+ arch/arm64/crypto/aes-neonbs-glue.c |  5 -----
+ 3 files changed, 12 insertions(+), 7 deletions(-)
+
+--- a/arch/arm64/crypto/aes-cipher-glue.c
++++ b/arch/arm64/crypto/aes-cipher-glue.c
+@@ -9,6 +9,16 @@
+ #include <linux/crypto.h>
+ #include <linux/module.h>
+ 
++MODULE_ALIAS_CRYPTO("ecb(aes)");
++MODULE_ALIAS_CRYPTO("cbc(aes)");
++MODULE_ALIAS_CRYPTO("ctr(aes)");
++MODULE_ALIAS_CRYPTO("xts(aes)");
++MODULE_ALIAS_CRYPTO("cts(cbc(aes))");
++MODULE_ALIAS_CRYPTO("essiv(cbc(aes),sha256)");
++MODULE_ALIAS_CRYPTO("cmac(aes)");
++MODULE_ALIAS_CRYPTO("xcbc(aes)");
++MODULE_ALIAS_CRYPTO("cbcmac(aes)");
++
+ asmlinkage void __aes_arm64_encrypt(u32 *rk, u8 *out, const u8 *in, int rounds);
+ asmlinkage void __aes_arm64_decrypt(u32 *rk, u8 *out, const u8 *in, int rounds);
+ 
+--- a/arch/arm64/crypto/aes-glue.c
++++ b/arch/arm64/crypto/aes-glue.c
+@@ -57,17 +57,17 @@ MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS
+ #define aes_mac_update		neon_aes_mac_update
+ MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 NEON");
+ #endif
+-#if defined(USE_V8_CRYPTO_EXTENSIONS) || !IS_ENABLED(CONFIG_CRYPTO_AES_ARM64_BS)
++#if defined(USE_V8_CRYPTO_EXTENSIONS)
+ MODULE_ALIAS_CRYPTO("ecb(aes)");
+ MODULE_ALIAS_CRYPTO("cbc(aes)");
+ MODULE_ALIAS_CRYPTO("ctr(aes)");
+ MODULE_ALIAS_CRYPTO("xts(aes)");
+-#endif
+ MODULE_ALIAS_CRYPTO("cts(cbc(aes))");
+ MODULE_ALIAS_CRYPTO("essiv(cbc(aes),sha256)");
+ MODULE_ALIAS_CRYPTO("cmac(aes)");
+ MODULE_ALIAS_CRYPTO("xcbc(aes)");
+ MODULE_ALIAS_CRYPTO("cbcmac(aes)");
++#endif
+ 
+ MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
+ MODULE_LICENSE("GPL v2");
+--- a/arch/arm64/crypto/aes-neonbs-glue.c
++++ b/arch/arm64/crypto/aes-neonbs-glue.c
+@@ -18,11 +18,6 @@
+ MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
+ MODULE_LICENSE("GPL v2");
+ 
+-MODULE_ALIAS_CRYPTO("ecb(aes)");
+-MODULE_ALIAS_CRYPTO("cbc(aes)");
+-MODULE_ALIAS_CRYPTO("ctr(aes)");
+-MODULE_ALIAS_CRYPTO("xts(aes)");
+-
+ asmlinkage void aesbs_convert_key(u8 out[], u32 const rk[], int rounds);
+ 
+ asmlinkage void aesbs_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[],
diff --git a/target/linux/bcm27xx/patches-5.15/950-0354-media-v4l2_m2m-In-buffered-mode-run-jobs-if-either-p.patch b/target/linux/bcm27xx/patches-5.15/950-0354-media-v4l2_m2m-In-buffered-mode-run-jobs-if-either-p.patch
new file mode 100644
index 0000000000..8f6ebb5011
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0354-media-v4l2_m2m-In-buffered-mode-run-jobs-if-either-p.patch
@@ -0,0 +1,33 @@
+From 2f4734a76cc4b4970b18e402bf7aaad7820e5f7b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 1 Feb 2021 18:48:47 +0000
+Subject: [PATCH] media/v4l2_m2m: In buffered mode run jobs if either
+ port is streaming
+
+In order to get the intended behaviour of the stateful video
+decoder API where only the OUTPUT queue needs to be enabled and fed
+buffers in order to get the SOURCE_CHANGED event that configures the
+CAPTURE queue, we want the device to run should either queue be
+streaming.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/v4l2-core/v4l2-mem2mem.c | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
++++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
+@@ -301,9 +301,10 @@ static void __v4l2_m2m_try_queue(struct
+ 
+ 	dprintk("Trying to schedule a job for m2m_ctx: %p\n", m2m_ctx);
+ 
+-	if (!m2m_ctx->out_q_ctx.q.streaming
+-	    || !m2m_ctx->cap_q_ctx.q.streaming) {
+-		dprintk("Streaming needs to be on for both queues\n");
++	if (!(m2m_ctx->out_q_ctx.q.streaming &&
++	      m2m_ctx->cap_q_ctx.q.streaming) &&
++	    !(m2m_ctx->out_q_ctx.buffered && m2m_ctx->out_q_ctx.q.streaming)) {
++		dprintk("Streaming needs to be on for both queues, or buffered and OUTPUT streaming\n");
+ 		return;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0355-staging-bcm2835-codec-Correct-logging-of-size_t-to-z.patch b/target/linux/bcm27xx/patches-5.15/950-0355-staging-bcm2835-codec-Correct-logging-of-size_t-to-z.patch
new file mode 100644
index 0000000000..7313cd29bf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0355-staging-bcm2835-codec-Correct-logging-of-size_t-to-z.patch
@@ -0,0 +1,34 @@
+From 2a316a52b69d136933a5b22f6f7f93a6f057db7f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 1 Feb 2021 18:55:37 +0000
+Subject: [PATCH] staging/bcm2835-codec: Correct logging of size_t to
+ %zu
+
+Fixes: "staging/bcm2835-codec: Log the number of excess supported formats"
+Which used %u for printing a size_t, and 64bit builds then log a warning.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c  | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -2837,7 +2837,7 @@ static int bcm2835_codec_get_supported_f
+ 	if (ret) {
+ 		if (ret == MMAL_MSG_STATUS_ENOSPC) {
+ 			v4l2_err(&dev->v4l2_dev,
+-				 "%s: port has more encodings than we provided space for. Some are dropped (%u vs %u).\n",
++				 "%s: port has more encodings than we provided space for. Some are dropped (%zu vs %u).\n",
+ 				 __func__, param_size / sizeof(u32),
+ 				 MAX_SUPPORTED_ENCODINGS);
+ 			num_encodings = MAX_SUPPORTED_ENCODINGS;
+@@ -2883,7 +2883,7 @@ static int bcm2835_codec_get_supported_f
+ 	if (ret) {
+ 		if (ret == MMAL_MSG_STATUS_ENOSPC) {
+ 			v4l2_err(&dev->v4l2_dev,
+-				 "%s: port has more encodings than we provided space for. Some are dropped (%u vs %u).\n",
++				 "%s: port has more encodings than we provided space for. Some are dropped (%zu vs %u).\n",
+ 				 __func__, param_size / sizeof(u32),
+ 				 MAX_SUPPORTED_ENCODINGS);
+ 			num_encodings = MAX_SUPPORTED_ENCODINGS;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0356-staging-bcm2835-codec-Add-support-for-pixel-aspect-r.patch b/target/linux/bcm27xx/patches-5.15/950-0356-staging-bcm2835-codec-Add-support-for-pixel-aspect-r.patch
new file mode 100644
index 0000000000..b431bb76f1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0356-staging-bcm2835-codec-Add-support-for-pixel-aspect-r.patch
@@ -0,0 +1,82 @@
+From 9fd39b1fe86a26b942fc0ebf2138076758547c44 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 2 Feb 2021 15:50:18 +0000
+Subject: [PATCH] staging/bcm2835-codec: Add support for pixel aspect
+ ratio
+
+If the format is detected by the driver and a V4L2_EVENT_SOURCE_CHANGE
+event is generated, then pass on the pixel aspect ratio as well.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 31 +++++++++++++++++++
+ 1 file changed, 31 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -602,6 +602,7 @@ struct bcm2835_codec_q_data {
+ 	unsigned int		crop_width;
+ 	unsigned int		crop_height;
+ 	bool			selection_set;
++	struct v4l2_fract	aspect_ratio;
+ 
+ 	unsigned int		sizeimage;
+ 	unsigned int		sequence;
+@@ -981,6 +982,9 @@ static void handle_fmt_changed(struct bc
+ 	if (format->es.video.color_space)
+ 		color_mmal2v4l(ctx, format->es.video.color_space);
+ 
++	q_data->aspect_ratio.numerator = format->es.video.par.num;
++	q_data->aspect_ratio.denominator = format->es.video.par.den;
++
+ 	queue_res_chg_event(ctx);
+ }
+ 
+@@ -1657,6 +1661,29 @@ static int vidioc_g_parm(struct file *fi
+ 	return 0;
+ }
+ 
++static int vidioc_g_pixelaspect(struct file *file, void *fh, int type,
++				struct v4l2_fract *f)
++{
++	struct bcm2835_codec_ctx *ctx = file2ctx(file);
++
++	/*
++	 * The selection API takes V4L2_BUF_TYPE_VIDEO_CAPTURE and
++	 * V4L2_BUF_TYPE_VIDEO_OUTPUT, even if the device implements the MPLANE
++	 * API. The V4L2 core will have converted the MPLANE variants to
++	 * non-MPLANE.
++	 * Open code this instead of using get_q_data in this case.
++	 */
++	if (ctx->dev->role != DECODE)
++		return -ENOIOCTLCMD;
++
++	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
++		return -EINVAL;
++
++	*f = ctx->q_data[V4L2_M2M_DST].aspect_ratio;
++
++	return 0;
++}
++
+ static int vidioc_subscribe_evt(struct v4l2_fh *fh,
+ 				const struct v4l2_event_subscription *sub)
+ {
+@@ -2082,6 +2109,8 @@ static const struct v4l2_ioctl_ops bcm28
+ 	.vidioc_g_parm		= vidioc_g_parm,
+ 	.vidioc_s_parm		= vidioc_s_parm,
+ 
++	.vidioc_g_pixelaspect	= vidioc_g_pixelaspect,
++
+ 	.vidioc_subscribe_event = vidioc_subscribe_evt,
+ 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+ 
+@@ -2640,6 +2669,8 @@ static int bcm2835_codec_open(struct fil
+ 			      ctx->q_data[V4L2_M2M_DST].crop_width,
+ 			      ctx->q_data[V4L2_M2M_DST].height,
+ 			      ctx->q_data[V4L2_M2M_DST].fmt);
++	ctx->q_data[V4L2_M2M_DST].aspect_ratio.numerator = 1;
++	ctx->q_data[V4L2_M2M_DST].aspect_ratio.denominator = 1;
+ 
+ 	ctx->colorspace = V4L2_COLORSPACE_REC709;
+ 	ctx->bitrate = 10 * 1000 * 1000;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0357-staging-bcm2835-codec-Implement-additional-g_selecti.patch b/target/linux/bcm27xx/patches-5.15/950-0357-staging-bcm2835-codec-Implement-additional-g_selecti.patch
new file mode 100644
index 0000000000..9c1fa2ba62
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0357-staging-bcm2835-codec-Implement-additional-g_selecti.patch
@@ -0,0 +1,35 @@
+From 87bb03be2c8ab1db246181ebeaf2588cda3dfd31 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 2 Feb 2021 16:46:39 +0000
+Subject: [PATCH] staging/bcm2835-codec: Implement additional
+ g_selection calls for decode
+
+v4l_cropcap calls our vidioc_g_pixelaspect function to get the pixel
+aspect ratio, but also calls g_selection for V4L2_SEL_TGT_CROP_BOUNDS
+and V4L2_SEL_TGT_CROP_DEFAULT. Whilst it allows for vidioc_g_pixelaspect
+not to be implemented, it doesn't allow for either of the other two.
+
+Add in support for the additional selection targets.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c      | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1517,6 +1517,14 @@ static int vidioc_g_selection(struct fil
+ 			s->r.width = q_data->crop_width;
+ 			s->r.height = q_data->crop_height;
+ 			break;
++		case V4L2_SEL_TGT_CROP_BOUNDS:
++		case V4L2_SEL_TGT_CROP_DEFAULT:
++			s->r.left = 0;
++			s->r.top = 0;
++			s->r.width = (q_data->bytesperline << 3) /
++						q_data->fmt->depth;
++			s->r.height = q_data->height;
++			break;
+ 		default:
+ 			return -EINVAL;
+ 		}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0358-staging-bcm2835-codec-Add-VC-1-support.patch b/target/linux/bcm27xx/patches-5.15/950-0358-staging-bcm2835-codec-Add-VC-1-support.patch
new file mode 100644
index 0000000000..25c0982101
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0358-staging-bcm2835-codec-Add-VC-1-support.patch
@@ -0,0 +1,29 @@
+From 0ebb1e9d7c922fb94b149783e46b20974b95a16d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 10 Mar 2021 19:07:48 +0000
+Subject: [PATCH] staging/bcm2835-codec: Add VC-1 support.
+
+Providing the relevant licence has been purchased, then Pi0-3
+can decode VC-1.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c       | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -576,7 +576,12 @@ static const struct bcm2835_codec_fmt su
+ 		.depth			= 0,
+ 		.flags			= V4L2_FMT_FLAG_COMPRESSED,
+ 		.mmal_fmt		= MMAL_ENCODING_VP8,
+-	},
++	}, {
++		.fourcc			= V4L2_PIX_FMT_VC1_ANNEX_G,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_WVC1,
++	}
+ };
+ 
+ struct bcm2835_codec_fmt_list {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0359-hack-fixup-bcm2835-unicam.patch b/target/linux/bcm27xx/patches-5.15/950-0359-hack-fixup-bcm2835-unicam.patch
new file mode 100644
index 0000000000..c45b4d1bd7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0359-hack-fixup-bcm2835-unicam.patch
@@ -0,0 +1,21 @@
+From 2320a8d1a847d31ffa678ad61970c138dd626113 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Wed, 17 Mar 2021 12:45:53 +0000
+Subject: [PATCH] hack: fixup bcm2835-unicam
+
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -72,6 +72,9 @@
+ #include <media/v4l2-fwnode.h>
+ #include <media/videobuf2-dma-contig.h>
+ 
++#include <media/v4l2-async.h>
++#define v4l2_async_notifier_add_subdev __v4l2_async_notifier_add_subdev
++
+ #include "vc4-regs-unicam.h"
+ 
+ #define UNICAM_MODULE_NAME	"unicam"
diff --git a/target/linux/bcm27xx/patches-5.15/950-0360-media-i2c-add-ov9281-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0360-media-i2c-add-ov9281-driver.patch
new file mode 100644
index 0000000000..7f11a6143a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0360-media-i2c-add-ov9281-driver.patch
@@ -0,0 +1,1218 @@
+From 2caa809318d62cff46258e8109a904c7b43b9ff7 Mon Sep 17 00:00:00 2001
+From: Zefa Chen <zefa.chen@rock-chips.com>
+Date: Fri, 17 May 2019 18:23:03 +0800
+Subject: [PATCH] media: i2c: add ov9281 driver.
+
+Change-Id: I7b77250bbc56d2f861450cf77271ad15f9b88ab1
+Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
+---
+ drivers/media/i2c/Kconfig  |   11 +
+ drivers/media/i2c/Makefile |    1 +
+ drivers/media/i2c/ov9281.c | 1171 ++++++++++++++++++++++++++++++++++++
+ 3 files changed, 1183 insertions(+)
+ create mode 100644 drivers/media/i2c/ov9281.c
+
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -1164,6 +1164,17 @@ config VIDEO_OV9640
+ 	  This is a Video4Linux2 sensor driver for the OmniVision
+ 	  OV9640 camera sensor.
+ 
++config VIDEO_OV9281
++	tristate "OmniVision OV9281 sensor support"
++	depends on I2C && VIDEO_V4L2
++	depends on MEDIA_CAMERA_SUPPORT
++	help
++	  This is a Video4Linux2 sensor-level driver for the OmniVision
++	  OV9281 camera.
++
++	  To compile this driver as a module, choose M here: the
++	  module will be called ov9281.
++
+ config VIDEO_OV9650
+ 	tristate "OmniVision OV9650/OV9652 sensor support"
+ 	depends on I2C && VIDEO_V4L2
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -84,6 +84,7 @@ obj-$(CONFIG_VIDEO_OV772X) += ov772x.o
+ obj-$(CONFIG_VIDEO_OV7740) += ov7740.o
+ obj-$(CONFIG_VIDEO_OV8856) += ov8856.o
+ obj-$(CONFIG_VIDEO_OV8865) += ov8865.o
++obj-$(CONFIG_VIDEO_OV9281) += ov9281.o
+ obj-$(CONFIG_VIDEO_OV9282) += ov9282.o
+ obj-$(CONFIG_VIDEO_OV9640) += ov9640.o
+ obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
+--- /dev/null
++++ b/drivers/media/i2c/ov9281.c
+@@ -0,0 +1,1171 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * ov9281 driver
++ *
++ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
++ */
++
++#include <linux/clk.h>
++#include <linux/device.h>
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/i2c.h>
++#include <linux/module.h>
++#include <linux/pm_runtime.h>
++#include <linux/regulator/consumer.h>
++#include <linux/sysfs.h>
++#include <linux/slab.h>
++#include <linux/rk-camera-module.h>
++#include <media/media-entity.h>
++#include <media/v4l2-async.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-subdev.h>
++#include <linux/pinctrl/consumer.h>
++
++#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x0)
++
++#ifndef V4L2_CID_DIGITAL_GAIN
++#define V4L2_CID_DIGITAL_GAIN		V4L2_CID_GAIN
++#endif
++
++#define OV9281_LINK_FREQ_400MHZ		400000000
++/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
++#define OV9281_PIXEL_RATE		(OV9281_LINK_FREQ_400MHZ * 2 * 2 / 10)
++#define OV9281_XVCLK_FREQ		24000000
++
++#define CHIP_ID				0x9281
++#define OV9281_REG_CHIP_ID		0x300a
++
++#define OV9281_REG_CTRL_MODE		0x0100
++#define OV9281_MODE_SW_STANDBY		0x0
++#define OV9281_MODE_STREAMING		BIT(0)
++
++#define OV9281_REG_EXPOSURE		0x3500
++#define	OV9281_EXPOSURE_MIN		4
++#define	OV9281_EXPOSURE_STEP		1
++#define OV9281_VTS_MAX			0x7fff
++
++#define OV9281_REG_GAIN_H		0x3508
++#define OV9281_REG_GAIN_L		0x3509
++#define OV9281_GAIN_H_MASK		0x07
++#define OV9281_GAIN_H_SHIFT		8
++#define OV9281_GAIN_L_MASK		0xff
++#define OV9281_GAIN_MIN			0x10
++#define OV9281_GAIN_MAX			0xf8
++#define OV9281_GAIN_STEP		1
++#define OV9281_GAIN_DEFAULT		0x10
++
++#define OV9281_REG_TEST_PATTERN		0x5e00
++#define OV9281_TEST_PATTERN_ENABLE	0x80
++#define OV9281_TEST_PATTERN_DISABLE	0x0
++
++#define OV9281_REG_VTS			0x380e
++
++#define REG_NULL			0xFFFF
++
++#define OV9281_REG_VALUE_08BIT		1
++#define OV9281_REG_VALUE_16BIT		2
++#define OV9281_REG_VALUE_24BIT		3
++
++#define OV9281_LANES			2
++#define OV9281_BITS_PER_SAMPLE		10
++
++#define OF_CAMERA_PINCTRL_STATE_DEFAULT	"rockchip,camera_default"
++#define OF_CAMERA_PINCTRL_STATE_SLEEP	"rockchip,camera_sleep"
++
++#define OV9281_NAME			"ov9281"
++
++static const char * const ov9281_supply_names[] = {
++	"avdd",		/* Analog power */
++	"dovdd",	/* Digital I/O power */
++	"dvdd",		/* Digital core power */
++};
++
++#define OV9281_NUM_SUPPLIES ARRAY_SIZE(ov9281_supply_names)
++
++struct regval {
++	u16 addr;
++	u8 val;
++};
++
++struct ov9281_mode {
++	u32 width;
++	u32 height;
++	u32 max_fps;
++	u32 hts_def;
++	u32 vts_def;
++	u32 exp_def;
++	const struct regval *reg_list;
++};
++
++struct ov9281 {
++	struct i2c_client	*client;
++	struct clk		*xvclk;
++	struct gpio_desc	*reset_gpio;
++	struct gpio_desc	*pwdn_gpio;
++	struct regulator_bulk_data supplies[OV9281_NUM_SUPPLIES];
++
++	struct pinctrl		*pinctrl;
++	struct pinctrl_state	*pins_default;
++	struct pinctrl_state	*pins_sleep;
++
++	struct v4l2_subdev	subdev;
++	struct media_pad	pad;
++	struct v4l2_ctrl_handler ctrl_handler;
++	struct v4l2_ctrl	*exposure;
++	struct v4l2_ctrl	*anal_gain;
++	struct v4l2_ctrl	*digi_gain;
++	struct v4l2_ctrl	*hblank;
++	struct v4l2_ctrl	*vblank;
++	struct v4l2_ctrl	*test_pattern;
++	struct mutex		mutex;
++	bool			streaming;
++	bool			power_on;
++	const struct ov9281_mode *cur_mode;
++	u32			module_index;
++	const char		*module_facing;
++	const char		*module_name;
++	const char		*len_name;
++};
++
++#define to_ov9281(sd) container_of(sd, struct ov9281, subdev)
++
++/*
++ * Xclk 24Mhz
++ */
++static const struct regval ov9281_global_regs[] = {
++	{REG_NULL, 0x00},
++};
++
++/*
++ * Xclk 24Mhz
++ * max_framerate 120fps
++ * mipi_datarate per lane 800Mbps
++ */
++static const struct regval ov9281_1280x800_regs[] = {
++	{0x0103, 0x01},
++	{0x0302, 0x32},
++	{0x030d, 0x50},
++	{0x030e, 0x02},
++	{0x3001, 0x00},
++	{0x3004, 0x00},
++	{0x3005, 0x00},
++	{0x3006, 0x04},
++	{0x3011, 0x0a},
++	{0x3013, 0x18},
++	{0x3022, 0x01},
++	{0x3023, 0x00},
++	{0x302c, 0x00},
++	{0x302f, 0x00},
++	{0x3030, 0x04},
++	{0x3039, 0x32},
++	{0x303a, 0x00},
++	{0x303f, 0x01},
++	{0x3500, 0x00},
++	{0x3501, 0x2a},
++	{0x3502, 0x90},
++	{0x3503, 0x08},
++	{0x3505, 0x8c},
++	{0x3507, 0x03},
++	{0x3508, 0x00},
++	{0x3509, 0x10},
++	{0x3610, 0x80},
++	{0x3611, 0xa0},
++	{0x3620, 0x6f},
++	{0x3632, 0x56},
++	{0x3633, 0x78},
++	{0x3662, 0x05},
++	{0x3666, 0x00},
++	{0x366f, 0x5a},
++	{0x3680, 0x84},
++	{0x3712, 0x80},
++	{0x372d, 0x22},
++	{0x3731, 0x80},
++	{0x3732, 0x30},
++	{0x3778, 0x00},
++	{0x377d, 0x22},
++	{0x3788, 0x02},
++	{0x3789, 0xa4},
++	{0x378a, 0x00},
++	{0x378b, 0x4a},
++	{0x3799, 0x20},
++	{0x3800, 0x00},
++	{0x3801, 0x00},
++	{0x3802, 0x00},
++	{0x3803, 0x00},
++	{0x3804, 0x05},
++	{0x3805, 0x0f},
++	{0x3806, 0x03},
++	{0x3807, 0x2f},
++	{0x3808, 0x05},
++	{0x3809, 0x00},
++	{0x380a, 0x03},
++	{0x380b, 0x20},
++	{0x380c, 0x02},
++	{0x380d, 0xd8},
++	{0x380e, 0x03},
++	{0x380f, 0x8e},
++	{0x3810, 0x00},
++	{0x3811, 0x08},
++	{0x3812, 0x00},
++	{0x3813, 0x08},
++	{0x3814, 0x11},
++	{0x3815, 0x11},
++	{0x3820, 0x40},
++	{0x3821, 0x00},
++	{0x3881, 0x42},
++	{0x38b1, 0x00},
++	{0x3920, 0xff},
++	{0x4003, 0x40},
++	{0x4008, 0x04},
++	{0x4009, 0x0b},
++	{0x400c, 0x00},
++	{0x400d, 0x07},
++	{0x4010, 0x40},
++	{0x4043, 0x40},
++	{0x4307, 0x30},
++	{0x4317, 0x00},
++	{0x4501, 0x00},
++	{0x4507, 0x00},
++	{0x4509, 0x00},
++	{0x450a, 0x08},
++	{0x4601, 0x04},
++	{0x470f, 0x00},
++	{0x4f07, 0x00},
++	{0x4800, 0x00},
++	{0x5000, 0x9f},
++	{0x5001, 0x00},
++	{0x5e00, 0x00},
++	{0x5d00, 0x07},
++	{0x5d01, 0x00},
++	{REG_NULL, 0x00},
++};
++
++static const struct ov9281_mode supported_modes[] = {
++	{
++		.width = 1280,
++		.height = 800,
++		.max_fps = 120,
++		.exp_def = 0x0320,
++		.hts_def = 0x0b60,//0x2d8*4
++		.vts_def = 0x038e,
++		.reg_list = ov9281_1280x800_regs,
++	},
++};
++
++static const s64 link_freq_menu_items[] = {
++	OV9281_LINK_FREQ_400MHZ
++};
++
++static const char * const ov9281_test_pattern_menu[] = {
++	"Disabled",
++	"Vertical Color Bar Type 1",
++	"Vertical Color Bar Type 2",
++	"Vertical Color Bar Type 3",
++	"Vertical Color Bar Type 4"
++};
++
++/* Write registers up to 4 at a time */
++static int ov9281_write_reg(struct i2c_client *client, u16 reg,
++			    u32 len, u32 val)
++{
++	u32 buf_i, val_i;
++	u8 buf[6];
++	u8 *val_p;
++	__be32 val_be;
++
++	if (len > 4)
++		return -EINVAL;
++
++	buf[0] = reg >> 8;
++	buf[1] = reg & 0xff;
++
++	val_be = cpu_to_be32(val);
++	val_p = (u8 *)&val_be;
++	buf_i = 2;
++	val_i = 4 - len;
++
++	while (val_i < 4)
++		buf[buf_i++] = val_p[val_i++];
++
++	if (i2c_master_send(client, buf, len + 2) != len + 2)
++		return -EIO;
++
++	return 0;
++}
++
++static int ov9281_write_array(struct i2c_client *client,
++			      const struct regval *regs)
++{
++	u32 i;
++	int ret = 0;
++
++	for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++)
++		ret = ov9281_write_reg(client, regs[i].addr,
++				       OV9281_REG_VALUE_08BIT, regs[i].val);
++
++	return ret;
++}
++
++/* Read registers up to 4 at a time */
++static int ov9281_read_reg(struct i2c_client *client, u16 reg, unsigned int len,
++			   u32 *val)
++{
++	struct i2c_msg msgs[2];
++	u8 *data_be_p;
++	__be32 data_be = 0;
++	__be16 reg_addr_be = cpu_to_be16(reg);
++	int ret;
++
++	if (len > 4 || !len)
++		return -EINVAL;
++
++	data_be_p = (u8 *)&data_be;
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = 2;
++	msgs[0].buf = (u8 *)&reg_addr_be;
++
++	/* Read data from register */
++	msgs[1].addr = client->addr;
++	msgs[1].flags = I2C_M_RD;
++	msgs[1].len = len;
++	msgs[1].buf = &data_be_p[4 - len];
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	*val = be32_to_cpu(data_be);
++
++	return 0;
++}
++
++static int ov9281_get_reso_dist(const struct ov9281_mode *mode,
++				struct v4l2_mbus_framefmt *framefmt)
++{
++	return abs(mode->width - framefmt->width) +
++	       abs(mode->height - framefmt->height);
++}
++
++static const struct ov9281_mode *
++ov9281_find_best_fit(struct v4l2_subdev_format *fmt)
++{
++	struct v4l2_mbus_framefmt *framefmt = &fmt->format;
++	int dist;
++	int cur_best_fit = 0;
++	int cur_best_fit_dist = -1;
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
++		dist = ov9281_get_reso_dist(&supported_modes[i], framefmt);
++		if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) {
++			cur_best_fit_dist = dist;
++			cur_best_fit = i;
++		}
++	}
++
++	return &supported_modes[cur_best_fit];
++}
++
++static int ov9281_set_fmt(struct v4l2_subdev *sd,
++			  struct v4l2_subdev_pad_config *cfg,
++			  struct v4l2_subdev_format *fmt)
++{
++	struct ov9281 *ov9281 = to_ov9281(sd);
++	const struct ov9281_mode *mode;
++	s64 h_blank, vblank_def;
++
++	mutex_lock(&ov9281->mutex);
++
++	mode = ov9281_find_best_fit(fmt);
++	fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
++	fmt->format.width = mode->width;
++	fmt->format.height = mode->height;
++	fmt->format.field = V4L2_FIELD_NONE;
++	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
++		*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
++#else
++		mutex_unlock(&ov9281->mutex);
++		return -ENOTTY;
++#endif
++	} else {
++		ov9281->cur_mode = mode;
++		h_blank = mode->hts_def - mode->width;
++		__v4l2_ctrl_modify_range(ov9281->hblank, h_blank,
++					 h_blank, 1, h_blank);
++		vblank_def = mode->vts_def - mode->height;
++		__v4l2_ctrl_modify_range(ov9281->vblank, vblank_def,
++					 OV9281_VTS_MAX - mode->height,
++					 1, vblank_def);
++	}
++
++	mutex_unlock(&ov9281->mutex);
++
++	return 0;
++}
++
++static int ov9281_get_fmt(struct v4l2_subdev *sd,
++			  struct v4l2_subdev_pad_config *cfg,
++			  struct v4l2_subdev_format *fmt)
++{
++	struct ov9281 *ov9281 = to_ov9281(sd);
++	const struct ov9281_mode *mode = ov9281->cur_mode;
++
++	mutex_lock(&ov9281->mutex);
++	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
++		fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
++#else
++		mutex_unlock(&ov9281->mutex);
++		return -ENOTTY;
++#endif
++	} else {
++		fmt->format.width = mode->width;
++		fmt->format.height = mode->height;
++		fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
++		fmt->format.field = V4L2_FIELD_NONE;
++	}
++	mutex_unlock(&ov9281->mutex);
++
++	return 0;
++}
++
++static int ov9281_enum_mbus_code(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_mbus_code_enum *code)
++{
++	if (code->index != 0)
++		return -EINVAL;
++	code->code = MEDIA_BUS_FMT_Y10_1X10;
++
++	return 0;
++}
++
++static int ov9281_enum_frame_sizes(struct v4l2_subdev *sd,
++				   struct v4l2_subdev_pad_config *cfg,
++				   struct v4l2_subdev_frame_size_enum *fse)
++{
++	if (fse->index >= ARRAY_SIZE(supported_modes))
++		return -EINVAL;
++
++	if (fse->code != MEDIA_BUS_FMT_Y10_1X10)
++		return -EINVAL;
++
++	fse->min_width  = supported_modes[fse->index].width;
++	fse->max_width  = supported_modes[fse->index].width;
++	fse->max_height = supported_modes[fse->index].height;
++	fse->min_height = supported_modes[fse->index].height;
++
++	return 0;
++}
++
++static int ov9281_enable_test_pattern(struct ov9281 *ov9281, u32 pattern)
++{
++	u32 val;
++
++	if (pattern)
++		val = (pattern - 1) | OV9281_TEST_PATTERN_ENABLE;
++	else
++		val = OV9281_TEST_PATTERN_DISABLE;
++
++	return ov9281_write_reg(ov9281->client, OV9281_REG_TEST_PATTERN,
++				OV9281_REG_VALUE_08BIT, val);
++}
++
++static int OV9281_g_frame_interval(struct v4l2_subdev *sd,
++				   struct v4l2_subdev_frame_interval *fi)
++{
++	struct ov9281 *ov9281 = to_ov9281(sd);
++	const struct ov9281_mode *mode = ov9281->cur_mode;
++
++	mutex_lock(&ov9281->mutex);
++	fi->interval.numerator = 10000;
++	fi->interval.denominator = mode->max_fps * 10000;
++	mutex_unlock(&ov9281->mutex);
++
++	return 0;
++}
++
++static void ov9281_get_module_inf(struct ov9281 *ov9281,
++				  struct rkmodule_inf *inf)
++{
++	memset(inf, 0, sizeof(*inf));
++	strlcpy(inf->base.sensor, OV9281_NAME, sizeof(inf->base.sensor));
++	strlcpy(inf->base.module, ov9281->module_name,
++		sizeof(inf->base.module));
++	strlcpy(inf->base.lens, ov9281->len_name, sizeof(inf->base.lens));
++}
++
++static long ov9281_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
++{
++	struct ov9281 *ov9281 = to_ov9281(sd);
++	long ret = 0;
++
++	switch (cmd) {
++	case RKMODULE_GET_MODULE_INFO:
++		ov9281_get_module_inf(ov9281, (struct rkmodule_inf *)arg);
++		break;
++	default:
++		ret = -ENOIOCTLCMD;
++		break;
++	}
++
++	return ret;
++}
++
++#ifdef CONFIG_COMPAT
++static long ov9281_compat_ioctl32(struct v4l2_subdev *sd,
++				  unsigned int cmd, unsigned long arg)
++{
++	void __user *up = compat_ptr(arg);
++	struct rkmodule_inf *inf;
++	struct rkmodule_awb_cfg *cfg;
++	long ret;
++
++	switch (cmd) {
++	case RKMODULE_GET_MODULE_INFO:
++		inf = kzalloc(sizeof(*inf), GFP_KERNEL);
++		if (!inf) {
++			ret = -ENOMEM;
++			return ret;
++		}
++
++		ret = ov9281_ioctl(sd, cmd, inf);
++		if (!ret)
++			ret = copy_to_user(up, inf, sizeof(*inf));
++		kfree(inf);
++		break;
++	case RKMODULE_AWB_CFG:
++		cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
++		if (!cfg) {
++			ret = -ENOMEM;
++			return ret;
++		}
++
++		ret = copy_from_user(cfg, up, sizeof(*cfg));
++		if (!ret)
++			ret = ov9281_ioctl(sd, cmd, cfg);
++		kfree(cfg);
++		break;
++	default:
++		ret = -ENOIOCTLCMD;
++		break;
++	}
++
++	return ret;
++}
++#endif
++
++static int __ov9281_start_stream(struct ov9281 *ov9281)
++{
++	int ret;
++
++	ret = ov9281_write_array(ov9281->client, ov9281->cur_mode->reg_list);
++	if (ret)
++		return ret;
++
++	/* In case these controls are set before streaming */
++	mutex_unlock(&ov9281->mutex);
++	ret = v4l2_ctrl_handler_setup(&ov9281->ctrl_handler);
++	mutex_lock(&ov9281->mutex);
++	if (ret)
++		return ret;
++
++	return ov9281_write_reg(ov9281->client, OV9281_REG_CTRL_MODE,
++				OV9281_REG_VALUE_08BIT, OV9281_MODE_STREAMING);
++}
++
++static int __ov9281_stop_stream(struct ov9281 *ov9281)
++{
++	return ov9281_write_reg(ov9281->client, OV9281_REG_CTRL_MODE,
++				OV9281_REG_VALUE_08BIT, OV9281_MODE_SW_STANDBY);
++}
++
++static int ov9281_s_stream(struct v4l2_subdev *sd, int on)
++{
++	struct ov9281 *ov9281 = to_ov9281(sd);
++	struct i2c_client *client = ov9281->client;
++	int ret = 0;
++
++	mutex_lock(&ov9281->mutex);
++	on = !!on;
++	if (on == ov9281->streaming)
++		goto unlock_and_return;
++
++	if (on) {
++		ret = pm_runtime_get_sync(&client->dev);
++		if (ret < 0) {
++			pm_runtime_put_noidle(&client->dev);
++			goto unlock_and_return;
++		}
++
++		ret = __ov9281_start_stream(ov9281);
++		if (ret) {
++			v4l2_err(sd, "start stream failed while write regs\n");
++			pm_runtime_put(&client->dev);
++			goto unlock_and_return;
++		}
++	} else {
++		__ov9281_stop_stream(ov9281);
++		pm_runtime_put(&client->dev);
++	}
++
++	ov9281->streaming = on;
++
++unlock_and_return:
++	mutex_unlock(&ov9281->mutex);
++
++	return ret;
++}
++
++static int ov9281_s_power(struct v4l2_subdev *sd, int on)
++{
++	struct ov9281 *ov9281 = to_ov9281(sd);
++	struct i2c_client *client = ov9281->client;
++	int ret = 0;
++
++	mutex_lock(&ov9281->mutex);
++
++	/* If the power state is not modified - no work to do. */
++	if (ov9281->power_on == !!on)
++		goto unlock_and_return;
++
++	if (on) {
++		ret = pm_runtime_get_sync(&client->dev);
++		if (ret < 0) {
++			pm_runtime_put_noidle(&client->dev);
++			goto unlock_and_return;
++		}
++		ret = ov9281_write_array(ov9281->client, ov9281_global_regs);
++		if (ret) {
++			v4l2_err(sd, "could not set init registers\n");
++			pm_runtime_put_noidle(&client->dev);
++			goto unlock_and_return;
++		}
++		ov9281->power_on = true;
++	} else {
++		pm_runtime_put(&client->dev);
++		ov9281->power_on = false;
++	}
++
++unlock_and_return:
++	mutex_unlock(&ov9281->mutex);
++
++	return ret;
++}
++
++/* Calculate the delay in us by clock rate and clock cycles */
++static inline u32 ov9281_cal_delay(u32 cycles)
++{
++	return DIV_ROUND_UP(cycles, OV9281_XVCLK_FREQ / 1000 / 1000);
++}
++
++static int __ov9281_power_on(struct ov9281 *ov9281)
++{
++	int ret;
++	u32 delay_us;
++	struct device *dev = &ov9281->client->dev;
++
++	if (!IS_ERR_OR_NULL(ov9281->pins_default)) {
++		ret = pinctrl_select_state(ov9281->pinctrl,
++					   ov9281->pins_default);
++		if (ret < 0)
++			dev_err(dev, "could not set pins\n");
++	}
++
++	ret = clk_prepare_enable(ov9281->xvclk);
++	if (ret < 0) {
++		dev_err(dev, "Failed to enable xvclk\n");
++		return ret;
++	}
++
++	if (!IS_ERR(ov9281->reset_gpio))
++		gpiod_set_value_cansleep(ov9281->reset_gpio, 0);
++
++	ret = regulator_bulk_enable(OV9281_NUM_SUPPLIES, ov9281->supplies);
++	if (ret < 0) {
++		dev_err(dev, "Failed to enable regulators\n");
++		goto disable_clk;
++	}
++
++	if (!IS_ERR(ov9281->reset_gpio))
++		gpiod_set_value_cansleep(ov9281->reset_gpio, 1);
++
++	usleep_range(500, 1000);
++	if (!IS_ERR(ov9281->pwdn_gpio))
++		gpiod_set_value_cansleep(ov9281->pwdn_gpio, 1);
++
++	/* 8192 cycles prior to first SCCB transaction */
++	delay_us = ov9281_cal_delay(8192);
++	usleep_range(delay_us, delay_us * 2);
++
++	return 0;
++
++disable_clk:
++	clk_disable_unprepare(ov9281->xvclk);
++
++	return ret;
++}
++
++static void __ov9281_power_off(struct ov9281 *ov9281)
++{
++	int ret;
++	struct device *dev = &ov9281->client->dev;
++
++	if (!IS_ERR(ov9281->pwdn_gpio))
++		gpiod_set_value_cansleep(ov9281->pwdn_gpio, 0);
++	clk_disable_unprepare(ov9281->xvclk);
++	if (!IS_ERR(ov9281->reset_gpio))
++		gpiod_set_value_cansleep(ov9281->reset_gpio, 0);
++	if (!IS_ERR_OR_NULL(ov9281->pins_sleep)) {
++		ret = pinctrl_select_state(ov9281->pinctrl,
++					   ov9281->pins_sleep);
++		if (ret < 0)
++			dev_dbg(dev, "could not set pins\n");
++	}
++	regulator_bulk_disable(OV9281_NUM_SUPPLIES, ov9281->supplies);
++}
++
++static int ov9281_runtime_resume(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct ov9281 *ov9281 = to_ov9281(sd);
++
++	return __ov9281_power_on(ov9281);
++}
++
++static int ov9281_runtime_suspend(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct ov9281 *ov9281 = to_ov9281(sd);
++
++	__ov9281_power_off(ov9281);
++
++	return 0;
++}
++
++#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
++static int ov9281_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct ov9281 *ov9281 = to_ov9281(sd);
++	struct v4l2_mbus_framefmt *try_fmt =
++				v4l2_subdev_get_try_format(sd, fh->pad, 0);
++	const struct ov9281_mode *def_mode = &supported_modes[0];
++
++	mutex_lock(&ov9281->mutex);
++	/* Initialize try_fmt */
++	try_fmt->width = def_mode->width;
++	try_fmt->height = def_mode->height;
++	try_fmt->code = MEDIA_BUS_FMT_Y10_1X10;
++	try_fmt->field = V4L2_FIELD_NONE;
++
++	mutex_unlock(&ov9281->mutex);
++	/* No crop or compose */
++
++	return 0;
++}
++#endif
++
++static const struct dev_pm_ops ov9281_pm_ops = {
++	SET_RUNTIME_PM_OPS(ov9281_runtime_suspend,
++			   ov9281_runtime_resume, NULL)
++};
++
++#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
++static const struct v4l2_subdev_internal_ops ov9281_internal_ops = {
++	.open = ov9281_open,
++};
++#endif
++
++static const struct v4l2_subdev_core_ops ov9281_core_ops = {
++	.s_power = ov9281_s_power,
++	.ioctl = ov9281_ioctl,
++#ifdef CONFIG_COMPAT
++	.compat_ioctl32 = ov9281_compat_ioctl32,
++#endif
++};
++
++static const struct v4l2_subdev_video_ops ov9281_video_ops = {
++	.s_stream = ov9281_s_stream,
++	.g_frame_interval = OV9281_g_frame_interval,
++};
++
++static const struct v4l2_subdev_pad_ops ov9281_pad_ops = {
++	.enum_mbus_code = ov9281_enum_mbus_code,
++	.enum_frame_size = ov9281_enum_frame_sizes,
++	.get_fmt = ov9281_get_fmt,
++	.set_fmt = ov9281_set_fmt,
++};
++
++static const struct v4l2_subdev_ops ov9281_subdev_ops = {
++	.core	= &ov9281_core_ops,
++	.video	= &ov9281_video_ops,
++	.pad	= &ov9281_pad_ops,
++};
++
++static int ov9281_set_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct ov9281 *ov9281 = container_of(ctrl->handler,
++					     struct ov9281, ctrl_handler);
++	struct i2c_client *client = ov9281->client;
++	s64 max;
++	int ret = 0;
++
++	/* Propagate change of current control to all related controls */
++	switch (ctrl->id) {
++	case V4L2_CID_VBLANK:
++		/* Update max exposure while meeting expected vblanking */
++		max = ov9281->cur_mode->height + ctrl->val - 4;
++		__v4l2_ctrl_modify_range(ov9281->exposure,
++					 ov9281->exposure->minimum, max,
++					 ov9281->exposure->step,
++					 ov9281->exposure->default_value);
++		break;
++	}
++
++	if (pm_runtime_get(&client->dev) <= 0)
++		return 0;
++
++	switch (ctrl->id) {
++	case V4L2_CID_EXPOSURE:
++		/* 4 least significant bits of expsoure are fractional part */
++		ret = ov9281_write_reg(ov9281->client, OV9281_REG_EXPOSURE,
++				       OV9281_REG_VALUE_24BIT, ctrl->val << 4);
++		break;
++	case V4L2_CID_ANALOGUE_GAIN:
++		ret = ov9281_write_reg(ov9281->client, OV9281_REG_GAIN_H,
++				       OV9281_REG_VALUE_08BIT,
++				       (ctrl->val >> OV9281_GAIN_H_SHIFT) & OV9281_GAIN_H_MASK);
++		ret |= ov9281_write_reg(ov9281->client, OV9281_REG_GAIN_L,
++				       OV9281_REG_VALUE_08BIT,
++				       ctrl->val & OV9281_GAIN_L_MASK);
++		break;
++	case V4L2_CID_VBLANK:
++		ret = ov9281_write_reg(ov9281->client, OV9281_REG_VTS,
++				       OV9281_REG_VALUE_16BIT,
++				       ctrl->val + ov9281->cur_mode->height);
++		break;
++	case V4L2_CID_TEST_PATTERN:
++		ret = ov9281_enable_test_pattern(ov9281, ctrl->val);
++		break;
++	default:
++		dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
++			 __func__, ctrl->id, ctrl->val);
++		break;
++	}
++
++	pm_runtime_put(&client->dev);
++
++	return ret;
++}
++
++static const struct v4l2_ctrl_ops ov9281_ctrl_ops = {
++	.s_ctrl = ov9281_set_ctrl,
++};
++
++static int ov9281_initialize_controls(struct ov9281 *ov9281)
++{
++	const struct ov9281_mode *mode;
++	struct v4l2_ctrl_handler *handler;
++	struct v4l2_ctrl *ctrl;
++	s64 exposure_max, vblank_def;
++	u32 h_blank;
++	int ret;
++
++	handler = &ov9281->ctrl_handler;
++	mode = ov9281->cur_mode;
++	ret = v4l2_ctrl_handler_init(handler, 8);
++	if (ret)
++		return ret;
++	handler->lock = &ov9281->mutex;
++
++	ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
++				      0, 0, link_freq_menu_items);
++	if (ctrl)
++		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++
++	v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
++			  0, OV9281_PIXEL_RATE, 1, OV9281_PIXEL_RATE);
++
++	h_blank = mode->hts_def - mode->width;
++	ov9281->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
++				h_blank, h_blank, 1, h_blank);
++	if (ov9281->hblank)
++		ov9281->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++
++	vblank_def = mode->vts_def - mode->height;
++	ov9281->vblank = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
++				V4L2_CID_VBLANK, vblank_def,
++				OV9281_VTS_MAX - mode->height,
++				1, vblank_def);
++
++	exposure_max = mode->vts_def - 4;
++	ov9281->exposure = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
++				V4L2_CID_EXPOSURE, OV9281_EXPOSURE_MIN,
++				exposure_max, OV9281_EXPOSURE_STEP,
++				mode->exp_def);
++
++	ov9281->anal_gain = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
++				V4L2_CID_ANALOGUE_GAIN, OV9281_GAIN_MIN,
++				OV9281_GAIN_MAX, OV9281_GAIN_STEP,
++				OV9281_GAIN_DEFAULT);
++
++	ov9281->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
++				&ov9281_ctrl_ops, V4L2_CID_TEST_PATTERN,
++				ARRAY_SIZE(ov9281_test_pattern_menu) - 1,
++				0, 0, ov9281_test_pattern_menu);
++
++	if (handler->error) {
++		ret = handler->error;
++		dev_err(&ov9281->client->dev,
++			"Failed to init controls(%d)\n", ret);
++		goto err_free_handler;
++	}
++
++	ov9281->subdev.ctrl_handler = handler;
++
++	return 0;
++
++err_free_handler:
++	v4l2_ctrl_handler_free(handler);
++
++	return ret;
++}
++
++static int ov9281_check_sensor_id(struct ov9281 *ov9281,
++				  struct i2c_client *client)
++{
++	struct device *dev = &ov9281->client->dev;
++	u32 id = 0;
++	int ret;
++
++	ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID,
++			      OV9281_REG_VALUE_16BIT, &id);
++	if (id != CHIP_ID) {
++		dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret);
++		return -ENODEV;
++	}
++
++	dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID);
++
++	return 0;
++}
++
++static int ov9281_configure_regulators(struct ov9281 *ov9281)
++{
++	unsigned int i;
++
++	for (i = 0; i < OV9281_NUM_SUPPLIES; i++)
++		ov9281->supplies[i].supply = ov9281_supply_names[i];
++
++	return devm_regulator_bulk_get(&ov9281->client->dev,
++				       OV9281_NUM_SUPPLIES,
++				       ov9281->supplies);
++}
++
++static int ov9281_probe(struct i2c_client *client,
++			const struct i2c_device_id *id)
++{
++	struct device *dev = &client->dev;
++	struct device_node *node = dev->of_node;
++	struct ov9281 *ov9281;
++	struct v4l2_subdev *sd;
++	char facing[2];
++	int ret;
++
++	dev_info(dev, "driver version: %02x.%02x.%02x",
++		DRIVER_VERSION >> 16,
++		(DRIVER_VERSION & 0xff00) >> 8,
++		DRIVER_VERSION & 0x00ff);
++
++	ov9281 = devm_kzalloc(dev, sizeof(*ov9281), GFP_KERNEL);
++	if (!ov9281)
++		return -ENOMEM;
++
++	ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
++				   &ov9281->module_index);
++	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
++				       &ov9281->module_facing);
++	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
++				       &ov9281->module_name);
++	ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
++				       &ov9281->len_name);
++	if (ret) {
++		dev_err(dev, "could not get module information!\n");
++		return -EINVAL;
++	}
++
++	ov9281->client = client;
++	ov9281->cur_mode = &supported_modes[0];
++
++	ov9281->xvclk = devm_clk_get(dev, "xvclk");
++	if (IS_ERR(ov9281->xvclk)) {
++		dev_err(dev, "Failed to get xvclk\n");
++		return -EINVAL;
++	}
++	ret = clk_set_rate(ov9281->xvclk, OV9281_XVCLK_FREQ);
++	if (ret < 0) {
++		dev_err(dev, "Failed to set xvclk rate (24MHz)\n");
++		return ret;
++	}
++	if (clk_get_rate(ov9281->xvclk) != OV9281_XVCLK_FREQ)
++		dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
++
++	ov9281->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
++	if (IS_ERR(ov9281->reset_gpio))
++		dev_warn(dev, "Failed to get reset-gpios\n");
++
++	ov9281->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
++	if (IS_ERR(ov9281->pwdn_gpio))
++		dev_warn(dev, "Failed to get pwdn-gpios\n");
++
++	ov9281->pinctrl = devm_pinctrl_get(dev);
++	if (!IS_ERR(ov9281->pinctrl)) {
++		ov9281->pins_default =
++			pinctrl_lookup_state(ov9281->pinctrl,
++					     OF_CAMERA_PINCTRL_STATE_DEFAULT);
++		if (IS_ERR(ov9281->pins_default))
++			dev_err(dev, "could not get default pinstate\n");
++
++		ov9281->pins_sleep =
++			pinctrl_lookup_state(ov9281->pinctrl,
++					     OF_CAMERA_PINCTRL_STATE_SLEEP);
++		if (IS_ERR(ov9281->pins_sleep))
++			dev_err(dev, "could not get sleep pinstate\n");
++	} else {
++		dev_err(dev, "no pinctrl\n");
++	}
++
++	ret = ov9281_configure_regulators(ov9281);
++	if (ret) {
++		dev_err(dev, "Failed to get power regulators\n");
++		return ret;
++	}
++
++	mutex_init(&ov9281->mutex);
++
++	sd = &ov9281->subdev;
++	v4l2_i2c_subdev_init(sd, client, &ov9281_subdev_ops);
++	ret = ov9281_initialize_controls(ov9281);
++	if (ret)
++		goto err_destroy_mutex;
++
++	ret = __ov9281_power_on(ov9281);
++	if (ret)
++		goto err_free_handler;
++
++	ret = ov9281_check_sensor_id(ov9281, client);
++	if (ret)
++		goto err_power_off;
++
++#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
++	sd->internal_ops = &ov9281_internal_ops;
++	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
++#endif
++#if defined(CONFIG_MEDIA_CONTROLLER)
++	ov9281->pad.flags = MEDIA_PAD_FL_SOURCE;
++	sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
++	ret = media_entity_init(&sd->entity, 1, &ov9281->pad, 0);
++	if (ret < 0)
++		goto err_power_off;
++#endif
++
++	memset(facing, 0, sizeof(facing));
++	if (strcmp(ov9281->module_facing, "back") == 0)
++		facing[0] = 'b';
++	else
++		facing[0] = 'f';
++
++	snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
++		 ov9281->module_index, facing,
++		 OV9281_NAME, dev_name(sd->dev));
++	ret = v4l2_async_register_subdev_sensor(sd);
++	if (ret) {
++		dev_err(dev, "v4l2 async register subdev failed\n");
++		goto err_clean_entity;
++	}
++
++	pm_runtime_set_active(dev);
++	pm_runtime_enable(dev);
++	pm_runtime_idle(dev);
++
++	return 0;
++
++err_clean_entity:
++#if defined(CONFIG_MEDIA_CONTROLLER)
++	media_entity_cleanup(&sd->entity);
++#endif
++err_power_off:
++	__ov9281_power_off(ov9281);
++err_free_handler:
++	v4l2_ctrl_handler_free(&ov9281->ctrl_handler);
++err_destroy_mutex:
++	mutex_destroy(&ov9281->mutex);
++
++	return ret;
++}
++
++static int ov9281_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct ov9281 *ov9281 = to_ov9281(sd);
++
++	v4l2_async_unregister_subdev(sd);
++#if defined(CONFIG_MEDIA_CONTROLLER)
++	media_entity_cleanup(&sd->entity);
++#endif
++	v4l2_ctrl_handler_free(&ov9281->ctrl_handler);
++	mutex_destroy(&ov9281->mutex);
++
++	pm_runtime_disable(&client->dev);
++	if (!pm_runtime_status_suspended(&client->dev))
++		__ov9281_power_off(ov9281);
++	pm_runtime_set_suspended(&client->dev);
++
++	return 0;
++}
++
++#if IS_ENABLED(CONFIG_OF)
++static const struct of_device_id ov9281_of_match[] = {
++	{ .compatible = "ovti,ov9281" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, ov9281_of_match);
++#endif
++
++static const struct i2c_device_id ov9281_match_id[] = {
++	{ "ovti,ov9281", 0 },
++	{ },
++};
++
++static struct i2c_driver ov9281_i2c_driver = {
++	.driver = {
++		.name = OV9281_NAME,
++		.pm = &ov9281_pm_ops,
++		.of_match_table = of_match_ptr(ov9281_of_match),
++	},
++	.probe		= &ov9281_probe,
++	.remove		= &ov9281_remove,
++	.id_table	= ov9281_match_id,
++};
++
++static int __init sensor_mod_init(void)
++{
++	return i2c_add_driver(&ov9281_i2c_driver);
++}
++
++static void __exit sensor_mod_exit(void)
++{
++	i2c_del_driver(&ov9281_i2c_driver);
++}
++
++device_initcall_sync(sensor_mod_init);
++module_exit(sensor_mod_exit);
++
++MODULE_DESCRIPTION("OmniVision ov9281 sensor driver");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0361-media-i2c-ov9281-fix-mclk-issue-when-probe-multiple-.patch b/target/linux/bcm27xx/patches-5.15/950-0361-media-i2c-ov9281-fix-mclk-issue-when-probe-multiple-.patch
new file mode 100644
index 0000000000..1703278828
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0361-media-i2c-ov9281-fix-mclk-issue-when-probe-multiple-.patch
@@ -0,0 +1,60 @@
+From 9c9fb7cc79522452903f48f6f57b9fd83ad3f4ec Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 14 Apr 2020 15:47:09 +0100
+Subject: [PATCH] media: i2c: ov9281: fix mclk issue when probe
+ multiple camera.
+
+Takes the ov9281 part only from the Rockchip's patch.
+
+Change-Id: I30e833baf2c1bb07d6d87ddb3b00759ab45a90e4
+Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
+---
+ drivers/media/i2c/ov9281.c | 16 ++++++++--------
+ 1 file changed, 8 insertions(+), 8 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -3,6 +3,7 @@
+  * ov9281 driver
+  *
+  * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
++ * V0.0X01.0X02 fix mclk issue when probe multiple camera.
+  */
+ 
+ #include <linux/clk.h>
+@@ -22,7 +23,7 @@
+ #include <media/v4l2-subdev.h>
+ #include <linux/pinctrl/consumer.h>
+ 
+-#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x0)
++#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x2)
+ 
+ #ifndef V4L2_CID_DIGITAL_GAIN
+ #define V4L2_CID_DIGITAL_GAIN		V4L2_CID_GAIN
+@@ -676,6 +677,12 @@ static int __ov9281_power_on(struct ov92
+ 			dev_err(dev, "could not set pins\n");
+ 	}
+ 
++	ret = clk_set_rate(ov9281->xvclk, OV9281_XVCLK_FREQ);
++	if (ret < 0)
++		dev_warn(dev, "Failed to set xvclk rate (24MHz)\n");
++	if (clk_get_rate(ov9281->xvclk) != OV9281_XVCLK_FREQ)
++		dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
++
+ 	ret = clk_prepare_enable(ov9281->xvclk);
+ 	if (ret < 0) {
+ 		dev_err(dev, "Failed to enable xvclk\n");
+@@ -1008,13 +1015,6 @@ static int ov9281_probe(struct i2c_clien
+ 		dev_err(dev, "Failed to get xvclk\n");
+ 		return -EINVAL;
+ 	}
+-	ret = clk_set_rate(ov9281->xvclk, OV9281_XVCLK_FREQ);
+-	if (ret < 0) {
+-		dev_err(dev, "Failed to set xvclk rate (24MHz)\n");
+-		return ret;
+-	}
+-	if (clk_get_rate(ov9281->xvclk) != OV9281_XVCLK_FREQ)
+-		dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
+ 
+ 	ov9281->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ 	if (IS_ERR(ov9281->reset_gpio))
diff --git a/target/linux/bcm27xx/patches-5.15/950-0362-media-i2c-ov9281-add-enum_frame_interval-function-fo.patch b/target/linux/bcm27xx/patches-5.15/950-0362-media-i2c-ov9281-add-enum_frame_interval-function-fo.patch
new file mode 100644
index 0000000000..ed76e9ed07
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0362-media-i2c-ov9281-add-enum_frame_interval-function-fo.patch
@@ -0,0 +1,97 @@
+From a0b461a669b2e106a8b22dc3e9bd1666128d69a4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 14 Apr 2020 15:51:50 +0100
+Subject: [PATCH] media: i2c: ov9281: add enum_frame_interval function
+ for iq tool 2.2 and hal3
+
+Adds the ov9281 parts of the Rockchip patch adding enum_frame_interval to
+a large number of drivers.
+
+Change-Id: I03344cd6cf278dd7c18fce8e97479089ef185a5c
+Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
+---
+ drivers/media/i2c/ov9281.c | 31 ++++++++++++++++++++++++++-----
+ 1 file changed, 26 insertions(+), 5 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -4,6 +4,7 @@
+  *
+  * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
+  * V0.0X01.0X02 fix mclk issue when probe multiple camera.
++ * V0.0X01.0X03 add enum_frame_interval function.
+  */
+ 
+ #include <linux/clk.h>
+@@ -23,7 +24,7 @@
+ #include <media/v4l2-subdev.h>
+ #include <linux/pinctrl/consumer.h>
+ 
+-#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x2)
++#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x3)
+ 
+ #ifndef V4L2_CID_DIGITAL_GAIN
+ #define V4L2_CID_DIGITAL_GAIN		V4L2_CID_GAIN
+@@ -92,7 +93,7 @@ struct regval {
+ struct ov9281_mode {
+ 	u32 width;
+ 	u32 height;
+-	u32 max_fps;
++	struct v4l2_fract max_fps;
+ 	u32 hts_def;
+ 	u32 vts_def;
+ 	u32 exp_def;
+@@ -246,7 +247,10 @@ static const struct ov9281_mode supporte
+ 	{
+ 		.width = 1280,
+ 		.height = 800,
+-		.max_fps = 120,
++		.max_fps = {
++			.numerator = 10000,
++			.denominator = 1200000,
++		},
+ 		.exp_def = 0x0320,
+ 		.hts_def = 0x0b60,//0x2d8*4
+ 		.vts_def = 0x038e,
+@@ -483,8 +487,7 @@ static int OV9281_g_frame_interval(struc
+ 	const struct ov9281_mode *mode = ov9281->cur_mode;
+ 
+ 	mutex_lock(&ov9281->mutex);
+-	fi->interval.numerator = 10000;
+-	fi->interval.denominator = mode->max_fps * 10000;
++	fi->interval = mode->max_fps;
+ 	mutex_unlock(&ov9281->mutex);
+ 
+ 	return 0;
+@@ -778,6 +781,23 @@ static int ov9281_open(struct v4l2_subde
+ }
+ #endif
+ 
++static int
++ov9281_enum_frame_interval(struct v4l2_subdev *sd,
++			   struct v4l2_subdev_pad_config *cfg,
++			   struct v4l2_subdev_frame_interval_enum *fie)
++{
++	if (fie->index >= ARRAY_SIZE(supported_modes))
++		return -EINVAL;
++
++	if (fie->code != MEDIA_BUS_FMT_Y10_1X10)
++		return -EINVAL;
++
++	fie->width = supported_modes[fie->index].width;
++	fie->height = supported_modes[fie->index].height;
++	fie->interval = supported_modes[fie->index].max_fps;
++	return 0;
++}
++
+ static const struct dev_pm_ops ov9281_pm_ops = {
+ 	SET_RUNTIME_PM_OPS(ov9281_runtime_suspend,
+ 			   ov9281_runtime_resume, NULL)
+@@ -805,6 +825,7 @@ static const struct v4l2_subdev_video_op
+ static const struct v4l2_subdev_pad_ops ov9281_pad_ops = {
+ 	.enum_mbus_code = ov9281_enum_mbus_code,
+ 	.enum_frame_size = ov9281_enum_frame_sizes,
++	.enum_frame_interval = ov9281_enum_frame_interval,
+ 	.get_fmt = ov9281_get_fmt,
+ 	.set_fmt = ov9281_set_fmt,
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0363-media-i2c-ov9281-Fixup-for-recent-kernel-releases-an.patch b/target/linux/bcm27xx/patches-5.15/950-0363-media-i2c-ov9281-Fixup-for-recent-kernel-releases-an.patch
new file mode 100644
index 0000000000..ab9683d1ee
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0363-media-i2c-ov9281-Fixup-for-recent-kernel-releases-an.patch
@@ -0,0 +1,681 @@
+From 39d7bf57e12edfb28cbc8a329d546fe8a6a396ef Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 14 Apr 2020 16:12:33 +0100
+Subject: [PATCH] media: i2c: ov9281: Fixup for recent kernel releases,
+ and remove custom code
+
+The Rockchip driver was based on a 4.4 kernel, and had several custom
+Rockchip parts.
+
+Update to 5.4 kernel APIs, with the relevant controls required by
+libcamera, and remove custom Rockchip parts.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 361 +++++++++++++------------------------
+ 1 file changed, 122 insertions(+), 239 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -1,6 +1,11 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+- * ov9281 driver
++ * Omnivision OV9281 1280x800 global shutter image sensor driver
++ *
++ * This driver has been taken from
++ * https://github.com/rockchip-linux/kernel/blob/develop-4.4/drivers/media/i2c/ov9281.c
++ * cleaned up, made to compile against mainline kernels instead of the Rockchip
++ * vendor kernel, and the relevant controls added to work with libcamera.
+  *
+  * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
+  * V0.0X01.0X02 fix mclk issue when probe multiple camera.
+@@ -17,22 +22,18 @@
+ #include <linux/regulator/consumer.h>
+ #include <linux/sysfs.h>
+ #include <linux/slab.h>
+-#include <linux/rk-camera-module.h>
+ #include <media/media-entity.h>
+ #include <media/v4l2-async.h>
+ #include <media/v4l2-ctrls.h>
+ #include <media/v4l2-subdev.h>
+-#include <linux/pinctrl/consumer.h>
+-
+-#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x3)
+-
+-#ifndef V4L2_CID_DIGITAL_GAIN
+-#define V4L2_CID_DIGITAL_GAIN		V4L2_CID_GAIN
+-#endif
+ 
+ #define OV9281_LINK_FREQ_400MHZ		400000000
++#define OV9281_LANES			2
++#define OV9281_BITS_PER_SAMPLE		10
++
+ /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
+-#define OV9281_PIXEL_RATE		(OV9281_LINK_FREQ_400MHZ * 2 * 2 / 10)
++#define OV9281_PIXEL_RATE		(OV9281_LINK_FREQ_400MHZ * 2 * \
++					 OV9281_LANES / OV9281_BITS_PER_SAMPLE)
+ #define OV9281_XVCLK_FREQ		24000000
+ 
+ #define CHIP_ID				0x9281
+@@ -63,18 +64,24 @@
+ 
+ #define OV9281_REG_VTS			0x380e
+ 
++/*
++ * OV9281 native and active pixel array size.
++ * Datasheet not available to confirm these values, so assume there are no
++ * border pixels.
++ */
++#define OV9281_NATIVE_WIDTH		1280U
++#define OV9281_NATIVE_HEIGHT		800U
++#define OV9281_PIXEL_ARRAY_LEFT		0U
++#define OV9281_PIXEL_ARRAY_TOP		0U
++#define OV9281_PIXEL_ARRAY_WIDTH	1280U
++#define OV9281_PIXEL_ARRAY_HEIGHT	800U
++
+ #define REG_NULL			0xFFFF
+ 
+ #define OV9281_REG_VALUE_08BIT		1
+ #define OV9281_REG_VALUE_16BIT		2
+ #define OV9281_REG_VALUE_24BIT		3
+ 
+-#define OV9281_LANES			2
+-#define OV9281_BITS_PER_SAMPLE		10
+-
+-#define OF_CAMERA_PINCTRL_STATE_DEFAULT	"rockchip,camera_default"
+-#define OF_CAMERA_PINCTRL_STATE_SLEEP	"rockchip,camera_sleep"
+-
+ #define OV9281_NAME			"ov9281"
+ 
+ static const char * const ov9281_supply_names[] = {
+@@ -93,10 +100,10 @@ struct regval {
+ struct ov9281_mode {
+ 	u32 width;
+ 	u32 height;
+-	struct v4l2_fract max_fps;
+ 	u32 hts_def;
+ 	u32 vts_def;
+ 	u32 exp_def;
++	struct v4l2_rect crop;
+ 	const struct regval *reg_list;
+ };
+ 
+@@ -107,10 +114,6 @@ struct ov9281 {
+ 	struct gpio_desc	*pwdn_gpio;
+ 	struct regulator_bulk_data supplies[OV9281_NUM_SUPPLIES];
+ 
+-	struct pinctrl		*pinctrl;
+-	struct pinctrl_state	*pins_default;
+-	struct pinctrl_state	*pins_sleep;
+-
+ 	struct v4l2_subdev	subdev;
+ 	struct media_pad	pad;
+ 	struct v4l2_ctrl_handler ctrl_handler;
+@@ -124,23 +127,12 @@ struct ov9281 {
+ 	bool			streaming;
+ 	bool			power_on;
+ 	const struct ov9281_mode *cur_mode;
+-	u32			module_index;
+-	const char		*module_facing;
+-	const char		*module_name;
+-	const char		*len_name;
+ };
+ 
+ #define to_ov9281(sd) container_of(sd, struct ov9281, subdev)
+ 
+ /*
+  * Xclk 24Mhz
+- */
+-static const struct regval ov9281_global_regs[] = {
+-	{REG_NULL, 0x00},
+-};
+-
+-/*
+- * Xclk 24Mhz
+  * max_framerate 120fps
+  * mipi_datarate per lane 800Mbps
+  */
+@@ -247,13 +239,15 @@ static const struct ov9281_mode supporte
+ 	{
+ 		.width = 1280,
+ 		.height = 800,
+-		.max_fps = {
+-			.numerator = 10000,
+-			.denominator = 1200000,
+-		},
+ 		.exp_def = 0x0320,
+-		.hts_def = 0x0b60,//0x2d8*4
++		.hts_def = 0x05b0,	/* 0x2d8*2 */
+ 		.vts_def = 0x038e,
++		.crop = {
++			.left = 0,
++			.top = 0,
++			.width = 1280,
++			.height = 800
++		},
+ 		.reg_list = ov9281_1280x800_regs,
+ 	},
+ };
+@@ -389,22 +383,28 @@ static int ov9281_set_fmt(struct v4l2_su
+ 	fmt->format.width = mode->width;
+ 	fmt->format.height = mode->height;
+ 	fmt->format.field = V4L2_FIELD_NONE;
++	fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->format.ycbcr_enc =
++			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
++	fmt->format.quantization =
++		V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->format.colorspace,
++					      fmt->format.ycbcr_enc);
++	fmt->format.xfer_func =
++		V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
++
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ 		*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
+-#else
+-		mutex_unlock(&ov9281->mutex);
+-		return -ENOTTY;
+-#endif
+ 	} else {
+ 		ov9281->cur_mode = mode;
+ 		h_blank = mode->hts_def - mode->width;
+ 		__v4l2_ctrl_modify_range(ov9281->hblank, h_blank,
+ 					 h_blank, 1, h_blank);
++		__v4l2_ctrl_s_ctrl(ov9281->hblank, h_blank);
+ 		vblank_def = mode->vts_def - mode->height;
+ 		__v4l2_ctrl_modify_range(ov9281->vblank, vblank_def,
+ 					 OV9281_VTS_MAX - mode->height,
+ 					 1, vblank_def);
++		__v4l2_ctrl_s_ctrl(ov9281->vblank, vblank_def);
+ 	}
+ 
+ 	mutex_unlock(&ov9281->mutex);
+@@ -421,17 +421,21 @@ static int ov9281_get_fmt(struct v4l2_su
+ 
+ 	mutex_lock(&ov9281->mutex);
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ 		fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
+-#else
+-		mutex_unlock(&ov9281->mutex);
+-		return -ENOTTY;
+-#endif
+ 	} else {
+ 		fmt->format.width = mode->width;
+ 		fmt->format.height = mode->height;
+ 		fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
+ 		fmt->format.field = V4L2_FIELD_NONE;
++		fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
++		fmt->format.ycbcr_enc =
++			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
++		fmt->format.quantization =
++			V4L2_MAP_QUANTIZATION_DEFAULT(true,
++						      fmt->format.colorspace,
++						      fmt->format.ycbcr_enc);
++		fmt->format.xfer_func =
++			V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
+ 	}
+ 	mutex_unlock(&ov9281->mutex);
+ 
+@@ -442,7 +446,7 @@ static int ov9281_enum_mbus_code(struct
+ 				 struct v4l2_subdev_pad_config *cfg,
+ 				 struct v4l2_subdev_mbus_code_enum *code)
+ {
+-	if (code->index != 0)
++	if (code->index)
+ 		return -EINVAL;
+ 	code->code = MEDIA_BUS_FMT_Y10_1X10;
+ 
+@@ -480,88 +484,56 @@ static int ov9281_enable_test_pattern(st
+ 				OV9281_REG_VALUE_08BIT, val);
+ }
+ 
+-static int OV9281_g_frame_interval(struct v4l2_subdev *sd,
+-				   struct v4l2_subdev_frame_interval *fi)
+-{
+-	struct ov9281 *ov9281 = to_ov9281(sd);
+-	const struct ov9281_mode *mode = ov9281->cur_mode;
+-
+-	mutex_lock(&ov9281->mutex);
+-	fi->interval = mode->max_fps;
+-	mutex_unlock(&ov9281->mutex);
++static const struct v4l2_rect *
++__ov9281_get_pad_crop(struct ov9281 *ov9281, struct v4l2_subdev_pad_config *cfg,
++		      unsigned int pad, enum v4l2_subdev_format_whence which)
++{
++	switch (which) {
++	case V4L2_SUBDEV_FORMAT_TRY:
++		return v4l2_subdev_get_try_crop(&ov9281->subdev, cfg, pad);
++	case V4L2_SUBDEV_FORMAT_ACTIVE:
++		return &ov9281->cur_mode->crop;
++	}
+ 
+-	return 0;
++	return NULL;
+ }
+ 
+-static void ov9281_get_module_inf(struct ov9281 *ov9281,
+-				  struct rkmodule_inf *inf)
++static int ov9281_get_selection(struct v4l2_subdev *sd,
++				struct v4l2_subdev_pad_config *cfg,
++				struct v4l2_subdev_selection *sel)
+ {
+-	memset(inf, 0, sizeof(*inf));
+-	strlcpy(inf->base.sensor, OV9281_NAME, sizeof(inf->base.sensor));
+-	strlcpy(inf->base.module, ov9281->module_name,
+-		sizeof(inf->base.module));
+-	strlcpy(inf->base.lens, ov9281->len_name, sizeof(inf->base.lens));
+-}
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP: {
++		struct ov9281 *ov9281 = to_ov9281(sd);
+ 
+-static long ov9281_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+-{
+-	struct ov9281 *ov9281 = to_ov9281(sd);
+-	long ret = 0;
++		mutex_lock(&ov9281->mutex);
++		sel->r = *__ov9281_get_pad_crop(ov9281, cfg, sel->pad,
++						sel->which);
++		mutex_unlock(&ov9281->mutex);
+ 
+-	switch (cmd) {
+-	case RKMODULE_GET_MODULE_INFO:
+-		ov9281_get_module_inf(ov9281, (struct rkmodule_inf *)arg);
+-		break;
+-	default:
+-		ret = -ENOIOCTLCMD;
+-		break;
++		return 0;
+ 	}
+ 
+-	return ret;
+-}
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++		sel->r.top = 0;
++		sel->r.left = 0;
++		sel->r.width = OV9281_NATIVE_WIDTH;
++		sel->r.height = OV9281_NATIVE_HEIGHT;
+ 
+-#ifdef CONFIG_COMPAT
+-static long ov9281_compat_ioctl32(struct v4l2_subdev *sd,
+-				  unsigned int cmd, unsigned long arg)
+-{
+-	void __user *up = compat_ptr(arg);
+-	struct rkmodule_inf *inf;
+-	struct rkmodule_awb_cfg *cfg;
+-	long ret;
+-
+-	switch (cmd) {
+-	case RKMODULE_GET_MODULE_INFO:
+-		inf = kzalloc(sizeof(*inf), GFP_KERNEL);
+-		if (!inf) {
+-			ret = -ENOMEM;
+-			return ret;
+-		}
++		return 0;
+ 
+-		ret = ov9281_ioctl(sd, cmd, inf);
+-		if (!ret)
+-			ret = copy_to_user(up, inf, sizeof(*inf));
+-		kfree(inf);
+-		break;
+-	case RKMODULE_AWB_CFG:
+-		cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
+-		if (!cfg) {
+-			ret = -ENOMEM;
+-			return ret;
+-		}
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		sel->r.top = OV9281_PIXEL_ARRAY_TOP;
++		sel->r.left = OV9281_PIXEL_ARRAY_LEFT;
++		sel->r.width = OV9281_PIXEL_ARRAY_WIDTH;
++		sel->r.height = OV9281_PIXEL_ARRAY_HEIGHT;
+ 
+-		ret = copy_from_user(cfg, up, sizeof(*cfg));
+-		if (!ret)
+-			ret = ov9281_ioctl(sd, cmd, cfg);
+-		kfree(cfg);
+-		break;
+-	default:
+-		ret = -ENOIOCTLCMD;
+-		break;
++		return 0;
+ 	}
+ 
+-	return ret;
++	return -EINVAL;
+ }
+-#endif
+ 
+ static int __ov9281_start_stream(struct ov9281 *ov9281)
+ {
+@@ -643,12 +615,6 @@ static int ov9281_s_power(struct v4l2_su
+ 			pm_runtime_put_noidle(&client->dev);
+ 			goto unlock_and_return;
+ 		}
+-		ret = ov9281_write_array(ov9281->client, ov9281_global_regs);
+-		if (ret) {
+-			v4l2_err(sd, "could not set init registers\n");
+-			pm_runtime_put_noidle(&client->dev);
+-			goto unlock_and_return;
+-		}
+ 		ov9281->power_on = true;
+ 	} else {
+ 		pm_runtime_put(&client->dev);
+@@ -673,18 +639,12 @@ static int __ov9281_power_on(struct ov92
+ 	u32 delay_us;
+ 	struct device *dev = &ov9281->client->dev;
+ 
+-	if (!IS_ERR_OR_NULL(ov9281->pins_default)) {
+-		ret = pinctrl_select_state(ov9281->pinctrl,
+-					   ov9281->pins_default);
+-		if (ret < 0)
+-			dev_err(dev, "could not set pins\n");
+-	}
+-
+ 	ret = clk_set_rate(ov9281->xvclk, OV9281_XVCLK_FREQ);
+ 	if (ret < 0)
+ 		dev_warn(dev, "Failed to set xvclk rate (24MHz)\n");
+ 	if (clk_get_rate(ov9281->xvclk) != OV9281_XVCLK_FREQ)
+-		dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
++		dev_warn(dev, "xvclk mismatched, modes are based on 24MHz - rate is %lu\n",
++			 clk_get_rate(ov9281->xvclk));
+ 
+ 	ret = clk_prepare_enable(ov9281->xvclk);
+ 	if (ret < 0) {
+@@ -722,20 +682,11 @@ disable_clk:
+ 
+ static void __ov9281_power_off(struct ov9281 *ov9281)
+ {
+-	int ret;
+-	struct device *dev = &ov9281->client->dev;
+-
+ 	if (!IS_ERR(ov9281->pwdn_gpio))
+ 		gpiod_set_value_cansleep(ov9281->pwdn_gpio, 0);
+ 	clk_disable_unprepare(ov9281->xvclk);
+ 	if (!IS_ERR(ov9281->reset_gpio))
+ 		gpiod_set_value_cansleep(ov9281->reset_gpio, 0);
+-	if (!IS_ERR_OR_NULL(ov9281->pins_sleep)) {
+-		ret = pinctrl_select_state(ov9281->pinctrl,
+-					   ov9281->pins_sleep);
+-		if (ret < 0)
+-			dev_dbg(dev, "could not set pins\n");
+-	}
+ 	regulator_bulk_disable(OV9281_NUM_SUPPLIES, ov9281->supplies);
+ }
+ 
+@@ -759,7 +710,6 @@ static int ov9281_runtime_suspend(struct
+ 	return 0;
+ }
+ 
+-#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ static int ov9281_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+ {
+ 	struct ov9281 *ov9281 = to_ov9281(sd);
+@@ -773,61 +723,42 @@ static int ov9281_open(struct v4l2_subde
+ 	try_fmt->height = def_mode->height;
+ 	try_fmt->code = MEDIA_BUS_FMT_Y10_1X10;
+ 	try_fmt->field = V4L2_FIELD_NONE;
++	try_fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	try_fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(try_fmt->colorspace);
++	try_fmt->quantization =
++		V4L2_MAP_QUANTIZATION_DEFAULT(true, try_fmt->colorspace,
++					      try_fmt->ycbcr_enc);
++	try_fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(try_fmt->colorspace);
+ 
+ 	mutex_unlock(&ov9281->mutex);
+ 	/* No crop or compose */
+ 
+ 	return 0;
+ }
+-#endif
+-
+-static int
+-ov9281_enum_frame_interval(struct v4l2_subdev *sd,
+-			   struct v4l2_subdev_pad_config *cfg,
+-			   struct v4l2_subdev_frame_interval_enum *fie)
+-{
+-	if (fie->index >= ARRAY_SIZE(supported_modes))
+-		return -EINVAL;
+-
+-	if (fie->code != MEDIA_BUS_FMT_Y10_1X10)
+-		return -EINVAL;
+-
+-	fie->width = supported_modes[fie->index].width;
+-	fie->height = supported_modes[fie->index].height;
+-	fie->interval = supported_modes[fie->index].max_fps;
+-	return 0;
+-}
+ 
+ static const struct dev_pm_ops ov9281_pm_ops = {
+ 	SET_RUNTIME_PM_OPS(ov9281_runtime_suspend,
+ 			   ov9281_runtime_resume, NULL)
+ };
+ 
+-#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ static const struct v4l2_subdev_internal_ops ov9281_internal_ops = {
+ 	.open = ov9281_open,
+ };
+-#endif
+ 
+ static const struct v4l2_subdev_core_ops ov9281_core_ops = {
+ 	.s_power = ov9281_s_power,
+-	.ioctl = ov9281_ioctl,
+-#ifdef CONFIG_COMPAT
+-	.compat_ioctl32 = ov9281_compat_ioctl32,
+-#endif
+ };
+ 
+ static const struct v4l2_subdev_video_ops ov9281_video_ops = {
+ 	.s_stream = ov9281_s_stream,
+-	.g_frame_interval = OV9281_g_frame_interval,
+ };
+ 
+ static const struct v4l2_subdev_pad_ops ov9281_pad_ops = {
+ 	.enum_mbus_code = ov9281_enum_mbus_code,
+ 	.enum_frame_size = ov9281_enum_frame_sizes,
+-	.enum_frame_interval = ov9281_enum_frame_interval,
+ 	.get_fmt = ov9281_get_fmt,
+ 	.set_fmt = ov9281_set_fmt,
++	.get_selection = ov9281_get_selection,
+ };
+ 
+ static const struct v4l2_subdev_ops ov9281_subdev_ops = {
+@@ -868,7 +799,8 @@ static int ov9281_set_ctrl(struct v4l2_c
+ 	case V4L2_CID_ANALOGUE_GAIN:
+ 		ret = ov9281_write_reg(ov9281->client, OV9281_REG_GAIN_H,
+ 				       OV9281_REG_VALUE_08BIT,
+-				       (ctrl->val >> OV9281_GAIN_H_SHIFT) & OV9281_GAIN_H_MASK);
++				       (ctrl->val >> OV9281_GAIN_H_SHIFT) &
++							OV9281_GAIN_H_MASK);
+ 		ret |= ov9281_write_reg(ov9281->client, OV9281_REG_GAIN_L,
+ 				       OV9281_REG_VALUE_08BIT,
+ 				       ctrl->val & OV9281_GAIN_L_MASK);
+@@ -922,31 +854,34 @@ static int ov9281_initialize_controls(st
+ 
+ 	h_blank = mode->hts_def - mode->width;
+ 	ov9281->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
+-				h_blank, h_blank, 1, h_blank);
++					   h_blank, h_blank, 1, h_blank);
+ 	if (ov9281->hblank)
+ 		ov9281->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
+ 	vblank_def = mode->vts_def - mode->height;
+ 	ov9281->vblank = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
+-				V4L2_CID_VBLANK, vblank_def,
+-				OV9281_VTS_MAX - mode->height,
+-				1, vblank_def);
++					   V4L2_CID_VBLANK, vblank_def,
++					   OV9281_VTS_MAX - mode->height, 1,
++					   vblank_def);
+ 
+ 	exposure_max = mode->vts_def - 4;
+ 	ov9281->exposure = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
+-				V4L2_CID_EXPOSURE, OV9281_EXPOSURE_MIN,
+-				exposure_max, OV9281_EXPOSURE_STEP,
+-				mode->exp_def);
++					     V4L2_CID_EXPOSURE,
++					     OV9281_EXPOSURE_MIN, exposure_max,
++					     OV9281_EXPOSURE_STEP,
++					     mode->exp_def);
+ 
+ 	ov9281->anal_gain = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
+-				V4L2_CID_ANALOGUE_GAIN, OV9281_GAIN_MIN,
+-				OV9281_GAIN_MAX, OV9281_GAIN_STEP,
+-				OV9281_GAIN_DEFAULT);
+-
+-	ov9281->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
+-				&ov9281_ctrl_ops, V4L2_CID_TEST_PATTERN,
+-				ARRAY_SIZE(ov9281_test_pattern_menu) - 1,
+-				0, 0, ov9281_test_pattern_menu);
++					      V4L2_CID_ANALOGUE_GAIN,
++					      OV9281_GAIN_MIN, OV9281_GAIN_MAX,
++					      OV9281_GAIN_STEP,
++					      OV9281_GAIN_DEFAULT);
++
++	ov9281->test_pattern =
++		v4l2_ctrl_new_std_menu_items(handler, &ov9281_ctrl_ops,
++					     V4L2_CID_TEST_PATTERN,
++					     ARRAY_SIZE(ov9281_test_pattern_menu) - 1,
++					     0, 0, ov9281_test_pattern_menu);
+ 
+ 	if (handler->error) {
+ 		ret = handler->error;
+@@ -1000,34 +935,14 @@ static int ov9281_probe(struct i2c_clien
+ 			const struct i2c_device_id *id)
+ {
+ 	struct device *dev = &client->dev;
+-	struct device_node *node = dev->of_node;
+ 	struct ov9281 *ov9281;
+ 	struct v4l2_subdev *sd;
+-	char facing[2];
+ 	int ret;
+ 
+-	dev_info(dev, "driver version: %02x.%02x.%02x",
+-		DRIVER_VERSION >> 16,
+-		(DRIVER_VERSION & 0xff00) >> 8,
+-		DRIVER_VERSION & 0x00ff);
+-
+ 	ov9281 = devm_kzalloc(dev, sizeof(*ov9281), GFP_KERNEL);
+ 	if (!ov9281)
+ 		return -ENOMEM;
+ 
+-	ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
+-				   &ov9281->module_index);
+-	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
+-				       &ov9281->module_facing);
+-	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
+-				       &ov9281->module_name);
+-	ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
+-				       &ov9281->len_name);
+-	if (ret) {
+-		dev_err(dev, "could not get module information!\n");
+-		return -EINVAL;
+-	}
+-
+ 	ov9281->client = client;
+ 	ov9281->cur_mode = &supported_modes[0];
+ 
+@@ -1037,31 +952,15 @@ static int ov9281_probe(struct i2c_clien
+ 		return -EINVAL;
+ 	}
+ 
+-	ov9281->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
++	ov9281->reset_gpio = devm_gpiod_get_optional(dev, "reset",
++						     GPIOD_OUT_LOW);
+ 	if (IS_ERR(ov9281->reset_gpio))
+ 		dev_warn(dev, "Failed to get reset-gpios\n");
+ 
+-	ov9281->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
++	ov9281->pwdn_gpio = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_LOW);
+ 	if (IS_ERR(ov9281->pwdn_gpio))
+ 		dev_warn(dev, "Failed to get pwdn-gpios\n");
+ 
+-	ov9281->pinctrl = devm_pinctrl_get(dev);
+-	if (!IS_ERR(ov9281->pinctrl)) {
+-		ov9281->pins_default =
+-			pinctrl_lookup_state(ov9281->pinctrl,
+-					     OF_CAMERA_PINCTRL_STATE_DEFAULT);
+-		if (IS_ERR(ov9281->pins_default))
+-			dev_err(dev, "could not get default pinstate\n");
+-
+-		ov9281->pins_sleep =
+-			pinctrl_lookup_state(ov9281->pinctrl,
+-					     OF_CAMERA_PINCTRL_STATE_SLEEP);
+-		if (IS_ERR(ov9281->pins_sleep))
+-			dev_err(dev, "could not get sleep pinstate\n");
+-	} else {
+-		dev_err(dev, "no pinctrl\n");
+-	}
+-
+ 	ret = ov9281_configure_regulators(ov9281);
+ 	if (ret) {
+ 		dev_err(dev, "Failed to get power regulators\n");
+@@ -1084,26 +983,16 @@ static int ov9281_probe(struct i2c_clien
+ 	if (ret)
+ 		goto err_power_off;
+ 
+-#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ 	sd->internal_ops = &ov9281_internal_ops;
+ 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+-#endif
+-#if defined(CONFIG_MEDIA_CONTROLLER)
++
+ 	ov9281->pad.flags = MEDIA_PAD_FL_SOURCE;
+-	sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+-	ret = media_entity_init(&sd->entity, 1, &ov9281->pad, 0);
++	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
++	ret = media_entity_pads_init(&sd->entity, 1, &ov9281->pad);
+ 	if (ret < 0)
+ 		goto err_power_off;
+-#endif
+-
+-	memset(facing, 0, sizeof(facing));
+-	if (strcmp(ov9281->module_facing, "back") == 0)
+-		facing[0] = 'b';
+-	else
+-		facing[0] = 'f';
+ 
+-	snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
+-		 ov9281->module_index, facing,
++	snprintf(sd->name, sizeof(sd->name), "m%s %s",
+ 		 OV9281_NAME, dev_name(sd->dev));
+ 	ret = v4l2_async_register_subdev_sensor(sd);
+ 	if (ret) {
+@@ -1118,9 +1007,7 @@ static int ov9281_probe(struct i2c_clien
+ 	return 0;
+ 
+ err_clean_entity:
+-#if defined(CONFIG_MEDIA_CONTROLLER)
+ 	media_entity_cleanup(&sd->entity);
+-#endif
+ err_power_off:
+ 	__ov9281_power_off(ov9281);
+ err_free_handler:
+@@ -1137,9 +1024,7 @@ static int ov9281_remove(struct i2c_clie
+ 	struct ov9281 *ov9281 = to_ov9281(sd);
+ 
+ 	v4l2_async_unregister_subdev(sd);
+-#if defined(CONFIG_MEDIA_CONTROLLER)
+ 	media_entity_cleanup(&sd->entity);
+-#endif
+ 	v4l2_ctrl_handler_free(&ov9281->ctrl_handler);
+ 	mutex_destroy(&ov9281->mutex);
+ 
+@@ -1151,13 +1036,11 @@ static int ov9281_remove(struct i2c_clie
+ 	return 0;
+ }
+ 
+-#if IS_ENABLED(CONFIG_OF)
+ static const struct of_device_id ov9281_of_match[] = {
+ 	{ .compatible = "ovti,ov9281" },
+ 	{},
+ };
+ MODULE_DEVICE_TABLE(of, ov9281_of_match);
+-#endif
+ 
+ static const struct i2c_device_id ov9281_match_id[] = {
+ 	{ "ovti,ov9281", 0 },
diff --git a/target/linux/bcm27xx/patches-5.15/950-0364-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch b/target/linux/bcm27xx/patches-5.15/950-0364-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch
new file mode 100644
index 0000000000..2644c5659b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0364-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch
@@ -0,0 +1,42 @@
+From 18e32b190c3e58cba734073706d5ff0fcd7cbba3 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 6 Jul 2020 17:51:32 +0100
+Subject: [PATCH] media: i2c: ov9281: Read chip ID via 2 reads
+
+Vision Components have made an OV9281 module which blocks reading
+back the majority of registers to comply with NDAs, and in doing
+so doesn't allow auto-increment register reading as used when
+reading the chip ID.
+
+Use two reads and manually combine the results.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -904,13 +904,17 @@ static int ov9281_check_sensor_id(struct
+ 				  struct i2c_client *client)
+ {
+ 	struct device *dev = &ov9281->client->dev;
+-	u32 id = 0;
++	u32 id = 0, id_msb;
+ 	int ret;
+ 
+-	ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID,
+-			      OV9281_REG_VALUE_16BIT, &id);
+-	if (id != CHIP_ID) {
+-		dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret);
++	ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID + 1,
++			      OV9281_REG_VALUE_08BIT, &id);
++	if (!ret)
++		ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID,
++				      OV9281_REG_VALUE_08BIT, &id_msb);
++	id |= (id_msb << 8);
++	if (ret || id != CHIP_ID) {
++		dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", id, ret);
+ 		return -ENODEV;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0365-media-i2c-ov9281-Add-support-for-8-bit-readout.patch b/target/linux/bcm27xx/patches-5.15/950-0365-media-i2c-ov9281-Add-support-for-8-bit-readout.patch
new file mode 100644
index 0000000000..670e9567ff
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0365-media-i2c-ov9281-Add-support-for-8-bit-readout.patch
@@ -0,0 +1,188 @@
+From 86e3f6d35527608611176b6591bc6a80bfc0f7cf Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 7 Jul 2020 18:29:10 +0100
+Subject: [PATCH] media: i2c: ov9281: Add support for 8 bit readout
+
+The sensor supports 8 bit mode as well as 10bit, so add the
+relevant code to allow selection of this.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 66 ++++++++++++++++++++++++++++++--------
+ 1 file changed, 52 insertions(+), 14 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -29,11 +29,12 @@
+ 
+ #define OV9281_LINK_FREQ_400MHZ		400000000
+ #define OV9281_LANES			2
+-#define OV9281_BITS_PER_SAMPLE		10
+ 
+ /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
+-#define OV9281_PIXEL_RATE		(OV9281_LINK_FREQ_400MHZ * 2 * \
+-					 OV9281_LANES / OV9281_BITS_PER_SAMPLE)
++#define OV9281_PIXEL_RATE_10BIT		(OV9281_LINK_FREQ_400MHZ * 2 * \
++					 OV9281_LANES / 10)
++#define OV9281_PIXEL_RATE_8BIT		(OV9281_LINK_FREQ_400MHZ * 2 * \
++					 OV9281_LANES / 8)
+ #define OV9281_XVCLK_FREQ		24000000
+ 
+ #define CHIP_ID				0x9281
+@@ -122,24 +123,25 @@ struct ov9281 {
+ 	struct v4l2_ctrl	*digi_gain;
+ 	struct v4l2_ctrl	*hblank;
+ 	struct v4l2_ctrl	*vblank;
++	struct v4l2_ctrl	*pixel_rate;
+ 	struct v4l2_ctrl	*test_pattern;
+ 	struct mutex		mutex;
+ 	bool			streaming;
+ 	bool			power_on;
+ 	const struct ov9281_mode *cur_mode;
++	u32			code;
+ };
+ 
+ #define to_ov9281(sd) container_of(sd, struct ov9281, subdev)
+ 
+ /*
+  * Xclk 24Mhz
+- * max_framerate 120fps
++ * max_framerate 120fps for 10 bit, 144fps for 8 bit.
+  * mipi_datarate per lane 800Mbps
+  */
+ static const struct regval ov9281_1280x800_regs[] = {
+ 	{0x0103, 0x01},
+ 	{0x0302, 0x32},
+-	{0x030d, 0x50},
+ 	{0x030e, 0x02},
+ 	{0x3001, 0x00},
+ 	{0x3004, 0x00},
+@@ -168,7 +170,6 @@ static const struct regval ov9281_1280x8
+ 	{0x3620, 0x6f},
+ 	{0x3632, 0x56},
+ 	{0x3633, 0x78},
+-	{0x3662, 0x05},
+ 	{0x3666, 0x00},
+ 	{0x366f, 0x5a},
+ 	{0x3680, 0x84},
+@@ -235,6 +236,18 @@ static const struct regval ov9281_1280x8
+ 	{REG_NULL, 0x00},
+ };
+ 
++static const struct regval op_10bit[] = {
++	{0x030d, 0x50},
++	{0x3662, 0x05},
++	{REG_NULL, 0x00},
++};
++
++static const struct regval op_8bit[] = {
++	{0x030d, 0x60},
++	{0x3662, 0x07},
++	{REG_NULL, 0x00},
++};
++
+ static const struct ov9281_mode supported_modes[] = {
+ 	{
+ 		.width = 1280,
+@@ -374,12 +387,13 @@ static int ov9281_set_fmt(struct v4l2_su
+ {
+ 	struct ov9281 *ov9281 = to_ov9281(sd);
+ 	const struct ov9281_mode *mode;
+-	s64 h_blank, vblank_def;
++	s64 h_blank, vblank_def, pixel_rate;
+ 
+ 	mutex_lock(&ov9281->mutex);
+ 
+ 	mode = ov9281_find_best_fit(fmt);
+-	fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
++	if (fmt->format.code != MEDIA_BUS_FMT_Y8_1X8)
++		fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
+ 	fmt->format.width = mode->width;
+ 	fmt->format.height = mode->height;
+ 	fmt->format.field = V4L2_FIELD_NONE;
+@@ -396,6 +410,7 @@ static int ov9281_set_fmt(struct v4l2_su
+ 		*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
+ 	} else {
+ 		ov9281->cur_mode = mode;
++		ov9281->code = fmt->format.code;
+ 		h_blank = mode->hts_def - mode->width;
+ 		__v4l2_ctrl_modify_range(ov9281->hblank, h_blank,
+ 					 h_blank, 1, h_blank);
+@@ -405,6 +420,11 @@ static int ov9281_set_fmt(struct v4l2_su
+ 					 OV9281_VTS_MAX - mode->height,
+ 					 1, vblank_def);
+ 		__v4l2_ctrl_s_ctrl(ov9281->vblank, vblank_def);
++
++		pixel_rate = (fmt->format.code == MEDIA_BUS_FMT_Y10_1X10) ?
++			OV9281_PIXEL_RATE_10BIT : OV9281_PIXEL_RATE_8BIT;
++		__v4l2_ctrl_modify_range(ov9281->pixel_rate, pixel_rate,
++					 pixel_rate, 1, pixel_rate);
+ 	}
+ 
+ 	mutex_unlock(&ov9281->mutex);
+@@ -425,7 +445,7 @@ static int ov9281_get_fmt(struct v4l2_su
+ 	} else {
+ 		fmt->format.width = mode->width;
+ 		fmt->format.height = mode->height;
+-		fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
++		fmt->format.code = ov9281->code;
+ 		fmt->format.field = V4L2_FIELD_NONE;
+ 		fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
+ 		fmt->format.ycbcr_enc =
+@@ -446,9 +466,16 @@ static int ov9281_enum_mbus_code(struct
+ 				 struct v4l2_subdev_pad_config *cfg,
+ 				 struct v4l2_subdev_mbus_code_enum *code)
+ {
+-	if (code->index)
++	switch (code->index) {
++	default:
+ 		return -EINVAL;
+-	code->code = MEDIA_BUS_FMT_Y10_1X10;
++	case 0:
++		code->code = MEDIA_BUS_FMT_Y10_1X10;
++		break;
++	case 1:
++		code->code = MEDIA_BUS_FMT_Y8_1X8;
++		break;
++	}
+ 
+ 	return 0;
+ }
+@@ -460,7 +487,8 @@ static int ov9281_enum_frame_sizes(struc
+ 	if (fse->index >= ARRAY_SIZE(supported_modes))
+ 		return -EINVAL;
+ 
+-	if (fse->code != MEDIA_BUS_FMT_Y10_1X10)
++	if (fse->code != MEDIA_BUS_FMT_Y10_1X10 &&
++	    fse->code != MEDIA_BUS_FMT_Y8_1X8)
+ 		return -EINVAL;
+ 
+ 	fse->min_width  = supported_modes[fse->index].width;
+@@ -543,6 +571,13 @@ static int __ov9281_start_stream(struct
+ 	if (ret)
+ 		return ret;
+ 
++	if (ov9281->code == MEDIA_BUS_FMT_Y10_1X10)
++		ret = ov9281_write_array(ov9281->client, op_10bit);
++	else
++		ret = ov9281_write_array(ov9281->client, op_8bit);
++	if (ret)
++		return ret;
++
+ 	/* In case these controls are set before streaming */
+ 	mutex_unlock(&ov9281->mutex);
+ 	ret = v4l2_ctrl_handler_setup(&ov9281->ctrl_handler);
+@@ -849,8 +884,11 @@ static int ov9281_initialize_controls(st
+ 	if (ctrl)
+ 		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
+-	v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
+-			  0, OV9281_PIXEL_RATE, 1, OV9281_PIXEL_RATE);
++	ov9281->pixel_rate = v4l2_ctrl_new_std(handler, NULL,
++					       V4L2_CID_PIXEL_RATE,
++					       OV9281_PIXEL_RATE_10BIT,
++					       OV9281_PIXEL_RATE_10BIT, 1,
++					       OV9281_PIXEL_RATE_10BIT);
+ 
+ 	h_blank = mode->hts_def - mode->width;
+ 	ov9281->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0366-media-ov9281-Add-1280x720-and-640x480-modes.patch b/target/linux/bcm27xx/patches-5.15/950-0366-media-ov9281-Add-1280x720-and-640x480-modes.patch
new file mode 100644
index 0000000000..33efb12f66
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0366-media-ov9281-Add-1280x720-and-640x480-modes.patch
@@ -0,0 +1,209 @@
+From 22a869d373bc642562e55107028d19926a593984 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sun, 22 Nov 2020 11:01:08 +0000
+Subject: [PATCH] media: ov9281: Add 1280x720 and 640x480 modes
+
+Breaks out common register set and adds the different registers
+for 1280x720 (cropped) and 640x480 (skipped) modes
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 146 ++++++++++++++++++++++++++++++++-----
+ 1 file changed, 126 insertions(+), 20 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -139,7 +139,7 @@ struct ov9281 {
+  * max_framerate 120fps for 10 bit, 144fps for 8 bit.
+  * mipi_datarate per lane 800Mbps
+  */
+-static const struct regval ov9281_1280x800_regs[] = {
++static const struct regval ov9281_common_regs[] = {
+ 	{0x0103, 0x01},
+ 	{0x0302, 0x32},
+ 	{0x030e, 0x02},
+@@ -177,13 +177,35 @@ static const struct regval ov9281_1280x8
+ 	{0x372d, 0x22},
+ 	{0x3731, 0x80},
+ 	{0x3732, 0x30},
+-	{0x3778, 0x00},
+ 	{0x377d, 0x22},
+ 	{0x3788, 0x02},
+ 	{0x3789, 0xa4},
+ 	{0x378a, 0x00},
+ 	{0x378b, 0x4a},
+ 	{0x3799, 0x20},
++	{0x3881, 0x42},
++	{0x38b1, 0x00},
++	{0x3920, 0xff},
++	{0x4010, 0x40},
++	{0x4043, 0x40},
++	{0x4307, 0x30},
++	{0x4317, 0x00},
++	{0x4501, 0x00},
++	{0x450a, 0x08},
++	{0x4601, 0x04},
++	{0x470f, 0x00},
++	{0x4f07, 0x00},
++	{0x4800, 0x00},
++	{0x5000, 0x9f},
++	{0x5001, 0x00},
++	{0x5e00, 0x00},
++	{0x5d00, 0x07},
++	{0x5d01, 0x00},
++	{REG_NULL, 0x00},
++};
++
++static const struct regval ov9281_1280x800_regs[] = {
++	{0x3778, 0x10},
+ 	{0x3800, 0x00},
+ 	{0x3801, 0x00},
+ 	{0x3802, 0x00},
+@@ -208,31 +230,83 @@ static const struct regval ov9281_1280x8
+ 	{0x3815, 0x11},
+ 	{0x3820, 0x40},
+ 	{0x3821, 0x00},
+-	{0x3881, 0x42},
+-	{0x38b1, 0x00},
+-	{0x3920, 0xff},
+ 	{0x4003, 0x40},
+ 	{0x4008, 0x04},
+ 	{0x4009, 0x0b},
+ 	{0x400c, 0x00},
+ 	{0x400d, 0x07},
+-	{0x4010, 0x40},
+-	{0x4043, 0x40},
+-	{0x4307, 0x30},
+-	{0x4317, 0x00},
+-	{0x4501, 0x00},
+ 	{0x4507, 0x00},
+ 	{0x4509, 0x00},
+-	{0x450a, 0x08},
+-	{0x4601, 0x04},
+-	{0x470f, 0x00},
+-	{0x4f07, 0x00},
+-	{0x4800, 0x00},
+-	{0x5000, 0x9f},
+-	{0x5001, 0x00},
+-	{0x5e00, 0x00},
+-	{0x5d00, 0x07},
+-	{0x5d01, 0x00},
++	{REG_NULL, 0x00},
++};
++
++static const struct regval ov9281_1280x720_regs[] = {
++	{0x3778, 0x10},
++	{0x3800, 0x00},
++	{0x3801, 0x00},
++	{0x3802, 0x00},
++	{0x3803, 0x28},
++	{0x3804, 0x05},
++	{0x3805, 0x0f},
++	{0x3806, 0x03},
++	{0x3807, 0x07},
++	{0x3808, 0x05},
++	{0x3809, 0x00},
++	{0x380a, 0x02},
++	{0x380b, 0xd0},
++	{0x380c, 0x02},
++	{0x380d, 0xd8},
++	{0x380e, 0x03},
++	{0x380f, 0x8e},
++	{0x3810, 0x00},
++	{0x3811, 0x08},
++	{0x3812, 0x00},
++	{0x3813, 0x08},
++	{0x3814, 0x11},
++	{0x3815, 0x11},
++	{0x3820, 0x40},
++	{0x3821, 0x00},
++	{0x4003, 0x40},
++	{0x4008, 0x04},
++	{0x4009, 0x0b},
++	{0x400c, 0x00},
++	{0x400d, 0x07},
++	{0x4507, 0x00},
++	{0x4509, 0x00},
++	{REG_NULL, 0x00},
++};
++
++static const struct regval ov9281_640x400_regs[] = {
++	{0x3800, 0x00},
++	{0x3801, 0x00},
++	{0x3802, 0x00},
++	{0x3803, 0x00},
++	{0x3804, 0x05},
++	{0x3805, 0x0f},
++	{0x3806, 0x03},
++	{0x3807, 0x2f},
++	{0x3808, 0x02},
++	{0x3809, 0x80},
++	{0x380a, 0x01},
++	{0x380b, 0x90},
++	{0x380c, 0x02},
++	{0x380d, 0xd8},
++	{0x380e, 0x02},
++	{0x380f, 0x08},
++	{0x3810, 0x00},
++	{0x3811, 0x04},
++	{0x3812, 0x00},
++	{0x3813, 0x04},
++	{0x3814, 0x31},
++	{0x3815, 0x22},
++	{0x3820, 0x60},
++	{0x3821, 0x01},
++	{0x4008, 0x02},
++	{0x4009, 0x05},
++	{0x400c, 0x00},
++	{0x400d, 0x03},
++	{0x4507, 0x03},
++	{0x4509, 0x80},
+ 	{REG_NULL, 0x00},
+ };
+ 
+@@ -263,6 +337,34 @@ static const struct ov9281_mode supporte
+ 		},
+ 		.reg_list = ov9281_1280x800_regs,
+ 	},
++	{
++		.width = 1280,
++		.height = 720,
++		.exp_def = 0x0320,
++		.hts_def = 0x05b0,
++		.vts_def = 761,
++		.crop = {
++			.left = 0,
++			.top = 40,
++			.width = 1280,
++			.height = 720
++		},
++		.reg_list = ov9281_1280x720_regs,
++	},
++	{
++		.width = 640,
++		.height = 400,
++		.exp_def = 0x0320,
++		.hts_def = 0x05b0,
++		.vts_def = 421,
++		.crop = {
++			.left = 0,
++			.top = 0,
++			.width = 1280,
++			.height = 800
++		},
++		.reg_list = ov9281_640x400_regs,
++	},
+ };
+ 
+ static const s64 link_freq_menu_items[] = {
+@@ -567,6 +669,10 @@ static int __ov9281_start_stream(struct
+ {
+ 	int ret;
+ 
++	ret = ov9281_write_array(ov9281->client, ov9281_common_regs);
++	if (ret)
++		return ret;
++
+ 	ret = ov9281_write_array(ov9281->client, ov9281->cur_mode->reg_list);
+ 	if (ret)
+ 		return ret;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0367-Fixed-picture-line-bug-in-all-ov9281-modes.patch b/target/linux/bcm27xx/patches-5.15/950-0367-Fixed-picture-line-bug-in-all-ov9281-modes.patch
new file mode 100644
index 0000000000..c66fa6486c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0367-Fixed-picture-line-bug-in-all-ov9281-modes.patch
@@ -0,0 +1,38 @@
+From 3a2b3212618601346fbd042fa008a2200f09bda5 Mon Sep 17 00:00:00 2001
+From: Mathias Anhalt <mathiasanhalt@web.de>
+Date: Sun, 24 Jan 2021 15:15:01 +0100
+Subject: [PATCH] Fixed picture line bug in all ov9281 modes
+
+Signed-off-by: Mathias Anhalt <mathiasanhalt@web.de>
+---
+ drivers/media/i2c/ov9281.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -205,7 +205,7 @@ static const struct regval ov9281_common
+ };
+ 
+ static const struct regval ov9281_1280x800_regs[] = {
+-	{0x3778, 0x10},
++	{0x3778, 0x00},
+ 	{0x3800, 0x00},
+ 	{0x3801, 0x00},
+ 	{0x3802, 0x00},
+@@ -241,7 +241,7 @@ static const struct regval ov9281_1280x8
+ };
+ 
+ static const struct regval ov9281_1280x720_regs[] = {
+-	{0x3778, 0x10},
++	{0x3778, 0x00},
+ 	{0x3800, 0x00},
+ 	{0x3801, 0x00},
+ 	{0x3802, 0x00},
+@@ -277,6 +277,7 @@ static const struct regval ov9281_1280x7
+ };
+ 
+ static const struct regval ov9281_640x400_regs[] = {
++	{0x3778, 0x10},
+ 	{0x3800, 0x00},
+ 	{0x3801, 0x00},
+ 	{0x3802, 0x00},
diff --git a/target/linux/bcm27xx/patches-5.15/950-0368-Added-hflip-and-vflip-controls-to-ov9281.patch b/target/linux/bcm27xx/patches-5.15/950-0368-Added-hflip-and-vflip-controls-to-ov9281.patch
new file mode 100644
index 0000000000..9df252c106
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0368-Added-hflip-and-vflip-controls-to-ov9281.patch
@@ -0,0 +1,112 @@
+From 0eab0865261fd1da54330c59de9e0929e27ec330 Mon Sep 17 00:00:00 2001
+From: Mathias Anhalt <mathiasanhalt@web.de>
+Date: Wed, 3 Feb 2021 20:34:09 +0100
+Subject: [PATCH] Added hflip and vflip controls to ov9281
+
+Signed-off-by: Mathias Anhalt <mathiasanhalt@web.de>
+---
+ drivers/media/i2c/ov9281.c | 58 +++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 57 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -40,6 +40,10 @@
+ #define CHIP_ID				0x9281
+ #define OV9281_REG_CHIP_ID		0x300a
+ 
++#define OV9281_REG_TIMING_FORMAT_1		0x3820
++#define OV9281_REG_TIMING_FORMAT_2		0x3821
++#define OV9281_FLIP_BIT				BIT(2)
++
+ #define OV9281_REG_CTRL_MODE		0x0100
+ #define OV9281_MODE_SW_STANDBY		0x0
+ #define OV9281_MODE_STREAMING		BIT(0)
+@@ -123,6 +127,8 @@ struct ov9281 {
+ 	struct v4l2_ctrl	*digi_gain;
+ 	struct v4l2_ctrl	*hblank;
+ 	struct v4l2_ctrl	*vblank;
++	struct v4l2_ctrl	*hflip;
++	struct v4l2_ctrl	*vflip;
+ 	struct v4l2_ctrl	*pixel_rate;
+ 	struct v4l2_ctrl	*test_pattern;
+ 	struct mutex		mutex;
+@@ -615,6 +621,42 @@ static int ov9281_enable_test_pattern(st
+ 				OV9281_REG_VALUE_08BIT, val);
+ }
+ 
++static int ov9281_set_ctrl_hflip(struct ov9281 *ov9281, int value)
++{
++	u32 current_val;
++	int ret = ov9281_read_reg(ov9281->client, OV9281_REG_TIMING_FORMAT_2,
++					OV9281_REG_VALUE_08BIT, &current_val);
++	if (!ret) {
++		if (value)
++			current_val |= OV9281_FLIP_BIT;
++		else
++			current_val &= ~OV9281_FLIP_BIT;
++		return ov9281_write_reg(ov9281->client,
++						OV9281_REG_TIMING_FORMAT_2,
++						OV9281_REG_VALUE_08BIT,
++						current_val);
++	}
++	return ret;
++}
++
++static int ov9281_set_ctrl_vflip(struct ov9281 *ov9281, int value)
++{
++	u32 current_val;
++	int ret = ov9281_read_reg(ov9281->client, OV9281_REG_TIMING_FORMAT_1,
++					OV9281_REG_VALUE_08BIT, &current_val);
++	if (!ret) {
++		if (value)
++			current_val |= OV9281_FLIP_BIT;
++		else
++			current_val &= ~OV9281_FLIP_BIT;
++		return ov9281_write_reg(ov9281->client,
++						OV9281_REG_TIMING_FORMAT_1,
++						OV9281_REG_VALUE_08BIT,
++						current_val);
++	}
++	return ret;
++}
++
+ static const struct v4l2_rect *
+ __ov9281_get_pad_crop(struct ov9281 *ov9281, struct v4l2_subdev_pad_config *cfg,
+ 		      unsigned int pad, enum v4l2_subdev_format_whence which)
+@@ -933,6 +975,12 @@ static int ov9281_set_ctrl(struct v4l2_c
+ 		return 0;
+ 
+ 	switch (ctrl->id) {
++	case V4L2_CID_HFLIP:
++		ret = ov9281_set_ctrl_hflip(ov9281, ctrl->val);
++		break;
++	case V4L2_CID_VFLIP:
++		ret = ov9281_set_ctrl_vflip(ov9281, ctrl->val);
++		break;
+ 	case V4L2_CID_EXPOSURE:
+ 		/* 4 least significant bits of expsoure are fractional part */
+ 		ret = ov9281_write_reg(ov9281->client, OV9281_REG_EXPOSURE,
+@@ -981,7 +1029,7 @@ static int ov9281_initialize_controls(st
+ 
+ 	handler = &ov9281->ctrl_handler;
+ 	mode = ov9281->cur_mode;
+-	ret = v4l2_ctrl_handler_init(handler, 8);
++	ret = v4l2_ctrl_handler_init(handler, 9);
+ 	if (ret)
+ 		return ret;
+ 	handler->lock = &ov9281->mutex;
+@@ -1022,6 +1070,14 @@ static int ov9281_initialize_controls(st
+ 					      OV9281_GAIN_STEP,
+ 					      OV9281_GAIN_DEFAULT);
+ 
++	ov9281->vflip = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
++					  V4L2_CID_VFLIP,
++						0, 1, 1, 0);
++
++	ov9281->hflip = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
++					  V4L2_CID_HFLIP,
++						0, 1, 1, 0);
++
+ 	ov9281->test_pattern =
+ 		v4l2_ctrl_new_std_menu_items(handler, &ov9281_ctrl_ops,
+ 					     V4L2_CID_TEST_PATTERN,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0369-media-ov5647-Fix-return-codes-from-ov5647_write-ov56.patch b/target/linux/bcm27xx/patches-5.15/950-0369-media-ov5647-Fix-return-codes-from-ov5647_write-ov56.patch
new file mode 100644
index 0000000000..36044f37f2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0369-media-ov5647-Fix-return-codes-from-ov5647_write-ov56.patch
@@ -0,0 +1,89 @@
+From 4095981bf8a912e5e8f5d86ff305d974d506b091 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.org>
+Date: Wed, 15 Jan 2020 13:40:38 +0000
+Subject: [PATCH] media: ov5647: Fix return codes from
+ ov5647_write/ov5647_read functions.
+
+Previously they were returning positive non-zero codes for success,
+which were getting passed up the call stack. Since release 4.19,
+do_dentry_open (fs/open.c) has been catching these and flagging an
+error. (So this driver has been broken since that date.)
+
+Fixes: 3c2472a [media] media: i2c: Add support for OV5647 sensor
+Signed-off-by: David Plowman <david.plowman@raspberrypi.org>
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 38 ++++++++++++++++++++++++++++++++------
+ 1 file changed, 32 insertions(+), 6 deletions(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -587,7 +587,13 @@ static int ov5647_write16(struct v4l2_su
+ 	int ret;
+ 
+ 	ret = i2c_master_send(client, data, 4);
+-	if (ret < 0) {
++	/*
++	 * Writing the wrong number of bytes also needs to be flagged as an
++	 * error. Success needs to produce a 0 return code.
++	 */
++	if (ret == 4) {
++		ret = 0;
++	} else {
+ 		dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
+ 			__func__, reg);
+ 		return ret;
+@@ -603,10 +609,17 @@ static int ov5647_write(struct v4l2_subd
+ 	int ret;
+ 
+ 	ret = i2c_master_send(client, data, 3);
+-	if (ret < 0) {
++	/*
++	 * Writing the wrong number of bytes also needs to be flagged as an
++	 * error. Success needs to produce a 0 return code.
++	 */
++	if (ret == 3) {
++		ret = 0;
++	} else {
+ 		dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
+ 				__func__, reg);
+-		return ret;
++		if (ret >= 0)
++			ret = -EINVAL;
+ 	}
+ 
+ 	return 0;
+@@ -619,17 +632,30 @@ static int ov5647_read(struct v4l2_subde
+ 	int ret;
+ 
+ 	ret = i2c_master_send(client, data_w, 2);
+-	if (ret < 0) {
++	/*
++	 * A negative return code, or sending the wrong number of bytes, both
++	 * count as an error.
++	 */
++	if (ret != 2) {
+ 		dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
+ 			__func__, reg);
++		if (ret >= 0)
++			ret = -EINVAL;
+ 		return ret;
+ 	}
+ 
+ 	ret = i2c_master_recv(client, val, 1);
+-	if (ret < 0) {
++	/*
++	 * The only return value indicating success is 1. Anything else, even
++	 * a non-negative value, indicates something went wrong.
++	 */
++	if (ret == 1) {
++		ret = 0;
++	} else {
+ 		dev_dbg(&client->dev, "%s: i2c read error, reg: %x\n",
+ 				__func__, reg);
+-		return ret;
++		if (ret >= 0)
++			ret = -EINVAL;
+ 	}
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0370-media-i2c-ov5647-Parse-and-register-properties.patch b/target/linux/bcm27xx/patches-5.15/950-0370-media-i2c-ov5647-Parse-and-register-properties.patch
new file mode 100644
index 0000000000..40a7972dc6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0370-media-i2c-ov5647-Parse-and-register-properties.patch
@@ -0,0 +1,49 @@
+From c9ec0108b09b7222be4146d8fe543cf1def5cf69 Mon Sep 17 00:00:00 2001
+From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Date: Sat, 4 Jul 2020 01:45:08 +0300
+Subject: [PATCH] media: i2c: ov5647: Parse and register properties
+
+Parse device properties and register controls for them using the V4L2
+fwnode properties helpers.
+
+Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+---
+ drivers/media/i2c/ov5647.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -1291,10 +1291,11 @@ static const struct v4l2_ctrl_ops ov5647
+ 	.s_ctrl = ov5647_s_ctrl,
+ };
+ 
+-static int ov5647_init_controls(struct ov5647 *sensor)
++static int ov5647_init_controls(struct ov5647 *sensor, struct device *dev)
+ {
+ 	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
+ 	int hblank, exposure_max, exposure_def;
++	struct v4l2_fwnode_device_properties props;
+ 
+ 	v4l2_ctrl_handler_init(&sensor->ctrls, 8);
+ 
+@@ -1340,6 +1341,11 @@ static int ov5647_init_controls(struct o
+ 					   sensor->mode->vts -
+ 					   sensor->mode->format.height);
+ 
++	v4l2_fwnode_device_parse(dev, &props);
++
++	v4l2_ctrl_new_fwnode_properties(&sensor->ctrls, &ov5647_ctrl_ops,
++					&props);
++
+ 	if (sensor->ctrls.error)
+ 		goto handler_free;
+ 
+@@ -1426,7 +1432,7 @@ static int ov5647_probe(struct i2c_clien
+ 
+ 	sensor->mode = OV5647_DEFAULT_MODE;
+ 
+-	ret = ov5647_init_controls(sensor);
++	ret = ov5647_init_controls(sensor, dev);
+ 	if (ret)
+ 		goto mutex_destroy;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0371-clk-raspberrypi-Also-support-HEVC-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0371-clk-raspberrypi-Also-support-HEVC-clock.patch
new file mode 100644
index 0000000000..9ff67d830c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0371-clk-raspberrypi-Also-support-HEVC-clock.patch
@@ -0,0 +1,20 @@
+From a6823d1513a3cfd2acbacdf0a9d7d9e510618936 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Mon, 22 Feb 2021 18:47:19 +0000
+Subject: [PATCH] clk-raspberrypi: Also support HEVC clock
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -271,6 +271,7 @@ static int raspberrypi_discover_clocks(s
+ 		case RPI_FIRMWARE_CORE_CLK_ID:
+ 		case RPI_FIRMWARE_M2MC_CLK_ID:
+ 		case RPI_FIRMWARE_V3D_CLK_ID:
++		case RPI_FIRMWARE_HEVC_CLK_ID:
+ 		case RPI_FIRMWARE_PIXEL_BVB_CLK_ID:
+ 			hw = raspberrypi_clk_register(rpi, clks->parent,
+ 						      clks->id);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0372-rpivid-Request-maximum-hevc-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0372-rpivid-Request-maximum-hevc-clock.patch
new file mode 100644
index 0000000000..241b1e7383
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0372-rpivid-Request-maximum-hevc-clock.patch
@@ -0,0 +1,51 @@
+From 276aead8fe8654ba130f2bc866fd8aa7f236e507 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Mon, 22 Feb 2021 18:50:50 +0000
+Subject: [PATCH] rpivid: Request maximum hevc clock
+
+Query maximum and minimum clock from driver
+and use those
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/staging/media/rpivid/rpivid_video.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -490,6 +490,7 @@ static int rpivid_start_streaming(struct
+ {
+ 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
+ 	struct rpivid_dev *dev = ctx->dev;
++	long max_hevc_clock = clk_round_rate(dev->clock, ULONG_MAX);
+ 	int ret = 0;
+ 
+ 	if (ctx->src_fmt.pixelformat != V4L2_PIX_FMT_HEVC_SLICE)
+@@ -498,7 +499,7 @@ static int rpivid_start_streaming(struct
+ 	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->start)
+ 		ret = dev->dec_ops->start(ctx);
+ 
+-	ret = clk_set_rate(dev->clock, 500 * 1000 * 1000);
++	ret = clk_set_rate(dev->clock, max_hevc_clock);
+ 	if (ret) {
+ 		dev_err(dev->dev, "Failed to set clock rate\n");
+ 		goto out;
+@@ -519,12 +520,18 @@ static void rpivid_stop_streaming(struct
+ {
+ 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
+ 	struct rpivid_dev *dev = ctx->dev;
++	long min_hevc_clock = clk_round_rate(dev->clock, 0);
++	int ret;
+ 
+ 	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->stop)
+ 		dev->dec_ops->stop(ctx);
+ 
+ 	rpivid_queue_cleanup(vq, VB2_BUF_STATE_ERROR);
+ 
++	ret = clk_set_rate(dev->clock, min_hevc_clock);
++	if (ret)
++		dev_err(dev->dev, "Failed to set minimum clock rate\n");
++
+ 	clk_disable_unprepare(dev->clock);
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0373-staging-bcm2835-camera-Add-support-for-DMABUFs.patch b/target/linux/bcm27xx/patches-5.15/950-0373-staging-bcm2835-camera-Add-support-for-DMABUFs.patch
new file mode 100644
index 0000000000..1036be5baa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0373-staging-bcm2835-camera-Add-support-for-DMABUFs.patch
@@ -0,0 +1,37 @@
+From 7875476d9d797ed087399ec27e0b5db5b2c37162 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 17 Mar 2021 12:34:57 +0000
+Subject: [PATCH] staging/bcm2835-camera: Add support for DMABUFs
+
+DMABUFs are all handled by videobuf2, so there is no reason not
+to enable support for them.
+
+Note that this driver is still using the vmalloc allocator, so
+the buffers it allocates will not be compatible with the codec
+or ISP driver that require contiguous buffers. However this
+driver should be able to import the buffers allocated by them.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -1453,6 +1453,7 @@ static const struct v4l2_ioctl_ops camer
+ 	.vidioc_querybuf = vb2_ioctl_querybuf,
+ 	.vidioc_qbuf = vb2_ioctl_qbuf,
+ 	.vidioc_dqbuf = vb2_ioctl_dqbuf,
++	.vidioc_expbuf = vb2_ioctl_expbuf,
+ 	.vidioc_enum_framesizes = vidioc_enum_framesizes,
+ 	.vidioc_enum_frameintervals = vidioc_enum_frameintervals,
+ 	.vidioc_g_parm        = vidioc_g_parm,
+@@ -1934,7 +1935,7 @@ static int bcm2835_mmal_probe(struct pla
+ 		q = &dev->capture.vb_vidq;
+ 		memset(q, 0, sizeof(*q));
+ 		q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+-		q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
++		q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ | VB2_DMABUF;
+ 		q->drv_priv = dev;
+ 		q->buf_struct_size = sizeof(struct vb2_mmal_buffer);
+ 		q->ops = &bm2835_mmal_video_qops;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0374-staging-fbtft-Add-minipitft13-variant.patch b/target/linux/bcm27xx/patches-5.15/950-0374-staging-fbtft-Add-minipitft13-variant.patch
new file mode 100644
index 0000000000..ec3426f5c4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0374-staging-fbtft-Add-minipitft13-variant.patch
@@ -0,0 +1,104 @@
+From a033cf69a4592c8148bca72bef7c4c103316eb0a Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 19 Feb 2021 10:25:01 +0000
+Subject: [PATCH] staging: fbtft: Add minipitft13 variant
+
+The Adafruit Mini-PiTFT13 display needs offsets applying when rotated,
+so use the "variant" mechanism to select a custom set_addr_win method
+using a dedicated compatible string of "fbtft,minipitft13".
+
+See: https://github.com/raspberrypi/firmware/issues/1524
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/staging/fbtft/fb_st7789v.c | 44 +++++++++++++++++++++++++++++-
+ 1 file changed, 43 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/fbtft/fb_st7789v.c
++++ b/drivers/staging/fbtft/fb_st7789v.c
+@@ -75,6 +75,11 @@ enum st7789v_command {
+ 
+ static struct completion panel_te; /* completion for panel TE line */
+ static int irq_te; /* Linux IRQ for LCD TE line */
++static u32 col_offset = 0;
++static u32 row_offset = 0;
++static u8 col_hack_fix_offset = 0;
++static short x_offset = 0;
++static short y_offset = 0;
+ 
+ static irqreturn_t panel_te_handler(int irq, void *data)
+ {
+@@ -261,6 +266,22 @@ static int write_vmem(struct fbtft_par *
+ 	return ret;
+ }
+ 
++static void minipitft13_set_addr_win(struct fbtft_par *par, int xs, int ys,
++				     int xe, int ye)
++{
++	xs += x_offset;
++	xe += x_offset;
++	ys += y_offset;
++	ye += y_offset;
++	write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
++		  xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
++
++	write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS,
++		  ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
++
++	write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
++}
++
+ /**
+  * set_var() - apply LCD properties like rotation and BGR mode
+  *
+@@ -271,20 +292,32 @@ static int write_vmem(struct fbtft_par *
+ static int set_var(struct fbtft_par *par)
+ {
+ 	u8 madctl_par = 0;
++	struct fbtft_display *display = &par->pdata->display;
++	u32 width = display->width;
++	u32 height = display->height;
+ 
+ 	if (par->bgr)
+ 		madctl_par |= MADCTL_BGR;
+ 	switch (par->info->var.rotate) {
+ 	case 0:
++		x_offset = 0;
++		y_offset = 0;
+ 		break;
+ 	case 90:
+ 		madctl_par |= (MADCTL_MV | MADCTL_MY);
++		x_offset = (320 - height) - row_offset;
++		y_offset = (240 - width) - col_offset;
+ 		break;
+ 	case 180:
+ 		madctl_par |= (MADCTL_MX | MADCTL_MY);
++		x_offset = (240 - width) - col_offset + col_hack_fix_offset;
++		// hack tweak to account for extra pixel width to make even
++		y_offset = (320 - height) - row_offset;
+ 		break;
+ 	case 270:
+ 		madctl_par |= (MADCTL_MV | MADCTL_MX);
++		x_offset = row_offset;
++		y_offset = col_offset;
+ 		break;
+ 	default:
+ 		return -EINVAL;
+@@ -382,7 +415,16 @@ static struct fbtft_display display = {
+ 	},
+ };
+ 
+-FBTFT_REGISTER_DRIVER(DRVNAME, "sitronix,st7789v", &display);
++int variant_minipitft13(struct fbtft_display *display)
++{
++	display->fbtftops.set_addr_win = minipitft13_set_addr_win;
++	return 0;
++}
++
++FBTFT_REGISTER_DRIVER_START(&display)
++FBTFT_COMPATIBLE("sitronix,st7789v")
++FBTFT_VARIANT_COMPATIBLE("fbtft,minipitft13", variant_minipitft13)
++FBTFT_REGISTER_DRIVER_END(DRVNAME, &display);
+ 
+ MODULE_ALIAS("spi:" DRVNAME);
+ MODULE_ALIAS("platform:" DRVNAME);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0375-dwc-otg-fix-clang-Wignored-attributes-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0375-dwc-otg-fix-clang-Wignored-attributes-warning.patch
new file mode 100644
index 0000000000..b0e54c5c98
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0375-dwc-otg-fix-clang-Wignored-attributes-warning.patch
@@ -0,0 +1,36 @@
+From 9a07fe13e3dae16f3acbffcbf16176d97584506f Mon Sep 17 00:00:00 2001
+From: Jo Henke <37883863+jo-he@users.noreply.github.com>
+Date: Tue, 6 Apr 2021 11:21:35 +0000
+Subject: [PATCH] dwc-otg: fix clang -Wignored-attributes warning
+
+warning: attribute declaration must precede definition
+---
+ drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h
++++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h
+@@ -255,17 +255,17 @@ struct fiq_dma_info {
+ 	u8 slot_len[6];
+ };
+ 
+-struct __attribute__((packed)) fiq_split_dma_slot {
++struct fiq_split_dma_slot {
+ 	u8 buf[188];
+-};
++} __attribute__((packed));
+ 
+ struct fiq_dma_channel {
+-	struct __attribute__((packed)) fiq_split_dma_slot index[6];
+-};
++	struct fiq_split_dma_slot index[6];
++} __attribute__((packed));
+ 
+ struct fiq_dma_blob {
+-	struct __attribute__((packed)) fiq_dma_channel channel[0];
+-};
++	struct fiq_dma_channel channel[0];
++} __attribute__((packed));
+ 
+ /**
+  * struct fiq_hs_isoc_info - USB2.0 isochronous data
diff --git a/target/linux/bcm27xx/patches-5.15/950-0376-dwc-otg-fix-clang-Wsometimes-uninitialized-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0376-dwc-otg-fix-clang-Wsometimes-uninitialized-warning.patch
new file mode 100644
index 0000000000..c0749f17a5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0376-dwc-otg-fix-clang-Wsometimes-uninitialized-warning.patch
@@ -0,0 +1,21 @@
+From da8fee9ca5bce1228e699ab65d346aac737e174c Mon Sep 17 00:00:00 2001
+From: Jo Henke <37883863+jo-he@users.noreply.github.com>
+Date: Tue, 6 Apr 2021 11:38:28 +0000
+Subject: [PATCH] dwc-otg: fix clang -Wsometimes-uninitialized warning
+
+warning: variable 'retval' is used uninitialized whenever 'if' condition is false
+---
+ drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
+@@ -805,7 +805,7 @@ static int32_t dwc_otg_handle_pwrdn_sess
+  */
+ static uint32_t dwc_otg_handle_pwrdn_stschng_intr(dwc_otg_device_t *otg_dev)
+ {
+-	int retval;
++	uint32_t retval = 0;
+ 	gpwrdn_data_t gpwrdn = {.d32 = 0 };
+ 	gpwrdn_data_t gpwrdn_temp = {.d32 = 0 };
+ 	dwc_otg_core_if_t *core_if = otg_dev->core_if;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0377-dwc-otg-fix-clang-Wpointer-bool-conversion-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0377-dwc-otg-fix-clang-Wpointer-bool-conversion-warning.patch
new file mode 100644
index 0000000000..2baab423c6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0377-dwc-otg-fix-clang-Wpointer-bool-conversion-warning.patch
@@ -0,0 +1,24 @@
+From 92be81ca5125c980e0c4a62c134fbb6e4eb7cd6a Mon Sep 17 00:00:00 2001
+From: Jo Henke <37883863+jo-he@users.noreply.github.com>
+Date: Tue, 6 Apr 2021 11:45:14 +0000
+Subject: [PATCH] dwc-otg: fix clang -Wpointer-bool-conversion warning
+
+warning: address of array 'desc->wMaxPacketSize' will always evaluate to 'true'
+
+The wMaxPacketSize field is actually a two element array which content should
+be accessed via the UGETW macro.
+---
+ drivers/usb/host/dwc_otg/dwc_otg_pcd.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_pcd.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_pcd.c
+@@ -1487,7 +1487,7 @@ int dwc_otg_pcd_ep_enable(dwc_otg_pcd_t
+ 	num = UE_GET_ADDR(desc->bEndpointAddress);
+ 	dir = UE_GET_DIR(desc->bEndpointAddress);
+ 
+-	if (!desc->wMaxPacketSize) {
++	if (!UGETW(desc->wMaxPacketSize)) {
+ 		DWC_WARN("bad maxpacketsize\n");
+ 		retval = -DWC_E_INVALID;
+ 		goto out;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0378-staging-vcsm-cma-Fix-memory-leak-from-not-detaching-.patch b/target/linux/bcm27xx/patches-5.15/950-0378-staging-vcsm-cma-Fix-memory-leak-from-not-detaching-.patch
new file mode 100644
index 0000000000..f67723676b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0378-staging-vcsm-cma-Fix-memory-leak-from-not-detaching-.patch
@@ -0,0 +1,77 @@
+From 8c5dbd19e5182253e5f6b1deff6441599e01132d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 4 Nov 2020 18:54:20 +0000
+Subject: [PATCH] staging: vcsm-cma: Fix memory leak from not detaching
+ dmabuf
+
+When importing there was a missing call to detach the buffer,
+so each import leaked the sg table entry.
+
+Actually the release process for both locally allocated and
+imported buffers is identical, so fix them to both use the same
+function.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/vc-sm-cma/vc_sm.c   | 22 ++-----------------
+ 1 file changed, 2 insertions(+), 20 deletions(-)
+
+--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
+@@ -237,6 +237,7 @@ static void vc_sm_add_resource(struct vc
+ 
+ /*
+  * Cleans up imported dmabuf.
++ * Should be called with mutex held.
+  */
+ static void vc_sm_clean_up_dmabuf(struct vc_sm_buffer *buffer)
+ {
+@@ -244,7 +245,6 @@ static void vc_sm_clean_up_dmabuf(struct
+ 		return;
+ 
+ 	/* Handle cleaning up imported dmabufs */
+-	mutex_lock(&buffer->lock);
+ 	if (buffer->import.sgt) {
+ 		dma_buf_unmap_attachment(buffer->import.attach,
+ 					 buffer->import.sgt,
+@@ -255,7 +255,6 @@ static void vc_sm_clean_up_dmabuf(struct
+ 		dma_buf_detach(buffer->dma_buf, buffer->import.attach);
+ 		buffer->import.attach = NULL;
+ 	}
+-	mutex_unlock(&buffer->lock);
+ }
+ 
+ /*
+@@ -673,23 +672,6 @@ int vc_sm_import_dmabuf_mmap(struct dma_
+ }
+ 
+ static
+-void vc_sm_import_dma_buf_release(struct dma_buf *dmabuf)
+-{
+-	struct vc_sm_buffer *buf = dmabuf->priv;
+-
+-	pr_debug("%s: Relasing dma_buf %p\n", __func__, dmabuf);
+-	mutex_lock(&buf->lock);
+-	if (!buf->imported)
+-		return;
+-
+-	buf->in_use = 0;
+-
+-	vc_sm_vpu_free(buf);
+-
+-	vc_sm_release_resource(buf);
+-}
+-
+-static
+ int vc_sm_import_dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
+ 					  enum dma_data_direction direction)
+ {
+@@ -717,7 +699,7 @@ static const struct dma_buf_ops dma_buf_
+ 	.map_dma_buf = vc_sm_import_map_dma_buf,
+ 	.unmap_dma_buf = vc_sm_import_unmap_dma_buf,
+ 	.mmap = vc_sm_import_dmabuf_mmap,
+-	.release = vc_sm_import_dma_buf_release,
++	.release = vc_sm_dma_buf_release,
+ 	.attach = vc_sm_import_dma_buf_attach,
+ 	.detach = vc_sm_import_dma_buf_detatch,
+ 	.begin_cpu_access = vc_sm_import_dma_buf_begin_cpu_access,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0379-rpivid-Switch-to-new-clock-api.patch b/target/linux/bcm27xx/patches-5.15/950-0379-rpivid-Switch-to-new-clock-api.patch
new file mode 100644
index 0000000000..3bcd2450e7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0379-rpivid-Switch-to-new-clock-api.patch
@@ -0,0 +1,54 @@
+From 792ae143562fc4d4c22e492d3b1a3216d0fa2d14 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Mon, 19 Apr 2021 19:30:26 +0100
+Subject: [PATCH] rpivid: Switch to new clock api
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/staging/media/rpivid/rpivid.h       |  1 +
+ drivers/staging/media/rpivid/rpivid_video.c | 11 +++--------
+ 2 files changed, 4 insertions(+), 8 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -172,6 +172,7 @@ struct rpivid_dev {
+ 	void __iomem		*base_h265;
+ 
+ 	struct clk		*clock;
++	struct clk_request      *hevc_req;
+ 
+ 	struct rpivid_hw_irq_ctrl ic_active1;
+ 	struct rpivid_hw_irq_ctrl ic_active2;
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -499,8 +499,8 @@ static int rpivid_start_streaming(struct
+ 	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->start)
+ 		ret = dev->dec_ops->start(ctx);
+ 
+-	ret = clk_set_rate(dev->clock, max_hevc_clock);
+-	if (ret) {
++	dev->hevc_req = clk_request_start(dev->clock, max_hevc_clock);
++	if (!dev->hevc_req) {
+ 		dev_err(dev->dev, "Failed to set clock rate\n");
+ 		goto out;
+ 	}
+@@ -520,18 +520,13 @@ static void rpivid_stop_streaming(struct
+ {
+ 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
+ 	struct rpivid_dev *dev = ctx->dev;
+-	long min_hevc_clock = clk_round_rate(dev->clock, 0);
+-	int ret;
+ 
+ 	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->stop)
+ 		dev->dec_ops->stop(ctx);
+ 
+ 	rpivid_queue_cleanup(vq, VB2_BUF_STATE_ERROR);
+ 
+-	ret = clk_set_rate(dev->clock, min_hevc_clock);
+-	if (ret)
+-		dev_err(dev->dev, "Failed to set minimum clock rate\n");
+-
++	clk_request_done(dev->hevc_req);
+ 	clk_disable_unprepare(dev->clock);
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0380-rpivid-Only-clk_request_done-once.patch b/target/linux/bcm27xx/patches-5.15/950-0380-rpivid-Only-clk_request_done-once.patch
new file mode 100644
index 0000000000..c62ac45877
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0380-rpivid-Only-clk_request_done-once.patch
@@ -0,0 +1,26 @@
+From b18502733e7a1eeb2011150fb35fe332be7b8f5a Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 20 Apr 2021 13:34:18 +0100
+Subject: [PATCH] rpivid: Only clk_request_done once
+
+Fixes: 25486f49bfe2e3ae13b90478d1eebd91413136ad
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/staging/media/rpivid/rpivid_video.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -526,7 +526,11 @@ static void rpivid_stop_streaming(struct
+ 
+ 	rpivid_queue_cleanup(vq, VB2_BUF_STATE_ERROR);
+ 
+-	clk_request_done(dev->hevc_req);
++	if (dev->hevc_req)
++	{
++		clk_request_done(dev->hevc_req);
++		dev->hevc_req = NULL;
++	}
+ 	clk_disable_unprepare(dev->clock);
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0381-dwc_otg-fix-an-undeclared-variable.patch b/target/linux/bcm27xx/patches-5.15/950-0381-dwc_otg-fix-an-undeclared-variable.patch
new file mode 100644
index 0000000000..532a1e8f58
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0381-dwc_otg-fix-an-undeclared-variable.patch
@@ -0,0 +1,24 @@
+From 3888c829511b97d08462844312f24825dea413d9 Mon Sep 17 00:00:00 2001
+From: wangzx <593074943@qq.com>
+Date: Tue, 20 Apr 2021 22:33:26 +0800
+Subject: [PATCH] dwc_otg: fix an undeclared variable Replace an
+ undeclared variable used by DWC_DEBUGPL with the real endpoint address.
+ DWC_DEBUGPL does nothing with DEBUG undefined so it did not go wrong before.
+ Signed-off-by: Zixuan Wang <wangzixuan@sjtu.edu.cn>
+
+---
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c
+@@ -1026,7 +1026,8 @@ static void endpoint_reset(struct usb_hc
+ 	dwc_irqflags_t flags;
+ 	dwc_otg_hcd_t *dwc_otg_hcd = hcd_to_dwc_otg_hcd(hcd);
+ 
+-	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP RESET: Endpoint Num=0x%02d\n", epnum);
++	DWC_DEBUGPL(DBG_HCD, "DWC OTG HCD EP RESET: Endpoint Num=0x%02d\n",
++		    ep->desc.bEndpointAddress);
+ 
+ 	DWC_SPINLOCK_IRQSAVE(dwc_otg_hcd->lock, &flags);
+ 	if (ep->hcpriv) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0382-drm-panel-jdi-lt070me05000-Use-gpiod_set_value_cansl.patch b/target/linux/bcm27xx/patches-5.15/950-0382-drm-panel-jdi-lt070me05000-Use-gpiod_set_value_cansl.patch
new file mode 100644
index 0000000000..08e2651710
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0382-drm-panel-jdi-lt070me05000-Use-gpiod_set_value_cansl.patch
@@ -0,0 +1,67 @@
+From 0c891e692cd3f1927d1f565650b90fe4890c1fd4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 15 Apr 2021 17:30:35 +0100
+Subject: [PATCH] drm/panel: jdi-lt070me05000: Use
+ gpiod_set_value_cansleep
+
+There is no reason why the control GPIOs for the panel can not
+be connected to I2C or similar GPIO interfaces that may need to
+sleep, therefore switch from gpiod_set_value to
+gpiod_set_value_cansleep calls to configure them.
+Without that you get complaints from gpiolib every time the state
+is changed.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
++++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+@@ -205,11 +205,11 @@ static int jdi_panel_unprepare(struct dr
+ 	if (ret < 0)
+ 		dev_err(dev, "regulator disable failed, %d\n", ret);
+ 
+-	gpiod_set_value(jdi->enable_gpio, 0);
++	gpiod_set_value_cansleep(jdi->enable_gpio, 0);
+ 
+-	gpiod_set_value(jdi->reset_gpio, 1);
++	gpiod_set_value_cansleep(jdi->reset_gpio, 1);
+ 
+-	gpiod_set_value(jdi->dcdc_en_gpio, 0);
++	gpiod_set_value_cansleep(jdi->dcdc_en_gpio, 0);
+ 
+ 	jdi->prepared = false;
+ 
+@@ -233,13 +233,13 @@ static int jdi_panel_prepare(struct drm_
+ 
+ 	msleep(20);
+ 
+-	gpiod_set_value(jdi->dcdc_en_gpio, 1);
++	gpiod_set_value_cansleep(jdi->dcdc_en_gpio, 1);
+ 	usleep_range(10, 20);
+ 
+-	gpiod_set_value(jdi->reset_gpio, 0);
++	gpiod_set_value_cansleep(jdi->reset_gpio, 0);
+ 	usleep_range(10, 20);
+ 
+-	gpiod_set_value(jdi->enable_gpio, 1);
++	gpiod_set_value_cansleep(jdi->enable_gpio, 1);
+ 	usleep_range(10, 20);
+ 
+ 	ret = jdi_panel_init(jdi);
+@@ -263,11 +263,11 @@ poweroff:
+ 	if (ret < 0)
+ 		dev_err(dev, "regulator disable failed, %d\n", ret);
+ 
+-	gpiod_set_value(jdi->enable_gpio, 0);
++	gpiod_set_value_cansleep(jdi->enable_gpio, 0);
+ 
+-	gpiod_set_value(jdi->reset_gpio, 1);
++	gpiod_set_value_cansleep(jdi->reset_gpio, 1);
+ 
+-	gpiod_set_value(jdi->dcdc_en_gpio, 0);
++	gpiod_set_value_cansleep(jdi->dcdc_en_gpio, 0);
+ 
+ 	return ret;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0383-staging-bcm2835-codec-Fix-support-for-levels-4.1-and.patch b/target/linux/bcm27xx/patches-5.15/950-0383-staging-bcm2835-codec-Fix-support-for-levels-4.1-and.patch
new file mode 100644
index 0000000000..16ec060052
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0383-staging-bcm2835-codec-Fix-support-for-levels-4.1-and.patch
@@ -0,0 +1,36 @@
+From a7c3abc971eb4e7771697a70f8b6ca42bc2b1db0 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Mar 2021 18:28:40 +0000
+Subject: [PATCH] staging/bcm2835-codec: Fix support for levels 4.1 and
+ 4.2
+
+The driver said it supported H264 levels 4.1 and 4.2, but
+was missing the V4L2 to MMAL mappings.
+
+Add in those mappings.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c  | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1789,6 +1789,17 @@ static int bcm2835_codec_set_level_profi
+ 		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
+ 			param.level = MMAL_VIDEO_LEVEL_H264_4;
+ 			break;
++		/*
++		 * Note that the hardware spec is level 4.0. Levels above that
++		 * are there for correctly encoding the headers and may not
++		 * be able to keep up with real-time.
++		 */
++		case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
++			param.level = MMAL_VIDEO_LEVEL_H264_41;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
++			param.level = MMAL_VIDEO_LEVEL_H264_42;
++			break;
+ 		default:
+ 			/* Should never get here */
+ 			break;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0384-staging-bcm2835-codec-Set-the-colourspace-appropriat.patch b/target/linux/bcm27xx/patches-5.15/950-0384-staging-bcm2835-codec-Set-the-colourspace-appropriat.patch
new file mode 100644
index 0000000000..91443600e8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0384-staging-bcm2835-codec-Set-the-colourspace-appropriat.patch
@@ -0,0 +1,83 @@
+From f540950062dc13d81cf3cf5d34195bc4948d0c55 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 4 Feb 2021 19:08:23 +0000
+Subject: [PATCH] staging/bcm2835-codec: Set the colourspace
+ appropriately for RGB formats
+
+Video decode supports YUV and RGB formats. YUV needs to report SMPTE170M
+or REC709 appropriately, whilst RGB should report SRGB.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 51 +++++++++++++------
+ 1 file changed, 36 insertions(+), 15 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -930,23 +930,43 @@ static void send_eos_event(struct bcm283
+ 	v4l2_event_queue_fh(&ctx->fh, &ev);
+ }
+ 
+-static void color_mmal2v4l(struct bcm2835_codec_ctx *ctx, u32 mmal_color_space)
++static void color_mmal2v4l(struct bcm2835_codec_ctx *ctx, u32 encoding,
++			   u32 color_space)
+ {
+-	switch (mmal_color_space) {
+-	case MMAL_COLOR_SPACE_ITUR_BT601:
+-		ctx->colorspace = V4L2_COLORSPACE_REC709;
+-		ctx->xfer_func = V4L2_XFER_FUNC_709;
+-		ctx->ycbcr_enc = V4L2_YCBCR_ENC_601;
+-		ctx->quant = V4L2_QUANTIZATION_LIM_RANGE;
+-		break;
++	int is_rgb;
+ 
+-	case MMAL_COLOR_SPACE_ITUR_BT709:
+-		ctx->colorspace = V4L2_COLORSPACE_REC709;
+-		ctx->xfer_func = V4L2_XFER_FUNC_709;
+-		ctx->ycbcr_enc = V4L2_YCBCR_ENC_709;
+-		ctx->quant = V4L2_QUANTIZATION_LIM_RANGE;
++	switch (encoding) {
++	case MMAL_ENCODING_I420:
++	case MMAL_ENCODING_YV12:
++	case MMAL_ENCODING_NV12:
++	case MMAL_ENCODING_NV21:
++	case V4L2_PIX_FMT_YUYV:
++	case V4L2_PIX_FMT_YVYU:
++	case V4L2_PIX_FMT_UYVY:
++	case V4L2_PIX_FMT_VYUY:
++		/* YUV based colourspaces */
++		switch (color_space) {
++		case MMAL_COLOR_SPACE_ITUR_BT601:
++			ctx->colorspace = V4L2_COLORSPACE_SMPTE170M;
++			break;
++
++		case MMAL_COLOR_SPACE_ITUR_BT709:
++			ctx->colorspace = V4L2_COLORSPACE_REC709;
++			break;
++		default:
++			break;
++		}
++		break;
++	default:
++		/* RGB based colourspaces */
++		ctx->colorspace = V4L2_COLORSPACE_SRGB;
+ 		break;
+ 	}
++	ctx->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(ctx->colorspace);
++	ctx->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(ctx->colorspace);
++	is_rgb = ctx->colorspace == V4L2_COLORSPACE_SRGB;
++	ctx->quant = V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb, ctx->colorspace,
++						   ctx->ycbcr_enc);
+ }
+ 
+ static void handle_fmt_changed(struct bcm2835_codec_ctx *ctx,
+@@ -985,7 +1005,8 @@ static void handle_fmt_changed(struct bc
+ 	q_data->height = format->es.video.height;
+ 	q_data->sizeimage = format->buffer_size_min;
+ 	if (format->es.video.color_space)
+-		color_mmal2v4l(ctx, format->es.video.color_space);
++		color_mmal2v4l(ctx, format->format.encoding,
++			       format->es.video.color_space);
+ 
+ 	q_data->aspect_ratio.numerator = format->es.video.par.num;
+ 	q_data->aspect_ratio.denominator = format->es.video.par.den;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0385-staging-bcm2835-codec-Pass-corrupt-frame-flag.patch b/target/linux/bcm27xx/patches-5.15/950-0385-staging-bcm2835-codec-Pass-corrupt-frame-flag.patch
new file mode 100644
index 0000000000..4f1aa13b57
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0385-staging-bcm2835-codec-Pass-corrupt-frame-flag.patch
@@ -0,0 +1,42 @@
+From 4cbf4590272002606374d4fcd31f99be85869a13 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 9 Dec 2020 18:53:56 +0000
+Subject: [PATCH] staging/bcm2835-codec: Pass corrupt frame flag.
+
+MMAL has the flag MMAL_BUFFER_HEADER_FLAG_CORRUPTED but that
+wasn't being passed through, so add it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c        | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1019,6 +1019,7 @@ static void op_buffer_cb(struct vchiq_mm
+ 			 struct mmal_buffer *mmal_buf)
+ {
+ 	struct bcm2835_codec_ctx *ctx = port->cb_ctx;
++	enum vb2_buffer_state buf_state = VB2_BUF_STATE_DONE;
+ 	struct m2m_mmal_buffer *buf;
+ 	struct vb2_v4l2_buffer *vb2;
+ 
+@@ -1075,6 +1076,9 @@ static void op_buffer_cb(struct vchiq_mm
+ 		vb2->flags |= V4L2_BUF_FLAG_LAST;
+ 	}
+ 
++	if (mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_CORRUPTED)
++		buf_state = VB2_BUF_STATE_ERROR;
++
+ 	/* vb2 timestamps in nsecs, mmal in usecs */
+ 	vb2->vb2_buf.timestamp = mmal_buf->pts * 1000;
+ 
+@@ -1082,7 +1086,7 @@ static void op_buffer_cb(struct vchiq_mm
+ 	if (mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_KEYFRAME)
+ 		vb2->flags |= V4L2_BUF_FLAG_KEYFRAME;
+ 
+-	vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_DONE);
++	vb2_buffer_done(&vb2->vb2_buf, buf_state);
+ 	ctx->num_op_buffers++;
+ 
+ 	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: done %d output buffers\n",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0386-staging-bcm2835-camera-Add-support-for-H264-levels-4.patch b/target/linux/bcm27xx/patches-5.15/950-0386-staging-bcm2835-camera-Add-support-for-H264-levels-4.patch
new file mode 100644
index 0000000000..9f058b0fa1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0386-staging-bcm2835-camera-Add-support-for-H264-levels-4.patch
@@ -0,0 +1,58 @@
+From 5756e409f1d8818527956e30418eb1449ca5e783 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Mar 2021 18:34:50 +0000
+Subject: [PATCH] staging/bcm2835-camera: Add support for H264 levels
+ 4.1 and 4.2
+
+Whilst the hardware can't achieve the limits of level 4.2 under
+all situations, it can exceed level 4.0.
+
+Allow selection of levels 4.1 and 4.2.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-camera/controls.c   | 19 +++++++++++++++++--
+ 1 file changed, 17 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/controls.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c
+@@ -709,6 +709,8 @@ static int ctrl_set_video_encode_profile
+ 		case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
+ 		case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
+ 		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
++		case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
++		case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
+ 			dev->capture.enc_level = ctrl->val;
+ 			break;
+ 		default:
+@@ -774,6 +776,17 @@ static int ctrl_set_video_encode_profile
+ 		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
+ 			param.level = MMAL_VIDEO_LEVEL_H264_4;
+ 			break;
++		/*
++		 * Note that the hardware spec is level 4.0. Achieving levels
++		 * above that depend on exactly the resolution and frame rate
++		 * being requested.
++		 */
++		case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
++			param.level = MMAL_VIDEO_LEVEL_H264_41;
++			break;
++		case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
++			param.level = MMAL_VIDEO_LEVEL_H264_42;
++			break;
+ 		default:
+ 			/* Should never get here */
+ 			break;
+@@ -1224,8 +1237,10 @@ static const struct bm2835_mmal_v4l2_ctr
+ 			 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
+ 			 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
+ 			 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
+-			 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_4_0)),
+-		.max = V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
++			 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_4_0) |
++			 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_4_1) |
++			 BIT(V4L2_MPEG_VIDEO_H264_LEVEL_4_2)),
++		.max = V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
+ 		.def = V4L2_MPEG_VIDEO_H264_LEVEL_4_0,
+ 		.step = 1,
+ 		.imenu = NULL,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0387-staging-bcm2835-codec-Do-not-update-crop-from-S_FMT-.patch b/target/linux/bcm27xx/patches-5.15/950-0387-staging-bcm2835-codec-Do-not-update-crop-from-S_FMT-.patch
new file mode 100644
index 0000000000..c87ca955ba
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0387-staging-bcm2835-codec-Do-not-update-crop-from-S_FMT-.patch
@@ -0,0 +1,36 @@
+From 9a7b20e4a376a2cccb2fb8d3e87eb4358c17d2e8 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 15 Apr 2021 11:07:55 +0100
+Subject: [PATCH] staging/bcm2835-codec: Do not update crop from S_FMT
+ after res change
+
+During decode, setting the CAPTURE queue format was setting the crop
+rectangle to the requested height before aligning up the format to
+cater for simple clients that weren't expecting to deal with cropping
+and the SELECTION API.
+This caused problems on some resolution change events if the client
+didn't also then use the selection API.
+
+Disable the crop update after a resolution change.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c       | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -999,6 +999,13 @@ static void handle_fmt_changed(struct bc
+ 
+ 	q_data->crop_width = format->es.video.crop.width;
+ 	q_data->crop_height = format->es.video.crop.height;
++	/*
++	 * Stop S_FMT updating crop_height should it be unaligned.
++	 * Client can still update the crop region via S_SELECTION should it
++	 * really want to, but the decoder is likely to complain that the
++	 * format then doesn't match.
++	 */
++	q_data->selection_set = true;
+ 	q_data->bytesperline = get_bytesperline(format->es.video.width,
+ 						q_data->fmt);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0388-staging-bcm2835-isp-Fix-compiler-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0388-staging-bcm2835-isp-Fix-compiler-warning.patch
new file mode 100644
index 0000000000..59ced84af7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0388-staging-bcm2835-isp-Fix-compiler-warning.patch
@@ -0,0 +1,25 @@
+From 7eba207e9bd8381e7dfaab3d7a4f828864741c06 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 23 Apr 2021 16:16:49 +0100
+Subject: [PATCH] staging/bcm2835-isp: Fix compiler warning
+
+The result of dividing a u32 by a size_t is an unsigned int on arm32
+and a long unsigned int on arm64. Use "%zu" (the size_t format) to
+remove the build warning for 64-bit builds.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -1235,7 +1235,7 @@ static int bcm2835_isp_get_supported_fmt
+ 	if (ret) {
+ 		if (ret == MMAL_MSG_STATUS_ENOSPC) {
+ 			v4l2_err(&dev->v4l2_dev,
+-				 "%s: port has more encodings than we provided space for. Some are dropped (%u vs %u).\n",
++				 "%s: port has more encodings than we provided space for. Some are dropped (%zu vs %u).\n",
+ 				 __func__, param_size / sizeof(u32),
+ 				 MAX_SUPPORTED_ENCODINGS);
+ 			num_encodings = MAX_SUPPORTED_ENCODINGS;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0389-gpio-poweroff-Remember-the-old-poweroff-handler.patch b/target/linux/bcm27xx/patches-5.15/950-0389-gpio-poweroff-Remember-the-old-poweroff-handler.patch
new file mode 100644
index 0000000000..00dc1b3d03
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0389-gpio-poweroff-Remember-the-old-poweroff-handler.patch
@@ -0,0 +1,53 @@
+From ae78ddade19993b7ab0dee76137510a996c3765c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 27 Apr 2021 08:59:01 +0100
+Subject: [PATCH] gpio-poweroff: Remember the old poweroff handler
+
+Keeping a copy of the old poweroff handler allows it to be restored
+should this module be unloaded, but also provides a fallback if the
+power hasn't been removed when the timeout elapses.
+
+See: https://github.com/raspberrypi/rpi-eeprom/issues/330
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/power/reset/gpio-poweroff.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+--- a/drivers/power/reset/gpio-poweroff.c
++++ b/drivers/power/reset/gpio-poweroff.c
+@@ -24,6 +24,7 @@ static struct gpio_desc *reset_gpio;
+ static u32 timeout = DEFAULT_TIMEOUT_MS;
+ static u32 active_delay = 100;
+ static u32 inactive_delay = 100;
++static void (*old_power_off)(void);
+ 
+ static void gpio_poweroff_do_poweroff(void)
+ {
+@@ -43,6 +44,9 @@ static void gpio_poweroff_do_poweroff(vo
+ 	/* give it some time */
+ 	mdelay(timeout);
+ 
++	if (old_power_off)
++		old_power_off();
++
+ 	WARN_ON(1);
+ }
+ 
+@@ -83,6 +87,7 @@ static int gpio_poweroff_probe(struct pl
+ 		gpiod_export_link(&pdev->dev, "poweroff-gpio", reset_gpio);
+ 	}
+ 
++	old_power_off = pm_power_off;
+ 	pm_power_off = &gpio_poweroff_do_poweroff;
+ 	return 0;
+ }
+@@ -90,7 +95,7 @@ static int gpio_poweroff_probe(struct pl
+ static int gpio_poweroff_remove(struct platform_device *pdev)
+ {
+ 	if (pm_power_off == &gpio_poweroff_do_poweroff)
+-		pm_power_off = NULL;
++		pm_power_off = old_power_off;
+ 
+ 	gpiod_unexport(reset_gpio);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0390-media-i2c-ov5647-Correct-pixel-array-offset.patch b/target/linux/bcm27xx/patches-5.15/950-0390-media-i2c-ov5647-Correct-pixel-array-offset.patch
new file mode 100644
index 0000000000..db7d289293
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0390-media-i2c-ov5647-Correct-pixel-array-offset.patch
@@ -0,0 +1,25 @@
+From 148a9f64b942cceb1ce155dfbc2fe893669de198 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 11 May 2021 12:52:26 +0100
+Subject: [PATCH] media: i2c: ov5647: Correct pixel array offset
+
+The top offset in the pixel array is actually 6 (see page 3-1 of the
+OV5647 data sheet).
+
+Fixes: f2f7ad5ce5e52 ("media: i2c: ov5647: Selection compliance fixes")
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -68,7 +68,7 @@
+ #define OV5647_NATIVE_HEIGHT		1956U
+ 
+ #define OV5647_PIXEL_ARRAY_LEFT		16U
+-#define OV5647_PIXEL_ARRAY_TOP		16U
++#define OV5647_PIXEL_ARRAY_TOP		6U
+ #define OV5647_PIXEL_ARRAY_WIDTH	2592U
+ #define OV5647_PIXEL_ARRAY_HEIGHT	1944U
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0391-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch b/target/linux/bcm27xx/patches-5.15/950-0391-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch
new file mode 100644
index 0000000000..bceb24c4fd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0391-media-i2c-ov5647-Correct-minimum-VBLANK-value.patch
@@ -0,0 +1,26 @@
+From 50a6f9ee1e93724854efeb20ebbe65d2b0637d2a Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 11 May 2021 12:57:22 +0100
+Subject: [PATCH] media: i2c: ov5647: Correct minimum VBLANK value
+
+Trial and error reveals that the minimum vblank value appears to be 24
+(the OV5647 data sheet does not give any clues). This fixes streaming
+lock-ups in full resolution mode.
+
+Fixes: 9b5a5ebedc303 ("media: i2c: ov5647: Add support for V4L2_CID_VBLANK")
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -72,7 +72,7 @@
+ #define OV5647_PIXEL_ARRAY_WIDTH	2592U
+ #define OV5647_PIXEL_ARRAY_HEIGHT	1944U
+ 
+-#define OV5647_VBLANK_MIN		4
++#define OV5647_VBLANK_MIN		24
+ #define OV5647_VTS_MAX			32767
+ 
+ #define OV5647_EXPOSURE_MIN		4
diff --git a/target/linux/bcm27xx/patches-5.15/950-0392-media-i2c-ov5647-Fix-v4l2-compliance-failure-subscri.patch b/target/linux/bcm27xx/patches-5.15/950-0392-media-i2c-ov5647-Fix-v4l2-compliance-failure-subscri.patch
new file mode 100644
index 0000000000..44deb271ae
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0392-media-i2c-ov5647-Fix-v4l2-compliance-failure-subscri.patch
@@ -0,0 +1,26 @@
+From 9b05e15ea8964ec36727439eb23685bb2e775c4e Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Wed, 12 May 2021 07:39:21 +0100
+Subject: [PATCH] media: i2c: ov5647: Fix v4l2-compliance failure
+ subscribing to events
+
+Fixes the following v4l2-compliance failure:
+
+fail: v4l2-test-controls.cpp(871): subscribe event for control 'User Controls' failed test
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -879,6 +879,8 @@ static const struct v4l2_subdev_core_ops
+ 	.g_register		= ov5647_sensor_get_register,
+ 	.s_register		= ov5647_sensor_set_register,
+ #endif
++	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
++	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+ };
+ 
+ static const struct v4l2_rect *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0393-media-rpivid-Remove-the-need-to-have-num_entry_point.patch b/target/linux/bcm27xx/patches-5.15/950-0393-media-rpivid-Remove-the-need-to-have-num_entry_point.patch
new file mode 100644
index 0000000000..aec95636f9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0393-media-rpivid-Remove-the-need-to-have-num_entry_point.patch
@@ -0,0 +1,980 @@
+From 4b33f988d9da9776bcfe218df4ab9865f4b771a8 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 21 May 2020 11:49:37 +0100
+Subject: [PATCH] media: rpivid: Remove the need to have
+ num_entry_points set
+
+VAAPI H265 has num entry points but never sets it. Allow a VAAPI
+shim to work without requiring rewriting the VAAPI driver.
+num_entry_points can be calculated from the slice_segment_addr
+of the next slice so delay processing until we have that.
+
+Also includes some minor cosmetics.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid_h265.c | 699 +++++++++++----------
+ 1 file changed, 365 insertions(+), 334 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -202,8 +202,17 @@ struct rpivid_dec_env {
+ 	unsigned int dpbno_col;
+ 	u32 reg_slicestart;
+ 	int collocated_from_l0_flag;
+-	unsigned int wpp_entry_x;
+-	unsigned int wpp_entry_y;
++	/*
++	 * Last CTB/Tile X,Y processed by (wpp_)entry_point
++	 * Could be in _state as P0 only but needs updating where _state
++	 * is const
++	 */
++	unsigned int entry_ctb_x;
++	unsigned int entry_ctb_y;
++	unsigned int entry_tile_x;
++	unsigned int entry_tile_y;
++	unsigned int entry_qp;
++	u32 entry_slice;
+ 
+ 	u32 rpi_config2;
+ 	u32 rpi_framesize;
+@@ -239,22 +248,17 @@ struct rpivid_dec_state {
+ 	struct v4l2_ctrl_hevc_pps pps;
+ 
+ 	// Helper vars & tables derived from sps/pps
+-	unsigned int log2_ctb_size; /* log2 width of a CTB */
+-	unsigned int ctb_width; /* Width in CTBs */
+-	unsigned int ctb_height; /* Height in CTBs */
+-	unsigned int ctb_size; /* Pic area in CTBs */
+-	unsigned int num_tile_columns;
+-	unsigned int num_tile_rows;
+-	u8 column_width[member_size(struct v4l2_ctrl_hevc_pps,
+-				    column_width_minus1)];
+-	u8 row_height[member_size(struct v4l2_ctrl_hevc_pps,
+-				  row_height_minus1)];
++	unsigned int log2_ctb_size;     /* log2 width of a CTB */
++	unsigned int ctb_width;         /* Width in CTBs */
++	unsigned int ctb_height;        /* Height in CTBs */
++	unsigned int ctb_size;          /* Pic area in CTBs */
++	unsigned int tile_width;        /* Width in tiles */
++	unsigned int tile_height;       /* Height in tiles */
+ 
+ 	int *col_bd;
+ 	int *row_bd;
+ 	int *ctb_addr_rs_to_ts;
+ 	int *ctb_addr_ts_to_rs;
+-	int *tile_id;
+ 
+ 	// Aux starage for DPB
+ 	// Hold refs
+@@ -274,6 +278,12 @@ struct rpivid_dec_state {
+ 	unsigned int slice_qp;
+ 	unsigned int max_num_merge_cand; // 0 if I-slice
+ 	bool dependent_slice_segment_flag;
++
++	unsigned int start_ts;          /* slice_segment_addr -> ts */
++	unsigned int start_ctb_x;       /* CTB X,Y of start_ts */
++	unsigned int start_ctb_y;
++	unsigned int prev_ctb_x;        /* CTB X,Y of start_ts - 1 */
++	unsigned int prev_ctb_y;
+ };
+ 
+ static inline int clip_int(const int x, const int lo, const int hi)
+@@ -319,15 +329,16 @@ static int ctb_to_tile(unsigned int ctb,
+ 	return i - 1;
+ }
+ 
+-static int ctb_to_slice_w_h(unsigned int ctb, int ctb_size, int width,
+-			    unsigned int *bd, int num)
++static unsigned int ctb_to_tile_x(const struct rpivid_dec_state *const s,
++				  const unsigned int ctb_x)
+ {
+-	if (ctb < bd[num - 1])
+-		return ctb_size;
+-	else if (width % ctb_size)
+-		return width % ctb_size;
+-	else
+-		return ctb_size;
++	return ctb_to_tile(ctb_x, s->col_bd, s->tile_width);
++}
++
++static unsigned int ctb_to_tile_y(const struct rpivid_dec_state *const s,
++				  const unsigned int ctb_y)
++{
++	return ctb_to_tile(ctb_y, s->row_bd, s->tile_height);
+ }
+ 
+ static void aux_q_free(struct rpivid_ctx *const ctx,
+@@ -532,6 +543,15 @@ static void write_prob(struct rpivid_dec
+ 		p1_apb_write(de, 0x1000 + i,
+ 			     dst[i] + (dst[i + 1] << 8) + (dst[i + 2] << 16) +
+ 				     (dst[i + 3] << 24));
++
++	/*
++	 * Having written the prob array back it up
++	 * This is not always needed but is a small overhead that simplifies
++	 * (and speeds up) some multi-tile & WPP scenarios
++	 * There are no scenarios where having written a prob we ever want
++	 * a previous (non-initial) state back
++	 */
++	p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
+ }
+ 
+ static void write_scaling_factors(struct rpivid_dec_env *const de)
+@@ -552,8 +572,8 @@ static inline __u32 dma_to_axi_addr(dma_
+ static void write_bitstream(struct rpivid_dec_env *const de,
+ 			    const struct rpivid_dec_state *const s)
+ {
+-	// Note that FFmpeg removes emulation prevention bytes, so this is
+-	// matched in the configuration here.
++	// Note that FFmpeg V4L2 does not remove emulation prevention bytes,
++	// so this is matched in the configuration here.
+ 	// Whether that is the correct behaviour or not is not clear in the
+ 	// spec.
+ 	const int rpi_use_emu = 1;
+@@ -579,78 +599,26 @@ static void write_bitstream(struct rpivi
+ 
+ //////////////////////////////////////////////////////////////////////////////
+ 
+-static void write_slice(struct rpivid_dec_env *const de,
+-			const struct rpivid_dec_state *const s,
+-			const unsigned int slice_w,
+-			const unsigned int slice_h)
+-{
+-	u32 u32 = (s->sh->slice_type << 12) +
+-		  (((s->sh->flags &
+-		     V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_LUMA) != 0)
+-		   << 14) +
+-		  (((s->sh->flags &
+-		     V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_CHROMA) != 0)
+-		   << 15) +
+-		  (slice_w << 17) + (slice_h << 24);
+-
+-	u32 |= (s->max_num_merge_cand << 0) + (s->nb_refs[L0] << 4) +
+-	       (s->nb_refs[L1] << 8);
+-
+-	if (s->sh->slice_type == HEVC_SLICE_B)
+-		u32 |= ((s->sh->flags &
+-			 V4L2_HEVC_SLICE_PARAMS_FLAG_MVD_L1_ZERO) != 0)
+-		       << 16;
+-	p1_apb_write(de, RPI_SLICE, u32);
+-}
+-
+-//////////////////////////////////////////////////////////////////////////////
+-// Tiles mode
+-
+-static void new_entry_point(struct rpivid_dec_env *const de,
+-			    const struct rpivid_dec_state *const s,
+-			    const int do_bte,
+-			    const int reset_qp_y, const int ctb_addr_ts)
++/*
++ * The slice constant part of the slice register - width and height need to
++ * be ORed in later as they are per-tile / WPP-row
++ */
++static u32 slice_reg_const(const struct rpivid_dec_state *const s)
+ {
+-	int ctb_col = s->ctb_addr_ts_to_rs[ctb_addr_ts] %
+-							de->pic_width_in_ctbs_y;
+-	int ctb_row = s->ctb_addr_ts_to_rs[ctb_addr_ts] /
+-							de->pic_width_in_ctbs_y;
+-
+-	int tile_x = ctb_to_tile(ctb_col, s->col_bd, s->num_tile_columns);
+-	int tile_y = ctb_to_tile(ctb_row, s->row_bd, s->num_tile_rows);
+-
+-	int endx = s->col_bd[tile_x + 1] - 1;
+-	int endy = s->row_bd[tile_y + 1] - 1;
+-
+-	u8 slice_w = ctb_to_slice_w_h(ctb_col, 1 << s->log2_ctb_size,
+-				      s->sps.pic_width_in_luma_samples,
+-				      s->col_bd, s->num_tile_columns);
+-	u8 slice_h = ctb_to_slice_w_h(ctb_row, 1 << s->log2_ctb_size,
+-				      s->sps.pic_height_in_luma_samples,
+-				      s->row_bd, s->num_tile_rows);
+-
+-	p1_apb_write(de, RPI_TILESTART,
+-		     s->col_bd[tile_x] + (s->row_bd[tile_y] << 16));
+-	p1_apb_write(de, RPI_TILEEND, endx + (endy << 16));
+-
+-	if (do_bte)
+-		p1_apb_write(de, RPI_BEGINTILEEND, endx + (endy << 16));
++	u32 x = (s->max_num_merge_cand << 0) |
++		(s->nb_refs[L0] << 4) |
++		(s->nb_refs[L1] << 8) |
++		(s->sh->slice_type << 12);
++
++	if (s->sh->flags & V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_LUMA)
++		x |= BIT(14);
++	if (s->sh->flags & V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_CHROMA)
++		x |= BIT(15);
++	if (s->sh->slice_type == HEVC_SLICE_B &&
++	    (s->sh->flags & V4L2_HEVC_SLICE_PARAMS_FLAG_MVD_L1_ZERO))
++		x |= BIT(16);
+ 
+-	write_slice(de, s, slice_w, slice_h);
+-
+-	if (reset_qp_y) {
+-		unsigned int sps_qp_bd_offset =
+-			6 * s->sps.bit_depth_luma_minus8;
+-
+-		p1_apb_write(de, RPI_QP, sps_qp_bd_offset + s->slice_qp);
+-	}
+-
+-	p1_apb_write(de, RPI_MODE,
+-		     (0xFFFF << 0) + (0x0 << 16) +
+-			     ((tile_x == s->num_tile_columns - 1) << 17) +
+-			     ((tile_y == s->num_tile_rows - 1) << 18));
+-
+-	p1_apb_write(de, RPI_CONTROL, (ctb_col << 0) + (ctb_row << 16));
++	return x;
+ }
+ 
+ //////////////////////////////////////////////////////////////////////////////
+@@ -934,197 +902,256 @@ static void pre_slice_decode(struct rpiv
+ 		       (sh->slice_cb_qp_offset & 31)); // CMD_QPOFF
+ }
+ 
+-//////////////////////////////////////////////////////////////////////////////
+-// Write STATUS register with expected end CTU address of previous slice
+-
+-static void end_previous_slice(struct rpivid_dec_env *const de,
+-			       const struct rpivid_dec_state *const s,
+-			       const int ctb_addr_ts)
+-{
+-	int last_x =
+-		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] % de->pic_width_in_ctbs_y;
+-	int last_y =
+-		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] / de->pic_width_in_ctbs_y;
+-
+-	p1_apb_write(de, RPI_STATUS, 1 + (last_x << 5) + (last_y << 18));
+-}
+-
+-static void wpp_pause(struct rpivid_dec_env *const de, int ctb_row)
+-{
+-	p1_apb_write(de, RPI_STATUS, (ctb_row << 18) + 0x25);
+-	p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
+-	p1_apb_write(de, RPI_MODE,
+-		     ctb_row == de->pic_height_in_ctbs_y - 1 ?
+-							0x70000 : 0x30000);
+-	p1_apb_write(de, RPI_CONTROL, (ctb_row << 16) + 2);
+-}
+-
+-static void wpp_end_previous_slice(struct rpivid_dec_env *const de,
+-				   const struct rpivid_dec_state *const s,
+-				   int ctb_addr_ts)
+-{
+-	int new_x = s->sh->slice_segment_addr % de->pic_width_in_ctbs_y;
+-	int new_y = s->sh->slice_segment_addr / de->pic_width_in_ctbs_y;
+-	int last_x =
+-		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] % de->pic_width_in_ctbs_y;
+-	int last_y =
+-		s->ctb_addr_ts_to_rs[ctb_addr_ts - 1] / de->pic_width_in_ctbs_y;
+-
+-	if (de->wpp_entry_x < 2 && (de->wpp_entry_y < new_y || new_x > 2) &&
+-	    de->pic_width_in_ctbs_y > 2)
+-		wpp_pause(de, last_y);
+-	p1_apb_write(de, RPI_STATUS, 1 + (last_x << 5) + (last_y << 18));
+-	if (new_x == 2 || (de->pic_width_in_ctbs_y == 2 &&
+-			   de->wpp_entry_y < new_y))
+-		p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++static void write_slice(struct rpivid_dec_env *const de,
++			const struct rpivid_dec_state *const s,
++			const u32 slice_const,
++			const unsigned int ctb_col,
++			const unsigned int ctb_row)
++{
++	const unsigned int cs = (1 << s->log2_ctb_size);
++	const unsigned int w_last = s->sps.pic_width_in_luma_samples & (cs - 1);
++	const unsigned int h_last = s->sps.pic_height_in_luma_samples & (cs - 1);
++
++	p1_apb_write(de, RPI_SLICE,
++		     slice_const |
++		     ((ctb_col + 1 < s->ctb_width || !w_last ?
++				cs : w_last) << 17) |
++		     ((ctb_row + 1 < s->ctb_height || !h_last ?
++				cs : h_last) << 24));
+ }
+ 
+-//////////////////////////////////////////////////////////////////////////////
+-// Wavefront mode
++#define PAUSE_MODE_WPP  1
++#define PAUSE_MODE_TILE 0xffff
+ 
+-static void wpp_entry_point(struct rpivid_dec_env *const de,
++/*
++ * N.B. This can be called to fill in data from the previous slice so must not
++ * use any state data that may change from slice to slice (e.g. qp)
++ */
++static void new_entry_point(struct rpivid_dec_env *const de,
+ 			    const struct rpivid_dec_state *const s,
+-			    const int do_bte,
+-			    const int reset_qp_y, const int ctb_addr_ts)
+-{
+-	int ctb_size = 1 << s->log2_ctb_size;
+-	int ctb_addr_rs = s->ctb_addr_ts_to_rs[ctb_addr_ts];
+-
+-	int ctb_col = de->wpp_entry_x = ctb_addr_rs % de->pic_width_in_ctbs_y;
+-	int ctb_row = de->wpp_entry_y = ctb_addr_rs / de->pic_width_in_ctbs_y;
++			    const bool do_bte,
++			    const bool reset_qp_y,
++			    const u32 pause_mode,
++			    const unsigned int tile_x,
++			    const unsigned int tile_y,
++			    const unsigned int ctb_col,
++			    const unsigned int ctb_row,
++			    const unsigned int slice_qp,
++			    const u32 slice_const)
++{
++	const unsigned int endx = s->col_bd[tile_x + 1] - 1;
++	const unsigned int endy = (pause_mode == PAUSE_MODE_WPP) ?
++		ctb_row : s->row_bd[tile_y + 1] - 1;
+ 
+-	int endx = de->pic_width_in_ctbs_y - 1;
+-	int endy = ctb_row;
+-
+-	u8 slice_w = ctb_to_slice_w_h(ctb_col, ctb_size,
+-				      s->sps.pic_width_in_luma_samples,
+-				      s->col_bd, s->num_tile_columns);
+-	u8 slice_h = ctb_to_slice_w_h(ctb_row, ctb_size,
+-				      s->sps.pic_height_in_luma_samples,
+-				      s->row_bd, s->num_tile_rows);
+-
+-	p1_apb_write(de, RPI_TILESTART, 0);
+-	p1_apb_write(de, RPI_TILEEND, endx + (endy << 16));
++	p1_apb_write(de, RPI_TILESTART,
++		     s->col_bd[tile_x] | (s->row_bd[tile_y] << 16));
++	p1_apb_write(de, RPI_TILEEND, endx | (endy << 16));
+ 
+ 	if (do_bte)
+-		p1_apb_write(de, RPI_BEGINTILEEND, endx + (endy << 16));
++		p1_apb_write(de, RPI_BEGINTILEEND, endx | (endy << 16));
+ 
+-	write_slice(de, s, slice_w,
+-		    ctb_row == de->pic_height_in_ctbs_y - 1 ?
+-							slice_h : ctb_size);
++	write_slice(de, s, slice_const, endx, endy);
+ 
+ 	if (reset_qp_y) {
+ 		unsigned int sps_qp_bd_offset =
+ 			6 * s->sps.bit_depth_luma_minus8;
+ 
+-		p1_apb_write(de, RPI_QP, sps_qp_bd_offset + s->slice_qp);
++		p1_apb_write(de, RPI_QP, sps_qp_bd_offset + slice_qp);
+ 	}
+ 
+ 	p1_apb_write(de, RPI_MODE,
+-		     ctb_row == de->pic_height_in_ctbs_y - 1 ?
+-							0x60001 : 0x20001);
+-	p1_apb_write(de, RPI_CONTROL, (ctb_col << 0) + (ctb_row << 16));
++		     pause_mode |
++			((endx == s->ctb_width - 1) << 17) |
++			((endy == s->ctb_height - 1) << 18));
++
++	p1_apb_write(de, RPI_CONTROL, (ctb_col << 0) | (ctb_row << 16));
++
++	de->entry_tile_x = tile_x;
++	de->entry_tile_y = tile_y;
++	de->entry_ctb_x = ctb_col;
++	de->entry_ctb_y = ctb_row;
++	de->entry_qp = slice_qp;
++	de->entry_slice = slice_const;
+ }
+ 
+ //////////////////////////////////////////////////////////////////////////////
+ // Wavefront mode
+ 
++static void wpp_pause(struct rpivid_dec_env *const de, int ctb_row)
++{
++	p1_apb_write(de, RPI_STATUS, (ctb_row << 18) | 0x25);
++	p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++	p1_apb_write(de, RPI_MODE,
++		     ctb_row == de->pic_height_in_ctbs_y - 1 ?
++							0x70000 : 0x30000);
++	p1_apb_write(de, RPI_CONTROL, (ctb_row << 16) + 2);
++}
++
++static void wpp_entry_fill(struct rpivid_dec_env *const de,
++			   const struct rpivid_dec_state *const s,
++			   const unsigned int last_y)
++{
++	const unsigned int last_x = s->ctb_width - 1;
++
++	while (de->entry_ctb_y < last_y) {
++		/* wpp_entry_x/y set by wpp_entry_point */
++		if (s->ctb_width > 2)
++			wpp_pause(de, de->entry_ctb_y);
++		p1_apb_write(de, RPI_STATUS,
++			     (de->entry_ctb_y << 18) | (last_x << 5) | 2);
++
++		/* if width == 1 then the saved state is the init one */
++		if (s->ctb_width == 2)
++			p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++		else
++			p1_apb_write(de, RPI_TRANSFER, PROB_RELOAD);
++
++		new_entry_point(de, s, false, true, PAUSE_MODE_WPP,
++				0, 0, 0, de->entry_ctb_y + 1,
++				de->entry_qp, de->entry_slice);
++	}
++}
++
++static void wpp_end_previous_slice(struct rpivid_dec_env *const de,
++				   const struct rpivid_dec_state *const s)
++{
++	wpp_entry_fill(de, s, s->prev_ctb_y);
++
++	if (de->entry_ctb_x < 2 &&
++	    (de->entry_ctb_y < s->start_ctb_y || s->start_ctb_x > 2) &&
++	    s->ctb_width > 2)
++		wpp_pause(de, s->prev_ctb_y);
++	p1_apb_write(de, RPI_STATUS,
++		     1 | (s->prev_ctb_x << 5) | (s->prev_ctb_y << 18));
++	if (s->start_ctb_x == 2 ||
++	    (s->ctb_width == 2 && de->entry_ctb_y < s->start_ctb_y))
++		p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++}
++
++/* Only main profile supported so WPP => !Tiles which makes some of the
++ * next chunk code simpler
++ */
+ static void wpp_decode_slice(struct rpivid_dec_env *const de,
+-			     const struct rpivid_dec_state *const s,
+-			     const struct v4l2_ctrl_hevc_slice_params *sh,
+-			     int ctb_addr_ts)
+-{
+-	int i, reset_qp_y = 1;
+-	int indep = !s->dependent_slice_segment_flag;
+-	int ctb_col = s->sh->slice_segment_addr % de->pic_width_in_ctbs_y;
++			     const struct rpivid_dec_state *const s)
++{
++	bool reset_qp_y = true;
++	const bool indep = !s->dependent_slice_segment_flag;
+ 
+-	if (ctb_addr_ts)
+-		wpp_end_previous_slice(de, s, ctb_addr_ts);
++	if (s->start_ts)
++		wpp_end_previous_slice(de, s);
+ 	pre_slice_decode(de, s);
+ 	write_bitstream(de, s);
+-	if (ctb_addr_ts == 0 || indep || de->pic_width_in_ctbs_y == 1)
++
++	if (!s->start_ts || indep || s->ctb_width == 1)
+ 		write_prob(de, s);
+-	else if (ctb_col == 0)
++	else if (!s->start_ctb_x)
+ 		p1_apb_write(de, RPI_TRANSFER, PROB_RELOAD);
+ 	else
+-		reset_qp_y = 0;
++		reset_qp_y = false;
++
+ 	program_slicecmds(de, s->slice_idx);
+ 	new_slice_segment(de, s);
+-	wpp_entry_point(de, s, indep, reset_qp_y, ctb_addr_ts);
++	new_entry_point(de, s, indep, reset_qp_y, PAUSE_MODE_WPP,
++			0, 0, s->start_ctb_x, s->start_ctb_y,
++			s->slice_qp, slice_reg_const(s));
+ 
+-	for (i = 0; i < s->sh->num_entry_point_offsets; i++) {
+-		int ctb_addr_rs = s->ctb_addr_ts_to_rs[ctb_addr_ts];
+-		int ctb_row = ctb_addr_rs / de->pic_width_in_ctbs_y;
+-		int last_x = de->pic_width_in_ctbs_y - 1;
++	if (s->frame_end) {
++		wpp_entry_fill(de, s, s->ctb_height - 1);
++
++		if (de->entry_ctb_x < 2 && s->ctb_width > 2)
++			wpp_pause(de, s->ctb_height - 1);
+ 
+-		if (de->pic_width_in_ctbs_y > 2)
+-			wpp_pause(de, ctb_row);
+ 		p1_apb_write(de, RPI_STATUS,
+-			     (ctb_row << 18) + (last_x << 5) + 2);
+-		if (de->pic_width_in_ctbs_y == 2)
+-			p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
+-		if (de->pic_width_in_ctbs_y == 1)
+-			write_prob(de, s);
+-		else
+-			p1_apb_write(de, RPI_TRANSFER, PROB_RELOAD);
+-		ctb_addr_ts += s->column_width[0];
+-		wpp_entry_point(de, s, 0, 1, ctb_addr_ts);
++			     1 | ((s->ctb_width - 1) << 5) |
++				((s->ctb_height - 1) << 18));
+ 	}
++
+ }
+ 
+ //////////////////////////////////////////////////////////////////////////////
+ // Tiles mode
+ 
++static void tile_entry_fill(struct rpivid_dec_env *const de,
++			    const struct rpivid_dec_state *const s,
++			    const unsigned int last_tile_x,
++			    const unsigned int last_tile_y)
++{
++	while (de->entry_tile_y < last_tile_y ||
++	       (de->entry_tile_y == last_tile_y &&
++		de->entry_tile_x < last_tile_x)) {
++		unsigned int t_x = de->entry_tile_x;
++		unsigned int t_y = de->entry_tile_y;
++		const unsigned int last_x = s->col_bd[t_x + 1] - 1;
++		const unsigned int last_y = s->row_bd[t_y + 1] - 1;
++
++		p1_apb_write(de, RPI_STATUS,
++			     2 | (last_x << 5) | (last_y << 18));
++		p1_apb_write(de, RPI_TRANSFER, PROB_RELOAD);
++
++		// Inc tile
++		if (++t_x >= s->tile_width) {
++			t_x = 0;
++			++t_y;
++		}
++
++		new_entry_point(de, s, false, true, PAUSE_MODE_TILE,
++				t_x, t_y, s->col_bd[t_x], s->row_bd[t_y],
++				de->entry_qp, de->entry_slice);
++	}
++}
++
++/*
++ * Write STATUS register with expected end CTU address of previous slice
++ */
++static void end_previous_slice(struct rpivid_dec_env *const de,
++			       const struct rpivid_dec_state *const s)
++{
++	tile_entry_fill(de, s,
++			ctb_to_tile_x(s, s->prev_ctb_x),
++			ctb_to_tile_y(s, s->prev_ctb_y));
++	p1_apb_write(de, RPI_STATUS,
++		     1 | (s->prev_ctb_x << 5) | (s->prev_ctb_y << 18));
++}
++
+ static void decode_slice(struct rpivid_dec_env *const de,
+-			 const struct rpivid_dec_state *const s,
+-			 const struct v4l2_ctrl_hevc_slice_params *const sh,
+-			 int ctb_addr_ts)
++			 const struct rpivid_dec_state *const s)
+ {
+-	int i, reset_qp_y;
++	bool reset_qp_y;
++	unsigned int tile_x = ctb_to_tile_x(s, s->start_ctb_x);
++	unsigned int tile_y = ctb_to_tile_y(s, s->start_ctb_y);
+ 
+-	if (ctb_addr_ts)
+-		end_previous_slice(de, s, ctb_addr_ts);
++	if (s->start_ts)
++		end_previous_slice(de, s);
+ 
+ 	pre_slice_decode(de, s);
+ 	write_bitstream(de, s);
+ 
+-#if DEBUG_TRACE_P1_CMD
+-	if (p1_z < 256) {
+-		v4l2_info(&de->ctx->dev->v4l2_dev,
+-			  "TS=%d, tile=%d/%d, dss=%d, flags=%#llx\n",
+-			  ctb_addr_ts, s->tile_id[ctb_addr_ts],
+-			  s->tile_id[ctb_addr_ts - 1],
+-			  s->dependent_slice_segment_flag, sh->flags);
+-	}
+-#endif
+-
+-	reset_qp_y = ctb_addr_ts == 0 ||
+-		   s->tile_id[ctb_addr_ts] != s->tile_id[ctb_addr_ts - 1] ||
+-		   !s->dependent_slice_segment_flag;
++	reset_qp_y = !s->start_ts ||
++		!s->dependent_slice_segment_flag ||
++		tile_x != ctb_to_tile_x(s, s->prev_ctb_x) ||
++		tile_y != ctb_to_tile_y(s, s->prev_ctb_y);
+ 	if (reset_qp_y)
+ 		write_prob(de, s);
+ 
+ 	program_slicecmds(de, s->slice_idx);
+ 	new_slice_segment(de, s);
+ 	new_entry_point(de, s, !s->dependent_slice_segment_flag, reset_qp_y,
+-			ctb_addr_ts);
+-
+-	for (i = 0; i < s->sh->num_entry_point_offsets; i++) {
+-		int ctb_addr_rs = s->ctb_addr_ts_to_rs[ctb_addr_ts];
+-		int ctb_col = ctb_addr_rs % de->pic_width_in_ctbs_y;
+-		int ctb_row = ctb_addr_rs / de->pic_width_in_ctbs_y;
+-		int tile_x = ctb_to_tile(ctb_col, s->col_bd,
+-					 s->num_tile_columns - 1);
+-		int tile_y =
+-			ctb_to_tile(ctb_row, s->row_bd, s->num_tile_rows - 1);
+-		int last_x = s->col_bd[tile_x + 1] - 1;
+-		int last_y = s->row_bd[tile_y + 1] - 1;
++			PAUSE_MODE_TILE,
++			tile_x, tile_y, s->start_ctb_x, s->start_ctb_y,
++			s->slice_qp, slice_reg_const(s));
+ 
++	/*
++	 * If this is the last slice then fill in the other tile entries
++	 * now, otherwise this will be done at the start of the next slice
++	 * when it will be known where this slice finishes
++	 */
++	if (s->frame_end) {
++		tile_entry_fill(de, s,
++				s->tile_width - 1,
++				s->tile_height - 1);
+ 		p1_apb_write(de, RPI_STATUS,
+-			     2 + (last_x << 5) + (last_y << 18));
+-		write_prob(de, s);
+-		ctb_addr_ts += s->column_width[tile_x] * s->row_height[tile_y];
+-		new_entry_point(de, s, 0, 1, ctb_addr_ts);
++			     1 | ((s->ctb_width - 1) << 5) |
++				((s->ctb_height - 1) << 18));
+ 	}
+ }
+ 
+@@ -1132,13 +1159,12 @@ static void decode_slice(struct rpivid_d
+ // Scaling factors
+ 
+ static void expand_scaling_list(const unsigned int size_id,
+-				const unsigned int matrix_id, u8 *const dst0,
++				u8 *const dst0,
+ 				const u8 *const src0, uint8_t dc)
+ {
+ 	u8 *d;
+ 	unsigned int x, y;
+ 
+-	// FIXME: matrix_id is unused ?
+ 	switch (size_id) {
+ 	case 0:
+ 		memcpy(dst0, src0, 16);
+@@ -1199,24 +1225,20 @@ static void populate_scaling_factors(con
+ 	unsigned int mid;
+ 
+ 	for (mid = 0; mid < 6; mid++)
+-		expand_scaling_list(0, mid,
+-				    de->scaling_factors +
++		expand_scaling_list(0, de->scaling_factors +
+ 					    scaling_factor_offsets[0][mid],
+ 				    sl->scaling_list_4x4[mid], 0);
+ 	for (mid = 0; mid < 6; mid++)
+-		expand_scaling_list(1, mid,
+-				    de->scaling_factors +
++		expand_scaling_list(1, de->scaling_factors +
+ 					    scaling_factor_offsets[1][mid],
+ 				    sl->scaling_list_8x8[mid], 0);
+ 	for (mid = 0; mid < 6; mid++)
+-		expand_scaling_list(2, mid,
+-				    de->scaling_factors +
++		expand_scaling_list(2, de->scaling_factors +
+ 					    scaling_factor_offsets[2][mid],
+ 				    sl->scaling_list_16x16[mid],
+ 				    sl->scaling_list_dc_coef_16x16[mid]);
+-	for (mid = 0; mid < 2; mid += 1)
+-		expand_scaling_list(3, mid,
+-				    de->scaling_factors +
++	for (mid = 0; mid < 2; mid++)
++		expand_scaling_list(3, de->scaling_factors +
+ 					    scaling_factor_offsets[3][mid],
+ 				    sl->scaling_list_32x32[mid],
+ 				    sl->scaling_list_dc_coef_32x32[mid]);
+@@ -1228,8 +1250,6 @@ static void free_ps_info(struct rpivid_d
+ 	s->ctb_addr_rs_to_ts = NULL;
+ 	kfree(s->ctb_addr_ts_to_rs);
+ 	s->ctb_addr_ts_to_rs = NULL;
+-	kfree(s->tile_id);
+-	s->tile_id = NULL;
+ 
+ 	kfree(s->col_bd);
+ 	s->col_bd = NULL;
+@@ -1237,10 +1257,52 @@ static void free_ps_info(struct rpivid_d
+ 	s->row_bd = NULL;
+ }
+ 
++static unsigned int tile_width(const struct rpivid_dec_state *const s,
++			       const unsigned int t_x)
++{
++	return s->col_bd[t_x + 1] - s->col_bd[t_x];
++}
++
++static unsigned int tile_height(const struct rpivid_dec_state *const s,
++				const unsigned int t_y)
++{
++	return s->row_bd[t_y + 1] - s->row_bd[t_y];
++}
++
++static void fill_rs_to_ts(struct rpivid_dec_state *const s)
++{
++	unsigned int ts = 0;
++	unsigned int t_y;
++	unsigned int tr_rs = 0;
++
++	for (t_y = 0; t_y != s->tile_height; ++t_y) {
++		const unsigned int t_h = tile_height(s, t_y);
++		unsigned int t_x;
++		unsigned int tc_rs = tr_rs;
++
++		for (t_x = 0; t_x != s->tile_width; ++t_x) {
++			const unsigned int t_w = tile_width(s, t_x);
++			unsigned int y;
++			unsigned int rs = tc_rs;
++
++			for (y = 0; y != t_h; ++y) {
++				unsigned int x;
++
++				for (x = 0; x != t_w; ++x) {
++					s->ctb_addr_rs_to_ts[rs + x] = ts;
++					s->ctb_addr_ts_to_rs[ts] = rs + x;
++					++ts;
++				}
++				rs += s->ctb_width;
++			}
++			tc_rs += t_w;
++		}
++		tr_rs += t_h * s->ctb_width;
++	}
++}
++
+ static int updated_ps(struct rpivid_dec_state *const s)
+ {
+-	unsigned int ctb_addr_rs;
+-	int j, x, y, tile_id;
+ 	unsigned int i;
+ 
+ 	free_ps_info(s);
+@@ -1259,104 +1321,49 @@ static int updated_ps(struct rpivid_dec_
+ 
+ 	// Inferred parameters
+ 
++	s->ctb_addr_rs_to_ts = kmalloc_array(s->ctb_size,
++					     sizeof(*s->ctb_addr_rs_to_ts),
++					     GFP_KERNEL);
++	s->ctb_addr_ts_to_rs = kmalloc_array(s->ctb_size,
++					     sizeof(*s->ctb_addr_ts_to_rs),
++					     GFP_KERNEL);
++
+ 	if (!(s->pps.flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
+-		s->num_tile_columns = 1;
+-		s->num_tile_rows = 1;
+-		s->column_width[0] = s->ctb_width;
+-		s->row_height[0] = s->ctb_height;
++		s->tile_width = 1;
++		s->tile_height = 1;
+ 	} else {
+-		s->num_tile_columns = s->pps.num_tile_columns_minus1 + 1;
+-		s->num_tile_rows = s->pps.num_tile_rows_minus1 + 1;
+-		for (i = 0; i < s->num_tile_columns; ++i)
+-			s->column_width[i] = s->pps.column_width_minus1[i] + 1;
+-		for (i = 0; i < s->num_tile_rows; ++i)
+-			s->row_height[i] = s->pps.row_height_minus1[i] + 1;
++		s->tile_width = s->pps.num_tile_columns_minus1 + 1;
++		s->tile_height = s->pps.num_tile_rows_minus1 + 1;
+ 	}
+ 
+-	s->col_bd = kmalloc((s->num_tile_columns + 1) * sizeof(*s->col_bd),
++	s->col_bd = kmalloc((s->tile_width + 1) * sizeof(*s->col_bd),
+ 			    GFP_KERNEL);
+-	s->row_bd = kmalloc((s->num_tile_rows + 1) * sizeof(*s->row_bd),
++	s->row_bd = kmalloc((s->tile_height + 1) * sizeof(*s->row_bd),
+ 			    GFP_KERNEL);
+ 
+ 	s->col_bd[0] = 0;
+-	for (i = 0; i < s->num_tile_columns; i++)
+-		s->col_bd[i + 1] = s->col_bd[i] + s->column_width[i];
++	for (i = 1; i < s->tile_width; i++)
++		s->col_bd[i] = s->col_bd[i - 1] +
++			s->pps.column_width_minus1[i - 1] + 1;
++	s->col_bd[s->tile_width] = s->ctb_width;
+ 
+ 	s->row_bd[0] = 0;
+-	for (i = 0; i < s->num_tile_rows; i++)
+-		s->row_bd[i + 1] = s->row_bd[i] + s->row_height[i];
++	for (i = 1; i < s->tile_height; i++)
++		s->row_bd[i] = s->row_bd[i - 1] +
++			s->pps.row_height_minus1[i - 1] + 1;
++	s->row_bd[s->tile_height] = s->ctb_height;
+ 
+-	s->ctb_addr_rs_to_ts = kmalloc_array(s->ctb_size,
+-					     sizeof(*s->ctb_addr_rs_to_ts),
+-					     GFP_KERNEL);
+-	s->ctb_addr_ts_to_rs = kmalloc_array(s->ctb_size,
+-					     sizeof(*s->ctb_addr_ts_to_rs),
+-					     GFP_KERNEL);
+-	s->tile_id = kmalloc_array(s->ctb_size, sizeof(*s->tile_id),
+-				   GFP_KERNEL);
+-
+-	for (ctb_addr_rs = 0; ctb_addr_rs < s->ctb_size; ctb_addr_rs++) {
+-		int tb_x = ctb_addr_rs % s->ctb_width;
+-		int tb_y = ctb_addr_rs / s->ctb_width;
+-		int tile_x = 0;
+-		int tile_y = 0;
+-		int val = 0;
+-
+-		for (i = 0; i < s->num_tile_columns; i++) {
+-			if (tb_x < s->col_bd[i + 1]) {
+-				tile_x = i;
+-				break;
+-			}
+-		}
+-
+-		for (i = 0; i < s->num_tile_rows; i++) {
+-			if (tb_y < s->row_bd[i + 1]) {
+-				tile_y = i;
+-				break;
+-			}
+-		}
+-
+-		for (i = 0; i < tile_x; i++)
+-			val += s->row_height[tile_y] * s->column_width[i];
+-		for (i = 0; i < tile_y; i++)
+-			val += s->ctb_width * s->row_height[i];
+-
+-		val += (tb_y - s->row_bd[tile_y]) * s->column_width[tile_x] +
+-		       tb_x - s->col_bd[tile_x];
+-
+-		s->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
+-		s->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
+-	}
+-
+-	for (j = 0, tile_id = 0; j < s->num_tile_rows; j++)
+-		for (i = 0; i < s->num_tile_columns; i++, tile_id++)
+-			for (y = s->row_bd[j]; y < s->row_bd[j + 1]; y++)
+-				for (x = s->col_bd[i];
+-				     x < s->col_bd[i + 1];
+-				     x++)
+-					s->tile_id[s->ctb_addr_rs_to_ts
+-							   [y * s->ctb_width +
+-							    x]] = tile_id;
++	fill_rs_to_ts(s);
+ 
+ 	return 0;
+ }
+ 
+-static int frame_end(struct rpivid_dev *const dev,
+-		     struct rpivid_dec_env *const de,
+-		     const struct rpivid_dec_state *const s)
+-{
+-	const unsigned int last_x = s->col_bd[s->num_tile_columns] - 1;
+-	const unsigned int last_y = s->row_bd[s->num_tile_rows] - 1;
+-	size_t cmd_size;
+-
+-	if (s->pps.flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED) {
+-		if (de->wpp_entry_x < 2 && de->pic_width_in_ctbs_y > 2)
+-			wpp_pause(de, last_y);
+-	}
+-	p1_apb_write(de, RPI_STATUS, 1 + (last_x << 5) + (last_y << 18));
+-
++static int write_cmd_buffer(struct rpivid_dev *const dev,
++			    struct rpivid_dec_env *const de,
++			    const struct rpivid_dec_state *const s)
++{
+ 	// Copy commands out to dma buf
+-	cmd_size = de->cmd_len * sizeof(de->cmd_fifo[0]);
++	const size_t cmd_size = de->cmd_len * sizeof(de->cmd_fifo[0]);
+ 
+ 	if (!de->cmd_copy_gptr->ptr || cmd_size > de->cmd_copy_gptr->size) {
+ 		size_t cmd_alloc = round_up_size(cmd_size);
+@@ -1521,18 +1528,19 @@ static void rpivid_h265_setup(struct rpi
+ 	struct rpivid_q_aux *dpb_q_aux[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ 	struct rpivid_dec_state *const s = ctx->state;
+ 	struct vb2_queue *vq;
+-	struct rpivid_dec_env *de;
+-	int ctb_addr_ts;
++	struct rpivid_dec_env *de = ctx->dec0;
++	unsigned int prev_rs;
+ 	unsigned int i;
+ 	int use_aux;
+ 	bool slice_temporal_mvp;
+ 
++	xtrace_in(dev, de);
++
+ 	pred_weight_table = &sh->pred_weight_table;
+ 
+ 	s->frame_end =
+ 		((run->src->flags & V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF) == 0);
+ 
+-	de = ctx->dec0;
+ 	slice_temporal_mvp = (sh->flags &
+ 		   V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_TEMPORAL_MVP_ENABLED);
+ 
+@@ -1662,6 +1670,13 @@ static void rpivid_h265_setup(struct rpi
+ 				  s->sps.pic_height_in_luma_samples);
+ 			goto fail;
+ 		}
++		if ((s->tile_width != 1 || s->tile_height != 1) &&
++		    (s->pps.flags &
++		     V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED)) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Tiles + WPP not supported\n");
++			goto fail;
++		}
+ 
+ 		// Fill in ref planes with our address s.t. if we mess
+ 		// up refs somehow then we still have a valid address
+@@ -1760,15 +1775,24 @@ static void rpivid_h265_setup(struct rpi
+ 	if (s->sps.flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED)
+ 		populate_scaling_factors(run, de, s);
+ 
+-	ctb_addr_ts = s->ctb_addr_rs_to_ts[sh->slice_segment_addr];
++	// Calc all the random coord info to avoid repeated conversion in/out
++	s->start_ts = s->ctb_addr_rs_to_ts[sh->slice_segment_addr];
++	s->start_ctb_x = sh->slice_segment_addr % de->pic_width_in_ctbs_y;
++	s->start_ctb_y = sh->slice_segment_addr / de->pic_width_in_ctbs_y;
++	// Last CTB of previous slice
++	prev_rs = !s->start_ts ? 0 : s->ctb_addr_ts_to_rs[s->start_ts - 1];
++	s->prev_ctb_x = prev_rs % de->pic_width_in_ctbs_y;
++	s->prev_ctb_y = prev_rs / de->pic_width_in_ctbs_y;
+ 
+ 	if ((s->pps.flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED))
+-		wpp_decode_slice(de, s, sh, ctb_addr_ts);
++		wpp_decode_slice(de, s);
+ 	else
+-		decode_slice(de, s, sh, ctb_addr_ts);
++		decode_slice(de, s);
+ 
+-	if (!s->frame_end)
++	if (!s->frame_end) {
++		xtrace_ok(dev, de);
+ 		return;
++	}
+ 
+ 	// Frame end
+ 	memset(dpb_q_aux, 0,
+@@ -1776,8 +1800,9 @@ static void rpivid_h265_setup(struct rpi
+ 	/*
+ 	 * Need Aux ents for all (ref) DPB ents if temporal MV could
+ 	 * be enabled for any pic
+-	 * ** At the moment we have aux ents for all pics whether or not
+-	 *    they are ref
++	 * ** At the moment we create aux ents for all pics whether or not
++	 *    they are ref - they should then be discarded by the DPB-aux
++	 *    garbage collection code
+ 	 */
+ 	use_aux = ((s->sps.flags &
+ 		  V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED) != 0);
+@@ -1795,7 +1820,7 @@ static void rpivid_h265_setup(struct rpi
+ 	}
+ 
+ 	//        v4l2_info(&dev->v4l2_dev, "rpivid_h265_end of frame\n");
+-	if (frame_end(dev, de, s))
++	if (write_cmd_buffer(dev, de, s))
+ 		goto fail;
+ 
+ 	for (i = 0; i < sh->num_active_dpb_entries; ++i) {
+@@ -1876,6 +1901,7 @@ static void rpivid_h265_setup(struct rpi
+ 	}
+ 
+ 	de->state = RPIVID_DECODE_PHASE1;
++	xtrace_ok(dev, de);
+ 	return;
+ 
+ fail:
+@@ -1883,6 +1909,7 @@ fail:
+ 		// Actual error reporting happens in Trigger
+ 		de->state = s->frame_end ? RPIVID_DECODE_ERROR_DONE :
+ 					   RPIVID_DECODE_ERROR_CONTINUE;
++	xtrace_fail(dev, de);
+ }
+ 
+ //////////////////////////////////////////////////////////////////////////////
+@@ -2210,6 +2237,10 @@ static int rpivid_h265_start(struct rpiv
+ 	size_t pu_alloc;
+ 	size_t coeff_alloc;
+ 
++#if DEBUG_TRACE_P1_CMD
++	p1_z = 0;
++#endif
++
+ 	// Generate a sanitised WxH for memory alloc
+ 	// Assume HD if unset
+ 	if (w == 0)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0394-media-rpivid-Convert-to-MPLANE.patch b/target/linux/bcm27xx/patches-5.15/950-0394-media-rpivid-Convert-to-MPLANE.patch
new file mode 100644
index 0000000000..1ac0a03905
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0394-media-rpivid-Convert-to-MPLANE.patch
@@ -0,0 +1,329 @@
+From 103259e6629a419bc07d6348dd1544213daac45b Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 11 Mar 2021 12:51:00 +0000
+Subject: [PATCH] media: rpivid: Convert to MPLANE
+
+Use multi-planar interface rather than single plane interface. This
+allows dmabufs holding compressed data to be resized.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.c       |  2 +-
+ drivers/staging/media/rpivid/rpivid.h       |  4 +-
+ drivers/staging/media/rpivid/rpivid_h265.c  |  9 ++-
+ drivers/staging/media/rpivid/rpivid_video.c | 88 ++++++++++-----------
+ drivers/staging/media/rpivid/rpivid_video.h |  4 +-
+ 5 files changed, 52 insertions(+), 55 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.c
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -283,7 +283,7 @@ static const struct video_device rpivid_
+ 	.ioctl_ops	= &rpivid_ioctl_ops,
+ 	.minor		= -1,
+ 	.release	= video_device_release_empty,
+-	.device_caps	= V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
++	.device_caps	= V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING,
+ };
+ 
+ static const struct v4l2_m2m_ops rpivid_m2m_ops = {
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -85,8 +85,8 @@ struct rpivid_ctx {
+ 	struct v4l2_fh			fh;
+ 	struct rpivid_dev		*dev;
+ 
+-	struct v4l2_pix_format		src_fmt;
+-	struct v4l2_pix_format		dst_fmt;
++	struct v4l2_pix_format_mplane	src_fmt;
++	struct v4l2_pix_format_mplane	dst_fmt;
+ 	int dst_fmt_set;
+ 	// fatal_err is set if an error has occurred s.t. decode cannot
+ 	// continue (such as running out of CMA)
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -1613,7 +1613,7 @@ static void rpivid_h265_setup(struct rpi
+ 		de->cmd_copy_gptr = ctx->cmdbufs + 0;
+ 
+ 		de->frame_c_offset = ctx->dst_fmt.height * 128;
+-		de->frame_stride = ctx->dst_fmt.bytesperline * 128;
++		de->frame_stride = ctx->dst_fmt.plane_fmt[0].bytesperline * 128;
+ 		de->frame_addr =
+ 			vb2_dma_contig_plane_dma_addr(&run->dst->vb2_buf, 0);
+ 		de->frame_aux = NULL;
+@@ -1654,11 +1654,11 @@ static void rpivid_h265_setup(struct rpi
+ 			goto fail;
+ 		}
+ 		if (run->dst->planes[0].length <
+-		    ctx->dst_fmt.sizeimage) {
++		    ctx->dst_fmt.plane_fmt[0].sizeimage) {
+ 			v4l2_warn(&dev->v4l2_dev,
+ 				  "Capture plane[0] length (%d) < sizeimage (%d)\n",
+ 				  run->dst->planes[0].length,
+-				  ctx->dst_fmt.sizeimage);
++				  ctx->dst_fmt.plane_fmt[0].sizeimage);
+ 			goto fail;
+ 		}
+ 
+@@ -1812,7 +1812,8 @@ static void rpivid_h265_setup(struct rpi
+ 	// slices. If this changes we will need idx mapping code.
+ 	// Uses sh so here rather than trigger
+ 
+-	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
++	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
++			     V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
+ 
+ 	if (!vq) {
+ 		v4l2_err(&dev->v4l2_dev, "VQ gone!\n");
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -42,25 +42,27 @@ static inline unsigned int constrain2x(u
+ 			(x > y * 2) ? y : x;
+ }
+ 
+-int rpivid_prepare_src_format(struct v4l2_pix_format *pix_fmt)
++int rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt)
+ {
+ 	if (pix_fmt->pixelformat != V4L2_PIX_FMT_HEVC_SLICE)
+ 		return -EINVAL;
+ 
+ 	/* Zero bytes per line for encoded source. */
+-	pix_fmt->bytesperline = 0;
++	pix_fmt->plane_fmt[0].bytesperline = 0;
+ 	/* Choose some minimum size since this can't be 0 */
+-	pix_fmt->sizeimage = max_t(u32, SZ_1K, pix_fmt->sizeimage);
++	pix_fmt->plane_fmt[0].sizeimage = max_t(u32, SZ_1K,
++						pix_fmt->plane_fmt[0].sizeimage);
++	pix_fmt->num_planes = 1;
+ 	pix_fmt->field = V4L2_FIELD_NONE;
+ 	return 0;
+ }
+ 
+-int rpivid_prepare_dst_format(struct v4l2_pix_format *pix_fmt)
++int rpivid_prepare_dst_format(struct v4l2_pix_format_mplane *pix_fmt)
+ {
+ 	unsigned int width = pix_fmt->width;
+ 	unsigned int height = pix_fmt->height;
+-	unsigned int sizeimage = pix_fmt->sizeimage;
+-	unsigned int bytesperline = pix_fmt->bytesperline;
++	unsigned int sizeimage = pix_fmt->plane_fmt[0].sizeimage;
++	unsigned int bytesperline = pix_fmt->plane_fmt[0].bytesperline;
+ 
+ 	switch (pix_fmt->pixelformat) {
+ 	/* For column formats set bytesperline to column height (stride2) */
+@@ -112,8 +114,9 @@ int rpivid_prepare_dst_format(struct v4l
+ 	pix_fmt->height = height;
+ 
+ 	pix_fmt->field = V4L2_FIELD_NONE;
+-	pix_fmt->bytesperline = bytesperline;
+-	pix_fmt->sizeimage = sizeimage;
++	pix_fmt->plane_fmt[0].bytesperline = bytesperline;
++	pix_fmt->plane_fmt[0].sizeimage = sizeimage;
++	pix_fmt->num_planes = 1;
+ 	return 0;
+ }
+ 
+@@ -222,12 +225,12 @@ static u32 pixelformat_from_sps(const st
+ 	return pf;
+ }
+ 
+-static struct v4l2_pix_format
++static struct v4l2_pix_format_mplane
+ rpivid_hevc_default_dst_fmt(struct rpivid_ctx * const ctx)
+ {
+ 	const struct v4l2_ctrl_hevc_sps * const sps =
+ 		rpivid_find_control_data(ctx, V4L2_CID_MPEG_VIDEO_HEVC_SPS);
+-	struct v4l2_pix_format pix_fmt = {
++	struct v4l2_pix_format_mplane pix_fmt = {
+ 		.width = sps->pic_width_in_luma_samples,
+ 		.height = sps->pic_height_in_luma_samples,
+ 		.pixelformat = pixelformat_from_sps(sps, 0)
+@@ -267,7 +270,7 @@ static int rpivid_g_fmt_vid_cap(struct f
+ 
+ 	if (!ctx->dst_fmt_set)
+ 		ctx->dst_fmt = rpivid_hevc_default_dst_fmt(ctx);
+-	f->fmt.pix = ctx->dst_fmt;
++	f->fmt.pix_mp = ctx->dst_fmt;
+ 	return 0;
+ }
+ 
+@@ -276,12 +279,12 @@ static int rpivid_g_fmt_vid_out(struct f
+ {
+ 	struct rpivid_ctx *ctx = rpivid_file2ctx(file);
+ 
+-	f->fmt.pix = ctx->src_fmt;
++	f->fmt.pix_mp = ctx->src_fmt;
+ 	return 0;
+ }
+ 
+-static inline void copy_color(struct v4l2_pix_format *d,
+-			      const struct v4l2_pix_format *s)
++static inline void copy_color(struct v4l2_pix_format_mplane *d,
++			      const struct v4l2_pix_format_mplane *s)
+ {
+ 	d->colorspace   = s->colorspace;
+ 	d->xfer_func    = s->xfer_func;
+@@ -298,12 +301,8 @@ static int rpivid_try_fmt_vid_cap(struct
+ 	u32 pixelformat;
+ 	int i;
+ 
+-	/* Reject format types we don't support */
+-	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+-		return -EINVAL;
+-
+ 	for (i = 0; (pixelformat = pixelformat_from_sps(sps, i)) != 0; i++) {
+-		if (f->fmt.pix.pixelformat == pixelformat)
++		if (f->fmt.pix_mp.pixelformat == pixelformat)
+ 			break;
+ 	}
+ 
+@@ -317,23 +316,20 @@ static int rpivid_try_fmt_vid_cap(struct
+ 
+ 	// We don't have any way of finding out colourspace so believe
+ 	// anything we are told - take anything set in src as a default
+-	if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
+-		copy_color(&f->fmt.pix, &ctx->src_fmt);
++	if (f->fmt.pix_mp.colorspace == V4L2_COLORSPACE_DEFAULT)
++		copy_color(&f->fmt.pix_mp, &ctx->src_fmt);
+ 
+-	f->fmt.pix.pixelformat = pixelformat;
+-	return rpivid_prepare_dst_format(&f->fmt.pix);
++	f->fmt.pix_mp.pixelformat = pixelformat;
++	return rpivid_prepare_dst_format(&f->fmt.pix_mp);
+ }
+ 
+ static int rpivid_try_fmt_vid_out(struct file *file, void *priv,
+ 				  struct v4l2_format *f)
+ {
+-	if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+-		return -EINVAL;
+-
+-	if (rpivid_prepare_src_format(&f->fmt.pix)) {
++	if (rpivid_prepare_src_format(&f->fmt.pix_mp)) {
+ 		// Set default src format
+-		f->fmt.pix.pixelformat = RPIVID_SRC_PIXELFORMAT_DEFAULT;
+-		rpivid_prepare_src_format(&f->fmt.pix);
++		f->fmt.pix_mp.pixelformat = RPIVID_SRC_PIXELFORMAT_DEFAULT;
++		rpivid_prepare_src_format(&f->fmt.pix_mp);
+ 	}
+ 	return 0;
+ }
+@@ -353,7 +349,7 @@ static int rpivid_s_fmt_vid_cap(struct f
+ 	if (ret)
+ 		return ret;
+ 
+-	ctx->dst_fmt = f->fmt.pix;
++	ctx->dst_fmt = f->fmt.pix_mp;
+ 	ctx->dst_fmt_set = 1;
+ 
+ 	return 0;
+@@ -374,14 +370,14 @@ static int rpivid_s_fmt_vid_out(struct f
+ 	if (ret)
+ 		return ret;
+ 
+-	ctx->src_fmt = f->fmt.pix;
++	ctx->src_fmt = f->fmt.pix_mp;
+ 	ctx->dst_fmt_set = 0;  // Setting src invalidates dst
+ 
+ 	vq->subsystem_flags |=
+ 		VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
+ 
+ 	/* Propagate colorspace information to capture. */
+-	copy_color(&ctx->dst_fmt, &f->fmt.pix);
++	copy_color(&ctx->dst_fmt, &f->fmt.pix_mp);
+ 	return 0;
+ }
+ 
+@@ -389,14 +385,14 @@ const struct v4l2_ioctl_ops rpivid_ioctl
+ 	.vidioc_querycap		= rpivid_querycap,
+ 
+ 	.vidioc_enum_fmt_vid_cap	= rpivid_enum_fmt_vid_cap,
+-	.vidioc_g_fmt_vid_cap		= rpivid_g_fmt_vid_cap,
+-	.vidioc_try_fmt_vid_cap		= rpivid_try_fmt_vid_cap,
+-	.vidioc_s_fmt_vid_cap		= rpivid_s_fmt_vid_cap,
++	.vidioc_g_fmt_vid_cap_mplane	= rpivid_g_fmt_vid_cap,
++	.vidioc_try_fmt_vid_cap_mplane	= rpivid_try_fmt_vid_cap,
++	.vidioc_s_fmt_vid_cap_mplane	= rpivid_s_fmt_vid_cap,
+ 
+ 	.vidioc_enum_fmt_vid_out	= rpivid_enum_fmt_vid_out,
+-	.vidioc_g_fmt_vid_out		= rpivid_g_fmt_vid_out,
+-	.vidioc_try_fmt_vid_out		= rpivid_try_fmt_vid_out,
+-	.vidioc_s_fmt_vid_out		= rpivid_s_fmt_vid_out,
++	.vidioc_g_fmt_vid_out_mplane	= rpivid_g_fmt_vid_out,
++	.vidioc_try_fmt_vid_out_mplane	= rpivid_try_fmt_vid_out,
++	.vidioc_s_fmt_vid_out_mplane	= rpivid_s_fmt_vid_out,
+ 
+ 	.vidioc_reqbufs			= v4l2_m2m_ioctl_reqbufs,
+ 	.vidioc_querybuf		= v4l2_m2m_ioctl_querybuf,
+@@ -421,7 +417,7 @@ static int rpivid_queue_setup(struct vb2
+ 			      struct device *alloc_devs[])
+ {
+ 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
+-	struct v4l2_pix_format *pix_fmt;
++	struct v4l2_pix_format_mplane *pix_fmt;
+ 
+ 	if (V4L2_TYPE_IS_OUTPUT(vq->type))
+ 		pix_fmt = &ctx->src_fmt;
+@@ -429,10 +425,10 @@ static int rpivid_queue_setup(struct vb2
+ 		pix_fmt = &ctx->dst_fmt;
+ 
+ 	if (*nplanes) {
+-		if (sizes[0] < pix_fmt->sizeimage)
++		if (sizes[0] < pix_fmt->plane_fmt[0].sizeimage)
+ 			return -EINVAL;
+ 	} else {
+-		sizes[0] = pix_fmt->sizeimage;
++		sizes[0] = pix_fmt->plane_fmt[0].sizeimage;
+ 		*nplanes = 1;
+ 	}
+ 
+@@ -471,17 +467,17 @@ static int rpivid_buf_prepare(struct vb2
+ {
+ 	struct vb2_queue *vq = vb->vb2_queue;
+ 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
+-	struct v4l2_pix_format *pix_fmt;
++	struct v4l2_pix_format_mplane *pix_fmt;
+ 
+ 	if (V4L2_TYPE_IS_OUTPUT(vq->type))
+ 		pix_fmt = &ctx->src_fmt;
+ 	else
+ 		pix_fmt = &ctx->dst_fmt;
+ 
+-	if (vb2_plane_size(vb, 0) < pix_fmt->sizeimage)
++	if (vb2_plane_size(vb, 0) < pix_fmt->plane_fmt[0].sizeimage)
+ 		return -EINVAL;
+ 
+-	vb2_set_plane_payload(vb, 0, pix_fmt->sizeimage);
++	vb2_set_plane_payload(vb, 0, pix_fmt->plane_fmt[0].sizeimage);
+ 
+ 	return 0;
+ }
+@@ -567,7 +563,7 @@ int rpivid_queue_init(void *priv, struct
+ 	struct rpivid_ctx *ctx = priv;
+ 	int ret;
+ 
+-	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
++	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
+ 	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ 	src_vq->drv_priv = ctx;
+ 	src_vq->buf_struct_size = sizeof(struct rpivid_buffer);
+@@ -584,7 +580,7 @@ int rpivid_queue_init(void *priv, struct
+ 	if (ret)
+ 		return ret;
+ 
+-	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ 	dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ 	dst_vq->drv_priv = ctx;
+ 	dst_vq->buf_struct_size = sizeof(struct rpivid_buffer);
+--- a/drivers/staging/media/rpivid/rpivid_video.h
++++ b/drivers/staging/media/rpivid/rpivid_video.h
+@@ -24,7 +24,7 @@ extern const struct v4l2_ioctl_ops rpivi
+ 
+ int rpivid_queue_init(void *priv, struct vb2_queue *src_vq,
+ 		      struct vb2_queue *dst_vq);
+-int rpivid_prepare_src_format(struct v4l2_pix_format *pix_fmt);
+-int rpivid_prepare_dst_format(struct v4l2_pix_format *pix_fmt);
++int rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt);
++int rpivid_prepare_dst_format(struct v4l2_pix_format_mplane *pix_fmt);
+ 
+ #endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0395-media-rpivid-Add-an-enable-count-to-irq-claim-Qs.patch b/target/linux/bcm27xx/patches-5.15/950-0395-media-rpivid-Add-an-enable-count-to-irq-claim-Qs.patch
new file mode 100644
index 0000000000..b404c733f7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0395-media-rpivid-Add-an-enable-count-to-irq-claim-Qs.patch
@@ -0,0 +1,234 @@
+From d9419b25780a1fe58421edb49637a42ba8b83800 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 11 Mar 2021 18:43:15 +0000
+Subject: [PATCH] media: rpivid: Add an enable count to irq claim Qs
+
+Add an enable count to the irq Q structures to allow the irq logic to
+block further callbacks if resources associated with the irq are not
+yet available.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.h    |   2 +
+ drivers/staging/media/rpivid/rpivid_hw.c | 118 +++++++++++++++--------
+ drivers/staging/media/rpivid/rpivid_hw.h |   3 +
+ 3 files changed, 85 insertions(+), 38 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -151,6 +151,8 @@ struct rpivid_hw_irq_ctrl {
+ 	struct rpivid_hw_irq_ent *irq;
+ 	/* Non-zero => do not start a new job - outer layer sched pending */
+ 	int no_sched;
++	/* Enable count. -1 always OK, 0 do not sched, +ve shed & count down */
++	int enable;
+ 	/* Thread CB requested */
+ 	bool thread_reqed;
+ };
+--- a/drivers/staging/media/rpivid/rpivid_hw.c
++++ b/drivers/staging/media/rpivid/rpivid_hw.c
+@@ -42,35 +42,62 @@ static void pre_irq(struct rpivid_dev *d
+ 	ient->cb = cb;
+ 	ient->v = v;
+ 
+-	// Not sure this lock is actually required
+ 	spin_lock_irqsave(&ictl->lock, flags);
+ 	ictl->irq = ient;
++	ictl->no_sched++;
+ 	spin_unlock_irqrestore(&ictl->lock, flags);
+ }
+ 
+-static void sched_claim(struct rpivid_dev * const dev,
+-			struct rpivid_hw_irq_ctrl * const ictl)
++/* Should be called from inside ictl->lock */
++static inline bool sched_enabled(const struct rpivid_hw_irq_ctrl * const ictl)
+ {
+-	for (;;) {
+-		struct rpivid_hw_irq_ent *ient = NULL;
+-		unsigned long flags;
++	return ictl->no_sched <= 0 && ictl->enable;
++}
+ 
+-		spin_lock_irqsave(&ictl->lock, flags);
++/* Should be called from inside ictl->lock & after checking sched_enabled() */
++static inline void set_claimed(struct rpivid_hw_irq_ctrl * const ictl)
++{
++	if (ictl->enable > 0)
++		--ictl->enable;
++	ictl->no_sched = 1;
++}
+ 
+-		if (--ictl->no_sched <= 0) {
+-			ient = ictl->claim;
+-			if (!ictl->irq && ient) {
+-				ictl->claim = ient->next;
+-				ictl->no_sched = 1;
+-			}
+-		}
++/* Should be called from inside ictl->lock */
++static struct rpivid_hw_irq_ent *get_sched(struct rpivid_hw_irq_ctrl * const ictl)
++{
++	struct rpivid_hw_irq_ent *ient;
+ 
+-		spin_unlock_irqrestore(&ictl->lock, flags);
++	if (!sched_enabled(ictl))
++		return NULL;
++
++	ient = ictl->claim;
++	if (!ient)
++		return NULL;
++	ictl->claim = ient->next;
++
++	set_claimed(ictl);
++	return ient;
++}
+ 
+-		if (!ient)
+-			break;
++/* Run a callback & check to see if there is anything else to run */
++static void sched_cb(struct rpivid_dev * const dev,
++		     struct rpivid_hw_irq_ctrl * const ictl,
++		     struct rpivid_hw_irq_ent *ient)
++{
++	while (ient) {
++		unsigned long flags;
+ 
+ 		ient->cb(dev, ient->v);
++
++		spin_lock_irqsave(&ictl->lock, flags);
++
++		/* Always dec no_sched after cb exec - must have been set
++		 * on entry to cb
++		 */
++		--ictl->no_sched;
++		ient = get_sched(ictl);
++
++		spin_unlock_irqrestore(&ictl->lock, flags);
+ 	}
+ }
+ 
+@@ -84,7 +111,7 @@ static void pre_thread(struct rpivid_dev
+ 	ient->v = v;
+ 	ictl->irq = ient;
+ 	ictl->thread_reqed = true;
+-	ictl->no_sched++;
++	ictl->no_sched++;	/* This is unwound in do_thread */
+ }
+ 
+ // Called in irq context
+@@ -96,17 +123,10 @@ static void do_irq(struct rpivid_dev * c
+ 
+ 	spin_lock_irqsave(&ictl->lock, flags);
+ 	ient = ictl->irq;
+-	if (ient) {
+-		ictl->no_sched++;
+-		ictl->irq = NULL;
+-	}
++	ictl->irq = NULL;
+ 	spin_unlock_irqrestore(&ictl->lock, flags);
+ 
+-	if (ient) {
+-		ient->cb(dev, ient->v);
+-
+-		sched_claim(dev, ictl);
+-	}
++	sched_cb(dev, ictl, ient);
+ }
+ 
+ static void do_claim(struct rpivid_dev * const dev,
+@@ -127,7 +147,7 @@ static void do_claim(struct rpivid_dev *
+ 		ictl->tail->next = ient;
+ 		ictl->tail = ient;
+ 		ient = NULL;
+-	} else if (ictl->no_sched || ictl->irq) {
++	} else if (!sched_enabled(ictl)) {
+ 		// Empty Q but other activity in progress so Q
+ 		ictl->claim = ient;
+ 		ictl->tail = ient;
+@@ -135,16 +155,34 @@ static void do_claim(struct rpivid_dev *
+ 	} else {
+ 		// Nothing else going on - schedule immediately and
+ 		// prevent anything else scheduling claims
+-		ictl->no_sched = 1;
++		set_claimed(ictl);
+ 	}
+ 
+ 	spin_unlock_irqrestore(&ictl->lock, flags);
+ 
+-	if (ient) {
+-		ient->cb(dev, ient->v);
++	sched_cb(dev, ictl, ient);
++}
+ 
+-		sched_claim(dev, ictl);
+-	}
++/* Enable n claims.
++ * n < 0   set to unlimited (default on init)
++ * n = 0   if previously unlimited then disable otherwise nop
++ * n > 0   if previously unlimited then set to n enables
++ *         otherwise add n enables
++ * The enable count is automatically decremented every time a claim is run
++ */
++static void do_enable_claim(struct rpivid_dev * const dev,
++			    int n,
++			    struct rpivid_hw_irq_ctrl * const ictl)
++{
++	unsigned long flags;
++	struct rpivid_hw_irq_ent *ient;
++
++	spin_lock_irqsave(&ictl->lock, flags);
++	ictl->enable = n < 0 ? -1 : ictl->enable <= 0 ? n : ictl->enable + n;
++	ient = get_sched(ictl);
++	spin_unlock_irqrestore(&ictl->lock, flags);
++
++	sched_cb(dev, ictl, ient);
+ }
+ 
+ static void ictl_init(struct rpivid_hw_irq_ctrl * const ictl)
+@@ -154,6 +192,8 @@ static void ictl_init(struct rpivid_hw_i
+ 	ictl->tail = NULL;
+ 	ictl->irq = NULL;
+ 	ictl->no_sched = 0;
++	ictl->enable = -1;
++	ictl->thread_reqed = false;
+ }
+ 
+ static void ictl_uninit(struct rpivid_hw_irq_ctrl * const ictl)
+@@ -203,11 +243,7 @@ static void do_thread(struct rpivid_dev
+ 
+ 	spin_unlock_irqrestore(&ictl->lock, flags);
+ 
+-	if (ient) {
+-		ient->cb(dev, ient->v);
+-
+-		sched_claim(dev, ictl);
+-	}
++	sched_cb(dev, ictl, ient);
+ }
+ 
+ static irqreturn_t rpivid_irq_thread(int irq, void *data)
+@@ -231,6 +267,12 @@ void rpivid_hw_irq_active1_thread(struct
+ 	pre_thread(dev, ient, thread_cb, ctx, &dev->ic_active1);
+ }
+ 
++void rpivid_hw_irq_active1_enable_claim(struct rpivid_dev *dev,
++					int n)
++{
++	do_enable_claim(dev, n, &dev->ic_active1);
++}
++
+ void rpivid_hw_irq_active1_claim(struct rpivid_dev *dev,
+ 				 struct rpivid_hw_irq_ent *ient,
+ 				 rpivid_irq_callback ready_cb, void *ctx)
+--- a/drivers/staging/media/rpivid/rpivid_hw.h
++++ b/drivers/staging/media/rpivid/rpivid_hw.h
+@@ -272,6 +272,9 @@ static inline void apb_write_vc_len(cons
+ 		ARG_IC_ICTRL_ACTIVE1_INT_SET    |\
+ 		ARG_IC_ICTRL_ACTIVE2_INT_SET)
+ 
++/* Regulate claim Q */
++void rpivid_hw_irq_active1_enable_claim(struct rpivid_dev *dev,
++					int n);
+ /* Auto release once all CBs called */
+ void rpivid_hw_irq_active1_claim(struct rpivid_dev *dev,
+ 				 struct rpivid_hw_irq_ent *ient,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0396-RFC-media-Add-media_request_-pin-unpin-API.patch b/target/linux/bcm27xx/patches-5.15/950-0396-RFC-media-Add-media_request_-pin-unpin-API.patch
new file mode 100644
index 0000000000..00d974b0d0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0396-RFC-media-Add-media_request_-pin-unpin-API.patch
@@ -0,0 +1,94 @@
+From bac03c02a20186f93180c824ea58647e81455976 Mon Sep 17 00:00:00 2001
+From: Ezequiel Garcia <ezequiel@collabora.com>
+Date: Sun, 21 Mar 2021 16:38:54 -0300
+Subject: [PATCH] RFC: media: Add media_request_{pin,unpin} API
+
+This is probably not the API we will want to add, but it
+should show what semantics are needed by drivers.
+
+The goal is to allow the OUTPUT (aka source) buffer and the
+controls associated to a request to be released from the request,
+and in particular return the OUTPUT buffer back to userspace,
+without signalling the media request fd.
+
+This is useful for devices that are able to pre-process
+the OUTPUT buffer, therefore able to release it before
+the decoding is finished. These drivers should signal
+the media request fd only after the CAPTURE buffer is done.
+
+Tested-by: John Cox <jc@kynesim.co.uk>
+Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
+---
+ drivers/media/mc/mc-request.c | 35 +++++++++++++++++++++++++++++++++++
+ include/media/media-request.h | 12 ++++++++++++
+ 2 files changed, 47 insertions(+)
+
+--- a/drivers/media/mc/mc-request.c
++++ b/drivers/media/mc/mc-request.c
+@@ -505,3 +505,38 @@ unlock:
+ 		media_request_put(req);
+ }
+ EXPORT_SYMBOL_GPL(media_request_object_complete);
++
++void media_request_pin(struct media_request *req)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&req->lock, flags);
++	if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED))
++		goto unlock;
++	req->num_incomplete_objects++;
++unlock:
++	spin_unlock_irqrestore(&req->lock, flags);
++}
++EXPORT_SYMBOL_GPL(media_request_pin);
++
++void media_request_unpin(struct media_request *req)
++{
++	unsigned long flags;
++	bool completed = false;
++
++	spin_lock_irqsave(&req->lock, flags);
++	if (WARN_ON(!req->num_incomplete_objects) ||
++	    WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED))
++		goto unlock;
++
++	if (!--req->num_incomplete_objects) {
++		req->state = MEDIA_REQUEST_STATE_COMPLETE;
++		wake_up_interruptible_all(&req->poll_wait);
++		completed = true;
++	}
++unlock:
++	spin_unlock_irqrestore(&req->lock, flags);
++	if (completed)
++		media_request_put(req);
++}
++EXPORT_SYMBOL_GPL(media_request_unpin);
+--- a/include/media/media-request.h
++++ b/include/media/media-request.h
+@@ -189,6 +189,10 @@ static inline void media_request_get(str
+  */
+ void media_request_put(struct media_request *req);
+ 
++void media_request_pin(struct media_request *req);
++
++void media_request_unpin(struct media_request *req);
++
+ /**
+  * media_request_get_by_fd - Get a media request by fd
+  *
+@@ -228,6 +232,14 @@ static inline void media_request_put(str
+ {
+ }
+ 
++static inline void media_request_pin(struct media_request *req)
++{
++}
++
++static inline void media_request_unpin(struct media_request *req)
++{
++}
++
+ static inline struct media_request *
+ media_request_get_by_fd(struct media_device *mdev, int request_fd)
+ {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0397-media-rpivid-Add-a-Pass0-to-accumulate-slices-and-re.patch b/target/linux/bcm27xx/patches-5.15/950-0397-media-rpivid-Add-a-Pass0-to-accumulate-slices-and-re.patch
new file mode 100644
index 0000000000..064ebaf2e4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0397-media-rpivid-Add-a-Pass0-to-accumulate-slices-and-re.patch
@@ -0,0 +1,1049 @@
+From 006d6d95a003be26df5b34be959f29725ded0bb6 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 11 Mar 2021 19:08:00 +0000
+Subject: [PATCH] media: rpivid: Add a Pass0 to accumulate slices and
+ rework job finish
+
+Due to overheads in assembling controls and requests it is worth having
+the slice assembly phase separate from the h/w pass1 processing. Create
+a queue to service pass1 rather than have the pass1 finished callback
+trigger the next slice job.
+
+This requires a rework of the logic that splits up the buffer and
+request done events. This code contains two ways of doing that, we use
+Ezequiel Garcias <ezequiel@collabora.com> solution, but expect that
+in the future this will be handled by the framework in a cleaner manner.
+
+Fix up the handling of some of the memory exhaustion crashes uncovered
+in the process of writing this code.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/media/v4l2-core/v4l2-mem2mem.c     |   2 -
+ drivers/staging/media/rpivid/rpivid.c      |  11 +-
+ drivers/staging/media/rpivid/rpivid.h      |  20 +-
+ drivers/staging/media/rpivid/rpivid_dec.c  |  32 +-
+ drivers/staging/media/rpivid/rpivid_h265.c | 432 ++++++++++++++++-----
+ drivers/staging/media/rpivid/rpivid_hw.c   |   8 +-
+ 6 files changed, 374 insertions(+), 131 deletions(-)
+
+--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
++++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
+@@ -492,8 +492,6 @@ void v4l2_m2m_job_finish(struct v4l2_m2m
+ 	 * holding capture buffers. Those should use
+ 	 * v4l2_m2m_buf_done_and_job_finish() instead.
+ 	 */
+-	WARN_ON(m2m_ctx->out_q_ctx.q.subsystem_flags &
+-		VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF);
+ 	spin_lock_irqsave(&m2m_dev->job_spinlock, flags);
+ 	schedule_next = _v4l2_m2m_job_finish(m2m_dev, m2m_ctx);
+ 	spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags);
+--- a/drivers/staging/media/rpivid/rpivid.c
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -79,17 +79,24 @@ static const struct rpivid_control rpivi
+ 
+ #define rpivid_ctrls_COUNT	ARRAY_SIZE(rpivid_ctrls)
+ 
+-void *rpivid_find_control_data(struct rpivid_ctx *ctx, u32 id)
++struct v4l2_ctrl *rpivid_find_ctrl(struct rpivid_ctx *ctx, u32 id)
+ {
+ 	unsigned int i;
+ 
+ 	for (i = 0; ctx->ctrls[i]; i++)
+ 		if (ctx->ctrls[i]->id == id)
+-			return ctx->ctrls[i]->p_cur.p;
++			return ctx->ctrls[i];
+ 
+ 	return NULL;
+ }
+ 
++void *rpivid_find_control_data(struct rpivid_ctx *ctx, u32 id)
++{
++	struct v4l2_ctrl *const ctrl = rpivid_find_ctrl(ctx, id);
++
++	return !ctrl ? NULL : ctrl->p_cur.p;
++}
++
+ static int rpivid_init_ctrls(struct rpivid_dev *dev, struct rpivid_ctx *ctx)
+ {
+ 	struct v4l2_ctrl_handler *hdl = &ctx->hdl;
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -24,6 +24,10 @@
+ 
+ #define OPT_DEBUG_POLL_IRQ  0
+ 
++#define RPIVID_DEC_ENV_COUNT 6
++#define RPIVID_P1BUF_COUNT 3
++#define RPIVID_P2BUF_COUNT 3
++
+ #define RPIVID_NAME			"rpivid"
+ 
+ #define RPIVID_CAPABILITY_UNTILED	BIT(0)
+@@ -45,6 +49,7 @@ struct rpivid_control {
+ };
+ 
+ struct rpivid_h265_run {
++	u32 slice_ents;
+ 	const struct v4l2_ctrl_hevc_sps			*sps;
+ 	const struct v4l2_ctrl_hevc_pps			*pps;
+ 	const struct v4l2_ctrl_hevc_slice_params	*slice_params;
+@@ -64,7 +69,6 @@ struct rpivid_buffer {
+ 
+ struct rpivid_dec_state;
+ struct rpivid_dec_env;
+-#define RPIVID_DEC_ENV_COUNT 3
+ 
+ struct rpivid_gptr {
+ 	size_t size;
+@@ -79,7 +83,6 @@ typedef void (*rpivid_irq_callback)(stru
+ struct rpivid_q_aux;
+ #define RPIVID_AUX_ENT_COUNT VB2_MAX_FRAME
+ 
+-#define RPIVID_P2BUF_COUNT 2
+ 
+ struct rpivid_ctx {
+ 	struct v4l2_fh			fh;
+@@ -108,11 +111,13 @@ struct rpivid_ctx {
+ 
+ 	struct rpivid_dec_env *dec_pool;
+ 
+-	/* Some of these should be in dev */
+-	struct rpivid_gptr bitbufs[1];  /* Will be 2 */
+-	struct rpivid_gptr cmdbufs[1];  /* Will be 2 */
++	unsigned int p1idx;
++	atomic_t p1out;
++	struct rpivid_gptr bitbufs[RPIVID_P1BUF_COUNT];
++	struct rpivid_gptr cmdbufs[RPIVID_P1BUF_COUNT];
++
++	/* *** Should be in dev *** */
+ 	unsigned int p2idx;
+-	atomic_t p2out;
+ 	struct rpivid_gptr pu_bufs[RPIVID_P2BUF_COUNT];
+ 	struct rpivid_gptr coeff_bufs[RPIVID_P2BUF_COUNT];
+ 
+@@ -141,6 +146,8 @@ struct rpivid_variant {
+ 
+ struct rpivid_hw_irq_ent;
+ 
++#define RPIVID_ICTL_ENABLE_UNLIMITED (-1)
++
+ struct rpivid_hw_irq_ctrl {
+ 	/* Spinlock protecting claim and tail */
+ 	spinlock_t lock;
+@@ -182,6 +189,7 @@ struct rpivid_dev {
+ 
+ extern struct rpivid_dec_ops rpivid_dec_ops_h265;
+ 
++struct v4l2_ctrl *rpivid_find_ctrl(struct rpivid_ctx *ctx, u32 id);
+ void *rpivid_find_control_data(struct rpivid_ctx *ctx, u32 id);
+ 
+ #endif
+--- a/drivers/staging/media/rpivid/rpivid_dec.c
++++ b/drivers/staging/media/rpivid/rpivid_dec.c
+@@ -21,8 +21,8 @@
+ 
+ void rpivid_device_run(void *priv)
+ {
+-	struct rpivid_ctx *ctx = priv;
+-	struct rpivid_dev *dev = ctx->dev;
++	struct rpivid_ctx *const ctx = priv;
++	struct rpivid_dev *const dev = ctx->dev;
+ 	struct rpivid_run run = {};
+ 	struct media_request *src_req;
+ 
+@@ -32,19 +32,17 @@ void rpivid_device_run(void *priv)
+ 	if (!run.src || !run.dst) {
+ 		v4l2_err(&dev->v4l2_dev, "%s: Missing buffer: src=%p, dst=%p\n",
+ 			 __func__, run.src, run.dst);
+-		/* We are stuffed - this probably won't dig us out of our
+-		 * current situation but it is better than nothing
+-		 */
+-		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+-						 VB2_BUF_STATE_ERROR);
+-		return;
++		goto fail;
+ 	}
+ 
+-	/* Apply request(s) controls if needed. */
++	/* Apply request(s) controls */
+ 	src_req = run.src->vb2_buf.req_obj.req;
++	if (!src_req) {
++		v4l2_err(&dev->v4l2_dev, "%s: Missing request\n", __func__);
++		goto fail;
++	}
+ 
+-	if (src_req)
+-		v4l2_ctrl_request_setup(src_req, &ctx->hdl);
++	v4l2_ctrl_request_setup(src_req, &ctx->hdl);
+ 
+ 	switch (ctx->src_fmt.pixelformat) {
+ 	case V4L2_PIX_FMT_HEVC_SLICE:
+@@ -70,10 +68,14 @@ void rpivid_device_run(void *priv)
+ 
+ 	dev->dec_ops->setup(ctx, &run);
+ 
+-	/* Complete request(s) controls if needed. */
+-
+-	if (src_req)
+-		v4l2_ctrl_request_complete(src_req, &ctx->hdl);
++	/* Complete request(s) controls */
++	v4l2_ctrl_request_complete(src_req, &ctx->hdl);
+ 
+ 	dev->dec_ops->trigger(ctx);
++	return;
++
++fail:
++	/* We really shouldn't get here but tidy up what we can */
++	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
++					 VB2_BUF_STATE_ERROR);
+ }
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -22,6 +22,8 @@
+ #define DEBUG_TRACE_P1_CMD 0
+ #define DEBUG_TRACE_EXECUTION 0
+ 
++#define USE_REQUEST_PIN 1
++
+ #if DEBUG_TRACE_EXECUTION
+ #define xtrace_in(dev_, de_)\
+ 	v4l2_info(&(dev_)->v4l2_dev, "%s[%d]: in\n",   __func__,\
+@@ -192,8 +194,6 @@ struct rpivid_dec_env {
+ 	unsigned int decode_order;
+ 	int p1_status;		/* P1 status - what to realloc */
+ 
+-	struct rpivid_dec_env *phase_wait_q_next;
+-
+ 	struct rpi_cmd *cmd_fifo;
+ 	unsigned int cmd_len, cmd_max;
+ 	unsigned int num_slice_msgs;
+@@ -219,6 +219,7 @@ struct rpivid_dec_env {
+ 	u32 rpi_currpoc;
+ 
+ 	struct vb2_v4l2_buffer *frame_buf; // Detached dest buffer
++	struct vb2_v4l2_buffer *src_buf;   // Detached src buffer
+ 	unsigned int frame_c_offset;
+ 	unsigned int frame_stride;
+ 	dma_addr_t frame_addr;
+@@ -235,9 +236,15 @@ struct rpivid_dec_env {
+ 	size_t bit_copy_len;
+ 	struct rpivid_gptr *cmd_copy_gptr;
+ 
+-	u16 slice_msgs[2 * HEVC_MAX_REFS * 8 + 3];
++#define SLICE_MSGS_MAX (2 * HEVC_MAX_REFS * 8 + 3)
++	u16 slice_msgs[SLICE_MSGS_MAX];
+ 	u8 scaling_factors[NUM_SCALING_FACTORS];
+ 
++#if USE_REQUEST_PIN
++	struct media_request *req_pin;
++#else
++	struct media_request_object *req_obj;
++#endif
+ 	struct rpivid_hw_irq_ent irq_ent;
+ };
+ 
+@@ -286,6 +293,17 @@ struct rpivid_dec_state {
+ 	unsigned int prev_ctb_y;
+ };
+ 
++#if !USE_REQUEST_PIN
++static void dst_req_obj_release(struct media_request_object *object)
++{
++	kfree(object);
++}
++
++static const struct media_request_object_ops dst_req_obj_ops = {
++	.release = dst_req_obj_release,
++};
++#endif
++
+ static inline int clip_int(const int x, const int lo, const int hi)
+ {
+ 	return x < lo ? lo : x > hi ? hi : x;
+@@ -298,15 +316,48 @@ static inline int clip_int(const int x,
+ static int p1_z;
+ #endif
+ 
++static int cmds_check_space(struct rpivid_dec_env *const de, unsigned int n)
++{
++	struct rpi_cmd *a;
++	unsigned int newmax;
++
++	if (n > 0x100000) {
++		v4l2_err(&de->ctx->dev->v4l2_dev,
++			 "%s: n %u implausible\n", __func__, n);
++		return -ENOMEM;
++	}
++
++	if (de->cmd_len + n <= de->cmd_max)
++		return 0;
++
++	newmax = 2 << log2_size(de->cmd_len + n);
++
++	a = krealloc(de->cmd_fifo, newmax * sizeof(struct rpi_cmd),
++		     GFP_KERNEL);
++	if (!a) {
++		v4l2_err(&de->ctx->dev->v4l2_dev,
++			 "Failed cmd buffer realloc from %u to %u\n",
++			 de->cmd_max, newmax);
++		return -ENOMEM;
++	}
++	v4l2_info(&de->ctx->dev->v4l2_dev,
++		  "cmd buffer realloc from %u to %u\n", de->cmd_max, newmax);
++
++	de->cmd_fifo = a;
++	de->cmd_max = newmax;
++	return 0;
++}
++
+ // ???? u16 addr - put in u32
+-static int p1_apb_write(struct rpivid_dec_env *const de, const u16 addr,
+-			const u32 data)
++static void p1_apb_write(struct rpivid_dec_env *const de, const u16 addr,
++			 const u32 data)
+ {
+-	if (de->cmd_len == de->cmd_max)
+-		de->cmd_fifo =
+-			krealloc(de->cmd_fifo,
+-				 (de->cmd_max *= 2) * sizeof(struct rpi_cmd),
+-				 GFP_KERNEL);
++	if (de->cmd_len >= de->cmd_max) {
++		v4l2_err(&de->ctx->dev->v4l2_dev,
++			 "%s: Overflow @ %d\n", __func__, de->cmd_len);
++		return;
++	}
++
+ 	de->cmd_fifo[de->cmd_len].addr = addr;
+ 	de->cmd_fifo[de->cmd_len].data = data;
+ 
+@@ -316,8 +367,7 @@ static int p1_apb_write(struct rpivid_de
+ 			  de->cmd_len, addr, data);
+ 	}
+ #endif
+-
+-	return de->cmd_len++;
++	de->cmd_len++;
+ }
+ 
+ static int ctb_to_tile(unsigned int ctb, unsigned int *bd, int num)
+@@ -511,6 +561,7 @@ static const u8 prob_init[3][156] = {
+ 	},
+ };
+ 
++#define CMDS_WRITE_PROB ((RPI_PROB_ARRAY_SIZE / 4) + 1)
+ static void write_prob(struct rpivid_dec_env *const de,
+ 		       const struct rpivid_dec_state *const s)
+ {
+@@ -554,6 +605,7 @@ static void write_prob(struct rpivid_dec
+ 	p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
+ }
+ 
++#define CMDS_WRITE_SCALING_FACTORS NUM_SCALING_FACTORS
+ static void write_scaling_factors(struct rpivid_dec_env *const de)
+ {
+ 	int i;
+@@ -569,8 +621,9 @@ static inline __u32 dma_to_axi_addr(dma_
+ 	return (__u32)(a >> 6);
+ }
+ 
+-static void write_bitstream(struct rpivid_dec_env *const de,
+-			    const struct rpivid_dec_state *const s)
++#define CMDS_WRITE_BITSTREAM 4
++static int write_bitstream(struct rpivid_dec_env *const de,
++			   const struct rpivid_dec_state *const s)
+ {
+ 	// Note that FFmpeg V4L2 does not remove emulation prevention bytes,
+ 	// so this is matched in the configuration here.
+@@ -584,6 +637,13 @@ static void write_bitstream(struct rpivi
+ 	if (s->src_addr != 0) {
+ 		addr = s->src_addr + offset;
+ 	} else {
++		if (len + de->bit_copy_len > de->bit_copy_gptr->size) {
++			v4l2_warn(&de->ctx->dev->v4l2_dev,
++				  "Bit copy buffer overflow: size=%zu, offset=%zu, len=%u\n",
++				  de->bit_copy_gptr->size,
++				  de->bit_copy_len, len);
++			return -ENOMEM;
++		}
+ 		memcpy(de->bit_copy_gptr->ptr + de->bit_copy_len,
+ 		       s->src_buf + offset, len);
+ 		addr = de->bit_copy_gptr->addr + de->bit_copy_len;
+@@ -595,6 +655,7 @@ static void write_bitstream(struct rpivi
+ 	p1_apb_write(de, RPI_BFNUM, len);
+ 	p1_apb_write(de, RPI_BFCONTROL, offset + (1 << 7)); // Stop
+ 	p1_apb_write(de, RPI_BFCONTROL, offset + (rpi_use_emu << 6));
++	return 0;
+ }
+ 
+ //////////////////////////////////////////////////////////////////////////////
+@@ -623,6 +684,7 @@ static u32 slice_reg_const(const struct
+ 
+ //////////////////////////////////////////////////////////////////////////////
+ 
++#define CMDS_NEW_SLICE_SEGMENT (4 + CMDS_WRITE_SCALING_FACTORS)
+ static void new_slice_segment(struct rpivid_dec_env *const de,
+ 			      const struct rpivid_dec_state *const s)
+ {
+@@ -706,6 +768,7 @@ static void msg_slice(struct rpivid_dec_
+ 	de->slice_msgs[de->num_slice_msgs++] = msg;
+ }
+ 
++#define CMDS_PROGRAM_SLICECMDS (1 + SLICE_MSGS_MAX)
+ static void program_slicecmds(struct rpivid_dec_env *const de,
+ 			      const int sliceid)
+ {
+@@ -902,6 +965,7 @@ static void pre_slice_decode(struct rpiv
+ 		       (sh->slice_cb_qp_offset & 31)); // CMD_QPOFF
+ }
+ 
++#define CMDS_WRITE_SLICE 1
+ static void write_slice(struct rpivid_dec_env *const de,
+ 			const struct rpivid_dec_state *const s,
+ 			const u32 slice_const,
+@@ -927,6 +991,7 @@ static void write_slice(struct rpivid_de
+  * N.B. This can be called to fill in data from the previous slice so must not
+  * use any state data that may change from slice to slice (e.g. qp)
+  */
++#define CMDS_NEW_ENTRY_POINT (6 + CMDS_WRITE_SLICE)
+ static void new_entry_point(struct rpivid_dec_env *const de,
+ 			    const struct rpivid_dec_state *const s,
+ 			    const bool do_bte,
+@@ -977,6 +1042,7 @@ static void new_entry_point(struct rpivi
+ //////////////////////////////////////////////////////////////////////////////
+ // Wavefront mode
+ 
++#define CMDS_WPP_PAUSE 4
+ static void wpp_pause(struct rpivid_dec_env *const de, int ctb_row)
+ {
+ 	p1_apb_write(de, RPI_STATUS, (ctb_row << 18) | 0x25);
+@@ -987,12 +1053,19 @@ static void wpp_pause(struct rpivid_dec_
+ 	p1_apb_write(de, RPI_CONTROL, (ctb_row << 16) + 2);
+ }
+ 
+-static void wpp_entry_fill(struct rpivid_dec_env *const de,
+-			   const struct rpivid_dec_state *const s,
+-			   const unsigned int last_y)
++#define CMDS_WPP_ENTRY_FILL_1 (CMDS_WPP_PAUSE + 2 + CMDS_NEW_ENTRY_POINT)
++static int wpp_entry_fill(struct rpivid_dec_env *const de,
++			  const struct rpivid_dec_state *const s,
++			  const unsigned int last_y)
+ {
++	int rv;
+ 	const unsigned int last_x = s->ctb_width - 1;
+ 
++	rv = cmds_check_space(de, CMDS_WPP_ENTRY_FILL_1 *
++				  (last_y - de->entry_ctb_y));
++	if (rv)
++		return rv;
++
+ 	while (de->entry_ctb_y < last_y) {
+ 		/* wpp_entry_x/y set by wpp_entry_point */
+ 		if (s->ctb_width > 2)
+@@ -1010,12 +1083,21 @@ static void wpp_entry_fill(struct rpivid
+ 				0, 0, 0, de->entry_ctb_y + 1,
+ 				de->entry_qp, de->entry_slice);
+ 	}
++	return 0;
+ }
+ 
+-static void wpp_end_previous_slice(struct rpivid_dec_env *const de,
+-				   const struct rpivid_dec_state *const s)
++static int wpp_end_previous_slice(struct rpivid_dec_env *const de,
++				  const struct rpivid_dec_state *const s)
+ {
+-	wpp_entry_fill(de, s, s->prev_ctb_y);
++	int rv;
++
++	rv = wpp_entry_fill(de, s, s->prev_ctb_y);
++	if (rv)
++		return rv;
++
++	rv = cmds_check_space(de, CMDS_WPP_PAUSE + 2);
++	if (rv)
++		return rv;
+ 
+ 	if (de->entry_ctb_x < 2 &&
+ 	    (de->entry_ctb_y < s->start_ctb_y || s->start_ctb_x > 2) &&
+@@ -1026,21 +1108,38 @@ static void wpp_end_previous_slice(struc
+ 	if (s->start_ctb_x == 2 ||
+ 	    (s->ctb_width == 2 && de->entry_ctb_y < s->start_ctb_y))
+ 		p1_apb_write(de, RPI_TRANSFER, PROB_BACKUP);
++	return 0;
+ }
+ 
+ /* Only main profile supported so WPP => !Tiles which makes some of the
+  * next chunk code simpler
+  */
+-static void wpp_decode_slice(struct rpivid_dec_env *const de,
+-			     const struct rpivid_dec_state *const s)
++static int wpp_decode_slice(struct rpivid_dec_env *const de,
++			    const struct rpivid_dec_state *const s)
+ {
+ 	bool reset_qp_y = true;
+ 	const bool indep = !s->dependent_slice_segment_flag;
++	int rv;
+ 
+-	if (s->start_ts)
+-		wpp_end_previous_slice(de, s);
++	if (s->start_ts) {
++		rv = wpp_end_previous_slice(de, s);
++		if (rv)
++			return rv;
++	}
+ 	pre_slice_decode(de, s);
+-	write_bitstream(de, s);
++
++	rv = cmds_check_space(de,
++			      CMDS_WRITE_BITSTREAM +
++				CMDS_WRITE_PROB +
++				CMDS_PROGRAM_SLICECMDS +
++				CMDS_NEW_SLICE_SEGMENT +
++				CMDS_NEW_ENTRY_POINT);
++	if (rv)
++		return rv;
++
++	rv = write_bitstream(de, s);
++	if (rv)
++		return rv;
+ 
+ 	if (!s->start_ts || indep || s->ctb_width == 1)
+ 		write_prob(de, s);
+@@ -1056,7 +1155,13 @@ static void wpp_decode_slice(struct rpiv
+ 			s->slice_qp, slice_reg_const(s));
+ 
+ 	if (s->frame_end) {
+-		wpp_entry_fill(de, s, s->ctb_height - 1);
++		rv = wpp_entry_fill(de, s, s->ctb_height - 1);
++		if (rv)
++			return rv;
++
++		rv = cmds_check_space(de, CMDS_WPP_PAUSE + 1);
++		if (rv)
++			return rv;
+ 
+ 		if (de->entry_ctb_x < 2 && s->ctb_width > 2)
+ 			wpp_pause(de, s->ctb_height - 1);
+@@ -1065,25 +1170,32 @@ static void wpp_decode_slice(struct rpiv
+ 			     1 | ((s->ctb_width - 1) << 5) |
+ 				((s->ctb_height - 1) << 18));
+ 	}
+-
++	return 0;
+ }
+ 
+ //////////////////////////////////////////////////////////////////////////////
+ // Tiles mode
+ 
+-static void tile_entry_fill(struct rpivid_dec_env *const de,
+-			    const struct rpivid_dec_state *const s,
+-			    const unsigned int last_tile_x,
+-			    const unsigned int last_tile_y)
++// Guarantees 1 cmd entry free on exit
++static int tile_entry_fill(struct rpivid_dec_env *const de,
++			   const struct rpivid_dec_state *const s,
++			   const unsigned int last_tile_x,
++			   const unsigned int last_tile_y)
+ {
+ 	while (de->entry_tile_y < last_tile_y ||
+ 	       (de->entry_tile_y == last_tile_y &&
+ 		de->entry_tile_x < last_tile_x)) {
++		int rv;
+ 		unsigned int t_x = de->entry_tile_x;
+ 		unsigned int t_y = de->entry_tile_y;
+ 		const unsigned int last_x = s->col_bd[t_x + 1] - 1;
+ 		const unsigned int last_y = s->row_bd[t_y + 1] - 1;
+ 
++		// One more than needed here
++		rv = cmds_check_space(de, CMDS_NEW_ENTRY_POINT + 3);
++		if (rv)
++			return rv;
++
+ 		p1_apb_write(de, RPI_STATUS,
+ 			     2 | (last_x << 5) | (last_y << 18));
+ 		p1_apb_write(de, RPI_TRANSFER, PROB_RELOAD);
+@@ -1098,33 +1210,55 @@ static void tile_entry_fill(struct rpivi
+ 				t_x, t_y, s->col_bd[t_x], s->row_bd[t_y],
+ 				de->entry_qp, de->entry_slice);
+ 	}
++	return 0;
+ }
+ 
+ /*
+  * Write STATUS register with expected end CTU address of previous slice
+  */
+-static void end_previous_slice(struct rpivid_dec_env *const de,
+-			       const struct rpivid_dec_state *const s)
++static int end_previous_slice(struct rpivid_dec_env *const de,
++			      const struct rpivid_dec_state *const s)
+ {
+-	tile_entry_fill(de, s,
+-			ctb_to_tile_x(s, s->prev_ctb_x),
+-			ctb_to_tile_y(s, s->prev_ctb_y));
++	int rv;
++
++	rv = tile_entry_fill(de, s,
++			     ctb_to_tile_x(s, s->prev_ctb_x),
++			     ctb_to_tile_y(s, s->prev_ctb_y));
++	if (rv)
++		return rv;
++
+ 	p1_apb_write(de, RPI_STATUS,
+ 		     1 | (s->prev_ctb_x << 5) | (s->prev_ctb_y << 18));
++	return 0;
+ }
+ 
+-static void decode_slice(struct rpivid_dec_env *const de,
+-			 const struct rpivid_dec_state *const s)
++static int decode_slice(struct rpivid_dec_env *const de,
++			const struct rpivid_dec_state *const s)
+ {
+ 	bool reset_qp_y;
+ 	unsigned int tile_x = ctb_to_tile_x(s, s->start_ctb_x);
+ 	unsigned int tile_y = ctb_to_tile_y(s, s->start_ctb_y);
++	int rv;
+ 
+-	if (s->start_ts)
+-		end_previous_slice(de, s);
++	if (s->start_ts) {
++		rv = end_previous_slice(de, s);
++		if (rv)
++			return rv;
++	}
++
++	rv = cmds_check_space(de,
++			      CMDS_WRITE_BITSTREAM +
++				CMDS_WRITE_PROB +
++				CMDS_PROGRAM_SLICECMDS +
++				CMDS_NEW_SLICE_SEGMENT +
++				CMDS_NEW_ENTRY_POINT);
++	if (rv)
++		return rv;
+ 
+ 	pre_slice_decode(de, s);
+-	write_bitstream(de, s);
++	rv = write_bitstream(de, s);
++	if (rv)
++		return rv;
+ 
+ 	reset_qp_y = !s->start_ts ||
+ 		!s->dependent_slice_segment_flag ||
+@@ -1146,13 +1280,16 @@ static void decode_slice(struct rpivid_d
+ 	 * when it will be known where this slice finishes
+ 	 */
+ 	if (s->frame_end) {
+-		tile_entry_fill(de, s,
+-				s->tile_width - 1,
+-				s->tile_height - 1);
++		rv = tile_entry_fill(de, s,
++				     s->tile_width - 1,
++				     s->tile_height - 1);
++		if (rv)
++			return rv;
+ 		p1_apb_write(de, RPI_STATUS,
+ 			     1 | ((s->ctb_width - 1) << 5) |
+ 				((s->ctb_height - 1) << 18));
+ 	}
++	return 0;
+ }
+ 
+ //////////////////////////////////////////////////////////////////////////////
+@@ -1524,7 +1661,7 @@ static void rpivid_h265_setup(struct rpi
+ 	struct rpivid_dev *const dev = ctx->dev;
+ 	const struct v4l2_ctrl_hevc_slice_params *const sh =
+ 						run->h265.slice_params;
+-	const struct v4l2_hevc_pred_weight_table *pred_weight_table;
++//	const struct v4l2_hevc_pred_weight_table *pred_weight_table;
+ 	struct rpivid_q_aux *dpb_q_aux[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ 	struct rpivid_dec_state *const s = ctx->state;
+ 	struct vb2_queue *vq;
+@@ -1532,11 +1669,12 @@ static void rpivid_h265_setup(struct rpi
+ 	unsigned int prev_rs;
+ 	unsigned int i;
+ 	int use_aux;
++	int rv;
+ 	bool slice_temporal_mvp;
+ 
+ 	xtrace_in(dev, de);
+ 
+-	pred_weight_table = &sh->pred_weight_table;
++//	pred_weight_table = &sh->pred_weight_table;
+ 
+ 	s->frame_end =
+ 		((run->src->flags & V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF) == 0);
+@@ -1608,9 +1746,9 @@ static void rpivid_h265_setup(struct rpi
+ 		de->cmd_len = 0;
+ 		de->dpbno_col = ~0U;
+ 
+-		de->bit_copy_gptr = ctx->bitbufs + 0;
++		de->bit_copy_gptr = ctx->bitbufs + ctx->p1idx;
+ 		de->bit_copy_len = 0;
+-		de->cmd_copy_gptr = ctx->cmdbufs + 0;
++		de->cmd_copy_gptr = ctx->cmdbufs + ctx->p1idx;
+ 
+ 		de->frame_c_offset = ctx->dst_fmt.height * 128;
+ 		de->frame_stride = ctx->dst_fmt.plane_fmt[0].bytesperline * 128;
+@@ -1727,6 +1865,9 @@ static void rpivid_h265_setup(struct rpi
+ 			bits_alloc = wxh < 983040 ? wxh * 3 / 4 :
+ 				wxh < 983040 * 2 ? 983040 * 3 / 4 :
+ 				wxh * 3 / 8;
++			/* Allow for bit depth */
++			bits_alloc += (bits_alloc *
++				       s->sps.bit_depth_luma_minus8) / 8;
+ 			bits_alloc = round_up_size(bits_alloc);
+ 
+ 			if (gptr_alloc(dev, de->bit_copy_gptr,
+@@ -1743,18 +1884,35 @@ static void rpivid_h265_setup(struct rpi
+ 		}
+ 	}
+ 
+-	// Pre calc a few things
+-	s->src_addr =
+-		!s->frame_end ?
+-			0 :
+-			vb2_dma_contig_plane_dma_addr(&run->src->vb2_buf, 0);
+-	s->src_buf = s->src_addr != 0 ? NULL :
+-					vb2_plane_vaddr(&run->src->vb2_buf, 0);
++	// Either map src buffer or use directly
++	s->src_addr = 0;
++	s->src_buf = NULL;
++
++	if (run->src->planes[0].bytesused < (sh->bit_size + 7) / 8) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "Bit size %d > bytesused %d\n",
++			  sh->bit_size, run->src->planes[0].bytesused);
++		goto fail;
++	}
++	if (sh->data_bit_offset >= sh->bit_size ||
++	    sh->bit_size - sh->data_bit_offset < 8) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "Bit size %d < Bit offset %d + 8\n",
++			  sh->bit_size, sh->data_bit_offset);
++		goto fail;
++	}
++
++	if (s->frame_end)
++		s->src_addr = vb2_dma_contig_plane_dma_addr(&run->src->vb2_buf,
++							    0);
++	if (!s->src_addr)
++		s->src_buf = vb2_plane_vaddr(&run->src->vb2_buf, 0);
+ 	if (!s->src_addr && !s->src_buf) {
+ 		v4l2_err(&dev->v4l2_dev, "Failed to map src buffer\n");
+ 		goto fail;
+ 	}
+ 
++	// Pre calc a few things
+ 	s->sh = sh;
+ 	s->slice_qp = 26 + s->pps.init_qp_minus26 + s->sh->slice_qp_delta;
+ 	s->max_num_merge_cand = sh->slice_type == HEVC_SLICE_I ?
+@@ -1785,9 +1943,11 @@ static void rpivid_h265_setup(struct rpi
+ 	s->prev_ctb_y = prev_rs / de->pic_width_in_ctbs_y;
+ 
+ 	if ((s->pps.flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED))
+-		wpp_decode_slice(de, s);
++		rv = wpp_decode_slice(de, s);
+ 	else
+-		decode_slice(de, s);
++		rv = decode_slice(de, s);
++	if (rv)
++		goto fail;
+ 
+ 	if (!s->frame_end) {
+ 		xtrace_ok(dev, de);
+@@ -1945,29 +2105,28 @@ static int check_status(const struct rpi
+ 	return -1;
+ }
+ 
+-static void cb_phase2(struct rpivid_dev *const dev, void *v)
++static void phase2_cb(struct rpivid_dev *const dev, void *v)
+ {
+ 	struct rpivid_dec_env *const de = v;
+-	struct rpivid_ctx *const ctx = de->ctx;
+ 
+ 	xtrace_in(dev, de);
+ 
+-	v4l2_m2m_cap_buf_return(dev->m2m_dev, ctx->fh.m2m_ctx, de->frame_buf,
+-				VB2_BUF_STATE_DONE);
+-	de->frame_buf = NULL;
++	/* Done with buffers - allow new P1 */
++	rpivid_hw_irq_active1_enable_claim(dev, 1);
+ 
+-	/* Delete de before finish as finish might immediately trigger a reuse
+-	 * of de
+-	 */
+-	dec_env_delete(de);
++	v4l2_m2m_buf_done(de->frame_buf, VB2_BUF_STATE_DONE);
++	de->frame_buf = NULL;
+ 
+-	if (atomic_add_return(-1, &ctx->p2out) >= RPIVID_P2BUF_COUNT - 1) {
+-		xtrace_fin(dev, de);
+-		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+-						 VB2_BUF_STATE_DONE);
+-	}
++#if USE_REQUEST_PIN
++	media_request_unpin(de->req_pin);
++	de->req_pin = NULL;
++#else
++	media_request_object_complete(de->req_obj);
++	de->req_obj = NULL;
++#endif
+ 
+ 	xtrace_ok(dev, de);
++	dec_env_delete(de);
+ }
+ 
+ static void phase2_claimed(struct rpivid_dev *const dev, void *v)
+@@ -2023,7 +2182,7 @@ static void phase2_claimed(struct rpivid
+ 	//	   de->ctx->colmvbuf.addr, de->ctx->colmvbuf.addr +
+ 	//	   de->ctx->colmvbuf.size);
+ 
+-	rpivid_hw_irq_active2_irq(dev, &de->irq_ent, cb_phase2, de);
++	rpivid_hw_irq_active2_irq(dev, &de->irq_ent, phase2_cb, de);
+ 
+ 	apb_write_final(dev, RPI_NUMROWS, de->pic_height_in_ctbs_y);
+ 
+@@ -2032,6 +2191,39 @@ static void phase2_claimed(struct rpivid
+ 
+ static void phase1_claimed(struct rpivid_dev *const dev, void *v);
+ 
++// release any and all objects associated with de
++// and reenable phase 1 if required
++static void phase1_err_fin(struct rpivid_dev *const dev,
++			   struct rpivid_ctx *const ctx,
++			   struct rpivid_dec_env *const de)
++{
++	/* Return all detached buffers */
++	if (de->src_buf)
++		v4l2_m2m_buf_done(de->src_buf, VB2_BUF_STATE_ERROR);
++	de->src_buf = NULL;
++	if (de->frame_buf)
++		v4l2_m2m_buf_done(de->frame_buf, VB2_BUF_STATE_ERROR);
++	de->frame_buf = NULL;
++#if USE_REQUEST_PIN
++	if (de->req_pin)
++		media_request_unpin(de->req_pin);
++	de->req_pin = NULL;
++#else
++	if (de->req_obj)
++		media_request_object_complete(de->req_obj);
++	de->req_obj = NULL;
++#endif
++
++	dec_env_delete(de);
++
++	/* Reenable phase 0 if we were blocking */
++	if (atomic_add_return(-1, &ctx->p1out) >= RPIVID_P1BUF_COUNT - 1)
++		v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
++
++	/* Done with P1-P2 buffers - allow new P1 */
++	rpivid_hw_irq_active1_enable_claim(dev, 1);
++}
++
+ static void phase1_thread(struct rpivid_dev *const dev, void *v)
+ {
+ 	struct rpivid_dec_env *const de = v;
+@@ -2076,15 +2268,12 @@ fail:
+ 			 __func__);
+ 		ctx->fatal_err = 1;
+ 	}
+-	dec_env_delete(de);
+-	xtrace_fin(dev, de);
+-	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+-					 VB2_BUF_STATE_ERROR);
+ 	xtrace_fail(dev, de);
++	phase1_err_fin(dev, ctx, de);
+ }
+ 
+ /* Always called in irq context (this is good) */
+-static void cb_phase1(struct rpivid_dev *const dev, void *v)
++static void phase1_cb(struct rpivid_dev *const dev, void *v)
+ {
+ 	struct rpivid_dec_env *const de = v;
+ 	struct rpivid_ctx *const ctx = de->ctx;
+@@ -2092,6 +2281,7 @@ static void cb_phase1(struct rpivid_dev
+ 	xtrace_in(dev, de);
+ 
+ 	de->p1_status = check_status(dev);
++
+ 	if (de->p1_status != 0) {
+ 		v4l2_info(&dev->v4l2_dev, "%s: Post wait: %#x\n",
+ 			  __func__, de->p1_status);
+@@ -2105,24 +2295,17 @@ static void cb_phase1(struct rpivid_dev
+ 		return;
+ 	}
+ 
+-	/* After the frame-buf is detached it must be returned but from
+-	 * this point onward (phase2_claimed, cb_phase2) there are no error
+-	 * paths so the return at the end of cb_phase2 is all that is needed
+-	 */
+-	de->frame_buf = v4l2_m2m_cap_buf_detach(dev->m2m_dev, ctx->fh.m2m_ctx);
+-	if (!de->frame_buf) {
+-		v4l2_err(&dev->v4l2_dev, "%s: No detached buffer\n", __func__);
+-		goto fail;
+-	}
++	v4l2_m2m_buf_done(de->src_buf, VB2_BUF_STATE_DONE);
++	de->src_buf = NULL;
+ 
++	/* All phase1 error paths done - it is safe to inc p2idx */
+ 	ctx->p2idx =
+ 		(ctx->p2idx + 1 >= RPIVID_P2BUF_COUNT) ? 0 : ctx->p2idx + 1;
+ 
+-	// Enable the next setup if our Q isn't too big
+-	if (atomic_add_return(1, &ctx->p2out) < RPIVID_P2BUF_COUNT) {
++	/* Renable the next setup if we were blocking */
++	if (atomic_add_return(-1, &ctx->p1out) >= RPIVID_P1BUF_COUNT - 1) {
+ 		xtrace_fin(dev, de);
+-		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+-						 VB2_BUF_STATE_DONE);
++		v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
+ 	}
+ 
+ 	rpivid_hw_irq_active2_claim(dev, &de->irq_ent, phase2_claimed, de);
+@@ -2131,11 +2314,8 @@ static void cb_phase1(struct rpivid_dev
+ 	return;
+ 
+ fail:
+-	dec_env_delete(de);
+-	xtrace_fin(dev, de);
+-	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+-					 VB2_BUF_STATE_ERROR);
+ 	xtrace_fail(dev, de);
++	phase1_err_fin(dev, ctx, de);
+ }
+ 
+ static void phase1_claimed(struct rpivid_dev *const dev, void *v)
+@@ -2160,6 +2340,10 @@ static void phase1_claimed(struct rpivid
+ 	de->coeff_stride =
+ 		ALIGN_DOWN(coeff_gptr->size / de->pic_height_in_ctbs_y, 64);
+ 
++	/* phase1_claimed blocked until cb_phase1 completed so p2idx inc
++	 * in cb_phase1 after error detection
++	 */
++
+ 	apb_write_vc_addr(dev, RPI_PUWBASE, de->pu_base_vc);
+ 	apb_write_vc_len(dev, RPI_PUWSTRIDE, de->pu_stride);
+ 	apb_write_vc_addr(dev, RPI_COEFFWBASE, de->coeff_base_vc);
+@@ -2169,7 +2353,7 @@ static void phase1_claimed(struct rpivid
+ 	apb_write(dev, RPI_CFNUM, de->cmd_len);
+ 
+ 	// Claim irq
+-	rpivid_hw_irq_active1_irq(dev, &de->irq_ent, cb_phase1, de);
++	rpivid_hw_irq_active1_irq(dev, &de->irq_ent, phase1_cb, de);
+ 
+ 	// And start the h/w
+ 	apb_write_vc_addr_final(dev, RPI_CFBASE, de->cmd_copy_gptr->addr);
+@@ -2178,11 +2362,8 @@ static void phase1_claimed(struct rpivid
+ 	return;
+ 
+ fail:
+-	dec_env_delete(de);
+-	xtrace_fin(dev, de);
+-	v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+-					 VB2_BUF_STATE_ERROR);
+ 	xtrace_fail(dev, de);
++	phase1_err_fin(dev, ctx, de);
+ }
+ 
+ static void dec_state_delete(struct rpivid_ctx *const ctx)
+@@ -2315,7 +2496,9 @@ static void rpivid_h265_trigger(struct r
+ 	case RPIVID_DECODE_SLICE_CONTINUE:
+ 		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+ 						 VB2_BUF_STATE_DONE);
++		xtrace_ok(dev, de);
+ 		break;
++
+ 	default:
+ 		v4l2_err(&dev->v4l2_dev, "%s: Unexpected state: %d\n", __func__,
+ 			 de->state);
+@@ -2329,14 +2512,59 @@ static void rpivid_h265_trigger(struct r
+ 		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+ 						 VB2_BUF_STATE_ERROR);
+ 		break;
++
+ 	case RPIVID_DECODE_PHASE1:
+ 		ctx->dec0 = NULL;
++
++#if !USE_REQUEST_PIN
++		/* Alloc a new request object - needs to be alloced dynamically
++		 * as the media request will release it some random time after
++		 * it is completed
++		 */
++		de->req_obj = kmalloc(sizeof(*de->req_obj), GFP_KERNEL);
++		if (!de->req_obj) {
++			xtrace_fail(dev, de);
++			dec_env_delete(de);
++			v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev,
++							 ctx->fh.m2m_ctx,
++							 VB2_BUF_STATE_ERROR);
++			break;
++		}
++		media_request_object_init(de->req_obj);
++#warning probably needs to _get the req obj too
++#endif
++		ctx->p1idx = (ctx->p1idx + 1 >= RPIVID_P1BUF_COUNT) ?
++							0 : ctx->p1idx + 1;
++
++		/* We know we have src & dst so no need to test */
++		de->src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
++		de->frame_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
++
++#if USE_REQUEST_PIN
++		de->req_pin = de->src_buf->vb2_buf.req_obj.req;
++		media_request_pin(de->req_pin);
++#else
++		media_request_object_bind(de->src_buf->vb2_buf.req_obj.req,
++					  &dst_req_obj_ops, de, false,
++					  de->req_obj);
++#endif
++
++		/* We could get rid of the src buffer here if we've already
++		 * copied it, but we don't copy the last buffer unless it
++		 * didn't return a contig dma addr and that shouldn't happen
++		 */
++
++		/* Enable the next setup if our Q isn't too big */
++		if (atomic_add_return(1, &ctx->p1out) < RPIVID_P1BUF_COUNT) {
++			xtrace_fin(dev, de);
++			v4l2_m2m_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx);
++		}
++
+ 		rpivid_hw_irq_active1_claim(dev, &de->irq_ent, phase1_claimed,
+ 					    de);
++		xtrace_ok(dev, de);
+ 		break;
+ 	}
+-
+-	xtrace_ok(dev, de);
+ }
+ 
+ struct rpivid_dec_ops rpivid_dec_ops_h265 = {
+--- a/drivers/staging/media/rpivid/rpivid_hw.c
++++ b/drivers/staging/media/rpivid/rpivid_hw.c
+@@ -185,14 +185,14 @@ static void do_enable_claim(struct rpivi
+ 	sched_cb(dev, ictl, ient);
+ }
+ 
+-static void ictl_init(struct rpivid_hw_irq_ctrl * const ictl)
++static void ictl_init(struct rpivid_hw_irq_ctrl * const ictl, int enables)
+ {
+ 	spin_lock_init(&ictl->lock);
+ 	ictl->claim = NULL;
+ 	ictl->tail = NULL;
+ 	ictl->irq = NULL;
+ 	ictl->no_sched = 0;
+-	ictl->enable = -1;
++	ictl->enable = enables;
+ 	ictl->thread_reqed = false;
+ }
+ 
+@@ -308,8 +308,8 @@ int rpivid_hw_probe(struct rpivid_dev *d
+ 	int irq_dec;
+ 	int ret = 0;
+ 
+-	ictl_init(&dev->ic_active1);
+-	ictl_init(&dev->ic_active2);
++	ictl_init(&dev->ic_active1, RPIVID_P2BUF_COUNT);
++	ictl_init(&dev->ic_active2, RPIVID_ICTL_ENABLE_UNLIMITED);
+ 
+ 	res = platform_get_resource_byname(dev->pdev, IORESOURCE_MEM, "intc");
+ 	if (!res)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0398-media-rpivid-Map-cmd-buffer-directly.patch b/target/linux/bcm27xx/patches-5.15/950-0398-media-rpivid-Map-cmd-buffer-directly.patch
new file mode 100644
index 0000000000..b569473251
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0398-media-rpivid-Map-cmd-buffer-directly.patch
@@ -0,0 +1,160 @@
+From a84845bed68844d9d84c242b9357b908bdd19b9d Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Mon, 29 Mar 2021 17:42:16 +0100
+Subject: [PATCH] media: rpivid: Map cmd buffer directly
+
+It is unnecessary to have a separate dmabuf to hold the cmd buffer.
+Map it directly from the kmalloc.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.h      |  3 +-
+ drivers/staging/media/rpivid/rpivid_h265.c | 48 ++++++++++------------
+ drivers/staging/media/rpivid/rpivid_hw.c   |  2 +
+ 3 files changed, 25 insertions(+), 28 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -114,7 +114,6 @@ struct rpivid_ctx {
+ 	unsigned int p1idx;
+ 	atomic_t p1out;
+ 	struct rpivid_gptr bitbufs[RPIVID_P1BUF_COUNT];
+-	struct rpivid_gptr cmdbufs[RPIVID_P1BUF_COUNT];
+ 
+ 	/* *** Should be in dev *** */
+ 	unsigned int p2idx;
+@@ -183,6 +182,8 @@ struct rpivid_dev {
+ 	struct clk		*clock;
+ 	struct clk_request      *hevc_req;
+ 
++	int			cache_align;
++
+ 	struct rpivid_hw_irq_ctrl ic_active1;
+ 	struct rpivid_hw_irq_ctrl ic_active2;
+ };
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -227,6 +227,9 @@ struct rpivid_dec_env {
+ 	struct rpivid_q_aux *frame_aux;
+ 	struct rpivid_q_aux *col_aux;
+ 
++	dma_addr_t cmd_addr;
++	size_t cmd_size;
++
+ 	dma_addr_t pu_base_vc;
+ 	dma_addr_t coeff_base_vc;
+ 	u32 pu_stride;
+@@ -234,7 +237,6 @@ struct rpivid_dec_env {
+ 
+ 	struct rpivid_gptr *bit_copy_gptr;
+ 	size_t bit_copy_len;
+-	struct rpivid_gptr *cmd_copy_gptr;
+ 
+ #define SLICE_MSGS_MAX (2 * HEVC_MAX_REFS * 8 + 3)
+ 	u16 slice_msgs[SLICE_MSGS_MAX];
+@@ -1499,22 +1501,17 @@ static int write_cmd_buffer(struct rpivi
+ 			    struct rpivid_dec_env *const de,
+ 			    const struct rpivid_dec_state *const s)
+ {
+-	// Copy commands out to dma buf
+-	const size_t cmd_size = de->cmd_len * sizeof(de->cmd_fifo[0]);
+-
+-	if (!de->cmd_copy_gptr->ptr || cmd_size > de->cmd_copy_gptr->size) {
+-		size_t cmd_alloc = round_up_size(cmd_size);
++	const size_t cmd_size = ALIGN(de->cmd_len * sizeof(de->cmd_fifo[0]),
++				      dev->cache_align);
+ 
+-		if (gptr_realloc_new(dev, de->cmd_copy_gptr, cmd_alloc)) {
+-			v4l2_err(&dev->v4l2_dev,
+-				 "Alloc cmd buffer (%zu): FAILED\n", cmd_alloc);
+-			return -ENOMEM;
+-		}
+-		v4l2_info(&dev->v4l2_dev, "Alloc cmd buffer (%zu): OK\n",
+-			  cmd_alloc);
++	de->cmd_addr = dma_map_single(dev->dev, de->cmd_fifo,
++				      cmd_size, DMA_TO_DEVICE);
++	if (dma_mapping_error(dev->dev, de->cmd_addr)) {
++		v4l2_err(&dev->v4l2_dev,
++			 "Map cmd buffer (%zu): FAILED\n", cmd_size);
++		return -ENOMEM;
+ 	}
+-
+-	memcpy(de->cmd_copy_gptr->ptr, de->cmd_fifo, cmd_size);
++	de->cmd_size = cmd_size;
+ 	return 0;
+ }
+ 
+@@ -1551,6 +1548,12 @@ static void dec_env_delete(struct rpivid
+ 	struct rpivid_ctx * const ctx = de->ctx;
+ 	unsigned long lock_flags;
+ 
++	if (de->cmd_size) {
++		dma_unmap_single(ctx->dev->dev, de->cmd_addr, de->cmd_size,
++				 DMA_TO_DEVICE);
++		de->cmd_size = 0;
++	}
++
+ 	aux_q_release(ctx, &de->frame_aux);
+ 	aux_q_release(ctx, &de->col_aux);
+ 
+@@ -1603,7 +1606,8 @@ static int dec_env_init(struct rpivid_ct
+ 
+ 		de->ctx = ctx;
+ 		de->decode_order = i;
+-		de->cmd_max = 1024;
++//		de->cmd_max = 1024;
++		de->cmd_max = 8096;
+ 		de->cmd_fifo = kmalloc_array(de->cmd_max,
+ 					     sizeof(struct rpi_cmd),
+ 					     GFP_KERNEL);
+@@ -1748,7 +1752,6 @@ static void rpivid_h265_setup(struct rpi
+ 
+ 		de->bit_copy_gptr = ctx->bitbufs + ctx->p1idx;
+ 		de->bit_copy_len = 0;
+-		de->cmd_copy_gptr = ctx->cmdbufs + ctx->p1idx;
+ 
+ 		de->frame_c_offset = ctx->dst_fmt.height * 128;
+ 		de->frame_stride = ctx->dst_fmt.plane_fmt[0].bytesperline * 128;
+@@ -2356,7 +2359,7 @@ static void phase1_claimed(struct rpivid
+ 	rpivid_hw_irq_active1_irq(dev, &de->irq_ent, phase1_cb, de);
+ 
+ 	// And start the h/w
+-	apb_write_vc_addr_final(dev, RPI_CFBASE, de->cmd_copy_gptr->addr);
++	apb_write_vc_addr_final(dev, RPI_CFBASE, de->cmd_addr);
+ 
+ 	xtrace_ok(dev, de);
+ 	return;
+@@ -2400,8 +2403,6 @@ static void rpivid_h265_stop(struct rpiv
+ 
+ 	for (i = 0; i != ARRAY_SIZE(ctx->bitbufs); ++i)
+ 		gptr_free(dev, ctx->bitbufs + i);
+-	for (i = 0; i != ARRAY_SIZE(ctx->cmdbufs); ++i)
+-		gptr_free(dev, ctx->cmdbufs + i);
+ 	for (i = 0; i != ARRAY_SIZE(ctx->pu_bufs); ++i)
+ 		gptr_free(dev, ctx->pu_bufs + i);
+ 	for (i = 0; i != ARRAY_SIZE(ctx->coeff_bufs); ++i)
+@@ -2451,13 +2452,6 @@ static int rpivid_h265_start(struct rpiv
+ 		goto fail;
+ 	}
+ 
+-	// 16k is plenty for most purposes but we will realloc if needed
+-	for (i = 0; i != ARRAY_SIZE(ctx->cmdbufs); ++i) {
+-		if (gptr_alloc(dev, ctx->cmdbufs + i, 0x4000,
+-			       DMA_ATTR_FORCE_CONTIGUOUS))
+-			goto fail;
+-	}
+-
+ 	// Finger in the air PU & Coeff alloc
+ 	// Will be realloced if too small
+ 	coeff_alloc = round_up_size(wxh);
+--- a/drivers/staging/media/rpivid/rpivid_hw.c
++++ b/drivers/staging/media/rpivid/rpivid_hw.c
+@@ -331,6 +331,8 @@ int rpivid_hw_probe(struct rpivid_dev *d
+ 	if (IS_ERR(dev->clock))
+ 		return PTR_ERR(dev->clock);
+ 
++	dev->cache_align = dma_get_cache_alignment();
++
+ 	// Disable IRQs & reset anything pending
+ 	irq_write(dev, 0,
+ 		  ARG_IC_ICTRL_ACTIVE1_EN_SET | ARG_IC_ICTRL_ACTIVE2_EN_SET);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0399-media-rpivid-Improve-values-returned-when-setting-ou.patch b/target/linux/bcm27xx/patches-5.15/950-0399-media-rpivid-Improve-values-returned-when-setting-ou.patch
new file mode 100644
index 0000000000..8b6ec75c12
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0399-media-rpivid-Improve-values-returned-when-setting-ou.patch
@@ -0,0 +1,216 @@
+From 9f32962c0fe4129a01bd0422cd1cda76a13c5ef4 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 1 Apr 2021 16:20:58 +0100
+Subject: [PATCH] media: rpivid: Improve values returned when setting
+ output format
+
+Guess a better value for the compressed bitstream buffer size
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid_h265.c  | 66 ++++-----------------
+ drivers/staging/media/rpivid/rpivid_video.c | 61 +++++++++++++++++--
+ drivers/staging/media/rpivid/rpivid_video.h |  4 ++
+ 3 files changed, 70 insertions(+), 61 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -18,6 +18,7 @@
+ 
+ #include "rpivid.h"
+ #include "rpivid_hw.h"
++#include "rpivid_video.h"
+ 
+ #define DEBUG_TRACE_P1_CMD 0
+ #define DEBUG_TRACE_EXECUTION 0
+@@ -115,41 +116,9 @@ static int gptr_realloc_new(struct rpivi
+ 	return 0;
+ }
+ 
+-/* floor(log2(x)) */
+-static unsigned int log2_size(size_t x)
+-{
+-	unsigned int n = 0;
+-
+-	if (x & ~0xffff) {
+-		n += 16;
+-		x >>= 16;
+-	}
+-	if (x & ~0xff) {
+-		n += 8;
+-		x >>= 8;
+-	}
+-	if (x & ~0xf) {
+-		n += 4;
+-		x >>= 4;
+-	}
+-	if (x & ~3) {
+-		n += 2;
+-		x >>= 2;
+-	}
+-	return (x & ~1) ? n + 1 : n;
+-}
+-
+-static size_t round_up_size(const size_t x)
+-{
+-	/* Admit no size < 256 */
+-	const unsigned int n = x < 256 ? 8 : log2_size(x) - 1;
+-
+-	return x >= (3 << n) ? 4 << n : (3 << n);
+-}
+-
+ static size_t next_size(const size_t x)
+ {
+-	return round_up_size(x + 1);
++	return rpivid_round_up_size(x + 1);
+ }
+ 
+ #define NUM_SCALING_FACTORS 4064 /* Not a typo = 0xbe0 + 0x400 */
+@@ -332,7 +301,7 @@ static int cmds_check_space(struct rpivi
+ 	if (de->cmd_len + n <= de->cmd_max)
+ 		return 0;
+ 
+-	newmax = 2 << log2_size(de->cmd_len + n);
++	newmax = roundup_pow_of_two(de->cmd_len + n);
+ 
+ 	a = krealloc(de->cmd_fifo, newmax * sizeof(struct rpi_cmd),
+ 		     GFP_KERNEL);
+@@ -1855,23 +1824,10 @@ static void rpivid_h265_setup(struct rpi
+ 		 * slice as we can use the src buf directly
+ 		 */
+ 		if (!s->frame_end && !de->bit_copy_gptr->ptr) {
+-			const size_t wxh = s->sps.pic_width_in_luma_samples *
+-				s->sps.pic_height_in_luma_samples;
+ 			size_t bits_alloc;
+-
+-			/* Annex A gives a min compression of 2 @ lvl 3.1
+-			 * (wxh <= 983040) and min 4 thereafter but avoid
+-			 * the odity of 983041 having a lower limit than
+-			 * 983040.
+-			 * Multiply by 3/2 for 4:2:0
+-			 */
+-			bits_alloc = wxh < 983040 ? wxh * 3 / 4 :
+-				wxh < 983040 * 2 ? 983040 * 3 / 4 :
+-				wxh * 3 / 8;
+-			/* Allow for bit depth */
+-			bits_alloc += (bits_alloc *
+-				       s->sps.bit_depth_luma_minus8) / 8;
+-			bits_alloc = round_up_size(bits_alloc);
++			bits_alloc = rpivid_bit_buf_size(s->sps.pic_width_in_luma_samples,
++							 s->sps.pic_height_in_luma_samples,
++							 s->sps.bit_depth_luma_minus8);
+ 
+ 			if (gptr_alloc(dev, de->bit_copy_gptr,
+ 				       bits_alloc,
+@@ -2454,17 +2410,15 @@ static int rpivid_h265_start(struct rpiv
+ 
+ 	// Finger in the air PU & Coeff alloc
+ 	// Will be realloced if too small
+-	coeff_alloc = round_up_size(wxh);
+-	pu_alloc = round_up_size(wxh / 4);
++	coeff_alloc = rpivid_round_up_size(wxh);
++	pu_alloc = rpivid_round_up_size(wxh / 4);
+ 	for (i = 0; i != ARRAY_SIZE(ctx->pu_bufs); ++i) {
+ 		// Don't actually need a kernel mapping here
+ 		if (gptr_alloc(dev, ctx->pu_bufs + i, pu_alloc,
+-			       DMA_ATTR_FORCE_CONTIGUOUS |
+-					DMA_ATTR_NO_KERNEL_MAPPING))
++			       DMA_ATTR_NO_KERNEL_MAPPING))
+ 			goto fail;
+ 		if (gptr_alloc(dev, ctx->coeff_bufs + i, coeff_alloc,
+-			       DMA_ATTR_FORCE_CONTIGUOUS |
+-					DMA_ATTR_NO_KERNEL_MAPPING))
++			       DMA_ATTR_NO_KERNEL_MAPPING))
+ 			goto fail;
+ 	}
+ 	aux_q_init(ctx);
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -42,18 +42,69 @@ static inline unsigned int constrain2x(u
+ 			(x > y * 2) ? y : x;
+ }
+ 
++size_t rpivid_round_up_size(const size_t x)
++{
++	/* Admit no size < 256 */
++	const unsigned int n = x < 256 ? 8 : ilog2(x);
++
++	return x >= (3 << n) ? 4 << n : (3 << n);
++}
++
++size_t rpivid_bit_buf_size(unsigned int w, unsigned int h, unsigned int bits_minus8)
++{
++	const size_t wxh = w * h;
++	size_t bits_alloc;
++
++	/* Annex A gives a min compression of 2 @ lvl 3.1
++	 * (wxh <= 983040) and min 4 thereafter but avoid
++	 * the odity of 983041 having a lower limit than
++	 * 983040.
++	 * Multiply by 3/2 for 4:2:0
++	 */
++	bits_alloc = wxh < 983040 ? wxh * 3 / 4 :
++		wxh < 983040 * 2 ? 983040 * 3 / 4 :
++		wxh * 3 / 8;
++	/* Allow for bit depth */
++	bits_alloc += (bits_alloc * bits_minus8) / 8;
++	return rpivid_round_up_size(bits_alloc);
++}
++
+ int rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt)
+ {
++	size_t size;
++	u32 w;
++	u32 h;
++
+ 	if (pix_fmt->pixelformat != V4L2_PIX_FMT_HEVC_SLICE)
+ 		return -EINVAL;
+ 
+-	/* Zero bytes per line for encoded source. */
+-	pix_fmt->plane_fmt[0].bytesperline = 0;
+-	/* Choose some minimum size since this can't be 0 */
+-	pix_fmt->plane_fmt[0].sizeimage = max_t(u32, SZ_1K,
+-						pix_fmt->plane_fmt[0].sizeimage);
++	w = pix_fmt->width;
++	h = pix_fmt->height;
++	if (!w || !h) {
++		w = 1920;
++		h = 1080;
++	}
++	if (w > 4096)
++		w = 4096;
++	if (h > 4096)
++		h = 4096;
++
++	if (!pix_fmt->plane_fmt[0].sizeimage ||
++	    pix_fmt->plane_fmt[0].sizeimage > SZ_32M) {
++		/* Unspecified or way too big - pick max for size */
++		size = rpivid_bit_buf_size(w, h, 2);
++	}
++	/* Set a minimum */
++	size = max_t(u32, SZ_4K, pix_fmt->plane_fmt[0].sizeimage);
++
++	pix_fmt->width = w;
++	pix_fmt->height = h;
+ 	pix_fmt->num_planes = 1;
+ 	pix_fmt->field = V4L2_FIELD_NONE;
++	/* Zero bytes per line for encoded source. */
++	pix_fmt->plane_fmt[0].bytesperline = 0;
++	pix_fmt->plane_fmt[0].sizeimage = size;
++
+ 	return 0;
+ }
+ 
+--- a/drivers/staging/media/rpivid/rpivid_video.h
++++ b/drivers/staging/media/rpivid/rpivid_video.h
+@@ -24,6 +24,10 @@ extern const struct v4l2_ioctl_ops rpivi
+ 
+ int rpivid_queue_init(void *priv, struct vb2_queue *src_vq,
+ 		      struct vb2_queue *dst_vq);
++
++size_t rpivid_bit_buf_size(unsigned int w, unsigned int h, unsigned int bits_minus8);
++size_t rpivid_round_up_size(const size_t x);
++
+ int rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt);
+ int rpivid_prepare_dst_format(struct v4l2_pix_format_mplane *pix_fmt);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0400-media-rpivid-Improve-stream_on-off-conformance-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0400-media-rpivid-Improve-stream_on-off-conformance-clock.patch
new file mode 100644
index 0000000000..b48a4bcca8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0400-media-rpivid-Improve-stream_on-off-conformance-clock.patch
@@ -0,0 +1,260 @@
+From 6242eec33d0b49a6ea12c60cf98693dc5abc5577 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Sat, 3 Apr 2021 16:27:03 +0100
+Subject: [PATCH] media: rpivid: Improve stream_on/off conformance &
+ clock setup
+
+Fix stream on & off such that failures leave the driver in the correct
+state.  Ensure that the clock is on when we are streaming and off when
+all contexts attached to this device have stopped streaming.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.c       |   8 +-
+ drivers/staging/media/rpivid/rpivid.h       |  15 ++-
+ drivers/staging/media/rpivid/rpivid_hw.c    |   1 +
+ drivers/staging/media/rpivid/rpivid_video.c | 103 +++++++++++++++-----
+ 4 files changed, 101 insertions(+), 26 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.c
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -212,9 +212,12 @@ static int rpivid_open(struct file *file
+ 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ 	if (!ctx) {
+ 		mutex_unlock(&dev->dev_mutex);
+-		return -ENOMEM;
++		ret = -ENOMEM;
++		goto err_unlock;
+ 	}
+ 
++	mutex_init(&ctx->ctx_mutex);
++
+ 	v4l2_fh_init(&ctx->fh, video_devdata(file));
+ 	file->private_data = &ctx->fh;
+ 	ctx->dev = dev;
+@@ -245,7 +248,9 @@ static int rpivid_open(struct file *file
+ err_ctrls:
+ 	v4l2_ctrl_handler_free(&ctx->hdl);
+ err_free:
++	mutex_destroy(&ctx->ctx_mutex);
+ 	kfree(ctx);
++err_unlock:
+ 	mutex_unlock(&dev->dev_mutex);
+ 
+ 	return ret;
+@@ -266,6 +271,7 @@ static int rpivid_release(struct file *f
+ 	kfree(ctx->ctrls);
+ 
+ 	v4l2_fh_exit(&ctx->fh);
++	mutex_destroy(&ctx->ctx_mutex);
+ 
+ 	kfree(ctx);
+ 
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -84,6 +84,11 @@ struct rpivid_q_aux;
+ #define RPIVID_AUX_ENT_COUNT VB2_MAX_FRAME
+ 
+ 
++#define RPIVID_CTX_STATE_STOPPED	0	/* stream_off */
++#define RPIVID_CTX_STATE_STREAM_ON	1	/* decoding */
++#define RPIVID_CTX_STATE_STREAM_STOP	2	/* in stream_off */
++#define RPIVID_CTX_STATE_STREAM_ERR	3	/* stream_on but broken */
++
+ struct rpivid_ctx {
+ 	struct v4l2_fh			fh;
+ 	struct rpivid_dev		*dev;
+@@ -91,10 +96,19 @@ struct rpivid_ctx {
+ 	struct v4l2_pix_format_mplane	src_fmt;
+ 	struct v4l2_pix_format_mplane	dst_fmt;
+ 	int dst_fmt_set;
++
++	atomic_t 			stream_state;
++	struct clk_request		*clk_req;
++	int 				src_stream_on;
++	int 				dst_stream_on;
++
+ 	// fatal_err is set if an error has occurred s.t. decode cannot
+ 	// continue (such as running out of CMA)
+ 	int fatal_err;
+ 
++	/* Lock for queue operations */
++	struct mutex			ctx_mutex;
++
+ 	struct v4l2_ctrl_handler	hdl;
+ 	struct v4l2_ctrl		**ctrls;
+ 
+@@ -180,7 +194,6 @@ struct rpivid_dev {
+ 	void __iomem		*base_h265;
+ 
+ 	struct clk		*clock;
+-	struct clk_request      *hevc_req;
+ 
+ 	int			cache_align;
+ 
+--- a/drivers/staging/media/rpivid/rpivid_hw.c
++++ b/drivers/staging/media/rpivid/rpivid_hw.c
+@@ -359,6 +359,7 @@ int rpivid_hw_probe(struct rpivid_dev *d
+ void rpivid_hw_remove(struct rpivid_dev *dev)
+ {
+ 	// IRQ auto freed on unload so no need to do it here
++	// ioremap auto freed on unload
+ 	ictl_uninit(&dev->ic_active1);
+ 	ictl_uninit(&dev->ic_active2);
+ }
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -18,6 +18,7 @@
+ #include <media/v4l2-mem2mem.h>
+ 
+ #include "rpivid.h"
++#include "rpivid_hw.h"
+ #include "rpivid_video.h"
+ #include "rpivid_dec.h"
+ 
+@@ -533,33 +534,85 @@ static int rpivid_buf_prepare(struct vb2
+ 	return 0;
+ }
+ 
++/* Only stops the clock if streaom off on both output & capture */
++static void stop_clock(struct rpivid_dev *dev, struct rpivid_ctx *ctx)
++{
++	if (ctx->src_stream_on ||
++	    ctx->dst_stream_on ||
++	    !ctx->clk_req)
++		return;
++
++	clk_request_done(ctx->clk_req);
++	ctx->clk_req = NULL;
++
++	clk_disable_unprepare(dev->clock);
++}
++
++/* Always starts the clock if it isn't already on this ctx */
++static int start_clock(struct rpivid_dev *dev, struct rpivid_ctx *ctx)
++{
++	long max_hevc_clock;
++	int rv;
++
++	if (ctx->clk_req)
++		return 0;
++
++	max_hevc_clock = clk_round_rate(dev->clock, ULONG_MAX);
++
++	ctx->clk_req = clk_request_start(dev->clock, max_hevc_clock);
++	if (!ctx->clk_req) {
++		dev_err(dev->dev, "Failed to set clock rate\n");
++		return -EIO;
++	}
++
++	rv = clk_prepare_enable(dev->clock);
++	if (rv) {
++		dev_err(dev->dev, "Failed to enable clock\n");
++		clk_request_done(ctx->clk_req);
++		ctx->clk_req = NULL;
++		return rv;
++	}
++
++	return 0;
++}
++
+ static int rpivid_start_streaming(struct vb2_queue *vq, unsigned int count)
+ {
+ 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
+ 	struct rpivid_dev *dev = ctx->dev;
+-	long max_hevc_clock = clk_round_rate(dev->clock, ULONG_MAX);
+ 	int ret = 0;
+ 
+-	if (ctx->src_fmt.pixelformat != V4L2_PIX_FMT_HEVC_SLICE)
+-		return -EINVAL;
+-
+-	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->start)
+-		ret = dev->dec_ops->start(ctx);
++	if (!V4L2_TYPE_IS_OUTPUT(vq->type)) {
++		ctx->dst_stream_on = 1;
++		goto ok;
++	}
+ 
+-	dev->hevc_req = clk_request_start(dev->clock, max_hevc_clock);
+-	if (!dev->hevc_req) {
+-		dev_err(dev->dev, "Failed to set clock rate\n");
+-		goto out;
++	if (ctx->src_fmt.pixelformat != V4L2_PIX_FMT_HEVC_SLICE) {
++		ret = -EINVAL;
++		goto fail_cleanup;
+ 	}
+ 
+-	ret = clk_prepare_enable(dev->clock);
++	if (ctx->src_stream_on)
++		goto ok;
++
++	ret = start_clock(dev, ctx);
+ 	if (ret)
+-		dev_err(dev->dev, "Failed to enable clock\n");
++		goto fail_cleanup;
+ 
+-out:
++	if (dev->dec_ops->start)
++		ret = dev->dec_ops->start(ctx);
+ 	if (ret)
+-		rpivid_queue_cleanup(vq, VB2_BUF_STATE_QUEUED);
++		goto fail_stop_clock;
++
++	ctx->src_stream_on = 1;
++ok:
++	return 0;
+ 
++fail_stop_clock:
++	stop_clock(dev, ctx);
++fail_cleanup:
++	v4l2_err(&dev->v4l2_dev, "%s: qtype=%d: FAIL\n", __func__, vq->type);
++	rpivid_queue_cleanup(vq, VB2_BUF_STATE_QUEUED);
+ 	return ret;
+ }
+ 
+@@ -568,17 +621,19 @@ static void rpivid_stop_streaming(struct
+ 	struct rpivid_ctx *ctx = vb2_get_drv_priv(vq);
+ 	struct rpivid_dev *dev = ctx->dev;
+ 
+-	if (V4L2_TYPE_IS_OUTPUT(vq->type) && dev->dec_ops->stop)
+-		dev->dec_ops->stop(ctx);
++	if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
++		ctx->src_stream_on = 0;
++		if (dev->dec_ops->stop)
++			dev->dec_ops->stop(ctx);
++	} else {
++		ctx->dst_stream_on = 0;
++	}
+ 
+ 	rpivid_queue_cleanup(vq, VB2_BUF_STATE_ERROR);
+ 
+-	if (dev->hevc_req)
+-	{
+-		clk_request_done(dev->hevc_req);
+-		dev->hevc_req = NULL;
+-	}
+-	clk_disable_unprepare(dev->clock);
++	vb2_wait_for_all_buffers(vq);
++
++	stop_clock(dev, ctx);
+ }
+ 
+ static void rpivid_buf_queue(struct vb2_buffer *vb)
+@@ -622,7 +677,7 @@ int rpivid_queue_init(void *priv, struct
+ 	src_vq->ops = &rpivid_qops;
+ 	src_vq->mem_ops = &vb2_dma_contig_memops;
+ 	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+-	src_vq->lock = &ctx->dev->dev_mutex;
++	src_vq->lock = &ctx->ctx_mutex;
+ 	src_vq->dev = ctx->dev->dev;
+ 	src_vq->supports_requests = true;
+ 	src_vq->requires_requests = true;
+@@ -639,7 +694,7 @@ int rpivid_queue_init(void *priv, struct
+ 	dst_vq->ops = &rpivid_qops;
+ 	dst_vq->mem_ops = &vb2_dma_contig_memops;
+ 	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+-	dst_vq->lock = &ctx->dev->dev_mutex;
++	dst_vq->lock = &ctx->ctx_mutex;
+ 	dst_vq->dev = ctx->dev->dev;
+ 
+ 	return vb2_queue_init(dst_vq);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0401-media-rpivid-Improve-SPS-PPS-error-handling-validati.patch b/target/linux/bcm27xx/patches-5.15/950-0401-media-rpivid-Improve-SPS-PPS-error-handling-validati.patch
new file mode 100644
index 0000000000..74bd1bc043
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0401-media-rpivid-Improve-SPS-PPS-error-handling-validati.patch
@@ -0,0 +1,256 @@
+From c93803888818493c5a0b8eb150256e5f4e6887e8 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 8 Apr 2021 18:34:09 +0100
+Subject: [PATCH] media: rpivid: Improve SPS/PPS error
+ handling/validation
+
+Move size and width checking from bitstream processing to control
+validation
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.c      |   5 +-
+ drivers/staging/media/rpivid/rpivid.h      |   6 +-
+ drivers/staging/media/rpivid/rpivid_h265.c | 132 ++++++++++++++++++---
+ 3 files changed, 121 insertions(+), 22 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.c
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -38,12 +38,14 @@ static const struct rpivid_control rpivi
+ 	{
+ 		.cfg = {
+ 			.id	= V4L2_CID_MPEG_VIDEO_HEVC_SPS,
++			.ops	= &rpivid_hevc_sps_ctrl_ops,
+ 		},
+ 		.required	= true,
+ 	},
+ 	{
+ 		.cfg = {
+ 			.id	= V4L2_CID_MPEG_VIDEO_HEVC_PPS,
++			.ops	= &rpivid_hevc_pps_ctrl_ops,
+ 		},
+ 		.required	= true,
+ 	},
+@@ -119,7 +121,7 @@ static int rpivid_init_ctrls(struct rpiv
+ 
+ 	for (i = 0; i < rpivid_ctrls_COUNT; i++) {
+ 		ctrl = v4l2_ctrl_new_custom(hdl, &rpivid_ctrls[i].cfg,
+-					    NULL);
++					    ctx);
+ 		if (hdl->error) {
+ 			v4l2_err(&dev->v4l2_dev,
+ 				 "Failed to create new custom control id=%#x\n",
+@@ -191,6 +193,7 @@ static int rpivid_request_validate(struc
+ 		if (!ctrl_test) {
+ 			v4l2_info(&ctx->dev->v4l2_dev,
+ 				  "Missing required codec control\n");
++			v4l2_ctrl_request_hdl_put(hdl);
+ 			return -ENOENT;
+ 		}
+ 	}
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -185,7 +185,7 @@ struct rpivid_dev {
+ 	struct platform_device	*pdev;
+ 	struct device		*dev;
+ 	struct v4l2_m2m_dev	*m2m_dev;
+-	struct rpivid_dec_ops	*dec_ops;
++	const struct rpivid_dec_ops *dec_ops;
+ 
+ 	/* Device file mutex */
+ 	struct mutex		dev_mutex;
+@@ -201,7 +201,9 @@ struct rpivid_dev {
+ 	struct rpivid_hw_irq_ctrl ic_active2;
+ };
+ 
+-extern struct rpivid_dec_ops rpivid_dec_ops_h265;
++extern const struct rpivid_dec_ops rpivid_dec_ops_h265;
++extern const struct v4l2_ctrl_ops rpivid_hevc_sps_ctrl_ops;
++extern const struct v4l2_ctrl_ops rpivid_hevc_pps_ctrl_ops;
+ 
+ struct v4l2_ctrl *rpivid_find_ctrl(struct rpivid_ctx *ctx, u32 id);
+ void *rpivid_find_control_data(struct rpivid_ctx *ctx, u32 id);
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -1432,9 +1432,13 @@ static int updated_ps(struct rpivid_dec_
+ 	s->ctb_addr_rs_to_ts = kmalloc_array(s->ctb_size,
+ 					     sizeof(*s->ctb_addr_rs_to_ts),
+ 					     GFP_KERNEL);
++	if (!s->ctb_addr_rs_to_ts)
++		goto fail;
+ 	s->ctb_addr_ts_to_rs = kmalloc_array(s->ctb_size,
+ 					     sizeof(*s->ctb_addr_ts_to_rs),
+ 					     GFP_KERNEL);
++	if (!s->ctb_addr_ts_to_rs)
++		goto fail;
+ 
+ 	if (!(s->pps.flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
+ 		s->tile_width = 1;
+@@ -1446,8 +1450,12 @@ static int updated_ps(struct rpivid_dec_
+ 
+ 	s->col_bd = kmalloc((s->tile_width + 1) * sizeof(*s->col_bd),
+ 			    GFP_KERNEL);
++	if (!s->col_bd)
++		goto fail;
+ 	s->row_bd = kmalloc((s->tile_height + 1) * sizeof(*s->row_bd),
+ 			    GFP_KERNEL);
++	if (!s->row_bd)
++		goto fail;
+ 
+ 	s->col_bd[0] = 0;
+ 	for (i = 1; i < s->tile_width; i++)
+@@ -1462,8 +1470,13 @@ static int updated_ps(struct rpivid_dec_
+ 	s->row_bd[s->tile_height] = s->ctb_height;
+ 
+ 	fill_rs_to_ts(s);
+-
+ 	return 0;
++
++fail:
++	free_ps_info(s);
++	/* Set invalid to force reload */
++	s->sps.pic_width_in_luma_samples = 0;
++	return -ENOMEM;
+ }
+ 
+ static int write_cmd_buffer(struct rpivid_dev *const dev,
+@@ -1694,7 +1707,9 @@ static void rpivid_h265_setup(struct rpi
+ 			memcpy(&s->pps, run->h265.pps, sizeof(s->pps));
+ 
+ 			/* Recalc stuff as required */
+-			updated_ps(s);
++			rv = updated_ps(s);
++			if (rv)
++				goto fail;
+ 		}
+ 
+ 		de = dec_env_new(ctx);
+@@ -1772,22 +1787,6 @@ static void rpivid_h265_setup(struct rpi
+ 			goto fail;
+ 		}
+ 
+-		if (s->sps.pic_width_in_luma_samples > 4096 ||
+-		    s->sps.pic_height_in_luma_samples > 4096) {
+-			v4l2_warn(&dev->v4l2_dev,
+-				  "Pic dimension (%dx%d) exeeds 4096\n",
+-				  s->sps.pic_width_in_luma_samples,
+-				  s->sps.pic_height_in_luma_samples);
+-			goto fail;
+-		}
+-		if ((s->tile_width != 1 || s->tile_height != 1) &&
+-		    (s->pps.flags &
+-		     V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED)) {
+-			v4l2_warn(&dev->v4l2_dev,
+-				  "Tiles + WPP not supported\n");
+-			goto fail;
+-		}
+-
+ 		// Fill in ref planes with our address s.t. if we mess
+ 		// up refs somehow then we still have a valid address
+ 		// entry
+@@ -2515,9 +2514,104 @@ static void rpivid_h265_trigger(struct r
+ 	}
+ }
+ 
+-struct rpivid_dec_ops rpivid_dec_ops_h265 = {
++const struct rpivid_dec_ops rpivid_dec_ops_h265 = {
+ 	.setup = rpivid_h265_setup,
+ 	.start = rpivid_h265_start,
+ 	.stop = rpivid_h265_stop,
+ 	.trigger = rpivid_h265_trigger,
+ };
++
++static int try_ctrl_sps(struct v4l2_ctrl *ctrl)
++{
++	const struct v4l2_ctrl_hevc_sps *const sps = ctrl->p_new.p_hevc_sps;
++	struct rpivid_ctx *const ctx = ctrl->priv;
++	struct rpivid_dev *const dev = ctx->dev;
++
++	if (sps->chroma_format_idc != 1) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "Chroma format (%d) unsupported\n",
++			  sps->chroma_format_idc);
++		return -EINVAL;
++	}
++
++	if (sps->bit_depth_luma_minus8 != 0 &&
++	    sps->bit_depth_luma_minus8 != 2) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "Luma depth (%d) unsupported\n",
++			  sps->bit_depth_luma_minus8 + 8);
++		return -EINVAL;
++	}
++
++	if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "Chroma depth (%d) != Luma depth (%d)\n",
++			  sps->bit_depth_chroma_minus8 + 8,
++			  sps->bit_depth_luma_minus8 + 8);
++		return -EINVAL;
++	}
++
++	if (!sps->pic_width_in_luma_samples ||
++	    !sps->pic_height_in_luma_samples ||
++	    sps->pic_width_in_luma_samples > 4096 ||
++	    sps->pic_height_in_luma_samples > 4096) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "Bad sps width (%u) x height (%u)\n",
++			  sps->pic_width_in_luma_samples,
++			  sps->pic_height_in_luma_samples);
++		return -EINVAL;
++	}
++
++	if (!ctx->dst_fmt_set)
++		return 0;
++
++	if ((sps->bit_depth_luma_minus8 == 0 &&
++	     ctx->dst_fmt.pixelformat != V4L2_PIX_FMT_NV12_COL128) ||
++	    (sps->bit_depth_luma_minus8 == 2 &&
++	     ctx->dst_fmt.pixelformat != V4L2_PIX_FMT_NV12_10_COL128)) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "SPS luma depth %d does not match capture format\n",
++			  sps->bit_depth_luma_minus8 + 8);
++		return -EINVAL;
++	}
++
++	if (sps->pic_width_in_luma_samples > ctx->dst_fmt.width ||
++	    sps->pic_height_in_luma_samples > ctx->dst_fmt.height) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "SPS size (%dx%d) > capture size (%d,%d)\n",
++			  sps->pic_width_in_luma_samples,
++			  sps->pic_height_in_luma_samples,
++			  ctx->dst_fmt.width,
++			  ctx->dst_fmt.height);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++const struct v4l2_ctrl_ops rpivid_hevc_sps_ctrl_ops = {
++	.try_ctrl = try_ctrl_sps,
++};
++
++static int try_ctrl_pps(struct v4l2_ctrl *ctrl)
++{
++	const struct v4l2_ctrl_hevc_pps *const pps = ctrl->p_new.p_hevc_pps;
++	struct rpivid_ctx *const ctx = ctrl->priv;
++	struct rpivid_dev *const dev = ctx->dev;
++
++	if ((pps->flags &
++	     V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED) &&
++	    (pps->flags &
++	     V4L2_HEVC_PPS_FLAG_TILES_ENABLED) &&
++	    (pps->num_tile_columns_minus1 || pps->num_tile_rows_minus1)) {
++		v4l2_warn(&dev->v4l2_dev,
++			  "WPP + Tiles not supported\n");
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++const struct v4l2_ctrl_ops rpivid_hevc_pps_ctrl_ops = {
++	.try_ctrl = try_ctrl_pps,
++};
++
diff --git a/target/linux/bcm27xx/patches-5.15/950-0402-bcm2835-Allow-compressed-frames-to-set-sizeimage-438.patch b/target/linux/bcm27xx/patches-5.15/950-0402-bcm2835-Allow-compressed-frames-to-set-sizeimage-438.patch
new file mode 100644
index 0000000000..bdc497d88a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0402-bcm2835-Allow-compressed-frames-to-set-sizeimage-438.patch
@@ -0,0 +1,47 @@
+From 1e84fba295e3335427ddd9014059617b430077d8 Mon Sep 17 00:00:00 2001
+From: jc-kynesim <jc@kynesim.co.uk>
+Date: Fri, 11 Jun 2021 15:14:31 +0100
+Subject: [PATCH] bcm2835: Allow compressed frames to set sizeimage
+ (#4386)
+
+Allow the user to set sizeimage in TRY_FMT and S_FMT if the format
+flags have V4L2_FMT_FLAG_COMPRESSED set
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c          | 17 ++++++++++++++---
+ 1 file changed, 14 insertions(+), 3 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1291,6 +1291,8 @@ static int vidioc_g_fmt_vid_cap(struct f
+ static int vidioc_try_fmt(struct bcm2835_codec_ctx *ctx, struct v4l2_format *f,
+ 			  struct bcm2835_codec_fmt *fmt)
+ {
++	unsigned int sizeimage;
++
+ 	/*
+ 	 * The V4L2 specification requires the driver to correct the format
+ 	 * struct if any of the dimensions is unsupported
+@@ -1319,9 +1321,18 @@ static int vidioc_try_fmt(struct bcm2835
+ 	f->fmt.pix_mp.num_planes = 1;
+ 	f->fmt.pix_mp.plane_fmt[0].bytesperline =
+ 		get_bytesperline(f->fmt.pix_mp.width, fmt);
+-	f->fmt.pix_mp.plane_fmt[0].sizeimage =
+-		get_sizeimage(f->fmt.pix_mp.plane_fmt[0].bytesperline,
+-			      f->fmt.pix_mp.width, f->fmt.pix_mp.height, fmt);
++	sizeimage = get_sizeimage(f->fmt.pix_mp.plane_fmt[0].bytesperline,
++				  f->fmt.pix_mp.width, f->fmt.pix_mp.height,
++				  fmt);
++	/*
++	 * Drivers must set sizeimage for uncompressed formats
++	 * Compressed formats allow the client to request an alternate
++	 * size for the buffer.
++	 */
++	if (!(fmt->flags & V4L2_FMT_FLAG_COMPRESSED) ||
++	    f->fmt.pix_mp.plane_fmt[0].sizeimage < sizeimage)
++		f->fmt.pix_mp.plane_fmt[0].sizeimage = sizeimage;
++
+ 	memset(f->fmt.pix_mp.plane_fmt[0].reserved, 0,
+ 	       sizeof(f->fmt.pix_mp.plane_fmt[0].reserved));
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0403-media-i2c-imx477-Fix-for-long-exposure-limit-calcula.patch b/target/linux/bcm27xx/patches-5.15/950-0403-media-i2c-imx477-Fix-for-long-exposure-limit-calcula.patch
new file mode 100644
index 0000000000..60d1c1b1ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0403-media-i2c-imx477-Fix-for-long-exposure-limit-calcula.patch
@@ -0,0 +1,26 @@
+From 28d69f0b8b5b66551071919c652355d266e8a841 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Fri, 11 Jun 2021 12:47:07 +0100
+Subject: [PATCH] media: i2c: imx477: Fix for long exposure limit
+ calculations
+
+Do not scale IMX477_EXPOSURE_OFFSET with the long exposure factor during
+the limit calculations. This allows larger exposure times, and does seem to be
+what the sensor is doing internally.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1282,7 +1282,7 @@ static void imx477_adjust_exposure_range
+ 
+ 	/* Honour the VBLANK limits when setting exposure. */
+ 	exposure_max = imx477->mode->height + imx477->vblank->val -
+-		       (IMX477_EXPOSURE_OFFSET << imx477->long_exp_shift);
++		       IMX477_EXPOSURE_OFFSET;
+ 	exposure_def = min(exposure_max, imx477->exposure->val);
+ 	__v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
+ 				 exposure_max, imx477->exposure->step,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0404-clk-bcm2835-Pass-DT-node-to-rpi_firmware_get.patch b/target/linux/bcm27xx/patches-5.15/950-0404-clk-bcm2835-Pass-DT-node-to-rpi_firmware_get.patch
new file mode 100644
index 0000000000..d0c4afe577
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0404-clk-bcm2835-Pass-DT-node-to-rpi_firmware_get.patch
@@ -0,0 +1,24 @@
+From 0f25b008cbdf679e61b3d06642cc3cc618e90880 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 8 Jul 2021 09:37:10 +0100
+Subject: [PATCH] clk: bcm2835: Pass DT node to rpi_firmware_get
+
+The fw_node pointer has already been retrieved, and using it allows
+us to remove a downstream patch to the firmware driver.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -2339,7 +2339,7 @@ static int bcm2835_clk_probe(struct plat
+ 
+ 	fw_node = of_parse_phandle(dev->of_node, "firmware", 0);
+ 	if (fw_node) {
+-		struct rpi_firmware *fw = rpi_firmware_get(NULL);
++		struct rpi_firmware *fw = rpi_firmware_get(fw_node);
+ 		if (!fw)
+ 			return -EPROBE_DEFER;
+ 		cprman->fw = fw;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0405-bcm2835-pcm.c-Support-multichannel-audio.patch b/target/linux/bcm27xx/patches-5.15/950-0405-bcm2835-pcm.c-Support-multichannel-audio.patch
new file mode 100644
index 0000000000..ff1d9c4335
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0405-bcm2835-pcm.c-Support-multichannel-audio.patch
@@ -0,0 +1,34 @@
+From dfd5bc84858c99405a797cb5998fc48ed7d0611d Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Tue, 30 Apr 2019 19:15:30 +0100
+Subject: [PATCH] bcm2835-pcm.c: Support multichannel audio
+
+---
+ .../vc04_services/bcm2835-audio/bcm2835-pcm.c       | 13 +++++++------
+ 1 file changed, 7 insertions(+), 6 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
+@@ -31,15 +31,16 @@ static const struct snd_pcm_hardware snd
+ 		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
+ 		 SNDRV_PCM_INFO_SYNC_APPLPTR | SNDRV_PCM_INFO_BATCH),
+ 	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+-	.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_44100 |
+-	SNDRV_PCM_RATE_48000,
++	.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
++	SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
++	SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
+ 	.rate_min = 44100,
+-	.rate_max = 48000,
++	.rate_max = 192000,
+ 	.channels_min = 2,
+-	.channels_max = 2,
+-	.buffer_bytes_max = 128 * 1024,
++	.channels_max = 8,
++	.buffer_bytes_max = 512 * 1024,
+ 	.period_bytes_min = 1 * 1024,
+-	.period_bytes_max = 128 * 1024,
++	.period_bytes_max = 512 * 1024,
+ 	.periods_min = 1,
+ 	.periods_max = 128,
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0406-bcm2835-pcm-Fix-up-multichannel-pcm-audio.patch b/target/linux/bcm27xx/patches-5.15/950-0406-bcm2835-pcm-Fix-up-multichannel-pcm-audio.patch
new file mode 100644
index 0000000000..57d37e67e6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0406-bcm2835-pcm-Fix-up-multichannel-pcm-audio.patch
@@ -0,0 +1,36 @@
+From fa8bf1b5e90fd0c137fd35d0ae4a80672f5b9317 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 27 Oct 2020 12:24:14 +0000
+Subject: [PATCH] bcm2835-pcm: Fix up multichannel pcm audio
+
+Fixes: a9c1660ff5f02d048c5f31abf1fd1108ccf9ef87
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ .../vc04_services/bcm2835-audio/bcm2835-pcm.c       | 13 ++++++-------
+ 1 file changed, 6 insertions(+), 7 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c
+@@ -31,16 +31,15 @@ static const struct snd_pcm_hardware snd
+ 		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
+ 		 SNDRV_PCM_INFO_SYNC_APPLPTR | SNDRV_PCM_INFO_BATCH),
+ 	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+-	.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+-	SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
+-	SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
++	.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_44100 |
++	SNDRV_PCM_RATE_48000,
+ 	.rate_min = 44100,
+-	.rate_max = 192000,
++	.rate_max = 48000,
+ 	.channels_min = 2,
+-	.channels_max = 8,
+-	.buffer_bytes_max = 512 * 1024,
++	.channels_max = 2,
++	.buffer_bytes_max = 128 * 1024,
+ 	.period_bytes_min = 1 * 1024,
+-	.period_bytes_max = 512 * 1024,
++	.period_bytes_max = 128 * 1024,
+ 	.periods_min = 1,
+ 	.periods_max = 128,
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0407-media-i2c-imx290-Support-60fps-in-2-lane-operation.patch b/target/linux/bcm27xx/patches-5.15/950-0407-media-i2c-imx290-Support-60fps-in-2-lane-operation.patch
new file mode 100644
index 0000000000..454e50932b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0407-media-i2c-imx290-Support-60fps-in-2-lane-operation.patch
@@ -0,0 +1,309 @@
+From 9a1509cc97e4329475cbd0c45258dcdf5d49a7f1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Jun 2021 12:05:25 +0100
+Subject: [PATCH] media: i2c: imx290: Support 60fps in 2 lane operation
+
+Commit "97589ad61c73 media: i2c: imx290: Add support for 2 data lanes"
+added support for running in two lane mode (instead of 4), but
+without changing the link frequency that resulted in a max of 30fps.
+
+Commit "98e0500eadb7 media: i2c: imx290: Add configurable link frequency
+and pixel rate" then doubled the link frequency when in 2 lane mode,
+but didn't undo the correction for running at only 30fps, just extending
+horizontal blanking instead.
+It also didn't update the CSI timing registers in accordance with the
+datasheet.
+
+Remove the 30fps limit on 2 lane by correcting the register config
+in accordance with the datasheet for 60fps operation over 2 lanes.
+Frame rate control (via V4L2_CID_VBLANK or HBLANK) can still reduce
+the frame rate on 2 lanes back to 30fps.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 163 ++++++++++++++++++++++---------------
+ 1 file changed, 97 insertions(+), 66 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -46,8 +46,7 @@ enum imx290_clk_index {
+ #define IMX290_VMAX_MAX 0x3fff
+ #define IMX290_HMAX_LOW 0x301c
+ #define IMX290_HMAX_HIGH 0x301d
+-#define IMX290_HMAX_MIN_2LANE 4400 /* Min of 4400 pixels = 30fps */
+-#define IMX290_HMAX_MIN_4LANE 2200 /* Min of 2200 pixels = 60fps */
++#define IMX290_HMAX_MIN 2200 /* Min of 2200 pixels = 60fps */
+ #define IMX290_HMAX_MAX 0xffff
+ 
+ #define IMX290_EXPOSURE_MIN 1
+@@ -89,8 +88,11 @@ struct imx290_mode {
+ 	u8 link_freq_index;
+ 	struct v4l2_rect crop;
+ 
+-	const struct imx290_regval *data;
+-	u32 data_size;
++	const struct imx290_regval *mode_data;
++	u32 mode_data_size;
++	const struct imx290_regval *lane_data;
++	u32 lane_data_size;
++
+ 
+ 	/* Clock setup can vary. Index as enum imx290_clk_index */
+ 	const struct imx290_regval *clk_data[2];
+@@ -242,8 +244,9 @@ static const struct imx290_regval imx290
+ 	{ 0x3480, 0x92 },
+ };
+ 
+-static const struct imx290_regval imx290_1080p_settings[] = {
++static const struct imx290_regval imx290_1080p_common_settings[] = {
+ 	/* mode settings */
++	{ IMX290_FR_FDG_SEL, 0x01 },
+ 	{ 0x3007, 0x00 },
+ 	{ 0x303a, 0x0c },
+ 	{ 0x3414, 0x0a },
+@@ -253,8 +256,36 @@ static const struct imx290_regval imx290
+ 	{ 0x3419, 0x04 },
+ 	{ 0x3012, 0x64 },
+ 	{ 0x3013, 0x00 },
++};
++
++static const struct imx290_regval imx290_1080p_2lane_settings[] = {
++	{ 0x3405, 0x00 },
+ 	/* data rate settings */
++	{ IMX290_PHY_LANE_NUM, 0x01 },
++	{ IMX290_CSI_LANE_MODE, 0x01 },
++	{ 0x3446, 0x77 },
++	{ 0x3447, 0x00 },
++	{ 0x3448, 0x67 },
++	{ 0x3449, 0x00 },
++	{ 0x344a, 0x47 },
++	{ 0x344b, 0x00 },
++	{ 0x344c, 0x37 },
++	{ 0x344d, 0x00 },
++	{ 0x344e, 0x3f },
++	{ 0x344f, 0x00 },
++	{ 0x3450, 0xff },
++	{ 0x3451, 0x00 },
++	{ 0x3452, 0x3f },
++	{ 0x3453, 0x00 },
++	{ 0x3454, 0x37 },
++	{ 0x3455, 0x00 },
++};
++
++static const struct imx290_regval imx290_1080p_4lane_settings[] = {
+ 	{ 0x3405, 0x10 },
++	/* data rate settings */
++	{ IMX290_PHY_LANE_NUM, 0x03 },
++	{ IMX290_CSI_LANE_MODE, 0x03 },
+ 	{ 0x3446, 0x57 },
+ 	{ 0x3447, 0x00 },
+ 	{ 0x3448, 0x37 },
+@@ -297,8 +328,9 @@ static const struct imx290_regval imx290
+ 	{ 0x3480, 0x92 },
+ };
+ 
+-static const struct imx290_regval imx290_720p_settings[] = {
++static const struct imx290_regval imx290_720p_common_settings[] = {
+ 	/* mode settings */
++	{ IMX290_FR_FDG_SEL, 0x01 },
+ 	{ 0x3007, 0x10 },
+ 	{ 0x303a, 0x06 },
+ 	{ 0x3414, 0x04 },
+@@ -308,8 +340,36 @@ static const struct imx290_regval imx290
+ 	{ 0x3419, 0x02 },
+ 	{ 0x3012, 0x64 },
+ 	{ 0x3013, 0x00 },
++};
++
++static const struct imx290_regval imx290_720p_2lane_settings[] = {
++	{ 0x3405, 0x00 },
++	{ IMX290_PHY_LANE_NUM, 0x01 },
++	{ IMX290_CSI_LANE_MODE, 0x01 },
+ 	/* data rate settings */
++	{ 0x3446, 0x67 },
++	{ 0x3447, 0x00 },
++	{ 0x3448, 0x57 },
++	{ 0x3449, 0x00 },
++	{ 0x344a, 0x2f },
++	{ 0x344b, 0x00 },
++	{ 0x344c, 0x27 },
++	{ 0x344d, 0x00 },
++	{ 0x344e, 0x2f },
++	{ 0x344f, 0x00 },
++	{ 0x3450, 0xbf },
++	{ 0x3451, 0x00 },
++	{ 0x3452, 0x2f },
++	{ 0x3453, 0x00 },
++	{ 0x3454, 0x27 },
++	{ 0x3455, 0x00 },
++};
++
++static const struct imx290_regval imx290_720p_4lane_settings[] = {
+ 	{ 0x3405, 0x10 },
++	{ IMX290_PHY_LANE_NUM, 0x03 },
++	{ IMX290_CSI_LANE_MODE, 0x03 },
++	/* data rate settings */
+ 	{ 0x3446, 0x4f },
+ 	{ 0x3447, 0x00 },
+ 	{ 0x3448, 0x2f },
+@@ -389,7 +449,7 @@ static const struct imx290_mode imx290_m
+ 	{
+ 		.width = 1920,
+ 		.height = 1080,
+-		.hmax = 0x1130,
++		.hmax = 0x0898,
+ 		.vmax = 0x0465,
+ 		.link_freq_index = FREQ_INDEX_1080P,
+ 		.crop = {
+@@ -398,8 +458,10 @@ static const struct imx290_mode imx290_m
+ 			.width = 1920,
+ 			.height = 1080,
+ 		},
+-		.data = imx290_1080p_settings,
+-		.data_size = ARRAY_SIZE(imx290_1080p_settings),
++		.mode_data = imx290_1080p_common_settings,
++		.mode_data_size = ARRAY_SIZE(imx290_1080p_common_settings),
++		.lane_data = imx290_1080p_2lane_settings,
++		.lane_data_size = ARRAY_SIZE(imx290_1080p_2lane_settings),
+ 		.clk_data = {
+ 			[CLK_37_125] = imx290_37_125mhz_clock_1080p,
+ 			[CLK_74_25] = imx290_74_250mhz_clock_1080p,
+@@ -409,7 +471,7 @@ static const struct imx290_mode imx290_m
+ 	{
+ 		.width = 1280,
+ 		.height = 720,
+-		.hmax = 0x19c8,
++		.hmax = 0x0ce4,
+ 		.vmax = 0x02ee,
+ 		.link_freq_index = FREQ_INDEX_720P,
+ 		.crop = {
+@@ -418,8 +480,10 @@ static const struct imx290_mode imx290_m
+ 			.width = 1280,
+ 			.height = 720,
+ 		},
+-		.data = imx290_720p_settings,
+-		.data_size = ARRAY_SIZE(imx290_720p_settings),
++		.mode_data = imx290_720p_common_settings,
++		.mode_data_size = ARRAY_SIZE(imx290_720p_common_settings),
++		.lane_data = imx290_720p_2lane_settings,
++		.lane_data_size = ARRAY_SIZE(imx290_720p_2lane_settings),
+ 		.clk_data = {
+ 			[CLK_37_125] = imx290_37_125mhz_clock_1080p,
+ 			[CLK_74_25] = imx290_74_250mhz_clock_1080p,
+@@ -441,8 +505,10 @@ static const struct imx290_mode imx290_m
+ 			.width = 1920,
+ 			.height = 1080,
+ 		},
+-		.data = imx290_1080p_settings,
+-		.data_size = ARRAY_SIZE(imx290_1080p_settings),
++		.mode_data = imx290_1080p_common_settings,
++		.mode_data_size = ARRAY_SIZE(imx290_1080p_common_settings),
++		.lane_data = imx290_1080p_4lane_settings,
++		.lane_data_size = ARRAY_SIZE(imx290_1080p_4lane_settings),
+ 		.clk_data = {
+ 			[CLK_37_125] = imx290_37_125mhz_clock_720p,
+ 			[CLK_74_25] = imx290_74_250mhz_clock_720p,
+@@ -461,8 +527,10 @@ static const struct imx290_mode imx290_m
+ 			.width = 1280,
+ 			.height = 720,
+ 		},
+-		.data = imx290_720p_settings,
+-		.data_size = ARRAY_SIZE(imx290_720p_settings),
++		.mode_data = imx290_720p_common_settings,
++		.mode_data_size = ARRAY_SIZE(imx290_720p_common_settings),
++		.lane_data = imx290_720p_4lane_settings,
++		.lane_data_size = ARRAY_SIZE(imx290_720p_4lane_settings),
+ 		.clk_data = {
+ 			[CLK_37_125] = imx290_37_125mhz_clock_720p,
+ 			[CLK_74_25] = imx290_74_250mhz_clock_720p,
+@@ -1016,8 +1084,18 @@ static int imx290_start_streaming(struct
+ 	}
+ 
+ 	/* Apply default values of current mode */
+-	ret = imx290_set_register_array(imx290, imx290->current_mode->data,
+-					imx290->current_mode->data_size);
++	ret = imx290_set_register_array(imx290,
++					imx290->current_mode->mode_data,
++					imx290->current_mode->mode_data_size);
++	if (ret < 0) {
++		dev_err(imx290->dev, "Could not set current mode\n");
++		return ret;
++	}
++
++	/* Apply lane config registers of current mode */
++	ret = imx290_set_register_array(imx290,
++					imx290->current_mode->lane_data,
++					imx290->current_mode->lane_data_size);
+ 	if (ret < 0) {
+ 		dev_err(imx290->dev, "Could not set current mode\n");
+ 		return ret;
+@@ -1080,49 +1158,6 @@ static int imx290_get_regulators(struct
+ 				       imx290->supplies);
+ }
+ 
+-static int imx290_set_data_lanes(struct imx290 *imx290)
+-{
+-	int ret = 0, laneval, frsel;
+-
+-	switch (imx290->nlanes) {
+-	case 2:
+-		laneval = 0x01;
+-		frsel = 0x02;
+-		break;
+-	case 4:
+-		laneval = 0x03;
+-		frsel = 0x01;
+-		break;
+-	default:
+-		/*
+-		 * We should never hit this since the data lane count is
+-		 * validated in probe itself
+-		 */
+-		dev_err(imx290->dev, "Lane configuration not supported\n");
+-		ret = -EINVAL;
+-		goto exit;
+-	}
+-
+-	ret = imx290_write_reg(imx290, IMX290_PHY_LANE_NUM, laneval);
+-	if (ret) {
+-		dev_err(imx290->dev, "Error setting Physical Lane number register\n");
+-		goto exit;
+-	}
+-
+-	ret = imx290_write_reg(imx290, IMX290_CSI_LANE_MODE, laneval);
+-	if (ret) {
+-		dev_err(imx290->dev, "Error setting CSI Lane mode register\n");
+-		goto exit;
+-	}
+-
+-	ret = imx290_write_reg(imx290, IMX290_FR_FDG_SEL, frsel);
+-	if (ret)
+-		dev_err(imx290->dev, "Error setting FR/FDG SEL register\n");
+-
+-exit:
+-	return ret;
+-}
+-
+ static int imx290_power_on(struct device *dev)
+ {
+ 	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+@@ -1146,9 +1181,6 @@ static int imx290_power_on(struct device
+ 	gpiod_set_value_cansleep(imx290->rst_gpio, 0);
+ 	usleep_range(30000, 31000);
+ 
+-	/* Set data lane count */
+-	imx290_set_data_lanes(imx290);
+-
+ 	return 0;
+ }
+ 
+@@ -1271,8 +1303,7 @@ static int imx290_probe(struct i2c_clien
+ 		ret = -EINVAL;
+ 		goto free_err;
+ 	}
+-	imx290->hmax_min = (imx290->nlanes == 2) ? IMX290_HMAX_MIN_2LANE :
+-						 IMX290_HMAX_MIN_4LANE;
++	imx290->hmax_min = IMX290_HMAX_MIN;
+ 
+ 	dev_dbg(dev, "Using %u data lanes\n", imx290->nlanes);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0408-media-i2c-imx290-Fix-the-pixel-rate-at-148.5Mpix-s.patch b/target/linux/bcm27xx/patches-5.15/950-0408-media-i2c-imx290-Fix-the-pixel-rate-at-148.5Mpix-s.patch
new file mode 100644
index 0000000000..00d4e133cc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0408-media-i2c-imx290-Fix-the-pixel-rate-at-148.5Mpix-s.patch
@@ -0,0 +1,49 @@
+From ae89f74e9c2583b2d49ea0c6d5653aa820083c4e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Jun 2021 13:00:39 +0100
+Subject: [PATCH] media: i2c: imx290: Fix the pixel rate at 148.5Mpix/s
+
+Whilst the datasheet lists the link frequency changing between
+1080p and 720p modes, reality is that with the default blanking
+we have
+(1920 + 280) * (1080 + 45) * 60fps = 148.5MPix/s
+and
+(1280 + 2020) * (720 + 30) * 60fps = 148.5MPix/s
+and this reflects reality whether in 10 or 12 bit readout modes.
+
+How this relates to link frequency is unclear as it differs
+from the datasheet, but all exposure and frame rate calcs need
+the pixel rate to be correct, so make it so.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 16 +---------------
+ 1 file changed, 1 insertion(+), 15 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -853,23 +853,9 @@ static inline u8 imx290_get_link_freq_in
+ 	return imx290->current_mode->link_freq_index;
+ }
+ 
+-static s64 imx290_get_link_freq(struct imx290 *imx290)
+-{
+-	u8 index = imx290_get_link_freq_index(imx290);
+-
+-	return *(imx290_link_freqs_ptr(imx290) + index);
+-}
+-
+ static u64 imx290_calc_pixel_rate(struct imx290 *imx290)
+ {
+-	s64 link_freq = imx290_get_link_freq(imx290);
+-	u8 nlanes = imx290->nlanes;
+-	u64 pixel_rate;
+-
+-	/* pixel rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
+-	pixel_rate = link_freq * 2 * nlanes;
+-	do_div(pixel_rate, imx290->bpp);
+-	return pixel_rate;
++	return 148500000;
+ }
+ 
+ static int imx290_set_fmt(struct v4l2_subdev *sd,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0409-media-i2c-imx290-Fix-clock-setup-register-assignment.patch b/target/linux/bcm27xx/patches-5.15/950-0409-media-i2c-imx290-Fix-clock-setup-register-assignment.patch
new file mode 100644
index 0000000000..3b3d1f0a5a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0409-media-i2c-imx290-Fix-clock-setup-register-assignment.patch
@@ -0,0 +1,49 @@
+From 7958a59b6cf1b5f80d12282c9182cae72a1d4f16 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Jun 2021 17:27:46 +0100
+Subject: [PATCH] media: i2c: imx290: Fix clock setup register
+ assignments
+
+When the clock setups were added for the alternate external clocks,
+the settings for 2 lane 720p and 4 lane 1080p were transposed.
+2 lane 720p still worked, but 4 lane 1080p didn't.
+
+Correct the assignments.
+
+Fixes: 6b0c094a5b58 (media: i2c: imx290: Add support for 74.25MHz clock")
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -485,10 +485,10 @@ static const struct imx290_mode imx290_m
+ 		.lane_data = imx290_720p_2lane_settings,
+ 		.lane_data_size = ARRAY_SIZE(imx290_720p_2lane_settings),
+ 		.clk_data = {
+-			[CLK_37_125] = imx290_37_125mhz_clock_1080p,
+-			[CLK_74_25] = imx290_74_250mhz_clock_1080p,
++			[CLK_37_125] = imx290_37_125mhz_clock_720p,
++			[CLK_74_25] = imx290_74_250mhz_clock_720p,
+ 		},
+-		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_1080p),
++		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_720p),
+ 	},
+ };
+ 
+@@ -510,10 +510,10 @@ static const struct imx290_mode imx290_m
+ 		.lane_data = imx290_1080p_4lane_settings,
+ 		.lane_data_size = ARRAY_SIZE(imx290_1080p_4lane_settings),
+ 		.clk_data = {
+-			[CLK_37_125] = imx290_37_125mhz_clock_720p,
+-			[CLK_74_25] = imx290_74_250mhz_clock_720p,
++			[CLK_37_125] = imx290_37_125mhz_clock_1080p,
++			[CLK_74_25] = imx290_74_250mhz_clock_1080p,
+ 		},
+-		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_720p),
++		.clk_size = ARRAY_SIZE(imx290_37_125mhz_clock_1080p),
+ 	},
+ 	{
+ 		.width = 1280,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0410-media-rpivid-Fix-H265-aux-ent-reuse-of-the-same-slot.patch b/target/linux/bcm27xx/patches-5.15/950-0410-media-rpivid-Fix-H265-aux-ent-reuse-of-the-same-slot.patch
new file mode 100644
index 0000000000..318f2bf0f5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0410-media-rpivid-Fix-H265-aux-ent-reuse-of-the-same-slot.patch
@@ -0,0 +1,151 @@
+From a873fa8e44651d31d005199053a16cfc440ffc49 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 24 Jun 2021 14:43:49 +0100
+Subject: [PATCH] media: rpivid: Fix H265 aux ent reuse of the same
+ slot
+
+It is legitimate, though unusual, for an aux ent associated with a slot
+to be selected in phase 0 before a previous selection has been used and
+released in phase 2. Fix such that if the slot is found to be in use
+that the aux ent associated with it is reused rather than an new aux
+ent being created. This fixes a problem where when the first aux ent
+was released the second was lost track of.
+
+This bug spotted in Nick's testing. It may explain some other occasional,
+unreliable decode error reports where dmesg included "Missing DPB AUX
+ent" logging.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid_h265.c | 75 ++++++++++++++--------
+ 1 file changed, 49 insertions(+), 26 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -371,7 +371,8 @@ static void aux_q_free(struct rpivid_ctx
+ 	kfree(aq);
+ }
+ 
+-static struct rpivid_q_aux *aux_q_alloc(struct rpivid_ctx *const ctx)
++static struct rpivid_q_aux *aux_q_alloc(struct rpivid_ctx *const ctx,
++					const unsigned int q_index)
+ {
+ 	struct rpivid_dev *const dev = ctx->dev;
+ 	struct rpivid_q_aux *const aq = kzalloc(sizeof(*aq), GFP_KERNEL);
+@@ -379,11 +380,17 @@ static struct rpivid_q_aux *aux_q_alloc(
+ 	if (!aq)
+ 		return NULL;
+ 
+-	aq->refcount = 1;
+ 	if (gptr_alloc(dev, &aq->col, ctx->colmv_picsize,
+ 		       DMA_ATTR_FORCE_CONTIGUOUS | DMA_ATTR_NO_KERNEL_MAPPING))
+ 		goto fail;
+ 
++	/*
++	 * Spinlock not required as called in P0 only and
++	 * aux checks done by _new
++	 */
++	aq->refcount = 1;
++	aq->q_index = q_index;
++	ctx->aux_ents[q_index] = aq;
+ 	return aq;
+ 
+ fail:
+@@ -398,22 +405,38 @@ static struct rpivid_q_aux *aux_q_new(st
+ 	unsigned long lockflags;
+ 
+ 	spin_lock_irqsave(&ctx->aux_lock, lockflags);
+-	aq = ctx->aux_free;
+-	if (aq) {
++	/*
++	 * If we already have this allocated to a slot then use that
++	 * and assume that it will all work itself out in the pipeline
++	 */
++	if ((aq = ctx->aux_ents[q_index]) != NULL) {
++		++aq->refcount;
++	} else if ((aq = ctx->aux_free) != NULL) {
+ 		ctx->aux_free = aq->next;
+ 		aq->next = NULL;
+ 		aq->refcount = 1;
++		aq->q_index = q_index;
++		ctx->aux_ents[q_index] = aq;
+ 	}
+ 	spin_unlock_irqrestore(&ctx->aux_lock, lockflags);
+ 
+-	if (!aq) {
+-		aq = aux_q_alloc(ctx);
+-		if (!aq)
+-			return NULL;
+-	}
++	if (!aq)
++		aq = aux_q_alloc(ctx, q_index);
++
++	return aq;
++}
++
++static struct rpivid_q_aux *aux_q_ref_idx(struct rpivid_ctx *const ctx,
++					  const int q_index)
++{
++	unsigned long lockflags;
++	struct rpivid_q_aux *aq;
++
++	spin_lock_irqsave(&ctx->aux_lock, lockflags);
++	if ((aq = ctx->aux_ents[q_index]) != NULL)
++		++aq->refcount;
++	spin_unlock_irqrestore(&ctx->aux_lock, lockflags);
+ 
+-	aq->q_index = q_index;
+-	ctx->aux_ents[q_index] = aq;
+ 	return aq;
+ }
+ 
+@@ -436,21 +459,21 @@ static void aux_q_release(struct rpivid_
+ 			  struct rpivid_q_aux **const paq)
+ {
+ 	struct rpivid_q_aux *const aq = *paq;
+-	*paq = NULL;
+-
+-	if (aq) {
+-		unsigned long lockflags;
++	unsigned long lockflags;
+ 
+-		spin_lock_irqsave(&ctx->aux_lock, lockflags);
++	if (!aq)
++		return;
+ 
+-		if (--aq->refcount == 0) {
+-			aq->next = ctx->aux_free;
+-			ctx->aux_free = aq;
+-			ctx->aux_ents[aq->q_index] = NULL;
+-		}
++	*paq = NULL;
+ 
+-		spin_unlock_irqrestore(&ctx->aux_lock, lockflags);
++	spin_lock_irqsave(&ctx->aux_lock, lockflags);
++	if (--aq->refcount == 0) {
++		aq->next = ctx->aux_free;
++		ctx->aux_free = aq;
++		ctx->aux_ents[aq->q_index] = NULL;
++		aq->q_index = ~0U;
+ 	}
++	spin_unlock_irqrestore(&ctx->aux_lock, lockflags);
+ }
+ 
+ static void aux_q_init(struct rpivid_ctx *const ctx)
+@@ -1958,12 +1981,12 @@ static void rpivid_h265_setup(struct rpi
+ 		}
+ 
+ 		if (use_aux) {
+-			dpb_q_aux[i] = aux_q_ref(ctx,
+-						 ctx->aux_ents[buffer_index]);
++			dpb_q_aux[i] = aux_q_ref_idx(ctx, buffer_index);
+ 			if (!dpb_q_aux[i])
+ 				v4l2_warn(&dev->v4l2_dev,
+-					  "Missing DPB AUX ent %d index=%d\n",
+-					  i, buffer_index);
++					  "Missing DPB AUX ent %d, timestamp=%lld, index=%d\n",
++					  i, (long long)sh->dpb[i].timestamp,
++					  buffer_index);
+ 		}
+ 
+ 		de->ref_addrs[i] =
diff --git a/target/linux/bcm27xx/patches-5.15/950-0411-media-i2c-ov9281-Remove-override-of-subdev-name.patch b/target/linux/bcm27xx/patches-5.15/950-0411-media-i2c-ov9281-Remove-override-of-subdev-name.patch
new file mode 100644
index 0000000000..1cea951297
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0411-media-i2c-ov9281-Remove-override-of-subdev-name.patch
@@ -0,0 +1,28 @@
+From 48d412bae5e11baee8cadbe89bbc84f9fff2819c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 28 Jun 2021 10:49:04 +0100
+Subject: [PATCH] media: i2c: ov9281: Remove override of subdev name
+
+From the original Rockchip driver, the subdev was renamed
+from the default to being "mov9281 <dev_name>" whereas the
+default would have been "ov9281 <dev_name>".
+
+Remove the override to drop back to the default rather than
+a vendor custom string.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -1197,8 +1197,6 @@ static int ov9281_probe(struct i2c_clien
+ 	if (ret < 0)
+ 		goto err_power_off;
+ 
+-	snprintf(sd->name, sizeof(sd->name), "m%s %s",
+-		 OV9281_NAME, dev_name(sd->dev));
+ 	ret = v4l2_async_register_subdev_sensor(sd);
+ 	if (ret) {
+ 		dev_err(dev, "v4l2 async register subdev failed\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0412-staging-vc04_services-isp-Set-the-YUV420-YVU420-form.patch b/target/linux/bcm27xx/patches-5.15/950-0412-staging-vc04_services-isp-Set-the-YUV420-YVU420-form.patch
new file mode 100644
index 0000000000..5a1fd59aed
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0412-staging-vc04_services-isp-Set-the-YUV420-YVU420-form.patch
@@ -0,0 +1,39 @@
+From c60a791052d1b3c2dcbd619ba7f4f0af75435e84 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 29 Jun 2021 12:50:58 +0100
+Subject: [PATCH] staging: vc04_services: isp: Set the YUV420/YVU420
+ format stride to 64 bytes
+
+The bcm2835 ISP requires the base address of all input/output planes to have 32
+byte alignment. Using a Y stride of 32 bytes would not guarantee that the V
+plane would fulfil this, e.g. a height of 650 lines would mean the V plane
+buffer is not 32 byte aligned for YUV420 formats.
+
+Having a Y stride of 64 bytes would ensure both U and V planes have a 32 byte
+alignment, as the luma height will always be an even number of lines.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
+@@ -48,7 +48,7 @@ static const struct bcm2835_isp_fmt supp
+ 		/* YUV formats */
+ 		.fourcc		    = V4L2_PIX_FMT_YUV420,
+ 		.depth		    = 8,
+-		.bytesperline_align = 32,
++		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_I420,
+ 		.size_multiplier_x2 = 3,
+ 		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
+@@ -57,7 +57,7 @@ static const struct bcm2835_isp_fmt supp
+ 	}, {
+ 		.fourcc		    = V4L2_PIX_FMT_YVU420,
+ 		.depth		    = 8,
+-		.bytesperline_align = 32,
++		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_YV12,
+ 		.size_multiplier_x2 = 3,
+ 		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0413-Documentation-devicetree-Add-documentation-for-imx37.patch b/target/linux/bcm27xx/patches-5.15/950-0413-Documentation-devicetree-Add-documentation-for-imx37.patch
new file mode 100644
index 0000000000..77c44cf13c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0413-Documentation-devicetree-Add-documentation-for-imx37.patch
@@ -0,0 +1,142 @@
+From a307b7b21da2c1b61226a5f1b2b56b6582fe7cc4 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 29 Jun 2021 14:38:23 +0100
+Subject: [PATCH] Documentation: devicetree: Add documentation for
+ imx378 sensor
+
+The imx378 sensor is compatible with the imx477 and shares common
+device tree settings.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ .../devicetree/bindings/media/i2c/imx378.yaml | 113 ++++++++++++++++++
+ MAINTAINERS                                   |   1 +
+ 2 files changed, 114 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/i2c/imx378.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/i2c/imx378.yaml
+@@ -0,0 +1,113 @@
++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/media/i2c/imx378.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Sony 1/2.3-Inch 12Mpixel CMOS Digital Image Sensor
++
++maintainers:
++  - Naushir Patuck <naush@raspberypi.com>
++
++description: |-
++  The Sony IMX378 is a 1/2.3-inch CMOS active pixel digital image sensor
++  with an active array size of 4056H x 3040V. It is programmable through
++  I2C interface. The I2C address is fixed to 0x1A as per sensor data sheet.
++  Image data is sent through MIPI CSI-2, which is configured as either 2 or
++  4 data lanes.
++
++properties:
++  compatible:
++    const: sony,imx378
++
++  reg:
++    description: I2C device address
++    maxItems: 1
++
++  clocks:
++    maxItems: 1
++
++  VDIG-supply:
++    description:
++      Digital I/O voltage supply, 1.05 volts
++
++  VANA-supply:
++    description:
++      Analog voltage supply, 2.8 volts
++
++  VDDL-supply:
++    description:
++      Digital core voltage supply, 1.8 volts
++
++  reset-gpios:
++    description: |-
++      Reference to the GPIO connected to the xclr pin, if any.
++      Must be released (set high) after all supplies and INCK are applied.
++
++  # See ../video-interfaces.txt for more details
++  port:
++    type: object
++    properties:
++      endpoint:
++        type: object
++        properties:
++          data-lanes:
++            description: |-
++              The sensor supports either two-lane, or four-lane operation.
++              For two-lane operation the property must be set to <1 2>.
++            items:
++              - const: 1
++              - const: 2
++
++          clock-noncontinuous:
++            type: boolean
++            description: |-
++              MIPI CSI-2 clock is non-continuous if this property is present,
++              otherwise it's continuous.
++
++          link-frequencies:
++            allOf:
++              - $ref: /schemas/types.yaml#/definitions/uint64-array
++            description:
++              Allowed data bus frequencies.
++
++        required:
++          - link-frequencies
++
++required:
++  - compatible
++  - reg
++  - clocks
++  - VANA-supply
++  - VDIG-supply
++  - VDDL-supply
++  - port
++
++additionalProperties: false
++
++examples:
++  - |
++    i2c0 {
++        #address-cells = <1>;
++        #size-cells = <0>;
++
++        imx378: sensor@10 {
++            compatible = "sony,imx378";
++            reg = <0x1a>;
++            clocks = <&imx378_clk>;
++            VANA-supply = <&imx378_vana>;   /* 2.8v */
++            VDIG-supply = <&imx378_vdig>;   /* 1.05v */
++            VDDL-supply = <&imx378_vddl>;   /* 1.8v */
++
++            port {
++                imx378_0: endpoint {
++                    remote-endpoint = <&csi1_ep>;
++                    data-lanes = <1 2>;
++                    clock-noncontinuous;
++                    link-frequencies = /bits/ 64 <450000000>;
++                };
++            };
++        };
++    };
++
++...
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -17528,6 +17528,7 @@ M:	Raspberry Pi Kernel Maintenance <kern
+ L:	linux-media@vger.kernel.org
+ S:	Maintained
+ T:	git git://linuxtv.org/media_tree.git
++F:	Documentation/devicetree/bindings/media/i2c/imx378.yaml
+ F:	Documentation/devicetree/bindings/media/i2c/imx477.yaml
+ F:	drivers/media/i2c/imx477.c
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0414-media-i2c-imx477-Extend-driver-to-support-imx378-sen.patch b/target/linux/bcm27xx/patches-5.15/950-0414-media-i2c-imx477-Extend-driver-to-support-imx378-sen.patch
new file mode 100644
index 0000000000..3cd1ff6b1e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0414-media-i2c-imx477-Extend-driver-to-support-imx378-sen.patch
@@ -0,0 +1,190 @@
+From 99a58cae54a24652ab2e088d0eec2a1a31b22d86 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 29 Jun 2021 14:43:01 +0100
+Subject: [PATCH] media: i2c: imx477: Extend driver to support imx378
+ sensor
+
+The imx378 sensor is almost identical to the imx477 and can be
+supported as a "compatible" sensor with just a few extra register
+writes.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/Kconfig  |  2 +-
+ drivers/media/i2c/imx477.c | 68 +++++++++++++++++++++++++++++++++-----
+ 2 files changed, 60 insertions(+), 10 deletions(-)
+
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -823,7 +823,7 @@ config VIDEO_IMX477
+ 	depends on MEDIA_CAMERA_SUPPORT
+ 	help
+ 	  This is a Video4Linux2 sensor driver for the Sony
+-	  IMX477 camera.
++	  IMX477 camera. Also supports the Sony IMX378.
+ 
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called imx477.
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -12,6 +12,7 @@
+ #include <linux/gpio/consumer.h>
+ #include <linux/i2c.h>
+ #include <linux/module.h>
++#include <linux/of_device.h>
+ #include <linux/pm_runtime.h>
+ #include <linux/regulator/consumer.h>
+ #include <media/v4l2-ctrls.h>
+@@ -26,6 +27,7 @@
+ /* Chip ID */
+ #define IMX477_REG_CHIP_ID		0x0016
+ #define IMX477_CHIP_ID			0x0477
++#define IMX378_CHIP_ID			0x0378
+ 
+ #define IMX477_REG_MODE_SELECT		0x0100
+ #define IMX477_MODE_STANDBY		0x00
+@@ -1069,6 +1071,11 @@ static const char * const imx477_supply_
+ #define IMX477_XCLR_MIN_DELAY_US	8000
+ #define IMX477_XCLR_DELAY_RANGE_US	1000
+ 
++struct imx477_compatible_data {
++	unsigned int chip_id;
++	struct imx477_reg_list extra_regs;
++};
++
+ struct imx477 {
+ 	struct v4l2_subdev sd;
+ 	struct media_pad pad[NUM_PADS];
+@@ -1107,6 +1114,9 @@ struct imx477 {
+ 
+ 	/* Current long exposure factor in use. Set through V4L2_CID_VBLANK */
+ 	unsigned int long_exp_shift;
++
++	/* Any extra information related to different compatible sensors */
++	const struct imx477_compatible_data *compatible_data;
+ };
+ 
+ static inline struct imx477 *to_imx477(struct v4l2_subdev *_sd)
+@@ -1673,11 +1683,18 @@ static int imx477_start_streaming(struct
+ {
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+ 	const struct imx477_reg_list *reg_list;
++	const struct imx477_reg_list *extra_regs;
+ 	int ret;
+ 
+ 	if (!imx477->common_regs_written) {
+ 		ret = imx477_write_regs(imx477, mode_common_regs,
+ 					ARRAY_SIZE(mode_common_regs));
++		if (!ret) {
++			extra_regs = &imx477->compatible_data->extra_regs;
++			ret = imx477_write_regs(imx477,	extra_regs->regs,
++						extra_regs->num_of_regs);
++		}
++
+ 		if (ret) {
+ 			dev_err(&client->dev, "%s failed to set common settings\n",
+ 				__func__);
+@@ -1863,7 +1880,7 @@ static int imx477_get_regulators(struct
+ }
+ 
+ /* Verify chip ID */
+-static int imx477_identify_module(struct imx477 *imx477)
++static int imx477_identify_module(struct imx477 *imx477, u32 expected_id)
+ {
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+ 	int ret;
+@@ -1873,16 +1890,18 @@ static int imx477_identify_module(struct
+ 			      IMX477_REG_VALUE_16BIT, &val);
+ 	if (ret) {
+ 		dev_err(&client->dev, "failed to read chip id %x, with error %d\n",
+-			IMX477_CHIP_ID, ret);
++			expected_id, ret);
+ 		return ret;
+ 	}
+ 
+-	if (val != IMX477_CHIP_ID) {
++	if (val != expected_id) {
+ 		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
+-			IMX477_CHIP_ID, val);
++			expected_id, val);
+ 		return -EIO;
+ 	}
+ 
++	dev_info(&client->dev, "Device found is imx%x\n", val);
++
+ 	return 0;
+ }
+ 
+@@ -2078,10 +2097,39 @@ error_out:
+ 	return ret;
+ }
+ 
++static const struct imx477_compatible_data imx477_compatible = {
++	.chip_id = IMX477_CHIP_ID,
++	.extra_regs = {
++		.num_of_regs = 0,
++		.regs = NULL
++	}
++};
++
++static const struct imx477_reg imx378_regs[] = {
++	{0x3e35, 0x01},
++	{0x4421, 0x08},
++	{0x3ff9, 0x00},
++};
++
++static const struct imx477_compatible_data imx378_compatible = {
++	.chip_id = IMX378_CHIP_ID,
++	.extra_regs = {
++		.num_of_regs = ARRAY_SIZE(imx378_regs),
++		.regs = imx378_regs
++	}
++};
++
++static const struct of_device_id imx477_dt_ids[] = {
++	{ .compatible = "sony,imx477", .data = &imx477_compatible },
++	{ .compatible = "sony,imx378", .data = &imx378_compatible },
++	{ /* sentinel */ }
++};
++
+ static int imx477_probe(struct i2c_client *client)
+ {
+ 	struct device *dev = &client->dev;
+ 	struct imx477 *imx477;
++	const struct of_device_id *match;
+ 	int ret;
+ 
+ 	imx477 = devm_kzalloc(&client->dev, sizeof(*imx477), GFP_KERNEL);
+@@ -2090,6 +2138,12 @@ static int imx477_probe(struct i2c_clien
+ 
+ 	v4l2_i2c_subdev_init(&imx477->sd, client, &imx477_subdev_ops);
+ 
++	match = of_match_device(imx477_dt_ids, dev);
++	if (!match)
++		return -ENODEV;
++	imx477->compatible_data =
++		(const struct imx477_compatible_data *)match->data;
++
+ 	/* Check the hardware configuration in device tree */
+ 	if (imx477_check_hwcfg(dev))
+ 		return -EINVAL;
+@@ -2126,7 +2180,7 @@ static int imx477_probe(struct i2c_clien
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = imx477_identify_module(imx477);
++	ret = imx477_identify_module(imx477, imx477->compatible_data->chip_id);
+ 	if (ret)
+ 		goto error_power_off;
+ 
+@@ -2198,10 +2252,6 @@ static int imx477_remove(struct i2c_clie
+ 	return 0;
+ }
+ 
+-static const struct of_device_id imx477_dt_ids[] = {
+-	{ .compatible = "sony,imx477" },
+-	{ /* sentinel */ }
+-};
+ MODULE_DEVICE_TABLE(of, imx477_dt_ids);
+ 
+ static const struct dev_pm_ops imx477_pm_ops = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0415-dt-bindings-clk-raspberrypi-Remove-unused-property.patch b/target/linux/bcm27xx/patches-5.15/950-0415-dt-bindings-clk-raspberrypi-Remove-unused-property.patch
new file mode 100644
index 0000000000..7d53b5737f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0415-dt-bindings-clk-raspberrypi-Remove-unused-property.patch
@@ -0,0 +1,40 @@
+From 4b7d33bb45d2f71ae46bfa3af02a3c8610ad3881 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 23 Jun 2021 11:47:38 +0200
+Subject: [PATCH] dt-bindings: clk: raspberrypi: Remove unused property
+
+The raspberrypi,firmware property has been documented as required in the
+binding but was never actually used in the final version of the binding.
+Remove it.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ .../bindings/clock/raspberrypi,firmware-clocks.yaml        | 7 -------
+ 1 file changed, 7 deletions(-)
+
+--- a/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
++++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
+@@ -16,15 +16,9 @@ properties:
+   compatible:
+     const: raspberrypi,firmware-clocks
+ 
+-  raspberrypi,firmware:
+-    $ref: /schemas/types.yaml#/definitions/phandle
+-    description: >
+-      Phandle to the mailbox node to communicate with the firmware.
+-
+ required:
+   - "#clock-cells"
+   - compatible
+-  - raspberrypi,firmware
+ 
+ additionalProperties: false
+ 
+@@ -32,7 +26,6 @@ examples:
+   - |
+     firmware_clocks: firmware-clocks {
+         compatible = "raspberrypi,firmware-clocks";
+-        raspberrypi,firmware = <&firmware>;
+         #clock-cells = <1>;
+     };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0416-dt-bindings-display-vc4-Add-phandle-to-the-firmware.patch b/target/linux/bcm27xx/patches-5.15/950-0416-dt-bindings-display-vc4-Add-phandle-to-the-firmware.patch
new file mode 100644
index 0000000000..478056d862
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0416-dt-bindings-display-vc4-Add-phandle-to-the-firmware.patch
@@ -0,0 +1,31 @@
+From 895b50c0855bf5c19525249c388a4b72bf7b0302 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 23 Jun 2021 11:48:35 +0200
+Subject: [PATCH] dt-bindings: display: vc4: Add phandle to the
+ firmware
+
+The vc4 driver will need to tell the firmware that it takes over the
+display for the firmware to free its resources (lower the clock, free
+some memory, etc.)
+
+Let's add an optional phandle to our firmware node.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ .../devicetree/bindings/display/brcm,bcm2835-vc4.yaml        | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml
++++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml
+@@ -21,6 +21,11 @@ properties:
+       - brcm,bcm2835-vc4
+       - brcm,cygnus-vc4
+ 
++  raspberrypi,firmware:
++    $ref: /schemas/types.yaml#/definitions/phandle
++    description: >
++      Phandle to the mailbox node to communicate with the firmware.
++
+ required:
+   - compatible
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch b/target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch
new file mode 100644
index 0000000000..9bec99f490
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch
@@ -0,0 +1,24 @@
+From d9f70317612c5b3b558fd4b52c57e52832d34d52 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 8 Jul 2021 13:48:11 +0100
+Subject: [PATCH] bcm2711_thermal: Don't clamp temperature at zero
+
+The temperature sensor is valid below zero and the linux framework is happy with it.
+
+See: https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=315382
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/thermal/broadcom/bcm2711_thermal.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/thermal/broadcom/bcm2711_thermal.c
++++ b/drivers/thermal/broadcom/bcm2711_thermal.c
+@@ -52,7 +52,7 @@ static int bcm2711_get_temp(void *data,
+ 	/* Convert a HW code to a temperature reading (millidegree celsius) */
+ 	t = slope * val + offset;
+ 
+-	*temp = t < 0 ? 0 : t;
++	*temp = t;
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0418-media-bcm2835-unicam-Forward-input-status-from-subde.patch b/target/linux/bcm27xx/patches-5.15/950-0418-media-bcm2835-unicam-Forward-input-status-from-subde.patch
new file mode 100644
index 0000000000..c54d1840ea
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0418-media-bcm2835-unicam-Forward-input-status-from-subde.patch
@@ -0,0 +1,53 @@
+From 4380b6913ec718c6b0503015e027098da0bccb6e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jakub=20Van=C4=9Bk?= <linuxtardis@gmail.com>
+Date: Wed, 7 Jul 2021 22:48:20 +0200
+Subject: [PATCH] media: bcm2835-unicam: Forward input status from
+ subdevice
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The vidioc_enum_input() v4l2 ioctl is capable of returning
+sensor/input status as well. This is used in current
+GStreamer HEAD for signal detection [1].
+
+bcm2835-unicam does handle this syscall, but it didn't ask
+the subdevice driver about the input status. The input then
+appeared as always present.
+
+This commit adds the necessary query. There is a precedent for
+this - the R-Car VIN V4L2 driver does a similar call [2].
+
+[1]: https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/blob/ce0be27caf69aa9d96b73bc2b50737451b6f6936/sys/v4l2/gstv4l2src.c#L553
+[2]: https://github.com/raspberrypi/linux/blob/7fb9d006d3ff3baf2e205e0c85c4e4fd0a64fcd0/drivers/media/platform/rcar-vin/rcar-v4l2.c#L548
+
+Signed-off-by: Jakub Vaněk <linuxtardis@gmail.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -1810,6 +1810,7 @@ static int unicam_enum_input(struct file
+ {
+ 	struct unicam_node *node = video_drvdata(file);
+ 	struct unicam_device *dev = node->dev;
++	int ret;
+ 
+ 	if (inp->index != 0)
+ 		return -EINVAL;
+@@ -1826,6 +1827,14 @@ static int unicam_enum_input(struct file
+ 		inp->capabilities = 0;
+ 		inp->std = 0;
+ 	}
++
++	if (v4l2_subdev_has_op(dev->sensor, video, g_input_status)) {
++		ret = v4l2_subdev_call(dev->sensor, video, g_input_status,
++				       &inp->status);
++		if (ret < 0)
++			return ret;
++	}
++
+ 	snprintf(inp->name, sizeof(inp->name), "Camera 0");
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0419-media-v4l2-subdev-add-subdev-wide-state-struct.patch b/target/linux/bcm27xx/patches-5.15/950-0419-media-v4l2-subdev-add-subdev-wide-state-struct.patch
new file mode 100644
index 0000000000..0dc53424b5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0419-media-v4l2-subdev-add-subdev-wide-state-struct.patch
@@ -0,0 +1,477 @@
+From c284f9ae98f0c853d93fb7fd3a41e457496fba41 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 15 Jul 2021 15:55:22 +0100
+Subject: [PATCH] media: v4l2-subdev: add subdev-wide state struct
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/media/i2c/imx290.c                    |  9 +++---
+ drivers/media/i2c/imx477.c                    | 30 ++++++++++---------
+ drivers/media/i2c/irs1125.c                   |  8 ++---
+ drivers/media/i2c/ov9281.c                    | 25 +++++++++-------
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 18 +++++------
+ .../platform/rockchip/rkisp1/rkisp1-isp.c     | 18 +++++++++++
+ .../platform/rockchip/rkisp1/rkisp1-resizer.c | 18 +++++++++++
+ .../bcm2835-isp/bcm2835-v4l2-isp.c            |  4 +--
+ 8 files changed, 86 insertions(+), 44 deletions(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -988,12 +988,13 @@ static int imx290_write_current_format(s
+ }
+ 
+ static const struct v4l2_rect *
+-__imx290_get_pad_crop(struct imx290 *imx290, struct v4l2_subdev_pad_config *cfg,
++__imx290_get_pad_crop(struct imx290 *imx290,
++		      struct v4l2_subdev_state *sd_state,
+ 		      unsigned int pad, enum v4l2_subdev_format_whence which)
+ {
+ 	switch (which) {
+ 	case V4L2_SUBDEV_FORMAT_TRY:
+-		return v4l2_subdev_get_try_crop(&imx290->sd, cfg, pad);
++		return v4l2_subdev_get_try_crop(&imx290->sd, sd_state, pad);
+ 	case V4L2_SUBDEV_FORMAT_ACTIVE:
+ 		return &imx290->current_mode->crop;
+ 	}
+@@ -1002,7 +1003,7 @@ __imx290_get_pad_crop(struct imx290 *imx
+ }
+ 
+ static int imx290_get_selection(struct v4l2_subdev *sd,
+-				struct v4l2_subdev_pad_config *cfg,
++				struct v4l2_subdev_state *sd_state,
+ 				struct v4l2_subdev_selection *sel)
+ {
+ 	switch (sel->target) {
+@@ -1010,7 +1011,7 @@ static int imx290_get_selection(struct v
+ 		struct imx290 *imx290 = to_imx290(sd);
+ 
+ 		mutex_lock(&imx290->lock);
+-		sel->r = *__imx290_get_pad_crop(imx290, cfg, sel->pad,
++		sel->r = *__imx290_get_pad_crop(imx290, sd_state, sel->pad,
+ 						sel->which);
+ 		mutex_unlock(&imx290->lock);
+ 
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1254,9 +1254,9 @@ static int imx477_open(struct v4l2_subde
+ {
+ 	struct imx477 *imx477 = to_imx477(sd);
+ 	struct v4l2_mbus_framefmt *try_fmt_img =
+-		v4l2_subdev_get_try_format(sd, fh->pad, IMAGE_PAD);
++		v4l2_subdev_get_try_format(sd, fh->state, IMAGE_PAD);
+ 	struct v4l2_mbus_framefmt *try_fmt_meta =
+-		v4l2_subdev_get_try_format(sd, fh->pad, METADATA_PAD);
++		v4l2_subdev_get_try_format(sd, fh->state, METADATA_PAD);
+ 	struct v4l2_rect *try_crop;
+ 
+ 	mutex_lock(&imx477->mutex);
+@@ -1275,7 +1275,7 @@ static int imx477_open(struct v4l2_subde
+ 	try_fmt_meta->field = V4L2_FIELD_NONE;
+ 
+ 	/* Initialize try_crop */
+-	try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, IMAGE_PAD);
++	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, IMAGE_PAD);
+ 	try_crop->left = IMX477_PIXEL_ARRAY_LEFT;
+ 	try_crop->top = IMX477_PIXEL_ARRAY_TOP;
+ 	try_crop->width = IMX477_PIXEL_ARRAY_WIDTH;
+@@ -1403,7 +1403,7 @@ static const struct v4l2_ctrl_ops imx477
+ };
+ 
+ static int imx477_enum_mbus_code(struct v4l2_subdev *sd,
+-				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_state *sd_state,
+ 				 struct v4l2_subdev_mbus_code_enum *code)
+ {
+ 	struct imx477 *imx477 = to_imx477(sd);
+@@ -1428,7 +1428,7 @@ static int imx477_enum_mbus_code(struct
+ }
+ 
+ static int imx477_enum_frame_size(struct v4l2_subdev *sd,
+-				  struct v4l2_subdev_pad_config *cfg,
++				  struct v4l2_subdev_state *sd_state,
+ 				  struct v4l2_subdev_frame_size_enum *fse)
+ {
+ 	struct imx477 *imx477 = to_imx477(sd);
+@@ -1494,7 +1494,7 @@ static void imx477_update_metadata_pad_f
+ }
+ 
+ static int imx477_get_pad_format(struct v4l2_subdev *sd,
+-				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_state *sd_state,
+ 				 struct v4l2_subdev_format *fmt)
+ {
+ 	struct imx477 *imx477 = to_imx477(sd);
+@@ -1506,7 +1506,8 @@ static int imx477_get_pad_format(struct
+ 
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ 		struct v4l2_mbus_framefmt *try_fmt =
+-			v4l2_subdev_get_try_format(&imx477->sd, cfg, fmt->pad);
++			v4l2_subdev_get_try_format(&imx477->sd, sd_state,
++						   fmt->pad);
+ 		/* update the code which could change due to vflip or hflip: */
+ 		try_fmt->code = fmt->pad == IMAGE_PAD ?
