From 6da3c9ddbca69d854e367f381092f32bb353ced9 Mon Sep 17 00:00:00 2001 From: Daniel Golle Date: Fri, 15 Mar 2024 18:04:53 +0000 Subject: [PATCH] generic: 6.6: backport support for SDX75-based MHI 5G modems Also backport most recent MHI modem additions to Linux 6.6. Adds support for generic SDX75-based modems. Signed-off-by: Daniel Golle --- ...-a-separate-timeout-parameter-for-wa.patch | 175 ++++++++++++++++++ ..._generic-Add-SDX75-based-modem-suppo.patch | 62 +++++++ ..._generic-constify-modem_telit_fn980_.patch | 28 +++ ...-bus-mhi-core-add-SBL-state-callback.patch | 2 +- 4 files changed, 266 insertions(+), 1 deletion(-) create mode 100644 target/linux/generic/backport-6.6/850-v6.8-bus-mhi-host-Add-a-separate-timeout-parameter-for-wa.patch create mode 100644 target/linux/generic/backport-6.6/851-v6.8-bus-mhi-host-pci_generic-Add-SDX75-based-modem-suppo.patch create mode 100644 target/linux/generic/backport-6.6/852-stable-bus-mhi-host-pci_generic-constify-modem_telit_fn980_.patch diff --git a/target/linux/generic/backport-6.6/850-v6.8-bus-mhi-host-Add-a-separate-timeout-parameter-for-wa.patch b/target/linux/generic/backport-6.6/850-v6.8-bus-mhi-host-Add-a-separate-timeout-parameter-for-wa.patch new file mode 100644 index 0000000000..23f20ed65e --- /dev/null +++ b/target/linux/generic/backport-6.6/850-v6.8-bus-mhi-host-Add-a-separate-timeout-parameter-for-wa.patch @@ -0,0 +1,175 @@ +From 6ab3d50b106c9aea123a80551a6c9deace83b914 Mon Sep 17 00:00:00 2001 +From: Qiang Yu +Date: Tue, 7 Nov 2023 16:14:49 +0800 +Subject: [PATCH] bus: mhi: host: Add a separate timeout parameter for waiting + ready + +Some devices(eg. SDX75) take longer than expected (default, 8 seconds) to +set ready after reboot. Hence add optional ready timeout parameter and pass +the appropriate timeout value to mhi_poll_reg_field() to wait enough for +device ready as part of power up sequence. + +Signed-off-by: Qiang Yu +Reviewed-by: Manivannan Sadhasivam +Link: https://lore.kernel.org/r/1699344890-87076-2-git-send-email-quic_qianyu@quicinc.com +Signed-off-by: Manivannan Sadhasivam +--- + drivers/bus/mhi/host/init.c | 1 + + drivers/bus/mhi/host/internal.h | 2 +- + drivers/bus/mhi/host/main.c | 5 +++-- + drivers/bus/mhi/host/pm.c | 24 +++++++++++++++++------- + include/linux/mhi.h | 4 ++++ + 5 files changed, 26 insertions(+), 10 deletions(-) + +--- a/drivers/bus/mhi/host/init.c ++++ b/drivers/bus/mhi/host/init.c +@@ -881,6 +881,7 @@ static int parse_config(struct mhi_contr + if (!mhi_cntrl->timeout_ms) + mhi_cntrl->timeout_ms = MHI_TIMEOUT_MS; + ++ mhi_cntrl->ready_timeout_ms = config->ready_timeout_ms; + mhi_cntrl->bounce_buf = config->use_bounce_buf; + mhi_cntrl->buffer_len = config->buf_len; + if (!mhi_cntrl->buffer_len) +--- a/drivers/bus/mhi/host/internal.h ++++ b/drivers/bus/mhi/host/internal.h +@@ -321,7 +321,7 @@ int __must_check mhi_read_reg_field(stru + u32 *out); + int __must_check mhi_poll_reg_field(struct mhi_controller *mhi_cntrl, + void __iomem *base, u32 offset, u32 mask, +- u32 val, u32 delayus); ++ u32 val, u32 delayus, u32 timeout_ms); + void mhi_write_reg(struct mhi_controller *mhi_cntrl, void __iomem *base, + u32 offset, u32 val); + int __must_check mhi_write_reg_field(struct mhi_controller *mhi_cntrl, +--- a/drivers/bus/mhi/host/main.c ++++ b/drivers/bus/mhi/host/main.c +@@ -40,10 +40,11 @@ int __must_check mhi_read_reg_field(stru + + int __must_check mhi_poll_reg_field(struct mhi_controller *mhi_cntrl, + void __iomem *base, u32 offset, +- u32 mask, u32 val, u32 delayus) ++ u32 mask, u32 val, u32 delayus, ++ u32 timeout_ms) + { + int ret; +- u32 out, retry = (mhi_cntrl->timeout_ms * 1000) / delayus; ++ u32 out, retry = (timeout_ms * 1000) / delayus; + + while (retry--) { + ret = mhi_read_reg_field(mhi_cntrl, base, offset, mask, &out); +--- a/drivers/bus/mhi/host/pm.c ++++ b/drivers/bus/mhi/host/pm.c +@@ -163,6 +163,7 @@ int mhi_ready_state_transition(struct mh + enum mhi_pm_state cur_state; + struct device *dev = &mhi_cntrl->mhi_dev->dev; + u32 interval_us = 25000; /* poll register field every 25 milliseconds */ ++ u32 timeout_ms; + int ret, i; + + /* Check if device entered error state */ +@@ -173,14 +174,18 @@ int mhi_ready_state_transition(struct mh + + /* Wait for RESET to be cleared and READY bit to be set by the device */ + ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL, +- MHICTRL_RESET_MASK, 0, interval_us); ++ MHICTRL_RESET_MASK, 0, interval_us, ++ mhi_cntrl->timeout_ms); + if (ret) { + dev_err(dev, "Device failed to clear MHI Reset\n"); + return ret; + } + ++ timeout_ms = mhi_cntrl->ready_timeout_ms ? ++ mhi_cntrl->ready_timeout_ms : mhi_cntrl->timeout_ms; + ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHISTATUS, +- MHISTATUS_READY_MASK, 1, interval_us); ++ MHISTATUS_READY_MASK, 1, interval_us, ++ timeout_ms); + if (ret) { + dev_err(dev, "Device failed to enter MHI Ready\n"); + return ret; +@@ -479,7 +484,7 @@ static void mhi_pm_disable_transition(st + + /* Wait for the reset bit to be cleared by the device */ + ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL, +- MHICTRL_RESET_MASK, 0, 25000); ++ MHICTRL_RESET_MASK, 0, 25000, mhi_cntrl->timeout_ms); + if (ret) + dev_err(dev, "Device failed to clear MHI Reset\n"); + +@@ -492,8 +497,8 @@ static void mhi_pm_disable_transition(st + if (!MHI_IN_PBL(mhi_get_exec_env(mhi_cntrl))) { + /* wait for ready to be set */ + ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, +- MHISTATUS, +- MHISTATUS_READY_MASK, 1, 25000); ++ MHISTATUS, MHISTATUS_READY_MASK, ++ 1, 25000, mhi_cntrl->timeout_ms); + if (ret) + dev_err(dev, "Device failed to enter READY state\n"); + } +@@ -1111,7 +1116,8 @@ int mhi_async_power_up(struct mhi_contro + if (state == MHI_STATE_SYS_ERR) { + mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET); + ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL, +- MHICTRL_RESET_MASK, 0, interval_us); ++ MHICTRL_RESET_MASK, 0, interval_us, ++ mhi_cntrl->timeout_ms); + if (ret) { + dev_info(dev, "Failed to reset MHI due to syserr state\n"); + goto error_exit; +@@ -1202,14 +1208,18 @@ EXPORT_SYMBOL_GPL(mhi_power_down); + int mhi_sync_power_up(struct mhi_controller *mhi_cntrl) + { + int ret = mhi_async_power_up(mhi_cntrl); ++ u32 timeout_ms; + + if (ret) + return ret; + ++ /* Some devices need more time to set ready during power up */ ++ timeout_ms = mhi_cntrl->ready_timeout_ms ? ++ mhi_cntrl->ready_timeout_ms : mhi_cntrl->timeout_ms; + wait_event_timeout(mhi_cntrl->state_event, + MHI_IN_MISSION_MODE(mhi_cntrl->ee) || + MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state), +- msecs_to_jiffies(mhi_cntrl->timeout_ms)); ++ msecs_to_jiffies(timeout_ms)); + + ret = (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -ETIMEDOUT; + if (ret) +--- a/include/linux/mhi.h ++++ b/include/linux/mhi.h +@@ -266,6 +266,7 @@ struct mhi_event_config { + * struct mhi_controller_config - Root MHI controller configuration + * @max_channels: Maximum number of channels supported + * @timeout_ms: Timeout value for operations. 