+ 				imx477_get_format_code(imx477, try_fmt->code) :
+@@ -1574,7 +1575,7 @@ static void imx477_set_framing_limits(st
+ }
+ 
+ static int imx477_set_pad_format(struct v4l2_subdev *sd,
+-				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_state *sd_state,
+ 				 struct v4l2_subdev_format *fmt)
+ {
+ 	struct v4l2_mbus_framefmt *framefmt;
+@@ -1603,7 +1604,7 @@ static int imx477_set_pad_format(struct
+ 					      fmt->format.height);
+ 		imx477_update_image_pad_format(imx477, mode, fmt);
+ 		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-			framefmt = v4l2_subdev_get_try_format(sd, cfg,
++			framefmt = v4l2_subdev_get_try_format(sd, sd_state,
+ 							      fmt->pad);
+ 			*framefmt = fmt->format;
+ 		} else {
+@@ -1613,7 +1614,7 @@ static int imx477_set_pad_format(struct
+ 		}
+ 	} else {
+ 		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-			framefmt = v4l2_subdev_get_try_format(sd, cfg,
++			framefmt = v4l2_subdev_get_try_format(sd, sd_state,
+ 							      fmt->pad);
+ 			*framefmt = fmt->format;
+ 		} else {
+@@ -1628,12 +1629,13 @@ static int imx477_set_pad_format(struct
+ }
+ 
+ static const struct v4l2_rect *
+-__imx477_get_pad_crop(struct imx477 *imx477, struct v4l2_subdev_pad_config *cfg,
++__imx477_get_pad_crop(struct imx477 *imx477,
++		      struct v4l2_subdev_state *sd_state,
+ 		      unsigned int pad, enum v4l2_subdev_format_whence which)
+ {
+ 	switch (which) {
+ 	case V4L2_SUBDEV_FORMAT_TRY:
+-		return v4l2_subdev_get_try_crop(&imx477->sd, cfg, pad);
++		return v4l2_subdev_get_try_crop(&imx477->sd, sd_state, pad);
+ 	case V4L2_SUBDEV_FORMAT_ACTIVE:
+ 		return &imx477->mode->crop;
+ 	}
+@@ -1642,7 +1644,7 @@ __imx477_get_pad_crop(struct imx477 *imx
+ }
+ 
+ static int imx477_get_selection(struct v4l2_subdev *sd,
+-				struct v4l2_subdev_pad_config *cfg,
++				struct v4l2_subdev_state *sd_state,
+ 				struct v4l2_subdev_selection *sel)
+ {
+ 	switch (sel->target) {
+@@ -1650,7 +1652,7 @@ static int imx477_get_selection(struct v
+ 		struct imx477 *imx477 = to_imx477(sd);
+ 
+ 		mutex_lock(&imx477->mutex);
+-		sel->r = *__imx477_get_pad_crop(imx477, cfg, sel->pad,
++		sel->r = *__imx477_get_pad_crop(imx477, sd_state, sel->pad,
+ 						sel->which);
+ 		mutex_unlock(&imx477->mutex);
+ 
+--- a/drivers/media/i2c/irs1125.c
++++ b/drivers/media/i2c/irs1125.c
+@@ -562,8 +562,8 @@ static const struct v4l2_subdev_video_op
+ };
+ 
+ static int irs1125_enum_mbus_code(struct v4l2_subdev *sd,
+-				  struct v4l2_subdev_pad_config *cfg,
+-	struct v4l2_subdev_mbus_code_enum *code)
++				  struct v4l2_subdev_state *sd_state,
++				  struct v4l2_subdev_mbus_code_enum *code)
+ {
+ 	if (code->index > 0)
+ 		return -EINVAL;
+@@ -574,7 +574,7 @@ static int irs1125_enum_mbus_code(struct
+ }
+ 
+ static int irs1125_set_get_fmt(struct v4l2_subdev *sd,
+-			       struct v4l2_subdev_pad_config *cfg,
++			       struct v4l2_subdev_state *sd_state,
+ 			       struct v4l2_subdev_format *format)
+ {
+ 	struct v4l2_mbus_framefmt *fmt = &format->format;
+@@ -930,7 +930,7 @@ static int irs1125_detect(struct v4l2_su
+ static int irs1125_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+ {
+ 	struct v4l2_mbus_framefmt *format =
+-	v4l2_subdev_get_try_format(sd, fh->pad, 0);
++	v4l2_subdev_get_try_format(sd, fh->state, 0);
+ 
+ 	format->code = MEDIA_BUS_FMT_Y12_1X12;
+ 	format->width = IRS1125_WINDOW_WIDTH_DEF;
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -491,7 +491,7 @@ ov9281_find_best_fit(struct v4l2_subdev_
+ }
+ 
+ static int ov9281_set_fmt(struct v4l2_subdev *sd,
+-			  struct v4l2_subdev_pad_config *cfg,
++			  struct v4l2_subdev_state *sd_state,
+ 			  struct v4l2_subdev_format *fmt)
+ {
+ 	struct ov9281 *ov9281 = to_ov9281(sd);
+@@ -516,7 +516,7 @@ static int ov9281_set_fmt(struct v4l2_su
+ 		V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
+ 
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-		*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
++		*v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format;
+ 	} else {
+ 		ov9281->cur_mode = mode;
+ 		ov9281->code = fmt->format.code;
+@@ -542,7 +542,7 @@ static int ov9281_set_fmt(struct v4l2_su
+ }
+ 
+ static int ov9281_get_fmt(struct v4l2_subdev *sd,
+-			  struct v4l2_subdev_pad_config *cfg,
++			  struct v4l2_subdev_state *sd_state,
+ 			  struct v4l2_subdev_format *fmt)
+ {
+ 	struct ov9281 *ov9281 = to_ov9281(sd);
+@@ -550,7 +550,8 @@ static int ov9281_get_fmt(struct v4l2_su
+ 
+ 	mutex_lock(&ov9281->mutex);
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-		fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
++		fmt->format = *v4l2_subdev_get_try_format(sd, sd_state,
++							  fmt->pad);
+ 	} else {
+ 		fmt->format.width = mode->width;
+ 		fmt->format.height = mode->height;
+@@ -572,7 +573,7 @@ static int ov9281_get_fmt(struct v4l2_su
+ }
+ 
+ static int ov9281_enum_mbus_code(struct v4l2_subdev *sd,
+-				 struct v4l2_subdev_pad_config *cfg,
++				 struct v4l2_subdev_state *sd_state,
+ 				 struct v4l2_subdev_mbus_code_enum *code)
+ {
+ 	switch (code->index) {
+@@ -590,7 +591,7 @@ static int ov9281_enum_mbus_code(struct
+ }
+ 
+ static int ov9281_enum_frame_sizes(struct v4l2_subdev *sd,
+-				   struct v4l2_subdev_pad_config *cfg,
++				   struct v4l2_subdev_state *sd_state,
+ 				   struct v4l2_subdev_frame_size_enum *fse)
+ {
+ 	if (fse->index >= ARRAY_SIZE(supported_modes))
+@@ -658,12 +659,14 @@ static int ov9281_set_ctrl_vflip(struct
+ }
+ 
+ static const struct v4l2_rect *
+-__ov9281_get_pad_crop(struct ov9281 *ov9281, struct v4l2_subdev_pad_config *cfg,
++__ov9281_get_pad_crop(struct ov9281 *ov9281,
++		      struct v4l2_subdev_state *sd_state,
+ 		      unsigned int pad, enum v4l2_subdev_format_whence which)
+ {
+ 	switch (which) {
+ 	case V4L2_SUBDEV_FORMAT_TRY:
+-		return v4l2_subdev_get_try_crop(&ov9281->subdev, cfg, pad);
++		return v4l2_subdev_get_try_crop(&ov9281->subdev, sd_state,
++						pad);
+ 	case V4L2_SUBDEV_FORMAT_ACTIVE:
+ 		return &ov9281->cur_mode->crop;
+ 	}
+@@ -672,7 +675,7 @@ __ov9281_get_pad_crop(struct ov9281 *ov9
+ }
+ 
+ static int ov9281_get_selection(struct v4l2_subdev *sd,
+-				struct v4l2_subdev_pad_config *cfg,
++				struct v4l2_subdev_state *sd_state,
+ 				struct v4l2_subdev_selection *sel)
+ {
+ 	switch (sel->target) {
+@@ -680,7 +683,7 @@ static int ov9281_get_selection(struct v
+ 		struct ov9281 *ov9281 = to_ov9281(sd);
+ 
+ 		mutex_lock(&ov9281->mutex);
+-		sel->r = *__ov9281_get_pad_crop(ov9281, cfg, sel->pad,
++		sel->r = *__ov9281_get_pad_crop(ov9281, sd_state, sel->pad,
+ 						sel->which);
+ 		mutex_unlock(&ov9281->mutex);
+ 
+@@ -898,7 +901,7 @@ static int ov9281_open(struct v4l2_subde
+ {
+ 	struct ov9281 *ov9281 = to_ov9281(sd);
+ 	struct v4l2_mbus_framefmt *try_fmt =
+-				v4l2_subdev_get_try_format(sd, fh->pad, 0);
++				v4l2_subdev_get_try_format(sd, fh->state, 0);
+ 	const struct ov9281_mode *def_mode = &supported_modes[0];
+ 
+ 	mutex_lock(&ov9281->mutex);
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -444,7 +444,7 @@ struct unicam_device {
+ 	/* ptr to  sub device */
+ 	struct v4l2_subdev *sensor;
+ 	/* Pad config for the sensor */
+-	struct v4l2_subdev_pad_config *sensor_config;
++	struct v4l2_subdev_state *sensor_state;
+ 
+ 	enum v4l2_mbus_type bus_type;
+ 	/*
+@@ -595,7 +595,7 @@ static int __subdev_get_format(struct un
+ 	};
+ 	int ret;
+ 
+-	ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_config,
++	ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_state,
+ 			       &sd_fmt);
+ 	if (ret < 0)
+ 		return ret;
+@@ -619,7 +619,7 @@ static int __subdev_set_format(struct un
+ 
+ 	sd_fmt.format = *fmt;
+ 
+-	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
++	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_state,
+ 			       &sd_fmt);
+ 	if (ret < 0)
+ 		return ret;
+@@ -1095,7 +1095,7 @@ static int unicam_try_fmt_vid_cap(struct
+ 	 */
+ 	mbus_fmt->field = V4L2_FIELD_NONE;
+ 
+-	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
++	ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_state,
+ 			       &sd_fmt);
+ 	if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+ 		return ret;
+@@ -1117,7 +1117,7 @@ static int unicam_try_fmt_vid_cap(struct
+ 			mbus_fmt->code = fmt->code;
+ 
+ 			ret = v4l2_subdev_call(dev->sensor, pad, set_fmt,
+-					       dev->sensor_config, &sd_fmt);
++					       dev->sensor_state, &sd_fmt);
+ 			if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
+ 				return ret;
+ 
+@@ -2330,8 +2330,8 @@ static void unicam_release(struct kref *
+ 	v4l2_ctrl_handler_free(&unicam->ctrl_handler);
+ 	media_device_cleanup(&unicam->mdev);
+ 
+-	if (unicam->sensor_config)
+-		v4l2_subdev_free_pad_config(unicam->sensor_config);
++	if (unicam->sensor_state)
++		v4l2_subdev_free_state(unicam->sensor_state);
+ 
+ 	kfree(unicam);
+ }
+@@ -2593,8 +2593,8 @@ static int unicam_probe_complete(struct
+ 
+ 	unicam->v4l2_dev.notify = unicam_notify;
+ 
+-	unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
+-	if (!unicam->sensor_config)
++	unicam->sensor_state = v4l2_subdev_alloc_state(unicam->sensor);
++	if (!unicam->sensor_state)
+ 		return -ENOMEM;
+ 
+ 	unicam->sensor_embedded_data = (unicam->sensor->entity.num_pads >= 2);
+--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
++++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
+@@ -214,6 +214,12 @@ rkisp1_isp_get_pad_fmt(struct rkisp1_isp
+ 	struct v4l2_subdev_state state = {
+ 		.pads = isp->pad_cfg
+ 		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
+ 	if (which == V4L2_SUBDEV_FORMAT_TRY)
+ 		return v4l2_subdev_get_try_format(&isp->sd, sd_state, pad);
+ 	else
+@@ -228,6 +234,12 @@ rkisp1_isp_get_pad_crop(struct rkisp1_is
+ 	struct v4l2_subdev_state state = {
+ 		.pads = isp->pad_cfg
+ 		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
+ 	if (which == V4L2_SUBDEV_FORMAT_TRY)
+ 		return v4l2_subdev_get_try_crop(&isp->sd, sd_state, pad);
+ 	else
+@@ -1053,6 +1065,12 @@ int rkisp1_isp_register(struct rkisp1_de
+ 	struct v4l2_subdev_state state = {
+ 		.pads = rkisp1->isp.pad_cfg
+ 		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
+ 	struct rkisp1_isp *isp = &rkisp1->isp;
+ 	struct media_pad *pads = isp->pads;
+ 	struct v4l2_subdev *sd = &isp->sd;
+--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
++++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-resizer.c
+@@ -186,6 +186,12 @@ rkisp1_rsz_get_pad_fmt(struct rkisp1_res
+ 	struct v4l2_subdev_state state = {
+ 		.pads = rsz->pad_cfg
+ 		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
+ 	if (which == V4L2_SUBDEV_FORMAT_TRY)
+ 		return v4l2_subdev_get_try_format(&rsz->sd, sd_state, pad);
+ 	else
+@@ -200,6 +206,12 @@ rkisp1_rsz_get_pad_crop(struct rkisp1_re
+ 	struct v4l2_subdev_state state = {
+ 		.pads = rsz->pad_cfg
+ 		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
+ 	if (which == V4L2_SUBDEV_FORMAT_TRY)
+ 		return v4l2_subdev_get_try_crop(&rsz->sd, sd_state, pad);
+ 	else
+@@ -791,6 +803,12 @@ static int rkisp1_rsz_register(struct rk
+ 	struct v4l2_subdev_state state = {
+ 		.pads = rsz->pad_cfg
+ 		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
++	struct v4l2_subdev_state state = {
++		.pads = &state
++		};
+ 	static const char * const dev_names[] = {
+ 		RKISP1_RSZ_MP_DEV_NAME,
+ 		RKISP1_RSZ_SP_DEV_NAME
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -1463,7 +1463,7 @@ queue_cleanup:
+ }
+ 
+ /* Unregister one of the /dev/video<N> nodes associated with the ISP. */
+-static void unregister_node(struct bcm2835_isp_node *node)
++static void bcm2835_unregister_node(struct bcm2835_isp_node *node)
+ {
+ 	struct bcm2835_isp_dev *dev = node_get_dev(node);
+ 
+@@ -1666,7 +1666,7 @@ static int bcm2835_isp_remove(struct pla
+ 	media_controller_unregister(dev);
+ 
+ 	for (i = 0; i < BCM2835_ISP_NUM_NODES; i++)
+-		unregister_node(&dev->node[i]);
++		bcm2835_unregister_node(&dev->node[i]);
+ 
+ 	v4l2_device_unregister(&dev->v4l2_dev);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch b/target/linux/bcm27xx/patches-5.15/950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch
new file mode 100644
index 0000000000..318d107297
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch
@@ -0,0 +1,54 @@
+From d7bcb557c33523fdb3f51ac8e088cd809031ea3a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 19 May 2020 14:54:28 +0100
+Subject: [PATCH] drm/vc4: Adopt the dma configuration from the HVS or
+ V3D component
+
+vc4_drv isn't necessarily under the /soc node in DT as it is a
+virtual device, but it is the one that does the allocations.
+The DMA addresses are consumed by primarily the HVS or V3D, and
+those require VideoCore cache alias address mapping, and so will be
+under /soc.
+
+During probe find the a suitable device node for HVS or V3D,
+and adopt the DMA configuration of that node.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 18 ++++++++++++++++++
+ 1 file changed, 18 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -216,6 +216,14 @@ static void vc4_match_add_drivers(struct
+ 	}
+ }
+ 
++const struct of_device_id vc4_dma_range_matches[] = {
++	{ .compatible = "brcm,bcm2835-hvs" },
++	{ .compatible = "brcm,bcm2835-v3d" },
++	{ .compatible = "brcm,cygnus-v3d" },
++	{ .compatible = "brcm,vc4-v3d" },
++	{}
++};
++
+ static int vc4_drm_bind(struct device *dev)
+ {
+ 	struct platform_device *pdev = to_platform_device(dev);
+@@ -234,6 +242,16 @@ static int vc4_drm_bind(struct device *d
+ 		vc4_drm_driver.driver_features &= ~DRIVER_RENDER;
+ 	of_node_put(node);
+ 
++	node = of_find_matching_node_and_match(NULL, vc4_dma_range_matches,
++					       NULL);
++	if (node) {
++		ret = of_dma_configure(dev, node, true);
++		of_node_put(node);
++
++		if (ret)
++			return ret;
++	}
++
+ 	vc4 = devm_drm_dev_alloc(dev, &vc4_drm_driver, struct vc4_dev, base);
+ 	if (IS_ERR(vc4))
+ 		return PTR_ERR(vc4);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0421-Support-RPi-DPI-interface-in-mode6-for-18-bit-color.patch b/target/linux/bcm27xx/patches-5.15/950-0421-Support-RPi-DPI-interface-in-mode6-for-18-bit-color.patch
new file mode 100644
index 0000000000..9e85746b38
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0421-Support-RPi-DPI-interface-in-mode6-for-18-bit-color.patch
@@ -0,0 +1,214 @@
+From a08e51a8b93f857cde93ddd7730c1cdedb6ccdd1 Mon Sep 17 00:00:00 2001
+From: Joerg Quinten <aBUGSworstnightmare@gmail.com>
+Date: Fri, 18 Jun 2021 13:02:29 +0200
+Subject: [PATCH] Support RPi DPI interface in mode6 for 18-bit color
+
+A matching media bus format was added and an overlay for using it,
+both with FB and VC4 was added as well.
+
+Signed-off-by: Joerg Quinten <aBUGSworstnightmare@gmail.com>
+---
+ .../bindings/display/panel/panel-simple.yaml  |  2 +
+ .../media/v4l/subdev-formats.rst              | 74 +++++++++++++++++++
+ drivers/gpu/drm/panel/panel-simple.c          | 35 +++++++++
+ drivers/gpu/drm/vc4/vc4_dpi.c                 | 10 +++
+ include/uapi/linux/media-bus-format.h         |  4 +-
+ 5 files changed, 124 insertions(+), 1 deletion(-)
+
+--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
++++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+@@ -162,6 +162,8 @@ properties:
+       - ivo,m133nwf4-r0
+         # Innolux AT043TN24 4.3" WQVGA TFT LCD panel
+       - innolux,at043tn24
++        # Innolux AT056tN53V1 5.6" VGA (640x480) TFT LCD panel
++      - innolux,at056tn53v1
+         # Innolux AT070TN92 7.0" WQVGA TFT LCD panel
+       - innolux,at070tn92
+         # Innolux G070Y2-L01 7" WVGA (800x480) TFT LCD panel
+--- a/Documentation/userspace-api/media/v4l/subdev-formats.rst
++++ b/Documentation/userspace-api/media/v4l/subdev-formats.rst
+@@ -912,6 +912,43 @@ The following tables list existing packe
+       - g\ :sub:`5`
+       - g\ :sub:`4`
+       - g\ :sub:`3`
++    * .. _MEDIA-BUS-FMT-BGR666-1X18:
++
++      - MEDIA_BUS_FMT_RGB666_1X18
++      - 0x101f
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      - b\ :sub:`5`
++      - b\ :sub:`4`
++      - b\ :sub:`3`
++      - b\ :sub:`2`
++      - b\ :sub:`1`
++      - b\ :sub:`0`
++      - g\ :sub:`5`
++      - g\ :sub:`4`
++      - g\ :sub:`3`
++      - g\ :sub:`2`
++      - g\ :sub:`1`
++      - g\ :sub:`0`
++      - r\ :sub:`5`
++      - r\ :sub:`4`
++      - r\ :sub:`3`
++      - r\ :sub:`2`
++      - r\ :sub:`1`
++      - r\ :sub:`0`
+     * .. _MEDIA-BUS-FMT-RGB666-1X18:
+ 
+       - MEDIA_BUS_FMT_RGB666_1X18
+@@ -986,6 +1023,43 @@ The following tables list existing packe
+       - g\ :sub:`2`
+       - g\ :sub:`1`
+       - g\ :sub:`0`
++    * .. _MEDIA-BUS-FMT-BGR666-1X24_CPADHI:
++
++      - MEDIA_BUS_FMT_BGR666_1X24_CPADHI
++      - 0x101e
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      - 0
++      - 0
++      - b\ :sub:`5`
++      - b\ :sub:`4`
++      - b\ :sub:`3`
++      - b\ :sub:`2`
++      - b\ :sub:`1`
++      - b\ :sub:`0`
++      - 0
++      - 0
++      - g\ :sub:`5`
++      - g\ :sub:`4`
++      - g\ :sub:`3`
++      - g\ :sub:`2`
++      - g\ :sub:`1`
++      - g\ :sub:`0`
++      - 0
++      - 0
++      - r\ :sub:`5`
++      - r\ :sub:`4`
++      - r\ :sub:`3`
++      - r\ :sub:`2`
++      - r\ :sub:`1`
++      - r\ :sub:`0`
+     * .. _MEDIA-BUS-FMT-RGB666-1X24_CPADHI:
+ 
+       - MEDIA_BUS_FMT_RGB666_1X24_CPADHI
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -2472,6 +2472,38 @@ static const struct panel_desc innolux_a
+ 	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
+ };
+ 
++static const struct display_timing innolux_at056tn53v1_timing = {
++	.pixelclock = { 39700000, 39700000, 39700000},
++	.hactive = { 640, 640, 640 },
++	.hfront_porch = { 16, 16, 16 },
++	.hback_porch = { 134, 134, 134 },
++	.hsync_len = { 10, 10, 10},
++	.vactive = { 480, 480, 480 },
++	.vfront_porch = { 32, 32, 32},
++	.vback_porch = { 11, 11, 11 },
++	.vsync_len = { 2, 2, 2 },
++	.flags = DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_PHSYNC,
++};
++
++static const struct panel_desc innolux_at056tn53v1 = {
++	.timings = &innolux_at056tn53v1_timing,
++	.num_timings = 1,
++	.bpc = 6,
++	.size = {
++		.width = 112,
++		.height = 84,
++	},
++	.delay = {
++		.prepare = 50,
++		.enable = 200,
++		.disable = 110,
++		.unprepare = 200,
++	},
++	.bus_format = MEDIA_BUS_FMT_BGR666_1X24_CPADHI,
++	.bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,
++	.connector_type = DRM_MODE_CONNECTOR_DPI,
++};
++
+ static const struct drm_display_mode innolux_at070tn92_mode = {
+ 	.clock = 33333,
+ 	.hdisplay = 800,
+@@ -4659,6 +4691,9 @@ static const struct of_device_id platfor
+ 		.compatible = "innolux,at043tn24",
+ 		.data = &innolux_at043tn24,
+ 	}, {
++		.compatible = "innolux,at056tn53v1",
++		.data = &innolux_at056tn53v1,
++	}, {
+ 		.compatible = "innolux,at070tn92",
+ 		.data = &innolux_at070tn92,
+ 	}, {
+--- a/drivers/gpu/drm/vc4/vc4_dpi.c
++++ b/drivers/gpu/drm/vc4/vc4_dpi.c
+@@ -165,10 +165,20 @@ static void vc4_dpi_encoder_enable(struc
+ 			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
+ 					       DPI_FORMAT);
+ 			break;
++		case MEDIA_BUS_FMT_BGR666_1X24_CPADHI:
++			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
++					       DPI_FORMAT);
++			dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
++			break;
+ 		case MEDIA_BUS_FMT_RGB666_1X18:
+ 			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
+ 					       DPI_FORMAT);
+ 			break;
++		case MEDIA_BUS_FMT_BGR666_1X18:
++			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
++					       DPI_FORMAT);
++			dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
++			break;
+ 		case MEDIA_BUS_FMT_RGB565_1X16:
+ 			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+ 					       DPI_FORMAT);
+--- a/include/uapi/linux/media-bus-format.h
++++ b/include/uapi/linux/media-bus-format.h
+@@ -34,7 +34,7 @@
+ 
+ #define MEDIA_BUS_FMT_FIXED			0x0001
+ 
+-/* RGB - next is	0x101e */
++/* RGB - next is	0x1020 */
+ #define MEDIA_BUS_FMT_RGB444_1X12		0x1016
+ #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE	0x1001
+ #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE	0x1002
+@@ -45,8 +45,10 @@
+ #define MEDIA_BUS_FMT_BGR565_2X8_LE		0x1006
+ #define MEDIA_BUS_FMT_RGB565_2X8_BE		0x1007
+ #define MEDIA_BUS_FMT_RGB565_2X8_LE		0x1008
++#define MEDIA_BUS_FMT_BGR666_1X18		0x101f
+ #define MEDIA_BUS_FMT_RGB666_1X18		0x1009
+ #define MEDIA_BUS_FMT_RBG888_1X24		0x100e
++#define MEDIA_BUS_FMT_BGR666_1X24_CPADHI	0x101e
+ #define MEDIA_BUS_FMT_RGB666_1X24_CPADHI	0x1015
+ #define MEDIA_BUS_FMT_RGB666_1X7X3_SPWG		0x1010
+ #define MEDIA_BUS_FMT_BGR888_1X24		0x1013
diff --git a/target/linux/bcm27xx/patches-5.15/950-0422-drm-vc4-plane-Add-support-for-DRM_FORMAT_P030.patch b/target/linux/bcm27xx/patches-5.15/950-0422-drm-vc4-plane-Add-support-for-DRM_FORMAT_P030.patch
new file mode 100644
index 0000000000..074fbe803d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0422-drm-vc4-plane-Add-support-for-DRM_FORMAT_P030.patch
@@ -0,0 +1,216 @@
+From fd317c55c0a5d9f8950b49d1efe32166a378cb26 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Dec 2021 10:17:38 +0100
+Subject: [PATCH] drm/vc4: plane: Add support for DRM_FORMAT_P030
+
+The P030 format, used with the DRM_FORMAT_MOD_BROADCOM_SAND128 modifier,
+is a format output by the video decoder on the BCM2711.
+
+Add native support to the KMS planes for that format.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Link: https://lore.kernel.org/r/20211215091739.135042-3-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 127 ++++++++++++++++++++++++--------
+ 1 file changed, 96 insertions(+), 31 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -33,6 +33,7 @@ static const struct hvs_format {
+ 	u32 hvs; /* HVS_FORMAT_* */
+ 	u32 pixel_order;
+ 	u32 pixel_order_hvs5;
++	bool hvs5_only;
+ } hvs_formats[] = {
+ 	{
+ 		.drm = DRM_FORMAT_XRGB8888,
+@@ -128,6 +129,12 @@ static const struct hvs_format {
+ 		.hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_2PLANE,
+ 		.pixel_order = HVS_PIXEL_ORDER_XYCRCB,
+ 	},
++	{
++		.drm = DRM_FORMAT_P030,
++		.hvs = HVS_PIXEL_FORMAT_YCBCR_10BIT,
++		.pixel_order = HVS_PIXEL_ORDER_XYCBCR,
++		.hvs5_only = true,
++	},
+ };
+ 
+ static const struct hvs_format *vc4_get_hvs_format(u32 drm_format)
+@@ -762,47 +769,90 @@ static int vc4_plane_mode_set(struct drm
+ 	case DRM_FORMAT_MOD_BROADCOM_SAND128:
+ 	case DRM_FORMAT_MOD_BROADCOM_SAND256: {
+ 		uint32_t param = fourcc_mod_broadcom_param(fb->modifier);
+-		u32 tile_w, tile, x_off, pix_per_tile;
+-
+-		hvs_format = HVS_PIXEL_FORMAT_H264;
+-
+-		switch (base_format_mod) {
+-		case DRM_FORMAT_MOD_BROADCOM_SAND64:
+-			tiling = SCALER_CTL0_TILING_64B;
+-			tile_w = 64;
+-			break;
+-		case DRM_FORMAT_MOD_BROADCOM_SAND128:
+-			tiling = SCALER_CTL0_TILING_128B;
+-			tile_w = 128;
+-			break;
+-		case DRM_FORMAT_MOD_BROADCOM_SAND256:
+-			tiling = SCALER_CTL0_TILING_256B_OR_T;
+-			tile_w = 256;
+-			break;
+-		default:
+-			break;
+-		}
+ 
+ 		if (param > SCALER_TILE_HEIGHT_MASK) {
+-			DRM_DEBUG_KMS("SAND height too large (%d)\n", param);
++			DRM_DEBUG_KMS("SAND height too large (%d)\n",
++				      param);
+ 			return -EINVAL;
+ 		}
+ 
+-		pix_per_tile = tile_w / fb->format->cpp[0];
+-		tile = vc4_state->src_x / pix_per_tile;
+-		x_off = vc4_state->src_x % pix_per_tile;
++		if (fb->format->format == DRM_FORMAT_P030) {
++			hvs_format = HVS_PIXEL_FORMAT_YCBCR_10BIT;
++			tiling = SCALER_CTL0_TILING_128B;
++		} else {
++			hvs_format = HVS_PIXEL_FORMAT_H264;
++
++			switch (base_format_mod) {
++			case DRM_FORMAT_MOD_BROADCOM_SAND64:
++				tiling = SCALER_CTL0_TILING_64B;
++				break;
++			case DRM_FORMAT_MOD_BROADCOM_SAND128:
++				tiling = SCALER_CTL0_TILING_128B;
++				break;
++			case DRM_FORMAT_MOD_BROADCOM_SAND256:
++				tiling = SCALER_CTL0_TILING_256B_OR_T;
++				break;
++			default:
++				return -EINVAL;
++			}
++		}
+ 
+ 		/* Adjust the base pointer to the first pixel to be scanned
+ 		 * out.
++		 *
++		 * For P030, y_ptr [31:4] is the 128bit word for the start pixel
++		 * y_ptr [3:0] is the pixel (0-11) contained within that 128bit
++		 * word that should be taken as the first pixel.
++		 * Ditto uv_ptr [31:4] vs [3:0], however [3:0] contains the
++		 * element within the 128bit word, eg for pixel 3 the value
++		 * should be 6.
+ 		 */
+ 		for (i = 0; i < num_planes; i++) {
++			u32 tile_w, tile, x_off, pix_per_tile;
++
++			if (fb->format->format == DRM_FORMAT_P030) {
++				/*
++				 * Spec says: bits [31:4] of the given address
++				 * should point to the 128-bit word containing
++				 * the desired starting pixel, and bits[3:0]
++				 * should be between 0 and 11, indicating which
++				 * of the 12-pixels in that 128-bit word is the
++				 * first pixel to be used
++				 */
++				u32 remaining_pixels = vc4_state->src_x % 96;
++				u32 aligned = remaining_pixels / 12;
++				u32 last_bits = remaining_pixels % 12;
++
++				x_off = aligned * 16 + last_bits;
++				tile_w = 128;
++				pix_per_tile = 96;
++			} else {
++				switch (base_format_mod) {
++				case DRM_FORMAT_MOD_BROADCOM_SAND64:
++					tile_w = 64;
++					break;
++				case DRM_FORMAT_MOD_BROADCOM_SAND128:
++					tile_w = 128;
++					break;
++				case DRM_FORMAT_MOD_BROADCOM_SAND256:
++					tile_w = 256;
++					break;
++				default:
++					return -EINVAL;
++				}
++				pix_per_tile = tile_w / fb->format->cpp[0];
++				x_off = (vc4_state->src_x % pix_per_tile) /
++					(i ? h_subsample : 1) *
++					fb->format->cpp[i];
++			}
++
++			tile = vc4_state->src_x / pix_per_tile;
++
+ 			vc4_state->offsets[i] += param * tile_w * tile;
+ 			vc4_state->offsets[i] += src_y /
+ 						 (i ? v_subsample : 1) *
+ 						 tile_w;
+-			vc4_state->offsets[i] += x_off /
+-						 (i ? h_subsample : 1) *
+-						 fb->format->cpp[i];
++			vc4_state->offsets[i] += x_off & ~(i ? 1 : 0);
+ 		}
+ 
+ 		pitch0 = VC4_SET_FIELD(param, SCALER_TILE_HEIGHT);
+@@ -955,7 +1005,8 @@ static int vc4_plane_mode_set(struct drm
+ 
+ 	/* Pitch word 1/2 */
+ 	for (i = 1; i < num_planes; i++) {
+-		if (hvs_format != HVS_PIXEL_FORMAT_H264) {
++		if (hvs_format != HVS_PIXEL_FORMAT_H264 &&
++		    hvs_format != HVS_PIXEL_FORMAT_YCBCR_10BIT) {
+ 			vc4_dlist_write(vc4_state,
+ 					VC4_SET_FIELD(fb->pitches[i],
+ 						      SCALER_SRC_PITCH));
+@@ -1315,6 +1366,13 @@ static bool vc4_format_mod_supported(str
+ 		default:
+ 			return false;
+ 		}
++	case DRM_FORMAT_P030:
++		switch (fourcc_mod_broadcom_mod(modifier)) {
++		case DRM_FORMAT_MOD_BROADCOM_SAND128:
++			return true;
++		default:
++			return false;
++		}
+ 	case DRM_FORMAT_RGBX1010102:
+ 	case DRM_FORMAT_BGRX1010102:
+ 	case DRM_FORMAT_RGBA1010102:
+@@ -1347,8 +1405,11 @@ struct drm_plane *vc4_plane_init(struct
+ 	struct drm_plane *plane = NULL;
+ 	struct vc4_plane *vc4_plane;
+ 	u32 formats[ARRAY_SIZE(hvs_formats)];
++	int num_formats = 0;
+ 	int ret = 0;
+ 	unsigned i;
++	bool hvs5 = of_device_is_compatible(dev->dev->of_node,
++					    "brcm,bcm2711-vc5");
+ 	static const uint64_t modifiers[] = {
+ 		DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED,
+ 		DRM_FORMAT_MOD_BROADCOM_SAND128,
+@@ -1363,13 +1424,17 @@ struct drm_plane *vc4_plane_init(struct
+ 	if (!vc4_plane)
+ 		return ERR_PTR(-ENOMEM);
+ 
+-	for (i = 0; i < ARRAY_SIZE(hvs_formats); i++)
+-		formats[i] = hvs_formats[i].drm;
++	for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) {
++		if (!hvs_formats[i].hvs5_only || hvs5) {
++			formats[num_formats] = hvs_formats[i].drm;
++			num_formats++;
++		}
++	}
+ 
+ 	plane = &vc4_plane->base;
+ 	ret = drm_universal_plane_init(dev, plane, 0,
+ 				       &vc4_plane_funcs,
+-				       formats, ARRAY_SIZE(formats),
++				       formats, num_formats,
+ 				       modifiers, type, NULL);
+ 	if (ret)
+ 		return ERR_PTR(ret);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0423-drm-vc4-plane-Add-support-for-YUV-color-encodings-an.patch b/target/linux/bcm27xx/patches-5.15/950-0423-drm-vc4-plane-Add-support-for-YUV-color-encodings-an.patch
new file mode 100644
index 0000000000..8e5e918047
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0423-drm-vc4-plane-Add-support-for-YUV-color-encodings-an.patch
@@ -0,0 +1,158 @@
+From 81fe25670ae332380379026469c272e5d466c4cb Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Dec 2021 10:17:39 +0100
+Subject: [PATCH] drm/vc4: plane: Add support for YUV color encodings
+ and ranges
+
+The BT601/BT709 color encoding and limited vs full
+range properties were not being exposed, defaulting
+always to BT601 limited range.
+
+Expose the parameters and set the registers appropriately.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Link: https://lore.kernel.org/r/20211215091739.135042-4-maxime@cerno.tech
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 71 +++++++++++++++++++++++++++++++--
+ drivers/gpu/drm/vc4/vc4_regs.h  | 19 ++++++---
+ 2 files changed, 82 insertions(+), 8 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -623,6 +623,51 @@ static int vc4_plane_allocate_lbm(struct
+ 	return 0;
+ }
+ 
++/*
++ * The colorspace conversion matrices are held in 3 entries in the dlist.
++ * Create an array of them, with entries for each full and limited mode, and
++ * each supported colorspace.
++ */
++static const u32 colorspace_coeffs[2][DRM_COLOR_ENCODING_MAX][3] = {
++	{
++		/* Limited range */
++		{
++			/* BT601 */
++			SCALER_CSC0_ITR_R_601_5,
++			SCALER_CSC1_ITR_R_601_5,
++			SCALER_CSC2_ITR_R_601_5,
++		}, {
++			/* BT709 */
++			SCALER_CSC0_ITR_R_709_3,
++			SCALER_CSC1_ITR_R_709_3,
++			SCALER_CSC2_ITR_R_709_3,
++		}, {
++			/* BT2020 */
++			SCALER_CSC0_ITR_R_2020,
++			SCALER_CSC1_ITR_R_2020,
++			SCALER_CSC2_ITR_R_2020,
++		}
++	}, {
++		/* Full range */
++		{
++			/* JFIF */
++			SCALER_CSC0_JPEG_JFIF,
++			SCALER_CSC1_JPEG_JFIF,
++			SCALER_CSC2_JPEG_JFIF,
++		}, {
++			/* BT709 */
++			SCALER_CSC0_ITR_R_709_3_FR,
++			SCALER_CSC1_ITR_R_709_3_FR,
++			SCALER_CSC2_ITR_R_709_3_FR,
++		}, {
++			/* BT2020 */
++			SCALER_CSC0_ITR_R_2020_FR,
++			SCALER_CSC1_ITR_R_2020_FR,
++			SCALER_CSC2_ITR_R_2020_FR,
++		}
++	}
++};
++
+ /* Writes out a full display list for an active plane to the plane's
+  * private dlist state.
+  */
+@@ -1017,9 +1062,20 @@ static int vc4_plane_mode_set(struct drm
+ 
+ 	/* Colorspace conversion words */
+ 	if (vc4_state->is_yuv) {
+-		vc4_dlist_write(vc4_state, SCALER_CSC0_ITR_R_601_5);
+-		vc4_dlist_write(vc4_state, SCALER_CSC1_ITR_R_601_5);
+-		vc4_dlist_write(vc4_state, SCALER_CSC2_ITR_R_601_5);
++		enum drm_color_encoding color_encoding = state->color_encoding;
++		enum drm_color_range color_range = state->color_range;
++		const u32 *ccm;
++
++		if (color_encoding >= DRM_COLOR_ENCODING_MAX)
++			color_encoding = DRM_COLOR_YCBCR_BT601;
++		if (color_range >= DRM_COLOR_RANGE_MAX)
++			color_range = DRM_COLOR_YCBCR_LIMITED_RANGE;
++
++		ccm = colorspace_coeffs[color_range][color_encoding];
++
++		vc4_dlist_write(vc4_state, ccm[0]);
++		vc4_dlist_write(vc4_state, ccm[1]);
++		vc4_dlist_write(vc4_state, ccm[2]);
+ 	}
+ 
+ 	vc4_state->lbm_offset = 0;
+@@ -1448,6 +1504,15 @@ struct drm_plane *vc4_plane_init(struct
+ 					   DRM_MODE_REFLECT_X |
+ 					   DRM_MODE_REFLECT_Y);
+ 
++	drm_plane_create_color_properties(plane,
++					  BIT(DRM_COLOR_YCBCR_BT601) |
++					  BIT(DRM_COLOR_YCBCR_BT709) |
++					  BIT(DRM_COLOR_YCBCR_BT2020),
++					  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
++					  BIT(DRM_COLOR_YCBCR_FULL_RANGE),
++					  DRM_COLOR_YCBCR_BT709,
++					  DRM_COLOR_YCBCR_LIMITED_RANGE);
++
+ 	return plane;
+ }
+ 
+--- a/drivers/gpu/drm/vc4/vc4_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_regs.h
+@@ -975,7 +975,10 @@ enum hvs_pixel_format {
+ #define SCALER_CSC0_COEF_CR_OFS_SHIFT		0
+ #define SCALER_CSC0_ITR_R_601_5			0x00f00000
+ #define SCALER_CSC0_ITR_R_709_3			0x00f00000
++#define SCALER_CSC0_ITR_R_2020			0x00f00000
+ #define SCALER_CSC0_JPEG_JFIF			0x00000000
++#define SCALER_CSC0_ITR_R_709_3_FR		0x00000000
++#define SCALER_CSC0_ITR_R_2020_FR		0x00000000
+ 
+ /* S2.8 contribution of Cb to Green */
+ #define SCALER_CSC1_COEF_CB_GRN_MASK		VC4_MASK(31, 22)
+@@ -990,8 +993,11 @@ enum hvs_pixel_format {
+ #define SCALER_CSC1_COEF_CR_BLU_MASK		VC4_MASK(1, 0)
+ #define SCALER_CSC1_COEF_CR_BLU_SHIFT		0
+ #define SCALER_CSC1_ITR_R_601_5			0xe73304a8
+-#define SCALER_CSC1_ITR_R_709_3			0xf2b784a8
+-#define SCALER_CSC1_JPEG_JFIF			0xea34a400
++#define SCALER_CSC1_ITR_R_709_3			0xf27784a8
++#define SCALER_CSC1_ITR_R_2020			0xf43594a8
++#define SCALER_CSC1_JPEG_JFIF			0xea349400
++#define SCALER_CSC1_ITR_R_709_3_FR		0xf4388400
++#define SCALER_CSC1_ITR_R_2020_FR		0xf5b6d400
+ 
+ /* S2.8 contribution of Cb to Red */
+ #define SCALER_CSC2_COEF_CB_RED_MASK		VC4_MASK(29, 20)
+@@ -1002,9 +1008,12 @@ enum hvs_pixel_format {
+ /* S2.8 contribution of Cb to Blue */
+ #define SCALER_CSC2_COEF_CB_BLU_MASK		VC4_MASK(19, 10)
+ #define SCALER_CSC2_COEF_CB_BLU_SHIFT		10
+-#define SCALER_CSC2_ITR_R_601_5			0x00066204
+-#define SCALER_CSC2_ITR_R_709_3			0x00072a1c
+-#define SCALER_CSC2_JPEG_JFIF			0x000599c5
++#define SCALER_CSC2_ITR_R_601_5			0x00066604
++#define SCALER_CSC2_ITR_R_709_3			0x00072e1d
++#define SCALER_CSC2_ITR_R_2020			0x0006b624
++#define SCALER_CSC2_JPEG_JFIF			0x00059dc6
++#define SCALER_CSC2_ITR_R_709_3_FR		0x00064ddb
++#define SCALER_CSC2_ITR_R_2020_FR		0x0005e5e2
+ 
+ #define SCALER_TPZ0_VERT_RECALC			BIT(31)
+ #define SCALER_TPZ0_SCALE_MASK			VC4_MASK(28, 8)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0424-drm-vc4-Add-FKMS-as-an-acceptable-node-for-dma-range.patch b/target/linux/bcm27xx/patches-5.15/950-0424-drm-vc4-Add-FKMS-as-an-acceptable-node-for-dma-range.patch
new file mode 100644
index 0000000000..4b21e38fbb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0424-drm-vc4-Add-FKMS-as-an-acceptable-node-for-dma-range.patch
@@ -0,0 +1,27 @@
+From 96a858966375106d5ddaa1090b5a35cebfa5b6e8 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 19 May 2020 16:20:30 +0100
+Subject: [PATCH] drm/vc4: Add FKMS as an acceptable node for dma
+ ranges.
+
+Under FKMS, the firmware (via FKMS) also requires the VideoCore cache
+aliases for image planes, as defined by the dma-ranges under /soc.
+
+Add rpi-firmware-kms to the list of acceptable nodes to look for
+to copy dma config from.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -218,6 +218,7 @@ static void vc4_match_add_drivers(struct
+ 
+ const struct of_device_id vc4_dma_range_matches[] = {
+ 	{ .compatible = "brcm,bcm2835-hvs" },
++	{ .compatible = "raspberrypi,rpi-firmware-kms" },
+ 	{ .compatible = "brcm,bcm2835-v3d" },
+ 	{ .compatible = "brcm,cygnus-v3d" },
+ 	{ .compatible = "brcm,vc4-v3d" },
diff --git a/target/linux/bcm27xx/patches-5.15/950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch b/target/linux/bcm27xx/patches-5.15/950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch
new file mode 100644
index 0000000000..eb3528cf66
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch
@@ -0,0 +1,33 @@
+From 96ddf993aa82e33e910110929816b6c83720dc99 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 31 Jul 2019 17:36:34 +0100
+Subject: [PATCH] drm/vc4: A present but empty dmas disables audio
+
+Overlays are unable to remove properties in the base DTB, but they
+can overwrite them. Allow a present but empty 'dmas' property
+to also disable the HDMI audio interface.
+
+See: https://github.com/raspberrypi/linux/issues/2489
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1692,10 +1692,12 @@ static int vc4_hdmi_audio_init(struct vc
+ 	const __be32 *addr;
+ 	int index;
+ 	int ret;
++	int len;
+ 
+-	if (!of_find_property(dev->of_node, "dmas", NULL)) {
++	if (!of_find_property(dev->of_node, "dmas", &len) ||
++	    len == 0) {
+ 		dev_warn(dev,
+-			 "'dmas' DT property is missing, no HDMI audio\n");
++			 "'dmas' DT property is missing or empty, no HDMI audio\n");
+ 		return 0;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0426-drm-vc4-Add-debugfs-node-that-dumps-the-current-disp.patch b/target/linux/bcm27xx/patches-5.15/950-0426-drm-vc4-Add-debugfs-node-that-dumps-the-current-disp.patch
new file mode 100644
index 0000000000..c21fcc8ace
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0426-drm-vc4-Add-debugfs-node-that-dumps-the-current-disp.patch
@@ -0,0 +1,70 @@
+From d2391d8e17532da2e4edf69672504cad2ab4bca1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 6 Oct 2020 18:44:42 +0100
+Subject: [PATCH] drm/vc4: Add debugfs node that dumps the current
+ display lists
+
+This allows easy analysis of display lists when debugging.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 41 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 41 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -95,6 +95,45 @@ static int vc4_hvs_debugfs_underrun(stru
+ 	return 0;
+ }
+ 
++static int vc4_hvs_debugfs_dlist(struct seq_file *m, void *data)
++{
++	struct drm_info_node *node = m->private;
++	struct drm_device *dev = node->minor->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct drm_printer p = drm_seq_file_printer(m);
++	unsigned int next_entry_start = 0;
++	unsigned int i, j;
++	u32 dlist_word, dispstat;
++
++	for (i = 0; i < SCALER_CHANNELS_COUNT; i++) {
++		dispstat = VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(i)),
++					 SCALER_DISPSTATX_MODE);
++		if (dispstat == SCALER_DISPSTATX_MODE_DISABLED ||
++		    dispstat == SCALER_DISPSTATX_MODE_EOF) {
++			drm_printf(&p, "HVS chan %u disabled\n", i);
++			continue;
++		}
++
++		drm_printf(&p, "HVS chan %u:\n", i);
++
++		for (j = HVS_READ(SCALER_DISPLISTX(i)); j < 256; j++) {
++			dlist_word = readl((u32 __iomem *)vc4->hvs->dlist + j);
++			drm_printf(&p, "dlist: %02d: 0x%08x\n", j,
++				   dlist_word);
++			if (!next_entry_start ||
++			    next_entry_start == j) {
++				if (dlist_word & SCALER_CTL0_END)
++					break;
++				next_entry_start = j +
++					VC4_GET_FIELD(dlist_word,
++						      SCALER_CTL0_SIZE);
++			}
++		}
++	}
++
++	return 0;
++}
++
+ /* The filter kernel is composed of dwords each containing 3 9-bit
+  * signed integers packed next to each other.
+  */
+@@ -689,6 +728,8 @@ static int vc4_hvs_bind(struct device *d
+ 	vc4_debugfs_add_regset32(drm, "hvs_regs", &hvs->regset);
+ 	vc4_debugfs_add_file(drm, "hvs_underrun", vc4_hvs_debugfs_underrun,
+ 			     NULL);
++	vc4_debugfs_add_file(drm, "hvs_dlists", vc4_hvs_debugfs_dlist,
++			     NULL);
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0427-drm-vc4-Add-all-the-HDMI-registers-into-the-debugfs-.patch b/target/linux/bcm27xx/patches-5.15/950-0427-drm-vc4-Add-all-the-HDMI-registers-into-the-debugfs-.patch
new file mode 100644
index 0000000000..feedea8f43
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0427-drm-vc4-Add-all-the-HDMI-registers-into-the-debugfs-.patch
@@ -0,0 +1,95 @@
+From b6d1141860db42137660a44a8c1713a33e6e5833 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 21 Oct 2020 18:34:56 +0100
+Subject: [PATCH] drm/vc4: Add all the HDMI registers into the debugfs
+ dumps
+
+The vc5 HDMI registers hadn't been added into the debugfs
+register sets, therefore weren't dumped on request.
+Add them in.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 39 ++++++++++++++++++++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  8 +++++++
+ 2 files changed, 47 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -112,6 +112,12 @@ static int vc4_hdmi_debugfs_regs(struct
+ 
+ 	drm_print_regset32(&p, &vc4_hdmi->hdmi_regset);
+ 	drm_print_regset32(&p, &vc4_hdmi->hd_regset);
++	drm_print_regset32(&p, &vc4_hdmi->cec_regset);
++	drm_print_regset32(&p, &vc4_hdmi->csc_regset);
++	drm_print_regset32(&p, &vc4_hdmi->dvp_regset);
++	drm_print_regset32(&p, &vc4_hdmi->phy_regset);
++	drm_print_regset32(&p, &vc4_hdmi->ram_regset);
++	drm_print_regset32(&p, &vc4_hdmi->rm_regset);
+ 
+ 	return 0;
+ }
+@@ -2361,6 +2367,7 @@ static int vc5_hdmi_init_resources(struc
+ 	struct platform_device *pdev = vc4_hdmi->pdev;
+ 	struct device *dev = &pdev->dev;
+ 	struct resource *res;
++	int ret;
+ 
+ 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hdmi");
+ 	if (!res)
+@@ -2457,6 +2464,38 @@ static int vc5_hdmi_init_resources(struc
+ 		return PTR_ERR(vc4_hdmi->reset);
+ 	}
+ 
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->hdmi_regset, VC4_HDMI);
++	if (ret)
++		return ret;
++
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->hd_regset, VC4_HD);
++	if (ret)
++		return ret;
++
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->cec_regset, VC5_CEC);
++	if (ret)
++		return ret;
++
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->csc_regset, VC5_CSC);
++	if (ret)
++		return ret;
++
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->dvp_regset, VC5_DVP);
++	if (ret)
++		return ret;
++
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->phy_regset, VC5_PHY);
++	if (ret)
++		return ret;
++
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->ram_regset, VC5_RAM);
++	if (ret)
++		return ret;
++
++	ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->rm_regset, VC5_RM);
++	if (ret)
++		return ret;
++
+ 	return 0;
+ }
+ 
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -216,6 +216,14 @@ struct vc4_hdmi {
+ 	 * the scrambler on? Protected by @mutex.
+ 	 */
+ 	bool scdc_enabled;
++
++	/* VC5 debugfs regset */
++	struct debugfs_regset32 cec_regset;
++	struct debugfs_regset32 csc_regset;
++	struct debugfs_regset32 dvp_regset;
++	struct debugfs_regset32 phy_regset;
++	struct debugfs_regset32 ram_regset;
++	struct debugfs_regset32 rm_regset;
+ };
+ 
+ static inline struct vc4_hdmi *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0428-drm-vc4-Add-the-2711-HVS-as-a-suitable-DMA-node.patch b/target/linux/bcm27xx/patches-5.15/950-0428-drm-vc4-Add-the-2711-HVS-as-a-suitable-DMA-node.patch
new file mode 100644
index 0000000000..56d39f79fc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0428-drm-vc4-Add-the-2711-HVS-as-a-suitable-DMA-node.patch
@@ -0,0 +1,24 @@
+From b7737b9299e9636e8ec2acaddf34300eb378ce50 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 26 Oct 2020 12:38:27 +0000
+Subject: [PATCH] drm/vc4: Add the 2711 HVS as a suitable DMA node
+
+With vc4-drv node not being under /soc on Pi4, we need to
+adopt the correct DMA parameters from a suitable sub-component.
+Add "brcm,bcm2711-hvs" to that list of components.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -218,6 +218,7 @@ static void vc4_match_add_drivers(struct
+ 
+ const struct of_device_id vc4_dma_range_matches[] = {
+ 	{ .compatible = "brcm,bcm2835-hvs" },
++	{ .compatible = "brcm,bcm2711-hvs" },
+ 	{ .compatible = "raspberrypi,rpi-firmware-kms" },
+ 	{ .compatible = "brcm,bcm2835-v3d" },
+ 	{ .compatible = "brcm,cygnus-v3d" },
diff --git a/target/linux/bcm27xx/patches-5.15/950-0429-vc4_hdmi-Report-that-3d-stereo-is-allowed.patch b/target/linux/bcm27xx/patches-5.15/950-0429-vc4_hdmi-Report-that-3d-stereo-is-allowed.patch
new file mode 100644
index 0000000000..6ff1ed9d3e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0429-vc4_hdmi-Report-that-3d-stereo-is-allowed.patch
@@ -0,0 +1,20 @@
+From cda5446da5bfd175c0c9c78b57e9a6e935f49f0b Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Mon, 9 Nov 2020 19:49:32 +0000
+Subject: [PATCH] vc4_hdmi: Report that 3d/stereo is allowed
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -398,6 +398,7 @@ static int vc4_hdmi_connector_init(struc
+ 
+ 	connector->interlace_allowed = 1;
+ 	connector->doublescan_allowed = 0;
++	connector->stereo_allowed = 1;
+ 
+ 	if (vc4_hdmi->variant->supports_hdr)
+ 		drm_connector_attach_hdr_output_metadata_property(connector);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0430-vc4-Clear-unused-infoframe-packet-RAM-registers.patch b/target/linux/bcm27xx/patches-5.15/950-0430-vc4-Clear-unused-infoframe-packet-RAM-registers.patch
new file mode 100644
index 0000000000..df693920dc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0430-vc4-Clear-unused-infoframe-packet-RAM-registers.patch
@@ -0,0 +1,45 @@
+From ce3b4ee2f7d315dadd56ba19587b58339e5d6185 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 10 Nov 2020 20:04:08 +0000
+Subject: [PATCH] vc4: Clear unused infoframe packet RAM registers
+
+Using a hdmi analyser the bytes in packet ram
+registers beyond the length were visible in the
+infoframes and it flagged the checksum as invalid.
+
+Zeroing unused words of packet RAM avoids this
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -436,9 +436,11 @@ static void vc4_hdmi_write_infoframe(str
+ 	const struct vc4_hdmi_register *ram_packet_start =
+ 		&vc4_hdmi->variant->registers[HDMI_RAM_PACKET_START];
+ 	u32 packet_reg = ram_packet_start->offset + VC4_HDMI_PACKET_STRIDE * packet_id;
++	u32 packet_reg_next = ram_packet_start->offset +
++		VC4_HDMI_PACKET_STRIDE * (packet_id + 1);
+ 	void __iomem *base = __vc4_hdmi_get_field_base(vc4_hdmi,
+ 						       ram_packet_start->reg);
+-	uint8_t buffer[VC4_HDMI_PACKET_STRIDE];
++	uint8_t buffer[VC4_HDMI_PACKET_STRIDE] = {};
+ 	unsigned long flags;
+ 	ssize_t len, i;
+ 	int ret;
+@@ -474,6 +476,13 @@ static void vc4_hdmi_write_infoframe(str
+ 		packet_reg += 4;
+ 	}
+ 
++	/*
++	 * clear remainder of packet ram as it's included in the
++	 * infoframe and triggers a checksum error on hdmi analyser
++	 */
++	for (; packet_reg < packet_reg_next; packet_reg += 4)
++		writel(0, base + packet_reg);
++
+ 	HDMI_WRITE(HDMI_RAM_PACKET_CONFIG,
+ 		   HDMI_READ(HDMI_RAM_PACKET_CONFIG) | BIT(packet_id));
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0431-drm-vc4-Change-the-default-DPI-format-to-being-18bpp.patch b/target/linux/bcm27xx/patches-5.15/950-0431-drm-vc4-Change-the-default-DPI-format-to-being-18bpp.patch
new file mode 100644
index 0000000000..b278eb4dd2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0431-drm-vc4-Change-the-default-DPI-format-to-being-18bpp.patch
@@ -0,0 +1,34 @@
+From bf6ce41170822705037cc070b89a85ac4e6a4645 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 12 Feb 2021 17:31:37 +0000
+Subject: [PATCH] drm/vc4: Change the default DPI format to being
+ 18bpp, not 24.
+
+DPI hasn't really been used up until now, so the default has
+been meaningless.
+In theory we should be able to pass the desired format for the
+adjacent bridge chip through, but framework seems to be missing
+for that.
+
+As the main device to use DPI is the VGA666 or Adafruit Kippah,
+both of which use RGB666, change the default to being RGB666 instead
+of RGB888.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dpi.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dpi.c
++++ b/drivers/gpu/drm/vc4/vc4_dpi.c
+@@ -188,8 +188,8 @@ static void vc4_dpi_encoder_enable(struc
+ 			break;
+ 		}
+ 	} else {
+-		/* Default to 24bit if no connector found. */
+-		dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, DPI_FORMAT);
++		/* Default to 18bit if no connector found. */
++		dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1, DPI_FORMAT);
+ 	}
+ 
+ 	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch b/target/linux/bcm27xx/patches-5.15/950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch
new file mode 100644
index 0000000000..477ad923e7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch
@@ -0,0 +1,32 @@
+From bf7f969a35078e4a26ca2beb562593bcbf636afa Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Sun, 24 Jan 2021 15:44:10 +0000
+Subject: [PATCH] vc4/drm: Avoid full hdmi audio fifo writes
+
+We are getting occasional VC4_HD_MAI_CTL_ERRORF in
+HDMI_MAI_CTL which seem to correspond with audio dropouts.
+
+Reduce the threshold where we deassert DREQ to avoid the fifo overfilling
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1612,10 +1612,10 @@ static int vc4_hdmi_audio_prepare(struct
+ 
+ 	/* Set the MAI threshold */
+ 	HDMI_WRITE(HDMI_MAI_THR,
+-		   VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_PANICHIGH) |
+-		   VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_PANICLOW) |
+-		   VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_DREQHIGH) |
+-		   VC4_SET_FIELD(0x10, VC4_HD_MAI_THR_DREQLOW));
++		   VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_PANICHIGH) |
++		   VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_PANICLOW) |
++		   VC4_SET_FIELD(0x06, VC4_HD_MAI_THR_DREQHIGH) |
++		   VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_DREQLOW));
+ 
+ 	HDMI_WRITE(HDMI_MAI_CONFIG,
+ 		   VC4_HDMI_MAI_CONFIG_BIT_REVERSE |
diff --git a/target/linux/bcm27xx/patches-5.15/950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch b/target/linux/bcm27xx/patches-5.15/950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch
new file mode 100644
index 0000000000..0e9f37f8a9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch
@@ -0,0 +1,62 @@
+From 4b3401ec801e12a8ce5b20fa0410c60dfc792660 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Mon, 15 Mar 2021 13:28:06 +0000
+Subject: [PATCH] vc4/drm: vc4_plane: Remove subpixel positioning check
+
+There is little harm in ignoring fractional coordinates
+(they just get truncated).
+
+Without this:
+modetest -M vc4 -F tiles,gradient -s 32:1920x1080-60 -P89@74:1920x1080*.1.1@XR24
+
+is rejected. We have the same issue in Kodi when trying to
+use zoom options on video.
+
+Note: even if all coordinates are fully integer. e.g.
+src:[0,0,1920,1080] dest:[-10,-10,1940,1100]
+
+it will still get rejected as drm_atomic_helper_check_plane_state
+uses drm_rect_clip_scaled which transforms this to fractional src coords
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 21 ++++++++-------------
+ 1 file changed, 8 insertions(+), 13 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -339,7 +339,6 @@ static int vc4_plane_setup_clipping_and_
+ 	struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
+ 	struct drm_framebuffer *fb = state->fb;
+ 	struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
+-	u32 subpixel_src_mask = (1 << 16) - 1;
+ 	int num_planes = fb->format->num_planes;
+ 	struct drm_crtc_state *crtc_state;
+ 	u32 h_subsample = fb->format->hsub;
+@@ -361,18 +360,14 @@ static int vc4_plane_setup_clipping_and_
+ 	for (i = 0; i < num_planes; i++)
+ 		vc4_state->offsets[i] = bo->paddr + fb->offsets[i];
+ 
+-	/* We don't support subpixel source positioning for scaling. */
+-	if ((state->src.x1 & subpixel_src_mask) ||
+-	    (state->src.x2 & subpixel_src_mask) ||
+-	    (state->src.y1 & subpixel_src_mask) ||
+-	    (state->src.y2 & subpixel_src_mask)) {
+-		return -EINVAL;
+-	}
+-
+-	vc4_state->src_x = state->src.x1 >> 16;
+-	vc4_state->src_y = state->src.y1 >> 16;
+-	vc4_state->src_w[0] = (state->src.x2 - state->src.x1) >> 16;
+-	vc4_state->src_h[0] = (state->src.y2 - state->src.y1) >> 16;
++	/* We don't support subpixel source positioning for scaling,
++	 * but fractional coordinates can be generated by clipping
++	 * so just round for now
++	 */
++	vc4_state->src_x = DIV_ROUND_CLOSEST(state->src.x1, 1<<16);
++	vc4_state->src_y = DIV_ROUND_CLOSEST(state->src.y1, 1<<16);
++	vc4_state->src_w[0] = DIV_ROUND_CLOSEST(state->src.x2, 1<<16) - vc4_state->src_x;
++	vc4_state->src_h[0] = DIV_ROUND_CLOSEST(state->src.y2, 1<<16) - vc4_state->src_y;
+ 
+ 	vc4_state->crtc_x = state->dst.x1;
+ 	vc4_state->crtc_y = state->dst.y1;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch b/target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch
new file mode 100644
index 0000000000..fb11058c5f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0434-drm-vc4-hdmi-Convert-to-the-new-clock-request-API.patch
@@ -0,0 +1,42 @@
+From e2f73520b94f49c6ef3ae27e6dc899ec855567ab Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 13 Apr 2021 14:10:03 +0100
+Subject: [PATCH] drm/vc4: hdmi: Convert to the new clock request API
+
+The new clock request API allows us to increase the rate of the
+core clock as required during mode set while decreasing it when
+we're done, resulting in a better power-efficiency.
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -345,6 +345,7 @@ static void vc4_atomic_commit_tail(struc
+ 	struct drm_crtc *crtc;
+ 	struct vc4_hvs_state *old_hvs_state;
+ 	unsigned int channel;
++	struct clk_request *core_req;
+ 	int i;
+ 
+ 	old_hvs_state = vc4_hvs_get_old_global_state(state);
+@@ -389,7 +390,7 @@ static void vc4_atomic_commit_tail(struc
+ 						500000000,
+ 						new_hvs_state->core_clock_rate);
+ 
+-		clk_set_min_rate(hvs->core_clk, core_rate);
++		core_req = clk_request_start(hvs->core_clk, core_rate);
+ 	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+@@ -417,7 +418,7 @@ static void vc4_atomic_commit_tail(struc
+ 		drm_dbg(dev, "Running the core clock at %lu Hz\n",
+ 			new_hvs_state->core_clock_rate);
+ 
+-		clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
++		clk_request_done(core_req);
+ 	}
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch b/target/linux/bcm27xx/patches-5.15/950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch
new file mode 100644
index 0000000000..d67015a9eb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch
@@ -0,0 +1,27 @@
+From 9c30e99003913737a6c897b9aa72d87cb82c58cb Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 11 Feb 2021 18:37:04 +0000
+Subject: [PATCH] drm/vc4: Correct pixel order for DSI0
+
+For slightly unknown reasons, dsi0 takes a different pixel format
+to dsi1, and that has to be set in the pixel valve.
+
+Amend the setup accordingly.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -317,7 +317,8 @@ static void vc4_crtc_config_pv(struct dr
+ 	u32 pixel_rep = (mode->flags & DRM_MODE_FLAG_DBLCLK) ? 2 : 1;
+ 	bool is_dsi = (vc4_encoder->type == VC4_ENCODER_TYPE_DSI0 ||
+ 		       vc4_encoder->type == VC4_ENCODER_TYPE_DSI1);
+-	u32 format = is_dsi ? PV_CONTROL_FORMAT_DSIV_24 : PV_CONTROL_FORMAT_24;
++	bool is_dsi1 = vc4_encoder->type == VC4_ENCODER_TYPE_DSI1;
++	u32 format = is_dsi1 ? PV_CONTROL_FORMAT_DSIV_24 : PV_CONTROL_FORMAT_24;
+ 	u8 ppc = pv_data->pixels_per_clock;
+ 	bool debug_dump_regs = false;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch b/target/linux/bcm27xx/patches-5.15/950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch
new file mode 100644
index 0000000000..19de905f4c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch
@@ -0,0 +1,29 @@
+From 9c1e7822d347b766bf3392c8b37fe5004e1bbaaf Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 8 Feb 2021 11:22:01 +0000
+Subject: [PATCH] drm/vc4: Register dsi0 as the correct vc4 encoder
+ type
+
+vc4_dsi was registering both dsi0 and dsi1 as VC4_ENCODER_TYPE_DSI1
+which seemed to work OK for a single DSI display, but fails
+if there are two DSI displays connected.
+
+Update to register the correct type.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -1510,7 +1510,8 @@ static int vc4_dsi_bind(struct device *d
+ 		return -ENOMEM;
+ 
+ 	INIT_LIST_HEAD(&dsi->bridge_chain);
+-	vc4_dsi_encoder->base.type = VC4_ENCODER_TYPE_DSI1;
++	vc4_dsi_encoder->base.type = dsi->variant->port ?
++			VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0;
+ 	vc4_dsi_encoder->dsi = dsi;
+ 	dsi->encoder = &vc4_dsi_encoder->base.base;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch b/target/linux/bcm27xx/patches-5.15/950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch
new file mode 100644
index 0000000000..c3086bc1ce
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch
@@ -0,0 +1,188 @@
+From 8f32ff08609bb5e7fd4fb38fe7518891e0e22f45 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 10 Feb 2021 18:46:22 +0000
+Subject: [PATCH] drm/vc4: Fix dsi0 interrupt support.
+
+DSI0 seemingly had very little or no testing as a load of
+the register mappings were incorrect/missing, so host
+transfers always timed out due to enabling/checking incorrect
+bits in the interrupt enable and status registers.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 111 ++++++++++++++++++++++++++--------
+ 1 file changed, 85 insertions(+), 26 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -181,8 +181,50 @@
+ 
+ #define DSI0_TXPKT_PIX_FIFO		0x20 /* AKA PIX_FIFO */
+ 
+-#define DSI0_INT_STAT		0x24
+-#define DSI0_INT_EN		0x28
++#define DSI0_INT_STAT			0x24
++#define DSI0_INT_EN			0x28
++# define DSI0_INT_FIFO_ERR		BIT(25)
++# define DSI0_INT_CMDC_DONE_MASK	VC4_MASK(24, 23)
++# define DSI0_INT_CMDC_DONE_SHIFT	23
++#  define DSI0_INT_CMDC_DONE_NO_REPEAT		1
++#  define DSI0_INT_CMDC_DONE_REPEAT		3
++# define DSI0_INT_PHY_DIR_RTF		BIT(22)
++# define DSI0_INT_PHY_D1_ULPS		BIT(21)
++# define DSI0_INT_PHY_D1_STOP		BIT(20)
++# define DSI0_INT_PHY_RXLPDT		BIT(19)
++# define DSI0_INT_PHY_RXTRIG		BIT(18)
++# define DSI0_INT_PHY_D0_ULPS		BIT(17)
++# define DSI0_INT_PHY_D0_LPDT		BIT(16)
++# define DSI0_INT_PHY_D0_FTR		BIT(15)
++# define DSI0_INT_PHY_D0_STOP		BIT(14)
++/* Signaled when the clock lane enters the given state. */
++# define DSI0_INT_PHY_CLK_ULPS		BIT(13)
++# define DSI0_INT_PHY_CLK_HS		BIT(12)
++# define DSI0_INT_PHY_CLK_FTR		BIT(11)
++/* Signaled on timeouts */
++# define DSI0_INT_PR_TO			BIT(10)
++# define DSI0_INT_TA_TO			BIT(9)
++# define DSI0_INT_LPRX_TO		BIT(8)
++# define DSI0_INT_HSTX_TO		BIT(7)
++/* Contention on a line when trying to drive the line low */
++# define DSI0_INT_ERR_CONT_LP1		BIT(6)
++# define DSI0_INT_ERR_CONT_LP0		BIT(5)
++/* Control error: incorrect line state sequence on data lane 0. */
++# define DSI0_INT_ERR_CONTROL		BIT(4)
++# define DSI0_INT_ERR_SYNC_ESC		BIT(3)
++# define DSI0_INT_RX2_PKT		BIT(2)
++# define DSI0_INT_RX1_PKT		BIT(1)
++# define DSI0_INT_CMD_PKT		BIT(0)
++
++#define DSI0_INTERRUPTS_ALWAYS_ENABLED	(DSI0_INT_ERR_SYNC_ESC | \
++					 DSI0_INT_ERR_CONTROL |	 \
++					 DSI0_INT_ERR_CONT_LP0 | \
++					 DSI0_INT_ERR_CONT_LP1 | \
++					 DSI0_INT_HSTX_TO |	 \
++					 DSI0_INT_LPRX_TO |	 \
++					 DSI0_INT_TA_TO |	 \
++					 DSI0_INT_PR_TO)
++
+ # define DSI1_INT_PHY_D3_ULPS		BIT(30)
+ # define DSI1_INT_PHY_D3_STOP		BIT(29)
+ # define DSI1_INT_PHY_D2_ULPS		BIT(28)
+@@ -894,6 +936,9 @@ static void vc4_dsi_encoder_enable(struc
+ 
+ 		DSI_PORT_WRITE(PHY_AFEC0, afec0);
+ 
++		/* AFEC reset hold time */
++		mdelay(1);
++
+ 		DSI_PORT_WRITE(PHY_AFEC1,
+ 			       VC4_SET_FIELD(6,  DSI0_PHY_AFEC1_IDR_DLANE1) |
+ 			       VC4_SET_FIELD(6,  DSI0_PHY_AFEC1_IDR_DLANE0) |
+@@ -1060,12 +1105,9 @@ static void vc4_dsi_encoder_enable(struc
+ 		DSI_PORT_WRITE(CTRL, DSI_PORT_READ(CTRL) | DSI1_CTRL_EN);
+ 
+ 	/* Bring AFE out of reset. */
+-	if (dsi->variant->port == 0) {
+-	} else {
+-		DSI_PORT_WRITE(PHY_AFEC0,
+-			       DSI_PORT_READ(PHY_AFEC0) &
+-			       ~DSI1_PHY_AFEC0_RESET);
+-	}
++	DSI_PORT_WRITE(PHY_AFEC0,
++		       DSI_PORT_READ(PHY_AFEC0) &
++		       ~DSI_PORT_BIT(PHY_AFEC0_RESET));
+ 
+ 	vc4_dsi_ulps(dsi, false);
+ 
+@@ -1184,13 +1226,28 @@ static ssize_t vc4_dsi_host_transfer(str
+ 	/* Enable the appropriate interrupt for the transfer completion. */
+ 	dsi->xfer_result = 0;
+ 	reinit_completion(&dsi->xfer_completion);
+-	DSI_PORT_WRITE(INT_STAT, DSI1_INT_TXPKT1_DONE | DSI1_INT_PHY_DIR_RTF);
+-	if (msg->rx_len) {
+-		DSI_PORT_WRITE(INT_EN, (DSI1_INTERRUPTS_ALWAYS_ENABLED |
+-					DSI1_INT_PHY_DIR_RTF));
++	if (dsi->variant->port == 0) {
++		DSI_PORT_WRITE(INT_STAT,
++			       DSI0_INT_CMDC_DONE_MASK | DSI1_INT_PHY_DIR_RTF);
++		if (msg->rx_len) {
++			DSI_PORT_WRITE(INT_EN, (DSI0_INTERRUPTS_ALWAYS_ENABLED |
++						DSI0_INT_PHY_DIR_RTF));
++		} else {
++			DSI_PORT_WRITE(INT_EN,
++				       (DSI0_INTERRUPTS_ALWAYS_ENABLED |
++					VC4_SET_FIELD(DSI0_INT_CMDC_DONE_NO_REPEAT,
++						      DSI0_INT_CMDC_DONE)));
++		}
+ 	} else {
+-		DSI_PORT_WRITE(INT_EN, (DSI1_INTERRUPTS_ALWAYS_ENABLED |
+-					DSI1_INT_TXPKT1_DONE));
++		DSI_PORT_WRITE(INT_STAT,
++			       DSI1_INT_TXPKT1_DONE | DSI1_INT_PHY_DIR_RTF);
++		if (msg->rx_len) {
++			DSI_PORT_WRITE(INT_EN, (DSI1_INTERRUPTS_ALWAYS_ENABLED |
++						DSI1_INT_PHY_DIR_RTF));
++		} else {
++			DSI_PORT_WRITE(INT_EN, (DSI1_INTERRUPTS_ALWAYS_ENABLED |
++						DSI1_INT_TXPKT1_DONE));
++		}
+ 	}
+ 
+ 	/* Send the packet. */
+@@ -1207,7 +1264,7 @@ static ssize_t vc4_dsi_host_transfer(str
+ 		ret = dsi->xfer_result;
+ 	}
+ 
+-	DSI_PORT_WRITE(INT_EN, DSI1_INTERRUPTS_ALWAYS_ENABLED);
++	DSI_PORT_WRITE(INT_EN, DSI_PORT_BIT(INTERRUPTS_ALWAYS_ENABLED));
+ 
+ 	if (ret)
+ 		goto reset_fifo_and_return;
+@@ -1253,7 +1310,7 @@ reset_fifo_and_return:
+ 		       DSI_PORT_BIT(CTRL_RESET_FIFOS));
+ 
+ 	DSI_PORT_WRITE(TXPKT1C, 0);
+-	DSI_PORT_WRITE(INT_EN, DSI1_INTERRUPTS_ALWAYS_ENABLED);
++	DSI_PORT_WRITE(INT_EN, DSI_PORT_BIT(INTERRUPTS_ALWAYS_ENABLED));
+ 	return ret;
+ }
+ 
+@@ -1390,26 +1447,28 @@ static irqreturn_t vc4_dsi_irq_handler(i
+ 	DSI_PORT_WRITE(INT_STAT, stat);
+ 
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_ERR_SYNC_ESC, "LPDT sync");
++			 DSI_PORT_BIT(INT_ERR_SYNC_ESC), "LPDT sync");
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_ERR_CONTROL, "data lane 0 sequence");
++			 DSI_PORT_BIT(INT_ERR_CONTROL), "data lane 0 sequence");
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_ERR_CONT_LP0, "LP0 contention");
++			 DSI_PORT_BIT(INT_ERR_CONT_LP0), "LP0 contention");
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_ERR_CONT_LP1, "LP1 contention");
++			 DSI_PORT_BIT(INT_ERR_CONT_LP1), "LP1 contention");
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_HSTX_TO, "HSTX timeout");
++			 DSI_PORT_BIT(INT_HSTX_TO), "HSTX timeout");
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_LPRX_TO, "LPRX timeout");
++			 DSI_PORT_BIT(INT_LPRX_TO), "LPRX timeout");
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_TA_TO, "turnaround timeout");
++			 DSI_PORT_BIT(INT_TA_TO), "turnaround timeout");
+ 	dsi_handle_error(dsi, &ret, stat,
+-			 DSI1_INT_PR_TO, "peripheral reset timeout");
++			 DSI_PORT_BIT(INT_PR_TO), "peripheral reset timeout");
+ 
+-	if (stat & (DSI1_INT_TXPKT1_DONE | DSI1_INT_PHY_DIR_RTF)) {
++	if (stat & ((dsi->variant->port ? DSI1_INT_TXPKT1_DONE :
++					  DSI0_INT_CMDC_DONE_MASK) |
++		    DSI_PORT_BIT(INT_PHY_DIR_RTF))) {
+ 		complete(&dsi->xfer_completion);
+ 		ret = IRQ_HANDLED;
+-	} else if (stat & DSI1_INT_HSTX_TO) {
++	} else if (stat & DSI_PORT_BIT(INT_HSTX_TO)) {
+ 		complete(&dsi->xfer_completion);
+ 		dsi->xfer_result = -ETIMEDOUT;
+ 		ret = IRQ_HANDLED;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch b/target/linux/bcm27xx/patches-5.15/950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch
new file mode 100644
index 0000000000..c7cdcacb88
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch
@@ -0,0 +1,30 @@
+From d58e0cb66d35de123f2219f4609f733e7a11a45d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 15 Apr 2021 16:18:16 +0100
+Subject: [PATCH] drm/vc4: Add correct stop condition to
+ vc4_dsi_encoder_disable iteration
+
+vc4_dsi_encoder_disable is partially an open coded version of
+drm_bridge_chain_disable, but it missed a termination condition
+in the loop for ->disable which meant that no post_disable
+calls were made.
+
+Add in the termination clause.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -803,6 +803,9 @@ static void vc4_dsi_encoder_disable(stru
+ 	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
+ 		if (iter->funcs->disable)
+ 			iter->funcs->disable(iter);
++
++		if (iter == dsi->bridge)
++			break;
+ 	}
+ 
+ 	vc4_dsi_ulps(dsi, true);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0439-drm-atomic-Don-t-fixup-modes-that-haven-t-been-reset.patch b/target/linux/bcm27xx/patches-5.15/950-0439-drm-atomic-Don-t-fixup-modes-that-haven-t-been-reset.patch
new file mode 100644
index 0000000000..657e3969a6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0439-drm-atomic-Don-t-fixup-modes-that-haven-t-been-reset.patch
@@ -0,0 +1,24 @@
+From ff6d3491b0c6d46eaac2e21e1e4ae85af8fa53ac Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 7 Jan 2021 16:30:55 +0000
+Subject: [PATCH] drm/atomic: Don't fixup modes that haven't been reset
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/drm_atomic_helper.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/gpu/drm/drm_atomic_helper.c
++++ b/drivers/gpu/drm/drm_atomic_helper.c
+@@ -431,6 +431,11 @@ mode_fixup(struct drm_atomic_state *stat
+ 		new_crtc_state =
+ 			drm_atomic_get_new_crtc_state(state, new_conn_state->crtc);
+ 
++		if (!new_crtc_state->mode_changed &&
++		    !new_crtc_state->connectors_changed) {
++			continue;
++		}
++
+ 		/*
+ 		 * Each encoder has at most one connector (since we always steal
+ 		 * it away), so we won't call ->mode_fixup twice.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0440-clk-Always-clamp-the-rounded-rate.patch b/target/linux/bcm27xx/patches-5.15/950-0440-clk-Always-clamp-the-rounded-rate.patch
new file mode 100644
index 0000000000..6eb5c947ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0440-clk-Always-clamp-the-rounded-rate.patch
@@ -0,0 +1,28 @@
+From 5efe54b26d470785883bec0264d8d5e145715038 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 5 May 2021 15:35:34 +0200
+Subject: [PATCH] clk: Always clamp the rounded rate
+
+The current core while setting the min and max rate properly in the
+clk_request structure will not make sure that the requested rate is
+within these boundaries, leaving it to each and every driver to make
+sure it is.
+
+Add a clamp call to make sure it's always done.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1347,6 +1347,8 @@ static int clk_core_determine_round_nolo
+ 	if (!core)
+ 		return 0;
+ 
++	req->rate = clamp(req->rate, req->min_rate, req->max_rate);
++
+ 	/*
+ 	 * At this point, core protection will be disabled
+ 	 * - if the provider is not protected at all
diff --git a/target/linux/bcm27xx/patches-5.15/950-0441-drm-vc4-Increase-the-core-clock-based-on-HVS-load.patch b/target/linux/bcm27xx/patches-5.15/950-0441-drm-vc4-Increase-the-core-clock-based-on-HVS-load.patch
new file mode 100644
index 0000000000..b184172f8d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0441-drm-vc4-Increase-the-core-clock-based-on-HVS-load.patch
@@ -0,0 +1,57 @@
+From 7971426f2462b02ea1bf12d902ca066e07eeb64b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 26 May 2021 16:13:02 +0200
+Subject: [PATCH] drm/vc4: Increase the core clock based on HVS load
+
+Depending on a given HVS output (HVS to PixelValves) and input (planes
+attached to a channel) load, the HVS needs for the core clock to be
+raised above its boot time default.
+
+Failing to do so will result in a vblank timeout and a stalled display
+pipeline.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_drv.h |  1 +
+ drivers/gpu/drm/vc4/vc4_kms.c | 13 +++++++++++++
+ 2 files changed, 14 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -321,6 +321,7 @@ struct vc4_hvs {
+ 	u32 __iomem *dlist;
+ 
+ 	struct clk *core_clk;
++	struct clk_request *core_req;
+ 
+ 	/* Memory manager for CRTCs to allocate space in the display
+ 	 * list.  Units are dwords.
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -391,6 +391,11 @@ static void vc4_atomic_commit_tail(struc
+ 						new_hvs_state->core_clock_rate);
+ 
+ 		core_req = clk_request_start(hvs->core_clk, core_rate);
++		/*
++		 * And remove the previous one based on the HVS
++		 * requirements if any.
++		 */
++               clk_request_done(hvs->core_req);
+ 	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+@@ -418,6 +423,14 @@ static void vc4_atomic_commit_tail(struc
+ 		drm_dbg(dev, "Running the core clock at %lu Hz\n",
+ 			new_hvs_state->core_clock_rate);
+ 
++		/*
++		 * Request a clock rate based on the current HVS
++		 * requirements.
++		 */
++		hvs->core_req = clk_request_start(hvs->core_clk,
++						  new_hvs_state->core_clock_rate);
++
++		/* And drop the temporary request */
+ 		clk_request_done(core_req);
+ 	}
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0442-drm-vc4-hdmi-Simplify-the-connector-state-retrieval.patch b/target/linux/bcm27xx/patches-5.15/950-0442-drm-vc4-hdmi-Simplify-the-connector-state-retrieval.patch
new file mode 100644
index 0000000000..b84a607ea0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0442-drm-vc4-hdmi-Simplify-the-connector-state-retrieval.patch
@@ -0,0 +1,51 @@
+From fbd09981ff7ecefd9514325bdbfa2b4df4b4f017 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 27 Oct 2021 14:38:50 +0100
+Subject: [PATCH] drm/vc4: hdmi: Simplify the connector state retrieval
+
+When we have the entire DRM state, retrieving the connector state only
+requires the drm_connector pointer. Fortunately for us, we have
+allocated it as a part of the vc4_hdmi structure, so we can retrieve get
+a pointer by simply accessing our field in that structure.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 21 +++------------------
+ 1 file changed, 3 insertions(+), 18 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1002,30 +1002,15 @@ static void vc4_hdmi_recenter_fifo(struc
+ 		  "VC4_HDMI_FIFO_CTL_RECENTER_DONE");
+ }
+ 
+-static struct drm_connector_state *
+-vc4_hdmi_encoder_get_connector_state(struct drm_encoder *encoder,
+-				     struct drm_atomic_state *state)
+-{
+-	struct drm_connector_state *conn_state;
+-	struct drm_connector *connector;
+-	unsigned int i;
+-
+-	for_each_new_connector_in_state(state, connector, conn_state, i) {
+-		if (conn_state->best_encoder == encoder)
+-			return conn_state;
+-	}
+-
+-	return NULL;
+-}
+-
+ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
+ 						struct drm_atomic_state *state)
+ {
++	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_connector *connector = &vc4_hdmi->connector;
+ 	struct drm_connector_state *conn_state =
+-		vc4_hdmi_encoder_get_connector_state(encoder, state);
++		drm_atomic_get_new_connector_state(state, connector);
+ 	struct vc4_hdmi_connector_state *vc4_conn_state =
+ 		conn_state_to_vc4_hdmi_conn_state(conn_state);
+-	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	unsigned long pixel_rate = vc4_conn_state->pixel_rate;
+ 	unsigned long bvb_rate, hsm_rate;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch b/target/linux/bcm27xx/patches-5.15/950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch
new file mode 100644
index 0000000000..20cb8d3ad7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch
@@ -0,0 +1,83 @@
+From 66caecfcf414d8e5153a0725195413db3c992dae Mon Sep 17 00:00:00 2001
+From: kFYatek <4499762+kFYatek@users.noreply.github.com>
+Date: Wed, 23 Jun 2021 01:11:26 +0200
+Subject: [PATCH] drm/vc4: Fix timings for interlaced modes
+
+Increase the number of post-sync blanking lines on odd fields instead of
+decreasing it on even fields. This makes the total number of lines
+properly match the modelines.
+
+Additionally fix the value of PV_VCONTROL_ODD_DELAY, which did not take
+pixels_per_clock into account, causing some displays to invert the
+fields when driven by bcm2711.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c |  7 ++++---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++++------
+ 2 files changed, 10 insertions(+), 9 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -344,7 +344,8 @@ static void vc4_crtc_config_pv(struct dr
+ 				 PV_HORZB_HACTIVE));
+ 
+ 	CRTC_WRITE(PV_VERTA,
+-		   VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end,
++		   VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end +
++				 interlace,
+ 				 PV_VERTA_VBP) |
+ 		   VC4_SET_FIELD(mode->crtc_vsync_end - mode->crtc_vsync_start,
+ 				 PV_VERTA_VSYNC));
+@@ -356,7 +357,7 @@ static void vc4_crtc_config_pv(struct dr
+ 	if (interlace) {
+ 		CRTC_WRITE(PV_VERTA_EVEN,
+ 			   VC4_SET_FIELD(mode->crtc_vtotal -
+-					 mode->crtc_vsync_end - 1,
++					 mode->crtc_vsync_end,
+ 					 PV_VERTA_VBP) |
+ 			   VC4_SET_FIELD(mode->crtc_vsync_end -
+ 					 mode->crtc_vsync_start,
+@@ -376,7 +377,7 @@ static void vc4_crtc_config_pv(struct dr
+ 			   PV_VCONTROL_CONTINUOUS |
+ 			   (is_dsi ? PV_VCONTROL_DSI : 0) |
+ 			   PV_VCONTROL_INTERLACE |
+-			   VC4_SET_FIELD(mode->htotal * pixel_rep / 2,
++			   VC4_SET_FIELD(mode->htotal * pixel_rep / (2 * ppc),
+ 					 PV_VCONTROL_ODD_DELAY));
+ 		CRTC_WRITE(PV_VSYNCD_EVEN, 0);
+ 	} else {
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -840,12 +840,12 @@ static void vc4_hdmi_set_timings(struct
+ 				   VC4_HDMI_VERTA_VFP) |
+ 		     VC4_SET_FIELD(mode->crtc_vdisplay, VC4_HDMI_VERTA_VAL));
+ 	u32 vertb = (VC4_SET_FIELD(0, VC4_HDMI_VERTB_VSPO) |
+-		     VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end,
++		     VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end +
++				   interlaced,
+ 				   VC4_HDMI_VERTB_VBP));
+ 	u32 vertb_even = (VC4_SET_FIELD(0, VC4_HDMI_VERTB_VSPO) |
+ 			  VC4_SET_FIELD(mode->crtc_vtotal -
+-					mode->crtc_vsync_end -
+-					interlaced,
++					mode->crtc_vsync_end,
+ 					VC4_HDMI_VERTB_VBP));
+ 	unsigned long flags;
+ 
+@@ -891,12 +891,12 @@ static void vc5_hdmi_set_timings(struct
+ 				   VC5_HDMI_VERTA_VFP) |
+ 		     VC4_SET_FIELD(mode->crtc_vdisplay, VC5_HDMI_VERTA_VAL));
+ 	u32 vertb = (VC4_SET_FIELD(0, VC5_HDMI_VERTB_VSPO) |
+-		     VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end,
++		     VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end +
++				   interlaced,
+ 				   VC4_HDMI_VERTB_VBP));
+ 	u32 vertb_even = (VC4_SET_FIELD(0, VC5_HDMI_VERTB_VSPO) |
+ 			  VC4_SET_FIELD(mode->crtc_vtotal -
+-					mode->crtc_vsync_end -
+-					interlaced,
++					mode->crtc_vsync_end,
+ 					VC4_HDMI_VERTB_VBP));
+ 	unsigned long flags;
+ 	unsigned char gcp;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0444-dwc_otg-Update-NetBSD-usb.h-header-licence.patch b/target/linux/bcm27xx/patches-5.15/950-0444-dwc_otg-Update-NetBSD-usb.h-header-licence.patch
new file mode 100644
index 0000000000..1b159e12fc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0444-dwc_otg-Update-NetBSD-usb.h-header-licence.patch
@@ -0,0 +1,33 @@
+From 9d61ad21064f8c084c4b39df3344e0cd1beaf40e Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 5 Jul 2021 19:38:21 +0100
+Subject: [PATCH] dwc_otg: Update NetBSD usb.h header licence
+
+NetBSD have changed their licensing requirements such that the 2-clause
+licence is preferred. Update usb.h in the downstream dwc_otg code
+accordingly.
+
+See https://www.netbsd.org/about/redistribution.html for more
+information.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/usb/host/dwc_common_port/usb.h | 7 -------
+ 1 file changed, 7 deletions(-)
+
+--- a/drivers/usb/host/dwc_common_port/usb.h
++++ b/drivers/usb/host/dwc_common_port/usb.h
+@@ -14,13 +14,6 @@
+  * 2. Redistributions in binary form must reproduce the above copyright
+  *    notice, this list of conditions and the following disclaimer in the
+  *    documentation and/or other materials provided with the distribution.
+- * 3. All advertising materials mentioning features or use of this software
+- *    must display the following acknowledgement:
+- *        This product includes software developed by the NetBSD
+- *        Foundation, Inc. and its contributors.
+- * 4. Neither the name of The NetBSD Foundation nor the names of its
+- *    contributors may be used to endorse or promote products derived
+- *    from this software without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
diff --git a/target/linux/bcm27xx/patches-5.15/950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch b/target/linux/bcm27xx/patches-5.15/950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch
new file mode 100644
index 0000000000..1ad0e39a5b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch
@@ -0,0 +1,38 @@
+From 6847ea09ea00a9c56d33b4cbaf971c20a08e92f7 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 12 Jul 2021 12:27:59 +0100
+Subject: [PATCH] drm/vc4: Fix margin calculations for the right/bottom
+ edges
+
+The calculations clipped the right/bottom edge of the clipped
+range based on the left/top margins.
+
+Fixes: 666e73587f90 ("drm/vc4: Take margin setup into account when updating planes")
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -310,16 +310,16 @@ static int vc4_plane_margins_adj(struct
+ 					       adjhdisplay,
+ 					       crtc_state->mode.hdisplay);
+ 	vc4_pstate->crtc_x += left;
+-	if (vc4_pstate->crtc_x > crtc_state->mode.hdisplay - left)
+-		vc4_pstate->crtc_x = crtc_state->mode.hdisplay - left;
++	if (vc4_pstate->crtc_x > crtc_state->mode.hdisplay - right)
++		vc4_pstate->crtc_x = crtc_state->mode.hdisplay - right;
+ 
+ 	adjvdisplay = crtc_state->mode.vdisplay - (top + bottom);
+ 	vc4_pstate->crtc_y = DIV_ROUND_CLOSEST(vc4_pstate->crtc_y *
+ 					       adjvdisplay,
+ 					       crtc_state->mode.vdisplay);
+ 	vc4_pstate->crtc_y += top;
+-	if (vc4_pstate->crtc_y > crtc_state->mode.vdisplay - top)
+-		vc4_pstate->crtc_y = crtc_state->mode.vdisplay - top;
++	if (vc4_pstate->crtc_y > crtc_state->mode.vdisplay - bottom)
++		vc4_pstate->crtc_y = crtc_state->mode.vdisplay - bottom;
+ 
+ 	vc4_pstate->crtc_w = DIV_ROUND_CLOSEST(vc4_pstate->crtc_w *
+ 					       adjhdisplay,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0446-drm-vc4-Fix-timings-for-VEC-modes.patch b/target/linux/bcm27xx/patches-5.15/950-0446-drm-vc4-Fix-timings-for-VEC-modes.patch
new file mode 100644
index 0000000000..56b635d459
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0446-drm-vc4-Fix-timings-for-VEC-modes.patch
@@ -0,0 +1,148 @@
+From 3edc6e2d440803dfe22288c3ea7d77b4ab934ec8 Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:07:30 +0200
+Subject: [PATCH] drm/vc4: Fix timings for VEC modes
+
+This commit fixes vertical timings of the VEC (composite output) modes
+to accurately represent the 525-line ("NTSC") and 625-line ("PAL") ITU-R
+standards.
+
+Previous timings were actually defined as 502 and 601 lines, resulting
+in non-standard 62.69 Hz and 52 Hz signals being generated,
+respectively.
+
+Changes to vc4_crtc.c have also been made, to make the PixelValve
+vertical timings accurately correspond to the DRM modeline in interlaced
+modes. The resulting VERTA/VERTB register values have been verified
+against the reference values set by the Raspberry Pi firmware.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 70 +++++++++++++++++++++-------------
+ drivers/gpu/drm/vc4/vc4_vec.c  |  4 +-
+ 2 files changed, 45 insertions(+), 29 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -318,8 +318,14 @@ static void vc4_crtc_config_pv(struct dr
+ 	bool is_dsi = (vc4_encoder->type == VC4_ENCODER_TYPE_DSI0 ||
+ 		       vc4_encoder->type == VC4_ENCODER_TYPE_DSI1);
+ 	bool is_dsi1 = vc4_encoder->type == VC4_ENCODER_TYPE_DSI1;
++	bool is_vec = vc4_encoder->type == VC4_ENCODER_TYPE_VEC;
+ 	u32 format = is_dsi1 ? PV_CONTROL_FORMAT_DSIV_24 : PV_CONTROL_FORMAT_24;
+ 	u8 ppc = pv_data->pixels_per_clock;
++
++	u16 vert_bp = mode->crtc_vtotal - mode->crtc_vsync_end;
++	u16 vert_sync = mode->crtc_vsync_end - mode->crtc_vsync_start;
++	u16 vert_fp = mode->crtc_vsync_start - mode->crtc_vdisplay;
++
+ 	bool debug_dump_regs = false;
+ 
+ 	if (debug_dump_regs) {
+@@ -343,49 +349,59 @@ static void vc4_crtc_config_pv(struct dr
+ 		   VC4_SET_FIELD(mode->hdisplay * pixel_rep / ppc,
+ 				 PV_HORZB_HACTIVE));
+ 
+-	CRTC_WRITE(PV_VERTA,
+-		   VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end +
+-				 interlace,
+-				 PV_VERTA_VBP) |
+-		   VC4_SET_FIELD(mode->crtc_vsync_end - mode->crtc_vsync_start,
+-				 PV_VERTA_VSYNC));
+-	CRTC_WRITE(PV_VERTB,
+-		   VC4_SET_FIELD(mode->crtc_vsync_start - mode->crtc_vdisplay,
+-				 PV_VERTB_VFP) |
+-		   VC4_SET_FIELD(mode->crtc_vdisplay, PV_VERTB_VACTIVE));
+-
+ 	if (interlace) {
++		bool odd_field_first = false;
++		u32 field_delay = mode->htotal * pixel_rep / (2 * ppc);
++		u16 vert_bp_even = vert_bp;
++		u16 vert_fp_even = vert_fp;
++
++		if (is_vec) {
++			/* VEC (composite output) */
++			++field_delay;
++			if (mode->htotal == 858) {
++				/* 525-line mode (NTSC or PAL-M) */
++				odd_field_first = true;
++			}
++		}
++
++		if (odd_field_first)
++			++vert_fp_even;
++		else
++			++vert_bp;
++
+ 		CRTC_WRITE(PV_VERTA_EVEN,
+-			   VC4_SET_FIELD(mode->crtc_vtotal -
+-					 mode->crtc_vsync_end,
+-					 PV_VERTA_VBP) |
+-			   VC4_SET_FIELD(mode->crtc_vsync_end -
+-					 mode->crtc_vsync_start,
+-					 PV_VERTA_VSYNC));
++			   VC4_SET_FIELD(vert_bp_even, PV_VERTA_VBP) |
++			   VC4_SET_FIELD(vert_sync, PV_VERTA_VSYNC));
+ 		CRTC_WRITE(PV_VERTB_EVEN,
+-			   VC4_SET_FIELD(mode->crtc_vsync_start -
+-					 mode->crtc_vdisplay,
+-					 PV_VERTB_VFP) |
++			   VC4_SET_FIELD(vert_fp_even, PV_VERTB_VFP) |
+ 			   VC4_SET_FIELD(mode->crtc_vdisplay, PV_VERTB_VACTIVE));
+ 
+-		/* We set up first field even mode for HDMI.  VEC's
+-		 * NTSC mode would want first field odd instead, once
+-		 * we support it (to do so, set ODD_FIRST and put the
+-		 * delay in VSYNCD_EVEN instead).
++		/* We set up first field even mode for HDMI and VEC's PAL.
++		 * For NTSC, we need first field odd.
+ 		 */
+ 		CRTC_WRITE(PV_V_CONTROL,
+ 			   PV_VCONTROL_CONTINUOUS |
+ 			   (is_dsi ? PV_VCONTROL_DSI : 0) |
+ 			   PV_VCONTROL_INTERLACE |
+-			   VC4_SET_FIELD(mode->htotal * pixel_rep / (2 * ppc),
+-					 PV_VCONTROL_ODD_DELAY));
+-		CRTC_WRITE(PV_VSYNCD_EVEN, 0);
++			   (odd_field_first
++				   ? PV_VCONTROL_ODD_FIRST
++				   : VC4_SET_FIELD(field_delay,
++						   PV_VCONTROL_ODD_DELAY)));
++		CRTC_WRITE(PV_VSYNCD_EVEN,
++			   (odd_field_first ? field_delay : 0));
+ 	} else {
+ 		CRTC_WRITE(PV_V_CONTROL,
+ 			   PV_VCONTROL_CONTINUOUS |
+ 			   (is_dsi ? PV_VCONTROL_DSI : 0));
+ 	}
+ 
++	CRTC_WRITE(PV_VERTA,
++		   VC4_SET_FIELD(vert_bp, PV_VERTA_VBP) |
++		   VC4_SET_FIELD(vert_sync, PV_VERTA_VSYNC));
++	CRTC_WRITE(PV_VERTB,
++		   VC4_SET_FIELD(vert_fp, PV_VERTB_VFP) |
++		   VC4_SET_FIELD(mode->crtc_vdisplay, PV_VERTB_VACTIVE));
++
+ 	if (is_dsi)
+ 		CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -256,7 +256,7 @@ static void vc4_vec_ntsc_j_mode_set(stru
+ static const struct drm_display_mode ntsc_mode = {
+ 	DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
+-		 480, 480 + 3, 480 + 3 + 3, 480 + 3 + 3 + 16, 0,
++		 480, 480 + 7, 480 + 7 + 6, 525, 0,
+ 		 DRM_MODE_FLAG_INTERLACE)
+ };
+ 
+@@ -278,7 +278,7 @@ static void vc4_vec_pal_m_mode_set(struc
+ static const struct drm_display_mode pal_mode = {
+ 	DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
+-		 576, 576 + 2, 576 + 2 + 3, 576 + 2 + 3 + 20, 0,
++		 576, 576 + 4, 576 + 4 + 6, 625, 0,
+ 		 DRM_MODE_FLAG_INTERLACE)
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0447-drm-vc4-Refactor-VEC-TV-mode-setting.patch b/target/linux/bcm27xx/patches-5.15/950-0447-drm-vc4-Refactor-VEC-TV-mode-setting.patch
new file mode 100644
index 0000000000..0af549ba58
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0447-drm-vc4-Refactor-VEC-TV-mode-setting.patch
@@ -0,0 +1,167 @@
+From 723c2a1a51f64c381ab0b5ad662e3411a6bc9fca Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:07:49 +0200
+Subject: [PATCH] drm/vc4: Refactor VEC TV mode setting
+
+Change the mode_set function pointer logic to declarative config0,
+config1 and custom_freq fields, to make TV mode setting logic more
+concise and uniform.
+
+Additionally, remove the superfluous tv_mode field, which was redundant
+with the mode field in struct drm_tv_connector_state.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_vec.c | 69 +++++++++++------------------------
+ 1 file changed, 22 insertions(+), 47 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -170,8 +170,6 @@ struct vc4_vec {
+ 
+ 	struct clk *clock;
+ 
+-	const struct vc4_vec_tv_mode *tv_mode;
+-
+ 	struct debugfs_regset32 regset;
+ };
+ 
+@@ -211,7 +209,9 @@ enum vc4_vec_tv_mode_id {
+ 
+ struct vc4_vec_tv_mode {
+ 	const struct drm_display_mode *mode;
+-	void (*mode_set)(struct vc4_vec *vec);
++	u32 config0;
++	u32 config1;
++	u32 custom_freq;
+ };
+ 
+ static const struct debugfs_reg32 vec_regs[] = {
+@@ -241,18 +241,6 @@ static const struct debugfs_reg32 vec_re
+ 	VC4_REG32(VEC_DAC_MISC),
+ };
+ 
+-static void vc4_vec_ntsc_mode_set(struct vc4_vec *vec)
+-{
+-	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_NTSC_STD | VEC_CONFIG0_PDEN);
+-	VEC_WRITE(VEC_CONFIG1, VEC_CONFIG1_C_CVBS_CVBS);
+-}
+-
+-static void vc4_vec_ntsc_j_mode_set(struct vc4_vec *vec)
+-{
+-	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_NTSC_STD);
+-	VEC_WRITE(VEC_CONFIG1, VEC_CONFIG1_C_CVBS_CVBS);
+-}
+-
+ static const struct drm_display_mode ntsc_mode = {
+ 	DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
+@@ -260,21 +248,6 @@ static const struct drm_display_mode nts
+ 		 DRM_MODE_FLAG_INTERLACE)
+ };
+ 
+-static void vc4_vec_pal_mode_set(struct vc4_vec *vec)
+-{
+-	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_PAL_BDGHI_STD);
+-	VEC_WRITE(VEC_CONFIG1, VEC_CONFIG1_C_CVBS_CVBS);
+-}
+-
+-static void vc4_vec_pal_m_mode_set(struct vc4_vec *vec)
+-{
+-	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_PAL_BDGHI_STD);
+-	VEC_WRITE(VEC_CONFIG1,
+-		  VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ);
+-	VEC_WRITE(VEC_FREQ3_2, 0x223b);
+-	VEC_WRITE(VEC_FREQ1_0, 0x61d1);
+-}
+-
+ static const struct drm_display_mode pal_mode = {
+ 	DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
+@@ -285,19 +258,24 @@ static const struct drm_display_mode pal
+ static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = {
+ 	[VC4_VEC_TV_MODE_NTSC] = {
+ 		.mode = &ntsc_mode,
+-		.mode_set = vc4_vec_ntsc_mode_set,
++		.config0 = VEC_CONFIG0_NTSC_STD | VEC_CONFIG0_PDEN,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_NTSC_J] = {
+ 		.mode = &ntsc_mode,
+-		.mode_set = vc4_vec_ntsc_j_mode_set,
++		.config0 = VEC_CONFIG0_NTSC_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL] = {
+ 		.mode = &pal_mode,
+-		.mode_set = vc4_vec_pal_mode_set,
++		.config0 = VEC_CONFIG0_PAL_BDGHI_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL_M] = {
+ 		.mode = &pal_mode,
+-		.mode_set = vc4_vec_pal_m_mode_set,
++		.config0 = VEC_CONFIG0_PAL_BDGHI_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ,
++		.custom_freq = 0x223b61d1,
+ 	},
+ };
+ 
+@@ -367,7 +345,6 @@ static struct drm_connector *vc4_vec_con
+ 	drm_object_attach_property(&connector->base,
+ 				   dev->mode_config.tv_mode_property,
+ 				   VC4_VEC_TV_MODE_NTSC);
+-	vec->tv_mode = &vc4_vec_tv_modes[VC4_VEC_TV_MODE_NTSC];
+ 
+ 	drm_connector_attach_encoder(connector, vec->encoder);
+ 
+@@ -400,6 +377,7 @@ static void vc4_vec_encoder_enable(struc
+ {
+ 	struct vc4_vec_encoder *vc4_vec_encoder = to_vc4_vec_encoder(encoder);
+ 	struct vc4_vec *vec = vc4_vec_encoder->vec;
++	unsigned int tv_mode = vec->connector->state->tv.mode;
+ 	int ret;
+ 
+ 	ret = pm_runtime_get_sync(&vec->pdev->dev);
+@@ -455,7 +433,15 @@ static void vc4_vec_encoder_enable(struc
+ 	/* Mask all interrupts. */
+ 	VEC_WRITE(VEC_MASK0, 0);
+ 
+-	vec->tv_mode->mode_set(vec);
++	VEC_WRITE(VEC_CONFIG0, vc4_vec_tv_modes[tv_mode].config0);
++	VEC_WRITE(VEC_CONFIG1, vc4_vec_tv_modes[tv_mode].config1);
++	if (vc4_vec_tv_modes[tv_mode].custom_freq != 0) {
++		VEC_WRITE(VEC_FREQ3_2,
++			  (vc4_vec_tv_modes[tv_mode].custom_freq >> 16) &
++			  0xffff);
++		VEC_WRITE(VEC_FREQ1_0,
++			  vc4_vec_tv_modes[tv_mode].custom_freq & 0xffff);
++	}
+ 
+ 	VEC_WRITE(VEC_DAC_MISC,
+ 		  VEC_DAC_MISC_VID_ACT | VEC_DAC_MISC_DAC_RST_N);
+@@ -470,16 +456,6 @@ static bool vc4_vec_encoder_mode_fixup(s
+ 	return true;
+ }
+ 
+-static void vc4_vec_encoder_atomic_mode_set(struct drm_encoder *encoder,
+-					struct drm_crtc_state *crtc_state,
+-					struct drm_connector_state *conn_state)
+-{
+-	struct vc4_vec_encoder *vc4_vec_encoder = to_vc4_vec_encoder(encoder);
+-	struct vc4_vec *vec = vc4_vec_encoder->vec;
+-
+-	vec->tv_mode = &vc4_vec_tv_modes[conn_state->tv.mode];
+-}
+-
+ static int vc4_vec_encoder_atomic_check(struct drm_encoder *encoder,
+ 					struct drm_crtc_state *crtc_state,
+ 					struct drm_connector_state *conn_state)
+@@ -500,7 +476,6 @@ static const struct drm_encoder_helper_f
+ 	.enable = vc4_vec_encoder_enable,
+ 	.mode_fixup = vc4_vec_encoder_mode_fixup,
+ 	.atomic_check = vc4_vec_encoder_atomic_check,
+-	.atomic_mode_set = vc4_vec_encoder_atomic_mode_set,
+ };
+ 
+ static const struct vc4_vec_variant bcm2835_vec_variant = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0448-drm-vc4-Fix-definition-of-PAL-M-mode.patch b/target/linux/bcm27xx/patches-5.15/950-0448-drm-vc4-Fix-definition-of-PAL-M-mode.patch
new file mode 100644
index 0000000000..762e877049
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0448-drm-vc4-Fix-definition-of-PAL-M-mode.patch
@@ -0,0 +1,77 @@
+From 967b49174527035216ee4d54c82c4528fed0be55 Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:07:53 +0200
+Subject: [PATCH] drm/vc4: Fix definition of PAL-M mode
+
+PAL-M is a Brazilian analog TV standard that uses a PAL-style chroma
+subcarrier at 3.575611[888111] MHz on top of 525-line (480i60) timings.
+This commit makes the driver actually use the proper VEC preset for this
+mode instead of just changing PAL subcarrier frequency.
+
+DRM mode constant names have also been changed, as they no longer
+correspond to the "NTSC" or "PAL" terms.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_vec.c | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -68,6 +68,7 @@
+ #define VEC_CONFIG0_STD_MASK		GENMASK(1, 0)
+ #define VEC_CONFIG0_NTSC_STD		0
+ #define VEC_CONFIG0_PAL_BDGHI_STD	1
++#define VEC_CONFIG0_PAL_M_STD		2
+ #define VEC_CONFIG0_PAL_N_STD		3
+ 
+ #define VEC_SCHPH			0x108
+@@ -241,14 +242,14 @@ static const struct debugfs_reg32 vec_re
+ 	VC4_REG32(VEC_DAC_MISC),
+ };
+ 
+-static const struct drm_display_mode ntsc_mode = {
++static const struct drm_display_mode drm_mode_480i = {
+ 	DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
+ 		 480, 480 + 7, 480 + 7 + 6, 525, 0,
+ 		 DRM_MODE_FLAG_INTERLACE)
+ };
+ 
+-static const struct drm_display_mode pal_mode = {
++static const struct drm_display_mode drm_mode_576i = {
+ 	DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
+ 		 576, 576 + 4, 576 + 4 + 6, 625, 0,
+@@ -257,25 +258,24 @@ static const struct drm_display_mode pal
+ 
+ static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = {
+ 	[VC4_VEC_TV_MODE_NTSC] = {
+-		.mode = &ntsc_mode,
++		.mode = &drm_mode_480i,
+ 		.config0 = VEC_CONFIG0_NTSC_STD | VEC_CONFIG0_PDEN,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_NTSC_J] = {
+-		.mode = &ntsc_mode,
++		.mode = &drm_mode_480i,
+ 		.config0 = VEC_CONFIG0_NTSC_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL] = {
+-		.mode = &pal_mode,
++		.mode = &drm_mode_576i,
+ 		.config0 = VEC_CONFIG0_PAL_BDGHI_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL_M] = {
+-		.mode = &pal_mode,
+-		.config0 = VEC_CONFIG0_PAL_BDGHI_STD,
+-		.config1 = VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ,
+-		.custom_freq = 0x223b61d1,
++		.mode = &drm_mode_480i,
++		.config0 = VEC_CONFIG0_PAL_M_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0449-drm-vc4-Add-support-for-more-analog-TV-standards.patch b/target/linux/bcm27xx/patches-5.15/950-0449-drm-vc4-Add-support-for-more-analog-TV-standards.patch
new file mode 100644
index 0000000000..b2103efafa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0449-drm-vc4-Add-support-for-more-analog-TV-standards.patch
@@ -0,0 +1,148 @@
+From c8d584240d12646a609276e56f3b884f954ad3ea Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:07:58 +0200
+Subject: [PATCH] drm/vc4: Add support for more analog TV standards
+
+Add support for the following composite output modes (all of them are
+somewhat more obscure than the previously defined ones):
+
+- NTSC_443 - NTSC-style signal with the chroma subcarrier shifted to
+  4.43361875 MHz (the PAL subcarrier frequency). Never used for
+  broadcasting, but sometimes used as a hack to play NTSC content in PAL
+  regions (e.g. on VCRs).
+- PAL_N - PAL with alternative chroma subcarrier frequency,
+  3.58205625 MHz. Used as a broadcast standard in Argentina, Paraguay
+  and Uruguay to fit 576i50 with colour in 6 MHz channel raster.
+- PAL60 - 480i60 signal with PAL-style color at normal European PAL
+  frequency. Another non-standard, non-broadcast mode, used in similar
+  contexts as NTSC_443. Some displays support one but not the other.
+- SECAM - French frequency-modulated analog color standard; also have
+  been broadcast in Eastern Europe and various parts of Africa and Asia.
+  Uses the same 576i50 timings as PAL.
+
+Also added some comments explaining color subcarrier frequency
+registers.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_vec.c | 63 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 63 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -45,6 +45,7 @@
+ #define VEC_CONFIG0_YDEL(x)		((x) << 26)
+ #define VEC_CONFIG0_CDEL_MASK		GENMASK(25, 24)
+ #define VEC_CONFIG0_CDEL(x)		((x) << 24)
++#define VEC_CONFIG0_SECAM_STD		BIT(21)
+ #define VEC_CONFIG0_PBPR_FIL		BIT(18)
+ #define VEC_CONFIG0_CHROMA_GAIN_MASK	GENMASK(17, 16)
+ #define VEC_CONFIG0_CHROMA_GAIN_UNITY	(0 << 16)
+@@ -75,6 +76,27 @@
+ #define VEC_SOFT_RESET			0x10c
+ #define VEC_CLMP0_START			0x144
+ #define VEC_CLMP0_END			0x148
++
++/*
++ * These set the color subcarrier frequency
++ * if VEC_CONFIG1_CUSTOM_FREQ is enabled.
++ *
++ * VEC_FREQ1_0 contains the most significant 16-bit half-word,
++ * VEC_FREQ3_2 contains the least significant 16-bit half-word.
++ * 0x80000000 seems to be equivalent to the pixel clock
++ * (which itself is the VEC clock divided by 8).
++ *
++ * Reference values (with the default pixel clock of 13.5 MHz):
++ *
++ * NTSC  (3579545.[45] Hz)     - 0x21F07C1F
++ * PAL   (4433618.75 Hz)       - 0x2A098ACB
++ * PAL-M (3575611.[888111] Hz) - 0x21E6EFE3
++ * PAL-N (3582056.25 Hz)       - 0x21F69446
++ *
++ * NOTE: For SECAM, it is used as the Dr center frequency,
++ * regardless of whether VEC_CONFIG1_CUSTOM_FREQ is enabled or not;
++ * that is specified as 4406250 Hz, which corresponds to 0x29C71C72.
++ */
+ #define VEC_FREQ3_2			0x180
+ #define VEC_FREQ1_0			0x184
+ 
+@@ -117,6 +139,14 @@
+ 
+ #define VEC_INTERRUPT_CONTROL		0x190
+ #define VEC_INTERRUPT_STATUS		0x194
++
++/*
++ * Db center frequency for SECAM; the clock for this is the same as for
++ * VEC_FREQ3_2/VEC_FREQ1_0, which is used for Dr center frequency.
++ *
++ * This is specified as 4250000 Hz, which corresponds to 0x284BDA13.
++ * That is also the default value, so no need to set it explicitly.
++ */
+ #define VEC_FCW_SECAM_B			0x198
+ #define VEC_SECAM_GAIN_VAL		0x19c
+ 
+@@ -204,8 +234,12 @@ struct vc4_vec_connector {
+ enum vc4_vec_tv_mode_id {
+ 	VC4_VEC_TV_MODE_NTSC,
+ 	VC4_VEC_TV_MODE_NTSC_J,
++	VC4_VEC_TV_MODE_NTSC_443,
+ 	VC4_VEC_TV_MODE_PAL,
+ 	VC4_VEC_TV_MODE_PAL_M,
++	VC4_VEC_TV_MODE_PAL_N,
++	VC4_VEC_TV_MODE_PAL60,
++	VC4_VEC_TV_MODE_SECAM,
+ };
+ 
+ struct vc4_vec_tv_mode {
+@@ -267,6 +301,13 @@ static const struct vc4_vec_tv_mode vc4_
+ 		.config0 = VEC_CONFIG0_NTSC_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
++	[VC4_VEC_TV_MODE_NTSC_443] = {
++		/* NTSC with PAL chroma frequency */
++		.mode = &drm_mode_480i,
++		.config0 = VEC_CONFIG0_NTSC_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ,
++		.custom_freq = 0x2a098acb,
++	},
+ 	[VC4_VEC_TV_MODE_PAL] = {
+ 		.mode = &drm_mode_576i,
+ 		.config0 = VEC_CONFIG0_PAL_BDGHI_STD,
+@@ -277,6 +318,24 @@ static const struct vc4_vec_tv_mode vc4_
+ 		.config0 = VEC_CONFIG0_PAL_M_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
++	[VC4_VEC_TV_MODE_PAL_N] = {
++		.mode = &drm_mode_576i,
++		.config0 = VEC_CONFIG0_PAL_N_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
++	},
++	[VC4_VEC_TV_MODE_PAL60] = {
++		/* PAL-M with chroma frequency of regular PAL */
++		.mode = &drm_mode_480i,
++		.config0 = VEC_CONFIG0_PAL_M_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ,
++		.custom_freq = 0x2a098acb,
++	},
++	[VC4_VEC_TV_MODE_SECAM] = {
++		.mode = &drm_mode_576i,
++		.config0 = VEC_CONFIG0_SECAM_STD,
++		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
++		.custom_freq = 0x29c71c72,
++	},
+ };
+ 
+ static enum drm_connector_status
+@@ -499,8 +558,12 @@ static const struct of_device_id vc4_vec
+ static const char * const tv_mode_names[] = {
+ 	[VC4_VEC_TV_MODE_NTSC] = "NTSC",
+ 	[VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J",
++	[VC4_VEC_TV_MODE_NTSC_443] = "NTSC-443",
+ 	[VC4_VEC_TV_MODE_PAL] = "PAL",
+ 	[VC4_VEC_TV_MODE_PAL_M] = "PAL-M",
++	[VC4_VEC_TV_MODE_PAL_N] = "PAL-N",
++	[VC4_VEC_TV_MODE_PAL60] = "PAL60",
++	[VC4_VEC_TV_MODE_SECAM] = "SECAM",
+ };
+ 
+ static int vc4_vec_bind(struct device *dev, struct device *master, void *data)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0450-drm-vc4-Allow-setting-the-TV-norm-via-module-paramet.patch b/target/linux/bcm27xx/patches-5.15/950-0450-drm-vc4-Allow-setting-the-TV-norm-via-module-paramet.patch
new file mode 100644
index 0000000000..22e6a99bce
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0450-drm-vc4-Allow-setting-the-TV-norm-via-module-paramet.patch
@@ -0,0 +1,144 @@
+From 9835bb0108ea7e895f4c35f6295dce243e58d13f Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:08:01 +0200
+Subject: [PATCH] drm/vc4: Allow setting the TV norm via module
+ parameter
+
+Similar to the ch7006 and nouveau drivers, introduce a "tv_mode" module
+parameter that allow setting the TV norm by specifying vc4.tv_norm= on
+the kernel command line.
+
+If that is not specified, try inferring one of the most popular norms
+(PAL or NTSC) from the video mode specified on the command line. On
+Raspberry Pis, this causes the most common cases of the sdtv_mode
+setting in config.txt to be respected.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_vec.c | 72 ++++++++++++++++++++++++++++-------
+ 1 file changed, 58 insertions(+), 14 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -66,7 +66,7 @@
+ #define VEC_CONFIG0_YCDELAY		BIT(4)
+ #define VEC_CONFIG0_RAMPEN		BIT(2)
+ #define VEC_CONFIG0_YCDIS		BIT(2)
+-#define VEC_CONFIG0_STD_MASK		GENMASK(1, 0)
++#define VEC_CONFIG0_STD_MASK		(VEC_CONFIG0_SECAM_STD | GENMASK(1, 0))
+ #define VEC_CONFIG0_NTSC_STD		0
+ #define VEC_CONFIG0_PAL_BDGHI_STD	1
+ #define VEC_CONFIG0_PAL_M_STD		2
+@@ -185,6 +185,8 @@
+ #define VEC_DAC_MISC_DAC_RST_N		BIT(0)
+ 
+ 
++static char *vc4_vec_tv_norm;
++
+ struct vc4_vec_variant {
+ 	u32 dac_config;
+ };
+@@ -338,6 +340,44 @@ static const struct vc4_vec_tv_mode vc4_
+ 	},
+ };
+ 
++static const char * const tv_mode_names[] = {
++	[VC4_VEC_TV_MODE_NTSC] = "NTSC",
++	[VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J",
++	[VC4_VEC_TV_MODE_NTSC_443] = "NTSC-443",
++	[VC4_VEC_TV_MODE_PAL] = "PAL",
++	[VC4_VEC_TV_MODE_PAL_M] = "PAL-M",
++	[VC4_VEC_TV_MODE_PAL_N] = "PAL-N",
++	[VC4_VEC_TV_MODE_PAL60] = "PAL60",
++	[VC4_VEC_TV_MODE_SECAM] = "SECAM",
++};
++
++enum vc4_vec_tv_mode_id
++vc4_vec_get_default_mode(struct drm_connector *connector)
++{
++	int i;
++
++	if (vc4_vec_tv_norm) {
++		for (i = 0; i < ARRAY_SIZE(tv_mode_names); i++)
++			if (strcmp(vc4_vec_tv_norm, tv_mode_names[i]) == 0)
++				return (enum vc4_vec_tv_mode_id) i;
++	} else if (connector->cmdline_mode.specified &&
++		   ((connector->cmdline_mode.refresh_specified &&
++		     (connector->cmdline_mode.refresh == 25 ||
++		      connector->cmdline_mode.refresh == 50)) ||
++		    (!connector->cmdline_mode.refresh_specified &&
++		     (connector->cmdline_mode.yres == 288 ||
++		      connector->cmdline_mode.yres == 576)))) {
++		/*
++		 * no explicitly specified TV norm; use PAL if a mode that
++		 * looks like PAL has been specified on the command line
++		 */
++		return VC4_VEC_TV_MODE_PAL;
++	}
++
++	/* in all other cases, default to NTSC */
++	return VC4_VEC_TV_MODE_NTSC;
++}
++
+ static enum drm_connector_status
+ vc4_vec_connector_detect(struct drm_connector *connector, bool force)
+ {
+@@ -367,11 +407,19 @@ static int vc4_vec_connector_get_modes(s
+ 	return 1;
+ }
+ 
++static void vc4_vec_connector_reset(struct drm_connector *connector)
++{
++	drm_atomic_helper_connector_reset(connector);
++	/* preserve TV standard */
++	if (connector->state)
++		connector->state->tv.mode = vc4_vec_get_default_mode(connector);
++}
++
+ static const struct drm_connector_funcs vc4_vec_connector_funcs = {
+ 	.detect = vc4_vec_connector_detect,
+ 	.fill_modes = drm_helper_probe_single_connector_modes,
+ 	.destroy = vc4_vec_connector_destroy,
+-	.reset = drm_atomic_helper_connector_reset,
++	.reset = vc4_vec_connector_reset,
+ 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+ };
+@@ -403,7 +451,7 @@ static struct drm_connector *vc4_vec_con
+ 
+ 	drm_object_attach_property(&connector->base,
+ 				   dev->mode_config.tv_mode_property,
+-				   VC4_VEC_TV_MODE_NTSC);
++				   vc4_vec_get_default_mode(connector));
+ 
+ 	drm_connector_attach_encoder(connector, vec->encoder);
+ 
+@@ -555,17 +603,6 @@ static const struct of_device_id vc4_vec
+ 	{ /* sentinel */ },
+ };
+ 
+-static const char * const tv_mode_names[] = {
+-	[VC4_VEC_TV_MODE_NTSC] = "NTSC",
+-	[VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J",
+-	[VC4_VEC_TV_MODE_NTSC_443] = "NTSC-443",
+-	[VC4_VEC_TV_MODE_PAL] = "PAL",
+-	[VC4_VEC_TV_MODE_PAL_M] = "PAL-M",
+-	[VC4_VEC_TV_MODE_PAL_N] = "PAL-N",
+-	[VC4_VEC_TV_MODE_PAL60] = "PAL60",
+-	[VC4_VEC_TV_MODE_SECAM] = "SECAM",
+-};
+-
+ static int vc4_vec_bind(struct device *dev, struct device *master, void *data)
+ {
+ 	struct platform_device *pdev = to_platform_device(dev);
+@@ -674,3 +711,10 @@ struct platform_driver vc4_vec_driver =
+ 		.of_match_table = vc4_vec_dt_match,
+ 	},
+ };
++
++module_param_named(tv_norm, vc4_vec_tv_norm, charp, 0600);
++MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
++		 "\t\tSupported: NTSC, NTSC-J, NTSC-443, PAL, PAL-M, PAL-N,\n"
++		 "\t\t\tPAL60, SECAM.\n"
++		 "\t\tDefault: PAL if a 50 Hz mode has been set via video=,\n"
++		 "\t\t\tNTSC otherwise");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0451-drm-vc4-Refactor-mode-checking-logic.patch b/target/linux/bcm27xx/patches-5.15/950-0451-drm-vc4-Refactor-mode-checking-logic.patch
new file mode 100644
index 0000000000..b41d088ad1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0451-drm-vc4-Refactor-mode-checking-logic.patch
@@ -0,0 +1,85 @@
+From cf8fe4bd58be368fc600fab4ea5aed2dd5dba138 Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:08:05 +0200
+Subject: [PATCH] drm/vc4: Refactor mode checking logic
+
+Replace drm_encoder_helper_funcs::atomic_check with
+drm_connector_helper_funcs::atomic_check - the former is not called
+during drm_mode_obj_set_property_ioctl(). Set crtc_state->mode_changed
+if TV norm changes even without explicit mode change. This makes things
+like "xrandr --output Composite-1 --set mode PAL-M" work properly.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_vec.c | 42 ++++++++++++++++++++++-------------
+ 1 file changed, 26 insertions(+), 16 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -415,6 +415,31 @@ static void vc4_vec_connector_reset(stru
+ 		connector->state->tv.mode = vc4_vec_get_default_mode(connector);
+ }
+ 
++static int vc4_vec_connector_atomic_check(struct drm_connector *conn,
++					  struct drm_atomic_state *state)
++{
++	struct drm_connector_state *old_state =
++		drm_atomic_get_old_connector_state(state, conn);
++	struct drm_connector_state *new_state =
++		drm_atomic_get_new_connector_state(state, conn);
++
++	const struct vc4_vec_tv_mode *vec_mode =
++		&vc4_vec_tv_modes[new_state->tv.mode];
++
++	if (new_state->crtc) {
++		struct drm_crtc_state *crtc_state =
++			drm_atomic_get_new_crtc_state(state, new_state->crtc);
++
++		if (!drm_mode_equal(vec_mode->mode, &crtc_state->mode))
++			return -EINVAL;
++
++		if (old_state->tv.mode != new_state->tv.mode)
++			crtc_state->mode_changed = true;
++	}
++
++	return 0;
++}
++
+ static const struct drm_connector_funcs vc4_vec_connector_funcs = {
+ 	.detect = vc4_vec_connector_detect,
+ 	.fill_modes = drm_helper_probe_single_connector_modes,
+@@ -426,6 +451,7 @@ static const struct drm_connector_funcs
+ 
+ static const struct drm_connector_helper_funcs vc4_vec_connector_helper_funcs = {
+ 	.get_modes = vc4_vec_connector_get_modes,
++	.atomic_check = vc4_vec_connector_atomic_check,
+ };
+ 
+ static struct drm_connector *vc4_vec_connector_init(struct drm_device *dev,
+@@ -563,26 +589,10 @@ static bool vc4_vec_encoder_mode_fixup(s
+ 	return true;
+ }
+ 
+-static int vc4_vec_encoder_atomic_check(struct drm_encoder *encoder,
+-					struct drm_crtc_state *crtc_state,
+-					struct drm_connector_state *conn_state)
+-{
+-	const struct vc4_vec_tv_mode *vec_mode;
+-
+-	vec_mode = &vc4_vec_tv_modes[conn_state->tv.mode];
+-
+-	if (conn_state->crtc &&
+-	    !drm_mode_equal(vec_mode->mode, &crtc_state->adjusted_mode))
+-		return -EINVAL;
+-
+-	return 0;
+-}
+-
+ static const struct drm_encoder_helper_funcs vc4_vec_encoder_helper_funcs = {
+ 	.disable = vc4_vec_encoder_disable,
+ 	.enable = vc4_vec_encoder_enable,
+ 	.mode_fixup = vc4_vec_encoder_mode_fixup,
+-	.atomic_check = vc4_vec_encoder_atomic_check,
+ };
+ 
+ static const struct vc4_vec_variant bcm2835_vec_variant = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0452-drm-vc4-Add-firmware-kms-mode.patch b/target/linux/bcm27xx/patches-5.15/950-0452-drm-vc4-Add-firmware-kms-mode.patch
new file mode 100644
index 0000000000..d2d7cfb4e9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0452-drm-vc4-Add-firmware-kms-mode.patch
@@ -0,0 +1,2498 @@
+From 0396d0bd56a5c2941c02f858599de3b0cbc93c75 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 7 Sep 2020 17:32:27 +0100
+Subject: [PATCH] drm/vc4: Add firmware-kms mode
+
+This is a squash of all firmware-kms related patches from previous
+branches, up to and including
+"drm/vc4: Set the possible crtcs mask correctly for planes with FKMS"
+plus a couple of minor fixups for the 5.9 branch.
+Please refer to earlier branches for full history.
+
+This patch includes work by Eric Anholt, James Hughes, Phil Elwell,
+Dave Stevenson, Dom Cobley, and Jonathon Bell.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+drm/vc4: Fixup firmware-kms after "drm/atomic: Pass the full state to CRTC atomic enable/disable"
+
+Prototype for those calls changed, so amend fkms (which isn't
+upstream) to match.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+drm/vc4: Fixup fkms for API change
+
+Atomic flush and check changed API, so fix up the downstream-only
+FKMS driver.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+drm/vc4: Make normalize_zpos conditional on using fkms
+
+Eric's view was that there was no point in having zpos
+support on vc4 as all the planes had the same functionality.
+
+Can be later squashed into (and fixes):
+drm/vc4: Add firmware-kms mode
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+
+drm/vc4: FKMS: Change of Broadcast RGB mode needs a mode change
+
+The Broadcast RGB (aka HDMI limited/full range) property is only
+notified to the firmware on mode change, so this needs to be
+signalled when set.
+
+https://github.com/raspberrypi/firmware/issues/1580
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+vc4/drv: Only notify firmware of display done with kms
+
+fkms driver still wants firmware display to be active
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+
+ydrm/vc4: fkms: Fix margin calculations for the right/bottom edges
+
+The calculations clipped the right/bottom edge of the clipped
+range based on the left/top margins.
+
+https://github.com/raspberrypi/linux/issues/4447
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+drm/vc4: fkms: Use new devm_rpi_firmware_get api
+
+drm/kms: Add allow_fb_modifiers
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/Makefile               |    1 +
+ drivers/gpu/drm/vc4/vc4_debugfs.c          |    2 +-
+ drivers/gpu/drm/vc4/vc4_drv.c              |   29 +-
+ drivers/gpu/drm/vc4/vc4_drv.h              |    7 +
+ drivers/gpu/drm/vc4/vc4_firmware_kms.c     | 1994 ++++++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_kms.c              |   35 +-
+ drivers/gpu/drm/vc4/vc_image_types.h       |  175 ++
+ include/soc/bcm2835/raspberrypi-firmware.h |    6 +
+ 8 files changed, 2235 insertions(+), 14 deletions(-)
+ create mode 100644 drivers/gpu/drm/vc4/vc4_firmware_kms.c
+ create mode 100644 drivers/gpu/drm/vc4/vc_image_types.h
+
+--- a/drivers/gpu/drm/vc4/Makefile
++++ b/drivers/gpu/drm/vc4/Makefile
+@@ -9,6 +9,7 @@ vc4-y := \
+ 	vc4_dpi.o \
+ 	vc4_dsi.o \
+ 	vc4_fence.o \
++	vc4_firmware_kms.o \
+ 	vc4_kms.o \
+ 	vc4_gem.o \
+ 	vc4_hdmi.o \
+--- a/drivers/gpu/drm/vc4/vc4_debugfs.c
++++ b/drivers/gpu/drm/vc4/vc4_debugfs.c
+@@ -27,7 +27,7 @@ vc4_debugfs_init(struct drm_minor *minor
+ 	struct vc4_dev *vc4 = to_vc4_dev(minor->dev);
+ 	struct vc4_debugfs_info_entry *entry;
+ 
+-	if (!of_device_is_compatible(vc4->hvs->pdev->dev.of_node,
++	if (vc4->hvs && !of_device_is_compatible(vc4->hvs->pdev->dev.of_node,
+ 				     "brcm,bcm2711-vc5"))
+ 		debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
+ 				    minor->debugfs_root, &vc4->load_tracker_enabled);
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -226,6 +226,18 @@ const struct of_device_id vc4_dma_range_
+ 	{}
+ };
+ 
++/*
++ * we need this helper function for determining presence of fkms
++ * before it's been bound
++ */
++static bool firmware_kms(void)
++{
++	return of_device_is_available(of_find_compatible_node(NULL, NULL,
++	       "raspberrypi,rpi-firmware-kms")) ||
++	       of_device_is_available(of_find_compatible_node(NULL, NULL,
++	       "raspberrypi,rpi-firmware-kms-2711"));
++}
++
+ static int vc4_drm_bind(struct device *dev)
+ {
+ 	struct platform_device *pdev = to_platform_device(dev);
+@@ -289,7 +301,7 @@ static int vc4_drm_bind(struct device *d
+ 	if (ret)
+ 		return ret;
+ 
+-	if (firmware) {
++	if (firmware && !firmware_kms()) {
+ 		ret = rpi_firmware_property(firmware,
+ 					    RPI_FIRMWARE_NOTIFY_DISPLAY_DONE,
+ 					    NULL, 0);
+@@ -303,16 +315,20 @@ static int vc4_drm_bind(struct device *d
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = vc4_plane_create_additional_planes(drm);
+-	if (ret)
+-		goto unbind_all;
++	if (!vc4->firmware_kms) {
++		ret = vc4_plane_create_additional_planes(drm);
++		if (ret)
++			goto unbind_all;
++	}
+ 
+ 	ret = vc4_kms_load(drm);
+ 	if (ret < 0)
+ 		goto unbind_all;
+ 
+-	drm_for_each_crtc(crtc, drm)
+-		vc4_crtc_disable_at_boot(crtc);
++	if (!vc4->firmware_kms) {
++		drm_for_each_crtc(crtc, drm)
++			vc4_crtc_disable_at_boot(crtc);
++	}
+ 
+ 	ret = drm_dev_register(drm, 0);
+ 	if (ret < 0)
+@@ -359,6 +375,7 @@ static struct platform_driver *const com
+ 	&vc4_dsi_driver,
+ 	&vc4_txp_driver,
+ 	&vc4_crtc_driver,
++	&vc4_firmware_kms_driver,
+ 	&vc4_v3d_driver,
+ };
+ 
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -76,11 +76,15 @@ struct vc4_dev {
+ 
+ 	unsigned int irq;
+ 
++	bool firmware_kms;
++	struct rpi_firmware *firmware;
++
+ 	struct vc4_hvs *hvs;
+ 	struct vc4_v3d *v3d;
+ 	struct vc4_dpi *dpi;
+ 	struct vc4_vec *vec;
+ 	struct vc4_txp *txp;
++	struct vc4_fkms *fkms;
+ 
+ 	struct vc4_hang_state *hang_state;
+ 
+@@ -896,6 +900,9 @@ extern struct platform_driver vc4_dsi_dr
+ /* vc4_fence.c */
+ extern const struct dma_fence_ops vc4_fence_ops;
+ 
++/* vc4_firmware_kms.c */
++extern struct platform_driver vc4_firmware_kms_driver;
++
+ /* vc4_gem.c */
+ int vc4_gem_init(struct drm_device *dev);
+ int vc4_submit_cl_ioctl(struct drm_device *dev, void *data,
+--- /dev/null
++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
+@@ -0,0 +1,1994 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * Copyright (C) 2016 Broadcom
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/**
++ * DOC: VC4 firmware KMS module.
++ *
++ * As a hack to get us from the current closed source driver world
++ * toward a totally open stack, implement KMS on top of the Raspberry
++ * Pi's firmware display stack.
++ */
++
++#include <drm/drm_atomic_helper.h>
++#include <drm/drm_crtc_helper.h>
++#include <drm/drm_drv.h>
++#include <drm/drm_fb_cma_helper.h>
++#include <drm/drm_fourcc.h>
++#include <drm/drm_gem_atomic_helper.h>
++#include <drm/drm_plane_helper.h>
++#include <drm/drm_probe_helper.h>
++#include <drm/drm_vblank.h>
++
++#include <linux/component.h>
++#include <linux/clk.h>
++#include <linux/debugfs.h>
++#include <linux/module.h>
++
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++#include "vc4_drv.h"
++#include "vc4_regs.h"
++#include "vc_image_types.h"
++
++int fkms_max_refresh_rate = 85;
++module_param(fkms_max_refresh_rate, int, 0644);
++MODULE_PARM_DESC(fkms_max_refresh_rate, "Max supported refresh rate");
++
++struct get_display_cfg {
++	u32  max_pixel_clock[2];  //Max pixel clock for each display
++};
++
++struct vc4_fkms {
++	struct get_display_cfg cfg;
++	bool bcm2711;
++};
++
++#define PLANES_PER_CRTC		8
++
++struct set_plane {
++	u8 display;
++	u8 plane_id;
++	u8 vc_image_type;
++	s8 layer;
++
++	u16 width;
++	u16 height;
++
++	u16 pitch;
++	u16 vpitch;
++
++	u32 src_x;	/* 16p16 */
++	u32 src_y;	/* 16p16 */
++
++	u32 src_w;	/* 16p16 */
++	u32 src_h;	/* 16p16 */
++
++	s16 dst_x;
++	s16 dst_y;
++
++	u16 dst_w;
++	u16 dst_h;
++
++	u8 alpha;
++	u8 num_planes;
++	u8 is_vu;
++	u8 color_encoding;
++
++	u32 planes[4];  /* DMA address of each plane */
++
++	u32 transform;
++};
++
++/* Values for the transform field */
++#define TRANSFORM_NO_ROTATE	0
++#define TRANSFORM_ROTATE_180	BIT(1)
++#define TRANSFORM_FLIP_HRIZ	BIT(16)
++#define TRANSFORM_FLIP_VERT	BIT(17)
++
++struct mailbox_set_plane {
++	struct rpi_firmware_property_tag_header tag;
++	struct set_plane plane;
++};
++
++struct mailbox_blank_display {
++	struct rpi_firmware_property_tag_header tag1;
++	u32 display;
++	struct rpi_firmware_property_tag_header tag2;
++	u32 blank;
++};
++
++struct mailbox_display_pwr {
++	struct rpi_firmware_property_tag_header tag1;
++	u32 display;
++	u32 state;
++};
++
++struct mailbox_get_edid {
++	struct rpi_firmware_property_tag_header tag1;
++	u32 block;
++	u32 display_number;
++	u8 edid[128];
++};
++
++struct set_timings {
++	u8 display;
++	u8 padding;
++	u16 video_id_code;
++
++	u32 clock;		/* in kHz */
++
++	u16 hdisplay;
++	u16 hsync_start;
++
++	u16 hsync_end;
++	u16 htotal;
++
++	u16 hskew;
++	u16 vdisplay;
++
++	u16 vsync_start;
++	u16 vsync_end;
++
++	u16 vtotal;
++	u16 vscan;
++
++	u16 vrefresh;
++	u16 padding2;
++
++	u32 flags;
++#define  TIMINGS_FLAGS_H_SYNC_POS	BIT(0)
++#define  TIMINGS_FLAGS_H_SYNC_NEG	0
++#define  TIMINGS_FLAGS_V_SYNC_POS	BIT(1)
++#define  TIMINGS_FLAGS_V_SYNC_NEG	0
++#define  TIMINGS_FLAGS_INTERLACE	BIT(2)
++
++#define TIMINGS_FLAGS_ASPECT_MASK	GENMASK(7, 4)
++#define TIMINGS_FLAGS_ASPECT_NONE	(0 << 4)
++#define TIMINGS_FLAGS_ASPECT_4_3	(1 << 4)
++#define TIMINGS_FLAGS_ASPECT_16_9	(2 << 4)
++#define TIMINGS_FLAGS_ASPECT_64_27	(3 << 4)
++#define TIMINGS_FLAGS_ASPECT_256_135	(4 << 4)
++
++/* Limited range RGB flag. Not set corresponds to full range. */
++#define TIMINGS_FLAGS_RGB_LIMITED	BIT(8)
++/* DVI monitor, therefore disable infoframes. Not set corresponds to HDMI. */
++#define TIMINGS_FLAGS_DVI		BIT(9)
++/* Double clock */
++#define TIMINGS_FLAGS_DBL_CLK		BIT(10)
++};
++
++struct mailbox_set_mode {
++	struct rpi_firmware_property_tag_header tag1;
++	struct set_timings timings;
++};
++
++static const struct vc_image_format {
++	u32 drm;	/* DRM_FORMAT_* */
++	u32 vc_image;	/* VC_IMAGE_* */
++	u32 is_vu;
++} vc_image_formats[] = {
++	{
++		.drm = DRM_FORMAT_XRGB8888,
++		.vc_image = VC_IMAGE_XRGB8888,
++	},
++	{
++		.drm = DRM_FORMAT_ARGB8888,
++		.vc_image = VC_IMAGE_ARGB8888,
++	},
++/*
++ *	FIXME: Need to resolve which DRM format goes to which vc_image format
++ *	for the remaining RGBA and RGBX formats.
++ *	{
++ *		.drm = DRM_FORMAT_ABGR8888,
++ *		.vc_image = VC_IMAGE_RGBA8888,
++ *	},
++ *	{
++ *		.drm = DRM_FORMAT_XBGR8888,
++ *		.vc_image = VC_IMAGE_RGBA8888,
++ *	},
++ */
++	{
++		.drm = DRM_FORMAT_RGB565,
++		.vc_image = VC_IMAGE_RGB565,
++	},
++	{
++		.drm = DRM_FORMAT_RGB888,
++		.vc_image = VC_IMAGE_BGR888,
++	},
++	{
++		.drm = DRM_FORMAT_BGR888,
++		.vc_image = VC_IMAGE_RGB888,
++	},
++	{
++		.drm = DRM_FORMAT_YUV422,
++		.vc_image = VC_IMAGE_YUV422PLANAR,
++	},
++	{
++		.drm = DRM_FORMAT_YUV420,
++		.vc_image = VC_IMAGE_YUV420,
++	},
++	{
++		.drm = DRM_FORMAT_YVU420,
++		.vc_image = VC_IMAGE_YUV420,
++		.is_vu = 1,
++	},
++	{
++		.drm = DRM_FORMAT_NV12,
++		.vc_image = VC_IMAGE_YUV420SP,
++	},
++	{
++		.drm = DRM_FORMAT_NV21,
++		.vc_image = VC_IMAGE_YUV420SP,
++		.is_vu = 1,
++	},
++	{
++		.drm = DRM_FORMAT_P030,
++		.vc_image = VC_IMAGE_YUV10COL,
++	},
++};
++
++static const struct vc_image_format *vc4_get_vc_image_fmt(u32 drm_format)
++{
++	unsigned int i;
++
++	for (i = 0; i < ARRAY_SIZE(vc_image_formats); i++) {
++		if (vc_image_formats[i].drm == drm_format)
++			return &vc_image_formats[i];
++	}
++
++	return NULL;
++}
++
++/* The firmware delivers a vblank interrupt to us through the SMI
++ * hardware, which has only this one register.
++ */
++#define SMICS 0x0
++#define SMIDSW0 0x14
++#define SMIDSW1 0x1C
++#define SMICS_INTERRUPTS (BIT(9) | BIT(10) | BIT(11))
++
++/* Flag to denote that the firmware is giving multiple display callbacks */
++#define SMI_NEW 0xabcd0000
++
++#define vc4_crtc vc4_kms_crtc
++#define to_vc4_crtc to_vc4_kms_crtc
++struct vc4_crtc {
++	struct drm_crtc base;
++	struct drm_encoder *encoder;
++	struct drm_connector *connector;
++	void __iomem *regs;
++
++	struct drm_pending_vblank_event *event;
++	bool vblank_enabled;
++	u32 display_number;
++	u32 display_type;
++};
++
++static inline struct vc4_crtc *to_vc4_crtc(struct drm_crtc *crtc)
++{
++	return container_of(crtc, struct vc4_crtc, base);
++}
++
++struct vc4_fkms_encoder {
++	struct drm_encoder base;
++	bool hdmi_monitor;
++	bool rgb_range_selectable;
++	int display_num;
++};
++
++static inline struct vc4_fkms_encoder *
++to_vc4_fkms_encoder(struct drm_encoder *encoder)
++{
++	return container_of(encoder, struct vc4_fkms_encoder, base);
++}
++
++/* "Broadcast RGB" property.
++ * Allows overriding of HDMI full or limited range RGB
++ */
++#define VC4_BROADCAST_RGB_AUTO 0
++#define VC4_BROADCAST_RGB_FULL 1
++#define VC4_BROADCAST_RGB_LIMITED 2
++
++/* VC4 FKMS connector KMS struct */
++struct vc4_fkms_connector {
++	struct drm_connector base;
++
++	/* Since the connector is attached to just the one encoder,
++	 * this is the reference to it so we can do the best_encoder()
++	 * hook.
++	 */
++	struct drm_encoder *encoder;
++	struct vc4_dev *vc4_dev;
++	u32 display_number;
++	u32 display_type;
++
++	struct drm_property *broadcast_rgb_property;
++};
++
++static inline struct vc4_fkms_connector *
++to_vc4_fkms_connector(struct drm_connector *connector)
++{
++	return container_of(connector, struct vc4_fkms_connector, base);
++}
++
++/* VC4 FKMS connector state */
++struct vc4_fkms_connector_state {
++	struct drm_connector_state base;
++
++	int broadcast_rgb;
++};
++
++#define to_vc4_fkms_connector_state(x) \
++			container_of(x, struct vc4_fkms_connector_state, base)
++
++static u32 vc4_get_display_type(u32 display_number)
++{
++	const u32 display_types[] = {
++		/* The firmware display (DispmanX) IDs map to specific types in
++		 * a fixed manner.
++		 */
++		DRM_MODE_ENCODER_DSI,	/* MAIN_LCD - DSI or DPI */
++		DRM_MODE_ENCODER_DSI,	/* AUX_LCD */
++		DRM_MODE_ENCODER_TMDS,	/* HDMI0 */
++		DRM_MODE_ENCODER_TVDAC,	/* VEC */
++		DRM_MODE_ENCODER_NONE,	/* FORCE_LCD */
++		DRM_MODE_ENCODER_NONE,	/* FORCE_TV */
++		DRM_MODE_ENCODER_NONE,	/* FORCE_OTHER */
++		DRM_MODE_ENCODER_TMDS,	/* HDMI1 */
++		DRM_MODE_ENCODER_NONE,	/* FORCE_TV2 */
++	};
++	return display_number > ARRAY_SIZE(display_types) - 1 ?
++			DRM_MODE_ENCODER_NONE : display_types[display_number];
++}
++
++/* Firmware's structure for making an FB mbox call. */
++struct fbinfo_s {
++	u32 xres, yres, xres_virtual, yres_virtual;
++	u32 pitch, bpp;
++	u32 xoffset, yoffset;
++	u32 base;
++	u32 screen_size;
++	u16 cmap[256];
++};
++
++struct vc4_fkms_plane {
++	struct drm_plane base;
++	struct fbinfo_s *fbinfo;
++	dma_addr_t fbinfo_bus_addr;
++	u32 pitch;
++	struct mailbox_set_plane mb;
++};
++
++static inline struct vc4_fkms_plane *to_vc4_fkms_plane(struct drm_plane *plane)
++{
++	return (struct vc4_fkms_plane *)plane;
++}
++
++static int vc4_plane_set_blank(struct drm_plane *plane, bool blank)
++{
++	struct vc4_dev *vc4 = to_vc4_dev(plane->dev);
++	struct vc4_fkms_plane *vc4_plane = to_vc4_fkms_plane(plane);
++	struct mailbox_set_plane blank_mb = {
++		.tag = { RPI_FIRMWARE_SET_PLANE, sizeof(struct set_plane), 0 },
++		.plane = {
++			.display = vc4_plane->mb.plane.display,
++			.plane_id = vc4_plane->mb.plane.plane_id,
++		}
++	};
++	static const char * const plane_types[] = {
++							"overlay",
++							"primary",
++							"cursor"
++						  };
++	int ret;
++
++	DRM_DEBUG_ATOMIC("[PLANE:%d:%s] %s plane %s",
++			 plane->base.id, plane->name, plane_types[plane->type],
++			 blank ? "blank" : "unblank");
++
++	if (blank)
++		ret = rpi_firmware_property_list(vc4->firmware, &blank_mb,
++						 sizeof(blank_mb));
++	else
++		ret = rpi_firmware_property_list(vc4->firmware, &vc4_plane->mb,
++						 sizeof(vc4_plane->mb));
++
++	WARN_ONCE(ret, "%s: firmware call failed. Please update your firmware",
++		  __func__);
++	return ret;
++}
++
++static void vc4_fkms_crtc_get_margins(struct drm_crtc_state *state,
++				      unsigned int *left, unsigned int *right,
++				      unsigned int *top, unsigned int *bottom)
++{
++	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(state);
++	struct drm_connector_state *conn_state;
++	struct drm_connector *conn;
++	int i;
++
++	*left = vc4_state->margins.left;
++	*right = vc4_state->margins.right;
++	*top = vc4_state->margins.top;
++	*bottom = vc4_state->margins.bottom;
++
++	/* We have to interate over all new connector states because
++	 * vc4_fkms_crtc_get_margins() might be called before
++	 * vc4_fkms_crtc_atomic_check() which means margins info in
++	 * vc4_crtc_state might be outdated.
++	 */
++	for_each_new_connector_in_state(state->state, conn, conn_state, i) {
++		if (conn_state->crtc != state->crtc)
++			continue;
++
++		*left = conn_state->tv.margins.left;
++		*right = conn_state->tv.margins.right;
++		*top = conn_state->tv.margins.top;
++		*bottom = conn_state->tv.margins.bottom;
++		break;
++	}
++}
++
++static int vc4_fkms_margins_adj(struct drm_plane_state *pstate,
++				struct set_plane *plane)
++{
++	unsigned int left, right, top, bottom;
++	int adjhdisplay, adjvdisplay;
++	struct drm_crtc_state *crtc_state;
++
++	crtc_state = drm_atomic_get_new_crtc_state(pstate->state,
++						   pstate->crtc);
++
++	vc4_fkms_crtc_get_margins(crtc_state, &left, &right, &top, &bottom);
++
++	if (!left && !right && !top && !bottom)
++		return 0;
++
++	if (left + right >= crtc_state->mode.hdisplay ||
++	    top + bottom >= crtc_state->mode.vdisplay)
++		return -EINVAL;
++
++	adjhdisplay = crtc_state->mode.hdisplay - (left + right);
++	plane->dst_x = DIV_ROUND_CLOSEST(plane->dst_x * adjhdisplay,
++					 (int)crtc_state->mode.hdisplay);
++	plane->dst_x += left;
++	if (plane->dst_x > (int)(crtc_state->mode.hdisplay - right))
++		plane->dst_x = crtc_state->mode.hdisplay - right;
++
++	adjvdisplay = crtc_state->mode.vdisplay - (top + bottom);
++	plane->dst_y = DIV_ROUND_CLOSEST(plane->dst_y * adjvdisplay,
++					 (int)crtc_state->mode.vdisplay);
++	plane->dst_y += top;
++	if (plane->dst_y > (int)(crtc_state->mode.vdisplay - bottom))
++		plane->dst_y = crtc_state->mode.vdisplay - bottom;
++
++	plane->dst_w = DIV_ROUND_CLOSEST(plane->dst_w * adjhdisplay,
++					 crtc_state->mode.hdisplay);
++	plane->dst_h = DIV_ROUND_CLOSEST(plane->dst_h * adjvdisplay,
++					 crtc_state->mode.vdisplay);
++
++	if (!plane->dst_w || !plane->dst_h)
++		return -EINVAL;
++
++	return 0;
++}
++
++static void vc4_plane_atomic_update(struct drm_plane *plane,
++				    struct drm_atomic_state *old_state)
++{
++	struct drm_plane_state *state = plane->state;
++
++	/*
++	 * Do NOT set now, as we haven't checked if the crtc is active or not.
++	 * Set from vc4_plane_set_blank instead.
++	 *
++	 * If the CRTC is on (or going to be on) and we're enabled,
++	 * then unblank.  Otherwise, stay blank until CRTC enable.
++	 */
++	if (state->crtc->state->active)
++		vc4_plane_set_blank(plane, false);
++}
++
++static void vc4_plane_atomic_disable(struct drm_plane *plane,
++				     struct drm_atomic_state *old_state)
++{
++	struct drm_plane_state *state = plane->state;
++	struct vc4_fkms_plane *vc4_plane = to_vc4_fkms_plane(plane);
++
++	DRM_DEBUG_ATOMIC("[PLANE:%d:%s] plane disable %dx%d@%d +%d,%d\n",
++			 plane->base.id, plane->name,
++			 state->crtc_w,
++			 state->crtc_h,
++			 vc4_plane->mb.plane.vc_image_type,
++			 state->crtc_x,
++			 state->crtc_y);
++	vc4_plane_set_blank(plane, true);
++}
++
++static bool plane_enabled(struct drm_plane_state *state)
++{
++	return state->fb && state->crtc;
++}
++
++static int vc4_plane_to_mb(struct drm_plane *plane,
++			   struct mailbox_set_plane *mb,
++			   struct drm_plane_state *state)
++{
++	struct drm_framebuffer *fb = state->fb;
++	struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
++	const struct drm_format_info *drm_fmt = fb->format;
++	const struct vc_image_format *vc_fmt =
++					vc4_get_vc_image_fmt(drm_fmt->format);
++	int num_planes = fb->format->num_planes;
++	unsigned int rotation;
++
++	mb->plane.vc_image_type = vc_fmt->vc_image;
++	mb->plane.width = fb->width;
++	mb->plane.height = fb->height;
++	mb->plane.pitch = fb->pitches[0];
++	mb->plane.src_w = state->src_w;
++	mb->plane.src_h = state->src_h;
++	mb->plane.src_x = state->src_x;
++	mb->plane.src_y = state->src_y;
++	mb->plane.dst_w = state->crtc_w;
++	mb->plane.dst_h = state->crtc_h;
++	mb->plane.dst_x = state->crtc_x;
++	mb->plane.dst_y = state->crtc_y;
++	mb->plane.alpha = state->alpha >> 8;
++	mb->plane.layer = state->normalized_zpos ?
++					state->normalized_zpos : -127;
++	mb->plane.num_planes = num_planes;
++	mb->plane.is_vu = vc_fmt->is_vu;
++	mb->plane.planes[0] = bo->paddr + fb->offsets[0];
++
++	rotation = drm_rotation_simplify(state->rotation,
++					 DRM_MODE_ROTATE_0 |
++					 DRM_MODE_REFLECT_X |
++					 DRM_MODE_REFLECT_Y);
++
++	mb->plane.transform = TRANSFORM_NO_ROTATE;
++	if (rotation & DRM_MODE_REFLECT_X)
++		mb->plane.transform |= TRANSFORM_FLIP_HRIZ;
++	if (rotation & DRM_MODE_REFLECT_Y)
++		mb->plane.transform |= TRANSFORM_FLIP_VERT;
++
++	vc4_fkms_margins_adj(state, &mb->plane);
++
++	if (num_planes > 1) {
++		/* Assume this must be YUV */
++		/* Makes assumptions on the stride for the chroma planes as we
++		 * can't easily plumb in non-standard pitches.
++		 */
++		mb->plane.planes[1] = bo->paddr + fb->offsets[1];
++		if (num_planes > 2)
++			mb->plane.planes[2] = bo->paddr + fb->offsets[2];
++		else
++			mb->plane.planes[2] = 0;
++
++		/* Special case the YUV420 with U and V as line interleaved
++		 * planes as we have special handling for that case.
++		 */
++		if (num_planes == 3 &&
++		    (fb->offsets[2] - fb->offsets[1]) == fb->pitches[1])
++			mb->plane.vc_image_type = VC_IMAGE_YUV420_S;
++
++		switch (state->color_encoding) {
++		default:
++		case DRM_COLOR_YCBCR_BT601:
++			if (state->color_range == DRM_COLOR_YCBCR_LIMITED_RANGE)
++				mb->plane.color_encoding =
++						VC_IMAGE_YUVINFO_CSC_ITUR_BT601;
++			else
++				mb->plane.color_encoding =
++						VC_IMAGE_YUVINFO_CSC_JPEG_JFIF;
++			break;
++		case DRM_COLOR_YCBCR_BT709:
++			/* Currently no support for a full range BT709 */
++			mb->plane.color_encoding =
++						VC_IMAGE_YUVINFO_CSC_ITUR_BT709;
++			break;
++		case DRM_COLOR_YCBCR_BT2020:
++			/* Currently no support for a full range BT2020 */
++			mb->plane.color_encoding =
++					VC_IMAGE_YUVINFO_CSC_REC_2020;
++			break;
++		}
++	} else {
++		mb->plane.planes[1] = 0;
++		mb->plane.planes[2] = 0;
++	}
++	mb->plane.planes[3] = 0;
++
++	switch (fourcc_mod_broadcom_mod(fb->modifier)) {
++	case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED:
++		switch (mb->plane.vc_image_type) {
++		case VC_IMAGE_XRGB8888:
++			mb->plane.vc_image_type = VC_IMAGE_TF_RGBX32;
++			break;
++		case VC_IMAGE_ARGB8888:
++			mb->plane.vc_image_type = VC_IMAGE_TF_RGBA32;
++			break;
++		case VC_IMAGE_RGB565:
++			mb->plane.vc_image_type = VC_IMAGE_TF_RGB565;
++			break;
++		}
++		break;
++	case DRM_FORMAT_MOD_BROADCOM_SAND128:
++		switch (mb->plane.vc_image_type) {
++		case VC_IMAGE_YUV420SP:
++			mb->plane.vc_image_type = VC_IMAGE_YUV_UV;
++			break;
++		/* VC_IMAGE_YUV10COL could be included in here, but it is only
++		 * valid as a SAND128 format, so the table at the top will have
++		 * already set the correct format.
++		 */
++		}
++		/* Note that the column pitch is passed across in lines, not
++		 * bytes.
++		 */
++		mb->plane.pitch = fourcc_mod_broadcom_param(fb->modifier);
++		break;
++	}
++
++	DRM_DEBUG_ATOMIC("[PLANE:%d:%s] plane update %dx%d@%d +dst(%d,%d, %d,%d) +src(%d,%d, %d,%d) 0x%08x/%08x/%08x/%d, alpha %u zpos %u\n",
++			 plane->base.id, plane->name,
++			 mb->plane.width,
++			 mb->plane.height,
++			 mb->plane.vc_image_type,
++			 state->crtc_x,
++			 state->crtc_y,
++			 state->crtc_w,
++			 state->crtc_h,
++			 mb->plane.src_x,
++			 mb->plane.src_y,
++			 mb->plane.src_w,
++			 mb->plane.src_h,
++			 mb->plane.planes[0],
++			 mb->plane.planes[1],
++			 mb->plane.planes[2],
++			 fb->pitches[0],
++			 state->alpha,
++			 state->normalized_zpos);
++
++	return 0;
++}
++
++static int vc4_plane_atomic_check(struct drm_plane *plane,
++				  struct drm_atomic_state *state)
++{
++	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
++										 plane);
++	struct vc4_fkms_plane *vc4_plane = to_vc4_fkms_plane(plane);
++
++	if (!plane_enabled(new_plane_state))
++		return 0;
++
++	return vc4_plane_to_mb(plane, &vc4_plane->mb, new_plane_state);
++}
++
++/* Called during init to allocate the plane's atomic state. */
++static void vc4_plane_reset(struct drm_plane *plane)
++{
++	struct vc4_plane_state *vc4_state;
++
++	WARN_ON(plane->state);
++
++	vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL);
++	if (!vc4_state)
++		return;
++
++	__drm_atomic_helper_plane_reset(plane, &vc4_state->base);
++}
++
++static void vc4_plane_destroy(struct drm_plane *plane)
++{
++	drm_plane_cleanup(plane);
++}
++
++static bool vc4_fkms_format_mod_supported(struct drm_plane *plane,
++					  uint32_t format,
++					  uint64_t modifier)
++{
++	/* Support T_TILING for RGB formats only. */
++	switch (format) {
++	case DRM_FORMAT_XRGB8888:
++	case DRM_FORMAT_ARGB8888:
++	case DRM_FORMAT_RGB565:
++		switch (modifier) {
++		case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED:
++		case DRM_FORMAT_MOD_LINEAR:
++			return true;
++		default:
++			return false;
++		}
++	case DRM_FORMAT_NV12:
++		switch (fourcc_mod_broadcom_mod(modifier)) {
++		case DRM_FORMAT_MOD_LINEAR:
++		case DRM_FORMAT_MOD_BROADCOM_SAND128:
++			return true;
++		default:
++			return false;
++		}
++	case DRM_FORMAT_P030:
++		switch (fourcc_mod_broadcom_mod(modifier)) {
++		case DRM_FORMAT_MOD_BROADCOM_SAND128:
++			return true;
++		default:
++			return false;
++		}
++	case DRM_FORMAT_NV21:
++	case DRM_FORMAT_RGB888:
++	case DRM_FORMAT_BGR888:
++	case DRM_FORMAT_YUV422:
++	case DRM_FORMAT_YUV420:
++	case DRM_FORMAT_YVU420:
++	default:
++		return (modifier == DRM_FORMAT_MOD_LINEAR);
++	}
++}
++
++static struct drm_plane_state *vc4_plane_duplicate_state(struct drm_plane *plane)
++{
++	struct vc4_plane_state *vc4_state;
++
++	if (WARN_ON(!plane->state))
++		return NULL;
++
++	vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL);
++	if (!vc4_state)
++		return NULL;
++
++	__drm_atomic_helper_plane_duplicate_state(plane, &vc4_state->base);
++
++	return &vc4_state->base;
++}
++
++static const struct drm_plane_funcs vc4_plane_funcs = {
++	.update_plane = drm_atomic_helper_update_plane,
++	.disable_plane = drm_atomic_helper_disable_plane,
++	.destroy = vc4_plane_destroy,
++	.set_property = NULL,
++	.reset = vc4_plane_reset,
++	.atomic_duplicate_state = vc4_plane_duplicate_state,
++	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
++	.format_mod_supported = vc4_fkms_format_mod_supported,
++};
++
++static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = {
++	.prepare_fb = drm_gem_plane_helper_prepare_fb,
++	.cleanup_fb = NULL,
++	.atomic_check = vc4_plane_atomic_check,
++	.atomic_update = vc4_plane_atomic_update,
++	.atomic_disable = vc4_plane_atomic_disable,
++};
++
++static struct drm_plane *vc4_fkms_plane_init(struct drm_device *dev,
++					     enum drm_plane_type type,
++					     u8 display_num,
++					     u8 plane_id)
++{
++	struct drm_plane *plane = NULL;
++	struct vc4_fkms_plane *vc4_plane;
++	u32 formats[ARRAY_SIZE(vc_image_formats)];
++	unsigned int default_zpos = 0;
++	u32 num_formats = 0;
++	int ret = 0;
++	static const uint64_t modifiers[] = {
++		DRM_FORMAT_MOD_LINEAR,
++		/* VC4_T_TILED should come after linear, because we
++		 * would prefer to scan out linear (less bus traffic).
++		 */
++		DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED,
++		DRM_FORMAT_MOD_BROADCOM_SAND128,
++		DRM_FORMAT_MOD_INVALID,
++	};
++	int i;
++
++	vc4_plane = devm_kzalloc(dev->dev, sizeof(*vc4_plane),
++				 GFP_KERNEL);
++	if (!vc4_plane) {
++		ret = -ENOMEM;
++		goto fail;
++	}
++
++	for (i = 0; i < ARRAY_SIZE(vc_image_formats); i++)
++		formats[num_formats++] = vc_image_formats[i].drm;
++
++	plane = &vc4_plane->base;
++	ret = drm_universal_plane_init(dev, plane, 0,
++				       &vc4_plane_funcs,
++				       formats, num_formats, modifiers,
++				       type, NULL);
++
++	/* FIXME: Do we need to be checking return values from all these calls?
++	 */
++	drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
++
++	drm_plane_create_alpha_property(plane);
++	drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
++					   DRM_MODE_ROTATE_0 |
++					   DRM_MODE_ROTATE_180 |
++					   DRM_MODE_REFLECT_X |
++					   DRM_MODE_REFLECT_Y);
++	drm_plane_create_color_properties(plane,
++					  BIT(DRM_COLOR_YCBCR_BT601) |
++					  BIT(DRM_COLOR_YCBCR_BT709) |
++					  BIT(DRM_COLOR_YCBCR_BT2020),
++					  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
++					  BIT(DRM_COLOR_YCBCR_FULL_RANGE),
++					  DRM_COLOR_YCBCR_BT709,
++					  DRM_COLOR_YCBCR_LIMITED_RANGE);
++
++	/*
++	 * Default frame buffer setup is with FB on -127, and raspistill etc
++	 * tend to drop overlays on layer 2. Cursor plane was on layer +127.
++	 *
++	 * For F-KMS the mailbox call allows for a s8.
++	 * Remap zpos 0 to -127 for the background layer, but leave all the
++	 * other layers as requested by KMS.
++	 */
++	switch (type) {
++	default:
++	case DRM_PLANE_TYPE_PRIMARY:
++		default_zpos = 0;
++		break;
++	case DRM_PLANE_TYPE_OVERLAY:
++		default_zpos = 1;
++		break;
++	case DRM_PLANE_TYPE_CURSOR:
++		default_zpos = 2;
++		break;
++	}
++	drm_plane_create_zpos_property(plane, default_zpos, 0, 127);
++
++	/* Prepare the static elements of the mailbox structure */
++	vc4_plane->mb.tag.tag = RPI_FIRMWARE_SET_PLANE;
++	vc4_plane->mb.tag.buf_size = sizeof(struct set_plane);
++	vc4_plane->mb.tag.req_resp_size = 0;
++	vc4_plane->mb.plane.display = display_num;
++	vc4_plane->mb.plane.plane_id = plane_id;
++	vc4_plane->mb.plane.layer = default_zpos ? default_zpos : -127;
++
++	return plane;
++fail:
++	if (plane)
++		vc4_plane_destroy(plane);
++
++	return ERR_PTR(ret);
++}
++
++static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc)
++{
++	struct drm_device *dev = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++	struct drm_display_mode *mode = &crtc->state->adjusted_mode;
++	struct vc4_fkms_encoder *vc4_encoder =
++					to_vc4_fkms_encoder(vc4_crtc->encoder);
++	struct mailbox_set_mode mb = {
++		.tag1 = { RPI_FIRMWARE_SET_TIMING,
++			  sizeof(struct set_timings), 0},
++	};
++	union hdmi_infoframe frame;
++	int ret;
++
++	ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, vc4_crtc->connector, mode);
++	if (ret < 0) {
++		DRM_ERROR("couldn't fill AVI infoframe\n");
++		return;
++	}
++
++	DRM_DEBUG_KMS("Setting mode for display num %u mode name %s, clk %d, h(disp %d, start %d, end %d, total %d, skew %d) v(disp %d, start %d, end %d, total %d, scan %d), vrefresh %d, par %u, flags 0x%04x\n",
++		      vc4_crtc->display_number, mode->name, mode->clock,
++		      mode->hdisplay, mode->hsync_start, mode->hsync_end,
++		      mode->htotal, mode->hskew, mode->vdisplay,
++		      mode->vsync_start, mode->vsync_end, mode->vtotal,
++		      mode->vscan, drm_mode_vrefresh(mode),
++		      mode->picture_aspect_ratio, mode->flags);
++	mb.timings.display = vc4_crtc->display_number;
++
++	mb.timings.clock = mode->clock;
++	mb.timings.hdisplay = mode->hdisplay;
++	mb.timings.hsync_start = mode->hsync_start;
++	mb.timings.hsync_end = mode->hsync_end;
++	mb.timings.htotal = mode->htotal;
++	mb.timings.hskew = mode->hskew;
++	mb.timings.vdisplay = mode->vdisplay;
++	mb.timings.vsync_start = mode->vsync_start;
++	mb.timings.vsync_end = mode->vsync_end;
++	mb.timings.vtotal = mode->vtotal;
++	mb.timings.vscan = mode->vscan;
++	mb.timings.vrefresh = drm_mode_vrefresh(mode);
++	mb.timings.flags = 0;
++	if (mode->flags & DRM_MODE_FLAG_PHSYNC)
++		mb.timings.flags |= TIMINGS_FLAGS_H_SYNC_POS;
++	if (mode->flags & DRM_MODE_FLAG_PVSYNC)
++		mb.timings.flags |= TIMINGS_FLAGS_V_SYNC_POS;
++
++	switch (frame.avi.picture_aspect) {
++	default:
++	case HDMI_PICTURE_ASPECT_NONE:
++		mb.timings.flags |= TIMINGS_FLAGS_ASPECT_NONE;
++		break;
++	case HDMI_PICTURE_ASPECT_4_3:
++		mb.timings.flags |= TIMINGS_FLAGS_ASPECT_4_3;
++		break;
++	case HDMI_PICTURE_ASPECT_16_9:
++		mb.timings.flags |= TIMINGS_FLAGS_ASPECT_16_9;
++		break;
++	case HDMI_PICTURE_ASPECT_64_27:
++		mb.timings.flags |= TIMINGS_FLAGS_ASPECT_64_27;
++		break;
++	case HDMI_PICTURE_ASPECT_256_135:
++		mb.timings.flags |= TIMINGS_FLAGS_ASPECT_256_135;
++		break;
++	}
++
++	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
++		mb.timings.flags |= TIMINGS_FLAGS_INTERLACE;
++	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
++		mb.timings.flags |= TIMINGS_FLAGS_DBL_CLK;
++
++	mb.timings.video_id_code = frame.avi.video_code;
++
++	if (!vc4_encoder->hdmi_monitor) {
++		mb.timings.flags |= TIMINGS_FLAGS_DVI;
++	} else {
++		struct vc4_fkms_connector_state *conn_state =
++			to_vc4_fkms_connector_state(vc4_crtc->connector->state);
++
++		if (conn_state->broadcast_rgb == VC4_BROADCAST_RGB_AUTO) {
++			/* See CEA-861-E - 5.1 Default Encoding Parameters */
++			if (drm_default_rgb_quant_range(mode) ==
++					HDMI_QUANTIZATION_RANGE_LIMITED)
++				mb.timings.flags |= TIMINGS_FLAGS_RGB_LIMITED;
++		} else {
++			if (conn_state->broadcast_rgb ==
++						VC4_BROADCAST_RGB_LIMITED)
++				mb.timings.flags |= TIMINGS_FLAGS_RGB_LIMITED;
++
++			/* If not using the default range, then do not provide
++			 * a VIC as the HDMI spec requires that we do not
++			 * signal the opposite of the defined range in the AVI
++			 * infoframe.
++			 */
++			if (!!(mb.timings.flags & TIMINGS_FLAGS_RGB_LIMITED) !=
++			    (drm_default_rgb_quant_range(mode) ==
++					HDMI_QUANTIZATION_RANGE_LIMITED))
++				mb.timings.video_id_code = 0;
++		}
++	}
++
++	/*
++	 * FIXME: To implement
++	 * switch(mode->flag & DRM_MODE_FLAG_3D_MASK) {
++	 * case DRM_MODE_FLAG_3D_NONE:
++	 * case DRM_MODE_FLAG_3D_FRAME_PACKING:
++	 * case DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE:
++	 * case DRM_MODE_FLAG_3D_LINE_ALTERNATIVE:
++	 * case DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL:
++	 * case DRM_MODE_FLAG_3D_L_DEPTH:
++	 * case DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH:
++	 * case DRM_MODE_FLAG_3D_TOP_AND_BOTTOM:
++	 * case DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF:
++	 * }
++	 */
++
++	ret = rpi_firmware_property_list(vc4->firmware, &mb, sizeof(mb));
++}
++
++static void vc4_crtc_disable(struct drm_crtc *crtc,
++			     struct drm_atomic_state *state)
++{
++	struct drm_device *dev = crtc->dev;
++	struct drm_plane *plane;
++
++	DRM_DEBUG_KMS("[CRTC:%d] vblanks off.\n",
++		      crtc->base.id);
++	drm_crtc_vblank_off(crtc);
++
++	/* Always turn the planes off on CRTC disable. In DRM, planes
++	 * are enabled/disabled through the update/disable hooks
++	 * above, and the CRTC enable/disable independently controls
++	 * whether anything scans out at all, but the firmware doesn't
++	 * give us a CRTC-level control for that.
++	 */
++
++	drm_atomic_crtc_for_each_plane(plane, crtc)
++		vc4_plane_atomic_disable(plane, state);
++
++	/*
++	 * Make sure we issue a vblank event after disabling the CRTC if
++	 * someone was waiting it.
++	 */
++	if (crtc->state->event) {
++		unsigned long flags;
++
++		spin_lock_irqsave(&dev->event_lock, flags);
++		drm_crtc_send_vblank_event(crtc, crtc->state->event);
++		crtc->state->event = NULL;
++		spin_unlock_irqrestore(&dev->event_lock, flags);
++	}
++}
++
++static void vc4_crtc_consume_event(struct drm_crtc *crtc)
++{
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++	struct drm_device *dev = crtc->dev;
++	unsigned long flags;
++
++	if (!crtc->state->event)
++		return;
++
++	crtc->state->event->pipe = drm_crtc_index(crtc);
++
++	WARN_ON(drm_crtc_vblank_get(crtc) != 0);
++
++	spin_lock_irqsave(&dev->event_lock, flags);
++	vc4_crtc->event = crtc->state->event;
++	crtc->state->event = NULL;
++	spin_unlock_irqrestore(&dev->event_lock, flags);
++}
++
++static void vc4_crtc_enable(struct drm_crtc *crtc,
++			    struct drm_atomic_state *state)
++{
++	struct drm_plane *plane;
++
++	DRM_DEBUG_KMS("[CRTC:%d] vblanks on.\n",
++		      crtc->base.id);
++	drm_crtc_vblank_on(crtc);
++	vc4_crtc_consume_event(crtc);
++
++	/* Unblank the planes (if they're supposed to be displayed). */
++	drm_atomic_crtc_for_each_plane(plane, crtc)
++		if (plane->state->fb)
++			vc4_plane_set_blank(plane, plane->state->visible);
++}
++
++static enum drm_mode_status
++vc4_crtc_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode)
++{
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++	struct drm_device *dev = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_fkms *fkms = vc4->fkms;
++
++	/* Do not allow doublescan modes from user space */
++	if (mode->flags & DRM_MODE_FLAG_DBLSCAN) {
++		DRM_DEBUG_KMS("[CRTC:%d] Doublescan mode rejected.\n",
++			      crtc->base.id);
++		return MODE_NO_DBLESCAN;
++	}
++
++	/* Disable refresh rates > defined threshold (default 85Hz) as limited
++	 * gain from them
++	 */
++	if (drm_mode_vrefresh(mode) > fkms_max_refresh_rate)
++		return MODE_BAD_VVALUE;
++
++	/* Limit the pixel clock based on the HDMI clock limits from the
++	 * firmware
++	 */
++	switch (vc4_crtc->display_number) {
++	case 2:	/* HDMI0 */
++		if (fkms->cfg.max_pixel_clock[0] &&
++		    mode->clock > fkms->cfg.max_pixel_clock[0])
++			return MODE_CLOCK_HIGH;
++		break;
++	case 7:	/* HDMI1 */
++		if (fkms->cfg.max_pixel_clock[1] &&
++		    mode->clock > fkms->cfg.max_pixel_clock[1])
++			return MODE_CLOCK_HIGH;
++		break;
++	}
++
++	/* Pi4 can't generate odd horizontal timings on HDMI, so reject modes
++	 * that would set them.
++	 */
++	if (fkms->bcm2711 &&
++	    (vc4_crtc->display_number == 2 || vc4_crtc->display_number == 7) &&
++	    !(mode->flags & DRM_MODE_FLAG_DBLCLK) &&
++	    ((mode->hdisplay |				/* active */
++	      (mode->hsync_start - mode->hdisplay) |	/* front porch */
++	      (mode->hsync_end - mode->hsync_start) |	/* sync pulse */
++	      (mode->htotal - mode->hsync_end)) & 1))	/* back porch */ {
++		DRM_DEBUG_KMS("[CRTC:%d] Odd timing rejected %u %u %u %u.\n",
++			      crtc->base.id, mode->hdisplay, mode->hsync_start,
++			      mode->hsync_end, mode->htotal);
++		return MODE_H_ILLEGAL;
++	}
++
++	return MODE_OK;
++}
++
++static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
++				 struct drm_atomic_state *state)
++{
++	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
++									  crtc);
++	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state);
++	struct drm_connector *conn;
++	struct drm_connector_state *conn_state;
++	int i;
++
++	DRM_DEBUG_KMS("[CRTC:%d] crtc_atomic_check.\n", crtc->base.id);
++
++	for_each_new_connector_in_state(crtc_state->state, conn, conn_state, i) {
++		if (conn_state->crtc != crtc)
++			continue;
++
++		vc4_state->margins.left = conn_state->tv.margins.left;
++		vc4_state->margins.right = conn_state->tv.margins.right;
++		vc4_state->margins.top = conn_state->tv.margins.top;
++		vc4_state->margins.bottom = conn_state->tv.margins.bottom;
++		break;
++	}
++	return 0;
++}
++
++static void vc4_crtc_atomic_flush(struct drm_crtc *crtc,
++				  struct drm_atomic_state *state)
++{
++	struct drm_crtc_state *old_state = drm_atomic_get_old_crtc_state(state,
++									 crtc);
++
++	DRM_DEBUG_KMS("[CRTC:%d] crtc_atomic_flush.\n",
++		      crtc->base.id);
++	if (crtc->state->active && old_state->active && crtc->state->event)
++		vc4_crtc_consume_event(crtc);
++}
++
++static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc)
++{
++	struct drm_crtc *crtc = &vc4_crtc->base;
++	struct drm_device *dev = crtc->dev;
++	unsigned long flags;
++
++	spin_lock_irqsave(&dev->event_lock, flags);
++	if (vc4_crtc->event) {
++		drm_crtc_send_vblank_event(crtc, vc4_crtc->event);
++		vc4_crtc->event = NULL;
++		drm_crtc_vblank_put(crtc);
++	}
++	spin_unlock_irqrestore(&dev->event_lock, flags);
++}
++
++static irqreturn_t vc4_crtc_irq_handler(int irq, void *data)
++{
++	struct vc4_crtc **crtc_list = data;
++	int i;
++	u32 stat = readl(crtc_list[0]->regs + SMICS);
++	irqreturn_t ret = IRQ_NONE;
++	u32 chan;
++
++	if (stat & SMICS_INTERRUPTS) {
++		writel(0, crtc_list[0]->regs + SMICS);
++
++		chan = readl(crtc_list[0]->regs + SMIDSW0);
++
++		if ((chan & 0xFFFF0000) != SMI_NEW) {
++			/* Older firmware. Treat the one interrupt as vblank/
++			 * complete for all crtcs.
++			 */
++			for (i = 0; crtc_list[i]; i++) {
++				if (crtc_list[i]->vblank_enabled)
++					drm_crtc_handle_vblank(&crtc_list[i]->base);
++				vc4_crtc_handle_page_flip(crtc_list[i]);
++			}
++		} else {
++			if (chan & 1) {
++				writel(SMI_NEW, crtc_list[0]->regs + SMIDSW0);
++				if (crtc_list[0]->vblank_enabled)
++					drm_crtc_handle_vblank(&crtc_list[0]->base);
++				vc4_crtc_handle_page_flip(crtc_list[0]);
++			}
++
++			if (crtc_list[1]) {
++				/* Check for the secondary display too */
++				chan = readl(crtc_list[0]->regs + SMIDSW1);
++
++				if (chan & 1) {
++					writel(SMI_NEW, crtc_list[0]->regs + SMIDSW1);
++
++					if (crtc_list[1]->vblank_enabled)
++						drm_crtc_handle_vblank(&crtc_list[1]->base);
++					vc4_crtc_handle_page_flip(crtc_list[1]);
++				}
++			}
++		}
++
++		ret = IRQ_HANDLED;
++	}
++
++	return ret;
++}
++
++static int vc4_fkms_page_flip(struct drm_crtc *crtc,
++			      struct drm_framebuffer *fb,
++			      struct drm_pending_vblank_event *event,
++			      uint32_t flags,
++			      struct drm_modeset_acquire_ctx *ctx)
++{
++	if (flags & DRM_MODE_PAGE_FLIP_ASYNC) {
++		DRM_ERROR("Async flips aren't allowed\n");
++		return -EINVAL;
++	}
++
++	return drm_atomic_helper_page_flip(crtc, fb, event, flags, ctx);
++}
++
++static struct drm_crtc_state *
++vc4_fkms_crtc_duplicate_state(struct drm_crtc *crtc)
++{
++	struct vc4_crtc_state *vc4_state, *old_vc4_state;
++
++	vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL);
++	if (!vc4_state)
++		return NULL;
++
++	old_vc4_state = to_vc4_crtc_state(crtc->state);
++	vc4_state->margins = old_vc4_state->margins;
++
++	__drm_atomic_helper_crtc_duplicate_state(crtc, &vc4_state->base);
++	return &vc4_state->base;
++}
++
++static void
++vc4_fkms_crtc_reset(struct drm_crtc *crtc)
++{
++	if (crtc->state)
++		__drm_atomic_helper_crtc_destroy_state(crtc->state);
++
++	crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL);
++	if (crtc->state)
++		crtc->state->crtc = crtc;
++}
++
++static int vc4_fkms_enable_vblank(struct drm_crtc *crtc)
++{
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++
++	DRM_DEBUG_KMS("[CRTC:%d] enable_vblank.\n",
++		      crtc->base.id);
++	vc4_crtc->vblank_enabled = true;
++
++	return 0;
++}
++
++static void vc4_fkms_disable_vblank(struct drm_crtc *crtc)
++{
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++
++	DRM_DEBUG_KMS("[CRTC:%d] disable_vblank.\n",
++		      crtc->base.id);
++	vc4_crtc->vblank_enabled = false;
++}
++
++static const struct drm_crtc_funcs vc4_crtc_funcs = {
++	.set_config = drm_atomic_helper_set_config,
++	.destroy = drm_crtc_cleanup,
++	.page_flip = vc4_fkms_page_flip,
++	.set_property = NULL,
++	.cursor_set = NULL, /* handled by drm_mode_cursor_universal */
++	.cursor_move = NULL, /* handled by drm_mode_cursor_universal */
++	.reset = vc4_fkms_crtc_reset,
++	.atomic_duplicate_state = vc4_fkms_crtc_duplicate_state,
++	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
++	.enable_vblank = vc4_fkms_enable_vblank,
++	.disable_vblank = vc4_fkms_disable_vblank,
++};
++
++static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
++	.mode_set_nofb = vc4_crtc_mode_set_nofb,
++	.mode_valid = vc4_crtc_mode_valid,
++	.atomic_check = vc4_crtc_atomic_check,
++	.atomic_flush = vc4_crtc_atomic_flush,
++	.atomic_enable = vc4_crtc_enable,
++	.atomic_disable = vc4_crtc_disable,
++};
++
++static const struct of_device_id vc4_firmware_kms_dt_match[] = {
++	{ .compatible = "raspberrypi,rpi-firmware-kms" },
++	{ .compatible = "raspberrypi,rpi-firmware-kms-2711",
++	  .data = (void *)1 },
++	{}
++};
++
++static enum drm_connector_status
++vc4_fkms_connector_detect(struct drm_connector *connector, bool force)
++{
++	DRM_DEBUG_KMS("connector detect.\n");
++	return connector_status_connected;
++}
++
++/* Queries the firmware to populate a drm_mode structure for this display */
++static int vc4_fkms_get_fw_mode(struct vc4_fkms_connector *fkms_connector,
++				struct drm_display_mode *mode)
++{
++	struct vc4_dev *vc4 = fkms_connector->vc4_dev;
++	struct set_timings timings = { 0 };
++	int ret;
++
++	timings.display = fkms_connector->display_number;
++
++	ret = rpi_firmware_property(vc4->firmware,
++				    RPI_FIRMWARE_GET_DISPLAY_TIMING, &timings,
++				    sizeof(timings));
++	if (ret || !timings.clock)
++		/* No mode returned - abort */
++		return -1;
++
++	/* Equivalent to DRM_MODE macro. */
++	memset(mode, 0, sizeof(*mode));
++	strncpy(mode->name, "FIXED_MODE", sizeof(mode->name));
++	mode->status = 0;
++	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
++	mode->clock = timings.clock;
++	mode->hdisplay = timings.hdisplay;
++	mode->hsync_start = timings.hsync_start;
++	mode->hsync_end = timings.hsync_end;
++	mode->htotal = timings.htotal;
++	mode->hskew = 0;
++	mode->vdisplay = timings.vdisplay;
++	mode->vsync_start = timings.vsync_start;
++	mode->vsync_end = timings.vsync_end;
++	mode->vtotal = timings.vtotal;
++	mode->vscan = timings.vscan;
++
++	if (timings.flags & TIMINGS_FLAGS_H_SYNC_POS)
++		mode->flags |= DRM_MODE_FLAG_PHSYNC;
++	else
++		mode->flags |= DRM_MODE_FLAG_NHSYNC;
++
++	if (timings.flags & TIMINGS_FLAGS_V_SYNC_POS)
++		mode->flags |= DRM_MODE_FLAG_PVSYNC;
++	else
++		mode->flags |= DRM_MODE_FLAG_NVSYNC;
++
++	if (timings.flags & TIMINGS_FLAGS_INTERLACE)
++		mode->flags |= DRM_MODE_FLAG_INTERLACE;
++
++	return 0;
++}
++
++static int vc4_fkms_get_edid_block(void *data, u8 *buf, unsigned int block,
++				   size_t len)
++{
++	struct vc4_fkms_connector *fkms_connector =
++					(struct vc4_fkms_connector *)data;
++	struct vc4_dev *vc4 = fkms_connector->vc4_dev;
++	struct mailbox_get_edid mb = {
++		.tag1 = { RPI_FIRMWARE_GET_EDID_BLOCK_DISPLAY,
++			  128 + 8, 0 },
++		.block = block,
++		.display_number = fkms_connector->display_number,
++	};
++	int ret = 0;
++
++	ret = rpi_firmware_property_list(vc4->firmware, &mb, sizeof(mb));
++
++	if (!ret)
++		memcpy(buf, mb.edid, len);
++
++	return ret;
++}
++
++static int vc4_fkms_connector_get_modes(struct drm_connector *connector)
++{
++	struct vc4_fkms_connector *fkms_connector =
++					to_vc4_fkms_connector(connector);
++	struct drm_encoder *encoder = fkms_connector->encoder;
++	struct vc4_fkms_encoder *vc4_encoder = to_vc4_fkms_encoder(encoder);
++	struct drm_display_mode fw_mode;
++	struct drm_display_mode *mode;
++	struct edid *edid;
++	int num_modes;
++
++	if (!vc4_fkms_get_fw_mode(fkms_connector, &fw_mode)) {
++		drm_mode_debug_printmodeline(&fw_mode);
++		mode = drm_mode_duplicate(connector->dev,
++					  &fw_mode);
++		drm_mode_probed_add(connector, mode);
++		num_modes = 1;	/* 1 mode */
++	} else {
++		edid = drm_do_get_edid(connector, vc4_fkms_get_edid_block,
++				       fkms_connector);
++
++		/* FIXME: Can we do CEC?
++		 * cec_s_phys_addr_from_edid(vc4->hdmi->cec_adap, edid);
++		 * if (!edid)
++		 *	return -ENODEV;
++		 */
++
++		vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
++
++		drm_connector_update_edid_property(connector, edid);
++		num_modes = drm_add_edid_modes(connector, edid);
++		kfree(edid);
++	}
++
++	return num_modes;
++}
++
++/* This is the DSI panel resolution. Use this as a default should the firmware
++ * not respond to our request for the timings.
++ */
++static const struct drm_display_mode lcd_mode = {
++	DRM_MODE("800x480", DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
++		 25979400 / 1000,
++		 800, 800 + 1, 800 + 1 + 2, 800 + 1 + 2 + 46, 0,
++		 480, 480 + 7, 480 + 7 + 2, 480 + 7 + 2 + 21, 0,
++		 0)
++};
++
++static int vc4_fkms_lcd_connector_get_modes(struct drm_connector *connector)
++{
++	struct vc4_fkms_connector *fkms_connector =
++					to_vc4_fkms_connector(connector);
++	struct drm_display_mode *mode;
++	struct drm_display_mode fw_mode;
++
++	if (!vc4_fkms_get_fw_mode(fkms_connector, &fw_mode) && fw_mode.clock)
++		mode = drm_mode_duplicate(connector->dev,
++					  &fw_mode);
++	else
++		mode = drm_mode_duplicate(connector->dev,
++					  &lcd_mode);
++
++	if (!mode) {
++		DRM_ERROR("Failed to create a new display mode\n");
++		return -ENOMEM;
++	}
++
++	drm_mode_probed_add(connector, mode);
++
++	/* We have one mode */
++	return 1;
++}
++
++static struct drm_encoder *
++vc4_fkms_connector_best_encoder(struct drm_connector *connector)
++{
++	struct vc4_fkms_connector *fkms_connector =
++		to_vc4_fkms_connector(connector);
++	DRM_DEBUG_KMS("best_connector.\n");
++	return fkms_connector->encoder;
++}
++
++static void vc4_fkms_connector_destroy(struct drm_connector *connector)
++{
++	DRM_DEBUG_KMS("[CONNECTOR:%d] destroy.\n",
++		      connector->base.id);
++	drm_connector_unregister(connector);
++	drm_connector_cleanup(connector);
++}
++
++/**
++ * vc4_connector_duplicate_state - duplicate connector state
++ * @connector: digital connector
++ *
++ * Allocates and returns a copy of the connector state (both common and
++ * digital connector specific) for the specified connector.
++ *
++ * Returns: The newly allocated connector state, or NULL on failure.
++ */
++struct drm_connector_state *
++vc4_connector_duplicate_state(struct drm_connector *connector)
++{
++	struct vc4_fkms_connector_state *state;
++
++	state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
++	if (!state)
++		return NULL;
++
++	__drm_atomic_helper_connector_duplicate_state(connector, &state->base);
++	return &state->base;
++}
++
++/**
++ * vc4_connector_atomic_get_property - hook for connector->atomic_get_property.
++ * @connector: Connector to get the property for.
++ * @state: Connector state to retrieve the property from.
++ * @property: Property to retrieve.
++ * @val: Return value for the property.
++ *
++ * Returns the atomic property value for a digital connector.
++ */
++int vc4_connector_atomic_get_property(struct drm_connector *connector,
++				      const struct drm_connector_state *state,
++				      struct drm_property *property,
++				      uint64_t *val)
++{
++	struct vc4_fkms_connector *fkms_connector =
++					to_vc4_fkms_connector(connector);
++	struct vc4_fkms_connector_state *vc4_conn_state =
++					to_vc4_fkms_connector_state(state);
++
++	if (property == fkms_connector->broadcast_rgb_property) {
++		*val = vc4_conn_state->broadcast_rgb;
++	} else {
++		DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n",
++				 property->base.id, property->name);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * vc4_connector_atomic_set_property - hook for connector->atomic_set_property.
++ * @connector: Connector to set the property for.
++ * @state: Connector state to set the property on.
++ * @property: Property to set.
++ * @val: New value for the property.
++ *
++ * Sets the atomic property value for a digital connector.
++ */
++int vc4_connector_atomic_set_property(struct drm_connector *connector,
++				      struct drm_connector_state *state,
++				      struct drm_property *property,
++				      uint64_t val)
++{
++	struct vc4_fkms_connector *fkms_connector =
++					to_vc4_fkms_connector(connector);
++	struct vc4_fkms_connector_state *vc4_conn_state =
++					to_vc4_fkms_connector_state(state);
++
++	if (property == fkms_connector->broadcast_rgb_property) {
++		vc4_conn_state->broadcast_rgb = val;
++		return 0;
++	}
++
++	DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n",
++			 property->base.id, property->name);
++	return -EINVAL;
++}
++
++int vc4_connector_atomic_check(struct drm_connector *connector,
++			       struct drm_atomic_state *state)
++{
++	struct drm_connector_state *old_state =
++		drm_atomic_get_old_connector_state(state, connector);
++	struct vc4_fkms_connector_state *vc4_old_state =
++					to_vc4_fkms_connector_state(old_state);
++	struct drm_connector_state *new_state =
++		drm_atomic_get_new_connector_state(state, connector);
++	struct vc4_fkms_connector_state *vc4_new_state =
++					to_vc4_fkms_connector_state(new_state);
++	struct drm_crtc *crtc = new_state->crtc;
++
++	if (!crtc)
++		return 0;
++
++	if (vc4_old_state->broadcast_rgb != vc4_new_state->broadcast_rgb) {
++		struct drm_crtc_state *crtc_state;
++
++		crtc_state = drm_atomic_get_crtc_state(state, crtc);
++		if (IS_ERR(crtc_state))
++			return PTR_ERR(crtc_state);
++
++		crtc_state->mode_changed = true;
++	}
++	return 0;
++}
++
++static void vc4_hdmi_connector_reset(struct drm_connector *connector)
++{
++	drm_atomic_helper_connector_reset(connector);
++	drm_atomic_helper_connector_tv_reset(connector);
++}
++
++static const struct drm_connector_funcs vc4_fkms_connector_funcs = {
++	.detect = vc4_fkms_connector_detect,
++	.fill_modes = drm_helper_probe_single_connector_modes,
++	.destroy = vc4_fkms_connector_destroy,
++	.reset = vc4_hdmi_connector_reset,
++	.atomic_duplicate_state = vc4_connector_duplicate_state,
++	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
++	.atomic_get_property = vc4_connector_atomic_get_property,
++	.atomic_set_property = vc4_connector_atomic_set_property,
++};
++
++static const struct drm_connector_helper_funcs vc4_fkms_connector_helper_funcs = {
++	.get_modes = vc4_fkms_connector_get_modes,
++	.best_encoder = vc4_fkms_connector_best_encoder,
++	.atomic_check = vc4_connector_atomic_check,
++};
++
++static const struct drm_connector_helper_funcs vc4_fkms_lcd_conn_helper_funcs = {
++	.get_modes = vc4_fkms_lcd_connector_get_modes,
++	.best_encoder = vc4_fkms_connector_best_encoder,
++};
++
++static const struct drm_prop_enum_list broadcast_rgb_names[] = {
++	{ VC4_BROADCAST_RGB_AUTO, "Automatic" },
++	{ VC4_BROADCAST_RGB_FULL, "Full" },
++	{ VC4_BROADCAST_RGB_LIMITED, "Limited 16:235" },
++};
++
++static void
++vc4_attach_broadcast_rgb_property(struct vc4_fkms_connector *fkms_connector)
++{
++	struct drm_device *dev = fkms_connector->base.dev;
++	struct drm_property *prop;
++
++	prop = fkms_connector->broadcast_rgb_property;
++	if (!prop) {
++		prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
++						"Broadcast RGB",
++						broadcast_rgb_names,
++						ARRAY_SIZE(broadcast_rgb_names));
++		if (!prop)
++			return;
++
++		fkms_connector->broadcast_rgb_property = prop;
++	}
++
++	drm_object_attach_property(&fkms_connector->base.base, prop, 0);
++}
++
++static struct drm_connector *
++vc4_fkms_connector_init(struct drm_device *dev, struct drm_encoder *encoder,
++			u32 display_num)
++{
++	struct drm_connector *connector = NULL;
++	struct vc4_fkms_connector *fkms_connector;
++	struct vc4_fkms_connector_state *conn_state = NULL;
++	struct vc4_dev *vc4_dev = to_vc4_dev(dev);
++	int ret = 0;
++
++	DRM_DEBUG_KMS("connector_init, display_num %u\n", display_num);
++
++	fkms_connector = devm_kzalloc(dev->dev, sizeof(*fkms_connector),
++				      GFP_KERNEL);
++	if (!fkms_connector)
++		return ERR_PTR(-ENOMEM);
++
++	/*
++	 * Allocate enough memory to hold vc4_fkms_connector_state,
++	 */
++	conn_state = kzalloc(sizeof(*conn_state), GFP_KERNEL);
++	if (!conn_state) {
++		kfree(fkms_connector);
++		return ERR_PTR(-ENOMEM);
++	}
++
++	connector = &fkms_connector->base;
++
++	fkms_connector->encoder = encoder;
++	fkms_connector->display_number = display_num;
++	fkms_connector->display_type = vc4_get_display_type(display_num);
++	fkms_connector->vc4_dev = vc4_dev;
++
++	__drm_atomic_helper_connector_reset(connector,
++					    &conn_state->base);
++
++	if (fkms_connector->display_type == DRM_MODE_ENCODER_DSI) {
++		drm_connector_init(dev, connector, &vc4_fkms_connector_funcs,
++				   DRM_MODE_CONNECTOR_DSI);
++		drm_connector_helper_add(connector,
++					 &vc4_fkms_lcd_conn_helper_funcs);
++		connector->interlace_allowed = 0;
++	} else if (fkms_connector->display_type == DRM_MODE_ENCODER_TVDAC) {
++		drm_connector_init(dev, connector, &vc4_fkms_connector_funcs,
++				   DRM_MODE_CONNECTOR_Composite);
++		drm_connector_helper_add(connector,
++					 &vc4_fkms_lcd_conn_helper_funcs);
++		connector->interlace_allowed = 1;
++	} else {
++		drm_connector_init(dev, connector, &vc4_fkms_connector_funcs,
++				   DRM_MODE_CONNECTOR_HDMIA);
++		drm_connector_helper_add(connector,
++					 &vc4_fkms_connector_helper_funcs);
++		connector->interlace_allowed = 1;
++	}
++
++	ret = drm_mode_create_tv_margin_properties(dev);
++	if (ret)
++		goto fail;
++
++	drm_connector_attach_tv_margin_properties(connector);
++
++	connector->polled = (DRM_CONNECTOR_POLL_CONNECT |
++			     DRM_CONNECTOR_POLL_DISCONNECT);
++
++	connector->doublescan_allowed = 0;
++
++	vc4_attach_broadcast_rgb_property(fkms_connector);
++
++	drm_connector_attach_encoder(connector, encoder);
++
++	return connector;
++
++ fail:
++	if (connector)
++		vc4_fkms_connector_destroy(connector);
++
++	return ERR_PTR(ret);
++}
++
++static void vc4_fkms_encoder_destroy(struct drm_encoder *encoder)
++{
++	DRM_DEBUG_KMS("Encoder_destroy\n");
++	drm_encoder_cleanup(encoder);
++}
++
++static const struct drm_encoder_funcs vc4_fkms_encoder_funcs = {
++	.destroy = vc4_fkms_encoder_destroy,
++};
++
++static void vc4_fkms_display_power(struct drm_encoder *encoder, bool power)
++{
++	struct vc4_fkms_encoder *vc4_encoder = to_vc4_fkms_encoder(encoder);
++	struct vc4_dev *vc4 = to_vc4_dev(encoder->dev);
++
++	struct mailbox_display_pwr pwr = {
++		.tag1 = {RPI_FIRMWARE_SET_DISPLAY_POWER, 8, 0, },
++		.display = vc4_encoder->display_num,
++		.state = power ? 1 : 0,
++	};
++
++	rpi_firmware_property_list(vc4->firmware, &pwr, sizeof(pwr));
++}
++
++static void vc4_fkms_encoder_enable(struct drm_encoder *encoder)
++{
++	vc4_fkms_display_power(encoder, true);
++	DRM_DEBUG_KMS("Encoder_enable\n");
++}
++
++static void vc4_fkms_encoder_disable(struct drm_encoder *encoder)
++{
++	vc4_fkms_display_power(encoder, false);
++	DRM_DEBUG_KMS("Encoder_disable\n");
++}
++
++static const struct drm_encoder_helper_funcs vc4_fkms_encoder_helper_funcs = {
++	.enable = vc4_fkms_encoder_enable,
++	.disable = vc4_fkms_encoder_disable,
++};
++
++static int vc4_fkms_create_screen(struct device *dev, struct drm_device *drm,
++				  int display_idx, int display_ref,
++				  struct vc4_crtc **ret_crtc)
++{
++	struct vc4_dev *vc4 = to_vc4_dev(drm);
++	struct vc4_crtc *vc4_crtc;
++	struct vc4_fkms_encoder *vc4_encoder;
++	struct drm_crtc *crtc;
++	struct drm_plane *destroy_plane, *temp;
++	struct mailbox_blank_display blank = {
++		.tag1 = {RPI_FIRMWARE_FRAMEBUFFER_SET_DISPLAY_NUM, 4, 0, },
++		.display = display_idx,
++		.tag2 = { RPI_FIRMWARE_FRAMEBUFFER_BLANK, 4, 0, },
++		.blank = 1,
++	};
++	struct drm_plane *planes[PLANES_PER_CRTC];
++	int ret, i;
++
++	vc4_crtc = devm_kzalloc(dev, sizeof(*vc4_crtc), GFP_KERNEL);
++	if (!vc4_crtc)
++		return -ENOMEM;
++	crtc = &vc4_crtc->base;
++
++	vc4_crtc->display_number = display_ref;
++	vc4_crtc->display_type = vc4_get_display_type(display_ref);
++
++	/* Blank the firmware provided framebuffer */
++	rpi_firmware_property_list(vc4->firmware, &blank, sizeof(blank));
++
++	for (i = 0; i < PLANES_PER_CRTC; i++) {
++		planes[i] = vc4_fkms_plane_init(drm,
++						(i == 0) ?
++						  DRM_PLANE_TYPE_PRIMARY :
++						  (i == PLANES_PER_CRTC - 1) ?
++							DRM_PLANE_TYPE_CURSOR :
++							DRM_PLANE_TYPE_OVERLAY,
++						display_ref,
++						i + (display_idx * PLANES_PER_CRTC)
++					       );
++		if (IS_ERR(planes[i])) {
++			dev_err(dev, "failed to construct plane %u\n", i);
++			ret = PTR_ERR(planes[i]);
++			goto err;
++		}
++	}
++
++	drm_crtc_init_with_planes(drm, crtc, planes[0],
++				  planes[PLANES_PER_CRTC - 1], &vc4_crtc_funcs,
++				  NULL);
++	drm_crtc_helper_add(crtc, &vc4_crtc_helper_funcs);
++
++	/* Update the possible_crtcs mask for the overlay plane(s) */
++	for (i = 1; i < (PLANES_PER_CRTC - 1); i++)
++		planes[i]->possible_crtcs = drm_crtc_mask(crtc);
++
++	vc4_encoder = devm_kzalloc(dev, sizeof(*vc4_encoder), GFP_KERNEL);
++	if (!vc4_encoder)
++		return -ENOMEM;
++	vc4_crtc->encoder = &vc4_encoder->base;
++
++	vc4_encoder->display_num = display_ref;
++	vc4_encoder->base.possible_crtcs |= drm_crtc_mask(crtc);
++
++	drm_encoder_init(drm, &vc4_encoder->base, &vc4_fkms_encoder_funcs,
++			 vc4_crtc->display_type, NULL);
++	drm_encoder_helper_add(&vc4_encoder->base,
++			       &vc4_fkms_encoder_helper_funcs);
++
++	vc4_crtc->connector = vc4_fkms_connector_init(drm, &vc4_encoder->base,
++						      display_ref);
++	if (IS_ERR(vc4_crtc->connector)) {
++		ret = PTR_ERR(vc4_crtc->connector);
++		goto err_destroy_encoder;
++	}
++
++	*ret_crtc = vc4_crtc;
++
++	return 0;
++
++err_destroy_encoder:
++	vc4_fkms_encoder_destroy(vc4_crtc->encoder);
++	list_for_each_entry_safe(destroy_plane, temp,
++				 &drm->mode_config.plane_list, head) {
++		if (destroy_plane->possible_crtcs == 1 << drm_crtc_index(crtc))
++			destroy_plane->funcs->destroy(destroy_plane);
++	}
++err:
++	return ret;
++}
++
++static int vc4_fkms_bind(struct device *dev, struct device *master, void *data)
++{
++	struct platform_device *pdev = to_platform_device(dev);
++	struct drm_device *drm = dev_get_drvdata(master);
++	struct vc4_dev *vc4 = to_vc4_dev(drm);
++	struct device_node *firmware_node;
++	const struct of_device_id *match;
++	struct vc4_crtc **crtc_list;
++	u32 num_displays, display_num;
++	struct vc4_fkms *fkms;
++	int ret;
++	u32 display_id;
++
++	vc4->firmware_kms = true;
++
++	fkms = devm_kzalloc(dev, sizeof(*fkms), GFP_KERNEL);
++	if (!fkms)
++		return -ENOMEM;
++
++	match = of_match_device(vc4_firmware_kms_dt_match, dev);
++	if (!match)
++		return -ENODEV;
++	if (match->data)
++		fkms->bcm2711 = true;
++
++	firmware_node = of_parse_phandle(dev->of_node, "brcm,firmware", 0);
++	vc4->firmware = devm_rpi_firmware_get(&pdev->dev, firmware_node);
++	if (!vc4->firmware) {
++		DRM_DEBUG("Failed to get Raspberry Pi firmware reference.\n");
++		return -EPROBE_DEFER;
++	}
++	of_node_put(firmware_node);
++
++	ret = rpi_firmware_property(vc4->firmware,
++				    RPI_FIRMWARE_FRAMEBUFFER_GET_NUM_DISPLAYS,
++				    &num_displays, sizeof(u32));
++
++	/* If we fail to get the number of displays, then
++	 * assume old firmware that doesn't have the mailbox call, so just
++	 * set one display
++	 */
++	if (ret) {
++		num_displays = 1;
++		DRM_WARN("Unable to determine number of displays - assuming 1\n");
++		ret = 0;
++	}
++
++	ret = rpi_firmware_property(vc4->firmware,
++				    RPI_FIRMWARE_GET_DISPLAY_CFG,
++				    &fkms->cfg, sizeof(fkms->cfg));
++
++	if (ret)
++		return -EINVAL;
++	/* The firmware works in Hz. This will be compared against kHz, so div
++	 * 1000 now rather than multiple times later.
++	 */
++	fkms->cfg.max_pixel_clock[0] /= 1000;
++	fkms->cfg.max_pixel_clock[1] /= 1000;
++
++	/* Allocate a list, with space for a NULL on the end */
++	crtc_list = devm_kzalloc(dev, sizeof(crtc_list) * (num_displays + 1),
++				 GFP_KERNEL);
++	if (!crtc_list)
++		return -ENOMEM;
++
++	for (display_num = 0; display_num < num_displays; display_num++) {
++		display_id = display_num;
++		ret = rpi_firmware_property(vc4->firmware,
++					    RPI_FIRMWARE_FRAMEBUFFER_GET_DISPLAY_ID,
++					    &display_id, sizeof(display_id));
++		/* FIXME: Determine the correct error handling here.
++		 * Should we fail to create the one "screen" but keep the
++		 * others, or fail the whole thing?
++		 */
++		if (ret)
++			DRM_ERROR("Failed to get display id %u\n", display_num);
++
++		ret = vc4_fkms_create_screen(dev, drm, display_num, display_id,
++					     &crtc_list[display_num]);
++		if (ret)
++			DRM_ERROR("Oh dear, failed to create display %u\n",
++				  display_num);
++	}
++
++	if (num_displays > 0) {
++		/* Map the SMI interrupt reg */
++		crtc_list[0]->regs = vc4_ioremap_regs(pdev, 0);
++		if (IS_ERR(crtc_list[0]->regs))
++			DRM_ERROR("Oh dear, failed to map registers\n");
++
++		writel(0, crtc_list[0]->regs + SMICS);
++		ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
++				       vc4_crtc_irq_handler, 0,
++				       "vc4 firmware kms", crtc_list);
++		if (ret)
++			DRM_ERROR("Oh dear, failed to register IRQ\n");
++	} else {
++		DRM_WARN("No displays found. Consider forcing hotplug if HDMI is attached\n");
++	}
++
++	vc4->fkms = fkms;
++
++	platform_set_drvdata(pdev, crtc_list);
++
++	return 0;
++}
++
++static void vc4_fkms_unbind(struct device *dev, struct device *master,
++			    void *data)
++{
++	struct platform_device *pdev = to_platform_device(dev);
++	struct vc4_crtc **crtc_list = dev_get_drvdata(dev);
++	int i;
++
++	for (i = 0; crtc_list[i]; i++) {
++		vc4_fkms_connector_destroy(crtc_list[i]->connector);
++		vc4_fkms_encoder_destroy(crtc_list[i]->encoder);
++		drm_crtc_cleanup(&crtc_list[i]->base);
++	}
++
++	platform_set_drvdata(pdev, NULL);
++}
++
++static const struct component_ops vc4_fkms_ops = {
++	.bind   = vc4_fkms_bind,
++	.unbind = vc4_fkms_unbind,
++};
++
++static int vc4_fkms_probe(struct platform_device *pdev)
++{
++	return component_add(&pdev->dev, &vc4_fkms_ops);
++}
++
++static int vc4_fkms_remove(struct platform_device *pdev)
++{
++	component_del(&pdev->dev, &vc4_fkms_ops);
++	return 0;
++}
++
++struct platform_driver vc4_firmware_kms_driver = {
++	.probe = vc4_fkms_probe,
++	.remove = vc4_fkms_remove,
++	.driver = {
++		.name = "vc4_firmware_kms",
++		.of_match_table = vc4_firmware_kms_dt_match,
++	},
++};
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -160,6 +160,9 @@ vc4_ctm_commit(struct vc4_dev *vc4, stru
+ 	struct vc4_ctm_state *ctm_state = to_vc4_ctm_state(vc4->ctm_manager.state);
+ 	struct drm_color_ctm *ctm = ctm_state->ctm;
+ 
++	if (vc4->firmware_kms)
++		return;
++
+ 	if (ctm_state->fifo) {
+ 		HVS_WRITE(SCALER_OLEDCOEF2,
+ 			  VC4_SET_FIELD(vc4_ctm_s31_32_to_s0_9(ctm->matrix[0]),
+@@ -359,7 +362,7 @@ static void vc4_atomic_commit_tail(struc
+ 	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
+ 		struct vc4_crtc_state *vc4_crtc_state;
+ 
+-		if (!new_crtc_state->commit)
++		if (!new_crtc_state->commit || vc4->firmware_kms)
+ 			continue;
+ 
+ 		vc4_crtc_state = to_vc4_crtc_state(new_crtc_state);
+@@ -385,7 +388,7 @@ static void vc4_atomic_commit_tail(struc
+ 		old_hvs_state->fifo_state[channel].pending_commit = NULL;
+ 	}
+ 
+-	if (vc4->hvs->hvs5) {
++	if (vc4->hvs && vc4->hvs->hvs5) {
+ 		unsigned long core_rate = max_t(unsigned long,
+ 						500000000,
+ 						new_hvs_state->core_clock_rate);
+@@ -402,10 +405,12 @@ static void vc4_atomic_commit_tail(struc
+ 
+ 	vc4_ctm_commit(vc4, state);
+ 
+-	if (vc4->hvs->hvs5)
+-		vc5_hvs_pv_muxing_commit(vc4, state);
+-	else
+-		vc4_hvs_pv_muxing_commit(vc4, state);
++	if (!vc4->firmware_kms) {
++		if (vc4->hvs && vc4->hvs->hvs5)
++			vc5_hvs_pv_muxing_commit(vc4, state);
++		else
++			vc4_hvs_pv_muxing_commit(vc4, state);
++	}
+ 
+ 	drm_atomic_helper_commit_planes(dev, state, 0);
+ 
+@@ -419,7 +424,7 @@ static void vc4_atomic_commit_tail(struc
+ 
+ 	drm_atomic_helper_cleanup_planes(dev, state);
+ 
+-	if (vc4->hvs->hvs5) {
++	if (vc4->hvs && vc4->hvs->hvs5) {
+ 		drm_dbg(dev, "Running the core clock at %lu Hz\n",
+ 			new_hvs_state->core_clock_rate);
+ 
+@@ -437,11 +442,21 @@ static void vc4_atomic_commit_tail(struc
+ 
+ static int vc4_atomic_commit_setup(struct drm_atomic_state *state)
+ {
++	struct drm_device *dev = state->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_crtc_state *crtc_state;
+ 	struct vc4_hvs_state *hvs_state;
+ 	struct drm_crtc *crtc;
+ 	unsigned int i;
+ 
++	/* We know for sure we don't want an async update here. Set
++	 * state->legacy_cursor_update to false to prevent
++	 * drm_atomic_helper_setup_commit() from auto-completing
++	 * commit->flip_done.
++	 */
++	if (!vc4->firmware_kms)
++		state->legacy_cursor_update = false;
++
+ 	hvs_state = vc4_hvs_get_new_global_state(state);
+ 	if (WARN_ON(IS_ERR(hvs_state)))
+ 		return PTR_ERR(hvs_state);
+@@ -775,6 +790,7 @@ static int vc4_hvs_channels_obj_init(str
+ static int vc4_pv_muxing_atomic_check(struct drm_device *dev,
+ 				      struct drm_atomic_state *state)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(state->dev);
+ 	struct vc4_hvs_state *hvs_new_state;
+ 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
+ 	struct drm_crtc *crtc;
+@@ -798,6 +814,9 @@ static int vc4_pv_muxing_atomic_check(st
+ 		unsigned int matching_channels;
+ 		unsigned int channel;
+ 
++		if (vc4->firmware_kms)
++			continue;
++
+ 		/* Nothing to do here, let's skip it */
+ 		if (old_crtc_state->enable == new_crtc_state->enable)
+ 			continue;
+@@ -995,6 +1014,8 @@ int vc4_kms_load(struct drm_device *dev)
+ 	dev->mode_config.helper_private = &vc4_mode_config_helpers;
+ 	dev->mode_config.preferred_depth = 24;
+ 	dev->mode_config.async_page_flip = true;
++	if (vc4->firmware_kms)
++		dev->mode_config.normalize_zpos = true;
+ 
+ 	ret = vc4_ctm_obj_init(vc4);
+ 	if (ret)
+--- /dev/null
++++ b/drivers/gpu/drm/vc4/vc_image_types.h
+@@ -0,0 +1,175 @@
++
++/*
++ * Copyright (c) 2012, Broadcom Europe Ltd
++ *
++ * Values taken from vc_image_types.h released by Broadcom at
++ * https://github.com/raspberrypi/userland/blob/master/interface/vctypes/vc_image_types.h
++ * and vc_image_structs.h at
++ * https://github.com/raspberrypi/userland/blob/master/interface/vctypes/vc_image_structs.h
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++enum {
++	VC_IMAGE_MIN = 0, //bounds for error checking
++
++	VC_IMAGE_RGB565 = 1,
++	VC_IMAGE_1BPP,
++	VC_IMAGE_YUV420,
++	VC_IMAGE_48BPP,
++	VC_IMAGE_RGB888,
++	VC_IMAGE_8BPP,
++	/* 4bpp palettised image */
++	VC_IMAGE_4BPP,
++	/* A separated format of 16 colour/light shorts followed by 16 z
++	 * values
++	 */
++	VC_IMAGE_3D32,
++	/* 16 colours followed by 16 z values */
++	VC_IMAGE_3D32B,
++	/* A separated format of 16 material/colour/light shorts followed by
++	 * 16 z values
++	 */
++	VC_IMAGE_3D32MAT,
++	/* 32 bit format containing 18 bits of 6.6.6 RGB, 9 bits per short */
++	VC_IMAGE_RGB2X9,
++	/* 32-bit format holding 18 bits of 6.6.6 RGB */
++	VC_IMAGE_RGB666,
++	/* 4bpp palettised image with embedded palette */
++	VC_IMAGE_PAL4_OBSOLETE,
++	/* 8bpp palettised image with embedded palette */
++	VC_IMAGE_PAL8_OBSOLETE,
++	/* RGB888 with an alpha byte after each pixel */
++	VC_IMAGE_RGBA32,
++	/* a line of Y (32-byte padded), a line of U (16-byte padded), and a
++	 * line of V (16-byte padded)
++	 */
++	VC_IMAGE_YUV422,
++	/* RGB565 with a transparent patch */
++	VC_IMAGE_RGBA565,
++	/* Compressed (4444) version of RGBA32 */
++	VC_IMAGE_RGBA16,
++	/* VCIII codec format */
++	VC_IMAGE_YUV_UV,
++	/* VCIII T-format RGBA8888 */
++	VC_IMAGE_TF_RGBA32,
++	/* VCIII T-format RGBx8888 */
++	VC_IMAGE_TF_RGBX32,
++	/* VCIII T-format float */
++	VC_IMAGE_TF_FLOAT,
++	/* VCIII T-format RGBA4444 */
++	VC_IMAGE_TF_RGBA16,
++	/* VCIII T-format RGB5551 */
++	VC_IMAGE_TF_RGBA5551,
++	/* VCIII T-format RGB565 */
++	VC_IMAGE_TF_RGB565,
++	/* VCIII T-format 8-bit luma and 8-bit alpha */
++	VC_IMAGE_TF_YA88,
++	/* VCIII T-format 8 bit generic sample */
++	VC_IMAGE_TF_BYTE,
++	/* VCIII T-format 8-bit palette */
++	VC_IMAGE_TF_PAL8,
++	/* VCIII T-format 4-bit palette */
++	VC_IMAGE_TF_PAL4,
++	/* VCIII T-format Ericsson Texture Compressed */
++	VC_IMAGE_TF_ETC1,
++	/* RGB888 with R & B swapped */
++	VC_IMAGE_BGR888,
++	/* RGB888 with R & B swapped, but with no pitch, i.e. no padding after
++	 * each row of pixels
++	 */
++	VC_IMAGE_BGR888_NP,
++	/* Bayer image, extra defines which variant is being used */
++	VC_IMAGE_BAYER,
++	/* General wrapper for codec images e.g. JPEG from camera */
++	VC_IMAGE_CODEC,
++	/* VCIII codec format */
++	VC_IMAGE_YUV_UV32,
++	/* VCIII T-format 8-bit luma */
++	VC_IMAGE_TF_Y8,
++	/* VCIII T-format 8-bit alpha */
++	VC_IMAGE_TF_A8,
++	/* VCIII T-format 16-bit generic sample */
++	VC_IMAGE_TF_SHORT,
++	/* VCIII T-format 1bpp black/white */
++	VC_IMAGE_TF_1BPP,
++	VC_IMAGE_OPENGL,
++	/* VCIII-B0 HVS YUV 4:4:4 interleaved samples */
++	VC_IMAGE_YUV444I,
++	/* Y, U, & V planes separately (VC_IMAGE_YUV422 has them interleaved on
++	 * a per line basis)
++	 */
++	VC_IMAGE_YUV422PLANAR,
++	/* 32bpp with 8bit alpha at MS byte, with R, G, B (LS byte) */
++	VC_IMAGE_ARGB8888,
++	/* 32bpp with 8bit unused at MS byte, with R, G, B (LS byte) */
++	VC_IMAGE_XRGB8888,
++
++	/* interleaved 8 bit samples of Y, U, Y, V (4 flavours) */
++	VC_IMAGE_YUV422YUYV,
++	VC_IMAGE_YUV422YVYU,
++	VC_IMAGE_YUV422UYVY,
++	VC_IMAGE_YUV422VYUY,
++
++	/* 32bpp like RGBA32 but with unused alpha */
++	VC_IMAGE_RGBX32,
++	/* 32bpp, corresponding to RGBA with unused alpha */
++	VC_IMAGE_RGBX8888,
++	/* 32bpp, corresponding to BGRA with unused alpha */
++	VC_IMAGE_BGRX8888,
++
++	/* Y as a plane, then UV byte interleaved in plane with same pitch,
++	 * half height
++	 */
++	VC_IMAGE_YUV420SP,
++
++	/* Y, U, & V planes separately 4:4:4 */
++	VC_IMAGE_YUV444PLANAR,
++
++	/* T-format 8-bit U - same as TF_Y8 buf from U plane */
++	VC_IMAGE_TF_U8,
++	/* T-format 8-bit U - same as TF_Y8 buf from V plane */
++	VC_IMAGE_TF_V8,
++
++	/* YUV4:2:0 planar, 16bit values */
++	VC_IMAGE_YUV420_16,
++	/* YUV4:2:0 codec format, 16bit values */
++	VC_IMAGE_YUV_UV_16,
++	/* YUV4:2:0 with U,V in side-by-side format */
++	VC_IMAGE_YUV420_S,
++	/* 10-bit YUV 420 column image format */
++	VC_IMAGE_YUV10COL,
++	/* 32-bpp, 10-bit R/G/B, 2-bit Alpha */
++	VC_IMAGE_RGBA1010102,
++
++	VC_IMAGE_MAX,     /* bounds for error checking */
++	VC_IMAGE_FORCE_ENUM_16BIT = 0xffff,
++};
++
++enum {
++	/* Unknown or unset - defaults to BT601 interstitial */
++	VC_IMAGE_YUVINFO_UNSPECIFIED    = 0,
++
++	/* colour-space conversions data [4 bits] */
++
++	/* ITU-R BT.601-5 [SDTV] (compatible with VideoCore-II) */
++	VC_IMAGE_YUVINFO_CSC_ITUR_BT601      = 1,
++	/* ITU-R BT.709-3 [HDTV] */
++	VC_IMAGE_YUVINFO_CSC_ITUR_BT709      = 2,
++	/* JPEG JFIF */
++	VC_IMAGE_YUVINFO_CSC_JPEG_JFIF       = 3,
++	/* Title 47 Code of Federal Regulations (2003) 73.682 (a) (20) */
++	VC_IMAGE_YUVINFO_CSC_FCC             = 4,
++	/* Society of Motion Picture and Television Engineers 240M (1999) */
++	VC_IMAGE_YUVINFO_CSC_SMPTE_240M      = 5,
++	/* ITU-R BT.470-2 System M */
++	VC_IMAGE_YUVINFO_CSC_ITUR_BT470_2_M  = 6,
++	/* ITU-R BT.470-2 System B,G */
++	VC_IMAGE_YUVINFO_CSC_ITUR_BT470_2_BG = 7,
++	/* JPEG JFIF, but with 16..255 luma */
++	VC_IMAGE_YUVINFO_CSC_JPEG_JFIF_Y16_255 = 8,
++	/* Rec 2020 */
++	VC_IMAGE_YUVINFO_CSC_REC_2020        = 9,
++};
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -73,6 +73,7 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_GET_DISPMANX_RESOURCE_MEM_HANDLE =       0x00030014,
+ 	RPI_FIRMWARE_GET_EDID_BLOCK =                         0x00030020,
+ 	RPI_FIRMWARE_GET_CUSTOMER_OTP =                       0x00030021,
++	RPI_FIRMWARE_GET_EDID_BLOCK_DISPLAY =                 0x00030023,
+ 	RPI_FIRMWARE_GET_DOMAIN_STATE =                       0x00030030,
+ 	RPI_FIRMWARE_GET_THROTTLED =                          0x00030046,
+ 	RPI_FIRMWARE_GET_CLOCK_MEASURED =                     0x00030047,
+@@ -149,6 +150,11 @@ enum rpi_firmware_property_tag {
+ 
+ 	RPI_FIRMWARE_VCHIQ_INIT =                             0x00048010,
+ 
++	RPI_FIRMWARE_SET_PLANE =                              0x00048015,
++	RPI_FIRMWARE_GET_DISPLAY_TIMING =                     0x00040017,
++	RPI_FIRMWARE_SET_TIMING =                             0x00048017,
++	RPI_FIRMWARE_GET_DISPLAY_CFG =                        0x00040018,
++	RPI_FIRMWARE_SET_DISPLAY_POWER =		      0x00048019,
+ 	RPI_FIRMWARE_GET_COMMAND_LINE =                       0x00050001,
+ 	RPI_FIRMWARE_GET_DMA_CHANNELS =                       0x00060001,
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0453-media-i2c-imx477-Fix-framerates-for-1332x990-mode.patch b/target/linux/bcm27xx/patches-5.15/950-0453-media-i2c-imx477-Fix-framerates-for-1332x990-mode.patch
new file mode 100644
index 0000000000..3025186473
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0453-media-i2c-imx477-Fix-framerates-for-1332x990-mode.patch
@@ -0,0 +1,25 @@
+From 8ad37eff46c48fff0ae0bbdb04fcbc2216c8d2a9 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 20 Jul 2021 15:10:03 +0100
+Subject: [PATCH] media: i2c: imx477: Fix framerates for 1332x990 mode
+
+The imx477 driver's line length for this mode had not been updated to
+the value supplied to us by the sensor manufacturer. With this
+correction the sensor delivers the framerates that are expected.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -982,7 +982,7 @@ static const struct imx477_mode supporte
+ 		/* 120fps. 2x2 binned and cropped */
+ 		.width = 1332,
+ 		.height = 990,
+-		.line_length_pix = 0x1460,
++		.line_length_pix = 6664,
+ 		.crop = {
+ 			/*
+ 			 * FIXME: the analog crop rectangle is actually
diff --git a/target/linux/bcm27xx/patches-5.15/950-0454-ASoC-bcm-Compiler-warnings-in-audioinjector-octo.patch b/target/linux/bcm27xx/patches-5.15/950-0454-ASoC-bcm-Compiler-warnings-in-audioinjector-octo.patch
new file mode 100644
index 0000000000..1d3aa8b7f2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0454-ASoC-bcm-Compiler-warnings-in-audioinjector-octo.patch
@@ -0,0 +1,62 @@
+From 19d40913d12d4e837022003eca8b5a8c7565b8e6 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 27 Jul 2021 09:27:49 +0100
+Subject: [PATCH] ASoC: bcm: Compiler warnings in audioinjector-octo
+
+Avoid compiler warnings by using the "fallthrough" pseudo-keyword in
+place of the old "/* fall through */" comment convention.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ sound/soc/bcm/audioinjector-octo-soundcard.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/sound/soc/bcm/audioinjector-octo-soundcard.c
++++ b/sound/soc/bcm/audioinjector-octo-soundcard.c
+@@ -143,40 +143,40 @@ static int audioinjector_octo_trigger(st
+ 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ 		if (!non_stop_clocks)
+ 			break;
+-		/* fall through */
++		fallthrough;
+ 	case SNDRV_PCM_TRIGGER_START:
+ 	case SNDRV_PCM_TRIGGER_RESUME:
+ 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ 		switch (audioinjector_octo_rate) {
+ 		case 96000:
+ 			__assign_bit(3, mult, 1);
+-			/* fall through */
++			fallthrough;
+ 		case 88200:
+ 			__assign_bit(1, mult, 1);
+ 			__assign_bit(2, mult, 1);
+ 			break;
+ 		case 48000:
+ 			__assign_bit(3, mult, 1);
+-			/* fall through */
++			fallthrough;
+ 		case 44100:
+ 			__assign_bit(2, mult, 1);
+ 			break;
+ 		case 32000:
+ 			__assign_bit(3, mult, 1);
+-			/* fall through */
++			fallthrough;
+ 		case 29400:
+ 			__assign_bit(0, mult, 1);
+ 			__assign_bit(1, mult, 1);
+ 			break;
+ 		case 24000:
+ 			__assign_bit(3, mult, 1);
+-			/* fall through */
++			fallthrough;
+ 		case 22050:
+ 			__assign_bit(1, mult, 1);
+ 			break;
+ 		case 16000:
+ 			__assign_bit(3, mult, 1);
+-			/* fall through */
++			fallthrough;
+ 		case 14700:
+ 			__assign_bit(0, mult, 1);
+ 			break;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0455-media-i2c-tc358743-Fix-compiler-warning.patch b/target/linux/bcm27xx/patches-5.15/950-0455-media-i2c-tc358743-Fix-compiler-warning.patch
new file mode 100644
index 0000000000..a922992451
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0455-media-i2c-tc358743-Fix-compiler-warning.patch
@@ -0,0 +1,24 @@
+From b72686b694ac4979450853a6a5dc2ece3df9fe82 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 27 Jul 2021 11:17:08 +0100
+Subject: [PATCH] media: i2c: tc358743: Fix compiler warning
+
+Avoid a compiler warning by using the "fallthrough" pseudo-keyword in
+place of the old "/* fall through */" comment convention.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/media/i2c/tc358743.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/tc358743.c
++++ b/drivers/media/i2c/tc358743.c
+@@ -2008,7 +2008,7 @@ static int tc358743_probe_of(struct tc35
+ 	switch (bps_pr_lane) {
+ 	default:
+ 		dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane);
+-		/* fall through */
++		fallthrough;
+ 	case 594000000U:
+ 		state->pdata.lineinitcnt = 0xe80;
+ 		state->pdata.lptxtimecnt = 0x003;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch
new file mode 100644
index 0000000000..de69367552
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0456-ASoC-bcm-Add-chipdip-dac-driver.patch
@@ -0,0 +1,325 @@
+From 7da0da344225ec00f3070f9b4f6cb9dda06093ab Mon Sep 17 00:00:00 2001
+From: "chipdip.lab" <43340836+chipdipru@users.noreply.github.com>
+Date: Mon, 26 Jul 2021 14:45:59 +0300
+Subject: [PATCH] ASoC: bcm: Add chipdip-dac driver
+
+Driver chipdip-dac.c added into sound/soc/bcm/, files
+sound/soc/bcm/Kconfig and sound/soc/bcm/Makefile updated.
+
+Signed-off-by: Evgenij Sapunov <evgenij.sapunov@chipdip.ru>
+---
+ sound/soc/bcm/Kconfig       |   6 +
+ sound/soc/bcm/Makefile      |   3 +-
+ sound/soc/bcm/chipdip-dac.c | 275 ++++++++++++++++++++++++++++++++++++
+ 3 files changed, 283 insertions(+), 1 deletion(-)
+ create mode 100644 sound/soc/bcm/chipdip-dac.c
+
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -27,6 +27,12 @@ config SND_BCM63XX_I2S_WHISTLER
+ 
+ 	  If you don't know what to do here, say N
+ 
++config SND_BCM2708_SOC_CHIPDIP_DAC
++         tristate "Support for the ChipDip DAC"
++         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++         help
++          Say Y or M if you want to add support for the ChipDip DAC soundcard
++
+ config SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD
+ 	tristate "Support for Google voiceHAT soundcard"
+ 	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -47,6 +47,7 @@ snd-soc-fe-pi-audio-objs := fe-pi-audio.
+ snd-soc-rpi-simple-soundcard-objs := rpi-simple-soundcard.o
+ snd-soc-rpi-wm8804-soundcard-objs := rpi-wm8804-soundcard.o
+ snd-soc-pifi-40-objs := pifi-40.o
++snd-soc-chipdip-dac-objs := chipdip-dac.o
+ 
+ obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD)  += snd-soc-googlevoicehat-codec.o
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
+@@ -78,4 +79,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_FE_PI_AUDIO
+ obj-$(CONFIG_SND_RPI_SIMPLE_SOUNDCARD) += snd-soc-rpi-simple-soundcard.o
+ obj-$(CONFIG_SND_RPI_WM8804_SOUNDCARD) += snd-soc-rpi-wm8804-soundcard.o
+ obj-$(CONFIG_SND_BCM2708_SOC_PIFI_40) += snd-soc-pifi-40.o
+-
++obj-$(CONFIG_SND_BCM2708_SOC_CHIPDIP_DAC) += snd-soc-chipdip-dac.o
+--- /dev/null
++++ b/sound/soc/bcm/chipdip-dac.c
+@@ -0,0 +1,275 @@
++/*
++ * ASoC Driver for ChipDip DAC
++ *
++ * Author:	Evgenij Sapunov
++ *		Copyright 2021
++ *		based on code by Milan Neskovic <info@justboom.co>
++ *		based on code by Jaikumar <jaikumar@cem-solutions.net>
++ *
++ * Thanks to Phil Elwell (pelwell) for help.
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/gpio/consumer.h>
++#include <linux/platform_device.h>
++#include <linux/delay.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#define SR_BIT_0                  0 //sample rate bits
++#define SR_BIT_1                  1
++#define SR_BIT_2                  2
++#define BD_BIT_0                  3 //bit depth bits
++#define BD_BIT_1                  4
++
++#define SAMPLE_RATE_MASK_44_1     0
++#define SAMPLE_RATE_MASK_48       (1 << SR_BIT_0)
++#define SAMPLE_RATE_MASK_88_2     ((1 << SR_BIT_2) | (1 << SR_BIT_1))
++#define SAMPLE_RATE_MASK_96       (1 << SR_BIT_1)
++#define SAMPLE_RATE_MASK_176_4    ((1 << SR_BIT_2) | (1 << SR_BIT_1) | (1 << SR_BIT_0))
++#define SAMPLE_RATE_MASK_192      ((1 << SR_BIT_1) | (1 << SR_BIT_0))
++#define SAMPLE_RATE_MASK          ((1 << SR_BIT_2) | (1 << SR_BIT_1) | (1 << SR_BIT_0))
++
++#define BIT_DEPTH_MASK_16         0
++#define BIT_DEPTH_MASK_24         (1 << BD_BIT_0)
++#define BIT_DEPTH_MASK_32         (1 << BD_BIT_1)
++#define BIT_DEPTH_MASK            ((1 << BD_BIT_1) | (1 << BD_BIT_0))
++
++#define MUTE_ACTIVE               0
++#define MUTE_NOT_ACTIVE           1
++
++#define HW_PARAMS_GPIO_COUNT      5
++
++static struct gpio_desc *mute_gpio;
++static struct gpio_desc *sdwn_gpio;
++static struct gpio_desc *hw_params_gpios[HW_PARAMS_GPIO_COUNT];
++static int current_width;
++static int current_rate;
++
++static void snd_rpi_chipdip_dac_gpio_array_set(int value);
++static void snd_rpi_chipdip_dac_gpio_set(struct gpio_desc *gpio_item, int value);
++
++static void snd_rpi_chipdip_dac_gpio_array_set(int value)
++{
++	int i = 0;
++
++	for (i = 0; i < HW_PARAMS_GPIO_COUNT; i++)
++		snd_rpi_chipdip_dac_gpio_set(hw_params_gpios[i], ((value >> i) & 1));
++}
++
++static void snd_rpi_chipdip_dac_gpio_set(struct gpio_desc *gpio_item, int value)
++{
++	if (gpio_item)
++		gpiod_set_value_cansleep(gpio_item, value);
++}
++
++static int snd_rpi_chipdip_dac_init(struct snd_soc_pcm_runtime *rtd)
++{
++	return 0;
++}
++
++static int snd_rpi_chipdip_dac_hw_params(struct snd_pcm_substream *substream,
++					 struct snd_pcm_hw_params *params)
++{
++	int ret = 0;
++	int gpio_change_pending = 0;
++	int sample_rate_state = 0;
++	int bit_depth_state = 0;
++	int param_value = params_width(params);
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++
++	ret = snd_soc_dai_set_bclk_ratio(asoc_rtd_to_cpu(rtd, 0), 2 * 32);
++
++	if (current_width != param_value) {
++		current_width = param_value;
++		gpio_change_pending = 1;
++
++		switch (param_value) {
++		case 16:
++			bit_depth_state = BIT_DEPTH_MASK_16;
++			break;
++		case 24:
++			bit_depth_state = BIT_DEPTH_MASK_24;
++			break;
++		case 32:
++			bit_depth_state = BIT_DEPTH_MASK_32;
++			break;
++		default:
++			return -EINVAL;
++		}
++	}
++
++	param_value = params_rate(params);
++	if (current_rate != param_value) {
++		current_rate = param_value;
++		gpio_change_pending = 1;
++
++		switch (param_value) {
++		case 44100:
++			sample_rate_state = SAMPLE_RATE_MASK_44_1;
++			break;
++		case 48000:
++			sample_rate_state = SAMPLE_RATE_MASK_48;
++			break;
++		case 88200:
++			sample_rate_state = SAMPLE_RATE_MASK_88_2;
++			break;
++		case 96000:
++			sample_rate_state = SAMPLE_RATE_MASK_96;
++			break;
++		case 176400:
++			sample_rate_state = SAMPLE_RATE_MASK_176_4;
++			break;
++		case 192000:
++			sample_rate_state = SAMPLE_RATE_MASK_192;
++			break;
++		default:
++			return -EINVAL;
++		}
++	}
++
++	if (gpio_change_pending) {
++		snd_rpi_chipdip_dac_gpio_set(mute_gpio, MUTE_ACTIVE);
++		snd_rpi_chipdip_dac_gpio_array_set(bit_depth_state | sample_rate_state);
++		msleep(300);
++		snd_rpi_chipdip_dac_gpio_set(mute_gpio, MUTE_NOT_ACTIVE);
++	}
++
++	return ret;
++}
++
++static int snd_rpi_chipdip_dac_startup(struct snd_pcm_substream *substream)
++{
++	return 0;
++}
++
++static void snd_rpi_chipdip_dac_shutdown(struct snd_pcm_substream *substream)
++{
++
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_chipdip_dac_ops = {
++	.hw_params = snd_rpi_chipdip_dac_hw_params,
++	.startup = snd_rpi_chipdip_dac_startup,
++	.shutdown = snd_rpi_chipdip_dac_shutdown,
++};
++
++SND_SOC_DAILINK_DEFS(hifi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("spdif-transmitter", "dit-hifi")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
++
++static struct snd_soc_dai_link snd_rpi_chipdip_dac_dai[] = {
++{
++	.name		= "ChipDip DAC",
++	.stream_name	= "ChipDip DAC HiFi",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBM_CFM,
++	.ops		= &snd_rpi_chipdip_dac_ops,
++	.init		= snd_rpi_chipdip_dac_init,
++	SND_SOC_DAILINK_REG(hifi),
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_chipdip_dac = {
++	.name         = "ChipDipDAC",
++	.driver_name  = "ChipdipDac",
++	.owner        = THIS_MODULE,
++	.dai_link     = snd_rpi_chipdip_dac_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_chipdip_dac_dai),
++};
++
++static int snd_rpi_chipdip_dac_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++	int i = 0;
++
++	snd_rpi_chipdip_dac.dev = &pdev->dev;
++
++	if (pdev->dev.of_node) {
++		struct device_node *i2s_node;
++		struct snd_soc_dai_link *dai = &snd_rpi_chipdip_dac_dai[0];
++		i2s_node = of_parse_phandle(pdev->dev.of_node,
++					"i2s-controller", 0);
++
++		if (i2s_node) {
++			dai->cpus->dai_name = NULL;
++			dai->cpus->of_node = i2s_node;
++			dai->platforms->name = NULL;
++			dai->platforms->of_node = i2s_node;
++		}
++	}
++
++	hw_params_gpios[SR_BIT_0] = devm_gpiod_get_optional(&pdev->dev, "sr0", GPIOD_OUT_LOW);
++	hw_params_gpios[SR_BIT_1] = devm_gpiod_get_optional(&pdev->dev, "sr1", GPIOD_OUT_LOW);
++	hw_params_gpios[SR_BIT_2] = devm_gpiod_get_optional(&pdev->dev, "sr2", GPIOD_OUT_LOW);
++	hw_params_gpios[BD_BIT_0] = devm_gpiod_get_optional(&pdev->dev, "res0", GPIOD_OUT_LOW);
++	hw_params_gpios[BD_BIT_1] = devm_gpiod_get_optional(&pdev->dev, "res1", GPIOD_OUT_LOW);
++	mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute", GPIOD_OUT_LOW);
++	sdwn_gpio = devm_gpiod_get_optional(&pdev->dev, "sdwn", GPIOD_OUT_HIGH);
++
++	for (i = 0; i < HW_PARAMS_GPIO_COUNT; i++) {
++		if (IS_ERR(hw_params_gpios[i])) {
++			ret = PTR_ERR(hw_params_gpios[i]);
++			dev_err(&pdev->dev, "failed to get hw_params gpio: %d\n", ret);
++			return ret;
++		}
++	}
++
++	if (IS_ERR(mute_gpio)) {
++		ret = PTR_ERR(mute_gpio);
++		dev_err(&pdev->dev, "failed to get mute gpio: %d\n", ret);
++		return ret;
++	}
++
++	if (IS_ERR(sdwn_gpio)) {
++		ret = PTR_ERR(sdwn_gpio);
++		dev_err(&pdev->dev, "failed to get sdwn gpio: %d\n", ret);
++		return ret;
++	}
++
++	snd_rpi_chipdip_dac_gpio_set(sdwn_gpio, 1);
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_chipdip_dac);
++	if (ret && ret != -EPROBE_DEFER)
++		dev_err(&pdev->dev,
++			"snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static const struct of_device_id snd_rpi_chipdip_dac_of_match[] = {
++	{ .compatible = "chipdip,chipdip-dac", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_chipdip_dac_of_match);
++
++static struct platform_driver snd_rpi_chipdip_dac_driver = {
++	.driver = {
++		.name   = "snd-rpi-chipdip-dac",
++		.owner  = THIS_MODULE,
++		.of_match_table = snd_rpi_chipdip_dac_of_match,
++	},
++	.probe          = snd_rpi_chipdip_dac_probe,
++};
++
++module_platform_driver(snd_rpi_chipdip_dac_driver);
++
++MODULE_AUTHOR("Evgenij Sapunov <evgenij.sapunov@chipdip.ru>");
++MODULE_DESCRIPTION("ASoC Driver for ChipDip DAC");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0457-media-i2c-imx290-Add-fwnode-properties-controls.patch b/target/linux/bcm27xx/patches-5.15/950-0457-media-i2c-imx290-Add-fwnode-properties-controls.patch
new file mode 100644
index 0000000000..ec249d35fb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0457-media-i2c-imx290-Add-fwnode-properties-controls.patch
@@ -0,0 +1,48 @@
+From 500db93808fcfa78292fe877f5120186f32df841 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 3 Aug 2021 11:25:59 +0100
+Subject: [PATCH] media: i2c: imx290: Add fwnode properties controls
+
+Add call to v4l2_ctrl_new_fwnode_properties to read and
+create the fwnode based controls.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -1239,6 +1239,7 @@ static const struct of_device_id imx290_
+ 
+ static int imx290_probe(struct i2c_client *client)
+ {
++	struct v4l2_fwnode_device_properties props;
+ 	struct device *dev = &client->dev;
+ 	struct fwnode_handle *endpoint;
+ 	/* Only CSI2 is supported for now: */
+@@ -1360,7 +1361,7 @@ static int imx290_probe(struct i2c_clien
+ 	 */
+ 	imx290_entity_init_cfg(&imx290->sd, NULL);
+ 
+-	v4l2_ctrl_handler_init(&imx290->ctrls, 9);
++	v4l2_ctrl_handler_init(&imx290->ctrls, 11);
+ 
+ 	v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+ 			  V4L2_CID_ANALOGUE_GAIN, 0, 100, 1, 0);
+@@ -1408,6 +1409,15 @@ static int imx290_probe(struct i2c_clien
+ 				     ARRAY_SIZE(imx290_test_pattern_menu) - 1,
+ 				     0, 0, imx290_test_pattern_menu);
+ 
++	ret = v4l2_fwnode_device_parse(&client->dev, &props);
++	if (ret)
++		goto free_ctrl;
++
++	ret = v4l2_ctrl_new_fwnode_properties(&imx290->ctrls, &imx290_ctrl_ops,
++					      &props);
++	if (ret)
++		goto free_ctrl;
++
+ 	imx290->sd.ctrl_handler = &imx290->ctrls;
+ 
+ 	if (imx290->ctrls.error) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0458-media-i2c-ov9281-Add-fwnode-properties-controls.patch b/target/linux/bcm27xx/patches-5.15/950-0458-media-i2c-ov9281-Add-fwnode-properties-controls.patch
new file mode 100644
index 0000000000..57660ab8c6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0458-media-i2c-ov9281-Add-fwnode-properties-controls.patch
@@ -0,0 +1,56 @@
+From dfaa98b5db1b6ec5f73b18f997cf18c18099d571 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 3 Aug 2021 11:30:58 +0100
+Subject: [PATCH] media: i2c: ov9281: Add fwnode properties controls
+
+Add call to v4l2_ctrl_new_fwnode_properties to read and
+create the fwnode based controls.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 13 ++++++++++++-
+ 1 file changed, 12 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -25,6 +25,7 @@
+ #include <media/media-entity.h>
+ #include <media/v4l2-async.h>
+ #include <media/v4l2-ctrls.h>
++#include <media/v4l2-fwnode.h>
+ #include <media/v4l2-subdev.h>
+ 
+ #define OV9281_LINK_FREQ_400MHZ		400000000
+@@ -1023,6 +1024,7 @@ static const struct v4l2_ctrl_ops ov9281
+ 
+ static int ov9281_initialize_controls(struct ov9281 *ov9281)
+ {
++	struct v4l2_fwnode_device_properties props;
+ 	const struct ov9281_mode *mode;
+ 	struct v4l2_ctrl_handler *handler;
+ 	struct v4l2_ctrl *ctrl;
+@@ -1032,7 +1034,7 @@ static int ov9281_initialize_controls(st
+ 
+ 	handler = &ov9281->ctrl_handler;
+ 	mode = ov9281->cur_mode;
+-	ret = v4l2_ctrl_handler_init(handler, 9);
++	ret = v4l2_ctrl_handler_init(handler, 11);
+ 	if (ret)
+ 		return ret;
+ 	handler->lock = &ov9281->mutex;
+@@ -1094,6 +1096,15 @@ static int ov9281_initialize_controls(st
+ 		goto err_free_handler;
+ 	}
+ 
++	ret = v4l2_fwnode_device_parse(&ov9281->client->dev, &props);
++	if (ret)
++		goto err_free_handler;
++
++	ret = v4l2_ctrl_new_fwnode_properties(handler, &ov9281_ctrl_ops,
++					      &props);
++	if (ret)
++		goto err_free_handler;
++
+ 	ov9281->subdev.ctrl_handler = handler;
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0459-media-i2c-ov7251-Add-fwnode-properties-controls.patch b/target/linux/bcm27xx/patches-5.15/950-0459-media-i2c-ov7251-Add-fwnode-properties-controls.patch
new file mode 100644
index 0000000000..3d6e21d695
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0459-media-i2c-ov7251-Add-fwnode-properties-controls.patch
@@ -0,0 +1,48 @@
+From 5aab08f11efaa42a97a9c046c956a16c331dd067 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 3 Aug 2021 11:33:33 +0100
+Subject: [PATCH] media: i2c: ov7251: Add fwnode properties controls
+
+Add call to v4l2_ctrl_new_fwnode_properties to read and
+create the fwnode based controls.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -1256,6 +1256,7 @@ static const struct v4l2_subdev_ops ov72
+ 
+ static int ov7251_probe(struct i2c_client *client)
+ {
++	struct v4l2_fwnode_device_properties props;
+ 	struct device *dev = &client->dev;
+ 	struct fwnode_handle *endpoint;
+ 	struct ov7251 *ov7251;
+@@ -1341,7 +1342,7 @@ static int ov7251_probe(struct i2c_clien
+ 
+ 	mutex_init(&ov7251->lock);
+ 
+-	v4l2_ctrl_handler_init(&ov7251->ctrls, 7);
++	v4l2_ctrl_handler_init(&ov7251->ctrls, 9);
+ 	ov7251->ctrls.lock = &ov7251->lock;
+ 
+ 	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
+@@ -1377,6 +1378,15 @@ static int ov7251_probe(struct i2c_clien
+ 		goto free_ctrl;
+ 	}
+ 
++	ret = v4l2_fwnode_device_parse(&client->dev, &props);
++	if (ret)
++		goto free_ctrl;
++
++	ret = v4l2_ctrl_new_fwnode_properties(&ov7251->ctrls, &ov7251_ctrl_ops,
++					      &props);
++	if (ret)
++		goto free_ctrl;
++
+ 	v4l2_i2c_subdev_init(&ov7251->sd, client, &ov7251_subdev_ops);
+ 	ov7251->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ 	ov7251->pad.flags = MEDIA_PAD_FL_SOURCE;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0460-media-v4l2-Remove-v4l2-ctrls.c.patch b/target/linux/bcm27xx/patches-5.15/950-0460-media-v4l2-Remove-v4l2-ctrls.c.patch
new file mode 100644
index 0000000000..8a1c24f6cd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0460-media-v4l2-Remove-v4l2-ctrls.c.patch
@@ -0,0 +1,5064 @@
+From 95280e5163ea457ccb442bc9d6c003c803d13894 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Fri, 6 Aug 2021 10:47:11 +0100
+Subject: [PATCH] media: v4l2: Remove v4l2-ctrls.c
+
+v4l2-ctrls.c has been split into 4 files v4l2-ctrls-*.c, the original
+is redundant, confusing and probably should have been removed by a
+previous patch.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/media/v4l2-core/v4l2-ctrls.c | 5046 --------------------------
+ 1 file changed, 5046 deletions(-)
+ delete mode 100644 drivers/media/v4l2-core/v4l2-ctrls.c
+
+--- a/drivers/media/v4l2-core/v4l2-ctrls.c
++++ /dev/null
+@@ -1,5046 +0,0 @@
+-// SPDX-License-Identifier: GPL-2.0-or-later
+-/*
+-    V4L2 controls framework implementation.
+-
+-    Copyright (C) 2010  Hans Verkuil <hverkuil@xs4all.nl>
+-
+- */
+-
+-#define pr_fmt(fmt) "v4l2-ctrls: " fmt
+-
+-#include <linux/ctype.h>
+-#include <linux/export.h>
+-#include <linux/mm.h>
+-#include <linux/slab.h>
+-#include <media/v4l2-ctrls.h>
+-#include <media/v4l2-dev.h>
+-#include <media/v4l2-device.h>
+-#include <media/v4l2-event.h>
+-#include <media/v4l2-fwnode.h>
+-#include <media/v4l2-ioctl.h>
+-
+-#define dprintk(vdev, fmt, arg...) do {					\
+-	if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \
+-		printk(KERN_DEBUG pr_fmt("%s: %s: " fmt),		\
+-		       __func__, video_device_node_name(vdev), ##arg);	\
+-} while (0)
+-
+-#define has_op(master, op) \
+-	(master->ops && master->ops->op)
+-#define call_op(master, op) \
+-	(has_op(master, op) ? master->ops->op(master) : 0)
+-
+-static const union v4l2_ctrl_ptr ptr_null;
+-
+-/* Internal temporary helper struct, one for each v4l2_ext_control */
+-struct v4l2_ctrl_helper {
+-	/* Pointer to the control reference of the master control */
+-	struct v4l2_ctrl_ref *mref;
+-	/* The control ref corresponding to the v4l2_ext_control ID field. */
+-	struct v4l2_ctrl_ref *ref;
+-	/* v4l2_ext_control index of the next control belonging to the
+-	   same cluster, or 0 if there isn't any. */
+-	u32 next;
+-};
+-
+-/* Small helper function to determine if the autocluster is set to manual
+-   mode. */
+-static bool is_cur_manual(const struct v4l2_ctrl *master)
+-{
+-	return master->is_auto && master->cur.val == master->manual_mode_value;
+-}
+-
+-/* Same as above, but this checks the against the new value instead of the
+-   current value. */
+-static bool is_new_manual(const struct v4l2_ctrl *master)
+-{
+-	return master->is_auto && master->val == master->manual_mode_value;
+-}
+-
+-/* Returns NULL or a character pointer array containing the menu for
+-   the given control ID. The pointer array ends with a NULL pointer.
+-   An empty string signifies a menu entry that is invalid. This allows
+-   drivers to disable certain options if it is not supported. */
+-const char * const *v4l2_ctrl_get_menu(u32 id)
+-{
+-	static const char * const mpeg_audio_sampling_freq[] = {
+-		"44.1 kHz",
+-		"48 kHz",
+-		"32 kHz",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_encoding[] = {
+-		"MPEG-1/2 Layer I",
+-		"MPEG-1/2 Layer II",
+-		"MPEG-1/2 Layer III",
+-		"MPEG-2/4 AAC",
+-		"AC-3",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_l1_bitrate[] = {
+-		"32 kbps",
+-		"64 kbps",
+-		"96 kbps",
+-		"128 kbps",
+-		"160 kbps",
+-		"192 kbps",
+-		"224 kbps",
+-		"256 kbps",
+-		"288 kbps",
+-		"320 kbps",
+-		"352 kbps",
+-		"384 kbps",
+-		"416 kbps",
+-		"448 kbps",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_l2_bitrate[] = {
+-		"32 kbps",
+-		"48 kbps",
+-		"56 kbps",
+-		"64 kbps",
+-		"80 kbps",
+-		"96 kbps",
+-		"112 kbps",
+-		"128 kbps",
+-		"160 kbps",
+-		"192 kbps",
+-		"224 kbps",
+-		"256 kbps",
+-		"320 kbps",
+-		"384 kbps",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_l3_bitrate[] = {
+-		"32 kbps",
+-		"40 kbps",
+-		"48 kbps",
+-		"56 kbps",
+-		"64 kbps",
+-		"80 kbps",
+-		"96 kbps",
+-		"112 kbps",
+-		"128 kbps",
+-		"160 kbps",
+-		"192 kbps",
+-		"224 kbps",
+-		"256 kbps",
+-		"320 kbps",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_ac3_bitrate[] = {
+-		"32 kbps",
+-		"40 kbps",
+-		"48 kbps",
+-		"56 kbps",
+-		"64 kbps",
+-		"80 kbps",
+-		"96 kbps",
+-		"112 kbps",
+-		"128 kbps",
+-		"160 kbps",
+-		"192 kbps",
+-		"224 kbps",
+-		"256 kbps",
+-		"320 kbps",
+-		"384 kbps",
+-		"448 kbps",
+-		"512 kbps",
+-		"576 kbps",
+-		"640 kbps",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_mode[] = {
+-		"Stereo",
+-		"Joint Stereo",
+-		"Dual",
+-		"Mono",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_mode_extension[] = {
+-		"Bound 4",
+-		"Bound 8",
+-		"Bound 12",
+-		"Bound 16",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_emphasis[] = {
+-		"No Emphasis",
+-		"50/15 us",
+-		"CCITT J17",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_crc[] = {
+-		"No CRC",
+-		"16-bit CRC",
+-		NULL
+-	};
+-	static const char * const mpeg_audio_dec_playback[] = {
+-		"Auto",
+-		"Stereo",
+-		"Left",
+-		"Right",
+-		"Mono",
+-		"Swapped Stereo",
+-		NULL
+-	};
+-	static const char * const mpeg_video_encoding[] = {
+-		"MPEG-1",
+-		"MPEG-2",
+-		"MPEG-4 AVC",
+-		NULL
+-	};
+-	static const char * const mpeg_video_aspect[] = {
+-		"1x1",
+-		"4x3",
+-		"16x9",
+-		"2.21x1",
+-		NULL
+-	};
+-	static const char * const mpeg_video_bitrate_mode[] = {
+-		"Variable Bitrate",
+-		"Constant Bitrate",
+-		"Constant Quality",
+-		NULL
+-	};
+-	static const char * const mpeg_stream_type[] = {
+-		"MPEG-2 Program Stream",
+-		"MPEG-2 Transport Stream",
+-		"MPEG-1 System Stream",
+-		"MPEG-2 DVD-compatible Stream",
+-		"MPEG-1 VCD-compatible Stream",
+-		"MPEG-2 SVCD-compatible Stream",
+-		NULL
+-	};
+-	static const char * const mpeg_stream_vbi_fmt[] = {
+-		"No VBI",
+-		"Private Packet, IVTV Format",
+-		NULL
+-	};
+-	static const char * const camera_power_line_frequency[] = {
+-		"Disabled",
+-		"50 Hz",
+-		"60 Hz",
+-		"Auto",
+-		NULL
+-	};
+-	static const char * const camera_exposure_auto[] = {
+-		"Auto Mode",
+-		"Manual Mode",
+-		"Shutter Priority Mode",
+-		"Aperture Priority Mode",
+-		NULL
+-	};
+-	static const char * const camera_exposure_metering[] = {
+-		"Average",
+-		"Center Weighted",
+-		"Spot",
+-		"Matrix",
+-		NULL
+-	};
+-	static const char * const camera_auto_focus_range[] = {
+-		"Auto",
+-		"Normal",
+-		"Macro",
+-		"Infinity",
+-		NULL
+-	};
+-	static const char * const colorfx[] = {
+-		"None",
+-		"Black & White",
+-		"Sepia",
+-		"Negative",
+-		"Emboss",
+-		"Sketch",
+-		"Sky Blue",
+-		"Grass Green",
+-		"Skin Whiten",
+-		"Vivid",
+-		"Aqua",
+-		"Art Freeze",
+-		"Silhouette",
+-		"Solarization",
+-		"Antique",
+-		"Set Cb/Cr",
+-		NULL
+-	};
+-	static const char * const auto_n_preset_white_balance[] = {
+-		"Manual",
+-		"Auto",
+-		"Incandescent",
+-		"Fluorescent",
+-		"Fluorescent H",
+-		"Horizon",
+-		"Daylight",
+-		"Flash",
+-		"Cloudy",
+-		"Shade",
+-		"Greyworld",
+-		NULL,
+-	};
+-	static const char * const camera_iso_sensitivity_auto[] = {
+-		"Manual",
+-		"Auto",
+-		NULL
+-	};
+-	static const char * const scene_mode[] = {
+-		"None",
+-		"Backlight",
+-		"Beach/Snow",
+-		"Candle Light",
+-		"Dusk/Dawn",
+-		"Fall Colors",
+-		"Fireworks",
+-		"Landscape",
+-		"Night",
+-		"Party/Indoor",
+-		"Portrait",
+-		"Sports",
+-		"Sunset",
+-		"Text",
+-		NULL
+-	};
+-	static const char * const tune_emphasis[] = {
+-		"None",
+-		"50 Microseconds",
+-		"75 Microseconds",
+-		NULL,
+-	};
+-	static const char * const header_mode[] = {
+-		"Separate Buffer",
+-		"Joined With 1st Frame",
+-		NULL,
+-	};
+-	static const char * const multi_slice[] = {
+-		"Single",
+-		"Max Macroblocks",
+-		"Max Bytes",
+-		NULL,
+-	};
+-	static const char * const entropy_mode[] = {
+-		"CAVLC",
+-		"CABAC",
+-		NULL,
+-	};
+-	static const char * const mpeg_h264_level[] = {
+-		"1",
+-		"1b",
+-		"1.1",
+-		"1.2",
+-		"1.3",
+-		"2",
+-		"2.1",
+-		"2.2",
+-		"3",
+-		"3.1",
+-		"3.2",
+-		"4",
+-		"4.1",
+-		"4.2",
+-		"5",
+-		"5.1",
+-		"5.2",
+-		"6.0",
+-		"6.1",
+-		"6.2",
+-		NULL,
+-	};
+-	static const char * const h264_loop_filter[] = {
+-		"Enabled",
+-		"Disabled",
+-		"Disabled at Slice Boundary",
+-		NULL,
+-	};
+-	static const char * const h264_profile[] = {
+-		"Baseline",
+-		"Constrained Baseline",
+-		"Main",
+-		"Extended",
+-		"High",
+-		"High 10",
+-		"High 422",
+-		"High 444 Predictive",
+-		"High 10 Intra",
+-		"High 422 Intra",
+-		"High 444 Intra",
+-		"CAVLC 444 Intra",
+-		"Scalable Baseline",
+-		"Scalable High",
+-		"Scalable High Intra",
+-		"Stereo High",
+-		"Multiview High",
+-		"Constrained High",
+-		NULL,
+-	};
+-	static const char * const vui_sar_idc[] = {
+-		"Unspecified",
+-		"1:1",
+-		"12:11",
+-		"10:11",
+-		"16:11",
+-		"40:33",
+-		"24:11",
+-		"20:11",
+-		"32:11",
+-		"80:33",
+-		"18:11",
+-		"15:11",
+-		"64:33",
+-		"160:99",
+-		"4:3",
+-		"3:2",
+-		"2:1",
+-		"Extended SAR",
+-		NULL,
+-	};
+-	static const char * const h264_fp_arrangement_type[] = {
+-		"Checkerboard",
+-		"Column",
+-		"Row",
+-		"Side by Side",
+-		"Top Bottom",
+-		"Temporal",
+-		NULL,
+-	};
+-	static const char * const h264_fmo_map_type[] = {
+-		"Interleaved Slices",
+-		"Scattered Slices",
+-		"Foreground with Leftover",
+-		"Box Out",
+-		"Raster Scan",
+-		"Wipe Scan",
+-		"Explicit",
+-		NULL,
+-	};
+-	static const char * const h264_decode_mode[] = {
+-		"Slice-Based",
+-		"Frame-Based",
+-		NULL,
+-	};
+-	static const char * const h264_start_code[] = {
+-		"No Start Code",
+-		"Annex B Start Code",
+-		NULL,
+-	};
+-	static const char * const h264_hierarchical_coding_type[] = {
+-		"Hier Coding B",
+-		"Hier Coding P",
+-		NULL,
+-	};
+-	static const char * const mpeg_mpeg2_level[] = {
+-		"Low",
+-		"Main",
+-		"High 1440",
+-		"High",
+-		NULL,
+-	};
+-	static const char * const mpeg2_profile[] = {
+-		"Simple",
+-		"Main",
+-		"SNR Scalable",
+-		"Spatially Scalable",
+-		"High",
+-		NULL,
+-	};
+-	static const char * const mpeg_mpeg4_level[] = {
+-		"0",
+-		"0b",
+-		"1",
+-		"2",
+-		"3",
+-		"3b",
+-		"4",
+-		"5",
+-		NULL,
+-	};
+-	static const char * const mpeg4_profile[] = {
+-		"Simple",
+-		"Advanced Simple",
+-		"Core",
+-		"Simple Scalable",
+-		"Advanced Coding Efficiency",
+-		NULL,
+-	};
+-
+-	static const char * const vpx_golden_frame_sel[] = {
+-		"Use Previous Frame",
+-		"Use Previous Specific Frame",
+-		NULL,
+-	};
+-	static const char * const vp8_profile[] = {
+-		"0",
+-		"1",
+-		"2",
+-		"3",
+-		NULL,
+-	};
+-	static const char * const vp9_profile[] = {
+-		"0",
+-		"1",
+-		"2",
+-		"3",
+-		NULL,
+-	};
+-	static const char * const vp9_level[] = {
+-		"1",
+-		"1.1",
+-		"2",
+-		"2.1",
+-		"3",
+-		"3.1",
+-		"4",
+-		"4.1",
+-		"5",
+-		"5.1",
+-		"5.2",
+-		"6",
+-		"6.1",
+-		"6.2",
+-		NULL,
+-	};
+-
+-	static const char * const flash_led_mode[] = {
+-		"Off",
+-		"Flash",
+-		"Torch",
+-		NULL,
+-	};
+-	static const char * const flash_strobe_source[] = {
+-		"Software",
+-		"External",
+-		NULL,
+-	};
+-
+-	static const char * const jpeg_chroma_subsampling[] = {
+-		"4:4:4",
+-		"4:2:2",
+-		"4:2:0",
+-		"4:1:1",
+-		"4:1:0",
+-		"Gray",
+-		NULL,
+-	};
+-	static const char * const dv_tx_mode[] = {
+-		"DVI-D",
+-		"HDMI",
+-		NULL,
+-	};
+-	static const char * const dv_rgb_range[] = {
+-		"Automatic",
+-		"RGB Limited Range (16-235)",
+-		"RGB Full Range (0-255)",
+-		NULL,
+-	};
+-	static const char * const dv_it_content_type[] = {
+-		"Graphics",
+-		"Photo",
+-		"Cinema",
+-		"Game",
+-		"No IT Content",
+-		NULL,
+-	};
+-	static const char * const detect_md_mode[] = {
+-		"Disabled",
+-		"Global",
+-		"Threshold Grid",
+-		"Region Grid",
+-		NULL,
+-	};
+-
+-	static const char * const hevc_profile[] = {
+-		"Main",
+-		"Main Still Picture",
+-		"Main 10",
+-		NULL,
+-	};
+-	static const char * const hevc_level[] = {
+-		"1",
+-		"2",
+-		"2.1",
+-		"3",
+-		"3.1",
+-		"4",
+-		"4.1",
+-		"5",
+-		"5.1",
+-		"5.2",
+-		"6",
+-		"6.1",
+-		"6.2",
+-		NULL,
+-	};
+-	static const char * const hevc_hierarchial_coding_type[] = {
+-		"B",
+-		"P",
+-		NULL,
+-	};
+-	static const char * const hevc_refresh_type[] = {
+-		"None",
+-		"CRA",
+-		"IDR",
+-		NULL,
+-	};
+-	static const char * const hevc_size_of_length_field[] = {
+-		"0",
+-		"1",
+-		"2",
+-		"4",
+-		NULL,
+-	};
+-	static const char * const hevc_tier[] = {
+-		"Main",
+-		"High",
+-		NULL,
+-	};
+-	static const char * const hevc_loop_filter_mode[] = {
+-		"Disabled",
+-		"Enabled",
+-		"Disabled at slice boundary",
+-		"NULL",
+-	};
+-	static const char * const hevc_decode_mode[] = {
+-		"Slice-Based",
+-		"Frame-Based",
+-		NULL,
+-	};
+-	static const char * const hevc_start_code[] = {
+-		"No Start Code",
+-		"Annex B Start Code",
+-		NULL,
+-	};
+-	static const char * const camera_orientation[] = {
+-		"Front",
+-		"Back",
+-		"External",
+-		NULL,
+-	};
+-	static const char * const mpeg_video_frame_skip[] = {
+-		"Disabled",
+-		"Level Limit",
+-		"VBV/CPB Limit",
+-		NULL,
+-	};
+-
+-	switch (id) {
+-	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+-		return mpeg_audio_sampling_freq;
+-	case V4L2_CID_MPEG_AUDIO_ENCODING:
+-		return mpeg_audio_encoding;
+-	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
+-		return mpeg_audio_l1_bitrate;
+-	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+-		return mpeg_audio_l2_bitrate;
+-	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
+-		return mpeg_audio_l3_bitrate;
+-	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+-		return mpeg_audio_ac3_bitrate;
+-	case V4L2_CID_MPEG_AUDIO_MODE:
+-		return mpeg_audio_mode;
+-	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
+-		return mpeg_audio_mode_extension;
+-	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
+-		return mpeg_audio_emphasis;
+-	case V4L2_CID_MPEG_AUDIO_CRC:
+-		return mpeg_audio_crc;
+-	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
+-	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
+-		return mpeg_audio_dec_playback;
+-	case V4L2_CID_MPEG_VIDEO_ENCODING:
+-		return mpeg_video_encoding;
+-	case V4L2_CID_MPEG_VIDEO_ASPECT:
+-		return mpeg_video_aspect;
+-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+-		return mpeg_video_bitrate_mode;
+-	case V4L2_CID_MPEG_STREAM_TYPE:
+-		return mpeg_stream_type;
+-	case V4L2_CID_MPEG_STREAM_VBI_FMT:
+-		return mpeg_stream_vbi_fmt;
+-	case V4L2_CID_POWER_LINE_FREQUENCY:
+-		return camera_power_line_frequency;
+-	case V4L2_CID_EXPOSURE_AUTO:
+-		return camera_exposure_auto;
+-	case V4L2_CID_EXPOSURE_METERING:
+-		return camera_exposure_metering;
+-	case V4L2_CID_AUTO_FOCUS_RANGE:
+-		return camera_auto_focus_range;
+-	case V4L2_CID_COLORFX:
+-		return colorfx;
+-	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
+-		return auto_n_preset_white_balance;
+-	case V4L2_CID_ISO_SENSITIVITY_AUTO:
+-		return camera_iso_sensitivity_auto;
+-	case V4L2_CID_SCENE_MODE:
+-		return scene_mode;
+-	case V4L2_CID_TUNE_PREEMPHASIS:
+-		return tune_emphasis;
+-	case V4L2_CID_TUNE_DEEMPHASIS:
+-		return tune_emphasis;
+-	case V4L2_CID_FLASH_LED_MODE:
+-		return flash_led_mode;
+-	case V4L2_CID_FLASH_STROBE_SOURCE:
+-		return flash_strobe_source;
+-	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
+-		return header_mode;
+-	case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
+-		return mpeg_video_frame_skip;
+-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
+-		return multi_slice;
+-	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
+-		return entropy_mode;
+-	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
+-		return mpeg_h264_level;
+-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
+-		return h264_loop_filter;
+-	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
+-		return h264_profile;
+-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
+-		return vui_sar_idc;
+-	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
+-		return h264_fp_arrangement_type;
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
+-		return h264_fmo_map_type;
+-	case V4L2_CID_STATELESS_H264_DECODE_MODE:
+-		return h264_decode_mode;
+-	case V4L2_CID_STATELESS_H264_START_CODE:
+-		return h264_start_code;
+-	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:
+-		return h264_hierarchical_coding_type;
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
+-		return mpeg_mpeg2_level;
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
+-		return mpeg2_profile;
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
+-		return mpeg_mpeg4_level;
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
+-		return mpeg4_profile;
+-	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
+-		return vpx_golden_frame_sel;
+-	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
+-		return vp8_profile;
+-	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
+-		return vp9_profile;
+-	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
+-		return vp9_level;
+-	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
+-		return jpeg_chroma_subsampling;
+-	case V4L2_CID_DV_TX_MODE:
+-		return dv_tx_mode;
+-	case V4L2_CID_DV_TX_RGB_RANGE:
+-	case V4L2_CID_DV_RX_RGB_RANGE:
+-		return dv_rgb_range;
+-	case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
+-	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
+-		return dv_it_content_type;
+-	case V4L2_CID_DETECT_MD_MODE:
+-		return detect_md_mode;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
+-		return hevc_profile;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
+-		return hevc_level;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
+-		return hevc_hierarchial_coding_type;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
+-		return hevc_refresh_type;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
+-		return hevc_size_of_length_field;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
+-		return hevc_tier;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
+-		return hevc_loop_filter_mode;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
+-		return hevc_decode_mode;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
+-		return hevc_start_code;
+-	case V4L2_CID_CAMERA_ORIENTATION:
+-		return camera_orientation;
+-	default:
+-		return NULL;
+-	}
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_get_menu);
+-
+-#define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); arr; })
+-/*
+- * Returns NULL or an s64 type array containing the menu for given
+- * control ID. The total number of the menu items is returned in @len.
+- */
+-const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len)
+-{
+-	static const s64 qmenu_int_vpx_num_partitions[] = {
+-		1, 2, 4, 8,
+-	};
+-
+-	static const s64 qmenu_int_vpx_num_ref_frames[] = {
+-		1, 2, 3,
+-	};
+-
+-	switch (id) {
+-	case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
+-		return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len);
+-	case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
+-		return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len);
+-	default:
+-		*len = 0;
+-		return NULL;
+-	}
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_get_int_menu);
+-
+-/* Return the control name. */
+-const char *v4l2_ctrl_get_name(u32 id)
+-{
+-	switch (id) {
+-	/* USER controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_USER_CLASS:		return "User Controls";
+-	case V4L2_CID_BRIGHTNESS:		return "Brightness";
+-	case V4L2_CID_CONTRAST:			return "Contrast";
+-	case V4L2_CID_SATURATION:		return "Saturation";
+-	case V4L2_CID_HUE:			return "Hue";
+-	case V4L2_CID_AUDIO_VOLUME:		return "Volume";
+-	case V4L2_CID_AUDIO_BALANCE:		return "Balance";
+-	case V4L2_CID_AUDIO_BASS:		return "Bass";
+-	case V4L2_CID_AUDIO_TREBLE:		return "Treble";
+-	case V4L2_CID_AUDIO_MUTE:		return "Mute";
+-	case V4L2_CID_AUDIO_LOUDNESS:		return "Loudness";
+-	case V4L2_CID_BLACK_LEVEL:		return "Black Level";
+-	case V4L2_CID_AUTO_WHITE_BALANCE:	return "White Balance, Automatic";
+-	case V4L2_CID_DO_WHITE_BALANCE:		return "Do White Balance";
+-	case V4L2_CID_RED_BALANCE:		return "Red Balance";
+-	case V4L2_CID_BLUE_BALANCE:		return "Blue Balance";
+-	case V4L2_CID_GAMMA:			return "Gamma";
+-	case V4L2_CID_EXPOSURE:			return "Exposure";
+-	case V4L2_CID_AUTOGAIN:			return "Gain, Automatic";
+-	case V4L2_CID_GAIN:			return "Gain";
+-	case V4L2_CID_HFLIP:			return "Horizontal Flip";
+-	case V4L2_CID_VFLIP:			return "Vertical Flip";
+-	case V4L2_CID_POWER_LINE_FREQUENCY:	return "Power Line Frequency";
+-	case V4L2_CID_HUE_AUTO:			return "Hue, Automatic";
+-	case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature";
+-	case V4L2_CID_SHARPNESS:		return "Sharpness";
+-	case V4L2_CID_BACKLIGHT_COMPENSATION:	return "Backlight Compensation";
+-	case V4L2_CID_CHROMA_AGC:		return "Chroma AGC";
+-	case V4L2_CID_COLOR_KILLER:		return "Color Killer";
+-	case V4L2_CID_COLORFX:			return "Color Effects";
+-	case V4L2_CID_AUTOBRIGHTNESS:		return "Brightness, Automatic";
+-	case V4L2_CID_BAND_STOP_FILTER:		return "Band-Stop Filter";
+-	case V4L2_CID_ROTATE:			return "Rotate";
+-	case V4L2_CID_BG_COLOR:			return "Background Color";
+-	case V4L2_CID_CHROMA_GAIN:		return "Chroma Gain";
+-	case V4L2_CID_ILLUMINATORS_1:		return "Illuminator 1";
+-	case V4L2_CID_ILLUMINATORS_2:		return "Illuminator 2";
+-	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:	return "Min Number of Capture Buffers";
+-	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:	return "Min Number of Output Buffers";
+-	case V4L2_CID_ALPHA_COMPONENT:		return "Alpha Component";
+-	case V4L2_CID_COLORFX_CBCR:		return "Color Effects, CbCr";
+-
+-	/* Codec controls */
+-	/* The MPEG controls are applicable to all codec controls
+-	 * and the 'MPEG' part of the define is historical */
+-	/* Keep the order of the 'case's the same as in videodev2.h! */
+-	case V4L2_CID_CODEC_CLASS:		return "Codec Controls";
+-	case V4L2_CID_MPEG_STREAM_TYPE:		return "Stream Type";
+-	case V4L2_CID_MPEG_STREAM_PID_PMT:	return "Stream PMT Program ID";
+-	case V4L2_CID_MPEG_STREAM_PID_AUDIO:	return "Stream Audio Program ID";
+-	case V4L2_CID_MPEG_STREAM_PID_VIDEO:	return "Stream Video Program ID";
+-	case V4L2_CID_MPEG_STREAM_PID_PCR:	return "Stream PCR Program ID";
+-	case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID";
+-	case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID";
+-	case V4L2_CID_MPEG_STREAM_VBI_FMT:	return "Stream VBI Format";
+-	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency";
+-	case V4L2_CID_MPEG_AUDIO_ENCODING:	return "Audio Encoding";
+-	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:	return "Audio Layer I Bitrate";
+-	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:	return "Audio Layer II Bitrate";
+-	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:	return "Audio Layer III Bitrate";
+-	case V4L2_CID_MPEG_AUDIO_MODE:		return "Audio Stereo Mode";
+-	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension";
+-	case V4L2_CID_MPEG_AUDIO_EMPHASIS:	return "Audio Emphasis";
+-	case V4L2_CID_MPEG_AUDIO_CRC:		return "Audio CRC";
+-	case V4L2_CID_MPEG_AUDIO_MUTE:		return "Audio Mute";
+-	case V4L2_CID_MPEG_AUDIO_AAC_BITRATE:	return "Audio AAC Bitrate";
+-	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:	return "Audio AC-3 Bitrate";
+-	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:	return "Audio Playback";
+-	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback";
+-	case V4L2_CID_MPEG_VIDEO_ENCODING:	return "Video Encoding";
+-	case V4L2_CID_MPEG_VIDEO_ASPECT:	return "Video Aspect";
+-	case V4L2_CID_MPEG_VIDEO_B_FRAMES:	return "Video B Frames";
+-	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:	return "Video GOP Size";
+-	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:	return "Video GOP Closure";
+-	case V4L2_CID_MPEG_VIDEO_PULLDOWN:	return "Video Pulldown";
+-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:	return "Video Bitrate Mode";
+-	case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY:	return "Constant Quality";
+-	case V4L2_CID_MPEG_VIDEO_BITRATE:	return "Video Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:	return "Video Peak Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation";
+-	case V4L2_CID_MPEG_VIDEO_MUTE:		return "Video Mute";
+-	case V4L2_CID_MPEG_VIDEO_MUTE_YUV:	return "Video Mute YUV";
+-	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:	return "Decoder Slice Interface";
+-	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:	return "MPEG4 Loop Filter Enable";
+-	case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:	return "Number of Intra Refresh MBs";
+-	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:		return "Frame Level Rate Control Enable";
+-	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:			return "H264 MB Level Rate Control";
+-	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:			return "Sequence Header Mode";
+-	case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC:			return "Max Number of Reference Pics";
+-	case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:		return "Frame Skip Mode";
+-	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:		return "Display Delay";
+-	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:	return "Display Delay Enable";
+-	case V4L2_CID_MPEG_VIDEO_AU_DELIMITER:			return "Generate Access Unit Delimiters";
+-	case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP:		return "H263 I-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP:		return "H263 P-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP:		return "H263 B-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H263_MIN_QP:			return "H263 Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H263_MAX_QP:			return "H263 Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:		return "H264 I-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:		return "H264 P-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP:		return "H264 B-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:			return "H264 Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:			return "H264 Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:		return "H264 8x8 Transform Enable";
+-	case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE:			return "H264 CPB Buffer Size";
+-	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:		return "H264 Entropy Mode";
+-	case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD:			return "H264 I-Frame Period";
+-	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:			return "H264 Level";
+-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:	return "H264 Loop Filter Alpha Offset";
+-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:		return "H264 Loop Filter Beta Offset";
+-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:		return "H264 Loop Filter Mode";
+-	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:			return "H264 Profile";
+-	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT:	return "Vertical Size of SAR";
+-	case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH:	return "Horizontal Size of SAR";
+-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:		return "Aspect Ratio VUI Enable";
+-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:		return "VUI Aspect Ratio IDC";
+-	case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING:	return "H264 Enable Frame Packing SEI";
+-	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0:	return "H264 Set Curr. Frame as Frame0";
+-	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:	return "H264 FP Arrangement Type";
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO:			return "H264 Flexible MB Ordering";
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:		return "H264 Map Type for FMO";
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP:		return "H264 FMO Number of Slice Groups";
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION:	return "H264 FMO Direction of Change";
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE:		return "H264 FMO Size of 1st Slice Grp";
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH:		return "H264 FMO No. of Consecutive MBs";
+-	case V4L2_CID_MPEG_VIDEO_H264_ASO:			return "H264 Arbitrary Slice Ordering";
+-	case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER:		return "H264 ASO Slice Order";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING:	return "Enable H264 Hierarchical Coding";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:	return "H264 Hierarchical Coding Type";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP:
+-								return "H264 Set QP Value for HC Layers";
+-	case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
+-								return "H264 Constrained Intra Pred";
+-	case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:	return "H264 Chroma QP Index Offset";
+-	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MIN_QP:		return "H264 I-Frame Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP:		return "H264 I-Frame Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP:		return "H264 P-Frame Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP:		return "H264 P-Frame Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP:		return "H264 B-Frame Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP:		return "H264 B-Frame Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR:	return "H264 Hierarchical Lay 0 Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR:	return "H264 Hierarchical Lay 1 Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR:	return "H264 Hierarchical Lay 2 Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR:	return "H264 Hierarchical Lay 3 Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR:	return "H264 Hierarchical Lay 4 Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR:	return "H264 Hierarchical Lay 5 Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR:	return "H264 Hierarchical Lay 6 Bitrate";
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:			return "MPEG2 Level";
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:			return "MPEG2 Profile";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:		return "MPEG4 I-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:		return "MPEG4 P-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP:		return "MPEG4 B-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP:			return "MPEG4 Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP:			return "MPEG4 Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:			return "MPEG4 Level";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:			return "MPEG4 Profile";
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:			return "Quarter Pixel Search Enable";
+-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:		return "Maximum Bytes in a Slice";
+-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:		return "Number of MBs in a Slice";
+-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:		return "Slice Partitioning Method";
+-	case V4L2_CID_MPEG_VIDEO_VBV_SIZE:			return "VBV Buffer Size";
+-	case V4L2_CID_MPEG_VIDEO_DEC_PTS:			return "Video Decoder PTS";
+-	case V4L2_CID_MPEG_VIDEO_DEC_FRAME:			return "Video Decoder Frame Count";
+-	case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR:		return "Video Decoder Conceal Color";
+-	case V4L2_CID_MPEG_VIDEO_VBV_DELAY:			return "Initial Delay for VBV Control";
+-	case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:		return "Horizontal MV Search Range";
+-	case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:		return "Vertical MV Search Range";
+-	case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:		return "Repeat Sequence Header";
+-	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:		return "Force Key Frame";
+-	case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID:		return "Base Layer Priority ID";
+-	case V4L2_CID_MPEG_VIDEO_LTR_COUNT:			return "LTR Count";
+-	case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:		return "Frame LTR Index";
+-	case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:		return "Use LTR Frames";
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS:		return "MPEG-2 Slice Parameters";
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION:		return "MPEG-2 Quantization Matrices";
+-	case V4L2_CID_FWHT_I_FRAME_QP:				return "FWHT I-Frame QP Value";
+-	case V4L2_CID_FWHT_P_FRAME_QP:				return "FWHT P-Frame QP Value";
+-
+-	/* VPX controls */
+-	case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:		return "VPX Number of Partitions";
+-	case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4:		return "VPX Intra Mode Decision Disable";
+-	case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:		return "VPX No. of Refs for P Frame";
+-	case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL:		return "VPX Loop Filter Level Range";
+-	case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS:		return "VPX Deblocking Effect Control";
+-	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD:	return "VPX Golden Frame Refresh Period";
+-	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:		return "VPX Golden Frame Indicator";
+-	case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP:			return "VPX Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP:			return "VPX Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP:		return "VPX I-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP:		return "VPX P-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:			return "VP8 Profile";
+-	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:			return "VP9 Profile";
+-	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:			return "VP9 Level";
+-
+-	/* HEVC controls */
+-	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP:		return "HEVC I-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP:		return "HEVC P-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP:		return "HEVC B-Frame QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP:			return "HEVC Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP:			return "HEVC Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP:		return "HEVC I-Frame Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP:		return "HEVC I-Frame Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP:		return "HEVC P-Frame Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP:		return "HEVC P-Frame Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP:		return "HEVC B-Frame Minimum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP:		return "HEVC B-Frame Maximum QP Value";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:			return "HEVC Profile";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:			return "HEVC Level";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_TIER:			return "HEVC Tier";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION:	return "HEVC Frame Rate Resolution";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH:	return "HEVC Maximum Coding Unit Depth";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:		return "HEVC Refresh Type";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED:		return "HEVC Constant Intra Prediction";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU:		return "HEVC Lossless Encoding";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT:		return "HEVC Wavefront";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:		return "HEVC Loop Filter";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP:			return "HEVC QP Values";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:		return "HEVC Hierarchical Coding Type";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER:	return "HEVC Hierarchical Coding Layer";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_QP:	return "HEVC Hierarchical Layer 0 QP";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_QP:	return "HEVC Hierarchical Layer 1 QP";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_QP:	return "HEVC Hierarchical Layer 2 QP";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_QP:	return "HEVC Hierarchical Layer 3 QP";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_QP:	return "HEVC Hierarchical Layer 4 QP";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_QP:	return "HEVC Hierarchical Layer 5 QP";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_QP:	return "HEVC Hierarchical Layer 6 QP";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_BR:	return "HEVC Hierarchical Lay 0 BitRate";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_BR:	return "HEVC Hierarchical Lay 1 BitRate";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_BR:	return "HEVC Hierarchical Lay 2 BitRate";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_BR:	return "HEVC Hierarchical Lay 3 BitRate";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_BR:	return "HEVC Hierarchical Lay 4 BitRate";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_BR:	return "HEVC Hierarchical Lay 5 BitRate";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR:	return "HEVC Hierarchical Lay 6 BitRate";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB:		return "HEVC General PB";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID:		return "HEVC Temporal ID";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING:		return "HEVC Strong Intra Smoothing";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT:		return "HEVC Intra PU Split";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION:		return "HEVC TMV Prediction";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1:	return "HEVC Max Num of Candidate MVs";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE:	return "HEVC ENC Without Startcode";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD:		return "HEVC Num of I-Frame b/w 2 IDR";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2:	return "HEVC Loop Filter Beta Offset";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2:	return "HEVC Loop Filter TC Offset";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:	return "HEVC Size of Length Field";
+-	case V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES:	return "Reference Frames for a P-Frame";
+-	case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR:		return "Prepend SPS and PPS to IDR";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:			return "HEVC Sequence Parameter Set";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:			return "HEVC Picture Parameter Set";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:		return "HEVC Slice Parameters";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX:		return "HEVC Scaling Matrix";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:		return "HEVC Decode Mode";
+-	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:		return "HEVC Start Code";
+-
+-	/* CAMERA controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_CAMERA_CLASS:		return "Camera Controls";
+-	case V4L2_CID_EXPOSURE_AUTO:		return "Auto Exposure";
+-	case V4L2_CID_EXPOSURE_ABSOLUTE:	return "Exposure Time, Absolute";
+-	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:	return "Exposure, Dynamic Framerate";
+-	case V4L2_CID_PAN_RELATIVE:		return "Pan, Relative";
+-	case V4L2_CID_TILT_RELATIVE:		return "Tilt, Relative";
+-	case V4L2_CID_PAN_RESET:		return "Pan, Reset";
+-	case V4L2_CID_TILT_RESET:		return "Tilt, Reset";
+-	case V4L2_CID_PAN_ABSOLUTE:		return "Pan, Absolute";
+-	case V4L2_CID_TILT_ABSOLUTE:		return "Tilt, Absolute";
+-	case V4L2_CID_FOCUS_ABSOLUTE:		return "Focus, Absolute";
+-	case V4L2_CID_FOCUS_RELATIVE:		return "Focus, Relative";
+-	case V4L2_CID_FOCUS_AUTO:		return "Focus, Automatic Continuous";
+-	case V4L2_CID_ZOOM_ABSOLUTE:		return "Zoom, Absolute";
+-	case V4L2_CID_ZOOM_RELATIVE:		return "Zoom, Relative";
+-	case V4L2_CID_ZOOM_CONTINUOUS:		return "Zoom, Continuous";
+-	case V4L2_CID_PRIVACY:			return "Privacy";
+-	case V4L2_CID_IRIS_ABSOLUTE:		return "Iris, Absolute";
+-	case V4L2_CID_IRIS_RELATIVE:		return "Iris, Relative";
+-	case V4L2_CID_AUTO_EXPOSURE_BIAS:	return "Auto Exposure, Bias";
+-	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset";
+-	case V4L2_CID_WIDE_DYNAMIC_RANGE:	return "Wide Dynamic Range";
+-	case V4L2_CID_IMAGE_STABILIZATION:	return "Image Stabilization";
+-	case V4L2_CID_ISO_SENSITIVITY:		return "ISO Sensitivity";
+-	case V4L2_CID_ISO_SENSITIVITY_AUTO:	return "ISO Sensitivity, Auto";
+-	case V4L2_CID_EXPOSURE_METERING:	return "Exposure, Metering Mode";
+-	case V4L2_CID_SCENE_MODE:		return "Scene Mode";
+-	case V4L2_CID_3A_LOCK:			return "3A Lock";
+-	case V4L2_CID_AUTO_FOCUS_START:		return "Auto Focus, Start";
+-	case V4L2_CID_AUTO_FOCUS_STOP:		return "Auto Focus, Stop";
+-	case V4L2_CID_AUTO_FOCUS_STATUS:	return "Auto Focus, Status";
+-	case V4L2_CID_AUTO_FOCUS_RANGE:		return "Auto Focus, Range";
+-	case V4L2_CID_PAN_SPEED:		return "Pan, Speed";
+-	case V4L2_CID_TILT_SPEED:		return "Tilt, Speed";
+-	case V4L2_CID_UNIT_CELL_SIZE:		return "Unit Cell Size";
+-	case V4L2_CID_CAMERA_ORIENTATION:	return "Camera Orientation";
+-	case V4L2_CID_CAMERA_SENSOR_ROTATION:	return "Camera Sensor Rotation";
+-
+-	/* FM Radio Modulator controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_FM_TX_CLASS:		return "FM Radio Modulator Controls";
+-	case V4L2_CID_RDS_TX_DEVIATION:		return "RDS Signal Deviation";
+-	case V4L2_CID_RDS_TX_PI:		return "RDS Program ID";
+-	case V4L2_CID_RDS_TX_PTY:		return "RDS Program Type";
+-	case V4L2_CID_RDS_TX_PS_NAME:		return "RDS PS Name";
+-	case V4L2_CID_RDS_TX_RADIO_TEXT:	return "RDS Radio Text";
+-	case V4L2_CID_RDS_TX_MONO_STEREO:	return "RDS Stereo";
+-	case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:	return "RDS Artificial Head";
+-	case V4L2_CID_RDS_TX_COMPRESSED:	return "RDS Compressed";
+-	case V4L2_CID_RDS_TX_DYNAMIC_PTY:	return "RDS Dynamic PTY";
+-	case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
+-	case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:	return "RDS Traffic Program";
+-	case V4L2_CID_RDS_TX_MUSIC_SPEECH:	return "RDS Music";
+-	case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:	return "RDS Enable Alt Frequencies";
+-	case V4L2_CID_RDS_TX_ALT_FREQS:		return "RDS Alternate Frequencies";
+-	case V4L2_CID_AUDIO_LIMITER_ENABLED:	return "Audio Limiter Feature Enabled";
+-	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";
+-	case V4L2_CID_AUDIO_LIMITER_DEVIATION:	return "Audio Limiter Deviation";
+-	case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled";
+-	case V4L2_CID_AUDIO_COMPRESSION_GAIN:	return "Audio Compression Gain";
+-	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";
+-	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";
+-	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time";
+-	case V4L2_CID_PILOT_TONE_ENABLED:	return "Pilot Tone Feature Enabled";
+-	case V4L2_CID_PILOT_TONE_DEVIATION:	return "Pilot Tone Deviation";
+-	case V4L2_CID_PILOT_TONE_FREQUENCY:	return "Pilot Tone Frequency";
+-	case V4L2_CID_TUNE_PREEMPHASIS:		return "Pre-Emphasis";
+-	case V4L2_CID_TUNE_POWER_LEVEL:		return "Tune Power Level";
+-	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:	return "Tune Antenna Capacitor";
+-
+-	/* Flash controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_FLASH_CLASS:		return "Flash Controls";
+-	case V4L2_CID_FLASH_LED_MODE:		return "LED Mode";
+-	case V4L2_CID_FLASH_STROBE_SOURCE:	return "Strobe Source";
+-	case V4L2_CID_FLASH_STROBE:		return "Strobe";
+-	case V4L2_CID_FLASH_STROBE_STOP:	return "Stop Strobe";
+-	case V4L2_CID_FLASH_STROBE_STATUS:	return "Strobe Status";
+-	case V4L2_CID_FLASH_TIMEOUT:		return "Strobe Timeout";
+-	case V4L2_CID_FLASH_INTENSITY:		return "Intensity, Flash Mode";
+-	case V4L2_CID_FLASH_TORCH_INTENSITY:	return "Intensity, Torch Mode";
+-	case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator";
+-	case V4L2_CID_FLASH_FAULT:		return "Faults";
+-	case V4L2_CID_FLASH_CHARGE:		return "Charge";
+-	case V4L2_CID_FLASH_READY:		return "Ready to Strobe";
+-
+-	/* JPEG encoder controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_JPEG_CLASS:		return "JPEG Compression Controls";
+-	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:	return "Chroma Subsampling";
+-	case V4L2_CID_JPEG_RESTART_INTERVAL:	return "Restart Interval";
+-	case V4L2_CID_JPEG_COMPRESSION_QUALITY:	return "Compression Quality";
+-	case V4L2_CID_JPEG_ACTIVE_MARKER:	return "Active Markers";
+-
+-	/* Image source controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_IMAGE_SOURCE_CLASS:	return "Image Source Controls";
+-	case V4L2_CID_VBLANK:			return "Vertical Blanking";
+-	case V4L2_CID_HBLANK:			return "Horizontal Blanking";
+-	case V4L2_CID_ANALOGUE_GAIN:		return "Analogue Gain";
+-	case V4L2_CID_TEST_PATTERN_RED:		return "Red Pixel Value";
+-	case V4L2_CID_TEST_PATTERN_GREENR:	return "Green (Red) Pixel Value";
+-	case V4L2_CID_TEST_PATTERN_BLUE:	return "Blue Pixel Value";
+-	case V4L2_CID_TEST_PATTERN_GREENB:	return "Green (Blue) Pixel Value";
+-
+-	/* Image processing controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_IMAGE_PROC_CLASS:		return "Image Processing Controls";
+-	case V4L2_CID_LINK_FREQ:		return "Link Frequency";
+-	case V4L2_CID_PIXEL_RATE:		return "Pixel Rate";
+-	case V4L2_CID_TEST_PATTERN:		return "Test Pattern";
+-	case V4L2_CID_DEINTERLACING_MODE:	return "Deinterlacing Mode";
+-	case V4L2_CID_DIGITAL_GAIN:		return "Digital Gain";
+-
+-	/* DV controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_DV_CLASS:			return "Digital Video Controls";
+-	case V4L2_CID_DV_TX_HOTPLUG:		return "Hotplug Present";
+-	case V4L2_CID_DV_TX_RXSENSE:		return "RxSense Present";
+-	case V4L2_CID_DV_TX_EDID_PRESENT:	return "EDID Present";
+-	case V4L2_CID_DV_TX_MODE:		return "Transmit Mode";
+-	case V4L2_CID_DV_TX_RGB_RANGE:		return "Tx RGB Quantization Range";
+-	case V4L2_CID_DV_TX_IT_CONTENT_TYPE:	return "Tx IT Content Type";
+-	case V4L2_CID_DV_RX_POWER_PRESENT:	return "Power Present";
+-	case V4L2_CID_DV_RX_RGB_RANGE:		return "Rx RGB Quantization Range";
+-	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:	return "Rx IT Content Type";
+-
+-	case V4L2_CID_FM_RX_CLASS:		return "FM Radio Receiver Controls";
+-	case V4L2_CID_TUNE_DEEMPHASIS:		return "De-Emphasis";
+-	case V4L2_CID_RDS_RECEPTION:		return "RDS Reception";
+-	case V4L2_CID_RF_TUNER_CLASS:		return "RF Tuner Controls";
+-	case V4L2_CID_RF_TUNER_RF_GAIN:		return "RF Gain";
+-	case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:	return "LNA Gain, Auto";
+-	case V4L2_CID_RF_TUNER_LNA_GAIN:	return "LNA Gain";
+-	case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:	return "Mixer Gain, Auto";
+-	case V4L2_CID_RF_TUNER_MIXER_GAIN:	return "Mixer Gain";
+-	case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:	return "IF Gain, Auto";
+-	case V4L2_CID_RF_TUNER_IF_GAIN:		return "IF Gain";
+-	case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:	return "Bandwidth, Auto";
+-	case V4L2_CID_RF_TUNER_BANDWIDTH:	return "Bandwidth";
+-	case V4L2_CID_RF_TUNER_PLL_LOCK:	return "PLL Lock";
+-	case V4L2_CID_RDS_RX_PTY:		return "RDS Program Type";
+-	case V4L2_CID_RDS_RX_PS_NAME:		return "RDS PS Name";
+-	case V4L2_CID_RDS_RX_RADIO_TEXT:	return "RDS Radio Text";
+-	case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
+-	case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:	return "RDS Traffic Program";
+-	case V4L2_CID_RDS_RX_MUSIC_SPEECH:	return "RDS Music";
+-
+-	/* Detection controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_DETECT_CLASS:		return "Detection Controls";
+-	case V4L2_CID_DETECT_MD_MODE:		return "Motion Detection Mode";
+-	case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: return "MD Global Threshold";
+-	case V4L2_CID_DETECT_MD_THRESHOLD_GRID:	return "MD Threshold Grid";
+-	case V4L2_CID_DETECT_MD_REGION_GRID:	return "MD Region Grid";
+-
+-	/* Stateless Codec controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_CODEC_STATELESS_CLASS:	return "Stateless Codec Controls";
+-	case V4L2_CID_STATELESS_H264_DECODE_MODE:		return "H264 Decode Mode";
+-	case V4L2_CID_STATELESS_H264_START_CODE:		return "H264 Start Code";
+-	case V4L2_CID_STATELESS_H264_SPS:			return "H264 Sequence Parameter Set";
+-	case V4L2_CID_STATELESS_H264_PPS:			return "H264 Picture Parameter Set";
+-	case V4L2_CID_STATELESS_H264_SCALING_MATRIX:		return "H264 Scaling Matrix";
+-	case V4L2_CID_STATELESS_H264_PRED_WEIGHTS:		return "H264 Prediction Weight Table";
+-	case V4L2_CID_STATELESS_H264_SLICE_PARAMS:		return "H264 Slice Parameters";
+-	case V4L2_CID_STATELESS_H264_DECODE_PARAMS:		return "H264 Decode Parameters";
+-	case V4L2_CID_STATELESS_FWHT_PARAMS:			return "FWHT Stateless Parameters";
+-	case V4L2_CID_STATELESS_VP8_FRAME:			return "VP8 Frame Parameters";
+-
+-	/* Colorimetry controls */
+-	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+-	case V4L2_CID_COLORIMETRY_CLASS:	return "Colorimetry Controls";
+-	case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO:		return "HDR10 Content Light Info";
+-	case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:	return "HDR10 Mastering Display";
+-	default:
+-		return NULL;
+-	}
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_get_name);
+-
+-void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
+-		    s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags)
+-{
+-	*name = v4l2_ctrl_get_name(id);
+-	*flags = 0;
+-
+-	switch (id) {
+-	case V4L2_CID_AUDIO_MUTE:
+-	case V4L2_CID_AUDIO_LOUDNESS:
+-	case V4L2_CID_AUTO_WHITE_BALANCE:
+-	case V4L2_CID_AUTOGAIN:
+-	case V4L2_CID_HFLIP:
+-	case V4L2_CID_VFLIP:
+-	case V4L2_CID_HUE_AUTO:
+-	case V4L2_CID_CHROMA_AGC:
+-	case V4L2_CID_COLOR_KILLER:
+-	case V4L2_CID_AUTOBRIGHTNESS:
+-	case V4L2_CID_MPEG_AUDIO_MUTE:
+-	case V4L2_CID_MPEG_VIDEO_MUTE:
+-	case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
+-	case V4L2_CID_MPEG_VIDEO_PULLDOWN:
+-	case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
+-	case V4L2_CID_FOCUS_AUTO:
+-	case V4L2_CID_PRIVACY:
+-	case V4L2_CID_AUDIO_LIMITER_ENABLED:
+-	case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
+-	case V4L2_CID_PILOT_TONE_ENABLED:
+-	case V4L2_CID_ILLUMINATORS_1:
+-	case V4L2_CID_ILLUMINATORS_2:
+-	case V4L2_CID_FLASH_STROBE_STATUS:
+-	case V4L2_CID_FLASH_CHARGE:
+-	case V4L2_CID_FLASH_READY:
+-	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
+-	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:
+-	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:
+-	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
+-	case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
+-	case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
+-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:
+-	case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:
+-	case V4L2_CID_MPEG_VIDEO_AU_DELIMITER:
+-	case V4L2_CID_WIDE_DYNAMIC_RANGE:
+-	case V4L2_CID_IMAGE_STABILIZATION:
+-	case V4L2_CID_RDS_RECEPTION:
+-	case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
+-	case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
+-	case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
+-	case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
+-	case V4L2_CID_RF_TUNER_PLL_LOCK:
+-	case V4L2_CID_RDS_TX_MONO_STEREO:
+-	case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:
+-	case V4L2_CID_RDS_TX_COMPRESSED:
+-	case V4L2_CID_RDS_TX_DYNAMIC_PTY:
+-	case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT:
+-	case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:
+-	case V4L2_CID_RDS_TX_MUSIC_SPEECH:
+-	case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:
+-	case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
+-	case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
+-	case V4L2_CID_RDS_RX_MUSIC_SPEECH:
+-		*type = V4L2_CTRL_TYPE_BOOLEAN;
+-		*min = 0;
+-		*max = *step = 1;
+-		break;
+-	case V4L2_CID_ROTATE:
+-		*type = V4L2_CTRL_TYPE_INTEGER;
+-		*flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:
+-	case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:
+-	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:
+-		*type = V4L2_CTRL_TYPE_INTEGER;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_LTR_COUNT:
+-		*type = V4L2_CTRL_TYPE_INTEGER;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:
+-		*type = V4L2_CTRL_TYPE_INTEGER;
+-		*flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:
+-		*type = V4L2_CTRL_TYPE_BITMASK;
+-		*flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
+-	case V4L2_CID_PAN_RESET:
+-	case V4L2_CID_TILT_RESET:
+-	case V4L2_CID_FLASH_STROBE:
+-	case V4L2_CID_FLASH_STROBE_STOP:
+-	case V4L2_CID_AUTO_FOCUS_START:
+-	case V4L2_CID_AUTO_FOCUS_STOP:
+-	case V4L2_CID_DO_WHITE_BALANCE:
+-		*type = V4L2_CTRL_TYPE_BUTTON;
+-		*flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
+-			  V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+-		*min = *max = *step = *def = 0;
+-		break;
+-	case V4L2_CID_POWER_LINE_FREQUENCY:
+-	case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+-	case V4L2_CID_MPEG_AUDIO_ENCODING:
+-	case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
+-	case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+-	case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
+-	case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+-	case V4L2_CID_MPEG_AUDIO_MODE:
+-	case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
+-	case V4L2_CID_MPEG_AUDIO_EMPHASIS:
+-	case V4L2_CID_MPEG_AUDIO_CRC:
+-	case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
+-	case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
+-	case V4L2_CID_MPEG_VIDEO_ENCODING:
+-	case V4L2_CID_MPEG_VIDEO_ASPECT:
+-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+-	case V4L2_CID_MPEG_STREAM_TYPE:
+-	case V4L2_CID_MPEG_STREAM_VBI_FMT:
+-	case V4L2_CID_EXPOSURE_AUTO:
+-	case V4L2_CID_AUTO_FOCUS_RANGE:
+-	case V4L2_CID_COLORFX:
+-	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
+-	case V4L2_CID_TUNE_PREEMPHASIS:
+-	case V4L2_CID_FLASH_LED_MODE:
+-	case V4L2_CID_FLASH_STROBE_SOURCE:
+-	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
+-	case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
+-	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
+-	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
+-	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
+-	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
+-	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
+-	case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
+-	case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
+-	case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
+-	case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
+-	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
+-	case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
+-	case V4L2_CID_ISO_SENSITIVITY_AUTO:
+-	case V4L2_CID_EXPOSURE_METERING:
+-	case V4L2_CID_SCENE_MODE:
+-	case V4L2_CID_DV_TX_MODE:
+-	case V4L2_CID_DV_TX_RGB_RANGE:
+-	case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
+-	case V4L2_CID_DV_RX_RGB_RANGE:
+-	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
+-	case V4L2_CID_TEST_PATTERN:
+-	case V4L2_CID_DEINTERLACING_MODE:
+-	case V4L2_CID_TUNE_DEEMPHASIS:
+-	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
+-	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
+-	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
+-	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
+-	case V4L2_CID_DETECT_MD_MODE:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
+-	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
+-	case V4L2_CID_STATELESS_H264_DECODE_MODE:
+-	case V4L2_CID_STATELESS_H264_START_CODE:
+-	case V4L2_CID_CAMERA_ORIENTATION:
+-		*type = V4L2_CTRL_TYPE_MENU;
+-		break;
+-	case V4L2_CID_LINK_FREQ:
+-		*type = V4L2_CTRL_TYPE_INTEGER_MENU;
+-		break;
+-	case V4L2_CID_RDS_TX_PS_NAME:
+-	case V4L2_CID_RDS_TX_RADIO_TEXT:
+-	case V4L2_CID_RDS_RX_PS_NAME:
+-	case V4L2_CID_RDS_RX_RADIO_TEXT:
+-		*type = V4L2_CTRL_TYPE_STRING;
+-		break;
+-	case V4L2_CID_ISO_SENSITIVITY:
+-	case V4L2_CID_AUTO_EXPOSURE_BIAS:
+-	case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
+-	case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
+-		*type = V4L2_CTRL_TYPE_INTEGER_MENU;
+-		break;
+-	case V4L2_CID_USER_CLASS:
+-	case V4L2_CID_CAMERA_CLASS:
+-	case V4L2_CID_CODEC_CLASS:
+-	case V4L2_CID_FM_TX_CLASS:
+-	case V4L2_CID_FLASH_CLASS:
+-	case V4L2_CID_JPEG_CLASS:
+-	case V4L2_CID_IMAGE_SOURCE_CLASS:
+-	case V4L2_CID_IMAGE_PROC_CLASS:
+-	case V4L2_CID_DV_CLASS:
+-	case V4L2_CID_FM_RX_CLASS:
+-	case V4L2_CID_RF_TUNER_CLASS:
+-	case V4L2_CID_DETECT_CLASS:
+-	case V4L2_CID_CODEC_STATELESS_CLASS:
+-	case V4L2_CID_COLORIMETRY_CLASS:
+-		*type = V4L2_CTRL_TYPE_CTRL_CLASS;
+-		/* You can neither read nor write these */
+-		*flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
+-		*min = *max = *step = *def = 0;
+-		break;
+-	case V4L2_CID_BG_COLOR:
+-		*type = V4L2_CTRL_TYPE_INTEGER;
+-		*step = 1;
+-		*min = 0;
+-		/* Max is calculated as RGB888 that is 2^24 */
+-		*max = 0xFFFFFF;
+-		break;
+-	case V4L2_CID_FLASH_FAULT:
+-	case V4L2_CID_JPEG_ACTIVE_MARKER:
+-	case V4L2_CID_3A_LOCK:
+-	case V4L2_CID_AUTO_FOCUS_STATUS:
+-	case V4L2_CID_DV_TX_HOTPLUG:
+-	case V4L2_CID_DV_TX_RXSENSE:
+-	case V4L2_CID_DV_TX_EDID_PRESENT:
+-	case V4L2_CID_DV_RX_POWER_PRESENT:
+-		*type = V4L2_CTRL_TYPE_BITMASK;
+-		break;
+-	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
+-	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
+-		*type = V4L2_CTRL_TYPE_INTEGER;
+-		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_DEC_PTS:
+-		*type = V4L2_CTRL_TYPE_INTEGER64;
+-		*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
+-		*min = *def = 0;
+-		*max = 0x1ffffffffLL;
+-		*step = 1;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_DEC_FRAME:
+-		*type = V4L2_CTRL_TYPE_INTEGER64;
+-		*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
+-		*min = *def = 0;
+-		*max = 0x7fffffffffffffffLL;
+-		*step = 1;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR:
+-		*type = V4L2_CTRL_TYPE_INTEGER64;
+-		*min = 0;
+-		/* default for 8 bit black, luma is 16, chroma is 128 */
+-		*def = 0x8000800010LL;
+-		*max = 0xffffffffffffLL;
+-		*step = 1;
+-		break;
+-	case V4L2_CID_PIXEL_RATE:
+-		*type = V4L2_CTRL_TYPE_INTEGER64;
+-		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
+-		break;
+-	case V4L2_CID_DETECT_MD_REGION_GRID:
+-		*type = V4L2_CTRL_TYPE_U8;
+-		break;
+-	case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
+-		*type = V4L2_CTRL_TYPE_U16;
+-		break;
+-	case V4L2_CID_RDS_TX_ALT_FREQS:
+-		*type = V4L2_CTRL_TYPE_U32;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS:
+-		*type = V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION:
+-		*type = V4L2_CTRL_TYPE_MPEG2_QUANTIZATION;
+-		break;
+-	case V4L2_CID_STATELESS_FWHT_PARAMS:
+-		*type = V4L2_CTRL_TYPE_FWHT_PARAMS;
+-		break;
+-	case V4L2_CID_STATELESS_H264_SPS:
+-		*type = V4L2_CTRL_TYPE_H264_SPS;
+-		break;
+-	case V4L2_CID_STATELESS_H264_PPS:
+-		*type = V4L2_CTRL_TYPE_H264_PPS;
+-		break;
+-	case V4L2_CID_STATELESS_H264_SCALING_MATRIX:
+-		*type = V4L2_CTRL_TYPE_H264_SCALING_MATRIX;
+-		break;
+-	case V4L2_CID_STATELESS_H264_SLICE_PARAMS:
+-		*type = V4L2_CTRL_TYPE_H264_SLICE_PARAMS;
+-		break;
+-	case V4L2_CID_STATELESS_H264_DECODE_PARAMS:
+-		*type = V4L2_CTRL_TYPE_H264_DECODE_PARAMS;
+-		break;
+-	case V4L2_CID_STATELESS_H264_PRED_WEIGHTS:
+-		*type = V4L2_CTRL_TYPE_H264_PRED_WEIGHTS;
+-		break;
+-	case V4L2_CID_STATELESS_VP8_FRAME:
+-		*type = V4L2_CTRL_TYPE_VP8_FRAME;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:
+-		*type = V4L2_CTRL_TYPE_HEVC_SPS;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:
+-		*type = V4L2_CTRL_TYPE_HEVC_PPS;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
+-		*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
+-		break;
+-	case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX:
+-		*type = V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX;
+-		break;
+-	case V4L2_CID_UNIT_CELL_SIZE:
+-		*type = V4L2_CTRL_TYPE_AREA;
+-		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
+-		break;
+-	case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO:
+-		*type = V4L2_CTRL_TYPE_HDR10_CLL_INFO;
+-		break;
+-	case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:
+-		*type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY;
+-		break;
+-	default:
+-		*type = V4L2_CTRL_TYPE_INTEGER;
+-		break;
+-	}
+-	switch (id) {
+-	case V4L2_CID_MPEG_AUDIO_ENCODING:
+-	case V4L2_CID_MPEG_AUDIO_MODE:
+-	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+-	case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+-	case V4L2_CID_MPEG_STREAM_TYPE:
+-		*flags |= V4L2_CTRL_FLAG_UPDATE;
+-		break;
+-	case V4L2_CID_AUDIO_VOLUME:
+-	case V4L2_CID_AUDIO_BALANCE:
+-	case V4L2_CID_AUDIO_BASS:
+-	case V4L2_CID_AUDIO_TREBLE:
+-	case V4L2_CID_BRIGHTNESS:
+-	case V4L2_CID_CONTRAST:
+-	case V4L2_CID_SATURATION:
+-	case V4L2_CID_HUE:
+-	case V4L2_CID_RED_BALANCE:
+-	case V4L2_CID_BLUE_BALANCE:
+-	case V4L2_CID_GAMMA:
+-	case V4L2_CID_SHARPNESS:
+-	case V4L2_CID_CHROMA_GAIN:
+-	case V4L2_CID_RDS_TX_DEVIATION:
+-	case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
+-	case V4L2_CID_AUDIO_LIMITER_DEVIATION:
+-	case V4L2_CID_AUDIO_COMPRESSION_GAIN:
+-	case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
+-	case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
+-	case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
+-	case V4L2_CID_PILOT_TONE_DEVIATION:
+-	case V4L2_CID_PILOT_TONE_FREQUENCY:
+-	case V4L2_CID_TUNE_POWER_LEVEL:
+-	case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+-	case V4L2_CID_RF_TUNER_RF_GAIN:
+-	case V4L2_CID_RF_TUNER_LNA_GAIN:
+-	case V4L2_CID_RF_TUNER_MIXER_GAIN:
+-	case V4L2_CID_RF_TUNER_IF_GAIN:
+-	case V4L2_CID_RF_TUNER_BANDWIDTH:
+-	case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
+-		*flags |= V4L2_CTRL_FLAG_SLIDER;
+-		break;
+-	case V4L2_CID_PAN_RELATIVE:
+-	case V4L2_CID_TILT_RELATIVE:
+-	case V4L2_CID_FOCUS_RELATIVE:
+-	case V4L2_CID_IRIS_RELATIVE:
+-	case V4L2_CID_ZOOM_RELATIVE:
+-		*flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
+-			  V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+-		break;
+-	case V4L2_CID_FLASH_STROBE_STATUS:
+-	case V4L2_CID_AUTO_FOCUS_STATUS:
+-	case V4L2_CID_FLASH_READY:
+-	case V4L2_CID_DV_TX_HOTPLUG:
+-	case V4L2_CID_DV_TX_RXSENSE:
+-	case V4L2_CID_DV_TX_EDID_PRESENT:
+-	case V4L2_CID_DV_RX_POWER_PRESENT:
+-	case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
+-	case V4L2_CID_RDS_RX_PTY:
+-	case V4L2_CID_RDS_RX_PS_NAME:
+-	case V4L2_CID_RDS_RX_RADIO_TEXT:
+-	case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
+-	case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
+-	case V4L2_CID_RDS_RX_MUSIC_SPEECH:
+-	case V4L2_CID_CAMERA_ORIENTATION:
+-	case V4L2_CID_CAMERA_SENSOR_ROTATION:
+-		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
+-		break;
+-	case V4L2_CID_RF_TUNER_PLL_LOCK:
+-		*flags |= V4L2_CTRL_FLAG_VOLATILE;
+-		break;
+-	}
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_fill);
+-
+-static u32 user_flags(const struct v4l2_ctrl *ctrl)
+-{
+-	u32 flags = ctrl->flags;
+-
+-	if (ctrl->is_ptr)
+-		flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
+-
+-	return flags;
+-}
+-
+-static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes)
+-{
+-	memset(ev, 0, sizeof(*ev));
+-	ev->type = V4L2_EVENT_CTRL;
+-	ev->id = ctrl->id;
+-	ev->u.ctrl.changes = changes;
+-	ev->u.ctrl.type = ctrl->type;
+-	ev->u.ctrl.flags = user_flags(ctrl);
+-	if (ctrl->is_ptr)
+-		ev->u.ctrl.value64 = 0;
+-	else
+-		ev->u.ctrl.value64 = *ctrl->p_cur.p_s64;
+-	ev->u.ctrl.minimum = ctrl->minimum;
+-	ev->u.ctrl.maximum = ctrl->maximum;
+-	if (ctrl->type == V4L2_CTRL_TYPE_MENU
+-	    || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
+-		ev->u.ctrl.step = 1;
+-	else
+-		ev->u.ctrl.step = ctrl->step;
+-	ev->u.ctrl.default_value = ctrl->default_value;
+-}
+-
+-static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes)
+-{
+-	struct v4l2_event ev;
+-	struct v4l2_subscribed_event *sev;
+-
+-	if (list_empty(&ctrl->ev_subs))
+-		return;
+-	fill_event(&ev, ctrl, changes);
+-
+-	list_for_each_entry(sev, &ctrl->ev_subs, node)
+-		if (sev->fh != fh ||
+-		    (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK))
+-			v4l2_event_queue_fh(sev->fh, &ev);
+-}
+-
+-static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
+-		      union v4l2_ctrl_ptr ptr1,
+-		      union v4l2_ctrl_ptr ptr2)
+-{
+-	switch (ctrl->type) {
+-	case V4L2_CTRL_TYPE_BUTTON:
+-		return false;
+-	case V4L2_CTRL_TYPE_STRING:
+-		idx *= ctrl->elem_size;
+-		/* strings are always 0-terminated */
+-		return !strcmp(ptr1.p_char + idx, ptr2.p_char + idx);
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		return ptr1.p_s64[idx] == ptr2.p_s64[idx];
+-	case V4L2_CTRL_TYPE_U8:
+-		return ptr1.p_u8[idx] == ptr2.p_u8[idx];
+-	case V4L2_CTRL_TYPE_U16:
+-		return ptr1.p_u16[idx] == ptr2.p_u16[idx];
+-	case V4L2_CTRL_TYPE_U32:
+-		return ptr1.p_u32[idx] == ptr2.p_u32[idx];
+-	default:
+-		if (ctrl->is_int)
+-			return ptr1.p_s32[idx] == ptr2.p_s32[idx];
+-		idx *= ctrl->elem_size;
+-		return !memcmp(ptr1.p_const + idx, ptr2.p_const + idx,
+-			       ctrl->elem_size);
+-	}
+-}
+-
+-static void std_init_compound(const struct v4l2_ctrl *ctrl, u32 idx,
+-			      union v4l2_ctrl_ptr ptr)
+-{
+-	struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
+-	struct v4l2_ctrl_vp8_frame *p_vp8_frame;
+-	struct v4l2_ctrl_fwht_params *p_fwht_params;
+-	void *p = ptr.p + idx * ctrl->elem_size;
+-
+-	if (ctrl->p_def.p_const)
+-		memcpy(p, ctrl->p_def.p_const, ctrl->elem_size);
+-	else
+-		memset(p, 0, ctrl->elem_size);
+-
+-	/*
+-	 * The cast is needed to get rid of a gcc warning complaining that
+-	 * V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS is not part of the
+-	 * v4l2_ctrl_type enum.
+-	 */
+-	switch ((u32)ctrl->type) {
+-	case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
+-		p_mpeg2_slice_params = p;
+-		/* 4:2:0 */
+-		p_mpeg2_slice_params->sequence.chroma_format = 1;
+-		/* interlaced top field */
+-		p_mpeg2_slice_params->picture.picture_structure = 1;
+-		p_mpeg2_slice_params->picture.picture_coding_type =
+-					V4L2_MPEG2_PICTURE_CODING_TYPE_I;
+-		break;
+-	case V4L2_CTRL_TYPE_VP8_FRAME:
+-		p_vp8_frame = p;
+-		p_vp8_frame->num_dct_parts = 1;
+-		break;
+-	case V4L2_CTRL_TYPE_FWHT_PARAMS:
+-		p_fwht_params = p;
+-		p_fwht_params->version = V4L2_FWHT_VERSION;
+-		p_fwht_params->width = 1280;
+-		p_fwht_params->height = 720;
+-		p_fwht_params->flags = V4L2_FWHT_FL_PIXENC_YUV |
+-			(2 << V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
+-		break;
+-	}
+-}
+-
+-static void std_init(const struct v4l2_ctrl *ctrl, u32 idx,
+-		     union v4l2_ctrl_ptr ptr)
+-{
+-	switch (ctrl->type) {
+-	case V4L2_CTRL_TYPE_STRING:
+-		idx *= ctrl->elem_size;
+-		memset(ptr.p_char + idx, ' ', ctrl->minimum);
+-		ptr.p_char[idx + ctrl->minimum] = '\0';
+-		break;
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		ptr.p_s64[idx] = ctrl->default_value;
+-		break;
+-	case V4L2_CTRL_TYPE_INTEGER:
+-	case V4L2_CTRL_TYPE_INTEGER_MENU:
+-	case V4L2_CTRL_TYPE_MENU:
+-	case V4L2_CTRL_TYPE_BITMASK:
+-	case V4L2_CTRL_TYPE_BOOLEAN:
+-		ptr.p_s32[idx] = ctrl->default_value;
+-		break;
+-	case V4L2_CTRL_TYPE_BUTTON:
+-	case V4L2_CTRL_TYPE_CTRL_CLASS:
+-		ptr.p_s32[idx] = 0;
+-		break;
+-	case V4L2_CTRL_TYPE_U8:
+-		ptr.p_u8[idx] = ctrl->default_value;
+-		break;
+-	case V4L2_CTRL_TYPE_U16:
+-		ptr.p_u16[idx] = ctrl->default_value;
+-		break;
+-	case V4L2_CTRL_TYPE_U32:
+-		ptr.p_u32[idx] = ctrl->default_value;
+-		break;
+-	default:
+-		std_init_compound(ctrl, idx, ptr);
+-		break;
+-	}
+-}
+-
+-static void std_log(const struct v4l2_ctrl *ctrl)
+-{
+-	union v4l2_ctrl_ptr ptr = ctrl->p_cur;
+-
+-	if (ctrl->is_array) {
+-		unsigned i;
+-
+-		for (i = 0; i < ctrl->nr_of_dims; i++)
+-			pr_cont("[%u]", ctrl->dims[i]);
+-		pr_cont(" ");
+-	}
+-
+-	switch (ctrl->type) {
+-	case V4L2_CTRL_TYPE_INTEGER:
+-		pr_cont("%d", *ptr.p_s32);
+-		break;
+-	case V4L2_CTRL_TYPE_BOOLEAN:
+-		pr_cont("%s", *ptr.p_s32 ? "true" : "false");
+-		break;
+-	case V4L2_CTRL_TYPE_MENU:
+-		pr_cont("%s", ctrl->qmenu[*ptr.p_s32]);
+-		break;
+-	case V4L2_CTRL_TYPE_INTEGER_MENU:
+-		pr_cont("%lld", ctrl->qmenu_int[*ptr.p_s32]);
+-		break;
+-	case V4L2_CTRL_TYPE_BITMASK:
+-		pr_cont("0x%08x", *ptr.p_s32);
+-		break;
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		pr_cont("%lld", *ptr.p_s64);
+-		break;
+-	case V4L2_CTRL_TYPE_STRING:
+-		pr_cont("%s", ptr.p_char);
+-		break;
+-	case V4L2_CTRL_TYPE_U8:
+-		pr_cont("%u", (unsigned)*ptr.p_u8);
+-		break;
+-	case V4L2_CTRL_TYPE_U16:
+-		pr_cont("%u", (unsigned)*ptr.p_u16);
+-		break;
+-	case V4L2_CTRL_TYPE_U32:
+-		pr_cont("%u", (unsigned)*ptr.p_u32);
+-		break;
+-	case V4L2_CTRL_TYPE_H264_SPS:
+-		pr_cont("H264_SPS");
+-		break;
+-	case V4L2_CTRL_TYPE_H264_PPS:
+-		pr_cont("H264_PPS");
+-		break;
+-	case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
+-		pr_cont("H264_SCALING_MATRIX");
+-		break;
+-	case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
+-		pr_cont("H264_SLICE_PARAMS");
+-		break;
+-	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
+-		pr_cont("H264_DECODE_PARAMS");
+-		break;
+-	case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
+-		pr_cont("H264_PRED_WEIGHTS");
+-		break;
+-	case V4L2_CTRL_TYPE_FWHT_PARAMS:
+-		pr_cont("FWHT_PARAMS");
+-		break;
+-	case V4L2_CTRL_TYPE_VP8_FRAME:
+-		pr_cont("VP8_FRAME");
+-		break;
+-	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+-		pr_cont("HDR10_CLL_INFO");
+-		break;
+-	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+-		pr_cont("HDR10_MASTERING_DISPLAY");
+-		break;
+-	default:
+-		pr_cont("unknown type %d", ctrl->type);
+-		break;
+-	}
+-}
+-
+-/*
+- * Round towards the closest legal value. Be careful when we are
+- * close to the maximum range of the control type to prevent
+- * wrap-arounds.
+- */
+-#define ROUND_TO_RANGE(val, offset_type, ctrl)			\
+-({								\
+-	offset_type offset;					\
+-	if ((ctrl)->maximum >= 0 &&				\
+-	    val >= (ctrl)->maximum - (s32)((ctrl)->step / 2))	\
+-		val = (ctrl)->maximum;				\
+-	else							\
+-		val += (s32)((ctrl)->step / 2);			\
+-	val = clamp_t(typeof(val), val,				\
+-		      (ctrl)->minimum, (ctrl)->maximum);	\
+-	offset = (val) - (ctrl)->minimum;			\
+-	offset = (ctrl)->step * (offset / (u32)(ctrl)->step);	\
+-	val = (ctrl)->minimum + offset;				\
+-	0;							\
+-})
+-
+-/* Validate a new control */
+-
+-#define zero_padding(s) \
+-	memset(&(s).padding, 0, sizeof((s).padding))
+-#define zero_reserved(s) \
+-	memset(&(s).reserved, 0, sizeof((s).reserved))
+-
+-/*
+- * Compound controls validation requires setting unused fields/flags to zero
+- * in order to properly detect unchanged controls with std_equal's memcmp.
+- */
+-static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
+-				 union v4l2_ctrl_ptr ptr)
+-{
+-	struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
+-	struct v4l2_ctrl_vp8_frame *p_vp8_frame;
+-	struct v4l2_ctrl_fwht_params *p_fwht_params;
+-	struct v4l2_ctrl_h264_sps *p_h264_sps;
+-	struct v4l2_ctrl_h264_pps *p_h264_pps;
+-	struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights;
+-	struct v4l2_ctrl_h264_slice_params *p_h264_slice_params;
+-	struct v4l2_ctrl_h264_decode_params *p_h264_dec_params;
+-	struct v4l2_ctrl_hevc_sps *p_hevc_sps;
+-	struct v4l2_ctrl_hevc_pps *p_hevc_pps;
+-	struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
+-	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
+-	struct v4l2_area *area;
+-	void *p = ptr.p + idx * ctrl->elem_size;
+-	unsigned int i;
+-
+-	switch ((u32)ctrl->type) {
+-	case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
+-		p_mpeg2_slice_params = p;
+-
+-		switch (p_mpeg2_slice_params->sequence.chroma_format) {
+-		case 1: /* 4:2:0 */
+-		case 2: /* 4:2:2 */
+-		case 3: /* 4:4:4 */
+-			break;
+-		default:
+-			return -EINVAL;
+-		}
+-
+-		switch (p_mpeg2_slice_params->picture.intra_dc_precision) {
+-		case 0: /* 8 bits */
+-		case 1: /* 9 bits */
+-		case 2: /* 10 bits */
+-		case 3: /* 11 bits */
+-			break;
+-		default:
+-			return -EINVAL;
+-		}
+-
+-		switch (p_mpeg2_slice_params->picture.picture_structure) {
+-		case 1: /* interlaced top field */
+-		case 2: /* interlaced bottom field */
+-		case 3: /* progressive */
+-			break;
+-		default:
+-			return -EINVAL;
+-		}
+-
+-		switch (p_mpeg2_slice_params->picture.picture_coding_type) {
+-		case V4L2_MPEG2_PICTURE_CODING_TYPE_I:
+-		case V4L2_MPEG2_PICTURE_CODING_TYPE_P:
+-		case V4L2_MPEG2_PICTURE_CODING_TYPE_B:
+-			break;
+-		default:
+-			return -EINVAL;
+-		}
+-
+-		break;
+-
+-	case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
+-		break;
+-
+-	case V4L2_CTRL_TYPE_FWHT_PARAMS:
+-		p_fwht_params = p;
+-		if (p_fwht_params->version < V4L2_FWHT_VERSION)
+-			return -EINVAL;
+-		if (!p_fwht_params->width || !p_fwht_params->height)
+-			return -EINVAL;
+-		break;
+-
+-	case V4L2_CTRL_TYPE_H264_SPS:
+-		p_h264_sps = p;
+-
+-		/* Some syntax elements are only conditionally valid */
+-		if (p_h264_sps->pic_order_cnt_type != 0) {
+-			p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 = 0;
+-		} else if (p_h264_sps->pic_order_cnt_type != 1) {
+-			p_h264_sps->num_ref_frames_in_pic_order_cnt_cycle = 0;
+-			p_h264_sps->offset_for_non_ref_pic = 0;
+-			p_h264_sps->offset_for_top_to_bottom_field = 0;
+-			memset(&p_h264_sps->offset_for_ref_frame, 0,
+-			       sizeof(p_h264_sps->offset_for_ref_frame));
+-		}
+-
+-		if (!V4L2_H264_SPS_HAS_CHROMA_FORMAT(p_h264_sps)) {
+-			p_h264_sps->chroma_format_idc = 1;
+-			p_h264_sps->bit_depth_luma_minus8 = 0;
+-			p_h264_sps->bit_depth_chroma_minus8 = 0;
+-
+-			p_h264_sps->flags &=
+-				~V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS;
+-
+-			if (p_h264_sps->chroma_format_idc < 3)
+-				p_h264_sps->flags &=
+-					~V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE;
+-		}
+-
+-		if (p_h264_sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY)
+-			p_h264_sps->flags &=
+-				~V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD;
+-
+-		/*
+-		 * Chroma 4:2:2 format require at least High 4:2:2 profile.
+-		 *
+-		 * The H264 specification and well-known parser implementations
+-		 * use profile-idc values directly, as that is clearer and
+-		 * less ambiguous. We do the same here.
+-		 */
+-		if (p_h264_sps->profile_idc < 122 &&
+-		    p_h264_sps->chroma_format_idc > 1)
+-			return -EINVAL;
+-		/* Chroma 4:4:4 format require at least High 4:2:2 profile */
+-		if (p_h264_sps->profile_idc < 244 &&
+-		    p_h264_sps->chroma_format_idc > 2)
+-			return -EINVAL;
+-		if (p_h264_sps->chroma_format_idc > 3)
+-			return -EINVAL;
+-
+-		if (p_h264_sps->bit_depth_luma_minus8 > 6)
+-			return -EINVAL;
+-		if (p_h264_sps->bit_depth_chroma_minus8 > 6)
+-			return -EINVAL;
+-		if (p_h264_sps->log2_max_frame_num_minus4 > 12)
+-			return -EINVAL;
+-		if (p_h264_sps->pic_order_cnt_type > 2)
+-			return -EINVAL;
+-		if (p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 > 12)
+-			return -EINVAL;
+-		if (p_h264_sps->max_num_ref_frames > V4L2_H264_REF_LIST_LEN)
+-			return -EINVAL;
+-		break;
+-
+-	case V4L2_CTRL_TYPE_H264_PPS:
+-		p_h264_pps = p;
+-
+-		if (p_h264_pps->num_slice_groups_minus1 > 7)
+-			return -EINVAL;
+-		if (p_h264_pps->num_ref_idx_l0_default_active_minus1 >
+-		    (V4L2_H264_REF_LIST_LEN - 1))
+-			return -EINVAL;
+-		if (p_h264_pps->num_ref_idx_l1_default_active_minus1 >
+-		    (V4L2_H264_REF_LIST_LEN - 1))
+-			return -EINVAL;
+-		if (p_h264_pps->weighted_bipred_idc > 2)
+-			return -EINVAL;
+-		/*
+-		 * pic_init_qp_minus26 shall be in the range of
+-		 * -(26 + QpBdOffset_y) to +25, inclusive,
+-		 *  where QpBdOffset_y is 6 * bit_depth_luma_minus8
+-		 */
+-		if (p_h264_pps->pic_init_qp_minus26 < -62 ||
+-		    p_h264_pps->pic_init_qp_minus26 > 25)
+-			return -EINVAL;
+-		if (p_h264_pps->pic_init_qs_minus26 < -26 ||
+-		    p_h264_pps->pic_init_qs_minus26 > 25)
+-			return -EINVAL;
+-		if (p_h264_pps->chroma_qp_index_offset < -12 ||
+-		    p_h264_pps->chroma_qp_index_offset > 12)
+-			return -EINVAL;
+-		if (p_h264_pps->second_chroma_qp_index_offset < -12 ||
+-		    p_h264_pps->second_chroma_qp_index_offset > 12)
+-			return -EINVAL;
+-		break;
+-
+-	case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
+-		break;
+-
+-	case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
+-		p_h264_pred_weights = p;
+-
+-		if (p_h264_pred_weights->luma_log2_weight_denom > 7)
+-			return -EINVAL;
+-		if (p_h264_pred_weights->chroma_log2_weight_denom > 7)
+-			return -EINVAL;
+-		break;
+-
+-	case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
+-		p_h264_slice_params = p;
+-
+-		if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
+-			p_h264_slice_params->flags &=
+-				~V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED;
+-
+-		if (p_h264_slice_params->colour_plane_id > 2)
+-			return -EINVAL;
+-		if (p_h264_slice_params->cabac_init_idc > 2)
+-			return -EINVAL;
+-		if (p_h264_slice_params->disable_deblocking_filter_idc > 2)
+-			return -EINVAL;
+-		if (p_h264_slice_params->slice_alpha_c0_offset_div2 < -6 ||
+-		    p_h264_slice_params->slice_alpha_c0_offset_div2 > 6)
+-			return -EINVAL;
+-		if (p_h264_slice_params->slice_beta_offset_div2 < -6 ||
+-		    p_h264_slice_params->slice_beta_offset_div2 > 6)
+-			return -EINVAL;
+-
+-		if (p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_I ||
+-		    p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_SI)
+-			p_h264_slice_params->num_ref_idx_l0_active_minus1 = 0;
+-		if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
+-			p_h264_slice_params->num_ref_idx_l1_active_minus1 = 0;
+-
+-		if (p_h264_slice_params->num_ref_idx_l0_active_minus1 >
+-		    (V4L2_H264_REF_LIST_LEN - 1))
+-			return -EINVAL;
+-		if (p_h264_slice_params->num_ref_idx_l1_active_minus1 >
+-		    (V4L2_H264_REF_LIST_LEN - 1))
+-			return -EINVAL;
+-		zero_reserved(*p_h264_slice_params);
+-		break;
+-
+-	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
+-		p_h264_dec_params = p;
+-
+-		if (p_h264_dec_params->nal_ref_idc > 3)
+-			return -EINVAL;
+-		for (i = 0; i < V4L2_H264_NUM_DPB_ENTRIES; i++) {
+-			struct v4l2_h264_dpb_entry *dpb_entry =
+-				&p_h264_dec_params->dpb[i];
+-
+-			zero_reserved(*dpb_entry);
+-		}
+-		zero_reserved(*p_h264_dec_params);
+-		break;
+-
+-	case V4L2_CTRL_TYPE_VP8_FRAME:
+-		p_vp8_frame = p;
+-
+-		switch (p_vp8_frame->num_dct_parts) {
+-		case 1:
+-		case 2:
+-		case 4:
+-		case 8:
+-			break;
+-		default:
+-			return -EINVAL;
+-		}
+-		zero_padding(p_vp8_frame->segment);
+-		zero_padding(p_vp8_frame->lf);
+-		zero_padding(p_vp8_frame->quant);
+-		zero_padding(p_vp8_frame->entropy);
+-		zero_padding(p_vp8_frame->coder_state);
+-		break;
+-
+-	case V4L2_CTRL_TYPE_HEVC_SPS:
+-		p_hevc_sps = p;
+-
+-		if (!(p_hevc_sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) {
+-			p_hevc_sps->pcm_sample_bit_depth_luma_minus1 = 0;
+-			p_hevc_sps->pcm_sample_bit_depth_chroma_minus1 = 0;
+-			p_hevc_sps->log2_min_pcm_luma_coding_block_size_minus3 = 0;
+-			p_hevc_sps->log2_diff_max_min_pcm_luma_coding_block_size = 0;
+-		}
+-
+-		if (!(p_hevc_sps->flags &
+-		      V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT))
+-			p_hevc_sps->num_long_term_ref_pics_sps = 0;
+-		break;
+-
+-	case V4L2_CTRL_TYPE_HEVC_PPS:
+-		p_hevc_pps = p;
+-
+-		if (!(p_hevc_pps->flags &
+-		      V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED))
+-			p_hevc_pps->diff_cu_qp_delta_depth = 0;
+-
+-		if (!(p_hevc_pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
+-			p_hevc_pps->num_tile_columns_minus1 = 0;
+-			p_hevc_pps->num_tile_rows_minus1 = 0;
+-			memset(&p_hevc_pps->column_width_minus1, 0,
+-			       sizeof(p_hevc_pps->column_width_minus1));
+-			memset(&p_hevc_pps->row_height_minus1, 0,
+-			       sizeof(p_hevc_pps->row_height_minus1));
+-
+-			p_hevc_pps->flags &=
+-				~V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED;
+-		}
+-
+-		if (p_hevc_pps->flags &
+-		    V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER) {
+-			p_hevc_pps->pps_beta_offset_div2 = 0;
+-			p_hevc_pps->pps_tc_offset_div2 = 0;
+-		}
+-
+-		zero_padding(*p_hevc_pps);
+-		break;
+-
+-	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
+-		p_hevc_slice_params = p;
+-
+-		if (p_hevc_slice_params->num_active_dpb_entries >
+-		    V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
+-			return -EINVAL;
+-
+-		zero_padding(p_hevc_slice_params->pred_weight_table);
+-
+-		for (i = 0; i < p_hevc_slice_params->num_active_dpb_entries;
+-		     i++) {
+-			struct v4l2_hevc_dpb_entry *dpb_entry =
+-				&p_hevc_slice_params->dpb[i];
+-
+-			zero_padding(*dpb_entry);
+-		}
+-
+-		zero_padding(*p_hevc_slice_params);
+-		break;
+-
+-	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+-		break;
+-
+-	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+-		p_hdr10_mastering = p;
+-
+-		for (i = 0; i < 3; ++i) {
+-			if (p_hdr10_mastering->display_primaries_x[i] <
+-				V4L2_HDR10_MASTERING_PRIMARIES_X_LOW ||
+-			    p_hdr10_mastering->display_primaries_x[i] >
+-				V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH ||
+-			    p_hdr10_mastering->display_primaries_y[i] <
+-				V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW ||
+-			    p_hdr10_mastering->display_primaries_y[i] >
+-				V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH)
+-				return -EINVAL;
+-		}
+-
+-		if (p_hdr10_mastering->white_point_x <
+-			V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW ||
+-		    p_hdr10_mastering->white_point_x >
+-			V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH ||
+-		    p_hdr10_mastering->white_point_y <
+-			V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW ||
+-		    p_hdr10_mastering->white_point_y >
+-			V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH)
+-			return -EINVAL;
+-
+-		if (p_hdr10_mastering->max_display_mastering_luminance <
+-			V4L2_HDR10_MASTERING_MAX_LUMA_LOW ||
+-		    p_hdr10_mastering->max_display_mastering_luminance >
+-			V4L2_HDR10_MASTERING_MAX_LUMA_HIGH ||
+-		    p_hdr10_mastering->min_display_mastering_luminance <
+-			V4L2_HDR10_MASTERING_MIN_LUMA_LOW ||
+-		    p_hdr10_mastering->min_display_mastering_luminance >
+-			V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
+-			return -EINVAL;
+-
+-		/* The following restriction comes from ITU-T Rec. H.265 spec */
+-		if (p_hdr10_mastering->max_display_mastering_luminance ==
+-			V4L2_HDR10_MASTERING_MAX_LUMA_LOW &&
+-		    p_hdr10_mastering->min_display_mastering_luminance ==
+-			V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
+-			return -EINVAL;
+-
+-		break;
+-
+-	case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX:
+-		break;
+-
+-	case V4L2_CTRL_TYPE_AREA:
+-		area = p;
+-		if (!area->width || !area->height)
+-			return -EINVAL;
+-		break;
+-
+-	default:
+-		return -EINVAL;
+-	}
+-
+-	return 0;
+-}
+-
+-static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx,
+-			union v4l2_ctrl_ptr ptr)
+-{
+-	size_t len;
+-	u64 offset;
+-	s64 val;
+-
+-	switch ((u32)ctrl->type) {
+-	case V4L2_CTRL_TYPE_INTEGER:
+-		return ROUND_TO_RANGE(ptr.p_s32[idx], u32, ctrl);
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		/*
+-		 * We can't use the ROUND_TO_RANGE define here due to
+-		 * the u64 divide that needs special care.
+-		 */
+-		val = ptr.p_s64[idx];
+-		if (ctrl->maximum >= 0 && val >= ctrl->maximum - (s64)(ctrl->step / 2))
+-			val = ctrl->maximum;
+-		else
+-			val += (s64)(ctrl->step / 2);
+-		val = clamp_t(s64, val, ctrl->minimum, ctrl->maximum);
+-		offset = val - ctrl->minimum;
+-		do_div(offset, ctrl->step);
+-		ptr.p_s64[idx] = ctrl->minimum + offset * ctrl->step;
+-		return 0;
+-	case V4L2_CTRL_TYPE_U8:
+-		return ROUND_TO_RANGE(ptr.p_u8[idx], u8, ctrl);
+-	case V4L2_CTRL_TYPE_U16:
+-		return ROUND_TO_RANGE(ptr.p_u16[idx], u16, ctrl);
+-	case V4L2_CTRL_TYPE_U32:
+-		return ROUND_TO_RANGE(ptr.p_u32[idx], u32, ctrl);
+-
+-	case V4L2_CTRL_TYPE_BOOLEAN:
+-		ptr.p_s32[idx] = !!ptr.p_s32[idx];
+-		return 0;
+-
+-	case V4L2_CTRL_TYPE_MENU:
+-	case V4L2_CTRL_TYPE_INTEGER_MENU:
+-		if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum)
+-			return -ERANGE;
+-		if (ptr.p_s32[idx] < BITS_PER_LONG_LONG &&
+-		    (ctrl->menu_skip_mask & BIT_ULL(ptr.p_s32[idx])))
+-			return -EINVAL;
+-		if (ctrl->type == V4L2_CTRL_TYPE_MENU &&
+-		    ctrl->qmenu[ptr.p_s32[idx]][0] == '\0')
+-			return -EINVAL;
+-		return 0;
+-
+-	case V4L2_CTRL_TYPE_BITMASK:
+-		ptr.p_s32[idx] &= ctrl->maximum;
+-		return 0;
+-
+-	case V4L2_CTRL_TYPE_BUTTON:
+-	case V4L2_CTRL_TYPE_CTRL_CLASS:
+-		ptr.p_s32[idx] = 0;
+-		return 0;
+-
+-	case V4L2_CTRL_TYPE_STRING:
+-		idx *= ctrl->elem_size;
+-		len = strlen(ptr.p_char + idx);
+-		if (len < ctrl->minimum)
+-			return -ERANGE;
+-		if ((len - (u32)ctrl->minimum) % (u32)ctrl->step)
+-			return -ERANGE;
+-		return 0;
+-
+-	default:
+-		return std_validate_compound(ctrl, idx, ptr);
+-	}
+-}
+-
+-static const struct v4l2_ctrl_type_ops std_type_ops = {
+-	.equal = std_equal,
+-	.init = std_init,
+-	.log = std_log,
+-	.validate = std_validate,
+-};
+-
+-/* Helper function: copy the given control value back to the caller */
+-static int ptr_to_user(struct v4l2_ext_control *c,
+-		       struct v4l2_ctrl *ctrl,
+-		       union v4l2_ctrl_ptr ptr)
+-{
+-	u32 len;
+-
+-	if (ctrl->is_ptr && !ctrl->is_string)
+-		return copy_to_user(c->ptr, ptr.p_const, c->size) ?
+-		       -EFAULT : 0;
+-
+-	switch (ctrl->type) {
+-	case V4L2_CTRL_TYPE_STRING:
+-		len = strlen(ptr.p_char);
+-		if (c->size < len + 1) {
+-			c->size = ctrl->elem_size;
+-			return -ENOSPC;
+-		}
+-		return copy_to_user(c->string, ptr.p_char, len + 1) ?
+-		       -EFAULT : 0;
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		c->value64 = *ptr.p_s64;
+-		break;
+-	default:
+-		c->value = *ptr.p_s32;
+-		break;
+-	}
+-	return 0;
+-}
+-
+-/* Helper function: copy the current control value back to the caller */
+-static int cur_to_user(struct v4l2_ext_control *c,
+-		       struct v4l2_ctrl *ctrl)
+-{
+-	return ptr_to_user(c, ctrl, ctrl->p_cur);
+-}
+-
+-/* Helper function: copy the new control value back to the caller */
+-static int new_to_user(struct v4l2_ext_control *c,
+-		       struct v4l2_ctrl *ctrl)
+-{
+-	return ptr_to_user(c, ctrl, ctrl->p_new);
+-}
+-
+-/* Helper function: copy the request value back to the caller */
+-static int req_to_user(struct v4l2_ext_control *c,
+-		       struct v4l2_ctrl_ref *ref)
+-{
+-	return ptr_to_user(c, ref->ctrl, ref->p_req);
+-}
+-
+-/* Helper function: copy the initial control value back to the caller */
+-static int def_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl)
+-{
+-	int idx;
+-
+-	for (idx = 0; idx < ctrl->elems; idx++)
+-		ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
+-
+-	return ptr_to_user(c, ctrl, ctrl->p_new);
+-}
+-
+-/* Helper function: copy the caller-provider value to the given control value */
+-static int user_to_ptr(struct v4l2_ext_control *c,
+-		       struct v4l2_ctrl *ctrl,
+-		       union v4l2_ctrl_ptr ptr)
+-{
+-	int ret;
+-	u32 size;
+-
+-	ctrl->is_new = 1;
+-	if (ctrl->is_ptr && !ctrl->is_string) {
+-		unsigned idx;
+-
+-		ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0;
+-		if (ret || !ctrl->is_array)
+-			return ret;
+-		for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++)
+-			ctrl->type_ops->init(ctrl, idx, ptr);
+-		return 0;
+-	}
+-
+-	switch (ctrl->type) {
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		*ptr.p_s64 = c->value64;
+-		break;
+-	case V4L2_CTRL_TYPE_STRING:
+-		size = c->size;
+-		if (size == 0)
+-			return -ERANGE;
+-		if (size > ctrl->maximum + 1)
+-			size = ctrl->maximum + 1;
+-		ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0;
+-		if (!ret) {
+-			char last = ptr.p_char[size - 1];
+-
+-			ptr.p_char[size - 1] = 0;
+-			/* If the string was longer than ctrl->maximum,
+-			   then return an error. */
+-			if (strlen(ptr.p_char) == ctrl->maximum && last)
+-				return -ERANGE;
+-		}
+-		return ret;
+-	default:
+-		*ptr.p_s32 = c->value;
+-		break;
+-	}
+-	return 0;
+-}
+-
+-/* Helper function: copy the caller-provider value as the new control value */
+-static int user_to_new(struct v4l2_ext_control *c,
+-		       struct v4l2_ctrl *ctrl)
+-{
+-	return user_to_ptr(c, ctrl, ctrl->p_new);
+-}
+-
+-/* Copy the one value to another. */
+-static void ptr_to_ptr(struct v4l2_ctrl *ctrl,
+-		       union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to)
+-{
+-	if (ctrl == NULL)
+-		return;
+-	memcpy(to.p, from.p_const, ctrl->elems * ctrl->elem_size);
+-}
+-
+-/* Copy the new value to the current value. */
+-static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
+-{
+-	bool changed;
+-
+-	if (ctrl == NULL)
+-		return;
+-
+-	/* has_changed is set by cluster_changed */
+-	changed = ctrl->has_changed;
+-	if (changed)
+-		ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur);
+-
+-	if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) {
+-		/* Note: CH_FLAGS is only set for auto clusters. */
+-		ctrl->flags &=
+-			~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE);
+-		if (!is_cur_manual(ctrl->cluster[0])) {
+-			ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
+-			if (ctrl->cluster[0]->has_volatiles)
+-				ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+-		}
+-		fh = NULL;
+-	}
+-	if (changed || ch_flags) {
+-		/* If a control was changed that was not one of the controls
+-		   modified by the application, then send the event to all. */
+-		if (!ctrl->is_new)
+-			fh = NULL;
+-		send_event(fh, ctrl,
+-			(changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags);
+-		if (ctrl->call_notify && changed && ctrl->handler->notify)
+-			ctrl->handler->notify(ctrl, ctrl->handler->notify_priv);
+-	}
+-}
+-
+-/* Copy the current value to the new value */
+-static void cur_to_new(struct v4l2_ctrl *ctrl)
+-{
+-	if (ctrl == NULL)
+-		return;
+-	ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new);
+-}
+-
+-/* Copy the new value to the request value */
+-static void new_to_req(struct v4l2_ctrl_ref *ref)
+-{
+-	if (!ref)
+-		return;
+-	ptr_to_ptr(ref->ctrl, ref->ctrl->p_new, ref->p_req);
+-	ref->valid_p_req = true;
+-}
+-
+-/* Copy the current value to the request value */
+-static void cur_to_req(struct v4l2_ctrl_ref *ref)
+-{
+-	if (!ref)
+-		return;
+-	ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->p_req);
+-	ref->valid_p_req = true;
+-}
+-
+-/* Copy the request value to the new value */
+-static void req_to_new(struct v4l2_ctrl_ref *ref)
+-{
+-	if (!ref)
+-		return;
+-	if (ref->valid_p_req)
+-		ptr_to_ptr(ref->ctrl, ref->p_req, ref->ctrl->p_new);
+-	else
+-		ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->ctrl->p_new);
+-}
+-
+-/* Return non-zero if one or more of the controls in the cluster has a new
+-   value that differs from the current value. */
+-static int cluster_changed(struct v4l2_ctrl *master)
+-{
+-	bool changed = false;
+-	unsigned idx;
+-	int i;
+-
+-	for (i = 0; i < master->ncontrols; i++) {
+-		struct v4l2_ctrl *ctrl = master->cluster[i];
+-		bool ctrl_changed = false;
+-
+-		if (ctrl == NULL)
+-			continue;
+-
+-		if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE)
+-			changed = ctrl_changed = true;
+-
+-		/*
+-		 * Set has_changed to false to avoid generating
+-		 * the event V4L2_EVENT_CTRL_CH_VALUE
+-		 */
+-		if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
+-			ctrl->has_changed = false;
+-			continue;
+-		}
+-
+-		for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++)
+-			ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
+-				ctrl->p_cur, ctrl->p_new);
+-		ctrl->has_changed = ctrl_changed;
+-		changed |= ctrl->has_changed;
+-	}
+-	return changed;
+-}
+-
+-/* Control range checking */
+-static int check_range(enum v4l2_ctrl_type type,
+-		s64 min, s64 max, u64 step, s64 def)
+-{
+-	switch (type) {
+-	case V4L2_CTRL_TYPE_BOOLEAN:
+-		if (step != 1 || max > 1 || min < 0)
+-			return -ERANGE;
+-		fallthrough;
+-	case V4L2_CTRL_TYPE_U8:
+-	case V4L2_CTRL_TYPE_U16:
+-	case V4L2_CTRL_TYPE_U32:
+-	case V4L2_CTRL_TYPE_INTEGER:
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		if (step == 0 || min > max || def < min || def > max)
+-			return -ERANGE;
+-		return 0;
+-	case V4L2_CTRL_TYPE_BITMASK:
+-		if (step || min || !max || (def & ~max))
+-			return -ERANGE;
+-		return 0;
+-	case V4L2_CTRL_TYPE_MENU:
+-	case V4L2_CTRL_TYPE_INTEGER_MENU:
+-		if (min > max || def < min || def > max)
+-			return -ERANGE;
+-		/* Note: step == menu_skip_mask for menu controls.
+-		   So here we check if the default value is masked out. */
+-		if (step && ((1 << def) & step))
+-			return -EINVAL;
+-		return 0;
+-	case V4L2_CTRL_TYPE_STRING:
+-		if (min > max || min < 0 || step < 1 || def)
+-			return -ERANGE;
+-		return 0;
+-	default:
+-		return 0;
+-	}
+-}
+-
+-/* Validate a new control */
+-static int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new)
+-{
+-	unsigned idx;
+-	int err = 0;
+-
+-	for (idx = 0; !err && idx < ctrl->elems; idx++)
+-		err = ctrl->type_ops->validate(ctrl, idx, p_new);
+-	return err;
+-}
+-
+-static inline u32 node2id(struct list_head *node)
+-{
+-	return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id;
+-}
+-
+-/* Set the handler's error code if it wasn't set earlier already */
+-static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err)
+-{
+-	if (hdl->error == 0)
+-		hdl->error = err;
+-	return err;
+-}
+-
+-/* Initialize the handler */
+-int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,
+-				 unsigned nr_of_controls_hint,
+-				 struct lock_class_key *key, const char *name)
+-{
+-	mutex_init(&hdl->_lock);
+-	hdl->lock = &hdl->_lock;
+-	lockdep_set_class_and_name(hdl->lock, key, name);
+-	INIT_LIST_HEAD(&hdl->ctrls);
+-	INIT_LIST_HEAD(&hdl->ctrl_refs);
+-	INIT_LIST_HEAD(&hdl->requests);
+-	INIT_LIST_HEAD(&hdl->requests_queued);
+-	hdl->request_is_queued = false;
+-	hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8;
+-	hdl->buckets = kvmalloc_array(hdl->nr_of_buckets,
+-				      sizeof(hdl->buckets[0]),
+-				      GFP_KERNEL | __GFP_ZERO);
+-	hdl->error = hdl->buckets ? 0 : -ENOMEM;
+-	media_request_object_init(&hdl->req_obj);
+-	return hdl->error;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_handler_init_class);
+-
+-/* Free all controls and control refs */
+-void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl)
+-{
+-	struct v4l2_ctrl_ref *ref, *next_ref;
+-	struct v4l2_ctrl *ctrl, *next_ctrl;
+-	struct v4l2_subscribed_event *sev, *next_sev;
+-
+-	if (hdl == NULL || hdl->buckets == NULL)
+-		return;
+-
+-	/*
+-	 * If the main handler is freed and it is used by handler objects in
+-	 * outstanding requests, then unbind and put those objects before
+-	 * freeing the main handler.
+-	 *
+-	 * The main handler can be identified by having a NULL ops pointer in
+-	 * the request object.
+-	 */
+-	if (!hdl->req_obj.ops && !list_empty(&hdl->requests)) {
+-		struct v4l2_ctrl_handler *req, *next_req;
+-
+-		list_for_each_entry_safe(req, next_req, &hdl->requests, requests) {
+-			media_request_object_unbind(&req->req_obj);
+-			media_request_object_put(&req->req_obj);
+-		}
+-	}
+-	mutex_lock(hdl->lock);
+-	/* Free all nodes */
+-	list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) {
+-		list_del(&ref->node);
+-		kfree(ref);
+-	}
+-	/* Free all controls owned by the handler */
+-	list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) {
+-		list_del(&ctrl->node);
+-		list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node)
+-			list_del(&sev->node);
+-		kvfree(ctrl);
+-	}
+-	kvfree(hdl->buckets);
+-	hdl->buckets = NULL;
+-	hdl->cached = NULL;
+-	hdl->error = 0;
+-	mutex_unlock(hdl->lock);
+-	mutex_destroy(&hdl->_lock);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_handler_free);
+-
+-/* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer
+-   be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing
+-   with applications that do not use the NEXT_CTRL flag.
+-
+-   We just find the n-th private user control. It's O(N), but that should not
+-   be an issue in this particular case. */
+-static struct v4l2_ctrl_ref *find_private_ref(
+-		struct v4l2_ctrl_handler *hdl, u32 id)
+-{
+-	struct v4l2_ctrl_ref *ref;
+-
+-	id -= V4L2_CID_PRIVATE_BASE;
+-	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+-		/* Search for private user controls that are compatible with
+-		   VIDIOC_G/S_CTRL. */
+-		if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER &&
+-		    V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) {
+-			if (!ref->ctrl->is_int)
+-				continue;
+-			if (id == 0)
+-				return ref;
+-			id--;
+-		}
+-	}
+-	return NULL;
+-}
+-
+-/* Find a control with the given ID. */
+-static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id)
+-{
+-	struct v4l2_ctrl_ref *ref;
+-	int bucket;
+-
+-	id &= V4L2_CTRL_ID_MASK;
+-
+-	/* Old-style private controls need special handling */
+-	if (id >= V4L2_CID_PRIVATE_BASE)
+-		return find_private_ref(hdl, id);
+-	bucket = id % hdl->nr_of_buckets;
+-
+-	/* Simple optimization: cache the last control found */
+-	if (hdl->cached && hdl->cached->ctrl->id == id)
+-		return hdl->cached;
+-
+-	/* Not in cache, search the hash */
+-	ref = hdl->buckets ? hdl->buckets[bucket] : NULL;
+-	while (ref && ref->ctrl->id != id)
+-		ref = ref->next;
+-
+-	if (ref)
+-		hdl->cached = ref; /* cache it! */
+-	return ref;
+-}
+-
+-/* Find a control with the given ID. Take the handler's lock first. */
+-static struct v4l2_ctrl_ref *find_ref_lock(
+-		struct v4l2_ctrl_handler *hdl, u32 id)
+-{
+-	struct v4l2_ctrl_ref *ref = NULL;
+-
+-	if (hdl) {
+-		mutex_lock(hdl->lock);
+-		ref = find_ref(hdl, id);
+-		mutex_unlock(hdl->lock);
+-	}
+-	return ref;
+-}
+-
+-/* Find a control with the given ID. */
+-struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
+-{
+-	struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
+-
+-	return ref ? ref->ctrl : NULL;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_find);
+-
+-/* Allocate a new v4l2_ctrl_ref and hook it into the handler. */
+-static int handler_new_ref(struct v4l2_ctrl_handler *hdl,
+-			   struct v4l2_ctrl *ctrl,
+-			   struct v4l2_ctrl_ref **ctrl_ref,
+-			   bool from_other_dev, bool allocate_req)
+-{
+-	struct v4l2_ctrl_ref *ref;
+-	struct v4l2_ctrl_ref *new_ref;
+-	u32 id = ctrl->id;
+-	u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1;
+-	int bucket = id % hdl->nr_of_buckets;	/* which bucket to use */
+-	unsigned int size_extra_req = 0;
+-
+-	if (ctrl_ref)
+-		*ctrl_ref = NULL;
+-
+-	/*
+-	 * Automatically add the control class if it is not yet present and
+-	 * the new control is not a compound control.
+-	 */
+-	if (ctrl->type < V4L2_CTRL_COMPOUND_TYPES &&
+-	    id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL)
+-		if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0))
+-			return hdl->error;
+-
+-	if (hdl->error)
+-		return hdl->error;
+-
+-	if (allocate_req)
+-		size_extra_req = ctrl->elems * ctrl->elem_size;
+-	new_ref = kzalloc(sizeof(*new_ref) + size_extra_req, GFP_KERNEL);
+-	if (!new_ref)
+-		return handler_set_err(hdl, -ENOMEM);
+-	new_ref->ctrl = ctrl;
+-	new_ref->from_other_dev = from_other_dev;
+-	if (size_extra_req)
+-		new_ref->p_req.p = &new_ref[1];
+-
+-	INIT_LIST_HEAD(&new_ref->node);
+-
+-	mutex_lock(hdl->lock);
+-
+-	/* Add immediately at the end of the list if the list is empty, or if
+-	   the last element in the list has a lower ID.
+-	   This ensures that when elements are added in ascending order the
+-	   insertion is an O(1) operation. */
+-	if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) {
+-		list_add_tail(&new_ref->node, &hdl->ctrl_refs);
+-		goto insert_in_hash;
+-	}
+-
+-	/* Find insert position in sorted list */
+-	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+-		if (ref->ctrl->id < id)
+-			continue;
+-		/* Don't add duplicates */
+-		if (ref->ctrl->id == id) {
+-			kfree(new_ref);
+-			goto unlock;
+-		}
+-		list_add(&new_ref->node, ref->node.prev);
+-		break;
+-	}
+-
+-insert_in_hash:
+-	/* Insert the control node in the hash */
+-	new_ref->next = hdl->buckets[bucket];
+-	hdl->buckets[bucket] = new_ref;
+-	if (ctrl_ref)
+-		*ctrl_ref = new_ref;
+-	if (ctrl->handler == hdl) {
+-		/* By default each control starts in a cluster of its own.
+-		 * new_ref->ctrl is basically a cluster array with one
+-		 * element, so that's perfect to use as the cluster pointer.
+-		 * But only do this for the handler that owns the control.
+-		 */
+-		ctrl->cluster = &new_ref->ctrl;
+-		ctrl->ncontrols = 1;
+-	}
+-
+-unlock:
+-	mutex_unlock(hdl->lock);
+-	return 0;
+-}
+-
+-/* Add a new control */
+-static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
+-			const struct v4l2_ctrl_ops *ops,
+-			const struct v4l2_ctrl_type_ops *type_ops,
+-			u32 id, const char *name, enum v4l2_ctrl_type type,
+-			s64 min, s64 max, u64 step, s64 def,
+-			const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size,
+-			u32 flags, const char * const *qmenu,
+-			const s64 *qmenu_int, const union v4l2_ctrl_ptr p_def,
+-			void *priv)
+-{
+-	struct v4l2_ctrl *ctrl;
+-	unsigned sz_extra;
+-	unsigned nr_of_dims = 0;
+-	unsigned elems = 1;
+-	bool is_array;
+-	unsigned tot_ctrl_size;
+-	unsigned idx;
+-	void *data;
+-	int err;
+-
+-	if (hdl->error)
+-		return NULL;
+-
+-	while (dims && dims[nr_of_dims]) {
+-		elems *= dims[nr_of_dims];
+-		nr_of_dims++;
+-		if (nr_of_dims == V4L2_CTRL_MAX_DIMS)
+-			break;
+-	}
+-	is_array = nr_of_dims > 0;
+-
+-	/* Prefill elem_size for all types handled by std_type_ops */
+-	switch ((u32)type) {
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-		elem_size = sizeof(s64);
+-		break;
+-	case V4L2_CTRL_TYPE_STRING:
+-		elem_size = max + 1;
+-		break;
+-	case V4L2_CTRL_TYPE_U8:
+-		elem_size = sizeof(u8);
+-		break;
+-	case V4L2_CTRL_TYPE_U16:
+-		elem_size = sizeof(u16);
+-		break;
+-	case V4L2_CTRL_TYPE_U32:
+-		elem_size = sizeof(u32);
+-		break;
+-	case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
+-		elem_size = sizeof(struct v4l2_ctrl_mpeg2_slice_params);
+-		break;
+-	case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
+-		elem_size = sizeof(struct v4l2_ctrl_mpeg2_quantization);
+-		break;
+-	case V4L2_CTRL_TYPE_FWHT_PARAMS:
+-		elem_size = sizeof(struct v4l2_ctrl_fwht_params);
+-		break;
+-	case V4L2_CTRL_TYPE_H264_SPS:
+-		elem_size = sizeof(struct v4l2_ctrl_h264_sps);
+-		break;
+-	case V4L2_CTRL_TYPE_H264_PPS:
+-		elem_size = sizeof(struct v4l2_ctrl_h264_pps);
+-		break;
+-	case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
+-		elem_size = sizeof(struct v4l2_ctrl_h264_scaling_matrix);
+-		break;
+-	case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
+-		elem_size = sizeof(struct v4l2_ctrl_h264_slice_params);
+-		break;
+-	case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
+-		elem_size = sizeof(struct v4l2_ctrl_h264_decode_params);
+-		break;
+-	case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
+-		elem_size = sizeof(struct v4l2_ctrl_h264_pred_weights);
+-		break;
+-	case V4L2_CTRL_TYPE_VP8_FRAME:
+-		elem_size = sizeof(struct v4l2_ctrl_vp8_frame);
+-		break;
+-	case V4L2_CTRL_TYPE_HEVC_SPS:
+-		elem_size = sizeof(struct v4l2_ctrl_hevc_sps);
+-		break;
+-	case V4L2_CTRL_TYPE_HEVC_PPS:
+-		elem_size = sizeof(struct v4l2_ctrl_hevc_pps);
+-		break;
+-	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
+-		elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
+-		break;
+-	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+-		elem_size = sizeof(struct v4l2_ctrl_hdr10_cll_info);
+-		break;
+-	case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+-		elem_size = sizeof(struct v4l2_ctrl_hdr10_mastering_display);
+-		break;
+-	case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX:
+-		elem_size = sizeof(struct v4l2_ctrl_hevc_scaling_matrix);
+-		break;
+-	case V4L2_CTRL_TYPE_AREA:
+-		elem_size = sizeof(struct v4l2_area);
+-		break;
+-	default:
+-		if (type < V4L2_CTRL_COMPOUND_TYPES)
+-			elem_size = sizeof(s32);
+-		break;
+-	}
+-	tot_ctrl_size = elem_size * elems;
+-
+-	/* Sanity checks */
+-	if (id == 0 || name == NULL || !elem_size ||
+-	    id >= V4L2_CID_PRIVATE_BASE ||
+-	    (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) ||
+-	    (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) {
+-		handler_set_err(hdl, -ERANGE);
+-		return NULL;
+-	}
+-	err = check_range(type, min, max, step, def);
+-	if (err) {
+-		handler_set_err(hdl, err);
+-		return NULL;
+-	}
+-	if (is_array &&
+-	    (type == V4L2_CTRL_TYPE_BUTTON ||
+-	     type == V4L2_CTRL_TYPE_CTRL_CLASS)) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-
+-	sz_extra = 0;
+-	if (type == V4L2_CTRL_TYPE_BUTTON)
+-		flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
+-			V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+-	else if (type == V4L2_CTRL_TYPE_CTRL_CLASS)
+-		flags |= V4L2_CTRL_FLAG_READ_ONLY;
+-	else if (type == V4L2_CTRL_TYPE_INTEGER64 ||
+-		 type == V4L2_CTRL_TYPE_STRING ||
+-		 type >= V4L2_CTRL_COMPOUND_TYPES ||
+-		 is_array)
+-		sz_extra += 2 * tot_ctrl_size;
+-
+-	if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const)
+-		sz_extra += elem_size;
+-
+-	ctrl = kvzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL);
+-	if (ctrl == NULL) {
+-		handler_set_err(hdl, -ENOMEM);
+-		return NULL;
+-	}
+-
+-	INIT_LIST_HEAD(&ctrl->node);
+-	INIT_LIST_HEAD(&ctrl->ev_subs);
+-	ctrl->handler = hdl;
+-	ctrl->ops = ops;
+-	ctrl->type_ops = type_ops ? type_ops : &std_type_ops;
+-	ctrl->id = id;
+-	ctrl->name = name;
+-	ctrl->type = type;
+-	ctrl->flags = flags;
+-	ctrl->minimum = min;
+-	ctrl->maximum = max;
+-	ctrl->step = step;
+-	ctrl->default_value = def;
+-	ctrl->is_string = !is_array && type == V4L2_CTRL_TYPE_STRING;
+-	ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string;
+-	ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64;
+-	ctrl->is_array = is_array;
+-	ctrl->elems = elems;
+-	ctrl->nr_of_dims = nr_of_dims;
+-	if (nr_of_dims)
+-		memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0]));
+-	ctrl->elem_size = elem_size;
+-	if (type == V4L2_CTRL_TYPE_MENU)
+-		ctrl->qmenu = qmenu;
+-	else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
+-		ctrl->qmenu_int = qmenu_int;
+-	ctrl->priv = priv;
+-	ctrl->cur.val = ctrl->val = def;
+-	data = &ctrl[1];
+-
+-	if (!ctrl->is_int) {
+-		ctrl->p_new.p = data;
+-		ctrl->p_cur.p = data + tot_ctrl_size;
+-	} else {
+-		ctrl->p_new.p = &ctrl->val;
+-		ctrl->p_cur.p = &ctrl->cur.val;
+-	}
+-
+-	if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) {
+-		ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size;
+-		memcpy(ctrl->p_def.p, p_def.p_const, elem_size);
+-	}
+-
+-	for (idx = 0; idx < elems; idx++) {
+-		ctrl->type_ops->init(ctrl, idx, ctrl->p_cur);
+-		ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
+-	}
+-
+-	if (handler_new_ref(hdl, ctrl, NULL, false, false)) {
+-		kvfree(ctrl);
+-		return NULL;
+-	}
+-	mutex_lock(hdl->lock);
+-	list_add_tail(&ctrl->node, &hdl->ctrls);
+-	mutex_unlock(hdl->lock);
+-	return ctrl;
+-}
+-
+-struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
+-			const struct v4l2_ctrl_config *cfg, void *priv)
+-{
+-	bool is_menu;
+-	struct v4l2_ctrl *ctrl;
+-	const char *name = cfg->name;
+-	const char * const *qmenu = cfg->qmenu;
+-	const s64 *qmenu_int = cfg->qmenu_int;
+-	enum v4l2_ctrl_type type = cfg->type;
+-	u32 flags = cfg->flags;
+-	s64 min = cfg->min;
+-	s64 max = cfg->max;
+-	u64 step = cfg->step;
+-	s64 def = cfg->def;
+-
+-	if (name == NULL)
+-		v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step,
+-								&def, &flags);
+-
+-	is_menu = (type == V4L2_CTRL_TYPE_MENU ||
+-		   type == V4L2_CTRL_TYPE_INTEGER_MENU);
+-	if (is_menu)
+-		WARN_ON(step);
+-	else
+-		WARN_ON(cfg->menu_skip_mask);
+-	if (type == V4L2_CTRL_TYPE_MENU && !qmenu) {
+-		qmenu = v4l2_ctrl_get_menu(cfg->id);
+-	} else if (type == V4L2_CTRL_TYPE_INTEGER_MENU && !qmenu_int) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-
+-	ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name,
+-			type, min, max,
+-			is_menu ? cfg->menu_skip_mask : step, def,
+-			cfg->dims, cfg->elem_size,
+-			flags, qmenu, qmenu_int, cfg->p_def, priv);
+-	if (ctrl)
+-		ctrl->is_private = cfg->is_private;
+-	return ctrl;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_new_custom);
+-
+-/* Helper function for standard non-menu controls */
+-struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
+-			const struct v4l2_ctrl_ops *ops,
+-			u32 id, s64 min, s64 max, u64 step, s64 def)
+-{
+-	const char *name;
+-	enum v4l2_ctrl_type type;
+-	u32 flags;
+-
+-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+-	if (type == V4L2_CTRL_TYPE_MENU ||
+-	    type == V4L2_CTRL_TYPE_INTEGER_MENU ||
+-	    type >= V4L2_CTRL_COMPOUND_TYPES) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+-			     min, max, step, def, NULL, 0,
+-			     flags, NULL, NULL, ptr_null, NULL);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_new_std);
+-
+-/* Helper function for standard menu controls */
+-struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
+-			const struct v4l2_ctrl_ops *ops,
+-			u32 id, u8 _max, u64 mask, u8 _def)
+-{
+-	const char * const *qmenu = NULL;
+-	const s64 *qmenu_int = NULL;
+-	unsigned int qmenu_int_len = 0;
+-	const char *name;
+-	enum v4l2_ctrl_type type;
+-	s64 min;
+-	s64 max = _max;
+-	s64 def = _def;
+-	u64 step;
+-	u32 flags;
+-
+-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+-
+-	if (type == V4L2_CTRL_TYPE_MENU)
+-		qmenu = v4l2_ctrl_get_menu(id);
+-	else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
+-		qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len);
+-
+-	if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+-			     0, max, mask, def, NULL, 0,
+-			     flags, qmenu, qmenu_int, ptr_null, NULL);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_new_std_menu);
+-
+-/* Helper function for standard menu controls with driver defined menu */
+-struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl,
+-			const struct v4l2_ctrl_ops *ops, u32 id, u8 _max,
+-			u64 mask, u8 _def, const char * const *qmenu)
+-{
+-	enum v4l2_ctrl_type type;
+-	const char *name;
+-	u32 flags;
+-	u64 step;
+-	s64 min;
+-	s64 max = _max;
+-	s64 def = _def;
+-
+-	/* v4l2_ctrl_new_std_menu_items() should only be called for
+-	 * standard controls without a standard menu.
+-	 */
+-	if (v4l2_ctrl_get_menu(id)) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-
+-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+-	if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+-			     0, max, mask, def, NULL, 0,
+-			     flags, qmenu, NULL, ptr_null, NULL);
+-
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items);
+-
+-/* Helper function for standard compound controls */
+-struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl,
+-				const struct v4l2_ctrl_ops *ops, u32 id,
+-				const union v4l2_ctrl_ptr p_def)
+-{
+-	const char *name;
+-	enum v4l2_ctrl_type type;
+-	u32 flags;
+-	s64 min, max, step, def;
+-
+-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+-	if (type < V4L2_CTRL_COMPOUND_TYPES) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+-			     min, max, step, def, NULL, 0,
+-			     flags, NULL, NULL, p_def, NULL);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_new_std_compound);
+-
+-/* Helper function for standard integer menu controls */
+-struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
+-			const struct v4l2_ctrl_ops *ops,
+-			u32 id, u8 _max, u8 _def, const s64 *qmenu_int)
+-{
+-	const char *name;
+-	enum v4l2_ctrl_type type;
+-	s64 min;
+-	u64 step;
+-	s64 max = _max;
+-	s64 def = _def;
+-	u32 flags;
+-
+-	v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+-	if (type != V4L2_CTRL_TYPE_INTEGER_MENU) {
+-		handler_set_err(hdl, -EINVAL);
+-		return NULL;
+-	}
+-	return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+-			     0, max, 0, def, NULL, 0,
+-			     flags, NULL, qmenu_int, ptr_null, NULL);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_new_int_menu);
+-
+-/* Add the controls from another handler to our own. */
+-int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl,
+-			  struct v4l2_ctrl_handler *add,
+-			  bool (*filter)(const struct v4l2_ctrl *ctrl),
+-			  bool from_other_dev)
+-{
+-	struct v4l2_ctrl_ref *ref;
+-	int ret = 0;
+-
+-	/* Do nothing if either handler is NULL or if they are the same */
+-	if (!hdl || !add || hdl == add)
+-		return 0;
+-	if (hdl->error)
+-		return hdl->error;
+-	mutex_lock(add->lock);
+-	list_for_each_entry(ref, &add->ctrl_refs, node) {
+-		struct v4l2_ctrl *ctrl = ref->ctrl;
+-
+-		/* Skip handler-private controls. */
+-		if (ctrl->is_private)
+-			continue;
+-		/* And control classes */
+-		if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
+-			continue;
+-		/* Filter any unwanted controls */
+-		if (filter && !filter(ctrl))
+-			continue;
+-		ret = handler_new_ref(hdl, ctrl, NULL, from_other_dev, false);
+-		if (ret)
+-			break;
+-	}
+-	mutex_unlock(add->lock);
+-	return ret;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_add_handler);
+-
+-bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl)
+-{
+-	if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX)
+-		return true;
+-	if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX)
+-		return true;
+-	switch (ctrl->id) {
+-	case V4L2_CID_AUDIO_MUTE:
+-	case V4L2_CID_AUDIO_VOLUME:
+-	case V4L2_CID_AUDIO_BALANCE:
+-	case V4L2_CID_AUDIO_BASS:
+-	case V4L2_CID_AUDIO_TREBLE:
+-	case V4L2_CID_AUDIO_LOUDNESS:
+-		return true;
+-	default:
+-		break;
+-	}
+-	return false;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_radio_filter);
+-
+-/* Cluster controls */
+-void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls)
+-{
+-	bool has_volatiles = false;
+-	int i;
+-
+-	/* The first control is the master control and it must not be NULL */
+-	if (WARN_ON(ncontrols == 0 || controls[0] == NULL))
+-		return;
+-
+-	for (i = 0; i < ncontrols; i++) {
+-		if (controls[i]) {
+-			controls[i]->cluster = controls;
+-			controls[i]->ncontrols = ncontrols;
+-			if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE)
+-				has_volatiles = true;
+-		}
+-	}
+-	controls[0]->has_volatiles = has_volatiles;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_cluster);
+-
+-void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls,
+-			    u8 manual_val, bool set_volatile)
+-{
+-	struct v4l2_ctrl *master = controls[0];
+-	u32 flag = 0;
+-	int i;
+-
+-	v4l2_ctrl_cluster(ncontrols, controls);
+-	WARN_ON(ncontrols <= 1);
+-	WARN_ON(manual_val < master->minimum || manual_val > master->maximum);
+-	WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl));
+-	master->is_auto = true;
+-	master->has_volatiles = set_volatile;
+-	master->manual_mode_value = manual_val;
+-	master->flags |= V4L2_CTRL_FLAG_UPDATE;
+-
+-	if (!is_cur_manual(master))
+-		flag = V4L2_CTRL_FLAG_INACTIVE |
+-			(set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0);
+-
+-	for (i = 1; i < ncontrols; i++)
+-		if (controls[i])
+-			controls[i]->flags |= flag;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_auto_cluster);
+-
+-/* Activate/deactivate a control. */
+-void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active)
+-{
+-	/* invert since the actual flag is called 'inactive' */
+-	bool inactive = !active;
+-	bool old;
+-
+-	if (ctrl == NULL)
+-		return;
+-
+-	if (inactive)
+-		/* set V4L2_CTRL_FLAG_INACTIVE */
+-		old = test_and_set_bit(4, &ctrl->flags);
+-	else
+-		/* clear V4L2_CTRL_FLAG_INACTIVE */
+-		old = test_and_clear_bit(4, &ctrl->flags);
+-	if (old != inactive)
+-		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_activate);
+-
+-void __v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed)
+-{
+-	bool old;
+-
+-	if (ctrl == NULL)
+-		return;
+-
+-	lockdep_assert_held(ctrl->handler->lock);
+-
+-	if (grabbed)
+-		/* set V4L2_CTRL_FLAG_GRABBED */
+-		old = test_and_set_bit(1, &ctrl->flags);
+-	else
+-		/* clear V4L2_CTRL_FLAG_GRABBED */
+-		old = test_and_clear_bit(1, &ctrl->flags);
+-	if (old != grabbed)
+-		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
+-}
+-EXPORT_SYMBOL(__v4l2_ctrl_grab);
+-
+-/* Log the control name and value */
+-static void log_ctrl(const struct v4l2_ctrl *ctrl,
+-		     const char *prefix, const char *colon)
+-{
+-	if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY))
+-		return;
+-	if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
+-		return;
+-
+-	pr_info("%s%s%s: ", prefix, colon, ctrl->name);
+-
+-	ctrl->type_ops->log(ctrl);
+-
+-	if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE |
+-			   V4L2_CTRL_FLAG_GRABBED |
+-			   V4L2_CTRL_FLAG_VOLATILE)) {
+-		if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
+-			pr_cont(" inactive");
+-		if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)
+-			pr_cont(" grabbed");
+-		if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE)
+-			pr_cont(" volatile");
+-	}
+-	pr_cont("\n");
+-}
+-
+-/* Log all controls owned by the handler */
+-void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl,
+-				  const char *prefix)
+-{
+-	struct v4l2_ctrl *ctrl;
+-	const char *colon = "";
+-	int len;
+-
+-	if (hdl == NULL)
+-		return;
+-	if (prefix == NULL)
+-		prefix = "";
+-	len = strlen(prefix);
+-	if (len && prefix[len - 1] != ' ')
+-		colon = ": ";
+-	mutex_lock(hdl->lock);
+-	list_for_each_entry(ctrl, &hdl->ctrls, node)
+-		if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED))
+-			log_ctrl(ctrl, prefix, colon);
+-	mutex_unlock(hdl->lock);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_handler_log_status);
+-
+-int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd)
+-{
+-	v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
+-	return 0;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status);
+-
+-/* Call s_ctrl for all controls owned by the handler */
+-int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
+-{
+-	struct v4l2_ctrl *ctrl;
+-	int ret = 0;
+-
+-	if (hdl == NULL)
+-		return 0;
+-
+-	lockdep_assert_held(hdl->lock);
+-
+-	list_for_each_entry(ctrl, &hdl->ctrls, node)
+-		ctrl->done = false;
+-
+-	list_for_each_entry(ctrl, &hdl->ctrls, node) {
+-		struct v4l2_ctrl *master = ctrl->cluster[0];
+-		int i;
+-
+-		/* Skip if this control was already handled by a cluster. */
+-		/* Skip button controls and read-only controls. */
+-		if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON ||
+-		    (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
+-			continue;
+-
+-		for (i = 0; i < master->ncontrols; i++) {
+-			if (master->cluster[i]) {
+-				cur_to_new(master->cluster[i]);
+-				master->cluster[i]->is_new = 1;
+-				master->cluster[i]->done = true;
+-			}
+-		}
+-		ret = call_op(master, s_ctrl);
+-		if (ret)
+-			break;
+-	}
+-
+-	return ret;
+-}
+-EXPORT_SYMBOL_GPL(__v4l2_ctrl_handler_setup);
+-
+-int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
+-{
+-	int ret;
+-
+-	if (hdl == NULL)
+-		return 0;
+-
+-	mutex_lock(hdl->lock);
+-	ret = __v4l2_ctrl_handler_setup(hdl);
+-	mutex_unlock(hdl->lock);
+-
+-	return ret;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_handler_setup);
+-
+-/* Implement VIDIOC_QUERY_EXT_CTRL */
+-int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc)
+-{
+-	const unsigned next_flags = V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND;
+-	u32 id = qc->id & V4L2_CTRL_ID_MASK;
+-	struct v4l2_ctrl_ref *ref;
+-	struct v4l2_ctrl *ctrl;
+-
+-	if (hdl == NULL)
+-		return -EINVAL;
+-
+-	mutex_lock(hdl->lock);
+-
+-	/* Try to find it */
+-	ref = find_ref(hdl, id);
+-
+-	if ((qc->id & next_flags) && !list_empty(&hdl->ctrl_refs)) {
+-		bool is_compound;
+-		/* Match any control that is not hidden */
+-		unsigned mask = 1;
+-		bool match = false;
+-
+-		if ((qc->id & next_flags) == V4L2_CTRL_FLAG_NEXT_COMPOUND) {
+-			/* Match any hidden control */
+-			match = true;
+-		} else if ((qc->id & next_flags) == next_flags) {
+-			/* Match any control, compound or not */
+-			mask = 0;
+-		}
+-
+-		/* Find the next control with ID > qc->id */
+-
+-		/* Did we reach the end of the control list? */
+-		if (id >= node2id(hdl->ctrl_refs.prev)) {
+-			ref = NULL; /* Yes, so there is no next control */
+-		} else if (ref) {
+-			/* We found a control with the given ID, so just get
+-			   the next valid one in the list. */
+-			list_for_each_entry_continue(ref, &hdl->ctrl_refs, node) {
+-				is_compound = ref->ctrl->is_array ||
+-					ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
+-				if (id < ref->ctrl->id &&
+-				    (is_compound & mask) == match)
+-					break;
+-			}
+-			if (&ref->node == &hdl->ctrl_refs)
+-				ref = NULL;
+-		} else {
+-			/* No control with the given ID exists, so start
+-			   searching for the next largest ID. We know there
+-			   is one, otherwise the first 'if' above would have
+-			   been true. */
+-			list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+-				is_compound = ref->ctrl->is_array ||
+-					ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
+-				if (id < ref->ctrl->id &&
+-				    (is_compound & mask) == match)
+-					break;
+-			}
+-			if (&ref->node == &hdl->ctrl_refs)
+-				ref = NULL;
+-		}
+-	}
+-	mutex_unlock(hdl->lock);
+-
+-	if (!ref)
+-		return -EINVAL;
+-
+-	ctrl = ref->ctrl;
+-	memset(qc, 0, sizeof(*qc));
+-	if (id >= V4L2_CID_PRIVATE_BASE)
+-		qc->id = id;
+-	else
+-		qc->id = ctrl->id;
+-	strscpy(qc->name, ctrl->name, sizeof(qc->name));
+-	qc->flags = user_flags(ctrl);
+-	qc->type = ctrl->type;
+-	qc->elem_size = ctrl->elem_size;
+-	qc->elems = ctrl->elems;
+-	qc->nr_of_dims = ctrl->nr_of_dims;
+-	memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0]));
+-	qc->minimum = ctrl->minimum;
+-	qc->maximum = ctrl->maximum;
+-	qc->default_value = ctrl->default_value;
+-	if (ctrl->type == V4L2_CTRL_TYPE_MENU
+-	    || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
+-		qc->step = 1;
+-	else
+-		qc->step = ctrl->step;
+-	return 0;
+-}
+-EXPORT_SYMBOL(v4l2_query_ext_ctrl);
+-
+-/* Implement VIDIOC_QUERYCTRL */
+-int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
+-{
+-	struct v4l2_query_ext_ctrl qec = { qc->id };
+-	int rc;
+-
+-	rc = v4l2_query_ext_ctrl(hdl, &qec);
+-	if (rc)
+-		return rc;
+-
+-	qc->id = qec.id;
+-	qc->type = qec.type;
+-	qc->flags = qec.flags;
+-	strscpy(qc->name, qec.name, sizeof(qc->name));
+-	switch (qc->type) {
+-	case V4L2_CTRL_TYPE_INTEGER:
+-	case V4L2_CTRL_TYPE_BOOLEAN:
+-	case V4L2_CTRL_TYPE_MENU:
+-	case V4L2_CTRL_TYPE_INTEGER_MENU:
+-	case V4L2_CTRL_TYPE_STRING:
+-	case V4L2_CTRL_TYPE_BITMASK:
+-		qc->minimum = qec.minimum;
+-		qc->maximum = qec.maximum;
+-		qc->step = qec.step;
+-		qc->default_value = qec.default_value;
+-		break;
+-	default:
+-		qc->minimum = 0;
+-		qc->maximum = 0;
+-		qc->step = 0;
+-		qc->default_value = 0;
+-		break;
+-	}
+-	return 0;
+-}
+-EXPORT_SYMBOL(v4l2_queryctrl);
+-
+-/* Implement VIDIOC_QUERYMENU */
+-int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm)
+-{
+-	struct v4l2_ctrl *ctrl;
+-	u32 i = qm->index;
+-
+-	ctrl = v4l2_ctrl_find(hdl, qm->id);
+-	if (!ctrl)
+-		return -EINVAL;
+-
+-	qm->reserved = 0;
+-	/* Sanity checks */
+-	switch (ctrl->type) {
+-	case V4L2_CTRL_TYPE_MENU:
+-		if (ctrl->qmenu == NULL)
+-			return -EINVAL;
+-		break;
+-	case V4L2_CTRL_TYPE_INTEGER_MENU:
+-		if (ctrl->qmenu_int == NULL)
+-			return -EINVAL;
+-		break;
+-	default:
+-		return -EINVAL;
+-	}
+-
+-	if (i < ctrl->minimum || i > ctrl->maximum)
+-		return -EINVAL;
+-
+-	/* Use mask to see if this menu item should be skipped */
+-	if (ctrl->menu_skip_mask & (1ULL << i))
+-		return -EINVAL;
+-	/* Empty menu items should also be skipped */
+-	if (ctrl->type == V4L2_CTRL_TYPE_MENU) {
+-		if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0')
+-			return -EINVAL;
+-		strscpy(qm->name, ctrl->qmenu[i], sizeof(qm->name));
+-	} else {
+-		qm->value = ctrl->qmenu_int[i];
+-	}
+-	return 0;
+-}
+-EXPORT_SYMBOL(v4l2_querymenu);
+-
+-static int v4l2_ctrl_request_clone(struct v4l2_ctrl_handler *hdl,
+-				   const struct v4l2_ctrl_handler *from)
+-{
+-	struct v4l2_ctrl_ref *ref;
+-	int err = 0;
+-
+-	if (WARN_ON(!hdl || hdl == from))
+-		return -EINVAL;
+-
+-	if (hdl->error)
+-		return hdl->error;
+-
+-	WARN_ON(hdl->lock != &hdl->_lock);
+-
+-	mutex_lock(from->lock);
+-	list_for_each_entry(ref, &from->ctrl_refs, node) {
+-		struct v4l2_ctrl *ctrl = ref->ctrl;
+-		struct v4l2_ctrl_ref *new_ref;
+-
+-		/* Skip refs inherited from other devices */
+-		if (ref->from_other_dev)
+-			continue;
+-		err = handler_new_ref(hdl, ctrl, &new_ref, false, true);
+-		if (err)
+-			break;
+-	}
+-	mutex_unlock(from->lock);
+-	return err;
+-}
+-
+-static void v4l2_ctrl_request_queue(struct media_request_object *obj)
+-{
+-	struct v4l2_ctrl_handler *hdl =
+-		container_of(obj, struct v4l2_ctrl_handler, req_obj);
+-	struct v4l2_ctrl_handler *main_hdl = obj->priv;
+-
+-	mutex_lock(main_hdl->lock);
+-	list_add_tail(&hdl->requests_queued, &main_hdl->requests_queued);
+-	hdl->request_is_queued = true;
+-	mutex_unlock(main_hdl->lock);
+-}
+-
+-static void v4l2_ctrl_request_unbind(struct media_request_object *obj)
+-{
+-	struct v4l2_ctrl_handler *hdl =
+-		container_of(obj, struct v4l2_ctrl_handler, req_obj);
+-	struct v4l2_ctrl_handler *main_hdl = obj->priv;
+-
+-	mutex_lock(main_hdl->lock);
+-	list_del_init(&hdl->requests);
+-	if (hdl->request_is_queued) {
+-		list_del_init(&hdl->requests_queued);
+-		hdl->request_is_queued = false;
+-	}
+-	mutex_unlock(main_hdl->lock);
+-}
+-
+-static void v4l2_ctrl_request_release(struct media_request_object *obj)
+-{
+-	struct v4l2_ctrl_handler *hdl =
+-		container_of(obj, struct v4l2_ctrl_handler, req_obj);
+-
+-	v4l2_ctrl_handler_free(hdl);
+-	kfree(hdl);
+-}
+-
+-static const struct media_request_object_ops req_ops = {
+-	.queue = v4l2_ctrl_request_queue,
+-	.unbind = v4l2_ctrl_request_unbind,
+-	.release = v4l2_ctrl_request_release,
+-};
+-
+-struct v4l2_ctrl_handler *v4l2_ctrl_request_hdl_find(struct media_request *req,
+-					struct v4l2_ctrl_handler *parent)
+-{
+-	struct media_request_object *obj;
+-
+-	if (WARN_ON(req->state != MEDIA_REQUEST_STATE_VALIDATING &&
+-		    req->state != MEDIA_REQUEST_STATE_QUEUED))
+-		return NULL;
+-
+-	obj = media_request_object_find(req, &req_ops, parent);
+-	if (obj)
+-		return container_of(obj, struct v4l2_ctrl_handler, req_obj);
+-	return NULL;
+-}
+-EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_find);
+-
+-struct v4l2_ctrl *
+-v4l2_ctrl_request_hdl_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
+-{
+-	struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
+-
+-	return (ref && ref->valid_p_req) ? ref->ctrl : NULL;
+-}
+-EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_ctrl_find);
+-
+-static int v4l2_ctrl_request_bind(struct media_request *req,
+-			   struct v4l2_ctrl_handler *hdl,
+-			   struct v4l2_ctrl_handler *from)
+-{
+-	int ret;
+-
+-	ret = v4l2_ctrl_request_clone(hdl, from);
+-
+-	if (!ret) {
+-		ret = media_request_object_bind(req, &req_ops,
+-						from, false, &hdl->req_obj);
+-		if (!ret) {
+-			mutex_lock(from->lock);
+-			list_add_tail(&hdl->requests, &from->requests);
+-			mutex_unlock(from->lock);
+-		}
+-	}
+-	return ret;
+-}
+-
+-/* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS:
+-
+-   It is not a fully atomic operation, just best-effort only. After all, if
+-   multiple controls have to be set through multiple i2c writes (for example)
+-   then some initial writes may succeed while others fail. Thus leaving the
+-   system in an inconsistent state. The question is how much effort you are
+-   willing to spend on trying to make something atomic that really isn't.
+-
+-   From the point of view of an application the main requirement is that
+-   when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an
+-   error should be returned without actually affecting any controls.
+-
+-   If all the values are correct, then it is acceptable to just give up
+-   in case of low-level errors.
+-
+-   It is important though that the application can tell when only a partial
+-   configuration was done. The way we do that is through the error_idx field
+-   of struct v4l2_ext_controls: if that is equal to the count field then no
+-   controls were affected. Otherwise all controls before that index were
+-   successful in performing their 'get' or 'set' operation, the control at
+-   the given index failed, and you don't know what happened with the controls
+-   after the failed one. Since if they were part of a control cluster they
+-   could have been successfully processed (if a cluster member was encountered
+-   at index < error_idx), they could have failed (if a cluster member was at
+-   error_idx), or they may not have been processed yet (if the first cluster
+-   member appeared after error_idx).
+-
+-   It is all fairly theoretical, though. In practice all you can do is to
+-   bail out. If error_idx == count, then it is an application bug. If
+-   error_idx < count then it is only an application bug if the error code was
+-   EBUSY. That usually means that something started streaming just when you
+-   tried to set the controls. In all other cases it is a driver/hardware
+-   problem and all you can do is to retry or bail out.
+-
+-   Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that
+-   never modifies controls the error_idx is just set to whatever control
+-   has an invalid value.
+- */
+-
+-/* Prepare for the extended g/s/try functions.
+-   Find the controls in the control array and do some basic checks. */
+-static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl,
+-			     struct v4l2_ext_controls *cs,
+-			     struct v4l2_ctrl_helper *helpers,
+-			     struct video_device *vdev,
+-			     bool get)
+-{
+-	struct v4l2_ctrl_helper *h;
+-	bool have_clusters = false;
+-	u32 i;
+-
+-	for (i = 0, h = helpers; i < cs->count; i++, h++) {
+-		struct v4l2_ext_control *c = &cs->controls[i];
+-		struct v4l2_ctrl_ref *ref;
+-		struct v4l2_ctrl *ctrl;
+-		u32 id = c->id & V4L2_CTRL_ID_MASK;
+-
+-		cs->error_idx = i;
+-
+-		if (cs->which &&
+-		    cs->which != V4L2_CTRL_WHICH_DEF_VAL &&
+-		    cs->which != V4L2_CTRL_WHICH_REQUEST_VAL &&
+-		    V4L2_CTRL_ID2WHICH(id) != cs->which) {
+-			dprintk(vdev,
+-				"invalid which 0x%x or control id 0x%x\n",
+-				cs->which, id);
+-			return -EINVAL;
+-		}
+-
+-		/* Old-style private controls are not allowed for
+-		   extended controls */
+-		if (id >= V4L2_CID_PRIVATE_BASE) {
+-			dprintk(vdev,
+-				"old-style private controls not allowed\n");
+-			return -EINVAL;
+-		}
+-		ref = find_ref_lock(hdl, id);
+-		if (ref == NULL) {
+-			dprintk(vdev, "cannot find control id 0x%x\n", id);
+-			return -EINVAL;
+-		}
+-		h->ref = ref;
+-		ctrl = ref->ctrl;
+-		if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) {
+-			dprintk(vdev, "control id 0x%x is disabled\n", id);
+-			return -EINVAL;
+-		}
+-
+-		if (ctrl->cluster[0]->ncontrols > 1)
+-			have_clusters = true;
+-		if (ctrl->cluster[0] != ctrl)
+-			ref = find_ref_lock(hdl, ctrl->cluster[0]->id);
+-		if (ctrl->is_ptr && !ctrl->is_string) {
+-			unsigned tot_size = ctrl->elems * ctrl->elem_size;
+-
+-			if (c->size < tot_size) {
+-				/*
+-				 * In the get case the application first
+-				 * queries to obtain the size of the control.
+-				 */
+-				if (get) {
+-					c->size = tot_size;
+-					return -ENOSPC;
+-				}
+-				dprintk(vdev,
+-					"pointer control id 0x%x size too small, %d bytes but %d bytes needed\n",
+-					id, c->size, tot_size);
+-				return -EFAULT;
+-			}
+-			c->size = tot_size;
+-		}
+-		/* Store the ref to the master control of the cluster */
+-		h->mref = ref;
+-		/* Initially set next to 0, meaning that there is no other
+-		   control in this helper array belonging to the same
+-		   cluster */
+-		h->next = 0;
+-	}
+-
+-	/* We are done if there were no controls that belong to a multi-
+-	   control cluster. */
+-	if (!have_clusters)
+-		return 0;
+-
+-	/* The code below figures out in O(n) time which controls in the list
+-	   belong to the same cluster. */
+-
+-	/* This has to be done with the handler lock taken. */
+-	mutex_lock(hdl->lock);
+-
+-	/* First zero the helper field in the master control references */
+-	for (i = 0; i < cs->count; i++)
+-		helpers[i].mref->helper = NULL;
+-	for (i = 0, h = helpers; i < cs->count; i++, h++) {
+-		struct v4l2_ctrl_ref *mref = h->mref;
+-
+-		/* If the mref->helper is set, then it points to an earlier
+-		   helper that belongs to the same cluster. */
+-		if (mref->helper) {
+-			/* Set the next field of mref->helper to the current
+-			   index: this means that that earlier helper now
+-			   points to the next helper in the same cluster. */
+-			mref->helper->next = i;
+-			/* mref should be set only for the first helper in the
+-			   cluster, clear the others. */
+-			h->mref = NULL;
+-		}
+-		/* Point the mref helper to the current helper struct. */
+-		mref->helper = h;
+-	}
+-	mutex_unlock(hdl->lock);
+-	return 0;
+-}
+-
+-/* Handles the corner case where cs->count == 0. It checks whether the
+-   specified control class exists. If that class ID is 0, then it checks
+-   whether there are any controls at all. */
+-static int class_check(struct v4l2_ctrl_handler *hdl, u32 which)
+-{
+-	if (which == 0 || which == V4L2_CTRL_WHICH_DEF_VAL ||
+-	    which == V4L2_CTRL_WHICH_REQUEST_VAL)
+-		return 0;
+-	return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL;
+-}
+-
+-/*
+- * Get extended controls. Allocates the helpers array if needed.
+- *
+- * Note that v4l2_g_ext_ctrls_common() with 'which' set to
+- * V4L2_CTRL_WHICH_REQUEST_VAL is only called if the request was
+- * completed, and in that case valid_p_req is true for all controls.
+- */
+-static int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl,
+-				   struct v4l2_ext_controls *cs,
+-				   struct video_device *vdev)
+-{
+-	struct v4l2_ctrl_helper helper[4];
+-	struct v4l2_ctrl_helper *helpers = helper;
+-	int ret;
+-	int i, j;
+-	bool is_default, is_request;
+-
+-	is_default = (cs->which == V4L2_CTRL_WHICH_DEF_VAL);
+-	is_request = (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL);
+-
+-	cs->error_idx = cs->count;
+-	cs->which = V4L2_CTRL_ID2WHICH(cs->which);
+-
+-	if (hdl == NULL)
+-		return -EINVAL;
+-
+-	if (cs->count == 0)
+-		return class_check(hdl, cs->which);
+-
+-	if (cs->count > ARRAY_SIZE(helper)) {
+-		helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
+-					 GFP_KERNEL);
+-		if (helpers == NULL)
+-			return -ENOMEM;
+-	}
+-
+-	ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, true);
+-	cs->error_idx = cs->count;
+-
+-	for (i = 0; !ret && i < cs->count; i++)
+-		if (helpers[i].ref->ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
+-			ret = -EACCES;
+-
+-	for (i = 0; !ret && i < cs->count; i++) {
+-		struct v4l2_ctrl *master;
+-		bool is_volatile = false;
+-		u32 idx = i;
+-
+-		if (helpers[i].mref == NULL)
+-			continue;
+-
+-		master = helpers[i].mref->ctrl;
+-		cs->error_idx = i;
+-
+-		v4l2_ctrl_lock(master);
+-
+-		/*
+-		 * g_volatile_ctrl will update the new control values.
+-		 * This makes no sense for V4L2_CTRL_WHICH_DEF_VAL and
+-		 * V4L2_CTRL_WHICH_REQUEST_VAL. In the case of requests
+-		 * it is v4l2_ctrl_request_complete() that copies the
+-		 * volatile controls at the time of request completion
+-		 * to the request, so you don't want to do that again.
+-		 */
+-		if (!is_default && !is_request &&
+-		    ((master->flags & V4L2_CTRL_FLAG_VOLATILE) ||
+-		    (master->has_volatiles && !is_cur_manual(master)))) {
+-			for (j = 0; j < master->ncontrols; j++)
+-				cur_to_new(master->cluster[j]);
+-			ret = call_op(master, g_volatile_ctrl);
+-			is_volatile = true;
+-		}
+-
+-		if (ret) {
+-			v4l2_ctrl_unlock(master);
+-			break;
+-		}
+-
+-		/*
+-		 * Copy the default value (if is_default is true), the
+-		 * request value (if is_request is true and p_req is valid),
+-		 * the new volatile value (if is_volatile is true) or the
+-		 * current value.
+-		 */
+-		do {
+-			struct v4l2_ctrl_ref *ref = helpers[idx].ref;
+-
+-			if (is_default)
+-				ret = def_to_user(cs->controls + idx, ref->ctrl);
+-			else if (is_request && ref->valid_p_req)
+-				ret = req_to_user(cs->controls + idx, ref);
+-			else if (is_volatile)
+-				ret = new_to_user(cs->controls + idx, ref->ctrl);
+-			else
+-				ret = cur_to_user(cs->controls + idx, ref->ctrl);
+-			idx = helpers[idx].next;
+-		} while (!ret && idx);
+-
+-		v4l2_ctrl_unlock(master);
+-	}
+-
+-	if (cs->count > ARRAY_SIZE(helper))
+-		kvfree(helpers);
+-	return ret;
+-}
+-
+-static struct media_request_object *
+-v4l2_ctrls_find_req_obj(struct v4l2_ctrl_handler *hdl,
+-			struct media_request *req, bool set)
+-{
+-	struct media_request_object *obj;
+-	struct v4l2_ctrl_handler *new_hdl;
+-	int ret;
+-
+-	if (IS_ERR(req))
+-		return ERR_CAST(req);
+-
+-	if (set && WARN_ON(req->state != MEDIA_REQUEST_STATE_UPDATING))
+-		return ERR_PTR(-EBUSY);
+-
+-	obj = media_request_object_find(req, &req_ops, hdl);
+-	if (obj)
+-		return obj;
+-	if (!set)
+-		return ERR_PTR(-ENOENT);
+-
+-	new_hdl = kzalloc(sizeof(*new_hdl), GFP_KERNEL);
+-	if (!new_hdl)
+-		return ERR_PTR(-ENOMEM);
+-
+-	obj = &new_hdl->req_obj;
+-	ret = v4l2_ctrl_handler_init(new_hdl, (hdl->nr_of_buckets - 1) * 8);
+-	if (!ret)
+-		ret = v4l2_ctrl_request_bind(req, new_hdl, hdl);
+-	if (ret) {
+-		kfree(new_hdl);
+-
+-		return ERR_PTR(ret);
+-	}
+-
+-	media_request_object_get(obj);
+-	return obj;
+-}
+-
+-int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct video_device *vdev,
+-		     struct media_device *mdev, struct v4l2_ext_controls *cs)
+-{
+-	struct media_request_object *obj = NULL;
+-	struct media_request *req = NULL;
+-	int ret;
+-
+-	if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
+-		if (!mdev || cs->request_fd < 0)
+-			return -EINVAL;
+-
+-		req = media_request_get_by_fd(mdev, cs->request_fd);
+-		if (IS_ERR(req))
+-			return PTR_ERR(req);
+-
+-		if (req->state != MEDIA_REQUEST_STATE_COMPLETE) {
+-			media_request_put(req);
+-			return -EACCES;
+-		}
+-
+-		ret = media_request_lock_for_access(req);
+-		if (ret) {
+-			media_request_put(req);
+-			return ret;
+-		}
+-
+-		obj = v4l2_ctrls_find_req_obj(hdl, req, false);
+-		if (IS_ERR(obj)) {
+-			media_request_unlock_for_access(req);
+-			media_request_put(req);
+-			return PTR_ERR(obj);
+-		}
+-
+-		hdl = container_of(obj, struct v4l2_ctrl_handler,
+-				   req_obj);
+-	}
+-
+-	ret = v4l2_g_ext_ctrls_common(hdl, cs, vdev);
+-
+-	if (obj) {
+-		media_request_unlock_for_access(req);
+-		media_request_object_put(obj);
+-		media_request_put(req);
+-	}
+-	return ret;
+-}
+-EXPORT_SYMBOL(v4l2_g_ext_ctrls);
+-
+-/* Helper function to get a single control */
+-static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c)
+-{
+-	struct v4l2_ctrl *master = ctrl->cluster[0];
+-	int ret = 0;
+-	int i;
+-
+-	/* Compound controls are not supported. The new_to_user() and
+-	 * cur_to_user() calls below would need to be modified not to access
+-	 * userspace memory when called from get_ctrl().
+-	 */
+-	if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64)
+-		return -EINVAL;
+-
+-	if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
+-		return -EACCES;
+-
+-	v4l2_ctrl_lock(master);
+-	/* g_volatile_ctrl will update the current control values */
+-	if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
+-		for (i = 0; i < master->ncontrols; i++)
+-			cur_to_new(master->cluster[i]);
+-		ret = call_op(master, g_volatile_ctrl);
+-		new_to_user(c, ctrl);
+-	} else {
+-		cur_to_user(c, ctrl);
+-	}
+-	v4l2_ctrl_unlock(master);
+-	return ret;
+-}
+-
+-int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control)
+-{
+-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
+-	struct v4l2_ext_control c;
+-	int ret;
+-
+-	if (ctrl == NULL || !ctrl->is_int)
+-		return -EINVAL;
+-	ret = get_ctrl(ctrl, &c);
+-	control->value = c.value;
+-	return ret;
+-}
+-EXPORT_SYMBOL(v4l2_g_ctrl);
+-
+-s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl)
+-{
+-	struct v4l2_ext_control c;
+-
+-	/* It's a driver bug if this happens. */
+-	if (WARN_ON(!ctrl->is_int))
+-		return 0;
+-	c.value = 0;
+-	get_ctrl(ctrl, &c);
+-	return c.value;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_g_ctrl);
+-
+-s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl)
+-{
+-	struct v4l2_ext_control c;
+-
+-	/* It's a driver bug if this happens. */
+-	if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
+-		return 0;
+-	c.value64 = 0;
+-	get_ctrl(ctrl, &c);
+-	return c.value64;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64);
+-
+-
+-/* Core function that calls try/s_ctrl and ensures that the new value is
+-   copied to the current value on a set.
+-   Must be called with ctrl->handler->lock held. */
+-static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master,
+-			      bool set, u32 ch_flags)
+-{
+-	bool update_flag;
+-	int ret;
+-	int i;
+-
+-	/* Go through the cluster and either validate the new value or
+-	   (if no new value was set), copy the current value to the new
+-	   value, ensuring a consistent view for the control ops when
+-	   called. */
+-	for (i = 0; i < master->ncontrols; i++) {
+-		struct v4l2_ctrl *ctrl = master->cluster[i];
+-
+-		if (ctrl == NULL)
+-			continue;
+-
+-		if (!ctrl->is_new) {
+-			cur_to_new(ctrl);
+-			continue;
+-		}
+-		/* Check again: it may have changed since the
+-		   previous check in try_or_set_ext_ctrls(). */
+-		if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED))
+-			return -EBUSY;
+-	}
+-
+-	ret = call_op(master, try_ctrl);
+-
+-	/* Don't set if there is no change */
+-	if (ret || !set || !cluster_changed(master))
+-		return ret;
+-	ret = call_op(master, s_ctrl);
+-	if (ret)
+-		return ret;
+-
+-	/* If OK, then make the new values permanent. */
+-	update_flag = is_cur_manual(master) != is_new_manual(master);
+-
+-	for (i = 0; i < master->ncontrols; i++) {
+-		/*
+-		 * If we switch from auto to manual mode, and this cluster
+-		 * contains volatile controls, then all non-master controls
+-		 * have to be marked as changed. The 'new' value contains
+-		 * the volatile value (obtained by update_from_auto_cluster),
+-		 * which now has to become the current value.
+-		 */
+-		if (i && update_flag && is_new_manual(master) &&
+-		    master->has_volatiles && master->cluster[i])
+-			master->cluster[i]->has_changed = true;
+-
+-		new_to_cur(fh, master->cluster[i], ch_flags |
+-			((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0));
+-	}
+-	return 0;
+-}
+-
+-/* Validate controls. */
+-static int validate_ctrls(struct v4l2_ext_controls *cs,
+-			  struct v4l2_ctrl_helper *helpers,
+-			  struct video_device *vdev,
+-			  bool set)
+-{
+-	unsigned i;
+-	int ret = 0;
+-
+-	cs->error_idx = cs->count;
+-	for (i = 0; i < cs->count; i++) {
+-		struct v4l2_ctrl *ctrl = helpers[i].ref->ctrl;
+-		union v4l2_ctrl_ptr p_new;
+-
+-		cs->error_idx = i;
+-
+-		if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) {
+-			dprintk(vdev,
+-				"control id 0x%x is read-only\n",
+-				ctrl->id);
+-			return -EACCES;
+-		}
+-		/* This test is also done in try_set_control_cluster() which
+-		   is called in atomic context, so that has the final say,
+-		   but it makes sense to do an up-front check as well. Once
+-		   an error occurs in try_set_control_cluster() some other
+-		   controls may have been set already and we want to do a
+-		   best-effort to avoid that. */
+-		if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) {
+-			dprintk(vdev,
+-				"control id 0x%x is grabbed, cannot set\n",
+-				ctrl->id);
+-			return -EBUSY;
+-		}
+-		/*
+-		 * Skip validation for now if the payload needs to be copied
+-		 * from userspace into kernelspace. We'll validate those later.
+-		 */
+-		if (ctrl->is_ptr)
+-			continue;
+-		if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
+-			p_new.p_s64 = &cs->controls[i].value64;
+-		else
+-			p_new.p_s32 = &cs->controls[i].value;
+-		ret = validate_new(ctrl, p_new);
+-		if (ret)
+-			return ret;
+-	}
+-	return 0;
+-}
+-
+-/* Obtain the current volatile values of an autocluster and mark them
+-   as new. */
+-static void update_from_auto_cluster(struct v4l2_ctrl *master)
+-{
+-	int i;
+-
+-	for (i = 1; i < master->ncontrols; i++)
+-		cur_to_new(master->cluster[i]);
+-	if (!call_op(master, g_volatile_ctrl))
+-		for (i = 1; i < master->ncontrols; i++)
+-			if (master->cluster[i])
+-				master->cluster[i]->is_new = 1;
+-}
+-
+-/* Try or try-and-set controls */
+-static int try_set_ext_ctrls_common(struct v4l2_fh *fh,
+-				    struct v4l2_ctrl_handler *hdl,
+-				    struct v4l2_ext_controls *cs,
+-				    struct video_device *vdev, bool set)
+-{
+-	struct v4l2_ctrl_helper helper[4];
+-	struct v4l2_ctrl_helper *helpers = helper;
+-	unsigned i, j;
+-	int ret;
+-
+-	cs->error_idx = cs->count;
+-
+-	/* Default value cannot be changed */
+-	if (cs->which == V4L2_CTRL_WHICH_DEF_VAL) {
+-		dprintk(vdev, "%s: cannot change default value\n",
+-			video_device_node_name(vdev));
+-		return -EINVAL;
+-	}
+-
+-	cs->which = V4L2_CTRL_ID2WHICH(cs->which);
+-
+-	if (hdl == NULL) {
+-		dprintk(vdev, "%s: invalid null control handler\n",
+-			video_device_node_name(vdev));
+-		return -EINVAL;
+-	}
+-
+-	if (cs->count == 0)
+-		return class_check(hdl, cs->which);
+-
+-	if (cs->count > ARRAY_SIZE(helper)) {
+-		helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
+-					 GFP_KERNEL);
+-		if (!helpers)
+-			return -ENOMEM;
+-	}
+-	ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, false);
+-	if (!ret)
+-		ret = validate_ctrls(cs, helpers, vdev, set);
+-	if (ret && set)
+-		cs->error_idx = cs->count;
+-	for (i = 0; !ret && i < cs->count; i++) {
+-		struct v4l2_ctrl *master;
+-		u32 idx = i;
+-
+-		if (helpers[i].mref == NULL)
+-			continue;
+-
+-		cs->error_idx = i;
+-		master = helpers[i].mref->ctrl;
+-		v4l2_ctrl_lock(master);
+-
+-		/* Reset the 'is_new' flags of the cluster */
+-		for (j = 0; j < master->ncontrols; j++)
+-			if (master->cluster[j])
+-				master->cluster[j]->is_new = 0;
+-
+-		/* For volatile autoclusters that are currently in auto mode
+-		   we need to discover if it will be set to manual mode.
+-		   If so, then we have to copy the current volatile values
+-		   first since those will become the new manual values (which
+-		   may be overwritten by explicit new values from this set
+-		   of controls). */
+-		if (master->is_auto && master->has_volatiles &&
+-						!is_cur_manual(master)) {
+-			/* Pick an initial non-manual value */
+-			s32 new_auto_val = master->manual_mode_value + 1;
+-			u32 tmp_idx = idx;
+-
+-			do {
+-				/* Check if the auto control is part of the
+-				   list, and remember the new value. */
+-				if (helpers[tmp_idx].ref->ctrl == master)
+-					new_auto_val = cs->controls[tmp_idx].value;
+-				tmp_idx = helpers[tmp_idx].next;
+-			} while (tmp_idx);
+-			/* If the new value == the manual value, then copy
+-			   the current volatile values. */
+-			if (new_auto_val == master->manual_mode_value)
+-				update_from_auto_cluster(master);
+-		}
+-
+-		/* Copy the new caller-supplied control values.
+-		   user_to_new() sets 'is_new' to 1. */
+-		do {
+-			struct v4l2_ctrl *ctrl = helpers[idx].ref->ctrl;
+-
+-			ret = user_to_new(cs->controls + idx, ctrl);
+-			if (!ret && ctrl->is_ptr) {
+-				ret = validate_new(ctrl, ctrl->p_new);
+-				if (ret)
+-					dprintk(vdev,
+-						"failed to validate control %s (%d)\n",
+-						v4l2_ctrl_get_name(ctrl->id), ret);
+-			}
+-			idx = helpers[idx].next;
+-		} while (!ret && idx);
+-
+-		if (!ret)
+-			ret = try_or_set_cluster(fh, master,
+-						 !hdl->req_obj.req && set, 0);
+-		if (!ret && hdl->req_obj.req && set) {
+-			for (j = 0; j < master->ncontrols; j++) {
+-				struct v4l2_ctrl_ref *ref =
+-					find_ref(hdl, master->cluster[j]->id);
+-
+-				new_to_req(ref);
+-			}
+-		}
+-
+-		/* Copy the new values back to userspace. */
+-		if (!ret) {
+-			idx = i;
+-			do {
+-				ret = new_to_user(cs->controls + idx,
+-						helpers[idx].ref->ctrl);
+-				idx = helpers[idx].next;
+-			} while (!ret && idx);
+-		}
+-		v4l2_ctrl_unlock(master);
+-	}
+-
+-	if (cs->count > ARRAY_SIZE(helper))
+-		kvfree(helpers);
+-	return ret;
+-}
+-
+-static int try_set_ext_ctrls(struct v4l2_fh *fh,
+-			     struct v4l2_ctrl_handler *hdl,
+-			     struct video_device *vdev,
+-			     struct media_device *mdev,
+-			     struct v4l2_ext_controls *cs, bool set)
+-{
+-	struct media_request_object *obj = NULL;
+-	struct media_request *req = NULL;
+-	int ret;
+-
+-	if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
+-		if (!mdev) {
+-			dprintk(vdev, "%s: missing media device\n",
+-				video_device_node_name(vdev));
+-			return -EINVAL;
+-		}
+-
+-		if (cs->request_fd < 0) {
+-			dprintk(vdev, "%s: invalid request fd %d\n",
+-				video_device_node_name(vdev), cs->request_fd);
+-			return -EINVAL;
+-		}
+-
+-		req = media_request_get_by_fd(mdev, cs->request_fd);
+-		if (IS_ERR(req)) {
+-			dprintk(vdev, "%s: cannot find request fd %d\n",
+-				video_device_node_name(vdev), cs->request_fd);
+-			return PTR_ERR(req);
+-		}
+-
+-		ret = media_request_lock_for_update(req);
+-		if (ret) {
+-			dprintk(vdev, "%s: cannot lock request fd %d\n",
+-				video_device_node_name(vdev), cs->request_fd);
+-			media_request_put(req);
+-			return ret;
+-		}
+-
+-		obj = v4l2_ctrls_find_req_obj(hdl, req, set);
+-		if (IS_ERR(obj)) {
+-			dprintk(vdev,
+-				"%s: cannot find request object for request fd %d\n",
+-				video_device_node_name(vdev),
+-				cs->request_fd);
+-			media_request_unlock_for_update(req);
+-			media_request_put(req);
+-			return PTR_ERR(obj);
+-		}
+-		hdl = container_of(obj, struct v4l2_ctrl_handler,
+-				   req_obj);
+-	}
+-
+-	ret = try_set_ext_ctrls_common(fh, hdl, cs, vdev, set);
+-	if (ret)
+-		dprintk(vdev,
+-			"%s: try_set_ext_ctrls_common failed (%d)\n",
+-			video_device_node_name(vdev), ret);
+-
+-	if (obj) {
+-		media_request_unlock_for_update(req);
+-		media_request_object_put(obj);
+-		media_request_put(req);
+-	}
+-
+-	return ret;
+-}
+-
+-int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl,
+-		       struct video_device *vdev,
+-		       struct media_device *mdev,
+-		       struct v4l2_ext_controls *cs)
+-{
+-	return try_set_ext_ctrls(NULL, hdl, vdev, mdev, cs, false);
+-}
+-EXPORT_SYMBOL(v4l2_try_ext_ctrls);
+-
+-int v4l2_s_ext_ctrls(struct v4l2_fh *fh,
+-		     struct v4l2_ctrl_handler *hdl,
+-		     struct video_device *vdev,
+-		     struct media_device *mdev,
+-		     struct v4l2_ext_controls *cs)
+-{
+-	return try_set_ext_ctrls(fh, hdl, vdev, mdev, cs, true);
+-}
+-EXPORT_SYMBOL(v4l2_s_ext_ctrls);
+-
+-/* Helper function for VIDIOC_S_CTRL compatibility */
+-static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
+-{
+-	struct v4l2_ctrl *master = ctrl->cluster[0];
+-	int ret;
+-	int i;
+-
+-	/* Reset the 'is_new' flags of the cluster */
+-	for (i = 0; i < master->ncontrols; i++)
+-		if (master->cluster[i])
+-			master->cluster[i]->is_new = 0;
+-
+-	ret = validate_new(ctrl, ctrl->p_new);
+-	if (ret)
+-		return ret;
+-
+-	/* For autoclusters with volatiles that are switched from auto to
+-	   manual mode we have to update the current volatile values since
+-	   those will become the initial manual values after such a switch. */
+-	if (master->is_auto && master->has_volatiles && ctrl == master &&
+-	    !is_cur_manual(master) && ctrl->val == master->manual_mode_value)
+-		update_from_auto_cluster(master);
+-
+-	ctrl->is_new = 1;
+-	return try_or_set_cluster(fh, master, true, ch_flags);
+-}
+-
+-/* Helper function for VIDIOC_S_CTRL compatibility */
+-static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl,
+-			 struct v4l2_ext_control *c)
+-{
+-	int ret;
+-
+-	v4l2_ctrl_lock(ctrl);
+-	user_to_new(c, ctrl);
+-	ret = set_ctrl(fh, ctrl, 0);
+-	if (!ret)
+-		cur_to_user(c, ctrl);
+-	v4l2_ctrl_unlock(ctrl);
+-	return ret;
+-}
+-
+-int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
+-					struct v4l2_control *control)
+-{
+-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
+-	struct v4l2_ext_control c = { control->id };
+-	int ret;
+-
+-	if (ctrl == NULL || !ctrl->is_int)
+-		return -EINVAL;
+-
+-	if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
+-		return -EACCES;
+-
+-	c.value = control->value;
+-	ret = set_ctrl_lock(fh, ctrl, &c);
+-	control->value = c.value;
+-	return ret;
+-}
+-EXPORT_SYMBOL(v4l2_s_ctrl);
+-
+-int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val)
+-{
+-	lockdep_assert_held(ctrl->handler->lock);
+-
+-	/* It's a driver bug if this happens. */
+-	if (WARN_ON(!ctrl->is_int))
+-		return -EINVAL;
+-	ctrl->val = val;
+-	return set_ctrl(NULL, ctrl, 0);
+-}
+-EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl);
+-
+-int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val)
+-{
+-	lockdep_assert_held(ctrl->handler->lock);
+-
+-	/* It's a driver bug if this happens. */
+-	if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
+-		return -EINVAL;
+-	*ctrl->p_new.p_s64 = val;
+-	return set_ctrl(NULL, ctrl, 0);
+-}
+-EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64);
+-
+-int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s)
+-{
+-	lockdep_assert_held(ctrl->handler->lock);
+-
+-	/* It's a driver bug if this happens. */
+-	if (WARN_ON(ctrl->type != V4L2_CTRL_TYPE_STRING))
+-		return -EINVAL;
+-	strscpy(ctrl->p_new.p_char, s, ctrl->maximum + 1);
+-	return set_ctrl(NULL, ctrl, 0);
+-}
+-EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string);
+-
+-int __v4l2_ctrl_s_ctrl_compound(struct v4l2_ctrl *ctrl,
+-				enum v4l2_ctrl_type type, const void *p)
+-{
+-	lockdep_assert_held(ctrl->handler->lock);
+-
+-	/* It's a driver bug if this happens. */
+-	if (WARN_ON(ctrl->type != type))
+-		return -EINVAL;
+-	memcpy(ctrl->p_new.p, p, ctrl->elems * ctrl->elem_size);
+-	return set_ctrl(NULL, ctrl, 0);
+-}
+-EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_compound);
+-
+-void v4l2_ctrl_request_complete(struct media_request *req,
+-				struct v4l2_ctrl_handler *main_hdl)
+-{
+-	struct media_request_object *obj;
+-	struct v4l2_ctrl_handler *hdl;
+-	struct v4l2_ctrl_ref *ref;
+-
+-	if (!req || !main_hdl)
+-		return;
+-
+-	/*
+-	 * Note that it is valid if nothing was found. It means
+-	 * that this request doesn't have any controls and so just
+-	 * wants to leave the controls unchanged.
+-	 */
+-	obj = media_request_object_find(req, &req_ops, main_hdl);
+-	if (!obj)
+-		return;
+-	hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
+-
+-	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+-		struct v4l2_ctrl *ctrl = ref->ctrl;
+-		struct v4l2_ctrl *master = ctrl->cluster[0];
+-		unsigned int i;
+-
+-		if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
+-			v4l2_ctrl_lock(master);
+-			/* g_volatile_ctrl will update the current control values */
+-			for (i = 0; i < master->ncontrols; i++)
+-				cur_to_new(master->cluster[i]);
+-			call_op(master, g_volatile_ctrl);
+-			new_to_req(ref);
+-			v4l2_ctrl_unlock(master);
+-			continue;
+-		}
+-		if (ref->valid_p_req)
+-			continue;
+-
+-		/* Copy the current control value into the request */
+-		v4l2_ctrl_lock(ctrl);
+-		cur_to_req(ref);
+-		v4l2_ctrl_unlock(ctrl);
+-	}
+-
+-	mutex_lock(main_hdl->lock);
+-	WARN_ON(!hdl->request_is_queued);
+-	list_del_init(&hdl->requests_queued);
+-	hdl->request_is_queued = false;
+-	mutex_unlock(main_hdl->lock);
+-	media_request_object_complete(obj);
+-	media_request_object_put(obj);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_request_complete);
+-
+-int v4l2_ctrl_request_setup(struct media_request *req,
+-			     struct v4l2_ctrl_handler *main_hdl)
+-{
+-	struct media_request_object *obj;
+-	struct v4l2_ctrl_handler *hdl;
+-	struct v4l2_ctrl_ref *ref;
+-	int ret = 0;
+-
+-	if (!req || !main_hdl)
+-		return 0;
+-
+-	if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED))
+-		return -EBUSY;
+-
+-	/*
+-	 * Note that it is valid if nothing was found. It means
+-	 * that this request doesn't have any controls and so just
+-	 * wants to leave the controls unchanged.
+-	 */
+-	obj = media_request_object_find(req, &req_ops, main_hdl);
+-	if (!obj)
+-		return 0;
+-	if (obj->completed) {
+-		media_request_object_put(obj);
+-		return -EBUSY;
+-	}
+-	hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
+-
+-	list_for_each_entry(ref, &hdl->ctrl_refs, node)
+-		ref->req_done = false;
+-
+-	list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+-		struct v4l2_ctrl *ctrl = ref->ctrl;
+-		struct v4l2_ctrl *master = ctrl->cluster[0];
+-		bool have_new_data = false;
+-		int i;
+-
+-		/*
+-		 * Skip if this control was already handled by a cluster.
+-		 * Skip button controls and read-only controls.
+-		 */
+-		if (ref->req_done || (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
+-			continue;
+-
+-		v4l2_ctrl_lock(master);
+-		for (i = 0; i < master->ncontrols; i++) {
+-			if (master->cluster[i]) {
+-				struct v4l2_ctrl_ref *r =
+-					find_ref(hdl, master->cluster[i]->id);
+-
+-				if (r->valid_p_req) {
+-					have_new_data = true;
+-					break;
+-				}
+-			}
+-		}
+-		if (!have_new_data) {
+-			v4l2_ctrl_unlock(master);
+-			continue;
+-		}
+-
+-		for (i = 0; i < master->ncontrols; i++) {
+-			if (master->cluster[i]) {
+-				struct v4l2_ctrl_ref *r =
+-					find_ref(hdl, master->cluster[i]->id);
+-
+-				req_to_new(r);
+-				master->cluster[i]->is_new = 1;
+-				r->req_done = true;
+-			}
+-		}
+-		/*
+-		 * For volatile autoclusters that are currently in auto mode
+-		 * we need to discover if it will be set to manual mode.
+-		 * If so, then we have to copy the current volatile values
+-		 * first since those will become the new manual values (which
+-		 * may be overwritten by explicit new values from this set
+-		 * of controls).
+-		 */
+-		if (master->is_auto && master->has_volatiles &&
+-		    !is_cur_manual(master)) {
+-			s32 new_auto_val = *master->p_new.p_s32;
+-
+-			/*
+-			 * If the new value == the manual value, then copy
+-			 * the current volatile values.
+-			 */
+-			if (new_auto_val == master->manual_mode_value)
+-				update_from_auto_cluster(master);
+-		}
+-
+-		ret = try_or_set_cluster(NULL, master, true, 0);
+-		v4l2_ctrl_unlock(master);
+-
+-		if (ret)
+-			break;
+-	}
+-
+-	media_request_object_put(obj);
+-	return ret;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_request_setup);
+-
+-void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv)
+-{
+-	if (ctrl == NULL)
+-		return;
+-	if (notify == NULL) {
+-		ctrl->call_notify = 0;
+-		return;
+-	}
+-	if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify))
+-		return;
+-	ctrl->handler->notify = notify;
+-	ctrl->handler->notify_priv = priv;
+-	ctrl->call_notify = 1;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_notify);
+-
+-int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
+-			s64 min, s64 max, u64 step, s64 def)
+-{
+-	bool value_changed;
+-	bool range_changed = false;
+-	int ret;
+-
+-	lockdep_assert_held(ctrl->handler->lock);
+-
+-	switch (ctrl->type) {
+-	case V4L2_CTRL_TYPE_INTEGER:
+-	case V4L2_CTRL_TYPE_INTEGER64:
+-	case V4L2_CTRL_TYPE_BOOLEAN:
+-	case V4L2_CTRL_TYPE_MENU:
+-	case V4L2_CTRL_TYPE_INTEGER_MENU:
+-	case V4L2_CTRL_TYPE_BITMASK:
+-	case V4L2_CTRL_TYPE_U8:
+-	case V4L2_CTRL_TYPE_U16:
+-	case V4L2_CTRL_TYPE_U32:
+-		if (ctrl->is_array)
+-			return -EINVAL;
+-		ret = check_range(ctrl->type, min, max, step, def);
+-		if (ret)
+-			return ret;
+-		break;
+-	default:
+-		return -EINVAL;
+-	}
+-	if ((ctrl->minimum != min) || (ctrl->maximum != max) ||
+-		(ctrl->step != step) || ctrl->default_value != def) {
+-		range_changed = true;
+-		ctrl->minimum = min;
+-		ctrl->maximum = max;
+-		ctrl->step = step;
+-		ctrl->default_value = def;
+-	}
+-	cur_to_new(ctrl);
+-	if (validate_new(ctrl, ctrl->p_new)) {
+-		if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
+-			*ctrl->p_new.p_s64 = def;
+-		else
+-			*ctrl->p_new.p_s32 = def;
+-	}
+-
+-	if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
+-		value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64;
+-	else
+-		value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32;
+-	if (value_changed)
+-		ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
+-	else if (range_changed)
+-		send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
+-	return ret;
+-}
+-EXPORT_SYMBOL(__v4l2_ctrl_modify_range);
+-
+-static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
+-{
+-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
+-
+-	if (ctrl == NULL)
+-		return -EINVAL;
+-
+-	v4l2_ctrl_lock(ctrl);
+-	list_add_tail(&sev->node, &ctrl->ev_subs);
+-	if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS &&
+-	    (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) {
+-		struct v4l2_event ev;
+-		u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
+-
+-		if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY))
+-			changes |= V4L2_EVENT_CTRL_CH_VALUE;
+-		fill_event(&ev, ctrl, changes);
+-		/* Mark the queue as active, allowing this initial
+-		   event to be accepted. */
+-		sev->elems = elems;
+-		v4l2_event_queue_fh(sev->fh, &ev);
+-	}
+-	v4l2_ctrl_unlock(ctrl);
+-	return 0;
+-}
+-
+-static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev)
+-{
+-	struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
+-
+-	if (ctrl == NULL)
+-		return;
+-
+-	v4l2_ctrl_lock(ctrl);
+-	list_del(&sev->node);
+-	v4l2_ctrl_unlock(ctrl);
+-}
+-
+-void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new)
+-{
+-	u32 old_changes = old->u.ctrl.changes;
+-
+-	old->u.ctrl = new->u.ctrl;
+-	old->u.ctrl.changes |= old_changes;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_replace);
+-
+-void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new)
+-{
+-	new->u.ctrl.changes |= old->u.ctrl.changes;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_merge);
+-
+-const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = {
+-	.add = v4l2_ctrl_add_event,
+-	.del = v4l2_ctrl_del_event,
+-	.replace = v4l2_ctrl_replace,
+-	.merge = v4l2_ctrl_merge,
+-};
+-EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops);
+-
+-int v4l2_ctrl_log_status(struct file *file, void *fh)
+-{
+-	struct video_device *vfd = video_devdata(file);
+-	struct v4l2_fh *vfh = file->private_data;
+-
+-	if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev)
+-		v4l2_ctrl_handler_log_status(vfh->ctrl_handler,
+-			vfd->v4l2_dev->name);
+-	return 0;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_log_status);
+-
+-int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh,
+-				const struct v4l2_event_subscription *sub)
+-{
+-	if (sub->type == V4L2_EVENT_CTRL)
+-		return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops);
+-	return -EINVAL;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_subscribe_event);
+-
+-int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+-				     struct v4l2_event_subscription *sub)
+-{
+-	if (!sd->ctrl_handler)
+-		return -EINVAL;
+-	return v4l2_ctrl_subscribe_event(fh, sub);
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event);
+-
+-__poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait)
+-{
+-	struct v4l2_fh *fh = file->private_data;
+-
+-	poll_wait(file, &fh->wait, wait);
+-	if (v4l2_event_pending(fh))
+-		return EPOLLPRI;
+-	return 0;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_poll);
+-
+-int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,
+-				    const struct v4l2_ctrl_ops *ctrl_ops,
+-				    const struct v4l2_fwnode_device_properties *p)
+-{
+-	if (p->orientation != V4L2_FWNODE_PROPERTY_UNSET) {
+-		u32 orientation_ctrl;
+-
+-		switch (p->orientation) {
+-		case V4L2_FWNODE_ORIENTATION_FRONT:
+-			orientation_ctrl = V4L2_CAMERA_ORIENTATION_FRONT;
+-			break;
+-		case V4L2_FWNODE_ORIENTATION_BACK:
+-			orientation_ctrl = V4L2_CAMERA_ORIENTATION_BACK;
+-			break;
+-		case V4L2_FWNODE_ORIENTATION_EXTERNAL:
+-			orientation_ctrl = V4L2_CAMERA_ORIENTATION_EXTERNAL;
+-			break;
+-		default:
+-			return -EINVAL;
+-		}
+-		if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops,
+-					    V4L2_CID_CAMERA_ORIENTATION,
+-					    V4L2_CAMERA_ORIENTATION_EXTERNAL, 0,
+-					    orientation_ctrl))
+-			return hdl->error;
+-	}
+-
+-	if (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) {
+-		if (!v4l2_ctrl_new_std(hdl, ctrl_ops,
+-				       V4L2_CID_CAMERA_SENSOR_ROTATION,
+-				       p->rotation, p->rotation, 1,
+-				       p->rotation))
+-			return hdl->error;
+-	}
+-
+-	return hdl->error;
+-}
+-EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0461-media-v4l2-Add-HEVC_SCALING_MATRIX-attribute-to-v4l2.patch b/target/linux/bcm27xx/patches-5.15/950-0461-media-v4l2-Add-HEVC_SCALING_MATRIX-attribute-to-v4l2.patch
new file mode 100644
index 0000000000..0a18b9dff2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0461-media-v4l2-Add-HEVC_SCALING_MATRIX-attribute-to-v4l2.patch
@@ -0,0 +1,58 @@
+From 7e8e61a7103c53c54cbd1b81c4fb6289141be7c5 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Fri, 6 Aug 2021 10:53:50 +0100
+Subject: [PATCH] media: v4l2: Add HEVC_SCALING_MATRIX attribute to
+ v4l2-ctrl-*
+
+Add code to support V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX to
+v4l2-ctrl-*. This change was in the unsplit v4l2-ctrl.c but failed
+to make it through the split.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/media/v4l2-core/v4l2-ctrls-core.c | 6 ++++++
+ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 4 ++++
+ 2 files changed, 10 insertions(+)
+
+--- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
+@@ -627,6 +627,9 @@ static int std_validate_compound(const s
+ 		zero_padding(*p_hevc_pps);
+ 		break;
+ 
++	case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX:
++		break;
++
+ 	case V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS:
+ 		p_hevc_decode_params = p;
+ 
+@@ -1250,6 +1253,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 	case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
+ 		elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
+ 		break;
++	case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX:
++		elem_size = sizeof(struct v4l2_ctrl_hevc_scaling_matrix);
++		break;
+ 	case V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS:
+ 		elem_size = sizeof(struct v4l2_ctrl_hevc_decode_params);
+ 		break;
+--- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
+@@ -997,6 +997,7 @@ const char *v4l2_ctrl_get_name(u32 id)
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_SPS:			return "HEVC Sequence Parameter Set";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_PPS:			return "HEVC Picture Parameter Set";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:		return "HEVC Slice Parameters";
++	case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX:		return "HEVC Scaling Matrix";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS:		return "HEVC Decode Parameters";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:		return "HEVC Decode Mode";
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:		return "HEVC Start Code";
+@@ -1490,6 +1491,9 @@ void v4l2_ctrl_fill(u32 id, const char *
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
+ 		*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
+ 		break;
++	case V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX:
++		*type = V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX;
++		break;
+ 	case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS:
+ 		*type = V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS;
+ 		break;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0462-media-rpivid-Update-to-compile-with-new-hevc-decode-.patch b/target/linux/bcm27xx/patches-5.15/950-0462-media-rpivid-Update-to-compile-with-new-hevc-decode-.patch
new file mode 100644
index 0000000000..142e504bfb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0462-media-rpivid-Update-to-compile-with-new-hevc-decode-.patch
@@ -0,0 +1,197 @@
+From 2a88d608907e78bc6506579de01fabaa18219483 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 5 Aug 2021 15:18:50 +0100
+Subject: [PATCH] media: rpivid: Update to compile with new hevc decode
+ params
+
+DPB entries have moved from slice params to the new decode params
+attribute - update to deal with this.  Also fixes fallthrough
+warnings which seem to be new in 5.14.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.c      |  6 ++++
+ drivers/staging/media/rpivid/rpivid.h      |  1 +
+ drivers/staging/media/rpivid/rpivid_dec.c  |  3 ++
+ drivers/staging/media/rpivid/rpivid_h265.c | 35 ++++++++++++----------
+ 4 files changed, 30 insertions(+), 15 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.c
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -57,6 +57,12 @@ static const struct rpivid_control rpivi
+ 	},
+ 	{
+ 		.cfg = {
++			.id	= V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS,
++		},
++		.required	= true,
++	},
++	{
++		.cfg = {
+ 			.id	= V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS,
+ 		},
+ 		.required	= true,
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -52,6 +52,7 @@ struct rpivid_h265_run {
+ 	u32 slice_ents;
+ 	const struct v4l2_ctrl_hevc_sps			*sps;
+ 	const struct v4l2_ctrl_hevc_pps			*pps;
++	const struct v4l2_ctrl_hevc_decode_params      	*dec;
+ 	const struct v4l2_ctrl_hevc_slice_params	*slice_params;
+ 	const struct v4l2_ctrl_hevc_scaling_matrix	*scaling_matrix;
+ };
+--- a/drivers/staging/media/rpivid/rpivid_dec.c
++++ b/drivers/staging/media/rpivid/rpivid_dec.c
+@@ -55,6 +55,9 @@ void rpivid_device_run(void *priv)
+ 		run.h265.slice_params =
+ 			rpivid_find_control_data(ctx,
+ 						 V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS);
++		run.h265.dec =
++			rpivid_find_control_data(ctx,
++						 V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS);
+ 		run.h265.scaling_matrix =
+ 			rpivid_find_control_data(ctx,
+ 						 V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX);
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -252,6 +252,7 @@ struct rpivid_dec_state {
+ 	u8 *src_buf;
+ 	dma_addr_t src_addr;
+ 	const struct v4l2_ctrl_hevc_slice_params *sh;
++	const struct v4l2_ctrl_hevc_decode_params *dec;
+ 	unsigned int nb_refs[2];
+ 	unsigned int slice_qp;
+ 	unsigned int max_num_merge_cand; // 0 if I-slice
+@@ -799,6 +800,7 @@ static void pre_slice_decode(struct rpiv
+ 			     const struct rpivid_dec_state *const s)
+ {
+ 	const struct v4l2_ctrl_hevc_slice_params *const sh = s->sh;
++	const struct v4l2_ctrl_hevc_decode_params *const dec = s->dec;
+ 	int weighted_pred_flag, idx;
+ 	u16 cmd_slice;
+ 	unsigned int collocated_from_l0_flag;
+@@ -825,9 +827,9 @@ static void pre_slice_decode(struct rpiv
+ 	if (sh->slice_type == HEVC_SLICE_P || sh->slice_type == HEVC_SLICE_B) {
+ 		// Flag to say all reference pictures are from the past
+ 		const int no_backward_pred_flag =
+-			has_backward(sh->dpb, sh->ref_idx_l0, s->nb_refs[L0],
++			has_backward(dec->dpb, sh->ref_idx_l0, s->nb_refs[L0],
+ 				     sh->slice_pic_order_cnt) &&
+-			has_backward(sh->dpb, sh->ref_idx_l1, s->nb_refs[L1],
++			has_backward(dec->dpb, sh->ref_idx_l1, s->nb_refs[L1],
+ 				     sh->slice_pic_order_cnt);
+ 		cmd_slice |= no_backward_pred_flag << 10;
+ 		msg_slice(de, cmd_slice);
+@@ -855,11 +857,11 @@ static void pre_slice_decode(struct rpiv
+ 
+ 			msg_slice(de,
+ 				  dpb_no |
+-				  (sh->dpb[dpb_no].rps ==
++				  (dec->dpb[dpb_no].rps ==
+ 					V4L2_HEVC_DPB_ENTRY_RPS_LT_CURR ?
+ 						 (1 << 4) : 0) |
+ 				  (weighted_pred_flag ? (3 << 5) : 0));
+-			msg_slice(de, sh->dpb[dpb_no].pic_order_cnt[0]);
++			msg_slice(de, dec->dpb[dpb_no].pic_order_cnt[0]);
+ 
+ 			if (weighted_pred_flag) {
+ 				const struct v4l2_hevc_pred_weight_table
+@@ -901,11 +903,11 @@ static void pre_slice_decode(struct rpiv
+ 			//          "L1[%d]=dpb[%d]\n", idx, dpb_no);
+ 			msg_slice(de,
+ 				  dpb_no |
+-				  (sh->dpb[dpb_no].rps ==
++				  (dec->dpb[dpb_no].rps ==
+ 					 V4L2_HEVC_DPB_ENTRY_RPS_LT_CURR ?
+ 						 (1 << 4) : 0) |
+ 					(weighted_pred_flag ? (3 << 5) : 0));
+-			msg_slice(de, sh->dpb[dpb_no].pic_order_cnt[0]);
++			msg_slice(de, dec->dpb[dpb_no].pic_order_cnt[0]);
+ 			if (weighted_pred_flag) {
+ 				const struct v4l2_hevc_pred_weight_table
+ 					*const w = &sh->pred_weight_table;
+@@ -1670,6 +1672,8 @@ static void rpivid_h265_setup(struct rpi
+ 	struct rpivid_dev *const dev = ctx->dev;
+ 	const struct v4l2_ctrl_hevc_slice_params *const sh =
+ 						run->h265.slice_params;
++	const struct v4l2_ctrl_hevc_decode_params *const dec =
++						run->h265.dec;
+ //	const struct v4l2_hevc_pred_weight_table *pred_weight_table;
+ 	struct rpivid_q_aux *dpb_q_aux[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ 	struct rpivid_dec_state *const s = ctx->state;
+@@ -1895,6 +1899,7 @@ static void rpivid_h265_setup(struct rpi
+ 
+ 	// Pre calc a few things
+ 	s->sh = sh;
++	s->dec = dec;
+ 	s->slice_qp = 26 + s->pps.init_qp_minus26 + s->sh->slice_qp_delta;
+ 	s->max_num_merge_cand = sh->slice_type == HEVC_SLICE_I ?
+ 					0 :
+@@ -1965,9 +1970,9 @@ static void rpivid_h265_setup(struct rpi
+ 	if (write_cmd_buffer(dev, de, s))
+ 		goto fail;
+ 
+-	for (i = 0; i < sh->num_active_dpb_entries; ++i) {
++	for (i = 0; i < dec->num_active_dpb_entries; ++i) {
+ 		int buffer_index =
+-			vb2_find_timestamp(vq, sh->dpb[i].timestamp, 0);
++			vb2_find_timestamp(vq, dec->dpb[i].timestamp, 0);
+ 		struct vb2_buffer *buf = buffer_index < 0 ?
+ 					NULL :
+ 					vb2_get_buffer(vq, buffer_index);
+@@ -1975,7 +1980,7 @@ static void rpivid_h265_setup(struct rpi
+ 		if (!buf) {
+ 			v4l2_warn(&dev->v4l2_dev,
+ 				  "Missing DPB ent %d, timestamp=%lld, index=%d\n",
+-				  i, (long long)sh->dpb[i].timestamp,
++				  i, (long long)dec->dpb[i].timestamp,
+ 				  buffer_index);
+ 			continue;
+ 		}
+@@ -1985,7 +1990,7 @@ static void rpivid_h265_setup(struct rpi
+ 			if (!dpb_q_aux[i])
+ 				v4l2_warn(&dev->v4l2_dev,
+ 					  "Missing DPB AUX ent %d, timestamp=%lld, index=%d\n",
+-					  i, (long long)sh->dpb[i].timestamp,
++					  i, (long long)dec->dpb[i].timestamp,
+ 					  buffer_index);
+ 		}
+ 
+@@ -2017,11 +2022,11 @@ static void rpivid_h265_setup(struct rpi
+ 	}
+ 
+ 	if (de->dpbno_col != ~0U) {
+-		if (de->dpbno_col >= sh->num_active_dpb_entries) {
++		if (de->dpbno_col >= dec->num_active_dpb_entries) {
+ 			v4l2_err(&dev->v4l2_dev,
+ 				 "Col ref index %d >= %d\n",
+ 				 de->dpbno_col,
+-				 sh->num_active_dpb_entries);
++				 dec->num_active_dpb_entries);
+ 		} else {
+ 			// Standard requires that the col pic is
+ 			// constant for the duration of the pic
+@@ -2462,7 +2467,7 @@ static void rpivid_h265_trigger(struct r
+ 	switch (!de ? RPIVID_DECODE_ERROR_CONTINUE : de->state) {
+ 	case RPIVID_DECODE_SLICE_START:
+ 		de->state = RPIVID_DECODE_SLICE_CONTINUE;
+-	/* FALLTHRU */
++		fallthrough;
+ 	case RPIVID_DECODE_SLICE_CONTINUE:
+ 		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
+ 						 VB2_BUF_STATE_DONE);
+@@ -2472,11 +2477,11 @@ static void rpivid_h265_trigger(struct r
+ 	default:
+ 		v4l2_err(&dev->v4l2_dev, "%s: Unexpected state: %d\n", __func__,
+ 			 de->state);
+-	/* FALLTHRU */
++		fallthrough;
+ 	case RPIVID_DECODE_ERROR_DONE:
+ 		ctx->dec0 = NULL;
+ 		dec_env_delete(de);
+-	/* FALLTHRU */
++		fallthrough;
+ 	case RPIVID_DECODE_ERROR_CONTINUE:
+ 		xtrace_fin(dev, de);
+ 		v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev, ctx->fh.m2m_ctx,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0463-media-v4l2-Add-Greyworld-AWB-control-name.patch b/target/linux/bcm27xx/patches-5.15/950-0463-media-v4l2-Add-Greyworld-AWB-control-name.patch
new file mode 100644
index 0000000000..b3ec7a557b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0463-media-v4l2-Add-Greyworld-AWB-control-name.patch
@@ -0,0 +1,24 @@
+From 41dddcd64badc4b52dedbc15ec60b24be143ceeb Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Fri, 6 Aug 2021 14:32:44 +0100
+Subject: [PATCH] media: v4l2: Add Greyworld AWB control name
+
+Add name for greyworld to white_balance preset names.
+This patch previously applied to v4l2-ctrl.c but that was split
+and deleted.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
+@@ -228,6 +228,7 @@ const char * const *v4l2_ctrl_get_menu(u
+ 		"Flash",
+ 		"Cloudy",
+ 		"Shade",
++		"Greyworld",
+ 		NULL,
+ 	};
+ 	static const char * const camera_iso_sensitivity_auto[] = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0464-videodev2.h-add-V4L2_CTRL_FLAG_DYNAMIC_ARRAY.patch b/target/linux/bcm27xx/patches-5.15/950-0464-videodev2.h-add-V4L2_CTRL_FLAG_DYNAMIC_ARRAY.patch
new file mode 100644
index 0000000000..58e32d9930
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0464-videodev2.h-add-V4L2_CTRL_FLAG_DYNAMIC_ARRAY.patch
@@ -0,0 +1,52 @@
+From 1ef126fb69d37c6958a0b945365e532b500d43bd Mon Sep 17 00:00:00 2001
+From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Date: Wed, 14 Apr 2021 15:01:16 +0200
+Subject: [PATCH] videodev2.h: add V4L2_CTRL_FLAG_DYNAMIC_ARRAY
+
+Add a new flag that indicates that this control is a dynamically sized
+array. Also document this flag.
+
+Currently dynamically sized arrays are limited to one dimensional arrays,
+but that might change in the future if there is a need for it.
+
+The initial use-case of dynamic arrays are stateless codecs. A frame
+can be divided in many slices, so you want to provide an array containing
+slice information for each slice. Typically the number of slices is small,
+but the standard allow for hundreds or thousands of slices. Dynamic arrays
+are a good solution since sizing the array for the worst case would waste
+substantial amounts of memory.
+
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+(cherry picked from commit c095ad310b223b9de38d491c9f66533d05586b45)
+---
+ .../userspace-api/media/v4l/vidioc-queryctrl.rst          | 8 ++++++++
+ include/uapi/linux/videodev2.h                            | 1 +
+ 2 files changed, 9 insertions(+)
+
+--- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
++++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
+@@ -607,6 +607,14 @@ See also the examples in :ref:`control`.
+ 	``V4L2_CTRL_FLAG_GRABBED`` flag when buffers are allocated or
+ 	streaming is in progress since most drivers do not support changing
+ 	the format in that case.
++    * - ``V4L2_CTRL_FLAG_DYNAMIC_ARRAY``
++      - 0x0800
++      - This control is a dynamically sized 1-dimensional array. It
++        behaves the same as a regular array, except that the number
++	of elements as reported by the ``elems`` field is between 1 and
++	``dims[0]``. So setting the control with a differently sized
++	array will change the ``elems`` field when the control is
++	queried afterwards.
+ 
+ Return Value
+ ============
+--- a/include/uapi/linux/videodev2.h
++++ b/include/uapi/linux/videodev2.h
+@@ -1882,6 +1882,7 @@ struct v4l2_querymenu {
+ #define V4L2_CTRL_FLAG_HAS_PAYLOAD	0x0100
+ #define V4L2_CTRL_FLAG_EXECUTE_ON_WRITE	0x0200
+ #define V4L2_CTRL_FLAG_MODIFY_LAYOUT	0x0400
++#define V4L2_CTRL_FLAG_DYNAMIC_ARRAY	0x0800
+ 
+ /*  Query flags, to be ORed with the control ID */
+ #define V4L2_CTRL_FLAG_NEXT_CTRL	0x80000000
diff --git a/target/linux/bcm27xx/patches-5.15/950-0465-v4l2-ctrls-add-support-for-dynamically-allocated-arr.patch b/target/linux/bcm27xx/patches-5.15/950-0465-v4l2-ctrls-add-support-for-dynamically-allocated-arr.patch
new file mode 100644
index 0000000000..03074222fe
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0465-v4l2-ctrls-add-support-for-dynamically-allocated-arr.patch
@@ -0,0 +1,688 @@
+From 613b860fe9c37b96d9706b02fe77933f086f9896 Mon Sep 17 00:00:00 2001
+From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+Date: Thu, 15 Apr 2021 13:56:53 +0200
+Subject: [PATCH] v4l2-ctrls: add support for dynamically allocated
+ arrays.
+
+Implement support for dynamically allocated arrays.
+
+Most of the changes concern keeping track of the number of elements
+of the array and the number of elements allocated for the array and
+reallocating memory if needed.
+
+Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
+(cherry picked from commit fd5d45e6561f6f8c406b81aeddecaa11f0bd15af)
+---
+ drivers/media/v4l2-core/v4l2-ctrls-api.c     | 103 ++++++++---
+ drivers/media/v4l2-core/v4l2-ctrls-core.c    | 182 +++++++++++++++----
+ drivers/media/v4l2-core/v4l2-ctrls-priv.h    |   3 +-
+ drivers/media/v4l2-core/v4l2-ctrls-request.c |  13 +-
+ include/media/v4l2-ctrls.h                   |  42 ++++-
+ 5 files changed, 272 insertions(+), 71 deletions(-)
+
+--- a/drivers/media/v4l2-core/v4l2-ctrls-api.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls-api.c
+@@ -97,29 +97,47 @@ static int def_to_user(struct v4l2_ext_c
+ 	return ptr_to_user(c, ctrl, ctrl->p_new);
+ }
+ 
+-/* Helper function: copy the caller-provider value to the given control value */
+-static int user_to_ptr(struct v4l2_ext_control *c,
+-		       struct v4l2_ctrl *ctrl,
+-		       union v4l2_ctrl_ptr ptr)
++/* Helper function: copy the caller-provider value as the new control value */
++static int user_to_new(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl)
+ {
+ 	int ret;
+ 	u32 size;
+ 
+-	ctrl->is_new = 1;
++	ctrl->is_new = 0;
++	if (ctrl->is_dyn_array &&
++	    c->size > ctrl->p_dyn_alloc_elems * ctrl->elem_size) {
++		void *old = ctrl->p_dyn;
++		void *tmp = kvzalloc(2 * c->size, GFP_KERNEL);
++
++		if (!tmp)
++			return -ENOMEM;
++		memcpy(tmp, ctrl->p_new.p, ctrl->elems * ctrl->elem_size);
++		memcpy(tmp + c->size, ctrl->p_cur.p, ctrl->elems * ctrl->elem_size);
++		ctrl->p_new.p = tmp;
++		ctrl->p_cur.p = tmp + c->size;
++		ctrl->p_dyn = tmp;
++		ctrl->p_dyn_alloc_elems = c->size / ctrl->elem_size;
++		kvfree(old);
++	}
++
+ 	if (ctrl->is_ptr && !ctrl->is_string) {
++		unsigned int elems = c->size / ctrl->elem_size;
+ 		unsigned int idx;
+ 
+-		ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0;
+-		if (ret || !ctrl->is_array)
+-			return ret;
+-		for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++)
+-			ctrl->type_ops->init(ctrl, idx, ptr);
++		if (copy_from_user(ctrl->p_new.p, c->ptr, c->size))
++			return -EFAULT;
++		ctrl->is_new = 1;
++		if (ctrl->is_dyn_array)
++			ctrl->new_elems = elems;
++		else if (ctrl->is_array)
++			for (idx = elems; idx < ctrl->elems; idx++)
++				ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
+ 		return 0;
+ 	}
+ 
+ 	switch (ctrl->type) {
+ 	case V4L2_CTRL_TYPE_INTEGER64:
+-		*ptr.p_s64 = c->value64;
++		*ctrl->p_new.p_s64 = c->value64;
+ 		break;
+ 	case V4L2_CTRL_TYPE_STRING:
+ 		size = c->size;
+@@ -127,32 +145,27 @@ static int user_to_ptr(struct v4l2_ext_c
+ 			return -ERANGE;
+ 		if (size > ctrl->maximum + 1)
+ 			size = ctrl->maximum + 1;
+-		ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0;
++		ret = copy_from_user(ctrl->p_new.p_char, c->string, size) ? -EFAULT : 0;
+ 		if (!ret) {
+-			char last = ptr.p_char[size - 1];
++			char last = ctrl->p_new.p_char[size - 1];
+ 
+-			ptr.p_char[size - 1] = 0;
++			ctrl->p_new.p_char[size - 1] = 0;
+ 			/*
+ 			 * If the string was longer than ctrl->maximum,
+ 			 * then return an error.
+ 			 */
+-			if (strlen(ptr.p_char) == ctrl->maximum && last)
++			if (strlen(ctrl->p_new.p_char) == ctrl->maximum && last)
+ 				return -ERANGE;
+ 		}
+ 		return ret;
+ 	default:
+-		*ptr.p_s32 = c->value;
++		*ctrl->p_new.p_s32 = c->value;
+ 		break;
+ 	}
++	ctrl->is_new = 1;
+ 	return 0;
+ }
+ 
+-/* Helper function: copy the caller-provider value as the new control value */
+-static int user_to_new(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl)
+-{
+-	return user_to_ptr(c, ctrl, ctrl->p_new);
+-}
+-
+ /*
+  * VIDIOC_G/TRY/S_EXT_CTRLS implementation
+  */
+@@ -254,7 +267,31 @@ static int prepare_ext_ctrls(struct v4l2
+ 			have_clusters = true;
+ 		if (ctrl->cluster[0] != ctrl)
+ 			ref = find_ref_lock(hdl, ctrl->cluster[0]->id);
+-		if (ctrl->is_ptr && !ctrl->is_string) {
++		if (ctrl->is_dyn_array) {
++			unsigned int max_size = ctrl->dims[0] * ctrl->elem_size;
++			unsigned int tot_size = ctrl->elem_size;
++
++			if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL)
++				tot_size *= ref->p_req_elems;
++			else
++				tot_size *= ctrl->elems;
++
++			c->size = ctrl->elem_size * (c->size / ctrl->elem_size);
++			if (get) {
++				if (c->size < tot_size) {
++					c->size = tot_size;
++					return -ENOSPC;
++				}
++				c->size = tot_size;
++			} else {
++				if (c->size > max_size) {
++					c->size = max_size;
++					return -ENOSPC;
++				}
++				if (!c->size)
++					return -EFAULT;
++			}
++		} else if (ctrl->is_ptr && !ctrl->is_string) {
+ 			unsigned int tot_size = ctrl->elems * ctrl->elem_size;
+ 
+ 			if (c->size < tot_size) {
+@@ -346,7 +383,7 @@ static int class_check(struct v4l2_ctrl_
+  *
+  * Note that v4l2_g_ext_ctrls_common() with 'which' set to
+  * V4L2_CTRL_WHICH_REQUEST_VAL is only called if the request was
+- * completed, and in that case valid_p_req is true for all controls.
++ * completed, and in that case p_req_valid is true for all controls.
+  */
+ int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl,
+ 			    struct v4l2_ext_controls *cs,
+@@ -430,7 +467,9 @@ int v4l2_g_ext_ctrls_common(struct v4l2_
+ 
+ 			if (is_default)
+ 				ret = def_to_user(cs->controls + idx, ref->ctrl);
+-			else if (is_request && ref->valid_p_req)
++			else if (is_request && ref->p_req_dyn_enomem)
++				ret = -ENOMEM;
++			else if (is_request && ref->p_req_valid)
+ 				ret = req_to_user(cs->controls + idx, ref);
+ 			else if (is_volatile)
+ 				ret = new_to_user(cs->controls + idx, ref->ctrl);
+@@ -457,6 +496,17 @@ int v4l2_g_ext_ctrls(struct v4l2_ctrl_ha
+ }
+ EXPORT_SYMBOL(v4l2_g_ext_ctrls);
+ 
++/* Validate a new control */
++static int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new)
++{
++	unsigned int idx;
++	int err = 0;
++
++	for (idx = 0; !err && idx < ctrl->new_elems; idx++)
++		err = ctrl->type_ops->validate(ctrl, idx, p_new);
++	return err;
++}
++
+ /* Validate controls. */
+ static int validate_ctrls(struct v4l2_ext_controls *cs,
+ 			  struct v4l2_ctrl_helper *helpers,
+@@ -872,6 +922,9 @@ int __v4l2_ctrl_s_ctrl_compound(struct v
+ 	/* It's a driver bug if this happens. */
+ 	if (WARN_ON(ctrl->type != type))
+ 		return -EINVAL;
++	/* Setting dynamic arrays is not (yet?) supported. */
++	if (WARN_ON(ctrl->is_dyn_array))
++		return -EINVAL;
+ 	memcpy(ctrl->p_new.p, p, ctrl->elems * ctrl->elem_size);
+ 	return set_ctrl(NULL, ctrl, 0);
+ }
+--- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
+@@ -809,11 +809,12 @@ EXPORT_SYMBOL(v4l2_ctrl_notify);
+ 
+ /* Copy the one value to another. */
+ static void ptr_to_ptr(struct v4l2_ctrl *ctrl,
+-		       union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to)
++		       union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to,
++		       unsigned int elems)
+ {
+ 	if (ctrl == NULL)
+ 		return;
+-	memcpy(to.p, from.p_const, ctrl->elems * ctrl->elem_size);
++	memcpy(to.p, from.p_const, elems * ctrl->elem_size);
+ }
+ 
+ /* Copy the new value to the current value. */
+@@ -826,8 +827,11 @@ void new_to_cur(struct v4l2_fh *fh, stru
+ 
+ 	/* has_changed is set by cluster_changed */
+ 	changed = ctrl->has_changed;
+-	if (changed)
+-		ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur);
++	if (changed) {
++		if (ctrl->is_dyn_array)
++			ctrl->elems = ctrl->new_elems;
++		ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur, ctrl->elems);
++	}
+ 
+ 	if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) {
+ 		/* Note: CH_FLAGS is only set for auto clusters. */
+@@ -857,36 +861,122 @@ void cur_to_new(struct v4l2_ctrl *ctrl)
+ {
+ 	if (ctrl == NULL)
+ 		return;
+-	ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new);
++	if (ctrl->is_dyn_array)
++		ctrl->new_elems = ctrl->elems;
++	ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new, ctrl->new_elems);
++}
++
++static bool req_alloc_dyn_array(struct v4l2_ctrl_ref *ref, u32 elems)
++{
++	void *tmp;
++
++	if (elems < ref->p_req_dyn_alloc_elems)
++		return true;
++
++	tmp = kvmalloc(elems * ref->ctrl->elem_size, GFP_KERNEL);
++
++	if (!tmp) {
++		ref->p_req_dyn_enomem = true;
++		return false;
++	}
++	ref->p_req_dyn_enomem = false;
++	kvfree(ref->p_req.p);
++	ref->p_req.p = tmp;
++	ref->p_req_dyn_alloc_elems = elems;
++	return true;
+ }
+ 
+ /* Copy the new value to the request value */
+ void new_to_req(struct v4l2_ctrl_ref *ref)
+ {
++	struct v4l2_ctrl *ctrl;
++
+ 	if (!ref)
+ 		return;
+-	ptr_to_ptr(ref->ctrl, ref->ctrl->p_new, ref->p_req);
+-	ref->valid_p_req = true;
++
++	ctrl = ref->ctrl;
++	if (ctrl->is_dyn_array && !req_alloc_dyn_array(ref, ctrl->new_elems))
++		return;
++
++	ref->p_req_elems = ctrl->new_elems;
++	ptr_to_ptr(ctrl, ctrl->p_new, ref->p_req, ref->p_req_elems);
++	ref->p_req_valid = true;
+ }
+ 
+ /* Copy the current value to the request value */
+ void cur_to_req(struct v4l2_ctrl_ref *ref)
+ {
++	struct v4l2_ctrl *ctrl;
++
+ 	if (!ref)
+ 		return;
+-	ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->p_req);
+-	ref->valid_p_req = true;
++
++	ctrl = ref->ctrl;
++	if (ctrl->is_dyn_array && !req_alloc_dyn_array(ref, ctrl->elems))
++		return;
++
++	ref->p_req_elems = ctrl->elems;
++	ptr_to_ptr(ctrl, ctrl->p_cur, ref->p_req, ctrl->elems);
++	ref->p_req_valid = true;
+ }
+ 
+ /* Copy the request value to the new value */
+-void req_to_new(struct v4l2_ctrl_ref *ref)
++int req_to_new(struct v4l2_ctrl_ref *ref)
+ {
++	struct v4l2_ctrl *ctrl;
++
+ 	if (!ref)
+-		return;
+-	if (ref->valid_p_req)
+-		ptr_to_ptr(ref->ctrl, ref->p_req, ref->ctrl->p_new);
+-	else
+-		ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->ctrl->p_new);
++		return 0;
++
++	ctrl = ref->ctrl;
++
++	/*
++	 * This control was never set in the request, so just use the current
++	 * value.
++	 */
++	if (!ref->p_req_valid) {
++		if (ctrl->is_dyn_array)
++			ctrl->new_elems = ctrl->elems;
++		ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new, ctrl->new_elems);
++		return 0;
++	}
++
++	/* Not a dynamic array, so just copy the request value */
++	if (!ctrl->is_dyn_array) {
++		ptr_to_ptr(ctrl, ref->p_req, ctrl->p_new, ctrl->new_elems);
++		return 0;
++	}
++
++	/* Sanity check, should never happen */
++	if (WARN_ON(!ref->p_req_dyn_alloc_elems))
++		return -ENOMEM;
++
++	/*
++	 * Check if the number of elements in the request is more than the
++	 * elements in ctrl->p_dyn. If so, attempt to realloc ctrl->p_dyn.
++	 * Note that p_dyn is allocated with twice the number of elements
++	 * in the dynamic array since it has to store both the current and
++	 * new value of such a control.
++	 */
++	if (ref->p_req_elems > ctrl->p_dyn_alloc_elems) {
++		unsigned int sz = ref->p_req_elems * ctrl->elem_size;
++		void *old = ctrl->p_dyn;
++		void *tmp = kvzalloc(2 * sz, GFP_KERNEL);
++
++		if (!tmp)
++			return -ENOMEM;
++		memcpy(tmp, ctrl->p_new.p, ctrl->elems * ctrl->elem_size);
++		memcpy(tmp + sz, ctrl->p_cur.p, ctrl->elems * ctrl->elem_size);
++		ctrl->p_new.p = tmp;
++		ctrl->p_cur.p = tmp + sz;
++		ctrl->p_dyn = tmp;
++		ctrl->p_dyn_alloc_elems = ref->p_req_elems;
++		kvfree(old);
++	}
++
++	ctrl->new_elems = ref->p_req_elems;
++	ptr_to_ptr(ctrl, ref->p_req, ctrl->p_new, ctrl->new_elems);
++	return 0;
+ }
+ 
+ /* Control range checking */
+@@ -928,17 +1018,6 @@ int check_range(enum v4l2_ctrl_type type
+ 	}
+ }
+ 
+-/* Validate a new control */
+-int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new)
+-{
+-	unsigned idx;
+-	int err = 0;
+-
+-	for (idx = 0; !err && idx < ctrl->elems; idx++)
+-		err = ctrl->type_ops->validate(ctrl, idx, p_new);
+-	return err;
+-}
+-
+ /* Set the handler's error code if it wasn't set earlier already */
+ static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err)
+ {
+@@ -983,6 +1062,8 @@ void v4l2_ctrl_handler_free(struct v4l2_
+ 	/* Free all nodes */
+ 	list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) {
+ 		list_del(&ref->node);
++		if (ref->p_req_dyn_alloc_elems)
++			kvfree(ref->p_req.p);
+ 		kfree(ref);
+ 	}
+ 	/* Free all controls owned by the handler */
+@@ -990,6 +1071,7 @@ void v4l2_ctrl_handler_free(struct v4l2_
+ 		list_del(&ctrl->node);
+ 		list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node)
+ 			list_del(&sev->node);
++		kvfree(ctrl->p_dyn);
+ 		kvfree(ctrl);
+ 	}
+ 	kvfree(hdl->buckets);
+@@ -1105,7 +1187,7 @@ int handler_new_ref(struct v4l2_ctrl_han
+ 	if (hdl->error)
+ 		return hdl->error;
+ 
+-	if (allocate_req)
++	if (allocate_req && !ctrl->is_dyn_array)
+ 		size_extra_req = ctrl->elems * ctrl->elem_size;
+ 	new_ref = kzalloc(sizeof(*new_ref) + size_extra_req, GFP_KERNEL);
+ 	if (!new_ref)
+@@ -1273,7 +1355,6 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 			elem_size = sizeof(s32);
+ 		break;
+ 	}
+-	tot_ctrl_size = elem_size * elems;
+ 
+ 	/* Sanity checks */
+ 	if (id == 0 || name == NULL || !elem_size ||
+@@ -1294,17 +1375,33 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 		handler_set_err(hdl, -EINVAL);
+ 		return NULL;
+ 	}
++	if (flags & V4L2_CTRL_FLAG_DYNAMIC_ARRAY) {
++		/*
++		 * For now only support this for one-dimensional arrays only.
++		 *
++		 * This can be relaxed in the future, but this will
++		 * require more effort.
++		 */
++		if (nr_of_dims != 1) {
++			handler_set_err(hdl, -EINVAL);
++			return NULL;
++		}
++		/* Start with just 1 element */
++		elems = 1;
++	}
+ 
++	tot_ctrl_size = elem_size * elems;
+ 	sz_extra = 0;
+ 	if (type == V4L2_CTRL_TYPE_BUTTON)
+ 		flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
+ 			V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ 	else if (type == V4L2_CTRL_TYPE_CTRL_CLASS)
+ 		flags |= V4L2_CTRL_FLAG_READ_ONLY;
+-	else if (type == V4L2_CTRL_TYPE_INTEGER64 ||
+-		 type == V4L2_CTRL_TYPE_STRING ||
+-		 type >= V4L2_CTRL_COMPOUND_TYPES ||
+-		 is_array)
++	else if (!(flags & V4L2_CTRL_FLAG_DYNAMIC_ARRAY) &&
++		 (type == V4L2_CTRL_TYPE_INTEGER64 ||
++		  type == V4L2_CTRL_TYPE_STRING ||
++		  type >= V4L2_CTRL_COMPOUND_TYPES ||
++		  is_array))
+ 		sz_extra += 2 * tot_ctrl_size;
+ 
+ 	if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const)
+@@ -1333,7 +1430,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 	ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string;
+ 	ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64;
+ 	ctrl->is_array = is_array;
++	ctrl->is_dyn_array = !!(flags & V4L2_CTRL_FLAG_DYNAMIC_ARRAY);
+ 	ctrl->elems = elems;
++	ctrl->new_elems = elems;
+ 	ctrl->nr_of_dims = nr_of_dims;
+ 	if (nr_of_dims)
+ 		memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0]));
+@@ -1346,6 +1445,16 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 	ctrl->cur.val = ctrl->val = def;
+ 	data = &ctrl[1];
+ 
++	if (ctrl->is_dyn_array) {
++		ctrl->p_dyn_alloc_elems = elems;
++		ctrl->p_dyn = kvzalloc(2 * elems * elem_size, GFP_KERNEL);
++		if (!ctrl->p_dyn) {
++			kvfree(ctrl);
++			return NULL;
++		}
++		data = ctrl->p_dyn;
++	}
++
+ 	if (!ctrl->is_int) {
+ 		ctrl->p_new.p = data;
+ 		ctrl->p_cur.p = data + tot_ctrl_size;
+@@ -1355,7 +1464,10 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 	}
+ 
+ 	if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) {
+-		ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size;
++		if (ctrl->is_dyn_array)
++			ctrl->p_def.p = &ctrl[1];
++		else
++			ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size;
+ 		memcpy(ctrl->p_def.p, p_def.p_const, elem_size);
+ 	}
+ 
+@@ -1365,6 +1477,7 @@ static struct v4l2_ctrl *v4l2_ctrl_new(s
+ 	}
+ 
+ 	if (handler_new_ref(hdl, ctrl, NULL, false, false)) {
++		kvfree(ctrl->p_dyn);
+ 		kvfree(ctrl);
+ 		return NULL;
+ 	}
+@@ -1702,6 +1815,9 @@ static int cluster_changed(struct v4l2_c
+ 			continue;
+ 		}
+ 
++		if (ctrl->elems != ctrl->new_elems)
++			ctrl_changed = true;
++
+ 		for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++)
+ 			ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
+ 				ctrl->p_cur, ctrl->p_new);
+--- a/drivers/media/v4l2-core/v4l2-ctrls-priv.h
++++ b/drivers/media/v4l2-core/v4l2-ctrls-priv.h
+@@ -57,10 +57,9 @@ void cur_to_new(struct v4l2_ctrl *ctrl);
+ void cur_to_req(struct v4l2_ctrl_ref *ref);
+ void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags);
+ void new_to_req(struct v4l2_ctrl_ref *ref);
+-void req_to_new(struct v4l2_ctrl_ref *ref);
++int req_to_new(struct v4l2_ctrl_ref *ref);
+ void send_initial_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl);
+ void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes);
+-int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new);
+ int handler_new_ref(struct v4l2_ctrl_handler *hdl,
+ 		    struct v4l2_ctrl *ctrl,
+ 		    struct v4l2_ctrl_ref **ctrl_ref,
+--- a/drivers/media/v4l2-core/v4l2-ctrls-request.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls-request.c
+@@ -143,7 +143,7 @@ v4l2_ctrl_request_hdl_ctrl_find(struct v
+ {
+ 	struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
+ 
+-	return (ref && ref->valid_p_req) ? ref->ctrl : NULL;
++	return (ref && ref->p_req_valid) ? ref->ctrl : NULL;
+ }
+ EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_ctrl_find);
+ 
+@@ -373,7 +373,7 @@ void v4l2_ctrl_request_complete(struct m
+ 			v4l2_ctrl_unlock(master);
+ 			continue;
+ 		}
+-		if (ref->valid_p_req)
++		if (ref->p_req_valid)
+ 			continue;
+ 
+ 		/* Copy the current control value into the request */
+@@ -442,7 +442,7 @@ int v4l2_ctrl_request_setup(struct media
+ 				struct v4l2_ctrl_ref *r =
+ 					find_ref(hdl, master->cluster[i]->id);
+ 
+-				if (r->valid_p_req) {
++				if (r->p_req_valid) {
+ 					have_new_data = true;
+ 					break;
+ 				}
+@@ -458,7 +458,11 @@ int v4l2_ctrl_request_setup(struct media
+ 				struct v4l2_ctrl_ref *r =
+ 					find_ref(hdl, master->cluster[i]->id);
+ 
+-				req_to_new(r);
++				ret = req_to_new(r);
++				if (ret) {
++					v4l2_ctrl_unlock(master);
++					goto error;
++				}
+ 				master->cluster[i]->is_new = 1;
+ 				r->req_done = true;
+ 			}
+@@ -490,6 +494,7 @@ int v4l2_ctrl_request_setup(struct media
+ 			break;
+ 	}
+ 
++error:
+ 	media_request_object_put(obj);
+ 	return ret;
+ }
+--- a/include/media/v4l2-ctrls.h
++++ b/include/media/v4l2-ctrls.h
+@@ -181,6 +181,8 @@ typedef void (*v4l2_ctrl_notify_fnc)(str
+  *		and/or has type %V4L2_CTRL_TYPE_STRING. In other words, &struct
+  *		v4l2_ext_control uses field p to point to the data.
+  * @is_array: If set, then this control contains an N-dimensional array.
++ * @is_dyn_array: If set, then this control contains a dynamically sized 1-dimensional array.
++ *		If this is set, then @is_array is also set.
+  * @has_volatiles: If set, then one or more members of the cluster are volatile.
+  *		Drivers should never touch this flag.
+  * @call_notify: If set, then call the handler's notify function whenever the
+@@ -201,6 +203,9 @@ typedef void (*v4l2_ctrl_notify_fnc)(str
+  * @step:	The control's step value for non-menu controls.
+  * @elems:	The number of elements in the N-dimensional array.
+  * @elem_size:	The size in bytes of the control.
++ * @new_elems:	The number of elements in p_new. This is the same as @elems,
++ *		except for dynamic arrays. In that case it is in the range of
++ *		1 to @p_dyn_alloc_elems.
+  * @dims:	The size of each dimension.
+  * @nr_of_dims:The number of dimensions in @dims.
+  * @menu_skip_mask: The control's skip mask for menu controls. This makes it
+@@ -219,15 +224,21 @@ typedef void (*v4l2_ctrl_notify_fnc)(str
+  *		:math:`ceil(\frac{maximum - minimum}{step}) + 1`.
+  *		Used only if the @type is %V4L2_CTRL_TYPE_INTEGER_MENU.
+  * @flags:	The control's flags.
+- * @cur:	Structure to store the current value.
+- * @cur.val:	The control's current value, if the @type is represented via
+- *		a u32 integer (see &enum v4l2_ctrl_type).
+- * @val:	The control's new s32 value.
+  * @priv:	The control's private pointer. For use by the driver. It is
+  *		untouched by the control framework. Note that this pointer is
+  *		not freed when the control is deleted. Should this be needed
+  *		then a new internal bitfield can be added to tell the framework
+  *		to free this pointer.
++ * @p_dyn:	Pointer to the dynamically allocated array. Only valid if
++ *		@is_dyn_array is true.
++ * @p_dyn_alloc_elems: The number of elements in the dynamically allocated
++ *		array for both the cur and new values. So @p_dyn is actually
++ *		sized for 2 * @p_dyn_alloc_elems * @elem_size. Only valid if
++ *		@is_dyn_array is true.
++ * @cur:	Structure to store the current value.
++ * @cur.val:	The control's current value, if the @type is represented via
++ *		a u32 integer (see &enum v4l2_ctrl_type).
++ * @val:	The control's new s32 value.
+  * @p_def:	The control's default value represented via a union which
+  *		provides a standard way of accessing control types
+  *		through a pointer (for compound controls only).
+@@ -256,6 +267,7 @@ struct v4l2_ctrl {
+ 	unsigned int is_string:1;
+ 	unsigned int is_ptr:1;
+ 	unsigned int is_array:1;
++	unsigned int is_dyn_array:1;
+ 	unsigned int has_volatiles:1;
+ 	unsigned int call_notify:1;
+ 	unsigned int manual_mode_value:8;
+@@ -268,6 +280,7 @@ struct v4l2_ctrl {
+ 	s64 minimum, maximum, default_value;
+ 	u32 elems;
+ 	u32 elem_size;
++	u32 new_elems;
+ 	u32 dims[V4L2_CTRL_MAX_DIMS];
+ 	u32 nr_of_dims;
+ 	union {
+@@ -280,6 +293,8 @@ struct v4l2_ctrl {
+ 	};
+ 	unsigned long flags;
+ 	void *priv;
++	void *p_dyn;
++	u32 p_dyn_alloc_elems;
+ 	s32 val;
+ 	struct {
+ 		s32 val;
+@@ -305,12 +320,22 @@ struct v4l2_ctrl {
+  *		the control has been applied. This prevents applying controls
+  *		from a cluster with multiple controls twice (when the first
+  *		control of a cluster is applied, they all are).
+- * @valid_p_req: If set, then p_req contains the control value for the request.
++ * @p_req_valid: If set, then p_req contains the control value for the request.
++ * @p_req_dyn_enomem: If set, then p_req is invalid since allocating space for
++ *		a dynamic array failed. Attempting to read this value shall
++ *		result in ENOMEM. Only valid if ctrl->is_dyn_array is true.
++ * @p_req_dyn_alloc_elems: The number of elements allocated for the dynamic
++ *		array. Only valid if @p_req_valid and ctrl->is_dyn_array are
++ *		true.
++ * @p_req_elems: The number of elements in @p_req. This is the same as
++ *		ctrl->elems, except for dynamic arrays. In that case it is in
++ *		the range of 1 to @p_req_dyn_alloc_elems. Only valid if
++ *		@p_req_valid is true.
+  * @p_req:	If the control handler containing this control reference
+  *		is bound to a media request, then this points to the
+  *		value of the control that must be applied when the request
+  *		is executed, or to the value of the control at the time
+- *		that the request was completed. If @valid_p_req is false,
++ *		that the request was completed. If @p_req_valid is false,
+  *		then this control was never set for this request and the
+  *		control will not be updated when this request is applied.
+  *
+@@ -325,7 +350,10 @@ struct v4l2_ctrl_ref {
+ 	struct v4l2_ctrl_helper *helper;
+ 	bool from_other_dev;
+ 	bool req_done;
+-	bool valid_p_req;
++	bool p_req_valid;
++	bool p_req_dyn_enomem;
++	u32 p_req_dyn_alloc_elems;
++	u32 p_req_elems;
+ 	union v4l2_ctrl_ptr p_req;
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0466-media-rpivid-Make-slice-ctrl-dynamic.patch b/target/linux/bcm27xx/patches-5.15/950-0466-media-rpivid-Make-slice-ctrl-dynamic.patch
new file mode 100644
index 0000000000..66e9783711
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0466-media-rpivid-Make-slice-ctrl-dynamic.patch
@@ -0,0 +1,334 @@
+From 4ab81f113bdf1ca8c3b0d53c777885aa33ed27f3 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 29 Apr 2021 19:17:06 +0100
+Subject: [PATCH] media: rpivid: Make slice ctrl dynamic
+
+Allows the user to submit a whole frames worth of slice headers in
+one lump along with a single bitstream dmabuf for the whole lot.
+This saves potentially a lot of bitstream copying.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.c      |   4 +
+ drivers/staging/media/rpivid/rpivid_dec.c  |  18 ++-
+ drivers/staging/media/rpivid/rpivid_h265.c | 151 +++++++++++----------
+ 3 files changed, 99 insertions(+), 74 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.c
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -63,7 +63,11 @@ static const struct rpivid_control rpivi
+ 	},
+ 	{
+ 		.cfg = {
++			.name	= "Slice param array",
+ 			.id	= V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS,
++			.type	= V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS,
++			.flags	= V4L2_CTRL_FLAG_DYNAMIC_ARRAY,
++			.dims	= { 0x1000 },
+ 		},
+ 		.required	= true,
+ 	},
+--- a/drivers/staging/media/rpivid/rpivid_dec.c
++++ b/drivers/staging/media/rpivid/rpivid_dec.c
+@@ -46,22 +46,34 @@ void rpivid_device_run(void *priv)
+ 
+ 	switch (ctx->src_fmt.pixelformat) {
+ 	case V4L2_PIX_FMT_HEVC_SLICE:
++	{
++		const struct v4l2_ctrl *ctrl;
++
+ 		run.h265.sps =
+ 			rpivid_find_control_data(ctx,
+ 						 V4L2_CID_MPEG_VIDEO_HEVC_SPS);
+ 		run.h265.pps =
+ 			rpivid_find_control_data(ctx,
+ 						 V4L2_CID_MPEG_VIDEO_HEVC_PPS);
+-		run.h265.slice_params =
+-			rpivid_find_control_data(ctx,
+-						 V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS);
+ 		run.h265.dec =
+ 			rpivid_find_control_data(ctx,
+ 						 V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS);
++
++		ctrl = rpivid_find_ctrl(ctx,
++					V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS);
++		if (!ctrl || !ctrl->elems) {
++			v4l2_err(&dev->v4l2_dev, "%s: Missing slice params\n",
++				 __func__);
++			goto fail;
++		}
++		run.h265.slice_ents = ctrl->elems;
++		run.h265.slice_params = ctrl->p_cur.p;
++
+ 		run.h265.scaling_matrix =
+ 			rpivid_find_control_data(ctx,
+ 						 V4L2_CID_MPEG_VIDEO_HEVC_SCALING_MATRIX);
+ 		break;
++	}
+ 
+ 	default:
+ 		break;
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -245,7 +245,6 @@ struct rpivid_dec_state {
+ 
+ 	// Slice vars
+ 	unsigned int slice_idx;
+-	bool frame_end;
+ 	bool slice_temporal_mvp;  /* Slice flag but constant for frame */
+ 
+ 	// Temp vars per run - don't actually need to persist
+@@ -740,7 +739,8 @@ static void new_slice_segment(struct rpi
+ 				V4L2_HEVC_PPS_FLAG_CONSTRAINED_INTRA_PRED))
+ 						<< 24));
+ 
+-	if ((sps->flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED) != 0)
++	if (!s->start_ts &&
++	    (sps->flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED) != 0)
+ 		write_scaling_factors(de);
+ 
+ 	if (!s->dependent_slice_segment_flag) {
+@@ -1111,7 +1111,8 @@ static int wpp_end_previous_slice(struct
+  * next chunk code simpler
+  */
+ static int wpp_decode_slice(struct rpivid_dec_env *const de,
+-			    const struct rpivid_dec_state *const s)
++			    const struct rpivid_dec_state *const s,
++			    bool last_slice)
+ {
+ 	bool reset_qp_y = true;
+ 	const bool indep = !s->dependent_slice_segment_flag;
+@@ -1150,7 +1151,7 @@ static int wpp_decode_slice(struct rpivi
+ 			0, 0, s->start_ctb_x, s->start_ctb_y,
+ 			s->slice_qp, slice_reg_const(s));
+ 
+-	if (s->frame_end) {
++	if (last_slice) {
+ 		rv = wpp_entry_fill(de, s, s->ctb_height - 1);
+ 		if (rv)
+ 			return rv;
+@@ -1229,7 +1230,8 @@ static int end_previous_slice(struct rpi
+ }
+ 
+ static int decode_slice(struct rpivid_dec_env *const de,
+-			const struct rpivid_dec_state *const s)
++			const struct rpivid_dec_state *const s,
++			bool last_slice)
+ {
+ 	bool reset_qp_y;
+ 	unsigned int tile_x = ctb_to_tile_x(s, s->start_ctb_x);
+@@ -1275,7 +1277,7 @@ static int decode_slice(struct rpivid_de
+ 	 * now, otherwise this will be done at the start of the next slice
+ 	 * when it will be known where this slice finishes
+ 	 */
+-	if (s->frame_end) {
++	if (last_slice) {
+ 		rv = tile_entry_fill(de, s,
+ 				     s->tile_width - 1,
+ 				     s->tile_height - 1);
+@@ -1670,11 +1672,13 @@ static u32 mk_config2(const struct rpivi
+ static void rpivid_h265_setup(struct rpivid_ctx *ctx, struct rpivid_run *run)
+ {
+ 	struct rpivid_dev *const dev = ctx->dev;
+-	const struct v4l2_ctrl_hevc_slice_params *const sh =
+-						run->h265.slice_params;
+ 	const struct v4l2_ctrl_hevc_decode_params *const dec =
+ 						run->h265.dec;
+-//	const struct v4l2_hevc_pred_weight_table *pred_weight_table;
++	/* sh0 used where slice header contents should be constant over all
++	 * slices, or first slice of frame
++	 */
++	const struct v4l2_ctrl_hevc_slice_params *const sh0 =
++					run->h265.slice_params;
+ 	struct rpivid_q_aux *dpb_q_aux[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ 	struct rpivid_dec_state *const s = ctx->state;
+ 	struct vb2_queue *vq;
+@@ -1684,20 +1688,18 @@ static void rpivid_h265_setup(struct rpi
+ 	int use_aux;
+ 	int rv;
+ 	bool slice_temporal_mvp;
++	bool frame_end;
+ 
+ 	xtrace_in(dev, de);
++	s->sh = NULL;  // Avoid use until in the slice loop
+ 
+-//	pred_weight_table = &sh->pred_weight_table;
+-
+-	s->frame_end =
++	frame_end =
+ 		((run->src->flags & V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF) == 0);
+ 
+-	slice_temporal_mvp = (sh->flags &
++	slice_temporal_mvp = (sh0->flags &
+ 		   V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_TEMPORAL_MVP_ENABLED);
+ 
+ 	if (de && de->state != RPIVID_DECODE_END) {
+-		++s->slice_idx;
+-
+ 		switch (de->state) {
+ 		case RPIVID_DECODE_SLICE_CONTINUE:
+ 			// Expected state
+@@ -1830,7 +1832,7 @@ static void rpivid_h265_setup(struct rpi
+ 		de->rpi_config2 = mk_config2(s);
+ 		de->rpi_framesize = (s->sps.pic_height_in_luma_samples << 16) |
+ 				    s->sps.pic_width_in_luma_samples;
+-		de->rpi_currpoc = sh->slice_pic_order_cnt;
++		de->rpi_currpoc = sh0->slice_pic_order_cnt;
+ 
+ 		if (s->sps.flags &
+ 		    V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED) {
+@@ -1839,17 +1841,17 @@ static void rpivid_h265_setup(struct rpi
+ 
+ 		s->slice_idx = 0;
+ 
+-		if (sh->slice_segment_addr != 0) {
++		if (sh0->slice_segment_addr != 0) {
+ 			v4l2_warn(&dev->v4l2_dev,
+ 				  "New frame but segment_addr=%d\n",
+-				  sh->slice_segment_addr);
++				  sh0->slice_segment_addr);
+ 			goto fail;
+ 		}
+ 
+ 		/* Allocate a bitbuf if we need one - don't need one if single
+ 		 * slice as we can use the src buf directly
+ 		 */
+-		if (!s->frame_end && !de->bit_copy_gptr->ptr) {
++		if (!frame_end && !de->bit_copy_gptr->ptr) {
+ 			size_t bits_alloc;
+ 			bits_alloc = rpivid_bit_buf_size(s->sps.pic_width_in_luma_samples,
+ 							 s->sps.pic_height_in_luma_samples,
+@@ -1873,21 +1875,7 @@ static void rpivid_h265_setup(struct rpi
+ 	s->src_addr = 0;
+ 	s->src_buf = NULL;
+ 
+-	if (run->src->planes[0].bytesused < (sh->bit_size + 7) / 8) {
+-		v4l2_warn(&dev->v4l2_dev,
+-			  "Bit size %d > bytesused %d\n",
+-			  sh->bit_size, run->src->planes[0].bytesused);
+-		goto fail;
+-	}
+-	if (sh->data_bit_offset >= sh->bit_size ||
+-	    sh->bit_size - sh->data_bit_offset < 8) {
+-		v4l2_warn(&dev->v4l2_dev,
+-			  "Bit size %d < Bit offset %d + 8\n",
+-			  sh->bit_size, sh->data_bit_offset);
+-		goto fail;
+-	}
+-
+-	if (s->frame_end)
++	if (frame_end)
+ 		s->src_addr = vb2_dma_contig_plane_dma_addr(&run->src->vb2_buf,
+ 							    0);
+ 	if (!s->src_addr)
+@@ -1898,44 +1886,65 @@ static void rpivid_h265_setup(struct rpi
+ 	}
+ 
+ 	// Pre calc a few things
+-	s->sh = sh;
+ 	s->dec = dec;
+-	s->slice_qp = 26 + s->pps.init_qp_minus26 + s->sh->slice_qp_delta;
+-	s->max_num_merge_cand = sh->slice_type == HEVC_SLICE_I ?
++	for (i = 0; i != run->h265.slice_ents; ++i) {
++		const struct v4l2_ctrl_hevc_slice_params *const sh = sh0 + i;
++		const bool last_slice = frame_end && i + 1 == run->h265.slice_ents;
++
++		s->sh = sh;
++
++		if (run->src->planes[0].bytesused < (sh->bit_size + 7) / 8) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Bit size %d > bytesused %d\n",
++				  sh->bit_size, run->src->planes[0].bytesused);
++			goto fail;
++		}
++		if (sh->data_bit_offset >= sh->bit_size ||
++		    sh->bit_size - sh->data_bit_offset < 8) {
++			v4l2_warn(&dev->v4l2_dev,
++				  "Bit size %d < Bit offset %d + 8\n",
++				  sh->bit_size, sh->data_bit_offset);
++			goto fail;
++		}
++
++		s->slice_qp = 26 + s->pps.init_qp_minus26 + sh->slice_qp_delta;
++		s->max_num_merge_cand = sh->slice_type == HEVC_SLICE_I ?
++						0 :
++						(5 - sh->five_minus_max_num_merge_cand);
++		s->dependent_slice_segment_flag =
++			((sh->flags &
++			  V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT) != 0);
++
++		s->nb_refs[0] = (sh->slice_type == HEVC_SLICE_I) ?
++					0 :
++					sh->num_ref_idx_l0_active_minus1 + 1;
++		s->nb_refs[1] = (sh->slice_type != HEVC_SLICE_B) ?
+ 					0 :
+-					(5 - sh->five_minus_max_num_merge_cand);
+-	// * SH DSS flag invented by me - but clearly needed
+-	s->dependent_slice_segment_flag =
+-		((sh->flags &
+-		  V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT) != 0);
+-
+-	s->nb_refs[0] = (sh->slice_type == HEVC_SLICE_I) ?
+-				0 :
+-				sh->num_ref_idx_l0_active_minus1 + 1;
+-	s->nb_refs[1] = (sh->slice_type != HEVC_SLICE_B) ?
+-				0 :
+-				sh->num_ref_idx_l1_active_minus1 + 1;
+-
+-	if (s->sps.flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED)
+-		populate_scaling_factors(run, de, s);
+-
+-	// Calc all the random coord info to avoid repeated conversion in/out
+-	s->start_ts = s->ctb_addr_rs_to_ts[sh->slice_segment_addr];
+-	s->start_ctb_x = sh->slice_segment_addr % de->pic_width_in_ctbs_y;
+-	s->start_ctb_y = sh->slice_segment_addr / de->pic_width_in_ctbs_y;
+-	// Last CTB of previous slice
+-	prev_rs = !s->start_ts ? 0 : s->ctb_addr_ts_to_rs[s->start_ts - 1];
+-	s->prev_ctb_x = prev_rs % de->pic_width_in_ctbs_y;
+-	s->prev_ctb_y = prev_rs / de->pic_width_in_ctbs_y;
++					sh->num_ref_idx_l1_active_minus1 + 1;
+ 
+-	if ((s->pps.flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED))
+-		rv = wpp_decode_slice(de, s);
+-	else
+-		rv = decode_slice(de, s);
+-	if (rv)
+-		goto fail;
++		if (s->sps.flags & V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED)
++			populate_scaling_factors(run, de, s);
++
++		/* Calc all the random coord info to avoid repeated conversion in/out */
++		s->start_ts = s->ctb_addr_rs_to_ts[sh->slice_segment_addr];
++		s->start_ctb_x = sh->slice_segment_addr % de->pic_width_in_ctbs_y;
++		s->start_ctb_y = sh->slice_segment_addr / de->pic_width_in_ctbs_y;
++		/* Last CTB of previous slice */
++		prev_rs = !s->start_ts ? 0 : s->ctb_addr_ts_to_rs[s->start_ts - 1];
++		s->prev_ctb_x = prev_rs % de->pic_width_in_ctbs_y;
++		s->prev_ctb_y = prev_rs / de->pic_width_in_ctbs_y;
++
++		if ((s->pps.flags & V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED))
++			rv = wpp_decode_slice(de, s, last_slice);
++		else
++			rv = decode_slice(de, s, last_slice);
++		if (rv)
++			goto fail;
++
++		++s->slice_idx;
++	}
+ 
+-	if (!s->frame_end) {
++	if (!frame_end) {
+ 		xtrace_ok(dev, de);
+ 		return;
+ 	}
+@@ -2054,8 +2063,8 @@ static void rpivid_h265_setup(struct rpi
+ fail:
+ 	if (de)
+ 		// Actual error reporting happens in Trigger
+-		de->state = s->frame_end ? RPIVID_DECODE_ERROR_DONE :
+-					   RPIVID_DECODE_ERROR_CONTINUE;
++		de->state = frame_end ? RPIVID_DECODE_ERROR_DONE :
++					RPIVID_DECODE_ERROR_CONTINUE;
+ 	xtrace_fail(dev, de);
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0467-media-rpivid-Only-create-aux-entries-for-H265-if-nee.patch b/target/linux/bcm27xx/patches-5.15/950-0467-media-rpivid-Only-create-aux-entries-for-H265-if-nee.patch
new file mode 100644
index 0000000000..8fcd0c20da
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0467-media-rpivid-Only-create-aux-entries-for-H265-if-nee.patch
@@ -0,0 +1,111 @@
+From 9b0eddfd7341525e0e3074a7f6202f5ccd431b05 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Thu, 6 May 2021 13:48:05 +0100
+Subject: [PATCH] media: rpivid: Only create aux entries for H265 if
+ needed
+
+Only create aux entries of mv info for frames where that info might
+be used by a later frame.  This saves some memory bandwidth and
+potentially some memory.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid_h265.c | 38 +++++++++++++---------
+ 1 file changed, 23 insertions(+), 15 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -246,6 +246,8 @@ struct rpivid_dec_state {
+ 	// Slice vars
+ 	unsigned int slice_idx;
+ 	bool slice_temporal_mvp;  /* Slice flag but constant for frame */
++	bool use_aux;
++	bool mk_aux;
+ 
+ 	// Temp vars per run - don't actually need to persist
+ 	u8 *src_buf;
+@@ -1657,7 +1659,7 @@ static u32 mk_config2(const struct rpivi
+ 		c |= BIT(13);
+ 	if (sps->flags & V4L2_HEVC_SPS_FLAG_STRONG_INTRA_SMOOTHING_ENABLED)
+ 		c |= BIT(14);
+-	if (sps->flags & V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED)
++	if (s->mk_aux)
+ 		c |= BIT(15); /* Write motion vectors to external memory */
+ 	c |= (pps->log2_parallel_merge_level_minus2 + 2) << 16;
+ 	if (s->slice_temporal_mvp)
+@@ -1669,6 +1671,14 @@ static u32 mk_config2(const struct rpivi
+ 	return c;
+ }
+ 
++static inline bool is_ref_unit_type(const unsigned int nal_unit_type)
++{
++	/* From Table 7-1
++	 * True for 1, 3, 5, 7, 9, 11, 13, 15
++	 */
++	return (nal_unit_type & ~0xe) != 0;
++}
++
+ static void rpivid_h265_setup(struct rpivid_ctx *ctx, struct rpivid_run *run)
+ {
+ 	struct rpivid_dev *const dev = ctx->dev;
+@@ -1685,7 +1695,6 @@ static void rpivid_h265_setup(struct rpi
+ 	struct rpivid_dec_env *de = ctx->dec0;
+ 	unsigned int prev_rs;
+ 	unsigned int i;
+-	int use_aux;
+ 	int rv;
+ 	bool slice_temporal_mvp;
+ 	bool frame_end;
+@@ -1828,6 +1837,16 @@ static void rpivid_h265_setup(struct rpi
+ 		 */
+ 		s->slice_temporal_mvp = slice_temporal_mvp;
+ 
++		/*
++		 * Need Aux ents for all (ref) DPB ents if temporal MV could
++		 * be enabled for any pic
++		 */
++		s->use_aux = ((s->sps.flags &
++			       V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED) != 0);
++		s->mk_aux = s->use_aux &&
++			    (s->sps.sps_max_sub_layers_minus1 >= sh0->nuh_temporal_id_plus1 ||
++			     is_ref_unit_type(sh0->nal_unit_type));
++
+ 		// Phase 2 reg pre-calc
+ 		de->rpi_config2 = mk_config2(s);
+ 		de->rpi_framesize = (s->sps.pic_height_in_luma_samples << 16) |
+@@ -1952,15 +1971,6 @@ static void rpivid_h265_setup(struct rpi
+ 	// Frame end
+ 	memset(dpb_q_aux, 0,
+ 	       sizeof(*dpb_q_aux) * V4L2_HEVC_DPB_ENTRIES_NUM_MAX);
+-	/*
+-	 * Need Aux ents for all (ref) DPB ents if temporal MV could
+-	 * be enabled for any pic
+-	 * ** At the moment we create aux ents for all pics whether or not
+-	 *    they are ref - they should then be discarded by the DPB-aux
+-	 *    garbage collection code
+-	 */
+-	use_aux = ((s->sps.flags &
+-		  V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED) != 0);
+ 
+ 	// Locate ref frames
+ 	// At least in the current implementation this is constant across all
+@@ -1994,7 +2004,7 @@ static void rpivid_h265_setup(struct rpi
+ 			continue;
+ 		}
+ 
+-		if (use_aux) {
++		if (s->use_aux) {
+ 			dpb_q_aux[i] = aux_q_ref_idx(ctx, buffer_index);
+ 			if (!dpb_q_aux[i])
+ 				v4l2_warn(&dev->v4l2_dev,
+@@ -2016,9 +2026,7 @@ static void rpivid_h265_setup(struct rpi
+ 	// now
+ 	aux_q_release(ctx, &s->frame_aux);
+ 
+-	if (use_aux) {
+-		// New frame so new aux ent
+-		// ??? Do we need this if non-ref ??? can we tell
++	if (s->mk_aux) {
+ 		s->frame_aux = aux_q_new(ctx, run->dst->vb2_buf.index);
+ 
+ 		if (!s->frame_aux) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0468-usb-xhci-workaround-for-bogus-SET_DEQ_PENDING-endpoi.patch b/target/linux/bcm27xx/patches-5.15/950-0468-usb-xhci-workaround-for-bogus-SET_DEQ_PENDING-endpoi.patch
new file mode 100644
index 0000000000..f9e24ab3ea
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0468-usb-xhci-workaround-for-bogus-SET_DEQ_PENDING-endpoi.patch
@@ -0,0 +1,41 @@
+From c2b82650365540cc1e1b93b7ad2c44103fc8bb76 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Wed, 11 Aug 2021 15:33:57 +0100
+Subject: [PATCH] usb: xhci: workaround for bogus SET_DEQ_PENDING
+ endpoint state
+
+See https://github.com/raspberrypi/linux/issues/3981
+
+An unknown unsafe memory access can result in the ep_state variable
+in xhci_virt_ep being trampled with a stuck SET_DEQ_PENDING state
+despite successful completion of a Set TR Deq Pointer command.
+
+All URB enqueue/dequeue calls for the endpoint will fail in this state
+so no transfers are possible until the device is reconnected.
+
+As a workaround, clear the flag if we see it set and issue a new Set
+TR Deq command anyway - this should be harmless, as a prior Set TR Deq
+command will only have been issued in the Stopped state, and if the
+endpoint is Running then the controller is required to ignore it and
+respond with a Context State Error event TRB.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/xhci-ring.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -677,9 +677,9 @@ deq_found:
+ 	}
+ 
+ 	if ((ep->ep_state & SET_DEQ_PENDING)) {
+-		xhci_warn(xhci, "Set TR Deq already pending, don't submit for 0x%pad\n",
+-			  &addr);
+-		return -EBUSY;
++		xhci_warn(xhci, "WARN A Set TR Deq Ptr command is pending for slot %u ep %u\n",
++			  slot_id, ep_index);
++		ep->ep_state &= ~SET_DEQ_PENDING;
+ 	}
+ 
+ 	/* This function gets called from contexts where it cannot sleep */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0469-media-i2c-imx477-Allow-control-of-on-sensor-DPC.patch b/target/linux/bcm27xx/patches-5.15/950-0469-media-i2c-imx477-Allow-control-of-on-sensor-DPC.patch
new file mode 100644
index 0000000000..c6c4cbc462
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0469-media-i2c-imx477-Allow-control-of-on-sensor-DPC.patch
@@ -0,0 +1,40 @@
+From 2b6edd13bb5152c659466987846b481df8b37393 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Wed, 8 Sep 2021 14:15:17 +0100
+Subject: [PATCH] media: i2c: imx477: Allow control of on-sensor DPC
+
+A module parameter "dpc_enable" is added to allow the control of the
+sensor's on-board DPC (Defective Pixel Correction) function.
+
+This is a global setting to be configured before using the sensor;
+there is no intention that this would ever be changed on-the-fly.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -21,6 +21,10 @@
+ #include <media/v4l2-fwnode.h>
+ #include <media/v4l2-mediabus.h>
+ 
++static int dpc_enable = 1;
++module_param(dpc_enable, int, 0644);
++MODULE_PARM_DESC(dpc_enable, "Enable on-sensor DPC");
++
+ #define IMX477_REG_VALUE_08BIT		1
+ #define IMX477_REG_VALUE_16BIT		2
+ 
+@@ -1713,6 +1717,10 @@ static int imx477_start_streaming(struct
+ 		return ret;
+ 	}
+ 
++	/* Set on-sensor DPC. */
++	imx477_write_reg(imx477, 0x0b05, IMX477_REG_VALUE_08BIT, !!dpc_enable);
++	imx477_write_reg(imx477, 0x0b06, IMX477_REG_VALUE_08BIT, !!dpc_enable);
++
+ 	/* Apply customized values from user */
+ 	ret =  __v4l2_ctrl_handler_setup(imx477->sd.ctrl_handler);
+ 	if (ret)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0470-sound-usb-add-device-quirks-for-A4Tech-FHD-1080p-web.patch b/target/linux/bcm27xx/patches-5.15/950-0470-sound-usb-add-device-quirks-for-A4Tech-FHD-1080p-web.patch
new file mode 100644
index 0000000000..705f05913b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0470-sound-usb-add-device-quirks-for-A4Tech-FHD-1080p-web.patch
@@ -0,0 +1,27 @@
+From 01160071692034601de24ff811b1996481bfea55 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Thu, 15 Apr 2021 13:15:14 +0100
+Subject: [PATCH] sound/usb: add device quirks for A4Tech FHD 1080p
+ webcams
+
+These devices use a type of Sonix chipset that produces broken microphone
+data if suspended/resumed.
+
+They also don't support readback of the sample rate.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ sound/usb/quirks.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/sound/usb/quirks.c
++++ b/sound/usb/quirks.c
+@@ -1900,6 +1900,8 @@ static const struct usb_audio_quirk_flag
+ 		   QUIRK_FLAG_ALIGN_TRANSFER),
+ 	DEVICE_FLG(0x1224, 0x2a25, /* Jieli Technology USB PHY 2.0 */
+ 		   QUIRK_FLAG_GET_SAMPLE_RATE),
++	DEVICE_FLG(0x09da, 0x2695, /* A4Tech FHD 1080p webcam */
++		   QUIRK_FLAG_DISABLE_AUTOSUSPEND | QUIRK_FLAG_GET_SAMPLE_RATE),
+ 
+ 	/* Vendor matches */
+ 	VENDOR_FLG(0x045e, /* MS Lifecam */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0471-sound-usb-call-usb_autopm_get_interface-for-devices-.patch b/target/linux/bcm27xx/patches-5.15/950-0471-sound-usb-call-usb_autopm_get_interface-for-devices-.patch
new file mode 100644
index 0000000000..d61c59b907
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0471-sound-usb-call-usb_autopm_get_interface-for-devices-.patch
@@ -0,0 +1,37 @@
+From cea2dbec1b8e84b95459f4a589c613b84e3d9737 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Wed, 15 Sep 2021 17:56:45 +0100
+Subject: [PATCH] sound/usb: call usb_autopm_get_interface() for
+ devices that should not be suspended
+
+Webcams with microphones are composite devices, and autosuspend is set
+at the device level. If uvcvideo is probed after snd-usb-audio, the effect
+of the quirk applied by snd-usb-audio is undone by uvcvideo's global
+application of autosuspend.
+
+Incrementing the interface's PM refcount in such cases prevents runtime PM
+from happening, thus the device is left active.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ sound/usb/card.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+--- a/sound/usb/card.c
++++ b/sound/usb/card.c
+@@ -817,8 +817,14 @@ static int usb_audio_probe(struct usb_in
+ 	if (ignore_ctl_error)
+ 		chip->quirk_flags |= QUIRK_FLAG_IGNORE_CTL_ERROR;
+ 
+-	if (chip->quirk_flags & QUIRK_FLAG_DISABLE_AUTOSUSPEND)
++	if (chip->quirk_flags & QUIRK_FLAG_DISABLE_AUTOSUSPEND) {
++		/*
++		* Grab the interface, because on a webcam uvcvideo may race
++		* with snd-usb-audio during probe and re-enable autosuspend.
++		*/
++		usb_autopm_get_interface(intf);
+ 		usb_disable_autosuspend(interface_to_usbdev(intf));
++	}
+ 
+ 	/*
+ 	 * For devices with more than one control interface, we assume the
diff --git a/target/linux/bcm27xx/patches-5.15/950-0472-staging-vchiq_arm-Add-36-bit-address-support.patch b/target/linux/bcm27xx/patches-5.15/950-0472-staging-vchiq_arm-Add-36-bit-address-support.patch
new file mode 100644
index 0000000000..803b72e0c3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0472-staging-vchiq_arm-Add-36-bit-address-support.patch
@@ -0,0 +1,262 @@
+From 3087dcaf4bfed16ac0e1a124a3196ed3384f5ef3 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 1 Nov 2018 17:31:37 +0000
+Subject: [PATCH] staging: vchiq_arm: Add 36-bit address support
+
+Conditional on a new compatible string, change the pagelist encoding
+such that the top 24 bits are the pfn, leaving 8 bits for run length
+(-1), giving a 36-bit address range.
+
+Manage the split between addresses for the VPU and addresses for the
+40-bit DMA controller with a dedicated DMA device pointer that on non-
+BCM2711 platforms is the same as the main VCHIQ device. This allows
+the VCHIQ node to stay in the usual place in the DT.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ .../interface/vchiq_arm/vchiq_arm.c           | 126 ++++++++++++------
+ .../interface/vchiq_arm/vchiq_arm.h           |   1 +
+ 2 files changed, 89 insertions(+), 38 deletions(-)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -79,6 +79,11 @@ static struct vchiq_drvdata bcm2836_drvd
+ 	.cache_line_size = 64,
+ };
+ 
++static struct vchiq_drvdata bcm2711_drvdata = {
++	.cache_line_size = 64,
++	.use_36bit_addrs = true,
++};
++
+ struct vchiq_2835_state {
+ 	int inited;
+ 	struct vchiq_arm_state arm_state;
+@@ -108,11 +113,13 @@ static void __iomem *g_regs;
+  * of 32.
+  */
+ static unsigned int g_cache_line_size = 32;
++static unsigned int g_use_36bit_addrs = 0;
+ static unsigned int g_fragments_size;
+ static char *g_fragments_base;
+ static char *g_free_fragments;
+ static struct semaphore g_free_fragments_sema;
+ static struct device *g_dev;
++static struct device *g_dma_dev;
+ 
+ static DEFINE_SEMAPHORE(g_free_fragments_mutex);
+ 
+@@ -142,7 +149,7 @@ static void
+ cleanup_pagelistinfo(struct vchiq_pagelist_info *pagelistinfo)
+ {
+ 	if (pagelistinfo->scatterlist_mapped) {
+-		dma_unmap_sg(g_dev, pagelistinfo->scatterlist,
++		dma_unmap_sg(g_dma_dev, pagelistinfo->scatterlist,
+ 			     pagelistinfo->num_pages, pagelistinfo->dma_dir);
+ 	}
+ 
+@@ -291,7 +298,7 @@ create_pagelist(char *buf, char __user *
+ 		count -= len;
+ 	}
+ 
+-	dma_buffers = dma_map_sg(g_dev,
++	dma_buffers = dma_map_sg(g_dma_dev,
+ 				 scatterlist,
+ 				 num_pages,
+ 				 pagelistinfo->dma_dir);
+@@ -305,25 +312,60 @@ create_pagelist(char *buf, char __user *
+ 
+ 	/* Combine adjacent blocks for performance */
+ 	k = 0;
+-	for_each_sg(scatterlist, sg, dma_buffers, i) {
+-		u32 len = sg_dma_len(sg);
+-		u32 addr = sg_dma_address(sg);
+-
+-		/* Note: addrs is the address + page_count - 1
+-		 * The firmware expects blocks after the first to be page-
+-		 * aligned and a multiple of the page size
+-		 */
+-		WARN_ON(len == 0);
+-		WARN_ON(i && (i != (dma_buffers - 1)) && (len & ~PAGE_MASK));
+-		WARN_ON(i && (addr & ~PAGE_MASK));
+-		if (k > 0 &&
+-		    ((addrs[k - 1] & PAGE_MASK) +
+-		     (((addrs[k - 1] & ~PAGE_MASK) + 1) << PAGE_SHIFT))
+-		    == (addr & PAGE_MASK))
+-			addrs[k - 1] += ((len + PAGE_SIZE - 1) >> PAGE_SHIFT);
+-		else
+-			addrs[k++] = (addr & PAGE_MASK) |
+-				(((len + PAGE_SIZE - 1) >> PAGE_SHIFT) - 1);
++	if (g_use_36bit_addrs) {
++		for_each_sg(scatterlist, sg, dma_buffers, i) {
++			u32 len = sg_dma_len(sg);
++			u64 addr = sg_dma_address(sg);
++			u32 page_id = (u32)((addr >> 4) & ~0xff);
++			u32 sg_pages = (len + PAGE_SIZE - 1) >> PAGE_SHIFT;
++
++			/* Note: addrs is the address + page_count - 1
++			 * The firmware expects blocks after the first to be page-
++			 * aligned and a multiple of the page size
++			 */
++			WARN_ON(len == 0);
++			WARN_ON(i &&
++				(i != (dma_buffers - 1)) && (len & ~PAGE_MASK));
++			WARN_ON(i && (addr & ~PAGE_MASK));
++			WARN_ON(upper_32_bits(addr) > 0xf);
++			if (k > 0 &&
++			    ((addrs[k - 1] & ~0xff) +
++			     (((addrs[k - 1] & 0xff) + 1) << 8)
++			     == page_id)) {
++				u32 inc_pages = min(sg_pages,
++						    0xff - (addrs[k - 1] & 0xff));
++				addrs[k - 1] += inc_pages;
++				page_id += inc_pages << 8;
++				sg_pages -= inc_pages;
++			}
++			while (sg_pages) {
++				u32 inc_pages = min(sg_pages, 0x100u);
++				addrs[k++] = page_id | (inc_pages - 1);
++				page_id += inc_pages << 8;
++				sg_pages -= inc_pages;
++			}
++		}
++	} else {
++		for_each_sg(scatterlist, sg, dma_buffers, i) {
++			u32 len = sg_dma_len(sg);
++			u32 addr = sg_dma_address(sg);
++			u32 new_pages = (len + PAGE_SIZE - 1) >> PAGE_SHIFT;
++
++			/* Note: addrs is the address + page_count - 1
++			 * The firmware expects blocks after the first to be page-
++			 * aligned and a multiple of the page size
++			 */
++			WARN_ON(len == 0);
++			WARN_ON(i && (i != (dma_buffers - 1)) && (len & ~PAGE_MASK));
++			WARN_ON(i && (addr & ~PAGE_MASK));
++			if (k > 0 &&
++			    ((addrs[k - 1] & PAGE_MASK) +
++			     (((addrs[k - 1] & ~PAGE_MASK) + 1) << PAGE_SHIFT))
++			    == (addr & PAGE_MASK))
++				addrs[k - 1] += new_pages;
++			else
++				addrs[k++] = (addr & PAGE_MASK) | (new_pages - 1);
++		}
+ 	}
+ 
+ 	/* Partial cache lines (fragments) require special measures */
+@@ -367,7 +409,7 @@ free_pagelist(struct vchiq_pagelist_info
+ 	 * NOTE: dma_unmap_sg must be called before the
+ 	 * cpu can touch any of the data/pages.
+ 	 */
+-	dma_unmap_sg(g_dev, pagelistinfo->scatterlist,
++	dma_unmap_sg(g_dma_dev, pagelistinfo->scatterlist,
+ 		     pagelistinfo->num_pages, pagelistinfo->dma_dir);
+ 	pagelistinfo->scatterlist_mapped = 0;
+ 
+@@ -425,6 +467,7 @@ free_pagelist(struct vchiq_pagelist_info
+ int vchiq_platform_init(struct platform_device *pdev, struct vchiq_state *state)
+ {
+ 	struct device *dev = &pdev->dev;
++	struct device *dma_dev = NULL;
+ 	struct vchiq_drvdata *drvdata = platform_get_drvdata(pdev);
+ 	struct rpi_firmware *fw = drvdata->fw;
+ 	struct vchiq_slot_zero *vchiq_slot_zero;
+@@ -446,6 +489,24 @@ int vchiq_platform_init(struct platform_
+ 	g_cache_line_size = drvdata->cache_line_size;
+ 	g_fragments_size = 2 * g_cache_line_size;
+ 
++	if (drvdata->use_36bit_addrs) {
++		struct device_node *dma_node =
++			of_find_compatible_node(NULL, NULL, "brcm,bcm2711-dma");
++
++		if (dma_node) {
++			struct platform_device *pdev;
++
++			pdev = of_find_device_by_node(dma_node);
++			if (pdev)
++				dma_dev = &pdev->dev;
++			of_node_put(dma_node);
++			g_use_36bit_addrs = true;
++		} else {
++			dev_err(dev, "40-bit DMA controller not found\n");
++			return -EINVAL;
++		}
++	}
++
+ 	/* Allocate space for the channels in coherent memory */
+ 	slot_mem_size = PAGE_ALIGN(TOTAL_SLOTS * VCHIQ_SLOT_SIZE);
+ 	frag_mem_size = PAGE_ALIGN(g_fragments_size * MAX_FRAGMENTS);
+@@ -458,13 +519,14 @@ int vchiq_platform_init(struct platform_
+ 	}
+ 
+ 	WARN_ON(((unsigned long)slot_mem & (PAGE_SIZE - 1)) != 0);
++	channelbase = slot_phys;
+ 
+ 	vchiq_slot_zero = vchiq_init_slots(slot_mem, slot_mem_size);
+ 	if (!vchiq_slot_zero)
+ 		return -EINVAL;
+ 
+ 	vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX] =
+-		(int)slot_phys + slot_mem_size;
++		channelbase + slot_mem_size;
+ 	vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX] =
+ 		MAX_FRAGMENTS;
+ 
+@@ -498,7 +560,6 @@ int vchiq_platform_init(struct platform_
+ 	}
+ 
+ 	/* Send the base address of the slots to VideoCore */
+-	channelbase = slot_phys;
+ 	err = rpi_firmware_property(fw, RPI_FIRMWARE_VCHIQ_INIT,
+ 				    &channelbase, sizeof(channelbase));
+ 	if (err || channelbase) {
+@@ -507,6 +568,8 @@ int vchiq_platform_init(struct platform_
+ 	}
+ 
+ 	g_dev = dev;
++	g_dma_dev = dma_dev ?: dev;
++
+ 	vchiq_log_info(vchiq_arm_log_level,
+ 		"vchiq_init - done (slots %pK, phys %pad)",
+ 		vchiq_slot_zero, &slot_phys);
+@@ -1768,6 +1831,7 @@ void vchiq_platform_conn_state_changed(s
+ static const struct of_device_id vchiq_of_match[] = {
+ 	{ .compatible = "brcm,bcm2835-vchiq", .data = &bcm2835_drvdata },
+ 	{ .compatible = "brcm,bcm2836-vchiq", .data = &bcm2836_drvdata },
++	{ .compatible = "brcm,bcm2711-vchiq", .data = &bcm2711_drvdata },
+ 	{},
+ };
+ MODULE_DEVICE_TABLE(of, vchiq_of_match);
+@@ -1800,22 +1864,8 @@ vchiq_register_child(struct platform_dev
+ 
+ 	child->dev.of_node = np;
+ 
+-	/*
+-	 * We want the dma-ranges etc to be copied from a device with the
+-	 * correct dma-ranges for the VPU.
+-	 * VCHIQ on Pi4 is now under scb which doesn't get those dma-ranges.
+-	 * Take the "dma" node as going to be suitable as it sees the world
+-	 * through the same eyes as the VPU.
+-	 */
+-	np = of_find_node_by_path("dma");
+-	if (!np)
+-		np = pdev->dev.of_node;
+-
+ 	of_dma_configure(&child->dev, np, true);
+ 
+-	if (np != pdev->dev.of_node)
+-		of_node_put(np);
+-
+ 	return child;
+ }
+ 
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
+@@ -61,6 +61,7 @@ struct vchiq_arm_state {
+ 
+ struct vchiq_drvdata {
+ 	const unsigned int cache_line_size;
++	const bool use_36bit_addrs;
+ 	struct rpi_firmware *fw;
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0473-staging-vchiq_arm-children-inherit-DMA-config.patch b/target/linux/bcm27xx/patches-5.15/950-0473-staging-vchiq_arm-children-inherit-DMA-config.patch
new file mode 100644
index 0000000000..66e24dc487
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0473-staging-vchiq_arm-children-inherit-DMA-config.patch
@@ -0,0 +1,36 @@
+From dad69811fe68eade1b9899efd0186402f65742e0 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 21 Jul 2020 17:34:09 +0100
+Subject: [PATCH] staging: vchiq_arm: children inherit DMA config
+
+Although it is no longer necessary for vchiq's children to have a
+different DMA configuration to the parent, they do still need to
+explicitly to have their DMA configuration set - to be that of the
+parent.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ .../vc04_services/interface/vchiq_arm/vchiq_arm.c      | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -1864,8 +1864,18 @@ vchiq_register_child(struct platform_dev
+ 
+ 	child->dev.of_node = np;
+ 
++	/*
++	 * We want the dma-ranges etc to be copied from the parent VCHIQ device
++	 * to be passed on to the children without a node of their own.
++	 */
++	if (!np)
++		np = pdev->dev.of_node;
++
+ 	of_dma_configure(&child->dev, np, true);
+ 
++	if (np != pdev->dev.of_node)
++		of_node_put(np);
++
+ 	return child;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0474-staging-vchiq_arm-Usa-a-DMA-pool-for-small-bulks.patch b/target/linux/bcm27xx/patches-5.15/950-0474-staging-vchiq_arm-Usa-a-DMA-pool-for-small-bulks.patch
new file mode 100644
index 0000000000..36ab558bf1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0474-staging-vchiq_arm-Usa-a-DMA-pool-for-small-bulks.patch
@@ -0,0 +1,121 @@
+From 3092242447d1132bf1e0d13efbc133c50224b1a7 Mon Sep 17 00:00:00 2001
+From: detule <ogjoneski@gmail.com>
+Date: Tue, 2 Oct 2018 04:10:08 -0400
+Subject: [PATCH] staging: vchiq_arm: Usa a DMA pool for small bulks
+
+During a bulk transfer we request a DMA allocation to hold the
+scatter-gather list.  Most of the time, this allocation is small
+(<< PAGE_SIZE), however it can be requested at a high enough frequency
+to cause fragmentation and/or stress the CMA allocator (think time
+spent in compaction here, or during allocations elsewhere).
+
+Implement a pool to serve up small DMA allocations, falling back
+to a coherent allocation if the request is greater than
+VCHIQ_DMA_POOL_SIZE.
+
+Signed-off-by: Oliver Gjoneski <ogjoneski@gmail.com>
+---
+ .../interface/vchiq_arm/vchiq_arm.c           | 36 ++++++++++++++++---
+ 1 file changed, 32 insertions(+), 4 deletions(-)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -22,6 +22,7 @@
+ #include <linux/platform_device.h>
+ #include <linux/compat.h>
+ #include <linux/dma-mapping.h>
++#include <linux/dmapool.h>
+ #include <linux/rcupdate.h>
+ #include <linux/delay.h>
+ #include <linux/slab.h>
+@@ -51,6 +52,8 @@
+ 
+ #define ARM_DS_ACTIVE	BIT(2)
+ 
++#define VCHIQ_DMA_POOL_SIZE PAGE_SIZE
++
+ /* Override the default prefix, which would be vchiq_arm (from the filename) */
+ #undef MODULE_PARAM_PREFIX
+ #define MODULE_PARAM_PREFIX DEVICE_NAME "."
+@@ -93,6 +96,7 @@ struct vchiq_pagelist_info {
+ 	struct pagelist *pagelist;
+ 	size_t pagelist_buffer_size;
+ 	dma_addr_t dma_addr;
++	bool is_from_pool;
+ 	enum dma_data_direction dma_dir;
+ 	unsigned int num_pages;
+ 	unsigned int pages_need_release;
+@@ -113,6 +117,7 @@ static void __iomem *g_regs;
+  * of 32.
+  */
+ static unsigned int g_cache_line_size = 32;
++static struct dma_pool *g_dma_pool;
+ static unsigned int g_use_36bit_addrs = 0;
+ static unsigned int g_fragments_size;
+ static char *g_fragments_base;
+@@ -156,8 +161,14 @@ cleanup_pagelistinfo(struct vchiq_pageli
+ 	if (pagelistinfo->pages_need_release)
+ 		unpin_user_pages(pagelistinfo->pages, pagelistinfo->num_pages);
+ 
+-	dma_free_coherent(g_dev, pagelistinfo->pagelist_buffer_size,
+-			  pagelistinfo->pagelist, pagelistinfo->dma_addr);
++	if (pagelistinfo->is_from_pool) {
++		dma_pool_free(g_dma_pool, pagelistinfo->pagelist,
++			      pagelistinfo->dma_addr);
++	} else {
++		dma_free_coherent(g_dev, pagelistinfo->pagelist_buffer_size,
++				  pagelistinfo->pagelist,
++				  pagelistinfo->dma_addr);
++	}
+ }
+ 
+ /* There is a potential problem with partial cache lines (pages?)
+@@ -178,6 +189,7 @@ create_pagelist(char *buf, char __user *
+ 	u32 *addrs;
+ 	unsigned int num_pages, offset, i, k;
+ 	int actual_pages;
++	bool is_from_pool;
+ 	size_t pagelist_size;
+ 	struct scatterlist *scatterlist, *sg;
+ 	int dma_buffers;
+@@ -207,8 +219,16 @@ create_pagelist(char *buf, char __user *
+ 	/* Allocate enough storage to hold the page pointers and the page
+ 	 * list
+ 	 */
+-	pagelist = dma_alloc_coherent(g_dev, pagelist_size, &dma_addr,
+-				      GFP_KERNEL);
++	if (pagelist_size > VCHIQ_DMA_POOL_SIZE) {
++		pagelist = dma_alloc_coherent(g_dev,
++					       pagelist_size,
++					       &dma_addr,
++					       GFP_KERNEL);
++		is_from_pool = false;
++	} else {
++		pagelist = dma_pool_alloc(g_dma_pool, GFP_KERNEL, &dma_addr);
++		is_from_pool = true;
++	}
+ 
+ 	vchiq_log_trace(vchiq_arm_log_level, "%s - %pK", __func__, pagelist);
+ 
+@@ -229,6 +249,7 @@ create_pagelist(char *buf, char __user *
+ 	pagelistinfo->pagelist = pagelist;
+ 	pagelistinfo->pagelist_buffer_size = pagelist_size;
+ 	pagelistinfo->dma_addr = dma_addr;
++	pagelistinfo->is_from_pool = is_from_pool;
+ 	pagelistinfo->dma_dir =  (type == PAGELIST_WRITE) ?
+ 				  DMA_TO_DEVICE : DMA_FROM_DEVICE;
+ 	pagelistinfo->num_pages = num_pages;
+@@ -569,6 +590,13 @@ int vchiq_platform_init(struct platform_
+ 
+ 	g_dev = dev;
+ 	g_dma_dev = dma_dev ?: dev;
++	g_dma_pool = dmam_pool_create("vchiq_scatter_pool", dev,
++				      VCHIQ_DMA_POOL_SIZE, g_cache_line_size,
++				      0);
++	if (!g_dma_pool) {
++		dev_err(dev, "failed to create dma pool");
++		return -ENOMEM;
++	}
+ 
+ 	vchiq_log_info(vchiq_arm_log_level,
+ 		"vchiq_init - done (slots %pK, phys %pad)",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch b/target/linux/bcm27xx/patches-5.15/950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch
new file mode 100644
index 0000000000..64f4e9bd5b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch
@@ -0,0 +1,69 @@
+From 671b5b9af51bd5296d4fe76155b3ba75c99000b9 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 13 Sep 2021 17:30:18 +0100
+Subject: [PATCH] drm/vc4: Reset HDMI MISC_CONTROL register.
+
+The HDMI block can repeat pixels for double clocked modes,
+and the firmware is now configuring the block to do this as
+the PV is doing it incorrectly when at 2pixels/clock.
+If the kernel doesn't reset it then we end up with strange
+modes.
+
+Reset MISC_CONTROL.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c      | 8 ++++++++
+ drivers/gpu/drm/vc4/vc4_hdmi_regs.h | 3 +++
+ 2 files changed, 11 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -78,6 +78,9 @@
+ #define VC5_HDMI_VERTB_VSPO_SHIFT		16
+ #define VC5_HDMI_VERTB_VSPO_MASK		VC4_MASK(29, 16)
+ 
++#define VC5_HDMI_MISC_CONTROL_PIXEL_REP_SHIFT	0
++#define VC5_HDMI_MISC_CONTROL_PIXEL_REP_MASK	VC4_MASK(3, 0)
++
+ #define VC5_HDMI_SCRAMBLER_CTL_ENABLE		BIT(0)
+ 
+ #define VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE_SHIFT	8
+@@ -962,6 +965,11 @@ static void vc5_hdmi_set_timings(struct
+ 	reg |= gcp_en ? VC5_HDMI_GCP_CONFIG_GCP_ENABLE : 0;
+ 	HDMI_WRITE(HDMI_GCP_CONFIG, reg);
+ 
++	reg = HDMI_READ(HDMI_MISC_CONTROL);
++	reg &= ~VC5_HDMI_MISC_CONTROL_PIXEL_REP_MASK;
++	reg |= VC4_SET_FIELD(0, VC5_HDMI_MISC_CONTROL_PIXEL_REP);
++	HDMI_WRITE(HDMI_MISC_CONTROL, reg);
++
+ 	HDMI_WRITE(HDMI_CLOCK_STOP, 0);
+ 
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
+@@ -125,6 +125,7 @@ enum vc4_hdmi_field {
+ 	HDMI_VERTB0,
+ 	HDMI_VERTB1,
+ 	HDMI_VID_CTL,
++	HDMI_MISC_CONTROL,
+ };
+ 
+ struct vc4_hdmi_register {
+@@ -235,6 +236,7 @@ static const struct vc4_hdmi_register __
+ 	VC4_HDMI_REG(HDMI_VERTB0, 0x0f0),
+ 	VC4_HDMI_REG(HDMI_VERTA1, 0x0f4),
+ 	VC4_HDMI_REG(HDMI_VERTB1, 0x0f8),
++	VC4_HDMI_REG(HDMI_MISC_CONTROL, 0x100),
+ 	VC4_HDMI_REG(HDMI_MAI_CHANNEL_MAP, 0x09c),
+ 	VC4_HDMI_REG(HDMI_MAI_CONFIG, 0x0a0),
+ 	VC4_HDMI_REG(HDMI_DEEP_COLOR_CONFIG_1, 0x170),
+@@ -315,6 +317,7 @@ static const struct vc4_hdmi_register __
+ 	VC4_HDMI_REG(HDMI_VERTB0, 0x0f0),
+ 	VC4_HDMI_REG(HDMI_VERTA1, 0x0f4),
+ 	VC4_HDMI_REG(HDMI_VERTB1, 0x0f8),
++	VC4_HDMI_REG(HDMI_MISC_CONTROL, 0x100),
+ 	VC4_HDMI_REG(HDMI_MAI_CHANNEL_MAP, 0x09c),
+ 	VC4_HDMI_REG(HDMI_MAI_CONFIG, 0x0a0),
+ 	VC4_HDMI_REG(HDMI_DEEP_COLOR_CONFIG_1, 0x170),
diff --git a/target/linux/bcm27xx/patches-5.15/950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch b/target/linux/bcm27xx/patches-5.15/950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch
new file mode 100644
index 0000000000..457d3d0974
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch
@@ -0,0 +1,145 @@
+From 51f5523151d8de2b1476482e575bb5989e55ba16 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 6 Jul 2021 18:53:28 +0100
+Subject: [PATCH] drm/vc4: Release workaround buffer and DMA in error
+ paths and unbind
+
+On Pi0-3 the driver allocates a buffer and requests a DMA channel
+because the ARM can't write to DSI1's registers directly.
+However unbind and the error paths in bind don't release the buffer or
+the DMA channel.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 51 ++++++++++++++++++++++++++---------
+ 1 file changed, 39 insertions(+), 12 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -1612,7 +1612,7 @@ static int vc4_dsi_bind(struct device *d
+ 			if (ret != -EPROBE_DEFER)
+ 				DRM_ERROR("Failed to get DMA channel: %d\n",
+ 					  ret);
+-			return ret;
++			goto err_free_dma_mem;
+ 		}
+ 
+ 		/* Get the physical address of the device's registers.  The
+@@ -1641,7 +1641,7 @@ static int vc4_dsi_bind(struct device *d
+ 	if (ret) {
+ 		if (ret != -EPROBE_DEFER)
+ 			dev_err(dev, "Failed to get interrupt: %d\n", ret);
+-		return ret;
++		goto err_free_dma;
+ 	}
+ 
+ 	dsi->escape_clock = devm_clk_get(dev, "escape");
+@@ -1649,7 +1649,7 @@ static int vc4_dsi_bind(struct device *d
+ 		ret = PTR_ERR(dsi->escape_clock);
+ 		if (ret != -EPROBE_DEFER)
+ 			dev_err(dev, "Failed to get escape clock: %d\n", ret);
+-		return ret;
++		goto err_free_dma;
+ 	}
+ 
+ 	dsi->pll_phy_clock = devm_clk_get(dev, "phy");
+@@ -1657,7 +1657,7 @@ static int vc4_dsi_bind(struct device *d
+ 		ret = PTR_ERR(dsi->pll_phy_clock);
+ 		if (ret != -EPROBE_DEFER)
+ 			dev_err(dev, "Failed to get phy clock: %d\n", ret);
+-		return ret;
++		goto err_free_dma;
+ 	}
+ 
+ 	dsi->pixel_clock = devm_clk_get(dev, "pixel");
+@@ -1665,7 +1665,7 @@ static int vc4_dsi_bind(struct device *d
+ 		ret = PTR_ERR(dsi->pixel_clock);
+ 		if (ret != -EPROBE_DEFER)
+ 			dev_err(dev, "Failed to get pixel clock: %d\n", ret);
+-		return ret;
++		goto err_free_dma;
+ 	}
+ 
+ 	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
+@@ -1680,33 +1680,37 @@ static int vc4_dsi_bind(struct device *d
+ 		if (ret == -ENODEV)
+ 			return 0;
+ 
+-		return ret;
++		goto err_free_dma;
+ 	}
+ 
+ 	if (panel) {
+ 		dsi->bridge = devm_drm_panel_bridge_add_typed(dev, panel,
+ 							      DRM_MODE_CONNECTOR_DSI);
+-		if (IS_ERR(dsi->bridge))
+-			return PTR_ERR(dsi->bridge);
++		if (IS_ERR(dsi->bridge)) {
++			ret = PTR_ERR(dsi->bridge);
++			goto err_free_dma;
++		}
+ 	}
+ 
+ 	/* The esc clock rate is supposed to always be 100Mhz. */
+ 	ret = clk_set_rate(dsi->escape_clock, 100 * 1000000);
+ 	if (ret) {
+ 		dev_err(dev, "Failed to set esc clock: %d\n", ret);
+-		return ret;
++		goto err_free_dma;
+ 	}
+ 
+ 	ret = vc4_dsi_init_phy_clocks(dsi);
+ 	if (ret)
+-		return ret;
++		goto err_free_dma;
+ 
+ 	drm_simple_encoder_init(drm, dsi->encoder, DRM_MODE_ENCODER_DSI);
+ 	drm_encoder_helper_add(dsi->encoder, &vc4_dsi_encoder_helper_funcs);
+ 
+ 	ret = drm_bridge_attach(dsi->encoder, dsi->bridge, NULL, 0);
+-	if (ret)
+-		return ret;
++	if (ret) {
++		dev_err(dev, "bridge attach failed: %d\n", ret);
++		goto err_free_dma;
++	}
+ 	/* Disable the atomic helper calls into the bridge.  We
+ 	 * manually call the bridge pre_enable / enable / etc. calls
+ 	 * from our driver, since we need to sequence them within the
+@@ -1719,6 +1723,19 @@ static int vc4_dsi_bind(struct device *d
+ 	pm_runtime_enable(dev);
+ 
+ 	return 0;
++
++err_free_dma:
++	if (dsi->reg_dma_chan) {
++		dma_release_channel(dsi->reg_dma_chan);
++		dsi->reg_dma_chan = NULL;
++	}
++err_free_dma_mem:
++	if (dsi->reg_dma_mem) {
++		dma_free_coherent(dev, 4, dsi->reg_dma_mem, dsi->reg_dma_paddr);
++		dsi->reg_dma_mem = NULL;
++	}
++
++	return ret;
+ }
+ 
+ static void vc4_dsi_unbind(struct device *dev, struct device *master,
+@@ -1735,6 +1752,16 @@ static void vc4_dsi_unbind(struct device
+ 	 */
+ 	list_splice_init(&dsi->bridge_chain, &dsi->encoder->bridge_chain);
+ 	drm_encoder_cleanup(dsi->encoder);
++
++	if (dsi->reg_dma_chan) {
++		dma_release_channel(dsi->reg_dma_chan);
++		dsi->reg_dma_chan = NULL;
++	}
++
++	if (dsi->reg_dma_mem) {
++		dma_free_coherent(dev, 4, dsi->reg_dma_mem, dsi->reg_dma_paddr);
++		dsi->reg_dma_mem = NULL;
++	}
+ }
+ 
+ static const struct component_ops vc4_dsi_ops = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0477-drm-vc4-Correct-DSI-divider-calculations.patch b/target/linux/bcm27xx/patches-5.15/950-0477-drm-vc4-Correct-DSI-divider-calculations.patch
new file mode 100644
index 0000000000..af258f20d1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0477-drm-vc4-Correct-DSI-divider-calculations.patch
@@ -0,0 +1,35 @@
+From 06c340cc854b1c8c275968c2830fbe8a5c3b0e4e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 18 Jun 2021 21:52:28 +0100
+Subject: [PATCH] drm/vc4: Correct DSI divider calculations
+
+The divider calculations tried to find the divider
+just faster than the clock requested. However if
+it required a divider of 7 then the for loop
+aborted without handling the "error" case, and could
+end up with a clock lower than requested.
+
+Correct the loop so that we always have a clock greater
+than requested.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -850,11 +850,9 @@ static bool vc4_dsi_encoder_mode_fixup(s
+ 	/* Find what divider gets us a faster clock than the requested
+ 	 * pixel clock.
+ 	 */
+-	for (divider = 1; divider < 8; divider++) {
+-		if (parent_rate / divider < pll_clock) {
+-			divider--;
++	for (divider = 1; divider < 7; divider++) {
++		if (parent_rate / (divider + 1) < pll_clock)
+ 			break;
+-		}
+ 	}
+ 
+ 	/* Now that we've picked a PLL divider, calculate back to its
diff --git a/target/linux/bcm27xx/patches-5.15/950-0478-drm-panel-raspberrypi-touchscreen-Handle-I2C-errors.patch b/target/linux/bcm27xx/patches-5.15/950-0478-drm-panel-raspberrypi-touchscreen-Handle-I2C-errors.patch
new file mode 100644
index 0000000000..750d3f6be2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0478-drm-panel-raspberrypi-touchscreen-Handle-I2C-errors.patch
@@ -0,0 +1,34 @@
+From a8bb5f5ddbef4ac5b0e256c7c3bde4ac5636f429 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 8 Sep 2021 14:21:38 +0100
+Subject: [PATCH] drm/panel/raspberrypi-touchscreen: Handle I2C errors.
+
+rpi_touchscreen_i2c_read returns any errors from i2c_transfer,
+or the 8 bit received value.
+Check for error values before trying to process the data as
+valid.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
++++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+@@ -296,13 +296,14 @@ static int rpi_touchscreen_noop(struct d
+ static int rpi_touchscreen_prepare(struct drm_panel *panel)
+ {
+ 	struct rpi_touchscreen *ts = panel_to_ts(panel);
+-	int i;
++	int i, data;
+ 
+ 	rpi_touchscreen_i2c_write(ts, REG_POWERON, 1);
+ 	usleep_range(20000, 25000);
+ 	/* Wait for nPWRDWN to go low to indicate poweron is done. */
+ 	for (i = 0; i < 100; i++) {
+-		if (rpi_touchscreen_i2c_read(ts, REG_PORTB) & 1)
++		data = rpi_touchscreen_i2c_read(ts, REG_PORTB);
++		if (data >= 0 && (data & 1))
+ 			break;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0479-drm-panel-simple-Add-a-timing-for-the-Raspberry-Pi-7.patch b/target/linux/bcm27xx/patches-5.15/950-0479-drm-panel-simple-Add-a-timing-for-the-Raspberry-Pi-7.patch
new file mode 100644
index 0000000000..95e48816e2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0479-drm-panel-simple-Add-a-timing-for-the-Raspberry-Pi-7.patch
@@ -0,0 +1,59 @@
+From 02ce5b14d69bf513f3c6cc93c005cae07db985a0 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 26 Mar 2021 17:06:36 +0000
+Subject: [PATCH] drm/panel-simple: Add a timing for the Raspberry Pi
+ 7" panel
+
+The Raspberry Pi 7" 800x480 panel uses a Toshiba TC358762 DSI
+to DPI bridge chip, so there is a requirement for the timings
+to be specified for the end panel. Add such a definition.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-simple.c | 28 ++++++++++++++++++++++++++++
+ 1 file changed, 28 insertions(+)
+
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -3758,6 +3758,31 @@ static const struct panel_desc qishenglo
+ 	.connector_type = DRM_MODE_CONNECTOR_DPI,
+ };
+ 
++static const struct drm_display_mode raspberrypi_7inch_mode = {
++	.clock = 25979400 / 1000,
++	.hdisplay = 800,
++	.hsync_start = 800 + 2,
++	.hsync_end = 800 + 2 + 2,
++	.htotal = 800 + 2 + 2 + 46,
++	.vdisplay = 480,
++	.vsync_start = 480 + 7,
++	.vsync_end = 480 + 7 + 2,
++	.vtotal = 480 + 7 + 2 + 21,
++	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
++};
++
++static const struct panel_desc raspberrypi_7inch = {
++	.modes = &raspberrypi_7inch_mode,
++	.num_modes = 1,
++	.bpc = 8,
++	.size = {
++		.width = 154,
++		.height = 86,
++	},
++	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
++	.connector_type = DRM_MODE_CONNECTOR_DSI,
++};
++
+ static const struct display_timing rocktech_rk070er9427_timing = {
+ 	.pixelclock = { 26400000, 33300000, 46800000 },
+ 	.hactive = { 800, 800, 800 },
+@@ -4838,6 +4863,9 @@ static const struct of_device_id platfor
+ 		.compatible = "qishenglong,gopher2b-lcd",
+ 		.data = &qishenglong_gopher2b_lcd,
+ 	}, {
++		.compatible = "raspberrypi,7inch-dsi",
++		.data = &raspberrypi_7inch,
++	}, {
+ 		.compatible = "rocktech,rk070er9427",
+ 		.data = &rocktech_rk070er9427,
+ 	}, {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0480-Input-edt-ft54x6-Clean-up-timer-and-workqueue-on-rem.patch b/target/linux/bcm27xx/patches-5.15/950-0480-Input-edt-ft54x6-Clean-up-timer-and-workqueue-on-rem.patch
new file mode 100644
index 0000000000..0648764965
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0480-Input-edt-ft54x6-Clean-up-timer-and-workqueue-on-rem.patch
@@ -0,0 +1,31 @@
+From 55314e9ff8225d0c110e6598d2837baac17a30cd Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 8 Sep 2021 14:46:17 +0100
+Subject: [PATCH] Input: edt-ft54x6: Clean up timer and workqueue on
+ remove
+
+If no interrupt is defined then a timer and workqueue are used
+to poll the controller.
+On remove these were not being cleaned up correctly.
+
+Fixes: ca61fdaba79f "Input: edt-ft5x06: Poll the device if no interrupt is
+configured."
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/input/touchscreen/edt-ft5x06.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/input/touchscreen/edt-ft5x06.c
++++ b/drivers/input/touchscreen/edt-ft5x06.c
+@@ -1301,6 +1301,10 @@ static int edt_ft5x06_ts_remove(struct i
+ {
+ 	struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
+ 
++	if (!client->irq) {
++		del_timer(&tsdata->timer);
++		cancel_work_sync(&tsdata->work_i2c_poll);
++	}
+ 	edt_ft5x06_ts_teardown_debugfs(tsdata);
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0481-regulator-rpi-panel-Register-with-a-unique-backlight.patch b/target/linux/bcm27xx/patches-5.15/950-0481-regulator-rpi-panel-Register-with-a-unique-backlight.patch
new file mode 100644
index 0000000000..a0e745bc36
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0481-regulator-rpi-panel-Register-with-a-unique-backlight.patch
@@ -0,0 +1,29 @@
+From 2d0958a56e6b0da1510ed86f4fb7409b43fedb4d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 11 Feb 2021 18:46:06 +0000
+Subject: [PATCH] regulator: rpi-panel: Register with a unique
+ backlight name
+
+There's no reason why 2 Raspberry Pi DSI displays can't be
+attached to a Pi Compute Module, so the backlight names need to
+be unique.
+
+Use the parent dev_name. It's not as readable, but is unique.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/regulator/rpi-panel-attiny-regulator.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -217,8 +217,7 @@ static int attiny_i2c_probe(struct i2c_c
+ 
+ 	props.type = BACKLIGHT_RAW;
+ 	props.max_brightness = 0xff;
+-	bl = devm_backlight_device_register(&i2c->dev,
+-					    "7inch-touchscreen-panel-bl",
++	bl = devm_backlight_device_register(&i2c->dev, dev_name(&i2c->dev),
+ 					    &i2c->dev, regmap, &attiny_bl,
+ 					    &props);
+ 	if (IS_ERR(bl))
diff --git a/target/linux/bcm27xx/patches-5.15/950-0482-regulator-rpi-panel-Serialise-operations.patch b/target/linux/bcm27xx/patches-5.15/950-0482-regulator-rpi-panel-Serialise-operations.patch
new file mode 100644
index 0000000000..67543ea197
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0482-regulator-rpi-panel-Serialise-operations.patch
@@ -0,0 +1,255 @@
+From 354dfe9793ff5f814830c6841ca07ef04bfd66e9 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 8 Sep 2021 15:02:05 +0100
+Subject: [PATCH] regulator: rpi-panel: Serialise operations.
+
+The driver was using the regmap lock to serialise the
+individual accesses, but we really need to protect the
+timings of enabling the regulators, including any communication
+with the Atmel.
+
+Use a mutex within the driver to control overall accesses to
+the Atmel, instead of the regmap lock.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../regulator/rpi-panel-attiny-regulator.c    | 91 ++++++++++++++++---
+ 1 file changed, 80 insertions(+), 11 deletions(-)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -27,18 +27,28 @@
+ #define REG_POWERON	0x85
+ #define REG_PWM		0x86
+ 
++struct attiny_lcd {
++	/* lock to serialise overall accesses to the Atmel */
++	struct mutex	lock;
++	struct regmap	*regmap;
++};
++
+ static const struct regmap_config attiny_regmap_config = {
+ 	.reg_bits = 8,
+ 	.val_bits = 8,
++	.disable_locking = 1,
+ 	.max_register = REG_PWM,
+ 	.cache_type = REGCACHE_NONE,
+ };
+ 
+ static int attiny_lcd_power_enable(struct regulator_dev *rdev)
+ {
++	struct mutex *lock = rdev_get_drvdata(rdev);
+ 	unsigned int data;
+ 	int ret, i;
+ 
++	mutex_lock(lock);
++
+ 	regmap_write(rdev->regmap, REG_POWERON, 1);
+ 	msleep(80);
+ 
+@@ -63,33 +73,49 @@ static int attiny_lcd_power_enable(struc
+ 	 */
+ 	regmap_write(rdev->regmap, REG_PORTA, BIT(2));
+ 
++	mutex_unlock(lock);
++
+ 	return 0;
+ }
+ 
+ static int attiny_lcd_power_disable(struct regulator_dev *rdev)
+ {
++	struct mutex *lock = rdev_get_drvdata(rdev);
++
++	mutex_lock(lock);
++
+ 	regmap_write(rdev->regmap, REG_PWM, 0);
+ 	regmap_write(rdev->regmap, REG_POWERON, 0);
+ 	msleep(30);
++
++	mutex_unlock(lock);
++
+ 	return 0;
+ }
+ 
+ static int attiny_lcd_power_is_enabled(struct regulator_dev *rdev)
+ {
++	struct mutex *lock = rdev_get_drvdata(rdev);
+ 	unsigned int data;
+ 	int ret, i;
+ 
++	mutex_lock(lock);
++
+ 	for (i = 0; i < 10; i++) {
+ 		ret = regmap_read(rdev->regmap, REG_POWERON, &data);
+ 		if (!ret)
+ 			break;
+ 		usleep_range(10000, 12000);
+ 	}
+-	if (ret < 0)
++	if (ret < 0) {
++		mutex_unlock(lock);
+ 		return ret;
++	}
+ 
+-	if (!(data & BIT(0)))
++	if (!(data & BIT(0))) {
++		mutex_unlock(lock);
+ 		return 0;
++	}
+ 
+ 	for (i = 0; i < 10; i++) {
+ 		ret = regmap_read(rdev->regmap, REG_PORTB, &data);
+@@ -98,6 +124,8 @@ static int attiny_lcd_power_is_enabled(s
+ 		usleep_range(10000, 12000);
+ 	}
+ 
++	mutex_unlock(lock);
++
+ 	if (ret < 0)
+ 		return ret;
+ 
+@@ -125,10 +153,13 @@ static const struct regulator_desc attin
+ 
+ static int attiny_update_status(struct backlight_device *bl)
+ {
+-	struct regmap *regmap = bl_get_data(bl);
++	struct attiny_lcd *state = bl_get_data(bl);
++	struct regmap *regmap = state->regmap;
+ 	int brightness = bl->props.brightness;
+ 	int ret, i;
+ 
++	mutex_lock(&state->lock);
++
+ 	if (bl->props.power != FB_BLANK_UNBLANK ||
+ 	    bl->props.fb_blank != FB_BLANK_UNBLANK)
+ 		brightness = 0;
+@@ -139,20 +170,27 @@ static int attiny_update_status(struct b
+ 			break;
+ 	}
+ 
++	mutex_unlock(&state->lock);
++
+ 	return ret;
+ }
+ 
+ static int attiny_get_brightness(struct backlight_device *bl)
+ {
+-	struct regmap *regmap = bl_get_data(bl);
++	struct attiny_lcd *state = bl_get_data(bl);
++	struct regmap *regmap = state->regmap;
+ 	int ret, brightness, i;
+ 
++	mutex_lock(&state->lock);
++
+ 	for (i = 0; i < 10; i++) {
+ 		ret = regmap_read(regmap, REG_PWM, &brightness);
+ 		if (!ret)
+ 			break;
+ 	}
+ 
++	mutex_unlock(&state->lock);
++
+ 	if (ret)
+ 		return ret;
+ 
+@@ -174,22 +212,30 @@ static int attiny_i2c_probe(struct i2c_c
+ 	struct regulator_config config = { };
+ 	struct backlight_device *bl;
+ 	struct regulator_dev *rdev;
++	struct attiny_lcd *state;
+ 	struct regmap *regmap;
+ 	unsigned int data;
+ 	int ret;
+ 
++	state = devm_kzalloc(&i2c->dev, sizeof(*state), GFP_KERNEL);
++	if (!state)
++		return -ENOMEM;
++
++	mutex_init(&state->lock);
++	i2c_set_clientdata(i2c, state);
++
+ 	regmap = devm_regmap_init_i2c(i2c, &attiny_regmap_config);
+ 	if (IS_ERR(regmap)) {
+ 		ret = PTR_ERR(regmap);
+ 		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
+ 			ret);
+-		return ret;
++		goto error;
+ 	}
+ 
+ 	ret = regmap_read(regmap, REG_ID, &data);
+ 	if (ret < 0) {
+ 		dev_err(&i2c->dev, "Failed to read REG_ID reg: %d\n", ret);
+-		return ret;
++		goto error;
+ 	}
+ 
+ 	switch (data) {
+@@ -198,7 +244,8 @@ static int attiny_i2c_probe(struct i2c_c
+ 		break;
+ 	default:
+ 		dev_err(&i2c->dev, "Unknown Atmel firmware revision: 0x%02x\n", data);
+-		return -ENODEV;
++		ret = -ENODEV;
++		goto error;
+ 	}
+ 
+ 	regmap_write(regmap, REG_POWERON, 0);
+@@ -208,24 +255,45 @@ static int attiny_i2c_probe(struct i2c_c
+ 	config.regmap = regmap;
+ 	config.of_node = i2c->dev.of_node;
+ 	config.init_data = &attiny_regulator_default;
++	config.driver_data = &state->lock;
+ 
+ 	rdev = devm_regulator_register(&i2c->dev, &attiny_regulator, &config);
+ 	if (IS_ERR(rdev)) {
+ 		dev_err(&i2c->dev, "Failed to register ATTINY regulator\n");
+-		return PTR_ERR(rdev);
++		ret = PTR_ERR(rdev);
++		goto error;
+ 	}
+ 
+ 	props.type = BACKLIGHT_RAW;
+ 	props.max_brightness = 0xff;
++
++	state->regmap = regmap;
++
+ 	bl = devm_backlight_device_register(&i2c->dev, dev_name(&i2c->dev),
+-					    &i2c->dev, regmap, &attiny_bl,
++					    &i2c->dev, state, &attiny_bl,
+ 					    &props);
+-	if (IS_ERR(bl))
+-		return PTR_ERR(bl);
++	if (IS_ERR(bl)) {
++		ret = PTR_ERR(bl);
++		goto error;
++	}
+ 
+ 	bl->props.brightness = 0xff;
+ 
+ 	return 0;
++
++error:
++	mutex_destroy(&state->lock);
++
++	return ret;
++}
++
++static int attiny_i2c_remove(struct i2c_client *client)
++{
++	struct attiny_lcd *state = i2c_get_clientdata(client);
++
++	mutex_destroy(&state->lock);
++
++	return 0;
+ }
+ 
+ static const struct of_device_id attiny_dt_ids[] = {
+@@ -240,6 +308,7 @@ static struct i2c_driver attiny_regulato
+ 		.of_match_table = of_match_ptr(attiny_dt_ids),
+ 	},
+ 	.probe = attiny_i2c_probe,
++	.remove	= attiny_i2c_remove,
+ };
+ 
+ module_i2c_driver(attiny_regulator_driver);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0483-regulator-rpi-panel-Ensure-the-backlight-is-off-duri.patch b/target/linux/bcm27xx/patches-5.15/950-0483-regulator-rpi-panel-Ensure-the-backlight-is-off-duri.patch
new file mode 100644
index 0000000000..7932189de1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0483-regulator-rpi-panel-Ensure-the-backlight-is-off-duri.patch
@@ -0,0 +1,24 @@
+From 56a0f05720575f229fbbd996c0798aaf23464924 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 8 Sep 2021 15:41:18 +0100
+Subject: [PATCH] regulator: rpi-panel: Ensure the backlight is off
+ during probe.
+
+The initial state of the Atmel is not defined, so ensure the
+backlight PWM is set to 0 by default.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/regulator/rpi-panel-attiny-regulator.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -250,6 +250,7 @@ static int attiny_i2c_probe(struct i2c_c
+ 
+ 	regmap_write(regmap, REG_POWERON, 0);
+ 	msleep(30);
++	regmap_write(regmap, REG_PWM, 0);
+ 
+ 	config.dev = &i2c->dev;
+ 	config.regmap = regmap;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0484-regulator-rpi-panel-Convert-to-drive-lines-directly.patch b/target/linux/bcm27xx/patches-5.15/950-0484-regulator-rpi-panel-Convert-to-drive-lines-directly.patch
new file mode 100644
index 0000000000..04ac578238
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0484-regulator-rpi-panel-Convert-to-drive-lines-directly.patch
@@ -0,0 +1,199 @@
+From 3cf717e1b077749001602a141dcdc2151e8307e1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 9 Sep 2021 18:24:57 +0100
+Subject: [PATCH] regulator: rpi-panel: Convert to drive lines directly
+
+The Atmel was doing a load of automatic sequencing of
+control lines, however it was combining the touch controller's
+reset with the bridge/panel control.
+
+Change to control the control signals directly rather than
+through the automatic POWERON control.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../regulator/rpi-panel-attiny-regulator.c    | 111 ++++++++++--------
+ 1 file changed, 60 insertions(+), 51 deletions(-)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -21,11 +21,28 @@
+ /* I2C registers of the Atmel microcontroller. */
+ #define REG_ID		0x80
+ #define REG_PORTA	0x81
+-#define REG_PORTA_HF	BIT(2)
+-#define REG_PORTA_VF	BIT(3)
+ #define REG_PORTB	0x82
++#define REG_PORTC	0x83
+ #define REG_POWERON	0x85
+ #define REG_PWM		0x86
++#define REG_ADDR_L	0x8c
++#define REG_ADDR_H	0x8d
++#define REG_WRITE_DATA_H	0x90
++#define REG_WRITE_DATA_L	0x91
++
++#define PA_LCD_DITHB		BIT(0)
++#define PA_LCD_MODE		BIT(1)
++#define PA_LCD_LR		BIT(2)
++#define PA_LCD_UD		BIT(3)
++
++#define PB_BRIDGE_PWRDNX_N	BIT(0)
++#define PB_LCD_VCC_N		BIT(1)
++#define PB_LCD_MAIN		BIT(7)
++
++#define PC_LED_EN		BIT(0)
++#define PC_RST_TP_N		BIT(1)
++#define PC_RST_LCD_N		BIT(2)
++#define PC_RST_BRIDGE_N		BIT(3)
+ 
+ struct attiny_lcd {
+ 	/* lock to serialise overall accesses to the Atmel */
+@@ -37,99 +54,91 @@ static const struct regmap_config attiny
+ 	.reg_bits = 8,
+ 	.val_bits = 8,
+ 	.disable_locking = 1,
+-	.max_register = REG_PWM,
++	.max_register = REG_WRITE_DATA_L,
+ 	.cache_type = REGCACHE_NONE,
+ };
+ 
+ static int attiny_lcd_power_enable(struct regulator_dev *rdev)
+ {
+-	struct mutex *lock = rdev_get_drvdata(rdev);
+-	unsigned int data;
+-	int ret, i;
++	struct attiny_lcd *state = rdev_get_drvdata(rdev);
+ 
+-	mutex_lock(lock);
+-
+-	regmap_write(rdev->regmap, REG_POWERON, 1);
+-	msleep(80);
++	mutex_lock(&state->lock);
+ 
+-	/* Wait for nPWRDWN to go low to indicate poweron is done. */
+-	for (i = 0; i < 20; i++) {
+-		ret = regmap_read(rdev->regmap, REG_PORTB, &data);
+-		if (!ret) {
+-			if (data & BIT(0))
+-				break;
+-		}
+-		usleep_range(10000, 12000);
+-	}
+-	usleep_range(10000, 12000);
+-
+-	if (ret)
+-		pr_err("%s: regmap_read_poll_timeout failed %d\n", __func__, ret);
++	/* Ensure bridge, and tp stay in reset */
++	regmap_write(rdev->regmap, REG_PORTC, 0);
++	usleep_range(5000, 10000);
+ 
+ 	/* Default to the same orientation as the closed source
+ 	 * firmware used for the panel.  Runtime rotation
+ 	 * configuration will be supported using VC4's plane
+ 	 * orientation bits.
+ 	 */
+-	regmap_write(rdev->regmap, REG_PORTA, BIT(2));
++	regmap_write(rdev->regmap, REG_PORTA, PA_LCD_LR);
++	usleep_range(5000, 10000);
++	regmap_write(rdev->regmap, REG_PORTB, PB_LCD_MAIN);
++	usleep_range(5000, 10000);
++	/* Bring controllers out of reset */
++	regmap_write(rdev->regmap, REG_PORTC,
++		     PC_LED_EN | PC_RST_BRIDGE_N | PC_RST_LCD_N | PC_RST_TP_N);
++
++	msleep(80);
++
++	regmap_write(rdev->regmap, REG_ADDR_H, 0x04);
++	usleep_range(5000, 8000);
++	regmap_write(rdev->regmap, REG_ADDR_L, 0x7c);
++	usleep_range(5000, 8000);
++	regmap_write(rdev->regmap, REG_WRITE_DATA_H, 0x00);
++	usleep_range(5000, 8000);
++	regmap_write(rdev->regmap, REG_WRITE_DATA_L, 0x00);
+ 
+-	mutex_unlock(lock);
++	msleep(100);
++
++	mutex_unlock(&state->lock);
+ 
+ 	return 0;
+ }
+ 
+ static int attiny_lcd_power_disable(struct regulator_dev *rdev)
+ {
+-	struct mutex *lock = rdev_get_drvdata(rdev);
++	struct attiny_lcd *state = rdev_get_drvdata(rdev);
+ 
+-	mutex_lock(lock);
++	mutex_lock(&state->lock);
+ 
+ 	regmap_write(rdev->regmap, REG_PWM, 0);
+-	regmap_write(rdev->regmap, REG_POWERON, 0);
++	usleep_range(5000, 10000);
++	regmap_write(rdev->regmap, REG_PORTA, 0);
++	usleep_range(5000, 10000);
++	regmap_write(rdev->regmap, REG_PORTB, PB_LCD_VCC_N);
++	usleep_range(5000, 10000);
++	regmap_write(rdev->regmap, REG_PORTC, 0);
+ 	msleep(30);
+ 
+-	mutex_unlock(lock);
++	mutex_unlock(&state->lock);
+ 
+ 	return 0;
+ }
+ 
+ static int attiny_lcd_power_is_enabled(struct regulator_dev *rdev)
+ {
+-	struct mutex *lock = rdev_get_drvdata(rdev);
++	struct attiny_lcd *state = rdev_get_drvdata(rdev);
+ 	unsigned int data;
+ 	int ret, i;
+ 
+-	mutex_lock(lock);
+-
+-	for (i = 0; i < 10; i++) {
+-		ret = regmap_read(rdev->regmap, REG_POWERON, &data);
+-		if (!ret)
+-			break;
+-		usleep_range(10000, 12000);
+-	}
+-	if (ret < 0) {
+-		mutex_unlock(lock);
+-		return ret;
+-	}
+-
+-	if (!(data & BIT(0))) {
+-		mutex_unlock(lock);
+-		return 0;
+-	}
++	mutex_lock(&state->lock);
+ 
+ 	for (i = 0; i < 10; i++) {
+-		ret = regmap_read(rdev->regmap, REG_PORTB, &data);
++		ret = regmap_read(rdev->regmap, REG_PORTC, &data);
+ 		if (!ret)
+ 			break;
+ 		usleep_range(10000, 12000);
+ 	}
+ 
+-	mutex_unlock(lock);
++	mutex_unlock(&state->lock);
+ 
+ 	if (ret < 0)
+ 		return ret;
+ 
+-	return data & BIT(0);
++	return data & PC_RST_BRIDGE_N;
+ }
+ 
+ static const struct regulator_init_data attiny_regulator_default = {
+@@ -256,7 +265,7 @@ static int attiny_i2c_probe(struct i2c_c
+ 	config.regmap = regmap;
+ 	config.of_node = i2c->dev.of_node;
+ 	config.init_data = &attiny_regulator_default;
+-	config.driver_data = &state->lock;
++	config.driver_data = state;
+ 
+ 	rdev = devm_regulator_register(&i2c->dev, &attiny_regulator, &config);
+ 	if (IS_ERR(rdev)) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0485-regulator-rpi-panel-Add-GPIO-control-for-panel-and-t.patch b/target/linux/bcm27xx/patches-5.15/950-0485-regulator-rpi-panel-Add-GPIO-control-for-panel-and-t.patch
new file mode 100644
index 0000000000..5da00c14d9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0485-regulator-rpi-panel-Add-GPIO-control-for-panel-and-t.patch
@@ -0,0 +1,202 @@
+From 6486bb50b96f359844b9c34f0978c69bbdcda140 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 10 Sep 2021 13:50:28 +0100
+Subject: [PATCH] regulator: rpi-panel: Add GPIO control for panel and
+ touch resets
+
+We need independent control of the resets for the panel&bridge,
+vs the touch controller.
+
+Expose the reset lines that are on the Atmel's port C via the GPIO
+API so that they can be controlled appropriately.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../regulator/rpi-panel-attiny-regulator.c    | 115 +++++++++++++++---
+ 1 file changed, 97 insertions(+), 18 deletions(-)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -8,6 +8,7 @@
+ #include <linux/backlight.h>
+ #include <linux/err.h>
+ #include <linux/gpio.h>
++#include <linux/gpio/driver.h>
+ #include <linux/i2c.h>
+ #include <linux/init.h>
+ #include <linux/interrupt.h>
+@@ -44,10 +45,30 @@
+ #define PC_RST_LCD_N		BIT(2)
+ #define PC_RST_BRIDGE_N		BIT(3)
+ 
++enum gpio_signals {
++	RST_BRIDGE_N,	/* TC358762 bridge reset */
++	RST_TP_N,	/* Touch controller reset */
++	NUM_GPIO
++};
++
++struct gpio_signal_mappings {
++	unsigned int reg;
++	unsigned int mask;
++};
++
++static const struct gpio_signal_mappings mappings[NUM_GPIO] = {
++	[RST_BRIDGE_N] = { REG_PORTC, PC_RST_BRIDGE_N | PC_RST_LCD_N  },
++	[RST_TP_N] = { REG_PORTC, PC_RST_TP_N },
++};
++
+ struct attiny_lcd {
+ 	/* lock to serialise overall accesses to the Atmel */
+ 	struct mutex	lock;
+ 	struct regmap	*regmap;
++	bool gpio_states[NUM_GPIO];
++	u8 port_states[3];
++
++	struct gpio_chip gc;
+ };
+ 
+ static const struct regmap_config attiny_regmap_config = {
+@@ -58,6 +79,17 @@ static const struct regmap_config attiny
+ 	.cache_type = REGCACHE_NONE,
+ };
+ 
++static int attiny_set_port_state(struct attiny_lcd *state, int reg, u8 val)
++{
++	state->port_states[reg - REG_PORTA] = val;
++	return regmap_write(state->regmap, reg, val);
++};
++
++static u8 attiny_get_port_state(struct attiny_lcd *state, int reg)
++{
++	return state->port_states[reg - REG_PORTA];
++};
++
+ static int attiny_lcd_power_enable(struct regulator_dev *rdev)
+ {
+ 	struct attiny_lcd *state = rdev_get_drvdata(rdev);
+@@ -65,7 +97,7 @@ static int attiny_lcd_power_enable(struc
+ 	mutex_lock(&state->lock);
+ 
+ 	/* Ensure bridge, and tp stay in reset */
+-	regmap_write(rdev->regmap, REG_PORTC, 0);
++	attiny_set_port_state(state, REG_PORTC, 0);
+ 	usleep_range(5000, 10000);
+ 
+ 	/* Default to the same orientation as the closed source
+@@ -73,26 +105,16 @@ static int attiny_lcd_power_enable(struc
+ 	 * configuration will be supported using VC4's plane
+ 	 * orientation bits.
+ 	 */
+-	regmap_write(rdev->regmap, REG_PORTA, PA_LCD_LR);
++	attiny_set_port_state(state, REG_PORTA, PA_LCD_LR);
+ 	usleep_range(5000, 10000);
+-	regmap_write(rdev->regmap, REG_PORTB, PB_LCD_MAIN);
++	/* Main regulator on, and power to the panel (LCD_VCC_N) */
++	attiny_set_port_state(state, REG_PORTB, PB_LCD_MAIN);
+ 	usleep_range(5000, 10000);
+ 	/* Bring controllers out of reset */
+-	regmap_write(rdev->regmap, REG_PORTC,
+-		     PC_LED_EN | PC_RST_BRIDGE_N | PC_RST_LCD_N | PC_RST_TP_N);
++	attiny_set_port_state(state, REG_PORTC, PC_LED_EN);
+ 
+ 	msleep(80);
+ 
+-	regmap_write(rdev->regmap, REG_ADDR_H, 0x04);
+-	usleep_range(5000, 8000);
+-	regmap_write(rdev->regmap, REG_ADDR_L, 0x7c);
+-	usleep_range(5000, 8000);
+-	regmap_write(rdev->regmap, REG_WRITE_DATA_H, 0x00);
+-	usleep_range(5000, 8000);
+-	regmap_write(rdev->regmap, REG_WRITE_DATA_L, 0x00);
+-
+-	msleep(100);
+-
+ 	mutex_unlock(&state->lock);
+ 
+ 	return 0;
+@@ -106,11 +128,12 @@ static int attiny_lcd_power_disable(stru
+ 
+ 	regmap_write(rdev->regmap, REG_PWM, 0);
+ 	usleep_range(5000, 10000);
+-	regmap_write(rdev->regmap, REG_PORTA, 0);
++
++	attiny_set_port_state(state, REG_PORTA, 0);
+ 	usleep_range(5000, 10000);
+-	regmap_write(rdev->regmap, REG_PORTB, PB_LCD_VCC_N);
++	attiny_set_port_state(state, REG_PORTB, PB_LCD_VCC_N);
+ 	usleep_range(5000, 10000);
+-	regmap_write(rdev->regmap, REG_PORTC, 0);
++	attiny_set_port_state(state, REG_PORTC, 0);
+ 	msleep(30);
+ 
+ 	mutex_unlock(&state->lock);
+@@ -211,6 +234,45 @@ static const struct backlight_ops attiny
+ 	.get_brightness	= attiny_get_brightness,
+ };
+ 
++static int attiny_gpio_get_direction(struct gpio_chip *gc, unsigned int off)
++{
++	return GPIO_LINE_DIRECTION_OUT;
++}
++
++static void attiny_gpio_set(struct gpio_chip *gc, unsigned int off, int val)
++{
++	struct attiny_lcd *state = gpiochip_get_data(gc);
++	u8 last_val;
++
++	if (off >= NUM_GPIO)
++		return;
++
++	mutex_lock(&state->lock);
++
++	last_val = attiny_get_port_state(state, mappings[off].reg);
++	if (val)
++		last_val |= mappings[off].mask;
++	else
++		last_val &= ~mappings[off].mask;
++
++	attiny_set_port_state(state, mappings[off].reg, last_val);
++
++	if (off == RST_BRIDGE_N && val) {
++		usleep_range(5000, 8000);
++		regmap_write(state->regmap, REG_ADDR_H, 0x04);
++		usleep_range(5000, 8000);
++		regmap_write(state->regmap, REG_ADDR_L, 0x7c);
++		usleep_range(5000, 8000);
++		regmap_write(state->regmap, REG_WRITE_DATA_H, 0x00);
++		usleep_range(5000, 8000);
++		regmap_write(state->regmap, REG_WRITE_DATA_L, 0x00);
++
++		msleep(100);
++	}
++
++	mutex_unlock(&state->lock);
++}
++
+ /*
+  * I2C driver interface functions
+  */
+@@ -289,6 +351,23 @@ static int attiny_i2c_probe(struct i2c_c
+ 
+ 	bl->props.brightness = 0xff;
+ 
++	state->gc.parent = &i2c->dev;
++	state->gc.label = i2c->name;
++	state->gc.owner = THIS_MODULE;
++	state->gc.of_node = i2c->dev.of_node;
++	state->gc.base = -1;
++	state->gc.ngpio = NUM_GPIO;
++
++	state->gc.set = attiny_gpio_set;
++	state->gc.get_direction = attiny_gpio_get_direction;
++	state->gc.can_sleep = true;
++
++	ret = devm_gpiochip_add_data(&i2c->dev, &state->gc, state);
++	if (ret) {
++		dev_err(&i2c->dev, "Failed to create gpiochip: %d\n", ret);
++		goto error;
++	}
++
+ 	return 0;
+ 
+ error:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0486-staging-bcm2835-codec-Change-the-default-codec-res-t.patch b/target/linux/bcm27xx/patches-5.15/950-0486-staging-bcm2835-codec-Change-the-default-codec-res-t.patch
new file mode 100644
index 0000000000..52754e2018
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0486-staging-bcm2835-codec-Change-the-default-codec-res-t.patch
@@ -0,0 +1,40 @@
+From ac2682411d03cf2951abf2856aeaf10206e700fc Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 13 May 2021 11:56:21 +0100
+Subject: [PATCH] staging/bcm2835-codec: Change the default codec res
+ to 32x32
+
+In order to effectively guarantee that a V4L2_EVENT_SOURCE_CHANGE
+event occurs, adopt a default resolution of 32x32 so that it
+is incredibly unlikely to be decoding a stream of that resolution
+and therefore failing to note a "change" requiring the event.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c            | 15 +++++++++++++--
+ 1 file changed, 13 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -97,8 +97,19 @@ static const char * const components[] =
+ #define MAX_W		1920
+ #define MAX_H		1920
+ #define BPL_ALIGN	32
+-#define DEFAULT_WIDTH	640
+-#define DEFAULT_HEIGHT	480
++/*
++ * The decoder spec supports the V4L2_EVENT_SOURCE_CHANGE event, but the docs
++ * seem to want it to always be generated on startup, which prevents the client
++ * from configuring the CAPTURE queue based on any parsing it has already done
++ * which may save time and allow allocation of CAPTURE buffers early. Surely
++ * SOURCE_CHANGE means something has changed, not just "always notify".
++ *
++ * For those clients that don't set the CAPTURE resolution, adopt a default
++ * resolution that is seriously unlikely to be correct, therefore almost
++ * guaranteed to get the SOURCE_CHANGE event.
++ */
++#define DEFAULT_WIDTH	32
++#define DEFAULT_HEIGHT	32
+ /*
+  * The unanswered question - what is the maximum size of a compressed frame?
+  * V4L2 mandates that the encoded frame must fit in a single buffer. Sizing
diff --git a/target/linux/bcm27xx/patches-5.15/950-0487-staging-vchiq-mmal-Add-buffer-flags-for-interlaced-v.patch b/target/linux/bcm27xx/patches-5.15/950-0487-staging-vchiq-mmal-Add-buffer-flags-for-interlaced-v.patch
new file mode 100644
index 0000000000..23bcca475c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0487-staging-vchiq-mmal-Add-buffer-flags-for-interlaced-v.patch
@@ -0,0 +1,42 @@
+From 226d10bbfa79e92aaca8bdf64ec2e0aebbfe7610 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sun, 10 Jan 2021 19:05:17 +0000
+Subject: [PATCH] staging/vchiq-mmal: Add buffer flags for interlaced
+ video
+
+Add the buffer flags that the firmware uses to identify fields
+on interlaced video
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/vchiq-mmal/mmal-msg.h       | 19 +++++++++++++++++++
+ 1 file changed, 19 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-msg.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-msg.h
+@@ -253,6 +253,25 @@ struct mmal_msg_port_action_reply {
+ /* Signals that a buffer failed to be transmitted */
+ #define MMAL_BUFFER_HEADER_FLAG_TRANSMISSION_FAILED    BIT(10)
+ 
++/* Video buffer header flags
++ * videobufferheaderflags
++ * The following flags describe properties of a video buffer header.
++ * As there is no collision with the MMAL_BUFFER_HEADER_FLAGS_ defines, these
++ * flags will also be present in the MMAL_BUFFER_HEADER_T flags field.
++ */
++#define MMAL_BUFFER_HEADER_FLAG_FORMAT_SPECIFIC_START_BIT 16
++#define MMAL_BUFFER_HEADER_FLAG_FORMAT_SPECIFIC_START \
++			(1 << MMAL_BUFFER_HEADER_FLAG_FORMAT_SPECIFIC_START_BIT)
++/* Signals an interlaced video frame */
++#define MMAL_BUFFER_HEADER_VIDEO_FLAG_INTERLACED \
++			(MMAL_BUFFER_HEADER_FLAG_FORMAT_SPECIFIC_START << 0)
++/*
++ * Signals that the top field of the current interlaced frame should be
++ * displayed first
++ */
++#define MMAL_BUFFER_HEADER_VIDEO_FLAG_TOP_FIELD_FIRST \
++			(MMAL_BUFFER_HEADER_FLAG_FORMAT_SPECIFIC_START << 1)
++
+ struct mmal_driver_buffer {
+ 	u32 magic;
+ 	u32 component_handle;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0488-staging-vchiq-mmal-Add-parameters-for-interlaced-vid.patch b/target/linux/bcm27xx/patches-5.15/950-0488-staging-vchiq-mmal-Add-parameters-for-interlaced-vid.patch
new file mode 100644
index 0000000000..e79797e9f4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0488-staging-vchiq-mmal-Add-parameters-for-interlaced-vid.patch
@@ -0,0 +1,61 @@
+From c42a30d856fc0aa00089121f199d51aece77e57f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 5 Aug 2021 16:38:34 +0100
+Subject: [PATCH] staging/vchiq-mmal: Add parameters for interlaced
+ video support
+
+Adds enum mmal_interlace_type and struct
+mmal_parameter_video_interlace_type to allow for querying the
+interlacing mode on decoders.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vchiq-mmal/mmal-parameters.h              | 37 +++++++++++++++++++
+ 1 file changed, 37 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -809,6 +809,43 @@ struct mmal_parameter_displayregion {
+ 	u32 alpha;
+ };
+ 
++enum mmal_interlace_type {
++	/* The data is not interlaced, it is progressive scan */
++	MMAL_INTERLACE_PROGRESSIVE,
++	/*
++	 * The data is interlaced, fields sent separately in temporal order, with
++	 * upper field first
++	 */
++	MMAL_INTERLACE_FIELD_SINGLE_UPPER_FIRST,
++	/*
++	 * The data is interlaced, fields sent separately in temporal order, with
++	 * lower field first
++	 */
++	MMAL_INTERLACE_FIELD_SINGLE_LOWER_FIRST,
++	/*
++	 * The data is interlaced, two fields sent together line interleaved,
++	 * with the upper field temporally earlier
++	 */
++	MMAL_INTERLACE_FIELDS_INTERLEAVED_UPPER_FIRST,
++	/*
++	 * The data is interlaced, two fields sent together line interleaved,
++	 * with the lower field temporally earlier
++	 */
++	MMAL_INTERLACE_FIELDS_INTERLEAVED_LOWER_FIRST,
++	/*
++	 * The stream may contain a mixture of progressive and interlaced
++	 * frames
++	 */
++	MMAL_INTERLACE_MIXED,
++
++	MMAL_INTERLACE_DUMMY = 0x7FFFFFFF
++};
++
++struct mmal_parameter_video_interlace_type {
++	enum mmal_interlace_type mode;	/* The interlace type of the content */
++	u32 bRepeatFirstField;		/* Whether to repeat the first field */
++};
++
+ #define MMAL_MAX_IMAGEFX_PARAMETERS 5
+ 
+ struct mmal_parameter_imagefx_parameters {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0489-staging-bcm2835-codec-Add-support-for-decoding-inter.patch b/target/linux/bcm27xx/patches-5.15/950-0489-staging-bcm2835-codec-Add-support-for-decoding-inter.patch
new file mode 100644
index 0000000000..7d5162d4fc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0489-staging-bcm2835-codec-Add-support-for-decoding-inter.patch
@@ -0,0 +1,173 @@
+From 6c7a2caf88dda1aa4459b80d399da37dff6c6942 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 18 Dec 2020 19:56:31 +0000
+Subject: [PATCH] staging/bcm2835-codec: Add support for decoding
+ interlaced streams
+
+The video decoder can support decoding interlaced streams, so add
+the required plumbing to signal this correctly.
+
+The encoder and ISP do NOT support interlaced data, so trying to
+configure an interlaced format on those nodes will be rejected.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 84 +++++++++++++++++--
+ 1 file changed, 77 insertions(+), 7 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -619,6 +619,7 @@ struct bcm2835_codec_q_data {
+ 	unsigned int		crop_height;
+ 	bool			selection_set;
+ 	struct v4l2_fract	aspect_ratio;
++	enum v4l2_field		field;
+ 
+ 	unsigned int		sizeimage;
+ 	unsigned int		sequence;
+@@ -986,6 +987,10 @@ static void handle_fmt_changed(struct bc
+ 	struct bcm2835_codec_q_data *q_data;
+ 	struct mmal_msg_event_format_changed *format =
+ 		(struct mmal_msg_event_format_changed *)mmal_buf->buffer;
++	struct mmal_parameter_video_interlace_type interlace;
++	int interlace_size = sizeof(interlace);
++	int ret;
++
+ 	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Format changed: buff size min %u, rec %u, buff num min %u, rec %u\n",
+ 		 __func__,
+ 		 format->buffer_size_min,
+@@ -1029,6 +1034,30 @@ static void handle_fmt_changed(struct bc
+ 	q_data->aspect_ratio.numerator = format->es.video.par.num;
+ 	q_data->aspect_ratio.denominator = format->es.video.par.den;
+ 
++	ret = vchiq_mmal_port_parameter_get(ctx->dev->instance,
++					    &ctx->component->output[0],
++					    MMAL_PARAMETER_VIDEO_INTERLACE_TYPE,
++					    &interlace,
++					    &interlace_size);
++	if (!ret) {
++		switch (interlace.mode) {
++		case MMAL_INTERLACE_PROGRESSIVE:
++		default:
++			q_data->field = V4L2_FIELD_NONE;
++			break;
++		case MMAL_INTERLACE_FIELDS_INTERLEAVED_UPPER_FIRST:
++			q_data->field = V4L2_FIELD_INTERLACED_TB;
++			break;
++		case MMAL_INTERLACE_FIELDS_INTERLEAVED_LOWER_FIRST:
++			q_data->field = V4L2_FIELD_INTERLACED_BT;
++			break;
++		}
++		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: interlace mode %u, v4l2 field %u\n",
++			 __func__, interlace.mode, q_data->field);
++	} else {
++		q_data->field = V4L2_FIELD_NONE;
++	}
++
+ 	queue_res_chg_event(ctx);
+ }
+ 
+@@ -1101,6 +1130,22 @@ static void op_buffer_cb(struct vchiq_mm
+ 	vb2->vb2_buf.timestamp = mmal_buf->pts * 1000;
+ 
+ 	vb2_set_plane_payload(&vb2->vb2_buf, 0, mmal_buf->length);
++	switch (mmal_buf->mmal_flags &
++				(MMAL_BUFFER_HEADER_VIDEO_FLAG_INTERLACED |
++				 MMAL_BUFFER_HEADER_VIDEO_FLAG_TOP_FIELD_FIRST)) {
++	case 0:
++	case MMAL_BUFFER_HEADER_VIDEO_FLAG_TOP_FIELD_FIRST: /* Bogus */
++		vb2->field = V4L2_FIELD_NONE;
++		break;
++	case MMAL_BUFFER_HEADER_VIDEO_FLAG_INTERLACED:
++		vb2->field = V4L2_FIELD_INTERLACED_BT;
++		break;
++	case (MMAL_BUFFER_HEADER_VIDEO_FLAG_INTERLACED |
++	      MMAL_BUFFER_HEADER_VIDEO_FLAG_TOP_FIELD_FIRST):
++		vb2->field = V4L2_FIELD_INTERLACED_TB;
++		break;
++	}
++
+ 	if (mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_KEYFRAME)
+ 		vb2->flags |= V4L2_BUF_FLAG_KEYFRAME;
+ 
+@@ -1272,7 +1317,7 @@ static int vidioc_g_fmt(struct bcm2835_c
+ 	f->fmt.pix_mp.width			= q_data->crop_width;
+ 	f->fmt.pix_mp.height			= q_data->height;
+ 	f->fmt.pix_mp.pixelformat		= q_data->fmt->fourcc;
+-	f->fmt.pix_mp.field			= V4L2_FIELD_NONE;
++	f->fmt.pix_mp.field			= q_data->field;
+ 	f->fmt.pix_mp.colorspace		= ctx->colorspace;
+ 	f->fmt.pix_mp.plane_fmt[0].sizeimage	= q_data->sizeimage;
+ 	f->fmt.pix_mp.plane_fmt[0].bytesperline	= q_data->bytesperline;
+@@ -1347,7 +1392,33 @@ static int vidioc_try_fmt(struct bcm2835
+ 	memset(f->fmt.pix_mp.plane_fmt[0].reserved, 0,
+ 	       sizeof(f->fmt.pix_mp.plane_fmt[0].reserved));
+ 
+-	f->fmt.pix_mp.field = V4L2_FIELD_NONE;
++	if (ctx->dev->role == DECODE) {
++		switch (f->fmt.pix_mp.field) {
++		/*
++		 * All of this is pretty much guesswork as we'll set the
++		 * interlace format correctly come format changed, and signal
++		 * it appropriately on each buffer.
++		 */
++		default:
++		case V4L2_FIELD_NONE:
++		case V4L2_FIELD_ANY:
++			f->fmt.pix_mp.field = V4L2_FIELD_NONE;
++			break;
++		case V4L2_FIELD_INTERLACED:
++			f->fmt.pix_mp.field = V4L2_FIELD_INTERLACED;
++			break;
++		case V4L2_FIELD_TOP:
++		case V4L2_FIELD_BOTTOM:
++		case V4L2_FIELD_INTERLACED_TB:
++			f->fmt.pix_mp.field = V4L2_FIELD_INTERLACED_TB;
++			break;
++		case V4L2_FIELD_INTERLACED_BT:
++			f->fmt.pix_mp.field = V4L2_FIELD_INTERLACED_BT;
++			break;
++		}
++	} else {
++		f->fmt.pix_mp.field = V4L2_FIELD_NONE;
++	}
+ 
+ 	return 0;
+ }
+@@ -1430,6 +1501,8 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 	ctx->ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
+ 	ctx->quant = f->fmt.pix_mp.quantization;
+ 
++	q_data->field = f->fmt.pix_mp.field;
++
+ 	/* All parameters should have been set correctly by try_fmt */
+ 	q_data->bytesperline = f->fmt.pix_mp.plane_fmt[0].bytesperline;
+ 	q_data->sizeimage = f->fmt.pix_mp.plane_fmt[0].sizeimage;
+@@ -2429,11 +2502,6 @@ static int bcm2835_codec_buf_prepare(str
+ 	if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
+ 		if (vbuf->field == V4L2_FIELD_ANY)
+ 			vbuf->field = V4L2_FIELD_NONE;
+-		if (vbuf->field != V4L2_FIELD_NONE) {
+-			v4l2_err(&ctx->dev->v4l2_dev, "%s field isn't supported\n",
+-				 __func__);
+-			return -EINVAL;
+-		}
+ 	}
+ 
+ 	if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
+@@ -2735,6 +2803,7 @@ static int bcm2835_codec_open(struct fil
+ 			      ctx->q_data[V4L2_M2M_SRC].crop_width,
+ 			      ctx->q_data[V4L2_M2M_SRC].height,
+ 			      ctx->q_data[V4L2_M2M_SRC].fmt);
++	ctx->q_data[V4L2_M2M_SRC].field = V4L2_FIELD_NONE;
+ 
+ 	ctx->q_data[V4L2_M2M_DST].crop_width = DEFAULT_WIDTH;
+ 	ctx->q_data[V4L2_M2M_DST].crop_height = DEFAULT_HEIGHT;
+@@ -2749,6 +2818,7 @@ static int bcm2835_codec_open(struct fil
+ 			      ctx->q_data[V4L2_M2M_DST].fmt);
+ 	ctx->q_data[V4L2_M2M_DST].aspect_ratio.numerator = 1;
+ 	ctx->q_data[V4L2_M2M_DST].aspect_ratio.denominator = 1;
++	ctx->q_data[V4L2_M2M_DST].field = V4L2_FIELD_NONE;
+ 
+ 	ctx->colorspace = V4L2_COLORSPACE_REC709;
+ 	ctx->bitrate = 10 * 1000 * 1000;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0490-staging-bcm2835-codec-Correct-ENUM_FRAMESIZES-stepsi.patch b/target/linux/bcm27xx/patches-5.15/950-0490-staging-bcm2835-codec-Correct-ENUM_FRAMESIZES-stepsi.patch
new file mode 100644
index 0000000000..4d74cd62ca
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0490-staging-bcm2835-codec-Correct-ENUM_FRAMESIZES-stepsi.patch
@@ -0,0 +1,29 @@
+From c1c9a3f124f3273fc076651f3f89d1746d5bee77 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 5 Aug 2021 15:11:23 +0100
+Subject: [PATCH] staging/bcm2835-codec: Correct ENUM_FRAMESIZES
+ stepsize to 2
+
+Being YUV420 formats, the step size is always 2 to avoid part
+chroma subsampling.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c  | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -2222,10 +2222,10 @@ static int vidioc_enum_framesizes(struct
+ 
+ 	fsize->stepwise.min_width = MIN_W;
+ 	fsize->stepwise.max_width = MAX_W;
+-	fsize->stepwise.step_width = 1;
++	fsize->stepwise.step_width = 2;
+ 	fsize->stepwise.min_height = MIN_H;
+ 	fsize->stepwise.max_height = MAX_H;
+-	fsize->stepwise.step_height = 1;
++	fsize->stepwise.step_height = 2;
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0491-staging-bcm2835-codec-Return-buffers-to-QUEUED-not-E.patch b/target/linux/bcm27xx/patches-5.15/950-0491-staging-bcm2835-codec-Return-buffers-to-QUEUED-not-E.patch
new file mode 100644
index 0000000000..f33f603356
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0491-staging-bcm2835-codec-Return-buffers-to-QUEUED-not-E.patch
@@ -0,0 +1,35 @@
+From a07df18f2992baca3fa9d6a16ae93b585786c5d4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 5 Aug 2021 16:46:42 +0100
+Subject: [PATCH] staging/bcm2835-codec: Return buffers to QUEUED not
+ ERROR state
+
+Should start_streaming fail, or buffers be queued during
+stop_streaming, they should be returned to the core as QUEUED
+and not (as currently) as ERROR.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c  | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1111,7 +1111,7 @@ static void op_buffer_cb(struct vchiq_mm
+ 		v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: Empty buffer - flags %04x",
+ 			 __func__, mmal_buf->mmal_flags);
+ 		if (!(mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_EOS)) {
+-			vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_ERROR);
++			vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_QUEUED);
+ 			if (!port->enabled)
+ 				complete(&ctx->frame_cmplt);
+ 			return;
+@@ -2683,7 +2683,7 @@ static void bcm2835_codec_stop_streaming
+ 		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: return buffer %p\n",
+ 			 __func__, vbuf);
+ 
+-		v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
++		v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
+ 	}
+ 
+ 	/* Disable MMAL port - this will flush buffers back */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0492-staging-bcm2835_codec-Log-MMAL-flags-in-hex.patch b/target/linux/bcm27xx/patches-5.15/950-0492-staging-bcm2835_codec-Log-MMAL-flags-in-hex.patch
new file mode 100644
index 0000000000..7bdfc399ab
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0492-staging-bcm2835_codec-Log-MMAL-flags-in-hex.patch
@@ -0,0 +1,24 @@
+From dbc825d8cf0435da46532cfbc7199768abc32b4c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 6 Aug 2021 13:43:48 +0100
+Subject: [PATCH] staging/bcm2835_codec: Log MMAL flags in hex
+
+The flags is a bitmask, so it's far easier to interpret as hex
+data instead of decimal.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c    | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1071,7 +1071,7 @@ static void op_buffer_cb(struct vchiq_mm
+ 	struct vb2_v4l2_buffer *vb2;
+ 
+ 	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev,
+-		 "%s: status:%d, buf:%p, length:%lu, flags %u, pts %lld\n",
++		 "%s: status:%d, buf:%p, length:%lu, flags %04x, pts %lld\n",
+ 		 __func__, status, mmal_buf, mmal_buf->length,
+ 		 mmal_buf->mmal_flags, mmal_buf->pts);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0493-staging-bcm2835-codec-Allow-custom-specified-strides.patch b/target/linux/bcm27xx/patches-5.15/950-0493-staging-bcm2835-codec-Allow-custom-specified-strides.patch
new file mode 100644
index 0000000000..e262d61b85
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0493-staging-bcm2835-codec-Allow-custom-specified-strides.patch
@@ -0,0 +1,39 @@
+From f4d34546637944b30ef09e96aa84802d7d69e72c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 11 Sep 2021 17:21:07 +0100
+Subject: [PATCH] staging: bcm2835-codec: Allow custom specified
+ strides/bytesperline.
+
+If the client provides a bytesperline value in try_fmt/s_fmt then
+validate it and correct if necessary.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c      | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1347,7 +1347,7 @@ static int vidioc_g_fmt_vid_cap(struct f
+ static int vidioc_try_fmt(struct bcm2835_codec_ctx *ctx, struct v4l2_format *f,
+ 			  struct bcm2835_codec_fmt *fmt)
+ {
+-	unsigned int sizeimage;
++	unsigned int sizeimage, min_bytesperline;
+ 
+ 	/*
+ 	 * The V4L2 specification requires the driver to correct the format
+@@ -1375,8 +1375,12 @@ static int vidioc_try_fmt(struct bcm2835
+ 			f->fmt.pix_mp.height = ALIGN(f->fmt.pix_mp.height, 16);
+ 	}
+ 	f->fmt.pix_mp.num_planes = 1;
++	min_bytesperline = get_bytesperline(f->fmt.pix_mp.width, fmt);
++	if (f->fmt.pix_mp.plane_fmt[0].bytesperline < min_bytesperline)
++		f->fmt.pix_mp.plane_fmt[0].bytesperline = min_bytesperline;
+ 	f->fmt.pix_mp.plane_fmt[0].bytesperline =
+-		get_bytesperline(f->fmt.pix_mp.width, fmt);
++		ALIGN(f->fmt.pix_mp.plane_fmt[0].bytesperline, fmt->bytesperline_align);
++
+ 	sizeimage = get_sizeimage(f->fmt.pix_mp.plane_fmt[0].bytesperline,
+ 				  f->fmt.pix_mp.width, f->fmt.pix_mp.height,
+ 				  fmt);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0494-staging-vchiq-mmal-Add-the-deinterlace-image-effects.patch b/target/linux/bcm27xx/patches-5.15/950-0494-staging-vchiq-mmal-Add-the-deinterlace-image-effects.patch
new file mode 100644
index 0000000000..2dbefbad65
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0494-staging-vchiq-mmal-Add-the-deinterlace-image-effects.patch
@@ -0,0 +1,26 @@
+From 1fa0864e1a12eefb246dd48022721a4367885c87 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 6 Aug 2021 15:44:21 +0100
+Subject: [PATCH] staging/vchiq-mmal: Add the deinterlace image effects
+ enums
+
+As we're wanting to wrap the image_fx component for deinterlacing,
+add the deinterlace algorithm values to enum mmal_parameter_imagefx
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -398,6 +398,9 @@ enum mmal_parameter_imagefx {
+ 	MMAL_PARAM_IMAGEFX_COLOURPOINT,
+ 	MMAL_PARAM_IMAGEFX_COLOURBALANCE,
+ 	MMAL_PARAM_IMAGEFX_CARTOON,
++	MMAL_PARAM_IMAGEFX_DEINTERLACE_DOUBLE,
++	MMAL_PARAM_IMAGEFX_DEINTERLACE_ADV,
++	MMAL_PARAM_IMAGEFX_DEINTERLACE_FAST,
+ };
+ 
+ enum MMAL_PARAM_FLICKERAVOID {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0495-staging-bcm2835_codec-Add-support-for-image_fx-to-de.patch b/target/linux/bcm27xx/patches-5.15/950-0495-staging-bcm2835_codec-Add-support-for-image_fx-to-de.patch
new file mode 100644
index 0000000000..1823d6269b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0495-staging-bcm2835_codec-Add-support-for-image_fx-to-de.patch
@@ -0,0 +1,267 @@
+From 3fbd7957bae36bbafb54dc7bf1624b158fa2a984 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Fri, 6 Aug 2021 15:37:16 +0100
+Subject: [PATCH] staging/bcm2835_codec: Add support for image_fx to
+ deinterlace
+
+Adds another /dev/video node wrapping image_fx doing deinterlace.
+
+Co-developed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 152 +++++++++++++++++-
+ 1 file changed, 150 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -58,6 +58,10 @@ static int isp_video_nr = 12;
+ module_param(isp_video_nr, int, 0644);
+ MODULE_PARM_DESC(isp_video_nr, "isp video device number");
+ 
++static int deinterlace_video_nr = 18;
++module_param(deinterlace_video_nr, int, 0644);
++MODULE_PARM_DESC(deinterlace_video_nr, "deinterlace video device number");
++
+ /*
+  * Workaround for GStreamer v4l2convert component not considering Bayer formats
+  * as raw, and therefore not considering a V4L2 device that supports them as
+@@ -71,22 +75,33 @@ static unsigned int debug;
+ module_param(debug, uint, 0644);
+ MODULE_PARM_DESC(debug, "activates debug info (0-3)");
+ 
++static bool advanced_deinterlace = true;
++module_param(advanced_deinterlace, bool, 0644);
++MODULE_PARM_DESC(advanced_deinterlace, "Use advanced deinterlace");
++
++static int field_override;
++module_param(field_override, int, 0644);
++MODULE_PARM_DESC(field_override, "force TB(8)/BT(9) field");
++
+ enum bcm2835_codec_role {
+ 	DECODE,
+ 	ENCODE,
+ 	ISP,
++	DEINTERLACE,
+ };
+ 
+ static const char * const roles[] = {
+ 	"decode",
+ 	"encode",
+-	"isp"
++	"isp",
++	"image_fx",
+ };
+ 
+ static const char * const components[] = {
+ 	"ril.video_decode",
+ 	"ril.video_encode",
+ 	"ril.isp",
++	"ril.image_fx",
+ };
+ 
+ /* Timeout for stop_streaming to allow all buffers to return */
+@@ -683,6 +698,7 @@ struct bcm2835_codec_driver {
+ 	struct bcm2835_codec_dev *encode;
+ 	struct bcm2835_codec_dev *decode;
+ 	struct bcm2835_codec_dev *isp;
++	struct bcm2835_codec_dev *deinterlace;
+ };
+ 
+ enum {
+@@ -1196,6 +1212,19 @@ static void vb2_to_mmal_buffer(struct m2
+ 	do_div(pts, 1000);
+ 	buf->mmal.pts = pts;
+ 	buf->mmal.dts = MMAL_TIME_UNKNOWN;
++
++	switch (field_override ? field_override : vb2->field) {
++	default:
++	case V4L2_FIELD_NONE:
++		break;
++	case V4L2_FIELD_INTERLACED_BT:
++		buf->mmal.mmal_flags |= MMAL_BUFFER_HEADER_VIDEO_FLAG_INTERLACED;
++		break;
++	case V4L2_FIELD_INTERLACED_TB:
++		buf->mmal.mmal_flags |= MMAL_BUFFER_HEADER_VIDEO_FLAG_INTERLACED |
++					MMAL_BUFFER_HEADER_VIDEO_FLAG_TOP_FIELD_FIRST;
++		break;
++	}
+ }
+ 
+ /* device_run() - prepares and starts the device
+@@ -1396,7 +1425,7 @@ static int vidioc_try_fmt(struct bcm2835
+ 	memset(f->fmt.pix_mp.plane_fmt[0].reserved, 0,
+ 	       sizeof(f->fmt.pix_mp.plane_fmt[0].reserved));
+ 
+-	if (ctx->dev->role == DECODE) {
++	if (ctx->dev->role == DECODE || ctx->dev->role == DEINTERLACE) {
+ 		switch (f->fmt.pix_mp.field) {
+ 		/*
+ 		 * All of this is pretty much guesswork as we'll set the
+@@ -1686,6 +1715,46 @@ static int vidioc_g_selection(struct fil
+ 		break;
+ 	case ISP:
+ 		break;
++	case DEINTERLACE:
++		if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
++			switch (s->target) {
++			case V4L2_SEL_TGT_COMPOSE_DEFAULT:
++			case V4L2_SEL_TGT_COMPOSE:
++				s->r.left = 0;
++				s->r.top = 0;
++				s->r.width = q_data->crop_width;
++				s->r.height = q_data->crop_height;
++				break;
++			case V4L2_SEL_TGT_COMPOSE_BOUNDS:
++				s->r.left = 0;
++				s->r.top = 0;
++				s->r.width = q_data->crop_width;
++				s->r.height = q_data->crop_height;
++				break;
++			default:
++				return -EINVAL;
++			}
++		} else {
++			/* must be V4L2_BUF_TYPE_VIDEO_OUTPUT */
++			switch (s->target) {
++			case V4L2_SEL_TGT_CROP_DEFAULT:
++			case V4L2_SEL_TGT_CROP_BOUNDS:
++				s->r.top = 0;
++				s->r.left = 0;
++				s->r.width = q_data->bytesperline;
++				s->r.height = q_data->height;
++				break;
++			case V4L2_SEL_TGT_CROP:
++				s->r.top = 0;
++				s->r.left = 0;
++				s->r.width = q_data->crop_width;
++				s->r.height = q_data->crop_height;
++				break;
++			default:
++				return -EINVAL;
++			}
++		}
++		break;
+ 	}
+ 
+ 	return 0;
+@@ -1761,6 +1830,41 @@ static int vidioc_s_selection(struct fil
+ 		break;
+ 	case ISP:
+ 		break;
++	case DEINTERLACE:
++		if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
++			switch (s->target) {
++			case V4L2_SEL_TGT_COMPOSE:
++				/* Accept cropped image */
++				s->r.left = 0;
++				s->r.top = 0;
++				s->r.width = min(s->r.width, q_data->crop_width);
++				s->r.height = min(s->r.height, q_data->height);
++				q_data->crop_width = s->r.width;
++				q_data->crop_height = s->r.height;
++				q_data->selection_set = true;
++				break;
++			default:
++				return -EINVAL;
++			}
++			break;
++		} else {
++			/* must be V4L2_BUF_TYPE_VIDEO_OUTPUT */
++			switch (s->target) {
++			case V4L2_SEL_TGT_CROP:
++				/* Only support crop from (0,0) */
++				s->r.top = 0;
++				s->r.left = 0;
++				s->r.width = min(s->r.width, q_data->crop_width);
++				s->r.height = min(s->r.height, q_data->height);
++				q_data->crop_width = s->r.width;
++				q_data->crop_height = s->r.height;
++				q_data->selection_set = true;
++				break;
++			default:
++				return -EINVAL;
++			}
++			break;
++		}
+ 	}
+ 
+ 	return 0;
+@@ -2335,6 +2439,30 @@ static int bcm2835_codec_create_componen
+ 					      MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
+ 					      &enable,
+ 					      sizeof(enable));
++	} else if (dev->role == DEINTERLACE) {
++		/* Select the default deinterlace algorithm. */
++		int half_framerate = 0;
++		int default_frame_interval = -1; /* don't interpolate */
++		int frame_type = 5; /* 0=progressive, 3=TFF, 4=BFF, 5=see frame */
++		int use_qpus = 0;
++		enum mmal_parameter_imagefx effect =
++			advanced_deinterlace && ctx->q_data[V4L2_M2M_SRC].crop_width <= 800 ?
++			MMAL_PARAM_IMAGEFX_DEINTERLACE_ADV :
++			MMAL_PARAM_IMAGEFX_DEINTERLACE_FAST;
++		struct mmal_parameter_imagefx_parameters params = {
++			.effect = effect,
++			.num_effect_params = 4,
++			.effect_parameter = { frame_type,
++					      default_frame_interval,
++					      half_framerate,
++					      use_qpus },
++		};
++
++		vchiq_mmal_port_parameter_set(dev->instance,
++					      &ctx->component->output[0],
++					      MMAL_PARAMETER_IMAGE_EFFECT_PARAMETERS,
++					      &params,
++					      sizeof(params));
+ 	}
+ 
+ 	setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_SRC],
+@@ -3173,6 +3301,16 @@ static int bcm2835_codec_create(struct b
+ 		function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
+ 		video_nr = isp_video_nr;
+ 		break;
++	case DEINTERLACE:
++		v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
++		v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
++		function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
++		video_nr = deinterlace_video_nr;
++		break;
+ 	default:
+ 		ret = -EINVAL;
+ 		goto unreg_dev;
+@@ -3268,6 +3406,10 @@ static int bcm2835_codec_probe(struct pl
+ 	if (ret)
+ 		goto out;
+ 
++	ret = bcm2835_codec_create(drv, &drv->deinterlace, DEINTERLACE);
++	if (ret)
++		goto out;
++
+ 	/* Register the media device node */
+ 	if (media_device_register(mdev) < 0)
+ 		goto out;
+@@ -3277,6 +3419,10 @@ static int bcm2835_codec_probe(struct pl
+ 	return 0;
+ 
+ out:
++	if (drv->deinterlace) {
++		bcm2835_codec_destroy(drv->deinterlace);
++		drv->deinterlace = NULL;
++	}
+ 	if (drv->isp) {
+ 		bcm2835_codec_destroy(drv->isp);
+ 		drv->isp = NULL;
+@@ -3298,6 +3444,8 @@ static int bcm2835_codec_remove(struct p
+ 
+ 	media_device_unregister(&drv->mdev);
+ 
++	bcm2835_codec_destroy(drv->deinterlace);
++
+ 	bcm2835_codec_destroy(drv->isp);
+ 
+ 	bcm2835_codec_destroy(drv->encode);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0496-staging-bcm2835-v4l2_codec-Fix-for-encode-selection-.patch b/target/linux/bcm27xx/patches-5.15/950-0496-staging-bcm2835-v4l2_codec-Fix-for-encode-selection-.patch
new file mode 100644
index 0000000000..57b4f302ca
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0496-staging-bcm2835-v4l2_codec-Fix-for-encode-selection-.patch
@@ -0,0 +1,24 @@
+From a9bf65dcc609ee839a705e7301a3846ae09c75d0 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 14 Sep 2021 16:44:18 +0100
+Subject: [PATCH] staging/bcm2835-v4l2_codec: Fix for encode selection
+ API
+
+Matches correct behaviour from DECODE and DEINTERLACE
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c    | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1819,7 +1819,7 @@ static int vidioc_s_selection(struct fil
+ 			s->r.top = 0;
+ 			s->r.left = 0;
+ 			s->r.width = min(s->r.width, q_data->crop_width);
+-			s->r.height = min(s->r.height, q_data->crop_height);
++			s->r.height = min(s->r.height, q_data->height);
+ 			q_data->crop_width = s->r.width;
+ 			q_data->crop_height = s->r.height;
+ 			q_data->selection_set = true;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0497-Add-Raspberry-Pi-PoE-HAT-support.patch b/target/linux/bcm27xx/patches-5.15/950-0497-Add-Raspberry-Pi-PoE-HAT-support.patch
new file mode 100644
index 0000000000..eb3e76a604
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0497-Add-Raspberry-Pi-PoE-HAT-support.patch
@@ -0,0 +1,281 @@
+From cffd250da79aa00b07b14ba9fc36ae7349f0d733 Mon Sep 17 00:00:00 2001
+From: Serge Schneider <serge@raspberrypi.com>
+Date: Mon, 2 Dec 2019 14:48:05 +0000
+Subject: [PATCH] Add Raspberry Pi PoE+ HAT support
+
+Signed-off-by: Serge Schneider <serge@raspberrypi.com>
+---
+ drivers/power/supply/Kconfig               |   6 +
+ drivers/power/supply/Makefile              |   1 +
+ drivers/power/supply/rpi_poe_power.c       | 227 +++++++++++++++++++++
+ include/soc/bcm2835/raspberrypi-firmware.h |   3 +-
+ 4 files changed, 236 insertions(+), 1 deletion(-)
+ create mode 100644 drivers/power/supply/rpi_poe_power.c
+
+--- a/drivers/power/supply/Kconfig
++++ b/drivers/power/supply/Kconfig
+@@ -28,6 +28,12 @@ config POWER_SUPPLY_HWMON
+ 	  Say 'Y' here if you want power supplies to
+ 	  have hwmon sysfs interface too.
+ 
++config RPI_POE_POWER
++	tristate "Raspberry Pi PoE+ HAT power supply driver"
++	depends on RASPBERRYPI_FIRMWARE
++	help
++	  Say Y here to enable support for Raspberry Pi PoE+ (Power over Ethernet
++	  Plus) HAT current measurement.
+ 
+ config PDA_POWER
+ 	tristate "Generic PDA/phone power driver"
+--- a/drivers/power/supply/Makefile
++++ b/drivers/power/supply/Makefile
+@@ -9,6 +9,7 @@ obj-$(CONFIG_POWER_SUPPLY)	+= power_supp
+ obj-$(CONFIG_POWER_SUPPLY_HWMON) += power_supply_hwmon.o
+ obj-$(CONFIG_GENERIC_ADC_BATTERY)	+= generic-adc-battery.o
+ 
++obj-$(CONFIG_RPI_POE_POWER)	+= rpi_poe_power.o
+ obj-$(CONFIG_PDA_POWER)		+= pda_power.o
+ obj-$(CONFIG_APM_POWER)		+= apm_power.o
+ obj-$(CONFIG_AXP20X_POWER)	+= axp20x_usb_power.o
+--- /dev/null
++++ b/drivers/power/supply/rpi_poe_power.c
+@@ -0,0 +1,227 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * rpi-poe-power.c - Raspberry Pi PoE+ HAT power supply driver.
++ *
++ * Copyright (C) 2019 Raspberry Pi (Trading) Ltd.
++ * Based on axp20x_ac_power.c by Quentin Schulz <quentin.schulz@free-electrons.com>
++ *
++ * Author: Serge Schneider <serge@raspberrypi.org>
++ */
++
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/power_supply.h>
++#include <soc/bcm2835/raspberrypi-firmware.h>
++
++#define RPI_POE_ADC_REG			0x2
++#define RPI_POE_FLAG_REG		0x4
++
++#define RPI_POE_FLAG_AT			BIT(0)
++#define RPI_POE_FLAG_OC			BIT(1)
++
++#define RPI_POE_CURRENT_AF_MAX	(2500 * 1000)
++#define RPI_POE_CURRENT_AT_MAX	(5000 * 1000)
++
++#define DRVNAME "rpi-poe-power-supply"
++
++struct rpi_poe_power_supply_ctx {
++	struct power_supply *supply;
++	struct rpi_firmware *fw;
++};
++
++struct fw_tag_data_s {
++	u32 reg;
++	u32 val;
++	u32 ret;
++};
++
++static int write_reg(struct rpi_firmware *fw, u32 reg, u32 *val)
++{
++	struct fw_tag_data_s fw_tag_data = {
++		.reg = reg,
++		.val = *val
++	};
++	int ret;
++
++	ret = rpi_firmware_property(fw, RPI_FIRMWARE_SET_POE_HAT_VAL,
++				    &fw_tag_data, sizeof(fw_tag_data));
++	if (ret)
++		return ret;
++	else if (fw_tag_data.ret)
++		return -EIO;
++	return 0;
++}
++
++static int read_reg(struct rpi_firmware *fw, u32 reg, u32 *val)
++{
++	struct fw_tag_data_s fw_tag_data = {
++		.reg = reg,
++		.val = *val
++	};
++	int ret;
++
++	ret = rpi_firmware_property(fw, RPI_FIRMWARE_GET_POE_HAT_VAL,
++				    &fw_tag_data, sizeof(fw_tag_data));
++	if (ret)
++		return ret;
++	else if (fw_tag_data.ret)
++		return -EIO;
++
++	*val = fw_tag_data.val;
++	return 0;
++}
++
++static int rpi_poe_power_supply_get_property(struct power_supply *psy,
++					enum power_supply_property psp,
++					union power_supply_propval *r_val)
++{
++	struct rpi_poe_power_supply_ctx *ctx = power_supply_get_drvdata(psy);
++	int ret;
++	unsigned int val = 0;
++
++	switch (psp) {
++	case POWER_SUPPLY_PROP_HEALTH:
++		ret = read_reg(ctx->fw, RPI_POE_FLAG_REG, &val);
++		if (ret)
++			return ret;
++
++		if (val & RPI_POE_FLAG_OC) {
++			r_val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
++			val = RPI_POE_FLAG_OC;
++			ret = write_reg(ctx->fw, RPI_POE_FLAG_REG, &val);
++			if (ret)
++				return ret;
++			return 0;
++		}
++
++		r_val->intval = POWER_SUPPLY_HEALTH_GOOD;
++		return 0;
++
++	case POWER_SUPPLY_PROP_ONLINE:
++		ret = read_reg(ctx->fw, RPI_POE_ADC_REG, &val);
++		if (ret)
++			return ret;
++
++		r_val->intval = (val > 5);
++		return 0;
++
++	case POWER_SUPPLY_PROP_CURRENT_AVG:
++		val = 50;
++		ret = read_reg(ctx->fw, RPI_POE_ADC_REG, &val);
++		if (ret)
++			return ret;
++		val = (val * 3300)/9821;
++		r_val->intval = val * 1000;
++		return 0;
++
++	case POWER_SUPPLY_PROP_CURRENT_NOW:
++		ret = read_reg(ctx->fw, RPI_POE_ADC_REG, &val);
++		if (ret)
++			return ret;
++		val = (val * 3300)/9821;
++		r_val->intval = val * 1000;
++		return 0;
++
++	case POWER_SUPPLY_PROP_CURRENT_MAX:
++		ret = read_reg(ctx->fw, RPI_POE_FLAG_REG, &val);
++		if (ret)
++			return ret;
++
++		if (val & RPI_POE_FLAG_AT) {
++			r_val->intval = RPI_POE_CURRENT_AT_MAX;
++			return 0;
++		}
++		r_val->intval = RPI_POE_CURRENT_AF_MAX;
++		return 0;
++
++	default:
++		return -EINVAL;
++	}
++
++	return -EINVAL;
++}
++
++static enum power_supply_property rpi_poe_power_supply_properties[] = {
++	POWER_SUPPLY_PROP_HEALTH,
++	POWER_SUPPLY_PROP_ONLINE,
++	POWER_SUPPLY_PROP_CURRENT_AVG,
++	POWER_SUPPLY_PROP_CURRENT_NOW,
++	POWER_SUPPLY_PROP_CURRENT_MAX,
++};
++
++static const struct power_supply_desc rpi_poe_power_supply_desc = {
++	.name = "rpi-poe",
++	.type = POWER_SUPPLY_TYPE_MAINS,
++	.properties = rpi_poe_power_supply_properties,
++	.num_properties = ARRAY_SIZE(rpi_poe_power_supply_properties),
++	.get_property = rpi_poe_power_supply_get_property,
++};
++
++static int rpi_poe_power_supply_probe(struct platform_device *pdev)
++{
++	struct power_supply_config psy_cfg = {};
++	struct rpi_poe_power_supply_ctx *ctx;
++	struct device_node *fw_node;
++	u32 revision;
++
++	if (!of_device_is_available(pdev->dev.of_node))
++		return -ENODEV;
++
++	fw_node = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
++	if (!fw_node) {
++		dev_err(&pdev->dev, "Missing firmware node\n");
++		return -ENOENT;
++	}
++
++	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++
++	ctx->fw = rpi_firmware_get(fw_node);
++	if (!ctx->fw)
++		return -EPROBE_DEFER;
++	if (rpi_firmware_property(ctx->fw,
++			RPI_FIRMWARE_GET_FIRMWARE_REVISION,
++			&revision, sizeof(revision))) {
++		dev_err(&pdev->dev, "Failed to get firmware revision\n");
++		return -ENOENT;
++	}
++	if (revision < 0x60af72e8) {
++		dev_err(&pdev->dev, "Unsupported firmware\n");
++		return -ENOENT;
++	}
++	platform_set_drvdata(pdev, ctx);
++
++	psy_cfg.of_node = pdev->dev.of_node;
++	psy_cfg.drv_data = ctx;
++
++	ctx->supply = devm_power_supply_register(&pdev->dev,
++						   &rpi_poe_power_supply_desc,
++						   &psy_cfg);
++	if (IS_ERR(ctx->supply))
++		return PTR_ERR(ctx->supply);
++
++	return 0;
++}
++
++static const struct of_device_id of_rpi_poe_power_supply_match[] = {
++	{ .compatible = "raspberrypi,rpi-poe-power-supply", },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, of_rpi_poe_power_supply_match);
++
++static struct platform_driver rpi_poe_power_supply_driver = {
++	.probe = rpi_poe_power_supply_probe,
++	.driver = {
++		.name = DRVNAME,
++		.of_match_table = of_rpi_poe_power_supply_match
++	},
++};
++
++module_platform_driver(rpi_poe_power_supply_driver);
++
++MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
++MODULE_ALIAS("platform:" DRVNAME);
++MODULE_DESCRIPTION("Raspberry Pi PoE+ HAT power supply driver");
++MODULE_LICENSE("GPL");
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -92,7 +92,8 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_GET_PERIPH_REG =                         0x00030045,
+ 	RPI_FIRMWARE_SET_PERIPH_REG =                         0x00038045,
+ 	RPI_FIRMWARE_GET_POE_HAT_VAL =                        0x00030049,
+-	RPI_FIRMWARE_SET_POE_HAT_VAL =                        0x00030050,
++	RPI_FIRMWARE_SET_POE_HAT_VAL =                        0x00038049,
++	RPI_FIRMWARE_SET_POE_HAT_VAL_OLD =                    0x00030050,
+ 	RPI_FIRMWARE_NOTIFY_XHCI_RESET =                      0x00030058,
+ 	RPI_FIRMWARE_GET_REBOOT_FLAGS =                       0x00030064,
+ 	RPI_FIRMWARE_SET_REBOOT_FLAGS =                       0x00038064,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0498-ARM-dts-Restore-downstream-dtbs-to-Makefile.patch b/target/linux/bcm27xx/patches-5.15/950-0498-ARM-dts-Restore-downstream-dtbs-to-Makefile.patch
new file mode 100644
index 0000000000..19d41f1a6c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0498-ARM-dts-Restore-downstream-dtbs-to-Makefile.patch
@@ -0,0 +1,31 @@
+From f7cca3c1a3c3e710849603d296c5c90270784055 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 22 Sep 2021 09:16:46 +0100
+Subject: [PATCH] ARM: dts: Restore downstream dtbs to Makefile
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/Makefile | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -1,8 +1,18 @@
+ # SPDX-License-Identifier: GPL-2.0
+ 
+ dtb-$(CONFIG_ARCH_BCM2835) += \
++	bcm2708-rpi-b.dtb \
+ 	bcm2708-rpi-b-rev1.dtb \
++	bcm2708-rpi-b-plus.dtb \
+ 	bcm2708-rpi-cm.dtb \
++	bcm2708-rpi-zero.dtb \
++	bcm2708-rpi-zero-w.dtb \
++	bcm2709-rpi-2-b.dtb \
++	bcm2710-rpi-2-b.dtb \
++	bcm2710-rpi-3-b.dtb \
++	bcm2710-rpi-3-b-plus.dtb \
++	bcm2711-rpi-4-b.dtb \
++	bcm2711-rpi-400.dtb \
+ 	bcm2710-rpi-cm3.dtb \
+ 	bcm2711-rpi-cm4.dtb
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0499-media-rpivid-Avoid-returning-EINVAL-to-a-G_FMT-ioctl.patch b/target/linux/bcm27xx/patches-5.15/950-0499-media-rpivid-Avoid-returning-EINVAL-to-a-G_FMT-ioctl.patch
new file mode 100644
index 0000000000..acfc077326
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0499-media-rpivid-Avoid-returning-EINVAL-to-a-G_FMT-ioctl.patch
@@ -0,0 +1,277 @@
+From 7580dc7daa2ac363c20674545be200802e4f6dce Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Wed, 1 Sep 2021 16:34:50 +0100
+Subject: [PATCH] media: rpivid: Avoid returning EINVAL to a G_FMT
+ ioctl
+
+V4L2 spec says that G/S/TRY_FMT IOCTLs should never return errors for
+anything other than wrong buffer types. Improve the capture format
+function such that this is so and unsupported values get converted
+to supported ones properly.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.c       |  1 -
+ drivers/staging/media/rpivid/rpivid.h       |  2 -
+ drivers/staging/media/rpivid/rpivid_video.c | 99 +++++++++++----------
+ drivers/staging/media/rpivid/rpivid_video.h |  3 +-
+ 4 files changed, 54 insertions(+), 51 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.c
++++ b/drivers/staging/media/rpivid/rpivid.c
+@@ -249,7 +249,6 @@ static int rpivid_open(struct file *file
+ 	/* The only bit of format info that we can guess now is H265 src
+ 	 * Everything else we need more info for
+ 	 */
+-	ctx->src_fmt.pixelformat = RPIVID_SRC_PIXELFORMAT_DEFAULT;
+ 	rpivid_prepare_src_format(&ctx->src_fmt);
+ 
+ 	v4l2_fh_add(&ctx->fh);
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -35,8 +35,6 @@
+ 
+ #define RPIVID_QUIRK_NO_DMA_OFFSET	BIT(0)
+ 
+-#define RPIVID_SRC_PIXELFORMAT_DEFAULT	V4L2_PIX_FMT_HEVC_SLICE
+-
+ enum rpivid_irq_status {
+ 	RPIVID_IRQ_NONE,
+ 	RPIVID_IRQ_ERROR,
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -27,6 +27,8 @@
+ 
+ #define RPIVID_MIN_WIDTH	16U
+ #define RPIVID_MIN_HEIGHT	16U
++#define RPIVID_DEFAULT_WIDTH	1920U
++#define RPIVID_DEFAULT_HEIGHT	1088U
+ #define RPIVID_MAX_WIDTH	4096U
+ #define RPIVID_MAX_HEIGHT	4096U
+ 
+@@ -70,25 +72,22 @@ size_t rpivid_bit_buf_size(unsigned int
+ 	return rpivid_round_up_size(bits_alloc);
+ }
+ 
+-int rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt)
++void rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt)
+ {
+ 	size_t size;
+ 	u32 w;
+ 	u32 h;
+ 
+-	if (pix_fmt->pixelformat != V4L2_PIX_FMT_HEVC_SLICE)
+-		return -EINVAL;
+-
+ 	w = pix_fmt->width;
+ 	h = pix_fmt->height;
+ 	if (!w || !h) {
+-		w = 1920;
+-		h = 1080;
++		w = RPIVID_DEFAULT_WIDTH;
++		h = RPIVID_DEFAULT_HEIGHT;
+ 	}
+-	if (w > 4096)
+-		w = 4096;
+-	if (h > 4096)
+-		h = 4096;
++	if (w > RPIVID_MAX_WIDTH)
++		w = RPIVID_MAX_WIDTH;
++	if (h > RPIVID_MAX_HEIGHT)
++		h = RPIVID_MAX_HEIGHT;
+ 
+ 	if (!pix_fmt->plane_fmt[0].sizeimage ||
+ 	    pix_fmt->plane_fmt[0].sizeimage > SZ_32M) {
+@@ -98,6 +97,7 @@ int rpivid_prepare_src_format(struct v4l
+ 	/* Set a minimum */
+ 	size = max_t(u32, SZ_4K, pix_fmt->plane_fmt[0].sizeimage);
+ 
++	pix_fmt->pixelformat = V4L2_PIX_FMT_HEVC_SLICE;
+ 	pix_fmt->width = w;
+ 	pix_fmt->height = h;
+ 	pix_fmt->num_planes = 1;
+@@ -105,22 +105,33 @@ int rpivid_prepare_src_format(struct v4l
+ 	/* Zero bytes per line for encoded source. */
+ 	pix_fmt->plane_fmt[0].bytesperline = 0;
+ 	pix_fmt->plane_fmt[0].sizeimage = size;
+-
+-	return 0;
+ }
+ 
+-int rpivid_prepare_dst_format(struct v4l2_pix_format_mplane *pix_fmt)
++/* Take any pix_format and make it valid */
++static void rpivid_prepare_dst_format(struct v4l2_pix_format_mplane *pix_fmt)
+ {
+ 	unsigned int width = pix_fmt->width;
+ 	unsigned int height = pix_fmt->height;
+ 	unsigned int sizeimage = pix_fmt->plane_fmt[0].sizeimage;
+ 	unsigned int bytesperline = pix_fmt->plane_fmt[0].bytesperline;
+ 
+-	switch (pix_fmt->pixelformat) {
++	if (!width)
++		width = RPIVID_DEFAULT_WIDTH;
++	if (width > RPIVID_MAX_WIDTH)
++		width = RPIVID_MAX_WIDTH;
++	if (!height)
++		height = RPIVID_DEFAULT_HEIGHT;
++	if (height > RPIVID_MAX_HEIGHT)
++		height = RPIVID_MAX_HEIGHT;
++
+ 	/* For column formats set bytesperline to column height (stride2) */
++	switch (pix_fmt->pixelformat) {
++	default:
++		pix_fmt->pixelformat = V4L2_PIX_FMT_NV12_COL128;
++		fallthrough;
+ 	case V4L2_PIX_FMT_NV12_COL128:
+ 		/* Width rounds up to columns */
+-		width = ALIGN(min(width, RPIVID_MAX_WIDTH), 128);
++		width = ALIGN(width, 128);
+ 
+ 		/* 16 aligned height - not sure we even need that */
+ 		height = ALIGN(height, 16);
+@@ -140,7 +151,7 @@ int rpivid_prepare_dst_format(struct v4l
+ 		/* width in pixels (3 pels = 4 bytes) rounded to 128 byte
+ 		 * columns
+ 		 */
+-		width = ALIGN(((min(width, RPIVID_MAX_WIDTH) + 2) / 3), 32) * 3;
++		width = ALIGN(((width + 2) / 3), 32) * 3;
+ 
+ 		/* 16-aligned height. */
+ 		height = ALIGN(height, 16);
+@@ -157,9 +168,6 @@ int rpivid_prepare_dst_format(struct v4l
+ 		sizeimage = constrain2x(sizeimage,
+ 					bytesperline * width * 4 / 3);
+ 		break;
+-
+-	default:
+-		return -EINVAL;
+ 	}
+ 
+ 	pix_fmt->width = width;
+@@ -169,7 +177,6 @@ int rpivid_prepare_dst_format(struct v4l
+ 	pix_fmt->plane_fmt[0].bytesperline = bytesperline;
+ 	pix_fmt->plane_fmt[0].sizeimage = sizeimage;
+ 	pix_fmt->num_planes = 1;
+-	return 0;
+ }
+ 
+ static int rpivid_querycap(struct file *file, void *priv,
+@@ -260,14 +267,13 @@ static u32 pixelformat_from_sps(const st
+ {
+ 	u32 pf = 0;
+ 
+-	// Use width 0 as a signifier of unsetness
+-	if (!is_sps_set(sps)) {
++	if (!is_sps_set(sps) || !rpivid_hevc_validate_sps(sps)) {
+ 		/* Treat this as an error? For now return both */
+ 		if (index == 0)
+ 			pf = V4L2_PIX_FMT_NV12_COL128;
+ 		else if (index == 1)
+ 			pf = V4L2_PIX_FMT_NV12_10_COL128;
+-	} else if (index == 0 && rpivid_hevc_validate_sps(sps)) {
++	} else if (index == 0) {
+ 		if (sps->bit_depth_luma_minus8 == 0)
+ 			pf = V4L2_PIX_FMT_NV12_COL128;
+ 		else if (sps->bit_depth_luma_minus8 == 2)
+@@ -282,11 +288,14 @@ rpivid_hevc_default_dst_fmt(struct rpivi
+ {
+ 	const struct v4l2_ctrl_hevc_sps * const sps =
+ 		rpivid_find_control_data(ctx, V4L2_CID_MPEG_VIDEO_HEVC_SPS);
+-	struct v4l2_pix_format_mplane pix_fmt = {
+-		.width = sps->pic_width_in_luma_samples,
+-		.height = sps->pic_height_in_luma_samples,
+-		.pixelformat = pixelformat_from_sps(sps, 0)
+-	};
++	struct v4l2_pix_format_mplane pix_fmt;
++
++	memset(&pix_fmt, 0, sizeof(pix_fmt));
++	if (is_sps_set(sps)) {
++		pix_fmt.width = sps->pic_width_in_luma_samples;
++		pix_fmt.height = sps->pic_height_in_luma_samples;
++		pix_fmt.pixelformat = pixelformat_from_sps(sps, 0);
++	}
+ 
+ 	rpivid_prepare_dst_format(&pix_fmt);
+ 	return pix_fmt;
+@@ -315,14 +324,23 @@ static int rpivid_enum_fmt_vid_cap(struc
+ 	return 0;
+ }
+ 
++/*
++ * get dst format - sets it to default if otherwise unset
++ * returns a pointer to the struct as a convienience
++ */
++static struct v4l2_pix_format_mplane *get_dst_fmt(struct rpivid_ctx *const ctx)
++{
++	if (!ctx->dst_fmt_set)
++		ctx->dst_fmt = rpivid_hevc_default_dst_fmt(ctx);
++	return &ctx->dst_fmt;
++}
++
+ static int rpivid_g_fmt_vid_cap(struct file *file, void *priv,
+ 				struct v4l2_format *f)
+ {
+ 	struct rpivid_ctx *ctx = rpivid_file2ctx(file);
+ 
+-	if (!ctx->dst_fmt_set)
+-		ctx->dst_fmt = rpivid_hevc_default_dst_fmt(ctx);
+-	f->fmt.pix_mp = ctx->dst_fmt;
++	f->fmt.pix_mp = *get_dst_fmt(ctx);
+ 	return 0;
+ }
+ 
+@@ -358,31 +376,20 @@ static int rpivid_try_fmt_vid_cap(struct
+ 			break;
+ 	}
+ 
+-	// If we can't use requested fmt then set to default
+-	if (pixelformat == 0) {
+-		pixelformat = pixelformat_from_sps(sps, 0);
+-		// If we don't have a default then give up
+-		if (pixelformat == 0)
+-			return -EINVAL;
+-	}
+-
+ 	// We don't have any way of finding out colourspace so believe
+ 	// anything we are told - take anything set in src as a default
+ 	if (f->fmt.pix_mp.colorspace == V4L2_COLORSPACE_DEFAULT)
+ 		copy_color(&f->fmt.pix_mp, &ctx->src_fmt);
+ 
+ 	f->fmt.pix_mp.pixelformat = pixelformat;
+-	return rpivid_prepare_dst_format(&f->fmt.pix_mp);
++	rpivid_prepare_dst_format(&f->fmt.pix_mp);
++	return 0;
+ }
+ 
+ static int rpivid_try_fmt_vid_out(struct file *file, void *priv,
+ 				  struct v4l2_format *f)
+ {
+-	if (rpivid_prepare_src_format(&f->fmt.pix_mp)) {
+-		// Set default src format
+-		f->fmt.pix_mp.pixelformat = RPIVID_SRC_PIXELFORMAT_DEFAULT;
+-		rpivid_prepare_src_format(&f->fmt.pix_mp);
+-	}
++	rpivid_prepare_src_format(&f->fmt.pix_mp);
+ 	return 0;
+ }
+ 
+@@ -474,7 +481,7 @@ static int rpivid_queue_setup(struct vb2
+ 	if (V4L2_TYPE_IS_OUTPUT(vq->type))
+ 		pix_fmt = &ctx->src_fmt;
+ 	else
+-		pix_fmt = &ctx->dst_fmt;
++		pix_fmt = get_dst_fmt(ctx);
+ 
+ 	if (*nplanes) {
+ 		if (sizes[0] < pix_fmt->plane_fmt[0].sizeimage)
+--- a/drivers/staging/media/rpivid/rpivid_video.h
++++ b/drivers/staging/media/rpivid/rpivid_video.h
+@@ -28,7 +28,6 @@ int rpivid_queue_init(void *priv, struct
+ size_t rpivid_bit_buf_size(unsigned int w, unsigned int h, unsigned int bits_minus8);
+ size_t rpivid_round_up_size(const size_t x);
+ 
+-int rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt);
+-int rpivid_prepare_dst_format(struct v4l2_pix_format_mplane *pix_fmt);
++void rpivid_prepare_src_format(struct v4l2_pix_format_mplane *pix_fmt);
+ 
+ #endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0500-net-phy-lan87xx-Allow-more-time-for-link-detect.patch b/target/linux/bcm27xx/patches-5.15/950-0500-net-phy-lan87xx-Allow-more-time-for-link-detect.patch
new file mode 100644
index 0000000000..b0890c01cf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0500-net-phy-lan87xx-Allow-more-time-for-link-detect.patch
@@ -0,0 +1,38 @@
+From eb860f6a2dee9a4c94a7101c1d43194b95fdbc8d Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 22 Sep 2021 15:38:13 +0100
+Subject: [PATCH] net: phy: lan87xx: Allow more time for link detect
+
+With EDPWRDOWN set in idle, it must be cleared before checking for
+ENERGYON going high, indicating that a link is being established.
+The existing code allows 640ms for ENERGYON to go high, but on
+Raspberry Pis that appears not to be enough, causing link detection
+to fail.
+
+Increase the polling timeout to 1500ms - with a polling interval of
+10ms it shouldn't cause unnecessary delays.
+
+See: https://github.com/raspberrypi/linux/issues/4393
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/net/phy/smsc.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/phy/smsc.c
++++ b/drivers/net/phy/smsc.c
+@@ -228,12 +228,12 @@ static int lan87xx_read_status(struct ph
+ 		if (rc < 0)
+ 			return rc;
+ 
+-		/* Wait max 640 ms to detect energy and the timeout is not
++		/* Wait max 1500 ms to detect energy and the timeout is not
+ 		 * an actual error.
+ 		 */
+ 		read_poll_timeout(phy_read, rc,
+ 				  rc & MII_LAN83C185_ENERGYON || rc < 0,
+-				  10000, 640000, true, phydev,
++				  10000, 1500000, true, phydev,
+ 				  MII_LAN83C185_CTRL_STATUS);
+ 		if (rc < 0)
+ 			return rc;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0501-media-rpivid-Remove-unused-ctx-state-variable-and-de.patch b/target/linux/bcm27xx/patches-5.15/950-0501-media-rpivid-Remove-unused-ctx-state-variable-and-de.patch
new file mode 100644
index 0000000000..440e666c50
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0501-media-rpivid-Remove-unused-ctx-state-variable-and-de.patch
@@ -0,0 +1,37 @@
+From f42c5003bb6d755516058e1be86945858f54cca7 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Wed, 22 Sep 2021 18:57:19 +0100
+Subject: [PATCH] media: rpivid: Remove unused ctx state variable and
+ defines
+
+Remove unused ctx state tracking variable and associated defines.
+Their presence implies they might be used, but they aren't.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid.h | 7 -------
+ 1 file changed, 7 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -82,12 +82,6 @@ typedef void (*rpivid_irq_callback)(stru
+ struct rpivid_q_aux;
+ #define RPIVID_AUX_ENT_COUNT VB2_MAX_FRAME
+ 
+-
+-#define RPIVID_CTX_STATE_STOPPED	0	/* stream_off */
+-#define RPIVID_CTX_STATE_STREAM_ON	1	/* decoding */
+-#define RPIVID_CTX_STATE_STREAM_STOP	2	/* in stream_off */
+-#define RPIVID_CTX_STATE_STREAM_ERR	3	/* stream_on but broken */
+-
+ struct rpivid_ctx {
+ 	struct v4l2_fh			fh;
+ 	struct rpivid_dev		*dev;
+@@ -96,7 +90,6 @@ struct rpivid_ctx {
+ 	struct v4l2_pix_format_mplane	dst_fmt;
+ 	int dst_fmt_set;
+ 
+-	atomic_t 			stream_state;
+ 	struct clk_request		*clk_req;
+ 	int 				src_stream_on;
+ 	int 				dst_stream_on;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0502-media-rpivid-Ensure-IRQs-have-completed-before-unini.patch b/target/linux/bcm27xx/patches-5.15/950-0502-media-rpivid-Ensure-IRQs-have-completed-before-unini.patch
new file mode 100644
index 0000000000..25081e269b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0502-media-rpivid-Ensure-IRQs-have-completed-before-unini.patch
@@ -0,0 +1,100 @@
+From de6caac0f49de31d79b487ac1a998f0cfafdd5af Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Wed, 22 Sep 2021 19:05:30 +0100
+Subject: [PATCH] media: rpivid: Ensure IRQs have completed before
+ uniniting context
+
+Before uniniting the decode context sync with the IRQ queues to ensure
+that decode no longer has any buffers in use.  This fixes a problem that
+manifested as ffmpeg leaking CMA buffers when it did a stream off on
+OUTPUT before CAPTURE, though in reality it was probably much more
+dangerous than that.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid_h265.c | 58 ++++++++++++++++++++--
+ 1 file changed, 53 insertions(+), 5 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_h265.c
++++ b/drivers/staging/media/rpivid/rpivid_h265.c
+@@ -2387,12 +2387,50 @@ static void dec_state_delete(struct rpiv
+ 	kfree(s);
+ }
+ 
+-static void rpivid_h265_stop(struct rpivid_ctx *ctx)
++struct irq_sync {
++	atomic_t done;
++	wait_queue_head_t wq;
++	struct rpivid_hw_irq_ent irq_ent;
++};
++
++static void phase2_sync_claimed(struct rpivid_dev *const dev, void *v)
+ {
+-	struct rpivid_dev *const dev = ctx->dev;
+-	unsigned int i;
++	struct irq_sync *const sync = v;
+ 
+-	v4l2_info(&dev->v4l2_dev, "%s\n", __func__);
++	atomic_set(&sync->done, 1);
++	wake_up(&sync->wq);
++}
++
++static void phase1_sync_claimed(struct rpivid_dev *const dev, void *v)
++{
++	struct irq_sync *const sync = v;
++
++	rpivid_hw_irq_active1_enable_claim(dev, 1);
++	rpivid_hw_irq_active2_claim(dev, &sync->irq_ent, phase2_sync_claimed, sync);
++}
++
++/* Sync with IRQ operations
++ *
++ * Claims phase1 and phase2 in turn and waits for the phase2 claim so any
++ * pending IRQ ops will have completed by the time this returns
++ *
++ * phase1 has counted enables so must reenable once claimed
++ * phase2 has unlimited enables
++ */
++static void irq_sync(struct rpivid_dev *const dev)
++{
++	struct irq_sync sync;
++
++	atomic_set(&sync.done, 0);
++	init_waitqueue_head(&sync.wq);
++
++	rpivid_hw_irq_active1_claim(dev, &sync.irq_ent, phase1_sync_claimed, &sync);
++	wait_event(sync.wq, atomic_read(&sync.done));
++}
++
++static void h265_ctx_uninit(struct rpivid_dev *const dev, struct rpivid_ctx *ctx)
++{
++	unsigned int i;
+ 
+ 	dec_env_uninit(ctx);
+ 	dec_state_delete(ctx);
+@@ -2409,6 +2447,16 @@ static void rpivid_h265_stop(struct rpiv
+ 		gptr_free(dev, ctx->coeff_bufs + i);
+ }
+ 
++static void rpivid_h265_stop(struct rpivid_ctx *ctx)
++{
++	struct rpivid_dev *const dev = ctx->dev;
++
++	v4l2_info(&dev->v4l2_dev, "%s\n", __func__);
++
++	irq_sync(dev);
++	h265_ctx_uninit(dev, ctx);
++}
++
+ static int rpivid_h265_start(struct rpivid_ctx *ctx)
+ {
+ 	struct rpivid_dev *const dev = ctx->dev;
+@@ -2470,7 +2518,7 @@ static int rpivid_h265_start(struct rpiv
+ 	return 0;
+ 
+ fail:
+-	rpivid_h265_stop(ctx);
++	h265_ctx_uninit(dev, ctx);
+ 	return -ENOMEM;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0503-staging-bcm2835-codec-Allow-decode-res-changed-befor.patch b/target/linux/bcm27xx/patches-5.15/950-0503-staging-bcm2835-codec-Allow-decode-res-changed-befor.patch
new file mode 100644
index 0000000000..e375dcbeb3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0503-staging-bcm2835-codec-Allow-decode-res-changed-befor.patch
@@ -0,0 +1,238 @@
+From 6eded7dd8bcf00c6c4f354cd2edfaabc8e82e8b7 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 9 Oct 2020 10:40:27 +0100
+Subject: [PATCH] staging: bcm2835-codec: Allow decode res changed
+ before STREAMON(CAPTURE)
+
+The V4L2 stateful video decoder API requires that you can STREAMON
+on only the OUTPUT queue, feed in buffers, and wait for the
+SOURCE_CHANGE event.
+This requires that we enable the MMAL output port at the same time
+as the input port, because the output port is the one that creates
+the SOURCE_CHANGED event.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 137 +++++++++++++++---
+ 1 file changed, 117 insertions(+), 20 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1498,6 +1498,7 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 	struct vb2_queue *vq;
+ 	struct vchiq_mmal_port *port;
+ 	bool update_capture_port = false;
++	bool reenable_port = false;
+ 	int ret;
+ 
+ 	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Setting format for type %d, wxh: %dx%d, fmt: %08x, size %u\n",
+@@ -1575,6 +1576,24 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 	if (!port)
+ 		return 0;
+ 
++	if (port->enabled) {
++		/*
++		 * This should only ever happen with DECODE and the MMAL output
++		 * port that has been enabled for resolution changed events.
++		 * In this case no buffers have been allocated or sent to the
++		 * component, so warn on that.
++		 */
++		WARN_ON(ctx->dev->role != DECODE ||
++			f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
++			atomic_read(&port->buffers_with_vpu));
++
++		ret = vchiq_mmal_port_disable(ctx->dev->instance, port);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Error disabling port update buffer count, ret %d\n",
++				 __func__, ret);
++		reenable_port = true;
++	}
++
+ 	setup_mmal_port_format(ctx, q_data, port);
+ 	ret = vchiq_mmal_port_set_format(ctx->dev->instance, port);
+ 	if (ret) {
+@@ -1589,6 +1608,14 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 			 port->minimum_buffer.size);
+ 	}
+ 
++	if (reenable_port) {
++		ret = vchiq_mmal_port_enable(ctx->dev->instance,
++					     port,
++					     op_buffer_cb);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling o/p port, ret %d\n",
++				 __func__, ret);
++	}
+ 	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Set format for type %d, wxh: %dx%d, fmt: %08x, size %u\n",
+ 		 f->type, q_data->crop_width, q_data->height,
+ 		 q_data->fmt->fourcc, q_data->sizeimage);
+@@ -2467,9 +2494,11 @@ static int bcm2835_codec_create_componen
+ 
+ 	setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_SRC],
+ 			       &ctx->component->input[0]);
++	ctx->component->input[0].cb_ctx = ctx;
+ 
+ 	setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_DST],
+ 			       &ctx->component->output[0]);
++	ctx->component->output[0].cb_ctx = ctx;
+ 
+ 	ret = vchiq_mmal_port_set_format(dev->instance,
+ 					 &ctx->component->input[0]);
+@@ -2724,6 +2753,24 @@ static void bcm2835_codec_buffer_cleanup
+ 	bcm2835_codec_mmal_buf_cleanup(&buf->mmal);
+ }
+ 
++static void bcm2835_codec_flush_buffers(struct bcm2835_codec_ctx *ctx,
++					struct vchiq_mmal_port *port)
++{
++	int ret;
++
++	while (atomic_read(&port->buffers_with_vpu)) {
++		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Waiting for buffers to be returned - %d outstanding\n",
++			 __func__, atomic_read(&port->buffers_with_vpu));
++		ret = wait_for_completion_timeout(&ctx->frame_cmplt,
++						  COMPLETE_TIMEOUT);
++		if (ret <= 0) {
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Timeout waiting for buffers to be returned - %d outstanding\n",
++				 __func__,
++				 atomic_read(&port->buffers_with_vpu));
++			break;
++		}
++	}
++}
+ static int bcm2835_codec_start_streaming(struct vb2_queue *q,
+ 					 unsigned int count)
+ {
+@@ -2731,7 +2778,7 @@ static int bcm2835_codec_start_streaming
+ 	struct bcm2835_codec_dev *dev = ctx->dev;
+ 	struct bcm2835_codec_q_data *q_data = get_q_data(ctx, q->type);
+ 	struct vchiq_mmal_port *port = get_port_data(ctx, q->type);
+-	int ret;
++	int ret = 0;
+ 
+ 	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: type: %d count %d\n",
+ 		 __func__, q->type, count);
+@@ -2746,6 +2793,34 @@ static int bcm2835_codec_start_streaming
+ 		ctx->component_enabled = true;
+ 	}
+ 
++	if (port->enabled) {
++		unsigned int num_buffers;
++
++		init_completion(&ctx->frame_cmplt);
++
++		/*
++		 * This should only ever happen with DECODE and the MMAL output
++		 * port that has been enabled for resolution changed events.
++		 * In this case no buffers have been allocated or sent to the
++		 * component, so warn on that.
++		 */
++		WARN_ON(ctx->dev->role != DECODE);
++		WARN_ON(q->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
++		WARN_ON(atomic_read(&port->buffers_with_vpu));
++
++		/*
++		 * Disable will reread the port format, so retain buffer count.
++		 */
++		num_buffers = port->current_buffer.num;
++
++		ret = vchiq_mmal_port_disable(dev->instance, port);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Error disabling port update buffer count, ret %d\n",
++				 __func__, ret);
++		bcm2835_codec_flush_buffers(ctx, port);
++		port->current_buffer.num = num_buffers;
++	}
++
+ 	if (count < port->minimum_buffer.num)
+ 		count = port->minimum_buffer.num;
+ 
+@@ -2760,6 +2835,22 @@ static int bcm2835_codec_start_streaming
+ 				 __func__, ret);
+ 	}
+ 
++	if (dev->role == DECODE &&
++	    q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
++	    !ctx->component->output[0].enabled) {
++		/*
++		 * Decode needs to enable the MMAL output/V4L2 CAPTURE
++		 * port at this point too so that we have everything
++		 * set up for dynamic resolution changes.
++		 */
++		ret = vchiq_mmal_port_enable(dev->instance,
++					     &ctx->component->output[0],
++					     op_buffer_cb);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling o/p port, ret %d\n",
++				 __func__, ret);
++	}
++
+ 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ 		/*
+ 		 * Create the EOS buffer.
+@@ -2771,7 +2862,6 @@ static int bcm2835_codec_start_streaming
+ 				      &q_data->eos_buffer.mmal);
+ 		q_data->eos_buffer_in_use = false;
+ 
+-		port->cb_ctx = ctx;
+ 		ret = vchiq_mmal_port_enable(dev->instance,
+ 					     port,
+ 					     ip_buffer_cb);
+@@ -2779,14 +2869,17 @@ static int bcm2835_codec_start_streaming
+ 			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling i/p port, ret %d\n",
+ 				 __func__, ret);
+ 	} else {
+-		port->cb_ctx = ctx;
+-		ret = vchiq_mmal_port_enable(dev->instance,
+-					     port,
+-					     op_buffer_cb);
+-		if (ret)
+-			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling o/p port, ret %d\n",
+-				 __func__, ret);
++		if (!port->enabled) {
++			ret = vchiq_mmal_port_enable(dev->instance,
++						     port,
++						     op_buffer_cb);
++			if (ret)
++				v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling o/p port, ret %d\n",
++					 __func__, ret);
++		}
+ 	}
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Done, ret %d\n",
++		 __func__, ret);
+ 	return ret;
+ }
+ 
+@@ -2825,17 +2918,21 @@ static void bcm2835_codec_stop_streaming
+ 			 __func__, V4L2_TYPE_IS_OUTPUT(q->type) ? "i/p" : "o/p",
+ 			 ret);
+ 
+-	while (atomic_read(&port->buffers_with_vpu)) {
+-		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Waiting for buffers to be returned - %d outstanding\n",
+-			 __func__, atomic_read(&port->buffers_with_vpu));
+-		ret = wait_for_completion_timeout(&ctx->frame_cmplt,
+-						  COMPLETE_TIMEOUT);
+-		if (ret <= 0) {
+-			v4l2_err(&ctx->dev->v4l2_dev, "%s: Timeout waiting for buffers to be returned - %d outstanding\n",
+-				 __func__,
+-				 atomic_read(&port->buffers_with_vpu));
+-			break;
+-		}
++	bcm2835_codec_flush_buffers(ctx, port);
++
++	if (dev->role == DECODE &&
++	    q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
++	    ctx->component->input[0].enabled) {
++		/*
++		 * For decode we need to keep the MMAL output port enabled for
++		 * resolution changed events whenever the input is enabled.
++		 */
++		ret = vchiq_mmal_port_enable(dev->instance,
++					     &ctx->component->output[0],
++					     op_buffer_cb);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling o/p port, ret %d\n",
++				 __func__, ret);
+ 	}
+ 
+ 	/* If both ports disabled, then disable the component */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0504-staging-bcm2835-codec-Do-not-send-buffers-to-the-VPU.patch b/target/linux/bcm27xx/patches-5.15/950-0504-staging-bcm2835-codec-Do-not-send-buffers-to-the-VPU.patch
new file mode 100644
index 0000000000..89fac78738
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0504-staging-bcm2835-codec-Do-not-send-buffers-to-the-VPU.patch
@@ -0,0 +1,94 @@
+From def9aa1e5f2e29d29b493c22fd98e1c0af018d99 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Sep 2021 17:44:19 +0100
+Subject: [PATCH] staging/bcm2835-codec: Do not send buffers to the VPU
+ unless streaming
+
+With video decode we now enable both input and output ports on
+the component. This means that buffers will get passed to the VPU
+earlier than desired if they are queued befoer STREAMON.
+
+Check that the queue is streaming before sending buffers to the VPU.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 64 +++++++++++--------
+ 1 file changed, 38 insertions(+), 26 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1244,35 +1244,47 @@ static void device_run(void *priv)
+ 
+ 	v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: off we go\n", __func__);
+ 
+-	src_buf = v4l2_m2m_buf_remove(&ctx->fh.m2m_ctx->out_q_ctx);
+-	if (src_buf) {
+-		m2m = container_of(src_buf, struct v4l2_m2m_buffer, vb);
+-		src_m2m_buf = container_of(m2m, struct m2m_mmal_buffer, m2m);
+-		vb2_to_mmal_buffer(src_m2m_buf, src_buf);
+-
+-		ret = vchiq_mmal_submit_buffer(dev->instance,
+-					       &ctx->component->input[0],
+-					       &src_m2m_buf->mmal);
+-		v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: Submitted ip buffer len %lu, pts %llu, flags %04x\n",
+-			 __func__, src_m2m_buf->mmal.length,
+-			 src_m2m_buf->mmal.pts, src_m2m_buf->mmal.mmal_flags);
+-		if (ret)
+-			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed submitting ip buffer\n",
+-				 __func__);
++	if (ctx->fh.m2m_ctx->out_q_ctx.q.streaming) {
++		src_buf = v4l2_m2m_buf_remove(&ctx->fh.m2m_ctx->out_q_ctx);
++		if (src_buf) {
++			m2m = container_of(src_buf, struct v4l2_m2m_buffer, vb);
++			src_m2m_buf = container_of(m2m, struct m2m_mmal_buffer,
++						   m2m);
++			vb2_to_mmal_buffer(src_m2m_buf, src_buf);
++
++			ret = vchiq_mmal_submit_buffer(dev->instance,
++						       &ctx->component->input[0],
++						       &src_m2m_buf->mmal);
++			v4l2_dbg(3, debug, &ctx->dev->v4l2_dev,
++				 "%s: Submitted ip buffer len %lu, pts %llu, flags %04x\n",
++				 __func__, src_m2m_buf->mmal.length,
++				 src_m2m_buf->mmal.pts,
++				 src_m2m_buf->mmal.mmal_flags);
++			if (ret)
++				v4l2_err(&ctx->dev->v4l2_dev,
++					 "%s: Failed submitting ip buffer\n",
++					 __func__);
++		}
+ 	}
+ 
+-	dst_buf = v4l2_m2m_buf_remove(&ctx->fh.m2m_ctx->cap_q_ctx);
+-	if (dst_buf) {
+-		m2m = container_of(dst_buf, struct v4l2_m2m_buffer, vb);
+-		dst_m2m_buf = container_of(m2m, struct m2m_mmal_buffer, m2m);
+-		vb2_to_mmal_buffer(dst_m2m_buf, dst_buf);
+-
+-		ret = vchiq_mmal_submit_buffer(dev->instance,
+-					       &ctx->component->output[0],
+-					       &dst_m2m_buf->mmal);
+-		if (ret)
+-			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed submitting op buffer\n",
+-				 __func__);
++	if (ctx->fh.m2m_ctx->cap_q_ctx.q.streaming) {
++		dst_buf = v4l2_m2m_buf_remove(&ctx->fh.m2m_ctx->cap_q_ctx);
++		if (dst_buf) {
++			m2m = container_of(dst_buf, struct v4l2_m2m_buffer, vb);
++			dst_m2m_buf = container_of(m2m, struct m2m_mmal_buffer,
++						   m2m);
++			vb2_to_mmal_buffer(dst_m2m_buf, dst_buf);
++
++			v4l2_dbg(3, debug, &ctx->dev->v4l2_dev,
++				 "%s: Submitted op buffer\n", __func__);
++			ret = vchiq_mmal_submit_buffer(dev->instance,
++						       &ctx->component->output[0],
++						       &dst_m2m_buf->mmal);
++			if (ret)
++				v4l2_err(&ctx->dev->v4l2_dev,
++					 "%s: Failed submitting op buffer\n",
++					 __func__);
++		}
+ 	}
+ 
+ 	v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: Submitted src %p, dst %p\n",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0505-staging-mmal-vchiq-Rationalise-included-headers.patch b/target/linux/bcm27xx/patches-5.15/950-0505-staging-mmal-vchiq-Rationalise-included-headers.patch
new file mode 100644
index 0000000000..cb7634614a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0505-staging-mmal-vchiq-Rationalise-included-headers.patch
@@ -0,0 +1,36 @@
+From 2e454c397b0b27a59dfc13d428a82a8098fa1bfb Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Sep 2021 17:49:41 +0100
+Subject: [PATCH] staging/mmal-vchiq: Rationalise included headers
+
+The list of includes was slightly over generic, and wasn't
+in alphabetical order. Clean it up.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 9 ++++-----
+ 1 file changed, 4 insertions(+), 5 deletions(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -15,16 +15,15 @@
+ 
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+ 
++#include <linux/completion.h>
+ #include <linux/errno.h>
+ #include <linux/kernel.h>
++#include <linux/mm.h>
+ #include <linux/module.h>
+ #include <linux/mutex.h>
+-#include <linux/mm.h>
+-#include <linux/slab.h>
+-#include <linux/completion.h>
+-#include <linux/vmalloc.h>
+ #include <linux/raspberrypi/vchiq.h>
+-#include <media/videobuf2-vmalloc.h>
++#include <linux/vmalloc.h>
++#include <media/videobuf2-v4l2.h>
+ 
+ #include "mmal-common.h"
+ #include "mmal-parameters.h"
diff --git a/target/linux/bcm27xx/patches-5.15/950-0506-staging-bcm2835-codec-Format-changed-should-trigger-.patch b/target/linux/bcm27xx/patches-5.15/950-0506-staging-bcm2835-codec-Format-changed-should-trigger-.patch
new file mode 100644
index 0000000000..a2f3c8471d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0506-staging-bcm2835-codec-Format-changed-should-trigger-.patch
@@ -0,0 +1,43 @@
+From e3feb9db3003d5461be4c186c12225120af3883c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 16 Sep 2021 16:32:53 +0100
+Subject: [PATCH] staging: bcm2835-codec: Format changed should trigger
+ drain
+
+When a format changed event occurs, the spec says that it
+triggers an implicit drain, and that needs to be signalled
+via -EPIPE.
+
+For BCM2835, the format changed event happens at the point
+the format change occurs, so no further buffers exist from
+before the resolution changed point. We therefore signal the
+last buffer immediately.
+We don't have a V4L2 available to us at this point, so set
+the videobuf2 queue last_buffer_dequeued flag directly.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1005,6 +1005,7 @@ static void handle_fmt_changed(struct bc
+ 		(struct mmal_msg_event_format_changed *)mmal_buf->buffer;
+ 	struct mmal_parameter_video_interlace_type interlace;
+ 	int interlace_size = sizeof(interlace);
++	struct vb2_queue *vq;
+ 	int ret;
+ 
+ 	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Format changed: buff size min %u, rec %u, buff num min %u, rec %u\n",
+@@ -1074,6 +1075,10 @@ static void handle_fmt_changed(struct bc
+ 		q_data->field = V4L2_FIELD_NONE;
+ 	}
+ 
++	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
++	if (vq->streaming)
++		vq->last_buffer_dequeued = true;
++
+ 	queue_res_chg_event(ctx);
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0507-staging-bcm2835-codec-Signal-the-firmware-to-stop-on.patch b/target/linux/bcm27xx/patches-5.15/950-0507-staging-bcm2835-codec-Signal-the-firmware-to-stop-on.patch
new file mode 100644
index 0000000000..0d9188a1a1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0507-staging-bcm2835-codec-Signal-the-firmware-to-stop-on.patch
@@ -0,0 +1,48 @@
+From 672e3f61cf8bfd8eb578e19a87bc1ce4187cd546 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 16 Sep 2021 16:39:07 +0100
+Subject: [PATCH] staging: bcm2835-codec: Signal the firmware to stop
+ on all changes
+
+The firmware defaults to not stopping video decode if only the
+pixel aspect ratio or colourspace change. V4L2 requires us
+to stop decoding on any change, therefore tell the firmware
+of the desire for this alternate behaviour.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c   | 10 ++++++++++
+ .../staging/vc04_services/vchiq-mmal/mmal-parameters.h |  3 +++
+ 2 files changed, 13 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -2483,6 +2483,16 @@ static int bcm2835_codec_create_componen
+ 					      MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
+ 					      &enable,
+ 					      sizeof(enable));
++		/*
++		 * Enable firmware option to stop on colourspace and pixel
++		 * aspect ratio changed
++		 */
++		enable = 1;
++		vchiq_mmal_port_parameter_set(dev->instance,
++					      &ctx->component->control,
++					      MMAL_PARAMETER_VIDEO_STOP_ON_PAR_COLOUR_CHANGE,
++					      &enable,
++					      sizeof(enable));
+ 	} else if (dev->role == DEINTERLACE) {
+ 		/* Select the default deinterlace algorithm. */
+ 		int half_framerate = 0;
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -682,6 +682,9 @@ enum mmal_parameter_video_type {
+ 
+ 	/**< Take a @ref MMAL_PARAMETER_BOOLEAN_T */
+ 	MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
++
++	/**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_VIDEO_STOP_ON_PAR_COLOUR_CHANGE,
+ };
+ 
+ /** Valid mirror modes */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0508-staging-mmal-vchiq-Add-module-parameter-to-enable-lo.patch b/target/linux/bcm27xx/patches-5.15/950-0508-staging-mmal-vchiq-Add-module-parameter-to-enable-lo.patch
new file mode 100644
index 0000000000..7c9ef95955
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0508-staging-mmal-vchiq-Add-module-parameter-to-enable-lo.patch
@@ -0,0 +1,324 @@
+From 7a46088760f8891e6790a98b82efc1eb386c0d80 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Sep 2021 17:54:11 +0100
+Subject: [PATCH] staging/mmal-vchiq: Add module parameter to enable
+ logging.
+
+Adds a module parameter "debug" to enable various logging levels.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../vc04_services/vchiq-mmal/mmal-vchiq.c     | 156 ++++++++++--------
+ 1 file changed, 85 insertions(+), 71 deletions(-)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -31,6 +31,17 @@
+ #include "mmal-msg.h"
+ 
+ #include "vc-sm-cma/vc_sm_knl.h"
++
++#define pr_dbg_lvl(__level, __debug, __fmt, __arg...)		\
++	do {							\
++		if (__debug >= (__level))			\
++			printk(KERN_DEBUG __fmt, ##__arg);	\
++	} while (0)
++
++static unsigned int debug;
++module_param(debug, uint, 0644);
++MODULE_PARM_DESC(debug, "activates debug info (0-3)");
++
+ /*
+  * maximum number of components supported.
+  * This matches the maximum permitted by default on the VPU
+@@ -381,7 +392,8 @@ buffer_from_host(struct vchiq_mmal_insta
+ 	if (!port->enabled)
+ 		return -EINVAL;
+ 
+-	pr_debug("instance:%u buffer:%p\n", instance->service_handle, buf);
++	pr_dbg_lvl(3, debug, "instance:%u buffer:%p\n",
++		   instance->service_handle, buf);
+ 
+ 	/* get context */
+ 	if (!buf->msg_context) {
+@@ -549,11 +561,11 @@ static void event_to_host_cb(struct vchi
+ 		msg_context->u.bulk.pts = MMAL_TIME_UNKNOWN;
+ 		msg_context->u.bulk.cmd = msg->u.event_to_host.cmd;
+ 
+-		pr_debug("event component:%u port type:%d num:%d cmd:0x%x length:%d\n",
+-			 msg->u.event_to_host.client_component,
+-			 msg->u.event_to_host.port_type,
+-			 msg->u.event_to_host.port_num,
+-			 msg->u.event_to_host.cmd, msg->u.event_to_host.length);
++		pr_dbg_lvl(3, debug, "event component:%u port type:%d num:%d cmd:0x%x length:%d\n",
++			   msg->u.event_to_host.client_component,
++			   msg->u.event_to_host.port_type,
++			   msg->u.event_to_host.port_num,
++			   msg->u.event_to_host.cmd, msg->u.event_to_host.length);
+ 	}
+ 
+ 	schedule_work(&msg_context->u.bulk.work);
+@@ -566,8 +578,8 @@ static void buffer_to_host_cb(struct vch
+ 	struct mmal_msg_context *msg_context;
+ 	u32 handle;
+ 
+-	pr_debug("%s: instance:%p msg:%p msg_len:%d\n",
+-		 __func__, instance, msg, msg_len);
++	pr_dbg_lvl(3, debug, "%s: instance:%p msg:%p msg_len:%d\n",
++		   __func__, instance, msg, msg_len);
+ 
+ 	if (msg->u.buffer_from_host.drvbuf.magic == MMAL_MAGIC) {
+ 		handle = msg->u.buffer_from_host.drvbuf.client_context;
+@@ -837,42 +849,43 @@ static int send_synchronous_mmal_msg(str
+ 
+ static void dump_port_info(struct vchiq_mmal_port *port)
+ {
+-	pr_debug("port handle:0x%x enabled:%d\n", port->handle, port->enabled);
++	pr_dbg_lvl(3, debug, "port handle:0x%x enabled:%d\n", port->handle,
++		   port->enabled);
+ 
+-	pr_debug("buffer minimum num:%d size:%d align:%d\n",
+-		 port->minimum_buffer.num,
+-		 port->minimum_buffer.size, port->minimum_buffer.alignment);
+-
+-	pr_debug("buffer recommended num:%d size:%d align:%d\n",
+-		 port->recommended_buffer.num,
+-		 port->recommended_buffer.size,
+-		 port->recommended_buffer.alignment);
+-
+-	pr_debug("buffer current values num:%d size:%d align:%d\n",
+-		 port->current_buffer.num,
+-		 port->current_buffer.size, port->current_buffer.alignment);
+-
+-	pr_debug("elementary stream: type:%d encoding:0x%x variant:0x%x\n",
+-		 port->format.type,
+-		 port->format.encoding, port->format.encoding_variant);
++	pr_dbg_lvl(3, debug, "buffer minimum num:%d size:%d align:%d\n",
++		   port->minimum_buffer.num,
++		   port->minimum_buffer.size, port->minimum_buffer.alignment);
++
++	pr_dbg_lvl(3, debug, "buffer recommended num:%d size:%d align:%d\n",
++		   port->recommended_buffer.num,
++		   port->recommended_buffer.size,
++		   port->recommended_buffer.alignment);
++
++	pr_dbg_lvl(3, debug, "buffer current values num:%d size:%d align:%d\n",
++		   port->current_buffer.num,
++		   port->current_buffer.size, port->current_buffer.alignment);
++
++	pr_dbg_lvl(3, debug, "elementary stream: type:%d encoding:0x%x variant:0x%x\n",
++		   port->format.type,
++		   port->format.encoding, port->format.encoding_variant);
+ 
+-	pr_debug("		    bitrate:%d flags:0x%x\n",
+-		 port->format.bitrate, port->format.flags);
++	pr_dbg_lvl(3, debug, "		    bitrate:%d flags:0x%x\n",
++		   port->format.bitrate, port->format.flags);
+ 
+ 	if (port->format.type == MMAL_ES_TYPE_VIDEO) {
+-		pr_debug
+-		    ("es video format: width:%d height:%d colourspace:0x%x\n",
+-		     port->es.video.width, port->es.video.height,
+-		     port->es.video.color_space);
+-
+-		pr_debug("		 : crop xywh %d,%d,%d,%d\n",
+-			 port->es.video.crop.x,
+-			 port->es.video.crop.y,
+-			 port->es.video.crop.width, port->es.video.crop.height);
+-		pr_debug("		 : framerate %d/%d  aspect %d/%d\n",
+-			 port->es.video.frame_rate.num,
+-			 port->es.video.frame_rate.den,
+-			 port->es.video.par.num, port->es.video.par.den);
++		pr_dbg_lvl(3, debug,
++			   "es video format: width:%d height:%d colourspace:0x%x\n",
++			   port->es.video.width, port->es.video.height,
++			   port->es.video.color_space);
++
++		pr_dbg_lvl(3, debug, "		 : crop xywh %d,%d,%d,%d\n",
++			   port->es.video.crop.x,
++			   port->es.video.crop.y,
++			   port->es.video.crop.width, port->es.video.crop.height);
++		pr_dbg_lvl(3, debug, "		 : framerate %d/%d  aspect %d/%d\n",
++			   port->es.video.frame_rate.num,
++			   port->es.video.frame_rate.den,
++			   port->es.video.par.num, port->es.video.par.den);
+ 	}
+ }
+ 
+@@ -903,7 +916,7 @@ static int port_info_set(struct vchiq_mm
+ 	struct mmal_msg *rmsg;
+ 	struct vchiq_header *rmsg_handle;
+ 
+-	pr_debug("setting port info port %p\n", port);
++	pr_dbg_lvl(1, debug, "setting port info port %p\n", port);
+ 	if (!port)
+ 		return -1;
+ 	dump_port_info(port);
+@@ -946,8 +959,8 @@ static int port_info_set(struct vchiq_mm
+ 	/* return operation status */
+ 	ret = -rmsg->u.port_info_get_reply.status;
+ 
+-	pr_debug("%s:result:%d component:0x%x port:%d\n", __func__, ret,
+-		 port->component->handle, port->handle);
++	pr_dbg_lvl(1, debug, "%s:result:%d component:0x%x port:%d\n", __func__,
++		   ret, port->component->handle, port->handle);
+ 
+ release_msg:
+ 	vchiq_release_message(instance->service_handle, rmsg_handle);
+@@ -1037,13 +1050,13 @@ static int port_info_get(struct vchiq_mm
+ 	       rmsg->u.port_info_get_reply.extradata,
+ 	       port->format.extradata_size);
+ 
+-	pr_debug("received port info\n");
++	pr_dbg_lvl(1, debug, "received port info\n");
+ 	dump_port_info(port);
+ 
+ release_msg:
+ 
+-	pr_debug("%s:result:%d component:0x%x port:%d\n",
+-		 __func__, ret, port->component->handle, port->handle);
++	pr_dbg_lvl(1, debug, "%s:result:%d component:0x%x port:%d\n",
++		   __func__, ret, port->component->handle, port->handle);
+ 
+ 	vchiq_release_message(instance->service_handle, rmsg_handle);
+ 
+@@ -1088,9 +1101,9 @@ static int create_component(struct vchiq
+ 	component->outputs = rmsg->u.component_create_reply.output_num;
+ 	component->clocks = rmsg->u.component_create_reply.clock_num;
+ 
+-	pr_debug("Component handle:0x%x in:%d out:%d clock:%d\n",
+-		 component->handle,
+-		 component->inputs, component->outputs, component->clocks);
++	pr_dbg_lvl(2, debug, "Component handle:0x%x in:%d out:%d clock:%d\n",
++		   component->handle,
++		   component->inputs, component->outputs, component->clocks);
+ 
+ release_msg:
+ 	vchiq_release_message(instance->service_handle, rmsg_handle);
+@@ -1259,10 +1272,9 @@ static int port_action_port(struct vchiq
+ 
+ 	ret = -rmsg->u.port_action_reply.status;
+ 
+-	pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d)\n",
+-		 __func__,
+-		 ret, port->component->handle, port->handle,
+-		 port_action_type_names[action_type], action_type);
++	pr_dbg_lvl(2, debug, "%s:result:%d component:0x%x port:%d action:%s(%d)\n",
++		   __func__, ret, port->component->handle, port->handle,
++		   port_action_type_names[action_type], action_type);
+ 
+ release_msg:
+ 	vchiq_release_message(instance->service_handle, rmsg_handle);
+@@ -1306,11 +1318,11 @@ static int port_action_handle(struct vch
+ 
+ 	ret = -rmsg->u.port_action_reply.status;
+ 
+-	pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d) connect component:0x%x connect port:%d\n",
+-		 __func__,
+-		 ret, port->component->handle, port->handle,
+-		 port_action_type_names[action_type],
+-		 action_type, connect_component_handle, connect_port_handle);
++	pr_dbg_lvl(2, debug,
++		   "%s:result:%d component:0x%x port:%d action:%s(%d) connect component:0x%x connect port:%d\n",
++		   __func__, ret, port->component->handle, port->handle,
++		   port_action_type_names[action_type],
++		   action_type, connect_component_handle, connect_port_handle);
+ 
+ release_msg:
+ 	vchiq_release_message(instance->service_handle, rmsg_handle);
+@@ -1349,9 +1361,9 @@ static int port_parameter_set(struct vch
+ 
+ 	ret = -rmsg->u.port_parameter_set_reply.status;
+ 
+-	pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n",
+-		 __func__,
+-		 ret, port->component->handle, port->handle, parameter_id);
++	pr_dbg_lvl(1, debug, "%s:result:%d component:0x%x port:%d parameter:%d\n",
++		   __func__, ret, port->component->handle, port->handle,
++		   parameter_id);
+ 
+ release_msg:
+ 	vchiq_release_message(instance->service_handle, rmsg_handle);
+@@ -1409,8 +1421,9 @@ static int port_parameter_get(struct vch
+ 	/* Always report the size of the returned parameter to the caller */
+ 	*value_size = rmsg->u.port_parameter_get_reply.size;
+ 
+-	pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n", __func__,
+-		 ret, port->component->handle, port->handle, parameter_id);
++	pr_dbg_lvl(1, debug, "%s:result:%d component:0x%x port:%d parameter:%d\n",
++		   __func__, ret, port->component->handle, port->handle,
++		   parameter_id);
+ 
+ release_msg:
+ 	vchiq_release_message(instance->service_handle, rmsg_handle);
+@@ -1667,7 +1680,7 @@ int vchiq_mmal_port_connect_tunnel(struc
+ 	if (!dst) {
+ 		/* do not make new connection */
+ 		ret = 0;
+-		pr_debug("not making new connection\n");
++		pr_dbg_lvl(3, debug, "not making new connection\n");
+ 		goto release_unlock;
+ 	}
+ 
+@@ -1685,14 +1698,14 @@ int vchiq_mmal_port_connect_tunnel(struc
+ 	/* set new format */
+ 	ret = port_info_set(instance, dst);
+ 	if (ret) {
+-		pr_debug("setting port info failed\n");
++		pr_dbg_lvl(1, debug, "setting port info failed\n");
+ 		goto release_unlock;
+ 	}
+ 
+ 	/* read what has actually been set */
+ 	ret = port_info_get(instance, dst);
+ 	if (ret) {
+-		pr_debug("read back port info failed\n");
++		pr_dbg_lvl(1, debug, "read back port info failed\n");
+ 		goto release_unlock;
+ 	}
+ 
+@@ -1701,9 +1714,9 @@ int vchiq_mmal_port_connect_tunnel(struc
+ 				 MMAL_MSG_PORT_ACTION_TYPE_CONNECT,
+ 				 dst->component->handle, dst->handle);
+ 	if (ret < 0) {
+-		pr_debug("connecting port %d:%d to %d:%d failed\n",
+-			 src->component->handle, src->handle,
+-			 dst->component->handle, dst->handle);
++		pr_dbg_lvl(2, debug, "connecting port %d:%d to %d:%d failed\n",
++			   src->component->handle, src->handle,
++			   dst->component->handle, dst->handle);
+ 		goto release_unlock;
+ 	}
+ 	src->connected = dst;
+@@ -1728,7 +1741,8 @@ int vchiq_mmal_submit_buffer(struct vchi
+ 	 * videobuf2 won't let us have the dmabuf there.
+ 	 */
+ 	if (port->zero_copy && buffer->dma_buf && !buffer->vcsm_handle) {
+-		pr_debug("%s: import dmabuf %p\n", __func__, buffer->dma_buf);
++		pr_dbg_lvl(2, debug, "%s: import dmabuf %p\n",
++			   __func__, buffer->dma_buf);
+ 		ret = vc_sm_cma_import_dmabuf(buffer->dma_buf,
+ 					      &buffer->vcsm_handle);
+ 		if (ret) {
+@@ -1744,8 +1758,8 @@ int vchiq_mmal_submit_buffer(struct vchi
+ 			vc_sm_cma_free(buffer->vcsm_handle);
+ 			return ret;
+ 		}
+-		pr_debug("%s: import dmabuf %p - got vc handle %08X\n",
+-			 __func__, buffer->dma_buf, buffer->vc_handle);
++		pr_dbg_lvl(2, debug, "%s: import dmabuf %p - got vc handle %08X\n",
++			   __func__, buffer->dma_buf, buffer->vc_handle);
+ 	}
+ 
+ 	ret = buffer_from_host(instance, port, buffer);
+@@ -1784,8 +1798,8 @@ int mmal_vchi_buffer_cleanup(struct mmal
+ 	if (buf->vcsm_handle) {
+ 		int ret;
+ 
+-		pr_debug("%s: vc_sm_cma_free on handle %p\n", __func__,
+-			 buf->vcsm_handle);
++		pr_dbg_lvl(2, debug, "%s: vc_sm_cma_free on handle %p\n", __func__,
++			   buf->vcsm_handle);
+ 		ret = vc_sm_cma_free(buf->vcsm_handle);
+ 		if (ret)
+ 			pr_err("%s: vcsm_free failed, ret %d\n", __func__, ret);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0509-staging-bcm2835-codec-Queue-flushed-buffers-instead-.patch b/target/linux/bcm27xx/patches-5.15/950-0509-staging-bcm2835-codec-Queue-flushed-buffers-instead-.patch
new file mode 100644
index 0000000000..abcbe84fc4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0509-staging-bcm2835-codec-Queue-flushed-buffers-instead-.patch
@@ -0,0 +1,28 @@
+From 24da14f2d745114eddf9d1d7e1bfde90d1c0c35c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 16 Sep 2021 16:46:58 +0100
+Subject: [PATCH] staging: bcm2835-codec: Queue flushed buffers instead
+ of completing
+
+When a buffer is returned on a port that is disabled, return it
+to the videobuf2 QUEUED state instead of DONE which returns it
+to the client.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c  | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -926,7 +926,9 @@ static void ip_buffer_cb(struct vchiq_mm
+ 
+ 	v4l2_dbg(3, debug, &ctx->dev->v4l2_dev, "%s: no error. Return buffer %p\n",
+ 		 __func__, &buf->m2m.vb.vb2_buf);
+-	vb2_buffer_done(&buf->m2m.vb.vb2_buf, VB2_BUF_STATE_DONE);
++	vb2_buffer_done(&buf->m2m.vb.vb2_buf,
++			port->enabled ? VB2_BUF_STATE_DONE :
++					VB2_BUF_STATE_QUEUED);
+ 
+ 	ctx->num_ip_buffers++;
+ 	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: done %d input buffers\n",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0510-staging-mmal-vchiq-Reset-buffers_with_vpu-on-port_en.patch b/target/linux/bcm27xx/patches-5.15/950-0510-staging-mmal-vchiq-Reset-buffers_with_vpu-on-port_en.patch
new file mode 100644
index 0000000000..e41f96c717
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0510-staging-mmal-vchiq-Reset-buffers_with_vpu-on-port_en.patch
@@ -0,0 +1,31 @@
+From 346d7cf505387721ec8b2e678eada08be2179a0b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 21 Sep 2021 17:17:57 +0100
+Subject: [PATCH] staging: mmal-vchiq: Reset buffers_with_vpu on
+ port_enable
+
+Should we go through the timeout failure case with port_disable
+not returning all buffers for whatever reason, the
+buffers_with_vpu counter gets left at a non-zero value, which
+will cause reference counting issues should the instance be
+reused.
+
+Reset the count when the port is enabled again, but before
+any buffers have been sent to the VPU.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+@@ -1500,6 +1500,8 @@ static int port_enable(struct vchiq_mmal
+ 
+ 	port->enabled = 1;
+ 
++	atomic_set(&port->buffers_with_vpu, 0);
++
+ 	if (port->buffer_cb) {
+ 		/* send buffer headers to videocore */
+ 		hdr_count = 1;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0511-staging-bcm2835_codec-Correct-flushing-code-for-refc.patch b/target/linux/bcm27xx/patches-5.15/950-0511-staging-bcm2835_codec-Correct-flushing-code-for-refc.patch
new file mode 100644
index 0000000000..febdfcc5dc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0511-staging-bcm2835_codec-Correct-flushing-code-for-refc.patch
@@ -0,0 +1,92 @@
+From cd850cb03a564c948db4db8cac672284c55cefc3 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 22 Sep 2021 16:42:49 +0100
+Subject: [PATCH] staging: bcm2835_codec: Correct flushing code for
+ refcounting
+
+Completions don't reference count, so setting the completion
+on the first buffer returned and then not reinitialising it
+means that the flush function doesn't behave as intended.
+
+Signal the completion when the last buffer is returned.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 20 ++++++++++++++-----
+ 1 file changed, 15 insertions(+), 5 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -934,7 +934,7 @@ static void ip_buffer_cb(struct vchiq_mm
+ 	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: done %d input buffers\n",
+ 		 __func__, ctx->num_ip_buffers);
+ 
+-	if (!port->enabled)
++	if (!port->enabled && atomic_read(&port->buffers_with_vpu))
+ 		complete(&ctx->frame_cmplt);
+ }
+ 
+@@ -1135,7 +1135,8 @@ static void op_buffer_cb(struct vchiq_mm
+ 			 __func__, mmal_buf->mmal_flags);
+ 		if (!(mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_EOS)) {
+ 			vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_QUEUED);
+-			if (!port->enabled)
++			if (!port->enabled &&
++			    atomic_read(&port->buffers_with_vpu))
+ 				complete(&ctx->frame_cmplt);
+ 			return;
+ 		}
+@@ -1178,7 +1179,7 @@ static void op_buffer_cb(struct vchiq_mm
+ 	v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: done %d output buffers\n",
+ 		 __func__, ctx->num_op_buffers);
+ 
+-	if (!port->enabled)
++	if (!port->enabled && atomic_read(&port->buffers_with_vpu))
+ 		complete(&ctx->frame_cmplt);
+ }
+ 
+@@ -1596,6 +1597,8 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 		return 0;
+ 
+ 	if (port->enabled) {
++		unsigned int num_buffers;
++
+ 		/*
+ 		 * This should only ever happen with DECODE and the MMAL output
+ 		 * port that has been enabled for resolution changed events.
+@@ -1606,10 +1609,18 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 			f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
+ 			atomic_read(&port->buffers_with_vpu));
+ 
++		/*
++		 * Disable will reread the port format, so retain buffer count.
++		 */
++		num_buffers = port->current_buffer.num;
++
+ 		ret = vchiq_mmal_port_disable(ctx->dev->instance, port);
+ 		if (ret)
+ 			v4l2_err(&ctx->dev->v4l2_dev, "%s: Error disabling port update buffer count, ret %d\n",
+ 				 __func__, ret);
++
++		port->current_buffer.num = num_buffers;
++
+ 		reenable_port = true;
+ 	}
+ 
+@@ -2787,7 +2798,7 @@ static void bcm2835_codec_flush_buffers(
+ {
+ 	int ret;
+ 
+-	while (atomic_read(&port->buffers_with_vpu)) {
++	if (atomic_read(&port->buffers_with_vpu)) {
+ 		v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: Waiting for buffers to be returned - %d outstanding\n",
+ 			 __func__, atomic_read(&port->buffers_with_vpu));
+ 		ret = wait_for_completion_timeout(&ctx->frame_cmplt,
+@@ -2796,7 +2807,6 @@ static void bcm2835_codec_flush_buffers(
+ 			v4l2_err(&ctx->dev->v4l2_dev, "%s: Timeout waiting for buffers to be returned - %d outstanding\n",
+ 				 __func__,
+ 				 atomic_read(&port->buffers_with_vpu));
+-			break;
+ 		}
+ 	}
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0512-staging-bcm2835-codec-Ensure-all-ctrls-are-set-on-st.patch b/target/linux/bcm27xx/patches-5.15/950-0512-staging-bcm2835-codec-Ensure-all-ctrls-are-set-on-st.patch
new file mode 100644
index 0000000000..97da4b03ad
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0512-staging-bcm2835-codec-Ensure-all-ctrls-are-set-on-st.patch
@@ -0,0 +1,111 @@
+From df5051094f02f536291e84f2820e9680cc98687d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 20 Sep 2021 15:00:51 +0100
+Subject: [PATCH] staging: bcm2835-codec: Ensure all ctrls are set on
+ streamon
+
+Currently the code was only setting some controls from
+bcm2835_codec_set_ctrls, but it's simpler to use
+v4l2_ctrl_handler_setup to avoid forgetting to adding new
+controls to the list.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 51 +++++++------------
+ 1 file changed, 19 insertions(+), 32 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -2437,33 +2437,6 @@ static const struct v4l2_ioctl_ops bcm28
+ 	.vidioc_enum_framesizes = vidioc_enum_framesizes,
+ };
+ 
+-static int bcm2835_codec_set_ctrls(struct bcm2835_codec_ctx *ctx)
+-{
+-	/*
+-	 * Query the control handler for the value of the various controls and
+-	 * set them.
+-	 */
+-	const u32 control_ids[] = {
+-		V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
+-		V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER,
+-		V4L2_CID_MPEG_VIDEO_HEADER_MODE,
+-		V4L2_CID_MPEG_VIDEO_H264_I_PERIOD,
+-		V4L2_CID_MPEG_VIDEO_H264_LEVEL,
+-		V4L2_CID_MPEG_VIDEO_H264_PROFILE,
+-	};
+-	int i;
+-
+-	for (i = 0; i < ARRAY_SIZE(control_ids); i++) {
+-		struct v4l2_ctrl *ctrl;
+-
+-		ctrl = v4l2_ctrl_find(&ctx->hdl, control_ids[i]);
+-		if (ctrl)
+-			bcm2835_codec_s_ctrl(ctrl);
+-	}
+-
+-	return 0;
+-}
+-
+ static int bcm2835_codec_create_component(struct bcm2835_codec_ctx *ctx)
+ {
+ 	struct bcm2835_codec_dev *dev = ctx->dev;
+@@ -2567,9 +2540,6 @@ static int bcm2835_codec_create_componen
+ 				 ctx->q_data[V4L2_M2M_SRC].sizeimage,
+ 				 ctx->component->output[0].minimum_buffer.size);
+ 
+-		/* Now we have a component we can set all the ctrls */
+-		bcm2835_codec_set_ctrls(ctx);
+-
+ 		/* Enable SPS Timing header so framerate information is encoded
+ 		 * in the H264 header.
+ 		 */
+@@ -2598,6 +2568,10 @@ static int bcm2835_codec_create_componen
+ 				 ctx->q_data[V4L2_M2M_DST].sizeimage,
+ 				 ctx->component->output[0].minimum_buffer.size);
+ 	}
++
++	/* Now we have a component we can set all the ctrls */
++	ret = v4l2_ctrl_handler_setup(&ctx->hdl);
++
+ 	v4l2_dbg(2, debug, &dev->v4l2_dev, "%s: component created as %s\n",
+ 		 __func__, components[dev->role]);
+ 
+@@ -3099,7 +3073,9 @@ static int bcm2835_codec_open(struct fil
+ 	file->private_data = &ctx->fh;
+ 	ctx->dev = dev;
+ 	hdl = &ctx->hdl;
+-	if (dev->role == ENCODE) {
++	switch (dev->role) {
++	case ENCODE:
++	{
+ 		/* Encode controls */
+ 		v4l2_ctrl_handler_init(hdl, 9);
+ 
+@@ -3158,7 +3134,10 @@ static int bcm2835_codec_open(struct fil
+ 		}
+ 		ctx->fh.ctrl_handler = hdl;
+ 		v4l2_ctrl_handler_setup(hdl);
+-	} else if (dev->role == DECODE) {
++	}
++	break;
++	case DECODE:
++	{
+ 		v4l2_ctrl_handler_init(hdl, 1);
+ 
+ 		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
+@@ -3171,6 +3150,14 @@ static int bcm2835_codec_open(struct fil
+ 		ctx->fh.ctrl_handler = hdl;
+ 		v4l2_ctrl_handler_setup(hdl);
+ 	}
++	break;
++	case ISP:
++	case DEINTERLACE:
++	{
++		v4l2_ctrl_handler_init(hdl, 0);
++	}
++	break;
++	}
+ 
+ 	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0513-staging-bcm2835-codec-Add-support-for-H-V-Flips-to-I.patch b/target/linux/bcm27xx/patches-5.15/950-0513-staging-bcm2835-codec-Add-support-for-H-V-Flips-to-I.patch
new file mode 100644
index 0000000000..2a0380f5ed
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0513-staging-bcm2835-codec-Add-support-for-H-V-Flips-to-I.patch
@@ -0,0 +1,85 @@
+From 3df60f3d0615c011e91b7d6f39cb9123b2e96530 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 20 Sep 2021 14:37:17 +0100
+Subject: [PATCH] staging: bcm2835-codec: Add support for H&V Flips to
+ ISP
+
+The ISP can do H & V flips whilst resizing or converting
+the image, so expose that via V4L2_CID_[H|V]FLIP.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 48 +++++++++++++++++++
+ 1 file changed, 48 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -679,6 +679,9 @@ struct bcm2835_codec_ctx {
+ 	enum v4l2_xfer_func	xfer_func;
+ 	enum v4l2_quantization	quant;
+ 
++	int hflip;
++	int vflip;
++
+ 	/* Source and destination queue data */
+ 	struct bcm2835_codec_q_data   q_data[2];
+ 	s32  bitrate;
+@@ -2202,6 +2205,34 @@ static int bcm2835_codec_s_ctrl(struct v
+ 						    sizeof(mmal_bool));
+ 		break;
+ 	}
++	case V4L2_CID_HFLIP:
++	case V4L2_CID_VFLIP: {
++		u32 u32_value;
++
++		if (ctrl->id == V4L2_CID_HFLIP)
++			ctx->hflip = ctrl->val;
++		else
++			ctx->vflip = ctrl->val;
++
++		if (!ctx->component)
++			break;
++
++		if (ctx->hflip && ctx->vflip)
++			u32_value = MMAL_PARAM_MIRROR_BOTH;
++		else if (ctx->hflip)
++			u32_value = MMAL_PARAM_MIRROR_HORIZONTAL;
++		else if (ctx->vflip)
++			u32_value = MMAL_PARAM_MIRROR_VERTICAL;
++		else
++			u32_value = MMAL_PARAM_MIRROR_NONE;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->input[0],
++						    MMAL_PARAMETER_MIRROR,
++						    &u32_value,
++						    sizeof(u32_value));
++		break;
++	}
+ 
+ 	default:
+ 		v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
+@@ -3152,6 +3183,23 @@ static int bcm2835_codec_open(struct fil
+ 	}
+ 	break;
+ 	case ISP:
++	{
++		v4l2_ctrl_handler_init(hdl, 2);
++
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_HFLIP,
++				  1, 0, 1, 0);
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_VFLIP,
++				  1, 0, 1, 0);
++		if (hdl->error) {
++			rc = hdl->error;
++			goto free_ctrl_handler;
++		}
++		ctx->fh.ctrl_handler = hdl;
++		v4l2_ctrl_handler_setup(hdl);
++	}
++	break;
+ 	case DEINTERLACE:
+ 	{
+ 		v4l2_ctrl_handler_init(hdl, 0);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0514-overlays-add-support-for-the-MLX90640-thermal-camera.patch b/target/linux/bcm27xx/patches-5.15/950-0514-overlays-add-support-for-the-MLX90640-thermal-camera.patch
new file mode 100644
index 0000000000..1e9bf8eeaf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0514-overlays-add-support-for-the-MLX90640-thermal-camera.patch
@@ -0,0 +1,67 @@
+From 3fd6d30806724fa8b07ae625d828c49855c42fbe Mon Sep 17 00:00:00 2001
+From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+Date: Sun, 19 Sep 2021 13:30:43 +0200
+Subject: [PATCH] overlays: add support for the MLX90640 thermal camera
+
+This allows using the video-i2c camera driver with MLX90640 thermal
+infrared sensors, connected to Raspberry Pi. CONFIG_VIDEO_V4L2_I2C
+has to be selected to use the camera.
+
+Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             |  6 +++++
+ .../boot/dts/overlays/mlx90640-overlay.dts    | 22 +++++++++++++++++++
+ 3 files changed, 29 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/mlx90640-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -129,6 +129,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	midi-uart5.dtbo \
+ 	minipitft13.dtbo \
+ 	miniuart-bt.dtbo \
++	mlx90640.dtbo \
+ 	mmc.dtbo \
+ 	mpu6050.dtbo \
+ 	mz61581.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2152,6 +2152,12 @@ Params: krnbt                   Set to "
+                                 driver without need of hciattach/btattach
+ 
+ 
++Name:   mlx90640
++Info:   Overlay for i2c connected mlx90640 thermal camera
++Load:   dtoverlay=mlx90640
++Params: <None>
++
++
+ Name:   mmc
+ Info:   Selects the bcm2835-mmc SD/MMC driver, optionally with overclock
+ Load:   dtoverlay=mmc,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mlx90640-overlay.dts
+@@ -0,0 +1,22 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_arm>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++			clock-frequency = <400000>;
++
++			mlx90640: mlx90640@33 {
++				compatible = "melexis,mlx90640";
++				reg = <0x33>;
++				status = "okay";
++			};
++		};
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch
new file mode 100644
index 0000000000..15feadbe65
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0515-overlays-Add-generic-mcp2515-overlay.patch
@@ -0,0 +1,206 @@
+From 637535797f538a24a0ce2225185b24b14aa20d51 Mon Sep 17 00:00:00 2001
+From: GabyPCgeeK <GabyPCgeeK@users.noreply.github.com>
+Date: Mon, 27 Sep 2021 04:43:21 -0400
+Subject: [PATCH] overlays: Add generic mcp2515 overlay
+
+Can configure mcp2515 on spi0/1/2 without the need for multiple overlays.
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |  15 ++
+ .../arm/boot/dts/overlays/mcp2515-overlay.dts | 156 ++++++++++++++++++
+ 3 files changed, 172 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/mcp2515-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -113,6 +113,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	mbed-dac.dtbo \
+ 	mcp23017.dtbo \
+ 	mcp23s17.dtbo \
++	mcp2515.dtbo \
+ 	mcp2515-can0.dtbo \
+ 	mcp2515-can1.dtbo \
+ 	mcp251xfd.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1977,6 +1977,21 @@ Params: s08-spi<n>-<m>-present  4-bit in
+                                 or INTB output of MCP23S17 is connected.
+ 
+ 
++Name:   mcp2515
++Info:   Configures the MCP2515 CAN controller on spi0/1/2
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++Load:   dtoverlay=mcp2515,<param>=<val>
++Params: spi<n>-<m>              Configure device at spi<n>, cs<m>
++                                (boolean, required)
++
++        oscillator              Clock frequency for the CAN controller (Hz)
++
++        speed                   Maximum SPI frequence (Hz)
++
++        interrupt               GPIO for interrupt signal
++
++
+ Name:   mcp2515-can0
+ Info:   Configures the MCP2515 CAN controller on spi0.0
+ Load:   dtoverlay=mcp2515-can0,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mcp2515-overlay.dts
+@@ -0,0 +1,156 @@
++// SPDX-License-Identifier: (GPL-2.0 OR MIT)
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&spidev1>;
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@2 {
++		target-path = "spi1/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target-path = "spi1/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@4 {
++		target-path = "spi1/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@5 {
++		target-path = "spi2/spidev@0";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@6 {
++		target-path = "spi2/spidev@1";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@7 {
++		target-path = "spi2/spidev@2";
++		__dormant__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@8 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp2515_pins: mcp2515_pins {
++				brcm,pins = <25>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++
++	fragment@9 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp2515_osc: mcp2515-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <16000000>;
++			};
++		};
++	};
++
++	mcp2515_frag: fragment@10 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			mcp2515: mcp2515@0 {
++				compatible = "microchip,mcp2515";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp2515_pins>;
++				spi-max-frequency = <10000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp2515_osc>;
++			};
++		};
++	};
++
++	__overrides__ {
++		spi0-0 = <0>, "+0",
++			<&mcp2515_frag>, "target:0=", <&spi0>,
++			<&mcp2515>, "reg:0=0",
++			<&mcp2515_pins>, "name=mcp2515_spi0_0_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi0-0-osc";
++		spi0-1 = <0>, "+1",
++			<&mcp2515_frag>, "target:0=", <&spi0>,
++			<&mcp2515>, "reg:0=1",
++			<&mcp2515_pins>, "name=mcp2515_spi0_1_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi0-1-osc";
++		spi1-0 = <0>, "+2",
++			<&mcp2515_frag>, "target:0=", <&spi1>,
++			<&mcp2515>, "reg:0=0",
++			<&mcp2515_pins>, "name=mcp2515_spi1_0_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi1-0-osc";
++		spi1-1 = <0>, "+3",
++			<&mcp2515_frag>, "target:0=", <&spi1>,
++			<&mcp2515>, "reg:0=1",
++			<&mcp2515_pins>, "name=mcp2515_spi1_1_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi1-1-osc";
++		spi1-2 = <0>, "+4",
++			<&mcp2515_frag>, "target:0=", <&spi1>,
++			<&mcp2515>, "reg:0=2",
++			<&mcp2515_pins>, "name=mcp2515_spi1_2_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi1-2-osc";
++		spi2-0 = <0>, "+5",
++			<&mcp2515_frag>, "target:0=", <&spi2>,
++			<&mcp2515>, "reg:0=0",
++			<&mcp2515_pins>, "name=mcp2515_spi2_0_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi2-0-osc";
++		spi2-1 = <0>, "+6",
++			<&mcp2515_frag>, "target:0=", <&spi2>,
++			<&mcp2515>, "reg:0=1",
++			<&mcp2515_pins>, "name=mcp2515_spi2_1_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi2-1-osc";
++		spi2-2 = <0>, "+7",
++			<&mcp2515_frag>, "target:0=", <&spi2>,
++			<&mcp2515>, "reg:0=2",
++			<&mcp2515_pins>, "name=mcp2515_spi2_2_pins",
++			<&clk_mcp2515_osc>, "name=mcp2515-spi2-2-osc";
++		oscillator = <&clk_mcp2515_osc>, "clock-frequency:0";
++		speed = <&mcp2515>, "spi-max-frequency:0";
++		interrupt = <&mcp2515_pins>, "brcm,pins:0",
++			<&mcp2515>, "interrupts:0";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0516-regulator-rpi-panel-Remove-get_brightness-hook.patch b/target/linux/bcm27xx/patches-5.15/950-0516-regulator-rpi-panel-Remove-get_brightness-hook.patch
new file mode 100644
index 0000000000..81ce244665
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0516-regulator-rpi-panel-Remove-get_brightness-hook.patch
@@ -0,0 +1,54 @@
+From 7019ea2a7587700e366729872bdec56d54842c8c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 21 Sep 2021 15:32:50 +0100
+Subject: [PATCH] regulator: rpi-panel: Remove get_brightness hook
+
+The driver was implementing a get_brightness function that
+tried to read back the PWM setting of the display to report
+as the current brightness.
+The controller on the display does not support that, therefore
+we end up reporting a brightness of 0, and that confuses
+systemd's backlight service.
+
+Remove the hook so that the framework returns the current
+brightness automatically.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../regulator/rpi-panel-attiny-regulator.c    | 23 -------------------
+ 1 file changed, 23 deletions(-)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -207,31 +207,8 @@ static int attiny_update_status(struct b
+ 	return ret;
+ }
+ 
+-static int attiny_get_brightness(struct backlight_device *bl)
+-{
+-	struct attiny_lcd *state = bl_get_data(bl);
+-	struct regmap *regmap = state->regmap;
+-	int ret, brightness, i;
+-
+-	mutex_lock(&state->lock);
+-
+-	for (i = 0; i < 10; i++) {
+-		ret = regmap_read(regmap, REG_PWM, &brightness);
+-		if (!ret)
+-			break;
+-	}
+-
+-	mutex_unlock(&state->lock);
+-
+-	if (ret)
+-		return ret;
+-
+-	return brightness;
+-}
+-
+ static const struct backlight_ops attiny_bl = {
+ 	.update_status	= attiny_update_status,
+-	.get_brightness	= attiny_get_brightness,
+ };
+ 
+ static int attiny_gpio_get_direction(struct gpio_chip *gc, unsigned int off)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0517-bcm2835_smi_dev-Fix-handling-of-word-odd-lengths.patch b/target/linux/bcm27xx/patches-5.15/950-0517-bcm2835_smi_dev-Fix-handling-of-word-odd-lengths.patch
new file mode 100644
index 0000000000..b0055dfcf8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0517-bcm2835_smi_dev-Fix-handling-of-word-odd-lengths.patch
@@ -0,0 +1,91 @@
+From 0922abd923ec50f6cc41ded24485bd22c719c7bd Mon Sep 17 00:00:00 2001
+From: madimario <madimario@users.noreply.github.com>
+Date: Tue, 28 Sep 2021 04:20:06 -0400
+Subject: [PATCH] bcm2835_smi_dev: Fix handling of word-odd lengths
+
+The read and write functions did not use the correct pointer offset
+when dealing with an odd number of bytes after a DMA transfer. Also,
+only handle the remaining odd bytes if the DMA transfer completed
+successfully.
+
+Submitted-by: @madimario (GitHub)
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/char/broadcom/bcm2835_smi_dev.c | 21 ++++++++++++++-------
+ 1 file changed, 14 insertions(+), 7 deletions(-)
+
+--- a/drivers/char/broadcom/bcm2835_smi_dev.c
++++ b/drivers/char/broadcom/bcm2835_smi_dev.c
+@@ -191,6 +191,7 @@ bcm2835_read_file(struct file *f, char _
+ 		  size_t count, loff_t *offs)
+ {
+ 	int odd_bytes;
++	size_t count_check;
+ 
+ 	dev_dbg(inst->dev, "User reading %zu bytes from SMI.", count);
+ 	/* We don't want to DMA a number of bytes % 4 != 0 (32 bit FIFO) */
+@@ -199,6 +200,7 @@ bcm2835_read_file(struct file *f, char _
+ 	else
+ 		odd_bytes = count;
+ 	count -= odd_bytes;
++	count_check = count;
+ 	if (count) {
+ 		struct bcm2835_smi_bounce_info *bounce;
+ 
+@@ -209,15 +211,16 @@ bcm2835_read_file(struct file *f, char _
+ 			count = dma_bounce_user(DMA_DEV_TO_MEM, user_ptr,
+ 				count, bounce);
+ 	}
+-	if (odd_bytes) {
++	if (odd_bytes && (count == count_check)) {
+ 		/* Read from FIFO directly if not using DMA */
+ 		uint8_t buf[DMA_THRESHOLD_BYTES];
++		unsigned long bytes_not_transferred;
+ 
+ 		bcm2835_smi_read_buf(smi_inst, buf, odd_bytes);
+-		if (copy_to_user(user_ptr, buf, odd_bytes))
++		bytes_not_transferred = copy_to_user(user_ptr + count, buf, odd_bytes);
++		if (bytes_not_transferred)
+ 			dev_err(inst->dev, "copy_to_user() failed.");
+-		count += odd_bytes;
+-
++		count += odd_bytes - bytes_not_transferred;
+ 	}
+ 	return count;
+ }
+@@ -227,6 +230,7 @@ bcm2835_write_file(struct file *f, const
+ 		   size_t count, loff_t *offs)
+ {
+ 	int odd_bytes;
++	size_t count_check;
+ 
+ 	dev_dbg(inst->dev, "User writing %zu bytes to SMI.", count);
+ 	if (count > DMA_THRESHOLD_BYTES)
+@@ -234,6 +238,7 @@ bcm2835_write_file(struct file *f, const
+ 	else
+ 		odd_bytes = count;
+ 	count -= odd_bytes;
++	count_check = count;
+ 	if (count) {
+ 		struct bcm2835_smi_bounce_info *bounce;
+ 
+@@ -245,14 +250,16 @@ bcm2835_write_file(struct file *f, const
+ 				(char __user *)user_ptr,
+ 				count, bounce);
+ 	}
+-	if (odd_bytes) {
++	if (odd_bytes && (count == count_check)) {
+ 		uint8_t buf[DMA_THRESHOLD_BYTES];
++		unsigned long bytes_not_transferred;
+ 
+-		if (copy_from_user(buf, user_ptr, odd_bytes))
++		bytes_not_transferred = copy_from_user(buf, user_ptr + count, odd_bytes);
++		if (bytes_not_transferred)
+ 			dev_err(inst->dev, "copy_from_user() failed.");
+ 		else
+ 			bcm2835_smi_write_buf(smi_inst, buf, odd_bytes);
+-		count += odd_bytes;
++		count += odd_bytes - bytes_not_transferred;
+ 	}
+ 	return count;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0518-Revert-mmc-sdhci-iproc-Fix-vmmc-regulators-on-iProc.patch b/target/linux/bcm27xx/patches-5.15/950-0518-Revert-mmc-sdhci-iproc-Fix-vmmc-regulators-on-iProc.patch
new file mode 100644
index 0000000000..eab5502e7f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0518-Revert-mmc-sdhci-iproc-Fix-vmmc-regulators-on-iProc.patch
@@ -0,0 +1,45 @@
+From fa836dde1adf33d1c8f6caae9db365f06061b954 Mon Sep 17 00:00:00 2001
+From: Juerg Haefliger <juergh@canonical.com>
+Date: Wed, 29 Sep 2021 11:39:46 +0200
+Subject: [PATCH] Revert "mmc: sdhci-iproc: Fix vmmc regulators on
+ iProc"
+
+This reverts commit aed19399a01733dbad9be8bf026a4f7dd823b04f.
+
+Commit 6c92ae1e452f ("mmc: sdhci: Introduce sdhci_set_power_and_bus_voltage()")
+introduced a generic helper that does the same thing so use that instead in
+the following commit.
+
+Signed-off-by: Juerg Haefliger <juergh@canonical.com>
+---
+ drivers/mmc/host/sdhci-iproc.c | 12 ------------
+ 1 file changed, 12 deletions(-)
+
+--- a/drivers/mmc/host/sdhci-iproc.c
++++ b/drivers/mmc/host/sdhci-iproc.c
+@@ -173,17 +173,6 @@ static unsigned int sdhci_iproc_get_max_
+ 		return pltfm_host->clock;
+ }
+ 
+-static void sdhci_iproc_set_power(struct sdhci_host *host, unsigned char mode,
+-				  unsigned short vdd)
+-{
+-	if (!IS_ERR(host->mmc->supply.vmmc)) {
+-		struct mmc_host *mmc = host->mmc;
+-
+-		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
+-	}
+-	sdhci_set_power_noreg(host, mode, vdd);
+-}
+-
+ /*
+  * There is a known bug on BCM2711's SDHCI core integration where the
+  * controller will hang when the difference between the core clock and the bus
+@@ -218,7 +207,6 @@ static const struct sdhci_ops sdhci_ipro
+ 	.write_b = sdhci_iproc_writeb,
+ 	.set_clock = sdhci_set_clock,
+ 	.get_max_clock = sdhci_iproc_get_max_clock,
+-	.set_power = sdhci_iproc_set_power,
+ 	.set_bus_width = sdhci_set_bus_width,
+ 	.reset = sdhci_reset,
+ 	.set_uhs_signaling = sdhci_set_uhs_signaling,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch b/target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch
new file mode 100644
index 0000000000..15f225c8e6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0519-mmc-sdhci-iproc-Fix-vmmc-regulators-pre-bcm2711.patch
@@ -0,0 +1,28 @@
+From dc50e276ae888c06e2daf8549b85dd3ed1765115 Mon Sep 17 00:00:00 2001
+From: Juerg Haefliger <juergh@canonical.com>
+Date: Wed, 29 Sep 2021 11:42:23 +0200
+Subject: [PATCH] mmc: sdhci-iproc: Fix vmmc regulators (pre-bcm2711)
+
+The Linux support for controlling card power via regulators appears to
+be contentious. I would argue that the default behaviour is contrary to
+the SDHCI spec - turning off the power writes a reserved value to the
+SD Bus Voltage Select field of the Power Control Register, which
+seems to kill the Arasan/iProc controller - but fortunately there is a
+hook in sdhci_ops to override the behaviour.
+
+Signed-off-by: Juerg Haefliger <juergh@canonical.com>
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/mmc/host/sdhci-iproc.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/mmc/host/sdhci-iproc.c
++++ b/drivers/mmc/host/sdhci-iproc.c
+@@ -207,6 +207,7 @@ static const struct sdhci_ops sdhci_ipro
+ 	.write_b = sdhci_iproc_writeb,
+ 	.set_clock = sdhci_set_clock,
+ 	.get_max_clock = sdhci_iproc_get_max_clock,
++	.set_power = sdhci_set_power_and_bus_voltage,
+ 	.set_bus_width = sdhci_set_bus_width,
+ 	.reset = sdhci_reset,
+ 	.set_uhs_signaling = sdhci_set_uhs_signaling,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0520-dt-bindings-media-i2c-Add-IMX519-CMOS-sensor-binding.patch b/target/linux/bcm27xx/patches-5.15/950-0520-dt-bindings-media-i2c-Add-IMX519-CMOS-sensor-binding.patch
new file mode 100644
index 0000000000..8bbbfcb151
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0520-dt-bindings-media-i2c-Add-IMX519-CMOS-sensor-binding.patch
@@ -0,0 +1,149 @@
+From dea6a3f3a5c9b1fa6a5dc60eaeaeca487e07769b Mon Sep 17 00:00:00 2001
+From: Lee Jackson <info@arducam.com>
+Date: Fri, 27 Aug 2021 14:36:55 +0800
+Subject: [PATCH] dt-bindings: media: i2c: Add IMX519 CMOS sensor
+ binding
+
+Add YAML device tree binding for IMX519 CMOS image sensor, and
+the relevant MAINTAINERS entries.
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ .../devicetree/bindings/media/i2c/imx519.yaml | 113 ++++++++++++++++++
+ MAINTAINERS                                   |   8 ++
+ 2 files changed, 121 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/i2c/imx519.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/i2c/imx519.yaml
+@@ -0,0 +1,113 @@
++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/media/i2c/imx519.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Sony 1/2.5-Inch 16Mpixel CMOS Digital Image Sensor
++
++maintainers:
++  - Lee Jackson <info@arducam.com>
++
++description: |-
++  The Sony IMX519 is a 1/2.5-inch CMOS active pixel digital image sensor
++  with an active array size of 4656H x 3496V. It is programmable through
++  I2C interface. The I2C address is fixed to 0x1A as per sensor data sheet.
++  Image data is sent through MIPI CSI-2, which is configured as either 2 or
++  4 data lanes.
++
++properties:
++  compatible:
++    const: sony,imx519
++
++  reg:
++    description: I2C device address
++    maxItems: 1
++
++  clocks:
++    maxItems: 1
++
++  VDIG-supply:
++    description:
++      Digital I/O voltage supply, 1.05 volts
++
++  VANA-supply:
++    description:
++      Analog voltage supply, 2.8 volts
++
++  VDDL-supply:
++    description:
++      Digital core voltage supply, 1.8 volts
++
++  reset-gpios:
++    description: |-
++      Reference to the GPIO connected to the xclr pin, if any.
++      Must be released (set high) after all supplies and INCK are applied.
++
++  # See ../video-interfaces.txt for more details
++  port:
++    type: object
++    properties:
++      endpoint:
++        type: object
++        properties:
++          data-lanes:
++            description: |-
++              The sensor supports either two-lane, or four-lane operation.
++              For two-lane operation the property must be set to <1 2>.
++            items:
++              - const: 1
++              - const: 2
++
++          clock-noncontinuous:
++            type: boolean
++            description: |-
++              MIPI CSI-2 clock is non-continuous if this property is present,
++              otherwise it's continuous.
++
++          link-frequencies:
++            allOf:
++              - $ref: /schemas/types.yaml#/definitions/uint64-array
++            description:
++              Allowed data bus frequencies.
++
++        required:
++          - link-frequencies
++
++required:
++  - compatible
++  - reg
++  - clocks
++  - VANA-supply
++  - VDIG-supply
++  - VDDL-supply
++  - port
++
++additionalProperties: false
++
++examples:
++  - |
++    i2c0 {
++        #address-cells = <1>;
++        #size-cells = <0>;
++
++        imx519: sensor@1a {
++            compatible = "sony,imx519";
++            reg = <0x1a>;
++            clocks = <&imx519_clk>;
++            VANA-supply = <&imx519_vana>;   /* 2.8v */
++            VDIG-supply = <&imx519_vdig>;   /* 1.05v */
++            VDDL-supply = <&imx519_vddl>;   /* 1.8v */
++
++            port {
++                imx519_0: endpoint {
++                    remote-endpoint = <&csi1_ep>;
++                    data-lanes = <1 2>;
++                    clock-noncontinuous;
++                    link-frequencies = /bits/ 64 <493500000>;
++                };
++            };
++        };
++    };
++
++...
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -17532,6 +17532,14 @@ F:	Documentation/devicetree/bindings/med
+ F:	Documentation/devicetree/bindings/media/i2c/imx477.yaml
+ F:	drivers/media/i2c/imx477.c
+ 
++SONY IMX519 SENSOR DRIVER
++M:	Arducam Kernel Maintenance <info@arducam.com>
++L:	linux-media@vger.kernel.org
++S:	Maintained
++T:	git git://linuxtv.org/media_tree.git
++F:	Documentation/devicetree/bindings/media/i2c/imx519.yaml
++F:	drivers/media/i2c/imx519.c
++
+ SONY MEMORYSTICK SUBSYSTEM
+ M:	Maxim Levitsky <maximlevitsky@gmail.com>
+ M:	Alex Dubov <oakad@yahoo.com>
diff --git a/target/linux/bcm27xx/patches-5.15/950-0521-media-i2c-Add-driver-for-IMX519-sensor.patch b/target/linux/bcm27xx/patches-5.15/950-0521-media-i2c-Add-driver-for-IMX519-sensor.patch
new file mode 100644
index 0000000000..de891a00b5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0521-media-i2c-Add-driver-for-IMX519-sensor.patch
@@ -0,0 +1,2082 @@
+From b47705e22313bb8621e66f4596581f671e986225 Mon Sep 17 00:00:00 2001
+From: Lee Jackson <info@arducam.com>
+Date: Fri, 27 Aug 2021 13:48:52 +0800
+Subject: [PATCH] media: i2c: Add driver for IMX519 sensor
+
+Adds a driver for the 16MPix IMX519 CSI2 sensor.
+Whilst the sensor supports 2 or 4 CSI2 data lanes, this driver
+currently only supports 2 lanes.
+
+The following Bayer modes are currently available:
+
+4656x3496 10-bit @ 10fps
+3840x2160 10-bit (cropped) @ 21fps
+2328x1748 10-bit (binned) @ 30fps
+1920x1080 10-bit (cropped/binned) @ 60fps
+1280x720 10-bit (cropped/binned) @ 120fps
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ drivers/media/i2c/Kconfig  |   11 +
+ drivers/media/i2c/Makefile |    1 +
+ drivers/media/i2c/imx519.c | 2024 ++++++++++++++++++++++++++++++++++++
+ 3 files changed, 2036 insertions(+)
+ create mode 100644 drivers/media/i2c/imx519.c
+
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -894,6 +894,17 @@ config VIDEO_IMX412
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called imx412.
+ 
++config VIDEO_IMX519
++	tristate "Arducam IMX519 sensor support"
++	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
++	depends on MEDIA_CAMERA_SUPPORT
++	help
++	  This is a Video4Linux2 sensor driver for the Arducam
++	  IMX519 camera.
++
++	  To compile this driver as a module, choose M here: the
++	  module will be called IMX519.
++
+ config VIDEO_OV02A10
+ 	tristate "OmniVision OV02A10 sensor support"
+ 	depends on VIDEO_V4L2 && I2C
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -131,6 +131,7 @@ obj-$(CONFIG_VIDEO_IMX334)	+= imx334.o
+ obj-$(CONFIG_VIDEO_IMX335)	+= imx335.o
+ obj-$(CONFIG_VIDEO_IMX355)	+= imx355.o
+ obj-$(CONFIG_VIDEO_IMX412)	+= imx412.o
++obj-$(CONFIG_VIDEO_IMX519)	+= imx519.o
+ obj-$(CONFIG_VIDEO_MAX9286)	+= max9286.o
+ obj-$(CONFIG_VIDEO_MAX9271_LIB)	+= max9271.o
+ obj-$(CONFIG_VIDEO_RDACM20)	+= rdacm20.o
+--- /dev/null
++++ b/drivers/media/i2c/imx519.c
+@@ -0,0 +1,2024 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * A V4L2 driver for Sony IMX519 cameras.
++ * Copyright (C) 2021 Arducam Technology co., Ltd.
++ *
++ * Based on Sony IMX477 camera driver
++ * Copyright (C) 2020 Raspberry Pi (Trading) Ltd
++ */
++#include <asm/unaligned.h>
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/i2c.h>
++#include <linux/module.h>
++#include <linux/of_device.h>
++#include <linux/pm_runtime.h>
++#include <linux/regulator/consumer.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-fwnode.h>
++#include <media/v4l2-mediabus.h>
++
++#define IMX519_REG_VALUE_08BIT		1
++#define IMX519_REG_VALUE_16BIT		2
++
++/* Chip ID */
++#define IMX519_REG_CHIP_ID		0x0016
++#define IMX519_CHIP_ID			0x0519
++
++#define IMX519_REG_MODE_SELECT		0x0100
++#define IMX519_MODE_STANDBY		0x00
++#define IMX519_MODE_STREAMING		0x01
++
++#define IMX519_REG_ORIENTATION		0x101
++
++#define IMX519_XCLK_FREQ		24000000
++
++#define IMX519_DEFAULT_LINK_FREQ	493500000
++
++/* Pixel rate is fixed at 686MHz for all the modes */
++#define IMX519_PIXEL_RATE		686000000
++
++/* V_TIMING internal */
++#define IMX519_REG_FRAME_LENGTH		0x0340
++#define IMX519_FRAME_LENGTH_MAX		0xffdc
++
++/* Long exposure multiplier */
++#define IMX519_LONG_EXP_SHIFT_MAX	7
++#define IMX519_LONG_EXP_SHIFT_REG	0x3100
++
++/* Exposure control */
++#define IMX519_REG_EXPOSURE		0x0202
++#define IMX519_EXPOSURE_OFFSET		32
++#define IMX519_EXPOSURE_MIN		1
++#define IMX519_EXPOSURE_STEP		1
++#define IMX519_EXPOSURE_DEFAULT		0x3e8
++#define IMX519_EXPOSURE_MAX		(IMX519_FRAME_LENGTH_MAX - \
++					 IMX519_EXPOSURE_OFFSET)
++
++/* Analog gain control */
++#define IMX519_REG_ANALOG_GAIN		0x0204
++#define IMX519_ANA_GAIN_MIN		0
++#define IMX519_ANA_GAIN_MAX		960
++#define IMX519_ANA_GAIN_STEP		1
++#define IMX519_ANA_GAIN_DEFAULT		0x0
++
++/* Digital gain control */
++#define IMX519_REG_DIGITAL_GAIN		0x020e
++#define IMX519_DGTL_GAIN_MIN		0x0100
++#define IMX519_DGTL_GAIN_MAX		0xffff
++#define IMX519_DGTL_GAIN_DEFAULT	0x0100
++#define IMX519_DGTL_GAIN_STEP		1
++
++/* Test Pattern Control */
++#define IMX519_REG_TEST_PATTERN		0x0600
++#define IMX519_TEST_PATTERN_DISABLE	0
++#define IMX519_TEST_PATTERN_SOLID_COLOR	1
++#define IMX519_TEST_PATTERN_COLOR_BARS	2
++#define IMX519_TEST_PATTERN_GREY_COLOR	3
++#define IMX519_TEST_PATTERN_PN9		4
++
++/* Test pattern colour components */
++#define IMX519_REG_TEST_PATTERN_R	0x0602
++#define IMX519_REG_TEST_PATTERN_GR	0x0604
++#define IMX519_REG_TEST_PATTERN_B	0x0606
++#define IMX519_REG_TEST_PATTERN_GB	0x0608
++#define IMX519_TEST_PATTERN_COLOUR_MIN	0
++#define IMX519_TEST_PATTERN_COLOUR_MAX	0x0fff
++#define IMX519_TEST_PATTERN_COLOUR_STEP	1
++#define IMX519_TEST_PATTERN_R_DEFAULT	IMX519_TEST_PATTERN_COLOUR_MAX
++#define IMX519_TEST_PATTERN_GR_DEFAULT	0
++#define IMX519_TEST_PATTERN_B_DEFAULT	0
++#define IMX519_TEST_PATTERN_GB_DEFAULT	0
++
++/* IMX519 native and active pixel array size. */
++#define IMX519_NATIVE_WIDTH		4672U
++#define IMX519_NATIVE_HEIGHT		3648U
++#define IMX519_PIXEL_ARRAY_LEFT		8U
++#define IMX519_PIXEL_ARRAY_TOP		48U
++#define IMX519_PIXEL_ARRAY_WIDTH	4656U
++#define IMX519_PIXEL_ARRAY_HEIGHT	3496U
++
++struct imx519_reg {
++	u16 address;
++	u8 val;
++};
++
++struct imx519_reg_list {
++	unsigned int num_of_regs;
++	const struct imx519_reg *regs;
++};
++
++/* Mode : resolution and related config&values */
++struct imx519_mode {
++	/* Frame width */
++	unsigned int width;
++
++	/* Frame height */
++	unsigned int height;
++
++	/* H-timing in pixels */
++	unsigned int line_length_pix;
++
++	/* Analog crop rectangle. */
++	struct v4l2_rect crop;
++
++	/* Highest possible framerate. */
++	struct v4l2_fract timeperframe_min;
++
++	/* Default framerate. */
++	struct v4l2_fract timeperframe_default;
++
++	/* Default register values */
++	struct imx519_reg_list reg_list;
++};
++
++static const struct imx519_reg mode_common_regs[] = {
++	{0x0136, 0x18},
++	{0x0137, 0x00},
++	{0x3c7e, 0x01},
++	{0x3c7f, 0x07},
++	{0x3020, 0x00},
++	{0x3e35, 0x01},
++	{0x3f7f, 0x01},
++	{0x5609, 0x57},
++	{0x5613, 0x51},
++	{0x561f, 0x5e},
++	{0x5623, 0xd2},
++	{0x5637, 0x11},
++	{0x5657, 0x11},
++	{0x5659, 0x12},
++	{0x5733, 0x60},
++	{0x5905, 0x57},
++	{0x590f, 0x51},
++	{0x591b, 0x5e},
++	{0x591f, 0xd2},
++	{0x5933, 0x11},
++	{0x5953, 0x11},
++	{0x5955, 0x12},
++	{0x5a2f, 0x60},
++	{0x5a85, 0x57},
++	{0x5a8f, 0x51},
++	{0x5a9b, 0x5e},
++	{0x5a9f, 0xd2},
++	{0x5ab3, 0x11},
++	{0x5ad3, 0x11},
++	{0x5ad5, 0x12},
++	{0x5baf, 0x60},
++	{0x5c15, 0x2a},
++	{0x5c17, 0x80},
++	{0x5c19, 0x31},
++	{0x5c1b, 0x87},
++	{0x5c25, 0x25},
++	{0x5c27, 0x7b},
++	{0x5c29, 0x2a},
++	{0x5c2b, 0x80},
++	{0x5c2d, 0x31},
++	{0x5c2f, 0x87},
++	{0x5c35, 0x2b},
++	{0x5c37, 0x81},
++	{0x5c39, 0x31},
++	{0x5c3b, 0x87},
++	{0x5c45, 0x25},
++	{0x5c47, 0x7b},
++	{0x5c49, 0x2a},
++	{0x5c4b, 0x80},
++	{0x5c4d, 0x31},
++	{0x5c4f, 0x87},
++	{0x5c55, 0x2d},
++	{0x5c57, 0x83},
++	{0x5c59, 0x32},
++	{0x5c5b, 0x88},
++	{0x5c65, 0x29},
++	{0x5c67, 0x7f},
++	{0x5c69, 0x2e},
++	{0x5c6b, 0x84},
++	{0x5c6d, 0x32},
++	{0x5c6f, 0x88},
++	{0x5e69, 0x04},
++	{0x5e9d, 0x00},
++	{0x5f18, 0x10},
++	{0x5f1a, 0x0e},
++	{0x5f20, 0x12},
++	{0x5f22, 0x10},
++	{0x5f24, 0x0e},
++	{0x5f28, 0x10},
++	{0x5f2a, 0x0e},
++	{0x5f30, 0x12},
++	{0x5f32, 0x10},
++	{0x5f34, 0x0e},
++	{0x5f38, 0x0f},
++	{0x5f39, 0x0d},
++	{0x5f3c, 0x11},
++	{0x5f3d, 0x0f},
++	{0x5f3e, 0x0d},
++	{0x5f61, 0x07},
++	{0x5f64, 0x05},
++	{0x5f67, 0x03},
++	{0x5f6a, 0x03},
++	{0x5f6d, 0x07},
++	{0x5f70, 0x07},
++	{0x5f73, 0x05},
++	{0x5f76, 0x02},
++	{0x5f79, 0x07},
++	{0x5f7c, 0x07},
++	{0x5f7f, 0x07},
++	{0x5f82, 0x07},
++	{0x5f85, 0x03},
++	{0x5f88, 0x02},
++	{0x5f8b, 0x01},
++	{0x5f8e, 0x01},
++	{0x5f91, 0x04},
++	{0x5f94, 0x05},
++	{0x5f97, 0x02},
++	{0x5f9d, 0x07},
++	{0x5fa0, 0x07},
++	{0x5fa3, 0x07},
++	{0x5fa6, 0x07},
++	{0x5fa9, 0x03},
++	{0x5fac, 0x01},
++	{0x5faf, 0x01},
++	{0x5fb5, 0x03},
++	{0x5fb8, 0x02},
++	{0x5fbb, 0x01},
++	{0x5fc1, 0x07},
++	{0x5fc4, 0x07},
++	{0x5fc7, 0x07},
++	{0x5fd1, 0x00},
++	{0x6302, 0x79},
++	{0x6305, 0x78},
++	{0x6306, 0xa5},
++	{0x6308, 0x03},
++	{0x6309, 0x20},
++	{0x630b, 0x0a},
++	{0x630d, 0x48},
++	{0x630f, 0x06},
++	{0x6311, 0xa4},
++	{0x6313, 0x03},
++	{0x6314, 0x20},
++	{0x6316, 0x0a},
++	{0x6317, 0x31},
++	{0x6318, 0x4a},
++	{0x631a, 0x06},
++	{0x631b, 0x40},
++	{0x631c, 0xa4},
++	{0x631e, 0x03},
++	{0x631f, 0x20},
++	{0x6321, 0x0a},
++	{0x6323, 0x4a},
++	{0x6328, 0x80},
++	{0x6329, 0x01},
++	{0x632a, 0x30},
++	{0x632b, 0x02},
++	{0x632c, 0x20},
++	{0x632d, 0x02},
++	{0x632e, 0x30},
++	{0x6330, 0x60},
++	{0x6332, 0x90},
++	{0x6333, 0x01},
++	{0x6334, 0x30},
++	{0x6335, 0x02},
++	{0x6336, 0x20},
++	{0x6338, 0x80},
++	{0x633a, 0xa0},
++	{0x633b, 0x01},
++	{0x633c, 0x60},
++	{0x633d, 0x02},
++	{0x633e, 0x60},
++	{0x633f, 0x01},
++	{0x6340, 0x30},
++	{0x6341, 0x02},
++	{0x6342, 0x20},
++	{0x6343, 0x03},
++	{0x6344, 0x80},
++	{0x6345, 0x03},
++	{0x6346, 0x90},
++	{0x6348, 0xf0},
++	{0x6349, 0x01},
++	{0x634a, 0x20},
++	{0x634b, 0x02},
++	{0x634c, 0x10},
++	{0x634d, 0x03},
++	{0x634e, 0x60},
++	{0x6350, 0xa0},
++	{0x6351, 0x01},
++	{0x6352, 0x60},
++	{0x6353, 0x02},
++	{0x6354, 0x50},
++	{0x6355, 0x02},
++	{0x6356, 0x60},
++	{0x6357, 0x01},
++	{0x6358, 0x30},
++	{0x6359, 0x02},
++	{0x635a, 0x30},
++	{0x635b, 0x03},
++	{0x635c, 0x90},
++	{0x635f, 0x01},
++	{0x6360, 0x10},
++	{0x6361, 0x01},
++	{0x6362, 0x40},
++	{0x6363, 0x02},
++	{0x6364, 0x50},
++	{0x6368, 0x70},
++	{0x636a, 0xa0},
++	{0x636b, 0x01},
++	{0x636c, 0x50},
++	{0x637d, 0xe4},
++	{0x637e, 0xb4},
++	{0x638c, 0x8e},
++	{0x638d, 0x38},
++	{0x638e, 0xe3},
++	{0x638f, 0x4c},
++	{0x6390, 0x30},
++	{0x6391, 0xc3},
++	{0x6392, 0xae},
++	{0x6393, 0xba},
++	{0x6394, 0xeb},
++	{0x6395, 0x6e},
++	{0x6396, 0x34},
++	{0x6397, 0xe3},
++	{0x6398, 0xcf},
++	{0x6399, 0x3c},
++	{0x639a, 0xf3},
++	{0x639b, 0x0c},
++	{0x639c, 0x30},
++	{0x639d, 0xc1},
++	{0x63b9, 0xa3},
++	{0x63ba, 0xfe},
++	{0x7600, 0x01},
++	{0x79a0, 0x01},
++	{0x79a1, 0x01},
++	{0x79a2, 0x01},
++	{0x79a3, 0x01},
++	{0x79a4, 0x01},
++	{0x79a5, 0x20},
++	{0x79a9, 0x00},
++	{0x79aa, 0x01},
++	{0x79ad, 0x00},
++	{0x79af, 0x00},
++	{0x8173, 0x01},
++	{0x835c, 0x01},
++	{0x8a74, 0x01},
++	{0x8c1f, 0x00},
++	{0x8c27, 0x00},
++	{0x8c3b, 0x03},
++	{0x9004, 0x0b},
++	{0x920c, 0x6a},
++	{0x920d, 0x22},
++	{0x920e, 0x6a},
++	{0x920f, 0x23},
++	{0x9214, 0x6a},
++	{0x9215, 0x20},
++	{0x9216, 0x6a},
++	{0x9217, 0x21},
++	{0x9385, 0x3e},
++	{0x9387, 0x1b},
++	{0x938d, 0x4d},
++	{0x938f, 0x43},
++	{0x9391, 0x1b},
++	{0x9395, 0x4d},
++	{0x9397, 0x43},
++	{0x9399, 0x1b},
++	{0x939d, 0x3e},
++	{0x939f, 0x2f},
++	{0x93a5, 0x43},
++	{0x93a7, 0x2f},
++	{0x93a9, 0x2f},
++	{0x93ad, 0x34},
++	{0x93af, 0x2f},
++	{0x93b5, 0x3e},
++	{0x93b7, 0x2f},
++	{0x93bd, 0x4d},
++	{0x93bf, 0x43},
++	{0x93c1, 0x2f},
++	{0x93c5, 0x4d},
++	{0x93c7, 0x43},
++	{0x93c9, 0x2f},
++	{0x974b, 0x02},
++	{0x995c, 0x8c},
++	{0x995d, 0x00},
++	{0x995e, 0x00},
++	{0x9963, 0x64},
++	{0x9964, 0x50},
++	{0xaa0a, 0x26},
++	{0xae03, 0x04},
++	{0xae04, 0x03},
++	{0xae05, 0x03},
++	{0xbc1c, 0x08},
++	{0xbcf1, 0x02},
++};
++
++/* 16 mpix 10fps */
++static const struct imx519_reg mode_4656x3496_regs[] = {
++	{0x0111, 0x02},
++	{0x0112, 0x0a},
++	{0x0113, 0x0a},
++	{0x0114, 0x01},
++	{0x0342, 0x42},
++	{0x0343, 0x00},
++	{0x0340, 0x0d},
++	{0x0341, 0xf4},
++	{0x0344, 0x00},
++	{0x0345, 0x00},
++	{0x0346, 0x00},
++	{0x0347, 0x00},
++	{0x0348, 0x12},
++	{0x0349, 0x2f},
++	{0x034a, 0x0d},
++	{0x034b, 0xa7},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0222, 0x01},
++	{0x0900, 0x00},
++	{0x0901, 0x11},
++	{0x0902, 0x0a},
++	{0x3f4c, 0x01},
++	{0x3f4d, 0x01},
++	{0x4254, 0x7f},
++	{0x0401, 0x00},
++	{0x0404, 0x00},
++	{0x0405, 0x10},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x12},
++	{0x040d, 0x30},
++	{0x040e, 0x0d},
++	{0x040f, 0xa8},
++	{0x034c, 0x12},
++	{0x034d, 0x30},
++	{0x034e, 0x0d},
++	{0x034f, 0xa8},
++	{0x0301, 0x06},
++	{0x0303, 0x04},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x57},
++	{0x0309, 0x0a},
++	{0x030b, 0x02},
++	{0x030d, 0x04},
++	{0x030e, 0x01},
++	{0x030f, 0x49},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0xb6},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3e3b, 0x00},
++	{0x0106, 0x00},
++	{0x0b00, 0x00},
++	{0x3230, 0x00},
++	{0x3f14, 0x01},
++	{0x3f3c, 0x01},
++	{0x3f0d, 0x0a},
++	{0x3fbc, 0x00},
++	{0x3c06, 0x00},
++	{0x3c07, 0x48},
++	{0x3c0a, 0x00},
++	{0x3c0b, 0x00},
++	{0x3f78, 0x00},
++	{0x3f79, 0x40},
++	{0x3f7c, 0x00},
++	{0x3f7d, 0x00},
++};
++
++/* 4k 21fps mode */
++static const struct imx519_reg mode_3840x2160_regs[] = {
++	{0x0111, 0x02},
++	{0x0112, 0x0a},
++	{0x0113, 0x0a},
++	{0x0114, 0x01},
++	{0x0342, 0x38},
++	{0x0343, 0x70},
++	{0x0340, 0x08},
++	{0x0341, 0xd4},
++	{0x0344, 0x01},
++	{0x0345, 0x98},
++	{0x0346, 0x02},
++	{0x0347, 0xa0},
++	{0x0348, 0x10},
++	{0x0349, 0x97},
++	{0x034a, 0x0b},
++	{0x034b, 0x17},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0222, 0x01},
++	{0x0900, 0x00},
++	{0x0901, 0x11},
++	{0x0902, 0x0a},
++	{0x3f4c, 0x01},
++	{0x3f4d, 0x01},
++	{0x4254, 0x7f},
++	{0x0401, 0x00},
++	{0x0404, 0x00},
++	{0x0405, 0x10},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x0f},
++	{0x040d, 0x00},
++	{0x040e, 0x08},
++	{0x040f, 0x70},
++	{0x034c, 0x0f},
++	{0x034d, 0x00},
++	{0x034e, 0x08},
++	{0x034f, 0x70},
++	{0x0301, 0x06},
++	{0x0303, 0x04},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x57},
++	{0x0309, 0x0a},
++	{0x030b, 0x02},
++	{0x030d, 0x04},
++	{0x030e, 0x01},
++	{0x030f, 0x49},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0xb6},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3e3b, 0x00},
++	{0x0106, 0x00},
++	{0x0b00, 0x00},
++	{0x3230, 0x00},
++	{0x3f14, 0x01},
++	{0x3f3c, 0x01},
++	{0x3f0d, 0x0a},
++	{0x3fbc, 0x00},
++	{0x3c06, 0x00},
++	{0x3c07, 0x48},
++	{0x3c0a, 0x00},
++	{0x3c0b, 0x00},
++	{0x3f78, 0x00},
++	{0x3f79, 0x40},
++	{0x3f7c, 0x00},
++	{0x3f7d, 0x00},
++};
++
++/* 2x2 binned 30fps mode */
++static const struct imx519_reg mode_2328x1748_regs[] = {
++	{0x0111, 0x02},
++	{0x0112, 0x0a},
++	{0x0113, 0x0a},
++	{0x0114, 0x01},
++	{0x0342, 0x24},
++	{0x0343, 0x12},
++	{0x0340, 0x09},
++	{0x0341, 0xac},
++	{0x0344, 0x00},
++	{0x0345, 0x00},
++	{0x0346, 0x00},
++	{0x0347, 0x00},
++	{0x0348, 0x12},
++	{0x0349, 0x2f},
++	{0x034a, 0x0d},
++	{0x034b, 0xa7},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0222, 0x01},
++	{0x0900, 0x01},
++	{0x0901, 0x22},
++	{0x0902, 0x0a},
++	{0x3f4c, 0x01},
++	{0x3f4d, 0x01},
++	{0x4254, 0x7f},
++	{0x0401, 0x00},
++	{0x0404, 0x00},
++	{0x0405, 0x10},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x09},
++	{0x040d, 0x18},
++	{0x040e, 0x06},
++	{0x040f, 0xd4},
++	{0x034c, 0x09},
++	{0x034d, 0x18},
++	{0x034e, 0x06},
++	{0x034f, 0xd4},
++	{0x0301, 0x06},
++	{0x0303, 0x04},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x57},
++	{0x0309, 0x0a},
++	{0x030b, 0x02},
++	{0x030d, 0x04},
++	{0x030e, 0x01},
++	{0x030f, 0x49},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0xb6},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3e3b, 0x00},
++	{0x0106, 0x00},
++	{0x0b00, 0x00},
++	{0x3230, 0x00},
++	{0x3f14, 0x01},
++	{0x3f3c, 0x01},
++	{0x3f0d, 0x0a},
++	{0x3fbc, 0x00},
++	{0x3c06, 0x00},
++	{0x3c07, 0x48},
++	{0x3c0a, 0x00},
++	{0x3c0b, 0x00},
++	{0x3f78, 0x00},
++	{0x3f79, 0x40},
++	{0x3f7c, 0x00},
++	{0x3f7d, 0x00},
++};
++
++/* 1080p 60fps mode */
++static const struct imx519_reg mode_1920x1080_regs[] = {
++	{0x0111, 0x02},
++	{0x0112, 0x0a},
++	{0x0113, 0x0a},
++	{0x0114, 0x01},
++	{0x0342, 0x25},
++	{0x0343, 0xd9},
++	{0x0340, 0x04},
++	{0x0341, 0x9c},
++	{0x0344, 0x01},
++	{0x0345, 0x98},
++	{0x0346, 0x02},
++	{0x0347, 0xa2},
++	{0x0348, 0x10},
++	{0x0349, 0x97},
++	{0x034a, 0x0b},
++	{0x034b, 0x15},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0222, 0x01},
++	{0x0900, 0x01},
++	{0x0901, 0x22},
++	{0x0902, 0x0a},
++	{0x3f4c, 0x01},
++	{0x3f4d, 0x01},
++	{0x4254, 0x7f},
++	{0x0401, 0x00},
++	{0x0404, 0x00},
++	{0x0405, 0x10},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x07},
++	{0x040d, 0x80},
++	{0x040e, 0x04},
++	{0x040f, 0x38},
++	{0x034c, 0x07},
++	{0x034d, 0x80},
++	{0x034e, 0x04},
++	{0x034f, 0x38},
++	{0x0301, 0x06},
++	{0x0303, 0x04},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x57},
++	{0x0309, 0x0a},
++	{0x030b, 0x02},
++	{0x030d, 0x04},
++	{0x030e, 0x01},
++	{0x030f, 0x49},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0xb6},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3e3b, 0x00},
++	{0x0106, 0x00},
++	{0x0b00, 0x00},
++	{0x3230, 0x00},
++	{0x3f14, 0x01},
++	{0x3f3c, 0x01},
++	{0x3f0d, 0x0a},
++	{0x3fbc, 0x00},
++	{0x3c06, 0x00},
++	{0x3c07, 0x48},
++	{0x3c0a, 0x00},
++	{0x3c0b, 0x00},
++	{0x3f78, 0x00},
++	{0x3f79, 0x40},
++	{0x3f7c, 0x00},
++	{0x3f7d, 0x00},
++};
++
++/* 720p 120fps mode */
++static const struct imx519_reg mode_1280x720_regs[] = {
++	{0x0111, 0x02},
++	{0x0112, 0x0a},
++	{0x0113, 0x0a},
++	{0x0114, 0x01},
++	{0x0342, 0x1b},
++	{0x0343, 0x3b},
++	{0x0340, 0x03},
++	{0x0341, 0x34},
++	{0x0344, 0x04},
++	{0x0345, 0x18},
++	{0x0346, 0x04},
++	{0x0347, 0x12},
++	{0x0348, 0x0e},
++	{0x0349, 0x17},
++	{0x034a, 0x09},
++	{0x034b, 0xb6},
++	{0x0220, 0x00},
++	{0x0221, 0x11},
++	{0x0222, 0x01},
++	{0x0900, 0x01},
++	{0x0901, 0x22},
++	{0x0902, 0x0a},
++	{0x3f4c, 0x01},
++	{0x3f4d, 0x01},
++	{0x4254, 0x7f},
++	{0x0401, 0x00},
++	{0x0404, 0x00},
++	{0x0405, 0x10},
++	{0x0408, 0x00},
++	{0x0409, 0x00},
++	{0x040a, 0x00},
++	{0x040b, 0x00},
++	{0x040c, 0x05},
++	{0x040d, 0x00},
++	{0x040e, 0x02},
++	{0x040f, 0xd0},
++	{0x034c, 0x05},
++	{0x034d, 0x00},
++	{0x034e, 0x02},
++	{0x034f, 0xd0},
++	{0x0301, 0x06},
++	{0x0303, 0x04},
++	{0x0305, 0x04},
++	{0x0306, 0x01},
++	{0x0307, 0x57},
++	{0x0309, 0x0a},
++	{0x030b, 0x02},
++	{0x030d, 0x04},
++	{0x030e, 0x01},
++	{0x030f, 0x49},
++	{0x0310, 0x01},
++	{0x0820, 0x07},
++	{0x0821, 0xb6},
++	{0x0822, 0x00},
++	{0x0823, 0x00},
++	{0x3e20, 0x01},
++	{0x3e37, 0x00},
++	{0x3e3b, 0x00},
++	{0x0106, 0x00},
++	{0x0b00, 0x00},
++	{0x3230, 0x00},
++	{0x3f14, 0x01},
++	{0x3f3c, 0x01},
++	{0x3f0d, 0x0a},
++	{0x3fbc, 0x00},
++	{0x3c06, 0x00},
++	{0x3c07, 0x48},
++	{0x3c0a, 0x00},
++	{0x3c0b, 0x00},
++	{0x3f78, 0x00},
++	{0x3f79, 0x40},
++	{0x3f7c, 0x00},
++	{0x3f7d, 0x00},
++};
++
++/* Mode configs */
++static const struct imx519_mode supported_modes_10bit[] = {
++	{
++		.width = 4656,
++		.height = 3496,
++		.line_length_pix = 0x4200,
++		.crop = {
++			.left = IMX519_PIXEL_ARRAY_LEFT,
++			.top = IMX519_PIXEL_ARRAY_TOP,
++			.width = 4656,
++			.height = 3496,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 1000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 1000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_4656x3496_regs),
++			.regs = mode_4656x3496_regs,
++		}
++	},
++	{
++		.width = 3840,
++		.height = 2160,
++		.line_length_pix = 0x3870,
++		.crop = {
++			.left = IMX519_PIXEL_ARRAY_LEFT + 408,
++			.top = IMX519_PIXEL_ARRAY_TOP + 672,
++			.width = 3840,
++			.height = 2160,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 2100
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 2100
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_3840x2160_regs),
++			.regs = mode_3840x2160_regs,
++		}
++	},
++	{
++		.width = 2328,
++		.height = 1748,
++		.line_length_pix = 0x2412,
++		.crop = {
++			.left = IMX519_PIXEL_ARRAY_LEFT,
++			.top = IMX519_PIXEL_ARRAY_TOP,
++			.width = 4656,
++			.height = 3496,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 3000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 3000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_2328x1748_regs),
++			.regs = mode_2328x1748_regs,
++		}
++	},
++	{
++		.width = 1920,
++		.height = 1080,
++		.line_length_pix = 0x25D9,
++		.crop = {
++			.left = IMX519_PIXEL_ARRAY_LEFT + 408,
++			.top = IMX519_PIXEL_ARRAY_TOP + 674,
++			.width = 3840,
++			.height = 2160,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 6000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 6000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
++			.regs = mode_1920x1080_regs,
++		}
++	},
++	{
++		.width = 1280,
++		.height = 720,
++		.line_length_pix = 0x1B3B,
++		.crop = {
++			.left = IMX519_PIXEL_ARRAY_LEFT + 1048,
++			.top = IMX519_PIXEL_ARRAY_TOP + 1042,
++			.width = 2560,
++			.height = 1440,
++		},
++		.timeperframe_min = {
++			.numerator = 100,
++			.denominator = 12000
++		},
++		.timeperframe_default = {
++			.numerator = 100,
++			.denominator = 12000
++		},
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mode_1280x720_regs),
++			.regs = mode_1280x720_regs,
++		}
++	}
++};
++
++/*
++ * The supported formats.
++ * This table MUST contain 4 entries per format, to cover the various flip
++ * combinations in the order
++ * - no flip
++ * - h flip
++ * - v flip
++ * - h&v flips
++ */
++static const u32 codes[] = {
++	/* 10-bit modes. */
++	MEDIA_BUS_FMT_SRGGB10_1X10,
++	MEDIA_BUS_FMT_SGRBG10_1X10,
++	MEDIA_BUS_FMT_SGBRG10_1X10,
++	MEDIA_BUS_FMT_SBGGR10_1X10,
++};
++
++static const char * const imx519_test_pattern_menu[] = {
++	"Disabled",
++	"Color Bars",
++	"Solid Color",
++	"Grey Color Bars",
++	"PN9"
++};
++
++static const int imx519_test_pattern_val[] = {
++	IMX519_TEST_PATTERN_DISABLE,
++	IMX519_TEST_PATTERN_COLOR_BARS,
++	IMX519_TEST_PATTERN_SOLID_COLOR,
++	IMX519_TEST_PATTERN_GREY_COLOR,
++	IMX519_TEST_PATTERN_PN9,
++};
++
++/* regulator supplies */
++static const char * const imx519_supply_name[] = {
++	/* Supplies can be enabled in any order */
++	"VANA",  /* Analog (2.8V) supply */
++	"VDIG",  /* Digital Core (1.05V) supply */
++	"VDDL",  /* IF (1.8V) supply */
++};
++
++#define IMX519_NUM_SUPPLIES ARRAY_SIZE(imx519_supply_name)
++
++/*
++ * Initialisation delay between XCLR low->high and the moment when the sensor
++ * can start capture (i.e. can leave software standby), given by T7 in the
++ * datasheet is 8ms.  This does include I2C setup time as well.
++ *
++ * Note, that delay between XCLR low->high and reading the CCI ID register (T6
++ * in the datasheet) is much smaller - 600us.
++ */
++#define IMX519_XCLR_MIN_DELAY_US	8000
++#define IMX519_XCLR_DELAY_RANGE_US	1000
++
++struct imx519 {
++	struct v4l2_subdev sd;
++	struct media_pad pad;
++
++	unsigned int fmt_code;
++
++	struct clk *xclk;
++
++	struct gpio_desc *reset_gpio;
++	struct regulator_bulk_data supplies[IMX519_NUM_SUPPLIES];
++
++	struct v4l2_ctrl_handler ctrl_handler;
++	/* V4L2 Controls */
++	struct v4l2_ctrl *pixel_rate;
++	struct v4l2_ctrl *exposure;
++	struct v4l2_ctrl *vflip;
++	struct v4l2_ctrl *hflip;
++	struct v4l2_ctrl *vblank;
++	struct v4l2_ctrl *hblank;
++
++	/* Current mode */
++	const struct imx519_mode *mode;
++
++	/*
++	 * Mutex for serialized access:
++	 * Protect sensor module set pad format and start/stop streaming safely.
++	 */
++	struct mutex mutex;
++
++	/* Streaming on/off */
++	bool streaming;
++
++	/* Rewrite common registers on stream on? */
++	bool common_regs_written;
++
++	/* Current long exposure factor in use. Set through V4L2_CID_VBLANK */
++	unsigned int long_exp_shift;
++};
++
++static inline struct imx519 *to_imx519(struct v4l2_subdev *_sd)
++{
++	return container_of(_sd, struct imx519, sd);
++}
++
++/* Read registers up to 2 at a time */
++static int imx519_read_reg(struct imx519 *imx519, u16 reg, u32 len, u32 *val)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	struct i2c_msg msgs[2];
++	u8 addr_buf[2] = { reg >> 8, reg & 0xff };
++	u8 data_buf[4] = { 0, };
++	int ret;
++
++	if (len > 4)
++		return -EINVAL;
++
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = ARRAY_SIZE(addr_buf);
++	msgs[0].buf = addr_buf;
++
++	/* Read data from register */
++	msgs[1].addr = client->addr;
++	msgs[1].flags = I2C_M_RD;
++	msgs[1].len = len;
++	msgs[1].buf = &data_buf[4 - len];
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	*val = get_unaligned_be32(data_buf);
++
++	return 0;
++}
++
++/* Write registers up to 2 at a time */
++static int imx519_write_reg(struct imx519 *imx519, u16 reg, u32 len, u32 val)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	u8 buf[6];
++
++	if (len > 4)
++		return -EINVAL;
++
++	put_unaligned_be16(reg, buf);
++	put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
++	if (i2c_master_send(client, buf, len + 2) != len + 2)
++		return -EIO;
++
++	return 0;
++}
++
++/* Write a list of registers */
++static int imx519_write_regs(struct imx519 *imx519,
++			     const struct imx519_reg *regs, u32 len)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	unsigned int i;
++	int ret;
++
++	for (i = 0; i < len; i++) {
++		ret = imx519_write_reg(imx519, regs[i].address, 1, regs[i].val);
++		if (ret) {
++			dev_err_ratelimited(&client->dev,
++					    "Failed to write reg 0x%4.4x. error = %d\n",
++					    regs[i].address, ret);
++
++			return ret;
++		}
++	}
++
++	return 0;
++}
++
++/* Get bayer order based on flip setting. */
++static u32 imx519_get_format_code(struct imx519 *imx519)
++{
++	unsigned int i;
++
++	lockdep_assert_held(&imx519->mutex);
++
++	i = (imx519->vflip->val ? 2 : 0) |
++	    (imx519->hflip->val ? 1 : 0);
++
++	return codes[i];
++}
++
++static int imx519_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct imx519 *imx519 = to_imx519(sd);
++	struct v4l2_mbus_framefmt *try_fmt_img =
++		v4l2_subdev_get_try_format(sd, fh->state, 0);
++	struct v4l2_rect *try_crop;
++
++	mutex_lock(&imx519->mutex);
++
++	/* Initialize try_fmt for the image pad */
++	try_fmt_img->width = supported_modes_10bit[0].width;
++	try_fmt_img->height = supported_modes_10bit[0].height;
++	try_fmt_img->code = imx519_get_format_code(imx519);
++	try_fmt_img->field = V4L2_FIELD_NONE;
++
++	/* Initialize try_crop */
++	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
++	try_crop->left = IMX519_PIXEL_ARRAY_LEFT;
++	try_crop->top = IMX519_PIXEL_ARRAY_TOP;
++	try_crop->width = IMX519_PIXEL_ARRAY_WIDTH;
++	try_crop->height = IMX519_PIXEL_ARRAY_HEIGHT;
++
++	mutex_unlock(&imx519->mutex);
++
++	return 0;
++}
++
++static void imx519_adjust_exposure_range(struct imx519 *imx519)
++{
++	int exposure_max, exposure_def;
++
++	/* Honour the VBLANK limits when setting exposure. */
++	exposure_max = imx519->mode->height + imx519->vblank->val -
++		       IMX519_EXPOSURE_OFFSET;
++	exposure_def = min(exposure_max, imx519->exposure->val);
++	__v4l2_ctrl_modify_range(imx519->exposure, imx519->exposure->minimum,
++				 exposure_max, imx519->exposure->step,
++				 exposure_def);
++}
++
++static int imx519_set_frame_length(struct imx519 *imx519, unsigned int val)
++{
++	int ret = 0;
++
++	imx519->long_exp_shift = 0;
++
++	while (val > IMX519_FRAME_LENGTH_MAX) {
++		imx519->long_exp_shift++;
++		val >>= 1;
++	}
++
++	ret = imx519_write_reg(imx519, IMX519_REG_FRAME_LENGTH,
++			       IMX519_REG_VALUE_16BIT, val);
++	if (ret)
++		return ret;
++
++	return imx519_write_reg(imx519, IMX519_LONG_EXP_SHIFT_REG,
++				IMX519_REG_VALUE_08BIT, imx519->long_exp_shift);
++}
++
++static int imx519_set_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct imx519 *imx519 =
++		container_of(ctrl->handler, struct imx519, ctrl_handler);
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	int ret = 0;
++
++	/*
++	 * The VBLANK control may change the limits of usable exposure, so check
++	 * and adjust if necessary.