0 means use default ++ * @ready_timeout_ms: Timeout value for waiting device to be ready (optional) + * @buf_len: Size of automatically allocated buffers. 0 means use default + * @num_channels: Number of channels defined in @ch_cfg + * @ch_cfg: Array of defined channels +@@ -277,6 +278,7 @@ struct mhi_event_config { + struct mhi_controller_config { + u32 max_channels; + u32 timeout_ms; ++ u32 ready_timeout_ms; + u32 buf_len; + u32 num_channels; + const struct mhi_channel_config *ch_cfg; +@@ -330,6 +332,7 @@ struct mhi_controller_config { + * @pm_mutex: Mutex for suspend/resume operation + * @pm_lock: Lock for protecting MHI power management state + * @timeout_ms: Timeout in ms for state transitions ++ * @ready_timeout_ms: Timeout in ms for waiting device to be ready (optional) + * @pm_state: MHI power management state + * @db_access: DB access states + * @ee: MHI device execution environment +@@ -419,6 +422,7 @@ struct mhi_controller { + struct mutex pm_mutex; + rwlock_t pm_lock; + u32 timeout_ms; ++ u32 ready_timeout_ms; + u32 pm_state; + u32 db_access; + enum mhi_ee_type ee; diff --git a/target/linux/generic/backport-6.6/851-v6.8-bus-mhi-host-pci_generic-Add-SDX75-based-modem-suppo.patch b/target/linux/generic/backport-6.6/851-v6.8-bus-mhi-host-pci_generic-Add-SDX75-based-modem-suppo.patch new file mode 100644 index 0000000000..d0f7df5007 --- /dev/null +++ b/target/linux/generic/backport-6.6/851-v6.8-bus-mhi-host-pci_generic-Add-SDX75-based-modem-suppo.patch @@ -0,0 +1,62 @@ +From 4dc9c850a974ba7db2091ce73bcffe631aafe144 Mon Sep 17 00:00:00 2001 +From: Qiang Yu +Date: Tue, 7 Nov 2023 16:14:50 +0800 +Subject: [PATCH 1/2] bus: mhi: host: pci_generic: Add SDX75 based modem + support + +Add generic info for SDX75 based modems. SDX75 takes longer to set ready +during power up. Hence use separate configuration. + +Signed-off-by: Qiang Yu +Reviewed-by: Manivannan Sadhasivam +Link: https://lore.kernel.org/r/1699344890-87076-3-git-send-email-quic_qianyu@quicinc.com +Signed-off-by: Manivannan Sadhasivam +--- + drivers/bus/mhi/host/pci_generic.c | 22 ++++++++++++++++++++++ + 1 file changed, 22 insertions(+) + +--- a/drivers/bus/mhi/host/pci_generic.c ++++ b/drivers/bus/mhi/host/pci_generic.c +@@ -269,6 +269,16 @@ static struct mhi_event_config modem_qco + MHI_EVENT_CONFIG_HW_DATA(5, 2048, 101) + }; + ++static const struct mhi_controller_config modem_qcom_v2_mhiv_config = { ++ .max_channels = 128, ++ .timeout_ms = 8000, ++ .ready_timeout_ms = 50000, ++ .num_channels = ARRAY_SIZE(modem_qcom_v1_mhi_channels), ++ .ch_cfg = modem_qcom_v1_mhi_channels, ++ .num_events = ARRAY_SIZE(modem_qcom_v1_mhi_events), ++ .event_cfg = modem_qcom_v1_mhi_events, ++}; ++ + static const struct mhi_controller_config modem_qcom_v1_mhiv_config = { + .max_channels = 128, + .timeout_ms = 8000, +@@ -278,6 +288,16 @@ static const struct mhi_controller_confi + .event_cfg = modem_qcom_v1_mhi_events, + }; + ++static const struct mhi_pci_dev_info mhi_qcom_sdx75_info = { ++ .name = "qcom-sdx75m", ++ .fw = "qcom/sdx75m/xbl.elf", ++ .edl = "qcom/sdx75m/edl.mbn", ++ .config = &modem_qcom_v2_mhiv_config, ++ .bar_num = MHI_PCI_DEFAULT_BAR_NUM, ++ .dma_data_width = 32, ++ .sideband_wake = false, ++}; ++ + static const struct mhi_pci_dev_info mhi_qcom_sdx65_info = { + .name = "qcom-sdx65m", + .fw = "qcom/sdx65m/xbl.elf", +@@ -600,6 +620,8 @@ static const struct pci_device_id mhi_pc + .driver_data = (kernel_ulong_t) &mhi_telit_fn990_info }, + { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0308), + .driver_data = (kernel_ulong_t) &mhi_qcom_sdx65_info }, ++ { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0309), ++ .driver_data = (kernel_ulong_t) &mhi_qcom_sdx75_info }, + { PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1001), /* EM120R-GL (sdx24) */ + .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info }, + { PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1002), /* EM160R-GL (sdx24) */ diff --git a/target/linux/generic/backport-6.6/852-stable-bus-mhi-host-pci_generic-constify-modem_telit_fn980_.patch b/target/linux/generic/backport-6.6/852-stable-bus-mhi-host-pci_generic-constify-modem_telit_fn980_.patch new file mode 100644 index 0000000000..e6df7895ce --- /dev/null +++ b/target/linux/generic/backport-6.6/852-stable-bus-mhi-host-pci_generic-constify-modem_telit_fn980_.patch @@ -0,0 +1,28 @@ +From 2f5e59d70566902d7b4e13c6af3f042f5d28b78b Mon Sep 17 00:00:00 2001 +From: Jeff Johnson +Date: Thu, 22 Feb 2024 18:00:23 -0800 +Subject: [PATCH 2/2] bus: mhi: host: pci_generic: constify + modem_telit_fn980_hw_v1_config + +MHI expects the controller configs to be const, and all of the other ones +in this file already are, so constify modem_telit_fn980_hw_v1_config. + +Signed-off-by: Jeff Johnson +Reviewed-by: Manivannan Sadhasivam +Link: https://lore.kernel.org/r/20240222-mhi-const-bus-mhi-host-pci_generic-v1-1-d4c9b0b0a7a5@quicinc.com +Signed-off-by: Manivannan Sadhasivam +--- + drivers/bus/mhi/host/pci_generic.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/bus/mhi/host/pci_generic.c ++++ b/drivers/bus/mhi/host/pci_generic.c +@@ -538,7 +538,7 @@ static struct mhi_event_config mhi_telit + MHI_EVENT_CONFIG_HW_DATA(2, 2048, 101) + }; + +-static struct mhi_controller_config modem_telit_fn980_hw_v1_config = { ++static const struct mhi_controller_config modem_telit_fn980_hw_v1_config = { + .max_channels = 128, + .timeout_ms = 20000, + .num_channels = ARRAY_SIZE(mhi_telit_fn980_hw_v1_channels), diff --git a/target/linux/generic/pending-6.6/790-bus-mhi-core-add-SBL-state-callback.patch b/target/linux/generic/pending-6.6/790-bus-mhi-core-add-SBL-state-callback.patch index f239355594..fe0f260ae3 100644 --- a/target/linux/generic/pending-6.6/790-bus-mhi-core-add-SBL-state-callback.patch +++ b/target/linux/generic/pending-6.6/790-bus-mhi-core-add-SBL-state-callback.patch @@ -20,7 +20,7 @@ Signed-off-by: Robert Marko --- a/drivers/bus/mhi/host/main.c +++ b/drivers/bus/mhi/host/main.c -@@ -905,6 +905,7 @@ int mhi_process_ctrl_ev_ring(struct mhi_ +@@ -906,6 +906,7 @@ int mhi_process_ctrl_ev_ring(struct mhi_ switch (event) { case MHI_EE_SBL: st = DEV_ST_TRANSITION_SBL; -- 2.30.2