++	 */
++	if (ctrl->id == V4L2_CID_VBLANK)
++		imx519_adjust_exposure_range(imx519);
++
++	/*
++	 * Applying V4L2 control value only happens
++	 * when power is up for streaming
++	 */
++	if (pm_runtime_get_if_in_use(&client->dev) == 0)
++		return 0;
++
++	switch (ctrl->id) {
++	case V4L2_CID_ANALOGUE_GAIN:
++		ret = imx519_write_reg(imx519, IMX519_REG_ANALOG_GAIN,
++				       IMX519_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_EXPOSURE:
++		ret = imx519_write_reg(imx519, IMX519_REG_EXPOSURE,
++				       IMX519_REG_VALUE_16BIT, ctrl->val >>
++							imx519->long_exp_shift);
++		break;
++	case V4L2_CID_DIGITAL_GAIN:
++		ret = imx519_write_reg(imx519, IMX519_REG_DIGITAL_GAIN,
++				       IMX519_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN:
++		ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN,
++				       IMX519_REG_VALUE_16BIT,
++				       imx519_test_pattern_val[ctrl->val]);
++		break;
++	case V4L2_CID_TEST_PATTERN_RED:
++		ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_R,
++				       IMX519_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN_GREENR:
++		ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_GR,
++				       IMX519_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN_BLUE:
++		ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_B,
++				       IMX519_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_TEST_PATTERN_GREENB:
++		ret = imx519_write_reg(imx519, IMX519_REG_TEST_PATTERN_GB,
++				       IMX519_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_HFLIP:
++	case V4L2_CID_VFLIP:
++		ret = imx519_write_reg(imx519, IMX519_REG_ORIENTATION, 1,
++				       imx519->hflip->val |
++				       imx519->vflip->val << 1);
++		break;
++	case V4L2_CID_VBLANK:
++		ret = imx519_set_frame_length(imx519,
++					      imx519->mode->height + ctrl->val);
++		break;
++	default:
++		dev_info(&client->dev,
++			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
++			 ctrl->id, ctrl->val);
++		ret = -EINVAL;
++		break;
++	}
++
++	pm_runtime_put(&client->dev);
++
++	return ret;
++}
++
++static const struct v4l2_ctrl_ops imx519_ctrl_ops = {
++	.s_ctrl = imx519_set_ctrl,
++};
++
++static int imx519_enum_mbus_code(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_state *sd_state,
++				 struct v4l2_subdev_mbus_code_enum *code)
++{
++	struct imx519 *imx519 = to_imx519(sd);
++
++	if (code->index > 0)
++		return -EINVAL;
++
++	code->code = imx519_get_format_code(imx519);
++
++	return 0;
++}
++
++static int imx519_enum_frame_size(struct v4l2_subdev *sd,
++				  struct v4l2_subdev_state *sd_state,
++				  struct v4l2_subdev_frame_size_enum *fse)
++{
++	struct imx519 *imx519 = to_imx519(sd);
++
++	if (fse->index >= ARRAY_SIZE(supported_modes_10bit))
++		return -EINVAL;
++
++	if (fse->code != imx519_get_format_code(imx519))
++		return -EINVAL;
++
++	fse->min_width = supported_modes_10bit[fse->index].width;
++	fse->max_width = fse->min_width;
++	fse->min_height = supported_modes_10bit[fse->index].height;
++	fse->max_height = fse->min_height;
++
++	return 0;
++}
++
++static void imx519_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
++{
++	fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
++	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
++							  fmt->colorspace,
++							  fmt->ycbcr_enc);
++	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
++}
++
++static void imx519_update_image_pad_format(struct imx519 *imx519,
++					   const struct imx519_mode *mode,
++					   struct v4l2_subdev_format *fmt)
++{
++	fmt->format.width = mode->width;
++	fmt->format.height = mode->height;
++	fmt->format.field = V4L2_FIELD_NONE;
++	imx519_reset_colorspace(&fmt->format);
++}
++
++static int imx519_get_pad_format(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_state *sd_state,
++				 struct v4l2_subdev_format *fmt)
++{
++	struct imx519 *imx519 = to_imx519(sd);
++
++	if (fmt->pad != 0)
++		return -EINVAL;
++
++	mutex_lock(&imx519->mutex);
++
++	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++		struct v4l2_mbus_framefmt *try_fmt =
++			v4l2_subdev_get_try_format(&imx519->sd, sd_state,
++						   fmt->pad);
++		/* update the code which could change due to vflip or hflip: */
++		try_fmt->code = imx519_get_format_code(imx519);
++		fmt->format = *try_fmt;
++	} else {
++		imx519_update_image_pad_format(imx519, imx519->mode,
++					       fmt);
++		fmt->format.code = imx519_get_format_code(imx519);
++	}
++
++	mutex_unlock(&imx519->mutex);
++	return 0;
++}
++
++static
++unsigned int imx519_get_frame_length(const struct imx519_mode *mode,
++				     const struct v4l2_fract *timeperframe)
++{
++	u64 frame_length;
++
++	frame_length = (u64)timeperframe->numerator * IMX519_PIXEL_RATE;
++	do_div(frame_length,
++	       (u64)timeperframe->denominator * mode->line_length_pix);
++
++	if (WARN_ON(frame_length > IMX519_FRAME_LENGTH_MAX))
++		frame_length = IMX519_FRAME_LENGTH_MAX;
++
++	return max_t(unsigned int, frame_length, mode->height);
++}
++
++static void imx519_set_framing_limits(struct imx519 *imx519)
++{
++	unsigned int frm_length_min, frm_length_default, hblank;
++	const struct imx519_mode *mode = imx519->mode;
++
++	frm_length_min = imx519_get_frame_length(mode, &mode->timeperframe_min);
++	frm_length_default =
++		     imx519_get_frame_length(mode, &mode->timeperframe_default);
++
++	/* Default to no long exposure multiplier. */
++	imx519->long_exp_shift = 0;
++
++	/* Update limits and set FPS to default */
++	__v4l2_ctrl_modify_range(imx519->vblank, frm_length_min - mode->height,
++				 ((1 << IMX519_LONG_EXP_SHIFT_MAX) *
++					IMX519_FRAME_LENGTH_MAX) - mode->height,
++				 1, frm_length_default - mode->height);
++
++	/* Setting this will adjust the exposure limits as well. */
++	__v4l2_ctrl_s_ctrl(imx519->vblank, frm_length_default - mode->height);
++
++	/*
++	 * Currently PPL is fixed to the mode specified value, so hblank
++	 * depends on mode->width only, and is not changeable in any
++	 * way other than changing the mode.
++	 */
++	hblank = mode->line_length_pix - mode->width;
++	__v4l2_ctrl_modify_range(imx519->hblank, hblank, hblank, 1, hblank);
++}
++
++static int imx519_set_pad_format(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_state *sd_state,
++				 struct v4l2_subdev_format *fmt)
++{
++	struct v4l2_mbus_framefmt *framefmt;
++	const struct imx519_mode *mode;
++	struct imx519 *imx519 = to_imx519(sd);
++
++	if (fmt->pad != 0)
++		return -EINVAL;
++
++	mutex_lock(&imx519->mutex);
++
++	/* Bayer order varies with flips */
++	fmt->format.code = imx519_get_format_code(imx519);
++
++	mode = v4l2_find_nearest_size(supported_modes_10bit,
++				      ARRAY_SIZE(supported_modes_10bit),
++				      width, height,
++				      fmt->format.width,
++				      fmt->format.height);
++	imx519_update_image_pad_format(imx519, mode, fmt);
++	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++		framefmt = v4l2_subdev_get_try_format(sd, sd_state,
++						      fmt->pad);
++		*framefmt = fmt->format;
++	} else {
++		imx519->mode = mode;
++		imx519->fmt_code = fmt->format.code;
++		imx519_set_framing_limits(imx519);
++	}
++
++	mutex_unlock(&imx519->mutex);
++
++	return 0;
++}
++
++static const struct v4l2_rect *
++__imx519_get_pad_crop(struct imx519 *imx519, struct v4l2_subdev_state *sd_state,
++		      unsigned int pad, enum v4l2_subdev_format_whence which)
++{
++	switch (which) {
++	case V4L2_SUBDEV_FORMAT_TRY:
++		return v4l2_subdev_get_try_crop(&imx519->sd, sd_state, pad);
++	case V4L2_SUBDEV_FORMAT_ACTIVE:
++		return &imx519->mode->crop;
++	}
++
++	return NULL;
++}
++
++static int imx519_get_selection(struct v4l2_subdev *sd,
++				struct v4l2_subdev_state *sd_state,
++				struct v4l2_subdev_selection *sel)
++{
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP: {
++		struct imx519 *imx519 = to_imx519(sd);
++
++		mutex_lock(&imx519->mutex);
++		sel->r = *__imx519_get_pad_crop(imx519, sd_state, sel->pad,
++						sel->which);
++		mutex_unlock(&imx519->mutex);
++
++		return 0;
++	}
++
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++		sel->r.left = 0;
++		sel->r.top = 0;
++		sel->r.width = IMX519_NATIVE_WIDTH;
++		sel->r.height = IMX519_NATIVE_HEIGHT;
++
++		return 0;
++
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		sel->r.left = IMX519_PIXEL_ARRAY_LEFT;
++		sel->r.top = IMX519_PIXEL_ARRAY_TOP;
++		sel->r.width = IMX519_PIXEL_ARRAY_WIDTH;
++		sel->r.height = IMX519_PIXEL_ARRAY_HEIGHT;
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++/* Start streaming */
++static int imx519_start_streaming(struct imx519 *imx519)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	const struct imx519_reg_list *reg_list;
++	int ret;
++
++	if (!imx519->common_regs_written) {
++		ret = imx519_write_regs(imx519, mode_common_regs,
++					ARRAY_SIZE(mode_common_regs));
++
++		if (ret) {
++			dev_err(&client->dev, "%s failed to set common settings\n",
++				__func__);
++			return ret;
++		}
++		imx519->common_regs_written = true;
++	}
++
++	/* Apply default values of current mode */
++	reg_list = &imx519->mode->reg_list;
++	ret = imx519_write_regs(imx519, reg_list->regs, reg_list->num_of_regs);
++	if (ret) {
++		dev_err(&client->dev, "%s failed to set mode\n", __func__);
++		return ret;
++	}
++
++	/* Apply customized values from user */
++	ret =  __v4l2_ctrl_handler_setup(imx519->sd.ctrl_handler);
++	if (ret)
++		return ret;
++
++	/* set stream on register */
++	return imx519_write_reg(imx519, IMX519_REG_MODE_SELECT,
++				IMX519_REG_VALUE_08BIT, IMX519_MODE_STREAMING);
++}
++
++/* Stop streaming */
++static void imx519_stop_streaming(struct imx519 *imx519)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	int ret;
++
++	/* set stream off register */
++	ret = imx519_write_reg(imx519, IMX519_REG_MODE_SELECT,
++			       IMX519_REG_VALUE_08BIT, IMX519_MODE_STANDBY);
++	if (ret)
++		dev_err(&client->dev, "%s failed to set stream\n", __func__);
++}
++
++static int imx519_set_stream(struct v4l2_subdev *sd, int enable)
++{
++	struct imx519 *imx519 = to_imx519(sd);
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	int ret = 0;
++
++	mutex_lock(&imx519->mutex);
++	if (imx519->streaming == enable) {
++		mutex_unlock(&imx519->mutex);
++		return 0;
++	}
++
++	if (enable) {
++		ret = pm_runtime_get_sync(&client->dev);
++		if (ret < 0) {
++			pm_runtime_put_noidle(&client->dev);
++			goto err_unlock;
++		}
++
++		/*
++		 * Apply default & customized values
++		 * and then start streaming.
++		 */
++		ret = imx519_start_streaming(imx519);
++		if (ret)
++			goto err_rpm_put;
++	} else {
++		imx519_stop_streaming(imx519);
++		pm_runtime_put(&client->dev);
++	}
++
++	imx519->streaming = enable;
++
++	/* vflip and hflip cannot change during streaming */
++	__v4l2_ctrl_grab(imx519->vflip, enable);
++	__v4l2_ctrl_grab(imx519->hflip, enable);
++
++	mutex_unlock(&imx519->mutex);
++
++	return ret;
++
++err_rpm_put:
++	pm_runtime_put(&client->dev);
++err_unlock:
++	mutex_unlock(&imx519->mutex);
++
++	return ret;
++}
++
++/* Power/clock management functions */
++static int imx519_power_on(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx519 *imx519 = to_imx519(sd);
++	int ret;
++
++	ret = regulator_bulk_enable(IMX519_NUM_SUPPLIES,
++				    imx519->supplies);
++	if (ret) {
++		dev_err(&client->dev, "%s: failed to enable regulators\n",
++			__func__);
++		return ret;
++	}
++
++	ret = clk_prepare_enable(imx519->xclk);
++	if (ret) {
++		dev_err(&client->dev, "%s: failed to enable clock\n",
++			__func__);
++		goto reg_off;
++	}
++
++	gpiod_set_value_cansleep(imx519->reset_gpio, 1);
++	usleep_range(IMX519_XCLR_MIN_DELAY_US,
++		     IMX519_XCLR_MIN_DELAY_US + IMX519_XCLR_DELAY_RANGE_US);
++
++	return 0;
++
++reg_off:
++	regulator_bulk_disable(IMX519_NUM_SUPPLIES, imx519->supplies);
++	return ret;
++}
++
++static int imx519_power_off(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx519 *imx519 = to_imx519(sd);
++
++	gpiod_set_value_cansleep(imx519->reset_gpio, 0);
++	regulator_bulk_disable(IMX519_NUM_SUPPLIES, imx519->supplies);
++	clk_disable_unprepare(imx519->xclk);
++
++	/* Force reprogramming of the common registers when powered up again. */
++	imx519->common_regs_written = false;
++
++	return 0;
++}
++
++static int __maybe_unused imx519_suspend(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx519 *imx519 = to_imx519(sd);
++
++	if (imx519->streaming)
++		imx519_stop_streaming(imx519);
++
++	return 0;
++}
++
++static int __maybe_unused imx519_resume(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx519 *imx519 = to_imx519(sd);
++	int ret;
++
++	if (imx519->streaming) {
++		ret = imx519_start_streaming(imx519);
++		if (ret)
++			goto error;
++	}
++
++	return 0;
++
++error:
++	imx519_stop_streaming(imx519);
++	imx519->streaming = 0;
++	return ret;
++}
++
++static int imx519_get_regulators(struct imx519 *imx519)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	unsigned int i;
++
++	for (i = 0; i < IMX519_NUM_SUPPLIES; i++)
++		imx519->supplies[i].supply = imx519_supply_name[i];
++
++	return devm_regulator_bulk_get(&client->dev,
++				       IMX519_NUM_SUPPLIES,
++				       imx519->supplies);
++}
++
++/* Verify chip ID */
++static int imx519_identify_module(struct imx519 *imx519, u32 expected_id)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	int ret;
++	u32 val;
++
++	ret = imx519_read_reg(imx519, IMX519_REG_CHIP_ID,
++			      IMX519_REG_VALUE_16BIT, &val);
++	if (ret) {
++		dev_err(&client->dev, "failed to read chip id %x, with error %d\n",
++			expected_id, ret);
++		return ret;
++	}
++
++	if (val != expected_id) {
++		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
++			expected_id, val);
++		return -EIO;
++	}
++
++	dev_info(&client->dev, "Device found is imx%x\n", val);
++
++	return 0;
++}
++
++static const struct v4l2_subdev_core_ops imx519_core_ops = {
++	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
++	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
++};
++
++static const struct v4l2_subdev_video_ops imx519_video_ops = {
++	.s_stream = imx519_set_stream,
++};
++
++static const struct v4l2_subdev_pad_ops imx519_pad_ops = {
++	.enum_mbus_code = imx519_enum_mbus_code,
++	.get_fmt = imx519_get_pad_format,
++	.set_fmt = imx519_set_pad_format,
++	.get_selection = imx519_get_selection,
++	.enum_frame_size = imx519_enum_frame_size,
++};
++
++static const struct v4l2_subdev_ops imx519_subdev_ops = {
++	.core = &imx519_core_ops,
++	.video = &imx519_video_ops,
++	.pad = &imx519_pad_ops,
++};
++
++static const struct v4l2_subdev_internal_ops imx519_internal_ops = {
++	.open = imx519_open,
++};
++
++/* Initialize control handlers */
++static int imx519_init_controls(struct imx519 *imx519)
++{
++	struct v4l2_ctrl_handler *ctrl_hdlr;
++	struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
++	struct v4l2_fwnode_device_properties props;
++	unsigned int i;
++	int ret;
++
++	ctrl_hdlr = &imx519->ctrl_handler;
++	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 16);
++	if (ret)
++		return ret;
++
++	mutex_init(&imx519->mutex);
++	ctrl_hdlr->lock = &imx519->mutex;
++
++	/* By default, PIXEL_RATE is read only */
++	imx519->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
++					       V4L2_CID_PIXEL_RATE,
++					       IMX519_PIXEL_RATE,
++					       IMX519_PIXEL_RATE, 1,
++					       IMX519_PIXEL_RATE);
++
++	/*
++	 * Create the controls here, but mode specific limits are setup
++	 * in the imx519_set_framing_limits() call below.
++	 */
++	imx519->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
++					   V4L2_CID_VBLANK, 0, 0xffff, 1, 0);
++	imx519->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
++					   V4L2_CID_HBLANK, 0, 0xffff, 1, 0);
++
++	/* HBLANK is read-only for now, but does change with mode. */
++	if (imx519->hblank)
++		imx519->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++
++	imx519->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
++					     V4L2_CID_EXPOSURE,
++					     IMX519_EXPOSURE_MIN,
++					     IMX519_EXPOSURE_MAX,
++					     IMX519_EXPOSURE_STEP,
++					     IMX519_EXPOSURE_DEFAULT);
++
++	v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
++			  IMX519_ANA_GAIN_MIN, IMX519_ANA_GAIN_MAX,
++			  IMX519_ANA_GAIN_STEP, IMX519_ANA_GAIN_DEFAULT);
++
++	v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
++			  IMX519_DGTL_GAIN_MIN, IMX519_DGTL_GAIN_MAX,
++			  IMX519_DGTL_GAIN_STEP, IMX519_DGTL_GAIN_DEFAULT);
++
++	imx519->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
++					  V4L2_CID_HFLIP, 0, 1, 1, 0);
++	if (imx519->hflip)
++		imx519->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++
++	imx519->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
++					  V4L2_CID_VFLIP, 0, 1, 1, 0);
++	if (imx519->vflip)
++		imx519->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++
++	v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx519_ctrl_ops,
++				     V4L2_CID_TEST_PATTERN,
++				     ARRAY_SIZE(imx519_test_pattern_menu) - 1,
++				     0, 0, imx519_test_pattern_menu);
++	for (i = 0; i < 4; i++) {
++		/*
++		 * The assumption is that
++		 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
++		 * V4L2_CID_TEST_PATTERN_BLUE   == V4L2_CID_TEST_PATTERN_RED + 2
++		 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
++		 */
++		v4l2_ctrl_new_std(ctrl_hdlr, &imx519_ctrl_ops,
++				  V4L2_CID_TEST_PATTERN_RED + i,
++				  IMX519_TEST_PATTERN_COLOUR_MIN,
++				  IMX519_TEST_PATTERN_COLOUR_MAX,
++				  IMX519_TEST_PATTERN_COLOUR_STEP,
++				  IMX519_TEST_PATTERN_COLOUR_MAX);
++		/* The "Solid color" pattern is white by default */
++	}
++
++	if (ctrl_hdlr->error) {
++		ret = ctrl_hdlr->error;
++		dev_err(&client->dev, "%s control init failed (%d)\n",
++			__func__, ret);
++		goto error;
++	}
++
++	ret = v4l2_fwnode_device_parse(&client->dev, &props);
++	if (ret)
++		goto error;
++
++	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx519_ctrl_ops,
++					      &props);
++	if (ret)
++		goto error;
++
++	imx519->sd.ctrl_handler = ctrl_hdlr;
++
++	/* Setup exposure and frame/line length limits. */
++	imx519_set_framing_limits(imx519);
++
++	return 0;
++
++error:
++	v4l2_ctrl_handler_free(ctrl_hdlr);
++	mutex_destroy(&imx519->mutex);
++
++	return ret;
++}
++
++static void imx519_free_controls(struct imx519 *imx519)
++{
++	v4l2_ctrl_handler_free(imx519->sd.ctrl_handler);
++	mutex_destroy(&imx519->mutex);
++}
++
++static int imx519_check_hwcfg(struct device *dev)
++{
++	struct fwnode_handle *endpoint;
++	struct v4l2_fwnode_endpoint ep_cfg = {
++		.bus_type = V4L2_MBUS_CSI2_DPHY
++	};
++	int ret = -EINVAL;
++
++	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
++	if (!endpoint) {
++		dev_err(dev, "endpoint node not found\n");
++		return -EINVAL;
++	}
++
++	if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
++		dev_err(dev, "could not parse endpoint\n");
++		goto error_out;
++	}
++
++	/* Check the number of MIPI CSI2 data lanes */
++	if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
++		dev_err(dev, "only 2 data lanes are currently supported\n");
++		goto error_out;
++	}
++
++	/* Check the link frequency set in device tree */
++	if (!ep_cfg.nr_of_link_frequencies) {
++		dev_err(dev, "link-frequency property not found in DT\n");
++		goto error_out;
++	}
++
++	if (ep_cfg.nr_of_link_frequencies != 1 ||
++	    ep_cfg.link_frequencies[0] != IMX519_DEFAULT_LINK_FREQ) {
++		dev_err(dev, "Link frequency not supported: %lld\n",
++			ep_cfg.link_frequencies[0]);
++		goto error_out;
++	}
++
++	ret = 0;
++
++error_out:
++	v4l2_fwnode_endpoint_free(&ep_cfg);
++	fwnode_handle_put(endpoint);
++
++	return ret;
++}
++
++static const struct of_device_id imx519_dt_ids[] = {
++	{ .compatible = "sony,imx519"},
++	{ /* sentinel */ }
++};
++
++static int imx519_probe(struct i2c_client *client)
++{
++	struct device *dev = &client->dev;
++	struct imx519 *imx519;
++	const struct of_device_id *match;
++	u32 xclk_freq;
++	int ret;
++
++	imx519 = devm_kzalloc(&client->dev, sizeof(*imx519), GFP_KERNEL);
++	if (!imx519)
++		return -ENOMEM;
++
++	v4l2_i2c_subdev_init(&imx519->sd, client, &imx519_subdev_ops);
++
++	match = of_match_device(imx519_dt_ids, dev);
++	if (!match)
++		return -ENODEV;
++
++	/* Check the hardware configuration in device tree */
++	if (imx519_check_hwcfg(dev))
++		return -EINVAL;
++
++	/* Get system clock (xclk) */
++	imx519->xclk = devm_clk_get(dev, NULL);
++	if (IS_ERR(imx519->xclk)) {
++		dev_err(dev, "failed to get xclk\n");
++		return PTR_ERR(imx519->xclk);
++	}
++
++	xclk_freq = clk_get_rate(imx519->xclk);
++	if (xclk_freq != IMX519_XCLK_FREQ) {
++		dev_err(dev, "xclk frequency not supported: %d Hz\n",
++			xclk_freq);
++		return -EINVAL;
++	}
++
++	ret = imx519_get_regulators(imx519);
++	if (ret) {
++		dev_err(dev, "failed to get regulators\n");
++		return ret;
++	}
++
++	/* Request optional enable pin */
++	imx519->reset_gpio = devm_gpiod_get_optional(dev, "reset",
++						     GPIOD_OUT_HIGH);
++
++	/*
++	 * The sensor must be powered for imx519_identify_module()
++	 * to be able to read the CHIP_ID register
++	 */
++	ret = imx519_power_on(dev);
++	if (ret)
++		return ret;
++
++	ret = imx519_identify_module(imx519, IMX519_CHIP_ID);
++	if (ret)
++		goto error_power_off;
++
++	/* Set default mode to max resolution */
++	imx519->mode = &supported_modes_10bit[0];
++	imx519->fmt_code = MEDIA_BUS_FMT_SRGGB10_1X10;
++
++	/* Enable runtime PM and turn off the device */
++	pm_runtime_set_active(dev);
++	pm_runtime_enable(dev);
++	pm_runtime_idle(dev);
++
++	/* This needs the pm runtime to be registered. */
++	ret = imx519_init_controls(imx519);
++	if (ret)
++		goto error_power_off;
++
++	/* Initialize subdev */
++	imx519->sd.internal_ops = &imx519_internal_ops;
++	imx519->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
++			    V4L2_SUBDEV_FL_HAS_EVENTS;
++	imx519->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
++
++	/* Initialize source pads */
++	imx519->pad.flags = MEDIA_PAD_FL_SOURCE;
++
++	ret = media_entity_pads_init(&imx519->sd.entity, 1, &imx519->pad);
++	if (ret) {
++		dev_err(dev, "failed to init entity pads: %d\n", ret);
++		goto error_handler_free;
++	}
++
++	ret = v4l2_async_register_subdev_sensor(&imx519->sd);
++	if (ret < 0) {
++		dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
++		goto error_media_entity;
++	}
++
++	return 0;
++
++error_media_entity:
++	media_entity_cleanup(&imx519->sd.entity);
++
++error_handler_free:
++	imx519_free_controls(imx519);
++
++error_power_off:
++	pm_runtime_disable(&client->dev);
++	pm_runtime_set_suspended(&client->dev);
++	imx519_power_off(&client->dev);
++
++	return ret;
++}
++
++static int imx519_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct imx519 *imx519 = to_imx519(sd);
++
++	v4l2_async_unregister_subdev(sd);
++	media_entity_cleanup(&sd->entity);
++	imx519_free_controls(imx519);
++
++	pm_runtime_disable(&client->dev);
++	if (!pm_runtime_status_suspended(&client->dev))
++		imx519_power_off(&client->dev);
++	pm_runtime_set_suspended(&client->dev);
++
++	return 0;
++}
++
++MODULE_DEVICE_TABLE(of, imx519_dt_ids);
++
++static const struct dev_pm_ops imx519_pm_ops = {
++	SET_SYSTEM_SLEEP_PM_OPS(imx519_suspend, imx519_resume)
++	SET_RUNTIME_PM_OPS(imx519_power_off, imx519_power_on, NULL)
++};
++
++static struct i2c_driver imx519_i2c_driver = {
++	.driver = {
++		.name = "imx519",
++		.of_match_table	= imx519_dt_ids,
++		.pm = &imx519_pm_ops,
++	},
++	.probe_new = imx519_probe,
++	.remove = imx519_remove,
++};
++
++module_i2c_driver(imx519_i2c_driver);
++
++MODULE_AUTHOR("Lee Jackson <info@arducam.com>");
++MODULE_DESCRIPTION("Sony IMX519 sensor driver");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0522-media-i2c-imx519-Advertise-embedded-data-node-on-med.patch b/target/linux/bcm27xx/patches-5.15/950-0522-media-i2c-imx519-Advertise-embedded-data-node-on-med.patch
new file mode 100644
index 0000000000..cc40833433
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0522-media-i2c-imx519-Advertise-embedded-data-node-on-med.patch
@@ -0,0 +1,249 @@
+From 16a061b6cf7229db782615393f020d723640da69 Mon Sep 17 00:00:00 2001
+From: Arducam <admin@arducam.com>
+Date: Wed, 15 Sep 2021 09:02:08 +0800
+Subject: [PATCH] media: i2c: imx519: Advertise embedded data node on
+ media pad 1
+
+This commit updates the imx519 driver to adverise support for embedded
+data streams.
+
+The imx519 sensor subdevice overloads the media pad to differentiate
+between image stream (pad 0) and embedded data stream (pad 1) when
+performing the v4l2_subdev_pad_ops functions.
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ drivers/media/i2c/imx519.c | 138 +++++++++++++++++++++++++++----------
+ 1 file changed, 103 insertions(+), 35 deletions(-)
+
+--- a/drivers/media/i2c/imx519.c
++++ b/drivers/media/i2c/imx519.c
+@@ -93,6 +93,16 @@
+ #define IMX519_TEST_PATTERN_B_DEFAULT	0
+ #define IMX519_TEST_PATTERN_GB_DEFAULT	0
+ 
++/* Embedded metadata stream structure */
++#define IMX519_EMBEDDED_LINE_WIDTH 16384
++#define IMX519_NUM_EMBEDDED_LINES 1
++
++enum pad_types {
++	IMAGE_PAD,
++	METADATA_PAD,
++	NUM_PADS
++};
++
+ /* IMX519 native and active pixel array size. */
+ #define IMX519_NATIVE_WIDTH		4672U
+ #define IMX519_NATIVE_HEIGHT		3648U
+@@ -970,7 +980,7 @@ static const char * const imx519_supply_
+ 
+ struct imx519 {
+ 	struct v4l2_subdev sd;
+-	struct media_pad pad;
++	struct media_pad pad[NUM_PADS];
+ 
+ 	unsigned int fmt_code;
+ 
+@@ -1101,7 +1111,9 @@ static int imx519_open(struct v4l2_subde
+ {
+ 	struct imx519 *imx519 = to_imx519(sd);
+ 	struct v4l2_mbus_framefmt *try_fmt_img =
+-		v4l2_subdev_get_try_format(sd, fh->state, 0);
++		v4l2_subdev_get_try_format(sd, fh->state, IMAGE_PAD);
++	struct v4l2_mbus_framefmt *try_fmt_meta =
++		v4l2_subdev_get_try_format(sd, fh->state, METADATA_PAD);
+ 	struct v4l2_rect *try_crop;
+ 
+ 	mutex_lock(&imx519->mutex);
+@@ -1112,8 +1124,14 @@ static int imx519_open(struct v4l2_subde
+ 	try_fmt_img->code = imx519_get_format_code(imx519);
+ 	try_fmt_img->field = V4L2_FIELD_NONE;
+ 
++	/* Initialize try_fmt for the embedded metadata pad */
++	try_fmt_meta->width = IMX519_EMBEDDED_LINE_WIDTH;
++	try_fmt_meta->height = IMX519_NUM_EMBEDDED_LINES;
++	try_fmt_meta->code = MEDIA_BUS_FMT_SENSOR_DATA;
++	try_fmt_meta->field = V4L2_FIELD_NONE;
++
+ 	/* Initialize try_crop */
+-	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
++	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, IMAGE_PAD);
+ 	try_crop->left = IMX519_PIXEL_ARRAY_LEFT;
+ 	try_crop->top = IMX519_PIXEL_ARRAY_TOP;
+ 	try_crop->width = IMX519_PIXEL_ARRAY_WIDTH;
+@@ -1246,10 +1264,20 @@ static int imx519_enum_mbus_code(struct
+ {
+ 	struct imx519 *imx519 = to_imx519(sd);
+ 
+-	if (code->index > 0)
++	if (code->pad >= NUM_PADS)
+ 		return -EINVAL;
+ 
+-	code->code = imx519_get_format_code(imx519);
++	if (code->pad == IMAGE_PAD) {
++		if (code->index > 0)
++			return -EINVAL;
++
++		code->code = imx519_get_format_code(imx519);
++	} else {
++		if (code->index > 0)
++			return -EINVAL;
++
++		code->code = MEDIA_BUS_FMT_SENSOR_DATA;
++	}
+ 
+ 	return 0;
+ }
+@@ -1260,16 +1288,29 @@ static int imx519_enum_frame_size(struct
+ {
+ 	struct imx519 *imx519 = to_imx519(sd);
+ 
+-	if (fse->index >= ARRAY_SIZE(supported_modes_10bit))
++	if (fse->pad >= NUM_PADS)
+ 		return -EINVAL;
+ 
+-	if (fse->code != imx519_get_format_code(imx519))
+-		return -EINVAL;
++	if (fse->pad == IMAGE_PAD) {
++		if (fse->index >= ARRAY_SIZE(supported_modes_10bit))
++			return -EINVAL;
++
++		if (fse->code != imx519_get_format_code(imx519))
++			return -EINVAL;
++
++		fse->min_width = supported_modes_10bit[fse->index].width;
++		fse->max_width = fse->min_width;
++		fse->min_height = supported_modes_10bit[fse->index].height;
++		fse->max_height = fse->min_height;
++	} else {
++		if (fse->code != MEDIA_BUS_FMT_SENSOR_DATA || fse->index > 0)
++			return -EINVAL;
+ 
+-	fse->min_width = supported_modes_10bit[fse->index].width;
+-	fse->max_width = fse->min_width;
+-	fse->min_height = supported_modes_10bit[fse->index].height;
+-	fse->max_height = fse->min_height;
++		fse->min_width = IMX519_EMBEDDED_LINE_WIDTH;
++		fse->max_width = fse->min_width;
++		fse->min_height = IMX519_NUM_EMBEDDED_LINES;
++		fse->max_height = fse->min_height;
++	}
+ 
+ 	return 0;
+ }
+@@ -1294,13 +1335,21 @@ static void imx519_update_image_pad_form
+ 	imx519_reset_colorspace(&fmt->format);
+ }
+ 
++static void imx519_update_metadata_pad_format(struct v4l2_subdev_format *fmt)
++{
++	fmt->format.width = IMX519_EMBEDDED_LINE_WIDTH;
++	fmt->format.height = IMX519_NUM_EMBEDDED_LINES;
++	fmt->format.code = MEDIA_BUS_FMT_SENSOR_DATA;
++	fmt->format.field = V4L2_FIELD_NONE;
++}
++
+ static int imx519_get_pad_format(struct v4l2_subdev *sd,
+ 				 struct v4l2_subdev_state *sd_state,
+ 				 struct v4l2_subdev_format *fmt)
+ {
+ 	struct imx519 *imx519 = to_imx519(sd);
+ 
+-	if (fmt->pad != 0)
++	if (fmt->pad >= NUM_PADS)
+ 		return -EINVAL;
+ 
+ 	mutex_lock(&imx519->mutex);
+@@ -1310,12 +1359,19 @@ static int imx519_get_pad_format(struct
+ 			v4l2_subdev_get_try_format(&imx519->sd, sd_state,
+ 						   fmt->pad);
+ 		/* update the code which could change due to vflip or hflip: */
+-		try_fmt->code = imx519_get_format_code(imx519);
++		try_fmt->code = fmt->pad == IMAGE_PAD ?
++				imx519_get_format_code(imx519) :
++				MEDIA_BUS_FMT_SENSOR_DATA;
+ 		fmt->format = *try_fmt;
+ 	} else {
+-		imx519_update_image_pad_format(imx519, imx519->mode,
+-					       fmt);
+-		fmt->format.code = imx519_get_format_code(imx519);
++		if (fmt->pad == IMAGE_PAD) {
++			imx519_update_image_pad_format(imx519, imx519->mode,
++						       fmt);
++			fmt->format.code =
++			       imx519_get_format_code(imx519);
++		} else {
++			imx519_update_metadata_pad_format(fmt);
++		}
+ 	}
+ 
+ 	mutex_unlock(&imx519->mutex);
+@@ -1376,28 +1432,39 @@ static int imx519_set_pad_format(struct
+ 	const struct imx519_mode *mode;
+ 	struct imx519 *imx519 = to_imx519(sd);
+ 
+-	if (fmt->pad != 0)
++	if (fmt->pad >= NUM_PADS)
+ 		return -EINVAL;
+ 
+ 	mutex_lock(&imx519->mutex);
+ 
+-	/* Bayer order varies with flips */
+-	fmt->format.code = imx519_get_format_code(imx519);
++	if (fmt->pad == IMAGE_PAD) {
++		/* Bayer order varies with flips */
++		fmt->format.code = imx519_get_format_code(imx519);
+ 
+-	mode = v4l2_find_nearest_size(supported_modes_10bit,
+-				      ARRAY_SIZE(supported_modes_10bit),
+-				      width, height,
+-				      fmt->format.width,
+-				      fmt->format.height);
+-	imx519_update_image_pad_format(imx519, mode, fmt);
+-	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-		framefmt = v4l2_subdev_get_try_format(sd, sd_state,
+-						      fmt->pad);
+-		*framefmt = fmt->format;
++		mode = v4l2_find_nearest_size(supported_modes_10bit,
++					      ARRAY_SIZE(supported_modes_10bit),
++					      width, height,
++					      fmt->format.width,
++					      fmt->format.height);
++		imx519_update_image_pad_format(imx519, mode, fmt);
++		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++			framefmt = v4l2_subdev_get_try_format(sd, sd_state,
++							      fmt->pad);
++			*framefmt = fmt->format;
++		} else {
++			imx519->mode = mode;
++			imx519->fmt_code = fmt->format.code;
++			imx519_set_framing_limits(imx519);
++		}
+ 	} else {
+-		imx519->mode = mode;
+-		imx519->fmt_code = fmt->format.code;
+-		imx519_set_framing_limits(imx519);
++		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++			framefmt = v4l2_subdev_get_try_format(sd, sd_state,
++							      fmt->pad);
++			*framefmt = fmt->format;
++		} else {
++			/* Only one embedded data mode is supported */
++			imx519_update_metadata_pad_format(fmt);
++		}
+ 	}
+ 
+ 	mutex_unlock(&imx519->mutex);
+@@ -1953,9 +2020,10 @@ static int imx519_probe(struct i2c_clien
+ 	imx519->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ 
+ 	/* Initialize source pads */
+-	imx519->pad.flags = MEDIA_PAD_FL_SOURCE;
++	imx519->pad[IMAGE_PAD].flags = MEDIA_PAD_FL_SOURCE;
++	imx519->pad[METADATA_PAD].flags = MEDIA_PAD_FL_SOURCE;
+ 
+-	ret = media_entity_pads_init(&imx519->sd.entity, 1, &imx519->pad);
++	ret = media_entity_pads_init(&imx519->sd.entity, NUM_PADS, imx519->pad);
+ 	if (ret) {
+ 		dev_err(dev, "failed to init entity pads: %d\n", ret);
+ 		goto error_handler_free;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0523-overlays-Add-imx519-overlay.dts.patch b/target/linux/bcm27xx/patches-5.15/950-0523-overlays-Add-imx519-overlay.dts.patch
new file mode 100644
index 0000000000..bf13523b6a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0523-overlays-Add-imx519-overlay.dts.patch
@@ -0,0 +1,164 @@
+From d8faff7e7581ee3417675e2f64da18ffb831751a Mon Sep 17 00:00:00 2001
+From: Lee Jackson <info@arducam.com>
+Date: Fri, 27 Aug 2021 14:45:43 +0800
+Subject: [PATCH] overlays: Add imx519-overlay.dts
+
+Added overlays for enabling IMX519 and add the
+relevant information to the README.
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |  11 ++
+ arch/arm/boot/dts/overlays/imx519-overlay.dts | 115 ++++++++++++++++++
+ 3 files changed, 127 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/imx519-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -98,6 +98,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	imx290.dtbo \
+ 	imx378.dtbo \
+ 	imx477.dtbo \
++	imx519.dtbo \
+ 	iqaudio-codec.dtbo \
+ 	iqaudio-dac.dtbo \
+ 	iqaudio-dacplus.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1738,6 +1738,17 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+ 
+ 
++Name:   imx519
++Info:   Sony IMX519 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=imx519,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 0)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++
++
+ Name:   iqaudio-codec
+ Info:   Configures the IQaudio Codec audio card
+ Load:   dtoverlay=iqaudio-codec
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx519-overlay.dts
+@@ -0,0 +1,115 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for imx519 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			imx519: imx519@1a {
++				compatible = "sony,imx519";
++				reg = <0x1a>;
++				status = "okay";
++
++				clocks = <&imx519_clk>;
++				clock-names = "xclk";
++
++				VANA-supply = <&cam1_reg>;	/* 2.8v */
++				VDIG-supply = <&imx519_vdig>;	/* 1.8v */
++				VDDL-supply = <&imx519_vddl>;	/* 1.2v */
++
++				rotation = <0>;
++				orientation = <2>;
++
++				port {
++					imx519_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <493500000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port{
++				csi1_ep: endpoint{
++					remote-endpoint = <&imx519_0>;
++					clock-lanes = <0>;
++					data-lanes = <1 2>;
++					clock-noncontinuous;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path="/";
++		__overlay__ {
++			imx519_vdig: fixedregulator@1 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx519_vdig";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++			};
++			imx519_vddl: fixedregulator@2 {
++				compatible = "regulator-fixed";
++				regulator-name = "imx519_vddl";
++				regulator-min-microvolt = <1200000>;
++				regulator-max-microvolt = <1200000>;
++			};
++
++			imx519_clk: camera-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24000000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target = <&cam1_reg>;
++		__overlay__ {
++			status = "okay";
++			regulator-name = "imx519_vana";
++			regulator-min-microvolt = <2800000>;
++			regulator-max-microvolt = <2800000>;
++		};
++	};
++
++	__overrides__ {
++		rotation = <&imx519>,"rotation:0";
++		orientation = <&imx519>,"orientation:0";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0524-dtoverlays-Add-overlay-for-ST7735R-160x128-TinyDRM-d.patch b/target/linux/bcm27xx/patches-5.15/950-0524-dtoverlays-Add-overlay-for-ST7735R-160x128-TinyDRM-d.patch
new file mode 100644
index 0000000000..987bdee290
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0524-dtoverlays-Add-overlay-for-ST7735R-160x128-TinyDRM-d.patch
@@ -0,0 +1,140 @@
+From 67cd4f249333f3de9b449b9e6ebadd08facc6957 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 4 Oct 2021 14:15:38 +0100
+Subject: [PATCH] dtoverlays: Add overlay for ST7735R (160x128) TinyDRM
+ driver
+
+Adds an overlay to configure the TinyDRM driver for ST7735R
+based 160x128 and 128x128 (untested) displays such as the
+Adafruit 1.8" display.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 14 ++++
+ .../dts/overlays/adafruit-st7735r-overlay.dts | 83 +++++++++++++++++++
+ 3 files changed, 98 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/adafruit-st7735r-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -4,6 +4,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += overlay_ma
+ 
+ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	act-led.dtbo \
++	adafruit-st7735r.dtbo \
+ 	adafruit18.dtbo \
+ 	adau1977-adc.dtbo \
+ 	adau7002-simple.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -299,9 +299,23 @@ Params: activelow               Set to "
+                                 REQUIRED
+ 
+ 
++Name:   adafruit-st7735r
++Info:   Overlay for the SPI-connected Adafruit 1.8" 160x128 or 128x128 displays,
++        based on the ST7735R chip.
++        This overlay uses the newer DRM/KMS "Tiny" driver.
++Load:   dtoverlay=adafruit-st7735r,<param>=<val>
++Params: 128x128                 Select the 128x128 driver (default 160x128)
++        rotate                  Display rotation {0,90,180,270} (default 90)
++        speed                   SPI bus speed in Hz (default 4000000)
++        dc_pin                  GPIO pin for D/C (default 24)
++        reset_pin               GPIO pin for RESET (default 25)
++        led_pin                 GPIO used to control backlight (default 18)
++
++
+ Name:   adafruit18
+ Info:   Overlay for the SPI-connected Adafruit 1.8" display (based on the
+         ST7735R chip). It includes support for the "green tab" version.
++        This overlay uses the older fbtft driver.
+ Load:   dtoverlay=adafruit18,<param>=<val>
+ Params: green                   Use the adafruit18_green variant.
+         rotate                  Display rotation {0,90,180,270}
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adafruit-st7735r-overlay.dts
+@@ -0,0 +1,83 @@
++/*
++ * adafruit-st7735r-overlay.dts
++ *
++ * ST7735R based SPI LCD displays. Either
++ * Adafruit 1.8" 160x128
++ *   or
++ * Okaya 1.44" 128x128
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			adafruit_pins: adafruit_pins {
++				brcm,pins = <25 24>;
++				brcm,function = <1>; /* out */
++			};
++			backlight_pins: backlight_pins {
++				brcm,pins = <18>;
++				brcm,function = <1>; /* out */
++			};
++		};
++	};
++
++	fragment@2 {
++		target-path = "/";
++		__overlay__ {
++			af18_backlight: backlight {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 18 GPIO_ACTIVE_HIGH>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&backlight_pins>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			af18: adafruit18@0 {
++				compatible = "jianda,jd-t18003-t01";
++				reg = <0>;
++				spi-max-frequency = <32000000>;
++				dc-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>;
++				reset-gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
++				rotate = <90>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&adafruit_pins>;
++				backlight = <&af18_backlight>;
++			};
++		};
++	};
++
++	__overrides__ {
++		128x128 = <&af18>, "compatible=okaya,rh128128t";
++		speed = <&af18>,"spi-max-frequency:0";
++		rotate = <&af18>,"rotate:0";
++		dc_pin = <&af18>,"dc-gpios:4", <&adafruit_pins>,"brcm,pins:4";
++		reset_pin = <&af18>,"reset-gpios:4",
++			    <&adafruit_pins>,"brcm,pins:0";
++		led_pin = <&af18_backlight>,"gpios:4",
++			  <&backlight_pins>,"brcm,pins:0";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0525-dwc_otg-pay-attention-to-qh-interval-when-rescheduli.patch b/target/linux/bcm27xx/patches-5.15/950-0525-dwc_otg-pay-attention-to-qh-interval-when-rescheduli.patch
new file mode 100644
index 0000000000..9e1cb110db
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0525-dwc_otg-pay-attention-to-qh-interval-when-rescheduli.patch
@@ -0,0 +1,29 @@
+From 4e27de0597024fd7070c04a1bf0af82f1be77191 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Wed, 6 Oct 2021 15:27:53 +0100
+Subject: [PATCH] dwc_otg: pay attention to qh->interval when
+ rescheduling periodic queues
+
+A regression introduced in https://github.com/raspberrypi/linux/pull/3887
+meant that if the newly scheduled transfer immediately returned data, and
+the driver resubmitted a single URB after every transfer, then the effective
+polling interval would end up being approx 1ms.
+
+Use the larger of SCHEDULE_SLOP or the configured endpoint interval.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
+@@ -691,7 +691,7 @@ int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * h
+ 	} else {
+ 		/* If the QH wasn't in a schedule, then sched_frame is stale. */
+ 		qh->sched_frame = dwc_frame_num_inc(dwc_otg_hcd_get_frame_number(hcd),
+-							SCHEDULE_SLOP);
++						    max_t(uint32_t, qh->interval, SCHEDULE_SLOP));
+ 		status = schedule_periodic(hcd, qh);
+ 		qh->start_split_frame = qh->sched_frame;
+ 		if ( !hcd->periodic_qh_count ) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0526-Hifiberry-DAC-ADCPro-DT-overlay-add-optional-headpho.patch b/target/linux/bcm27xx/patches-5.15/950-0526-Hifiberry-DAC-ADCPro-DT-overlay-add-optional-headpho.patch
new file mode 100644
index 0000000000..eff85e125a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0526-Hifiberry-DAC-ADCPro-DT-overlay-add-optional-headpho.patch
@@ -0,0 +1,29 @@
+From b1a85e3d9bdb3cc4d850b110ce08331fbc8e9172 Mon Sep 17 00:00:00 2001
+From: Joerg Schambacher <joerg@hifiberry.com>
+Date: Wed, 6 Oct 2021 17:19:58 +0200
+Subject: [PATCH] Hifiberry DAC+ADCPro DT overlay: add optional
+ headphone amp
+
+This is a copy of the approach from our DAC+ driver.
+It allows to probe (and activate) an optional TPA6130A2 headphone
+amplifier.
+
+Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
+---
+ .../boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts    | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
+@@ -43,6 +43,11 @@
+ 				clocks = <&dacpro_osc>;
+ 				status = "okay";
+ 			};
++			hpamp: hpamp@60 {
++				compatible = "ti,tpa6130a2";
++				reg = <0x60>;
++				status = "disabled";
++			};
+ 		};
+ 	};
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0527-Hifiberry-DAC-ADCPro-adding-optional-headphone-amp-c.patch b/target/linux/bcm27xx/patches-5.15/950-0527-Hifiberry-DAC-ADCPro-adding-optional-headphone-amp-c.patch
new file mode 100644
index 0000000000..02a60a13e4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0527-Hifiberry-DAC-ADCPro-adding-optional-headphone-amp-c.patch
@@ -0,0 +1,143 @@
+From 74de23a947ad5964b25e9f9f15329d3174488fea Mon Sep 17 00:00:00 2001
+From: Joerg Schambacher <joerg@hifiberry.com>
+Date: Wed, 6 Oct 2021 17:21:07 +0200
+Subject: [PATCH] Hifiberry DAC+ADCPro: adding optional headphone amp
+ control
+
+This is a copy of the code and approach from our DAC+ driver.
+It allows to probe (and activate) an optional TPA6130A2 headphone
+amplifier. Updated email address.
+
+Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
+---
+ sound/soc/bcm/Kconfig                   |  3 +-
+ sound/soc/bcm/hifiberry_dacplusadcpro.c | 74 ++++++++++++++++++++++++-
+ 2 files changed, 73 insertions(+), 4 deletions(-)
+
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -79,7 +79,8 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
+         tristate "Support for HifiBerry DAC+ADC PRO"
+         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+         select SND_SOC_PCM512x_I2C
+-	select SND_SOC_PCM186X_I2C
++        select SND_SOC_PCM186X_I2C
++        select SND_SOC_TPA6130A2
+         select COMMON_CLK_HIFIBERRY_DACPRO
+         help
+          Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
+--- a/sound/soc/bcm/hifiberry_dacplusadcpro.c
++++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
+@@ -4,8 +4,8 @@
+  * Author:	Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
+  *		Copyright 2014-2015
+  *		based on code by Florian Meier <florian.meier@koalo.de>
+- *		ADC added by Joerg Schambacher <joerg@i2audio.com>
+- *		Copyright 2018-19
++ *		ADC, HP added by Joerg Schambacher <joerg@hifiberry.com>
++ *		Copyright 2018-21
+  *
+  * This program is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU General Public License
+@@ -26,6 +26,7 @@
+ #include <linux/of.h>
+ #include <linux/slab.h>
+ #include <linux/delay.h>
++#include <linux/i2c.h>
+ 
+ #include <sound/core.h>
+ #include <sound/pcm.h>
+@@ -468,6 +469,15 @@ static struct snd_soc_dai_link snd_rpi_h
+ },
+ };
+ 
++/* aux device for optional headphone amp */
++static struct snd_soc_aux_dev hifiberry_dacplusadcpro_aux_devs[] = {
++	{
++		.dlc = {
++			.name = "tpa6130a2.1-0060",
++		},
++	},
++};
++
+ /* audio machine driver */
+ static struct snd_soc_card snd_rpi_hifiberry_dacplusadcpro = {
+ 	.name         = "snd_rpi_hifiberry_dacplusadcpro",
+@@ -477,10 +487,68 @@ static struct snd_soc_card snd_rpi_hifib
+ 	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadcpro_dai),
+ };
+ 
++static int hb_hp_detect(void)
++{
++	struct i2c_adapter *adap = i2c_get_adapter(1);
++	int ret;
++	struct i2c_client tpa_i2c_client = {
++		.addr = 0x60,
++		.adapter = adap,
++	};
++
++	if (!adap)
++		return -EPROBE_DEFER;	/* I2C module not yet available */
++
++	ret = i2c_smbus_read_byte(&tpa_i2c_client) >= 0;
++	i2c_put_adapter(adap);
++	return ret;
++};
++
++static struct property tpa_enable_prop = {
++	       .name = "status",
++	       .length = 4 + 1, /* length 'okay' + 1 */
++	       .value = "okay",
++	};
++
+ static int snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev)
+ {
+ 	int ret = 0, i = 0;
+ 	struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro;
++	struct device_node *tpa_node;
++	struct property *tpa_prop;
++	struct of_changeset ocs;
++	int len;
++
++	/* probe for head phone amp */
++	ret = hb_hp_detect();
++	if (ret < 0)
++		return ret;
++	if (ret) {
++		card->aux_dev = hifiberry_dacplusadcpro_aux_devs;
++		card->num_aux_devs =
++				ARRAY_SIZE(hifiberry_dacplusadcpro_aux_devs);
++		tpa_node = of_find_compatible_node(NULL, NULL, "ti,tpa6130a2");
++		tpa_prop = of_find_property(tpa_node, "status", &len);
++
++		if (strcmp((char *)tpa_prop->value, "okay")) {
++			/* and activate headphone using change_sets */
++			dev_info(&pdev->dev, "activating headphone amplifier");
++			of_changeset_init(&ocs);
++			ret = of_changeset_update_property(&ocs, tpa_node,
++							&tpa_enable_prop);
++			if (ret) {
++				dev_err(&pdev->dev,
++				"cannot activate headphone amplifier\n");
++				return -ENODEV;
++			}
++			ret = of_changeset_apply(&ocs);
++			if (ret) {
++				dev_err(&pdev->dev,
++				"cannot activate headphone amplifier\n");
++				return -ENODEV;
++			}
++		}
++	}
+ 
+ 	snd_rpi_hifiberry_dacplusadcpro.dev = &pdev->dev;
+ 	if (pdev->dev.of_node) {
+@@ -531,7 +599,7 @@ static struct platform_driver snd_rpi_hi
+ 
+ module_platform_driver(snd_rpi_hifiberry_dacplusadcpro_driver);
+ 
+-MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
++MODULE_AUTHOR("Joerg Schambacher <joerg@hifiberry.com>");
+ MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
+ MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
+ MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0528-drivers-gpio-Add-a-driver-that-wraps-the-PWM-API-as-.patch b/target/linux/bcm27xx/patches-5.15/950-0528-drivers-gpio-Add-a-driver-that-wraps-the-PWM-API-as-.patch
new file mode 100644
index 0000000000..bd62821c01
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0528-drivers-gpio-Add-a-driver-that-wraps-the-PWM-API-as-.patch
@@ -0,0 +1,192 @@
+From cc09cd9804f681ae3efec1832f2be890d9be467d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 14 Oct 2021 11:09:18 +0100
+Subject: [PATCH] drivers/gpio: Add a driver that wraps the PWM API as
+ a GPIO controller
+
+For cases where spare PWM outputs are available, but are desired
+to be addressed a standard outputs instead.
+Wraps a PWM channel as a new GPIO chip with the one output.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpio/Kconfig    |   8 +++
+ drivers/gpio/Makefile   |   1 +
+ drivers/gpio/gpio-pwm.c | 144 ++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 153 insertions(+)
+ create mode 100644 drivers/gpio/gpio-pwm.c
+
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -485,6 +485,14 @@ config GPIO_PMIC_EIC_SPRD
+ 	help
+ 	  Say yes here to support Spreadtrum PMIC EIC device.
+ 
++config GPIO_PWM
++	tristate "PWM chip GPIO"
++	depends on OF_GPIO
++	depends on PWM
++	help
++	  Turn on support for exposing a PWM chip as a GPIO
++	  driver.
++
+ config GPIO_PXA
+ 	bool "PXA GPIO support"
+ 	depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -122,6 +122,7 @@ obj-$(CONFIG_GPIO_PCI_IDIO_16)		+= gpio-
+ obj-$(CONFIG_GPIO_PISOSR)		+= gpio-pisosr.o
+ obj-$(CONFIG_GPIO_PL061)		+= gpio-pl061.o
+ obj-$(CONFIG_GPIO_PMIC_EIC_SPRD)	+= gpio-pmic-eic-sprd.o
++obj-$(CONFIG_GPIO_PWM)			+= gpio-pwm.o
+ obj-$(CONFIG_GPIO_PXA)			+= gpio-pxa.o
+ obj-$(CONFIG_GPIO_RASPBERRYPI_EXP)	+= gpio-raspberrypi-exp.o
+ obj-$(CONFIG_GPIO_RC5T583)		+= gpio-rc5t583.o
+--- /dev/null
++++ b/drivers/gpio/gpio-pwm.c
+@@ -0,0 +1,144 @@
++// SPDX-License-Identifier: GPL-2.0+
++/*
++ * GPIO driver wrapping PWM API
++ *
++ * PWM 0% and PWM 100% are equivalent to digital GPIO
++ * outputs, and there are times where it is useful to use
++ * PWM outputs as straight GPIOs (eg outputs of NXP PCA9685
++ * I2C PWM chip). This driver wraps the PWM API as a GPIO
++ * controller.
++ *
++ * Copyright (C) 2021 Raspberry Pi (Trading) Ltd.
++ */
++
++#include <linux/err.h>
++#include <linux/gpio/driver.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/pwm.h>
++
++struct pwm_gpio {
++	struct gpio_chip gc;
++	struct pwm_device **pwm;
++};
++
++static int pwm_gpio_get_direction(struct gpio_chip *gc, unsigned int off)
++{
++	return GPIO_LINE_DIRECTION_OUT;
++}
++
++static void pwm_gpio_set(struct gpio_chip *gc, unsigned int off, int val)
++{
++	struct pwm_gpio *pwm_gpio = gpiochip_get_data(gc);
++	struct pwm_state state;
++
++	pwm_get_state(pwm_gpio->pwm[off], &state);
++	state.duty_cycle = val ? state.period : 0;
++	pwm_apply_state(pwm_gpio->pwm[off], &state);
++}
++
++static int pwm_gpio_parse_dt(struct pwm_gpio *pwm_gpio,
++			     struct device *dev)
++{
++	struct device_node *node = dev->of_node;
++	struct pwm_state state;
++	int ret = 0, i, num_gpios;
++	const char *pwm_name;
++
++	if (!node)
++		return -ENODEV;
++
++	num_gpios = of_property_count_strings(node, "pwm-names");
++	if (num_gpios <= 0)
++		return 0;
++
++	pwm_gpio->pwm = devm_kzalloc(dev,
++				     sizeof(*pwm_gpio->pwm) * num_gpios,
++				     GFP_KERNEL);
++	if (!pwm_gpio->pwm)
++		return -ENOMEM;
++
++	for (i = 0; i < num_gpios; i++) {
++		ret = of_property_read_string_index(node, "pwm-names", i,
++						    &pwm_name);
++		if (ret) {
++			dev_err(dev, "unable to get pwm device index %d, name %s",
++				i, pwm_name);
++			goto error;
++		}
++
++		pwm_gpio->pwm[i] = devm_pwm_get(dev, pwm_name);
++		if (IS_ERR(pwm_gpio->pwm[i])) {
++			ret = PTR_ERR(pwm_gpio->pwm[i]);
++			if (ret != -EPROBE_DEFER)
++				dev_err(dev, "unable to request PWM\n");
++			goto error;
++		}
++
++		/* Sync up PWM state. */
++		pwm_init_state(pwm_gpio->pwm[i], &state);
++
++		state.duty_cycle = 0;
++		pwm_apply_state(pwm_gpio->pwm[i], &state);
++	}
++
++	pwm_gpio->gc.ngpio = num_gpios;
++
++error:
++	return ret;
++}
++
++static int pwm_gpio_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct pwm_gpio *pwm_gpio;
++	int ret;
++
++	pwm_gpio = devm_kzalloc(dev, sizeof(*pwm_gpio), GFP_KERNEL);
++	if (!pwm_gpio)
++		return -ENOMEM;
++
++	pwm_gpio->gc.parent = dev;
++	pwm_gpio->gc.label = "pwm-gpio";
++	pwm_gpio->gc.owner = THIS_MODULE;
++	pwm_gpio->gc.of_node = dev->of_node;
++	pwm_gpio->gc.base = -1;
++
++	pwm_gpio->gc.get_direction = pwm_gpio_get_direction;
++	pwm_gpio->gc.set = pwm_gpio_set;
++	pwm_gpio->gc.can_sleep = true;
++
++	ret = pwm_gpio_parse_dt(pwm_gpio, dev);
++	if (ret)
++		return ret;
++
++	if (!pwm_gpio->gc.ngpio)
++		return 0;
++
++	return devm_gpiochip_add_data(dev, &pwm_gpio->gc, pwm_gpio);
++}
++
++static int pwm_gpio_remove(struct platform_device *pdev)
++{
++	return 0;
++}
++
++static const struct of_device_id pwm_gpio_of_match[] = {
++	{ .compatible = "pwm-gpio" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, pwm_gpio_of_match);
++
++static struct platform_driver pwm_gpio_driver = {
++	.driver	= {
++		.name		= "pwm-gpio",
++		.of_match_table	= of_match_ptr(pwm_gpio_of_match),
++	},
++	.probe	= pwm_gpio_probe,
++	.remove	= pwm_gpio_remove,
++};
++module_platform_driver(pwm_gpio_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
++MODULE_DESCRIPTION("PWM GPIO driver");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0529-rtc-pcf85063-Always-clear-EXT_TEST-from-set_time.patch b/target/linux/bcm27xx/patches-5.15/950-0529-rtc-pcf85063-Always-clear-EXT_TEST-from-set_time.patch
new file mode 100644
index 0000000000..e8a6b41821
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0529-rtc-pcf85063-Always-clear-EXT_TEST-from-set_time.patch
@@ -0,0 +1,36 @@
+From c3cfd27eb16d2fc12cfa77e6cd5f9eb352403c16 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 15 Oct 2021 11:45:36 +0100
+Subject: [PATCH] rtc: pcf85063: Always clear EXT_TEST from set_time
+
+Power-on reset after the insertion of a battery does not always complete
+successfully, leading to corrupted register content. The EXT_TEST bit
+will stop the clock from running, but currently the driver will never
+recover.
+
+Safely handle the erroneous state by clearing EXT_TEST as part of the
+usual set_time method.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/rtc/rtc-pcf85063.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/rtc/rtc-pcf85063.c
++++ b/drivers/rtc/rtc-pcf85063.c
+@@ -34,6 +34,7 @@
+ #define PCF85063_REG_CTRL1		0x00 /* status */
+ #define PCF85063_REG_CTRL1_CAP_SEL	BIT(0)
+ #define PCF85063_REG_CTRL1_STOP		BIT(5)
++#define PCF85063_REG_CTRL1_EXT_TEST	BIT(7)
+ 
+ #define PCF85063_REG_CTRL2		0x01
+ #define PCF85063_CTRL2_AF		BIT(6)
+@@ -117,6 +118,7 @@ static int pcf85063_rtc_set_time(struct
+ 	 * reset state until all time/date registers are written
+ 	 */
+ 	rc = regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL1,
++				PCF85063_REG_CTRL1_EXT_TEST |
+ 				PCF85063_REG_CTRL1_STOP,
+ 				PCF85063_REG_CTRL1_STOP);
+ 	if (rc)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0530-char-vcio-Rewrite-as-a-firmware-node-child.patch b/target/linux/bcm27xx/patches-5.15/950-0530-char-vcio-Rewrite-as-a-firmware-node-child.patch
new file mode 100644
index 0000000000..88596312f8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0530-char-vcio-Rewrite-as-a-firmware-node-child.patch
@@ -0,0 +1,237 @@
+From 512d9fadc272271e1e8e9bc81d445883940f81ca Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 11 Oct 2021 17:33:05 +0100
+Subject: [PATCH] char: vcio: Rewrite as a firmware node child
+
+The old vcio driver is a simple character device that manually locates
+the firmware driver. Initialising it before the firmware driver causes
+a failure, and no retries are attempted.
+
+Rewrite vcio as a platform driver that depends on a DT node for its
+instantiation and the location of the firmware driver, making use of
+the miscdevice framework to reduce the code size.
+
+N.B. Using miscdevice changes the udev SUBSYSTEM string, so a change
+to the companion udev rule is required in order to continue to set
+the correct device permissions, e.g.:
+
+    KERNEL="vcio", GROUP="video", MODE="0660"
+
+See: https://github.com/raspberrypi/linux/issues/4620
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/char/broadcom/vcio.c | 133 ++++++++++++++++-------------------
+ 1 file changed, 62 insertions(+), 71 deletions(-)
+
+--- a/drivers/char/broadcom/vcio.c
++++ b/drivers/char/broadcom/vcio.c
+@@ -1,6 +1,7 @@
+ /*
+  *  Copyright (C) 2010 Broadcom
+  *  Copyright (C) 2015 Noralf Trønnes
++ *  Copyright (C) 2021 Raspberry Pi (Trading) Ltd.
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License version 2 as
+@@ -8,8 +9,6 @@
+  *
+  */
+ 
+-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+-
+ #include <linux/cdev.h>
+ #include <linux/device.h>
+ #include <linux/fs.h>
+@@ -19,24 +18,22 @@
+ #include <linux/slab.h>
+ #include <linux/uaccess.h>
+ #include <linux/compat.h>
++#include <linux/miscdevice.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+-#define MBOX_CHAN_PROPERTY 8
+-
++#define MODULE_NAME "vcio"
+ #define VCIO_IOC_MAGIC 100
+ #define IOCTL_MBOX_PROPERTY _IOWR(VCIO_IOC_MAGIC, 0, char *)
+ #ifdef CONFIG_COMPAT
+ #define IOCTL_MBOX_PROPERTY32 _IOWR(VCIO_IOC_MAGIC, 0, compat_uptr_t)
+ #endif
+ 
+-static struct {
+-	dev_t devt;
+-	struct cdev cdev;
+-	struct class *class;
++struct vcio_data {
+ 	struct rpi_firmware *fw;
+-} vcio;
++	struct miscdevice misc_dev;
++};
+ 
+-static int vcio_user_property_list(void *user)
++static int vcio_user_property_list(struct vcio_data *vcio, void *user)
+ {
+ 	u32 *buf, size;
+ 	int ret;
+@@ -55,7 +52,7 @@ static int vcio_user_property_list(void
+ 	}
+ 
+ 	/* Strip off protocol encapsulation */
+-	ret = rpi_firmware_property_list(vcio.fw, &buf[2], size - 12);
++	ret = rpi_firmware_property_list(vcio->fw, &buf[2], size - 12);
+ 	if (ret) {
+ 		kfree(buf);
+ 		return ret;
+@@ -87,9 +84,12 @@ static int vcio_device_release(struct in
+ static long vcio_device_ioctl(struct file *file, unsigned int ioctl_num,
+ 			      unsigned long ioctl_param)
+ {
++	struct vcio_data *vcio = container_of(file->private_data,
++					      struct vcio_data, misc_dev);
++
+ 	switch (ioctl_num) {
+ 	case IOCTL_MBOX_PROPERTY:
+-		return vcio_user_property_list((void *)ioctl_param);
++		return vcio_user_property_list(vcio, (void *)ioctl_param);
+ 	default:
+ 		pr_err("unknown ioctl: %x\n", ioctl_num);
+ 		return -EINVAL;
+@@ -100,9 +100,12 @@ static long vcio_device_ioctl(struct fil
+ static long vcio_device_compat_ioctl(struct file *file, unsigned int ioctl_num,
+ 				     unsigned long ioctl_param)
+ {
++	struct vcio_data *vcio = container_of(file->private_data,
++					      struct vcio_data, misc_dev);
++
+ 	switch (ioctl_num) {
+ 	case IOCTL_MBOX_PROPERTY32:
+-		return vcio_user_property_list(compat_ptr(ioctl_param));
++		return vcio_user_property_list(vcio, compat_ptr(ioctl_param));
+ 	default:
+ 		pr_err("unknown ioctl: %x\n", ioctl_num);
+ 		return -EINVAL;
+@@ -119,77 +122,65 @@ const struct file_operations vcio_fops =
+ 	.release = vcio_device_release,
+ };
+ 
+-static int __init vcio_init(void)
++static int vcio_probe(struct platform_device *pdev)
+ {
+-	struct device_node *np;
+-	static struct device *dev;
+-	int ret;
+-
+-	np = of_find_compatible_node(NULL, NULL,
+-				     "raspberrypi,bcm2835-firmware");
+-	if (!of_device_is_available(np))
+-		return -ENODEV;
+-
+-	vcio.fw = rpi_firmware_get(np);
+-	if (!vcio.fw)
+-		return -ENODEV;
+-
+-	ret = alloc_chrdev_region(&vcio.devt, 0, 1, "vcio");
+-	if (ret) {
+-		pr_err("failed to allocate device number\n");
+-		return ret;
+-	}
+-
+-	cdev_init(&vcio.cdev, &vcio_fops);
+-	vcio.cdev.owner = THIS_MODULE;
+-	ret = cdev_add(&vcio.cdev, vcio.devt, 1);
+-	if (ret) {
+-		pr_err("failed to register device\n");
+-		goto err_unregister_chardev;
+-	}
++	struct device *dev = &pdev->dev;
++	struct device_node *np = dev->of_node;
++	struct device_node *fw_node;
++	struct rpi_firmware *fw;
++	struct vcio_data *vcio;
+ 
+-	/*
+-	 * Create sysfs entries
+-	 * 'bcm2708_vcio' is used for backwards compatibility so we don't break
+-	 * userspace. Raspian has a udev rule that changes the permissions.
+-	 */
+-	vcio.class = class_create(THIS_MODULE, "bcm2708_vcio");
+-	if (IS_ERR(vcio.class)) {
+-		ret = PTR_ERR(vcio.class);
+-		pr_err("failed to create class\n");
+-		goto err_cdev_del;
++	fw_node = of_get_parent(np);
++	if (!fw_node) {
++		dev_err(dev, "Missing firmware node\n");
++		return -ENOENT;
+ 	}
+ 
+-	dev = device_create(vcio.class, NULL, vcio.devt, NULL, "vcio");
+-	if (IS_ERR(dev)) {
+-		ret = PTR_ERR(dev);
+-		pr_err("failed to create device\n");
+-		goto err_class_destroy;
+-	}
++	fw = rpi_firmware_get(fw_node);
++	of_node_put(fw_node);
++	if (!fw)
++		return -EPROBE_DEFER;
+ 
+-	return 0;
++	vcio = devm_kzalloc(dev, sizeof(struct vcio_data), GFP_KERNEL);
++	if (!vcio)
++		return -ENOMEM;
+ 
+-err_class_destroy:
+-	class_destroy(vcio.class);
+-err_cdev_del:
+-	cdev_del(&vcio.cdev);
+-err_unregister_chardev:
+-	unregister_chrdev_region(vcio.devt, 1);
++	vcio->fw = fw;
++	vcio->misc_dev.fops = &vcio_fops;
++	vcio->misc_dev.minor = MISC_DYNAMIC_MINOR;
++	vcio->misc_dev.name = "vcio";
++	vcio->misc_dev.parent = dev;
+ 
+-	return ret;
++	return misc_register(&vcio->misc_dev);
+ }
+-module_init(vcio_init);
+ 
+-static void __exit vcio_exit(void)
++static int vcio_remove(struct platform_device *pdev)
+ {
+-	device_destroy(vcio.class, vcio.devt);
+-	class_destroy(vcio.class);
+-	cdev_del(&vcio.cdev);
+-	unregister_chrdev_region(vcio.devt, 1);
++	struct device *dev = &pdev->dev;
++
++	misc_deregister(dev_get_drvdata(dev));
++	return 0;
+ }
+-module_exit(vcio_exit);
++
++static const struct of_device_id vcio_ids[] = {
++	{ .compatible = "raspberrypi,vcio" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, vcio_ids);
++
++static struct platform_driver vcio_driver = {
++	.driver	= {
++		.name		= MODULE_NAME,
++		.of_match_table	= of_match_ptr(vcio_ids),
++	},
++	.probe	= vcio_probe,
++	.remove = vcio_remove,
++};
++
++module_platform_driver(vcio_driver);
+ 
+ MODULE_AUTHOR("Gray Girling");
+ MODULE_AUTHOR("Noralf Trønnes");
+ MODULE_DESCRIPTION("Mailbox userspace access");
+ MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:rpi-vcio");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0531-ARM-dts-Make-vcio-a-child-of-the-firmware-node.patch b/target/linux/bcm27xx/patches-5.15/950-0531-ARM-dts-Make-vcio-a-child-of-the-firmware-node.patch
new file mode 100644
index 0000000000..c1adbb8df3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0531-ARM-dts-Make-vcio-a-child-of-the-firmware-node.patch
@@ -0,0 +1,30 @@
+From 52186b585d8834085c14fc088f1a36cd6184365c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 12 Oct 2021 09:59:54 +0100
+Subject: [PATCH] ARM: dts: Make vcio a child of the firmware node
+
+In order to resolve a potential startup order bug, the vcio driver has
+been rewritten as a platform driver that depends on a DT node for
+its instantiation and to locate the firmware driver.
+
+Add that DT node.
+
+See: https://github.com/raspberrypi/linux/issues/4620
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm270x-rpi.dtsi | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm270x-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi
+@@ -152,3 +152,9 @@
+ 		status = "disabled";
+ 	};
+ };
++
++&firmware {
++	vcio: vcio {
++		compatible = "raspberrypi,vcio";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0532-ARM-dts-bcm2835_audio-missing-firmware-reference.patch b/target/linux/bcm27xx/patches-5.15/950-0532-ARM-dts-bcm2835_audio-missing-firmware-reference.patch
new file mode 100644
index 0000000000..a3df2d9caa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0532-ARM-dts-bcm2835_audio-missing-firmware-reference.patch
@@ -0,0 +1,29 @@
+From ad987063207b77763e541f57535ea6b681e4ef3b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 18 Oct 2021 11:12:42 +0100
+Subject: [PATCH] ARM: dts: bcm2835_audio missing firmware reference
+
+The firmware driver has been changed to count its clients. An earlier
+commit removed the downstream patch permitting the hacky technique of
+passing NULL to rpi_firmware_get to pick up the last instace, but
+failed to add the necessary "firmware" property to the bcm2835_audio
+node. Correct that omission.
+
+See: https://github.com/raspberrypi/linux/issues/4634
+     https://github.com/raspberrypi/linux/issues/4635
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm270x-rpi.dtsi | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/boot/dts/bcm270x-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi
+@@ -148,6 +148,7 @@
+ 	/* Onboard audio */
+ 	audio: bcm2835_audio {
+ 		compatible = "brcm,bcm2835-audio";
++		brcm,firmware = <&firmware>;
+ 		brcm,pwm-channels = <8>;
+ 		status = "disabled";
+ 	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0533-ARM-dts-Delete-vestigial-vcsm-node.patch b/target/linux/bcm27xx/patches-5.15/950-0533-ARM-dts-Delete-vestigial-vcsm-node.patch
new file mode 100644
index 0000000000..c8c6eb2c6c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0533-ARM-dts-Delete-vestigial-vcsm-node.patch
@@ -0,0 +1,25 @@
+From 151458604b3cf70f55fd7fe66aea22856037f707 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 18 Oct 2021 11:13:35 +0100
+Subject: [PATCH] ARM: dts: Delete vestigial vcsm node
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm270x-rpi.dtsi | 6 ------
+ 1 file changed, 6 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm270x-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi
+@@ -65,12 +65,6 @@
+ 			status = "okay";
+ 		};
+ 
+-		vcsm: vcsm {
+-			compatible = "raspberrypi,bcm2835-vcsm";
+-			firmware = <&firmware>;
+-			status = "okay";
+-		};
+-
+ 		/* External sound card */
+ 		sound: sound {
+ 			status = "disabled";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0534-gpio-bcm-virt-Fix-the-get-method.patch b/target/linux/bcm27xx/patches-5.15/950-0534-gpio-bcm-virt-Fix-the-get-method.patch
new file mode 100644
index 0000000000..9c12ff483a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0534-gpio-bcm-virt-Fix-the-get-method.patch
@@ -0,0 +1,29 @@
+From 6e6d30ab723843fea8d9df368b35e89327f33c11 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 19 Oct 2021 11:23:43 +0100
+Subject: [PATCH] gpio: bcm-virt: Fix the get() method
+
+The get() method does not understand the on-the-wire encoding of the
+remote GPIO states, thinking they are simple on/off bits when they are
+really pairs of 16-bit counts. Rewrite the get() handler to return the
+value last written, which will eventually match the actual GPIO state
+if there are no other changes.
+
+See: https://github.com/raspberrypi/linux/issues/4638
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/gpio/gpio-bcm-virt.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpio/gpio-bcm-virt.c
++++ b/drivers/gpio/gpio-bcm-virt.c
+@@ -49,7 +49,7 @@ static int brcmvirt_gpio_get(struct gpio
+ 	unsigned v;
+ 	gpio = container_of(gc, struct brcmvirt_gpio, gc);
+ 	v = readl(gpio->ts_base + off);
+-	return (v >> off) & 1;
++	return (s16)((v >> 16) - v) > 0;
+ }
+ 
+ static void brcmvirt_gpio_set(struct gpio_chip *gc, unsigned off, int val)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0535-media-i2c-imx219-Sensor-should-report-RAW-color-spac.patch b/target/linux/bcm27xx/patches-5.15/950-0535-media-i2c-imx219-Sensor-should-report-RAW-color-spac.patch
new file mode 100644
index 0000000000..6a4f26252f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0535-media-i2c-imx219-Sensor-should-report-RAW-color-spac.patch
@@ -0,0 +1,33 @@
+From 6af6b6388de431727161a40770f69c028bff5eb3 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 21 Oct 2021 14:41:55 +0100
+Subject: [PATCH] media: i2c: imx219: Sensor should report RAW color
+ space
+
+Tested on Raspberry Pi running libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx219.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/media/i2c/imx219.c
++++ b/drivers/media/i2c/imx219.c
+@@ -674,7 +674,7 @@ static void imx219_set_default_format(st
+ 
+ 	fmt = &imx219->fmt;
+ 	fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10;
+-	fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->colorspace = V4L2_COLORSPACE_RAW;
+ 	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ 	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ 							  fmt->colorspace,
+@@ -844,7 +844,7 @@ static int imx219_enum_frame_size(struct
+ 
+ static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
+ {
+-	fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->colorspace = V4L2_COLORSPACE_RAW;
+ 	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ 	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ 							  fmt->colorspace,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0536-media-i2c-imx290-Sensor-should-report-RAW-color-spac.patch b/target/linux/bcm27xx/patches-5.15/950-0536-media-i2c-imx290-Sensor-should-report-RAW-color-spac.patch
new file mode 100644
index 0000000000..5ea42fa85f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0536-media-i2c-imx290-Sensor-should-report-RAW-color-spac.patch
@@ -0,0 +1,24 @@
+From 257c415d35c2941855b8429bff591487551e8678 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 21 Oct 2021 14:44:01 +0100
+Subject: [PATCH] media: i2c: imx290: Sensor should report RAW color
+ space
+
+Tested on Raspberry Pi running libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx290.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx290.c
++++ b/drivers/media/i2c/imx290.c
+@@ -885,7 +885,7 @@ static int imx290_set_fmt(struct v4l2_su
+ 
+ 	fmt->format.code = imx290->formats[i].code;
+ 	fmt->format.field = V4L2_FIELD_NONE;
+-	fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->format.colorspace = V4L2_COLORSPACE_RAW;
+ 	fmt->format.ycbcr_enc =
+ 			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
+ 	fmt->format.quantization =
diff --git a/target/linux/bcm27xx/patches-5.15/950-0537-media-i2c-imx477-Sensor-should-report-RAW-color-spac.patch b/target/linux/bcm27xx/patches-5.15/950-0537-media-i2c-imx477-Sensor-should-report-RAW-color-spac.patch
new file mode 100644
index 0000000000..9f2f1b00fd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0537-media-i2c-imx477-Sensor-should-report-RAW-color-spac.patch
@@ -0,0 +1,24 @@
+From 6a0b7fefa963ad413f6b4554138aac9107995daf Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 21 Oct 2021 14:44:43 +0100
+Subject: [PATCH] media: i2c: imx477: Sensor should report RAW color
+ space
+
+Tested on Raspberry Pi running libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx477.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -1471,7 +1471,7 @@ static int imx477_enum_frame_size(struct
+ 
+ static void imx477_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
+ {
+-	fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->colorspace = V4L2_COLORSPACE_RAW;
+ 	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ 	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ 							  fmt->colorspace,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0538-media-i2c-imx519-Sensor-should-report-RAW-color-spac.patch b/target/linux/bcm27xx/patches-5.15/950-0538-media-i2c-imx519-Sensor-should-report-RAW-color-spac.patch
new file mode 100644
index 0000000000..6a026d259a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0538-media-i2c-imx519-Sensor-should-report-RAW-color-spac.patch
@@ -0,0 +1,24 @@
+From 083e5464b828cfbcb8c2a38a776267ce575d157d Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 21 Oct 2021 14:45:07 +0100
+Subject: [PATCH] media: i2c: imx519: Sensor should report RAW color
+ space
+
+Tested on Raspberry Pi running libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx519.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx519.c
++++ b/drivers/media/i2c/imx519.c
+@@ -1317,7 +1317,7 @@ static int imx519_enum_frame_size(struct
+ 
+ static void imx519_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
+ {
+-	fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->colorspace = V4L2_COLORSPACE_RAW;
+ 	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ 	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ 							  fmt->colorspace,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0539-media-i2c-ov5647-Sensor-should-report-RAW-color-spac.patch b/target/linux/bcm27xx/patches-5.15/950-0539-media-i2c-ov5647-Sensor-should-report-RAW-color-spac.patch
new file mode 100644
index 0000000000..ca85d29f2e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0539-media-i2c-ov5647-Sensor-should-report-RAW-color-spac.patch
@@ -0,0 +1,51 @@
+From e3f8ed2721c6de37fa72e596cc956fc06d479473 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 21 Oct 2021 14:47:00 +0100
+Subject: [PATCH] media: i2c: ov5647: Sensor should report RAW color
+ space
+
+Tested on Raspberry Pi running libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -494,7 +494,7 @@ static const struct ov5647_mode ov5647_m
+ 	{
+ 		.format = {
+ 			.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
+-			.colorspace	= V4L2_COLORSPACE_SRGB,
++			.colorspace	= V4L2_COLORSPACE_RAW,
+ 			.field		= V4L2_FIELD_NONE,
+ 			.width		= 2592,
+ 			.height		= 1944
+@@ -515,7 +515,7 @@ static const struct ov5647_mode ov5647_m
+ 	{
+ 		.format = {
+ 			.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
+-			.colorspace	= V4L2_COLORSPACE_SRGB,
++			.colorspace	= V4L2_COLORSPACE_RAW,
+ 			.field		= V4L2_FIELD_NONE,
+ 			.width		= 1920,
+ 			.height		= 1080
+@@ -536,7 +536,7 @@ static const struct ov5647_mode ov5647_m
+ 	{
+ 		.format = {
+ 			.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
+-			.colorspace	= V4L2_COLORSPACE_SRGB,
++			.colorspace	= V4L2_COLORSPACE_RAW,
+ 			.field		= V4L2_FIELD_NONE,
+ 			.width		= 1296,
+ 			.height		= 972
+@@ -557,7 +557,7 @@ static const struct ov5647_mode ov5647_m
+ 	{
+ 		.format = {
+ 			.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
+-			.colorspace	= V4L2_COLORSPACE_SRGB,
++			.colorspace	= V4L2_COLORSPACE_RAW,
+ 			.field		= V4L2_FIELD_NONE,
+ 			.width		= 640,
+ 			.height		= 480
diff --git a/target/linux/bcm27xx/patches-5.15/950-0540-media-i2c-ov9281-Sensor-should-report-RAW-color-spac.patch b/target/linux/bcm27xx/patches-5.15/950-0540-media-i2c-ov9281-Sensor-should-report-RAW-color-spac.patch
new file mode 100644
index 0000000000..b3602204f9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0540-media-i2c-ov9281-Sensor-should-report-RAW-color-spac.patch
@@ -0,0 +1,42 @@
+From e700cec742fc0a3b06b67fde1df2b5819c370e30 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 21 Oct 2021 14:47:20 +0100
+Subject: [PATCH] media: i2c: ov9281: Sensor should report RAW color
+ space
+
+Tested on Raspberry Pi running libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -507,7 +507,7 @@ static int ov9281_set_fmt(struct v4l2_su
+ 	fmt->format.width = mode->width;
+ 	fmt->format.height = mode->height;
+ 	fmt->format.field = V4L2_FIELD_NONE;
+-	fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
++	fmt->format.colorspace = V4L2_COLORSPACE_RAW;
+ 	fmt->format.ycbcr_enc =
+ 			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
+ 	fmt->format.quantization =
+@@ -558,7 +558,7 @@ static int ov9281_get_fmt(struct v4l2_su
+ 		fmt->format.height = mode->height;
+ 		fmt->format.code = ov9281->code;
+ 		fmt->format.field = V4L2_FIELD_NONE;
+-		fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
++		fmt->format.colorspace = V4L2_COLORSPACE_RAW;
+ 		fmt->format.ycbcr_enc =
+ 			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
+ 		fmt->format.quantization =
+@@ -911,7 +911,7 @@ static int ov9281_open(struct v4l2_subde
+ 	try_fmt->height = def_mode->height;
+ 	try_fmt->code = MEDIA_BUS_FMT_Y10_1X10;
+ 	try_fmt->field = V4L2_FIELD_NONE;
+-	try_fmt->colorspace = V4L2_COLORSPACE_SRGB;
++	try_fmt->colorspace = V4L2_COLORSPACE_RAW;
+ 	try_fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(try_fmt->colorspace);
+ 	try_fmt->quantization =
+ 		V4L2_MAP_QUANTIZATION_DEFAULT(true, try_fmt->colorspace,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0541-vc04_services-isp-Report-input-node-as-wanting-full-.patch b/target/linux/bcm27xx/patches-5.15/950-0541-vc04_services-isp-Report-input-node-as-wanting-full-.patch
new file mode 100644
index 0000000000..b09cf0cdd7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0541-vc04_services-isp-Report-input-node-as-wanting-full-.patch
@@ -0,0 +1,29 @@
+From a51b310cccaeac9b0971323dc6fe641fa632c63c Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Thu, 21 Oct 2021 14:49:15 +0100
+Subject: [PATCH] vc04_services: isp: Report input node as wanting full
+ range RAW color space
+
+RAW color spaces are more usually reported as having full range
+quantization.
+
+Tested using libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -1032,7 +1032,9 @@ static int bcm2835_isp_node_try_fmt(stru
+ 		/* In all cases, we only support the defaults for these: */
+ 		f->fmt.pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(f->fmt.pix.colorspace);
+ 		f->fmt.pix.xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(f->fmt.pix.colorspace);
+-		is_rgb = f->fmt.pix.colorspace == V4L2_COLORSPACE_SRGB;
++		/* RAW counts as sRGB here so that we get full range. */
++		is_rgb = f->fmt.pix.colorspace == V4L2_COLORSPACE_SRGB ||
++			f->fmt.pix.colorspace == V4L2_COLORSPACE_RAW;
+ 		f->fmt.pix.quantization = V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb, f->fmt.pix.colorspace,
+ 									f->fmt.pix.ycbcr_enc);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0542-media-bcm2835-unicam-Parse-pad-numbers-correctly.patch b/target/linux/bcm27xx/patches-5.15/950-0542-media-bcm2835-unicam-Parse-pad-numbers-correctly.patch
new file mode 100644
index 0000000000..ba0d4fe4f4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0542-media-bcm2835-unicam-Parse-pad-numbers-correctly.patch
@@ -0,0 +1,231 @@
+From 38c605af2dce528db71bd349ad9ecd41389a52b1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 23 Sep 2020 15:16:18 +0100
+Subject: [PATCH] media/bcm2835-unicam: Parse pad numbers correctly
+
+The driver was making big assumptions about the source device
+using pad 0 and 1, which doesn't follow for more complex
+devices where Unicam's source device may be a sink device for
+something else.
+
+Read the pad numbers through media controller, and reference
+them appropriately.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 89 ++++++++++++-------
+ 1 file changed, 58 insertions(+), 31 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -383,6 +383,8 @@ struct unicam_node {
+ 	int open;
+ 	bool streaming;
+ 	unsigned int pad_id;
++	/* Source pad id on the sensor for this node */
++	unsigned int src_pad_id;
+ 	/* Pointer pointing to current v4l2_buffer */
+ 	struct unicam_buffer *cur_frm;
+ 	/* Pointer pointing to next v4l2_buffer */
+@@ -591,7 +593,7 @@ static int __subdev_get_format(struct un
+ {
+ 	struct v4l2_subdev_format sd_fmt = {
+ 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.pad = pad_id
++		.pad = dev->node[pad_id].src_pad_id,
+ 	};
+ 	int ret;
+ 
+@@ -613,7 +615,7 @@ static int __subdev_set_format(struct un
+ {
+ 	struct v4l2_subdev_format sd_fmt = {
+ 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.pad = pad_id
++		.pad = dev->node[pad_id].src_pad_id,
+ 	};
+ 	int ret;
+ 
+@@ -1981,7 +1983,7 @@ static int unicam_enum_framesizes(struct
+ 
+ 	fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ 	fse.index = fsize->index;
+-	fse.pad = node->pad_id;
++	fse.pad = node->src_pad_id;
+ 
+ 	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
+ 	if (ret)
+@@ -2006,6 +2008,7 @@ static int unicam_enum_frameintervals(st
+ 	const struct unicam_fmt *fmt;
+ 	struct v4l2_subdev_frame_interval_enum fie = {
+ 		.index = fival->index,
++		.pad = node->src_pad_id,
+ 		.width = fival->width,
+ 		.height = fival->height,
+ 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+@@ -2097,8 +2100,13 @@ static int unicam_enum_dv_timings(struct
+ {
+ 	struct unicam_node *node = video_drvdata(file);
+ 	struct unicam_device *dev = node->dev;
++	int ret;
++
++	timings->pad = node->src_pad_id;
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
++	timings->pad = node->pad_id;
+ 
+-	return v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
++	return ret;
+ }
+ 
+ static int unicam_dv_timings_cap(struct file *file, void *priv,
+@@ -2106,8 +2114,13 @@ static int unicam_dv_timings_cap(struct
+ {
+ 	struct unicam_node *node = video_drvdata(file);
+ 	struct unicam_device *dev = node->dev;
++	int ret;
++
++	cap->pad = node->src_pad_id;
++	ret = v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
++	cap->pad = node->pad_id;
+ 
+-	return v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
++	return ret;
+ }
+ 
+ static int unicam_subscribe_event(struct v4l2_fh *fh,
+@@ -2378,14 +2391,12 @@ static int register_node(struct unicam_d
+ 			 */
+ 			fmt = get_first_supported_format(unicam);
+ 
+-			if (!fmt)
+-				/* No compatible formats */
+-				return -EINVAL;
+-
+-			mbus_fmt.code = fmt->code;
+-			ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
+-			if (ret)
+-				return -EINVAL;
++			if (fmt) {
++				mbus_fmt.code = fmt->code;
++				ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
++				if (ret)
++					return -EINVAL;
++			}
+ 		}
+ 		if (mbus_fmt.field != V4L2_FIELD_NONE) {
+ 			/* Interlaced not supported - disable it now. */
+@@ -2395,7 +2406,8 @@ static int register_node(struct unicam_d
+ 				return -EINVAL;
+ 		}
+ 
+-		node->v_fmt.fmt.pix.pixelformat = fmt->fourcc ? fmt->fourcc
++		if (fmt)
++			node->v_fmt.fmt.pix.pixelformat = fmt->fourcc ? fmt->fourcc
+ 						: fmt->repacked_fourcc;
+ 	} else {
+ 		/* Fix this node format as embedded data. */
+@@ -2408,7 +2420,8 @@ static int register_node(struct unicam_d
+ 	node->fmt = fmt;
+ 
+ 	/* Read current subdev format */
+-	unicam_reset_format(node);
++	if (fmt)
++		unicam_reset_format(node);
+ 
+ 	if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_std_id tvnorms;
+@@ -2497,6 +2510,7 @@ static int register_node(struct unicam_d
+ 		unicam_err(unicam, "Unable to allocate dummy buffer.\n");
+ 		return -ENOMEM;
+ 	}
++
+ 	if (pad_id == METADATA_PAD ||
+ 	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
+@@ -2555,7 +2569,8 @@ static int register_node(struct unicam_d
+ 	node->registered = true;
+ 
+ 	if (pad_id != METADATA_PAD || unicam->sensor_embedded_data) {
+-		ret = media_create_pad_link(&unicam->sensor->entity, pad_id,
++		ret = media_create_pad_link(&unicam->sensor->entity,
++					    node->src_pad_id,
+ 					    &node->video_dev.entity, 0,
+ 					    MEDIA_LNK_FL_ENABLED |
+ 					    MEDIA_LNK_FL_IMMUTABLE);
+@@ -2587,8 +2602,10 @@ static void unregister_nodes(struct unic
+ 	}
+ }
+ 
+-static int unicam_probe_complete(struct unicam_device *unicam)
++static int unicam_async_complete(struct v4l2_async_notifier *notifier)
+ {
++	struct unicam_device *unicam = to_unicam_device(notifier->v4l2_dev);
++	unsigned int i, source_pads = 0;
+ 	int ret;
+ 
+ 	unicam->v4l2_dev.notify = unicam_notify;
+@@ -2597,7 +2614,20 @@ static int unicam_probe_complete(struct
+ 	if (!unicam->sensor_state)
+ 		return -ENOMEM;
+ 
+-	unicam->sensor_embedded_data = (unicam->sensor->entity.num_pads >= 2);
++	for (i = 0; i < unicam->sensor->entity.num_pads; i++) {
++		if (unicam->sensor->entity.pads[i].flags & MEDIA_PAD_FL_SOURCE) {
++			if (source_pads < MAX_NODES) {
++				unicam->node[source_pads].src_pad_id = i;
++				unicam_err(unicam, "source pad %u is index %u\n",
++					   source_pads, i);
++			}
++			source_pads++;
++		}
++	}
++	if (!source_pads) {
++		unicam_err(unicam, "No source pads on sensor.\n");
++		goto unregister;
++	}
+ 
+ 	ret = register_node(unicam, &unicam->node[IMAGE_PAD],
+ 			    V4L2_BUF_TYPE_VIDEO_CAPTURE, IMAGE_PAD);
+@@ -2606,11 +2636,15 @@ static int unicam_probe_complete(struct
+ 		goto unregister;
+ 	}
+ 
+-	ret = register_node(unicam, &unicam->node[METADATA_PAD],
+-			    V4L2_BUF_TYPE_META_CAPTURE, METADATA_PAD);
+-	if (ret) {
+-		unicam_err(unicam, "Unable to register metadata video device.\n");
+-		goto unregister;
++	if (source_pads >= 2) {
++		unicam->sensor_embedded_data = true;
++
++		ret = register_node(unicam, &unicam->node[METADATA_PAD],
++				    V4L2_BUF_TYPE_META_CAPTURE, METADATA_PAD);
++		if (ret) {
++			unicam_err(unicam, "Unable to register metadata video device.\n");
++			goto unregister;
++		}
+ 	}
+ 
+ 	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
+@@ -2633,13 +2667,6 @@ unregister:
+ 	return ret;
+ }
+ 
+-static int unicam_async_complete(struct v4l2_async_notifier *notifier)
+-{
+-	struct unicam_device *unicam = to_unicam_device(notifier->v4l2_dev);
+-
+-	return unicam_probe_complete(unicam);
+-}
+-
+ static const struct v4l2_async_notifier_operations unicam_async_ops = {
+ 	.bound = unicam_async_bound,
+ 	.complete = unicam_async_complete,
+@@ -2748,7 +2775,7 @@ static int of_unicam_connect_subdevs(str
+ 	dev->notifier.ops = &unicam_async_ops;
+ 
+ 	dev->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
+-	dev->asd.match.fwnode = of_fwnode_handle(sensor_node);
++	dev->asd.match.fwnode = fwnode_graph_get_remote_endpoint(of_fwnode_handle(ep_node));
+ 	ret = v4l2_async_notifier_add_subdev(&dev->notifier, &dev->asd);
+ 	if (ret) {
+ 		unicam_err(dev, "Error adding subdevice: %d\n", ret);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0543-media-bcm2835-unicam-Add-support-for-configuration-v.patch b/target/linux/bcm27xx/patches-5.15/950-0543-media-bcm2835-unicam-Add-support-for-configuration-v.patch
new file mode 100644
index 0000000000..619edbd9fb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0543-media-bcm2835-unicam-Add-support-for-configuration-v.patch
@@ -0,0 +1,1920 @@
+From 68ed2d82179cf40557f448fd47979a54a12d6345 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 15 Oct 2021 17:57:27 +0100
+Subject: [PATCH] media/bcm2835-unicam: Add support for configuration
+ via MC API
+
+Adds Media Controller API support for more complex pipelines.
+libcamera is about to switch to using this mechanism for configuring
+sensors.
+
+This can be enabled by either a module parameter, or device tree.
+
+Various functions have been moved to group video-centric and
+mc-centric functions together.
+
+Based on a similar conversion done to ti-vpe.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 2125 ++++++++++-------
+ 1 file changed, 1314 insertions(+), 811 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -84,6 +84,10 @@ static int debug;
+ module_param(debug, int, 0644);
+ MODULE_PARM_DESC(debug, "Debug level 0-3");
+ 
++static int media_controller;
++module_param(media_controller, int, 0644);
++MODULE_PARM_DESC(media_controller, "Use media controller API");
++
+ #define unicam_dbg(level, dev, fmt, arg...)	\
+ 		v4l2_dbg(level, debug, &(dev)->v4l2_dev, fmt, ##arg)
+ #define unicam_info(dev, fmt, arg...)	\
+@@ -120,7 +124,7 @@ MODULE_PARM_DESC(debug, "Debug level 0-3
+ #define MIN_WIDTH		16
+ #define MIN_HEIGHT		16
+ /* Default size of the embedded buffer */
+-#define UNICAM_EMBEDDED_SIZE	8192
++#define UNICAM_EMBEDDED_SIZE	16384
+ 
+ /*
+  * Size of the dummy buffer. Can be any size really, but the DMA
+@@ -134,6 +138,22 @@ enum pad_types {
+ 	MAX_NODES
+ };
+ 
++#define MASK_CS_DEFAULT		BIT(V4L2_COLORSPACE_DEFAULT)
++#define MASK_CS_SMPTE170M	BIT(V4L2_COLORSPACE_SMPTE170M)
++#define MASK_CS_SMPTE240M	BIT(V4L2_COLORSPACE_SMPTE240M)
++#define MASK_CS_REC709		BIT(V4L2_COLORSPACE_REC709)
++#define MASK_CS_BT878		BIT(V4L2_COLORSPACE_BT878)
++#define MASK_CS_470_M		BIT(V4L2_COLORSPACE_470_SYSTEM_M)
++#define MASK_CS_470_BG		BIT(V4L2_COLORSPACE_470_SYSTEM_BG)
++#define MASK_CS_JPEG		BIT(V4L2_COLORSPACE_JPEG)
++#define MASK_CS_SRGB		BIT(V4L2_COLORSPACE_SRGB)
++#define MASK_CS_OPRGB		BIT(V4L2_COLORSPACE_OPRGB)
++#define MASK_CS_BT2020		BIT(V4L2_COLORSPACE_BT2020)
++#define MASK_CS_RAW		BIT(V4L2_COLORSPACE_RAW)
++#define MASK_CS_DCI_P3		BIT(V4L2_COLORSPACE_DCI_P3)
++
++#define MAX_COLORSPACE		32
++
+ /*
+  * struct unicam_fmt - Unicam media bus format information
+  * @pixelformat: V4L2 pixel format FCC identifier. 0 if n/a.
+@@ -142,8 +162,14 @@ enum pad_types {
+  * @code: V4L2 media bus format code.
+  * @depth: Bits per pixel as delivered from the source.
+  * @csi_dt: CSI data type.
++ * @valid_colorspaces: Bitmask of valid colorspaces so that the Media Controller
++ *		centric try_fmt can validate the colorspace and pass
++ *		v4l2-compliance.
+  * @check_variants: Flag to denote that there are multiple mediabus formats
+  *		still in the list that could match this V4L2 format.
++ * @mc_skip: Media Controller shouldn't list this format via ENUM_FMT as it is
++ *		a duplicate of an earlier format.
++ * @metadata_fmt: This format only applies to the metadata pad.
+  */
+ struct unicam_fmt {
+ 	u32	fourcc;
+@@ -151,7 +177,10 @@ struct unicam_fmt {
+ 	u32	code;
+ 	u8	depth;
+ 	u8	csi_dt;
+-	u8	check_variants;
++	u32	valid_colorspaces;
++	u8	check_variants:1;
++	u8	mc_skip:1;
++	u8	metadata_fmt:1;
+ };
+ 
+ static const struct unicam_fmt formats[] = {
+@@ -162,173 +191,216 @@ static const struct unicam_fmt formats[]
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
+ 		.check_variants = 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_UYVY,
+ 		.code		= MEDIA_BUS_FMT_UYVY8_2X8,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
+ 		.check_variants = 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_YVYU,
+ 		.code		= MEDIA_BUS_FMT_YVYU8_2X8,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
+ 		.check_variants = 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_VYUY,
+ 		.code		= MEDIA_BUS_FMT_VYUY8_2X8,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
+ 		.check_variants = 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_YUYV,
+ 		.code		= MEDIA_BUS_FMT_YUYV8_1X16,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
++		.mc_skip	= 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_UYVY,
+ 		.code		= MEDIA_BUS_FMT_UYVY8_1X16,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
++		.mc_skip	= 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_YVYU,
+ 		.code		= MEDIA_BUS_FMT_YVYU8_1X16,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
++		.mc_skip	= 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_VYUY,
+ 		.code		= MEDIA_BUS_FMT_VYUY8_1X16,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x1e,
++		.mc_skip	= 1,
++		.valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
++				     MASK_CS_JPEG,
+ 	}, {
+ 	/* RGB Formats */
+ 		.fourcc		= V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
+ 		.code		= MEDIA_BUS_FMT_RGB565_2X8_LE,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x22,
++		.valid_colorspaces = MASK_CS_SRGB,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
+ 		.code		= MEDIA_BUS_FMT_RGB565_2X8_BE,
+ 		.depth		= 16,
+-		.csi_dt		= 0x22
++		.csi_dt		= 0x22,
++		.valid_colorspaces = MASK_CS_SRGB,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
+ 		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x21,
++		.valid_colorspaces = MASK_CS_SRGB,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
+ 		.code		= MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
+ 		.depth		= 16,
+ 		.csi_dt		= 0x21,
++		.valid_colorspaces = MASK_CS_SRGB,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_RGB24, /* rgb */
+ 		.code		= MEDIA_BUS_FMT_RGB888_1X24,
+ 		.depth		= 24,
+ 		.csi_dt		= 0x24,
++		.valid_colorspaces = MASK_CS_SRGB,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_BGR24, /* bgr */
+ 		.code		= MEDIA_BUS_FMT_BGR888_1X24,
+ 		.depth		= 24,
+ 		.csi_dt		= 0x24,
++		.valid_colorspaces = MASK_CS_SRGB,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_RGB32, /* argb */
+ 		.code		= MEDIA_BUS_FMT_ARGB8888_1X32,
+ 		.depth		= 32,
+ 		.csi_dt		= 0x0,
++		.valid_colorspaces = MASK_CS_SRGB,
+ 	}, {
+ 	/* Bayer Formats */
+ 		.fourcc		= V4L2_PIX_FMT_SBGGR8,
+ 		.code		= MEDIA_BUS_FMT_SBGGR8_1X8,
+ 		.depth		= 8,
+ 		.csi_dt		= 0x2a,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGBRG8,
+ 		.code		= MEDIA_BUS_FMT_SGBRG8_1X8,
+ 		.depth		= 8,
+ 		.csi_dt		= 0x2a,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGRBG8,
+ 		.code		= MEDIA_BUS_FMT_SGRBG8_1X8,
+ 		.depth		= 8,
+ 		.csi_dt		= 0x2a,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SRGGB8,
+ 		.code		= MEDIA_BUS_FMT_SRGGB8_1X8,
+ 		.depth		= 8,
+ 		.csi_dt		= 0x2a,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SBGGR10P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SBGGR10,
+ 		.code		= MEDIA_BUS_FMT_SBGGR10_1X10,
+ 		.depth		= 10,
+ 		.csi_dt		= 0x2b,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGBRG10P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SGBRG10,
+ 		.code		= MEDIA_BUS_FMT_SGBRG10_1X10,
+ 		.depth		= 10,
+ 		.csi_dt		= 0x2b,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGRBG10P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SGRBG10,
+ 		.code		= MEDIA_BUS_FMT_SGRBG10_1X10,
+ 		.depth		= 10,
+ 		.csi_dt		= 0x2b,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SRGGB10P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SRGGB10,
+ 		.code		= MEDIA_BUS_FMT_SRGGB10_1X10,
+ 		.depth		= 10,
+ 		.csi_dt		= 0x2b,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SBGGR12P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SBGGR12,
+ 		.code		= MEDIA_BUS_FMT_SBGGR12_1X12,
+ 		.depth		= 12,
+ 		.csi_dt		= 0x2c,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGBRG12P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SGBRG12,
+ 		.code		= MEDIA_BUS_FMT_SGBRG12_1X12,
+ 		.depth		= 12,
+ 		.csi_dt		= 0x2c,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGRBG12P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SGRBG12,
+ 		.code		= MEDIA_BUS_FMT_SGRBG12_1X12,
+ 		.depth		= 12,
+ 		.csi_dt		= 0x2c,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SRGGB12P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SRGGB12,
+ 		.code		= MEDIA_BUS_FMT_SRGGB12_1X12,
+ 		.depth		= 12,
+ 		.csi_dt		= 0x2c,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SBGGR14P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SBGGR14,
+ 		.code		= MEDIA_BUS_FMT_SBGGR14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGBRG14P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SGBRG14,
+ 		.code		= MEDIA_BUS_FMT_SGBRG14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SGRBG14P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SGRBG14,
+ 		.code		= MEDIA_BUS_FMT_SGRBG14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_SRGGB14P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_SRGGB14,
+ 		.code		= MEDIA_BUS_FMT_SRGGB14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 	/*
+ 	 * 16 bit Bayer formats could be supported, but there is no CSI2
+@@ -341,30 +413,35 @@ static const struct unicam_fmt formats[]
+ 		.code		= MEDIA_BUS_FMT_Y8_1X8,
+ 		.depth		= 8,
+ 		.csi_dt		= 0x2a,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_Y10P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_Y10,
+ 		.code		= MEDIA_BUS_FMT_Y10_1X10,
+ 		.depth		= 10,
+ 		.csi_dt		= 0x2b,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_Y12P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_Y12,
+ 		.code		= MEDIA_BUS_FMT_Y12_1X12,
+ 		.depth		= 12,
+ 		.csi_dt		= 0x2c,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	}, {
+ 		.fourcc		= V4L2_PIX_FMT_Y14P,
+ 		.repacked_fourcc = V4L2_PIX_FMT_Y14,
+ 		.code		= MEDIA_BUS_FMT_Y14_1X14,
+ 		.depth		= 14,
+ 		.csi_dt		= 0x2d,
++		.valid_colorspaces = MASK_CS_RAW,
+ 	},
+ 	/* Embedded data format */
+ 	{
+ 		.fourcc		= V4L2_META_FMT_SENSOR_DATA,
+ 		.code		= MEDIA_BUS_FMT_SENSOR_DATA,
+ 		.depth		= 8,
++		.metadata_fmt	= 1,
+ 	}
+ };
+ 
+@@ -409,6 +486,7 @@ struct unicam_node {
+ 	struct unicam_device *dev;
+ 	struct media_pad pad;
+ 	unsigned int embedded_lines;
++	struct media_pipeline pipe;
+ 	/*
+ 	 * Dummy buffer intended to be used by unicam
+ 	 * if we have no other queued buffers to swap to.
+@@ -460,6 +538,8 @@ struct unicam_device {
+ 
+ 	struct unicam_node node[MAX_NODES];
+ 	struct v4l2_ctrl_handler ctrl_handler;
++
++	bool mc_api;
+ };
+ 
+ static inline struct unicam_device *
+@@ -909,6 +989,7 @@ static irqreturn_t unicam_isr(int irq, v
+ 	return IRQ_HANDLED;
+ }
+ 
++/* V4L2 Common IOCTLs */
+ static int unicam_querycap(struct file *file, void *priv,
+ 			   struct v4l2_capability *cap)
+ {
+@@ -926,6 +1007,38 @@ static int unicam_querycap(struct file *
+ 	return 0;
+ }
+ 
++static int unicam_log_status(struct file *file, void *fh)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	u32 reg;
++
++	/* status for sub devices */
++	v4l2_device_call_all(&dev->v4l2_dev, 0, core, log_status);
++
++	unicam_info(dev, "-----Receiver status-----\n");
++	unicam_info(dev, "V4L2 width/height:   %ux%u\n",
++		    node->v_fmt.fmt.pix.width, node->v_fmt.fmt.pix.height);
++	unicam_info(dev, "Mediabus format:     %08x\n", node->fmt->code);
++	unicam_info(dev, "V4L2 format:         %08x\n",
++		    node->v_fmt.fmt.pix.pixelformat);
++	reg = reg_read(dev, UNICAM_IPIPE);
++	unicam_info(dev, "Unpacking/packing:   %u / %u\n",
++		    get_field(reg, UNICAM_PUM_MASK),
++		    get_field(reg, UNICAM_PPM_MASK));
++	unicam_info(dev, "----Live data----\n");
++	unicam_info(dev, "Programmed stride:   %4u\n",
++		    reg_read(dev, UNICAM_IBLS));
++	unicam_info(dev, "Detected resolution: %ux%u\n",
++		    reg_read(dev, UNICAM_IHSTA),
++		    reg_read(dev, UNICAM_IVSTA));
++	unicam_info(dev, "Write pointer:       %08x\n",
++		    reg_read(dev, UNICAM_IBWP));
++
++	return 0;
++}
++
++/* V4L2 Video Centric IOCTLs */
+ static int unicam_enum_fmt_vid_cap(struct file *file, void  *priv,
+ 				   struct v4l2_fmtdesc *f)
+ {
+@@ -1270,6 +1383,727 @@ static int unicam_g_fmt_meta_cap(struct
+ 	return 0;
+ }
+ 
++static int unicam_enum_input(struct file *file, void *priv,
++			     struct v4l2_input *inp)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	int ret;
++
++	if (inp->index != 0)
++		return -EINVAL;
++
++	inp->type = V4L2_INPUT_TYPE_CAMERA;
++	if (v4l2_subdev_has_op(dev->sensor, video, s_dv_timings)) {
++		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
++		inp->std = 0;
++	} else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
++		inp->capabilities = V4L2_IN_CAP_STD;
++		if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std) < 0)
++			inp->std = V4L2_STD_ALL;
++	} else {
++		inp->capabilities = 0;
++		inp->std = 0;
++	}
++
++	if (v4l2_subdev_has_op(dev->sensor, video, g_input_status)) {
++		ret = v4l2_subdev_call(dev->sensor, video, g_input_status,
++				       &inp->status);
++		if (ret < 0)
++			return ret;
++	}
++
++	snprintf(inp->name, sizeof(inp->name), "Camera 0");
++	return 0;
++}
++
++static int unicam_g_input(struct file *file, void *priv, unsigned int *i)
++{
++	*i = 0;
++
++	return 0;
++}
++
++static int unicam_s_input(struct file *file, void *priv, unsigned int i)
++{
++	/*
++	 * FIXME: Ideally we would like to be able to query the source
++	 * subdevice for information over the input connectors it supports,
++	 * and map that through in to a call to video_ops->s_routing.
++	 * There is no infrastructure support for defining that within
++	 * devicetree at present. Until that is implemented we can't
++	 * map a user physical connector number to s_routing input number.
++	 */
++	if (i > 0)
++		return -EINVAL;
++
++	return 0;
++}
++
++static int unicam_querystd(struct file *file, void *priv,
++			   v4l2_std_id *std)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, querystd, std);
++}
++
++static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, g_std, std);
++}
++
++static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	int ret;
++	v4l2_std_id current_std;
++
++	ret = v4l2_subdev_call(dev->sensor, video, g_std, &current_std);
++	if (ret)
++		return ret;
++
++	if (std == current_std)
++		return 0;
++
++	if (vb2_is_busy(&node->buffer_queue))
++		return -EBUSY;
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
++
++	/* Force recomputation of bytesperline */
++	node->v_fmt.fmt.pix.bytesperline = 0;
++
++	unicam_reset_format(node);
++
++	return ret;
++}
++
++static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
++}
++
++static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
++}
++
++static int unicam_s_selection(struct file *file, void *priv,
++			      struct v4l2_selection *sel)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_selection sdsel = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.target = sel->target,
++		.flags = sel->flags,
++		.r = sel->r,
++	};
++
++	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
++		return -EINVAL;
++
++	return v4l2_subdev_call(dev->sensor, pad, set_selection, NULL, &sdsel);
++}
++
++static int unicam_g_selection(struct file *file, void *priv,
++			      struct v4l2_selection *sel)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_subdev_selection sdsel = {
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++		.target = sel->target,
++	};
++	int ret;
++
++	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
++		return -EINVAL;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, get_selection, NULL, &sdsel);
++	if (!ret)
++		sel->r = sdsel.r;
++
++	return ret;
++}
++
++static int unicam_enum_framesizes(struct file *file, void *priv,
++				  struct v4l2_frmsizeenum *fsize)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt;
++	struct v4l2_subdev_frame_size_enum fse;
++	int ret;
++
++	/* check for valid format */
++	fmt = find_format_by_pix(dev, fsize->pixel_format);
++	if (!fmt) {
++		unicam_dbg(3, dev, "Invalid pixel code: %x\n",
++			   fsize->pixel_format);
++		return -EINVAL;
++	}
++	fse.code = fmt->code;
++
++	fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
++	fse.index = fsize->index;
++	fse.pad = node->src_pad_id;
++
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
++	if (ret)
++		return ret;
++
++	unicam_dbg(1, dev, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
++		   __func__, fse.index, fse.code, fse.min_width, fse.max_width,
++		   fse.min_height, fse.max_height);
++
++	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
++	fsize->discrete.width = fse.max_width;
++	fsize->discrete.height = fse.max_height;
++
++	return 0;
++}
++
++static int unicam_enum_frameintervals(struct file *file, void *priv,
++				      struct v4l2_frmivalenum *fival)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt;
++	struct v4l2_subdev_frame_interval_enum fie = {
++		.index = fival->index,
++		.pad = node->src_pad_id,
++		.width = fival->width,
++		.height = fival->height,
++		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
++	};
++	int ret;
++
++	fmt = find_format_by_pix(dev, fival->pixel_format);
++	if (!fmt)
++		return -EINVAL;
++
++	fie.code = fmt->code;
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_interval,
++			       NULL, &fie);
++	if (ret)
++		return ret;
++
++	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
++	fival->discrete = fie.interval;
++
++	return 0;
++}
++
++static int unicam_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_g_parm_cap(video_devdata(file), dev->sensor, a);
++}
++
++static int unicam_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_s_parm_cap(video_devdata(file), dev->sensor, a);
++}
++
++static int unicam_g_dv_timings(struct file *file, void *priv,
++			       struct v4l2_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
++}
++
++static int unicam_s_dv_timings(struct file *file, void *priv,
++			       struct v4l2_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	struct v4l2_dv_timings current_timings;
++	int ret;
++
++	ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
++			       &current_timings);
++
++	if (ret < 0)
++		return ret;
++
++	if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
++		return 0;
++
++	if (vb2_is_busy(&node->buffer_queue))
++		return -EBUSY;
++
++	ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
++
++	/* Force recomputation of bytesperline */
++	node->v_fmt.fmt.pix.bytesperline = 0;
++
++	unicam_reset_format(node);
++
++	return ret;
++}
++
++static int unicam_query_dv_timings(struct file *file, void *priv,
++				   struct v4l2_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
++}
++
++static int unicam_enum_dv_timings(struct file *file, void *priv,
++				  struct v4l2_enum_dv_timings *timings)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	int ret;
++
++	timings->pad = node->src_pad_id;
++	ret = v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
++	timings->pad = node->pad_id;
++
++	return ret;
++}
++
++static int unicam_dv_timings_cap(struct file *file, void *priv,
++				 struct v4l2_dv_timings_cap *cap)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	int ret;
++
++	cap->pad = node->src_pad_id;
++	ret = v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
++	cap->pad = node->pad_id;
++
++	return ret;
++}
++
++static int unicam_subscribe_event(struct v4l2_fh *fh,
++				  const struct v4l2_event_subscription *sub)
++{
++	switch (sub->type) {
++	case V4L2_EVENT_FRAME_SYNC:
++		return v4l2_event_subscribe(fh, sub, 2, NULL);
++	case V4L2_EVENT_SOURCE_CHANGE:
++		return v4l2_event_subscribe(fh, sub, 4, NULL);
++	}
++
++	return v4l2_ctrl_subscribe_event(fh, sub);
++}
++
++static void unicam_notify(struct v4l2_subdev *sd,
++			  unsigned int notification, void *arg)
++{
++	struct unicam_device *dev = to_unicam_device(sd->v4l2_dev);
++
++	switch (notification) {
++	case V4L2_DEVICE_NOTIFY_EVENT:
++		v4l2_event_queue(&dev->node[IMAGE_PAD].video_dev, arg);
++		break;
++	default:
++		break;
++	}
++}
++
++/* unicam capture ioctl operations */
++static const struct v4l2_ioctl_ops unicam_ioctl_ops = {
++	.vidioc_querycap		= unicam_querycap,
++	.vidioc_enum_fmt_vid_cap	= unicam_enum_fmt_vid_cap,
++	.vidioc_g_fmt_vid_cap		= unicam_g_fmt_vid_cap,
++	.vidioc_s_fmt_vid_cap		= unicam_s_fmt_vid_cap,
++	.vidioc_try_fmt_vid_cap		= unicam_try_fmt_vid_cap,
++
++	.vidioc_enum_fmt_meta_cap	= unicam_enum_fmt_meta_cap,
++	.vidioc_g_fmt_meta_cap		= unicam_g_fmt_meta_cap,
++	.vidioc_s_fmt_meta_cap		= unicam_g_fmt_meta_cap,
++	.vidioc_try_fmt_meta_cap	= unicam_g_fmt_meta_cap,
++
++	.vidioc_enum_input		= unicam_enum_input,
++	.vidioc_g_input			= unicam_g_input,
++	.vidioc_s_input			= unicam_s_input,
++
++	.vidioc_querystd		= unicam_querystd,
++	.vidioc_s_std			= unicam_s_std,
++	.vidioc_g_std			= unicam_g_std,
++
++	.vidioc_g_edid			= unicam_g_edid,
++	.vidioc_s_edid			= unicam_s_edid,
++
++	.vidioc_enum_framesizes		= unicam_enum_framesizes,
++	.vidioc_enum_frameintervals	= unicam_enum_frameintervals,
++
++	.vidioc_g_selection		= unicam_g_selection,
++	.vidioc_s_selection		= unicam_s_selection,
++
++	.vidioc_g_parm			= unicam_g_parm,
++	.vidioc_s_parm			= unicam_s_parm,
++
++	.vidioc_s_dv_timings		= unicam_s_dv_timings,
++	.vidioc_g_dv_timings		= unicam_g_dv_timings,
++	.vidioc_query_dv_timings	= unicam_query_dv_timings,
++	.vidioc_enum_dv_timings		= unicam_enum_dv_timings,
++	.vidioc_dv_timings_cap		= unicam_dv_timings_cap,
++
++	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
++	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
++	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
++	.vidioc_querybuf		= vb2_ioctl_querybuf,
++	.vidioc_qbuf			= vb2_ioctl_qbuf,
++	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
++	.vidioc_expbuf			= vb2_ioctl_expbuf,
++	.vidioc_streamon		= vb2_ioctl_streamon,
++	.vidioc_streamoff		= vb2_ioctl_streamoff,
++
++	.vidioc_log_status		= unicam_log_status,
++	.vidioc_subscribe_event		= unicam_subscribe_event,
++	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
++};
++
++/* V4L2 Media Controller Centric IOCTLs */
++
++static int unicam_mc_enum_fmt_vid_cap(struct file *file, void  *priv,
++				      struct v4l2_fmtdesc *f)
++{
++	int i, j;
++
++	for (i = 0, j = 0; i < ARRAY_SIZE(formats); i++) {
++		if (f->mbus_code && formats[i].code != f->mbus_code)
++			continue;
++		if (formats[i].mc_skip || formats[i].metadata_fmt)
++			continue;
++
++		if (formats[i].fourcc) {
++			if (j == f->index) {
++				f->pixelformat = formats[i].fourcc;
++				f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++				return 0;
++			}
++			j++;
++		}
++		if (formats[i].repacked_fourcc) {
++			if (j == f->index) {
++				f->pixelformat = formats[i].repacked_fourcc;
++				f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++				return 0;
++			}
++			j++;
++		}
++	}
++
++	return -EINVAL;
++}
++
++static int unicam_mc_g_fmt_vid_cap(struct file *file, void *priv,
++				   struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	if (node->pad_id != IMAGE_PAD)
++		return -EINVAL;
++
++	*f = node->v_fmt;
++
++	return 0;
++}
++
++static void unicam_mc_try_fmt(struct unicam_node *node, struct v4l2_format *f,
++			      const struct unicam_fmt **ret_fmt)
++{
++	struct v4l2_pix_format *v4l2_format = &f->fmt.pix;
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt;
++	int is_rgb;
++
++	/*
++	 * Default to the first format if the requested pixel format code isn't
++	 * supported.
++	 */
++	fmt = find_format_by_pix(dev, v4l2_format->pixelformat);
++	if (!fmt) {
++		fmt = &formats[0];
++		v4l2_format->pixelformat = fmt->fourcc;
++	}
++
++	unicam_calc_format_size_bpl(dev, fmt, f);
++
++	if (v4l2_format->field == V4L2_FIELD_ANY)
++		v4l2_format->field = V4L2_FIELD_NONE;
++
++	if (ret_fmt)
++		*ret_fmt = fmt;
++
++	if (v4l2_format->colorspace >= MAX_COLORSPACE ||
++	    !(fmt->valid_colorspaces & (1 << v4l2_format->colorspace))) {
++		v4l2_format->colorspace = __ffs(fmt->valid_colorspaces);
++
++		v4l2_format->xfer_func =
++			V4L2_MAP_XFER_FUNC_DEFAULT(v4l2_format->colorspace);
++		v4l2_format->ycbcr_enc =
++			V4L2_MAP_YCBCR_ENC_DEFAULT(v4l2_format->colorspace);
++		is_rgb = v4l2_format->colorspace == V4L2_COLORSPACE_SRGB;
++		v4l2_format->quantization =
++			V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb,
++						      v4l2_format->colorspace,
++						      v4l2_format->ycbcr_enc);
++	}
++
++	unicam_dbg(3, dev, "%s: %08x %ux%u (bytesperline %u sizeimage %u)\n",
++		   __func__, v4l2_format->pixelformat,
++		   v4l2_format->width, v4l2_format->height,
++		   v4l2_format->bytesperline, v4l2_format->sizeimage);
++}
++
++static int unicam_mc_try_fmt_vid_cap(struct file *file, void *priv,
++				     struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	unicam_mc_try_fmt(node, f, NULL);
++	return 0;
++}
++
++static int unicam_mc_s_fmt_vid_cap(struct file *file, void *priv,
++				   struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++	const struct unicam_fmt *fmt;
++
++	if (vb2_is_busy(&node->buffer_queue)) {
++		unicam_dbg(3, dev, "%s device busy\n", __func__);
++		return -EBUSY;
++	}
++
++	unicam_mc_try_fmt(node, f, &fmt);
++
++	node->v_fmt = *f;
++	node->fmt = fmt;
++
++	return 0;
++}
++
++static int unicam_mc_enum_framesizes(struct file *file, void *fh,
++				     struct v4l2_frmsizeenum *fsize)
++{
++	struct unicam_node *node = video_drvdata(file);
++	struct unicam_device *dev = node->dev;
++
++	if (fsize->index > 0)
++		return -EINVAL;
++
++	if (!find_format_by_pix(dev, fsize->pixel_format)) {
++		unicam_dbg(3, dev, "Invalid pixel format 0x%08x\n",
++			   fsize->pixel_format);
++		return -EINVAL;
++	}
++
++	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
++	fsize->stepwise.min_width = MIN_WIDTH;
++	fsize->stepwise.max_width = MAX_WIDTH;
++	fsize->stepwise.step_width = 1;
++	fsize->stepwise.min_height = MIN_HEIGHT;
++	fsize->stepwise.max_height = MAX_HEIGHT;
++	fsize->stepwise.step_height = 1;
++
++	return 0;
++}
++
++static int unicam_mc_enum_fmt_meta_cap(struct file *file, void  *priv,
++				       struct v4l2_fmtdesc *f)
++{
++	int i, j;
++
++	for (i = 0, j = 0; i < ARRAY_SIZE(formats); i++) {
++		if (f->mbus_code && formats[i].code != f->mbus_code)
++			continue;
++		if (!formats[i].metadata_fmt)
++			continue;
++
++		if (formats[i].fourcc) {
++			if (j == f->index) {
++				f->pixelformat = formats[i].fourcc;
++				f->type = V4L2_BUF_TYPE_META_CAPTURE;
++				return 0;
++			}
++			j++;
++		}
++	}
++
++	return -EINVAL;
++}
++
++static int unicam_mc_g_fmt_meta_cap(struct file *file, void *priv,
++				    struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	if (node->pad_id != METADATA_PAD)
++		return -EINVAL;
++
++	*f = node->v_fmt;
++
++	return 0;
++}
++
++static int unicam_mc_try_fmt_meta_cap(struct file *file, void *priv,
++				      struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	if (node->pad_id != METADATA_PAD)
++		return -EINVAL;
++
++	f->fmt.meta.dataformat = V4L2_META_FMT_SENSOR_DATA;
++
++	return 0;
++}
++
++static int unicam_mc_s_fmt_meta_cap(struct file *file, void *priv,
++				    struct v4l2_format *f)
++{
++	struct unicam_node *node = video_drvdata(file);
++
++	if (node->pad_id != METADATA_PAD)
++		return -EINVAL;
++
++	unicam_mc_try_fmt_meta_cap(file, priv, f);
++
++	node->v_fmt = *f;
++
++	return 0;
++}
++
++static const struct v4l2_ioctl_ops unicam_mc_ioctl_ops = {
++	.vidioc_querycap      = unicam_querycap,
++	.vidioc_enum_fmt_vid_cap  = unicam_mc_enum_fmt_vid_cap,
++	.vidioc_g_fmt_vid_cap     = unicam_mc_g_fmt_vid_cap,
++	.vidioc_try_fmt_vid_cap   = unicam_mc_try_fmt_vid_cap,
++	.vidioc_s_fmt_vid_cap     = unicam_mc_s_fmt_vid_cap,
++
++	.vidioc_enum_fmt_meta_cap	= unicam_mc_enum_fmt_meta_cap,
++	.vidioc_g_fmt_meta_cap		= unicam_mc_g_fmt_meta_cap,
++	.vidioc_try_fmt_meta_cap	= unicam_mc_try_fmt_meta_cap,
++	.vidioc_s_fmt_meta_cap		= unicam_mc_s_fmt_meta_cap,
++
++	.vidioc_enum_framesizes   = unicam_mc_enum_framesizes,
++	.vidioc_reqbufs       = vb2_ioctl_reqbufs,
++	.vidioc_create_bufs   = vb2_ioctl_create_bufs,
++	.vidioc_prepare_buf   = vb2_ioctl_prepare_buf,
++	.vidioc_querybuf      = vb2_ioctl_querybuf,
++	.vidioc_qbuf          = vb2_ioctl_qbuf,
++	.vidioc_dqbuf         = vb2_ioctl_dqbuf,
++	.vidioc_expbuf        = vb2_ioctl_expbuf,
++	.vidioc_streamon      = vb2_ioctl_streamon,
++	.vidioc_streamoff     = vb2_ioctl_streamoff,
++
++	.vidioc_log_status		= unicam_log_status,
++	.vidioc_subscribe_event		= unicam_subscribe_event,
++	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
++};
++
++static int
++unicam_mc_subdev_link_validate_get_format(struct media_pad *pad,
++					  struct v4l2_subdev_format *fmt)
++{
++	if (is_media_entity_v4l2_subdev(pad->entity)) {
++		struct v4l2_subdev *sd =
++			media_entity_to_v4l2_subdev(pad->entity);
++
++		fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
++		fmt->pad = pad->index;
++		return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
++	}
++
++	return -EINVAL;
++}
++
++static int unicam_mc_video_link_validate(struct media_link *link)
++{
++	struct video_device *vd = container_of(link->sink->entity,
++						struct video_device, entity);
++	struct unicam_node *node = container_of(vd, struct unicam_node,
++						video_dev);
++	struct unicam_device *unicam = node->dev;
++	struct v4l2_subdev_format source_fmt;
++	int ret;
++
++	if (!media_entity_remote_pad(link->sink->entity->pads)) {
++		unicam_dbg(1, unicam,
++			   "video node %s pad not connected\n", vd->name);
++		return -ENOTCONN;
++	}
++
++	ret = unicam_mc_subdev_link_validate_get_format(link->source,
++							&source_fmt);
++	if (ret < 0)
++		return 0;
++
++	if (node->pad_id == IMAGE_PAD) {
++		struct v4l2_pix_format *pix_fmt = &node->v_fmt.fmt.pix;
++		const struct unicam_fmt *fmt;
++
++		if (source_fmt.format.width != pix_fmt->width ||
++		    source_fmt.format.height != pix_fmt->height) {
++			unicam_err(unicam,
++				   "Wrong width or height %ux%u (remote pad set to %ux%u)\n",
++				   pix_fmt->width, pix_fmt->height,
++				   source_fmt.format.width,
++				   source_fmt.format.height);
++			return -EINVAL;
++		}
++
++		fmt = find_format_by_code(source_fmt.format.code);
++
++		if (!fmt || (fmt->fourcc != pix_fmt->pixelformat &&
++			     fmt->repacked_fourcc != pix_fmt->pixelformat))
++			return -EINVAL;
++	} else {
++		struct v4l2_meta_format *meta_fmt = &node->v_fmt.fmt.meta;
++
++		if (source_fmt.format.width != meta_fmt->buffersize ||
++		    source_fmt.format.height != 1 ||
++		    source_fmt.format.code != MEDIA_BUS_FMT_SENSOR_DATA) {
++			unicam_err(unicam,
++				   "Wrong metadata width/height/code %ux%u %08x (remote pad set to %ux%u %08x)\n",
++				   meta_fmt->buffersize, 1,
++				   MEDIA_BUS_FMT_SENSOR_DATA,
++				   source_fmt.format.width,
++				   source_fmt.format.height,
++				   source_fmt.format.code);
++			return -EINVAL;
++		}
++	}
++
++	return 0;
++}
++
++static const struct media_entity_operations unicam_mc_entity_ops = {
++	.link_validate = unicam_mc_video_link_validate,
++};
++
++/* videobuf2 Operations */
++
+ static int unicam_queue_setup(struct vb2_queue *vq,
+ 			      unsigned int *nbuffers,
+ 			      unsigned int *nplanes,
+@@ -1667,6 +2501,12 @@ static int unicam_start_streaming(struct
+ 		goto err_streaming;
+ 	}
+ 
++	ret = media_pipeline_start(&node->video_dev.entity, &node->pipe);
++	if (ret < 0) {
++		unicam_err(dev, "Failed to start media pipeline: %d\n", ret);
++		goto err_pm_put;
++	}
++
+ 	dev->active_data_lanes = dev->max_data_lanes;
+ 
+ 	if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+@@ -1676,7 +2516,7 @@ static int unicam_start_streaming(struct
+ 				       0, &mbus_config);
+ 		if (ret < 0 && ret != -ENOIOCTLCMD) {
+ 			unicam_dbg(3, dev, "g_mbus_config failed\n");
+-			goto err_pm_put;
++			goto error_pipeline;
+ 		}
+ 
+ 		dev->active_data_lanes =
+@@ -1689,7 +2529,7 @@ static int unicam_start_streaming(struct
+ 				   dev->active_data_lanes,
+ 				   dev->max_data_lanes);
+ 			ret = -EINVAL;
+-			goto err_pm_put;
++			goto error_pipeline;
+ 		}
+ 	}
+ 
+@@ -1699,13 +2539,13 @@ static int unicam_start_streaming(struct
+ 	ret = clk_set_min_rate(dev->vpu_clock, MIN_VPU_CLOCK_RATE);
+ 	if (ret) {
+ 		unicam_err(dev, "failed to set up VPU clock\n");
+-		goto err_pm_put;
++		goto error_pipeline;
+ 	}
+ 
+ 	ret = clk_prepare_enable(dev->vpu_clock);
+ 	if (ret) {
+ 		unicam_err(dev, "Failed to enable VPU clock: %d\n", ret);
+-		goto err_pm_put;
++		goto error_pipeline;
+ 	}
+ 
+ 	ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
+@@ -1756,6 +2596,8 @@ err_vpu_clock:
+ 	if (clk_set_min_rate(dev->vpu_clock, 0))
+ 		unicam_err(dev, "failed to reset the VPU clock\n");
+ 	clk_disable_unprepare(dev->vpu_clock);
++error_pipeline:
++	media_pipeline_stop(&node->video_dev.entity);
+ err_pm_put:
+ 	unicam_runtime_put(dev);
+ err_streaming:
+@@ -1783,6 +2625,8 @@ static void unicam_stop_streaming(struct
+ 
+ 		unicam_disable(dev);
+ 
++		media_pipeline_stop(&node->video_dev.entity);
++
+ 		if (dev->clocks_enabled) {
+ 			if (clk_set_min_rate(dev->vpu_clock, 0))
+ 				unicam_err(dev, "failed to reset the min VPU clock\n");
+@@ -1807,379 +2651,6 @@ static void unicam_stop_streaming(struct
+ 	unicam_return_buffers(node, VB2_BUF_STATE_ERROR);
+ }
+ 
+-static int unicam_enum_input(struct file *file, void *priv,
+-			     struct v4l2_input *inp)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	int ret;
+-
+-	if (inp->index != 0)
+-		return -EINVAL;
+-
+-	inp->type = V4L2_INPUT_TYPE_CAMERA;
+-	if (v4l2_subdev_has_op(dev->sensor, video, s_dv_timings)) {
+-		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
+-		inp->std = 0;
+-	} else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
+-		inp->capabilities = V4L2_IN_CAP_STD;
+-		if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std) < 0)
+-			inp->std = V4L2_STD_ALL;
+-	} else {
+-		inp->capabilities = 0;
+-		inp->std = 0;
+-	}
+-
+-	if (v4l2_subdev_has_op(dev->sensor, video, g_input_status)) {
+-		ret = v4l2_subdev_call(dev->sensor, video, g_input_status,
+-				       &inp->status);
+-		if (ret < 0)
+-			return ret;
+-	}
+-
+-	snprintf(inp->name, sizeof(inp->name), "Camera 0");
+-	return 0;
+-}
+-
+-static int unicam_g_input(struct file *file, void *priv, unsigned int *i)
+-{
+-	*i = 0;
+-
+-	return 0;
+-}
+-
+-static int unicam_s_input(struct file *file, void *priv, unsigned int i)
+-{
+-	/*
+-	 * FIXME: Ideally we would like to be able to query the source
+-	 * subdevice for information over the input connectors it supports,
+-	 * and map that through in to a call to video_ops->s_routing.
+-	 * There is no infrastructure support for defining that within
+-	 * devicetree at present. Until that is implemented we can't
+-	 * map a user physical connector number to s_routing input number.
+-	 */
+-	if (i > 0)
+-		return -EINVAL;
+-
+-	return 0;
+-}
+-
+-static int unicam_querystd(struct file *file, void *priv,
+-			   v4l2_std_id *std)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, querystd, std);
+-}
+-
+-static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, g_std, std);
+-}
+-
+-static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	int ret;
+-	v4l2_std_id current_std;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, g_std, &current_std);
+-	if (ret)
+-		return ret;
+-
+-	if (std == current_std)
+-		return 0;
+-
+-	if (vb2_is_busy(&node->buffer_queue))
+-		return -EBUSY;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
+-
+-	/* Force recomputation of bytesperline */
+-	node->v_fmt.fmt.pix.bytesperline = 0;
+-
+-	unicam_reset_format(node);
+-
+-	return ret;
+-}
+-
+-static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
+-}
+-
+-static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
+-}
+-
+-static int unicam_s_selection(struct file *file, void *priv,
+-			      struct v4l2_selection *sel)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev_selection sdsel = {
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.target = sel->target,
+-		.flags = sel->flags,
+-		.r = sel->r,
+-	};
+-
+-	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+-		return -EINVAL;
+-
+-	return v4l2_subdev_call(dev->sensor, pad, set_selection, NULL, &sdsel);
+-}
+-
+-static int unicam_g_selection(struct file *file, void *priv,
+-			      struct v4l2_selection *sel)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_subdev_selection sdsel = {
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-		.target = sel->target,
+-	};
+-	int ret;
+-
+-	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+-		return -EINVAL;
+-
+-	ret = v4l2_subdev_call(dev->sensor, pad, get_selection, NULL, &sdsel);
+-	if (!ret)
+-		sel->r = sdsel.r;
+-
+-	return ret;
+-}
+-
+-static int unicam_enum_framesizes(struct file *file, void *priv,
+-				  struct v4l2_frmsizeenum *fsize)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	const struct unicam_fmt *fmt;
+-	struct v4l2_subdev_frame_size_enum fse;
+-	int ret;
+-
+-	/* check for valid format */
+-	fmt = find_format_by_pix(dev, fsize->pixel_format);
+-	if (!fmt) {
+-		unicam_dbg(3, dev, "Invalid pixel code: %x\n",
+-			   fsize->pixel_format);
+-		return -EINVAL;
+-	}
+-	fse.code = fmt->code;
+-
+-	fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+-	fse.index = fsize->index;
+-	fse.pad = node->src_pad_id;
+-
+-	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
+-	if (ret)
+-		return ret;
+-
+-	unicam_dbg(1, dev, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
+-		   __func__, fse.index, fse.code, fse.min_width, fse.max_width,
+-		   fse.min_height, fse.max_height);
+-
+-	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+-	fsize->discrete.width = fse.max_width;
+-	fsize->discrete.height = fse.max_height;
+-
+-	return 0;
+-}
+-
+-static int unicam_enum_frameintervals(struct file *file, void *priv,
+-				      struct v4l2_frmivalenum *fival)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	const struct unicam_fmt *fmt;
+-	struct v4l2_subdev_frame_interval_enum fie = {
+-		.index = fival->index,
+-		.pad = node->src_pad_id,
+-		.width = fival->width,
+-		.height = fival->height,
+-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+-	};
+-	int ret;
+-
+-	fmt = find_format_by_pix(dev, fival->pixel_format);
+-	if (!fmt)
+-		return -EINVAL;
+-
+-	fie.code = fmt->code;
+-	ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_interval,
+-			       NULL, &fie);
+-	if (ret)
+-		return ret;
+-
+-	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+-	fival->discrete = fie.interval;
+-
+-	return 0;
+-}
+-
+-static int unicam_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_g_parm_cap(video_devdata(file), dev->sensor, a);
+-}
+-
+-static int unicam_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_s_parm_cap(video_devdata(file), dev->sensor, a);
+-}
+-
+-static int unicam_g_dv_timings(struct file *file, void *priv,
+-			       struct v4l2_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
+-}
+-
+-static int unicam_s_dv_timings(struct file *file, void *priv,
+-			       struct v4l2_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	struct v4l2_dv_timings current_timings;
+-	int ret;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
+-			       &current_timings);
+-
+-	if (ret < 0)
+-		return ret;
+-
+-	if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
+-		return 0;
+-
+-	if (vb2_is_busy(&node->buffer_queue))
+-		return -EBUSY;
+-
+-	ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
+-
+-	/* Force recomputation of bytesperline */
+-	node->v_fmt.fmt.pix.bytesperline = 0;
+-
+-	unicam_reset_format(node);
+-
+-	return ret;
+-}
+-
+-static int unicam_query_dv_timings(struct file *file, void *priv,
+-				   struct v4l2_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-
+-	return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
+-}
+-
+-static int unicam_enum_dv_timings(struct file *file, void *priv,
+-				  struct v4l2_enum_dv_timings *timings)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	int ret;
+-
+-	timings->pad = node->src_pad_id;
+-	ret = v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
+-	timings->pad = node->pad_id;
+-
+-	return ret;
+-}
+-
+-static int unicam_dv_timings_cap(struct file *file, void *priv,
+-				 struct v4l2_dv_timings_cap *cap)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	int ret;
+-
+-	cap->pad = node->src_pad_id;
+-	ret = v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
+-	cap->pad = node->pad_id;
+-
+-	return ret;
+-}
+-
+-static int unicam_subscribe_event(struct v4l2_fh *fh,
+-				  const struct v4l2_event_subscription *sub)
+-{
+-	switch (sub->type) {
+-	case V4L2_EVENT_FRAME_SYNC:
+-		return v4l2_event_subscribe(fh, sub, 2, NULL);
+-	case V4L2_EVENT_SOURCE_CHANGE:
+-		return v4l2_event_subscribe(fh, sub, 4, NULL);
+-	}
+-
+-	return v4l2_ctrl_subscribe_event(fh, sub);
+-}
+-
+-static int unicam_log_status(struct file *file, void *fh)
+-{
+-	struct unicam_node *node = video_drvdata(file);
+-	struct unicam_device *dev = node->dev;
+-	u32 reg;
+-
+-	/* status for sub devices */
+-	v4l2_device_call_all(&dev->v4l2_dev, 0, core, log_status);
+-
+-	unicam_info(dev, "-----Receiver status-----\n");
+-	unicam_info(dev, "V4L2 width/height:   %ux%u\n",
+-		    node->v_fmt.fmt.pix.width, node->v_fmt.fmt.pix.height);
+-	unicam_info(dev, "Mediabus format:     %08x\n", node->fmt->code);
+-	unicam_info(dev, "V4L2 format:         %08x\n",
+-		    node->v_fmt.fmt.pix.pixelformat);
+-	reg = reg_read(dev, UNICAM_IPIPE);
+-	unicam_info(dev, "Unpacking/packing:   %u / %u\n",
+-		    get_field(reg, UNICAM_PUM_MASK),
+-		    get_field(reg, UNICAM_PPM_MASK));
+-	unicam_info(dev, "----Live data----\n");
+-	unicam_info(dev, "Programmed stride:   %4u\n",
+-		    reg_read(dev, UNICAM_IBLS));
+-	unicam_info(dev, "Detected resolution: %ux%u\n",
+-		    reg_read(dev, UNICAM_IHSTA),
+-		    reg_read(dev, UNICAM_IVSTA));
+-	unicam_info(dev, "Write pointer:       %08x\n",
+-		    reg_read(dev, UNICAM_IBWP));
+-
+-	return 0;
+-}
+-
+-static void unicam_notify(struct v4l2_subdev *sd,
+-			  unsigned int notification, void *arg)
+-{
+-	struct unicam_device *dev = to_unicam_device(sd->v4l2_dev);
+-
+-	switch (notification) {
+-	case V4L2_DEVICE_NOTIFY_EVENT:
+-		v4l2_event_queue(&dev->node[IMAGE_PAD].video_dev, arg);
+-		break;
+-	default:
+-		break;
+-	}
+-}
+ 
+ static const struct vb2_ops unicam_video_qops = {
+ 	.wait_prepare		= vb2_ops_wait_prepare,
+@@ -2262,60 +2733,6 @@ static const struct v4l2_file_operations
+ 	.mmap		= vb2_fop_mmap,
+ };
+ 
+-/* unicam capture ioctl operations */
+-static const struct v4l2_ioctl_ops unicam_ioctl_ops = {
+-	.vidioc_querycap		= unicam_querycap,
+-	.vidioc_enum_fmt_vid_cap	= unicam_enum_fmt_vid_cap,
+-	.vidioc_g_fmt_vid_cap		= unicam_g_fmt_vid_cap,
+-	.vidioc_s_fmt_vid_cap		= unicam_s_fmt_vid_cap,
+-	.vidioc_try_fmt_vid_cap		= unicam_try_fmt_vid_cap,
+-
+-	.vidioc_enum_fmt_meta_cap	= unicam_enum_fmt_meta_cap,
+-	.vidioc_g_fmt_meta_cap		= unicam_g_fmt_meta_cap,
+-	.vidioc_s_fmt_meta_cap		= unicam_g_fmt_meta_cap,
+-	.vidioc_try_fmt_meta_cap	= unicam_g_fmt_meta_cap,
+-
+-	.vidioc_enum_input		= unicam_enum_input,
+-	.vidioc_g_input			= unicam_g_input,
+-	.vidioc_s_input			= unicam_s_input,
+-
+-	.vidioc_querystd		= unicam_querystd,
+-	.vidioc_s_std			= unicam_s_std,
+-	.vidioc_g_std			= unicam_g_std,
+-
+-	.vidioc_g_edid			= unicam_g_edid,
+-	.vidioc_s_edid			= unicam_s_edid,
+-
+-	.vidioc_enum_framesizes		= unicam_enum_framesizes,
+-	.vidioc_enum_frameintervals	= unicam_enum_frameintervals,
+-
+-	.vidioc_g_selection		= unicam_g_selection,
+-	.vidioc_s_selection		= unicam_s_selection,
+-
+-	.vidioc_g_parm			= unicam_g_parm,
+-	.vidioc_s_parm			= unicam_s_parm,
+-
+-	.vidioc_s_dv_timings		= unicam_s_dv_timings,
+-	.vidioc_g_dv_timings		= unicam_g_dv_timings,
+-	.vidioc_query_dv_timings	= unicam_query_dv_timings,
+-	.vidioc_enum_dv_timings		= unicam_enum_dv_timings,
+-	.vidioc_dv_timings_cap		= unicam_dv_timings_cap,
+-
+-	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
+-	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
+-	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
+-	.vidioc_querybuf		= vb2_ioctl_querybuf,
+-	.vidioc_qbuf			= vb2_ioctl_qbuf,
+-	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
+-	.vidioc_expbuf			= vb2_ioctl_expbuf,
+-	.vidioc_streamon		= vb2_ioctl_streamon,
+-	.vidioc_streamoff		= vb2_ioctl_streamoff,
+-
+-	.vidioc_log_status		= unicam_log_status,
+-	.vidioc_subscribe_event		= unicam_subscribe_event,
+-	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+-};
+-
+ static int
+ unicam_async_bound(struct v4l2_async_notifier *notifier,
+ 		   struct v4l2_subdev *subdev,
+@@ -2366,11 +2783,11 @@ static void unicam_node_release(struct v
+ 	unicam_put(node->dev);
+ }
+ 
+-static int register_node(struct unicam_device *unicam, struct unicam_node *node,
+-			 enum v4l2_buf_type type, int pad_id)
++static int unicam_set_default_format(struct unicam_device *unicam,
++				     struct unicam_node *node,
++				     int pad_id,
++				     const struct unicam_fmt **ret_fmt)
+ {
+-	struct video_device *vdev;
+-	struct vb2_queue *q;
+ 	struct v4l2_mbus_framefmt mbus_fmt = {0};
+ 	const struct unicam_fmt *fmt;
+ 	int ret;
+@@ -2415,15 +2832,69 @@ static int register_node(struct unicam_d
+ 		node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
+ 	}
+ 
++	*ret_fmt = fmt;
++
++	return 0;
++}
++
++static void unicam_mc_set_default_format(struct unicam_node *node, int pad_id)
++{
++	if (pad_id == IMAGE_PAD) {
++		struct v4l2_pix_format *pix_fmt = &node->v_fmt.fmt.pix;
++
++		pix_fmt->width = 640;
++		pix_fmt->height = 480;
++		pix_fmt->field = V4L2_FIELD_NONE;
++		pix_fmt->colorspace = V4L2_COLORSPACE_SRGB;
++		pix_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
++		pix_fmt->quantization = V4L2_QUANTIZATION_LIM_RANGE;
++		pix_fmt->xfer_func = V4L2_XFER_FUNC_SRGB;
++		pix_fmt->pixelformat = formats[0].fourcc;
++		unicam_calc_format_size_bpl(node->dev, &formats[0],
++					    &node->v_fmt);
++		node->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
++
++		node->fmt = &formats[0];
++	} else {
++		const struct unicam_fmt *fmt;
++
++		/* Fix this node format as embedded data. */
++		fmt = find_format_by_code(MEDIA_BUS_FMT_SENSOR_DATA);
++		node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
++		node->fmt = fmt;
++
++		node->v_fmt.fmt.meta.buffersize = UNICAM_EMBEDDED_SIZE;
++		node->embedded_lines = 1;
++		node->v_fmt.type = V4L2_BUF_TYPE_META_CAPTURE;
++	}
++}
++
++static int register_node(struct unicam_device *unicam, struct unicam_node *node,
++			 enum v4l2_buf_type type, int pad_id)
++{
++	struct video_device *vdev;
++	struct vb2_queue *q;
++	int ret;
++
+ 	node->dev = unicam;
+ 	node->pad_id = pad_id;
+-	node->fmt = fmt;
+ 
+-	/* Read current subdev format */
+-	if (fmt)
+-		unicam_reset_format(node);
++	if (!unicam->mc_api) {
++		const struct unicam_fmt *fmt;
+ 
+-	if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
++		ret = unicam_set_default_format(unicam, node, pad_id, &fmt);
++		if (ret)
++			return ret;
++		node->fmt = fmt;
++		/* Read current subdev format */
++		if (fmt)
++			unicam_reset_format(node);
++	} else {
++		unicam_mc_set_default_format(node, pad_id);
++	}
++
++	if (!unicam->mc_api &&
++	    v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+ 		v4l2_std_id tvnorms;
+ 
+ 		if (WARN_ON(!v4l2_subdev_has_op(unicam->sensor, video,
+@@ -2446,12 +2917,15 @@ static int register_node(struct unicam_d
+ 
+ 	vdev = &node->video_dev;
+ 	if (pad_id == IMAGE_PAD) {
+-		/* Add controls from the subdevice */
+-		ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
+-					    unicam->sensor->ctrl_handler, NULL,
+-					    true);
+-		if (ret < 0)
+-			return ret;
++		if (!unicam->mc_api) {
++			/* Add controls from the subdevice */
++			ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
++						    unicam->sensor->ctrl_handler,
++						    NULL,
++						    true);
++			if (ret < 0)
++				return ret;
++		}
+ 
+ 		/*
+ 		 * If the sensor subdevice has any controls, associate the node
+@@ -2483,7 +2957,8 @@ static int register_node(struct unicam_d
+ 
+ 	vdev->release = unicam_node_release;
+ 	vdev->fops = &unicam_fops;
+-	vdev->ioctl_ops = &unicam_ioctl_ops;
++	vdev->ioctl_ops = unicam->mc_api ? &unicam_mc_ioctl_ops :
++					   &unicam_ioctl_ops;
+ 	vdev->v4l2_dev = &unicam->v4l2_dev;
+ 	vdev->vfl_dir = VFL_DIR_RX;
+ 	vdev->queue = q;
+@@ -2491,6 +2966,10 @@ static int register_node(struct unicam_d
+ 	vdev->device_caps = (pad_id == IMAGE_PAD) ?
+ 				V4L2_CAP_VIDEO_CAPTURE : V4L2_CAP_META_CAPTURE;
+ 	vdev->device_caps |= V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
++	if (unicam->mc_api) {
++		vdev->device_caps |= V4L2_CAP_IO_MC;
++		vdev->entity.ops = &unicam_mc_entity_ops;
++	}
+ 
+ 	/* Define the device names */
+ 	snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME,
+@@ -2510,48 +2989,61 @@ static int register_node(struct unicam_d
+ 		unicam_err(unicam, "Unable to allocate dummy buffer.\n");
+ 		return -ENOMEM;
+ 	}
+-
+-	if (pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_STD);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUMSTD);
+-	}
+-	if (pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, querystd))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
+-	if (pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_EDID);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_EDID);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_DV_TIMINGS_CAP);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_DV_TIMINGS);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_DV_TIMINGS);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_DV_TIMINGS);
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERY_DV_TIMINGS);
+-	}
+-	if (pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
+-		v4l2_disable_ioctl(&node->video_dev,
+-				   VIDIOC_ENUM_FRAMEINTERVALS);
+-	if (pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
+-	if (pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
+-
+-	if (pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_FRAMESIZES);
+-
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, set_selection))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_SELECTION);
+-
+-	if (node->pad_id == METADATA_PAD ||
+-	    !v4l2_subdev_has_op(unicam->sensor, pad, get_selection))
+-		v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_SELECTION);
++	if (!unicam->mc_api) {
++		if (pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_STD);
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUMSTD);
++		}
++		if (pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, video, querystd))
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
++		if (pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_EDID);
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_EDID);
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_DV_TIMINGS_CAP);
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_G_DV_TIMINGS);
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_S_DV_TIMINGS);
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_ENUM_DV_TIMINGS);
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_QUERY_DV_TIMINGS);
++		}
++		if (pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, pad,
++					enum_frame_interval))
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_ENUM_FRAMEINTERVALS);
++		if (pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, video,
++					g_frame_interval))
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
++		if (pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, video,
++					s_frame_interval))
++			v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
++
++		if (pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, pad,
++					enum_frame_size))
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_ENUM_FRAMESIZES);
++
++		if (node->pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, pad, set_selection))
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_S_SELECTION);
++
++		if (node->pad_id == METADATA_PAD ||
++		    !v4l2_subdev_has_op(unicam->sensor, pad, get_selection))
++			v4l2_disable_ioctl(&node->video_dev,
++					   VIDIOC_G_SELECTION);
++	}
+ 
+ 	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+ 	if (ret) {
+@@ -2618,7 +3110,7 @@ static int unicam_async_complete(struct
+ 		if (unicam->sensor->entity.pads[i].flags & MEDIA_PAD_FL_SOURCE) {
+ 			if (source_pads < MAX_NODES) {
+ 				unicam->node[source_pads].src_pad_id = i;
+-				unicam_err(unicam, "source pad %u is index %u\n",
++				unicam_dbg(3, unicam, "source pad %u is index %u\n",
+ 					   source_pads, i);
+ 			}
+ 			source_pads++;
+@@ -2647,7 +3139,10 @@ static int unicam_async_complete(struct
+ 		}
+ 	}
+ 
+-	ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
++	if (unicam->mc_api)
++		ret = v4l2_device_register_subdev_nodes(&unicam->v4l2_dev);
++	else
++		ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev);
+ 	if (ret) {
+ 		unicam_err(unicam, "Unable to register subdev nodes.\n");
+ 		goto unregister;
+@@ -2807,6 +3302,14 @@ static int unicam_probe(struct platform_
+ 	kref_init(&unicam->kref);
+ 	unicam->pdev = pdev;
+ 
++	/*
++	 * Adopt the current setting of the module parameter, and check if
++	 * device tree requests it.
++	 */
++	unicam->mc_api = media_controller;
++	if (of_property_read_bool(pdev->dev.of_node, "brcm,media-controller"))
++		unicam->mc_api = true;
++
+ 	unicam->base = devm_platform_ioremap_resource(pdev, 0);
+ 	if (IS_ERR(unicam->base)) {
+ 		unicam_err(unicam, "Failed to get main io block\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0544-ARM-dts-vc4-kms-v3d-Always-disable-firmware-HDMI.patch b/target/linux/bcm27xx/patches-5.15/950-0544-ARM-dts-vc4-kms-v3d-Always-disable-firmware-HDMI.patch
new file mode 100644
index 0000000000..3a50706686
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0544-ARM-dts-vc4-kms-v3d-Always-disable-firmware-HDMI.patch
@@ -0,0 +1,47 @@
+From 3942525ae16ac52fe8b632a3d3fb34af9f0d5c5e Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 25 Oct 2021 11:48:18 +0100
+Subject: [PATCH] ARM: dts: vc4-kms-v3d: Always disable firmware HDMI
+
+Both the firmware audio driver and the vc4-kms-v3d driver are capable
+of providing HDMI audio, but only one should be active at any time.
+The vc4-kms-v3d overlays disable the firmware audio driver, but they
+also have a noaudio parameter that as well as disabling the ARM-side
+HDMI audio also re-enables the firmware HDMI audio. This is not
+guaranteed to work and has been seen to break the display completely.
+
+Modify the noaudio parameters so that the firmware HDMI audio support
+remains disabled.
+
+See: https://github.com/raspberrypi/linux/issues/4651
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts     | 4 ++--
+ arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts | 2 +-
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+@@ -116,8 +116,8 @@
+ 	};
+ 
+ 	__overrides__ {
+-		audio   = <0>,"!13", <0>,"=14";
+-		noaudio = <0>,"=13", <0>,"!14";
++		audio   = <0>,"!13";
++		noaudio = <0>,"=13";
+ 		nocomposite = <0>, "!11";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
+@@ -180,7 +180,7 @@
+ 	__overrides__ {
+ 		audio   = <0>,"!17";
+ 		audio1   = <0>,"!18";
+-		noaudio = <0>,"=17", <0>,"=18", <0>,"!19";
++		noaudio = <0>,"=17", <0>,"=18";
+ 		composite = <0>, "!1",
+ 			    <0>, "!2",
+ 			    <0>, "!3",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0545-staging-bcm2835-camera-Add-support-for-H264_MIN_QP-H.patch b/target/linux/bcm27xx/patches-5.15/950-0545-staging-bcm2835-camera-Add-support-for-H264_MIN_QP-H.patch
new file mode 100644
index 0000000000..b2ac1c3fa9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0545-staging-bcm2835-camera-Add-support-for-H264_MIN_QP-H.patch
@@ -0,0 +1,54 @@
+From df55c9751bddc12633eecb01d233ca775b111dc4 Mon Sep 17 00:00:00 2001
+From: soyer <soyer@irl.hu>
+Date: Sat, 23 Oct 2021 12:23:50 +0200
+Subject: [PATCH] staging/bcm2835-camera: Add support for H264_MIN_QP,
+ H264_MAX_QP
+
+Signed-off-by: Gergo Koteles <soyer@irl.hu>
+---
+ .../bcm2835-camera/bcm2835-camera.h           |  2 +-
+ .../vc04_services/bcm2835-camera/controls.c   | 22 +++++++++++++++++++
+ 2 files changed, 23 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
+@@ -13,7 +13,7 @@
+  * core driver device
+  */
+ 
+-#define V4L2_CTRL_COUNT 29 /* number of v4l controls */
++#define V4L2_CTRL_COUNT 31 /* number of v4l controls */
+ 
+ enum {
+ 	COMP_CAMERA = 0,
+--- a/drivers/staging/vc04_services/bcm2835-camera/controls.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c
+@@ -1270,6 +1270,28 @@ static const struct bm2835_mmal_v4l2_ctr
+ 		.mmal_id = MMAL_PARAMETER_INTRAPERIOD,
+ 		.setter = ctrl_set_video_encode_param_output,
+ 	},
++	{
++		.id = V4L2_CID_MPEG_VIDEO_H264_MIN_QP,
++		.type = MMAL_CONTROL_TYPE_STD,
++		.min = 0,
++		.max = 51,
++		.def = 0,
++		.step = 1,
++		.imenu = NULL,
++		.mmal_id = MMAL_PARAMETER_VIDEO_ENCODE_MIN_QUANT,
++		.setter = ctrl_set_video_encode_param_output,
++	},
++	{
++		.id = V4L2_CID_MPEG_VIDEO_H264_MAX_QP,
++		.type = MMAL_CONTROL_TYPE_STD,
++		.min = 0,
++		.max = 51,
++		.def = 0,
++		.step = 1,
++		.imenu = NULL,
++		.mmal_id = MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT,
++		.setter = ctrl_set_video_encode_param_output,
++	},
+ };
+ 
+ int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0546-staging-bcm2835-camera-Add-support-for-MPEG_VIDEO_FO.patch b/target/linux/bcm27xx/patches-5.15/950-0546-staging-bcm2835-camera-Add-support-for-MPEG_VIDEO_FO.patch
new file mode 100644
index 0000000000..4d38e7a7e3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0546-staging-bcm2835-camera-Add-support-for-MPEG_VIDEO_FO.patch
@@ -0,0 +1,43 @@
+From e7a3b02059247ee380cf1d91e2c61beec5cae160 Mon Sep 17 00:00:00 2001
+From: Gergo Koteles <soyer@irl.hu>
+Date: Sun, 24 Oct 2021 23:18:09 +0200
+Subject: [PATCH] staging/bcm2835-camera: Add support for
+ MPEG_VIDEO_FORCE_KEY_FRAME
+
+Signed-off-by: Gergo Koteles <soyer@irl.hu>
+---
+ .../vc04_services/bcm2835-camera/bcm2835-camera.h     |  2 +-
+ .../staging/vc04_services/bcm2835-camera/controls.c   | 11 +++++++++++
+ 2 files changed, 12 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
+@@ -13,7 +13,7 @@
+  * core driver device
+  */
+ 
+-#define V4L2_CTRL_COUNT 31 /* number of v4l controls */
++#define V4L2_CTRL_COUNT 32 /* number of v4l controls */
+ 
+ enum {
+ 	COMP_CAMERA = 0,
+--- a/drivers/staging/vc04_services/bcm2835-camera/controls.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/controls.c
+@@ -1292,6 +1292,17 @@ static const struct bm2835_mmal_v4l2_ctr
+ 		.mmal_id = MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT,
+ 		.setter = ctrl_set_video_encode_param_output,
+ 	},
++	{
++		.id = V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME,
++		.type = MMAL_CONTROL_TYPE_STD,
++		.min = 0,
++		.max = 0,
++		.def = 0,
++		.step = 0,
++		.imenu = NULL,
++		.mmal_id = MMAL_PARAMETER_VIDEO_REQUEST_I_FRAME,
++		.setter = ctrl_set_video_encode_param_output,
++	},
+ };
+ 
+ int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0547-ARM-dts-Add-Pi-Zero-2-support.patch b/target/linux/bcm27xx/patches-5.15/950-0547-ARM-dts-Add-Pi-Zero-2-support.patch
new file mode 100644
index 0000000000..4e325e7e71
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0547-ARM-dts-Add-Pi-Zero-2-support.patch
@@ -0,0 +1,219 @@
+From ab5164dbd0241da27ec87eff34408dd97d9658c0 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 9 Sep 2021 10:37:15 +0100
+Subject: [PATCH] ARM: dts: Add Pi Zero 2 support
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/Makefile                    |   1 +
+ arch/arm/boot/dts/bcm2710-rpi-zero-2.dts      | 177 ++++++++++++++++++
+ arch/arm64/boot/dts/broadcom/Makefile         |   1 +
+ .../boot/dts/broadcom/bcm2710-rpi-zero-2.dts  |   1 +
+ 4 files changed, 180 insertions(+)
+ create mode 100644 arch/arm/boot/dts/bcm2710-rpi-zero-2.dts
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm2710-rpi-zero-2.dts
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
+ 	bcm2708-rpi-cm.dtb \
+ 	bcm2708-rpi-zero.dtb \
+ 	bcm2708-rpi-zero-w.dtb \
++	bcm2710-rpi-zero-2.dtb \
+ 	bcm2709-rpi-2-b.dtb \
+ 	bcm2710-rpi-2-b.dtb \
+ 	bcm2710-rpi-3-b.dtb \
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2.dts
+@@ -0,0 +1,177 @@
++/dts-v1/;
++
++#include "bcm2710.dtsi"
++#include "bcm2709-rpi.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm2708-rpi-bt.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,model-zero-2", "brcm,bcm2837";
++	model = "Raspberry Pi Zero 2";
++
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc1 = &mmcnr;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <7>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = <43>;
++		brcm,function = <4>; /* alt0:GPCLK2 */
++		brcm,pull = <0>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <30 31 32 33>;
++		brcm,function = <7>; /* alt3=UART0 */
++		brcm,pull = <2 0 0 2>; /* up none none up */
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <>;
++		brcm,function = <>;
++	};
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_pins>;
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "actpwr";
++		gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++	brcm,disable-headphones = <1>;
++};
++
++&bt {
++	shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++};
++
++&minibt {
++	shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 40 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+--- a/arch/arm64/boot/dts/broadcom/Makefile
++++ b/arch/arm64/boot/dts/broadcom/Makefile
+@@ -5,6 +5,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rp
+ 			      bcm2837-rpi-3-b.dtb \
+ 			      bcm2837-rpi-3-b-plus.dtb \
+ 			      bcm2837-rpi-cm3-io3.dtb
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-zero-2.dtb
+ dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-2-b.dtb
+ dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b.dtb
+ dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b-plus.dtb
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-zero-2.dts
+@@ -0,0 +1 @@
++#include "../../../../arm/boot/dts/bcm2710-rpi-zero-2.dts"
diff --git a/target/linux/bcm27xx/patches-5.15/950-0548-clk-raspberrypi-Support-VEC-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0548-clk-raspberrypi-Support-VEC-clock.patch
new file mode 100644
index 0000000000..d31cc64168
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0548-clk-raspberrypi-Support-VEC-clock.patch
@@ -0,0 +1,36 @@
+From 8cef8cceb28fc9c5521633cfe45bd6971753023b Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 19 Oct 2021 14:13:53 +0100
+Subject: [PATCH] clk-raspberrypi: Support VEC clock
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -33,6 +33,7 @@ enum rpi_firmware_clk_id {
+ 	RPI_FIRMWARE_EMMC2_CLK_ID,
+ 	RPI_FIRMWARE_M2MC_CLK_ID,
+ 	RPI_FIRMWARE_PIXEL_BVB_CLK_ID,
++	RPI_FIRMWARE_VEC_CLK_ID,
+ 	RPI_FIRMWARE_NUM_CLK_ID,
+ };
+ 
+@@ -51,6 +52,7 @@ static char *rpi_firmware_clk_names[] =
+ 	[RPI_FIRMWARE_EMMC2_CLK_ID]	= "emmc2",
+ 	[RPI_FIRMWARE_M2MC_CLK_ID]	= "m2mc",
+ 	[RPI_FIRMWARE_PIXEL_BVB_CLK_ID]	= "pixel-bvb",
++	[RPI_FIRMWARE_VEC_CLK_ID]	= "vec",
+ };
+ 
+ #define RPI_FIRMWARE_STATE_ENABLE_BIT	BIT(0)
+@@ -273,6 +275,7 @@ static int raspberrypi_discover_clocks(s
+ 		case RPI_FIRMWARE_V3D_CLK_ID:
+ 		case RPI_FIRMWARE_HEVC_CLK_ID:
+ 		case RPI_FIRMWARE_PIXEL_BVB_CLK_ID:
++		case RPI_FIRMWARE_VEC_CLK_ID:
+ 			hw = raspberrypi_clk_register(rpi, clks->parent,
+ 						      clks->id);
+ 			if (IS_ERR(hw))
diff --git a/target/linux/bcm27xx/patches-5.15/950-0549-dt-Move-VEC-clock-to-clk-raspberrypi.patch b/target/linux/bcm27xx/patches-5.15/950-0549-dt-Move-VEC-clock-to-clk-raspberrypi.patch
new file mode 100644
index 0000000000..8890c35825
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0549-dt-Move-VEC-clock-to-clk-raspberrypi.patch
@@ -0,0 +1,36 @@
+From 32d5f26a939d8d4477309bc601c1e7901fb01baa Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 19 Oct 2021 14:15:45 +0100
+Subject: [PATCH] dt: Move VEC clock to clk-raspberrypi
+
+clk-2835 is deprecated and gets an innacurate clock for VEC (107MHz).
+Switch to clk-raspberrypi which uses the right PLL to get an accurate 108MHz.
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ arch/arm/boot/dts/bcm2711.dtsi        | 2 +-
+ arch/arm/boot/dts/bcm2835-common.dtsi | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2711.dtsi
++++ b/arch/arm/boot/dts/bcm2711.dtsi
+@@ -304,7 +304,7 @@
+ 		vec: vec@7ec13000 {
+ 			compatible = "brcm,bcm2711-vec";
+ 			reg = <0x7ec13000 0x1000>;
+-			clocks = <&clocks BCM2835_CLOCK_VEC>;
++			clocks = <&firmware_clocks 15>;
+ 			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+ 			status = "disabled";
+ 		};
+--- a/arch/arm/boot/dts/bcm2835-common.dtsi
++++ b/arch/arm/boot/dts/bcm2835-common.dtsi
+@@ -109,7 +109,7 @@
+ 		vec: vec@7e806000 {
+ 			compatible = "brcm,bcm2835-vec";
+ 			reg = <0x7e806000 0x1000>;
+-			clocks = <&clocks BCM2835_CLOCK_VEC>;
++			clocks = <&firmware_clocks 15>;
+ 			interrupts = <2 27>;
+ 			status = "disabled";
+ 		};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0550-clk-bcm2835-Remove-VEC-clock-support.patch b/target/linux/bcm27xx/patches-5.15/950-0550-clk-bcm2835-Remove-VEC-clock-support.patch
new file mode 100644
index 0000000000..dc198ebbcc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0550-clk-bcm2835-Remove-VEC-clock-support.patch
@@ -0,0 +1,34 @@
+From d538fde95ee56c030afa988dfda3abd6c424389c Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Tue, 19 Oct 2021 14:14:55 +0100
+Subject: [PATCH] clk-bcm2835: Remove VEC clock support
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 15 ---------------
+ 1 file changed, 15 deletions(-)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -2208,21 +2208,6 @@ static const struct bcm2835_clk_desc clk
+ 		.frac_bits = 12,
+ 		.tcnt_mux = 28),
+ 
+-	/* TV encoder clock.  Only operating frequency is 108Mhz.  */
+-	[BCM2835_CLOCK_VEC]	= REGISTER_PER_CLK(
+-		SOC_ALL,
+-		.name = "vec",
+-		.ctl_reg = CM_VECCTL,
+-		.div_reg = CM_VECDIV,
+-		.int_bits = 4,
+-		.frac_bits = 0,
+-		/*
+-		 * Allow rate change propagation only on PLLH_AUX which is
+-		 * assigned index 7 in the parent array.
+-		 */
+-		.set_rate_parent = BIT(7),
+-		.tcnt_mux = 29),
+-
+ 	/* dsi clocks */
+ 	[BCM2835_CLOCK_DSI0E]	= REGISTER_PER_CLK(
+ 		SOC_ALL,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0551-drm-vc4-Add-support-for-gamma-on-BCM2711.patch b/target/linux/bcm27xx/patches-5.15/950-0551-drm-vc4-Add-support-for-gamma-on-BCM2711.patch
new file mode 100644
index 0000000000..56b3b02486
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0551-drm-vc4-Add-support-for-gamma-on-BCM2711.patch
@@ -0,0 +1,272 @@
+From fc26e29e257c8d737b78e4581f7ffd9be338a70c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 27 Apr 2021 14:24:21 +0200
+Subject: [PATCH] drm/vc4: Add support for gamma on BCM2711
+
+BCM2711 changes from a 256 entry lookup table to a 16 point
+piecewise linear function as the pipeline bitdepth has increased
+to make a LUT unwieldy.
+
+Implement a simple conversion from a 256 entry LUT that userspace
+is likely to expect to 16 evenly spread points in the PWL. This
+could be improved with curve fitting at a later date.
+
+Co-developed-by: Juerg Haefliger <juergh@canonical.com>
+Signed-off-by: Juerg Haefliger <juergh@canonical.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 35 +++++++++++---
+ drivers/gpu/drm/vc4/vc4_drv.h  | 28 +++++++++--
+ drivers/gpu/drm/vc4/vc4_hvs.c  | 87 ++++++++++++++++++++++++++++++++--
+ drivers/gpu/drm/vc4/vc4_regs.h | 22 +++++++++
+ 4 files changed, 159 insertions(+), 13 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -1164,19 +1164,42 @@ int vc4_crtc_init(struct drm_device *drm
+ 
+ 	if (!vc4->hvs->hvs5) {
+ 		drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));
++	} else {
++		/* This is a lie for hvs5 which uses a 16 point PWL, but it
++		 * allows for something smarter than just 16 linearly spaced
++		 * segments. Conversion is done in vc5_hvs_update_gamma_lut.
++		 */
++		drm_mode_crtc_set_gamma_size(crtc, 256);
++	}
+ 
+-		drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
++	drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
+ 
++	if (!vc4->hvs->hvs5) {
+ 		/* We support CTM, but only for one CRTC at a time. It's therefore
+ 		 * implemented as private driver state in vc4_kms, not here.
+ 		 */
+ 		drm_crtc_enable_color_mgmt(crtc, 0, true, crtc->gamma_size);
+-	}
+ 
+-	for (i = 0; i < crtc->gamma_size; i++) {
+-		vc4_crtc->lut_r[i] = i;
+-		vc4_crtc->lut_g[i] = i;
+-		vc4_crtc->lut_b[i] = i;
++		/* Initialize the VC4 gamma LUTs */
++		for (i = 0; i < crtc->gamma_size; i++) {
++			vc4_crtc->lut_r[i] = i;
++			vc4_crtc->lut_g[i] = i;
++			vc4_crtc->lut_b[i] = i;
++		}
++	} else {
++		/* Initialize the VC5 gamma PWL entries. Assume 12-bit pipeline,
++		 * evenly spread over full range.
++		 */
++		for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++) {
++			vc4_crtc->pwl_r[i] =
++				VC5_HVS_SET_GAMMA_ENTRY(i << 8, i << 12, 1 << 8);
++			vc4_crtc->pwl_g[i] =
++				VC5_HVS_SET_GAMMA_ENTRY(i << 8, i << 12, 1 << 8);
++			vc4_crtc->pwl_b[i] =
++				VC5_HVS_SET_GAMMA_ENTRY(i << 8, i << 12, 1 << 8);
++			vc4_crtc->pwl_a[i] =
++				VC5_HVS_SET_GAMMA_ENTRY(i << 8, i << 12, 1 << 8);
++		}
+ 	}
+ 
+ 	return 0;
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -19,6 +19,7 @@
+ #include <drm/drm_modeset_lock.h>
+ 
+ #include "uapi/drm/vc4_drm.h"
++#include "vc4_regs.h"
+ 
+ struct drm_device;
+ struct drm_gem_object;
+@@ -481,6 +482,17 @@ struct vc4_pv_data {
+ 
+ };
+ 
++struct vc5_gamma_entry {
++	u32 x_c_terms;
++	u32 grad_term;
++};
++
++#define VC5_HVS_SET_GAMMA_ENTRY(x, c, g) (struct vc5_gamma_entry){	\
++	.x_c_terms = VC4_SET_FIELD((x), SCALER5_DSPGAMMA_OFF_X) | 	\
++		     VC4_SET_FIELD((c), SCALER5_DSPGAMMA_OFF_C),	\
++	.grad_term = (g)						\
++}
++
+ struct vc4_crtc {
+ 	struct drm_crtc base;
+ 	struct platform_device *pdev;
+@@ -490,9 +502,19 @@ struct vc4_crtc {
+ 	/* Timestamp at start of vblank irq - unaffected by lock delays. */
+ 	ktime_t t_vblank;
+ 
+-	u8 lut_r[256];
+-	u8 lut_g[256];
+-	u8 lut_b[256];
++	union {
++		struct {  /* VC4 gamma LUT */
++			u8 lut_r[256];
++			u8 lut_g[256];
++			u8 lut_b[256];
++		};
++		struct {  /* VC5 gamma PWL entries */
++			struct vc5_gamma_entry pwl_r[SCALER5_DSPGAMMA_NUM_POINTS];
++			struct vc5_gamma_entry pwl_g[SCALER5_DSPGAMMA_NUM_POINTS];
++			struct vc5_gamma_entry pwl_b[SCALER5_DSPGAMMA_NUM_POINTS];
++			struct vc5_gamma_entry pwl_a[SCALER5_DSPGAMMA_NUM_POINTS];
++		};
++	};
+ 
+ 	struct drm_pending_vblank_event *event;
+ 
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -236,6 +236,80 @@ static void vc4_hvs_update_gamma_lut(str
+ 	vc4_hvs_lut_load(crtc);
+ }
+ 
++static void vc5_hvs_write_gamma_entry(struct vc4_dev *vc4,
++				      u32 offset,
++				      struct vc5_gamma_entry *gamma)
++{
++	HVS_WRITE(offset, gamma->x_c_terms);
++	HVS_WRITE(offset + 4, gamma->grad_term);
++}
++
++static void vc5_hvs_lut_load(struct drm_crtc *crtc)
++{
++	struct drm_device *dev = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
++	u32 i;
++	u32 offset = SCALER5_DSPGAMMA_START +
++		vc4_state->assigned_channel * SCALER5_DSPGAMMA_CHAN_OFFSET;
++
++	for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
++		vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_r[i]);
++	for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
++		vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_g[i]);
++	for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
++		vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_b[i]);
++
++	if (vc4_state->assigned_channel == 2) {
++		/* Alpha only valid on channel 2 */
++		for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
++			vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_a[i]);
++	}
++}
++
++static void vc5_hvs_update_gamma_lut(struct drm_crtc *crtc)
++{
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++	struct drm_color_lut *lut = crtc->state->gamma_lut->data;
++	unsigned int step, i;
++	u32 start, end;
++
++#define VC5_HVS_UPDATE_GAMMA_ENTRY_FROM_LUT(pwl, chan)			\
++	start = drm_color_lut_extract(lut[i * step].chan, 12);		\
++	end = drm_color_lut_extract(lut[(i + 1) * step - 1].chan, 12);	\
++									\
++	/* Negative gradients not permitted by the hardware, so		\
++	 * flatten such points out.					\
++	 */								\
++	if (end < start)						\
++		end = start;						\
++									\
++	/* Assume 12bit pipeline.					\
++	 * X evenly spread over full range (12 bit).			\
++	 * C as U12.4 format.						\
++	 * Gradient as U4.8 format.					\
++	*/								\
++	vc4_crtc->pwl[i] =						\
++		VC5_HVS_SET_GAMMA_ENTRY(i << 8, start << 4,		\
++				((end - start) << 4) / (step - 1))
++
++	/* HVS5 has a 16 point piecewise linear function for each colour
++	 * channel (including alpha on channel 2) on each display channel.
++	 *
++	 * Currently take a crude subsample of the gamma LUT, but this could
++	 * be improved to implement curve fitting.
++	 */
++	step = crtc->gamma_size / SCALER5_DSPGAMMA_NUM_POINTS;
++	for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++) {
++		VC5_HVS_UPDATE_GAMMA_ENTRY_FROM_LUT(pwl_r, red);
++		VC5_HVS_UPDATE_GAMMA_ENTRY_FROM_LUT(pwl_g, green);
++		VC5_HVS_UPDATE_GAMMA_ENTRY_FROM_LUT(pwl_b, blue);
++	}
++
++	vc5_hvs_lut_load(crtc);
++}
++
+ int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+@@ -329,14 +403,16 @@ static int vc4_hvs_init_channel(struct v
+ 	dispbkgndx &= ~SCALER_DISPBKGND_INTERLACE;
+ 
+ 	HVS_WRITE(SCALER_DISPBKGNDX(chan), dispbkgndx |
+-		  SCALER_DISPBKGND_AUTOHS |
+-		  ((!vc4->hvs->hvs5) ? SCALER_DISPBKGND_GAMMA : 0) |
++		  SCALER_DISPBKGND_AUTOHS | SCALER_DISPBKGND_GAMMA |
+ 		  (interlace ? SCALER_DISPBKGND_INTERLACE : 0));
+ 
+ 	/* Reload the LUT, since the SRAMs would have been disabled if
+ 	 * all CRTCs had SCALER_DISPBKGND_GAMMA unset at once.
+ 	 */
+-	vc4_hvs_lut_load(crtc);
++	if (!vc4->hvs->hvs5)
++		vc4_hvs_lut_load(crtc);
++	else
++		vc5_hvs_lut_load(crtc);
+ 
+ 	return 0;
+ }
+@@ -534,7 +610,10 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 		u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(vc4_state->assigned_channel));
+ 
+ 		if (crtc->state->gamma_lut) {
+-			vc4_hvs_update_gamma_lut(crtc);
++			if (!vc4->hvs->hvs5)
++				vc4_hvs_update_gamma_lut(crtc);
++			else
++				vc5_hvs_update_gamma_lut(crtc);
+ 			dispbkgndx |= SCALER_DISPBKGND_GAMMA;
+ 		} else {
+ 			/* Unsetting DISPBKGND_GAMMA skips the gamma lut step
+--- a/drivers/gpu/drm/vc4/vc4_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_regs.h
+@@ -491,6 +491,28 @@
+ #define SCALER_DLIST_START                      0x00002000
+ #define SCALER_DLIST_SIZE                       0x00004000
+ 
++/* Gamma PWL for each channel. 16 points for each of 4 colour channels (alpha
++ * only on channel 2). 8 bytes per entry, offsets first, then gradient:
++ *   Y = GRAD * X + C
++ *
++ * Values for X and C are left justified, and vary depending on the width of
++ * the HVS channel:
++ *    8-bit pipeline: X uses [31:24], C is U8.8 format, and GRAD is U4.8.
++ *   12-bit pipeline: X uses [31:20], C is U12.4 format, and GRAD is U4.8.
++ *
++ * The 3 HVS channels start at 0x400 offsets (ie chan 1 starts at 0x2400, and
++ * chan 2 at 0x2800).
++ */
++#define SCALER5_DSPGAMMA_NUM_POINTS		16
++#define SCALER5_DSPGAMMA_START			0x00002000
++#define SCALER5_DSPGAMMA_CHAN_OFFSET		0x400
++# define SCALER5_DSPGAMMA_OFF_X_MASK		VC4_MASK(31, 20)
++# define SCALER5_DSPGAMMA_OFF_X_SHIFT		20
++# define SCALER5_DSPGAMMA_OFF_C_MASK		VC4_MASK(15, 0)
++# define SCALER5_DSPGAMMA_OFF_C_SHIFT		0
++# define SCALER5_DSPGAMMA_GRAD_MASK		VC4_MASK(11, 0)
++# define SCALER5_DSPGAMMA_GRAD_SHIFT		0
++
+ #define SCALER5_DLIST_START			0x00004000
+ 
+ # define VC4_HDMI_SW_RESET_FORMAT_DETECT	BIT(1)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0552-drm-vc4-Add-debugfs-node-that-dumps-the-vc5-gamma-PW.patch b/target/linux/bcm27xx/patches-5.15/950-0552-drm-vc4-Add-debugfs-node-that-dumps-the-vc5-gamma-PW.patch
new file mode 100644
index 0000000000..700b68dc9d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0552-drm-vc4-Add-debugfs-node-that-dumps-the-vc5-gamma-PW.patch
@@ -0,0 +1,114 @@
+From db56206e77d1a71c145669dc41d0ada496ea8e4f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 28 Apr 2021 12:32:10 +0200
+Subject: [PATCH] drm/vc4: Add debugfs node that dumps the vc5 gamma
+ PWL entries
+
+This helps with debugging the conversion from a 256 point gamma LUT to
+16 point PWL entries as used by the BCM2711.
+
+Co-developed-by: Juerg Haefliger <juergh@canonical.com>
+Signed-off-by: Juerg Haefliger <juergh@canonical.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 81 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 81 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -134,6 +134,84 @@ static int vc4_hvs_debugfs_dlist(struct
+ 	return 0;
+ }
+ 
++static int vc5_hvs_debugfs_gamma(struct seq_file *m, void *data)
++{
++	struct drm_info_node *node = m->private;
++	struct drm_device *dev = node->minor->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct drm_printer p = drm_seq_file_printer(m);
++	unsigned int i, chan;
++	u32 dispstat, dispbkgndx;
++
++	for (chan = 0; chan < SCALER_CHANNELS_COUNT; chan++) {
++		u32 x_c, grad;
++		u32 offset = SCALER5_DSPGAMMA_START +
++			chan * SCALER5_DSPGAMMA_CHAN_OFFSET;
++
++		dispstat = VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(chan)),
++					 SCALER_DISPSTATX_MODE);
++		if (dispstat == SCALER_DISPSTATX_MODE_DISABLED ||
++		    dispstat == SCALER_DISPSTATX_MODE_EOF) {
++			drm_printf(&p, "HVS channel %u: Channel disabled\n", chan);
++			continue;
++		}
++
++		dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(chan));
++		if (!(dispbkgndx & SCALER_DISPBKGND_GAMMA)) {
++			drm_printf(&p, "HVS channel %u: Gamma disabled\n", chan);
++			continue;
++		}
++
++		drm_printf(&p, "HVS channel %u:\n", chan);
++		drm_printf(&p, "  red:\n");
++		for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8) {
++			x_c = HVS_READ(offset);
++			grad = HVS_READ(offset + 4);
++			drm_printf(&p, "  %08x %08x - x %u, c %u, grad %u\n",
++				   x_c, grad,
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_X),
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_C),
++				   grad);
++		}
++		drm_printf(&p, "  green:\n");
++		for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8) {
++			x_c = HVS_READ(offset);
++			grad = HVS_READ(offset + 4);
++			drm_printf(&p, "  %08x %08x - x %u, c %u, grad %u\n",
++				   x_c, grad,
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_X),
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_C),
++				   grad);
++		}
++		drm_printf(&p, "  blue:\n");
++		for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8) {
++			x_c = HVS_READ(offset);
++			grad = HVS_READ(offset + 4);
++			drm_printf(&p, "  %08x %08x - x %u, c %u, grad %u\n",
++				   x_c, grad,
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_X),
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_C),
++				   grad);
++		}
++
++		/* Alpha only valid on channel 2 */
++		if (chan != 2)
++			continue;
++
++		drm_printf(&p, "  alpha:\n");
++		for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8) {
++			x_c = HVS_READ(offset);
++			grad = HVS_READ(offset + 4);
++			drm_printf(&p, "  %08x %08x - x %u, c %u, grad %u\n",
++				   x_c, grad,
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_X),
++				   VC4_GET_FIELD(x_c, SCALER5_DSPGAMMA_OFF_C),
++				   grad);
++		}
++	}
++	return 0;
++}
++
+ /* The filter kernel is composed of dwords each containing 3 9-bit
+  * signed integers packed next to each other.
+  */
+@@ -809,6 +887,9 @@ static int vc4_hvs_bind(struct device *d
+ 			     NULL);
+ 	vc4_debugfs_add_file(drm, "hvs_dlists", vc4_hvs_debugfs_dlist,
+ 			     NULL);
++	if (hvs->hvs5)
++		vc4_debugfs_add_file(drm, "hvs_gamma", vc5_hvs_debugfs_gamma,
++				     NULL);
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch b/target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch
new file mode 100644
index 0000000000..df9f912731
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0553-drm-vc4-hvs-Force-modeset-on-gamma-lut-change.patch
@@ -0,0 +1,105 @@
+From 0d33c9d1bf2f8eddefb00b426d47c0cb087aa173 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 14 Jun 2021 15:28:30 +0200
+Subject: [PATCH] drm/vc4: hvs: Force modeset on gamma lut change
+
+The HVS Gamma block can only be updated when idle, so we need to disable
+the HVS channel when the gamma property is set in an atomic commit.
+
+Since the pixelvalve cannot have its assigned channel halted without
+stalling unless it's disabled as well, in our case that means forcing a
+full disable / enable cycle on the pipeline.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 17 +++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_drv.h  |  3 +++
+ drivers/gpu/drm/vc4/vc4_hvs.c  | 32 +++++++++++++++++++++++++++++++-
+ 3 files changed, 51 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -294,6 +294,23 @@ struct drm_encoder *vc4_get_crtc_encoder
+ 	return NULL;
+ }
+ 
++#define drm_for_each_connector_mask(connector, dev, connector_mask) \
++	list_for_each_entry((connector), &(dev)->mode_config.connector_list, head) \
++		for_each_if ((connector_mask) & drm_connector_mask(connector))
++
++struct drm_connector *vc4_get_crtc_connector(struct drm_crtc *crtc,
++					     struct drm_crtc_state *state)
++{
++	struct drm_connector *connector;
++
++	WARN_ON(hweight32(state->connector_mask) > 1);
++
++	drm_for_each_connector_mask(connector, crtc->dev, state->connector_mask)
++		return connector;
++
++	return NULL;
++}
++
+ static void vc4_crtc_pixelvalve_reset(struct drm_crtc *crtc)
+ {
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -568,6 +568,9 @@ vc4_crtc_to_vc4_pv_data(const struct vc4
+ 	return container_of(data, struct vc4_pv_data, base);
+ }
+ 
++struct drm_connector *vc4_get_crtc_connector(struct drm_crtc *crtc,
++					     struct drm_crtc_state *state);
++
+ struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+ 					 struct drm_crtc_state *state);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -519,6 +519,36 @@ void vc4_hvs_stop_channel(struct drm_dev
+ 		     SCALER_DISPSTATX_EMPTY);
+ }
+ 
++static int vc4_hvs_gamma_check(struct drm_crtc *crtc,
++			       struct drm_atomic_state *state)
++{
++	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
++	struct drm_connector_state *conn_state;
++	struct drm_connector *connector;
++	struct drm_device *dev = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++
++	if (!vc4->hvs->hvs5)
++		return 0;
++
++	if (!crtc_state->color_mgmt_changed)
++		return 0;
++
++	connector = vc4_get_crtc_connector(crtc, crtc_state);
++	if (!connector)
++		return -EINVAL;
++
++	if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA))
++		return 0;
++
++	conn_state = drm_atomic_get_connector_state(state, connector);
++	if (!conn_state)
++		return -EINVAL;
++
++	crtc_state->mode_changed = true;
++	return 0;
++}
++
+ int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state)
+ {
+ 	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+@@ -549,7 +579,7 @@ int vc4_hvs_atomic_check(struct drm_crtc
+ 	if (ret)
+ 		return ret;
+ 
+-	return 0;
++	return vc4_hvs_gamma_check(crtc, state);
+ }
+ 
+ static void vc4_hvs_update_dlist(struct drm_crtc *crtc)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0554-media-i2c-imx477-Add-vsync-trigger_mode-parameter.patch b/target/linux/bcm27xx/patches-5.15/950-0554-media-i2c-imx477-Add-vsync-trigger_mode-parameter.patch
new file mode 100644
index 0000000000..52835f79ea
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0554-media-i2c-imx477-Add-vsync-trigger_mode-parameter.patch
@@ -0,0 +1,64 @@
+From 9ed9132402b92d1957927c8719f37d8b95bb00ff Mon Sep 17 00:00:00 2001
+From: neocortex-vision <oss@neocortexvision.com>
+Date: Thu, 28 Oct 2021 17:37:36 +0100
+Subject: [PATCH] media: i2c: imx477: Add vsync trigger_mode parameter
+
+trigger_mode == 0 (default) => no effect / no registers written
+trigger_mode == 1           => source
+trigger_mode == 2           => sink
+
+This can be set e.g. in /boot/cmdline.txt as imx477.trigger_mode=N
+
+Signed-off-by: Jonas Jacob <jonas.jacob@neocortexvision.com>
+---
+ drivers/media/i2c/imx477.c | 25 +++++++++++++++++++++++++
+ 1 file changed, 25 insertions(+)
+
+--- a/drivers/media/i2c/imx477.c
++++ b/drivers/media/i2c/imx477.c
+@@ -25,6 +25,10 @@ static int dpc_enable = 1;
+ module_param(dpc_enable, int, 0644);
+ MODULE_PARM_DESC(dpc_enable, "Enable on-sensor DPC");
+ 
++static int trigger_mode;
++module_param(trigger_mode, int, 0644);
++MODULE_PARM_DESC(trigger_mode, "Set vsync trigger mode: 1=source, 2=sink");
++
+ #define IMX477_REG_VALUE_08BIT		1
+ #define IMX477_REG_VALUE_16BIT		2
+ 
+@@ -98,6 +102,12 @@ MODULE_PARM_DESC(dpc_enable, "Enable on-
+ #define IMX477_TEST_PATTERN_B_DEFAULT	0
+ #define IMX477_TEST_PATTERN_GB_DEFAULT	0
+ 
++/* Trigger mode */
++#define IMX477_REG_MC_MODE		0x3f0b
++#define IMX477_REG_MS_SEL		0x3041
++#define IMX477_REG_XVS_IO_CTRL		0x3040
++#define IMX477_REG_EXTOUT_EN		0x4b81
++
+ /* Embedded metadata stream structure */
+ #define IMX477_EMBEDDED_LINE_WIDTH 16384
+ #define IMX477_NUM_EMBEDDED_LINES 1
+@@ -1721,6 +1731,21 @@ static int imx477_start_streaming(struct
+ 	imx477_write_reg(imx477, 0x0b05, IMX477_REG_VALUE_08BIT, !!dpc_enable);
+ 	imx477_write_reg(imx477, 0x0b06, IMX477_REG_VALUE_08BIT, !!dpc_enable);
+ 
++	/* Set vsync trigger mode */
++	if (trigger_mode != 0) {
++		/* trigger_mode == 1 for source, 2 for sink */
++		const u32 val = (trigger_mode == 1) ? 1 : 0;
++
++		imx477_write_reg(imx477, IMX477_REG_MC_MODE,
++				 IMX477_REG_VALUE_08BIT, 1);
++		imx477_write_reg(imx477, IMX477_REG_MS_SEL,
++				 IMX477_REG_VALUE_08BIT, val);
++		imx477_write_reg(imx477, IMX477_REG_XVS_IO_CTRL,
++				 IMX477_REG_VALUE_08BIT, val);
++		imx477_write_reg(imx477, IMX477_REG_EXTOUT_EN,
++				 IMX477_REG_VALUE_08BIT, val);
++	}
++
+ 	/* Apply customized values from user */
+ 	ret =  __v4l2_ctrl_handler_setup(imx477->sd.ctrl_handler);
+ 	if (ret)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0555-drm-vc4-Relax-VEC-modeline-requirements-and-add-prog.patch b/target/linux/bcm27xx/patches-5.15/950-0555-drm-vc4-Relax-VEC-modeline-requirements-and-add-prog.patch
new file mode 100644
index 0000000000..51fac0e0d4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0555-drm-vc4-Relax-VEC-modeline-requirements-and-add-prog.patch
@@ -0,0 +1,156 @@
+From ae200c4c1d2d0c9f827e7f73d00f00074e3a7a04 Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:08:08 +0200
+Subject: [PATCH] drm/vc4: Relax VEC modeline requirements and add
+ progressive mode support
+
+Make vc4_vec_encoder_atomic_check() accept arbitrary modelines, as long
+as they result in somewhat sane output from the VEC. The bounds have
+been determined empirically. Additionally, add support for the
+progressive 262-line and 312-line modes.
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c |  1 +
+ drivers/gpu/drm/vc4/vc4_vec.c  | 97 ++++++++++++++++++++++++++++------
+ 2 files changed, 83 insertions(+), 15 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -410,6 +410,7 @@ static void vc4_crtc_config_pv(struct dr
+ 		CRTC_WRITE(PV_V_CONTROL,
+ 			   PV_VCONTROL_CONTINUOUS |
+ 			   (is_dsi ? PV_VCONTROL_DSI : 0));
++		CRTC_WRITE(PV_VSYNCD_EVEN, 0);
+ 	}
+ 
+ 	CRTC_WRITE(PV_VERTA,
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -423,18 +423,11 @@ static int vc4_vec_connector_atomic_chec
+ 	struct drm_connector_state *new_state =
+ 		drm_atomic_get_new_connector_state(state, conn);
+ 
+-	const struct vc4_vec_tv_mode *vec_mode =
+-		&vc4_vec_tv_modes[new_state->tv.mode];
+-
+-	if (new_state->crtc) {
++	if (new_state->crtc && old_state->tv.mode != new_state->tv.mode) {
+ 		struct drm_crtc_state *crtc_state =
+ 			drm_atomic_get_new_crtc_state(state, new_state->crtc);
+ 
+-		if (!drm_mode_equal(vec_mode->mode, &crtc_state->mode))
+-			return -EINVAL;
+-
+-		if (old_state->tv.mode != new_state->tv.mode)
+-			crtc_state->mode_changed = true;
++		crtc_state->mode_changed = true;
+ 	}
+ 
+ 	return 0;
+@@ -559,7 +552,10 @@ static void vc4_vec_encoder_enable(struc
+ 	VEC_WRITE(VEC_CLMP0_START, 0xac);
+ 	VEC_WRITE(VEC_CLMP0_END, 0xec);
+ 	VEC_WRITE(VEC_CONFIG2,
+-		  VEC_CONFIG2_UV_DIG_DIS | VEC_CONFIG2_RGB_DIG_DIS);
++		  VEC_CONFIG2_UV_DIG_DIS |
++		  VEC_CONFIG2_RGB_DIG_DIS |
++		  ((encoder->crtc->state->adjusted_mode.flags &
++		    DRM_MODE_FLAG_INTERLACE) ? 0 : VEC_CONFIG2_PROG_SCAN));
+ 	VEC_WRITE(VEC_CONFIG3, VEC_CONFIG3_HORIZ_LEN_STD);
+ 	VEC_WRITE(VEC_DAC_CONFIG, vec->variant->dac_config);
+ 
+@@ -582,17 +578,88 @@ static void vc4_vec_encoder_enable(struc
+ }
+ 
+ 
+-static bool vc4_vec_encoder_mode_fixup(struct drm_encoder *encoder,
+-				       const struct drm_display_mode *mode,
+-				       struct drm_display_mode *adjusted_mode)
++static int vc4_vec_encoder_atomic_check(struct drm_encoder *encoder,
++					struct drm_crtc_state *crtc_state,
++					struct drm_connector_state *conn_state)
+ {
+-	return true;
++	const struct drm_display_mode *reference_mode =
++		vc4_vec_tv_modes[conn_state->tv.mode].mode;
++
++	if (crtc_state->adjusted_mode.crtc_clock != reference_mode->clock ||
++	    crtc_state->adjusted_mode.crtc_htotal != reference_mode->htotal ||
++	    crtc_state->adjusted_mode.crtc_hdisplay % 4 != 0 ||
++	    crtc_state->adjusted_mode.crtc_hsync_end -
++		    crtc_state->adjusted_mode.crtc_hsync_start < 1)
++		return -EINVAL;
++
++	switch (reference_mode->vtotal) {
++	case 525:
++		if (crtc_state->adjusted_mode.crtc_vdisplay < 1 ||
++		    crtc_state->adjusted_mode.crtc_vdisplay > 253 ||
++		    crtc_state->adjusted_mode.crtc_vsync_start -
++			    crtc_state->adjusted_mode.crtc_vdisplay < 1 ||
++		    crtc_state->adjusted_mode.crtc_vsync_end -
++			    crtc_state->adjusted_mode.crtc_vsync_start != 3 ||
++		    crtc_state->adjusted_mode.crtc_vtotal -
++			    crtc_state->adjusted_mode.crtc_vsync_end < 4 ||
++		    crtc_state->adjusted_mode.crtc_vtotal > 262)
++			return -EINVAL;
++
++		if ((crtc_state->adjusted_mode.flags &
++		     DRM_MODE_FLAG_INTERLACE) &&
++		    (crtc_state->adjusted_mode.vdisplay % 2 != 0 ||
++		     crtc_state->adjusted_mode.vsync_start % 2 != 1 ||
++		     crtc_state->adjusted_mode.vsync_end % 2 != 1 ||
++		     crtc_state->adjusted_mode.vtotal % 2 != 1))
++			return -EINVAL;
++
++		/* progressive mode is hard-wired to 262 total lines */
++		if (!(crtc_state->adjusted_mode.flags &
++		      DRM_MODE_FLAG_INTERLACE) &&
++		    crtc_state->adjusted_mode.crtc_vtotal != 262)
++			return -EINVAL;
++
++		break;
++
++	case 625:
++		if (crtc_state->adjusted_mode.crtc_vdisplay < 1 ||
++		    crtc_state->adjusted_mode.crtc_vdisplay > 305 ||
++		    crtc_state->adjusted_mode.crtc_vsync_start -
++			    crtc_state->adjusted_mode.crtc_vdisplay < 1 ||
++		    crtc_state->adjusted_mode.crtc_vsync_end -
++			    crtc_state->adjusted_mode.crtc_vsync_start != 3 ||
++		    crtc_state->adjusted_mode.crtc_vtotal -
++			    crtc_state->adjusted_mode.crtc_vsync_end < 2 ||
++		    crtc_state->adjusted_mode.crtc_vtotal > 312)
++			return -EINVAL;
++
++		if ((crtc_state->adjusted_mode.flags &
++		     DRM_MODE_FLAG_INTERLACE) &&
++		    (crtc_state->adjusted_mode.vdisplay % 2 != 0 ||
++		     crtc_state->adjusted_mode.vsync_start % 2 != 0 ||
++		     crtc_state->adjusted_mode.vsync_end % 2 != 0 ||
++		     crtc_state->adjusted_mode.vtotal % 2 != 1))
++			return -EINVAL;
++
++		/* progressive mode is hard-wired to 312 total lines */
++		if (!(crtc_state->adjusted_mode.flags &
++		      DRM_MODE_FLAG_INTERLACE) &&
++		    crtc_state->adjusted_mode.crtc_vtotal != 312)
++			return -EINVAL;
++
++		break;
++
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
+ }
+ 
+ static const struct drm_encoder_helper_funcs vc4_vec_encoder_helper_funcs = {
+ 	.disable = vc4_vec_encoder_disable,
+ 	.enable = vc4_vec_encoder_enable,
+-	.mode_fixup = vc4_vec_encoder_mode_fixup,
++	.atomic_check = vc4_vec_encoder_atomic_check,
+ };
+ 
+ static const struct vc4_vec_variant bcm2835_vec_variant = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0556-drm-vc4-Make-VEC-progressive-modes-readily-accessibl.patch b/target/linux/bcm27xx/patches-5.15/950-0556-drm-vc4-Make-VEC-progressive-modes-readily-accessibl.patch
new file mode 100644
index 0000000000..cffd304353
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0556-drm-vc4-Make-VEC-progressive-modes-readily-accessibl.patch
@@ -0,0 +1,165 @@
+From 9f4f8d9e78dc7fbffba47dea9beb8cadd60fbc8c Mon Sep 17 00:00:00 2001
+From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+Date: Thu, 15 Jul 2021 01:08:11 +0200
+Subject: [PATCH] drm/vc4: Make VEC progressive modes readily
+ accessible
+
+Add predefined modelines for the 240p (NTSC) and 288p (PAL) progressive
+modes, and report them through vc4_vec_connector_get_modes().
+
+Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_vec.c | 73 ++++++++++++++++++++++++++---------
+ 1 file changed, 55 insertions(+), 18 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_vec.c
++++ b/drivers/gpu/drm/vc4/vc4_vec.c
+@@ -245,7 +245,8 @@ enum vc4_vec_tv_mode_id {
+ };
+ 
+ struct vc4_vec_tv_mode {
+-	const struct drm_display_mode *mode;
++	const struct drm_display_mode *interlaced_mode;
++	const struct drm_display_mode *progressive_mode;
+ 	u32 config0;
+ 	u32 config1;
+ 	u32 custom_freq;
+@@ -279,61 +280,81 @@ static const struct debugfs_reg32 vec_re
+ };
+ 
+ static const struct drm_display_mode drm_mode_480i = {
+-	DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 13500,
++	DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
+ 		 480, 480 + 7, 480 + 7 + 6, 525, 0,
+ 		 DRM_MODE_FLAG_INTERLACE)
+ };
+ 
++static const struct drm_display_mode drm_mode_240p = {
++	DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500,
++		 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
++		 240, 240 + 3, 240 + 3 + 3, 262, 0, 0)
++};
++
+ static const struct drm_display_mode drm_mode_576i = {
+-	DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 13500,
++	DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500,
+ 		 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
+ 		 576, 576 + 4, 576 + 4 + 6, 625, 0,
+ 		 DRM_MODE_FLAG_INTERLACE)
+ };
+ 
++static const struct drm_display_mode drm_mode_288p = {
++	DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500,
++		 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
++		 288, 288 + 2, 288 + 2 + 3, 312, 0, 0)
++};
++
+ static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = {
+ 	[VC4_VEC_TV_MODE_NTSC] = {
+-		.mode = &drm_mode_480i,
++		.interlaced_mode = &drm_mode_480i,
++		.progressive_mode = &drm_mode_240p,
+ 		.config0 = VEC_CONFIG0_NTSC_STD | VEC_CONFIG0_PDEN,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_NTSC_J] = {
+-		.mode = &drm_mode_480i,
++		.interlaced_mode = &drm_mode_480i,
++		.progressive_mode = &drm_mode_240p,
+ 		.config0 = VEC_CONFIG0_NTSC_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_NTSC_443] = {
+ 		/* NTSC with PAL chroma frequency */
+-		.mode = &drm_mode_480i,
++		.interlaced_mode = &drm_mode_480i,
++		.progressive_mode = &drm_mode_240p,
+ 		.config0 = VEC_CONFIG0_NTSC_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ,
+ 		.custom_freq = 0x2a098acb,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL] = {
+-		.mode = &drm_mode_576i,
++		.interlaced_mode = &drm_mode_576i,
++		.progressive_mode = &drm_mode_288p,
+ 		.config0 = VEC_CONFIG0_PAL_BDGHI_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL_M] = {
+-		.mode = &drm_mode_480i,
++		.interlaced_mode = &drm_mode_480i,
++		.progressive_mode = &drm_mode_240p,
+ 		.config0 = VEC_CONFIG0_PAL_M_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL_N] = {
+-		.mode = &drm_mode_576i,
++		.interlaced_mode = &drm_mode_576i,
++		.progressive_mode = &drm_mode_288p,
+ 		.config0 = VEC_CONFIG0_PAL_N_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 	},
+ 	[VC4_VEC_TV_MODE_PAL60] = {
+ 		/* PAL-M with chroma frequency of regular PAL */
+-		.mode = &drm_mode_480i,
++		.interlaced_mode = &drm_mode_480i,
++		.progressive_mode = &drm_mode_240p,
+ 		.config0 = VEC_CONFIG0_PAL_M_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ,
+ 		.custom_freq = 0x2a098acb,
+ 	},
+ 	[VC4_VEC_TV_MODE_SECAM] = {
+-		.mode = &drm_mode_576i,
++		.interlaced_mode = &drm_mode_576i,
++		.progressive_mode = &drm_mode_288p,
+ 		.config0 = VEC_CONFIG0_SECAM_STD,
+ 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
+ 		.custom_freq = 0x29c71c72,
+@@ -393,16 +414,32 @@ static void vc4_vec_connector_destroy(st
+ static int vc4_vec_connector_get_modes(struct drm_connector *connector)
+ {
+ 	struct drm_connector_state *state = connector->state;
+-	struct drm_display_mode *mode;
++	struct drm_display_mode *interlaced_mode, *progressive_mode;
+ 
+-	mode = drm_mode_duplicate(connector->dev,
+-				  vc4_vec_tv_modes[state->tv.mode].mode);
+-	if (!mode) {
++	interlaced_mode =
++		drm_mode_duplicate(connector->dev,
++				   vc4_vec_tv_modes[state->tv.mode].interlaced_mode);
++	progressive_mode =
++		drm_mode_duplicate(connector->dev,
++				   vc4_vec_tv_modes[state->tv.mode].progressive_mode);
++	if (!interlaced_mode || !progressive_mode) {
+ 		DRM_ERROR("Failed to create a new display mode\n");
++		drm_mode_destroy(connector->dev, interlaced_mode);
++		drm_mode_destroy(connector->dev, progressive_mode);
+ 		return -ENOMEM;
+ 	}
+ 
+-	drm_mode_probed_add(connector, mode);
++	if (connector->cmdline_mode.specified &&
++	    connector->cmdline_mode.refresh_specified &&
++	    !connector->cmdline_mode.interlace)
++		/* progressive mode set at boot, let's make it preferred */
++		progressive_mode->type |= DRM_MODE_TYPE_PREFERRED;
++	else
++		/* otherwise, interlaced mode is preferred */
++		interlaced_mode->type |= DRM_MODE_TYPE_PREFERRED;
++
++	drm_mode_probed_add(connector, interlaced_mode);
++	drm_mode_probed_add(connector, progressive_mode);
+ 
+ 	return 1;
+ }
+@@ -583,7 +620,7 @@ static int vc4_vec_encoder_atomic_check(
+ 					struct drm_connector_state *conn_state)
+ {
+ 	const struct drm_display_mode *reference_mode =
+-		vc4_vec_tv_modes[conn_state->tv.mode].mode;
++		vc4_vec_tv_modes[conn_state->tv.mode].interlaced_mode;
+ 
+ 	if (crtc_state->adjusted_mode.crtc_clock != reference_mode->clock ||
+ 	    crtc_state->adjusted_mode.crtc_htotal != reference_mode->htotal ||
diff --git a/target/linux/bcm27xx/patches-5.15/950-0557-bcm2835-v4l2-codec-Remove-advertised-support-of-VP8.patch b/target/linux/bcm27xx/patches-5.15/950-0557-bcm2835-v4l2-codec-Remove-advertised-support-of-VP8.patch
new file mode 100644
index 0000000000..9aa37a0e4d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0557-bcm2835-v4l2-codec-Remove-advertised-support-of-VP8.patch
@@ -0,0 +1,27 @@
+From e34d315278b4fcdf181fc7bc7406b7f59c70ba3f Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Sun, 31 Oct 2021 11:47:59 +0000
+Subject: [PATCH] bcm2835-v4l2-codec: Remove advertised support of VP8
+
+The support for this format by firmware is very limited
+and won't be faster than the arm.
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c | 5 -----
+ 1 file changed, 5 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -598,11 +598,6 @@ static const struct bcm2835_codec_fmt su
+ 		.flags			= V4L2_FMT_FLAG_COMPRESSED,
+ 		.mmal_fmt		= MMAL_ENCODING_MP2V,
+ 	}, {
+-		.fourcc			= V4L2_PIX_FMT_VP8,
+-		.depth			= 0,
+-		.flags			= V4L2_FMT_FLAG_COMPRESSED,
+-		.mmal_fmt		= MMAL_ENCODING_VP8,
+-	}, {
+ 		.fourcc			= V4L2_PIX_FMT_VC1_ANNEX_G,
+ 		.depth			= 0,
+ 		.flags			= V4L2_FMT_FLAG_COMPRESSED,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0558-ARM-dts-Rename-Zero-2-W-DT-files.patch b/target/linux/bcm27xx/patches-5.15/950-0558-ARM-dts-Rename-Zero-2-W-DT-files.patch
new file mode 100644
index 0000000000..8918967d01
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0558-ARM-dts-Rename-Zero-2-W-DT-files.patch
@@ -0,0 +1,387 @@
+From d29fb06a96cac4111d23e8f1cfc4d191d2fd5419 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 1 Nov 2021 15:44:31 +0000
+Subject: [PATCH] ARM: dts: Rename Zero 2 W DT files
+
+Retain the old names for backwards compatibility for a while, while the
+necessary firmware change rolls out.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/Makefile                 |   1 +
+ arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts | 177 ++++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-zero-2.dts   | 178 +--------------------
+ 3 files changed, 179 insertions(+), 177 deletions(-)
+ create mode 100644 arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
+ 	bcm2708-rpi-zero.dtb \
+ 	bcm2708-rpi-zero-w.dtb \
+ 	bcm2710-rpi-zero-2.dtb \
++	bcm2710-rpi-zero-2-w.dtb \
+ 	bcm2709-rpi-2-b.dtb \
+ 	bcm2710-rpi-2-b.dtb \
+ 	bcm2710-rpi-3-b.dtb \
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+@@ -0,0 +1,177 @@
++/dts-v1/;
++
++#include "bcm2710.dtsi"
++#include "bcm2709-rpi.dtsi"
++#include "bcm283x-rpi-csi1-2lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm2708-rpi-bt.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	compatible = "raspberrypi,model-zero-2-w", "brcm,bcm2837";
++	model = "Raspberry Pi Zero 2 W";
++
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart1;
++		serial1 = &uart0;
++		mmc1 = &mmcnr;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <1>; /* output */
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <4>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <4>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <4>; /* alt0 */
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <7>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	bt_pins: bt_pins {
++		brcm,pins = <43>;
++		brcm,function = <4>; /* alt0:GPCLK2 */
++		brcm,pull = <0>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins = <30 31 32 33>;
++		brcm,function = <7>; /* alt3=UART0 */
++		brcm,pull = <2 0 0 2>; /* up none none up */
++	};
++
++	uart1_pins: uart1_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	audio_pins: audio_pins {
++		brcm,pins = <>;
++		brcm,function = <>;
++	};
++};
++
++&mmcnr {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdio_pins>;
++	bus-width = <4>;
++	status = "okay";
++};
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_pins &bt_pins>;
++	status = "okay";
++};
++
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_pins>;
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2c2 {
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "actpwr";
++		gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++	brcm,disable-headphones = <1>;
++};
++
++&bt {
++	shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++};
++
++&minibt {
++	shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
++};
++
++&cam1_reg {
++	gpio = <&gpio 40 GPIO_ACTIVE_HIGH>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++	};
++};
+--- a/arch/arm/boot/dts/bcm2710-rpi-zero-2.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2.dts
+@@ -1,177 +1 @@
+-/dts-v1/;
+-
+-#include "bcm2710.dtsi"
+-#include "bcm2709-rpi.dtsi"
+-#include "bcm283x-rpi-csi1-2lane.dtsi"
+-#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+-#include "bcm2708-rpi-bt.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+-
+-/ {
+-	compatible = "raspberrypi,model-zero-2", "brcm,bcm2837";
+-	model = "Raspberry Pi Zero 2";
+-
+-	chosen {
+-		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
+-	};
+-
+-	aliases {
+-		serial0 = &uart1;
+-		serial1 = &uart0;
+-		mmc1 = &mmcnr;
+-	};
+-};
+-
+-&gpio {
+-	spi0_pins: spi0_pins {
+-		brcm,pins = <9 10 11>;
+-		brcm,function = <4>; /* alt0 */
+-	};
+-
+-	spi0_cs_pins: spi0_cs_pins {
+-		brcm,pins = <8 7>;
+-		brcm,function = <1>; /* output */
+-	};
+-
+-	i2c0_pins: i2c0 {
+-		brcm,pins = <0 1>;
+-		brcm,function = <4>;
+-	};
+-
+-	i2c1_pins: i2c1 {
+-		brcm,pins = <2 3>;
+-		brcm,function = <4>;
+-	};
+-
+-	i2s_pins: i2s {
+-		brcm,pins = <18 19 20 21>;
+-		brcm,function = <4>; /* alt0 */
+-	};
+-
+-	sdio_pins: sdio_pins {
+-		brcm,pins =     <34 35 36 37 38 39>;
+-		brcm,function = <7>; // alt3 = SD1
+-		brcm,pull =     <0 2 2 2 2 2>;
+-	};
+-
+-	bt_pins: bt_pins {
+-		brcm,pins = <43>;
+-		brcm,function = <4>; /* alt0:GPCLK2 */
+-		brcm,pull = <0>;
+-	};
+-
+-	uart0_pins: uart0_pins {
+-		brcm,pins = <30 31 32 33>;
+-		brcm,function = <7>; /* alt3=UART0 */
+-		brcm,pull = <2 0 0 2>; /* up none none up */
+-	};
+-
+-	uart1_pins: uart1_pins {
+-		brcm,pins;
+-		brcm,function;
+-		brcm,pull;
+-	};
+-
+-	audio_pins: audio_pins {
+-		brcm,pins = <>;
+-		brcm,function = <>;
+-	};
+-};
+-
+-&mmcnr {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&sdio_pins>;
+-	bus-width = <4>;
+-	status = "okay";
+-};
+-
+-&uart0 {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&uart0_pins &bt_pins>;
+-	status = "okay";
+-};
+-
+-&uart1 {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&uart1_pins>;
+-	status = "okay";
+-};
+-
+-&spi0 {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+-	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+-
+-	spidev0: spidev@0{
+-		compatible = "spidev";
+-		reg = <0>;	/* CE0 */
+-		#address-cells = <1>;
+-		#size-cells = <0>;
+-		spi-max-frequency = <125000000>;
+-	};
+-
+-	spidev1: spidev@1{
+-		compatible = "spidev";
+-		reg = <1>;	/* CE1 */
+-		#address-cells = <1>;
+-		#size-cells = <0>;
+-		spi-max-frequency = <125000000>;
+-	};
+-};
+-
+-&i2c0if {
+-	clock-frequency = <100000>;
+-};
+-
+-&i2c1 {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&i2c1_pins>;
+-	clock-frequency = <100000>;
+-};
+-
+-&i2c2 {
+-	clock-frequency = <100000>;
+-};
+-
+-&i2s {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&i2s_pins>;
+-};
+-
+-&leds {
+-	act_led: led-act {
+-		label = "led0";
+-		linux,default-trigger = "actpwr";
+-		gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
+-	};
+-};
+-
+-&hdmi {
+-	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
+-};
+-
+-&audio {
+-	pinctrl-names = "default";
+-	pinctrl-0 = <&audio_pins>;
+-	brcm,disable-headphones = <1>;
+-};
+-
+-&bt {
+-	shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+-};
+-
+-&minibt {
+-	shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+-};
+-
+-&cam1_reg {
+-	gpio = <&gpio 40 GPIO_ACTIVE_HIGH>;
+-};
+-
+-/ {
+-	__overrides__ {
+-		act_led_gpio = <&act_led>,"gpios:4";
+-		act_led_activelow = <&act_led>,"gpios:8";
+-		act_led_trigger = <&act_led>,"linux,default-trigger";
+-	};
+-};
++#include "bcm2710-rpi-zero-2-w.dts"
diff --git a/target/linux/bcm27xx/patches-5.15/950-0559-dtoverlays-Update-all-image-sensor-overlays-for-Medi.patch b/target/linux/bcm27xx/patches-5.15/950-0559-dtoverlays-Update-all-image-sensor-overlays-for-Medi.patch
new file mode 100644
index 0000000000..4dcbd7fb5d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0559-dtoverlays-Update-all-image-sensor-overlays-for-Medi.patch
@@ -0,0 +1,337 @@
+From 74b6a90ba073ae853640432f824b6308c5a003b5 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 21 Oct 2021 15:06:02 +0100
+Subject: [PATCH] dtoverlays: Update all image sensor overlays for
+ Media Controller option
+
+Add an option to enable configuration via the Media Controller API
+(rather than the video-node-centric /dev/videoN) as about to
+be used by libcamera as it enables more complex pipelines to be
+handled.
+
+Any source that has a libcamera tuning merged has MC enabled by
+default.
+Sources with no libcamera tuning merged have it disabled by
+default.
+In either case it can be overridden with the overlay parameter
+"media-controller".
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             | 27 +++++++++++++++++--
+ .../boot/dts/overlays/adv7282m-overlay.dts    |  8 ++++++
+ arch/arm/boot/dts/overlays/imx219-overlay.dts |  8 ++++++
+ .../boot/dts/overlays/imx290_327-overlay.dtsi |  8 ++++++
+ .../boot/dts/overlays/imx477_378-overlay.dtsi |  8 ++++++
+ arch/arm/boot/dts/overlays/imx519-overlay.dts |  8 ++++++
+ .../arm/boot/dts/overlays/irs1125-overlay.dts | 11 ++++++++
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts |  8 ++++++
+ arch/arm/boot/dts/overlays/ov7251-overlay.dts |  8 ++++++
+ arch/arm/boot/dts/overlays/ov9281-overlay.dts |  8 ++++++
+ .../boot/dts/overlays/tc358743-overlay.dts    |  8 ++++++
+ 11 files changed, 108 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -416,6 +416,8 @@ Info:   Analog Devices ADV7282M analogue
+         variants.
+ Load:   dtoverlay=adv7282m,<param>=<val>
+ Params: addr                    Overrides the I2C address (default 0x21)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default off)
+ 
+ 
+ Name:   adv728x-m
+@@ -426,6 +428,8 @@ Params: addr                    Override
+         adv7280m                Select ADV7280-M.
+         adv7281m                Select ADV7281-M.
+         adv7281ma               Select ADV7281-MA.
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default off)
+ 
+ 
+ Name:   akkordion-iqdacplus
+@@ -1708,6 +1712,8 @@ Params: rotation                Mounting
+                                 180, default 180)
+         orientation             Sensor orientation (0 = front, 1 = rear,
+                                 2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
+ 
+ 
+ Name:   imx290
+@@ -1728,6 +1734,8 @@ Params: 4lane                   Enable 4
+                                 2 = external, default external)
+         rotation                Mounting rotation of the camera sensor (0 or
+                                 180, default 0)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
+ 
+ 
+ Name:   imx378
+@@ -1739,6 +1747,8 @@ Params: rotation                Mounting
+                                 180, default 180)
+         orientation             Sensor orientation (0 = front, 1 = rear,
+                                 2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
+ 
+ 
+ Name:   imx477
+@@ -1750,6 +1760,8 @@ Params: rotation                Mounting
+                                 180, default 180)
+         orientation             Sensor orientation (0 = front, 1 = rear,
+                                 2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
+ 
+ 
+ Name:   imx519
+@@ -1761,6 +1773,8 @@ Params: rotation                Mounting
+                                 180, default 0)
+         orientation             Sensor orientation (0 = front, 1 = rear,
+                                 2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
+ 
+ 
+ Name:   iqaudio-codec
+@@ -1824,8 +1838,9 @@ Name:   irs1125
+ Info:   Infineon irs1125 TOF camera module.
+         Uses Unicam 1, which is the standard camera connector on most Pi
+         variants.
+-Load:   dtoverlay=irs1125
+-Params: <None>
++Load:   dtoverlay=irs1125,<param>=<val>
++Params: media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default off)
+ 
+ 
+ Name:   jedec-spi-nor
+@@ -2237,6 +2252,8 @@ Params: rotation                Mounting
+                                 180, default 0)
+         orientation             Sensor orientation (0 = front, 1 = rear,
+                                 2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
+ 
+ 
+ Name:   ov7251
+@@ -2248,6 +2265,8 @@ Params: rotation                Mounting
+                                 180, default 0)
+         orientation             Sensor orientation (0 = front, 1 = rear,
+                                 2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default off)
+ 
+ 
+ Name:   ov9281
+@@ -2259,6 +2278,8 @@ Params: rotation                Mounting
+                                 180, default 0)
+         orientation             Sensor orientation (0 = front, 1 = rear,
+                                 2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
+ 
+ 
+ Name:   papirus
+@@ -3239,6 +3260,8 @@ Params: 4lane                   Use 4 la
+         link-frequency          Set the link frequency. Only values of 297000000
+                                 (574Mbit/s) and 486000000 (972Mbit/s - default)
+                                 are supported by the driver.
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default off)
+ 
+ 
+ Name:   tc358743-audio
+--- a/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
++++ b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
+@@ -59,7 +59,15 @@
+ 		};
+ 	};
+ 
++	fragment@4 {
++		target = <&csi1>;
++		__dormant__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		addr =			<&adv728x>,"reg:0";
++		media-controller = <0>,"=4";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx219-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+@@ -108,8 +108,16 @@
+ 		};
+ 	};
+ 
++	fragment@6 {
++		target = <&csi1>;
++		__overlay__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		rotation = <&imx219>,"rotation:0";
+ 		orientation = <&imx219>,"orientation:0";
++		media-controller = <0>,"=6";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
++++ b/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
+@@ -134,11 +134,19 @@
+ 		};
+ 	};
+ 
++	fragment@10 {
++		target = <&csi1>;
++		__overlay__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		4lane = <0>, "-6+7-8+9";
+ 		clock-frequency = <&imx290_clk>,"clock-frequency:0",
+ 				  <&imx290>,"clock-frequency:0";
+ 		rotation = <&imx290>,"rotation:0";
+ 		orientation = <&imx290>,"orientation:0";
++		media-controller = <0>,"=10";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
++++ b/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
+@@ -103,8 +103,16 @@
+ 		};
+ 	};
+ 
++	fragment@6 {
++		target = <&csi1>;
++		__overlay__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		rotation = <&imx477>,"rotation:0";
+ 		orientation = <&imx477>,"orientation:0";
++		media-controller = <0>,"=6";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx519-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx519-overlay.dts
+@@ -108,8 +108,16 @@
+ 		};
+ 	};
+ 
++	fragment@6 {
++		target = <&csi1>;
++		__overlay__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		rotation = <&imx519>,"rotation:0";
+ 		orientation = <&imx519>,"orientation:0";
++		media-controller = <0>,"=6";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/irs1125-overlay.dts
++++ b/arch/arm/boot/dts/overlays/irs1125-overlay.dts
+@@ -82,4 +82,15 @@
+ 			};
+ 		};
+ 	};
++
++	fragment@6 {
++		target = <&csi1>;
++		__dormant__ {
++			brcm,media-controller;
++		};
++	};
++
++	__overrides__ {
++		media-controller = <0>,"=6";
++	};
+ };
+--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -87,8 +87,16 @@
+ 		};
+ 	};
+ 
++	fragment@6 {
++		target = <&csi1>;
++		__overlay__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		rotation = <&ov5647>,"rotation:0";
+ 		orientation = <&ov5647>,"orientation:0";
++		media-controller = <0>,"=6";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/ov7251-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+@@ -106,8 +106,16 @@
+ 		};
+ 	};
+ 
++	fragment@6 {
++		target = <&csi1>;
++		__dormant__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		rotation = <&ov7251>,"rotation:0";
+ 		orientation = <&ov7251>,"orientation:0";
++		media-controller = <0>,"=6";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/ov9281-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
+@@ -106,8 +106,16 @@
+ 		};
+ 	};
+ 
++	fragment@6 {
++		target = <&csi1>;
++		__overlay__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		rotation = <&ov9281>,"rotation:0";
+ 		orientation = <&ov9281>,"orientation:0";
++		media-controller = <0>,"=6";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts
++++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
+@@ -100,8 +100,16 @@
+ 		};
+ 	};
+ 
++	fragment@9 {
++		target = <&csi1>;
++		__dormant__ {
++			brcm,media-controller;
++		};
++	};
++
+ 	__overrides__ {
+ 		4lane = <0>, "-2+3-7+8";
+ 		link-frequency = <&tc358743>,"link-frequencies#0";
++		media-controller = <0>,"=9";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0560-ARM-dt-Add-DT-nodes-for-the-WLAN-interfaces.patch b/target/linux/bcm27xx/patches-5.15/950-0560-ARM-dt-Add-DT-nodes-for-the-WLAN-interfaces.patch
new file mode 100644
index 0000000000..aced47cab2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0560-ARM-dt-Add-DT-nodes-for-the-WLAN-interfaces.patch
@@ -0,0 +1,79 @@
+From 5676ad01fda218675624294b2818720ea806bf87 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 26 Oct 2021 16:38:44 +0100
+Subject: [PATCH] ARM: dt: Add DT nodes for the WLAN interfaces
+
+Mirror upstream changes into the downstream dts files.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2708-rpi-zero-w.dts   | 7 +++++++
+ arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts | 7 +++++++
+ arch/arm/boot/dts/bcm2710-rpi-3-b.dts      | 7 +++++++
+ arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts | 7 +++++++
+ 4 files changed, 28 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
+@@ -83,6 +83,13 @@
+ 	pinctrl-0 = <&sdio_pins>;
+ 	bus-width = <4>;
+ 	status = "okay";
++	#address-cells = <1>;
++	#size-cells = <0>;
++
++	brcmf: wifi@1 {
++		reg = <1>;
++		compatible = "brcm,bcm4329-fmac";
++	};
+ };
+ 
+ &uart0 {
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
+@@ -84,6 +84,13 @@
+ 	pinctrl-0 = <&sdio_pins>;
+ 	bus-width = <4>;
+ 	status = "okay";
++	#address-cells = <1>;
++	#size-cells = <0>;
++
++	brcmf: wifi@1 {
++		reg = <1>;
++		compatible = "brcm,bcm4329-fmac";
++	};
+ };
+ 
+ &firmware {
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+@@ -84,6 +84,13 @@
+ 	pinctrl-0 = <&sdio_pins>;
+ 	bus-width = <4>;
+ 	status = "okay";
++	#address-cells = <1>;
++	#size-cells = <0>;
++
++	brcmf: wifi@1 {
++		reg = <1>;
++		compatible = "brcm,bcm4329-fmac";
++	};
+ };
+ 
+ &soc {
+--- a/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+@@ -83,6 +83,13 @@
+ 	pinctrl-0 = <&sdio_pins>;
+ 	bus-width = <4>;
+ 	status = "okay";
++	#address-cells = <1>;
++	#size-cells = <0>;
++
++	brcmf: wifi@1 {
++		reg = <1>;
++		compatible = "brcm,bcm4329-fmac";
++	};
+ };
+ 
+ &uart0 {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0561-ARM-dts-Provide-WLAN-firmware-names-for-Zero-2-W.patch b/target/linux/bcm27xx/patches-5.15/950-0561-ARM-dts-Provide-WLAN-firmware-names-for-Zero-2-W.patch
new file mode 100644
index 0000000000..23c8f5964a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0561-ARM-dts-Provide-WLAN-firmware-names-for-Zero-2-W.patch
@@ -0,0 +1,40 @@
+From ef292559833a279be2aac7ae8222348b1c122826 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 28 Oct 2021 15:09:25 +0100
+Subject: [PATCH] ARM: dts: Provide WLAN firmware names for Zero 2 W
+
+BCM43430/2 may be BCM43430B0 or BCM43436P, and BCM43430/1 can be either
+BCM43430A1 or BCM43436S, the former being upstream names and the
+latter downstream names for differently-sourced sister parts.
+
+Make the choice of firmwares board-specific (without making the actual
+firmwares board-specific) by placing the alternative firmware names for
+each part in the DT node.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+@@ -89,6 +89,19 @@
+ 	brcmf: wifi@1 {
+ 		reg = <1>;
+ 		compatible = "brcm,bcm4329-fmac";
++
++		firmwares {
++			fw_43436p {
++				chipid = <43430>;
++				revmask = <4>;
++				fw_base = "brcm/brcmfmac43436-sdio";
++			};
++			fw_43436s {
++				chipid = <43430>;
++				revmask = <2>;
++				fw_base = "brcm/brcmfmac43436s-sdio";
++			};
++		};
+ 	};
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0562-drm-Check-whether-the-gamma-lut-has-changed-before-u.patch b/target/linux/bcm27xx/patches-5.15/950-0562-drm-Check-whether-the-gamma-lut-has-changed-before-u.patch
new file mode 100644
index 0000000000..22ef7b6143
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0562-drm-Check-whether-the-gamma-lut-has-changed-before-u.patch
@@ -0,0 +1,33 @@
+From 190eaf4f8d95196b1b66c7c356d28643a6355039 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 2 Nov 2021 16:01:36 +0000
+Subject: [PATCH] drm: Check whether the gamma lut has changed before
+ updating
+
+drm_crtc_legacy_gamma_set updates the gamma_lut blob unconditionally,
+which leads to unnecessary reprogramming of hardware.
+
+Check whether the blob contents has actually changed before
+signalling that it has been updated.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/drm_color_mgmt.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/drm_color_mgmt.c
++++ b/drivers/gpu/drm/drm_color_mgmt.c
+@@ -326,8 +326,12 @@ static int drm_crtc_legacy_gamma_set(str
+ 	replaced = drm_property_replace_blob(&crtc_state->degamma_lut,
+ 					     use_gamma_lut ? NULL : blob);
+ 	replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL);
+-	replaced |= drm_property_replace_blob(&crtc_state->gamma_lut,
++	if (!crtc_state->gamma_lut || !crtc_state->gamma_lut->data ||
++	    memcmp(crtc_state->gamma_lut->data, blob_data, blob->length))
++		replaced |= drm_property_replace_blob(&crtc_state->gamma_lut,
+ 					      use_gamma_lut ? blob : NULL);
++	else
++		drm_property_blob_put(blob);
+ 	crtc_state->color_mgmt_changed |= replaced;
+ 
+ 	ret = drm_atomic_commit(state);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0563-drm-vc4-kms-Fix-return-code-check.patch b/target/linux/bcm27xx/patches-5.15/950-0563-drm-vc4-kms-Fix-return-code-check.patch
new file mode 100644
index 0000000000..2bff88c517
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0563-drm-vc4-kms-Fix-return-code-check.patch
@@ -0,0 +1,42 @@
+From e0788eaab7b0dca567c52a5959fbdd9da942a1f5 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 20 Oct 2021 13:31:22 +0200
+Subject: [PATCH] drm/vc4: kms: Fix return code check
+
+The HVS global state functions return an error pointer, but in most
+cases we check if it's NULL, possibly resulting in an invalid pointer
+dereference.
+
+Fixes: 9ec03d7f1ed3 ("drm/vc4: kms: Wait on previous FIFO users before a commit")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -352,11 +352,11 @@ static void vc4_atomic_commit_tail(struc
+ 	int i;
+ 
+ 	old_hvs_state = vc4_hvs_get_old_global_state(state);
+-	if (WARN_ON(!old_hvs_state))
++	if (WARN_ON(IS_ERR(old_hvs_state)))
+ 		return;
+ 
+ 	new_hvs_state = vc4_hvs_get_new_global_state(state);
+-	if (WARN_ON(!new_hvs_state))
++	if (WARN_ON(IS_ERR(new_hvs_state)))
+ 		return;
+ 
+ 	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
+@@ -891,8 +891,8 @@ vc4_core_clock_atomic_check(struct drm_a
+ 	load_state = to_vc4_load_tracker_state(priv_state);
+ 
+ 	hvs_new_state = vc4_hvs_get_global_state(state);
+-	if (!hvs_new_state)
+-		return -EINVAL;
++	if (IS_ERR(hvs_new_state))
++		return PTR_ERR(hvs_new_state);
+ 
+ 	for_each_oldnew_crtc_in_state(state, crtc,
+ 				      old_crtc_state,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0564-drm-vc4-kms-Move-clock-request-to-our-HVS-state.patch b/target/linux/bcm27xx/patches-5.15/950-0564-drm-vc4-kms-Move-clock-request-to-our-HVS-state.patch
new file mode 100644
index 0000000000..6ffe0f1e41
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0564-drm-vc4-kms-Move-clock-request-to-our-HVS-state.patch
@@ -0,0 +1,59 @@
+From f7d98ba8c30bbc5b29bf740f28bf2daeeec09d2b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 4 Nov 2021 14:04:37 +0100
+Subject: [PATCH] drm/vc4: kms: Move clock request to our HVS state
+
+Our current clock request has been stored so far on the main HVS
+structure, but even though we shouldn't have two commits in parallel and
+it shouldn't cause any functional change, the request itself is linked
+to a given HVS state.
+
+Move the request there to make a bit more sense.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_drv.h | 1 -
+ drivers/gpu/drm/vc4/vc4_kms.c | 8 +++++---
+ 2 files changed, 5 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -326,7 +326,6 @@ struct vc4_hvs {
+ 	u32 __iomem *dlist;
+ 
+ 	struct clk *core_clk;
+-	struct clk_request *core_req;
+ 
+ 	/* Memory manager for CRTCs to allocate space in the display
+ 	 * list.  Units are dwords.
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -40,6 +40,7 @@ static struct vc4_ctm_state *to_vc4_ctm_
+ struct vc4_hvs_state {
+ 	struct drm_private_state base;
+ 	unsigned long core_clock_rate;
++	struct clk_request *core_req;
+ 
+ 	struct {
+ 		unsigned in_use: 1;
+@@ -398,7 +399,8 @@ static void vc4_atomic_commit_tail(struc
+ 		 * And remove the previous one based on the HVS
+ 		 * requirements if any.
+ 		 */
+-               clk_request_done(hvs->core_req);
++		clk_request_done(old_hvs_state->core_req);
++		old_hvs_state->core_req = NULL;
+ 	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+@@ -432,8 +434,8 @@ static void vc4_atomic_commit_tail(struc
+ 		 * Request a clock rate based on the current HVS
+ 		 * requirements.
+ 		 */
+-		hvs->core_req = clk_request_start(hvs->core_clk,
+-						  new_hvs_state->core_clock_rate);
++		new_hvs_state->core_req = clk_request_start(hvs->core_clk,
++							    new_hvs_state->core_clock_rate);
+ 
+ 		/* And drop the temporary request */
+ 		clk_request_done(core_req);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0565-overlays-Add-fbtft-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0565-overlays-Add-fbtft-overlay.patch
new file mode 100644
index 0000000000..e9e0353644
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0565-overlays-Add-fbtft-overlay.patch
@@ -0,0 +1,775 @@
+From c218d35ede9474ffa6231e8be88c8ad28044ca2e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Wed, 3 Nov 2021 12:21:14 +0100
+Subject: [PATCH] overlays: Add fbtft overlay
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add an overlay that provides much of the functionality that fbtft_device did.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ arch/arm/boot/dts/overlays/Makefile          |   1 +
+ arch/arm/boot/dts/overlays/README            | 124 ++++
+ arch/arm/boot/dts/overlays/fbtft-overlay.dts | 611 +++++++++++++++++++
+ 3 files changed, 736 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/fbtft-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -49,6 +49,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	enc28j60.dtbo \
+ 	enc28j60-spi2.dtbo \
+ 	exc3000.dtbo \
++	fbtft.dtbo \
+ 	fe-pi-audio.dtbo \
+ 	fsm-demo.dtbo \
+ 	ghost-amp.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -857,6 +857,130 @@ Params: interrupt               GPIO use
+         swapxy                  Touchscreen swapped x y axis
+ 
+ 
++Name:   fbtft
++Info:   Overlay for SPI-connected displays using the fbtft drivers.
++
++        This overlay seeks to replace the functionality provided by fbtft_device
++        which is now gone from the kernel.
++
++        Most displays from fbtft_device have been ported over.
++        Example:
++          dtoverlay=fbtft,spi0-0,rpi-display,reset_pin=23,dc_pin=24,led_pin=18,rotate=270
++
++        It is also possible to specify the controller (this will use the default
++        init sequence in the driver).
++        Example:
++          dtoverlay=fbtft,spi0-0,ili9341,bgr,reset_pin=23,dc_pin=24,led_pin=18,rotate=270
++
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++
++        The following features of fbtft_device have not been ported over:
++        - parallel bus is not supported
++        - the init property which overrides the controller initialization
++          sequence is not supported as a parameter due to memory limitations in
++          the bootloader responsible for applying the overlay.
++
++        See https://github.com/notro/fbtft/wiki/FBTFT-RPI-overlays for how to
++        create an overlay.
++
++Load:   dtoverlay=fbtft,<param>=<val>
++Params:
++        spi<n>-<m>              Configure device at spi<n>, cs<m>
++                                (boolean, required)
++        speed                   SPI bus speed in Hz (default 32000000)
++        cpha                    Shifted clock phase (CPHA) mode
++        cpol                    Inverse clock polarity (CPOL) mode
++
++        adafruit18              Adafruit 1.8
++        adafruit22              Adafruit 2.2 (old)
++        adafruit22a             Adafruit 2.2
++        adafruit28              Adafruit 2.8
++        adafruit13m             Adafruit 1.3 OLED
++        admatec_c-berry28       C-Berry28
++        dogs102                 EA DOGS102
++        er_tftm050_2            ER-TFTM070-2
++        er_tftm070_5            ER-TFTM070-5
++        ew24ha0                 EW24HA0
++        ew24ha0_9bit            EW24HA0 in 9-bit mode
++        freetronicsoled128      Freetronics OLED128
++        hy28a                   HY28A
++        hy28b                   HY28B
++        itdb28_spi              ITDB02-2.8 with SPI interface circuit
++        mi0283qt-2              Watterott MI0283QT-2
++        mi0283qt-9a             Watterott MI0283QT-9A
++        nokia3310               Nokia 3310
++        nokia3310a              Nokia 3310a
++        nokia5110               Nokia 5110
++        piscreen                PiScreen
++        pitft                   Adafruit PiTFT 2.8
++        pioled                  ILSoft OLED
++        rpi-display             Watterott rpi-display
++        sainsmart18             Sainsmart 1.8
++        sainsmart32_spi         Sainsmart 3.2 with SPI interfce circuit
++        tinylcd35               TinyLCD 3.5
++        tm022hdh26              Tianma TM022HDH26
++        tontec35_9481           Tontect 3.5 with ILI9481 controller
++        tontec35_9486           Tontect 3.5 with ILI9486 controller
++        waveshare32b            Waveshare 3.2
++        waveshare22             Waveshare 2.2
++
++        bd663474                BD663474 display controller
++        hx8340bn                HX8340BN display controller
++        hx8347d                 HX8347D display controller
++        hx8353d                 HX8353D display controller
++        hx8357d                 HX8357D display controller
++        ili9163                 ILI9163 display controller
++        ili9320                 ILI9320 display controller
++        ili9325                 ILI9325 display controller
++        ili9340                 ILI9340 display controller
++        ili9341                 ILI9341 display controller
++        ili9481                 ILI9481 display controller
++        ili9486                 ILI9486 display controller
++        pcd8544                 PCD8544 display controller
++        ra8875                  RA8875 display controller
++        s6d02a1                 S6D02A1 display controller
++        s6d1121                 S6D1121 display controller
++        seps525                 SEPS525 display controller
++        sh1106                  SH1106 display controller
++        ssd1289                 SSD1289 display controller
++        ssd1305                 SSD1305 display controller
++        ssd1306                 SSD1306 display controller
++        ssd1325                 SSD1325 display controller
++        ssd1331                 SSD1331 display controller
++        ssd1351                 SSD1351 display controller
++        st7735r                 ST7735R display controller
++        st7789v                 ST7789V display controller
++        tls8204                 TLS8204 display controller
++        uc1611                  UC1611 display controller
++        uc1701                  UC1701 display controller
++        upd161704               UPD161704 display controller
++
++        width                   Display width in pixels
++        height                  Display height in pixels
++        regwidth                Display controller register width (default is
++                                driver specific)
++        buswidth                Display bus interface width (default 8)
++        debug                   Debug output level {0-7}
++        rotate                  Display rotation {0, 90, 180, 270} (counter
++                                clockwise). Not supported by all drivers.
++        bgr                     Enable BGR mode (default off). Use if Red and
++                                Blue are swapped. Not supported by all drivers.
++        fps                     Frames per second (default 30). In effect this
++                                states how long the driver will wait after video
++                                memory has been changed until display update
++                                transfer is started.
++        txbuflen                Length of the FBTFT transmit buffer
++                                (default 4096)
++        startbyte               Sets the Start byte used by fb_ili9320,
++                                fb_ili9325 and fb_hx8347d. Common value is 0x70.
++        gamma                   String representation of Gamma Curve(s). Driver
++                                specific. Not supported by all drivers.
++        reset_pin               GPIO pin for RESET
++        dc_pin                  GPIO pin for D/C
++        led_pin                 GPIO pin for LED backlight
++
++
+ Name:   fe-pi-audio
+ Info:   Configures the Fe-Pi Audio Sound Card
+ Load:   dtoverlay=fe-pi-audio
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/fbtft-overlay.dts
+@@ -0,0 +1,611 @@
++/*
++ * Device Tree overlay for fbtft drivers
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	/* adafruit18 */
++	fragment@0 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "sitronix,st7735r";
++			spi-max-frequency = <32000000>;
++			gamma = "02 1c 07 12 37 32 29 2d 29 25 2B 39 00 01 03 10\n03 1d 07 06 2E 2C 29 2D 2E 2E 37 3F 00 00 02 10";
++		};
++	};
++
++	/* adafruit22 */
++	fragment@1 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "himax,hx8340bn";
++			spi-max-frequency = <32000000>;
++			buswidth = <9>;
++			bgr;
++		};
++	};
++
++	/* adafruit22a */
++	fragment@2 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9340";
++			spi-max-frequency = <32000000>;
++			bgr;
++		};
++	};
++
++	/* adafruit28 */
++	fragment@3 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9341";
++			spi-max-frequency = <32000000>;
++			bgr;
++		};
++	};
++
++	/* adafruit13m */
++	fragment@4 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "solomon,ssd1306";
++			spi-max-frequency = <16000000>;
++		};
++	};
++
++	/* admatec_c-berry28 */
++	fragment@5 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "sitronix,st7789v";
++			spi-max-frequency = <48000000>;
++			init = <0x01000011
++				0x02000078
++				0x0100003A 0x05
++				0x010000B2 0x0C 0x0C 0x00 0x33 0x33
++				0x010000B7 0x35
++				0x010000C2 0x01 0xFF
++				0x010000C3 0x17
++				0x010000C4 0x20
++				0x010000BB 0x17
++				0x010000C5 0x20
++				0x010000D0 0xA4 0xA1
++				0x01000029>;
++			gamma = "D0 00 14 15 13 2C 42 43 4E 09 16 14 18 21\nD0 00 14 15 13 0B 43 55 53 0C 17 14 23 20";
++		};
++	};
++
++	/* dogs102 */
++	fragment@6 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "UltraChip,uc1701";
++			spi-max-frequency = <8000000>;
++			bgr;
++		};
++	};
++
++	/* er_tftm050_2 */
++	fragment@7 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "raio,ra8875";
++			spi-max-frequency = <5000000>;
++			spi-cpha;
++			spi-cpol;
++			width = <480>;
++			height = <272>;
++			bgr;
++		};
++	};
++
++	/* er_tftm070_5 */
++	fragment@8 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "raio,ra8875";
++			spi-max-frequency = <5000000>;
++			spi-cpha;
++			spi-cpol;
++			width = <800>;
++			height = <480>;
++			bgr;
++		};
++	};
++
++	/* ew24ha0 */
++	fragment@9 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ultrachip,uc1611";
++			spi-max-frequency = <32000000>;
++			spi-cpha;
++			spi-cpol;
++		};
++	};
++
++	/* ew24ha0_9bit */
++	fragment@10 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ultrachip,uc1611";
++			spi-max-frequency = <32000000>;
++			spi-cpha;
++			spi-cpol;
++			buswidth = <9>;
++		};
++	};
++
++	/* freetronicsoled128 */
++	fragment@11 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "solomon,ssd1351";
++			spi-max-frequency = <20000000>;
++			backlight = <2>; /* FBTFT_ONBOARD_BACKLIGHT */
++			bgr;
++		};
++	};
++
++	/* hy28a */
++	fragment@12 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9320";
++			spi-max-frequency = <32000000>;
++			spi-cpha;
++			spi-cpol;
++			startbyte = <0x70>;
++			bgr;
++		};
++	};
++
++	/* hy28b */
++	fragment@13 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9325";
++			spi-max-frequency = <48000000>;
++			spi-cpha;
++			spi-cpol;
++			init = <0x010000e7 0x0010
++				0x01000000 0x0001
++				0x01000001 0x0100
++				0x01000002 0x0700
++				0x01000003 0x1030
++				0x01000004 0x0000
++				0x01000008 0x0207
++				0x01000009 0x0000
++				0x0100000a 0x0000
++				0x0100000c 0x0001
++				0x0100000d 0x0000
++				0x0100000f 0x0000
++				0x01000010 0x0000
++				0x01000011 0x0007
++				0x01000012 0x0000
++				0x01000013 0x0000
++				0x02000032
++				0x01000010 0x1590
++				0x01000011 0x0227
++				0x02000032
++				0x01000012 0x009c
++				0x02000032
++				0x01000013 0x1900
++				0x01000029 0x0023
++				0x0100002b 0x000e
++				0x02000032
++				0x01000020 0x0000
++				0x01000021 0x0000
++				0x02000032
++				0x01000050 0x0000
++				0x01000051 0x00ef
++				0x01000052 0x0000
++				0x01000053 0x013f
++				0x01000060 0xa700
++				0x01000061 0x0001
++				0x0100006a 0x0000
++				0x01000080 0x0000
++				0x01000081 0x0000
++				0x01000082 0x0000
++				0x01000083 0x0000
++				0x01000084 0x0000
++				0x01000085 0x0000
++				0x01000090 0x0010
++				0x01000092 0x0000
++				0x01000093 0x0003
++				0x01000095 0x0110
++				0x01000097 0x0000
++				0x01000098 0x0000
++				0x01000007 0x0133
++				0x01000020 0x0000
++				0x01000021 0x0000
++				0x02000064>;
++			startbyte = <0x70>;
++			bgr;
++			fps = <50>;
++			gamma = "04 1F 4 7 7 0 7 7 6 0\n0F 00 1 7 4 0 0 0 6 7";
++		};
++	};
++
++	/* itdb28_spi */
++	fragment@14 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9325";
++			spi-max-frequency = <32000000>;
++			bgr;
++		};
++	};
++
++	/* mi0283qt-2 */
++	fragment@15 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "himax,hx8347d";
++			spi-max-frequency = <32000000>;
++			startbyte = <0x70>;
++			bgr;
++		};
++	};
++
++	/* mi0283qt-9a */
++	fragment@16 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9341";
++			spi-max-frequency = <32000000>;
++			buswidth = <9>;
++			bgr;
++		};
++	};
++
++	/* nokia3310 */
++	fragment@17 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "philips,pcd8544";
++			spi-max-frequency = <400000>;
++		};
++	};
++
++	/* nokia3310a */
++	fragment@18 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "teralane,tls8204";
++			spi-max-frequency = <1000000>;
++		};
++	};
++
++	/* nokia5110 */
++	fragment@19 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9163";
++			spi-max-frequency = <12000000>;
++			bgr;
++		};
++	};
++
++	/* piscreen */
++	fragment@20 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9486";
++			spi-max-frequency = <32000000>;
++			regwidth = <16>;
++			bgr;
++		};
++	};
++
++	/* pitft */
++	fragment@21 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9340";
++			spi-max-frequency = <32000000>;
++			init = <0x01000001
++				0x02000005
++				0x01000028
++				0x010000EF 0x03 0x80 0x02
++				0x010000CF 0x00 0xC1 0x30
++				0x010000ED 0x64 0x03 0x12 0x81
++				0x010000E8 0x85 0x00 0x78
++				0x010000CB 0x39 0x2C 0x00 0x34 0x02
++				0x010000F7 0x20
++				0x010000EA 0x00 0x00
++				0x010000C0 0x23
++				0x010000C1 0x10
++				0x010000C5 0x3E 0x28
++				0x010000C7 0x86
++				0x0100003A 0x55
++				0x010000B1 0x00 0x18
++				0x010000B6 0x08 0x82 0x27
++				0x010000F2 0x00
++				0x01000026 0x01
++				0x010000E0 0x0F 0x31 0x2B 0x0C 0x0E 0x08 0x4E 0xF1 0x37 0x07 0x10 0x03 0x0E 0x09 0x00
++				0x010000E1 0x00 0x0E 0x14 0x03 0x11 0x07 0x31 0xC1 0x48 0x08 0x0F 0x0C 0x31 0x36 0x0F
++				0x01000011
++				0x02000064
++				0x01000029
++				0x02000014>;
++			bgr;
++		};
++	};
++
++	/* pioled */
++	fragment@22 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "solomon,ssd1351";
++			spi-max-frequency = <20000000>;
++			bgr;
++			gamma = "0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4";
++		};
++	};
++
++	/* rpi-display */
++	fragment@23 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9341";
++			spi-max-frequency = <32000000>;
++			bgr;
++		};
++	};
++
++	/* sainsmart18 */
++	fragment@24 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "sitronix,st7735r";
++			spi-max-frequency = <32000000>;
++		};
++	};
++
++	/* sainsmart32_spi */
++	fragment@25 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "solomon,ssd1289";
++			spi-max-frequency = <16000000>;
++			bgr;
++		};
++	};
++
++	/* tinylcd35 */
++	fragment@26 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "neosec,tinylcd";
++			spi-max-frequency = <32000000>;
++			bgr;
++		};
++	};
++
++	/* tm022hdh26 */
++	fragment@27 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9341";
++			spi-max-frequency = <32000000>;
++			bgr;
++		};
++	};
++
++	/* tontec35_9481 - boards before 02 July 2014 */
++	fragment@28 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9481";
++			spi-max-frequency = <128000000>;
++			spi-cpha;
++			spi-cpol;
++			bgr;
++		};
++	};
++
++	/* tontec35_9486 - boards after 02 July 2014 */
++	fragment@29 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9486";
++			spi-max-frequency = <128000000>;
++			spi-cpha;
++			spi-cpol;
++			bgr;
++		};
++	};
++
++	/* waveshare32b */
++	fragment@30 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "ilitek,ili9340";
++			spi-max-frequency = <48000000>;
++			init = <0x010000CB 0x39 0x2C 0x00 0x34 0x02
++				0x010000CF 0x00 0xC1 0x30
++				0x010000E8 0x85 0x00 0x78
++				0x010000EA 0x00 0x00
++				0x010000ED 0x64 0x03 0x12 0x81
++				0x010000F7 0x20
++				0x010000C0 0x23
++				0x010000C1 0x10
++				0x010000C5 0x3E 0x28
++				0x010000C7 0x86
++				0x01000036 0x28
++				0x0100003A 0x55
++				0x010000B1 0x00 0x18
++				0x010000B6 0x08 0x82 0x27
++				0x010000F2 0x00
++				0x01000026 0x01
++				0x010000E0 0x0F 0x31 0x2B 0x0C 0x0E 0x08 0x4E 0xF1 0x37 0x07 0x10 0x03 0x0E 0x09 0x00
++				0x010000E1 0x00 0x0E 0x14 0x03 0x11 0x07 0x31 0xC1 0x48 0x08 0x0F 0x0C 0x31 0x36 0x0F
++				0x01000011
++				0x02000078
++				0x01000029
++				0x0100002C>;
++			bgr;
++		};
++	};
++
++	/* waveshare22 */
++	fragment@31 {
++		target = <&display>;
++		__dormant__ {
++			compatible = "hitachi,bd663474";
++			spi-max-frequency = <32000000>;
++			spi-cpha;
++			spi-cpol;
++		};
++	};
++
++	spidev_fragment: fragment@100 {
++		target-path = "spi0/spidev@0";
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	display_fragment: fragment@101 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			display: display@0{
++				reg = <0>;
++				spi-max-frequency = <32000000>;
++				fps = <30>;
++				buswidth = <8>;
++			};
++		};
++	};
++
++	__overrides__ {
++		spi0-0        = <&display_fragment>, "target:0=",<&spi0>,
++				<&spidev_fragment>, "target-path=spi0/spidev@0",
++				<&display>, "reg:0=0";
++		spi0-1        = <&display_fragment>, "target:0=",<&spi0>,
++				<&spidev_fragment>, "target-path=spi0/spidev@1",
++				<&display>, "reg:0=1";
++		spi1-0        = <&display_fragment>, "target:0=",<&spi1>,
++				<&spidev_fragment>, "target-path=spi1/spidev@0",
++				<&display>, "reg:0=0";
++		spi1-1        = <&display_fragment>, "target:0=",<&spi1>,
++				<&spidev_fragment>, "target-path=spi1/spidev@1",
++				<&display>, "reg:0=1";
++		spi1-2        = <&display_fragment>, "target:0=",<&spi1>,
++				<&spidev_fragment>, "target-path=spi1/spidev@2",
++				<&display>, "reg:0=2";
++		spi2-0        = <&display_fragment>, "target:0=",<&spi2>,
++				<&spidev_fragment>, "target-path=spi2/spidev@0",
++				<&display>, "reg:0=0";
++		spi2-1        = <&display_fragment>, "target:0=",<&spi2>,
++				<&spidev_fragment>, "target-path=spi2/spidev@1",
++				<&display>, "reg:0=1";
++		spi2-2        = <&display_fragment>, "target:0=",<&spi2>,
++				<&spidev_fragment>, "target-path=spi2/spidev@2",
++				<&display>, "reg:0=2";
++
++		speed         = <&display>, "spi-max-frequency:0";
++		cpha          = <&display>, "spi-cpha?";
++		cpol          = <&display>, "spi-cpol?";
++
++		/* Displays */
++		adafruit18    = <0>, "+0";
++		adafruit22    = <0>, "+1";
++		adafruit22a   = <0>, "+2";
++		adafruit28    = <0>, "+3";
++		adafruit13m   = <0>, "+4";
++		admatec_c-berry28 = <0>, "+5";
++		dogs102       = <0>, "+6";
++		er_tftm050_2  = <0>, "+7";
++		er_tftm070_5  = <0>, "+8";
++		ew24ha0       = <0>, "+9";
++		ew24ha0_9bit  = <0>, "+10";
++		freetronicsoled128 = <0>, "+11";
++		hy28a         = <0>, "+12";
++		hy28b         = <0>, "+13";
++		itdb28_spi    = <0>, "+14";
++		mi0283qt-2    = <0>, "+15";
++		mi0283qt-9a   = <0>, "+16";
++		nokia3310     = <0>, "+17";
++		nokia3310a    = <0>, "+18";
++		nokia5110     = <0>, "+19";
++		piscreen      = <0>, "+20";
++		pitft         = <0>, "+21";
++		pioled        = <0>, "+22";
++		rpi-display   = <0>, "+23";
++		sainsmart18   = <0>, "+24";
++		sainsmart32_spi = <0>, "+25";
++		tinylcd35     = <0>, "+26";
++		tm022hdh26    = <0>, "+27";
++		tontec35_9481 = <0>, "+28";
++		tontec35_9486 = <0>, "+29";
++		waveshare32b  = <0>, "+30";
++		waveshare22   = <0>, "+31";
++
++		/* Controllers */
++		bd663474      = <&display>, "compatible=hitachi,bd663474";
++		hx8340bn      = <&display>, "compatible=himax,hx8340bn";
++		hx8347d       = <&display>, "compatible=himax,hx8347d";
++		hx8353d       = <&display>, "compatible=himax,hx8353d";
++		hx8357d       = <&display>, "compatible=himax,hx8357d";
++		ili9163       = <&display>, "compatible=ilitek,ili9163";
++		ili9320       = <&display>, "compatible=ilitek,ili9320";
++		ili9325       = <&display>, "compatible=ilitek,ili9325";
++		ili9340       = <&display>, "compatible=ilitek,ili9340";
++		ili9341       = <&display>, "compatible=ilitek,ili9341";
++		ili9481       = <&display>, "compatible=ilitek,ili9481";
++		ili9486       = <&display>, "compatible=ilitek,ili9486";
++		pcd8544       = <&display>, "compatible=philips,pcd8544";
++		ra8875        = <&display>, "compatible=raio,ra8875";
++		s6d02a1       = <&display>, "compatible=samsung,s6d02a1";
++		s6d1121       = <&display>, "compatible=samsung,s6d1121";
++		seps525       = <&display>, "compatible=syncoam,seps525";
++		sh1106        = <&display>, "compatible=sinowealth,sh1106";
++		ssd1289       = <&display>, "compatible=solomon,ssd1289";
++		ssd1305       = <&display>, "compatible=solomon,ssd1305";
++		ssd1306       = <&display>, "compatible=solomon,ssd1306";
++		ssd1325       = <&display>, "compatible=solomon,ssd1325";
++		ssd1331       = <&display>, "compatible=solomon,ssd1331";
++		ssd1351       = <&display>, "compatible=solomon,ssd1351";
++		st7735r       = <&display>, "compatible=sitronix,st7735r";
++		st7789v       = <&display>, "compatible=sitronix,st7789v";
++		tls8204       = <&display>, "compatible=teralane,tls8204";
++		uc1611        = <&display>, "compatible=ultrachip,uc1611";
++		uc1701        = <&display>, "compatible=UltraChip,uc1701";
++		upd161704     = <&display>, "compatible=nec,upd161704";
++
++		width         = <&display>, "width:0";
++		height        = <&display>, "height:0";
++		regwidth      = <&display>, "regwidth:0";
++		buswidth      = <&display>, "buswidth:0";
++		debug         = <&display>, "debug:0";
++		rotate        = <&display>, "rotate:0";
++		bgr           = <&display>, "bgr?";
++		fps           = <&display>, "fps:0";
++		txbuflen      = <&display>, "txbuflen:0";
++		startbyte     = <&display>, "startbyte:0";
++		gamma         = <&display>, "gamma";
++
++		reset_pin     = <&display>, "reset-gpios:0=", <&gpio>,
++				<&display>, "reset-gpios:4",
++				<&display>, "reset-gpios:8=1"; /* GPIO_ACTIVE_LOW */
++		dc_pin        = <&display>, "dc-gpios:0=", <&gpio>,
++				<&display>, "dc-gpios:4",
++				<&display>, "dc-gpios:8=0"; /* GPIO_ACTIVE_HIGH */
++		led_pin       = <&display>, "led-gpios:0=", <&gpio>,
++				<&display>, "led-gpios:4",
++				<&display>, "led-gpios:8=0"; /* GPIO_ACTIVE_HIGH */
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0566-overlays-Additional-parameters-for-gpio-poweroff.patch b/target/linux/bcm27xx/patches-5.15/950-0566-overlays-Additional-parameters-for-gpio-poweroff.patch
new file mode 100644
index 0000000000..e6c7b5fd15
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0566-overlays-Additional-parameters-for-gpio-poweroff.patch
@@ -0,0 +1,50 @@
+From ae5bd19ff96560fb75a75c7d2374bed60bbd9669 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 11 Nov 2021 10:24:02 +0000
+Subject: [PATCH] overlays: Additional parameters for gpio-poweroff
+
+The gpio-poweroff driver supports active-delay-ms and inactive-delay-ms
+properties. Add parameters to set these parameters - active_delay_ms
+and inactive_delay_ms.
+
+See: https://forums.raspberrypi.com/viewtopic.php?t=323508
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README                    | 7 +++++++
+ arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts | 2 ++
+ 2 files changed, 9 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1155,6 +1155,11 @@ Info:   Drives a GPIO high or low on pow
+         or reboot). This also disables the ability to trigger a boot by driving
+         GPIO3 low.
+ 
++        The GPIO starts in an inactive state. At poweroff time it is driven
++        active for 100ms, then inactive for 100ms, then active again. It is
++        safe to remove the power at any point after the initial activation of
++        the GPIO.
++
+         Users of this overlay are required to provide an external mechanism to
+         switch off the power supply when signalled - failure to do so results
+         in a kernel BUG, increased power consumption and undefined behaviour.
+@@ -1170,6 +1175,8 @@ Params: gpiopin                 GPIO for
+         input                   Set if the gpio pin should be configured as
+                                 an input.
+         export                  Set to export the configured pin to sysfs
++        active_delay_ms         Initial GPIO active period (default 100)
++        inactive_delay_ms       Subsequent GPIO inactive period (default 100)
+         timeout_ms              Specify (in ms) how long the kernel waits for
+                                 power-down before issuing a WARN (default 3000).
+ 
+--- a/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts
++++ b/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts
+@@ -33,5 +33,7 @@
+ 		input =         <&power_ctrl>,"input?";
+ 		export =        <&power_ctrl>,"export?";
+ 		timeout_ms =    <&power_ctrl>,"timeout-ms:0";
++		active_delay_ms = <&power_ctrl>,"active-delay-ms:0";
++		inactive_delay_ms = <&power_ctrl>,"inactive-delay-ms:0";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch b/target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch
new file mode 100644
index 0000000000..c0aee3797d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch
@@ -0,0 +1,26 @@
+From 3e52ea57180471250ba4bb426527ab9bbad4e5a4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 8 Nov 2021 13:55:15 +0000
+Subject: [PATCH] drm: Fix double free from checking if gamma lut has
+ been updated
+
+The code falls through to "fail" under all conditions, so there is no
+need for the drm_property_blob_put if the gamma lut hasn't been changed.
+Fixes: 9cca26674a2b "drm: Check whether the gamma lut has changed before updating"
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/drm_color_mgmt.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/drivers/gpu/drm/drm_color_mgmt.c
++++ b/drivers/gpu/drm/drm_color_mgmt.c
+@@ -330,8 +330,6 @@ static int drm_crtc_legacy_gamma_set(str
+ 	    memcmp(crtc_state->gamma_lut->data, blob_data, blob->length))
+ 		replaced |= drm_property_replace_blob(&crtc_state->gamma_lut,
+ 					      use_gamma_lut ? blob : NULL);
+-	else
+-		drm_property_blob_put(blob);
+ 	crtc_state->color_mgmt_changed |= replaced;
+ 
+ 	ret = drm_atomic_commit(state);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0568-drm-vc4-Enable-gamma-block-only-when-required.patch b/target/linux/bcm27xx/patches-5.15/950-0568-drm-vc4-Enable-gamma-block-only-when-required.patch
new file mode 100644
index 0000000000..3fc546a394
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0568-drm-vc4-Enable-gamma-block-only-when-required.patch
@@ -0,0 +1,66 @@
+From 66d8a98666f29d7f8de926963bd4965aeeb89f13 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 8 Nov 2021 17:32:45 +0000
+Subject: [PATCH] drm/vc4: Enable gamma block only when required.
+
+With HVS5 the gamma block is now only reprogrammed with
+a disable/enable. Loading the table from vc4_hvs_init_channel
+(called from vc4_hvs_atomic_enable) appears to be at an
+invalid point in time and so isn't applied.
+
+Switch to enabling and disabling the gamma table instead. This
+isn't safe if the pipeline is running, but it isn't now.
+For HVS4 it is safe to enable and disable dynamically, so
+adopt that approach there too.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 22 +++++++++++++++++-----
+ 1 file changed, 17 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -480,8 +480,12 @@ static int vc4_hvs_init_channel(struct v
+ 	dispbkgndx &= ~SCALER_DISPBKGND_GAMMA;
+ 	dispbkgndx &= ~SCALER_DISPBKGND_INTERLACE;
+ 
++	if (crtc->state->gamma_lut)
++		/* Enable gamma on if required */
++		dispbkgndx |= SCALER_DISPBKGND_GAMMA;
++
+ 	HVS_WRITE(SCALER_DISPBKGNDX(chan), dispbkgndx |
+-		  SCALER_DISPBKGND_AUTOHS | SCALER_DISPBKGND_GAMMA |
++		  SCALER_DISPBKGND_AUTOHS |
+ 		  (interlace ? SCALER_DISPBKGND_INTERLACE : 0));
+ 
+ 	/* Reload the LUT, since the SRAMs would have been disabled if
+@@ -718,17 +722,25 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 		u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(vc4_state->assigned_channel));
+ 
+ 		if (crtc->state->gamma_lut) {
+-			if (!vc4->hvs->hvs5)
++			if (!vc4->hvs->hvs5) {
+ 				vc4_hvs_update_gamma_lut(crtc);
+-			else
++				dispbkgndx |= SCALER_DISPBKGND_GAMMA;
++			} else {
+ 				vc5_hvs_update_gamma_lut(crtc);
+-			dispbkgndx |= SCALER_DISPBKGND_GAMMA;
++			}
+ 		} else {
+ 			/* Unsetting DISPBKGND_GAMMA skips the gamma lut step
+ 			 * in hardware, which is the same as a linear lut that
+ 			 * DRM expects us to use in absence of a user lut.
++			 *
++			 * Do NOT change state dynamically for hvs5 as it
++			 * inserts a delay in the pipeline that will cause
++			 * stalls if enabled/disabled whilst running. The other
++			 * should already be disabling/enabling the pipeline
++			 * when gamma changes.
+ 			 */
+-			dispbkgndx &= ~SCALER_DISPBKGND_GAMMA;
++			if (!vc4->hvs->hvs5)
++				dispbkgndx &= ~SCALER_DISPBKGND_GAMMA;
+ 		}
+ 		HVS_WRITE(SCALER_DISPBKGNDX(vc4_state->assigned_channel), dispbkgndx);
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0569-drm-vc4-Only-add-gamma-properties-once.patch b/target/linux/bcm27xx/patches-5.15/950-0569-drm-vc4-Only-add-gamma-properties-once.patch
new file mode 100644
index 0000000000..0c7e76d463
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0569-drm-vc4-Only-add-gamma-properties-once.patch
@@ -0,0 +1,26 @@
+From 749ff7fb1f2382f19ed744a86e82211711187db2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 8 Nov 2021 18:25:49 +0000
+Subject: [PATCH] drm/vc4: Only add gamma properties once.
+
+Two calls were made to drm_crtc_enable_color_mgmt to add gamma
+and CTM, however they were both set to add the gamma properties,
+so they ended up added twice.
+
+Fixes: 766cc6b1f7fc "drm/vc4: Add CTM support"
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -1196,7 +1196,7 @@ int vc4_crtc_init(struct drm_device *drm
+ 		/* We support CTM, but only for one CRTC at a time. It's therefore
+ 		 * implemented as private driver state in vc4_kms, not here.
+ 		 */
+-		drm_crtc_enable_color_mgmt(crtc, 0, true, crtc->gamma_size);
++		drm_crtc_enable_color_mgmt(crtc, 0, true, 0);
+ 
+ 		/* Initialize the VC4 gamma LUTs */
+ 		for (i = 0; i < crtc->gamma_size; i++) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0570-dtoverlays-Remove-i2c0mux-and-i20if-status-from-edt-.patch b/target/linux/bcm27xx/patches-5.15/950-0570-dtoverlays-Remove-i2c0mux-and-i20if-status-from-edt-.patch
new file mode 100644
index 0000000000..be5648c028
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0570-dtoverlays-Remove-i2c0mux-and-i20if-status-from-edt-.patch
@@ -0,0 +1,77 @@
+From 064acb7882a7d9897dc5f8117ca9a94970387701 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 10 Nov 2021 15:55:32 +0000
+Subject: [PATCH] dtoverlays: Remove i2c0mux and i20if status from
+ edt-ft5406.dtsi
+
+edt-ft5406.dtsi is included from vc4-kms-dsi-7inch which was
+also setting i2c0mux and i2c0if status fields. This meant that
+dtoverlay wouldn't apply the overlay due to multiple fragments
+changing the same parameter.
+
+Move the enable from edt-ft5406.dtsi to edt-ft5406-overlay.dts
+for when it should be needed as an independent overlay.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../arm/boot/dts/overlays/edt-ft5406-overlay.dts | 16 ++++++++++++++++
+ arch/arm/boot/dts/overlays/edt-ft5406.dtsi       |  8 --------
+ .../dts/overlays/vc4-kms-dsi-7inch-overlay.dts   |  2 +-
+ 3 files changed, 17 insertions(+), 9 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/edt-ft5406-overlay.dts
++++ b/arch/arm/boot/dts/overlays/edt-ft5406-overlay.dts
+@@ -8,3 +8,19 @@
+ /plugin/;
+ 
+ #include "edt-ft5406.dtsi"
++
++/ {
++	fragment@0 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++};
+--- a/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
++++ b/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
+@@ -27,7 +27,6 @@
+ 		__overlay__ {
+ 			#address-cells = <1>;
+ 			#size-cells = <0>;
+-			status = "okay";
+ 			ft5406: ts@38 {
+ 				compatible = "edt,edt-ft5406";
+ 				reg = <0x38>;
+@@ -38,13 +37,6 @@
+ 		};
+ 	};
+ 
+-	fragment@13 {
+-		target = <&i2c0if>;
+-		__overlay__ {
+-			status = "okay";
+-		};
+-	};
+-
+ 	__overrides__ {
+ 		sizex = <&ft5406>,"touchscreen-size-x:0";
+ 		sizey = <&ft5406>,"touchscreen-size-y:0";
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
+@@ -113,6 +113,6 @@
+ 	};
+ 
+ 	__overrides__ {
+-		disable_touch = <0>, "-10-11-12-13";
++		disable_touch = <0>, "-10-11-12";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0571-drm-vc4-Validate-the-size-of-the-gamma_lut.patch b/target/linux/bcm27xx/patches-5.15/950-0571-drm-vc4-Validate-the-size-of-the-gamma_lut.patch
new file mode 100644
index 0000000000..09852e0407
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0571-drm-vc4-Validate-the-size-of-the-gamma_lut.patch
@@ -0,0 +1,32 @@
+From 38ff187b7bb7524a6c8040c76889637068723f35 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 10 Nov 2021 16:36:12 +0000
+Subject: [PATCH] drm/vc4: Validate the size of the gamma_lut
+
+Add a check to vc4_hvs_gamma_check to ensure a new non-empty
+gamma LUT is of the correct length before accepting it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -538,6 +538,16 @@ static int vc4_hvs_gamma_check(struct dr
+ 	if (!crtc_state->color_mgmt_changed)
+ 		return 0;
+ 
++	if (crtc_state->gamma_lut) {
++		unsigned int len = drm_color_lut_size(crtc_state->gamma_lut);
++
++		if (len != crtc->gamma_size) {
++			DRM_DEBUG_KMS("Invalid LUT size; got %u, expected %u\n",
++				      len, crtc->gamma_size);
++			return -EINVAL;
++		}
++	}
++
+ 	connector = vc4_get_crtc_connector(crtc, crtc_state);
+ 	if (!connector)
+ 		return -EINVAL;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0572-drm-vc4-Don-t-try-disabling-SCDC-on-Pi0-3.patch b/target/linux/bcm27xx/patches-5.15/950-0572-drm-vc4-Don-t-try-disabling-SCDC-on-Pi0-3.patch
new file mode 100644
index 0000000000..6b7acd8e4a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0572-drm-vc4-Don-t-try-disabling-SCDC-on-Pi0-3.patch
@@ -0,0 +1,32 @@
+From e1ee82fdfdba0b210974cf3ccc0048c5aeb83bc6 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 16 Nov 2021 10:34:34 +0000
+Subject: [PATCH] drm/vc4: Don't try disabling SCDC on Pi0-3.
+
+The code that set the scdc_enabled flag to ensure it was
+disabled at boot time also ran on Pi0-3 where there is no
+SCDC support. This lead to a warning in vc4_hdmi_encoder_post_crtc_disable
+due to vc4_hdmi_disable_scrambling being called and trying to
+read (and write) register HDMI_SCRAMBLER_CTL which doesn't
+exist on those platforms.
+
+Only set the flag should the interface be configured to support
+more than HDMI 1.4.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -2557,7 +2557,8 @@ static int vc4_hdmi_bind(struct device *
+ 	 * vc4_hdmi_disable_scrambling() will thus run at boot, make
+ 	 * sure it's disabled, and avoid any inconsistency.
+ 	 */
+-	vc4_hdmi->scdc_enabled = true;
++	if (variant->max_pixel_clock > HDMI_14_MAX_TMDS_CLK)
++		vc4_hdmi->scdc_enabled = true;
+ 
+ 	ret = variant->init_resources(vc4_hdmi);
+ 	if (ret)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0573-media-i2c-ov5647-Support-HFLIP-and-VFLIP.patch b/target/linux/bcm27xx/patches-5.15/950-0573-media-i2c-ov5647-Support-HFLIP-and-VFLIP.patch
new file mode 100644
index 0000000000..6cf661b4dd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0573-media-i2c-ov5647-Support-HFLIP-and-VFLIP.patch
@@ -0,0 +1,189 @@
+From 08cc1dcf1437d65dbb36dda27db29ec3a689101f Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Mon, 22 Nov 2021 13:10:39 +0000
+Subject: [PATCH] media: i2c: ov5647: Support HFLIP and VFLIP
+
+Add these missing V4L2 controls. Tested binned and full resolution
+modes in all four orientations using Raspberry Pi running libcamera.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 76 +++++++++++++++++++++++++++++++++++---
+ 1 file changed, 70 insertions(+), 6 deletions(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -54,6 +54,8 @@
+ #define OV5647_REG_GAIN_LO		0x350b
+ #define OV5647_REG_VTS_HI		0x380e
+ #define OV5647_REG_VTS_LO		0x380f
++#define OV5647_REG_VFLIP		0x3820
++#define OV5647_REG_HFLIP		0x3821
+ #define OV5647_REG_FRAME_OFF_NUMBER	0x4202
+ #define OV5647_REG_MIPI_CTRL00		0x4800
+ #define OV5647_REG_MIPI_CTRL14		0x4814
+@@ -108,6 +110,8 @@ struct ov5647 {
+ 	struct v4l2_ctrl		*hblank;
+ 	struct v4l2_ctrl		*vblank;
+ 	struct v4l2_ctrl		*exposure;
++	struct v4l2_ctrl		*hflip;
++	struct v4l2_ctrl		*vflip;
+ 	bool				streaming;
+ };
+ 
+@@ -136,7 +140,7 @@ static struct regval_list ov5647_2592x19
+ 	{0x3036, 0x69},
+ 	{0x303c, 0x11},
+ 	{0x3106, 0xf5},
+-	{0x3821, 0x06},
++	{0x3821, 0x00},
+ 	{0x3820, 0x00},
+ 	{0x3827, 0xec},
+ 	{0x370c, 0x03},
+@@ -225,7 +229,7 @@ static struct regval_list ov5647_1080p30
+ 	{0x3036, 0x62},
+ 	{0x303c, 0x11},
+ 	{0x3106, 0xf5},
+-	{0x3821, 0x06},
++	{0x3821, 0x00},
+ 	{0x3820, 0x00},
+ 	{0x3827, 0xec},
+ 	{0x370c, 0x03},
+@@ -389,7 +393,7 @@ static struct regval_list ov5647_2x2binn
+ 	{0x4800, 0x24},
+ 	{0x3503, 0x03},
+ 	{0x3820, 0x41},
+-	{0x3821, 0x07},
++	{0x3821, 0x01},
+ 	{0x350a, 0x00},
+ 	{0x350b, 0x10},
+ 	{0x3500, 0x00},
+@@ -405,7 +409,7 @@ static struct regval_list ov5647_640x480
+ 	{0x3035, 0x11},
+ 	{0x3036, 0x46},
+ 	{0x303c, 0x11},
+-	{0x3821, 0x07},
++	{0x3821, 0x01},
+ 	{0x3820, 0x41},
+ 	{0x370c, 0x03},
+ 	{0x3612, 0x59},
+@@ -946,6 +950,25 @@ static const struct v4l2_subdev_video_op
+ 	.s_stream =		ov5647_s_stream,
+ };
+ 
++/* This function returns the mbus code for the current settings of the
++   HFLIP and VFLIP controls. */
++
++static u32 ov5647_get_mbus_code(struct v4l2_subdev *sd)
++{
++	struct ov5647 *sensor = to_sensor(sd);
++	/* The control values are only 0 or 1. */
++	int index =  sensor->hflip->val | (sensor->vflip->val << 1);
++
++	static const u32 codes[4] = {
++		MEDIA_BUS_FMT_SGBRG10_1X10,
++		MEDIA_BUS_FMT_SBGGR10_1X10,
++		MEDIA_BUS_FMT_SRGGB10_1X10,
++		MEDIA_BUS_FMT_SGRBG10_1X10
++	};
++
++	return codes[index];
++}
++
+ static int ov5647_enum_mbus_code(struct v4l2_subdev *sd,
+ 				 struct v4l2_subdev_state *sd_state,
+ 				 struct v4l2_subdev_mbus_code_enum *code)
+@@ -953,7 +976,7 @@ static int ov5647_enum_mbus_code(struct
+ 	if (code->index > 0)
+ 		return -EINVAL;
+ 
+-	code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
++	code->code = ov5647_get_mbus_code(sd);
+ 
+ 	return 0;
+ }
+@@ -964,7 +987,7 @@ static int ov5647_enum_frame_size(struct
+ {
+ 	const struct v4l2_mbus_framefmt *fmt;
+ 
+-	if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10 ||
++	if (fse->code != ov5647_get_mbus_code(sd) ||
+ 	    fse->index >= ARRAY_SIZE(ov5647_modes))
+ 		return -EINVAL;
+ 
+@@ -997,6 +1020,8 @@ static int ov5647_get_pad_fmt(struct v4l
+ 	}
+ 
+ 	*fmt = *sensor_format;
++	/* The code we pass back must reflect the current h/vflips. */
++	fmt->code = ov5647_get_mbus_code(sd);
+ 	mutex_unlock(&sensor->lock);
+ 
+ 	return 0;
+@@ -1044,6 +1069,8 @@ static int ov5647_set_pad_fmt(struct v4l
+ 					 exposure_def);
+ 	}
+ 	*fmt = mode->format;
++	/* The code we pass back must reflect the current h/vflips. */
++	fmt->code = ov5647_get_mbus_code(sd);
+ 	mutex_unlock(&sensor->lock);
+ 
+ 	return 0;
+@@ -1219,6 +1246,25 @@ static int ov5647_s_exposure(struct v4l2
+ 	return ov5647_write(sd, OV5647_REG_EXP_LO, (val & 0xf) << 4);
+ }
+ 
++static int ov5647_s_flip( struct v4l2_subdev *sd, u16 reg, u32 ctrl_val)
++{
++	int ret;
++	u8 reg_val;
++
++	/* Set or clear bit 1 and leave everything else alone. */
++	ret = ov5647_read(sd, reg, &reg_val);
++	if (ret == 0) {
++		if (ctrl_val)
++			reg_val |= 2;
++		else
++			reg_val &= ~2;
++
++		ret = ov5647_write(sd, reg, reg_val);
++	}
++
++	return ret;
++}
++
+ static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl)
+ {
+ 	struct ov5647 *sensor = container_of(ctrl->handler,
+@@ -1277,6 +1323,14 @@ static int ov5647_s_ctrl(struct v4l2_ctr
+ 		/* Read-only, but we adjust it based on mode. */
+ 		break;
+ 
++	case V4L2_CID_HFLIP:
++		/* There's an in-built hflip in the sensor, so account for that here. */
++		ov5647_s_flip(sd, OV5647_REG_HFLIP, !ctrl->val);
++		break;
++	case V4L2_CID_VFLIP:
++		ov5647_s_flip(sd, OV5647_REG_VFLIP, ctrl->val);
++		break;
++
+ 	default:
+ 		dev_info(&client->dev,
+ 			 "Control (id:0x%x, val:0x%x) not supported\n",
+@@ -1343,6 +1397,16 @@ static int ov5647_init_controls(struct o
+ 					   sensor->mode->vts -
+ 					   sensor->mode->format.height);
+ 
++	sensor->hflip = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
++					  V4L2_CID_HFLIP, 0, 1, 1, 0);
++	if (sensor->hflip)
++		sensor->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++
++	sensor->vflip = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
++					  V4L2_CID_VFLIP, 0, 1, 1, 0);
++	if (sensor->vflip)
++		sensor->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++
+ 	v4l2_fwnode_device_parse(dev, &props);
+ 
+ 	v4l2_ctrl_new_fwnode_properties(&sensor->ctrls, &ov5647_ctrl_ops,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0574-drivers-bcm2835_isp-Allow-multiple-users-for-the-ISP.patch b/target/linux/bcm27xx/patches-5.15/950-0574-drivers-bcm2835_isp-Allow-multiple-users-for-the-ISP.patch
new file mode 100644
index 0000000000..a9bb7ecba3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0574-drivers-bcm2835_isp-Allow-multiple-users-for-the-ISP.patch
@@ -0,0 +1,173 @@
+From 3d3cffb860398e43856ac5f2c831cb042be68795 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 16 Nov 2021 12:38:44 +0000
+Subject: [PATCH] drivers: bcm2835_isp: Allow multiple users for the
+ ISP driver.
+
+Add a second (identical) set of device nodes to allow concurrent use of the ISP
+hardware by another user. This change effectively creates a second state
+structure (struct bcm2835_isp_dev) to maintain independent state for the second
+user. Node and media entity names are appened with the instance index
+appropriately.
+
+Further users can be added by changing the BCM2835_ISP_NUM_INSTANCES define.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../bcm2835-isp/bcm2835-v4l2-isp.c            | 76 +++++++++++++++----
+ 1 file changed, 60 insertions(+), 16 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -26,13 +26,19 @@
+ #include "bcm2835-isp-ctrls.h"
+ #include "bcm2835-isp-fmts.h"
+ 
++/*
++ * We want to instantiate 2 independent instances allowing 2 simultaneous users
++ * of the ISP hardware.
++ */
++#define BCM2835_ISP_NUM_INSTANCES 2
++
+ static unsigned int debug;
+ module_param(debug, uint, 0644);
+ MODULE_PARM_DESC(debug, "activates debug info");
+ 
+-static unsigned int video_nr = 13;
+-module_param(video_nr, uint, 0644);
+-MODULE_PARM_DESC(video_nr, "base video device number");
++static unsigned int video_nr[BCM2835_ISP_NUM_INSTANCES] = { 13, 20 };
++module_param_array(video_nr, uint, NULL, 0644);
++MODULE_PARM_DESC(video_nr, "base video device numbers");
+ 
+ #define BCM2835_ISP_NAME "bcm2835-isp"
+ #define BCM2835_ISP_ENTITY_NAME_LEN 32
+@@ -1279,6 +1285,7 @@ static int bcm2835_isp_get_supported_fmt
+  * or output nodes.
+  */
+ static int register_node(struct bcm2835_isp_dev *dev,
++			 unsigned int instance,
+ 			 struct bcm2835_isp_node *node,
+ 			 int index)
+ {
+@@ -1439,7 +1446,7 @@ static int register_node(struct bcm2835_
+ 	snprintf(vfd->name, sizeof(node->vfd.name), "%s-%s%d", BCM2835_ISP_NAME,
+ 		 node->name, node->id);
+ 
+-	ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr + index);
++	ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr[instance]);
+ 	if (ret) {
+ 		v4l2_err(&dev->v4l2_dev,
+ 			 "Failed to register video %s[%d] device node\n",
+@@ -1660,9 +1667,8 @@ done:
+ 	return ret;
+ }
+ 
+-static int bcm2835_isp_remove(struct platform_device *pdev)
++static void bcm2835_isp_remove_instance(struct bcm2835_isp_dev *dev)
+ {
+-	struct bcm2835_isp_dev *dev = platform_get_drvdata(pdev);
+ 	unsigned int i;
+ 
+ 	media_controller_unregister(dev);
+@@ -1677,11 +1683,11 @@ static int bcm2835_isp_remove(struct pla
+ 					      dev->component);
+ 
+ 	vchiq_mmal_finalise(dev->mmal_instance);
+-
+-	return 0;
+ }
+ 
+-static int bcm2835_isp_probe(struct platform_device *pdev)
++static int bcm2835_isp_probe_instance(struct platform_device *pdev,
++				      struct bcm2835_isp_dev **dev_int,
++				      unsigned int instance)
+ {
+ 	struct bcm2835_isp_dev *dev;
+ 	unsigned int i;
+@@ -1691,6 +1697,7 @@ static int bcm2835_isp_probe(struct plat
+ 	if (!dev)
+ 		return -ENOMEM;
+ 
++	*dev_int = dev;
+ 	dev->dev = &pdev->dev;
+ 
+ 	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
+@@ -1708,7 +1715,7 @@ static int bcm2835_isp_probe(struct plat
+ 	if (ret) {
+ 		v4l2_err(&dev->v4l2_dev,
+ 			 "%s: failed to create ril.isp component\n", __func__);
+-		goto error;
++		return ret;
+ 	}
+ 
+ 	if (dev->component->inputs < BCM2835_ISP_NUM_OUTPUTS ||
+@@ -1720,7 +1727,7 @@ static int bcm2835_isp_probe(struct plat
+ 			  BCM2835_ISP_NUM_OUTPUTS,
+ 			  dev->component->outputs,
+ 			  BCM2835_ISP_NUM_CAPTURES + BCM2835_ISP_NUM_METADATA);
+-		goto error;
++		return -EINVAL;
+ 	}
+ 
+ 	atomic_set(&dev->num_streaming, 0);
+@@ -1728,17 +1735,54 @@ static int bcm2835_isp_probe(struct plat
+ 	for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
+ 		struct bcm2835_isp_node *node = &dev->node[i];
+ 
+-		ret = register_node(dev, node, i);
++		ret = register_node(dev, instance, node, i);
+ 		if (ret)
+-			goto error;
++			return ret;
+ 	}
+ 
+ 	ret = media_controller_register(dev);
+ 	if (ret)
+-		goto error;
++		return ret;
++
++	return 0;
++}
++
++static int bcm2835_isp_remove(struct platform_device *pdev)
++{
++	struct bcm2835_isp_dev **bcm2835_isp_instances;
++	unsigned int i;
++
++	bcm2835_isp_instances = platform_get_drvdata(pdev);
++	for (i = 0; i < BCM2835_ISP_NUM_INSTANCES; i++) {
++		if (bcm2835_isp_instances[i])
++			bcm2835_isp_remove_instance(bcm2835_isp_instances[i]);
++	}
++
++	return 0;
++}
++
++static int bcm2835_isp_probe(struct platform_device *pdev)
++{
++	struct bcm2835_isp_dev **bcm2835_isp_instances;
++	unsigned int i;
++	int ret;
++
++	bcm2835_isp_instances = devm_kzalloc(&pdev->dev,
++					     sizeof(bcm2835_isp_instances) *
++						      BCM2835_ISP_NUM_INSTANCES,
++					     GFP_KERNEL);
++	if (!bcm2835_isp_instances)
++		return -ENOMEM;
++
++	for (i = 0; i < BCM2835_ISP_NUM_INSTANCES; i++) {
++		ret = bcm2835_isp_probe_instance(pdev,
++						 &bcm2835_isp_instances[i], i);
++		if (ret)
++			goto error;
++	}
+ 
+-	platform_set_drvdata(pdev, dev);
+-	v4l2_info(&dev->v4l2_dev, "Loaded V4L2 %s\n", BCM2835_ISP_NAME);
++	platform_set_drvdata(pdev, bcm2835_isp_instances);
++	dev_info(&pdev->dev, "Loaded V4L2 %s\n", BCM2835_ISP_NAME);
+ 	return 0;
+ 
+ error:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0575-drivers-bcm2835_isp-Fix-div-by-0-bug.patch b/target/linux/bcm27xx/patches-5.15/950-0575-drivers-bcm2835_isp-Fix-div-by-0-bug.patch
new file mode 100644
index 0000000000..f6a0d814be
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0575-drivers-bcm2835_isp-Fix-div-by-0-bug.patch
@@ -0,0 +1,23 @@
+From 7861b78bfcd6ac28bd0143af90b2a39136e8e8f8 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 25 Nov 2021 08:59:58 +0000
+Subject: [PATCH] drivers: bcm2835_isp: Fix div by 0 bug.
+
+Fix a possible division by 0 bug when setting up the mmal port for the stats
+port.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
+@@ -544,6 +544,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.step_size	    = 2,
+ 	}, {
+ 		.fourcc		    = V4L2_META_FMT_BCM2835_ISP_STATS,
++		.depth		    = 8,
+ 		.mmal_fmt	    = MMAL_ENCODING_BRCM_STATS,
+ 		/* The rest are not valid fields for stats. */
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0576-Pass-V4L2_CID_MPEG_VIDEO_H264_MIN_QP-MAX_QP-to-bcm28.patch b/target/linux/bcm27xx/patches-5.15/950-0576-Pass-V4L2_CID_MPEG_VIDEO_H264_MIN_QP-MAX_QP-to-bcm28.patch
new file mode 100644
index 0000000000..68f1d1ab7e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0576-Pass-V4L2_CID_MPEG_VIDEO_H264_MIN_QP-MAX_QP-to-bcm28.patch
@@ -0,0 +1,67 @@
+From 3d21c93db479bf4269630676ba7d48dec9bf75fc Mon Sep 17 00:00:00 2001
+From: Maxim Devaev <mdevaev@gmail.com>
+Date: Wed, 17 Nov 2021 04:57:56 +0300
+Subject: [PATCH] Pass V4L2_CID_MPEG_VIDEO_H264_MIN_QP/MAX_QP to
+ bcm2835-v4l2-codec
+
+Following raspberrypi/linux#4704. This is necessary to set up
+quantization for variable bitrate to avoid video flickering.
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 32 ++++++++++++++++++-
+ 1 file changed, 31 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -2187,6 +2187,28 @@ static int bcm2835_codec_s_ctrl(struct v
+ 		ret = bcm2835_codec_set_level_profile(ctx, ctrl);
+ 		break;
+ 
++	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_VIDEO_ENCODE_MIN_QUANT,
++						    &ctrl->val,
++						    sizeof(ctrl->val));
++		break;
++
++	case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT,
++						    &ctrl->val,
++						    sizeof(ctrl->val));
++		break;
++
+ 	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: {
+ 		u32 mmal_bool = 1;
+ 
+@@ -3103,7 +3125,7 @@ static int bcm2835_codec_open(struct fil
+ 	case ENCODE:
+ 	{
+ 		/* Encode controls */
+-		v4l2_ctrl_handler_init(hdl, 9);
++		v4l2_ctrl_handler_init(hdl, 11);
+ 
+ 		v4l2_ctrl_new_std_menu(hdl, &bcm2835_codec_ctrl_ops,
+ 				       V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
+@@ -3152,6 +3174,14 @@ static int bcm2835_codec_open(struct fil
+ 					 BIT(V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
+ 					V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
+ 		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_MPEG_VIDEO_H264_MIN_QP,
++				  0, 51,
++				  1, 20);
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_MPEG_VIDEO_H264_MAX_QP,
++				  0, 51,
++				  1, 51);
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
+ 				  V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME,
+ 				  0, 0, 0, 0);
+ 		if (hdl->error) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0577-ARM-dts-Update-rpi-400-and-cm4-dts-to-match-4-b.patch b/target/linux/bcm27xx/patches-5.15/950-0577-ARM-dts-Update-rpi-400-and-cm4-dts-to-match-4-b.patch
new file mode 100644
index 0000000000..6aabb715dd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0577-ARM-dts-Update-rpi-400-and-cm4-dts-to-match-4-b.patch
@@ -0,0 +1,334 @@
+From 34e658087e54db26ebd86f86a1549a393002a9ad Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 26 Nov 2021 15:20:06 +0000
+Subject: [PATCH] ARM: dts: Update rpi-400 and cm4 dts to match 4-b
+
+The Pi 4B dts file has had numerous updates since the Pi 400 and CM4
+dts files were written. Apply those updates to the other files to
+minimise the differences. The change is largely cosmetic, except for
+the PCI "device-type" to "device_type" rename, and the correction of
+the labels on the Pi 400 GPIO expander pins.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-400.dts | 90 ++++--------------------
+ arch/arm/boot/dts/bcm2711-rpi-cm4.dts | 98 ++++++---------------------
+ 2 files changed, 36 insertions(+), 152 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2711-rpi-400.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-400.dts
+@@ -1,9 +1,8 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /dts-v1/;
+ #include "bcm2711.dtsi"
+-#include "bcm2835-rpi.dtsi"
+-
+-#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
++#include "bcm2711-rpi.dtsi"
++//#include "bcm283x-rpi-usb-peripheral.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,400", "brcm,bcm2711";
+@@ -14,19 +13,6 @@
+ 		stdout-path = "serial1:115200n8";
+ 	};
+ 
+-	/* Will be filled by the bootloader */
+-	memory@0 {
+-		device_type = "memory";
+-		reg = <0 0 0>;
+-	};
+-
+-	aliases {
+-		emmc2bus = &emmc2bus;
+-		ethernet0 = &genet;
+-		pcie0 = &pcie0;
+-		blconfig = &blconfig;
+-	};
+-
+ 	leds {
+ 		led-act {
+ 			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+@@ -54,8 +40,8 @@
+ 		regulator-always-on;
+ 		regulator-settling-time-us = <5000>;
+ 		gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
+-		states = <1800000 0x1
+-			  3300000 0x0>;
++		states = <1800000 0x1>,
++			 <3300000 0x0>;
+ 		status = "okay";
+ 	};
+ 
+@@ -78,31 +64,15 @@
+ 	status = "okay";
+ };
+ 
+-&firmware {
+-	firmware_clocks: clocks {
+-		compatible = "raspberrypi,firmware-clocks";
+-		#clock-cells = <1>;
+-	};
+-
+-	expgpio: gpio {
+-		compatible = "raspberrypi,firmware-gpio";
+-		gpio-controller;
+-		#gpio-cells = <2>;
+-		gpio-line-names = "BT_ON",
+-				  "WL_ON",
+-				  "PWR_LED_OFF",
+-				  "GLOBAL_RESET",
+-				  "VDD_SD_IO_SEL",
+-				  "CAM_GPIO",
+-				  "SD_PWR_ON",
+-				  "SD_OC_N";
+-		status = "okay";
+-	};
+-
+-	reset: reset {
+-		compatible = "raspberrypi,firmware-reset";
+-		#reset-cells = <1>;
+-	};
++&expgpio {
++	gpio-line-names = "BT_ON",
++			  "WL_ON",
++			  "PWR_LED_OFF",
++			  "GLOBAL_RESET",
++			  "VDD_SD_IO_SEL",
++			  "GLOBAL_SHUTDOWN",
++			  "SD_PWR_ON",
++			  "SHUTDOWN_REQUEST";
+ };
+ 
+ &gpio {
+@@ -179,23 +149,13 @@
+ };
+ 
+ &hdmi0 {
+-	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
+-	clock-names = "hdmi", "bvb", "audio", "cec";
+-	wifi-2.4ghz-coexistence;
+ 	status = "okay";
+ };
+ 
+ &hdmi1 {
+-	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
+-	clock-names = "hdmi", "bvb", "audio", "cec";
+-	wifi-2.4ghz-coexistence;
+ 	status = "okay";
+ };
+ 
+-&hvs {
+-	clocks = <&firmware_clocks 4>;
+-};
+-
+ &pixelvalve0 {
+ 	status = "okay";
+ };
+@@ -218,22 +178,6 @@
+ 	status = "okay";
+ };
+ 
+-&rmem {
+-	/*
+-	 * RPi4's co-processor will copy the board's bootloader configuration
+-	 * into memory for the OS to consume. It'll also update this node with
+-	 * its placement information.
+-	 */
+-	blconfig: nvram@0 {
+-		compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
+-		#address-cells = <1>;
+-		#size-cells = <1>;
+-		reg = <0x0 0x0 0x0>;
+-		no-map;
+-		status = "disabled";
+-	};
+-};
+-
+ /* SDHCI is used to control the SDIO for wireless */
+ &sdhci {
+ 	#address-cells = <1>;
+@@ -274,7 +218,7 @@
+ 
+ &pcie0 {
+ 	pci@0,0 {
+-		device-type = "pci";
++		device_type = "pci";
+ 		#address-cells = <3>;
+ 		#size-cells = <2>;
+ 		ranges;
+@@ -282,7 +226,7 @@
+ 		reg = <0 0 0 0 0>;
+ 
+ 		usb@0,0 {
+-			reg = <0x0 0 0 0 0>;
++			reg = <0 0 0 0 0>;
+ 			resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
+ 		};
+ 	};
+@@ -309,10 +253,6 @@
+ 	status = "okay";
+ };
+ 
+-&vchiq {
+-	interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+-};
+-
+ &vc4 {
+ 	status = "okay";
+ };
+--- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+@@ -1,9 +1,8 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /dts-v1/;
+ #include "bcm2711.dtsi"
+-#include "bcm2835-rpi.dtsi"
+-
+-#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
++#include "bcm2711-rpi.dtsi"
++//#include "bcm283x-rpi-usb-peripheral.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,4-compute-module", "brcm,bcm2711";
+@@ -14,19 +13,6 @@
+ 		stdout-path = "serial1:115200n8";
+ 	};
+ 
+-	/* Will be filled by the bootloader */
+-	memory@0 {
+-		device_type = "memory";
+-		reg = <0 0 0>;
+-	};
+-
+-	aliases {
+-		emmc2bus = &emmc2bus;
+-		ethernet0 = &genet;
+-		pcie0 = &pcie0;
+-		blconfig = &blconfig;
+-	};
+-
+ 	leds {
+ 		led-act {
+ 			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+@@ -54,8 +40,8 @@
+ 		regulator-always-on;
+ 		regulator-settling-time-us = <5000>;
+ 		gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
+-		states = <1800000 0x1
+-			  3300000 0x0>;
++		states = <1800000 0x1>,
++			 <3300000 0x0>;
+ 		status = "okay";
+ 	};
+ 
+@@ -78,42 +64,26 @@
+ 	status = "okay";
+ };
+ 
+-&firmware {
+-	firmware_clocks: clocks {
+-		compatible = "raspberrypi,firmware-clocks";
+-		#clock-cells = <1>;
+-	};
+-
+-	expgpio: gpio {
+-		compatible = "raspberrypi,firmware-gpio";
+-		gpio-controller;
+-		#gpio-cells = <2>;
+-		gpio-line-names = "BT_ON",
+-				  "WL_ON",
+-				  "PWR_LED_OFF",
+-				  "ANT1",
+-				  "VDD_SD_IO_SEL",
+-				  "CAM_GPIO",
+-				  "SD_PWR_ON",
+-				  "ANT2";
+-		status = "okay";
+-
+-		ant1: ant1 {
+-			gpio-hog;
+-			gpios = <3 GPIO_ACTIVE_HIGH>;
+-			output-high;
+-		};
+-
+-		ant2: ant2 {
+-			gpio-hog;
+-			gpios = <7 GPIO_ACTIVE_HIGH>;
+-			output-low;
+-		};
+-	};
+-
+-	reset: reset {
+-		compatible = "raspberrypi,firmware-reset";
+-		#reset-cells = <1>;
++&expgpio {
++	gpio-line-names = "BT_ON",
++			  "WL_ON",
++			  "PWR_LED_OFF",
++			  "ANT1",
++			  "VDD_SD_IO_SEL",
++			  "CAM_GPIO",
++			  "SD_PWR_ON",
++			  "ANT2";
++
++	ant1: ant1 {
++		gpio-hog;
++		gpios = <3 GPIO_ACTIVE_HIGH>;
++		output-high;
++	};
++
++	ant2: ant2 {
++		gpio-hog;
++		gpios = <7 GPIO_ACTIVE_HIGH>;
++		output-low;
+ 	};
+ };
+ 
+@@ -191,23 +161,13 @@
+ };
+ 
+ &hdmi0 {
+-	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
+-	clock-names = "hdmi", "bvb", "audio", "cec";
+-	wifi-2.4ghz-coexistence;
+ 	status = "okay";
+ };
+ 
+ &hdmi1 {
+-	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
+-	clock-names = "hdmi", "bvb", "audio", "cec";
+-	wifi-2.4ghz-coexistence;
+ 	status = "okay";
+ };
+ 
+-&hvs {
+-	clocks = <&firmware_clocks 4>;
+-};
+-
+ &pixelvalve0 {
+ 	status = "okay";
+ };
+@@ -230,22 +190,6 @@
+ 	status = "okay";
+ };
+ 
+-&rmem {
+-	/*
+-	 * RPi4's co-processor will copy the board's bootloader configuration
+-	 * into memory for the OS to consume. It'll also update this node with
+-	 * its placement information.
+-	 */
+-	blconfig: nvram@0 {
+-		compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
+-		#address-cells = <1>;
+-		#size-cells = <1>;
+-		reg = <0x0 0x0 0x0>;
+-		no-map;
+-		status = "disabled";
+-	};
+-};
+-
+ /* SDHCI is used to control the SDIO for wireless */
+ &sdhci {
+ 	#address-cells = <1>;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0578-spi-spidev-Restore-loading-from-Device-Tree.patch b/target/linux/bcm27xx/patches-5.15/950-0578-spi-spidev-Restore-loading-from-Device-Tree.patch
new file mode 100644
index 0000000000..8f90c6e6ae
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0578-spi-spidev-Restore-loading-from-Device-Tree.patch
@@ -0,0 +1,25 @@
+From 98ffb29a71923d14a79b3b8ef4d2540e6c6a6363 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 29 Nov 2021 12:14:49 +0000
+Subject: [PATCH] spi: spidev: Restore loading from Device Tree
+
+As happens occasionally, an upstream change has once again prevented
+spidev from being loaded via Device Tree. We now need "spidev" to be
+included in the new spi_device_id list, otherwise although the
+spidev driver gets loaded no /dev/spidev*.* entries will appear.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/spi/spidev.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/spi/spidev.c
++++ b/drivers/spi/spidev.c
+@@ -669,6 +669,7 @@ static const struct file_operations spid
+ static struct class *spidev_class;
+ 
+ static const struct spi_device_id spidev_spi_ids[] = {
++	{ .name = "spidev" },
+ 	{ .name = "dh2228fv" },
+ 	{ .name = "ltc2488" },
+ 	{ .name = "sx1301" },
diff --git a/target/linux/bcm27xx/patches-5.15/950-0579-drm-vc4-Add-support-for-composite-syncs-to-vc4_dpi.patch b/target/linux/bcm27xx/patches-5.15/950-0579-drm-vc4-Add-support-for-composite-syncs-to-vc4_dpi.patch
new file mode 100644
index 0000000000..9d815d39b5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0579-drm-vc4-Add-support-for-composite-syncs-to-vc4_dpi.patch
@@ -0,0 +1,56 @@
+From bbd8dd64c1083232f3da8e097207a5b539ab91c9 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Nov 2021 14:45:33 +0000
+Subject: [PATCH] drm/vc4: Add support for composite syncs to vc4_dpi
+
+The hardware can combine H&V syncs onto the output enable line
+as composite syncs, so add the relevant configuration to do that.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dpi.c | 25 ++++++++++++++++---------
+ 1 file changed, 16 insertions(+), 9 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dpi.c
++++ b/drivers/gpu/drm/vc4/vc4_dpi.c
+@@ -131,7 +131,7 @@ static void vc4_dpi_encoder_enable(struc
+ 	struct vc4_dpi *dpi = vc4_encoder->dpi;
+ 	struct drm_connector_list_iter conn_iter;
+ 	struct drm_connector *connector = NULL, *connector_scan;
+-	u32 dpi_c = DPI_ENABLE | DPI_OUTPUT_ENABLE_MODE;
++	u32 dpi_c = DPI_ENABLE;
+ 	int ret;
+ 
+ 	/* Look up the connector attached to DPI so we can get the
+@@ -192,15 +192,22 @@ static void vc4_dpi_encoder_enable(struc
+ 		dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1, DPI_FORMAT);
+ 	}
+ 
+-	if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+-		dpi_c |= DPI_HSYNC_INVERT;
+-	else if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
+-		dpi_c |= DPI_HSYNC_DISABLE;
+-
+-	if (mode->flags & DRM_MODE_FLAG_NVSYNC)
+-		dpi_c |= DPI_VSYNC_INVERT;
+-	else if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+-		dpi_c |= DPI_VSYNC_DISABLE;
++	if (mode->flags & DRM_MODE_FLAG_CSYNC) {
++		if (mode->flags & DRM_MODE_FLAG_NCSYNC)
++			dpi_c |= DPI_OUTPUT_ENABLE_INVERT;
++	} else {
++		dpi_c |= DPI_OUTPUT_ENABLE_MODE;
++
++		if (mode->flags & DRM_MODE_FLAG_NHSYNC)
++			dpi_c |= DPI_HSYNC_INVERT;
++		else if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
++			dpi_c |= DPI_HSYNC_DISABLE;
++
++		if (mode->flags & DRM_MODE_FLAG_NVSYNC)
++			dpi_c |= DPI_VSYNC_INVERT;
++		else if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
++			dpi_c |= DPI_VSYNC_DISABLE;
++	}
+ 
+ 	DPI_WRITE(DPI_C, dpi_c);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0580-drm-vc4-Ensure-vc4_hdmi-doesn-t-use-2711-HPD-registe.patch b/target/linux/bcm27xx/patches-5.15/950-0580-drm-vc4-Ensure-vc4_hdmi-doesn-t-use-2711-HPD-registe.patch
new file mode 100644
index 0000000000..c542d240a4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0580-drm-vc4-Ensure-vc4_hdmi-doesn-t-use-2711-HPD-registe.patch
@@ -0,0 +1,85 @@
+From 3542a39c5655242ba89bb4f51e9237cbb7e8cf09 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 19 Nov 2021 16:16:40 +0000
+Subject: [PATCH] drm/vc4: Ensure vc4_hdmi doesn't use 2711 HPD
+ registers on Pi0-3
+
+The existing logic was flawed in that it could try reading the
+2711 specific registers for HPD on a CM1/3 where the HPD GPIO
+hadn't been defined in DT.
+
+Ensure we don't do the 2711 register read on invalid hardware,
+and then
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 24 ++++++++++++++++--------
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  3 +++
+ 2 files changed, 19 insertions(+), 8 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -205,14 +205,8 @@ vc4_hdmi_connector_detect(struct drm_con
+ 		if (gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio))
+ 			connected = true;
+ 	} else {
+-		unsigned long flags;
+-		u32 hotplug;
+-
+-		spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+-		hotplug = HDMI_READ(HDMI_HOTPLUG);
+-		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+-
+-		if (hotplug & VC4_HDMI_HOTPLUG_CONNECTED)
++		if (vc4_hdmi->variant->hp_detect &&
++		    vc4_hdmi->variant->hp_detect(vc4_hdmi))
+ 			connected = true;
+ 	}
+ 
+@@ -1354,6 +1348,18 @@ static u32 vc5_hdmi_channel_map(struct v
+ 	return channel_map;
+ }
+ 
++static bool vc5_hdmi_hp_detect(struct vc4_hdmi *vc4_hdmi)
++{
++	unsigned long flags;
++	u32 hotplug;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++	hotplug = HDMI_READ(HDMI_HOTPLUG);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
++	return !!(hotplug & VC4_HDMI_HOTPLUG_CONNECTED);
++}
++
+ /* HDMI audio codec callbacks */
+ static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi,
+ 					 unsigned int samplerate)
+@@ -2778,6 +2784,7 @@ static const struct vc4_hdmi_variant bcm
+ 	.phy_rng_disable	= vc5_hdmi_phy_rng_disable,
+ 	.channel_map		= vc5_hdmi_channel_map,
+ 	.supports_hdr		= true,
++	.hp_detect		= vc5_hdmi_hp_detect,
+ };
+ 
+ static const struct vc4_hdmi_variant bcm2711_hdmi1_variant = {
+@@ -2806,6 +2813,7 @@ static const struct vc4_hdmi_variant bcm
+ 	.phy_rng_disable	= vc5_hdmi_phy_rng_disable,
+ 	.channel_map		= vc5_hdmi_channel_map,
+ 	.supports_hdr		= true,
++	.hp_detect		= vc5_hdmi_hp_detect,
+ };
+ 
+ static const struct of_device_id vc4_hdmi_dt_match[] = {
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -102,6 +102,9 @@ struct vc4_hdmi_variant {
+ 
+ 	/* Enables HDR metadata */
+ 	bool supports_hdr;
++
++	/* Callback for hardware specific hotplug detect */
++	bool (*hp_detect)(struct vc4_hdmi *vc4_hdmi);
+ };
+ 
+ /* HDMI audio information */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch b/target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch
new file mode 100644
index 0000000000..c011caebe7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch
@@ -0,0 +1,63 @@
+From 7b658b57d05317656fec750eca1094049de41c76 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 26 Nov 2021 14:37:40 +0000
+Subject: [PATCH] input: edt-ft5x06: Handle unreliable TOUCH_UP events
+
+The ft5x06 is unreliable in sending touch up events, so some
+touch IDs can become stuck in the detected state.
+
+Ensure that IDs that are unreported by the controller are
+released.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/input/touchscreen/edt-ft5x06.c | 21 ++++++++++++++++++++-
+ 1 file changed, 20 insertions(+), 1 deletion(-)
+
+--- a/drivers/input/touchscreen/edt-ft5x06.c
++++ b/drivers/input/touchscreen/edt-ft5x06.c
+@@ -127,6 +127,7 @@ struct edt_ft5x06_ts_data {
+ 	int offset_y;
+ 	int report_rate;
+ 	int max_support_points;
++	unsigned int known_ids;
+ 
+ 	char name[EDT_NAME_LEN];
+ 
+@@ -201,6 +202,9 @@ static irqreturn_t edt_ft5x06_ts_isr(int
+ 	int i, type, x, y, id;
+ 	int offset, tplen, datalen, crclen;
+ 	int error;
++	unsigned int active_ids = 0, known_ids = tsdata->known_ids;
++	long released_ids;
++	int b = 0;
+ 
+ 	switch (tsdata->version) {
+ 	case EDT_M06:
+@@ -272,10 +276,25 @@ static irqreturn_t edt_ft5x06_ts_isr(int
+ 
+ 		input_mt_slot(tsdata->input, id);
+ 		if (input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER,
+-					       type != TOUCH_EVENT_UP))
++					       type != TOUCH_EVENT_UP)) {
+ 			touchscreen_report_pos(tsdata->input, &tsdata->prop,
+ 					       x, y, true);
++			active_ids |= BIT(id);
++		} else {
++			known_ids &= ~BIT(id);
++		}
++	}
++
++	/* One issue with the device is the TOUCH_UP message is not always
++	 * returned. Instead track which ids we know about and report when they
++	 * are no longer updated
++	 */
++	released_ids = known_ids & ~active_ids;
++	for_each_set_bit_from(b, &released_ids, tsdata->max_support_points) {
++		input_mt_slot(tsdata->input, b);
++		input_mt_report_slot_inactive(tsdata->input);
+ 	}
++	tsdata->known_ids = active_ids;
+ 
+ 	input_mt_report_pointer_emulation(tsdata->input, true);
+ 	input_sync(tsdata->input);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0582-dtoverlays-Use-edt-ft5506-for-10-points-instead-of-e.patch b/target/linux/bcm27xx/patches-5.15/950-0582-dtoverlays-Use-edt-ft5506-for-10-points-instead-of-e.patch
new file mode 100644
index 0000000000..f2b9a32036
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0582-dtoverlays-Use-edt-ft5506-for-10-points-instead-of-e.patch
@@ -0,0 +1,30 @@
+From 8bf783e4a473fdd21efe7ba6a60c9b42a8d1bcb2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 26 Nov 2021 16:56:37 +0000
+Subject: [PATCH] dtoverlays: Use edt-ft5506 for 10 points, instead of
+ edt-ft5x06
+
+Whilst all the datasheets describe FT5x06 as supporting "up to
+10 points of absolution X and Y coordinates", the driver
+implementation for the compatible string "edt,edt-ft5x06" only
+allows for 5.
+
+Switch to the "edt,edt-ft5506" compatible string which allows for
+10 points with no other differences.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/edt-ft5406.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
++++ b/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
+@@ -28,7 +28,7 @@
+ 			#address-cells = <1>;
+ 			#size-cells = <0>;
+ 			ft5406: ts@38 {
+-				compatible = "edt,edt-ft5406";
++				compatible = "edt,edt-ft5506";
+ 				reg = <0x38>;
+ 
+ 				touchscreen-size-x = < 800 >;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0583-staging-bcm2835-codec-bytesperline-for-YUV420-YVU420.patch b/target/linux/bcm27xx/patches-5.15/950-0583-staging-bcm2835-codec-bytesperline-for-YUV420-YVU420.patch
new file mode 100644
index 0000000000..7b5529194f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0583-staging-bcm2835-codec-bytesperline-for-YUV420-YVU420.patch
@@ -0,0 +1,42 @@
+From 18277c9cdbb9d3595d442c97ee80b2c10303aeb9 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 26 Nov 2021 16:46:22 +0000
+Subject: [PATCH] staging/bcm2835-codec: bytesperline for YUV420/YVU420
+ needs to be 64
+
+Matching https://github.com/raspberrypi/linux/pull/4419, the ISP
+block (which is also used on the input of the encoder, and output
+of the decoder) needs the base address of all planes to be aligned
+to multiples of 32. This includes the chroma planes of YUV420 and
+YVU420.
+If the height is only a multiple of 2 (not 4), then you get an odd
+number of lines in the second plane, which means the 3rd plane
+starts at a multiple of bytesperline/2.
+
+Set the minimum bytesperline alignment to 64 for those formats
+so that the plane alignment is always right.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c  | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -157,14 +157,14 @@ static const struct bcm2835_codec_fmt su
+ 		/* YUV formats */
+ 		.fourcc			= V4L2_PIX_FMT_YUV420,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= 64,
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_I420,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_YVU420,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= 64,
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_YV12,
+ 		.size_multiplier_x2	= 3,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0584-media-rpivid-remove-min_buffers_needed-from-src-queu.patch b/target/linux/bcm27xx/patches-5.15/950-0584-media-rpivid-remove-min_buffers_needed-from-src-queu.patch
new file mode 100644
index 0000000000..b7cf2c9a67
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0584-media-rpivid-remove-min_buffers_needed-from-src-queu.patch
@@ -0,0 +1,25 @@
+From c18a8b7b527e97391c212a18906ab07fb5f2f476 Mon Sep 17 00:00:00 2001
+From: John Cox <jc@kynesim.co.uk>
+Date: Mon, 29 Nov 2021 16:39:35 +0000
+Subject: [PATCH] media: rpivid: remove min_buffers_needed from src
+ queue
+
+Remove min_buffers_needed=1 from src queue init. Src buffers are bound
+to media requests therefore this setting is not needed and generates
+a WARN in kernel 5.16.
+
+Signed-off-by: John Cox <jc@kynesim.co.uk>
+---
+ drivers/staging/media/rpivid/rpivid_video.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -680,7 +680,6 @@ int rpivid_queue_init(void *priv, struct
+ 	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+ 	src_vq->drv_priv = ctx;
+ 	src_vq->buf_struct_size = sizeof(struct rpivid_buffer);
+-	src_vq->min_buffers_needed = 1;
+ 	src_vq->ops = &rpivid_qops;
+ 	src_vq->mem_ops = &vb2_dma_contig_memops;
+ 	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0585-staging-bcm2835-codec-Allow-a-different-stride-align.patch b/target/linux/bcm27xx/patches-5.15/950-0585-staging-bcm2835-codec-Allow-a-different-stride-align.patch
new file mode 100644
index 0000000000..befbc0f96a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0585-staging-bcm2835-codec-Allow-a-different-stride-align.patch
@@ -0,0 +1,590 @@
+From 9d12ccfea8cdc6d1dbb796a3023e8c8297a4465e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 29 Nov 2021 19:11:29 +0000
+Subject: [PATCH] staging/bcm2835-codec: Allow a different stride
+ alignment per role
+
+Deinterlace and decode aren't affected in the same way as encode
+and ISP by the alignment requirement on 3 plane YUV420.
+Decode would be affected, but it always aligns the height up to
+a macroblock, and uses the selection API to reflect that.
+
+Add in the facility to set the bytesperline alignment per role.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 135 ++++++++++--------
+ 1 file changed, 74 insertions(+), 61 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -88,6 +88,7 @@ enum bcm2835_codec_role {
+ 	ENCODE,
+ 	ISP,
+ 	DEINTERLACE,
++	NUM_ROLES
+ };
+ 
+ static const char * const roles[] = {
+@@ -145,7 +146,7 @@ static const char * const components[] =
+ struct bcm2835_codec_fmt {
+ 	u32	fourcc;
+ 	int	depth;
+-	int	bytesperline_align;
++	u8	bytesperline_align[NUM_ROLES];
+ 	u32	flags;
+ 	u32	mmal_fmt;
+ 	int	size_multiplier_x2;
+@@ -157,63 +158,63 @@ static const struct bcm2835_codec_fmt su
+ 		/* YUV formats */
+ 		.fourcc			= V4L2_PIX_FMT_YUV420,
+ 		.depth			= 8,
+-		.bytesperline_align	= 64,
++		.bytesperline_align	= { 32, 64, 64, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_I420,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_YVU420,
+ 		.depth			= 8,
+-		.bytesperline_align	= 64,
++		.bytesperline_align	= { 32, 64, 64, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_YV12,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_NV12,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_NV12,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_NV21,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_NV21,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_RGB565,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_RGB16,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_YUYV,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_YUYV,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_UYVY,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_UYVY,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_YVYU,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_YVYU,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_VYUY,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_VYUY,
+ 		.size_multiplier_x2	= 2,
+@@ -221,21 +222,21 @@ static const struct bcm2835_codec_fmt su
+ 		/* RGB formats */
+ 		.fourcc			= V4L2_PIX_FMT_RGB24,
+ 		.depth			= 24,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_RGB24,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_BGR24,
+ 		.depth			= 24,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BGR24,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_BGR32,
+ 		.depth			= 32,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BGRA,
+ 		.size_multiplier_x2	= 2,
+@@ -244,7 +245,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 8 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB8,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB8,
+ 		.size_multiplier_x2	= 2,
+@@ -252,7 +253,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR8,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR8,
+ 		.size_multiplier_x2	= 2,
+@@ -260,7 +261,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG8,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG8,
+ 		.size_multiplier_x2	= 2,
+@@ -268,7 +269,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG8,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG8,
+ 		.size_multiplier_x2	= 2,
+@@ -277,7 +278,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB10P,
+ 		.size_multiplier_x2	= 2,
+@@ -285,7 +286,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR10P,
+ 		.size_multiplier_x2	= 2,
+@@ -293,7 +294,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG10P,
+ 		.size_multiplier_x2	= 2,
+@@ -301,7 +302,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG10P,
+ 		.size_multiplier_x2	= 2,
+@@ -310,7 +311,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB12P,
+ 		.size_multiplier_x2	= 2,
+@@ -318,7 +319,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR12P,
+ 		.size_multiplier_x2	= 2,
+@@ -326,7 +327,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG12P,
+ 		.size_multiplier_x2	= 2,
+@@ -334,7 +335,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG12P,
+ 		.size_multiplier_x2	= 2,
+@@ -343,7 +344,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB14P,
+ 		.size_multiplier_x2	= 2,
+@@ -351,7 +352,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR14P,
+ 		.size_multiplier_x2	= 2,
+@@ -360,7 +361,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG14P,
+ 		.size_multiplier_x2	= 2,
+@@ -368,7 +369,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG14P,
+ 		.size_multiplier_x2	= 2,
+@@ -377,7 +378,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 16 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB16,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB16,
+ 		.size_multiplier_x2	= 2,
+@@ -385,7 +386,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR16,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR16,
+ 		.size_multiplier_x2	= 2,
+@@ -393,7 +394,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG16,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG16,
+ 		.size_multiplier_x2	= 2,
+@@ -401,7 +402,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG16,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG16,
+ 		.size_multiplier_x2	= 2,
+@@ -411,7 +412,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB10,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB10,
+ 		.size_multiplier_x2	= 2,
+@@ -419,7 +420,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR10,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR10,
+ 		.size_multiplier_x2	= 2,
+@@ -427,7 +428,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG10,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG10,
+ 		.size_multiplier_x2	= 2,
+@@ -435,7 +436,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG10,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG10,
+ 		.size_multiplier_x2	= 2,
+@@ -444,7 +445,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB12,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB12,
+ 		.size_multiplier_x2	= 2,
+@@ -452,7 +453,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR12,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR12,
+ 		.size_multiplier_x2	= 2,
+@@ -460,7 +461,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG12,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG12,
+ 		.size_multiplier_x2	= 2,
+@@ -468,7 +469,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG12,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG12,
+ 		.size_multiplier_x2	= 2,
+@@ -477,7 +478,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB14,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB14,
+ 		.size_multiplier_x2	= 2,
+@@ -485,7 +486,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR14,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR14,
+ 		.size_multiplier_x2	= 2,
+@@ -493,7 +494,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG14,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG14,
+ 		.size_multiplier_x2	= 2,
+@@ -501,7 +502,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG14,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG14,
+ 		.size_multiplier_x2	= 2,
+@@ -511,7 +512,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 8 bit */
+ 		.fourcc			= V4L2_PIX_FMT_GREY,
+ 		.depth			= 8,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_GREY,
+ 		.size_multiplier_x2	= 2,
+@@ -519,7 +520,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y10P,
+ 		.size_multiplier_x2	= 2,
+@@ -527,7 +528,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y12P,
+ 		.size_multiplier_x2	= 2,
+@@ -535,7 +536,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y14P,
+ 		.size_multiplier_x2	= 2,
+@@ -543,7 +544,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 16 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y16,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y16,
+ 		.size_multiplier_x2	= 2,
+@@ -551,7 +552,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit as 16bpp */
+ 		.fourcc			= V4L2_PIX_FMT_Y10,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y10,
+ 		.size_multiplier_x2	= 2,
+@@ -559,7 +560,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit as 16bpp */
+ 		.fourcc			= V4L2_PIX_FMT_Y12,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y12,
+ 		.size_multiplier_x2	= 2,
+@@ -567,7 +568,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit as 16bpp */
+ 		.fourcc			= V4L2_PIX_FMT_Y14,
+ 		.depth			= 16,
+-		.bytesperline_align	= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y14,
+ 		.size_multiplier_x2	= 2,
+@@ -840,9 +841,10 @@ static inline unsigned int get_sizeimage
+ }
+ 
+ static inline unsigned int get_bytesperline(int width,
+-					    struct bcm2835_codec_fmt *fmt)
++					    struct bcm2835_codec_fmt *fmt,
++					    enum bcm2835_codec_role role)
+ {
+-	return ALIGN((width * fmt->depth) >> 3, fmt->bytesperline_align);
++	return ALIGN((width * fmt->depth) >> 3, fmt->bytesperline_align[role]);
+ }
+ 
+ static void setup_mmal_port_format(struct bcm2835_codec_ctx *ctx,
+@@ -1040,7 +1042,7 @@ static void handle_fmt_changed(struct bc
+ 	 */
+ 	q_data->selection_set = true;
+ 	q_data->bytesperline = get_bytesperline(format->es.video.width,
+-						q_data->fmt);
++						q_data->fmt, ctx->dev->role);
+ 
+ 	q_data->height = format->es.video.height;
+ 	q_data->sizeimage = format->buffer_size_min;
+@@ -1422,11 +1424,13 @@ static int vidioc_try_fmt(struct bcm2835
+ 			f->fmt.pix_mp.height = ALIGN(f->fmt.pix_mp.height, 16);
+ 	}
+ 	f->fmt.pix_mp.num_planes = 1;
+-	min_bytesperline = get_bytesperline(f->fmt.pix_mp.width, fmt);
++	min_bytesperline = get_bytesperline(f->fmt.pix_mp.width, fmt,
++					    ctx->dev->role);
+ 	if (f->fmt.pix_mp.plane_fmt[0].bytesperline < min_bytesperline)
+ 		f->fmt.pix_mp.plane_fmt[0].bytesperline = min_bytesperline;
+ 	f->fmt.pix_mp.plane_fmt[0].bytesperline =
+-		ALIGN(f->fmt.pix_mp.plane_fmt[0].bytesperline, fmt->bytesperline_align);
++		ALIGN(f->fmt.pix_mp.plane_fmt[0].bytesperline,
++		      fmt->bytesperline_align[ctx->dev->role]);
+ 
+ 	sizeimage = get_sizeimage(f->fmt.pix_mp.plane_fmt[0].bytesperline,
+ 				  f->fmt.pix_mp.width, f->fmt.pix_mp.height,
+@@ -1581,7 +1585,8 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 		q_data_dst->height = ALIGN(q_data->crop_height, 16);
+ 
+ 		q_data_dst->bytesperline =
+-			get_bytesperline(f->fmt.pix_mp.width, q_data_dst->fmt);
++			get_bytesperline(f->fmt.pix_mp.width, q_data_dst->fmt,
++					 ctx->dev->role);
+ 		q_data_dst->sizeimage = get_sizeimage(q_data_dst->bytesperline,
+ 						      q_data_dst->crop_width,
+ 						      q_data_dst->height,
+@@ -1810,6 +1815,8 @@ static int vidioc_g_selection(struct fil
+ 			}
+ 		}
+ 		break;
++	case NUM_ROLES:
++		break;
+ 	}
+ 
+ 	return 0;
+@@ -1920,6 +1927,8 @@ static int vidioc_s_selection(struct fil
+ 			}
+ 			break;
+ 		}
++	case NUM_ROLES:
++		break;
+ 	}
+ 
+ 	return 0;
+@@ -3087,7 +3096,8 @@ static int bcm2835_codec_open(struct fil
+ 	ctx->q_data[V4L2_M2M_SRC].height = DEFAULT_HEIGHT;
+ 	ctx->q_data[V4L2_M2M_SRC].bytesperline =
+ 			get_bytesperline(DEFAULT_WIDTH,
+-					 ctx->q_data[V4L2_M2M_SRC].fmt);
++					 ctx->q_data[V4L2_M2M_SRC].fmt,
++					 dev->role);
+ 	ctx->q_data[V4L2_M2M_SRC].sizeimage =
+ 		get_sizeimage(ctx->q_data[V4L2_M2M_SRC].bytesperline,
+ 			      ctx->q_data[V4L2_M2M_SRC].crop_width,
+@@ -3100,7 +3110,8 @@ static int bcm2835_codec_open(struct fil
+ 	ctx->q_data[V4L2_M2M_DST].height = DEFAULT_HEIGHT;
+ 	ctx->q_data[V4L2_M2M_DST].bytesperline =
+ 			get_bytesperline(DEFAULT_WIDTH,
+-					 ctx->q_data[V4L2_M2M_DST].fmt);
++					 ctx->q_data[V4L2_M2M_DST].fmt,
++					 dev->role);
+ 	ctx->q_data[V4L2_M2M_DST].sizeimage =
+ 		get_sizeimage(ctx->q_data[V4L2_M2M_DST].bytesperline,
+ 			      ctx->q_data[V4L2_M2M_DST].crop_width,
+@@ -3230,6 +3241,8 @@ static int bcm2835_codec_open(struct fil
+ 		v4l2_ctrl_handler_init(hdl, 0);
+ 	}
+ 	break;
++	case NUM_ROLES:
++	break;
+ 	}
+ 
+ 	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0586-drivers-bcm2835_unicam-Add-logging-message-when-a-fr.patch b/target/linux/bcm27xx/patches-5.15/950-0586-drivers-bcm2835_unicam-Add-logging-message-when-a-fr.patch
new file mode 100644
index 0000000000..cdb62f99d7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0586-drivers-bcm2835_unicam-Add-logging-message-when-a-fr.patch
@@ -0,0 +1,26 @@
+From 1b61bce3ec65be520e45cf29431650d23a7b5d33 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 30 Nov 2021 10:39:41 +0000
+Subject: [PATCH] drivers: bcm2835_unicam: Add logging message when a
+ frame is dropped.
+
+If a dummy buffer is still active on a frame start, it indicates that this frame
+will be dropped. The explicit logging helps users identify performance issues.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -952,6 +952,9 @@ static irqreturn_t unicam_isr(int irq, v
+ 			if (unicam->node[i].cur_frm)
+ 				unicam->node[i].cur_frm->vb.vb2_buf.timestamp =
+ 								ts;
++			else
++				unicam_dbg(2, unicam, "ISR: [%d] Dropping frame, buffer not available at FS\n",
++					   i);
+ 			/*
+ 			 * Set the next frame output to go to a dummy frame
+ 			 * if we have not managed to obtain another frame
diff --git a/target/linux/bcm27xx/patches-5.15/950-0587-regulator-rpi-panel-attiny-Don-t-read-the-LCD-power-.patch b/target/linux/bcm27xx/patches-5.15/950-0587-regulator-rpi-panel-attiny-Don-t-read-the-LCD-power-.patch
new file mode 100644
index 0000000000..95bbfe15b8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0587-regulator-rpi-panel-attiny-Don-t-read-the-LCD-power-.patch
@@ -0,0 +1,46 @@
+From 76035ed0bd7fcc2c0af5a038139b50231b95fa37 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 29 Nov 2021 18:31:37 +0000
+Subject: [PATCH] regulator/rpi-panel-attiny: Don't read the LCD power
+ status
+
+The I2C to the Atmel is very fussy, and locks up easily on
+Pi0-3 particularly on reads.
+
+The LCD power status is controlled solely by this driver, so
+rather than reading it back from the Atmel, use the cached
+status last set.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/regulator/rpi-panel-attiny-regulator.c | 18 +-----------------
+ 1 file changed, 1 insertion(+), 17 deletions(-)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -144,24 +144,8 @@ static int attiny_lcd_power_disable(stru
+ static int attiny_lcd_power_is_enabled(struct regulator_dev *rdev)
+ {
+ 	struct attiny_lcd *state = rdev_get_drvdata(rdev);
+-	unsigned int data;
+-	int ret, i;
+ 
+-	mutex_lock(&state->lock);
+-
+-	for (i = 0; i < 10; i++) {
+-		ret = regmap_read(rdev->regmap, REG_PORTC, &data);
+-		if (!ret)
+-			break;
+-		usleep_range(10000, 12000);
+-	}
+-
+-	mutex_unlock(&state->lock);
+-
+-	if (ret < 0)
+-		return ret;
+-
+-	return data & PC_RST_BRIDGE_N;
++	return state->port_states[REG_PORTC - REG_PORTA] & PC_RST_BRIDGE_N;
+ }
+ 
+ static const struct regulator_init_data attiny_regulator_default = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0588-regulator-rpi-panel-attiny-Use-two-transactions-for-.patch b/target/linux/bcm27xx/patches-5.15/950-0588-regulator-rpi-panel-attiny-Use-two-transactions-for-.patch
new file mode 100644
index 0000000000..a40898bfda
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0588-regulator-rpi-panel-attiny-Use-two-transactions-for-.patch
@@ -0,0 +1,68 @@
+From de0ad7df43a7399f9c09394b35d74bc75ebc60a4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Nov 2021 14:50:10 +0000
+Subject: [PATCH] regulator/rpi-panel-attiny: Use two transactions for
+ I2C read
+
+The I2C to the Atmel is very fussy, and locks up easily on
+Pi0-3 particularly on reads.
+If running at 100kHz on Pi3, reading the ID register generally
+locks up the Atmel, but splitting the register select write and
+read into two transactions is reliable.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../regulator/rpi-panel-attiny-regulator.c    | 35 ++++++++++++++++++-
+ 1 file changed, 34 insertions(+), 1 deletion(-)
+
+--- a/drivers/regulator/rpi-panel-attiny-regulator.c
++++ b/drivers/regulator/rpi-panel-attiny-regulator.c
+@@ -234,6 +234,39 @@ static void attiny_gpio_set(struct gpio_
+ 	mutex_unlock(&state->lock);
+ }
+ 
++static int attiny_i2c_read(struct i2c_client *client, u8 reg, unsigned int *buf)
++{
++	struct i2c_msg msgs[1];
++	u8 addr_buf[1] = { reg };
++	u8 data_buf[1] = { 0, };
++	int ret;
++
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = ARRAY_SIZE(addr_buf);
++	msgs[0].buf = addr_buf;
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	usleep_range(5000, 10000);
++
++	/* Read data from register */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = I2C_M_RD;
++	msgs[0].len = 1;
++	msgs[0].buf = data_buf;
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	*buf = data_buf[0];
++	return 0;
++}
++
+ /*
+  * I2C driver interface functions
+  */
+@@ -264,7 +297,7 @@ static int attiny_i2c_probe(struct i2c_c
+ 		goto error;
+ 	}
+ 
+-	ret = regmap_read(regmap, REG_ID, &data);
++	ret = attiny_i2c_read(i2c, REG_ID, &data);
+ 	if (ret < 0) {
+ 		dev_err(&i2c->dev, "Failed to read REG_ID reg: %d\n", ret);
+ 		goto error;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch b/target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch
new file mode 100644
index 0000000000..2123041a47
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch
@@ -0,0 +1,44 @@
+From 066255aaae527ace73f85d698a6668a752785d1c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 30 Nov 2021 17:28:50 +0000
+Subject: [PATCH] input: edt-ft5x06: Only look at the number of points
+ reported
+
+Register 0x02 in the FT5x06 is TD_STATUS containing the number
+of valid touch points being reported.
+
+Iterate over that number of points rather than all that are
+supported on the device.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/input/touchscreen/edt-ft5x06.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+--- a/drivers/input/touchscreen/edt-ft5x06.c
++++ b/drivers/input/touchscreen/edt-ft5x06.c
+@@ -205,6 +205,7 @@ static irqreturn_t edt_ft5x06_ts_isr(int
+ 	unsigned int active_ids = 0, known_ids = tsdata->known_ids;
+ 	long released_ids;
+ 	int b = 0;
++	unsigned int num_points;
+ 
+ 	switch (tsdata->version) {
+ 	case EDT_M06:
+@@ -252,9 +253,15 @@ static irqreturn_t edt_ft5x06_ts_isr(int
+ 
+ 		if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen))
+ 			goto out;
++		num_points = tsdata->max_support_points;
++	} else {
++		/* Register 2 is TD_STATUS, containing the number of touch
++		 * points.
++		 */
++		num_points = min(rdbuf[2] & 0xf, tsdata->max_support_points);
+ 	}
+ 
+-	for (i = 0; i < tsdata->max_support_points; i++) {
++	for (i = 0; i < num_points; i++) {
+ 		u8 *buf = &rdbuf[i * tplen + offset];
+ 
+ 		type = buf[0] >> 6;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0590-drm-vc4-Move-HDMI-reset-to-pm_resume.patch b/target/linux/bcm27xx/patches-5.15/950-0590-drm-vc4-Move-HDMI-reset-to-pm_resume.patch
new file mode 100644
index 0000000000..c8bd69cae2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0590-drm-vc4-Move-HDMI-reset-to-pm_resume.patch
@@ -0,0 +1,149 @@
+From 740955399f42caa6406761975656b8aa5b88a39c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 25 Nov 2021 14:46:55 +0000
+Subject: [PATCH] drm/vc4: Move HDMI reset to pm_resume
+
+Pi0-3 have power domains attached to the pm_runtime hooks
+for the HDMI block. Initialisation done in the reset called
+from bind is therefore lost if all users of the domain are
+suspended.
+The VEC shares the same lowest level clock/power gating as
+the HDMI block, so whilst that is enabled the block is never
+actually powered down, but if it isn't enabled then we lose
+the state.
+
+Reset and initialise the HDMI block from pm_resume.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c      | 61 ++++++++++++++++++-----------
+ drivers/gpu/drm/vc4/vc4_hdmi_regs.h |  4 +-
+ 2 files changed, 41 insertions(+), 24 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -2194,7 +2194,6 @@ static int vc4_hdmi_cec_init(struct vc4_
+ 	struct platform_device *pdev = vc4_hdmi->pdev;
+ 	struct device *dev = &pdev->dev;
+ 	unsigned long flags;
+-	u32 value;
+ 	int ret;
+ 
+ 	if (!of_find_property(dev->of_node, "interrupts", NULL)) {
+@@ -2213,15 +2212,6 @@ static int vc4_hdmi_cec_init(struct vc4_
+ 	cec_fill_conn_info_from_drm(&conn_info, &vc4_hdmi->connector);
+ 	cec_s_conn_info(vc4_hdmi->cec_adap, &conn_info);
+ 
+-	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+-	value = HDMI_READ(HDMI_CEC_CNTRL_1);
+-	/* Set the logical address to Unregistered */
+-	value |= VC4_HDMI_CEC_ADDR_MASK;
+-	HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
+-	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+-
+-	vc4_hdmi_cec_update_clk_div(vc4_hdmi);
+-
+ 	if (vc4_hdmi->variant->external_irq_controller) {
+ 		ret = request_threaded_irq(platform_get_irq_byname(pdev, "cec-rx"),
+ 					   vc4_cec_irq_handler_rx_bare,
+@@ -2284,6 +2274,29 @@ static void vc4_hdmi_cec_exit(struct vc4
+ 
+ 	cec_unregister_adapter(vc4_hdmi->cec_adap);
+ }
++
++static int vc4_hdmi_cec_resume(struct vc4_hdmi *vc4_hdmi)
++{
++	unsigned long flags;
++	u32 value;
++
++	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++	value = HDMI_READ(HDMI_CEC_CNTRL_1);
++	/* Set the logical address to Unregistered */
++	value |= VC4_HDMI_CEC_ADDR_MASK;
++	HDMI_WRITE(HDMI_CEC_CNTRL_1, value);
++	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++
++	vc4_hdmi_cec_update_clk_div(vc4_hdmi);
++
++	if (!vc4_hdmi->variant->external_irq_controller) {
++		spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
++		HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, 0xffffffff);
++		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++	}
++
++	return 0;
++}
+ #else
+ static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi)
+ {
+@@ -2292,6 +2305,10 @@ static int vc4_hdmi_cec_init(struct vc4_
+ 
+ static void vc4_hdmi_cec_exit(struct vc4_hdmi *vc4_hdmi) {};
+ 
++static void vc4_hdmi_cec_resume(struct vc4_hdmi *vc4_hdmi)
++{
++	return 0;
++}
+ #endif
+ 
+ static int vc4_hdmi_build_regset(struct vc4_hdmi *vc4_hdmi,
+@@ -2526,6 +2543,15 @@ static int vc4_hdmi_runtime_resume(struc
+ 	if (ret)
+ 		return ret;
+ 
++	if (vc4_hdmi->variant->reset)
++		vc4_hdmi->variant->reset(vc4_hdmi);
++
++	ret = vc4_hdmi_cec_resume(vc4_hdmi);
++	if (ret) {
++		clk_disable_unprepare(vc4_hdmi->hsm_clock);
++		return ret;
++	}
++
+ 	return 0;
+ }
+ 
+@@ -2616,20 +2642,11 @@ static int vc4_hdmi_bind(struct device *
+ 	if (ret)
+ 		goto err_put_ddc;
+ 
+-	/*
+-	 * We need to have the device powered up at this point to call
+-	 * our reset hook and for the CEC init.
+-	 */
+-	ret = vc4_hdmi_runtime_resume(dev);
+-	if (ret)
+-		goto err_put_ddc;
+-
+-	pm_runtime_get_noresume(dev);
+-	pm_runtime_set_active(dev);
+ 	pm_runtime_enable(dev);
+ 
+-	if (vc4_hdmi->variant->reset)
+-		vc4_hdmi->variant->reset(vc4_hdmi);
++	ret = pm_runtime_resume_and_get(dev);
++	if (ret)
++		goto err_put_ddc;
+ 
+ 	if ((of_device_is_compatible(dev->of_node, "brcm,bcm2711-hdmi0") ||
+ 	     of_device_is_compatible(dev->of_node, "brcm,bcm2711-hdmi1")) &&
+--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
+@@ -417,7 +417,7 @@ static inline u32 vc4_hdmi_read(struct v
+ 	const struct vc4_hdmi_variant *variant = hdmi->variant;
+ 	void __iomem *base;
+ 
+-	WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
++	WARN_ON(pm_runtime_status_suspended(&hdmi->pdev->dev));
+ 
+ 	if (reg >= variant->num_registers) {
+ 		dev_warn(&hdmi->pdev->dev,
+@@ -447,7 +447,7 @@ static inline void vc4_hdmi_write(struct
+ 
+ 	lockdep_assert_held(&hdmi->hw_lock);
+ 
+-	WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
++	WARN_ON(pm_runtime_status_suspended(&hdmi->pdev->dev));
+ 
+ 	if (reg >= variant->num_registers) {
+ 		dev_warn(&hdmi->pdev->dev,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0591-clk-bcm-rpi-Add-the-BCM283x-pixel-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0591-clk-bcm-rpi-Add-the-BCM283x-pixel-clock.patch
new file mode 100644
index 0000000000..6b663b96d3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0591-clk-bcm-rpi-Add-the-BCM283x-pixel-clock.patch
@@ -0,0 +1,26 @@
+From 679ce500f576c5c07a18e5bc72347177e4ae3a98 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 13:53:36 +0000
+Subject: [PATCH] clk: bcm: rpi: Add the BCM283x pixel clock.
+
+The clk-bcm2835 handling of the pixel clock does not function
+correctly when the HDMI power domain is disabled.
+
+The firmware supports it correctly, so add it to the
+firmware clock driver.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -276,6 +276,7 @@ static int raspberrypi_discover_clocks(s
+ 		case RPI_FIRMWARE_HEVC_CLK_ID:
+ 		case RPI_FIRMWARE_PIXEL_BVB_CLK_ID:
+ 		case RPI_FIRMWARE_VEC_CLK_ID:
++		case RPI_FIRMWARE_PIXEL_CLK_ID:
+ 			hw = raspberrypi_clk_register(rpi, clks->parent,
+ 						      clks->id);
+ 			if (IS_ERR(hw))
diff --git a/target/linux/bcm27xx/patches-5.15/950-0592-dt-bcm283x-Change-BCM283x-HDMI-to-use-firmware-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0592-dt-bcm283x-Change-BCM283x-HDMI-to-use-firmware-clock.patch
new file mode 100644
index 0000000000..90ee192dab
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0592-dt-bcm283x-Change-BCM283x-HDMI-to-use-firmware-clock.patch
@@ -0,0 +1,29 @@
+From 264b925a428d109529dca836dfb5160dd67f7f08 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 14:11:09 +0000
+Subject: [PATCH] dt: bcm283x: Change BCM283x HDMI to use firmware
+ clock driver
+
+The clk-bcm2835 handling of the pixel clock does not function
+correctly when the HDMI power domain is disabled.
+
+The firmware supports it correctly, and the firmware clock
+driver now supports it, so switch the vc4-hdmi driver to use
+the firmware clock driver.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2835-common.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/bcm2835-common.dtsi
++++ b/arch/arm/boot/dts/bcm2835-common.dtsi
+@@ -128,7 +128,7 @@
+ 				    "hd";
+ 			interrupts = <2 8>, <2 9>;
+ 			ddc = <&i2c2>;
+-			clocks = <&clocks BCM2835_PLLH_PIX>,
++			clocks = <&firmware_clocks 9>,
+ 				 <&clocks BCM2835_CLOCK_HSM>;
+ 			clock-names = "pixel", "hdmi";
+ 			dmas = <&dma (17|(1<<27)|(1<<24))>;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0593-overlays-vc4-kms-v3d-Change-composite-handling.patch b/target/linux/bcm27xx/patches-5.15/950-0593-overlays-vc4-kms-v3d-Change-composite-handling.patch
new file mode 100644
index 0000000000..fdaf141056
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0593-overlays-vc4-kms-v3d-Change-composite-handling.patch
@@ -0,0 +1,58 @@
+From 382089f0bf8b49a6a560a778c54bfddc48cc0e5f Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 11 Nov 2021 13:33:25 +0000
+Subject: [PATCH] overlays: vc4-kms-v3d: Change composite handling
+
+On a Pi 4, enabling composite video disables the HDMI output. As a
+consequence, the composite output is disabled by default. Change the
+vc4-kms-v3d overlay used on older Pis to also disable composite by
+default, replacing the "nocomposite" parameter with a "composite"
+parameter.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README                  | 4 ++--
+ arch/arm/boot/dts/overlays/upstream-overlay.dts    | 2 +-
+ arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts | 4 ++--
+ 3 files changed, 5 insertions(+), 5 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3620,8 +3620,8 @@ Params: cma-512                 CMA is 5
+         cma-default             Use upstream's default value
+         audio                   Enable or disable audio over HDMI (default "on")
+         noaudio                 Disable all HDMI audio (default "off")
+-        nocomposite             Disable the composite video output (default
+-                                "off")
++        composite               Enable the composite output (default "off")
++                                N.B. Disables all other outputs on a Pi 4.
+ 
+ 
+ Name:   vc4-kms-v3d-pi4
+--- a/arch/arm/boot/dts/overlays/upstream-overlay.dts
++++ b/arch/arm/boot/dts/overlays/upstream-overlay.dts
+@@ -1,4 +1,4 @@
+-// redo: ovmerge -c vc4-kms-v3d-overlay.dts,cma-default dwc2-overlay.dts,dr_mode=otg
++// redo: ovmerge -c vc4-kms-v3d-overlay.dts,cma-default,composite dwc2-overlay.dts,dr_mode=otg
+ 
+ /dts-v1/;
+ /plugin/;
+--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
+@@ -89,7 +89,7 @@
+ 
+ 	fragment@11 {
+ 		target = <&vec>;
+-		__overlay__  {
++		__dormant__  {
+ 			status = "okay";
+ 		};
+ 	};
+@@ -118,6 +118,6 @@
+ 	__overrides__ {
+ 		audio   = <0>,"!13";
+ 		noaudio = <0>,"=13";
+-		nocomposite = <0>, "!11";
++		composite = <0>, "=11";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0594-drm-panel-simple-Populate-bpc-when-using-panel-dpi.patch b/target/linux/bcm27xx/patches-5.15/950-0594-drm-panel-simple-Populate-bpc-when-using-panel-dpi.patch
new file mode 100644
index 0000000000..5ddc50a3de
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0594-drm-panel-simple-Populate-bpc-when-using-panel-dpi.patch
@@ -0,0 +1,24 @@
+From 61dcbd9d50cb21d1e56868e01f5ec3c11f5e3176 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 18:10:55 +0000
+Subject: [PATCH] drm/panel-simple: Populate bpc when using panel-dpi
+
+panel-dpi doesn't know the bit depth, so in the same way that
+DPI is guessed for the connector type, guess that it'll be 8bpc.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-simple.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -607,6 +607,8 @@ static int panel_dpi_probe(struct device
+ 
+ 	/* We do not know the connector for the DT node, so guess it */
+ 	desc->connector_type = DRM_MODE_CONNECTOR_DPI;
++	/* Likewise for the bit depth. */
++	desc->bpc = 8;
+ 
+ 	panel->desc = desc;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0595-drm-panel-simple-Allow-the-bus-format-to-be-read-fro.patch b/target/linux/bcm27xx/patches-5.15/950-0595-drm-panel-simple-Allow-the-bus-format-to-be-read-fro.patch
new file mode 100644
index 0000000000..950ed036a7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0595-drm-panel-simple-Allow-the-bus-format-to-be-read-fro.patch
@@ -0,0 +1,28 @@
+From 4870e7a4d23d73761d5f3be18e29d9ff960e292c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 18:16:21 +0000
+Subject: [PATCH] drm/panel-simple: Allow the bus format to be read
+ from DT for panel-dpi
+
+The "panel-dpi" compatible string configures panel from device tree,
+but it doesn't provide any way of configuring the bus format (colour
+representation), nor does it populate it.
+
+Add a DT parameter "bus-format" that allows the MEDIA_BUS_FMT_xxx value
+to be specified from device tree.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-simple.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -598,6 +598,7 @@ static int panel_dpi_probe(struct device
+ 
+ 	of_property_read_u32(np, "width-mm", &desc->size.width);
+ 	of_property_read_u32(np, "height-mm", &desc->size.height);
++	of_property_read_u32(np, "bus-format", &desc->bus_format);
+ 
+ 	/* Extract bus_flags from display_timing */
+ 	bus_flags = 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0596-drm-vc4-dpi-Add-option-for-inverting-pixel-clock-and.patch b/target/linux/bcm27xx/patches-5.15/950-0596-drm-vc4-dpi-Add-option-for-inverting-pixel-clock-and.patch
new file mode 100644
index 0000000000..feea66713a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0596-drm-vc4-dpi-Add-option-for-inverting-pixel-clock-and.patch
@@ -0,0 +1,114 @@
+From e664a91ea54b3488d6c08dd82dac2af1239c3275 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 18:21:46 +0000
+Subject: [PATCH] drm/vc4: dpi: Add option for inverting pixel clock
+ and output enable
+
+DRM provides flags for inverting pixel clock and output enable
+signals, but these were not mapped to the relevant registers.
+
+Add those mappings.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dpi.c | 89 ++++++++++++++++++++---------------
+ 1 file changed, 51 insertions(+), 38 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dpi.c
++++ b/drivers/gpu/drm/vc4/vc4_dpi.c
+@@ -148,45 +148,58 @@ static void vc4_dpi_encoder_enable(struc
+ 	}
+ 	drm_connector_list_iter_end(&conn_iter);
+ 
+-	if (connector && connector->display_info.num_bus_formats) {
+-		u32 bus_format = connector->display_info.bus_formats[0];
++	if (connector) {
++		if (connector->display_info.num_bus_formats) {
++			u32 bus_format = connector->display_info.bus_formats[0];
+ 
+-		switch (bus_format) {
+-		case MEDIA_BUS_FMT_RGB888_1X24:
+-			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB,
+-					       DPI_FORMAT);
+-			break;
+-		case MEDIA_BUS_FMT_BGR888_1X24:
+-			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB,
+-					       DPI_FORMAT);
+-			dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
+-			break;
+-		case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
+-			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
+-					       DPI_FORMAT);
+-			break;
+-		case MEDIA_BUS_FMT_BGR666_1X24_CPADHI:
+-			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
+-					       DPI_FORMAT);
+-			dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
+-			break;
+-		case MEDIA_BUS_FMT_RGB666_1X18:
+-			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
+-					       DPI_FORMAT);
+-			break;
+-		case MEDIA_BUS_FMT_BGR666_1X18:
+-			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
+-					       DPI_FORMAT);
+-			dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER);
+-			break;
+-		case MEDIA_BUS_FMT_RGB565_1X16:
+-			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+-					       DPI_FORMAT);
+-			break;
+-		default:
+-			DRM_ERROR("Unknown media bus format %d\n", bus_format);
+-			break;
++			switch (bus_format) {
++			case MEDIA_BUS_FMT_RGB888_1X24:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB,
++						       DPI_FORMAT);
++				break;
++			case MEDIA_BUS_FMT_BGR888_1X24:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB,
++						       DPI_FORMAT);
++				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR,
++						       DPI_ORDER);
++				break;
++			case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
++						       DPI_FORMAT);
++				break;
++			case MEDIA_BUS_FMT_BGR666_1X24_CPADHI:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
++						       DPI_FORMAT);
++				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR,
++						       DPI_ORDER);
++				break;
++			case MEDIA_BUS_FMT_RGB666_1X18:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
++						       DPI_FORMAT);
++				break;
++			case MEDIA_BUS_FMT_BGR666_1X18:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
++						       DPI_FORMAT);
++				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR,
++						       DPI_ORDER);
++				break;
++			case MEDIA_BUS_FMT_RGB565_1X16:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
++						       DPI_FORMAT);
++				break;
++			default:
++				DRM_ERROR("Unknown media bus format %d\n",
++					  bus_format);
++				break;
++			}
+ 		}
++
++		if (connector->display_info.bus_flags &
++					DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)
++			dpi_c |= DPI_PIXEL_CLK_INVERT;
++
++		if (connector->display_info.bus_flags & DRM_BUS_FLAG_DE_LOW)
++			dpi_c |= DPI_OUTPUT_ENABLE_INVERT;
+ 	} else {
+ 		/* Default to 18bit if no connector found. */
+ 		dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1, DPI_FORMAT);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0597-drm-vc4-dpi-Ensure-a-default-format-is-selected.patch b/target/linux/bcm27xx/patches-5.15/950-0597-drm-vc4-dpi-Ensure-a-default-format-is-selected.patch
new file mode 100644
index 0000000000..7897f8af8b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0597-drm-vc4-dpi-Ensure-a-default-format-is-selected.patch
@@ -0,0 +1,45 @@
+From 368bba37e67b4589b9286b2f68e6487acd5c0f79 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 18:28:29 +0000
+Subject: [PATCH] drm/vc4: dpi: Ensure a default format is selected
+
+In a couple of error/incomplete configuration cases, the
+DPI_FORMAT bits wouldn't get set.
+
+Adopt a default of RGB666 in all these cases.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dpi.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dpi.c
++++ b/drivers/gpu/drm/vc4/vc4_dpi.c
+@@ -173,6 +173,10 @@ static void vc4_dpi_encoder_enable(struc
+ 				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR,
+ 						       DPI_ORDER);
+ 				break;
++			default:
++				DRM_ERROR("Unknown media bus format %d\n",
++					  bus_format);
++				fallthrough;
+ 			case MEDIA_BUS_FMT_RGB666_1X18:
+ 				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
+ 						       DPI_FORMAT);
+@@ -187,11 +191,12 @@ static void vc4_dpi_encoder_enable(struc
+ 				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+ 						       DPI_FORMAT);
+ 				break;
+-			default:
+-				DRM_ERROR("Unknown media bus format %d\n",
+-					  bus_format);
+-				break;
+ 			}
++		} else {
++			/* Default to 18bit if no connector found. */
++			dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
++					       DPI_FORMAT);
++
+ 		}
+ 
+ 		if (connector->display_info.bus_flags &
diff --git a/target/linux/bcm27xx/patches-5.15/950-0598-dt-bcm270x-Add-GPIO-defines-for-RGB565-DPI-output-mo.patch b/target/linux/bcm27xx/patches-5.15/950-0598-dt-bcm270x-Add-GPIO-defines-for-RGB565-DPI-output-mo.patch
new file mode 100644
index 0000000000..1c70b95aaa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0598-dt-bcm270x-Add-GPIO-defines-for-RGB565-DPI-output-mo.patch
@@ -0,0 +1,44 @@
+From c95312441f2c4e24bbb06da51006f3fe47cb61e5 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 18:24:44 +0000
+Subject: [PATCH] dt: bcm270x: Add GPIO defines for RGB565 DPI output
+ modes
+
+Adds the pinctrl defines for the RGB565 DPI output modes.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm270x.dtsi | 22 ++++++++++++++++++++++
+ 1 file changed, 22 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm270x.dtsi
++++ b/arch/arm/boot/dts/bcm270x.dtsi
+@@ -189,6 +189,28 @@
+ 			     20 21>;
+ 		brcm,function = <BCM2835_FSEL_ALT2>;
+ 	};
++	dpi_16bit_gpio0: dpi_16bit_gpio0 {
++		brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
++			     12 13 14 15 16 17 18 19>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++	};
++	dpi_16bit_gpio2: dpi_16bit_gpio2 {
++		brcm,pins = <2 3 4 5 6 7 8 9 10 11
++			     12 13 14 15 16 17 18 19>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++	};
++	dpi_16bit_cpadhi_gpio0: dpi_16bit_cpadhi_gpio0 {
++		brcm,pins = <0 1 2 3 4 5 6 7 8
++			     12 13 14 15 16 17
++			     20 21 22 23 24>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++	};
++	dpi_16bit_cpadhi_gpio2: dpi_16bit_cpadhi_gpio2 {
++		brcm,pins = <2 3 4 5 6 7 8
++			     12 13 14 15 16 17
++			     20 21 22 23 24>;
++		brcm,function = <BCM2835_FSEL_ALT2>;
++	};
+ };
+ 
+ &uart0 {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0599-dtoverlays-Add-a-generic-DPI-panel-overlay-for-KMS.patch b/target/linux/bcm27xx/patches-5.15/950-0599-dtoverlays-Add-a-generic-DPI-panel-overlay-for-KMS.patch
new file mode 100644
index 0000000000..0ab14d3e72
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0599-dtoverlays-Add-a-generic-DPI-panel-overlay-for-KMS.patch
@@ -0,0 +1,158 @@
+From 208d270a7b613e5593390d38a9fba8bd248c5928 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 18:06:37 +0000
+Subject: [PATCH] dtoverlays: Add a generic DPI panel overlay for KMS
+
+Uses the "panel-dpi" compatible to set panel timings from
+DT.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 28 ++++++
+ .../overlays/vc4-kms-dpi-generic-overlay.dts  | 92 +++++++++++++++++++
+ 3 files changed, 121 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -232,6 +232,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	vc4-fkms-v3d.dtbo \
+ 	vc4-fkms-v3d-pi4.dtbo \
+ 	vc4-kms-dpi-at056tn53v1.dtbo \
++	vc4-kms-dpi-generic.dtbo \
+ 	vc4-kms-dsi-7inch.dtbo \
+ 	vc4-kms-dsi-lt070me05000.dtbo \
+ 	vc4-kms-dsi-lt070me05000-v2.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3563,6 +3563,34 @@ Load:   dtoverlay=vc4-kms-dpi-at056tn53v
+ Params: <None>
+ 
+ 
++Name:   vc4-kms-dpi-generic
++Info:   Enable a generic DPI display under KMS. Default timings are for the
++        Adafruit Kippah with 800x480 panel and RGB666 (GPIOs 0-21)
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dpi-generic,<param>=<val>
++Params: clock-frequency         Display clock frequency (Hz)
++        hactive                 Horizontal active pixels
++        hfp                     Horizontal front porch
++        hsync                   Horizontal sync pulse width
++        hbp                     Horizontal back porch
++        vactive                 Vertical active lines
++        vfp                     Vertical front porch
++        vsync                   Vertical sync pulse width
++        vbp                     Vertical back porch
++        hsync-invert            Horizontal sync active low
++        vsync-invert            Vertical sync active low
++        de-invert               Data Enable active low
++        pixclk-invert           Negative edge pixel clock
++        width-mm                Define the screen width in mm
++        height-mm               Define the screen height in mm
++        rgb565                  Change to RGB565 output on GPIOs 0-19
++        rgb666-padhi            Change to RGB666 output on GPIOs 0-9, 12-17, and
++                                20-25
++        rgb888                  Change to RGB888 output on GPIOs 0-27
++        bus-format              Override the bus format for a MEDIA_BUS_FMT_*
++                                value. NB also overridden by rgbXXX overrides.
++
++
+ Name:   vc4-kms-dsi-7inch
+ Info:   Enable the Raspberry Pi DSI 7" screen.
+         Includes the edt-ft5406 for the touchscreen element.
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -0,0 +1,92 @@
++/*
++ * vc4-kms-dpi-at056tn53v1-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			panel: panel {
++				compatible = "panel-dpi";
++
++				width-mm = <154>;
++				height-mm = <83>;
++				bus-format = <0x1009>;
++
++				timing: panel-timing {
++					clock-frequency = <29500000>;
++					hactive = <800>;
++					hfront-porch = <24>;
++					hsync-len = <72>;
++					hback-porch = <96>;
++					hsync-active = <0>;
++					vactive = <480>;
++					vfront-porch = <3>;
++					vsync-len = <10>;
++					vback-porch = <7>;
++					vsync-active = <0>;
++
++					de-active = <1>;
++					pixelclk-active = <1>;
++				};
++
++				port {
++					panel_in: endpoint {
++						remote-endpoint = <&dpi_out>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&dpi>;
++		dpi_node: __overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_gpio0>;
++
++			port {
++				dpi_out: endpoint {
++					remote-endpoint = <&panel_in>;
++				};
++			};
++		};
++	};
++
++	__overrides__ {
++		clock-frequency = <&timing>, "clock-frequency:0";
++		hactive = <&timing>, "hactive:0";
++		hfp = <&timing>, "hfront-porch:0";
++		hsync = <&timing>, "hsync-len:0";
++		hbp = <&timing>, "hback-porch:0";
++		vactive = <&timing>, "vactive:0";
++		vfp = <&timing>, "vfront-porch:0";
++		vsync = <&timing>, "vsync-len:0";
++		vbp = <&timing>, "vback-porch:0";
++		hsync-invert = <&timing>, "hsync-active:0=0";
++		vsync-invert = <&timing>, "vsync-active:0=0";
++		de-invert = <&timing>, "de-active:0=0";
++		pixclk-invert = <&timing>, "pixelclk-active:0=0";
++
++		width-mm = <&panel>, "width-mm:0";
++		height-mm = <&panel>, "height-mm:0";
++
++		rgb565 = <&panel>, "bus-format:0=0x1017",
++			<&dpi_node>, "pinctrl-0:0=",<&dpi_16bit_gpio0>;
++		rgb666-padhi = <&panel>, "bus-format:0=0x1015",
++			<&dpi_node>, "pinctrl-0:0=",<&dpi_18bit_cpadhi_gpio0>;
++		rgb888 = <&panel>, "bus-format:0=0x100a",
++			<&dpi_node>, "pinctrl-0:0=",<&dpi_gpio0>;
++		bus-format = <&panel>, "bus-format:0";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0600-xhci-quirks-add-link-TRB-quirk-for-VL805.patch b/target/linux/bcm27xx/patches-5.15/950-0600-xhci-quirks-add-link-TRB-quirk-for-VL805.patch
new file mode 100644
index 0000000000..fc30067f1f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0600-xhci-quirks-add-link-TRB-quirk-for-VL805.patch
@@ -0,0 +1,60 @@
+From 4dccc6e881f1e8d93c895a4b89e266d79e2746df Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Mon, 26 Oct 2020 14:03:35 +0000
+Subject: [PATCH] xhci: quirks: add link TRB quirk for VL805
+
+The VL805 controller can't cope with the TR Dequeue Pointer for an endpoint
+being set to a Link TRB. The hardware-maintained endpoint context ends up
+stuck at the address of the Link TRB, leading to erroneous ring expansion
+events whenever the enqueue pointer wraps to the dequeue position.
+
+If the search for the end of the current TD and ring cycle state lands on
+a Link TRB, move to the next segment.
+
+See: https://github.com/raspberrypi/linux/issues/3919
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/xhci-pci.c  | 1 +
+ drivers/usb/host/xhci-ring.c | 9 +++++++++
+ drivers/usb/host/xhci.h      | 1 +
+ 3 files changed, 11 insertions(+)
+
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -298,6 +298,7 @@ static void xhci_pci_quirks(struct devic
+ 	if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) {
+ 		xhci->quirks |= XHCI_LPM_SUPPORT;
+ 		xhci->quirks |= XHCI_EP_CTX_BROKEN_DCS;
++		xhci->quirks |= XHCI_AVOID_DQ_ON_LINK;
+ 	}
+ 
+ 	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -667,6 +667,15 @@ static int xhci_move_dequeue_past_td(str
+ 	} while (!cycle_found || !td_last_trb_found);
+ 
+ deq_found:
++	/*
++	 * Quirk: the xHC does not correctly parse link TRBs if the HW Dequeue
++	 * pointer is set to one. Advance to the next TRB (and next segment).
++	 */
++	if (xhci->quirks & XHCI_AVOID_DQ_ON_LINK && trb_is_link(new_deq)) {
++		if (link_trb_toggles_cycle(new_deq))
++			new_cycle ^= 0x1;
++		next_trb(xhci, ep_ring, &new_seg, &new_deq);
++	}
+ 
+ 	/* Don't update the ring cycle state for the producer (us). */
+ 	addr = xhci_trb_virt_to_dma(new_seg, new_deq);
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1903,6 +1903,7 @@ struct xhci_hcd {
+ #define XHCI_NO_SOFT_RETRY	BIT_ULL(40)
+ #define XHCI_BROKEN_D3COLD	BIT_ULL(41)
+ #define XHCI_EP_CTX_BROKEN_DCS	BIT_ULL(42)
++#define XHCI_AVOID_DQ_ON_LINK	BIT_ULL(43)
+ 
+ 	unsigned int		num_active_eps;
+ 	unsigned int		limit_active_eps;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0601-xhci-correct-room_on_ring-for-cases-where-there-is-a.patch b/target/linux/bcm27xx/patches-5.15/950-0601-xhci-correct-room_on_ring-for-cases-where-there-is-a.patch
new file mode 100644
index 0000000000..26e4f7ae78
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0601-xhci-correct-room_on_ring-for-cases-where-there-is-a.patch
@@ -0,0 +1,29 @@
+From f759fff2c1bf5d1506a3994c6e2d92d6fbb3f000 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Fri, 3 Dec 2021 14:32:05 +0000
+Subject: [PATCH] xhci: correct room_on_ring() for cases where there is
+ a single segment
+
+Don't calculate space based on the number of TRBs in the current segment,
+as it's OK to wrap to the start (and flip the cycle state bit).
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/xhci-ring.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -289,6 +289,12 @@ static inline int room_on_ring(struct xh
+ 		return 0;
+ 
+ 	if (ring->type != TYPE_COMMAND && ring->type != TYPE_EVENT) {
++		/*
++		 * If the ring has a single segment the dequeue segment
++		 * never changes, so don't use it as measure of free space.
++		 */
++		if (ring->num_segs == 1)
++			return ring->num_trbs_free >= num_trbs;
+ 		num_trbs_in_deq_seg = ring->dequeue - ring->deq_seg->trbs;
+ 		if (ring->num_trbs_free < num_trbs + num_trbs_in_deq_seg)
+ 			return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0602-media-imx219-Advertise-embedded-data-node-on-media-p.patch b/target/linux/bcm27xx/patches-5.15/950-0602-media-imx219-Advertise-embedded-data-node-on-media-p.patch
new file mode 100644
index 0000000000..79487b60cf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0602-media-imx219-Advertise-embedded-data-node-on-media-p.patch
@@ -0,0 +1,416 @@
+From c144d907a9067f948706a4cb8709672b0708c4c4 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Wed, 8 Dec 2021 13:22:48 +0100
+Subject: [PATCH]  media: imx219: Advertise embedded data node on media
+ pad 1
+
+This commit updates the imx219 driver to adverise support for embedded
+data streams.  This can then be used by the bcm2835-unicam driver, which
+has recently been updated to expose the embedded data stream to
+userland.
+
+The imx219 sensor subdevice overloads the media pad to differentiate
+between image stream (pad 0) and embedded data stream (pad 1) when
+performing the v4l2_subdev_pad_ops functions.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+[JMH: Adapt to the mainline 5.16 kernel]
+Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
+---
+ drivers/media/i2c/imx219.c | 254 ++++++++++++++++++++++++-------------
+ 1 file changed, 169 insertions(+), 85 deletions(-)
+
+--- a/drivers/media/i2c/imx219.c
++++ b/drivers/media/i2c/imx219.c
+@@ -118,6 +118,16 @@
+ #define IMX219_PIXEL_ARRAY_WIDTH	3280U
+ #define IMX219_PIXEL_ARRAY_HEIGHT	2464U
+ 
++/* Embedded metadata stream structure */
++#define IMX219_EMBEDDED_LINE_WIDTH 16384
++#define IMX219_NUM_EMBEDDED_LINES 1
++
++enum pad_types {
++	IMAGE_PAD,
++	METADATA_PAD,
++	NUM_PADS
++};
++
+ struct imx219_reg {
+ 	u16 address;
+ 	u8 val;
+@@ -538,7 +548,7 @@ static const struct imx219_mode supporte
+ 
+ struct imx219 {
+ 	struct v4l2_subdev sd;
+-	struct media_pad pad;
++	struct media_pad pad[NUM_PADS];
+ 
+ 	struct v4l2_mbus_framefmt fmt;
+ 
+@@ -688,18 +698,26 @@ static void imx219_set_default_format(st
+ static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+ {
+ 	struct imx219 *imx219 = to_imx219(sd);
+-	struct v4l2_mbus_framefmt *try_fmt =
+-		v4l2_subdev_get_try_format(sd, fh->state, 0);
++	struct v4l2_mbus_framefmt *try_fmt_img =
++		v4l2_subdev_get_try_format(sd, fh->state, IMAGE_PAD);
++	struct v4l2_mbus_framefmt *try_fmt_meta =
++		v4l2_subdev_get_try_format(sd, fh->state, METADATA_PAD);
+ 	struct v4l2_rect *try_crop;
+ 
+ 	mutex_lock(&imx219->mutex);
+ 
+-	/* Initialize try_fmt */
+-	try_fmt->width = supported_modes[0].width;
+-	try_fmt->height = supported_modes[0].height;
+-	try_fmt->code = imx219_get_format_code(imx219,
+-					       MEDIA_BUS_FMT_SRGGB10_1X10);
+-	try_fmt->field = V4L2_FIELD_NONE;
++	/* Initialize try_fmt for the image pad */
++	try_fmt_img->width = supported_modes[0].width;
++	try_fmt_img->height = supported_modes[0].height;
++	try_fmt_img->code = imx219_get_format_code(imx219,
++						   MEDIA_BUS_FMT_SRGGB10_1X10);
++	try_fmt_img->field = V4L2_FIELD_NONE;
++
++	/* Initialize try_fmt for the embedded metadata pad */
++	try_fmt_meta->width = IMX219_EMBEDDED_LINE_WIDTH;
++	try_fmt_meta->height = IMX219_NUM_EMBEDDED_LINES;
++	try_fmt_meta->code = MEDIA_BUS_FMT_SENSOR_DATA;
++	try_fmt_meta->field = V4L2_FIELD_NONE;
+ 
+ 	/* Initialize try_crop rectangle. */
+ 	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
+@@ -808,12 +826,21 @@ static int imx219_enum_mbus_code(struct
+ {
+ 	struct imx219 *imx219 = to_imx219(sd);
+ 
+-	if (code->index >= (ARRAY_SIZE(codes) / 4))
++	if (code->pad >= NUM_PADS)
+ 		return -EINVAL;
+ 
+-	mutex_lock(&imx219->mutex);
+-	code->code = imx219_get_format_code(imx219, codes[code->index * 4]);
+-	mutex_unlock(&imx219->mutex);
++	if (code->pad == IMAGE_PAD) {
++		if (code->index >= (ARRAY_SIZE(codes) / 4))
++			return -EINVAL;
++
++		code->code = imx219_get_format_code(imx219,
++						    codes[code->index * 4]);
++	} else {
++		if (code->index > 0)
++			return -EINVAL;
++
++		code->code = MEDIA_BUS_FMT_SENSOR_DATA;
++	}
+ 
+ 	return 0;
+ }
+@@ -823,21 +850,30 @@ static int imx219_enum_frame_size(struct
+ 				  struct v4l2_subdev_frame_size_enum *fse)
+ {
+ 	struct imx219 *imx219 = to_imx219(sd);
+-	u32 code;
+ 
+-	if (fse->index >= ARRAY_SIZE(supported_modes))
++	if (fse->pad >= NUM_PADS)
+ 		return -EINVAL;
+ 
+-	mutex_lock(&imx219->mutex);
+-	code = imx219_get_format_code(imx219, fse->code);
+-	mutex_unlock(&imx219->mutex);
+-	if (fse->code != code)
+-		return -EINVAL;
++	if (fse->pad == IMAGE_PAD) {
++		if (fse->index >= ARRAY_SIZE(supported_modes))
++			return -EINVAL;
++
++		if (fse->code != imx219_get_format_code(imx219, fse->code))
++			return -EINVAL;
++
++		fse->min_width = supported_modes[fse->index].width;
++		fse->max_width = fse->min_width;
++		fse->min_height = supported_modes[fse->index].height;
++		fse->max_height = fse->min_height;
++	} else {
++		if (fse->code != MEDIA_BUS_FMT_SENSOR_DATA || fse->index > 0)
++			return -EINVAL;
+ 
+-	fse->min_width = supported_modes[fse->index].width;
+-	fse->max_width = fse->min_width;
+-	fse->min_height = supported_modes[fse->index].height;
+-	fse->max_height = fse->min_height;
++		fse->min_width = IMX219_EMBEDDED_LINE_WIDTH;
++		fse->max_width = fse->min_width;
++		fse->min_height = IMX219_NUM_EMBEDDED_LINES;
++		fse->max_height = fse->min_height;
++	}
+ 
+ 	return 0;
+ }
+@@ -852,9 +888,9 @@ static void imx219_reset_colorspace(stru
+ 	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+ }
+ 
+-static void imx219_update_pad_format(struct imx219 *imx219,
+-				     const struct imx219_mode *mode,
+-				     struct v4l2_subdev_format *fmt)
++static void imx219_update_image_pad_format(struct imx219 *imx219,
++					   const struct imx219_mode *mode,
++					   struct v4l2_subdev_format *fmt)
+ {
+ 	fmt->format.width = mode->width;
+ 	fmt->format.height = mode->height;
+@@ -862,21 +898,39 @@ static void imx219_update_pad_format(str
+ 	imx219_reset_colorspace(&fmt->format);
+ }
+ 
++static void imx219_update_metadata_pad_format(struct v4l2_subdev_format *fmt)
++{
++	fmt->format.width = IMX219_EMBEDDED_LINE_WIDTH;
++	fmt->format.height = IMX219_NUM_EMBEDDED_LINES;
++	fmt->format.code = MEDIA_BUS_FMT_SENSOR_DATA;
++	fmt->format.field = V4L2_FIELD_NONE;
++}
++
+ static int __imx219_get_pad_format(struct imx219 *imx219,
+ 				   struct v4l2_subdev_state *sd_state,
+ 				   struct v4l2_subdev_format *fmt)
+ {
++	if (fmt->pad >= NUM_PADS)
++		return -EINVAL;
++
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ 		struct v4l2_mbus_framefmt *try_fmt =
+ 			v4l2_subdev_get_try_format(&imx219->sd, sd_state,
+ 						   fmt->pad);
+ 		/* update the code which could change due to vflip or hflip: */
+-		try_fmt->code = imx219_get_format_code(imx219, try_fmt->code);
++		try_fmt->code = fmt->pad == IMAGE_PAD ?
++				imx219_get_format_code(imx219, try_fmt->code) :
++				MEDIA_BUS_FMT_SENSOR_DATA;
+ 		fmt->format = *try_fmt;
+ 	} else {
+-		imx219_update_pad_format(imx219, imx219->mode, fmt);
+-		fmt->format.code = imx219_get_format_code(imx219,
+-							  imx219->fmt.code);
++		if (fmt->pad == IMAGE_PAD) {
++			imx219_update_image_pad_format(imx219, imx219->mode,
++						       fmt);
++			fmt->format.code = imx219_get_format_code(imx219,
++							      imx219->fmt.code);
++		} else {
++			imx219_update_metadata_pad_format(fmt);
++		}
+ 	}
+ 
+ 	return 0;
+@@ -906,51 +960,74 @@ static int imx219_set_pad_format(struct
+ 	int exposure_max, exposure_def, hblank;
+ 	unsigned int i;
+ 
+-	mutex_lock(&imx219->mutex);
+-
+-	for (i = 0; i < ARRAY_SIZE(codes); i++)
+-		if (codes[i] == fmt->format.code)
+-			break;
+-	if (i >= ARRAY_SIZE(codes))
+-		i = 0;
++	if (fmt->pad >= NUM_PADS)
++		return -EINVAL;
+ 
+-	/* Bayer order varies with flips */
+-	fmt->format.code = imx219_get_format_code(imx219, codes[i]);
++	mutex_lock(&imx219->mutex);
+ 
+-	mode = v4l2_find_nearest_size(supported_modes,
+-				      ARRAY_SIZE(supported_modes),
+-				      width, height,
+-				      fmt->format.width, fmt->format.height);
+-	imx219_update_pad_format(imx219, mode, fmt);
+-	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+-		framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+-		*framefmt = fmt->format;
+-	} else if (imx219->mode != mode ||
+-		   imx219->fmt.code != fmt->format.code) {
+-		imx219->fmt = fmt->format;
+-		imx219->mode = mode;
+-		/* Update limits and set FPS to default */
+-		__v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
+-					 IMX219_VTS_MAX - mode->height, 1,
+-					 mode->vts_def - mode->height);
+-		__v4l2_ctrl_s_ctrl(imx219->vblank,
+-				   mode->vts_def - mode->height);
+-		/* Update max exposure while meeting expected vblanking */
+-		exposure_max = mode->vts_def - 4;
+-		exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
+-			exposure_max : IMX219_EXPOSURE_DEFAULT;
+-		__v4l2_ctrl_modify_range(imx219->exposure,
+-					 imx219->exposure->minimum,
+-					 exposure_max, imx219->exposure->step,
+-					 exposure_def);
+-		/*
+-		 * Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank
+-		 * depends on mode->width only, and is not changeble in any
+-		 * way other than changing the mode.
+-		 */
+-		hblank = IMX219_PPL_DEFAULT - mode->width;
+-		__v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1,
+-					 hblank);
++	if (fmt->pad == IMAGE_PAD) {
++		for (i = 0; i < ARRAY_SIZE(codes); i++)
++			if (codes[i] == fmt->format.code)
++				break;
++		if (i >= ARRAY_SIZE(codes))
++			i = 0;
++
++		/* Bayer order varies with flips */
++		fmt->format.code = imx219_get_format_code(imx219, codes[i]);
++
++		mode = v4l2_find_nearest_size(supported_modes,
++					      ARRAY_SIZE(supported_modes),
++					      width, height,
++					      fmt->format.width,
++					      fmt->format.height);
++		imx219_update_image_pad_format(imx219, mode, fmt);
++		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++			framefmt = v4l2_subdev_get_try_format(sd, sd_state,
++							      fmt->pad);
++			*framefmt = fmt->format;
++		} else if (imx219->mode != mode ||
++			imx219->fmt.code != fmt->format.code) {
++			imx219->fmt = fmt->format;
++			imx219->mode = mode;
++			/* Update limits and set FPS to default */
++			__v4l2_ctrl_modify_range(imx219->vblank,
++						 IMX219_VBLANK_MIN,
++						 IMX219_VTS_MAX - mode->height,
++						 1,
++						 mode->vts_def - mode->height);
++			__v4l2_ctrl_s_ctrl(imx219->vblank,
++					   mode->vts_def - mode->height);
++			/*
++			 * Update max exposure while meeting
++			 * expected vblanking
++			 */
++			exposure_max = mode->vts_def - 4;
++			exposure_def =
++				(exposure_max < IMX219_EXPOSURE_DEFAULT) ?
++					exposure_max : IMX219_EXPOSURE_DEFAULT;
++			__v4l2_ctrl_modify_range(imx219->exposure,
++						 imx219->exposure->minimum,
++						 exposure_max,
++						 imx219->exposure->step,
++						 exposure_def);
++			/*
++			 * Currently PPL is fixed to IMX219_PPL_DEFAULT, so
++			 * hblank depends on mode->width only, and is not
++			 * changeble in any way other than changing the mode.
++			 */
++			hblank = IMX219_PPL_DEFAULT - mode->width;
++			__v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank,
++						 1, hblank);
++		}
++	} else {
++		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++			framefmt = v4l2_subdev_get_try_format(sd, sd_state,
++							      fmt->pad);
++			*framefmt = fmt->format;
++		} else {
++			/* Only one embedded data mode is supported */
++			imx219_update_metadata_pad_format(fmt);
++		}
+ 	}
+ 
+ 	mutex_unlock(&imx219->mutex);
+@@ -1037,9 +1114,11 @@ static int imx219_start_streaming(struct
+ 	const struct imx219_reg_list *reg_list;
+ 	int ret;
+ 
+-	ret = pm_runtime_resume_and_get(&client->dev);
+-	if (ret < 0)
++	ret = pm_runtime_get_sync(&client->dev);
++	if (ret < 0) {
++		pm_runtime_put_noidle(&client->dev);
+ 		return ret;
++	}
+ 
+ 	/* Apply default values of current mode */
+ 	reg_list = &imx219->mode->reg_list;
+@@ -1133,21 +1212,22 @@ err_unlock:
+ /* Power/clock management functions */
+ static int imx219_power_on(struct device *dev)
+ {
+-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ 	struct imx219 *imx219 = to_imx219(sd);
+ 	int ret;
+ 
+ 	ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES,
+ 				    imx219->supplies);
+ 	if (ret) {
+-		dev_err(dev, "%s: failed to enable regulators\n",
++		dev_err(&client->dev, "%s: failed to enable regulators\n",
+ 			__func__);
+ 		return ret;
+ 	}
+ 
+ 	ret = clk_prepare_enable(imx219->xclk);
+ 	if (ret) {
+-		dev_err(dev, "%s: failed to enable clock\n",
++		dev_err(&client->dev, "%s: failed to enable clock\n",
+ 			__func__);
+ 		goto reg_off;
+ 	}
+@@ -1166,7 +1246,8 @@ reg_off:
+ 
+ static int imx219_power_off(struct device *dev)
+ {
+-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ 	struct imx219 *imx219 = to_imx219(sd);
+ 
+ 	gpiod_set_value_cansleep(imx219->reset_gpio, 0);
+@@ -1178,7 +1259,8 @@ static int imx219_power_off(struct devic
+ 
+ static int __maybe_unused imx219_suspend(struct device *dev)
+ {
+-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ 	struct imx219 *imx219 = to_imx219(sd);
+ 
+ 	if (imx219->streaming)
+@@ -1189,7 +1271,8 @@ static int __maybe_unused imx219_suspend
+ 
+ static int __maybe_unused imx219_resume(struct device *dev)
+ {
+-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ 	struct imx219 *imx219 = to_imx219(sd);
+ 	int ret;
+ 
+@@ -1525,13 +1608,14 @@ static int imx219_probe(struct i2c_clien
+ 			    V4L2_SUBDEV_FL_HAS_EVENTS;
+ 	imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ 
+-	/* Initialize source pad */
+-	imx219->pad.flags = MEDIA_PAD_FL_SOURCE;
++	/* Initialize source pads */
++	imx219->pad[IMAGE_PAD].flags = MEDIA_PAD_FL_SOURCE;
++	imx219->pad[METADATA_PAD].flags = MEDIA_PAD_FL_SOURCE;
+ 
+ 	/* Initialize default format */
+ 	imx219_set_default_format(imx219);
+ 
+-	ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad);
++	ret = media_entity_pads_init(&imx219->sd.entity, NUM_PADS, imx219->pad);
+ 	if (ret) {
+ 		dev_err(dev, "failed to init entity pads: %d\n", ret);
+ 		goto error_handler_free;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0603-vc4-drm-Ignore-vc4_hdmi-output_enabled-for-allowing-.patch b/target/linux/bcm27xx/patches-5.15/950-0603-vc4-drm-Ignore-vc4_hdmi-output_enabled-for-allowing-.patch
new file mode 100644
index 0000000000..9d0361c426
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0603-vc4-drm-Ignore-vc4_hdmi-output_enabled-for-allowing-.patch
@@ -0,0 +1,98 @@
+From 68522ed7c1135fd5ea5b4541d557bdbdcba80669 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 8 Dec 2021 15:57:15 +0000
+Subject: [PATCH] vc4/drm: Ignore vc4_hdmi->output_enabled for allowing
+ audio (#4759)
+
+Otherwise we reject audio playback when switching hdmi modes
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 29 ++---------------------------
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  6 ------
+ 2 files changed, 2 insertions(+), 33 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -210,6 +210,7 @@ vc4_hdmi_connector_detect(struct drm_con
+ 			connected = true;
+ 	}
+ 
++	vc4_hdmi->encoder.hdmi_monitor = false;
+ 	if (connected) {
+ 		if (connector->status != connector_status_connected) {
+ 			struct edid *edid = drm_get_edid(connector, vc4_hdmi->ddc);
+@@ -730,15 +731,6 @@ static void vc4_hdmi_encoder_post_crtc_p
+ 	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+-static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder)
+-{
+-	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+-
+-	mutex_lock(&vc4_hdmi->mutex);
+-	vc4_hdmi->output_enabled = false;
+-	mutex_unlock(&vc4_hdmi->mutex);
+-}
+-
+ static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, bool enable)
+ {
+ 	unsigned long flags;
+@@ -1218,15 +1210,6 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+-static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder)
+-{
+-	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+-
+-	mutex_lock(&vc4_hdmi->mutex);
+-	vc4_hdmi->output_enabled = true;
+-	mutex_unlock(&vc4_hdmi->mutex);
+-}
+-
+ static void vc4_hdmi_encoder_atomic_mode_set(struct drm_encoder *encoder,
+ 					     struct drm_crtc_state *crtc_state,
+ 					     struct drm_connector_state *conn_state)
+@@ -1320,8 +1303,6 @@ static const struct drm_encoder_helper_f
+ 	.atomic_check = vc4_hdmi_encoder_atomic_check,
+ 	.atomic_mode_set = vc4_hdmi_encoder_atomic_mode_set,
+ 	.mode_valid = vc4_hdmi_encoder_mode_valid,
+-	.disable = vc4_hdmi_encoder_disable,
+-	.enable = vc4_hdmi_encoder_enable,
+ };
+ 
+ static u32 vc4_hdmi_channel_map(struct vc4_hdmi *vc4_hdmi, u32 channel_mask)
+@@ -1421,16 +1402,10 @@ static bool vc4_hdmi_audio_can_stream(st
+ 	lockdep_assert_held(&vc4_hdmi->mutex);
+ 
+ 	/*
+-	 * If the controller is disabled, prevent any ALSA output.
+-	 */
+-	if (!vc4_hdmi->output_enabled)
+-		return false;
+-
+-	/*
+ 	 * If the encoder is currently in DVI mode, treat the codec DAI
+ 	 * as missing.
+ 	 */
+-	if (!(HDMI_READ(HDMI_RAM_PACKET_CONFIG) & VC4_HDMI_RAM_PACKET_ENABLE))
++	if (!vc4_hdmi->encoder.hdmi_monitor)
+ 		return false;
+ 
+ 	return true;
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -209,12 +209,6 @@ struct vc4_hdmi {
+ 	struct drm_display_mode saved_adjusted_mode;
+ 
+ 	/**
+-	 * @output_enabled: Is the HDMI controller currently active?
+-	 * Protected by @mutex.
+-	 */
+-	bool output_enabled;
+-
+-	/**
+ 	 * @scdc_enabled: Is the HDMI controller currently running with
+ 	 * the scrambler on? Protected by @mutex.
+ 	 */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0604-ARM-dts-Create-bcm2711-rpi-cm4s.dts-4761.patch b/target/linux/bcm27xx/patches-5.15/950-0604-ARM-dts-Create-bcm2711-rpi-cm4s.dts-4761.patch
new file mode 100644
index 0000000000..c1dd848e49
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0604-ARM-dts-Create-bcm2711-rpi-cm4s.dts-4761.patch
@@ -0,0 +1,425 @@
+From dc1156479b5bf177ecb403e11fe990af5db54394 Mon Sep 17 00:00:00 2001
+From: peterharperuk <77111776+peterharperuk@users.noreply.github.com>
+Date: Mon, 13 Dec 2021 14:00:35 +0000
+Subject: [PATCH] ARM: dts: Create bcm2711-rpi-cm4s.dts (#4761)
+
+Signed-off-by: Peter Harper <peter.harper@raspberrypi.com>
+---
+ arch/arm/boot/dts/Makefile             |   3 +-
+ arch/arm/boot/dts/bcm2711-rpi-cm4s.dts | 398 +++++++++++++++++++++++++
+ 2 files changed, 400 insertions(+), 1 deletion(-)
+ create mode 100644 arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -16,7 +16,8 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
+ 	bcm2711-rpi-4-b.dtb \
+ 	bcm2711-rpi-400.dtb \
+ 	bcm2710-rpi-cm3.dtb \
+-	bcm2711-rpi-cm4.dtb
++	bcm2711-rpi-cm4.dtb \
++	bcm2711-rpi-cm4s.dtb
+ 
+ dtb-$(CONFIG_ARCH_ALPINE) += \
+ 	alpine-db.dtb
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
+@@ -0,0 +1,398 @@
++// SPDX-License-Identifier: GPL-2.0
++/dts-v1/;
++#include "bcm2711.dtsi"
++#include "bcm2711-rpi.dtsi"
++
++/ {
++	compatible = "raspberrypi,4-compute-module-s", "brcm,bcm2711";
++	model = "Raspberry Pi Compute Module 4S";
++
++	chosen {
++		/* 8250 auxiliary UART instead of pl011 */
++		stdout-path = "serial1:115200n8";
++	};
++
++	leds {
++		led-act {
++			gpios = <&virtgpio 0 0>;
++		};
++	};
++};
++
++&ddc0 {
++	status = "okay";
++};
++
++&gpio {
++	/*
++	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "GPIO28",
++			  "GPIO29",
++			  "GPIO30",
++			  "GPIO31",
++			  "GPIO32",
++			  "GPIO33",
++			  "GPIO34",
++			  "GPIO35",
++			  "GPIO36",
++			  "GPIO37",
++			  "GPIO38",
++			  "GPIO39",
++			  "PWM0_MISO",
++			  "PWM1_MOSI",
++			  "GPIO42",
++			  "GPIO43",
++			  "GPIO44",
++			  "GPIO45";
++};
++
++&hdmi0 {
++	status = "okay";
++};
++
++&pixelvalve0 {
++	status = "okay";
++};
++
++&pixelvalve1 {
++	status = "okay";
++};
++
++&pixelvalve2 {
++	status = "okay";
++};
++
++&pixelvalve4 {
++	status = "okay";
++};
++
++&pwm1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;
++	status = "okay";
++};
++
++/* EMMC2 is used to drive the EMMC card */
++&emmc2 {
++	bus-width = <8>;
++	broken-cd;
++	status = "okay";
++};
++
++&pcie0 {
++	status = "disabled";
++};
++
++&vchiq {
++	interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
++};
++
++&vc4 {
++	status = "okay";
++};
++
++&vec {
++	status = "disabled";
++};
++
++// =============================================
++// Downstream rpi- changes
++
++#define BCM2711
++
++#include "bcm270x.dtsi"
++#include "bcm2711-rpi-ds.dtsi"
++
++/ {
++	soc {
++		/delete-node/ pixelvalve@7e807000;
++		/delete-node/ hdmi@7e902000;
++
++		virtgpio: virtgpio {
++			compatible = "brcm,bcm2835-virtgpio";
++			gpio-controller;
++			#gpio-cells = <2>;
++			firmware = <&firmware>;
++			status = "okay";
++		};
++	};
++};
++
++#include "bcm283x-rpi-csi0-2lane.dtsi"
++#include "bcm283x-rpi-csi1-4lane.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
++
++/ {
++	chosen {
++		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
++	};
++
++	aliases {
++		serial0 = &uart0;
++		mmc0 = &emmc2;
++		mmc1 = &mmcnr;
++		mmc2 = &sdhost;
++		i2c3 = &i2c3;
++		i2c4 = &i2c4;
++		i2c5 = &i2c5;
++		i2c6 = &i2c6;
++		spi3 = &spi3;
++		spi4 = &spi4;
++		spi5 = &spi5;
++		spi6 = &spi6;
++		/delete-property/ intc;
++	};
++
++	/delete-node/ wifi-pwrseq;
++};
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_pins>;
++	status = "okay";
++};
++
++&spi0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
++	cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
++
++	spidev0: spidev@0{
++		compatible = "spidev";
++		reg = <0>;	/* CE0 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++
++	spidev1: spidev@1{
++		compatible = "spidev";
++		reg = <1>;	/* CE1 */
++		#address-cells = <1>;
++		#size-cells = <0>;
++		spi-max-frequency = <125000000>;
++	};
++};
++
++&gpio {
++	spi0_pins: spi0_pins {
++		brcm,pins = <9 10 11>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	spi0_cs_pins: spi0_cs_pins {
++		brcm,pins = <8 7>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi3_pins: spi3_pins {
++		brcm,pins = <1 2 3>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi3_cs_pins: spi3_cs_pins {
++		brcm,pins = <0 24>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi4_pins: spi4_pins {
++		brcm,pins = <5 6 7>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi4_cs_pins: spi4_cs_pins {
++		brcm,pins = <4 25>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi5_pins: spi5_pins {
++		brcm,pins = <13 14 15>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi5_cs_pins: spi5_cs_pins {
++		brcm,pins = <12 26>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	spi6_pins: spi6_pins {
++		brcm,pins = <19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT3>;
++	};
++
++	spi6_cs_pins: spi6_cs_pins {
++		brcm,pins = <18 27>;
++		brcm,function = <BCM2835_FSEL_GPIO_OUT>;
++	};
++
++	i2c0_pins: i2c0 {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c1_pins: i2c1 {
++		brcm,pins = <2 3>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c3_pins: i2c3 {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c4_pins: i2c4 {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c5_pins: i2c5 {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2c6_pins: i2c6 {
++		brcm,pins = <22 23>;
++		brcm,function = <BCM2835_FSEL_ALT5>;
++		brcm,pull = <BCM2835_PUD_UP>;
++	};
++
++	i2s_pins: i2s {
++		brcm,pins = <18 19 20 21>;
++		brcm,function = <BCM2835_FSEL_ALT0>;
++	};
++
++	sdio_pins: sdio_pins {
++		brcm,pins =     <34 35 36 37 38 39>;
++		brcm,function = <BCM2835_FSEL_ALT3>; // alt3 = SD1
++		brcm,pull =     <0 2 2 2 2 2>;
++	};
++
++	uart0_pins: uart0_pins {
++		brcm,pins;
++		brcm,function;
++		brcm,pull;
++	};
++
++	uart2_pins: uart2_pins {
++		brcm,pins = <0 1>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart3_pins: uart3_pins {
++		brcm,pins = <4 5>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart4_pins: uart4_pins {
++		brcm,pins = <8 9>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++
++	uart5_pins: uart5_pins {
++		brcm,pins = <12 13>;
++		brcm,function = <BCM2835_FSEL_ALT4>;
++		brcm,pull = <0 2>;
++	};
++};
++
++&i2c0if {
++	clock-frequency = <100000>;
++};
++
++&i2c1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2c1_pins>;
++	clock-frequency = <100000>;
++};
++
++&i2s {
++	pinctrl-names = "default";
++	pinctrl-0 = <&i2s_pins>;
++};
++
++// =============================================
++// Board specific stuff here
++
++&sdhost {
++	status = "disabled";
++};
++
++&gpio {
++	audio_pins: audio_pins {
++		brcm,pins = <>;
++		brcm,function = <>;
++	};
++};
++
++&leds {
++	act_led: led-act {
++		label = "led0";
++		linux,default-trigger = "mmc0";
++	};
++};
++
++&pwm1 {
++	status = "disabled";
++};
++
++&audio {
++	pinctrl-names = "default";
++	pinctrl-0 = <&audio_pins>;
++	brcm,disable-headphones = <1>;
++};
++
++/ {
++	__overrides__ {
++		act_led_gpio = <&act_led>,"gpios:4";
++		act_led_activelow = <&act_led>,"gpios:8";
++		act_led_trigger = <&act_led>,"linux,default-trigger";
++
++		sd_poll_once = <&emmc2>, "non-removable?";
++		spi_dma4 = <&spi0>, "dmas:0=", <&dma40>,
++			   <&spi0>, "dmas:8=", <&dma40>;
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0605-xhci-refactor-out-TRBS_PER_SEGMENT-define-in-runtime.patch b/target/linux/bcm27xx/patches-5.15/950-0605-xhci-refactor-out-TRBS_PER_SEGMENT-define-in-runtime.patch
new file mode 100644
index 0000000000..3f8e6d3f25
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0605-xhci-refactor-out-TRBS_PER_SEGMENT-define-in-runtime.patch
@@ -0,0 +1,258 @@
+From cbe6a244c89bd8826dbf007f8d26d1859f03b381 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Mon, 13 Dec 2021 15:05:56 +0000
+Subject: [PATCH] xhci: refactor out TRBS_PER_SEGMENT define in runtime
+ code
+
+In anticipation of adjusting the number of utilised TRBs in a ring
+segment, add trbs_per_seg to struct xhci_ring and use this instead
+of a compile-time define.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/xhci-mem.c  | 48 +++++++++++++++++++-----------------
+ drivers/usb/host/xhci-ring.c | 20 +++++++++------
+ drivers/usb/host/xhci.c      |  6 ++---
+ drivers/usb/host/xhci.h      |  1 +
+ 4 files changed, 42 insertions(+), 33 deletions(-)
+
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -98,6 +98,7 @@ static void xhci_free_segments_for_ring(
+  */
+ static void xhci_link_segments(struct xhci_segment *prev,
+ 			       struct xhci_segment *next,
++			       unsigned int trbs_per_seg,
+ 			       enum xhci_ring_type type, bool chain_links)
+ {
+ 	u32 val;
+@@ -106,16 +107,16 @@ static void xhci_link_segments(struct xh
+ 		return;
+ 	prev->next = next;
+ 	if (type != TYPE_EVENT) {
+-		prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr =
++		prev->trbs[trbs_per_seg - 1].link.segment_ptr =
+ 			cpu_to_le64(next->dma);
+ 
+ 		/* Set the last TRB in the segment to have a TRB type ID of Link TRB */
+-		val = le32_to_cpu(prev->trbs[TRBS_PER_SEGMENT-1].link.control);
++		val = le32_to_cpu(prev->trbs[trbs_per_seg - 1].link.control);
+ 		val &= ~TRB_TYPE_BITMASK;
+ 		val |= TRB_TYPE(TRB_LINK);
+ 		if (chain_links)
+ 			val |= TRB_CHAIN;
+-		prev->trbs[TRBS_PER_SEGMENT-1].link.control = cpu_to_le32(val);
++		prev->trbs[trbs_per_seg - 1].link.control = cpu_to_le32(val);
+ 	}
+ }
+ 
+@@ -139,15 +140,17 @@ static void xhci_link_rings(struct xhci_
+ 			  (xhci->quirks & XHCI_AMD_0x96_HOST)));
+ 
+ 	next = ring->enq_seg->next;
+-	xhci_link_segments(ring->enq_seg, first, ring->type, chain_links);
+-	xhci_link_segments(last, next, ring->type, chain_links);
++	xhci_link_segments(ring->enq_seg, first, ring->trbs_per_seg,
++			   ring->type, chain_links);
++	xhci_link_segments(last, next, ring->trbs_per_seg,
++			   ring->type, chain_links);
+ 	ring->num_segs += num_segs;
+-	ring->num_trbs_free += (TRBS_PER_SEGMENT - 1) * num_segs;
++	ring->num_trbs_free += (ring->trbs_per_seg - 1) * num_segs;
+ 
+ 	if (ring->type != TYPE_EVENT && ring->enq_seg == ring->last_seg) {
+-		ring->last_seg->trbs[TRBS_PER_SEGMENT-1].link.control
++		ring->last_seg->trbs[ring->trbs_per_seg - 1].link.control
+ 			&= ~cpu_to_le32(LINK_TOGGLE);
+-		last->trbs[TRBS_PER_SEGMENT-1].link.control
++		last->trbs[ring->trbs_per_seg - 1].link.control
+ 			|= cpu_to_le32(LINK_TOGGLE);
+ 		ring->last_seg = last;
+ 	}
+@@ -314,14 +317,15 @@ void xhci_initialize_ring_info(struct xh
+ 	 * Each segment has a link TRB, and leave an extra TRB for SW
+ 	 * accounting purpose
+ 	 */
+-	ring->num_trbs_free = ring->num_segs * (TRBS_PER_SEGMENT - 1) - 1;
++	ring->num_trbs_free = ring->num_segs * (ring->trbs_per_seg - 1) - 1;
+ }
+ 
+ /* Allocate segments and link them for a ring */
+ static int xhci_alloc_segments_for_ring(struct xhci_hcd *xhci,
+ 		struct xhci_segment **first, struct xhci_segment **last,
+-		unsigned int num_segs, unsigned int cycle_state,
+-		enum xhci_ring_type type, unsigned int max_packet, gfp_t flags)
++		unsigned int num_segs, unsigned int trbs_per_seg,
++		unsigned int cycle_state, enum xhci_ring_type type,
++		unsigned int max_packet, gfp_t flags)
+ {
+ 	struct xhci_segment *prev;
+ 	bool chain_links;
+@@ -350,12 +354,12 @@ static int xhci_alloc_segments_for_ring(
+ 			}
+ 			return -ENOMEM;
+ 		}
+-		xhci_link_segments(prev, next, type, chain_links);
++		xhci_link_segments(prev, next, trbs_per_seg, type, chain_links);
+ 
+ 		prev = next;
+ 		num_segs--;
+ 	}
+-	xhci_link_segments(prev, *first, type, chain_links);
++	xhci_link_segments(prev, *first, trbs_per_seg, type, chain_links);
+ 	*last = prev;
+ 
+ 	return 0;
+@@ -387,16 +391,17 @@ struct xhci_ring *xhci_ring_alloc(struct
+ 	if (num_segs == 0)
+ 		return ring;
+ 
++	ring->trbs_per_seg = TRBS_PER_SEGMENT;
+ 	ret = xhci_alloc_segments_for_ring(xhci, &ring->first_seg,
+-			&ring->last_seg, num_segs, cycle_state, type,
+-			max_packet, flags);
++			&ring->last_seg, num_segs, ring->trbs_per_seg,
++			cycle_state, type, max_packet, flags);
+ 	if (ret)
+ 		goto fail;
+ 
+ 	/* Only event ring does not use link TRB */
+ 	if (type != TYPE_EVENT) {
+ 		/* See section 4.9.2.1 and 6.4.4.1 */
+-		ring->last_seg->trbs[TRBS_PER_SEGMENT - 1].link.control |=
++		ring->last_seg->trbs[ring->trbs_per_seg - 1].link.control |=
+ 			cpu_to_le32(LINK_TOGGLE);
+ 	}
+ 	xhci_initialize_ring_info(ring, cycle_state);
+@@ -429,16 +434,15 @@ int xhci_ring_expansion(struct xhci_hcd
+ 	unsigned int		num_segs_needed;
+ 	int			ret;
+ 
+-	num_segs_needed = (num_trbs + (TRBS_PER_SEGMENT - 1) - 1) /
+-				(TRBS_PER_SEGMENT - 1);
+-
++	num_segs_needed = (num_trbs + (ring->trbs_per_seg - 1) - 1) /
++				(ring->trbs_per_seg - 1);
+ 	/* Allocate number of segments we needed, or double the ring size */
+ 	num_segs = ring->num_segs > num_segs_needed ?
+ 			ring->num_segs : num_segs_needed;
+ 
+ 	ret = xhci_alloc_segments_for_ring(xhci, &first, &last,
+-			num_segs, ring->cycle_state, ring->type,
+-			ring->bounce_buf_len, flags);
++			num_segs, ring->trbs_per_seg, ring->cycle_state,
++			ring->type, ring->bounce_buf_len, flags);
+ 	if (ret)
+ 		return -ENOMEM;
+ 
+@@ -1811,7 +1815,7 @@ int xhci_alloc_erst(struct xhci_hcd *xhc
+ 	for (val = 0; val < evt_ring->num_segs; val++) {
+ 		entry = &erst->entries[val];
+ 		entry->seg_addr = cpu_to_le64(seg->dma);
+-		entry->seg_size = cpu_to_le32(TRBS_PER_SEGMENT);
++		entry->seg_size = cpu_to_le32(evt_ring->trbs_per_seg);
+ 		entry->rsvd = 0;
+ 		seg = seg->next;
+ 	}
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -90,15 +90,16 @@ static bool trb_is_link(union xhci_trb *
+ 	return TRB_TYPE_LINK_LE32(trb->link.control);
+ }
+ 
+-static bool last_trb_on_seg(struct xhci_segment *seg, union xhci_trb *trb)
++static bool last_trb_on_seg(struct xhci_segment *seg,
++			    unsigned int trbs_per_seg, union xhci_trb *trb)
+ {
+-	return trb == &seg->trbs[TRBS_PER_SEGMENT - 1];
++	return trb == &seg->trbs[trbs_per_seg - 1];
+ }
+ 
+ static bool last_trb_on_ring(struct xhci_ring *ring,
+ 			struct xhci_segment *seg, union xhci_trb *trb)
+ {
+-	return last_trb_on_seg(seg, trb) && (seg->next == ring->first_seg);
++	return last_trb_on_seg(seg, ring->trbs_per_seg, trb) && (seg->next == ring->first_seg);
+ }
+ 
+ static bool link_trb_toggles_cycle(union xhci_trb *trb)
+@@ -161,7 +162,8 @@ void inc_deq(struct xhci_hcd *xhci, stru
+ 
+ 	/* event ring doesn't have link trbs, check for last trb */
+ 	if (ring->type == TYPE_EVENT) {
+-		if (!last_trb_on_seg(ring->deq_seg, ring->dequeue)) {
++		if (!last_trb_on_seg(ring->deq_seg, ring->trbs_per_seg,
++				     ring->dequeue)) {
+ 			ring->dequeue++;
+ 			goto out;
+ 		}
+@@ -174,7 +176,8 @@ void inc_deq(struct xhci_hcd *xhci, stru
+ 
+ 	/* All other rings have link trbs */
+ 	if (!trb_is_link(ring->dequeue)) {
+-		if (last_trb_on_seg(ring->deq_seg, ring->dequeue)) {
++		if (last_trb_on_seg(ring->deq_seg, ring->trbs_per_seg,
++		    ring->dequeue)) {
+ 			xhci_warn(xhci, "Missing link TRB at end of segment\n");
+ 		} else {
+ 			ring->dequeue++;
+@@ -225,7 +228,7 @@ static void inc_enq(struct xhci_hcd *xhc
+ 	if (!trb_is_link(ring->enqueue))
+ 		ring->num_trbs_free--;
+ 
+-	if (last_trb_on_seg(ring->enq_seg, ring->enqueue)) {
++	if (last_trb_on_seg(ring->enq_seg, ring->trbs_per_seg, ring->enqueue)) {
+ 		xhci_err(xhci, "Tried to move enqueue past ring segment\n");
+ 		return;
+ 	}
+@@ -3153,7 +3156,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd
+ 	 * that clears the EHB.
+ 	 */
+ 	while (xhci_handle_event(xhci) > 0) {
+-		if (event_loop++ < TRBS_PER_SEGMENT / 2)
++		if (event_loop++ < xhci->event_ring->trbs_per_seg / 2)
+ 			continue;
+ 		xhci_update_erst_dequeue(xhci, event_ring_deq);
+ 		event_ring_deq = xhci->event_ring->dequeue;
+@@ -3295,7 +3298,8 @@ static int prepare_ring(struct xhci_hcd
+ 		}
+ 	}
+ 
+-	if (last_trb_on_seg(ep_ring->enq_seg, ep_ring->enqueue)) {
++	if (last_trb_on_seg(ep_ring->enq_seg, ep_ring->trbs_per_seg,
++	    ep_ring->enqueue)) {
+ 		xhci_warn(xhci, "Missing link TRB at end of ring segment\n");
+ 		return -EINVAL;
+ 	}
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -866,8 +866,8 @@ static void xhci_clear_command_ring(stru
+ 	seg = ring->deq_seg;
+ 	do {
+ 		memset(seg->trbs, 0,
+-			sizeof(union xhci_trb) * (TRBS_PER_SEGMENT - 1));
+-		seg->trbs[TRBS_PER_SEGMENT - 1].link.control &=
++			sizeof(union xhci_trb) * (ring->trbs_per_seg - 1));
++		seg->trbs[ring->trbs_per_seg - 1].link.control &=
+ 			cpu_to_le32(~TRB_CYCLE);
+ 		seg = seg->next;
+ 	} while (seg != ring->deq_seg);
+@@ -878,7 +878,7 @@ static void xhci_clear_command_ring(stru
+ 	ring->enq_seg = ring->deq_seg;
+ 	ring->enqueue = ring->dequeue;
+ 
+-	ring->num_trbs_free = ring->num_segs * (TRBS_PER_SEGMENT - 1) - 1;
++	ring->num_trbs_free = ring->num_segs * (ring->trbs_per_seg - 1) - 1;
+ 	/*
+ 	 * Ring is now zeroed, so the HW should look for change of ownership
+ 	 * when the cycle bit is set to 1.
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1635,6 +1635,7 @@ struct xhci_ring {
+ 	unsigned int		num_trbs_free;
+ 	unsigned int		num_trbs_free_temp;
+ 	unsigned int		bounce_buf_len;
++	unsigned int		trbs_per_seg;
+ 	enum xhci_ring_type	type;
+ 	bool			last_td_was_short;
+ 	struct radix_tree_root	*trb_address_map;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0606-usb-xhci-add-VLI_TRB_CACHE_BUG-quirk.patch b/target/linux/bcm27xx/patches-5.15/950-0606-usb-xhci-add-VLI_TRB_CACHE_BUG-quirk.patch
new file mode 100644
index 0000000000..82df4b408c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0606-usb-xhci-add-VLI_TRB_CACHE_BUG-quirk.patch
@@ -0,0 +1,73 @@
+From a1d5ce866f2e2062246343af757c22e9abe4e844 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Mon, 13 Dec 2021 16:04:03 +0000
+Subject: [PATCH] usb: xhci: add VLI_TRB_CACHE_BUG quirk
+
+The VL805 fetches up to 4 transfer TRBs at a time. TRB reads don't cross
+a 64B boundary, and if a TRB is fetched and is not on a 64B boundary,
+the read is sized up to the next 64B boundary.
+
+However the VL805 implements a readahead prefetch for TRBs on a transfer
+ring. This fetches the next 64B after any TRB read has happened. Near
+the end of a ring segment, the prefetcher can read the first 64B of the
+next page in physical memory and this is where the behaviour causes a
+bug.
+
+The controller does not tag reads with which endpoint they are for, so
+if the start of the next page is a ring segment used by a victim
+endpoint, and the victim endpoint is about to fetch TRBs from the start
+of the segment, the victim endpoint will read from the prefetched data
+and not perform a read to main memory. If the data is stale, the ring
+cycle state bit may not be correct and the endpoint will silently halt.
+
+Adjust trbs_per_seg for transfer rings allocated for this controller.
+
+See https://github.com/raspberrypi/linux/issues/4685
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/xhci-mem.c | 11 +++++++++++
+ drivers/usb/host/xhci-pci.c |  1 +
+ drivers/usb/host/xhci.h     |  1 +
+ 3 files changed, 13 insertions(+)
+
+--- a/drivers/usb/host/xhci-mem.c
++++ b/drivers/usb/host/xhci-mem.c
+@@ -392,6 +392,17 @@ struct xhci_ring *xhci_ring_alloc(struct
+ 		return ring;
+ 
+ 	ring->trbs_per_seg = TRBS_PER_SEGMENT;
++	/*
++	 * The Via VL805 has a bug where cache readahead will fetch off the end
++	 * of a page if the Link TRB of a transfer ring is in the last 4 slots.
++	 * Where there are consecutive physical pages containing ring segments,
++	 * this can cause a desync between the controller's view of a ring
++	 * and the host.
++	 */
++	if (xhci->quirks & XHCI_VLI_TRB_CACHE_BUG &&
++	    type != TYPE_EVENT && type != TYPE_COMMAND)
++		ring->trbs_per_seg -= 4;
++
+ 	ret = xhci_alloc_segments_for_ring(xhci, &ring->first_seg,
+ 			&ring->last_seg, num_segs, ring->trbs_per_seg,
+ 			cycle_state, type, max_packet, flags);
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -299,6 +299,7 @@ static void xhci_pci_quirks(struct devic
+ 		xhci->quirks |= XHCI_LPM_SUPPORT;
+ 		xhci->quirks |= XHCI_EP_CTX_BROKEN_DCS;
+ 		xhci->quirks |= XHCI_AVOID_DQ_ON_LINK;
++		xhci->quirks |= XHCI_VLI_TRB_CACHE_BUG;
+ 	}
+ 
+ 	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1905,6 +1905,7 @@ struct xhci_hcd {
+ #define XHCI_BROKEN_D3COLD	BIT_ULL(41)
+ #define XHCI_EP_CTX_BROKEN_DCS	BIT_ULL(42)
+ #define XHCI_AVOID_DQ_ON_LINK	BIT_ULL(43)
++#define XHCI_VLI_TRB_CACHE_BUG	BIT_ULL(44)
+ 
+ 	unsigned int		num_active_eps;
+ 	unsigned int		limit_active_eps;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0607-drm-vc4-Fix-build-without-DRM_VC4_HDMI_CEC.patch b/target/linux/bcm27xx/patches-5.15/950-0607-drm-vc4-Fix-build-without-DRM_VC4_HDMI_CEC.patch
new file mode 100644
index 0000000000..ac2e8e9839
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0607-drm-vc4-Fix-build-without-DRM_VC4_HDMI_CEC.patch
@@ -0,0 +1,25 @@
+From 977d51f1d3f7058a4bcde2b3f6497880ccd5db6c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 14 Dec 2021 21:53:18 +0000
+Subject: [PATCH] drm/vc4: Fix build without DRM_VC4_HDMI_CEC
+
+As reported by @asavah.
+
+Fixes: https://github.com/raspberrypi/linux/issues/4771
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -2280,7 +2280,7 @@ static int vc4_hdmi_cec_init(struct vc4_
+ 
+ static void vc4_hdmi_cec_exit(struct vc4_hdmi *vc4_hdmi) {};
+ 
+-static void vc4_hdmi_cec_resume(struct vc4_hdmi *vc4_hdmi)
++static int vc4_hdmi_cec_resume(struct vc4_hdmi *vc4_hdmi)
+ {
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0608-dt-Create-static-regulators-and-clocks-for-camera-no.patch b/target/linux/bcm27xx/patches-5.15/950-0608-dt-Create-static-regulators-and-clocks-for-camera-no.patch
new file mode 100644
index 0000000000..fa83feda9e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0608-dt-Create-static-regulators-and-clocks-for-camera-no.patch
@@ -0,0 +1,383 @@
+From 322899a48088cb09b3f2a068f78c93a63615da9e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 20 Nov 2021 10:48:36 +0000
+Subject: [PATCH] dt: Create static regulators and clocks for camera
+ nodes
+
+Unloading regulators through dynamic device tree doesn't work
+as the regulators will unregister whilst clients are still
+registered. Whilst the regulator framework does WARN when that
+happens, the client putting the regulator then typically results
+in a NULL dereference and badness.
+
+Instead of creating regulators and clocks from the overlays,
+create regulators and clocks for the sensors in the base DT.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2708-rpi-b-plus.dts      |  4 ++-
+ arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts      |  4 ++-
+ arch/arm/boot/dts/bcm2708-rpi-b.dts           |  4 ++-
+ arch/arm/boot/dts/bcm2708-rpi-cm.dts          | 21 ++++--------
+ arch/arm/boot/dts/bcm2708-rpi-zero-w.dts      |  4 ++-
+ arch/arm/boot/dts/bcm2708-rpi-zero.dts        |  4 ++-
+ arch/arm/boot/dts/bcm2709-rpi-2-b.dts         |  4 ++-
+ arch/arm/boot/dts/bcm270x.dtsi                | 33 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-2-b.dts         |  4 ++-
+ arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts    |  4 ++-
+ arch/arm/boot/dts/bcm2710-rpi-3-b.dts         |  4 ++-
+ arch/arm/boot/dts/bcm2710-rpi-cm3.dts         | 21 ++++--------
+ arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts    |  4 ++-
+ arch/arm/boot/dts/bcm2711-rpi-4-b.dts         |  4 ++-
+ arch/arm/boot/dts/bcm2711-rpi-cm4.dts         |  1 -
+ .../boot/dts/bcm283x-rpi-cam1-regulator.dtsi  | 10 ------
+ 16 files changed, 80 insertions(+), 50 deletions(-)
+ delete mode 100644 arch/arm/boot/dts/bcm283x-rpi-cam1-regulator.dtsi
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
+@@ -5,7 +5,6 @@
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_28.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
+@@ -116,6 +115,9 @@
+ 	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
+@@ -4,7 +4,6 @@
+ #include "bcm2708-rpi.dtsi"
+ #include "bcm283x-rpi-smsc9512.dtsi"
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,model-b", "brcm,bcm2835";
+@@ -123,6 +122,9 @@ i2c_csi_dsi: &i2c1 {
+ 	gpio = <&gpio 27 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2708-rpi-b.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
+@@ -5,7 +5,6 @@
+ #include "bcm283x-rpi-smsc9512.dtsi"
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_28.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,model-b", "brcm,bcm2835";
+@@ -110,6 +109,9 @@
+ 	gpio = <&gpio 21 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
+@@ -8,21 +8,14 @@
+ / {
+ 	compatible = "raspberrypi,compute-module", "brcm,bcm2835";
+ 	model = "Raspberry Pi Compute Module";
++};
++
++&cam1_reg {
++	gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++};
+ 
+-	cam1_reg: cam1_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam1-regulator";
+-		gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
+-		enable-active-high;
+-		status = "disabled";
+-	};
+-	cam0_reg: cam0_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam0-regulator";
+-		gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
+-		enable-active-high;
+-		status = "disabled";
+-	};
++cam0_reg: &cam0_regulator {
++	gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
+ };
+ 
+ &uart0 {
+--- a/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
+@@ -5,7 +5,6 @@
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_28.dtsi"
+ #include "bcm2708-rpi-bt.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
+@@ -167,6 +166,9 @@
+ 	gpio = <&gpio 44 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2708-rpi-zero.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero.dts
+@@ -4,7 +4,6 @@
+ #include "bcm2708-rpi.dtsi"
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_28.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,model-zero", "brcm,bcm2835";
+@@ -114,6 +113,9 @@
+ 	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+@@ -5,7 +5,6 @@
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_28.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
+@@ -116,6 +115,9 @@
+ 	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm270x.dtsi
++++ b/arch/arm/boot/dts/bcm270x.dtsi
+@@ -153,6 +153,39 @@
+ 		};
+ 	};
+ 
++	cam1_reg: cam1_regulator {
++		compatible = "regulator-fixed";
++		regulator-name = "cam1-reg";
++		enable-active-high;
++		/* Needs to be enabled, as removing a regulator is very unsafe */
++		status = "okay";
++	};
++
++	cam1_clk: cam1_clk {
++		compatible = "fixed-clock";
++		#clock-cells = <0>;
++		status = "disabled";
++	};
++
++	cam0_regulator: cam0_regulator {
++		compatible = "regulator-fixed";
++		regulator-name = "cam0-reg";
++		enable-active-high;
++		status = "disabled";
++	};
++
++	cam0_clk: cam0_clk {
++		compatible = "fixed-clock";
++		#clock-cells = <0>;
++		status = "disabled";
++	};
++
++	cam_dummy_reg: cam_dummy_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam-dummy-reg";
++		status = "okay";
++	};
++
+ 	__overrides__ {
+ 		cam0-pwdn-ctrl;
+ 		cam0-pwdn;
+--- a/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
+@@ -5,7 +5,6 @@
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_28.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,2-model-b-rev2", "brcm,bcm2837";
+@@ -116,6 +115,9 @@
+ 	gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
+@@ -6,7 +6,6 @@
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+ #include "bcm271x-rpi-bt.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
+@@ -188,6 +187,9 @@
+ 	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+@@ -6,7 +6,6 @@
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+ #include "bcm271x-rpi-bt.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
+@@ -197,6 +196,9 @@
+ 	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+@@ -8,21 +8,14 @@
+ / {
+ 	compatible = "raspberrypi,3-compute-module", "brcm,bcm2837";
+ 	model = "Raspberry Pi Compute Module 3";
++};
++
++&cam1_reg {
++	gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++};
+ 
+-	cam1_reg: cam1_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam1-regulator";
+-		gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
+-		enable-active-high;
+-		status = "disabled";
+-	};
+-	cam0_reg: cam0_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam0-regulator";
+-		gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
+-		enable-active-high;
+-		status = "disabled";
+-	};
++cam0_reg: &cam0_regulator {
++	gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
+ };
+ 
+ &uart0 {
+--- a/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+@@ -5,7 +5,6 @@
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+ #include "bcm2708-rpi-bt.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	compatible = "raspberrypi,model-zero-2-w", "brcm,bcm2837";
+@@ -188,6 +187,9 @@
+ 	gpio = <&gpio 40 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+@@ -279,7 +279,6 @@
+ #include "bcm2711-rpi-ds.dtsi"
+ #include "bcm283x-rpi-csi1-2lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	chosen {
+@@ -548,6 +547,9 @@
+ 	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
+ };
+ 
++cam0_reg: &cam_dummy_reg {
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+@@ -297,7 +297,6 @@
+ #include "bcm283x-rpi-csi0-2lane.dtsi"
+ #include "bcm283x-rpi-csi1-4lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	chosen {
+--- a/arch/arm/boot/dts/bcm283x-rpi-cam1-regulator.dtsi
++++ /dev/null
+@@ -1,10 +0,0 @@
+-// SPDX-License-Identifier: GPL-2.0
+-
+-/ {
+-	cam1_reg: cam1_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam1-reg";
+-		enable-active-high;
+-		status = "disabled";
+-	};
+-};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0609-dtoverlays-Convert-the-camera-sensor-overlays-to-use.patch b/target/linux/bcm27xx/patches-5.15/950-0609-dtoverlays-Convert-the-camera-sensor-overlays-to-use.patch
new file mode 100644
index 0000000000..6d7203b3bc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0609-dtoverlays-Convert-the-camera-sensor-overlays-to-use.patch
@@ -0,0 +1,474 @@
+From f8b75a1bcdbf2b5cc591079cafad3b94cc74ff48 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 20 Nov 2021 14:43:29 +0000
+Subject: [PATCH] dtoverlays: Convert the camera sensor overlays to use
+ the new regs and clks.
+
+Now that we have regulators and clocks defined in the base DT for
+image sensors, switch the overlays to use them.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/imx219-overlay.dts | 40 ++++---------------
+ .../boot/dts/overlays/imx290_327-overlay.dtsi | 40 ++++---------------
+ .../boot/dts/overlays/imx477_378-overlay.dtsi | 31 +++-----------
+ arch/arm/boot/dts/overlays/imx519-overlay.dts | 38 +++---------------
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts | 18 +++++----
+ arch/arm/boot/dts/overlays/ov7251-overlay.dts | 37 +++--------------
+ arch/arm/boot/dts/overlays/ov9281-overlay.dts | 39 ++++--------------
+ 7 files changed, 50 insertions(+), 193 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/imx219-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+@@ -20,12 +20,12 @@
+ 				reg = <0x10>;
+ 				status = "okay";
+ 
+-				clocks = <&imx219_clk>;
++				clocks = <&cam1_clk>;
+ 				clock-names = "xclk";
+ 
+ 				VANA-supply = <&cam1_reg>;	/* 2.8v */
+-				VDIG-supply = <&imx219_vdig>;	/* 1.8v */
+-				VDDL-supply = <&imx219_vddl>;	/* 1.2v */
++				VDIG-supply = <&cam_dummy_reg>;	/* 1.8v */
++				VDDL-supply = <&cam_dummy_reg>;	/* 1.2v */
+ 
+ 				rotation = <180>;
+ 				orientation = <2>;
+@@ -68,26 +68,10 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target-path="/";
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			imx219_vdig: fixedregulator@1 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx219_vdig";
+-				regulator-min-microvolt = <1800000>;
+-				regulator-max-microvolt = <1800000>;
+-			};
+-			imx219_vddl: fixedregulator@2 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx219_vddl";
+-				regulator-min-microvolt = <1200000>;
+-				regulator-max-microvolt = <1200000>;
+-			};
+-
+-			imx219_clk: camera-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <24000000>;
+-			};
++			status = "okay";
++			clock-frequency = <24000000>;
+ 		};
+ 	};
+ 
+@@ -99,16 +83,6 @@
+ 	};
+ 
+ 	fragment@5 {
+-		target = <&cam1_reg>;
+-		__overlay__ {
+-			status = "okay";
+-			regulator-name = "imx219_vana";
+-			regulator-min-microvolt = <2800000>;
+-			regulator-max-microvolt = <2800000>;
+-		};
+-	};
+-
+-	fragment@6 {
+ 		target = <&csi1>;
+ 		__overlay__ {
+ 			brcm,media-controller;
+@@ -118,6 +92,6 @@
+ 	__overrides__ {
+ 		rotation = <&imx219>,"rotation:0";
+ 		orientation = <&imx219>,"orientation:0";
+-		media-controller = <0>,"=6";
++		media-controller = <0>,"=5";
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
++++ b/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
+@@ -20,7 +20,7 @@
+ 				reg = <0x1a>;
+ 				status = "okay";
+ 
+-				clocks = <&imx290_clk>;
++				clocks = <&cam1_clk>;
+ 				clock-names = "xclk";
+ 				clock-frequency = <37125000>;
+ 
+@@ -28,8 +28,8 @@
+ 				orientation = <2>;
+ 
+ 				vdda-supply = <&cam1_reg>;	/* 2.8v */
+-				vdddo-supply = <&imx290_vdddo>;	/* 1.8v */
+-				vddd-supply = <&imx290_vddd>;	/* 1.5v */
++				vdddo-supply = <&cam_dummy_reg>;	/* 1.8v */
++				vddd-supply = <&cam_dummy_reg>;	/* 1.5v */
+ 
+ 				port {
+ 					imx290_0: endpoint {
+@@ -62,26 +62,10 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target-path="/";
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			imx290_vdddo: fixedregulator@1 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx290_vdddo";
+-				regulator-min-microvolt = <1800000>;
+-				regulator-max-microvolt = <1800000>;
+-			};
+-			imx290_vddd: fixedregulator@2 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx290_vddd";
+-				regulator-min-microvolt = <1500000>;
+-				regulator-max-microvolt = <1500000>;
+-			};
+-
+-			imx290_clk: camera-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <37125000>;
+-			};
++			status = "okay";
++			clock-frequency = <37125000>;
+ 		};
+ 	};
+ 
+@@ -92,16 +76,6 @@
+ 		};
+ 	};
+ 
+-	fragment@5 {
+-		target = <&cam1_reg>;
+-		__overlay__ {
+-			status = "okay";
+-			regulator-name = "imx290_vdda";
+-			regulator-min-microvolt = <2800000>;
+-			regulator-max-microvolt = <2800000>;
+-		};
+-	};
+-
+ 	fragment@6 {
+ 		target = <&imx290_0>;
+ 		__overlay__ {
+@@ -143,7 +117,7 @@
+ 
+ 	__overrides__ {
+ 		4lane = <0>, "-6+7-8+9";
+-		clock-frequency = <&imx290_clk>,"clock-frequency:0",
++		clock-frequency = <&cam1_clk>,"clock-frequency:0",
+ 				  <&imx290>,"clock-frequency:0";
+ 		rotation = <&imx290>,"rotation:0";
+ 		orientation = <&imx290>,"orientation:0";
+--- a/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
++++ b/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
+@@ -15,12 +15,12 @@
+ 				reg = <0x1a>;
+ 				status = "okay";
+ 
+-				clocks = <&imx477_clk>;
++				clocks = <&cam1_clk>;
+ 				clock-names = "xclk";
+ 
+ 				VANA-supply = <&cam1_reg>;	/* 2.8v */
+-				VDIG-supply = <&imx477_vdig>;	/* 1.05v */
+-				VDDL-supply = <&imx477_vddl>;	/* 1.8v */
++				VDIG-supply = <&cam_dummy_reg>;	/* 1.05v */
++				VDDL-supply = <&cam_dummy_reg>;	/* 1.8v */
+ 
+ 				rotation = <180>;
+ 				orientation = <2>;
+@@ -63,25 +63,10 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target-path="/";
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			imx477_vdig: fixedregulator@0 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx477_vdig";
+-				regulator-min-microvolt = <1050000>;
+-				regulator-max-microvolt = <1050000>;
+-			};
+-			imx477_vddl: fixedregulator@1 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx477_vddl";
+-				regulator-min-microvolt = <1800000>;
+-				regulator-max-microvolt = <1800000>;
+-			};
+-			imx477_clk: camera-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <24000000>;
+-			};
++			clock-frequency = <24000000>;
++			status = "okay";
+ 		};
+ 	};
+ 
+@@ -95,11 +80,7 @@
+ 	fragment@5 {
+ 		target = <&cam1_reg>;
+ 		__overlay__ {
+-			status = "okay";
+-			regulator-name = "imx477_vana";
+ 			startup-delay-us = <300000>;
+-			regulator-min-microvolt = <2800000>;
+-			regulator-max-microvolt = <2800000>;
+ 		};
+ 	};
+ 
+--- a/arch/arm/boot/dts/overlays/imx519-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx519-overlay.dts
+@@ -20,12 +20,12 @@
+ 				reg = <0x1a>;
+ 				status = "okay";
+ 
+-				clocks = <&imx519_clk>;
++				clocks = <&cam1_clk>;
+ 				clock-names = "xclk";
+ 
+ 				VANA-supply = <&cam1_reg>;	/* 2.8v */
+-				VDIG-supply = <&imx519_vdig>;	/* 1.8v */
+-				VDDL-supply = <&imx519_vddl>;	/* 1.2v */
++				VDIG-supply = <&cam_dummy_reg>;	/* 1.8v */
++				VDDL-supply = <&cam_dummy_reg>;	/* 1.2v */
+ 
+ 				rotation = <0>;
+ 				orientation = <2>;
+@@ -68,26 +68,10 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target-path="/";
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			imx519_vdig: fixedregulator@1 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx519_vdig";
+-				regulator-min-microvolt = <1800000>;
+-				regulator-max-microvolt = <1800000>;
+-			};
+-			imx519_vddl: fixedregulator@2 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "imx519_vddl";
+-				regulator-min-microvolt = <1200000>;
+-				regulator-max-microvolt = <1200000>;
+-			};
+-
+-			imx519_clk: camera-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <24000000>;
+-			};
++			clock-frequency = <24000000>;
++			status = "okay";
+ 		};
+ 	};
+ 
+@@ -98,16 +82,6 @@
+ 		};
+ 	};
+ 
+-	fragment@5 {
+-		target = <&cam1_reg>;
+-		__overlay__ {
+-			status = "okay";
+-			regulator-name = "imx519_vana";
+-			regulator-min-microvolt = <2800000>;
+-			regulator-max-microvolt = <2800000>;
+-		};
+-	};
+-
+ 	fragment@6 {
+ 		target = <&csi1>;
+ 		__overlay__ {
+--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -19,7 +19,7 @@
+ 				status = "okay";
+ 
+ 				pwdn-gpios = <&gpio 41 1>, <&gpio 32 1>;
+-				clocks = <&ov5647_clk>;
++				clocks = <&cam1_clk>;
+ 
+ 				rotation = <0>;
+ 				orientation = <2>;
+@@ -77,13 +77,10 @@
+ 	};
+ 
+ 	fragment@5 {
+-		target-path = "/";
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			ov5647_clk: camera-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <25000000>;
+-			};
++			status = "okay";
++			clock-frequency = <25000000>;
+ 		};
+ 	};
+ 
+@@ -94,6 +91,13 @@
+ 		};
+ 	};
+ 
++	fragment@7 {
++		target = <&cam1_reg>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
+ 	__overrides__ {
+ 		rotation = <&ov5647>,"rotation:0";
+ 		orientation = <&ov5647>,"orientation:0";
+--- a/arch/arm/boot/dts/overlays/ov7251-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+@@ -20,13 +20,13 @@
+ 				reg = <0x60>;
+ 				status = "okay";
+ 
+-				clocks = <&ov7251_clk>;
++				clocks = <&cam1_clk>;
+ 				clock-names = "xclk";
+ 				clock-frequency = <24000000>;
+ 
+-				vdddo-supply = <&ov7251_dovdd>;
++				vdddo-supply = <&cam_dummy_reg>;
+ 				vdda-supply = <&cam1_reg>;
+-				vddd-supply = <&ov7251_dvdd>;
++				vddd-supply = <&cam_dummy_reg>;
+ 
+ 				rotation = <0>;
+ 				orientation = <2>;
+@@ -67,25 +67,10 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target-path="/";
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			ov7251_dovdd: fixedregulator@1 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "ov7251_dovdd";
+-				regulator-min-microvolt = <1800000>;
+-				regulator-max-microvolt = <1800000>;
+-			};
+-			ov7251_dvdd: fixedregulator@2 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "ov7251_dvdd";
+-				regulator-min-microvolt = <1200000>;
+-				regulator-max-microvolt = <1200000>;
+-			};
+-			ov7251_clk: ov7251-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <24000000>;
+-			};
++			status = "okay";
++			clock-frequency = <24000000>;
+ 		};
+ 	};
+ 
+@@ -96,16 +81,6 @@
+ 		};
+ 	};
+ 
+-	fragment@5 {
+-		target = <&cam1_reg>;
+-		__overlay__ {
+-			status = "okay";
+-			regulator-name = "ov7251_avdd";
+-			regulator-min-microvolt = <2800000>;
+-			regulator-max-microvolt = <2800000>;
+-		};
+-	};
+-
+ 	fragment@6 {
+ 		target = <&csi1>;
+ 		__dormant__ {
+--- a/arch/arm/boot/dts/overlays/ov9281-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
+@@ -20,12 +20,12 @@
+ 				reg = <0x60>;
+ 				status = "okay";
+ 
+-				clocks = <&ov9281_clk>;
++				clocks = <&cam1_clk>;
+ 				clock-names = "xvclk";
+ 
+ 				avdd-supply = <&cam1_reg>;
+-				dovdd-supply = <&ov9281_dovdd>;
+-				dvdd-supply = <&ov9281_dvdd>;
++				dovdd-supply = <&cam_dummy_reg>;
++				dvdd-supply = <&cam_dummy_reg>;
+ 
+ 				rotation = <0>;
+ 				orientation = <2>;
+@@ -67,25 +67,10 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target-path="/";
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			ov9281_dovdd: fixedregulator@1 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "ov9281_dovdd";
+-				regulator-min-microvolt = <1800000>;
+-				regulator-max-microvolt = <1800000>;
+-			};
+-			ov9281_dvdd: fixedregulator@2 {
+-				compatible = "regulator-fixed";
+-				regulator-name = "ov9281_dvdd";
+-				regulator-min-microvolt = <1200000>;
+-				regulator-max-microvolt = <1200000>;
+-			};
+-			ov9281_clk: ov9281-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <24000000>;
+-			};
++			status = "okay";
++			clock-frequency = <24000000>;
+ 		};
+ 	};
+ 
+@@ -97,16 +82,6 @@
+ 	};
+ 
+ 	fragment@5 {
+-		target = <&cam1_reg>;
+-		__overlay__ {
+-			status = "okay";
+-			regulator-name = "ov9281_avdd";
+-			regulator-min-microvolt = <2800000>;
+-			regulator-max-microvolt = <2800000>;
+-		};
+-	};
+-
+-	fragment@6 {
+ 		target = <&csi1>;
+ 		__overlay__ {
+ 			brcm,media-controller;
+@@ -116,6 +91,6 @@
+ 	__overrides__ {
+ 		rotation = <&ov9281>,"rotation:0";
+ 		orientation = <&ov9281>,"orientation:0";
+-		media-controller = <0>,"=6";
++		media-controller = <0>,"=5";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch b/target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch
new file mode 100644
index 0000000000..ec8a612476
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch
@@ -0,0 +1,111 @@
+From 659037c028f28ac0f13bd54a55c6c81761fb02ce Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 22 Nov 2021 12:31:35 +0000
+Subject: [PATCH] media: i2c: ov5647: Add support for regulator
+ control.
+
+The driver supported using GPIOs to control the shutdown line,
+but no regulator control.
+
+Add regulator hooks.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 37 +++++++++++++++++++++++++++++++++++++
+ 1 file changed, 37 insertions(+)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -20,6 +20,7 @@
+ #include <linux/module.h>
+ #include <linux/of_graph.h>
+ #include <linux/pm_runtime.h>
++#include <linux/regulator/consumer.h>
+ #include <linux/slab.h>
+ #include <linux/videodev2.h>
+ #include <media/v4l2-ctrls.h>
+@@ -82,6 +83,15 @@
+ #define OV5647_EXPOSURE_DEFAULT		1000
+ #define OV5647_EXPOSURE_MAX		65535
+ 
++/* regulator supplies */
++static const char * const ov5647_supply_names[] = {
++	"avdd",		/* Analog power */
++	"dovdd",	/* Digital I/O power */
++	"dvdd",		/* Digital core power */
++};
++
++#define OV5647_NUM_SUPPLIES ARRAY_SIZE(ov5647_supply_names)
++
+ struct regval_list {
+ 	u16 addr;
+ 	u8 data;
+@@ -103,6 +113,7 @@ struct ov5647 {
+ 	struct mutex			lock;
+ 	struct clk			*xclk;
+ 	struct gpio_desc		*pwdn;
++	struct regulator_bulk_data supplies[OV5647_NUM_SUPPLIES];
+ 	bool				clock_ncont;
+ 	struct v4l2_ctrl_handler	ctrls;
+ 	const struct ov5647_mode	*mode;
+@@ -787,6 +798,12 @@ static int ov5647_power_on(struct device
+ 
+ 	dev_dbg(dev, "OV5647 power on\n");
+ 
++	ret = regulator_bulk_enable(OV5647_NUM_SUPPLIES, sensor->supplies);
++	if (ret < 0) {
++		dev_err(dev, "Failed to enable regulators\n");
++		return ret;
++	}
++
+ 	if (sensor->pwdn) {
+ 		gpiod_set_value_cansleep(sensor->pwdn, 0);
+ 		msleep(PWDN_ACTIVE_DELAY_MS);
+@@ -818,6 +835,7 @@ error_clk_disable:
+ 	clk_disable_unprepare(sensor->xclk);
+ error_pwdn:
+ 	gpiod_set_value_cansleep(sensor->pwdn, 1);
++	regulator_bulk_disable(OV5647_NUM_SUPPLIES, sensor->supplies);
+ 
+ 	return ret;
+ }
+@@ -847,6 +865,7 @@ static int ov5647_power_off(struct devic
+ 
+ 	clk_disable_unprepare(sensor->xclk);
+ 	gpiod_set_value_cansleep(sensor->pwdn, 1);
++	regulator_bulk_disable(OV5647_NUM_SUPPLIES, sensor->supplies);
+ 
+ 	return 0;
+ }
+@@ -1347,6 +1366,18 @@ static const struct v4l2_ctrl_ops ov5647
+ 	.s_ctrl = ov5647_s_ctrl,
+ };
+ 
++static int ov5647_configure_regulators(struct device *dev,
++				       struct ov5647 *sensor)
++{
++	unsigned int i;
++
++	for (i = 0; i < OV5647_NUM_SUPPLIES; i++)
++		sensor->supplies[i].supply = ov5647_supply_names[i];
++
++	return devm_regulator_bulk_get(dev, OV5647_NUM_SUPPLIES,
++				       sensor->supplies);
++}
++
+ static int ov5647_init_controls(struct ov5647 *sensor, struct device *dev)
+ {
+ 	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
+@@ -1494,6 +1525,12 @@ static int ov5647_probe(struct i2c_clien
+ 		return -EINVAL;
+ 	}
+ 
++	ret = ov5647_configure_regulators(dev, sensor);
++	if (ret) {
++		dev_err(dev, "Failed to get power regulators\n");
++		return ret;
++	}
++
+ 	mutex_init(&sensor->lock);
+ 
+ 	sensor->mode = OV5647_DEFAULT_MODE;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0611-dtoverlays-Convert-ov5647-to-use-the-regulator-frame.patch b/target/linux/bcm27xx/patches-5.15/950-0611-dtoverlays-Convert-ov5647-to-use-the-regulator-frame.patch
new file mode 100644
index 0000000000..b0fe1e20a5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0611-dtoverlays-Convert-ov5647-to-use-the-regulator-frame.patch
@@ -0,0 +1,48 @@
+From 395fb7877a140602e4247690ad02975259bcc6ab Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 22 Nov 2021 12:30:18 +0000
+Subject: [PATCH] dtoverlays: Convert ov5647 to use the regulator
+ framework
+
+Fixing up shutdown GPIOs via overrides is ugly, and doesn't work
+on eg CM4 where both cameras share the same shutdown GPIO.
+
+The driver is now updated to use the regulator framework, so switch
+to using that instead.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -18,9 +18,12 @@
+ 				reg = <0x36>;
+ 				status = "okay";
+ 
+-				pwdn-gpios = <&gpio 41 1>, <&gpio 32 1>;
+ 				clocks = <&cam1_clk>;
+ 
++				avdd-supply = <&cam1_reg>;
++				dovdd-supply = <&cam_dummy_reg>;
++				dvdd-supply = <&cam_dummy_reg>;
++
+ 				rotation = <0>;
+ 				orientation = <2>;
+ 
+@@ -67,12 +70,9 @@
+ 	};
+ 
+ 	fragment@4 {
+-		target-path="/__overrides__";
++		target = <&cam1_reg>;
+ 		__overlay__ {
+-			cam0-pwdn-ctrl = <&ov5647>,"pwdn-gpios:0";
+-			cam0-pwdn      = <&ov5647>,"pwdn-gpios:4";
+-			cam0-led-ctrl  = <&ov5647>,"pwdn-gpios:12";
+-			cam0-led       = <&ov5647>,"pwdn-gpios:16";
++			startup-delay-us = <20000>;
+ 		};
+ 	};
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0612-media-i2c-ov7251-Make-the-enable-GPIO-optional.patch b/target/linux/bcm27xx/patches-5.15/950-0612-media-i2c-ov7251-Make-the-enable-GPIO-optional.patch
new file mode 100644
index 0000000000..45010b6d3b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0612-media-i2c-ov7251-Make-the-enable-GPIO-optional.patch
@@ -0,0 +1,26 @@
+From eece4bace6f1899fdbef6315f11e0ef9957fdc05 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 14 Dec 2021 17:18:49 +0000
+Subject: [PATCH] media: i2c: ov7251: Make the enable GPIO optional.
+
+Not all implementations wire up the enable GPIO and may just tie
+it to a supply rail.
+Make it optional.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -1334,7 +1334,8 @@ static int ov7251_probe(struct i2c_clien
+ 		return PTR_ERR(ov7251->analog_regulator);
+ 	}
+ 
+-	ov7251->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
++	ov7251->enable_gpio = devm_gpiod_get_optional(dev, "enable",
++						      GPIOD_OUT_HIGH);
+ 	if (IS_ERR(ov7251->enable_gpio)) {
+ 		dev_err(dev, "cannot get enable gpio\n");
+ 		return PTR_ERR(ov7251->enable_gpio);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0613-ARM-dts-bcm2711-cm4s-Correct-i2c0mux-to-use-0-1-and-.patch b/target/linux/bcm27xx/patches-5.15/950-0613-ARM-dts-bcm2711-cm4s-Correct-i2c0mux-to-use-0-1-and-.patch
new file mode 100644
index 0000000000..82bd6ce888
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0613-ARM-dts-bcm2711-cm4s-Correct-i2c0mux-to-use-0-1-and-.patch
@@ -0,0 +1,49 @@
+From 46fbde5380a7a1707e19ac46842cb9ce526c5216 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 14 Dec 2021 14:54:15 +0000
+Subject: [PATCH] ARM: dts: bcm2711-cm4s Correct i2c0mux to use 0/1 and
+ 28/29 & 2 regulators
+
+CM4S follows CM1/3, so based on the documentation cameras/displays
+connect to 0/1 and 28/29, not 0/1 and 44/45.
+
+Likewise the camera regulator controls are independent as on CM1/3.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-cm4s.dts | 18 ++++++++++++++++--
+ 1 file changed, 16 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
+@@ -155,14 +155,28 @@
+ 
+ #include "bcm283x-rpi-csi0-2lane.dtsi"
+ #include "bcm283x-rpi-csi1-4lane.dtsi"
+-#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+-#include "bcm283x-rpi-cam1-regulator.dtsi"
++#include "bcm283x-rpi-i2c0mux_0_28.dtsi"
+ 
+ / {
+ 	chosen {
+ 		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
+ 	};
+ 
++	cam1_reg: cam1_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam1-regulator";
++		gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++		enable-active-high;
++		status = "disabled";
++	};
++	cam0_reg: cam0_reg {
++		compatible = "regulator-fixed";
++		regulator-name = "cam0-regulator";
++		gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
++		enable-active-high;
++		status = "disabled";
++	};
++
+ 	aliases {
+ 		serial0 = &uart0;
+ 		mmc0 = &emmc2;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0614-dtoverlays-Add-option-to-select-camera-as-on-CAM0-of.patch b/target/linux/bcm27xx/patches-5.15/950-0614-dtoverlays-Add-option-to-select-camera-as-on-CAM0-of.patch
new file mode 100644
index 0000000000..5bc7e7137f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0614-dtoverlays-Add-option-to-select-camera-as-on-CAM0-of.patch
@@ -0,0 +1,944 @@
+From 0bda3692e0fa20e793ad3857a6ffde6bca7d49ca Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 22 Nov 2021 12:44:29 +0000
+Subject: [PATCH] dtoverlays: Add option to select camera as on CAM0 of
+ CM
+
+Parameterise the overlays so that they can have an optional
+cam0 parameter to switch to i2c_vc and csi0.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2708-rpi-cm.dts          |  1 +
+ arch/arm/boot/dts/bcm2708-rpi-cm.dtsi         |  4 +
+ arch/arm/boot/dts/bcm2710-rpi-cm3.dts         |  5 ++
+ arch/arm/boot/dts/bcm2711-rpi-cm4s.dts        | 25 +++---
+ arch/arm/boot/dts/overlays/README             | 30 +++++++
+ arch/arm/boot/dts/overlays/imx219-overlay.dts | 67 ++++++++-------
+ .../boot/dts/overlays/imx290_327-overlay.dtsi | 27 +++---
+ .../boot/dts/overlays/imx477_378-overlay.dtsi | 84 +++++++++----------
+ arch/arm/boot/dts/overlays/imx519-overlay.dts | 23 +++--
+ .../arm/boot/dts/overlays/irs1125-overlay.dts | 35 ++++----
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts | 33 +++-----
+ arch/arm/boot/dts/overlays/ov7251-overlay.dts | 28 +++----
+ arch/arm/boot/dts/overlays/ov9281-overlay.dts | 29 ++++---
+ .../boot/dts/overlays/tc358743-overlay.dts    | 43 ++++------
+ 14 files changed, 221 insertions(+), 213 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
+@@ -12,6 +12,7 @@
+ 
+ &cam1_reg {
+ 	gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++	status = "disabled";
+ };
+ 
+ cam0_reg: &cam0_regulator {
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
+@@ -14,5 +14,9 @@
+ 		act_led_gpio = <&act_led>,"gpios:4";
+ 		act_led_activelow = <&act_led>,"gpios:8";
+ 		act_led_trigger = <&act_led>,"linux,default-trigger";
++		cam0_reg = <&cam0_reg>,"status";
++		cam0_reg_gpio = <&cam0_reg>,"gpios:4";
++		cam1_reg = <&cam1_reg>,"status";
++		cam1_reg_gpio = <&cam1_reg>,"gpios:4";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+@@ -12,6 +12,7 @@
+ 
+ &cam1_reg {
+ 	gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++	status = "disabled";
+ };
+ 
+ cam0_reg: &cam0_regulator {
+@@ -137,5 +138,9 @@ cam0_reg: &cam0_regulator {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+ 		act_led_activelow = <&act_led>,"gpios:8";
+ 		act_led_trigger = <&act_led>,"linux,default-trigger";
++		cam0_reg = <&cam0_reg>,"status";
++		cam0_reg_gpio = <&cam0_reg>,"gpios:4";
++		cam1_reg = <&cam1_reg>,"status";
++		cam1_reg_gpio = <&cam1_reg>,"gpios:4";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
+@@ -162,21 +162,6 @@
+ 		bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
+ 	};
+ 
+-	cam1_reg: cam1_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam1-regulator";
+-		gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
+-		enable-active-high;
+-		status = "disabled";
+-	};
+-	cam0_reg: cam0_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam0-regulator";
+-		gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
+-		enable-active-high;
+-		status = "disabled";
+-	};
+-
+ 	aliases {
+ 		serial0 = &uart0;
+ 		mmc0 = &emmc2;
+@@ -399,6 +384,16 @@
+ 	brcm,disable-headphones = <1>;
+ };
+ 
++&cam1_reg {
++	gpio = <&gpio 2 GPIO_ACTIVE_HIGH>;
++	status = "disabled";
++};
++
++cam0_reg: &cam0_regulator {
++	gpio = <&gpio 30 GPIO_ACTIVE_HIGH>;
++	status = "disabled";
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -144,6 +144,16 @@ Params:
+                                 See /sys/kernel/debug/raspberrypi_axi_monitor
+                                 for the results.
+ 
++        cam0_reg                Enables CAM 0 regulator. CM1 & 3 only.
++
++        cam0_reg_gpio           Set GPIO for CAM 0 regulator. Default 30.
++                                CM1 & 3 only.
++
++        cam1_reg                Enables CAM 1 regulator. CM1 & 3 only.
++
++        cam1_reg_gpio           Set GPIO for CAM 1 regulator. Default 2.
++                                CM1 & 3 only.
++
+         eee                     Enable Energy Efficient Ethernet support for
+                                 compatible devices (default "on"). See also
+                                 "tx_lpi_timer". Pi3B+ only.
+@@ -1845,6 +1855,8 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   imx290
+@@ -1867,6 +1879,8 @@ Params: 4lane                   Enable 4
+                                 180, default 0)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   imx378
+@@ -1880,6 +1894,8 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   imx477
+@@ -1893,6 +1909,8 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   imx519
+@@ -1906,6 +1924,8 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   iqaudio-codec
+@@ -1972,6 +1992,8 @@ Info:   Infineon irs1125 TOF camera modu
+ Load:   dtoverlay=irs1125,<param>=<val>
+ Params: media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default off)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   jedec-spi-nor
+@@ -2385,6 +2407,8 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   ov7251
+@@ -2398,6 +2422,8 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default off)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   ov9281
+@@ -2411,6 +2437,8 @@ Params: rotation                Mounting
+                                 2 = external, default external)
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   papirus
+@@ -3393,6 +3421,8 @@ Params: 4lane                   Use 4 la
+                                 are supported by the driver.
+         media-controller        Configure use of Media Controller API for
+                                 configuring the sensor (default off)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+ 
+ 
+ Name:   tc358743-audio
+--- a/arch/arm/boot/dts/overlays/imx219-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+@@ -9,6 +9,28 @@
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	clk_frag: fragment@1 {
++		target = <&cam1_clk>;
++		__overlay__ {
++			status = "okay";
++			clock-frequency = <24000000>;
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	i2c_frag: fragment@100 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -32,7 +54,7 @@
+ 
+ 				port {
+ 					imx219_0: endpoint {
+-						remote-endpoint = <&csi1_ep>;
++						remote-endpoint = <&csi_ep>;
+ 						clock-lanes = <0>;
+ 						data-lanes = <1 2>;
+ 						clock-noncontinuous;
+@@ -44,13 +66,14 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@101 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
++			brcm,media-controller;
+ 
+ 			port {
+-				csi1_ep: endpoint {
++				csi_ep: endpoint {
+ 					remote-endpoint = <&imx219_0>;
+ 					clock-lanes = <0>;
+ 					data-lanes = <1 2>;
+@@ -60,38 +83,14 @@
+ 		};
+ 	};
+ 
+-	fragment@2 {
+-		target = <&i2c0if>;
+-		__overlay__ {
+-			status = "okay";
+-		};
+-	};
+-
+-	fragment@3 {
+-		target = <&cam1_clk>;
+-		__overlay__ {
+-			status = "okay";
+-			clock-frequency = <24000000>;
+-		};
+-	};
+-
+-	fragment@4 {
+-		target = <&i2c0mux>;
+-		__overlay__ {
+-			status = "okay";
+-		};
+-	};
+-
+-	fragment@5 {
+-		target = <&csi1>;
+-		__overlay__ {
+-			brcm,media-controller;
+-		};
+-	};
+-
+ 	__overrides__ {
+ 		rotation = <&imx219>,"rotation:0";
+ 		orientation = <&imx219>,"orientation:0";
+-		media-controller = <0>,"=5";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&imx219>, "clocks:0=",<&cam0_clk>,
++		       <&imx219>, "VANA-supply:0=",<&cam0_reg>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
++++ b/arch/arm/boot/dts/overlays/imx290_327-overlay.dtsi
+@@ -9,7 +9,7 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	i2c_frag: fragment@0 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -41,10 +41,11 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@1 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
++			brcm,media-controller;
+ 
+ 			port {
+ 				csi1_ep: endpoint {
+@@ -61,9 +62,9 @@
+ 		};
+ 	};
+ 
+-	fragment@3 {
++	clk_frag: fragment@3 {
+ 		target = <&cam1_clk>;
+-		__overlay__ {
++		cam_clk: __overlay__ {
+ 			status = "okay";
+ 			clock-frequency = <37125000>;
+ 		};
+@@ -108,19 +109,17 @@
+ 		};
+ 	};
+ 
+-	fragment@10 {
+-		target = <&csi1>;
+-		__overlay__ {
+-			brcm,media-controller;
+-		};
+-	};
+-
+ 	__overrides__ {
+ 		4lane = <0>, "-6+7-8+9";
+-		clock-frequency = <&cam1_clk>,"clock-frequency:0",
++		clock-frequency = <&cam_clk>,"clock-frequency:0",
+ 				  <&imx290>,"clock-frequency:0";
+ 		rotation = <&imx290>,"rotation:0";
+ 		orientation = <&imx290>,"orientation:0";
+-		media-controller = <0>,"=10";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&imx290>, "clocks:0=",<&cam0_clk>,
++		       <&imx290>, "vdda-supply:0=",<&cam0_reg>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
++++ b/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
+@@ -4,7 +4,36 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	clk_frag: fragment@3 {
++		target = <&cam1_clk>;
++		cam_clk: __overlay__ {
++			clock-frequency = <24000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	reg_frag: fragment@5 {
++		target = <&cam1_reg>;
++		cam_reg: __overlay__ {
++			startup-delay-us = <300000>;
++		};
++	};
++
++	i2c_frag: fragment@100 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -27,7 +56,7 @@
+ 
+ 				port {
+ 					imx477_0: endpoint {
+-						remote-endpoint = <&csi1_ep>;
++						remote-endpoint = <&csi_ep>;
+ 						clock-lanes = <0>;
+ 						data-lanes = <1 2>;
+ 						clock-noncontinuous;
+@@ -39,13 +68,14 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@101 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
++			brcm,media-controller;
+ 
+ 			port {
+-				csi1_ep: endpoint {
++				csi_ep: endpoint {
+ 					remote-endpoint = <&imx477_0>;
+ 					clock-lanes = <0>;
+ 					data-lanes = <1 2>;
+@@ -55,45 +85,15 @@
+ 		};
+ 	};
+ 
+-	fragment@2 {
+-		target = <&i2c0if>;
+-		__overlay__ {
+-			status = "okay";
+-		};
+-	};
+-
+-	fragment@3 {
+-		target = <&cam1_clk>;
+-		__overlay__ {
+-			clock-frequency = <24000000>;
+-			status = "okay";
+-		};
+-	};
+-
+-	fragment@4 {
+-		target = <&i2c0mux>;
+-		__overlay__ {
+-			status = "okay";
+-		};
+-	};
+-
+-	fragment@5 {
+-		target = <&cam1_reg>;
+-		__overlay__ {
+-			startup-delay-us = <300000>;
+-		};
+-	};
+-
+-	fragment@6 {
+-		target = <&csi1>;
+-		__overlay__ {
+-			brcm,media-controller;
+-		};
+-	};
+-
+ 	__overrides__ {
+ 		rotation = <&imx477>,"rotation:0";
+ 		orientation = <&imx477>,"orientation:0";
+-		media-controller = <0>,"=6";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&reg_frag>, "target:0=",<&cam0_reg>,
++		       <&imx477>, "clocks:0=",<&cam0_clk>,
++		       <&imx477>, "vdda-supply:0=",<&cam0_reg>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/imx519-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx519-overlay.dts
+@@ -8,7 +8,7 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	i2c_frag: fragment@0 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -44,10 +44,11 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@1 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
++			brcm,media-controller;
+ 
+ 			port{
+ 				csi1_ep: endpoint{
+@@ -67,7 +68,7 @@
+ 		};
+ 	};
+ 
+-	fragment@3 {
++	clk_frag: fragment@3 {
+ 		target = <&cam1_clk>;
+ 		__overlay__ {
+ 			clock-frequency = <24000000>;
+@@ -82,16 +83,14 @@
+ 		};
+ 	};
+ 
+-	fragment@6 {
+-		target = <&csi1>;
+-		__overlay__ {
+-			brcm,media-controller;
+-		};
+-	};
+-
+ 	__overrides__ {
+ 		rotation = <&imx519>,"rotation:0";
+ 		orientation = <&imx519>,"orientation:0";
+-		media-controller = <0>,"=6";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&imx519>, "clocks:0=",<&cam0_clk>,
++		       <&imx519>, "VANA-supply:0=",<&cam0_reg>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/irs1125-overlay.dts
++++ b/arch/arm/boot/dts/overlays/irs1125-overlay.dts
+@@ -6,20 +6,20 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	i2c_frag: fragment@0 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+ 			#size-cells = <0>;
+ 			status = "okay";
+ 
+-			irs1125: irs1125@3D {
++			irs1125: irs1125@3d {
+ 				compatible = "infineon,irs1125";
+-				reg = <0x3D>;
++				reg = <0x3d>;
+ 				status = "okay";
+ 
+ 				pwdn-gpios = <&gpio 5 0>;
+-				clocks = <&irs1125_clk>;
++				clocks = <&cam1_clk>;
+ 
+ 				port {
+ 					irs1125_0: endpoint {
+@@ -35,9 +35,9 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@1 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
+ 
+ 			port {
+@@ -72,25 +72,18 @@
+ 		};
+ 	};
+ 
+-	fragment@5 {
+-		target-path = "/";
++	clk_frag: fragment@5 {
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			irs1125_clk: camera-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <26000000>;
+-			};
+-		};
+-	};
+-
+-	fragment@6 {
+-		target = <&csi1>;
+-		__dormant__ {
+-			brcm,media-controller;
++			clock-frequency = <26000000>;
+ 		};
+ 	};
+ 
+ 	__overrides__ {
+-		media-controller = <0>,"=6";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&irs1125>, "clocks:0=",<&cam0_clk>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -6,7 +6,7 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	i2c_frag: fragment@0 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -41,10 +41,11 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@1 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
++			brcm,media-controller;
+ 
+ 			port {
+ 				csi1_ep: endpoint {
+@@ -69,14 +70,14 @@
+ 		};
+ 	};
+ 
+-	fragment@4 {
++	reg_frag: fragment@4 {
+ 		target = <&cam1_reg>;
+ 		__overlay__ {
+ 			startup-delay-us = <20000>;
+ 		};
+ 	};
+ 
+-	fragment@5 {
++	clk_frag: fragment@5 {
+ 		target = <&cam1_clk>;
+ 		__overlay__ {
+ 			status = "okay";
+@@ -84,23 +85,15 @@
+ 		};
+ 	};
+ 
+-	fragment@6 {
+-		target = <&csi1>;
+-		__overlay__ {
+-			brcm,media-controller;
+-		};
+-	};
+-
+-	fragment@7 {
+-		target = <&cam1_reg>;
+-		__overlay__ {
+-			status = "disabled";
+-		};
+-	};
+-
+ 	__overrides__ {
+ 		rotation = <&ov5647>,"rotation:0";
+ 		orientation = <&ov5647>,"orientation:0";
+-		media-controller = <0>,"=6";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&reg_frag>, "target:0=",<&cam0_reg>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&ov5647>, "clocks:0=",<&cam0_clk>,
++		       <&ov5647>, "avdd-supply:0=",<&cam0_reg>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/ov7251-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+@@ -8,7 +8,7 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	i2c_frag: fragment@0 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -45,9 +45,9 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@1 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
+ 
+ 			port {
+@@ -67,30 +67,28 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target = <&cam1_clk>;
++		target = <&i2c0mux>;
+ 		__overlay__ {
+ 			status = "okay";
+-			clock-frequency = <24000000>;
+ 		};
+ 	};
+ 
+-	fragment@4 {
+-		target = <&i2c0mux>;
++	clk_frag: fragment@4 {
++		target = <&cam1_clk>;
+ 		__overlay__ {
+ 			status = "okay";
+-		};
+-	};
+-
+-	fragment@6 {
+-		target = <&csi1>;
+-		__dormant__ {
+-			brcm,media-controller;
++			clock-frequency = <24000000>;
+ 		};
+ 	};
+ 
+ 	__overrides__ {
+ 		rotation = <&ov7251>,"rotation:0";
+ 		orientation = <&ov7251>,"orientation:0";
+-		media-controller = <0>,"=6";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&ov7251>, "clocks:0=",<&cam0_clk>,
++		       <&ov7251>, "vdda-supply:0=",<&cam0_reg>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/ov9281-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
+@@ -8,7 +8,7 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	i2c_frag: fragment@0 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -44,10 +44,11 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@1 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
++			brcm,media-controller;
+ 
+ 			port {
+ 				csi1_ep: endpoint {
+@@ -67,30 +68,28 @@
+ 	};
+ 
+ 	fragment@3 {
+-		target = <&cam1_clk>;
+-		__overlay__ {
+-			status = "okay";
+-			clock-frequency = <24000000>;
+-		};
+-	};
+-
+-	fragment@4 {
+ 		target = <&i2c0mux>;
+ 		__overlay__ {
+ 			status = "okay";
+ 		};
+ 	};
+ 
+-	fragment@5 {
+-		target = <&csi1>;
++	clk_frag: fragment@4 {
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			brcm,media-controller;
++			status = "okay";
++			clock-frequency = <24000000>;
+ 		};
+ 	};
+ 
+ 	__overrides__ {
+ 		rotation = <&ov9281>,"rotation:0";
+ 		orientation = <&ov9281>,"orientation:0";
+-		media-controller = <0>,"=5";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&ov9281>, "clocks:0=",<&cam0_clk>,
++		       <&ov9281>, "avdd-supply:0=",<&cam0_reg>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts
++++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
+@@ -6,23 +6,23 @@
+ /{
+ 	compatible = "brcm,bcm2835";
+ 
+-	fragment@0 {
++	i2c_frag: fragment@0 {
+ 		target = <&i2c_csi_dsi>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+ 			#size-cells = <0>;
+ 			status = "okay";
+ 
+-			tc358743@0f {
++			tc358743: tc358743@f {
+ 				compatible = "toshiba,tc358743";
+ 				reg = <0x0f>;
+ 				status = "okay";
+ 
+-				clocks = <&tc358743_clk>;
++				clocks = <&cam1_clk>;
+ 				clock-names = "refclk";
+ 
+ 				port {
+-					tc358743: endpoint {
++					tc358743_0: endpoint {
+ 						remote-endpoint = <&csi1_ep>;
+ 						clock-lanes = <0>;
+ 						clock-noncontinuous;
+@@ -34,28 +34,28 @@
+ 		};
+ 	};
+ 
+-	fragment@1 {
++	csi_frag: fragment@1 {
+ 		target = <&csi1>;
+-		__overlay__ {
++		csi: __overlay__ {
+ 			status = "okay";
+ 
+ 			port {
+ 				csi1_ep: endpoint {
+-					remote-endpoint = <&tc358743>;
++					remote-endpoint = <&tc358743_0>;
+ 				};
+ 			};
+ 		};
+ 	};
+ 
+ 	fragment@2 {
+-		target = <&tc358743>;
++		target = <&tc358743_0>;
+ 		__overlay__ {
+ 			data-lanes = <1 2>;
+ 		};
+ 	};
+ 
+ 	fragment@3 {
+-		target = <&tc358743>;
++		target = <&tc358743_0>;
+ 		__dormant__ {
+ 			data-lanes = <1 2 3 4>;
+ 		};
+@@ -75,14 +75,10 @@
+ 		};
+ 	};
+ 
+-	fragment@6 {
+-		target-path = "/";
++	clk_frag: fragment@6 {
++		target = <&cam1_clk>;
+ 		__overlay__ {
+-			tc358743_clk: bridge-clk {
+-				compatible = "fixed-clock";
+-				#clock-cells = <0>;
+-				clock-frequency = <27000000>;
+-			};
++			clock-frequency = <27000000>;
+ 		};
+ 	};
+ 
+@@ -100,16 +96,13 @@
+ 		};
+ 	};
+ 
+-	fragment@9 {
+-		target = <&csi1>;
+-		__dormant__ {
+-			brcm,media-controller;
+-		};
+-	};
+-
+ 	__overrides__ {
+ 		4lane = <0>, "-2+3-7+8";
+-		link-frequency = <&tc358743>,"link-frequencies#0";
+-		media-controller = <0>,"=9";
++		link-frequency = <&tc358743_0>,"link-frequencies#0";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&tc358743>, "clocks:0=",<&cam0_clk>;
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0615-ASoC-ma120x0p-Increase-maximum-sample-rate-to-192KHz.patch b/target/linux/bcm27xx/patches-5.15/950-0615-ASoC-ma120x0p-Increase-maximum-sample-rate-to-192KHz.patch
new file mode 100644
index 0000000000..9adba5e09f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0615-ASoC-ma120x0p-Increase-maximum-sample-rate-to-192KHz.patch
@@ -0,0 +1,24 @@
+From 4fe6752d2690c108aba6cd0576b86878b69b597c Mon Sep 17 00:00:00 2001
+From: Joerg Schambacher <joerg@hifiberry.com>
+Date: Wed, 15 Dec 2021 19:27:00 +0100
+Subject: [PATCH] ASoC:ma120x0p: Increase maximum sample rate to 192KHz
+
+Change the maximum sample rate for the amplifier to
+192KHz as given in the Infineon specification.
+
+Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
+---
+ sound/soc/codecs/ma120x0p.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/sound/soc/codecs/ma120x0p.c
++++ b/sound/soc/codecs/ma120x0p.c
+@@ -1002,7 +1002,7 @@ static struct snd_soc_dai_driver ma120x0
+ 		.channels_max	= 2,
+ 		.rates = SNDRV_PCM_RATE_CONTINUOUS,
+ 		.rate_min = 44100,
+-		.rate_max = 96000,
++		.rate_max = 192000,
+ 		.formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE
+ 	},
+ 	.ops        = &ma120x0p_dai_ops,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0616-staging-bcm2835-isp-Fix-cleanup-after-init-fail.patch b/target/linux/bcm27xx/patches-5.15/950-0616-staging-bcm2835-isp-Fix-cleanup-after-init-fail.patch
new file mode 100644
index 0000000000..a2630f3d58
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0616-staging-bcm2835-isp-Fix-cleanup-after-init-fail.patch
@@ -0,0 +1,38 @@
+From f5b1e0398dc2f3b80c62c06ad7bb39224cd07bf8 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 16 Dec 2021 16:25:00 +0000
+Subject: [PATCH] staging/bcm2835-isp: Fix cleanup after init fail
+
+bcm2835_isp_remove is called on an initialisation failure, but at that
+point the drvdata hasn't been set. This causes a crash when e.g. using
+the cutdown firmware (gpu_mem=16).
+
+Move platform_set_drvdata before the instance probing loop to avoid the
+problem.
+
+See: https://github.com/raspberrypi/linux/issues/4774
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -1774,6 +1774,8 @@ static int bcm2835_isp_probe(struct plat
+ 	if (!bcm2835_isp_instances)
+ 		return -ENOMEM;
+ 
++	platform_set_drvdata(pdev, bcm2835_isp_instances);
++
+ 	for (i = 0; i < BCM2835_ISP_NUM_INSTANCES; i++) {
+ 		ret = bcm2835_isp_probe_instance(pdev,
+ 						 &bcm2835_isp_instances[i], i);
+@@ -1781,7 +1783,6 @@ static int bcm2835_isp_probe(struct plat
+ 			goto error;
+ 	}
+ 
+-	platform_set_drvdata(pdev, bcm2835_isp_instances);
+ 	dev_info(&pdev->dev, "Loaded V4L2 %s\n", BCM2835_ISP_NAME);
+ 	return 0;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0617-drm-vc4-kms-Take-old-state-core-clock-rate-into-acco.patch b/target/linux/bcm27xx/patches-5.15/950-0617-drm-vc4-kms-Take-old-state-core-clock-rate-into-acco.patch
new file mode 100644
index 0000000000..8eb8067732
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0617-drm-vc4-kms-Take-old-state-core-clock-rate-into-acco.patch
@@ -0,0 +1,38 @@
+From ae03b35cf2792e7c4cf55c44dc37322487b72d1d Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 18 Nov 2021 14:04:00 +0100
+Subject: [PATCH] drm/vc4: kms: Take old state core clock rate into
+ account
+
+During a commit, the core clock, which feeds the HVS, needs to run at
+a minimum of 500MHz.
+
+While doing that commit, we can also change the mode to one that
+requires a higher core clock, so we take the core clock rate associated
+to that new state into account for that boost.
+
+However, the old state also needs to be taken into account if it
+requires a core clock higher that the new one and our 500MHz limit,
+since it's still live in hardware at the beginning of our commit.
+
+Fixes: 16e101051f32 ("drm/vc4: Increase the core clock based on HVS load")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -390,9 +390,10 @@ static void vc4_atomic_commit_tail(struc
+ 	}
+ 
+ 	if (vc4->hvs && vc4->hvs->hvs5) {
++		unsigned long state_rate = max(old_hvs_state->core_clock_rate,
++					       new_hvs_state->core_clock_rate);
+ 		unsigned long core_rate = max_t(unsigned long,
+-						500000000,
+-						new_hvs_state->core_clock_rate);
++						500000000, state_rate);
+ 
+ 		core_req = clk_request_start(hvs->core_clk, core_rate);
+ 		/*
diff --git a/target/linux/bcm27xx/patches-5.15/950-0618-drm-vc4-hvs-Store-channel-in-variable.patch b/target/linux/bcm27xx/patches-5.15/950-0618-drm-vc4-hvs-Store-channel-in-variable.patch
new file mode 100644
index 0000000000..5a668dc870
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0618-drm-vc4-hvs-Store-channel-in-variable.patch
@@ -0,0 +1,53 @@
+From ac0e3e24176b77fa19a7a2e041879f6c5e652122 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 29 Nov 2021 12:18:39 +0100
+Subject: [PATCH] drm/vc4: hvs: Store channel in variable
+
+The assigned_channel field of our vc4_crtc_state structure is accessed
+multiple times in vc4_hvs_atomic_flush, so let's move it to a variable
+that can be used in all those places.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -674,6 +674,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
++	unsigned int channel = vc4_state->assigned_channel;
+ 	struct drm_plane *plane;
+ 	struct vc4_plane_state *vc4_plane_state;
+ 	bool debug_dump_regs = false;
+@@ -714,8 +715,8 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 		/* This sets a black background color fill, as is the case
+ 		 * with other DRM drivers.
+ 		 */
+-		HVS_WRITE(SCALER_DISPBKGNDX(vc4_state->assigned_channel),
+-			  HVS_READ(SCALER_DISPBKGNDX(vc4_state->assigned_channel)) |
++		HVS_WRITE(SCALER_DISPBKGNDX(channel),
++			  HVS_READ(SCALER_DISPBKGNDX(channel)) |
+ 			  SCALER_DISPBKGND_FILL);
+ 
+ 	/* Only update DISPLIST if the CRTC was already running and is not
+@@ -729,7 +730,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 		vc4_hvs_update_dlist(crtc);
+ 
+ 	if (crtc->state->color_mgmt_changed) {
+-		u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(vc4_state->assigned_channel));
++		u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(channel));
+ 
+ 		if (crtc->state->gamma_lut) {
+ 			if (!vc4->hvs->hvs5) {
+@@ -752,7 +753,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 			if (!vc4->hvs->hvs5)
+ 				dispbkgndx &= ~SCALER_DISPBKGND_GAMMA;
+ 		}
+-		HVS_WRITE(SCALER_DISPBKGNDX(vc4_state->assigned_channel), dispbkgndx);
++		HVS_WRITE(SCALER_DISPBKGNDX(channel), dispbkgndx);
+ 	}
+ 
+ 	if (debug_dump_regs) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch b/target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch
new file mode 100644
index 0000000000..4d7c772f7e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch
@@ -0,0 +1,35 @@
+From 5fa4e656501eed725b9151a38e5b55a45571bf31 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 6 Dec 2021 16:17:56 +0100
+Subject: [PATCH] drm/vc4: hvs: Remove dlist setup duplication
+
+Setting the DISPLISTx register needs to occur in every case, and we
+don't need to protect the register using the event_lock, so we can just
+move it after the if branches and simplify a bit the function.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 9 +++------
+ 1 file changed, 3 insertions(+), 6 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -616,15 +616,12 @@ static void vc4_hvs_update_dlist(struct
+ 			crtc->state->event = NULL;
+ 		}
+ 
+-		HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
+-			  vc4_state->mm.start);
+-
+ 		spin_unlock_irqrestore(&dev->event_lock, flags);
+-	} else {
+-		HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
+-			  vc4_state->mm.start);
+ 	}
+ 
++	HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
++		  vc4_state->mm.start);
++
+ 	spin_lock_irqsave(&vc4_crtc->irq_lock, flags);
+ 	vc4_crtc->current_dlist = vc4_state->mm.start;
+ 	spin_unlock_irqrestore(&vc4_crtc->irq_lock, flags);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0620-drm-vc4-hvs-Move-the-dlist-setup-to-its-own-function.patch b/target/linux/bcm27xx/patches-5.15/950-0620-drm-vc4-hvs-Move-the-dlist-setup-to-its-own-function.patch
new file mode 100644
index 0000000000..c33df230d9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0620-drm-vc4-hvs-Move-the-dlist-setup-to-its-own-function.patch
@@ -0,0 +1,71 @@
+From 849b51e0dea1746f17b8b0b59c5e6cc831e23697 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 6 Dec 2021 16:31:33 +0100
+Subject: [PATCH] drm/vc4: hvs: Move the dlist setup to its own
+ function
+
+The vc4_hvs_update_dlist function mostly deals with setting up the
+vblank events and setting up the dlist entry pointer to our current
+active one.
+
+We'll want to do the former separately from the vblank handling in later
+patches, so let's move it to a function of its own.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 19 ++++++++++++++-----
+ 1 file changed, 14 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -596,10 +596,19 @@ int vc4_hvs_atomic_check(struct drm_crtc
+ 	return vc4_hvs_gamma_check(crtc, state);
+ }
+ 
+-static void vc4_hvs_update_dlist(struct drm_crtc *crtc)
++static void vc4_hvs_install_dlist(struct drm_crtc *crtc)
+ {
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
++
++	HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
++		  vc4_state->mm.start);
++}
++
++static void vc4_hvs_update_dlist(struct drm_crtc *crtc)
++{
++	struct drm_device *dev = crtc->dev;
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
+ 	unsigned long flags;
+@@ -619,9 +628,6 @@ static void vc4_hvs_update_dlist(struct
+ 		spin_unlock_irqrestore(&dev->event_lock, flags);
+ 	}
+ 
+-	HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
+-		  vc4_state->mm.start);
+-
+ 	spin_lock_irqsave(&vc4_crtc->irq_lock, flags);
+ 	vc4_crtc->current_dlist = vc4_state->mm.start;
+ 	spin_unlock_irqrestore(&vc4_crtc->irq_lock, flags);
+@@ -648,6 +654,7 @@ void vc4_hvs_atomic_enable(struct drm_cr
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	bool oneshot = vc4_crtc->feeds_txp;
+ 
++	vc4_hvs_install_dlist(crtc);
+ 	vc4_hvs_update_dlist(crtc);
+ 	vc4_hvs_init_channel(vc4, crtc, mode, oneshot);
+ }
+@@ -723,8 +730,10 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	 * If the CRTC is being disabled, there's no point in updating this
+ 	 * information.
+ 	 */
+-	if (crtc->state->active && old_state->active)
++	if (crtc->state->active && old_state->active) {
++		vc4_hvs_install_dlist(crtc);
+ 		vc4_hvs_update_dlist(crtc);
++	}
+ 
+ 	if (crtc->state->color_mgmt_changed) {
+ 		u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(channel));
diff --git a/target/linux/bcm27xx/patches-5.15/950-0621-drm-vc4-hvs-Ignore-atomic_flush-if-we-re-disabled.patch b/target/linux/bcm27xx/patches-5.15/950-0621-drm-vc4-hvs-Ignore-atomic_flush-if-we-re-disabled.patch
new file mode 100644
index 0000000000..51eaf48b1a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0621-drm-vc4-hvs-Ignore-atomic_flush-if-we-re-disabled.patch
@@ -0,0 +1,27 @@
+From ba067c30a6456a28c42f74d2134ce9a54a10337f Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 6 Dec 2021 16:32:10 +0100
+Subject: [PATCH] drm/vc4: hvs: Ignore atomic_flush if we're disabled
+
+atomic_flush will be called for each CRTC even if they aren't enabled.
+
+The whole code we have there will thus run without a properly affected
+channel, which can then result in all sorts of weird behaviour.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -686,6 +686,9 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	u32 __iomem *dlist_start = vc4->hvs->dlist + vc4_state->mm.start;
+ 	u32 __iomem *dlist_next = dlist_start;
+ 
++	if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
++		return;
++
+ 	if (debug_dump_regs) {
+ 		DRM_INFO("CRTC %d HVS before:\n", drm_crtc_index(crtc));
+ 		vc4_hvs_dump_state(dev);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0622-drm-vc4-Skip-writes-to-disabled-packet-RAM.patch b/target/linux/bcm27xx/patches-5.15/950-0622-drm-vc4-Skip-writes-to-disabled-packet-RAM.patch
new file mode 100644
index 0000000000..565fad9bd6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0622-drm-vc4-Skip-writes-to-disabled-packet-RAM.patch
@@ -0,0 +1,58 @@
+From f0206374000464f8284826d3bdc50b2fc7c5ea71 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Fri, 10 Dec 2021 18:03:18 +0000
+Subject: [PATCH] drm/vc4: Skip writes to disabled packet RAM
+
+This path actually occurs when audio is started during a hdmi mode set.
+As the data will be written by vc4_hdmi_set_infoframes when packet RAM
+is enabled again, don't treat as an error
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 5 ++++-
+ drivers/gpu/drm/vc4/vc4_hdmi.h | 6 ++++++
+ 2 files changed, 10 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -684,6 +684,7 @@ static void vc4_hdmi_encoder_post_crtc_d
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 
++	vc4_hdmi->output_enabled = false;
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+ 	HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0);
+@@ -1200,6 +1201,7 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 			   VC4_HDMI_RAM_PACKET_ENABLE);
+ 
+ 		spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
++		vc4_hdmi->output_enabled = true;
+ 
+ 		vc4_hdmi_set_infoframes(encoder);
+ 	}
+@@ -1605,7 +1607,8 @@ static int vc4_hdmi_audio_prepare(struct
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ 
+ 	memcpy(&vc4_hdmi->audio.infoframe, &params->cea, sizeof(params->cea));
+-	vc4_hdmi_set_audio_infoframe(encoder);
++	if (vc4_hdmi->output_enabled)
++		vc4_hdmi_set_audio_infoframe(encoder);
+ 
+ 	mutex_unlock(&vc4_hdmi->mutex);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -209,6 +209,12 @@ struct vc4_hdmi {
+ 	struct drm_display_mode saved_adjusted_mode;
+ 
+ 	/**
++	 * @output_enabled: Is the HDMI controller currently active?
++	 * Protected by @mutex.
++	 */
++	bool output_enabled;
++
++	/**
+ 	 * @scdc_enabled: Is the HDMI controller currently running with
+ 	 * the scrambler on? Protected by @mutex.
+ 	 */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0623-drm-edid-Rename-drm_hdmi_avi_infoframe_colorspace-to.patch b/target/linux/bcm27xx/patches-5.15/950-0623-drm-edid-Rename-drm_hdmi_avi_infoframe_colorspace-to.patch
new file mode 100644
index 0000000000..8dce12c8db
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0623-drm-edid-Rename-drm_hdmi_avi_infoframe_colorspace-to.patch
@@ -0,0 +1,100 @@
+From d27c36f9beed7d6a9d19ea1d642a7fb898eb6d95 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 14 Apr 2021 16:21:08 +0200
+Subject: [PATCH] drm/edid: Rename drm_hdmi_avi_infoframe_colorspace to
+ _colorimetry
+
+The drm_hdmi_avi_infoframe_colorspace() function actually sets the
+colorimetry and extended_colorimetry fields in the hdmi_avi_infoframe
+structure with DRM_MODE_COLORIMETRY_* values.
+
+To make things worse, the hdmi_avi_infoframe structure also has a
+colorspace field used to signal whether an RGB or YUV output is being
+used.
+
+Let's remove the inconsistency and allow for the colorspace usage by
+renaming the function.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/drm_edid.c                  | 8 ++++----
+ drivers/gpu/drm/i915/display/intel_hdmi.c   | 2 +-
+ drivers/gpu/drm/i915/display/intel_lspcon.c | 2 +-
+ drivers/gpu/drm/vc4/vc4_hdmi.c              | 2 +-
+ include/drm/drm_edid.h                      | 4 ++--
+ 5 files changed, 9 insertions(+), 9 deletions(-)
+
+--- a/drivers/gpu/drm/drm_edid.c
++++ b/drivers/gpu/drm/drm_edid.c
+@@ -5742,13 +5742,13 @@ static const u32 hdmi_colorimetry_val[]
+ #undef ACE
+ 
+ /**
+- * drm_hdmi_avi_infoframe_colorspace() - fill the HDMI AVI infoframe
+- *                                       colorspace information
++ * drm_hdmi_avi_infoframe_colorimetry() - fill the HDMI AVI infoframe
++ *                                       colorimetry information
+  * @frame: HDMI AVI infoframe
+  * @conn_state: connector state
+  */
+ void
+-drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
++drm_hdmi_avi_infoframe_colorimetry(struct hdmi_avi_infoframe *frame,
+ 				  const struct drm_connector_state *conn_state)
+ {
+ 	u32 colorimetry_val;
+@@ -5767,7 +5767,7 @@ drm_hdmi_avi_infoframe_colorspace(struct
+ 	frame->extended_colorimetry = (colorimetry_val >> 2) &
+ 					EXTENDED_COLORIMETRY_MASK;
+ }
+-EXPORT_SYMBOL(drm_hdmi_avi_infoframe_colorspace);
++EXPORT_SYMBOL(drm_hdmi_avi_infoframe_colorimetry);
+ 
+ /**
+  * drm_hdmi_avi_infoframe_quant_range() - fill the HDMI AVI infoframe
+--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
++++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
+@@ -730,7 +730,7 @@ intel_hdmi_compute_avi_infoframe(struct
+ 	else
+ 		frame->colorspace = HDMI_COLORSPACE_RGB;
+ 
+-	drm_hdmi_avi_infoframe_colorspace(frame, conn_state);
++	drm_hdmi_avi_infoframe_colorimetry(frame, conn_state);
+ 
+ 	/* nonsense combination */
+ 	drm_WARN_ON(encoder->base.dev, crtc_state->limited_color_range &&
+--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
++++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
+@@ -537,7 +537,7 @@ void lspcon_set_infoframes(struct intel_
+ 		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
+ 
+ 	/* Set the Colorspace as per the HDMI spec */
+-	drm_hdmi_avi_infoframe_colorspace(&frame.avi, conn_state);
++	drm_hdmi_avi_infoframe_colorimetry(&frame.avi, conn_state);
+ 
+ 	/* nonsense combination */
+ 	drm_WARN_ON(encoder->base.dev, crtc_state->limited_color_range &&
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -516,7 +516,7 @@ static void vc4_hdmi_set_avi_infoframe(s
+ 					   vc4_encoder->limited_rgb_range ?
+ 					   HDMI_QUANTIZATION_RANGE_LIMITED :
+ 					   HDMI_QUANTIZATION_RANGE_FULL);
+-	drm_hdmi_avi_infoframe_colorspace(&frame.avi, cstate);
++	drm_hdmi_avi_infoframe_colorimetry(&frame.avi, cstate);
+ 	drm_hdmi_avi_infoframe_bars(&frame.avi, cstate);
+ 
+ 	vc4_hdmi_write_infoframe(encoder, &frame);
+--- a/include/drm/drm_edid.h
++++ b/include/drm/drm_edid.h
+@@ -401,8 +401,8 @@ drm_hdmi_vendor_infoframe_from_display_m
+ 					    const struct drm_display_mode *mode);
+ 
+ void
+-drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
+-				  const struct drm_connector_state *conn_state);
++drm_hdmi_avi_infoframe_colorimetry(struct hdmi_avi_infoframe *frame,
++				   const struct drm_connector_state *conn_state);
+ 
+ void
+ drm_hdmi_avi_infoframe_bars(struct hdmi_avi_infoframe *frame,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0624-drm-vc4-hdmi-Add-full-range-RGB-helper.patch b/target/linux/bcm27xx/patches-5.15/950-0624-drm-vc4-hdmi-Add-full-range-RGB-helper.patch
new file mode 100644
index 0000000000..5f606d39b2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0624-drm-vc4-hdmi-Add-full-range-RGB-helper.patch
@@ -0,0 +1,43 @@
+From 4809cf80fdd964c413045e550fb137a18dc98ba2 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Tue, 12 Jan 2021 15:55:07 +0100
+Subject: [PATCH] drm/vc4: hdmi: Add full range RGB helper
+
+We're going to need to tell whether we want to run with a full or
+limited range RGB output in multiple places in the code, so let's create
+a helper that will return whether we need with full range or not.
+
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++++++++--
+ 1 file changed, 10 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -107,6 +107,15 @@ static bool vc4_hdmi_mode_needs_scrambli
+ 	return (mode->clock * 1000) > HDMI_14_MAX_TMDS_CLK;
+ }
+ 
++static bool vc4_hdmi_is_full_range_rgb(struct vc4_hdmi *vc4_hdmi,
++				       const struct drm_display_mode *mode)
++{
++	struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder;
++
++	return !vc4_encoder->hdmi_monitor ||
++		drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL;
++}
++
+ static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused)
+ {
+ 	struct drm_info_node *node = (struct drm_info_node *)m->private;
+@@ -1115,8 +1124,7 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 
+-	if (vc4_encoder->hdmi_monitor &&
+-	    drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED) {
++	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
+ 		if (vc4_hdmi->variant->csc_setup)
+ 			vc4_hdmi->variant->csc_setup(vc4_hdmi, true);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0625-drm-vc4-hdmi-Use-full-range-helper-in-csc-functions.patch b/target/linux/bcm27xx/patches-5.15/950-0625-drm-vc4-hdmi-Use-full-range-helper-in-csc-functions.patch
new file mode 100644
index 0000000000..f6d45b1c33
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0625-drm-vc4-hdmi-Use-full-range-helper-in-csc-functions.patch
@@ -0,0 +1,126 @@
+From 183b128892a416e4c09b6379f964cb9620f2a7ea Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Tue, 12 Jan 2021 15:57:50 +0100
+Subject: [PATCH] drm/vc4: hdmi: Use full range helper in csc functions
+
+The CSC callbacks takes a boolean as an argument to tell whether we're
+using the full range or limited range RGB.
+
+However, with the upcoming YUV support, the logic will be a bit more
+complex. In order to address this, let's make the callbacks take the
+entire mode, and call our new helper to tell whether the full or limited
+range RGB should be used.
+
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 31 +++++++++++--------------------
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  4 ++--
+ 2 files changed, 13 insertions(+), 22 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -504,7 +504,6 @@ static void vc4_hdmi_write_infoframe(str
+ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+-	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	struct drm_connector *connector = &vc4_hdmi->connector;
+ 	struct drm_connector_state *cstate = connector->state;
+ 	const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+@@ -522,9 +521,9 @@ static void vc4_hdmi_set_avi_infoframe(s
+ 
+ 	drm_hdmi_avi_infoframe_quant_range(&frame.avi,
+ 					   connector, mode,
+-					   vc4_encoder->limited_rgb_range ?
+-					   HDMI_QUANTIZATION_RANGE_LIMITED :
+-					   HDMI_QUANTIZATION_RANGE_FULL);
++					   vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode) ?
++					   HDMI_QUANTIZATION_RANGE_FULL :
++					   HDMI_QUANTIZATION_RANGE_LIMITED);
+ 	drm_hdmi_avi_infoframe_colorimetry(&frame.avi, cstate);
+ 	drm_hdmi_avi_infoframe_bars(&frame.avi, cstate);
+ 
+@@ -741,7 +740,8 @@ static void vc4_hdmi_encoder_post_crtc_p
+ 	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
+-static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, bool enable)
++static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
++			       const struct drm_display_mode *mode)
+ {
+ 	unsigned long flags;
+ 	u32 csc_ctl;
+@@ -751,7 +751,7 @@ static void vc4_hdmi_csc_setup(struct vc
+ 	csc_ctl = VC4_SET_FIELD(VC4_HD_CSC_CTL_ORDER_BGR,
+ 				VC4_HD_CSC_CTL_ORDER);
+ 
+-	if (enable) {
++	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
+ 		/* CEA VICs other than #1 requre limited range RGB
+ 		 * output unless overridden by an AVI infoframe.
+ 		 * Apply a colorspace conversion to squash 0-255 down
+@@ -781,7 +781,8 @@ static void vc4_hdmi_csc_setup(struct vc
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+-static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, bool enable)
++static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
++			       const struct drm_display_mode *mode)
+ {
+ 	unsigned long flags;
+ 	u32 csc_ctl;
+@@ -790,7 +791,7 @@ static void vc5_hdmi_csc_setup(struct vc
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+-	if (enable) {
++	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
+ 		/* CEA VICs other than #1 requre limited range RGB
+ 		 * output unless overridden by an AVI infoframe.
+ 		 * Apply a colorspace conversion to squash 0-255 down
+@@ -1119,22 +1120,12 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+-	struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder);
+ 	unsigned long flags;
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 
+-	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
+-		if (vc4_hdmi->variant->csc_setup)
+-			vc4_hdmi->variant->csc_setup(vc4_hdmi, true);
+-
+-		vc4_encoder->limited_rgb_range = true;
+-	} else {
+-		if (vc4_hdmi->variant->csc_setup)
+-			vc4_hdmi->variant->csc_setup(vc4_hdmi, false);
+-
+-		vc4_encoder->limited_rgb_range = false;
+-	}
++	if (vc4_hdmi->variant->csc_setup)
++		vc4_hdmi->variant->csc_setup(vc4_hdmi, mode);
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_FIFO_CTL, VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N);
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -12,7 +12,6 @@
+ struct vc4_hdmi_encoder {
+ 	struct vc4_encoder base;
+ 	bool hdmi_monitor;
+-	bool limited_rgb_range;
+ };
+ 
+ static inline struct vc4_hdmi_encoder *
+@@ -77,7 +76,8 @@ struct vc4_hdmi_variant {
+ 	void (*reset)(struct vc4_hdmi *vc4_hdmi);
+ 
+ 	/* Callback to enable / disable the CSC */
+-	void (*csc_setup)(struct vc4_hdmi *vc4_hdmi, bool enable);
++	void (*csc_setup)(struct vc4_hdmi *vc4_hdmi,
++			  const struct drm_display_mode *mode);
+ 
+ 	/* Callback to configure the video timings in the HDMI block */
+ 	void (*set_timings)(struct vc4_hdmi *vc4_hdmi,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0626-drm-vc4-hdmi-Move-XBAR-setup-to-csc_setup.patch b/target/linux/bcm27xx/patches-5.15/950-0626-drm-vc4-hdmi-Move-XBAR-setup-to-csc_setup.patch
new file mode 100644
index 0000000000..6db6ff62bb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0626-drm-vc4-hdmi-Move-XBAR-setup-to-csc_setup.patch
@@ -0,0 +1,34 @@
+From 9d59b54f5b608a823f01982a1aabac76a364556d Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 13 Jan 2021 11:07:48 +0100
+Subject: [PATCH] drm/vc4: hdmi: Move XBAR setup to csc_setup
+
+On the BCM2711, the HDMI_VEC_INTERFACE_XBAR register configuration
+depends on whether we're using an RGB or YUV output. Let's move that
+configuration to the CSC setup.
+
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -791,6 +791,8 @@ static void vc5_hdmi_csc_setup(struct vc
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
++	HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021);
++
+ 	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
+ 		/* CEA VICs other than #1 requre limited range RGB
+ 		 * output unless overridden by an AVI infoframe.
+@@ -905,7 +907,6 @@ static void vc5_hdmi_set_timings(struct
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+-	HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021);
+ 	HDMI_WRITE(HDMI_HORZA,
+ 		   (vsync_pos ? VC5_HDMI_HORZA_VPOS : 0) |
+ 		   (hsync_pos ? VC5_HDMI_HORZA_HPOS : 0) |
diff --git a/target/linux/bcm27xx/patches-5.15/950-0627-drm-vc4-hdmi-Replace-CSC_CTL-hardcoded-value-by-defi.patch b/target/linux/bcm27xx/patches-5.15/950-0627-drm-vc4-hdmi-Replace-CSC_CTL-hardcoded-value-by-defi.patch
new file mode 100644
index 0000000000..8a9630c569
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0627-drm-vc4-hdmi-Replace-CSC_CTL-hardcoded-value-by-defi.patch
@@ -0,0 +1,42 @@
+From 77b0e8ded57e7fb5d742fb533d7a9bb3f3788513 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 13 Jan 2021 11:20:08 +0100
+Subject: [PATCH] drm/vc4: hdmi: Replace CSC_CTL hardcoded value by
+ defines
+
+On BCM2711, the HDMI_CSC_CTL register value has been hardcoded to an
+opaque value. Let's replace it with properly defined values.
+
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 5 ++---
+ drivers/gpu/drm/vc4/vc4_regs.h | 3 +++
+ 2 files changed, 5 insertions(+), 3 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -785,9 +785,8 @@ static void vc5_hdmi_csc_setup(struct vc
+ 			       const struct drm_display_mode *mode)
+ {
+ 	unsigned long flags;
+-	u32 csc_ctl;
+-
+-	csc_ctl = 0x07;	/* RGB_CONVERT_MODE = custom matrix, || USE_RGB_TO_YCBCR */
++	u32 csc_ctl = VC5_MT_CP_CSC_CTL_ENABLE | VC4_SET_FIELD(VC4_HD_CSC_CTL_MODE_CUSTOM,
++							       VC5_MT_CP_CSC_CTL_MODE);
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_regs.h
+@@ -796,6 +796,9 @@ enum {
+ # define VC4_HD_CSC_CTL_RGB2YCC			BIT(1)
+ # define VC4_HD_CSC_CTL_ENABLE			BIT(0)
+ 
++# define VC5_MT_CP_CSC_CTL_ENABLE		BIT(2)
++# define VC5_MT_CP_CSC_CTL_MODE_MASK		VC4_MASK(1, 0)
++
+ # define VC4_DVP_HT_CLOCK_STOP_PIXEL		BIT(1)
+ 
+ /* HVS display list information. */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0628-drm-vc4-hdmi-Define-colorspace-matrices.patch b/target/linux/bcm27xx/patches-5.15/950-0628-drm-vc4-hdmi-Define-colorspace-matrices.patch
new file mode 100644
index 0000000000..ae2faca5f1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0628-drm-vc4-hdmi-Define-colorspace-matrices.patch
@@ -0,0 +1,115 @@
+From cbb71ade28d28e5fcb04171b6be283b150796e7a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 13 Jan 2021 11:30:21 +0100
+Subject: [PATCH] drm/vc4: hdmi: Define colorspace matrices
+
+The current CSC setup code for the BCM2711 uses a sequence of register
+writes to configure the CSC depending on whether we output using a full
+or limited range.
+
+However, with the upcoming introduction of the YUV output, we're going
+to add new matrices to perform the conversions, so we should switch to
+something a bit more flexible that takes the matrix as an argument and
+programs the CSC accordingly.
+
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 79 +++++++++++++++++++++-------------
+ 1 file changed, 50 insertions(+), 29 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -781,6 +781,52 @@ static void vc4_hdmi_csc_setup(struct vc
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
++
++/*
++ * If we need to output Full Range RGB, then use the unity matrix
++ *
++ * [ 1      0      0      0]
++ * [ 0      1      0      0]
++ * [ 0      0      1      0]
++ *
++ * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
++ */
++static const u16 vc5_hdmi_csc_full_rgb_unity[3][4] = {
++	{ 0x2000, 0x0000, 0x0000, 0x0000 },
++	{ 0x0000, 0x2000, 0x0000, 0x0000 },
++	{ 0x0000, 0x0000, 0x2000, 0x0000 },
++};
++
++/*
++ * CEA VICs other than #1 require limited range RGB output unless
++ * overridden by an AVI infoframe. Apply a colorspace conversion to
++ * squash 0-255 down to 16-235. The matrix here is:
++ *
++ * [ 0.8594 0      0      16]
++ * [ 0      0.8594 0      16]
++ * [ 0      0      0.8594 16]
++ *
++ * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
++ */
++static const u16 vc5_hdmi_csc_full_rgb_to_limited_rgb[3][4] = {
++	{ 0x1b80, 0x0000, 0x0000, 0x0400 },
++	{ 0x0000, 0x1b80, 0x0000, 0x0400 },
++	{ 0x0000, 0x0000, 0x1b80, 0x0400 },
++};
++
++static void vc5_hdmi_set_csc_coeffs(struct vc4_hdmi *vc4_hdmi,
++				    const u16 coeffs[3][4])
++{
++	lockdep_assert_held(&vc4_hdmi->hw_lock);
++
++	HDMI_WRITE(HDMI_CSC_12_11, (coeffs[0][1] << 16) | coeffs[0][0]);
++	HDMI_WRITE(HDMI_CSC_14_13, (coeffs[0][3] << 16) | coeffs[0][2]);
++	HDMI_WRITE(HDMI_CSC_22_21, (coeffs[1][1] << 16) | coeffs[1][0]);
++	HDMI_WRITE(HDMI_CSC_24_23, (coeffs[1][3] << 16) | coeffs[1][2]);
++	HDMI_WRITE(HDMI_CSC_32_31, (coeffs[2][1] << 16) | coeffs[2][0]);
++	HDMI_WRITE(HDMI_CSC_34_33, (coeffs[2][3] << 16) | coeffs[2][2]);
++}
++
+ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
+ 			       const struct drm_display_mode *mode)
+ {
+@@ -792,35 +838,10 @@ static void vc5_hdmi_csc_setup(struct vc
+ 
+ 	HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021);
+ 
+-	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
+-		/* CEA VICs other than #1 requre limited range RGB
+-		 * output unless overridden by an AVI infoframe.
+-		 * Apply a colorspace conversion to squash 0-255 down
+-		 * to 16-235.  The matrix here is:
+-		 *
+-		 * [ 0.8594 0      0      16]
+-		 * [ 0      0.8594 0      16]
+-		 * [ 0      0      0.8594 16]
+-		 * [ 0      0      0       1]
+-		 * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+-		 */
+-		HDMI_WRITE(HDMI_CSC_12_11, (0x0000 << 16) | 0x1b80);
+-		HDMI_WRITE(HDMI_CSC_14_13, (0x0400 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_22_21, (0x1b80 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_24_23, (0x0400 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_32_31, (0x0000 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_34_33, (0x0400 << 16) | 0x1b80);
+-	} else {
+-		/* Still use the matrix for full range, but make it unity.
+-		 * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+-		 */
+-		HDMI_WRITE(HDMI_CSC_12_11, (0x0000 << 16) | 0x2000);
+-		HDMI_WRITE(HDMI_CSC_14_13, (0x0000 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_22_21, (0x2000 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_24_23, (0x0000 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_32_31, (0x0000 << 16) | 0x0000);
+-		HDMI_WRITE(HDMI_CSC_34_33, (0x0000 << 16) | 0x2000);
+-	}
++	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode))
++		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb);
++	else
++		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity);
+ 
+ 	HDMI_WRITE(HDMI_CSC_CTL, csc_ctl);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0629-drm-vc4-hdmi-Change-CSC-callback-prototype.patch b/target/linux/bcm27xx/patches-5.15/950-0629-drm-vc4-hdmi-Change-CSC-callback-prototype.patch
new file mode 100644
index 0000000000..6dd476ae5e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0629-drm-vc4-hdmi-Change-CSC-callback-prototype.patch
@@ -0,0 +1,63 @@
+From 8c8b3c5a94eb8b5f6a2b0c0c20a25643842646f7 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 18 Jan 2021 09:51:12 +0100
+Subject: [PATCH] drm/vc4: hdmi: Change CSC callback prototype
+
+In order to support the YUV output, we'll need the atomic state to know
+what is the state of the associated property in the CSC setup callback.
+
+Let's change the prototype of that callback to allow us to access it.
+
+Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 7 ++++++-
+ drivers/gpu/drm/vc4/vc4_hdmi.h | 1 +
+ 2 files changed, 7 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -741,6 +741,7 @@ static void vc4_hdmi_encoder_post_crtc_p
+ }
+ 
+ static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
++			       struct drm_connector_state *state,
+ 			       const struct drm_display_mode *mode)
+ {
+ 	unsigned long flags;
+@@ -828,6 +829,7 @@ static void vc5_hdmi_set_csc_coeffs(stru
+ }
+ 
+ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
++			       struct drm_connector_state *state,
+ 			       const struct drm_display_mode *mode)
+ {
+ 	unsigned long flags;
+@@ -1140,13 +1142,16 @@ static void vc4_hdmi_encoder_pre_crtc_en
+ 					     struct drm_atomic_state *state)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_connector *connector = &vc4_hdmi->connector;
+ 	struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
++	struct drm_connector_state *conn_state =
++		drm_atomic_get_new_connector_state(state, connector);
+ 	unsigned long flags;
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 
+ 	if (vc4_hdmi->variant->csc_setup)
+-		vc4_hdmi->variant->csc_setup(vc4_hdmi, mode);
++		vc4_hdmi->variant->csc_setup(vc4_hdmi, conn_state, mode);
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 	HDMI_WRITE(HDMI_FIFO_CTL, VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N);
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -77,6 +77,7 @@ struct vc4_hdmi_variant {
+ 
+ 	/* Callback to enable / disable the CSC */
+ 	void (*csc_setup)(struct vc4_hdmi *vc4_hdmi,
++			  struct drm_connector_state *state,
+ 			  const struct drm_display_mode *mode);
+ 
+ 	/* Callback to configure the video timings in the HDMI block */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0630-drm-vc4-hdmi-Move-clock-validation-to-its-own-functi.patch b/target/linux/bcm27xx/patches-5.15/950-0630-drm-vc4-hdmi-Move-clock-validation-to-its-own-functi.patch
new file mode 100644
index 0000000000..c3222e51a4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0630-drm-vc4-hdmi-Move-clock-validation-to-its-own-functi.patch
@@ -0,0 +1,63 @@
+From ca4627ecd3f93cd28ba3ae75af44e28224989b6a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 2 Dec 2021 16:58:17 +0100
+Subject: [PATCH] drm/vc4: hdmi: Move clock validation to its own
+ function
+
+Our code is doing the same clock rate validation in multiple instances.
+Let's create a helper to share the rate validation.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 26 +++++++++++++++-----------
+ 1 file changed, 15 insertions(+), 11 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1250,6 +1250,19 @@ static void vc4_hdmi_encoder_atomic_mode
+ 	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
++static enum drm_mode_status
++vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi,
++			     unsigned long long clock)
++{
++	if (clock > vc4_hdmi->variant->max_pixel_clock)
++		return MODE_CLOCK_HIGH;
++
++	if (vc4_hdmi->disable_4kp60 && clock > HDMI_14_MAX_TMDS_CLK)
++		return MODE_CLOCK_HIGH;
++
++	return MODE_OK;
++}
++
+ #define WIFI_2_4GHz_CH1_MIN_FREQ	2400000000ULL
+ #define WIFI_2_4GHz_CH1_MAX_FREQ	2422000000ULL
+ 
+@@ -1294,10 +1307,7 @@ static int vc4_hdmi_encoder_atomic_check
+ 	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+ 		pixel_rate = pixel_rate * 2;
+ 
+-	if (pixel_rate > vc4_hdmi->variant->max_pixel_clock)
+-		return -EINVAL;
+-
+-	if (vc4_hdmi->disable_4kp60 && (pixel_rate > HDMI_14_MAX_TMDS_CLK))
++	if (vc4_hdmi_encoder_clock_valid(vc4_hdmi, pixel_rate) != MODE_OK)
+ 		return -EINVAL;
+ 
+ 	vc4_state->pixel_rate = pixel_rate;
+@@ -1317,13 +1327,7 @@ vc4_hdmi_encoder_mode_valid(struct drm_e
+ 	     (mode->hsync_end % 2) || (mode->htotal % 2)))
+ 		return MODE_H_ILLEGAL;
+ 
+-	if ((mode->clock * 1000) > vc4_hdmi->variant->max_pixel_clock)
+-		return MODE_CLOCK_HIGH;
+-
+-	if (vc4_hdmi->disable_4kp60 && vc4_hdmi_mode_needs_scrambling(mode))
+-		return MODE_CLOCK_HIGH;
+-
+-	return MODE_OK;
++	return vc4_hdmi_encoder_clock_valid(vc4_hdmi, mode->clock * 1000);
+ }
+ 
+ static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0631-drm-vc4-hdmi-Move-clock-calculation-into-its-own-fun.patch b/target/linux/bcm27xx/patches-5.15/950-0631-drm-vc4-hdmi-Move-clock-calculation-into-its-own-fun.patch
new file mode 100644
index 0000000000..506b0cc5d8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0631-drm-vc4-hdmi-Move-clock-calculation-into-its-own-fun.patch
@@ -0,0 +1,87 @@
+From 60b7ddb0b3c9d906a20d8a84e527ccf5a792a64b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 2 Dec 2021 17:04:18 +0100
+Subject: [PATCH] drm/vc4: hdmi: Move clock calculation into its own
+ function
+
+The code to compute our clock rate for a given setup will be called in
+multiple places in the next patches, so let's create a separate function
+for it.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 49 +++++++++++++++++++++++-----------
+ 1 file changed, 34 insertions(+), 15 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1263,6 +1263,35 @@ vc4_hdmi_encoder_clock_valid(const struc
+ 	return MODE_OK;
+ }
+ 
++static unsigned long long
++vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
++				    unsigned int bpc)
++{
++	unsigned long long clock = mode->crtc_clock * 1000;
++
++	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
++		clock = clock * 2;
++
++	return clock * bpc / 8;
++}
++
++static int
++vc4_hdmi_encoder_compute_clock(const struct vc4_hdmi *vc4_hdmi,
++			       struct vc4_hdmi_connector_state *vc4_state,
++			       const struct drm_display_mode *mode,
++			       unsigned int bpc)
++{
++	unsigned long long clock;
++
++	clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc);
++	if (vc4_hdmi_encoder_clock_valid(vc4_hdmi, clock) != MODE_OK)
++		return -EINVAL;
++
++	vc4_state->pixel_rate = clock;
++
++	return 0;
++}
++
+ #define WIFI_2_4GHz_CH1_MIN_FREQ	2400000000ULL
+ #define WIFI_2_4GHz_CH1_MAX_FREQ	2422000000ULL
+ 
+@@ -1275,6 +1304,7 @@ static int vc4_hdmi_encoder_atomic_check
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	unsigned long long pixel_rate = mode->clock * 1000;
+ 	unsigned long long tmds_rate;
++	int ret;
+ 
+ 	if (vc4_hdmi->variant->unsupported_odd_h_timings &&
+ 	    !(mode->flags & DRM_MODE_FLAG_DBLCLK) &&
+@@ -1296,21 +1326,10 @@ static int vc4_hdmi_encoder_atomic_check
+ 		pixel_rate = mode->clock * 1000;
+ 	}
+ 
+-	if (conn_state->max_bpc == 12) {
+-		pixel_rate = pixel_rate * 150;
+-		do_div(pixel_rate, 100);
+-	} else if (conn_state->max_bpc == 10) {
+-		pixel_rate = pixel_rate * 125;
+-		do_div(pixel_rate, 100);
+-	}
+-
+-	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+-		pixel_rate = pixel_rate * 2;
+-
+-	if (vc4_hdmi_encoder_clock_valid(vc4_hdmi, pixel_rate) != MODE_OK)
+-		return -EINVAL;
+-
+-	vc4_state->pixel_rate = pixel_rate;
++	ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state, mode,
++					     conn_state->max_bpc);
++	if (ret)
++		return ret;
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0632-drm-vc4-hdmi-Take-the-sink-maximum-TMDS-clock-into-a.patch b/target/linux/bcm27xx/patches-5.15/950-0632-drm-vc4-hdmi-Take-the-sink-maximum-TMDS-clock-into-a.patch
new file mode 100644
index 0000000000..b9b1636b16
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0632-drm-vc4-hdmi-Take-the-sink-maximum-TMDS-clock-into-a.patch
@@ -0,0 +1,40 @@
+From e63d40712a11de18ea217c2211dfd3ae937bab7f Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 13 Dec 2021 15:33:11 +0100
+Subject: [PATCH] drm/vc4: hdmi: Take the sink maximum TMDS clock into
+ account
+
+In the function that validates that the clock isn't too high, we've only
+taken our controller limitations into account so far.
+
+However, the sink can have a limit on the maximum TMDS clock it can deal
+with too which is exposed through the EDID and the drm_display_info.
+
+Make sure we check it.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1254,12 +1254,18 @@ static enum drm_mode_status
+ vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi,
+ 			     unsigned long long clock)
+ {
++	const struct drm_connector *connector = &vc4_hdmi->connector;
++	const struct drm_display_info *info = &connector->display_info;
++
+ 	if (clock > vc4_hdmi->variant->max_pixel_clock)
+ 		return MODE_CLOCK_HIGH;
+ 
+ 	if (vc4_hdmi->disable_4kp60 && clock > HDMI_14_MAX_TMDS_CLK)
+ 		return MODE_CLOCK_HIGH;
+ 
++	if (info->max_tmds_clock && clock > (info->max_tmds_clock * 1000))
++		return MODE_CLOCK_HIGH;
++
+ 	return MODE_OK;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0633-drm-vc4-hdmi-Take-bpp-into-account-for-the-scrambler.patch b/target/linux/bcm27xx/patches-5.15/950-0633-drm-vc4-hdmi-Take-bpp-into-account-for-the-scrambler.patch
new file mode 100644
index 0000000000..d44e161cf0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0633-drm-vc4-hdmi-Take-bpp-into-account-for-the-scrambler.patch
@@ -0,0 +1,81 @@
+From 8b7091e1795e50b559b7896b71c45df4fc83353b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 10 Dec 2021 15:00:04 +0100
+Subject: [PATCH] drm/vc4: hdmi: Take bpp into account for the
+ scrambler
+
+The current code only base its decision for whether the scrambler must be
+enabled or not on the pixel clock of the mode, but doesn't take the bits
+per color into account.
+
+Let's leverage the new function to compute the clock rate in the
+scrambler setup code.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 17 +++++++++++++----
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  5 +++++
+ 2 files changed, 18 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -102,9 +102,17 @@
+ 
+ #define HDMI_14_MAX_TMDS_CLK   (340 * 1000 * 1000)
+ 
+-static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode)
++
++static unsigned long long
++vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
++				    unsigned int bpc);
++
++static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode,
++					   unsigned int bpc)
+ {
+-	return (mode->clock * 1000) > HDMI_14_MAX_TMDS_CLK;
++	unsigned long long clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc);
++
++	return clock > HDMI_14_MAX_TMDS_CLK;
+ }
+ 
+ static bool vc4_hdmi_is_full_range_rgb(struct vc4_hdmi *vc4_hdmi,
+@@ -276,7 +284,7 @@ static int vc4_hdmi_connector_get_modes(
+ 		struct drm_display_mode *mode;
+ 
+ 		list_for_each_entry(mode, &connector->probed_modes, head) {
+-			if (vc4_hdmi_mode_needs_scrambling(mode)) {
++			if (vc4_hdmi_mode_needs_scrambling(mode, 8)) {
+ 				drm_warn_once(drm, "The core clock cannot reach frequencies high enough to support 4k @ 60Hz.");
+ 				drm_warn_once(drm, "Please change your config.txt file to add hdmi_enable_4kp60.");
+ 			}
+@@ -627,7 +635,7 @@ static void vc4_hdmi_enable_scrambling(s
+ 	if (!vc4_hdmi_supports_scrambling(encoder, mode))
+ 		return;
+ 
+-	if (!vc4_hdmi_mode_needs_scrambling(mode))
++	if (!vc4_hdmi_mode_needs_scrambling(mode, vc4_hdmi->output_bpc))
+ 		return;
+ 
+ 	drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, true);
+@@ -1244,6 +1252,7 @@ static void vc4_hdmi_encoder_atomic_mode
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
++	vc4_hdmi->output_bpc = conn_state->max_bpc;
+ 	memcpy(&vc4_hdmi->saved_adjusted_mode,
+ 	       &crtc_state->adjusted_mode,
+ 	       sizeof(vc4_hdmi->saved_adjusted_mode));
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -221,6 +221,11 @@ struct vc4_hdmi {
+ 	 */
+ 	bool scdc_enabled;
+ 
++	/**
++	 * @output_bpc: BPC currently being used. Protected by @mutex.
++	 */
++	unsigned int output_bpc;
++
+ 	/* VC5 debugfs regset */
+ 	struct debugfs_regset32 cec_regset;
+ 	struct debugfs_regset32 csc_regset;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0634-drm-vc4-hdmi-Always-try-to-have-the-highest-bpc.patch b/target/linux/bcm27xx/patches-5.15/950-0634-drm-vc4-hdmi-Always-try-to-have-the-highest-bpc.patch
new file mode 100644
index 0000000000..e57923dd48
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0634-drm-vc4-hdmi-Always-try-to-have-the-highest-bpc.patch
@@ -0,0 +1,131 @@
+From 5194c69ca3e4af8c3a6ffc77e5eb1ee0a62a6bbe Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 10 Dec 2021 15:29:56 +0100
+Subject: [PATCH] drm/vc4: hdmi: Always try to have the highest bpc
+
+Currently we take the max_bpc property as the bpc value and do not try
+anything else.
+
+However, what the other drivers seem to be doing is that they would try
+with the highest bpc allowed by the max_bpc property and the hardware
+capabilities, test if it results in an acceptable configuration, and if
+not decrease the bpc and try again.
+
+Let's use the same logic.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 44 ++++++++++++++++++++++++++++++----
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  4 +++-
+ 2 files changed, 43 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -356,6 +356,7 @@ vc4_hdmi_connector_duplicate_state(struc
+ 		return NULL;
+ 
+ 	new_state->pixel_rate = vc4_state->pixel_rate;
++	new_state->output_bpc = vc4_state->output_bpc;
+ 	__drm_atomic_helper_connector_duplicate_state(connector, &new_state->base);
+ 
+ 	return &new_state->base;
+@@ -913,6 +914,8 @@ static void vc5_hdmi_set_timings(struct
+ 				 struct drm_connector_state *state,
+ 				 struct drm_display_mode *mode)
+ {
++	const struct vc4_hdmi_connector_state *vc4_state =
++		conn_state_to_vc4_hdmi_conn_state(state);
+ 	bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC;
+ 	bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC;
+ 	bool interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
+@@ -960,7 +963,7 @@ static void vc5_hdmi_set_timings(struct
+ 	HDMI_WRITE(HDMI_VERTB0, vertb_even);
+ 	HDMI_WRITE(HDMI_VERTB1, vertb);
+ 
+-	switch (state->max_bpc) {
++	switch (vc4_state->output_bpc) {
+ 	case 12:
+ 		gcp = 6;
+ 		gcp_en = true;
+@@ -1250,9 +1253,11 @@ static void vc4_hdmi_encoder_atomic_mode
+ 					     struct drm_connector_state *conn_state)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct vc4_hdmi_connector_state *vc4_state =
++		conn_state_to_vc4_hdmi_conn_state(conn_state);
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+-	vc4_hdmi->output_bpc = conn_state->max_bpc;
++	vc4_hdmi->output_bpc = vc4_state->output_bpc;
+ 	memcpy(&vc4_hdmi->saved_adjusted_mode,
+ 	       &crtc_state->adjusted_mode,
+ 	       sizeof(vc4_hdmi->saved_adjusted_mode));
+@@ -1307,6 +1312,38 @@ vc4_hdmi_encoder_compute_clock(const str
+ 	return 0;
+ }
+ 
++static int
++vc4_hdmi_encoder_compute_config(const struct vc4_hdmi *vc4_hdmi,
++				struct vc4_hdmi_connector_state *vc4_state,
++				const struct drm_display_mode *mode)
++{
++	struct drm_connector_state *conn_state = &vc4_state->base;
++	unsigned int max_bpc = clamp_t(unsigned int, conn_state->max_bpc, 8, 12);
++	unsigned int bpc;
++	int ret;
++
++	for (bpc = max_bpc; bpc >= 8; bpc -= 2) {
++		drm_dbg(dev, "Trying with a %d bpc output\n", bpc);
++
++		ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
++						     mode, bpc);
++		if (ret)
++			continue;
++
++		vc4_state->output_bpc = bpc;
++
++		drm_dbg(dev,
++			"Mode %ux%u @ %uHz: Found configuration: bpc: %u, clock: %llu\n",
++			mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
++			vc4_state->output_bpc,
++			vc4_state->pixel_rate);
++
++		break;
++	}
++
++	return ret;
++}
++
+ #define WIFI_2_4GHz_CH1_MIN_FREQ	2400000000ULL
+ #define WIFI_2_4GHz_CH1_MAX_FREQ	2422000000ULL
+ 
+@@ -1341,8 +1378,7 @@ static int vc4_hdmi_encoder_atomic_check
+ 		pixel_rate = mode->clock * 1000;
+ 	}
+ 
+-	ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state, mode,
+-					     conn_state->max_bpc);
++	ret = vc4_hdmi_encoder_compute_config(vc4_hdmi, vc4_state, mode);
+ 	if (ret)
+ 		return ret;
+ 
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -222,7 +222,8 @@ struct vc4_hdmi {
+ 	bool scdc_enabled;
+ 
+ 	/**
+-	 * @output_bpc: BPC currently being used. Protected by @mutex.
++	 * @output_bpc: Copy of @vc4_connector_state.output_bpc for use
++	 * outside of KMS hooks. Protected by @mutex.
+ 	 */
+ 	unsigned int output_bpc;
+ 
+@@ -252,6 +253,7 @@ encoder_to_vc4_hdmi(struct drm_encoder *
+ struct vc4_hdmi_connector_state {
+ 	struct drm_connector_state	base;
+ 	unsigned long long		pixel_rate;
++	unsigned int 			output_bpc;
+ };
+ 
+ static inline struct vc4_hdmi_connector_state *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0635-drm-vc4-hdmi-Support-HDMI-YUV-output.patch b/target/linux/bcm27xx/patches-5.15/950-0635-drm-vc4-hdmi-Support-HDMI-YUV-output.patch
new file mode 100644
index 0000000000..72c79c3eed
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0635-drm-vc4-hdmi-Support-HDMI-YUV-output.patch
@@ -0,0 +1,578 @@
+From ef94081204ede8c11a28b3c3713c54fee6bc6fea Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 4 Dec 2020 17:12:06 +0100
+Subject: [PATCH] drm/vc4: hdmi: Support HDMI YUV output
+
+In addition to the RGB444 output, the BCM2711 HDMI controller supports
+the YUV444 and YUV422 output formats.
+
+Let's add support for them in the driver, but still use RGB as the
+preferred format.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c      | 289 ++++++++++++++++++++++++++--
+ drivers/gpu/drm/vc4/vc4_hdmi.h      |  14 ++
+ drivers/gpu/drm/vc4/vc4_hdmi_regs.h |   6 +
+ drivers/gpu/drm/vc4/vc4_regs.h      |  16 ++
+ 4 files changed, 309 insertions(+), 16 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -102,15 +102,30 @@
+ 
+ #define HDMI_14_MAX_TMDS_CLK   (340 * 1000 * 1000)
+ 
++static const char * const output_format_str[] = {
++	[VC4_HDMI_OUTPUT_RGB]		= "RGB",
++	[VC4_HDMI_OUTPUT_YUV420]	= "YUV 4:2:0",
++	[VC4_HDMI_OUTPUT_YUV422]	= "YUV 4:2:2",
++	[VC4_HDMI_OUTPUT_YUV444]	= "YUV 4:4:4",
++};
++
++static const char *vc4_hdmi_output_fmt_str(enum vc4_hdmi_output_format fmt)
++{
++	if (fmt >= ARRAY_SIZE(output_format_str))
++		return "invalid";
++
++	return output_format_str[fmt];
++}
+ 
+ static unsigned long long
+ vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
+-				    unsigned int bpc);
++				    unsigned int bpc, enum vc4_hdmi_output_format fmt);
+ 
+ static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode,
+-					   unsigned int bpc)
++					   unsigned int bpc,
++					   enum vc4_hdmi_output_format fmt)
+ {
+-	unsigned long long clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc);
++	unsigned long long clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt);
+ 
+ 	return clock > HDMI_14_MAX_TMDS_CLK;
+ }
+@@ -284,7 +299,7 @@ static int vc4_hdmi_connector_get_modes(
+ 		struct drm_display_mode *mode;
+ 
+ 		list_for_each_entry(mode, &connector->probed_modes, head) {
+-			if (vc4_hdmi_mode_needs_scrambling(mode, 8)) {
++			if (vc4_hdmi_mode_needs_scrambling(mode, 8, VC4_HDMI_OUTPUT_RGB)) {
+ 				drm_warn_once(drm, "The core clock cannot reach frequencies high enough to support 4k @ 60Hz.");
+ 				drm_warn_once(drm, "Please change your config.txt file to add hdmi_enable_4kp60.");
+ 			}
+@@ -341,6 +356,7 @@ static void vc4_hdmi_connector_reset(str
+ 
+ 	new_state->base.max_bpc = 8;
+ 	new_state->base.max_requested_bpc = 8;
++	new_state->output_format = VC4_HDMI_OUTPUT_RGB;
+ 	drm_atomic_helper_connector_tv_reset(connector);
+ }
+ 
+@@ -357,6 +373,7 @@ vc4_hdmi_connector_duplicate_state(struc
+ 
+ 	new_state->pixel_rate = vc4_state->pixel_rate;
+ 	new_state->output_bpc = vc4_state->output_bpc;
++	new_state->output_format = vc4_state->output_format;
+ 	__drm_atomic_helper_connector_duplicate_state(connector, &new_state->base);
+ 
+ 	return &new_state->base;
+@@ -510,11 +527,38 @@ static void vc4_hdmi_write_infoframe(str
+ 		DRM_ERROR("Failed to wait for infoframe to start: %d\n", ret);
+ }
+ 
++static void vc4_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
++					      enum vc4_hdmi_output_format fmt)
++{
++	switch (fmt) {
++	case VC4_HDMI_OUTPUT_RGB:
++		frame->colorspace = HDMI_COLORSPACE_RGB;
++		break;
++
++	case VC4_HDMI_OUTPUT_YUV420:
++		frame->colorspace = HDMI_COLORSPACE_YUV420;
++		break;
++
++	case VC4_HDMI_OUTPUT_YUV422:
++		frame->colorspace = HDMI_COLORSPACE_YUV422;
++		break;
++
++	case VC4_HDMI_OUTPUT_YUV444:
++		frame->colorspace = HDMI_COLORSPACE_YUV444;
++		break;
++
++	default:
++		break;
++	}
++}
++
+ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
+ {
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ 	struct drm_connector *connector = &vc4_hdmi->connector;
+ 	struct drm_connector_state *cstate = connector->state;
++	struct vc4_hdmi_connector_state *vc4_state =
++		conn_state_to_vc4_hdmi_conn_state(cstate);
+ 	const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
+ 	union hdmi_infoframe frame;
+ 	int ret;
+@@ -534,6 +578,7 @@ static void vc4_hdmi_set_avi_infoframe(s
+ 					   HDMI_QUANTIZATION_RANGE_FULL :
+ 					   HDMI_QUANTIZATION_RANGE_LIMITED);
+ 	drm_hdmi_avi_infoframe_colorimetry(&frame.avi, cstate);
++	vc4_hdmi_avi_infoframe_colorspace(&frame.avi, vc4_state->output_format);
+ 	drm_hdmi_avi_infoframe_bars(&frame.avi, cstate);
+ 
+ 	vc4_hdmi_write_infoframe(encoder, &frame);
+@@ -636,7 +681,9 @@ static void vc4_hdmi_enable_scrambling(s
+ 	if (!vc4_hdmi_supports_scrambling(encoder, mode))
+ 		return;
+ 
+-	if (!vc4_hdmi_mode_needs_scrambling(mode, vc4_hdmi->output_bpc))
++	if (!vc4_hdmi_mode_needs_scrambling(mode,
++					    vc4_hdmi->output_bpc,
++					    vc4_hdmi->output_format))
+ 		return;
+ 
+ 	drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, true);
+@@ -824,6 +871,38 @@ static const u16 vc5_hdmi_csc_full_rgb_t
+ 	{ 0x0000, 0x0000, 0x1b80, 0x0400 },
+ };
+ 
++/*
++ * Conversion between Full Range RGB and Full Range YUV422 using the
++ * BT.709 Colorspace
++ *
++ * [  0.212639  0.715169  0.072192  0   ]
++ * [ -0.117208 -0.394207  0.511416  128 ]
++ * [  0.511416 -0.464524 -0.046891  128 ]
++ *
++ * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
++ */
++static const u16 vc5_hdmi_csc_full_rgb_to_full_yuv422_bt709[3][4] = {
++	{ 0x06ce, 0x16e3, 0x024f, 0x0000 },
++	{ 0xfc41, 0xf364, 0x105e, 0x2000 },
++	{ 0x105e, 0xf124, 0xfe81, 0x2000 },
++};
++
++/*
++ * Conversion between Full Range RGB and Full Range YUV444 using the
++ * BT.709 Colorspace
++ *
++ * [ -0.117208 -0.394207  0.511416  128 ]
++ * [  0.511416 -0.464524 -0.046891  128 ]
++ * [  0.212639  0.715169  0.072192  0   ]
++ *
++ * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
++ */
++static const u16 vc5_hdmi_csc_full_rgb_to_full_yuv444_bt709[3][4] = {
++	{ 0xfc41, 0xf364, 0x105e, 0x2000 },
++	{ 0x105e, 0xf124, 0xfe81, 0x2000 },
++	{ 0x06ce, 0x16e3, 0x024f, 0x0000 },
++};
++
+ static void vc5_hdmi_set_csc_coeffs(struct vc4_hdmi *vc4_hdmi,
+ 				    const u16 coeffs[3][4])
+ {
+@@ -841,19 +920,53 @@ static void vc5_hdmi_csc_setup(struct vc
+ 			       struct drm_connector_state *state,
+ 			       const struct drm_display_mode *mode)
+ {
++	struct vc4_hdmi_connector_state *vc4_state =
++		conn_state_to_vc4_hdmi_conn_state(state);
+ 	unsigned long flags;
++	u32 if_cfg = 0;
++	u32 if_xbar = 0x543210;
++	u32 csc_chan_ctl = 0;
+ 	u32 csc_ctl = VC5_MT_CP_CSC_CTL_ENABLE | VC4_SET_FIELD(VC4_HD_CSC_CTL_MODE_CUSTOM,
+ 							       VC5_MT_CP_CSC_CTL_MODE);
+ 
+ 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
+ 
+-	HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021);
++	switch (vc4_state->output_format) {
++	case VC4_HDMI_OUTPUT_YUV444:
++		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_full_yuv444_bt709);
++		break;
++
++	case VC4_HDMI_OUTPUT_YUV422:
++		csc_ctl |= VC4_SET_FIELD(VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD,
++					 VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422) |
++			VC5_MT_CP_CSC_CTL_USE_444_TO_422 |
++			VC5_MT_CP_CSC_CTL_USE_RNG_SUPPRESSION;
+ 
+-	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode))
+-		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb);
+-	else
+-		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity);
++		csc_chan_ctl |= VC4_SET_FIELD(VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP_LEGACY_STYLE,
++					      VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP);
++
++		if_cfg |= VC4_SET_FIELD(VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_FORMAT_422_LEGACY,
++					VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422);
++
++		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_full_yuv422_bt709);
++		break;
+ 
++	case VC4_HDMI_OUTPUT_RGB:
++		if_xbar = 0x354021;
++
++		if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode))
++			vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb);
++		else
++			vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity);
++		break;
++
++	default:
++		break;
++	}
++
++	HDMI_WRITE(HDMI_VEC_INTERFACE_CFG, if_cfg);
++	HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, if_xbar);
++	HDMI_WRITE(HDMI_CSC_CHANNEL_CTL, csc_chan_ctl);
+ 	HDMI_WRITE(HDMI_CSC_CTL, csc_ctl);
+ 
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+@@ -979,6 +1092,15 @@ static void vc5_hdmi_set_timings(struct
+ 		break;
+ 	}
+ 
++	/*
++	 * YCC422 is always 36-bit and not considered deep colour so
++	 * doesn't signal in GCP
++	 */
++	if (vc4_state->output_format == VC4_HDMI_OUTPUT_YUV422) {
++		gcp = 4;
++		gcp_en = false;
++	}
++
+ 	reg = HDMI_READ(HDMI_DEEP_COLOR_CONFIG_1);
+ 	reg &= ~(VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE_MASK |
+ 		 VC5_HDMI_DEEP_COLOR_CONFIG_1_COLOR_DEPTH_MASK);
+@@ -1258,12 +1380,97 @@ static void vc4_hdmi_encoder_atomic_mode
+ 
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 	vc4_hdmi->output_bpc = vc4_state->output_bpc;
++	vc4_hdmi->output_format = vc4_state->output_format;
+ 	memcpy(&vc4_hdmi->saved_adjusted_mode,
+ 	       &crtc_state->adjusted_mode,
+ 	       sizeof(vc4_hdmi->saved_adjusted_mode));
+ 	mutex_unlock(&vc4_hdmi->mutex);
+ }
+ 
++static bool
++vc4_hdmi_sink_supports_format_bpc(const struct vc4_hdmi *vc4_hdmi,
++				  const struct drm_display_info *info,
++				  const struct drm_display_mode *mode,
++				  unsigned int format, unsigned int bpc)
++{
++	struct drm_device *dev = vc4_hdmi->connector.dev;
++	u8 vic = drm_match_cea_mode(mode);
++
++	if (vic == 1 && bpc != 8) {
++		drm_dbg(dev, "VIC1 requires a bpc of 8, got %u\n", bpc);
++		return false;
++	}
++
++	if (!info->is_hdmi &&
++	    (format != VC4_HDMI_OUTPUT_RGB || bpc != 8)) {
++		drm_dbg(dev, "DVI Monitors require an RGB output at 8 bpc\n");
++		return false;
++	}
++
++	switch (format) {
++	case VC4_HDMI_OUTPUT_RGB:
++		drm_dbg(dev, "RGB Format, checking the constraints.\n");
++
++		if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444))
++			return false;
++
++		if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
++			drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
++			return false;
++		}
++
++		if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) {
++			drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
++			return false;
++		}
++
++		drm_dbg(dev, "RGB format supported in that configuration.\n");
++
++		return true;
++
++	case VC4_HDMI_OUTPUT_YUV422:
++		drm_dbg(dev, "YUV422 format, checking the constraints.\n");
++
++		if (!(info->color_formats & DRM_COLOR_FORMAT_YCRCB422)) {
++			drm_dbg(dev, "Sink doesn't support YUV422.\n");
++			return false;
++		}
++
++		if (bpc != 12) {
++			drm_dbg(dev, "YUV422 only supports 12 bpc.\n");
++			return false;
++		}
++
++		drm_dbg(dev, "YUV422 format supported in that configuration.\n");
++
++		return true;
++
++	case VC4_HDMI_OUTPUT_YUV444:
++		drm_dbg(dev, "YUV444 format, checking the constraints.\n");
++
++		if (!(info->color_formats & DRM_COLOR_FORMAT_YCRCB444)) {
++			drm_dbg(dev, "Sink doesn't support YUV444.\n");
++			return false;
++		}
++
++		if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
++			drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
++			return false;
++		}
++
++		if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) {
++			drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
++			return false;
++		}
++
++		drm_dbg(dev, "YUV444 format supported in that configuration.\n");
++
++		return true;
++	}
++
++	return false;
++}
++
+ static enum drm_mode_status
+ vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi,
+ 			     unsigned long long clock)
+@@ -1285,13 +1492,17 @@ vc4_hdmi_encoder_clock_valid(const struc
+ 
+ static unsigned long long
+ vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
+-				    unsigned int bpc)
++				    unsigned int bpc,
++				    enum vc4_hdmi_output_format fmt)
+ {
+ 	unsigned long long clock = mode->crtc_clock * 1000;
+ 
+ 	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+ 		clock = clock * 2;
+ 
++	if (fmt == VC4_HDMI_OUTPUT_YUV422)
++		bpc = 8;
++
+ 	return clock * bpc / 8;
+ }
+ 
+@@ -1299,11 +1510,11 @@ static int
+ vc4_hdmi_encoder_compute_clock(const struct vc4_hdmi *vc4_hdmi,
+ 			       struct vc4_hdmi_connector_state *vc4_state,
+ 			       const struct drm_display_mode *mode,
+-			       unsigned int bpc)
++			       unsigned int bpc, unsigned int fmt)
+ {
+ 	unsigned long long clock;
+ 
+-	clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc);
++	clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt);
+ 	if (vc4_hdmi_encoder_clock_valid(vc4_hdmi, clock) != MODE_OK)
+ 		return -EINVAL;
+ 
+@@ -1313,10 +1524,55 @@ vc4_hdmi_encoder_compute_clock(const str
+ }
+ 
+ static int
++vc4_hdmi_encoder_compute_format(const struct vc4_hdmi *vc4_hdmi,
++				struct vc4_hdmi_connector_state *vc4_state,
++				const struct drm_display_mode *mode,
++				unsigned int bpc)
++{
++	struct drm_device *dev = vc4_hdmi->connector.dev;
++	const struct drm_connector *connector = &vc4_hdmi->connector;
++	const struct drm_display_info *info = &connector->display_info;
++	unsigned int format;
++
++	drm_dbg(dev, "Trying with an RGB output\n");
++
++	format = VC4_HDMI_OUTPUT_RGB;
++	if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) {
++		int ret;
++
++		ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
++						     mode, bpc, format);
++		if (!ret) {
++			vc4_state->output_format = format;
++			return 0;
++		}
++	}
++
++	drm_dbg(dev, "Failed, Trying with an YUV422 output\n");
++
++	format = VC4_HDMI_OUTPUT_YUV422;
++	if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) {
++		int ret;
++
++		ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
++						     mode, bpc, format);
++		if (!ret) {
++			vc4_state->output_format = format;
++			return 0;
++		}
++	}
++
++	drm_dbg(dev, "Failed. No Format Supported for that bpc count.\n");
++
++	return -EINVAL;
++}
++
++static int
+ vc4_hdmi_encoder_compute_config(const struct vc4_hdmi *vc4_hdmi,
+ 				struct vc4_hdmi_connector_state *vc4_state,
+ 				const struct drm_display_mode *mode)
+ {
++	struct drm_device *dev = vc4_hdmi->connector.dev;
+ 	struct drm_connector_state *conn_state = &vc4_state->base;
+ 	unsigned int max_bpc = clamp_t(unsigned int, conn_state->max_bpc, 8, 12);
+ 	unsigned int bpc;
+@@ -1325,17 +1581,18 @@ vc4_hdmi_encoder_compute_config(const st
+ 	for (bpc = max_bpc; bpc >= 8; bpc -= 2) {
+ 		drm_dbg(dev, "Trying with a %d bpc output\n", bpc);
+ 
+-		ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
+-						     mode, bpc);
++		ret = vc4_hdmi_encoder_compute_format(vc4_hdmi, vc4_state,
++						      mode, bpc);
+ 		if (ret)
+ 			continue;
+ 
+ 		vc4_state->output_bpc = bpc;
+ 
+ 		drm_dbg(dev,
+-			"Mode %ux%u @ %uHz: Found configuration: bpc: %u, clock: %llu\n",
++			"Mode %ux%u @ %uHz: Found configuration: bpc: %u, fmt: %s, clock: %llu\n",
+ 			mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
+ 			vc4_state->output_bpc,
++			vc4_hdmi_output_fmt_str(vc4_state->output_format),
+ 			vc4_state->pixel_rate);
+ 
+ 		break;
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -121,6 +121,13 @@ struct vc4_hdmi_audio {
+ 	bool streaming;
+ };
+ 
++enum vc4_hdmi_output_format {
++	VC4_HDMI_OUTPUT_RGB,
++	VC4_HDMI_OUTPUT_YUV422,
++	VC4_HDMI_OUTPUT_YUV444,
++	VC4_HDMI_OUTPUT_YUV420,
++};
++
+ /* General HDMI hardware state. */
+ struct vc4_hdmi {
+ 	struct vc4_hdmi_audio audio;
+@@ -227,6 +234,12 @@ struct vc4_hdmi {
+ 	 */
+ 	unsigned int output_bpc;
+ 
++	/**
++	 * @output_format: Copy of @vc4_connector_state.output_format
++	 * for use outside of KMS hooks. Protected by @mutex.
++	 */
++	enum vc4_hdmi_output_format output_format;
++
+ 	/* VC5 debugfs regset */
+ 	struct debugfs_regset32 cec_regset;
+ 	struct debugfs_regset32 csc_regset;
+@@ -254,6 +267,7 @@ struct vc4_hdmi_connector_state {
+ 	struct drm_connector_state	base;
+ 	unsigned long long		pixel_rate;
+ 	unsigned int 			output_bpc;
++	enum vc4_hdmi_output_format	output_format;
+ };
+ 
+ static inline struct vc4_hdmi_connector_state *
+--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
+@@ -54,6 +54,7 @@ enum vc4_hdmi_field {
+ 	HDMI_CSC_24_23,
+ 	HDMI_CSC_32_31,
+ 	HDMI_CSC_34_33,
++	HDMI_CSC_CHANNEL_CTL,
+ 	HDMI_CSC_CTL,
+ 
+ 	/*
+@@ -119,6 +120,7 @@ enum vc4_hdmi_field {
+ 	HDMI_TX_PHY_POWERDOWN_CTL,
+ 	HDMI_TX_PHY_RESET_CTL,
+ 	HDMI_TX_PHY_TMDS_CLK_WORD_SEL,
++	HDMI_VEC_INTERFACE_CFG,
+ 	HDMI_VEC_INTERFACE_XBAR,
+ 	HDMI_VERTA0,
+ 	HDMI_VERTA1,
+@@ -246,6 +248,7 @@ static const struct vc4_hdmi_register __
+ 	VC4_HDMI_REG(HDMI_SCRAMBLER_CTL, 0x1c4),
+ 
+ 	VC5_DVP_REG(HDMI_CLOCK_STOP, 0x0bc),
++	VC5_DVP_REG(HDMI_VEC_INTERFACE_CFG, 0x0ec),
+ 	VC5_DVP_REG(HDMI_VEC_INTERFACE_XBAR, 0x0f0),
+ 
+ 	VC5_PHY_REG(HDMI_TX_PHY_RESET_CTL, 0x000),
+@@ -291,6 +294,7 @@ static const struct vc4_hdmi_register __
+ 	VC5_CSC_REG(HDMI_CSC_24_23, 0x010),
+ 	VC5_CSC_REG(HDMI_CSC_32_31, 0x014),
+ 	VC5_CSC_REG(HDMI_CSC_34_33, 0x018),
++	VC5_CSC_REG(HDMI_CSC_CHANNEL_CTL, 0x02c),
+ };
+ 
+ static const struct vc4_hdmi_register __maybe_unused vc5_hdmi_hdmi1_fields[] = {
+@@ -327,6 +331,7 @@ static const struct vc4_hdmi_register __
+ 	VC4_HDMI_REG(HDMI_SCRAMBLER_CTL, 0x1c4),
+ 
+ 	VC5_DVP_REG(HDMI_CLOCK_STOP, 0x0bc),
++	VC5_DVP_REG(HDMI_VEC_INTERFACE_CFG, 0x0ec),
+ 	VC5_DVP_REG(HDMI_VEC_INTERFACE_XBAR, 0x0f0),
+ 
+ 	VC5_PHY_REG(HDMI_TX_PHY_RESET_CTL, 0x000),
+@@ -372,6 +377,7 @@ static const struct vc4_hdmi_register __
+ 	VC5_CSC_REG(HDMI_CSC_24_23, 0x010),
+ 	VC5_CSC_REG(HDMI_CSC_32_31, 0x014),
+ 	VC5_CSC_REG(HDMI_CSC_34_33, 0x018),
++	VC5_CSC_REG(HDMI_CSC_CHANNEL_CTL, 0x02c),
+ };
+ 
+ static inline
+--- a/drivers/gpu/drm/vc4/vc4_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_regs.h
+@@ -796,11 +796,27 @@ enum {
+ # define VC4_HD_CSC_CTL_RGB2YCC			BIT(1)
+ # define VC4_HD_CSC_CTL_ENABLE			BIT(0)
+ 
++# define VC5_MT_CP_CSC_CTL_USE_444_TO_422	BIT(6)
++# define VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_MASK \
++						VC4_MASK(5, 4)
++# define VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD \
++						3
++# define VC5_MT_CP_CSC_CTL_USE_RNG_SUPPRESSION	BIT(3)
+ # define VC5_MT_CP_CSC_CTL_ENABLE		BIT(2)
+ # define VC5_MT_CP_CSC_CTL_MODE_MASK		VC4_MASK(1, 0)
+ 
++# define VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP_MASK \
++						VC4_MASK(7, 6)
++# define VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP_LEGACY_STYLE \
++						2
++
+ # define VC4_DVP_HT_CLOCK_STOP_PIXEL		BIT(1)
+ 
++# define VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_MASK \
++						VC4_MASK(3, 2)
++# define VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_FORMAT_422_LEGACY \
++						2
++
+ /* HVS display list information. */
+ #define HVS_BOOTLOADER_DLIST_END                32
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0636-media-v4l2-ctrls-Add-V4L2_CID_NOTIFY_GAINS-control.patch b/target/linux/bcm27xx/patches-5.15/950-0636-media-v4l2-ctrls-Add-V4L2_CID_NOTIFY_GAINS-control.patch
new file mode 100644
index 0000000000..67546c062c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0636-media-v4l2-ctrls-Add-V4L2_CID_NOTIFY_GAINS-control.patch
@@ -0,0 +1,51 @@
+From fa9c40c42f2db87e80ac4a89df6a5ecab1b98031 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Mon, 16 Aug 2021 13:39:08 +0200
+Subject: [PATCH] media: v4l2-ctrls: Add V4L2_CID_NOTIFY_GAINS control
+
+commit a9c80593ff80ddb7c6496624e5384e1ea3460a72 upstream.
+
+We add a new control V4L2_CID_NOTIFY_GAINS which allows the sensor to
+be notified what gains will be applied to the different colour
+channels by subsequent processing (such as by an ISP), even though the
+sensor will not apply any of these gains itself.
+
+For Bayer sensors this will be an array control taking 4 values which
+are the 4 gains arranged in the fixed order B, Gb, Gr and R,
+irrespective of the exact Bayer order of the sensor itself. The use of
+an array makes it straightforward to extend this control to non-Bayer
+sensors (for example, sensors with an RGBW pattern) in future.
+
+The units are in all cases linear with the default value indicating a
+gain of exactly 1.0. For example, if the default value were reported as
+128 then the value 192 would represent a gain of exactly 1.5.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+---
+ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 1 +
+ include/uapi/linux/v4l2-controls.h        | 1 +
+ 2 files changed, 2 insertions(+)
+
+--- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
++++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
+@@ -1109,6 +1109,7 @@ const char *v4l2_ctrl_get_name(u32 id)
+ 	case V4L2_CID_TEST_PATTERN_GREENR:	return "Green (Red) Pixel Value";
+ 	case V4L2_CID_TEST_PATTERN_BLUE:	return "Blue Pixel Value";
+ 	case V4L2_CID_TEST_PATTERN_GREENB:	return "Green (Blue) Pixel Value";
++	case V4L2_CID_NOTIFY_GAINS:		return "Notify Gains";
+ 
+ 	/* Image processing controls */
+ 	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
+--- a/include/uapi/linux/v4l2-controls.h
++++ b/include/uapi/linux/v4l2-controls.h
+@@ -1123,6 +1123,7 @@ enum v4l2_jpeg_chroma_subsampling {
+ #define V4L2_CID_TEST_PATTERN_BLUE		(V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 6)
+ #define V4L2_CID_TEST_PATTERN_GREENB		(V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 7)
+ #define V4L2_CID_UNIT_CELL_SIZE			(V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 8)
++#define V4L2_CID_NOTIFY_GAINS			(V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 9)
+ 
+ 
+ /* Image processing controls */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0637-media-v4l2-ctrls-Document-V4L2_CID_NOTIFY_GAINS-cont.patch b/target/linux/bcm27xx/patches-5.15/950-0637-media-v4l2-ctrls-Document-V4L2_CID_NOTIFY_GAINS-cont.patch
new file mode 100644
index 0000000000..55a2a4ef22
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0637-media-v4l2-ctrls-Document-V4L2_CID_NOTIFY_GAINS-cont.patch
@@ -0,0 +1,48 @@
+From dd91fe58de578570d49fe644eb05398a27510478 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Mon, 16 Aug 2021 13:39:09 +0200
+Subject: [PATCH] media: v4l2-ctrls: Document V4L2_CID_NOTIFY_GAINS
+ control
+
+commit 311a839a1ad255ebcb7291fb4e0d2ec2f32312a7 upstream.
+
+Add documentation for the V4L2_CID_NOTIFY_GAINS control.
+
+This control is required by sensors that need to know what colour
+gains will be applied to pixels by downstream processing (such as by
+an ISP), though the sensor does not apply these gains itself.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+---
+ .../media/v4l/ext-ctrls-image-source.rst      | 20 +++++++++++++++++++
+ 1 file changed, 20 insertions(+)
+
+--- a/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst
++++ b/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst
+@@ -72,3 +72,23 @@ Image Source Control IDs
+     * - __u32
+       - ``height``
+       - Height of the area.
++
++``V4L2_CID_NOTIFY_GAINS (integer array)``
++    The sensor is notified what gains will be applied to the different
++    colour channels by subsequent processing (such as by an ISP). The
++    sensor is merely informed of these values in case it performs
++    processing that requires them, but it does not apply them itself to
++    the output pixels.
++
++    Currently it is defined only for Bayer sensors, and is an array
++    control taking 4 gain values, being the gains for each of the
++    Bayer channels. The gains are always in the order B, Gb, Gr and R,
++    irrespective of the exact Bayer order of the sensor itself.
++
++    The use of an array allows this control to be extended to sensors
++    with, for example, non-Bayer CFAs (colour filter arrays).
++
++    The units for the gain values are linear, with the default value
++    representing a gain of exactly 1.0. For example, if this default value
++    is reported as being (say) 128, then a value of 192 would represent
++    a gain of exactly 1.5.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0638-Extending-ili9881c-driver-support-for-nwe080-panel.patch b/target/linux/bcm27xx/patches-5.15/950-0638-Extending-ili9881c-driver-support-for-nwe080-panel.patch
new file mode 100644
index 0000000000..b5b5043598
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0638-Extending-ili9881c-driver-support-for-nwe080-panel.patch
@@ -0,0 +1,318 @@
+From 813cf77a25bbcd6233822ef05c40545c12e09bec Mon Sep 17 00:00:00 2001
+From: Penk Chen <penk@cutiepi.io>
+Date: Mon, 20 Dec 2021 03:44:56 +0900
+Subject: [PATCH] Extending ili9881c driver support for nwe080 panel
+
+Signed-off-by: Penk Chen <penk@cutiepi.io>
+---
+ drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 253 +++++++++++++++++-
+ 1 file changed, 251 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
++++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+@@ -1,6 +1,8 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+  * Copyright (C) 2017-2018, Bootlin
++ * Copyright (C) 2021, Henson Li <henson@cutiepi.io>
++ * Copyright (C) 2021, Penk Chen <penk@cutiepi.io>
+  */
+ 
+ #include <linux/delay.h>
+@@ -42,6 +44,7 @@ struct ili9881c_desc {
+ 	const struct ili9881c_instr *init;
+ 	const size_t init_length;
+ 	const struct drm_display_mode *mode;
++	const unsigned flags;
+ };
+ 
+ struct ili9881c {
+@@ -453,6 +456,225 @@ static const struct ili9881c_instr k101_
+ 	ILI9881C_COMMAND_INSTR(0xD3, 0x3F), /* VN0 */
+ };
+ 
++static const struct ili9881c_instr nwe080_init[] = {
++	ILI9881C_SWITCH_PAGE_INSTR(3),
++	//GIP_1
++	ILI9881C_COMMAND_INSTR(0x01, 0x00),
++	ILI9881C_COMMAND_INSTR(0x02, 0x00),
++	ILI9881C_COMMAND_INSTR(0x03, 0x73),
++	ILI9881C_COMMAND_INSTR(0x04, 0x00),
++	ILI9881C_COMMAND_INSTR(0x05, 0x00),
++	ILI9881C_COMMAND_INSTR(0x06, 0x0A),
++	ILI9881C_COMMAND_INSTR(0x07, 0x00),
++	ILI9881C_COMMAND_INSTR(0x08, 0x00),
++	ILI9881C_COMMAND_INSTR(0x09, 0x20),
++	ILI9881C_COMMAND_INSTR(0x0a, 0x20),
++	ILI9881C_COMMAND_INSTR(0x0b, 0x00),
++	ILI9881C_COMMAND_INSTR(0x0c, 0x00),
++	ILI9881C_COMMAND_INSTR(0x0d, 0x00),
++	ILI9881C_COMMAND_INSTR(0x0e, 0x00),
++	ILI9881C_COMMAND_INSTR(0x0f, 0x1E),
++	ILI9881C_COMMAND_INSTR(0x10, 0x1E),
++	ILI9881C_COMMAND_INSTR(0x11, 0x00),
++	ILI9881C_COMMAND_INSTR(0x12, 0x00),
++	ILI9881C_COMMAND_INSTR(0x13, 0x00),
++	ILI9881C_COMMAND_INSTR(0x14, 0x00),
++	ILI9881C_COMMAND_INSTR(0x15, 0x00),
++	ILI9881C_COMMAND_INSTR(0x16, 0x00),
++	ILI9881C_COMMAND_INSTR(0x17, 0x00),
++	ILI9881C_COMMAND_INSTR(0x18, 0x00),
++	ILI9881C_COMMAND_INSTR(0x19, 0x00),
++	ILI9881C_COMMAND_INSTR(0x1A, 0x00),
++	ILI9881C_COMMAND_INSTR(0x1B, 0x00),
++	ILI9881C_COMMAND_INSTR(0x1C, 0x00),
++	ILI9881C_COMMAND_INSTR(0x1D, 0x00),
++	ILI9881C_COMMAND_INSTR(0x1E, 0x40),
++	ILI9881C_COMMAND_INSTR(0x1F, 0x80),
++	ILI9881C_COMMAND_INSTR(0x20, 0x06),
++	ILI9881C_COMMAND_INSTR(0x21, 0x01),
++	ILI9881C_COMMAND_INSTR(0x22, 0x00),
++	ILI9881C_COMMAND_INSTR(0x23, 0x00),
++	ILI9881C_COMMAND_INSTR(0x24, 0x00),
++	ILI9881C_COMMAND_INSTR(0x25, 0x00),
++	ILI9881C_COMMAND_INSTR(0x26, 0x00),
++	ILI9881C_COMMAND_INSTR(0x27, 0x00),
++	ILI9881C_COMMAND_INSTR(0x28, 0x33),
++	ILI9881C_COMMAND_INSTR(0x29, 0x03),
++	ILI9881C_COMMAND_INSTR(0x2A, 0x00),
++	ILI9881C_COMMAND_INSTR(0x2B, 0x00),
++	ILI9881C_COMMAND_INSTR(0x2C, 0x00),
++	ILI9881C_COMMAND_INSTR(0x2D, 0x00),
++	ILI9881C_COMMAND_INSTR(0x2E, 0x00),
++	ILI9881C_COMMAND_INSTR(0x2F, 0x00),
++	ILI9881C_COMMAND_INSTR(0x30, 0x00),
++	ILI9881C_COMMAND_INSTR(0x31, 0x00),
++	ILI9881C_COMMAND_INSTR(0x32, 0x00),
++	ILI9881C_COMMAND_INSTR(0x33, 0x00),
++	ILI9881C_COMMAND_INSTR(0x34, 0x04),
++	ILI9881C_COMMAND_INSTR(0x35, 0x00),
++	ILI9881C_COMMAND_INSTR(0x36, 0x00),
++	ILI9881C_COMMAND_INSTR(0x37, 0x00),
++	ILI9881C_COMMAND_INSTR(0x38, 0x3C),
++	ILI9881C_COMMAND_INSTR(0x39, 0x00),
++	ILI9881C_COMMAND_INSTR(0x3A, 0x00),
++	ILI9881C_COMMAND_INSTR(0x3B, 0x00),
++	ILI9881C_COMMAND_INSTR(0x3C, 0x00),
++	ILI9881C_COMMAND_INSTR(0x3D, 0x00),
++	ILI9881C_COMMAND_INSTR(0x3E, 0x00),
++	ILI9881C_COMMAND_INSTR(0x3F, 0x00),
++	ILI9881C_COMMAND_INSTR(0x40, 0x00),
++	ILI9881C_COMMAND_INSTR(0x41, 0x00),
++	ILI9881C_COMMAND_INSTR(0x42, 0x00),
++	ILI9881C_COMMAND_INSTR(0x43, 0x00),
++	ILI9881C_COMMAND_INSTR(0x44, 0x00),
++
++	ILI9881C_COMMAND_INSTR(0x50, 0x10),
++	ILI9881C_COMMAND_INSTR(0x51, 0x32),
++	ILI9881C_COMMAND_INSTR(0x52, 0x54),
++	ILI9881C_COMMAND_INSTR(0x53, 0x76),
++	ILI9881C_COMMAND_INSTR(0x54, 0x98),
++	ILI9881C_COMMAND_INSTR(0x55, 0xba),
++	ILI9881C_COMMAND_INSTR(0x56, 0x10),
++	ILI9881C_COMMAND_INSTR(0x57, 0x32),
++	ILI9881C_COMMAND_INSTR(0x58, 0x54),
++	ILI9881C_COMMAND_INSTR(0x59, 0x76),
++	ILI9881C_COMMAND_INSTR(0x5A, 0x98),
++	ILI9881C_COMMAND_INSTR(0x5B, 0xba),
++	ILI9881C_COMMAND_INSTR(0x5C, 0xdc),
++	ILI9881C_COMMAND_INSTR(0x5D, 0xfe),
++
++	//GIP_3
++	ILI9881C_COMMAND_INSTR(0x5E, 0x00),
++	ILI9881C_COMMAND_INSTR(0x5F, 0x01),
++	ILI9881C_COMMAND_INSTR(0x60, 0x00),
++	ILI9881C_COMMAND_INSTR(0x61, 0x15),
++	ILI9881C_COMMAND_INSTR(0x62, 0x14),
++	ILI9881C_COMMAND_INSTR(0x63, 0x0E),
++	ILI9881C_COMMAND_INSTR(0x64, 0x0F),
++	ILI9881C_COMMAND_INSTR(0x65, 0x0C),
++	ILI9881C_COMMAND_INSTR(0x66, 0x0D),
++	ILI9881C_COMMAND_INSTR(0x67, 0x06),
++	ILI9881C_COMMAND_INSTR(0x68, 0x02),
++	ILI9881C_COMMAND_INSTR(0x69, 0x02),
++	ILI9881C_COMMAND_INSTR(0x6A, 0x02),
++	ILI9881C_COMMAND_INSTR(0x6B, 0x02),
++	ILI9881C_COMMAND_INSTR(0x6C, 0x02),
++	ILI9881C_COMMAND_INSTR(0x6D, 0x02),
++	ILI9881C_COMMAND_INSTR(0x6E, 0x07),
++	ILI9881C_COMMAND_INSTR(0x6F, 0x02),
++	ILI9881C_COMMAND_INSTR(0x70, 0x02),
++	ILI9881C_COMMAND_INSTR(0x71, 0x02),
++	ILI9881C_COMMAND_INSTR(0x72, 0x02),
++	ILI9881C_COMMAND_INSTR(0x73, 0x02),
++	ILI9881C_COMMAND_INSTR(0x74, 0x02),
++
++	ILI9881C_COMMAND_INSTR(0x75, 0x01),
++	ILI9881C_COMMAND_INSTR(0x76, 0x00),
++	ILI9881C_COMMAND_INSTR(0x77, 0x14),
++	ILI9881C_COMMAND_INSTR(0x78, 0x15),
++	ILI9881C_COMMAND_INSTR(0x79, 0x0E),
++	ILI9881C_COMMAND_INSTR(0x7A, 0x0F),
++	ILI9881C_COMMAND_INSTR(0x7B, 0x0C),
++	ILI9881C_COMMAND_INSTR(0x7C, 0x0D),
++	ILI9881C_COMMAND_INSTR(0x7D, 0x06),
++	ILI9881C_COMMAND_INSTR(0x7E, 0x02),
++	ILI9881C_COMMAND_INSTR(0x7F, 0x02),
++	ILI9881C_COMMAND_INSTR(0x80, 0x02),
++	ILI9881C_COMMAND_INSTR(0x81, 0x02),
++	ILI9881C_COMMAND_INSTR(0x82, 0x02),
++	ILI9881C_COMMAND_INSTR(0x83, 0x02),
++	ILI9881C_COMMAND_INSTR(0x84, 0x07),
++	ILI9881C_COMMAND_INSTR(0x85, 0x02),
++	ILI9881C_COMMAND_INSTR(0x86, 0x02),
++	ILI9881C_COMMAND_INSTR(0x87, 0x02),
++	ILI9881C_COMMAND_INSTR(0x88, 0x02),
++	ILI9881C_COMMAND_INSTR(0x89, 0x02),
++	ILI9881C_COMMAND_INSTR(0x8A, 0x02),
++
++	ILI9881C_SWITCH_PAGE_INSTR(4),
++	ILI9881C_COMMAND_INSTR(0x6C, 0x15),
++	ILI9881C_COMMAND_INSTR(0x6E, 0x2A),
++
++	//clamp 15V
++	ILI9881C_COMMAND_INSTR(0x6F, 0x35),
++	ILI9881C_COMMAND_INSTR(0x3A, 0x92),
++	ILI9881C_COMMAND_INSTR(0x8D, 0x1F),
++	ILI9881C_COMMAND_INSTR(0x87, 0xBA),
++	ILI9881C_COMMAND_INSTR(0x26, 0x76),
++	ILI9881C_COMMAND_INSTR(0xB2, 0xD1),
++	ILI9881C_COMMAND_INSTR(0xB5, 0x27),
++	ILI9881C_COMMAND_INSTR(0x31, 0x75),
++	ILI9881C_COMMAND_INSTR(0x30, 0x03),
++	ILI9881C_COMMAND_INSTR(0x3B, 0x98),
++	ILI9881C_COMMAND_INSTR(0x35, 0x17),
++	ILI9881C_COMMAND_INSTR(0x33, 0x14),
++	ILI9881C_COMMAND_INSTR(0x38, 0x01),
++	ILI9881C_COMMAND_INSTR(0x39, 0x00),
++
++	ILI9881C_SWITCH_PAGE_INSTR(1),
++	// direction rotate
++	//ILI9881C_COMMAND_INSTR(0x22, 0x0B),
++	ILI9881C_COMMAND_INSTR(0x22, 0x0A),
++	ILI9881C_COMMAND_INSTR(0x31, 0x00),
++	ILI9881C_COMMAND_INSTR(0x53, 0x63),
++	ILI9881C_COMMAND_INSTR(0x55, 0x69),
++	ILI9881C_COMMAND_INSTR(0x50, 0xC7),
++	ILI9881C_COMMAND_INSTR(0x51, 0xC2),
++	ILI9881C_COMMAND_INSTR(0x60, 0x26),
++
++	ILI9881C_COMMAND_INSTR(0xA0, 0x08),
++	ILI9881C_COMMAND_INSTR(0xA1, 0x0F),
++	ILI9881C_COMMAND_INSTR(0xA2, 0x25),
++	ILI9881C_COMMAND_INSTR(0xA3, 0x01),
++	ILI9881C_COMMAND_INSTR(0xA4, 0x23),
++	ILI9881C_COMMAND_INSTR(0xA5, 0x18),
++	ILI9881C_COMMAND_INSTR(0xA6, 0x11),
++	ILI9881C_COMMAND_INSTR(0xA7, 0x1A),
++	ILI9881C_COMMAND_INSTR(0xA8, 0x81),
++	ILI9881C_COMMAND_INSTR(0xA9, 0x19),
++	ILI9881C_COMMAND_INSTR(0xAA, 0x26),
++	ILI9881C_COMMAND_INSTR(0xAB, 0x7C),
++	ILI9881C_COMMAND_INSTR(0xAC, 0x24),
++	ILI9881C_COMMAND_INSTR(0xAD, 0x1E),
++	ILI9881C_COMMAND_INSTR(0xAE, 0x5C),
++	ILI9881C_COMMAND_INSTR(0xAF, 0x2A),
++	ILI9881C_COMMAND_INSTR(0xB0, 0x2B),
++	ILI9881C_COMMAND_INSTR(0xB1, 0x50),
++	ILI9881C_COMMAND_INSTR(0xB2, 0x5C),
++	ILI9881C_COMMAND_INSTR(0xB3, 0x39),
++
++	ILI9881C_COMMAND_INSTR(0xC0, 0x08),
++	ILI9881C_COMMAND_INSTR(0xC1, 0x1F),
++	ILI9881C_COMMAND_INSTR(0xC2, 0x24),
++	ILI9881C_COMMAND_INSTR(0xC3, 0x1D),
++	ILI9881C_COMMAND_INSTR(0xC4, 0x04),
++	ILI9881C_COMMAND_INSTR(0xC5, 0x32),
++	ILI9881C_COMMAND_INSTR(0xC6, 0x24),
++	ILI9881C_COMMAND_INSTR(0xC7, 0x1F),
++	ILI9881C_COMMAND_INSTR(0xC8, 0x90),
++	ILI9881C_COMMAND_INSTR(0xC9, 0x20),
++	ILI9881C_COMMAND_INSTR(0xCA, 0x2C),
++	ILI9881C_COMMAND_INSTR(0xCB, 0x82),
++	ILI9881C_COMMAND_INSTR(0xCC, 0x19),
++	ILI9881C_COMMAND_INSTR(0xCD, 0x22),
++	ILI9881C_COMMAND_INSTR(0xCE, 0x4E),
++	ILI9881C_COMMAND_INSTR(0xCF, 0x28),
++	ILI9881C_COMMAND_INSTR(0xD0, 0x2D),
++	ILI9881C_COMMAND_INSTR(0xD1, 0x51),
++	ILI9881C_COMMAND_INSTR(0xD2, 0x5D),
++	ILI9881C_COMMAND_INSTR(0xD3, 0x39),
++
++	ILI9881C_SWITCH_PAGE_INSTR(0),
++	//PWM
++	ILI9881C_COMMAND_INSTR(0x51, 0x0F),
++	ILI9881C_COMMAND_INSTR(0x52, 0xFF),
++	ILI9881C_COMMAND_INSTR(0x53, 0x2C),
++
++	ILI9881C_COMMAND_INSTR(0x11, 0x00),
++	ILI9881C_COMMAND_INSTR(0x29, 0x00),
++	ILI9881C_COMMAND_INSTR(0x35, 0x00),
++};
++
+ static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel)
+ {
+ 	return container_of(panel, struct ili9881c, panel);
+@@ -603,6 +825,23 @@ static const struct drm_display_mode k10
+ 	.height_mm	= 217,
+ };
+ 
++static const struct drm_display_mode nwe080_default_mode = {
++	.clock 		= 71750,
++
++	.hdisplay	= 800,
++	.hsync_start	= 800 + 52,
++	.hsync_end	= 800 + 52 + 8,
++	.htotal		= 800 + 52 + 8 + 48,
++
++	.vdisplay	= 1280,
++	.vsync_start	= 1280 + 16,
++	.vsync_end	= 1280 + 16 + 6,
++	.vtotal		= 1280 + 16 + 6 + 15,
++
++	.width_mm 	= 107,
++	.height_mm 	= 170,
++};
++
+ static int ili9881c_get_modes(struct drm_panel *panel,
+ 			      struct drm_connector *connector)
+ {
+@@ -670,7 +909,7 @@ static int ili9881c_dsi_probe(struct mip
+ 
+ 	drm_panel_add(&ctx->panel);
+ 
+-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
++	dsi->mode_flags = ctx->desc->flags;
+ 	dsi->format = MIPI_DSI_FMT_RGB888;
+ 	dsi->lanes = 4;
+ 
+@@ -691,18 +930,28 @@ static const struct ili9881c_desc lhr050
+ 	.init = lhr050h41_init,
+ 	.init_length = ARRAY_SIZE(lhr050h41_init),
+ 	.mode = &lhr050h41_default_mode,
++	.flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+ };
+ 
+ static const struct ili9881c_desc k101_im2byl02_desc = {
+ 	.init = k101_im2byl02_init,
+ 	.init_length = ARRAY_SIZE(k101_im2byl02_init),
+ 	.mode = &k101_im2byl02_default_mode,
++	.flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
++};
++
++static const struct ili9881c_desc nwe080_desc = {
++	.init = nwe080_init,
++	.init_length = ARRAY_SIZE(nwe080_init),
++	.mode = &nwe080_default_mode,
++	.flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_VIDEO,
+ };
+ 
+ static const struct of_device_id ili9881c_of_match[] = {
+ 	{ .compatible = "bananapi,lhr050h41", .data = &lhr050h41_desc },
+ 	{ .compatible = "feixin,k101-im2byl02", .data = &k101_im2byl02_desc },
+-	{ }
++	{ .compatible = "nwe,nwe080", .data = &nwe080_desc },
++	{}
+ };
+ MODULE_DEVICE_TABLE(of, ili9881c_of_match);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0639-Add-panel-overlay-for-CutiePi.patch b/target/linux/bcm27xx/patches-5.15/950-0639-Add-panel-overlay-for-CutiePi.patch
new file mode 100644
index 0000000000..9f5b74d406
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0639-Add-panel-overlay-for-CutiePi.patch
@@ -0,0 +1,172 @@
+From dabd32c62cb2faa42feacafc6edbe8ab4b3395cb Mon Sep 17 00:00:00 2001
+From: Penk Chen <penk@cutiepi.io>
+Date: Mon, 20 Dec 2021 03:46:26 +0900
+Subject: [PATCH] Add panel overlay for CutiePi
+
+Signed-off-by: Penk Chen <penk@cutiepi.io>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |   6 +
+ .../dts/overlays/cutiepi-panel-overlay.dts    | 117 ++++++++++++++++++
+ arch/arm/boot/dts/overlays/overlay_map.dts    |   4 +
+ 4 files changed, 128 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/cutiepi-panel-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -34,6 +34,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	cap1106.dtbo \
+ 	chipdip-dac.dtbo \
+ 	cma.dtbo \
++	cutiepi-panel.dtbo \
+ 	dht11.dtbo \
+ 	dionaudio-loco.dtbo \
+ 	dionaudio-loco-v2.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -679,6 +679,12 @@ Params: cma-512                 CMA is 5
+         cma-default             Use upstream's default value
+ 
+ 
++Name:   cutiepi-panel
++Info:   8" TFT LCD display and touch panel used by cutiepi.io
++Load:   dtoverlay=cutiepi-panel
++Params: <None>
++
++
+ Name:   dht11
+ Info:   Overlay for the DHT11/DHT21/DHT22 humidity/temperature sensors
+         Also sometimes found with the part number(s) AM230x.
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/cutiepi-panel-overlay.dts
+@@ -0,0 +1,117 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2711";
++
++    fragment@0 {
++        target=<&dsi1>;
++
++        __overlay__ {
++            status = "okay";
++
++            #address-cells = <1>;
++            #size-cells = <0>;
++
++            port {
++                dsi1_out_port: endpoint {
++                    remote-endpoint = <&panel_dsi_in1>;
++                };
++            };
++
++            display1: panel@0 {
++                compatible = "nwe,nwe080";
++                reg=<0>;
++                backlight = <&rpi_backlight>;
++                reset-gpios = <&gpio 20 0>;
++                port {
++                    panel_dsi_in1: endpoint {
++                        remote-endpoint = <&dsi1_out_port>;
++                    };
++                };
++            };
++        };
++    };
++
++    fragment@1 {
++        target = <&gpio>;
++        __overlay__ {
++            pwm_pins: pwm_pins {
++                brcm,pins = <12>;
++                brcm,function = <4>; // ALT0
++            };
++        };
++    };
++
++    fragment@2 {
++        target = <&pwm>;
++        frag1: __overlay__ {
++            pinctrl-names = "default";
++            pinctrl-0 = <&pwm_pins>;
++            assigned-clock-rates = <1000000>;
++            status = "okay";
++        };
++    };
++
++    fragment@3 {
++        target-path = "/";
++        __overlay__ {
++            rpi_backlight: rpi_backlight {
++                compatible = "pwm-backlight";
++                brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
++                default-brightness-level = <6>;
++                pwms = <&pwm 0 200000>;
++                power-supply = <&vdd_3v3_reg>;
++                status = "okay";
++            };
++        };
++    };
++
++    fragment@4 {
++        target = <&i2c6>;
++        frag0: __overlay__ {
++            status = "okay";
++            pinctrl-names = "default";
++            pinctrl-0 = <&i2c6_pins>;
++            clock-frequency = <100000>;
++        };
++    };
++
++    fragment@5 {
++        target = <&i2c6_pins>;
++        __overlay__ {
++            brcm,pins = <22 23>;
++        };
++    };
++
++    fragment@6 {
++            target = <&gpio>;
++            __overlay__ {
++                goodix_pins: goodix_pins {
++                    brcm,pins = <21 26>; // interrupt and reset
++                    brcm,function = <0 0>; // in
++                    brcm,pull = <2 2>; // pull-up
++                };
++            };
++    };
++
++    fragment@7 {
++        target = <&i2c6>;
++        __overlay__ {
++            #address-cells = <1>;
++            #size-cells = <0>;
++            status = "okay";
++
++            gt9xx: gt9xx@5d {
++                compatible = "goodix,gt9271"; 
++                reg = <0x5D>;
++                pinctrl-names = "default";
++                pinctrl-0 = <&goodix_pins>;
++                interrupt-parent = <&gpio>;
++                interrupts = <21 2>; // high-to-low edge triggered
++                irq-gpios = <&gpio 21 0>; 
++                reset-gpios = <&gpio 26 0>;
++            };
++        };
++    };
++};
+--- a/arch/arm/boot/dts/overlays/overlay_map.dts
++++ b/arch/arm/boot/dts/overlays/overlay_map.dts
+@@ -5,6 +5,10 @@
+ 		deprecated = "use i2c-sensor,bmp085";
+ 	};
+ 
++	cutiepi-panel {
++		bcm2711;
++	};
++
+ 	highperi {
+ 		bcm2711;
+ 	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0640-dtoverlays-Enable-cam1_clock-when-using-tc358743-or-.patch b/target/linux/bcm27xx/patches-5.15/950-0640-dtoverlays-Enable-cam1_clock-when-using-tc358743-or-.patch
new file mode 100644
index 0000000000..00f8c96088
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0640-dtoverlays-Enable-cam1_clock-when-using-tc358743-or-.patch
@@ -0,0 +1,42 @@
+From bf29731068a77344efdf241a7a932ffdd3e8f931 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jakub=20Van=C4=9Bk?= <linuxtardis@gmail.com>
+Date: Tue, 28 Dec 2021 15:43:10 +0100
+Subject: [PATCH] dtoverlays: Enable cam1_clock when using tc358743 or
+ irs1125
+
+This fixes a regression introduced in 131f1322039284932ccb601a5cffdd9ca5d36d96
+(see also https://github.com/raspberrypi/linux/issues/4791).
+The tc358743 driver refused to bind to the device. The irs1125
+driver is likely behaving similarly.
+
+The new unified cam1_clk node that represents the fixed on-board
+oscillator is marked as disabled by default. These overlays didn't
+expect this and so the clock nodes were stuck in disabled state.
+
+This commit just adds the required status = "okay" line. Other sensor
+drivers do this too.
+---
+ arch/arm/boot/dts/overlays/irs1125-overlay.dts  | 1 +
+ arch/arm/boot/dts/overlays/tc358743-overlay.dts | 1 +
+ 2 files changed, 2 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/irs1125-overlay.dts
++++ b/arch/arm/boot/dts/overlays/irs1125-overlay.dts
+@@ -75,6 +75,7 @@
+ 	clk_frag: fragment@5 {
+ 		target = <&cam1_clk>;
+ 		__overlay__ {
++			status = "okay";
+ 			clock-frequency = <26000000>;
+ 		};
+ 	};
+--- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts
++++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
+@@ -78,6 +78,7 @@
+ 	clk_frag: fragment@6 {
+ 		target = <&cam1_clk>;
+ 		__overlay__ {
++			status = "okay";
+ 			clock-frequency = <27000000>;
+ 		};
+ 	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0641-uapi-v4l2-controls-Reset-V4L2_CID_USER_BCM2835_ISP_B.patch b/target/linux/bcm27xx/patches-5.15/950-0641-uapi-v4l2-controls-Reset-V4L2_CID_USER_BCM2835_ISP_B.patch
new file mode 100644
index 0000000000..68ef029dcb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0641-uapi-v4l2-controls-Reset-V4L2_CID_USER_BCM2835_ISP_B.patch
@@ -0,0 +1,33 @@
+From f138855380867522cffdfc1cbe4977eb1c319f48 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 4 Jan 2022 13:56:42 +0000
+Subject: [PATCH] uapi/v4l2-controls: Reset
+ V4L2_CID_USER_BCM2835_ISP_BASE to same as 5.10
+
+https://github.com/raspberrypi/linux/issues/4440
+
+Upstream has added additional device specific controls, so the
+V4L2_CID_USER_BASE + 0x10e0 value that had been defined for use with
+the ISP has been taken by something else (and +0x10f0 has been used as
+well)
+
+Duplicate the use on V4L2_CID_USER_BASE + 0x10e0 so that userspace
+(libcamera) doesn't need to change. Once the driver is upstream, then
+we'll update libcamera to adopt the new value as it then won't change.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ include/uapi/linux/v4l2-controls.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/include/uapi/linux/v4l2-controls.h
++++ b/include/uapi/linux/v4l2-controls.h
+@@ -214,7 +214,7 @@ enum v4l2_colorfx {
+ 
+ /* The base for the bcm2835-isp driver controls.
+  * We reserve 16 controls for this driver. */
+-#define V4L2_CID_USER_BCM2835_ISP_BASE		(V4L2_CID_USER_BASE + 0x10f0)
++#define V4L2_CID_USER_BCM2835_ISP_BASE		(V4L2_CID_USER_BASE + 0x10e0)
+ 
+ /* MPEG-class control IDs */
+ /* The MPEG controls are applicable to all codec controls
diff --git a/target/linux/bcm27xx/patches-5.15/950-0642-drm-vc4-hdmi-Fix-HDMI-monitor-detection-in-polled-mo.patch b/target/linux/bcm27xx/patches-5.15/950-0642-drm-vc4-hdmi-Fix-HDMI-monitor-detection-in-polled-mo.patch
new file mode 100644
index 0000000000..bbe81baa15
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0642-drm-vc4-hdmi-Fix-HDMI-monitor-detection-in-polled-mo.patch
@@ -0,0 +1,46 @@
+From a1bf3abe0c1093e81e5dd59b6d3b09b9ebb3a17d Mon Sep 17 00:00:00 2001
+From: Matthias Reichl <hias@horus.com>
+Date: Thu, 30 Dec 2021 14:28:37 +0100
+Subject: [PATCH] drm/vc4: hdmi: Fix HDMI monitor detection in polled
+ mode
+
+When vc4_hdmi_connector_detect() was called in
+connector_status_connected state it incorrectly cleared the
+hdmi_monitor flag, leading to no audio on RPi3.
+
+Fix this by clearing hdmi_monitor only when the hpd check
+indicated no connection or if reading the edid failed.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -242,7 +242,6 @@ vc4_hdmi_connector_detect(struct drm_con
+ 			connected = true;
+ 	}
+ 
+-	vc4_hdmi->encoder.hdmi_monitor = false;
+ 	if (connected) {
+ 		if (connector->status != connector_status_connected) {
+ 			struct edid *edid = drm_get_edid(connector, vc4_hdmi->ddc);
+@@ -251,6 +250,8 @@ vc4_hdmi_connector_detect(struct drm_con
+ 				cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid);
+ 				vc4_hdmi->encoder.hdmi_monitor = drm_detect_hdmi_monitor(edid);
+ 				kfree(edid);
++			} else {
++				vc4_hdmi->encoder.hdmi_monitor = false;
+ 			}
+ 		}
+ 
+@@ -260,6 +261,8 @@ vc4_hdmi_connector_detect(struct drm_con
+ 		return connector_status_connected;
+ 	}
+ 
++	vc4_hdmi->encoder.hdmi_monitor = false;
++
+ 	cec_phys_addr_invalidate(vc4_hdmi->cec_adap);
+ 	pm_runtime_put(&vc4_hdmi->pdev->dev);
+ 	mutex_unlock(&vc4_hdmi->mutex);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0643-drm-vc4-hdmi-Fix-no-video-output-on-DVI-monitors.patch b/target/linux/bcm27xx/patches-5.15/950-0643-drm-vc4-hdmi-Fix-no-video-output-on-DVI-monitors.patch
new file mode 100644
index 0000000000..9f2301119e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0643-drm-vc4-hdmi-Fix-no-video-output-on-DVI-monitors.patch
@@ -0,0 +1,29 @@
+From 64c3b233b38af0817c70d142c65b915ca1fbc71a Mon Sep 17 00:00:00 2001
+From: Matthias Reichl <hias@horus.com>
+Date: Thu, 30 Dec 2021 15:12:19 +0100
+Subject: [PATCH] drm/vc4: hdmi: Fix no video output on DVI monitors
+
+The drm edid parser doesn't signal RGB support on DVI monitors
+with old edid versions, leading to 8-bit RGB mode being rejected
+and no video on DVI monitors.
+
+As 8-bit RGB is mandatory on HDMI and DVI monitors anyways we can
+simply drop the RGB format check, aligning vc4 with other drivers.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1414,9 +1414,6 @@ vc4_hdmi_sink_supports_format_bpc(const
+ 	case VC4_HDMI_OUTPUT_RGB:
+ 		drm_dbg(dev, "RGB Format, checking the constraints.\n");
+ 
+-		if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444))
+-			return false;
+-
+ 		if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
+ 			drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
+ 			return false;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0644-staging-bcm2835-codec-Fix-typo.patch b/target/linux/bcm27xx/patches-5.15/950-0644-staging-bcm2835-codec-Fix-typo.patch
new file mode 100644
index 0000000000..7092e238f1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0644-staging-bcm2835-codec-Fix-typo.patch
@@ -0,0 +1,21 @@
+From 7b9206228eaaa5b917d5c8be383cec0ddef99f90 Mon Sep 17 00:00:00 2001
+From: Andriy Gelman <andriy.gelman@gmail.com>
+Date: Sun, 2 Jan 2022 12:22:52 -0500
+Subject: [PATCH] staging/bcm2835-codec: Fix typo
+
+Signed-off-by: Andriy Gelman <andriy.gelman@gmail.com>
+---
+ .../staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c    | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1563,7 +1563,7 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 	q_data->bytesperline = f->fmt.pix_mp.plane_fmt[0].bytesperline;
+ 	q_data->sizeimage = f->fmt.pix_mp.plane_fmt[0].sizeimage;
+ 
+-	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Calulated bpl as %u, size %u\n",
++	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Calculated bpl as %u, size %u\n",
+ 		 q_data->bytesperline, q_data->sizeimage);
+ 
+ 	if (ctx->dev->role == DECODE &&
diff --git a/target/linux/bcm27xx/patches-5.15/950-0645-media-i2c-ov9281-Increase-diff-between-VTS-and-max-e.patch b/target/linux/bcm27xx/patches-5.15/950-0645-media-i2c-ov9281-Increase-diff-between-VTS-and-max-e.patch
new file mode 100644
index 0000000000..cc4928f4ef
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0645-media-i2c-ov9281-Increase-diff-between-VTS-and-max-e.patch
@@ -0,0 +1,60 @@
+From 0f60668a144d9bb7e9f313c389d078fd9e3befe2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 4 Jan 2022 14:46:01 +0000
+Subject: [PATCH] media: i2c: ov9281: Increase diff between VTS and max
+ exposure
+
+The driver did allow the exposure to go up to VTS - 4 lines,
+but this would produce a visible line on 1280x800, and a stall of
+the sensor at 640x480.
+
+Whilst it appears to work with a difference of 5, the datasheet states
+there should be at least 25 lines difference between VTS and exposure,
+so use that value.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov9281.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -52,7 +52,11 @@
+ #define OV9281_REG_EXPOSURE		0x3500
+ #define	OV9281_EXPOSURE_MIN		4
+ #define	OV9281_EXPOSURE_STEP		1
+-#define OV9281_VTS_MAX			0x7fff
++/*
++ * Number of lines less than frame length (VTS) that exposure must be.
++ * Datasheet states 25, although empirically 5 appears to work.
++ */
++#define OV9281_EXPOSURE_OFFSET		25
+ 
+ #define OV9281_REG_GAIN_H		0x3508
+ #define OV9281_REG_GAIN_L		0x3509
+@@ -69,6 +73,7 @@
+ #define OV9281_TEST_PATTERN_DISABLE	0x0
+ 
+ #define OV9281_REG_VTS			0x380e
++#define OV9281_VTS_MAX			0x7fff
+ 
+ /*
+  * OV9281 native and active pixel array size.
+@@ -967,7 +972,7 @@ static int ov9281_set_ctrl(struct v4l2_c
+ 	switch (ctrl->id) {
+ 	case V4L2_CID_VBLANK:
+ 		/* Update max exposure while meeting expected vblanking */
+-		max = ov9281->cur_mode->height + ctrl->val - 4;
++		max = ov9281->cur_mode->height + ctrl->val - OV9281_EXPOSURE_OFFSET;
+ 		__v4l2_ctrl_modify_range(ov9281->exposure,
+ 					 ov9281->exposure->minimum, max,
+ 					 ov9281->exposure->step,
+@@ -1062,7 +1067,7 @@ static int ov9281_initialize_controls(st
+ 					   OV9281_VTS_MAX - mode->height, 1,
+ 					   vblank_def);
+ 
+-	exposure_max = mode->vts_def - 4;
++	exposure_max = mode->vts_def - OV9281_EXPOSURE_OFFSET;
+ 	ov9281->exposure = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
+ 					     V4L2_CID_EXPOSURE,
+ 					     OV9281_EXPOSURE_MIN, exposure_max,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0646-Use-GitHubs-issue-form-for-bug-reports.patch b/target/linux/bcm27xx/patches-5.15/950-0646-Use-GitHubs-issue-form-for-bug-reports.patch
new file mode 100644
index 0000000000..ebdd13639b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0646-Use-GitHubs-issue-form-for-bug-reports.patch
@@ -0,0 +1,163 @@
+From 51fe0fbf8d49a8d832795b8a12f0c2f83d290aab Mon Sep 17 00:00:00 2001
+From: Andreas Blaesius <andi@unlegacy-android.org>
+Date: Wed, 5 Jan 2022 20:38:39 +0100
+Subject: [PATCH] Use GitHubs issue form for bug reports
+
+Use GitHubs issue form for bug reports.
+
+- modern look
+- user don't need to mess with given markdown parts while filling the issue template
+
+Setup config.yml for general questions and problems with the Raspbian distribution packages.
+---
+ .github/ISSUE_TEMPLATE/bug_report.md  | 34 ----------
+ .github/ISSUE_TEMPLATE/bug_report.yml | 91 +++++++++++++++++++++++++++
+ .github/ISSUE_TEMPLATE/config.yml     |  9 +++
+ 3 files changed, 100 insertions(+), 34 deletions(-)
+ delete mode 100644 .github/ISSUE_TEMPLATE/bug_report.md
+ create mode 100644 .github/ISSUE_TEMPLATE/bug_report.yml
+ create mode 100644 .github/ISSUE_TEMPLATE/config.yml
+
+--- a/.github/ISSUE_TEMPLATE/bug_report.md
++++ /dev/null
+@@ -1,34 +0,0 @@
+----
+-name: Bug report
+-about: Create a report to help us fix your issue
+-
+----
+-
+-**Is this the right place for my bug report?**
+-This repository contains the Linux kernel used on the Raspberry Pi. If you believe that the issue you are seeing is kernel-related, this is the right place. If not, we have other repositories for the GPU firmware at [github.com/raspberrypi/firmware](https://github.com/raspberrypi/firmware) and Raspberry Pi userland applications at [github.com/raspberrypi/userland](https://github.com/raspberrypi/userland). If you have problems with the Raspbian distribution packages, report them in the [github.com/RPi-Distro/repo](https://github.com/RPi-Distro/repo). If you simply have a question, then [the Raspberry Pi forums](https://www.raspberrypi.org/forums) are the best place to ask it.
+-
+-**Describe the bug**
+-Add a clear and concise description of what you think the bug is.
+-
+-**To reproduce**
+-List the steps required to reproduce the issue.
+-
+-**Expected behaviour**
+-Add a clear and concise description of what you expected to happen.
+-
+-**Actual behaviour**
+-Add a clear and concise description of what actually happened.
+-
+-**System**
+- Copy and paste the results of the raspinfo command in to this section. Alternatively, copy and paste a pastebin link, or add answers to the following questions:
+-
+-* Which model of Raspberry Pi? e.g. Pi3B+, PiZeroW
+-* Which OS and version (`cat /etc/rpi-issue`)?
+-* Which firmware version (`vcgencmd version`)?
+-* Which kernel version (`uname -a`)?
+-
+-**Logs**
+-If applicable, add the relevant output from `dmesg` or similar.
+-
+-**Additional context**
+-Add any other relevant context for the problem.
+--- /dev/null
++++ b/.github/ISSUE_TEMPLATE/bug_report.yml
+@@ -0,0 +1,91 @@
++name: "Bug report"
++description: Create a report to help us fix your issue
++body:
++- type: markdown
++  attributes:
++    value: |
++      **Is this the right place for my bug report?**
++      This repository contains the Linux kernel used on the Raspberry Pi.
++      If you believe that the issue you are seeing is kernel-related, this is the right place.
++      If not, we have other repositories for the GPU firmware at [github.com/raspberrypi/firmware](https://github.com/raspberrypi/firmware) and Raspberry Pi userland applications at [github.com/raspberrypi/userland](https://github.com/raspberrypi/userland).
++      
++      If you have problems with the Raspbian distribution packages, report them in the [github.com/RPi-Distro/repo](https://github.com/RPi-Distro/repo).
++      If you simply have a question, then [the Raspberry Pi forums](https://www.raspberrypi.org/forums) are the best place to ask it.
++
++- type: textarea
++  id: description
++  attributes:
++    label: Describe the bug
++    description: |
++      Add a clear and concise description of what you think the bug is.
++  validations:
++    required: true
++
++- type: textarea
++  id: reproduce
++  attributes:
++    label: Steps to reproduce the behaviour
++    description: |
++      List the steps required to reproduce the issue.
++  validations:
++    required: true
++
++- type: dropdown
++  id: model
++  attributes:
++    label: Device (s)
++    description: On which device you are facing the bug?
++    multiple: true
++    options:
++      - Raspberry Pi Zero
++      - Raspberry Pi Zero W / WH
++      - Raspberry Pi Zero 2 W
++      - Raspberry Pi 1 Mod. A
++      - Raspberry Pi 1 Mod. A+
++      - Raspberry Pi 1 Mod. B
++      - Raspberry Pi 1 Mod. B+
++      - Raspberry Pi 2 Mod. B
++      - Raspberry Pi 2 Mod. B v1.2
++      - Raspberry Pi 3 Mod. A+
++      - Raspberry Pi 3 Mod. B
++      - Raspberry Pi 3 Mod. B+
++      - Raspberry Pi 4 Mod. B
++      - Raspberry Pi 400
++      - Raspberry Pi CM1
++      - Raspberry Pi CM3
++      - Raspberry Pi CM3 Lite
++      - Raspberry Pi CM3+
++      - Raspberry Pi CM3+ Lite
++      - Raspberry Pi CM4
++      - Raspberry Pi CM4 Lite
++      - Other
++  validations:
++    required: true
++
++- type: textarea
++  id: system
++  attributes:
++    label: System
++    description: |
++      Copy and paste the results of the raspinfo command in to this section.
++      Alternatively, copy and paste a pastebin link, or add answers to the following questions:
++      * Which OS and version (`cat /etc/rpi-issue`)?
++      * Which firmware version (`vcgencmd version`)?
++      * Which kernel version (`uname -a`)?
++  validations:
++    required: true
++
++- type: textarea
++  id: logs
++  attributes:
++    label: Logs
++    description: |
++      If applicable, add the relevant output from `dmesg` or similar.
++
++- type: textarea
++  id: additional
++  attributes:
++    label: Additional context
++    description: |
++      Add any other relevant context for the problem.
++
+--- /dev/null
++++ b/.github/ISSUE_TEMPLATE/config.yml
+@@ -0,0 +1,9 @@
++blank_issues_enabled: false
++contact_links:
++  - name: "⛔ Question"
++    url: https://www.raspberrypi.org/forums
++    about: "Please do not use GitHub for asking questions. If you simply have a question, then the Raspberry Pi forums are the best place to ask it. Thanks in advance for helping us keep the issue tracker clean!"
++  - name: "⛔ Problems with the Raspbian distribution packages"
++    url: https://github.com/RPi-Distro/repo
++    about: "If you have problems with the Raspbian distribution packages, please report them in the github.com/RPi-Distro/repo."
++
diff --git a/target/linux/bcm27xx/patches-5.15/950-0647-bcm2835-v4l2-isp-Add-missing-lock-initialization.patch b/target/linux/bcm27xx/patches-5.15/950-0647-bcm2835-v4l2-isp-Add-missing-lock-initialization.patch
new file mode 100644
index 0000000000..445efc793e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0647-bcm2835-v4l2-isp-Add-missing-lock-initialization.patch
@@ -0,0 +1,51 @@
+From b1656894eef29ecd73ee239571c7ff3449bdedf2 Mon Sep 17 00:00:00 2001
+From: Padmanabha Srinivasaiah <treasure4paddy@gmail.com>
+Date: Thu, 30 Dec 2021 21:45:10 +0100
+Subject: [PATCH] bcm2835-v4l2-isp: Add missing lock initialization
+
+ISP device allocation is dynamic hence the locks too.
+struct mutex queue_lock is not initialized which result in bug.
+
+Fixing same by initializing it.
+
+[   29.847138] INFO: trying to register non-static key.
+[   29.847156] The code is fine but needs lockdep annotation, or maybe
+[   29.847159] you didn't initialize this object before use?
+[   29.847161] turning off the locking correctness validator.
+[   29.847167] CPU: 1 PID: 343 Comm: v4l_id Tainted: G         C        5.15.11-rt24-v8+ #8
+[   29.847187] Hardware name: Raspberry Pi 4 Model B Rev 1.4 (DT)
+[   29.847194] Call trace:
+[   29.847197]  dump_backtrace+0x0/0x1b8
+[   29.847227]  show_stack+0x20/0x30
+[   29.847240]  dump_stack_lvl+0x8c/0xb8
+[   29.847254]  dump_stack+0x18/0x34
+[   29.847263]  register_lock_class+0x494/0x4a0
+[   29.847278]  __lock_acquire+0x80/0x1680
+[   29.847289]  lock_acquire+0x214/0x3a0
+[   29.847300]  mutex_lock_nested+0x70/0xc8
+[   29.847312]  _vb2_fop_release+0x3c/0xa8 [videobuf2_v4l2]
+[   29.847346]  vb2_fop_release+0x34/0x60 [videobuf2_v4l2]
+[   29.847367]  v4l2_release+0xc8/0x108 [videodev]
+[   29.847453]  __fput+0x8c/0x258
+[   29.847476]  ____fput+0x18/0x28
+[   29.847487]  task_work_run+0x98/0x180
+[   29.847502]  do_notify_resume+0x228/0x3f8
+[   29.847515]  el0_svc+0xec/0xf0
+[   29.847523]  el0t_64_sync_handler+0x90/0xb8
+[   29.847531]  el0t_64_sync+0x180/0x184
+
+Signed-off-by: Padmanabha Srinivasaiah <treasure4paddy@gmail.com>
+---
+ drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -1294,6 +1294,7 @@ static int register_node(struct bcm2835_
+ 	int ret;
+ 
+ 	mutex_init(&node->lock);
++	mutex_init(&node->queue_lock);
+ 
+ 	node->dev = dev;
+ 	vfd = &node->vfd;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0648-overlays-Add-overlay-for-Azoteq-IQS550.patch b/target/linux/bcm27xx/patches-5.15/950-0648-overlays-Add-overlay-for-Azoteq-IQS550.patch
new file mode 100644
index 0000000000..3f5c5642cf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0648-overlays-Add-overlay-for-Azoteq-IQS550.patch
@@ -0,0 +1,97 @@
+From 7c9c2e970b0a047ae2a747752fdd12e31dbb2451 Mon Sep 17 00:00:00 2001
+From: Jeff LaBundy <jeff@labundy.com>
+Date: Mon, 28 Jan 2019 23:11:47 -0600
+Subject: [PATCH] overlays: Add overlay for Azoteq IQS550
+
+This patch adds a device tree overlay for the Azoteq IQS550
+trackpad/touchscreen controller.
+
+Signed-off-by: Jeff LaBundy <jeff@labundy.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 13 ++++++
+ arch/arm/boot/dts/overlays/iqs550-overlay.dts | 46 +++++++++++++++++++
+ 3 files changed, 60 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/iqs550-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -106,6 +106,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	iqaudio-dac.dtbo \
+ 	iqaudio-dacplus.dtbo \
+ 	iqaudio-digi-wm8804-audio.dtbo \
++	iqs550.dtbo \
+ 	irs1125.dtbo \
+ 	jedec-spi-nor.dtbo \
+ 	justboom-both.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1991,6 +1991,19 @@ Params: card_name               Override
+                                 dai stream name.
+ 
+ 
++Name:   iqs550
++Info:   Enables I2C connected Azoteq IQS550 trackpad/touchscreen controller
++        using GPIO 4 (pin 7 on GPIO header) for interrupt.
++Load:   dtoverlay=iqs550,<param>=<val>
++Params: interrupt               GPIO used for interrupt (default 4)
++        reset                   GPIO used for reset (optional)
++        sizex                   Touchscreen size x (default 800)
++        sizey                   Touchscreen size y (default 480)
++        invx                    Touchscreen inverted x axis
++        invy                    Touchscreen inverted y axis
++        swapxy                  Touchscreen swapped x y axis
++
++
+ Name:   irs1125
+ Info:   Infineon irs1125 TOF camera module.
+         Uses Unicam 1, which is the standard camera connector on most Pi
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/iqs550-overlay.dts
+@@ -0,0 +1,46 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++// Definitions for Azoteq IQS550 trackpad/touchscreen controller
++/dts-v1/;
++/plugin/;
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			iqs550: iqs550@74 {
++				compatible = "azoteq,iqs550";
++				reg = <0x74>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
++				touchscreen-size-x = <800>;
++				touchscreen-size-y = <480>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&iqs550>;
++		iqs550_reset: __dormant__ {
++			reset-gpios = <&gpio 255 (GPIO_ACTIVE_LOW |
++						  GPIO_PUSH_PULL)>;
++		};
++	};
++
++	__overrides__ {
++		interrupt = <&iqs550>,"interrupts:0";
++		reset = <0>,"+1", <&iqs550_reset>,"reset-gpios:4";
++		sizex = <&iqs550>,"touchscreen-size-x:0";
++		sizey = <&iqs550>,"touchscreen-size-y:0";
++		invx = <&iqs550>,"touchscreen-inverted-x?";
++		invy = <&iqs550>,"touchscreen-inverted-y?";
++		swapxy = <&iqs550>,"touchscreen-swapped-x-y?";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0649-dtoverlays-Add-backlight-gpio-parameter-to-vc4-kms-d.patch b/target/linux/bcm27xx/patches-5.15/950-0649-dtoverlays-Add-backlight-gpio-parameter-to-vc4-kms-d.patch
new file mode 100644
index 0000000000..e10dc1f68c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0649-dtoverlays-Add-backlight-gpio-parameter-to-vc4-kms-d.patch
@@ -0,0 +1,60 @@
+From 97a59d460244efdb87b464b9f07c1e90e7e7129a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 7 Jan 2022 11:12:08 +0000
+Subject: [PATCH] dtoverlays: Add backlight-gpio parameter to
+ vc4-kms-dpi-generic
+
+To allow for the cases where a simple panel does have a GPIO
+controlled backlight. Defaults to having no backlight defined.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             |  2 ++
+ .../overlays/vc4-kms-dpi-generic-overlay.dts  | 19 +++++++++++++++++++
+ 2 files changed, 21 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3638,6 +3638,8 @@ Params: clock-frequency         Display
+         rgb888                  Change to RGB888 output on GPIOs 0-27
+         bus-format              Override the bus format for a MEDIA_BUS_FMT_*
+                                 value. NB also overridden by rgbXXX overrides.
++        backlight-gpio          Defines a GPIO to be used for backlight control
++                                (default of none).
+ 
+ 
+ Name:   vc4-kms-dsi-7inch
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -63,6 +63,23 @@
+ 		};
+ 	};
+ 
++	fragment@2 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight>;
++		};
++	};
++
++	fragment@3 {
++		target-path = "/";
++		__dormant__  {
++			backlight: backlight {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
++			};
++		};
++	};
++
+ 	__overrides__ {
+ 		clock-frequency = <&timing>, "clock-frequency:0";
+ 		hactive = <&timing>, "hactive:0";
+@@ -88,5 +105,7 @@
+ 		rgb888 = <&panel>, "bus-format:0=0x100a",
+ 			<&dpi_node>, "pinctrl-0:0=",<&dpi_gpio0>;
+ 		bus-format = <&panel>, "bus-format:0";
++		backlight-gpio = <0>, "+2+3",
++			<&backlight>, "gpios:4";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0650-drm-vc4-Add-alpha_blend_mode-property-to-each-plane.patch b/target/linux/bcm27xx/patches-5.15/950-0650-drm-vc4-Add-alpha_blend_mode-property-to-each-plane.patch
new file mode 100644
index 0000000000..23162421c3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0650-drm-vc4-Add-alpha_blend_mode-property-to-each-plane.patch
@@ -0,0 +1,108 @@
+From 7760958a0fb50b0e20f88e220f55798ec154c41e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 8 Jan 2022 13:24:10 +0000
+Subject: [PATCH] drm/vc4: Add alpha_blend_mode property to each plane.
+
+Move from only supporting the default of pre-multiplied
+alpha to supporting user specified blend mode using the
+standardised property.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 62 ++++++++++++++++++++++++++-------
+ 1 file changed, 49 insertions(+), 13 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -663,6 +663,48 @@ static const u32 colorspace_coeffs[2][DR
+ 	}
+ };
+ 
++static u32 vc4_hvs4_get_alpha_blend_mode(struct drm_plane_state *state)
++{
++	if (!state->fb->format->has_alpha)
++		return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED,
++				     SCALER_POS2_ALPHA_MODE);
++
++	switch (state->pixel_blend_mode) {
++	case DRM_MODE_BLEND_PIXEL_NONE:
++		return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED,
++				     SCALER_POS2_ALPHA_MODE);
++	default:
++	case DRM_MODE_BLEND_PREMULTI:
++		return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE,
++				     SCALER_POS2_ALPHA_MODE) |
++			SCALER_POS2_ALPHA_PREMULT;
++	case DRM_MODE_BLEND_COVERAGE:
++		return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE,
++				     SCALER_POS2_ALPHA_MODE);
++	}
++}
++
++static u32 vc4_hvs5_get_alpha_blend_mode(struct drm_plane_state *state)
++{
++	if (!state->fb->format->has_alpha)
++		return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED,
++				     SCALER5_CTL2_ALPHA_MODE);
++
++	switch (state->pixel_blend_mode) {
++	case DRM_MODE_BLEND_PIXEL_NONE:
++		return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED,
++				     SCALER5_CTL2_ALPHA_MODE);
++	default:
++	case DRM_MODE_BLEND_PREMULTI:
++		return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE,
++				     SCALER5_CTL2_ALPHA_MODE) |
++			SCALER5_CTL2_ALPHA_PREMULT;
++	case DRM_MODE_BLEND_COVERAGE:
++		return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE,
++				     SCALER5_CTL2_ALPHA_MODE);
++	}
++}
++
+ /* Writes out a full display list for an active plane to the plane's
+  * private dlist state.
+  */
+@@ -945,13 +987,8 @@ static int vc4_plane_mode_set(struct drm
+ 		/* Position Word 2: Source Image Size, Alpha */
+ 		vc4_state->pos2_offset = vc4_state->dlist_count;
+ 		vc4_dlist_write(vc4_state,
+-				VC4_SET_FIELD(fb->format->has_alpha ?
+-					      SCALER_POS2_ALPHA_MODE_PIPELINE :
+-					      SCALER_POS2_ALPHA_MODE_FIXED,
+-					      SCALER_POS2_ALPHA_MODE) |
+ 				(mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) |
+-				(fb->format->has_alpha ?
+-						SCALER_POS2_ALPHA_PREMULT : 0) |
++				vc4_hvs4_get_alpha_blend_mode(state) |
+ 				VC4_SET_FIELD(vc4_state->src_w[0],
+ 					      SCALER_POS2_WIDTH) |
+ 				VC4_SET_FIELD(vc4_state->src_h[0],
+@@ -996,14 +1033,9 @@ static int vc4_plane_mode_set(struct drm
+ 		vc4_dlist_write(vc4_state,
+ 				VC4_SET_FIELD(state->alpha >> 4,
+ 					      SCALER5_CTL2_ALPHA) |
+-				(fb->format->has_alpha ?
+-					SCALER5_CTL2_ALPHA_PREMULT : 0) |
++				vc4_hvs5_get_alpha_blend_mode(state) |
+ 				(mix_plane_alpha ?
+-					SCALER5_CTL2_ALPHA_MIX : 0) |
+-				VC4_SET_FIELD(fb->format->has_alpha ?
+-				      SCALER5_CTL2_ALPHA_MODE_PIPELINE :
+-				      SCALER5_CTL2_ALPHA_MODE_FIXED,
+-				      SCALER5_CTL2_ALPHA_MODE)
++					SCALER5_CTL2_ALPHA_MIX : 0)
+ 			       );
+ 
+ 		/* Position Word 1: Scaled Image Dimensions. */
+@@ -1493,6 +1525,10 @@ struct drm_plane *vc4_plane_init(struct
+ 	drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
+ 
+ 	drm_plane_create_alpha_property(plane);
++	drm_plane_create_blend_mode_property(plane,
++					     BIT(DRM_MODE_BLEND_PIXEL_NONE) |
++					     BIT(DRM_MODE_BLEND_PREMULTI) |
++					     BIT(DRM_MODE_BLEND_COVERAGE));
+ 	drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
+ 					   DRM_MODE_ROTATE_0 |
+ 					   DRM_MODE_ROTATE_180 |
diff --git a/target/linux/bcm27xx/patches-5.15/950-0651-arm-Fix-custom-rpi-__memset32-and-__memset64.patch b/target/linux/bcm27xx/patches-5.15/950-0651-arm-Fix-custom-rpi-__memset32-and-__memset64.patch
new file mode 100644
index 0000000000..d6d464272f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0651-arm-Fix-custom-rpi-__memset32-and-__memset64.patch
@@ -0,0 +1,57 @@
+From 43e769a2c40287d36c54438898a8b7d9358adba9 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 11 Jan 2022 10:48:30 +0000
+Subject: [PATCH] arm: Fix custom rpi __memset32 and __memset64
+
+See: https://github.com/raspberrypi/linux/issues/4798
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/lib/memset_rpi.S | 12 +++++++-----
+ 1 file changed, 7 insertions(+), 5 deletions(-)
+
+--- a/arch/arm/lib/memset_rpi.S
++++ b/arch/arm/lib/memset_rpi.S
+@@ -53,8 +53,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+ ENTRY(mmioset)
+ ENTRY(memset)
+ ENTRY(__memset)
+-ENTRY(__memset32)
+-ENTRY(__memset64)
+ 
+         S       .req    a1
+         DAT0    .req    a2
+@@ -64,10 +62,14 @@ ENTRY(__memset64)
+         DAT3    .req    lr
+ 
+         orr     DAT0, DAT0, DAT0, lsl #8
+-        push    {S, lr}
+         orr     DAT0, DAT0, DAT0, lsl #16
++
++ENTRY(__memset32)
+         mov     DAT1, DAT0
+ 
++ENTRY(__memset64)
++        push    {S, lr}
++
+         /* See if we're guaranteed to have at least one 16-byte aligned 16-byte write */
+         cmp     N, #31
+         blo     170f
+@@ -89,7 +91,7 @@ ENTRY(__memset64)
+         stmcsia S!, {DAT0, DAT1}
+ 164:    /* Delayed set up of DAT2 and DAT3 so we could use them as scratch registers above */
+         mov     DAT2, DAT0
+-        mov     DAT3, DAT0
++        mov     DAT3, DAT1
+         /* Now the inner loop of 16-byte stores */
+ 165:    stmia   S!, {DAT0, DAT1, DAT2, DAT3}
+         subs    N, N, #16
+@@ -105,7 +107,7 @@ ENTRY(__memset64)
+ 
+ 170:    /* Short case */
+         mov     DAT2, DAT0
+-        mov     DAT3, DAT0
++        mov     DAT3, DAT1
+         tst     S, #3
+         beq     174f
+ 172:    subs    N, N, #1
diff --git a/target/linux/bcm27xx/patches-5.15/950-0652-overlays-Add-vl805-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0652-overlays-Add-vl805-overlay.patch
new file mode 100644
index 0000000000..6ef1690da6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0652-overlays-Add-vl805-overlay.patch
@@ -0,0 +1,72 @@
+From 2f1c8eedc108d458fb2566ec582cbd7c45fc280b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 12 Jan 2022 12:48:53 +0000
+Subject: [PATCH] overlays: Add vl805 overlay
+
+With the automatic VL805 support being removed from the standard
+CM4 dtb (since most CM4 carriers don't have a VL805), retain support
+on those that do by creating a "vl805" overlay that restores the
+deleted "usb@0,0" node.
+
+The "vl805" overlay will be loaded automatically (after an upcoming
+firmware update) on CM4 boards where the EEPROM config includes the
+setting VL805=1.
+
+See: https://forums.raspberrypi.com/viewtopic.php?t=326088
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile          |  1 +
+ arch/arm/boot/dts/overlays/README            |  8 ++++++++
+ arch/arm/boot/dts/overlays/vl805-overlay.dts | 18 ++++++++++++++++++
+ 3 files changed, 27 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/vl805-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -243,6 +243,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	vc4-kms-v3d-pi4.dtbo \
+ 	vc4-kms-vga666.dtbo \
+ 	vga666.dtbo \
++	vl805.dtbo \
+ 	w1-gpio.dtbo \
+ 	w1-gpio-pullup.dtbo \
+ 	w5500.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3744,6 +3744,14 @@ Load:   dtoverlay=vga666
+ Params: <None>
+ 
+ 
++Name:   vl805
++Info:   Overlay to enable a VIA VL805 USB3 controller on CM4 carriers
++        Will be loaded automatically by up-to-date firmware if "VL805=1" is
++        set in the EEPROM config.
++Load:   dtoverlay=vl805
++Params: <None>
++
++
+ Name:   w1-gpio
+ Info:   Configures the w1-gpio Onewire interface module.
+         Use this overlay if you *don't* need a GPIO to drive an external pullup.
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vl805-overlay.dts
+@@ -0,0 +1,18 @@
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
++
++/ {
++	compatible = "brcm,bcm2711";
++
++	fragment@0 {
++		target-path = "pcie0/pci@0,0";
++		__overlay__ {
++			usb@0,0 {
++				reg = <0 0 0 0 0>;
++				resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
++			};
++		};
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0653-arm-Fix-annoying-.eh_frame-section-warnings.patch b/target/linux/bcm27xx/patches-5.15/950-0653-arm-Fix-annoying-.eh_frame-section-warnings.patch
new file mode 100644
index 0000000000..4a90eafc08
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0653-arm-Fix-annoying-.eh_frame-section-warnings.patch
@@ -0,0 +1,123 @@
+From 8dabc6eab444607a68d710f0b09942277095e219 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 12 Jan 2022 17:27:03 +0000
+Subject: [PATCH] arm: Fix annoying .eh_frame section warnings
+
+Replace the cfi directives with the UNWIND equivalents. This prevents
+the .eh_frame section from being created, eliminating the warnings.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/lib/memcpy_rpi.S  |  2 ++
+ arch/arm/lib/memcpymove.h  | 45 ++++++++++++--------------------------
+ arch/arm/lib/memmove_rpi.S |  2 ++
+ 3 files changed, 18 insertions(+), 31 deletions(-)
+
+--- a/arch/arm/lib/memcpy_rpi.S
++++ b/arch/arm/lib/memcpy_rpi.S
+@@ -27,6 +27,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+ */
+ 
+ #include <linux/linkage.h>
++#include <asm/assembler.h>
++#include <asm/unwind.h>
+ #include "arm-mem.h"
+ #include "memcpymove.h"
+ 
+--- a/arch/arm/lib/memcpymove.h
++++ b/arch/arm/lib/memcpymove.h
+@@ -280,6 +280,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+ 199:
+         pop     {DAT3, DAT4, DAT5, DAT6, DAT7}
+         pop     {D, DAT1, DAT2, pc}
++        UNWIND( .fnend )
+ .endm
+ 
+ .macro memcpy_medium_inner_loop  backwards, align
+@@ -358,19 +359,13 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+         LAST    .req    ip
+         OFF     .req    lr
+ 
+-        .cfi_startproc
++        UNWIND( .fnstart )
+ 
+         push    {D, DAT1, DAT2, lr}
++        UNWIND( .fnend )
+ 
+-        .cfi_def_cfa_offset 16
+-        .cfi_rel_offset D, 0
+-        .cfi_undefined  S
+-        .cfi_undefined  N
+-        .cfi_undefined  DAT0
+-        .cfi_rel_offset DAT1, 4
+-        .cfi_rel_offset DAT2, 8
+-        .cfi_undefined  LAST
+-        .cfi_rel_offset lr, 12
++        UNWIND( .fnstart )
++        UNWIND( .save {D, DAT1, DAT2, lr} )
+ 
+  .if backwards
+         add     D, D, N
+@@ -386,17 +381,11 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+ 
+         /* Long case */
+         push    {DAT3, DAT4, DAT5, DAT6, DAT7}
++        UNWIND( .fnend )
+ 
+-        .cfi_def_cfa_offset 36
+-        .cfi_rel_offset D, 20
+-        .cfi_rel_offset DAT1, 24
+-        .cfi_rel_offset DAT2, 28
+-        .cfi_rel_offset DAT3, 0
+-        .cfi_rel_offset DAT4, 4
+-        .cfi_rel_offset DAT5, 8
+-        .cfi_rel_offset DAT6, 12
+-        .cfi_rel_offset DAT7, 16
+-        .cfi_rel_offset lr, 32
++        UNWIND( .fnstart )
++        UNWIND( .save {D, DAT1, DAT2, lr} )
++        UNWIND( .save {DAT3, DAT4, DAT5, DAT6, DAT7} )
+ 
+         /* Adjust N so that the decrement instruction can also test for
+          * inner loop termination. We want it to stop when there are
+@@ -436,16 +425,10 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+ 156:    memcpy_long_inner_loop  backwards, 2
+ 157:    memcpy_long_inner_loop  backwards, 3
+ 
+-        .cfi_def_cfa_offset 16
+-        .cfi_rel_offset D, 0
+-        .cfi_rel_offset DAT1, 4
+-        .cfi_rel_offset DAT2, 8
+-        .cfi_same_value DAT3
+-        .cfi_same_value DAT4
+-        .cfi_same_value DAT5
+-        .cfi_same_value DAT6
+-        .cfi_same_value DAT7
+-        .cfi_rel_offset lr, 12
++        UNWIND( .fnend )
++
++        UNWIND( .fnstart )
++        UNWIND( .save {D, DAT1, DAT2, lr} )
+ 
+ 160:    /* Medium case */
+         preload_all  backwards, 0, 0, S, N, DAT2, OFF
+@@ -488,7 +471,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+         memcpy_short_inner_loop  backwards, 0
+ 140:    memcpy_short_inner_loop  backwards, 1
+ 
+-        .cfi_endproc
++        UNWIND( .fnend )
+ 
+         .unreq  D
+         .unreq  S
+--- a/arch/arm/lib/memmove_rpi.S
++++ b/arch/arm/lib/memmove_rpi.S
+@@ -27,6 +27,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+ */
+ 
+ #include <linux/linkage.h>
++#include <asm/assembler.h>
++#include <asm/unwind.h>
+ #include "arm-mem.h"
+ #include "memcpymove.h"
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0654-drm-vc4-Disable-Gamma-control-on-HVS5-due-to-issues-.patch b/target/linux/bcm27xx/patches-5.15/950-0654-drm-vc4-Disable-Gamma-control-on-HVS5-due-to-issues-.patch
new file mode 100644
index 0000000000..80edae5cf5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0654-drm-vc4-Disable-Gamma-control-on-HVS5-due-to-issues-.patch
@@ -0,0 +1,36 @@
+From 6c276e5d2c0ee362e4b860845401e095773fad7f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 13 Jan 2022 11:30:42 +0000
+Subject: [PATCH] drm/vc4: Disable Gamma control on HVS5 due to issues
+ writing the table
+
+Still under investigation, but the conditions under which the HVS
+will accept values written to the gamma PWL are not straightforward.
+
+Disable gamma on HVS5 again until it can be resolved to avoid
+gamma being enabled with an incorrect table.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 8 +-------
+ 1 file changed, 1 insertion(+), 7 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -1182,15 +1182,9 @@ int vc4_crtc_init(struct drm_device *drm
+ 
+ 	if (!vc4->hvs->hvs5) {
+ 		drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));
+-	} else {
+-		/* This is a lie for hvs5 which uses a 16 point PWL, but it
+-		 * allows for something smarter than just 16 linearly spaced
+-		 * segments. Conversion is done in vc5_hvs_update_gamma_lut.
+-		 */
+-		drm_mode_crtc_set_gamma_size(crtc, 256);
++		drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
+ 	}
+ 
+-	drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
+ 
+ 	if (!vc4->hvs->hvs5) {
+ 		/* We support CTM, but only for one CRTC at a time. It's therefore
diff --git a/target/linux/bcm27xx/patches-5.15/950-0655-drm-vc4-hdmi-Fix-clock-value-used-for-validating-hdm.patch b/target/linux/bcm27xx/patches-5.15/950-0655-drm-vc4-hdmi-Fix-clock-value-used-for-validating-hdm.patch
new file mode 100644
index 0000000000..988876077a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0655-drm-vc4-hdmi-Fix-clock-value-used-for-validating-hdm.patch
@@ -0,0 +1,29 @@
+From f285cba93ac9425078740d20456f34c94ad7511c Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 13 Jan 2022 15:47:23 +0000
+Subject: [PATCH] drm/vc4: hdmi: Fix clock value used for validating
+ hdmi modes
+
+We are using mode->crt_clock here which is filled by drm_mode_set_crtcinfo()
+which is called right after .mode_valid.
+
+Use mode->clock which is valid here.
+
+Fixes: 624d93a4f0 ("drm/vc4: hdmi: Move clock calculation into its own function")
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1495,7 +1495,7 @@ vc4_hdmi_encoder_compute_mode_clock(cons
+ 				    unsigned int bpc,
+ 				    enum vc4_hdmi_output_format fmt)
+ {
+-	unsigned long long clock = mode->crtc_clock * 1000;
++	unsigned long long clock = mode->clock * 1000;
+ 
+ 	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+ 		clock = clock * 2;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0656-ARM-dts-Remove-VL805-USB-node-from-CM4-dts.patch b/target/linux/bcm27xx/patches-5.15/950-0656-ARM-dts-Remove-VL805-USB-node-from-CM4-dts.patch
new file mode 100644
index 0000000000..e7fe76911e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0656-ARM-dts-Remove-VL805-USB-node-from-CM4-dts.patch
@@ -0,0 +1,32 @@
+From 98695baaffb88f7de0486fa1e039f8b3e47661d2 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 12 Jan 2022 14:39:46 +0000
+Subject: [PATCH] ARM: dts: Remove VL805 USB node from CM4 dts
+
+Neither the CM4 module nor the CM4IO board have a VL805 USB3
+controller. The existing "usb@0,0" node is a hangover from the
+Pi 4 dts; delete it. An up-to-date firmware will automatically load
+the vl805 overlay on CM4s with VL805=1 in the EEPROM config, ensuring
+that the firmware is notified of any PCIe reset.
+
+See: https://forums.raspberrypi.com/viewtopic.php?t=326088
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-cm4.dts | 5 -----
+ 1 file changed, 5 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+@@ -237,11 +237,6 @@
+ 		ranges;
+ 
+ 		reg = <0 0 0 0 0>;
+-
+-		usb@0,0 {
+-			reg = <0 0 0 0 0>;
+-			resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
+-		};
+ 	};
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0657-mfd-simple-mfd-i2c-Add-configuration-for-RPi-POE-HAT.patch b/target/linux/bcm27xx/patches-5.15/950-0657-mfd-simple-mfd-i2c-Add-configuration-for-RPi-POE-HAT.patch
new file mode 100644
index 0000000000..41ac28a673
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0657-mfd-simple-mfd-i2c-Add-configuration-for-RPi-POE-HAT.patch
@@ -0,0 +1,63 @@
+From 6a08616a30213fd40a17c38c63de4b9c9503a537 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 19 Jan 2022 17:22:57 +0000
+Subject: [PATCH] mfd: simple-mfd-i2c: Add configuration for RPi POE
+ HAT
+
+The Raspbery Pi PoE+ HAT exposes a fan controller and power
+supply status reporting via a single I2C address.
+
+Create an MFD device that allows loading of the relevant
+sub-drivers, with a shared I2C regmap.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/mfd/Kconfig          | 10 ++++++++++
+ drivers/mfd/simple-mfd-i2c.c | 10 ++++++++++
+ 2 files changed, 20 insertions(+)
+
+--- a/drivers/mfd/Kconfig
++++ b/drivers/mfd/Kconfig
+@@ -1093,6 +1093,16 @@ config MFD_SPMI_PMIC
+ 	  Say M here if you want to include support for the SPMI PMIC
+ 	  series as a module.  The module will be called "qcom-spmi-pmic".
+ 
++config MFD_RASPBERRYPI_POE_HAT
++	tristate "Raspberry Pi PoE HAT MFD"
++	depends on I2C
++	select MFD_SIMPLE_MFD_I2C
++	help
++	  This module supports the PWM fan controller found on the Raspberry Pi
++	  POE and POE+ HAT boards, and the power supply driver on the POE+ HAT.
++	  (Functionally it relies on MFD_SIMPLE_MFD_I2C to provide the framework
++	  that loads the child drivers).
++
+ config MFD_RDC321X
+ 	tristate "RDC R-321x southbridge"
+ 	select MFD_CORE
+--- a/drivers/mfd/simple-mfd-i2c.c
++++ b/drivers/mfd/simple-mfd-i2c.c
+@@ -29,6 +29,15 @@ static const struct regmap_config regmap
+ 	.val_bits = 8,
+ };
+ 
++static const struct regmap_config regmap_config_16r_8v = {
++	.reg_bits = 16,
++	.val_bits = 8,
++};
++
++static const struct simple_mfd_data rpi_poe_core = {
++	.regmap_config = &regmap_config_16r_8v,
++};
++
+ static int simple_mfd_i2c_probe(struct i2c_client *i2c)
+ {
+ 	const struct simple_mfd_data *simple_mfd_data;
+@@ -64,6 +73,7 @@ static int simple_mfd_i2c_probe(struct i
+ 
+ static const struct of_device_id simple_mfd_i2c_of_match[] = {
+ 	{ .compatible = "kontron,sl28cpld" },
++	{ .compatible = "raspberrypi,poe-core", &rpi_poe_core },
+ 	{}
+ };
+ MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0658-pwm-raspberrypi-poe-Add-option-of-being-created-by-M.patch b/target/linux/bcm27xx/patches-5.15/950-0658-pwm-raspberrypi-poe-Add-option-of-being-created-by-M.patch
new file mode 100644
index 0000000000..2eb971f891
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0658-pwm-raspberrypi-poe-Add-option-of-being-created-by-M.patch
@@ -0,0 +1,171 @@
+From fd864dfdcaa04271c09767bba5d77247b0899a6e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 19 Jan 2022 17:26:22 +0000
+Subject: [PATCH] pwm: raspberrypi-poe: Add option of being created by
+ MFD or FW
+
+The firmware can only use I2C0 if the kernel isn't, therefore
+with libcamera and DRM using it the PoE HAT fan control needs
+to move to the kernel.
+
+Add the option for the driver to be created by the PoE HAT core
+MFD driver, and use the I2C regmap that provides to control fan
+functions.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/pwm/pwm-raspberrypi-poe.c | 81 ++++++++++++++++++-------------
+ 1 file changed, 48 insertions(+), 33 deletions(-)
+
+--- a/drivers/pwm/pwm-raspberrypi-poe.c
++++ b/drivers/pwm/pwm-raspberrypi-poe.c
+@@ -16,6 +16,7 @@
+ #include <linux/of.h>
+ #include <linux/platform_device.h>
+ #include <linux/pwm.h>
++#include <linux/regmap.h>
+ 
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ #include <dt-bindings/pwm/raspberrypi,firmware-poe-pwm.h>
+@@ -27,6 +28,10 @@
+ 
+ struct raspberrypi_pwm {
+ 	struct rpi_firmware *firmware;
++
++	struct regmap *regmap;
++	u32 offset;
++
+ 	struct pwm_chip chip;
+ 	unsigned int duty_cycle;
+ };
+@@ -43,7 +48,7 @@ struct raspberrypi_pwm *raspberrypi_pwm_
+ 	return container_of(chip, struct raspberrypi_pwm, chip);
+ }
+ 
+-static int raspberrypi_pwm_set_property(struct rpi_firmware *firmware,
++static int raspberrypi_pwm_set_property(struct raspberrypi_pwm *pwm,
+ 					u32 reg, u32 val)
+ {
+ 	struct raspberrypi_pwm_prop msg = {
+@@ -52,17 +57,19 @@ static int raspberrypi_pwm_set_property(
+ 	};
+ 	int ret;
+ 
+-	ret = rpi_firmware_property(firmware, RPI_FIRMWARE_SET_POE_HAT_VAL,
+-				    &msg, sizeof(msg));
+-	if (ret)
+-		return ret;
+-	if (msg.ret)
+-		return -EIO;
++	if (pwm->firmware) {
++		ret = rpi_firmware_property(pwm->firmware, RPI_FIRMWARE_SET_POE_HAT_VAL,
++					    &msg, sizeof(msg));
++		if (!ret && msg.ret)
++			ret = -EIO;
++	} else {
++		ret = regmap_write(pwm->regmap, pwm->offset + reg, val);
++	}
+ 
+-	return 0;
++	return ret;
+ }
+ 
+-static int raspberrypi_pwm_get_property(struct rpi_firmware *firmware,
++static int raspberrypi_pwm_get_property(struct raspberrypi_pwm *pwm,
+ 					u32 reg, u32 *val)
+ {
+ 	struct raspberrypi_pwm_prop msg = {
+@@ -70,16 +77,17 @@ static int raspberrypi_pwm_get_property(
+ 	};
+ 	int ret;
+ 
+-	ret = rpi_firmware_property(firmware, RPI_FIRMWARE_GET_POE_HAT_VAL,
+-				    &msg, sizeof(msg));
+-	if (ret)
+-		return ret;
+-	if (msg.ret)
+-		return -EIO;
+-
+-	*val = le32_to_cpu(msg.val);
++	if (pwm->firmware) {
++		ret = rpi_firmware_property(pwm->firmware, RPI_FIRMWARE_GET_POE_HAT_VAL,
++					    &msg, sizeof(msg));
++		if (!ret && msg.ret)
++			ret = -EIO;
++		*val = le32_to_cpu(msg.val);
++	} else {
++		ret = regmap_read(pwm->regmap, pwm->offset + reg, val);
++	}
+ 
+-	return 0;
++	return ret;
+ }
+ 
+ static void raspberrypi_pwm_get_state(struct pwm_chip *chip,
+@@ -117,7 +125,7 @@ static int raspberrypi_pwm_apply(struct
+ 	if (duty_cycle == rpipwm->duty_cycle)
+ 		return 0;
+ 
+-	ret = raspberrypi_pwm_set_property(rpipwm->firmware, RPI_PWM_CUR_DUTY_REG,
++	ret = raspberrypi_pwm_set_property(rpipwm, RPI_PWM_CUR_DUTY_REG,
+ 					   duty_cycle);
+ 	if (ret) {
+ 		dev_err(chip->dev, "Failed to set duty cycle: %pe\n",
+@@ -144,29 +152,35 @@ static int raspberrypi_pwm_probe(struct
+ 	struct raspberrypi_pwm *rpipwm;
+ 	int ret;
+ 
+-	firmware_node = of_get_parent(dev->of_node);
+-	if (!firmware_node) {
+-		dev_err(dev, "Missing firmware node\n");
+-		return -ENOENT;
+-	}
+-
+-	firmware = devm_rpi_firmware_get(&pdev->dev, firmware_node);
+-	of_node_put(firmware_node);
+-	if (!firmware)
+-		return dev_err_probe(dev, -EPROBE_DEFER,
+-				     "Failed to get firmware handle\n");
+-
+ 	rpipwm = devm_kzalloc(&pdev->dev, sizeof(*rpipwm), GFP_KERNEL);
+ 	if (!rpipwm)
+ 		return -ENOMEM;
+ 
+-	rpipwm->firmware = firmware;
++	if (pdev->dev.parent)
++		rpipwm->regmap = dev_get_regmap(pdev->dev.parent, NULL);
++
++	if (rpipwm->regmap) {
++		ret = device_property_read_u32(&pdev->dev, "reg", &rpipwm->offset);
++		if (ret)
++			return -EINVAL;
++	} else {
++		firmware_node = of_get_parent(dev->of_node);
++
++		firmware = devm_rpi_firmware_get(&pdev->dev, firmware_node);
++		of_node_put(firmware_node);
++		if (!firmware)
++			return dev_err_probe(dev, -EPROBE_DEFER,
++					     "Failed to get firmware handle\n");
++
++		rpipwm->firmware = firmware;
++	}
++
+ 	rpipwm->chip.dev = dev;
+ 	rpipwm->chip.ops = &raspberrypi_pwm_ops;
+ 	rpipwm->chip.base = -1;
+ 	rpipwm->chip.npwm = RASPBERRYPI_FIRMWARE_PWM_NUM;
+ 
+-	ret = raspberrypi_pwm_get_property(rpipwm->firmware, RPI_PWM_CUR_DUTY_REG,
++	ret = raspberrypi_pwm_get_property(rpipwm, RPI_PWM_CUR_DUTY_REG,
+ 					   &rpipwm->duty_cycle);
+ 	if (ret) {
+ 		dev_err(dev, "Failed to get duty cycle: %pe\n", ERR_PTR(ret));
+@@ -178,6 +192,7 @@ static int raspberrypi_pwm_probe(struct
+ 
+ static const struct of_device_id raspberrypi_pwm_of_match[] = {
+ 	{ .compatible = "raspberrypi,firmware-poe-pwm", },
++	{ .compatible = "raspberrypi,poe-pwm", },
+ 	{ }
+ };
+ MODULE_DEVICE_TABLE(of, raspberrypi_pwm_of_match);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0659-power-rpi-poe-Drop-CURRENT_AVG-as-it-is-not-hardware.patch b/target/linux/bcm27xx/patches-5.15/950-0659-power-rpi-poe-Drop-CURRENT_AVG-as-it-is-not-hardware.patch
new file mode 100644
index 0000000000..d324323075
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0659-power-rpi-poe-Drop-CURRENT_AVG-as-it-is-not-hardware.patch
@@ -0,0 +1,43 @@
+From dd73451d7f93925a0aca446c5fef68c543658637 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 20 Jan 2022 15:48:03 +0000
+Subject: [PATCH] power: rpi-poe: Drop CURRENT_AVG as it is not
+ hardware averaged
+
+As documented the _AVG parameters are meant to be hardware
+averaged, but the implementation for the PoE+ HAT was done in
+software in the firmware.
+
+Drop the property.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/power/supply/rpi_poe_power.c | 10 ----------
+ 1 file changed, 10 deletions(-)
+
+--- a/drivers/power/supply/rpi_poe_power.c
++++ b/drivers/power/supply/rpi_poe_power.c
+@@ -106,15 +106,6 @@ static int rpi_poe_power_supply_get_prop
+ 		r_val->intval = (val > 5);
+ 		return 0;
+ 
+-	case POWER_SUPPLY_PROP_CURRENT_AVG:
+-		val = 50;
+-		ret = read_reg(ctx->fw, RPI_POE_ADC_REG, &val);
+-		if (ret)
+-			return ret;
+-		val = (val * 3300)/9821;
+-		r_val->intval = val * 1000;
+-		return 0;
+-
+ 	case POWER_SUPPLY_PROP_CURRENT_NOW:
+ 		ret = read_reg(ctx->fw, RPI_POE_ADC_REG, &val);
+ 		if (ret)
+@@ -145,7 +136,6 @@ static int rpi_poe_power_supply_get_prop
+ static enum power_supply_property rpi_poe_power_supply_properties[] = {
+ 	POWER_SUPPLY_PROP_HEALTH,
+ 	POWER_SUPPLY_PROP_ONLINE,
+-	POWER_SUPPLY_PROP_CURRENT_AVG,
+ 	POWER_SUPPLY_PROP_CURRENT_NOW,
+ 	POWER_SUPPLY_PROP_CURRENT_MAX,
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0660-power-rpi-poe-Add-option-of-being-created-by-MFD-or-.patch b/target/linux/bcm27xx/patches-5.15/950-0660-power-rpi-poe-Add-option-of-being-created-by-MFD-or-.patch
new file mode 100644
index 0000000000..e402f0d639
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0660-power-rpi-poe-Add-option-of-being-created-by-MFD-or-.patch
@@ -0,0 +1,234 @@
+From 2b9f5f00b22766743607b70d361875a9a1b0e1ed Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 20 Jan 2022 15:50:27 +0000
+Subject: [PATCH] power: rpi-poe: Add option of being created by MFD or
+ FW
+
+The firmware can only use I2C0 if the kernel isn't, therefore
+with libcamera and DRM using it the PoE HAT fan control needs
+to move to the kernel.
+
+Add the option for the driver to be created by the PoE HAT core
+MFD driver, and use the I2C regmap that provides to control fan
+functions.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/power/supply/rpi_poe_power.c | 124 ++++++++++++++++-----------
+ 1 file changed, 75 insertions(+), 49 deletions(-)
+
+--- a/drivers/power/supply/rpi_poe_power.c
++++ b/drivers/power/supply/rpi_poe_power.c
+@@ -12,10 +12,13 @@
+ #include <linux/of.h>
+ #include <linux/platform_device.h>
+ #include <linux/power_supply.h>
++#include <linux/regmap.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+-#define RPI_POE_ADC_REG			0x2
+-#define RPI_POE_FLAG_REG		0x4
++#define RPI_POE_FW_BASE_REG		0x2
++
++#define RPI_POE_ADC_REG			0x0
++#define RPI_POE_FLAG_REG		0x2
+ 
+ #define RPI_POE_FLAG_AT			BIT(0)
+ #define RPI_POE_FLAG_OC			BIT(1)
+@@ -26,8 +29,12 @@
+ #define DRVNAME "rpi-poe-power-supply"
+ 
+ struct rpi_poe_power_supply_ctx {
+-	struct power_supply *supply;
+ 	struct rpi_firmware *fw;
++
++	struct regmap *regmap;
++	u32 offset;
++
++	struct power_supply *supply;
+ };
+ 
+ struct fw_tag_data_s {
+@@ -36,40 +43,51 @@ struct fw_tag_data_s {
+ 	u32 ret;
+ };
+ 
+-static int write_reg(struct rpi_firmware *fw, u32 reg, u32 *val)
++static int write_reg(struct rpi_poe_power_supply_ctx *ctx, u32 reg, u32 *val)
+ {
+ 	struct fw_tag_data_s fw_tag_data = {
+-		.reg = reg,
++		.reg = reg + RPI_POE_FW_BASE_REG,
+ 		.val = *val
+ 	};
+ 	int ret;
+ 
+-	ret = rpi_firmware_property(fw, RPI_FIRMWARE_SET_POE_HAT_VAL,
+-				    &fw_tag_data, sizeof(fw_tag_data));
+-	if (ret)
+-		return ret;
+-	else if (fw_tag_data.ret)
+-		return -EIO;
+-	return 0;
++	if (ctx->fw) {
++		ret = rpi_firmware_property(ctx->fw, RPI_FIRMWARE_SET_POE_HAT_VAL,
++					    &fw_tag_data, sizeof(fw_tag_data));
++		if (!ret && fw_tag_data.ret)
++			ret = -EIO;
++	} else {
++		ret = regmap_write(ctx->regmap, ctx->offset + reg, *val);
++	}
++
++	return ret;
+ }
+ 
+-static int read_reg(struct rpi_firmware *fw, u32 reg, u32 *val)
++static int read_reg(struct rpi_poe_power_supply_ctx *ctx, u32 reg, u32 *val)
+ {
+ 	struct fw_tag_data_s fw_tag_data = {
+-		.reg = reg,
++		.reg = reg + RPI_POE_FW_BASE_REG,
+ 		.val = *val
+ 	};
++	u32 value;
+ 	int ret;
+ 
+-	ret = rpi_firmware_property(fw, RPI_FIRMWARE_GET_POE_HAT_VAL,
+-				    &fw_tag_data, sizeof(fw_tag_data));
+-	if (ret)
+-		return ret;
+-	else if (fw_tag_data.ret)
+-		return -EIO;
++	if (ctx->fw) {
++		ret = rpi_firmware_property(ctx->fw, RPI_FIRMWARE_GET_POE_HAT_VAL,
++					    &fw_tag_data, sizeof(fw_tag_data));
++		if (!ret && fw_tag_data.ret)
++			ret = -EIO;
++		*val = fw_tag_data.val;
++	} else {
++		ret = regmap_read(ctx->regmap, ctx->offset + reg, &value);
++		if (!ret) {
++			*val = value;
++			ret = regmap_read(ctx->regmap, ctx->offset + reg + 1, &value);
++			*val |= value << 8;
++		}
++	}
+ 
+-	*val = fw_tag_data.val;
+-	return 0;
++	return ret;
+ }
+ 
+ static int rpi_poe_power_supply_get_property(struct power_supply *psy,
+@@ -82,14 +100,14 @@ static int rpi_poe_power_supply_get_prop
+ 
+ 	switch (psp) {
+ 	case POWER_SUPPLY_PROP_HEALTH:
+-		ret = read_reg(ctx->fw, RPI_POE_FLAG_REG, &val);
++		ret = read_reg(ctx, RPI_POE_FLAG_REG, &val);
+ 		if (ret)
+ 			return ret;
+ 
+ 		if (val & RPI_POE_FLAG_OC) {
+ 			r_val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ 			val = RPI_POE_FLAG_OC;
+-			ret = write_reg(ctx->fw, RPI_POE_FLAG_REG, &val);
++			ret = write_reg(ctx, RPI_POE_FLAG_REG, &val);
+ 			if (ret)
+ 				return ret;
+ 			return 0;
+@@ -99,7 +117,7 @@ static int rpi_poe_power_supply_get_prop
+ 		return 0;
+ 
+ 	case POWER_SUPPLY_PROP_ONLINE:
+-		ret = read_reg(ctx->fw, RPI_POE_ADC_REG, &val);
++		ret = read_reg(ctx, RPI_POE_ADC_REG, &val);
+ 		if (ret)
+ 			return ret;
+ 
+@@ -107,7 +125,7 @@ static int rpi_poe_power_supply_get_prop
+ 		return 0;
+ 
+ 	case POWER_SUPPLY_PROP_CURRENT_NOW:
+-		ret = read_reg(ctx->fw, RPI_POE_ADC_REG, &val);
++		ret = read_reg(ctx, RPI_POE_ADC_REG, &val);
+ 		if (ret)
+ 			return ret;
+ 		val = (val * 3300)/9821;
+@@ -115,15 +133,14 @@ static int rpi_poe_power_supply_get_prop
+ 		return 0;
+ 
+ 	case POWER_SUPPLY_PROP_CURRENT_MAX:
+-		ret = read_reg(ctx->fw, RPI_POE_FLAG_REG, &val);
++		ret = read_reg(ctx, RPI_POE_FLAG_REG, &val);
+ 		if (ret)
+ 			return ret;
+ 
+-		if (val & RPI_POE_FLAG_AT) {
++		if (val & RPI_POE_FLAG_AT)
+ 			r_val->intval = RPI_POE_CURRENT_AT_MAX;
+-			return 0;
+-		}
+-		r_val->intval = RPI_POE_CURRENT_AF_MAX;
++		else
++			r_val->intval = RPI_POE_CURRENT_AF_MAX;
+ 		return 0;
+ 
+ 	default:
+@@ -158,29 +175,38 @@ static int rpi_poe_power_supply_probe(st
+ 	if (!of_device_is_available(pdev->dev.of_node))
+ 		return -ENODEV;
+ 
+-	fw_node = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
+-	if (!fw_node) {
+-		dev_err(&pdev->dev, "Missing firmware node\n");
+-		return -ENOENT;
+-	}
+-
+ 	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
+ 	if (!ctx)
+ 		return -ENOMEM;
+ 
+-	ctx->fw = rpi_firmware_get(fw_node);
+-	if (!ctx->fw)
+-		return -EPROBE_DEFER;
+-	if (rpi_firmware_property(ctx->fw,
+-			RPI_FIRMWARE_GET_FIRMWARE_REVISION,
+-			&revision, sizeof(revision))) {
+-		dev_err(&pdev->dev, "Failed to get firmware revision\n");
+-		return -ENOENT;
+-	}
+-	if (revision < 0x60af72e8) {
+-		dev_err(&pdev->dev, "Unsupported firmware\n");
+-		return -ENOENT;
++	if (pdev->dev.parent)
++		ctx->regmap = dev_get_regmap(pdev->dev.parent, NULL);
++
++	if (ctx->regmap) {
++		if (device_property_read_u32(&pdev->dev, "reg", &ctx->offset))
++			return -EINVAL;
++	} else {
++		fw_node = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
++		if (!fw_node) {
++			dev_err(&pdev->dev, "Missing firmware node\n");
++			return -ENOENT;
++		}
++
++		ctx->fw = rpi_firmware_get(fw_node);
++		if (!ctx->fw)
++			return -EPROBE_DEFER;
++		if (rpi_firmware_property(ctx->fw,
++					  RPI_FIRMWARE_GET_FIRMWARE_REVISION,
++					  &revision, sizeof(revision))) {
++			dev_err(&pdev->dev, "Failed to get firmware revision\n");
++			return -ENOENT;
++		}
++		if (revision < 0x60af72e8) {
++			dev_err(&pdev->dev, "Unsupported firmware\n");
++			return -ENOENT;
++		}
+ 	}
++
+ 	platform_set_drvdata(pdev, ctx);
+ 
+ 	psy_cfg.of_node = pdev->dev.of_node;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch b/target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch
new file mode 100644
index 0000000000..8a8a35bb34
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch
@@ -0,0 +1,158 @@
+From 7d4346817f31105ed07dd4e3e9fd2294c85a5fee Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 19 Jan 2022 17:29:13 +0000
+Subject: [PATCH] dtoverlays: Add option for PoE HAT to use Linux I2C
+ instead of FW.
+
+Adds parameter "i2c" to use the PoE HAT I2C MFD driver to instantiate
+the PoE HAT drivers, instead of being off the firmware.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             |  4 ++
+ .../arm/boot/dts/overlays/rpi-poe-overlay.dts | 62 +++++++++++++++----
+ .../dts/overlays/rpi-poe-plus-overlay.dts     | 15 +++++
+ 3 files changed, 69 insertions(+), 12 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2858,6 +2858,8 @@ Params: poe_fan_temp0           Temperat
+                                 speeds up (default 55000)
+         poe_fan_temp3_hyst      Temperature delta (in millicelcius) at which
+                                 the fan slows down (default 5000)
++        i2c                     Control the fan via Linux I2C drivers instead of
++                                the firmware.
+ 
+ 
+ Name:   rpi-poe-plus
+@@ -2879,6 +2881,8 @@ Params: poe_fan_temp0           Temperat
+                                 speeds up (default 55000)
+         poe_fan_temp3_hyst      Temperature delta (in millicelcius) at which
+                                 the fan slows down (default 5000)
++        i2c                     Control the fan via Linux I2C drivers instead of
++                                the firmware.
+ 
+ 
+ Name:   rpi-proto
+--- a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
+@@ -8,16 +8,6 @@
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target = <&firmware>;
+-		__overlay__ {
+-			fwpwm: pwm {
+-				compatible = "raspberrypi,firmware-poe-pwm";
+-				#pwm-cells = <2>;
+-			};
+-		};
+-	};
+-
+-	fragment@1 {
+ 		target-path = "/";
+ 		__overlay__ {
+ 			fan: pwm-fan {
+@@ -29,7 +19,7 @@
+ 		};
+ 	};
+ 
+-	fragment@2 {
++	fragment@1 {
+ 		target = <&cpu_thermal>;
+ 		__overlay__ {
+ 			trips {
+@@ -75,7 +65,7 @@
+ 		};
+ 	};
+ 
+-	fragment@3 {
++	fragment@2 {
+ 		target-path = "/__overrides__";
+ 		__overlay__ {
+ 			poe_fan_temp0 =		<&trip0>,"temperature:0";
+@@ -89,6 +79,52 @@
+ 		};
+ 	};
+ 
++	fragment@3 {
++		target = <&firmware>;
++		__overlay__ {
++			fwpwm: pwm {
++				compatible = "raspberrypi,firmware-poe-pwm";
++				#pwm-cells = <2>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			poe_mfd: poe@51 {
++				compatible = "raspberrypi,poe-core";
++				reg = <0x51>;
++				status = "okay";
++
++				poe_mfd_pwm: poe_pwm@f0 {
++					compatible = "raspberrypi,poe-pwm";
++					reg = <0xf0>;
++					status = "okay";
++					#pwm-cells = <2>;
++				};
++			};
++		};
++	};
++
++	fragment@5 {
++		target = <&i2c0if>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	fragment@6 {
++		target = <&i2c0mux>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
+ 	__overrides__ {
+ 		poe_fan_temp0 =		<&trip0>,"temperature:0";
+ 		poe_fan_temp0_hyst =	<&trip0>,"hysteresis:0";
+@@ -98,5 +134,7 @@
+ 		poe_fan_temp2_hyst =	<&trip2>,"hysteresis:0";
+ 		poe_fan_temp3 =		<&trip3>,"temperature:0";
+ 		poe_fan_temp3_hyst =	<&trip3>,"hysteresis:0";
++		i2c =			<0>, "-3+4+5+6",
++					<&fan>,"pwms:0=",<&poe_mfd_pwm>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts
+@@ -16,6 +16,21 @@
+ 			};
+ 		};
+ 	};
++	fragment@11 {
++		target = <&poe_mfd>;
++		__dormant__ {
++			rpi-poe-power-supply@f2 {
++				compatible = "raspberrypi,rpi-poe-power-supply";
++				reg = <0xf2>;
++				status = "okay";
++			};
++		};
++	};
++
++	__overrides__ {
++		i2c =	<0>, "-3+4+5+6-10+11",
++			<&fan>,"pwms:0=",<&poe_mfd_pwm>;
++	};
+ };
+ 
+ &fan {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0662-drivers-bcm2835_unicam-Disable-trigger-mode-operatio.patch b/target/linux/bcm27xx/patches-5.15/950-0662-drivers-bcm2835_unicam-Disable-trigger-mode-operatio.patch
new file mode 100644
index 0000000000..d10a41d3e6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0662-drivers-bcm2835_unicam-Disable-trigger-mode-operatio.patch
@@ -0,0 +1,57 @@
+From 70198f4ed03a3df670d5e12ab78bb3c4c2520396 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 18 Jan 2022 13:13:14 +0000
+Subject: [PATCH] drivers: bcm2835_unicam: Disable trigger mode
+ operation
+
+On a Pi3 B/B+ platform the imx219 sensor frequently generates a single corrupt
+frame when the sensor first starts. This can either be a missing line, or
+invalid samples within the line. This only occurrs using the Unicam kernel
+driver.
+
+Disabling trigger mode elimiates this corruption. Since trigger mode is a
+legacy feature copied from the firmware driver and not expected to be needed,
+remove it. Tested on the Raspberry Pi cameras and shows no ill effects.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 14 +-------------
+ 1 file changed, 1 insertion(+), 13 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -984,11 +984,6 @@ static irqreturn_t unicam_isr(int irq, v
+ 		}
+ 	}
+ 
+-	if (reg_read(unicam, UNICAM_ICTL) & UNICAM_FCM) {
+-		/* Switch out of trigger mode if selected */
+-		reg_write_field(unicam, UNICAM_ICTL, 1, UNICAM_TFC);
+-		reg_write_field(unicam, UNICAM_ICTL, 0, UNICAM_FCM);
+-	}
+ 	return IRQ_HANDLED;
+ }
+ 
+@@ -2298,8 +2293,7 @@ static void unicam_start_rx(struct unica
+ 
+ 	reg_write_field(dev, UNICAM_ANA, 0, UNICAM_DDL);
+ 
+-	/* Always start in trigger frame capture mode (UNICAM_FCM set) */
+-	val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM | UNICAM_IBOB;
++	val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_IBOB;
+ 	set_field(&val, line_int_freq, UNICAM_LCIE_MASK);
+ 	reg_write(dev, UNICAM_ICTL, val);
+ 	reg_write(dev, UNICAM_STA, UNICAM_STA_MASK_ALL);
+@@ -2412,12 +2406,6 @@ static void unicam_start_rx(struct unica
+ 	/* Load embedded data buffer pointers if needed */
+ 	if (dev->node[METADATA_PAD].streaming && dev->sensor_embedded_data)
+ 		reg_write_field(dev, UNICAM_DCS, 1, UNICAM_LDP);
+-
+-	/*
+-	 * Enable trigger only for the first frame to
+-	 * sync correctly to the FS from the source.
+-	 */
+-	reg_write_field(dev, UNICAM_ICTL, 1, UNICAM_TFC);
+ }
+ 
+ static void unicam_disable(struct unicam_device *dev)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0663-arm-Remove-spurious-.fnend-directive.patch b/target/linux/bcm27xx/patches-5.15/950-0663-arm-Remove-spurious-.fnend-directive.patch
new file mode 100644
index 0000000000..264a3903d3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0663-arm-Remove-spurious-.fnend-directive.patch
@@ -0,0 +1,27 @@
+From 98d86729da341c82f4776145511d01e8bfdfed29 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 21 Jan 2022 08:49:13 +0000
+Subject: [PATCH] arm: Remove spurious .fnend directive
+
+...a.k.a. Fix annoying build error
+
+Some toolchains rightly object to the fact that once the acros are
+expanded this results in multiple ".fnend"s without ".fnstart"s.
+
+See: https://github.com/raspberrypi/linux/issues/4836
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/lib/memcpymove.h | 1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/arch/arm/lib/memcpymove.h
++++ b/arch/arm/lib/memcpymove.h
+@@ -280,7 +280,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBI
+ 199:
+         pop     {DAT3, DAT4, DAT5, DAT6, DAT7}
+         pop     {D, DAT1, DAT2, pc}
+-        UNWIND( .fnend )
+ .endm
+ 
+ .macro memcpy_medium_inner_loop  backwards, align
diff --git a/target/linux/bcm27xx/patches-5.15/950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch b/target/linux/bcm27xx/patches-5.15/950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch
new file mode 100644
index 0000000000..848a1d2e05
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch
@@ -0,0 +1,26 @@
+From 916c79dc5a1df708d6984f5e964eaa3de7e130f2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 22 Oct 2021 16:48:50 +0100
+Subject: [PATCH] drm/vc4: dsi: Correct max divider to 255 (not 7)
+
+The integer divider from parent PLL to DSI clock is capable
+of going up to /255, not just /7 that the driver was trying.
+This allows for slower link frequencies on the DSI bus where
+the resolution permits.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -850,7 +850,7 @@ static bool vc4_dsi_encoder_mode_fixup(s
+ 	/* Find what divider gets us a faster clock than the requested
+ 	 * pixel clock.
+ 	 */
+-	for (divider = 1; divider < 7; divider++) {
++	for (divider = 1; divider < 255; divider++) {
+ 		if (parent_rate / (divider + 1) < pll_clock)
+ 			break;
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0665-dtoverlays-Add-pwm-backlight-option-to-vc4-kms-dpi-g.patch b/target/linux/bcm27xx/patches-5.15/950-0665-dtoverlays-Add-pwm-backlight-option-to-vc4-kms-dpi-g.patch
new file mode 100644
index 0000000000..5b0243472c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0665-dtoverlays-Add-pwm-backlight-option-to-vc4-kms-dpi-g.patch
@@ -0,0 +1,107 @@
+From 7ec32023e6ad31c242e2acc179fd35084fa9cea5 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 21 Jan 2022 14:22:01 +0000
+Subject: [PATCH] dtoverlays: Add pwm backlight option to
+ vc4-kms-dpi-generic
+
+Adds the option of a PWM controlled backlight on a generic
+DPI display.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             | 17 +++++++
+ .../overlays/vc4-kms-dpi-generic-overlay.dts  | 51 +++++++++++++++++++
+ 2 files changed, 68 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3644,6 +3644,23 @@ Params: clock-frequency         Display
+                                 value. NB also overridden by rgbXXX overrides.
+         backlight-gpio          Defines a GPIO to be used for backlight control
+                                 (default of none).
++        backlight-pwm           Defines a PWM channel to be used for backlight
++                                control (default of none). NB Disables audio
++                                headphone output as that also uses PWM.
++        backlight-pwm-chan      Choose channel on &pwm node for backlight
++                                control.
++                                (default 0).
++        backlight-pwm-gpio      GPIO pin to be used for the PWM backlight. See
++                                pwm-2chan for valid options.
++                                (default 18 - note this can only work with
++                                 rgb666-padhi).
++        backlight-pwm-func      Pin function of GPIO used for the PWM
++                                backlight.
++                                See pwm-2chan for valid options.
++                                (default 2).
++        backlight-def-brightness
++                                Set the default brightness. Normal range 1-16.
++                                (default 16).
+ 
+ 
+ Name:   vc4-kms-dsi-7inch
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -80,6 +80,52 @@
+ 		};
+ 	};
+ 
++	fragment@4 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight_pwm>;
++		};
++	};
++
++	fragment@5 {
++		target-path = "/";
++		__dormant__  {
++			backlight_pwm: backlight_pwm {
++				compatible = "pwm-backlight";
++				brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
++				default-brightness-level = <16>;
++				pwms = <&pwm 0 200000>;
++			};
++		};
++	};
++
++	fragment@6 {
++		target = <&pwm>;
++		__dormant__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pwm_pins>;
++			assigned-clock-rates = <1000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@7 {
++		target = <&gpio>;
++		__dormant__ {
++			pwm_pins: pwm_pins {
++				brcm,pins = <18>;
++				brcm,function = <2>; /* Alt5 */
++			};
++		};
++	};
++
++	fragment@8 {
++		target = <&audio>;
++		__dormant__  {
++		    brcm,disable-headphones;
++		};
++	};
++
+ 	__overrides__ {
+ 		clock-frequency = <&timing>, "clock-frequency:0";
+ 		hactive = <&timing>, "hactive:0";
+@@ -107,5 +153,10 @@
+ 		bus-format = <&panel>, "bus-format:0";
+ 		backlight-gpio = <0>, "+2+3",
+ 			<&backlight>, "gpios:4";
++		backlight-pwm = <0>, "+4+5+6+7+8";
++		backlight-pwm-chan = <&backlight_pwm>, "pwms:4";
++		backlight-pwm-gpio = <&pwm_pins>, "brcm,pins:0";
++		backlight-pwm-func = <&pwm_pins>, "brcm,function:0";
++		backlight-def-brightness = <&backlight_pwm>, "default-brightness-level:0";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0666-dtoverlays-Correct-h-v-sync_invert-config-in-vc4-kms.patch b/target/linux/bcm27xx/patches-5.15/950-0666-dtoverlays-Correct-h-v-sync_invert-config-in-vc4-kms.patch
new file mode 100644
index 0000000000..274e1f5f8e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0666-dtoverlays-Correct-h-v-sync_invert-config-in-vc4-kms.patch
@@ -0,0 +1,38 @@
+From b02995d0900af96c54acbb1e884b25f9399e9afb Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 21 Jan 2022 15:12:25 +0000
+Subject: [PATCH]sync_invert config in
+ vc4-kms-dpi-generic
+
+Both the base node and override set these parameters to 0,
+so it made no difference. The base node should have been 1.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -1,5 +1,5 @@
+ /*
+- * vc4-kms-dpi-at056tn53v1-overlay.dts
++ * vc4-kms-dpi-generic-overlay.dts
+  */
+ 
+ /dts-v1/;
+@@ -27,12 +27,12 @@
+ 					hfront-porch = <24>;
+ 					hsync-len = <72>;
+ 					hback-porch = <96>;
+-					hsync-active = <0>;
++					hsync-active = <1>;
+ 					vactive = <480>;
+ 					vfront-porch = <3>;
+ 					vsync-len = <10>;
+ 					vback-porch = <7>;
+-					vsync-active = <0>;
++					vsync-active = <1>;
+ 
+ 					de-active = <1>;
+ 					pixelclk-active = <1>;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0667-ARM-dts-BCM2711-AON_INTR2-generates-IRQ-edges.patch b/target/linux/bcm27xx/patches-5.15/950-0667-ARM-dts-BCM2711-AON_INTR2-generates-IRQ-edges.patch
new file mode 100644
index 0000000000..8e9d8212bc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0667-ARM-dts-BCM2711-AON_INTR2-generates-IRQ-edges.patch
@@ -0,0 +1,39 @@
+From 3050e07453791b8dfecf355a03cee075ec687a55 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 21 Jan 2022 12:24:57 +0000
+Subject: [PATCH] ARM: dts: BCM2711 AON_INTR2 generates IRQ edges
+
+THe AON_INTR2 controller manages the HDMI interrupts, combining them
+into a single interrupt passed to the GIC. bcm2711.dtsi declares the
+interrupt as being IRQ_TYPE_LEVEL_HIGH, but it should be
+IRQ_TYPE_EDGE_RISING. Most of the time the distinction shouldn't
+matter, but there is a small possibility of losing interrupts unless
+it is corrected.
+
+See: http://lists.infradead.org/pipermail/linux-arm-kernel/2022-January/710292.html
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2711.dtsi
++++ b/arch/arm/boot/dts/bcm2711.dtsi
+@@ -320,7 +320,7 @@
+ 		aon_intr: interrupt-controller@7ef00100 {
+ 			compatible = "brcm,bcm2711-l2-intc", "brcm,l2-intc";
+ 			reg = <0x7ef00100 0x30>;
+-			interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
++			interrupts = <GIC_SPI 96 IRQ_TYPE_EDGE_RISING>;
+ 			interrupt-controller;
+ 			#interrupt-cells = <1>;
+ 			status = "disabled";
+@@ -403,7 +403,7 @@
+ 				 <&clk_27MHz>;
+ 			resets = <&dvp 1>;
+ 			interrupt-parent = <&aon_intr>;
+-			interrupts = <8>, <7>, <6>,
++			interrupts = <8>, <7>, <6>,	// This is correct
+ 				     <9>, <10>, <11>;
+ 			interrupt-names = "cec-tx", "cec-rx", "cec-low",
+ 					  "wakeup", "hpd-connected", "hpd-removed";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0668-media-i2c-imx219-Correct-the-minimum-vblanking-value.patch b/target/linux/bcm27xx/patches-5.15/950-0668-media-i2c-imx219-Correct-the-minimum-vblanking-value.patch
new file mode 100644
index 0000000000..dd4bc6b6e6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0668-media-i2c-imx219-Correct-the-minimum-vblanking-value.patch
@@ -0,0 +1,26 @@
+From d78bdb0309f5ad3771dda28e0cc959bc929f4590 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 25 Jan 2022 15:48:53 +0000
+Subject: [PATCH] media: i2c: imx219: Correct the minimum vblanking
+ value
+
+The datasheet for this sensor documents the minimum vblanking as being
+32 lines. It does fix some problems with occasional black lines at the
+bottom of images (tested on Raspberry Pi).
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ drivers/media/i2c/imx219.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx219.c
++++ b/drivers/media/i2c/imx219.c
+@@ -55,7 +55,7 @@
+ #define IMX219_VTS_30FPS_640x480	0x06e3
+ #define IMX219_VTS_MAX			0xffff
+ 
+-#define IMX219_VBLANK_MIN		4
++#define IMX219_VBLANK_MIN		32
+ 
+ /*Frame Length Line*/
+ #define IMX219_FLL_MIN			0x08a6
diff --git a/target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch b/target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch
new file mode 100644
index 0000000000..819e983e6e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0669-drm-vc4_hdmi-Add-Broadcast-RGB-property-to-allow-ove.patch
@@ -0,0 +1,222 @@
+From b6cf78ca0773f54074da8dc3401b9f52aec2e27e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 8 Apr 2020 16:12:02 +0100
+Subject: [PATCH] drm/vc4_hdmi: Add Broadcast RGB property to allow
+ override of RGB range
+
+Copy Intel's "Broadcast RGB" property semantics to add manual override
+of the HDMI pixel range for monitors that don't abide by the content
+of the AVI Infoframe.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 103 +++++++++++++++++++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  15 +++++
+ 2 files changed, 118 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -56,6 +56,14 @@
+ #include "vc4_hdmi_regs.h"
+ #include "vc4_regs.h"
+ 
++/*
++ * "Broadcast RGB" property.
++ * Allows overriding of HDMI full or limited range RGB
++ */
++#define VC4_BROADCAST_RGB_AUTO 0
++#define VC4_BROADCAST_RGB_FULL 1
++#define VC4_BROADCAST_RGB_LIMITED 2
++
+ #define VC5_HDMI_HORZA_HFP_SHIFT		16
+ #define VC5_HDMI_HORZA_HFP_MASK			VC4_MASK(28, 16)
+ #define VC5_HDMI_HORZA_VPOS			BIT(15)
+@@ -135,6 +143,10 @@ static bool vc4_hdmi_is_full_range_rgb(s
+ {
+ 	struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder;
+ 
++	if (vc4_hdmi->broadcast_rgb == VC4_BROADCAST_RGB_LIMITED)
++		return false;
++	else if (vc4_hdmi->broadcast_rgb == VC4_BROADCAST_RGB_FULL)
++		return true;
+ 	return !vc4_encoder->hdmi_monitor ||
+ 		drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL;
+ }
+@@ -341,6 +353,65 @@ static int vc4_hdmi_connector_atomic_che
+ 	return 0;
+ }
+ 
++/**
++ * vc4_hdmi_connector_atomic_get_property - hook for
++ *						connector->atomic_get_property.
++ * @connector: Connector to get the property for.
++ * @state: Connector state to retrieve the property from.
++ * @property: Property to retrieve.
++ * @val: Return value for the property.
++ *
++ * Returns the atomic property value for a digital connector.
++ */
++int vc4_hdmi_connector_get_property(struct drm_connector *connector,
++				    const struct drm_connector_state *state,
++				    struct drm_property *property,
++				    uint64_t *val)
++{
++	struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
++	const struct vc4_hdmi_connector_state *vc4_conn_state =
++				const_conn_state_to_vc4_hdmi_conn_state(state);
++
++	if (property == vc4_hdmi->broadcast_rgb_property) {
++		*val = vc4_conn_state->broadcast_rgb;
++	} else {
++		DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n",
++				 property->base.id, property->name);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++/**
++ * vc4_hdmi_connector_atomic_set_property - hook for
++ *						connector->atomic_set_property.
++ * @connector: Connector to set the property for.
++ * @state: Connector state to set the property on.
++ * @property: Property to set.
++ * @val: New value for the property.
++ *
++ * Sets the atomic property value for a digital connector.
++ */
++int vc4_hdmi_connector_set_property(struct drm_connector *connector,
++				    struct drm_connector_state *state,
++				    struct drm_property *property,
++				    uint64_t val)
++{
++	struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
++	struct vc4_hdmi_connector_state *vc4_conn_state =
++				conn_state_to_vc4_hdmi_conn_state(state);
++
++	if (property == vc4_hdmi->broadcast_rgb_property) {
++		vc4_conn_state->broadcast_rgb = val;
++		return 0;
++	}
++
++	DRM_DEBUG_ATOMIC("Unknown property [PROP:%d:%s]\n",
++			 property->base.id, property->name);
++	return -EINVAL;
++}
++
+ static void vc4_hdmi_connector_reset(struct drm_connector *connector)
+ {
+ 	struct vc4_hdmi_connector_state *old_state =
+@@ -377,6 +448,7 @@ vc4_hdmi_connector_duplicate_state(struc
+ 	new_state->pixel_rate = vc4_state->pixel_rate;
+ 	new_state->output_bpc = vc4_state->output_bpc;
+ 	new_state->output_format = vc4_state->output_format;
++	new_state->broadcast_rgb = vc4_state->broadcast_rgb;
+ 	__drm_atomic_helper_connector_duplicate_state(connector, &new_state->base);
+ 
+ 	return &new_state->base;
+@@ -389,6 +461,8 @@ static const struct drm_connector_funcs
+ 	.reset = vc4_hdmi_connector_reset,
+ 	.atomic_duplicate_state = vc4_hdmi_connector_duplicate_state,
+ 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
++	.atomic_get_property = vc4_hdmi_connector_get_property,
++	.atomic_set_property = vc4_hdmi_connector_set_property,
+ };
+ 
+ static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = {
+@@ -396,6 +470,32 @@ static const struct drm_connector_helper
+ 	.atomic_check = vc4_hdmi_connector_atomic_check,
+ };
+ 
++static const struct drm_prop_enum_list broadcast_rgb_names[] = {
++	{ VC4_BROADCAST_RGB_AUTO, "Automatic" },
++	{ VC4_BROADCAST_RGB_FULL, "Full" },
++	{ VC4_BROADCAST_RGB_LIMITED, "Limited 16:235" },
++};
++
++static void
++vc4_hdmi_attach_broadcast_rgb_property(struct drm_device *dev,
++				       struct vc4_hdmi *vc4_hdmi)
++{
++	struct drm_property *prop = vc4_hdmi->broadcast_rgb_property;
++
++	if (!prop) {
++		prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
++						"Broadcast RGB",
++						broadcast_rgb_names,
++						ARRAY_SIZE(broadcast_rgb_names));
++		if (!prop)
++			return;
++
++		vc4_hdmi->broadcast_rgb_property = prop;
++	}
++
++	drm_object_attach_property(&vc4_hdmi->connector.base, prop, 0);
++}
++
+ static int vc4_hdmi_connector_init(struct drm_device *dev,
+ 				   struct vc4_hdmi *vc4_hdmi)
+ {
+@@ -439,6 +539,8 @@ static int vc4_hdmi_connector_init(struc
+ 	if (vc4_hdmi->variant->supports_hdr)
+ 		drm_connector_attach_hdr_output_metadata_property(connector);
+ 
++	vc4_hdmi_attach_broadcast_rgb_property(dev, vc4_hdmi);
++
+ 	drm_connector_attach_encoder(connector, encoder);
+ 
+ 	return 0;
+@@ -1384,6 +1486,7 @@ static void vc4_hdmi_encoder_atomic_mode
+ 	mutex_lock(&vc4_hdmi->mutex);
+ 	vc4_hdmi->output_bpc = vc4_state->output_bpc;
+ 	vc4_hdmi->output_format = vc4_state->output_format;
++	vc4_hdmi->broadcast_rgb = vc4_state->broadcast_rgb;
+ 	memcpy(&vc4_hdmi->saved_adjusted_mode,
+ 	       &crtc_state->adjusted_mode,
+ 	       sizeof(vc4_hdmi->saved_adjusted_mode));
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -140,6 +140,8 @@ struct vc4_hdmi {
+ 
+ 	struct delayed_work scrambling_work;
+ 
++	struct drm_property *broadcast_rgb_property;
++
+ 	struct i2c_adapter *ddc;
+ 	void __iomem *hdmicore_regs;
+ 	void __iomem *hd_regs;
+@@ -240,6 +242,12 @@ struct vc4_hdmi {
+ 	 */
+ 	enum vc4_hdmi_output_format output_format;
+ 
++	/**
++	 * @broadcast_rgb: Copy of @vc4_connector_state.broadcast_rgb
++	 * for use outside of KMS hooks. Protected by @mutex.
++	 */
++	int broadcast_rgb;
++
+ 	/* VC5 debugfs regset */
+ 	struct debugfs_regset32 cec_regset;
+ 	struct debugfs_regset32 csc_regset;
+@@ -268,6 +276,7 @@ struct vc4_hdmi_connector_state {
+ 	unsigned long long		pixel_rate;
+ 	unsigned int 			output_bpc;
+ 	enum vc4_hdmi_output_format	output_format;
++	int				broadcast_rgb;
+ };
+ 
+ static inline struct vc4_hdmi_connector_state *
+@@ -275,6 +284,12 @@ conn_state_to_vc4_hdmi_conn_state(struct
+ {
+ 	return container_of(conn_state, struct vc4_hdmi_connector_state, base);
+ }
++
++static inline const struct vc4_hdmi_connector_state *
++const_conn_state_to_vc4_hdmi_conn_state(const struct drm_connector_state *conn_state)
++{
++	return container_of(conn_state, struct vc4_hdmi_connector_state, base);
++}
+ 
+ void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
+ 		       struct vc4_hdmi_connector_state *vc4_conn_state);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0670-overlays-Add-MAX30102-HR-to-i2c-sensor-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0670-overlays-Add-MAX30102-HR-to-i2c-sensor-overlay.patch
new file mode 100644
index 0000000000..82bcce6671
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0670-overlays-Add-MAX30102-HR-to-i2c-sensor-overlay.patch
@@ -0,0 +1,78 @@
+From 2f995c2231e449016206dd2905b87846adc2b357 Mon Sep 17 00:00:00 2001
+From: coldspark29 <jan.claussen10@web.de>
+Date: Wed, 18 Aug 2021 13:41:04 +0200
+Subject: [PATCH] overlays: Add MAX30102 HR to i2c-sensor overlay
+
+Add support for the MAX30102 heart rate and blood oxygen sensor to the
+i2c-sensor overlay.
+
+See: https://github.com/raspberrypi/linux/pull/4535
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             |  6 ++++++
+ .../boot/dts/overlays/i2c-sensor-overlay.dts  | 20 +++++++++++++++++++
+ 2 files changed, 26 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1725,6 +1725,9 @@ Params: addr                    Set the
+ 
+         htu21                   Select the HTU21 temperature and humidity sensor
+ 
++        int_pin                 Set the GPIO to use for interrupts (max30102
++                                only)
++
+         lm75                    Select the Maxim LM75 temperature sensor
+                                 Valid addresses 0x48-0x4f, default 0x4f
+ 
+@@ -1733,6 +1736,9 @@ Params: addr                    Set the
+         max17040                Select the Maxim Integrated MAX17040 battery
+                                 monitor
+ 
++        max30102                Select the Maxim Integrated MAX30102 heart-rate
++                                and blood-oxygen sensor
++
+         sht3x                   Select the Sensiron SHT3x temperature and
+                                 humidity sensor. Valid addresses 0x44-0x45,
+                                 default 0x44
+--- a/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
+@@ -291,11 +291,30 @@
+ 		};
+ 	};
+ 
++	fragment@19 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			max30102: max30102@57 {
++				compatible = "maxim,max30102";
++				reg = <0x57>;
++				maxim,red-led-current-microamp = <7000>;
++				maxim,ir-led-current-microamp  = <7000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 2>;
++			};
++		};
++	};
++
+ 	__overrides__ {
+ 		addr =  <&bme280>,"reg:0", <&bmp280>,"reg:0", <&tmp102>,"reg:0",
+ 			<&lm75>,"reg:0", <&hdc100x>,"reg:0", <&sht3x>,"reg:0",
+ 			<&ds1621>,"reg:0", <&bme680>,"reg:0", <&ccs811>,"reg:0",
+ 			<&bh1750>,"reg:0";
++		int_pin = <&max30102>, "interrupts:0";
+ 		bme280 = <0>,"+0";
+ 		bmp085 = <0>,"+1";
+ 		bmp180 = <0>,"+2";
+@@ -316,5 +335,6 @@
+ 		sgp30 = <0>,"+16";
+ 		ccs811 = <0>, "+17";
+ 		bh1750 = <0>, "+18";
++		max30102 = <0>,"+19";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0671-misc-bcm2835_smi-Use-proper-enum-types-for-dma_-un-m.patch b/target/linux/bcm27xx/patches-5.15/950-0671-misc-bcm2835_smi-Use-proper-enum-types-for-dma_-un-m.patch
new file mode 100644
index 0000000000..ff669aab38
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0671-misc-bcm2835_smi-Use-proper-enum-types-for-dma_-un-m.patch
@@ -0,0 +1,85 @@
+From db1007fae024ae65b6f8a28988ce9d87c7d92995 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <nathan@kernel.org>
+Date: Mon, 31 Jan 2022 17:12:10 -0700
+Subject: [PATCH] misc: bcm2835_smi: Use proper enum types for
+ dma_{,un}map_single()
+
+Clang warns:
+
+  drivers/misc/bcm2835_smi.c:692:4: warning: implicit conversion from enumeration type 'enum dma_transfer_direction' to different enumeration type 'enum dma_data_direction' [-Wenum-conversion]
+                          DMA_MEM_TO_DEV);
+                          ^~~~~~~~~~~~~~~
+  ./include/linux/dma-mapping.h:406:66: note: expanded from macro 'dma_map_single'
+  #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, 0)
+                                     ~~~~~~~~~~~~~~~~~~~~          ^
+  drivers/misc/bcm2835_smi.c:705:35: warning: implicit conversion from enumeration type 'enum dma_transfer_direction' to different enumeration type 'enum dma_data_direction' [-Wenum-conversion]
+                          (inst->dev, phy_addr, n_bytes, DMA_MEM_TO_DEV);
+                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
+  ./include/linux/dma-mapping.h:407:70: note: expanded from macro 'dma_unmap_single'
+  #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, 0)
+                                       ~~~~~~~~~~~~~~~~~~~~~~          ^
+  drivers/misc/bcm2835_smi.c:751:12: warning: implicit conversion from enumeration type 'enum dma_transfer_direction' to different enumeration type 'enum dma_data_direction' [-Wenum-conversion]
+                                                       DMA_DEV_TO_MEM);
+                                                       ^~~~~~~~~~~~~~~
+  ./include/linux/dma-mapping.h:406:66: note: expanded from macro 'dma_map_single'
+  #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, 0)
+                                     ~~~~~~~~~~~~~~~~~~~~          ^
+  drivers/misc/bcm2835_smi.c:761:50: warning: implicit conversion from enumeration type 'enum dma_transfer_direction' to different enumeration type 'enum dma_data_direction' [-Wenum-conversion]
+                  dma_unmap_single(inst->dev, phy_addr, n_bytes, DMA_DEV_TO_MEM);
+                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
+  ./include/linux/dma-mapping.h:407:70: note: expanded from macro 'dma_unmap_single'
+  #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, 0)
+                                       ~~~~~~~~~~~~~~~~~~~~~~          ^
+  4 warnings generated.
+
+Use the proper enumerated type to clear up the warning. There is not
+actually a bug here because the enumerated types have the same integer
+value:
+
+DMA_MEM_TO_DEV = DMA_TO_DEVICE = 1
+DMA_DEV_TO_MEM = DMA_FROM_DEVICE = 2
+
+Fixes: 93254d0f7bc8 ("Add SMI driver")
+Signed-off-by: Nathan Chancellor <nathan@kernel.org>
+---
+ drivers/misc/bcm2835_smi.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/misc/bcm2835_smi.c
++++ b/drivers/misc/bcm2835_smi.c
+@@ -689,7 +689,7 @@ void bcm2835_smi_write_buf(
+ 			inst->dev,
+ 			(void *)buf,
+ 			n_bytes,
+-			DMA_MEM_TO_DEV);
++			DMA_TO_DEVICE);
+ 		struct scatterlist *sgl =
+ 			smi_scatterlist_from_buffer(inst, phy_addr, n_bytes,
+ 				&inst->buffer_sgl);
+@@ -702,7 +702,7 @@ void bcm2835_smi_write_buf(
+ 		smi_dma_write_sgl(inst, sgl, 1, n_bytes);
+ 
+ 		dma_unmap_single
+-			(inst->dev, phy_addr, n_bytes, DMA_MEM_TO_DEV);
++			(inst->dev, phy_addr, n_bytes, DMA_TO_DEVICE);
+ 	} else if (n_bytes) {
+ 		smi_write_fifo(inst, (uint32_t *) buf, n_bytes);
+ 	}
+@@ -748,7 +748,7 @@ void bcm2835_smi_read_buf(struct bcm2835
+ 	if (n_bytes > DMA_THRESHOLD_BYTES) {
+ 		dma_addr_t phy_addr = dma_map_single(inst->dev,
+ 						     buf, n_bytes,
+-						     DMA_DEV_TO_MEM);
++						     DMA_FROM_DEVICE);
+ 		struct scatterlist *sgl = smi_scatterlist_from_buffer(
+ 			inst, phy_addr, n_bytes,
+ 			&inst->buffer_sgl);
+@@ -758,7 +758,7 @@ void bcm2835_smi_read_buf(struct bcm2835
+ 			goto out;
+ 		}
+ 		smi_dma_read_sgl(inst, sgl, 1, n_bytes);
+-		dma_unmap_single(inst->dev, phy_addr, n_bytes, DMA_DEV_TO_MEM);
++		dma_unmap_single(inst->dev, phy_addr, n_bytes, DMA_FROM_DEVICE);
+ 	} else if (n_bytes) {
+ 		smi_read_fifo(inst, (uint32_t *)buf, n_bytes);
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0672-ASoC-ma120x0p-Remove-unnecessary-const-specifier.patch b/target/linux/bcm27xx/patches-5.15/950-0672-ASoC-ma120x0p-Remove-unnecessary-const-specifier.patch
new file mode 100644
index 0000000000..ac4202820e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0672-ASoC-ma120x0p-Remove-unnecessary-const-specifier.patch
@@ -0,0 +1,38 @@
+From e7992089f1727409eca46e6244f7dd71d4e01179 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <nathan@kernel.org>
+Date: Mon, 31 Jan 2022 17:15:35 -0700
+Subject: [PATCH] ASoC: ma120x0p: Remove unnecessary const specifier
+
+Clang warns:
+
+  sound/soc/codecs/ma120x0p.c:891:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
+  static const SOC_VALUE_ENUM_SINGLE_DECL(pwr_mode_ctrl,
+               ^
+  ./include/sound/soc.h:362:2: note: expanded from macro 'SOC_VALUE_ENUM_SINGLE_DECL'
+          SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
+          ^
+  ./include/sound/soc.h:359:2: note: expanded from macro 'SOC_VALUE_ENUM_DOUBLE_DECL'
+          const struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
+          ^
+  1 warning generated.
+
+SOC_VALUE_ENUM_DOUBLE_DECL already has a const specifier. Remove the duplicate
+const to clean up the warning.
+
+Fixes: 42444979e710 ("Add support for all the downstream rpi sound card drivers")
+Signed-off-by: Nathan Chancellor <nathan@kernel.org>
+---
+ sound/soc/codecs/ma120x0p.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/sound/soc/codecs/ma120x0p.c
++++ b/sound/soc/codecs/ma120x0p.c
+@@ -888,7 +888,7 @@ static const int pwr_mode_values[] = {
+ 		0x70,
+ 	};
+ 
+-static const SOC_VALUE_ENUM_SINGLE_DECL(pwr_mode_ctrl,
++static SOC_VALUE_ENUM_SINGLE_DECL(pwr_mode_ctrl,
+ 	ma_pm_man__a, 0, 0x70,
+ 	pwr_mode_texts,
+ 	pwr_mode_values);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0673-ASoC-bcm-allo-piano-dac-plus-Remove-unnecessary-cons.patch b/target/linux/bcm27xx/patches-5.15/950-0673-ASoC-bcm-allo-piano-dac-plus-Remove-unnecessary-cons.patch
new file mode 100644
index 0000000000..a98d09e94c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0673-ASoC-bcm-allo-piano-dac-plus-Remove-unnecessary-cons.patch
@@ -0,0 +1,75 @@
+From fb7adf252e4813f86d2871448a0bdb586bfcd1f1 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <nathan@kernel.org>
+Date: Mon, 31 Jan 2022 17:20:55 -0700
+Subject: [PATCH] ASoC: bcm: allo-piano-dac-plus: Remove unnecessary
+ const specifiers
+
+Clang warns:
+
+  sound/soc/bcm/allo-piano-dac-plus.c:66:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
+  static const SOC_ENUM_SINGLE_DECL(allo_piano_mode_enum,
+               ^
+  ./include/sound/soc.h:355:2: note: expanded from macro 'SOC_ENUM_SINGLE_DECL'
+          SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
+          ^
+  ./include/sound/soc.h:352:2: note: expanded from macro 'SOC_ENUM_DOUBLE_DECL'
+          const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
+          ^
+  sound/soc/bcm/allo-piano-dac-plus.c:75:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
+  static const SOC_ENUM_SINGLE_DECL(allo_piano_dual_mode_enum,
+               ^
+  ./include/sound/soc.h:355:2: note: expanded from macro 'SOC_ENUM_SINGLE_DECL'
+          SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
+          ^
+  ./include/sound/soc.h:352:2: note: expanded from macro 'SOC_ENUM_DOUBLE_DECL'
+          const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
+          ^
+  sound/soc/bcm/allo-piano-dac-plus.c:96:14: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]
+  static const SOC_ENUM_SINGLE_DECL(allo_piano_enum,
+               ^
+  ./include/sound/soc.h:355:2: note: expanded from macro 'SOC_ENUM_SINGLE_DECL'
+          SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
+          ^
+  ./include/sound/soc.h:352:2: note: expanded from macro 'SOC_ENUM_DOUBLE_DECL'
+          const struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
+          ^
+  3 warnings generated.
+
+SOC_VALUE_ENUM_DOUBLE_DECL already has a const specifier. Remove the duplicate
+const specifiers to clean up the warnings.
+
+Fixes: 42444979e710 ("Add support for all the downstream rpi sound card drivers")
+Signed-off-by: Nathan Chancellor <nathan@kernel.org>
+---
+ sound/soc/bcm/allo-piano-dac-plus.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/sound/soc/bcm/allo-piano-dac-plus.c
++++ b/sound/soc/bcm/allo-piano-dac-plus.c
+@@ -63,7 +63,7 @@ static const char * const allo_piano_mod
+ 	"2.2",
+ };
+ 
+-static const SOC_ENUM_SINGLE_DECL(allo_piano_mode_enum,
++static SOC_ENUM_SINGLE_DECL(allo_piano_mode_enum,
+ 		0, 0, allo_piano_mode_texts);
+ 
+ static const char * const allo_piano_dual_mode_texts[] = {
+@@ -72,7 +72,7 @@ static const char * const allo_piano_dua
+ 	"Dual-Stereo",
+ };
+ 
+-static const SOC_ENUM_SINGLE_DECL(allo_piano_dual_mode_enum,
++static SOC_ENUM_SINGLE_DECL(allo_piano_dual_mode_enum,
+ 		0, 0, allo_piano_dual_mode_texts);
+ 
+ static const char * const allo_piano_dsp_low_pass_texts[] = {
+@@ -93,7 +93,7 @@ static const char * const allo_piano_dsp
+ 	"200",
+ };
+ 
+-static const SOC_ENUM_SINGLE_DECL(allo_piano_enum,
++static SOC_ENUM_SINGLE_DECL(allo_piano_enum,
+ 		0, 0, allo_piano_dsp_low_pass_texts);
+ 
+ static int __snd_allo_piano_dsp_program(struct snd_soc_pcm_runtime *rtd,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0674-media-bcm2835-unicam-Set-ret-on-error-path-in-unicam.patch b/target/linux/bcm27xx/patches-5.15/950-0674-media-bcm2835-unicam-Set-ret-on-error-path-in-unicam.patch
new file mode 100644
index 0000000000..25c9bac13a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0674-media-bcm2835-unicam-Set-ret-on-error-path-in-unicam.patch
@@ -0,0 +1,43 @@
+From 0cc1acc72364d72e8cae56ad6eea797bad00e3c5 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <nathan@kernel.org>
+Date: Mon, 31 Jan 2022 17:23:38 -0700
+Subject: [PATCH] media: bcm2835-unicam: Set ret on error path in
+ unicam_async_complete()
+
+Clang warns:
+
+  drivers/media/platform/bcm2835/bcm2835-unicam.c:3109:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
+          if (!source_pads) {
+              ^~~~~~~~~~~~
+  drivers/media/platform/bcm2835/bcm2835-unicam.c:3152:9: note: uninitialized use occurs here
+          return ret;
+                 ^~~
+  drivers/media/platform/bcm2835/bcm2835-unicam.c:3109:2: note: remove the 'if' if its condition is always false
+          if (!source_pads) {
+          ^~~~~~~~~~~~~~~~~~~
+  drivers/media/platform/bcm2835/bcm2835-unicam.c:3091:9: note: initialize the variable 'ret' to silence this warning
+          int ret;
+                 ^
+                  = 0
+  1 warning generated.
+
+When the if condition is true, ret will be used uninitialized, which
+could result in undesirable behavior. Set ret to -ENODEV on the error
+path, which is a standard error code for the ->complete() callback.
+
+Fixes: d056e86eb35f ("media/bcm2835-unicam: Parse pad numbers correctly")
+Signed-off-by: Nathan Chancellor <nathan@kernel.org>
+---
+ drivers/media/platform/bcm2835/bcm2835-unicam.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -3109,6 +3109,7 @@ static int unicam_async_complete(struct
+ 	}
+ 	if (!source_pads) {
+ 		unicam_err(unicam, "No source pads on sensor.\n");
++		ret = -ENODEV;
+ 		goto unregister;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0675-media-i2c-ov9281-Initialize-id_msb-to-zero-in-ov9281.patch b/target/linux/bcm27xx/patches-5.15/950-0675-media-i2c-ov9281-Initialize-id_msb-to-zero-in-ov9281.patch
new file mode 100644
index 0000000000..c80323cdd1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0675-media-i2c-ov9281-Initialize-id_msb-to-zero-in-ov9281.patch
@@ -0,0 +1,48 @@
+From 573172b7b51a5b955627bd3d0cde5b2d2c4f9441 Mon Sep 17 00:00:00 2001
+From: Nathan Chancellor <nathan@kernel.org>
+Date: Mon, 31 Jan 2022 17:50:43 -0700
+Subject: [PATCH] media: i2c: ov9281: Initialize id_msb to zero in
+ ov9281_check_sensor_id()
+
+Clang warns:
+
+  drivers/media/i2c/ov9281.c:1132:6: warning: variable 'id_msb' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
+          if (!ret)
+              ^~~~
+  drivers/media/i2c/ov9281.c:1135:9: note: uninitialized use occurs here
+          id |= (id_msb << 8);
+                 ^~~~~~
+  drivers/media/i2c/ov9281.c:1132:2: note: remove the 'if' if its condition is always true
+          if (!ret)
+          ^~~~~~~~~
+  drivers/media/i2c/ov9281.c:1127:20: note: initialize the variable 'id_msb' to silence this warning
+          u32 id = 0, id_msb;
+                            ^
+                             = 0
+  1 warning generated.
+
+If the first ov9281_read_reg() call fails, id_msb will be used
+uninitialized. However, this warning does not actually matter in
+practice because the value of id is not used when either call to
+ov9281_read_reg() fails, as the boolean OR will short circuit due to the
+ret condition being checked first. Regardless, it is not good to use
+variables uninitialized so silence the warning by initializing id_msb to
+0, as was done with id.
+
+Fixes: 20855581e0eb ("media: i2c: ov9281: Read chip ID via 2 reads")
+Signed-off-by: Nathan Chancellor <nathan@kernel.org>
+---
+ drivers/media/i2c/ov9281.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov9281.c
++++ b/drivers/media/i2c/ov9281.c
+@@ -1124,7 +1124,7 @@ static int ov9281_check_sensor_id(struct
+ 				  struct i2c_client *client)
+ {
+ 	struct device *dev = &ov9281->client->dev;
+-	u32 id = 0, id_msb;
++	u32 id = 0, id_msb = 0;
+ 	int ret;
+ 
+ 	ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID + 1,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0676-i2c-bcm2835-Make-clock-stretch-timeout-configurable.patch b/target/linux/bcm27xx/patches-5.15/950-0676-i2c-bcm2835-Make-clock-stretch-timeout-configurable.patch
new file mode 100644
index 0000000000..f1404f4a92
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0676-i2c-bcm2835-Make-clock-stretch-timeout-configurable.patch
@@ -0,0 +1,44 @@
+From 8387866a1d91c78d9aa75052821b1dafa25fff0f Mon Sep 17 00:00:00 2001
+From: Alex Crawford <raspberrypi/linux@code.acrawford.com>
+Date: Fri, 28 Jan 2022 13:36:51 -0800
+Subject: [PATCH] i2c: bcm2835: Make clock-stretch timeout configurable
+
+The default clock-stretch timeout is 35 mS, which works well for
+SMBus, but there are some I2C devices which can stretch the clock even
+longer. Rather than trying to prescribe a safe default for everyone,
+allow the timeout to be configured.
+
+Signed-off-by: Alex Crawford <raspberrypi/linux@code.acrawford.com>
+---
+ drivers/i2c/busses/i2c-bcm2835.c | 10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+--- a/drivers/i2c/busses/i2c-bcm2835.c
++++ b/drivers/i2c/busses/i2c-bcm2835.c
+@@ -60,6 +60,10 @@ static unsigned int debug;
+ module_param(debug, uint, 0644);
+ MODULE_PARM_DESC(debug, "1=err, 2=isr, 3=xfer");
+ 
++static unsigned int clk_tout_ms = 35; /* SMBUs-recommended 35ms */
++module_param(clk_tout_ms, uint, 0644);
++MODULE_PARM_DESC(clk_tout_ms, "clock-stretch timeout (mS)");
++
+ #define BCM2835_DEBUG_MAX	512
+ struct bcm2835_debug {
+ 	struct i2c_msg *msg;
+@@ -219,12 +223,12 @@ static int clk_bcm2835_i2c_set_rate(stru
+ 			   (redl << BCM2835_I2C_REDL_SHIFT));
+ 
+ 	/*
+-	 * Set the clock stretch timeout to the SMBUs-recommended 35ms.
++	 * Set the clock stretch timeout.
+ 	 */
+-	if (rate > 0xffff*1000/35)
++	if (rate > 0xffff*1000/clk_tout_ms)
+ 	    clk_tout = 0xffff;
+ 	else
+-	    clk_tout = 35*rate/1000;
++	    clk_tout = clk_tout_ms*rate/1000;
+ 
+ 	bcm2835_i2c_writel(div->i2c_dev, BCM2835_I2C_CLKT, clk_tout);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0677-Patching-lan78xx-for-SOF_TIMESTAMPING_TX_SOFTWARE-su.patch b/target/linux/bcm27xx/patches-5.15/950-0677-Patching-lan78xx-for-SOF_TIMESTAMPING_TX_SOFTWARE-su.patch
new file mode 100644
index 0000000000..d8ee2ab4e8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0677-Patching-lan78xx-for-SOF_TIMESTAMPING_TX_SOFTWARE-su.patch
@@ -0,0 +1,20 @@
+From 677096b562111a87f52345346ee9c1b877fcdcd9 Mon Sep 17 00:00:00 2001
+From: tiagofreire-pt <41837236+tiagofreire-pt@users.noreply.github.com>
+Date: Sat, 29 Jan 2022 10:01:36 +0000
+Subject: [PATCH] Patching lan78xx for SOF_TIMESTAMPING_TX_SOFTWARE
+ support
+
+---
+ drivers/net/usb/lan78xx.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -1788,6 +1788,7 @@ static const struct ethtool_ops lan78xx_
+ 	.set_link_ksettings = lan78xx_set_link_ksettings,
+ 	.get_regs_len	= lan78xx_get_regs_len,
+ 	.get_regs	= lan78xx_get_regs,
++	.get_ts_info    = ethtool_op_get_ts_info,
+ };
+ 
+ static void lan78xx_init_mac_address(struct lan78xx_net *dev)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0678-drm-vc4-Add-DRM-210101010-RGB-formats-for-hvs5.patch b/target/linux/bcm27xx/patches-5.15/950-0678-drm-vc4-Add-DRM-210101010-RGB-formats-for-hvs5.patch
new file mode 100644
index 0000000000..76b5ee5dbb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0678-drm-vc4-Add-DRM-210101010-RGB-formats-for-hvs5.patch
@@ -0,0 +1,51 @@
+From 9b3860cba9b5a36a2fb5023086e1217578e71076 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 31 Jan 2022 16:28:43 +0000
+Subject: [PATCH] drm/vc4: Add DRM 210101010 RGB formats for hvs5.
+
+HVS5 supports the 210101010 RGB[A|X] formats, but they were
+missing from the DRM to HVS mapping list, so weren't available.
+Add them in.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 28 ++++++++++++++++++++++++++++
+ 1 file changed, 28 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -135,6 +135,34 @@ static const struct hvs_format {
+ 		.pixel_order = HVS_PIXEL_ORDER_XYCBCR,
+ 		.hvs5_only = true,
+ 	},
++	{
++		.drm = DRM_FORMAT_XRGB2101010,
++		.hvs = HVS_PIXEL_FORMAT_RGBA1010102,
++		.pixel_order = HVS_PIXEL_ORDER_ABGR,
++		.pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
++		.hvs5_only = true,
++	},
++	{
++		.drm = DRM_FORMAT_ARGB2101010,
++		.hvs = HVS_PIXEL_FORMAT_RGBA1010102,
++		.pixel_order = HVS_PIXEL_ORDER_ABGR,
++		.pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB,
++		.hvs5_only = true,
++	},
++	{
++		.drm = DRM_FORMAT_ABGR2101010,
++		.hvs = HVS_PIXEL_FORMAT_RGBA1010102,
++		.pixel_order = HVS_PIXEL_ORDER_ARGB,
++		.pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
++		.hvs5_only = true,
++	},
++	{
++		.drm = DRM_FORMAT_XBGR2101010,
++		.hvs = HVS_PIXEL_FORMAT_RGBA1010102,
++		.pixel_order = HVS_PIXEL_ORDER_ARGB,
++		.pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR,
++		.hvs5_only = true,
++	},
+ };
+ 
+ static const struct hvs_format *vc4_get_hvs_format(u32 drm_format)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0679-overlays-Add-spi0-0cs-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0679-overlays-Add-spi0-0cs-overlay.patch
new file mode 100644
index 0000000000..0419c6be59
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0679-overlays-Add-spi0-0cs-overlay.patch
@@ -0,0 +1,84 @@
+From 623f4a862134202e9f0705812cabe2abef6c2f9b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 31 Jan 2022 21:01:25 +0000
+Subject: [PATCH] overlays: Add spi0-0cs overlay
+
+An overlay to enable SPI0 without claiming any chip select GPIOs.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             |  8 ++++
+ .../boot/dts/overlays/spi0-0cs-overlay.dts    | 39 +++++++++++++++++++
+ 3 files changed, 48 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/spi0-0cs-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -195,6 +195,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	spi-gpio35-39.dtbo \
+ 	spi-gpio40-45.dtbo \
+ 	spi-rtc.dtbo \
++	spi0-0cs.dtbo \
+ 	spi0-1cs.dtbo \
+ 	spi0-2cs.dtbo \
+ 	spi1-1cs.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3115,6 +3115,14 @@ Params: ds3232                  Select t
+         cs_high                 This device requires an active-high CS
+ 
+ 
++Name:   spi0-0cs
++Info:   Don't claim any CS pins for SPI0. Requires a device with its chip
++        select permanently enabled, but frees a GPIO for e.g. a DPI display.
++Load:   dtoverlay=spi0-0cs,<param>=<val>
++Params: no_miso                 Don't claim and use the MISO pin (9), freeing
++                                it for other uses.
++
++
+ Name:   spi0-1cs
+ Info:   Only use one CS pin for SPI0
+ Load:   dtoverlay=spi0-1cs,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/spi0-0cs-overlay.dts
+@@ -0,0 +1,39 @@
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&spi0_cs_pins>;
++		frag0: __overlay__ {
++			brcm,pins;
++		};
++	};
++
++	fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			cs-gpios;
++			status = "okay";
++		};
++	};
++
++	fragment@2 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	fragment@3 {
++		target = <&spi0_pins>;
++		__dormant__ {
++			brcm,pins = <10 11>;
++		};
++	};
++
++	__overrides__ {
++		no_miso = <0>,"=3";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0680-dtoverlays-Rework-vc4-kms-dpi-overlays-to-remove-dup.patch b/target/linux/bcm27xx/patches-5.15/950-0680-dtoverlays-Rework-vc4-kms-dpi-overlays-to-remove-dup.patch
new file mode 100644
index 0000000000..1aa699f3fa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0680-dtoverlays-Rework-vc4-kms-dpi-overlays-to-remove-dup.patch
@@ -0,0 +1,545 @@
+From 2cc810fd22f30acabbf5e6726e003c5da56d3212 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 31 Jan 2022 17:25:19 +0000
+Subject: [PATCH] dtoverlays: Rework vc4-kms-dpi overlays to remove
+ duplication
+
+Removes all the common panel, dpi, and backlight configuration
+from the individual vc4-kms-dpi-* files into vc4-kms-dpi.dtsi.
+
+Creates a new vc4-kms-dpi-panel-overlay.dts for preconfigured
+panels, with overrides to enable the different panel configurations.
+
+Deprecates vc4-kms-dpi-at056tn53v1 as superceded by vc4-kms-dpi-panel.
+vc4-kms-kippah-7inch not deprecated for now as it is likely to be
+in wider use than at056tn53v1.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   2 +-
+ arch/arm/boot/dts/overlays/README             |  33 ++++-
+ arch/arm/boot/dts/overlays/overlay_map.dts    |   4 +
+ .../vc4-kms-dpi-at056tn53v1-overlay.dts       |  44 ------
+ .../overlays/vc4-kms-dpi-generic-overlay.dts  | 138 ++++--------------
+ .../overlays/vc4-kms-dpi-panel-overlay.dts    |  62 ++++++++
+ arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi   | 109 ++++++++++++++
+ .../overlays/vc4-kms-kippah-7inch-overlay.dts |  27 +---
+ 8 files changed, 235 insertions(+), 184 deletions(-)
+ delete mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-panel-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -234,8 +234,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	upstream-pi4.dtbo \
+ 	vc4-fkms-v3d.dtbo \
+ 	vc4-fkms-v3d-pi4.dtbo \
+-	vc4-kms-dpi-at056tn53v1.dtbo \
+ 	vc4-kms-dpi-generic.dtbo \
++	vc4-kms-dpi-panel.dtbo \
+ 	vc4-kms-dsi-7inch.dtbo \
+ 	vc4-kms-dsi-lt070me05000.dtbo \
+ 	vc4-kms-dsi-lt070me05000-v2.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3624,10 +3624,8 @@ Params: cma-512                 CMA is 5
+ 
+ 
+ Name:   vc4-kms-dpi-at056tn53v1
+-Info:   Enable an Innolux 5.6in VGA TFT connected to DPI interface under KMS.
+-        Requires vc4-kms-v3d to be loaded.
+-Load:   dtoverlay=vc4-kms-dpi-at056tn53v1
+-Params: <None>
++Info:   This overlay is now deprecated - see vc4-kms-dpi-panel,at056tn53v1
++Load:   <Deprecated>
+ 
+ 
+ Name:   vc4-kms-dpi-generic
+@@ -3659,6 +3657,33 @@ Params: clock-frequency         Display
+         backlight-gpio          Defines a GPIO to be used for backlight control
+                                 (default of none).
+         backlight-pwm           Defines a PWM channel to be used for backlight
++                                control (default of none). NB Disables audio
++                                headphone output as that also uses PWM.
++        backlight-pwm-chan      Choose channel on &pwm node for backlight
++                                control.
++                                (default 0).
++        backlight-pwm-gpio      GPIO pin to be used for the PWM backlight. See
++                                pwm-2chan for valid options.
++                                (default 18 - note this can only work with
++                                 rgb666-padhi).
++        backlight-pwm-func      Pin function of GPIO used for the PWM
++                                backlight.
++                                See pwm-2chan for valid options.
++                                (default 2).
++        backlight-def-brightness
++                                Set the default brightness. Normal range 1-16.
++                                (default 16).
++
++
++Name:   vc4-kms-dpi-panel
++Info:   Enable a preconfigured KMS DPI panel.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dpi-panel,<param>=<val>
++Params: at056tn53v1             Enable an Innolux 5.6in VGA TFT
++        kippah-7inch            Enable an Adafruit Kippah with 7inch panel.
++        backlight-gpio          Defines a GPIO to be used for backlight control
++                                (default of none).
++        backlight-pwm           Defines a PWM channel to be used for backlight
+                                 control (default of none). NB Disables audio
+                                 headphone output as that also uses PWM.
+         backlight-pwm-chan      Choose channel on &pwm node for backlight
+--- a/arch/arm/boot/dts/overlays/overlay_map.dts
++++ b/arch/arm/boot/dts/overlays/overlay_map.dts
+@@ -151,6 +151,10 @@
+ 		bcm2711;
+ 	};
+ 
++	vc4-kms-dpi-at056tn53v1 {
++		deprecated = "use vc4-kms-dpi-panel,at056tn53v1";
++	};
++
+ 	vc4-kms-v3d {
+ 		bcm2835;
+ 		bcm2711 = "vc4-kms-v3d-pi4";
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
++++ /dev/null
+@@ -1,44 +0,0 @@
+-/*
+- * vc4-kms-dpi-at056tn53v1-overlay.dts
+- */
+-
+-/dts-v1/;
+-/plugin/;
+-
+-#include <dt-bindings/gpio/gpio.h>
+-#include <dt-bindings/pinctrl/bcm2835.h>
+-
+-/ {
+-	compatible = "brcm,bcm2835";
+-
+-	fragment@0 {
+-		target-path = "/";
+-		__overlay__ {
+-			panel: panel {
+-				compatible = "innolux,at056tn53v1", "simple-panel";
+-
+-				port {
+-					panel_in: endpoint {
+-						remote-endpoint = <&dpi_out>;
+-					};
+-				};
+-			};
+-		};
+-	};
+-
+-	fragment@1 {
+-		target = <&dpi>;
+-		__overlay__  {
+-			status = "okay";
+-
+-			pinctrl-names = "default";
+-			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
+-
+-			port {
+-				dpi_out: endpoint {
+-					remote-endpoint = <&panel_in>;
+-				};
+-			};
+-		};
+-	};
+-};
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -5,124 +5,43 @@
+ /dts-v1/;
+ /plugin/;
+ 
+-#include <dt-bindings/gpio/gpio.h>
+-#include <dt-bindings/pinctrl/bcm2835.h>
++#include "vc4-kms-dpi.dtsi"
+ 
+ / {
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target-path = "/";
+-		__overlay__ {
+-			panel: panel {
+-				compatible = "panel-dpi";
+-
+-				width-mm = <154>;
+-				height-mm = <83>;
+-				bus-format = <0x1009>;
+-
+-				timing: panel-timing {
+-					clock-frequency = <29500000>;
+-					hactive = <800>;
+-					hfront-porch = <24>;
+-					hsync-len = <72>;
+-					hback-porch = <96>;
+-					hsync-active = <1>;
+-					vactive = <480>;
+-					vfront-porch = <3>;
+-					vsync-len = <10>;
+-					vback-porch = <7>;
+-					vsync-active = <1>;
+-
+-					de-active = <1>;
+-					pixelclk-active = <1>;
+-				};
+-
+-				port {
+-					panel_in: endpoint {
+-						remote-endpoint = <&dpi_out>;
+-					};
+-				};
+-			};
+-		};
+-	};
+-
+-	fragment@1 {
+-		target = <&dpi>;
+-		dpi_node: __overlay__  {
+-			status = "okay";
+-
+-			pinctrl-names = "default";
+-			pinctrl-0 = <&dpi_18bit_gpio0>;
+-
+-			port {
+-				dpi_out: endpoint {
+-					remote-endpoint = <&panel_in>;
+-				};
+-			};
+-		};
+-	};
+-
+-	fragment@2 {
+-		target = <&panel>;
+-		__dormant__  {
+-			backlight = <&backlight>;
+-		};
+-	};
+-
+-	fragment@3 {
+-		target-path = "/";
+-		__dormant__  {
+-			backlight: backlight {
+-				compatible = "gpio-backlight";
+-				gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
+-			};
+-		};
+-	};
+-
+-	fragment@4 {
+ 		target = <&panel>;
+-		__dormant__  {
+-			backlight = <&backlight_pwm>;
+-		};
+-	};
+-
+-	fragment@5 {
+-		target-path = "/";
+-		__dormant__  {
+-			backlight_pwm: backlight_pwm {
+-				compatible = "pwm-backlight";
+-				brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
+-				default-brightness-level = <16>;
+-				pwms = <&pwm 0 200000>;
+-			};
+-		};
+-	};
++		__overlay__  {
++			compatible = "panel-dpi";
+ 
+-	fragment@6 {
+-		target = <&pwm>;
+-		__dormant__ {
+-			pinctrl-names = "default";
+-			pinctrl-0 = <&pwm_pins>;
+-			assigned-clock-rates = <1000000>;
+-			status = "okay";
+-		};
+-	};
++			width-mm = <154>;
++			height-mm = <83>;
++			bus-format = <0x1009>;
++
++			timing: panel-timing {
++				clock-frequency = <29500000>;
++				hactive = <800>;
++				hfront-porch = <24>;
++				hsync-len = <72>;
++				hback-porch = <96>;
++				hsync-active = <1>;
++				vactive = <480>;
++				vfront-porch = <3>;
++				vsync-len = <10>;
++				vback-porch = <7>;
++				vsync-active = <1>;
+ 
+-	fragment@7 {
+-		target = <&gpio>;
+-		__dormant__ {
+-			pwm_pins: pwm_pins {
+-				brcm,pins = <18>;
+-				brcm,function = <2>; /* Alt5 */
++				de-active = <1>;
++				pixelclk-active = <1>;
+ 			};
+ 		};
+ 	};
+ 
+-	fragment@8 {
+-		target = <&audio>;
+-		__dormant__  {
+-		    brcm,disable-headphones;
++	fragment@1 {
++		target = <&dpi>;
++		__overlay__  {
++			pinctrl-0 = <&dpi_18bit_gpio0>;
+ 		};
+ 	};
+ 
+@@ -151,12 +70,5 @@
+ 		rgb888 = <&panel>, "bus-format:0=0x100a",
+ 			<&dpi_node>, "pinctrl-0:0=",<&dpi_gpio0>;
+ 		bus-format = <&panel>, "bus-format:0";
+-		backlight-gpio = <0>, "+2+3",
+-			<&backlight>, "gpios:4";
+-		backlight-pwm = <0>, "+4+5+6+7+8";
+-		backlight-pwm-chan = <&backlight_pwm>, "pwms:4";
+-		backlight-pwm-gpio = <&pwm_pins>, "brcm,pins:0";
+-		backlight-pwm-func = <&pwm_pins>, "brcm,function:0";
+-		backlight-def-brightness = <&backlight_pwm>, "default-brightness-level:0";
+ 	};
+ };
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-panel-overlay.dts
+@@ -0,0 +1,62 @@
++/*
++ * vc4-kms-dpi-panel-overlay.dts
++ * Support for any predefined DPI panel.
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "vc4-kms-dpi.dtsi"
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&panel>;
++		__dormant__  {
++			compatible = "innolux,at056tn53v1", "simple-panel";
++		};
++	};
++	fragment@1 {
++		target = <&panel>;
++		__dormant__  {
++			compatible = "ontat,yx700wv03", "simple-panel";
++		};
++	};
++
++	fragment@90 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
++		};
++	};
++	fragment@91 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_18bit_gpio0>;
++		};
++	};
++	fragment@92 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_gpio0>;
++		};
++	};
++	fragment@93 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_16bit_cpadhi_gpio0>;
++		};
++	};
++	fragment@94 {
++		target = <&dpi>;
++		__dormant__  {
++			pinctrl-0 = <&dpi_16bit_gpio0>;
++		};
++	};
++
++	__overrides__ {
++		at056tn53v1 = <0>, "+0+90";
++		kippah-7inch = <0>, "+1+91";
++	};
++};
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi
+@@ -0,0 +1,109 @@
++/*
++ * vc4-kms-dpi.dtsi
++ */
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	fragment@100 {
++		target-path = "/";
++		__overlay__ {
++			panel: panel {
++				port {
++					panel_in: endpoint {
++						remote-endpoint = <&dpi_out>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@101 {
++		target = <&dpi>;
++		dpi_node: __overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++
++			port {
++				dpi_out: endpoint {
++					remote-endpoint = <&panel_in>;
++				};
++			};
++		};
++	};
++
++	fragment@102 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight>;
++		};
++	};
++
++	fragment@103 {
++		target-path = "/";
++		__dormant__  {
++			backlight: backlight {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
++			};
++		};
++	};
++
++	fragment@104 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight_pwm>;
++		};
++	};
++
++	fragment@105 {
++		target-path = "/";
++		__dormant__  {
++			backlight_pwm: backlight_pwm {
++				compatible = "pwm-backlight";
++				brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
++				default-brightness-level = <16>;
++				pwms = <&pwm 0 200000>;
++			};
++		};
++	};
++
++	fragment@106 {
++		target = <&pwm>;
++		__dormant__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pwm_pins>;
++			assigned-clock-rates = <1000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@107 {
++		target = <&gpio>;
++		__dormant__ {
++			pwm_pins: pwm_pins {
++				brcm,pins = <18>;
++				brcm,function = <2>; /* Alt5 */
++			};
++		};
++	};
++
++	fragment@108 {
++		target = <&audio>;
++		__dormant__  {
++		    brcm,disable-headphones;
++		};
++	};
++
++	__overrides__ {
++		backlight-gpio = <0>, "+102+103",
++			<&backlight>, "gpios:4";
++		backlight-pwm = <0>, "+104+105+106+107+108";
++		backlight-pwm-chan = <&backlight_pwm>, "pwms:4";
++		backlight-pwm-gpio = <&pwm_pins>, "brcm,pins:0";
++		backlight-pwm-func = <&pwm_pins>, "brcm,function:0";
++		backlight-def-brightness = <&backlight_pwm>, "default-brightness-level:0";
++	};
++};
+--- a/arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-kippah-7inch-overlay.dts
+@@ -1,43 +1,26 @@
+ /*
+- * vc4-kms-v3d-overlay.dts
++ * vc4-kms-kippah-7inch-overlay.dts
+  */
+ 
+ /dts-v1/;
+ /plugin/;
+ 
+-#include <dt-bindings/pinctrl/bcm2835.h>
++#include "vc4-kms-dpi.dtsi"
+ 
+ / {
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target-path = "/";
+-		__overlay__ {
+-			panel: panel {
+-				compatible = "ontat,yx700wv03", "simple-panel";
+-
+-				port {
+-					panel_in: endpoint {
+-						remote-endpoint = <&dpi_out>;
+-					};
+-				};
+-			};
++		target = <&panel>;
++		__overlay__  {
++			compatible = "ontat,yx700wv03", "simple-panel";
+ 		};
+ 	};
+ 
+ 	fragment@1 {
+ 		target = <&dpi>;
+ 		__overlay__  {
+-			status = "okay";
+-
+-			pinctrl-names = "default";
+ 			pinctrl-0 = <&dpi_18bit_gpio0>;
+-
+-			port {
+-				dpi_out: endpoint@0 {
+-					remote-endpoint = <&panel_in>;
+-				};
+-			};
+ 		};
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0681-media-uapi-Document-format-MEDIA_BUS_FMT_RGB565_1X24.patch b/target/linux/bcm27xx/patches-5.15/950-0681-media-uapi-Document-format-MEDIA_BUS_FMT_RGB565_1X24.patch
new file mode 100644
index 0000000000..2563cdac60
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0681-media-uapi-Document-format-MEDIA_BUS_FMT_RGB565_1X24.patch
@@ -0,0 +1,60 @@
+From 434203412a66dba17e40ee40e0e9cde40b3a8016 Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Fri, 28 Jan 2022 17:37:43 -0600
+Subject: [PATCH] media: uapi: Document format
+ MEDIA_BUS_FMT_RGB565_1X24_CPADHI
+
+Add support for MEDIA_BUS_FMT_RGB565_1X24_CPADHI. This format is used
+by the Geekworm MZP280 panel which interfaces with the Raspberry Pi.
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+---
+ .../media/v4l/subdev-formats.rst              | 37 +++++++++++++++++++
+ 1 file changed, 37 insertions(+)
+
+--- a/Documentation/userspace-api/media/v4l/subdev-formats.rst
++++ b/Documentation/userspace-api/media/v4l/subdev-formats.rst
+@@ -624,6 +624,43 @@ The following tables list existing packe
+       - b\ :sub:`2`
+       - b\ :sub:`1`
+       - b\ :sub:`0`
++    * .. _MEDIA_BUS_FMT_RGB565_1X24_CPADHI:
++
++      - MEDIA_BUS_FMT_RGB565_1X24_CPADHI
++      - 0x1020
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      -
++      - 0
++      - 0
++      - 0
++      - r\ :sub:`4`
++      - r\ :sub:`3`
++      - r\ :sub:`2`
++      - r\ :sub:`1`
++      - r\ :sub:`0`
++      - 0
++      - 0
++      - g\ :sub:`5`
++      - g\ :sub:`4`
++      - g\ :sub:`3`
++      - g\ :sub:`2`
++      - g\ :sub:`1`
++      - g\ :sub:`0`
++      - 0
++      - 0
++      - 0
++      - b\ :sub:`4`
++      - b\ :sub:`3`
++      - b\ :sub:`2`
++      - b\ :sub:`1`
++      - b\ :sub:`0`
+     * .. _MEDIA-BUS-FMT-BGR565-2X8-BE:
+ 
+       - MEDIA_BUS_FMT_BGR565_2X8_BE
diff --git a/target/linux/bcm27xx/patches-5.15/950-0682-media-uapi-add-MEDIA_BUS_FMT_RGB565_1X24_CPADHI.patch b/target/linux/bcm27xx/patches-5.15/950-0682-media-uapi-add-MEDIA_BUS_FMT_RGB565_1X24_CPADHI.patch
new file mode 100644
index 0000000000..245fcfb8e7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0682-media-uapi-add-MEDIA_BUS_FMT_RGB565_1X24_CPADHI.patch
@@ -0,0 +1,31 @@
+From b27bc74f47f9e3ef6fce066b3430a6cb59c10909 Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Fri, 28 Jan 2022 17:38:40 -0600
+Subject: [PATCH] media: uapi: add MEDIA_BUS_FMT_RGB565_1X24_CPADHI
+
+Add the MEDIA_BUS_FMT_RGB565_1X24_CPADHI format used by the Geekworm
+MZP280 panel for the Raspberry Pi.
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+---
+ include/uapi/linux/media-bus-format.h | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/include/uapi/linux/media-bus-format.h
++++ b/include/uapi/linux/media-bus-format.h
+@@ -34,13 +34,14 @@
+ 
+ #define MEDIA_BUS_FMT_FIXED			0x0001
+ 
+-/* RGB - next is	0x1020 */
++/* RGB - next is	0x1021 */
+ #define MEDIA_BUS_FMT_RGB444_1X12		0x1016
+ #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE	0x1001
+ #define MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE	0x1002
+ #define MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE	0x1003
+ #define MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE	0x1004
+ #define MEDIA_BUS_FMT_RGB565_1X16		0x1017
++#define MEDIA_BUS_FMT_RGB565_1X24_CPADHI	0x1020
+ #define MEDIA_BUS_FMT_BGR565_2X8_BE		0x1005
+ #define MEDIA_BUS_FMT_BGR565_2X8_LE		0x1006
+ #define MEDIA_BUS_FMT_RGB565_2X8_BE		0x1007
diff --git a/target/linux/bcm27xx/patches-5.15/950-0683-drm-vc4-dpi-Support-DPI-interface-in-mode3-for-RGB56.patch b/target/linux/bcm27xx/patches-5.15/950-0683-drm-vc4-dpi-Support-DPI-interface-in-mode3-for-RGB56.patch
new file mode 100644
index 0000000000..52721d6e99
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0683-drm-vc4-dpi-Support-DPI-interface-in-mode3-for-RGB56.patch
@@ -0,0 +1,31 @@
+From 7ca1ee604c2269389ee00990dd8f7c375df3be06 Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Fri, 28 Jan 2022 17:39:54 -0600
+Subject: [PATCH] drm/vc4: dpi: Support DPI interface in mode3 for
+ RGB565
+
+Add support for the VC4 DPI driver to utilize DPI mode 3. This is
+defined here as xxxRRRRRxxGGGGGGxxxBBBBB:
+https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#parallel-display-interface-dpi
+
+This mode is required to use the Geekworm MZP280 DPI display.
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dpi.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_dpi.c
++++ b/drivers/gpu/drm/vc4/vc4_dpi.c
+@@ -191,6 +191,10 @@ static void vc4_dpi_encoder_enable(struc
+ 				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+ 						       DPI_FORMAT);
+ 				break;
++			case MEDIA_BUS_FMT_RGB565_1X24_CPADHI:
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_2,
++						       DPI_FORMAT);
++				break;
+ 			}
+ 		} else {
+ 			/* Default to 18bit if no connector found. */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0684-dt-bindings-vendor-prefixes-Add-Geekworm.patch b/target/linux/bcm27xx/patches-5.15/950-0684-dt-bindings-vendor-prefixes-Add-Geekworm.patch
new file mode 100644
index 0000000000..b6b4c657bf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0684-dt-bindings-vendor-prefixes-Add-Geekworm.patch
@@ -0,0 +1,23 @@
+From 37d1c9a12a969904f0fbc184fbc3a4b7dca4ad0f Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Fri, 28 Jan 2022 17:40:50 -0600
+Subject: [PATCH] dt-bindings: vendor-prefixes: Add Geekworm
+
+Add vendor prefix for Geekworm (https://geekworm.com).
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+---
+ Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
++++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
+@@ -439,6 +439,8 @@ patternProperties:
+     description: General Electric Company
+   "^geekbuying,.*":
+     description: GeekBuying
++  "^geekworm,.*":
++    description: Geekworm
+   "^gef,.*":
+     description: GE Fanuc Intelligent Platforms Embedded Systems, Inc.
+   "^GEFanuc,.*":
diff --git a/target/linux/bcm27xx/patches-5.15/950-0685-dt-bindings-display-simple-add-Geekworm-MZP280-Panel.patch b/target/linux/bcm27xx/patches-5.15/950-0685-dt-bindings-display-simple-add-Geekworm-MZP280-Panel.patch
new file mode 100644
index 0000000000..7af6d01324
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0685-dt-bindings-display-simple-add-Geekworm-MZP280-Panel.patch
@@ -0,0 +1,34 @@
+From 6d7856c5e8b0c1a074c587e11f1af7e1a15c94f6 Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Fri, 28 Jan 2022 17:41:18 -0600
+Subject: [PATCH] dt-bindings: display: simple: add Geekworm MZP280
+ Panel
+
+The Geekworm MZP280 panel is a 480x640 (portrait) panel with a
+capacitive touch interface and a 40 pin header meant to interface
+directly with the Raspberry Pi. The screen is 2.8 inches diagonally,
+and there appear to be at least 4 distinct versions all with the same
+panel timings.
+
+Timings were derived from drivers posted on the github located here:
+https://github.com/tianyoujian/MZDPI/tree/master/vga
+
+Additional details about this panel family can be found here:
+https://wiki.geekworm.com/2.8_inch_Touch_Screen_for_Pi_zero
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+---
+ .../devicetree/bindings/display/panel/panel-simple.yaml         | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
++++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+@@ -148,6 +148,8 @@ properties:
+       - frida,frd350h54004
+         # FriendlyELEC HD702E 800x1280 LCD panel
+       - friendlyarm,hd702e
++        # Geekworm MZP280 2.8" 480x640 LCD panel with capacitive touch
++      - geekworm,mzp280
+         # GiantPlus GPG48273QS5 4.3" (480x272) WQVGA TFT LCD panel
+       - giantplus,gpg48273qs5
+         # GiantPlus GPM940B0 3.0" QVGA TFT LCD panel
diff --git a/target/linux/bcm27xx/patches-5.15/950-0686-drm-panel-simple-add-Geekworm-MZP280-Panel.patch b/target/linux/bcm27xx/patches-5.15/950-0686-drm-panel-simple-add-Geekworm-MZP280-Panel.patch
new file mode 100644
index 0000000000..b595e19dd6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0686-drm-panel-simple-add-Geekworm-MZP280-Panel.patch
@@ -0,0 +1,58 @@
+From 561cf49758e433a5ae21c10ceaa05a6e4c52e408 Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Fri, 28 Jan 2022 17:42:12 -0600
+Subject: [PATCH] drm/panel: simple: add Geekworm MZP280 Panel
+
+Add support for the Geekworm MZP280 Panel
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+Acked-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/panel/panel-simple.c | 29 ++++++++++++++++++++++++++++
+ 1 file changed, 29 insertions(+)
+
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -2321,6 +2321,32 @@ static const struct panel_desc friendlya
+ 	},
+ };
+ 
++static const struct drm_display_mode geekworm_mzp280_mode = {
++	.clock = 32000,
++	.hdisplay = 480,
++	.hsync_start = 480 + 41,
++	.hsync_end = 480 + 41 + 20,
++	.htotal = 480 + 41 + 20 + 60,
++	.vdisplay = 640,
++	.vsync_start = 640 + 5,
++	.vsync_end = 640 + 5 + 10,
++	.vtotal = 640 + 5 + 10 + 10,
++	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
++};
++
++static const struct panel_desc geekworm_mzp280 = {
++	.modes = &geekworm_mzp280_mode,
++	.num_modes = 1,
++	.bpc = 6,
++	.size = {
++		.width = 47,
++		.height = 61,
++	},
++	.bus_format = MEDIA_BUS_FMT_RGB565_1X24_CPADHI,
++	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
++	.connector_type = DRM_MODE_CONNECTOR_DPI,
++};
++
+ static const struct drm_display_mode giantplus_gpg482739qs5_mode = {
+ 	.clock = 9000,
+ 	.hdisplay = 480,
+@@ -4701,6 +4727,9 @@ static const struct of_device_id platfor
+ 		.compatible = "friendlyarm,hd702e",
+ 		.data = &friendlyarm_hd702e,
+ 	}, {
++		.compatible = "geekworm,mzp280",
++		.data = &geekworm_mzp280,
++	}, {
+ 		.compatible = "giantplus,gpg482739qs5",
+ 		.data = &giantplus_gpg482739qs5
+ 	}, {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0687-overlays-README-Deprecate-vc4-kms-kippah-7inch.patch b/target/linux/bcm27xx/patches-5.15/950-0687-overlays-README-Deprecate-vc4-kms-kippah-7inch.patch
new file mode 100644
index 0000000000..239f49ba96
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0687-overlays-README-Deprecate-vc4-kms-kippah-7inch.patch
@@ -0,0 +1,31 @@
+From 242dda559ca7f40342fb4266c3114e4e1d1d6269 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 2 Feb 2022 09:11:20 +0000
+Subject: [PATCH] overlays: README: Deprecate vc4-kms-kippah-7inch
+
+The vc4-kms-kippah-7inch overlay has been replaced by the container
+overlay vc4-kms-dpi-panel, using the "kippah-7inch" parameter. The
+original overlay has been retained for now to avoid breaking
+existing installations, but that doesn't make it any less deprecated,
+so update the README accordingly.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3737,10 +3737,8 @@ Params: <None>
+ 
+ 
+ Name:   vc4-kms-kippah-7inch
+-Info:   Enable the Adafruit DPI Kippah with the 7" Ontat panel attached.
+-        Requires vc4-kms-v3d to be loaded.
+-Load:   dtoverlay=vc4-kms-kippah-7inch
+-Params: <None>
++Info:   This overlay is now deprecated - see vc4-kms-dpi-panel,kippah-7inch
++Load:   <Deprecated>
+ 
+ 
+ Name:   vc4-kms-v3d
diff --git a/target/linux/bcm27xx/patches-5.15/950-0688-drm-panel-Add-and-initialise-an-orientation-field-to.patch b/target/linux/bcm27xx/patches-5.15/950-0688-drm-panel-Add-and-initialise-an-orientation-field-to.patch
new file mode 100644
index 0000000000..f87fc339bd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0688-drm-panel-Add-and-initialise-an-orientation-field-to.patch
@@ -0,0 +1,89 @@
+From a2ce322776832848b320ece1aa7e3485bfe4b5f3 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 1 Feb 2022 12:20:20 +0000
+Subject: [PATCH] drm/panel: Add and initialise an orientation field to
+ drm_panel
+
+Current usage of drm_connector_set_panel_orientation is from a panel's
+get_modes call. However if the panel orientation property doesn't
+exist on the connector at this point, then drm_mode_object triggers
+WARNs as the connector is already registered.
+
+Add an orientation variable to struct drm_panel and initialise it from
+drm_panel_init.
+panel_bridge_attach can then create the property before the connector
+is registered.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/bridge/panel.c |  4 ++++
+ drivers/gpu/drm/drm_panel.c    | 15 ++++++++++-----
+ include/drm/drm_panel.h        |  8 ++++++++
+ 3 files changed, 22 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/bridge/panel.c
++++ b/drivers/gpu/drm/bridge/panel.c
+@@ -79,6 +79,10 @@ static int panel_bridge_attach(struct dr
+ 		return ret;
+ 	}
+ 
++	/* set up connector's "panel orientation" property */
++	drm_connector_set_panel_orientation(&panel_bridge->connector,
++					    panel_bridge->panel->orientation);
++
+ 	drm_connector_attach_encoder(&panel_bridge->connector,
+ 					  bridge->encoder);
+ 
+--- a/drivers/gpu/drm/drm_panel.c
++++ b/drivers/gpu/drm/drm_panel.c
+@@ -61,6 +61,9 @@ void drm_panel_init(struct drm_panel *pa
+ 	panel->dev = dev;
+ 	panel->funcs = funcs;
+ 	panel->connector_type = connector_type;
++
++	panel->orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
++	of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
+ }
+ EXPORT_SYMBOL(drm_panel_init);
+ 
+@@ -289,16 +292,18 @@ int of_drm_get_panel_orientation(const s
+ 	if (ret < 0)
+ 		return ret;
+ 
+-	if (rotation == 0)
++	if (rotation == 0) {
+ 		*orientation = DRM_MODE_PANEL_ORIENTATION_NORMAL;
+-	else if (rotation == 90)
++	} else if (rotation == 90) {
+ 		*orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP;
+-	else if (rotation == 180)
++	} else if (rotation == 180) {
+ 		*orientation = DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
+-	else if (rotation == 270)
++	} else if (rotation == 270) {
+ 		*orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP;
+-	else
++	} else {
++		DRM_ERROR("%pOF: invalid orientation %d\n", np, ret);
+ 		return -EINVAL;
++	}
+ 
+ 	return 0;
+ }
+--- a/include/drm/drm_panel.h
++++ b/include/drm/drm_panel.h
+@@ -166,6 +166,14 @@ struct drm_panel {
+ 	int connector_type;
+ 
+ 	/**
++	 * @orientation:
++	 *
++	 * Panel orientation at initialisation. This is used to initialise the
++	 * drm_connector property for panel orientation.
++	 */
++	enum drm_panel_orientation orientation;
++
++	/**
+ 	 * @list:
+ 	 *
+ 	 * Panel entry in registry.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0689-drm-panel-simple-Remove-custom-handling-of-orientati.patch b/target/linux/bcm27xx/patches-5.15/950-0689-drm-panel-simple-Remove-custom-handling-of-orientati.patch
new file mode 100644
index 0000000000..5104067843
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0689-drm-panel-simple-Remove-custom-handling-of-orientati.patch
@@ -0,0 +1,48 @@
+From 4c3df24cea00ca3973134f4e542cee1d501c1a88 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 1 Feb 2022 12:24:51 +0000
+Subject: [PATCH] drm/panel: simple: Remove custom handling of
+ orientation
+
+Panel orientation is now handled by the drm_panel and
+panel_bridge frameworks, so remove the custom handling.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-simple.c | 11 -----------
+ 1 file changed, 11 deletions(-)
+
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -195,8 +195,6 @@ struct panel_simple {
+ 	struct edid *edid;
+ 
+ 	struct drm_display_mode override_mode;
+-
+-	enum drm_panel_orientation orientation;
+ };
+ 
+ static inline struct panel_simple *to_panel_simple(struct drm_panel *panel)
+@@ -533,9 +531,6 @@ static int panel_simple_get_modes(struct
+ 	/* add hard-coded panel modes */
+ 	num += panel_simple_get_non_edid_modes(p, connector);
+ 
+-	/* set up connector's "panel orientation" property */
+-	drm_connector_set_panel_orientation(connector, p->orientation);
+-
+ 	return num;
+ }
+ 
+@@ -702,12 +697,6 @@ static int panel_simple_probe(struct dev
+ 		return err;
+ 	}
+ 
+-	err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
+-	if (err) {
+-		dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
+-		return err;
+-	}
+-
+ 	ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
+ 	if (ddc) {
+ 		panel->ddc = of_find_i2c_adapter_by_node(ddc);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0690-overlays-Add-rotate-property-to-vc4-kms-dpi-panel.patch b/target/linux/bcm27xx/patches-5.15/950-0690-overlays-Add-rotate-property-to-vc4-kms-dpi-panel.patch
new file mode 100644
index 0000000000..c9c9e46d36
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0690-overlays-Add-rotate-property-to-vc4-kms-dpi-panel.patch
@@ -0,0 +1,49 @@
+From 4aad06862bbd0a9871b747fbc7decf94a4815a57 Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Wed, 2 Feb 2022 10:42:00 -0600
+Subject: [PATCH] overlays: Add rotate property to vc4-kms-dpi-panel
+
+Allow a user to specify the panel rotation in devicetree as 0, 90,
+180, or 270 by setting a parameter.
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+---
+ arch/arm/boot/dts/overlays/README           | 2 ++
+ arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi | 2 ++
+ 2 files changed, 4 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3673,6 +3673,7 @@ Params: clock-frequency         Display
+         backlight-def-brightness
+                                 Set the default brightness. Normal range 1-16.
+                                 (default 16).
++        rotate                  Display rotation {0,90,180,270} (default 0)
+ 
+ 
+ Name:   vc4-kms-dpi-panel
+@@ -3700,6 +3701,7 @@ Params: at056tn53v1             Enable a
+         backlight-def-brightness
+                                 Set the default brightness. Normal range 1-16.
+                                 (default 16).
++        rotate                  Display rotation {0,90,180,270} (default 0)
+ 
+ 
+ Name:   vc4-kms-dsi-7inch
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi.dtsi
+@@ -10,6 +10,7 @@
+ 		target-path = "/";
+ 		__overlay__ {
+ 			panel: panel {
++				rotation = <0>;
+ 				port {
+ 					panel_in: endpoint {
+ 						remote-endpoint = <&dpi_out>;
+@@ -105,5 +106,6 @@
+ 		backlight-pwm-gpio = <&pwm_pins>, "brcm,pins:0";
+ 		backlight-pwm-func = <&pwm_pins>, "brcm,function:0";
+ 		backlight-def-brightness = <&backlight_pwm>, "default-brightness-level:0";
++		rotate = <&panel>, "rotation:0";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0691-overlays-Add-Geekworm-mzp280-to-vc4-kms-dpi-panel.patch b/target/linux/bcm27xx/patches-5.15/950-0691-overlays-Add-Geekworm-mzp280-to-vc4-kms-dpi-panel.patch
new file mode 100644
index 0000000000..b83e9bb52c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0691-overlays-Add-Geekworm-mzp280-to-vc4-kms-dpi-panel.patch
@@ -0,0 +1,46 @@
+From 152f82d69308b96b0e838918387fa70c26a52454 Mon Sep 17 00:00:00 2001
+From: Chris Morgan <macromorgan@hotmail.com>
+Date: Wed, 2 Feb 2022 10:43:32 -0600
+Subject: [PATCH] overlays: Add Geekworm mzp280 to vc4-kms-dpi-panel
+
+Add support for the Geekworm mzp280 DPI panel to the generic
+vc4-kms-dpi-panel overlay.
+
+Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
+---
+ arch/arm/boot/dts/overlays/README                        | 1 +
+ arch/arm/boot/dts/overlays/vc4-kms-dpi-panel-overlay.dts | 7 +++++++
+ 2 files changed, 8 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3682,6 +3682,7 @@ Info:   Enable a preconfigured KMS DPI p
+ Load:   dtoverlay=vc4-kms-dpi-panel,<param>=<val>
+ Params: at056tn53v1             Enable an Innolux 5.6in VGA TFT
+         kippah-7inch            Enable an Adafruit Kippah with 7inch panel.
++        mzp280                  Enable a Geekworm MZP280 panel.
+         backlight-gpio          Defines a GPIO to be used for backlight control
+                                 (default of none).
+         backlight-pwm           Defines a PWM channel to be used for backlight
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-panel-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-panel-overlay.dts
+@@ -23,6 +23,12 @@
+ 			compatible = "ontat,yx700wv03", "simple-panel";
+ 		};
+ 	};
++	fragment@2 {
++		target = <&panel>;
++		__dormant__  {
++			compatible = "geekworm,mzp280", "simple-panel";
++		};
++	};
+ 
+ 	fragment@90 {
+ 		target = <&dpi>;
+@@ -58,5 +64,6 @@
+ 	__overrides__ {
+ 		at056tn53v1 = <0>, "+0+90";
+ 		kippah-7inch = <0>, "+1+91";
++		mzp280 = <0>, "+2+93";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0692-drm-panel-Add-panel-driver-for-Ilitek-ILI9806E-panel.patch b/target/linux/bcm27xx/patches-5.15/950-0692-drm-panel-Add-panel-driver-for-Ilitek-ILI9806E-panel.patch
new file mode 100644
index 0000000000..a0f6be2893
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0692-drm-panel-Add-panel-driver-for-Ilitek-ILI9806E-panel.patch
@@ -0,0 +1,537 @@
+From fa01d26c4572ed40dfe867d3c488abcb1d9a9db4 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 5 Jan 2022 19:14:48 +0000
+Subject: [PATCH] drm/panel: Add panel driver for Ilitek ILI9806E panel
+
+The Ilitek ILI9806E driver is used in the Pimoroni HyperPixel4
+and potentially other displays. Whilst it can support multiple
+interfaces, this driver only accounts for SPI configuration and
+DPI video data.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/Kconfig                 |  11 +
+ drivers/gpu/drm/panel/Makefile                |   1 +
+ drivers/gpu/drm/panel/panel-ilitek-ili9806e.c | 486 ++++++++++++++++++
+ 3 files changed, 498 insertions(+)
+ create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9806e.c
+
+--- a/drivers/gpu/drm/panel/Kconfig
++++ b/drivers/gpu/drm/panel/Kconfig
+@@ -139,6 +139,17 @@ config DRM_PANEL_ILITEK_ILI9341
+ 	  QVGA (240x320) RGB panels. support serial & parallel rgb
+ 	  interface.
+ 
++config DRM_PANEL_ILITEK_ILI9806E
++	tristate "Ilitek ILI9806E-based panels"
++	depends on OF && SPI
++	depends on DRM_KMS_HELPER
++	depends on DRM_KMS_CMA_HELPER
++	depends on BACKLIGHT_CLASS_DEVICE
++	select DRM_MIPI_DBI
++	help
++	  Say Y if you want to enable support for panels based on the
++	  Ilitek ILI9806e controller.
++
+ config DRM_PANEL_ILITEK_ILI9881C
+ 	tristate "Ilitek ILI9881C-based panels"
+ 	depends on OF
+--- a/drivers/gpu/drm/panel/Makefile
++++ b/drivers/gpu/drm/panel/Makefile
+@@ -12,6 +12,7 @@ obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA
+ obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o
+ obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
+ obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o
++obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9806E) += panel-ilitek-ili9806e.o
+ obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
+ obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o
+ obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o
+--- /dev/null
++++ b/drivers/gpu/drm/panel/panel-ilitek-ili9806e.c
+@@ -0,0 +1,486 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * Ilitek ILI9806E TFT LCD drm_panel driver.
++ *
++ * Copyright (C) 2022 Raspberry Pi Ltd
++ *
++ * Derived from drivers/drm/gpu/panel/panel-sitronix-st7789v.c
++ * Copyright (C) 2017 Free Electrons
++ */
++
++#include <drm/drm_modes.h>
++#include <drm/drm_panel.h>
++
++#include <linux/bitops.h>
++#include <linux/gpio/consumer.h>
++#include <linux/media-bus-format.h>
++#include <linux/module.h>
++#include <linux/of_device.h>
++#include <linux/regmap.h>
++#include <linux/regulator/consumer.h>
++#include <linux/spi/spi.h>
++
++#include <video/mipi_display.h>
++#include <video/of_videomode.h>
++#include <video/videomode.h>
++
++struct ili9806 {
++	struct drm_panel panel;
++	struct spi_device *spi;
++	struct gpio_desc *reset;
++	struct regulator *power;
++	u32 bus_format;
++};
++
++#define ILI9806_DATA		BIT(8)
++
++#define ILI9806_MAX_MSG_LEN	6
++
++struct ili9806e_msg {
++	unsigned int len;
++	u16 msg[ILI9806_MAX_MSG_LEN];
++};
++
++#define ILI9806_SET_PAGE(page)	\
++	{				\
++		.len = 6,		\
++		.msg = {		\
++			0xFF,			\
++			ILI9806_DATA | 0xFF,	\
++			ILI9806_DATA | 0x98,	\
++			ILI9806_DATA | 0x06,	\
++			ILI9806_DATA | 0x04,	\
++			ILI9806_DATA | (page)	\
++		},				\
++	}
++
++#define ILI9806_SET_REG_PARAM(reg, data)	\
++	{					\
++		.len = 2,			\
++		.msg = {			\
++			(reg),			\
++			ILI9806_DATA | (data),	\
++		},				\
++	}
++
++#define ILI9806_SET_REG(reg)	\
++	{				\
++		.len = 1,		\
++		.msg = { (reg) },		\
++	}
++
++static const struct ili9806e_msg panel_init[] = {
++	ILI9806_SET_PAGE(1),
++
++	/* interface mode
++	 *   SEPT_SDIO = 0 (spi interface transfer through SDA pin)
++	 *   SDO_STATUS = 1 (always output, but without output tri-state)
++	 */
++	ILI9806_SET_REG_PARAM(0x08, 0x10),
++	/* display control
++	 * VSPL = 1 (vertical sync polarity)
++	 * HSPL = 0 (horizontal sync polarity)
++	 * DPL = 0 (PCLK polarity)
++	 * EPL = 1 (data enable polarity)
++	 */
++	ILI9806_SET_REG_PARAM(0x21, 0x0d),
++	/* resolution control (0x02 = 480x800) */
++	ILI9806_SET_REG_PARAM(0x30, 0x02),
++	/* display inversion control (0x00 = column inversion) */
++	ILI9806_SET_REG_PARAM(0x31, 0x00),
++	/* power control
++	 *  EXB1T = 0 (internal charge pump)
++	 *  EXT_CPCK_SEL = 1 (pump clock control signal = output 2 x waveform)
++	 *  BT = 0 (DDVDH / DDVDL voltage = VCI x 2 / VCI x -2)
++	 */
++	ILI9806_SET_REG_PARAM(0x40, 0x10),
++	/* power control
++	 *  DDVDH_CLP = 5.6 (DDVDH clamp leve)
++	 *  DDVDL_CLP = -5.6 (DDVDL clamp leve)
++	 */
++	ILI9806_SET_REG_PARAM(0x41, 0x55),
++	/* power control
++	 *  VGH_CP = 2DDVDH - DDVDL (step up factor for VGH)
++	 *  VGL_CP = DDVDL + VCL - VCIP (step up factor for VGL)
++	 */
++	ILI9806_SET_REG_PARAM(0x42, 0x02),
++	/* power control
++	 *  VGH_CLPEN = 0 (disable VGH clamp level)
++	 *  VGH_CLP = 9 (15.0 VGH clamp level - but this is disabled so not used?)
++	 */
++	ILI9806_SET_REG_PARAM(0x43, 0x84),
++	/* power control
++	 *  VGL_CLPEN = 0 (disable VGL clamp level)
++	 *  VGL_CLP = 9 (-11.0 VGL clamp level - but this is disabled so not used?)
++	 */
++	ILI9806_SET_REG_PARAM(0x44, 0x84),
++
++	/* power control
++	 *  VREG1OUT voltage for positive gamma?
++	 */
++	ILI9806_SET_REG_PARAM(0x50, 0x78),
++	/* power control
++	 *  VREG2OUT voltage for negative gamma?
++	 */
++	ILI9806_SET_REG_PARAM(0x51, 0x78),
++
++	ILI9806_SET_REG_PARAM(0x52, 0x00),
++	ILI9806_SET_REG_PARAM(0x53, 0x77),
++	ILI9806_SET_REG_PARAM(0x57, 0x60),
++	ILI9806_SET_REG_PARAM(0x60, 0x07),
++	ILI9806_SET_REG_PARAM(0x61, 0x00),
++	ILI9806_SET_REG_PARAM(0x62, 0x08),
++	ILI9806_SET_REG_PARAM(0x63, 0x00),
++	ILI9806_SET_REG_PARAM(0xA0, 0x00),
++	ILI9806_SET_REG_PARAM(0xA1, 0x07),
++	ILI9806_SET_REG_PARAM(0xA2, 0x0C),
++	ILI9806_SET_REG_PARAM(0xA3, 0x0B),
++	ILI9806_SET_REG_PARAM(0xA4, 0x03),
++	ILI9806_SET_REG_PARAM(0xA5, 0x07),
++	ILI9806_SET_REG_PARAM(0xA6, 0x06),
++	ILI9806_SET_REG_PARAM(0xA7, 0x04),
++	ILI9806_SET_REG_PARAM(0xA8, 0x08),
++	ILI9806_SET_REG_PARAM(0xA9, 0x0C),
++	ILI9806_SET_REG_PARAM(0xAA, 0x13),
++	ILI9806_SET_REG_PARAM(0xAB, 0x06),
++	ILI9806_SET_REG_PARAM(0xAC, 0x0D),
++	ILI9806_SET_REG_PARAM(0xAD, 0x19),
++	ILI9806_SET_REG_PARAM(0xAE, 0x10),
++	ILI9806_SET_REG_PARAM(0xAF, 0x00),
++	/* negative gamma control
++	 * set the gray scale voltage to adjust the gamma characteristics of the panel
++	 */
++	ILI9806_SET_REG_PARAM(0xC0, 0x00),
++	ILI9806_SET_REG_PARAM(0xC1, 0x07),
++	ILI9806_SET_REG_PARAM(0xC2, 0x0C),
++	ILI9806_SET_REG_PARAM(0xC3, 0x0B),
++	ILI9806_SET_REG_PARAM(0xC4, 0x03),
++	ILI9806_SET_REG_PARAM(0xC5, 0x07),
++	ILI9806_SET_REG_PARAM(0xC6, 0x07),
++	ILI9806_SET_REG_PARAM(0xC7, 0x04),
++	ILI9806_SET_REG_PARAM(0xC8, 0x08),
++	ILI9806_SET_REG_PARAM(0xC9, 0x0C),
++	ILI9806_SET_REG_PARAM(0xCA, 0x13),
++	ILI9806_SET_REG_PARAM(0xCB, 0x06),
++	ILI9806_SET_REG_PARAM(0xCC, 0x0D),
++	ILI9806_SET_REG_PARAM(0xCD, 0x18),
++	ILI9806_SET_REG_PARAM(0xCE, 0x10),
++	ILI9806_SET_REG_PARAM(0xCF, 0x00),
++
++	ILI9806_SET_PAGE(6),
++
++	ILI9806_SET_REG_PARAM(0x00, 0x20),
++	ILI9806_SET_REG_PARAM(0x01, 0x0A),
++	ILI9806_SET_REG_PARAM(0x02, 0x00),
++	ILI9806_SET_REG_PARAM(0x03, 0x00),
++	ILI9806_SET_REG_PARAM(0x04, 0x01),
++	ILI9806_SET_REG_PARAM(0x05, 0x01),
++	ILI9806_SET_REG_PARAM(0x06, 0x98),
++	ILI9806_SET_REG_PARAM(0x07, 0x06),
++	ILI9806_SET_REG_PARAM(0x08, 0x01),
++	ILI9806_SET_REG_PARAM(0x09, 0x80),
++	ILI9806_SET_REG_PARAM(0x0A, 0x00),
++	ILI9806_SET_REG_PARAM(0x0B, 0x00),
++	ILI9806_SET_REG_PARAM(0x0C, 0x01),
++	ILI9806_SET_REG_PARAM(0x0D, 0x01),
++	ILI9806_SET_REG_PARAM(0x0E, 0x00),
++	ILI9806_SET_REG_PARAM(0x0F, 0x00),
++	ILI9806_SET_REG_PARAM(0x10, 0xF0),
++	ILI9806_SET_REG_PARAM(0x11, 0xF4),
++	ILI9806_SET_REG_PARAM(0x12, 0x01),
++	ILI9806_SET_REG_PARAM(0x13, 0x00),
++	ILI9806_SET_REG_PARAM(0x14, 0x00),
++	ILI9806_SET_REG_PARAM(0x15, 0xC0),
++	ILI9806_SET_REG_PARAM(0x16, 0x08),
++	ILI9806_SET_REG_PARAM(0x17, 0x00),
++	ILI9806_SET_REG_PARAM(0x18, 0x00),
++	ILI9806_SET_REG_PARAM(0x19, 0x00),
++	ILI9806_SET_REG_PARAM(0x1A, 0x00),
++	ILI9806_SET_REG_PARAM(0x1B, 0x00),
++	ILI9806_SET_REG_PARAM(0x1C, 0x00),
++	ILI9806_SET_REG_PARAM(0x1D, 0x00),
++	ILI9806_SET_REG_PARAM(0x20, 0x01),
++	ILI9806_SET_REG_PARAM(0x21, 0x23),
++	ILI9806_SET_REG_PARAM(0x22, 0x45),
++	ILI9806_SET_REG_PARAM(0x23, 0x67),
++	ILI9806_SET_REG_PARAM(0x24, 0x01),
++	ILI9806_SET_REG_PARAM(0x25, 0x23),
++	ILI9806_SET_REG_PARAM(0x26, 0x45),
++	ILI9806_SET_REG_PARAM(0x27, 0x67),
++	ILI9806_SET_REG_PARAM(0x30, 0x11),
++	ILI9806_SET_REG_PARAM(0x31, 0x11),
++	ILI9806_SET_REG_PARAM(0x32, 0x00),
++	ILI9806_SET_REG_PARAM(0x33, 0xEE),
++	ILI9806_SET_REG_PARAM(0x34, 0xFF),
++	ILI9806_SET_REG_PARAM(0x35, 0xBB),
++	ILI9806_SET_REG_PARAM(0x36, 0xAA),
++	ILI9806_SET_REG_PARAM(0x37, 0xDD),
++	ILI9806_SET_REG_PARAM(0x38, 0xCC),
++	ILI9806_SET_REG_PARAM(0x39, 0x66),
++	ILI9806_SET_REG_PARAM(0x3A, 0x77),
++	ILI9806_SET_REG_PARAM(0x3B, 0x22),
++	ILI9806_SET_REG_PARAM(0x3C, 0x22),
++	ILI9806_SET_REG_PARAM(0x3D, 0x22),
++	ILI9806_SET_REG_PARAM(0x3E, 0x22),
++	ILI9806_SET_REG_PARAM(0x3F, 0x22),
++	ILI9806_SET_REG_PARAM(0x40, 0x22),
++	/* register doesn't exist on page 6? */
++	ILI9806_SET_REG_PARAM(0x52, 0x10),
++	/* doesn't make sense, not valid according to datasheet */
++	ILI9806_SET_REG_PARAM(0x53, 0x10),
++	/* doesn't make sense, not valid according to datasheet */
++	ILI9806_SET_REG_PARAM(0x54, 0x13),
++
++	ILI9806_SET_PAGE(7),
++
++	/* enable VREG */
++	ILI9806_SET_REG_PARAM(0x18, 0x1D),
++	/* enable VGL_REG */
++	ILI9806_SET_REG_PARAM(0x17, 0x22),
++	/* register doesn't exist on page 7? */
++	ILI9806_SET_REG_PARAM(0x02, 0x77),
++	/* register doesn't exist on page 7? */
++	ILI9806_SET_REG_PARAM(0x26, 0xB2),
++	/* register doesn't exist on page 7? */
++	ILI9806_SET_REG_PARAM(0xE1, 0x79),
++
++	ILI9806_SET_PAGE(0),
++
++	ILI9806_SET_REG_PARAM(MIPI_DCS_SET_PIXEL_FORMAT,
++			      MIPI_DCS_PIXEL_FMT_18BIT << 4),
++	ILI9806_SET_REG_PARAM(MIPI_DCS_SET_TEAR_ON, 0x00),
++	ILI9806_SET_REG(MIPI_DCS_EXIT_SLEEP_MODE),
++};
++
++#define NUM_INIT_REGS ARRAY_SIZE(panel_init)
++
++static inline struct ili9806 *panel_to_ili9806(struct drm_panel *panel)
++{
++	return container_of(panel, struct ili9806, panel);
++}
++
++static int ili9806_write_msg(struct ili9806 *ctx, const struct ili9806e_msg *msg)
++{
++	struct spi_transfer xfer = { };
++	struct spi_message spi;
++	//u16 txbuf[] = { msg->, ILI9806_DATA | data };
++
++	spi_message_init(&spi);
++
++	xfer.tx_buf = msg->msg;
++	xfer.bits_per_word = 9;
++	xfer.len = sizeof(u16) * msg->len;
++
++	spi_message_add_tail(&xfer, &spi);
++	return spi_sync(ctx->spi, &spi);
++}
++
++static int ili9806e_write_msg_list(struct ili9806 *ctx,
++				   const struct ili9806e_msg msgs[],
++				   unsigned int num_msgs)
++{
++	int ret, i;
++
++	for (i = 0; i < num_msgs; i++) {
++		ret = ili9806_write_msg(ctx, &msgs[i]);
++		if (ret)
++			break;
++	}
++
++	return ret;
++}
++
++static const struct drm_display_mode ili9806e_480x800_mode = {
++	.clock = 32000,
++	.hdisplay = 480,
++	.hsync_start = 480 + 10,
++	.hsync_end = 480 + 10 + 16,
++	.htotal = 480 + 10 + 16 + 59,
++	.vdisplay = 800,
++	.vsync_start = 800 + 15,
++	.vsync_end = 800 + 15 + 113,
++	.vtotal = 800 + 15 + 113 + 15,
++	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
++};
++
++static int ili9806_get_modes(struct drm_panel *panel,
++			     struct drm_connector *connector)
++{
++	struct ili9806 *ctx = panel_to_ili9806(panel);
++	struct drm_display_mode *mode;
++
++	mode = drm_mode_duplicate(connector->dev, &ili9806e_480x800_mode);
++	if (!mode) {
++		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
++			ili9806e_480x800_mode.hdisplay,
++			ili9806e_480x800_mode.vdisplay,
++			drm_mode_vrefresh(&ili9806e_480x800_mode));
++		return -ENOMEM;
++	}
++
++	drm_mode_set_name(mode);
++
++	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
++	drm_mode_probed_add(connector, mode);
++
++	connector->display_info.width_mm = 61;
++	connector->display_info.height_mm = 103;
++	drm_display_info_set_bus_formats(&connector->display_info,
++					 &ctx->bus_format, 1);
++	connector->display_info.bus_flags =
++					DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE;
++
++	return 1;
++}
++
++static int ili9806_prepare(struct drm_panel *panel)
++{
++	struct ili9806 *ctx = panel_to_ili9806(panel);
++	int ret;
++
++	ret = regulator_enable(ctx->power);
++	if (ret)
++		return ret;
++
++	ret = ili9806e_write_msg_list(ctx, panel_init, NUM_INIT_REGS);
++
++	return ret;
++}
++
++static int ili9806_enable(struct drm_panel *panel)
++{
++	struct ili9806 *ctx = panel_to_ili9806(panel);
++	const struct ili9806e_msg msg = ILI9806_SET_REG(MIPI_DCS_SET_DISPLAY_ON);
++	int ret;
++
++	ret = ili9806_write_msg(ctx, &msg);
++
++	return ret;
++}
++
++static int ili9806_disable(struct drm_panel *panel)
++{
++	struct ili9806 *ctx = panel_to_ili9806(panel);
++	const struct ili9806e_msg msg = ILI9806_SET_REG(MIPI_DCS_SET_DISPLAY_OFF);
++	int ret;
++
++	ret = ili9806_write_msg(ctx, &msg);
++
++	return ret;
++}
++
++static int ili9806_unprepare(struct drm_panel *panel)
++{
++	struct ili9806 *ctx = panel_to_ili9806(panel);
++	const struct ili9806e_msg msg = ILI9806_SET_REG(MIPI_DCS_ENTER_SLEEP_MODE);
++	int ret;
++
++	ret = ili9806_write_msg(ctx, &msg);
++
++	return ret;
++}
++
++static const struct drm_panel_funcs ili9806_drm_funcs = {
++	.disable	= ili9806_disable,
++	.enable		= ili9806_enable,
++	.get_modes	= ili9806_get_modes,
++	.prepare	= ili9806_prepare,
++	.unprepare	= ili9806_unprepare,
++};
++
++static const struct of_device_id ili9806_of_match[] = {
++	{	.compatible = "txw,txw397017s2",
++		.data = (void *)MEDIA_BUS_FMT_RGB888_1X24,
++	}, {
++		.compatible = "pimoroni,hyperpixel4",
++		.data = (void *)MEDIA_BUS_FMT_RGB666_1X24_CPADHI,
++	}, {
++		.compatible = "ilitek,ili9806e",
++		.data = (void *)MEDIA_BUS_FMT_RGB888_1X24,
++	}, {
++		/* sentinel */
++	}
++};
++MODULE_DEVICE_TABLE(of, ili9806_of_match);
++
++static int ili9806_probe(struct spi_device *spi)
++{
++	const struct ili9806e_msg panel_reset[] = {
++		ILI9806_SET_PAGE(0),
++		ILI9806_SET_REG_PARAM(0x01, 0x00)
++	};
++	const struct of_device_id *id;
++	struct ili9806 *ctx;
++	int ret;
++
++	ctx = devm_kzalloc(&spi->dev, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++
++	id = of_match_node(ili9806_of_match, spi->dev.of_node);
++	if (!id)
++		return -ENODEV;
++
++	ctx->bus_format = (u32)id->data;
++
++	spi_set_drvdata(spi, ctx);
++	ctx->spi = spi;
++
++	drm_panel_init(&ctx->panel, &spi->dev, &ili9806_drm_funcs,
++		       DRM_MODE_CONNECTOR_DPI);
++
++	ctx->power = devm_regulator_get(&spi->dev, "power");
++	if (IS_ERR(ctx->power))
++		return PTR_ERR(ctx->power);
++
++	ctx->reset = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_LOW);
++	if (IS_ERR(ctx->reset)) {
++		dev_err(&spi->dev, "Couldn't get our reset line\n");
++		return PTR_ERR(ctx->reset);
++	}
++
++	/* Soft reset */
++	ili9806e_write_msg_list(ctx, panel_reset, ARRAY_SIZE(panel_reset));
++	msleep(200);
++
++	ret = drm_panel_of_backlight(&ctx->panel);
++	if (ret)
++		return ret;
++
++	drm_panel_add(&ctx->panel);
++
++	return 0;
++}
++
++static int ili9806_remove(struct spi_device *spi)
++{
++	struct ili9806 *ctx = spi_get_drvdata(spi);
++
++	drm_panel_remove(&ctx->panel);
++
++	return 0;
++}
++
++static const struct spi_device_id ili9806_ids[] = {
++	{ "txw397017s2", 0 },
++	{ "ili9806e", 0 },
++	{ "hyperpixel4", 0 },
++	{ /* sentinel */ }
++};
++
++MODULE_DEVICE_TABLE(spi, ili9806_ids);
++
++static struct spi_driver ili9806_driver = {
++	.probe = ili9806_probe,
++	.remove = ili9806_remove,
++	.driver = {
++		.name = "ili9806e",
++		.of_match_table = ili9806_of_match,
++	},
++	.id_table = ili9806_ids,
++};
++module_spi_driver(ili9806_driver);
++
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
++MODULE_DESCRIPTION("ili9806 LCD panel driver");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0693-drm-panel-Add-panel-driver-for-TDO-Y17B-based-panels.patch b/target/linux/bcm27xx/patches-5.15/950-0693-drm-panel-Add-panel-driver-for-TDO-Y17B-based-panels.patch
new file mode 100644
index 0000000000..4c96b773c7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0693-drm-panel-Add-panel-driver-for-TDO-Y17B-based-panels.patch
@@ -0,0 +1,331 @@
+From f493a1250d55c4a61d94f631757186e8beef9d90 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 26 Jan 2022 16:02:31 +0000
+Subject: [PATCH] drm/panel: Add panel driver for TDO Y17B based panels
+
+The Top DisplayOptoelectronics (TDO) T17B driver chip is used
+in the TL040HDS20CT panel (found in the Pimoroni HyperPixel4
+Square display) and potentially other displays.
+The driver chip supports SPI for  configuration and DPI
+video data.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/Kconfig          |  11 +
+ drivers/gpu/drm/panel/Makefile         |   1 +
+ drivers/gpu/drm/panel/panel-tdo-y17p.c | 279 +++++++++++++++++++++++++
+ 3 files changed, 291 insertions(+)
+ create mode 100644 drivers/gpu/drm/panel/panel-tdo-y17p.c
+
+--- a/drivers/gpu/drm/panel/Kconfig
++++ b/drivers/gpu/drm/panel/Kconfig
+@@ -560,6 +560,17 @@ config DRM_PANEL_SONY_ACX565AKM
+ 	  Say Y here if you want to enable support for the Sony ACX565AKM
+ 	  800x600 3.5" panel (found on the Nokia N900).
+ 
++config DRM_PANEL_TPO_Y17P
++	tristate "TDO Y17P-based panels"
++	depends on OF && SPI
++	depends on DRM_KMS_HELPER
++	depends on DRM_KMS_CMA_HELPER
++	depends on BACKLIGHT_CLASS_DEVICE
++	select DRM_MIPI_DBI
++	help
++	  Say Y if you want to enable support for panels based on the
++	  TDO Y17P controller.
++
+ config DRM_PANEL_TDO_TL070WSH30
+ 	tristate "TDO TL070WSH30 DSI panel"
+ 	depends on OF
+--- a/drivers/gpu/drm/panel/Makefile
++++ b/drivers/gpu/drm/panel/Makefile
+@@ -58,6 +58,7 @@ obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V)
+ obj-$(CONFIG_DRM_PANEL_SONY_ACX424AKP) += panel-sony-acx424akp.o
+ obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
+ obj-$(CONFIG_DRM_PANEL_TDO_TL070WSH30) += panel-tdo-tl070wsh30.o
++obj-$(CONFIG_DRM_PANEL_TPO_Y17P) += panel-tdo-y17p.o
+ obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
+ obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
+ obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
+--- /dev/null
++++ b/drivers/gpu/drm/panel/panel-tdo-y17p.c
+@@ -0,0 +1,279 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * TDO Y17P TFT LCD drm_panel driver.
++ *
++ * SPI configured DPI display controller
++ * Copyright (C) 2022 Raspberry Pi Ltd
++ *
++ * Derived from drivers/drm/gpu/panel/panel-sitronix-st7789v.c
++ * Copyright (C) 2017 Free Electrons
++ */
++
++#include <drm/drm_modes.h>
++#include <drm/drm_panel.h>
++
++#include <linux/bitops.h>
++#include <linux/gpio/consumer.h>
++#include <linux/media-bus-format.h>
++#include <linux/module.h>
++#include <linux/of_device.h>
++#include <linux/regmap.h>
++#include <linux/regulator/consumer.h>
++#include <linux/spi/spi.h>
++
++#include <video/mipi_display.h>
++#include <video/of_videomode.h>
++#include <video/videomode.h>
++
++struct tdo_y17p {
++	struct drm_panel panel;
++	struct spi_device *spi;
++	struct gpio_desc *reset;
++	struct regulator *power;
++	u32 bus_format;
++};
++
++static const u16 panel_init[] = {
++	0x0ff, 0x1ff, 0x198, 0x106, 0x104, 0x101, 0x008, 0x110,
++	0x021, 0x109, 0x030, 0x102, 0x031, 0x100, 0x040, 0x110,
++	0x041, 0x155, 0x042, 0x102, 0x043, 0x109, 0x044, 0x107,
++	0x050, 0x178, 0x051, 0x178, 0x052, 0x100, 0x053, 0x16d,
++	0x060, 0x107, 0x061, 0x100, 0x062, 0x108, 0x063, 0x100,
++	0x0a0, 0x100, 0x0a1, 0x107, 0x0a2, 0x10c, 0x0a3, 0x10b,
++	0x0a4, 0x103, 0x0a5, 0x107, 0x0a6, 0x106, 0x0a7, 0x104,
++	0x0a8, 0x108, 0x0a9, 0x10c, 0x0aa, 0x113, 0x0ab, 0x106,
++	0x0ac, 0x10d, 0x0ad, 0x119, 0x0ae, 0x110, 0x0af, 0x100,
++	0x0c0, 0x100, 0x0c1, 0x107, 0x0c2, 0x10c, 0x0c3, 0x10b,
++	0x0c4, 0x103, 0x0c5, 0x107, 0x0c6, 0x107, 0x0c7, 0x104,
++	0x0c8, 0x108, 0x0c9, 0x10c, 0x0ca, 0x113, 0x0cb, 0x106,
++	0x0cc, 0x10d, 0x0cd, 0x118, 0x0ce, 0x110, 0x0cf, 0x100,
++	0x0ff, 0x1ff, 0x198, 0x106, 0x104, 0x106, 0x000, 0x120,
++	0x001, 0x10a, 0x002, 0x100, 0x003, 0x100, 0x004, 0x101,
++	0x005, 0x101, 0x006, 0x198, 0x007, 0x106, 0x008, 0x101,
++	0x009, 0x180, 0x00a, 0x100, 0x00b, 0x100, 0x00c, 0x101,
++	0x00d, 0x101, 0x00e, 0x100, 0x00f, 0x100, 0x010, 0x1f0,
++	0x011, 0x1f4, 0x012, 0x101, 0x013, 0x100, 0x014, 0x100,
++	0x015, 0x1c0, 0x016, 0x108, 0x017, 0x100, 0x018, 0x100,
++	0x019, 0x100, 0x01a, 0x100, 0x01b, 0x100, 0x01c, 0x100,
++	0x01d, 0x100, 0x020, 0x101, 0x021, 0x123, 0x022, 0x145,
++	0x023, 0x167, 0x024, 0x101, 0x025, 0x123, 0x026, 0x145,
++	0x027, 0x167, 0x030, 0x111, 0x031, 0x111, 0x032, 0x100,
++	0x033, 0x1ee, 0x034, 0x1ff, 0x035, 0x1bb, 0x036, 0x1aa,
++	0x037, 0x1dd, 0x038, 0x1cc, 0x039, 0x166, 0x03a, 0x177,
++	0x03b, 0x122, 0x03c, 0x122, 0x03d, 0x122, 0x03e, 0x122,
++	0x03f, 0x122, 0x040, 0x122, 0x052, 0x110, 0x053, 0x110,
++	0x0ff, 0x1ff, 0x198, 0x106, 0x104, 0x107, 0x018, 0x11d,
++	0x017, 0x122, 0x002, 0x177, 0x026, 0x1b2, 0x0e1, 0x179,
++	0x0ff, 0x1ff, 0x198, 0x106, 0x104, 0x100, 0x03a, 0x160,
++	0x035, 0x100, 0x011, 0x100,
++};
++
++#define NUM_INIT_REGS ARRAY_SIZE(panel_init)
++
++static inline struct tdo_y17p *panel_to_tdo_y17p(struct drm_panel *panel)
++{
++	return container_of(panel, struct tdo_y17p, panel);
++}
++
++static int tdo_y17p_write_msg(struct tdo_y17p *ctx, const u16 *msg, unsigned int len)
++{
++	struct spi_transfer xfer = { };
++	struct spi_message spi;
++
++	spi_message_init(&spi);
++
++	xfer.tx_buf = msg;
++	xfer.bits_per_word = 9;
++	xfer.len = sizeof(u16) * len;
++
++	spi_message_add_tail(&xfer, &spi);
++	return spi_sync(ctx->spi, &spi);
++}
++
++static const struct drm_display_mode tdo_y17pe_720x720_mode = {
++	.clock = 36720,
++	.hdisplay = 720,
++	.hsync_start = 720 + 20,
++	.hsync_end = 720 + 20 + 20,
++	.htotal = 720 + 20 + 20 + 40,
++	.vdisplay = 720,
++	.vsync_start = 720 + 15,
++	.vsync_end = 720 + 15 + 15,
++	.vtotal = 720 + 15 + 15 + 15,
++	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
++};
++
++static int tdo_y17p_get_modes(struct drm_panel *panel,
++			      struct drm_connector *connector)
++{
++	struct tdo_y17p *ctx = panel_to_tdo_y17p(panel);
++	struct drm_display_mode *mode;
++
++	mode = drm_mode_duplicate(connector->dev, &tdo_y17pe_720x720_mode);
++	if (!mode) {
++		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
++			tdo_y17pe_720x720_mode.hdisplay,
++			tdo_y17pe_720x720_mode.vdisplay,
++			drm_mode_vrefresh(&tdo_y17pe_720x720_mode));
++		return -ENOMEM;
++	}
++
++	drm_mode_set_name(mode);
++
++	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
++	drm_mode_probed_add(connector, mode);
++
++	connector->display_info.width_mm = 72;
++	connector->display_info.height_mm = 72;
++	drm_display_info_set_bus_formats(&connector->display_info,
++					 &ctx->bus_format, 1);
++	connector->display_info.bus_flags = 0;
++
++	return 1;
++}
++
++static int tdo_y17p_prepare(struct drm_panel *panel)
++{
++	struct tdo_y17p *ctx = panel_to_tdo_y17p(panel);
++	int ret;
++
++	ret = regulator_enable(ctx->power);
++	if (ret)
++		return ret;
++
++	ret = tdo_y17p_write_msg(ctx, panel_init, NUM_INIT_REGS);
++
++	msleep(120);
++
++	return ret;
++}
++
++static int tdo_y17p_enable(struct drm_panel *panel)
++{
++	struct tdo_y17p *ctx = panel_to_tdo_y17p(panel);
++	const u16 msg[] = { MIPI_DCS_SET_DISPLAY_ON };
++	int ret;
++
++	ret = tdo_y17p_write_msg(ctx, msg, ARRAY_SIZE(msg));
++
++	return ret;
++}
++
++static int tdo_y17p_disable(struct drm_panel *panel)
++{
++	struct tdo_y17p *ctx = panel_to_tdo_y17p(panel);
++	const u16 msg[] = { MIPI_DCS_SET_DISPLAY_OFF };
++	int ret;
++
++	ret = tdo_y17p_write_msg(ctx, msg, ARRAY_SIZE(msg));
++
++	return ret;
++}
++
++static int tdo_y17p_unprepare(struct drm_panel *panel)
++{
++	struct tdo_y17p *ctx = panel_to_tdo_y17p(panel);
++	const u16 msg[] = { MIPI_DCS_ENTER_SLEEP_MODE };
++	int ret;
++
++	ret = tdo_y17p_write_msg(ctx, msg, ARRAY_SIZE(msg));
++
++	return ret;
++}
++
++static const struct drm_panel_funcs tdo_y17p_drm_funcs = {
++	.disable	= tdo_y17p_disable,
++	.enable		= tdo_y17p_enable,
++	.get_modes	= tdo_y17p_get_modes,
++	.prepare	= tdo_y17p_prepare,
++	.unprepare	= tdo_y17p_unprepare,
++};
++
++static const struct of_device_id tdo_y17p_of_match[] = {
++	{	.compatible = "tdo,tl040hds20ct",
++		.data = (void *)MEDIA_BUS_FMT_BGR888_1X24,
++	}, {
++		.compatible = "pimoroni,hyperpixel4square",
++		.data = (void *)MEDIA_BUS_FMT_BGR666_1X24_CPADHI,
++	}, {
++		.compatible = "tdo,y17p",
++		.data = (void *)MEDIA_BUS_FMT_BGR888_1X24,
++	}, {
++		/* sentinel */
++	}
++};
++MODULE_DEVICE_TABLE(of, tdo_y17p_of_match);
++
++static int tdo_y17p_probe(struct spi_device *spi)
++{
++	const struct of_device_id *id;
++	struct tdo_y17p *ctx;
++	int ret;
++
++	ctx = devm_kzalloc(&spi->dev, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++
++	id = of_match_node(tdo_y17p_of_match, spi->dev.of_node);
++	if (!id)
++		return -ENODEV;
++
++	ctx->bus_format = (u32)id->data;
++
++	spi_set_drvdata(spi, ctx);
++	ctx->spi = spi;
++
++	drm_panel_init(&ctx->panel, &spi->dev, &tdo_y17p_drm_funcs,
++		       DRM_MODE_CONNECTOR_DPI);
++
++	ctx->power = devm_regulator_get(&spi->dev, "power");
++	if (IS_ERR(ctx->power))
++		return PTR_ERR(ctx->power);
++
++	ctx->reset = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_LOW);
++	if (IS_ERR(ctx->reset)) {
++		dev_err(&spi->dev, "Couldn't get our reset line\n");
++		return PTR_ERR(ctx->reset);
++	}
++
++	ret = drm_panel_of_backlight(&ctx->panel);
++	if (ret)
++		return ret;
++
++	drm_panel_add(&ctx->panel);
++
++	return 0;
++}
++
++static int tdo_y17p_remove(struct spi_device *spi)
++{
++	struct tdo_y17p *ctx = spi_get_drvdata(spi);
++
++	drm_panel_remove(&ctx->panel);
++
++	return 0;
++}
++
++static const struct spi_device_id tdo_y17p_ids[] = {
++	{ "tl040hds20ct", 0 },
++	{ "hyperpixel4square", 0 },
++	{ "y17p", 0 },
++	{ /* sentinel */ }
++};
++
++MODULE_DEVICE_TABLE(spi, tdo_y17p_ids);
++
++static struct spi_driver tdo_y17p_driver = {
++	.probe = tdo_y17p_probe,
++	.remove = tdo_y17p_remove,
++	.driver = {
++		.name = "tdo_y17p",
++		.of_match_table = tdo_y17p_of_match,
++	},
++	.id_table = tdo_y17p_ids,
++};
++module_spi_driver(tdo_y17p_driver);
++
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
++MODULE_DESCRIPTION("TDO Y17P LCD panel driver");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0694-drm-panel-panel-sitronix-st7701-Support-SPI-config-a.patch b/target/linux/bcm27xx/patches-5.15/950-0694-drm-panel-panel-sitronix-st7701-Support-SPI-config-a.patch
new file mode 100644
index 0000000000..f4cc7a87e3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0694-drm-panel-panel-sitronix-st7701-Support-SPI-config-a.patch
@@ -0,0 +1,564 @@
+From 6e9d09063a883bd69c84a95f6e854a7dbe7720af Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 1 Feb 2022 15:27:01 +0000
+Subject: [PATCH] drm/panel/panel-sitronix-st7701: Support SPI config
+ and RGB data
+
+The ST7701 supports numerous different interface mechanisms for
+MIPI DSI, RGB, or SPI. The driver was only implementing DSI input,
+so add RGB parallel input with SPI configuration.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-sitronix-st7701.c | 382 ++++++++++++++++--
+ 1 file changed, 359 insertions(+), 23 deletions(-)
+
+--- a/drivers/gpu/drm/panel/panel-sitronix-st7701.c
++++ b/drivers/gpu/drm/panel/panel-sitronix-st7701.c
+@@ -7,15 +7,20 @@
+ #include <drm/drm_mipi_dsi.h>
+ #include <drm/drm_modes.h>
+ #include <drm/drm_panel.h>
++#include <drm/drm_print.h>
+ 
+ #include <linux/gpio/consumer.h>
+ #include <linux/delay.h>
++#include <linux/media-bus-format.h>
+ #include <linux/module.h>
+ #include <linux/of_device.h>
+ #include <linux/regulator/consumer.h>
++#include <linux/spi/spi.h>
+ 
+ #include <video/mipi_display.h>
+ 
++#define SPI_DATA_FLAG			0x100
++
+ /* Command2 BKx selection command */
+ #define DSI_CMD2BKX_SEL			0xFF
+ 
+@@ -46,9 +51,14 @@
+  * 11 = CMD2BK1, Command2 BK1
+  * 00 = Command2 disable
+  */
++#define DSI_CMD2BK3_SEL			0x13
+ #define DSI_CMD2BK1_SEL			0x11
+ #define DSI_CMD2BK0_SEL			0x10
+ #define DSI_CMD2BKX_SEL_NONE		0x00
++#define SPI_CMD2BK3_SEL			(SPI_DATA_FLAG | DSI_CMD2BK3_SEL)
++#define SPI_CMD2BK1_SEL			(SPI_DATA_FLAG | DSI_CMD2BK1_SEL)
++#define SPI_CMD2BK0_SEL			(SPI_DATA_FLAG | DSI_CMD2BK0_SEL)
++#define SPI_CMD2BKX_SEL_NONE		(SPI_DATA_FLAG | DSI_CMD2BKX_SEL_NONE)
+ 
+ /* Command2, BK0 bytes */
+ #define DSI_LINESET_LINE		0x69
+@@ -86,19 +96,34 @@
+ #define DSI_MIPISET1_EOT_EN		BIT(3)
+ #define DSI_CMD2_BK1_MIPISET1_SET	(BIT(7) | DSI_MIPISET1_EOT_EN)
+ 
++struct st7701;
++
++enum st7701_ctrl_if {
++	ST7701_CTRL_DSI,
++	ST7701_CTRL_SPI,
++};
++
+ struct st7701_panel_desc {
+ 	const struct drm_display_mode *mode;
+ 	unsigned int lanes;
+ 	unsigned long flags;
+ 	enum mipi_dsi_pixel_format format;
++	u32 mediabus_format;
+ 	const char *const *supply_names;
+ 	unsigned int num_supplies;
+ 	unsigned int panel_sleep_delay;
++	void (*init_sequence)(struct st7701 *st7701);
++	unsigned int conn_type;
++	enum st7701_ctrl_if interface;
++	u32 bus_flags;
+ };
+ 
+ struct st7701 {
+ 	struct drm_panel panel;
+ 	struct mipi_dsi_device *dsi;
++	struct spi_device *spi;
++	const struct device *dev;
++
+ 	const struct st7701_panel_desc *desc;
+ 
+ 	struct regulator_bulk_data *supplies;
+@@ -123,7 +148,23 @@ static inline int st7701_dsi_write(struc
+ 		st7701_dsi_write(st7701, d, ARRAY_SIZE(d));	\
+ 	}
+ 
+-static void st7701_init_sequence(struct st7701 *st7701)
++#define ST7701_SPI(st7701, seq...)				\
++	{							\
++		const u16 d[] = { seq };			\
++		struct spi_transfer xfer = { };			\
++		struct spi_message spi;				\
++								\
++		spi_message_init(&spi);				\
++								\
++		xfer.tx_buf = d;				\
++		xfer.bits_per_word = 9;				\
++		xfer.len = sizeof(u16) * ARRAY_SIZE(d);		\
++								\
++		spi_message_add_tail(&xfer, &spi);		\
++		spi_sync((st7701)->spi, &spi);			\
++	}
++
++static void ts8550b_init_sequence(struct st7701 *st7701)
+ {
+ 	const struct drm_display_mode *mode = st7701->desc->mode;
+ 
+@@ -194,6 +235,111 @@ static void st7701_init_sequence(struct
+ 		   0x77, 0x01, 0x00, 0x00, DSI_CMD2BKX_SEL_NONE);
+ }
+ 
++static void txw210001b0_init_sequence(struct st7701 *st7701)
++{
++	ST7701_SPI(st7701, MIPI_DCS_SOFT_RESET);
++
++	usleep_range(5000, 7000);
++
++	ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
++		   0x177, 0x101, 0x100, 0x100, SPI_CMD2BK0_SEL);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK0_LNESET, 0x13B, 0x100);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK0_PORCTRL, 0x10B, 0x102);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK0_INVSEL, 0x100, 0x102);
++
++	ST7701_SPI(st7701, 0xCC, 0x110);
++
++	/*
++	 * Gamma option B:
++	 * Positive Voltage Gamma Control
++	 */
++	ST7701_SPI(st7701, DSI_CMD2_BK0_PVGAMCTRL,
++		   0x102, 0x113, 0x11B, 0x10D, 0x110, 0x105, 0x108, 0x107,
++		   0x107, 0x124, 0x104, 0x111, 0x10E, 0x12C, 0x133, 0x11D);
++
++	/* Negative Voltage Gamma Control */
++	ST7701_SPI(st7701, DSI_CMD2_BK0_NVGAMCTRL,
++		   0x105, 0x113, 0x11B, 0x10D, 0x111, 0x105, 0x108, 0x107,
++		   0x107, 0x124, 0x104, 0x111, 0x10E, 0x12C, 0x133, 0x11D);
++
++	ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
++		   0x177, 0x101, 0x100, 0x100, SPI_CMD2BK1_SEL);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_VRHS, 0x15D);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_VCOM, 0x143);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_VGHSS, 0x181);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_TESTCMD, 0x180);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_VGLS, 0x143);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_PWCTLR1, 0x185);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_PWCTLR2, 0x120);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_SPD1, 0x178);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_SPD2, 0x178);
++
++	ST7701_SPI(st7701, DSI_CMD2_BK1_MIPISET1, 0x188);
++
++	ST7701_SPI(st7701, 0xE0, 0x100, 0x100, 0x102);
++
++	ST7701_SPI(st7701, 0xE1,
++		   0x103, 0x1A0, 0x100, 0x100, 0x104, 0x1A0, 0x100, 0x100,
++		   0x100, 0x120, 0x120);
++
++	ST7701_SPI(st7701, 0xE2,
++		   0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
++		   0x100, 0x100, 0x100, 0x100, 0x100);
++
++	ST7701_SPI(st7701, 0xE3, 0x100, 0x100, 0x111, 0x100);
++
++	ST7701_SPI(st7701, 0xE4, 0x122, 0x100);
++
++	ST7701_SPI(st7701, 0xE5,
++		   0x105, 0x1EC, 0x1A0, 0x1A0, 0x107, 0x1EE, 0x1A0, 0x1A0,
++		   0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100);
++
++	ST7701_SPI(st7701, 0xE6, 0x100, 0x100, 0x111, 0x100);
++
++	ST7701_SPI(st7701, 0xE7, 0x122, 0x100);
++
++	ST7701_SPI(st7701, 0xE8,
++		   0x106, 0x1ED, 0x1A0, 0x1A0, 0x108, 0x1EF, 0x1A0, 0x1A0,
++		   0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100);
++
++	ST7701_SPI(st7701, 0xEB,
++		   0x100, 0x100, 0x140, 0x140, 0x100, 0x100, 0x100);
++
++	ST7701_SPI(st7701, 0xED,
++		   0x1FF, 0x1FF, 0x1FF, 0x1BA, 0x10A, 0x1BF, 0x145, 0x1FF,
++		   0x1FF, 0x154, 0x1FB, 0x1A0, 0x1AB, 0x1FF, 0x1FF, 0x1FF);
++
++	ST7701_SPI(st7701, 0xEF, 0x110, 0x10D, 0x104, 0x108, 0x13F, 0x11F);
++
++	ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
++		   0x177, 0x101, 0x100, 0x100, SPI_CMD2BK3_SEL);
++
++	ST7701_SPI(st7701, 0xEF, 0x108);
++
++	ST7701_SPI(st7701, DSI_CMD2BKX_SEL,
++		   0x177, 0x101, 0x100, 0x100, SPI_CMD2BKX_SEL_NONE);
++
++	ST7701_SPI(st7701, 0xCD, 0x108);  /* RGB format COLCTRL */
++
++	ST7701_SPI(st7701, 0x36, 0x108); /* MadCtl */
++
++	ST7701_SPI(st7701, 0x3A, 0x166);  /* Colmod */
++
++	ST7701_SPI(st7701, MIPI_DCS_EXIT_SLEEP_MODE);
++}
++
+ static int st7701_prepare(struct drm_panel *panel)
+ {
+ 	struct st7701 *st7701 = panel_to_st7701(panel);
+@@ -210,7 +356,7 @@ static int st7701_prepare(struct drm_pan
+ 	gpiod_set_value(st7701->reset, 1);
+ 	msleep(150);
+ 
+-	st7701_init_sequence(st7701);
++	st7701->desc->init_sequence(st7701);
+ 
+ 	return 0;
+ }
+@@ -219,7 +365,15 @@ static int st7701_enable(struct drm_pane
+ {
+ 	struct st7701 *st7701 = panel_to_st7701(panel);
+ 
+-	ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
++	switch (st7701->desc->interface) {
++	case ST7701_CTRL_DSI:
++		ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
++		break;
++	case ST7701_CTRL_SPI:
++		ST7701_SPI(st7701, MIPI_DCS_SET_DISPLAY_ON);
++		msleep(30);
++		break;
++	}
+ 
+ 	return 0;
+ }
+@@ -228,7 +382,14 @@ static int st7701_disable(struct drm_pan
+ {
+ 	struct st7701 *st7701 = panel_to_st7701(panel);
+ 
+-	ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
++	switch (st7701->desc->interface) {
++	case ST7701_CTRL_DSI:
++		ST7701_DSI(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
++		break;
++	case ST7701_CTRL_SPI:
++		ST7701_SPI(st7701, MIPI_DCS_SET_DISPLAY_OFF);
++		break;
++	}
+ 
+ 	return 0;
+ }
+@@ -237,7 +398,14 @@ static int st7701_unprepare(struct drm_p
+ {
+ 	struct st7701 *st7701 = panel_to_st7701(panel);
+ 
+-	ST7701_DSI(st7701, MIPI_DCS_ENTER_SLEEP_MODE, 0x00);
++	switch (st7701->desc->interface) {
++	case ST7701_CTRL_DSI:
++		ST7701_DSI(st7701, MIPI_DCS_ENTER_SLEEP_MODE, 0x00);
++		break;
++	case ST7701_CTRL_SPI:
++		ST7701_SPI(st7701, MIPI_DCS_ENTER_SLEEP_MODE);
++		break;
++	}
+ 
+ 	msleep(st7701->sleep_delay);
+ 
+@@ -268,7 +436,7 @@ static int st7701_get_modes(struct drm_p
+ 
+ 	mode = drm_mode_duplicate(connector->dev, desc_mode);
+ 	if (!mode) {
+-		dev_err(&st7701->dsi->dev, "failed to add mode %ux%u@%u\n",
++		dev_err(st7701->dev, "failed to add mode %ux%u@%u\n",
+ 			desc_mode->hdisplay, desc_mode->vdisplay,
+ 			drm_mode_vrefresh(desc_mode));
+ 		return -ENOMEM;
+@@ -277,9 +445,18 @@ static int st7701_get_modes(struct drm_p
+ 	drm_mode_set_name(mode);
+ 	drm_mode_probed_add(connector, mode);
+ 
++	if (st7701->desc->mediabus_format)
++		drm_display_info_set_bus_formats(&connector->display_info,
++						 &st7701->desc->mediabus_format,
++						 1);
++	connector->display_info.bus_flags = 0;
++
+ 	connector->display_info.width_mm = desc_mode->width_mm;
+ 	connector->display_info.height_mm = desc_mode->height_mm;
+ 
++	if (st7701->desc->bus_flags)
++		connector->display_info.bus_flags = st7701->desc->bus_flags;
++
+ 	return 1;
+ }
+ 
+@@ -323,24 +500,68 @@ static const struct st7701_panel_desc ts
+ 	.supply_names = ts8550b_supply_names,
+ 	.num_supplies = ARRAY_SIZE(ts8550b_supply_names),
+ 	.panel_sleep_delay = 80, /* panel need extra 80ms for sleep out cmd */
++	.init_sequence = ts8550b_init_sequence,
++	.conn_type = DRM_MODE_CONNECTOR_DSI,
++	.interface = ST7701_CTRL_DSI,
+ };
+ 
+-static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
++static const struct drm_display_mode txw210001b0_mode = {
++	.clock		= 19200,
++
++	.hdisplay	= 480,
++	.hsync_start	= 480 + 10,
++	.hsync_end	= 480 + 10 + 16,
++	.htotal		= 480 + 10 + 16 + 56,
++
++	.vdisplay	= 480,
++	.vsync_start	= 480 + 15,
++	.vsync_end	= 480 + 15 + 60,
++	.vtotal		= 480 + 15 + 60 + 15,
++
++	.width_mm	= 53,
++	.height_mm	= 53,
++	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
++
++	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
++};
++
++static const struct st7701_panel_desc txw210001b0_desc = {
++	.mode = &txw210001b0_mode,
++	.mediabus_format = MEDIA_BUS_FMT_RGB888_1X24,
++	.supply_names = ts8550b_supply_names,
++	.num_supplies = ARRAY_SIZE(ts8550b_supply_names),
++	.init_sequence = txw210001b0_init_sequence,
++	.conn_type = DRM_MODE_CONNECTOR_DPI,
++	.interface = ST7701_CTRL_SPI,
++	.bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
++};
++
++static const struct st7701_panel_desc hyperpixel2r_desc = {
++	.mode = &txw210001b0_mode,
++	.mediabus_format = MEDIA_BUS_FMT_RGB666_1X24_CPADHI,
++	.supply_names = ts8550b_supply_names,
++	.num_supplies = ARRAY_SIZE(ts8550b_supply_names),
++	.init_sequence = txw210001b0_init_sequence,
++	.conn_type = DRM_MODE_CONNECTOR_DPI,
++	.interface = ST7701_CTRL_SPI,
++	.bus_flags = DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
++};
++
++static int st7701_probe(struct device *dev, struct st7701 **ret_st7701)
+ {
+ 	const struct st7701_panel_desc *desc;
+ 	struct st7701 *st7701;
+ 	int ret, i;
+ 
+-	st7701 = devm_kzalloc(&dsi->dev, sizeof(*st7701), GFP_KERNEL);
++	st7701 = devm_kzalloc(dev, sizeof(*st7701), GFP_KERNEL);
+ 	if (!st7701)
+ 		return -ENOMEM;
+ 
+-	desc = of_device_get_match_data(&dsi->dev);
+-	dsi->mode_flags = desc->flags;
+-	dsi->format = desc->format;
+-	dsi->lanes = desc->lanes;
++	desc = of_device_get_match_data(dev);
++	if (!desc)
++		return -EINVAL;
+ 
+-	st7701->supplies = devm_kcalloc(&dsi->dev, desc->num_supplies,
++	st7701->supplies = devm_kcalloc(dev, desc->num_supplies,
+ 					sizeof(*st7701->supplies),
+ 					GFP_KERNEL);
+ 	if (!st7701->supplies)
+@@ -349,19 +570,19 @@ static int st7701_dsi_probe(struct mipi_
+ 	for (i = 0; i < desc->num_supplies; i++)
+ 		st7701->supplies[i].supply = desc->supply_names[i];
+ 
+-	ret = devm_regulator_bulk_get(&dsi->dev, desc->num_supplies,
++	ret = devm_regulator_bulk_get(dev, desc->num_supplies,
+ 				      st7701->supplies);
+ 	if (ret < 0)
+ 		return ret;
+ 
+-	st7701->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
++	st7701->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+ 	if (IS_ERR(st7701->reset)) {
+-		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
++		dev_err(dev, "Couldn't get our reset GPIO\n");
+ 		return PTR_ERR(st7701->reset);
+ 	}
+ 
+-	drm_panel_init(&st7701->panel, &dsi->dev, &st7701_funcs,
+-		       DRM_MODE_CONNECTOR_DSI);
++	drm_panel_init(&st7701->panel, dev, &st7701_funcs,
++		       desc->conn_type);
+ 
+ 	/**
+ 	 * Once sleep out has been issued, ST7701 IC required to wait 120ms
+@@ -380,9 +601,30 @@ static int st7701_dsi_probe(struct mipi_
+ 
+ 	drm_panel_add(&st7701->panel);
+ 
++	st7701->desc = desc;
++	st7701->dev = dev;
++
++	*ret_st7701 = st7701;
++
++	return 0;
++}
++
++static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
++{
++	struct st7701 *st7701;
++	int ret;
++
++	ret = st7701_probe(&dsi->dev, &st7701);
++
++	if (ret)
++		return ret;
++
++	dsi->mode_flags = st7701->desc->flags;
++	dsi->format = st7701->desc->format;
++	dsi->lanes = st7701->desc->lanes;
++
+ 	mipi_dsi_set_drvdata(dsi, st7701);
+ 	st7701->dsi = dsi;
+-	st7701->desc = desc;
+ 
+ 	return mipi_dsi_attach(dsi);
+ }
+@@ -397,21 +639,115 @@ static int st7701_dsi_remove(struct mipi
+ 	return 0;
+ }
+ 
+-static const struct of_device_id st7701_of_match[] = {
++static const struct of_device_id st7701_dsi_of_match[] = {
+ 	{ .compatible = "techstar,ts8550b", .data = &ts8550b_desc },
+ 	{ }
+ };
+-MODULE_DEVICE_TABLE(of, st7701_of_match);
++MODULE_DEVICE_TABLE(of, st7701_dsi_of_match);
+ 
+ static struct mipi_dsi_driver st7701_dsi_driver = {
+ 	.probe		= st7701_dsi_probe,
+ 	.remove		= st7701_dsi_remove,
+ 	.driver = {
+ 		.name		= "st7701",
+-		.of_match_table	= st7701_of_match,
++		.of_match_table	= st7701_dsi_of_match,
+ 	},
+ };
+-module_mipi_dsi_driver(st7701_dsi_driver);
++
++/* SPI display  probe */
++static const struct of_device_id st7701_spi_of_match[] = {
++	{	.compatible = "txw,txw210001b0",
++		.data = &txw210001b0_desc,
++	}, {
++		.compatible = "pimoroni,hyperpixel2round",
++		.data = &hyperpixel2r_desc,
++	}, {
++		/* sentinel */
++	}
++};
++MODULE_DEVICE_TABLE(of, st7701_spi_of_match);
++
++static int st7701_spi_probe(struct spi_device *spi)
++{
++	struct st7701 *st7701;
++	int ret;
++
++	spi->mode = SPI_MODE_3;
++	spi->bits_per_word = 9;
++	ret = spi_setup(spi);
++	if (ret < 0) {
++		dev_err(&spi->dev, "failed to setup SPI: %d\n", ret);
++		return ret;
++	}
++
++	ret = st7701_probe(&spi->dev, &st7701);
++
++	if (ret)
++		return ret;
++
++	spi_set_drvdata(spi, st7701);
++	st7701->spi = spi;
++
++	return 0;
++}
++
++static int st7701_spi_remove(struct spi_device *spi)
++{
++	struct st7701 *ctx = spi_get_drvdata(spi);
++
++	drm_panel_remove(&ctx->panel);
++
++	return 0;
++}
++
++static const struct spi_device_id st7701_spi_ids[] = {
++	{ "txw210001b0", 0 },
++	{ "hyperpixel2round", 0 },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(spi, st7701_spi_ids);
++
++static struct spi_driver st7701_spi_driver = {
++	.probe = st7701_spi_probe,
++	.remove = st7701_spi_remove,
++	.driver = {
++		.name = "st7701",
++		.of_match_table = st7701_spi_of_match,
++	},
++	.id_table = st7701_spi_ids,
++};
++
++static int __init panel_st7701_init(void)
++{
++	int err;
++
++	err = spi_register_driver(&st7701_spi_driver);
++	if (err < 0)
++		return err;
++
++	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
++		err = mipi_dsi_driver_register(&st7701_dsi_driver);
++		if (err < 0)
++			goto err_did_spi_register;
++	}
++
++	return 0;
++
++err_did_spi_register:
++	spi_unregister_driver(&st7701_spi_driver);
++
++	return err;
++}
++module_init(panel_st7701_init);
++
++static void __exit panel_st7701_exit(void)
++{
++	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
++		mipi_dsi_driver_unregister(&st7701_dsi_driver);
++
++	spi_unregister_driver(&st7701_spi_driver);
++}
++module_exit(panel_st7701_exit);
+ 
+ MODULE_AUTHOR("Jagan Teki <jagan@amarulasolutions.com>");
+ MODULE_DESCRIPTION("Sitronix ST7701 LCD Panel Driver");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0695-bindings-Add-sck-idle-input-to-spi-gpio.patch b/target/linux/bcm27xx/patches-5.15/950-0695-bindings-Add-sck-idle-input-to-spi-gpio.patch
new file mode 100644
index 0000000000..092cf7f008
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0695-bindings-Add-sck-idle-input-to-spi-gpio.patch
@@ -0,0 +1,23 @@
+From 6b288a04d38f9f3ba44143fb628d4833201eaded Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 4 Feb 2022 11:33:28 +0000
+Subject: [PATCH] bindings: Add sck-idle-input to spi-gpio
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ Documentation/devicetree/bindings/spi/spi-gpio.yaml | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/Documentation/devicetree/bindings/spi/spi-gpio.yaml
++++ b/Documentation/devicetree/bindings/spi/spi-gpio.yaml
+@@ -43,6 +43,10 @@ properties:
+       with no chip select is connected.
+     $ref: "/schemas/types.yaml#/definitions/uint32"
+ 
++  sck-idle-input:
++    description: Make SCK an input when inactive.
++    type: boolean
++
+   # Deprecated properties
+   gpio-sck: false
+   gpio-miso: false
diff --git a/target/linux/bcm27xx/patches-5.15/950-0696-spi-gpio-Add-sck-idle-input-property.patch b/target/linux/bcm27xx/patches-5.15/950-0696-spi-gpio-Add-sck-idle-input-property.patch
new file mode 100644
index 0000000000..6b359c4bb8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0696-spi-gpio-Add-sck-idle-input-property.patch
@@ -0,0 +1,57 @@
+From c979072887ef70aab2ab6e71544853df71017925 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 12 Jan 2022 08:23:28 +0000
+Subject: [PATCH] spi: gpio: Add sck-idle-input property
+
+The sck-idle-input property indicates that the spi-gpio driver should
+return the SCK line to an input when the chip select signals are
+inactive.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/spi/spi-gpio.c | 13 +++++++++++--
+ 1 file changed, 11 insertions(+), 2 deletions(-)
+
+--- a/drivers/spi/spi-gpio.c
++++ b/drivers/spi/spi-gpio.c
+@@ -35,6 +35,7 @@ struct spi_gpio {
+ 	struct gpio_desc		*sck;
+ 	struct gpio_desc		*miso;
+ 	struct gpio_desc		*mosi;
++	bool				sck_idle_input;
+ 	struct gpio_desc		**cs_gpios;
+ };
+ 
+@@ -201,8 +202,12 @@ static void spi_gpio_chipselect(struct s
+ 	struct spi_gpio *spi_gpio = spi_to_spi_gpio(spi);
+ 
+ 	/* set initial clock line level */
+-	if (is_active)
+-		gpiod_set_value_cansleep(spi_gpio->sck, spi->mode & SPI_CPOL);
++	if (is_active) {
++		if (spi_gpio->sck_idle_input)
++			gpiod_direction_output(spi_gpio->sck, spi->mode & SPI_CPOL);
++		else
++			gpiod_set_value_cansleep(spi_gpio->sck, spi->mode & SPI_CPOL);
++	}
+ 
+ 	/* Drive chip select line, if we have one */
+ 	if (spi_gpio->cs_gpios) {
+@@ -211,6 +216,9 @@ static void spi_gpio_chipselect(struct s
+ 		/* SPI chip selects are normally active-low */
+ 		gpiod_set_value_cansleep(cs, (spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
+ 	}
++
++	if (spi_gpio->sck_idle_input && !is_active)
++		gpiod_direction_input(spi_gpio->sck);
+ }
+ 
+ static int spi_gpio_setup(struct spi_device *spi)
+@@ -289,6 +297,7 @@ static int spi_gpio_request(struct devic
+ 	if (IS_ERR(spi_gpio->miso))
+ 		return PTR_ERR(spi_gpio->miso);
+ 
++	spi_gpio->sck_idle_input = device_property_read_bool(dev, "sck-idle-input");
+ 	spi_gpio->sck = devm_gpiod_get(dev, "sck", GPIOD_OUT_LOW);
+ 	return PTR_ERR_OR_ZERO(spi_gpio->sck);
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0697-dtoverlays-Add-overlays-for-Pimoroni-Hyperpixel-disp.patch b/target/linux/bcm27xx/patches-5.15/950-0697-dtoverlays-Add-overlays-for-Pimoroni-Hyperpixel-disp.patch
new file mode 100644
index 0000000000..74d35109f6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0697-dtoverlays-Add-overlays-for-Pimoroni-Hyperpixel-disp.patch
@@ -0,0 +1,394 @@
+From 4aa526733f16267bf28ee312e0b5b2ce3246f246 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 6 Jan 2022 13:04:34 +0000
+Subject: [PATCH] dtoverlays: Add overlays for Pimoroni Hyperpixel
+ displays
+
+Adds an overlays for the Pimoroni HyperPixel4, HyperPixel 4
+Square, and HyperPixel 2 Round DPI displays.
+
+We have a conflict over the use of GPIO 27 for touch screen
+interrupt and SPI CLK for configuring the display on the
+two HyperPixel4 displays.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   3 +
+ arch/arm/boot/dts/overlays/README             |  33 +++++
+ .../dts/overlays/vc4-kms-dpi-hyperpixel.dtsi  |  94 +++++++++++++++
+ .../vc4-kms-dpi-hyperpixel2r-overlay.dts      | 114 ++++++++++++++++++
+ .../vc4-kms-dpi-hyperpixel4-overlay.dts       |  57 +++++++++
+ .../vc4-kms-dpi-hyperpixel4sq-overlay.dts     |  36 ++++++
+ 6 files changed, 337 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel.dtsi
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel2r-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel4-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel4sq-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -235,6 +235,9 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	vc4-fkms-v3d.dtbo \
+ 	vc4-fkms-v3d-pi4.dtbo \
+ 	vc4-kms-dpi-generic.dtbo \
++	vc4-kms-dpi-hyperpixel2r.dtbo \
++	vc4-kms-dpi-hyperpixel4.dtbo \
++	vc4-kms-dpi-hyperpixel4sq.dtbo \
+ 	vc4-kms-dpi-panel.dtbo \
+ 	vc4-kms-dsi-7inch.dtbo \
+ 	vc4-kms-dsi-lt070me05000.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3676,6 +3676,39 @@ Params: clock-frequency         Display
+         rotate                  Display rotation {0,90,180,270} (default 0)
+ 
+ 
++Name:   vc4-kms-dpi-hyperpixel2r
++Info:   Enable the KMS drivers for the Pimoroni HyperPixel2 Round DPI display.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dpi-hyperpixel2r,<param>=<val>
++Params: disable-touch           Disables the touch controller
++        touchscreen-inverted-x  Inverts X direction of touch controller
++        touchscreen-inverted-y  Inverts Y direction of touch controller
++        touchscreen-swapped-x-y Swaps X & Y axes of touch controller
++        rotate                  Display rotation {0,90,180,270} (default 0)
++
++
++Name:   vc4-kms-dpi-hyperpixel4
++Info:   Enable the KMS drivers for the Pimoroni HyperPixel4 DPI display.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dpi-hyperpixel4,<param>=<val>
++Params: disable-touch           Disables the touch controller
++        touchscreen-inverted-x  Inverts X direction of touch controller
++        touchscreen-inverted-y  Inverts Y direction of touch controller
++        touchscreen-swapped-x-y Swaps X & Y axes of touch controller
++        rotate                  Display rotation {0,90,180,270} (default 0)
++
++
++Name:   vc4-kms-dpi-hyperpixel4sq
++Info:   Enable the KMS drivers for the Pimoroni HyperPixel4 Square DPI display.
++        Requires vc4-kms-v3d to be loaded.
++Load:   dtoverlay=vc4-kms-dpi-hyperpixel4sq,<param>=<val>
++Params: disable-touch           Disables the touch controller
++        touchscreen-inverted-x  Inverts X direction of touch controller
++        touchscreen-inverted-y  Inverts Y direction of touch controller
++        touchscreen-swapped-x-y Swaps X & Y axes of touch controller
++        rotate                  Display rotation {0,90,180,270} (default 0)
++
++
+ Name:   vc4-kms-dpi-panel
+ Info:   Enable a preconfigured KMS DPI panel.
+         Requires vc4-kms-v3d to be loaded.
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel.dtsi
+@@ -0,0 +1,94 @@
++/*
++ * vc4-kms-dpi-hyperpixel4.dtsi
++ * Commmon initialisation for HyperPixel DPI displays
++ */
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			spi {
++				compatible = "spi-gpio";
++				#address-cells = <1>;
++				#size-cells = <0>;
++				pinctrl-0 = <&spi_pins>;
++				pinctrl-names = "default";
++
++				sck-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
++				mosi-gpios = <&gpio 26 GPIO_ACTIVE_HIGH>;
++				cs-gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
++				num-chipselects = <1>;
++				sck-idle-input;
++
++				panel: display@0 {
++					reg = <0>;
++					/* 100 kHz */
++					spi-max-frequency = <100000>;
++					backlight = <&backlight>;
++					rotation = <0>;
++
++					port {
++						panel_in: endpoint {
++							remote-endpoint = <&dpi_out>;
++						};
++					};
++				};
++			};
++
++			backlight: backlight {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 19 0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&dpi>;
++		__overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
++
++			port {
++				dpi_out: endpoint {
++					remote-endpoint = <&panel_in>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			spi_pins: hyperpixel4_spi_pins {
++				brcm,pins = <27 18 26>;
++				brcm,pull = <BCM2835_PUD_UP BCM2835_PUD_UP BCM2835_PUD_OFF>;
++				brcm,function = <0>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			i2c_gpio: i2c@0 {
++				compatible = "i2c-gpio";
++				gpios = <&gpio 10 0 /* sda */
++					 &gpio 11 0>; /* scl */
++				i2c-gpio,delay-us = <4>;        /* ~100 kHz */
++				#address-cells = <1>;
++				#size-cells = <0>;
++			};
++		};
++	};
++
++	__overrides__ {
++		rotate = <&panel>, "rotation:0";
++	};
++};
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel2r-overlay.dts
+@@ -0,0 +1,114 @@
++/*
++ * vc4-kms-dpi-hyperpixel2r-overlay.dts
++ */
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/";
++		__overlay__ {
++			spi {
++				compatible = "spi-gpio";
++				#address-cells = <1>;
++				#size-cells = <0>;
++				pinctrl-0 = <&spi_pins>;
++				pinctrl-names = "default";
++
++				sck-gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
++				mosi-gpios = <&gpio 10 GPIO_ACTIVE_HIGH>;
++				cs-gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
++				num-chipselects = <1>;
++
++				panel: display@0 {
++					compatible = "pimoroni,hyperpixel2round";
++					reg = <0>;
++					/* 100 kHz */
++					spi-max-frequency = <100000>;
++					backlight = <&backlight>;
++					rotation = <0>;
++
++					port {
++						panel_in: endpoint {
++							remote-endpoint = <&dpi_out>;
++						};
++					};
++				};
++			};
++
++			backlight: backlight {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 19 0>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&dpi>;
++		__overlay__  {
++			status = "okay";
++
++			pinctrl-names = "default";
++			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
++
++			port {
++				dpi_out: endpoint {
++					remote-endpoint = <&panel_in>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			spi_pins: hyperpixel4_spi_pins {
++				brcm,pins = <27 18 26>;
++				brcm,pull = <BCM2835_PUD_UP BCM2835_PUD_UP BCM2835_PUD_OFF>;
++				brcm,function = <0>;
++			};
++		};
++	};
++
++	fragment@3 {
++		target-path = "/";
++		__overlay__ {
++			i2c_gpio: i2c@0 {
++				compatible = "i2c-gpio";
++				status = "disabled";
++
++				gpios = <&gpio 10 GPIO_ACTIVE_HIGH /* sda */
++					 &gpio 11 GPIO_ACTIVE_HIGH>; /* scl */
++				i2c-gpio,delay-us = <4>;        /* ~100 kHz */
++				#address-cells = <1>;
++				#size-cells = <0>;
++
++				polytouch: edt-ft5x06@15 {
++					#address-cells = <1>;
++					#size-cells = <0>;
++					compatible = "edt,edt-ft5406";
++					reg = <0x15>;
++					interrupt-parent = <&gpio>;
++					interrupts = <27 0x02>;
++					touchscreen-size-x = <240>;
++					touchscreen-size-y = <240>;
++				};
++			};
++		};
++	};
++
++	__overrides__ {
++		disable-touch = <0>,"-3";
++		touchscreen-inverted-x = <&polytouch>,"touchscreen-inverted-x?";
++		touchscreen-inverted-y = <&polytouch>,"touchscreen-inverted-y!";
++		touchscreen-swapped-x-y = <&polytouch>,"touchscreen-swapped-x-y!";
++		rotate = <&panel>, "rotation:0";
++	};
++
++};
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel4-overlay.dts
+@@ -0,0 +1,57 @@
++/*
++ * vc4-kms-dpi-hyperpixel4sq-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "vc4-kms-dpi-hyperpixel.dtsi"
++
++&panel {
++	compatible = "pimoroni,hyperpixel4";
++};
++
++/ {
++	fragment@11 {
++		target = <&i2c_gpio>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++			ft6236_14: ft6236@14 {
++				compatible = "goodix,gt911";
++				reg = <0x14>;
++				interrupt-parent = <&gpio>;
++				interrupts = <27 2>;
++				touchscreen-size-x = <480>;
++				touchscreen-size-y = <800>;
++				touchscreen-x-mm = <51>;
++				touchscreen-y-mm = <85>;
++				touchscreen-inverted-y;
++				touchscreen-swapped-x-y;
++			};
++			ft6236_5d: ft6236@5d {
++				compatible = "goodix,gt911";
++				reg = <0x5d>;
++				interrupt-parent = <&gpio>;
++				interrupts = <27 2>;
++				touchscreen-size-x = <480>;
++				touchscreen-size-y = <800>;
++				touchscreen-x-mm = <51>;
++				touchscreen-y-mm = <85>;
++				touchscreen-inverted-y;
++				touchscreen-swapped-x-y;
++			};
++		};
++	};
++
++	__overrides__ {
++		disable-touch = <0>,"-3-11";
++		touchscreen-inverted-x = <&ft6236_14>,"touchscreen-inverted-x?",
++					 <&ft6236_5d>,"touchscreen-inverted-x?";
++		touchscreen-inverted-y = <&ft6236_14>,"touchscreen-inverted-y!",
++					 <&ft6236_5d>,"touchscreen-inverted-y!";
++		touchscreen-swapped-x-y = <&ft6236_14>,"touchscreen-swapped-x-y!",
++					  <&ft6236_5d>,"touchscreen-swapped-x-y!";
++	};
++};
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel4sq-overlay.dts
+@@ -0,0 +1,36 @@
++/*
++ * vc4-kms-dpi-hyperpixel4-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include "vc4-kms-dpi-hyperpixel.dtsi"
++
++&panel {
++	compatible = "pimoroni,hyperpixel4square";
++};
++
++/ {
++	fragment@11 {
++		target = <&i2c_gpio>;
++		__overlay__ {
++			polytouch: edt-ft5x06@48 {
++				#address-cells = <1>;
++				#size-cells = <0>;
++				compatible = "edt,edt-ft5406";
++				reg = <0x48>;
++				interrupt-parent = <&gpio>;
++				interrupts = <27 0x02>;
++				touchscreen-size-x = <720>;
++				touchscreen-size-y = <720>;
++			};
++		};
++	};
++	__overrides__ {
++		disable-touch = <0>,"-3-11";
++		touchscreen-inverted-x = <&polytouch>,"touchscreen-inverted-x?";
++		touchscreen-inverted-y = <&polytouch>,"touchscreen-inverted-y!";
++		touchscreen-swapped-x-y = <&polytouch>,"touchscreen-swapped-x-y!";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0698-dtoverlay-Reduce-size-of-PCIE-IB-window-in-pcie-32-d.patch b/target/linux/bcm27xx/patches-5.15/950-0698-dtoverlay-Reduce-size-of-PCIE-IB-window-in-pcie-32-d.patch
new file mode 100644
index 0000000000..4badeb1bad
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0698-dtoverlay-Reduce-size-of-PCIE-IB-window-in-pcie-32-d.patch
@@ -0,0 +1,51 @@
+From e4402c2622756ab56d02159a8ff3c54165ab577c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 3 Feb 2022 11:17:16 +0000
+Subject: [PATCH] dtoverlay: Reduce size of PCIE IB window in
+ pcie-32-dma overlay
+
+The PCIE inbound window is rounded up to a power of 2, so the default
+of 3GB rounds up to 4GB starting at 0. This prohibits the MSI vector
+sitting at 0x0_fffffffc, and causes warnings from some subsystems
+(eg ahci) of a 64bit address on a 32bit configuration.
+
+Reduce the window down to 2GB to avoid this issue.
+
+https://github.com/raspberrypi/linux/issues/4848
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../dts/overlays/pcie-32bit-dma-overlay.dts   | 20 +++++++++++++++++++
+ 1 file changed, 20 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/pcie-32bit-dma-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pcie-32bit-dma-overlay.dts
+@@ -11,8 +11,28 @@
+ 	fragment@0 {
+ 		target-path = "/aliases";
+ 		__overlay__ {
++			/*
++			 * Removing this alias stops the firmware patching the
++			 * PCIE DT dma-ranges based on the detected chip
++			 * revision.
++			 */
+ 			pcie0 = "";
+ 		};
+ 	};
+ 
++	fragment@1 {
++		target = <&pcie0>;
++		__overlay__ {
++			/*
++			 * The size of the range is rounded up to a power of 2,
++			 * so the range ends up being 0-4GB, and the MSI vector
++			 * gets pushed beyond 4GB.
++			 */
++			#address-cells = <3>;
++			#size-cells = <2>;
++			dma-ranges = <0x02000000 0x0 0x00000000 0x0 0x00000000
++				      0x0 0x80000000>;
++		};
++	};
++
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0699-ARM-dts-Permanently-disable-hdmi1-and-ddc1-on-CM4S.patch b/target/linux/bcm27xx/patches-5.15/950-0699-ARM-dts-Permanently-disable-hdmi1-and-ddc1-on-CM4S.patch
new file mode 100644
index 0000000000..04b5081cf6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0699-ARM-dts-Permanently-disable-hdmi1-and-ddc1-on-CM4S.patch
@@ -0,0 +1,41 @@
+From 27dd29f219300bf3d4e5c26d5986ab6c73faa1e7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 2 Feb 2022 17:47:54 +0000
+Subject: [PATCH] ARM: dts: Permanently disable hdmi1 and ddc1 on CM4S
+
+CM4S has no HDMI1 output, so it is advisable to disable the controller
+and its I2C interface in software. This is ordinarily done by setting
+their status properties to "disabled", but the vc4-kms-v3d(-pi4)
+overlay enables both HDMIs and DDCs as part of the transfer of control
+from the VPU.
+
+Knobble the CM4S dts in such a way that the overlay applies
+successfully but the hdmi1 and ddc1 nodes remain disabled by changing
+the compatible string to something unrecognised.
+
+See: https://github.com/raspberrypi/linux/issues/4857
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-cm4s.dts | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4s.dts
+@@ -367,6 +367,16 @@
+ 	};
+ };
+ 
++/* Permanently disable HDMI1 */
++&hdmi1 {
++	compatible = "disabled";
++};
++
++/* Permanently disable DDC1 */
++&ddc1 {
++	compatible = "disabled";
++};
++
+ &leds {
+ 	act_led: led-act {
+ 		label = "led0";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch b/target/linux/bcm27xx/patches-5.15/950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch
new file mode 100644
index 0000000000..6693f86aea
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch
@@ -0,0 +1,55 @@
+From 01649f43afb30df3c7450fd09c04a5a8ee6cb2c1 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 3 Feb 2022 15:51:41 +0000
+Subject: [PATCH] net: phy: lan87xx: Decrease phy polling rate
+
+Polling at 100Hz for 1.5s consumes quite a bit of kworker time with no
+obvious benefit. Reduce that polling rate to ~6Hz.
+
+To further save CPU and power, defer the next poll if no energy is
+detected.
+
+See: https://github.com/raspberrypi/linux/issues/4780
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/net/phy/smsc.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/phy/smsc.c
++++ b/drivers/net/phy/smsc.c
+@@ -218,6 +218,8 @@ static int lan87xx_read_status(struct ph
+ 	int err = genphy_read_status(phydev);
+ 
+ 	if (!phydev->link && priv->energy_enable) {
++		int energy_detected;
++
+ 		/* Disable EDPD to wake up PHY */
+ 		int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
+ 		if (rc < 0)
+@@ -233,7 +235,7 @@ static int lan87xx_read_status(struct ph
+ 		 */
+ 		read_poll_timeout(phy_read, rc,
+ 				  rc & MII_LAN83C185_ENERGYON || rc < 0,
+-				  10000, 1500000, true, phydev,
++				  150000, 1500000, true, phydev,
+ 				  MII_LAN83C185_CTRL_STATUS);
+ 		if (rc < 0)
+ 			return rc;
+@@ -243,10 +245,16 @@ static int lan87xx_read_status(struct ph
+ 		if (rc < 0)
+ 			return rc;
+ 
++		energy_detected = !!(rc & MII_LAN83C185_ENERGYON);
++
+ 		rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
+ 			       rc | MII_LAN83C185_EDPWRDOWN);
+ 		if (rc < 0)
+ 			return rc;
++
++		/* Save CPU and power by deferring the next poll */
++		if (!energy_detected)
++			msleep(2000);
+ 	}
+ 
+ 	return err;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0701-drm-panel-Fix-compilation-warnings.patch b/target/linux/bcm27xx/patches-5.15/950-0701-drm-panel-Fix-compilation-warnings.patch
new file mode 100644
index 0000000000..4d47d93745
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0701-drm-panel-Fix-compilation-warnings.patch
@@ -0,0 +1,35 @@
+From 5ab880f474a2263625033aee6d9236f6c10af2b4 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Sat, 5 Feb 2022 18:41:07 +0000
+Subject: [PATCH] drm: panel: Fix compilation warnings
+
+See: https://github.com/raspberrypi/linux/pull/4812
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-ilitek-ili9806e.c | 2 +-
+ drivers/gpu/drm/panel/panel-tdo-y17p.c        | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/panel/panel-ilitek-ili9806e.c
++++ b/drivers/gpu/drm/panel/panel-ilitek-ili9806e.c
+@@ -421,7 +421,7 @@ static int ili9806_probe(struct spi_devi
+ 	if (!id)
+ 		return -ENODEV;
+ 
+-	ctx->bus_format = (u32)id->data;
++	ctx->bus_format = (u32)(uintptr_t)id->data;
+ 
+ 	spi_set_drvdata(spi, ctx);
+ 	ctx->spi = spi;
+--- a/drivers/gpu/drm/panel/panel-tdo-y17p.c
++++ b/drivers/gpu/drm/panel/panel-tdo-y17p.c
+@@ -218,7 +218,7 @@ static int tdo_y17p_probe(struct spi_dev
+ 	if (!id)
+ 		return -ENODEV;
+ 
+-	ctx->bus_format = (u32)id->data;
++	ctx->bus_format = (u32)(uintptr_t)id->data;
+ 
+ 	spi_set_drvdata(spi, ctx);
+ 	ctx->spi = spi;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0702-media-bcm2835-unicam-Handle-a-repeated-frame-start-w.patch b/target/linux/bcm27xx/patches-5.15/950-0702-media-bcm2835-unicam-Handle-a-repeated-frame-start-w.patch
new file mode 100644
index 0000000000..b9ea88f910
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0702-media-bcm2835-unicam-Handle-a-repeated-frame-start-w.patch
@@ -0,0 +1,63 @@
+From a7f335da17a96f0d54101f68d3c7e5baf3324b2c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 4 Feb 2022 16:12:35 +0000
+Subject: [PATCH] media: bcm2835-unicam: Handle a repeated frame start
+ with no end
+
+In the case of 2 frame starts being received with no frame end
+between, the queued buffer held in next_frm was lost as the
+pointer was overwritten with the dummy buffer.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../media/platform/bcm2835/bcm2835-unicam.c   | 29 +++++++++++++++----
+ 1 file changed, 24 insertions(+), 5 deletions(-)
+
+--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
+@@ -931,10 +931,14 @@ static irqreturn_t unicam_isr(int irq, v
+ 			 * as complete, as the HW will reuse that buffer.
+ 			 */
+ 			if (unicam->node[i].cur_frm &&
+-			    unicam->node[i].cur_frm != unicam->node[i].next_frm)
++			    unicam->node[i].cur_frm != unicam->node[i].next_frm) {
+ 				unicam_process_buffer_complete(&unicam->node[i],
+ 							       sequence);
+-			unicam->node[i].cur_frm = unicam->node[i].next_frm;
++				unicam->node[i].cur_frm = unicam->node[i].next_frm;
++				unicam->node[i].next_frm = NULL;
++			} else {
++				unicam->node[i].cur_frm = unicam->node[i].next_frm;
++			}
+ 		}
+ 		unicam->sequence++;
+ 	}
+@@ -957,10 +961,25 @@ static irqreturn_t unicam_isr(int irq, v
+ 					   i);
+ 			/*
+ 			 * Set the next frame output to go to a dummy frame
+-			 * if we have not managed to obtain another frame
+-			 * from the queue.
++			 * if no buffer currently queued.
+ 			 */
+-			unicam_schedule_dummy_buffer(&unicam->node[i]);
++			if (!unicam->node[i].next_frm ||
++			    unicam->node[i].next_frm == unicam->node[i].cur_frm) {
++				unicam_schedule_dummy_buffer(&unicam->node[i]);
++			} else if (unicam->node[i].cur_frm) {
++				/*
++				 * Repeated FS without FE. Hardware will have
++				 * swapped buffers, but the cur_frm doesn't
++				 * contain valid data. Return cur_frm to the
++				 * queue.
++				 */
++				spin_lock(&unicam->node[i].dma_queue_lock);
++				list_add_tail(&unicam->node[i].cur_frm->list,
++					      &unicam->node[i].dma_queue);
++				spin_unlock(&unicam->node[i].dma_queue_lock);
++				unicam->node[i].cur_frm = unicam->node[i].next_frm;
++				unicam->node[i].next_frm = NULL;
++			}
+ 		}
+ 
+ 		unicam_queue_event_sof(unicam);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0703-overlays-rpi-poe-plus-Fix-parameters.patch b/target/linux/bcm27xx/patches-5.15/950-0703-overlays-rpi-poe-plus-Fix-parameters.patch
new file mode 100644
index 0000000000..e4aca831d5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0703-overlays-rpi-poe-plus-Fix-parameters.patch
@@ -0,0 +1,120 @@
+From c19602f73386571bc9aed6059e2cce14f84eded4 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 7 Feb 2022 16:06:11 +0000
+Subject: [PATCH] overlays: rpi-poe(-plus): Fix parameters
+
+The support of PoE HATs is complicated because there are two methods to
+control them - via the firmware, and directly over I2C - the choice
+between the two methods depending on which side "owns" the i2c0 bus.
+
+The firmware determines the ownership of i2c0 by analysing the Device
+Tree after applying any dtoverlays and dtparams. For this reason the
+PoE HAT overlays have recently been applied by the firmware _after_
+config.txt has been processed, but this has prevented any user-supplied
+threshold settings from being applied - either because the parameters
+are unknown or because (after an explicit dtoverlay=rpi-poe) the
+firmware's reload of the overlay has overwritten the user's settings.
+
+Solve the problem by restructuring the rpi-poe overlays to support
+a mode switch _after_ the overlay has been merged, thereby allowing
+the overlays to be loaded _before_ config.txt is processed.
+
+There is a companion firmware patch that changes the point at which
+the overlays are loaded, and the parameter used to switch modes, but
+the updated overlays are still compatible with older firmware, albeit
+without working parameters.
+
+See: https://github.com/raspberrypi/firmware/issues/1689
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/rpi-poe-overlay.dts    | 15 ++++++++++-----
+ .../boot/dts/overlays/rpi-poe-plus-overlay.dts    | 15 +++++++++++++--
+ 2 files changed, 23 insertions(+), 7 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
+@@ -67,7 +67,7 @@
+ 
+ 	fragment@2 {
+ 		target-path = "/__overrides__";
+-		__overlay__ {
++		params: __overlay__ {
+ 			poe_fan_temp0 =		<&trip0>,"temperature:0";
+ 			poe_fan_temp0_hyst =	<&trip0>,"hysteresis:0";
+ 			poe_fan_temp1 =		<&trip1>,"temperature:0";
+@@ -76,6 +76,9 @@
+ 			poe_fan_temp2_hyst =	<&trip2>,"hysteresis:0";
+ 			poe_fan_temp3 =		<&trip3>,"temperature:0";
+ 			poe_fan_temp3_hyst =	<&trip3>,"hysteresis:0";
++			poe_fan_i2c =		<&fwpwm>,"status=disabled",
++						<&poe_mfd>,"status=okay",
++						<&fan>,"pwms:0=",<&poe_mfd_pwm>;
+ 		};
+ 	};
+ 
+@@ -91,15 +94,14 @@
+ 
+ 	fragment@4 {
+ 		target = <&i2c0>;
+-		__dormant__ {
++		i2c_bus: __overlay__ {
+ 			#address-cells = <1>;
+ 			#size-cells = <0>;
+-			status = "okay";
+ 
+ 			poe_mfd: poe@51 {
+ 				compatible = "raspberrypi,poe-core";
+ 				reg = <0x51>;
+-				status = "okay";
++				status = "disabled";
+ 
+ 				poe_mfd_pwm: poe_pwm@f0 {
+ 					compatible = "raspberrypi,poe-pwm";
+@@ -134,7 +136,10 @@
+ 		poe_fan_temp2_hyst =	<&trip2>,"hysteresis:0";
+ 		poe_fan_temp3 =		<&trip3>,"temperature:0";
+ 		poe_fan_temp3_hyst =	<&trip3>,"hysteresis:0";
+-		i2c =			<0>, "-3+4+5+6",
++		i2c =			<0>, "+5+6",
++					<&fwpwm>,"status=disabled",
++					<&i2c_bus>,"status=okay",
++					<&poe_mfd>,"status=okay",
+ 					<&fan>,"pwms:0=",<&poe_mfd_pwm>;
+ 	};
+ };
+--- a/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts
+@@ -18,7 +18,7 @@
+ 	};
+ 	fragment@11 {
+ 		target = <&poe_mfd>;
+-		__dormant__ {
++		__overlay__ {
+ 			rpi-poe-power-supply@f2 {
+ 				compatible = "raspberrypi,rpi-poe-power-supply";
+ 				reg = <0xf2>;
+@@ -28,7 +28,11 @@
+ 	};
+ 
+ 	__overrides__ {
+-		i2c =	<0>, "-3+4+5+6-10+11",
++		i2c =	<0>, "+5+6",
++			<&fwpwm>,"status=disabled",
++			<&rpi_poe_power_supply>,"status=disabled",
++			<&i2c_bus>,"status=okay",
++			<&poe_mfd>,"status=okay",
+ 			<&fan>,"pwms:0=",<&poe_mfd_pwm>;
+ 	};
+ };
+@@ -36,3 +40,10 @@
+ &fan {
+ 	cooling-levels = <0 32 64 128 255>;
+ };
++
++&params {
++	poe_fan_i2c = <&fwpwm>,"status=disabled",
++		      <&rpi_poe_power_supply>,"status=disabled",
++		      <&poe_mfd>,"status=okay",
++		      <&fan>,"pwms:0=",<&poe_mfd_pwm>;
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0704-dtoverlays-fix-overrides-in-vc4-kms-dpi-generic.patch b/target/linux/bcm27xx/patches-5.15/950-0704-dtoverlays-fix-overrides-in-vc4-kms-dpi-generic.patch
new file mode 100644
index 0000000000..d519ce2caa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0704-dtoverlays-fix-overrides-in-vc4-kms-dpi-generic.patch
@@ -0,0 +1,53 @@
+From 1d86afb04c942b2ef17a07cf5895b7ff20d5385b Mon Sep 17 00:00:00 2001
+From: Grigori Goronzy <greg@kinoho.net>
+Date: Wed, 9 Feb 2022 22:20:17 +0100
+Subject: [PATCH] dtoverlays: fix overrides in vc4-kms-dpi-generic
+
+Apparently broken by commit 3c033975. Introduce new names to allow for
+proper addressing of overrides.
+
+Signed-off-by: Grigori Goronzy <greg@kinoho.net>
+---
+ .../overlays/vc4-kms-dpi-generic-overlay.dts   | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -12,7 +12,7 @@
+ 
+ 	fragment@0 {
+ 		target = <&panel>;
+-		__overlay__  {
++		panel_generic: __overlay__  {
+ 			compatible = "panel-dpi";
+ 
+ 			width-mm = <154>;
+@@ -40,7 +40,7 @@
+ 
+ 	fragment@1 {
+ 		target = <&dpi>;
+-		__overlay__  {
++		dpi_node_generic: __overlay__  {
+ 			pinctrl-0 = <&dpi_18bit_gpio0>;
+ 		};
+ 	};
+@@ -63,12 +63,12 @@
+ 		width-mm = <&panel>, "width-mm:0";
+ 		height-mm = <&panel>, "height-mm:0";
+ 
+-		rgb565 = <&panel>, "bus-format:0=0x1017",
+-			<&dpi_node>, "pinctrl-0:0=",<&dpi_16bit_gpio0>;
+-		rgb666-padhi = <&panel>, "bus-format:0=0x1015",
+-			<&dpi_node>, "pinctrl-0:0=",<&dpi_18bit_cpadhi_gpio0>;
+-		rgb888 = <&panel>, "bus-format:0=0x100a",
+-			<&dpi_node>, "pinctrl-0:0=",<&dpi_gpio0>;
+-		bus-format = <&panel>, "bus-format:0";
++		rgb565 = <&panel_generic>, "bus-format:0=0x1017",
++			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_16bit_gpio0>;
++		rgb666-padhi = <&panel_generic>, "bus-format:0=0x1015",
++			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_18bit_cpadhi_gpio0>;
++		rgb888 = <&panel_generic>, "bus-format:0=0x100a",
++			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_gpio0>;
++		bus-format = <&panel_generic>, "bus-format:0";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0705-dtoverlays-add-rgb565-padhi-output-to-vc4-kms-dpi-ge.patch b/target/linux/bcm27xx/patches-5.15/950-0705-dtoverlays-add-rgb565-padhi-output-to-vc4-kms-dpi-ge.patch
new file mode 100644
index 0000000000..0d00d75a1b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0705-dtoverlays-add-rgb565-padhi-output-to-vc4-kms-dpi-ge.patch
@@ -0,0 +1,37 @@
+From c4d228323c9c302b355cfd27cd59809110d7c74e Mon Sep 17 00:00:00 2001
+From: Grigori Goronzy <greg@kinoho.net>
+Date: Wed, 9 Feb 2022 22:23:11 +0100
+Subject: [PATCH] dtoverlays: add rgb565-padhi output to
+ vc4-kms-dpi-generic
+
+This mode is used by some DPI based display adapters, such as the
+'VGA565' and 'VGA Zero' low-cost VGA adapters for the Raspberry Pi.
+
+Signed-off-by: Grigori Goronzy <greg@kinoho.net>
+---
+ arch/arm/boot/dts/overlays/README                          | 2 ++
+ arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts | 2 ++
+ 2 files changed, 4 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3649,6 +3649,8 @@ Params: clock-frequency         Display
+         width-mm                Define the screen width in mm
+         height-mm               Define the screen height in mm
+         rgb565                  Change to RGB565 output on GPIOs 0-19
++        rgb565-padhi            Change to RGB565 output on GPIOs 0-8, 12-17, and
++                                20-24
+         rgb666-padhi            Change to RGB666 output on GPIOs 0-9, 12-17, and
+                                 20-25
+         rgb888                  Change to RGB888 output on GPIOs 0-27
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -65,6 +65,8 @@
+ 
+ 		rgb565 = <&panel_generic>, "bus-format:0=0x1017",
+ 			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_16bit_gpio0>;
++		rgb565-padhi = <&panel_generic>, "bus-format:0=0x1020",
++			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_16bit_cpadhi_gpio0>;
+ 		rgb666-padhi = <&panel_generic>, "bus-format:0=0x1015",
+ 			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_18bit_cpadhi_gpio0>;
+ 		rgb888 = <&panel_generic>, "bus-format:0=0x100a",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0706-media-i2c-imx219-Scale-the-pixel-clock-rate-for-the-.patch b/target/linux/bcm27xx/patches-5.15/950-0706-media-i2c-imx219-Scale-the-pixel-clock-rate-for-the-.patch
new file mode 100644
index 0000000000..124117ce8b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0706-media-i2c-imx219-Scale-the-pixel-clock-rate-for-the-.patch
@@ -0,0 +1,129 @@
+From 055e3d70b0227e26d58b2efc4561eb21a3fbf640 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 8 Feb 2022 13:49:11 +0000
+Subject: [PATCH] media: i2c: imx219: Scale the pixel clock rate for
+ the 640x480 mode
+
+The 640x480 mode uses a special binning mode for high framerate operation where
+the pixel rate is effectively doubled. Account for this when setting up the
+pixel clock rate, and applying the vblank and exposure controls.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ drivers/media/i2c/imx219.c | 33 ++++++++++++++++++++++++++-------
+ 1 file changed, 26 insertions(+), 7 deletions(-)
+
+--- a/drivers/media/i2c/imx219.c
++++ b/drivers/media/i2c/imx219.c
+@@ -153,6 +153,9 @@ struct imx219_mode {
+ 
+ 	/* Default register values */
+ 	struct imx219_reg_list reg_list;
++
++	/* Relative pixel clock rate factor for the mode. */
++	unsigned int rate_factor;
+ };
+ 
+ /*
+@@ -495,6 +498,7 @@ static const struct imx219_mode supporte
+ 			.num_of_regs = ARRAY_SIZE(mode_3280x2464_regs),
+ 			.regs = mode_3280x2464_regs,
+ 		},
++		.rate_factor = 1,
+ 	},
+ 	{
+ 		/* 1080P 30fps cropped */
+@@ -511,6 +515,7 @@ static const struct imx219_mode supporte
+ 			.num_of_regs = ARRAY_SIZE(mode_1920_1080_regs),
+ 			.regs = mode_1920_1080_regs,
+ 		},
++		.rate_factor = 1,
+ 	},
+ 	{
+ 		/* 2x2 binned 30fps mode */
+@@ -527,6 +532,7 @@ static const struct imx219_mode supporte
+ 			.num_of_regs = ARRAY_SIZE(mode_1640_1232_regs),
+ 			.regs = mode_1640_1232_regs,
+ 		},
++		.rate_factor = 1,
+ 	},
+ 	{
+ 		/* 640x480 30fps mode */
+@@ -543,6 +549,11 @@ static const struct imx219_mode supporte
+ 			.num_of_regs = ARRAY_SIZE(mode_640_480_regs),
+ 			.regs = mode_640_480_regs,
+ 		},
++		/*
++		 * This mode uses a special 2x2 binning that doubles the
++		 * the internal pixel clock rate.
++		 */
++		.rate_factor = 2,
+ 	},
+ };
+ 
+@@ -765,7 +776,8 @@ static int imx219_set_ctrl(struct v4l2_c
+ 		break;
+ 	case V4L2_CID_EXPOSURE:
+ 		ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE,
+-				       IMX219_REG_VALUE_16BIT, ctrl->val);
++				       IMX219_REG_VALUE_16BIT,
++				       ctrl->val / imx219->mode->rate_factor);
+ 		break;
+ 	case V4L2_CID_DIGITAL_GAIN:
+ 		ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN,
+@@ -785,7 +797,8 @@ static int imx219_set_ctrl(struct v4l2_c
+ 	case V4L2_CID_VBLANK:
+ 		ret = imx219_write_reg(imx219, IMX219_REG_VTS,
+ 				       IMX219_REG_VALUE_16BIT,
+-				       imx219->mode->height + ctrl->val);
++				       (imx219->mode->height + ctrl->val) /
++						imx219->mode->rate_factor);
+ 		break;
+ 	case V4L2_CID_TEST_PATTERN_RED:
+ 		ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED,
+@@ -957,7 +970,7 @@ static int imx219_set_pad_format(struct
+ 	struct imx219 *imx219 = to_imx219(sd);
+ 	const struct imx219_mode *mode;
+ 	struct v4l2_mbus_framefmt *framefmt;
+-	int exposure_max, exposure_def, hblank;
++	int exposure_max, exposure_def, hblank, pixel_rate;
+ 	unsigned int i;
+ 
+ 	if (fmt->pad >= NUM_PADS)
+@@ -1018,6 +1031,12 @@ static int imx219_set_pad_format(struct
+ 			hblank = IMX219_PPL_DEFAULT - mode->width;
+ 			__v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank,
+ 						 1, hblank);
++
++			/* Scale the pixel rate based on the mode specific factor */
++			pixel_rate =
++				IMX219_PIXEL_RATE * imx219->mode->rate_factor;
++			__v4l2_ctrl_modify_range(imx219->pixel_rate, pixel_rate,
++						 pixel_rate, 1, pixel_rate);
+ 		}
+ 	} else {
+ 		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+@@ -1362,7 +1381,7 @@ static int imx219_init_controls(struct i
+ 	struct v4l2_ctrl_handler *ctrl_hdlr;
+ 	unsigned int height = imx219->mode->height;
+ 	struct v4l2_fwnode_device_properties props;
+-	int exposure_max, exposure_def, hblank;
++	int exposure_max, exposure_def, hblank, pixel_rate;
+ 	int i, ret;
+ 
+ 	ctrl_hdlr = &imx219->ctrl_handler;
+@@ -1374,11 +1393,11 @@ static int imx219_init_controls(struct i
+ 	ctrl_hdlr->lock = &imx219->mutex;
+ 
+ 	/* By default, PIXEL_RATE is read only */
++	pixel_rate = IMX219_PIXEL_RATE * imx219->mode->rate_factor;
+ 	imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+ 					       V4L2_CID_PIXEL_RATE,
+-					       IMX219_PIXEL_RATE,
+-					       IMX219_PIXEL_RATE, 1,
+-					       IMX219_PIXEL_RATE);
++					       pixel_rate, pixel_rate,
++					       1, pixel_rate);
+ 
+ 	imx219->link_freq =
+ 		v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx219_ctrl_ops,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0707-drm-vc4-For-DPI-MEDIA_BUS_FMT_RGB565_1X16-is-mode-1-.patch b/target/linux/bcm27xx/patches-5.15/950-0707-drm-vc4-For-DPI-MEDIA_BUS_FMT_RGB565_1X16-is-mode-1-.patch
new file mode 100644
index 0000000000..9e4b56d111
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0707-drm-vc4-For-DPI-MEDIA_BUS_FMT_RGB565_1X16-is-mode-1-.patch
@@ -0,0 +1,25 @@
+From 4626e370de018aed097d54247bae5a29391198ee Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 14 Feb 2022 15:34:51 +0000
+Subject: [PATCH] drm/vc4: For DPI, MEDIA_BUS_FMT_RGB565_1X16 is mode
+ 1, not 3.
+
+The mapping is incorrect for RGB565_1X16 as it should be
+DPI_FORMAT_18BIT_666_RGB_1 instead of DPI_FORMAT_18BIT_666_RGB_3.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dpi.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dpi.c
++++ b/drivers/gpu/drm/vc4/vc4_dpi.c
+@@ -188,7 +188,7 @@ static void vc4_dpi_encoder_enable(struc
+ 						       DPI_ORDER);
+ 				break;
+ 			case MEDIA_BUS_FMT_RGB565_1X16:
+-				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
++				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_1,
+ 						       DPI_FORMAT);
+ 				break;
+ 			case MEDIA_BUS_FMT_RGB565_1X24_CPADHI:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0708-dtoverlays-Add-additional-mappings-to-vc4-kms-dpi-ge.patch b/target/linux/bcm27xx/patches-5.15/950-0708-dtoverlays-Add-additional-mappings-to-vc4-kms-dpi-ge.patch
new file mode 100644
index 0000000000..3cc03de772
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0708-dtoverlays-Add-additional-mappings-to-vc4-kms-dpi-ge.patch
@@ -0,0 +1,45 @@
+From 4b3fe84c0de9fe0d6669abb0ec8ae628b65b4a2e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 14 Feb 2022 15:59:32 +0000
+Subject: [PATCH] dtoverlays: Add additional mappings to
+ vc4-kms-dpi-generic
+
+Adds mappings for bgr666, bgr666-padhi, and bgr888.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README                          | 4 ++++
+ arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts | 5 +++++
+ 2 files changed, 9 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3651,8 +3651,12 @@ Params: clock-frequency         Display
+         rgb565                  Change to RGB565 output on GPIOs 0-19
+         rgb565-padhi            Change to RGB565 output on GPIOs 0-8, 12-17, and
+                                 20-24
++        bgr666                  Change to BGR666 output on GPIOs 0-21.
++        bgr666-padhi            Change to BGR666 output on GPIOs 0-9, 12-17, and
++                                20-25
+         rgb666-padhi            Change to RGB666 output on GPIOs 0-9, 12-17, and
+                                 20-25
++        bgr888                  Change to BGR888 output on GPIOs 0-27
+         rgb888                  Change to RGB888 output on GPIOs 0-27
+         bus-format              Override the bus format for a MEDIA_BUS_FMT_*
+                                 value. NB also overridden by rgbXXX overrides.
+--- a/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
+@@ -67,8 +67,13 @@
+ 			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_16bit_gpio0>;
+ 		rgb565-padhi = <&panel_generic>, "bus-format:0=0x1020",
+ 			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_16bit_cpadhi_gpio0>;
++		bgr666 = <&panel_generic>, "bus-format:0=0x101f";
++		bgr666-padhi = <&panel_generic>, "bus-format:0=0x101e",
++			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_18bit_cpadhi_gpio0>;
+ 		rgb666-padhi = <&panel_generic>, "bus-format:0=0x1015",
+ 			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_18bit_cpadhi_gpio0>;
++		bgr888 = <&panel_generic>, "bus-format:0=0x1013",
++			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_gpio0>;
+ 		rgb888 = <&panel_generic>, "bus-format:0=0x100a",
+ 			<&dpi_node_generic>, "pinctrl-0:0=",<&dpi_gpio0>;
+ 		bus-format = <&panel_generic>, "bus-format:0";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0709-drm-dsi-Document-the-meaning-and-spec-references-for.patch b/target/linux/bcm27xx/patches-5.15/950-0709-drm-dsi-Document-the-meaning-and-spec-references-for.patch
new file mode 100644
index 0000000000..b47c39f335
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0709-drm-dsi-Document-the-meaning-and-spec-references-for.patch
@@ -0,0 +1,76 @@
+From 67324ae79d80aab68ab9c91a547f3cb25759d077 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 17 Dec 2021 13:36:52 +0000
+Subject: [PATCH] drm/dsi: Document the meaning and spec references for
+ MIPI_DSI_MODE_*
+
+The MIPI_DSI_MODE_* flags have fairly terse descriptions and no reference
+to the DSI specification as to their exact meaning. Usage has therefore
+been rather fluid.
+
+Extend the descriptions and provide references to the part of the
+MIPI DSI specification regarding what they mean.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ include/drm/drm_mipi_dsi.h | 38 ++++++++++++++++++++++++++------------
+ 1 file changed, 26 insertions(+), 12 deletions(-)
+
+--- a/include/drm/drm_mipi_dsi.h
++++ b/include/drm/drm_mipi_dsi.h
+@@ -113,29 +113,43 @@ struct mipi_dsi_host *of_find_mipi_dsi_h
+ 
+ /* DSI mode flags */
+ 
+-/* video mode */
++/* Video mode display.
++ * Not set denotes a command mode display.
++ */
+ #define MIPI_DSI_MODE_VIDEO		BIT(0)
+-/* video burst mode */
++/* Video burst mode.
++ * Link frequency to be configured via platform configuration.
++ * This should always be set in conjunction with MIPI_DSI_MODE_VIDEO.
++ * (DSI spec V1.1 8.11.4)
++ */
+ #define MIPI_DSI_MODE_VIDEO_BURST	BIT(1)
+-/* video pulse mode */
++/* Video pulse mode.
++ * Not set denotes sync event mode. (DSI spec V1.1 8.11.2)
++ */
+ #define MIPI_DSI_MODE_VIDEO_SYNC_PULSE	BIT(2)
+-/* enable auto vertical count mode */
++/* Enable auto vertical count mode */
+ #define MIPI_DSI_MODE_VIDEO_AUTO_VERT	BIT(3)
+-/* enable hsync-end packets in vsync-pulse and v-porch area */
++/* Enable hsync-end packets in vsync-pulse and v-porch area */
+ #define MIPI_DSI_MODE_VIDEO_HSE		BIT(4)
+-/* disable hfront-porch area */
++/* Transmit NULL packets or LP mode during hfront-porch area.
++ * Not set denotes sending a blanking packet instead. (DSI spec V1.1 8.11.1)
++ */
+ #define MIPI_DSI_MODE_VIDEO_NO_HFP	BIT(5)
+-/* disable hback-porch area */
++/* Transmit NULL packets or LP mode during hback-porch area.
++ * Not set denotes sending a blanking packet instead. (DSI spec V1.1 8.11.1)
++ */
+ #define MIPI_DSI_MODE_VIDEO_NO_HBP	BIT(6)
+-/* disable hsync-active area */
++/* Transmit NULL packets or LP mode during hsync-active area.
++ * Not set denotes sending a blanking packet instead. (DSI spec V1.1 8.11.1)
++ */
+ #define MIPI_DSI_MODE_VIDEO_NO_HSA	BIT(7)
+-/* flush display FIFO on vsync pulse */
++/* Flush display FIFO on vsync pulse */
+ #define MIPI_DSI_MODE_VSYNC_FLUSH	BIT(8)
+-/* disable EoT packets in HS mode */
++/* Disable EoT packets in HS mode. (DSI spec V1.1 8.1)  */
+ #define MIPI_DSI_MODE_NO_EOT_PACKET	BIT(9)
+-/* device supports non-continuous clock behavior (DSI spec 5.6.1) */
++/* Device supports non-continuous clock behavior (DSI spec V1.1 5.6.1) */
+ #define MIPI_DSI_CLOCK_NON_CONTINUOUS	BIT(10)
+-/* transmit data in low power */
++/* Transmit data in low power */
+ #define MIPI_DSI_MODE_LPM		BIT(11)
+ 
+ enum mipi_dsi_pixel_format {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0710-drm-bridge-tc358762-Ignore-EPROBE_DEFER-when-logging.patch b/target/linux/bcm27xx/patches-5.15/950-0710-drm-bridge-tc358762-Ignore-EPROBE_DEFER-when-logging.patch
new file mode 100644
index 0000000000..872e59212c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0710-drm-bridge-tc358762-Ignore-EPROBE_DEFER-when-logging.patch
@@ -0,0 +1,25 @@
+From f8507ec6caab1faf9bdb32257079094ca3600bfc Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 20 Jan 2022 17:29:36 +0000
+Subject: [PATCH] drm/bridge: tc358762: Ignore EPROBE_DEFER when
+ logging errors
+
+mipi_dsi_attach can fail due to resources not being available
+yet, therefore do not log error messages should they occur.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/bridge/tc358762.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/bridge/tc358762.c
++++ b/drivers/gpu/drm/bridge/tc358762.c
+@@ -243,7 +243,7 @@ static int tc358762_probe(struct mipi_ds
+ 	ret = mipi_dsi_attach(dsi);
+ 	if (ret < 0) {
+ 		drm_bridge_remove(&ctx->bridge);
+-		dev_err(dev, "failed to attach dsi\n");
++		dev_err_probe(dev, ret, "failed to attach dsi\n");
+ 	}
+ 
+ 	return ret;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch b/target/linux/bcm27xx/patches-5.15/950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch
new file mode 100644
index 0000000000..0d14eeccd4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch
@@ -0,0 +1,76 @@
+From 9e26092eb098dec04ece28c05f859bc4add249c0 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 30 Sep 2021 17:51:16 +0100
+Subject: [PATCH] drm/vc4: Rename bridge to out_bridge
+
+In preparation for converting the encoder to being a bridge,
+rename the variable holding the next bridge in the chain to
+out_bridge, so that our bridge can be called bridge.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -553,7 +553,7 @@ struct vc4_dsi {
+ 
+ 	struct mipi_dsi_host dsi_host;
+ 	struct drm_encoder *encoder;
+-	struct drm_bridge *bridge;
++	struct drm_bridge *out_bridge;
+ 	struct list_head bridge_chain;
+ 
+ 	void __iomem *regs;
+@@ -804,7 +804,7 @@ static void vc4_dsi_encoder_disable(stru
+ 		if (iter->funcs->disable)
+ 			iter->funcs->disable(iter);
+ 
+-		if (iter == dsi->bridge)
++		if (iter == dsi->out_bridge)
+ 			break;
+ 	}
+ 
+@@ -1667,7 +1667,7 @@ static int vc4_dsi_bind(struct device *d
+ 	}
+ 
+ 	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
+-					  &panel, &dsi->bridge);
++					  &panel, &dsi->out_bridge);
+ 	if (ret) {
+ 		/* If the bridge or panel pointed by dev->of_node is not
+ 		 * enabled, just return 0 here so that we don't prevent the DRM
+@@ -1682,10 +1682,10 @@ static int vc4_dsi_bind(struct device *d
+ 	}
+ 
+ 	if (panel) {
+-		dsi->bridge = devm_drm_panel_bridge_add_typed(dev, panel,
+-							      DRM_MODE_CONNECTOR_DSI);
+-		if (IS_ERR(dsi->bridge)) {
+-			ret = PTR_ERR(dsi->bridge);
++		dsi->out_bridge = devm_drm_panel_bridge_add_typed(dev, panel,
++								  DRM_MODE_CONNECTOR_DSI);
++		if (IS_ERR(dsi->out_bridge)) {
++			ret = PTR_ERR(dsi->out_bridge);
+ 			goto err_free_dma;
+ 		}
+ 	}
+@@ -1704,7 +1704,7 @@ static int vc4_dsi_bind(struct device *d
+ 	drm_simple_encoder_init(drm, dsi->encoder, DRM_MODE_ENCODER_DSI);
+ 	drm_encoder_helper_add(dsi->encoder, &vc4_dsi_encoder_helper_funcs);
+ 
+-	ret = drm_bridge_attach(dsi->encoder, dsi->bridge, NULL, 0);
++	ret = drm_bridge_attach(dsi->encoder, dsi->out_bridge, NULL, 0);
+ 	if (ret) {
+ 		dev_err(dev, "bridge attach failed: %d\n", ret);
+ 		goto err_free_dma;
+@@ -1741,7 +1741,7 @@ static void vc4_dsi_unbind(struct device
+ {
+ 	struct vc4_dsi *dsi = dev_get_drvdata(dev);
+ 
+-	if (dsi->bridge)
++	if (dsi->out_bridge)
+ 		pm_runtime_disable(dev);
+ 
+ 	/*
diff --git a/target/linux/bcm27xx/patches-5.15/950-0712-drm-vc4-Move-DSI-initialisation-to-encoder_mode_set.patch b/target/linux/bcm27xx/patches-5.15/950-0712-drm-vc4-Move-DSI-initialisation-to-encoder_mode_set.patch
new file mode 100644
index 0000000000..1c51aa16b7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0712-drm-vc4-Move-DSI-initialisation-to-encoder_mode_set.patch
@@ -0,0 +1,65 @@
+From d1f7e9e87961139c7da9a570b1858a8841a32d6e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 7 Feb 2022 17:14:51 +0000
+Subject: [PATCH] drm/vc4: Move DSI initialisation to encoder_mode_set.
+
+Breaking the bridge chain does not work for atomic bridges/panels
+and generally causes issues.
+We need to initialise the DSI host before the bridge pre_enables
+are called, so move that to encoder_mode_set in the same way that
+dw-mipi-dsi does.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 17 +++++++++++++----
+ 1 file changed, 13 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -872,19 +872,19 @@ static bool vc4_dsi_encoder_mode_fixup(s
+ 	return true;
+ }
+ 
+-static void vc4_dsi_encoder_enable(struct drm_encoder *encoder)
++static void vc4_dsi_encoder_mode_set(struct drm_encoder *encoder,
++				     struct drm_display_mode *user_mode,
++				     struct drm_display_mode *adjusted_mode)
+ {
+-	struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
+ 	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+ 	struct vc4_dsi *dsi = vc4_encoder->dsi;
+ 	struct device *dev = &dsi->pdev->dev;
+ 	bool debug_dump_regs = false;
+-	struct drm_bridge *iter;
+ 	unsigned long hs_clock;
+ 	u32 ui_ns;
+ 	/* Minimum LP state duration in escape clock cycles. */
+ 	u32 lpx = dsi_esc_timing(60);
+-	unsigned long pixel_clock_hz = mode->clock * 1000;
++	unsigned long pixel_clock_hz = adjusted_mode->clock * 1000;
+ 	unsigned long dsip_clock;
+ 	unsigned long phy_clock;
+ 	int ret;
+@@ -1111,6 +1111,14 @@ static void vc4_dsi_encoder_enable(struc
+ 		       ~DSI_PORT_BIT(PHY_AFEC0_RESET));
+ 
+ 	vc4_dsi_ulps(dsi, false);
++}
++
++static void vc4_dsi_encoder_enable(struct drm_encoder *encoder)
++{
++	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
++	struct vc4_dsi *dsi = vc4_encoder->dsi;
++	bool debug_dump_regs = false;
++	struct drm_bridge *iter;
+ 
+ 	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
+ 		if (iter->funcs->pre_enable)
+@@ -1376,6 +1384,7 @@ static const struct drm_encoder_helper_f
+ 	.disable = vc4_dsi_encoder_disable,
+ 	.enable = vc4_dsi_encoder_enable,
+ 	.mode_fixup = vc4_dsi_encoder_mode_fixup,
++	.mode_set = vc4_dsi_encoder_mode_set,
+ };
+ 
+ static const struct vc4_dsi_variant bcm2711_dsi1_variant = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch b/target/linux/bcm27xx/patches-5.15/950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch
new file mode 100644
index 0000000000..7c60e7763b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch
@@ -0,0 +1,110 @@
+From b5e5e7a57e2a0475826df547921d2bc72f0daf02 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Dec 2021 17:44:49 +0000
+Subject: [PATCH] drm/vc4: Remove splitting the bridge chain from the
+ driver.
+
+Splitting the bridge chain fails for atomic bridges as the
+framework can't add the relevant state in
+drm_atomic_add_encoder_bridges.
+The chain was split because we needed to power up before
+calling pre_enable, but that is now done in mode_set, and will
+move into the framework.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 38 -----------------------------------
+ 1 file changed, 38 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -554,7 +554,6 @@ struct vc4_dsi {
+ 	struct mipi_dsi_host dsi_host;
+ 	struct drm_encoder *encoder;
+ 	struct drm_bridge *out_bridge;
+-	struct list_head bridge_chain;
+ 
+ 	void __iomem *regs;
+ 
+@@ -798,23 +797,9 @@ static void vc4_dsi_encoder_disable(stru
+ 	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+ 	struct vc4_dsi *dsi = vc4_encoder->dsi;
+ 	struct device *dev = &dsi->pdev->dev;
+-	struct drm_bridge *iter;
+-
+-	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
+-		if (iter->funcs->disable)
+-			iter->funcs->disable(iter);
+-
+-		if (iter == dsi->out_bridge)
+-			break;
+-	}
+ 
+ 	vc4_dsi_ulps(dsi, true);
+ 
+-	list_for_each_entry_from(iter, &dsi->bridge_chain, chain_node) {
+-		if (iter->funcs->post_disable)
+-			iter->funcs->post_disable(iter);
+-	}
+-
+ 	clk_disable_unprepare(dsi->pll_phy_clock);
+ 	clk_disable_unprepare(dsi->escape_clock);
+ 	clk_disable_unprepare(dsi->pixel_clock);
+@@ -1118,12 +1103,6 @@ static void vc4_dsi_encoder_enable(struc
+ 	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+ 	struct vc4_dsi *dsi = vc4_encoder->dsi;
+ 	bool debug_dump_regs = false;
+-	struct drm_bridge *iter;
+-
+-	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
+-		if (iter->funcs->pre_enable)
+-			iter->funcs->pre_enable(iter);
+-	}
+ 
+ 	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
+ 		DSI_PORT_WRITE(DISP0_CTRL,
+@@ -1140,11 +1119,6 @@ static void vc4_dsi_encoder_enable(struc
+ 			       DSI_DISP0_ENABLE);
+ 	}
+ 
+-	list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {
+-		if (iter->funcs->enable)
+-			iter->funcs->enable(iter);
+-	}
+-
+ 	if (debug_dump_regs) {
+ 		struct drm_printer p = drm_info_printer(&dsi->pdev->dev);
+ 		dev_info(&dsi->pdev->dev, "DSI regs after:\n");
+@@ -1578,7 +1552,6 @@ static int vc4_dsi_bind(struct device *d
+ 	if (!vc4_dsi_encoder)
+ 		return -ENOMEM;
+ 
+-	INIT_LIST_HEAD(&dsi->bridge_chain);
+ 	vc4_dsi_encoder->base.type = dsi->variant->port ?
+ 			VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0;
+ 	vc4_dsi_encoder->dsi = dsi;
+@@ -1718,12 +1691,6 @@ static int vc4_dsi_bind(struct device *d
+ 		dev_err(dev, "bridge attach failed: %d\n", ret);
+ 		goto err_free_dma;
+ 	}
+-	/* Disable the atomic helper calls into the bridge.  We
+-	 * manually call the bridge pre_enable / enable / etc. calls
+-	 * from our driver, since we need to sequence them within the
+-	 * encoder's enable/disable paths.
+-	 */
+-	list_splice_init(&dsi->encoder->bridge_chain, &dsi->bridge_chain);
+ 
+ 	vc4_debugfs_add_regset32(drm, dsi->variant->debugfs_name, &dsi->regset);
+ 
+@@ -1753,11 +1720,6 @@ static void vc4_dsi_unbind(struct device
+ 	if (dsi->out_bridge)
+ 		pm_runtime_disable(dev);
+ 
+-	/*
+-	 * Restore the bridge_chain so the bridge detach procedure can happen
+-	 * normally.
+-	 */
+-	list_splice_init(&dsi->bridge_chain, &dsi->encoder->bridge_chain);
+ 	drm_encoder_cleanup(dsi->encoder);
+ 
+ 	if (dsi->reg_dma_chan) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0714-drm-vc4-Convert-vc4_dsi-to-use-atomic-enable-disable.patch b/target/linux/bcm27xx/patches-5.15/950-0714-drm-vc4-Convert-vc4_dsi-to-use-atomic-enable-disable.patch
new file mode 100644
index 0000000000..46027a4783
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0714-drm-vc4-Convert-vc4_dsi-to-use-atomic-enable-disable.patch
@@ -0,0 +1,85 @@
+From 2a6dfa1110ab7d6d5fd4fcce0040219346e89498 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Dec 2021 17:47:14 +0000
+Subject: [PATCH] drm/vc4: Convert vc4_dsi to use atomic
+ enable/disable/mode_set.
+
+The atomic calls are preferred as the non-atomic ones
+are deprecated. In preparation for conversion to a bridge,
+switch to the atomic calls.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 23 +++++++++++++++--------
+ 1 file changed, 15 insertions(+), 8 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -792,7 +792,8 @@ dsi_esc_timing(u32 ns)
+ 	return DIV_ROUND_UP(ns, ESC_TIME_NS);
+ }
+ 
+-static void vc4_dsi_encoder_disable(struct drm_encoder *encoder)
++static void vc4_dsi_encoder_disable(struct drm_encoder *encoder,
++				    struct drm_atomic_state *state)
+ {
+ 	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+ 	struct vc4_dsi *dsi = vc4_encoder->dsi;
+@@ -858,18 +859,19 @@ static bool vc4_dsi_encoder_mode_fixup(s
+ }
+ 
+ static void vc4_dsi_encoder_mode_set(struct drm_encoder *encoder,
+-				     struct drm_display_mode *user_mode,
+-				     struct drm_display_mode *adjusted_mode)
++				     struct drm_crtc_state *crtc_state,
++				     struct drm_connector_state *conn_state)
+ {
+ 	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+ 	struct vc4_dsi *dsi = vc4_encoder->dsi;
+ 	struct device *dev = &dsi->pdev->dev;
++	const struct drm_display_mode *mode;
+ 	bool debug_dump_regs = false;
+ 	unsigned long hs_clock;
+ 	u32 ui_ns;
+ 	/* Minimum LP state duration in escape clock cycles. */
+ 	u32 lpx = dsi_esc_timing(60);
+-	unsigned long pixel_clock_hz = adjusted_mode->clock * 1000;
++	unsigned long pixel_clock_hz;
+ 	unsigned long dsip_clock;
+ 	unsigned long phy_clock;
+ 	int ret;
+@@ -886,6 +888,10 @@ static void vc4_dsi_encoder_mode_set(str
+ 		drm_print_regset32(&p, &dsi->regset);
+ 	}
+ 
++	mode = &crtc_state->adjusted_mode;
++
++	pixel_clock_hz = mode->clock * 1000;
++
+ 	/* Round up the clk_set_rate() request slightly, since
+ 	 * PLLD_DSI1 is an integer divider and its rate selection will
+ 	 * never round up.
+@@ -1098,7 +1104,8 @@ static void vc4_dsi_encoder_mode_set(str
+ 	vc4_dsi_ulps(dsi, false);
+ }
+ 
+-static void vc4_dsi_encoder_enable(struct drm_encoder *encoder)
++static void vc4_dsi_encoder_enable(struct drm_encoder *encoder,
++				   struct drm_atomic_state *state)
+ {
+ 	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+ 	struct vc4_dsi *dsi = vc4_encoder->dsi;
+@@ -1355,10 +1362,10 @@ static const struct mipi_dsi_host_ops vc
+ };
+ 
+ static const struct drm_encoder_helper_funcs vc4_dsi_encoder_helper_funcs = {
+-	.disable = vc4_dsi_encoder_disable,
+-	.enable = vc4_dsi_encoder_enable,
++	.atomic_disable = vc4_dsi_encoder_disable,
++	.atomic_enable = vc4_dsi_encoder_enable,
+ 	.mode_fixup = vc4_dsi_encoder_mode_fixup,
+-	.mode_set = vc4_dsi_encoder_mode_set,
++	.atomic_mode_set = vc4_dsi_encoder_mode_set,
+ };
+ 
+ static const struct vc4_dsi_variant bcm2711_dsi1_variant = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch b/target/linux/bcm27xx/patches-5.15/950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch
new file mode 100644
index 0000000000..74cae273f8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch
@@ -0,0 +1,264 @@
+From 3e6793632310f9991b75c3095a9795b6a8d1d859 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 15 Dec 2021 17:57:45 +0000
+Subject: [PATCH] drm/vc4: Convert vc4_dsi to using a bridge instead of
+ encoder.
+
+Remove the encoder functions, and create a bridge attached to
+this dumb encoder which implements the same functionality.
+
+As a bridge has state which an encoder doesn't, we need to
+add the state management functions as well.
+
+As there is no bridge atomic_mode_set, move the initialisation
+code that was in mode_set into _pre_enable.
+The code to actually enable and disable sending video are split
+from the general control into _enable and _disable.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 124 ++++++++++++++++++++++++----------
+ 1 file changed, 90 insertions(+), 34 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -554,6 +554,7 @@ struct vc4_dsi {
+ 	struct mipi_dsi_host dsi_host;
+ 	struct drm_encoder *encoder;
+ 	struct drm_bridge *out_bridge;
++	struct drm_bridge bridge;
+ 
+ 	void __iomem *regs;
+ 
+@@ -655,6 +656,12 @@ to_vc4_dsi_encoder(struct drm_encoder *e
+ 	return container_of(encoder, struct vc4_dsi_encoder, base.base);
+ }
+ 
++static inline struct vc4_dsi *
++bridge_to_vc4_dsi(struct drm_bridge *bridge)
++{
++	return container_of(bridge, struct vc4_dsi, bridge);
++}
++
+ static const struct debugfs_reg32 dsi0_regs[] = {
+ 	VC4_REG32(DSI0_CTRL),
+ 	VC4_REG32(DSI0_STAT),
+@@ -792,11 +799,21 @@ dsi_esc_timing(u32 ns)
+ 	return DIV_ROUND_UP(ns, ESC_TIME_NS);
+ }
+ 
+-static void vc4_dsi_encoder_disable(struct drm_encoder *encoder,
+-				    struct drm_atomic_state *state)
++static void vc4_dsi_bridge_disable(struct drm_bridge *bridge,
++				   struct drm_bridge_state *state)
++{
++	struct vc4_dsi *dsi = bridge_to_vc4_dsi(bridge);
++	u32 disp0_ctrl;
++
++	disp0_ctrl = DSI_PORT_READ(DISP0_CTRL);
++	disp0_ctrl &= ~DSI_DISP0_ENABLE;
++	DSI_PORT_WRITE(DISP0_CTRL, disp0_ctrl);
++}
++
++static void vc4_dsi_bridge_post_disable(struct drm_bridge *bridge,
++					struct drm_bridge_state *state)
+ {
+-	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+-	struct vc4_dsi *dsi = vc4_encoder->dsi;
++	struct vc4_dsi *dsi = bridge_to_vc4_dsi(bridge);
+ 	struct device *dev = &dsi->pdev->dev;
+ 
+ 	vc4_dsi_ulps(dsi, true);
+@@ -821,12 +838,11 @@ static void vc4_dsi_encoder_disable(stru
+  * higher-than-expected clock rate to the panel, but that's what the
+  * firmware does too.
+  */
+-static bool vc4_dsi_encoder_mode_fixup(struct drm_encoder *encoder,
+-				       const struct drm_display_mode *mode,
+-				       struct drm_display_mode *adjusted_mode)
++static bool vc4_dsi_bridge_mode_fixup(struct drm_bridge *bridge,
++				      const struct drm_display_mode *mode,
++				      struct drm_display_mode *adjusted_mode)
+ {
+-	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+-	struct vc4_dsi *dsi = vc4_encoder->dsi;
++	struct vc4_dsi *dsi = bridge_to_vc4_dsi(bridge);
+ 	struct clk *phy_parent = clk_get_parent(dsi->pll_phy_clock);
+ 	unsigned long parent_rate = clk_get_rate(phy_parent);
+ 	unsigned long pixel_clock_hz = mode->clock * 1000;
+@@ -858,16 +874,18 @@ static bool vc4_dsi_encoder_mode_fixup(s
+ 	return true;
+ }
+ 
+-static void vc4_dsi_encoder_mode_set(struct drm_encoder *encoder,
+-				     struct drm_crtc_state *crtc_state,
+-				     struct drm_connector_state *conn_state)
++static void vc4_dsi_bridge_pre_enable(struct drm_bridge *bridge,
++				      struct drm_bridge_state *old_state)
+ {
+-	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+-	struct vc4_dsi *dsi = vc4_encoder->dsi;
++	struct drm_atomic_state *state = old_state->base.state;
++	struct vc4_dsi *dsi = bridge_to_vc4_dsi(bridge);
++	const struct drm_crtc_state *crtc_state;
+ 	struct device *dev = &dsi->pdev->dev;
+ 	const struct drm_display_mode *mode;
++	struct drm_connector *connector;
+ 	bool debug_dump_regs = false;
+ 	unsigned long hs_clock;
++	struct drm_crtc *crtc;
+ 	u32 ui_ns;
+ 	/* Minimum LP state duration in escape clock cycles. */
+ 	u32 lpx = dsi_esc_timing(60);
+@@ -888,6 +906,14 @@ static void vc4_dsi_encoder_mode_set(str
+ 		drm_print_regset32(&p, &dsi->regset);
+ 	}
+ 
++	/*
++	 * Retrieve the CRTC adjusted mode. This requires a little dance to go
++	 * from the bridge to the encoder, to the connector and to the CRTC.
++	 */
++	connector = drm_atomic_get_new_connector_for_encoder(state,
++							     bridge->encoder);
++	crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
++	crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ 	mode = &crtc_state->adjusted_mode;
+ 
+ 	pixel_clock_hz = mode->clock * 1000;
+@@ -1102,14 +1128,6 @@ static void vc4_dsi_encoder_mode_set(str
+ 		       ~DSI_PORT_BIT(PHY_AFEC0_RESET));
+ 
+ 	vc4_dsi_ulps(dsi, false);
+-}
+-
+-static void vc4_dsi_encoder_enable(struct drm_encoder *encoder,
+-				   struct drm_atomic_state *state)
+-{
+-	struct vc4_dsi_encoder *vc4_encoder = to_vc4_dsi_encoder(encoder);
+-	struct vc4_dsi *dsi = vc4_encoder->dsi;
+-	bool debug_dump_regs = false;
+ 
+ 	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
+ 		DSI_PORT_WRITE(DISP0_CTRL,
+@@ -1118,13 +1136,23 @@ static void vc4_dsi_encoder_enable(struc
+ 			       VC4_SET_FIELD(dsi->format, DSI_DISP0_PFORMAT) |
+ 			       VC4_SET_FIELD(DSI_DISP0_LP_STOP_PERFRAME,
+ 					     DSI_DISP0_LP_STOP_CTRL) |
+-			       DSI_DISP0_ST_END |
+-			       DSI_DISP0_ENABLE);
++			       DSI_DISP0_ST_END);
+ 	} else {
+ 		DSI_PORT_WRITE(DISP0_CTRL,
+-			       DSI_DISP0_COMMAND_MODE |
+-			       DSI_DISP0_ENABLE);
++			       DSI_DISP0_COMMAND_MODE);
+ 	}
++}
++
++static void vc4_dsi_bridge_enable(struct drm_bridge *bridge,
++				  struct drm_bridge_state *old_state)
++{
++	struct vc4_dsi *dsi = bridge_to_vc4_dsi(bridge);
++	bool debug_dump_regs = false;
++	u32 disp0_ctrl;
++
++	disp0_ctrl = DSI_PORT_READ(DISP0_CTRL);
++	disp0_ctrl |= DSI_DISP0_ENABLE;
++	DSI_PORT_WRITE(DISP0_CTRL, disp0_ctrl);
+ 
+ 	if (debug_dump_regs) {
+ 		struct drm_printer p = drm_info_printer(&dsi->pdev->dev);
+@@ -1133,6 +1161,16 @@ static void vc4_dsi_encoder_enable(struc
+ 	}
+ }
+ 
++static int vc4_dsi_bridge_attach(struct drm_bridge *bridge,
++				 enum drm_bridge_attach_flags flags)
++{
++	struct vc4_dsi *dsi = bridge_to_vc4_dsi(bridge);
++
++	/* Attach the panel or bridge to the dsi bridge */
++	return drm_bridge_attach(bridge->encoder, dsi->out_bridge,
++				 &dsi->bridge, flags);
++}
++
+ static ssize_t vc4_dsi_host_transfer(struct mipi_dsi_host *host,
+ 				     const struct mipi_dsi_msg *msg)
+ {
+@@ -1309,6 +1347,7 @@ static int vc4_dsi_host_attach(struct mi
+ 			       struct mipi_dsi_device *device)
+ {
+ 	struct vc4_dsi *dsi = host_to_dsi(host);
++	int ret;
+ 
+ 	dsi->lanes = device->lanes;
+ 	dsi->channel = device->channel;
+@@ -1343,7 +1382,15 @@ static int vc4_dsi_host_attach(struct mi
+ 		return 0;
+ 	}
+ 
+-	return component_add(&dsi->pdev->dev, &vc4_dsi_ops);
++	drm_bridge_add(&dsi->bridge);
++
++	ret = component_add(&dsi->pdev->dev, &vc4_dsi_ops);
++	if (ret) {
++		drm_bridge_remove(&dsi->bridge);
++		return ret;
++	}
++
++	return 0;
+ }
+ 
+ static int vc4_dsi_host_detach(struct mipi_dsi_host *host,
+@@ -1352,6 +1399,7 @@ static int vc4_dsi_host_detach(struct mi
+ 	struct vc4_dsi *dsi = host_to_dsi(host);
+ 
+ 	component_del(&dsi->pdev->dev, &vc4_dsi_ops);
++	drm_bridge_remove(&dsi->bridge);
+ 	return 0;
+ }
+ 
+@@ -1361,11 +1409,16 @@ static const struct mipi_dsi_host_ops vc
+ 	.transfer = vc4_dsi_host_transfer,
+ };
+ 
+-static const struct drm_encoder_helper_funcs vc4_dsi_encoder_helper_funcs = {
+-	.atomic_disable = vc4_dsi_encoder_disable,
+-	.atomic_enable = vc4_dsi_encoder_enable,
+-	.mode_fixup = vc4_dsi_encoder_mode_fixup,
+-	.atomic_mode_set = vc4_dsi_encoder_mode_set,
++static const struct drm_bridge_funcs vc4_dsi_bridge_funcs = {
++	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
++	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
++	.atomic_reset = drm_atomic_helper_bridge_reset,
++	.atomic_pre_enable = vc4_dsi_bridge_pre_enable,
++	.atomic_enable = vc4_dsi_bridge_enable,
++	.atomic_disable = vc4_dsi_bridge_disable,
++	.atomic_post_disable = vc4_dsi_bridge_post_disable,
++	.attach = vc4_dsi_bridge_attach,
++	.mode_fixup = vc4_dsi_bridge_mode_fixup,
+ };
+ 
+ static const struct vc4_dsi_variant bcm2711_dsi1_variant = {
+@@ -1691,9 +1744,8 @@ static int vc4_dsi_bind(struct device *d
+ 		goto err_free_dma;
+ 
+ 	drm_simple_encoder_init(drm, dsi->encoder, DRM_MODE_ENCODER_DSI);
+-	drm_encoder_helper_add(dsi->encoder, &vc4_dsi_encoder_helper_funcs);
+ 
+-	ret = drm_bridge_attach(dsi->encoder, dsi->out_bridge, NULL, 0);
++	ret = drm_bridge_attach(dsi->encoder, &dsi->bridge, NULL, 0);
+ 	if (ret) {
+ 		dev_err(dev, "bridge attach failed: %d\n", ret);
+ 		goto err_free_dma;
+@@ -1755,6 +1807,10 @@ static int vc4_dsi_dev_probe(struct plat
+ 		return -ENOMEM;
+ 	dev_set_drvdata(dev, dsi);
+ 
++	dsi->bridge.funcs = &vc4_dsi_bridge_funcs;
++	dsi->bridge.of_node = dev->of_node;
++	dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
++
+ 	dsi->pdev = pdev;
+ 	dsi->dsi_host.ops = &vc4_dsi_host_ops;
+ 	dsi->dsi_host.dev = dev;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0716-drm-vc4-Remove-entry-to-ULPS-from-vc4_dsi-post_disab.patch b/target/linux/bcm27xx/patches-5.15/950-0716-drm-vc4-Remove-entry-to-ULPS-from-vc4_dsi-post_disab.patch
new file mode 100644
index 0000000000..92377872f7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0716-drm-vc4-Remove-entry-to-ULPS-from-vc4_dsi-post_disab.patch
@@ -0,0 +1,32 @@
+From ddcc0cd30d39445fe4f00ee355f5ec4a7d3405aa Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 11 Feb 2022 14:15:26 +0000
+Subject: [PATCH] drm/vc4: Remove entry to ULPS from vc4_dsi
+ post_disable
+
+Post_disable was sending the D-PHY sequence to put any device
+into ULPS suspend mode, and then cutting power to the DSI block.
+The power-on reset state of the DSI block is for DSI to be in
+an operational state, not ULPS, so it then never sent the sequence
+for exiting ULPS. Any attached device that didn't have an external
+reset therefore remained in ULPS / standby, and didn't function.
+
+Use of ULPS isn't well specified in DRM, therefore remove entering
+it to avoid the above situation.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_dsi.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_dsi.c
++++ b/drivers/gpu/drm/vc4/vc4_dsi.c
+@@ -816,8 +816,6 @@ static void vc4_dsi_bridge_post_disable(
+ 	struct vc4_dsi *dsi = bridge_to_vc4_dsi(bridge);
+ 	struct device *dev = &dsi->pdev->dev;
+ 
+-	vc4_dsi_ulps(dsi, true);
+-
+ 	clk_disable_unprepare(dsi->pll_phy_clock);
+ 	clk_disable_unprepare(dsi->escape_clock);
+ 	clk_disable_unprepare(dsi->pixel_clock);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0717-usb-xhci-add-a-quirk-for-Superspeed-bulk-OUT-transfe.patch b/target/linux/bcm27xx/patches-5.15/950-0717-usb-xhci-add-a-quirk-for-Superspeed-bulk-OUT-transfe.patch
new file mode 100644
index 0000000000..b3bfaef7fb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0717-usb-xhci-add-a-quirk-for-Superspeed-bulk-OUT-transfe.patch
@@ -0,0 +1,96 @@
+From 12d1b2ed20e6e431ed22b359bc6e13f51f45c2f3 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Wed, 16 Feb 2022 14:31:02 +0000
+Subject: [PATCH] usb: xhci: add a quirk for Superspeed bulk OUT
+ transfers on VL805
+
+The VL805 has a bug in its internal FIFO space accounting that results
+in bulk OUT babble if a TRB in a large multi-element TD has a data
+buffer size that is larger than and not a multiple of wMaxPacketSize for
+the endpoint. If the downstream USB3.0 link is congested, or latency is
+increased through an intermediate hub, then the VL805 enters a suspected
+FIFO overflow condition and transmits repeated, garbled data to the
+endpoint.
+
+TDs with TRBs of exact multiples of wMaxPacketSize and smaller than
+wMaxPacketSize appear to be handled correctly, so split buffers at a
+1024-byte length boundary and put the remainder in a separate smaller
+TRB.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/xhci-pci.c  |  1 +
+ drivers/usb/host/xhci-ring.c | 21 +++++++++++++++++++--
+ drivers/usb/host/xhci.h      |  1 +
+ 3 files changed, 21 insertions(+), 2 deletions(-)
+
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -300,6 +300,7 @@ static void xhci_pci_quirks(struct devic
+ 		xhci->quirks |= XHCI_EP_CTX_BROKEN_DCS;
+ 		xhci->quirks |= XHCI_AVOID_DQ_ON_LINK;
+ 		xhci->quirks |= XHCI_VLI_TRB_CACHE_BUG;
++		xhci->quirks |= XHCI_VLI_SS_BULK_OUT_BUG;
+ 	}
+ 
+ 	if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -3608,14 +3608,15 @@ int xhci_queue_bulk_tx(struct xhci_hcd *
+ 	unsigned int num_trbs;
+ 	unsigned int start_cycle, num_sgs = 0;
+ 	unsigned int enqd_len, block_len, trb_buff_len, full_len;
+-	int sent_len, ret;
+-	u32 field, length_field, remainder;
++	int sent_len, ret, vli_quirk = 0;
++	u32 field, length_field, remainder, maxpacket;
+ 	u64 addr, send_addr;
+ 
+ 	ring = xhci_urb_to_transfer_ring(xhci, urb);
+ 	if (!ring)
+ 		return -EINVAL;
+ 
++	maxpacket = usb_endpoint_maxp(&urb->ep->desc);
+ 	full_len = urb->transfer_buffer_length;
+ 	/* If we have scatter/gather list, we use it. */
+ 	if (urb->num_sgs && !(urb->transfer_flags & URB_DMA_MAP_SINGLE)) {
+@@ -3652,6 +3653,17 @@ int xhci_queue_bulk_tx(struct xhci_hcd *
+ 	start_cycle = ring->cycle_state;
+ 	send_addr = addr;
+ 
++	if (xhci->quirks & XHCI_VLI_SS_BULK_OUT_BUG &&
++	    !usb_urb_dir_in(urb) && urb->dev->speed >= USB_SPEED_SUPER) {
++		/*
++		 * VL805 - superspeed bulk OUT traffic can cause
++		 * an internal fifo overflow if the TRB buffer is larger
++		 * than wMaxPacket and the length is not an integer
++		 * multiple of wMaxPacket.
++		 */
++		vli_quirk = 1;
++	}
++
+ 	/* Queue the TRBs, even if they are zero-length */
+ 	for (enqd_len = 0; first_trb || enqd_len < full_len;
+ 			enqd_len += trb_buff_len) {
+@@ -3664,6 +3676,11 @@ int xhci_queue_bulk_tx(struct xhci_hcd *
+ 		if (enqd_len + trb_buff_len > full_len)
+ 			trb_buff_len = full_len - enqd_len;
+ 
++		if (vli_quirk && trb_buff_len > maxpacket) {
++			/* SS bulk wMaxPacket is 1024B */
++			remainder = trb_buff_len & (maxpacket - 1);
++			trb_buff_len -= remainder;
++		}
+ 		/* Don't change the cycle bit of the first TRB until later */
+ 		if (first_trb) {
+ 			first_trb = false;
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1906,6 +1906,7 @@ struct xhci_hcd {
+ #define XHCI_EP_CTX_BROKEN_DCS	BIT_ULL(42)
+ #define XHCI_AVOID_DQ_ON_LINK	BIT_ULL(43)
+ #define XHCI_VLI_TRB_CACHE_BUG	BIT_ULL(44)
++#define XHCI_VLI_SS_BULK_OUT_BUG	BIT_ULL(45)
+ 
+ 	unsigned int		num_active_eps;
+ 	unsigned int		limit_active_eps;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0718-dtoverlays-Correct-link-frequency-for-ov7251.patch b/target/linux/bcm27xx/patches-5.15/950-0718-dtoverlays-Correct-link-frequency-for-ov7251.patch
new file mode 100644
index 0000000000..696115177e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0718-dtoverlays-Correct-link-frequency-for-ov7251.patch
@@ -0,0 +1,23 @@
+From a390c2098ae9f4ec36b3953b48980f3f75d01d24 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 15:16:56 +0000
+Subject: [PATCH] dtoverlays: Correct link frequency for ov7251
+
+It was incorrect, so the driver rejected it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/ov7251-overlay.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/ov7251-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+@@ -38,7 +38,7 @@
+ 						data-lanes = <1>;
+ 						clock-noncontinuous;
+ 						link-frequencies =
+-							/bits/ 64 <456000000>;
++							/bits/ 64 <240000000>;
+ 					};
+ 				};
+ 			};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0719-media-i2c-Add-acpi-support-to-ov7251.patch b/target/linux/bcm27xx/patches-5.15/950-0719-media-i2c-Add-acpi-support-to-ov7251.patch
new file mode 100644
index 0000000000..5ec3d1b7a5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0719-media-i2c-Add-acpi-support-to-ov7251.patch
@@ -0,0 +1,39 @@
+From 72ffad08ed8a635ada5a15be818f151f20d92e9b Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Tue, 15 Feb 2022 23:07:30 +0000
+Subject: [PATCH] media: i2c: Add acpi support to ov7251
+
+Add support for enumeration through ACPI to the ov7251 driver
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/i2c/ov7251.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -14,6 +14,7 @@
+ #include <linux/i2c.h>
+ #include <linux/init.h>
+ #include <linux/module.h>
++#include <linux/mod_devicetable.h>
+ #include <linux/regulator/consumer.h>
+ #include <linux/slab.h>
+ #include <linux/types.h>
+@@ -1501,9 +1502,16 @@ static const struct of_device_id ov7251_
+ };
+ MODULE_DEVICE_TABLE(of, ov7251_of_match);
+ 
++static const struct acpi_device_id ov7251_acpi_match[] = {
++	{ "INT347E" },
++	{ }
++};
++MODULE_DEVICE_TABLE(acpi, ov7251_acpi_match);
++
+ static struct i2c_driver ov7251_i2c_driver = {
+ 	.driver = {
+ 		.of_match_table = ov7251_of_match,
++		.acpi_match_table = ov7251_acpi_match,
+ 		.name  = "ov7251",
+ 	},
+ 	.probe_new  = ov7251_probe,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0720-media-i2c-Provide-ov7251_check_hwcfg.patch b/target/linux/bcm27xx/patches-5.15/950-0720-media-i2c-Provide-ov7251_check_hwcfg.patch
new file mode 100644
index 0000000000..b4b99fc4a4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0720-media-i2c-Provide-ov7251_check_hwcfg.patch
@@ -0,0 +1,121 @@
+From 3b21da2334113027d91829e1fabe332cf21522a3 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Tue, 15 Feb 2022 23:07:31 +0000
+Subject: [PATCH] media: i2c: Provide ov7251_check_hwcfg()
+
+Move the endpoint checking from .probe() to a dedicated function,
+and additionally check that the firmware provided link frequencies
+are a match for those supported by the driver. Finally, return
+-EPROBE_DEFER if the endpoint is not available, as it could be built
+by the ipu3-cio2 driver if that probes later.
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/i2c/ov7251.c | 84 ++++++++++++++++++++++++++++++--------
+ 1 file changed, 66 insertions(+), 18 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -1255,11 +1255,74 @@ static const struct v4l2_subdev_ops ov72
+ 	.pad = &ov7251_subdev_pad_ops,
+ };
+ 
++static int ov7251_check_hwcfg(struct ov7251 *ov7251)
++{
++	struct fwnode_handle *fwnode = dev_fwnode(ov7251->dev);
++	struct v4l2_fwnode_endpoint bus_cfg = {
++		.bus_type = V4L2_MBUS_CSI2_DPHY,
++	};
++	struct fwnode_handle *endpoint;
++	bool freq_found;
++	int i, j;
++	int ret;
++
++	endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
++	if (!endpoint)
++		return -EPROBE_DEFER; /* could be provided by cio2-bridge */
++
++	ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg);
++	fwnode_handle_put(endpoint);
++	if (ret)
++		return dev_err_probe(ov7251->dev, ret,
++				     "parsing endpoint node failed\n");
++
++	if (bus_cfg.bus_type != V4L2_MBUS_CSI2_DPHY) {
++		ret = -EINVAL;
++		dev_err(ov7251->dev, "invalid bus type (%u), must be (%u)\n",
++			bus_cfg.bus_type, V4L2_MBUS_CSI2_DPHY);
++		goto out_free_bus_cfg;
++	}
++
++	if (bus_cfg.bus.mipi_csi2.num_data_lanes != 1) {
++		dev_err(ov7251->dev, "only a 1-lane CSI2 config is supported");
++		ret = -EINVAL;
++		goto out_free_bus_cfg;
++	}
++
++	if (!bus_cfg.nr_of_link_frequencies) {
++		dev_err(ov7251->dev, "no link frequencies defined\n");
++		ret = -EINVAL;
++		goto out_free_bus_cfg;
++	}
++
++	freq_found = false;
++	for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
++		if (freq_found)
++			break;
++
++		for (j = 0; j < ARRAY_SIZE(link_freq); j++)
++			if (bus_cfg.link_frequencies[i] == link_freq[j]) {
++				freq_found = true;
++				break;
++			}
++	}
++
++	if (i == bus_cfg.nr_of_link_frequencies) {
++		dev_err(ov7251->dev, "no supported link freq found\n");
++		ret = -EINVAL;
++		goto out_free_bus_cfg;
++	}
++
++out_free_bus_cfg:
++	v4l2_fwnode_endpoint_free(&bus_cfg);
++
++	return ret;
++}
++
+ static int ov7251_probe(struct i2c_client *client)
+ {
+ 	struct v4l2_fwnode_device_properties props;
+ 	struct device *dev = &client->dev;
+-	struct fwnode_handle *endpoint;
+ 	struct ov7251 *ov7251;
+ 	u8 chip_id_high, chip_id_low, chip_rev;
+ 	int ret;
+@@ -1271,24 +1334,9 @@ static int ov7251_probe(struct i2c_clien
+ 	ov7251->i2c_client = client;
+ 	ov7251->dev = dev;
+ 
+-	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+-	if (!endpoint) {
+-		dev_err(dev, "endpoint node not found\n");
+-		return -EINVAL;
+-	}
+-
+-	ret = v4l2_fwnode_endpoint_parse(endpoint, &ov7251->ep);
+-	fwnode_handle_put(endpoint);
+-	if (ret < 0) {
+-		dev_err(dev, "parsing endpoint node failed\n");
++	ret = ov7251_check_hwcfg(ov7251);
++	if (ret)
+ 		return ret;
+-	}
+-
+-	if (ov7251->ep.bus_type != V4L2_MBUS_CSI2_DPHY) {
+-		dev_err(dev, "invalid bus type (%u), must be CSI2 (%u)\n",
+-			ov7251->ep.bus_type, V4L2_MBUS_CSI2_DPHY);
+-		return -EINVAL;
+-	}
+ 
+ 	/* get system clock (xclk) */
+ 	ov7251->xclk = devm_clk_get(dev, "xclk");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0721-media-i2c-Add-ov7251_pll_configure.patch b/target/linux/bcm27xx/patches-5.15/950-0721-media-i2c-Add-ov7251_pll_configure.patch
new file mode 100644
index 0000000000..0408984273
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0721-media-i2c-Add-ov7251_pll_configure.patch
@@ -0,0 +1,266 @@
+From c16cebe5ebfb309074ff7cc9ddeaf37724d31512 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Tue, 15 Feb 2022 23:07:32 +0000
+Subject: [PATCH] media: i2c: Add ov7251_pll_configure()
+
+Rather than having the pll settings hidden inside mode blobs, define
+them in structs and use a dedicated function to set them. This makes
+it simpler to extend the driver to support other external clock
+frequencies.
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/i2c/ov7251.c | 165 ++++++++++++++++++++++++++++++-------
+ 1 file changed, 135 insertions(+), 30 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -42,6 +42,16 @@
+ #define OV7251_TIMING_FORMAT2_MIRROR	BIT(2)
+ #define OV7251_PRE_ISP_00		0x5e00
+ #define OV7251_PRE_ISP_00_TEST_PATTERN	BIT(7)
++#define OV7251_PLL1_PRE_DIV_REG		0x30b4
++#define OV7251_PLL1_MULT_REG		0x30b3
++#define OV7251_PLL1_DIVIDER_REG		0x30b1
++#define OV7251_PLL1_PIX_DIV_REG		0x30b0
++#define OV7251_PLL1_MIPI_DIV_REG	0x30b5
++#define OV7251_PLL2_PRE_DIV_REG		0x3098
++#define OV7251_PLL2_MULT_REG		0x3099
++#define OV7251_PLL2_DIVIDER_REG		0x309d
++#define OV7251_PLL2_SYS_DIV_REG		0x309a
++#define OV7251_PLL2_ADC_DIV_REG		0x309b
+ 
+ struct reg_value {
+ 	u16 reg;
+@@ -60,6 +70,27 @@ struct ov7251_mode_info {
+ 	struct v4l2_fract timeperframe;
+ };
+ 
++struct ov7251_pll1_config {
++	unsigned int pre_div;
++	unsigned int mult;
++	unsigned int div;
++	unsigned int pix_div;
++	unsigned int mipi_div;
++};
++
++struct ov7251_pll2_config {
++	unsigned int pre_div;
++	unsigned int mult;
++	unsigned int div;
++	unsigned int sys_div;
++	unsigned int adc_div;
++};
++
++struct ov7251_pll_configs {
++	const struct ov7251_pll1_config *pll1;
++	const struct ov7251_pll2_config *pll2;
++};
++
+ struct ov7251 {
+ 	struct i2c_client *i2c_client;
+ 	struct device *dev;
+@@ -71,6 +102,8 @@ struct ov7251 {
+ 	struct clk *xclk;
+ 	u32 xclk_freq;
+ 
++	const struct ov7251_pll_configs *pll_configs;
++
+ 	struct regulator *io_regulator;
+ 	struct regulator *core_regulator;
+ 	struct regulator *analog_regulator;
+@@ -100,6 +133,36 @@ static inline struct ov7251 *to_ov7251(s
+ 	return container_of(sd, struct ov7251, sd);
+ }
+ 
++enum xclk_rate {
++	OV7251_24_MHZ,
++	OV7251_NUM_SUPPORTED_RATES
++};
++
++static const struct ov7251_pll1_config ov7251_pll1_config_24_mhz = {
++	.pre_div = 0x03,
++	.mult = 0x64,
++	.div = 0x01,
++	.pix_div = 0x0a,
++	.mipi_div = 0x05
++};
++
++static const struct ov7251_pll2_config ov7251_pll2_config_24_mhz = {
++	.pre_div = 0x04,
++	.mult = 0x28,
++	.div = 0x00,
++	.sys_div = 0x05,
++	.adc_div = 0x04
++};
++
++static const struct ov7251_pll_configs ov7251_pll_configs_24_mhz = {
++	.pll1 = &ov7251_pll1_config_24_mhz,
++	.pll2 = &ov7251_pll2_config_24_mhz
++};
++
++static const struct ov7251_pll_configs *ov7251_pll_configs[] = {
++	[OV7251_24_MHZ] = &ov7251_pll_configs_24_mhz
++};
++
+ static const struct reg_value ov7251_global_init_setting[] = {
+ 	{ 0x0103, 0x01 },
+ 	{ 0x303b, 0x02 },
+@@ -118,16 +181,6 @@ static const struct reg_value ov7251_set
+ 	{ 0x301c, 0xf0 },
+ 	{ 0x3023, 0x05 },
+ 	{ 0x3037, 0xf0 },
+-	{ 0x3098, 0x04 }, /* pll2 pre divider */
+-	{ 0x3099, 0x28 }, /* pll2 multiplier */
+-	{ 0x309a, 0x05 }, /* pll2 sys divider */
+-	{ 0x309b, 0x04 }, /* pll2 adc divider */
+-	{ 0x309d, 0x00 }, /* pll2 divider */
+-	{ 0x30b0, 0x0a }, /* pll1 pix divider */
+-	{ 0x30b1, 0x01 }, /* pll1 divider */
+-	{ 0x30b3, 0x64 }, /* pll1 multiplier */
+-	{ 0x30b4, 0x03 }, /* pll1 pre divider */
+-	{ 0x30b5, 0x05 }, /* pll1 mipi divider */
+ 	{ 0x3106, 0xda },
+ 	{ 0x3503, 0x07 },
+ 	{ 0x3509, 0x10 },
+@@ -256,16 +309,6 @@ static const struct reg_value ov7251_set
+ 	{ 0x301c, 0x00 },
+ 	{ 0x3023, 0x05 },
+ 	{ 0x3037, 0xf0 },
+-	{ 0x3098, 0x04 }, /* pll2 pre divider */
+-	{ 0x3099, 0x28 }, /* pll2 multiplier */
+-	{ 0x309a, 0x05 }, /* pll2 sys divider */
+-	{ 0x309b, 0x04 }, /* pll2 adc divider */
+-	{ 0x309d, 0x00 }, /* pll2 divider */
+-	{ 0x30b0, 0x0a }, /* pll1 pix divider */
+-	{ 0x30b1, 0x01 }, /* pll1 divider */
+-	{ 0x30b3, 0x64 }, /* pll1 multiplier */
+-	{ 0x30b4, 0x03 }, /* pll1 pre divider */
+-	{ 0x30b5, 0x05 }, /* pll1 mipi divider */
+ 	{ 0x3106, 0xda },
+ 	{ 0x3503, 0x07 },
+ 	{ 0x3509, 0x10 },
+@@ -394,16 +437,6 @@ static const struct reg_value ov7251_set
+ 	{ 0x301c, 0x00 },
+ 	{ 0x3023, 0x05 },
+ 	{ 0x3037, 0xf0 },
+-	{ 0x3098, 0x04 }, /* pll2 pre divider */
+-	{ 0x3099, 0x28 }, /* pll2 multiplier */
+-	{ 0x309a, 0x05 }, /* pll2 sys divider */
+-	{ 0x309b, 0x04 }, /* pll2 adc divider */
+-	{ 0x309d, 0x00 }, /* pll2 divider */
+-	{ 0x30b0, 0x0a }, /* pll1 pix divider */
+-	{ 0x30b1, 0x01 }, /* pll1 divider */
+-	{ 0x30b3, 0x64 }, /* pll1 multiplier */
+-	{ 0x30b4, 0x03 }, /* pll1 pre divider */
+-	{ 0x30b5, 0x05 }, /* pll1 mipi divider */
+ 	{ 0x3106, 0xda },
+ 	{ 0x3503, 0x07 },
+ 	{ 0x3509, 0x10 },
+@@ -519,6 +552,10 @@ static const struct reg_value ov7251_set
+ 	{ 0x5001, 0x80 },
+ };
+ 
++static const unsigned long supported_xclk_rates[] = {
++	[OV7251_24_MHZ] = 24000000,
++};
++
+ static const s64 link_freq[] = {
+ 	240000000,
+ };
+@@ -692,6 +729,63 @@ static int ov7251_read_reg(struct ov7251
+ 	return 0;
+ }
+ 
++static int ov7251_pll_configure(struct ov7251 *ov7251)
++{
++	const struct ov7251_pll_configs *configs;
++	int ret;
++
++	configs = ov7251->pll_configs;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL1_PRE_DIV_REG,
++			       configs->pll1->pre_div);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL1_MULT_REG,
++			       configs->pll1->mult);
++	if (ret < 0)
++		return ret;
++	ret = ov7251_write_reg(ov7251, OV7251_PLL1_DIVIDER_REG,
++			       configs->pll1->div);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL1_PIX_DIV_REG,
++			       configs->pll1->pix_div);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL1_MIPI_DIV_REG,
++			       configs->pll1->mipi_div);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL2_PRE_DIV_REG,
++			       configs->pll2->pre_div);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL2_MULT_REG,
++			       configs->pll2->mult);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL2_DIVIDER_REG,
++			       configs->pll2->div);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL2_SYS_DIV_REG,
++			       configs->pll2->sys_div);
++	if (ret < 0)
++		return ret;
++
++	ret = ov7251_write_reg(ov7251, OV7251_PLL2_ADC_DIV_REG,
++			       configs->pll2->adc_div);
++
++	return ret;
++}
++
+ static int ov7251_set_exposure(struct ov7251 *ov7251, s32 exposure)
+ {
+ 	u16 reg;
+@@ -1143,6 +1237,11 @@ static int ov7251_s_stream(struct v4l2_s
+ 	mutex_lock(&ov7251->lock);
+ 
+ 	if (enable) {
++		ret = ov7251_pll_configure(ov7251);
++		if (ret)
++			return dev_err_probe(ov7251->dev, ret,
++					     "error configuring PLLs\n");
++
+ 		ret = ov7251_set_register_array(ov7251,
+ 					ov7251->current_mode->data,
+ 					ov7251->current_mode->data_size);
+@@ -1326,6 +1425,7 @@ static int ov7251_probe(struct i2c_clien
+ 	struct ov7251 *ov7251;
+ 	u8 chip_id_high, chip_id_low, chip_rev;
+ 	int ret;
++	int i;
+ 
+ 	ov7251 = devm_kzalloc(dev, sizeof(struct ov7251), GFP_KERNEL);
+ 	if (!ov7251)
+@@ -1364,6 +1464,11 @@ static int ov7251_probe(struct i2c_clien
+ 		dev_err(dev, "could not set xclk frequency\n");
+ 		return ret;
+ 	}
++	for (i = 0; i < ARRAY_SIZE(supported_xclk_rates); i++)
++		if (ov7251->xclk_freq == supported_xclk_rates[i])
++			break;
++
++	ov7251->pll_configs = ov7251_pll_configs[i];
+ 
+ 	ov7251->io_regulator = devm_regulator_get(dev, "vdddo");
+ 	if (IS_ERR(ov7251->io_regulator)) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0722-media-i2c-Add-support-for-19.2MHz-clock-to-ov7251.patch b/target/linux/bcm27xx/patches-5.15/950-0722-media-i2c-Add-support-for-19.2MHz-clock-to-ov7251.patch
new file mode 100644
index 0000000000..6052cfa479
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0722-media-i2c-Add-support-for-19.2MHz-clock-to-ov7251.patch
@@ -0,0 +1,144 @@
+From 16af9ae925fdb05960f644b6cc84098af8aa3956 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Tue, 15 Feb 2022 23:07:33 +0000
+Subject: [PATCH] media: i2c: Add support for 19.2MHz clock to ov7251
+
+The OV7251 sensor is used as the IR camera sensor on the Microsoft
+Surface line of tablets; this provides a 19.2MHz external clock. Add
+the ability to support that rate to the driver by defining a new set
+of PLL configs. Extend the clock handling in .probe() to check for
+either supported frequency.
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/i2c/ov7251.c | 61 ++++++++++++++++++++++++++++----------
+ 1 file changed, 45 insertions(+), 16 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -134,10 +134,19 @@ static inline struct ov7251 *to_ov7251(s
+ }
+ 
+ enum xclk_rate {
++	OV7251_19_2_MHZ,
+ 	OV7251_24_MHZ,
+ 	OV7251_NUM_SUPPORTED_RATES
+ };
+ 
++static const struct ov7251_pll1_config ov7251_pll1_config_19_2_mhz = {
++	.pre_div = 0x03,
++	.mult = 0x4b,
++	.div = 0x01,
++	.pix_div = 0x0a,
++	.mipi_div = 0x05
++};
++
+ static const struct ov7251_pll1_config ov7251_pll1_config_24_mhz = {
+ 	.pre_div = 0x03,
+ 	.mult = 0x64,
+@@ -146,6 +155,14 @@ static const struct ov7251_pll1_config o
+ 	.mipi_div = 0x05
+ };
+ 
++static const struct ov7251_pll2_config ov7251_pll2_config_19_2_mhz = {
++	.pre_div = 0x04,
++	.mult = 0x32,
++	.div = 0x00,
++	.sys_div = 0x05,
++	.adc_div = 0x04
++};
++
+ static const struct ov7251_pll2_config ov7251_pll2_config_24_mhz = {
+ 	.pre_div = 0x04,
+ 	.mult = 0x28,
+@@ -154,12 +171,18 @@ static const struct ov7251_pll2_config o
+ 	.adc_div = 0x04
+ };
+ 
++static const struct ov7251_pll_configs ov7251_pll_configs_19_2_mhz = {
++	.pll1 = &ov7251_pll1_config_19_2_mhz,
++	.pll2 = &ov7251_pll2_config_19_2_mhz
++};
++
+ static const struct ov7251_pll_configs ov7251_pll_configs_24_mhz = {
+ 	.pll1 = &ov7251_pll1_config_24_mhz,
+ 	.pll2 = &ov7251_pll2_config_24_mhz
+ };
+ 
+ static const struct ov7251_pll_configs *ov7251_pll_configs[] = {
++	[OV7251_19_2_MHZ] = &ov7251_pll_configs_19_2_mhz,
+ 	[OV7251_24_MHZ] = &ov7251_pll_configs_24_mhz
+ };
+ 
+@@ -553,6 +576,7 @@ static const struct reg_value ov7251_set
+ };
+ 
+ static const unsigned long supported_xclk_rates[] = {
++	[OV7251_19_2_MHZ] = 19200000,
+ 	[OV7251_24_MHZ] = 24000000,
+ };
+ 
+@@ -1424,6 +1448,7 @@ static int ov7251_probe(struct i2c_clien
+ 	struct device *dev = &client->dev;
+ 	struct ov7251 *ov7251;
+ 	u8 chip_id_high, chip_id_low, chip_rev;
++	unsigned int rate = 0;
+ 	int ret;
+ 	int i;
+ 
+@@ -1439,35 +1464,39 @@ static int ov7251_probe(struct i2c_clien
+ 		return ret;
+ 
+ 	/* get system clock (xclk) */
+-	ov7251->xclk = devm_clk_get(dev, "xclk");
++	ov7251->xclk = devm_clk_get(dev, NULL);
+ 	if (IS_ERR(ov7251->xclk)) {
+ 		dev_err(dev, "could not get xclk");
+ 		return PTR_ERR(ov7251->xclk);
+ 	}
+ 
++	/*
++	 * We could have either a 24MHz or 19.2MHz clock rate from either dt or
++	 * ACPI. We also need to support the IPU3 case which will have both an
++	 * external clock AND a clock-frequency property.
++	 */
+ 	ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
+-				       &ov7251->xclk_freq);
+-	if (ret) {
+-		dev_err(dev, "could not get xclk frequency\n");
+-		return ret;
++				       &rate);
++	if (!ret && ov7251->xclk) {
++		ret = clk_set_rate(ov7251->xclk, rate);
++		if (ret)
++			return dev_err_probe(dev, ret,
++					     "failed to set clock rate\n");
++	} else if (ret && !ov7251->xclk) {
++		return dev_err_probe(dev, ret, "invalid clock config\n");
+ 	}
+ 
+-	/* external clock must be 24MHz, allow 1% tolerance */
+-	if (ov7251->xclk_freq < 23760000 || ov7251->xclk_freq > 24240000) {
+-		dev_err(dev, "external clock frequency %u is not supported\n",
+-			ov7251->xclk_freq);
+-		return -EINVAL;
+-	}
++	ov7251->xclk_freq = rate ? rate : clk_get_rate(ov7251->xclk);
+ 
+-	ret = clk_set_rate(ov7251->xclk, ov7251->xclk_freq);
+-	if (ret) {
+-		dev_err(dev, "could not set xclk frequency\n");
+-		return ret;
+-	}
+ 	for (i = 0; i < ARRAY_SIZE(supported_xclk_rates); i++)
+ 		if (ov7251->xclk_freq == supported_xclk_rates[i])
+ 			break;
+ 
++	if (i == ARRAY_SIZE(supported_xclk_rates))
++		return dev_err_probe(dev, -EINVAL,
++				     "clock rate %u Hz is unsupported\n",
++				     ov7251->xclk_freq);
++
+ 	ov7251->pll_configs = ov7251_pll_configs[i];
+ 
+ 	ov7251->io_regulator = devm_regulator_get(dev, "vdddo");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0723-media-i2c-Add-ov7251_detect_chip.patch b/target/linux/bcm27xx/patches-5.15/950-0723-media-i2c-Add-ov7251_detect_chip.patch
new file mode 100644
index 0000000000..526dd668bb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0723-media-i2c-Add-ov7251_detect_chip.patch
@@ -0,0 +1,98 @@
+From d67eece3a8ba9e8961e6050129f6f76d31924d62 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Tue, 15 Feb 2022 23:07:34 +0000
+Subject: [PATCH] media: i2c: Add ov7251_detect_chip()
+
+.probe() is quite busy for this driver; make it cleaner by moving the
+chip verification to a dedicated function.
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/i2c/ov7251.c | 62 +++++++++++++++++++++-----------------
+ 1 file changed, 35 insertions(+), 27 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -1442,12 +1442,44 @@ out_free_bus_cfg:
+ 	return ret;
+ }
+ 
++static int ov7251_detect_chip(struct ov7251 *ov7251)
++{
++	u8 chip_id_high, chip_id_low, chip_rev;
++	int ret;
++
++	ret = ov7251_read_reg(ov7251, OV7251_CHIP_ID_HIGH, &chip_id_high);
++	if (ret < 0 || chip_id_high != OV7251_CHIP_ID_HIGH_BYTE)
++		return dev_err_probe(ov7251->dev, -ENODEV,
++				     "could not read ID high\n");
++
++	ret = ov7251_read_reg(ov7251, OV7251_CHIP_ID_LOW, &chip_id_low);
++	if (ret < 0 || chip_id_low != OV7251_CHIP_ID_LOW_BYTE)
++		return dev_err_probe(ov7251->dev, -ENODEV,
++				     "could not read ID low\n");
++
++	ret = ov7251_read_reg(ov7251, OV7251_SC_GP_IO_IN1, &chip_rev);
++	if (ret < 0)
++		return dev_err_probe(ov7251->dev, -ENODEV,
++				     "could not read revision\n");
++	chip_rev >>= 4;
++
++	dev_info(ov7251->dev,
++		 "OV7251 revision %x (%s) detected at address 0x%02x\n",
++		 chip_rev,
++		 chip_rev == 0x4 ? "1A / 1B" :
++		 chip_rev == 0x5 ? "1C / 1D" :
++		 chip_rev == 0x6 ? "1E" :
++		 chip_rev == 0x7 ? "1F" : "unknown",
++		 ov7251->i2c_client->addr);
++
++	return 0;
++}
++
+ static int ov7251_probe(struct i2c_client *client)
+ {
+ 	struct v4l2_fwnode_device_properties props;
+ 	struct device *dev = &client->dev;
+ 	struct ov7251 *ov7251;
+-	u8 chip_id_high, chip_id_low, chip_rev;
+ 	unsigned int rate = 0;
+ 	int ret;
+ 	int i;
+@@ -1589,34 +1621,10 @@ static int ov7251_probe(struct i2c_clien
+ 		goto free_entity;
+ 	}
+ 
+-	ret = ov7251_read_reg(ov7251, OV7251_CHIP_ID_HIGH, &chip_id_high);
+-	if (ret < 0 || chip_id_high != OV7251_CHIP_ID_HIGH_BYTE) {
+-		dev_err(dev, "could not read ID high\n");
+-		ret = -ENODEV;
+-		goto power_down;
+-	}
+-	ret = ov7251_read_reg(ov7251, OV7251_CHIP_ID_LOW, &chip_id_low);
+-	if (ret < 0 || chip_id_low != OV7251_CHIP_ID_LOW_BYTE) {
+-		dev_err(dev, "could not read ID low\n");
+-		ret = -ENODEV;
+-		goto power_down;
+-	}
+-
+-	ret = ov7251_read_reg(ov7251, OV7251_SC_GP_IO_IN1, &chip_rev);
+-	if (ret < 0) {
+-		dev_err(dev, "could not read revision\n");
+-		ret = -ENODEV;
++	ret = ov7251_detect_chip(ov7251);
++	if (ret)
+ 		goto power_down;
+-	}
+-	chip_rev >>= 4;
+ 
+-	dev_info(dev, "OV7251 revision %x (%s) detected at address 0x%02x\n",
+-		 chip_rev,
+-		 chip_rev == 0x4 ? "1A / 1B" :
+-		 chip_rev == 0x5 ? "1C / 1D" :
+-		 chip_rev == 0x6 ? "1E" :
+-		 chip_rev == 0x7 ? "1F" : "unknown",
+-		 client->addr);
+ 
+ 	ret = ov7251_read_reg(ov7251, OV7251_PRE_ISP_00,
+ 			      &ov7251->pre_isp_00);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0724-media-i2c-Add-pm_runtime-support-to-ov7251.patch b/target/linux/bcm27xx/patches-5.15/950-0724-media-i2c-Add-pm_runtime-support-to-ov7251.patch
new file mode 100644
index 0000000000..3f1c9b50f1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0724-media-i2c-Add-pm_runtime-support-to-ov7251.patch
@@ -0,0 +1,208 @@
+From 1768a6f48030e8b670ca3aad08e078bd4bd3ef64 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Tue, 15 Feb 2022 23:07:35 +0000
+Subject: [PATCH] media: i2c: Add pm_runtime support to ov7251
+
+Add pm_runtime support to the ov7251 driver.
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/i2c/ov7251.c | 78 ++++++++++++++++++++++++++++++--------
+ 1 file changed, 63 insertions(+), 15 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -15,6 +15,7 @@
+ #include <linux/init.h>
+ #include <linux/module.h>
+ #include <linux/mod_devicetable.h>
++#include <linux/pm_runtime.h>
+ #include <linux/regulator/consumer.h>
+ #include <linux/slab.h>
+ #include <linux/types.h>
+@@ -884,6 +885,24 @@ static void ov7251_set_power_off(struct
+ 	ov7251_regulators_disable(ov7251);
+ }
+ 
++static int __maybe_unused ov7251_sensor_suspend(struct device *dev)
++{
++	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct ov7251 *ov7251 = to_ov7251(sd);
++
++	ov7251_set_power_off(ov7251);
++
++	return 0;
++}
++
++static int __maybe_unused ov7251_sensor_resume(struct device *dev)
++{
++	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct ov7251 *ov7251 = to_ov7251(sd);
++
++	return ov7251_set_power_on(ov7251);
++}
++
+ static int ov7251_s_power(struct v4l2_subdev *sd, int on)
+ {
+ 	struct ov7251 *ov7251 = to_ov7251(sd);
+@@ -985,7 +1004,7 @@ static int ov7251_s_ctrl(struct v4l2_ctr
+ 
+ 	/* v4l2_ctrl_lock() locks our mutex */
+ 
+-	if (!ov7251->power_on)
++	if (!pm_runtime_get_if_in_use(ov7251->dev))
+ 		return 0;
+ 
+ 	switch (ctrl->id) {
+@@ -1009,6 +1028,8 @@ static int ov7251_s_ctrl(struct v4l2_ctr
+ 		break;
+ 	}
+ 
++	pm_runtime_put(ov7251->dev);
++
+ 	return ret;
+ }
+ 
+@@ -1261,10 +1282,15 @@ static int ov7251_s_stream(struct v4l2_s
+ 	mutex_lock(&ov7251->lock);
+ 
+ 	if (enable) {
++		ret = pm_runtime_get_sync(ov7251->dev);
++		if (ret < 0)
++			return ret;
++
+ 		ret = ov7251_pll_configure(ov7251);
+-		if (ret)
+-			return dev_err_probe(ov7251->dev, ret,
+-					     "error configuring PLLs\n");
++		if (ret) {
++			dev_err(ov7251->dev, "error configuring PLLs\n");
++			goto err_power_down;
++		}
+ 
+ 		ret = ov7251_set_register_array(ov7251,
+ 					ov7251->current_mode->data,
+@@ -1273,23 +1299,29 @@ static int ov7251_s_stream(struct v4l2_s
+ 			dev_err(ov7251->dev, "could not set mode %dx%d\n",
+ 				ov7251->current_mode->width,
+ 				ov7251->current_mode->height);
+-			goto exit;
++			goto err_power_down;
+ 		}
+ 		ret = __v4l2_ctrl_handler_setup(&ov7251->ctrls);
+ 		if (ret < 0) {
+ 			dev_err(ov7251->dev, "could not sync v4l2 controls\n");
+-			goto exit;
++			goto err_power_down;
+ 		}
+ 		ret = ov7251_write_reg(ov7251, OV7251_SC_MODE_SELECT,
+ 				       OV7251_SC_MODE_SELECT_STREAMING);
++		if (ret)
++			goto err_power_down;
+ 	} else {
+ 		ret = ov7251_write_reg(ov7251, OV7251_SC_MODE_SELECT,
+ 				       OV7251_SC_MODE_SELECT_SW_STANDBY);
++		pm_runtime_put(ov7251->dev);
+ 	}
+ 
+-exit:
+ 	mutex_unlock(&ov7251->lock);
++	return ret;
+ 
++err_power_down:
++	pm_runtime_put_noidle(ov7251->dev);
++	mutex_unlock(&ov7251->lock);
+ 	return ret;
+ }
+ 
+@@ -1615,23 +1647,24 @@ static int ov7251_probe(struct i2c_clien
+ 		goto free_ctrl;
+ 	}
+ 
+-	ret = ov7251_s_power(&ov7251->sd, true);
+-	if (ret < 0) {
+-		dev_err(dev, "could not power up OV7251\n");
++	ret = ov7251_set_power_on(ov7251);
++	if (ret)
+ 		goto free_entity;
+-	}
+ 
+ 	ret = ov7251_detect_chip(ov7251);
+ 	if (ret)
+ 		goto power_down;
+ 
++	pm_runtime_set_active(&client->dev);
++	pm_runtime_get_noresume(&client->dev);
++	pm_runtime_enable(&client->dev);
+ 
+ 	ret = ov7251_read_reg(ov7251, OV7251_PRE_ISP_00,
+ 			      &ov7251->pre_isp_00);
+ 	if (ret < 0) {
+ 		dev_err(dev, "could not read test pattern value\n");
+ 		ret = -ENODEV;
+-		goto power_down;
++		goto err_pm_runtime;
+ 	}
+ 
+ 	ret = ov7251_read_reg(ov7251, OV7251_TIMING_FORMAT1,
+@@ -1639,7 +1672,7 @@ static int ov7251_probe(struct i2c_clien
+ 	if (ret < 0) {
+ 		dev_err(dev, "could not read vflip value\n");
+ 		ret = -ENODEV;
+-		goto power_down;
++		goto err_pm_runtime;
+ 	}
+ 
+ 	ret = ov7251_read_reg(ov7251, OV7251_TIMING_FORMAT2,
+@@ -1647,10 +1680,12 @@ static int ov7251_probe(struct i2c_clien
+ 	if (ret < 0) {
+ 		dev_err(dev, "could not read hflip value\n");
+ 		ret = -ENODEV;
+-		goto power_down;
++		goto err_pm_runtime;
+ 	}
+ 
+-	ov7251_s_power(&ov7251->sd, false);
++	pm_runtime_set_autosuspend_delay(&client->dev, 1000);
++	pm_runtime_use_autosuspend(&client->dev);
++	pm_runtime_put_autosuspend(&client->dev);
+ 
+ 	ret = v4l2_async_register_subdev(&ov7251->sd);
+ 	if (ret < 0) {
+@@ -1662,6 +1697,9 @@ static int ov7251_probe(struct i2c_clien
+ 
+ 	return 0;
+ 
++err_pm_runtime:
++	pm_runtime_disable(ov7251->dev);
++	pm_runtime_put_noidle(ov7251->dev);
+ power_down:
+ 	ov7251_s_power(&ov7251->sd, false);
+ free_entity:
+@@ -1683,9 +1721,18 @@ static int ov7251_remove(struct i2c_clie
+ 	v4l2_ctrl_handler_free(&ov7251->ctrls);
+ 	mutex_destroy(&ov7251->lock);
+ 
++	pm_runtime_disable(ov7251->dev);
++	if (!pm_runtime_status_suspended(ov7251->dev))
++		ov7251_set_power_off(ov7251);
++	pm_runtime_set_suspended(ov7251->dev);
++
+ 	return 0;
+ }
+ 
++static const struct dev_pm_ops ov7251_pm_ops = {
++	SET_RUNTIME_PM_OPS(ov7251_sensor_suspend, ov7251_sensor_resume, NULL)
++};
++
+ static const struct of_device_id ov7251_of_match[] = {
+ 	{ .compatible = "ovti,ov7251" },
+ 	{ /* sentinel */ }
+@@ -1703,6 +1750,7 @@ static struct i2c_driver ov7251_i2c_driv
+ 		.of_match_table = ov7251_of_match,
+ 		.acpi_match_table = ov7251_acpi_match,
+ 		.name  = "ov7251",
++		.pm = &ov7251_pm_ops,
+ 	},
+ 	.probe_new  = ov7251_probe,
+ 	.remove = ov7251_remove,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0725-media-i2c-Remove-.s_power-from-ov7251.patch b/target/linux/bcm27xx/patches-5.15/950-0725-media-i2c-Remove-.s_power-from-ov7251.patch
new file mode 100644
index 0000000000..0376a1a90a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0725-media-i2c-Remove-.s_power-from-ov7251.patch
@@ -0,0 +1,89 @@
+From 27a8c7902543676a670424b28fb9b43c6c4ce59b Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Tue, 15 Feb 2022 23:07:36 +0000
+Subject: [PATCH] media: i2c: Remove .s_power() from ov7251
+
+The .s_power() callback is deprecated, and now that we have pm_runtime
+functionality in the driver there's no further use for it. Delete the
+function.
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+Reported-by: kernel test robot <lkp@intel.com>
+---
+ drivers/media/i2c/ov7251.c | 44 +-------------------------------------
+ 1 file changed, 1 insertion(+), 43 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -903,43 +903,6 @@ static int __maybe_unused ov7251_sensor_
+ 	return ov7251_set_power_on(ov7251);
+ }
+ 
+-static int ov7251_s_power(struct v4l2_subdev *sd, int on)
+-{
+-	struct ov7251 *ov7251 = to_ov7251(sd);
+-	int ret = 0;
+-
+-	mutex_lock(&ov7251->lock);
+-
+-	/* If the power state is not modified - no work to do. */
+-	if (ov7251->power_on == !!on)
+-		goto exit;
+-
+-	if (on) {
+-		ret = ov7251_set_power_on(ov7251);
+-		if (ret < 0)
+-			goto exit;
+-
+-		ret = ov7251_set_register_array(ov7251,
+-					ov7251_global_init_setting,
+-					ARRAY_SIZE(ov7251_global_init_setting));
+-		if (ret < 0) {
+-			dev_err(ov7251->dev, "could not set init registers\n");
+-			ov7251_set_power_off(ov7251);
+-			goto exit;
+-		}
+-
+-		ov7251->power_on = true;
+-	} else {
+-		ov7251_set_power_off(ov7251);
+-		ov7251->power_on = false;
+-	}
+-
+-exit:
+-	mutex_unlock(&ov7251->lock);
+-
+-	return ret;
+-}
+-
+ static int ov7251_set_hflip(struct ov7251 *ov7251, s32 value)
+ {
+ 	u8 val = ov7251->timing_format2;
+@@ -1384,10 +1347,6 @@ exit:
+ 	return ret;
+ }
+ 
+-static const struct v4l2_subdev_core_ops ov7251_core_ops = {
+-	.s_power = ov7251_s_power,
+-};
+-
+ static const struct v4l2_subdev_video_ops ov7251_video_ops = {
+ 	.s_stream = ov7251_s_stream,
+ 	.g_frame_interval = ov7251_get_frame_interval,
+@@ -1405,7 +1364,6 @@ static const struct v4l2_subdev_pad_ops
+ };
+ 
+ static const struct v4l2_subdev_ops ov7251_subdev_ops = {
+-	.core = &ov7251_core_ops,
+ 	.video = &ov7251_video_ops,
+ 	.pad = &ov7251_subdev_pad_ops,
+ };
+@@ -1701,7 +1659,7 @@ err_pm_runtime:
+ 	pm_runtime_disable(ov7251->dev);
+ 	pm_runtime_put_noidle(ov7251->dev);
+ power_down:
+-	ov7251_s_power(&ov7251->sd, false);
++	ov7251_set_power_off(ov7251);
+ free_entity:
+ 	media_entity_cleanup(&ov7251->sd.entity);
+ free_ctrl:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0726-media-i2c-ov7251-Reinstate-setting-ov7251_global_ini.patch b/target/linux/bcm27xx/patches-5.15/950-0726-media-i2c-ov7251-Reinstate-setting-ov7251_global_ini.patch
new file mode 100644
index 0000000000..82370ae81f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0726-media-i2c-ov7251-Reinstate-setting-ov7251_global_ini.patch
@@ -0,0 +1,32 @@
+From ea202c2aaa3c63ff1296fcc85e836efdb3af1cb2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 14:48:30 +0000
+Subject: [PATCH] media: i2c: ov7251: Reinstate setting
+ ov7251_global_init_setting
+
+"media: i2c: Remove .s_power() from ov7251" removed the call that
+sent ov7251_global_init_setting to the sensor. Send it when starting
+streaming.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -1249,6 +1249,14 @@ static int ov7251_s_stream(struct v4l2_s
+ 		if (ret < 0)
+ 			return ret;
+ 
++		ret = ov7251_set_register_array(ov7251,
++					ov7251_global_init_setting,
++					ARRAY_SIZE(ov7251_global_init_setting));
++		if (ret < 0) {
++			dev_err(ov7251->dev, "could not set global_init_setting\n");
++			goto err_power_down;
++		}
++
+ 		ret = ov7251_pll_configure(ov7251);
+ 		if (ret) {
+ 			dev_err(ov7251->dev, "error configuring PLLs\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0727-media-i2c-ov7251-V4L2_CID_PIXEL_RATE-is-fixed.patch b/target/linux/bcm27xx/patches-5.15/950-0727-media-i2c-ov7251-V4L2_CID_PIXEL_RATE-is-fixed.patch
new file mode 100644
index 0000000000..80503693b6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0727-media-i2c-ov7251-V4L2_CID_PIXEL_RATE-is-fixed.patch
@@ -0,0 +1,104 @@
+From 1fbe6c846412c7c114f599fef881366f1e81ef9c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 12 Feb 2022 09:47:38 +0000
+Subject: [PATCH] media: i2c: ov7251: V4L2_CID_PIXEL_RATE is fixed
+
+The pixel rate doesn't actually change based on the mode, and
+can not be set by userspace.
+
+Fix the control. The control is already read only as set by the core.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 24 +++++-------------------
+ 1 file changed, 5 insertions(+), 19 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -54,6 +54,8 @@
+ #define OV7251_PLL2_SYS_DIV_REG		0x309a
+ #define OV7251_PLL2_ADC_DIV_REG		0x309b
+ 
++#define OV7251_PIXEL_CLOCK 48000000
++
+ struct reg_value {
+ 	u16 reg;
+ 	u8 val;
+@@ -64,7 +66,6 @@ struct ov7251_mode_info {
+ 	u32 height;
+ 	const struct reg_value *data;
+ 	u32 data_size;
+-	u32 pixel_clock;
+ 	u32 link_freq;
+ 	u16 exposure_max;
+ 	u16 exposure_def;
+@@ -112,7 +113,6 @@ struct ov7251 {
+ 	const struct ov7251_mode_info *current_mode;
+ 
+ 	struct v4l2_ctrl_handler ctrls;
+-	struct v4l2_ctrl *pixel_clock;
+ 	struct v4l2_ctrl *link_freq;
+ 	struct v4l2_ctrl *exposure;
+ 	struct v4l2_ctrl *gain;
+@@ -591,7 +591,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga_30fps,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga_30fps),
+-		.pixel_clock = 48000000,
+ 		.link_freq = 0, /* an index in link_freq[] */
+ 		.exposure_max = 1704,
+ 		.exposure_def = 504,
+@@ -605,7 +604,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga_60fps,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga_60fps),
+-		.pixel_clock = 48000000,
+ 		.link_freq = 0, /* an index in link_freq[] */
+ 		.exposure_max = 840,
+ 		.exposure_def = 504,
+@@ -619,7 +617,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga_90fps,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga_90fps),
+-		.pixel_clock = 48000000,
+ 		.link_freq = 0, /* an index in link_freq[] */
+ 		.exposure_max = 552,
+ 		.exposure_def = 504,
+@@ -1155,11 +1152,6 @@ static int ov7251_set_format(struct v4l2
+ 	__crop->height = new_mode->height;
+ 
+ 	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+-		ret = __v4l2_ctrl_s_ctrl_int64(ov7251->pixel_clock,
+-					       new_mode->pixel_clock);
+-		if (ret < 0)
+-			goto exit;
+-
+ 		ret = __v4l2_ctrl_s_ctrl(ov7251->link_freq,
+ 					 new_mode->link_freq);
+ 		if (ret < 0)
+@@ -1319,11 +1311,6 @@ static int ov7251_set_frame_interval(str
+ 	new_mode = ov7251_find_mode_by_ival(ov7251, &fi->interval);
+ 
+ 	if (new_mode != ov7251->current_mode) {
+-		ret = __v4l2_ctrl_s_ctrl_int64(ov7251->pixel_clock,
+-					       new_mode->pixel_clock);
+-		if (ret < 0)
+-			goto exit;
+-
+ 		ret = __v4l2_ctrl_s_ctrl(ov7251->link_freq,
+ 					 new_mode->link_freq);
+ 		if (ret < 0)
+@@ -1571,10 +1558,9 @@ static int ov7251_probe(struct i2c_clien
+ 				     V4L2_CID_TEST_PATTERN,
+ 				     ARRAY_SIZE(ov7251_test_pattern_menu) - 1,
+ 				     0, 0, ov7251_test_pattern_menu);
+-	ov7251->pixel_clock = v4l2_ctrl_new_std(&ov7251->ctrls,
+-						&ov7251_ctrl_ops,
+-						V4L2_CID_PIXEL_RATE,
+-						1, INT_MAX, 1, 1);
++	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
++			  V4L2_CID_PIXEL_RATE, OV7251_PIXEL_CLOCK,
++			  OV7251_PIXEL_CLOCK, 1, OV7251_PIXEL_CLOCK);
+ 	ov7251->link_freq = v4l2_ctrl_new_int_menu(&ov7251->ctrls,
+ 						   &ov7251_ctrl_ops,
+ 						   V4L2_CID_LINK_FREQ,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0728-media-i2c-ov7251-V4L2_CID_LINK_FREQUENCY-is-fixed.patch b/target/linux/bcm27xx/patches-5.15/950-0728-media-i2c-ov7251-V4L2_CID_LINK_FREQUENCY-is-fixed.patch
new file mode 100644
index 0000000000..ddd9e6e3b2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0728-media-i2c-ov7251-V4L2_CID_LINK_FREQUENCY-is-fixed.patch
@@ -0,0 +1,107 @@
+From f8c8c6aed54e064f3ec36eeee0595ec4e2206d66 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 12 Feb 2022 09:53:47 +0000
+Subject: [PATCH] media: i2c: ov7251: V4L2_CID_LINK_FREQUENCY is fixed
+
+The link frequency does not change with the mode, so remove
+the special handling for it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 29 +++++++----------------------
+ 1 file changed, 7 insertions(+), 22 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -66,7 +66,6 @@ struct ov7251_mode_info {
+ 	u32 height;
+ 	const struct reg_value *data;
+ 	u32 data_size;
+-	u32 link_freq;
+ 	u16 exposure_max;
+ 	u16 exposure_def;
+ 	struct v4l2_fract timeperframe;
+@@ -113,7 +112,6 @@ struct ov7251 {
+ 	const struct ov7251_mode_info *current_mode;
+ 
+ 	struct v4l2_ctrl_handler ctrls;
+-	struct v4l2_ctrl *link_freq;
+ 	struct v4l2_ctrl *exposure;
+ 	struct v4l2_ctrl *gain;
+ 
+@@ -591,7 +589,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga_30fps,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga_30fps),
+-		.link_freq = 0, /* an index in link_freq[] */
+ 		.exposure_max = 1704,
+ 		.exposure_def = 504,
+ 		.timeperframe = {
+@@ -604,7 +601,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga_60fps,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga_60fps),
+-		.link_freq = 0, /* an index in link_freq[] */
+ 		.exposure_max = 840,
+ 		.exposure_def = 504,
+ 		.timeperframe = {
+@@ -617,7 +613,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga_90fps,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga_90fps),
+-		.link_freq = 0, /* an index in link_freq[] */
+ 		.exposure_max = 552,
+ 		.exposure_def = 504,
+ 		.timeperframe = {
+@@ -1152,11 +1147,6 @@ static int ov7251_set_format(struct v4l2
+ 	__crop->height = new_mode->height;
+ 
+ 	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+-		ret = __v4l2_ctrl_s_ctrl(ov7251->link_freq,
+-					 new_mode->link_freq);
+-		if (ret < 0)
+-			goto exit;
+-
+ 		ret = __v4l2_ctrl_modify_range(ov7251->exposure,
+ 					       1, new_mode->exposure_max,
+ 					       1, new_mode->exposure_def);
+@@ -1311,11 +1301,6 @@ static int ov7251_set_frame_interval(str
+ 	new_mode = ov7251_find_mode_by_ival(ov7251, &fi->interval);
+ 
+ 	if (new_mode != ov7251->current_mode) {
+-		ret = __v4l2_ctrl_s_ctrl(ov7251->link_freq,
+-					 new_mode->link_freq);
+-		if (ret < 0)
+-			goto exit;
+-
+ 		ret = __v4l2_ctrl_modify_range(ov7251->exposure,
+ 					       1, new_mode->exposure_max,
+ 					       1, new_mode->exposure_def);
+@@ -1464,6 +1449,7 @@ static int ov7251_probe(struct i2c_clien
+ {
+ 	struct v4l2_fwnode_device_properties props;
+ 	struct device *dev = &client->dev;
++	struct v4l2_ctrl *ctrl;
+ 	struct ov7251 *ov7251;
+ 	unsigned int rate = 0;
+ 	int ret;
+@@ -1561,13 +1547,12 @@ static int ov7251_probe(struct i2c_clien
+ 	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
+ 			  V4L2_CID_PIXEL_RATE, OV7251_PIXEL_CLOCK,
+ 			  OV7251_PIXEL_CLOCK, 1, OV7251_PIXEL_CLOCK);
+-	ov7251->link_freq = v4l2_ctrl_new_int_menu(&ov7251->ctrls,
+-						   &ov7251_ctrl_ops,
+-						   V4L2_CID_LINK_FREQ,
+-						   ARRAY_SIZE(link_freq) - 1,
+-						   0, link_freq);
+-	if (ov7251->link_freq)
+-		ov7251->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++	ctrl = v4l2_ctrl_new_int_menu(&ov7251->ctrls, &ov7251_ctrl_ops,
++				      V4L2_CID_LINK_FREQ,
++				      ARRAY_SIZE(link_freq) - 1,
++				      0, link_freq);
++	if (ctrl)
++		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
+ 	ov7251->sd.ctrl_handler = &ov7251->ctrls;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0729-media-i2c-ov7251-Initialise-current_mode-during-prob.patch b/target/linux/bcm27xx/patches-5.15/950-0729-media-i2c-ov7251-Initialise-current_mode-during-prob.patch
new file mode 100644
index 0000000000..84b1252e1b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0729-media-i2c-ov7251-Initialise-current_mode-during-prob.patch
@@ -0,0 +1,26 @@
+From cd239eeb0ed6bea434b88d38a5fd8a775f199144 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 12 Feb 2022 11:57:19 +0000
+Subject: [PATCH] media: i2c: ov7251: Initialise current_mode during
+ probe
+
+Initialise ov7251->current_mode during probe to avoid the issue
+of a NULL dereference should get_frame_interval be called before
+set_frame_interval or set_format.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -1529,6 +1529,8 @@ static int ov7251_probe(struct i2c_clien
+ 
+ 	mutex_init(&ov7251->lock);
+ 
++	ov7251->current_mode = &ov7251_mode_info_data[0];
++
+ 	v4l2_ctrl_handler_init(&ov7251->ctrls, 9);
+ 	ov7251->ctrls.lock = &ov7251->lock;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0730-media-i2c-ov7251-Add-V4L2_CID_HBLANK-control.patch b/target/linux/bcm27xx/patches-5.15/950-0730-media-i2c-ov7251-Add-V4L2_CID_HBLANK-control.patch
new file mode 100644
index 0000000000..c0f8f5dd83
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0730-media-i2c-ov7251-Add-V4L2_CID_HBLANK-control.patch
@@ -0,0 +1,85 @@
+From 45a2ad18add0e5c14d1cad5ef0c2c10097b583d9 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 12 Feb 2022 12:05:02 +0000
+Subject: [PATCH] media: i2c: ov7251: Add V4L2_CID_HBLANK control
+
+HBLANK is a fixed value in this driver, so add as a fixed
+read-only control.
+The value is updated during set_format as the V4L2 control is
+dependent on width, even though only one width is actually
+defined.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 18 +++++++++++++++++-
+ 1 file changed, 17 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -37,6 +37,8 @@
+ #define OV7251_AEC_EXPO_2		0x3502
+ #define OV7251_AEC_AGC_ADJ_0		0x350a
+ #define OV7251_AEC_AGC_ADJ_1		0x350b
++ /* HTS is registers 0x380c and 0x380d */
++#define OV7251_HTS			0x3a0
+ #define OV7251_TIMING_FORMAT1		0x3820
+ #define OV7251_TIMING_FORMAT1_VFLIP	BIT(2)
+ #define OV7251_TIMING_FORMAT2		0x3821
+@@ -114,6 +116,7 @@ struct ov7251 {
+ 	struct v4l2_ctrl_handler ctrls;
+ 	struct v4l2_ctrl *exposure;
+ 	struct v4l2_ctrl *gain;
++	struct v4l2_ctrl *hblank;
+ 
+ 	/* Cached register values */
+ 	u8 aec_pk_manual;
+@@ -1131,6 +1134,7 @@ static int ov7251_set_format(struct v4l2
+ 	struct v4l2_mbus_framefmt *__format;
+ 	struct v4l2_rect *__crop;
+ 	const struct ov7251_mode_info *new_mode;
++	s64 h_blank;
+ 	int ret = 0;
+ 
+ 	mutex_lock(&ov7251->lock);
+@@ -1147,6 +1151,11 @@ static int ov7251_set_format(struct v4l2
+ 	__crop->height = new_mode->height;
+ 
+ 	if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
++		h_blank = OV7251_HTS - new_mode->width;
++		__v4l2_ctrl_modify_range(ov7251->hblank, h_blank,
++					 h_blank, 1, h_blank);
++		__v4l2_ctrl_s_ctrl(ov7251->hblank, h_blank);
++
+ 		ret = __v4l2_ctrl_modify_range(ov7251->exposure,
+ 					       1, new_mode->exposure_max,
+ 					       1, new_mode->exposure_def);
+@@ -1452,6 +1461,7 @@ static int ov7251_probe(struct i2c_clien
+ 	struct v4l2_ctrl *ctrl;
+ 	struct ov7251 *ov7251;
+ 	unsigned int rate = 0;
++	u32 h_blank;
+ 	int ret;
+ 	int i;
+ 
+@@ -1531,7 +1541,7 @@ static int ov7251_probe(struct i2c_clien
+ 
+ 	ov7251->current_mode = &ov7251_mode_info_data[0];
+ 
+-	v4l2_ctrl_handler_init(&ov7251->ctrls, 9);
++	v4l2_ctrl_handler_init(&ov7251->ctrls, 10);
+ 	ov7251->ctrls.lock = &ov7251->lock;
+ 
+ 	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
+@@ -1555,6 +1565,12 @@ static int ov7251_probe(struct i2c_clien
+ 				      0, link_freq);
+ 	if (ctrl)
+ 		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++	h_blank = OV7251_HTS - ov7251->current_mode->width;
++	ov7251->hblank = v4l2_ctrl_new_std(&ov7251->ctrls, NULL,
++					   V4L2_CID_HBLANK, h_blank,
++					   h_blank, 1, h_blank);
++	if (ov7251->hblank)
++		ov7251->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
+ 	ov7251->sd.ctrl_handler = &ov7251->ctrls;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0731-media-i2c-ov7251-Do-not-reset-gain-on-mode-change.patch b/target/linux/bcm27xx/patches-5.15/950-0731-media-i2c-ov7251-Do-not-reset-gain-on-mode-change.patch
new file mode 100644
index 0000000000..fba048c722
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0731-media-i2c-ov7251-Do-not-reset-gain-on-mode-change.patch
@@ -0,0 +1,58 @@
+From 46773bdd99e4ab1bd0d65931ef782122f4f4a031 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Sat, 12 Feb 2022 12:33:13 +0000
+Subject: [PATCH] media: i2c: ov7251: Do not reset gain on mode change
+
+There is no reaon why changing mode should reset the analogue
+gain of the sensor, and it's not the behaviour that userspace
+will be expecting.
+Remove the reset.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 13 ++-----------
+ 1 file changed, 2 insertions(+), 11 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -115,7 +115,6 @@ struct ov7251 {
+ 
+ 	struct v4l2_ctrl_handler ctrls;
+ 	struct v4l2_ctrl *exposure;
+-	struct v4l2_ctrl *gain;
+ 	struct v4l2_ctrl *hblank;
+ 
+ 	/* Cached register values */
+@@ -1167,10 +1166,6 @@ static int ov7251_set_format(struct v4l2
+ 		if (ret < 0)
+ 			goto exit;
+ 
+-		ret = __v4l2_ctrl_s_ctrl(ov7251->gain, 16);
+-		if (ret < 0)
+-			goto exit;
+-
+ 		ov7251->current_mode = new_mode;
+ 	}
+ 
+@@ -1321,10 +1316,6 @@ static int ov7251_set_frame_interval(str
+ 		if (ret < 0)
+ 			goto exit;
+ 
+-		ret = __v4l2_ctrl_s_ctrl(ov7251->gain, 16);
+-		if (ret < 0)
+-			goto exit;
+-
+ 		ov7251->current_mode = new_mode;
+ 	}
+ 
+@@ -1550,8 +1541,8 @@ static int ov7251_probe(struct i2c_clien
+ 			  V4L2_CID_VFLIP, 0, 1, 1, 0);
+ 	ov7251->exposure = v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
+ 					     V4L2_CID_EXPOSURE, 1, 32, 1, 32);
+-	ov7251->gain = v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
+-					 V4L2_CID_GAIN, 16, 1023, 1, 16);
++	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops, V4L2_CID_GAIN,
++			  16, 1023, 1, 16);
+ 	v4l2_ctrl_new_std_menu_items(&ov7251->ctrls, &ov7251_ctrl_ops,
+ 				     V4L2_CID_TEST_PATTERN,
+ 				     ARRAY_SIZE(ov7251_test_pattern_menu) - 1,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0732-media-i2c-ov7251-Fix-link_freq-validation-loop.patch b/target/linux/bcm27xx/patches-5.15/950-0732-media-i2c-ov7251-Fix-link_freq-validation-loop.patch
new file mode 100644
index 0000000000..560b31d852
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0732-media-i2c-ov7251-Fix-link_freq-validation-loop.patch
@@ -0,0 +1,33 @@
+From fd7067bd245a90d957b70ce8be96b2a4d7b970a6 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 15:57:01 +0000
+Subject: [PATCH] media: i2c: ov7251: Fix link_freq validation loop
+
+If only one link frequency was configured, then ov7251_check_hwcfg
+failed as the conditions weren't checked in the appropriate places.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -1390,14 +1390,14 @@ static int ov7251_check_hwcfg(struct ov7
+ 
+ 	freq_found = false;
+ 	for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
+-		if (freq_found)
+-			break;
+-
+ 		for (j = 0; j < ARRAY_SIZE(link_freq); j++)
+ 			if (bus_cfg.link_frequencies[i] == link_freq[j]) {
+ 				freq_found = true;
+ 				break;
+ 			}
++
++		if (freq_found)
++			break;
+ 	}
+ 
+ 	if (i == bus_cfg.nr_of_link_frequencies) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0733-media-i2c-ov7251-Add-get_selection-for-NATIVE_SIZE-C.patch b/target/linux/bcm27xx/patches-5.15/950-0733-media-i2c-ov7251-Add-get_selection-for-NATIVE_SIZE-C.patch
new file mode 100644
index 0000000000..ae76c0551b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0733-media-i2c-ov7251-Add-get_selection-for-NATIVE_SIZE-C.patch
@@ -0,0 +1,78 @@
+From 71fdb5d9021eb4aba727af8e5a7daedeb2f00860 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 16:23:23 +0000
+Subject: [PATCH] media: i2c: ov7251: Add get_selection for
+ NATIVE_SIZE, CROP_BOUNDS, CROP_DEFAULT
+
+As required by libcamera, add get_selection handling for
+V4L2_SEL_TGT_NATIVE_SIZE, V4L2_SEL_TGT_CROP_DEFAULT, and
+V4L2_SEL_TGT_CROP_BOUNDS.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 45 ++++++++++++++++++++++++++++++++------
+ 1 file changed, 38 insertions(+), 7 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -56,6 +56,18 @@
+ #define OV7251_PLL2_SYS_DIV_REG		0x309a
+ #define OV7251_PLL2_ADC_DIV_REG		0x309b
+ 
++/*
++ * OV7251 native and active pixel array size.
++ * Datasheet not available to confirm these values, so assume there are no
++ * border pixels.
++ */
++#define OV7251_NATIVE_WIDTH		640U
++#define OV7251_NATIVE_HEIGHT		480U
++#define OV7251_PIXEL_ARRAY_LEFT		0U
++#define OV7251_PIXEL_ARRAY_TOP		0U
++#define OV7251_PIXEL_ARRAY_WIDTH	640U
++#define OV7251_PIXEL_ARRAY_HEIGHT	480U
++
+ #define OV7251_PIXEL_CLOCK 48000000
+ 
+ struct reg_value {
+@@ -1212,15 +1224,34 @@ static int ov7251_get_selection(struct v
+ {
+ 	struct ov7251 *ov7251 = to_ov7251(sd);
+ 
+-	if (sel->target != V4L2_SEL_TGT_CROP)
+-		return -EINVAL;
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP:
++		mutex_lock(&ov7251->lock);
++		sel->r = *__ov7251_get_pad_crop(ov7251, sd_state, sel->pad,
++						sel->which);
++		mutex_unlock(&ov7251->lock);
+ 
+-	mutex_lock(&ov7251->lock);
+-	sel->r = *__ov7251_get_pad_crop(ov7251, sd_state, sel->pad,
+-					sel->which);
+-	mutex_unlock(&ov7251->lock);
++		return 0;
+ 
+-	return 0;
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++		sel->r.top = 0;
++		sel->r.left = 0;
++		sel->r.width = OV7251_NATIVE_WIDTH;
++		sel->r.height = OV7251_NATIVE_HEIGHT;
++
++		return 0;
++
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		sel->r.top = OV7251_PIXEL_ARRAY_TOP;
++		sel->r.left = OV7251_PIXEL_ARRAY_LEFT;
++		sel->r.width = OV7251_PIXEL_ARRAY_WIDTH;
++		sel->r.height = OV7251_PIXEL_ARRAY_HEIGHT;
++
++		return 0;
++	}
++
++	return -EINVAL;
+ }
+ 
+ static int ov7251_s_stream(struct v4l2_subdev *subdev, int enable)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0734-media-i2c-ov7251-Set-VTS-instead-of-having-full-tabl.patch b/target/linux/bcm27xx/patches-5.15/950-0734-media-i2c-ov7251-Set-VTS-instead-of-having-full-tabl.patch
new file mode 100644
index 0000000000..3e08ae27a6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0734-media-i2c-ov7251-Set-VTS-instead-of-having-full-tabl.patch
@@ -0,0 +1,373 @@
+From 26934caec8e9a365d71e437333998002b2f2879c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 16:24:51 +0000
+Subject: [PATCH] media: i2c: ov7251: Set VTS instead of having full
+ tables for FPS.
+
+The driver did have a full copy of the registers for each of
+the 30, 60, and 90 fps modes. The main difference between them were
+registers 0x380e/f which set the total height of the frame (VTS).
+
+Remove the excess register settings, and Set that register value
+explicitly for each mode.
+
+This has dropped a change for the 30fps mode to registers 0x3016,
+0x3017, 0x3018, 0x301a, 0x301b, and 0x301c. The data available
+doesn't describe these registers, but the sensor seems fully
+functional without the alternate settings.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 286 +++----------------------------------
+ 1 file changed, 21 insertions(+), 265 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -39,6 +39,8 @@
+ #define OV7251_AEC_AGC_ADJ_1		0x350b
+  /* HTS is registers 0x380c and 0x380d */
+ #define OV7251_HTS			0x3a0
++#define OV7251_VTS_HIGH			0x380e
++#define OV7251_VTS_LOW			0x380f
+ #define OV7251_TIMING_FORMAT1		0x3820
+ #define OV7251_TIMING_FORMAT1_VFLIP	BIT(2)
+ #define OV7251_TIMING_FORMAT2		0x3821
+@@ -82,6 +84,7 @@ struct ov7251_mode_info {
+ 	u32 data_size;
+ 	u16 exposure_max;
+ 	u16 exposure_def;
++	u16 vts;
+ 	struct v4l2_fract timeperframe;
+ };
+ 
+@@ -204,263 +207,7 @@ static const struct reg_value ov7251_glo
+ 	{ 0x303b, 0x02 },
+ };
+ 
+-static const struct reg_value ov7251_setting_vga_30fps[] = {
+-	{ 0x3005, 0x00 },
+-	{ 0x3012, 0xc0 },
+-	{ 0x3013, 0xd2 },
+-	{ 0x3014, 0x04 },
+-	{ 0x3016, 0xf0 },
+-	{ 0x3017, 0xf0 },
+-	{ 0x3018, 0xf0 },
+-	{ 0x301a, 0xf0 },
+-	{ 0x301b, 0xf0 },
+-	{ 0x301c, 0xf0 },
+-	{ 0x3023, 0x05 },
+-	{ 0x3037, 0xf0 },
+-	{ 0x3106, 0xda },
+-	{ 0x3503, 0x07 },
+-	{ 0x3509, 0x10 },
+-	{ 0x3600, 0x1c },
+-	{ 0x3602, 0x62 },
+-	{ 0x3620, 0xb7 },
+-	{ 0x3622, 0x04 },
+-	{ 0x3626, 0x21 },
+-	{ 0x3627, 0x30 },
+-	{ 0x3630, 0x44 },
+-	{ 0x3631, 0x35 },
+-	{ 0x3634, 0x60 },
+-	{ 0x3636, 0x00 },
+-	{ 0x3662, 0x01 },
+-	{ 0x3663, 0x70 },
+-	{ 0x3664, 0x50 },
+-	{ 0x3666, 0x0a },
+-	{ 0x3669, 0x1a },
+-	{ 0x366a, 0x00 },
+-	{ 0x366b, 0x50 },
+-	{ 0x3673, 0x01 },
+-	{ 0x3674, 0xff },
+-	{ 0x3675, 0x03 },
+-	{ 0x3705, 0xc1 },
+-	{ 0x3709, 0x40 },
+-	{ 0x373c, 0x08 },
+-	{ 0x3742, 0x00 },
+-	{ 0x3757, 0xb3 },
+-	{ 0x3788, 0x00 },
+-	{ 0x37a8, 0x01 },
+-	{ 0x37a9, 0xc0 },
+-	{ 0x3800, 0x00 },
+-	{ 0x3801, 0x04 },
+-	{ 0x3802, 0x00 },
+-	{ 0x3803, 0x04 },
+-	{ 0x3804, 0x02 },
+-	{ 0x3805, 0x8b },
+-	{ 0x3806, 0x01 },
+-	{ 0x3807, 0xeb },
+-	{ 0x3808, 0x02 }, /* width high */
+-	{ 0x3809, 0x80 }, /* width low */
+-	{ 0x380a, 0x01 }, /* height high */
+-	{ 0x380b, 0xe0 }, /* height low */
+-	{ 0x380c, 0x03 }, /* total horiz timing high */
+-	{ 0x380d, 0xa0 }, /* total horiz timing low */
+-	{ 0x380e, 0x06 }, /* total vertical timing high */
+-	{ 0x380f, 0xbc }, /* total vertical timing low */
+-	{ 0x3810, 0x00 },
+-	{ 0x3811, 0x04 },
+-	{ 0x3812, 0x00 },
+-	{ 0x3813, 0x05 },
+-	{ 0x3814, 0x11 },
+-	{ 0x3815, 0x11 },
+-	{ 0x3820, 0x40 },
+-	{ 0x3821, 0x00 },
+-	{ 0x382f, 0x0e },
+-	{ 0x3832, 0x00 },
+-	{ 0x3833, 0x05 },
+-	{ 0x3834, 0x00 },
+-	{ 0x3835, 0x0c },
+-	{ 0x3837, 0x00 },
+-	{ 0x3b80, 0x00 },
+-	{ 0x3b81, 0xa5 },
+-	{ 0x3b82, 0x10 },
+-	{ 0x3b83, 0x00 },
+-	{ 0x3b84, 0x08 },
+-	{ 0x3b85, 0x00 },
+-	{ 0x3b86, 0x01 },
+-	{ 0x3b87, 0x00 },
+-	{ 0x3b88, 0x00 },
+-	{ 0x3b89, 0x00 },
+-	{ 0x3b8a, 0x00 },
+-	{ 0x3b8b, 0x05 },
+-	{ 0x3b8c, 0x00 },
+-	{ 0x3b8d, 0x00 },
+-	{ 0x3b8e, 0x00 },
+-	{ 0x3b8f, 0x1a },
+-	{ 0x3b94, 0x05 },
+-	{ 0x3b95, 0xf2 },
+-	{ 0x3b96, 0x40 },
+-	{ 0x3c00, 0x89 },
+-	{ 0x3c01, 0x63 },
+-	{ 0x3c02, 0x01 },
+-	{ 0x3c03, 0x00 },
+-	{ 0x3c04, 0x00 },
+-	{ 0x3c05, 0x03 },
+-	{ 0x3c06, 0x00 },
+-	{ 0x3c07, 0x06 },
+-	{ 0x3c0c, 0x01 },
+-	{ 0x3c0d, 0xd0 },
+-	{ 0x3c0e, 0x02 },
+-	{ 0x3c0f, 0x0a },
+-	{ 0x4001, 0x42 },
+-	{ 0x4004, 0x04 },
+-	{ 0x4005, 0x00 },
+-	{ 0x404e, 0x01 },
+-	{ 0x4300, 0xff },
+-	{ 0x4301, 0x00 },
+-	{ 0x4315, 0x00 },
+-	{ 0x4501, 0x48 },
+-	{ 0x4600, 0x00 },
+-	{ 0x4601, 0x4e },
+-	{ 0x4801, 0x0f },
+-	{ 0x4806, 0x0f },
+-	{ 0x4819, 0xaa },
+-	{ 0x4823, 0x3e },
+-	{ 0x4837, 0x19 },
+-	{ 0x4a0d, 0x00 },
+-	{ 0x4a47, 0x7f },
+-	{ 0x4a49, 0xf0 },
+-	{ 0x4a4b, 0x30 },
+-	{ 0x5000, 0x85 },
+-	{ 0x5001, 0x80 },
+-};
+-
+-static const struct reg_value ov7251_setting_vga_60fps[] = {
+-	{ 0x3005, 0x00 },
+-	{ 0x3012, 0xc0 },
+-	{ 0x3013, 0xd2 },
+-	{ 0x3014, 0x04 },
+-	{ 0x3016, 0x10 },
+-	{ 0x3017, 0x00 },
+-	{ 0x3018, 0x00 },
+-	{ 0x301a, 0x00 },
+-	{ 0x301b, 0x00 },
+-	{ 0x301c, 0x00 },
+-	{ 0x3023, 0x05 },
+-	{ 0x3037, 0xf0 },
+-	{ 0x3106, 0xda },
+-	{ 0x3503, 0x07 },
+-	{ 0x3509, 0x10 },
+-	{ 0x3600, 0x1c },
+-	{ 0x3602, 0x62 },
+-	{ 0x3620, 0xb7 },
+-	{ 0x3622, 0x04 },
+-	{ 0x3626, 0x21 },
+-	{ 0x3627, 0x30 },
+-	{ 0x3630, 0x44 },
+-	{ 0x3631, 0x35 },
+-	{ 0x3634, 0x60 },
+-	{ 0x3636, 0x00 },
+-	{ 0x3662, 0x01 },
+-	{ 0x3663, 0x70 },
+-	{ 0x3664, 0x50 },
+-	{ 0x3666, 0x0a },
+-	{ 0x3669, 0x1a },
+-	{ 0x366a, 0x00 },
+-	{ 0x366b, 0x50 },
+-	{ 0x3673, 0x01 },
+-	{ 0x3674, 0xff },
+-	{ 0x3675, 0x03 },
+-	{ 0x3705, 0xc1 },
+-	{ 0x3709, 0x40 },
+-	{ 0x373c, 0x08 },
+-	{ 0x3742, 0x00 },
+-	{ 0x3757, 0xb3 },
+-	{ 0x3788, 0x00 },
+-	{ 0x37a8, 0x01 },
+-	{ 0x37a9, 0xc0 },
+-	{ 0x3800, 0x00 },
+-	{ 0x3801, 0x04 },
+-	{ 0x3802, 0x00 },
+-	{ 0x3803, 0x04 },
+-	{ 0x3804, 0x02 },
+-	{ 0x3805, 0x8b },
+-	{ 0x3806, 0x01 },
+-	{ 0x3807, 0xeb },
+-	{ 0x3808, 0x02 }, /* width high */
+-	{ 0x3809, 0x80 }, /* width low */
+-	{ 0x380a, 0x01 }, /* height high */
+-	{ 0x380b, 0xe0 }, /* height low */
+-	{ 0x380c, 0x03 }, /* total horiz timing high */
+-	{ 0x380d, 0xa0 }, /* total horiz timing low */
+-	{ 0x380e, 0x03 }, /* total vertical timing high */
+-	{ 0x380f, 0x5c }, /* total vertical timing low */
+-	{ 0x3810, 0x00 },
+-	{ 0x3811, 0x04 },
+-	{ 0x3812, 0x00 },
+-	{ 0x3813, 0x05 },
+-	{ 0x3814, 0x11 },
+-	{ 0x3815, 0x11 },
+-	{ 0x3820, 0x40 },
+-	{ 0x3821, 0x00 },
+-	{ 0x382f, 0x0e },
+-	{ 0x3832, 0x00 },
+-	{ 0x3833, 0x05 },
+-	{ 0x3834, 0x00 },
+-	{ 0x3835, 0x0c },
+-	{ 0x3837, 0x00 },
+-	{ 0x3b80, 0x00 },
+-	{ 0x3b81, 0xa5 },
+-	{ 0x3b82, 0x10 },
+-	{ 0x3b83, 0x00 },
+-	{ 0x3b84, 0x08 },
+-	{ 0x3b85, 0x00 },
+-	{ 0x3b86, 0x01 },
+-	{ 0x3b87, 0x00 },
+-	{ 0x3b88, 0x00 },
+-	{ 0x3b89, 0x00 },
+-	{ 0x3b8a, 0x00 },
+-	{ 0x3b8b, 0x05 },
+-	{ 0x3b8c, 0x00 },
+-	{ 0x3b8d, 0x00 },
+-	{ 0x3b8e, 0x00 },
+-	{ 0x3b8f, 0x1a },
+-	{ 0x3b94, 0x05 },
+-	{ 0x3b95, 0xf2 },
+-	{ 0x3b96, 0x40 },
+-	{ 0x3c00, 0x89 },
+-	{ 0x3c01, 0x63 },
+-	{ 0x3c02, 0x01 },
+-	{ 0x3c03, 0x00 },
+-	{ 0x3c04, 0x00 },
+-	{ 0x3c05, 0x03 },
+-	{ 0x3c06, 0x00 },
+-	{ 0x3c07, 0x06 },
+-	{ 0x3c0c, 0x01 },
+-	{ 0x3c0d, 0xd0 },
+-	{ 0x3c0e, 0x02 },
+-	{ 0x3c0f, 0x0a },
+-	{ 0x4001, 0x42 },
+-	{ 0x4004, 0x04 },
+-	{ 0x4005, 0x00 },
+-	{ 0x404e, 0x01 },
+-	{ 0x4300, 0xff },
+-	{ 0x4301, 0x00 },
+-	{ 0x4315, 0x00 },
+-	{ 0x4501, 0x48 },
+-	{ 0x4600, 0x00 },
+-	{ 0x4601, 0x4e },
+-	{ 0x4801, 0x0f },
+-	{ 0x4806, 0x0f },
+-	{ 0x4819, 0xaa },
+-	{ 0x4823, 0x3e },
+-	{ 0x4837, 0x19 },
+-	{ 0x4a0d, 0x00 },
+-	{ 0x4a47, 0x7f },
+-	{ 0x4a49, 0xf0 },
+-	{ 0x4a4b, 0x30 },
+-	{ 0x5000, 0x85 },
+-	{ 0x5001, 0x80 },
+-};
+-
+-static const struct reg_value ov7251_setting_vga_90fps[] = {
++static const struct reg_value ov7251_setting_vga[] = {
+ 	{ 0x3005, 0x00 },
+ 	{ 0x3012, 0xc0 },
+ 	{ 0x3013, 0xd2 },
+@@ -518,8 +265,6 @@ static const struct reg_value ov7251_set
+ 	{ 0x380b, 0xe0 }, /* height low */
+ 	{ 0x380c, 0x03 }, /* total horiz timing high */
+ 	{ 0x380d, 0xa0 }, /* total horiz timing low */
+-	{ 0x380e, 0x02 }, /* total vertical timing high */
+-	{ 0x380f, 0x3c }, /* total vertical timing low */
+ 	{ 0x3810, 0x00 },
+ 	{ 0x3811, 0x04 },
+ 	{ 0x3812, 0x00 },
+@@ -601,10 +346,11 @@ static const struct ov7251_mode_info ov7
+ 	{
+ 		.width = 640,
+ 		.height = 480,
+-		.data = ov7251_setting_vga_30fps,
+-		.data_size = ARRAY_SIZE(ov7251_setting_vga_30fps),
++		.data = ov7251_setting_vga,
++		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+ 		.exposure_max = 1704,
+ 		.exposure_def = 504,
++		.vts = 0x6bc,
+ 		.timeperframe = {
+ 			.numerator = 100,
+ 			.denominator = 3000
+@@ -613,10 +359,11 @@ static const struct ov7251_mode_info ov7
+ 	{
+ 		.width = 640,
+ 		.height = 480,
+-		.data = ov7251_setting_vga_60fps,
+-		.data_size = ARRAY_SIZE(ov7251_setting_vga_60fps),
++		.data = ov7251_setting_vga,
++		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+ 		.exposure_max = 840,
+ 		.exposure_def = 504,
++		.vts = 0x35c,
+ 		.timeperframe = {
+ 			.numerator = 100,
+ 			.denominator = 6014
+@@ -625,10 +372,11 @@ static const struct ov7251_mode_info ov7
+ 	{
+ 		.width = 640,
+ 		.height = 480,
+-		.data = ov7251_setting_vga_90fps,
+-		.data_size = ARRAY_SIZE(ov7251_setting_vga_90fps),
++		.data = ov7251_setting_vga,
++		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+ 		.exposure_max = 552,
+ 		.exposure_def = 504,
++		.vts = 0x23c,
+ 		.timeperframe = {
+ 			.numerator = 100,
+ 			.denominator = 9043
+@@ -1289,6 +1037,14 @@ static int ov7251_s_stream(struct v4l2_s
+ 				ov7251->current_mode->height);
+ 			goto err_power_down;
+ 		}
++		ret = ov7251_write_reg(ov7251, OV7251_VTS_HIGH,
++				       ov7251->current_mode->vts >> 8);
++		if (ret)
++			goto err_power_down;
++		ret = ov7251_write_reg(ov7251, OV7251_VTS_LOW,
++				       ov7251->current_mode->vts & 0xff);
++		if (ret)
++			goto err_power_down;
+ 		ret = __v4l2_ctrl_handler_setup(&ov7251->ctrls);
+ 		if (ret < 0) {
+ 			dev_err(ov7251->dev, "could not sync v4l2 controls\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0735-media-i2c-ov7251-Limit-exposure-based-on-VTS.patch b/target/linux/bcm27xx/patches-5.15/950-0735-media-i2c-ov7251-Limit-exposure-based-on-VTS.patch
new file mode 100644
index 0000000000..77686190e5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0735-media-i2c-ov7251-Limit-exposure-based-on-VTS.patch
@@ -0,0 +1,78 @@
+From 1c779e83e5f78cadcd8dfc6cfca33e7aeb323f27 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 16:44:33 +0000
+Subject: [PATCH] media: i2c: ov7251: Limit exposure based on VTS
+
+The maximum exposure is dictated by VTS, so compute it rather
+than having the value in the mode table.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 14 ++++++--------
+ 1 file changed, 6 insertions(+), 8 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -37,6 +37,8 @@
+ #define OV7251_AEC_EXPO_2		0x3502
+ #define OV7251_AEC_AGC_ADJ_0		0x350a
+ #define OV7251_AEC_AGC_ADJ_1		0x350b
++/* Exposure must be at least 20 lines shorter than VTS */
++#define OV7251_EXPOSURE_OFFSET		20
+  /* HTS is registers 0x380c and 0x380d */
+ #define OV7251_HTS			0x3a0
+ #define OV7251_VTS_HIGH			0x380e
+@@ -82,7 +84,6 @@ struct ov7251_mode_info {
+ 	u32 height;
+ 	const struct reg_value *data;
+ 	u32 data_size;
+-	u16 exposure_max;
+ 	u16 exposure_def;
+ 	u16 vts;
+ 	struct v4l2_fract timeperframe;
+@@ -348,7 +349,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+-		.exposure_max = 1704,
+ 		.exposure_def = 504,
+ 		.vts = 0x6bc,
+ 		.timeperframe = {
+@@ -361,7 +361,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+-		.exposure_max = 840,
+ 		.exposure_def = 504,
+ 		.vts = 0x35c,
+ 		.timeperframe = {
+@@ -374,7 +373,6 @@ static const struct ov7251_mode_info ov7
+ 		.height = 480,
+ 		.data = ov7251_setting_vga,
+ 		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+-		.exposure_max = 552,
+ 		.exposure_def = 504,
+ 		.vts = 0x23c,
+ 		.timeperframe = {
+@@ -915,8 +913,8 @@ static int ov7251_set_format(struct v4l2
+ 					 h_blank, 1, h_blank);
+ 		__v4l2_ctrl_s_ctrl(ov7251->hblank, h_blank);
+ 
+-		ret = __v4l2_ctrl_modify_range(ov7251->exposure,
+-					       1, new_mode->exposure_max,
++		ret = __v4l2_ctrl_modify_range(ov7251->exposure, 1,
++					       new_mode->vts - OV7251_EXPOSURE_OFFSET,
+ 					       1, new_mode->exposure_def);
+ 		if (ret < 0)
+ 			goto exit;
+@@ -1092,8 +1090,8 @@ static int ov7251_set_frame_interval(str
+ 	new_mode = ov7251_find_mode_by_ival(ov7251, &fi->interval);
+ 
+ 	if (new_mode != ov7251->current_mode) {
+-		ret = __v4l2_ctrl_modify_range(ov7251->exposure,
+-					       1, new_mode->exposure_max,
++		ret = __v4l2_ctrl_modify_range(ov7251->exposure, 1,
++					       new_mode->vts - OV7251_EXPOSURE_OFFSET,
+ 					       1, new_mode->exposure_def);
+ 		if (ret < 0)
+ 			goto exit;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0736-media-i2c-ov7251-Separate-modes-from-frame-intervals.patch b/target/linux/bcm27xx/patches-5.15/950-0736-media-i2c-ov7251-Separate-modes-from-frame-intervals.patch
new file mode 100644
index 0000000000..6ad35fda06
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0736-media-i2c-ov7251-Separate-modes-from-frame-intervals.patch
@@ -0,0 +1,234 @@
+From 65e773354de288401a6c498d006b47b7f87e0936 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 17:00:27 +0000
+Subject: [PATCH] media: i2c: ov7251: Separate modes from frame
+ intervals
+
+The modes and frame intervals are independent, therefore
+separate them into 2 structures.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 85 ++++++++++++++++++--------------------
+ 1 file changed, 41 insertions(+), 44 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -79,14 +79,17 @@ struct reg_value {
+ 	u8 val;
+ };
+ 
++struct ov7251_frame_ival_info {
++	u16 vts;
++	struct v4l2_fract timeperframe;
++};
++
+ struct ov7251_mode_info {
+ 	u32 width;
+ 	u32 height;
+ 	const struct reg_value *data;
+ 	u32 data_size;
+ 	u16 exposure_def;
+-	u16 vts;
+-	struct v4l2_fract timeperframe;
+ };
+ 
+ struct ov7251_pll1_config {
+@@ -128,6 +131,7 @@ struct ov7251 {
+ 	struct regulator *analog_regulator;
+ 
+ 	const struct ov7251_mode_info *current_mode;
++	const struct ov7251_frame_ival_info *current_ival;
+ 
+ 	struct v4l2_ctrl_handler ctrls;
+ 	struct v4l2_ctrl *exposure;
+@@ -343,13 +347,8 @@ static const s64 link_freq[] = {
+ 	240000000,
+ };
+ 
+-static const struct ov7251_mode_info ov7251_mode_info_data[] = {
++static const struct ov7251_frame_ival_info ov7251_frame_ival_info_data[] = {
+ 	{
+-		.width = 640,
+-		.height = 480,
+-		.data = ov7251_setting_vga,
+-		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+-		.exposure_def = 504,
+ 		.vts = 0x6bc,
+ 		.timeperframe = {
+ 			.numerator = 100,
+@@ -357,11 +356,6 @@ static const struct ov7251_mode_info ov7
+ 		}
+ 	},
+ 	{
+-		.width = 640,
+-		.height = 480,
+-		.data = ov7251_setting_vga,
+-		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+-		.exposure_def = 504,
+ 		.vts = 0x35c,
+ 		.timeperframe = {
+ 			.numerator = 100,
+@@ -369,11 +363,6 @@ static const struct ov7251_mode_info ov7
+ 		}
+ 	},
+ 	{
+-		.width = 640,
+-		.height = 480,
+-		.data = ov7251_setting_vga,
+-		.data_size = ARRAY_SIZE(ov7251_setting_vga),
+-		.exposure_def = 504,
+ 		.vts = 0x23c,
+ 		.timeperframe = {
+ 			.numerator = 100,
+@@ -382,6 +371,16 @@ static const struct ov7251_mode_info ov7
+ 	},
+ };
+ 
++static const struct ov7251_mode_info ov7251_mode_info_data[] = {
++	{
++		.width = 640,
++		.height = 480,
++		.data = ov7251_setting_vga,
++		.data_size = ARRAY_SIZE(ov7251_setting_vga),
++		.exposure_def = 504,
++	},
++};
++
+ static int ov7251_regulators_enable(struct ov7251 *ov7251)
+ {
+ 	int ret;
+@@ -789,13 +788,13 @@ static int ov7251_enum_frame_ival(struct
+ 	unsigned int index = fie->index;
+ 	unsigned int i;
+ 
+-	for (i = 0; i < ARRAY_SIZE(ov7251_mode_info_data); i++) {
+-		if (fie->width != ov7251_mode_info_data[i].width ||
+-		    fie->height != ov7251_mode_info_data[i].height)
++	for (i = 0; i < ARRAY_SIZE(ov7251_frame_ival_info_data); i++) {
++		if (fie->width != ov7251_mode_info_data[0].width ||
++		    fie->height != ov7251_mode_info_data[0].height)
+ 			continue;
+ 
+ 		if (index-- == 0) {
+-			fie->interval = ov7251_mode_info_data[i].timeperframe;
++			fie->interval = ov7251_frame_ival_info_data[i].timeperframe;
+ 			return 0;
+ 		}
+ 	}
+@@ -854,23 +853,18 @@ static inline u32 avg_fps(const struct v
+ 	return (t->denominator + (t->numerator >> 1)) / t->numerator;
+ }
+ 
+-static const struct ov7251_mode_info *
+-ov7251_find_mode_by_ival(struct ov7251 *ov7251, struct v4l2_fract *timeperframe)
++static const struct ov7251_frame_ival_info *
++ov7251_find_frame_ival_by_ival(struct ov7251 *ov7251, struct v4l2_fract *timeperframe)
+ {
+-	const struct ov7251_mode_info *mode = ov7251->current_mode;
+ 	unsigned int fps_req = avg_fps(timeperframe);
+ 	unsigned int max_dist_match = (unsigned int) -1;
+ 	unsigned int i, n = 0;
+ 
+-	for (i = 0; i < ARRAY_SIZE(ov7251_mode_info_data); i++) {
++	for (i = 0; i < ARRAY_SIZE(ov7251_frame_ival_info_data); i++) {
+ 		unsigned int dist;
+ 		unsigned int fps_tmp;
+ 
+-		if (mode->width != ov7251_mode_info_data[i].width ||
+-		    mode->height != ov7251_mode_info_data[i].height)
+-			continue;
+-
+-		fps_tmp = avg_fps(&ov7251_mode_info_data[i].timeperframe);
++		fps_tmp = avg_fps(&ov7251_frame_ival_info_data[i].timeperframe);
+ 
+ 		dist = abs(fps_req - fps_tmp);
+ 
+@@ -880,7 +874,7 @@ ov7251_find_mode_by_ival(struct ov7251 *
+ 		}
+ 	}
+ 
+-	return &ov7251_mode_info_data[n];
++	return &ov7251_frame_ival_info_data[n];
+ }
+ 
+ static int ov7251_set_format(struct v4l2_subdev *sd,
+@@ -914,7 +908,8 @@ static int ov7251_set_format(struct v4l2
+ 		__v4l2_ctrl_s_ctrl(ov7251->hblank, h_blank);
+ 
+ 		ret = __v4l2_ctrl_modify_range(ov7251->exposure, 1,
+-					       new_mode->vts - OV7251_EXPOSURE_OFFSET,
++					       ov7251->current_ival->vts -
++							OV7251_EXPOSURE_OFFSET,
+ 					       1, new_mode->exposure_def);
+ 		if (ret < 0)
+ 			goto exit;
+@@ -1036,11 +1031,11 @@ static int ov7251_s_stream(struct v4l2_s
+ 			goto err_power_down;
+ 		}
+ 		ret = ov7251_write_reg(ov7251, OV7251_VTS_HIGH,
+-				       ov7251->current_mode->vts >> 8);
++				       ov7251->current_ival->vts >> 8);
+ 		if (ret)
+ 			goto err_power_down;
+ 		ret = ov7251_write_reg(ov7251, OV7251_VTS_LOW,
+-				       ov7251->current_mode->vts & 0xff);
++				       ov7251->current_ival->vts & 0xff);
+ 		if (ret)
+ 			goto err_power_down;
+ 		ret = __v4l2_ctrl_handler_setup(&ov7251->ctrls);
+@@ -1073,7 +1068,7 @@ static int ov7251_get_frame_interval(str
+ 	struct ov7251 *ov7251 = to_ov7251(subdev);
+ 
+ 	mutex_lock(&ov7251->lock);
+-	fi->interval = ov7251->current_mode->timeperframe;
++	fi->interval = ov7251->current_ival->timeperframe;
+ 	mutex_unlock(&ov7251->lock);
+ 
+ 	return 0;
+@@ -1083,28 +1078,29 @@ static int ov7251_set_frame_interval(str
+ 				     struct v4l2_subdev_frame_interval *fi)
+ {
+ 	struct ov7251 *ov7251 = to_ov7251(subdev);
+-	const struct ov7251_mode_info *new_mode;
++	const struct ov7251_frame_ival_info *new_ival;
+ 	int ret = 0;
+ 
+ 	mutex_lock(&ov7251->lock);
+-	new_mode = ov7251_find_mode_by_ival(ov7251, &fi->interval);
++	new_ival = ov7251_find_frame_ival_by_ival(ov7251, &fi->interval);
+ 
+-	if (new_mode != ov7251->current_mode) {
++	if (new_ival != ov7251->current_ival) {
+ 		ret = __v4l2_ctrl_modify_range(ov7251->exposure, 1,
+-					       new_mode->vts - OV7251_EXPOSURE_OFFSET,
+-					       1, new_mode->exposure_def);
++					       new_ival->vts -
++							OV7251_EXPOSURE_OFFSET,
++					       1, ov7251->current_mode->exposure_def);
+ 		if (ret < 0)
+ 			goto exit;
+ 
+ 		ret = __v4l2_ctrl_s_ctrl(ov7251->exposure,
+-					 new_mode->exposure_def);
++					 ov7251->current_mode->exposure_def);
+ 		if (ret < 0)
+ 			goto exit;
+ 
+-		ov7251->current_mode = new_mode;
++		ov7251->current_ival = new_ival;
+ 	}
+ 
+-	fi->interval = ov7251->current_mode->timeperframe;
++	fi->interval = ov7251->current_ival->timeperframe;
+ 
+ exit:
+ 	mutex_unlock(&ov7251->lock);
+@@ -1316,6 +1312,7 @@ static int ov7251_probe(struct i2c_clien
+ 	mutex_init(&ov7251->lock);
+ 
+ 	ov7251->current_mode = &ov7251_mode_info_data[0];
++	ov7251->current_ival = &ov7251_frame_ival_info_data[0];
+ 
+ 	v4l2_ctrl_handler_init(&ov7251->ctrls, 10);
+ 	ov7251->ctrls.lock = &ov7251->lock;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0737-media-i2c-ov7251-Add-V4L2_CID_VBLANK.patch b/target/linux/bcm27xx/patches-5.15/950-0737-media-i2c-ov7251-Add-V4L2_CID_VBLANK.patch
new file mode 100644
index 0000000000..c4c3c221d7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0737-media-i2c-ov7251-Add-V4L2_CID_VBLANK.patch
@@ -0,0 +1,153 @@
+From 9e6a5b925f3b401c9a047237c0014367655b291a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 18:08:39 +0000
+Subject: [PATCH] media: i2c: ov7251: Add V4L2_CID_VBLANK
+
+This is a raw sensor so should be implementing V4L2_CID_VBLANK
+instead of the frame_interval ops, as per docs at
+https://www.kernel.org/doc/html/latest/driver-api/media/camera-sensor.html#frame-interval-configuration
+
+This driver already implemented the frame_interval ops, so
+removing them would be a regression.
+Implement V4L2_CID_VBLANK, with the frame_interval ops setting
+that control.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 56 +++++++++++++++++++++++++++++---------
+ 1 file changed, 43 insertions(+), 13 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -43,6 +43,8 @@
+ #define OV7251_HTS			0x3a0
+ #define OV7251_VTS_HIGH			0x380e
+ #define OV7251_VTS_LOW			0x380f
++#define OV7251_VTS_MIN_OFFSET		92
++#define OV7251_VTS_MAX			0x7fff
+ #define OV7251_TIMING_FORMAT1		0x3820
+ #define OV7251_TIMING_FORMAT1_VFLIP	BIT(2)
+ #define OV7251_TIMING_FORMAT2		0x3821
+@@ -136,6 +138,7 @@ struct ov7251 {
+ 	struct v4l2_ctrl_handler ctrls;
+ 	struct v4l2_ctrl *exposure;
+ 	struct v4l2_ctrl *hblank;
++	struct v4l2_ctrl *vblank;
+ 
+ 	/* Cached register values */
+ 	u8 aec_pk_manual;
+@@ -688,6 +691,19 @@ static int ov7251_set_vflip(struct ov725
+ 	return ret;
+ }
+ 
++static int ov7251_set_vblank(struct ov7251 *ov7251, s32 value)
++{
++	u16 reg;
++	u8 val[2];
++
++	reg = OV7251_VTS_HIGH;
++	value += ov7251->current_mode->height;
++	val[0] = (value & 0xff00) >> 8; /* goes to OV7251_VTS_HIGH */
++	val[1] = value & 0xff;          /* goes to OV7251_VTS_LOW */
++
++	return ov7251_write_seq_regs(ov7251, reg, val, 2);
++}
++
+ static int ov7251_set_test_pattern(struct ov7251 *ov7251, s32 value)
+ {
+ 	u8 val = ov7251->pre_isp_00;
+@@ -714,9 +730,20 @@ static int ov7251_s_ctrl(struct v4l2_ctr
+ {
+ 	struct ov7251 *ov7251 = container_of(ctrl->handler,
+ 					     struct ov7251, ctrls);
++	s64 max;
+ 	int ret;
+ 
+ 	/* v4l2_ctrl_lock() locks our mutex */
++	switch (ctrl->id) {
++	case V4L2_CID_VBLANK:
++		/* Update max exposure while meeting expected vblanking */
++		max = ov7251->current_mode->height + ctrl->val - OV7251_EXPOSURE_OFFSET;
++		__v4l2_ctrl_modify_range(ov7251->exposure,
++					 ov7251->exposure->minimum, max,
++					 ov7251->exposure->step,
++					 ov7251->exposure->default_value);
++		break;
++	}
+ 
+ 	if (!pm_runtime_get_if_in_use(ov7251->dev))
+ 		return 0;
+@@ -737,6 +764,9 @@ static int ov7251_s_ctrl(struct v4l2_ctr
+ 	case V4L2_CID_VFLIP:
+ 		ret = ov7251_set_vflip(ov7251, ctrl->val);
+ 		break;
++	case V4L2_CID_VBLANK:
++		ret = ov7251_set_vblank(ov7251, ctrl->val);
++		break;
+ 	default:
+ 		ret = -EINVAL;
+ 		break;
+@@ -1030,14 +1060,6 @@ static int ov7251_s_stream(struct v4l2_s
+ 				ov7251->current_mode->height);
+ 			goto err_power_down;
+ 		}
+-		ret = ov7251_write_reg(ov7251, OV7251_VTS_HIGH,
+-				       ov7251->current_ival->vts >> 8);
+-		if (ret)
+-			goto err_power_down;
+-		ret = ov7251_write_reg(ov7251, OV7251_VTS_LOW,
+-				       ov7251->current_ival->vts & 0xff);
+-		if (ret)
+-			goto err_power_down;
+ 		ret = __v4l2_ctrl_handler_setup(&ov7251->ctrls);
+ 		if (ret < 0) {
+ 			dev_err(ov7251->dev, "could not sync v4l2 controls\n");
+@@ -1088,12 +1110,13 @@ static int ov7251_set_frame_interval(str
+ 		ret = __v4l2_ctrl_modify_range(ov7251->exposure, 1,
+ 					       new_ival->vts -
+ 							OV7251_EXPOSURE_OFFSET,
+-					       1, ov7251->current_mode->exposure_def);
++					       1, ov7251->exposure->val);
+ 		if (ret < 0)
+ 			goto exit;
+ 
+-		ret = __v4l2_ctrl_s_ctrl(ov7251->exposure,
+-					 ov7251->current_mode->exposure_def);
++		ret = __v4l2_ctrl_s_ctrl(ov7251->vblank,
++					 new_ival->vts -
++						ov7251->current_mode->height);
+ 		if (ret < 0)
+ 			goto exit;
+ 
+@@ -1233,7 +1256,7 @@ static int ov7251_probe(struct i2c_clien
+ 	struct v4l2_ctrl *ctrl;
+ 	struct ov7251 *ov7251;
+ 	unsigned int rate = 0;
+-	u32 h_blank;
++	u32 h_blank, v_blank, v_blank_max;
+ 	int ret;
+ 	int i;
+ 
+@@ -1314,7 +1337,7 @@ static int ov7251_probe(struct i2c_clien
+ 	ov7251->current_mode = &ov7251_mode_info_data[0];
+ 	ov7251->current_ival = &ov7251_frame_ival_info_data[0];
+ 
+-	v4l2_ctrl_handler_init(&ov7251->ctrls, 10);
++	v4l2_ctrl_handler_init(&ov7251->ctrls, 11);
+ 	ov7251->ctrls.lock = &ov7251->lock;
+ 
+ 	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
+@@ -1345,6 +1368,13 @@ static int ov7251_probe(struct i2c_clien
+ 	if (ov7251->hblank)
+ 		ov7251->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
++	v_blank = ov7251->current_ival->vts - ov7251->current_mode->height;
++	v_blank_max = OV7251_VTS_MAX - ov7251->current_mode->width;
++	ov7251->vblank = v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
++					   V4L2_CID_VBLANK,
++					   OV7251_VTS_MIN_OFFSET,
++					   v_blank_max, 1, v_blank);
++
+ 	ov7251->sd.ctrl_handler = &ov7251->ctrls;
+ 
+ 	if (ov7251->ctrls.error) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0738-media-i2c-ov7251-Switch-from-V4L2_CID_GAIN-to-V4L2_C.patch b/target/linux/bcm27xx/patches-5.15/950-0738-media-i2c-ov7251-Switch-from-V4L2_CID_GAIN-to-V4L2_C.patch
new file mode 100644
index 0000000000..651fe86631
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0738-media-i2c-ov7251-Switch-from-V4L2_CID_GAIN-to-V4L2_C.patch
@@ -0,0 +1,36 @@
+From ed38a89fe4fc0b668bfe68559fa4adf55fb4de63 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 18:31:56 +0000
+Subject: [PATCH] media: i2c: ov7251: Switch from V4L2_CID_GAIN to
+ V4L2_CID_ANALOGUE_GAIN
+
+The control is specifically for analogue gain, therefore switch
+to using the control for that.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov7251.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/i2c/ov7251.c
++++ b/drivers/media/i2c/ov7251.c
+@@ -752,7 +752,7 @@ static int ov7251_s_ctrl(struct v4l2_ctr
+ 	case V4L2_CID_EXPOSURE:
+ 		ret = ov7251_set_exposure(ov7251, ctrl->val);
+ 		break;
+-	case V4L2_CID_GAIN:
++	case V4L2_CID_ANALOGUE_GAIN:
+ 		ret = ov7251_set_gain(ov7251, ctrl->val);
+ 		break;
+ 	case V4L2_CID_TEST_PATTERN:
+@@ -1346,8 +1346,8 @@ static int ov7251_probe(struct i2c_clien
+ 			  V4L2_CID_VFLIP, 0, 1, 1, 0);
+ 	ov7251->exposure = v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
+ 					     V4L2_CID_EXPOSURE, 1, 32, 1, 32);
+-	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops, V4L2_CID_GAIN,
+-			  16, 1023, 1, 16);
++	v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
++			  V4L2_CID_ANALOGUE_GAIN, 16, 1023, 1, 16);
+ 	v4l2_ctrl_new_std_menu_items(&ov7251->ctrls, &ov7251_ctrl_ops,
+ 				     V4L2_CID_TEST_PATTERN,
+ 				     ARRAY_SIZE(ov7251_test_pattern_menu) - 1,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0739-dtoverlays-Switch-ov7251-to-using-Media-Controller-b.patch b/target/linux/bcm27xx/patches-5.15/950-0739-dtoverlays-Switch-ov7251-to-using-Media-Controller-b.patch
new file mode 100644
index 0000000000..a6eab8ea22
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0739-dtoverlays-Switch-ov7251-to-using-Media-Controller-b.patch
@@ -0,0 +1,24 @@
+From b5f9685aca67cf0dded7914fa89c390891ce8210 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Feb 2022 18:12:36 +0000
+Subject: [PATCH] dtoverlays: Switch ov7251 to using Media Controller
+ by default
+
+We should have all the functionality required by now, so switch
+to using Media Controller so that it can be used with libcamera.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/ov7251-overlay.dts | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/boot/dts/overlays/ov7251-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+@@ -49,6 +49,7 @@
+ 		target = <&csi1>;
+ 		csi: __overlay__ {
+ 			status = "okay";
++			brcm,media-controller;
+ 
+ 			port {
+ 				csi1_ep: endpoint {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0740-drm-vc4-hvs-Fix-frame-count-register-readout.patch b/target/linux/bcm27xx/patches-5.15/950-0740-drm-vc4-hvs-Fix-frame-count-register-readout.patch
new file mode 100644
index 0000000000..1e7717af01
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0740-drm-vc4-hvs-Fix-frame-count-register-readout.patch
@@ -0,0 +1,114 @@
+From 77579d5ba35bf6e13f0ed09097c475f178d3c270 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 17 Feb 2022 10:55:26 +0100
+Subject: [PATCH] drm/vc4: hvs: Fix frame count register readout
+
+In order to get the field currently being output, the driver has been
+using the display FIFO frame count in the HVS, reading a 6-bit field at
+the offset 12 in the DISPSTATx register.
+
+While that field is indeed at that location for the FIFO 1 and 2, the
+one for the FIFO0 is actually in the DISPSTAT1 register, at the offset
+18.
+
+Fixes: e538092cb15c ("drm/vc4: Enable precise vblank timestamping for interlaced modes.")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c |  2 +-
+ drivers/gpu/drm/vc4/vc4_drv.h  |  1 +
+ drivers/gpu/drm/vc4/vc4_hvs.c  | 23 +++++++++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_regs.h | 12 ++++++++++--
+ 4 files changed, 35 insertions(+), 3 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -123,7 +123,7 @@ static bool vc4_crtc_get_scanout_positio
+ 		*vpos /= 2;
+ 
+ 		/* Use hpos to correct for field offset in interlaced mode. */
+-		if (VC4_GET_FIELD(val, SCALER_DISPSTATX_FRAME_COUNT) % 2)
++		if (vc4_hvs_get_fifo_frame_count(dev, vc4_crtc_state->assigned_channel) % 2)
+ 			*hpos += mode->crtc_htotal / 2;
+ 	}
+ 
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -967,6 +967,7 @@ void vc4_irq_reset(struct drm_device *de
+ extern struct platform_driver vc4_hvs_driver;
+ void vc4_hvs_stop_channel(struct drm_device *dev, unsigned int output);
+ int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output);
++u8 vc4_hvs_get_fifo_frame_count(struct drm_device *dev, unsigned int fifo);
+ int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_begin(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state);
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -388,6 +388,29 @@ static void vc5_hvs_update_gamma_lut(str
+ 	vc5_hvs_lut_load(crtc);
+ }
+ 
++u8 vc4_hvs_get_fifo_frame_count(struct drm_device *dev, unsigned int fifo)
++{
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	u8 field = 0;
++
++	switch (fifo) {
++	case 0:
++		field = VC4_GET_FIELD(HVS_READ(SCALER_DISPSTAT1),
++				      SCALER_DISPSTAT1_FRCNT0);
++		break;
++	case 1:
++		field = VC4_GET_FIELD(HVS_READ(SCALER_DISPSTAT1),
++				      SCALER_DISPSTAT1_FRCNT1);
++		break;
++	case 2:
++		field = VC4_GET_FIELD(HVS_READ(SCALER_DISPSTAT2),
++				      SCALER_DISPSTAT2_FRCNT2);
++		break;
++	}
++
++	return field;
++}
++
+ int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+--- a/drivers/gpu/drm/vc4/vc4_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_regs.h
+@@ -379,8 +379,6 @@
+ # define SCALER_DISPSTATX_MODE_EOF		3
+ # define SCALER_DISPSTATX_FULL			BIT(29)
+ # define SCALER_DISPSTATX_EMPTY			BIT(28)
+-# define SCALER_DISPSTATX_FRAME_COUNT_MASK	VC4_MASK(17, 12)
+-# define SCALER_DISPSTATX_FRAME_COUNT_SHIFT	12
+ # define SCALER_DISPSTATX_LINE_MASK		VC4_MASK(11, 0)
+ # define SCALER_DISPSTATX_LINE_SHIFT		0
+ 
+@@ -403,9 +401,15 @@
+ 						 (x) * (SCALER_DISPBKGND1 - \
+ 							SCALER_DISPBKGND0))
+ #define SCALER_DISPSTAT1                        0x00000058
++# define SCALER_DISPSTAT1_FRCNT0_MASK		VC4_MASK(23, 18)
++# define SCALER_DISPSTAT1_FRCNT0_SHIFT		18
++# define SCALER_DISPSTAT1_FRCNT1_MASK		VC4_MASK(17, 12)
++# define SCALER_DISPSTAT1_FRCNT1_SHIFT		12
++
+ #define SCALER_DISPSTATX(x)			(SCALER_DISPSTAT0 +        \
+ 						 (x) * (SCALER_DISPSTAT1 - \
+ 							SCALER_DISPSTAT0))
++
+ #define SCALER_DISPBASE1                        0x0000005c
+ #define SCALER_DISPBASEX(x)			(SCALER_DISPBASE0 +        \
+ 						 (x) * (SCALER_DISPBASE1 - \
+@@ -415,7 +419,11 @@
+ 						 (x) * (SCALER_DISPCTRL1 - \
+ 							SCALER_DISPCTRL0))
+ #define SCALER_DISPBKGND2                       0x00000064
++
+ #define SCALER_DISPSTAT2                        0x00000068
++# define SCALER_DISPSTAT2_FRCNT2_MASK		VC4_MASK(17, 12)
++# define SCALER_DISPSTAT2_FRCNT2_SHIFT		12
++
+ #define SCALER_DISPBASE2                        0x0000006c
+ #define SCALER_DISPALPHA2                       0x00000070
+ #define SCALER_GAMADDR                          0x00000078
diff --git a/target/linux/bcm27xx/patches-5.15/950-0741-drm-vc4-hvs-Use-pointer-to-HVS-in-HVS_READ-and-HVS_W.patch b/target/linux/bcm27xx/patches-5.15/950-0741-drm-vc4-hvs-Use-pointer-to-HVS-in-HVS_READ-and-HVS_W.patch
new file mode 100644
index 0000000000..5be04bd596
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0741-drm-vc4-hvs-Use-pointer-to-HVS-in-HVS_READ-and-HVS_W.patch
@@ -0,0 +1,496 @@
+From 2a2c0889e2695a39ea0479b5ebe30bd8ff8e3f21 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 14 Feb 2022 17:21:05 +0100
+Subject: [PATCH] drm/vc4: hvs: Use pointer to HVS in HVS_READ and
+ HVS_WRITE macros
+
+Those macros are really about the HVS itself, and thus its associated
+structure vc4_hvs, rather than the entire (virtual) vc4 device.
+
+Let's change those macros to use the hvs pointer directly, and change
+the calling sites accordingly.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c |  14 +++--
+ drivers/gpu/drm/vc4/vc4_drv.h  |  16 ++---
+ drivers/gpu/drm/vc4/vc4_hvs.c  | 109 +++++++++++++++++----------------
+ drivers/gpu/drm/vc4/vc4_kms.c  |   5 +-
+ 4 files changed, 77 insertions(+), 67 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -70,6 +70,7 @@ static const struct debugfs_reg32 crtc_r
+ static unsigned int
+ vc4_crtc_get_cob_allocation(struct vc4_dev *vc4, unsigned int channel)
+ {
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	u32 dispbase = HVS_READ(SCALER_DISPBASEX(channel));
+ 	/* Top/base are supposed to be 4-pixel aligned, but the
+ 	 * Raspberry Pi firmware fills the low bits (which are
+@@ -89,6 +90,7 @@ static bool vc4_crtc_get_scanout_positio
+ {
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state);
+ 	unsigned int cob_size;
+@@ -123,7 +125,7 @@ static bool vc4_crtc_get_scanout_positio
+ 		*vpos /= 2;
+ 
+ 		/* Use hpos to correct for field offset in interlaced mode. */
+-		if (vc4_hvs_get_fifo_frame_count(dev, vc4_crtc_state->assigned_channel) % 2)
++		if (vc4_hvs_get_fifo_frame_count(hvs, vc4_crtc_state->assigned_channel) % 2)
+ 			*hpos += mode->crtc_htotal / 2;
+ 	}
+ 
+@@ -449,6 +451,7 @@ static void vc4_crtc_config_pv(struct dr
+ static void require_hvs_enabled(struct drm_device *dev)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
+ 
+ 	WARN_ON_ONCE((HVS_READ(SCALER_DISPCTRL) & SCALER_DISPCTRL_ENABLE) !=
+ 		     SCALER_DISPCTRL_ENABLE);
+@@ -462,6 +465,7 @@ static int vc4_crtc_disable(struct drm_c
+ 	struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	struct drm_device *dev = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	int ret;
+ 
+ 	CRTC_WRITE(PV_V_CONTROL,
+@@ -491,7 +495,7 @@ static int vc4_crtc_disable(struct drm_c
+ 		vc4_encoder->post_crtc_disable(encoder, state);
+ 
+ 	vc4_crtc_pixelvalve_reset(crtc);
+-	vc4_hvs_stop_channel(dev, channel);
++	vc4_hvs_stop_channel(vc4->hvs, channel);
+ 
+ 	if (vc4_encoder && vc4_encoder->post_crtc_powerdown)
+ 		vc4_encoder->post_crtc_powerdown(encoder, state);
+@@ -517,6 +521,7 @@ static struct drm_encoder *vc4_crtc_get_
+ int vc4_crtc_disable_at_boot(struct drm_crtc *crtc)
+ {
+ 	struct drm_device *drm = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(drm);
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	enum vc4_encoder_type encoder_type;
+ 	const struct vc4_pv_data *pv_data;
+@@ -538,7 +543,7 @@ int vc4_crtc_disable_at_boot(struct drm_
+ 	if (!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN))
+ 		return 0;
+ 
+-	channel = vc4_hvs_get_fifo_from_output(drm, vc4_crtc->data->hvs_output);
++	channel = vc4_hvs_get_fifo_from_output(vc4->hvs, vc4_crtc->data->hvs_output);
+ 	if (channel < 0)
+ 		return 0;
+ 
+@@ -754,6 +759,7 @@ static void vc4_crtc_handle_page_flip(st
+ 	struct drm_crtc *crtc = &vc4_crtc->base;
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	u32 chan = vc4_crtc->current_hvs_channel;
+ 	unsigned long flags;
+ 
+@@ -772,7 +778,7 @@ static void vc4_crtc_handle_page_flip(st
+ 		 * the CRTC and encoder already reconfigured, leading to
+ 		 * underruns. This can be seen when reconfiguring the CRTC.
+ 		 */
+-		vc4_hvs_unmask_underrun(dev, chan);
++		vc4_hvs_unmask_underrun(hvs, chan);
+ 	}
+ 	spin_unlock(&vc4_crtc->irq_lock);
+ 	spin_unlock_irqrestore(&dev->event_lock, flags);
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -603,8 +603,8 @@ to_vc4_crtc_state(struct drm_crtc_state
+ 
+ #define V3D_READ(offset) readl(vc4->v3d->regs + offset)
+ #define V3D_WRITE(offset, val) writel(val, vc4->v3d->regs + offset)
+-#define HVS_READ(offset) readl(vc4->hvs->regs + offset)
+-#define HVS_WRITE(offset, val) writel(val, vc4->hvs->regs + offset)
++#define HVS_READ(offset) readl(hvs->regs + offset)
++#define HVS_WRITE(offset, val) writel(val, hvs->regs + offset)
+ 
+ #define VC4_REG32(reg) { .name = #reg, .offset = reg }
+ 
+@@ -965,17 +965,17 @@ void vc4_irq_reset(struct drm_device *de
+ 
+ /* vc4_hvs.c */
+ extern struct platform_driver vc4_hvs_driver;
+-void vc4_hvs_stop_channel(struct drm_device *dev, unsigned int output);
+-int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output);
+-u8 vc4_hvs_get_fifo_frame_count(struct drm_device *dev, unsigned int fifo);
++void vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int output);
++int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output);
++u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo);
+ int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_begin(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_disable(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_flush(struct drm_crtc *crtc, struct drm_atomic_state *state);
+-void vc4_hvs_dump_state(struct drm_device *dev);
+-void vc4_hvs_unmask_underrun(struct drm_device *dev, int channel);
+-void vc4_hvs_mask_underrun(struct drm_device *dev, int channel);
++void vc4_hvs_dump_state(struct vc4_hvs *hvs);
++void vc4_hvs_unmask_underrun(struct vc4_hvs *hvs, int channel);
++void vc4_hvs_mask_underrun(struct vc4_hvs *hvs, int channel);
+ 
+ /* vc4_kms.c */
+ int vc4_kms_load(struct drm_device *dev);
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -64,22 +64,21 @@ static const struct debugfs_reg32 hvs_re
+ 	VC4_REG32(SCALER_OLEDCOEF2),
+ };
+ 
+-void vc4_hvs_dump_state(struct drm_device *dev)
++void vc4_hvs_dump_state(struct vc4_hvs *hvs)
+ {
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+-	struct drm_printer p = drm_info_printer(&vc4->hvs->pdev->dev);
++	struct drm_printer p = drm_info_printer(&hvs->pdev->dev);
+ 	int i;
+ 
+-	drm_print_regset32(&p, &vc4->hvs->regset);
++	drm_print_regset32(&p, &hvs->regset);
+ 
+ 	DRM_INFO("HVS ctx:\n");
+ 	for (i = 0; i < 64; i += 4) {
+ 		DRM_INFO("0x%08x (%s): 0x%08x 0x%08x 0x%08x 0x%08x\n",
+ 			 i * 4, i < HVS_BOOTLOADER_DLIST_END ? "B" : "D",
+-			 readl((u32 __iomem *)vc4->hvs->dlist + i + 0),
+-			 readl((u32 __iomem *)vc4->hvs->dlist + i + 1),
+-			 readl((u32 __iomem *)vc4->hvs->dlist + i + 2),
+-			 readl((u32 __iomem *)vc4->hvs->dlist + i + 3));
++			 readl((u32 __iomem *)hvs->dlist + i + 0),
++			 readl((u32 __iomem *)hvs->dlist + i + 1),
++			 readl((u32 __iomem *)hvs->dlist + i + 2),
++			 readl((u32 __iomem *)hvs->dlist + i + 3));
+ 	}
+ }
+ 
+@@ -100,6 +99,7 @@ static int vc4_hvs_debugfs_dlist(struct
+ 	struct drm_info_node *node = m->private;
+ 	struct drm_device *dev = node->minor->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct drm_printer p = drm_seq_file_printer(m);
+ 	unsigned int next_entry_start = 0;
+ 	unsigned int i, j;
+@@ -139,6 +139,7 @@ static int vc5_hvs_debugfs_gamma(struct
+ 	struct drm_info_node *node = m->private;
+ 	struct drm_device *dev = node->minor->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct drm_printer p = drm_seq_file_printer(m);
+ 	unsigned int i, chan;
+ 	u32 dispstat, dispbkgndx;
+@@ -274,11 +275,10 @@ static int vc4_hvs_upload_linear_kernel(
+ 	return 0;
+ }
+ 
+-static void vc4_hvs_lut_load(struct drm_crtc *crtc)
++static void vc4_hvs_lut_load(struct vc4_hvs *hvs,
++			     struct vc4_crtc *vc4_crtc)
+ {
+-	struct drm_device *dev = crtc->dev;
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+-	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++	struct drm_crtc *crtc = &vc4_crtc->base;
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
+ 	u32 i;
+ 
+@@ -298,11 +298,12 @@ static void vc4_hvs_lut_load(struct drm_
+ 		HVS_WRITE(SCALER_GAMDATA, vc4_crtc->lut_b[i]);
+ }
+ 
+-static void vc4_hvs_update_gamma_lut(struct drm_crtc *crtc)
++static void vc4_hvs_update_gamma_lut(struct vc4_hvs *hvs,
++				     struct vc4_crtc *vc4_crtc)
+ {
+-	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+-	struct drm_color_lut *lut = crtc->state->gamma_lut->data;
+-	u32 length = drm_color_lut_size(crtc->state->gamma_lut);
++	struct drm_crtc_state *crtc_state = vc4_crtc->base.state;
++	struct drm_color_lut *lut = crtc_state->gamma_lut->data;
++	u32 length = drm_color_lut_size(crtc_state->gamma_lut);
+ 	u32 i;
+ 
+ 	for (i = 0; i < length; i++) {
+@@ -311,10 +312,10 @@ static void vc4_hvs_update_gamma_lut(str
+ 		vc4_crtc->lut_b[i] = drm_color_lut_extract(lut[i].blue, 8);
+ 	}
+ 
+-	vc4_hvs_lut_load(crtc);
++	vc4_hvs_lut_load(hvs, vc4_crtc);
+ }
+ 
+-static void vc5_hvs_write_gamma_entry(struct vc4_dev *vc4,
++static void vc5_hvs_write_gamma_entry(struct vc4_hvs *hvs,
+ 				      u32 offset,
+ 				      struct vc5_gamma_entry *gamma)
+ {
+@@ -322,33 +323,33 @@ static void vc5_hvs_write_gamma_entry(st
+ 	HVS_WRITE(offset + 4, gamma->grad_term);
+ }
+ 
+-static void vc5_hvs_lut_load(struct drm_crtc *crtc)
++static void vc5_hvs_lut_load(struct vc4_hvs *hvs,
++			     struct vc4_crtc *vc4_crtc)
+ {
+-	struct drm_device *dev = crtc->dev;
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+-	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+-	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
++	struct drm_crtc_state *crtc_state = vc4_crtc->base.state;
++	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state);
+ 	u32 i;
+ 	u32 offset = SCALER5_DSPGAMMA_START +
+ 		vc4_state->assigned_channel * SCALER5_DSPGAMMA_CHAN_OFFSET;
+ 
+ 	for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
+-		vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_r[i]);
++		vc5_hvs_write_gamma_entry(hvs, offset, &vc4_crtc->pwl_r[i]);
+ 	for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
+-		vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_g[i]);
++		vc5_hvs_write_gamma_entry(hvs, offset, &vc4_crtc->pwl_g[i]);
+ 	for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
+-		vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_b[i]);
++		vc5_hvs_write_gamma_entry(hvs, offset, &vc4_crtc->pwl_b[i]);
+ 
+ 	if (vc4_state->assigned_channel == 2) {
+ 		/* Alpha only valid on channel 2 */
+ 		for (i = 0; i < SCALER5_DSPGAMMA_NUM_POINTS; i++, offset += 8)
+-			vc5_hvs_write_gamma_entry(vc4, offset, &vc4_crtc->pwl_a[i]);
++			vc5_hvs_write_gamma_entry(hvs, offset, &vc4_crtc->pwl_a[i]);
+ 	}
+ }
+ 
+-static void vc5_hvs_update_gamma_lut(struct drm_crtc *crtc)
++static void vc5_hvs_update_gamma_lut(struct vc4_hvs *hvs,
++				     struct vc4_crtc *vc4_crtc)
+ {
+-	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++	struct drm_crtc *crtc = &vc4_crtc->base;
+ 	struct drm_color_lut *lut = crtc->state->gamma_lut->data;
+ 	unsigned int step, i;
+ 	u32 start, end;
+@@ -385,12 +386,11 @@ static void vc5_hvs_update_gamma_lut(str
+ 		VC5_HVS_UPDATE_GAMMA_ENTRY_FROM_LUT(pwl_b, blue);
+ 	}
+ 
+-	vc5_hvs_lut_load(crtc);
++	vc5_hvs_lut_load(hvs, vc4_crtc);
+ }
+ 
+-u8 vc4_hvs_get_fifo_frame_count(struct drm_device *dev, unsigned int fifo)
++u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo)
+ {
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	u8 field = 0;
+ 
+ 	switch (fifo) {
+@@ -411,13 +411,12 @@ u8 vc4_hvs_get_fifo_frame_count(struct d
+ 	return field;
+ }
+ 
+-int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output)
++int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output)
+ {
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	u32 reg;
+ 	int ret;
+ 
+-	if (!vc4->hvs->hvs5)
++	if (!hvs->hvs5)
+ 		return output;
+ 
+ 	switch (output) {
+@@ -464,9 +463,10 @@ int vc4_hvs_get_fifo_from_output(struct
+ 	}
+ }
+ 
+-static int vc4_hvs_init_channel(struct vc4_dev *vc4, struct drm_crtc *crtc,
++static int vc4_hvs_init_channel(struct vc4_hvs *hvs, struct drm_crtc *crtc,
+ 				struct drm_display_mode *mode, bool oneshot)
+ {
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state);
+ 	unsigned int chan = vc4_crtc_state->assigned_channel;
+ 	bool interlace = mode->flags & DRM_MODE_FLAG_INTERLACE;
+@@ -484,7 +484,7 @@ static int vc4_hvs_init_channel(struct v
+ 	 */
+ 	dispctrl = SCALER_DISPCTRLX_ENABLE;
+ 
+-	if (!vc4->hvs->hvs5)
++	if (!hvs->hvs5)
+ 		dispctrl |= VC4_SET_FIELD(mode->hdisplay,
+ 					  SCALER_DISPCTRLX_WIDTH) |
+ 			    VC4_SET_FIELD(mode->vdisplay,
+@@ -514,18 +514,16 @@ static int vc4_hvs_init_channel(struct v
+ 	/* Reload the LUT, since the SRAMs would have been disabled if
+ 	 * all CRTCs had SCALER_DISPBKGND_GAMMA unset at once.
+ 	 */
+-	if (!vc4->hvs->hvs5)
+-		vc4_hvs_lut_load(crtc);
++	if (!hvs->hvs5)
++		vc4_hvs_lut_load(hvs, vc4_crtc);
+ 	else
+-		vc5_hvs_lut_load(crtc);
++		vc5_hvs_lut_load(hvs, vc4_crtc);
+ 
+ 	return 0;
+ }
+ 
+-void vc4_hvs_stop_channel(struct drm_device *dev, unsigned int chan)
++void vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int chan)
+ {
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+-
+ 	if (HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_ENABLE)
+ 		return;
+ 
+@@ -623,6 +621,7 @@ static void vc4_hvs_install_dlist(struct
+ {
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
+ 
+ 	HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
+@@ -679,18 +678,19 @@ void vc4_hvs_atomic_enable(struct drm_cr
+ 
+ 	vc4_hvs_install_dlist(crtc);
+ 	vc4_hvs_update_dlist(crtc);
+-	vc4_hvs_init_channel(vc4, crtc, mode, oneshot);
++	vc4_hvs_init_channel(vc4->hvs, crtc, mode, oneshot);
+ }
+ 
+ void vc4_hvs_atomic_disable(struct drm_crtc *crtc,
+ 			    struct drm_atomic_state *state)
+ {
+ 	struct drm_device *dev = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_crtc_state *old_state = drm_atomic_get_old_crtc_state(state, crtc);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(old_state);
+ 	unsigned int chan = vc4_state->assigned_channel;
+ 
+-	vc4_hvs_stop_channel(dev, chan);
++	vc4_hvs_stop_channel(vc4->hvs, chan);
+ }
+ 
+ void vc4_hvs_atomic_flush(struct drm_crtc *crtc,
+@@ -700,6 +700,8 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 									 crtc);
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
++	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
+ 	unsigned int channel = vc4_state->assigned_channel;
+ 	struct drm_plane *plane;
+@@ -714,7 +716,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 
+ 	if (debug_dump_regs) {
+ 		DRM_INFO("CRTC %d HVS before:\n", drm_crtc_index(crtc));
+-		vc4_hvs_dump_state(dev);
++		vc4_hvs_dump_state(hvs);
+ 	}
+ 
+ 	/* Copy all the active planes' dlist contents to the hardware dlist. */
+@@ -766,10 +768,10 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 
+ 		if (crtc->state->gamma_lut) {
+ 			if (!vc4->hvs->hvs5) {
+-				vc4_hvs_update_gamma_lut(crtc);
++				vc4_hvs_update_gamma_lut(hvs, vc4_crtc);
+ 				dispbkgndx |= SCALER_DISPBKGND_GAMMA;
+ 			} else {
+-				vc5_hvs_update_gamma_lut(crtc);
++				vc5_hvs_update_gamma_lut(hvs, vc4_crtc);
+ 			}
+ 		} else {
+ 			/* Unsetting DISPBKGND_GAMMA skips the gamma lut step
+@@ -790,13 +792,12 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 
+ 	if (debug_dump_regs) {
+ 		DRM_INFO("CRTC %d HVS after:\n", drm_crtc_index(crtc));
+-		vc4_hvs_dump_state(dev);
++		vc4_hvs_dump_state(hvs);
+ 	}
+ }
+ 
+-void vc4_hvs_mask_underrun(struct drm_device *dev, int channel)
++void vc4_hvs_mask_underrun(struct vc4_hvs *hvs, int channel)
+ {
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	u32 dispctrl = HVS_READ(SCALER_DISPCTRL);
+ 
+ 	dispctrl &= ~SCALER_DISPCTRL_DSPEISLUR(channel);
+@@ -804,9 +805,8 @@ void vc4_hvs_mask_underrun(struct drm_de
+ 	HVS_WRITE(SCALER_DISPCTRL, dispctrl);
+ }
+ 
+-void vc4_hvs_unmask_underrun(struct drm_device *dev, int channel)
++void vc4_hvs_unmask_underrun(struct vc4_hvs *hvs, int channel)
+ {
+-	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	u32 dispctrl = HVS_READ(SCALER_DISPCTRL);
+ 
+ 	dispctrl |= SCALER_DISPCTRL_DSPEISLUR(channel);
+@@ -828,6 +828,7 @@ static irqreturn_t vc4_hvs_irq_handler(i
+ {
+ 	struct drm_device *dev = data;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	irqreturn_t irqret = IRQ_NONE;
+ 	int channel;
+ 	u32 control;
+@@ -840,7 +841,7 @@ static irqreturn_t vc4_hvs_irq_handler(i
+ 		/* Interrupt masking is not always honored, so check it here. */
+ 		if (status & SCALER_DISPSTAT_EUFLOW(channel) &&
+ 		    control & SCALER_DISPCTRL_DSPEISLUR(channel)) {
+-			vc4_hvs_mask_underrun(dev, channel);
++			vc4_hvs_mask_underrun(hvs, channel);
+ 			vc4_hvs_report_underrun(dev);
+ 
+ 			irqret = IRQ_HANDLED;
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -158,6 +158,7 @@ static u16 vc4_ctm_s31_32_to_s0_9(u64 in
+ static void
+ vc4_ctm_commit(struct vc4_dev *vc4, struct drm_atomic_state *state)
+ {
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct vc4_ctm_state *ctm_state = to_vc4_ctm_state(vc4->ctm_manager.state);
+ 	struct drm_color_ctm *ctm = ctm_state->ctm;
+ 
+@@ -234,6 +235,7 @@ vc4_hvs_get_global_state(struct drm_atom
+ static void vc4_hvs_pv_muxing_commit(struct vc4_dev *vc4,
+ 				     struct drm_atomic_state *state)
+ {
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct drm_crtc_state *crtc_state;
+ 	struct drm_crtc *crtc;
+ 	unsigned int i;
+@@ -274,6 +276,7 @@ static void vc4_hvs_pv_muxing_commit(str
+ static void vc5_hvs_pv_muxing_commit(struct vc4_dev *vc4,
+ 				     struct drm_atomic_state *state)
+ {
++	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct drm_crtc_state *crtc_state;
+ 	struct drm_crtc *crtc;
+ 	unsigned char mux;
+@@ -367,7 +370,7 @@ static void vc4_atomic_commit_tail(struc
+ 			continue;
+ 
+ 		vc4_crtc_state = to_vc4_crtc_state(new_crtc_state);
+-		vc4_hvs_mask_underrun(dev, vc4_crtc_state->assigned_channel);
++		vc4_hvs_mask_underrun(hvs, vc4_crtc_state->assigned_channel);
+ 	}
+ 
+ 	for (channel = 0; channel < HVS_NUM_CHANNELS; channel++) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0742-drm-vc4-hvs-Defer-dlist-slots-deallocation.patch b/target/linux/bcm27xx/patches-5.15/950-0742-drm-vc4-hvs-Defer-dlist-slots-deallocation.patch
new file mode 100644
index 0000000000..cec78b26e2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0742-drm-vc4-hvs-Defer-dlist-slots-deallocation.patch
@@ -0,0 +1,409 @@
+From a09f1129301f85dfb2f800c6dab2a5f8acac8f27 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 16 Dec 2021 14:54:54 +0100
+Subject: [PATCH] drm/vc4: hvs: Defer dlist slots deallocation
+
+During normal operations, the cursor position update is done through an
+asynchronous plane update, which on the vc4 driver basically just
+modifies the right dlist word to move the plane to the new coordinates.
+
+However, when we have the overscan margins setup, we fall back to a
+regular commit when we are next to the edges. And since that commit
+happens to be on a cursor plane, it's considered a legacy cursor update
+by KMS.
+
+The main difference it makes is that it won't wait for its completion
+(ie, next vblank) before returning. This means if we have multiple
+commits happening in rapid succession, we can have several of them
+happening before the next vblank.
+
+In parallel, our dlist allocation is tied to a CRTC state, and each time
+we do a commit we end up with a new CRTC state, with the previous one
+being freed. This means that we free our previous dlist entry (but don't
+clear it though) every time a new one is being committed.
+
+Now, if we were to have two commits happening before the next vblank, we
+could end up freeing reusing the same dlist entries before the next
+vblank.
+
+Indeed, we would start from an initial state taking, for example, the
+dlist entries 10 to 20, then start a commit taking the entries 20 to 30
+and setting the dlist pointer to 20, and freeing the dlist entries 10 to
+20. However, since we haven't reach vblank yet, the HVS is still using
+the entries 10 to 20.
+
+If we were to make a new commit now, chances are the allocator are going
+to give the 10 to 20 entries back, and we would change their content to
+match the new state. If vblank hasn't happened yet, we just corrupted
+the active dlist entries.
+
+A first attempt to solve this was made by creating an intermediate dlist
+buffer to store the current (ie, as of the last commit) dlist content,
+that we would update each time the HVS is done with a frame. However, if
+the interrupt handler missed the vblank window, we would end up copying
+our intermediate dlist to the hardware one during the composition,
+essentially creating the same issue.
+
+Since making sure that our interrupt handler runs within a fixed,
+constrained, time window would require to make Linux a real-time kernel,
+this seems a bit out of scope.
+
+Instead, we can work around our original issue by keeping the dlist
+slots allocation longer. That way, we won't reuse a dlist slot while
+it's still in flight. In order to achieve this, instead of freeing the
+dlist slot when its associated CRTC state is destroyed, we'll queue it
+in a list.
+
+A naive implementation would free the buffers in that queue when we get
+our end of frame interrupt. However, there's still a race since, just
+like in the shadow dlist case, we don't control when the handler for
+that interrupt is going to run. Thus, we can end up with a commit adding
+an old dlist allocation to our queue during the window between our
+actual interrupt and when our handler will run. And since that buffer is
+still being used for the composition of the current frame, we can't free
+it right away, exposing us to the original bug.
+
+Fortunately for us, the hardware provides a frame counter that is
+increased each time the first line of a frame is being generated.
+Associating the frame counter the image is supposed to go away to the
+allocation, and then only deallocate buffers that have a counter below
+or equal to the one we see when the deallocation code should prevent the
+above race from occuring.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c |  10 +-
+ drivers/gpu/drm/vc4/vc4_drv.h  |  15 ++-
+ drivers/gpu/drm/vc4/vc4_hvs.c  | 181 ++++++++++++++++++++++++++++++---
+ drivers/gpu/drm/vc4/vc4_regs.h |   1 +
+ 4 files changed, 184 insertions(+), 23 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -959,14 +959,8 @@ void vc4_crtc_destroy_state(struct drm_c
+ 	struct vc4_dev *vc4 = to_vc4_dev(crtc->dev);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(state);
+ 
+-	if (drm_mm_node_allocated(&vc4_state->mm)) {
+-		unsigned long flags;
+-
+-		spin_lock_irqsave(&vc4->hvs->mm_lock, flags);
+-		drm_mm_remove_node(&vc4_state->mm);
+-		spin_unlock_irqrestore(&vc4->hvs->mm_lock, flags);
+-
+-	}
++	vc4_hvs_mark_dlist_entry_stale(vc4->hvs, vc4_state->mm);
++	vc4_state->mm = NULL;
+ 
+ 	drm_atomic_helper_crtc_destroy_state(crtc, state);
+ }
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -335,6 +335,9 @@ struct vc4_hvs {
+ 	struct drm_mm lbm_mm;
+ 	spinlock_t mm_lock;
+ 
++	struct list_head stale_dlist_entries;
++	struct work_struct free_dlist_work;
++
+ 	struct drm_mm_node mitchell_netravali_filter;
+ 
+ 	struct debugfs_regset32 regset;
+@@ -573,10 +576,16 @@ struct drm_connector *vc4_get_crtc_conne
+ struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+ 					 struct drm_crtc_state *state);
+ 
++struct vc4_hvs_dlist_allocation {
++	struct list_head node;
++	struct drm_mm_node mm_node;
++	unsigned int channel;
++	u8 target_frame_count;
++};
++
+ struct vc4_crtc_state {
+ 	struct drm_crtc_state base;
+-	/* Dlist area for this CRTC configuration. */
+-	struct drm_mm_node mm;
++	struct vc4_hvs_dlist_allocation *mm;
+ 	bool txp_armed;
+ 	unsigned int assigned_channel;
+ 
+@@ -968,6 +977,8 @@ extern struct platform_driver vc4_hvs_dr
+ void vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int output);
+ int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output);
+ u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo);
++void vc4_hvs_mark_dlist_entry_stale(struct vc4_hvs *hvs,
++				    struct vc4_hvs_dlist_allocation *alloc);
+ int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_begin(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state);
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -389,6 +389,150 @@ static void vc5_hvs_update_gamma_lut(str
+ 	vc5_hvs_lut_load(hvs, vc4_crtc);
+ }
+ 
++static void vc4_hvs_irq_enable_eof(const struct vc4_hvs *hvs,
++				   unsigned int channel)
++{
++	u32 irq_mask = hvs->hvs5 ?
++		SCALER5_DISPCTRL_DSPEIEOF(channel) :
++		SCALER_DISPCTRL_DSPEIEOF(channel);
++
++	HVS_WRITE(SCALER_DISPCTRL,
++		  HVS_READ(SCALER_DISPCTRL) | irq_mask);
++}
++
++static void vc4_hvs_irq_clear_eof(const struct vc4_hvs *hvs,
++				  unsigned int channel)
++{
++	u32 irq_mask = hvs->hvs5 ?
++		SCALER5_DISPCTRL_DSPEIEOF(channel) :
++		SCALER_DISPCTRL_DSPEIEOF(channel);
++
++	HVS_WRITE(SCALER_DISPCTRL,
++		  HVS_READ(SCALER_DISPCTRL) & ~irq_mask);
++}
++
++static struct vc4_hvs_dlist_allocation *
++vc4_hvs_alloc_dlist_entry(struct vc4_hvs *hvs,
++			  unsigned int channel,
++			  size_t dlist_count)
++{
++	struct vc4_hvs_dlist_allocation *alloc;
++	unsigned long flags;
++	int ret;
++
++	if (channel == VC4_HVS_CHANNEL_DISABLED)
++		return NULL;
++
++	alloc = kzalloc(sizeof(*alloc), GFP_KERNEL);
++	if (!alloc)
++		return ERR_PTR(-ENOMEM);
++
++	spin_lock_irqsave(&hvs->mm_lock, flags);
++	ret = drm_mm_insert_node(&hvs->dlist_mm, &alloc->mm_node,
++				 dlist_count);
++	spin_unlock_irqrestore(&hvs->mm_lock, flags);
++	if (ret)
++		return ERR_PTR(ret);
++
++	alloc->channel = channel;
++
++	return alloc;
++}
++
++void vc4_hvs_mark_dlist_entry_stale(struct vc4_hvs *hvs,
++				    struct vc4_hvs_dlist_allocation *alloc)
++{
++	unsigned long flags;
++	u8 frcnt;
++
++	if (!alloc)
++		return;
++
++	if (!drm_mm_node_allocated(&alloc->mm_node))
++		return;
++
++	frcnt = vc4_hvs_get_fifo_frame_count(hvs, alloc->channel);
++	alloc->target_frame_count = (frcnt + 1) & ((1 << 6) - 1);
++
++	spin_lock_irqsave(&hvs->mm_lock, flags);
++
++	list_add_tail(&alloc->node, &hvs->stale_dlist_entries);
++
++	HVS_WRITE(SCALER_DISPSTAT, SCALER_DISPSTAT_EOF(alloc->channel));
++	vc4_hvs_irq_enable_eof(hvs, alloc->channel);
++
++	spin_unlock_irqrestore(&hvs->mm_lock, flags);
++}
++
++static void vc4_hvs_schedule_dlist_sweep(struct vc4_hvs *hvs,
++					 unsigned int channel)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&hvs->mm_lock, flags);
++
++	if (!list_empty(&hvs->stale_dlist_entries))
++		queue_work(system_unbound_wq, &hvs->free_dlist_work);
++
++	vc4_hvs_irq_clear_eof(hvs, channel);
++
++	spin_unlock_irqrestore(&hvs->mm_lock, flags);
++}
++
++/*
++ * Frame counts are essentially sequence numbers over 6 bits, and we
++ * thus can use sequence number arithmetic and follow the RFC1982 to
++ * implement proper comparison between them.
++ */
++static bool vc4_hvs_frcnt_lte(u8 cnt1, u8 cnt2)
++{
++	return (s8)((cnt1 << 2) - (cnt2 << 2)) <= 0;
++}
++
++/*
++ * Some atomic commits (legacy cursor updates, mostly) will not wait for
++ * the next vblank and will just return once the commit has been pushed
++ * to the hardware.
++ *
++ * On the hardware side, our HVS stores the planes parameters in its
++ * context RAM, and will use part of the RAM to store data during the
++ * frame rendering.
++ *
++ * This interacts badly if we get multiple commits before the next
++ * vblank since we could end up overwriting the DLIST entries used by
++ * previous commits if our dlist allocation reuses that entry. In such a
++ * case, we would overwrite the data currently being used by the
++ * hardware, resulting in a corrupted frame.
++ *
++ * In order to work around this, we'll queue the dlist entries in a list
++ * once the associated CRTC state is destroyed. The HVS only allows us
++ * to know which entry is being active, but not which one are no longer
++ * being used, so in order to avoid freeing entries that are still used
++ * by the hardware we add a guesstimate of the frame count where our
++ * entry will no longer be used, and thus will only free those entries
++ * when we will have reached that frame count.
++ */
++static void vc4_hvs_dlist_free_work(struct work_struct *work)
++{
++	struct vc4_hvs *hvs = container_of(work, struct vc4_hvs, free_dlist_work);
++	struct vc4_hvs_dlist_allocation *cur, *next;
++	unsigned long flags;
++
++	spin_lock_irqsave(&hvs->mm_lock, flags);
++	list_for_each_entry_safe(cur, next, &hvs->stale_dlist_entries, node) {
++		u8 frcnt;
++
++		frcnt = vc4_hvs_get_fifo_frame_count(hvs, cur->channel);
++		if (!vc4_hvs_frcnt_lte(cur->target_frame_count, frcnt))
++			continue;
++
++		list_del(&cur->node);
++		drm_mm_remove_node(&cur->mm_node);
++		kfree(cur);
++	}
++	spin_unlock_irqrestore(&hvs->mm_lock, flags);
++}
++
+ u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo)
+ {
+ 	u8 field = 0;
+@@ -588,13 +732,12 @@ int vc4_hvs_atomic_check(struct drm_crtc
+ {
+ 	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state);
++	struct vc4_hvs_dlist_allocation *alloc;
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_plane *plane;
+-	unsigned long flags;
+ 	const struct drm_plane_state *plane_state;
+ 	u32 dlist_count = 0;
+-	int ret;
+ 
+ 	/* The pixelvalve can only feed one encoder (and encoders are
+ 	 * 1:1 with connectors.)
+@@ -607,12 +750,11 @@ int vc4_hvs_atomic_check(struct drm_crtc
+ 
+ 	dlist_count++; /* Account for SCALER_CTL0_END. */
+ 
+-	spin_lock_irqsave(&vc4->hvs->mm_lock, flags);
+-	ret = drm_mm_insert_node(&vc4->hvs->dlist_mm, &vc4_state->mm,
+-				 dlist_count);
+-	spin_unlock_irqrestore(&vc4->hvs->mm_lock, flags);
+-	if (ret)
+-		return ret;
++	alloc = vc4_hvs_alloc_dlist_entry(vc4->hvs, vc4_state->assigned_channel, dlist_count);
++	if (IS_ERR(alloc))
++		return PTR_ERR(alloc);
++
++	vc4_state->mm = alloc;
+ 
+ 	return vc4_hvs_gamma_check(crtc, state);
+ }
+@@ -624,8 +766,9 @@ static void vc4_hvs_install_dlist(struct
+ 	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
+ 
++	WARN_ON(!vc4_state->mm);
+ 	HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
+-		  vc4_state->mm.start);
++		  vc4_state->mm->mm_node.start);
+ }
+ 
+ static void vc4_hvs_update_dlist(struct drm_crtc *crtc)
+@@ -650,8 +793,10 @@ static void vc4_hvs_update_dlist(struct
+ 		spin_unlock_irqrestore(&dev->event_lock, flags);
+ 	}
+ 
++	WARN_ON(!vc4_state->mm);
++
+ 	spin_lock_irqsave(&vc4_crtc->irq_lock, flags);
+-	vc4_crtc->current_dlist = vc4_state->mm.start;
++	vc4_crtc->current_dlist = vc4_state->mm->mm_node.start;
+ 	spin_unlock_irqrestore(&vc4_crtc->irq_lock, flags);
+ }
+ 
+@@ -708,8 +853,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	struct vc4_plane_state *vc4_plane_state;
+ 	bool debug_dump_regs = false;
+ 	bool enable_bg_fill = false;
+-	u32 __iomem *dlist_start = vc4->hvs->dlist + vc4_state->mm.start;
+-	u32 __iomem *dlist_next = dlist_start;
++	u32 __iomem *dlist_start, *dlist_next;
+ 
+ 	if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
+ 		return;
+@@ -719,6 +863,9 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 		vc4_hvs_dump_state(hvs);
+ 	}
+ 
++	dlist_start = vc4->hvs->dlist + vc4_state->mm->mm_node.start;
++	dlist_next = dlist_start;
++
+ 	/* Copy all the active planes' dlist contents to the hardware dlist. */
+ 	drm_atomic_crtc_for_each_plane(plane, crtc) {
+ 		/* Is this the first active plane? */
+@@ -741,7 +888,8 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	writel(SCALER_CTL0_END, dlist_next);
+ 	dlist_next++;
+ 
+-	WARN_ON_ONCE(dlist_next - dlist_start != vc4_state->mm.size);
++	WARN_ON(!vc4_state->mm);
++	WARN_ON_ONCE(dlist_next - dlist_start != vc4_state->mm->mm_node.size);
+ 
+ 	if (enable_bg_fill)
+ 		/* This sets a black background color fill, as is the case
+@@ -846,6 +994,11 @@ static irqreturn_t vc4_hvs_irq_handler(i
+ 
+ 			irqret = IRQ_HANDLED;
+ 		}
++
++		if (status & SCALER_DISPSTAT_EOF(channel)) {
++			vc4_hvs_schedule_dlist_sweep(hvs, channel);
++			irqret = IRQ_HANDLED;
++		}
+ 	}
+ 
+ 	/* Clear every per-channel interrupt flag. */
+@@ -902,6 +1055,8 @@ static int vc4_hvs_bind(struct device *d
+ 		hvs->dlist = hvs->regs + SCALER5_DLIST_START;
+ 
+ 	spin_lock_init(&hvs->mm_lock);
++	INIT_LIST_HEAD(&hvs->stale_dlist_entries);
++	INIT_WORK(&hvs->free_dlist_work, vc4_hvs_dlist_free_work);
+ 
+ 	/* Set up the HVS display list memory manager.  We never
+ 	 * overwrite the setup from the bootloader (just 128b out of
+--- a/drivers/gpu/drm/vc4/vc4_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_regs.h
+@@ -234,6 +234,7 @@
+ # define SCALER_DISPCTRL_DSPEIEOLN(x)		BIT(8 + ((x) * 2))
+ /* Enables Display 0 EOF contribution to SCALER_DISPSTAT_IRQDISP0 */
+ # define SCALER_DISPCTRL_DSPEIEOF(x)		BIT(7 + ((x) * 2))
++# define SCALER5_DISPCTRL_DSPEIEOF(x)		BIT(7 + ((x) * 4))
+ 
+ # define SCALER_DISPCTRL_SLVRDEIRQ		BIT(6)
+ # define SCALER_DISPCTRL_SLVWREIRQ		BIT(5)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0743-ARM-dts-Add-GPIO-line-names-for-downstream-RPis.patch b/target/linux/bcm27xx/patches-5.15/950-0743-ARM-dts-Add-GPIO-line-names-for-downstream-RPis.patch
new file mode 100644
index 0000000000..6177eca57a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0743-ARM-dts-Add-GPIO-line-names-for-downstream-RPis.patch
@@ -0,0 +1,974 @@
+From c4276e76a720c00d5115bc38d9834480552bcdbe Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Sun, 20 Feb 2022 16:27:11 +0000
+Subject: [PATCH] ARM: dts: Add GPIO line names for downstream RPis
+
+Largely copied from the upstream dts files, with a few additions and
+tweaks.
+
+See: https://github.com/raspberrypi/linux/issues/2760
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2708-rpi-b-plus.dts   | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts   | 67 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-b.dts        | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-cm.dts       | 65 ++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-zero-w.dts   | 67 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-zero.dts     | 65 ++++++++++++++++++
+ arch/arm/boot/dts/bcm2709-rpi-2-b.dts      | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-2-b.dts      | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts | 76 ++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-3-b.dts      | 76 ++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-cm3.dts      | 72 ++++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts | 67 +++++++++++++++++++
+ 12 files changed, 819 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from Raspberry-Pi-B-Plus-V1.2-Schematics.pdf
++	 * RPI-BPLUS sheet 1
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "SDA0",
++			  "SCL0",
++			  "NC", /* GPIO30 */
++			  "LAN_RUN", /* GPIO31 */
++			  "CAM_GPIO1", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "USB_LIMIT", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT", /* GPIO40 */
++			  "CAM_GPIO0", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "ETH_CLK", /* GPIO44 */
++			  "PWM1_OUT", /* GPIO45 */
++			  "HDMI_HPD_N",
++			  "STATUS_LED",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
+@@ -11,6 +11,73 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from Raspberry-Pi-Rev-1.0-Model-AB-Schematics.pdf
++	 * RPI00021 sheet 02
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "SDA0",
++			  "SCL0",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "CAM_GPIO1",
++			  "LAN_RUN",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "NC", /* GPIO12 */
++			  "NC", /* GPIO13 */
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "STATUS_LED_N",
++			  "GPIO17",
++			  "GPIO18",
++			  "NC", /* GPIO19 */
++			  "NC", /* GPIO20 */
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "NC", /* GPIO26 */
++			  "CAM_GPIO0",
++			  /* Binary number representing build/revision */
++			  "CONFIG0",
++			  "CONFIG1",
++			  "CONFIG2",
++			  "CONFIG3",
++			  "NC", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "NC", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "NC", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "PWM1_OUT",
++			  "HDMI_HPD_P",
++			  "SD_CARD_DET",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-b.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from Raspberry-Pi-Rev-2.0-Model-AB-Schematics.pdf
++	 * RPI00022 sheet 02
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "SDA0",
++			  "SCL0",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "CAM_GPIO1",
++			  "LAN_RUN",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "NC", /* GPIO12 */
++			  "NC", /* GPIO13 */
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "STATUS_LED_N",
++			  "GPIO17",
++			  "GPIO18",
++			  "NC", /* GPIO19 */
++			  "NC", /* GPIO20 */
++			  "CAM_GPIO0",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "NC", /* GPIO26 */
++			  "GPIO27",
++			  "GPIO28",
++			  "GPIO29",
++			  "GPIO30",
++			  "GPIO31",
++			  "NC", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "NC", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "NC", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "PWM1_OUT",
++			  "HDMI_HPD_P",
++			  "SD_CARD_DET",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
+@@ -24,6 +24,71 @@ cam0_reg: &cam0_regulator {
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "GPIO0",
++			  "GPIO1",
++			  "GPIO2",
++			  "GPIO3",
++			  "GPIO4",
++			  "GPIO5",
++			  "GPIO6",
++			  "GPIO7",
++			  "GPIO8",
++			  "GPIO9",
++			  "GPIO10",
++			  "GPIO11",
++			  "GPIO12",
++			  "GPIO13",
++			  "GPIO14",
++			  "GPIO15",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "GPIO28",
++			  "GPIO29",
++			  "GPIO30",
++			  "GPIO31",
++			  "GPIO32",
++			  "GPIO33",
++			  "GPIO34",
++			  "GPIO35",
++			  "GPIO36",
++			  "GPIO37",
++			  "GPIO38",
++			  "GPIO39",
++			  "GPIO40",
++			  "GPIO41",
++			  "GPIO42",
++			  "GPIO43",
++			  "GPIO44",
++			  "GPIO45",
++			  "HDMI_HPD_N",
++			  /* Also used as ACT LED */
++			  "EMMC_EN_N",
++			  /* Used by eMMC */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
+@@ -22,6 +22,73 @@
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "SDA0",
++			  "SCL0",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "CAM_GPIO1", /* GPIO40 */
++			  "WL_ON", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "WIFI_CLK", /* GPIO43 */
++			  "CAM_GPIO0", /* GPIO44 */
++			  "BT_ON", /* GPIO45 */
++			  "HDMI_HPD_N",
++			  "STATUS_LED_N",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-zero.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero.dts
+@@ -15,6 +15,71 @@
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "SDA0",
++			  "SCL0",
++			  "NC", /* GPIO30 */
++			  "NC", /* GPIO31 */
++			  "CAM_GPIO1", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "NC", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "NC", /* GPIO40 */
++			  "CAM_GPIO0", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "NC", /* GPIO45 */
++			  "HDMI_HPD_N",
++			  "STATUS_LED_N",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from rpi_SCH_2b_1p2_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "SDA0",
++			  "SCL0",
++			  "NC", /* GPIO30 */
++			  "LAN_RUN",
++			  "CAM_GPIO1",
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N",
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "USB_LIMIT",
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "CAM_GPIO0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  "ETH_CLK",
++			  "PWM1_OUT",
++			  "HDMI_HPD_N",
++			  "STATUS_LED",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from rpi_SCH_2b_1p2_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "SDA0",
++			  "SCL0",
++			  "NC", /* GPIO30 */
++			  "LAN_RUN",
++			  "CAM_GPIO1",
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N",
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "USB_LIMIT",
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "CAM_GPIO0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  "ETH_CLK",
++			  "PWM1_OUT",
++			  "HDMI_HPD_N",
++			  "STATUS_LED",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
+@@ -23,6 +23,74 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from rpi_SCH_3bplus_1p0_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "HDMI_HPD_N",
++			  "STATUS_LED_G",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "PWM0_OUT",
++			  "PWM1_OUT",
++			  "ETH_CLK",
++			  "WIFI_CLK",
++			  "SDA0",
++			  "SCL0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+@@ -97,6 +165,14 @@
+ 		compatible = "raspberrypi,firmware-gpio";
+ 		gpio-controller;
+ 		#gpio-cells = <2>;
++		gpio-line-names = "BT_ON",
++				  "WL_ON",
++				  "PWR_LED_R",
++				  "LAN_RUN",
++				  "NC",
++				  "CAM_GPIO0",
++				  "CAM_GPIO1",
++				  "NC";
+ 		status = "okay";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+@@ -23,6 +23,74 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from rpi_SCH_3b_1p2_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "NC", /* GPIO 28 */
++			  "LAN_RUN_BOOT",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "PWM0_OUT",
++			  "PWM1_OUT",
++			  "ETH_CLK",
++			  "WIFI_CLK",
++			  "SDA0",
++			  "SCL0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+@@ -108,6 +176,14 @@
+ 		compatible = "raspberrypi,firmware-gpio";
+ 		gpio-controller;
+ 		#gpio-cells = <2>;
++		gpio-line-names = "BT_ON",
++				  "WL_ON",
++				  "STATUS_LED",
++				  "LAN_RUN",
++				  "HDMI_HPD_N",
++				  "CAM_GPIO0",
++				  "CAM_GPIO1",
++				  "PWR_LOW_N";
+ 		status = "okay";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+@@ -24,6 +24,70 @@ cam0_reg: &cam0_regulator {
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "GPIO0",
++			  "GPIO1",
++			  "GPIO2",
++			  "GPIO3",
++			  "GPIO4",
++			  "GPIO5",
++			  "GPIO6",
++			  "GPIO7",
++			  "GPIO8",
++			  "GPIO9",
++			  "GPIO10",
++			  "GPIO11",
++			  "GPIO12",
++			  "GPIO13",
++			  "GPIO14",
++			  "GPIO15",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "GPIO28",
++			  "GPIO29",
++			  "GPIO30",
++			  "GPIO31",
++			  "GPIO32",
++			  "GPIO33",
++			  "GPIO34",
++			  "GPIO35",
++			  "GPIO36",
++			  "GPIO37",
++			  "GPIO38",
++			  "GPIO39",
++			  "GPIO40",
++			  "GPIO41",
++			  "GPIO42",
++			  "GPIO43",
++			  "GPIO44",
++			  "GPIO45",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  /* Used by eMMC */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+@@ -71,6 +135,14 @@ cam0_reg: &cam0_regulator {
+ 		compatible = "raspberrypi,firmware-gpio";
+ 		gpio-controller;
+ 		#gpio-cells = <2>;
++		gpio-line-names = "HDMI_HPD_N",
++				  "EMMC_EN_N",
++				  "NC",
++				  "NC",
++				  "NC",
++				  "NC",
++				  "NC",
++				  "NC";
+ 		status = "okay";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+@@ -22,6 +22,73 @@
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "HDMI_HPD_N",
++			  "STATUS_LED_N",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "CAM_GPIO1", /* GPIO40 */
++			  "WL_ON", /* GPIO41 */
++			  "BT_ON", /* GPIO42 */
++			  "WIFI_CLK", /* GPIO43 */
++			  "SDA0", /* GPIO44 */
++			  "SCL0", /* GPIO45 */
++			  "SMPS_SCL", /* GPIO46 */
++			  "SMPS_SDA", /* GPIO47 */
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0744-overlays-fixes-probing-of-Hifiberry-DAC2-HD.patch b/target/linux/bcm27xx/patches-5.15/950-0744-overlays-fixes-probing-of-Hifiberry-DAC2-HD.patch
new file mode 100644
index 0000000000..0d79868c63
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0744-overlays-fixes-probing-of-Hifiberry-DAC2-HD.patch
@@ -0,0 +1,65 @@
+From 26637f1e9fad7dd14501088c1cac1b5e5c611dbb Mon Sep 17 00:00:00 2001
+From: Joerg Schambacher <joerg@hifiberry.com>
+Date: Wed, 23 Feb 2022 12:08:42 +0100
+Subject: [PATCH] overlays:fixes probing of Hifiberry DAC2 HD
+
+Removed clocks-declarations in I2C sections of the DT-overlay
+which kept the devices from probing.
+
+Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
+---
+ .../dts/overlays/hifiberry-dacplushd-overlay.dts | 16 ++--------------
+ 1 file changed, 2 insertions(+), 14 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/hifiberry-dacplushd-overlay.dts
++++ b/arch/arm/boot/dts/overlays/hifiberry-dacplushd-overlay.dts
+@@ -8,23 +8,13 @@
+ 	compatible = "brcm,bcm2835";
+ 
+ 	fragment@0 {
+-		target-path = "/";
+-		__overlay__ {
+-			dachd_osc: pll_dachd_osc {
+-				compatible = "hifiberry,dachd-clk";
+-				#clock-cells = <0>;
+-			};
+-		};
+-	};
+-
+-	fragment@1 {
+ 		target = <&i2s>;
+ 		__overlay__ {
+ 			status = "okay";
+ 		};
+ 	};
+ 
+-	fragment@2 {
++	fragment@1 {
+ 		target = <&i2c1>;
+ 		__overlay__ {
+ 			#address-cells = <1>;
+@@ -35,7 +25,6 @@
+ 				compatible = "ti,pcm1792a";
+ 				#sound-dai-cells = <0>;
+ 				#clock-cells = <0>;
+-				clocks = <&dachd_osc>;
+ 				reg = <0x4c>;
+ 				status = "okay";
+ 			};
+@@ -43,7 +32,6 @@
+ 				compatible = "hifiberry,dachd-clk";
+ 				#clock-cells = <0>;
+ 				reg = <0x62>;
+-				clocks = <&dachd_osc>;
+ 				status = "okay";
+ 				common_pll_regs = [
+ 					02 53 03 00 07 20 0F 00
+@@ -92,7 +80,7 @@
+ 		};
+ 	};
+ 
+-	fragment@3 {
++	fragment@2 {
+ 		target = <&sound>;
+ 		__overlay__ {
+ 			compatible = "hifiberry,hifiberry-dacplushd";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0745-overlays-Overlays-for-WaveShare-2-Chan-CAN-FD-HAT.patch b/target/linux/bcm27xx/patches-5.15/950-0745-overlays-Overlays-for-WaveShare-2-Chan-CAN-FD-HAT.patch
new file mode 100644
index 0000000000..4697be295e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0745-overlays-Overlays-for-WaveShare-2-Chan-CAN-FD-HAT.patch
@@ -0,0 +1,321 @@
+From dadc749c5ccc320127871d7c3ace51a7fae479a7 Mon Sep 17 00:00:00 2001
+From: nmbath <mark@baggywrinkle.co.uk>
+Date: Thu, 24 Feb 2022 13:10:01 +0000
+Subject: [PATCH] overlays: Overlays for WaveShare 2-Chan CAN FD HAT
+
+This patch adds the overlays for the Waveshare 2-Channel Isolated
+CAN FD Expansion HAT for Raspberry Pi, Multi Protections. This HAT
+is based on the mcp2518fd chip and can be run in two modes
+
+Mode A: can0 on spi0.0 and can1 on spi1.0 (cs = pin 26)
+Mode B: can1 on spi0.0 and can1 in spi0.1
+
+Interupts: can0 pin 25 / can1 pin 16
+
+https://www.waveshare.com/2-ch-can-fd-hat.htm
+
+Overlays generated by:
+Mode A: ovmerge -c spi1-1cs-overlay.dts,cs0_pin=26,cs0_spidev=false \
+              mcp251xfd-overlay.dts,spi0-0,interrupt=25 \
+              mcp251xfd-overlay.dts,spi1-0,interrupt=16
+
+Mode B: ovmerge -c mcp251xfd-overlay.dts,spi0-0,interrupt=25 \
+              mcp251xfd-overlay.dts,spi0-1,interrupt=16
+---
+ arch/arm/boot/dts/overlays/Makefile           |   2 +
+ arch/arm/boot/dts/overlays/README             |  20 +++
+ .../waveshare-can-fd-hat-mode-a-overlay.dts   | 140 ++++++++++++++++++
+ .../waveshare-can-fd-hat-mode-b-overlay.dts   | 103 +++++++++++++
+ 4 files changed, 265 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/waveshare-can-fd-hat-mode-a-overlay.dts
+ create mode 100644 arch/arm/boot/dts/overlays/waveshare-can-fd-hat-mode-b-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -251,6 +251,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	w1-gpio.dtbo \
+ 	w1-gpio-pullup.dtbo \
+ 	w5500.dtbo \
++	waveshare-can-fd-hat-mode-a.dtbo \
++	waveshare-can-fd-hat-mode-b.dtbo \
+ 	wittypi.dtbo \
+ 	wm8960-soundcard.dtbo
+ 
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -3879,6 +3879,26 @@ Params: int_pin                 GPIO use
+         cs                      SPI bus Chip Select (default 0)
+ 
+ 
++Name:   waveshare-can-fd-hat-mode-a
++Info:   Overlay for the Waveshare 2-Channel Isolated CAN FD Expansion HAT
++        for Raspberry Pi, Multi Protections. Use this overlay when the
++        HAT is configured in Mode A (Default), with can0 on spi0.0
++        and can1 on spi1.0.
++        https://www.waveshare.com/2-ch-can-fd-hat.htm
++Load:   dtoverlay=waveshare-can-fd-hat-mode-a
++Params: <None>
++
++
++Name:   waveshare-can-fd-hat-mode-b
++Info:   Overlay for the Waveshare 2-Channel Isolated CAN FD Expansion HAT
++        for Raspberry Pi, Multi Protections. Use this overlay when the
++        HAT is configured in Mode B (requires hardware modification), with
++        can0 on spi0.0 and can1 on spi0.1.
++        https://www.waveshare.com/2-ch-can-fd-hat.htm
++Load:   dtoverlay=waveshare-can-fd-hat-mode-b
++Params: <None>
++
++
+ Name:   wittypi
+ Info:   Configures the wittypi RTC module.
+ Load:   dtoverlay=wittypi,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/waveshare-can-fd-hat-mode-a-overlay.dts
+@@ -0,0 +1,140 @@
++// redo: ovmerge -c spi1-1cs-overlay.dts,cs0_pin=26,cs0_spidev=false mcp251xfd-overlay.dts,spi0-0,interrupt=25 mcp251xfd-overlay.dts,spi1-0,interrupt=16
++
++// Device tree overlay for https://www.waveshare.com/2-ch-can-fd-hat.htm
++// in "Mode A" (default) configuration
++// for details see https://www.waveshare.com/wiki/2-CH_CAN_FD_HAT
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi1_pins: spi1_pins {
++				brcm,pins = <19 20 21>;
++				brcm,function = <3>;
++			};
++			spi1_cs_pins: spi1_cs_pins {
++				brcm,pins = <26>;
++				brcm,function = <1>;
++			};
++		};
++	};
++	fragment@1 {
++		target = <&spi1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
++			cs-gpios = <&gpio 26 1>;
++			status = "okay";
++			spidev@0 {
++				compatible = "spidev";
++				reg = <0>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "disabled";
++			};
++		};
++	};
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@3 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@4 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins: mcp251xfd_spi0_0_pins {
++				brcm,pins = <25>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@5 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc: mcp251xfd-spi0-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@6 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc>;
++			};
++		};
++	};
++	fragment@7 {
++		target-path = "spi1/spidev@0";
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@8 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins_1: mcp251xfd_spi1_0_pins {
++				brcm,pins = <16>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@9 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc_1: mcp251xfd-spi1-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@10 {
++		target = <&spi1>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins_1>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc_1>;
++			};
++		};
++	};
++};
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/waveshare-can-fd-hat-mode-b-overlay.dts
+@@ -0,0 +1,103 @@
++// redo: ovmerge -c mcp251xfd-overlay.dts,spi0-0,interrupt=25 mcp251xfd-overlay.dts,spi0-1,interrupt=16
++
++// Device tree overlay for https://www.waveshare.com/2-ch-can-fd-hat.htm
++// in "Mode B" (requried hardware modification) configuration
++// for details see https://www.waveshare.com/wiki/2-CH_CAN_FD_HAT
++
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++	fragment@0 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@1 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins: mcp251xfd_spi0_0_pins {
++				brcm,pins = <25>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@2 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc: mcp251xfd-spi0-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@3 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc>;
++			};
++		};
++	};
++	fragment@4 {
++		target = <&spidev1>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@5 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins_1: mcp251xfd_spi0_1_pins {
++				brcm,pins = <16>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@6 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc_1: mcp251xfd-spi0-1-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@7 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@1 {
++				compatible = "microchip,mcp251xfd";
++				reg = <1>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins_1>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc_1>;
++			};
++		};
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0746-overlays-Add-drm-parameter-to-pitft35-resistive.patch b/target/linux/bcm27xx/patches-5.15/950-0746-overlays-Add-drm-parameter-to-pitft35-resistive.patch
new file mode 100644
index 0000000000..52f776d70e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0746-overlays-Add-drm-parameter-to-pitft35-resistive.patch
@@ -0,0 +1,38 @@
+From a6747d9fad7d15345f7703e9f9d2916ea20a6edf Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 25 Feb 2022 09:53:56 +0000
+Subject: [PATCH] overlays: Add "drm" parameter to pitft35-resistive
+
+The "drm" parameter forces the use of the hx8357d DRM driver, when by
+default the fb_hx8357d framebuffer driver will be used in preference.
+
+See: https://forums.raspberrypi.com/viewtopic.php?t=330088
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README                        | 4 ++++
+ arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts | 1 +
+ 2 files changed, 5 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2689,6 +2689,10 @@ Params: speed                   Display
+ 
+         debug                   Debug output level {0-7}
+ 
++        drm                     Force the use of the hx8357d DRM driver (by
++                                default the fb_hx8357d framebuffer driver will
++                                be used in preference if available)
++
+ 
+ Name:   pps-gpio
+ Info:   Configures the pps-gpio (pulse-per-second time signal via GPIO).
+--- a/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
+@@ -115,5 +115,6 @@
+ 		rotate =  <&pitft>,"rotate:0";
+ 		fps =     <&pitft>,"fps:0";
+ 		debug =   <&pitft>,"debug:0";
++		drm =     <&pitft>,"compatible=adafruit,yx350hv15";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0747-usb-xhci-rework-XHCI_VLI_SS_BULK_OUT_BUG-quirk.patch b/target/linux/bcm27xx/patches-5.15/950-0747-usb-xhci-rework-XHCI_VLI_SS_BULK_OUT_BUG-quirk.patch
new file mode 100644
index 0000000000..273a769ff9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0747-usb-xhci-rework-XHCI_VLI_SS_BULK_OUT_BUG-quirk.patch
@@ -0,0 +1,51 @@
+From 2b76a32609d4621151beb78354ae945df37e2a1d Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Tue, 1 Mar 2022 15:12:15 +0000
+Subject: [PATCH] usb: xhci: rework XHCI_VLI_SS_BULK_OUT_BUG quirk
+
+Fix incorrectly applying the quirk for bulk IN endpoints and remove the
+commentary which is not completely accurate based on observed behaviour.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/usb/host/xhci-ring.c | 15 +++++----------
+ 1 file changed, 5 insertions(+), 10 deletions(-)
+
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -3608,7 +3608,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *
+ 	unsigned int num_trbs;
+ 	unsigned int start_cycle, num_sgs = 0;
+ 	unsigned int enqd_len, block_len, trb_buff_len, full_len;
+-	int sent_len, ret, vli_quirk = 0;
++	int sent_len, ret, vli_bulk_quirk = 0;
+ 	u32 field, length_field, remainder, maxpacket;
+ 	u64 addr, send_addr;
+ 
+@@ -3654,14 +3654,9 @@ int xhci_queue_bulk_tx(struct xhci_hcd *
+ 	send_addr = addr;
+ 
+ 	if (xhci->quirks & XHCI_VLI_SS_BULK_OUT_BUG &&
+-	    !usb_urb_dir_in(urb) && urb->dev->speed >= USB_SPEED_SUPER) {
+-		/*
+-		 * VL805 - superspeed bulk OUT traffic can cause
+-		 * an internal fifo overflow if the TRB buffer is larger
+-		 * than wMaxPacket and the length is not an integer
+-		 * multiple of wMaxPacket.
+-		 */
+-		vli_quirk = 1;
++	    usb_endpoint_is_bulk_out(&urb->ep->desc)
++	    && urb->dev->speed >= USB_SPEED_SUPER) {
++		vli_bulk_quirk = 1;
+ 	}
+ 
+ 	/* Queue the TRBs, even if they are zero-length */
+@@ -3676,7 +3671,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *
+ 		if (enqd_len + trb_buff_len > full_len)
+ 			trb_buff_len = full_len - enqd_len;
+ 
+-		if (vli_quirk && trb_buff_len > maxpacket) {
++		if (vli_bulk_quirk && trb_buff_len > maxpacket) {
+ 			/* SS bulk wMaxPacket is 1024B */
+ 			remainder = trb_buff_len & (maxpacket - 1);
+ 			trb_buff_len -= remainder;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0748-media-i2c-Add-driver-for-Omnivision-OV2311.patch b/target/linux/bcm27xx/patches-5.15/950-0748-media-i2c-Add-driver-for-Omnivision-OV2311.patch
new file mode 100644
index 0000000000..63646f3e16
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0748-media-i2c-Add-driver-for-Omnivision-OV2311.patch
@@ -0,0 +1,1230 @@
+From a327bf2a6c7a4d9d1025f4fc6b350e0d7385f753 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 25 Feb 2022 18:16:13 +0000
+Subject: [PATCH] media/i2c: Add driver for Omnivision OV2311
+
+Omnivision OV2311 is a CSI2 1600x1300 global shutter image sensor.
+Add a driver for it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/Kconfig  |   11 +
+ drivers/media/i2c/Makefile |    1 +
+ drivers/media/i2c/ov2311.c | 1181 ++++++++++++++++++++++++++++++++++++
+ 3 files changed, 1193 insertions(+)
+ create mode 100644 drivers/media/i2c/ov2311.c
+
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -918,6 +918,17 @@ config VIDEO_OV02A10
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called ov02a10.
+ 
++config VIDEO_OV2311
++	tristate "OmniVision OV2311 sensor support"
++	depends on I2C && VIDEO_V4L2
++	depends on MEDIA_CAMERA_SUPPORT
++	help
++	  This is a Video4Linux2 sensor-level driver for the OmniVision
++	  OV2311 camera.
++
++	  To compile this driver as a module, choose M here: the
++	  module will be called ov2311.
++
+ config VIDEO_OV2640
+ 	tristate "OmniVision OV2640 sensor support"
+ 	depends on VIDEO_V4L2 && I2C
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -65,6 +65,7 @@ obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony
+ obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
+ obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
+ obj-$(CONFIG_VIDEO_OV02A10) += ov02a10.o
++obj-$(CONFIG_VIDEO_OV2311) += ov2311.o
+ obj-$(CONFIG_VIDEO_OV2640) += ov2640.o
+ obj-$(CONFIG_VIDEO_OV2680) += ov2680.o
+ obj-$(CONFIG_VIDEO_OV2685) += ov2685.o
+--- /dev/null
++++ b/drivers/media/i2c/ov2311.c
+@@ -0,0 +1,1181 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Omnivision OV2311 1600x1300 global shutter image sensor driver
++ * Copyright (C) 2022, Raspberry Pi (Trading) Ltd
++ *
++ * This driver is based on the OV9281 driver.
++ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
++ * Register configuration from
++ * https://github.com/ArduCAM/ArduCAM_USB_Camera_Shield/tree/master/Config/USB3.0_UC-425_Rev.C%2BUC-628_Rev.B/OV2311
++ * with additional exposure and gain register information from
++ * https://github.com/renesas-rcar/linux-bsp/tree/0cf6e36f5bf49e1c2aab87139ec5b588623c56f8/drivers/media/i2c/imagers
++ */
++
++#include <linux/clk.h>
++#include <linux/device.h>
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/i2c.h>
++#include <linux/module.h>
++#include <linux/pm_runtime.h>
++#include <linux/regulator/consumer.h>
++#include <media/media-entity.h>
++#include <media/v4l2-async.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-fwnode.h>
++#include <media/v4l2-subdev.h>
++
++#define OV2311_LINK_FREQ		400000000
++#define OV2311_LANES			2
++
++/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
++#define OV2311_PIXEL_RATE_10BIT		(OV2311_LINK_FREQ * 2 * \
++					 OV2311_LANES / 10)
++#define OV2311_PIXEL_RATE_8BIT		(OV2311_LINK_FREQ * 2 * \
++					 OV2311_LANES / 8)
++#define OV2311_XVCLK_FREQ		24000000
++
++#define CHIP_ID				0x2311
++#define OV2311_REG_CHIP_ID		0x300a
++
++#define OV2311_REG_CTRL_MODE		0x0100
++#define OV2311_MODE_SW_STANDBY		0x0
++#define OV2311_MODE_STREAMING		BIT(0)
++
++#define OV2311_REG_V_FLIP		0x3820
++#define OV2311_REG_H_FLIP		0x3821
++#define OV2311_FLIP_BIT			BIT(2)
++
++#define OV2311_REG_EXPOSURE		0x3501
++#define	OV2311_EXPOSURE_MIN		4
++#define	OV2311_EXPOSURE_STEP		1
++#define OV2311_VTS_MAX			0xffff
++
++#define OV2311_REG_GAIN_H		0x3508
++#define OV2311_REG_GAIN_L		0x3509
++#define OV2311_GAIN_H_MASK		0x07
++#define OV2311_GAIN_H_SHIFT		8
++#define OV2311_GAIN_L_MASK		0xff
++#define OV2311_GAIN_MIN			0x100
++#define OV2311_GAIN_MAX			0x780
++#define OV2311_GAIN_STEP		1
++#define OV2311_GAIN_DEFAULT		OV2311_GAIN_MIN
++
++#define OV2311_REG_TEST_PATTERN		0x5e00
++#define OV2311_TEST_PATTERN_ENABLE	0x80
++#define OV2311_TEST_PATTERN_DISABLE	0x0
++
++#define OV2311_REG_VTS			0x380e
++
++/*
++ * OV2311 native and active pixel array size.
++ * Datasheet not available to confirm these values. renesas-rcar linux-bsp tree
++ * has these values.
++ */
++#define OV2311_NATIVE_WIDTH		1616U
++#define OV2311_NATIVE_HEIGHT		1316U
++#define OV2311_PIXEL_ARRAY_LEFT		8U
++#define OV2311_PIXEL_ARRAY_TOP		8U
++#define OV2311_PIXEL_ARRAY_WIDTH	1600U
++#define OV2311_PIXEL_ARRAY_HEIGHT	1300U
++
++#define REG_NULL			0xFFFF
++
++#define OV2311_REG_VALUE_08BIT		1
++#define OV2311_REG_VALUE_16BIT		2
++#define OV2311_REG_VALUE_24BIT		3
++
++#define OV2311_NAME			"ov2311"
++
++static const char * const ov2311_supply_names[] = {
++	"avdd",		/* Analog power */
++	"dovdd",	/* Digital I/O power */
++	"dvdd",		/* Digital core power */
++};
++
++#define OV2311_NUM_SUPPLIES ARRAY_SIZE(ov2311_supply_names)
++
++struct regval {
++	u16 addr;
++	u8 val;
++};
++
++struct ov2311_mode {
++	u32 width;
++	u32 height;
++	u32 hts_def;
++	u32 vts_def;
++	u32 exp_def;
++	struct v4l2_rect crop;
++	const struct regval *reg_list;
++};
++
++struct ov2311 {
++	struct i2c_client	*client;
++	struct clk		*xvclk;
++	struct gpio_desc	*reset_gpio;
++	struct gpio_desc	*pwdn_gpio;
++	struct regulator_bulk_data supplies[OV2311_NUM_SUPPLIES];
++
++	struct v4l2_subdev	subdev;
++	struct media_pad	pad;
++	struct v4l2_ctrl_handler ctrl_handler;
++	struct v4l2_ctrl	*exposure;
++	struct v4l2_ctrl	*hblank;
++	struct v4l2_ctrl	*vblank;
++	struct v4l2_ctrl	*pixel_rate;
++	/*
++	 * Mutex for serialized access:
++	 * Protect sensor module set pad format and start/stop streaming safely.
++	 */
++	struct mutex		mutex;
++
++	/* Streaming on/off */
++	bool streaming;
++
++	const struct ov2311_mode *cur_mode;
++	u32			code;
++};
++
++#define to_ov2311(sd) container_of(sd, struct ov2311, subdev)
++
++/*
++ * Xclk 24Mhz
++ * max_framerate 60fps for 10 bit, 74.6fps for 8 bit.
++ */
++static const struct regval ov2311_common_regs[] = {
++	{ 0x0103, 0x01 },
++	{ 0x0100, 0x00 },
++	{ 0x0300, 0x01 },
++	{ 0x0302, 0x32 },
++	{ 0x0303, 0x00 },
++	{ 0x0304, 0x03 },
++	{ 0x0305, 0x02 },
++	{ 0x0306, 0x01 },
++	{ 0x030e, 0x04 },
++	{ 0x3001, 0x02 },
++	{ 0x3004, 0x00 },
++	{ 0x3005, 0x00 },
++	{ 0x3006, 0x00 },
++	{ 0x3011, 0x0d },
++	{ 0x3014, 0x04 },
++	{ 0x301c, 0xf0 },
++	{ 0x3020, 0x00 },
++	{ 0x302c, 0x00 },
++	{ 0x302d, 0x12 },
++	{ 0x302e, 0x4c },
++	{ 0x302f, 0x8c },
++	{ 0x3030, 0x10 },
++	{ 0x303f, 0x03 },
++	{ 0x3103, 0x00 },
++	{ 0x3106, 0x08 },
++	{ 0x31ff, 0x01 },
++	{ 0x3501, 0x05 },
++	{ 0x3502, 0xba },
++	{ 0x3506, 0x00 },
++	{ 0x3507, 0x00 },
++	{ 0x3620, 0x67 },
++	{ 0x3633, 0x78 },
++	{ 0x3666, 0x00 },
++	{ 0x3670, 0x68 },
++	{ 0x3674, 0x10 },
++	{ 0x3675, 0x00 },
++	{ 0x3680, 0x84 },
++	{ 0x36a2, 0x04 },
++	{ 0x36a3, 0x80 },
++	{ 0x36b0, 0x00 },
++	{ 0x3700, 0x35 },
++	{ 0x3704, 0x59 },
++	{ 0x3712, 0x00 },
++	{ 0x3713, 0x02 },
++	{ 0x379b, 0x01 },
++	{ 0x379c, 0x10 },
++	{ 0x3800, 0x00 },
++	{ 0x3801, 0x00 },
++	{ 0x3804, 0x06 },
++	{ 0x3805, 0x4f },
++	{ 0x3810, 0x00 },
++	{ 0x3811, 0x08 },
++	{ 0x3812, 0x00 },
++	{ 0x3813, 0x08 },
++	{ 0x3814, 0x11 },
++	{ 0x3815, 0x11 },
++	{ 0x3816, 0x00 },
++	{ 0x3817, 0x00 },
++	{ 0x3818, 0x04 },
++	{ 0x3819, 0x00 },
++	{ 0x382b, 0x5a },
++	{ 0x382c, 0x09 },
++	{ 0x382d, 0x9a },
++	{ 0x3882, 0x02 },
++	{ 0x3883, 0x6c },
++	{ 0x3885, 0x07 },
++	{ 0x389d, 0x03 },
++	{ 0x38a6, 0x00 },
++	{ 0x38a7, 0x01 },
++	{ 0x38b3, 0x07 },
++	{ 0x38b1, 0x00 },
++	{ 0x38e5, 0x02 },
++	{ 0x38e7, 0x00 },
++	{ 0x38e8, 0x00 },
++	{ 0x3910, 0xff },
++	{ 0x3911, 0xff },
++	{ 0x3912, 0x08 },
++	{ 0x3913, 0x00 },
++	{ 0x3914, 0x00 },
++	{ 0x3915, 0x00 },
++	{ 0x391c, 0x00 },
++	{ 0x3920, 0xa5 },
++	{ 0x3921, 0x00 },
++	{ 0x3922, 0x00 },
++	{ 0x3923, 0x00 },
++	{ 0x3924, 0x05 },
++	{ 0x3925, 0x00 },
++	{ 0x3926, 0x00 },
++	{ 0x3927, 0x00 },
++	{ 0x3928, 0x1a },
++	{ 0x392d, 0x05 },
++	{ 0x392e, 0xf2 },
++	{ 0x392f, 0x40 },
++	{ 0x4001, 0x00 },
++	{ 0x4003, 0x40 },
++	{ 0x4008, 0x12 },
++	{ 0x4009, 0x1b },
++	{ 0x400c, 0x0c },
++	{ 0x400d, 0x13 },
++	{ 0x4010, 0xf0 },
++	{ 0x4011, 0x00 },
++	{ 0x4016, 0x00 },
++	{ 0x4017, 0x04 },
++	{ 0x4042, 0x11 },
++	{ 0x4043, 0x70 },
++	{ 0x4045, 0x00 },
++	{ 0x4409, 0x5f },
++	{ 0x450b, 0x00 },
++	{ 0x4600, 0x00 },
++	{ 0x4601, 0xa0 },
++	{ 0x4708, 0x09 },
++	{ 0x470c, 0x81 },
++	{ 0x4710, 0x06 },
++	{ 0x4711, 0x00 },
++	{ 0x4800, 0x00 },
++	{ 0x481f, 0x30 },
++	{ 0x4837, 0x14 },
++	{ 0x4f00, 0x00 },
++	{ 0x4f07, 0x00 },
++	{ 0x4f08, 0x03 },
++	{ 0x4f09, 0x08 },
++	{ 0x4f0c, 0x06 },
++	{ 0x4f0d, 0x02 },
++	{ 0x4f10, 0x00 },
++	{ 0x4f11, 0x00 },
++	{ 0x4f12, 0x07 },
++	{ 0x4f13, 0xe2 },
++	{ 0x5000, 0x9f },
++	{ 0x5001, 0x20 },
++	{ 0x5026, 0x00 },
++	{ 0x5c00, 0x00 },
++	{ 0x5c01, 0x2c },
++	{ 0x5c02, 0x00 },
++	{ 0x5c03, 0x7f },
++	{ 0x5e00, 0x00 },
++	{ 0x5e01, 0x41 },
++	{REG_NULL, 0x00},
++};
++
++static const struct regval ov2311_1600x1300_regs[] = {
++	{ 0x3802, 0x00 },
++	{ 0x3803, 0x00 },
++	{ 0x3806, 0x05 },
++	{ 0x3807, 0x23 },
++	{ 0x3808, 0x06 },
++	{ 0x3809, 0x40 },
++	{ 0x380a, 0x05 },
++	{ 0x380b, 0x14 },
++	{ 0x380c, 0x03 },
++	{ 0x380d, 0x88 },
++	{REG_NULL, 0x00},
++};
++
++static const struct regval ov2311_1600x1080_regs[] = {
++	{ 0x3802, 0x00 },
++	{ 0x3803, 0x6e },
++	{ 0x3806, 0x04 },
++	{ 0x3807, 0xae },
++	{ 0x3808, 0x06 },
++	{ 0x3809, 0x40 },
++	{ 0x380a, 0x04 },
++	{ 0x380b, 0x38 },
++	{ 0x380c, 0x03 },
++	{ 0x380d, 0x88 },
++
++	{ 0x5d01, 0x00 },
++	{ 0x5d02, 0x04 },
++	{ 0x5d03, 0x00 },
++	{ 0x5d04, 0x04 },
++	{ 0x5d05, 0x00 },
++	{REG_NULL, 0x00},
++};
++
++static const struct regval op_10bit[] = {
++	{ 0x030d, 0x5a },
++	{ 0x3662, 0x65 },
++	{REG_NULL, 0x00},
++};
++
++static const struct regval op_8bit[] = {
++	{ 0x030d, 0x70 },
++	{ 0x3662, 0x67 },
++	{REG_NULL, 0x00},
++};
++
++static const struct ov2311_mode supported_modes[] = {
++	{
++		.width = 1600,
++		.height = 1300,
++		.exp_def = 0x0320,
++		.hts_def = (0x0388 * 2),/* Registers 0x380c / 0x380d  * 2 */
++		.vts_def = 0x5c2,	/* Registers 0x380e / 0x380f
++					 * 60fps for 10bpp
++					 */
++		.crop = {
++			.left = OV2311_PIXEL_ARRAY_LEFT,
++			.top = OV2311_PIXEL_ARRAY_TOP,
++			.width = 1600,
++			.height = 1300
++		},
++		.reg_list = ov2311_1600x1300_regs,
++	},
++	{
++		.width = 1600,
++		.height = 1080,
++		.exp_def = 0x0320,
++		.hts_def = (0x0388 * 2),/* Registers 0x380c / 0x380d  * 2 */
++		.vts_def = 0x5c2,	/* Registers 0x380e / 0x380f
++					 * 60fps for 10bpp
++					 */
++		.crop = {
++			.left = OV2311_PIXEL_ARRAY_LEFT,
++			.top = 110 + OV2311_PIXEL_ARRAY_TOP,
++			.width = 1600,
++			.height = 1080
++		},
++		.reg_list = ov2311_1600x1080_regs,
++	},
++};
++
++static const s64 link_freq_menu_items[] = {
++	OV2311_LINK_FREQ
++};
++
++static const char * const ov2311_test_pattern_menu[] = {
++	"Disabled",
++	"Vertical Color Bar Type 1",
++	"Vertical Color Bar Type 2",
++	"Vertical Color Bar Type 3",
++	"Vertical Color Bar Type 4"
++};
++
++/* Write registers up to 4 at a time */
++static int ov2311_write_reg(struct i2c_client *client, u16 reg,
++			    u32 len, u32 val)
++{
++	u32 buf_i, val_i;
++	u8 buf[6];
++	u8 *val_p;
++	__be32 val_be;
++
++	if (len > 4)
++		return -EINVAL;
++
++	buf[0] = reg >> 8;
++	buf[1] = reg & 0xff;
++
++	val_be = cpu_to_be32(val);
++	val_p = (u8 *)&val_be;
++	buf_i = 2;
++	val_i = 4 - len;
++
++	while (val_i < 4)
++		buf[buf_i++] = val_p[val_i++];
++
++	if (i2c_master_send(client, buf, len + 2) != len + 2)
++		return -EIO;
++
++	return 0;
++}
++
++static int ov2311_write_array(struct i2c_client *client,
++			      const struct regval *regs)
++{
++	u32 i;
++	int ret = 0;
++
++	for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++)
++		ret = ov2311_write_reg(client, regs[i].addr,
++				       OV2311_REG_VALUE_08BIT, regs[i].val);
++
++	return ret;
++}
++
++/* Read registers up to 4 at a time */
++static int ov2311_read_reg(struct i2c_client *client, u16 reg, unsigned int len,
++			   u32 *val)
++{
++	struct i2c_msg msgs[2];
++	u8 *data_be_p;
++	__be32 data_be = 0;
++	__be16 reg_addr_be = cpu_to_be16(reg);
++	int ret;
++
++	if (len > 4 || !len)
++		return -EINVAL;
++
++	data_be_p = (u8 *)&data_be;
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = 2;
++	msgs[0].buf = (u8 *)&reg_addr_be;
++
++	/* Read data from register */
++	msgs[1].addr = client->addr;
++	msgs[1].flags = I2C_M_RD;
++	msgs[1].len = len;
++	msgs[1].buf = &data_be_p[4 - len];
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	*val = be32_to_cpu(data_be);
++
++	return 0;
++}
++
++static int ov2311_set_fmt(struct v4l2_subdev *sd,
++			  struct v4l2_subdev_state *sd_state,
++			  struct v4l2_subdev_format *fmt)
++{
++	struct ov2311 *ov2311 = to_ov2311(sd);
++	const struct ov2311_mode *mode;
++	s64 h_blank, vblank_def, pixel_rate;
++
++	mutex_lock(&ov2311->mutex);
++
++	mode = v4l2_find_nearest_size(supported_modes,
++				      ARRAY_SIZE(supported_modes),
++				      width, height,
++				      fmt->format.width,
++				      fmt->format.height);
++	if (fmt->format.code != MEDIA_BUS_FMT_Y8_1X8)
++		fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
++	fmt->format.width = mode->width;
++	fmt->format.height = mode->height;
++	fmt->format.field = V4L2_FIELD_NONE;
++	fmt->format.colorspace = V4L2_COLORSPACE_RAW;
++	fmt->format.ycbcr_enc =
++			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
++	fmt->format.quantization =
++		V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->format.colorspace,
++					      fmt->format.ycbcr_enc);
++	fmt->format.xfer_func =
++		V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
++
++	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++		*v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) =
++								fmt->format;
++	} else {
++		ov2311->cur_mode = mode;
++		ov2311->code = fmt->format.code;
++		h_blank = mode->hts_def - mode->width;
++		__v4l2_ctrl_modify_range(ov2311->hblank, h_blank,
++					 h_blank, 1, h_blank);
++		__v4l2_ctrl_s_ctrl(ov2311->hblank, h_blank);
++		vblank_def = mode->vts_def - mode->height;
++		__v4l2_ctrl_modify_range(ov2311->vblank, vblank_def,
++					 OV2311_VTS_MAX - mode->height,
++					 1, vblank_def);
++		__v4l2_ctrl_s_ctrl(ov2311->vblank, vblank_def);
++
++		pixel_rate = (fmt->format.code == MEDIA_BUS_FMT_Y10_1X10) ?
++			OV2311_PIXEL_RATE_10BIT : OV2311_PIXEL_RATE_8BIT;
++		__v4l2_ctrl_modify_range(ov2311->pixel_rate, pixel_rate,
++					 pixel_rate, 1, pixel_rate);
++	}
++
++	mutex_unlock(&ov2311->mutex);
++
++	return 0;
++}
++
++static int ov2311_get_fmt(struct v4l2_subdev *sd,
++			  struct v4l2_subdev_state *sd_state,
++			  struct v4l2_subdev_format *fmt)
++{
++	struct ov2311 *ov2311 = to_ov2311(sd);
++	const struct ov2311_mode *mode = ov2311->cur_mode;
++
++	mutex_lock(&ov2311->mutex);
++	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
++		fmt->format = *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
++	} else {
++		fmt->format.width = mode->width;
++		fmt->format.height = mode->height;
++		fmt->format.code = ov2311->code;
++		fmt->format.field = V4L2_FIELD_NONE;
++		fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
++		fmt->format.ycbcr_enc =
++			V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
++		fmt->format.quantization =
++			V4L2_MAP_QUANTIZATION_DEFAULT(true,
++						      fmt->format.colorspace,
++						      fmt->format.ycbcr_enc);
++		fmt->format.xfer_func =
++			V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
++	}
++	mutex_unlock(&ov2311->mutex);
++
++	return 0;
++}
++
++static int ov2311_enum_mbus_code(struct v4l2_subdev *sd,
++				 struct v4l2_subdev_state *sd_state,
++				 struct v4l2_subdev_mbus_code_enum *code)
++{
++	switch (code->index) {
++	default:
++		return -EINVAL;
++	case 0:
++		code->code = MEDIA_BUS_FMT_Y10_1X10;
++		break;
++	case 1:
++		code->code = MEDIA_BUS_FMT_Y8_1X8;
++		break;
++	}
++
++	return 0;
++}
++
++static int ov2311_enum_frame_sizes(struct v4l2_subdev *sd,
++				   struct v4l2_subdev_state *sd_state,
++				   struct v4l2_subdev_frame_size_enum *fse)
++{
++	if (fse->index >= ARRAY_SIZE(supported_modes))
++		return -EINVAL;
++
++	if (fse->code != MEDIA_BUS_FMT_Y10_1X10 &&
++	    fse->code != MEDIA_BUS_FMT_Y8_1X8)
++		return -EINVAL;
++
++	fse->min_width  = supported_modes[fse->index].width;
++	fse->max_width  = supported_modes[fse->index].width;
++	fse->max_height = supported_modes[fse->index].height;
++	fse->min_height = supported_modes[fse->index].height;
++
++	return 0;
++}
++
++static int ov2311_enable_test_pattern(struct ov2311 *ov2311, u32 pattern)
++{
++	u32 val;
++
++	if (pattern)
++		val = (pattern - 1) | OV2311_TEST_PATTERN_ENABLE;
++	else
++		val = OV2311_TEST_PATTERN_DISABLE;
++
++	return ov2311_write_reg(ov2311->client, OV2311_REG_TEST_PATTERN,
++				OV2311_REG_VALUE_08BIT, val);
++}
++
++static const struct v4l2_rect *
++__ov2311_get_pad_crop(struct ov2311 *ov2311, struct v4l2_subdev_state *sd_state,
++		      unsigned int pad, enum v4l2_subdev_format_whence which)
++{
++	switch (which) {
++	case V4L2_SUBDEV_FORMAT_TRY:
++		return v4l2_subdev_get_try_crop(&ov2311->subdev, sd_state, pad);
++	case V4L2_SUBDEV_FORMAT_ACTIVE:
++		return &ov2311->cur_mode->crop;
++	}
++
++	return NULL;
++}
++
++static int ov2311_get_selection(struct v4l2_subdev *sd,
++				struct v4l2_subdev_state *sd_state,
++				struct v4l2_subdev_selection *sel)
++{
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP: {
++		struct ov2311 *ov2311 = to_ov2311(sd);
++
++		mutex_lock(&ov2311->mutex);
++		sel->r = *__ov2311_get_pad_crop(ov2311, sd_state, sel->pad,
++						sel->which);
++		mutex_unlock(&ov2311->mutex);
++
++		return 0;
++	}
++
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++		sel->r.top = 0;
++		sel->r.left = 0;
++		sel->r.width = OV2311_NATIVE_WIDTH;
++		sel->r.height = OV2311_NATIVE_HEIGHT;
++
++		return 0;
++
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		sel->r.top = OV2311_PIXEL_ARRAY_TOP;
++		sel->r.left = OV2311_PIXEL_ARRAY_LEFT;
++		sel->r.width = OV2311_PIXEL_ARRAY_WIDTH;
++		sel->r.height = OV2311_PIXEL_ARRAY_HEIGHT;
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++static int ov2311_start_stream(struct ov2311 *ov2311)
++{
++	int ret;
++
++	ret = ov2311_write_array(ov2311->client, ov2311_common_regs);
++	if (ret)
++		return ret;
++
++	ret = ov2311_write_array(ov2311->client, ov2311->cur_mode->reg_list);
++	if (ret)
++		return ret;
++
++	if (ov2311->code == MEDIA_BUS_FMT_Y10_1X10)
++		ret = ov2311_write_array(ov2311->client, op_10bit);
++	else
++		ret = ov2311_write_array(ov2311->client, op_8bit);
++	if (ret)
++		return ret;
++
++	/* In case these controls are set before streaming */
++	mutex_unlock(&ov2311->mutex);
++	ret = v4l2_ctrl_handler_setup(&ov2311->ctrl_handler);
++	mutex_lock(&ov2311->mutex);
++	if (ret)
++		return ret;
++
++	return ov2311_write_reg(ov2311->client, OV2311_REG_CTRL_MODE,
++				OV2311_REG_VALUE_08BIT, OV2311_MODE_STREAMING);
++}
++
++static int ov2311_stop_stream(struct ov2311 *ov2311)
++{
++	return ov2311_write_reg(ov2311->client, OV2311_REG_CTRL_MODE,
++				OV2311_REG_VALUE_08BIT, OV2311_MODE_SW_STANDBY);
++}
++
++static int ov2311_s_stream(struct v4l2_subdev *sd, int enable)
++{
++	struct ov2311 *ov2311 = to_ov2311(sd);
++	struct i2c_client *client = ov2311->client;
++	int ret = 0;
++
++	mutex_lock(&ov2311->mutex);
++	if (ov2311->streaming == enable) {
++		mutex_unlock(&ov2311->mutex);
++		return 0;
++	}
++
++	if (enable) {
++		ret = pm_runtime_resume_and_get(&client->dev);
++		if (ret < 0)
++			goto unlock_and_return;
++
++		ret = ov2311_start_stream(ov2311);
++		if (ret) {
++			v4l2_err(sd, "start stream failed while write regs\n");
++			pm_runtime_put(&client->dev);
++			goto unlock_and_return;
++		}
++	} else {
++		ov2311_stop_stream(ov2311);
++		pm_runtime_put(&client->dev);
++	}
++
++	ov2311->streaming = enable;
++
++unlock_and_return:
++	mutex_unlock(&ov2311->mutex);
++
++	return ret;
++}
++
++static int ov2311_power_on(struct device *dev)
++{
++	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct ov2311 *ov2311 = to_ov2311(sd);
++	int ret;
++
++	ret = clk_set_rate(ov2311->xvclk, OV2311_XVCLK_FREQ);
++	if (ret < 0)
++		dev_warn(dev, "Failed to set xvclk rate (24MHz)\n");
++	if (clk_get_rate(ov2311->xvclk) != OV2311_XVCLK_FREQ)
++		dev_warn(dev, "xvclk mismatched, modes are based on 24MHz - rate is %lu\n",
++			 clk_get_rate(ov2311->xvclk));
++
++	ret = clk_prepare_enable(ov2311->xvclk);
++	if (ret < 0) {
++		dev_err(dev, "Failed to enable xvclk\n");
++		return ret;
++	}
++
++	gpiod_set_value_cansleep(ov2311->reset_gpio, 0);
++
++	ret = regulator_bulk_enable(OV2311_NUM_SUPPLIES, ov2311->supplies);
++	if (ret < 0) {
++		dev_err(dev, "Failed to enable regulators\n");
++		goto disable_clk;
++	}
++
++	gpiod_set_value_cansleep(ov2311->reset_gpio, 1);
++
++	usleep_range(500, 1000);
++	gpiod_set_value_cansleep(ov2311->pwdn_gpio, 1);
++
++	usleep_range(1000, 2000);
++
++	return 0;
++
++disable_clk:
++	clk_disable_unprepare(ov2311->xvclk);
++
++	return ret;
++}
++
++static int ov2311_power_off(struct device *dev)
++{
++	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct ov2311 *ov2311 = to_ov2311(sd);
++
++	gpiod_set_value_cansleep(ov2311->pwdn_gpio, 0);
++	clk_disable_unprepare(ov2311->xvclk);
++	gpiod_set_value_cansleep(ov2311->reset_gpio, 0);
++	regulator_bulk_disable(OV2311_NUM_SUPPLIES, ov2311->supplies);
++
++	return 0;
++}
++
++static int ov2311_runtime_resume(struct device *dev)
++{
++	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct ov2311 *ov2311 = to_ov2311(sd);
++	int ret;
++
++	if (ov2311->streaming) {
++		ret = ov2311_start_stream(ov2311);
++		if (ret)
++			goto error;
++	}
++	return 0;
++
++error:
++	ov2311_stop_stream(ov2311);
++	ov2311->streaming = 0;
++	return ret;
++}
++
++static int ov2311_runtime_suspend(struct device *dev)
++{
++	struct v4l2_subdev *sd = dev_get_drvdata(dev);
++	struct ov2311 *ov2311 = to_ov2311(sd);
++
++	if (ov2311->streaming)
++		ov2311_stop_stream(ov2311);
++
++	return 0;
++}
++
++static int ov2311_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct ov2311 *ov2311 = to_ov2311(sd);
++	struct v4l2_mbus_framefmt *try_fmt =
++				v4l2_subdev_get_try_format(sd, fh->state, 0);
++	const struct ov2311_mode *def_mode = &supported_modes[0];
++
++	mutex_lock(&ov2311->mutex);
++	/* Initialize try_fmt */
++	try_fmt->width = def_mode->width;
++	try_fmt->height = def_mode->height;
++	try_fmt->code = MEDIA_BUS_FMT_Y10_1X10;
++	try_fmt->field = V4L2_FIELD_NONE;
++	try_fmt->colorspace = V4L2_COLORSPACE_RAW;
++	try_fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(try_fmt->colorspace);
++	try_fmt->quantization =
++		V4L2_MAP_QUANTIZATION_DEFAULT(true, try_fmt->colorspace,
++					      try_fmt->ycbcr_enc);
++	try_fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(try_fmt->colorspace);
++
++	mutex_unlock(&ov2311->mutex);
++	/* No crop or compose */
++
++	return 0;
++}
++
++static const struct dev_pm_ops ov2311_pm_ops = {
++	SET_RUNTIME_PM_OPS(ov2311_runtime_suspend, ov2311_runtime_resume, NULL)
++	SET_RUNTIME_PM_OPS(ov2311_power_off, ov2311_power_on, NULL)
++};
++
++static const struct v4l2_subdev_internal_ops ov2311_internal_ops = {
++	.open = ov2311_open,
++};
++
++static const struct v4l2_subdev_core_ops ov2311_core_ops = {
++	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
++	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
++};
++
++static const struct v4l2_subdev_video_ops ov2311_video_ops = {
++	.s_stream = ov2311_s_stream,
++};
++
++static const struct v4l2_subdev_pad_ops ov2311_pad_ops = {
++	.enum_mbus_code = ov2311_enum_mbus_code,
++	.enum_frame_size = ov2311_enum_frame_sizes,
++	.get_fmt = ov2311_get_fmt,
++	.set_fmt = ov2311_set_fmt,
++	.get_selection = ov2311_get_selection,
++};
++
++static const struct v4l2_subdev_ops ov2311_subdev_ops = {
++	.core	= &ov2311_core_ops,
++	.video	= &ov2311_video_ops,
++	.pad	= &ov2311_pad_ops,
++};
++
++static int ov2311_set_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct ov2311 *ov2311 = container_of(ctrl->handler,
++					     struct ov2311, ctrl_handler);
++	struct i2c_client *client = ov2311->client;
++	s64 max;
++	int ret = 0;
++
++	/* Propagate change of current control to all related controls */
++	switch (ctrl->id) {
++	case V4L2_CID_VBLANK:
++		/* Update max exposure while meeting expected vblanking */
++		max = ov2311->cur_mode->height + ctrl->val - 4;
++		__v4l2_ctrl_modify_range(ov2311->exposure,
++					 ov2311->exposure->minimum, max,
++					 ov2311->exposure->step,
++					 ov2311->exposure->default_value);
++		break;
++	}
++
++	if (pm_runtime_get(&client->dev) <= 0)
++		return 0;
++
++	switch (ctrl->id) {
++	case V4L2_CID_EXPOSURE:
++		ret = ov2311_write_reg(ov2311->client, OV2311_REG_EXPOSURE,
++				       OV2311_REG_VALUE_16BIT, ctrl->val);
++		break;
++	case V4L2_CID_ANALOGUE_GAIN:
++		ret = ov2311_write_reg(ov2311->client, OV2311_REG_GAIN_H,
++				       OV2311_REG_VALUE_08BIT,
++				       (ctrl->val >> OV2311_GAIN_H_SHIFT) &
++							OV2311_GAIN_H_MASK);
++		ret |= ov2311_write_reg(ov2311->client, OV2311_REG_GAIN_L,
++				       OV2311_REG_VALUE_08BIT,
++				       ctrl->val & OV2311_GAIN_L_MASK);
++		break;
++	case V4L2_CID_VBLANK:
++		ret = ov2311_write_reg(ov2311->client, OV2311_REG_VTS,
++				       OV2311_REG_VALUE_16BIT,
++				       ctrl->val + ov2311->cur_mode->height);
++		break;
++	case V4L2_CID_TEST_PATTERN:
++		ret = ov2311_enable_test_pattern(ov2311, ctrl->val);
++		break;
++	case V4L2_CID_HFLIP:
++		ret = ov2311_write_reg(ov2311->client, OV2311_REG_H_FLIP,
++				       OV2311_REG_VALUE_08BIT,
++				       ctrl->val ? OV2311_FLIP_BIT : 0);
++		break;
++	case V4L2_CID_VFLIP:
++		ret = ov2311_write_reg(ov2311->client, OV2311_REG_V_FLIP,
++				       OV2311_REG_VALUE_08BIT,
++				       ctrl->val ? OV2311_FLIP_BIT : 0);
++		break;
++	default:
++		dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
++			 __func__, ctrl->id, ctrl->val);
++		break;
++	}
++
++	pm_runtime_put(&client->dev);
++
++	return ret;
++}
++
++static const struct v4l2_ctrl_ops ov2311_ctrl_ops = {
++	.s_ctrl = ov2311_set_ctrl,
++};
++
++static int ov2311_initialize_controls(struct ov2311 *ov2311)
++{
++	struct v4l2_fwnode_device_properties props;
++	const struct ov2311_mode *mode;
++	struct v4l2_ctrl_handler *handler;
++	struct v4l2_ctrl *ctrl;
++	s64 exposure_max, vblank_def;
++	u32 h_blank;
++	int ret;
++
++	handler = &ov2311->ctrl_handler;
++	mode = ov2311->cur_mode;
++	ret = v4l2_ctrl_handler_init(handler, 11);
++	if (ret)
++		return ret;
++	handler->lock = &ov2311->mutex;
++
++	ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
++				      0, 0, link_freq_menu_items);
++	if (ctrl)
++		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++
++	ov2311->pixel_rate = v4l2_ctrl_new_std(handler, NULL,
++					       V4L2_CID_PIXEL_RATE,
++					       OV2311_PIXEL_RATE_10BIT,
++					       OV2311_PIXEL_RATE_10BIT, 1,
++					       OV2311_PIXEL_RATE_10BIT);
++
++	h_blank = mode->hts_def - mode->width;
++	ov2311->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
++					   h_blank, h_blank, 1, h_blank);
++	if (ov2311->hblank)
++		ov2311->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++
++	vblank_def = mode->vts_def - mode->height;
++	ov2311->vblank = v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
++					   V4L2_CID_VBLANK, vblank_def,
++					   OV2311_VTS_MAX - mode->height, 1,
++					   vblank_def);
++
++	exposure_max = mode->vts_def - 4;
++	ov2311->exposure = v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
++					     V4L2_CID_EXPOSURE,
++					     OV2311_EXPOSURE_MIN, exposure_max,
++					     OV2311_EXPOSURE_STEP,
++					     mode->exp_def);
++
++	v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
++			  OV2311_GAIN_MIN, OV2311_GAIN_MAX, OV2311_GAIN_STEP,
++			  OV2311_GAIN_DEFAULT);
++
++	v4l2_ctrl_new_std_menu_items(handler, &ov2311_ctrl_ops,
++				     V4L2_CID_TEST_PATTERN,
++				     ARRAY_SIZE(ov2311_test_pattern_menu) - 1,
++				     0, 0, ov2311_test_pattern_menu);
++
++	v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
++			  V4L2_CID_HFLIP, 0, 1, 1, 0);
++
++	v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
++			  V4L2_CID_VFLIP, 0, 1, 1, 0);
++
++	ret = v4l2_fwnode_device_parse(&ov2311->client->dev, &props);
++	if (ret)
++		goto err_free_handler;
++
++	ret = v4l2_ctrl_new_fwnode_properties(handler, &ov2311_ctrl_ops,
++					      &props);
++	if (ret)
++		goto err_free_handler;
++
++	if (handler->error) {
++		ret = handler->error;
++		dev_err(&ov2311->client->dev,
++			"Failed to init controls(%d)\n", ret);
++		goto err_free_handler;
++	}
++
++	ov2311->subdev.ctrl_handler = handler;
++
++	return 0;
++
++err_free_handler:
++	v4l2_ctrl_handler_free(handler);
++
++	return ret;
++}
++
++static int ov2311_check_sensor_id(struct ov2311 *ov2311,
++				  struct i2c_client *client)
++{
++	struct device *dev = &ov2311->client->dev;
++	u32 id = 0, id_msb;
++	int ret;
++
++	ret = ov2311_read_reg(client, OV2311_REG_CHIP_ID + 1,
++			      OV2311_REG_VALUE_08BIT, &id);
++	if (!ret)
++		ret = ov2311_read_reg(client, OV2311_REG_CHIP_ID,
++				      OV2311_REG_VALUE_08BIT, &id_msb);
++	id |= (id_msb << 8);
++	if (ret || id != CHIP_ID) {
++		dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", id, ret);
++		return -ENODEV;
++	}
++
++	dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID);
++
++	return 0;
++}
++
++static int ov2311_configure_regulators(struct ov2311 *ov2311)
++{
++	unsigned int i;
++
++	for (i = 0; i < OV2311_NUM_SUPPLIES; i++)
++		ov2311->supplies[i].supply = ov2311_supply_names[i];
++
++	return devm_regulator_bulk_get(&ov2311->client->dev,
++				       OV2311_NUM_SUPPLIES,
++				       ov2311->supplies);
++}
++
++static int ov2311_probe(struct i2c_client *client,
++			const struct i2c_device_id *id)
++{
++	struct device *dev = &client->dev;
++	struct ov2311 *ov2311;
++	struct v4l2_subdev *sd;
++	int ret;
++
++	ov2311 = devm_kzalloc(dev, sizeof(*ov2311), GFP_KERNEL);
++	if (!ov2311)
++		return -ENOMEM;
++
++	ov2311->client = client;
++	ov2311->cur_mode = &supported_modes[0];
++
++	ov2311->xvclk = devm_clk_get(dev, "xvclk");
++	if (IS_ERR(ov2311->xvclk)) {
++		dev_err(dev, "Failed to get xvclk\n");
++		return -EINVAL;
++	}
++
++	ov2311->reset_gpio = devm_gpiod_get_optional(dev, "reset",
++						     GPIOD_OUT_LOW);
++	if (IS_ERR(ov2311->reset_gpio))
++		dev_warn(dev, "Failed to get reset-gpios\n");
++
++	ov2311->pwdn_gpio = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_LOW);
++	if (IS_ERR(ov2311->pwdn_gpio))
++		dev_warn(dev, "Failed to get pwdn-gpios\n");
++
++	ret = ov2311_configure_regulators(ov2311);
++	if (ret) {
++		dev_err(dev, "Failed to get power regulators\n");
++		return ret;
++	}
++
++	mutex_init(&ov2311->mutex);
++
++	sd = &ov2311->subdev;
++	v4l2_i2c_subdev_init(sd, client, &ov2311_subdev_ops);
++	ret = ov2311_initialize_controls(ov2311);
++	if (ret)
++		goto err_destroy_mutex;
++
++	ret = ov2311_power_on(&client->dev);
++	if (ret)
++		goto err_free_handler;
++
++	ret = ov2311_check_sensor_id(ov2311, client);
++	if (ret)
++		goto err_power_off;
++
++	sd->internal_ops = &ov2311_internal_ops;
++	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
++
++	ov2311->pad.flags = MEDIA_PAD_FL_SOURCE;
++	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
++	ret = media_entity_pads_init(&sd->entity, 1, &ov2311->pad);
++	if (ret < 0)
++		goto err_power_off;
++
++	ret = v4l2_async_register_subdev(sd);
++	if (ret) {
++		dev_err(dev, "v4l2 async register subdev failed\n");
++		goto err_clean_entity;
++	}
++
++	pm_runtime_set_active(dev);
++	pm_runtime_enable(dev);
++	pm_runtime_idle(dev);
++
++	return 0;
++
++err_clean_entity:
++	media_entity_cleanup(&sd->entity);
++err_power_off:
++	ov2311_power_off(&client->dev);
++err_free_handler:
++	v4l2_ctrl_handler_free(&ov2311->ctrl_handler);
++err_destroy_mutex:
++	mutex_destroy(&ov2311->mutex);
++
++	return ret;
++}
++
++static int ov2311_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct ov2311 *ov2311 = to_ov2311(sd);
++
++	v4l2_async_unregister_subdev(sd);
++	media_entity_cleanup(&sd->entity);
++	v4l2_ctrl_handler_free(&ov2311->ctrl_handler);
++	mutex_destroy(&ov2311->mutex);
++
++	pm_runtime_disable(&client->dev);
++	if (!pm_runtime_status_suspended(&client->dev))
++		ov2311_power_off(&client->dev);
++	pm_runtime_set_suspended(&client->dev);
++
++	return 0;
++}
++
++static const struct of_device_id ov2311_of_match[] = {
++	{ .compatible = "ovti,ov2311" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, ov2311_of_match);
++
++static const struct i2c_device_id ov2311_match_id[] = {
++	{ "ovti,ov2311", 0 },
++	{ },
++};
++
++static struct i2c_driver ov2311_i2c_driver = {
++	.driver = {
++		.name = OV2311_NAME,
++		.pm = &ov2311_pm_ops,
++		.of_match_table = of_match_ptr(ov2311_of_match),
++	},
++	.probe		= &ov2311_probe,
++	.remove		= &ov2311_remove,
++	.id_table	= ov2311_match_id,
++};
++
++module_i2c_driver(ov2311_i2c_driver);
++
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com");
++MODULE_DESCRIPTION("OmniVision OV2311 sensor driver");
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0749-dtoverlays-Add-overlay-for-Omnivision-OV2311-image-s.patch b/target/linux/bcm27xx/patches-5.15/950-0749-dtoverlays-Add-overlay-for-Omnivision-OV2311-image-s.patch
new file mode 100644
index 0000000000..c0ba494438
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0749-dtoverlays-Add-overlay-for-Omnivision-OV2311-image-s.patch
@@ -0,0 +1,147 @@
+From f76b8590a1808ae27ce687b2ab5eedb3cd4b3149 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 25 Feb 2022 18:16:26 +0000
+Subject: [PATCH] dtoverlays: Add overlay for Omnivision OV2311 image
+ sensor
+
+Adds an overlay for the OV2311 1600x1300 monochrome global
+shutter image sensor.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 15 +++
+ arch/arm/boot/dts/overlays/ov2311-overlay.dts | 93 +++++++++++++++++++
+ 3 files changed, 109 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/ov2311-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -139,6 +139,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	mmc.dtbo \
+ 	mpu6050.dtbo \
+ 	mz61581.dtbo \
++	ov2311.dtbo \
+ 	ov5647.dtbo \
+ 	ov7251.dtbo \
+ 	ov9281.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2421,6 +2421,21 @@ Params: speed                   Display
+         xohms                   Touchpanel sensitivity (X-plate resistance)
+ 
+ 
++Name:   ov2311
++Info:   Omnivision OV2311 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=ov2311,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 0)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
++
++
+ Name:   ov5647
+ Info:   Omnivision OV5647 camera module.
+         Uses Unicam 1, which is the standard camera connector on most Pi
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ov2311-overlay.dts
+@@ -0,0 +1,93 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for OV2311 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	i2c_frag: fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ov2311: ov2311@60 {
++				compatible = "ovti,ov2311";
++				reg = <0x60>;
++				status = "okay";
++
++				clocks = <&cam1_clk>;
++				clock-names = "xvclk";
++
++				avdd-supply = <&cam1_reg>;
++				dovdd-supply = <&cam_dummy_reg>;
++				dvdd-supply = <&cam_dummy_reg>;
++
++				rotation = <0>;
++				orientation = <2>;
++
++				port {
++					ov2311_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						link-frequencies =
++							/bits/ 64 <400000000>;
++					};
++				};
++			};
++		};
++	};
++
++	csi_frag: fragment@1 {
++		target = <&csi1>;
++		csi: __overlay__ {
++			status = "okay";
++			brcm,media-controller;
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&ov2311_0>;
++					data-lanes = <1 2>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	clk_frag: fragment@4 {
++		target = <&cam1_clk>;
++		__overlay__ {
++			status = "okay";
++			clock-frequency = <24000000>;
++		};
++	};
++
++	__overrides__ {
++		rotation = <&ov2311>,"rotation:0";
++		orientation = <&ov2311>,"orientation:0";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&ov2311>, "clocks:0=",<&cam0_clk>,
++		       <&ov2311>, "avdd-supply:0=",<&cam0_reg>;
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0750-staging-vc-sm-cma-Avoid-log-spamming-on-Pi0-1-over-c.patch b/target/linux/bcm27xx/patches-5.15/950-0750-staging-vc-sm-cma-Avoid-log-spamming-on-Pi0-1-over-c.patch
new file mode 100644
index 0000000000..0258ae34e1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0750-staging-vc-sm-cma-Avoid-log-spamming-on-Pi0-1-over-c.patch
@@ -0,0 +1,41 @@
+From 79dd0145cb8220a5be0007350a7501056378e720 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 2 Mar 2022 17:23:16 +0000
+Subject: [PATCH] staging/vc-sm-cma: Avoid log spamming on Pi0/1 over
+ cache alias.
+
+Pi 0/1 use the 0x80000000 cache alias as the ARM also sees the world
+through the VPU L2 cache.
+vc-sm-cma was trying to ensure it was in an uncached alias (0xc), and
+complaining on every allocation if it weren't. Reduce this logging.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/staging/vc04_services/vc-sm-cma/vc_sm.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
+@@ -720,6 +720,7 @@ vc_sm_cma_import_dmabuf_internal(struct
+ 	struct dma_buf_attachment *attach = NULL;
+ 	struct sg_table *sgt = NULL;
+ 	dma_addr_t dma_addr;
++	u32 cache_alias;
+ 	int ret = 0;
+ 	int status;
+ 
+@@ -762,9 +763,13 @@ vc_sm_cma_import_dmabuf_internal(struct
+ 	import.type = VC_SM_ALLOC_NON_CACHED;
+ 	dma_addr = sg_dma_address(sgt->sgl);
+ 	import.addr = (u32)dma_addr;
+-	if ((import.addr & 0xC0000000) != 0xC0000000) {
++	cache_alias = import.addr & 0xC0000000;
++	if (cache_alias != 0xC0000000 && cache_alias != 0x80000000) {
+ 		pr_err("%s: Expecting an uncached alias for dma_addr %pad\n",
+ 		       __func__, &dma_addr);
++		/* Note that this assumes we're on >= Pi2, but it implies a
++		 * DT configuration error.
++		 */
+ 		import.addr |= 0xC0000000;
+ 	}
+ 	import.size = sg_dma_len(sgt->sgl);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0751-staging-vc04_services-isp-Permit-all-sRGB-colour-spa.patch b/target/linux/bcm27xx/patches-5.15/950-0751-staging-vc04_services-isp-Permit-all-sRGB-colour-spa.patch
new file mode 100644
index 0000000000..8d6e5b06e0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0751-staging-vc04_services-isp-Permit-all-sRGB-colour-spa.patch
@@ -0,0 +1,161 @@
+From 22db5abf108cebb29b38d92e895b65c16df5e82f Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Wed, 2 Mar 2022 16:47:37 +0000
+Subject: [PATCH] staging: vc04_services: isp: Permit all sRGB colour
+ spaces on ISP outputs
+
+ISP outputs actually support all colour spaces that are fundamentally
+sRGB underneath, regardless of whether an RGB or YUV output format is
+actually requested.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ .../bcm2835-isp/bcm2835-isp-fmts.h            | 45 ++++++++++---------
+ 1 file changed, 25 insertions(+), 20 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
+@@ -34,14 +34,19 @@ struct bcm2835_isp_fmt {
+ #define V4L2_COLORSPACE_MASK_RAW V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_RAW)
+ 
+ /*
+- * The colour spaces we support for YUV outputs. SRGB features here because,
+- * once you assign the default transfer func and so on, it and JPEG effectively
+- * mean the same.
++ * All three colour spaces JPEG, SMPTE170M and REC709 are fundamentally sRGB
++ * underneath (as near as makes no difference to us), just with different YCbCr
++ * encodings. Therefore the ISP can generate sRGB on its main output and any of
++ * the others on its low resolution output. Applications should, when using both
++ * outputs, program the colour spaces on them to be the same, matching whatever
++ * is requested for the low resolution output, even if the main output is
++ * producing an RGB format. In turn this requires us to allow all these colour
++ * spaces for every YUV/RGB output format.
+  */
+-#define V4L2_COLORSPACE_MASK_YUV (V4L2_COLORSPACE_MASK_JPEG | \
+-				  V4L2_COLORSPACE_MASK_SRGB | \
+-				  V4L2_COLORSPACE_MASK_SMPTE170M | \
+-				  V4L2_COLORSPACE_MASK_REC709)
++#define V4L2_COLORSPACE_MASK_ALL_SRGB (V4L2_COLORSPACE_MASK_JPEG |	\
++				       V4L2_COLORSPACE_MASK_SRGB |	\
++				       V4L2_COLORSPACE_MASK_SMPTE170M |	\
++				       V4L2_COLORSPACE_MASK_REC709)
+ 
+ static const struct bcm2835_isp_fmt supported_formats[] = {
+ 	{
+@@ -51,7 +56,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_I420,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_JPEG,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -60,7 +65,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_YV12,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -69,7 +74,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_NV12,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -78,7 +83,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_NV21,
+ 		.size_multiplier_x2 = 3,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -87,7 +92,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_YUYV,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -96,7 +101,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_UYVY,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -105,7 +110,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_YVYU,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -114,7 +119,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_VYUY,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_YUV,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ 		.step_size	    = 2,
+ 	}, {
+@@ -124,7 +129,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_RGB24,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+@@ -133,7 +138,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_RGB16,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+@@ -142,7 +147,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 32,
+ 		.mmal_fmt	    = MMAL_ENCODING_BGR24,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+@@ -151,7 +156,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_BGRA,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
+@@ -160,7 +165,7 @@ static const struct bcm2835_isp_fmt supp
+ 		.bytesperline_align = 64,
+ 		.mmal_fmt	    = MMAL_ENCODING_RGBA,
+ 		.size_multiplier_x2 = 2,
+-		.colorspace_mask    = V4L2_COLORSPACE_MASK_SRGB,
++		.colorspace_mask    = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ 		.colorspace_default = V4L2_COLORSPACE_SRGB,
+ 		.step_size	    = 1,
+ 	}, {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0752-drivers-staging-bcm2835-isp-Do-not-cleanup-mmal-vcsm.patch b/target/linux/bcm27xx/patches-5.15/950-0752-drivers-staging-bcm2835-isp-Do-not-cleanup-mmal-vcsm.patch
new file mode 100644
index 0000000000..fb9d6240bc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0752-drivers-staging-bcm2835-isp-Do-not-cleanup-mmal-vcsm.patch
@@ -0,0 +1,43 @@
+From 85c2fec6528038bd200c4999978a7c2a7e86a407 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Thu, 3 Mar 2022 16:45:53 +0000
+Subject: [PATCH] drivers: staging: bcm2835-isp: Do not cleanup mmal
+ vcsm buffer on stop_streaming
+
+On stop_streaming() the vcsm buffer handle gets released by the buffer cleanup
+code.  This will subsequently cause and error if userland re-queues the same
+buffer on the next start_streaming() call.
+
+Remove this cleanup code and rely on the vb2_ops->buf_cleanup() call to do the
+cleanups instead.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c | 9 ---------
+ 1 file changed, 9 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -622,7 +622,6 @@ static void bcm2835_isp_node_stop_stream
+ {
+ 	struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
+ 	struct bcm2835_isp_dev *dev = node_get_dev(node);
+-	unsigned int i;
+ 	int ret;
+ 
+ 	v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: node %s[%d], mmal port %p\n",
+@@ -653,14 +652,6 @@ static void bcm2835_isp_node_stop_stream
+ 		}
+ 	}
+ 
+-	/* Release the VCSM handle here to release the associated dmabuf */
+-	for (i = 0; i < q->num_buffers; i++) {
+-		struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(q->bufs[i]);
+-		struct bcm2835_isp_buffer *buf =
+-			container_of(vb2, struct bcm2835_isp_buffer, vb);
+-		bcm2835_isp_mmal_buf_cleanup(&buf->mmal);
+-	}
+-
+ 	atomic_dec(&dev->num_streaming);
+ 	/* If all ports disabled, then disable the component */
+ 	if (atomic_read(&dev->num_streaming) == 0) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0753-drm-vc4-Fix-out-of-order-frames-during-asynchronous-.patch b/target/linux/bcm27xx/patches-5.15/950-0753-drm-vc4-Fix-out-of-order-frames-during-asynchronous-.patch
new file mode 100644
index 0000000000..a5505849e6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0753-drm-vc4-Fix-out-of-order-frames-during-asynchronous-.patch
@@ -0,0 +1,97 @@
+From a0bc59127231cbea506651c362d4836a0ff5591f Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 8 Sep 2021 21:12:26 +0200
+Subject: [PATCH] drm/vc4: Fix out of order frames during asynchronous
+ page flips
+
+When doing an asynchronous page flip (PAGE_FLIP ioctl with the
+DRM_MODE_PAGE_FLIP_ASYNC flag set), the current code waits for the
+possible GPU buffer being rendered through a call to
+vc4_queue_seqno_cb().
+
+On the BCM2835-37, the GPU driver is part of the vc4 driver and that
+function is defined in vc4_gem.c to wait for the buffer to be rendered,
+and once it's done, call a callback.
+
+However, on the BCM2711 used on the RaspberryPi4, the GPU driver is
+separate (v3d) and that function won't do anything. This was working
+because we were going into a path, due to uninitialized variables, that
+was always scheduling the callback.
+
+However, we were never actually waiting for the buffer to be rendered
+which was resulting in frames being displayed out of order.
+
+The generic API to signal those kind of completion in the kernel are the
+DMA fences, and fortunately the v3d drivers supports them and signal
+when its job is done. That API also provides an equivalent function that
+allows to have a callback being executed when the fence is signalled as
+done.
+
+Let's change our driver a bit to rely on the previous function for the
+older SoCs, and on DMA fences for the BCM2711.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 37 ++++++++++++++++++++++++++++++++--
+ 1 file changed, 35 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -813,6 +813,7 @@ struct vc4_async_flip_state {
+ 	struct drm_pending_vblank_event *event;
+ 
+ 	struct vc4_seqno_cb cb;
++	struct dma_fence_cb fence_cb;
+ };
+ 
+ /* Called when the V3D execution for the BO being flipped to is done, so that
+@@ -858,6 +859,39 @@ vc4_async_page_flip_complete(struct vc4_
+ 	kfree(flip_state);
+ }
+ 
++static void vc4_async_page_flip_fence_complete(struct dma_fence *fence,
++					       struct dma_fence_cb *cb)
++{
++	struct vc4_async_flip_state *flip_state =
++		container_of(cb, struct vc4_async_flip_state, fence_cb);
++
++	vc4_async_page_flip_complete(&flip_state->cb);
++	dma_fence_put(fence);
++}
++
++static int vc4_async_set_fence_cb(struct drm_device *dev,
++				  struct vc4_async_flip_state *flip_state)
++{
++	struct drm_framebuffer *fb = flip_state->fb;
++	struct drm_gem_cma_object *cma_bo = drm_fb_cma_get_gem_obj(fb, 0);
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct dma_fence *fence;
++
++	if (!vc4->hvs->hvs5) {
++		struct vc4_bo *bo = to_vc4_bo(&cma_bo->base);
++
++		return vc4_queue_seqno_cb(dev, &flip_state->cb, bo->seqno,
++					  vc4_async_page_flip_complete);
++	}
++
++	fence = dma_fence_get(dma_resv_excl_fence(cma_bo->base.resv));
++	if (dma_fence_add_callback(fence, &flip_state->fence_cb,
++				   vc4_async_page_flip_fence_complete))
++		vc4_async_page_flip_fence_complete(fence, &flip_state->fence_cb);
++
++	return 0;
++}
++
+ /* Implements async (non-vblank-synced) page flips.
+  *
+  * The page flip ioctl needs to return immediately, so we grab the
+@@ -918,8 +952,7 @@ static int vc4_async_page_flip(struct dr
+ 	 */
+ 	drm_atomic_set_fb_for_plane(plane->state, fb);
+ 
+-	vc4_queue_seqno_cb(dev, &flip_state->cb, bo->seqno,
+-			   vc4_async_page_flip_complete);
++	vc4_async_set_fence_cb(dev, flip_state);
+ 
+ 	/* Driver takes ownership of state on successful async commit. */
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0754-staging-vc04_services-codec-Add-support-for-V4L2_PIX.patch b/target/linux/bcm27xx/patches-5.15/950-0754-staging-vc04_services-codec-Add-support-for-V4L2_PIX.patch
new file mode 100644
index 0000000000..59ff0888b2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0754-staging-vc04_services-codec-Add-support-for-V4L2_PIX.patch
@@ -0,0 +1,30 @@
+From 64bab887e1861c3db19a37cfab41a45e296e2cc1 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Mon, 7 Mar 2022 10:00:33 +0000
+Subject: [PATCH] staging: vc04_services: codec: Add support for
+ V4L2_PIX_FMT_RGBA32 format
+
+We already support V4L2_PIX_FMT_BGR32 which is the same thing with red
+and blue swapped, so it makes sense to include this variant as well.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c       | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -241,6 +241,13 @@ static const struct bcm2835_codec_fmt su
+ 		.mmal_fmt		= MMAL_ENCODING_BGRA,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
++		.fourcc			= V4L2_PIX_FMT_RGBA32,
++		.depth			= 32,
++		.bytesperline_align	= { 32, 32, 32, 32 },
++		.flags			= 0,
++		.mmal_fmt		= MMAL_ENCODING_RGBA,
++		.size_multiplier_x2	= 2,
++	}, {
+ 		/* Bayer formats */
+ 		/* 8 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB8,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0755-drm-vc4-hvs-Reset-muxes-at-probe-time.patch b/target/linux/bcm27xx/patches-5.15/950-0755-drm-vc4-hvs-Reset-muxes-at-probe-time.patch
new file mode 100644
index 0000000000..f7677616bb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0755-drm-vc4-hvs-Reset-muxes-at-probe-time.patch
@@ -0,0 +1,78 @@
+From d2a60430df21f213b9b9d2eb46d2f4afbbea3213 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 4 Mar 2022 16:24:00 +0100
+Subject: [PATCH] drm/vc4: hvs: Reset muxes at probe time
+
+By default, the HVS driver will force the HVS output 3 to be muxed to
+the HVS channel 2. However, the Transposer can only be assigned to the
+HVS channel 2, so whenever we try to use the writeback connector, we'll
+mux its associated output (Output 2) to the channel 2.
+
+This leads to both the output 2 and 3 feeding from the same channel,
+which is explicitly discouraged in the documentation.
+
+In order to avoid this, let's reset all the output muxes to their reset
+value.
+
+Fixes: 87ebcd42fb7b ("drm/vc4: crtc: Assign output to channel automatically")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c | 26 +++++++++++++++++++++-----
+ 1 file changed, 21 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -1017,6 +1017,7 @@ static int vc4_hvs_bind(struct device *d
+ 	struct vc4_hvs *hvs = NULL;
+ 	int ret;
+ 	u32 dispctrl;
++	u32 reg;
+ 
+ 	hvs = devm_kzalloc(&pdev->dev, sizeof(*hvs), GFP_KERNEL);
+ 	if (!hvs)
+@@ -1090,6 +1091,26 @@ static int vc4_hvs_bind(struct device *d
+ 
+ 	vc4->hvs = hvs;
+ 
++	reg = HVS_READ(SCALER_DISPECTRL);
++	reg &= ~SCALER_DISPECTRL_DSP2_MUX_MASK;
++	HVS_WRITE(SCALER_DISPECTRL,
++		  reg | VC4_SET_FIELD(0, SCALER_DISPECTRL_DSP2_MUX));
++
++	reg = HVS_READ(SCALER_DISPCTRL);
++	reg &= ~SCALER_DISPCTRL_DSP3_MUX_MASK;
++	HVS_WRITE(SCALER_DISPCTRL,
++		  reg | VC4_SET_FIELD(3, SCALER_DISPCTRL_DSP3_MUX));
++
++	reg = HVS_READ(SCALER_DISPEOLN);
++	reg &= ~SCALER_DISPEOLN_DSP4_MUX_MASK;
++	HVS_WRITE(SCALER_DISPEOLN,
++		  reg | VC4_SET_FIELD(3, SCALER_DISPEOLN_DSP4_MUX));
++
++	reg = HVS_READ(SCALER_DISPDITHER);
++	reg &= ~SCALER_DISPDITHER_DSP5_MUX_MASK;
++	HVS_WRITE(SCALER_DISPDITHER,
++		  reg | VC4_SET_FIELD(3, SCALER_DISPDITHER_DSP5_MUX));
++
+ 	dispctrl = HVS_READ(SCALER_DISPCTRL);
+ 
+ 	dispctrl |= SCALER_DISPCTRL_ENABLE;
+@@ -1097,10 +1118,6 @@ static int vc4_hvs_bind(struct device *d
+ 		    SCALER_DISPCTRL_DISPEIRQ(1) |
+ 		    SCALER_DISPCTRL_DISPEIRQ(2);
+ 
+-	/* Set DSP3 (PV1) to use HVS channel 2, which would otherwise
+-	 * be unused.
+-	 */
+-	dispctrl &= ~SCALER_DISPCTRL_DSP3_MUX_MASK;
+ 	dispctrl &= ~(SCALER_DISPCTRL_DMAEIRQ |
+ 		      SCALER_DISPCTRL_SLVWREIRQ |
+ 		      SCALER_DISPCTRL_SLVRDEIRQ |
+@@ -1114,7 +1131,6 @@ static int vc4_hvs_bind(struct device *d
+ 		      SCALER_DISPCTRL_DSPEISLUR(1) |
+ 		      SCALER_DISPCTRL_DSPEISLUR(2) |
+ 		      SCALER_DISPCTRL_SCLEIRQ);
+-	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_DSP3_MUX);
+ 
+ 	HVS_WRITE(SCALER_DISPCTRL, dispctrl);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0756-drm-vc4-kms-Store-channel-in-local-variable.patch b/target/linux/bcm27xx/patches-5.15/950-0756-drm-vc4-kms-Store-channel-in-local-variable.patch
new file mode 100644
index 0000000000..e15e0a7135
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0756-drm-vc4-kms-Store-channel-in-local-variable.patch
@@ -0,0 +1,70 @@
+From 753f22ccb26a9085c987700206bdf6724be9b547 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 4 Mar 2022 15:58:51 +0100
+Subject: [PATCH] drm/vc4: kms: Store channel in local variable
+
+We use the channel from our vc4_crtc_state structure in multiple places,
+let's store it in a local variable to make it cleaner.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 15 ++++++++-------
+ 1 file changed, 8 insertions(+), 7 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -286,13 +286,14 @@ static void vc5_hvs_pv_muxing_commit(str
+ 	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
+ 		struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state);
+ 		struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
++		unsigned int channel = vc4_state->assigned_channel;
+ 
+ 		if (!vc4_state->update_muxing)
+ 			continue;
+ 
+ 		switch (vc4_crtc->data->hvs_output) {
+ 		case 2:
+-			mux = (vc4_state->assigned_channel == 2) ? 0 : 1;
++			mux = (channel == 2) ? 0 : 1;
+ 			reg = HVS_READ(SCALER_DISPECTRL);
+ 			HVS_WRITE(SCALER_DISPECTRL,
+ 				  (reg & ~SCALER_DISPECTRL_DSP2_MUX_MASK) |
+@@ -300,10 +301,10 @@ static void vc5_hvs_pv_muxing_commit(str
+ 			break;
+ 
+ 		case 3:
+-			if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
++			if (channel == VC4_HVS_CHANNEL_DISABLED)
+ 				mux = 3;
+ 			else
+-				mux = vc4_state->assigned_channel;
++				mux = channel;
+ 
+ 			reg = HVS_READ(SCALER_DISPCTRL);
+ 			HVS_WRITE(SCALER_DISPCTRL,
+@@ -312,10 +313,10 @@ static void vc5_hvs_pv_muxing_commit(str
+ 			break;
+ 
+ 		case 4:
+-			if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
++			if (channel == VC4_HVS_CHANNEL_DISABLED)
+ 				mux = 3;
+ 			else
+-				mux = vc4_state->assigned_channel;
++				mux = channel;
+ 
+ 			reg = HVS_READ(SCALER_DISPEOLN);
+ 			HVS_WRITE(SCALER_DISPEOLN,
+@@ -325,10 +326,10 @@ static void vc5_hvs_pv_muxing_commit(str
+ 			break;
+ 
+ 		case 5:
+-			if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
++			if (channel == VC4_HVS_CHANNEL_DISABLED)
+ 				mux = 3;
+ 			else
+-				mux = vc4_state->assigned_channel;
++				mux = channel;
+ 
+ 			reg = HVS_READ(SCALER_DISPDITHER);
+ 			HVS_WRITE(SCALER_DISPDITHER,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0757-drm-vc4-kms-Warn-if-we-have-an-incompatible-muxing-s.patch b/target/linux/bcm27xx/patches-5.15/950-0757-drm-vc4-kms-Warn-if-we-have-an-incompatible-muxing-s.patch
new file mode 100644
index 0000000000..4c02efe88f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0757-drm-vc4-kms-Warn-if-we-have-an-incompatible-muxing-s.patch
@@ -0,0 +1,29 @@
+From 87157f42cd40d9302ad2ebae582768b52c46c8e0 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 4 Mar 2022 15:59:08 +0100
+Subject: [PATCH] drm/vc4: kms: Warn if we have an incompatible muxing
+ setup
+
+The documentation explicitly states we must prevent the output
+2 and 3 from feeding from the same HVS channel.
+
+Let's add a warning to make some noise if we ever find ourselves in such
+a case.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -293,6 +293,9 @@ static void vc5_hvs_pv_muxing_commit(str
+ 
+ 		switch (vc4_crtc->data->hvs_output) {
+ 		case 2:
++			WARN_ON(VC4_GET_FIELD(HVS_READ(SCALER_DISPCTRL),
++					      SCALER_DISPCTRL_DSP3_MUX) == channel);
++
+ 			mux = (channel == 2) ? 0 : 1;
+ 			reg = HVS_READ(SCALER_DISPECTRL);
+ 			HVS_WRITE(SCALER_DISPECTRL,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0758-drm-vc4-kms-Improve-logging.patch b/target/linux/bcm27xx/patches-5.15/950-0758-drm-vc4-kms-Improve-logging.patch
new file mode 100644
index 0000000000..d6ff838130
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0758-drm-vc4-kms-Improve-logging.patch
@@ -0,0 +1,66 @@
+From 0fc2455e0b6cf188c529915de2627bdfb3e5ff01 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 4 Mar 2022 15:59:40 +0100
+Subject: [PATCH] drm/vc4: kms: Improve logging
+
+When debugging, finding out what muxing decisions were made and what the
+actual core clock rate is is always useful, so let's add some more
+messages.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 20 +++++++++++++++++++-
+ 1 file changed, 19 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -447,6 +447,9 @@ static void vc4_atomic_commit_tail(struc
+ 
+ 		/* And drop the temporary request */
+ 		clk_request_done(core_req);
++
++		drm_dbg(dev, "Core clock actual rate: %lu Hz\n",
++			clk_get_rate(hvs->core_clk));
+ 	}
+ }
+ 
+@@ -827,9 +830,18 @@ static int vc4_pv_muxing_atomic_check(st
+ 		if (vc4->firmware_kms)
+ 			continue;
+ 
++		drm_dbg(dev, "%s: Trying to find a channel.\n", crtc->name);
++
+ 		/* Nothing to do here, let's skip it */
+-		if (old_crtc_state->enable == new_crtc_state->enable)
++		if (old_crtc_state->enable == new_crtc_state->enable) {
++			if (new_crtc_state->enable)
++				drm_dbg(dev, "%s: Already enabled, reusing channel %d.\n",
++					crtc->name, new_vc4_crtc_state->assigned_channel);
++			else
++				drm_dbg(dev, "%s: Disabled, ignoring.\n", crtc->name);
++
+ 			continue;
++		}
+ 
+ 		/* Muxing will need to be modified, mark it as such */
+ 		new_vc4_crtc_state->update_muxing = true;
+@@ -837,6 +849,10 @@ static int vc4_pv_muxing_atomic_check(st
+ 		/* If we're disabling our CRTC, we put back our channel */
+ 		if (!new_crtc_state->enable) {
+ 			channel = old_vc4_crtc_state->assigned_channel;
++
++			drm_dbg(dev, "%s: Disabling, Freeing channel %d\n",
++				crtc->name, channel);
++
+ 			hvs_new_state->fifo_state[channel].in_use = false;
+ 			new_vc4_crtc_state->assigned_channel = VC4_HVS_CHANNEL_DISABLED;
+ 			continue;
+@@ -871,6 +887,8 @@ static int vc4_pv_muxing_atomic_check(st
+ 			return -EINVAL;
+ 
+ 		channel = ffs(matching_channels) - 1;
++
++		drm_dbg(dev, "Assigned HVS channel %d to CRTC %s\n", channel, crtc->name);
+ 		new_vc4_crtc_state->assigned_channel = channel;
+ 		unassigned_channels &= ~BIT(channel);
+ 		hvs_new_state->fifo_state[channel].in_use = true;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0759-drm-vc4-txp-Don-t-set-TXP_VSTART_AT_EOF.patch b/target/linux/bcm27xx/patches-5.15/950-0759-drm-vc4-txp-Don-t-set-TXP_VSTART_AT_EOF.patch
new file mode 100644
index 0000000000..f8544dd039
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0759-drm-vc4-txp-Don-t-set-TXP_VSTART_AT_EOF.patch
@@ -0,0 +1,31 @@
+From b93868be23764905325c200832d58c4f2c0dda7a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 4 Mar 2022 15:55:25 +0100
+Subject: [PATCH] drm/vc4: txp: Don't set TXP_VSTART_AT_EOF
+
+The TXP_VSTART_AT_EOF will generate a second VSTART signal to the HVS.
+However, the HVS waits for VSTART to enable the FIFO and will thus start
+filling the FIFO before the start of the frame.
+
+This leads to corruption at the beginning of the first frame, and
+content from the previous frame at the beginning of the next frames.
+
+Since one VSTART is enough, let's get rid of it.
+
+Fixes: 008095e065a8 ("drm/vc4: Add support for the transposer block")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_txp.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_txp.c
++++ b/drivers/gpu/drm/vc4/vc4_txp.c
+@@ -298,7 +298,7 @@ static void vc4_txp_connector_atomic_com
+ 	if (WARN_ON(i == ARRAY_SIZE(drm_fmts)))
+ 		return;
+ 
+-	ctrl = TXP_GO | TXP_VSTART_AT_EOF | TXP_EI |
++	ctrl = TXP_GO | TXP_EI |
+ 	       VC4_SET_FIELD(0xf, TXP_BYTE_ENABLE) |
+ 	       VC4_SET_FIELD(txp_fmts[i], TXP_FORMAT);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0760-drm-vc4-txp-Force-alpha-to-be-0xff-if-it-s-disabled.patch b/target/linux/bcm27xx/patches-5.15/950-0760-drm-vc4-txp-Force-alpha-to-be-0xff-if-it-s-disabled.patch
new file mode 100644
index 0000000000..17baa42376
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0760-drm-vc4-txp-Force-alpha-to-be-0xff-if-it-s-disabled.patch
@@ -0,0 +1,29 @@
+From f605781b135e2ebe98aba1d569167bb0d0886930 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 4 Mar 2022 16:00:16 +0100
+Subject: [PATCH] drm/vc4: txp: Force alpha to be 0xff if it's disabled
+
+If we use a format that has padding instead of the alpha component (such
+as XRGB8888), it appears that the Transposer will fill the padding to 0,
+disregarding what was stored in the input buffer padding.
+
+This leads to issues with IGT, since it will set the padding to 0xff,
+but will then compare the CRC of the two frames which will thus fail.
+
+Fixes: 008095e065a8 ("drm/vc4: Add support for the transposer block")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_txp.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_txp.c
++++ b/drivers/gpu/drm/vc4/vc4_txp.c
+@@ -304,6 +304,8 @@ static void vc4_txp_connector_atomic_com
+ 
+ 	if (fb->format->has_alpha)
+ 		ctrl |= TXP_ALPHA_ENABLE;
++	else
++		ctrl |= TXP_ALPHA_INVERT;
+ 
+ 	gem = drm_fb_cma_get_gem_obj(fb, 0);
+ 	TXP_WRITE(TXP_DST_PTR, gem->paddr + fb->offsets[0]);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch b/target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch
new file mode 100644
index 0000000000..efe7acafd9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0761-ARM-dts-bcm2711-rpi-ds-Disable-the-BCM2835-STC.patch
@@ -0,0 +1,27 @@
+From 296f6ab3a619b47b6f8d4ac42ec704a700df08b2 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 8 Mar 2022 12:47:49 +0000
+Subject: [PATCH] ARM: dts: bcm2711-rpi-ds: Disable the BCM2835 STC
+
+Although BCM2711 still includes the old BCM2835 system timer, the newer
+per-core local timers are preferred because they are more efficient to
+access and can generate core-specific interrupts. Make the usage clear
+by disabling the driver for the old STC.
+
+See: https://github.com/raspberrypi/firmware/issues/1702
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-ds.dtsi | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
++++ b/arch/arm/boot/dts/bcm2711-rpi-ds.dtsi
+@@ -203,3 +203,7 @@
+ &dvp {
+ 	status = "disabled";
+ };
++
++&system_timer {
++	status = "disabled";
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0762-drm-bridge-Introduce-pre_enable_upstream_first-to-al.patch b/target/linux/bcm27xx/patches-5.15/950-0762-drm-bridge-Introduce-pre_enable_upstream_first-to-al.patch
new file mode 100644
index 0000000000..58c81c015d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0762-drm-bridge-Introduce-pre_enable_upstream_first-to-al.patch
@@ -0,0 +1,308 @@
+From 2c8b6954e6168d56cc6d35f5f6d075c826a9b8e1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 16 Dec 2021 15:25:35 +0000
+Subject: [PATCH] drm/bridge: Introduce pre_enable_upstream_first to
+ alter bridge init order
+
+DSI sink devices typically want the DSI host powered up and configured
+before they are powered up. pre_enable is the place this would normally
+happen, but they are called in reverse order from panel/connector towards
+the encoder, which is the "wrong" order.
+
+Add a new flag pre_enable_upstream_first that any bridge can set
+to swap the order of pre_enable (and post_disable) for that and the
+immediately upstream bridge.
+Should the immediately upstream bridge also set the
+pre_enable_upstream_first flag, the bridge upstream of that will be called
+before either of those which requested pre_enable_upstream_first.
+
+eg:
+- Panel
+- Bridge 1
+- Bridge 2 pre_enable_upstream_first
+- Bridge 3
+- Bridge 4 pre_enable_upstream_first
+- Bridge 5 pre_enable_upstream_first
+- Bridge 6
+- Encoder
+Would result in pre_enable's being called as Panel, Bridge 1, Bridge 3,
+Bridge 2, Bridge 6, Bridge 5, Bridge 4, Encoder.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/drm_bridge.c | 177 +++++++++++++++++++++++++----------
+ include/drm/drm_bridge.h     |   8 ++
+ 2 files changed, 137 insertions(+), 48 deletions(-)
+
+--- a/drivers/gpu/drm/drm_bridge.c
++++ b/drivers/gpu/drm/drm_bridge.c
+@@ -463,20 +463,15 @@ EXPORT_SYMBOL(drm_bridge_chain_disable);
+  * encoder chain, starting from the first bridge to the last. These are called
+  * after completing the encoder's prepare op.
+  *
++ * If a bridge sets @pre_enable_upstream_first, then the @post_disable for that
++ * bridge will be called before the previous one to reverse the @pre_enable
++ * calling direction.
++ *
+  * Note: the bridge passed should be the one closest to the encoder
+  */
+ void drm_bridge_chain_post_disable(struct drm_bridge *bridge)
+ {
+-	struct drm_encoder *encoder;
+-
+-	if (!bridge)
+-		return;
+-
+-	encoder = bridge->encoder;
+-	list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) {
+-		if (bridge->funcs->post_disable)
+-			bridge->funcs->post_disable(bridge);
+-	}
++	drm_atomic_bridge_chain_post_disable(bridge, NULL);
+ }
+ EXPORT_SYMBOL(drm_bridge_chain_post_disable);
+ 
+@@ -518,24 +513,14 @@ EXPORT_SYMBOL(drm_bridge_chain_mode_set)
+  * chain, starting from the last bridge to the first. These are called
+  * before calling the encoder's commit op.
+  *
++ * If a bridge sets @pre_enable_upstream_first, then the @pre_enable for the
++ * previous bridge will be called before @pre_enable of this bridge.
++ *
+  * Note: the bridge passed should be the one closest to the encoder
+  */
+ void drm_bridge_chain_pre_enable(struct drm_bridge *bridge)
+ {
+-	struct drm_encoder *encoder;
+-	struct drm_bridge *iter;
+-
+-	if (!bridge)
+-		return;
+-
+-	encoder = bridge->encoder;
+-	list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) {
+-		if (iter->funcs->pre_enable)
+-			iter->funcs->pre_enable(iter);
+-
+-		if (iter == bridge)
+-			break;
+-	}
++	drm_atomic_bridge_chain_pre_enable(bridge, NULL);
+ }
+ EXPORT_SYMBOL(drm_bridge_chain_pre_enable);
+ 
+@@ -607,6 +592,25 @@ void drm_atomic_bridge_chain_disable(str
+ }
+ EXPORT_SYMBOL(drm_atomic_bridge_chain_disable);
+ 
++static void drm_atomic_bridge_call_post_disable(struct drm_bridge *bridge,
++						struct drm_atomic_state *old_state)
++{
++	if (old_state && bridge->funcs->atomic_post_disable) {
++		struct drm_bridge_state *old_bridge_state;
++
++		old_bridge_state =
++			drm_atomic_get_old_bridge_state(old_state,
++							bridge);
++		if (WARN_ON(!old_bridge_state))
++			return;
++
++		bridge->funcs->atomic_post_disable(bridge,
++						   old_bridge_state);
++	} else if (bridge->funcs->post_disable) {
++		bridge->funcs->post_disable(bridge);
++	}
++}
++
+ /**
+  * drm_atomic_bridge_chain_post_disable - cleans up after disabling all bridges
+  *					  in the encoder chain
+@@ -617,6 +621,9 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_di
+  * &drm_bridge_funcs.post_disable) op for all the bridges in the encoder chain,
+  * starting from the first bridge to the last. These are called after completing
+  * &drm_encoder_helper_funcs.atomic_disable
++ * If a bridge sets @pre_enable_upstream_first, then the @post_disable for that
++ * bridge will be called before the previous one to reverse the @pre_enable
++ * calling direction.
+  *
+  * Note: the bridge passed should be the one closest to the encoder
+  */
+@@ -624,30 +631,75 @@ void drm_atomic_bridge_chain_post_disabl
+ 					  struct drm_atomic_state *old_state)
+ {
+ 	struct drm_encoder *encoder;
++	struct drm_bridge *next, *limit;
+ 
+ 	if (!bridge)
+ 		return;
+ 
+ 	encoder = bridge->encoder;
++
+ 	list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) {
+-		if (bridge->funcs->atomic_post_disable) {
+-			struct drm_bridge_state *old_bridge_state;
++		limit = NULL;
+ 
+-			old_bridge_state =
+-				drm_atomic_get_old_bridge_state(old_state,
+-								bridge);
+-			if (WARN_ON(!old_bridge_state))
+-				return;
++		if (!list_is_last(&bridge->chain_node, &encoder->bridge_chain)) {
++			next = list_next_entry(bridge, chain_node);
+ 
+-			bridge->funcs->atomic_post_disable(bridge,
+-							   old_bridge_state);
+-		} else if (bridge->funcs->post_disable) {
+-			bridge->funcs->post_disable(bridge);
++			if (next->pre_enable_upstream_first) {
++				/* Downstream bridge had requested that upstream
++				 * was enabled first, so disabled last
++				 */
++				limit = next;
++
++				/* Find the next bridge that has NOT requested
++				 * upstream to be enabled first / disabled last
++				 */
++				list_for_each_entry_from(next, &encoder->bridge_chain,
++							 chain_node) {
++					if (next->pre_enable_upstream_first) {
++						next = list_prev_entry(next, chain_node);
++						limit = next;
++						break;
++					}
++				}
++
++				/* Call these bridges in reverse order */
++				list_for_each_entry_from_reverse(next, &encoder->bridge_chain,
++								 chain_node) {
++					if (next == bridge)
++						break;
++
++					drm_atomic_bridge_call_post_disable(next,
++									    old_state);
++				}
++			}
+ 		}
++
++		drm_atomic_bridge_call_post_disable(bridge, old_state);
++
++		if (limit)
++			bridge = limit;
+ 	}
+ }
+ EXPORT_SYMBOL(drm_atomic_bridge_chain_post_disable);
+ 
++static void drm_atomic_bridge_call_pre_enable(struct drm_bridge *bridge,
++					      struct drm_atomic_state *old_state)
++{
++	if (old_state && bridge->funcs->atomic_pre_enable) {
++		struct drm_bridge_state *old_bridge_state;
++
++		old_bridge_state =
++			drm_atomic_get_old_bridge_state(old_state,
++							bridge);
++		if (WARN_ON(!old_bridge_state))
++			return;
++
++		bridge->funcs->atomic_pre_enable(bridge, old_bridge_state);
++	} else if (bridge->funcs->pre_enable) {
++		bridge->funcs->pre_enable(bridge);
++	}
++}
++
+ /**
+  * drm_atomic_bridge_chain_pre_enable - prepares for enabling all bridges in
+  *					the encoder chain
+@@ -659,33 +711,62 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_po
+  * starting from the last bridge to the first. These are called before calling
+  * &drm_encoder_helper_funcs.atomic_enable
+  *
++ * If a bridge sets @pre_enable_upstream_first, then the pre_enable for the
++ * upstream bridge will be called before pre_enable of this bridge.
++ *
+  * Note: the bridge passed should be the one closest to the encoder
+  */
+ void drm_atomic_bridge_chain_pre_enable(struct drm_bridge *bridge,
+ 					struct drm_atomic_state *old_state)
+ {
+ 	struct drm_encoder *encoder;
+-	struct drm_bridge *iter;
++	struct drm_bridge *iter, *next, *limit;
+ 
+ 	if (!bridge)
+ 		return;
+ 
+ 	encoder = bridge->encoder;
+-	list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) {
+-		if (iter->funcs->atomic_pre_enable) {
+-			struct drm_bridge_state *old_bridge_state;
+ 
+-			old_bridge_state =
+-				drm_atomic_get_old_bridge_state(old_state,
+-								iter);
+-			if (WARN_ON(!old_bridge_state))
+-				return;
++	list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) {
++		if (iter->pre_enable_upstream_first) {
++			next = iter;
++			limit = bridge;
++			list_for_each_entry_from_reverse(next,
++							 &encoder->bridge_chain,
++							 chain_node) {
++				if (next == bridge)
++					break;
++
++				if (!next->pre_enable_upstream_first) {
++					/* Found first bridge that does NOT
++					 * request upstream to be enabled first
++					 */
++					limit = list_prev_entry(next, chain_node);
++					break;
++				}
++			}
++
++			list_for_each_entry_from(next, &encoder->bridge_chain, chain_node) {
++				/* Call requested upstream bridge pre_enable
++				 * in order.
++				 */
++				if (next == iter)
++					/* At the first bridgge to request upstream
++					 * bridges called first.
++					 */
++					break;
+ 
+-			iter->funcs->atomic_pre_enable(iter, old_bridge_state);
+-		} else if (iter->funcs->pre_enable) {
+-			iter->funcs->pre_enable(iter);
++				drm_atomic_bridge_call_pre_enable(next, old_state);
++			}
+ 		}
+ 
++		drm_atomic_bridge_call_pre_enable(iter, old_state);
++
++		if (iter->pre_enable_upstream_first)
++			/* Jump all bridges that we have already pre_enabled
++			 */
++			iter = limit;
++
+ 		if (iter == bridge)
+ 			break;
+ 	}
+--- a/include/drm/drm_bridge.h
++++ b/include/drm/drm_bridge.h
+@@ -762,6 +762,14 @@ struct drm_bridge {
+ 	 */
+ 	bool interlace_allowed;
+ 	/**
++	 * @pre_enable_upstream_first: The bridge requires that the upstream
++	 * bridge @pre_enable function is called before its @pre_enable,
++	 * and conversely for post_disable. This is most frequently a
++	 * requirement for DSI devices which need the host to be initialised
++	 * before the peripheral.
++	 */
++	bool pre_enable_upstream_first;
++	/**
+ 	 * @ddc: Associated I2C adapter for DDC access, if any.
+ 	 */
+ 	struct i2c_adapter *ddc;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0763-drm-panel-Add-prepare_upstream_first-flag-to-drm_pan.patch b/target/linux/bcm27xx/patches-5.15/950-0763-drm-panel-Add-prepare_upstream_first-flag-to-drm_pan.patch
new file mode 100644
index 0000000000..0633e6080e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0763-drm-panel-Add-prepare_upstream_first-flag-to-drm_pan.patch
@@ -0,0 +1,48 @@
+From b5a2faf6deb6e7accec2c121840a72bdf6e97b4c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 23 Feb 2022 15:36:56 +0000
+Subject: [PATCH] drm/panel: Add prepare_upstream_first flag to
+ drm_panel
+
+Mapping to the drm_bridge flag pre_enable_upstream_first,
+add a new flag prepare_upstream_first to drm_panel to allow
+the panel driver to request that the upstream bridge should
+be pre_enabled before the panel prepare.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/bridge/panel.c |  3 +++
+ include/drm/drm_panel.h        | 10 ++++++++++
+ 2 files changed, 13 insertions(+)
+
+--- a/drivers/gpu/drm/bridge/panel.c
++++ b/drivers/gpu/drm/bridge/panel.c
+@@ -225,6 +225,9 @@ struct drm_bridge *drm_panel_bridge_add_
+ 	panel_bridge->bridge.ops = DRM_BRIDGE_OP_MODES;
+ 	panel_bridge->bridge.type = connector_type;
+ 
++	panel_bridge->bridge.pre_enable_upstream_first =
++						panel->prepare_upstream_first;
++
+ 	drm_bridge_add(&panel_bridge->bridge);
+ 
+ 	return &panel_bridge->bridge;
+--- a/include/drm/drm_panel.h
++++ b/include/drm/drm_panel.h
+@@ -179,6 +179,16 @@ struct drm_panel {
+ 	 * Panel entry in registry.
+ 	 */
+ 	struct list_head list;
++
++	/**
++	 * @prepare_upstream_first:
++	 *
++	 * The upstream controller should be prepared first, before the prepare
++	 * for the panel is called. This is largely required for DSI panels
++	 * where the DSI host controller should be initialised to LP-11 before
++	 * the panel is powered up.
++	 */
++	bool prepare_upstream_first;
+ };
+ 
+ void drm_panel_init(struct drm_panel *panel, struct device *dev,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0764-drm-Include-drm_connector.h-from-drm_panel.h.patch b/target/linux/bcm27xx/patches-5.15/950-0764-drm-Include-drm_connector.h-from-drm_panel.h.patch
new file mode 100644
index 0000000000..e7cb92a65f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0764-drm-Include-drm_connector.h-from-drm_panel.h.patch
@@ -0,0 +1,36 @@
+From de936b3ff2c593bf36fe67fff741e29ab91a8c4c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 11 Mar 2022 17:24:37 +0000
+Subject: [PATCH] drm: Include drm_connector.h from drm_panel.h
+
+drm_panel.h wants to reference enum drm_panel_orientation which is defined
+in drm_connector.h (despite the name).
+Include drm_connector.h in drm_panel.h to avoid the rare situation where
+drm_panel.h is used with drm_connector.h
+
+https://github.com/raspberrypi/linux/issues/4919
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ include/drm/drm_panel.h | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+--- a/include/drm/drm_panel.h
++++ b/include/drm/drm_panel.h
+@@ -24,6 +24,7 @@
+ #ifndef __DRM_PANEL_H__
+ #define __DRM_PANEL_H__
+ 
++#include <drm/drm_connector.h>
+ #include <linux/err.h>
+ #include <linux/errno.h>
+ #include <linux/list.h>
+@@ -35,8 +36,6 @@ struct drm_device;
+ struct drm_panel;
+ struct display_timing;
+ 
+-enum drm_panel_orientation;
+-
+ /**
+  * struct drm_panel_funcs - perform operations on a given panel
+  *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0765-drm-tc358762-Set-the-pre_enable_upstream_first-flag-.patch b/target/linux/bcm27xx/patches-5.15/950-0765-drm-tc358762-Set-the-pre_enable_upstream_first-flag-.patch
new file mode 100644
index 0000000000..10b1832169
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0765-drm-tc358762-Set-the-pre_enable_upstream_first-flag-.patch
@@ -0,0 +1,25 @@
+From 71e480a4426919d4110cd10fe5154eafee04fa96 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 16 Dec 2021 15:33:43 +0000
+Subject: [PATCH] drm/tc358762: Set the pre_enable_upstream_first flag
+ to configure DSI host
+
+TC358762 wants the DSI host to be prepared before it is powered up, so
+set the flag to request that the upstream bridges have their
+pre_enable called first.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/bridge/tc358762.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/bridge/tc358762.c
++++ b/drivers/gpu/drm/bridge/tc358762.c
+@@ -237,6 +237,7 @@ static int tc358762_probe(struct mipi_ds
+ 	ctx->bridge.funcs = &tc358762_bridge_funcs;
+ 	ctx->bridge.type = DRM_MODE_CONNECTOR_DPI;
+ 	ctx->bridge.of_node = dev->of_node;
++	ctx->bridge.pre_enable_upstream_first = true;
+ 
+ 	drm_bridge_add(&ctx->bridge);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0766-bcm2835-codec-dev-video31-as-interface-to-image_enco.patch b/target/linux/bcm27xx/patches-5.15/950-0766-bcm2835-codec-dev-video31-as-interface-to-image_enco.patch
new file mode 100644
index 0000000000..fab3445af7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0766-bcm2835-codec-dev-video31-as-interface-to-image_enco.patch
@@ -0,0 +1,799 @@
+From edd6ba8103e315dea54c1f1bdbf0562590e0acd8 Mon Sep 17 00:00:00 2001
+From: Maxim Devaev <mdevaev@gmail.com>
+Date: Thu, 3 Mar 2022 23:06:15 +0300
+Subject: [PATCH] bcm2835-codec: /dev/video31 as interface to
+ image_encode JPEG encoder
+
+Signed-off-by: Maxim Devaev <mdevaev@gmail.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 246 ++++++++++++------
+ .../vchiq-mmal/mmal-parameters.h              |   2 +
+ 2 files changed, 165 insertions(+), 83 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -62,6 +62,10 @@ static int deinterlace_video_nr = 18;
+ module_param(deinterlace_video_nr, int, 0644);
+ MODULE_PARM_DESC(deinterlace_video_nr, "deinterlace video device number");
+ 
++static int encode_image_nr = 31;
++module_param(encode_image_nr, int, 0644);
++MODULE_PARM_DESC(encode_image_nr, "encoder image device number");
++
+ /*
+  * Workaround for GStreamer v4l2convert component not considering Bayer formats
+  * as raw, and therefore not considering a V4L2 device that supports them as
+@@ -88,6 +92,7 @@ enum bcm2835_codec_role {
+ 	ENCODE,
+ 	ISP,
+ 	DEINTERLACE,
++	ENCODE_IMAGE,
+ 	NUM_ROLES
+ };
+ 
+@@ -96,6 +101,7 @@ static const char * const roles[] = {
+ 	"encode",
+ 	"isp",
+ 	"image_fx",
++	"encode_image",
+ };
+ 
+ static const char * const components[] = {
+@@ -103,6 +109,7 @@ static const char * const components[] =
+ 	"ril.video_encode",
+ 	"ril.isp",
+ 	"ril.image_fx",
++	"ril.image_encode",
+ };
+ 
+ /* Timeout for stop_streaming to allow all buffers to return */
+@@ -136,6 +143,8 @@ static const char * const components[] =
+  */
+ #define DEF_COMP_BUF_SIZE_GREATER_720P	(768 << 10)
+ #define DEF_COMP_BUF_SIZE_720P_OR_LESS	(512 << 10)
++/* JPEG image can be very large. For paranoid reasons 4MB is used */
++#define DEF_COMP_BUF_SIZE_JPEG (4096 << 10)
+ 
+ /* Flags that indicate a format can be used for capture/output */
+ #define MEM2MEM_CAPTURE		BIT(0)
+@@ -158,63 +167,63 @@ static const struct bcm2835_codec_fmt su
+ 		/* YUV formats */
+ 		.fourcc			= V4L2_PIX_FMT_YUV420,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 64, 64, 32 },
++		.bytesperline_align	= { 32, 64, 64, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_I420,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_YVU420,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 64, 64, 32 },
++		.bytesperline_align	= { 32, 64, 64, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_YV12,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_NV12,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_NV12,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_NV21,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_NV21,
+ 		.size_multiplier_x2	= 3,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_RGB565,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_RGB16,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_YUYV,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_YUYV,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_UYVY,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_UYVY,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_YVYU,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_YVYU,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_VYUY,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_VYUY,
+ 		.size_multiplier_x2	= 2,
+@@ -222,21 +231,21 @@ static const struct bcm2835_codec_fmt su
+ 		/* RGB formats */
+ 		.fourcc			= V4L2_PIX_FMT_RGB24,
+ 		.depth			= 24,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_RGB24,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_BGR24,
+ 		.depth			= 24,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BGR24,
+ 		.size_multiplier_x2	= 2,
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_BGR32,
+ 		.depth			= 32,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BGRA,
+ 		.size_multiplier_x2	= 2,
+@@ -252,7 +261,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 8 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB8,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB8,
+ 		.size_multiplier_x2	= 2,
+@@ -260,7 +269,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR8,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR8,
+ 		.size_multiplier_x2	= 2,
+@@ -268,7 +277,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG8,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG8,
+ 		.size_multiplier_x2	= 2,
+@@ -276,7 +285,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG8,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG8,
+ 		.size_multiplier_x2	= 2,
+@@ -285,7 +294,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB10P,
+ 		.size_multiplier_x2	= 2,
+@@ -293,7 +302,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR10P,
+ 		.size_multiplier_x2	= 2,
+@@ -301,7 +310,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG10P,
+ 		.size_multiplier_x2	= 2,
+@@ -309,7 +318,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG10P,
+ 		.size_multiplier_x2	= 2,
+@@ -318,7 +327,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB12P,
+ 		.size_multiplier_x2	= 2,
+@@ -326,7 +335,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR12P,
+ 		.size_multiplier_x2	= 2,
+@@ -334,7 +343,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG12P,
+ 		.size_multiplier_x2	= 2,
+@@ -342,7 +351,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG12P,
+ 		.size_multiplier_x2	= 2,
+@@ -351,7 +360,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB14P,
+ 		.size_multiplier_x2	= 2,
+@@ -359,7 +368,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR14P,
+ 		.size_multiplier_x2	= 2,
+@@ -368,7 +377,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG14P,
+ 		.size_multiplier_x2	= 2,
+@@ -376,7 +385,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG14P,
+ 		.size_multiplier_x2	= 2,
+@@ -385,7 +394,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 16 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB16,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB16,
+ 		.size_multiplier_x2	= 2,
+@@ -393,7 +402,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR16,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR16,
+ 		.size_multiplier_x2	= 2,
+@@ -401,7 +410,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG16,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG16,
+ 		.size_multiplier_x2	= 2,
+@@ -409,7 +418,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG16,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG16,
+ 		.size_multiplier_x2	= 2,
+@@ -419,7 +428,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB10,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB10,
+ 		.size_multiplier_x2	= 2,
+@@ -427,7 +436,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR10,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR10,
+ 		.size_multiplier_x2	= 2,
+@@ -435,7 +444,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG10,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG10,
+ 		.size_multiplier_x2	= 2,
+@@ -443,7 +452,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG10,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG10,
+ 		.size_multiplier_x2	= 2,
+@@ -452,7 +461,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB12,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB12,
+ 		.size_multiplier_x2	= 2,
+@@ -460,7 +469,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR12,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR12,
+ 		.size_multiplier_x2	= 2,
+@@ -468,7 +477,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG12,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG12,
+ 		.size_multiplier_x2	= 2,
+@@ -476,7 +485,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG12,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG12,
+ 		.size_multiplier_x2	= 2,
+@@ -485,7 +494,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit */
+ 		.fourcc			= V4L2_PIX_FMT_SRGGB14,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SRGGB14,
+ 		.size_multiplier_x2	= 2,
+@@ -493,7 +502,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SBGGR14,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SBGGR14,
+ 		.size_multiplier_x2	= 2,
+@@ -501,7 +510,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGRBG14,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGRBG14,
+ 		.size_multiplier_x2	= 2,
+@@ -509,7 +518,7 @@ static const struct bcm2835_codec_fmt su
+ 	}, {
+ 		.fourcc			= V4L2_PIX_FMT_SGBRG14,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_BAYER_SGBRG14,
+ 		.size_multiplier_x2	= 2,
+@@ -519,7 +528,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 8 bit */
+ 		.fourcc			= V4L2_PIX_FMT_GREY,
+ 		.depth			= 8,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_GREY,
+ 		.size_multiplier_x2	= 2,
+@@ -527,7 +536,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y10P,
+ 		.depth			= 10,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y10P,
+ 		.size_multiplier_x2	= 2,
+@@ -535,7 +544,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y12P,
+ 		.depth			= 12,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y12P,
+ 		.size_multiplier_x2	= 2,
+@@ -543,7 +552,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y14P,
+ 		.depth			= 14,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y14P,
+ 		.size_multiplier_x2	= 2,
+@@ -551,7 +560,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 16 bit */
+ 		.fourcc			= V4L2_PIX_FMT_Y16,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y16,
+ 		.size_multiplier_x2	= 2,
+@@ -559,7 +568,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 10 bit as 16bpp */
+ 		.fourcc			= V4L2_PIX_FMT_Y10,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y10,
+ 		.size_multiplier_x2	= 2,
+@@ -567,7 +576,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 12 bit as 16bpp */
+ 		.fourcc			= V4L2_PIX_FMT_Y12,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y12,
+ 		.size_multiplier_x2	= 2,
+@@ -575,7 +584,7 @@ static const struct bcm2835_codec_fmt su
+ 		/* 14 bit as 16bpp */
+ 		.fourcc			= V4L2_PIX_FMT_Y14,
+ 		.depth			= 16,
+-		.bytesperline_align	= { 32, 32, 32, 32 },
++		.bytesperline_align	= { 32, 32, 32, 32, 32 },
+ 		.flags			= 0,
+ 		.mmal_fmt		= MMAL_ENCODING_Y14,
+ 		.size_multiplier_x2	= 2,
+@@ -586,6 +595,11 @@ static const struct bcm2835_codec_fmt su
+ 		.flags			= V4L2_FMT_FLAG_COMPRESSED,
+ 		.mmal_fmt		= MMAL_ENCODING_H264,
+ 	}, {
++		.fourcc			= V4L2_PIX_FMT_JPEG,
++		.depth			= 0,
++		.flags			= V4L2_FMT_FLAG_COMPRESSED,
++		.mmal_fmt		= MMAL_ENCODING_JPEG,
++	}, {
+ 		.fourcc			= V4L2_PIX_FMT_MJPEG,
+ 		.depth			= 0,
+ 		.flags			= V4L2_FMT_FLAG_COMPRESSED,
+@@ -705,6 +719,7 @@ struct bcm2835_codec_driver {
+ 	struct bcm2835_codec_dev *decode;
+ 	struct bcm2835_codec_dev *isp;
+ 	struct bcm2835_codec_dev *deinterlace;
++	struct bcm2835_codec_dev *encode_image;
+ };
+ 
+ enum {
+@@ -838,6 +853,9 @@ static inline unsigned int get_sizeimage
+ 					 struct bcm2835_codec_fmt *fmt)
+ {
+ 	if (fmt->flags & V4L2_FMT_FLAG_COMPRESSED) {
++		if (fmt->fourcc == V4L2_PIX_FMT_JPEG)
++			return DEF_COMP_BUF_SIZE_JPEG;
++
+ 		if (width * height > 1280 * 720)
+ 			return DEF_COMP_BUF_SIZE_GREATER_720P;
+ 		else
+@@ -1422,12 +1440,12 @@ static int vidioc_try_fmt(struct bcm2835
+ 			f->fmt.pix_mp.height = MIN_H;
+ 
+ 		/*
+-		 * For decoders the buffer must have a vertical alignment of 16
+-		 * lines.
++		 * For decoders and image encoders the buffer must have
++		 * a vertical alignment of 16 lines.
+ 		 * The selection will reflect any cropping rectangle when only
+ 		 * some of the pixels are active.
+ 		 */
+-		if (ctx->dev->role == DECODE)
++		if (ctx->dev->role == DECODE || ctx->dev->role == ENCODE_IMAGE)
+ 			f->fmt.pix_mp.height = ALIGN(f->fmt.pix_mp.height, 16);
+ 	}
+ 	f->fmt.pix_mp.num_planes = 1;
+@@ -1573,12 +1591,13 @@ static int vidioc_s_fmt(struct bcm2835_c
+ 	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev,	"Calculated bpl as %u, size %u\n",
+ 		 q_data->bytesperline, q_data->sizeimage);
+ 
+-	if (ctx->dev->role == DECODE &&
++	if ((ctx->dev->role == DECODE || ctx->dev->role == ENCODE_IMAGE) &&
+ 	    q_data->fmt->flags & V4L2_FMT_FLAG_COMPRESSED &&
+ 	    q_data->crop_width && q_data->height) {
+ 		/*
+-		 * On the decoder, if provided with a resolution on the input
+-		 * side, then replicate that to the output side.
++		 * On the decoder or image encoder, if provided with
++		 * a resolution on the input side, then replicate that
++		 * to the output side.
+ 		 * GStreamer appears not to support V4L2_EVENT_SOURCE_CHANGE,
+ 		 * nor set up a resolution on the output side, therefore
+ 		 * we can't decode anything at a resolution other than the
+@@ -1719,7 +1738,7 @@ static int vidioc_g_selection(struct fil
+ 	switch (s->type) {
+ 	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ 		/* CAPTURE on encoder is not valid. */
+-		if (ctx->dev->role == ENCODE)
++		if (ctx->dev->role == ENCODE || ctx->dev->role == ENCODE_IMAGE)
+ 			return -EINVAL;
+ 		q_data = &ctx->q_data[V4L2_M2M_DST];
+ 		break;
+@@ -1762,6 +1781,7 @@ static int vidioc_g_selection(struct fil
+ 		}
+ 		break;
+ 	case ENCODE:
++	case ENCODE_IMAGE:
+ 		switch (s->target) {
+ 		case V4L2_SEL_TGT_CROP_DEFAULT:
+ 		case V4L2_SEL_TGT_CROP_BOUNDS:
+@@ -1846,7 +1866,7 @@ static int vidioc_s_selection(struct fil
+ 	switch (s->type) {
+ 	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ 		/* CAPTURE on encoder is not valid. */
+-		if (ctx->dev->role == ENCODE)
++		if (ctx->dev->role == ENCODE || ctx->dev->role == ENCODE_IMAGE)
+ 			return -EINVAL;
+ 		q_data = &ctx->q_data[V4L2_M2M_DST];
+ 		break;
+@@ -1882,6 +1902,7 @@ static int vidioc_s_selection(struct fil
+ 		}
+ 		break;
+ 	case ENCODE:
++	case ENCODE_IMAGE:
+ 		switch (s->target) {
+ 		case V4L2_SEL_TGT_CROP:
+ 			/* Only support crop from (0,0) */
+@@ -2266,6 +2287,16 @@ static int bcm2835_codec_s_ctrl(struct v
+ 						    sizeof(u32_value));
+ 		break;
+ 	}
++	case V4L2_CID_JPEG_COMPRESSION_QUALITY:
++		if (!ctx->component)
++			break;
++
++		ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						    &ctx->component->output[0],
++						    MMAL_PARAMETER_JPEG_Q_FACTOR,
++						    &ctrl->val,
++						    sizeof(ctrl->val));
++		break;
+ 
+ 	default:
+ 		v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
+@@ -2364,7 +2395,7 @@ static int vidioc_try_encoder_cmd(struct
+ {
+ 	struct bcm2835_codec_ctx *ctx = file2ctx(file);
+ 
+-	if (ctx->dev->role != ENCODE)
++	if (ctx->dev->role != ENCODE && ctx->dev->role != ENCODE_IMAGE)
+ 		return -EINVAL;
+ 
+ 	switch (cmd->cmd) {
+@@ -2567,6 +2598,20 @@ static int bcm2835_codec_create_componen
+ 					      MMAL_PARAMETER_IMAGE_EFFECT_PARAMETERS,
+ 					      &params,
+ 					      sizeof(params));
++
++	} else if (dev->role == ENCODE_IMAGE) {
++		enable = 0;
++		vchiq_mmal_port_parameter_set(dev->instance,
++					      &ctx->component->control,
++					      MMAL_PARAMETER_EXIF_DISABLE,
++					      &enable,
++					      sizeof(enable));
++		enable = 1;
++		vchiq_mmal_port_parameter_set(dev->instance,
++					      &ctx->component->output[0],
++						  MMAL_PARAMETER_JPEG_IJG_SCALING,
++					      &enable,
++					      sizeof(enable));
+ 	}
+ 
+ 	setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_SRC],
+@@ -2595,7 +2640,7 @@ static int bcm2835_codec_create_componen
+ 		goto destroy_component;
+ 	}
+ 
+-	if (dev->role == ENCODE) {
++	if (dev->role == ENCODE || dev->role == ENCODE_IMAGE) {
+ 		u32 param = 1;
+ 
+ 		if (ctx->q_data[V4L2_M2M_SRC].sizeimage <
+@@ -2604,27 +2649,29 @@ static int bcm2835_codec_create_componen
+ 				 ctx->q_data[V4L2_M2M_SRC].sizeimage,
+ 				 ctx->component->output[0].minimum_buffer.size);
+ 
+-		/* Enable SPS Timing header so framerate information is encoded
+-		 * in the H264 header.
+-		 */
+-		vchiq_mmal_port_parameter_set(ctx->dev->instance,
+-					      &ctx->component->output[0],
+-					      MMAL_PARAMETER_VIDEO_ENCODE_SPS_TIMING,
+-					      &param, sizeof(param));
+-
+-		/* Enable inserting headers into the first frame */
+-		vchiq_mmal_port_parameter_set(ctx->dev->instance,
+-					      &ctx->component->control,
+-					      MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
+-					      &param, sizeof(param));
+-		/*
+-		 * Avoid fragmenting the buffers over multiple frames (unless
+-		 * the frame is bigger than the whole buffer)
+-		 */
+-		vchiq_mmal_port_parameter_set(ctx->dev->instance,
+-					      &ctx->component->control,
+-					      MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
+-					      &param, sizeof(param));
++		if (dev->role == ENCODE) {
++			/* Enable SPS Timing header so framerate information is encoded
++			 * in the H264 header.
++			 */
++			vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						      &ctx->component->output[0],
++						      MMAL_PARAMETER_VIDEO_ENCODE_SPS_TIMING,
++						      &param, sizeof(param));
++
++			/* Enable inserting headers into the first frame */
++			vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						      &ctx->component->control,
++						      MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
++						      &param, sizeof(param));
++			/*
++			 * Avoid fragmenting the buffers over multiple frames (unless
++			 * the frame is bigger than the whole buffer)
++			 */
++			vchiq_mmal_port_parameter_set(ctx->dev->instance,
++						      &ctx->component->control,
++						      MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
++						      &param, sizeof(param));
++		}
+ 	} else {
+ 		if (ctx->q_data[V4L2_M2M_DST].sizeimage <
+ 			ctx->component->output[0].minimum_buffer.size)
+@@ -3248,6 +3295,23 @@ static int bcm2835_codec_open(struct fil
+ 		v4l2_ctrl_handler_init(hdl, 0);
+ 	}
+ 	break;
++	case ENCODE_IMAGE:
++	{
++		/* Encode image controls */
++		v4l2_ctrl_handler_init(hdl, 1);
++
++		v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
++				  V4L2_CID_JPEG_COMPRESSION_QUALITY,
++				  1, 100,
++				  1, 80);
++		if (hdl->error) {
++			rc = hdl->error;
++			goto free_ctrl_handler;
++		}
++		ctx->fh.ctrl_handler = hdl;
++		v4l2_ctrl_handler_setup(hdl);
++	}
++	break;
+ 	case NUM_ROLES:
+ 	break;
+ 	}
+@@ -3527,6 +3591,12 @@ static int bcm2835_codec_create(struct b
+ 		function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
+ 		video_nr = deinterlace_video_nr;
+ 		break;
++	case ENCODE_IMAGE:
++		v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
++		v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
++		function = MEDIA_ENT_F_PROC_VIDEO_ENCODER;
++		video_nr = encode_image_nr;
++		break;
+ 	default:
+ 		ret = -EINVAL;
+ 		goto unreg_dev;
+@@ -3626,6 +3696,10 @@ static int bcm2835_codec_probe(struct pl
+ 	if (ret)
+ 		goto out;
+ 
++	ret = bcm2835_codec_create(drv, &drv->encode_image, ENCODE_IMAGE);
++	if (ret)
++		goto out;
++
+ 	/* Register the media device node */
+ 	if (media_device_register(mdev) < 0)
+ 		goto out;
+@@ -3635,6 +3709,10 @@ static int bcm2835_codec_probe(struct pl
+ 	return 0;
+ 
+ out:
++	if (drv->encode_image) {
++		bcm2835_codec_destroy(drv->encode_image);
++		drv->encode_image = NULL;
++	}
+ 	if (drv->deinterlace) {
+ 		bcm2835_codec_destroy(drv->deinterlace);
+ 		drv->deinterlace = NULL;
+@@ -3660,6 +3738,8 @@ static int bcm2835_codec_remove(struct p
+ 
+ 	media_device_unregister(&drv->mdev);
+ 
++	bcm2835_codec_destroy(drv->encode_image);
++
+ 	bcm2835_codec_destroy(drv->deinterlace);
+ 
+ 	bcm2835_codec_destroy(drv->isp);
+--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
++++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+@@ -279,6 +279,8 @@ enum mmal_parameter_camera_type {
+ 	MMAL_PARAMETER_GAMMA,
+ 		/**< Takes a @ref MMAL_PARAMETER_CDN_T */
+ 	MMAL_PARAMETER_CDN,
++		/**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
++	MMAL_PARAMETER_JPEG_IJG_SCALING,
+ };
+ 
+ struct mmal_parameter_rational {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0767-media-entity-Skip-non-data-links-in-graph-iteration.patch b/target/linux/bcm27xx/patches-5.15/950-0767-media-entity-Skip-non-data-links-in-graph-iteration.patch
new file mode 100644
index 0000000000..a99a529831
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0767-media-entity-Skip-non-data-links-in-graph-iteration.patch
@@ -0,0 +1,29 @@
+From 74a4bd2caa37f07786cdf3e86ad9f7cbc6977b31 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Wed, 2 Mar 2022 22:03:00 +0000
+Subject: [PATCH] media: entity: Skip non-data links in graph iteration
+
+When iterating over the media graph, don't follow links that are not
+data links.
+
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/mc/mc-entity.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/media/mc/mc-entity.c
++++ b/drivers/media/mc/mc-entity.c
+@@ -313,6 +313,12 @@ static void media_graph_walk_iter(struct
+ 
+ 	link = list_entry(link_top(graph), typeof(*link), list);
+ 
++	/* If the link is not a data link, don't follow it */
++	if ((link->flags & MEDIA_LNK_FL_LINK_TYPE) != MEDIA_LNK_FL_DATA_LINK) {
++		link_top(graph) = link_top(graph)->next;
++		return;
++	}
++
+ 	/* The link is not enabled so we do not follow. */
+ 	if (!(link->flags & MEDIA_LNK_FL_ENABLED)) {
+ 		link_top(graph) = link_top(graph)->next;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0768-media-media.h-Add-new-media-link-type.patch b/target/linux/bcm27xx/patches-5.15/950-0768-media-media.h-Add-new-media-link-type.patch
new file mode 100644
index 0000000000..ce92c3a312
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0768-media-media.h-Add-new-media-link-type.patch
@@ -0,0 +1,74 @@
+From 895e81564296a55a0691066a1931fd38a0139f63 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Wed, 2 Mar 2022 22:03:01 +0000
+Subject: [PATCH] media: media.h: Add new media link type
+
+To describe in the kernel the connection between devices and their
+supporting peripherals (for example, a camera sensor and the vcm
+driving the focusing lens for it), add a new type of media link
+to introduce the concept of these ancillary links.
+
+Add some elements to the uAPI documentation to explain the new link
+type, their purpose and some aspects of their current implementation.
+
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ .../media/mediactl/media-controller-model.rst   |  6 ++++++
+ .../media/mediactl/media-types.rst              | 17 ++++++++++++-----
+ include/uapi/linux/media.h                      |  1 +
+ 3 files changed, 19 insertions(+), 5 deletions(-)
+
+--- a/Documentation/userspace-api/media/mediactl/media-controller-model.rst
++++ b/Documentation/userspace-api/media/mediactl/media-controller-model.rst
+@@ -33,3 +33,9 @@ are:
+ 
+ -  An **interface link** is a point-to-point bidirectional control
+    connection between a Linux Kernel interface and an entity.
++
++- An **ancillary link** is a point-to-point connection denoting that two
++  entities form a single logical unit. For example this could represent the
++  fact that a particular camera sensor and lens controller form a single
++  physical module, meaning this lens controller drives the lens for this
++  camera sensor.
+\ No newline at end of file
+--- a/Documentation/userspace-api/media/mediactl/media-types.rst
++++ b/Documentation/userspace-api/media/mediactl/media-types.rst
+@@ -412,14 +412,21 @@ must be set for every pad.
+ 	  is set by drivers and is read-only for applications.
+ 
+     *  -  ``MEDIA_LNK_FL_LINK_TYPE``
+-       -  This is a bitmask that defines the type of the link. Currently,
+-	  two types of links are supported:
++       -  This is a bitmask that defines the type of the link. The following
++	  link types are currently supported:
+ 
+ 	  .. _MEDIA-LNK-FL-DATA-LINK:
+ 
+-	  ``MEDIA_LNK_FL_DATA_LINK`` if the link is between two pads
++	  ``MEDIA_LNK_FL_DATA_LINK`` for links that represent a data connection
++     between two pads.
+ 
+ 	  .. _MEDIA-LNK-FL-INTERFACE-LINK:
+ 
+-	  ``MEDIA_LNK_FL_INTERFACE_LINK`` if the link is between an
+-	  interface and an entity
++	  ``MEDIA_LNK_FL_INTERFACE_LINK`` for links that associate an entity to its
++     interface.
++
++	  .. _MEDIA-LNK-FL-ANCILLARY-LINK:
++
++	  ``MEDIA_LNK_FL_ANCILLARY_LINK`` for links that represent a physical
++     relationship between two entities. The link may or may not be ummutable, so
++     applications must not assume either case.
+\ No newline at end of file
+--- a/include/uapi/linux/media.h
++++ b/include/uapi/linux/media.h
+@@ -226,6 +226,7 @@ struct media_pad_desc {
+ #define MEDIA_LNK_FL_LINK_TYPE			(0xf << 28)
+ #  define MEDIA_LNK_FL_DATA_LINK		(0 << 28)
+ #  define MEDIA_LNK_FL_INTERFACE_LINK		(1 << 28)
++#  define MEDIA_LNK_FL_ANCILLARY_LINK		(2 << 28)
+ 
+ struct media_link_desc {
+ 	struct media_pad_desc source;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0769-media-entity-Add-link_type_name-helper.patch b/target/linux/bcm27xx/patches-5.15/950-0769-media-entity-Add-link_type_name-helper.patch
new file mode 100644
index 0000000000..6191b2acd8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0769-media-entity-Add-link_type_name-helper.patch
@@ -0,0 +1,49 @@
+From 7fd3f647f18b808effb3a8d514f9b49c5c9b6d9e Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Wed, 2 Mar 2022 22:03:02 +0000
+Subject: [PATCH] media: entity: Add link_type_name() helper
+
+Now we have three types of media link, printing the right name during
+debug output is slightly more complicated. Add a helper function to
+make it easier.
+
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/mc/mc-entity.c | 18 +++++++++++++++---
+ 1 file changed, 15 insertions(+), 3 deletions(-)
+
+--- a/drivers/media/mc/mc-entity.c
++++ b/drivers/media/mc/mc-entity.c
+@@ -60,6 +60,20 @@ static inline const char *intf_type(stru
+ 	}
+ };
+ 
++static inline const char *link_type_name(struct media_link *link)
++{
++	switch (link->flags & MEDIA_LNK_FL_LINK_TYPE) {
++	case MEDIA_LNK_FL_DATA_LINK:
++		return "data";
++	case MEDIA_LNK_FL_INTERFACE_LINK:
++		return "interface";
++	case MEDIA_LNK_FL_ANCILLARY_LINK:
++		return "ancillary";
++	default:
++		return "unknown";
++	}
++}
++
+ __must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum,
+ 					  int idx_max)
+ {
+@@ -107,9 +121,7 @@ static void dev_dbg_obj(const char *even
+ 
+ 		dev_dbg(gobj->mdev->dev,
+ 			"%s id %u: %s link id %u ==> id %u\n",
+-			event_name, media_id(gobj),
+-			media_type(link->gobj0) == MEDIA_GRAPH_PAD ?
+-				"data" : "interface",
++			event_name, media_id(gobj), link_type_name(link),
+ 			media_id(link->gobj0),
+ 			media_id(link->gobj1));
+ 		break;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0770-media-entity-Add-support-for-ancillary-links.patch b/target/linux/bcm27xx/patches-5.15/950-0770-media-entity-Add-support-for-ancillary-links.patch
new file mode 100644
index 0000000000..aaf1177292
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0770-media-entity-Add-support-for-ancillary-links.patch
@@ -0,0 +1,69 @@
+From f07c6a12bf8b432e70d312ab60b0a07197fa8162 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Wed, 2 Mar 2022 22:03:03 +0000
+Subject: [PATCH] media: entity: Add support for ancillary links
+
+Add functions to create ancillary links, so that they don't need to
+be manually created by users.
+
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/mc/mc-entity.c | 22 ++++++++++++++++++++++
+ include/media/media-entity.h | 19 +++++++++++++++++++
+ 2 files changed, 41 insertions(+)
+
+--- a/drivers/media/mc/mc-entity.c
++++ b/drivers/media/mc/mc-entity.c
+@@ -1050,3 +1050,25 @@ void media_remove_intf_links(struct medi
+ 	mutex_unlock(&mdev->graph_mutex);
+ }
+ EXPORT_SYMBOL_GPL(media_remove_intf_links);
++
++struct media_link *media_create_ancillary_link(struct media_entity *primary,
++					       struct media_entity *ancillary)
++{
++	struct media_link *link;
++
++	link = media_add_link(&primary->links);
++	if (!link)
++		return ERR_PTR(-ENOMEM);
++
++	link->gobj0 = &primary->graph_obj;
++	link->gobj1 = &ancillary->graph_obj;
++	link->flags = MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED |
++		      MEDIA_LNK_FL_ANCILLARY_LINK;
++
++	/* Initialize graph object embedded in the new link */
++	media_gobj_create(primary->graph_obj.mdev, MEDIA_GRAPH_LINK,
++			  &link->graph_obj);
++
++	return link;
++}
++EXPORT_SYMBOL_GPL(media_create_ancillary_link);
+--- a/include/media/media-entity.h
++++ b/include/media/media-entity.h
+@@ -1107,4 +1107,23 @@ void media_remove_intf_links(struct medi
+ 	(((entity)->ops && (entity)->ops->operation) ?			\
+ 	 (entity)->ops->operation((entity) , ##args) : -ENOIOCTLCMD)
+ 
++/**
++ * media_create_ancillary_link() - create an ancillary link between two
++ *				   instances of &media_entity
++ *
++ * @primary:	pointer to the primary &media_entity
++ * @ancillary:	pointer to the ancillary &media_entity
++ *
++ * Create an ancillary link between two entities, indicating that they
++ * represent two connected pieces of hardware that form a single logical unit.
++ * A typical example is a camera lens controller being linked to the sensor that
++ * it is supporting.
++ *
++ * The function sets both MEDIA_LNK_FL_ENABLED and MEDIA_LNK_FL_IMMUTABLE for
++ * the new link.
++ */
++struct media_link *
++media_create_ancillary_link(struct media_entity *primary,
++			    struct media_entity *ancillary);
++
+ #endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0771-media-v4l2-async-Create-links-during-v4l2_async_matc.patch b/target/linux/bcm27xx/patches-5.15/950-0771-media-v4l2-async-Create-links-during-v4l2_async_matc.patch
new file mode 100644
index 0000000000..b18188c2d9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0771-media-v4l2-async-Create-links-during-v4l2_async_matc.patch
@@ -0,0 +1,67 @@
+From 3f32e8b803061cf04a1fe31a3070e46fd0d379e8 Mon Sep 17 00:00:00 2001
+From: Daniel Scally <djrscally@gmail.com>
+Date: Wed, 2 Mar 2022 22:03:04 +0000
+Subject: [PATCH] media: v4l2-async: Create links during
+ v4l2_async_match_notify()
+
+Upon an async fwnode match, there's some typical behaviour that the
+notifier and matching subdev will want to do. For example, a notifier
+representing a sensor matching to an async subdev representing its
+VCM will want to create an ancillary link to expose that relationship
+to userspace.
+
+To avoid lots of code in individual drivers, try to build these links
+within v4l2 core.
+
+Signed-off-by: Daniel Scally <djrscally@gmail.com>
+---
+ drivers/media/v4l2-core/v4l2-async.c | 31 ++++++++++++++++++++++++++++
+ 1 file changed, 31 insertions(+)
+
+--- a/drivers/media/v4l2-core/v4l2-async.c
++++ b/drivers/media/v4l2-core/v4l2-async.c
+@@ -275,6 +275,24 @@ v4l2_async_notifier_try_complete(struct
+ static int
+ v4l2_async_notifier_try_all_subdevs(struct v4l2_async_notifier *notifier);
+ 
++static int v4l2_async_create_ancillary_links(struct v4l2_async_notifier *n,
++					     struct v4l2_subdev *sd)
++{
++	struct media_link *link = NULL;
++
++#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
++
++	if (sd->entity.function != MEDIA_ENT_F_LENS &&
++	    sd->entity.function != MEDIA_ENT_F_FLASH)
++		return 0;
++
++	link = media_create_ancillary_link(&n->sd->entity, &sd->entity);
++
++#endif
++
++	return IS_ERR(link) ? PTR_ERR(link) : 0;
++}
++
+ static int v4l2_async_match_notify(struct v4l2_async_notifier *notifier,
+ 				   struct v4l2_device *v4l2_dev,
+ 				   struct v4l2_subdev *sd,
+@@ -292,6 +310,19 @@ static int v4l2_async_match_notify(struc
+ 		v4l2_device_unregister_subdev(sd);
+ 		return ret;
+ 	}
++
++	/*
++	 * Depending of the function of the entities involved, we may want to
++	 * create links between them (for example between a sensor and its lens
++	 * or between a sensor's source pad and the connected device's sink
++	 * pad).
++	 */
++	ret = v4l2_async_create_ancillary_links(notifier, sd);
++	if (ret) {
++		v4l2_async_notifier_call_unbind(notifier, sd, asd);
++		v4l2_device_unregister_subdev(sd);
++		return ret;
++	}
+ 
+ 	/* Remove from the waiting list */
+ 	list_del(&asd->list);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0772-dt-bindings-media-i2c-Add-binding-for-ad5398-VCM.patch b/target/linux/bcm27xx/patches-5.15/950-0772-dt-bindings-media-i2c-Add-binding-for-ad5398-VCM.patch
new file mode 100644
index 0000000000..7246863b67
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0772-dt-bindings-media-i2c-Add-binding-for-ad5398-VCM.patch
@@ -0,0 +1,39 @@
+From 135a74ae1814a1ae310d2f1faa19efe06bbfa964 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 29 Sep 2021 12:33:35 +0100
+Subject: [PATCH] dt-bindings: media: i2c: Add binding for ad5398 VCM
+
+Add a binding for Analog Devices AD5398 10bit current
+sinking DAC when used as a lens VCM driver.
+
+FIXME: Convert to YAML
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../devicetree/bindings/media/i2c/ad5398.txt  | 20 +++++++++++++++++++
+ 1 file changed, 20 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/i2c/ad5398.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/i2c/ad5398.txt
+@@ -0,0 +1,20 @@
++* Analog Devices AD5398 autofocus coil
++
++Required Properties:
++
++  - compatible: Must contain one of:
++		- "adi,ad5398"
++
++  - reg: I2C slave address
++
++  - VANA-supply: supply of voltage for VANA pin
++
++Example:
++
++       ad5398: coil@c {
++               compatible = "adi,ad5398";
++               reg = <0x0c>;
++
++               VANA-supply = <&vaux4>;
++       };
++
diff --git a/target/linux/bcm27xx/patches-5.15/950-0773-media-i2c-Add-driver-for-AD5398-VCM-lens-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0773-media-i2c-Add-driver-for-AD5398-VCM-lens-driver.patch
new file mode 100644
index 0000000000..21dcf6984c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0773-media-i2c-Add-driver-for-AD5398-VCM-lens-driver.patch
@@ -0,0 +1,388 @@
+From 838b1d352c8b7a8380fc2f00c42948e8307f51de Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 29 Sep 2021 14:04:28 +0100
+Subject: [PATCH] media: i2c: Add driver for AD5398 VCM lens driver
+
+Adds a driver for the Analog Devices AD5398 10 bit
+I2C DAC which is commonly used for driving VCM lens
+mechanisms.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/Kconfig  |   7 +
+ drivers/media/i2c/Makefile |   1 +
+ drivers/media/i2c/ad5398.c | 342 +++++++++++++++++++++++++++++++++++++
+ 3 files changed, 350 insertions(+)
+ create mode 100644 drivers/media/i2c/ad5398.c
+
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -1451,6 +1451,13 @@ endmenu
+ menu "Lens drivers"
+ 	visible if MEDIA_CAMERA_SUPPORT
+ 
++config VIDEO_AD5398
++	tristate "AD5398 lens voice coil support"
++	depends on GPIOLIB && I2C && VIDEO_V4L2
++	select MEDIA_CONTROLLER
++	help
++	  This is a driver for the AD5398 camera lens voice coil.
++
+ config VIDEO_AD5820
+ 	tristate "AD5820 lens voice coil support"
+ 	depends on GPIOLIB && I2C && VIDEO_V4L2
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -21,6 +21,7 @@ obj-$(CONFIG_VIDEO_SAA717X) += saa717x.o
+ obj-$(CONFIG_VIDEO_SAA7127) += saa7127.o
+ obj-$(CONFIG_VIDEO_SAA7185) += saa7185.o
+ obj-$(CONFIG_VIDEO_SAA6752HS) += saa6752hs.o
++obj-$(CONFIG_VIDEO_AD5398)  += ad5398.o
+ obj-$(CONFIG_VIDEO_AD5820)  += ad5820.o
+ obj-$(CONFIG_VIDEO_AK7375)  += ak7375.o
+ obj-$(CONFIG_VIDEO_DW9714)  += dw9714.o
+--- /dev/null
++++ b/drivers/media/i2c/ad5398.c
+@@ -0,0 +1,342 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * AD5398 DAC driver for camera voice coil focus.
++ * Copyright (C) 2021 Raspberry Pi (Trading) Ltd.
++ *
++ * Based on AD5820 DAC driver by Nokia and TI.
++ *
++ * This driver uses the regulator framework notification hooks on the
++ * assumption that the VCM and sensor share a regulator. This means the VCM
++ * position will be restored when either the sensor or VCM subdevices are opened
++ * or powered up. The client can therefore choose to ignore the VCM subdevice,
++ * and the lens position will be as previously requested. Without that, there
++ * is a hard requirement to have the VCM subdevice open in order for the VCM
++ * to be powered and at the requested position.
++ */
++
++#include <linux/errno.h>
++#include <linux/i2c.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/regulator/consumer.h>
++#include <linux/gpio/consumer.h>
++
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-subdev.h>
++
++/* Register definitions */
++#define AD5398_POWER_DOWN		BIT(15)
++#define AD5398_DAC_SHIFT		4
++
++#define to_ad5398_device(sd)	container_of(sd, struct ad5398_device, subdev)
++
++struct ad5398_device {
++	struct v4l2_subdev subdev;
++	struct ad5398_platform_data *platform_data;
++	struct regulator *vana;
++	struct notifier_block nb;
++
++	struct v4l2_ctrl_handler ctrls;
++	u32 focus_absolute;
++
++	bool standby;
++};
++
++static int ad5398_write(struct ad5398_device *coil, u16 data)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&coil->subdev);
++	struct i2c_msg msg;
++	__be16 be_data;
++	int r;
++
++	if (!client->adapter)
++		return -ENODEV;
++
++	be_data = cpu_to_be16(data);
++	msg.addr  = client->addr;
++	msg.flags = 0;
++	msg.len   = 2;
++	msg.buf   = (u8 *)&be_data;
++
++	r = i2c_transfer(client->adapter, &msg, 1);
++	if (r < 0) {
++		dev_err(&client->dev, "write failed, error %d\n", r);
++		return r;
++	}
++
++	return 0;
++}
++
++/*
++ * Calculate status word and write it to the device based on current
++ * values of V4L2 controls. It is assumed that the stored V4L2 control
++ * values are properly limited and rounded.
++ */
++static int ad5398_update_hw(struct ad5398_device *coil)
++{
++	u16 status;
++
++	status = coil->focus_absolute << AD5398_DAC_SHIFT;
++
++	if (coil->standby)
++		status |= AD5398_POWER_DOWN;
++
++	return ad5398_write(coil, status);
++}
++
++/*
++ * Power handling
++ */
++static int ad5398_power_off(struct ad5398_device *coil)
++{
++	int ret = 0;
++
++	coil->standby = true;
++	ret = ad5398_update_hw(coil);
++
++	return ret;
++}
++
++static int ad5398_power_on(struct ad5398_device *coil)
++{
++	int ret;
++
++	/* Restore the hardware settings. */
++	coil->standby = false;
++	ret = ad5398_update_hw(coil);
++	if (ret)
++		goto fail;
++
++	return 0;
++
++fail:
++	coil->standby = true;
++
++	return ret;
++}
++
++/*
++ * V4L2 controls
++ */
++static int ad5398_set_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct ad5398_device *coil =
++		container_of(ctrl->handler, struct ad5398_device, ctrls);
++
++	switch (ctrl->id) {
++	case V4L2_CID_FOCUS_ABSOLUTE:
++		coil->focus_absolute = ctrl->val;
++		return ad5398_update_hw(coil);
++	}
++
++	return 0;
++}
++
++static const struct v4l2_ctrl_ops ad5398_ctrl_ops = {
++	.s_ctrl = ad5398_set_ctrl,
++};
++
++static int ad5398_init_controls(struct ad5398_device *coil)
++{
++	v4l2_ctrl_handler_init(&coil->ctrls, 1);
++
++	/*
++	 * V4L2_CID_FOCUS_ABSOLUTE
++	 *
++	 * Minimum current is 0 mA, maximum is 120 mA. Thus, 1 code is
++	 * equivalent to 120/1023 = 0.1173 mA. Nevertheless, we do not use [mA]
++	 * for focus position, because it is meaningless for user. Meaningful
++	 * would be to use focus distance or even its inverse, but since the
++	 * driver doesn't have sufficient knowledge to do the conversion, we
++	 * will just use abstract codes here. In any case, smaller value = focus
++	 * position farther from camera. The default zero value means focus at
++	 * infinity, and also least current consumption.
++	 */
++	v4l2_ctrl_new_std(&coil->ctrls, &ad5398_ctrl_ops,
++			  V4L2_CID_FOCUS_ABSOLUTE, 0, 1023, 1, 0);
++
++	if (coil->ctrls.error)
++		return coil->ctrls.error;
++
++	coil->focus_absolute = 0;
++
++	coil->subdev.ctrl_handler = &coil->ctrls;
++
++	return 0;
++}
++
++/*
++ * V4L2 subdev operations
++ */
++static int ad5398_registered(struct v4l2_subdev *subdev)
++{
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	return ad5398_init_controls(coil);
++}
++
++static int
++ad5398_set_power(struct v4l2_subdev *subdev, int on)
++{
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++	int ret;
++
++	if (on)
++		ret = regulator_enable(coil->vana);
++	else
++		ret = regulator_disable(coil->vana);
++
++	return ret;
++}
++
++static int ad5398_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct ad5398_device *coil = to_ad5398_device(sd);
++
++	return regulator_enable(coil->vana);
++}
++
++static int ad5398_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct ad5398_device *coil = to_ad5398_device(sd);
++
++	return regulator_disable(coil->vana);
++}
++
++static const struct v4l2_subdev_core_ops ad5398_core_ops = {
++	.s_power = ad5398_set_power,
++};
++
++static const struct v4l2_subdev_ops ad5398_ops = {
++	.core = &ad5398_core_ops,
++};
++
++static const struct v4l2_subdev_internal_ops ad5398_internal_ops = {
++	.registered = ad5398_registered,
++	.open = ad5398_open,
++	.close = ad5398_close,
++};
++
++/*
++ * I2C driver
++ */
++static int __maybe_unused ad5398_suspend(struct device *dev)
++{
++	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
++	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	return regulator_enable(coil->vana);
++}
++
++static int __maybe_unused ad5398_resume(struct device *dev)
++{
++	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
++	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	return regulator_disable(coil->vana);
++}
++
++static int ad5398_regulator_notifier(struct notifier_block *nb,
++				     unsigned long event,
++				     void *ignored)
++{
++	struct ad5398_device *coil = container_of(nb, struct ad5398_device, nb);
++
++	if (event == REGULATOR_EVENT_ENABLE)
++		ad5398_power_on(coil);
++	else if (event == REGULATOR_EVENT_PRE_DISABLE)
++		ad5398_power_off(coil);
++
++	return NOTIFY_OK;
++}
++
++static int ad5398_probe(struct i2c_client *client,
++			const struct i2c_device_id *devid)
++{
++	struct ad5398_device *coil;
++	int ret;
++
++	coil = devm_kzalloc(&client->dev, sizeof(*coil), GFP_KERNEL);
++	if (!coil)
++		return -ENOMEM;
++
++	coil->vana = devm_regulator_get(&client->dev, "VANA");
++	if (IS_ERR(coil->vana)) {
++		ret = PTR_ERR(coil->vana);
++		if (ret != -EPROBE_DEFER)
++			dev_err(&client->dev, "could not get regulator for vana\n");
++		return ret;
++	}
++
++	v4l2_i2c_subdev_init(&coil->subdev, client, &ad5398_ops);
++	coil->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
++	coil->subdev.internal_ops = &ad5398_internal_ops;
++	coil->subdev.entity.function = MEDIA_ENT_F_LENS;
++	strscpy(coil->subdev.name, "ad5398 focus", sizeof(coil->subdev.name));
++
++	coil->nb.notifier_call = &ad5398_regulator_notifier;
++	ret = regulator_register_notifier(coil->vana, &coil->nb);
++	if (ret < 0)
++		return ret;
++
++	ret = media_entity_pads_init(&coil->subdev.entity, 0, NULL);
++	if (ret < 0)
++		goto cleanup2;
++
++	ret = v4l2_async_register_subdev(&coil->subdev);
++	if (ret < 0)
++		goto cleanup;
++
++	return ret;
++
++cleanup:
++	media_entity_cleanup(&coil->subdev.entity);
++cleanup2:
++	regulator_unregister_notifier(coil->vana, &coil->nb);
++	return ret;
++}
++
++static int ad5398_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	v4l2_async_unregister_subdev(&coil->subdev);
++	v4l2_ctrl_handler_free(&coil->ctrls);
++	media_entity_cleanup(&coil->subdev.entity);
++	return 0;
++}
++
++static const struct i2c_device_id ad5398_id_table[] = {
++	{ "ad5398", 0 },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, ad5398_id_table);
++
++static const struct of_device_id ad5398_of_table[] = {
++	{ .compatible = "adi,ad5398" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, ad5398_of_table);
++
++static SIMPLE_DEV_PM_OPS(ad5398_pm, ad5398_suspend, ad5398_resume);
++
++static struct i2c_driver ad5398_i2c_driver = {
++	.driver		= {
++		.name	= "ad5398",
++		.pm	= &ad5398_pm,
++		.of_match_table = ad5398_of_table,
++	},
++	.probe		= ad5398_probe,
++	.remove		= ad5398_remove,
++	.id_table	= ad5398_id_table,
++};
++
++module_i2c_driver(ad5398_i2c_driver);
++
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
++MODULE_DESCRIPTION("AD5398 camera lens driver");
++MODULE_LICENSE("GPL");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0774-media-i2c-ov5647-Use-v4l2_async_register_subdev_sens.patch b/target/linux/bcm27xx/patches-5.15/950-0774-media-i2c-ov5647-Use-v4l2_async_register_subdev_sens.patch
new file mode 100644
index 0000000000..142eb4c03e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0774-media-i2c-ov5647-Use-v4l2_async_register_subdev_sens.patch
@@ -0,0 +1,26 @@
+From de9e04eba5f804c464fdfd4c21eadaf22c285156 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 16 Mar 2022 12:15:41 +0000
+Subject: [PATCH] media: i2c: ov5647: Use
+ v4l2_async_register_subdev_sensor for lens binding
+
+v4l2_async_register_subdev doesn't bind in lens or flash drivers,
+but v4l2_async_register_subdev_sensor does.
+Switch to using v4l2_async_register_subdev_sensor.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/ov5647.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/ov5647.c
++++ b/drivers/media/i2c/ov5647.c
+@@ -1558,7 +1558,7 @@ static int ov5647_probe(struct i2c_clien
+ 	if (ret < 0)
+ 		goto power_off;
+ 
+-	ret = v4l2_async_register_subdev(sd);
++	ret = v4l2_async_register_subdev_sensor(sd);
+ 	if (ret < 0)
+ 		goto power_off;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0775-dtoverlays-Add-VCM-option-to-imx219.patch b/target/linux/bcm27xx/patches-5.15/950-0775-dtoverlays-Add-VCM-option-to-imx219.patch
new file mode 100644
index 0000000000..429b2bb2ea
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0775-dtoverlays-Add-VCM-option-to-imx219.patch
@@ -0,0 +1,48 @@
+From e6caf0202a5618e9f5a174c2ee4465ed2b44ea9e Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 11 Mar 2022 15:32:00 +0000
+Subject: [PATCH] dtoverlays: Add VCM option to imx219
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             |  1 +
+ arch/arm/boot/dts/overlays/imx219-overlay.dts | 12 +++++++++++-
+ 2 files changed, 12 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1869,6 +1869,7 @@ Params: rotation                Mounting
+                                 configuring the sensor (default on)
+         cam0                    Adopt the default configuration for CAM0 on a
+                                 Compute Module (CSI0, i2c_vc, and cam0_reg).
++        vcm                     Configure a VCM focus drive on the sensor.
+ 
+ 
+ Name:   imx290
+--- a/arch/arm/boot/dts/overlays/imx219-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+@@ -63,6 +63,13 @@
+ 					};
+ 				};
+ 			};
++
++			vcm: ad5398@0c {
++				compatible = "adi,ad5398";
++				reg = <0x0c>;
++				status = "disabled";
++				VANA-supply = <&cam1_reg>;
++			};
+ 		};
+ 	};
+ 
+@@ -91,6 +98,9 @@
+ 		       <&csi_frag>, "target:0=",<&csi0>,
+ 		       <&clk_frag>, "target:0=",<&cam0_clk>,
+ 		       <&imx219>, "clocks:0=",<&cam0_clk>,
+-		       <&imx219>, "VANA-supply:0=",<&cam0_reg>;
++		       <&imx219>, "VANA-supply:0=",<&cam0_reg>,
++		       <&vcm>, "VANA-supply:0=", <&cam0_reg>;
++		vcm = <&vcm>, "status=okay",
++		      <&imx219>,"lens-focus:0=", <&vcm>;
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0776-dtoverlay-Add-VCM-option-to-ov5647-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0776-dtoverlay-Add-VCM-option-to-ov5647-overlay.patch
new file mode 100644
index 0000000000..65c1d9a49f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0776-dtoverlay-Add-VCM-option-to-ov5647-overlay.patch
@@ -0,0 +1,45 @@
+From 654784fd3a33bb9407d7c5edd1f7cf89038049df Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Mar 2022 18:36:10 +0000
+Subject: [PATCH] dtoverlay: Add VCM option to ov5647 overlay
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             | 1 +
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts | 9 +++++++++
+ 2 files changed, 10 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2450,6 +2450,7 @@ Params: rotation                Mounting
+                                 configuring the sensor (default on)
+         cam0                    Adopt the default configuration for CAM0 on a
+                                 Compute Module (CSI0, i2c_vc, and cam0_reg).
++        vcm                     Configure a VCM focus drive on the sensor.
+ 
+ 
+ Name:   ov7251
+--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -38,6 +38,13 @@
+ 					};
+ 				};
+ 			};
++
++			vcm: ad5398@0c {
++				compatible = "adi,ad5398";
++				reg = <0x0c>;
++				status = "disabled";
++				VANA-supply = <&cam1_reg>;
++			};
+ 		};
+ 	};
+ 
+@@ -95,5 +102,7 @@
+ 		       <&clk_frag>, "target:0=",<&cam0_clk>,
+ 		       <&ov5647>, "clocks:0=",<&cam0_clk>,
+ 		       <&ov5647>, "avdd-supply:0=",<&cam0_reg>;
++		vcm = <&vcm>, "status=okay",
++		      <&ov5647>,"lens-focus:0=", <&vcm>;
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0777-media-i2c-Rename-ad5398-to-ad5398_vcm.patch b/target/linux/bcm27xx/patches-5.15/950-0777-media-i2c-Rename-ad5398-to-ad5398_vcm.patch
new file mode 100644
index 0000000000..d05217c56d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0777-media-i2c-Rename-ad5398-to-ad5398_vcm.patch
@@ -0,0 +1,719 @@
+From 31bcdc66bb6bb5ae9b700693786a5ab46231484c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 17 Mar 2022 15:13:10 +0000
+Subject: [PATCH] media: i2c: Rename ad5398 to ad5398_vcm
+
+There's already a regulator module called ad5398 that exposes
+this device through the regulator API. That is meaningless in
+the terms that it uses and how it maps to V4L2, so a new driver
+was added. However the module name collision wasn't noted, so
+rename it now.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/Makefile                   | 2 +-
+ drivers/media/i2c/{ad5398.c => ad5398_vcm.c} | 0
+ 2 files changed, 1 insertion(+), 1 deletion(-)
+ rename drivers/media/i2c/{ad5398.c => ad5398_vcm.c} (100%)
+
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -21,7 +21,7 @@ obj-$(CONFIG_VIDEO_SAA717X) += saa717x.o
+ obj-$(CONFIG_VIDEO_SAA7127) += saa7127.o
+ obj-$(CONFIG_VIDEO_SAA7185) += saa7185.o
+ obj-$(CONFIG_VIDEO_SAA6752HS) += saa6752hs.o
+-obj-$(CONFIG_VIDEO_AD5398)  += ad5398.o
++obj-$(CONFIG_VIDEO_AD5398)  += ad5398_vcm.o
+ obj-$(CONFIG_VIDEO_AD5820)  += ad5820.o
+ obj-$(CONFIG_VIDEO_AK7375)  += ak7375.o
+ obj-$(CONFIG_VIDEO_DW9714)  += dw9714.o
+--- a/drivers/media/i2c/ad5398.c
++++ /dev/null
+@@ -1,342 +0,0 @@
+-// SPDX-License-Identifier: GPL-2.0-only
+-/*
+- * AD5398 DAC driver for camera voice coil focus.
+- * Copyright (C) 2021 Raspberry Pi (Trading) Ltd.
+- *
+- * Based on AD5820 DAC driver by Nokia and TI.
+- *
+- * This driver uses the regulator framework notification hooks on the
+- * assumption that the VCM and sensor share a regulator. This means the VCM
+- * position will be restored when either the sensor or VCM subdevices are opened
+- * or powered up. The client can therefore choose to ignore the VCM subdevice,
+- * and the lens position will be as previously requested. Without that, there
+- * is a hard requirement to have the VCM subdevice open in order for the VCM
+- * to be powered and at the requested position.
+- */
+-
+-#include <linux/errno.h>
+-#include <linux/i2c.h>
+-#include <linux/kernel.h>
+-#include <linux/module.h>
+-#include <linux/regulator/consumer.h>
+-#include <linux/gpio/consumer.h>
+-
+-#include <media/v4l2-ctrls.h>
+-#include <media/v4l2-device.h>
+-#include <media/v4l2-subdev.h>
+-
+-/* Register definitions */
+-#define AD5398_POWER_DOWN		BIT(15)
+-#define AD5398_DAC_SHIFT		4
+-
+-#define to_ad5398_device(sd)	container_of(sd, struct ad5398_device, subdev)
+-
+-struct ad5398_device {
+-	struct v4l2_subdev subdev;
+-	struct ad5398_platform_data *platform_data;
+-	struct regulator *vana;
+-	struct notifier_block nb;
+-
+-	struct v4l2_ctrl_handler ctrls;
+-	u32 focus_absolute;
+-
+-	bool standby;
+-};
+-
+-static int ad5398_write(struct ad5398_device *coil, u16 data)
+-{
+-	struct i2c_client *client = v4l2_get_subdevdata(&coil->subdev);
+-	struct i2c_msg msg;
+-	__be16 be_data;
+-	int r;
+-
+-	if (!client->adapter)
+-		return -ENODEV;
+-
+-	be_data = cpu_to_be16(data);
+-	msg.addr  = client->addr;
+-	msg.flags = 0;
+-	msg.len   = 2;
+-	msg.buf   = (u8 *)&be_data;
+-
+-	r = i2c_transfer(client->adapter, &msg, 1);
+-	if (r < 0) {
+-		dev_err(&client->dev, "write failed, error %d\n", r);
+-		return r;
+-	}
+-
+-	return 0;
+-}
+-
+-/*
+- * Calculate status word and write it to the device based on current
+- * values of V4L2 controls. It is assumed that the stored V4L2 control
+- * values are properly limited and rounded.
+- */
+-static int ad5398_update_hw(struct ad5398_device *coil)
+-{
+-	u16 status;
+-
+-	status = coil->focus_absolute << AD5398_DAC_SHIFT;
+-
+-	if (coil->standby)
+-		status |= AD5398_POWER_DOWN;
+-
+-	return ad5398_write(coil, status);
+-}
+-
+-/*
+- * Power handling
+- */
+-static int ad5398_power_off(struct ad5398_device *coil)
+-{
+-	int ret = 0;
+-
+-	coil->standby = true;
+-	ret = ad5398_update_hw(coil);
+-
+-	return ret;
+-}
+-
+-static int ad5398_power_on(struct ad5398_device *coil)
+-{
+-	int ret;
+-
+-	/* Restore the hardware settings. */
+-	coil->standby = false;
+-	ret = ad5398_update_hw(coil);
+-	if (ret)
+-		goto fail;
+-
+-	return 0;
+-
+-fail:
+-	coil->standby = true;
+-
+-	return ret;
+-}
+-
+-/*
+- * V4L2 controls
+- */
+-static int ad5398_set_ctrl(struct v4l2_ctrl *ctrl)
+-{
+-	struct ad5398_device *coil =
+-		container_of(ctrl->handler, struct ad5398_device, ctrls);
+-
+-	switch (ctrl->id) {
+-	case V4L2_CID_FOCUS_ABSOLUTE:
+-		coil->focus_absolute = ctrl->val;
+-		return ad5398_update_hw(coil);
+-	}
+-
+-	return 0;
+-}
+-
+-static const struct v4l2_ctrl_ops ad5398_ctrl_ops = {
+-	.s_ctrl = ad5398_set_ctrl,
+-};
+-
+-static int ad5398_init_controls(struct ad5398_device *coil)
+-{
+-	v4l2_ctrl_handler_init(&coil->ctrls, 1);
+-
+-	/*
+-	 * V4L2_CID_FOCUS_ABSOLUTE
+-	 *
+-	 * Minimum current is 0 mA, maximum is 120 mA. Thus, 1 code is
+-	 * equivalent to 120/1023 = 0.1173 mA. Nevertheless, we do not use [mA]
+-	 * for focus position, because it is meaningless for user. Meaningful
+-	 * would be to use focus distance or even its inverse, but since the
+-	 * driver doesn't have sufficient knowledge to do the conversion, we
+-	 * will just use abstract codes here. In any case, smaller value = focus
+-	 * position farther from camera. The default zero value means focus at
+-	 * infinity, and also least current consumption.
+-	 */
+-	v4l2_ctrl_new_std(&coil->ctrls, &ad5398_ctrl_ops,
+-			  V4L2_CID_FOCUS_ABSOLUTE, 0, 1023, 1, 0);
+-
+-	if (coil->ctrls.error)
+-		return coil->ctrls.error;
+-
+-	coil->focus_absolute = 0;
+-
+-	coil->subdev.ctrl_handler = &coil->ctrls;
+-
+-	return 0;
+-}
+-
+-/*
+- * V4L2 subdev operations
+- */
+-static int ad5398_registered(struct v4l2_subdev *subdev)
+-{
+-	struct ad5398_device *coil = to_ad5398_device(subdev);
+-
+-	return ad5398_init_controls(coil);
+-}
+-
+-static int
+-ad5398_set_power(struct v4l2_subdev *subdev, int on)
+-{
+-	struct ad5398_device *coil = to_ad5398_device(subdev);
+-	int ret;
+-
+-	if (on)
+-		ret = regulator_enable(coil->vana);
+-	else
+-		ret = regulator_disable(coil->vana);
+-
+-	return ret;
+-}
+-
+-static int ad5398_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+-{
+-	struct ad5398_device *coil = to_ad5398_device(sd);
+-
+-	return regulator_enable(coil->vana);
+-}
+-
+-static int ad5398_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+-{
+-	struct ad5398_device *coil = to_ad5398_device(sd);
+-
+-	return regulator_disable(coil->vana);
+-}
+-
+-static const struct v4l2_subdev_core_ops ad5398_core_ops = {
+-	.s_power = ad5398_set_power,
+-};
+-
+-static const struct v4l2_subdev_ops ad5398_ops = {
+-	.core = &ad5398_core_ops,
+-};
+-
+-static const struct v4l2_subdev_internal_ops ad5398_internal_ops = {
+-	.registered = ad5398_registered,
+-	.open = ad5398_open,
+-	.close = ad5398_close,
+-};
+-
+-/*
+- * I2C driver
+- */
+-static int __maybe_unused ad5398_suspend(struct device *dev)
+-{
+-	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+-	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+-	struct ad5398_device *coil = to_ad5398_device(subdev);
+-
+-	return regulator_enable(coil->vana);
+-}
+-
+-static int __maybe_unused ad5398_resume(struct device *dev)
+-{
+-	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+-	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+-	struct ad5398_device *coil = to_ad5398_device(subdev);
+-
+-	return regulator_disable(coil->vana);
+-}
+-
+-static int ad5398_regulator_notifier(struct notifier_block *nb,
+-				     unsigned long event,
+-				     void *ignored)
+-{
+-	struct ad5398_device *coil = container_of(nb, struct ad5398_device, nb);
+-
+-	if (event == REGULATOR_EVENT_ENABLE)
+-		ad5398_power_on(coil);
+-	else if (event == REGULATOR_EVENT_PRE_DISABLE)
+-		ad5398_power_off(coil);
+-
+-	return NOTIFY_OK;
+-}
+-
+-static int ad5398_probe(struct i2c_client *client,
+-			const struct i2c_device_id *devid)
+-{
+-	struct ad5398_device *coil;
+-	int ret;
+-
+-	coil = devm_kzalloc(&client->dev, sizeof(*coil), GFP_KERNEL);
+-	if (!coil)
+-		return -ENOMEM;
+-
+-	coil->vana = devm_regulator_get(&client->dev, "VANA");
+-	if (IS_ERR(coil->vana)) {
+-		ret = PTR_ERR(coil->vana);
+-		if (ret != -EPROBE_DEFER)
+-			dev_err(&client->dev, "could not get regulator for vana\n");
+-		return ret;
+-	}
+-
+-	v4l2_i2c_subdev_init(&coil->subdev, client, &ad5398_ops);
+-	coil->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+-	coil->subdev.internal_ops = &ad5398_internal_ops;
+-	coil->subdev.entity.function = MEDIA_ENT_F_LENS;
+-	strscpy(coil->subdev.name, "ad5398 focus", sizeof(coil->subdev.name));
+-
+-	coil->nb.notifier_call = &ad5398_regulator_notifier;
+-	ret = regulator_register_notifier(coil->vana, &coil->nb);
+-	if (ret < 0)
+-		return ret;
+-
+-	ret = media_entity_pads_init(&coil->subdev.entity, 0, NULL);
+-	if (ret < 0)
+-		goto cleanup2;
+-
+-	ret = v4l2_async_register_subdev(&coil->subdev);
+-	if (ret < 0)
+-		goto cleanup;
+-
+-	return ret;
+-
+-cleanup:
+-	media_entity_cleanup(&coil->subdev.entity);
+-cleanup2:
+-	regulator_unregister_notifier(coil->vana, &coil->nb);
+-	return ret;
+-}
+-
+-static int ad5398_remove(struct i2c_client *client)
+-{
+-	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+-	struct ad5398_device *coil = to_ad5398_device(subdev);
+-
+-	v4l2_async_unregister_subdev(&coil->subdev);
+-	v4l2_ctrl_handler_free(&coil->ctrls);
+-	media_entity_cleanup(&coil->subdev.entity);
+-	return 0;
+-}
+-
+-static const struct i2c_device_id ad5398_id_table[] = {
+-	{ "ad5398", 0 },
+-	{ }
+-};
+-MODULE_DEVICE_TABLE(i2c, ad5398_id_table);
+-
+-static const struct of_device_id ad5398_of_table[] = {
+-	{ .compatible = "adi,ad5398" },
+-	{ }
+-};
+-MODULE_DEVICE_TABLE(of, ad5398_of_table);
+-
+-static SIMPLE_DEV_PM_OPS(ad5398_pm, ad5398_suspend, ad5398_resume);
+-
+-static struct i2c_driver ad5398_i2c_driver = {
+-	.driver		= {
+-		.name	= "ad5398",
+-		.pm	= &ad5398_pm,
+-		.of_match_table = ad5398_of_table,
+-	},
+-	.probe		= ad5398_probe,
+-	.remove		= ad5398_remove,
+-	.id_table	= ad5398_id_table,
+-};
+-
+-module_i2c_driver(ad5398_i2c_driver);
+-
+-MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
+-MODULE_DESCRIPTION("AD5398 camera lens driver");
+-MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/drivers/media/i2c/ad5398_vcm.c
+@@ -0,0 +1,342 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * AD5398 DAC driver for camera voice coil focus.
++ * Copyright (C) 2021 Raspberry Pi (Trading) Ltd.
++ *
++ * Based on AD5820 DAC driver by Nokia and TI.
++ *
++ * This driver uses the regulator framework notification hooks on the
++ * assumption that the VCM and sensor share a regulator. This means the VCM
++ * position will be restored when either the sensor or VCM subdevices are opened
++ * or powered up. The client can therefore choose to ignore the VCM subdevice,
++ * and the lens position will be as previously requested. Without that, there
++ * is a hard requirement to have the VCM subdevice open in order for the VCM
++ * to be powered and at the requested position.
++ */
++
++#include <linux/errno.h>
++#include <linux/i2c.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/regulator/consumer.h>
++#include <linux/gpio/consumer.h>
++
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-subdev.h>
++
++/* Register definitions */
++#define AD5398_POWER_DOWN		BIT(15)
++#define AD5398_DAC_SHIFT		4
++
++#define to_ad5398_device(sd)	container_of(sd, struct ad5398_device, subdev)
++
++struct ad5398_device {
++	struct v4l2_subdev subdev;
++	struct ad5398_platform_data *platform_data;
++	struct regulator *vana;
++	struct notifier_block nb;
++
++	struct v4l2_ctrl_handler ctrls;
++	u32 focus_absolute;
++
++	bool standby;
++};
++
++static int ad5398_write(struct ad5398_device *coil, u16 data)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&coil->subdev);
++	struct i2c_msg msg;
++	__be16 be_data;
++	int r;
++
++	if (!client->adapter)
++		return -ENODEV;
++
++	be_data = cpu_to_be16(data);
++	msg.addr  = client->addr;
++	msg.flags = 0;
++	msg.len   = 2;
++	msg.buf   = (u8 *)&be_data;
++
++	r = i2c_transfer(client->adapter, &msg, 1);
++	if (r < 0) {
++		dev_err(&client->dev, "write failed, error %d\n", r);
++		return r;
++	}
++
++	return 0;
++}
++
++/*
++ * Calculate status word and write it to the device based on current
++ * values of V4L2 controls. It is assumed that the stored V4L2 control
++ * values are properly limited and rounded.
++ */
++static int ad5398_update_hw(struct ad5398_device *coil)
++{
++	u16 status;
++
++	status = coil->focus_absolute << AD5398_DAC_SHIFT;
++
++	if (coil->standby)
++		status |= AD5398_POWER_DOWN;
++
++	return ad5398_write(coil, status);
++}
++
++/*
++ * Power handling
++ */
++static int ad5398_power_off(struct ad5398_device *coil)
++{
++	int ret = 0;
++
++	coil->standby = true;
++	ret = ad5398_update_hw(coil);
++
++	return ret;
++}
++
++static int ad5398_power_on(struct ad5398_device *coil)
++{
++	int ret;
++
++	/* Restore the hardware settings. */
++	coil->standby = false;
++	ret = ad5398_update_hw(coil);
++	if (ret)
++		goto fail;
++
++	return 0;
++
++fail:
++	coil->standby = true;
++
++	return ret;
++}
++
++/*
++ * V4L2 controls
++ */
++static int ad5398_set_ctrl(struct v4l2_ctrl *ctrl)
++{
++	struct ad5398_device *coil =
++		container_of(ctrl->handler, struct ad5398_device, ctrls);
++
++	switch (ctrl->id) {
++	case V4L2_CID_FOCUS_ABSOLUTE:
++		coil->focus_absolute = ctrl->val;
++		return ad5398_update_hw(coil);
++	}
++
++	return 0;
++}
++
++static const struct v4l2_ctrl_ops ad5398_ctrl_ops = {
++	.s_ctrl = ad5398_set_ctrl,
++};
++
++static int ad5398_init_controls(struct ad5398_device *coil)
++{
++	v4l2_ctrl_handler_init(&coil->ctrls, 1);
++
++	/*
++	 * V4L2_CID_FOCUS_ABSOLUTE
++	 *
++	 * Minimum current is 0 mA, maximum is 120 mA. Thus, 1 code is
++	 * equivalent to 120/1023 = 0.1173 mA. Nevertheless, we do not use [mA]
++	 * for focus position, because it is meaningless for user. Meaningful
++	 * would be to use focus distance or even its inverse, but since the
++	 * driver doesn't have sufficient knowledge to do the conversion, we
++	 * will just use abstract codes here. In any case, smaller value = focus
++	 * position farther from camera. The default zero value means focus at
++	 * infinity, and also least current consumption.
++	 */
++	v4l2_ctrl_new_std(&coil->ctrls, &ad5398_ctrl_ops,
++			  V4L2_CID_FOCUS_ABSOLUTE, 0, 1023, 1, 0);
++
++	if (coil->ctrls.error)
++		return coil->ctrls.error;
++
++	coil->focus_absolute = 0;
++
++	coil->subdev.ctrl_handler = &coil->ctrls;
++
++	return 0;
++}
++
++/*
++ * V4L2 subdev operations
++ */
++static int ad5398_registered(struct v4l2_subdev *subdev)
++{
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	return ad5398_init_controls(coil);
++}
++
++static int
++ad5398_set_power(struct v4l2_subdev *subdev, int on)
++{
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++	int ret;
++
++	if (on)
++		ret = regulator_enable(coil->vana);
++	else
++		ret = regulator_disable(coil->vana);
++
++	return ret;
++}
++
++static int ad5398_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct ad5398_device *coil = to_ad5398_device(sd);
++
++	return regulator_enable(coil->vana);
++}
++
++static int ad5398_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct ad5398_device *coil = to_ad5398_device(sd);
++
++	return regulator_disable(coil->vana);
++}
++
++static const struct v4l2_subdev_core_ops ad5398_core_ops = {
++	.s_power = ad5398_set_power,
++};
++
++static const struct v4l2_subdev_ops ad5398_ops = {
++	.core = &ad5398_core_ops,
++};
++
++static const struct v4l2_subdev_internal_ops ad5398_internal_ops = {
++	.registered = ad5398_registered,
++	.open = ad5398_open,
++	.close = ad5398_close,
++};
++
++/*
++ * I2C driver
++ */
++static int __maybe_unused ad5398_suspend(struct device *dev)
++{
++	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
++	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	return regulator_enable(coil->vana);
++}
++
++static int __maybe_unused ad5398_resume(struct device *dev)
++{
++	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
++	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	return regulator_disable(coil->vana);
++}
++
++static int ad5398_regulator_notifier(struct notifier_block *nb,
++				     unsigned long event,
++				     void *ignored)
++{
++	struct ad5398_device *coil = container_of(nb, struct ad5398_device, nb);
++
++	if (event == REGULATOR_EVENT_ENABLE)
++		ad5398_power_on(coil);
++	else if (event == REGULATOR_EVENT_PRE_DISABLE)
++		ad5398_power_off(coil);
++
++	return NOTIFY_OK;
++}
++
++static int ad5398_probe(struct i2c_client *client,
++			const struct i2c_device_id *devid)
++{
++	struct ad5398_device *coil;
++	int ret;
++
++	coil = devm_kzalloc(&client->dev, sizeof(*coil), GFP_KERNEL);
++	if (!coil)
++		return -ENOMEM;
++
++	coil->vana = devm_regulator_get(&client->dev, "VANA");
++	if (IS_ERR(coil->vana)) {
++		ret = PTR_ERR(coil->vana);
++		if (ret != -EPROBE_DEFER)
++			dev_err(&client->dev, "could not get regulator for vana\n");
++		return ret;
++	}
++
++	v4l2_i2c_subdev_init(&coil->subdev, client, &ad5398_ops);
++	coil->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
++	coil->subdev.internal_ops = &ad5398_internal_ops;
++	coil->subdev.entity.function = MEDIA_ENT_F_LENS;
++	strscpy(coil->subdev.name, "ad5398 focus", sizeof(coil->subdev.name));
++
++	coil->nb.notifier_call = &ad5398_regulator_notifier;
++	ret = regulator_register_notifier(coil->vana, &coil->nb);
++	if (ret < 0)
++		return ret;
++
++	ret = media_entity_pads_init(&coil->subdev.entity, 0, NULL);
++	if (ret < 0)
++		goto cleanup2;
++
++	ret = v4l2_async_register_subdev(&coil->subdev);
++	if (ret < 0)
++		goto cleanup;
++
++	return ret;
++
++cleanup:
++	media_entity_cleanup(&coil->subdev.entity);
++cleanup2:
++	regulator_unregister_notifier(coil->vana, &coil->nb);
++	return ret;
++}
++
++static int ad5398_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
++	struct ad5398_device *coil = to_ad5398_device(subdev);
++
++	v4l2_async_unregister_subdev(&coil->subdev);
++	v4l2_ctrl_handler_free(&coil->ctrls);
++	media_entity_cleanup(&coil->subdev.entity);
++	return 0;
++}
++
++static const struct i2c_device_id ad5398_id_table[] = {
++	{ "ad5398", 0 },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, ad5398_id_table);
++
++static const struct of_device_id ad5398_of_table[] = {
++	{ .compatible = "adi,ad5398" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, ad5398_of_table);
++
++static SIMPLE_DEV_PM_OPS(ad5398_pm, ad5398_suspend, ad5398_resume);
++
++static struct i2c_driver ad5398_i2c_driver = {
++	.driver		= {
++		.name	= "ad5398",
++		.pm	= &ad5398_pm,
++		.of_match_table = ad5398_of_table,
++	},
++	.probe		= ad5398_probe,
++	.remove		= ad5398_remove,
++	.id_table	= ad5398_id_table,
++};
++
++module_i2c_driver(ad5398_i2c_driver);
++
++MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
++MODULE_DESCRIPTION("AD5398 camera lens driver");
++MODULE_LICENSE("GPL");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0778-drm-object-Add-drm_object_property_get_default_value.patch b/target/linux/bcm27xx/patches-5.15/950-0778-drm-object-Add-drm_object_property_get_default_value.patch
new file mode 100644
index 0000000000..8e7844e057
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0778-drm-object-Add-drm_object_property_get_default_value.patch
@@ -0,0 +1,129 @@
+From e458f351c7af35775528575611cb9b8f12ef6775 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 21 Feb 2022 10:59:02 +0100
+Subject: [PATCH] drm/object: Add
+ drm_object_property_get_default_value() function
+
+Upstream commit adf47b75297ebc71c53b6dc2d3c55f42b8fb79fd.
+
+Some functions to create properties (drm_plane_create_zpos_property or
+drm_plane_create_color_properties for example) will ask for a range of
+acceptable value and an initial one.
+
+This initial value is then stored in the values array for that property.
+
+Let's provide an helper to access this property.
+
+Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20220221095918.18763-7-maxime@cerno.tech
+---
+ drivers/gpu/drm/drm_mode_object.c | 53 +++++++++++++++++++++++++------
+ include/drm/drm_mode_object.h     |  7 ++++
+ 2 files changed, 50 insertions(+), 10 deletions(-)
+
+--- a/drivers/gpu/drm/drm_mode_object.c
++++ b/drivers/gpu/drm/drm_mode_object.c
+@@ -297,11 +297,26 @@ int drm_object_property_set_value(struct
+ }
+ EXPORT_SYMBOL(drm_object_property_set_value);
+ 
++static int __drm_object_property_get_prop_value(struct drm_mode_object *obj,
++						struct drm_property *property,
++						uint64_t *val)
++{
++	int i;
++
++	for (i = 0; i < obj->properties->count; i++) {
++		if (obj->properties->properties[i] == property) {
++			*val = obj->properties->values[i];
++			return 0;
++		}
++	}
++
++	return -EINVAL;
++}
++
+ static int __drm_object_property_get_value(struct drm_mode_object *obj,
+ 					   struct drm_property *property,
+ 					   uint64_t *val)
+ {
+-	int i;
+ 
+ 	/* read-only properties bypass atomic mechanism and still store
+ 	 * their value in obj->properties->values[].. mostly to avoid
+@@ -311,15 +326,7 @@ static int __drm_object_property_get_val
+ 			!(property->flags & DRM_MODE_PROP_IMMUTABLE))
+ 		return drm_atomic_get_property(obj, property, val);
+ 
+-	for (i = 0; i < obj->properties->count; i++) {
+-		if (obj->properties->properties[i] == property) {
+-			*val = obj->properties->values[i];
+-			return 0;
+-		}
+-
+-	}
+-
+-	return -EINVAL;
++	return __drm_object_property_get_prop_value(obj, property, val);
+ }
+ 
+ /**
+@@ -348,6 +355,32 @@ int drm_object_property_get_value(struct
+ }
+ EXPORT_SYMBOL(drm_object_property_get_value);
+ 
++/**
++ * drm_object_property_get_default_value - retrieve the default value of a
++ * property when in atomic mode.
++ * @obj: drm mode object to get property value from
++ * @property: property to retrieve
++ * @val: storage for the property value
++ *
++ * This function retrieves the default state of the given property as passed in
++ * to drm_object_attach_property
++ *
++ * Only atomic drivers should call this function directly, as for non-atomic
++ * drivers it will return the current value.
++ *
++ * Returns:
++ * Zero on success, error code on failure.
++ */
++int drm_object_property_get_default_value(struct drm_mode_object *obj,
++					  struct drm_property *property,
++					  uint64_t *val)
++{
++	WARN_ON(!drm_drv_uses_atomic_modeset(property->dev));
++
++	return __drm_object_property_get_prop_value(obj, property, val);
++}
++EXPORT_SYMBOL(drm_object_property_get_default_value);
++
+ /* helper for getconnector and getproperties ioctls */
+ int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
+ 				   uint32_t __user *prop_ptr,
+--- a/include/drm/drm_mode_object.h
++++ b/include/drm/drm_mode_object.h
+@@ -98,6 +98,10 @@ struct drm_object_properties {
+ 	 * Hence atomic drivers should not use drm_object_property_set_value()
+ 	 * and drm_object_property_get_value() on mutable objects, i.e. those
+ 	 * without the DRM_MODE_PROP_IMMUTABLE flag set.
++	 *
++	 * For atomic drivers the default value of properties is stored in this
++	 * array, so drm_object_property_get_default_value can be used to
++	 * retrieve it.
+ 	 */
+ 	uint64_t values[DRM_OBJECT_MAX_PROPERTY];
+ };
+@@ -126,6 +130,9 @@ int drm_object_property_set_value(struct
+ int drm_object_property_get_value(struct drm_mode_object *obj,
+ 				  struct drm_property *property,
+ 				  uint64_t *value);
++int drm_object_property_get_default_value(struct drm_mode_object *obj,
++					  struct drm_property *property,
++					  uint64_t *val);
+ 
+ void drm_object_attach_property(struct drm_mode_object *obj,
+ 				struct drm_property *property,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0779-drm-object-Add-default-zpos-value-at-reset.patch b/target/linux/bcm27xx/patches-5.15/950-0779-drm-object-Add-default-zpos-value-at-reset.patch
new file mode 100644
index 0000000000..ff0e2ccf71
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0779-drm-object-Add-default-zpos-value-at-reset.patch
@@ -0,0 +1,54 @@
+From 69b992bf70df1892cfc8ccff07a79e8ea91e2902 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 21 Feb 2022 10:59:03 +0100
+Subject: [PATCH] drm/object: Add default zpos value at reset
+
+Upstream commit 1a7998dab5dd3d11bada7e3921781922082e7fe6
+
+The drm_plane_create_zpos_property() function asks for an initial value,
+and will set the associated plane state variable with that value if a
+state is present.
+
+However, that function is usually called at a time where there's no
+state yet. Since the drm_plane_state reset helper doesn't take care of
+reading that value when it's called, it means that in most cases the
+initial value will be 0, or the drivers will have to work around it.
+
+Let's add some code in __drm_atomic_helper_plane_state_reset() to get
+the initial zpos value if the property has been attached in order to fix
+this.
+
+Reviewed-by: Harry Wentland <harry.wentland@amd.com>
+Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20220221095918.18763-8-maxime@cerno.tech
+---
+ drivers/gpu/drm/drm_atomic_state_helper.c | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/drivers/gpu/drm/drm_atomic_state_helper.c
++++ b/drivers/gpu/drm/drm_atomic_state_helper.c
+@@ -243,11 +243,22 @@ EXPORT_SYMBOL(drm_atomic_helper_crtc_des
+ void __drm_atomic_helper_plane_state_reset(struct drm_plane_state *plane_state,
+ 					   struct drm_plane *plane)
+ {
++	u64 val;
++
+ 	plane_state->plane = plane;
+ 	plane_state->rotation = DRM_MODE_ROTATE_0;
+ 
+ 	plane_state->alpha = DRM_BLEND_ALPHA_OPAQUE;
+ 	plane_state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
++
++	if (plane->zpos_property) {
++		if (!drm_object_property_get_default_value(&plane->base,
++							   plane->zpos_property,
++							   &val)) {
++			plane_state->zpos = val;
++			plane_state->normalized_zpos = val;
++		}
++	}
+ }
+ EXPORT_SYMBOL(__drm_atomic_helper_plane_state_reset);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0780-drm-object-Add-default-color-encoding-and-range-valu.patch b/target/linux/bcm27xx/patches-5.15/950-0780-drm-object-Add-default-color-encoding-and-range-valu.patch
new file mode 100644
index 0000000000..40592b27c4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0780-drm-object-Add-default-color-encoding-and-range-valu.patch
@@ -0,0 +1,54 @@
+From 2506f4df7531123573ab9f11c9f032ffbb025c1d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 21 Feb 2022 10:59:14 +0100
+Subject: [PATCH] drm/object: Add default color encoding and range
+ value at reset
+
+Upstream commit 9a48ab11714c955456fefdd4ab532d324fbef563
+
+The drm_plane_create_color_properties() function asks for an initial
+value for the color encoding and range, and will set the associated
+plane state variable with that value if a state is present.
+
+However, that function is usually called at a time where there's no
+state yet. Since the drm_plane_state reset helper doesn't take care of
+reading that value when it's called, it means that in most cases the
+initial value will be 0 (so DRM_COLOR_YCBCR_BT601 and
+DRM_COLOR_YCBCR_LIMITED_RANGE, respectively), or the drivers will have
+to work around it.
+
+Let's add some code in __drm_atomic_helper_plane_state_reset() to get
+the initial encoding and range value if the property has been attached
+in order to fix this.
+
+Reviewed-by: Harry Wentland <harry.wentland@amd.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20220221095918.18763-19-maxime@cerno.tech
+---
+ drivers/gpu/drm/drm_atomic_state_helper.c | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+--- a/drivers/gpu/drm/drm_atomic_state_helper.c
++++ b/drivers/gpu/drm/drm_atomic_state_helper.c
+@@ -251,6 +251,20 @@ void __drm_atomic_helper_plane_state_res
+ 	plane_state->alpha = DRM_BLEND_ALPHA_OPAQUE;
+ 	plane_state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
+ 
++	if (plane->color_encoding_property) {
++		if (!drm_object_property_get_default_value(&plane->base,
++							   plane->color_encoding_property,
++							   &val))
++			plane_state->color_encoding = val;
++	}
++
++	if (plane->color_range_property) {
++		if (!drm_object_property_get_default_value(&plane->base,
++							   plane->color_range_property,
++							   &val))
++			plane_state->color_range = val;
++	}
++
+ 	if (plane->zpos_property) {
+ 		if (!drm_object_property_get_default_value(&plane->base,
+ 							   plane->zpos_property,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0781-drm-vc4-Support-zpos-on-all-planes.patch b/target/linux/bcm27xx/patches-5.15/950-0781-drm-vc4-Support-zpos-on-all-planes.patch
new file mode 100644
index 0000000000..62ee1255b9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0781-drm-vc4-Support-zpos-on-all-planes.patch
@@ -0,0 +1,145 @@
+From 0e096c4f431ccd7f73e9baa930821dd3bbe93e35 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 25 Jan 2022 17:28:18 +0000
+Subject: [PATCH] drm/vc4: Support zpos on all planes
+
+Adds the zpos property to all planes, and creates the dlist
+by placing the fragments in the correct order based on zpos.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hvs.c   | 43 +++++++++++++++++++++------------
+ drivers/gpu/drm/vc4/vc4_kms.c   |  3 +--
+ drivers/gpu/drm/vc4/vc4_plane.c | 22 ++++++++++++++---
+ 3 files changed, 48 insertions(+), 20 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -854,6 +854,8 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	bool debug_dump_regs = false;
+ 	bool enable_bg_fill = false;
+ 	u32 __iomem *dlist_start, *dlist_next;
++	unsigned int zpos = 0;
++	bool found = false;
+ 
+ 	if (vc4_state->assigned_channel == VC4_HVS_CHANNEL_DISABLED)
+ 		return;
+@@ -867,23 +869,34 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	dlist_next = dlist_start;
+ 
+ 	/* Copy all the active planes' dlist contents to the hardware dlist. */
+-	drm_atomic_crtc_for_each_plane(plane, crtc) {
+-		/* Is this the first active plane? */
+-		if (dlist_next == dlist_start) {
+-			/* We need to enable background fill when a plane
+-			 * could be alpha blending from the background, i.e.
+-			 * where no other plane is underneath. It suffices to
+-			 * consider the first active plane here since we set
+-			 * needs_bg_fill such that either the first plane
+-			 * already needs it or all planes on top blend from
+-			 * the first or a lower plane.
+-			 */
+-			vc4_plane_state = to_vc4_plane_state(plane->state);
+-			enable_bg_fill = vc4_plane_state->needs_bg_fill;
++	do {
++		found = false;
++
++		drm_atomic_crtc_for_each_plane(plane, crtc) {
++			if (plane->state->normalized_zpos != zpos)
++				continue;
++
++			/* Is this the first active plane? */
++			if (dlist_next == dlist_start) {
++				/* We need to enable background fill when a plane
++				 * could be alpha blending from the background, i.e.
++				 * where no other plane is underneath. It suffices to
++				 * consider the first active plane here since we set
++				 * needs_bg_fill such that either the first plane
++				 * already needs it or all planes on top blend from
++				 * the first or a lower plane.
++				 */
++				vc4_plane_state = to_vc4_plane_state(plane->state);
++				enable_bg_fill = vc4_plane_state->needs_bg_fill;
++			}
++
++			dlist_next += vc4_plane_write_dlist(plane, dlist_next);
++
++			found = true;
+ 		}
+ 
+-		dlist_next += vc4_plane_write_dlist(plane, dlist_next);
+-	}
++		zpos++;
++	} while (found);
+ 
+ 	writel(SCALER_CTL0_END, dlist_next);
+ 	dlist_next++;
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -1042,8 +1042,7 @@ int vc4_kms_load(struct drm_device *dev)
+ 	dev->mode_config.helper_private = &vc4_mode_config_helpers;
+ 	dev->mode_config.preferred_depth = 24;
+ 	dev->mode_config.async_page_flip = true;
+-	if (vc4->firmware_kms)
+-		dev->mode_config.normalize_zpos = true;
++	dev->mode_config.normalize_zpos = true;
+ 
+ 	ret = vc4_ctm_obj_init(vc4);
+ 	if (ret)
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -1572,9 +1572,14 @@ struct drm_plane *vc4_plane_init(struct
+ 					  DRM_COLOR_YCBCR_BT709,
+ 					  DRM_COLOR_YCBCR_LIMITED_RANGE);
+ 
++	if (type == DRM_PLANE_TYPE_PRIMARY)
++		drm_plane_create_zpos_immutable_property(plane, 0);
++
+ 	return plane;
+ }
+ 
++#define VC4_NUM_OVERLAY_PLANES	16
++
+ int vc4_plane_create_additional_planes(struct drm_device *drm)
+ {
+ 	struct drm_plane *cursor_plane;
+@@ -1590,7 +1595,7 @@ int vc4_plane_create_additional_planes(s
+ 	 * modest number of planes to expose, that should hopefully
+ 	 * still cover any sane usecase.
+ 	 */
+-	for (i = 0; i < 16; i++) {
++	for (i = 0; i < VC4_NUM_OVERLAY_PLANES; i++) {
+ 		struct drm_plane *plane =
+ 			vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY);
+ 
+@@ -1599,17 +1604,28 @@ int vc4_plane_create_additional_planes(s
+ 
+ 		plane->possible_crtcs =
+ 			GENMASK(drm->mode_config.num_crtc - 1, 0);
++
++		/* Create zpos property. Max of all the overlays + 1 primary +
++		 * 1 cursor plane on a crtc.
++		 */
++		drm_plane_create_zpos_property(plane, i + 1, 1,
++					       VC4_NUM_OVERLAY_PLANES + 1);
+ 	}
+ 
+ 	drm_for_each_crtc(crtc, drm) {
+ 		/* Set up the legacy cursor after overlay initialization,
+-		 * since we overlay planes on the CRTC in the order they were
+-		 * initialized.
++		 * since the zpos fallback is that planes are rendered by plane
++		 * ID order, and that then puts the cursor on top.
+ 		 */
+ 		cursor_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_CURSOR);
+ 		if (!IS_ERR(cursor_plane)) {
+ 			cursor_plane->possible_crtcs = drm_crtc_mask(crtc);
+ 			crtc->cursor = cursor_plane;
++
++			drm_plane_create_zpos_property(cursor_plane,
++						       VC4_NUM_OVERLAY_PLANES + 1,
++						       1,
++						       VC4_NUM_OVERLAY_PLANES + 1);
+ 		}
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0782-CM3-cam1_reg-and-cam1_reg_gpio-fix.patch b/target/linux/bcm27xx/patches-5.15/950-0782-CM3-cam1_reg-and-cam1_reg_gpio-fix.patch
new file mode 100644
index 0000000000..8e764f88bb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0782-CM3-cam1_reg-and-cam1_reg_gpio-fix.patch
@@ -0,0 +1,23 @@
+From ad3e478684767e93f6e900af484571fe4a0bef3b Mon Sep 17 00:00:00 2001
+From: Rafael Sobral <rafaelsobral@pm.me>
+Date: Fri, 18 Mar 2022 23:25:16 -0300
+Subject: [PATCH] CM3 cam1_reg and cam1_reg_gpio fix
+
+property name is gpio and not gpios
+---
+ arch/arm/boot/dts/bcm2710-rpi-cm3.dts | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+@@ -211,8 +211,8 @@ cam0_reg: &cam0_regulator {
+ 		act_led_activelow = <&act_led>,"gpios:8";
+ 		act_led_trigger = <&act_led>,"linux,default-trigger";
+ 		cam0_reg = <&cam0_reg>,"status";
+-		cam0_reg_gpio = <&cam0_reg>,"gpios:4";
++		cam0_reg_gpio = <&cam0_reg>,"gpio:4";
+ 		cam1_reg = <&cam1_reg>,"status";
+-		cam1_reg_gpio = <&cam1_reg>,"gpios:4";
++		cam1_reg_gpio = <&cam1_reg>,"gpio:4";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0783-overlays-Fix-cam-_reg_gpio-parameter-on-CM1.patch b/target/linux/bcm27xx/patches-5.15/950-0783-overlays-Fix-cam-_reg_gpio-parameter-on-CM1.patch
new file mode 100644
index 0000000000..9a3b5bc631
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0783-overlays-Fix-cam-_reg_gpio-parameter-on-CM1.patch
@@ -0,0 +1,25 @@
+From aae94965421d23e1bf28a5e0180fd698fd3eeb57 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Sat, 19 Mar 2022 22:19:51 +0000
+Subject: [PATCH] overlays: Fix cam*_reg_gpio parameter on CM1
+
+See: https://github.com/raspberrypi/linux/pull/4945
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2708-rpi-cm.dtsi | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
+@@ -15,8 +15,8 @@
+ 		act_led_activelow = <&act_led>,"gpios:8";
+ 		act_led_trigger = <&act_led>,"linux,default-trigger";
+ 		cam0_reg = <&cam0_reg>,"status";
+-		cam0_reg_gpio = <&cam0_reg>,"gpios:4";
++		cam0_reg_gpio = <&cam0_reg>,"gpio:4";
+ 		cam1_reg = <&cam1_reg>,"status";
+-		cam1_reg_gpio = <&cam1_reg>,"gpios:4";
++		cam1_reg_gpio = <&cam1_reg>,"gpio:4";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch b/target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch
new file mode 100644
index 0000000000..21e037f708
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch
@@ -0,0 +1,46 @@
+From 14ea778d2a5281a0f4c94230abccf30bc72c2bdd Mon Sep 17 00:00:00 2001
+From: Jeff LaBundy <jeff@labundy.com>
+Date: Sat, 19 Mar 2022 20:31:30 -0500
+Subject: [PATCH] overlays: iqs550: Enable interrupt pull-down
+
+The device's active-high interrupt normally serves as a push-pull
+output, but becomes high-impedance during bootloader mode. Enable
+a pull-down to hold the pin in the inactive state.
+
+Signed-off-by: Jeff LaBundy <jeff@labundy.com>
+---
+ arch/arm/boot/dts/overlays/iqs550-overlay.dts | 15 ++++++++++++++-
+ 1 file changed, 14 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/iqs550-overlay.dts
++++ b/arch/arm/boot/dts/overlays/iqs550-overlay.dts
+@@ -20,6 +20,8 @@
+ 				reg = <0x74>;
+ 				interrupt-parent = <&gpio>;
+ 				interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&iqs550_pins>;
+ 				touchscreen-size-x = <800>;
+ 				touchscreen-size-y = <480>;
+ 			};
+@@ -34,8 +36,19 @@
+ 		};
+ 	};
+ 
++	fragment@2 {
++		target = <&gpio>;
++		__overlay__ {
++			iqs550_pins: iqs550_pins {
++				brcm,pins = <4>;
++				brcm,pull = <1>;
++			};
++		};
++	};
++
+ 	__overrides__ {
+-		interrupt = <&iqs550>,"interrupts:0";
++		interrupt = <&iqs550>,"interrupts:0",
++			    <&iqs550_pins>,"brcm,pins:0";
+ 		reset = <0>,"+1", <&iqs550_reset>,"reset-gpios:4";
+ 		sizex = <&iqs550>,"touchscreen-size-x:0";
+ 		sizey = <&iqs550>,"touchscreen-size-y:0";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0785-dtoverlays-Connect-the-backlight-to-the-pitft35-disp.patch b/target/linux/bcm27xx/patches-5.15/950-0785-dtoverlays-Connect-the-backlight-to-the-pitft35-disp.patch
new file mode 100644
index 0000000000..53f0a5f240
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0785-dtoverlays-Connect-the-backlight-to-the-pitft35-disp.patch
@@ -0,0 +1,34 @@
+From 8be4bcd743bb37336f83979fe0834ad601446a13 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 21 Mar 2022 18:27:45 +0000
+Subject: [PATCH] dtoverlays: Connect the backlight to the pitft35
+ display
+
+DRM will automatically handle the backlight with the display if
+told about the linking, so link the two together.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
+@@ -102,7 +102,7 @@
+ 	fragment@5 {
+ 		target-path = "/soc";
+ 		__overlay__ {
+-			backlight {
++			backlight: backlight {
+ 				compatible = "gpio-backlight";
+ 				gpios = <&stmpe_gpio 2 0>;
+ 				default-on;
+@@ -115,6 +115,7 @@
+ 		rotate =  <&pitft>,"rotate:0";
+ 		fps =     <&pitft>,"fps:0";
+ 		debug =   <&pitft>,"debug:0";
+-		drm =     <&pitft>,"compatible=adafruit,yx350hv15";
++		drm =     <&pitft>,"compatible=adafruit,yx350hv15",
++			  <&pitft>,"backlight:0=",<&backlight>;
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0786-drm-vc4-hdmi-Add-CSC-for-BT601-709-2020-limited-and-.patch b/target/linux/bcm27xx/patches-5.15/950-0786-drm-vc4-hdmi-Add-CSC-for-BT601-709-2020-limited-and-.patch
new file mode 100644
index 0000000000..dbfc1520c1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0786-drm-vc4-hdmi-Add-CSC-for-BT601-709-2020-limited-and-.patch
@@ -0,0 +1,308 @@
+From a2e09555e32742320fdaa511e1ccf6aafbf29485 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 7 Mar 2022 15:19:38 +0000
+Subject: [PATCH] drm/vc4: hdmi: Add CSC for BT601/709/2020 limited and
+ full range output
+
+The HVS always composes in the RGB domain, but there is a colourspace
+conversion block on the output to allow for sending YCbCr over the
+HDMI interface.
+The colourspace on that link is configurable via the "Colorspace"
+property on the connector, and that updates the infoframes. There
+is also selection of limited or full range based on the mode selected
+or an override.
+
+Add code to update the CSC as well so that the metadata matches the
+image data.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 198 ++++++++++++++++++++++++---------
+ 1 file changed, 146 insertions(+), 52 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -138,8 +138,8 @@ static bool vc4_hdmi_mode_needs_scrambli
+ 	return clock > HDMI_14_MAX_TMDS_CLK;
+ }
+ 
+-static bool vc4_hdmi_is_full_range_rgb(struct vc4_hdmi *vc4_hdmi,
+-				       const struct drm_display_mode *mode)
++static bool vc4_hdmi_is_full_range(struct vc4_hdmi *vc4_hdmi,
++				   const struct drm_display_mode *mode)
+ {
+ 	struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder;
+ 
+@@ -679,7 +679,7 @@ static void vc4_hdmi_set_avi_infoframe(s
+ 
+ 	drm_hdmi_avi_infoframe_quant_range(&frame.avi,
+ 					   connector, mode,
+-					   vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode) ?
++					   vc4_hdmi_is_full_range(vc4_hdmi, mode) ?
+ 					   HDMI_QUANTIZATION_RANGE_FULL :
+ 					   HDMI_QUANTIZATION_RANGE_LIMITED);
+ 	drm_hdmi_avi_infoframe_colorimetry(&frame.avi, cstate);
+@@ -913,7 +913,7 @@ static void vc4_hdmi_csc_setup(struct vc
+ 	csc_ctl = VC4_SET_FIELD(VC4_HD_CSC_CTL_ORDER_BGR,
+ 				VC4_HD_CSC_CTL_ORDER);
+ 
+-	if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
++	if (!vc4_hdmi_is_full_range(vc4_hdmi, mode)) {
+ 		/* CEA VICs other than #1 requre limited range RGB
+ 		 * output unless overridden by an AVI infoframe.
+ 		 * Apply a colorspace conversion to squash 0-255 down
+@@ -943,7 +943,6 @@ static void vc4_hdmi_csc_setup(struct vc
+ 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
+ }
+ 
+-
+ /*
+  * If we need to output Full Range RGB, then use the unity matrix
+  *
+@@ -951,15 +950,6 @@ static void vc4_hdmi_csc_setup(struct vc
+  * [ 0      1      0      0]
+  * [ 0      0      1      0]
+  *
+- * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+- */
+-static const u16 vc5_hdmi_csc_full_rgb_unity[3][4] = {
+-	{ 0x2000, 0x0000, 0x0000, 0x0000 },
+-	{ 0x0000, 0x2000, 0x0000, 0x0000 },
+-	{ 0x0000, 0x0000, 0x2000, 0x0000 },
+-};
+-
+-/*
+  * CEA VICs other than #1 require limited range RGB output unless
+  * overridden by an AVI infoframe. Apply a colorspace conversion to
+  * squash 0-255 down to 16-235. The matrix here is:
+@@ -970,42 +960,105 @@ static const u16 vc5_hdmi_csc_full_rgb_u
+  *
+  * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+  */
+-static const u16 vc5_hdmi_csc_full_rgb_to_limited_rgb[3][4] = {
+-	{ 0x1b80, 0x0000, 0x0000, 0x0400 },
+-	{ 0x0000, 0x1b80, 0x0000, 0x0400 },
+-	{ 0x0000, 0x0000, 0x1b80, 0x0400 },
++static const u16 vc5_hdmi_csc_full_rgb_to_rgb[2][3][4] = {
++	{
++		/* Full range - unity */
++		{ 0x2000, 0x0000, 0x0000, 0x0000 },
++		{ 0x0000, 0x2000, 0x0000, 0x0000 },
++		{ 0x0000, 0x0000, 0x2000, 0x0000 },
++	}, {
++		/* Limited range */
++		{ 0x1b80, 0x0000, 0x0000, 0x0400 },
++		{ 0x0000, 0x1b80, 0x0000, 0x0400 },
++		{ 0x0000, 0x0000, 0x1b80, 0x0400 },
++	}
++};
++
++/*
++ * Conversion between Full Range RGB and YUV using the BT.601 Colorspace
++ *
++ * Full range
++ * [    0.299000   0.587000   0.114000   0.000000 ]
++ * [   -0.168736  -0.331264   0.500000 128.000000 ]
++ * [    0.500000  -0.418688  -0.081312 128.000000 ]
++ *
++ * Limited range
++ * [    0.255785   0.502160   0.097523  16.000000 ]
++ * [   -0.147644  -0.289856   0.437500 128.000000 ]
++ * [    0.437500  -0.366352  -0.071148 128.000000 ]
++ *
++ * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
++ */
++static const u16 vc5_hdmi_csc_full_rgb_to_yuv_bt601[2][3][4] = {
++	{
++		/* Full range */
++		{ 0x0991, 0x12c9, 0x03a6, 0x0000 },
++		{ 0xfa9b, 0xf567, 0x1000, 0x2000 },
++		{ 0x1000, 0xf29b, 0xfd67, 0x2000 },
++	}, {
++		/* Limited range */
++		{ 0x082f, 0x1012, 0x031f, 0x0400 },
++		{ 0xfb48, 0xf6ba, 0x0e00, 0x2000 },
++		{ 0x0e00, 0xf448, 0xfdba, 0x2000 },
++	}
+ };
+ 
+ /*
+- * Conversion between Full Range RGB and Full Range YUV422 using the
+- * BT.709 Colorspace
++ * Conversion between Full Range RGB and YUV using the BT.709 Colorspace
++ *
++ * Full range
++ * [    0.212600   0.715200   0.072200   0.000000 ]
++ * [   -0.114572  -0.385428   0.500000 128.000000 ]
++ * [    0.500000  -0.454153  -0.045847 128.000000 ]
+  *
+- * [  0.212639  0.715169  0.072192  0   ]
+- * [ -0.117208 -0.394207  0.511416  128 ]
+- * [  0.511416 -0.464524 -0.046891  128 ]
++ * Limited range
++ * [    0.181873   0.611831   0.061765  16.000000 ]
++ * [   -0.100251  -0.337249   0.437500 128.000000 ]
++ * [    0.437500  -0.397384  -0.040116 128.000000 ]
+  *
+  * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+  */
+-static const u16 vc5_hdmi_csc_full_rgb_to_full_yuv422_bt709[3][4] = {
+-	{ 0x06ce, 0x16e3, 0x024f, 0x0000 },
+-	{ 0xfc41, 0xf364, 0x105e, 0x2000 },
+-	{ 0x105e, 0xf124, 0xfe81, 0x2000 },
++static const u16 vc5_hdmi_csc_full_rgb_to_yuv_bt709[2][3][4] = {
++	{
++		/* Full range */
++		{ 0x06ce, 0x16e3, 0x024f, 0x0000 },
++		{ 0xfc56, 0xf3ac, 0x1000, 0x2000 },
++		{ 0x1000, 0xf179, 0xfe89, 0x2000 },
++	}, {
++		/* Limited range	*/
++		{ 0x05d2, 0x1394, 0x01fa, 0x0400 },
++		{ 0xfccc, 0xf536, 0x0e00, 0x2000 },
++		{ 0x0e00, 0xf34a, 0xfeb8, 0x2000 },
++	}
+ };
+ 
+ /*
+- * Conversion between Full Range RGB and Full Range YUV444 using the
+- * BT.709 Colorspace
++ * Conversion between Full Range RGB and YUV using the BT.2020 Colorspace
++ *
++ * Full range
++ * [    0.262700   0.678000   0.059300   0.000000 ]
++ * [   -0.139630  -0.360370   0.500000 128.000000 ]
++ * [    0.500000  -0.459786  -0.040214 128.000000 ]
+  *
+- * [ -0.117208 -0.394207  0.511416  128 ]
+- * [  0.511416 -0.464524 -0.046891  128 ]
+- * [  0.212639  0.715169  0.072192  0   ]
++ * Limited range
++ * [    0.224732   0.580008   0.050729  16.000000 ]
++ * [   -0.122176  -0.315324   0.437500 128.000000 ]
++ * [    0.437500  -0.402312  -0.035188 128.000000 ]
+  *
+  * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+  */
+-static const u16 vc5_hdmi_csc_full_rgb_to_full_yuv444_bt709[3][4] = {
+-	{ 0xfc41, 0xf364, 0x105e, 0x2000 },
+-	{ 0x105e, 0xf124, 0xfe81, 0x2000 },
+-	{ 0x06ce, 0x16e3, 0x024f, 0x0000 },
++static const u16 vc5_hdmi_csc_full_rgb_to_yuv_bt2020[2][3][4] = {
++	{
++		/* Full range */
++		{ 0x0868, 0x15b2, 0x01e6, 0x0000 },
++		{ 0xfb89, 0xf479, 0x1000, 0x2000 },
++		{ 0x1000, 0xf14a, 0xfeb8, 0x2000 },
++	}, {
++		/* Limited range */
++		{ 0x0731, 0x128f, 0x01a0, 0x0400 },
++		{ 0xfc18, 0xf5ea, 0x0e00, 0x2000 },
++		{ 0x0e00, 0xf321, 0xfee1, 0x2000 },
++	}
+ };
+ 
+ static void vc5_hdmi_set_csc_coeffs(struct vc4_hdmi *vc4_hdmi,
+@@ -1021,12 +1074,28 @@ static void vc5_hdmi_set_csc_coeffs(stru
+ 	HDMI_WRITE(HDMI_CSC_34_33, (coeffs[2][3] << 16) | coeffs[2][2]);
+ }
+ 
++static void vc5_hdmi_set_csc_coeffs_swap(struct vc4_hdmi *vc4_hdmi,
++					 const u16 coeffs[3][4])
++{
++	lockdep_assert_held(&vc4_hdmi->hw_lock);
++
++	/* YUV444 needs the CSC matrices using the channels in a different order */
++	HDMI_WRITE(HDMI_CSC_12_11, (coeffs[2][1] << 16) | coeffs[2][0]);
++	HDMI_WRITE(HDMI_CSC_14_13, (coeffs[2][3] << 16) | coeffs[2][2]);
++	HDMI_WRITE(HDMI_CSC_22_21, (coeffs[0][1] << 16) | coeffs[0][0]);
++	HDMI_WRITE(HDMI_CSC_24_23, (coeffs[0][3] << 16) | coeffs[0][2]);
++	HDMI_WRITE(HDMI_CSC_32_31, (coeffs[1][1] << 16) | coeffs[1][0]);
++	HDMI_WRITE(HDMI_CSC_34_33, (coeffs[1][3] << 16) | coeffs[1][2]);
++}
++
+ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
+ 			       struct drm_connector_state *state,
+ 			       const struct drm_display_mode *mode)
+ {
+ 	struct vc4_hdmi_connector_state *vc4_state =
+ 		conn_state_to_vc4_hdmi_conn_state(state);
++	unsigned int lim_range = vc4_hdmi_is_full_range(vc4_hdmi, mode) ? 0 : 1;
++	const u16 (*csc)[4];
+ 	unsigned long flags;
+ 	u32 if_cfg = 0;
+ 	u32 if_xbar = 0x543210;
+@@ -1038,31 +1107,56 @@ static void vc5_hdmi_csc_setup(struct vc
+ 
+ 	switch (vc4_state->output_format) {
+ 	case VC4_HDMI_OUTPUT_YUV444:
+-		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_full_yuv444_bt709);
+-		break;
+-
+ 	case VC4_HDMI_OUTPUT_YUV422:
+-		csc_ctl |= VC4_SET_FIELD(VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD,
+-					 VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422) |
+-			VC5_MT_CP_CSC_CTL_USE_444_TO_422 |
+-			VC5_MT_CP_CSC_CTL_USE_RNG_SUPPRESSION;
+-
+-		csc_chan_ctl |= VC4_SET_FIELD(VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP_LEGACY_STYLE,
+-					      VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP);
++		switch (state->colorspace) {
++		default:
++		case DRM_MODE_COLORIMETRY_NO_DATA:
++		case DRM_MODE_COLORIMETRY_BT709_YCC:
++		case DRM_MODE_COLORIMETRY_XVYCC_709:
++		case DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED:
++		case DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT:
++			csc = vc5_hdmi_csc_full_rgb_to_yuv_bt709[lim_range];
++			break;
++		case DRM_MODE_COLORIMETRY_SMPTE_170M_YCC:
++		case DRM_MODE_COLORIMETRY_XVYCC_601:
++		case DRM_MODE_COLORIMETRY_SYCC_601:
++		case DRM_MODE_COLORIMETRY_OPYCC_601:
++		case DRM_MODE_COLORIMETRY_BT601_YCC:
++			csc = vc5_hdmi_csc_full_rgb_to_yuv_bt601[lim_range];
++			break;
++		case DRM_MODE_COLORIMETRY_BT2020_CYCC:
++		case DRM_MODE_COLORIMETRY_BT2020_YCC:
++		case DRM_MODE_COLORIMETRY_BT2020_RGB:
++		case DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65:
++		case DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER:
++			csc = vc5_hdmi_csc_full_rgb_to_yuv_bt2020[lim_range];
++			break;
++		}
+ 
+-		if_cfg |= VC4_SET_FIELD(VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_FORMAT_422_LEGACY,
+-					VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422);
++		if (vc4_state->output_format == VC4_HDMI_OUTPUT_YUV422) {
++			csc_ctl |= VC4_SET_FIELD(VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD,
++						 VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422) |
++				VC5_MT_CP_CSC_CTL_USE_444_TO_422 |
++				VC5_MT_CP_CSC_CTL_USE_RNG_SUPPRESSION;
++
++			csc_chan_ctl |= VC4_SET_FIELD(VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP_LEGACY_STYLE,
++						      VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP);
++
++			if_cfg |= VC4_SET_FIELD(VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_FORMAT_422_LEGACY,
++						VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422);
++
++			vc5_hdmi_set_csc_coeffs(vc4_hdmi, csc);
++		} else {
++			vc5_hdmi_set_csc_coeffs_swap(vc4_hdmi, csc);
++		}
+ 
+-		vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_full_yuv422_bt709);
+ 		break;
+ 
+ 	case VC4_HDMI_OUTPUT_RGB:
+ 		if_xbar = 0x354021;
+ 
+-		if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode))
+-			vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb);
+-		else
+-			vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity);
++		vc5_hdmi_set_csc_coeffs(vc4_hdmi,
++					vc5_hdmi_csc_full_rgb_to_rgb[lim_range]);
+ 		break;
+ 
+ 	default:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch b/target/linux/bcm27xx/patches-5.15/950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch
new file mode 100644
index 0000000000..715f9b1930
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch
@@ -0,0 +1,211 @@
+From 7c0802428580f42e538dc8dcff8e5fbed80a5202 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Mon, 14 Mar 2022 17:56:10 +0000
+Subject: [PATCH] vc4/drm: vc4_plane: Keep fractional source coords
+ inside state
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_drv.h   |  2 +-
+ drivers/gpu/drm/vc4/vc4_plane.c | 67 ++++++++++++++++-----------------
+ 2 files changed, 34 insertions(+), 35 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -386,7 +386,7 @@ struct vc4_plane_state {
+ 
+ 	/* Clipped coordinates of the plane on the display. */
+ 	int crtc_x, crtc_y, crtc_w, crtc_h;
+-	/* Clipped area being scanned from in the FB. */
++	/* Clipped area being scanned from in the FB in u16.16 format */
+ 	u32 src_x, src_y;
+ 
+ 	u32 src_w[2], src_h[2];
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -179,9 +179,9 @@ static const struct hvs_format *vc4_get_
+ 
+ static enum vc4_scaling_mode vc4_get_scaling_mode(u32 src, u32 dst)
+ {
+-	if (dst == src)
++	if (dst == src >> 16)
+ 		return VC4_SCALING_NONE;
+-	if (3 * dst >= 2 * src)
++	if (3 * dst >= 2 * (src >> 16))
+ 		return VC4_SCALING_PPF;
+ 	else
+ 		return VC4_SCALING_TPZ;
+@@ -388,14 +388,10 @@ static int vc4_plane_setup_clipping_and_
+ 	for (i = 0; i < num_planes; i++)
+ 		vc4_state->offsets[i] = bo->paddr + fb->offsets[i];
+ 
+-	/* We don't support subpixel source positioning for scaling,
+-	 * but fractional coordinates can be generated by clipping
+-	 * so just round for now
+-	 */
+-	vc4_state->src_x = DIV_ROUND_CLOSEST(state->src.x1, 1<<16);
+-	vc4_state->src_y = DIV_ROUND_CLOSEST(state->src.y1, 1<<16);
+-	vc4_state->src_w[0] = DIV_ROUND_CLOSEST(state->src.x2, 1<<16) - vc4_state->src_x;
+-	vc4_state->src_h[0] = DIV_ROUND_CLOSEST(state->src.y2, 1<<16) - vc4_state->src_y;
++	vc4_state->src_x = state->src.x1;
++	vc4_state->src_y = state->src.y1;
++	vc4_state->src_w[0] = state->src.x2 - vc4_state->src_x;
++	vc4_state->src_h[0] = state->src.y2 - vc4_state->src_y;
+ 
+ 	vc4_state->crtc_x = state->dst.x1;
+ 	vc4_state->crtc_y = state->dst.y1;
+@@ -448,7 +444,7 @@ static void vc4_write_tpz(struct vc4_pla
+ {
+ 	u32 scale, recip;
+ 
+-	scale = (1 << 16) * src / dst;
++	scale = src / dst;
+ 
+ 	/* The specs note that while the reciprocal would be defined
+ 	 * as (1<<32)/scale, ~0 is close enough.
+@@ -494,7 +490,7 @@ static u32 vc4_lbm_size(struct drm_plane
+ 	if (vc4_state->x_scaling[0] == VC4_SCALING_TPZ)
+ 		pix_per_line = vc4_state->crtc_w;
+ 	else
+-		pix_per_line = vc4_state->src_w[0];
++		pix_per_line = vc4_state->src_w[0] >> 16;
+ 
+ 	if (!vc4_state->is_yuv) {
+ 		if (vc4_state->y_scaling[0] == VC4_SCALING_TPZ)
+@@ -585,7 +581,8 @@ static void vc4_plane_calc_load(struct d
+ 	for (i = 0; i < fb->format->num_planes; i++) {
+ 		/* Even if the bandwidth/plane required for a single frame is
+ 		 *
+-		 * vc4_state->src_w[i] * vc4_state->src_h[i] * cpp * vrefresh
++		 * (vc4_state->src_w[i] >> 16) * (vc4_state->src_h[i] >> 16) *
++		 *  cpp * vrefresh
+ 		 *
+ 		 * when downscaling, we have to read more pixels per line in
+ 		 * the time frame reserved for a single line, so the bandwidth
+@@ -594,11 +591,11 @@ static void vc4_plane_calc_load(struct d
+ 		 * load by this number. We're likely over-estimating the read
+ 		 * demand, but that's better than under-estimating it.
+ 		 */
+-		vscale_factor = DIV_ROUND_UP(vc4_state->src_h[i],
++		vscale_factor = DIV_ROUND_UP(vc4_state->src_h[i] >> 16,
+ 					     vc4_state->crtc_h);
+-		vc4_state->membus_load += vc4_state->src_w[i] *
+-					  vc4_state->src_h[i] * vscale_factor *
+-					  fb->format->cpp[i];
++		vc4_state->membus_load += (vc4_state->src_w[i] >> 16) *
++					  (vc4_state->src_h[i] >> 16) *
++					  vscale_factor * fb->format->cpp[i];
+ 		vc4_state->hvs_load += vc4_state->crtc_h * vc4_state->crtc_w;
+ 	}
+ 
+@@ -751,7 +748,8 @@ static int vc4_plane_mode_set(struct drm
+ 	bool mix_plane_alpha;
+ 	bool covers_screen;
+ 	u32 scl0, scl1, pitch0;
+-	u32 tiling, src_y;
++	u32 tiling, src_x, src_y;
++	u32 width, height;
+ 	u32 hvs_format = format->hvs;
+ 	unsigned int rotation;
+ 	int ret, i;
+@@ -763,6 +761,9 @@ static int vc4_plane_mode_set(struct drm
+ 	if (ret)
+ 		return ret;
+ 
++	width = vc4_state->src_w[0] >> 16;
++	height = vc4_state->src_h[0] >> 16;
++
+ 	/* SCL1 is used for Cb/Cr scaling of planar formats.  For RGB
+ 	 * and 4:4:4, scl1 should be set to scl0 so both channels of
+ 	 * the scaler do the same thing.  For YUV, the Y plane needs
+@@ -783,9 +784,11 @@ static int vc4_plane_mode_set(struct drm
+ 					 DRM_MODE_REFLECT_Y);
+ 
+ 	/* We must point to the last line when Y reflection is enabled. */
+-	src_y = vc4_state->src_y;
++	src_y = vc4_state->src_y >> 16;
+ 	if (rotation & DRM_MODE_REFLECT_Y)
+-		src_y += vc4_state->src_h[0] - 1;
++		src_y += height - 1;
++
++	src_x = vc4_state->src_x >> 16;
+ 
+ 	switch (base_format_mod) {
+ 	case DRM_FORMAT_MOD_LINEAR:
+@@ -800,7 +803,7 @@ static int vc4_plane_mode_set(struct drm
+ 						 (i ? v_subsample : 1) *
+ 						 fb->pitches[i];
+ 
+-			vc4_state->offsets[i] += vc4_state->src_x /
++			vc4_state->offsets[i] += src_x /
+ 						 (i ? h_subsample : 1) *
+ 						 fb->format->cpp[i];
+ 		}
+@@ -823,7 +826,7 @@ static int vc4_plane_mode_set(struct drm
+ 		 *	pitch * tile_h == tile_size * tiles_per_row
+ 		 */
+ 		u32 tiles_w = fb->pitches[0] >> (tile_size_shift - tile_h_shift);
+-		u32 tiles_l = vc4_state->src_x >> tile_w_shift;
++		u32 tiles_l = src_x >> tile_w_shift;
+ 		u32 tiles_r = tiles_w - tiles_l;
+ 		u32 tiles_t = src_y >> tile_h_shift;
+ 		/* Intra-tile offsets, which modify the base address (the
+@@ -833,7 +836,7 @@ static int vc4_plane_mode_set(struct drm
+ 		u32 tile_y = (src_y >> 4) & 1;
+ 		u32 subtile_y = (src_y >> 2) & 3;
+ 		u32 utile_y = src_y & 3;
+-		u32 x_off = vc4_state->src_x & tile_w_mask;
++		u32 x_off = src_x & tile_w_mask;
+ 		u32 y_off = src_y & tile_h_mask;
+ 
+ 		/* When Y reflection is requested we must set the
+@@ -929,7 +932,7 @@ static int vc4_plane_mode_set(struct drm
+ 				 * of the 12-pixels in that 128-bit word is the
+ 				 * first pixel to be used
+ 				 */
+-				u32 remaining_pixels = vc4_state->src_x % 96;
++				u32 remaining_pixels = src_x % 96;
+ 				u32 aligned = remaining_pixels / 12;
+ 				u32 last_bits = remaining_pixels % 12;
+ 
+@@ -951,12 +954,12 @@ static int vc4_plane_mode_set(struct drm
+ 					return -EINVAL;
+ 				}
+ 				pix_per_tile = tile_w / fb->format->cpp[0];
+-				x_off = (vc4_state->src_x % pix_per_tile) /
++				x_off = (src_x % pix_per_tile) /
+ 					(i ? h_subsample : 1) *
+ 					fb->format->cpp[i];
+ 			}
+ 
+-			tile = vc4_state->src_x / pix_per_tile;
++			tile = src_x / pix_per_tile;
+ 
+ 			vc4_state->offsets[i] += param * tile_w * tile;
+ 			vc4_state->offsets[i] += src_y /
+@@ -1017,10 +1020,8 @@ static int vc4_plane_mode_set(struct drm
+ 		vc4_dlist_write(vc4_state,
+ 				(mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) |
+ 				vc4_hvs4_get_alpha_blend_mode(state) |
+-				VC4_SET_FIELD(vc4_state->src_w[0],
+-					      SCALER_POS2_WIDTH) |
+-				VC4_SET_FIELD(vc4_state->src_h[0],
+-					      SCALER_POS2_HEIGHT));
++				VC4_SET_FIELD(width, SCALER_POS2_WIDTH) |
++				VC4_SET_FIELD(height, SCALER_POS2_HEIGHT));
+ 
+ 		/* Position Word 3: Context.  Written by the HVS. */
+ 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
+@@ -1078,10 +1079,8 @@ static int vc4_plane_mode_set(struct drm
+ 		/* Position Word 2: Source Image Size */
+ 		vc4_state->pos2_offset = vc4_state->dlist_count;
+ 		vc4_dlist_write(vc4_state,
+-				VC4_SET_FIELD(vc4_state->src_w[0],
+-					      SCALER5_POS2_WIDTH) |
+-				VC4_SET_FIELD(vc4_state->src_h[0],
+-					      SCALER5_POS2_HEIGHT));
++				VC4_SET_FIELD(width, SCALER5_POS2_WIDTH) |
++				VC4_SET_FIELD(height, SCALER5_POS2_HEIGHT));
+ 
+ 		/* Position Word 3: Context.  Written by the HVS. */
+ 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0788-vc4-drm-Handle-fractional-coordinates-using-the-phas.patch b/target/linux/bcm27xx/patches-5.15/950-0788-vc4-drm-Handle-fractional-coordinates-using-the-phas.patch
new file mode 100644
index 0000000000..bfd8b07a29
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0788-vc4-drm-Handle-fractional-coordinates-using-the-phas.patch
@@ -0,0 +1,105 @@
+From 7135599a0b764e3579287763f160d82bb2901c45 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Fri, 9 Apr 2021 15:00:40 +0100
+Subject: [PATCH] vc4/drm: Handle fractional coordinates using the
+ phase field
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 61 ++++++++++++++++++++++++++++++---
+ 1 file changed, 56 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -458,14 +458,47 @@ static void vc4_write_tpz(struct vc4_pla
+ 			VC4_SET_FIELD(recip, SCALER_TPZ1_RECIP));
+ }
+ 
+-static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst)
++/* phase magnitude bits */
++#define PHASE_BITS 6
++
++static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst, u32 xy, int channel)
+ {
+-	u32 scale = (1 << 16) * src / dst;
++	u32 scale = src / dst;
++	s32 offset, offset2;
++	s32 phase;
++
++	/* Start the phase at 1/2 pixel from the 1st pixel at src_x.
++	   1/4 pixel for YUV. */
++	if (channel) {
++		/* the phase is relative to scale_src->x, so shift it for display list's x value */
++		offset = (xy & 0x1ffff) >> (16 - PHASE_BITS) >> 1;
++		offset += -(1 << PHASE_BITS >> 2);
++	} else {
++		/* the phase is relative to scale_src->x, so shift it for display list's x value */
++		offset = (xy & 0xffff) >> (16 - PHASE_BITS);
++		offset += -(1 << PHASE_BITS >> 1);
++
++		/* This is a kludge to make sure the scaling factors are consitent with YUV's luma scaling.
++		   we lose 1bit precision because of this. */
++		scale &= ~1;
++	}
++
++	/* There may be a also small error introduced by precision of scale.
++	   Add half of that as a compromise */
++	offset2 = src - dst * scale;
++	offset2 >>= 16 - PHASE_BITS;
++	phase = offset + (offset2 >> 1);
++
++	/* Ensure +ve values don't touch the sign bit, then truncate negative values */
++	if (phase >= 1 << PHASE_BITS)
++		phase = (1 << PHASE_BITS) - 1;
++
++	phase &= SCALER_PPF_IPHASE_MASK;
+ 
+ 	vc4_dlist_write(vc4_state,
+ 			SCALER_PPF_AGC |
+ 			VC4_SET_FIELD(scale, SCALER_PPF_SCALE) |
+-			VC4_SET_FIELD(0, SCALER_PPF_IPHASE));
++			VC4_SET_FIELD(phase, SCALER_PPF_IPHASE));
+ }
+ 
+ static u32 vc4_lbm_size(struct drm_plane_state *state)
+@@ -524,13 +557,13 @@ static void vc4_write_scaling_parameters
+ 	/* Ch0 H-PPF Word 0: Scaling Parameters */
+ 	if (vc4_state->x_scaling[channel] == VC4_SCALING_PPF) {
+ 		vc4_write_ppf(vc4_state,
+-			      vc4_state->src_w[channel], vc4_state->crtc_w);
++			      vc4_state->src_w[channel], vc4_state->crtc_w, vc4_state->src_x, channel);
+ 	}
+ 
+ 	/* Ch0 V-PPF Words 0-1: Scaling Parameters, Context */
+ 	if (vc4_state->y_scaling[channel] == VC4_SCALING_PPF) {
+ 		vc4_write_ppf(vc4_state,
+-			      vc4_state->src_h[channel], vc4_state->crtc_h);
++			      vc4_state->src_h[channel], vc4_state->crtc_h, vc4_state->src_y, channel);
+ 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
+ 	}
+ 
+@@ -978,6 +1011,24 @@ static int vc4_plane_mode_set(struct drm
+ 		return -EINVAL;
+ 	}
+ 
++	/* fetch an extra pixel if we don't actually line up with the left edge. */
++	if ((vc4_state->src_x & 0xffff) && vc4_state->src_x < (state->fb->width << 16))
++		width++;
++
++	/* same for the right side */
++	if (((vc4_state->src_x + vc4_state->src_w[0]) & 0xffff) &&
++	       vc4_state->src_x + vc4_state->src_w[0] < (state->fb->width << 16))
++		width++;
++
++	/* now for the top */
++	if ((vc4_state->src_y & 0xffff) && vc4_state->src_y < (state->fb->height << 16))
++		height++;
++
++	/* and the bottom */
++	if (((vc4_state->src_y + vc4_state->src_h[0]) & 0xffff) &&
++	       vc4_state->src_y + vc4_state->src_h[0] < (state->fb->height << 16))
++		height++;
++
+ 	/* Don't waste cycles mixing with plane alpha if the set alpha
+ 	 * is opaque or there is no per-pixel alpha information.
+ 	 * In any case we use the alpha property value as the fixed alpha.
diff --git a/target/linux/bcm27xx/patches-5.15/950-0789-drm-Add-chroma-siting-properties.patch b/target/linux/bcm27xx/patches-5.15/950-0789-drm-Add-chroma-siting-properties.patch
new file mode 100644
index 0000000000..a6e03d3b6b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0789-drm-Add-chroma-siting-properties.patch
@@ -0,0 +1,170 @@
+From 97a1ab8087099a4293923e9359165aa414f43035 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Wed, 26 Jan 2022 15:58:13 +0000
+Subject: [PATCH] drm: Add chroma siting properties
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/drm_atomic_state_helper.c | 14 +++++++++
+ drivers/gpu/drm/drm_atomic_uapi.c         |  8 +++++
+ drivers/gpu/drm/drm_color_mgmt.c          | 36 +++++++++++++++++++++++
+ include/drm/drm_color_mgmt.h              |  3 ++
+ include/drm/drm_plane.h                   | 36 +++++++++++++++++++++++
+ 5 files changed, 97 insertions(+)
+
+--- a/drivers/gpu/drm/drm_atomic_state_helper.c
++++ b/drivers/gpu/drm/drm_atomic_state_helper.c
+@@ -265,6 +265,20 @@ void __drm_atomic_helper_plane_state_res
+ 			plane_state->color_range = val;
+ 	}
+ 
++	if (plane->chroma_siting_h_property) {
++		if (!drm_object_property_get_default_value(&plane->base,
++							   plane->chroma_siting_h_property,
++							   &val))
++			plane_state->chroma_siting_h = val;
++	}
++
++	if (plane->chroma_siting_v_property) {
++		if (!drm_object_property_get_default_value(&plane->base,
++							   plane->chroma_siting_v_property,
++							   &val))
++			plane_state->chroma_siting_v = val;
++	}
++
+ 	if (plane->zpos_property) {
+ 		if (!drm_object_property_get_default_value(&plane->base,
+ 							   plane->zpos_property,
+--- a/drivers/gpu/drm/drm_atomic_uapi.c
++++ b/drivers/gpu/drm/drm_atomic_uapi.c
+@@ -598,6 +598,10 @@ static int drm_atomic_plane_set_property
+ 		state->color_encoding = val;
+ 	} else if (property == plane->color_range_property) {
+ 		state->color_range = val;
++	} else if (property == plane->chroma_siting_h_property) {
++		state->chroma_siting_h = val;
++	} else if (property == plane->chroma_siting_v_property) {
++		state->chroma_siting_v = val;
+ 	} else if (property == config->prop_fb_damage_clips) {
+ 		ret = drm_atomic_replace_property_blob_from_id(dev,
+ 					&state->fb_damage_clips,
+@@ -664,6 +668,10 @@ drm_atomic_plane_get_property(struct drm
+ 		*val = state->color_encoding;
+ 	} else if (property == plane->color_range_property) {
+ 		*val = state->color_range;
++	} else if (property == plane->chroma_siting_h_property) {
++		*val = state->chroma_siting_h;
++	} else if (property == plane->chroma_siting_v_property) {
++		*val = state->chroma_siting_v;
+ 	} else if (property == config->prop_fb_damage_clips) {
+ 		*val = (state->fb_damage_clips) ?
+ 			state->fb_damage_clips->base.id : 0;
+--- a/drivers/gpu/drm/drm_color_mgmt.c
++++ b/drivers/gpu/drm/drm_color_mgmt.c
+@@ -587,6 +587,42 @@ int drm_plane_create_color_properties(st
+ EXPORT_SYMBOL(drm_plane_create_color_properties);
+ 
+ /**
++ * drm_plane_create_chroma_siting_properties - chroma siting related plane properties
++ * @plane: plane object
++ *
++ * Create and attach plane specific CHROMA_SITING
++ * properties to @plane.
++ */
++int drm_plane_create_chroma_siting_properties(struct drm_plane *plane,
++						int32_t default_chroma_siting_h,
++						int32_t default_chroma_siting_v)
++{
++	struct drm_device *dev = plane->dev;
++	struct drm_property *prop;
++
++	prop = drm_property_create_range(dev, 0, "CHROMA_SITING_H",
++					0, 1<<16);
++	if (!prop)
++		return -ENOMEM;
++	plane->chroma_siting_h_property = prop;
++	drm_object_attach_property(&plane->base, prop, default_chroma_siting_h);
++
++	prop = drm_property_create_range(dev, 0, "CHROMA_SITING_V",
++					0, 1<<16);
++	if (!prop)
++		return -ENOMEM;
++	plane->chroma_siting_v_property = prop;
++	drm_object_attach_property(&plane->base, prop, default_chroma_siting_v);
++
++	if (plane->state) {
++		plane->state->chroma_siting_h = default_chroma_siting_h;
++		plane->state->chroma_siting_v = default_chroma_siting_v;
++	}
++	return 0;
++}
++EXPORT_SYMBOL(drm_plane_create_chroma_siting_properties);
++
++/**
+  * drm_color_lut_check - check validity of lookup table
+  * @lut: property blob containing LUT to check
+  * @tests: bitmask of tests to run
+--- a/include/drm/drm_color_mgmt.h
++++ b/include/drm/drm_color_mgmt.h
+@@ -93,6 +93,9 @@ int drm_plane_create_color_properties(st
+ 				      enum drm_color_encoding default_encoding,
+ 				      enum drm_color_range default_range);
+ 
++int drm_plane_create_chroma_siting_properties(struct drm_plane *plane,
++						int32_t default_chroma_siting_h, int32_t default_chroma_siting_v);
++
+ /**
+  * enum drm_color_lut_tests - hw-specific LUT tests to perform
+  *
+--- a/include/drm/drm_plane.h
++++ b/include/drm/drm_plane.h
+@@ -180,6 +180,24 @@ struct drm_plane_state {
+ 	enum drm_color_range color_range;
+ 
+ 	/**
++	 * @chroma_siting_h:
++	 *
++	 * Location of chroma samples horizontally compared to luma
++	 * 0 means chroma is sited with left luma
++	 * 0x8000 is interstitial. 0x10000 is sited with right luma
++	 */
++	int32_t chroma_siting_h;
++
++	/**
++	 * @chroma_siting_v:
++	 *
++	 * Location of chroma samples vertically compared to luma
++	 * 0 means chroma is sited with top luma
++	 * 0x8000 is interstitial. 0x10000 is sited with bottom luma
++	 */
++	int32_t chroma_siting_v;
++
++	/**
+ 	 * @fb_damage_clips:
+ 	 *
+ 	 * Blob representing damage (area in plane framebuffer that changed
+@@ -750,6 +768,24 @@ struct drm_plane {
+ 	 * scaling.
+ 	 */
+ 	struct drm_property *scaling_filter_property;
++
++	/**
++	 * @chroma_siting_h_property:
++	 *
++	 * Optional "CHROMA_SITING_H" property for specifying
++	 * chroma siting for YUV formats.
++	 * See drm_plane_create_chroma_siting_properties().
++	 */
++	struct drm_property *chroma_siting_h_property;
++
++	/**
++	 * @chroma_siting_v_property:
++	 *
++	 * Optional "CHROMA_SITING_V" property for specifying
++	 * chroma siting for YUV formats.
++	 * See drm_plane_create_chroma_siting_properties().
++	 */
++	struct drm_property *chroma_siting_v_property;
+ };
+ 
+ #define obj_to_plane(x) container_of(x, struct drm_plane, base)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0790-vc4-drm-plane-Make-use-of-chroma-siting-parameter.patch b/target/linux/bcm27xx/patches-5.15/950-0790-vc4-drm-plane-Make-use-of-chroma-siting-parameter.patch
new file mode 100644
index 0000000000..74ffa10200
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0790-vc4-drm-plane-Make-use-of-chroma-siting-parameter.patch
@@ -0,0 +1,60 @@
+From bb6fb3a029e8d745640aedce2ee57fc3fee73ea9 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 27 Jan 2022 15:32:04 +0000
+Subject: [PATCH] vc4/drm:plane: Make use of chroma siting parameter
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -461,17 +461,18 @@ static void vc4_write_tpz(struct vc4_pla
+ /* phase magnitude bits */
+ #define PHASE_BITS 6
+ 
+-static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst, u32 xy, int channel)
++static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst, u32 xy, int channel, int chroma_offset)
+ {
+ 	u32 scale = src / dst;
+ 	s32 offset, offset2;
+ 	s32 phase;
+ 
+ 	/* Start the phase at 1/2 pixel from the 1st pixel at src_x.
+-	   1/4 pixel for YUV. */
++	   1/4 pixel for YUV, plus the offset for chroma siting */
+ 	if (channel) {
+ 		/* the phase is relative to scale_src->x, so shift it for display list's x value */
+ 		offset = (xy & 0x1ffff) >> (16 - PHASE_BITS) >> 1;
++		offset -= chroma_offset >> (17 - PHASE_BITS);
+ 		offset += -(1 << PHASE_BITS >> 2);
+ 	} else {
+ 		/* the phase is relative to scale_src->x, so shift it for display list's x value */
+@@ -557,13 +558,15 @@ static void vc4_write_scaling_parameters
+ 	/* Ch0 H-PPF Word 0: Scaling Parameters */
+ 	if (vc4_state->x_scaling[channel] == VC4_SCALING_PPF) {
+ 		vc4_write_ppf(vc4_state,
+-			      vc4_state->src_w[channel], vc4_state->crtc_w, vc4_state->src_x, channel);
++			      vc4_state->src_w[channel], vc4_state->crtc_w, vc4_state->src_x, channel,
++			      state->chroma_siting_h);
+ 	}
+ 
+ 	/* Ch0 V-PPF Words 0-1: Scaling Parameters, Context */
+ 	if (vc4_state->y_scaling[channel] == VC4_SCALING_PPF) {
+ 		vc4_write_ppf(vc4_state,
+-			      vc4_state->src_h[channel], vc4_state->crtc_h, vc4_state->src_y, channel);
++			      vc4_state->src_h[channel], vc4_state->crtc_h, vc4_state->src_y, channel,
++			      state->chroma_siting_v);
+ 		vc4_dlist_write(vc4_state, 0xc0c0c0c0);
+ 	}
+ 
+@@ -1622,6 +1625,8 @@ struct drm_plane *vc4_plane_init(struct
+ 					  DRM_COLOR_YCBCR_BT709,
+ 					  DRM_COLOR_YCBCR_LIMITED_RANGE);
+ 
++	drm_plane_create_chroma_siting_properties(plane, 0, 0);
++
+ 	if (type == DRM_PLANE_TYPE_PRIMARY)
+ 		drm_plane_create_zpos_immutable_property(plane, 0);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0791-drivers-staging-bcm2835-isp-Clear-LS-table-handle-in.patch b/target/linux/bcm27xx/patches-5.15/950-0791-drivers-staging-bcm2835-isp-Clear-LS-table-handle-in.patch
new file mode 100644
index 0000000000..e30d52deb9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0791-drivers-staging-bcm2835-isp-Clear-LS-table-handle-in.patch
@@ -0,0 +1,37 @@
+From d0624b8de9fd26dafba82f6cad4a8cf828e8bfe9 Mon Sep 17 00:00:00 2001
+From: Naushir Patuck <naush@raspberrypi.com>
+Date: Tue, 22 Mar 2022 15:16:40 +0000
+Subject: [PATCH] drivers: staging: bcm2835-isp: Clear LS table handle
+ in the firmware
+
+When all nodes have stopped streaming, ensure the firmware has released its
+handle on the LS table dmabuf. This is done by passing a null handle in the
+LS params.
+
+Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
+---
+ .../vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c    | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+--- a/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
++++ b/drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
+@@ -655,6 +655,19 @@ static void bcm2835_isp_node_stop_stream
+ 	atomic_dec(&dev->num_streaming);
+ 	/* If all ports disabled, then disable the component */
+ 	if (atomic_read(&dev->num_streaming) == 0) {
++		struct bcm2835_isp_lens_shading ls;
++		/*
++		 * The ISP component on the firmware has a reference to the
++		 * dmabuf handle for the lens shading table.  Pass a null handle
++		 * to remove that reference now.
++		 */
++		memset(&ls, 0, sizeof(ls));
++		/* Must set a valid grid size for the FW */
++		ls.grid_cell_size = 16;
++		set_isp_param(&dev->node[0],
++			      MMAL_PARAMETER_LENS_SHADING_OVERRIDE,
++			      &ls, sizeof(ls));
++
+ 		ret = vchiq_mmal_component_disable(dev->mmal_instance,
+ 						   dev->component);
+ 		if (ret) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0792-dt-bindings-display-add-bindings-for-MIPI-DBI-compat.patch b/target/linux/bcm27xx/patches-5.15/950-0792-dt-bindings-display-add-bindings-for-MIPI-DBI-compat.patch
new file mode 100644
index 0000000000..41331381eb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0792-dt-bindings-display-add-bindings-for-MIPI-DBI-compat.patch
@@ -0,0 +1,176 @@
+From e39c2eeca4868a7cf34e34fb9a9ca7119c30372a Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Sun, 27 Feb 2022 13:47:09 +0100
+Subject: [PATCH] dt-bindings: display: add bindings for MIPI DBI
+ compatible SPI panels
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+commit 2f3468b upstream.
+
+Add binding for MIPI DBI compatible SPI panels.
+
+v6:
+- Fix indentation (Rob)
+
+v5:
+- Add sainsmart18 to compatible items (Rob)
+- Expand write-only description (Sam)
+
+v4:
+- There should only be two compatible (Maxime)
+- s/panel-dbi-spi/panel-mipi-dbi-spi/in compatible
+
+v3:
+- Move properties to Device Tree (Maxime)
+- Use contains for compatible (Maxime)
+- Add backlight property to example
+- Flesh out description
+
+v2:
+- Fix path for panel-common.yaml
+- Use unevaluatedProperties
+- Drop properties which are in the allOf section
+- Drop model property (Rob)
+
+Acked-by: Maxime Ripard <maxime@cerno.tech>
+Acked-by: Sam Ravnborg <sam@ravnborg.org>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20220227124713.39766-2-noralf@tronnes.org
+---
+ .../display/panel/panel-mipi-dbi-spi.yaml     | 126 ++++++++++++++++++
+ 1 file changed, 126 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml
+@@ -0,0 +1,126 @@
++# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/display/panel/panel-mipi-dbi-spi.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: MIPI DBI SPI Panel
++
++maintainers:
++  - Noralf Trønnes <noralf@tronnes.org>
++
++description: |
++  This binding is for display panels using a MIPI DBI compatible controller
++  in SPI mode.
++
++  The MIPI Alliance Standard for Display Bus Interface defines the electrical
++  and logical interfaces for display controllers historically used in mobile
++  phones. The standard defines 4 display architecture types and this binding is
++  for type 1 which has full frame memory. There are 3 interface types in the
++  standard and type C is the serial interface.
++
++  The standard defines the following interface signals for type C:
++  - Power:
++    - Vdd: Power supply for display module
++    - Vddi: Logic level supply for interface signals
++    Combined into one in this binding called: power-supply
++  - Interface:
++    - CSx: Chip select
++    - SCL: Serial clock
++    - Dout: Serial out
++    - Din: Serial in
++    - SDA: Bidrectional in/out
++    - D/CX: Data/command selection, high=data, low=command
++      Called dc-gpios in this binding.
++    - RESX: Reset when low
++      Called reset-gpios in this binding.
++
++  The type C interface has 3 options:
++
++    - Option 1: 9-bit mode and D/CX as the 9th bit
++      |              Command              |  the next command or following data  |
++      |<0><D7><D6><D5><D4><D3><D2><D1><D0>|<D/CX><D7><D6><D5><D4><D3><D2><D1><D0>|
++
++    - Option 2: 16-bit mode and D/CX as a 9th bit
++      |              Command or data                              |
++      |<X><X><X><X><X><X><X><D/CX><D7><D6><D5><D4><D3><D2><D1><D0>|
++
++    - Option 3: 8-bit mode and D/CX as a separate interface line
++      |        Command or data         |
++      |<D7><D6><D5><D4><D3><D2><D1><D0>|
++
++  The panel resolution is specified using the panel-timing node properties
++  hactive (width) and vactive (height). The other mandatory panel-timing
++  properties should be set to zero except clock-frequency which can be
++  optionally set to inform about the actual pixel clock frequency.
++
++  If the panel is wired to the controller at an offset specify this using
++  hback-porch (x-offset) and vback-porch (y-offset).
++
++allOf:
++  - $ref: panel-common.yaml#
++  - $ref: /schemas/spi/spi-peripheral-props.yaml#
++
++properties:
++  compatible:
++    items:
++      - enum:
++          - sainsmart18
++      - const: panel-mipi-dbi-spi
++
++  write-only:
++    type: boolean
++    description:
++      Controller is not readable (ie. Din (MISO on the SPI interface) is not
++      wired up).
++
++  dc-gpios:
++    maxItems: 1
++    description: |
++      Controller data/command selection (D/CX) in 4-line SPI mode.
++      If not set, the controller is in 3-line SPI mode.
++
++required:
++  - compatible
++  - reg
++  - panel-timing
++
++unevaluatedProperties: false
++
++examples:
++  - |
++    #include <dt-bindings/gpio/gpio.h>
++
++    spi {
++        #address-cells = <1>;
++        #size-cells = <0>;
++
++        display@0{
++            compatible = "sainsmart18", "panel-mipi-dbi-spi";
++            reg = <0>;
++            spi-max-frequency = <40000000>;
++
++            dc-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>;
++            reset-gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
++            write-only;
++
++            backlight = <&backlight>;
++
++            width-mm = <35>;
++            height-mm = <28>;
++
++            panel-timing {
++                hactive = <160>;
++                vactive = <128>;
++                hback-porch = <0>;
++                vback-porch = <0>;
++                clock-frequency = <0>;
++                hfront-porch = <0>;
++                hsync-len = <0>;
++                vfront-porch = <0>;
++                vsync-len = <0>;
++            };
++        };
++    };
++
++...
diff --git a/target/linux/bcm27xx/patches-5.15/950-0793-drm-modes-Add-of_get_drm_panel_display_mode.patch b/target/linux/bcm27xx/patches-5.15/950-0793-drm-modes-Add-of_get_drm_panel_display_mode.patch
new file mode 100644
index 0000000000..57c7dd6662
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0793-drm-modes-Add-of_get_drm_panel_display_mode.patch
@@ -0,0 +1,112 @@
+From ab0dac9b018f82dfb5696e9671734178d226872f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Sun, 27 Feb 2022 13:47:11 +0100
+Subject: [PATCH] drm/modes: Add of_get_drm_panel_display_mode()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+commit 95ae342 upstream.
+
+Add a function to get a drm_display_mode from a panel-timing
+device tree subnode.
+
+Suggested-by: Sam Ravnborg <sam@ravnborg.org>
+Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20220227124713.39766-4-noralf@tronnes.org
+---
+ drivers/gpu/drm/drm_modes.c | 49 +++++++++++++++++++++++++++++++++++++
+ include/drm/drm_modes.h     |  8 ++++++
+ 2 files changed, 57 insertions(+)
+
+--- a/drivers/gpu/drm/drm_modes.c
++++ b/drivers/gpu/drm/drm_modes.c
+@@ -35,6 +35,7 @@
+ #include <linux/list_sort.h>
+ #include <linux/export.h>
+ 
++#include <video/of_display_timing.h>
+ #include <video/of_videomode.h>
+ #include <video/videomode.h>
+ 
+@@ -727,6 +728,54 @@ int of_get_drm_display_mode(struct devic
+ 	return 0;
+ }
+ EXPORT_SYMBOL_GPL(of_get_drm_display_mode);
++
++/**
++ * of_get_drm_panel_display_mode - get a panel-timing drm_display_mode from devicetree
++ * @np: device_node with the panel-timing specification
++ * @dmode: will be set to the return value
++ * @bus_flags: information about pixelclk, sync and DE polarity
++ *
++ * The Device Tree properties width-mm and height-mm will be read and set on
++ * the display mode if they are present.
++ *
++ * Returns:
++ * Zero on success, negative error code on failure.
++ */
++int of_get_drm_panel_display_mode(struct device_node *np,
++				  struct drm_display_mode *dmode, u32 *bus_flags)
++{
++	u32 width_mm = 0, height_mm = 0;
++	struct display_timing timing;
++	struct videomode vm;
++	int ret;
++
++	ret = of_get_display_timing(np, "panel-timing", &timing);
++	if (ret)
++		return ret;
++
++	videomode_from_timing(&timing, &vm);
++
++	memset(dmode, 0, sizeof(*dmode));
++	drm_display_mode_from_videomode(&vm, dmode);
++	if (bus_flags)
++		drm_bus_flags_from_videomode(&vm, bus_flags);
++
++	ret = of_property_read_u32(np, "width-mm", &width_mm);
++	if (ret && ret != -EINVAL)
++		return ret;
++
++	ret = of_property_read_u32(np, "height-mm", &height_mm);
++	if (ret && ret != -EINVAL)
++		return ret;
++
++	dmode->width_mm = width_mm;
++	dmode->height_mm = height_mm;
++
++	drm_mode_debug_printmodeline(dmode);
++
++	return 0;
++}
++EXPORT_SYMBOL_GPL(of_get_drm_panel_display_mode);
+ #endif /* CONFIG_OF */
+ #endif /* CONFIG_VIDEOMODE_HELPERS */
+ 
+--- a/include/drm/drm_modes.h
++++ b/include/drm/drm_modes.h
+@@ -466,6 +466,8 @@ void drm_bus_flags_from_videomode(const
+ int of_get_drm_display_mode(struct device_node *np,
+ 			    struct drm_display_mode *dmode, u32 *bus_flags,
+ 			    int index);
++int of_get_drm_panel_display_mode(struct device_node *np,
++				  struct drm_display_mode *dmode, u32 *bus_flags);
+ #else
+ static inline int of_get_drm_display_mode(struct device_node *np,
+ 					  struct drm_display_mode *dmode,
+@@ -473,6 +475,12 @@ static inline int of_get_drm_display_mod
+ {
+ 	return -EINVAL;
+ }
++
++static inline int of_get_drm_panel_display_mode(struct device_node *np,
++						struct drm_display_mode *dmode, u32 *bus_flags)
++{
++	return -EINVAL;
++}
+ #endif
+ 
+ void drm_mode_set_name(struct drm_display_mode *mode);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0794-drm-mipi-dbi-Add-driver_private-member-to-struct-mip.patch b/target/linux/bcm27xx/patches-5.15/950-0794-drm-mipi-dbi-Add-driver_private-member-to-struct-mip.patch
new file mode 100644
index 0000000000..f0df18e0c1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0794-drm-mipi-dbi-Add-driver_private-member-to-struct-mip.patch
@@ -0,0 +1,45 @@
+From 9dae4a5ff13701f15f051e3911a83a1e497a4bc3 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Sun, 27 Feb 2022 13:47:12 +0100
+Subject: [PATCH] drm/mipi-dbi: Add driver_private member to struct
+ mipi_dbi_dev
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+commit 1e7e8e1 upstream.
+
+devm_drm_dev_alloc() can't allocate structures that embed a structure
+which then again embeds drm_device. Workaround this by adding a
+driver_private pointer to struct mipi_dbi_dev which the driver can use for
+its additional state.
+
+v3:
+- Add documentation
+
+Acked-by: Maxime Ripard <maxime@cerno.tech>
+Acked-by: Sam Ravnborg <sam@ravnborg.org>
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20220227124713.39766-5-noralf@tronnes.org
+---
+ include/drm/drm_mipi_dbi.h | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/include/drm/drm_mipi_dbi.h
++++ b/include/drm/drm_mipi_dbi.h
+@@ -130,6 +130,14 @@ struct mipi_dbi_dev {
+ 	 * @dbi: MIPI DBI interface
+ 	 */
+ 	struct mipi_dbi dbi;
++
++	/**
++	 * @driver_private: Driver private data.
++	 *                  Necessary for drivers with private data since devm_drm_dev_alloc()
++	 *                  can't allocate structures that embed a structure which then again
++	 *                  embeds drm_device.
++	 */
++	void *driver_private;
+ };
+ 
+ static inline struct mipi_dbi_dev *drm_to_mipi_dbi_dev(struct drm_device *drm)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0795-drm-tiny-Add-MIPI-DBI-compatible-SPI-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0795-drm-tiny-Add-MIPI-DBI-compatible-SPI-driver.patch
new file mode 100644
index 0000000000..6133070d1e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0795-drm-tiny-Add-MIPI-DBI-compatible-SPI-driver.patch
@@ -0,0 +1,515 @@
+From e73c6348ebeeb60bc92b316904c7ae5ca7b68fe1 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Sun, 27 Feb 2022 13:47:13 +0100
+Subject: [PATCH] drm/tiny: Add MIPI DBI compatible SPI driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+commit 0e65e2e upstream.
+
+Add a driver that will work with most MIPI DBI compatible SPI panels.
+This avoids adding a driver for every new MIPI DBI compatible controller
+that is to be used by Linux. The 'compatible' Device Tree property with
+a '.bin' suffix will be used to load a firmware file that contains the
+controller configuration.
+
+Example (driver will load sainsmart18.bin):
+
+display@0 {
+	compatible = "sainsmart18", "panel-mipi-dbi-spi";
+...
+};
+
+v5:
+- kconfig: s/DRM_KMS_CMA_HELPER/DRM_GEM_CMA_HELPER/ (Sam)
+- kconfig: Add select VIDEOMODE_HELPERS (Sam)
+- kconfig: Add wiki url in the description (Sam)
+- Split out and use of_get_drm_panel_display_mode()(Sam)
+- Only use the first compatible to look for a firmware file since the
+  binding mandates 2 compatibles.
+- Make having a firmware file mandatory so we can print an error
+  message if it's missing to improve the user experience. It's very
+  unlikely that a controller doesn't need to be initialized and if
+  it doesn't, it's possible to have a firmware file containing only
+  a DCS NOP.
+
+v4:
+- Move driver to drm/tiny where the other drivers of its kind are located.
+  The driver module will not be shared with a future DPI driver after all.
+
+v3:
+- Move properties to DT (Maxime)
+- The MIPI DPI spec has optional support for DPI where the controller is
+  configured over DBI. Rework the command functions so they can be moved
+  to drm_mipi_dbi and shared with a future panel-mipi-dpi-spi driver
+
+v2:
+- Drop model property and use compatible instead (Rob)
+- Add wiki entry in MAINTAINERS
+
+Acked-by: Maxime Ripard <maxime@cerno.tech>
+Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+Link: https://patchwork.freedesktop.org/patch/msgid/20220227124713.39766-6-noralf@tronnes.org
+---
+ MAINTAINERS                           |   8 +
+ drivers/gpu/drm/tiny/Kconfig          |  15 +
+ drivers/gpu/drm/tiny/Makefile         |   1 +
+ drivers/gpu/drm/tiny/panel-mipi-dbi.c | 398 ++++++++++++++++++++++++++
+ 4 files changed, 422 insertions(+)
+ create mode 100644 drivers/gpu/drm/tiny/panel-mipi-dbi.c
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -5976,6 +5976,14 @@ T:	git git://anongit.freedesktop.org/drm
+ F:	Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
+ F:	drivers/gpu/drm/tiny/mi0283qt.c
+ 
++DRM DRIVER FOR MIPI DBI compatible panels
++M:	Noralf Trønnes <noralf@tronnes.org>
++S:	Maintained
++W:	https://github.com/notro/panel-mipi-dbi/wiki
++T:	git git://anongit.freedesktop.org/drm/drm-misc
++F:	Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml
++F:	drivers/gpu/drm/tiny/panel-mipi-dbi.c
++
+ DRM DRIVER FOR MSM ADRENO GPU
+ M:	Rob Clark <robdclark@gmail.com>
+ M:	Sean Paul <sean@poorly.run>
+--- a/drivers/gpu/drm/tiny/Kconfig
++++ b/drivers/gpu/drm/tiny/Kconfig
+@@ -51,6 +51,21 @@ config DRM_GM12U320
+ 	 This is a KMS driver for projectors which use the GM12U320 chipset
+ 	 for video transfer over USB2/3, such as the Acer C120 mini projector.
+ 
++config DRM_PANEL_MIPI_DBI
++	tristate "DRM support for MIPI DBI compatible panels"
++	depends on DRM && SPI
++	select DRM_KMS_HELPER
++	select DRM_GEM_CMA_HELPER
++	select DRM_MIPI_DBI
++	select BACKLIGHT_CLASS_DEVICE
++	select VIDEOMODE_HELPERS
++	help
++	  Say Y here if you want to enable support for MIPI DBI compatible
++	  panels. The controller command setup can be provided using a
++	  firmware file. For more information see
++	  https://github.com/notro/panel-mipi-dbi/wiki.
++	  To compile this driver as a module, choose M here.
++
+ config DRM_SIMPLEDRM
+ 	tristate "Simple framebuffer driver"
+ 	depends on DRM
+--- a/drivers/gpu/drm/tiny/Makefile
++++ b/drivers/gpu/drm/tiny/Makefile
+@@ -4,6 +4,7 @@ obj-$(CONFIG_DRM_ARCPGU)		+= arcpgu.o
+ obj-$(CONFIG_DRM_BOCHS)			+= bochs.o
+ obj-$(CONFIG_DRM_CIRRUS_QEMU)		+= cirrus.o
+ obj-$(CONFIG_DRM_GM12U320)		+= gm12u320.o
++obj-$(CONFIG_DRM_PANEL_MIPI_DBI)	+= panel-mipi-dbi.o
+ obj-$(CONFIG_DRM_SIMPLEDRM)		+= simpledrm.o
+ obj-$(CONFIG_TINYDRM_HX8357D)		+= hx8357d.o
+ obj-$(CONFIG_TINYDRM_ILI9225)		+= ili9225.o
+--- /dev/null
++++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
+@@ -0,0 +1,398 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * DRM driver for MIPI DBI compatible display panels
++ *
++ * Copyright 2022 Noralf Trønnes
++ */
++
++#include <linux/backlight.h>
++#include <linux/delay.h>
++#include <linux/firmware.h>
++#include <linux/gpio/consumer.h>
++#include <linux/module.h>
++#include <linux/property.h>
++#include <linux/regulator/consumer.h>
++#include <linux/spi/spi.h>
++
++#include <drm/drm_atomic_helper.h>
++#include <drm/drm_drv.h>
++#include <drm/drm_fb_helper.h>
++#include <drm/drm_gem_atomic_helper.h>
++#include <drm/drm_gem_cma_helper.h>
++#include <drm/drm_managed.h>
++#include <drm/drm_mipi_dbi.h>
++#include <drm/drm_modes.h>
++#include <drm/drm_modeset_helper.h>
++
++#include <video/mipi_display.h>
++
++static const u8 panel_mipi_dbi_magic[15] = { 'M', 'I', 'P', 'I', ' ', 'D', 'B', 'I',
++					     0, 0, 0, 0, 0, 0, 0 };
++
++/*
++ * The display controller configuration is stored in a firmware file.
++ * The Device Tree 'compatible' property value with a '.bin' suffix is passed
++ * to request_firmware() to fetch this file.
++ */
++struct panel_mipi_dbi_config {
++	/* Magic string: panel_mipi_dbi_magic */
++	u8 magic[15];
++
++	/* Config file format version */
++	u8 file_format_version;
++
++	/*
++	 * MIPI commands to execute when the display pipeline is enabled.
++	 * This is used to configure the display controller.
++	 *
++	 * The commands are stored in a byte array with the format:
++	 *     command, num_parameters, [ parameter, ...], command, ...
++	 *
++	 * Some commands require a pause before the next command can be received.
++	 * Inserting a delay in the command sequence is done by using the NOP command with one
++	 * parameter: delay in miliseconds (the No Operation command is part of the MIPI Display
++	 * Command Set where it has no parameters).
++	 *
++	 * Example:
++	 *     command 0x11
++	 *     sleep 120ms
++	 *     command 0xb1 parameters 0x01, 0x2c, 0x2d
++	 *     command 0x29
++	 *
++	 * Byte sequence:
++	 *     0x11 0x00
++	 *     0x00 0x01 0x78
++	 *     0xb1 0x03 0x01 0x2c 0x2d
++	 *     0x29 0x00
++	 */
++	u8 commands[];
++};
++
++struct panel_mipi_dbi_commands {
++	const u8 *buf;
++	size_t len;
++};
++
++static struct panel_mipi_dbi_commands *
++panel_mipi_dbi_check_commands(struct device *dev, const struct firmware *fw)
++{
++	const struct panel_mipi_dbi_config *config = (struct panel_mipi_dbi_config *)fw->data;
++	struct panel_mipi_dbi_commands *commands;
++	size_t size = fw->size, commands_len;
++	unsigned int i = 0;
++
++	if (size < sizeof(*config) + 2) { /* At least 1 command */
++		dev_err(dev, "config: file size=%zu is too small\n", size);
++		return ERR_PTR(-EINVAL);
++	}
++
++	if (memcmp(config->magic, panel_mipi_dbi_magic, sizeof(config->magic))) {
++		dev_err(dev, "config: Bad magic: %15ph\n", config->magic);
++		return ERR_PTR(-EINVAL);
++	}
++
++	if (config->file_format_version != 1) {
++		dev_err(dev, "config: version=%u is not supported\n", config->file_format_version);
++		return ERR_PTR(-EINVAL);
++	}
++
++	drm_dev_dbg(dev, DRM_UT_DRIVER, "size=%zu version=%u\n", size, config->file_format_version);
++
++	commands_len = size - sizeof(*config);
++
++	while ((i + 1) < commands_len) {
++		u8 command = config->commands[i++];
++		u8 num_parameters = config->commands[i++];
++		const u8 *parameters = &config->commands[i];
++
++		i += num_parameters;
++		if (i > commands_len) {
++			dev_err(dev, "config: command=0x%02x num_parameters=%u overflows\n",
++				command, num_parameters);
++			return ERR_PTR(-EINVAL);
++		}
++
++		if (command == 0x00 && num_parameters == 1)
++			drm_dev_dbg(dev, DRM_UT_DRIVER, "sleep %ums\n", parameters[0]);
++		else
++			drm_dev_dbg(dev, DRM_UT_DRIVER, "command %02x %*ph\n",
++				    command, num_parameters, parameters);
++	}
++
++	if (i != commands_len) {
++		dev_err(dev, "config: malformed command array\n");
++		return ERR_PTR(-EINVAL);
++	}
++
++	commands = devm_kzalloc(dev, sizeof(*commands), GFP_KERNEL);
++	if (!commands)
++		return ERR_PTR(-ENOMEM);
++
++	commands->len = commands_len;
++	commands->buf = devm_kmemdup(dev, config->commands, commands->len, GFP_KERNEL);
++	if (!commands->buf)
++		return ERR_PTR(-ENOMEM);
++
++	return commands;
++}
++
++static struct panel_mipi_dbi_commands *panel_mipi_dbi_commands_from_fw(struct device *dev)
++{
++	struct panel_mipi_dbi_commands *commands;
++	const struct firmware *fw;
++	const char *compatible;
++	char fw_name[40];
++	int ret;
++
++	ret = of_property_read_string_index(dev->of_node, "compatible", 0, &compatible);
++	if (ret)
++		return ERR_PTR(ret);
++
++	snprintf(fw_name, sizeof(fw_name), "%s.bin", compatible);
++	ret = request_firmware(&fw, fw_name, dev);
++	if (ret) {
++		dev_err(dev, "No config file found for compatible '%s' (error=%d)\n",
++			compatible, ret);
++
++		return ERR_PTR(ret);
++	}
++
++	commands = panel_mipi_dbi_check_commands(dev, fw);
++	release_firmware(fw);
++
++	return commands;
++}
++
++static void panel_mipi_dbi_commands_execute(struct mipi_dbi *dbi,
++					    struct panel_mipi_dbi_commands *commands)
++{
++	unsigned int i = 0;
++
++	if (!commands)
++		return;
++
++	while (i < commands->len) {
++		u8 command = commands->buf[i++];
++		u8 num_parameters = commands->buf[i++];
++		const u8 *parameters = &commands->buf[i];
++
++		if (command == 0x00 && num_parameters == 1)
++			msleep(parameters[0]);
++		else if (num_parameters)
++			mipi_dbi_command_stackbuf(dbi, command, parameters, num_parameters);
++		else
++			mipi_dbi_command(dbi, command);
++
++		i += num_parameters;
++	}
++}
++
++static void panel_mipi_dbi_enable(struct drm_simple_display_pipe *pipe,
++				  struct drm_crtc_state *crtc_state,
++				  struct drm_plane_state *plane_state)
++{
++	struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
++	struct mipi_dbi *dbi = &dbidev->dbi;
++	int ret, idx;
++
++	if (!drm_dev_enter(pipe->crtc.dev, &idx))
++		return;
++
++	drm_dbg(pipe->crtc.dev, "\n");
++
++	ret = mipi_dbi_poweron_conditional_reset(dbidev);
++	if (ret < 0)
++		goto out_exit;
++	if (!ret)
++		panel_mipi_dbi_commands_execute(dbi, dbidev->driver_private);
++
++	mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
++out_exit:
++	drm_dev_exit(idx);
++}
++
++static const struct drm_simple_display_pipe_funcs panel_mipi_dbi_pipe_funcs = {
++	.enable = panel_mipi_dbi_enable,
++	.disable = mipi_dbi_pipe_disable,
++	.update = mipi_dbi_pipe_update,
++};
++
++DEFINE_DRM_GEM_CMA_FOPS(panel_mipi_dbi_fops);
++
++static const struct drm_driver panel_mipi_dbi_driver = {
++	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
++	.fops			= &panel_mipi_dbi_fops,
++	DRM_GEM_CMA_DRIVER_OPS_VMAP,
++	.debugfs_init		= mipi_dbi_debugfs_init,
++	.name			= "panel-mipi-dbi",
++	.desc			= "MIPI DBI compatible display panel",
++	.date			= "20220103",
++	.major			= 1,
++	.minor			= 0,
++};
++
++static int panel_mipi_dbi_get_mode(struct mipi_dbi_dev *dbidev, struct drm_display_mode *mode)
++{
++	struct device *dev = dbidev->drm.dev;
++	u16 hback_porch, vback_porch;
++	int ret;
++
++	ret = of_get_drm_panel_display_mode(dev->of_node, mode, NULL);
++	if (ret) {
++		dev_err(dev, "%pOF: failed to get panel-timing (error=%d)\n", dev->of_node, ret);
++		return ret;
++	}
++
++	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
++
++	hback_porch = mode->htotal - mode->hsync_end;
++	vback_porch = mode->vtotal - mode->vsync_end;
++
++	/*
++	 * Make sure width and height are set and that only back porch and
++	 * pixelclock are set in the other timing values. Also check that
++	 * width and height don't exceed the 16-bit value specified by MIPI DCS.
++	 */
++	if (!mode->hdisplay || !mode->vdisplay || mode->flags ||
++	    mode->hsync_end > mode->hdisplay || (hback_porch + mode->hdisplay) > 0xffff ||
++	    mode->vsync_end > mode->vdisplay || (vback_porch + mode->vdisplay) > 0xffff) {
++		dev_err(dev, "%pOF: panel-timing out of bounds\n", dev->of_node);
++		return -EINVAL;
++	}
++
++	/* The driver doesn't use the pixel clock but it is mandatory so fake one if not set */
++	if (!mode->clock)
++		mode->clock = mode->htotal * mode->vtotal * 60 / 1000;
++
++	dbidev->top_offset = vback_porch;
++	dbidev->left_offset = hback_porch;
++
++	return 0;
++}
++
++static int panel_mipi_dbi_spi_probe(struct spi_device *spi)
++{
++	struct device *dev = &spi->dev;
++	struct drm_display_mode mode;
++	struct mipi_dbi_dev *dbidev;
++	struct drm_device *drm;
++	struct mipi_dbi *dbi;
++	struct gpio_desc *dc;
++	int ret;
++
++	dbidev = devm_drm_dev_alloc(dev, &panel_mipi_dbi_driver, struct mipi_dbi_dev, drm);
++	if (IS_ERR(dbidev))
++		return PTR_ERR(dbidev);
++
++	dbi = &dbidev->dbi;
++	drm = &dbidev->drm;
++
++	ret = panel_mipi_dbi_get_mode(dbidev, &mode);
++	if (ret)
++		return ret;
++
++	dbidev->regulator = devm_regulator_get(dev, "power");
++	if (IS_ERR(dbidev->regulator))
++		return dev_err_probe(dev, PTR_ERR(dbidev->regulator),
++				     "Failed to get regulator 'power'\n");
++
++	dbidev->backlight = devm_of_find_backlight(dev);
++	if (IS_ERR(dbidev->backlight))
++		return dev_err_probe(dev, PTR_ERR(dbidev->backlight), "Failed to get backlight\n");
++
++	dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
++	if (IS_ERR(dbi->reset))
++		return dev_err_probe(dev, PTR_ERR(dbi->reset), "Failed to get GPIO 'reset'\n");
++
++	dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
++	if (IS_ERR(dc))
++		return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n");
++
++	ret = mipi_dbi_spi_init(spi, dbi, dc);
++	if (ret)
++		return ret;
++
++	if (device_property_present(dev, "write-only"))
++		dbi->read_commands = NULL;
++
++	dbidev->driver_private = panel_mipi_dbi_commands_from_fw(dev);
++	if (IS_ERR(dbidev->driver_private))
++		return PTR_ERR(dbidev->driver_private);
++
++	ret = mipi_dbi_dev_init(dbidev, &panel_mipi_dbi_pipe_funcs, &mode, 0);
++	if (ret)
++		return ret;
++
++	drm_mode_config_reset(drm);
++
++	ret = drm_dev_register(drm, 0);
++	if (ret)
++		return ret;
++
++	spi_set_drvdata(spi, drm);
++
++	drm_fbdev_generic_setup(drm, 0);
++
++	return 0;
++}
++
++static int panel_mipi_dbi_spi_remove(struct spi_device *spi)
++{
++	struct drm_device *drm = spi_get_drvdata(spi);
++
++	drm_dev_unplug(drm);
++	drm_atomic_helper_shutdown(drm);
++
++	return 0;
++}
++
++static void panel_mipi_dbi_spi_shutdown(struct spi_device *spi)
++{
++	drm_atomic_helper_shutdown(spi_get_drvdata(spi));
++}
++
++static int __maybe_unused panel_mipi_dbi_pm_suspend(struct device *dev)
++{
++	return drm_mode_config_helper_suspend(dev_get_drvdata(dev));
++}
++
++static int __maybe_unused panel_mipi_dbi_pm_resume(struct device *dev)
++{
++	drm_mode_config_helper_resume(dev_get_drvdata(dev));
++
++	return 0;
++}
++
++static const struct dev_pm_ops panel_mipi_dbi_pm_ops = {
++	SET_SYSTEM_SLEEP_PM_OPS(panel_mipi_dbi_pm_suspend, panel_mipi_dbi_pm_resume)
++};
++
++static const struct of_device_id panel_mipi_dbi_spi_of_match[] = {
++	{ .compatible = "panel-mipi-dbi-spi" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, panel_mipi_dbi_spi_of_match);
++
++static const struct spi_device_id panel_mipi_dbi_spi_id[] = {
++	{ "panel-mipi-dbi-spi", 0 },
++	{ },
++};
++MODULE_DEVICE_TABLE(spi, panel_mipi_dbi_spi_id);
++
++static struct spi_driver panel_mipi_dbi_spi_driver = {
++	.driver = {
++		.name = "panel-mipi-dbi-spi",
++		.owner = THIS_MODULE,
++		.of_match_table = panel_mipi_dbi_spi_of_match,
++		.pm = &panel_mipi_dbi_pm_ops,
++	},
++	.id_table = panel_mipi_dbi_spi_id,
++	.probe = panel_mipi_dbi_spi_probe,
++	.remove = panel_mipi_dbi_spi_remove,
++	.shutdown = panel_mipi_dbi_spi_shutdown,
++};
++module_spi_driver(panel_mipi_dbi_spi_driver);
++
++MODULE_DESCRIPTION("MIPI DBI compatible display panel driver");
++MODULE_AUTHOR("Noralf Trønnes");
++MODULE_LICENSE("GPL");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0796-overlays-Add-overlay-for-MIPI-DBI-displays.patch b/target/linux/bcm27xx/patches-5.15/950-0796-overlays-Add-overlay-for-MIPI-DBI-displays.patch
new file mode 100644
index 0000000000..d6b9cf3936
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0796-overlays-Add-overlay-for-MIPI-DBI-displays.patch
@@ -0,0 +1,280 @@
+From bf5020c3cbf3e799379c661e2f653ac572175d67 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Mon, 7 Mar 2022 17:05:49 +0100
+Subject: [PATCH] overlays: Add overlay for MIPI DBI displays
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add an overlay that can be used with all displays that have a
+MIPI DBI compatible controller (pixels over SPI).
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |  67 +++++++
+ .../dts/overlays/mipi-dbi-spi-overlay.dts     | 172 ++++++++++++++++++
+ 3 files changed, 240 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -135,6 +135,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	midi-uart5.dtbo \
+ 	minipitft13.dtbo \
+ 	miniuart-bt.dtbo \
++	mipi-dbi-spi.dtbo \
+ 	mlx90640.dtbo \
+ 	mmc.dtbo \
+ 	mpu6050.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2386,6 +2386,73 @@ Params: krnbt                   Set to "
+                                 driver without need of hciattach/btattach
+ 
+ 
++Name:   mipi-dbi-spi
++Info:   Overlay for SPI-connected MIPI DBI displays using the panel-mipi-dbi
++        driver. The driver will load a file /lib/firmware/panel.bin containing
++        the initialisation commands.
++
++        Example:
++          dtoverlay=mipi-dbi-spi,spi0-0,speed=70000000
++          dtparam=width=320,height=240
++          dtparam=reset-gpio=23,dc-gpio=24
++          dtparam=backlight-gpio=18
++
++        Compared to fbtft panel-mipi-dbi runs pixel data at spi-max-frequency
++        and init commands at 10MHz. This makes it possible to push the envelope
++        without messing up the controller configuration due to command
++        transmission errors.
++
++        For devices on spi1 or spi2, the interfaces should be enabled
++        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
++
++        See https://github.com/notro/panel-mipi-dbi/wiki for more info.
++
++Load:   dtoverlay=mipi-dbi-spi,<param>=<val>
++Params:
++        compatible              Set the compatible string to load a different
++                                firmware file. Both the panel compatible value
++                                used to load the firmware file and the value
++                                used to load the driver has to be set having a
++                                NUL (\0) separator between them.
++                                Example:
++                                dtparam=compatible=mypanel\0panel-mipi-dbi-spi
++        spi<n>-<m>              Configure device at spi<n>, cs<m>
++                                (boolean, required)
++        speed                   SPI bus speed in Hz (default 32000000)
++        cpha                    Shifted SPI clock phase (CPHA) mode
++        cpol                    Inverse SPI clock polarity (CPOL) mode
++        write-only              Controller is not readable
++                                (ie. MISO is not wired up).
++
++        width                   Panel width in pixels (required)
++        height                  Panel height in pixels (required)
++        width-mm                Panel width in mm
++        height-mm               Panel height in mm
++        x-offset                Panel x-offset in controller RAM
++        y-offset                Panel y-offset in controller RAM
++
++        clock-frequency         Panel clock frequency in Hz
++                                (optional, just informational).
++
++        reset-gpio              GPIO pin to be used for RESET
++        dc-gpio                 GPIO pin to be used for D/C
++
++        backlight-gpio          GPIO pin to be used for backlight control
++                                (default of none).
++        backlight-pwm           PWM channel to be used for backlight control
++                                (default of none). NB Disables audio headphone
++                                output as that also uses PWM.
++        backlight-pwm-chan      Choose channel on &pwm node for backlight
++                                control (default 0).
++        backlight-pwm-gpio      GPIO pin to be used for the PWM backlight. See
++                                pwm-2chan for valid options (default 18).
++        backlight-pwm-func      Pin function of GPIO used for the PWM backlight.
++                                See pwm-2chan for valid options (default 2).
++        backlight-def-brightness
++                                Set the default brightness. Normal range 1-16.
++                                (default 16).
++
++
+ Name:   mlx90640
+ Info:   Overlay for i2c connected mlx90640 thermal camera
+ Load:   dtoverlay=mlx90640
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts
+@@ -0,0 +1,172 @@
++/*
++ * mipi-dbi-spi-overlay.dts
++ */
++
++#include <dt-bindings/gpio/gpio.h>
++
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	spidev_fragment: fragment@0 {
++		target-path = "spi0/spidev@0";
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++
++	panel_fragment: fragment@1 {
++		target = <&spi0>;
++		__overlay__ {
++			/* needed to avoid dtc warning */
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			status = "okay";
++
++			panel: panel@0 {
++				compatible = "panel", "panel-mipi-dbi-spi";
++				reg = <0>;
++				spi-max-frequency = <32000000>;
++
++				timing: panel-timing {
++					hactive = <320>;
++					vactive = <240>;
++					hback-porch = <0>;
++					vback-porch = <0>;
++
++					clock-frequency = <0>;
++					hfront-porch = <0>;
++					hsync-len = <0>;
++					vfront-porch = <0>;
++					vsync-len = <0>;
++				};
++			};
++		};
++	};
++
++	fragment@10 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight_gpio>;
++		};
++	};
++
++	fragment@11 {
++		target-path = "/";
++		__dormant__  {
++			backlight_gpio: backlight_gpio {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
++			};
++		};
++	};
++
++	fragment@20 {
++		target = <&panel>;
++		__dormant__  {
++			backlight = <&backlight_pwm>;
++		};
++	};
++
++	fragment@21 {
++		target-path = "/";
++		__dormant__  {
++			backlight_pwm: backlight_pwm {
++				compatible = "pwm-backlight";
++				brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
++				default-brightness-level = <16>;
++				pwms = <&pwm 0 200000>;
++			};
++		};
++	};
++
++	fragment@22 {
++		target = <&pwm>;
++		__dormant__ {
++			pinctrl-names = "default";
++			pinctrl-0 = <&pwm_pins>;
++			assigned-clock-rates = <1000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@23 {
++		target = <&gpio>;
++		__dormant__ {
++			pwm_pins: pwm_pins {
++				brcm,pins = <18>;
++				brcm,function = <2>; /* Alt5 */
++			};
++		};
++	};
++
++	fragment@24 {
++		target = <&audio>;
++		__dormant__  {
++		    brcm,disable-headphones;
++		};
++	};
++
++	__overrides__ {
++		compatible    = <&panel>, "compatible";
++
++		spi0-0        = <&panel_fragment>, "target:0=",<&spi0>,
++				<&spidev_fragment>, "target-path=spi0/spidev@0",
++				<&panel>, "reg:0=0";
++		spi0-1        = <&panel_fragment>, "target:0=",<&spi0>,
++				<&spidev_fragment>, "target-path=spi0/spidev@1",
++				<&panel>, "reg:0=1";
++		spi1-0        = <&panel_fragment>, "target:0=",<&spi1>,
++				<&spidev_fragment>, "target-path=spi1/spidev@0",
++				<&panel>, "reg:0=0";
++		spi1-1        = <&panel_fragment>, "target:0=",<&spi1>,
++				<&spidev_fragment>, "target-path=spi1/spidev@1",
++				<&panel>, "reg:0=1";
++		spi1-2        = <&panel_fragment>, "target:0=",<&spi1>,
++				<&spidev_fragment>, "target-path=spi1/spidev@2",
++				<&panel>, "reg:0=2";
++		spi2-0        = <&panel_fragment>, "target:0=",<&spi2>,
++				<&spidev_fragment>, "target-path=spi2/spidev@0",
++				<&panel>, "reg:0=0";
++		spi2-1        = <&panel_fragment>, "target:0=",<&spi2>,
++				<&spidev_fragment>, "target-path=spi2/spidev@1",
++				<&panel>, "reg:0=1";
++		spi2-2        = <&panel_fragment>, "target:0=",<&spi2>,
++				<&spidev_fragment>, "target-path=spi2/spidev@2",
++				<&panel>, "reg:0=2";
++
++		speed         = <&panel>, "spi-max-frequency:0";
++		cpha          = <&panel>, "spi-cpha?";
++		cpol          = <&panel>, "spi-cpol?";
++
++		write-only    = <&panel>, "write-only?";
++
++		width         = <&timing>, "hactive:0";
++		height        = <&timing>, "vactive:0";
++		x-offset      = <&timing>, "hback-porch:0";
++		y-offset      = <&timing>, "vback-porch:0";
++		clock-frequency = <&timing>, "clock-frequency:0";
++
++		width-mm      = <&panel>, "width-mm:0";
++		height-mm     = <&panel>, "height-mm:0";
++
++		/* optional gpios */
++		reset-gpio    = <&panel>, "reset-gpios:0=", <&gpio>,
++				<&panel>, "reset-gpios:4",
++				<&panel>, "reset-gpios:8=0"; /* GPIO_ACTIVE_HIGH */
++		dc-gpio       = <&panel>, "dc-gpios:0=", <&gpio>,
++				<&panel>, "dc-gpios:4",
++				<&panel>, "dc-gpios:8=0"; /* GPIO_ACTIVE_HIGH */
++
++		backlight-gpio        = <0>, "+10+11",
++					<&backlight_gpio>, "gpios:4";
++		backlight-pwm         = <0>, "+20+21+22+23+24";
++		backlight-pwm-chan    = <&backlight_pwm>, "pwms:4";
++		backlight-pwm-gpio    = <&pwm_pins>, "brcm,pins:0";
++		backlight-pwm-func    = <&pwm_pins>, "brcm,function:0";
++		backlight-def-brightness = <&backlight_pwm>, "default-brightness-level:0";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0797-audioinjector.net-stereo-and-zero-use-dev_err_probe-.patch b/target/linux/bcm27xx/patches-5.15/950-0797-audioinjector.net-stereo-and-zero-use-dev_err_probe-.patch
new file mode 100644
index 0000000000..484e8d5041
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0797-audioinjector.net-stereo-and-zero-use-dev_err_probe-.patch
@@ -0,0 +1,29 @@
+From d460e8c1272c886639cbc1a5b054a980007dadc3 Mon Sep 17 00:00:00 2001
+From: Matt Flax <flatmax@flatmax.org>
+Date: Sun, 27 Mar 2022 22:42:47 +1100
+Subject: [PATCH] audioinjector.net: stereo and zero, use
+ dev_err_probe, report success
+
+Use dev_err_probe to follow best practice, and leave a message in
+the kernel log indicate the driver was started successfully.
+---
+ sound/soc/bcm/audioinjector-pi-soundcard.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/sound/soc/bcm/audioinjector-pi-soundcard.c
++++ b/sound/soc/bcm/audioinjector-pi-soundcard.c
+@@ -158,9 +158,11 @@ static int audioinjector_pi_soundcard_pr
+ 			}
+ 	}
+ 
+-	if ((ret = devm_snd_soc_register_card(&pdev->dev, card))) {
+-		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+-	}
++	if ((ret = devm_snd_soc_register_card(&pdev->dev, card)))
++		return dev_err_probe(&pdev->dev, ret, "%s\n", __func__);
++
++	dev_info(&pdev->dev, "successfully loaded\n");
++
+ 	return ret;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0798-overlays-rpi-display-Add-support-for-DRM-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0798-overlays-rpi-display-Add-support-for-DRM-driver.patch
new file mode 100644
index 0000000000..14aad60a1c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0798-overlays-rpi-display-Add-support-for-DRM-driver.patch
@@ -0,0 +1,136 @@
+From 33020d03596ae7767f278716ba539589b316299e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Sun, 27 Mar 2022 18:54:17 +0200
+Subject: [PATCH] overlays/rpi-display: Add support for DRM driver
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add a "drm" parameter that enables use of the drm/mi0283qt driver instead
+of fbtft/fb_ili9341. Also add a "backlight-pwm" parameter that can be used
+with the "drm" parameter.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ arch/arm/boot/dts/overlays/README             | 26 +++++++-
+ .../boot/dts/overlays/rpi-display-overlay.dts | 61 ++++++++++++++++++-
+ 2 files changed, 84 insertions(+), 3 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2913,14 +2913,36 @@ Params: <None>
+ 
+ Name:   rpi-display
+ Info:   RPi-Display - 2.8" Touch Display by Watterott
++        Linux has 2 drivers that support this display and this overlay supports
++        both.
++
++        Examples:
++          fbtft/fb_ili9341: dtoverlay=rpi-display
++          drm/mi0283qt: dtoverlay=rpi-display,drm,backlight-pwm,rotate=180
++
++        Some notable differences with the DRM driver compared to fbtft:
++        - The display is turned on when it's first used and not on driver load
++          as with fbtft. So if nothing uses the display it stays off.
++        - Can run with a higher SPI clock increasing framerate. This is possible
++          since the driver avoids messing up the controller configuration due to
++          transmission errors by running config commands at 10MHz and only pixel
++          data at full speed (occasional pixel glitch might occur).
++        - PWM backlight is supported.
++
+ Load:   dtoverlay=rpi-display,<param>=<val>
+ Params: speed                   Display SPI bus speed
+         rotate                  Display rotation {0,90,180,270}
+-        fps                     Delay between frame updates
+-        debug                   Debug output level {0-7}
++        fps                     Delay between frame updates (fbtft only)
++        debug                   Debug output level {0-7} (fbtft only)
+         xohms                   Touchpanel sensitivity (X-plate resistance)
+         swapxy                  Swap x and y axis
+         backlight               Change backlight GPIO pin {e.g. 12, 18}
++                                (fbtft only)
++        drm                     Use DRM/KMS driver mi0283qt instead of fbtft.
++                                Set the SPI clock to 70MHz.
++                                This has to be the first parameter.
++        backlight-pwm           Use pwm for backlight (drm only). NB: Disables
++                                audio headphone output as that also uses PWM.
+ 
+ 
+ Name:   rpi-ft5406
+--- a/arch/arm/boot/dts/overlays/rpi-display-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rpi-display-overlay.dts
+@@ -78,14 +78,73 @@
+ 			};
+ 		};
+ 	};
++
++	fragment@10 {
++		target = <&rpidisplay>;
++		__dormant__  {
++			backlight = <&backlight_gpio>;
++		};
++	};
++
++	fragment@11 {
++		target-path = "/";
++		__dormant__  {
++			backlight_gpio: backlight_gpio {
++				compatible = "gpio-backlight";
++				gpios = <&gpio 18 0>; /* GPIO_ACTIVE_HIGH */
++			};
++		};
++	};
++
++	fragment@20 {
++		target = <&rpidisplay>;
++		__dormant__  {
++			backlight = <&backlight_pwm>;
++		};
++	};
++
++	fragment@21 {
++		target-path = "/";
++		__dormant__  {
++			backlight_pwm: backlight_pwm {
++				compatible = "pwm-backlight";
++				brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
++				default-brightness-level = <16>;
++				pwms = <&pwm 0 200000>;
++			};
++		};
++	};
++
++	fragment@22 {
++		target = <&pwm>;
++		__dormant__ {
++			assigned-clock-rates = <1000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@23 {
++		target = <&audio>;
++		__dormant__  {
++		    brcm,disable-headphones;
++		};
++	};
++
+ 	__overrides__ {
+ 		speed =     <&rpidisplay>,"spi-max-frequency:0";
+-		rotate =    <&rpidisplay>,"rotate:0";
++		rotate =    <&rpidisplay>,"rotate:0", /* fbtft */
++			    <&rpidisplay>,"rotation:0"; /* drm */
+ 		fps =       <&rpidisplay>,"fps:0";
+ 		debug =     <&rpidisplay>,"debug:0";
+ 		xohms =     <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+ 		swapxy =    <&rpidisplay_ts>,"ti,swap-xy?";
+ 		backlight = <&rpidisplay>,"led-gpios:4",
+ 		            <&rpi_display_pins>,"brcm,pins:0";
++		drm =       <&rpidisplay>, "compatible=multi-inno,mi0283qt",
++			    <&rpidisplay>, "spi-max-frequency:0=70000000",
++			    <&rpidisplay>, "reset-gpios:8=0", /* GPIO_ACTIVE_HIGH */
++			    <0>, "+10+11";
++		backlight-pwm = <0>, "-10-11+20+21+22+23",
++				<&rpi_display_pins>, "brcm,function:0=2"; /* Alt5 */
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0799-bcm2835-codec-Return-empty-buffers-to-the-VPU-instea.patch b/target/linux/bcm27xx/patches-5.15/950-0799-bcm2835-codec-Return-empty-buffers-to-the-VPU-instea.patch
new file mode 100644
index 0000000000..ac1658f866
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0799-bcm2835-codec-Return-empty-buffers-to-the-VPU-instea.patch
@@ -0,0 +1,49 @@
+From 4fb4bf2f8e88973a4b575b537c774dd563160c5f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Mon, 28 Mar 2022 11:52:48 +0100
+Subject: [PATCH] bcm2835-codec: Return empty buffers to the VPU
+ instead of queueing to vbuf2
+
+The encoder can skip frames totally should rate control overshoot
+the target bitrate too far. In this situation it generates an
+output buffer of length 0.
+V4L2 treats a buffer of length 0 as an end of stream flag, which is
+not appropriate in this case, therefore we can not return that buffer
+to the client.
+
+The driver was returning the buffer to videobuf2 in the QUEUED state,
+however that buffer was then not dequeued again, so the number of
+buffers was reduced each time this happened. In the pathological
+case of using GStreamer's videotestsrc in mode 1 for noise, this happens
+sufficiently frequently to totally stall the pipeline.
+
+If the port is still enabled then return the buffer straight back to
+the VPU rather than to videobuf2.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c              | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -1159,10 +1159,15 @@ static void op_buffer_cb(struct vchiq_mm
+ 		v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: Empty buffer - flags %04x",
+ 			 __func__, mmal_buf->mmal_flags);
+ 		if (!(mmal_buf->mmal_flags & MMAL_BUFFER_HEADER_FLAG_EOS)) {
+-			vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_QUEUED);
+-			if (!port->enabled &&
+-			    atomic_read(&port->buffers_with_vpu))
+-				complete(&ctx->frame_cmplt);
++			if (!port->enabled) {
++				vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_QUEUED);
++				if (atomic_read(&port->buffers_with_vpu))
++					complete(&ctx->frame_cmplt);
++			} else {
++				vchiq_mmal_submit_buffer(ctx->dev->instance,
++							 &ctx->component->output[0],
++							 mmal_buf);
++			}
+ 			return;
+ 		}
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0800-mm-page_alloc-cma-introduce-a-customisable-threshold.patch b/target/linux/bcm27xx/patches-5.15/950-0800-mm-page_alloc-cma-introduce-a-customisable-threshold.patch
new file mode 100644
index 0000000000..91ec85a0b2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0800-mm-page_alloc-cma-introduce-a-customisable-threshold.patch
@@ -0,0 +1,67 @@
+From 6896ae528e4654e6f4bdff575337237f40de48b2 Mon Sep 17 00:00:00 2001
+From: David Plowman <david.plowman@raspberrypi.com>
+Date: Tue, 29 Mar 2022 16:10:06 +0100
+Subject: [PATCH] mm,page_alloc,cma: introduce a customisable threshold
+ for allocating pages in cma
+
+On some platforms the cma area can be half the entire system memory,
+meaning that allocations start happening in the cma area immediately.
+This leads to fragmentation and subsequent fatal cma_alloc failures.
+
+We introduce an "alloc_in_cma_threshold" parameter which requires that
+this many sixteenths of the free pages must be in cma before it will
+try to use them. By default this is set to 12, but the previous
+behaviour can be restored by setting it to 8 on startup.
+
+Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
+---
+ mm/page_alloc.c | 28 +++++++++++++++++++++++++---
+ 1 file changed, 25 insertions(+), 3 deletions(-)
+
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -190,6 +190,27 @@ EXPORT_SYMBOL(init_on_alloc);
+ DEFINE_STATIC_KEY_MAYBE(CONFIG_INIT_ON_FREE_DEFAULT_ON, init_on_free);
+ EXPORT_SYMBOL(init_on_free);
+ 
++#define ALLOC_IN_CMA_THRESHOLD_MAX 16
++#define ALLOC_IN_CMA_THRESHOLD_DEFAULT 12
++
++static unsigned long _alloc_in_cma_threshold __read_mostly
++				= ALLOC_IN_CMA_THRESHOLD_DEFAULT;
++
++static int __init alloc_in_cma_threshold_setup(char *buf)
++{
++	unsigned long res;
++
++	if (kstrtoul(buf, 10, &res) < 0 ||
++	    res > ALLOC_IN_CMA_THRESHOLD_MAX) {
++		pr_err("Bad alloc_cma_threshold value\n");
++		return 0;
++	}
++	_alloc_in_cma_threshold = res;
++	pr_info("Setting alloc_in_cma_threshold to %lu\n", res);
++	return 0;
++}
++early_param("alloc_in_cma_threshold", alloc_in_cma_threshold_setup);
++
+ static bool _init_on_alloc_enabled_early __read_mostly
+ 				= IS_ENABLED(CONFIG_INIT_ON_ALLOC_DEFAULT_ON);
+ static int __init early_init_on_alloc(char *buf)
+@@ -2980,12 +3001,13 @@ __rmqueue(struct zone *zone, unsigned in
+ 	if (IS_ENABLED(CONFIG_CMA)) {
+ 		/*
+ 		 * Balance movable allocations between regular and CMA areas by
+-		 * allocating from CMA when over half of the zone's free memory
+-		 * is in the CMA area.
++		 * allocating from CMA when over more than a given proportion of
++		 * the zone's free memory is in the CMA area.
+ 		 */
+ 		if (alloc_flags & ALLOC_CMA &&
+ 		    zone_page_state(zone, NR_FREE_CMA_PAGES) >
+-		    zone_page_state(zone, NR_FREE_PAGES) / 2) {
++		    zone_page_state(zone, NR_FREE_PAGES) / ALLOC_IN_CMA_THRESHOLD_MAX
++		    * _alloc_in_cma_threshold) {
+ 			page = __rmqueue_cma_fallback(zone, order);
+ 			if (page)
+ 				goto out;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0801-pinctrl-bcm2835-Only-return-non-GPIOs-to-inputs.patch b/target/linux/bcm27xx/patches-5.15/950-0801-pinctrl-bcm2835-Only-return-non-GPIOs-to-inputs.patch
new file mode 100644
index 0000000000..de0ee152ec
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0801-pinctrl-bcm2835-Only-return-non-GPIOs-to-inputs.patch
@@ -0,0 +1,42 @@
+From 55125538eea73e8156f3457ada0756c535400825 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 30 Mar 2022 09:48:41 +0100
+Subject: [PATCH] pinctrl: bcm2835: Only return non-GPIOs to inputs
+
+Allowing GPIO state to persist allows the use of gpioset to control
+GPIO levels without having to use the --mode=wait feature.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -892,9 +892,12 @@ static int bcm2835_pmx_free(struct pinct
+ 		unsigned offset)
+ {
+ 	struct bcm2835_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
++	enum bcm2835_fsel fsel = bcm2835_pinctrl_fsel_get(pc, offset);
++
++	/* Return non-GPIOs to GPIO_IN */
++	if (fsel != BCM2835_FSEL_GPIO_IN && fsel != BCM2835_FSEL_GPIO_OUT)
++		bcm2835_pinctrl_fsel_set(pc, offset, BCM2835_FSEL_GPIO_IN);
+ 
+-	/* disable by setting to GPIO_IN */
+-	bcm2835_pinctrl_fsel_set(pc, offset, BCM2835_FSEL_GPIO_IN);
+ 	return 0;
+ }
+ 
+@@ -936,10 +939,7 @@ static void bcm2835_pmx_gpio_disable_fre
+ 		struct pinctrl_gpio_range *range,
+ 		unsigned offset)
+ {
+-	struct bcm2835_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
+-
+-	/* disable by setting to GPIO_IN */
+-	bcm2835_pinctrl_fsel_set(pc, offset, BCM2835_FSEL_GPIO_IN);
++	(void)bcm2835_pmx_free(pctldev, offset);
+ }
+ 
+ static int bcm2835_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0802-ARM-dts-Enable-PMU-on-Cortex-A72-in-AArch32-state.patch b/target/linux/bcm27xx/patches-5.15/950-0802-ARM-dts-Enable-PMU-on-Cortex-A72-in-AArch32-state.patch
new file mode 100644
index 0000000000..27a82e789d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0802-ARM-dts-Enable-PMU-on-Cortex-A72-in-AArch32-state.patch
@@ -0,0 +1,24 @@
+From 80c0520cfe63849639bb0ee4db6f82606ca844cb Mon Sep 17 00:00:00 2001
+From: Ben Avison <bavison@riscosopen.org>
+Date: Wed, 30 Mar 2022 11:43:25 +0100
+Subject: [PATCH] ARM: dts: Enable PMU on Cortex-A72 in AArch32 state
+
+There is no specific AArch32 driver for the Cortex-A72 PMU, but the
+Cortex-A7 one works and is much better than no PMU driver at all.
+
+Signed-off-by: Ben Avison <bavison@riscosopen.org>
+---
+ arch/arm/boot/dts/bcm2711.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/bcm2711.dtsi
++++ b/arch/arm/boot/dts/bcm2711.dtsi
+@@ -445,7 +445,7 @@
+ 	};
+ 
+ 	arm-pmu {
+-		compatible = "arm,cortex-a72-pmu", "arm,armv8-pmuv3";
++		compatible = "arm,cortex-a72-pmu", "arm,armv8-pmuv3", "arm,cortex-a7-pmu";
+ 		interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>,
+ 			<GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
+ 			<GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0803-drm-panel-ilitek-ili9881c-Clean-up-on-mipi_dsi_attac.patch b/target/linux/bcm27xx/patches-5.15/950-0803-drm-panel-ilitek-ili9881c-Clean-up-on-mipi_dsi_attac.patch
new file mode 100644
index 0000000000..c5d1ade992
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0803-drm-panel-ilitek-ili9881c-Clean-up-on-mipi_dsi_attac.patch
@@ -0,0 +1,31 @@
+From 6339483e274de22714984c3b017de13c3f991e98 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 31 Mar 2022 12:03:36 +0100
+Subject: [PATCH] drm/panel: ilitek-ili9881c: Clean up on
+ mipi_dsi_attach failure
+
+mipi_dsi_attach is allowed to fail, and currently the probe
+code doesn't clean up (mainly drm_panel_remove) if this happens.
+
+Add cleanup code on failure.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
++++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+@@ -913,7 +913,11 @@ static int ili9881c_dsi_probe(struct mip
+ 	dsi->format = MIPI_DSI_FMT_RGB888;
+ 	dsi->lanes = 4;
+ 
+-	return mipi_dsi_attach(dsi);
++	ret = mipi_dsi_attach(dsi);
++	if (ret)
++		drm_panel_remove(&ctx->panel);
++
++	return ret;
+ }
+ 
+ static int ili9881c_dsi_remove(struct mipi_dsi_device *dsi)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0804-drm-panel-panel-ilitek9881c-Add-prepare_upstream_fir.patch b/target/linux/bcm27xx/patches-5.15/950-0804-drm-panel-panel-ilitek9881c-Add-prepare_upstream_fir.patch
new file mode 100644
index 0000000000..07236167db
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0804-drm-panel-panel-ilitek9881c-Add-prepare_upstream_fir.patch
@@ -0,0 +1,28 @@
+From 3326a363351e727a227a5dfcbec1665b97a1a7e9 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 31 Mar 2022 12:05:04 +0100
+Subject: [PATCH] drm/panel: panel-ilitek9881c: Add
+ prepare_upstream_first flag
+
+The panel sends MIPI DCS commands during prepare and is expecting
+the bus to remain in LP-11 state in-between.
+
+Set the prepare_upstream_first flag so that the upstream DSI host
+is prepared / pre_enabled first, and therefore the bus is in a
+defined state.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
++++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+@@ -888,6 +888,7 @@ static int ili9881c_dsi_probe(struct mip
+ 	ctx->dsi = dsi;
+ 	ctx->desc = of_device_get_match_data(&dsi->dev);
+ 
++	ctx->panel.prepare_upstream_first = true;
+ 	drm_panel_init(&ctx->panel, &dsi->dev, &ili9881c_funcs,
+ 		       DRM_MODE_CONNECTOR_DSI);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0805-drm-vc4-Force-trigger-of-dlist-update-on-margins-cha.patch b/target/linux/bcm27xx/patches-5.15/950-0805-drm-vc4-Force-trigger-of-dlist-update-on-margins-cha.patch
new file mode 100644
index 0000000000..44fb34b37b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0805-drm-vc4-Force-trigger-of-dlist-update-on-margins-cha.patch
@@ -0,0 +1,58 @@
+From decd9119a1379d04b875747405b78427b36b8d88 Mon Sep 17 00:00:00 2001
+From: 6by9 <6by9@users.noreply.github.com>
+Date: Fri, 1 Apr 2022 11:31:38 +0100
+Subject: [PATCH] drm/vc4: Force trigger of dlist update on margins
+ change (#4970)
+
+When the margins are changed, the dlist needs to be regenerated
+with the changed updated dest regions for each of the planes.
+
+Setting the zpos_changed flag is sufficient to trigger that
+without doing a full modeset, therefore set it should the
+margins be changed.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 14 ++++++++++----
+ drivers/gpu/drm/vc4/vc4_drv.h  |  7 +------
+ 2 files changed, 11 insertions(+), 10 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -728,10 +728,16 @@ static int vc4_crtc_atomic_check(struct
+ 		if (conn_state->crtc != crtc)
+ 			continue;
+ 
+-		vc4_state->margins.left = conn_state->tv.margins.left;
+-		vc4_state->margins.right = conn_state->tv.margins.right;
+-		vc4_state->margins.top = conn_state->tv.margins.top;
+-		vc4_state->margins.bottom = conn_state->tv.margins.bottom;
++		if (memcmp(&vc4_state->margins, &conn_state->tv.margins,
++			   sizeof(vc4_state->margins))) {
++			memcpy(&vc4_state->margins, &conn_state->tv.margins,
++			       sizeof(vc4_state->margins));
++
++			/* Need to force the dlist entries for all planes to be
++			 * updated so that the dest rectangles are changed.
++			 */
++			crtc_state->zpos_changed = true;
++		}
+ 		break;
+ 	}
+ 
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -589,12 +589,7 @@ struct vc4_crtc_state {
+ 	bool txp_armed;
+ 	unsigned int assigned_channel;
+ 
+-	struct {
+-		unsigned int left;
+-		unsigned int right;
+-		unsigned int top;
+-		unsigned int bottom;
+-	} margins;
++	struct drm_connector_tv_margins margins;
+ 
+ 	unsigned long hvs_load;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0806-drm-atomic-helpers-remove-legacy_cursor_update-hacks.patch b/target/linux/bcm27xx/patches-5.15/950-0806-drm-atomic-helpers-remove-legacy_cursor_update-hacks.patch
new file mode 100644
index 0000000000..c03e65122b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0806-drm-atomic-helpers-remove-legacy_cursor_update-hacks.patch
@@ -0,0 +1,121 @@
+From 41a635c959507290ba41afa56ac143d648a69958 Mon Sep 17 00:00:00 2001
+From: Daniel Vetter <daniel.vetter@ffwll.ch>
+Date: Fri, 23 Oct 2020 14:39:23 +0200
+Subject: [PATCH] drm/atomic-helpers: remove legacy_cursor_update hacks
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The stuff never really worked, and leads to lots of fun because it
+out-of-order frees atomic states. Which upsets KASAN, among other
+things.
+
+For async updates we now have a more solid solution with the
+->atomic_async_check and ->atomic_async_commit hooks. Support for that
+for msm and vc4 landed. nouveau and i915 have their own commit
+routines, doing something similar.
+
+For everyone else it's probably better to remove the use-after-free
+bug, and encourage folks to use the async support instead. The
+affected drivers which register a legacy cursor plane and don't either
+use the new async stuff or their own commit routine are: amdgpu,
+atmel, mediatek, qxl, rockchip, sti, sun4i, tegra, virtio, and vmwgfx.
+
+Inspired by an amdgpu bug report.
+
+v2: Drop RFC, I think with amdgpu converted over to use
+atomic_async_check/commit done in
+
+commit 674e78acae0dfb4beb56132e41cbae5b60f7d662
+Author: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
+Date:   Wed Dec 5 14:59:07 2018 -0500
+
+    drm/amd/display: Add fast path for cursor plane updates
+
+we don't have any driver anymore where we have userspace expecting
+solid legacy cursor support _and_ they are using the atomic helpers in
+their fully glory. So we can retire this.
+
+v3: Paper over msm and i915 regression. The complete_all is the only
+thing missing afaict.
+
+v4: Rebased on recent kernel, added extra link for vc4 bug.
+
+Link: https://bugzilla.kernel.org/show_bug.cgi?id=199425
+Link: https://lore.kernel.org/all/20220221134155.125447-9-maxime@cerno.tech/
+Cc: mikita.lipski@amd.com
+Cc: Michel Dänzer <michel@daenzer.net>
+Cc: harry.wentland@amd.com
+Cc: Rob Clark <robdclark@gmail.com>
+Cc: "Kazlauskas, Nicholas" <nicholas.kazlauskas@amd.com>
+Tested-by: Maxime Ripard <maxime@cerno.tech>
+Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/drm_atomic_helper.c          | 13 -------------
+ drivers/gpu/drm/i915/display/intel_display.c | 13 +++++++++++++
+ drivers/gpu/drm/msm/msm_atomic.c             |  2 ++
+ 3 files changed, 15 insertions(+), 13 deletions(-)
+
+--- a/drivers/gpu/drm/drm_atomic_helper.c
++++ b/drivers/gpu/drm/drm_atomic_helper.c
+@@ -1488,13 +1488,6 @@ drm_atomic_helper_wait_for_vblanks(struc
+ 	int i, ret;
+ 	unsigned int crtc_mask = 0;
+ 
+-	 /*
+-	  * Legacy cursor ioctls are completely unsynced, and userspace
+-	  * relies on that (by doing tons of cursor updates).
+-	  */
+-	if (old_state->legacy_cursor_update)
+-		return;
+-
+ 	for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) {
+ 		if (!new_crtc_state->active)
+ 			continue;
+@@ -2122,12 +2115,6 @@ int drm_atomic_helper_setup_commit(struc
+ 			complete_all(&commit->flip_done);
+ 			continue;
+ 		}
+-
+-		/* Legacy cursor updates are fully unsynced. */
+-		if (state->legacy_cursor_update) {
+-			complete_all(&commit->flip_done);
+-			continue;
+-		}
+ 
+ 		if (!new_crtc_state->event) {
+ 			commit->event = kzalloc(sizeof(*commit->event),
+--- a/drivers/gpu/drm/i915/display/intel_display.c
++++ b/drivers/gpu/drm/i915/display/intel_display.c
+@@ -10821,6 +10821,19 @@ static int intel_atomic_commit(struct dr
+ 				state->base.legacy_cursor_update = false;
+ 	}
+ 
++	/*
++	 * FIXME: Cut over to (async) commit helpers instead of hand-rolling
++	 * everything.
++	 */
++	if (state->base.legacy_cursor_update) {
++		struct intel_crtc_state *new_crtc_state;
++		struct intel_crtc *crtc;
++		int i;
++
++		for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
++			complete_all(&new_crtc_state->uapi.commit->flip_done);
++	}
++
+ 	ret = intel_atomic_prepare_commit(state);
+ 	if (ret) {
+ 		drm_dbg_atomic(&dev_priv->drm,
+--- a/drivers/gpu/drm/msm/msm_atomic.c
++++ b/drivers/gpu/drm/msm/msm_atomic.c
+@@ -246,6 +246,8 @@ void msm_atomic_commit_tail(struct drm_a
+ 		/* async updates are limited to single-crtc updates: */
+ 		WARN_ON(crtc_mask != drm_crtc_mask(async_crtc));
+ 
++		complete_all(&async_crtc->state->commit->flip_done);
++
+ 		/*
+ 		 * Start timer if we don't already have an update pending
+ 		 * on this crtc:
diff --git a/target/linux/bcm27xx/patches-5.15/950-0807-Revert-drm-vc4-hvs-Defer-dlist-slots-deallocation.patch b/target/linux/bcm27xx/patches-5.15/950-0807-Revert-drm-vc4-hvs-Defer-dlist-slots-deallocation.patch
new file mode 100644
index 0000000000..af4d766059
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0807-Revert-drm-vc4-hvs-Defer-dlist-slots-deallocation.patch
@@ -0,0 +1,342 @@
+From a6ee757ad5ba809e8bc3fd6f14167425cff91498 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 31 Mar 2022 15:27:43 +0200
+Subject: [PATCH] Revert "drm/vc4: hvs: Defer dlist slots deallocation"
+
+This reverts commit e99a1b69da07ee3b89a6b8005b854e6c04bfb450.
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c |  10 +-
+ drivers/gpu/drm/vc4/vc4_drv.h  |  15 +--
+ drivers/gpu/drm/vc4/vc4_hvs.c  | 181 +++------------------------------
+ drivers/gpu/drm/vc4/vc4_regs.h |   1 -
+ 4 files changed, 23 insertions(+), 184 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -998,8 +998,14 @@ void vc4_crtc_destroy_state(struct drm_c
+ 	struct vc4_dev *vc4 = to_vc4_dev(crtc->dev);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(state);
+ 
+-	vc4_hvs_mark_dlist_entry_stale(vc4->hvs, vc4_state->mm);
+-	vc4_state->mm = NULL;
++	if (drm_mm_node_allocated(&vc4_state->mm)) {
++		unsigned long flags;
++
++		spin_lock_irqsave(&vc4->hvs->mm_lock, flags);
++		drm_mm_remove_node(&vc4_state->mm);
++		spin_unlock_irqrestore(&vc4->hvs->mm_lock, flags);
++
++	}
+ 
+ 	drm_atomic_helper_crtc_destroy_state(crtc, state);
+ }
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -335,9 +335,6 @@ struct vc4_hvs {
+ 	struct drm_mm lbm_mm;
+ 	spinlock_t mm_lock;
+ 
+-	struct list_head stale_dlist_entries;
+-	struct work_struct free_dlist_work;
+-
+ 	struct drm_mm_node mitchell_netravali_filter;
+ 
+ 	struct debugfs_regset32 regset;
+@@ -576,16 +573,10 @@ struct drm_connector *vc4_get_crtc_conne
+ struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+ 					 struct drm_crtc_state *state);
+ 
+-struct vc4_hvs_dlist_allocation {
+-	struct list_head node;
+-	struct drm_mm_node mm_node;
+-	unsigned int channel;
+-	u8 target_frame_count;
+-};
+-
+ struct vc4_crtc_state {
+ 	struct drm_crtc_state base;
+-	struct vc4_hvs_dlist_allocation *mm;
++	/* Dlist area for this CRTC configuration. */
++	struct drm_mm_node mm;
+ 	bool txp_armed;
+ 	unsigned int assigned_channel;
+ 
+@@ -972,8 +963,6 @@ extern struct platform_driver vc4_hvs_dr
+ void vc4_hvs_stop_channel(struct vc4_hvs *hvs, unsigned int output);
+ int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output);
+ u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo);
+-void vc4_hvs_mark_dlist_entry_stale(struct vc4_hvs *hvs,
+-				    struct vc4_hvs_dlist_allocation *alloc);
+ int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_begin(struct drm_crtc *crtc, struct drm_atomic_state *state);
+ void vc4_hvs_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state);
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -389,150 +389,6 @@ static void vc5_hvs_update_gamma_lut(str
+ 	vc5_hvs_lut_load(hvs, vc4_crtc);
+ }
+ 
+-static void vc4_hvs_irq_enable_eof(const struct vc4_hvs *hvs,
+-				   unsigned int channel)
+-{
+-	u32 irq_mask = hvs->hvs5 ?
+-		SCALER5_DISPCTRL_DSPEIEOF(channel) :
+-		SCALER_DISPCTRL_DSPEIEOF(channel);
+-
+-	HVS_WRITE(SCALER_DISPCTRL,
+-		  HVS_READ(SCALER_DISPCTRL) | irq_mask);
+-}
+-
+-static void vc4_hvs_irq_clear_eof(const struct vc4_hvs *hvs,
+-				  unsigned int channel)
+-{
+-	u32 irq_mask = hvs->hvs5 ?
+-		SCALER5_DISPCTRL_DSPEIEOF(channel) :
+-		SCALER_DISPCTRL_DSPEIEOF(channel);
+-
+-	HVS_WRITE(SCALER_DISPCTRL,
+-		  HVS_READ(SCALER_DISPCTRL) & ~irq_mask);
+-}
+-
+-static struct vc4_hvs_dlist_allocation *
+-vc4_hvs_alloc_dlist_entry(struct vc4_hvs *hvs,
+-			  unsigned int channel,
+-			  size_t dlist_count)
+-{
+-	struct vc4_hvs_dlist_allocation *alloc;
+-	unsigned long flags;
+-	int ret;
+-
+-	if (channel == VC4_HVS_CHANNEL_DISABLED)
+-		return NULL;
+-
+-	alloc = kzalloc(sizeof(*alloc), GFP_KERNEL);
+-	if (!alloc)
+-		return ERR_PTR(-ENOMEM);
+-
+-	spin_lock_irqsave(&hvs->mm_lock, flags);
+-	ret = drm_mm_insert_node(&hvs->dlist_mm, &alloc->mm_node,
+-				 dlist_count);
+-	spin_unlock_irqrestore(&hvs->mm_lock, flags);
+-	if (ret)
+-		return ERR_PTR(ret);
+-
+-	alloc->channel = channel;
+-
+-	return alloc;
+-}
+-
+-void vc4_hvs_mark_dlist_entry_stale(struct vc4_hvs *hvs,
+-				    struct vc4_hvs_dlist_allocation *alloc)
+-{
+-	unsigned long flags;
+-	u8 frcnt;
+-
+-	if (!alloc)
+-		return;
+-
+-	if (!drm_mm_node_allocated(&alloc->mm_node))
+-		return;
+-
+-	frcnt = vc4_hvs_get_fifo_frame_count(hvs, alloc->channel);
+-	alloc->target_frame_count = (frcnt + 1) & ((1 << 6) - 1);
+-
+-	spin_lock_irqsave(&hvs->mm_lock, flags);
+-
+-	list_add_tail(&alloc->node, &hvs->stale_dlist_entries);
+-
+-	HVS_WRITE(SCALER_DISPSTAT, SCALER_DISPSTAT_EOF(alloc->channel));
+-	vc4_hvs_irq_enable_eof(hvs, alloc->channel);
+-
+-	spin_unlock_irqrestore(&hvs->mm_lock, flags);
+-}
+-
+-static void vc4_hvs_schedule_dlist_sweep(struct vc4_hvs *hvs,
+-					 unsigned int channel)
+-{
+-	unsigned long flags;
+-
+-	spin_lock_irqsave(&hvs->mm_lock, flags);
+-
+-	if (!list_empty(&hvs->stale_dlist_entries))
+-		queue_work(system_unbound_wq, &hvs->free_dlist_work);
+-
+-	vc4_hvs_irq_clear_eof(hvs, channel);
+-
+-	spin_unlock_irqrestore(&hvs->mm_lock, flags);
+-}
+-
+-/*
+- * Frame counts are essentially sequence numbers over 6 bits, and we
+- * thus can use sequence number arithmetic and follow the RFC1982 to
+- * implement proper comparison between them.
+- */
+-static bool vc4_hvs_frcnt_lte(u8 cnt1, u8 cnt2)
+-{
+-	return (s8)((cnt1 << 2) - (cnt2 << 2)) <= 0;
+-}
+-
+-/*
+- * Some atomic commits (legacy cursor updates, mostly) will not wait for
+- * the next vblank and will just return once the commit has been pushed
+- * to the hardware.
+- *
+- * On the hardware side, our HVS stores the planes parameters in its
+- * context RAM, and will use part of the RAM to store data during the
+- * frame rendering.
+- *
+- * This interacts badly if we get multiple commits before the next
+- * vblank since we could end up overwriting the DLIST entries used by
+- * previous commits if our dlist allocation reuses that entry. In such a
+- * case, we would overwrite the data currently being used by the
+- * hardware, resulting in a corrupted frame.
+- *
+- * In order to work around this, we'll queue the dlist entries in a list
+- * once the associated CRTC state is destroyed. The HVS only allows us
+- * to know which entry is being active, but not which one are no longer
+- * being used, so in order to avoid freeing entries that are still used
+- * by the hardware we add a guesstimate of the frame count where our
+- * entry will no longer be used, and thus will only free those entries
+- * when we will have reached that frame count.
+- */
+-static void vc4_hvs_dlist_free_work(struct work_struct *work)
+-{
+-	struct vc4_hvs *hvs = container_of(work, struct vc4_hvs, free_dlist_work);
+-	struct vc4_hvs_dlist_allocation *cur, *next;
+-	unsigned long flags;
+-
+-	spin_lock_irqsave(&hvs->mm_lock, flags);
+-	list_for_each_entry_safe(cur, next, &hvs->stale_dlist_entries, node) {
+-		u8 frcnt;
+-
+-		frcnt = vc4_hvs_get_fifo_frame_count(hvs, cur->channel);
+-		if (!vc4_hvs_frcnt_lte(cur->target_frame_count, frcnt))
+-			continue;
+-
+-		list_del(&cur->node);
+-		drm_mm_remove_node(&cur->mm_node);
+-		kfree(cur);
+-	}
+-	spin_unlock_irqrestore(&hvs->mm_lock, flags);
+-}
+-
+ u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo)
+ {
+ 	u8 field = 0;
+@@ -732,12 +588,13 @@ int vc4_hvs_atomic_check(struct drm_crtc
+ {
+ 	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state);
+-	struct vc4_hvs_dlist_allocation *alloc;
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_plane *plane;
++	unsigned long flags;
+ 	const struct drm_plane_state *plane_state;
+ 	u32 dlist_count = 0;
++	int ret;
+ 
+ 	/* The pixelvalve can only feed one encoder (and encoders are
+ 	 * 1:1 with connectors.)
+@@ -750,11 +607,12 @@ int vc4_hvs_atomic_check(struct drm_crtc
+ 
+ 	dlist_count++; /* Account for SCALER_CTL0_END. */
+ 
+-	alloc = vc4_hvs_alloc_dlist_entry(vc4->hvs, vc4_state->assigned_channel, dlist_count);
+-	if (IS_ERR(alloc))
+-		return PTR_ERR(alloc);
+-
+-	vc4_state->mm = alloc;
++	spin_lock_irqsave(&vc4->hvs->mm_lock, flags);
++	ret = drm_mm_insert_node(&vc4->hvs->dlist_mm, &vc4_state->mm,
++				 dlist_count);
++	spin_unlock_irqrestore(&vc4->hvs->mm_lock, flags);
++	if (ret)
++		return ret;
+ 
+ 	return vc4_hvs_gamma_check(crtc, state);
+ }
+@@ -766,9 +624,8 @@ static void vc4_hvs_install_dlist(struct
+ 	struct vc4_hvs *hvs = vc4->hvs;
+ 	struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state);
+ 
+-	WARN_ON(!vc4_state->mm);
+ 	HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
+-		  vc4_state->mm->mm_node.start);
++		  vc4_state->mm.start);
+ }
+ 
+ static void vc4_hvs_update_dlist(struct drm_crtc *crtc)
+@@ -793,10 +650,8 @@ static void vc4_hvs_update_dlist(struct
+ 		spin_unlock_irqrestore(&dev->event_lock, flags);
+ 	}
+ 
+-	WARN_ON(!vc4_state->mm);
+-
+ 	spin_lock_irqsave(&vc4_crtc->irq_lock, flags);
+-	vc4_crtc->current_dlist = vc4_state->mm->mm_node.start;
++	vc4_crtc->current_dlist = vc4_state->mm.start;
+ 	spin_unlock_irqrestore(&vc4_crtc->irq_lock, flags);
+ }
+ 
+@@ -853,7 +708,8 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	struct vc4_plane_state *vc4_plane_state;
+ 	bool debug_dump_regs = false;
+ 	bool enable_bg_fill = false;
+-	u32 __iomem *dlist_start, *dlist_next;
++	u32 __iomem *dlist_start = vc4->hvs->dlist + vc4_state->mm.start;
++	u32 __iomem *dlist_next = dlist_start;
+ 	unsigned int zpos = 0;
+ 	bool found = false;
+ 
+@@ -865,9 +721,6 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 		vc4_hvs_dump_state(hvs);
+ 	}
+ 
+-	dlist_start = vc4->hvs->dlist + vc4_state->mm->mm_node.start;
+-	dlist_next = dlist_start;
+-
+ 	/* Copy all the active planes' dlist contents to the hardware dlist. */
+ 	do {
+ 		found = false;
+@@ -901,8 +754,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 	writel(SCALER_CTL0_END, dlist_next);
+ 	dlist_next++;
+ 
+-	WARN_ON(!vc4_state->mm);
+-	WARN_ON_ONCE(dlist_next - dlist_start != vc4_state->mm->mm_node.size);
++	WARN_ON_ONCE(dlist_next - dlist_start != vc4_state->mm.size);
+ 
+ 	if (enable_bg_fill)
+ 		/* This sets a black background color fill, as is the case
+@@ -1007,11 +859,6 @@ static irqreturn_t vc4_hvs_irq_handler(i
+ 
+ 			irqret = IRQ_HANDLED;
+ 		}
+-
+-		if (status & SCALER_DISPSTAT_EOF(channel)) {
+-			vc4_hvs_schedule_dlist_sweep(hvs, channel);
+-			irqret = IRQ_HANDLED;
+-		}
+ 	}
+ 
+ 	/* Clear every per-channel interrupt flag. */
+@@ -1069,8 +916,6 @@ static int vc4_hvs_bind(struct device *d
+ 		hvs->dlist = hvs->regs + SCALER5_DLIST_START;
+ 
+ 	spin_lock_init(&hvs->mm_lock);
+-	INIT_LIST_HEAD(&hvs->stale_dlist_entries);
+-	INIT_WORK(&hvs->free_dlist_work, vc4_hvs_dlist_free_work);
+ 
+ 	/* Set up the HVS display list memory manager.  We never
+ 	 * overwrite the setup from the bootloader (just 128b out of
+--- a/drivers/gpu/drm/vc4/vc4_regs.h
++++ b/drivers/gpu/drm/vc4/vc4_regs.h
+@@ -234,7 +234,6 @@
+ # define SCALER_DISPCTRL_DSPEIEOLN(x)		BIT(8 + ((x) * 2))
+ /* Enables Display 0 EOF contribution to SCALER_DISPSTAT_IRQDISP0 */
+ # define SCALER_DISPCTRL_DSPEIEOF(x)		BIT(7 + ((x) * 2))
+-# define SCALER5_DISPCTRL_DSPEIEOF(x)		BIT(7 + ((x) * 4))
+ 
+ # define SCALER_DISPCTRL_SLVRDEIRQ		BIT(6)
+ # define SCALER_DISPCTRL_SLVWREIRQ		BIT(5)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0808-drm-vc4_hdmi-Force-modeset-when-bpc-changes.patch b/target/linux/bcm27xx/patches-5.15/950-0808-drm-vc4_hdmi-Force-modeset-when-bpc-changes.patch
new file mode 100644
index 0000000000..3b2bc702aa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0808-drm-vc4_hdmi-Force-modeset-when-bpc-changes.patch
@@ -0,0 +1,49 @@
+From 9c30f8d98ef2acd2599d2c074bce62133f82debb Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Wed, 6 Apr 2022 20:35:13 +0100
+Subject: [PATCH] drm/vc4_hdmi: Force modeset when bpc changes
+
+See: https://forum.libreelec.tv/thread/25427-le-10-0-2-on-rpi4-not-playing-files-that-10-0-1-had-no-problems-with/
+
+The issue is that kodi changes hdmi mode to 3840x2160@24 initially with "max bcp=8"
+After decoding the first frame it changes property to "max bpc=12".
+
+Now vc4_hdmi_encoder_compute_config chooses vc4_state->output_bpc = 12 with output_format=VC4_HDMI_OUTPUT_RGB
+This requires scrambling as clock > 300MHz (and we have hdmi_enable_4kp60=1).
+
+vc4_hdmi_encoder_atomic_mode_set (without this PR's assignment to mode_changed) is currenly not called so we don't assign:
+vc4_hdmi->output_bpc = vc4_state->output_bpc
+
+which means vc4_hdmi_enable_scrambling never enables scrambling (as vc4_hdmi->output_bpc is still 8).
+
+But we do set the pixel clock in phy_init() to a clock frequency that requires scrambling.
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1808,6 +1808,9 @@ static int vc4_hdmi_encoder_atomic_check
+ 	struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state);
+ 	struct drm_display_mode *mode = &crtc_state->adjusted_mode;
+ 	struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
++	struct drm_connector *connector = &vc4_hdmi->connector;
++	struct drm_connector_state *old_conn_state = drm_atomic_get_old_connector_state(conn_state->state, connector);
++	struct vc4_hdmi_connector_state *old_vc4_state = conn_state_to_vc4_hdmi_conn_state(old_conn_state);
+ 	unsigned long long pixel_rate = mode->clock * 1000;
+ 	unsigned long long tmds_rate;
+ 	int ret;
+@@ -1836,6 +1839,11 @@ static int vc4_hdmi_encoder_atomic_check
+ 	if (ret)
+ 		return ret;
+ 
++	/* vc4_hdmi_encoder_compute_config may have changed output_bpc and/or output_format */
++	if (vc4_state->output_bpc != old_vc4_state->output_bpc ||
++	    vc4_state->output_format != old_vc4_state->output_format)
++		crtc_state->mode_changed = true;
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0809-media-i2c-imx258-Remove-unused-defines.patch b/target/linux/bcm27xx/patches-5.15/950-0809-media-i2c-imx258-Remove-unused-defines.patch
new file mode 100644
index 0000000000..3622b7eb7b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0809-media-i2c-imx258-Remove-unused-defines.patch
@@ -0,0 +1,27 @@
+From 81de25b13ef670218bb0d778a05f43a544f0e70d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Jun 2021 18:18:42 +0100
+Subject: [PATCH] media: i2c: imx258: Remove unused defines
+
+The IMX258_FLL_* defines are unused. Remove them.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 6 ------
+ 1 file changed, 6 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -28,12 +28,6 @@
+ #define IMX258_VTS_30FPS_VGA		0x034c
+ #define IMX258_VTS_MAX			0xffff
+ 
+-/*Frame Length Line*/
+-#define IMX258_FLL_MIN			0x08a6
+-#define IMX258_FLL_MAX			0xffff
+-#define IMX258_FLL_STEP			1
+-#define IMX258_FLL_DEFAULT		0x0c98
+-
+ /* HBLANK control - read only */
+ #define IMX258_PPL_DEFAULT		5352
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0810-media-i2c-imx258-Make-image-geometry-meet-sensor-req.patch b/target/linux/bcm27xx/patches-5.15/950-0810-media-i2c-imx258-Make-image-geometry-meet-sensor-req.patch
new file mode 100644
index 0000000000..07c3e15c95
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0810-media-i2c-imx258-Make-image-geometry-meet-sensor-req.patch
@@ -0,0 +1,147 @@
+From 03c77d0b8ef969c88e00729dbbf488eba081aa7d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Jun 2021 18:34:38 +0100
+Subject: [PATCH] media: i2c: imx258: Make image geometry meet sensor
+ requirements
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The output image is defined as being 4208x3118 pixels in size.
+Y_ADD_STA register was set to 0, and Y_ADD_END to 3118, giving
+3119 lines total.
+
+The datasheet lists a requirement for Y_ADD_STA to be a multiple
+of a power of 2 depending on binning/scaling mode (2 for full pixel,
+4 for x2-bin/scale, 8 for (x2-bin)+(x2-subsample) or x4-bin, or 16
+for (x4-bin)+(x2-subsample)).
+(Y_ADD_END – Y_ADD_STA + 1) also has to be a similar power of 2.
+
+The current configuration for the full res modes breaks that second
+requirement, and we can't increase Y_ADD_STA to 1 to retain exactly
+the same field of view as that then breaks the first requirement.
+For the binned modes, they are worse off as 3118 is not a multiple of
+4.
+
+Increase the main mode to 4208x3120 so that it is the same FOV as the
+binned modes, with Y_ADD_STA at 0.
+Fix Y_ADD_STA and Y_ADD_END for the binned modes so that they meet the
+sensor requirements.
+
+This does change the Bayer order as the default configuration is for
+H&V flips to be enabled, so readout is from Y_STA_END to Y_ADD_STA,
+and this patch has changed Y_STA_END.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 26 +++++++++++++-------------
+ 1 file changed, 13 insertions(+), 13 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -110,7 +110,7 @@ struct imx258_mode {
+ 	struct imx258_reg_list reg_list;
+ };
+ 
+-/* 4208x3118 needs 1267Mbps/lane, 4 lanes */
++/* 4208x3120 needs 1267Mbps/lane, 4 lanes */
+ static const struct imx258_reg mipi_data_rate_1267mbps[] = {
+ 	{ 0x0301, 0x05 },
+ 	{ 0x0303, 0x02 },
+@@ -147,7 +147,7 @@ static const struct imx258_reg mipi_data
+ 	{ 0x0823, 0x00 },
+ };
+ 
+-static const struct imx258_reg mode_4208x3118_regs[] = {
++static const struct imx258_reg mode_4208x3120_regs[] = {
+ 	{ 0x0136, 0x13 },
+ 	{ 0x0137, 0x33 },
+ 	{ 0x3051, 0x00 },
+@@ -209,7 +209,7 @@ static const struct imx258_reg mode_4208
+ 	{ 0x0348, 0x10 },
+ 	{ 0x0349, 0x6F },
+ 	{ 0x034A, 0x0C },
+-	{ 0x034B, 0x2E },
++	{ 0x034B, 0x2F },
+ 	{ 0x0381, 0x01 },
+ 	{ 0x0383, 0x01 },
+ 	{ 0x0385, 0x01 },
+@@ -328,7 +328,7 @@ static const struct imx258_reg mode_2104
+ 	{ 0x0348, 0x10 },
+ 	{ 0x0349, 0x6F },
+ 	{ 0x034A, 0x0C },
+-	{ 0x034B, 0x2E },
++	{ 0x034B, 0x2F },
+ 	{ 0x0381, 0x01 },
+ 	{ 0x0383, 0x01 },
+ 	{ 0x0385, 0x01 },
+@@ -447,7 +447,7 @@ static const struct imx258_reg mode_1048
+ 	{ 0x0348, 0x10 },
+ 	{ 0x0349, 0x6F },
+ 	{ 0x034A, 0x0C },
+-	{ 0x034B, 0x2E },
++	{ 0x034B, 0x2F },
+ 	{ 0x0381, 0x01 },
+ 	{ 0x0383, 0x01 },
+ 	{ 0x0385, 0x01 },
+@@ -561,12 +561,12 @@ static const struct imx258_link_freq_con
+ static const struct imx258_mode supported_modes[] = {
+ 	{
+ 		.width = 4208,
+-		.height = 3118,
++		.height = 3120,
+ 		.vts_def = IMX258_VTS_30FPS,
+ 		.vts_min = IMX258_VTS_30FPS,
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mode_4208x3118_regs),
+-			.regs = mode_4208x3118_regs,
++			.num_of_regs = ARRAY_SIZE(mode_4208x3120_regs),
++			.regs = mode_4208x3120_regs,
+ 		},
+ 		.link_freq_index = IMX258_LINK_FREQ_1267MBPS,
+ 	},
+@@ -709,7 +709,7 @@ static int imx258_open(struct v4l2_subde
+ 	/* Initialize try_fmt */
+ 	try_fmt->width = supported_modes[0].width;
+ 	try_fmt->height = supported_modes[0].height;
+-	try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
++	try_fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ 	try_fmt->field = V4L2_FIELD_NONE;
+ 
+ 	return 0;
+@@ -821,7 +821,7 @@ static int imx258_enum_mbus_code(struct
+ 	if (code->index > 0)
+ 		return -EINVAL;
+ 
+-	code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
++	code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ 
+ 	return 0;
+ }
+@@ -833,7 +833,7 @@ static int imx258_enum_frame_size(struct
+ 	if (fse->index >= ARRAY_SIZE(supported_modes))
+ 		return -EINVAL;
+ 
+-	if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
++	if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10)
+ 		return -EINVAL;
+ 
+ 	fse->min_width = supported_modes[fse->index].width;
+@@ -849,7 +849,7 @@ static void imx258_update_pad_format(con
+ {
+ 	fmt->format.width = mode->width;
+ 	fmt->format.height = mode->height;
+-	fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
++	fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ 	fmt->format.field = V4L2_FIELD_NONE;
+ }
+ 
+@@ -897,7 +897,7 @@ static int imx258_set_pad_format(struct
+ 	mutex_lock(&imx258->mutex);
+ 
+ 	/* Only one raw bayer(GBRG) order is supported */
+-	fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
++	fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ 
+ 	mode = v4l2_find_nearest_size(supported_modes,
+ 		ARRAY_SIZE(supported_modes), width, height,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0811-media-i2c-imx258-Disable-digital-cropping-on-binned-.patch b/target/linux/bcm27xx/patches-5.15/950-0811-media-i2c-imx258-Disable-digital-cropping-on-binned-.patch
new file mode 100644
index 0000000000..76b117928c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0811-media-i2c-imx258-Disable-digital-cropping-on-binned-.patch
@@ -0,0 +1,47 @@
+From 7d8df6dbf26f0a3155590f1278a95cb13f47c9c8 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 30 Mar 2022 14:55:01 +0100
+Subject: [PATCH] media: i2c: imx258: Disable digital cropping on
+ binned modes
+
+The binned modes set DIG_CROP_X_OFFSET and DIG_CROP_IMAGE_WIDTH
+to less than the full image, even though the image being captured
+is meant to be a scaled version of the full array size.
+
+Reduce X_OFFSET to 0, and increase IMAGE_WIDTH to the full array.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -339,11 +339,11 @@ static const struct imx258_reg mode_2104
+ 	{ 0x0404, 0x00 },
+ 	{ 0x0405, 0x20 },
+ 	{ 0x0408, 0x00 },
+-	{ 0x0409, 0x02 },
++	{ 0x0409, 0x00 },
+ 	{ 0x040A, 0x00 },
+ 	{ 0x040B, 0x00 },
+ 	{ 0x040C, 0x10 },
+-	{ 0x040D, 0x6A },
++	{ 0x040D, 0x70 },
+ 	{ 0x040E, 0x06 },
+ 	{ 0x040F, 0x18 },
+ 	{ 0x3038, 0x00 },
+@@ -458,11 +458,11 @@ static const struct imx258_reg mode_1048
+ 	{ 0x0404, 0x00 },
+ 	{ 0x0405, 0x40 },
+ 	{ 0x0408, 0x00 },
+-	{ 0x0409, 0x06 },
++	{ 0x0409, 0x00 },
+ 	{ 0x040A, 0x00 },
+ 	{ 0x040B, 0x00 },
+ 	{ 0x040C, 0x10 },
+-	{ 0x040D, 0x64 },
++	{ 0x040D, 0x70 },
+ 	{ 0x040E, 0x03 },
+ 	{ 0x040F, 0x0C },
+ 	{ 0x3038, 0x00 },
diff --git a/target/linux/bcm27xx/patches-5.15/950-0812-media-i2c-imx258-Implement-HFLIP-and-VFLIP-controls.patch b/target/linux/bcm27xx/patches-5.15/950-0812-media-i2c-imx258-Implement-HFLIP-and-VFLIP-controls.patch
new file mode 100644
index 0000000000..49cb5c1d7f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0812-media-i2c-imx258-Implement-HFLIP-and-VFLIP-controls.patch
@@ -0,0 +1,269 @@
+From c9d976e455b911c977ffeb000b4342cd65c79dbc Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Jun 2021 18:29:52 +0100
+Subject: [PATCH] media: i2c: imx258: Implement HFLIP and VFLIP
+ controls.
+
+The sensor supports H & V flips, so implement the relevant controls.
+Note that the Bayer order changes with these flips, therefore
+they set the V4L2_CTRL_FLAG_MODIFY_LAYOUT property.
+
+As we now support flips, remove the restriction of the sensor only
+probing if rotated 180 degrees, but do take that value and initialise
+VFLIP and HFLIP based on it.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 106 +++++++++++++++++++++++++------------
+ 1 file changed, 73 insertions(+), 33 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -9,6 +9,7 @@
+ #include <linux/pm_runtime.h>
+ #include <media/v4l2-ctrls.h>
+ #include <media/v4l2-device.h>
++#include <media/v4l2-fwnode.h>
+ #include <asm/unaligned.h>
+ 
+ #define IMX258_REG_VALUE_08BIT		1
+@@ -69,7 +70,8 @@
+ 
+ /* Orientation */
+ #define REG_MIRROR_FLIP_CONTROL		0x0101
+-#define REG_CONFIG_MIRROR_FLIP		0x03
++#define REG_CONFIG_MIRROR_HFLIP		0x01
++#define REG_CONFIG_MIRROR_VFLIP		0x02
+ #define REG_CONFIG_FLIP_TEST_PATTERN	0x02
+ 
+ /* Input clock frequency in Hz */
+@@ -504,6 +506,22 @@ static const struct imx258_reg mode_1048
+ 	{ 0x0220, 0x00 },
+ };
+ 
++/*
++ * The supported formats.
++ * This table MUST contain 4 entries per format, to cover the various flip
++ * combinations in the order
++ * - no flip
++ * - h flip
++ * - v flip
++ * - h&v flips
++ */
++static const u32 codes[] = {
++	/* 10-bit modes. */
++	MEDIA_BUS_FMT_SRGGB10_1X10,
++	MEDIA_BUS_FMT_SGRBG10_1X10,
++	MEDIA_BUS_FMT_SGBRG10_1X10,
++	MEDIA_BUS_FMT_SBGGR10_1X10
++};
+ static const char * const imx258_test_pattern_menu[] = {
+ 	"Disabled",
+ 	"Solid Colour",
+@@ -605,6 +623,8 @@ struct imx258 {
+ 	struct v4l2_ctrl *vblank;
+ 	struct v4l2_ctrl *hblank;
+ 	struct v4l2_ctrl *exposure;
++	struct v4l2_ctrl *hflip;
++	struct v4l2_ctrl *vflip;
+ 
+ 	/* Current mode */
+ 	const struct imx258_mode *cur_mode;
+@@ -700,16 +720,29 @@ static int imx258_write_regs(struct imx2
+ 	return 0;
+ }
+ 
++/* Get bayer order based on flip setting. */
++static u32 imx258_get_format_code(struct imx258 *imx258)
++{
++	unsigned int i;
++
++	lockdep_assert_held(&imx258->mutex);
++
++	i = (imx258->vflip->val ? 2 : 0) |
++	    (imx258->hflip->val ? 1 : 0);
++
++	return codes[i];
++}
+ /* Open sub-device */
+ static int imx258_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+ {
++	struct imx258 *imx258 = to_imx258(sd);
+ 	struct v4l2_mbus_framefmt *try_fmt =
+ 		v4l2_subdev_get_try_format(sd, fh->state, 0);
+ 
+ 	/* Initialize try_fmt */
+ 	try_fmt->width = supported_modes[0].width;
+ 	try_fmt->height = supported_modes[0].height;
+-	try_fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
++	try_fmt->code = imx258_get_format_code(imx258);
+ 	try_fmt->field = V4L2_FIELD_NONE;
+ 
+ 	return 0;
+@@ -775,10 +808,6 @@ static int imx258_set_ctrl(struct v4l2_c
+ 		ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN,
+ 				IMX258_REG_VALUE_16BIT,
+ 				ctrl->val);
+-		ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
+-				IMX258_REG_VALUE_08BIT,
+-				!ctrl->val ? REG_CONFIG_MIRROR_FLIP :
+-				REG_CONFIG_FLIP_TEST_PATTERN);
+ 		break;
+ 	case V4L2_CID_WIDE_DYNAMIC_RANGE:
+ 		if (!ctrl->val) {
+@@ -796,6 +825,15 @@ static int imx258_set_ctrl(struct v4l2_c
+ 					       BIT(IMX258_HDR_RATIO_MAX));
+ 		}
+ 		break;
++	case V4L2_CID_VFLIP:
++	case V4L2_CID_HFLIP:
++		ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
++				       IMX258_REG_VALUE_08BIT,
++				       (imx258->hflip->val ?
++					REG_CONFIG_MIRROR_HFLIP : 0) |
++				       (imx258->vflip->val ?
++					REG_CONFIG_MIRROR_VFLIP : 0));
++		break;
+ 	default:
+ 		dev_info(&client->dev,
+ 			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
+@@ -817,11 +855,13 @@ static int imx258_enum_mbus_code(struct
+ 				  struct v4l2_subdev_state *sd_state,
+ 				  struct v4l2_subdev_mbus_code_enum *code)
+ {
+-	/* Only one bayer order(GRBG) is supported */
++	struct imx258 *imx258 = to_imx258(sd);
++
++	/* Only one bayer format (10 bit) is supported */
+ 	if (code->index > 0)
+ 		return -EINVAL;
+ 
+-	code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
++	code->code = imx258_get_format_code(imx258);
+ 
+ 	return 0;
+ }
+@@ -830,10 +870,11 @@ static int imx258_enum_frame_size(struct
+ 				  struct v4l2_subdev_state *sd_state,
+ 				  struct v4l2_subdev_frame_size_enum *fse)
+ {
++	struct imx258 *imx258 = to_imx258(sd);
+ 	if (fse->index >= ARRAY_SIZE(supported_modes))
+ 		return -EINVAL;
+ 
+-	if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10)
++	if (fse->code != imx258_get_format_code(imx258))
+ 		return -EINVAL;
+ 
+ 	fse->min_width = supported_modes[fse->index].width;
+@@ -844,12 +885,13 @@ static int imx258_enum_frame_size(struct
+ 	return 0;
+ }
+ 
+-static void imx258_update_pad_format(const struct imx258_mode *mode,
++static void imx258_update_pad_format(struct imx258 *imx258,
++				     const struct imx258_mode *mode,
+ 				     struct v4l2_subdev_format *fmt)
+ {
+ 	fmt->format.width = mode->width;
+ 	fmt->format.height = mode->height;
+-	fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
++	fmt->format.code = imx258_get_format_code(imx258);
+ 	fmt->format.field = V4L2_FIELD_NONE;
+ }
+ 
+@@ -862,7 +904,7 @@ static int __imx258_get_pad_format(struc
+ 							  sd_state,
+ 							  fmt->pad);
+ 	else
+-		imx258_update_pad_format(imx258->cur_mode, fmt);
++		imx258_update_pad_format(imx258, imx258->cur_mode, fmt);
+ 
+ 	return 0;
+ }
+@@ -896,13 +938,12 @@ static int imx258_set_pad_format(struct
+ 
+ 	mutex_lock(&imx258->mutex);
+ 
+-	/* Only one raw bayer(GBRG) order is supported */
+-	fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
++	fmt->format.code = imx258_get_format_code(imx258);
+ 
+ 	mode = v4l2_find_nearest_size(supported_modes,
+ 		ARRAY_SIZE(supported_modes), width, height,
+ 		fmt->format.width, fmt->format.height);
+-	imx258_update_pad_format(mode, fmt);
++	imx258_update_pad_format(imx258, mode, fmt);
+ 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ 		framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+ 		*framefmt = fmt->format;
+@@ -959,15 +1000,6 @@ static int imx258_start_streaming(struct
+ 		return ret;
+ 	}
+ 
+-	/* Set Orientation be 180 degree */
+-	ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
+-			       IMX258_REG_VALUE_08BIT, REG_CONFIG_MIRROR_FLIP);
+-	if (ret) {
+-		dev_err(&client->dev, "%s failed to set orientation\n",
+-			__func__);
+-		return ret;
+-	}
+-
+ 	/* Apply customized values from user */
+ 	ret =  __v4l2_ctrl_handler_setup(imx258->sd.ctrl_handler);
+ 	if (ret)
+@@ -1142,6 +1174,7 @@ static const struct v4l2_subdev_internal
+ static int imx258_init_controls(struct imx258 *imx258)
+ {
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
++	struct v4l2_fwnode_device_properties props;
+ 	struct v4l2_ctrl_handler *ctrl_hdlr;
+ 	s64 vblank_def;
+ 	s64 vblank_min;
+@@ -1150,7 +1183,7 @@ static int imx258_init_controls(struct i
+ 	int ret;
+ 
+ 	ctrl_hdlr = &imx258->ctrl_handler;
+-	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
++	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
+ 	if (ret)
+ 		return ret;
+ 
+@@ -1219,6 +1252,21 @@ static int imx258_init_controls(struct i
+ 				ARRAY_SIZE(imx258_test_pattern_menu) - 1,
+ 				0, 0, imx258_test_pattern_menu);
+ 
++	ret = v4l2_fwnode_device_parse(&client->dev, &props);
++	if (ret)
++		goto error;
++
++	imx258->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
++					  V4L2_CID_HFLIP, 0, 1, 1,
++					  props.rotation == 180 ? 1 : 0);
++	if (imx258->hflip)
++		imx258->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++
++	imx258->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
++					  V4L2_CID_VFLIP, 0, 1, 1,
++					  props.rotation == 180 ? 1 : 0);
++	if (imx258->vflip)
++		imx258->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+ 	if (ctrl_hdlr->error) {
+ 		ret = ctrl_hdlr->error;
+ 		dev_err(&client->dev, "%s control init failed (%d)\n",
+@@ -1270,14 +1318,6 @@ static int imx258_probe(struct i2c_clien
+ 		return -EINVAL;
+ 	}
+ 
+-	/*
+-	 * Check that the device is mounted upside down. The driver only
+-	 * supports a single pixel order right now.
+-	 */
+-	ret = device_property_read_u32(&client->dev, "rotation", &val);
+-	if (ret || val != 180)
+-		return -EINVAL;
+-
+ 	/* Initialize subdev */
+ 	v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0813-media-i2c-imx258-Remove-redundant-I2C-writes.patch b/target/linux/bcm27xx/patches-5.15/950-0813-media-i2c-imx258-Remove-redundant-I2C-writes.patch
new file mode 100644
index 0000000000..11f749a83f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0813-media-i2c-imx258-Remove-redundant-I2C-writes.patch
@@ -0,0 +1,42 @@
+From 09431461d8c37e1436326e1584f6db5a0afe699f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Jun 2021 18:38:46 +0100
+Subject: [PATCH] media: i2c: imx258: Remove redundant I2C writes.
+
+Registers 0x0202 and 0x0203 are written via the control handler
+for V4L2_CID_EXPOSURE, so are not needed from the mode lists.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 6 ------
+ 1 file changed, 6 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -238,8 +238,6 @@ static const struct imx258_reg mode_4208
+ 	{ 0x034E, 0x0C },
+ 	{ 0x034F, 0x30 },
+ 	{ 0x0350, 0x01 },
+-	{ 0x0202, 0x0C },
+-	{ 0x0203, 0x46 },
+ 	{ 0x0204, 0x00 },
+ 	{ 0x0205, 0x00 },
+ 	{ 0x020E, 0x01 },
+@@ -357,8 +355,6 @@ static const struct imx258_reg mode_2104
+ 	{ 0x034E, 0x06 },
+ 	{ 0x034F, 0x18 },
+ 	{ 0x0350, 0x01 },
+-	{ 0x0202, 0x06 },
+-	{ 0x0203, 0x2E },
+ 	{ 0x0204, 0x00 },
+ 	{ 0x0205, 0x00 },
+ 	{ 0x020E, 0x01 },
+@@ -476,8 +472,6 @@ static const struct imx258_reg mode_1048
+ 	{ 0x034E, 0x03 },
+ 	{ 0x034F, 0x0C },
+ 	{ 0x0350, 0x01 },
+-	{ 0x0202, 0x03 },
+-	{ 0x0203, 0x42 },
+ 	{ 0x0204, 0x00 },
+ 	{ 0x0205, 0x00 },
+ 	{ 0x020E, 0x01 },
diff --git a/target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch b/target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch
new file mode 100644
index 0000000000..069f9bba0a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch
@@ -0,0 +1,109 @@
+From 518075a2587a30a5fb67f2d76e576caf230a4105 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Jun 2021 18:45:40 +0100
+Subject: [PATCH] media: i2c: imx258: Add regulator control
+
+The device tree bindings define the relevant regulators for the
+sensor, so update the driver to request the regulators and control
+them at the appropriate times.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 42 +++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 41 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -7,6 +7,7 @@
+ #include <linux/i2c.h>
+ #include <linux/module.h>
+ #include <linux/pm_runtime.h>
++#include <linux/regulator/consumer.h>
+ #include <media/v4l2-ctrls.h>
+ #include <media/v4l2-device.h>
+ #include <media/v4l2-fwnode.h>
+@@ -524,6 +525,16 @@ static const char * const imx258_test_pa
+ 	"Pseudorandom Sequence (PN9)",
+ };
+ 
++/* regulator supplies */
++static const char * const imx258_supply_name[] = {
++	/* Supplies can be enabled in any order */
++	"vana",  /* Analog (2.8V) supply */
++	"vdig",  /* Digital Core (1.05V) supply */
++	"vif",  /* IF (1.8V) supply */
++};
++
++#define IMX258_NUM_SUPPLIES ARRAY_SIZE(imx258_supply_name)
++
+ /* Configurations for supported link frequencies */
+ #define IMX258_LINK_FREQ_634MHZ	633600000ULL
+ #define IMX258_LINK_FREQ_320MHZ	320000000ULL
+@@ -633,6 +644,7 @@ struct imx258 {
+ 	bool streaming;
+ 
+ 	struct clk *clk;
++	struct regulator_bulk_data supplies[IMX258_NUM_SUPPLIES];
+ };
+ 
+ static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd)
+@@ -1030,9 +1042,19 @@ static int imx258_power_on(struct device
+ 	struct imx258 *imx258 = to_imx258(sd);
+ 	int ret;
+ 
++	ret = regulator_bulk_enable(IMX258_NUM_SUPPLIES,
++				    imx258->supplies);
++	if (ret) {
++		dev_err(dev, "%s: failed to enable regulators\n",
++			__func__);
++		return ret;
++	}
++
+ 	ret = clk_prepare_enable(imx258->clk);
+-	if (ret)
++	if (ret) {
+ 		dev_err(dev, "failed to enable clock\n");
++		regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
++	}
+ 
+ 	return ret;
+ }
+@@ -1043,6 +1065,7 @@ static int imx258_power_off(struct devic
+ 	struct imx258 *imx258 = to_imx258(sd);
+ 
+ 	clk_disable_unprepare(imx258->clk);
++	regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
+ 
+ 	return 0;
+ }
+@@ -1285,6 +1308,19 @@ static void imx258_free_controls(struct
+ 	mutex_destroy(&imx258->mutex);
+ }
+ 
++static int imx258_get_regulators(struct imx258 *imx258,
++				 struct i2c_client *client)
++{
++	unsigned int i;
++
++	for (i = 0; i < IMX258_NUM_SUPPLIES; i++)
++		imx258->supplies[i].supply = imx258_supply_name[i];
++
++	return devm_regulator_bulk_get(&client->dev,
++				       IMX258_NUM_SUPPLIES,
++				       imx258->supplies);
++}
++
+ static int imx258_probe(struct i2c_client *client)
+ {
+ 	struct imx258 *imx258;
+@@ -1295,6 +1331,10 @@ static int imx258_probe(struct i2c_clien
+ 	if (!imx258)
+ 		return -ENOMEM;
+ 
++	ret = imx258_get_regulators(imx258, client);
++	if (ret)
++		return ret;
++
+ 	imx258->clk = devm_clk_get_optional(&client->dev, NULL);
+ 	if (IS_ERR(imx258->clk))
+ 		return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
diff --git a/target/linux/bcm27xx/patches-5.15/950-0815-media-i2c-imx258-Make-V4L2_CID_VBLANK-configurable.patch b/target/linux/bcm27xx/patches-5.15/950-0815-media-i2c-imx258-Make-V4L2_CID_VBLANK-configurable.patch
new file mode 100644
index 0000000000..11210a6a2f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0815-media-i2c-imx258-Make-V4L2_CID_VBLANK-configurable.patch
@@ -0,0 +1,76 @@
+From 2df16ebeea66a589195944bd2b501783c3cab60f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Jun 2021 18:56:33 +0100
+Subject: [PATCH] media: i2c: imx258: Make V4L2_CID_VBLANK
+ configurable.
+
+The values and ranges of V4L2_CID_VBLANK are all computed,
+so there is no reason for it to be a read only control.
+Remove the register values from the mode lists, add the
+handler, and remove the read only flag.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 16 +++++++---------
+ 1 file changed, 7 insertions(+), 9 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -30,6 +30,8 @@
+ #define IMX258_VTS_30FPS_VGA		0x034c
+ #define IMX258_VTS_MAX			0xffff
+ 
++#define IMX258_REG_VTS			0x0340
++
+ /* HBLANK control - read only */
+ #define IMX258_PPL_DEFAULT		5352
+ 
+@@ -203,8 +205,6 @@ static const struct imx258_reg mode_4208
+ 	{ 0x0114, 0x03 },
+ 	{ 0x0342, 0x14 },
+ 	{ 0x0343, 0xE8 },
+-	{ 0x0340, 0x0C },
+-	{ 0x0341, 0x50 },
+ 	{ 0x0344, 0x00 },
+ 	{ 0x0345, 0x00 },
+ 	{ 0x0346, 0x00 },
+@@ -320,8 +320,6 @@ static const struct imx258_reg mode_2104
+ 	{ 0x0114, 0x03 },
+ 	{ 0x0342, 0x14 },
+ 	{ 0x0343, 0xE8 },
+-	{ 0x0340, 0x06 },
+-	{ 0x0341, 0x38 },
+ 	{ 0x0344, 0x00 },
+ 	{ 0x0345, 0x00 },
+ 	{ 0x0346, 0x00 },
+@@ -437,8 +435,6 @@ static const struct imx258_reg mode_1048
+ 	{ 0x0114, 0x03 },
+ 	{ 0x0342, 0x14 },
+ 	{ 0x0343, 0xE8 },
+-	{ 0x0340, 0x03 },
+-	{ 0x0341, 0x4C },
+ 	{ 0x0344, 0x00 },
+ 	{ 0x0345, 0x00 },
+ 	{ 0x0346, 0x00 },
+@@ -831,6 +827,11 @@ static int imx258_set_ctrl(struct v4l2_c
+ 					       BIT(IMX258_HDR_RATIO_MAX));
+ 		}
+ 		break;
++	case V4L2_CID_VBLANK:
++		ret = imx258_write_reg(imx258, IMX258_REG_VTS,
++				       IMX258_REG_VALUE_16BIT,
++				       imx258->cur_mode->height + ctrl->val);
++		break;
+ 	case V4L2_CID_VFLIP:
+ 	case V4L2_CID_HFLIP:
+ 		ret = imx258_write_reg(imx258, REG_MIRROR_FLIP_CONTROL,
+@@ -1233,9 +1234,6 @@ static int imx258_init_controls(struct i
+ 				IMX258_VTS_MAX - imx258->cur_mode->height, 1,
+ 				vblank_def);
+ 
+-	if (imx258->vblank)
+-		imx258->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+-
+ 	imx258->hblank = v4l2_ctrl_new_std(
+ 				ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_HBLANK,
+ 				IMX258_PPL_DEFAULT - imx258->cur_mode->width,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0816-media-i2c-imx258-Register-the-ctrls-from-fwnode-prop.patch b/target/linux/bcm27xx/patches-5.15/950-0816-media-i2c-imx258-Register-the-ctrls-from-fwnode-prop.patch
new file mode 100644
index 0000000000..e1abb9465d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0816-media-i2c-imx258-Register-the-ctrls-from-fwnode-prop.patch
@@ -0,0 +1,36 @@
+From f6f294c227272fe1de3c95d4ad89594e0a74aee8 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 15 Jun 2021 19:01:46 +0100
+Subject: [PATCH] media: i2c: imx258: Register the ctrls from fwnode
+ properties
+
+Use v4l2_ctrl_new_fwnode_properties to register the standard
+fwnode properties for the driver.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -1201,7 +1201,7 @@ static int imx258_init_controls(struct i
+ 	int ret;
+ 
+ 	ctrl_hdlr = &imx258->ctrl_handler;
+-	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
++	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12);
+ 	if (ret)
+ 		return ret;
+ 
+@@ -1270,6 +1270,10 @@ static int imx258_init_controls(struct i
+ 	ret = v4l2_fwnode_device_parse(&client->dev, &props);
+ 	if (ret)
+ 		goto error;
++	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx258_ctrl_ops,
++					      &props);
++	if (ret)
++		goto error;
+ 
+ 	imx258->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
+ 					  V4L2_CID_HFLIP, 0, 1, 1,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0817-media-i2c-imx258-Add-support-for-24MHz-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0817-media-i2c-imx258-Add-support-for-24MHz-clock.patch
new file mode 100644
index 0000000000..35df2d7cbb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0817-media-i2c-imx258-Add-support-for-24MHz-clock.patch
@@ -0,0 +1,286 @@
+From 08f30518ef7619a6d24b39c367bffb30ebf7196d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 16 Jun 2021 13:08:00 +0100
+Subject: [PATCH] media: i2c: imx258: Add support for 24MHz clock
+
+There's no reason why the clock must be 19.2MHz and nothing
+else (indeed this isn't even a frequency listed in the datasheet),
+so add support for 24MHz as well.
+The PLL settings result in slightly different link frequencies,
+so parameterise those.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 141 +++++++++++++++++++++++++++++--------
+ 1 file changed, 111 insertions(+), 30 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -77,9 +77,6 @@
+ #define REG_CONFIG_MIRROR_VFLIP		0x02
+ #define REG_CONFIG_FLIP_TEST_PATTERN	0x02
+ 
+-/* Input clock frequency in Hz */
+-#define IMX258_INPUT_CLOCK_FREQ		19200000
+-
+ struct imx258_reg {
+ 	u16 address;
+ 	u8 val;
+@@ -92,6 +89,7 @@ struct imx258_reg_list {
+ 
+ /* Link frequency config */
+ struct imx258_link_freq_config {
++	u64 link_frequency;
+ 	u32 pixels_per_line;
+ 
+ 	/* PLL registers for this link frequency */
+@@ -116,7 +114,9 @@ struct imx258_mode {
+ };
+ 
+ /* 4208x3120 needs 1267Mbps/lane, 4 lanes */
+-static const struct imx258_reg mipi_data_rate_1267mbps[] = {
++static const struct imx258_reg mipi_1267mbps_19_2mhz[] = {
++	{ 0x0136, 0x13 },
++	{ 0x0137, 0x33 },
+ 	{ 0x0301, 0x05 },
+ 	{ 0x0303, 0x02 },
+ 	{ 0x0305, 0x03 },
+@@ -134,7 +134,29 @@ static const struct imx258_reg mipi_data
+ 	{ 0x0823, 0xCC },
+ };
+ 
+-static const struct imx258_reg mipi_data_rate_640mbps[] = {
++static const struct imx258_reg mipi_1272mbps_24mhz[] = {
++	{ 0x0136, 0x18 },
++	{ 0x0137, 0x00 },
++	{ 0x0301, 0x05 },
++	{ 0x0303, 0x02 },
++	{ 0x0305, 0x04 },
++	{ 0x0306, 0x00 },
++	{ 0x0307, 0xD4 },
++	{ 0x0309, 0x0A },
++	{ 0x030B, 0x01 },
++	{ 0x030D, 0x02 },
++	{ 0x030E, 0x00 },
++	{ 0x030F, 0xD8 },
++	{ 0x0310, 0x00 },
++	{ 0x0820, 0x13 },
++	{ 0x0821, 0x4C },
++	{ 0x0822, 0xCC },
++	{ 0x0823, 0xCC },
++};
++
++static const struct imx258_reg mipi_640mbps_19_2mhz[] = {
++	{ 0x0136, 0x13 },
++	{ 0x0137, 0x33 },
+ 	{ 0x0301, 0x05 },
+ 	{ 0x0303, 0x02 },
+ 	{ 0x0305, 0x03 },
+@@ -152,9 +174,27 @@ static const struct imx258_reg mipi_data
+ 	{ 0x0823, 0x00 },
+ };
+ 
++static const struct imx258_reg mipi_642mbps_24mhz[] = {
++	{ 0x0136, 0x18 },
++	{ 0x0137, 0x00 },
++	{ 0x0301, 0x05 },
++	{ 0x0303, 0x02 },
++	{ 0x0305, 0x04 },
++	{ 0x0306, 0x00 },
++	{ 0x0307, 0x6B },
++	{ 0x0309, 0x0A },
++	{ 0x030B, 0x01 },
++	{ 0x030D, 0x02 },
++	{ 0x030E, 0x00 },
++	{ 0x030F, 0xD8 },
++	{ 0x0310, 0x00 },
++	{ 0x0820, 0x0A },
++	{ 0x0821, 0x00 },
++	{ 0x0822, 0x00 },
++	{ 0x0823, 0x00 },
++};
++
+ static const struct imx258_reg mode_4208x3120_regs[] = {
+-	{ 0x0136, 0x13 },
+-	{ 0x0137, 0x33 },
+ 	{ 0x3051, 0x00 },
+ 	{ 0x3052, 0x00 },
+ 	{ 0x4E21, 0x14 },
+@@ -268,8 +308,6 @@ static const struct imx258_reg mode_4208
+ };
+ 
+ static const struct imx258_reg mode_2104_1560_regs[] = {
+-	{ 0x0136, 0x13 },
+-	{ 0x0137, 0x33 },
+ 	{ 0x3051, 0x00 },
+ 	{ 0x3052, 0x00 },
+ 	{ 0x4E21, 0x14 },
+@@ -383,8 +421,6 @@ static const struct imx258_reg mode_2104
+ };
+ 
+ static const struct imx258_reg mode_1048_780_regs[] = {
+-	{ 0x0136, 0x13 },
+-	{ 0x0137, 0x33 },
+ 	{ 0x3051, 0x00 },
+ 	{ 0x3052, 0x00 },
+ 	{ 0x4E21, 0x14 },
+@@ -531,10 +567,6 @@ static const char * const imx258_supply_
+ 
+ #define IMX258_NUM_SUPPLIES ARRAY_SIZE(imx258_supply_name)
+ 
+-/* Configurations for supported link frequencies */
+-#define IMX258_LINK_FREQ_634MHZ	633600000ULL
+-#define IMX258_LINK_FREQ_320MHZ	320000000ULL
+-
+ enum {
+ 	IMX258_LINK_FREQ_1267MBPS,
+ 	IMX258_LINK_FREQ_640MBPS,
+@@ -553,25 +585,55 @@ static u64 link_freq_to_pixel_rate(u64 f
+ }
+ 
+ /* Menu items for LINK_FREQ V4L2 control */
+-static const s64 link_freq_menu_items[] = {
++/* Configurations for supported link frequencies */
++#define IMX258_LINK_FREQ_634MHZ	633600000ULL
++#define IMX258_LINK_FREQ_320MHZ	320000000ULL
++
++static const s64 link_freq_menu_items_19_2[] = {
+ 	IMX258_LINK_FREQ_634MHZ,
+ 	IMX258_LINK_FREQ_320MHZ,
+ };
+ 
++/* Configurations for supported link frequencies */
++#define IMX258_LINK_FREQ_636MHZ	636000000ULL
++#define IMX258_LINK_FREQ_321MHZ	321000000ULL
++
++static const s64 link_freq_menu_items_24[] = {
++	IMX258_LINK_FREQ_636MHZ,
++	IMX258_LINK_FREQ_321MHZ,
++};
++
+ /* Link frequency configs */
+-static const struct imx258_link_freq_config link_freq_configs[] = {
++static const struct imx258_link_freq_config link_freq_configs_19_2[] = {
++	[IMX258_LINK_FREQ_1267MBPS] = {
++		.pixels_per_line = IMX258_PPL_DEFAULT,
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz),
++			.regs = mipi_1267mbps_19_2mhz,
++		}
++	},
++	[IMX258_LINK_FREQ_640MBPS] = {
++		.pixels_per_line = IMX258_PPL_DEFAULT,
++		.reg_list = {
++			.num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz),
++			.regs = mipi_640mbps_19_2mhz,
++		}
++	},
++};
++
++static const struct imx258_link_freq_config link_freq_configs_24[] = {
+ 	[IMX258_LINK_FREQ_1267MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mipi_data_rate_1267mbps),
+-			.regs = mipi_data_rate_1267mbps,
++			.num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz),
++			.regs = mipi_1272mbps_24mhz,
+ 		}
+ 	},
+ 	[IMX258_LINK_FREQ_640MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mipi_data_rate_640mbps),
+-			.regs = mipi_data_rate_640mbps,
++			.num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz),
++			.regs = mipi_642mbps_24mhz,
+ 		}
+ 	},
+ };
+@@ -630,6 +692,9 @@ struct imx258 {
+ 	/* Current mode */
+ 	const struct imx258_mode *cur_mode;
+ 
++	const struct imx258_link_freq_config *link_freq_configs;
++	const s64 *link_freq_menu_items;
++
+ 	/*
+ 	 * Mutex for serialized access:
+ 	 * Protect sensor module set pad format and start/stop streaming safely.
+@@ -958,7 +1023,7 @@ static int imx258_set_pad_format(struct
+ 		imx258->cur_mode = mode;
+ 		__v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
+ 
+-		link_freq = link_freq_menu_items[mode->link_freq_index];
++		link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
+ 		pixel_rate = link_freq_to_pixel_rate(link_freq);
+ 		__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
+ 		/* Update limits and set FPS to default */
+@@ -972,7 +1037,7 @@ static int imx258_set_pad_format(struct
+ 			vblank_def);
+ 		__v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def);
+ 		h_blank =
+-			link_freq_configs[mode->link_freq_index].pixels_per_line
++			imx258->link_freq_configs[mode->link_freq_index].pixels_per_line
+ 			 - imx258->cur_mode->width;
+ 		__v4l2_ctrl_modify_range(imx258->hblank, h_blank,
+ 					 h_blank, 1, h_blank);
+@@ -992,7 +1057,7 @@ static int imx258_start_streaming(struct
+ 
+ 	/* Setup PLL */
+ 	link_freq_index = imx258->cur_mode->link_freq_index;
+-	reg_list = &link_freq_configs[link_freq_index].reg_list;
++	reg_list = &imx258->link_freq_configs[link_freq_index].reg_list;
+ 	ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
+ 	if (ret) {
+ 		dev_err(&client->dev, "%s failed to set plls\n", __func__);
+@@ -1210,15 +1275,17 @@ static int imx258_init_controls(struct i
+ 	imx258->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
+ 				&imx258_ctrl_ops,
+ 				V4L2_CID_LINK_FREQ,
+-				ARRAY_SIZE(link_freq_menu_items) - 1,
++				ARRAY_SIZE(link_freq_menu_items_19_2) - 1,
+ 				0,
+-				link_freq_menu_items);
++				imx258->link_freq_menu_items);
+ 
+ 	if (imx258->link_freq)
+ 		imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
+-	pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
+-	pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]);
++	pixel_rate_max =
++		link_freq_to_pixel_rate(imx258->link_freq_menu_items[0]);
++	pixel_rate_min =
++		link_freq_to_pixel_rate(imx258->link_freq_menu_items[1]);
+ 	/* By default, PIXEL_RATE is read only */
+ 	imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
+ 				V4L2_CID_PIXEL_RATE,
+@@ -1346,11 +1413,25 @@ static int imx258_probe(struct i2c_clien
+ 			"no clock provided, using clock-frequency property\n");
+ 
+ 		device_property_read_u32(&client->dev, "clock-frequency", &val);
++	} else if (IS_ERR(imx258->clk)) {
++		return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
++				     "error getting clock\n");
+ 	} else {
+ 		val = clk_get_rate(imx258->clk);
+ 	}
+-	if (val != IMX258_INPUT_CLOCK_FREQ) {
+-		dev_err(&client->dev, "input clock frequency not supported\n");
++
++	switch (val) {
++	case 19200000:
++		imx258->link_freq_configs = link_freq_configs_19_2;
++		imx258->link_freq_menu_items = link_freq_menu_items_19_2;
++		break;
++	case 24000000:
++		imx258->link_freq_configs = link_freq_configs_24;
++		imx258->link_freq_menu_items = link_freq_menu_items_24;
++		break;
++	default:
++		dev_err(&client->dev, "input clock frequency of %u not supported\n",
++			val);
+ 		return -EINVAL;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0818-media-i2c-imx258-Add-support-for-running-on-2-CSI-da.patch b/target/linux/bcm27xx/patches-5.15/950-0818-media-i2c-imx258-Add-support-for-running-on-2-CSI-da.patch
new file mode 100644
index 0000000000..c22770da48
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0818-media-i2c-imx258-Add-support-for-running-on-2-CSI-da.patch
@@ -0,0 +1,411 @@
+From ffbb09db69889cb09a1d7d647364211605247158 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 16 Jun 2021 16:27:06 +0100
+Subject: [PATCH] media: i2c: imx258: Add support for running on 2 CSI
+ data lanes
+
+Extends the driver to also support 2 data lanes.
+Frame rates are obviously more restricted on 2 lanes, but some
+hardware simply hasn't wired more up.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 212 ++++++++++++++++++++++++++++++++-----
+ 1 file changed, 186 insertions(+), 26 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -87,13 +87,17 @@ struct imx258_reg_list {
+ 	const struct imx258_reg *regs;
+ };
+ 
++#define IMX258_LANE_CONFIGS	2
++#define IMX258_2_LANE_MODE	0
++#define IMX258_4_LANE_MODE	1
++
+ /* Link frequency config */
+ struct imx258_link_freq_config {
+ 	u64 link_frequency;
+ 	u32 pixels_per_line;
+ 
+ 	/* PLL registers for this link frequency */
+-	struct imx258_reg_list reg_list;
++	struct imx258_reg_list reg_list[IMX258_LANE_CONFIGS];
+ };
+ 
+ /* Mode : resolution and related config&values */
+@@ -113,8 +117,30 @@ struct imx258_mode {
+ 	struct imx258_reg_list reg_list;
+ };
+ 
+-/* 4208x3120 needs 1267Mbps/lane, 4 lanes */
+-static const struct imx258_reg mipi_1267mbps_19_2mhz[] = {
++/* 4208x3120 needs 1267Mbps/lane, 4 lanes. Use that rate on 2 lanes as well */
++static const struct imx258_reg mipi_1267mbps_19_2mhz_2l[] = {
++	{ 0x0136, 0x13 },
++	{ 0x0137, 0x33 },
++	{ 0x0301, 0x0A },
++	{ 0x0303, 0x02 },
++	{ 0x0305, 0x03 },
++	{ 0x0306, 0x00 },
++	{ 0x0307, 0xC6 },
++	{ 0x0309, 0x0A },
++	{ 0x030B, 0x01 },
++	{ 0x030D, 0x02 },
++	{ 0x030E, 0x00 },
++	{ 0x030F, 0xD8 },
++	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x01 },
++	{ 0x0820, 0x09 },
++	{ 0x0821, 0xa6 },
++	{ 0x0822, 0x66 },
++	{ 0x0823, 0x66 },
++};
++
++static const struct imx258_reg mipi_1267mbps_19_2mhz_4l[] = {
+ 	{ 0x0136, 0x13 },
+ 	{ 0x0137, 0x33 },
+ 	{ 0x0301, 0x05 },
+@@ -128,16 +154,18 @@ static const struct imx258_reg mipi_1267
+ 	{ 0x030E, 0x00 },
+ 	{ 0x030F, 0xD8 },
+ 	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x03 },
+ 	{ 0x0820, 0x13 },
+ 	{ 0x0821, 0x4C },
+ 	{ 0x0822, 0xCC },
+ 	{ 0x0823, 0xCC },
+ };
+ 
+-static const struct imx258_reg mipi_1272mbps_24mhz[] = {
++static const struct imx258_reg mipi_1272mbps_24mhz_2l[] = {
+ 	{ 0x0136, 0x18 },
+ 	{ 0x0137, 0x00 },
+-	{ 0x0301, 0x05 },
++	{ 0x0301, 0x0a },
+ 	{ 0x0303, 0x02 },
+ 	{ 0x0305, 0x04 },
+ 	{ 0x0306, 0x00 },
+@@ -148,13 +176,59 @@ static const struct imx258_reg mipi_1272
+ 	{ 0x030E, 0x00 },
+ 	{ 0x030F, 0xD8 },
+ 	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x01 },
+ 	{ 0x0820, 0x13 },
+ 	{ 0x0821, 0x4C },
+ 	{ 0x0822, 0xCC },
+ 	{ 0x0823, 0xCC },
+ };
+ 
+-static const struct imx258_reg mipi_640mbps_19_2mhz[] = {
++static const struct imx258_reg mipi_1272mbps_24mhz_4l[] = {
++	{ 0x0136, 0x18 },
++	{ 0x0137, 0x00 },
++	{ 0x0301, 0x05 },
++	{ 0x0303, 0x02 },
++	{ 0x0305, 0x04 },
++	{ 0x0306, 0x00 },
++	{ 0x0307, 0xD4 },
++	{ 0x0309, 0x0A },
++	{ 0x030B, 0x01 },
++	{ 0x030D, 0x02 },
++	{ 0x030E, 0x00 },
++	{ 0x030F, 0xD8 },
++	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x03 },
++	{ 0x0820, 0x13 },
++	{ 0x0821, 0xE0 },
++	{ 0x0822, 0x00 },
++	{ 0x0823, 0x00 },
++};
++
++static const struct imx258_reg mipi_640mbps_19_2mhz_2l[] = {
++	{ 0x0136, 0x13 },
++	{ 0x0137, 0x33 },
++	{ 0x0301, 0x05 },
++	{ 0x0303, 0x02 },
++	{ 0x0305, 0x03 },
++	{ 0x0306, 0x00 },
++	{ 0x0307, 0x64 },
++	{ 0x0309, 0x0A },
++	{ 0x030B, 0x01 },
++	{ 0x030D, 0x02 },
++	{ 0x030E, 0x00 },
++	{ 0x030F, 0xD8 },
++	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x01 },
++	{ 0x0820, 0x05 },
++	{ 0x0821, 0x00 },
++	{ 0x0822, 0x00 },
++	{ 0x0823, 0x00 },
++};
++
++static const struct imx258_reg mipi_640mbps_19_2mhz_4l[] = {
+ 	{ 0x0136, 0x13 },
+ 	{ 0x0137, 0x33 },
+ 	{ 0x0301, 0x05 },
+@@ -168,13 +242,37 @@ static const struct imx258_reg mipi_640m
+ 	{ 0x030E, 0x00 },
+ 	{ 0x030F, 0xD8 },
+ 	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x03 },
++	{ 0x0820, 0x0A },
++	{ 0x0821, 0x00 },
++	{ 0x0822, 0x00 },
++	{ 0x0823, 0x00 },
++};
++
++static const struct imx258_reg mipi_642mbps_24mhz_2l[] = {
++	{ 0x0136, 0x18 },
++	{ 0x0137, 0x00 },
++	{ 0x0301, 0x0A },
++	{ 0x0303, 0x02 },
++	{ 0x0305, 0x04 },
++	{ 0x0306, 0x00 },
++	{ 0x0307, 0x6B },
++	{ 0x0309, 0x0A },
++	{ 0x030B, 0x01 },
++	{ 0x030D, 0x02 },
++	{ 0x030E, 0x00 },
++	{ 0x030F, 0xD8 },
++	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x01 },
+ 	{ 0x0820, 0x0A },
+ 	{ 0x0821, 0x00 },
+ 	{ 0x0822, 0x00 },
+ 	{ 0x0823, 0x00 },
+ };
+ 
+-static const struct imx258_reg mipi_642mbps_24mhz[] = {
++static const struct imx258_reg mipi_642mbps_24mhz_4l[] = {
+ 	{ 0x0136, 0x18 },
+ 	{ 0x0137, 0x00 },
+ 	{ 0x0301, 0x05 },
+@@ -188,6 +286,8 @@ static const struct imx258_reg mipi_642m
+ 	{ 0x030E, 0x00 },
+ 	{ 0x030F, 0xD8 },
+ 	{ 0x0310, 0x00 },
++
++	{ 0x0114, 0x03 },
+ 	{ 0x0820, 0x0A },
+ 	{ 0x0821, 0x00 },
+ 	{ 0x0822, 0x00 },
+@@ -242,7 +342,6 @@ static const struct imx258_reg mode_4208
+ 	{ 0x5F05, 0xED },
+ 	{ 0x0112, 0x0A },
+ 	{ 0x0113, 0x0A },
+-	{ 0x0114, 0x03 },
+ 	{ 0x0342, 0x14 },
+ 	{ 0x0343, 0xE8 },
+ 	{ 0x0344, 0x00 },
+@@ -355,7 +454,6 @@ static const struct imx258_reg mode_2104
+ 	{ 0x5F05, 0xED },
+ 	{ 0x0112, 0x0A },
+ 	{ 0x0113, 0x0A },
+-	{ 0x0114, 0x03 },
+ 	{ 0x0342, 0x14 },
+ 	{ 0x0343, 0xE8 },
+ 	{ 0x0344, 0x00 },
+@@ -468,7 +566,6 @@ static const struct imx258_reg mode_1048
+ 	{ 0x5F05, 0xED },
+ 	{ 0x0112, 0x0A },
+ 	{ 0x0113, 0x0A },
+-	{ 0x0114, 0x03 },
+ 	{ 0x0342, 0x14 },
+ 	{ 0x0343, 0xE8 },
+ 	{ 0x0344, 0x00 },
+@@ -574,11 +671,13 @@ enum {
+ 
+ /*
+  * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
+- * data rate => double data rate; number of lanes => 4; bits per pixel => 10
++ * data rate => double data rate;
++ * number of lanes => (configurable 2 or 4);
++ * bits per pixel => 10
+  */
+-static u64 link_freq_to_pixel_rate(u64 f)
++static u64 link_freq_to_pixel_rate(u64 f, unsigned int nlanes)
+ {
+-	f *= 2 * 4;
++	f *= 2 * nlanes;
+ 	do_div(f, 10);
+ 
+ 	return f;
+@@ -608,15 +707,27 @@ static const struct imx258_link_freq_con
+ 	[IMX258_LINK_FREQ_1267MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz),
+-			.regs = mipi_1267mbps_19_2mhz,
++			[IMX258_2_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_2l),
++				.regs = mipi_1267mbps_19_2mhz_2l,
++			},
++			[IMX258_4_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_4l),
++				.regs = mipi_1267mbps_19_2mhz_4l,
++			},
+ 		}
+ 	},
+ 	[IMX258_LINK_FREQ_640MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz),
+-			.regs = mipi_640mbps_19_2mhz,
++			[IMX258_2_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_2l),
++				.regs = mipi_640mbps_19_2mhz_2l,
++			},
++			[IMX258_4_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_4l),
++				.regs = mipi_640mbps_19_2mhz_4l,
++			},
+ 		}
+ 	},
+ };
+@@ -625,15 +736,27 @@ static const struct imx258_link_freq_con
+ 	[IMX258_LINK_FREQ_1267MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz),
+-			.regs = mipi_1272mbps_24mhz,
++			[IMX258_2_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_2l),
++				.regs = mipi_1272mbps_24mhz_2l,
++			},
++			[IMX258_4_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_4l),
++				.regs = mipi_1272mbps_24mhz_4l,
++			},
+ 		}
+ 	},
+ 	[IMX258_LINK_FREQ_640MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+ 		.reg_list = {
+-			.num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz),
+-			.regs = mipi_642mbps_24mhz,
++			[IMX258_2_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_2l),
++				.regs = mipi_642mbps_24mhz_2l,
++			},
++			[IMX258_4_LANE_MODE] = {
++				.num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_4l),
++				.regs = mipi_642mbps_24mhz_4l,
++			},
+ 		}
+ 	},
+ };
+@@ -694,6 +817,7 @@ struct imx258 {
+ 
+ 	const struct imx258_link_freq_config *link_freq_configs;
+ 	const s64 *link_freq_menu_items;
++	unsigned int nlanes;
+ 
+ 	/*
+ 	 * Mutex for serialized access:
+@@ -1024,7 +1148,7 @@ static int imx258_set_pad_format(struct
+ 		__v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
+ 
+ 		link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
+-		pixel_rate = link_freq_to_pixel_rate(link_freq);
++		pixel_rate = link_freq_to_pixel_rate(link_freq, imx258->nlanes);
+ 		__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
+ 		/* Update limits and set FPS to default */
+ 		vblank_def = imx258->cur_mode->vts_def -
+@@ -1053,11 +1177,13 @@ static int imx258_start_streaming(struct
+ {
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
+ 	const struct imx258_reg_list *reg_list;
++	const struct imx258_link_freq_config *link_freq_cfg;
+ 	int ret, link_freq_index;
+ 
+ 	/* Setup PLL */
+ 	link_freq_index = imx258->cur_mode->link_freq_index;
+-	reg_list = &imx258->link_freq_configs[link_freq_index].reg_list;
++	link_freq_cfg = &imx258->link_freq_configs[link_freq_index];
++	reg_list = &link_freq_cfg->reg_list[imx258->nlanes == 2 ? 0 : 1];
+ 	ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
+ 	if (ret) {
+ 		dev_err(&client->dev, "%s failed to set plls\n", __func__);
+@@ -1283,9 +1409,11 @@ static int imx258_init_controls(struct i
+ 		imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
+ 	pixel_rate_max =
+-		link_freq_to_pixel_rate(imx258->link_freq_menu_items[0]);
++		link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
++					imx258->nlanes);
+ 	pixel_rate_min =
+-		link_freq_to_pixel_rate(imx258->link_freq_menu_items[1]);
++		link_freq_to_pixel_rate(imx258->link_freq_menu_items[1],
++					imx258->nlanes);
+ 	/* By default, PIXEL_RATE is read only */
+ 	imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
+ 				V4L2_CID_PIXEL_RATE,
+@@ -1393,6 +1521,10 @@ static int imx258_get_regulators(struct
+ static int imx258_probe(struct i2c_client *client)
+ {
+ 	struct imx258 *imx258;
++	struct fwnode_handle *endpoint;
++	struct v4l2_fwnode_endpoint ep = {
++		.bus_type = V4L2_MBUS_CSI2_DPHY
++	};
+ 	int ret;
+ 	u32 val = 0;
+ 
+@@ -1435,13 +1567,38 @@ static int imx258_probe(struct i2c_clien
+ 		return -EINVAL;
+ 	}
+ 
++	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL);
++	if (!endpoint) {
++		dev_err(&client->dev, "Endpoint node not found\n");
++		return -EINVAL;
++	}
++
++	ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep);
++	fwnode_handle_put(endpoint);
++	if (ret == -ENXIO) {
++		dev_err(&client->dev, "Unsupported bus type, should be CSI2\n");
++		goto error_endpoint_poweron;
++	} else if (ret) {
++		dev_err(&client->dev, "Parsing endpoint node failed\n");
++		goto error_endpoint_poweron;
++	}
++
++	/* Get number of data lanes */
++	imx258->nlanes = ep.bus.mipi_csi2.num_data_lanes;
++	if (imx258->nlanes != 2 && imx258->nlanes != 4) {
++		dev_err(&client->dev, "Invalid data lanes: %u\n",
++			imx258->nlanes);
++		ret = -EINVAL;
++		goto error_endpoint_poweron;
++	}
++
+ 	/* Initialize subdev */
+ 	v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
+ 
+ 	/* Will be powered off via pm_runtime_idle */
+ 	ret = imx258_power_on(&client->dev);
+ 	if (ret)
+-		return ret;
++		goto error_endpoint_poweron;
+ 
+ 	/* Check module identity */
+ 	ret = imx258_identify_module(imx258);
+@@ -1486,6 +1643,9 @@ error_handler_free:
+ error_identify:
+ 	imx258_power_off(&client->dev);
+ 
++error_endpoint_poweron:
++	v4l2_fwnode_endpoint_free(&ep);
++
+ 	return ret;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0819-media-i2c-imx258-Follow-normal-V4L2-behaviours-for-c.patch b/target/linux/bcm27xx/patches-5.15/950-0819-media-i2c-imx258-Follow-normal-V4L2-behaviours-for-c.patch
new file mode 100644
index 0000000000..c6e568e79d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0819-media-i2c-imx258-Follow-normal-V4L2-behaviours-for-c.patch
@@ -0,0 +1,103 @@
+From f6523a46d1ad95d1f269a691ddb7998c86b9264f Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 16 Jun 2021 17:19:17 +0100
+Subject: [PATCH] media: i2c: imx258: Follow normal V4L2 behaviours for
+ clipping exposure
+
+V4L2 sensor drivers are expected are expected to clip the supported
+exposure range based on the VBLANK configured.
+IMX258 wasn't doing that as register 0x350 (FRM_LENGTH_CTL)
+switches it to a mode where frame length tracks coarse exposure time.
+
+Disable this mode and clip the range for V4L2_CID_EXPOSURE appropriately
+based on V4L2_CID_VBLANK.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 35 ++++++++++++++++++++++++++++-------
+ 1 file changed, 28 insertions(+), 7 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -32,15 +32,16 @@
+ 
+ #define IMX258_REG_VTS			0x0340
+ 
+-/* HBLANK control - read only */
+-#define IMX258_PPL_DEFAULT		5352
+-
+ /* Exposure control */
+ #define IMX258_REG_EXPOSURE		0x0202
++#define IMX258_EXPOSURE_OFFSET		10
+ #define IMX258_EXPOSURE_MIN		4
+ #define IMX258_EXPOSURE_STEP		1
+ #define IMX258_EXPOSURE_DEFAULT		0x640
+-#define IMX258_EXPOSURE_MAX		65535
++#define IMX258_EXPOSURE_MAX		(IMX258_VTS_MAX - IMX258_EXPOSURE_OFFSET)
++
++/* HBLANK control - read only */
++#define IMX258_PPL_DEFAULT		5352
+ 
+ /* Analog gain control */
+ #define IMX258_REG_ANALOG_GAIN		0x0204
+@@ -377,7 +378,7 @@ static const struct imx258_reg mode_4208
+ 	{ 0x034D, 0x70 },
+ 	{ 0x034E, 0x0C },
+ 	{ 0x034F, 0x30 },
+-	{ 0x0350, 0x01 },
++	{ 0x0350, 0x00 },
+ 	{ 0x0204, 0x00 },
+ 	{ 0x0205, 0x00 },
+ 	{ 0x020E, 0x01 },
+@@ -489,7 +490,7 @@ static const struct imx258_reg mode_2104
+ 	{ 0x034D, 0x38 },
+ 	{ 0x034E, 0x06 },
+ 	{ 0x034F, 0x18 },
+-	{ 0x0350, 0x01 },
++	{ 0x0350, 0x00 },
+ 	{ 0x0204, 0x00 },
+ 	{ 0x0205, 0x00 },
+ 	{ 0x020E, 0x01 },
+@@ -601,7 +602,7 @@ static const struct imx258_reg mode_1048
+ 	{ 0x034D, 0x18 },
+ 	{ 0x034E, 0x03 },
+ 	{ 0x034F, 0x0C },
+-	{ 0x0350, 0x01 },
++	{ 0x0350, 0x00 },
+ 	{ 0x0204, 0x00 },
+ 	{ 0x0205, 0x00 },
+ 	{ 0x020E, 0x01 },
+@@ -966,6 +967,19 @@ static int imx258_update_digital_gain(st
+ 	return 0;
+ }
+ 
++static void imx258_adjust_exposure_range(struct imx258 *imx258)
++{
++	int exposure_max, exposure_def;
++
++	/* Honour the VBLANK limits when setting exposure. */
++	exposure_max = imx258->cur_mode->height + imx258->vblank->val -
++		       IMX258_EXPOSURE_OFFSET;
++	exposure_def = min(exposure_max, imx258->exposure->val);
++	__v4l2_ctrl_modify_range(imx258->exposure, imx258->exposure->minimum,
++				 exposure_max, imx258->exposure->step,
++				 exposure_def);
++}
++
+ static int imx258_set_ctrl(struct v4l2_ctrl *ctrl)
+ {
+ 	struct imx258 *imx258 =
+@@ -974,6 +988,13 @@ static int imx258_set_ctrl(struct v4l2_c
+ 	int ret = 0;
+ 
+ 	/*
++	 * The VBLANK control may change the limits of usable exposure, so check
++	 * and adjust if necessary.
++	 */
++	if (ctrl->id == V4L2_CID_VBLANK)
++		imx258_adjust_exposure_range(imx258);
++
++	/*
+ 	 * Applying V4L2 control value only happens
+ 	 * when power is up for streaming
+ 	 */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0820-media-i2c-imx258-Add-get_selection-for-pixel-array-i.patch b/target/linux/bcm27xx/patches-5.15/950-0820-media-i2c-imx258-Add-get_selection-for-pixel-array-i.patch
new file mode 100644
index 0000000000..d4b8305b4a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0820-media-i2c-imx258-Add-get_selection-for-pixel-array-i.patch
@@ -0,0 +1,169 @@
+From 6e8b94f48ce58e2b9c09000eb77642f3633a6b0b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Wed, 23 Mar 2022 15:48:49 +0000
+Subject: [PATCH] media: i2c: imx258: Add get_selection for pixel array
+ information
+
+Libcamera requires the cropping information for each mode, so
+add this information to the driver.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 90 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 90 insertions(+)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -78,6 +78,14 @@
+ #define REG_CONFIG_MIRROR_VFLIP		0x02
+ #define REG_CONFIG_FLIP_TEST_PATTERN	0x02
+ 
++/* IMX258 native and active pixel array size. */
++#define IMX258_NATIVE_WIDTH		4224U
++#define IMX258_NATIVE_HEIGHT		3192U
++#define IMX258_PIXEL_ARRAY_LEFT		8U
++#define IMX258_PIXEL_ARRAY_TOP		16U
++#define IMX258_PIXEL_ARRAY_WIDTH	4208U
++#define IMX258_PIXEL_ARRAY_HEIGHT	3120U
++
+ struct imx258_reg {
+ 	u16 address;
+ 	u8 val;
+@@ -116,6 +124,9 @@ struct imx258_mode {
+ 	u32 link_freq_index;
+ 	/* Default register values */
+ 	struct imx258_reg_list reg_list;
++
++	/* Analog crop rectangle. */
++	struct v4l2_rect crop;
+ };
+ 
+ /* 4208x3120 needs 1267Mbps/lane, 4 lanes. Use that rate on 2 lanes as well */
+@@ -774,6 +785,12 @@ static const struct imx258_mode supporte
+ 			.regs = mode_4208x3120_regs,
+ 		},
+ 		.link_freq_index = IMX258_LINK_FREQ_1267MBPS,
++		.crop = {
++			.left = IMX258_PIXEL_ARRAY_LEFT,
++			.top = IMX258_PIXEL_ARRAY_TOP,
++			.width = 4208,
++			.height = 3120,
++		},
+ 	},
+ 	{
+ 		.width = 2104,
+@@ -785,6 +802,12 @@ static const struct imx258_mode supporte
+ 			.regs = mode_2104_1560_regs,
+ 		},
+ 		.link_freq_index = IMX258_LINK_FREQ_640MBPS,
++		.crop = {
++			.left = IMX258_PIXEL_ARRAY_LEFT,
++			.top = IMX258_PIXEL_ARRAY_TOP,
++			.width = 4208,
++			.height = 3120,
++		},
+ 	},
+ 	{
+ 		.width = 1048,
+@@ -796,6 +819,12 @@ static const struct imx258_mode supporte
+ 			.regs = mode_1048_780_regs,
+ 		},
+ 		.link_freq_index = IMX258_LINK_FREQ_640MBPS,
++		.crop = {
++			.left = IMX258_PIXEL_ARRAY_LEFT,
++			.top = IMX258_PIXEL_ARRAY_TOP,
++			.width = 4208,
++			.height = 3120,
++		},
+ 	},
+ };
+ 
+@@ -930,6 +959,7 @@ static int imx258_open(struct v4l2_subde
+ 	struct imx258 *imx258 = to_imx258(sd);
+ 	struct v4l2_mbus_framefmt *try_fmt =
+ 		v4l2_subdev_get_try_format(sd, fh->state, 0);
++	struct v4l2_rect *try_crop;
+ 
+ 	/* Initialize try_fmt */
+ 	try_fmt->width = supported_modes[0].width;
+@@ -937,6 +967,13 @@ static int imx258_open(struct v4l2_subde
+ 	try_fmt->code = imx258_get_format_code(imx258);
+ 	try_fmt->field = V4L2_FIELD_NONE;
+ 
++	/* Initialize try_crop */
++	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
++	try_crop->left = IMX258_PIXEL_ARRAY_LEFT;
++	try_crop->top = IMX258_PIXEL_ARRAY_TOP;
++	try_crop->width = IMX258_PIXEL_ARRAY_WIDTH;
++	try_crop->height = IMX258_PIXEL_ARRAY_HEIGHT;
++
+ 	return 0;
+ }
+ 
+@@ -1193,6 +1230,58 @@ static int imx258_set_pad_format(struct
+ 	return 0;
+ }
+ 
++static const struct v4l2_rect *
++__imx258_get_pad_crop(struct imx258 *imx258,
++		      struct v4l2_subdev_state *sd_state,
++		      unsigned int pad, enum v4l2_subdev_format_whence which)
++{
++	switch (which) {
++	case V4L2_SUBDEV_FORMAT_TRY:
++		return v4l2_subdev_get_try_crop(&imx258->sd, sd_state, pad);
++	case V4L2_SUBDEV_FORMAT_ACTIVE:
++		return &imx258->cur_mode->crop;
++	}
++
++	return NULL;
++}
++
++static int imx258_get_selection(struct v4l2_subdev *sd,
++				struct v4l2_subdev_state *sd_state,
++				struct v4l2_subdev_selection *sel)
++{
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP: {
++		struct imx258 *imx258 = to_imx258(sd);
++
++		mutex_lock(&imx258->mutex);
++		sel->r = *__imx258_get_pad_crop(imx258, sd_state, sel->pad,
++						sel->which);
++		mutex_unlock(&imx258->mutex);
++
++		return 0;
++	}
++
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++		sel->r.left = 0;
++		sel->r.top = 0;
++		sel->r.width = IMX258_NATIVE_WIDTH;
++		sel->r.height = IMX258_NATIVE_HEIGHT;
++
++		return 0;
++
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		sel->r.left = IMX258_PIXEL_ARRAY_LEFT;
++		sel->r.top = IMX258_PIXEL_ARRAY_TOP;
++		sel->r.width = IMX258_PIXEL_ARRAY_WIDTH;
++		sel->r.height = IMX258_PIXEL_ARRAY_HEIGHT;
++
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
+ /* Start streaming */
+ static int imx258_start_streaming(struct imx258 *imx258)
+ {
+@@ -1389,6 +1478,7 @@ static const struct v4l2_subdev_pad_ops
+ 	.get_fmt = imx258_get_pad_format,
+ 	.set_fmt = imx258_set_pad_format,
+ 	.enum_frame_size = imx258_enum_frame_size,
++	.get_selection = imx258_get_selection,
+ };
+ 
+ static const struct v4l2_subdev_ops imx258_subdev_ops = {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0821-media-i2c-imx258-Allow-configuration-of-clock-lane-b.patch b/target/linux/bcm27xx/patches-5.15/950-0821-media-i2c-imx258-Allow-configuration-of-clock-lane-b.patch
new file mode 100644
index 0000000000..01d22c2ef2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0821-media-i2c-imx258-Allow-configuration-of-clock-lane-b.patch
@@ -0,0 +1,60 @@
+From d3cbabced959831fb1f04565dd424ece48f1b831 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 31 Mar 2022 15:33:59 +0100
+Subject: [PATCH] media: i2c: imx258: Allow configuration of clock lane
+ behaviour
+
+The sensor supports the clock lane either remaining in HS mode
+during frame blanking, or dropping to LP11.
+
+Add configuration of the mode via V4L2_MBUS_CSI2_CONTINUOUS_CLOCK.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -72,6 +72,8 @@
+ /* Test Pattern Control */
+ #define IMX258_REG_TEST_PATTERN		0x0600
+ 
++#define IMX258_CLK_BLANK_STOP		0x4040
++
+ /* Orientation */
+ #define REG_MIRROR_FLIP_CONTROL		0x0101
+ #define REG_CONFIG_MIRROR_HFLIP		0x01
+@@ -848,6 +850,7 @@ struct imx258 {
+ 	const struct imx258_link_freq_config *link_freq_configs;
+ 	const s64 *link_freq_menu_items;
+ 	unsigned int nlanes;
++	unsigned int csi2_flags;
+ 
+ 	/*
+ 	 * Mutex for serialized access:
+@@ -1300,6 +1303,15 @@ static int imx258_start_streaming(struct
+ 		return ret;
+ 	}
+ 
++	ret = imx258_write_reg(imx258, IMX258_CLK_BLANK_STOP,
++			       IMX258_REG_VALUE_08BIT,
++			       imx258->csi2_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK ?
++			       0 : 1);
++	if (ret) {
++		dev_err(&client->dev, "%s failed to set clock lane mode\n", __func__);
++		return ret;
++	}
++
+ 	/* Apply default values of current mode */
+ 	reg_list = &imx258->cur_mode->reg_list;
+ 	ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
+@@ -1703,6 +1715,8 @@ static int imx258_probe(struct i2c_clien
+ 		goto error_endpoint_poweron;
+ 	}
+ 
++	imx258->csi2_flags = ep.bus.mipi_csi2.flags;
++
+ 	/* Initialize subdev */
+ 	v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0822-media-i2c-imx258-Correct-max-FRM_LENGTH_LINES-value.patch b/target/linux/bcm27xx/patches-5.15/950-0822-media-i2c-imx258-Correct-max-FRM_LENGTH_LINES-value.patch
new file mode 100644
index 0000000000..5782d0e2e9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0822-media-i2c-imx258-Correct-max-FRM_LENGTH_LINES-value.patch
@@ -0,0 +1,26 @@
+From c05b94675920adae7b29cdca120e74a8c05bf703 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 31 Mar 2022 15:39:40 +0100
+Subject: [PATCH] media: i2c: imx258: Correct max FRM_LENGTH_LINES
+ value
+
+The data sheet states that the maximum value for registers
+0x0340/0x0341 FRM_LENGTH_LINES is 65525(decimal), not the
+0xFFFF defined in this driver. Correct this limit.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -28,7 +28,7 @@
+ #define IMX258_VTS_30FPS		0x0c50
+ #define IMX258_VTS_30FPS_2K		0x0638
+ #define IMX258_VTS_30FPS_VGA		0x034c
+-#define IMX258_VTS_MAX			0xffff
++#define IMX258_VTS_MAX			65525
+ 
+ #define IMX258_REG_VTS			0x0340
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0823-media-i2c-imx258-Add-support-for-long-exposure-modes.patch b/target/linux/bcm27xx/patches-5.15/950-0823-media-i2c-imx258-Add-support-for-long-exposure-modes.patch
new file mode 100644
index 0000000000..1c906e963f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0823-media-i2c-imx258-Add-support-for-long-exposure-modes.patch
@@ -0,0 +1,100 @@
+From 4721f56a81e13353f6900a7346bebf330d3d560b Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 31 Mar 2022 16:45:36 +0100
+Subject: [PATCH] media: i2c: imx258: Add support for long exposure
+ modes
+
+The sensor has a register CIT_LSHIFT which extends the exposure
+and frame times by the specified power of 2 for longer
+exposure times.
+
+Add support for this by configuring this register via V4L2_CID_VBLANK
+and extending the V4L2_CID_EXPOSURE range accordingly.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 38 ++++++++++++++++++++++++++++++++------
+ 1 file changed, 32 insertions(+), 6 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -69,6 +69,10 @@
+ #define IMX258_HDR_RATIO_STEP		1
+ #define IMX258_HDR_RATIO_DEFAULT	0x0
+ 
++/* Long exposure multiplier */
++#define IMX258_LONG_EXP_SHIFT_MAX	7
++#define IMX258_LONG_EXP_SHIFT_REG	0x3002
++
+ /* Test Pattern Control */
+ #define IMX258_REG_TEST_PATTERN		0x0600
+ 
+@@ -843,6 +847,8 @@ struct imx258 {
+ 	struct v4l2_ctrl *exposure;
+ 	struct v4l2_ctrl *hflip;
+ 	struct v4l2_ctrl *vflip;
++	/* Current long exposure factor in use. Set through V4L2_CID_VBLANK */
++	unsigned int long_exp_shift;
+ 
+ 	/* Current mode */
+ 	const struct imx258_mode *cur_mode;
+@@ -1020,6 +1026,26 @@ static void imx258_adjust_exposure_range
+ 				 exposure_def);
+ }
+ 
++static int imx258_set_frame_length(struct imx258 *imx258, unsigned int val)
++{
++	int ret;
++
++	imx258->long_exp_shift = 0;
++
++	while (val > IMX258_VTS_MAX) {
++		imx258->long_exp_shift++;
++		val >>= 1;
++	}
++
++	ret = imx258_write_reg(imx258, IMX258_REG_VTS,
++			       IMX258_REG_VALUE_16BIT, val);
++	if (ret)
++		return ret;
++
++	return imx258_write_reg(imx258, IMX258_LONG_EXP_SHIFT_REG,
++				IMX258_REG_VALUE_08BIT, imx258->long_exp_shift);
++}
++
+ static int imx258_set_ctrl(struct v4l2_ctrl *ctrl)
+ {
+ 	struct imx258 *imx258 =
+@@ -1050,7 +1076,7 @@ static int imx258_set_ctrl(struct v4l2_c
+ 	case V4L2_CID_EXPOSURE:
+ 		ret = imx258_write_reg(imx258, IMX258_REG_EXPOSURE,
+ 				IMX258_REG_VALUE_16BIT,
+-				ctrl->val);
++				ctrl->val >> imx258->long_exp_shift);
+ 		break;
+ 	case V4L2_CID_DIGITAL_GAIN:
+ 		ret = imx258_update_digital_gain(imx258, IMX258_REG_VALUE_16BIT,
+@@ -1078,9 +1104,8 @@ static int imx258_set_ctrl(struct v4l2_c
+ 		}
+ 		break;
+ 	case V4L2_CID_VBLANK:
+-		ret = imx258_write_reg(imx258, IMX258_REG_VTS,
+-				       IMX258_REG_VALUE_16BIT,
+-				       imx258->cur_mode->height + ctrl->val);
++		ret = imx258_set_frame_length(imx258,
++					      imx258->cur_mode->height + ctrl->val);
+ 		break;
+ 	case V4L2_CID_VFLIP:
+ 	case V4L2_CID_HFLIP:
+@@ -1218,8 +1243,9 @@ static int imx258_set_pad_format(struct
+ 			     imx258->cur_mode->height;
+ 		__v4l2_ctrl_modify_range(
+ 			imx258->vblank, vblank_min,
+-			IMX258_VTS_MAX - imx258->cur_mode->height, 1,
+-			vblank_def);
++			((1 << IMX258_LONG_EXP_SHIFT_MAX) * IMX258_VTS_MAX) -
++						imx258->cur_mode->height,
++			1, vblank_def);
+ 		__v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def);
+ 		h_blank =
+ 			imx258->link_freq_configs[mode->link_freq_index].pixels_per_line
diff --git a/target/linux/bcm27xx/patches-5.15/950-0824-media-i2c-imx258-Issue-reset-before-starting-streami.patch b/target/linux/bcm27xx/patches-5.15/950-0824-media-i2c-imx258-Issue-reset-before-starting-streami.patch
new file mode 100644
index 0000000000..debe37b8f3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0824-media-i2c-imx258-Issue-reset-before-starting-streami.patch
@@ -0,0 +1,41 @@
+From 4207b34a5b5831d5fea177a1a005eec692cc3722 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 31 Mar 2022 17:12:12 +0100
+Subject: [PATCH] media: i2c: imx258: Issue reset before starting
+ streaming
+
+Whilst not documented, register 0x0103 bit 0 is the soft
+reset for the sensor, so send it before trying to configure
+the sensor.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -20,6 +20,8 @@
+ #define IMX258_MODE_STANDBY		0x00
+ #define IMX258_MODE_STREAMING		0x01
+ 
++#define IMX258_REG_RESET		0x0103
++
+ /* Chip ID */
+ #define IMX258_REG_CHIP_ID		0x0016
+ #define IMX258_CHIP_ID			0x0258
+@@ -1319,6 +1321,14 @@ static int imx258_start_streaming(struct
+ 	const struct imx258_link_freq_config *link_freq_cfg;
+ 	int ret, link_freq_index;
+ 
++	ret = imx258_write_reg(imx258, IMX258_REG_RESET, IMX258_REG_VALUE_08BIT,
++			       0x01);
++	if (ret) {
++		dev_err(&client->dev, "%s failed to reset sensor\n", __func__);
++		return ret;
++	}
++	usleep_range(10000, 15000);
++
+ 	/* Setup PLL */
+ 	link_freq_index = imx258->cur_mode->link_freq_index;
+ 	link_freq_cfg = &imx258->link_freq_configs[link_freq_index];
diff --git a/target/linux/bcm27xx/patches-5.15/950-0825-media-i2c-imx258-Set-pixel_rate-range-to-the-same-as.patch b/target/linux/bcm27xx/patches-5.15/950-0825-media-i2c-imx258-Set-pixel_rate-range-to-the-same-as.patch
new file mode 100644
index 0000000000..e4eb53f664
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0825-media-i2c-imx258-Set-pixel_rate-range-to-the-same-as.patch
@@ -0,0 +1,59 @@
+From 3d314e1c554ea4cc64dcdd5e227767a518b7dcb2 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 1 Apr 2022 18:54:12 +0100
+Subject: [PATCH] media: i2c: imx258: Set pixel_rate range to the same
+ as the value
+
+With a read only control there is limited point in advertising
+a minimum and maximum for the control, so change to set the
+value, min, and max all to the selected pixel rate.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 18 +++++++-----------
+ 1 file changed, 7 insertions(+), 11 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -1237,7 +1237,8 @@ static int imx258_set_pad_format(struct
+ 
+ 		link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
+ 		pixel_rate = link_freq_to_pixel_rate(link_freq, imx258->nlanes);
+-		__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
++		__v4l2_ctrl_modify_range(imx258->pixel_rate, pixel_rate,
++					 pixel_rate, 1, pixel_rate);
+ 		/* Update limits and set FPS to default */
+ 		vblank_def = imx258->cur_mode->vts_def -
+ 			     imx258->cur_mode->height;
+@@ -1546,8 +1547,7 @@ static int imx258_init_controls(struct i
+ 	struct v4l2_ctrl_handler *ctrl_hdlr;
+ 	s64 vblank_def;
+ 	s64 vblank_min;
+-	s64 pixel_rate_min;
+-	s64 pixel_rate_max;
++	s64 pixel_rate;
+ 	int ret;
+ 
+ 	ctrl_hdlr = &imx258->ctrl_handler;
+@@ -1567,17 +1567,13 @@ static int imx258_init_controls(struct i
+ 	if (imx258->link_freq)
+ 		imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
+-	pixel_rate_max =
+-		link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
+-					imx258->nlanes);
+-	pixel_rate_min =
+-		link_freq_to_pixel_rate(imx258->link_freq_menu_items[1],
+-					imx258->nlanes);
++	pixel_rate = link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
++					     imx258->nlanes);
+ 	/* By default, PIXEL_RATE is read only */
+ 	imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
+ 				V4L2_CID_PIXEL_RATE,
+-				pixel_rate_min, pixel_rate_max,
+-				1, pixel_rate_max);
++				pixel_rate, pixel_rate,
++				1, pixel_rate);
+ 
+ 
+ 	vblank_def = imx258->cur_mode->vts_def - imx258->cur_mode->height;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0826-media-i2c-imx258-Support-faster-pixel-rate-on-binned.patch b/target/linux/bcm27xx/patches-5.15/950-0826-media-i2c-imx258-Support-faster-pixel-rate-on-binned.patch
new file mode 100644
index 0000000000..af8b8e1670
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0826-media-i2c-imx258-Support-faster-pixel-rate-on-binned.patch
@@ -0,0 +1,254 @@
+From abf839bec9fa64ce922d63b2625b02e8e5c5b7bb Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 1 Apr 2022 18:56:54 +0100
+Subject: [PATCH] media: i2c: imx258: Support faster pixel rate on
+ binned modes
+
+With the binned modes, there is little point in faithfully
+reproducing the horizontal line length of 5352 pixels on the CSI2
+bus, and the FIFO between the pixel array and MIPI serialiser
+allows us to remove that dependency.
+
+Allow the pixel array to run with the normal settings, with the MIPI
+serialiser at half the rate. This requires some additional
+information for the link frequency to pixel rate function that
+needs to be added to the configuration tables.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/media/i2c/imx258.c | 107 ++++++++++++++++++++++++-------------
+ 1 file changed, 70 insertions(+), 37 deletions(-)
+
+--- a/drivers/media/i2c/imx258.c
++++ b/drivers/media/i2c/imx258.c
+@@ -104,6 +104,11 @@ struct imx258_reg_list {
+ 	const struct imx258_reg *regs;
+ };
+ 
++struct imx258_link_cfg {
++	unsigned int lf_to_pix_rate_factor;
++	struct imx258_reg_list reg_list;
++};
++
+ #define IMX258_LANE_CONFIGS	2
+ #define IMX258_2_LANE_MODE	0
+ #define IMX258_4_LANE_MODE	1
+@@ -113,8 +118,8 @@ struct imx258_link_freq_config {
+ 	u64 link_frequency;
+ 	u32 pixels_per_line;
+ 
+-	/* PLL registers for this link frequency */
+-	struct imx258_reg_list reg_list[IMX258_LANE_CONFIGS];
++	/* Configuration for this link frequency / num lanes selection */
++	struct imx258_link_cfg link_cfg[IMX258_LANE_CONFIGS];
+ };
+ 
+ /* Mode : resolution and related config&values */
+@@ -273,7 +278,7 @@ static const struct imx258_reg mipi_640m
+ static const struct imx258_reg mipi_642mbps_24mhz_2l[] = {
+ 	{ 0x0136, 0x18 },
+ 	{ 0x0137, 0x00 },
+-	{ 0x0301, 0x0A },
++	{ 0x0301, 0x05 },
+ 	{ 0x0303, 0x02 },
+ 	{ 0x0305, 0x04 },
+ 	{ 0x0306, 0x00 },
+@@ -690,14 +695,22 @@ enum {
+ };
+ 
+ /*
+- * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
+- * data rate => double data rate;
+- * number of lanes => (configurable 2 or 4);
+- * bits per pixel => 10
++ * Pixel rate does not necessarily relate to link frequency on this sensor as
++ * there is a FIFO between the pixel array pipeline and the MIPI serializer.
++ * The recommendation from Sony is that the pixel array is always run with a
++ * line length of 5352 pixels, which means that there is a large amount of
++ * blanking time for the 1048x780 mode. There is no need to replicate this
++ * blanking on the CSI2 bus, and the configuration of register 0x0301 allows the
++ * divider to be altered.
++ *
++ * The actual factor between link frequency and pixel rate is in the
++ * imx258_link_cfg, so use this to convert between the two.
++ * bits per pixel being 10, and D-PHY being DDR is assumed by this function, so
++ * the value is only the combination of number of lanes and pixel clock divider.
+  */
+-static u64 link_freq_to_pixel_rate(u64 f, unsigned int nlanes)
++static u64 link_freq_to_pixel_rate(u64 f, const struct imx258_link_cfg *link_cfg)
+ {
+-	f *= 2 * nlanes;
++	f *= 2 * link_cfg->lf_to_pix_rate_factor;
+ 	do_div(f, 10);
+ 
+ 	return f;
+@@ -722,31 +735,33 @@ static const s64 link_freq_menu_items_24
+ 	IMX258_LINK_FREQ_321MHZ,
+ };
+ 
++#define REGS(_list) { .num_of_regs = ARRAY_SIZE(_list), .regs = _list, }
++
+ /* Link frequency configs */
+ static const struct imx258_link_freq_config link_freq_configs_19_2[] = {
+ 	[IMX258_LINK_FREQ_1267MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+-		.reg_list = {
++		.link_cfg = {
+ 			[IMX258_2_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_2l),
+-				.regs = mipi_1267mbps_19_2mhz_2l,
++				.lf_to_pix_rate_factor = 2 * 2,
++				.reg_list = REGS(mipi_1267mbps_19_2mhz_2l),
+ 			},
+ 			[IMX258_4_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz_4l),
+-				.regs = mipi_1267mbps_19_2mhz_4l,
++				.lf_to_pix_rate_factor = 4,
++				.reg_list = REGS(mipi_1267mbps_19_2mhz_4l),
+ 			},
+ 		}
+ 	},
+ 	[IMX258_LINK_FREQ_640MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+-		.reg_list = {
++		.link_cfg = {
+ 			[IMX258_2_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_2l),
+-				.regs = mipi_640mbps_19_2mhz_2l,
++				.lf_to_pix_rate_factor = 2,
++				.reg_list = REGS(mipi_640mbps_19_2mhz_2l),
+ 			},
+ 			[IMX258_4_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz_4l),
+-				.regs = mipi_640mbps_19_2mhz_4l,
++				.lf_to_pix_rate_factor = 4,
++				.reg_list = REGS(mipi_640mbps_19_2mhz_4l),
+ 			},
+ 		}
+ 	},
+@@ -755,27 +770,27 @@ static const struct imx258_link_freq_con
+ static const struct imx258_link_freq_config link_freq_configs_24[] = {
+ 	[IMX258_LINK_FREQ_1267MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+-		.reg_list = {
++		.link_cfg = {
+ 			[IMX258_2_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_2l),
+-				.regs = mipi_1272mbps_24mhz_2l,
++				.lf_to_pix_rate_factor = 2,
++				.reg_list = REGS(mipi_1272mbps_24mhz_2l),
+ 			},
+ 			[IMX258_4_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz_4l),
+-				.regs = mipi_1272mbps_24mhz_4l,
++				.lf_to_pix_rate_factor = 4,
++				.reg_list = REGS(mipi_1272mbps_24mhz_4l),
+ 			},
+ 		}
+ 	},
+ 	[IMX258_LINK_FREQ_640MBPS] = {
+ 		.pixels_per_line = IMX258_PPL_DEFAULT,
+-		.reg_list = {
++		.link_cfg = {
+ 			[IMX258_2_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_2l),
+-				.regs = mipi_642mbps_24mhz_2l,
++				.lf_to_pix_rate_factor = 2 * 2,
++				.reg_list = REGS(mipi_642mbps_24mhz_2l),
+ 			},
+ 			[IMX258_4_LANE_MODE] = {
+-				.num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz_4l),
+-				.regs = mipi_642mbps_24mhz_4l,
++				.lf_to_pix_rate_factor = 4,
++				.reg_list = REGS(mipi_642mbps_24mhz_4l),
+ 			},
+ 		}
+ 	},
+@@ -857,7 +872,7 @@ struct imx258 {
+ 
+ 	const struct imx258_link_freq_config *link_freq_configs;
+ 	const s64 *link_freq_menu_items;
+-	unsigned int nlanes;
++	unsigned int lane_mode_idx;
+ 	unsigned int csi2_flags;
+ 
+ 	/*
+@@ -1212,8 +1227,10 @@ static int imx258_set_pad_format(struct
+ 				 struct v4l2_subdev_format *fmt)
+ {
+ 	struct imx258 *imx258 = to_imx258(sd);
+-	const struct imx258_mode *mode;
++	const struct imx258_link_freq_config *link_freq_cfgs;
++	const struct imx258_link_cfg *link_cfg;
+ 	struct v4l2_mbus_framefmt *framefmt;
++	const struct imx258_mode *mode;
+ 	s32 vblank_def;
+ 	s32 vblank_min;
+ 	s64 h_blank;
+@@ -1236,7 +1253,11 @@ static int imx258_set_pad_format(struct
+ 		__v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
+ 
+ 		link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
+-		pixel_rate = link_freq_to_pixel_rate(link_freq, imx258->nlanes);
++		link_freq_cfgs =
++			&imx258->link_freq_configs[mode->link_freq_index];
++
++		link_cfg = &link_freq_cfgs->link_cfg[imx258->lane_mode_idx];
++		pixel_rate = link_freq_to_pixel_rate(link_freq, link_cfg);
+ 		__v4l2_ctrl_modify_range(imx258->pixel_rate, pixel_rate,
+ 					 pixel_rate, 1, pixel_rate);
+ 		/* Update limits and set FPS to default */
+@@ -1333,7 +1354,8 @@ static int imx258_start_streaming(struct
+ 	/* Setup PLL */
+ 	link_freq_index = imx258->cur_mode->link_freq_index;
+ 	link_freq_cfg = &imx258->link_freq_configs[link_freq_index];
+-	reg_list = &link_freq_cfg->reg_list[imx258->nlanes == 2 ? 0 : 1];
++
++	reg_list = &link_freq_cfg->link_cfg[imx258->lane_mode_idx].reg_list;
+ 	ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
+ 	if (ret) {
+ 		dev_err(&client->dev, "%s failed to set plls\n", __func__);
+@@ -1543,8 +1565,10 @@ static const struct v4l2_subdev_internal
+ static int imx258_init_controls(struct imx258 *imx258)
+ {
+ 	struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
++	const struct imx258_link_freq_config *link_freq_cfgs;
+ 	struct v4l2_fwnode_device_properties props;
+ 	struct v4l2_ctrl_handler *ctrl_hdlr;
++	const struct imx258_link_cfg *link_cfg;
+ 	s64 vblank_def;
+ 	s64 vblank_min;
+ 	s64 pixel_rate;
+@@ -1567,8 +1591,11 @@ static int imx258_init_controls(struct i
+ 	if (imx258->link_freq)
+ 		imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ 
++	link_freq_cfgs = &imx258->link_freq_configs[0];
++	link_cfg = link_freq_cfgs[imx258->lane_mode_idx].link_cfg;
+ 	pixel_rate = link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
+-					     imx258->nlanes);
++					     link_cfg);
++
+ 	/* By default, PIXEL_RATE is read only */
+ 	imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
+ 				V4L2_CID_PIXEL_RATE,
+@@ -1739,10 +1766,16 @@ static int imx258_probe(struct i2c_clien
+ 	}
+ 
+ 	/* Get number of data lanes */
+-	imx258->nlanes = ep.bus.mipi_csi2.num_data_lanes;
+-	if (imx258->nlanes != 2 && imx258->nlanes != 4) {
++	switch (ep.bus.mipi_csi2.num_data_lanes) {
++	case 2:
++		imx258->lane_mode_idx = IMX258_2_LANE_MODE;
++		break;
++	case 4:
++		imx258->lane_mode_idx = IMX258_4_LANE_MODE;
++		break;
++	default:
+ 		dev_err(&client->dev, "Invalid data lanes: %u\n",
+-			imx258->nlanes);
++			ep.bus.mipi_csi2.num_data_lanes);
+ 		ret = -EINVAL;
+ 		goto error_endpoint_poweron;
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0827-dtoverlays-Add-overlay-for-Sony-IMX258-image-sensor.patch b/target/linux/bcm27xx/patches-5.15/950-0827-dtoverlays-Add-overlay-for-Sony-IMX258-image-sensor.patch
new file mode 100644
index 0000000000..5e983251a0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0827-dtoverlays-Add-overlay-for-Sony-IMX258-image-sensor.patch
@@ -0,0 +1,201 @@
+From a36565341b0b144ea37c4793793e3c835cc6458d Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 10 Jun 2021 17:42:47 +0100
+Subject: [PATCH] dtoverlays: Add overlay for Sony IMX258 image sensor
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |  18 +++
+ arch/arm/boot/dts/overlays/imx258-overlay.dts | 148 ++++++++++++++++++
+ 3 files changed, 167 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/imx258-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -98,6 +98,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	i2s-gpio28-31.dtbo \
+ 	ilitek251x.dtbo \
+ 	imx219.dtbo \
++	imx258.dtbo \
+ 	imx290.dtbo \
+ 	imx378.dtbo \
+ 	imx477.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1872,6 +1872,24 @@ Params: rotation                Mounting
+         vcm                     Configure a VCM focus drive on the sensor.
+ 
+ 
++Name:   imx258
++Info:   Sony IMX258 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=imx258,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 180)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
++        vcm                     Configure a VCM focus drive on the sensor.
++        4lane                   Enable 4 CSI2 lanes. This requires a Compute
++                                Module (1, 3, or 4).
++
++
+ Name:   imx290
+ Info:   Sony IMX290 camera module.
+         Uses Unicam 1, which is the standard camera connector on most Pi
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/imx258-overlay.dts
+@@ -0,0 +1,148 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for IMX258 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	clk_frag: fragment@3 {
++		target = <&cam1_clk>;
++		cam_clk: __overlay__ {
++			clock-frequency = <24000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	reg_frag: fragment@5 {
++		target = <&cam1_reg>;
++		cam_reg: __overlay__ {
++			regulator-name = "imx258_vana";
++			startup-delay-us = <300000>;
++			regulator-min-microvolt = <2700000>;
++			regulator-max-microvolt = <2700000>;
++		};
++	};
++
++	i2c_frag: fragment@100 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			imx258: imx258@10 {
++				compatible = "sony,imx258";
++				reg = <0x10>;
++				status = "okay";
++
++				clocks = <&cam1_clk>;
++				clock-names = "xclk";
++
++				vana-supply = <&cam1_reg>;	/* 2.8v */
++				vdig-supply = <&cam_dummy_reg>;	/* 1.05v */
++				vif-supply = <&cam_dummy_reg>;	/* 1.8v */
++
++				rotation = <180>;
++				orientation = <2>;
++
++				port {
++					imx258_0: endpoint {
++						remote-endpoint = <&csi_ep>;
++						clock-lanes = <0>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <633600000
++								320000000>;
++					};
++				};
++			};
++
++			vcm: ad5398@0c {
++				compatible = "adi,ad5398";
++				reg = <0x0c>;
++				status = "disabled";
++				VANA-supply = <&cam1_reg>;
++			};
++		};
++	};
++
++	csi_frag: fragment@101 {
++		target = <&csi1>;
++		csi: __overlay__ {
++			status = "okay";
++			brcm,media-controller;
++
++			port {
++				csi_ep: endpoint {
++					remote-endpoint = <&imx258_0>;
++					clock-lanes = <0>;
++					clock-noncontinuous;
++				};
++			};
++		};
++	};
++
++	fragment@102 {
++		target = <&imx258_0>;
++		__overlay__ {
++			data-lanes = <1 2>;
++			link-frequencies = /bits/ 64 <633600000
++						      320000000>;
++		};
++	};
++
++	fragment@103 {
++		target = <&imx258_0>;
++		__dormant__ {
++			data-lanes = <1 2 3 4>;
++			link-frequencies =
++				/bits/ 64 <633600000 320000000>;
++		};
++	};
++
++	fragment@104 {
++		target = <&csi_ep>;
++		__overlay__ {
++			data-lanes = <1 2>;
++		};
++	};
++
++	fragment@105 {
++		target = <&csi_ep>;
++		__dormant__ {
++			data-lanes = <1 2 3 4>;
++		};
++	};
++
++	__overrides__ {
++		rotation = <&imx258>,"rotation:0";
++		orientation = <&imx258>,"orientation:0";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&reg_frag>, "target:0=",<&cam0_reg>,
++		       <&imx258>, "clocks:0=",<&cam0_clk>,
++		       <&imx258>, "vana-supply:0=",<&cam0_reg>;
++		vcm = <&vcm>, "status=okay",
++		      <&imx258>,"lens-focus:0=", <&vcm>;
++		4lane = <0>, "-102+103-104+105";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0828-Add-support-for-the-AudioInjector.net-bare-i2s-sound.patch b/target/linux/bcm27xx/patches-5.15/950-0828-Add-support-for-the-AudioInjector.net-bare-i2s-sound.patch
new file mode 100644
index 0000000000..b5e624a810
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0828-Add-support-for-the-AudioInjector.net-bare-i2s-sound.patch
@@ -0,0 +1,92 @@
+From e6afcd3974550086b86bbd09ed1f5231d31757a3 Mon Sep 17 00:00:00 2001
+From: Matt Flax <flatmax@flatmax.org>
+Date: Tue, 12 Apr 2022 02:28:07 +1000
+Subject: [PATCH] Add support for the AudioInjector.net bare i2s sound
+ card
+
+Signed-off-by: Matt Flax <flatmax@flatmax.org>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             |  6 +++
+ .../audioinjector-bare-i2s-overlay.dts        | 50 +++++++++++++++++++
+ 3 files changed, 57 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/audioinjector-bare-i2s-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -25,6 +25,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	applepi-dac.dtbo \
+ 	at86rf233.dtbo \
+ 	audioinjector-addons.dtbo \
++	audioinjector-bare-i2s.dtbo \
+ 	audioinjector-isolated-soundcard.dtbo \
+ 	audioinjector-ultra.dtbo \
+ 	audioinjector-wm8731-audio.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -601,6 +601,12 @@ Params: non-stop-clocks         Keeps th
+                                 is paused or stopped (default off)
+ 
+ 
++Name:   audioinjector-bare-i2s
++Info:   Configures the audioinjector.net audio bare i2s soundcard
++Load:   dtoverlay=audioinjector-bare-i2s
++Params: <None>
++
++
+ Name:   audioinjector-isolated-soundcard
+ Info:   Configures the audioinjector.net isolated soundcard
+ Load:   dtoverlay=audioinjector-isolated-soundcard
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/audioinjector-bare-i2s-overlay.dts
+@@ -0,0 +1,50 @@
++// Definitions for audioinjector.net audio soundcard
++/dts-v1/;
++/plugin/;
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2s>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/";
++		__overlay__ {
++			codec_bare: codec_bare {
++				compatible = "linux,spdif-dit";
++				#sound-dai-cells = <0>;
++				status = "okay";
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&sound>;
++		__overlay__ {
++			compatible = "simple-audio-card";
++			i2s-controller = <&i2s>;
++			status = "okay";
++
++			simple-audio-card,name = "audioinjector-bare";
++			simple-audio-card,format = "i2s";
++
++			simple-audio-card,bitclock-master = <&dailink0_master>;
++			simple-audio-card,frame-master = <&dailink0_master>;
++
++			dailink0_master: simple-audio-card,cpu {
++				sound-dai = <&i2s>;
++				dai-tdm-slot-num = <2>;
++				dai-tdm-slot-width = <32>;
++			};
++
++			snd_codec: simple-audio-card,codec {
++					sound-dai = <&codec_bare>;
++			};
++		};
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0829-vc4_hdmi-Remove-VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWA.patch b/target/linux/bcm27xx/patches-5.15/950-0829-vc4_hdmi-Remove-VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWA.patch
new file mode 100644
index 0000000000..fc5e3c960f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0829-vc4_hdmi-Remove-VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWA.patch
@@ -0,0 +1,26 @@
+From 8e294ef67e3c437e2a9f932141762dc976cf967f Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Wed, 30 Mar 2022 17:49:31 +0100
+Subject: [PATCH] vc4_hdmi: Remove
+ VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWAYS_KEEPOUT
+
+This bit ensures data island packets are never generated when disallowed by HDCP.
+As no Pi boards support HDCP this is providing an unnecessary restriction
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -1550,9 +1550,6 @@ static void vc4_hdmi_encoder_post_crtc_e
+ 
+ 		WARN_ON(!(HDMI_READ(HDMI_SCHEDULER_CONTROL) &
+ 			  VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE));
+-		HDMI_WRITE(HDMI_SCHEDULER_CONTROL,
+-			   HDMI_READ(HDMI_SCHEDULER_CONTROL) |
+-			   VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWAYS_KEEPOUT);
+ 
+ 		HDMI_WRITE(HDMI_RAM_PACKET_CONFIG,
+ 			   VC4_HDMI_RAM_PACKET_ENABLE);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0830-overlays-mipi-dbi-spi-width-mm-and-height-mm-are-man.patch b/target/linux/bcm27xx/patches-5.15/950-0830-overlays-mipi-dbi-spi-width-mm-and-height-mm-are-man.patch
new file mode 100644
index 0000000000..ad21f479ac
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0830-overlays-mipi-dbi-spi-width-mm-and-height-mm-are-man.patch
@@ -0,0 +1,33 @@
+From 4674b5a66946136f95de45b9e2e51a3f9330966c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Wed, 13 Apr 2022 19:28:35 +0200
+Subject: [PATCH] overlays: mipi-dbi-spi: width-mm and height-mm are
+ mandatory
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+There was a last minute change to the binding in commit 1ecc0c09f19f
+("dt-bindings: display: panel: mipi-dbi-spi: Make width-mm/height-mm mandatory").
+This was done so userspace can calculate DPI.
+
+Update the overlay to ensure it will work with future kernels.
+The driver changes won't be backported to rpi-5.15.
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts
++++ b/arch/arm/boot/dts/overlays/mipi-dbi-spi-overlay.dts
+@@ -31,6 +31,9 @@
+ 				reg = <0>;
+ 				spi-max-frequency = <32000000>;
+ 
++				width-mm = <0>;
++				height-mm = <0>;
++
+ 				timing: panel-timing {
+ 					hactive = <320>;
+ 					vactive = <240>;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0831-clk-Introduce-Kunit-Tests-for-the-framework.patch b/target/linux/bcm27xx/patches-5.15/950-0831-clk-Introduce-Kunit-Tests-for-the-framework.patch
new file mode 100644
index 0000000000..29f35f8cec
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0831-clk-Introduce-Kunit-Tests-for-the-framework.patch
@@ -0,0 +1,842 @@
+From 93028ab89e186100ef28ba6d6adcc30f14fa3dc3 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 19 Jan 2022 16:22:19 +0100
+Subject: [PATCH] clk: Introduce Kunit Tests for the framework
+
+Let's test various parts of the rate-related clock API with the kunit
+testing framework.
+
+Cc: kunit-dev@googlegroups.com
+Tested-by: Daniel Latypov <dlatypov@google.com>
+Suggested-by: Stephen Boyd <sboyd@kernel.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/.kunitconfig |   3 +
+ drivers/clk/Kconfig      |   8 +
+ drivers/clk/Makefile     |   1 +
+ drivers/clk/clk_test.c   | 787 +++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 799 insertions(+)
+ create mode 100644 drivers/clk/.kunitconfig
+ create mode 100644 drivers/clk/clk_test.c
+
+--- /dev/null
++++ b/drivers/clk/.kunitconfig
+@@ -0,0 +1,3 @@
++CONFIG_KUNIT=y
++CONFIG_COMMON_CLK=y
++CONFIG_CLK_KUNIT_TEST=y
+--- a/drivers/clk/Kconfig
++++ b/drivers/clk/Kconfig
+@@ -427,4 +427,12 @@ source "drivers/clk/x86/Kconfig"
+ source "drivers/clk/xilinx/Kconfig"
+ source "drivers/clk/zynqmp/Kconfig"
+ 
++# Kunit test cases
++config CLK_KUNIT_TEST
++	tristate "Basic Clock Framework Kunit Tests" if !KUNIT_ALL_TESTS
++	depends on KUNIT
++	default KUNIT_ALL_TESTS
++	help
++	  Kunit tests for the common clock framework.
++
+ endif
+--- a/drivers/clk/Makefile
++++ b/drivers/clk/Makefile
+@@ -2,6 +2,7 @@
+ # common clock types
+ obj-$(CONFIG_HAVE_CLK)		+= clk-devres.o clk-bulk.o clkdev.o
+ obj-$(CONFIG_COMMON_CLK)	+= clk.o
++obj-$(CONFIG_CLK_KUNIT_TEST)	+= clk_test.o
+ obj-$(CONFIG_COMMON_CLK)	+= clk-divider.o
+ obj-$(CONFIG_COMMON_CLK)	+= clk-fixed-factor.o
+ obj-$(CONFIG_COMMON_CLK)	+= clk-fixed-rate.o
+--- /dev/null
++++ b/drivers/clk/clk_test.c
+@@ -0,0 +1,787 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Kunit test for clk rate management
++ */
++#include <linux/clk.h>
++#include <linux/clk-provider.h>
++
++/* Needed for clk_hw_get_clk() */
++#include "clk.h"
++
++#include <kunit/test.h>
++
++#define DUMMY_CLOCK_INIT_RATE	(42 * 1000 * 1000)
++#define DUMMY_CLOCK_RATE_1	(142 * 1000 * 1000)
++#define DUMMY_CLOCK_RATE_2	(242 * 1000 * 1000)
++
++struct clk_dummy_context {
++	struct clk_hw hw;
++	unsigned long rate;
++};
++
++static unsigned long clk_dummy_recalc_rate(struct clk_hw *hw,
++					   unsigned long parent_rate)
++{
++	struct clk_dummy_context *ctx =
++		container_of(hw, struct clk_dummy_context, hw);
++
++	return ctx->rate;
++}
++
++static int clk_dummy_determine_rate(struct clk_hw *hw,
++				    struct clk_rate_request *req)
++{
++	/* Just return the same rate without modifying it */
++	return 0;
++}
++
++static int clk_dummy_maximize_rate(struct clk_hw *hw,
++				   struct clk_rate_request *req)
++{
++	/*
++	 * If there's a maximum set, always run the clock at the maximum
++	 * allowed.
++	 */
++	if (req->max_rate < ULONG_MAX)
++		req->rate = req->max_rate;
++
++	return 0;
++}
++
++static int clk_dummy_minimize_rate(struct clk_hw *hw,
++				   struct clk_rate_request *req)
++{
++	/*
++	 * If there's a minimum set, always run the clock at the minimum
++	 * allowed.
++	 */
++	if (req->min_rate > 0)
++		req->rate = req->min_rate;
++
++	return 0;
++}
++
++static int clk_dummy_set_rate(struct clk_hw *hw,
++			      unsigned long rate,
++			      unsigned long parent_rate)
++{
++	struct clk_dummy_context *ctx =
++		container_of(hw, struct clk_dummy_context, hw);
++
++	ctx->rate = rate;
++	return 0;
++}
++
++static const struct clk_ops clk_dummy_rate_ops = {
++	.recalc_rate = clk_dummy_recalc_rate,
++	.determine_rate = clk_dummy_determine_rate,
++	.set_rate = clk_dummy_set_rate,
++};
++
++static const struct clk_ops clk_dummy_maximize_rate_ops = {
++	.recalc_rate = clk_dummy_recalc_rate,
++	.determine_rate = clk_dummy_maximize_rate,
++	.set_rate = clk_dummy_set_rate,
++};
++
++static const struct clk_ops clk_dummy_minimize_rate_ops = {
++	.recalc_rate = clk_dummy_recalc_rate,
++	.determine_rate = clk_dummy_minimize_rate,
++	.set_rate = clk_dummy_set_rate,
++};
++
++static int clk_test_init_with_ops(struct kunit *test, const struct clk_ops *ops)
++{
++	struct clk_dummy_context *ctx;
++	struct clk_init_data init = { };
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	ctx->rate = DUMMY_CLOCK_INIT_RATE;
++	test->priv = ctx;
++
++	init.name = "test_dummy_rate";
++	init.ops = ops;
++	ctx->hw.init = &init;
++
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++static int clk_test_init(struct kunit *test)
++{
++	return clk_test_init_with_ops(test, &clk_dummy_rate_ops);
++}
++
++static int clk_maximize_test_init(struct kunit *test)
++{
++	return clk_test_init_with_ops(test, &clk_dummy_maximize_rate_ops);
++}
++
++static int clk_minimize_test_init(struct kunit *test)
++{
++	return clk_test_init_with_ops(test, &clk_dummy_minimize_rate_ops);
++}
++
++static void clk_test_exit(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++
++	clk_hw_unregister(&ctx->hw);
++}
++
++/*
++ * Test that the actual rate matches what is returned by clk_get_rate()
++ */
++static void clk_test_get_rate(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, ctx->rate);
++}
++
++/*
++ * Test that, after a call to clk_set_rate(), the rate returned by
++ * clk_get_rate() matches.
++ *
++ * This assumes that clk_ops.determine_rate or clk_ops.round_rate won't
++ * modify the requested rate, which is our case in clk_dummy_rate_ops.
++ */
++static void clk_test_set_get_rate(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_1),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++}
++
++/*
++ * Test that, after several calls to clk_set_rate(), the rate returned
++ * by clk_get_rate() matches the last one.
++ *
++ * This assumes that clk_ops.determine_rate or clk_ops.round_rate won't
++ * modify the requested rate, which is our case in clk_dummy_rate_ops.
++ */
++static void clk_test_set_set_get_rate(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_1),
++			0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++}
++
++/*
++ * Test that clk_round_rate and clk_set_rate are consitent and will
++ * return the same frequency.
++ */
++static void clk_test_round_set_get_rate(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rounded_rate, set_rate;
++
++	rounded_rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_1);
++	KUNIT_ASSERT_GT(test, rounded_rate, 0);
++	KUNIT_EXPECT_EQ(test, rounded_rate, DUMMY_CLOCK_RATE_1);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_1),
++			0);
++
++	set_rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, set_rate, 0);
++	KUNIT_EXPECT_EQ(test, rounded_rate, set_rate);
++}
++
++static struct kunit_case clk_test_cases[] = {
++	KUNIT_CASE(clk_test_get_rate),
++	KUNIT_CASE(clk_test_set_get_rate),
++	KUNIT_CASE(clk_test_set_set_get_rate),
++	KUNIT_CASE(clk_test_round_set_get_rate),
++	{}
++};
++
++static struct kunit_suite clk_test_suite = {
++	.name = "clk-test",
++	.init = clk_test_init,
++	.exit = clk_test_exit,
++	.test_cases = clk_test_cases,
++};
++
++/*
++ * Test that clk_set_rate_range won't return an error for a valid range
++ * and that it will make sure the rate of the clock is within the
++ * boundaries.
++ */
++static void clk_range_test_set_range(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
++}
++
++/*
++ * Test that calling clk_set_rate_range with a minimum rate higher than
++ * the maximum rate returns an error.
++ */
++static void clk_range_test_set_range_invalid(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++
++	KUNIT_EXPECT_LT(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1 + 1000,
++					   DUMMY_CLOCK_RATE_1),
++			0);
++}
++
++/*
++ * Test that users can't set multiple, disjoints, range that would be
++ * impossible to meet.
++ */
++static void clk_range_test_multiple_disjoints_range(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *user1, *user2;
++
++	user1 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user1);
++
++	user2 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user1, 1000, 2000),
++			0);
++
++	KUNIT_EXPECT_LT(test,
++			clk_set_rate_range(user2, 3000, 4000),
++			0);
++
++	clk_put(user2);
++	clk_put(user1);
++}
++
++/*
++ * Test that if our clock has some boundaries and we try to round a rate
++ * lower than the minimum, the returned rate won't be affected by the
++ * boundaries.
++ */
++static void clk_range_test_set_range_round_rate_lower(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1 - 1000);
++}
++
++/*
++ * Test that if our clock has some boundaries and we try to set a rate
++ * lower than the minimum, we'll get an error.
++ */
++static void clk_range_test_set_range_set_rate_lower(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	KUNIT_ASSERT_LT(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_1 - 1000),
++			0);
++}
++
++/*
++ * Test that if our clock has some boundaries and we try to round and
++ * set a rate lower than the minimum, the values won't be consistent
++ * between clk_round_rate() and clk_set_rate().
++ */
++static void clk_range_test_set_range_set_round_rate_consistent_lower(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	long rounded;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rounded = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_ASSERT_GT(test, rounded, 0);
++
++	KUNIT_EXPECT_LT(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_1 - 1000),
++			0);
++
++	KUNIT_EXPECT_NE(test, rounded, clk_get_rate(clk));
++}
++
++/*
++ * Test that if our clock has some boundaries and we try to round a rate
++ * higher than the maximum, the returned rate won't be affected by the
++ * boundaries.
++ */
++static void clk_range_test_set_range_round_rate_higher(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_2 + 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2 + 1000);
++}
++
++/*
++ * Test that if our clock has some boundaries and we try to set a rate
++ * lower than the maximum, we'll get an error.
++ */
++static void clk_range_test_set_range_set_rate_higher(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	KUNIT_ASSERT_LT(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
++			0);
++}
++
++/*
++ * Test that if our clock has some boundaries and we try to round and
++ * set a rate higher than the maximum, the values won't be consistent
++ * between clk_round_rate() and clk_set_rate().
++ */
++static void clk_range_test_set_range_set_round_rate_consistent_higher(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	long rounded;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rounded = clk_round_rate(clk, DUMMY_CLOCK_RATE_2 + 1000);
++	KUNIT_ASSERT_GT(test, rounded, 0);
++
++	KUNIT_EXPECT_LT(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
++			0);
++
++	KUNIT_EXPECT_NE(test, rounded, clk_get_rate(clk));
++}
++
++/*
++ * Test that if our clock has a rate lower than the minimum set by a
++ * call to clk_set_rate_range(), the rate will be raised to match the
++ * new minimum.
++ *
++ * This assumes that clk_ops.determine_rate or clk_ops.round_rate won't
++ * modify the requested rate, which is our case in clk_dummy_rate_ops.
++ */
++static void clk_range_test_set_range_get_rate_raised(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_1 - 1000),
++			0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++}
++
++/*
++ * Test that if our clock has a rate higher than the maximum set by a
++ * call to clk_set_rate_range(), the rate will be lowered to match the
++ * new maximum.
++ *
++ * This assumes that clk_ops.determine_rate or clk_ops.round_rate won't
++ * modify the requested rate, which is our case in clk_dummy_rate_ops.
++ */
++static void clk_range_test_set_range_get_rate_lowered(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
++			0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++}
++
++static struct kunit_case clk_range_test_cases[] = {
++	KUNIT_CASE(clk_range_test_set_range),
++	KUNIT_CASE(clk_range_test_set_range_invalid),
++	KUNIT_CASE(clk_range_test_multiple_disjoints_range),
++	KUNIT_CASE(clk_range_test_set_range_round_rate_lower),
++	KUNIT_CASE(clk_range_test_set_range_set_rate_lower),
++	KUNIT_CASE(clk_range_test_set_range_set_round_rate_consistent_lower),
++	KUNIT_CASE(clk_range_test_set_range_round_rate_higher),
++	KUNIT_CASE(clk_range_test_set_range_set_rate_higher),
++	KUNIT_CASE(clk_range_test_set_range_set_round_rate_consistent_higher),
++	KUNIT_CASE(clk_range_test_set_range_get_rate_raised),
++	KUNIT_CASE(clk_range_test_set_range_get_rate_lowered),
++	{}
++};
++
++static struct kunit_suite clk_range_test_suite = {
++	.name = "clk-range-test",
++	.init = clk_test_init,
++	.exit = clk_test_exit,
++	.test_cases = clk_range_test_cases,
++};
++
++/*
++ * Test that if:
++ * - we have several subsequent calls to clk_set_rate_range();
++ * - and we have a round_rate ops that always return the maximum
++ *   frequency allowed;
++ *
++ * The clock will run at the minimum of all maximum boundaries
++ * requested, even if those boundaries aren't there anymore.
++ */
++static void clk_range_test_set_range_rate_maximized(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
++			0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2 - 1000),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
++}
++
++/*
++ * Test that if:
++ * - we have several subsequent calls to clk_set_rate_range(), across
++ *   multiple users;
++ * - and we have a round_rate ops that always return the maximum
++ *   frequency allowed;
++ *
++ * The clock will run at the minimum of all maximum boundaries
++ * requested, even if those boundaries aren't there anymore.
++ */
++static void clk_range_test_multiple_set_range_rate_maximized(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *user1, *user2;
++	unsigned long rate;
++
++	user1 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user1);
++
++	user2 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
++			0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user1,
++					   0,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user2,
++					   0,
++					   DUMMY_CLOCK_RATE_1),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user2, 0, ULONG_MAX),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	clk_put(user2);
++	clk_put(user1);
++}
++
++static struct kunit_case clk_range_maximize_test_cases[] = {
++	KUNIT_CASE(clk_range_test_set_range_rate_maximized),
++	KUNIT_CASE(clk_range_test_multiple_set_range_rate_maximized),
++	{}
++};
++
++static struct kunit_suite clk_range_maximize_test_suite = {
++	.name = "clk-range-maximize-test",
++	.init = clk_maximize_test_init,
++	.exit = clk_test_exit,
++	.test_cases = clk_range_maximize_test_cases,
++};
++
++/*
++ * Test that if:
++ * - we have several subsequent calls to clk_set_rate_range()
++ * - and we have a round_rate ops that always return the minimum
++ *   frequency allowed;
++ *
++ * The clock will run at the maximum of all minimum boundaries
++ * requested, even if those boundaries aren't there anymore.
++*/
++static void clk_range_test_set_range_rate_minimized(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_1 - 1000),
++			0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1 + 1000,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++}
++
++/*
++ * Test that if:
++ * - we have several subsequent calls to clk_set_rate_range(), across
++ *   multiple users;
++ * - and we have a round_rate ops that always return the minimum
++ *   frequency allowed;
++ *
++ * The clock will run at the maximum of all minimum boundaries
++ * requested, even if those boundaries aren't there anymore.
++*/
++static void clk_range_test_multiple_set_range_rate_minimized(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *user1, *user2;
++	unsigned long rate;
++
++	user1 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user1);
++
++	user2 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user1,
++					   DUMMY_CLOCK_RATE_1,
++					   ULONG_MAX),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user2,
++					   DUMMY_CLOCK_RATE_2,
++					   ULONG_MAX),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user2, 0, ULONG_MAX),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++
++	clk_put(user2);
++	clk_put(user1);
++}
++
++static struct kunit_case clk_range_minimize_test_cases[] = {
++	KUNIT_CASE(clk_range_test_set_range_rate_minimized),
++	KUNIT_CASE(clk_range_test_multiple_set_range_rate_minimized),
++	{}
++};
++
++static struct kunit_suite clk_range_minimize_test_suite = {
++	.name = "clk-range-minimize-test",
++	.init = clk_minimize_test_init,
++	.exit = clk_test_exit,
++	.test_cases = clk_range_minimize_test_cases,
++};
++
++kunit_test_suites(
++	&clk_test_suite,
++	&clk_range_test_suite,
++	&clk_range_maximize_test_suite,
++	&clk_range_minimize_test_suite
++);
++MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0832-clk-Always-clamp-the-rounded-rate.patch b/target/linux/bcm27xx/patches-5.15/950-0832-clk-Always-clamp-the-rounded-rate.patch
new file mode 100644
index 0000000000..69e1561e26
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0832-clk-Always-clamp-the-rounded-rate.patch
@@ -0,0 +1,175 @@
+From 9db7cf9f810ff5092e664078165b2e066e546f6a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 5 May 2021 15:35:34 +0200
+Subject: [PATCH] clk: Always clamp the rounded rate
+
+The current core while setting the min and max rate properly in the
+clk_request structure will not make sure that the requested rate is
+within these boundaries, leaving it to each and every driver to make
+sure it is.
+
+It's not clear if this was on purpose or not, but this introduces some
+inconsistencies within the API.
+
+For example, a user setting a range and then calling clk_round_rate()
+with a value outside of that range will get the same value back
+(ignoring any driver adjustements), effectively ignoring the range that
+was just set.
+
+Another one, arguably worse, is that it also makes clk_round_rate() and
+clk_set_rate() behave differently if there's a range and the rate being
+used for both is outside that range. As we have seen, the rate will be
+returned unchanged by clk_round_rate(), but clk_set_rate() will error
+out returning -EINVAL.
+
+Let's make sure the framework will always clamp the rate to the current
+range found on the clock, which will fix both these inconsistencies.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 50 +++++++++++++++++++++++++++---------------
+ 1 file changed, 32 insertions(+), 18 deletions(-)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -310,8 +310,7 @@ static void clk_range_test_multiple_disj
+ 
+ /*
+  * Test that if our clock has some boundaries and we try to round a rate
+- * lower than the minimum, the returned rate won't be affected by the
+- * boundaries.
++ * lower than the minimum, the returned rate will be within range.
+  */
+ static void clk_range_test_set_range_round_rate_lower(struct kunit *test)
+ {
+@@ -328,18 +327,20 @@ static void clk_range_test_set_range_rou
+ 
+ 	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
+ 	KUNIT_ASSERT_GT(test, rate, 0);
+-	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
+ }
+ 
+ /*
+  * Test that if our clock has some boundaries and we try to set a rate
+- * lower than the minimum, we'll get an error.
++ * higher than the maximum, the new rate will be within range.
+  */
+ static void clk_range_test_set_range_set_rate_lower(struct kunit *test)
+ {
+ 	struct clk_dummy_context *ctx = test->priv;
+ 	struct clk_hw *hw = &ctx->hw;
+ 	struct clk *clk = hw->clk;
++	unsigned long rate;
+ 
+ 	KUNIT_ASSERT_EQ(test,
+ 			clk_set_rate_range(clk,
+@@ -347,15 +348,21 @@ static void clk_range_test_set_range_set
+ 					   DUMMY_CLOCK_RATE_2),
+ 			0);
+ 
+-	KUNIT_ASSERT_LT(test,
++	KUNIT_ASSERT_EQ(test,
+ 			clk_set_rate(clk, DUMMY_CLOCK_RATE_1 - 1000),
+ 			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
+ }
+ 
+ /*
+  * Test that if our clock has some boundaries and we try to round and
+- * set a rate lower than the minimum, the values won't be consistent
+- * between clk_round_rate() and clk_set_rate().
++ * set a rate lower than the minimum, the rate returned by
++ * clk_round_rate() will be consistent with the new rate set by
++ * clk_set_rate().
+  */
+ static void clk_range_test_set_range_set_round_rate_consistent_lower(struct kunit *test)
+ {
+@@ -373,17 +380,16 @@ static void clk_range_test_set_range_set
+ 	rounded = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
+ 	KUNIT_ASSERT_GT(test, rounded, 0);
+ 
+-	KUNIT_EXPECT_LT(test,
++	KUNIT_ASSERT_EQ(test,
+ 			clk_set_rate(clk, DUMMY_CLOCK_RATE_1 - 1000),
+ 			0);
+ 
+-	KUNIT_EXPECT_NE(test, rounded, clk_get_rate(clk));
++	KUNIT_EXPECT_EQ(test, rounded, clk_get_rate(clk));
+ }
+ 
+ /*
+  * Test that if our clock has some boundaries and we try to round a rate
+- * higher than the maximum, the returned rate won't be affected by the
+- * boundaries.
++ * higher than the maximum, the returned rate will be within range.
+  */
+ static void clk_range_test_set_range_round_rate_higher(struct kunit *test)
+ {
+@@ -400,18 +406,20 @@ static void clk_range_test_set_range_rou
+ 
+ 	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_2 + 1000);
+ 	KUNIT_ASSERT_GT(test, rate, 0);
+-	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2 + 1000);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
+ }
+ 
+ /*
+  * Test that if our clock has some boundaries and we try to set a rate
+- * lower than the maximum, we'll get an error.
++ * higher than the maximum, the new rate will be within range.
+  */
+ static void clk_range_test_set_range_set_rate_higher(struct kunit *test)
+ {
+ 	struct clk_dummy_context *ctx = test->priv;
+ 	struct clk_hw *hw = &ctx->hw;
+ 	struct clk *clk = hw->clk;
++	unsigned long rate;
+ 
+ 	KUNIT_ASSERT_EQ(test,
+ 			clk_set_rate_range(clk,
+@@ -419,15 +427,21 @@ static void clk_range_test_set_range_set
+ 					   DUMMY_CLOCK_RATE_2),
+ 			0);
+ 
+-	KUNIT_ASSERT_LT(test,
++	KUNIT_ASSERT_EQ(test,
+ 			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
+ 			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
+ }
+ 
+ /*
+  * Test that if our clock has some boundaries and we try to round and
+- * set a rate higher than the maximum, the values won't be consistent
+- * between clk_round_rate() and clk_set_rate().
++ * set a rate higher than the maximum, the rate returned by
++ * clk_round_rate() will be consistent with the new rate set by
++ * clk_set_rate().
+  */
+ static void clk_range_test_set_range_set_round_rate_consistent_higher(struct kunit *test)
+ {
+@@ -445,11 +459,11 @@ static void clk_range_test_set_range_set
+ 	rounded = clk_round_rate(clk, DUMMY_CLOCK_RATE_2 + 1000);
+ 	KUNIT_ASSERT_GT(test, rounded, 0);
+ 
+-	KUNIT_EXPECT_LT(test,
++	KUNIT_ASSERT_EQ(test,
+ 			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
+ 			0);
+ 
+-	KUNIT_EXPECT_NE(test, rounded, clk_get_rate(clk));
++	KUNIT_EXPECT_EQ(test, rounded, clk_get_rate(clk));
+ }
+ 
+ /*
diff --git a/target/linux/bcm27xx/patches-5.15/950-0833-clk-Use-clamp-instead-of-open-coding-our-own.patch b/target/linux/bcm27xx/patches-5.15/950-0833-clk-Use-clamp-instead-of-open-coding-our-own.patch
new file mode 100644
index 0000000000..02a0a12401
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0833-clk-Use-clamp-instead-of-open-coding-our-own.patch
@@ -0,0 +1,33 @@
+From dbd88e6fdd547cf8f6765b8dade9f89cf5c0ead9 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 17 Jan 2022 16:38:10 +0100
+Subject: [PATCH] clk: Use clamp instead of open-coding our own
+
+The code in clk_set_rate_range() will, if the current rate is outside of
+the new range, force it to the minimum or maximum.
+
+Since it's running under the condition that the rate is either lower
+than the minimum, or higher than the maximum, this is equivalent to
+using clamp, while being less readable. Let's switch to using clamp
+instead.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 6 +-----
+ 1 file changed, 1 insertion(+), 5 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -2387,11 +2387,7 @@ int clk_set_rate_range(struct clk *clk,
+ 		 *   this corner case when determining the rate
+ 		 */
+ 
+-		if (rate < min)
+-			rate = min;
+-		else
+-			rate = max;
+-
++		rate = clamp(clk->core->req_rate, min, max);
+ 		ret = clk_core_set_rate_nolock(clk->core, rate);
+ 		if (ret) {
+ 			/* rollback the changes */
diff --git a/target/linux/bcm27xx/patches-5.15/950-0834-clk-Always-set-the-rate-on-clk_set_range_rate.patch b/target/linux/bcm27xx/patches-5.15/950-0834-clk-Always-set-the-rate-on-clk_set_range_rate.patch
new file mode 100644
index 0000000000..b110f717ad
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0834-clk-Always-set-the-rate-on-clk_set_range_rate.patch
@@ -0,0 +1,196 @@
+From c12b9d21ea40c608be608b83f803efdbdfe9657a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 17 Jan 2022 16:43:13 +0100
+Subject: [PATCH] clk: Always set the rate on clk_set_range_rate
+
+When we change a clock minimum or maximum using clk_set_rate_range(),
+clk_set_min_rate() or clk_set_max_rate(), the current code will only
+trigger a new rate change if the rate is outside of the new boundaries.
+
+However, a clock driver might want to always keep the clock rate to
+one of its boundary, for example the minimum to keep the power
+consumption as low as possible.
+
+Since they don't always get called though, clock providers don't have the
+opportunity to implement this behaviour.
+
+Let's trigger a clk_set_rate() on the previous requested rate every time
+clk_set_rate_range() is called. That way, providers that care about the
+new boundaries have a chance to adjust the rate, while providers that
+don't care about those new boundaries will return the same rate than
+before, which will be ignored by clk_set_rate() and won't result in a
+new rate change.
+
+Suggested-by: Stephen Boyd <sboyd@kernel.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c      | 45 ++++++++++++++++----------------
+ drivers/clk/clk_test.c | 58 +++++++++++++++++++-----------------------
+ 2 files changed, 49 insertions(+), 54 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -2372,28 +2372,29 @@ int clk_set_rate_range(struct clk *clk,
+ 		goto out;
+ 	}
+ 
+-	rate = clk_core_get_rate_nolock(clk->core);
+-	if (rate < min || rate > max) {
+-		/*
+-		 * FIXME:
+-		 * We are in bit of trouble here, current rate is outside the
+-		 * the requested range. We are going try to request appropriate
+-		 * range boundary but there is a catch. It may fail for the
+-		 * usual reason (clock broken, clock protected, etc) but also
+-		 * because:
+-		 * - round_rate() was not favorable and fell on the wrong
+-		 *   side of the boundary
+-		 * - the determine_rate() callback does not really check for
+-		 *   this corner case when determining the rate
+-		 */
+-
+-		rate = clamp(clk->core->req_rate, min, max);
+-		ret = clk_core_set_rate_nolock(clk->core, rate);
+-		if (ret) {
+-			/* rollback the changes */
+-			clk->min_rate = old_min;
+-			clk->max_rate = old_max;
+-		}
++	/*
++	 * Since the boundaries have been changed, let's give the
++	 * opportunity to the provider to adjust the clock rate based on
++	 * the new boundaries.
++	 *
++	 * We also need to handle the case where the clock is currently
++	 * outside of the boundaries. Clamping the last requested rate
++	 * to the current minimum and maximum will also handle this.
++	 *
++	 * FIXME:
++	 * There is a catch. It may fail for the usual reason (clock
++	 * broken, clock protected, etc) but also because:
++	 * - round_rate() was not favorable and fell on the wrong
++	 *   side of the boundary
++	 * - the determine_rate() callback does not really check for
++	 *   this corner case when determining the rate
++	 */
++	rate = clamp(clk->core->req_rate, min, max);
++	ret = clk_core_set_rate_nolock(clk->core, rate);
++	if (ret) {
++		/* rollback the changes */
++		clk->min_rate = old_min;
++		clk->max_rate = old_max;
+ 	}
+ 
+ out:
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -549,13 +549,12 @@ static struct kunit_suite clk_range_test
+ };
+ 
+ /*
+- * Test that if:
+- * - we have several subsequent calls to clk_set_rate_range();
+- * - and we have a round_rate ops that always return the maximum
+- *   frequency allowed;
++ * Test that if we have several subsequent calls to
++ * clk_set_rate_range(), the core will reevaluate whether a new rate is
++ * needed each and every time.
+  *
+- * The clock will run at the minimum of all maximum boundaries
+- * requested, even if those boundaries aren't there anymore.
++ * With clk_dummy_maximize_rate_ops, this means that the the rate will
++ * trail along the maximum as it evolves.
+  */
+ static void clk_range_test_set_range_rate_maximized(struct kunit *test)
+ {
+@@ -596,18 +595,16 @@ static void clk_range_test_set_range_rat
+ 
+ 	rate = clk_get_rate(clk);
+ 	KUNIT_ASSERT_GT(test, rate, 0);
+-	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
+ }
+ 
+ /*
+- * Test that if:
+- * - we have several subsequent calls to clk_set_rate_range(), across
+- *   multiple users;
+- * - and we have a round_rate ops that always return the maximum
+- *   frequency allowed;
++ * Test that if we have several subsequent calls to
++ * clk_set_rate_range(), across multiple users, the core will reevaluate
++ * whether a new rate is needed each and every time.
+  *
+- * The clock will run at the minimum of all maximum boundaries
+- * requested, even if those boundaries aren't there anymore.
++ * With clk_dummy_maximize_rate_ops, this means that the the rate will
++ * trail along the maximum as it evolves.
+  */
+ static void clk_range_test_multiple_set_range_rate_maximized(struct kunit *test)
+ {
+@@ -653,7 +650,7 @@ static void clk_range_test_multiple_set_
+ 
+ 	rate = clk_get_rate(clk);
+ 	KUNIT_ASSERT_GT(test, rate, 0);
+-	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
+ 
+ 	clk_put(user2);
+ 	clk_put(user1);
+@@ -673,14 +670,13 @@ static struct kunit_suite clk_range_maxi
+ };
+ 
+ /*
+- * Test that if:
+- * - we have several subsequent calls to clk_set_rate_range()
+- * - and we have a round_rate ops that always return the minimum
+- *   frequency allowed;
++ * Test that if we have several subsequent calls to
++ * clk_set_rate_range(), the core will reevaluate whether a new rate is
++ * needed each and every time.
+  *
+- * The clock will run at the maximum of all minimum boundaries
+- * requested, even if those boundaries aren't there anymore.
+-*/
++ * With clk_dummy_minimize_rate_ops, this means that the the rate will
++ * trail along the minimum as it evolves.
++ */
+ static void clk_range_test_set_range_rate_minimized(struct kunit *test)
+ {
+ 	struct clk_dummy_context *ctx = test->priv;
+@@ -720,19 +716,17 @@ static void clk_range_test_set_range_rat
+ 
+ 	rate = clk_get_rate(clk);
+ 	KUNIT_ASSERT_GT(test, rate, 0);
+-	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
+ }
+ 
+ /*
+- * Test that if:
+- * - we have several subsequent calls to clk_set_rate_range(), across
+- *   multiple users;
+- * - and we have a round_rate ops that always return the minimum
+- *   frequency allowed;
++ * Test that if we have several subsequent calls to
++ * clk_set_rate_range(), across multiple users, the core will reevaluate
++ * whether a new rate is needed each and every time.
+  *
+- * The clock will run at the maximum of all minimum boundaries
+- * requested, even if those boundaries aren't there anymore.
+-*/
++ * With clk_dummy_minimize_rate_ops, this means that the the rate will
++ * trail along the minimum as it evolves.
++ */
+ static void clk_range_test_multiple_set_range_rate_minimized(struct kunit *test)
+ {
+ 	struct clk_dummy_context *ctx = test->priv;
+@@ -773,7 +767,7 @@ static void clk_range_test_multiple_set_
+ 
+ 	rate = clk_get_rate(clk);
+ 	KUNIT_ASSERT_GT(test, rate, 0);
+-	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
+ 
+ 	clk_put(user2);
+ 	clk_put(user1);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0835-clk-Add-clk_drop_range.patch b/target/linux/bcm27xx/patches-5.15/950-0835-clk-Add-clk_drop_range.patch
new file mode 100644
index 0000000000..ce3831d3f9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0835-clk-Add-clk_drop_range.patch
@@ -0,0 +1,57 @@
+From 6e08e0fa4ba16546fdbb2cdcc4ee6483bd0a6956 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 17 Jan 2022 16:43:52 +0100
+Subject: [PATCH] clk: Add clk_drop_range
+
+In order to reset the range on a clock, we need to call
+clk_set_rate_range with a minimum of 0 and a maximum of ULONG_MAX. Since
+it's fairly inconvenient, let's introduce a clk_drop_range() function
+that will do just this.
+
+Suggested-by: Stephen Boyd <sboyd@kernel.org>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c |  4 ++--
+ include/linux/clk.h    | 11 +++++++++++
+ 2 files changed, 13 insertions(+), 2 deletions(-)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -645,7 +645,7 @@ static void clk_range_test_multiple_set_
+ 	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
+ 
+ 	KUNIT_ASSERT_EQ(test,
+-			clk_set_rate_range(user2, 0, ULONG_MAX),
++			clk_drop_range(user2),
+ 			0);
+ 
+ 	rate = clk_get_rate(clk);
+@@ -762,7 +762,7 @@ static void clk_range_test_multiple_set_
+ 	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
+ 
+ 	KUNIT_ASSERT_EQ(test,
+-			clk_set_rate_range(user2, 0, ULONG_MAX),
++			clk_drop_range(user2),
+ 			0);
+ 
+ 	rate = clk_get_rate(clk);
+--- a/include/linux/clk.h
++++ b/include/linux/clk.h
+@@ -987,6 +987,17 @@ static inline void clk_bulk_disable_unpr
+ }
+ 
+ /**
++ * clk_drop_range - Reset any range set on that clock
++ * @clk: clock source
++ *
++ * Returns success (0) or negative errno.
++ */
++static inline int clk_drop_range(struct clk *clk)
++{
++	return clk_set_rate_range(clk, 0, ULONG_MAX);
++}
++
++/**
+  * clk_get_optional - lookup and obtain a reference to an optional clock
+  *		      producer.
+  * @dev: device for clock "consumer"
diff --git a/target/linux/bcm27xx/patches-5.15/950-0836-clk-test-Test-clk_set_rate_range-on-orphan-mux.patch b/target/linux/bcm27xx/patches-5.15/950-0836-clk-test-Test-clk_set_rate_range-on-orphan-mux.patch
new file mode 100644
index 0000000000..b6ca144378
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0836-clk-test-Test-clk_set_rate_range-on-orphan-mux.patch
@@ -0,0 +1,158 @@
+From e22b0f50781bc8507c1e3b8f775ac69d406bd155 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 25 Mar 2022 11:27:28 +0100
+Subject: [PATCH] clk: test: Test clk_set_rate_range on orphan mux
+
+A bug recently affected the Tegra30 where calling clk_set_rate_range()
+on a clock would make it change its rate to the minimum.
+
+This was due to the clock in question being a mux that was orphan at
+registration, which lead to the clk_core req_rate being 0, and the
+clk_set_rate_range() function then calling clk_set_rate() with req_rate,
+effectively making that clock running at the minimum rate allowed, even
+though the initial rate was within that range.
+
+Make a test suite to create a mux initially orphan, and then make sure
+that if our clock rate was initially within a given range, then
+enforcing that range won't affect it.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 105 +++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 105 insertions(+)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -72,6 +72,19 @@ static int clk_dummy_set_rate(struct clk
+ 	return 0;
+ }
+ 
++static int clk_dummy_single_set_parent(struct clk_hw *hw, u8 index)
++{
++	if (index >= clk_hw_get_num_parents(hw))
++		return -EINVAL;
++
++	return 0;
++}
++
++static u8 clk_dummy_single_get_parent(struct clk_hw *hw)
++{
++	return 0;
++}
++
+ static const struct clk_ops clk_dummy_rate_ops = {
+ 	.recalc_rate = clk_dummy_recalc_rate,
+ 	.determine_rate = clk_dummy_determine_rate,
+@@ -90,6 +103,11 @@ static const struct clk_ops clk_dummy_mi
+ 	.set_rate = clk_dummy_set_rate,
+ };
+ 
++static const struct clk_ops clk_dummy_single_parent_ops = {
++	.set_parent = clk_dummy_single_set_parent,
++	.get_parent = clk_dummy_single_get_parent,
++};
++
+ static int clk_test_init_with_ops(struct kunit *test, const struct clk_ops *ops)
+ {
+ 	struct clk_dummy_context *ctx;
+@@ -239,6 +257,92 @@ static struct kunit_suite clk_test_suite
+ 	.test_cases = clk_test_cases,
+ };
+ 
++struct clk_single_parent_ctx {
++	struct clk_dummy_context parent_ctx;
++	struct clk_hw hw;
++};
++
++static int clk_orphan_transparent_single_parent_mux_test_init(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx;
++	struct clk_init_data init = { };
++	const char *parents[] = { "orphan_parent" };
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	test->priv = ctx;
++
++	init.name = "test_orphan_dummy_parent";
++	init.ops = &clk_dummy_single_parent_ops;
++	init.parent_names = parents;
++	init.num_parents = ARRAY_SIZE(parents);
++	init.flags = CLK_SET_RATE_PARENT;
++	ctx->hw.init = &init;
++
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	memset(&init, 0, sizeof(init));
++	init.name = "orphan_parent";
++	init.ops = &clk_dummy_rate_ops;
++	ctx->parent_ctx.hw.init = &init;
++	ctx->parent_ctx.rate = DUMMY_CLOCK_INIT_RATE;
++
++	ret = clk_hw_register(NULL, &ctx->parent_ctx.hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++static void clk_orphan_transparent_single_parent_mux_test_exit(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++
++	clk_hw_unregister(&ctx->hw);
++	clk_hw_unregister(&ctx->parent_ctx.hw);
++}
++
++/*
++ * Test that a mux-only clock, with an initial rate within a range,
++ * will still have the same rate after the range has been enforced.
++ */
++static void clk_test_orphan_transparent_parent_mux_set_range(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate, new_rate;
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   ctx->parent_ctx.rate - 1000,
++					   ctx->parent_ctx.rate + 1000),
++			0);
++
++	new_rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, new_rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, new_rate);
++}
++
++static struct kunit_case clk_orphan_transparent_single_parent_mux_test_cases[] = {
++	KUNIT_CASE(clk_test_orphan_transparent_parent_mux_set_range),
++	{}
++};
++
++static struct kunit_suite clk_orphan_transparent_single_parent_test_suite = {
++	.name = "clk-orphan-transparent-single-parent-test",
++	.init = clk_orphan_transparent_single_parent_mux_test_init,
++	.exit = clk_orphan_transparent_single_parent_mux_test_exit,
++	.test_cases = clk_orphan_transparent_single_parent_mux_test_cases,
++};
++
+ /*
+  * Test that clk_set_rate_range won't return an error for a valid range
+  * and that it will make sure the rate of the clock is within the
+@@ -788,6 +892,7 @@ static struct kunit_suite clk_range_mini
+ 
+ kunit_test_suites(
+ 	&clk_test_suite,
++	&clk_orphan_transparent_single_parent_test_suite,
+ 	&clk_range_test_suite,
+ 	&clk_range_maximize_test_suite,
+ 	&clk_range_minimize_test_suite
diff --git a/target/linux/bcm27xx/patches-5.15/950-0837-clk-Drop-the-rate-range-on-clk_put.patch b/target/linux/bcm27xx/patches-5.15/950-0837-clk-Drop-the-rate-range-on-clk_put.patch
new file mode 100644
index 0000000000..1da8076078
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0837-clk-Drop-the-rate-range-on-clk_put.patch
@@ -0,0 +1,238 @@
+From 06f02ffffc5aa432e119d094f019ba97ccd8bb89 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 25 Mar 2022 17:11:44 +0100
+Subject: [PATCH] clk: Drop the rate range on clk_put()
+
+When clk_put() is called we don't make another clk_set_rate() call to
+re-evaluate the rate boundaries. This is unlike clk_set_rate_range()
+that evaluates the rate again each time it is called.
+
+However, clk_put() is essentially equivalent to clk_set_rate_range()
+since after clk_put() completes the consumer's boundaries shouldn't be
+enforced anymore.
+
+Let's add a call to clk_set_rate_range() in clk_put() to make sure those
+rate boundaries are dropped and the clock provider drivers can react. In
+order to be as non-intrusive as possible, we'll just make that call if
+the clock had non-default boundaries.
+
+Also add a few tests to make sure this case is covered.
+
+Fixes: c80ac50cbb37 ("clk: Always set the rate on clk_set_range_rate")
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c      |  45 +++++++++++------
+ drivers/clk/clk_test.c | 108 +++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 139 insertions(+), 14 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -2331,19 +2331,15 @@ int clk_set_rate_exclusive(struct clk *c
+ }
+ EXPORT_SYMBOL_GPL(clk_set_rate_exclusive);
+ 
+-/**
+- * clk_set_rate_range - set a rate range for a clock source
+- * @clk: clock source
+- * @min: desired minimum clock rate in Hz, inclusive
+- * @max: desired maximum clock rate in Hz, inclusive
+- *
+- * Returns success (0) or negative errno.
+- */
+-int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)
++static int clk_set_rate_range_nolock(struct clk *clk,
++				     unsigned long min,
++				     unsigned long max)
+ {
+ 	int ret = 0;
+ 	unsigned long old_min, old_max, rate;
+ 
++	lockdep_assert_held(&prepare_lock);
++
+ 	if (!clk)
+ 		return 0;
+ 
+@@ -2356,8 +2352,6 @@ int clk_set_rate_range(struct clk *clk,
+ 		return -EINVAL;
+ 	}
+ 
+-	clk_prepare_lock();
+-
+ 	if (clk->exclusive_count)
+ 		clk_core_rate_unprotect(clk->core);
+ 
+@@ -2401,6 +2395,28 @@ out:
+ 	if (clk->exclusive_count)
+ 		clk_core_rate_protect(clk->core);
+ 
++	return ret;
++}
++
++/**
++ * clk_set_rate_range - set a rate range for a clock source
++ * @clk: clock source
++ * @min: desired minimum clock rate in Hz, inclusive
++ * @max: desired maximum clock rate in Hz, inclusive
++ *
++ * Return: 0 for success or negative errno on failure.
++ */
++int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)
++{
++	int ret;
++
++	if (!clk)
++		return 0;
++
++	clk_prepare_lock();
++
++	ret = clk_set_rate_range_nolock(clk, min, max);
++
+ 	clk_prepare_unlock();
+ 
+ 	return ret;
+@@ -4360,9 +4376,10 @@ void __clk_put(struct clk *clk)
+ 	}
+ 
+ 	hlist_del(&clk->clks_node);
+-	if (clk->min_rate > clk->core->req_rate ||
+-	    clk->max_rate < clk->core->req_rate)
+-		clk_core_set_rate_nolock(clk->core, clk->core->req_rate);
++
++	/* If we had any boundaries on that clock, let's drop them. */
++	if (clk->min_rate > 0 || clk->max_rate < ULONG_MAX)
++		clk_set_rate_range_nolock(clk, 0, ULONG_MAX);
+ 
+ 	owner = clk->core->owner;
+ 	kref_put(&clk->core->ref, __clk_release);
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -760,9 +760,65 @@ static void clk_range_test_multiple_set_
+ 	clk_put(user1);
+ }
+ 
++/*
++ * Test that if we have several subsequent calls to
++ * clk_set_rate_range(), across multiple users, the core will reevaluate
++ * whether a new rate is needed, including when a user drop its clock.
++ *
++ * With clk_dummy_maximize_rate_ops, this means that the rate will
++ * trail along the maximum as it evolves.
++ */
++static void clk_range_test_multiple_set_range_rate_put_maximized(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *user1, *user2;
++	unsigned long rate;
++
++	user1 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user1);
++
++	user2 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate(clk, DUMMY_CLOCK_RATE_2 + 1000),
++			0);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user1,
++					   0,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user2,
++					   0,
++					   DUMMY_CLOCK_RATE_1),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	clk_put(user2);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++
++	clk_put(user1);
++}
++
+ static struct kunit_case clk_range_maximize_test_cases[] = {
+ 	KUNIT_CASE(clk_range_test_set_range_rate_maximized),
+ 	KUNIT_CASE(clk_range_test_multiple_set_range_rate_maximized),
++	KUNIT_CASE(clk_range_test_multiple_set_range_rate_put_maximized),
+ 	{}
+ };
+ 
+@@ -877,9 +933,61 @@ static void clk_range_test_multiple_set_
+ 	clk_put(user1);
+ }
+ 
++/*
++ * Test that if we have several subsequent calls to
++ * clk_set_rate_range(), across multiple users, the core will reevaluate
++ * whether a new rate is needed, including when a user drop its clock.
++ *
++ * With clk_dummy_minimize_rate_ops, this means that the rate will
++ * trail along the minimum as it evolves.
++ */
++static void clk_range_test_multiple_set_range_rate_put_minimized(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *user1, *user2;
++	unsigned long rate;
++
++	user1 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user1);
++
++	user2 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user2);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user1,
++					   DUMMY_CLOCK_RATE_1,
++					   ULONG_MAX),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(user2,
++					   DUMMY_CLOCK_RATE_2,
++					   ULONG_MAX),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2);
++
++	clk_put(user2);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	clk_put(user1);
++}
++
+ static struct kunit_case clk_range_minimize_test_cases[] = {
+ 	KUNIT_CASE(clk_range_test_set_range_rate_minimized),
+ 	KUNIT_CASE(clk_range_test_multiple_set_range_rate_minimized),
++	KUNIT_CASE(clk_range_test_multiple_set_range_rate_put_minimized),
+ 	{}
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0838-clk-tests-Add-test-suites-description.patch b/target/linux/bcm27xx/patches-5.15/950-0838-clk-tests-Add-test-suites-description.patch
new file mode 100644
index 0000000000..c5e1256143
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0838-clk-tests-Add-test-suites-description.patch
@@ -0,0 +1,92 @@
+From 3f935fd9776cace286d40ab37726f80c8d2ed8b1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 1 Apr 2022 17:08:26 +0200
+Subject: [PATCH] clk: tests: Add test suites description
+
+We start to have a few test suites, and we'll add more, so it will get
+pretty confusing to figure out what is supposed to be tested in what
+suite.
+
+Let's add some comments to explain what setup they create, and what we
+should be testing in every suite.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 36 ++++++++++++++++++++++++++++++++++++
+ 1 file changed, 36 insertions(+)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -250,6 +250,11 @@ static struct kunit_case clk_test_cases[
+ 	{}
+ };
+ 
++/*
++ * Test suite for a basic rate clock, without any parent.
++ *
++ * These tests are supposed to exercise the rate API with simple scenarios
++ */
+ static struct kunit_suite clk_test_suite = {
+ 	.name = "clk-test",
+ 	.init = clk_test_init,
+@@ -336,6 +341,14 @@ static struct kunit_case clk_orphan_tran
+ 	{}
+ };
+ 
++/*
++ * Test suite for a basic mux clock with one parent. The parent is
++ * registered after its child. The clock will thus be orphan when
++ * registered, but will no longer be when the tests run.
++ *
++ * These tests are supposed to make sure a clock that used to be orphan
++ * has a sane, consistent, behaviour.
++ */
+ static struct kunit_suite clk_orphan_transparent_single_parent_test_suite = {
+ 	.name = "clk-orphan-transparent-single-parent-test",
+ 	.init = clk_orphan_transparent_single_parent_mux_test_init,
+@@ -645,6 +658,13 @@ static struct kunit_case clk_range_test_
+ 	{}
+ };
+ 
++/*
++ * Test suite for a basic rate clock, without any parent.
++ *
++ * These tests are supposed to exercise the rate range API
++ * (clk_set_rate_range, clk_set_min_rate, clk_set_max_rate,
++ * clk_drop_range).
++ */
+ static struct kunit_suite clk_range_test_suite = {
+ 	.name = "clk-range-test",
+ 	.init = clk_test_init,
+@@ -822,6 +842,14 @@ static struct kunit_case clk_range_maxim
+ 	{}
+ };
+ 
++/*
++ * Test suite for a basic rate clock, without any parent.
++ *
++ * These tests are supposed to exercise the rate range API
++ * (clk_set_rate_range, clk_set_min_rate, clk_set_max_rate,
++ * clk_drop_range), with a driver that will always try to run at the
++ * highest possible rate.
++ */
+ static struct kunit_suite clk_range_maximize_test_suite = {
+ 	.name = "clk-range-maximize-test",
+ 	.init = clk_maximize_test_init,
+@@ -991,6 +1019,14 @@ static struct kunit_case clk_range_minim
+ 	{}
+ };
+ 
++/*
++ * Test suite for a basic rate clock, without any parent.
++ *
++ * These tests are supposed to exercise the rate range API
++ * (clk_set_rate_range, clk_set_min_rate, clk_set_max_rate,
++ * clk_drop_range), with a driver that will always try to run at the
++ * lowest possible rate.
++ */
+ static struct kunit_suite clk_range_minimize_test_suite = {
+ 	.name = "clk-range-minimize-test",
+ 	.init = clk_minimize_test_init,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0839-clk-tests-Add-reference-to-the-orphan-mux-bug-report.patch b/target/linux/bcm27xx/patches-5.15/950-0839-clk-tests-Add-reference-to-the-orphan-mux-bug-report.patch
new file mode 100644
index 0000000000..a7bd686603
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0839-clk-tests-Add-reference-to-the-orphan-mux-bug-report.patch
@@ -0,0 +1,28 @@
+From 88e2dd0bc0a8db759a4489e73d66cb2bbf513ae6 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 1 Apr 2022 14:53:49 +0200
+Subject: [PATCH] clk: tests: Add reference to the orphan mux bug
+ report
+
+Some more context might be useful for unit-tests covering a previously
+reported bug, so let's add a link to the discussion for that bug.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -314,6 +314,9 @@ static void clk_orphan_transparent_singl
+ /*
+  * Test that a mux-only clock, with an initial rate within a range,
+  * will still have the same rate after the range has been enforced.
++ *
++ * See:
++ * https://lore.kernel.org/linux-clk/7720158d-10a7-a17b-73a4-a8615c9c6d5c@collabora.com/
+  */
+ static void clk_test_orphan_transparent_parent_mux_set_range(struct kunit *test)
+ {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0840-clk-tests-Add-tests-for-uncached-clock.patch b/target/linux/bcm27xx/patches-5.15/950-0840-clk-tests-Add-tests-for-uncached-clock.patch
new file mode 100644
index 0000000000..3db0743490
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0840-clk-tests-Add-tests-for-uncached-clock.patch
@@ -0,0 +1,124 @@
+From b28798f3ae1a63169dd57e5b5cb55848172aa4c6 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 8 Apr 2022 09:54:39 +0200
+Subject: [PATCH] clk: tests: Add tests for uncached clock
+
+The clock framework supports clocks that can have their rate changed
+without the kernel knowing about it using the CLK_GET_RATE_NOCACHE flag.
+
+As its name suggests, this flag turns off the rate caching in the clock
+framework, reading out the rate from the hardware any time we need to
+read it.
+
+Let's add a couple of tests to make sure it works as intended.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 88 +++++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 87 insertions(+), 1 deletion(-)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -262,6 +262,91 @@ static struct kunit_suite clk_test_suite
+ 	.test_cases = clk_test_cases,
+ };
+ 
++static int clk_uncached_test_init(struct kunit *test)
++{
++	struct clk_dummy_context *ctx;
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	test->priv = ctx;
++
++	ctx->rate = DUMMY_CLOCK_INIT_RATE;
++	ctx->hw.init = CLK_HW_INIT_NO_PARENT("test-clk",
++					     &clk_dummy_rate_ops,
++					     CLK_GET_RATE_NOCACHE);
++
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++/*
++ * Test that for an uncached clock, the clock framework doesn't cache
++ * the rate and clk_get_rate() will return the underlying clock rate
++ * even if it changed.
++ */
++static void clk_test_uncached_get_rate(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_INIT_RATE);
++
++	ctx->rate = DUMMY_CLOCK_RATE_1;
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++}
++
++/*
++ * Test that for an uncached clock, clk_set_rate_range() will work
++ * properly if the rate hasn't changed.
++ */
++static void clk_test_uncached_set_range(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
++}
++
++static struct kunit_case clk_uncached_test_cases[] = {
++	KUNIT_CASE(clk_test_uncached_get_rate),
++	KUNIT_CASE(clk_test_uncached_set_range),
++	{}
++};
++
++/*
++ * Test suite for a basic, uncached, rate clock, without any parent.
++ *
++ * These tests are supposed to exercise the rate API with simple scenarios
++ */
++static struct kunit_suite clk_uncached_test_suite = {
++	.name = "clk-uncached-test",
++	.init = clk_uncached_test_init,
++	.exit = clk_test_exit,
++	.test_cases = clk_uncached_test_cases,
++};
++
+ struct clk_single_parent_ctx {
+ 	struct clk_dummy_context parent_ctx;
+ 	struct clk_hw hw;
+@@ -1042,6 +1127,7 @@ kunit_test_suites(
+ 	&clk_orphan_transparent_single_parent_test_suite,
+ 	&clk_range_test_suite,
+ 	&clk_range_maximize_test_suite,
+-	&clk_range_minimize_test_suite
++	&clk_range_minimize_test_suite,
++	&clk_uncached_test_suite
+ );
+ MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0841-clk-tests-Add-tests-for-single-parent-mux.patch b/target/linux/bcm27xx/patches-5.15/950-0841-clk-tests-Add-tests-for-single-parent-mux.patch
new file mode 100644
index 0000000000..05c7ba3d2f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0841-clk-tests-Add-tests-for-single-parent-mux.patch
@@ -0,0 +1,234 @@
+From 2ef4d6383803ef0b5b4b1efa5b7577a7970f2669 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 7 Apr 2022 14:21:55 +0200
+Subject: [PATCH] clk: tests: Add tests for single parent mux
+
+We have a few tests for a mux with a single parent, testing the case
+where it used to be orphan.
+
+Let's leverage most of the code but register the clock properly to test
+a few trivial things.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 186 +++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 177 insertions(+), 9 deletions(-)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -352,6 +352,181 @@ struct clk_single_parent_ctx {
+ 	struct clk_hw hw;
+ };
+ 
++static int clk_single_parent_mux_test_init(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx;
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	test->priv = ctx;
++
++	ctx->parent_ctx.rate = DUMMY_CLOCK_INIT_RATE;
++	ctx->parent_ctx.hw.init =
++		CLK_HW_INIT_NO_PARENT("parent-clk",
++				      &clk_dummy_rate_ops,
++				      0);
++
++	ret = clk_hw_register(NULL, &ctx->parent_ctx.hw);
++	if (ret)
++		return ret;
++
++	ctx->hw.init = CLK_HW_INIT("test-clk", "parent-clk",
++				   &clk_dummy_single_parent_ops,
++				   CLK_SET_RATE_PARENT);
++
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++static void
++clk_single_parent_mux_test_exit(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++
++	clk_hw_unregister(&ctx->hw);
++	clk_hw_unregister(&ctx->parent_ctx.hw);
++}
++
++/*
++ * Test that for a clock with a single parent, clk_get_parent() actually
++ * returns the parent.
++ */
++static void
++clk_test_single_parent_mux_get_parent(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++
++	parent = clk_get_parent(clk);
++	KUNIT_EXPECT_TRUE(test, clk_is_match(parent, ctx->parent_ctx.hw.clk));
++}
++
++/*
++ * Test that for a clock that can't modify its rate and with a single
++ * parent, if we set disjoints range on the parent and then the child,
++ * the second will return an error.
++ *
++ * FIXME: clk_set_rate_range() only considers the current clock when
++ * evaluating whether ranges are disjoints and not the upstream clocks
++ * ranges.
++ */
++static void
++clk_test_single_parent_mux_set_range_disjoint_child_last(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	int ret;
++
++	kunit_skip(test, "This needs to be fixed in the core.");
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(parent, 1000, 2000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk, 3000, 4000);
++	KUNIT_EXPECT_LT(test, ret, 0);
++}
++
++/*
++ * Test that for a clock that can't modify its rate and with a single
++ * parent, if we set disjoints range on the child and then the parent,
++ * the second will return an error.
++ *
++ * FIXME: clk_set_rate_range() only considers the current clock when
++ * evaluating whether ranges are disjoints and not the downstream clocks
++ * ranges.
++ */
++static void
++clk_test_single_parent_mux_set_range_disjoint_parent_last(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	int ret;
++
++	kunit_skip(test, "This needs to be fixed in the core.");
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(clk, 1000, 2000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(parent, 3000, 4000);
++	KUNIT_EXPECT_LT(test, ret, 0);
++}
++
++/*
++ * Test that for a clock that can't modify its rate and with a single
++ * parent, if we set a range on the parent and a more restrictive one on
++ * the child, and then call clk_round_rate(), the boundaries of the
++ * two clocks are taken into account.
++ */
++static void
++clk_test_single_parent_mux_set_range_round_rate_child_smaller(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	unsigned long rate;
++	int ret;
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(parent, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1 + 1000, DUMMY_CLOCK_RATE_2 - 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_2 + 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
++}
++
++static struct kunit_case clk_single_parent_mux_test_cases[] = {
++	KUNIT_CASE(clk_test_single_parent_mux_get_parent),
++	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_child_last),
++	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_parent_last),
++	KUNIT_CASE(clk_test_single_parent_mux_set_range_round_rate_child_smaller),
++	{}
++};
++
++/*
++ * Test suite for a basic mux clock with one parent, with
++ * CLK_SET_RATE_PARENT on the child.
++ *
++ * These tests are supposed to exercise the consumer API and check that
++ * the state of the child and parent are sane and consistent.
++ */
++static struct kunit_suite
++clk_single_parent_mux_test_suite = {
++	.name = "clk-single-parent-mux-test",
++	.init = clk_single_parent_mux_test_init,
++	.exit = clk_single_parent_mux_test_exit,
++	.test_cases = clk_single_parent_mux_test_cases,
++};
++
+ static int clk_orphan_transparent_single_parent_mux_test_init(struct kunit *test)
+ {
+ 	struct clk_single_parent_ctx *ctx;
+@@ -388,14 +563,6 @@ static int clk_orphan_transparent_single
+ 	return 0;
+ }
+ 
+-static void clk_orphan_transparent_single_parent_mux_test_exit(struct kunit *test)
+-{
+-	struct clk_single_parent_ctx *ctx = test->priv;
+-
+-	clk_hw_unregister(&ctx->hw);
+-	clk_hw_unregister(&ctx->parent_ctx.hw);
+-}
+-
+ /*
+  * Test that a mux-only clock, with an initial rate within a range,
+  * will still have the same rate after the range has been enforced.
+@@ -440,7 +607,7 @@ static struct kunit_case clk_orphan_tran
+ static struct kunit_suite clk_orphan_transparent_single_parent_test_suite = {
+ 	.name = "clk-orphan-transparent-single-parent-test",
+ 	.init = clk_orphan_transparent_single_parent_mux_test_init,
+-	.exit = clk_orphan_transparent_single_parent_mux_test_exit,
++	.exit = clk_single_parent_mux_test_exit,
+ 	.test_cases = clk_orphan_transparent_single_parent_mux_test_cases,
+ };
+ 
+@@ -1128,6 +1295,7 @@ kunit_test_suites(
+ 	&clk_range_test_suite,
+ 	&clk_range_maximize_test_suite,
+ 	&clk_range_minimize_test_suite,
++	&clk_single_parent_mux_test_suite,
+ 	&clk_uncached_test_suite
+ );
+ MODULE_LICENSE("GPL v2");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0842-clk-tests-Add-tests-for-mux-with-multiple-parents.patch b/target/linux/bcm27xx/patches-5.15/950-0842-clk-tests-Add-tests-for-mux-with-multiple-parents.patch
new file mode 100644
index 0000000000..46a424db80
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0842-clk-tests-Add-tests-for-mux-with-multiple-parents.patch
@@ -0,0 +1,161 @@
+From c5511ae59ece75d80acdaf37ebd08aca51f80188 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 7 Apr 2022 14:58:34 +0200
+Subject: [PATCH] clk: tests: Add tests for mux with multiple parents
+
+We'll need to test a few corner cases that occur when we have a mux
+clock whose default parent is missing.
+
+For now, let's create the context structure and the trivial ops, along
+with a test suite that just tests trivial things for now, without
+considering the orphan case.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 119 +++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 119 insertions(+)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -108,6 +108,39 @@ static const struct clk_ops clk_dummy_si
+ 	.get_parent = clk_dummy_single_get_parent,
+ };
+ 
++struct clk_multiple_parent_ctx {
++	struct clk_dummy_context parents_ctx[2];
++	struct clk_hw hw;
++	u8 current_parent;
++};
++
++static int clk_multiple_parents_mux_set_parent(struct clk_hw *hw, u8 index)
++{
++	struct clk_multiple_parent_ctx *ctx =
++		container_of(hw, struct clk_multiple_parent_ctx, hw);
++
++	if (index >= clk_hw_get_num_parents(hw))
++		return -EINVAL;
++
++	ctx->current_parent = index;
++
++	return 0;
++}
++
++static u8 clk_multiple_parents_mux_get_parent(struct clk_hw *hw)
++{
++	struct clk_multiple_parent_ctx *ctx =
++		container_of(hw, struct clk_multiple_parent_ctx, hw);
++
++	return ctx->current_parent;
++}
++
++static const struct clk_ops clk_multiple_parents_mux_ops = {
++	.get_parent = clk_multiple_parents_mux_get_parent,
++	.set_parent = clk_multiple_parents_mux_set_parent,
++	.determine_rate = __clk_mux_determine_rate_closest,
++};
++
+ static int clk_test_init_with_ops(struct kunit *test, const struct clk_ops *ops)
+ {
+ 	struct clk_dummy_context *ctx;
+@@ -347,6 +380,91 @@ static struct kunit_suite clk_uncached_t
+ 	.test_cases = clk_uncached_test_cases,
+ };
+ 
++static int
++clk_multiple_parents_mux_test_init(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx;
++	const char *parents[2] = { "parent-0", "parent-1"};
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	test->priv = ctx;
++
++	ctx->parents_ctx[0].hw.init = CLK_HW_INIT_NO_PARENT("parent-0",
++							    &clk_dummy_rate_ops,
++							    0);
++	ctx->parents_ctx[0].rate = DUMMY_CLOCK_RATE_1;
++	ret = clk_hw_register(NULL, &ctx->parents_ctx[0].hw);
++	if (ret)
++		return ret;
++
++	ctx->parents_ctx[1].hw.init = CLK_HW_INIT_NO_PARENT("parent-1",
++							    &clk_dummy_rate_ops,
++							    0);
++	ctx->parents_ctx[1].rate = DUMMY_CLOCK_RATE_2;
++	ret = clk_hw_register(NULL, &ctx->parents_ctx[1].hw);
++	if (ret)
++		return ret;
++
++	ctx->current_parent = 0;
++	ctx->hw.init = CLK_HW_INIT_PARENTS("test-mux", parents,
++					   &clk_multiple_parents_mux_ops,
++					   CLK_SET_RATE_PARENT);
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++static void
++clk_multiple_parents_mux_test_exit(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++
++	clk_hw_unregister(&ctx->hw);
++	clk_hw_unregister(&ctx->parents_ctx[0].hw);
++	clk_hw_unregister(&ctx->parents_ctx[1].hw);
++}
++
++/*
++ * Test that for a clock with multiple parents, clk_get_parent()
++ * actually returns the current one.
++ */
++static void
++clk_test_multiple_parents_mux_get_parent(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++
++	parent = clk_get_parent(clk);
++	KUNIT_EXPECT_TRUE(test, clk_is_match(parent, ctx->parents_ctx[0].hw.clk));
++}
++
++static struct kunit_case clk_multiple_parents_mux_test_cases[] = {
++	KUNIT_CASE(clk_test_multiple_parents_mux_get_parent),
++	{}
++};
++
++/*
++ * Test suite for a basic mux clock with two parents, with
++ * CLK_SET_RATE_PARENT on the child.
++ *
++ * These tests are supposed to exercise the consumer API and check that
++ * the state of the child and parents are sane and consistent.
++ */
++static struct kunit_suite
++clk_multiple_parents_mux_test_suite = {
++	.name = "clk-multiple-parents-mux-test",
++	.init = clk_multiple_parents_mux_test_init,
++	.exit = clk_multiple_parents_mux_test_exit,
++	.test_cases = clk_multiple_parents_mux_test_cases,
++};
++
+ struct clk_single_parent_ctx {
+ 	struct clk_dummy_context parent_ctx;
+ 	struct clk_hw hw;
+@@ -1291,6 +1409,7 @@ static struct kunit_suite clk_range_mini
+ 
+ kunit_test_suites(
+ 	&clk_test_suite,
++	&clk_multiple_parents_mux_test_suite,
+ 	&clk_orphan_transparent_single_parent_test_suite,
+ 	&clk_range_test_suite,
+ 	&clk_range_maximize_test_suite,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0843-clk-tests-Add-some-tests-for-orphan-with-multiple-pa.patch b/target/linux/bcm27xx/patches-5.15/950-0843-clk-tests-Add-some-tests-for-orphan-with-multiple-pa.patch
new file mode 100644
index 0000000000..4f24f99cd4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0843-clk-tests-Add-some-tests-for-orphan-with-multiple-pa.patch
@@ -0,0 +1,210 @@
+From b50545c05484be6c9326377e03c69d165d3552f6 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 17:27:40 +0200
+Subject: [PATCH] clk: tests: Add some tests for orphan with multiple
+ parents
+
+Let's leverage the dummy mux with multiple parents we have to create a
+mux whose default parent will never be registered, and thus will always
+be orphan by default.
+
+We can then create some tests to make sure that the clock API behaves
+properly in such a case, and that the transition to a non-orphan clock
+when we change the parent is done properly.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 173 +++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 173 insertions(+)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -465,6 +465,178 @@ clk_multiple_parents_mux_test_suite = {
+ 	.test_cases = clk_multiple_parents_mux_test_cases,
+ };
+ 
++static int
++clk_orphan_transparent_multiple_parent_mux_test_init(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx;
++	const char *parents[2] = { "missing-parent", "proper-parent"};
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	test->priv = ctx;
++
++	ctx->parents_ctx[1].hw.init = CLK_HW_INIT_NO_PARENT("proper-parent",
++							    &clk_dummy_rate_ops,
++							    0);
++	ctx->parents_ctx[1].rate = DUMMY_CLOCK_INIT_RATE;
++	ret = clk_hw_register(NULL, &ctx->parents_ctx[1].hw);
++	if (ret)
++		return ret;
++
++	ctx->hw.init = CLK_HW_INIT_PARENTS("test-orphan-mux", parents,
++					   &clk_multiple_parents_mux_ops,
++					   CLK_SET_RATE_PARENT);
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++static void
++clk_orphan_transparent_multiple_parent_mux_test_exit(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++
++	clk_hw_unregister(&ctx->hw);
++	clk_hw_unregister(&ctx->parents_ctx[1].hw);
++}
++
++/*
++ * Test that, for a mux whose current parent hasn't been registered yet,
++ * calling clk_set_parent() to a valid parent will properly update the
++ * mux parent and its orphan status.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_parent(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent, *new_parent;
++	int ret;
++
++	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++
++	ret = clk_set_parent(clk, parent);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	new_parent = clk_get_parent(clk);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++	KUNIT_EXPECT_TRUE(test, clk_is_match(parent, new_parent));
++
++	clk_put(parent);
++}
++
++/*
++ * Test that, for a mux that started orphan but got switched to a valid
++ * parent, the rate of the mux and its new parent are consistent.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_parent_get_rate(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	unsigned long parent_rate, rate;
++	int ret;
++
++	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++
++	parent_rate = clk_get_rate(parent);
++	KUNIT_ASSERT_GT(test, parent_rate, 0);
++
++	ret = clk_set_parent(clk, parent);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, parent_rate, rate);
++}
++
++/*
++ * Test that, for a mux that started orphan but got switched to a valid
++ * parent, calling clk_set_rate_range() will affect the parent state if
++ * its rate is out of range.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_modified(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk, *parent;
++	unsigned long rate;
++	int ret;
++
++	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++
++	ret = clk_set_parent(clk, parent);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
++
++	clk_put(parent);
++}
++
++/*
++ * Test that, for a mux whose current parent hasn't been registered yet,
++ * calling clk_set_rate_range() will succeed, and will be taken into
++ * account when rounding a rate.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_range_round_rate(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++	int ret;
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
++}
++
++static struct kunit_case clk_orphan_transparent_multiple_parent_mux_test_cases[] = {
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_get_rate),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_modified),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_range_round_rate),
++	{}
++};
++
++/*
++ * Test suite for a basic mux clock with two parents. The default parent
++ * isn't registered, only the second parent is. By default, the clock
++ * will thus be orphan.
++ *
++ * These tests are supposed to exercise the behaviour of the consumer
++ * API when dealing with an orphan clock, and how we deal with the
++ * transition to a valid parent.
++ */
++static struct kunit_suite clk_orphan_transparent_multiple_parent_mux_test_suite = {
++	.name = "clk-orphan-transparent-multiple-parent-mux-test",
++	.init = clk_orphan_transparent_multiple_parent_mux_test_init,
++	.exit = clk_orphan_transparent_multiple_parent_mux_test_exit,
++	.test_cases = clk_orphan_transparent_multiple_parent_mux_test_cases,
++};
++
+ struct clk_single_parent_ctx {
+ 	struct clk_dummy_context parent_ctx;
+ 	struct clk_hw hw;
+@@ -1410,6 +1582,7 @@ static struct kunit_suite clk_range_mini
+ kunit_test_suites(
+ 	&clk_test_suite,
+ 	&clk_multiple_parents_mux_test_suite,
++	&clk_orphan_transparent_multiple_parent_mux_test_suite,
+ 	&clk_orphan_transparent_single_parent_test_suite,
+ 	&clk_range_test_suite,
+ 	&clk_range_maximize_test_suite,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0844-clk-Take-into-account-uncached-clocks-in-clk_set_rat.patch b/target/linux/bcm27xx/patches-5.15/950-0844-clk-Take-into-account-uncached-clocks-in-clk_set_rat.patch
new file mode 100644
index 0000000000..b5ae00957a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0844-clk-Take-into-account-uncached-clocks-in-clk_set_rat.patch
@@ -0,0 +1,84 @@
+From 4ec4cfbf63a697a5b1c82b400d28afd0347d555a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 8 Apr 2022 10:06:11 +0200
+Subject: [PATCH] clk: Take into account uncached clocks in
+ clk_set_rate_range()
+
+clk_set_rate_range() will use the last requested rate for the clock when
+it calls into the driver set_rate hook.
+
+However, if CLK_GET_RATE_NOCACHE is set on that clock, the last
+requested rate might not be matching the current rate of the clock. In
+such a case, let's read out the rate from the hardware and use that in
+our set_rate instead.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c      |  6 +++++-
+ drivers/clk/clk_test.c | 28 ++++++++++++++++++++++++++++
+ 2 files changed, 33 insertions(+), 1 deletion(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -2366,6 +2366,10 @@ static int clk_set_rate_range_nolock(str
+ 		goto out;
+ 	}
+ 
++	rate = clk->core->req_rate;
++	if (clk->core->flags & CLK_GET_RATE_NOCACHE)
++		rate = clk_core_get_rate_recalc(clk->core);
++
+ 	/*
+ 	 * Since the boundaries have been changed, let's give the
+ 	 * opportunity to the provider to adjust the clock rate based on
+@@ -2383,7 +2387,7 @@ static int clk_set_rate_range_nolock(str
+ 	 * - the determine_rate() callback does not really check for
+ 	 *   this corner case when determining the rate
+ 	 */
+-	rate = clamp(clk->core->req_rate, min, max);
++	rate = clamp(rate, min, max);
+ 	ret = clk_core_set_rate_nolock(clk->core, rate);
+ 	if (ret) {
+ 		/* rollback the changes */
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -362,9 +362,37 @@ static void clk_test_uncached_set_range(
+ 	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
+ }
+ 
++/*
++ * Test that for an uncached clock, clk_set_rate_range() will work
++ * properly if the rate has changed in hardware.
++ *
++ * In this case, it means that if the rate wasn't initially in the range
++ * we're trying to set, but got changed at some point into the range
++ * without the kernel knowing about it, its rate shouldn't be affected.
++ */
++static void clk_test_uncached_updated_rate_set_range(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	ctx->rate = DUMMY_CLOCK_RATE_1 + 1000;
++	KUNIT_ASSERT_EQ(test,
++			clk_set_rate_range(clk,
++					   DUMMY_CLOCK_RATE_1,
++					   DUMMY_CLOCK_RATE_2),
++			0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++}
++
+ static struct kunit_case clk_uncached_test_cases[] = {
+ 	KUNIT_CASE(clk_test_uncached_get_rate),
+ 	KUNIT_CASE(clk_test_uncached_set_range),
++	KUNIT_CASE(clk_test_uncached_updated_rate_set_range),
+ 	{}
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0845-clk-Fix-clk_get_parent-documentation.patch b/target/linux/bcm27xx/patches-5.15/950-0845-clk-Fix-clk_get_parent-documentation.patch
new file mode 100644
index 0000000000..9b82144216
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0845-clk-Fix-clk_get_parent-documentation.patch
@@ -0,0 +1,69 @@
+From daba7e69a412a6b55b77818904ae53e2a9a6d91c Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 1 Apr 2022 11:09:29 +0200
+Subject: [PATCH] clk: Fix clk_get_parent() documentation
+
+The clk_get_parent() documentation in the header states that it will
+return a valid pointer, or an error pointer on failure.
+
+However, the documentation in the source file, and the code itself, will
+return also return NULL if there isn't any parent for that clock. Let's
+mention it.
+
+An orphan clock should return NULL too, so let's add a test for it.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 17 +++++++++++++++++
+ include/linux/clk.h    |  5 +++--
+ 2 files changed, 20 insertions(+), 2 deletions(-)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -534,6 +534,22 @@ clk_orphan_transparent_multiple_parent_m
+ 
+ /*
+  * Test that, for a mux whose current parent hasn't been registered yet,
++ * clk_get_parent() will return NULL.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_get_parent(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++
++	parent = clk_get_parent(clk);
++	KUNIT_EXPECT_PTR_EQ(test, parent, NULL);
++}
++
++/*
++ * Test that, for a mux whose current parent hasn't been registered yet,
+  * calling clk_set_parent() to a valid parent will properly update the
+  * mux parent and its orphan status.
+  */
+@@ -642,6 +658,7 @@ clk_test_orphan_transparent_multiple_par
+ }
+ 
+ static struct kunit_case clk_orphan_transparent_multiple_parent_mux_test_cases[] = {
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_get_parent),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_get_rate),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_modified),
+--- a/include/linux/clk.h
++++ b/include/linux/clk.h
+@@ -744,8 +744,9 @@ int clk_set_parent(struct clk *clk, stru
+  * clk_get_parent - get the parent clock source for this clock
+  * @clk: clock source
+  *
+- * Returns struct clk corresponding to parent clock source, or
+- * valid IS_ERR() condition containing errno.
++ * Returns struct clk corresponding to parent clock source, a NULL
++ * pointer if it doesn't have a parent, or a valid IS_ERR() condition
++ * containing errno.
+  */
+ struct clk *clk_get_parent(struct clk *clk);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0846-clk-Set-req_rate-on-reparenting.patch b/target/linux/bcm27xx/patches-5.15/950-0846-clk-Set-req_rate-on-reparenting.patch
new file mode 100644
index 0000000000..32786521a9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0846-clk-Set-req_rate-on-reparenting.patch
@@ -0,0 +1,334 @@
+From 36595ef49aac284d386e1f9e8ac0910451ef40d6 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 1 Apr 2022 15:26:46 +0200
+Subject: [PATCH] clk: Set req_rate on reparenting
+
+If a non-rate clock started by default with a parent that never
+registered, core->req_rate will be 0. The expectation is that whenever
+the parent will be registered, req_rate will be updated with the new
+value that has just been computed.
+
+However, if that clock is a mux, clk_set_parent() can also make that
+clock no longer orphan. In this case however, we never update req_rate.
+Let's make sure it's the case for the newly unorphan clock and all its
+children.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c      |  18 ++++
+ drivers/clk/clk_test.c | 231 +++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 249 insertions(+)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1758,6 +1758,23 @@ static void clk_core_update_orphan_statu
+ 		clk_core_update_orphan_status(child, is_orphan);
+ }
+ 
++/*
++ * Update the orphan rate and req_rate of @core and all its children.
++ */
++static void clk_core_update_orphan_child_rates(struct clk_core *core)
++{
++	struct clk_core *child;
++	unsigned long parent_rate = 0;
++
++	if (core->parent)
++		parent_rate = core->parent->rate;
++
++	core->rate = core->req_rate = clk_recalc(core, parent_rate);
++
++	hlist_for_each_entry(child, &core->children, child_node)
++		clk_core_update_orphan_child_rates(child);
++}
++
+ static void clk_reparent(struct clk_core *core, struct clk_core *new_parent)
+ {
+ 	bool was_orphan = core->orphan;
+@@ -1782,6 +1799,7 @@ static void clk_reparent(struct clk_core
+ 	}
+ 
+ 	core->parent = new_parent;
++	clk_core_update_orphan_child_rates(core);
+ }
+ 
+ static struct clk_core *__clk_set_parent_before(struct clk_core *core,
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -577,6 +577,39 @@ clk_test_orphan_transparent_multiple_par
+ 
+ /*
+  * Test that, for a mux that started orphan but got switched to a valid
++ * parent, calling clk_drop_range() on the mux won't affect the parent
++ * rate.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_parent_drop_range(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk, *parent;
++	unsigned long parent_rate, new_parent_rate;
++	int ret;
++
++	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++
++	parent_rate = clk_get_rate(parent);
++	KUNIT_ASSERT_GT(test, parent_rate, 0);
++
++	ret = clk_set_parent(clk, parent);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_drop_range(clk);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	new_parent_rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, new_parent_rate, 0);
++	KUNIT_EXPECT_EQ(test, parent_rate, new_parent_rate);
++
++	clk_put(parent);
++}
++
++/*
++ * Test that, for a mux that started orphan but got switched to a valid
+  * parent, the rate of the mux and its new parent are consistent.
+  */
+ static void
+@@ -605,6 +638,39 @@ clk_test_orphan_transparent_multiple_par
+ 
+ /*
+  * Test that, for a mux that started orphan but got switched to a valid
++ * parent, calling clk_put() on the mux won't affect the parent rate.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_parent_put(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk *clk, *parent;
++	unsigned long parent_rate, new_parent_rate;
++	int ret;
++
++	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++
++	clk = clk_hw_get_clk(&ctx->hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, clk);
++
++	parent_rate = clk_get_rate(parent);
++	KUNIT_ASSERT_GT(test, parent_rate, 0);
++
++	ret = clk_set_parent(clk, parent);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	clk_put(clk);
++
++	new_parent_rate = clk_get_rate(parent);
++	KUNIT_ASSERT_GT(test, new_parent_rate, 0);
++	KUNIT_EXPECT_EQ(test, parent_rate, new_parent_rate);
++
++	clk_put(parent);
++}
++
++/*
++ * Test that, for a mux that started orphan but got switched to a valid
+  * parent, calling clk_set_rate_range() will affect the parent state if
+  * its rate is out of range.
+  */
+@@ -635,6 +701,41 @@ clk_test_orphan_transparent_multiple_par
+ }
+ 
+ /*
++ * Test that, for a mux that started orphan but got switched to a valid
++ * parent, calling clk_set_rate_range() won't affect the parent state if
++ * its rate is within range.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_untouched(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk, *parent;
++	unsigned long parent_rate, new_parent_rate;
++	int ret;
++
++	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++
++	parent_rate = clk_get_rate(parent);
++	KUNIT_ASSERT_GT(test, parent_rate, 0);
++
++	ret = clk_set_parent(clk, parent);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk,
++				 DUMMY_CLOCK_INIT_RATE - 1000,
++				 DUMMY_CLOCK_INIT_RATE + 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	new_parent_rate = clk_get_rate(parent);
++	KUNIT_ASSERT_GT(test, new_parent_rate, 0);
++	KUNIT_EXPECT_EQ(test, parent_rate, new_parent_rate);
++
++	clk_put(parent);
++}
++
++/*
+  * Test that, for a mux whose current parent hasn't been registered yet,
+  * calling clk_set_rate_range() will succeed, and will be taken into
+  * account when rounding a rate.
+@@ -660,8 +761,11 @@ clk_test_orphan_transparent_multiple_par
+ static struct kunit_case clk_orphan_transparent_multiple_parent_mux_test_cases[] = {
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_get_parent),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_drop_range),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_get_rate),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_put),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_modified),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_untouched),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_range_round_rate),
+ 	{}
+ };
+@@ -946,6 +1050,132 @@ static struct kunit_suite clk_orphan_tra
+ 	.test_cases = clk_orphan_transparent_single_parent_mux_test_cases,
+ };
+ 
++struct clk_single_parent_two_lvl_ctx {
++	struct clk_dummy_context parent_parent_ctx;
++	struct clk_dummy_context parent_ctx;
++	struct clk_hw hw;
++};
++
++static int
++clk_orphan_two_level_root_last_test_init(struct kunit *test)
++{
++	struct clk_single_parent_two_lvl_ctx *ctx;
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	test->priv = ctx;
++
++	ctx->parent_ctx.hw.init =
++		CLK_HW_INIT("intermediate-parent",
++			    "root-parent",
++			    &clk_dummy_single_parent_ops,
++			    CLK_SET_RATE_PARENT);
++	ret = clk_hw_register(NULL, &ctx->parent_ctx.hw);
++	if (ret)
++		return ret;
++
++	ctx->hw.init =
++		CLK_HW_INIT("test-clk", "intermediate-parent",
++			    &clk_dummy_single_parent_ops,
++			    CLK_SET_RATE_PARENT);
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	ctx->parent_parent_ctx.rate = DUMMY_CLOCK_INIT_RATE;
++	ctx->parent_parent_ctx.hw.init =
++		CLK_HW_INIT_NO_PARENT("root-parent",
++				      &clk_dummy_rate_ops,
++				      0);
++	ret = clk_hw_register(NULL, &ctx->parent_parent_ctx.hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++static void
++clk_orphan_two_level_root_last_test_exit(struct kunit *test)
++{
++	struct clk_single_parent_two_lvl_ctx *ctx = test->priv;
++
++	clk_hw_unregister(&ctx->hw);
++	clk_hw_unregister(&ctx->parent_ctx.hw);
++	clk_hw_unregister(&ctx->parent_parent_ctx.hw);
++}
++
++/*
++ * Test that, for a clock whose parent used to be orphan, clk_get_rate()
++ * will return the proper rate.
++ */
++static void
++clk_orphan_two_level_root_last_test_get_rate(struct kunit *test)
++{
++	struct clk_single_parent_two_lvl_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++
++	rate = clk_get_rate(clk);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_INIT_RATE);
++}
++
++/*
++ * Test that, for a clock whose parent used to be orphan,
++ * clk_set_rate_range() won't affect its rate if it is already within
++ * range.
++ *
++ * See (for Exynos 4210):
++ * https://lore.kernel.org/linux-clk/366a0232-bb4a-c357-6aa8-636e398e05eb@samsung.com/
++ */
++static void
++clk_orphan_two_level_root_last_test_set_range(struct kunit *test)
++{
++	struct clk_single_parent_two_lvl_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++	int ret;
++
++	ret = clk_set_rate_range(clk,
++				 DUMMY_CLOCK_INIT_RATE - 1000,
++				 DUMMY_CLOCK_INIT_RATE + 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_INIT_RATE);
++}
++
++static struct kunit_case
++clk_orphan_two_level_root_last_test_cases[] = {
++	KUNIT_CASE(clk_orphan_two_level_root_last_test_get_rate),
++	KUNIT_CASE(clk_orphan_two_level_root_last_test_set_range),
++	{}
++};
++
++/*
++ * Test suite for a basic, transparent, clock with a parent that is also
++ * such a clock. The parent's parent is registered last, while the
++ * parent and its child are registered in that order. The intermediate
++ * and leaf clocks will thus be orphan when registered, but the leaf
++ * clock itself will always have its parent and will never be
++ * reparented. Indeed, it's only orphan because its parent is.
++ *
++ * These tests are supposed to exercise the behaviour of the consumer
++ * API when dealing with an orphan clock, and how we deal with the
++ * transition to a valid parent.
++ */
++static struct kunit_suite
++clk_orphan_two_level_root_last_test_suite = {
++	.name = "clk-orphan-two-level-root-last-test",
++	.init = clk_orphan_two_level_root_last_test_init,
++	.exit = clk_orphan_two_level_root_last_test_exit,
++	.test_cases = clk_orphan_two_level_root_last_test_cases,
++};
++
+ /*
+  * Test that clk_set_rate_range won't return an error for a valid range
+  * and that it will make sure the rate of the clock is within the
+@@ -1629,6 +1859,7 @@ kunit_test_suites(
+ 	&clk_multiple_parents_mux_test_suite,
+ 	&clk_orphan_transparent_multiple_parent_mux_test_suite,
+ 	&clk_orphan_transparent_single_parent_test_suite,
++	&clk_orphan_two_level_root_last_test_suite,
+ 	&clk_range_test_suite,
+ 	&clk_range_maximize_test_suite,
+ 	&clk_range_minimize_test_suite,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0847-clk-Skip-set_rate_range-if-our-clock-is-orphan.patch b/target/linux/bcm27xx/patches-5.15/950-0847-clk-Skip-set_rate_range-if-our-clock-is-orphan.patch
new file mode 100644
index 0000000000..4244ad378f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0847-clk-Skip-set_rate_range-if-our-clock-is-orphan.patch
@@ -0,0 +1,123 @@
+From 655e66b0add0aba16e84587dbb939f8ddce612b0 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 1 Apr 2022 15:27:09 +0200
+Subject: [PATCH] clk: Skip set_rate_range if our clock is orphan
+
+clk_set_rate_range will now force a clk_set_rate() call to
+core->req_rate. However, if our clock is orphan, req_rate will be 0 and
+we will thus end up calling a set_rate to 0 on potentially all that
+clock subtree.
+
+This can be fairly invasive and result in poor decisions. In such a
+case, let's just store the new range but bail out and skip the set_rate.
+
+When that clock is no longer orphan though, we should be enforcing the
+new range but we don't. Let's add a skipped test to make sure we don't
+forget about that corner case.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c      |  6 +++++
+ drivers/clk/clk_test.c | 59 ++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 65 insertions(+)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -2388,6 +2388,12 @@ static int clk_set_rate_range_nolock(str
+ 	if (clk->core->flags & CLK_GET_RATE_NOCACHE)
+ 		rate = clk_core_get_rate_recalc(clk->core);
+ 
++	if (clk->core->orphan && !rate) {
++		pr_warn("%s: clk %s: Clock is orphan and doesn't have a rate!\n",
++			__func__, clk->core->name);
++		goto out;
++	}
++
+ 	/*
+ 	 * Since the boundaries have been changed, let's give the
+ 	 * opportunity to the provider to adjust the clock rate based on
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -737,6 +737,26 @@ clk_test_orphan_transparent_multiple_par
+ 
+ /*
+  * Test that, for a mux whose current parent hasn't been registered yet,
++ * calling clk_set_rate_range() will succeed but won't affect its rate.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_range_get_rate(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long rate;
++	int ret;
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_EXPECT_EQ(test, rate, 0);
++}
++
++/*
++ * Test that, for a mux whose current parent hasn't been registered yet,
+  * calling clk_set_rate_range() will succeed, and will be taken into
+  * account when rounding a rate.
+  */
+@@ -758,6 +778,43 @@ clk_test_orphan_transparent_multiple_par
+ 	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
+ }
+ 
++/*
++ * Test that, for a mux that started orphan, was assigned and rate and
++ * then got switched to a valid parent, its rate is eventually within
++ * range.
++ *
++ * FIXME: Even though we update the rate as part of clk_set_parent(), we
++ * don't evaluate whether that new rate is within range and needs to be
++ * adjusted.
++ */
++static void
++clk_test_orphan_transparent_multiple_parent_mux_set_range_set_parent_get_rate(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk, *parent;
++	unsigned long rate;
++	int ret;
++
++	kunit_skip(test, "This needs to be fixed in the core.");
++
++	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_parent(clk, parent);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
++
++	clk_put(parent);
++}
++
+ static struct kunit_case clk_orphan_transparent_multiple_parent_mux_test_cases[] = {
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_get_parent),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent),
+@@ -766,7 +823,9 @@ static struct kunit_case clk_orphan_tran
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_put),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_modified),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_parent_set_range_untouched),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_range_get_rate),
+ 	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_range_round_rate),
++	KUNIT_CASE(clk_test_orphan_transparent_multiple_parent_mux_set_range_set_parent_get_rate),
+ 	{}
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0848-clk-Add-our-request-boundaries-in-clk_core_init_rate.patch b/target/linux/bcm27xx/patches-5.15/950-0848-clk-Add-our-request-boundaries-in-clk_core_init_rate.patch
new file mode 100644
index 0000000000..1d3f213f54
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0848-clk-Add-our-request-boundaries-in-clk_core_init_rate.patch
@@ -0,0 +1,62 @@
+From 30e22b06c4ea57dba7ac18bf4ee229eda0705b73 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 13:45:05 +0200
+Subject: [PATCH] clk: Add our request boundaries in
+ clk_core_init_rate_req
+
+The expectation is that a new clk_rate_request is initialized through a
+call to clk_core_init_rate_req().
+
+However, at the moment it only fills the parent rate and clk_hw pointer,
+but omits the other fields such as the clock rate boundaries.
+
+Some users of that function will update them after calling it, but most
+don't.
+
+As we are passed the clk_core pointer, we have access to those
+boundaries in clk_core_init_rate_req() however, so let's just fill it
+there and remove it from the few callers that do it right.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1381,6 +1381,8 @@ static void clk_core_init_rate_req(struc
+ 	if (WARN_ON(!core || !req))
+ 		return;
+ 
++	clk_core_get_boundaries(core, &req->min_rate, &req->max_rate);
++
+ 	parent = core->parent;
+ 	if (parent) {
+ 		req->best_parent_hw = parent->hw;
+@@ -1455,7 +1457,6 @@ unsigned long clk_hw_round_rate(struct c
+ 	int ret;
+ 	struct clk_rate_request req;
+ 
+-	clk_core_get_boundaries(hw->core, &req.min_rate, &req.max_rate);
+ 	req.rate = rate;
+ 
+ 	ret = clk_core_round_rate_nolock(hw->core, &req);
+@@ -1488,7 +1489,6 @@ long clk_round_rate(struct clk *clk, uns
+ 	if (clk->exclusive_count)
+ 		clk_core_rate_unprotect(clk->core);
+ 
+-	clk_core_get_boundaries(clk->core, &req.min_rate, &req.max_rate);
+ 	req.rate = rate;
+ 
+ 	ret = clk_core_round_rate_nolock(clk->core, &req);
+@@ -1995,8 +1995,6 @@ static struct clk_core *clk_calc_new_rat
+ 		struct clk_rate_request req;
+ 
+ 		req.rate = rate;
+-		req.min_rate = min_rate;
+-		req.max_rate = max_rate;
+ 
+ 		clk_core_init_rate_req(core, &req);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0849-clk-Change-clk_core_init_rate_req-prototype.patch b/target/linux/bcm27xx/patches-5.15/950-0849-clk-Change-clk_core_init_rate_req-prototype.patch
new file mode 100644
index 0000000000..dcd6568c1d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0849-clk-Change-clk_core_init_rate_req-prototype.patch
@@ -0,0 +1,58 @@
+From ed9c0fcf492b3cc86bb573063785828c4df83809 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 13:48:03 +0200
+Subject: [PATCH] clk: Change clk_core_init_rate_req prototype
+
+The expectation is that a clk_rate_request structure is supposed to be
+initialized using clk_core_init_rate_req(), yet the rate we want to
+request still needs to be set by hand.
+
+Let's just pass the rate as a function argument so that callers don't
+have any extra work to do.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1374,13 +1374,15 @@ static int clk_core_determine_round_nolo
+ }
+ 
+ static void clk_core_init_rate_req(struct clk_core * const core,
+-				   struct clk_rate_request *req)
++				   struct clk_rate_request *req,
++				   unsigned long rate)
+ {
+ 	struct clk_core *parent;
+ 
+ 	if (WARN_ON(!core || !req))
+ 		return;
+ 
++	req->rate = rate;
+ 	clk_core_get_boundaries(core, &req->min_rate, &req->max_rate);
+ 
+ 	parent = core->parent;
+@@ -1408,7 +1410,7 @@ static int clk_core_round_rate_nolock(st
+ 		return 0;
+ 	}
+ 
+-	clk_core_init_rate_req(core, req);
++	clk_core_init_rate_req(core, req, req->rate);
+ 
+ 	if (clk_core_can_round(core))
+ 		return clk_core_determine_round_nolock(core, req);
+@@ -1994,9 +1996,7 @@ static struct clk_core *clk_calc_new_rat
+ 	if (clk_core_can_round(core)) {
+ 		struct clk_rate_request req;
+ 
+-		req.rate = rate;
+-
+-		clk_core_init_rate_req(core, &req);
++		clk_core_init_rate_req(core, &req, rate);
+ 
+ 		ret = clk_core_determine_round_nolock(core, &req);
+ 		if (ret < 0)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0850-clk-Introduce-clk_hw_init_rate_request.patch b/target/linux/bcm27xx/patches-5.15/950-0850-clk-Introduce-clk_hw_init_rate_request.patch
new file mode 100644
index 0000000000..6a04498301
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0850-clk-Introduce-clk_hw_init_rate_request.patch
@@ -0,0 +1,73 @@
+From 7023dd1743aa6bb305fdce96e6e80eecc6e01f16 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 14:49:56 +0200
+Subject: [PATCH] clk: Introduce clk_hw_init_rate_request()
+
+Some drivers (at91, imx, qcom) use __clk_determine_rate directly, and
+thus will need to initialise a clk_rate_request structure.
+
+However, drivers don't have access to the function that the core uses to
+initialize that structure which could prove to be useful.
+
+Let's create a function for clock providers that will initialize a
+clk_rate_request for a given clk_hw pointer and a rate.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c            | 20 ++++++++++++++++++++
+ include/linux/clk-provider.h |  6 ++++++
+ 2 files changed, 26 insertions(+)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1395,6 +1395,26 @@ static void clk_core_init_rate_req(struc
+ 	}
+ }
+ 
++/**
++ * clk_hw_init_rate_request - Initializes a clk_rate_request
++ * @hw: the clk for which we want to submit a rate request
++ * @req: the clk_rate_request structure we want to initialise
++ * @rate: the rate which is to be requested
++ *
++ * Initializes and fills a clk_rate_request structure to submit to
++ * __clk_determine_rate or similar functions.
++ */
++void clk_hw_init_rate_request(struct clk_hw * const hw,
++			      struct clk_rate_request *req,
++			      unsigned long rate)
++{
++	if (WARN_ON(!hw || !req))
++		return;
++
++	clk_core_init_rate_req(hw->core, req, rate);
++}
++EXPORT_SYMBOL_GPL(clk_hw_init_rate_request);
++
+ static bool clk_core_can_round(struct clk_core * const core)
+ {
+ 	return core->ops->determine_rate || core->ops->round_rate;
+--- a/include/linux/clk-provider.h
++++ b/include/linux/clk-provider.h
+@@ -42,6 +42,8 @@ struct dentry;
+  * struct clk_rate_request - Structure encoding the clk constraints that
+  * a clock user might require.
+  *
++ * Should be initialized by calling clk_hw_init_rate_request().
++ *
+  * @rate:		Requested clock rate. This field will be adjusted by
+  *			clock drivers according to hardware capabilities.
+  * @min_rate:		Minimum rate imposed by clk users.
+@@ -60,6 +62,10 @@ struct clk_rate_request {
+ 	struct clk_hw *best_parent_hw;
+ };
+ 
++void clk_hw_init_rate_request(struct clk_hw * const hw,
++			      struct clk_rate_request *req,
++			      unsigned long rate);
++
+ /**
+  * struct clk_duty - Struture encoding the duty cycle ratio of a clock
+  *
diff --git a/target/linux/bcm27xx/patches-5.15/950-0851-clk-Add-missing-clk_core_init_rate_req-calls.patch b/target/linux/bcm27xx/patches-5.15/950-0851-clk-Add-missing-clk_core_init_rate_req-calls.patch
new file mode 100644
index 0000000000..0fe7a39a7a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0851-clk-Add-missing-clk_core_init_rate_req-calls.patch
@@ -0,0 +1,49 @@
+From 2e9c468b513031e497d0133d7a2e396cb29d70c3 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 14:01:37 +0200
+Subject: [PATCH] clk: Add missing clk_core_init_rate_req calls
+
+Some callers of clk_core_round_rate_nolock() will initialize the
+clk_rate_request structure by hand, missing a few parameters that leads
+to inconsistencies in what drivers can expect from that structure.
+
+Let's use clk_core_init_rate_req() everywhere to make sure it's built in
+a consistent manner.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1479,7 +1479,7 @@ unsigned long clk_hw_round_rate(struct c
+ 	int ret;
+ 	struct clk_rate_request req;
+ 
+-	req.rate = rate;
++	clk_core_init_rate_req(hw->core, &req, rate);
+ 
+ 	ret = clk_core_round_rate_nolock(hw->core, &req);
+ 	if (ret)
+@@ -1511,7 +1511,7 @@ long clk_round_rate(struct clk *clk, uns
+ 	if (clk->exclusive_count)
+ 		clk_core_rate_unprotect(clk->core);
+ 
+-	req.rate = rate;
++	clk_core_init_rate_req(clk->core, &req, rate);
+ 
+ 	ret = clk_core_round_rate_nolock(clk->core, &req);
+ 
+@@ -2215,8 +2215,7 @@ static unsigned long clk_core_req_round_
+ 	if (cnt < 0)
+ 		return cnt;
+ 
+-	clk_core_get_boundaries(core, &req.min_rate, &req.max_rate);
+-	req.rate = req_rate;
++	clk_core_init_rate_req(core, &req, req_rate);
+ 
+ 	ret = clk_core_round_rate_nolock(core, &req);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0852-clk-Remove-redundant-clk_core_init_rate_req-call.patch b/target/linux/bcm27xx/patches-5.15/950-0852-clk-Remove-redundant-clk_core_init_rate_req-call.patch
new file mode 100644
index 0000000000..cfc272d194
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0852-clk-Remove-redundant-clk_core_init_rate_req-call.patch
@@ -0,0 +1,34 @@
+From 62bc67ade6e30b4a578f105d8bb18de0ffc45a88 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 14:06:53 +0200
+Subject: [PATCH] clk: Remove redundant clk_core_init_rate_req() call
+
+Since all the users of clk_core_round_rate_nolock() will now properly
+initialize, there's no need for it to initialize the request itself.
+
+This is even dangerous, as if the clock cannot change its rate by itself
+and has CLK_SET_RATE_PARENT, clk_core_round_rate_nolock() will call
+itself with the parent clock but the client clk_rate_request structure.
+
+We will then reinitialize the child request with the parent context
+(parent, boundaries, etc.), which is an issue if the parent ever changes
+its own parent or parent rate.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1430,8 +1430,6 @@ static int clk_core_round_rate_nolock(st
+ 		return 0;
+ 	}
+ 
+-	clk_core_init_rate_req(core, req, req->rate);
+-
+ 	if (clk_core_can_round(core))
+ 		return clk_core_determine_round_nolock(core, req);
+ 	else if (core->flags & CLK_SET_RATE_PARENT)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0853-clk-Switch-from-__clk_determine_rate-to-clk_core_rou.patch b/target/linux/bcm27xx/patches-5.15/950-0853-clk-Switch-from-__clk_determine_rate-to-clk_core_rou.patch
new file mode 100644
index 0000000000..2f5eb06019
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0853-clk-Switch-from-__clk_determine_rate-to-clk_core_rou.patch
@@ -0,0 +1,60 @@
+From dc4310d9d45e72360b8fdf46d514b6d29c92e808 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 13:52:55 +0200
+Subject: [PATCH] clk: Switch from __clk_determine_rate to
+ clk_core_round_rate_nolock
+
+clk_mux_determine_rate_flags() will call into __clk_determine_rate()
+with a clk_hw pointer, while it has access to the clk_core pointer
+already.
+
+This leads to back and forth between clk_hw and clk_core, while
+__clk_determine_rate will only call clk_core_round_rate_nolock() with
+the clk_core pointer it retrieved from the clk_hw.
+
+Let's simplify things a bit by calling into clk_core_round_rate_nolock
+directly.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 13 ++++++++++---
+ 1 file changed, 10 insertions(+), 3 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -542,6 +542,9 @@ static bool mux_is_better_rate(unsigned
+ 	return now <= rate && now > best;
+ }
+ 
++static int clk_core_round_rate_nolock(struct clk_core *core,
++				      struct clk_rate_request *req);
++
+ int clk_mux_determine_rate_flags(struct clk_hw *hw,
+ 				 struct clk_rate_request *req,
+ 				 unsigned long flags)
+@@ -555,8 +558,12 @@ int clk_mux_determine_rate_flags(struct
+ 	if (core->flags & CLK_SET_RATE_NO_REPARENT) {
+ 		parent = core->parent;
+ 		if (core->flags & CLK_SET_RATE_PARENT) {
+-			ret = __clk_determine_rate(parent ? parent->hw : NULL,
+-						   &parent_req);
++			if (!parent) {
++				req->rate = 0;
++				return 0;
++			}
++
++			ret = clk_core_round_rate_nolock(parent, &parent_req);
+ 			if (ret)
+ 				return ret;
+ 
+@@ -579,7 +586,7 @@ int clk_mux_determine_rate_flags(struct
+ 
+ 		if (core->flags & CLK_SET_RATE_PARENT) {
+ 			parent_req = *req;
+-			ret = __clk_determine_rate(parent->hw, &parent_req);
++			ret = clk_core_round_rate_nolock(parent, &parent_req);
+ 			if (ret)
+ 				continue;
+ 		} else {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0854-clk-Introduce-clk_core_has_parent.patch b/target/linux/bcm27xx/patches-5.15/950-0854-clk-Introduce-clk_core_has_parent.patch
new file mode 100644
index 0000000000..909acfefb0
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0854-clk-Introduce-clk_core_has_parent.patch
@@ -0,0 +1,133 @@
+From ca0a8c7c024409a0c83afdab7e436348d1a7390f Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 7 Apr 2022 14:11:37 +0200
+Subject: [PATCH] clk: Introduce clk_core_has_parent()
+
+We will need to know if a clk_core pointer has a given parent in other
+functions, so let's create a clk_core_has_parent() function that
+clk_has_parent() will call into.
+
+For good measure, let's add some unit tests as well to make sure it
+works properly.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c      | 36 +++++++++++++++++++++---------------
+ drivers/clk/clk_test.c | 32 ++++++++++++++++++++++++++++++++
+ 2 files changed, 53 insertions(+), 15 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -545,6 +545,26 @@ static bool mux_is_better_rate(unsigned
+ static int clk_core_round_rate_nolock(struct clk_core *core,
+ 				      struct clk_rate_request *req);
+ 
++static bool clk_core_has_parent(struct clk_core *core, struct clk_core *parent)
++{
++	unsigned int i;
++
++	/* Optimize for the case where the parent is already the parent. */
++	if (core == parent)
++		return true;
++
++	for (i = 0; i < core->num_parents; i++) {
++		struct clk_core *tmp = clk_core_get_parent_by_index(core, i);
++		if (!tmp)
++			continue;
++
++		if (tmp == parent)
++			return true;
++	}
++
++	return false;
++}
++
+ int clk_mux_determine_rate_flags(struct clk_hw *hw,
+ 				 struct clk_rate_request *req,
+ 				 unsigned long flags)
+@@ -2569,25 +2589,11 @@ void clk_hw_reparent(struct clk_hw *hw,
+  */
+ bool clk_has_parent(struct clk *clk, struct clk *parent)
+ {
+-	struct clk_core *core, *parent_core;
+-	int i;
+-
+ 	/* NULL clocks should be nops, so return success if either is NULL. */
+ 	if (!clk || !parent)
+ 		return true;
+ 
+-	core = clk->core;
+-	parent_core = parent->core;
+-
+-	/* Optimize for the case where the parent is already the parent. */
+-	if (core->parent == parent_core)
+-		return true;
+-
+-	for (i = 0; i < core->num_parents; i++)
+-		if (!strcmp(core->parents[i].name, parent_core->name))
+-			return true;
+-
+-	return false;
++	return clk_core_has_parent(clk->core, parent->core);
+ }
+ EXPORT_SYMBOL_GPL(clk_has_parent);
+ 
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -473,8 +473,24 @@ clk_test_multiple_parents_mux_get_parent
+ 	KUNIT_EXPECT_TRUE(test, clk_is_match(parent, ctx->parents_ctx[0].hw.clk));
+ }
+ 
++/*
++ * Test that for a clock with a multiple parents, clk_has_parent()
++ * actually reports all of them as parents.
++ */
++static void
++clk_test_multiple_parents_mux_has_parent(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++
++	KUNIT_EXPECT_TRUE(test, clk_has_parent(clk, ctx->parents_ctx[0].hw.clk));
++	KUNIT_EXPECT_TRUE(test, clk_has_parent(clk, ctx->parents_ctx[1].hw.clk));
++}
++
+ static struct kunit_case clk_multiple_parents_mux_test_cases[] = {
+ 	KUNIT_CASE(clk_test_multiple_parents_mux_get_parent),
++	KUNIT_CASE(clk_test_multiple_parents_mux_has_parent),
+ 	{}
+ };
+ 
+@@ -907,6 +923,21 @@ clk_test_single_parent_mux_get_parent(st
+ }
+ 
+ /*
++ * Test that for a clock with a single parent, clk_has_parent() actually
++ * reports it as a parent.
++ */
++static void
++clk_test_single_parent_mux_has_parent(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent = ctx->parent_ctx.hw.clk;
++
++	KUNIT_EXPECT_TRUE(test, clk_has_parent(clk, parent));
++}
++
++/*
+  * Test that for a clock that can't modify its rate and with a single
+  * parent, if we set disjoints range on the parent and then the child,
+  * the second will return an error.
+@@ -1004,6 +1035,7 @@ clk_test_single_parent_mux_set_range_rou
+ 
+ static struct kunit_case clk_single_parent_mux_test_cases[] = {
+ 	KUNIT_CASE(clk_test_single_parent_mux_get_parent),
++	KUNIT_CASE(clk_test_single_parent_mux_has_parent),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_child_last),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_parent_last),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_round_rate_child_smaller),
diff --git a/target/linux/bcm27xx/patches-5.15/950-0855-clk-Stop-forwarding-clk_rate_requests-to-the-parent.patch b/target/linux/bcm27xx/patches-5.15/950-0855-clk-Stop-forwarding-clk_rate_requests-to-the-parent.patch
new file mode 100644
index 0000000000..4573dbcc05
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0855-clk-Stop-forwarding-clk_rate_requests-to-the-parent.patch
@@ -0,0 +1,366 @@
+From 6d969d963a86c88ca1d6dcbc25447e2937e833b1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 14:36:59 +0200
+Subject: [PATCH] clk: Stop forwarding clk_rate_requests to the parent
+
+If the clock cannot modify its rate and has CLK_SET_RATE_PARENT,
+clk_mux_determine_rate_flags() and clk_core_round_rate_nolock() will
+call clk_core_round_rate_nolock() with its parent clock but use the
+request of the child node either directly (clk_core_round_rate_nolock())
+or by copying it (clk_mux_determine_rate_flags()).
+
+Both cases are problematic since the parent will now have a request with
+the best parent fields of the child (so pointing to itself) and the
+boundaries of the child as well.
+
+clk_core_round_rate_nolock() is even worse since we would directly
+modify the caller structure if the parent was ever to modify its own
+parent or its parent rate, then returning to the caller a best parent
+that isn't a parent of the clock we just called clk_determine_rate()
+onto.
+
+Let's create a new function that will create a new request to forward to
+the parent, clk_core_forward_rate_req() and update the relevant call
+sites to that new function.
+
+Let's also add a test to make sure we avoid regressions there.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c      |  58 ++++++++++++--
+ drivers/clk/clk_test.c | 176 +++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 227 insertions(+), 7 deletions(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -542,6 +542,10 @@ static bool mux_is_better_rate(unsigned
+ 	return now <= rate && now > best;
+ }
+ 
++static void clk_core_init_rate_req(struct clk_core * const core,
++				   struct clk_rate_request *req,
++				   unsigned long rate);
++
+ static int clk_core_round_rate_nolock(struct clk_core *core,
+ 				      struct clk_rate_request *req);
+ 
+@@ -565,6 +569,24 @@ static bool clk_core_has_parent(struct c
+ 	return false;
+ }
+ 
++static void
++clk_core_forward_rate_req(struct clk_core * const core,
++			  struct clk_core * const parent,
++			  struct clk_rate_request * const old_req,
++			  struct clk_rate_request *req)
++{
++	if (WARN_ON(!clk_core_has_parent(core, parent)))
++		return;
++
++	clk_core_init_rate_req(parent, req, old_req->rate);
++
++	if (req->min_rate < old_req->min_rate)
++		req->min_rate = old_req->min_rate;
++
++	if (req->max_rate > old_req->max_rate)
++		req->max_rate = old_req->max_rate;
++}
++
+ int clk_mux_determine_rate_flags(struct clk_hw *hw,
+ 				 struct clk_rate_request *req,
+ 				 unsigned long flags)
+@@ -572,17 +594,19 @@ int clk_mux_determine_rate_flags(struct
+ 	struct clk_core *core = hw->core, *parent, *best_parent = NULL;
+ 	int i, num_parents, ret;
+ 	unsigned long best = 0;
+-	struct clk_rate_request parent_req = *req;
+ 
+ 	/* if NO_REPARENT flag set, pass through to current parent */
+ 	if (core->flags & CLK_SET_RATE_NO_REPARENT) {
+ 		parent = core->parent;
+ 		if (core->flags & CLK_SET_RATE_PARENT) {
++			struct clk_rate_request parent_req;
++
+ 			if (!parent) {
+ 				req->rate = 0;
+ 				return 0;
+ 			}
+ 
++			clk_core_forward_rate_req(core, parent, req, &parent_req);
+ 			ret = clk_core_round_rate_nolock(parent, &parent_req);
+ 			if (ret)
+ 				return ret;
+@@ -600,23 +624,29 @@ int clk_mux_determine_rate_flags(struct
+ 	/* find the parent that can provide the fastest rate <= rate */
+ 	num_parents = core->num_parents;
+ 	for (i = 0; i < num_parents; i++) {
++		unsigned long parent_rate;
++
+ 		parent = clk_core_get_parent_by_index(core, i);
+ 		if (!parent)
+ 			continue;
+ 
+ 		if (core->flags & CLK_SET_RATE_PARENT) {
+-			parent_req = *req;
++			struct clk_rate_request parent_req;
++
++			clk_core_forward_rate_req(core, parent, req, &parent_req);
+ 			ret = clk_core_round_rate_nolock(parent, &parent_req);
+ 			if (ret)
+ 				continue;
++
++			parent_rate = parent_req.rate;
+ 		} else {
+-			parent_req.rate = clk_core_get_rate_nolock(parent);
++			parent_rate = clk_core_get_rate_nolock(parent);
+ 		}
+ 
+-		if (mux_is_better_rate(req->rate, parent_req.rate,
++		if (mux_is_better_rate(req->rate, parent_rate,
+ 				       best, flags)) {
+ 			best_parent = parent;
+-			best = parent_req.rate;
++			best = parent_rate;
+ 		}
+ 	}
+ 
+@@ -1450,6 +1480,8 @@ static bool clk_core_can_round(struct cl
+ static int clk_core_round_rate_nolock(struct clk_core *core,
+ 				      struct clk_rate_request *req)
+ {
++	int ret;
++
+ 	lockdep_assert_held(&prepare_lock);
+ 
+ 	if (!core) {
+@@ -1459,8 +1491,20 @@ static int clk_core_round_rate_nolock(st
+ 
+ 	if (clk_core_can_round(core))
+ 		return clk_core_determine_round_nolock(core, req);
+-	else if (core->flags & CLK_SET_RATE_PARENT)
+-		return clk_core_round_rate_nolock(core->parent, req);
++
++	if (core->flags & CLK_SET_RATE_PARENT) {
++		struct clk_rate_request parent_req;
++
++		clk_core_forward_rate_req(core, core->parent, req, &parent_req);
++		ret = clk_core_round_rate_nolock(core->parent, &parent_req);
++		if (ret)
++			return ret;
++
++		req->best_parent_rate = parent_req.rate;
++		req->rate = parent_req.rate;
++
++		return 0;
++	}
+ 
+ 	req->rate = core->rate;
+ 	return 0;
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -999,6 +999,34 @@ clk_test_single_parent_mux_set_range_dis
+ 
+ /*
+  * Test that for a clock that can't modify its rate and with a single
++ * parent, if we set a range on the parent and then call
++ * clk_round_rate(), the boundaries of the parent are taken into
++ * account.
++ */
++static void
++clk_test_single_parent_mux_set_range_round_rate_parent_only(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	unsigned long rate;
++	int ret;
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(parent, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
++}
++
++/*
++ * Test that for a clock that can't modify its rate and with a single
+  * parent, if we set a range on the parent and a more restrictive one on
+  * the child, and then call clk_round_rate(), the boundaries of the
+  * two clocks are taken into account.
+@@ -1033,12 +1061,50 @@ clk_test_single_parent_mux_set_range_rou
+ 	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
+ }
+ 
++/*
++ * Test that for a clock that can't modify its rate and with a single
++ * parent, if we set a range on the child and a more restrictive one on
++ * the parent, and then call clk_round_rate(), the boundaries of the
++ * two clocks are taken into account.
++ */
++static void
++clk_test_single_parent_mux_set_range_round_rate_parent_smaller(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	unsigned long rate;
++	int ret;
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(parent, DUMMY_CLOCK_RATE_1 + 1000, DUMMY_CLOCK_RATE_2 - 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
++
++	rate = clk_round_rate(clk, DUMMY_CLOCK_RATE_2 + 1000);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2 - 1000);
++}
++
+ static struct kunit_case clk_single_parent_mux_test_cases[] = {
+ 	KUNIT_CASE(clk_test_single_parent_mux_get_parent),
+ 	KUNIT_CASE(clk_test_single_parent_mux_has_parent),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_child_last),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_parent_last),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_round_rate_child_smaller),
++	KUNIT_CASE(clk_test_single_parent_mux_set_range_round_rate_parent_only),
++	KUNIT_CASE(clk_test_single_parent_mux_set_range_round_rate_parent_smaller),
+ 	{}
+ };
+ 
+@@ -1945,7 +2011,117 @@ static struct kunit_suite clk_range_mini
+ 	.test_cases = clk_range_minimize_test_cases,
+ };
+ 
++struct clk_leaf_mux_ctx {
++	struct clk_multiple_parent_ctx mux_ctx;
++	struct clk_hw hw;
++};
++
++static int
++clk_leaf_mux_set_rate_parent_test_init(struct kunit *test)
++{
++	struct clk_leaf_mux_ctx *ctx;
++	const char *top_parents[2] = { "parent-0", "parent-1" };
++	int ret;
++
++	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
++	if (!ctx)
++		return -ENOMEM;
++	test->priv = ctx;
++
++	ctx->mux_ctx.parents_ctx[0].hw.init = CLK_HW_INIT_NO_PARENT("parent-0",
++								    &clk_dummy_rate_ops,
++								    0);
++	ctx->mux_ctx.parents_ctx[0].rate = DUMMY_CLOCK_RATE_1;
++	ret = clk_hw_register(NULL, &ctx->mux_ctx.parents_ctx[0].hw);
++	if (ret)
++		return ret;
++
++	ctx->mux_ctx.parents_ctx[1].hw.init = CLK_HW_INIT_NO_PARENT("parent-1",
++								    &clk_dummy_rate_ops,
++								    0);
++	ctx->mux_ctx.parents_ctx[1].rate = DUMMY_CLOCK_RATE_2;
++	ret = clk_hw_register(NULL, &ctx->mux_ctx.parents_ctx[1].hw);
++	if (ret)
++		return ret;
++
++	ctx->mux_ctx.current_parent = 0;
++	ctx->mux_ctx.hw.init = CLK_HW_INIT_PARENTS("test-mux", top_parents,
++						   &clk_multiple_parents_mux_ops,
++						   0);
++	ret = clk_hw_register(NULL, &ctx->mux_ctx.hw);
++	if (ret)
++		return ret;
++
++	ctx->hw.init = CLK_HW_INIT_HW("test-clock", &ctx->mux_ctx.hw,
++				      &clk_dummy_single_parent_ops,
++				      CLK_SET_RATE_PARENT);
++	ret = clk_hw_register(NULL, &ctx->hw);
++	if (ret)
++		return ret;
++
++	return 0;
++}
++
++static void clk_leaf_mux_set_rate_parent_test_exit(struct kunit *test)
++{
++	struct clk_leaf_mux_ctx *ctx = test->priv;
++
++	clk_hw_unregister(&ctx->hw);
++	clk_hw_unregister(&ctx->mux_ctx.hw);
++	clk_hw_unregister(&ctx->mux_ctx.parents_ctx[0].hw);
++	clk_hw_unregister(&ctx->mux_ctx.parents_ctx[1].hw);
++}
++
++/*
++ * Test that, for a clock that will forward any rate request to its
++ * parent, the rate request structure returned by __clk_determine_rate
++ * is sane and will be what we expect.
++ */
++static void clk_leaf_mux_set_rate_parent_determine_rate(struct kunit *test)
++{
++	struct clk_leaf_mux_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk_rate_request req;
++	unsigned long rate;
++	int ret;
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_EQ(test, rate, DUMMY_CLOCK_RATE_1);
++
++	clk_hw_init_rate_request(hw, &req, DUMMY_CLOCK_RATE_2);
++
++	ret = __clk_determine_rate(hw, &req);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	KUNIT_EXPECT_EQ(test, req.rate, DUMMY_CLOCK_RATE_2);
++	KUNIT_EXPECT_EQ(test, req.best_parent_rate, DUMMY_CLOCK_RATE_2);
++	KUNIT_EXPECT_PTR_EQ(test, req.best_parent_hw, &ctx->mux_ctx.hw);
++}
++
++static struct kunit_case clk_leaf_mux_set_rate_parent_test_cases[] = {
++	KUNIT_CASE(clk_leaf_mux_set_rate_parent_determine_rate),
++	{}
++};
++
++/*
++ * Test suite for a clock whose parent is a mux with multiple parents.
++ * The leaf clock has CLK_SET_RATE_PARENT, and will forward rate
++ * requests to the mux, which will then select which parent is the best
++ * fit for a given rate.
++ *
++ * These tests are supposed to exercise the behaviour of muxes, and the
++ * proper selection of parents.
++  */
++static struct kunit_suite clk_leaf_mux_set_rate_parent_test_suite = {
++	.name = "clk-leaf-mux-set-rate-parent",
++	.init = clk_leaf_mux_set_rate_parent_test_init,
++	.exit = clk_leaf_mux_set_rate_parent_test_exit,
++	.test_cases = clk_leaf_mux_set_rate_parent_test_cases,
++};
++
+ kunit_test_suites(
++	&clk_leaf_mux_set_rate_parent_test_suite,
+ 	&clk_test_suite,
+ 	&clk_multiple_parents_mux_test_suite,
+ 	&clk_orphan_transparent_multiple_parent_mux_test_suite,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0856-clk-Zero-the-clk_rate_request-structure.patch b/target/linux/bcm27xx/patches-5.15/950-0856-clk-Zero-the-clk_rate_request-structure.patch
new file mode 100644
index 0000000000..05ef714deb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0856-clk-Zero-the-clk_rate_request-structure.patch
@@ -0,0 +1,28 @@
+From a067f7842c9371cd487fef6872380937db24d9e5 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Sat, 2 Apr 2022 14:37:39 +0200
+Subject: [PATCH] clk: Zero the clk_rate_request structure
+
+In order to make sure we don't carry anything over from an already
+existing clk_rate_request pointer we would pass to
+clk_core_init_rate_req(), let's zero the entire structure before
+initializing it.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -1439,6 +1439,8 @@ static void clk_core_init_rate_req(struc
+ 	if (WARN_ON(!core || !req))
+ 		return;
+ 
++	memset(req, 0, sizeof(*req));
++
+ 	req->rate = rate;
+ 	clk_core_get_boundaries(core, &req->min_rate, &req->max_rate);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0857-clk-Test-the-clock-pointer-in-clk_hw_get_name.patch b/target/linux/bcm27xx/patches-5.15/950-0857-clk-Test-the-clock-pointer-in-clk_hw_get_name.patch
new file mode 100644
index 0000000000..dcb41f9032
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0857-clk-Test-the-clock-pointer-in-clk_hw_get_name.patch
@@ -0,0 +1,29 @@
+From f8740e21bb2a6eb11da683901e22fbb6fea80dc8 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Tue, 5 Apr 2022 15:20:27 +0200
+Subject: [PATCH] clk: Test the clock pointer in clk_hw_get_name()
+
+Unlike __clk_get_name(), clk_hw_get_name() doesn't test wether passed
+clk_hw pointer is NULL or not and dereferences it directly. This can
+then lead to NULL pointer dereference.
+
+Let's make sure the pointer isn't NULL before dereferencing it.
+
+Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx8mp
+Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> # exynos4210, meson g12b
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -269,7 +269,7 @@ EXPORT_SYMBOL_GPL(__clk_get_name);
+ 
+ const char *clk_hw_get_name(const struct clk_hw *hw)
+ {
+-	return hw->core->name;
++	return !hw ? NULL : hw->core->name;
+ }
+ EXPORT_SYMBOL_GPL(clk_hw_get_name);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0858-clk-bcm-rpi-Add-variant-structure.patch b/target/linux/bcm27xx/patches-5.15/950-0858-clk-bcm-rpi-Add-variant-structure.patch
new file mode 100644
index 0000000000..3fde2c951a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0858-clk-bcm-rpi-Add-variant-structure.patch
@@ -0,0 +1,151 @@
+From cc7262a6c84f9a19c61307587d441e3347962388 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 17 Jan 2022 17:19:30 +0100
+Subject: [PATCH] clk: bcm: rpi: Add variant structure
+
+We only export a bunch of firmware clocks, and some of them require
+special treatment.
+
+This has been do so far using some tests on the clock id in various
+places, but this is fairly hard to extend and doesn't scale very well.
+
+Since we'll need some more cases in the next patches, let's switch to a
+variant structure that defines the behaviour we need to have for a given
+clock.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 76 +++++++++++++++++++++++--------
+ 1 file changed, 56 insertions(+), 20 deletions(-)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -58,6 +58,8 @@ static char *rpi_firmware_clk_names[] =
+ #define RPI_FIRMWARE_STATE_ENABLE_BIT	BIT(0)
+ #define RPI_FIRMWARE_STATE_WAIT_BIT	BIT(1)
+ 
++struct raspberrypi_clk_variant;
++
+ struct raspberrypi_clk {
+ 	struct device *dev;
+ 	struct rpi_firmware *firmware;
+@@ -68,10 +70,45 @@ struct raspberrypi_clk_data {
+ 	struct clk_hw hw;
+ 
+ 	unsigned int id;
++	struct raspberrypi_clk_variant *variant;
+ 
+ 	struct raspberrypi_clk *rpi;
+ };
+ 
++struct raspberrypi_clk_variant {
++	bool		export;
++	char		*clkdev;
++};
++
++static struct raspberrypi_clk_variant
++raspberrypi_clk_variants[RPI_FIRMWARE_NUM_CLK_ID] = {
++	[RPI_FIRMWARE_ARM_CLK_ID] = {
++		.export = true,
++		.clkdev = "cpu0",
++	},
++	[RPI_FIRMWARE_CORE_CLK_ID] = {
++		.export = true,
++	},
++	[RPI_FIRMWARE_M2MC_CLK_ID] = {
++		.export = true,
++	},
++	[RPI_FIRMWARE_V3D_CLK_ID] = {
++		.export = true,
++	},
++	[RPI_FIRMWARE_HEVC_CLK_ID] = {
++		.export = true,
++	},
++	[RPI_FIRMWARE_PIXEL_BVB_CLK_ID] = {
++		.export = true,
++	},
++	[RPI_FIRMWARE_VEC_CLK_ID] = {
++		.export = true,
++	},
++	[RPI_FIRMWARE_PIXEL_CLK_ID] = {
++		.export = true,
++	},
++};
++
+ /*
+  * Structure of the message passed to Raspberry Pi's firmware in order to
+  * change clock rates. The 'disable_turbo' option is only available to the ARM
+@@ -185,7 +222,8 @@ static const struct clk_ops raspberrypi_
+ 
+ static struct clk_hw *raspberrypi_clk_register(struct raspberrypi_clk *rpi,
+ 					       unsigned int parent,
+-					       unsigned int id)
++					       unsigned int id,
++					       struct raspberrypi_clk_variant *variant)
+ {
+ 	struct raspberrypi_clk_data *data;
+ 	struct clk_init_data init = {};
+@@ -197,6 +235,7 @@ static struct clk_hw *raspberrypi_clk_re
+ 		return ERR_PTR(-ENOMEM);
+ 	data->rpi = rpi;
+ 	data->id = id;
++	data->variant = variant;
+ 
+ 	init.name = devm_kasprintf(rpi->dev, GFP_KERNEL,
+ 				   "fw-clk-%s",
+@@ -230,9 +269,9 @@ static struct clk_hw *raspberrypi_clk_re
+ 
+ 	clk_hw_set_rate_range(&data->hw, min_rate, max_rate);
+ 
+-	if (id == RPI_FIRMWARE_ARM_CLK_ID) {
++	if (variant->clkdev) {
+ 		ret = devm_clk_hw_register_clkdev(rpi->dev, &data->hw,
+-						  NULL, "cpu0");
++						  NULL, variant->clkdev);
+ 		if (ret) {
+ 			dev_err(rpi->dev, "Failed to initialize clkdev\n");
+ 			return ERR_PTR(ret);
+@@ -266,30 +305,27 @@ static int raspberrypi_discover_clocks(s
+ 		return ret;
+ 
+ 	while (clks->id) {
+-		struct clk_hw *hw;
++		struct raspberrypi_clk_variant *variant;
++
++		if (clks->id > RPI_FIRMWARE_NUM_CLK_ID) {
++			dev_err(rpi->dev, "Unknown clock id: %u", clks->id);
++			return -EINVAL;
++		}
++
++		variant = &raspberrypi_clk_variants[clks->id];
++		if (variant->export) {
++			struct clk_hw *hw;
+ 
+-		switch (clks->id) {
+-		case RPI_FIRMWARE_ARM_CLK_ID:
+-		case RPI_FIRMWARE_CORE_CLK_ID:
+-		case RPI_FIRMWARE_M2MC_CLK_ID:
+-		case RPI_FIRMWARE_V3D_CLK_ID:
+-		case RPI_FIRMWARE_HEVC_CLK_ID:
+-		case RPI_FIRMWARE_PIXEL_BVB_CLK_ID:
+-		case RPI_FIRMWARE_VEC_CLK_ID:
+-		case RPI_FIRMWARE_PIXEL_CLK_ID:
+ 			hw = raspberrypi_clk_register(rpi, clks->parent,
+-						      clks->id);
++						      clks->id, variant);
+ 			if (IS_ERR(hw))
+ 				return PTR_ERR(hw);
+ 
+ 			data->hws[clks->id] = hw;
+ 			data->num = clks->id + 1;
+-			fallthrough;
+-
+-		default:
+-			clks++;
+-			break;
+ 		}
++
++		clks++;
+ 	}
+ 
+ 	return 0;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0859-clk-bcm-rpi-Set-a-default-minimum-rate.patch b/target/linux/bcm27xx/patches-5.15/950-0859-clk-bcm-rpi-Set-a-default-minimum-rate.patch
new file mode 100644
index 0000000000..dfa68383d5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0859-clk-bcm-rpi-Set-a-default-minimum-rate.patch
@@ -0,0 +1,69 @@
+From ac0b202c0bae166810c63e2ac5067b6ea3f4af43 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 17 Jan 2022 17:31:06 +0100
+Subject: [PATCH] clk: bcm: rpi: Set a default minimum rate
+
+The M2MC clock provides the state machine clock for both HDMI
+controllers.
+
+However, if no HDMI monitor is plugged in at boot, its clock rate will
+be left at 0 by the firmware and will make any register access end up in
+a CPU stall, even though the clock was enabled.
+
+We had some code in the HDMI controller to deal with this before, but it
+makes more sense to have it in the clock driver. Move it there.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 26 ++++++++++++++++++++++++++
+ 1 file changed, 26 insertions(+)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -78,6 +78,7 @@ struct raspberrypi_clk_data {
+ struct raspberrypi_clk_variant {
+ 	bool		export;
+ 	char		*clkdev;
++	unsigned long	min_rate;
+ };
+ 
+ static struct raspberrypi_clk_variant
+@@ -91,6 +92,18 @@ raspberrypi_clk_variants[RPI_FIRMWARE_NU
+ 	},
+ 	[RPI_FIRMWARE_M2MC_CLK_ID] = {
+ 		.export = true,
++
++		/*
++		 * If we boot without any cable connected to any of the
++		 * HDMI connector, the firmware will skip the HSM
++		 * initialization and leave it with a rate of 0,
++		 * resulting in a bus lockup when we're accessing the
++		 * registers even if it's enabled.
++		 *
++		 * Let's put a sensible default so that we don't end up
++		 * in this situation.
++		 */
++		.min_rate = 120000000,
+ 	},
+ 	[RPI_FIRMWARE_V3D_CLK_ID] = {
+ 		.export = true,
+@@ -278,6 +291,19 @@ static struct clk_hw *raspberrypi_clk_re
+ 		}
+ 	}
+ 
++	if (variant->min_rate) {
++		unsigned long rate;
++
++		clk_hw_set_rate_range(&data->hw, variant->min_rate, max_rate);
++
++		rate = raspberrypi_fw_get_rate(&data->hw, 0);
++		if (rate < variant->min_rate) {
++			ret = raspberrypi_fw_set_rate(&data->hw, variant->min_rate, 0);
++			if (ret)
++				return ERR_PTR(ret);
++		}
++	}
++
+ 	return &data->hw;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0860-clk-bcm-rpi-Run-some-clocks-at-the-minimum-rate-allo.patch b/target/linux/bcm27xx/patches-5.15/950-0860-clk-bcm-rpi-Run-some-clocks-at-the-minimum-rate-allo.patch
new file mode 100644
index 0000000000..cfa1349c16
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0860-clk-bcm-rpi-Run-some-clocks-at-the-minimum-rate-allo.patch
@@ -0,0 +1,98 @@
+From 3bb347f520702ab886aa3513cf7d9035b09e624e Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 17 Jan 2022 17:36:23 +0100
+Subject: [PATCH] clk: bcm: rpi: Run some clocks at the minimum rate
+ allowed
+
+The core clock and M2MC clocks are shared between some devices (Unicam
+controllers and the HVS, and the HDMI controllers, respectively) that
+will have various, varying, requirements depending on their current work
+load.
+
+Since those loads can require a fairly high clock rate in extreme
+conditions (up to ~600MHz), we can end up running those clocks at their
+maximum frequency even though we no longer require such a high rate.
+
+Fortunately, those devices don't require an exact rate but a minimum
+rate, and all the drivers are using clk_set_min_rate. Thus, we can just
+rely on the fact that the clk_request minimum (which is the aggregated
+minimum of all the clock users) is what we want at all times.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/bcm/clk-raspberrypi.c | 37 +++++++++++++++++++++++++++++++
+ 1 file changed, 37 insertions(+)
+
+--- a/drivers/clk/bcm/clk-raspberrypi.c
++++ b/drivers/clk/bcm/clk-raspberrypi.c
+@@ -79,6 +79,7 @@ struct raspberrypi_clk_variant {
+ 	bool		export;
+ 	char		*clkdev;
+ 	unsigned long	min_rate;
++	bool		minimize;
+ };
+ 
+ static struct raspberrypi_clk_variant
+@@ -89,6 +90,18 @@ raspberrypi_clk_variants[RPI_FIRMWARE_NU
+ 	},
+ 	[RPI_FIRMWARE_CORE_CLK_ID] = {
+ 		.export = true,
++
++		/*
++		 * The clock is shared between the HVS and the CSI
++		 * controllers, on the BCM2711 and will change depending
++		 * on the pixels composited on the HVS and the capture
++		 * resolution on Unicam.
++		 *
++		 * Since the rate can get quite large, and we need to
++		 * coordinate between both driver instances, let's
++		 * always use the minimum the drivers will let us.
++		 */
++		.minimize = true,
+ 	},
+ 	[RPI_FIRMWARE_M2MC_CLK_ID] = {
+ 		.export = true,
+@@ -104,6 +117,16 @@ raspberrypi_clk_variants[RPI_FIRMWARE_NU
+ 		 * in this situation.
+ 		 */
+ 		.min_rate = 120000000,
++
++		/*
++		 * The clock is shared between the two HDMI controllers
++		 * on the BCM2711 and will change depending on the
++		 * resolution output on each. Since the rate can get
++		 * quite large, and we need to coordinate between both
++		 * driver instances, let's always use the minimum the
++		 * drivers will let us.
++		 */
++		.minimize = true,
+ 	},
+ 	[RPI_FIRMWARE_V3D_CLK_ID] = {
+ 		.export = true,
+@@ -217,12 +240,26 @@ static int raspberrypi_fw_set_rate(struc
+ static int raspberrypi_fw_dumb_determine_rate(struct clk_hw *hw,
+ 					      struct clk_rate_request *req)
+ {
++	struct raspberrypi_clk_data *data =
++		container_of(hw, struct raspberrypi_clk_data, hw);
++	struct raspberrypi_clk_variant *variant = data->variant;
++
+ 	/*
+ 	 * The firmware will do the rounding but that isn't part of
+ 	 * the interface with the firmware, so we just do our best
+ 	 * here.
+ 	 */
++
+ 	req->rate = clamp(req->rate, req->min_rate, req->max_rate);
++
++	/*
++	 * We want to aggressively reduce the clock rate here, so let's
++	 * just ignore the requested rate and return the bare minimum
++	 * rate we can get away with.
++	 */
++	if (variant->minimize && req->min_rate > 0)
++		req->rate = req->min_rate;
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0861-Revert-drm-vc4-kms-Move-clock-request-to-our-HVS-sta.patch b/target/linux/bcm27xx/patches-5.15/950-0861-Revert-drm-vc4-kms-Move-clock-request-to-our-HVS-sta.patch
new file mode 100644
index 0000000000..dcb1747d35
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0861-Revert-drm-vc4-kms-Move-clock-request-to-our-HVS-sta.patch
@@ -0,0 +1,53 @@
+From 89941a8e5343c11364f0fcbeb9dec76afa8f4f2e Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 16 Mar 2022 09:51:32 +0100
+Subject: [PATCH] Revert "drm/vc4: kms: Move clock request to our HVS
+ state"
+
+This reverts commit c65633a429b15f9d182a5bc7d6387fecbd5b7bb0.
+---
+ drivers/gpu/drm/vc4/vc4_drv.h | 1 +
+ drivers/gpu/drm/vc4/vc4_kms.c | 8 +++-----
+ 2 files changed, 4 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -326,6 +326,7 @@ struct vc4_hvs {
+ 	u32 __iomem *dlist;
+ 
+ 	struct clk *core_clk;
++	struct clk_request *core_req;
+ 
+ 	/* Memory manager for CRTCs to allocate space in the display
+ 	 * list.  Units are dwords.
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -40,7 +40,6 @@ static struct vc4_ctm_state *to_vc4_ctm_
+ struct vc4_hvs_state {
+ 	struct drm_private_state base;
+ 	unsigned long core_clock_rate;
+-	struct clk_request *core_req;
+ 
+ 	struct {
+ 		unsigned in_use: 1;
+@@ -407,8 +406,7 @@ static void vc4_atomic_commit_tail(struc
+ 		 * And remove the previous one based on the HVS
+ 		 * requirements if any.
+ 		 */
+-		clk_request_done(old_hvs_state->core_req);
+-		old_hvs_state->core_req = NULL;
++               clk_request_done(hvs->core_req);
+ 	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+@@ -442,8 +440,8 @@ static void vc4_atomic_commit_tail(struc
+ 		 * Request a clock rate based on the current HVS
+ 		 * requirements.
+ 		 */
+-		new_hvs_state->core_req = clk_request_start(hvs->core_clk,
+-							    new_hvs_state->core_clock_rate);
++		hvs->core_req = clk_request_start(hvs->core_clk,
++						  new_hvs_state->core_clock_rate);
+ 
+ 		/* And drop the temporary request */
+ 		clk_request_done(core_req);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0862-Revert-drm-vc4-Increase-the-core-clock-based-on-HVS-.patch b/target/linux/bcm27xx/patches-5.15/950-0862-Revert-drm-vc4-Increase-the-core-clock-based-on-HVS-.patch
new file mode 100644
index 0000000000..5fc1b93903
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0862-Revert-drm-vc4-Increase-the-core-clock-based-on-HVS-.patch
@@ -0,0 +1,52 @@
+From fc4570783b4552459a97dd67e20043eeb87ad09a Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 16 Mar 2022 09:51:44 +0100
+Subject: [PATCH] Revert "drm/vc4: Increase the core clock based on HVS
+ load"
+
+This reverts commit 02c8543cc6940f8201e9beb601bd56421d911e83.
+---
+ drivers/gpu/drm/vc4/vc4_drv.h |  1 -
+ drivers/gpu/drm/vc4/vc4_kms.c | 13 +------------
+ 2 files changed, 1 insertion(+), 13 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -326,7 +326,6 @@ struct vc4_hvs {
+ 	u32 __iomem *dlist;
+ 
+ 	struct clk *core_clk;
+-	struct clk_request *core_req;
+ 
+ 	/* Memory manager for CRTCs to allocate space in the display
+ 	 * list.  Units are dwords.
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -402,11 +402,6 @@ static void vc4_atomic_commit_tail(struc
+ 						500000000, state_rate);
+ 
+ 		core_req = clk_request_start(hvs->core_clk, core_rate);
+-		/*
+-		 * And remove the previous one based on the HVS
+-		 * requirements if any.
+-		 */
+-               clk_request_done(hvs->core_req);
+ 	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+@@ -436,14 +431,8 @@ static void vc4_atomic_commit_tail(struc
+ 		drm_dbg(dev, "Running the core clock at %lu Hz\n",
+ 			new_hvs_state->core_clock_rate);
+ 
+-		/*
+-		 * Request a clock rate based on the current HVS
+-		 * requirements.
+-		 */
+-		hvs->core_req = clk_request_start(hvs->core_clk,
+-						  new_hvs_state->core_clock_rate);
++		clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
+ 
+-		/* And drop the temporary request */
+ 		clk_request_done(core_req);
+ 
+ 		drm_dbg(dev, "Core clock actual rate: %lu Hz\n",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0863-Revert-drm-vc4-hdmi-Convert-to-the-new-clock-request.patch b/target/linux/bcm27xx/patches-5.15/950-0863-Revert-drm-vc4-hdmi-Convert-to-the-new-clock-request.patch
new file mode 100644
index 0000000000..cff2372f55
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0863-Revert-drm-vc4-hdmi-Convert-to-the-new-clock-request.patch
@@ -0,0 +1,39 @@
+From 0e5138afb28dbfd4f9004a48c879cf9c0d27f2b9 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 16 Mar 2022 09:52:34 +0100
+Subject: [PATCH] Revert "drm/vc4: hdmi: Convert to the new clock
+ request API"
+
+This reverts commit 5dbb9357519a9479eacdda130713bf0dc44e069c.
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 5 +----
+ 1 file changed, 1 insertion(+), 4 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -355,7 +355,6 @@ static void vc4_atomic_commit_tail(struc
+ 	struct drm_crtc *crtc;
+ 	struct vc4_hvs_state *old_hvs_state;
+ 	unsigned int channel;
+-	struct clk_request *core_req;
+ 	int i;
+ 
+ 	old_hvs_state = vc4_hvs_get_old_global_state(state);
+@@ -401,7 +400,7 @@ static void vc4_atomic_commit_tail(struc
+ 		unsigned long core_rate = max_t(unsigned long,
+ 						500000000, state_rate);
+ 
+-		core_req = clk_request_start(hvs->core_clk, core_rate);
++		clk_set_min_rate(hvs->core_clk, core_rate);
+ 	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+@@ -433,8 +432,6 @@ static void vc4_atomic_commit_tail(struc
+ 
+ 		clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
+ 
+-		clk_request_done(core_req);
+-
+ 		drm_dbg(dev, "Core clock actual rate: %lu Hz\n",
+ 			clk_get_rate(hvs->core_clk));
+ 	}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0864-Revert-rpivid-Switch-to-new-clock-api.patch b/target/linux/bcm27xx/patches-5.15/950-0864-Revert-rpivid-Switch-to-new-clock-api.patch
new file mode 100644
index 0000000000..8fe4a3d96f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0864-Revert-rpivid-Switch-to-new-clock-api.patch
@@ -0,0 +1,65 @@
+From 775b90e37e5e418b19827eb696e5d034e7089f57 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 16 Mar 2022 09:58:31 +0100
+Subject: [PATCH] Revert "rpivid: Switch to new clock api"
+
+This reverts commit ec7556e20c2c29c3df9493248a1a4d60ed20ae38.
+---
+ drivers/staging/media/rpivid/rpivid.h       |  1 -
+ drivers/staging/media/rpivid/rpivid_video.c | 18 +++++-------------
+ 2 files changed, 5 insertions(+), 14 deletions(-)
+
+--- a/drivers/staging/media/rpivid/rpivid.h
++++ b/drivers/staging/media/rpivid/rpivid.h
+@@ -90,7 +90,6 @@ struct rpivid_ctx {
+ 	struct v4l2_pix_format_mplane	dst_fmt;
+ 	int dst_fmt_set;
+ 
+-	struct clk_request		*clk_req;
+ 	int 				src_stream_on;
+ 	int 				dst_stream_on;
+ 
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -545,13 +545,10 @@ static int rpivid_buf_prepare(struct vb2
+ static void stop_clock(struct rpivid_dev *dev, struct rpivid_ctx *ctx)
+ {
+ 	if (ctx->src_stream_on ||
+-	    ctx->dst_stream_on ||
+-	    !ctx->clk_req)
++	    ctx->dst_stream_on)
+ 		return;
+ 
+-	clk_request_done(ctx->clk_req);
+-	ctx->clk_req = NULL;
+-
++	clk_set_min_rate(dev->clock, 0);
+ 	clk_disable_unprepare(dev->clock);
+ }
+ 
+@@ -561,22 +558,17 @@ static int start_clock(struct rpivid_dev
+ 	long max_hevc_clock;
+ 	int rv;
+ 
+-	if (ctx->clk_req)
+-		return 0;
+-
+ 	max_hevc_clock = clk_round_rate(dev->clock, ULONG_MAX);
+ 
+-	ctx->clk_req = clk_request_start(dev->clock, max_hevc_clock);
+-	if (!ctx->clk_req) {
++	rv = clk_set_min_rate(dev->clock, max_hevc_clock);
++	if (rv) {
+ 		dev_err(dev->dev, "Failed to set clock rate\n");
+-		return -EIO;
++		return rv;
+ 	}
+ 
+ 	rv = clk_prepare_enable(dev->clock);
+ 	if (rv) {
+ 		dev_err(dev->dev, "Failed to enable clock\n");
+-		clk_request_done(ctx->clk_req);
+-		ctx->clk_req = NULL;
+ 		return rv;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0865-clk-Add-clk_get_rate_range.patch b/target/linux/bcm27xx/patches-5.15/950-0865-clk-Add-clk_get_rate_range.patch
new file mode 100644
index 0000000000..5366c057cd
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0865-clk-Add-clk_get_rate_range.patch
@@ -0,0 +1,137 @@
+From 1008f7a86f470914e78a54a2a75cf8bbc8b8f9db Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 15 Apr 2022 14:17:41 +0200
+Subject: [PATCH] clk: Add clk_get_rate_range
+
+With the recent introduction of clock drivers that will force their
+clock rate to either the minimum or maximum boundaries, it becomes
+harder for clock users to discover either boundary of their clock.
+
+Indeed, the best way to do that previously was to call clk_round_rate()
+on either 0 or ULONG_MAX and count on the driver to clamp the rate to
+the current boundary, but that won't work anymore.
+
+Since any other alternative (calling clk_set_rate_range() and looking at
+the returned value, calling clk_round_rate() still, or just doing
+nothing) depends on how the driver will behaves, we actually are
+punching a hole through the abstraction provided by the clock framework.
+
+In order to avoid any abstraction violation, let's create a bunch of
+accessors that will return the current minimum and maximum for a given
+clock.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c   | 18 ++++++++++++++
+ include/linux/clk.h | 59 +++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 77 insertions(+)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -2576,6 +2576,24 @@ int clk_set_max_rate(struct clk *clk, un
+ EXPORT_SYMBOL_GPL(clk_set_max_rate);
+ 
+ /**
++ * clk_get_rate_range - returns the clock rate range for a clock source
++ * @clk: clock source
++ * @min: Pointer to the variable that will hold the minimum
++ * @max: Pointer to the variable that will hold the maximum
++ *
++ * Fills the @min and @max variables with the minimum and maximum that
++ * the clock source can reach.
++ */
++void clk_get_rate_range(struct clk *clk, unsigned long *min, unsigned long *max)
++{
++	if (!clk || !min || !max)
++		return;
++
++	clk_core_get_boundaries(clk->core, min, max);
++}
++EXPORT_SYMBOL_GPL(clk_get_rate_range);
++
++/**
+  * clk_get_parent - return the parent of a clk
+  * @clk: the clk whose parent gets returned
+  *
+--- a/include/linux/clk.h
++++ b/include/linux/clk.h
+@@ -714,6 +714,17 @@ bool clk_has_parent(struct clk *clk, str
+ int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max);
+ 
+ /**
++ * clk_get_rate_range - returns the clock rate range for a clock source
++ * @clk: clock source
++ * @min: Pointer to the variable that will hold the minimum
++ * @max: Pointer to the variable that will hold the maximum
++ *
++ * Fills the @min and @max variables with the minimum and maximum that
++ * the clock source can reach.
++ */
++void clk_get_rate_range(struct clk *clk, unsigned long *min, unsigned long *max);
++
++/**
+  * clk_set_min_rate - set a minimum clock rate for a clock source
+  * @clk: clock source
+  * @rate: desired minimum clock rate in Hz, inclusive
+@@ -909,6 +920,16 @@ static inline int clk_set_rate_range(str
+ 	return 0;
+ }
+ 
++static inline void clk_get_rate_range(struct clk *clk, unsigned long *min,
++				      unsigned long *max)
++{
++	if (!min || !max)
++		return;
++
++	*min = 0;
++	*max = ULONG_MAX;
++}
++
+ static inline int clk_set_min_rate(struct clk *clk, unsigned long rate)
+ {
+ 	return 0;
+@@ -999,6 +1020,44 @@ static inline int clk_drop_range(struct
+ }
+ 
+ /**
++ * clk_get_min_rate - returns the minimum clock rate for a clock source
++ * @clk: clock source
++ *
++ * Returns either the minimum clock rate in Hz that clock source can
++ * reach, or 0 on error.
++ */
++static inline unsigned long clk_get_min_rate(struct clk *clk)
++{
++	unsigned long min, max;
++
++	if (!clk)
++		return 0;
++
++	clk_get_rate_range(clk, &min, &max);
++
++	return min;
++}
++
++/**
++ * clk_get_max_rate - returns the maximum clock rate for a clock source
++ * @clk: clock source
++ *
++ * Returns either the maximum clock rate in Hz that clock source can
++ * reach, or 0 on error.
++ */
++static inline unsigned long clk_get_max_rate(struct clk *clk)
++{
++	unsigned long min, max;
++
++	if (!clk)
++		return 0;
++
++	clk_get_rate_range(clk, &min, &max);
++
++	return max;
++}
++
++/**
+  * clk_get_optional - lookup and obtain a reference to an optional clock
+  *		      producer.
+  * @dev: device for clock "consumer"
diff --git a/target/linux/bcm27xx/patches-5.15/950-0866-clk-tests-Add-some-tests-for-clk_get_rate_range.patch b/target/linux/bcm27xx/patches-5.15/950-0866-clk-tests-Add-some-tests-for-clk_get_rate_range.patch
new file mode 100644
index 0000000000..fdf2c0cc7b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0866-clk-tests-Add-some-tests-for-clk_get_rate_range.patch
@@ -0,0 +1,225 @@
+From 96da86bde649d53c634b35be715c1e499e39ccf7 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 15 Apr 2022 14:45:17 +0200
+Subject: [PATCH] clk: tests: Add some tests for clk_get_rate_range()
+
+Let's introduce a bunch of unit tests to make sure the values returned
+by clk_get_rate_range() are sane.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 182 +++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 182 insertions(+)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -923,6 +923,109 @@ clk_test_single_parent_mux_get_parent(st
+ }
+ 
+ /*
++ * Test that for a clock with a single parent and CLK_SET_RATE_PARENT,
++ * if we set a range on both the child clock and its parent, with a
++ * smaller range on the child, the rate range returned by
++ * clk_get_rate_range() is aggregate of both ranges.
++ */
++static void
++clk_test_single_parent_mux_get_range_both_child_smaller(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	unsigned long min, max;
++	int ret;
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(parent, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk,
++				 DUMMY_CLOCK_RATE_1 + 1000,
++				 DUMMY_CLOCK_RATE_2 - 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	clk_get_rate_range(clk, &min, &max);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_EQ(test, max, DUMMY_CLOCK_RATE_2 - 1000);
++}
++
++/*
++ * Test that for a clock with a single parent and CLK_SET_RATE_PARENT,
++ * if we set a range on both the child clock and its parent, with a
++ * smaller range on the parent, the rate range returned by
++ * clk_get_rate_range() is aggregate of both ranges.
++ *
++ * FIXME: clk_get_rate_range() (and clk_core_get_boundaries() in
++ * particular) doesn't take the parent range into account when the clock
++ * has CLK_SET_RATE_PARENT.
++ */
++static void
++clk_test_single_parent_mux_get_range_both_parent_smaller(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	unsigned long min, max;
++	int ret;
++
++	kunit_skip(test, "This needs to be fixed in the core.");
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(parent,
++				 DUMMY_CLOCK_RATE_1 + 1000,
++				 DUMMY_CLOCK_RATE_2 - 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	clk_get_rate_range(clk, &min, &max);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_2 - 1000);
++}
++
++/*
++ * Test that for a clock with a single parent and CLK_SET_RATE_PARENT,
++ * if we set a range on the parent clock only, the rate range returned
++ * by clk_get_rate_range() on the children clock matches the parent
++ * range.
++ *
++ * FIXME: clk_get_rate_range() (and clk_core_get_boundaries() in
++ * particular) doesn't take the parent range into account when the clock
++ * has CLK_SET_RATE_PARENT.
++ */
++static void
++clk_test_single_parent_mux_get_range_parent_only(struct kunit *test)
++{
++	struct clk_single_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent;
++	unsigned long min, max;
++	int ret;
++
++	kunit_skip(test, "This needs to be fixed in the core.");
++
++	parent = clk_get_parent(clk);
++	KUNIT_ASSERT_PTR_NE(test, parent, NULL);
++
++	ret = clk_set_rate_range(parent, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	clk_get_rate_range(clk, &min, &max);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_2);
++}
++
++/*
+  * Test that for a clock with a single parent, clk_has_parent() actually
+  * reports it as a parent.
+  */
+@@ -1099,6 +1202,9 @@ clk_test_single_parent_mux_set_range_rou
+ 
+ static struct kunit_case clk_single_parent_mux_test_cases[] = {
+ 	KUNIT_CASE(clk_test_single_parent_mux_get_parent),
++	KUNIT_CASE(clk_test_single_parent_mux_get_range_both_child_smaller),
++	KUNIT_CASE(clk_test_single_parent_mux_get_range_both_parent_smaller),
++	KUNIT_CASE(clk_test_single_parent_mux_get_range_parent_only),
+ 	KUNIT_CASE(clk_test_single_parent_mux_has_parent),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_child_last),
+ 	KUNIT_CASE(clk_test_single_parent_mux_set_range_disjoint_parent_last),
+@@ -1334,6 +1440,79 @@ clk_orphan_two_level_root_last_test_suit
+ };
+ 
+ /*
++ * Test that clk_set_rate_range() and clk_get_rate_range() are
++ * consistent on a simple clock without any parent.
++ */
++static void clk_range_test_get_range(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long min, max;
++	int ret;
++
++	ret = clk_set_rate_range(clk, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	clk_get_rate_range(clk, &min, &max);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_EQ(test, max, DUMMY_CLOCK_RATE_2);
++}
++
++/*
++ * Test that, on a simple clock without any parent, if a rate range is
++ * set on a clk, it's properly reported by clk_get_rate_range() on all
++ * the clk structure of that clock.
++ */
++static void clk_range_test_get_range_multiple_clk(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *user1, *user2;
++	unsigned long min, max;
++	int ret;
++
++	user1 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user1);
++
++	user2 = clk_hw_get_clk(hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, user2);
++
++	ret = clk_set_rate_range(user1,
++				 DUMMY_CLOCK_RATE_1,
++				 DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	clk_get_rate_range(user2, &min, &max);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_1);
++	KUNIT_EXPECT_EQ(test, max, DUMMY_CLOCK_RATE_2);
++}
++
++/*
++ * Test that, on a simple clock without any parent, if a rate range is
++ * set on struct clk_hw, it's properly reported by clk_get_rate_range().
++ */
++static void clk_range_test_get_range_with_hw(struct kunit *test)
++{
++	struct clk_dummy_context *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	unsigned long min, max;
++	int ret;
++
++	clk_hw_set_rate_range(hw, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
++
++	ret = clk_set_rate_range(clk,
++				 DUMMY_CLOCK_RATE_1 + 1000,
++				 DUMMY_CLOCK_RATE_2 - 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	clk_get_rate_range(clk, &min, &max);
++	KUNIT_EXPECT_EQ(test, min, DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_EXPECT_EQ(test, max, DUMMY_CLOCK_RATE_2 - 1000);
++}
++
++/*
+  * Test that clk_set_rate_range won't return an error for a valid range
+  * and that it will make sure the rate of the clock is within the
+  * boundaries.
+@@ -1621,6 +1800,9 @@ static void clk_range_test_set_range_get
+ }
+ 
+ static struct kunit_case clk_range_test_cases[] = {
++	KUNIT_CASE(clk_range_test_get_range),
++	KUNIT_CASE(clk_range_test_get_range_with_hw),
++	KUNIT_CASE(clk_range_test_get_range_multiple_clk),
+ 	KUNIT_CASE(clk_range_test_set_range),
+ 	KUNIT_CASE(clk_range_test_set_range_invalid),
+ 	KUNIT_CASE(clk_range_test_multiple_disjoints_range),
diff --git a/target/linux/bcm27xx/patches-5.15/950-0867-clk-tests-Add-missing-test-case-for-ranges.patch b/target/linux/bcm27xx/patches-5.15/950-0867-clk-tests-Add-missing-test-case-for-ranges.patch
new file mode 100644
index 0000000000..3491adc8ce
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0867-clk-tests-Add-missing-test-case-for-ranges.patch
@@ -0,0 +1,78 @@
+From d75b267a431f5afd20cfea90021bb63cc8ecfc6b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 15 Apr 2022 15:00:44 +0200
+Subject: [PATCH] clk: tests: Add missing test case for ranges
+
+Let's add a test on the rate range after a reparenting. This fails for
+now, but it's worth having it to document the corner cases we don't
+support yet.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk_test.c | 52 ++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 52 insertions(+)
+
+--- a/drivers/clk/clk_test.c
++++ b/drivers/clk/clk_test.c
+@@ -488,9 +488,61 @@ clk_test_multiple_parents_mux_has_parent
+ 	KUNIT_EXPECT_TRUE(test, clk_has_parent(clk, ctx->parents_ctx[1].hw.clk));
+ }
+ 
++/*
++ * Test that for a clock with a multiple parents, if we set a range on
++ * that clock and the parent is changed, its rate after the reparenting
++ * is still within the range we asked for.
++ *
++ * FIXME: clk_set_parent() only does the reparenting but doesn't
++ * reevaluate whether the new clock rate is within its boundaries or
++ * not.
++ */
++static void
++clk_test_multiple_parents_mux_set_range_set_parent_get_rate(struct kunit *test)
++{
++	struct clk_multiple_parent_ctx *ctx = test->priv;
++	struct clk_hw *hw = &ctx->hw;
++	struct clk *clk = hw->clk;
++	struct clk *parent1, *parent2;
++	unsigned long rate;
++	int ret;
++
++	kunit_skip(test, "This needs to be fixed in the core.");
++
++	parent1 = clk_hw_get_clk(&ctx->parents_ctx[0].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent1);
++	KUNIT_ASSERT_TRUE(test, clk_is_match(clk_get_parent(clk), parent1));
++
++	parent2 = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
++	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent2);
++
++	ret = clk_set_rate(parent1, DUMMY_CLOCK_RATE_1);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate(parent2, DUMMY_CLOCK_RATE_2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_rate_range(clk,
++				 DUMMY_CLOCK_RATE_1 - 1000,
++				 DUMMY_CLOCK_RATE_1 + 1000);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	ret = clk_set_parent(clk, parent2);
++	KUNIT_ASSERT_EQ(test, ret, 0);
++
++	rate = clk_get_rate(clk);
++	KUNIT_ASSERT_GT(test, rate, 0);
++	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1 - 1000);
++	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
++
++	clk_put(parent2);
++	clk_put(parent1);
++}
++
+ static struct kunit_case clk_multiple_parents_mux_test_cases[] = {
+ 	KUNIT_CASE(clk_test_multiple_parents_mux_get_parent),
+ 	KUNIT_CASE(clk_test_multiple_parents_mux_has_parent),
++	KUNIT_CASE(clk_test_multiple_parents_mux_set_range_set_parent_get_rate),
+ 	{}
+ };
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0868-drm-vc4-hdmi-Rework-hdmi_enable_4kp60-detection.patch b/target/linux/bcm27xx/patches-5.15/950-0868-drm-vc4-hdmi-Rework-hdmi_enable_4kp60-detection.patch
new file mode 100644
index 0000000000..60f6921ede
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0868-drm-vc4-hdmi-Rework-hdmi_enable_4kp60-detection.patch
@@ -0,0 +1,134 @@
+From 62dd8774e71d9af9b0f3cabdeacbb80d24313504 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 24 Mar 2022 11:57:57 +0100
+Subject: [PATCH] drm/vc4: hdmi: Rework hdmi_enable_4kp60 detection
+
+In order to support higher HDMI frequencies, users have to set the
+hdmi_enable_4kp60 parameter in their config.txt file.
+
+We were detecting this so far by calling clk_round_rate on the core
+clock with the frequency we're supposed to run at when one of those
+modes is enabled. Whether or not the parameter was enabled could then be
+inferred by the returned rate since the maximum clock rate reported by
+the firmware was one of the side effect of setting that parameter.
+
+However, the recent clock rework we did changed what clk_round_rate was
+returning to always return the minimum allowed, and thus this test
+wasn't reliable anymore.
+
+Let's instead try to set a minimum on that clock for the rate we'd like
+to reach. If the maximum reported by the firmware is below the minimum
+we're trying to set, the clock framework will return an error which we
+then can use to infer whether the parameter is set or not.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_drv.h  |  8 ++++++++
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 14 ++++----------
+ drivers/gpu/drm/vc4/vc4_hdmi.h |  8 --------
+ drivers/gpu/drm/vc4/vc4_hvs.c  |  6 ++++++
+ 4 files changed, 18 insertions(+), 18 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -341,6 +341,14 @@ struct vc4_hvs {
+ 
+ 	/* HVS version 5 flag, therefore requires updated dlist structures */
+ 	bool hvs5;
++
++	/*
++	 * Even if HDMI0 on the RPi4 can output modes requiring a pixel
++	 * rate higher than 297MHz, it needs some adjustments in the
++	 * config.txt file to be able to do so and thus won't always be
++	 * available.
++	 */
++	bool vc5_hdmi_enable_scrambling;
+ };
+ 
+ struct vc4_plane {
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -291,6 +291,7 @@ static int vc4_hdmi_connector_get_modes(
+ {
+ 	struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
+ 	struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder;
++	struct vc4_dev *vc4 = to_vc4_dev(connector->dev);
+ 	int ret = 0;
+ 	struct edid *edid;
+ 
+@@ -309,7 +310,7 @@ static int vc4_hdmi_connector_get_modes(
+ 	ret = drm_add_edid_modes(connector, edid);
+ 	kfree(edid);
+ 
+-	if (vc4_hdmi->disable_4kp60) {
++	if (!vc4->hvs->vc5_hdmi_enable_scrambling) {
+ 		struct drm_device *drm = connector->dev;
+ 		struct drm_display_mode *mode;
+ 
+@@ -1671,11 +1672,12 @@ vc4_hdmi_encoder_clock_valid(const struc
+ {
+ 	const struct drm_connector *connector = &vc4_hdmi->connector;
+ 	const struct drm_display_info *info = &connector->display_info;
++	struct vc4_dev *vc4 = to_vc4_dev(connector->dev);
+ 
+ 	if (clock > vc4_hdmi->variant->max_pixel_clock)
+ 		return MODE_CLOCK_HIGH;
+ 
+-	if (vc4_hdmi->disable_4kp60 && clock > HDMI_14_MAX_TMDS_CLK)
++	if (!vc4->hvs->vc5_hdmi_enable_scrambling && clock > HDMI_14_MAX_TMDS_CLK)
+ 		return MODE_CLOCK_HIGH;
+ 
+ 	if (info->max_tmds_clock && clock > (info->max_tmds_clock * 1000))
+@@ -3157,14 +3159,6 @@ static int vc4_hdmi_bind(struct device *
+ 	vc4_hdmi->disable_wifi_frequencies =
+ 		of_property_read_bool(dev->of_node, "wifi-2.4ghz-coexistence");
+ 
+-	if (variant->max_pixel_clock == 600000000) {
+-		struct vc4_dev *vc4 = to_vc4_dev(drm);
+-		long max_rate = clk_round_rate(vc4->hvs->core_clk, 550000000);
+-
+-		if (max_rate < 550000000)
+-			vc4_hdmi->disable_4kp60 = true;
+-	}
+-
+ 	/*
+ 	 * If we boot without any cable connected to the HDMI connector,
+ 	 * the firmware will skip the HSM initialization and leave it
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
+@@ -169,14 +169,6 @@ struct vc4_hdmi {
+ 	 */
+ 	bool disable_wifi_frequencies;
+ 
+-	/*
+-	 * Even if HDMI0 on the RPi4 can output modes requiring a pixel
+-	 * rate higher than 297MHz, it needs some adjustments in the
+-	 * config.txt file to be able to do so and thus won't always be
+-	 * available.
+-	 */
+-	bool disable_4kp60;
+-
+ 	struct cec_adapter *cec_adap;
+ 	struct cec_msg cec_rx_msg;
+ 	bool cec_tx_ok;
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -897,12 +897,18 @@ static int vc4_hvs_bind(struct device *d
+ 	hvs->regset.nregs = ARRAY_SIZE(hvs_regs);
+ 
+ 	if (hvs->hvs5) {
++		unsigned long max_rate;
++
+ 		hvs->core_clk = devm_clk_get(&pdev->dev, NULL);
+ 		if (IS_ERR(hvs->core_clk)) {
+ 			dev_err(&pdev->dev, "Couldn't get core clock\n");
+ 			return PTR_ERR(hvs->core_clk);
+ 		}
+ 
++		max_rate = clk_get_max_rate(hvs->core_clk);
++		if (max_rate >= 550000000)
++			hvs->vc5_hdmi_enable_scrambling = true;
++
+ 		ret = clk_prepare_enable(hvs->core_clk);
+ 		if (ret) {
+ 			dev_err(&pdev->dev, "Couldn't enable the core clock\n");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0869-drm-vc4-kms-Warn-if-clk_set_min_rate-fails.patch b/target/linux/bcm27xx/patches-5.15/950-0869-drm-vc4-kms-Warn-if-clk_set_min_rate-fails.patch
new file mode 100644
index 0000000000..2331ce14cc
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0869-drm-vc4-kms-Warn-if-clk_set_min_rate-fails.patch
@@ -0,0 +1,36 @@
+From 067cebf5a6624a8613ac407efc72f80060ab4efb Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 25 Mar 2022 15:48:48 +0100
+Subject: [PATCH] drm/vc4: kms: Warn if clk_set_min_rate fails
+
+We currently ignore the clk_set_min_rate return code assuming it would
+succeed. However, it can fail if we ask for a rate higher than the
+current maximum for example.
+
+Since we can't fail in atomic_commit, at least warn on failure.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -400,7 +400,7 @@ static void vc4_atomic_commit_tail(struc
+ 		unsigned long core_rate = max_t(unsigned long,
+ 						500000000, state_rate);
+ 
+-		clk_set_min_rate(hvs->core_clk, core_rate);
++		WARN_ON(clk_set_min_rate(hvs->core_clk, core_rate));
+ 	}
+ 
+ 	drm_atomic_helper_commit_modeset_disables(dev, state);
+@@ -430,7 +430,7 @@ static void vc4_atomic_commit_tail(struc
+ 		drm_dbg(dev, "Running the core clock at %lu Hz\n",
+ 			new_hvs_state->core_clock_rate);
+ 
+-		clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
++		WARN_ON(clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate));
+ 
+ 		drm_dbg(dev, "Core clock actual rate: %lu Hz\n",
+ 			clk_get_rate(hvs->core_clk));
diff --git a/target/linux/bcm27xx/patches-5.15/950-0870-drm-vc4-Make-sure-we-don-t-end-up-with-a-core-clock-.patch b/target/linux/bcm27xx/patches-5.15/950-0870-drm-vc4-Make-sure-we-don-t-end-up-with-a-core-clock-.patch
new file mode 100644
index 0000000000..1ad6c9ebe4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0870-drm-vc4-Make-sure-we-don-t-end-up-with-a-core-clock-.patch
@@ -0,0 +1,58 @@
+From 9d71b0d4e30692d0d186352b494ef4e70234ca7c Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 25 Mar 2022 17:09:41 +0100
+Subject: [PATCH] drm/vc4: Make sure we don't end up with a core clock
+ too high
+
+Following the clock rate range improvements to the clock framework,
+trying to set a disjoint range on a clock will now result in an error.
+
+Thus, we can't set a minimum rate higher than the maximum reported by
+the firmware, or clk_set_min_rate() will fail.
+
+Thus we need to clamp the rate we are about to ask for to the maximum
+rate possible on that clock.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -354,6 +354,7 @@ static void vc4_atomic_commit_tail(struc
+ 	struct vc4_hvs_state *new_hvs_state;
+ 	struct drm_crtc *crtc;
+ 	struct vc4_hvs_state *old_hvs_state;
++	unsigned long max_clock_rate = clk_get_max_rate(hvs->core_clk);
+ 	unsigned int channel;
+ 	int i;
+ 
+@@ -397,8 +398,8 @@ static void vc4_atomic_commit_tail(struc
+ 	if (vc4->hvs && vc4->hvs->hvs5) {
+ 		unsigned long state_rate = max(old_hvs_state->core_clock_rate,
+ 					       new_hvs_state->core_clock_rate);
+-		unsigned long core_rate = max_t(unsigned long,
+-						500000000, state_rate);
++		unsigned long core_rate = clamp_t(unsigned long, state_rate,
++						  500000000, max_clock_rate);
+ 
+ 		WARN_ON(clk_set_min_rate(hvs->core_clk, core_rate));
+ 	}
+@@ -427,10 +428,13 @@ static void vc4_atomic_commit_tail(struc
+ 	drm_atomic_helper_cleanup_planes(dev, state);
+ 
+ 	if (vc4->hvs && vc4->hvs->hvs5) {
+-		drm_dbg(dev, "Running the core clock at %lu Hz\n",
+-			new_hvs_state->core_clock_rate);
++		unsigned long core_rate = min_t(unsigned long,
++					       max_clock_rate,
++					       new_hvs_state->core_clock_rate);
++
++		drm_dbg(dev, "Running the core clock at %lu Hz\n", core_rate);
+ 
+-		WARN_ON(clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate));
++		WARN_ON(clk_set_min_rate(hvs->core_clk, core_rate));
+ 
+ 		drm_dbg(dev, "Core clock actual rate: %lu Hz\n",
+ 			clk_get_rate(hvs->core_clk));
diff --git a/target/linux/bcm27xx/patches-5.15/950-0871-drm-vc4-kms-Use-maximum-FIFO-load-for-the-HVS-clock-.patch b/target/linux/bcm27xx/patches-5.15/950-0871-drm-vc4-kms-Use-maximum-FIFO-load-for-the-HVS-clock-.patch
new file mode 100644
index 0000000000..1ed4c9dec6
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0871-drm-vc4-kms-Use-maximum-FIFO-load-for-the-HVS-clock-.patch
@@ -0,0 +1,40 @@
+From 70887a91ef710cada7d43ac2ec93280bb53d540f Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 13 Apr 2022 16:22:49 +0200
+Subject: [PATCH] drm/vc4: kms: Use maximum FIFO load for the HVS clock
+ rate
+
+The core clock computation takes into account both the load due to the
+input (ie, planes) and its output (ie, encoders).
+
+However, while the input load needs to consider all the planes, and thus
+sum all of their associated loads, the output happens mostly in
+parallel.
+
+Therefore, we need to consider only the maximum of all the output loads,
+and not the sum like we were doing. This resulted in a clock rate way
+too high which could be discarded for being too high by the clock
+framework.
+
+Since recent changes, the clock framework will even downright reject it,
+leading to a core clock being too low for its current needs.
+
+Fixes: 16e101051f32 ("drm/vc4: Increase the core clock based on HVS load")
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -939,7 +939,9 @@ vc4_core_clock_atomic_check(struct drm_a
+ 			continue;
+ 
+ 		num_outputs++;
+-		cob_rate += hvs_new_state->fifo_state[i].fifo_load;
++		cob_rate = max_t(unsigned long,
++				 hvs_new_state->fifo_state[i].fifo_load,
++				 cob_rate);
+ 	}
+ 
+ 	pixel_rate = load_state->hvs_load;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0872-rpivid-Use-clk_get_max_rate.patch b/target/linux/bcm27xx/patches-5.15/950-0872-rpivid-Use-clk_get_max_rate.patch
new file mode 100644
index 0000000000..62146098c3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0872-rpivid-Use-clk_get_max_rate.patch
@@ -0,0 +1,26 @@
+From 041b014362c7fdcf82972b738708f3d2c1aef23e Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 15 Apr 2022 15:26:07 +0200
+Subject: [PATCH] rpivid: Use clk_get_max_rate()
+
+The driver was using clk_round_rate() to figure out the maximum clock
+rate that was allowed for the HEVC clock.
+
+Since we have a function to return it directly now, let's use it.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/staging/media/rpivid/rpivid_video.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/staging/media/rpivid/rpivid_video.c
++++ b/drivers/staging/media/rpivid/rpivid_video.c
+@@ -558,7 +558,7 @@ static int start_clock(struct rpivid_dev
+ 	long max_hevc_clock;
+ 	int rv;
+ 
+-	max_hevc_clock = clk_round_rate(dev->clock, ULONG_MAX);
++	max_hevc_clock = clk_get_max_rate(dev->clock);
+ 
+ 	rv = clk_set_min_rate(dev->clock, max_hevc_clock);
+ 	if (rv) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0873-clk-bcm2835-use-subsys_initcall-for-the-clock-driver.patch b/target/linux/bcm27xx/patches-5.15/950-0873-clk-bcm2835-use-subsys_initcall-for-the-clock-driver.patch
new file mode 100644
index 0000000000..6ab0df5954
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0873-clk-bcm2835-use-subsys_initcall-for-the-clock-driver.patch
@@ -0,0 +1,28 @@
+From e0b6ece7d54eba3187d15b357c94973fecdb4e52 Mon Sep 17 00:00:00 2001
+From: Alberto Solavagione <albertosolavagione30@gmail.com>
+Date: Wed, 20 Apr 2022 17:15:42 +0200
+Subject: [PATCH] clk-bcm2835: use subsys_initcall for the clock driver
+ when IMA is enabled
+
+Co-authored-by: Davide Scovotto <scovottodavide@gmail.com>
+Co-developed-by: Davide Scovotto <scovottodavide@gmail.com>
+Signed-off-by: Davide Scovotto <scovottodavide@gmail.com>
+Signed-off-by: Alberto Solavagione <albertosolavagione30@gmail.com>
+---
+ drivers/clk/bcm/clk-bcm2835.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/clk/bcm/clk-bcm2835.c
++++ b/drivers/clk/bcm/clk-bcm2835.c
+@@ -2408,7 +2408,11 @@ static int __init __bcm2835_clk_driver_i
+ {
+ 	return platform_driver_register(&bcm2835_clk_driver);
+ }
++#ifdef CONFIG_IMA
++subsys_initcall(__bcm2835_clk_driver_init);
++#else
+ postcore_initcall(__bcm2835_clk_driver_init);
++#endif
+ 
+ MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
+ MODULE_DESCRIPTION("BCM2835 clock driver");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0874-tpm_tis_spi_main-Force-probe-routine-to-run-synchron.patch b/target/linux/bcm27xx/patches-5.15/950-0874-tpm_tis_spi_main-Force-probe-routine-to-run-synchron.patch
new file mode 100644
index 0000000000..d61a034701
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0874-tpm_tis_spi_main-Force-probe-routine-to-run-synchron.patch
@@ -0,0 +1,28 @@
+From a32b7559eb007f4e361fae63517e3e5c2ee1ef72 Mon Sep 17 00:00:00 2001
+From: Scovotto Davide <scovottodavide@gmail.com>
+Date: Wed, 20 Apr 2022 17:22:17 +0200
+Subject: [PATCH] tpm_tis_spi_main: Force probe routine to run
+ synchronously with driver and device registration when IMA is enabled
+
+Co-authored-by: Alberto Solavagione <albertosolavagione30@gmail.com>
+Co-developed-by: Alberto Solavagione <albertosolavagione30@gmail.com>
+Signed-off-by: Alberto Solavagione <albertosolavagione30@gmail.com>
+Signed-off-by: Davide Scovotto <scovottodavide@gmail.com>
+---
+ drivers/char/tpm/tpm_tis_spi_main.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/char/tpm/tpm_tis_spi_main.c
++++ b/drivers/char/tpm/tpm_tis_spi_main.c
+@@ -294,7 +294,11 @@ static struct spi_driver tpm_tis_spi_dri
+ 		.pm = &tpm_tis_pm,
+ 		.of_match_table = of_match_ptr(of_tis_spi_match),
+ 		.acpi_match_table = ACPI_PTR(acpi_tis_spi_match),
++#ifdef CONFIG_IMA
++		.probe_type = PROBE_FORCE_SYNCHRONOUS,
++#else
+ 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
++#endif
+ 	},
+ 	.probe = tpm_tis_spi_driver_probe,
+ 	.remove = tpm_tis_spi_remove,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0875-overlays-Add-drm-parameter-to-pitft28-resistive.patch b/target/linux/bcm27xx/patches-5.15/950-0875-overlays-Add-drm-parameter-to-pitft28-resistive.patch
new file mode 100644
index 0000000000..4d8c26898c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0875-overlays-Add-drm-parameter-to-pitft28-resistive.patch
@@ -0,0 +1,43 @@
+From 7e3e327c966a6112cb30da72892042d7a03ffdc8 Mon Sep 17 00:00:00 2001
+From: andrum99 <97977513+andrum99@users.noreply.github.com>
+Date: Sun, 24 Apr 2022 17:23:23 +0100
+Subject: [PATCH] overlays: Add "drm" parameter to pitft28-resistive
+
+Add "drm" parameter to the pitft28-resistive, forcing use of the
+mi0283qt DRM driver.
+---
+ arch/arm/boot/dts/overlays/README                        | 4 ++++
+ arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts | 3 ++-
+ 2 files changed, 6 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2785,6 +2785,10 @@ Params: speed                   Display
+ 
+         debug                   Debug output level {0-7}
+ 
++        drm                     Force the use of the mi0283qt DRM driver (by
++                                default the ili9340 framebuffer driver will
++                                be used in preference if available)
++
+ 
+ Name:   pitft35-resistive
+ Info:   Adafruit PiTFT 3.5" resistive touch screen
+--- a/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
+@@ -49,7 +49,7 @@
+ 			#size-cells = <0>;
+ 
+ 			pitft: pitft@0{
+-				compatible = "ilitek,ili9340";
++				compatible = "ilitek,ili9340", "multi-inno,mi0283qt";
+ 				reg = <0>;
+ 				pinctrl-names = "default";
+ 				pinctrl-0 = <&pitft_pins>;
+@@ -115,5 +115,6 @@
+ 		rotate =  <&pitft>,"rotate:0";
+ 		fps =     <&pitft>,"fps:0";
+ 		debug =   <&pitft>,"debug:0";
++		drm =     <&pitft>,"compatible=multi-inno,mi0283qt";
+ 	};
+ };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0876-ARM-dts-Add-i2c0mux-node-to-Model-B-rev-1.patch b/target/linux/bcm27xx/patches-5.15/950-0876-ARM-dts-Add-i2c0mux-node-to-Model-B-rev-1.patch
new file mode 100644
index 0000000000..9eb9c8c4e1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0876-ARM-dts-Add-i2c0mux-node-to-Model-B-rev-1.patch
@@ -0,0 +1,28 @@
+From 3b6b57200f089c75b7434d61f9037f622b99c115 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 19 Apr 2022 19:57:29 +0100
+Subject: [PATCH] ARM: dts: Add i2c0mux node to Model B rev 1
+
+The lack of an i2c0mux label prevents the i2c-rtc overlay from
+being applied.
+
+See: https://github.com/raspberrypi/linux/issues/4999
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
+@@ -154,6 +154,10 @@ i2c_csi_dsi: &i2c1 {
+ 		i2c0 = &i2c0;
+ 	};
+ 
++	/* Provide an i2c0mux label to avoid undefined symbols in overlays */
++	i2c0mux: i2c0mux {
++	};
++
+ 	__overrides__ {
+ 		i2c0 = <&i2c0>, "status";
+ 	};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0877-overlays-Fix-pitft28-35-resistive-rotate-params.patch b/target/linux/bcm27xx/patches-5.15/950-0877-overlays-Fix-pitft28-35-resistive-rotate-params.patch
new file mode 100644
index 0000000000..0b1b0f6ab7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0877-overlays-Fix-pitft28-35-resistive-rotate-params.patch
@@ -0,0 +1,40 @@
+From 3489079cbec718e3efcf61bad4df580c659b3af0 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Sun, 24 Apr 2022 20:25:34 +0100
+Subject: [PATCH] overlays: Fix pitft28/35-resistive rotate params
+
+The drm drivers uses the property name "rotation", not "rotate" as used
+by the fbtft drivers. Fix suggested by notro.
+
+See: https://forums.raspberrypi.com/viewtopic.php?p=1996785#p1996785
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts | 3 ++-
+ arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts | 3 ++-
+ 2 files changed, 4 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
+@@ -112,7 +112,8 @@
+ 
+ 	__overrides__ {
+ 		speed =   <&pitft>,"spi-max-frequency:0";
+-		rotate =  <&pitft>,"rotate:0";
++		rotate =  <&pitft>,"rotate:0", /* fbtft */
++			  <&pitft>,"rotation:0"; /* drm */
+ 		fps =     <&pitft>,"fps:0";
+ 		debug =   <&pitft>,"debug:0";
+ 		drm =     <&pitft>,"compatible=multi-inno,mi0283qt";
+--- a/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
++++ b/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
+@@ -112,7 +112,8 @@
+ 
+ 	__overrides__ {
+ 		speed =   <&pitft>,"spi-max-frequency:0";
+-		rotate =  <&pitft>,"rotate:0";
++		rotate =  <&pitft>,"rotate:0", /* fbtft */
++			  <&pitft>,"rotation:0"; /* drm */
+ 		fps =     <&pitft>,"fps:0";
+ 		debug =   <&pitft>,"debug:0";
+ 		drm =     <&pitft>,"compatible=adafruit,yx350hv15",
diff --git a/target/linux/bcm27xx/patches-5.15/950-0878-ARM-dts-bcm2835-Switch-HSM-clock-to-firmware.patch b/target/linux/bcm27xx/patches-5.15/950-0878-ARM-dts-bcm2835-Switch-HSM-clock-to-firmware.patch
new file mode 100644
index 0000000000..465fdea32e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0878-ARM-dts-bcm2835-Switch-HSM-clock-to-firmware.patch
@@ -0,0 +1,35 @@
+From fb31b2f3ddb36a98cbb50ab07a5541d553e72e16 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 25 Apr 2022 17:45:16 +0200
+Subject: [PATCH] ARM: dts: bcm2835: Switch HSM clock to firmware
+
+When the bootloader boots without a display connected to the
+HDMI connector, it won't initialize the HSM clock.
+
+Then, when Linux boots, the default parent fetched by the clock
+framework will be the first parent for the HSM clock, which is "gnd".
+
+That clock is never registered, leading to the HSM clock being orphaned,
+which leads to other issues with the recent clock range handling.
+
+It's not clear what the proper solution would be, but the firmware
+clocks driver doesn't have that parenting issue and the clock rate is
+properly initialized for this clock whenever it hasn't been set by the
+bootloader.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ arch/arm/boot/dts/bcm2835-common.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/bcm2835-common.dtsi
++++ b/arch/arm/boot/dts/bcm2835-common.dtsi
+@@ -129,7 +129,7 @@
+ 			interrupts = <2 8>, <2 9>;
+ 			ddc = <&i2c2>;
+ 			clocks = <&firmware_clocks 9>,
+-				 <&clocks BCM2835_CLOCK_HSM>;
++				 <&firmware_clocks 13>;
+ 			clock-names = "pixel", "hdmi";
+ 			dmas = <&dma (17|(1<<27)|(1<<24))>;
+ 			dma-names = "audio-rx";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0879-drm-vc4_kms-Protect-hvs-dereference-on-fkms.patch b/target/linux/bcm27xx/patches-5.15/950-0879-drm-vc4_kms-Protect-hvs-dereference-on-fkms.patch
new file mode 100644
index 0000000000..12e6318e53
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0879-drm-vc4_kms-Protect-hvs-dereference-on-fkms.patch
@@ -0,0 +1,23 @@
+From 02e41ddac8a960df7defaa377c1d3d981ac0a652 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Wed, 27 Apr 2022 14:45:35 +0100
+Subject: [PATCH] drm/vc4_kms: Protect hvs dereference on fkms
+
+fkms has a null hvs pointer so this crashes. Protect against it
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -354,7 +354,7 @@ static void vc4_atomic_commit_tail(struc
+ 	struct vc4_hvs_state *new_hvs_state;
+ 	struct drm_crtc *crtc;
+ 	struct vc4_hvs_state *old_hvs_state;
+-	unsigned long max_clock_rate = clk_get_max_rate(hvs->core_clk);
++	unsigned long max_clock_rate = hvs ? clk_get_max_rate(hvs->core_clk) : 0;
+ 	unsigned int channel;
+ 	int i;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0880-Revert-fbdev-Fix-unregistering-of-framebuffers-witho.patch b/target/linux/bcm27xx/patches-5.15/950-0880-Revert-fbdev-Fix-unregistering-of-framebuffers-witho.patch
new file mode 100644
index 0000000000..e97eb8a31f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0880-Revert-fbdev-Fix-unregistering-of-framebuffers-witho.patch
@@ -0,0 +1,29 @@
+From e2d375bf9ec7803e55e6885ce09e9c497a956114 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 28 Apr 2022 16:11:20 +0100
+Subject: [PATCH] Revert "fbdev: Fix unregistering of framebuffers
+ without device"
+
+This reverts commit 2388f826cdc9af2651991adc0feb79de9bdf2232.
+---
+ drivers/video/fbdev/core/fbmem.c | 9 +--------
+ 1 file changed, 1 insertion(+), 8 deletions(-)
+
+--- a/drivers/video/fbdev/core/fbmem.c
++++ b/drivers/video/fbdev/core/fbmem.c
+@@ -1619,14 +1619,7 @@ static void do_remove_conflicting_frameb
+ 			 * If it's not a platform device, at least print a warning. A
+ 			 * fix would add code to remove the device from the system.
+ 			 */
+-			if (!device) {
+-				/* TODO: Represent each OF framebuffer as its own
+-				 * device in the device hierarchy. For now, offb
+-				 * doesn't have such a device, so unregister the
+-				 * framebuffer as before without warning.
+-				 */
+-				do_unregister_framebuffer(registered_fb[i]);
+-			} else if (dev_is_platform(device)) {
++			if (dev_is_platform(device)) {
+ 				registered_fb[i]->forced_out = true;
+ 				platform_device_unregister(to_platform_device(device));
+ 			} else {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0881-Revert-fbdev-Hot-unplug-firmware-fb-devices-on-force.patch b/target/linux/bcm27xx/patches-5.15/950-0881-Revert-fbdev-Hot-unplug-firmware-fb-devices-on-force.patch
new file mode 100644
index 0000000000..b6ae1dc214
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0881-Revert-fbdev-Hot-unplug-firmware-fb-devices-on-force.patch
@@ -0,0 +1,86 @@
+From 4899d3181465e16d548af03b7825c4b06e0f0e44 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 28 Apr 2022 16:11:34 +0100
+Subject: [PATCH] Revert "fbdev: Hot-unplug firmware fb devices on
+ forced removal"
+
+This reverts commit c894ac44786cfed383a6c6b20c1bfb12eb96018a.
+---
+ drivers/video/fbdev/core/fbmem.c | 29 +++--------------------------
+ include/linux/fb.h               |  1 -
+ 2 files changed, 3 insertions(+), 27 deletions(-)
+
+--- a/drivers/video/fbdev/core/fbmem.c
++++ b/drivers/video/fbdev/core/fbmem.c
+@@ -25,7 +25,6 @@
+ #include <linux/init.h>
+ #include <linux/linux_logo.h>
+ #include <linux/proc_fs.h>
+-#include <linux/platform_device.h>
+ #include <linux/seq_file.h>
+ #include <linux/console.h>
+ #include <linux/kmod.h>
+@@ -1596,36 +1595,18 @@ static void do_remove_conflicting_frameb
+ 	/* check all firmware fbs and kick off if the base addr overlaps */
+ 	for_each_registered_fb(i) {
+ 		struct apertures_struct *gen_aper;
+-		struct device *device;
+ 
+ 		if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE))
+ 			continue;
+ 
+ 		gen_aper = registered_fb[i]->apertures;
+-		device = registered_fb[i]->device;
+ 		if (fb_do_apertures_overlap(gen_aper, a) ||
+ 			(primary && gen_aper && gen_aper->count &&
+ 			 gen_aper->ranges[0].base == VGA_FB_PHYS)) {
+ 
+ 			printk(KERN_INFO "fb%d: switching to %s from %s\n",
+ 			       i, name, registered_fb[i]->fix.id);
+-
+-			/*
+-			 * If we kick-out a firmware driver, we also want to remove
+-			 * the underlying platform device, such as simple-framebuffer,
+-			 * VESA, EFI, etc. A native driver will then be able to
+-			 * allocate the memory range.
+-			 *
+-			 * If it's not a platform device, at least print a warning. A
+-			 * fix would add code to remove the device from the system.
+-			 */
+-			if (dev_is_platform(device)) {
+-				registered_fb[i]->forced_out = true;
+-				platform_device_unregister(to_platform_device(device));
+-			} else {
+-				pr_warn("fb%d: cannot remove device\n", i);
+-				do_unregister_framebuffer(registered_fb[i]);
+-			}
++			do_unregister_framebuffer(registered_fb[i]);
+ 		}
+ 	}
+ }
+@@ -1952,13 +1933,9 @@ EXPORT_SYMBOL(register_framebuffer);
+ void
+ unregister_framebuffer(struct fb_info *fb_info)
+ {
+-	bool forced_out = fb_info->forced_out;
+-
+-	if (!forced_out)
+-		mutex_lock(&registration_lock);
++	mutex_lock(&registration_lock);
+ 	do_unregister_framebuffer(fb_info);
+-	if (!forced_out)
+-		mutex_unlock(&registration_lock);
++	mutex_unlock(&registration_lock);
+ }
+ EXPORT_SYMBOL(unregister_framebuffer);
+ 
+--- a/include/linux/fb.h
++++ b/include/linux/fb.h
+@@ -502,7 +502,6 @@ struct fb_info {
+ 	} *apertures;
+ 
+ 	bool skip_vt_switch; /* no VT switch on suspend/resume required */
+-	bool forced_out; /* set when being removed by another driver */
+ };
+ 
+ static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0882-staging-vchiq_arm-Add-log_level-module-params.patch b/target/linux/bcm27xx/patches-5.15/950-0882-staging-vchiq_arm-Add-log_level-module-params.patch
new file mode 100644
index 0000000000..b5438aff76
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0882-staging-vchiq_arm-Add-log_level-module-params.patch
@@ -0,0 +1,27 @@
+From bcaeba508157200dc580607175e8f2fed65fd181 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Fri, 29 Apr 2022 09:19:10 +0100
+Subject: [PATCH] staging: vchiq_arm: Add log_level module params
+
+Add module parameters to control the logging levels for the various
+vchiq logging categories.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ .../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c    | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -64,6 +64,11 @@
+ /* Run time control of log level, based on KERN_XXX level. */
+ int vchiq_arm_log_level = VCHIQ_LOG_DEFAULT;
+ int vchiq_susp_log_level = VCHIQ_LOG_ERROR;
++module_param_named(arm_log_level, vchiq_arm_log_level, int, 0644);
++module_param_named(susp_log_level, vchiq_susp_log_level, int, 0644);
++module_param_named(core_log_level, vchiq_core_log_level, int, 0644);
++module_param_named(core_msg_log_level, vchiq_core_msg_log_level, int, 0644);
++module_param_named(sync_log_level, vchiq_sync_log_level, int, 0644);
+ 
+ DEFINE_SPINLOCK(msg_queue_spinlock);
+ struct vchiq_state g_state;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0883-dt-bindings-vendor-prefixes-Add-Arducam.patch b/target/linux/bcm27xx/patches-5.15/950-0883-dt-bindings-vendor-prefixes-Add-Arducam.patch
new file mode 100644
index 0000000000..1555fda910
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0883-dt-bindings-vendor-prefixes-Add-Arducam.patch
@@ -0,0 +1,23 @@
+From e98792b15a06ef7a54792be53e1f401a9c3e2696 Mon Sep 17 00:00:00 2001
+From: Lee Jackson <info@arducam.com>
+Date: Thu, 21 Apr 2022 14:14:29 +0800
+Subject: [PATCH] dt-bindings: vendor-prefixes: Add Arducam
+
+Add vendor prefix for Arducam (https://arducam.com).
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
++++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
+@@ -119,6 +119,8 @@ patternProperties:
+     description: arcx Inc. / Archronix Inc.
+   "^aries,.*":
+     description: Aries Embedded GmbH
++  "^arducam,.*":
++    description: Arducam Technology co., Ltd.
+   "^arm,.*":
+     description: ARM Ltd.
+   "^armadeus,.*":
diff --git a/target/linux/bcm27xx/patches-5.15/950-0884-media-dt-bindings-media-i2c-Add-Arducam-Pivariety-Se.patch b/target/linux/bcm27xx/patches-5.15/950-0884-media-dt-bindings-media-i2c-Add-Arducam-Pivariety-Se.patch
new file mode 100644
index 0000000000..1c1dbb3dde
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0884-media-dt-bindings-media-i2c-Add-Arducam-Pivariety-Se.patch
@@ -0,0 +1,148 @@
+From 2fec5d7dfa90da26fe792110131983ea72ab5c8e Mon Sep 17 00:00:00 2001
+From: Lee Jackson <info@arducam.com>
+Date: Thu, 21 Apr 2022 14:18:44 +0800
+Subject: [PATCH] media: dt-bindings: media: i2c: Add Arducam Pivariety
+ Series CMOS sensor binding
+
+Add YAML device tree binding for Arducam Pivariety CMOS image sensor, and
+the relevant MAINTAINERS entries.
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ .../bindings/media/i2c/arducam-pivariety.yaml | 112 ++++++++++++++++++
+ MAINTAINERS                                   |   8 ++
+ 2 files changed, 120 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/media/i2c/arducam-pivariety.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/media/i2c/arducam-pivariety.yaml
+@@ -0,0 +1,112 @@
++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/media/i2c/arducam-pivariety.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Arducam Pivariety Series CMOS Digital Image Sensor
++
++maintainers:
++  - Lee Jackson <info@arducam.com>
++
++description: |-
++  Arducam Pivariety series cameras make compatibility layers for various CMOS
++  sensors and provide a unified command interface. It is programmable through
++  I2C interface. The I2C address is fixed to 0x0C. Image data is sent through
++  MIPI CSI-2, which is configured as either 1, 2 or 4 data lanes.
++
++properties:
++  compatible:
++    const: arducam,arducam-pivariety
++
++  reg:
++    description: I2C device address
++    maxItems: 1
++
++  clocks:
++    maxItems: 1
++
++  VDIG-supply:
++    description:
++      Digital I/O voltage supply, 1.05 volts
++
++  VANA-supply:
++    description:
++      Analog voltage supply, 2.8 volts
++
++  VDDL-supply:
++    description:
++      Digital core voltage supply, 1.8 volts
++
++  reset-gpios:
++    description: |-
++      Reference to the GPIO connected to the xclr pin, if any.
++      Must be released (set high) after all supplies and INCK are applied.
++
++  # See ../video-interfaces.txt for more details
++  port:
++    type: object
++    properties:
++      endpoint:
++        type: object
++        properties:
++          data-lanes:
++            description: |-
++              The sensor supports either two-lane, or four-lane operation.
++              For two-lane operation the property must be set to <1 2>.
++            items:
++              - const: 1
++              - const: 2
++
++          clock-noncontinuous:
++            type: boolean
++            description: |-
++              MIPI CSI-2 clock is non-continuous if this property is present,
++              otherwise it's continuous.
++
++          link-frequencies:
++            allOf:
++              - $ref: /schemas/types.yaml#/definitions/uint64-array
++            description:
++              Allowed data bus frequencies.
++
++        required:
++          - link-frequencies
++
++required:
++  - compatible
++  - reg
++  - clocks
++  - VANA-supply
++  - VDIG-supply
++  - VDDL-supply
++  - port
++
++additionalProperties: false
++
++examples:
++  - |
++    i2c0 {
++        #address-cells = <1>;
++        #size-cells = <0>;
++
++        arducam_pivariety: sensor@0c {
++            compatible = "arducam,arducam-pivariety";
++            reg = <0x0c>;
++            clocks = <&arducam_pivariety_clk>;
++            VANA-supply = <&arducam_pivariety_vana>;   /* 2.8v */
++            VDIG-supply = <&arducam_pivariety_vdig>;   /* 1.05v */
++            VDDL-supply = <&arducam_pivariety_vddl>;   /* 1.8v */
++
++            port {
++                arducam_pivariety_0: endpoint {
++                    remote-endpoint = <&csi1_ep>;
++                    data-lanes = <1 2>;
++                    clock-noncontinuous;
++                    link-frequencies = /bits/ 64 <493500000>;
++                };
++            };
++        };
++    };
++
++...
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -1386,6 +1386,14 @@ S:	Maintained
+ F:	drivers/net/arcnet/
+ F:	include/uapi/linux/if_arcnet.h
+ 
++ARDUCAM PIVARIETY SENSOR DRIVER
++M:	Arducam Kernel Maintenance <info@arducam.com>
++L:	linux-media@vger.kernel.org
++S:	Maintained
++T:	git git://linuxtv.org/media_tree.git
++F:	Documentation/devicetree/bindings/media/i2c/arducam-pivariety.yaml
++F:	drivers/media/i2c/arducam-pivariety.c
++
+ ARM ARCHITECTED TIMER DRIVER
+ M:	Mark Rutland <mark.rutland@arm.com>
+ M:	Marc Zyngier <maz@kernel.org>
diff --git a/target/linux/bcm27xx/patches-5.15/950-0885-media-i2c-Add-driver-of-Arducam-Pivariety-series-cam.patch b/target/linux/bcm27xx/patches-5.15/950-0885-media-i2c-Add-driver-of-Arducam-Pivariety-series-cam.patch
new file mode 100644
index 0000000000..814d32a56d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0885-media-i2c-Add-driver-of-Arducam-Pivariety-series-cam.patch
@@ -0,0 +1,1630 @@
+From 94203b7e5bbb814c1d18fc5d95fea18b66041c03 Mon Sep 17 00:00:00 2001
+From: Lee Jackson <info@arducam.com>
+Date: Thu, 14 Apr 2022 17:31:01 +0800
+Subject: [PATCH] media: i2c: Add driver of Arducam Pivariety series
+ camera
+
+Add a driver for the Arducam Pivariety series CSI2 camera sensor.
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ drivers/media/i2c/Kconfig             |   11 +
+ drivers/media/i2c/Makefile            |    1 +
+ drivers/media/i2c/arducam-pivariety.c | 1469 +++++++++++++++++++++++++
+ drivers/media/i2c/arducam-pivariety.h |  107 ++
+ 4 files changed, 1588 insertions(+)
+ create mode 100644 drivers/media/i2c/arducam-pivariety.c
+ create mode 100644 drivers/media/i2c/arducam-pivariety.h
+
+--- a/drivers/media/i2c/Kconfig
++++ b/drivers/media/i2c/Kconfig
+@@ -730,6 +730,17 @@ config VIDEO_APTINA_PLL
+ config VIDEO_CCS_PLL
+ 	tristate
+ 
++config VIDEO_ARDUCAM_PIVARIETY
++	tristate "Arducam Pivariety sensor support"
++	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
++	depends on MEDIA_CAMERA_SUPPORT
++	help
++	  This is a Video4Linux2 sensor driver for the Arducam
++	  Pivariety camera series.
++
++	  To compile this driver as a module, choose M here: the
++	  module will be called arducam-pivariety.
++
+ config VIDEO_HI556
+ 	tristate "Hynix Hi-556 sensor support"
+ 	depends on I2C && VIDEO_V4L2
+--- a/drivers/media/i2c/Makefile
++++ b/drivers/media/i2c/Makefile
+@@ -7,6 +7,7 @@ obj-$(CONFIG_VIDEO_ET8EK8)	+= et8ek8/
+ obj-$(CONFIG_VIDEO_CX25840) += cx25840/
+ obj-$(CONFIG_VIDEO_M5MOLS)	+= m5mols/
+ 
++obj-$(CONFIG_VIDEO_ARDUCAM_PIVARIETY) += arducam-pivariety.o
+ obj-$(CONFIG_VIDEO_APTINA_PLL) += aptina-pll.o
+ obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o
+ obj-$(CONFIG_VIDEO_TDA7432) += tda7432.o
+--- /dev/null
++++ b/drivers/media/i2c/arducam-pivariety.c
+@@ -0,0 +1,1469 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * A V4L2 driver for Arducam Pivariety Cameras
++ * Copyright (C) 2022 Arducam Technology co., Ltd.
++ *
++ * Based on Sony IMX219 camera driver
++ * Copyright (C) 2019, Raspberry Pi (Trading) Ltd
++ *
++ * I2C read and write method is taken from the OV9281 driver
++ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
++ */
++
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/gpio/consumer.h>
++#include <linux/i2c.h>
++#include <linux/module.h>
++#include <linux/pm_runtime.h>
++#include <linux/regulator/consumer.h>
++#include <media/v4l2-ctrls.h>
++#include <media/v4l2-device.h>
++#include <media/v4l2-event.h>
++#include <media/v4l2-fwnode.h>
++#include "arducam-pivariety.h"
++
++static int debug;
++module_param(debug, int, 0644);
++
++/* regulator supplies */
++static const char * const pivariety_supply_name[] = {
++	/* Supplies can be enabled in any order */
++	"VANA",  /* Analog (2.8V) supply */
++	"VDIG",  /* Digital Core (1.8V) supply */
++	"VDDL",  /* IF (1.2V) supply */
++};
++
++/* The supported raw formats. */
++static const u32 codes[] = {
++	MEDIA_BUS_FMT_SBGGR8_1X8,
++	MEDIA_BUS_FMT_SGBRG8_1X8,
++	MEDIA_BUS_FMT_SGRBG8_1X8,
++	MEDIA_BUS_FMT_SRGGB8_1X8,
++	MEDIA_BUS_FMT_Y8_1X8,
++
++	MEDIA_BUS_FMT_SBGGR10_1X10,
++	MEDIA_BUS_FMT_SGBRG10_1X10,
++	MEDIA_BUS_FMT_SGRBG10_1X10,
++	MEDIA_BUS_FMT_SRGGB10_1X10,
++	MEDIA_BUS_FMT_Y10_1X10,
++
++	MEDIA_BUS_FMT_SBGGR12_1X12,
++	MEDIA_BUS_FMT_SGBRG12_1X12,
++	MEDIA_BUS_FMT_SGRBG12_1X12,
++	MEDIA_BUS_FMT_SRGGB12_1X12,
++	MEDIA_BUS_FMT_Y12_1X12,
++};
++
++#define ARDUCAM_NUM_SUPPLIES ARRAY_SIZE(pivariety_supply_name)
++
++#define ARDUCAM_XCLR_MIN_DELAY_US	10000
++#define ARDUCAM_XCLR_DELAY_RANGE_US	1000
++
++#define MAX_CTRLS 32
++
++struct pivariety {
++	struct v4l2_subdev sd;
++	struct media_pad pad;
++
++	struct v4l2_fwnode_bus_mipi_csi2 bus;
++	struct clk *xclk;
++	u32 xclk_freq;
++
++	struct gpio_desc *reset_gpio;
++	struct regulator_bulk_data supplies[ARDUCAM_NUM_SUPPLIES];
++
++	struct arducam_format *supported_formats;
++	int num_supported_formats;
++	int current_format_idx;
++	int current_resolution_idx;
++	int lanes;
++	int bayer_order_volatile;
++	bool wait_until_free;
++
++	struct v4l2_ctrl_handler ctrl_handler;
++	struct v4l2_ctrl *ctrls[MAX_CTRLS];
++	/* V4L2 Controls */
++	struct v4l2_ctrl *vflip;
++	struct v4l2_ctrl *hflip;
++
++	struct v4l2_rect crop;
++	/*
++	 * Mutex for serialized access:
++	 * Protect sensor module set pad format and start/stop streaming safely.
++	 */
++	struct mutex mutex;
++
++	/* Streaming on/off */
++	bool streaming;
++};
++
++static inline struct pivariety *to_pivariety(struct v4l2_subdev *_sd)
++{
++	return container_of(_sd, struct pivariety, sd);
++}
++
++/* Write registers up to 4 at a time */
++static int pivariety_write_reg(struct i2c_client *client, u16 reg, u32 val)
++{
++	unsigned int len = sizeof(u32);
++	u32 buf_i, val_i = 0;
++	u8 buf[6];
++	u8 *val_p;
++	__be32 val_be;
++
++	buf[0] = reg >> 8;
++	buf[1] = reg & 0xff;
++
++	val_be = cpu_to_be32(val);
++	val_p = (u8 *)&val_be;
++	buf_i = 2;
++
++	while (val_i < 4)
++		buf[buf_i++] = val_p[val_i++];
++
++	if (i2c_master_send(client, buf, len + 2) != len + 2)
++		return -EIO;
++
++	return 0;
++}
++
++/* Read registers up to 4 at a time */
++static int pivariety_read_reg(struct i2c_client *client, u16 reg, u32 *val)
++{
++	struct i2c_msg msgs[2];
++	unsigned int len = sizeof(u32);
++	u8 *data_be_p;
++	__be32 data_be = 0;
++	__be16 reg_addr_be = cpu_to_be16(reg);
++	int ret;
++
++	data_be_p = (u8 *)&data_be;
++	/* Write register address */
++	msgs[0].addr = client->addr;
++	msgs[0].flags = 0;
++	msgs[0].len = 2;
++	msgs[0].buf = (u8 *)&reg_addr_be;
++
++	/* Read data from register */
++	msgs[1].addr = client->addr;
++	msgs[1].flags = I2C_M_RD;
++	msgs[1].len = len;
++	msgs[1].buf = data_be_p;
++
++	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
++	if (ret != ARRAY_SIZE(msgs))
++		return -EIO;
++
++	*val = be32_to_cpu(data_be);
++
++	return 0;
++}
++
++static int
++pivariety_read(struct pivariety *pivariety, u16 addr, u32 *value)
++{
++	struct v4l2_subdev *sd = &pivariety->sd;
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	int ret, count = 0;
++
++	while (count++ < I2C_READ_RETRY_COUNT) {
++		ret = pivariety_read_reg(client, addr, value);
++		if (!ret) {
++			v4l2_dbg(2, debug, sd, "%s: 0x%02x 0x%04x\n",
++				 __func__, addr, *value);
++			return ret;
++		}
++	}
++
++	v4l2_err(sd, "%s: Reading register 0x%02x failed\n",
++		 __func__, addr);
++
++	return ret;
++}
++
++static int pivariety_write(struct pivariety *pivariety, u16 addr, u32 value)
++{
++	struct v4l2_subdev *sd = &pivariety->sd;
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	int ret, count = 0;
++
++	while (count++ < I2C_WRITE_RETRY_COUNT) {
++		ret = pivariety_write_reg(client, addr, value);
++		if (!ret)
++			return ret;
++	}
++
++	v4l2_err(sd, "%s: Write 0x%04x to register 0x%02x failed\n",
++		 __func__, value, addr);
++
++	return ret;
++}
++
++static int wait_for_free(struct pivariety *pivariety, int interval)
++{
++	u32 value;
++	u32 count = 0;
++
++	while (count++ < (1000 / interval)) {
++		int ret = pivariety_read(pivariety, SYSTEM_IDLE_REG, &value);
++
++		if (!ret && !value)
++			break;
++		msleep(interval);
++	}
++
++	v4l2_dbg(2, debug, &pivariety->sd, "%s: End wait, Count: %d.\n",
++		 __func__, count);
++
++	return 0;
++}
++
++static int is_raw(int pixformat)
++{
++	return pixformat >= 0x28 && pixformat <= 0x2D;
++}
++
++static u32 bayer_to_mbus_code(int data_type, int bayer_order)
++{
++	const u32 depth8[] = {
++		MEDIA_BUS_FMT_SBGGR8_1X8,
++		MEDIA_BUS_FMT_SGBRG8_1X8,
++		MEDIA_BUS_FMT_SGRBG8_1X8,
++		MEDIA_BUS_FMT_SRGGB8_1X8,
++		MEDIA_BUS_FMT_Y8_1X8,
++	};
++
++	const u32 depth10[] = {
++		MEDIA_BUS_FMT_SBGGR10_1X10,
++		MEDIA_BUS_FMT_SGBRG10_1X10,
++		MEDIA_BUS_FMT_SGRBG10_1X10,
++		MEDIA_BUS_FMT_SRGGB10_1X10,
++		MEDIA_BUS_FMT_Y10_1X10,
++	};
++
++	const u32 depth12[] = {
++		MEDIA_BUS_FMT_SBGGR12_1X12,
++		MEDIA_BUS_FMT_SGBRG12_1X12,
++		MEDIA_BUS_FMT_SGRBG12_1X12,
++		MEDIA_BUS_FMT_SRGGB12_1X12,
++		MEDIA_BUS_FMT_Y12_1X12,
++	};
++
++	if (bayer_order < 0 || bayer_order > 4)
++		return 0;
++
++	switch (data_type) {
++	case IMAGE_DT_RAW8:
++		return depth8[bayer_order];
++	case IMAGE_DT_RAW10:
++		return depth10[bayer_order];
++	case IMAGE_DT_RAW12:
++		return depth12[bayer_order];
++	}
++
++	return 0;
++}
++
++static u32 yuv422_to_mbus_code(int data_type, int order)
++{
++	const u32 depth8[] = {
++		MEDIA_BUS_FMT_YUYV8_1X16,
++		MEDIA_BUS_FMT_YVYU8_1X16,
++		MEDIA_BUS_FMT_UYVY8_1X16,
++		MEDIA_BUS_FMT_VYUY8_1X16,
++	};
++
++	const u32 depth10[] = {
++		MEDIA_BUS_FMT_YUYV10_1X20,
++		MEDIA_BUS_FMT_YVYU10_1X20,
++		MEDIA_BUS_FMT_UYVY10_1X20,
++		MEDIA_BUS_FMT_VYUY10_1X20,
++	};
++
++	if (order < 0 || order > 3)
++		return 0;
++
++	switch (data_type) {
++	case IMAGE_DT_YUV422_8:
++		return depth8[order];
++	case IMAGE_DT_YUV422_10:
++		return depth10[order];
++	}
++
++	return 0;
++}
++
++static u32 data_type_to_mbus_code(int data_type, int bayer_order)
++{
++	if (is_raw(data_type))
++		return bayer_to_mbus_code(data_type, bayer_order);
++
++	switch (data_type) {
++	case IMAGE_DT_YUV422_8:
++	case IMAGE_DT_YUV422_10:
++		return yuv422_to_mbus_code(data_type, bayer_order);
++	case IMAGE_DT_RGB565:
++		return MEDIA_BUS_FMT_RGB565_2X8_LE;
++	case IMAGE_DT_RGB888:
++		return MEDIA_BUS_FMT_RGB888_1X24;
++	}
++
++	return 0;
++}
++
++/* Get bayer order based on flip setting. */
++static u32 pivariety_get_format_code(struct pivariety *pivariety,
++				     struct arducam_format *format)
++{
++	unsigned int order, origin_order;
++
++	lockdep_assert_held(&pivariety->mutex);
++
++	/*
++	 * Only the bayer format needs to transform the format.
++	 */
++	if (!is_raw(format->data_type) ||
++	    !pivariety->bayer_order_volatile ||
++	    format->bayer_order == BAYER_ORDER_GRAY)
++		return data_type_to_mbus_code(format->data_type,
++					      format->bayer_order);
++
++	order = format->bayer_order;
++
++	origin_order = order;
++
++	order = (pivariety->hflip && pivariety->hflip->val ? order ^ 1 : order);
++	order = (pivariety->vflip && pivariety->vflip->val ? order ^ 2 : order);
++
++	v4l2_dbg(1, debug, &pivariety->sd, "%s: before: %d, after: %d.\n",
++		 __func__, origin_order, order);
++
++	return data_type_to_mbus_code(format->data_type, order);
++}
++
++/* Power/clock management functions */
++static int pivariety_power_on(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct pivariety *pivariety = to_pivariety(sd);
++	int ret;
++
++	ret = regulator_bulk_enable(ARDUCAM_NUM_SUPPLIES,
++				    pivariety->supplies);
++	if (ret) {
++		dev_err(dev, "%s: failed to enable regulators\n",
++			__func__);
++		return ret;
++	}
++
++	ret = clk_prepare_enable(pivariety->xclk);
++	if (ret) {
++		dev_err(dev, "%s: failed to enable clock\n",
++			__func__);
++		goto reg_off;
++	}
++
++	gpiod_set_value_cansleep(pivariety->reset_gpio, 1);
++	usleep_range(ARDUCAM_XCLR_MIN_DELAY_US,
++		     ARDUCAM_XCLR_MIN_DELAY_US + ARDUCAM_XCLR_DELAY_RANGE_US);
++
++	return 0;
++
++reg_off:
++	regulator_bulk_disable(ARDUCAM_NUM_SUPPLIES, pivariety->supplies);
++
++	return ret;
++}
++
++static int pivariety_power_off(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct pivariety *pivariety = to_pivariety(sd);
++
++	gpiod_set_value_cansleep(pivariety->reset_gpio, 0);
++	regulator_bulk_disable(ARDUCAM_NUM_SUPPLIES, pivariety->supplies);
++	clk_disable_unprepare(pivariety->xclk);
++
++	return 0;
++}
++
++static int pivariety_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
++{
++	struct pivariety *pivariety = to_pivariety(sd);
++	struct v4l2_mbus_framefmt *try_fmt =
++		v4l2_subdev_get_try_format(sd, fh->state, 0);
++	struct arducam_format *def_fmt = &pivariety->supported_formats[0];
++
++	/* Initialize try_fmt */
++	try_fmt->width = def_fmt->resolution_set->width;
++	try_fmt->height = def_fmt->resolution_set->height;
++	try_fmt->code = def_fmt->mbus_code;
++	try_fmt->field = V4L2_FIELD_NONE;
++
++	return 0;
++}
++
++static int pivariety_s_ctrl(struct v4l2_ctrl *ctrl)
++{
++	int ret, i;
++	struct pivariety *pivariety =
++		container_of(ctrl->handler, struct pivariety,
++			     ctrl_handler);
++	struct arducam_format *supported_fmts = pivariety->supported_formats;
++	int num_supported_formats = pivariety->num_supported_formats;
++
++	v4l2_dbg(3, debug, &pivariety->sd, "%s: cid = (0x%X), value = (%d).\n",
++		 __func__, ctrl->id, ctrl->val);
++
++	ret = pivariety_write(pivariety, CTRL_ID_REG, ctrl->id);
++	ret += pivariety_write(pivariety, CTRL_VALUE_REG, ctrl->val);
++	if (ret < 0)
++		return -EINVAL;
++
++	/* When flip is set, modify all bayer formats */
++	if (ctrl->id == V4L2_CID_VFLIP || ctrl->id == V4L2_CID_HFLIP) {
++		for (i = 0; i < num_supported_formats; i++) {
++			supported_fmts[i].mbus_code =
++				pivariety_get_format_code(pivariety,
++							  &supported_fmts[i]);
++		}
++	}
++
++	/*
++	 * When starting streaming, controls are set in batches,
++	 * and the short interval will cause some controls to be unsuccessfully
++	 * set.
++	 */
++	if (pivariety->wait_until_free)
++		wait_for_free(pivariety, 1);
++	else
++		usleep_range(200, 210);
++
++	return 0;
++}
++
++static const struct v4l2_ctrl_ops pivariety_ctrl_ops = {
++	.s_ctrl = pivariety_s_ctrl,
++};
++
++static int pivariety_enum_mbus_code(struct v4l2_subdev *sd,
++				    struct v4l2_subdev_state *sd_state,
++				    struct v4l2_subdev_mbus_code_enum *code)
++{
++	struct pivariety *pivariety = to_pivariety(sd);
++	struct arducam_format *supported_formats = pivariety->supported_formats;
++	int num_supported_formats = pivariety->num_supported_formats;
++
++	v4l2_dbg(1, debug, sd, "%s: index = (%d)\n", __func__, code->index);
++
++	if (code->index >= num_supported_formats)
++		return -EINVAL;
++
++	code->code = supported_formats[code->index].mbus_code;
++
++	return 0;
++}
++
++static int pivariety_enum_framesizes(struct v4l2_subdev *sd,
++				     struct v4l2_subdev_state *sd_state,
++				     struct v4l2_subdev_frame_size_enum *fse)
++{
++	int i;
++	struct pivariety *pivariety = to_pivariety(sd);
++	struct arducam_format *supported_formats = pivariety->supported_formats;
++	int num_supported_formats = pivariety->num_supported_formats;
++	struct arducam_format *format;
++	struct arducam_resolution *resolution;
++
++	v4l2_dbg(1, debug, sd, "%s: code = (0x%X), index = (%d)\n",
++		 __func__, fse->code, fse->index);
++
++	for (i = 0; i < num_supported_formats; i++) {
++		format = &supported_formats[i];
++		if (fse->code == format->mbus_code) {
++			if (fse->index >= format->num_resolution_set)
++				return -EINVAL;
++
++			resolution = &format->resolution_set[fse->index];
++			fse->min_width = resolution->width;
++			fse->max_width = resolution->width;
++			fse->min_height = resolution->height;
++			fse->max_height = resolution->height;
++
++			return 0;
++		}
++	}
++
++	return -EINVAL;
++}
++
++static int pivariety_get_fmt(struct v4l2_subdev *sd,
++			     struct v4l2_subdev_state *sd_state,
++			     struct v4l2_subdev_format *format)
++{
++	struct pivariety *pivariety = to_pivariety(sd);
++	struct arducam_format *current_format;
++	struct v4l2_mbus_framefmt *fmt = &format->format;
++	int cur_res_idx;
++
++	if (format->pad != 0)
++		return -EINVAL;
++
++	mutex_lock(&pivariety->mutex);
++
++	current_format =
++		&pivariety->supported_formats[pivariety->current_format_idx];
++	cur_res_idx = pivariety->current_resolution_idx;
++	format->format.width =
++		current_format->resolution_set[cur_res_idx].width;
++	format->format.height =
++		current_format->resolution_set[cur_res_idx].height;
++	format->format.code = current_format->mbus_code;
++	format->format.field = V4L2_FIELD_NONE;
++	fmt->colorspace = V4L2_COLORSPACE_RAW;
++	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
++	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
++							  fmt->colorspace,
++							  fmt->ycbcr_enc);
++	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
++
++	v4l2_dbg(1, debug, sd, "%s: width: (%d) height: (%d) code: (0x%X)\n",
++		 __func__, format->format.width, format->format.height,
++		 format->format.code);
++
++	mutex_unlock(&pivariety->mutex);
++	return 0;
++}
++
++static int pivariety_get_fmt_idx_by_code(struct pivariety *pivariety,
++					 u32 mbus_code)
++{
++	int i;
++	u32 data_type;
++	struct arducam_format *formats = pivariety->supported_formats;
++
++	for (i = 0; i < pivariety->num_supported_formats; i++) {
++		if (formats[i].mbus_code == mbus_code)
++			return i;
++	}
++
++	/*
++	 * If the specified format is not found in the list of supported
++	 * formats, try to find a format of the same data type.
++	 */
++	for (i = 0; i < ARRAY_SIZE(codes); i++)
++		if (codes[i] == mbus_code)
++			break;
++
++	if (i >= ARRAY_SIZE(codes))
++		return -EINVAL;
++
++	data_type = i / 5 + IMAGE_DT_RAW8;
++
++	for (i = 0; i < pivariety->num_supported_formats; i++) {
++		if (formats[i].data_type == data_type)
++			return i;
++	}
++
++	return -EINVAL;
++}
++
++static struct v4l2_ctrl *get_control(struct pivariety *pivariety,
++				     u32 id)
++{
++	int index = 0;
++
++	while (index < MAX_CTRLS && pivariety->ctrls[index]) {
++		if (pivariety->ctrls[index]->id == id)
++			return pivariety->ctrls[index];
++		index++;
++	}
++
++	return NULL;
++}
++
++static int update_control(struct pivariety *pivariety, u32 id)
++{
++	struct v4l2_subdev *sd = &pivariety->sd;
++	struct v4l2_ctrl *ctrl;
++	u32 min, max, step, def, id2;
++	int ret = 0;
++
++	pivariety_write(pivariety, CTRL_ID_REG, id);
++	pivariety_read(pivariety, CTRL_ID_REG, &id2);
++
++	v4l2_dbg(1, debug, sd, "%s: Write ID: 0x%08X Read ID: 0x%08X\n",
++		 __func__, id, id2);
++
++	pivariety_write(pivariety, CTRL_VALUE_REG, 0);
++	wait_for_free(pivariety, 1);
++
++	ret += pivariety_read(pivariety, CTRL_MAX_REG, &max);
++	ret += pivariety_read(pivariety, CTRL_MIN_REG, &min);
++	ret += pivariety_read(pivariety, CTRL_DEF_REG, &def);
++	ret += pivariety_read(pivariety, CTRL_STEP_REG, &step);
++
++	if (ret < 0)
++		goto err;
++
++	if (id == NO_DATA_AVAILABLE || max == NO_DATA_AVAILABLE ||
++	    min == NO_DATA_AVAILABLE || def == NO_DATA_AVAILABLE ||
++	    step == NO_DATA_AVAILABLE)
++		goto err;
++
++	v4l2_dbg(1, debug, sd, "%s: min: %d, max: %d, step: %d, def: %d\n",
++		 __func__, min, max, step, def);
++
++	ctrl = get_control(pivariety, id);
++	return __v4l2_ctrl_modify_range(ctrl, min, max, step, def);
++
++err:
++	return -EINVAL;
++}
++
++static int update_controls(struct pivariety *pivariety)
++{
++	int ret = 0;
++	int index = 0;
++
++	wait_for_free(pivariety, 5);
++
++	while (index < MAX_CTRLS && pivariety->ctrls[index]) {
++		ret += update_control(pivariety, pivariety->ctrls[index]->id);
++		index++;
++	}
++
++	return ret;
++}
++
++static int pivariety_set_fmt(struct v4l2_subdev *sd,
++			     struct v4l2_subdev_state *sd_state,
++			     struct v4l2_subdev_format *format)
++{
++	int i, j;
++	struct pivariety *pivariety = to_pivariety(sd);
++	struct arducam_format *supported_formats = pivariety->supported_formats;
++
++	if (format->pad != 0)
++		return -EINVAL;
++
++	mutex_lock(&pivariety->mutex);
++
++	format->format.colorspace = V4L2_COLORSPACE_RAW;
++	format->format.field = V4L2_FIELD_NONE;
++
++	v4l2_dbg(1, debug, sd, "%s: code: 0x%X, width: %d, height: %d\n",
++		 __func__, format->format.code, format->format.width,
++		 format->format.height);
++
++	i = pivariety_get_fmt_idx_by_code(pivariety, format->format.code);
++	if (i < 0)
++		i = 0;
++
++	format->format.code = supported_formats[i].mbus_code;
++
++	for (j = 0; j < supported_formats[i].num_resolution_set; j++) {
++		if (supported_formats[i].resolution_set[j].width ==
++						format->format.width &&
++			supported_formats[i].resolution_set[j].height ==
++						format->format.height) {
++			v4l2_dbg(1, debug, sd,
++				 "%s: format match.\n", __func__);
++			v4l2_dbg(1, debug, sd,
++				 "%s: set format to device: %d %d.\n",
++				 __func__, supported_formats[i].index, j);
++
++			pivariety_write(pivariety, PIXFORMAT_INDEX_REG,
++					supported_formats[i].index);
++			pivariety_write(pivariety, RESOLUTION_INDEX_REG, j);
++
++			pivariety->current_format_idx = i;
++			pivariety->current_resolution_idx = j;
++
++			update_controls(pivariety);
++
++			goto unlock;
++		}
++	}
++
++	format->format.width = supported_formats[i].resolution_set[0].width;
++	format->format.height = supported_formats[i].resolution_set[0].height;
++
++	pivariety_write(pivariety, PIXFORMAT_INDEX_REG,
++			supported_formats[i].index);
++	pivariety_write(pivariety, RESOLUTION_INDEX_REG, 0);
++
++	pivariety->current_format_idx = i;
++	pivariety->current_resolution_idx = 0;
++	update_controls(pivariety);
++
++unlock:
++
++	mutex_unlock(&pivariety->mutex);
++
++	return 0;
++}
++
++/* Start streaming */
++static int pivariety_start_streaming(struct pivariety *pivariety)
++{
++	int ret;
++
++	/* set stream on register */
++	ret = pivariety_write(pivariety, MODE_SELECT_REG,
++			      ARDUCAM_MODE_STREAMING);
++
++	if (ret)
++		return ret;
++
++	wait_for_free(pivariety, 2);
++
++	/*
++	 * When starting streaming, controls are set in batches,
++	 * and the short interval will cause some controls to be unsuccessfully
++	 * set.
++	 */
++	pivariety->wait_until_free = true;
++	/* Apply customized values from user */
++	ret =  __v4l2_ctrl_handler_setup(pivariety->sd.ctrl_handler);
++
++	pivariety->wait_until_free = false;
++	if (ret)
++		return ret;
++
++	wait_for_free(pivariety, 2);
++
++	return ret;
++}
++
++static int pivariety_read_sel(struct pivariety *pivariety,
++			      struct v4l2_rect *rect)
++{
++	int ret = 0;
++
++	ret += pivariety_read(pivariety, IPC_SEL_TOP_REG, &rect->top);
++	ret += pivariety_read(pivariety, IPC_SEL_LEFT_REG, &rect->left);
++	ret += pivariety_read(pivariety, IPC_SEL_WIDTH_REG, &rect->width);
++	ret += pivariety_read(pivariety, IPC_SEL_HEIGHT_REG, &rect->height);
++
++	if (ret || rect->top == NO_DATA_AVAILABLE ||
++	    rect->left == NO_DATA_AVAILABLE ||
++	    rect->width == NO_DATA_AVAILABLE ||
++	    rect->height == NO_DATA_AVAILABLE) {
++		v4l2_err(&pivariety->sd, "%s: Failed to read selection.\n",
++			 __func__);
++		return -EINVAL;
++		}
++
++	return 0;
++}
++
++static const struct v4l2_rect *
++__pivariety_get_pad_crop(struct pivariety *pivariety,
++			 struct v4l2_subdev_state *sd_state,
++			 unsigned int pad,
++			 enum v4l2_subdev_format_whence which)
++{
++	int ret;
++
++	switch (which) {
++	case V4L2_SUBDEV_FORMAT_TRY:
++		return v4l2_subdev_get_try_crop(&pivariety->sd, sd_state, pad);
++	case V4L2_SUBDEV_FORMAT_ACTIVE:
++		ret = pivariety_read_sel(pivariety, &pivariety->crop);
++		if (ret)
++			return NULL;
++		return &pivariety->crop;
++	}
++
++	return NULL;
++}
++
++static int pivariety_get_selection(struct v4l2_subdev *sd,
++				   struct v4l2_subdev_state *sd_state,
++				   struct v4l2_subdev_selection *sel)
++{
++	int ret = 0;
++	struct v4l2_rect rect;
++	struct pivariety *pivariety = to_pivariety(sd);
++
++	ret = pivariety_write(pivariety, IPC_SEL_TARGET_REG, sel->target);
++	if (ret) {
++		v4l2_err(sd, "%s: Write register 0x%02x failed\n",
++			 __func__, IPC_SEL_TARGET_REG);
++		return -EINVAL;
++	}
++
++	wait_for_free(pivariety, 2);
++
++	switch (sel->target) {
++	case V4L2_SEL_TGT_CROP: {
++		mutex_lock(&pivariety->mutex);
++		sel->r = *__pivariety_get_pad_crop(pivariety, sd_state,
++						   sel->pad,
++						   sel->which);
++		mutex_unlock(&pivariety->mutex);
++
++		return 0;
++	}
++
++	case V4L2_SEL_TGT_NATIVE_SIZE:
++	case V4L2_SEL_TGT_CROP_DEFAULT:
++	case V4L2_SEL_TGT_CROP_BOUNDS:
++		ret = pivariety_read_sel(pivariety, &rect);
++		if (ret)
++			return -EINVAL;
++
++		sel->r = rect;
++		return 0;
++	}
++
++	return -EINVAL;
++}
++
++/* Stop streaming */
++static int pivariety_stop_streaming(struct pivariety *pivariety)
++{
++	int ret;
++
++	/* set stream off register */
++	ret = pivariety_write(pivariety, MODE_SELECT_REG, ARDUCAM_MODE_STANDBY);
++	if (ret)
++		v4l2_err(&pivariety->sd, "%s failed to set stream\n", __func__);
++
++	/*
++	 * Return success even if it was an error, as there is nothing the
++	 * caller can do about it.
++	 */
++	return 0;
++}
++
++static int pivariety_set_stream(struct v4l2_subdev *sd, int enable)
++{
++	struct pivariety *pivariety = to_pivariety(sd);
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	int ret = 0;
++
++	mutex_lock(&pivariety->mutex);
++	if (pivariety->streaming == enable) {
++		mutex_unlock(&pivariety->mutex);
++		return 0;
++	}
++
++	if (enable) {
++		ret = pm_runtime_get_sync(&client->dev);
++		if (ret < 0) {
++			pm_runtime_put_noidle(&client->dev);
++			goto err_unlock;
++		}
++
++		/*
++		 * Apply default & customized values
++		 * and then start streaming.
++		 */
++		ret = pivariety_start_streaming(pivariety);
++		if (ret)
++			goto err_rpm_put;
++	} else {
++		pivariety_stop_streaming(pivariety);
++		pm_runtime_put(&client->dev);
++	}
++
++	pivariety->streaming = enable;
++
++	/*
++	 * vflip and hflip cannot change during streaming
++	 * Pivariety may not implement flip control.
++	 */
++	if (pivariety->vflip)
++		__v4l2_ctrl_grab(pivariety->vflip, enable);
++
++	if (pivariety->hflip)
++		__v4l2_ctrl_grab(pivariety->hflip, enable);
++
++	mutex_unlock(&pivariety->mutex);
++
++	return ret;
++
++err_rpm_put:
++	pm_runtime_put(&client->dev);
++err_unlock:
++	mutex_unlock(&pivariety->mutex);
++
++	return ret;
++}
++
++static int __maybe_unused pivariety_suspend(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct pivariety *pivariety = to_pivariety(sd);
++
++	if (pivariety->streaming)
++		pivariety_stop_streaming(pivariety);
++
++	return 0;
++}
++
++static int __maybe_unused pivariety_resume(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct pivariety *pivariety = to_pivariety(sd);
++	int ret;
++
++	if (pivariety->streaming) {
++		ret = pivariety_start_streaming(pivariety);
++		if (ret)
++			goto error;
++	}
++
++	return 0;
++
++error:
++	pivariety_stop_streaming(pivariety);
++	pivariety->streaming = 0;
++	return ret;
++}
++
++static int pivariety_get_regulators(struct pivariety *pivariety)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&pivariety->sd);
++	int i;
++
++	for (i = 0; i < ARDUCAM_NUM_SUPPLIES; i++)
++		pivariety->supplies[i].supply = pivariety_supply_name[i];
++
++	return devm_regulator_bulk_get(&client->dev,
++				       ARDUCAM_NUM_SUPPLIES,
++				       pivariety->supplies);
++}
++
++static int pivariety_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
++				     struct v4l2_mbus_config *cfg)
++{
++	struct pivariety *pivariety = to_pivariety(sd);
++	const u32 mask = V4L2_MBUS_CSI2_LANE_MASK;
++
++	if (pivariety->lanes > pivariety->bus.num_data_lanes)
++		return -EINVAL;
++
++	cfg->type = V4L2_MBUS_CSI2_DPHY;
++	cfg->flags = (pivariety->lanes << __ffs(mask)) & mask;
++
++	return 0;
++}
++
++static const struct v4l2_subdev_core_ops pivariety_core_ops = {
++	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
++	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
++};
++
++static const struct v4l2_subdev_video_ops pivariety_video_ops = {
++	.s_stream = pivariety_set_stream,
++};
++
++static const struct v4l2_subdev_pad_ops pivariety_pad_ops = {
++	.enum_mbus_code = pivariety_enum_mbus_code,
++	.get_fmt = pivariety_get_fmt,
++	.set_fmt = pivariety_set_fmt,
++	.enum_frame_size = pivariety_enum_framesizes,
++	.get_selection = pivariety_get_selection,
++	.get_mbus_config = pivariety_get_mbus_config,
++};
++
++static const struct v4l2_subdev_ops pivariety_subdev_ops = {
++	.core = &pivariety_core_ops,
++	.video = &pivariety_video_ops,
++	.pad = &pivariety_pad_ops,
++};
++
++static const struct v4l2_subdev_internal_ops pivariety_internal_ops = {
++	.open = pivariety_open,
++};
++
++static void pivariety_free_controls(struct pivariety *pivariety)
++{
++	v4l2_ctrl_handler_free(pivariety->sd.ctrl_handler);
++	mutex_destroy(&pivariety->mutex);
++}
++
++static int pivariety_get_length_of_set(struct pivariety *pivariety,
++				       u16 idx_reg, u16 val_reg)
++{
++	int ret;
++	int index = 0;
++	u32 val;
++
++	while (1) {
++		ret = pivariety_write(pivariety, idx_reg, index);
++		ret += pivariety_read(pivariety, val_reg, &val);
++
++		if (ret < 0)
++			return -1;
++
++		if (val == NO_DATA_AVAILABLE)
++			break;
++		index++;
++	}
++	pivariety_write(pivariety, idx_reg, 0);
++	return index;
++}
++
++static int pivariety_enum_resolution(struct pivariety *pivariety,
++				     struct arducam_format *format)
++{
++	struct i2c_client *client = v4l2_get_subdevdata(&pivariety->sd);
++	int index = 0;
++	u32 width, height;
++	int num_resolution = 0;
++	int ret;
++
++	num_resolution = pivariety_get_length_of_set(pivariety,
++						     RESOLUTION_INDEX_REG,
++						     FORMAT_WIDTH_REG);
++	if (num_resolution < 0)
++		goto err;
++
++	format->resolution_set = devm_kzalloc(&client->dev,
++					      sizeof(*format->resolution_set) *
++								num_resolution,
++					      GFP_KERNEL);
++	while (1) {
++		ret = pivariety_write(pivariety, RESOLUTION_INDEX_REG, index);
++		ret += pivariety_read(pivariety, FORMAT_WIDTH_REG, &width);
++		ret += pivariety_read(pivariety, FORMAT_HEIGHT_REG, &height);
++
++		if (ret < 0)
++			goto err;
++
++		if (width == NO_DATA_AVAILABLE || height == NO_DATA_AVAILABLE)
++			break;
++
++		format->resolution_set[index].width = width;
++		format->resolution_set[index].height = height;
++
++		index++;
++	}
++
++	format->num_resolution_set = index;
++	pivariety_write(pivariety, RESOLUTION_INDEX_REG, 0);
++	return 0;
++err:
++	return -ENODEV;
++}
++
++static int pivariety_enum_pixformat(struct pivariety *pivariety)
++{
++	int ret = 0;
++	u32 mbus_code = 0;
++	int pixfmt_type;
++	int bayer_order;
++	int bayer_order_not_volatile;
++	int lanes;
++	int index = 0;
++	int num_pixformat = 0;
++	struct arducam_format *arducam_fmt;
++	struct i2c_client *client = v4l2_get_subdevdata(&pivariety->sd);
++
++	num_pixformat = pivariety_get_length_of_set(pivariety,
++						    PIXFORMAT_INDEX_REG,
++						    PIXFORMAT_TYPE_REG);
++
++	if (num_pixformat < 0)
++		goto err;
++
++	ret = pivariety_read(pivariety, FLIPS_DONT_CHANGE_ORDER_REG,
++			     &bayer_order_not_volatile);
++	if (bayer_order_not_volatile == NO_DATA_AVAILABLE)
++		pivariety->bayer_order_volatile = 1;
++	else
++		pivariety->bayer_order_volatile = !bayer_order_not_volatile;
++
++	if (ret < 0)
++		goto err;
++
++	pivariety->supported_formats =
++		devm_kzalloc(&client->dev,
++			     sizeof(*pivariety->supported_formats) *
++								num_pixformat,
++			     GFP_KERNEL);
++
++	while (1) {
++		ret = pivariety_write(pivariety, PIXFORMAT_INDEX_REG, index);
++		ret += pivariety_read(pivariety, PIXFORMAT_TYPE_REG,
++				      &pixfmt_type);
++
++		if (pixfmt_type == NO_DATA_AVAILABLE)
++			break;
++
++		ret += pivariety_read(pivariety, MIPI_LANES_REG, &lanes);
++		if (lanes == NO_DATA_AVAILABLE)
++			break;
++
++		ret += pivariety_read(pivariety, PIXFORMAT_ORDER_REG,
++				      &bayer_order);
++		if (ret < 0)
++			goto err;
++
++		mbus_code = data_type_to_mbus_code(pixfmt_type, bayer_order);
++		arducam_fmt = &pivariety->supported_formats[index];
++		arducam_fmt->index = index;
++		arducam_fmt->mbus_code = mbus_code;
++		arducam_fmt->bayer_order = bayer_order;
++		arducam_fmt->data_type = pixfmt_type;
++		if (pivariety_enum_resolution(pivariety, arducam_fmt))
++			goto err;
++
++		index++;
++	}
++
++	pivariety_write(pivariety, PIXFORMAT_INDEX_REG, 0);
++	pivariety->num_supported_formats = index;
++	pivariety->current_format_idx = 0;
++	pivariety->current_resolution_idx = 0;
++	pivariety->lanes = lanes;
++
++	return 0;
++
++err:
++	return -ENODEV;
++}
++
++static const char *pivariety_ctrl_get_name(u32 id)
++{
++	switch (id) {
++	case V4L2_CID_ARDUCAM_EXT_TRI:
++		return "trigger_mode";
++	case V4L2_CID_ARDUCAM_IRCUT:
++		return "ircut";
++	default:
++		return NULL;
++	}
++}
++
++enum v4l2_ctrl_type pivariety_get_v4l2_ctrl_type(u32 id)
++{
++	switch (id) {
++	case V4L2_CID_ARDUCAM_EXT_TRI:
++		return V4L2_CTRL_TYPE_BOOLEAN;
++	case V4L2_CID_ARDUCAM_IRCUT:
++		return V4L2_CTRL_TYPE_BOOLEAN;
++	default:
++		return V4L2_CTRL_TYPE_INTEGER;
++	}
++}
++
++static struct v4l2_ctrl *v4l2_ctrl_new_arducam(struct v4l2_ctrl_handler *hdl,
++					       const struct v4l2_ctrl_ops *ops,
++					       u32 id, s64 min, s64 max,
++					       u64 step, s64 def)
++{
++	struct v4l2_ctrl_config ctrl_cfg = {
++		.ops = ops,
++		.id = id,
++		.name = NULL,
++		.type = V4L2_CTRL_TYPE_INTEGER,
++		.flags = 0,
++		.min = min,
++		.max = max,
++		.def = def,
++		.step = step,
++	};
++
++	ctrl_cfg.name = pivariety_ctrl_get_name(id);
++	ctrl_cfg.type = pivariety_get_v4l2_ctrl_type(id);
++
++	return v4l2_ctrl_new_custom(hdl, &ctrl_cfg, NULL);
++}
++
++static int pivariety_enum_controls(struct pivariety *pivariety)
++{
++	struct v4l2_subdev *sd = &pivariety->sd;
++	struct i2c_client *client = v4l2_get_subdevdata(sd);
++	struct v4l2_ctrl_handler *ctrl_hdlr = &pivariety->ctrl_handler;
++	struct v4l2_fwnode_device_properties props;
++	struct v4l2_ctrl **ctrl = pivariety->ctrls;
++	int ret, index, num_ctrls;
++	u32 id, min, max, def, step;
++
++	num_ctrls = pivariety_get_length_of_set(pivariety, CTRL_INDEX_REG,
++						CTRL_ID_REG);
++	if (num_ctrls < 0)
++		goto err;
++
++	v4l2_dbg(1, debug, sd, "%s: num_ctrls = %d\n",
++		 __func__, num_ctrls);
++
++	ret = v4l2_ctrl_handler_init(ctrl_hdlr, num_ctrls);
++	if (ret)
++		return ret;
++
++	index = 0;
++	while (1) {
++		ret = pivariety_write(pivariety, CTRL_INDEX_REG, index);
++		pivariety_write(pivariety, CTRL_VALUE_REG, 0);
++		wait_for_free(pivariety, 1);
++
++		ret += pivariety_read(pivariety, CTRL_ID_REG, &id);
++		ret += pivariety_read(pivariety, CTRL_MAX_REG, &max);
++		ret += pivariety_read(pivariety, CTRL_MIN_REG, &min);
++		ret += pivariety_read(pivariety, CTRL_DEF_REG, &def);
++		ret += pivariety_read(pivariety, CTRL_STEP_REG, &step);
++		if (ret < 0)
++			goto err;
++
++		if (id == NO_DATA_AVAILABLE || max == NO_DATA_AVAILABLE ||
++		    min == NO_DATA_AVAILABLE || def == NO_DATA_AVAILABLE ||
++		    step == NO_DATA_AVAILABLE)
++			break;
++
++		v4l2_dbg(1, debug, sd,
++			 "%s: index = %d, id = 0x%x, max = %d, min = %d, def = %d, step = %d\n",
++			 __func__, index, id, max, min, def, step);
++
++		if (v4l2_ctrl_get_name(id)) {
++			*ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
++						  &pivariety_ctrl_ops,
++						  id, min,
++						  max, step,
++						  def);
++			v4l2_dbg(1, debug, sd, "%s: ctrl: 0x%p\n",
++				 __func__, *ctrl);
++		} else if (pivariety_ctrl_get_name(id)) {
++			*ctrl = v4l2_ctrl_new_arducam(ctrl_hdlr,
++						      &pivariety_ctrl_ops,
++						      id, min, max, step, def);
++
++			v4l2_dbg(1, debug, sd,
++				 "%s: new custom ctrl, ctrl: 0x%p.\n",
++				 __func__, *ctrl);
++		} else {
++			index++;
++			continue;
++		}
++
++		if (!*ctrl)
++			goto err;
++
++		switch (id) {
++		case V4L2_CID_HFLIP:
++			pivariety->hflip = *ctrl;
++			if (pivariety->bayer_order_volatile)
++				pivariety->hflip->flags |=
++						V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++			break;
++
++		case V4L2_CID_VFLIP:
++			pivariety->vflip = *ctrl;
++			if (pivariety->bayer_order_volatile)
++				pivariety->vflip->flags |=
++						V4L2_CTRL_FLAG_MODIFY_LAYOUT;
++			break;
++
++		case V4L2_CID_HBLANK:
++			(*ctrl)->flags |= V4L2_CTRL_FLAG_READ_ONLY;
++			break;
++		}
++
++		ctrl++;
++		index++;
++	}
++
++	pivariety_write(pivariety, CTRL_INDEX_REG, 0);
++
++	ret = v4l2_fwnode_device_parse(&client->dev, &props);
++	if (ret)
++		goto err;
++
++	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr,
++					      &pivariety_ctrl_ops,
++					      &props);
++	if (ret)
++		goto err;
++
++	pivariety->sd.ctrl_handler = ctrl_hdlr;
++	v4l2_ctrl_handler_setup(ctrl_hdlr);
++	return 0;
++err:
++	return -ENODEV;
++}
++
++static int pivariety_parse_dt(struct pivariety *pivariety, struct device *dev)
++{
++	struct fwnode_handle *endpoint;
++	struct v4l2_fwnode_endpoint ep_cfg = {
++		.bus_type = V4L2_MBUS_CSI2_DPHY
++	};
++	int ret = -EINVAL;
++
++	/* Get CSI2 bus config */
++	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
++	if (!endpoint) {
++		dev_err(dev, "endpoint node not found\n");
++		return -EINVAL;
++	}
++
++	if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
++		dev_err(dev, "could not parse endpoint\n");
++		goto error_out;
++	}
++
++	pivariety->bus = ep_cfg.bus.mipi_csi2;
++
++	ret = 0;
++
++error_out:
++	v4l2_fwnode_endpoint_free(&ep_cfg);
++	fwnode_handle_put(endpoint);
++
++	return ret;
++}
++
++static int pivariety_probe(struct i2c_client *client,
++			   const struct i2c_device_id *id)
++{
++	struct device *dev = &client->dev;
++	struct pivariety *pivariety;
++	u32 device_id, firmware_version;
++	int ret;
++
++	pivariety = devm_kzalloc(&client->dev, sizeof(*pivariety), GFP_KERNEL);
++	if (!pivariety)
++		return -ENOMEM;
++
++	/* Initialize subdev */
++	v4l2_i2c_subdev_init(&pivariety->sd, client,
++			     &pivariety_subdev_ops);
++
++	if (pivariety_parse_dt(pivariety, dev))
++		return -EINVAL;
++
++	/* Get system clock (xclk) */
++	pivariety->xclk = devm_clk_get(dev, "xclk");
++	if (IS_ERR(pivariety->xclk)) {
++		dev_err(dev, "failed to get xclk\n");
++		return PTR_ERR(pivariety->xclk);
++	}
++
++	pivariety->xclk_freq = clk_get_rate(pivariety->xclk);
++	if (pivariety->xclk_freq != 24000000) {
++		dev_err(dev, "xclk frequency not supported: %d Hz\n",
++			pivariety->xclk_freq);
++		return -EINVAL;
++	}
++
++	ret = pivariety_get_regulators(pivariety);
++	if (ret)
++		return ret;
++
++	/* Request optional enable pin */
++	pivariety->reset_gpio = devm_gpiod_get_optional(dev, "reset",
++							GPIOD_OUT_HIGH);
++
++	ret = pivariety_power_on(dev);
++	if (ret)
++		return ret;
++
++	ret = pivariety_read(pivariety, DEVICE_ID_REG, &device_id);
++	if (ret || device_id != DEVICE_ID) {
++		dev_err(dev, "probe failed\n");
++		ret = -ENODEV;
++		goto error_power_off;
++	}
++
++	ret = pivariety_read(pivariety, DEVICE_VERSION_REG, &firmware_version);
++	if (ret)
++		dev_err(dev, "read firmware version failed\n");
++
++	dev_info(dev, "firmware version: 0x%04X\n", firmware_version);
++
++	if (pivariety_enum_pixformat(pivariety)) {
++		dev_err(dev, "enum pixformat failed.\n");
++		ret = -ENODEV;
++		goto error_power_off;
++	}
++
++	if (pivariety_enum_controls(pivariety)) {
++		dev_err(dev, "enum controls failed.\n");
++		ret = -ENODEV;
++		goto error_power_off;
++	}
++
++	/* Initialize subdev */
++	pivariety->sd.internal_ops = &pivariety_internal_ops;
++	pivariety->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
++	pivariety->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
++	/* Initialize source pad */
++	pivariety->pad.flags = MEDIA_PAD_FL_SOURCE;
++
++	ret = media_entity_pads_init(&pivariety->sd.entity, 1, &pivariety->pad);
++	if (ret)
++		goto error_handler_free;
++
++	ret = v4l2_async_register_subdev_sensor(&pivariety->sd);
++	if (ret < 0)
++		goto error_media_entity;
++
++	pm_runtime_set_active(dev);
++	pm_runtime_enable(dev);
++	pm_runtime_idle(dev);
++
++	return 0;
++
++error_media_entity:
++	media_entity_cleanup(&pivariety->sd.entity);
++
++error_handler_free:
++	pivariety_free_controls(pivariety);
++
++error_power_off:
++	pivariety_power_off(dev);
++
++	return ret;
++}
++
++static int pivariety_remove(struct i2c_client *client)
++{
++	struct v4l2_subdev *sd = i2c_get_clientdata(client);
++	struct pivariety *pivariety = to_pivariety(sd);
++
++	v4l2_async_unregister_subdev(sd);
++	media_entity_cleanup(&sd->entity);
++	pivariety_free_controls(pivariety);
++
++	pm_runtime_disable(&client->dev);
++	pm_runtime_set_suspended(&client->dev);
++
++	return 0;
++}
++
++static const struct dev_pm_ops pivariety_pm_ops = {
++	SET_SYSTEM_SLEEP_PM_OPS(pivariety_suspend, pivariety_resume)
++	SET_RUNTIME_PM_OPS(pivariety_power_off, pivariety_power_on, NULL)
++};
++
++static const struct of_device_id arducam_pivariety_dt_ids[] = {
++	{ .compatible = "arducam,arducam-pivariety" },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, arducam_pivariety_dt_ids);
++
++static struct i2c_driver arducam_pivariety_i2c_driver = {
++	.driver = {
++		.name = "arducam-pivariety",
++		.of_match_table	= arducam_pivariety_dt_ids,
++		.pm = &pivariety_pm_ops,
++	},
++	.probe = pivariety_probe,
++	.remove = pivariety_remove,
++};
++
++module_i2c_driver(arducam_pivariety_i2c_driver);
++
++MODULE_AUTHOR("Lee Jackson <info@arducam.com>");
++MODULE_DESCRIPTION("Arducam Pivariety v4l2 driver");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/drivers/media/i2c/arducam-pivariety.h
+@@ -0,0 +1,107 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++#ifndef _ARDUCAM_PIVARIETY_H_
++#define _ARDUCAM_PIVARIETY_H_
++
++#define DEVICE_REG_BASE		0x0100
++#define PIXFORMAT_REG_BASE	0x0200
++#define FORMAT_REG_BASE		0x0300
++#define CTRL_REG_BASE		0x0400
++#define IPC_REG_BASE		0x0600
++
++#define ARDUCAM_MODE_STANDBY		0x00
++#define ARDUCAM_MODE_STREAMING		0x01
++
++#define MODE_SELECT_REG		(DEVICE_REG_BASE | 0x0000)
++#define DEVICE_VERSION_REG	(DEVICE_REG_BASE | 0x0001)
++#define SENSOR_ID_REG		(DEVICE_REG_BASE | 0x0002)
++#define DEVICE_ID_REG		(DEVICE_REG_BASE | 0x0003)
++#define SYSTEM_IDLE_REG		(DEVICE_REG_BASE | 0x0007)
++
++#define PIXFORMAT_INDEX_REG		(PIXFORMAT_REG_BASE | 0x0000)
++#define PIXFORMAT_TYPE_REG		(PIXFORMAT_REG_BASE | 0x0001)
++#define PIXFORMAT_ORDER_REG		(PIXFORMAT_REG_BASE | 0x0002)
++#define MIPI_LANES_REG			(PIXFORMAT_REG_BASE | 0x0003)
++#define FLIPS_DONT_CHANGE_ORDER_REG	(PIXFORMAT_REG_BASE | 0x0004)
++
++#define RESOLUTION_INDEX_REG	(FORMAT_REG_BASE | 0x0000)
++#define FORMAT_WIDTH_REG	(FORMAT_REG_BASE | 0x0001)
++#define FORMAT_HEIGHT_REG	(FORMAT_REG_BASE | 0x0002)
++
++#define CTRL_INDEX_REG	(CTRL_REG_BASE | 0x0000)
++#define CTRL_ID_REG	(CTRL_REG_BASE | 0x0001)
++#define CTRL_MIN_REG	(CTRL_REG_BASE | 0x0002)
++#define CTRL_MAX_REG	(CTRL_REG_BASE | 0x0003)
++#define CTRL_STEP_REG	(CTRL_REG_BASE | 0x0004)
++#define CTRL_DEF_REG	(CTRL_REG_BASE | 0x0005)
++#define CTRL_VALUE_REG	(CTRL_REG_BASE | 0x0006)
++
++#define IPC_SEL_TARGET_REG	(IPC_REG_BASE | 0x0000)
++#define IPC_SEL_TOP_REG		(IPC_REG_BASE | 0x0001)
++#define IPC_SEL_LEFT_REG	(IPC_REG_BASE | 0x0002)
++#define IPC_SEL_WIDTH_REG	(IPC_REG_BASE | 0x0003)
++#define IPC_SEL_HEIGHT_REG	(IPC_REG_BASE | 0x0004)
++#define IPC_DELAY_REG		(IPC_REG_BASE | 0x0005)
++
++#define NO_DATA_AVAILABLE	0xFFFFFFFE
++
++#define DEVICE_ID	0x0030
++
++#define I2C_READ_RETRY_COUNT	3
++#define I2C_WRITE_RETRY_COUNT	2
++
++#define V4L2_CID_ARDUCAM_BASE		(V4L2_CID_USER_BASE + 0x1000)
++#define V4L2_CID_ARDUCAM_EXT_TRI	(V4L2_CID_ARDUCAM_BASE + 1)
++#define V4L2_CID_ARDUCAM_IRCUT		(V4L2_CID_ARDUCAM_BASE + 8)
++
++enum image_dt {
++	IMAGE_DT_YUV420_8 = 0x18,
++	IMAGE_DT_YUV420_10,
++
++	IMAGE_DT_YUV420CSPS_8 = 0x1C,
++	IMAGE_DT_YUV420CSPS_10,
++	IMAGE_DT_YUV422_8,
++	IMAGE_DT_YUV422_10,
++	IMAGE_DT_RGB444,
++	IMAGE_DT_RGB555,
++	IMAGE_DT_RGB565,
++	IMAGE_DT_RGB666,
++	IMAGE_DT_RGB888,
++
++	IMAGE_DT_RAW6 = 0x28,
++	IMAGE_DT_RAW7,
++	IMAGE_DT_RAW8,
++	IMAGE_DT_RAW10,
++	IMAGE_DT_RAW12,
++	IMAGE_DT_RAW14,
++};
++
++enum bayer_order {
++	BAYER_ORDER_BGGR = 0,
++	BAYER_ORDER_GBRG = 1,
++	BAYER_ORDER_GRBG = 2,
++	BAYER_ORDER_RGGB = 3,
++	BAYER_ORDER_GRAY = 4,
++};
++
++enum yuv_order {
++	YUV_ORDER_YUYV = 0,
++	YUV_ORDER_YVYU = 1,
++	YUV_ORDER_UYVY = 2,
++	YUV_ORDER_VYUY = 3,
++};
++
++struct arducam_resolution {
++	u32 width;
++	u32 height;
++};
++
++struct arducam_format {
++	u32 index;
++	u32 mbus_code;
++	u32 bayer_order;
++	u32 data_type;
++	u32 num_resolution_set;
++	struct arducam_resolution *resolution_set;
++};
++
++#endif
diff --git a/target/linux/bcm27xx/patches-5.15/950-0886-overlays-Add-arducam-pivariety-overlay.dts.patch b/target/linux/bcm27xx/patches-5.15/950-0886-overlays-Add-arducam-pivariety-overlay.dts.patch
new file mode 100644
index 0000000000..305d0adf09
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0886-overlays-Add-arducam-pivariety-overlay.dts.patch
@@ -0,0 +1,147 @@
+From 2027e24ef1d143526bfd596294cf8e18fd5dfe49 Mon Sep 17 00:00:00 2001
+From: Lee Jackson <info@arducam.com>
+Date: Thu, 21 Apr 2022 13:15:34 +0800
+Subject: [PATCH] overlays: Add arducam-pivariety-overlay.dts
+
+Added overlays for enabling Arducam Pivariety and add the
+relevant information to the README.
+
+Signed-off-by: Lee Jackson <info@arducam.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 15 +++
+ .../overlays/arducam-pivariety-overlay.dts    | 94 +++++++++++++++++++
+ 3 files changed, 110 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/arducam-pivariety-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -23,6 +23,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	anyspi.dtbo \
+ 	apds9960.dtbo \
+ 	applepi-dac.dtbo \
++	arducam-pivariety.dtbo \
+ 	at86rf233.dtbo \
+ 	audioinjector-addons.dtbo \
+ 	audioinjector-bare-i2s.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -582,6 +582,21 @@ Load:   dtoverlay=applepi-dac
+ Params: <None>
+ 
+ 
++Name:   arducam-pivariety
++Info:   Arducam Pivariety camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=arducam-pivariety,<param>=<val>
++Params: rotation                Mounting rotation of the camera sensor (0 or
++                                180, default 0)
++        orientation             Sensor orientation (0 = front, 1 = rear,
++                                2 = external, default external)
++        media-controller        Configure use of Media Controller API for
++                                configuring the sensor (default on)
++        cam0                    Adopt the default configuration for CAM0 on a
++                                Compute Module (CSI0, i2c_vc, and cam0_reg).
++
++
+ Name:   at86rf233
+ Info:   Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
+         connected to spi0.0
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/arducam-pivariety-overlay.dts
+@@ -0,0 +1,94 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for Arducam Pivariety camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++/{
++	compatible = "brcm,bcm2835";
++
++	i2c_frag: fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			arducam_pivariety: arducam_pivariety@0c {
++				compatible = "arducam,arducam-pivariety";
++				reg = <0x0c>;
++				status = "okay";
++
++				clocks = <&cam1_clk>;
++				clock-names = "xclk";
++
++				VANA-supply = <&cam1_reg>;	/* 2.8v */
++				VDIG-supply = <&cam_dummy_reg>;	/* 1.8v */
++				VDDL-supply = <&cam_dummy_reg>;	/* 1.2v */
++
++				rotation = <0>;
++				orientation = <2>;
++
++				port {
++					arducam_pivariety_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1 2>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <493500000>;
++					};
++				};
++			};
++		};
++	};
++
++	csi_frag: fragment@1 {
++		target = <&csi1>;
++		csi: __overlay__ {
++			status = "okay";
++			brcm,media-controller;
++
++			port{
++				csi1_ep: endpoint{
++					remote-endpoint = <&arducam_pivariety_0>;
++					clock-lanes = <0>;
++					data-lanes = <1 2>;
++					clock-noncontinuous;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	clk_frag: fragment@3 {
++		target = <&cam1_clk>;
++		__overlay__ {
++			clock-frequency = <24000000>;
++			status = "okay";
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	__overrides__ {
++		rotation = <&arducam_pivariety>,"rotation:0";
++		orientation = <&arducam_pivariety>,"orientation:0";
++		media-controller = <&csi>,"brcm,media-controller?";
++		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
++		       <&csi_frag>, "target:0=",<&csi0>,
++		       <&clk_frag>, "target:0=",<&cam0_clk>,
++		       <&arducam_pivariety>, "clocks:0=",<&cam0_clk>,
++		       <&arducam_pivariety>, "VANA-supply:0=",<&cam0_reg>;
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0887-thermal-broadcom-Use-dev_err_probe-to-suppress-defer.patch b/target/linux/bcm27xx/patches-5.15/950-0887-thermal-broadcom-Use-dev_err_probe-to-suppress-defer.patch
new file mode 100644
index 0000000000..d93e15f216
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0887-thermal-broadcom-Use-dev_err_probe-to-suppress-defer.patch
@@ -0,0 +1,26 @@
+From dd271e8b291cbb95608f7ed43077a8e4cc0c1a8a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 6 May 2022 15:34:44 +0100
+Subject: [PATCH] thermal: broadcom: Use dev_err_probe to suppress
+ defer errors
+
+It is quite common for the devm_thermal_zone_of_sensor_register
+to need to defer, so avoid spamming the log by using
+dev_err_probe instead of dev_err.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/thermal/broadcom/bcm2711_thermal.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/thermal/broadcom/bcm2711_thermal.c
++++ b/drivers/thermal/broadcom/bcm2711_thermal.c
+@@ -95,7 +95,7 @@ static int bcm2711_thermal_probe(struct
+ 						       &bcm2711_thermal_of_ops);
+ 	if (IS_ERR(thermal)) {
+ 		ret = PTR_ERR(thermal);
+-		dev_err(dev, "could not register sensor: %d\n", ret);
++		dev_err_probe(dev, ret, "could not register sensor: %d\n", ret);
+ 		return ret;
+ 	}
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0888-dt-bindings-hwmon-add-microchip-emc2305.yaml-dt-bind.patch b/target/linux/bcm27xx/patches-5.15/950-0888-dt-bindings-hwmon-add-microchip-emc2305.yaml-dt-bind.patch
new file mode 100644
index 0000000000..a05f50b0c8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0888-dt-bindings-hwmon-add-microchip-emc2305.yaml-dt-bind.patch
@@ -0,0 +1,75 @@
+From 115d15dadcaeb1ec4ce67c655ac498b358c88fad Mon Sep 17 00:00:00 2001
+From: Michael Shych <michaelsh@nvidia.com>
+Date: Sat, 30 Apr 2022 14:49:04 +0300
+Subject: [PATCH] dt-bindings: hwmon: add microchip,emc2305.yaml dt
+ binding description.
+
+Submitted to linux-hwmon mailing list at
+https://patchwork.kernel.org/project/linux-hwmon/patch/20220430114905.53448-3-michaelsh@nvidia.com/
+
+Add basic description of emc2305 driver device tree binding.
+
+Signed-off-by: Michael Shych <michaelsh@nvidia.com>
+Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
+---
+ .../bindings/hwmon/microchip,emc2305.yaml     | 54 +++++++++++++++++++
+ 1 file changed, 54 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
+@@ -0,0 +1,54 @@
++# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
++%YAML 1.2
++---
++
++$id: http://devicetree.org/schemas/hwmon/emc2305.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Microchip EMC2305 RPM-based PWM Fan Speed Controller
++
++properties:
++  compatible:
++    enum:
++      - microcip,emc2305
++
++  emc2305,pwm-min:
++    description:
++      Min pwm of emc2305
++    maxItems: 1
++  emc2305,pwm-max:
++    description:
++      Max pwm of emc2305
++    maxItems: 1
++  emc2305,pwm-channel:
++    description:
++      Max number of pwm channels
++    maxItems: 1
++  emcs205,max-state:
++    description:
++    maxItems: 1
++  emc2305,cooling-levels:
++    description:
++      Quantity of cooling level state.
++    maxItems: 1
++
++required:
++  - compatible
++
++optional:
++  - emc2305,min-pwm
++  - emc2305,max-pwm
++  - emc2305,pwm-channels
++  - emc2305,cooling-levels
++
++additionalProperties: false
++
++examples:
++  - |
++    fan {
++        emc2305,compatible = "microchip,emc2305";
++        emc2305,pwm-min = <0>;
++        emc2305,pwm-max = <255>;
++        emc2305,pwm-channel = <5>
++        emc2305,cooling-levels = <10>;
++    };
diff --git a/target/linux/bcm27xx/patches-5.15/950-0889-dtbindings-Fixup-microchip-emc2305.yaml-bindings.patch b/target/linux/bcm27xx/patches-5.15/950-0889-dtbindings-Fixup-microchip-emc2305.yaml-bindings.patch
new file mode 100644
index 0000000000..a7600a1b1c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0889-dtbindings-Fixup-microchip-emc2305.yaml-bindings.patch
@@ -0,0 +1,40 @@
+From 1d444a409ce590c9ae4e800585bd36748fb99a10 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 10 May 2022 14:03:30 +0100
+Subject: [PATCH] dtbindings: Fixup microchip,emc2305.yaml bindings
+
+The bindings submitted to mainline had some issues, so fix them up.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../devicetree/bindings/hwmon/microchip,emc2305.yaml      | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
++++ b/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
+@@ -5,13 +5,13 @@
+ $id: http://devicetree.org/schemas/hwmon/emc2305.yaml#
+ $schema: http://devicetree.org/meta-schemas/core.yaml#
+ 
+-title: Microchip EMC2305 RPM-based PWM Fan Speed Controller
++title: Microchip EMC230[1|2|3|5] RPM-based PWM Fan Speed Controller
+ 
+ properties:
+   compatible:
+     enum:
+-      - microcip,emc2305
+-
++      - microchip,emc2305
++      - microchip,emc2301
+   emc2305,pwm-min:
+     description:
+       Min pwm of emc2305
+@@ -46,7 +46,7 @@ additionalProperties: false
+ examples:
+   - |
+     fan {
+-        emc2305,compatible = "microchip,emc2305";
++        compatible = "microchip,emc2305";
+         emc2305,pwm-min = <0>;
+         emc2305,pwm-max = <255>;
+         emc2305,pwm-channel = <5>
diff --git a/target/linux/bcm27xx/patches-5.15/950-0890-hwmon-emc2305-add-support-for-EMC2301-2-3-5-RPM-base.patch b/target/linux/bcm27xx/patches-5.15/950-0890-hwmon-emc2305-add-support-for-EMC2301-2-3-5-RPM-base.patch
new file mode 100644
index 0000000000..9c47e48843
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0890-hwmon-emc2305-add-support-for-EMC2301-2-3-5-RPM-base.patch
@@ -0,0 +1,686 @@
+From 23395c6df3c8ef7b6e43b4968de402169ec7c755 Mon Sep 17 00:00:00 2001
+From: Michael Shych <michaelsh@nvidia.com>
+Date: Sat, 30 Apr 2022 14:49:03 +0300
+Subject: [PATCH] hwmon: (emc2305) add support for EMC2301/2/3/5
+ RPM-based PWM Fan Speed Controller.
+
+Submitted to linux-hwmon mailing list at
+https://patchwork.kernel.org/project/linux-hwmon/patch/20220430114905.53448-2-michaelsh@nvidia.com/
+
+Add driver for Microchip EMC2301/2/3/5 RPM-based PWM Fan Speed Controller.
+Modify Makefile and Kconfig to support Microchip EMC2305 RPM-based
+PWM Fan Speed Controller.
+
+Signed-off-by: Michael Shych <michaelsh@nvidia.com>
+Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
+---
+ drivers/hwmon/Kconfig   |  13 +
+ drivers/hwmon/Makefile  |   1 +
+ drivers/hwmon/emc2305.c | 629 ++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 643 insertions(+)
+ create mode 100644 drivers/hwmon/emc2305.c
+
+--- a/drivers/hwmon/Kconfig
++++ b/drivers/hwmon/Kconfig
+@@ -1684,6 +1684,19 @@ config SENSORS_EMC2103
+ 	  This driver can also be built as a module. If so, the module
+ 	  will be called emc2103.
+ 
++config SENSORS_EMC2305
++	tristate "Microchip EMC2305 and compatible EMC2301/2/3"
++	depends on I2C
++	imply THERMAL
++	help
++	  If you say yes here you get support for the Microchip EMC2305
++	  fan controller chips.
++	  The Microchip EMC2305 is a fan controller for up to 5 fans.
++	  Fan rotation speeds are reported in RPM.
++
++	  This driver can also be built as a module.  If so, the module
++	  will be called emc2305.
++
+ config SENSORS_EMC6W201
+ 	tristate "SMSC EMC6W201"
+ 	depends on I2C
+--- a/drivers/hwmon/Makefile
++++ b/drivers/hwmon/Makefile
+@@ -67,6 +67,7 @@ obj-$(CONFIG_SENSORS_DS620)	+= ds620.o
+ obj-$(CONFIG_SENSORS_DS1621)	+= ds1621.o
+ obj-$(CONFIG_SENSORS_EMC1403)	+= emc1403.o
+ obj-$(CONFIG_SENSORS_EMC2103)	+= emc2103.o
++obj-$(CONFIG_SENSORS_EMC2305)	+= emc2305.o
+ obj-$(CONFIG_SENSORS_EMC6W201)	+= emc6w201.o
+ obj-$(CONFIG_SENSORS_F71805F)	+= f71805f.o
+ obj-$(CONFIG_SENSORS_F71882FG)	+= f71882fg.o
+--- /dev/null
++++ b/drivers/hwmon/emc2305.c
+@@ -0,0 +1,629 @@
++// SPDX-License-Identifier: GPL-2.0+
++/*
++ * Hardware monitoring driver for EMC2305 fan controller
++ *
++ * Copyright (C) 2022 Nvidia Technologies Ltd and Delta Networks, Inc.
++ */
++
++#include <linux/err.h>
++#include <linux/hwmon.h>
++#include <linux/hwmon-sysfs.h>
++#include <linux/i2c.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/thermal.h>
++#include <linux/version.h>
++
++static const unsigned short
++emc2305_normal_i2c[] = { 0x27, 0x2c, 0x2d, 0x2e, 0x2f, 0x4c, 0x4d, I2C_CLIENT_END };
++
++#define EMC2305_REG_DRIVE_FAIL_STATUS	0x27
++#define EMC2305_REG_DEVICE		0xfd
++#define EMC2305_REG_VENDOR		0xfe
++#define EMC2305_FAN_MAX			0xff
++#define EMC2305_FAN_MIN			0x00
++#define EMC2305_FAN_MAX_STATE		10
++#define EMC2305_DEVICE			0x34
++#define EMC2305_VENDOR			0x5d
++#define EMC2305_REG_PRODUCT_ID		0xfd
++#define EMC2305_TACH_REGS_UNUSE_BITS	3
++#define EMC2305_TACH_CNT_MULTIPLIER	0x02
++#define EMC2305_PWM_MAX			5
++#define EMC2305_PWM_CHNL_CMN		0
++
++#define EMC2305_PWM_DUTY2STATE(duty, max_state, pwm_max) \
++	(DIV_ROUND_CLOSEST((duty) * (max_state), (pwm_max)))
++#define EMC2305_PWM_STATE2DUTY(state, max_state, pwm_max) \
++	(DIV_ROUND_CLOSEST((state) * (pwm_max), (max_state)))
++
++/* Factor by equations [2] and [3] from data sheet; valid for fans where the number of edges
++ * equal (poles * 2 + 1).
++ */
++#define EMC2305_RPM_FACTOR		3932160
++
++#define EMC2305_REG_FAN_DRIVE(n) (0x30 + 0x10 * (n))
++#define EMC2305_REG_FAN_MIN_DRIVE(n) (0x38 + 0x10 * (n))
++#define EMC2305_REG_FAN_TACH(n) (0x3e + 0x10 * (n))
++
++enum emc230x_product_id {
++	EMC2305 = 0x34,
++	EMC2303 = 0x35,
++	EMC2302 = 0x36,
++	EMC2301 = 0x37,
++};
++
++static const struct i2c_device_id emc2305_ids[] = {
++	{ "emc2305", 0 },
++	{ "emc2303", 0 },
++	{ "emc2302", 0 },
++	{ "emc2301", 0 },
++	{ }
++};
++MODULE_DEVICE_TABLE(i2c, emc2305_ids);
++
++static const struct of_device_id emc2305_dt_ids[] = {
++	{ .compatible = "smsc,emc2305" },
++	{ }
++};
++MODULE_DEVICE_TABLE(of, emc2305_dt_ids);
++
++/**
++ * @cdev: cooling device;
++ * @curr_state: cooling current state;
++ * @last_hwmon_state: last cooling state updated by hwmon subsystem;
++ * @last_thermal_state: last cooling state updated by thermal subsystem;
++ *
++ * The 'last_hwmon_state' and 'last_thermal_state' fields are provided to support fan low limit
++ * speed feature. The purpose of this feature is to provides ability to limit fan speed
++ * according to some system wise considerations, like absence of some replaceable units (PSU or
++ * line cards), high system ambient temperature, unreliable transceivers temperature sensing or
++ * some other factors which indirectly impacts system's airflow
++ * Fan low limit feature is supported through 'hwmon' interface: 'hwmon' 'pwm' attribute is
++ * used for setting low limit for fan speed in case 'thermal' subsystem is configured in
++ * kernel. In this case setting fan speed through 'hwmon' will never let the 'thermal'
++ * subsystem to select a lower duty cycle than the duty cycle selected with the 'pwm'
++ * attribute.
++ * From other side, fan speed is to be updated in hardware through 'pwm' only in case the
++ * requested fan speed is above last speed set by 'thermal' subsystem, otherwise requested fan
++ * speed will be just stored with no PWM update.
++ */
++struct emc2305_cdev_data {
++	struct thermal_cooling_device *cdev;
++	unsigned int cur_state;
++	unsigned long last_hwmon_state;
++	unsigned long last_thermal_state;
++};
++
++/**
++ * @client: i2c client;
++ * @hwmon_dev: hwmon device;
++ * @max_state: maximum cooling state of the cooling device;
++ * @pwm_max: maximum PWM;
++ * @pwm_min: minimum PWM;
++ * @pwm_channel: maximum number of PWM channels;
++ * @cdev_data: array of cooling devices data;
++ */
++struct emc2305_data {
++	struct i2c_client *client;
++	struct device *hwmon_dev;
++	u8 max_state;
++	u8 pwm_max;
++	u8 pwm_min;
++	u8 pwm_num;
++	u8 pwm_channel;
++	struct emc2305_cdev_data cdev_data[EMC2305_PWM_MAX];
++};
++
++static char *emc2305_fan_name[] = {
++	"emc2305_fan",
++	"emc2305_fan1",
++	"emc2305_fan2",
++	"emc2305_fan3",
++	"emc2305_fan4",
++	"emc2305_fan5",
++};
++
++static int emc2305_get_max_channel(struct emc2305_data *data)
++{
++	if (data->pwm_channel == EMC2305_PWM_CHNL_CMN)
++		return data->pwm_num;
++	else
++		return data->pwm_channel;
++}
++
++static int emc2305_get_cdev_idx(struct thermal_cooling_device *cdev)
++{
++	struct emc2305_data *data = cdev->devdata;
++	size_t len = strlen(cdev->type);
++	int ret;
++
++	if (len <= 0)
++		return -EINVAL;
++
++	/* Retuns index of cooling device 0..4 in case of separate PWM setting.
++	 * Zero index is used in case of one common PWM setting.
++	 * If the mode is set as EMC2305_PWM_CHNL_CMN, all PWMs are to be bound
++	 * to the common thermal zone and should work at the same speed
++	 * to perform cooling for the same thermal junction.
++	 * Otherwise, return specific channel that will be used in bound
++	 * related PWM to the thermal zone.
++	 */
++	if (data->pwm_channel == EMC2305_PWM_CHNL_CMN)
++		return 0;
++
++	ret = cdev->type[len - 1];
++	switch (ret) {
++	case '1' ... '5':
++		return ret - '1';
++	default:
++		break;
++	}
++	return -EINVAL;
++}
++
++static int emc2305_get_cur_state(struct thermal_cooling_device *cdev, unsigned long *state)
++{
++	int cdev_idx;
++	struct emc2305_data *data = cdev->devdata;
++
++	cdev_idx = emc2305_get_cdev_idx(cdev);
++	if (cdev_idx < 0)
++		return cdev_idx;
++
++	*state = data->cdev_data[cdev_idx].cur_state;
++	return 0;
++}
++
++static int emc2305_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state)
++{
++	struct emc2305_data *data = cdev->devdata;
++	*state = data->max_state;
++	return 0;
++}
++
++static int emc2305_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state)
++{
++	int cdev_idx;
++	struct emc2305_data *data = cdev->devdata;
++	struct i2c_client *client = data->client;
++	u8 val, i;
++	
++	if (state > data->max_state)
++		return -EINVAL;
++
++	cdev_idx =  emc2305_get_cdev_idx(cdev);
++	if (cdev_idx < 0)
++		return cdev_idx;
++
++	/* Save thermal state. */
++	data->cdev_data[cdev_idx].last_thermal_state = state;
++	state = max_t(unsigned long, state, data->cdev_data[cdev_idx].last_hwmon_state);
++
++	val = EMC2305_PWM_STATE2DUTY(state, data->max_state, data->pwm_max);
++	if (val > EMC2305_FAN_MAX)
++		return -EINVAL;
++
++	data->cdev_data[cdev_idx].cur_state = state;
++	if (data->pwm_channel == EMC2305_PWM_CHNL_CMN)
++	/* Set the same PWM value in all channels 
++	 * if common PWM channel is used.
++	 */
++		for (i = 0; i < data->pwm_num; i++)
++			i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_DRIVE(i), val);
++	else
++		i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_DRIVE(cdev_idx), val);
++	
++	return 0;
++}
++
++static const struct thermal_cooling_device_ops emc2305_cooling_ops = {
++	.get_max_state = emc2305_get_max_state,
++	.get_cur_state = emc2305_get_cur_state,
++	.set_cur_state = emc2305_set_cur_state,
++};
++
++static int emc2305_show_fault(struct device *dev, int channel)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	struct i2c_client *client = data->client;
++	int status_reg;
++
++	status_reg = i2c_smbus_read_byte_data(client, EMC2305_REG_DRIVE_FAIL_STATUS);
++	return status_reg & (1 << channel) ? 1 : 0;
++}
++
++static int emc2305_show_fan(struct device *dev, int channel)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	struct i2c_client *client = data->client;
++	int ret;
++
++	ret = i2c_smbus_read_word_swapped(client, EMC2305_REG_FAN_TACH(channel));
++	if (ret < 0)
++		return ret;
++
++	ret = ret >> EMC2305_TACH_REGS_UNUSE_BITS;
++	return EMC2305_RPM_FACTOR * EMC2305_TACH_CNT_MULTIPLIER / (ret > 0 ? ret : 1);
++}
++
++static int emc2305_show_pwm(struct device *dev, int channel)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	struct i2c_client *client = data->client;
++
++	return i2c_smbus_read_byte_data(client, EMC2305_REG_FAN_DRIVE(channel));
++}
++
++static int emc2305_set_pwm(struct device *dev, long val, int channel)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	struct i2c_client *client = data->client;
++
++	if (val < data->pwm_min || val > data->pwm_max)
++		return -EINVAL;
++
++	i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_DRIVE(channel), val);
++	data->cdev_data[channel].cur_state = EMC2305_PWM_DUTY2STATE(val, data->max_state,
++								    data->pwm_max);
++	return 0;
++}
++
++static int emc2305_get_tz_of(struct device *dev)
++{
++	struct device_node *np = dev->of_node;
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	int ret = 0;
++
++	/* OF parameters are optional - overwrite default setting 
++	 * if some of them are provided.
++	 */
++
++	if (of_find_property(np, "emc2305,cooling-levels", NULL)) {
++		ret = of_property_read_u8(np, "emc2305,cooling-levels", &data->max_state);
++		if (ret)
++			return ret;
++	}
++
++	if (of_find_property(np, "emc2305,pwm-max", NULL)) {
++		ret = of_property_read_u8(np, "emc2305,pwm-max", &data->pwm_max);
++		if (ret)
++			return ret;
++	}
++
++	if (of_find_property(np, "emc2305,pwm-min", NULL)) {
++		ret = of_property_read_u8(np, "emc2305,pwm-min", &data->pwm_min);
++		if (ret)
++			return ret;
++	}
++
++	/* Not defined or 0 means one thermal zone over all colling devices. 
++	 * Otherwise - separted thermal zones for each PWM channel.
++	 */
++	if (of_find_property(np, "emc2305,pwm-channel", NULL)) {
++		ret = of_property_read_u8(np, "emc2305,pwm-channel", &data->pwm_channel);
++		if (ret)
++			return ret;
++	}
++
++	return ret;
++}
++
++static int emc2305_set_single_tz(struct device *dev, int idx)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	long pwm = data->pwm_max;
++	int cdev_idx;
++	
++	cdev_idx = (idx) ? idx - 1 : 0;
++
++	if (dev->of_node)
++		data->cdev_data[cdev_idx].cdev =
++			devm_thermal_of_cooling_device_register(dev, dev->of_node,
++								emc2305_fan_name[idx], data,
++								&emc2305_cooling_ops);
++	else
++		data->cdev_data[cdev_idx].cdev =
++			thermal_cooling_device_register(emc2305_fan_name[idx], data, 
++							&emc2305_cooling_ops);
++
++	if (IS_ERR(data->cdev_data[cdev_idx].cdev)) {
++		dev_err(dev, "Failed to register cooling device %s\n", emc2305_fan_name[idx]);
++		return PTR_ERR(data->cdev_data[cdev_idx].cdev);
++	}
++	emc2305_set_pwm(dev, pwm, cdev_idx);
++	data->cdev_data[cdev_idx].cur_state = data->max_state;
++	/* Set minimal PWM speed. */
++	data->cdev_data[cdev_idx].last_hwmon_state = EMC2305_PWM_DUTY2STATE(data->pwm_min,
++									    data->max_state,
++									    data->pwm_max);
++	return 0;
++}
++
++static int emc2305_set_tz(struct device *dev)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	int i, ret;
++
++	if (data->pwm_channel == EMC2305_PWM_CHNL_CMN)
++		return emc2305_set_single_tz(dev, 0);
++
++	for (i = 0; i < data->pwm_channel; i++) {
++		ret = emc2305_set_single_tz(dev, i + 1);
++		if (ret)
++			goto thermal_cooling_device_register_fail;
++	}
++	return 0;
++
++thermal_cooling_device_register_fail:
++	emc2305_unset_tz(dev);
++	return ret;
++}
++
++static void emc2305_unset_tz(struct device *dev)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	int i;
++
++	/* Unregister cooling device in case they have been registered by
++	 * thermal_cooling_device_unregister(). No need for clean-up flow in case they 
++	 * have been registered by devm_thermal_of_cooling_device_register()
++	 */
++	if (!dev->of_node) {
++		for (i = 0; i < EMC2305_PWM_MAX; i++)
++			if (data->cdev_data[i].cdev)
++				thermal_cooling_device_unregister(data->cdev_data[i].cdev);
++	}
++}
++
++static umode_t
++emc2305_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel)
++{
++	int max_channel = emc2305_get_max_channel((struct emc2305_data *)data);
++
++	/* Don't show channels which are not physically connected. */
++	if ((channel + 1) > max_channel)
++		return 0;
++	switch (type) {
++	case hwmon_fan:
++		switch (attr) {
++		case hwmon_fan_input:
++			return 0444;
++		case hwmon_fan_fault:
++			return 0444;
++		default:
++			break;
++		}
++		break;
++	case hwmon_pwm:
++		switch (attr) {
++		case hwmon_pwm_input:
++			return 0644;
++		default:
++			break;
++		}
++		break;
++	default:
++		break;
++	}
++
++	return 0;
++};
++
++static int
++emc2305_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long val)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++
++	switch (type) {
++	case hwmon_pwm:
++		switch (attr) {
++		case hwmon_pwm_input:
++			/* If thermal is configured - handle PWM limit setting. */
++			if (IS_REACHABLE(CONFIG_THERMAL)) {
++				data->cdev_data[channel].last_hwmon_state =
++					EMC2305_PWM_DUTY2STATE(val, data->max_state, data->pwm_max);
++				/* Update PWM only in case requested state is not less than the
++				 * last thermal state.
++				 */
++				if (data->cdev_data[channel].last_hwmon_state >=
++				    data->cdev_data[channel].last_thermal_state)
++					return emc2305_set_cur_state(data->cdev_data[channel].cdev,
++							data->cdev_data[channel].last_hwmon_state);
++				return 0;
++			}
++			return emc2305_set_pwm(dev, val, channel);
++		default:
++			break;
++		}
++		break;
++	default:
++		break;
++	}
++
++	return -EOPNOTSUPP;
++};
++
++static int
++emc2305_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val)
++{
++	int ret;
++
++	switch (type) {
++	case hwmon_fan:
++		switch (attr) {
++		case hwmon_fan_input:
++			ret = emc2305_show_fan(dev, channel);
++			if (ret < 0)
++				return ret;
++			*val = ret;
++			return 0;
++		case hwmon_fan_fault:
++			ret = emc2305_show_fault(dev, channel);
++			if (ret < 0)
++				return ret;
++			*val = ret;
++			return 0;
++		default:
++			break;
++		}
++		break;
++	case hwmon_pwm:
++		switch (attr) {
++		case hwmon_pwm_input:
++			ret = emc2305_show_pwm(dev, channel);
++			if (ret < 0)
++				return ret;
++			*val = ret;
++			return 0;
++		default:
++			break;
++		}
++		break;
++	default:
++		break;
++	}
++
++	return -EOPNOTSUPP;
++};
++
++static const struct hwmon_ops emc2305_ops = {
++	.is_visible = emc2305_is_visible,
++	.read = emc2305_read,
++	.write = emc2305_write,
++};
++
++static const struct hwmon_channel_info *emc2305_info[] = {
++	HWMON_CHANNEL_INFO(fan,
++			   HWMON_F_INPUT | HWMON_F_FAULT,
++			   HWMON_F_INPUT | HWMON_F_FAULT,
++			   HWMON_F_INPUT | HWMON_F_FAULT,
++			   HWMON_F_INPUT | HWMON_F_FAULT,
++			   HWMON_F_INPUT | HWMON_F_FAULT),
++	HWMON_CHANNEL_INFO(pwm,
++			   HWMON_PWM_INPUT,
++			   HWMON_PWM_INPUT,
++			   HWMON_PWM_INPUT,
++			   HWMON_PWM_INPUT,
++			   HWMON_PWM_INPUT),
++	NULL
++};
++
++static const struct hwmon_chip_info emc2305_chip_info = {
++	.ops = &emc2305_ops,
++	.info = emc2305_info,
++};
++
++static int emc2305_identify(struct device *dev)
++{
++	struct i2c_client *client = to_i2c_client(dev);
++	struct emc2305_data *data = i2c_get_clientdata(client);
++	int ret;
++
++	ret = i2c_smbus_read_byte_data(client, EMC2305_REG_PRODUCT_ID);
++	if (ret < 0)
++		return ret;
++
++	switch (ret) {
++	case EMC2305:
++		data->pwm_num = 5;
++		break;
++	case EMC2303:
++		data->pwm_num = 3;
++		break;
++	case EMC2302:
++		data->pwm_num = 2;
++		break;
++	case EMC2301:
++		data->pwm_num = 1;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int emc2305_probe(struct i2c_client *client, const struct i2c_device_id *id)
++{
++	struct i2c_adapter *adapter = client->adapter;
++	struct device *dev = &client->dev;
++	struct emc2305_data *data;
++	int vendor, device;
++	int ret;
++	int i;
++
++	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
++		return -ENODEV;
++
++	vendor = i2c_smbus_read_byte_data(client, EMC2305_REG_VENDOR);
++	if (vendor != EMC2305_VENDOR)
++		return -ENODEV;
++
++	device = i2c_smbus_read_byte_data(client, EMC2305_REG_DEVICE);
++	if (device != EMC2305_DEVICE)
++		return -ENODEV;
++
++	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
++	if (!data)
++		return -ENOMEM;
++
++	i2c_set_clientdata(client, data);
++	data->client = client;
++
++	ret = emc2305_identify(dev);
++	if (ret)
++		return ret;
++
++	data->max_state = EMC2305_FAN_MAX_STATE;
++	data->pwm_max = EMC2305_FAN_MAX;
++	data->pwm_min = EMC2305_FAN_MIN;
++	data->pwm_channel = EMC2305_PWM_CHNL_CMN;
++	if (dev->of_node) {
++		ret = emc2305_get_tz_of(dev);
++		if (ret < 0)
++			return ret;
++	}
++
++	data->hwmon_dev = devm_hwmon_device_register_with_info(dev, "emc2305", data,
++							       &emc2305_chip_info, NULL);
++	if (IS_ERR(data->hwmon_dev))
++		return PTR_ERR(data->hwmon_dev);
++
++	if (IS_REACHABLE(CONFIG_THERMAL)) {
++		ret = emc2305_set_tz(dev);
++		if (ret != 0)
++			return ret;
++	}
++
++	for (i = 0; i < data->pwm_num; i++)
++		i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_MIN_DRIVE(i), data->pwm_min);
++
++	return 0;
++}
++
++static int emc2305_remove(struct i2c_client *client)
++{
++	struct device *dev = &client->dev;
++
++	if (IS_REACHABLE(CONFIG_THERMAL))
++		emc2305_unset_tz(dev);
++	return 0;
++}
++
++static struct i2c_driver emc2305_driver = {
++	.class  = I2C_CLASS_HWMON,
++	.driver = {
++		.name = "emc2305",
++		.of_match_table = emc2305_dt_ids,
++	},
++	.probe    = emc2305_probe,
++	.remove	  = emc2305_remove,
++	.id_table = emc2305_ids,
++	.address_list = emc2305_normal_i2c,
++};
++
++module_i2c_driver(emc2305_driver);
++
++MODULE_AUTHOR("Nvidia");
++MODULE_DESCRIPTION("Microchip EMC2305 fan controller driver");
++MODULE_LICENSE("GPL");
diff --git a/target/linux/bcm27xx/patches-5.15/950-0891-hwmon-emc2305-fixups-for-driver-submitted-to-mailing.patch b/target/linux/bcm27xx/patches-5.15/950-0891-hwmon-emc2305-fixups-for-driver-submitted-to-mailing.patch
new file mode 100644
index 0000000000..cade5681ba
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0891-hwmon-emc2305-fixups-for-driver-submitted-to-mailing.patch
@@ -0,0 +1,226 @@
+From 50fe870273543a821f25e7f78ea7389183d819e7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 5 May 2022 15:46:07 +0100
+Subject: [PATCH] hwmon: emc2305: fixups for driver submitted to
+ mailing lists
+
+The driver had a number of issues, checkpatch warnings/errors,
+and other limitations, so fix these up to make it usable.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/hwmon/emc2305.c | 86 ++++++++++++++++++++++++-----------------
+ 1 file changed, 50 insertions(+), 36 deletions(-)
+
+--- a/drivers/hwmon/emc2305.c
++++ b/drivers/hwmon/emc2305.c
+@@ -1,6 +1,6 @@
+ // SPDX-License-Identifier: GPL-2.0+
+ /*
+- * Hardware monitoring driver for EMC2305 fan controller
++ * Hardware monitoring driver for Microchip EMC2305 fan controller
+  *
+  * Copyright (C) 2022 Nvidia Technologies Ltd and Delta Networks, Inc.
+  */
+@@ -17,17 +17,17 @@
+ static const unsigned short
+ emc2305_normal_i2c[] = { 0x27, 0x2c, 0x2d, 0x2e, 0x2f, 0x4c, 0x4d, I2C_CLIENT_END };
+ 
++#define EMC2305_REG_FAN_STATUS		0x24
++#define EMC2305_REG_FAN_STALL_STATUS	0x25
+ #define EMC2305_REG_DRIVE_FAIL_STATUS	0x27
+-#define EMC2305_REG_DEVICE		0xfd
+ #define EMC2305_REG_VENDOR		0xfe
+ #define EMC2305_FAN_MAX			0xff
+ #define EMC2305_FAN_MIN			0x00
+ #define EMC2305_FAN_MAX_STATE		10
+-#define EMC2305_DEVICE			0x34
+ #define EMC2305_VENDOR			0x5d
+ #define EMC2305_REG_PRODUCT_ID		0xfd
+ #define EMC2305_TACH_REGS_UNUSE_BITS	3
+-#define EMC2305_TACH_CNT_MULTIPLIER	0x02
++#define EMC2305_TACH_CNT_MULTIPLIER	1	/* Set by FAN_CFG RNGx bits */
+ #define EMC2305_PWM_MAX			5
+ #define EMC2305_PWM_CHNL_CMN		0
+ 
+@@ -42,6 +42,7 @@ emc2305_normal_i2c[] = { 0x27, 0x2c, 0x2
+ #define EMC2305_RPM_FACTOR		3932160
+ 
+ #define EMC2305_REG_FAN_DRIVE(n) (0x30 + 0x10 * (n))
++#define EMC2305_REG_FAN_CFG(n) (0x32 + 0x10 * (n))
+ #define EMC2305_REG_FAN_MIN_DRIVE(n) (0x38 + 0x10 * (n))
+ #define EMC2305_REG_FAN_TACH(n) (0x3e + 0x10 * (n))
+ 
+@@ -62,7 +63,8 @@ static const struct i2c_device_id emc230
+ MODULE_DEVICE_TABLE(i2c, emc2305_ids);
+ 
+ static const struct of_device_id emc2305_dt_ids[] = {
+-	{ .compatible = "smsc,emc2305" },
++	{ .compatible = "microchip,emc2305" },
++	{ .compatible = "microchip,emc2301" },
+ 	{ }
+ };
+ MODULE_DEVICE_TABLE(of, emc2305_dt_ids);
+@@ -187,7 +189,7 @@ static int emc2305_set_cur_state(struct
+ 	struct emc2305_data *data = cdev->devdata;
+ 	struct i2c_client *client = data->client;
+ 	u8 val, i;
+-	
++
+ 	if (state > data->max_state)
+ 		return -EINVAL;
+ 
+@@ -200,19 +202,20 @@ static int emc2305_set_cur_state(struct
+ 	state = max_t(unsigned long, state, data->cdev_data[cdev_idx].last_hwmon_state);
+ 
+ 	val = EMC2305_PWM_STATE2DUTY(state, data->max_state, data->pwm_max);
++
+ 	if (val > EMC2305_FAN_MAX)
+ 		return -EINVAL;
+ 
+ 	data->cdev_data[cdev_idx].cur_state = state;
+ 	if (data->pwm_channel == EMC2305_PWM_CHNL_CMN)
+-	/* Set the same PWM value in all channels 
++	/* Set the same PWM value in all channels
+ 	 * if common PWM channel is used.
+ 	 */
+ 		for (i = 0; i < data->pwm_num; i++)
+ 			i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_DRIVE(i), val);
+ 	else
+ 		i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_DRIVE(cdev_idx), val);
+-	
++
+ 	return 0;
+ }
+ 
+@@ -274,7 +277,7 @@ static int emc2305_get_tz_of(struct devi
+ 	struct emc2305_data *data = dev_get_drvdata(dev);
+ 	int ret = 0;
+ 
+-	/* OF parameters are optional - overwrite default setting 
++	/* OF parameters are optional - overwrite default setting
+ 	 * if some of them are provided.
+ 	 */
+ 
+@@ -296,8 +299,8 @@ static int emc2305_get_tz_of(struct devi
+ 			return ret;
+ 	}
+ 
+-	/* Not defined or 0 means one thermal zone over all colling devices. 
+-	 * Otherwise - separted thermal zones for each PWM channel.
++	/* Not defined or 0 means one thermal zone over all cooling devices.
++	 * Otherwise - separated thermal zones for each PWM channel.
+ 	 */
+ 	if (of_find_property(np, "emc2305,pwm-channel", NULL)) {
+ 		ret = of_property_read_u8(np, "emc2305,pwm-channel", &data->pwm_channel);
+@@ -313,7 +316,7 @@ static int emc2305_set_single_tz(struct
+ 	struct emc2305_data *data = dev_get_drvdata(dev);
+ 	long pwm = data->pwm_max;
+ 	int cdev_idx;
+-	
++
+ 	cdev_idx = (idx) ? idx - 1 : 0;
+ 
+ 	if (dev->of_node)
+@@ -323,7 +326,7 @@ static int emc2305_set_single_tz(struct
+ 								&emc2305_cooling_ops);
+ 	else
+ 		data->cdev_data[cdev_idx].cdev =
+-			thermal_cooling_device_register(emc2305_fan_name[idx], data, 
++			thermal_cooling_device_register(emc2305_fan_name[idx], data,
+ 							&emc2305_cooling_ops);
+ 
+ 	if (IS_ERR(data->cdev_data[cdev_idx].cdev)) {
+@@ -339,6 +342,22 @@ static int emc2305_set_single_tz(struct
+ 	return 0;
+ }
+ 
++static void emc2305_unset_tz(struct device *dev)
++{
++	struct emc2305_data *data = dev_get_drvdata(dev);
++	int i;
++
++	/* Unregister cooling device in case they have been registered by
++	 * thermal_cooling_device_unregister(). No need for clean-up flow in case they
++	 * have been registered by devm_thermal_of_cooling_device_register()
++	 */
++	if (!dev->of_node) {
++		for (i = 0; i < EMC2305_PWM_MAX; i++)
++			if (data->cdev_data[i].cdev)
++				thermal_cooling_device_unregister(data->cdev_data[i].cdev);
++	}
++}
++
+ static int emc2305_set_tz(struct device *dev)
+ {
+ 	struct emc2305_data *data = dev_get_drvdata(dev);
+@@ -359,22 +378,6 @@ thermal_cooling_device_register_fail:
+ 	return ret;
+ }
+ 
+-static void emc2305_unset_tz(struct device *dev)
+-{
+-	struct emc2305_data *data = dev_get_drvdata(dev);
+-	int i;
+-
+-	/* Unregister cooling device in case they have been registered by
+-	 * thermal_cooling_device_unregister(). No need for clean-up flow in case they 
+-	 * have been registered by devm_thermal_of_cooling_device_register()
+-	 */
+-	if (!dev->of_node) {
+-		for (i = 0; i < EMC2305_PWM_MAX; i++)
+-			if (data->cdev_data[i].cdev)
+-				thermal_cooling_device_unregister(data->cdev_data[i].cdev);
+-	}
+-}
+-
+ static umode_t
+ emc2305_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel)
+ {
+@@ -548,7 +551,7 @@ static int emc2305_probe(struct i2c_clie
+ 	struct i2c_adapter *adapter = client->adapter;
+ 	struct device *dev = &client->dev;
+ 	struct emc2305_data *data;
+-	int vendor, device;
++	int vendor;
+ 	int ret;
+ 	int i;
+ 
+@@ -559,10 +562,6 @@ static int emc2305_probe(struct i2c_clie
+ 	if (vendor != EMC2305_VENDOR)
+ 		return -ENODEV;
+ 
+-	device = i2c_smbus_read_byte_data(client, EMC2305_REG_DEVICE);
+-	if (device != EMC2305_DEVICE)
+-		return -ENODEV;
+-
+ 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ 	if (!data)
+ 		return -ENOMEM;
+@@ -595,8 +594,23 @@ static int emc2305_probe(struct i2c_clie
+ 			return ret;
+ 	}
+ 
+-	for (i = 0; i < data->pwm_num; i++)
+-		i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_MIN_DRIVE(i), data->pwm_min);
++	for (i = 0; i < data->pwm_num; i++) {
++		u8 val;
++
++		i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_MIN_DRIVE(i),
++					  data->pwm_min);
++
++		val = i2c_smbus_read_byte_data(client, EMC2305_REG_FAN_CFG(i));
++		/* Set RNGx so minRPM=500 */
++		val &= ~0x60;
++		i2c_smbus_write_byte_data(client, EMC2305_REG_FAN_CFG(i), val);
++	}
++
++	/* Acknowledge any existing faults. Stops the device responding on the
++	 * SMBus alert address.
++	 */
++	i2c_smbus_read_byte_data(client, EMC2305_REG_FAN_STALL_STATUS);
++	i2c_smbus_read_byte_data(client, EMC2305_REG_FAN_STATUS);
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch b/target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch
new file mode 100644
index 0000000000..ed542db83e
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0892-docs-hwmon-add-emc2305.rst-to-docs.patch
@@ -0,0 +1,60 @@
+From 653ef165247824be27e900ab28d1f8aa74c09604 Mon Sep 17 00:00:00 2001
+From: Michael Shych <michaelsh@nvidia.com>
+Date: Sat, 30 Apr 2022 14:49:05 +0300
+Subject: [PATCH] docs: hwmon: add emc2305.rst to docs
+
+Submitted to linux-hwmon mailing list at
+https://patchwork.kernel.org/project/linux-hwmon/patch/20220430114905.53448-4-michaelsh@nvidia.com/
+
+Add description of emc2305 driver.
+
+Signed-off-by: Michael Shych <michaelsh@nvidia.com>
+Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
+---
+ Documentation/hwmon/emc2305.rst | 40 +++++++++++++++++++++++++++++++++
+ 1 file changed, 40 insertions(+)
+ create mode 100644 Documentation/hwmon/emc2305.rst
+
+--- /dev/null
++++ b/Documentation/hwmon/emc2305.rst
+@@ -0,0 +1,40 @@
++.. SPDX-License-Identifier: GPL-2.0
++
++Kernel driver emc2305
++=====================
++
++Supported chips:
++   Microchip EMC2305, EMC2303, EMC2302, EMC2301
++
++   Addresses scanned: I2C 0x27, 0x2c, 0x2d, 0x2e, 0x2f, 0x4c, 0x4d
++   Prefixes: 'emc2305'
++
++   Datasheet: Publicly available at the Microchip website :
++      https://www.microchip.com/en-us/product/EMC2305
++
++Description:
++-----------
++This driver implements support for Microchip EMC2301/2/3/5 RPM-based PWM Fan Controller.
++The EMC2305 Fan Controller supports up to 5 independently controlled PWM fan drives.
++Fan rotation speeds are reported in RPM.
++The driver supports the RPM-based PWM control to keep a fan at the desired speed.
++The driver provides the possibility to have one common PWM interface for all FANs
++or up to the maximum available or configured independent PWMs.
++
++The driver provides the following sysfs interfaces in hwmon subsystem:
++
++================= == ===================================================
++fan[1-5]_fault    RO files for tachometers TACH1-TACH5 fault indication
++fan[1-5]_input    RO files for tachometers TACH1-TACH5 input (in RPM)
++pwm[1-5]          RW file for fan[1-5] target duty cycle (0..255)
++================= == ===================================================
++
++sysfs interfaces in thermal subsystem:
++
++================= == ========================================================================
++cur_state         RW file for the current cooling state of the cooling device (0..max_state)
++max_state         RO file for the maximum cooling state of the cooling device
++================= == ========================================================================
++
++Configuration is possible via device tree:
++Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
diff --git a/target/linux/bcm27xx/patches-5.15/950-0893-dtoverlays-Add-i2c-fan-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0893-dtoverlays-Add-i2c-fan-overlay.patch
new file mode 100644
index 0000000000..6687eacef5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0893-dtoverlays-Add-i2c-fan-overlay.patch
@@ -0,0 +1,165 @@
+From 4bf62f8dc97e24dadda64762ab47c299ac6eb8cb Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 3 May 2022 17:20:11 +0100
+Subject: [PATCH] dtoverlays: Add i2c-fan overlay
+
+Add an i2c-fan overlay, initially with support for the EMC2301
+fan controller found on the CM4IO board.
+Based on the overlay from Traverse Technologies, but modified for
+the EMC2305 driver submitted to linux-hwmon.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 33 +++++++
+ .../arm/boot/dts/overlays/i2c-fan-overlay.dts | 92 +++++++++++++++++++
+ 3 files changed, 126 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/i2c-fan-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -85,6 +85,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	hy28b-2017.dtbo \
+ 	i-sabre-q2m.dtbo \
+ 	i2c-bcm2708.dtbo \
++	i2c-fan.dtbo \
+ 	i2c-gpio.dtbo \
+ 	i2c-mux.dtbo \
+ 	i2c-pwm-pca9685a.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1530,6 +1530,39 @@ Load:   dtoverlay=i2c-bcm2708
+ Params: <None>
+ 
+ 
++Name:   i2c-fan
++Info:   Adds support for a number of I2C fan controllers
++Load:   dtoverlay=i2c-fan,<param>=<val>
++Params: addr                    Sets the address for the fan controller. Note
++                                that the device must be configured to use the
++                                specified address.
++
++        i2c0                    Choose the I2C0 bus on GPIOs 0&1
++
++        i2c_csi_dsi             Choose the I2C0 bus on GPIOs 44&45
++
++        minpwm                  PWM setting for the fan when the SoC is below
++                                mintemp (range 0-255. default 0)
++        maxpwm                  PWM setting for the fan when the SoC is above
++                                maxtemp (range 0-255. default 255)
++        midtemp                 Temperature (in millicelcius) at which the fan
++                                begins to speed up (default 50000)
++
++        midtemp_hyst            Temperature delta (in millicelcius) below
++                                mintemp at which the fan will drop to minrpm
++                                (default 2000)
++
++        maxtemp                 Temperature (in millicelcius) at which the fan
++                                will be held at maxrpm (default 70000)
++
++        maxtemp_hyst            Temperature delta (in millicelcius) below
++                                maxtemp at which the fan begins to slow down
++                                (default 2000)
++
++        emc2301                 Select the Microchip EMC230x controller family
++                                - EMC2301, EMC2302, EMC2303, EMC2305.
++
++
+ Name:   i2c-gpio
+ Info:   Adds support for software i2c controller on gpio pins
+ Load:   dtoverlay=i2c-gpio,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/i2c-fan-overlay.dts
+@@ -0,0 +1,92 @@
++// Definitions for I2C based sensors using the Industrial IO or HWMON interface.
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/thermal/thermal.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2cbus>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			emc2301: emc2301@2f {
++				compatible = "microchip,emc2301";
++				reg = <0x2f>;
++				status = "okay";
++				#cooling-cells = <0x02>;
++			};
++		};
++	};
++
++	frag100: fragment@100 {
++		target = <&i2c_arm>;
++		i2cbus: __overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@101 {
++		target = <&i2c0if>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	fragment@102 {
++		target = <&i2c0mux>;
++		__dormant__ {
++			status = "okay";
++		};
++	};
++
++	fragment@103 {
++		target = <&cpu_thermal>;
++		polling-delay = <2000>; /* milliseconds */
++		__overlay__ {
++			trips {
++				fanmid0: fanmid0 {
++					temperature = <50000>;
++					hysteresis = <2000>;
++					type = "active";
++				};
++				fanmax0: fanmax0 {
++					temperature = <75000>;
++					hysteresis = <2000>;
++					type = "active";
++				};
++			};
++			cooling-maps {
++				map0: map0 {
++					trip = <&fanmid0>;
++					cooling-device = <&emc2301 2 6>;
++				};
++				map1: map1 {
++					trip = <&fanmax0>;
++					cooling-device = <&emc2301 7 THERMAL_NO_LIMIT>;
++				};
++			};
++		};
++	};
++
++	__overrides__ {
++		i2c0 =		<&frag100>,"target:0=",<&i2c0>;
++		i2c_csi_dsi =	<&frag100>,"target:0=",<&i2c_csi_dsi>,
++				<0>,"+101+102";
++		addr =		<&emc2301>,"reg:0";
++		minpwm =	<&emc2301>,"emc2305,pwm-min;0";
++		maxpwm =	<&emc2301>,"emc2305,pwm-max;0";
++		midtemp =	<&fanmid0>,"temperature:0";
++		midtemp_hyst =	<&fanmid0>,"hysteresis:0";
++		maxtemp =	<&fanmax0>,"temperature:0";
++		maxtemp_hyst =	<&fanmax0>,"hysteresis:0";
++
++		emc2301 =	<0>,"+0",
++				<&map0>,"cooling-device:0=",<&emc2301>,
++				<&map1>,"cooling-device:0=",<&emc2301>;
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0894-SQUASH-overlays-arducam-pivariety-Strip-leading-zero.patch b/target/linux/bcm27xx/patches-5.15/950-0894-SQUASH-overlays-arducam-pivariety-Strip-leading-zero.patch
new file mode 100644
index 0000000000..8e79e55a71
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0894-SQUASH-overlays-arducam-pivariety-Strip-leading-zero.patch
@@ -0,0 +1,24 @@
+From 7bcf770fdf667082bcc1d821c1ee34ffd8ae1732 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 11 May 2022 15:35:50 +0100
+Subject: [PATCH] SQUASH: overlays: arducam-pivariety: Strip leading
+ zero
+
+Newer versions of dtc warn about node addresses with leading zeroes.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/arducam-pivariety-overlay.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm/boot/dts/overlays/arducam-pivariety-overlay.dts
++++ b/arch/arm/boot/dts/overlays/arducam-pivariety-overlay.dts
+@@ -13,7 +13,7 @@
+ 			#size-cells = <0>;
+ 			status = "okay";
+ 
+-			arducam_pivariety: arducam_pivariety@0c {
++			arducam_pivariety: arducam_pivariety@c {
+ 				compatible = "arducam,arducam-pivariety";
+ 				reg = <0x0c>;
+ 				status = "okay";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0895-overlays-Remove-other-leading-zeroes-from-node-addre.patch b/target/linux/bcm27xx/patches-5.15/950-0895-overlays-Remove-other-leading-zeroes-from-node-addre.patch
new file mode 100644
index 0000000000..1b0ae186d1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0895-overlays-Remove-other-leading-zeroes-from-node-addre.patch
@@ -0,0 +1,60 @@
+From 69d296df3d49ea14027519d351e35353d89ed745 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 11 May 2022 15:40:02 +0100
+Subject: [PATCH] overlays: Remove other leading zeroes from node
+ addresses
+
+Newer versions of dtc warn about node addresses with leading zeroes.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts | 2 +-
+ arch/arm/boot/dts/overlays/imx219-overlay.dts      | 2 +-
+ arch/arm/boot/dts/overlays/imx258-overlay.dts      | 2 +-
+ arch/arm/boot/dts/overlays/ov5647-overlay.dts      | 2 +-
+ 4 files changed, 4 insertions(+), 4 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
++++ b/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
+@@ -37,7 +37,7 @@
+ 			#size-cells = <0>;
+ 			status = "okay";
+ 
+-			sgtl5000@0a {
++			sgtl5000@a {
+ 				#sound-dai-cells = <0>;
+ 				compatible = "fsl,sgtl5000";
+ 				reg = <0x0a>;
+--- a/arch/arm/boot/dts/overlays/imx219-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
+@@ -64,7 +64,7 @@
+ 				};
+ 			};
+ 
+-			vcm: ad5398@0c {
++			vcm: ad5398@c {
+ 				compatible = "adi,ad5398";
+ 				reg = <0x0c>;
+ 				status = "disabled";
+--- a/arch/arm/boot/dts/overlays/imx258-overlay.dts
++++ b/arch/arm/boot/dts/overlays/imx258-overlay.dts
+@@ -74,7 +74,7 @@
+ 				};
+ 			};
+ 
+-			vcm: ad5398@0c {
++			vcm: ad5398@c {
+ 				compatible = "adi,ad5398";
+ 				reg = <0x0c>;
+ 				status = "disabled";
+--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
++++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+@@ -39,7 +39,7 @@
+ 				};
+ 			};
+ 
+-			vcm: ad5398@0c {
++			vcm: ad5398@c {
+ 				compatible = "adi,ad5398";
+ 				reg = <0x0c>;
+ 				status = "disabled";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0896-clk-Add-locking-to-clk_get_rate_range.patch b/target/linux/bcm27xx/patches-5.15/950-0896-clk-Add-locking-to-clk_get_rate_range.patch
new file mode 100644
index 0000000000..7e228999e2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0896-clk-Add-locking-to-clk_get_rate_range.patch
@@ -0,0 +1,25 @@
+From 68587d886984bbae2e7ea6f419d5feabcd24a53e Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 6 May 2022 12:24:31 +0200
+Subject: [PATCH] clk: Add locking to clk_get_rate_range
+
+clk_get_rate_range() is missing the proper locks, making lockdep
+complain.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/clk/clk.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -2589,7 +2589,9 @@ void clk_get_rate_range(struct clk *clk,
+ 	if (!clk || !min || !max)
+ 		return;
+ 
++	clk_prepare_lock();
+ 	clk_core_get_boundaries(clk->core, min, max);
++	clk_prepare_unlock();
+ }
+ EXPORT_SYMBOL_GPL(clk_get_rate_range);
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0897-drm-vc4-plane-Prevent-async-update-if-we-don-t-have-.patch b/target/linux/bcm27xx/patches-5.15/950-0897-drm-vc4-plane-Prevent-async-update-if-we-don-t-have-.patch
new file mode 100644
index 0000000000..a6d539ecdf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0897-drm-vc4-plane-Prevent-async-update-if-we-don-t-have-.patch
@@ -0,0 +1,37 @@
+From d04c74e3f30be64b0e14d7ed2b6088f91ac6ea64 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Wed, 16 Mar 2022 16:44:45 +0100
+Subject: [PATCH] drm/vc4: plane: Prevent async update if we don't have
+ a dlist
+
+The vc4 planes are setup in hardware by creating a hardware descriptor
+in a dedicated RAM. As part of the process to setup a plane in KMS, we
+thus need to allocate some part of that dedicated RAM to store our
+descriptor there.
+
+The async update path will just reuse the descriptor already allocated
+for that plane and will modify it directly in RAM to match whatever has
+been asked for.
+
+In order to do that, it will compare the descriptor for the old plane
+state and the new plane state, will make sure they fit in the same size,
+and check that only the position or buffer address have changed.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -1429,6 +1429,10 @@ static int vc4_plane_atomic_async_check(
+ 
+ 	old_vc4_state = to_vc4_plane_state(plane->state);
+ 	new_vc4_state = to_vc4_plane_state(new_plane_state);
++
++	if (!new_vc4_state->hw_dlist)
++		return -EINVAL;
++
+ 	if (old_vc4_state->dlist_count != new_vc4_state->dlist_count ||
+ 	    old_vc4_state->pos0_offset != new_vc4_state->pos0_offset ||
+ 	    old_vc4_state->pos2_offset != new_vc4_state->pos2_offset ||
diff --git a/target/linux/bcm27xx/patches-5.15/950-0898-drm-vc4-Consolidate-Hardware-Revision-Check.patch b/target/linux/bcm27xx/patches-5.15/950-0898-drm-vc4-Consolidate-Hardware-Revision-Check.patch
new file mode 100644
index 0000000000..826332d3c8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0898-drm-vc4-Consolidate-Hardware-Revision-Check.patch
@@ -0,0 +1,352 @@
+From def27ddc4bcd560f7e7a53d7aecc4ba4f78921e1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 21 Apr 2022 14:27:11 +0200
+Subject: [PATCH] drm/vc4: Consolidate Hardware Revision Check
+
+A new generation of controller has been introduced with the
+BCM2711/RaspberryPi4. This generation needs a bunch of quirks, and over
+time we've piled on a number of checks in most parts of the drivers.
+
+All these checks are performed several times, and are not always
+consistent. Let's create a single, global, variable to hold it and use
+it everywhere.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c  | 10 +++++-----
+ drivers/gpu/drm/vc4/vc4_drv.c   |  4 ++++
+ drivers/gpu/drm/vc4/vc4_drv.h   |  6 +++---
+ drivers/gpu/drm/vc4/vc4_hvs.c   | 26 +++++++++++++-------------
+ drivers/gpu/drm/vc4/vc4_kms.c   | 12 +++++-------
+ drivers/gpu/drm/vc4/vc4_plane.c | 13 ++++++-------
+ 6 files changed, 36 insertions(+), 35 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -256,7 +256,7 @@ static u32 vc4_get_fifo_full_level(struc
+ 		 * Removing 1 from the FIFO full level however
+ 		 * seems to completely remove that issue.
+ 		 */
+-		if (!vc4->hvs->hvs5)
++		if (!vc4->is_vc5)
+ 			return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX - 1;
+ 
+ 		return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
+@@ -425,7 +425,7 @@ static void vc4_crtc_config_pv(struct dr
+ 	if (is_dsi)
+ 		CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);
+ 
+-	if (vc4->hvs->hvs5)
++	if (vc4->is_vc5)
+ 		CRTC_WRITE(PV_MUX_CFG,
+ 			   VC4_SET_FIELD(PV_MUX_CFG_RGB_PIXEL_MUX_MODE_NO_SWAP,
+ 					 PV_MUX_CFG_RGB_PIXEL_MUX_MODE));
+@@ -883,7 +883,7 @@ static int vc4_async_set_fence_cb(struct
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct dma_fence *fence;
+ 
+-	if (!vc4->hvs->hvs5) {
++	if (!vc4->is_vc5) {
+ 		struct vc4_bo *bo = to_vc4_bo(&cma_bo->base);
+ 
+ 		return vc4_queue_seqno_cb(dev, &flip_state->cb, bo->seqno,
+@@ -1225,13 +1225,13 @@ int vc4_crtc_init(struct drm_device *drm
+ 				  crtc_funcs, NULL);
+ 	drm_crtc_helper_add(crtc, crtc_helper_funcs);
+ 
+-	if (!vc4->hvs->hvs5) {
++	if (!vc4->is_vc5) {
+ 		drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));
+ 		drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);
+ 	}
+ 
+ 
+-	if (!vc4->hvs->hvs5) {
++	if (!vc4->is_vc5) {
+ 		/* We support CTM, but only for one CRTC at a time. It's therefore
+ 		 * implemented as private driver state in vc4_kms, not here.
+ 		 */
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -246,10 +246,13 @@ static int vc4_drm_bind(struct device *d
+ 	struct vc4_dev *vc4;
+ 	struct device_node *node;
+ 	struct drm_crtc *crtc;
++	bool is_vc5;
+ 	int ret = 0;
+ 
+ 	dev->coherent_dma_mask = DMA_BIT_MASK(32);
+ 
++	is_vc5 = of_device_is_compatible(dev->of_node, "brcm,bcm2711-vc5");
++
+ 	/* If VC4 V3D is missing, don't advertise render nodes. */
+ 	node = of_find_matching_node_and_match(NULL, vc4_v3d_dt_match, NULL);
+ 	if (!node || !of_device_is_available(node))
+@@ -269,6 +272,7 @@ static int vc4_drm_bind(struct device *d
+ 	vc4 = devm_drm_dev_alloc(dev, &vc4_drm_driver, struct vc4_dev, base);
+ 	if (IS_ERR(vc4))
+ 		return PTR_ERR(vc4);
++	vc4->is_vc5 = is_vc5;
+ 
+ 	drm = &vc4->base;
+ 	platform_set_drvdata(pdev, drm);
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -75,6 +75,8 @@ struct vc4_perfmon {
+ struct vc4_dev {
+ 	struct drm_device base;
+ 
++	bool is_vc5;
++
+ 	unsigned int irq;
+ 
+ 	bool firmware_kms;
+@@ -321,6 +323,7 @@ struct vc4_v3d {
+ };
+ 
+ struct vc4_hvs {
++	struct vc4_dev *vc4;
+ 	struct platform_device *pdev;
+ 	void __iomem *regs;
+ 	u32 __iomem *dlist;
+@@ -339,9 +342,6 @@ struct vc4_hvs {
+ 
+ 	struct debugfs_regset32 regset;
+ 
+-	/* HVS version 5 flag, therefore requires updated dlist structures */
+-	bool hvs5;
+-
+ 	/*
+ 	 * Even if HDMI0 on the RPi4 can output modes requiring a pixel
+ 	 * rate higher than 297MHz, it needs some adjustments in the
+--- a/drivers/gpu/drm/vc4/vc4_hvs.c
++++ b/drivers/gpu/drm/vc4/vc4_hvs.c
+@@ -413,10 +413,11 @@ u8 vc4_hvs_get_fifo_frame_count(struct v
+ 
+ int vc4_hvs_get_fifo_from_output(struct vc4_hvs *hvs, unsigned int output)
+ {
++	struct vc4_dev *vc4 = hvs->vc4;
+ 	u32 reg;
+ 	int ret;
+ 
+-	if (!hvs->hvs5)
++	if (!vc4->is_vc5)
+ 		return output;
+ 
+ 	switch (output) {
+@@ -466,6 +467,7 @@ int vc4_hvs_get_fifo_from_output(struct
+ static int vc4_hvs_init_channel(struct vc4_hvs *hvs, struct drm_crtc *crtc,
+ 				struct drm_display_mode *mode, bool oneshot)
+ {
++	struct vc4_dev *vc4 = hvs->vc4;
+ 	struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
+ 	struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state);
+ 	unsigned int chan = vc4_crtc_state->assigned_channel;
+@@ -484,7 +486,7 @@ static int vc4_hvs_init_channel(struct v
+ 	 */
+ 	dispctrl = SCALER_DISPCTRLX_ENABLE;
+ 
+-	if (!hvs->hvs5)
++	if (!vc4->is_vc5)
+ 		dispctrl |= VC4_SET_FIELD(mode->hdisplay,
+ 					  SCALER_DISPCTRLX_WIDTH) |
+ 			    VC4_SET_FIELD(mode->vdisplay,
+@@ -514,7 +516,7 @@ static int vc4_hvs_init_channel(struct v
+ 	/* Reload the LUT, since the SRAMs would have been disabled if
+ 	 * all CRTCs had SCALER_DISPBKGND_GAMMA unset at once.
+ 	 */
+-	if (!hvs->hvs5)
++	if (!vc4->is_vc5)
+ 		vc4_hvs_lut_load(hvs, vc4_crtc);
+ 	else
+ 		vc5_hvs_lut_load(hvs, vc4_crtc);
+@@ -553,7 +555,7 @@ static int vc4_hvs_gamma_check(struct dr
+ 	struct drm_device *dev = crtc->dev;
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 
+-	if (!vc4->hvs->hvs5)
++	if (!vc4->is_vc5)
+ 		return 0;
+ 
+ 	if (!crtc_state->color_mgmt_changed)
+@@ -780,7 +782,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 		u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(channel));
+ 
+ 		if (crtc->state->gamma_lut) {
+-			if (!vc4->hvs->hvs5) {
++			if (!vc4->is_vc5) {
+ 				vc4_hvs_update_gamma_lut(hvs, vc4_crtc);
+ 				dispbkgndx |= SCALER_DISPBKGND_GAMMA;
+ 			} else {
+@@ -797,7 +799,7 @@ void vc4_hvs_atomic_flush(struct drm_crt
+ 			 * should already be disabling/enabling the pipeline
+ 			 * when gamma changes.
+ 			 */
+-			if (!vc4->hvs->hvs5)
++			if (!vc4->is_vc5)
+ 				dispbkgndx &= ~SCALER_DISPBKGND_GAMMA;
+ 		}
+ 		HVS_WRITE(SCALER_DISPBKGNDX(channel), dispbkgndx);
+@@ -883,11 +885,9 @@ static int vc4_hvs_bind(struct device *d
+ 	if (!hvs)
+ 		return -ENOMEM;
+ 
++	hvs->vc4 = vc4;
+ 	hvs->pdev = pdev;
+ 
+-	if (of_device_is_compatible(pdev->dev.of_node, "brcm,bcm2711-hvs"))
+-		hvs->hvs5 = true;
+-
+ 	hvs->regs = vc4_ioremap_regs(pdev, 0);
+ 	if (IS_ERR(hvs->regs))
+ 		return PTR_ERR(hvs->regs);
+@@ -896,7 +896,7 @@ static int vc4_hvs_bind(struct device *d
+ 	hvs->regset.regs = hvs_regs;
+ 	hvs->regset.nregs = ARRAY_SIZE(hvs_regs);
+ 
+-	if (hvs->hvs5) {
++	if (vc4->is_vc5) {
+ 		unsigned long max_rate;
+ 
+ 		hvs->core_clk = devm_clk_get(&pdev->dev, NULL);
+@@ -916,7 +916,7 @@ static int vc4_hvs_bind(struct device *d
+ 		}
+ 	}
+ 
+-	if (!hvs->hvs5)
++	if (!vc4->is_vc5)
+ 		hvs->dlist = hvs->regs + SCALER_DLIST_START;
+ 	else
+ 		hvs->dlist = hvs->regs + SCALER5_DLIST_START;
+@@ -937,7 +937,7 @@ static int vc4_hvs_bind(struct device *d
+ 	 * between planes when they don't overlap on the screen, but
+ 	 * for now we just allocate globally.
+ 	 */
+-	if (!hvs->hvs5)
++	if (!vc4->is_vc5)
+ 		/* 48k words of 2x12-bit pixels */
+ 		drm_mm_init(&hvs->lbm_mm, 0, 48 * 1024);
+ 	else
+@@ -1008,7 +1008,7 @@ static int vc4_hvs_bind(struct device *d
+ 			     NULL);
+ 	vc4_debugfs_add_file(drm, "hvs_dlists", vc4_hvs_debugfs_dlist,
+ 			     NULL);
+-	if (hvs->hvs5)
++	if (vc4->is_vc5)
+ 		vc4_debugfs_add_file(drm, "hvs_gamma", vc5_hvs_debugfs_gamma,
+ 				     NULL);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -395,7 +395,7 @@ static void vc4_atomic_commit_tail(struc
+ 		old_hvs_state->fifo_state[channel].pending_commit = NULL;
+ 	}
+ 
+-	if (vc4->hvs && vc4->hvs->hvs5) {
++	if (vc4->is_vc5 && !vc4->firmware_kms) {
+ 		unsigned long state_rate = max(old_hvs_state->core_clock_rate,
+ 					       new_hvs_state->core_clock_rate);
+ 		unsigned long core_rate = clamp_t(unsigned long, state_rate,
+@@ -409,7 +409,7 @@ static void vc4_atomic_commit_tail(struc
+ 	vc4_ctm_commit(vc4, state);
+ 
+ 	if (!vc4->firmware_kms) {
+-		if (vc4->hvs && vc4->hvs->hvs5)
++		if (vc4->is_vc5)
+ 			vc5_hvs_pv_muxing_commit(vc4, state);
+ 		else
+ 			vc4_hvs_pv_muxing_commit(vc4, state);
+@@ -427,7 +427,7 @@ static void vc4_atomic_commit_tail(struc
+ 
+ 	drm_atomic_helper_cleanup_planes(dev, state);
+ 
+-	if (vc4->hvs && vc4->hvs->hvs5) {
++	if (vc4->is_vc5 && !vc4->firmware_kms) {
+ 		unsigned long core_rate = min_t(unsigned long,
+ 					       max_clock_rate,
+ 					       new_hvs_state->core_clock_rate);
+@@ -995,8 +995,6 @@ static const struct drm_mode_config_func
+ int vc4_kms_load(struct drm_device *dev)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+-	bool is_vc5 = of_device_is_compatible(dev->dev->of_node,
+-					      "brcm,bcm2711-vc5");
+ 	int ret;
+ 
+ 	/*
+@@ -1004,7 +1002,7 @@ int vc4_kms_load(struct drm_device *dev)
+ 	 * the BCM2711, but the load tracker computations are used for
+ 	 * the core clock rate calculation.
+ 	 */
+-	if (!is_vc5) {
++	if (!vc4->is_vc5) {
+ 		/* Start with the load tracker enabled. Can be
+ 		 * disabled through the debugfs load_tracker file.
+ 		 */
+@@ -1020,7 +1018,7 @@ int vc4_kms_load(struct drm_device *dev)
+ 		return ret;
+ 	}
+ 
+-	if (is_vc5) {
++	if (vc4->is_vc5) {
+ 		dev->mode_config.max_width = 7680;
+ 		dev->mode_config.max_height = 7680;
+ 	} else {
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -542,10 +542,10 @@ static u32 vc4_lbm_size(struct drm_plane
+ 	}
+ 
+ 	/* Align it to 64 or 128 (hvs5) bytes */
+-	lbm = roundup(lbm, vc4->hvs->hvs5 ? 128 : 64);
++	lbm = roundup(lbm, vc4->is_vc5 ? 128 : 64);
+ 
+ 	/* Each "word" of the LBM memory contains 2 or 4 (hvs5) pixels */
+-	lbm /= vc4->hvs->hvs5 ? 4 : 2;
++	lbm /= vc4->is_vc5 ? 4 : 2;
+ 
+ 	return lbm;
+ }
+@@ -664,7 +664,7 @@ static int vc4_plane_allocate_lbm(struct
+ 		ret = drm_mm_insert_node_generic(&vc4->hvs->lbm_mm,
+ 						 &vc4_state->lbm,
+ 						 lbm_size,
+-						 vc4->hvs->hvs5 ? 64 : 32,
++						 vc4->is_vc5 ? 64 : 32,
+ 						 0, 0);
+ 		spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags);
+ 
+@@ -1039,7 +1039,7 @@ static int vc4_plane_mode_set(struct drm
+ 	mix_plane_alpha = state->alpha != DRM_BLEND_ALPHA_OPAQUE &&
+ 			  fb->format->has_alpha;
+ 
+-	if (!vc4->hvs->hvs5) {
++	if (!vc4->is_vc5) {
+ 	/* Control word */
+ 		vc4_dlist_write(vc4_state,
+ 				SCALER_CTL0_VALID |
+@@ -1570,14 +1570,13 @@ static const struct drm_plane_funcs vc4_
+ struct drm_plane *vc4_plane_init(struct drm_device *dev,
+ 				 enum drm_plane_type type)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_plane *plane = NULL;
+ 	struct vc4_plane *vc4_plane;
+ 	u32 formats[ARRAY_SIZE(hvs_formats)];
+ 	int num_formats = 0;
+ 	int ret = 0;
+ 	unsigned i;
+-	bool hvs5 = of_device_is_compatible(dev->dev->of_node,
+-					    "brcm,bcm2711-vc5");
+ 	static const uint64_t modifiers[] = {
+ 		DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED,
+ 		DRM_FORMAT_MOD_BROADCOM_SAND128,
+@@ -1593,7 +1592,7 @@ struct drm_plane *vc4_plane_init(struct
+ 		return ERR_PTR(-ENOMEM);
+ 
+ 	for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) {
+-		if (!hvs_formats[i].hvs5_only || hvs5) {
++		if (!hvs_formats[i].hvs5_only || vc4->is_vc5) {
+ 			formats[num_formats] = hvs_formats[i].drm;
+ 			num_formats++;
+ 		}
diff --git a/target/linux/bcm27xx/patches-5.15/950-0899-drm-vc4-bo-Rename-vc4_dumb_create.patch b/target/linux/bcm27xx/patches-5.15/950-0899-drm-vc4-bo-Rename-vc4_dumb_create.patch
new file mode 100644
index 0000000000..1f5a919968
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0899-drm-vc4-bo-Rename-vc4_dumb_create.patch
@@ -0,0 +1,56 @@
+From a2cfbcef760e546c930c37fa36e3415bbc0cad31 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Fri, 18 Mar 2022 09:46:35 +0100
+Subject: [PATCH] drm/vc4: bo: Rename vc4_dumb_create
+
+We're going to add a new variant of the dumb BO allocation function, so
+let's rename vc4_dumb_create() to something a bit more specific.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_bo.c  | 6 +++---
+ drivers/gpu/drm/vc4/vc4_drv.c | 2 +-
+ drivers/gpu/drm/vc4/vc4_drv.h | 6 +++---
+ 3 files changed, 7 insertions(+), 7 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_bo.c
++++ b/drivers/gpu/drm/vc4/vc4_bo.c
+@@ -473,9 +473,9 @@ struct vc4_bo *vc4_bo_create(struct drm_
+ 	return bo;
+ }
+ 
+-int vc4_dumb_create(struct drm_file *file_priv,
+-		    struct drm_device *dev,
+-		    struct drm_mode_create_dumb *args)
++int vc4_bo_dumb_create(struct drm_file *file_priv,
++		       struct drm_device *dev,
++		       struct drm_mode_create_dumb *args)
+ {
+ 	int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+ 	struct vc4_bo *bo = NULL;
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -177,7 +177,7 @@ static struct drm_driver vc4_drm_driver
+ 
+ 	.gem_create_object = vc4_create_object,
+ 
+-	DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(vc4_dumb_create),
++	DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(vc4_bo_dumb_create),
+ 
+ 	.ioctls = vc4_drm_ioctls,
+ 	.num_ioctls = ARRAY_SIZE(vc4_drm_ioctls),
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -846,9 +846,9 @@ struct vc4_validated_shader_info {
+ struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size);
+ struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t size,
+ 			     bool from_cache, enum vc4_kernel_bo_type type);
+-int vc4_dumb_create(struct drm_file *file_priv,
+-		    struct drm_device *dev,
+-		    struct drm_mode_create_dumb *args);
++int vc4_bo_dumb_create(struct drm_file *file_priv,
++		       struct drm_device *dev,
++		       struct drm_mode_create_dumb *args);
+ int vc4_create_bo_ioctl(struct drm_device *dev, void *data,
+ 			struct drm_file *file_priv);
+ int vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0900-drm-vc4-bo-Split-out-Dumb-buffers-fixup.patch b/target/linux/bcm27xx/patches-5.15/950-0900-drm-vc4-bo-Split-out-Dumb-buffers-fixup.patch
new file mode 100644
index 0000000000..8b066bf2f2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0900-drm-vc4-bo-Split-out-Dumb-buffers-fixup.patch
@@ -0,0 +1,72 @@
+From 5e59f19a966fa351cf9b5e59e2dbf2162a8542ce Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 21 Apr 2022 10:59:41 +0200
+Subject: [PATCH] drm/vc4: bo: Split out Dumb buffers fixup
+
+The vc4_bo_dumb_create() both fixes up the allocation arguments to match
+the hardware constraints and actually performs the allocation.
+
+Since we're going to introduce a new function that uses a different
+allocator, let's split the arguments fixup to a separate function we
+will be able to reuse.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_bo.c  |  9 +++------
+ drivers/gpu/drm/vc4/vc4_drv.c | 13 +++++++++++++
+ drivers/gpu/drm/vc4/vc4_drv.h |  1 +
+ 3 files changed, 17 insertions(+), 6 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_bo.c
++++ b/drivers/gpu/drm/vc4/vc4_bo.c
+@@ -477,15 +477,12 @@ int vc4_bo_dumb_create(struct drm_file *
+ 		       struct drm_device *dev,
+ 		       struct drm_mode_create_dumb *args)
+ {
+-	int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+ 	struct vc4_bo *bo = NULL;
+ 	int ret;
+ 
+-	if (args->pitch < min_pitch)
+-		args->pitch = min_pitch;
+-
+-	if (args->size < args->pitch * args->height)
+-		args->size = args->pitch * args->height;
++	ret = vc4_dumb_fixup_args(args);
++	if (ret)
++		return ret;
+ 
+ 	bo = vc4_bo_create(dev, args->size, false, VC4_BO_TYPE_DUMB);
+ 	if (IS_ERR(bo))
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -65,6 +65,19 @@ void __iomem *vc4_ioremap_regs(struct pl
+ 	return map;
+ }
+ 
++int vc4_dumb_fixup_args(struct drm_mode_create_dumb *args)
++{
++	int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
++
++	if (args->pitch < min_pitch)
++		args->pitch = min_pitch;
++
++	if (args->size < args->pitch * args->height)
++		args->size = args->pitch * args->height;
++
++	return 0;
++}
++
+ static int vc4_get_param_ioctl(struct drm_device *dev, void *data,
+ 			       struct drm_file *file_priv)
+ {
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -917,6 +917,7 @@ static inline void vc4_debugfs_add_regse
+ 
+ /* vc4_drv.c */
+ void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index);
++int vc4_dumb_fixup_args(struct drm_mode_create_dumb *args);
+ 
+ /* vc4_dpi.c */
+ extern struct platform_driver vc4_dpi_driver;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0901-drm-vc4-drv-Register-a-different-driver-on-BCM2711.patch b/target/linux/bcm27xx/patches-5.15/950-0901-drm-vc4-drv-Register-a-different-driver-on-BCM2711.patch
new file mode 100644
index 0000000000..515a3b59a4
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0901-drm-vc4-drv-Register-a-different-driver-on-BCM2711.patch
@@ -0,0 +1,128 @@
+From bf001e8bacbf627525ec90027bfea19b788d6d8e Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 21 Apr 2022 11:08:22 +0200
+Subject: [PATCH] drm/vc4: drv: Register a different driver on BCM2711
+
+Prior to the BCM2711/RaspberryPi4, the GPU was a part of the display
+components of the SoC. It was thus a part of the vc4 driver.
+
+However, with the BCM2711, it got split out and thus the v3d driver was
+created. The vc4 driver now only handles the display part.
+
+We didn't properly split out the code when doing the BCM2711 support
+though, and most of the code around buffer allocations is still
+involved, even though it doesn't have the backing hardware anymore.
+
+Let's start the split out by creating a new drm_driver that only reports
+and uses what we support on the BCM2711. The ioctl were properly
+filtered already, but we were still exposing a .gem_create_object hook,
+as well as having an .open and .postclose hooks which are only relevant
+on older generations.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 51 ++++++++++++++++++++++++++++-------
+ 1 file changed, 42 insertions(+), 9 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -78,6 +78,19 @@ int vc4_dumb_fixup_args(struct drm_mode_
+ 	return 0;
+ }
+ 
++static int vc4_dumb_create(struct drm_file *file_priv,
++			   struct drm_device *dev,
++			   struct drm_mode_create_dumb *args)
++{
++	int ret;
++
++	ret = vc4_dumb_fixup_args(args);
++	if (ret)
++		return ret;
++
++	return drm_gem_cma_dumb_create_internal(file_priv, dev, args);
++}
++
+ static int vc4_get_param_ioctl(struct drm_device *dev, void *data,
+ 			       struct drm_file *file_priv)
+ {
+@@ -175,7 +188,7 @@ static const struct drm_ioctl_desc vc4_d
+ 	DRM_IOCTL_DEF_DRV(VC4_PERFMON_GET_VALUES, vc4_perfmon_get_values_ioctl, DRM_RENDER_ALLOW),
+ };
+ 
+-static struct drm_driver vc4_drm_driver = {
++static const struct drm_driver vc4_drm_driver = {
+ 	.driver_features = (DRIVER_MODESET |
+ 			    DRIVER_ATOMIC |
+ 			    DRIVER_GEM |
+@@ -204,6 +217,27 @@ static struct drm_driver vc4_drm_driver
+ 	.patchlevel = DRIVER_PATCHLEVEL,
+ };
+ 
++static const struct drm_driver vc5_drm_driver = {
++	.driver_features = (DRIVER_MODESET |
++			    DRIVER_ATOMIC |
++			    DRIVER_GEM),
++
++#if defined(CONFIG_DEBUG_FS)
++	.debugfs_init = vc4_debugfs_init,
++#endif
++
++	DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(vc4_dumb_create),
++
++	.fops = &vc4_drm_fops,
++
++	.name = DRIVER_NAME,
++	.desc = DRIVER_DESC,
++	.date = DRIVER_DATE,
++	.major = DRIVER_MAJOR,
++	.minor = DRIVER_MINOR,
++	.patchlevel = DRIVER_PATCHLEVEL,
++};
++
+ static int compare_dev(struct device *dev, void *data)
+ {
+ 	return dev == data;
+@@ -254,6 +288,7 @@ static bool firmware_kms(void)
+ static int vc4_drm_bind(struct device *dev)
+ {
+ 	struct platform_device *pdev = to_platform_device(dev);
++	const struct drm_driver *driver;
+ 	struct rpi_firmware *firmware = NULL;
+ 	struct drm_device *drm;
+ 	struct vc4_dev *vc4;
+@@ -265,12 +300,10 @@ static int vc4_drm_bind(struct device *d
+ 	dev->coherent_dma_mask = DMA_BIT_MASK(32);
+ 
+ 	is_vc5 = of_device_is_compatible(dev->of_node, "brcm,bcm2711-vc5");
+-
+-	/* If VC4 V3D is missing, don't advertise render nodes. */
+-	node = of_find_matching_node_and_match(NULL, vc4_v3d_dt_match, NULL);
+-	if (!node || !of_device_is_available(node))
+-		vc4_drm_driver.driver_features &= ~DRIVER_RENDER;
+-	of_node_put(node);
++	if (is_vc5)
++		driver = &vc5_drm_driver;
++	else
++		driver = &vc4_drm_driver;
+ 
+ 	node = of_find_matching_node_and_match(NULL, vc4_dma_range_matches,
+ 					       NULL);
+@@ -282,7 +315,7 @@ static int vc4_drm_bind(struct device *d
+ 			return ret;
+ 	}
+ 
+-	vc4 = devm_drm_dev_alloc(dev, &vc4_drm_driver, struct vc4_dev, base);
++	vc4 = devm_drm_dev_alloc(dev, driver, struct vc4_dev, base);
+ 	if (IS_ERR(vc4))
+ 		return PTR_ERR(vc4);
+ 	vc4->is_vc5 = is_vc5;
+@@ -314,7 +347,7 @@ static int vc4_drm_bind(struct device *d
+ 			return -EPROBE_DEFER;
+ 	}
+ 
+-	ret = drm_aperture_remove_framebuffers(false, &vc4_drm_driver);
++	ret = drm_aperture_remove_framebuffers(false, driver);
+ 	if (ret)
+ 		return ret;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0902-drm-vc4-kms-Register-a-different-drm_mode_config_fun.patch b/target/linux/bcm27xx/patches-5.15/950-0902-drm-vc4-kms-Register-a-different-drm_mode_config_fun.patch
new file mode 100644
index 0000000000..37c091123c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0902-drm-vc4-kms-Register-a-different-drm_mode_config_fun.patch
@@ -0,0 +1,44 @@
+From 407b0fcd8becc2c948bbe3337db0cf2a45f19949 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 21 Apr 2022 11:13:00 +0200
+Subject: [PATCH] drm/vc4: kms: Register a different
+ drm_mode_config_funcs on BCM2711
+
+On the BCM2711, our current definition of drm_mode_config_funcs uses the
+custom vc4_fb_create().
+
+However, that function relies on the buffer allocation path that was
+relying on the GPU, and is no longer relevant.
+
+Let's create another drm_mode_config_funcs structure that we will
+register on the BCM2711.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_kms.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -992,6 +992,12 @@ static const struct drm_mode_config_func
+ 	.fb_create = vc4_fb_create,
+ };
+ 
++static const struct drm_mode_config_funcs vc5_mode_funcs = {
++	.atomic_check = vc4_atomic_check,
++	.atomic_commit = drm_atomic_helper_commit,
++	.fb_create = drm_gem_fb_create,
++};
++
+ int vc4_kms_load(struct drm_device *dev)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+@@ -1026,7 +1032,7 @@ int vc4_kms_load(struct drm_device *dev)
+ 		dev->mode_config.max_height = 2048;
+ 	}
+ 
+-	dev->mode_config.funcs = &vc4_mode_funcs;
++	dev->mode_config.funcs = vc4->is_vc5 ? &vc5_mode_funcs : &vc4_mode_funcs;
+ 	dev->mode_config.helper_private = &vc4_mode_config_helpers;
+ 	dev->mode_config.preferred_depth = 24;
+ 	dev->mode_config.async_page_flip = true;
diff --git a/target/linux/bcm27xx/patches-5.15/950-0903-drm-vc4-plane-Register-a-different-drm_plane_helper_.patch b/target/linux/bcm27xx/patches-5.15/950-0903-drm-vc4-plane-Register-a-different-drm_plane_helper_.patch
new file mode 100644
index 0000000000..c861170b42
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0903-drm-vc4-plane-Register-a-different-drm_plane_helper_.patch
@@ -0,0 +1,48 @@
+From 597258e5effb6ab56a116823e8cb88ccc578ec06 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 21 Apr 2022 11:39:27 +0200
+Subject: [PATCH] drm/vc4: plane: Register a different
+ drm_plane_helper_funcs on BCM2711
+
+On the BCM2711, our current definition of drm_plane_helper_funcs uses
+the custom vc4_prepare_fb() and vc4_cleanup_fb().
+
+Those functions rely on the buffer allocation path that was relying on
+the GPU, and is no longer relevant.
+
+Let's create another drm_plane_helper_funcs structure that we will
+register on the BCM2711.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -1502,6 +1502,13 @@ static const struct drm_plane_helper_fun
+ 	.atomic_async_update = vc4_plane_atomic_async_update,
+ };
+ 
++static const struct drm_plane_helper_funcs vc5_plane_helper_funcs = {
++	.atomic_check = vc4_plane_atomic_check,
++	.atomic_update = vc4_plane_atomic_update,
++	.atomic_async_check = vc4_plane_atomic_async_check,
++	.atomic_async_update = vc4_plane_atomic_async_update,
++};
++
+ static bool vc4_format_mod_supported(struct drm_plane *plane,
+ 				     uint32_t format,
+ 				     uint64_t modifier)
+@@ -1606,7 +1613,10 @@ struct drm_plane *vc4_plane_init(struct
+ 	if (ret)
+ 		return ERR_PTR(ret);
+ 
+-	drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
++	if (vc4->is_vc5)
++		drm_plane_helper_add(plane, &vc5_plane_helper_funcs);
++	else
++		drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
+ 
+ 	drm_plane_create_alpha_property(plane);
+ 	drm_plane_create_blend_mode_property(plane,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0904-drm-vc4-drv-Skip-BO-Backend-Initialization-on-BCM271.patch b/target/linux/bcm27xx/patches-5.15/950-0904-drm-vc4-drv-Skip-BO-Backend-Initialization-on-BCM271.patch
new file mode 100644
index 0000000000..cb4a077f61
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0904-drm-vc4-drv-Skip-BO-Backend-Initialization-on-BCM271.patch
@@ -0,0 +1,52 @@
+From 37f9fb928b7f32f4ee16cbd494aa15f146b20a65 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 21 Apr 2022 17:29:02 +0200
+Subject: [PATCH] drm/vc4: drv: Skip BO Backend Initialization on
+ BCM2711
+
+On the BCM2711, we currently call the vc4_bo_cache_init() and
+vc4_gem_init() functions. These functions initialize the BO and GEM
+backends.
+
+However, this code was initially created to accomodate the requirements
+of the GPU on the older SoCs, while the BCM2711 has a separate driver
+for it. So let's just skip these calls when we're on a newer hardware.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_drv.c | 18 +++++++++++-------
+ 1 file changed, 11 insertions(+), 7 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -324,19 +324,23 @@ static int vc4_drm_bind(struct device *d
+ 	platform_set_drvdata(pdev, drm);
+ 	INIT_LIST_HEAD(&vc4->debugfs_list);
+ 
+-	mutex_init(&vc4->bin_bo_lock);
++	if (!is_vc5) {
++		mutex_init(&vc4->bin_bo_lock);
+ 
+-	ret = vc4_bo_cache_init(drm);
+-	if (ret)
+-		return ret;
++		ret = vc4_bo_cache_init(drm);
++		if (ret)
++			return ret;
++	}
+ 
+ 	ret = drmm_mode_config_init(drm);
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = vc4_gem_init(drm);
+-	if (ret)
+-		return ret;
++	if (!is_vc5) {
++		ret = vc4_gem_init(drm);
++		if (ret)
++			return ret;
++	}
+ 
+ 	node = of_find_compatible_node(NULL, NULL, "raspberrypi,bcm2835-firmware");
+ 	if (node) {
diff --git a/target/linux/bcm27xx/patches-5.15/950-0905-drm-vc4-crtc-Use-an-union-to-store-the-page-flip-cal.patch b/target/linux/bcm27xx/patches-5.15/950-0905-drm-vc4-crtc-Use-an-union-to-store-the-page-flip-cal.patch
new file mode 100644
index 0000000000..ef92e7b2aa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0905-drm-vc4-crtc-Use-an-union-to-store-the-page-flip-cal.patch
@@ -0,0 +1,84 @@
+From 92f7f613ece28ecff26cbe5b5af20343bb624db1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 2 May 2022 10:20:56 +0200
+Subject: [PATCH] drm/vc4: crtc: Use an union to store the page flip
+ callback
+
+We'll need to extend the vc4_async_flip_state structure to rely on
+another callback implementation, so let's move the current one into a
+union.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 30 +++++++++++++++++++-----------
+ 1 file changed, 19 insertions(+), 11 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -818,18 +818,18 @@ struct vc4_async_flip_state {
+ 	struct drm_framebuffer *old_fb;
+ 	struct drm_pending_vblank_event *event;
+ 
+-	struct vc4_seqno_cb cb;
+-	struct dma_fence_cb fence_cb;
++	union {
++		struct dma_fence_cb fence;
++		struct vc4_seqno_cb seqno;
++	} cb;
+ };
+ 
+ /* Called when the V3D execution for the BO being flipped to is done, so that
+  * we can actually update the plane's address to point to it.
+  */
+ static void
+-vc4_async_page_flip_complete(struct vc4_seqno_cb *cb)
++vc4_async_page_flip_complete(struct vc4_async_flip_state *flip_state)
+ {
+-	struct vc4_async_flip_state *flip_state =
+-		container_of(cb, struct vc4_async_flip_state, cb);
+ 	struct drm_crtc *crtc = flip_state->crtc;
+ 	struct drm_device *dev = crtc->dev;
+ 	struct drm_plane *plane = crtc->primary;
+@@ -865,13 +865,21 @@ vc4_async_page_flip_complete(struct vc4_
+ 	kfree(flip_state);
+ }
+ 
++static void vc4_async_page_flip_seqno_complete(struct vc4_seqno_cb *cb)
++{
++	struct vc4_async_flip_state *flip_state =
++		container_of(cb, struct vc4_async_flip_state, cb.seqno);
++
++	vc4_async_page_flip_complete(flip_state);
++}
++
+ static void vc4_async_page_flip_fence_complete(struct dma_fence *fence,
+ 					       struct dma_fence_cb *cb)
+ {
+ 	struct vc4_async_flip_state *flip_state =
+-		container_of(cb, struct vc4_async_flip_state, fence_cb);
++		container_of(cb, struct vc4_async_flip_state, cb.fence);
+ 
+-	vc4_async_page_flip_complete(&flip_state->cb);
++	vc4_async_page_flip_complete(flip_state);
+ 	dma_fence_put(fence);
+ }
+ 
+@@ -886,14 +894,14 @@ static int vc4_async_set_fence_cb(struct
+ 	if (!vc4->is_vc5) {
+ 		struct vc4_bo *bo = to_vc4_bo(&cma_bo->base);
+ 
+-		return vc4_queue_seqno_cb(dev, &flip_state->cb, bo->seqno,
+-					  vc4_async_page_flip_complete);
++		return vc4_queue_seqno_cb(dev, &flip_state->cb.seqno, bo->seqno,
++					  vc4_async_page_flip_seqno_complete);
+ 	}
+ 
+ 	fence = dma_fence_get(dma_resv_excl_fence(cma_bo->base.resv));
+-	if (dma_fence_add_callback(fence, &flip_state->fence_cb,
++	if (dma_fence_add_callback(fence, &flip_state->cb.fence,
+ 				   vc4_async_page_flip_fence_complete))
+-		vc4_async_page_flip_fence_complete(fence, &flip_state->fence_cb);
++		vc4_async_page_flip_fence_complete(fence, &flip_state->cb.fence);
+ 
+ 	return 0;
+ }
diff --git a/target/linux/bcm27xx/patches-5.15/950-0906-drm-vc4-crtc-Move-the-BO-handling-out-of-common-page.patch b/target/linux/bcm27xx/patches-5.15/950-0906-drm-vc4-crtc-Move-the-BO-handling-out-of-common-page.patch
new file mode 100644
index 0000000000..958f4e8d38
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0906-drm-vc4-crtc-Move-the-BO-handling-out-of-common-page.patch
@@ -0,0 +1,68 @@
+From e2b51ac3278847aa79089b4a1b94b8d762af0052 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 2 May 2022 15:25:20 +0200
+Subject: [PATCH] drm/vc4: crtc: Move the BO handling out of common
+ page-flip callback
+
+We'll soon introduce another completion callback source that won't need
+to use the BO reference counting, so let's move it around to create a
+function we will be able to share between both callbacks.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 34 ++++++++++++++++++++--------------
+ 1 file changed, 20 insertions(+), 14 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -846,21 +846,8 @@ vc4_async_page_flip_complete(struct vc4_
+ 	drm_crtc_vblank_put(crtc);
+ 	drm_framebuffer_put(flip_state->fb);
+ 
+-	/* Decrement the BO usecnt in order to keep the inc/dec calls balanced
+-	 * when the planes are updated through the async update path.
+-	 * FIXME: we should move to generic async-page-flip when it's
+-	 * available, so that we can get rid of this hand-made cleanup_fb()
+-	 * logic.
+-	 */
+-	if (flip_state->old_fb) {
+-		struct drm_gem_cma_object *cma_bo;
+-		struct vc4_bo *bo;
+-
+-		cma_bo = drm_fb_cma_get_gem_obj(flip_state->old_fb, 0);
+-		bo = to_vc4_bo(&cma_bo->base);
+-		vc4_bo_dec_usecnt(bo);
++	if (flip_state->old_fb)
+ 		drm_framebuffer_put(flip_state->old_fb);
+-	}
+ 
+ 	kfree(flip_state);
+ }
+@@ -869,8 +856,27 @@ static void vc4_async_page_flip_seqno_co
+ {
+ 	struct vc4_async_flip_state *flip_state =
+ 		container_of(cb, struct vc4_async_flip_state, cb.seqno);
++	struct vc4_bo *bo = NULL;
++
++	if (flip_state->old_fb) {
++		struct drm_gem_cma_object *cma_bo =
++			drm_fb_cma_get_gem_obj(flip_state->old_fb, 0);
++		bo = to_vc4_bo(&cma_bo->base);
++	}
+ 
+ 	vc4_async_page_flip_complete(flip_state);
++
++	/*
++	 * Decrement the BO usecnt in order to keep the inc/dec
++	 * calls balanced when the planes are updated through
++	 * the async update path.
++	 *
++	 * FIXME: we should move to generic async-page-flip when
++	 * it's available, so that we can get rid of this
++	 * hand-made cleanup_fb() logic.
++	 */
++	if (bo)
++		vc4_bo_dec_usecnt(bo);
+ }
+ 
+ static void vc4_async_page_flip_fence_complete(struct dma_fence *fence,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0907-drm-vc4-crtc-Move-the-BO-Handling-out-of-Common-Page.patch b/target/linux/bcm27xx/patches-5.15/950-0907-drm-vc4-crtc-Move-the-BO-Handling-out-of-Common-Page.patch
new file mode 100644
index 0000000000..d3b680a56c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0907-drm-vc4-crtc-Move-the-BO-Handling-out-of-Common-Page.patch
@@ -0,0 +1,118 @@
+From 99c7b8eabae7a6a6e6c5f53f3a9d0996b24e10b3 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 2 May 2022 15:27:36 +0200
+Subject: [PATCH] drm/vc4: crtc: Move the BO Handling out of Common
+ Page-Flip Handler
+
+The function vc4_async_page_flip() handles asynchronous page-flips in
+the vc4 driver.
+
+However, it mixes some generic code with code that should only be run on
+older generations that have the GPU handled by the vc4 driver.
+
+Let's split the generic part out of vc4_async_page_flip() and into a
+common function that we be reusable by an handler made for the BCM2711.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 75 ++++++++++++++++++++++------------
+ 1 file changed, 48 insertions(+), 27 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -912,40 +912,19 @@ static int vc4_async_set_fence_cb(struct
+ 	return 0;
+ }
+ 
+-/* Implements async (non-vblank-synced) page flips.
+- *
+- * The page flip ioctl needs to return immediately, so we grab the
+- * modeset semaphore on the pipe, and queue the address update for
+- * when V3D is done with the BO being flipped to.
+- */
+-static int vc4_async_page_flip(struct drm_crtc *crtc,
+-			       struct drm_framebuffer *fb,
+-			       struct drm_pending_vblank_event *event,
+-			       uint32_t flags)
++static int
++vc4_async_page_flip_common(struct drm_crtc *crtc,
++			   struct drm_framebuffer *fb,
++			   struct drm_pending_vblank_event *event,
++			   uint32_t flags)
+ {
+ 	struct drm_device *dev = crtc->dev;
+ 	struct drm_plane *plane = crtc->primary;
+-	int ret = 0;
+ 	struct vc4_async_flip_state *flip_state;
+-	struct drm_gem_cma_object *cma_bo = drm_fb_cma_get_gem_obj(fb, 0);
+-	struct vc4_bo *bo = to_vc4_bo(&cma_bo->base);
+-
+-	/* Increment the BO usecnt here, so that we never end up with an
+-	 * unbalanced number of vc4_bo_{dec,inc}_usecnt() calls when the
+-	 * plane is later updated through the non-async path.
+-	 * FIXME: we should move to generic async-page-flip when it's
+-	 * available, so that we can get rid of this hand-made prepare_fb()
+-	 * logic.
+-	 */
+-	ret = vc4_bo_inc_usecnt(bo);
+-	if (ret)
+-		return ret;
+ 
+ 	flip_state = kzalloc(sizeof(*flip_state), GFP_KERNEL);
+-	if (!flip_state) {
+-		vc4_bo_dec_usecnt(bo);
++	if (!flip_state)
+ 		return -ENOMEM;
+-	}
+ 
+ 	drm_framebuffer_get(fb);
+ 	flip_state->fb = fb;
+@@ -978,6 +957,48 @@ static int vc4_async_page_flip(struct dr
+ 	return 0;
+ }
+ 
++/* Implements async (non-vblank-synced) page flips.
++ *
++ * The page flip ioctl needs to return immediately, so we grab the
++ * modeset semaphore on the pipe, and queue the address update for
++ * when V3D is done with the BO being flipped to.
++ */
++static int vc4_async_page_flip(struct drm_crtc *crtc,
++			       struct drm_framebuffer *fb,
++			       struct drm_pending_vblank_event *event,
++			       uint32_t flags)
++{
++	struct drm_device *dev = crtc->dev;
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
++	struct drm_gem_cma_object *cma_bo = drm_fb_cma_get_gem_obj(fb, 0);
++	struct vc4_bo *bo = to_vc4_bo(&cma_bo->base);
++	int ret;
++
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
++	/*
++	 * Increment the BO usecnt here, so that we never end up with an
++	 * unbalanced number of vc4_bo_{dec,inc}_usecnt() calls when the
++	 * plane is later updated through the non-async path.
++	 *
++	 * FIXME: we should move to generic async-page-flip when
++	 * it's available, so that we can get rid of this
++	 * hand-made prepare_fb() logic.
++	 */
++	ret = vc4_bo_inc_usecnt(bo);
++	if (ret)
++		return ret;
++
++	ret = vc4_async_page_flip_common(crtc, fb, event, flags);
++	if (ret) {
++		vc4_bo_dec_usecnt(bo);
++		return ret;
++	}
++
++	return 0;
++}
++
+ int vc4_page_flip(struct drm_crtc *crtc,
+ 		  struct drm_framebuffer *fb,
+ 		  struct drm_pending_vblank_event *event,
diff --git a/target/linux/bcm27xx/patches-5.15/950-0908-drm-vc4-crtc-Don-t-call-into-BO-Handling-on-Async-Pa.patch b/target/linux/bcm27xx/patches-5.15/950-0908-drm-vc4-crtc-Don-t-call-into-BO-Handling-on-Async-Pa.patch
new file mode 100644
index 0000000000..96941cb20f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0908-drm-vc4-crtc-Don-t-call-into-BO-Handling-on-Async-Pa.patch
@@ -0,0 +1,52 @@
+From 7aa9189e401ddee705d851fe30b59d81cc71ebac Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Mon, 2 May 2022 15:28:05 +0200
+Subject: [PATCH] drm/vc4: crtc: Don't call into BO Handling on Async
+ Page-Flips on BCM2711
+
+The BCM2711 doesn't have a v3d GPU so we don't want to call into its BO
+management code. Let's create an asynchronous page-flip handler for the
+BCM2711 that just calls into the common code.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_crtc.c | 21 ++++++++++++++++++---
+ 1 file changed, 18 insertions(+), 3 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_crtc.c
++++ b/drivers/gpu/drm/vc4/vc4_crtc.c
+@@ -999,16 +999,31 @@ static int vc4_async_page_flip(struct dr
+ 	return 0;
+ }
+ 
++static int vc5_async_page_flip(struct drm_crtc *crtc,
++			       struct drm_framebuffer *fb,
++			       struct drm_pending_vblank_event *event,
++			       uint32_t flags)
++{
++	return vc4_async_page_flip_common(crtc, fb, event, flags);
++}
++
+ int vc4_page_flip(struct drm_crtc *crtc,
+ 		  struct drm_framebuffer *fb,
+ 		  struct drm_pending_vblank_event *event,
+ 		  uint32_t flags,
+ 		  struct drm_modeset_acquire_ctx *ctx)
+ {
+-	if (flags & DRM_MODE_PAGE_FLIP_ASYNC)
+-		return vc4_async_page_flip(crtc, fb, event, flags);
+-	else
++	if (flags & DRM_MODE_PAGE_FLIP_ASYNC) {
++		struct drm_device *dev = crtc->dev;
++		struct vc4_dev *vc4 = to_vc4_dev(dev);
++
++		if (vc4->is_vc5)
++			return vc5_async_page_flip(crtc, fb, event, flags);
++		else
++			return vc4_async_page_flip(crtc, fb, event, flags);
++	} else {
+ 		return drm_atomic_helper_page_flip(crtc, fb, event, flags, ctx);
++	}
+ }
+ 
+ struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc)
diff --git a/target/linux/bcm27xx/patches-5.15/950-0909-drm-vc4-Warn-if-some-v3d-code-is-run-on-BCM2711.patch b/target/linux/bcm27xx/patches-5.15/950-0909-drm-vc4-Warn-if-some-v3d-code-is-run-on-BCM2711.patch
new file mode 100644
index 0000000000..0ecbbe6d8c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0909-drm-vc4-Warn-if-some-v3d-code-is-run-on-BCM2711.patch
@@ -0,0 +1,753 @@
+From cec5fc1572ae50252a492ceeabe1b896f8d521b2 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime@cerno.tech>
+Date: Thu, 21 Apr 2022 16:29:43 +0200
+Subject: [PATCH] drm/vc4: Warn if some v3d code is run on BCM2711
+
+The BCM2711 has a separate driver for the v3d, and thus we can't call
+into any of the driver entrypoints that rely on the v3d being there.
+
+Let's add a bunch of checks and complain loudly if that ever happen.
+
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ drivers/gpu/drm/vc4/vc4_bo.c               | 49 ++++++++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_drv.c              | 11 +++++
+ drivers/gpu/drm/vc4/vc4_drv.h              |  6 +++
+ drivers/gpu/drm/vc4/vc4_gem.c              | 40 ++++++++++++++++++
+ drivers/gpu/drm/vc4/vc4_irq.c              | 16 +++++++
+ drivers/gpu/drm/vc4/vc4_kms.c              |  4 ++
+ drivers/gpu/drm/vc4/vc4_perfmon.c          | 47 ++++++++++++++++++++-
+ drivers/gpu/drm/vc4/vc4_render_cl.c        |  4 ++
+ drivers/gpu/drm/vc4/vc4_v3d.c              | 15 +++++++
+ drivers/gpu/drm/vc4/vc4_validate.c         | 16 +++++++
+ drivers/gpu/drm/vc4/vc4_validate_shaders.c |  4 ++
+ 11 files changed, 211 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_bo.c
++++ b/drivers/gpu/drm/vc4/vc4_bo.c
+@@ -248,6 +248,9 @@ void vc4_bo_add_to_purgeable_pool(struct
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	mutex_lock(&vc4->purgeable.lock);
+ 	list_add_tail(&bo->size_head, &vc4->purgeable.list);
+ 	vc4->purgeable.num++;
+@@ -259,6 +262,9 @@ static void vc4_bo_remove_from_purgeable
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	/* list_del_init() is used here because the caller might release
+ 	 * the purgeable lock in order to acquire the madv one and update the
+ 	 * madv status.
+@@ -389,6 +395,9 @@ struct drm_gem_object *vc4_create_object
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_bo *bo;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return ERR_PTR(-ENODEV);
++
+ 	bo = kzalloc(sizeof(*bo), GFP_KERNEL);
+ 	if (!bo)
+ 		return NULL;
+@@ -415,6 +424,9 @@ struct vc4_bo *vc4_bo_create(struct drm_
+ 	struct drm_gem_cma_object *cma_obj;
+ 	struct vc4_bo *bo;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return ERR_PTR(-ENODEV);
++
+ 	if (size == 0)
+ 		return ERR_PTR(-EINVAL);
+ 
+@@ -477,9 +489,13 @@ int vc4_bo_dumb_create(struct drm_file *
+ 		       struct drm_device *dev,
+ 		       struct drm_mode_create_dumb *args)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_bo *bo = NULL;
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	ret = vc4_dumb_fixup_args(args);
+ 	if (ret)
+ 		return ret;
+@@ -600,8 +616,12 @@ static void vc4_bo_cache_time_work(struc
+ 
+ int vc4_bo_inc_usecnt(struct vc4_bo *bo)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	/* Fast path: if the BO is already retained by someone, no need to
+ 	 * check the madv status.
+ 	 */
+@@ -636,6 +656,11 @@ int vc4_bo_inc_usecnt(struct vc4_bo *bo)
+ 
+ void vc4_bo_dec_usecnt(struct vc4_bo *bo)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev);
++
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	/* Fast path: if the BO is still retained by someone, no need to test
+ 	 * the madv value.
+ 	 */
+@@ -761,6 +786,9 @@ int vc4_create_bo_ioctl(struct drm_devic
+ 	struct vc4_bo *bo = NULL;
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	ret = vc4_grab_bin_bo(vc4, vc4file);
+ 	if (ret)
+ 		return ret;
+@@ -784,9 +812,13 @@ int vc4_create_bo_ioctl(struct drm_devic
+ int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data,
+ 		      struct drm_file *file_priv)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_vc4_mmap_bo *args = data;
+ 	struct drm_gem_object *gem_obj;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	gem_obj = drm_gem_object_lookup(file_priv, args->handle);
+ 	if (!gem_obj) {
+ 		DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
+@@ -810,6 +842,9 @@ vc4_create_shader_bo_ioctl(struct drm_de
+ 	struct vc4_bo *bo = NULL;
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (args->size == 0)
+ 		return -EINVAL;
+ 
+@@ -880,11 +915,15 @@ fail:
+ int vc4_set_tiling_ioctl(struct drm_device *dev, void *data,
+ 			 struct drm_file *file_priv)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_vc4_set_tiling *args = data;
+ 	struct drm_gem_object *gem_obj;
+ 	struct vc4_bo *bo;
+ 	bool t_format;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (args->flags != 0)
+ 		return -EINVAL;
+ 
+@@ -923,10 +962,14 @@ int vc4_set_tiling_ioctl(struct drm_devi
+ int vc4_get_tiling_ioctl(struct drm_device *dev, void *data,
+ 			 struct drm_file *file_priv)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_vc4_get_tiling *args = data;
+ 	struct drm_gem_object *gem_obj;
+ 	struct vc4_bo *bo;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (args->flags != 0 || args->modifier != 0)
+ 		return -EINVAL;
+ 
+@@ -953,6 +996,9 @@ int vc4_bo_cache_init(struct drm_device
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	int i;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	/* Create the initial set of BO labels that the kernel will
+ 	 * use.  This lets us avoid a bunch of string reallocation in
+ 	 * the kernel's draw and BO allocation paths.
+@@ -1012,6 +1058,9 @@ int vc4_label_bo_ioctl(struct drm_device
+ 	struct drm_gem_object *gem_obj;
+ 	int ret = 0, label;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (!args->len)
+ 		return -EINVAL;
+ 
+--- a/drivers/gpu/drm/vc4/vc4_drv.c
++++ b/drivers/gpu/drm/vc4/vc4_drv.c
+@@ -101,6 +101,9 @@ static int vc4_get_param_ioctl(struct dr
+ 	if (args->pad != 0)
+ 		return -EINVAL;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (!vc4->v3d)
+ 		return -ENODEV;
+ 
+@@ -144,11 +147,16 @@ static int vc4_get_param_ioctl(struct dr
+ 
+ static int vc4_open(struct drm_device *dev, struct drm_file *file)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_file *vc4file;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	vc4file = kzalloc(sizeof(*vc4file), GFP_KERNEL);
+ 	if (!vc4file)
+ 		return -ENOMEM;
++	vc4file->dev = vc4;
+ 
+ 	vc4_perfmon_open_file(vc4file);
+ 	file->driver_priv = vc4file;
+@@ -160,6 +168,9 @@ static void vc4_close(struct drm_device
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_file *vc4file = file->driver_priv;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	if (vc4file->bin_bo_used)
+ 		vc4_v3d_bin_bo_put(vc4);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_drv.h
++++ b/drivers/gpu/drm/vc4/vc4_drv.h
+@@ -49,6 +49,8 @@ enum vc4_kernel_bo_type {
+  * done. This way, only events related to a specific job will be counted.
+  */
+ struct vc4_perfmon {
++	struct vc4_dev *dev;
++
+ 	/* Tracks the number of users of the perfmon, when this counter reaches
+ 	 * zero the perfmon is destroyed.
+ 	 */
+@@ -612,6 +614,8 @@ to_vc4_crtc_state(struct drm_crtc_state
+ #define VC4_REG32(reg) { .name = #reg, .offset = reg }
+ 
+ struct vc4_exec_info {
++	struct vc4_dev *dev;
++
+ 	/* Sequence number for this bin/render job. */
+ 	uint64_t seqno;
+ 
+@@ -733,6 +737,8 @@ struct vc4_exec_info {
+  * released when the DRM file is closed should be placed here.
+  */
+ struct vc4_file {
++	struct vc4_dev *dev;
++
+ 	struct {
+ 		struct idr idr;
+ 		struct mutex lock;
+--- a/drivers/gpu/drm/vc4/vc4_gem.c
++++ b/drivers/gpu/drm/vc4/vc4_gem.c
+@@ -76,6 +76,9 @@ vc4_get_hang_state_ioctl(struct drm_devi
+ 	u32 i;
+ 	int ret = 0;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (!vc4->v3d) {
+ 		DRM_DEBUG("VC4_GET_HANG_STATE with no VC4 V3D probed\n");
+ 		return -ENODEV;
+@@ -386,6 +389,9 @@ vc4_wait_for_seqno(struct drm_device *de
+ 	unsigned long timeout_expire;
+ 	DEFINE_WAIT(wait);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (vc4->finished_seqno >= seqno)
+ 		return 0;
+ 
+@@ -468,6 +474,9 @@ vc4_submit_next_bin_job(struct drm_devic
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_exec_info *exec;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ again:
+ 	exec = vc4_first_bin_job(vc4);
+ 	if (!exec)
+@@ -511,6 +520,9 @@ vc4_submit_next_render_job(struct drm_de
+ 	if (!exec)
+ 		return;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	/* A previous RCL may have written to one of our textures, and
+ 	 * our full cache flush at bin time may have occurred before
+ 	 * that RCL completed.  Flush the texture cache now, but not
+@@ -528,6 +540,9 @@ vc4_move_job_to_render(struct drm_device
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	bool was_empty = list_empty(&vc4->render_job_list);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	list_move_tail(&exec->head, &vc4->render_job_list);
+ 	if (was_empty)
+ 		vc4_submit_next_render_job(dev);
+@@ -992,6 +1007,9 @@ vc4_job_handle_completed(struct vc4_dev
+ 	unsigned long irqflags;
+ 	struct vc4_seqno_cb *cb, *cb_temp;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	spin_lock_irqsave(&vc4->job_lock, irqflags);
+ 	while (!list_empty(&vc4->job_done_list)) {
+ 		struct vc4_exec_info *exec =
+@@ -1028,6 +1046,9 @@ int vc4_queue_seqno_cb(struct drm_device
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	unsigned long irqflags;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	cb->func = func;
+ 	INIT_WORK(&cb->work, vc4_seqno_cb_work);
+ 
+@@ -1078,8 +1099,12 @@ int
+ vc4_wait_seqno_ioctl(struct drm_device *dev, void *data,
+ 		     struct drm_file *file_priv)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_vc4_wait_seqno *args = data;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	return vc4_wait_for_seqno_ioctl_helper(dev, args->seqno,
+ 					       &args->timeout_ns);
+ }
+@@ -1088,11 +1113,15 @@ int
+ vc4_wait_bo_ioctl(struct drm_device *dev, void *data,
+ 		  struct drm_file *file_priv)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	int ret;
+ 	struct drm_vc4_wait_bo *args = data;
+ 	struct drm_gem_object *gem_obj;
+ 	struct vc4_bo *bo;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (args->pad != 0)
+ 		return -EINVAL;
+ 
+@@ -1135,6 +1164,9 @@ vc4_submit_cl_ioctl(struct drm_device *d
+ 	struct dma_fence *in_fence;
+ 	int ret = 0;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (!vc4->v3d) {
+ 		DRM_DEBUG("VC4_SUBMIT_CL with no VC4 V3D probed\n");
+ 		return -ENODEV;
+@@ -1158,6 +1190,7 @@ vc4_submit_cl_ioctl(struct drm_device *d
+ 		DRM_ERROR("malloc failure on exec struct\n");
+ 		return -ENOMEM;
+ 	}
++	exec->dev = vc4;
+ 
+ 	ret = vc4_v3d_pm_get(vc4);
+ 	if (ret) {
+@@ -1267,6 +1300,9 @@ int vc4_gem_init(struct drm_device *dev)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	vc4->dma_fence_context = dma_fence_context_alloc(1);
+ 
+ 	INIT_LIST_HEAD(&vc4->bin_job_list);
+@@ -1312,11 +1348,15 @@ static void vc4_gem_destroy(struct drm_d
+ int vc4_gem_madvise_ioctl(struct drm_device *dev, void *data,
+ 			  struct drm_file *file_priv)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_vc4_gem_madvise *args = data;
+ 	struct drm_gem_object *gem_obj;
+ 	struct vc4_bo *bo;
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	switch (args->madv) {
+ 	case VC4_MADV_DONTNEED:
+ 	case VC4_MADV_WILLNEED:
+--- a/drivers/gpu/drm/vc4/vc4_irq.c
++++ b/drivers/gpu/drm/vc4/vc4_irq.c
+@@ -260,6 +260,9 @@ vc4_irq_enable(struct drm_device *dev)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	if (!vc4->v3d)
+ 		return;
+ 
+@@ -274,6 +277,9 @@ vc4_irq_disable(struct drm_device *dev)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	if (!vc4->v3d)
+ 		return;
+ 
+@@ -291,8 +297,12 @@ vc4_irq_disable(struct drm_device *dev)
+ 
+ int vc4_irq_install(struct drm_device *dev, int irq)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (irq == IRQ_NOTCONNECTED)
+ 		return -ENOTCONN;
+ 
+@@ -311,6 +321,9 @@ void vc4_irq_uninstall(struct drm_device
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	vc4_irq_disable(dev);
+ 	free_irq(vc4->irq, dev);
+ }
+@@ -321,6 +334,9 @@ void vc4_irq_reset(struct drm_device *de
+ 	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	unsigned long irqflags;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	/* Acknowledge any stale IRQs. */
+ 	V3D_WRITE(V3D_INTCTL, V3D_DRIVER_IRQS);
+ 
+--- a/drivers/gpu/drm/vc4/vc4_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_kms.c
+@@ -485,8 +485,12 @@ static struct drm_framebuffer *vc4_fb_cr
+ 					     struct drm_file *file_priv,
+ 					     const struct drm_mode_fb_cmd2 *mode_cmd)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct drm_mode_fb_cmd2 mode_cmd_local;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return ERR_PTR(-ENODEV);
++
+ 	/* If the user didn't specify a modifier, use the
+ 	 * vc4_set_tiling_ioctl() state for the BO.
+ 	 */
+--- a/drivers/gpu/drm/vc4/vc4_perfmon.c
++++ b/drivers/gpu/drm/vc4/vc4_perfmon.c
+@@ -17,13 +17,27 @@
+ 
+ void vc4_perfmon_get(struct vc4_perfmon *perfmon)
+ {
++	struct vc4_dev *vc4 = perfmon->dev;
++
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	if (perfmon)
+ 		refcount_inc(&perfmon->refcnt);
+ }
+ 
+ void vc4_perfmon_put(struct vc4_perfmon *perfmon)
+ {
+-	if (perfmon && refcount_dec_and_test(&perfmon->refcnt))
++	struct vc4_dev *vc4;
++
++	if (!perfmon)
++		return;
++
++	vc4 = perfmon->dev;
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
++	if (refcount_dec_and_test(&perfmon->refcnt))
+ 		kfree(perfmon);
+ }
+ 
+@@ -32,6 +46,9 @@ void vc4_perfmon_start(struct vc4_dev *v
+ 	unsigned int i;
+ 	u32 mask;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	if (WARN_ON_ONCE(!perfmon || vc4->active_perfmon))
+ 		return;
+ 
+@@ -49,6 +66,9 @@ void vc4_perfmon_stop(struct vc4_dev *vc
+ {
+ 	unsigned int i;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	if (WARN_ON_ONCE(!vc4->active_perfmon ||
+ 			 perfmon != vc4->active_perfmon))
+ 		return;
+@@ -64,8 +84,12 @@ void vc4_perfmon_stop(struct vc4_dev *vc
+ 
+ struct vc4_perfmon *vc4_perfmon_find(struct vc4_file *vc4file, int id)
+ {
++	struct vc4_dev *vc4 = vc4file->dev;
+ 	struct vc4_perfmon *perfmon;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return NULL;
++
+ 	mutex_lock(&vc4file->perfmon.lock);
+ 	perfmon = idr_find(&vc4file->perfmon.idr, id);
+ 	vc4_perfmon_get(perfmon);
+@@ -76,8 +100,14 @@ struct vc4_perfmon *vc4_perfmon_find(str
+ 
+ void vc4_perfmon_open_file(struct vc4_file *vc4file)
+ {
++	struct vc4_dev *vc4 = vc4file->dev;
++
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	mutex_init(&vc4file->perfmon.lock);
+ 	idr_init_base(&vc4file->perfmon.idr, VC4_PERFMONID_MIN);
++	vc4file->dev = vc4;
+ }
+ 
+ static int vc4_perfmon_idr_del(int id, void *elem, void *data)
+@@ -91,6 +121,11 @@ static int vc4_perfmon_idr_del(int id, v
+ 
+ void vc4_perfmon_close_file(struct vc4_file *vc4file)
+ {
++	struct vc4_dev *vc4 = vc4file->dev;
++
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	mutex_lock(&vc4file->perfmon.lock);
+ 	idr_for_each(&vc4file->perfmon.idr, vc4_perfmon_idr_del, NULL);
+ 	idr_destroy(&vc4file->perfmon.idr);
+@@ -107,6 +142,9 @@ int vc4_perfmon_create_ioctl(struct drm_
+ 	unsigned int i;
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (!vc4->v3d) {
+ 		DRM_DEBUG("Creating perfmon no VC4 V3D probed\n");
+ 		return -ENODEV;
+@@ -127,6 +165,7 @@ int vc4_perfmon_create_ioctl(struct drm_
+ 			  GFP_KERNEL);
+ 	if (!perfmon)
+ 		return -ENOMEM;
++	perfmon->dev = vc4;
+ 
+ 	for (i = 0; i < req->ncounters; i++)
+ 		perfmon->events[i] = req->events[i];
+@@ -157,6 +196,9 @@ int vc4_perfmon_destroy_ioctl(struct drm
+ 	struct drm_vc4_perfmon_destroy *req = data;
+ 	struct vc4_perfmon *perfmon;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (!vc4->v3d) {
+ 		DRM_DEBUG("Destroying perfmon no VC4 V3D probed\n");
+ 		return -ENODEV;
+@@ -182,6 +224,9 @@ int vc4_perfmon_get_values_ioctl(struct
+ 	struct vc4_perfmon *perfmon;
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (!vc4->v3d) {
+ 		DRM_DEBUG("Getting perfmon no VC4 V3D probed\n");
+ 		return -ENODEV;
+--- a/drivers/gpu/drm/vc4/vc4_render_cl.c
++++ b/drivers/gpu/drm/vc4/vc4_render_cl.c
+@@ -593,11 +593,15 @@ vc4_rcl_render_config_surface_setup(stru
+ 
+ int vc4_get_rcl(struct drm_device *dev, struct vc4_exec_info *exec)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	struct vc4_rcl_setup setup = {0};
+ 	struct drm_vc4_submit_cl *args = exec->args;
+ 	bool has_bin = args->bin_cl_size != 0;
+ 	int ret;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	if (args->min_x_tile > args->max_x_tile ||
+ 	    args->min_y_tile > args->max_y_tile) {
+ 		DRM_DEBUG("Bad render tile set (%d,%d)-(%d,%d)\n",
+--- a/drivers/gpu/drm/vc4/vc4_v3d.c
++++ b/drivers/gpu/drm/vc4/vc4_v3d.c
+@@ -127,6 +127,9 @@ static int vc4_v3d_debugfs_ident(struct
+ int
+ vc4_v3d_pm_get(struct vc4_dev *vc4)
+ {
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	mutex_lock(&vc4->power_lock);
+ 	if (vc4->power_refcount++ == 0) {
+ 		int ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
+@@ -145,6 +148,9 @@ vc4_v3d_pm_get(struct vc4_dev *vc4)
+ void
+ vc4_v3d_pm_put(struct vc4_dev *vc4)
+ {
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	mutex_lock(&vc4->power_lock);
+ 	if (--vc4->power_refcount == 0) {
+ 		pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev);
+@@ -172,6 +178,9 @@ int vc4_v3d_get_bin_slot(struct vc4_dev
+ 	uint64_t seqno = 0;
+ 	struct vc4_exec_info *exec;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ try_again:
+ 	spin_lock_irqsave(&vc4->job_lock, irqflags);
+ 	slot = ffs(~vc4->bin_alloc_used);
+@@ -316,6 +325,9 @@ int vc4_v3d_bin_bo_get(struct vc4_dev *v
+ {
+ 	int ret = 0;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	mutex_lock(&vc4->bin_bo_lock);
+ 
+ 	if (used && *used)
+@@ -348,6 +360,9 @@ static void bin_bo_release(struct kref *
+ 
+ void vc4_v3d_bin_bo_put(struct vc4_dev *vc4)
+ {
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return;
++
+ 	mutex_lock(&vc4->bin_bo_lock);
+ 	kref_put(&vc4->bin_bo_kref, bin_bo_release);
+ 	mutex_unlock(&vc4->bin_bo_lock);
+--- a/drivers/gpu/drm/vc4/vc4_validate.c
++++ b/drivers/gpu/drm/vc4/vc4_validate.c
+@@ -105,9 +105,13 @@ size_is_lt(uint32_t width, uint32_t heig
+ struct drm_gem_cma_object *
+ vc4_use_bo(struct vc4_exec_info *exec, uint32_t hindex)
+ {
++	struct vc4_dev *vc4 = exec->dev;
+ 	struct drm_gem_cma_object *obj;
+ 	struct vc4_bo *bo;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return NULL;
++
+ 	if (hindex >= exec->bo_count) {
+ 		DRM_DEBUG("BO index %d greater than BO count %d\n",
+ 			  hindex, exec->bo_count);
+@@ -160,10 +164,14 @@ vc4_check_tex_size(struct vc4_exec_info
+ 		   uint32_t offset, uint8_t tiling_format,
+ 		   uint32_t width, uint32_t height, uint8_t cpp)
+ {
++	struct vc4_dev *vc4 = exec->dev;
+ 	uint32_t aligned_width, aligned_height, stride, size;
+ 	uint32_t utile_w = utile_width(cpp);
+ 	uint32_t utile_h = utile_height(cpp);
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	/* The shaded vertex format stores signed 12.4 fixed point
+ 	 * (-2048,2047) offsets from the viewport center, so we should
+ 	 * never have a render target larger than 4096.  The texture
+@@ -482,10 +490,14 @@ vc4_validate_bin_cl(struct drm_device *d
+ 		    void *unvalidated,
+ 		    struct vc4_exec_info *exec)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	uint32_t len = exec->args->bin_cl_size;
+ 	uint32_t dst_offset = 0;
+ 	uint32_t src_offset = 0;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	while (src_offset < len) {
+ 		void *dst_pkt = validated + dst_offset;
+ 		void *src_pkt = unvalidated + src_offset;
+@@ -926,9 +938,13 @@ int
+ vc4_validate_shader_recs(struct drm_device *dev,
+ 			 struct vc4_exec_info *exec)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(dev);
+ 	uint32_t i;
+ 	int ret = 0;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return -ENODEV;
++
+ 	for (i = 0; i < exec->shader_state_count; i++) {
+ 		ret = validate_gl_shader_rec(dev, exec, &exec->shader_state[i]);
+ 		if (ret)
+--- a/drivers/gpu/drm/vc4/vc4_validate_shaders.c
++++ b/drivers/gpu/drm/vc4/vc4_validate_shaders.c
+@@ -778,6 +778,7 @@ vc4_handle_branch_target(struct vc4_shad
+ struct vc4_validated_shader_info *
+ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
+ {
++	struct vc4_dev *vc4 = to_vc4_dev(shader_obj->base.dev);
+ 	bool found_shader_end = false;
+ 	int shader_end_ip = 0;
+ 	uint32_t last_thread_switch_ip = -3;
+@@ -785,6 +786,9 @@ vc4_validate_shader(struct drm_gem_cma_o
+ 	struct vc4_validated_shader_info *validated_shader = NULL;
+ 	struct vc4_shader_validation_state validation_state;
+ 
++	if (WARN_ON_ONCE(vc4->is_vc5))
++		return NULL;
++
+ 	memset(&validation_state, 0, sizeof(validation_state));
+ 	validation_state.shader = shader_obj->vaddr;
+ 	validation_state.max_ip = shader_obj->base.size / sizeof(uint64_t);
diff --git a/target/linux/bcm27xx/patches-5.15/950-0910-dtoverlays-Fix-incorrect-property-name-for-display-r.patch b/target/linux/bcm27xx/patches-5.15/950-0910-dtoverlays-Fix-incorrect-property-name-for-display-r.patch
new file mode 100644
index 0000000000..b524c98690
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0910-dtoverlays-Fix-incorrect-property-name-for-display-r.patch
@@ -0,0 +1,30 @@
+From 2c234a34163d9dc20046b7dc5bf8e9fd7460a3a9 Mon Sep 17 00:00:00 2001
+From: Suriyan Laohaprapanon <suriyant@cloudtronics.com.au>
+Date: Wed, 11 May 2022 18:00:22 +0100
+Subject: [PATCH] dtoverlays: Fix incorrect property name for display
+ rotation
+
+---
+ arch/arm/boot/dts/overlays/adafruit-st7735r-overlay.dts | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/adafruit-st7735r-overlay.dts
++++ b/arch/arm/boot/dts/overlays/adafruit-st7735r-overlay.dts
+@@ -62,7 +62,7 @@
+ 				spi-max-frequency = <32000000>;
+ 				dc-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>;
+ 				reset-gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
+-				rotate = <90>;
++				rotation = <90>;
+ 				pinctrl-names = "default";
+ 				pinctrl-0 = <&adafruit_pins>;
+ 				backlight = <&af18_backlight>;
+@@ -73,7 +73,7 @@
+ 	__overrides__ {
+ 		128x128 = <&af18>, "compatible=okaya,rh128128t";
+ 		speed = <&af18>,"spi-max-frequency:0";
+-		rotate = <&af18>,"rotate:0";
++		rotate = <&af18>,"rotation:0";
+ 		dc_pin = <&af18>,"dc-gpios:4", <&adafruit_pins>,"brcm,pins:4";
+ 		reset_pin = <&af18>,"reset-gpios:4",
+ 			    <&adafruit_pins>,"brcm,pins:0";
diff --git a/target/linux/bcm27xx/patches-5.15/950-0911-drm-vc4_hdmi-Force-a-modeset-when-Broadcast-RGB-sett.patch b/target/linux/bcm27xx/patches-5.15/950-0911-drm-vc4_hdmi-Force-a-modeset-when-Broadcast-RGB-sett.patch
new file mode 100644
index 0000000000..97d3086af5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0911-drm-vc4_hdmi-Force-a-modeset-when-Broadcast-RGB-sett.patch
@@ -0,0 +1,33 @@
+From 93d9ca68c731839126930c6e5a8254c8e1885641 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 5 May 2022 18:50:04 +0100
+Subject: [PATCH] drm/vc4_hdmi: Force a modeset when Broadcast RGB
+ setting changes
+
+Without this the change is not visible until the next modeset
+
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/gpu/drm/vc4/vc4_hdmi.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
+@@ -333,14 +333,17 @@ static int vc4_hdmi_connector_atomic_che
+ {
+ 	struct drm_connector_state *old_state =
+ 		drm_atomic_get_old_connector_state(state, connector);
++	struct vc4_hdmi_connector_state *old_vc4_state = conn_state_to_vc4_hdmi_conn_state(old_state);
+ 	struct drm_connector_state *new_state =
+ 		drm_atomic_get_new_connector_state(state, connector);
++	struct vc4_hdmi_connector_state *new_vc4_state = conn_state_to_vc4_hdmi_conn_state(new_state);
+ 	struct drm_crtc *crtc = new_state->crtc;
+ 
+ 	if (!crtc)
+ 		return 0;
+ 
+ 	if (old_state->colorspace != new_state->colorspace ||
++	    old_vc4_state->broadcast_rgb != new_vc4_state->broadcast_rgb ||
+ 	    !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) {
+ 		struct drm_crtc_state *crtc_state;
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0912-drm-atomic-If-margins-are-updated-update-all-planes.patch b/target/linux/bcm27xx/patches-5.15/950-0912-drm-atomic-If-margins-are-updated-update-all-planes.patch
new file mode 100644
index 0000000000..2a8748c599
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0912-drm-atomic-If-margins-are-updated-update-all-planes.patch
@@ -0,0 +1,60 @@
+From 75b6b04cdb54b2e91c0fd344ffc967ce64ddccd7 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Fri, 1 Apr 2022 17:10:37 +0100
+Subject: [PATCH] drm/atomic: If margins are updated, update all
+ planes.
+
+Margins may be implemented by scaling the planes, but as there
+is no way of intercepting the set_property for a standard property,
+and all planes are checked in drm_atomic_check_only before the
+connectors, there's now way to add the planes into the state
+from the driver.
+
+If the margin properties change, add all corresponding planes to
+the state.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/drm_atomic_uapi.c | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/drivers/gpu/drm/drm_atomic_uapi.c
++++ b/drivers/gpu/drm/drm_atomic_uapi.c
+@@ -715,6 +715,7 @@ static int drm_atomic_connector_set_prop
+ {
+ 	struct drm_device *dev = connector->dev;
+ 	struct drm_mode_config *config = &dev->mode_config;
++	bool margins_updated = false;
+ 	bool replaced = false;
+ 	int ret;
+ 
+@@ -734,12 +735,16 @@ static int drm_atomic_connector_set_prop
+ 		state->tv.subconnector = val;
+ 	} else if (property == config->tv_left_margin_property) {
+ 		state->tv.margins.left = val;
++		margins_updated = true;
+ 	} else if (property == config->tv_right_margin_property) {
+ 		state->tv.margins.right = val;
++		margins_updated = true;
+ 	} else if (property == config->tv_top_margin_property) {
+ 		state->tv.margins.top = val;
++		margins_updated = true;
+ 	} else if (property == config->tv_bottom_margin_property) {
+ 		state->tv.margins.bottom = val;
++		margins_updated = true;
+ 	} else if (property == config->tv_mode_property) {
+ 		state->tv.mode = val;
+ 	} else if (property == config->tv_brightness_property) {
+@@ -818,6 +823,12 @@ static int drm_atomic_connector_set_prop
+ 		return -EINVAL;
+ 	}
+ 
++	if (margins_updated && state->crtc) {
++		ret = drm_atomic_add_affected_planes(state->state, state->crtc);
++
++		return ret;
++	}
++
+ 	return 0;
+ }
+ 
diff --git a/target/linux/bcm27xx/patches-5.15/950-0913-overlays-Add-gpio-hog-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0913-overlays-Add-gpio-hog-overlay.patch
new file mode 100644
index 0000000000..47a99dbe15
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0913-overlays-Add-gpio-hog-overlay.patch
@@ -0,0 +1,81 @@
+From a2948fd59692f1d30ce64035bed33b32997a0ad7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Mon, 16 May 2022 12:16:46 +0100
+Subject: [PATCH] overlays: Add gpio-hog overlay
+
+Add an overlay to activate a hog on a specified pin. Note that
+hogged GPIOs are not available for other uses, i.e. drivers or
+gpioset/gpioget.
+
+Inspired by a Forum thread here:
+
+    https://forums.raspberrypi.com/viewtopic.php?t=334286
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 11 ++++++++
+ .../boot/dts/overlays/gpio-hog-overlay.dts    | 27 +++++++++++++++++++
+ 3 files changed, 39 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/gpio-hog-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -59,6 +59,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	goodix.dtbo \
+ 	googlevoicehat-soundcard.dtbo \
+ 	gpio-fan.dtbo \
++	gpio-hog.dtbo \
+ 	gpio-ir.dtbo \
+ 	gpio-ir-tx.dtbo \
+ 	gpio-key.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1061,6 +1061,17 @@ Params: gpiopin                 GPIO use
+                                 millicelcius (default 55000)
+ 
+ 
++Name:   gpio-hog
++Info:   Activate a "hog" for a GPIO - request that the kernel configures it as
++        an output, driven low or high as indicated by the presence or absence
++        of the active_low parameter. Note that a hogged GPIO is not available
++        to other drivers or for gpioset/gpioget.
++Load:   dtoverlay=gpio-hog,<param>=<val>
++Params: gpio                    GPIO pin to hog (default 26)
++        active_low              If set, the hog drives the GPIO low (defaults
++                                to off - the GPIO is driven high)
++
++
+ Name:   gpio-ir
+ Info:   Use GPIO pin as rc-core style infrared receiver input. The rc-core-
+         based gpio_ir_recv driver maps received keys directly to a
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/gpio-hog-overlay.dts
+@@ -0,0 +1,27 @@
++// Configure a "hog" on the specified GPIO
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			hog: hog@1a {
++			     gpio-hog;
++			     gpios = <26 GPIO_ACTIVE_HIGH>;
++			     output-high;
++			};
++		};
++	};
++
++	__overrides__ {
++		gpio =       <&hog>,"reg:0",
++		             <&hog>,"gpios:0";
++		active_low = <&hog>,"output-high!",
++			     <&hog>,"output-low?";
++	};
++};
diff --git a/target/linux/bcm27xx/patches-5.15/950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch b/target/linux/bcm27xx/patches-5.15/950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch
new file mode 100644
index 0000000000..da9c428efb
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch
@@ -0,0 +1,38 @@
+From b70da899940777d92338d8f83f7a6236818ad08a Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.com>
+Date: Mon, 16 May 2022 10:28:27 +0100
+Subject: [PATCH] mmc: block: Don't do single-sector reads during
+ recovery
+
+See https://github.com/raspberrypi/linux/issues/5019
+
+If an SD card has degraded performance such that IO operations time out
+then the MMC block layer will leak SG DMA mappings in the swiotlb during
+recovery. It retries the same SG and this causes the leak, as it is
+mapped twice - once in sdhci_pre_req() and again during single-block
+reads in sdhci_prepare_data().
+
+Resetting the card (including power-cycling if a regulator for vmmc is
+present) ought to be enough to recover a stuck state, so for now don't
+try single-block reads in the recovery path.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
+---
+ drivers/mmc/core/block.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/drivers/mmc/core/block.c
++++ b/drivers/mmc/core/block.c
+@@ -1871,7 +1871,11 @@ static void mmc_blk_mq_rw_recovery(struc
+ 	}
+ 
+ 	/* FIXME: Missing single sector read for large sector size */
+-	if (!mmc_large_sector(card) && rq_data_dir(req) == READ &&
++	/*
++	 * XXX: don't do single-sector reads, as it leaks a SG DMA
++	 * mapping when reusing the still-pending req.
++	 */
++	if (0 && !mmc_large_sector(card) && rq_data_dir(req) == READ &&
+ 	    brq->data.blocks > 1) {
+ 		/* Read one sector at a time */
+ 		mmc_blk_read_single(mq, req);
diff --git a/target/linux/bcm27xx/patches-5.15/960-hwrng-iproc-set-quality-to-1000.patch b/target/linux/bcm27xx/patches-5.15/960-hwrng-iproc-set-quality-to-1000.patch
new file mode 100644
index 0000000000..75bd98f4a1
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/960-hwrng-iproc-set-quality-to-1000.patch
@@ -0,0 +1,25 @@
+From d3e5e7f3a4e6f61e8c380b9a610212267ee72dbd Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
+Date: Sat, 20 Feb 2021 19:24:50 +0100
+Subject: [PATCH] hwrng: iproc: set quality to 1000
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This allows khwrngd to make use of iproc-rng200.
+
+Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+---
+ drivers/char/hw_random/iproc-rng200.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/char/hw_random/iproc-rng200.c
++++ b/drivers/char/hw_random/iproc-rng200.c
+@@ -257,6 +257,7 @@ static int iproc_rng200_probe(struct pla
+ 
+ 	priv->rng.name = pdev->name;
+ 	priv->rng.cleanup = iproc_rng200_cleanup;
++	priv->rng.quality = 1000;
+ 
+ 	if (of_device_is_compatible(dev->of_node, "brcm,bcm2711-rng200")) {
+ 		priv->rng.init = bcm2711_rng200_init;
diff --git a/target/linux/generic/config-5.15 b/target/linux/generic/config-5.15
index 488e9c16e8..93c22e3896 100644
--- a/target/linux/generic/config-5.15
+++ b/target/linux/generic/config-5.15
@@ -1562,6 +1562,7 @@ CONFIG_DQL=y
 # CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D is not set
 # CONFIG_DRM_PANEL_ILITEK_IL9322 is not set
 # CONFIG_DRM_PANEL_ILITEK_ILI9341 is not set
+# CONFIG_DRM_PANEL_ILITEK_ILI9806E is not set
 # CONFIG_DRM_PANEL_ILITEK_ILI9881C is not set
 # CONFIG_DRM_PANEL_INNOLUX_EJ030NA is not set
 # CONFIG_DRM_PANEL_INNOLUX_P079ZCA is not set
@@ -1574,6 +1575,7 @@ CONFIG_DQL=y
 # CONFIG_DRM_PANEL_LG_LG4573 is not set
 # CONFIG_DRM_PANEL_LVDS is not set
 # CONFIG_DRM_PANEL_MANTIX_MLAF057WE51 is not set
+# CONFIG_DRM_PANEL_MIPI_DBI is not set
 # CONFIG_DRM_PANEL_NEC_NL8048HL11 is not set
 # CONFIG_DRM_PANEL_NOVATEK_NT35510 is not set
 # CONFIG_DRM_PANEL_NOVATEK_NT36672A is not set
@@ -1611,6 +1613,7 @@ CONFIG_DQL=y
 # CONFIG_DRM_PANEL_TPO_TD028TTEC1 is not set
 # CONFIG_DRM_PANEL_TPO_TD043MTEA1 is not set
 # CONFIG_DRM_PANEL_TPO_TPG110 is not set
+# CONFIG_DRM_PANEL_TPO_Y17P is not set
 # CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA is not set
 # CONFIG_DRM_PANEL_VISIONOX_RM69299 is not set
 # CONFIG_DRM_PANEL_WIDECHIPS_WS2401 is not set
@@ -2206,6 +2209,7 @@ CONFIG_GPIOLIB_FASTPATH_LIMIT=512
 # CONFIG_GPIO_PCI_IDIO_16 is not set
 # CONFIG_GPIO_PISOSR is not set
 # CONFIG_GPIO_PL061 is not set
+# CONFIG_GPIO_PWM is not set
 # CONFIG_GPIO_RCAR is not set
 # CONFIG_GPIO_RDC321X is not set
 # CONFIG_GPIO_SAMA5D2_PIOBU is not set
@@ -4822,6 +4826,7 @@ CONFIG_PSTORE_DEFAULT_KMSG_BYTES=10240
 # CONFIG_PWM_FSL_FTM is not set
 # CONFIG_PWM_JZ4740 is not set
 # CONFIG_PWM_PCA9685 is not set
+# CONFIG_PWM_RASPBERRYPI_POE is not set
 CONFIG_PWRSEQ_EMMC=y
 # CONFIG_PWRSEQ_SD8787 is not set
 CONFIG_PWRSEQ_SIMPLE=y
@@ -5394,6 +5399,7 @@ CONFIG_SELECT_MEMORY_MODEL=y
 # CONFIG_SENSORS_DS620 is not set
 # CONFIG_SENSORS_EMC1403 is not set
 # CONFIG_SENSORS_EMC2103 is not set
+# CONFIG_SENSORS_EMC2305 is not set
 # CONFIG_SENSORS_EMC6W201 is not set
 # CONFIG_SENSORS_F71805F is not set
 # CONFIG_SENSORS_F71882FG is not set
@@ -5867,6 +5873,8 @@ CONFIG_SND_PROC_FS=y
 # CONFIG_SND_SIS7019 is not set
 # CONFIG_SND_SOC is not set
 # CONFIG_SND_SOC_AC97_CODEC is not set
+# CONFIG_SND_SOC_AD193X_I2C is not set
+# CONFIG_SND_SOC_AD193X_SPI is not set
 # CONFIG_SND_SOC_ADAU1372_I2C is not set
 # CONFIG_SND_SOC_ADAU1372_SPI is not set
 # CONFIG_SND_SOC_ADAU1701 is not set
@@ -7135,6 +7143,7 @@ CONFIG_VHOST_MENU=y
 # CONFIG_VHOST_VSOCK is not set
 # CONFIG_VIA_RHINE is not set
 # CONFIG_VIA_VELOCITY is not set
+# CONFIG_VIDEO_AD5398 is not set
 # CONFIG_VIDEO_AD5820 is not set
 # CONFIG_VIDEO_AD9389B is not set
 # CONFIG_VIDEO_ADP1653 is not set
@@ -7223,6 +7232,7 @@ CONFIG_VHOST_MENU=y
 # CONFIG_VIDEO_OMAP2_VOUT is not set
 # CONFIG_VIDEO_OV02A10 is not set
 # CONFIG_VIDEO_OV13858 is not set
+# CONFIG_VIDEO_OV2311 is not set
 # CONFIG_VIDEO_OV2640 is not set
 # CONFIG_VIDEO_OV2659 is not set
 # CONFIG_VIDEO_OV2680 is not set
-- 
2.30.2